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)) | |
607fa7f2 | 52 | #define SV_COW_NEXT_SV_SET(current,next) SvUV_set(current, PTR2UV(next)) |
b5ccf5f2 | 53 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
765f542d | 54 | on-write. */ |
765f542d | 55 | #endif |
645c22ef DM |
56 | |
57 | /* ============================================================================ | |
58 | ||
59 | =head1 Allocation and deallocation of SVs. | |
60 | ||
5e045b90 AMS |
61 | An SV (or AV, HV, etc.) is allocated in two parts: the head (struct sv, |
62 | av, hv...) contains type and reference count information, as well as a | |
63 | pointer to the body (struct xrv, xpv, xpviv...), which contains fields | |
64 | specific to each type. | |
65 | ||
4977e971 NC |
66 | Normally, this allocation is done using arenas, which by default are |
67 | approximately 4K chunks of memory parcelled up into N heads or bodies. The | |
68 | first slot in each arena is reserved, and is used to hold a link to the next | |
69 | arena. In the case of heads, the unused first slot also contains some flags | |
70 | and a note of the number of slots. Snaked through each arena chain is a | |
5e045b90 | 71 | linked list of free items; when this becomes empty, an extra arena is |
4977e971 | 72 | allocated and divided up into N items which are threaded into the free list. |
645c22ef DM |
73 | |
74 | The following global variables are associated with arenas: | |
75 | ||
76 | PL_sv_arenaroot pointer to list of SV arenas | |
77 | PL_sv_root pointer to list of free SV structures | |
78 | ||
79 | PL_foo_arenaroot pointer to list of foo arenas, | |
80 | PL_foo_root pointer to list of free foo bodies | |
81 | ... for foo in xiv, xnv, xrv, xpv etc. | |
82 | ||
83 | Note that some of the larger and more rarely used body types (eg xpvio) | |
84 | are not allocated using arenas, but are instead just malloc()/free()ed as | |
85 | required. Also, if PURIFY is defined, arenas are abandoned altogether, | |
86 | with all items individually malloc()ed. In addition, a few SV heads are | |
87 | not allocated from an arena, but are instead directly created as static | |
4977e971 NC |
88 | or auto variables, eg PL_sv_undef. The size of arenas can be changed from |
89 | the default by setting PERL_ARENA_SIZE appropriately at compile time. | |
645c22ef DM |
90 | |
91 | The SV arena serves the secondary purpose of allowing still-live SVs | |
92 | to be located and destroyed during final cleanup. | |
93 | ||
94 | At the lowest level, the macros new_SV() and del_SV() grab and free | |
95 | an SV head. (If debugging with -DD, del_SV() calls the function S_del_sv() | |
96 | to return the SV to the free list with error checking.) new_SV() calls | |
97 | more_sv() / sv_add_arena() to add an extra arena if the free list is empty. | |
98 | SVs in the free list have their SvTYPE field set to all ones. | |
99 | ||
100 | Similarly, there are macros new_XIV()/del_XIV(), new_XNV()/del_XNV() etc | |
101 | that allocate and return individual body types. Normally these are mapped | |
ff276b08 RG |
102 | to the arena-manipulating functions new_xiv()/del_xiv() etc, but may be |
103 | instead mapped directly to malloc()/free() if PURIFY is defined. The | |
645c22ef DM |
104 | new/del functions remove from, or add to, the appropriate PL_foo_root |
105 | list, and call more_xiv() etc to add a new arena if the list is empty. | |
106 | ||
ff276b08 | 107 | At the time of very final cleanup, sv_free_arenas() is called from |
645c22ef DM |
108 | perl_destruct() to physically free all the arenas allocated since the |
109 | start of the interpreter. Note that this also clears PL_he_arenaroot, | |
110 | which is otherwise dealt with in hv.c. | |
111 | ||
112 | Manipulation of any of the PL_*root pointers is protected by enclosing | |
113 | LOCK_SV_MUTEX; ... UNLOCK_SV_MUTEX calls which should Do the Right Thing | |
114 | if threads are enabled. | |
115 | ||
116 | The function visit() scans the SV arenas list, and calls a specified | |
117 | function for each SV it finds which is still live - ie which has an SvTYPE | |
118 | other than all 1's, and a non-zero SvREFCNT. visit() is used by the | |
119 | following functions (specified as [function that calls visit()] / [function | |
120 | called by visit() for each SV]): | |
121 | ||
122 | sv_report_used() / do_report_used() | |
123 | dump all remaining SVs (debugging aid) | |
124 | ||
125 | sv_clean_objs() / do_clean_objs(),do_clean_named_objs() | |
126 | Attempt to free all objects pointed to by RVs, | |
127 | and, unless DISABLE_DESTRUCTOR_KLUDGE is defined, | |
128 | try to do the same for all objects indirectly | |
129 | referenced by typeglobs too. Called once from | |
130 | perl_destruct(), prior to calling sv_clean_all() | |
131 | below. | |
132 | ||
133 | sv_clean_all() / do_clean_all() | |
134 | SvREFCNT_dec(sv) each remaining SV, possibly | |
135 | triggering an sv_free(). It also sets the | |
136 | SVf_BREAK flag on the SV to indicate that the | |
137 | refcnt has been artificially lowered, and thus | |
138 | stopping sv_free() from giving spurious warnings | |
139 | about SVs which unexpectedly have a refcnt | |
140 | of zero. called repeatedly from perl_destruct() | |
141 | until there are no SVs left. | |
142 | ||
143 | =head2 Summary | |
144 | ||
145 | Private API to rest of sv.c | |
146 | ||
147 | new_SV(), del_SV(), | |
148 | ||
149 | new_XIV(), del_XIV(), | |
150 | new_XNV(), del_XNV(), | |
151 | etc | |
152 | ||
153 | Public API: | |
154 | ||
8cf8f3d1 | 155 | sv_report_used(), sv_clean_objs(), sv_clean_all(), sv_free_arenas() |
645c22ef DM |
156 | |
157 | ||
158 | =cut | |
159 | ||
160 | ============================================================================ */ | |
161 | ||
162 | ||
51371543 | 163 | |
4561caa4 CS |
164 | /* |
165 | * "A time to plant, and a time to uproot what was planted..." | |
166 | */ | |
167 | ||
cac9b346 | 168 | |
fd0854ff DM |
169 | #ifdef DEBUG_LEAKING_SCALARS |
170 | # ifdef NETWARE | |
171 | # define FREE_SV_DEBUG_FILE(sv) PerlMemfree((sv)->sv_debug_file) | |
172 | # else | |
173 | # define FREE_SV_DEBUG_FILE(sv) PerlMemShared_free((sv)->sv_debug_file) | |
174 | # endif | |
175 | #else | |
176 | # define FREE_SV_DEBUG_FILE(sv) | |
177 | #endif | |
178 | ||
053fc874 GS |
179 | #define plant_SV(p) \ |
180 | STMT_START { \ | |
fd0854ff | 181 | FREE_SV_DEBUG_FILE(p); \ |
053fc874 GS |
182 | SvANY(p) = (void *)PL_sv_root; \ |
183 | SvFLAGS(p) = SVTYPEMASK; \ | |
184 | PL_sv_root = (p); \ | |
185 | --PL_sv_count; \ | |
186 | } STMT_END | |
a0d0e21e | 187 | |
fba3b22e | 188 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
189 | #define uproot_SV(p) \ |
190 | STMT_START { \ | |
191 | (p) = PL_sv_root; \ | |
192 | PL_sv_root = (SV*)SvANY(p); \ | |
193 | ++PL_sv_count; \ | |
194 | } STMT_END | |
195 | ||
645c22ef | 196 | |
cac9b346 NC |
197 | /* make some more SVs by adding another arena */ |
198 | ||
199 | /* sv_mutex must be held while calling more_sv() */ | |
200 | STATIC SV* | |
201 | S_more_sv(pTHX) | |
202 | { | |
203 | SV* sv; | |
204 | ||
205 | if (PL_nice_chunk) { | |
206 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
207 | PL_nice_chunk = Nullch; | |
208 | PL_nice_chunk_size = 0; | |
209 | } | |
210 | else { | |
211 | char *chunk; /* must use New here to match call to */ | |
2e7ed132 NC |
212 | New(704,chunk,PERL_ARENA_SIZE,char); /* Safefree() in sv_free_arenas() */ |
213 | sv_add_arena(chunk, PERL_ARENA_SIZE, 0); | |
cac9b346 NC |
214 | } |
215 | uproot_SV(sv); | |
216 | return sv; | |
217 | } | |
218 | ||
645c22ef DM |
219 | /* new_SV(): return a new, empty SV head */ |
220 | ||
eba0f806 DM |
221 | #ifdef DEBUG_LEAKING_SCALARS |
222 | /* provide a real function for a debugger to play with */ | |
223 | STATIC SV* | |
224 | S_new_SV(pTHX) | |
225 | { | |
226 | SV* sv; | |
227 | ||
228 | LOCK_SV_MUTEX; | |
229 | if (PL_sv_root) | |
230 | uproot_SV(sv); | |
231 | else | |
cac9b346 | 232 | sv = S_more_sv(aTHX); |
eba0f806 DM |
233 | UNLOCK_SV_MUTEX; |
234 | SvANY(sv) = 0; | |
235 | SvREFCNT(sv) = 1; | |
236 | SvFLAGS(sv) = 0; | |
fd0854ff DM |
237 | sv->sv_debug_optype = PL_op ? PL_op->op_type : 0; |
238 | sv->sv_debug_line = (U16) ((PL_copline == NOLINE) ? | |
239 | (PL_curcop ? CopLINE(PL_curcop) : 0) : PL_copline); | |
240 | sv->sv_debug_inpad = 0; | |
241 | sv->sv_debug_cloned = 0; | |
242 | # ifdef NETWARE | |
243 | sv->sv_debug_file = PL_curcop ? savepv(CopFILE(PL_curcop)): NULL; | |
244 | # else | |
245 | sv->sv_debug_file = PL_curcop ? savesharedpv(CopFILE(PL_curcop)): NULL; | |
246 | # endif | |
247 | ||
eba0f806 DM |
248 | return sv; |
249 | } | |
250 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
251 | ||
252 | #else | |
253 | # define new_SV(p) \ | |
053fc874 GS |
254 | STMT_START { \ |
255 | LOCK_SV_MUTEX; \ | |
256 | if (PL_sv_root) \ | |
257 | uproot_SV(p); \ | |
258 | else \ | |
cac9b346 | 259 | (p) = S_more_sv(aTHX); \ |
053fc874 GS |
260 | UNLOCK_SV_MUTEX; \ |
261 | SvANY(p) = 0; \ | |
262 | SvREFCNT(p) = 1; \ | |
263 | SvFLAGS(p) = 0; \ | |
264 | } STMT_END | |
eba0f806 | 265 | #endif |
463ee0b2 | 266 | |
645c22ef DM |
267 | |
268 | /* del_SV(): return an empty SV head to the free list */ | |
269 | ||
a0d0e21e | 270 | #ifdef DEBUGGING |
4561caa4 | 271 | |
053fc874 GS |
272 | #define del_SV(p) \ |
273 | STMT_START { \ | |
274 | LOCK_SV_MUTEX; \ | |
aea4f609 | 275 | if (DEBUG_D_TEST) \ |
053fc874 GS |
276 | del_sv(p); \ |
277 | else \ | |
278 | plant_SV(p); \ | |
279 | UNLOCK_SV_MUTEX; \ | |
280 | } STMT_END | |
a0d0e21e | 281 | |
76e3520e | 282 | STATIC void |
cea2e8a9 | 283 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 284 | { |
aea4f609 | 285 | if (DEBUG_D_TEST) { |
4633a7c4 | 286 | SV* sva; |
a3b680e6 | 287 | bool ok = 0; |
3280af22 | 288 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
a3b680e6 AL |
289 | SV *sv = sva + 1; |
290 | SV *svend = &sva[SvREFCNT(sva)]; | |
c0ff570e | 291 | if (p >= sv && p < svend) { |
a0d0e21e | 292 | ok = 1; |
c0ff570e NC |
293 | break; |
294 | } | |
a0d0e21e LW |
295 | } |
296 | if (!ok) { | |
0453d815 | 297 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 298 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
299 | "Attempt to free non-arena SV: 0x%"UVxf |
300 | pTHX__FORMAT, PTR2UV(p) pTHX__VALUE); | |
a0d0e21e LW |
301 | return; |
302 | } | |
303 | } | |
4561caa4 | 304 | plant_SV(p); |
463ee0b2 | 305 | } |
a0d0e21e | 306 | |
4561caa4 CS |
307 | #else /* ! DEBUGGING */ |
308 | ||
309 | #define del_SV(p) plant_SV(p) | |
310 | ||
311 | #endif /* DEBUGGING */ | |
463ee0b2 | 312 | |
645c22ef DM |
313 | |
314 | /* | |
ccfc67b7 JH |
315 | =head1 SV Manipulation Functions |
316 | ||
645c22ef DM |
317 | =for apidoc sv_add_arena |
318 | ||
319 | Given a chunk of memory, link it to the head of the list of arenas, | |
320 | and split it into a list of free SVs. | |
321 | ||
322 | =cut | |
323 | */ | |
324 | ||
4633a7c4 | 325 | void |
864dbfa3 | 326 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 327 | { |
4633a7c4 | 328 | SV* sva = (SV*)ptr; |
463ee0b2 LW |
329 | register SV* sv; |
330 | register SV* svend; | |
4633a7c4 LW |
331 | |
332 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 333 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
334 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
335 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
336 | ||
3280af22 NIS |
337 | PL_sv_arenaroot = sva; |
338 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
339 | |
340 | svend = &sva[SvREFCNT(sva) - 1]; | |
341 | sv = sva + 1; | |
463ee0b2 | 342 | while (sv < svend) { |
a0d0e21e | 343 | SvANY(sv) = (void *)(SV*)(sv + 1); |
03e36789 | 344 | #ifdef DEBUGGING |
978b032e | 345 | SvREFCNT(sv) = 0; |
03e36789 NC |
346 | #endif |
347 | /* Must always set typemask because it's awlays checked in on cleanup | |
348 | when the arenas are walked looking for objects. */ | |
8990e307 | 349 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
350 | sv++; |
351 | } | |
352 | SvANY(sv) = 0; | |
03e36789 NC |
353 | #ifdef DEBUGGING |
354 | SvREFCNT(sv) = 0; | |
355 | #endif | |
4633a7c4 LW |
356 | SvFLAGS(sv) = SVTYPEMASK; |
357 | } | |
358 | ||
055972dc DM |
359 | /* visit(): call the named function for each non-free SV in the arenas |
360 | * whose flags field matches the flags/mask args. */ | |
645c22ef | 361 | |
5226ed68 | 362 | STATIC I32 |
055972dc | 363 | S_visit(pTHX_ SVFUNC_t f, U32 flags, U32 mask) |
8990e307 | 364 | { |
4633a7c4 | 365 | SV* sva; |
5226ed68 | 366 | I32 visited = 0; |
8990e307 | 367 | |
3280af22 | 368 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
a3b680e6 AL |
369 | register SV * const svend = &sva[SvREFCNT(sva)]; |
370 | register SV* sv; | |
4561caa4 | 371 | for (sv = sva + 1; sv < svend; ++sv) { |
055972dc DM |
372 | if (SvTYPE(sv) != SVTYPEMASK |
373 | && (sv->sv_flags & mask) == flags | |
374 | && SvREFCNT(sv)) | |
375 | { | |
acfe0abc | 376 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
377 | ++visited; |
378 | } | |
8990e307 LW |
379 | } |
380 | } | |
5226ed68 | 381 | return visited; |
8990e307 LW |
382 | } |
383 | ||
758a08c3 JH |
384 | #ifdef DEBUGGING |
385 | ||
645c22ef DM |
386 | /* called by sv_report_used() for each live SV */ |
387 | ||
388 | static void | |
acfe0abc | 389 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
390 | { |
391 | if (SvTYPE(sv) != SVTYPEMASK) { | |
392 | PerlIO_printf(Perl_debug_log, "****\n"); | |
393 | sv_dump(sv); | |
394 | } | |
395 | } | |
758a08c3 | 396 | #endif |
645c22ef DM |
397 | |
398 | /* | |
399 | =for apidoc sv_report_used | |
400 | ||
401 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
402 | ||
403 | =cut | |
404 | */ | |
405 | ||
8990e307 | 406 | void |
864dbfa3 | 407 | Perl_sv_report_used(pTHX) |
4561caa4 | 408 | { |
ff270d3a | 409 | #ifdef DEBUGGING |
055972dc | 410 | visit(do_report_used, 0, 0); |
ff270d3a | 411 | #endif |
4561caa4 CS |
412 | } |
413 | ||
645c22ef DM |
414 | /* called by sv_clean_objs() for each live SV */ |
415 | ||
416 | static void | |
acfe0abc | 417 | do_clean_objs(pTHX_ SV *sv) |
645c22ef DM |
418 | { |
419 | SV* rv; | |
420 | ||
421 | if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) { | |
422 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv))); | |
423 | if (SvWEAKREF(sv)) { | |
424 | sv_del_backref(sv); | |
425 | SvWEAKREF_off(sv); | |
b162af07 | 426 | SvRV_set(sv, NULL); |
645c22ef DM |
427 | } else { |
428 | SvROK_off(sv); | |
b162af07 | 429 | SvRV_set(sv, NULL); |
645c22ef DM |
430 | SvREFCNT_dec(rv); |
431 | } | |
432 | } | |
433 | ||
434 | /* XXX Might want to check arrays, etc. */ | |
435 | } | |
436 | ||
437 | /* called by sv_clean_objs() for each live SV */ | |
438 | ||
439 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
440 | static void | |
acfe0abc | 441 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef DM |
442 | { |
443 | if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) { | |
444 | if ( SvOBJECT(GvSV(sv)) || | |
445 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || | |
446 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
447 | (GvIO(sv) && SvOBJECT(GvIO(sv))) || | |
448 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) | |
449 | { | |
450 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
ec5f3c78 | 451 | SvFLAGS(sv) |= SVf_BREAK; |
645c22ef DM |
452 | SvREFCNT_dec(sv); |
453 | } | |
454 | } | |
455 | } | |
456 | #endif | |
457 | ||
458 | /* | |
459 | =for apidoc sv_clean_objs | |
460 | ||
461 | Attempt to destroy all objects not yet freed | |
462 | ||
463 | =cut | |
464 | */ | |
465 | ||
4561caa4 | 466 | void |
864dbfa3 | 467 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 468 | { |
3280af22 | 469 | PL_in_clean_objs = TRUE; |
055972dc | 470 | visit(do_clean_objs, SVf_ROK, SVf_ROK); |
4561caa4 | 471 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
2d0f3c12 | 472 | /* some barnacles may yet remain, clinging to typeglobs */ |
055972dc | 473 | visit(do_clean_named_objs, SVt_PVGV, SVTYPEMASK); |
4561caa4 | 474 | #endif |
3280af22 | 475 | PL_in_clean_objs = FALSE; |
4561caa4 CS |
476 | } |
477 | ||
645c22ef DM |
478 | /* called by sv_clean_all() for each live SV */ |
479 | ||
480 | static void | |
acfe0abc | 481 | do_clean_all(pTHX_ SV *sv) |
645c22ef DM |
482 | { |
483 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); | |
484 | SvFLAGS(sv) |= SVf_BREAK; | |
0e705b3b DM |
485 | if (PL_comppad == (AV*)sv) { |
486 | PL_comppad = Nullav; | |
487 | PL_curpad = Null(SV**); | |
488 | } | |
645c22ef DM |
489 | SvREFCNT_dec(sv); |
490 | } | |
491 | ||
492 | /* | |
493 | =for apidoc sv_clean_all | |
494 | ||
495 | Decrement the refcnt of each remaining SV, possibly triggering a | |
496 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 497 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
498 | |
499 | =cut | |
500 | */ | |
501 | ||
5226ed68 | 502 | I32 |
864dbfa3 | 503 | Perl_sv_clean_all(pTHX) |
8990e307 | 504 | { |
5226ed68 | 505 | I32 cleaned; |
3280af22 | 506 | PL_in_clean_all = TRUE; |
055972dc | 507 | cleaned = visit(do_clean_all, 0,0); |
3280af22 | 508 | PL_in_clean_all = FALSE; |
5226ed68 | 509 | return cleaned; |
8990e307 | 510 | } |
463ee0b2 | 511 | |
645c22ef DM |
512 | /* |
513 | =for apidoc sv_free_arenas | |
514 | ||
515 | Deallocate the memory used by all arenas. Note that all the individual SV | |
516 | heads and bodies within the arenas must already have been freed. | |
517 | ||
518 | =cut | |
519 | */ | |
520 | ||
4633a7c4 | 521 | void |
864dbfa3 | 522 | Perl_sv_free_arenas(pTHX) |
4633a7c4 LW |
523 | { |
524 | SV* sva; | |
525 | SV* svanext; | |
612f20c3 | 526 | XPV *arena, *arenanext; |
4633a7c4 LW |
527 | |
528 | /* Free arenas here, but be careful about fake ones. (We assume | |
529 | contiguity of the fake ones with the corresponding real ones.) */ | |
530 | ||
3280af22 | 531 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
532 | svanext = (SV*) SvANY(sva); |
533 | while (svanext && SvFAKE(svanext)) | |
534 | svanext = (SV*) SvANY(svanext); | |
535 | ||
536 | if (!SvFAKE(sva)) | |
1edc1566 | 537 | Safefree((void *)sva); |
4633a7c4 | 538 | } |
5f05dabc | 539 | |
612f20c3 GS |
540 | for (arena = PL_xiv_arenaroot; arena; arena = arenanext) { |
541 | arenanext = (XPV*)arena->xpv_pv; | |
542 | Safefree(arena); | |
543 | } | |
544 | PL_xiv_arenaroot = 0; | |
bf9cdc68 | 545 | PL_xiv_root = 0; |
612f20c3 GS |
546 | |
547 | for (arena = PL_xnv_arenaroot; arena; arena = arenanext) { | |
548 | arenanext = (XPV*)arena->xpv_pv; | |
549 | Safefree(arena); | |
550 | } | |
551 | PL_xnv_arenaroot = 0; | |
bf9cdc68 | 552 | PL_xnv_root = 0; |
612f20c3 GS |
553 | |
554 | for (arena = PL_xrv_arenaroot; arena; arena = arenanext) { | |
555 | arenanext = (XPV*)arena->xpv_pv; | |
556 | Safefree(arena); | |
557 | } | |
558 | PL_xrv_arenaroot = 0; | |
bf9cdc68 | 559 | PL_xrv_root = 0; |
612f20c3 GS |
560 | |
561 | for (arena = PL_xpv_arenaroot; arena; arena = arenanext) { | |
562 | arenanext = (XPV*)arena->xpv_pv; | |
563 | Safefree(arena); | |
564 | } | |
565 | PL_xpv_arenaroot = 0; | |
bf9cdc68 | 566 | PL_xpv_root = 0; |
612f20c3 GS |
567 | |
568 | for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) { | |
569 | arenanext = (XPV*)arena->xpv_pv; | |
570 | Safefree(arena); | |
571 | } | |
572 | PL_xpviv_arenaroot = 0; | |
bf9cdc68 | 573 | PL_xpviv_root = 0; |
612f20c3 GS |
574 | |
575 | for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) { | |
576 | arenanext = (XPV*)arena->xpv_pv; | |
577 | Safefree(arena); | |
578 | } | |
579 | PL_xpvnv_arenaroot = 0; | |
bf9cdc68 | 580 | PL_xpvnv_root = 0; |
612f20c3 GS |
581 | |
582 | for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) { | |
583 | arenanext = (XPV*)arena->xpv_pv; | |
584 | Safefree(arena); | |
585 | } | |
586 | PL_xpvcv_arenaroot = 0; | |
bf9cdc68 | 587 | PL_xpvcv_root = 0; |
612f20c3 GS |
588 | |
589 | for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) { | |
590 | arenanext = (XPV*)arena->xpv_pv; | |
591 | Safefree(arena); | |
592 | } | |
593 | PL_xpvav_arenaroot = 0; | |
bf9cdc68 | 594 | PL_xpvav_root = 0; |
612f20c3 GS |
595 | |
596 | for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) { | |
597 | arenanext = (XPV*)arena->xpv_pv; | |
598 | Safefree(arena); | |
599 | } | |
600 | PL_xpvhv_arenaroot = 0; | |
bf9cdc68 | 601 | PL_xpvhv_root = 0; |
612f20c3 GS |
602 | |
603 | for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) { | |
604 | arenanext = (XPV*)arena->xpv_pv; | |
605 | Safefree(arena); | |
606 | } | |
607 | PL_xpvmg_arenaroot = 0; | |
bf9cdc68 | 608 | PL_xpvmg_root = 0; |
612f20c3 | 609 | |
727879eb NC |
610 | for (arena = (XPV*)PL_xpvgv_arenaroot; arena; arena = arenanext) { |
611 | arenanext = (XPV*)arena->xpv_pv; | |
612 | Safefree(arena); | |
613 | } | |
614 | PL_xpvgv_arenaroot = 0; | |
615 | PL_xpvgv_root = 0; | |
616 | ||
612f20c3 GS |
617 | for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) { |
618 | arenanext = (XPV*)arena->xpv_pv; | |
619 | Safefree(arena); | |
620 | } | |
621 | PL_xpvlv_arenaroot = 0; | |
bf9cdc68 | 622 | PL_xpvlv_root = 0; |
612f20c3 GS |
623 | |
624 | for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) { | |
625 | arenanext = (XPV*)arena->xpv_pv; | |
626 | Safefree(arena); | |
627 | } | |
628 | PL_xpvbm_arenaroot = 0; | |
bf9cdc68 | 629 | PL_xpvbm_root = 0; |
612f20c3 | 630 | |
b1135e3d NC |
631 | { |
632 | HE *he; | |
633 | HE *he_next; | |
634 | for (he = PL_he_arenaroot; he; he = he_next) { | |
635 | he_next = HeNEXT(he); | |
636 | Safefree(he); | |
637 | } | |
612f20c3 GS |
638 | } |
639 | PL_he_arenaroot = 0; | |
bf9cdc68 | 640 | PL_he_root = 0; |
612f20c3 | 641 | |
892b45be | 642 | #if defined(USE_ITHREADS) |
b1135e3d NC |
643 | { |
644 | struct ptr_tbl_ent *pte; | |
645 | struct ptr_tbl_ent *pte_next; | |
646 | for (pte = PL_pte_arenaroot; pte; pte = pte_next) { | |
647 | pte_next = pte->next; | |
648 | Safefree(pte); | |
649 | } | |
32e691d0 NC |
650 | } |
651 | PL_pte_arenaroot = 0; | |
652 | PL_pte_root = 0; | |
892b45be | 653 | #endif |
32e691d0 | 654 | |
3280af22 NIS |
655 | if (PL_nice_chunk) |
656 | Safefree(PL_nice_chunk); | |
657 | PL_nice_chunk = Nullch; | |
658 | PL_nice_chunk_size = 0; | |
659 | PL_sv_arenaroot = 0; | |
660 | PL_sv_root = 0; | |
4633a7c4 LW |
661 | } |
662 | ||
29489e7c DM |
663 | /* --------------------------------------------------------------------- |
664 | * | |
665 | * support functions for report_uninit() | |
666 | */ | |
667 | ||
668 | /* the maxiumum size of array or hash where we will scan looking | |
669 | * for the undefined element that triggered the warning */ | |
670 | ||
671 | #define FUV_MAX_SEARCH_SIZE 1000 | |
672 | ||
673 | /* Look for an entry in the hash whose value has the same SV as val; | |
674 | * If so, return a mortal copy of the key. */ | |
675 | ||
676 | STATIC SV* | |
677 | S_find_hash_subscript(pTHX_ HV *hv, SV* val) | |
678 | { | |
27da23d5 | 679 | dVAR; |
29489e7c | 680 | register HE **array; |
29489e7c DM |
681 | I32 i; |
682 | ||
683 | if (!hv || SvMAGICAL(hv) || !HvARRAY(hv) || | |
684 | (HvTOTALKEYS(hv) > FUV_MAX_SEARCH_SIZE)) | |
685 | return Nullsv; | |
686 | ||
687 | array = HvARRAY(hv); | |
688 | ||
689 | for (i=HvMAX(hv); i>0; i--) { | |
f54cb97a | 690 | register HE *entry; |
29489e7c DM |
691 | for (entry = array[i]; entry; entry = HeNEXT(entry)) { |
692 | if (HeVAL(entry) != val) | |
693 | continue; | |
694 | if ( HeVAL(entry) == &PL_sv_undef || | |
695 | HeVAL(entry) == &PL_sv_placeholder) | |
696 | continue; | |
697 | if (!HeKEY(entry)) | |
698 | return Nullsv; | |
699 | if (HeKLEN(entry) == HEf_SVKEY) | |
700 | return sv_mortalcopy(HeKEY_sv(entry)); | |
701 | return sv_2mortal(newSVpvn(HeKEY(entry), HeKLEN(entry))); | |
702 | } | |
703 | } | |
704 | return Nullsv; | |
705 | } | |
706 | ||
707 | /* Look for an entry in the array whose value has the same SV as val; | |
708 | * If so, return the index, otherwise return -1. */ | |
709 | ||
710 | STATIC I32 | |
711 | S_find_array_subscript(pTHX_ AV *av, SV* val) | |
712 | { | |
713 | SV** svp; | |
714 | I32 i; | |
715 | if (!av || SvMAGICAL(av) || !AvARRAY(av) || | |
716 | (AvFILLp(av) > FUV_MAX_SEARCH_SIZE)) | |
717 | return -1; | |
718 | ||
719 | svp = AvARRAY(av); | |
720 | for (i=AvFILLp(av); i>=0; i--) { | |
721 | if (svp[i] == val && svp[i] != &PL_sv_undef) | |
722 | return i; | |
723 | } | |
724 | return -1; | |
725 | } | |
726 | ||
727 | /* S_varname(): return the name of a variable, optionally with a subscript. | |
728 | * If gv is non-zero, use the name of that global, along with gvtype (one | |
729 | * of "$", "@", "%"); otherwise use the name of the lexical at pad offset | |
730 | * targ. Depending on the value of the subscript_type flag, return: | |
731 | */ | |
732 | ||
733 | #define FUV_SUBSCRIPT_NONE 1 /* "@foo" */ | |
734 | #define FUV_SUBSCRIPT_ARRAY 2 /* "$foo[aindex]" */ | |
735 | #define FUV_SUBSCRIPT_HASH 3 /* "$foo{keyname}" */ | |
736 | #define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */ | |
737 | ||
738 | STATIC SV* | |
bfed75c6 | 739 | S_varname(pTHX_ GV *gv, const char *gvtype, PADOFFSET targ, |
29489e7c DM |
740 | SV* keyname, I32 aindex, int subscript_type) |
741 | { | |
742 | AV *av; | |
a3b680e6 | 743 | SV *sv; |
29489e7c | 744 | |
a3b680e6 | 745 | SV * const name = sv_newmortal(); |
29489e7c DM |
746 | if (gv) { |
747 | ||
748 | /* simulate gv_fullname4(), but add literal '^' for $^FOO names | |
749 | * XXX get rid of all this if gv_fullnameX() ever supports this | |
750 | * directly */ | |
751 | ||
bfed75c6 | 752 | const char *p; |
29489e7c DM |
753 | HV *hv = GvSTASH(gv); |
754 | sv_setpv(name, gvtype); | |
755 | if (!hv) | |
756 | p = "???"; | |
bfed75c6 | 757 | else if (!(p=HvNAME(hv))) |
29489e7c | 758 | p = "__ANON__"; |
29489e7c DM |
759 | if (strNE(p, "main")) { |
760 | sv_catpv(name,p); | |
761 | sv_catpvn(name,"::", 2); | |
762 | } | |
763 | if (GvNAMELEN(gv)>= 1 && | |
764 | ((unsigned int)*GvNAME(gv)) <= 26) | |
765 | { /* handle $^FOO */ | |
766 | Perl_sv_catpvf(aTHX_ name,"^%c", *GvNAME(gv) + 'A' - 1); | |
767 | sv_catpvn(name,GvNAME(gv)+1,GvNAMELEN(gv)-1); | |
768 | } | |
769 | else | |
770 | sv_catpvn(name,GvNAME(gv),GvNAMELEN(gv)); | |
771 | } | |
772 | else { | |
773 | U32 u; | |
774 | CV *cv = find_runcv(&u); | |
775 | if (!cv || !CvPADLIST(cv)) | |
776 | return Nullsv;; | |
777 | av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE)); | |
778 | sv = *av_fetch(av, targ, FALSE); | |
779 | /* SvLEN in a pad name is not to be trusted */ | |
780 | sv_setpv(name, SvPV_nolen(sv)); | |
781 | } | |
782 | ||
783 | if (subscript_type == FUV_SUBSCRIPT_HASH) { | |
784 | *SvPVX(name) = '$'; | |
785 | sv = NEWSV(0,0); | |
786 | Perl_sv_catpvf(aTHX_ name, "{%s}", | |
787 | pv_display(sv,SvPVX(keyname), SvCUR(keyname), 0, 32)); | |
788 | SvREFCNT_dec(sv); | |
789 | } | |
790 | else if (subscript_type == FUV_SUBSCRIPT_ARRAY) { | |
791 | *SvPVX(name) = '$'; | |
265a12b8 | 792 | Perl_sv_catpvf(aTHX_ name, "[%"IVdf"]", (IV)aindex); |
29489e7c DM |
793 | } |
794 | else if (subscript_type == FUV_SUBSCRIPT_WITHIN) | |
795 | sv_insert(name, 0, 0, "within ", 7); | |
796 | ||
797 | return name; | |
798 | } | |
799 | ||
800 | ||
801 | /* | |
802 | =for apidoc find_uninit_var | |
803 | ||
804 | Find the name of the undefined variable (if any) that caused the operator o | |
805 | to issue a "Use of uninitialized value" warning. | |
806 | If match is true, only return a name if it's value matches uninit_sv. | |
807 | So roughly speaking, if a unary operator (such as OP_COS) generates a | |
808 | warning, then following the direct child of the op may yield an | |
809 | OP_PADSV or OP_GV that gives the name of the undefined variable. On the | |
810 | other hand, with OP_ADD there are two branches to follow, so we only print | |
811 | the variable name if we get an exact match. | |
812 | ||
813 | The name is returned as a mortal SV. | |
814 | ||
815 | Assumes that PL_op is the op that originally triggered the error, and that | |
816 | PL_comppad/PL_curpad points to the currently executing pad. | |
817 | ||
818 | =cut | |
819 | */ | |
820 | ||
821 | STATIC SV * | |
822 | S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match) | |
823 | { | |
27da23d5 | 824 | dVAR; |
29489e7c DM |
825 | SV *sv; |
826 | AV *av; | |
827 | SV **svp; | |
828 | GV *gv; | |
829 | OP *o, *o2, *kid; | |
830 | ||
831 | if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef || | |
832 | uninit_sv == &PL_sv_placeholder))) | |
833 | return Nullsv; | |
834 | ||
835 | switch (obase->op_type) { | |
836 | ||
837 | case OP_RV2AV: | |
838 | case OP_RV2HV: | |
839 | case OP_PADAV: | |
840 | case OP_PADHV: | |
841 | { | |
f54cb97a AL |
842 | const bool pad = (obase->op_type == OP_PADAV || obase->op_type == OP_PADHV); |
843 | const bool hash = (obase->op_type == OP_PADHV || obase->op_type == OP_RV2HV); | |
112dcc46 RGS |
844 | I32 index = 0; |
845 | SV *keysv = Nullsv; | |
29489e7c DM |
846 | int subscript_type = FUV_SUBSCRIPT_WITHIN; |
847 | ||
848 | if (pad) { /* @lex, %lex */ | |
849 | sv = PAD_SVl(obase->op_targ); | |
850 | gv = Nullgv; | |
851 | } | |
852 | else { | |
853 | if (cUNOPx(obase)->op_first->op_type == OP_GV) { | |
854 | /* @global, %global */ | |
855 | gv = cGVOPx_gv(cUNOPx(obase)->op_first); | |
856 | if (!gv) | |
857 | break; | |
858 | sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv); | |
859 | } | |
860 | else /* @{expr}, %{expr} */ | |
861 | return find_uninit_var(cUNOPx(obase)->op_first, | |
862 | uninit_sv, match); | |
863 | } | |
864 | ||
865 | /* attempt to find a match within the aggregate */ | |
866 | if (hash) { | |
867 | keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
868 | if (keysv) | |
869 | subscript_type = FUV_SUBSCRIPT_HASH; | |
870 | } | |
871 | else { | |
872 | index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
873 | if (index >= 0) | |
874 | subscript_type = FUV_SUBSCRIPT_ARRAY; | |
875 | } | |
876 | ||
877 | if (match && subscript_type == FUV_SUBSCRIPT_WITHIN) | |
878 | break; | |
879 | ||
880 | return S_varname(aTHX_ gv, hash ? "%" : "@", obase->op_targ, | |
881 | keysv, index, subscript_type); | |
882 | } | |
883 | ||
884 | case OP_PADSV: | |
885 | if (match && PAD_SVl(obase->op_targ) != uninit_sv) | |
886 | break; | |
887 | return S_varname(aTHX_ Nullgv, "$", obase->op_targ, | |
888 | Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
889 | ||
890 | case OP_GVSV: | |
891 | gv = cGVOPx_gv(obase); | |
892 | if (!gv || (match && GvSV(gv) != uninit_sv)) | |
893 | break; | |
894 | return S_varname(aTHX_ gv, "$", 0, Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
895 | ||
896 | case OP_AELEMFAST: | |
897 | if (obase->op_flags & OPf_SPECIAL) { /* lexical array */ | |
898 | if (match) { | |
899 | av = (AV*)PAD_SV(obase->op_targ); | |
900 | if (!av || SvRMAGICAL(av)) | |
901 | break; | |
902 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
903 | if (!svp || *svp != uninit_sv) | |
904 | break; | |
905 | } | |
906 | return S_varname(aTHX_ Nullgv, "$", obase->op_targ, | |
907 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
908 | } | |
909 | else { | |
910 | gv = cGVOPx_gv(obase); | |
911 | if (!gv) | |
912 | break; | |
913 | if (match) { | |
914 | av = GvAV(gv); | |
915 | if (!av || SvRMAGICAL(av)) | |
916 | break; | |
917 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
918 | if (!svp || *svp != uninit_sv) | |
919 | break; | |
920 | } | |
921 | return S_varname(aTHX_ gv, "$", 0, | |
922 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
923 | } | |
924 | break; | |
925 | ||
926 | case OP_EXISTS: | |
927 | o = cUNOPx(obase)->op_first; | |
928 | if (!o || o->op_type != OP_NULL || | |
929 | ! (o->op_targ == OP_AELEM || o->op_targ == OP_HELEM)) | |
930 | break; | |
931 | return find_uninit_var(cBINOPo->op_last, uninit_sv, match); | |
932 | ||
933 | case OP_AELEM: | |
934 | case OP_HELEM: | |
935 | if (PL_op == obase) | |
936 | /* $a[uninit_expr] or $h{uninit_expr} */ | |
937 | return find_uninit_var(cBINOPx(obase)->op_last, uninit_sv, match); | |
938 | ||
939 | gv = Nullgv; | |
940 | o = cBINOPx(obase)->op_first; | |
941 | kid = cBINOPx(obase)->op_last; | |
942 | ||
943 | /* get the av or hv, and optionally the gv */ | |
944 | sv = Nullsv; | |
945 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) { | |
946 | sv = PAD_SV(o->op_targ); | |
947 | } | |
948 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_RV2HV) | |
949 | && cUNOPo->op_first->op_type == OP_GV) | |
950 | { | |
951 | gv = cGVOPx_gv(cUNOPo->op_first); | |
952 | if (!gv) | |
953 | break; | |
954 | sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv); | |
955 | } | |
956 | if (!sv) | |
957 | break; | |
958 | ||
959 | if (kid && kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) { | |
960 | /* index is constant */ | |
961 | if (match) { | |
962 | if (SvMAGICAL(sv)) | |
963 | break; | |
964 | if (obase->op_type == OP_HELEM) { | |
965 | HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0); | |
966 | if (!he || HeVAL(he) != uninit_sv) | |
967 | break; | |
968 | } | |
969 | else { | |
970 | svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE); | |
971 | if (!svp || *svp != uninit_sv) | |
972 | break; | |
973 | } | |
974 | } | |
975 | if (obase->op_type == OP_HELEM) | |
976 | return S_varname(aTHX_ gv, "%", o->op_targ, | |
977 | cSVOPx_sv(kid), 0, FUV_SUBSCRIPT_HASH); | |
978 | else | |
979 | return S_varname(aTHX_ gv, "@", o->op_targ, Nullsv, | |
980 | SvIV(cSVOPx_sv(kid)), FUV_SUBSCRIPT_ARRAY); | |
981 | ; | |
982 | } | |
983 | else { | |
984 | /* index is an expression; | |
985 | * attempt to find a match within the aggregate */ | |
986 | if (obase->op_type == OP_HELEM) { | |
987 | SV *keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
988 | if (keysv) | |
989 | return S_varname(aTHX_ gv, "%", o->op_targ, | |
990 | keysv, 0, FUV_SUBSCRIPT_HASH); | |
991 | } | |
992 | else { | |
f54cb97a | 993 | const I32 index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); |
29489e7c | 994 | if (index >= 0) |
f54cb97a | 995 | return S_varname(aTHX_ gv, "@", o->op_targ, |
29489e7c DM |
996 | Nullsv, index, FUV_SUBSCRIPT_ARRAY); |
997 | } | |
998 | if (match) | |
999 | break; | |
1000 | return S_varname(aTHX_ gv, | |
1001 | (o->op_type == OP_PADAV || o->op_type == OP_RV2AV) | |
1002 | ? "@" : "%", | |
1003 | o->op_targ, Nullsv, 0, FUV_SUBSCRIPT_WITHIN); | |
1004 | } | |
1005 | ||
1006 | break; | |
1007 | ||
1008 | case OP_AASSIGN: | |
1009 | /* only examine RHS */ | |
1010 | return find_uninit_var(cBINOPx(obase)->op_first, uninit_sv, match); | |
1011 | ||
1012 | case OP_OPEN: | |
1013 | o = cUNOPx(obase)->op_first; | |
1014 | if (o->op_type == OP_PUSHMARK) | |
1015 | o = o->op_sibling; | |
1016 | ||
1017 | if (!o->op_sibling) { | |
1018 | /* one-arg version of open is highly magical */ | |
1019 | ||
1020 | if (o->op_type == OP_GV) { /* open FOO; */ | |
1021 | gv = cGVOPx_gv(o); | |
1022 | if (match && GvSV(gv) != uninit_sv) | |
1023 | break; | |
7a5fa8a2 | 1024 | return S_varname(aTHX_ gv, "$", 0, |
29489e7c DM |
1025 | Nullsv, 0, FUV_SUBSCRIPT_NONE); |
1026 | } | |
1027 | /* other possibilities not handled are: | |
1028 | * open $x; or open my $x; should return '${*$x}' | |
1029 | * open expr; should return '$'.expr ideally | |
1030 | */ | |
1031 | break; | |
1032 | } | |
1033 | goto do_op; | |
1034 | ||
1035 | /* ops where $_ may be an implicit arg */ | |
1036 | case OP_TRANS: | |
1037 | case OP_SUBST: | |
1038 | case OP_MATCH: | |
1039 | if ( !(obase->op_flags & OPf_STACKED)) { | |
1040 | if (uninit_sv == ((obase->op_private & OPpTARGET_MY) | |
1041 | ? PAD_SVl(obase->op_targ) | |
1042 | : DEFSV)) | |
1043 | { | |
1044 | sv = sv_newmortal(); | |
1045 | sv_setpv(sv, "$_"); | |
1046 | return sv; | |
1047 | } | |
1048 | } | |
1049 | goto do_op; | |
1050 | ||
1051 | case OP_PRTF: | |
1052 | case OP_PRINT: | |
1053 | /* skip filehandle as it can't produce 'undef' warning */ | |
1054 | o = cUNOPx(obase)->op_first; | |
1055 | if ((obase->op_flags & OPf_STACKED) && o->op_type == OP_PUSHMARK) | |
1056 | o = o->op_sibling->op_sibling; | |
1057 | goto do_op2; | |
1058 | ||
1059 | ||
e21bd382 | 1060 | case OP_RV2SV: |
29489e7c DM |
1061 | case OP_CUSTOM: |
1062 | case OP_ENTERSUB: | |
1063 | match = 1; /* XS or custom code could trigger random warnings */ | |
1064 | goto do_op; | |
1065 | ||
1066 | case OP_SCHOMP: | |
1067 | case OP_CHOMP: | |
1068 | if (SvROK(PL_rs) && uninit_sv == SvRV(PL_rs)) | |
1069 | return sv_2mortal(newSVpv("${$/}", 0)); | |
1070 | /* FALL THROUGH */ | |
1071 | ||
1072 | default: | |
1073 | do_op: | |
1074 | if (!(obase->op_flags & OPf_KIDS)) | |
1075 | break; | |
1076 | o = cUNOPx(obase)->op_first; | |
1077 | ||
1078 | do_op2: | |
1079 | if (!o) | |
1080 | break; | |
1081 | ||
1082 | /* if all except one arg are constant, or have no side-effects, | |
1083 | * or are optimized away, then it's unambiguous */ | |
1084 | o2 = Nullop; | |
1085 | for (kid=o; kid; kid = kid->op_sibling) { | |
1086 | if (kid && | |
1087 | ( (kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) | |
1088 | || (kid->op_type == OP_NULL && ! (kid->op_flags & OPf_KIDS)) | |
1089 | || (kid->op_type == OP_PUSHMARK) | |
1090 | ) | |
1091 | ) | |
1092 | continue; | |
1093 | if (o2) { /* more than one found */ | |
1094 | o2 = Nullop; | |
1095 | break; | |
1096 | } | |
1097 | o2 = kid; | |
1098 | } | |
1099 | if (o2) | |
1100 | return find_uninit_var(o2, uninit_sv, match); | |
1101 | ||
1102 | /* scan all args */ | |
1103 | while (o) { | |
1104 | sv = find_uninit_var(o, uninit_sv, 1); | |
1105 | if (sv) | |
1106 | return sv; | |
1107 | o = o->op_sibling; | |
1108 | } | |
1109 | break; | |
1110 | } | |
1111 | return Nullsv; | |
1112 | } | |
1113 | ||
1114 | ||
645c22ef DM |
1115 | /* |
1116 | =for apidoc report_uninit | |
1117 | ||
1118 | Print appropriate "Use of uninitialized variable" warning | |
1119 | ||
1120 | =cut | |
1121 | */ | |
1122 | ||
1d7c1841 | 1123 | void |
29489e7c DM |
1124 | Perl_report_uninit(pTHX_ SV* uninit_sv) |
1125 | { | |
1126 | if (PL_op) { | |
112dcc46 | 1127 | SV* varname = Nullsv; |
29489e7c DM |
1128 | if (uninit_sv) { |
1129 | varname = find_uninit_var(PL_op, uninit_sv,0); | |
1130 | if (varname) | |
1131 | sv_insert(varname, 0, 0, " ", 1); | |
1132 | } | |
9014280d | 1133 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
29489e7c DM |
1134 | varname ? SvPV_nolen(varname) : "", |
1135 | " in ", OP_DESC(PL_op)); | |
1136 | } | |
1d7c1841 | 1137 | else |
29489e7c DM |
1138 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
1139 | "", "", ""); | |
1d7c1841 GS |
1140 | } |
1141 | ||
645c22ef | 1142 | |
cac9b346 | 1143 | /* allocate another arena's worth of struct xrv */ |
645c22ef | 1144 | |
76e3520e | 1145 | STATIC void |
cac9b346 | 1146 | S_more_xrv(pTHX) |
463ee0b2 | 1147 | { |
cac9b346 NC |
1148 | XRV* xrv; |
1149 | XRV* xrvend; | |
1150 | XPV *ptr; | |
1151 | New(712, ptr, PERL_ARENA_SIZE/sizeof(XPV), XPV); | |
1152 | ptr->xpv_pv = (char*)PL_xrv_arenaroot; | |
1153 | PL_xrv_arenaroot = ptr; | |
1154 | ||
1155 | xrv = (XRV*) ptr; | |
1156 | xrvend = &xrv[PERL_ARENA_SIZE / sizeof(XRV) - 1]; | |
1157 | xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1; | |
1158 | PL_xrv_root = xrv; | |
1159 | while (xrv < xrvend) { | |
1160 | xrv->xrv_rv = (SV*)(xrv + 1); | |
1161 | xrv++; | |
1162 | } | |
1163 | xrv->xrv_rv = 0; | |
463ee0b2 LW |
1164 | } |
1165 | ||
645c22ef DM |
1166 | /* allocate another arena's worth of IV bodies */ |
1167 | ||
cbe51380 | 1168 | STATIC void |
cea2e8a9 | 1169 | S_more_xiv(pTHX) |
463ee0b2 | 1170 | { |
cac9b346 NC |
1171 | IV* xiv; |
1172 | IV* xivend; | |
8c52afec | 1173 | XPV* ptr; |
9c17f24a | 1174 | New(705, ptr, PERL_ARENA_SIZE/sizeof(XPV), XPV); |
645c22ef | 1175 | ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */ |
3280af22 | 1176 | PL_xiv_arenaroot = ptr; /* to keep Purify happy */ |
a0d0e21e | 1177 | |
ea7c11a3 | 1178 | xiv = (IV*) ptr; |
9c17f24a | 1179 | xivend = &xiv[PERL_ARENA_SIZE / sizeof(IV) - 1]; |
645c22ef | 1180 | xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */ |
3280af22 | 1181 | PL_xiv_root = xiv; |
463ee0b2 | 1182 | while (xiv < xivend) { |
ea7c11a3 | 1183 | *(IV**)xiv = (IV *)(xiv + 1); |
463ee0b2 LW |
1184 | xiv++; |
1185 | } | |
ea7c11a3 | 1186 | *(IV**)xiv = 0; |
463ee0b2 LW |
1187 | } |
1188 | ||
645c22ef DM |
1189 | /* allocate another arena's worth of NV bodies */ |
1190 | ||
cbe51380 | 1191 | STATIC void |
cea2e8a9 | 1192 | S_more_xnv(pTHX) |
463ee0b2 | 1193 | { |
cac9b346 NC |
1194 | NV* xnv; |
1195 | NV* xnvend; | |
612f20c3 | 1196 | XPV *ptr; |
9c17f24a | 1197 | New(711, ptr, PERL_ARENA_SIZE/sizeof(XPV), XPV); |
612f20c3 GS |
1198 | ptr->xpv_pv = (char*)PL_xnv_arenaroot; |
1199 | PL_xnv_arenaroot = ptr; | |
1200 | ||
1201 | xnv = (NV*) ptr; | |
9c17f24a | 1202 | xnvend = &xnv[PERL_ARENA_SIZE / sizeof(NV) - 1]; |
65202027 | 1203 | xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */ |
3280af22 | 1204 | PL_xnv_root = xnv; |
463ee0b2 | 1205 | while (xnv < xnvend) { |
65202027 | 1206 | *(NV**)xnv = (NV*)(xnv + 1); |
463ee0b2 LW |
1207 | xnv++; |
1208 | } | |
cac9b346 NC |
1209 | *(NV**)xnv = 0; |
1210 | } | |
1211 | ||
1212 | /* allocate another arena's worth of struct xpv */ | |
1213 | ||
1214 | STATIC void | |
1215 | S_more_xpv(pTHX) | |
1216 | { | |
1217 | XPV* xpv; | |
1218 | XPV* xpvend; | |
1219 | New(713, xpv, PERL_ARENA_SIZE/sizeof(XPV), XPV); | |
1220 | xpv->xpv_pv = (char*)PL_xpv_arenaroot; | |
1221 | PL_xpv_arenaroot = xpv; | |
1222 | ||
1223 | xpvend = &xpv[PERL_ARENA_SIZE / sizeof(XPV) - 1]; | |
1224 | PL_xpv_root = ++xpv; | |
1225 | while (xpv < xpvend) { | |
1226 | xpv->xpv_pv = (char*)(xpv + 1); | |
1227 | xpv++; | |
1228 | } | |
1229 | xpv->xpv_pv = 0; | |
1230 | } | |
1231 | ||
1232 | /* allocate another arena's worth of struct xpviv */ | |
1233 | ||
1234 | STATIC void | |
1235 | S_more_xpviv(pTHX) | |
1236 | { | |
1237 | XPVIV* xpviv; | |
1238 | XPVIV* xpvivend; | |
1239 | New(714, xpviv, PERL_ARENA_SIZE/sizeof(XPVIV), XPVIV); | |
1240 | xpviv->xpv_pv = (char*)PL_xpviv_arenaroot; | |
1241 | PL_xpviv_arenaroot = xpviv; | |
1242 | ||
1243 | xpvivend = &xpviv[PERL_ARENA_SIZE / sizeof(XPVIV) - 1]; | |
1244 | PL_xpviv_root = ++xpviv; | |
1245 | while (xpviv < xpvivend) { | |
1246 | xpviv->xpv_pv = (char*)(xpviv + 1); | |
1247 | xpviv++; | |
1248 | } | |
1249 | xpviv->xpv_pv = 0; | |
1250 | } | |
1251 | ||
1252 | /* allocate another arena's worth of struct xpvnv */ | |
1253 | ||
1254 | STATIC void | |
1255 | S_more_xpvnv(pTHX) | |
1256 | { | |
1257 | XPVNV* xpvnv; | |
1258 | XPVNV* xpvnvend; | |
1259 | New(715, xpvnv, PERL_ARENA_SIZE/sizeof(XPVNV), XPVNV); | |
1260 | xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot; | |
1261 | PL_xpvnv_arenaroot = xpvnv; | |
1262 | ||
1263 | xpvnvend = &xpvnv[PERL_ARENA_SIZE / sizeof(XPVNV) - 1]; | |
1264 | PL_xpvnv_root = ++xpvnv; | |
1265 | while (xpvnv < xpvnvend) { | |
1266 | xpvnv->xpv_pv = (char*)(xpvnv + 1); | |
1267 | xpvnv++; | |
1268 | } | |
1269 | xpvnv->xpv_pv = 0; | |
1270 | } | |
1271 | ||
1272 | /* allocate another arena's worth of struct xpvcv */ | |
1273 | ||
1274 | STATIC void | |
1275 | S_more_xpvcv(pTHX) | |
1276 | { | |
1277 | XPVCV* xpvcv; | |
1278 | XPVCV* xpvcvend; | |
1279 | New(716, xpvcv, PERL_ARENA_SIZE/sizeof(XPVCV), XPVCV); | |
1280 | xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot; | |
1281 | PL_xpvcv_arenaroot = xpvcv; | |
1282 | ||
1283 | xpvcvend = &xpvcv[PERL_ARENA_SIZE / sizeof(XPVCV) - 1]; | |
1284 | PL_xpvcv_root = ++xpvcv; | |
1285 | while (xpvcv < xpvcvend) { | |
1286 | xpvcv->xpv_pv = (char*)(xpvcv + 1); | |
1287 | xpvcv++; | |
1288 | } | |
1289 | xpvcv->xpv_pv = 0; | |
1290 | } | |
1291 | ||
1292 | /* allocate another arena's worth of struct xpvav */ | |
1293 | ||
1294 | STATIC void | |
1295 | S_more_xpvav(pTHX) | |
1296 | { | |
1297 | XPVAV* xpvav; | |
1298 | XPVAV* xpvavend; | |
1299 | New(717, xpvav, PERL_ARENA_SIZE/sizeof(XPVAV), XPVAV); | |
1300 | xpvav->xav_array = (char*)PL_xpvav_arenaroot; | |
1301 | PL_xpvav_arenaroot = xpvav; | |
1302 | ||
1303 | xpvavend = &xpvav[PERL_ARENA_SIZE / sizeof(XPVAV) - 1]; | |
1304 | PL_xpvav_root = ++xpvav; | |
1305 | while (xpvav < xpvavend) { | |
1306 | xpvav->xav_array = (char*)(xpvav + 1); | |
1307 | xpvav++; | |
1308 | } | |
1309 | xpvav->xav_array = 0; | |
1310 | } | |
1311 | ||
1312 | /* allocate another arena's worth of struct xpvhv */ | |
1313 | ||
1314 | STATIC void | |
1315 | S_more_xpvhv(pTHX) | |
1316 | { | |
1317 | XPVHV* xpvhv; | |
1318 | XPVHV* xpvhvend; | |
1319 | New(718, xpvhv, PERL_ARENA_SIZE/sizeof(XPVHV), XPVHV); | |
1320 | xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot; | |
1321 | PL_xpvhv_arenaroot = xpvhv; | |
1322 | ||
1323 | xpvhvend = &xpvhv[PERL_ARENA_SIZE / sizeof(XPVHV) - 1]; | |
1324 | PL_xpvhv_root = ++xpvhv; | |
1325 | while (xpvhv < xpvhvend) { | |
1326 | xpvhv->xhv_array = (char*)(xpvhv + 1); | |
1327 | xpvhv++; | |
1328 | } | |
1329 | xpvhv->xhv_array = 0; | |
1330 | } | |
1331 | ||
1332 | /* allocate another arena's worth of struct xpvmg */ | |
1333 | ||
1334 | STATIC void | |
1335 | S_more_xpvmg(pTHX) | |
1336 | { | |
1337 | XPVMG* xpvmg; | |
1338 | XPVMG* xpvmgend; | |
1339 | New(719, xpvmg, PERL_ARENA_SIZE/sizeof(XPVMG), XPVMG); | |
1340 | xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot; | |
1341 | PL_xpvmg_arenaroot = xpvmg; | |
1342 | ||
1343 | xpvmgend = &xpvmg[PERL_ARENA_SIZE / sizeof(XPVMG) - 1]; | |
1344 | PL_xpvmg_root = ++xpvmg; | |
1345 | while (xpvmg < xpvmgend) { | |
1346 | xpvmg->xpv_pv = (char*)(xpvmg + 1); | |
1347 | xpvmg++; | |
1348 | } | |
1349 | xpvmg->xpv_pv = 0; | |
1350 | } | |
1351 | ||
1352 | /* allocate another arena's worth of struct xpvgv */ | |
1353 | ||
1354 | STATIC void | |
1355 | S_more_xpvgv(pTHX) | |
1356 | { | |
1357 | XPVGV* xpvgv; | |
1358 | XPVGV* xpvgvend; | |
1359 | New(720, xpvgv, PERL_ARENA_SIZE/sizeof(XPVGV), XPVGV); | |
1360 | xpvgv->xpv_pv = (char*)PL_xpvgv_arenaroot; | |
1361 | PL_xpvgv_arenaroot = xpvgv; | |
1362 | ||
1363 | xpvgvend = &xpvgv[PERL_ARENA_SIZE / sizeof(XPVGV) - 1]; | |
1364 | PL_xpvgv_root = ++xpvgv; | |
1365 | while (xpvgv < xpvgvend) { | |
1366 | xpvgv->xpv_pv = (char*)(xpvgv + 1); | |
1367 | xpvgv++; | |
1368 | } | |
1369 | xpvgv->xpv_pv = 0; | |
1370 | } | |
1371 | ||
1372 | /* allocate another arena's worth of struct xpvlv */ | |
1373 | ||
1374 | STATIC void | |
1375 | S_more_xpvlv(pTHX) | |
1376 | { | |
1377 | XPVLV* xpvlv; | |
1378 | XPVLV* xpvlvend; | |
1379 | New(720, xpvlv, PERL_ARENA_SIZE/sizeof(XPVLV), XPVLV); | |
1380 | xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot; | |
1381 | PL_xpvlv_arenaroot = xpvlv; | |
1382 | ||
1383 | xpvlvend = &xpvlv[PERL_ARENA_SIZE / sizeof(XPVLV) - 1]; | |
1384 | PL_xpvlv_root = ++xpvlv; | |
1385 | while (xpvlv < xpvlvend) { | |
1386 | xpvlv->xpv_pv = (char*)(xpvlv + 1); | |
1387 | xpvlv++; | |
1388 | } | |
1389 | xpvlv->xpv_pv = 0; | |
1390 | } | |
1391 | ||
1392 | /* allocate another arena's worth of struct xpvbm */ | |
1393 | ||
1394 | STATIC void | |
1395 | S_more_xpvbm(pTHX) | |
1396 | { | |
1397 | XPVBM* xpvbm; | |
1398 | XPVBM* xpvbmend; | |
1399 | New(721, xpvbm, PERL_ARENA_SIZE/sizeof(XPVBM), XPVBM); | |
1400 | xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot; | |
1401 | PL_xpvbm_arenaroot = xpvbm; | |
1402 | ||
1403 | xpvbmend = &xpvbm[PERL_ARENA_SIZE / sizeof(XPVBM) - 1]; | |
1404 | PL_xpvbm_root = ++xpvbm; | |
1405 | while (xpvbm < xpvbmend) { | |
1406 | xpvbm->xpv_pv = (char*)(xpvbm + 1); | |
1407 | xpvbm++; | |
1408 | } | |
1409 | xpvbm->xpv_pv = 0; | |
463ee0b2 LW |
1410 | } |
1411 | ||
645c22ef DM |
1412 | /* grab a new struct xrv from the free list, allocating more if necessary */ |
1413 | ||
76e3520e | 1414 | STATIC XRV* |
cea2e8a9 | 1415 | S_new_xrv(pTHX) |
ed6116ce LW |
1416 | { |
1417 | XRV* xrv; | |
cbe51380 GS |
1418 | LOCK_SV_MUTEX; |
1419 | if (!PL_xrv_root) | |
cac9b346 | 1420 | S_more_xrv(aTHX); |
cbe51380 GS |
1421 | xrv = PL_xrv_root; |
1422 | PL_xrv_root = (XRV*)xrv->xrv_rv; | |
1423 | UNLOCK_SV_MUTEX; | |
1424 | return xrv; | |
ed6116ce LW |
1425 | } |
1426 | ||
645c22ef DM |
1427 | /* return a struct xrv to the free list */ |
1428 | ||
76e3520e | 1429 | STATIC void |
cea2e8a9 | 1430 | S_del_xrv(pTHX_ XRV *p) |
ed6116ce | 1431 | { |
cbe51380 | 1432 | LOCK_SV_MUTEX; |
3280af22 NIS |
1433 | p->xrv_rv = (SV*)PL_xrv_root; |
1434 | PL_xrv_root = p; | |
cbe51380 | 1435 | UNLOCK_SV_MUTEX; |
ed6116ce LW |
1436 | } |
1437 | ||
cac9b346 NC |
1438 | /* grab a new IV body from the free list, allocating more if necessary */ |
1439 | ||
1440 | STATIC XPVIV* | |
1441 | S_new_xiv(pTHX) | |
1442 | { | |
1443 | IV* xiv; | |
1444 | LOCK_SV_MUTEX; | |
1445 | if (!PL_xiv_root) | |
1446 | S_more_xiv(aTHX); | |
1447 | xiv = PL_xiv_root; | |
1448 | /* | |
1449 | * See comment in more_xiv() -- RAM. | |
1450 | */ | |
1451 | PL_xiv_root = *(IV**)xiv; | |
1452 | UNLOCK_SV_MUTEX; | |
1453 | return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv)); | |
1454 | } | |
1455 | ||
1456 | /* return an IV body to the free list */ | |
645c22ef | 1457 | |
cbe51380 | 1458 | STATIC void |
cac9b346 | 1459 | S_del_xiv(pTHX_ XPVIV *p) |
ed6116ce | 1460 | { |
cac9b346 NC |
1461 | IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv)); |
1462 | LOCK_SV_MUTEX; | |
1463 | *(IV**)xiv = PL_xiv_root; | |
1464 | PL_xiv_root = xiv; | |
1465 | UNLOCK_SV_MUTEX; | |
1466 | } | |
612f20c3 | 1467 | |
cac9b346 NC |
1468 | /* grab a new NV body from the free list, allocating more if necessary */ |
1469 | ||
1470 | STATIC XPVNV* | |
1471 | S_new_xnv(pTHX) | |
1472 | { | |
1473 | NV* xnv; | |
1474 | LOCK_SV_MUTEX; | |
1475 | if (!PL_xnv_root) | |
1476 | S_more_xnv(aTHX); | |
1477 | xnv = PL_xnv_root; | |
1478 | PL_xnv_root = *(NV**)xnv; | |
1479 | UNLOCK_SV_MUTEX; | |
1480 | return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv)); | |
1481 | } | |
1482 | ||
1483 | /* return an NV body to the free list */ | |
1484 | ||
1485 | STATIC void | |
1486 | S_del_xnv(pTHX_ XPVNV *p) | |
1487 | { | |
1488 | NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv)); | |
1489 | LOCK_SV_MUTEX; | |
1490 | *(NV**)xnv = PL_xnv_root; | |
1491 | PL_xnv_root = xnv; | |
1492 | UNLOCK_SV_MUTEX; | |
ed6116ce LW |
1493 | } |
1494 | ||
645c22ef DM |
1495 | /* grab a new struct xpv from the free list, allocating more if necessary */ |
1496 | ||
76e3520e | 1497 | STATIC XPV* |
cea2e8a9 | 1498 | S_new_xpv(pTHX) |
463ee0b2 LW |
1499 | { |
1500 | XPV* xpv; | |
cbe51380 GS |
1501 | LOCK_SV_MUTEX; |
1502 | if (!PL_xpv_root) | |
cac9b346 | 1503 | S_more_xpv(aTHX); |
cbe51380 GS |
1504 | xpv = PL_xpv_root; |
1505 | PL_xpv_root = (XPV*)xpv->xpv_pv; | |
1506 | UNLOCK_SV_MUTEX; | |
1507 | return xpv; | |
463ee0b2 LW |
1508 | } |
1509 | ||
645c22ef DM |
1510 | /* return a struct xpv to the free list */ |
1511 | ||
76e3520e | 1512 | STATIC void |
cea2e8a9 | 1513 | S_del_xpv(pTHX_ XPV *p) |
463ee0b2 | 1514 | { |
cbe51380 | 1515 | LOCK_SV_MUTEX; |
3280af22 NIS |
1516 | p->xpv_pv = (char*)PL_xpv_root; |
1517 | PL_xpv_root = p; | |
cbe51380 | 1518 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
1519 | } |
1520 | ||
645c22ef DM |
1521 | /* grab a new struct xpviv from the free list, allocating more if necessary */ |
1522 | ||
932e9ff9 VB |
1523 | STATIC XPVIV* |
1524 | S_new_xpviv(pTHX) | |
1525 | { | |
1526 | XPVIV* xpviv; | |
1527 | LOCK_SV_MUTEX; | |
1528 | if (!PL_xpviv_root) | |
cac9b346 | 1529 | S_more_xpviv(aTHX); |
932e9ff9 VB |
1530 | xpviv = PL_xpviv_root; |
1531 | PL_xpviv_root = (XPVIV*)xpviv->xpv_pv; | |
1532 | UNLOCK_SV_MUTEX; | |
1533 | return xpviv; | |
1534 | } | |
1535 | ||
645c22ef DM |
1536 | /* return a struct xpviv to the free list */ |
1537 | ||
932e9ff9 VB |
1538 | STATIC void |
1539 | S_del_xpviv(pTHX_ XPVIV *p) | |
1540 | { | |
1541 | LOCK_SV_MUTEX; | |
1542 | p->xpv_pv = (char*)PL_xpviv_root; | |
1543 | PL_xpviv_root = p; | |
1544 | UNLOCK_SV_MUTEX; | |
1545 | } | |
1546 | ||
645c22ef DM |
1547 | /* grab a new struct xpvnv from the free list, allocating more if necessary */ |
1548 | ||
932e9ff9 VB |
1549 | STATIC XPVNV* |
1550 | S_new_xpvnv(pTHX) | |
1551 | { | |
1552 | XPVNV* xpvnv; | |
1553 | LOCK_SV_MUTEX; | |
1554 | if (!PL_xpvnv_root) | |
cac9b346 | 1555 | S_more_xpvnv(aTHX); |
932e9ff9 VB |
1556 | xpvnv = PL_xpvnv_root; |
1557 | PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv; | |
1558 | UNLOCK_SV_MUTEX; | |
1559 | return xpvnv; | |
1560 | } | |
1561 | ||
645c22ef DM |
1562 | /* return a struct xpvnv to the free list */ |
1563 | ||
932e9ff9 VB |
1564 | STATIC void |
1565 | S_del_xpvnv(pTHX_ XPVNV *p) | |
1566 | { | |
1567 | LOCK_SV_MUTEX; | |
1568 | p->xpv_pv = (char*)PL_xpvnv_root; | |
1569 | PL_xpvnv_root = p; | |
1570 | UNLOCK_SV_MUTEX; | |
1571 | } | |
1572 | ||
645c22ef DM |
1573 | /* grab a new struct xpvcv from the free list, allocating more if necessary */ |
1574 | ||
932e9ff9 VB |
1575 | STATIC XPVCV* |
1576 | S_new_xpvcv(pTHX) | |
1577 | { | |
1578 | XPVCV* xpvcv; | |
1579 | LOCK_SV_MUTEX; | |
1580 | if (!PL_xpvcv_root) | |
cac9b346 | 1581 | S_more_xpvcv(aTHX); |
932e9ff9 VB |
1582 | xpvcv = PL_xpvcv_root; |
1583 | PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv; | |
1584 | UNLOCK_SV_MUTEX; | |
1585 | return xpvcv; | |
1586 | } | |
1587 | ||
645c22ef DM |
1588 | /* return a struct xpvcv to the free list */ |
1589 | ||
932e9ff9 VB |
1590 | STATIC void |
1591 | S_del_xpvcv(pTHX_ XPVCV *p) | |
1592 | { | |
1593 | LOCK_SV_MUTEX; | |
1594 | p->xpv_pv = (char*)PL_xpvcv_root; | |
1595 | PL_xpvcv_root = p; | |
1596 | UNLOCK_SV_MUTEX; | |
1597 | } | |
1598 | ||
645c22ef DM |
1599 | /* grab a new struct xpvav from the free list, allocating more if necessary */ |
1600 | ||
932e9ff9 VB |
1601 | STATIC XPVAV* |
1602 | S_new_xpvav(pTHX) | |
1603 | { | |
1604 | XPVAV* xpvav; | |
1605 | LOCK_SV_MUTEX; | |
1606 | if (!PL_xpvav_root) | |
cac9b346 | 1607 | S_more_xpvav(aTHX); |
932e9ff9 VB |
1608 | xpvav = PL_xpvav_root; |
1609 | PL_xpvav_root = (XPVAV*)xpvav->xav_array; | |
1610 | UNLOCK_SV_MUTEX; | |
1611 | return xpvav; | |
1612 | } | |
1613 | ||
645c22ef DM |
1614 | /* return a struct xpvav to the free list */ |
1615 | ||
932e9ff9 VB |
1616 | STATIC void |
1617 | S_del_xpvav(pTHX_ XPVAV *p) | |
1618 | { | |
1619 | LOCK_SV_MUTEX; | |
1620 | p->xav_array = (char*)PL_xpvav_root; | |
1621 | PL_xpvav_root = p; | |
1622 | UNLOCK_SV_MUTEX; | |
1623 | } | |
1624 | ||
645c22ef DM |
1625 | /* grab a new struct xpvhv from the free list, allocating more if necessary */ |
1626 | ||
932e9ff9 VB |
1627 | STATIC XPVHV* |
1628 | S_new_xpvhv(pTHX) | |
1629 | { | |
1630 | XPVHV* xpvhv; | |
1631 | LOCK_SV_MUTEX; | |
1632 | if (!PL_xpvhv_root) | |
cac9b346 | 1633 | S_more_xpvhv(aTHX); |
932e9ff9 VB |
1634 | xpvhv = PL_xpvhv_root; |
1635 | PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array; | |
1636 | UNLOCK_SV_MUTEX; | |
1637 | return xpvhv; | |
1638 | } | |
1639 | ||
645c22ef DM |
1640 | /* return a struct xpvhv to the free list */ |
1641 | ||
932e9ff9 VB |
1642 | STATIC void |
1643 | S_del_xpvhv(pTHX_ XPVHV *p) | |
1644 | { | |
1645 | LOCK_SV_MUTEX; | |
1646 | p->xhv_array = (char*)PL_xpvhv_root; | |
1647 | PL_xpvhv_root = p; | |
1648 | UNLOCK_SV_MUTEX; | |
1649 | } | |
1650 | ||
645c22ef DM |
1651 | /* grab a new struct xpvmg from the free list, allocating more if necessary */ |
1652 | ||
932e9ff9 VB |
1653 | STATIC XPVMG* |
1654 | S_new_xpvmg(pTHX) | |
1655 | { | |
1656 | XPVMG* xpvmg; | |
1657 | LOCK_SV_MUTEX; | |
1658 | if (!PL_xpvmg_root) | |
cac9b346 | 1659 | S_more_xpvmg(aTHX); |
932e9ff9 VB |
1660 | xpvmg = PL_xpvmg_root; |
1661 | PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv; | |
1662 | UNLOCK_SV_MUTEX; | |
1663 | return xpvmg; | |
1664 | } | |
1665 | ||
645c22ef DM |
1666 | /* return a struct xpvmg to the free list */ |
1667 | ||
932e9ff9 VB |
1668 | STATIC void |
1669 | S_del_xpvmg(pTHX_ XPVMG *p) | |
1670 | { | |
1671 | LOCK_SV_MUTEX; | |
1672 | p->xpv_pv = (char*)PL_xpvmg_root; | |
1673 | PL_xpvmg_root = p; | |
1674 | UNLOCK_SV_MUTEX; | |
1675 | } | |
1676 | ||
727879eb NC |
1677 | /* grab a new struct xpvgv from the free list, allocating more if necessary */ |
1678 | ||
1679 | STATIC XPVGV* | |
1680 | S_new_xpvgv(pTHX) | |
1681 | { | |
1682 | XPVGV* xpvgv; | |
1683 | LOCK_SV_MUTEX; | |
1684 | if (!PL_xpvgv_root) | |
cac9b346 | 1685 | S_more_xpvgv(aTHX); |
727879eb NC |
1686 | xpvgv = PL_xpvgv_root; |
1687 | PL_xpvgv_root = (XPVGV*)xpvgv->xpv_pv; | |
1688 | UNLOCK_SV_MUTEX; | |
1689 | return xpvgv; | |
1690 | } | |
1691 | ||
1692 | /* return a struct xpvgv to the free list */ | |
1693 | ||
1694 | STATIC void | |
1695 | S_del_xpvgv(pTHX_ XPVGV *p) | |
1696 | { | |
1697 | LOCK_SV_MUTEX; | |
1698 | p->xpv_pv = (char*)PL_xpvgv_root; | |
1699 | PL_xpvgv_root = p; | |
1700 | UNLOCK_SV_MUTEX; | |
1701 | } | |
1702 | ||
645c22ef DM |
1703 | /* grab a new struct xpvlv from the free list, allocating more if necessary */ |
1704 | ||
932e9ff9 VB |
1705 | STATIC XPVLV* |
1706 | S_new_xpvlv(pTHX) | |
1707 | { | |
1708 | XPVLV* xpvlv; | |
1709 | LOCK_SV_MUTEX; | |
1710 | if (!PL_xpvlv_root) | |
cac9b346 | 1711 | S_more_xpvlv(aTHX); |
932e9ff9 VB |
1712 | xpvlv = PL_xpvlv_root; |
1713 | PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv; | |
1714 | UNLOCK_SV_MUTEX; | |
1715 | return xpvlv; | |
1716 | } | |
1717 | ||
645c22ef DM |
1718 | /* return a struct xpvlv to the free list */ |
1719 | ||
932e9ff9 VB |
1720 | STATIC void |
1721 | S_del_xpvlv(pTHX_ XPVLV *p) | |
1722 | { | |
1723 | LOCK_SV_MUTEX; | |
1724 | p->xpv_pv = (char*)PL_xpvlv_root; | |
1725 | PL_xpvlv_root = p; | |
1726 | UNLOCK_SV_MUTEX; | |
1727 | } | |
1728 | ||
645c22ef DM |
1729 | /* grab a new struct xpvbm from the free list, allocating more if necessary */ |
1730 | ||
932e9ff9 VB |
1731 | STATIC XPVBM* |
1732 | S_new_xpvbm(pTHX) | |
1733 | { | |
1734 | XPVBM* xpvbm; | |
1735 | LOCK_SV_MUTEX; | |
1736 | if (!PL_xpvbm_root) | |
cac9b346 | 1737 | S_more_xpvbm(aTHX); |
932e9ff9 VB |
1738 | xpvbm = PL_xpvbm_root; |
1739 | PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv; | |
1740 | UNLOCK_SV_MUTEX; | |
1741 | return xpvbm; | |
1742 | } | |
1743 | ||
645c22ef DM |
1744 | /* return a struct xpvbm to the free list */ |
1745 | ||
932e9ff9 VB |
1746 | STATIC void |
1747 | S_del_xpvbm(pTHX_ XPVBM *p) | |
1748 | { | |
1749 | LOCK_SV_MUTEX; | |
1750 | p->xpv_pv = (char*)PL_xpvbm_root; | |
1751 | PL_xpvbm_root = p; | |
1752 | UNLOCK_SV_MUTEX; | |
1753 | } | |
1754 | ||
7bab3ede MB |
1755 | #define my_safemalloc(s) (void*)safemalloc(s) |
1756 | #define my_safefree(p) safefree((char*)p) | |
463ee0b2 | 1757 | |
d33b2eba | 1758 | #ifdef PURIFY |
463ee0b2 | 1759 | |
d33b2eba GS |
1760 | #define new_XIV() my_safemalloc(sizeof(XPVIV)) |
1761 | #define del_XIV(p) my_safefree(p) | |
ed6116ce | 1762 | |
d33b2eba GS |
1763 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
1764 | #define del_XNV(p) my_safefree(p) | |
463ee0b2 | 1765 | |
d33b2eba GS |
1766 | #define new_XRV() my_safemalloc(sizeof(XRV)) |
1767 | #define del_XRV(p) my_safefree(p) | |
8c52afec | 1768 | |
d33b2eba GS |
1769 | #define new_XPV() my_safemalloc(sizeof(XPV)) |
1770 | #define del_XPV(p) my_safefree(p) | |
9b94d1dd | 1771 | |
d33b2eba GS |
1772 | #define new_XPVIV() my_safemalloc(sizeof(XPVIV)) |
1773 | #define del_XPVIV(p) my_safefree(p) | |
932e9ff9 | 1774 | |
d33b2eba GS |
1775 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
1776 | #define del_XPVNV(p) my_safefree(p) | |
932e9ff9 | 1777 | |
d33b2eba GS |
1778 | #define new_XPVCV() my_safemalloc(sizeof(XPVCV)) |
1779 | #define del_XPVCV(p) my_safefree(p) | |
932e9ff9 | 1780 | |
d33b2eba GS |
1781 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1782 | #define del_XPVAV(p) my_safefree(p) | |
1783 | ||
1784 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) | |
1785 | #define del_XPVHV(p) my_safefree(p) | |
1c846c1f | 1786 | |
d33b2eba GS |
1787 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1788 | #define del_XPVMG(p) my_safefree(p) | |
1789 | ||
727879eb NC |
1790 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1791 | #define del_XPVGV(p) my_safefree(p) | |
1792 | ||
d33b2eba GS |
1793 | #define new_XPVLV() my_safemalloc(sizeof(XPVLV)) |
1794 | #define del_XPVLV(p) my_safefree(p) | |
1795 | ||
1796 | #define new_XPVBM() my_safemalloc(sizeof(XPVBM)) | |
1797 | #define del_XPVBM(p) my_safefree(p) | |
1798 | ||
1799 | #else /* !PURIFY */ | |
1800 | ||
1801 | #define new_XIV() (void*)new_xiv() | |
1802 | #define del_XIV(p) del_xiv((XPVIV*) p) | |
1803 | ||
1804 | #define new_XNV() (void*)new_xnv() | |
1805 | #define del_XNV(p) del_xnv((XPVNV*) p) | |
9b94d1dd | 1806 | |
d33b2eba GS |
1807 | #define new_XRV() (void*)new_xrv() |
1808 | #define del_XRV(p) del_xrv((XRV*) p) | |
9b94d1dd | 1809 | |
d33b2eba GS |
1810 | #define new_XPV() (void*)new_xpv() |
1811 | #define del_XPV(p) del_xpv((XPV *)p) | |
1812 | ||
1813 | #define new_XPVIV() (void*)new_xpviv() | |
1814 | #define del_XPVIV(p) del_xpviv((XPVIV *)p) | |
1815 | ||
1816 | #define new_XPVNV() (void*)new_xpvnv() | |
1817 | #define del_XPVNV(p) del_xpvnv((XPVNV *)p) | |
1818 | ||
1819 | #define new_XPVCV() (void*)new_xpvcv() | |
1820 | #define del_XPVCV(p) del_xpvcv((XPVCV *)p) | |
1821 | ||
1822 | #define new_XPVAV() (void*)new_xpvav() | |
1823 | #define del_XPVAV(p) del_xpvav((XPVAV *)p) | |
1824 | ||
1825 | #define new_XPVHV() (void*)new_xpvhv() | |
1826 | #define del_XPVHV(p) del_xpvhv((XPVHV *)p) | |
1c846c1f | 1827 | |
d33b2eba GS |
1828 | #define new_XPVMG() (void*)new_xpvmg() |
1829 | #define del_XPVMG(p) del_xpvmg((XPVMG *)p) | |
1830 | ||
727879eb NC |
1831 | #define new_XPVGV() (void*)new_xpvgv() |
1832 | #define del_XPVGV(p) del_xpvgv((XPVGV *)p) | |
1833 | ||
d33b2eba GS |
1834 | #define new_XPVLV() (void*)new_xpvlv() |
1835 | #define del_XPVLV(p) del_xpvlv((XPVLV *)p) | |
1836 | ||
1837 | #define new_XPVBM() (void*)new_xpvbm() | |
1838 | #define del_XPVBM(p) del_xpvbm((XPVBM *)p) | |
1839 | ||
1840 | #endif /* PURIFY */ | |
9b94d1dd | 1841 | |
d33b2eba GS |
1842 | #define new_XPVFM() my_safemalloc(sizeof(XPVFM)) |
1843 | #define del_XPVFM(p) my_safefree(p) | |
1c846c1f | 1844 | |
d33b2eba GS |
1845 | #define new_XPVIO() my_safemalloc(sizeof(XPVIO)) |
1846 | #define del_XPVIO(p) my_safefree(p) | |
8990e307 | 1847 | |
954c1994 GS |
1848 | /* |
1849 | =for apidoc sv_upgrade | |
1850 | ||
ff276b08 | 1851 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 1852 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 1853 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
1854 | |
1855 | =cut | |
1856 | */ | |
1857 | ||
79072805 | 1858 | bool |
864dbfa3 | 1859 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt) |
79072805 | 1860 | { |
e763e3dc | 1861 | |
d2e56290 NC |
1862 | char* pv; |
1863 | U32 cur; | |
1864 | U32 len; | |
1865 | IV iv; | |
1866 | NV nv; | |
1867 | MAGIC* magic; | |
1868 | HV* stash; | |
79072805 | 1869 | |
765f542d NC |
1870 | if (mt != SVt_PV && SvIsCOW(sv)) { |
1871 | sv_force_normal_flags(sv, 0); | |
f130fd45 NIS |
1872 | } |
1873 | ||
79072805 LW |
1874 | if (SvTYPE(sv) == mt) |
1875 | return TRUE; | |
1876 | ||
d2e56290 NC |
1877 | pv = NULL; |
1878 | cur = 0; | |
1879 | len = 0; | |
1880 | iv = 0; | |
1881 | nv = 0.0; | |
1882 | magic = NULL; | |
1883 | stash = Nullhv; | |
1884 | ||
79072805 LW |
1885 | switch (SvTYPE(sv)) { |
1886 | case SVt_NULL: | |
79072805 | 1887 | break; |
79072805 | 1888 | case SVt_IV: |
463ee0b2 | 1889 | iv = SvIVX(sv); |
79072805 | 1890 | del_XIV(SvANY(sv)); |
ed6116ce | 1891 | if (mt == SVt_NV) |
463ee0b2 | 1892 | mt = SVt_PVNV; |
ed6116ce LW |
1893 | else if (mt < SVt_PVIV) |
1894 | mt = SVt_PVIV; | |
79072805 LW |
1895 | break; |
1896 | case SVt_NV: | |
463ee0b2 | 1897 | nv = SvNVX(sv); |
79072805 | 1898 | del_XNV(SvANY(sv)); |
ed6116ce | 1899 | if (mt < SVt_PVNV) |
79072805 LW |
1900 | mt = SVt_PVNV; |
1901 | break; | |
ed6116ce LW |
1902 | case SVt_RV: |
1903 | pv = (char*)SvRV(sv); | |
ed6116ce | 1904 | del_XRV(SvANY(sv)); |
ed6116ce | 1905 | break; |
79072805 | 1906 | case SVt_PV: |
463ee0b2 | 1907 | pv = SvPVX(sv); |
79072805 LW |
1908 | cur = SvCUR(sv); |
1909 | len = SvLEN(sv); | |
79072805 | 1910 | del_XPV(SvANY(sv)); |
748a9306 LW |
1911 | if (mt <= SVt_IV) |
1912 | mt = SVt_PVIV; | |
1913 | else if (mt == SVt_NV) | |
1914 | mt = SVt_PVNV; | |
79072805 LW |
1915 | break; |
1916 | case SVt_PVIV: | |
463ee0b2 | 1917 | pv = SvPVX(sv); |
79072805 LW |
1918 | cur = SvCUR(sv); |
1919 | len = SvLEN(sv); | |
463ee0b2 | 1920 | iv = SvIVX(sv); |
79072805 LW |
1921 | del_XPVIV(SvANY(sv)); |
1922 | break; | |
1923 | case SVt_PVNV: | |
463ee0b2 | 1924 | pv = SvPVX(sv); |
79072805 LW |
1925 | cur = SvCUR(sv); |
1926 | len = SvLEN(sv); | |
463ee0b2 LW |
1927 | iv = SvIVX(sv); |
1928 | nv = SvNVX(sv); | |
79072805 LW |
1929 | del_XPVNV(SvANY(sv)); |
1930 | break; | |
1931 | case SVt_PVMG: | |
0ec50a73 NC |
1932 | /* Because the XPVMG of PL_mess_sv isn't allocated from the arena, |
1933 | there's no way that it can be safely upgraded, because perl.c | |
1934 | expects to Safefree(SvANY(PL_mess_sv)) */ | |
1935 | assert(sv != PL_mess_sv); | |
bce8f412 NC |
1936 | /* This flag bit is used to mean other things in other scalar types. |
1937 | Given that it only has meaning inside the pad, it shouldn't be set | |
1938 | on anything that can get upgraded. */ | |
1939 | assert((SvFLAGS(sv) & SVpad_TYPED) == 0); | |
463ee0b2 | 1940 | pv = SvPVX(sv); |
79072805 LW |
1941 | cur = SvCUR(sv); |
1942 | len = SvLEN(sv); | |
463ee0b2 LW |
1943 | iv = SvIVX(sv); |
1944 | nv = SvNVX(sv); | |
79072805 LW |
1945 | magic = SvMAGIC(sv); |
1946 | stash = SvSTASH(sv); | |
1947 | del_XPVMG(SvANY(sv)); | |
1948 | break; | |
1949 | default: | |
cea2e8a9 | 1950 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); |
79072805 LW |
1951 | } |
1952 | ||
ffb05e06 NC |
1953 | SvFLAGS(sv) &= ~SVTYPEMASK; |
1954 | SvFLAGS(sv) |= mt; | |
1955 | ||
79072805 LW |
1956 | switch (mt) { |
1957 | case SVt_NULL: | |
cea2e8a9 | 1958 | Perl_croak(aTHX_ "Can't upgrade to undef"); |
79072805 LW |
1959 | case SVt_IV: |
1960 | SvANY(sv) = new_XIV(); | |
45977657 | 1961 | SvIV_set(sv, iv); |
79072805 LW |
1962 | break; |
1963 | case SVt_NV: | |
1964 | SvANY(sv) = new_XNV(); | |
9d6ce603 | 1965 | SvNV_set(sv, nv); |
79072805 | 1966 | break; |
ed6116ce LW |
1967 | case SVt_RV: |
1968 | SvANY(sv) = new_XRV(); | |
b162af07 | 1969 | SvRV_set(sv, (SV*)pv); |
ed6116ce | 1970 | break; |
79072805 LW |
1971 | case SVt_PVHV: |
1972 | SvANY(sv) = new_XPVHV(); | |
bd4b1eb5 NC |
1973 | HvRITER(sv) = 0; |
1974 | HvEITER(sv) = 0; | |
1975 | HvPMROOT(sv) = 0; | |
1976 | HvNAME(sv) = 0; | |
463ee0b2 LW |
1977 | HvFILL(sv) = 0; |
1978 | HvMAX(sv) = 0; | |
8aacddc1 NIS |
1979 | HvTOTALKEYS(sv) = 0; |
1980 | HvPLACEHOLDERS(sv) = 0; | |
bd4b1eb5 NC |
1981 | |
1982 | /* Fall through... */ | |
1983 | if (0) { | |
1984 | case SVt_PVAV: | |
1985 | SvANY(sv) = new_XPVAV(); | |
1986 | AvMAX(sv) = -1; | |
1987 | AvFILLp(sv) = -1; | |
1988 | AvALLOC(sv) = 0; | |
1989 | AvARYLEN(sv)= 0; | |
11ca45c0 | 1990 | AvREAL_only(sv); |
bd4b1eb5 NC |
1991 | SvIV_set(sv, 0); |
1992 | SvNV_set(sv, 0.0); | |
1993 | } | |
1994 | /* to here. */ | |
c2bfdfaf NC |
1995 | /* XXX? Only SVt_NULL is ever upgraded to AV or HV? */ |
1996 | assert(!pv); | |
8bd4d4c5 NC |
1997 | /* FIXME. Should be able to remove all this if()... if the above |
1998 | assertion is genuinely always true. */ | |
1999 | if(SvOOK(sv)) { | |
2000 | pv -= iv; | |
2001 | SvFLAGS(sv) &= ~SVf_OOK; | |
2002 | } | |
2003 | Safefree(pv); | |
bd4b1eb5 | 2004 | SvPV_set(sv, (char*)0); |
b162af07 SP |
2005 | SvMAGIC_set(sv, magic); |
2006 | SvSTASH_set(sv, stash); | |
79072805 | 2007 | break; |
bd4b1eb5 NC |
2008 | |
2009 | case SVt_PVIO: | |
2010 | SvANY(sv) = new_XPVIO(); | |
2011 | Zero(SvANY(sv), 1, XPVIO); | |
2012 | IoPAGE_LEN(sv) = 60; | |
2013 | goto set_magic_common; | |
2014 | case SVt_PVFM: | |
2015 | SvANY(sv) = new_XPVFM(); | |
2016 | Zero(SvANY(sv), 1, XPVFM); | |
2017 | goto set_magic_common; | |
2018 | case SVt_PVBM: | |
2019 | SvANY(sv) = new_XPVBM(); | |
2020 | BmRARE(sv) = 0; | |
2021 | BmUSEFUL(sv) = 0; | |
2022 | BmPREVIOUS(sv) = 0; | |
2023 | goto set_magic_common; | |
2024 | case SVt_PVGV: | |
2025 | SvANY(sv) = new_XPVGV(); | |
2026 | GvGP(sv) = 0; | |
2027 | GvNAME(sv) = 0; | |
2028 | GvNAMELEN(sv) = 0; | |
2029 | GvSTASH(sv) = 0; | |
2030 | GvFLAGS(sv) = 0; | |
2031 | goto set_magic_common; | |
79072805 LW |
2032 | case SVt_PVCV: |
2033 | SvANY(sv) = new_XPVCV(); | |
748a9306 | 2034 | Zero(SvANY(sv), 1, XPVCV); |
bd4b1eb5 NC |
2035 | goto set_magic_common; |
2036 | case SVt_PVLV: | |
2037 | SvANY(sv) = new_XPVLV(); | |
2038 | LvTARGOFF(sv) = 0; | |
2039 | LvTARGLEN(sv) = 0; | |
2040 | LvTARG(sv) = 0; | |
2041 | LvTYPE(sv) = 0; | |
93a17b20 | 2042 | GvGP(sv) = 0; |
79072805 LW |
2043 | GvNAME(sv) = 0; |
2044 | GvNAMELEN(sv) = 0; | |
2045 | GvSTASH(sv) = 0; | |
a5f75d66 | 2046 | GvFLAGS(sv) = 0; |
bd4b1eb5 NC |
2047 | /* Fall through. */ |
2048 | if (0) { | |
2049 | case SVt_PVMG: | |
2050 | SvANY(sv) = new_XPVMG(); | |
2051 | } | |
2052 | set_magic_common: | |
b162af07 SP |
2053 | SvMAGIC_set(sv, magic); |
2054 | SvSTASH_set(sv, stash); | |
bd4b1eb5 NC |
2055 | /* Fall through. */ |
2056 | if (0) { | |
2057 | case SVt_PVNV: | |
2058 | SvANY(sv) = new_XPVNV(); | |
2059 | } | |
9d6ce603 | 2060 | SvNV_set(sv, nv); |
bd4b1eb5 NC |
2061 | /* Fall through. */ |
2062 | if (0) { | |
2063 | case SVt_PVIV: | |
2064 | SvANY(sv) = new_XPVIV(); | |
2065 | if (SvNIOK(sv)) | |
2066 | (void)SvIOK_on(sv); | |
2067 | SvNOK_off(sv); | |
2068 | } | |
2069 | SvIV_set(sv, iv); | |
2070 | /* Fall through. */ | |
2071 | if (0) { | |
2072 | case SVt_PV: | |
2073 | SvANY(sv) = new_XPV(); | |
2074 | } | |
f880fe2f | 2075 | SvPV_set(sv, pv); |
b162af07 SP |
2076 | SvCUR_set(sv, cur); |
2077 | SvLEN_set(sv, len); | |
8990e307 LW |
2078 | break; |
2079 | } | |
79072805 LW |
2080 | return TRUE; |
2081 | } | |
2082 | ||
645c22ef DM |
2083 | /* |
2084 | =for apidoc sv_backoff | |
2085 | ||
2086 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
2087 | wrapper instead. | |
2088 | ||
2089 | =cut | |
2090 | */ | |
2091 | ||
79072805 | 2092 | int |
864dbfa3 | 2093 | Perl_sv_backoff(pTHX_ register SV *sv) |
79072805 LW |
2094 | { |
2095 | assert(SvOOK(sv)); | |
463ee0b2 LW |
2096 | if (SvIVX(sv)) { |
2097 | char *s = SvPVX(sv); | |
b162af07 | 2098 | SvLEN_set(sv, SvLEN(sv) + SvIVX(sv)); |
f880fe2f | 2099 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); |
79072805 | 2100 | SvIV_set(sv, 0); |
463ee0b2 | 2101 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
79072805 LW |
2102 | } |
2103 | SvFLAGS(sv) &= ~SVf_OOK; | |
a0d0e21e | 2104 | return 0; |
79072805 LW |
2105 | } |
2106 | ||
954c1994 GS |
2107 | /* |
2108 | =for apidoc sv_grow | |
2109 | ||
645c22ef DM |
2110 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
2111 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
2112 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
2113 | |
2114 | =cut | |
2115 | */ | |
2116 | ||
79072805 | 2117 | char * |
864dbfa3 | 2118 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) |
79072805 LW |
2119 | { |
2120 | register char *s; | |
2121 | ||
55497cff | 2122 | #ifdef HAS_64K_LIMIT |
79072805 | 2123 | if (newlen >= 0x10000) { |
1d7c1841 GS |
2124 | PerlIO_printf(Perl_debug_log, |
2125 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
79072805 LW |
2126 | my_exit(1); |
2127 | } | |
55497cff | 2128 | #endif /* HAS_64K_LIMIT */ |
a0d0e21e LW |
2129 | if (SvROK(sv)) |
2130 | sv_unref(sv); | |
79072805 LW |
2131 | if (SvTYPE(sv) < SVt_PV) { |
2132 | sv_upgrade(sv, SVt_PV); | |
463ee0b2 | 2133 | s = SvPVX(sv); |
79072805 LW |
2134 | } |
2135 | else if (SvOOK(sv)) { /* pv is offset? */ | |
2136 | sv_backoff(sv); | |
463ee0b2 | 2137 | s = SvPVX(sv); |
79072805 LW |
2138 | if (newlen > SvLEN(sv)) |
2139 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
c6f8c383 GA |
2140 | #ifdef HAS_64K_LIMIT |
2141 | if (newlen >= 0x10000) | |
2142 | newlen = 0xFFFF; | |
2143 | #endif | |
79072805 | 2144 | } |
bc44a8a2 | 2145 | else |
463ee0b2 | 2146 | s = SvPVX(sv); |
54f0641b | 2147 | |
79072805 | 2148 | if (newlen > SvLEN(sv)) { /* need more room? */ |
8d6dde3e | 2149 | if (SvLEN(sv) && s) { |
7bab3ede | 2150 | #ifdef MYMALLOC |
a3b680e6 | 2151 | const STRLEN l = malloced_size((void*)SvPVX(sv)); |
8d6dde3e IZ |
2152 | if (newlen <= l) { |
2153 | SvLEN_set(sv, l); | |
2154 | return s; | |
2155 | } else | |
c70c8a0a | 2156 | #endif |
79072805 | 2157 | Renew(s,newlen,char); |
8d6dde3e | 2158 | } |
bfed75c6 | 2159 | else { |
4e83176d | 2160 | New(703, s, newlen, char); |
40565179 | 2161 | if (SvPVX(sv) && SvCUR(sv)) { |
54f0641b | 2162 | Move(SvPVX(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); |
40565179 | 2163 | } |
4e83176d | 2164 | } |
79072805 | 2165 | SvPV_set(sv, s); |
e1ec3a88 | 2166 | SvLEN_set(sv, newlen); |
79072805 LW |
2167 | } |
2168 | return s; | |
2169 | } | |
2170 | ||
954c1994 GS |
2171 | /* |
2172 | =for apidoc sv_setiv | |
2173 | ||
645c22ef DM |
2174 | Copies an integer into the given SV, upgrading first if necessary. |
2175 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
2176 | |
2177 | =cut | |
2178 | */ | |
2179 | ||
79072805 | 2180 | void |
864dbfa3 | 2181 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) |
79072805 | 2182 | { |
765f542d | 2183 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 LW |
2184 | switch (SvTYPE(sv)) { |
2185 | case SVt_NULL: | |
79072805 | 2186 | sv_upgrade(sv, SVt_IV); |
463ee0b2 LW |
2187 | break; |
2188 | case SVt_NV: | |
2189 | sv_upgrade(sv, SVt_PVNV); | |
2190 | break; | |
ed6116ce | 2191 | case SVt_RV: |
463ee0b2 | 2192 | case SVt_PV: |
79072805 | 2193 | sv_upgrade(sv, SVt_PVIV); |
463ee0b2 | 2194 | break; |
a0d0e21e LW |
2195 | |
2196 | case SVt_PVGV: | |
a0d0e21e LW |
2197 | case SVt_PVAV: |
2198 | case SVt_PVHV: | |
2199 | case SVt_PVCV: | |
2200 | case SVt_PVFM: | |
2201 | case SVt_PVIO: | |
411caa50 | 2202 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), |
53e06cf0 | 2203 | OP_DESC(PL_op)); |
463ee0b2 | 2204 | } |
a0d0e21e | 2205 | (void)SvIOK_only(sv); /* validate number */ |
45977657 | 2206 | SvIV_set(sv, i); |
463ee0b2 | 2207 | SvTAINT(sv); |
79072805 LW |
2208 | } |
2209 | ||
954c1994 GS |
2210 | /* |
2211 | =for apidoc sv_setiv_mg | |
2212 | ||
2213 | Like C<sv_setiv>, but also handles 'set' magic. | |
2214 | ||
2215 | =cut | |
2216 | */ | |
2217 | ||
79072805 | 2218 | void |
864dbfa3 | 2219 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) |
ef50df4b GS |
2220 | { |
2221 | sv_setiv(sv,i); | |
2222 | SvSETMAGIC(sv); | |
2223 | } | |
2224 | ||
954c1994 GS |
2225 | /* |
2226 | =for apidoc sv_setuv | |
2227 | ||
645c22ef DM |
2228 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
2229 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
2230 | |
2231 | =cut | |
2232 | */ | |
2233 | ||
ef50df4b | 2234 | void |
864dbfa3 | 2235 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) |
55497cff | 2236 | { |
55ada374 NC |
2237 | /* With these two if statements: |
2238 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 2239 | |
55ada374 NC |
2240 | without |
2241 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 2242 | |
55ada374 NC |
2243 | If you wish to remove them, please benchmark to see what the effect is |
2244 | */ | |
28e5dec8 JH |
2245 | if (u <= (UV)IV_MAX) { |
2246 | sv_setiv(sv, (IV)u); | |
2247 | return; | |
2248 | } | |
25da4f38 IZ |
2249 | sv_setiv(sv, 0); |
2250 | SvIsUV_on(sv); | |
607fa7f2 | 2251 | SvUV_set(sv, u); |
55497cff | 2252 | } |
2253 | ||
954c1994 GS |
2254 | /* |
2255 | =for apidoc sv_setuv_mg | |
2256 | ||
2257 | Like C<sv_setuv>, but also handles 'set' magic. | |
2258 | ||
2259 | =cut | |
2260 | */ | |
2261 | ||
55497cff | 2262 | void |
864dbfa3 | 2263 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) |
ef50df4b | 2264 | { |
55ada374 NC |
2265 | /* With these two if statements: |
2266 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 2267 | |
55ada374 NC |
2268 | without |
2269 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 2270 | |
55ada374 NC |
2271 | If you wish to remove them, please benchmark to see what the effect is |
2272 | */ | |
28e5dec8 JH |
2273 | if (u <= (UV)IV_MAX) { |
2274 | sv_setiv(sv, (IV)u); | |
2275 | } else { | |
2276 | sv_setiv(sv, 0); | |
2277 | SvIsUV_on(sv); | |
2278 | sv_setuv(sv,u); | |
2279 | } | |
ef50df4b GS |
2280 | SvSETMAGIC(sv); |
2281 | } | |
2282 | ||
954c1994 GS |
2283 | /* |
2284 | =for apidoc sv_setnv | |
2285 | ||
645c22ef DM |
2286 | Copies a double into the given SV, upgrading first if necessary. |
2287 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
2288 | |
2289 | =cut | |
2290 | */ | |
2291 | ||
ef50df4b | 2292 | void |
65202027 | 2293 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 2294 | { |
765f542d | 2295 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
a0d0e21e LW |
2296 | switch (SvTYPE(sv)) { |
2297 | case SVt_NULL: | |
2298 | case SVt_IV: | |
79072805 | 2299 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2300 | break; |
a0d0e21e LW |
2301 | case SVt_RV: |
2302 | case SVt_PV: | |
2303 | case SVt_PVIV: | |
79072805 | 2304 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e | 2305 | break; |
827b7e14 | 2306 | |
a0d0e21e | 2307 | case SVt_PVGV: |
a0d0e21e LW |
2308 | case SVt_PVAV: |
2309 | case SVt_PVHV: | |
2310 | case SVt_PVCV: | |
2311 | case SVt_PVFM: | |
2312 | case SVt_PVIO: | |
411caa50 | 2313 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), |
53e06cf0 | 2314 | OP_NAME(PL_op)); |
79072805 | 2315 | } |
9d6ce603 | 2316 | SvNV_set(sv, num); |
a0d0e21e | 2317 | (void)SvNOK_only(sv); /* validate number */ |
463ee0b2 | 2318 | SvTAINT(sv); |
79072805 LW |
2319 | } |
2320 | ||
954c1994 GS |
2321 | /* |
2322 | =for apidoc sv_setnv_mg | |
2323 | ||
2324 | Like C<sv_setnv>, but also handles 'set' magic. | |
2325 | ||
2326 | =cut | |
2327 | */ | |
2328 | ||
ef50df4b | 2329 | void |
65202027 | 2330 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) |
ef50df4b GS |
2331 | { |
2332 | sv_setnv(sv,num); | |
2333 | SvSETMAGIC(sv); | |
2334 | } | |
2335 | ||
645c22ef DM |
2336 | /* Print an "isn't numeric" warning, using a cleaned-up, |
2337 | * printable version of the offending string | |
2338 | */ | |
2339 | ||
76e3520e | 2340 | STATIC void |
cea2e8a9 | 2341 | S_not_a_number(pTHX_ SV *sv) |
a0d0e21e | 2342 | { |
94463019 JH |
2343 | SV *dsv; |
2344 | char tmpbuf[64]; | |
2345 | char *pv; | |
2346 | ||
2347 | if (DO_UTF8(sv)) { | |
2348 | dsv = sv_2mortal(newSVpv("", 0)); | |
2349 | pv = sv_uni_display(dsv, sv, 10, 0); | |
2350 | } else { | |
2351 | char *d = tmpbuf; | |
2352 | char *limit = tmpbuf + sizeof(tmpbuf) - 8; | |
2353 | /* each *s can expand to 4 chars + "...\0", | |
2354 | i.e. need room for 8 chars */ | |
ecdeb87c | 2355 | |
94463019 JH |
2356 | char *s, *end; |
2357 | for (s = SvPVX(sv), end = s + SvCUR(sv); s < end && d < limit; s++) { | |
2358 | int ch = *s & 0xFF; | |
2359 | if (ch & 128 && !isPRINT_LC(ch)) { | |
2360 | *d++ = 'M'; | |
2361 | *d++ = '-'; | |
2362 | ch &= 127; | |
2363 | } | |
2364 | if (ch == '\n') { | |
2365 | *d++ = '\\'; | |
2366 | *d++ = 'n'; | |
2367 | } | |
2368 | else if (ch == '\r') { | |
2369 | *d++ = '\\'; | |
2370 | *d++ = 'r'; | |
2371 | } | |
2372 | else if (ch == '\f') { | |
2373 | *d++ = '\\'; | |
2374 | *d++ = 'f'; | |
2375 | } | |
2376 | else if (ch == '\\') { | |
2377 | *d++ = '\\'; | |
2378 | *d++ = '\\'; | |
2379 | } | |
2380 | else if (ch == '\0') { | |
2381 | *d++ = '\\'; | |
2382 | *d++ = '0'; | |
2383 | } | |
2384 | else if (isPRINT_LC(ch)) | |
2385 | *d++ = ch; | |
2386 | else { | |
2387 | *d++ = '^'; | |
2388 | *d++ = toCTRL(ch); | |
2389 | } | |
2390 | } | |
2391 | if (s < end) { | |
2392 | *d++ = '.'; | |
2393 | *d++ = '.'; | |
2394 | *d++ = '.'; | |
2395 | } | |
2396 | *d = '\0'; | |
2397 | pv = tmpbuf; | |
a0d0e21e | 2398 | } |
a0d0e21e | 2399 | |
533c011a | 2400 | if (PL_op) |
9014280d | 2401 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
2402 | "Argument \"%s\" isn't numeric in %s", pv, |
2403 | OP_DESC(PL_op)); | |
a0d0e21e | 2404 | else |
9014280d | 2405 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 2406 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
2407 | } |
2408 | ||
c2988b20 NC |
2409 | /* |
2410 | =for apidoc looks_like_number | |
2411 | ||
645c22ef DM |
2412 | Test if the content of an SV looks like a number (or is a number). |
2413 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
2414 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
2415 | |
2416 | =cut | |
2417 | */ | |
2418 | ||
2419 | I32 | |
2420 | Perl_looks_like_number(pTHX_ SV *sv) | |
2421 | { | |
a3b680e6 | 2422 | register const char *sbegin; |
c2988b20 NC |
2423 | STRLEN len; |
2424 | ||
2425 | if (SvPOK(sv)) { | |
2426 | sbegin = SvPVX(sv); | |
2427 | len = SvCUR(sv); | |
2428 | } | |
2429 | else if (SvPOKp(sv)) | |
2430 | sbegin = SvPV(sv, len); | |
2431 | else | |
e0ab1c0e | 2432 | return SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK); |
c2988b20 NC |
2433 | return grok_number(sbegin, len, NULL); |
2434 | } | |
25da4f38 IZ |
2435 | |
2436 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
2437 | until proven guilty, assume that things are not that bad... */ | |
2438 | ||
645c22ef DM |
2439 | /* |
2440 | NV_PRESERVES_UV: | |
2441 | ||
2442 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
2443 | an IV (an assumption perl has been based on to date) it becomes necessary |
2444 | to remove the assumption that the NV always carries enough precision to | |
2445 | recreate the IV whenever needed, and that the NV is the canonical form. | |
2446 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 2447 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
2448 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
2449 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
2450 | conversion where precision was lost and IV/UV/NV slots that have a | |
2451 | valid conversion which has lost no precision | |
645c22ef | 2452 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
2453 | would lose precision, the precise conversion (or differently |
2454 | imprecise conversion) is also performed and cached, to prevent | |
2455 | requests for different numeric formats on the same SV causing | |
2456 | lossy conversion chains. (lossless conversion chains are perfectly | |
2457 | acceptable (still)) | |
2458 | ||
2459 | ||
2460 | flags are used: | |
2461 | SvIOKp is true if the IV slot contains a valid value | |
2462 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
2463 | SvNOKp is true if the NV slot contains a valid value | |
2464 | SvNOK is true only if the NV value is accurate | |
2465 | ||
2466 | so | |
645c22ef | 2467 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
2468 | IV(or UV) would lose accuracy over a direct conversion from PV to |
2469 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
2470 | SV as IOK NOKp (ie not NOK). | |
2471 | ||
645c22ef | 2472 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
2473 | NV would lose accuracy over a direct conversion from PV to NV. If it |
2474 | would, cache both conversions, flag similarly. | |
2475 | ||
2476 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
2477 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
2478 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
2479 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 2480 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 2481 | |
645c22ef DM |
2482 | The benefit of this is that operations such as pp_add know that if |
2483 | SvIOK is true for both left and right operands, then integer addition | |
2484 | can be used instead of floating point (for cases where the result won't | |
2485 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
2486 | loss of precision compared with integer addition. |
2487 | ||
2488 | * making IV and NV equal status should make maths accurate on 64 bit | |
2489 | platforms | |
2490 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 2491 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
2492 | looking for SvIOK and checking for overflow will not outweigh the |
2493 | fp to integer speedup) | |
2494 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
2495 | values, as the change from SvIOK to SvIOKp will cause a call into | |
2496 | sv_2iv each time rather than a macro access direct to the IV slot | |
2497 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 2498 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
2499 | |
2500 | #################################################################### | |
645c22ef DM |
2501 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
2502 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
2503 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
2504 | #################################################################### |
2505 | ||
645c22ef | 2506 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
2507 | performance ratio. |
2508 | */ | |
2509 | ||
2510 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
2511 | # define IS_NUMBER_UNDERFLOW_IV 1 |
2512 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
2513 | # define IS_NUMBER_IV_AND_UV 2 | |
2514 | # define IS_NUMBER_OVERFLOW_IV 4 | |
2515 | # define IS_NUMBER_OVERFLOW_UV 5 | |
2516 | ||
2517 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
2518 | |
2519 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
2520 | STATIC int | |
645c22ef | 2521 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 2522 | { |
1779d84d | 2523 | 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 |
2524 | if (SvNVX(sv) < (NV)IV_MIN) { |
2525 | (void)SvIOKp_on(sv); | |
2526 | (void)SvNOK_on(sv); | |
45977657 | 2527 | SvIV_set(sv, IV_MIN); |
28e5dec8 JH |
2528 | return IS_NUMBER_UNDERFLOW_IV; |
2529 | } | |
2530 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2531 | (void)SvIOKp_on(sv); | |
2532 | (void)SvNOK_on(sv); | |
2533 | SvIsUV_on(sv); | |
607fa7f2 | 2534 | SvUV_set(sv, UV_MAX); |
28e5dec8 JH |
2535 | return IS_NUMBER_OVERFLOW_UV; |
2536 | } | |
c2988b20 NC |
2537 | (void)SvIOKp_on(sv); |
2538 | (void)SvNOK_on(sv); | |
2539 | /* Can't use strtol etc to convert this string. (See truth table in | |
2540 | sv_2iv */ | |
2541 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
45977657 | 2542 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2543 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2544 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
2545 | } else { | |
2546 | /* Integer is imprecise. NOK, IOKp */ | |
2547 | } | |
2548 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
2549 | } | |
2550 | SvIsUV_on(sv); | |
607fa7f2 | 2551 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2552 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { |
2553 | if (SvUVX(sv) == UV_MAX) { | |
2554 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
2555 | possibly be preserved by NV. Hence, it must be overflow. | |
2556 | NOK, IOKp */ | |
2557 | return IS_NUMBER_OVERFLOW_UV; | |
2558 | } | |
2559 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
2560 | } else { | |
2561 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 2562 | } |
c2988b20 | 2563 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 2564 | } |
645c22ef DM |
2565 | #endif /* !NV_PRESERVES_UV*/ |
2566 | ||
891f9566 YST |
2567 | /* sv_2iv() is now a macro using Perl_sv_2iv_flags(); |
2568 | * this function provided for binary compatibility only | |
2569 | */ | |
2570 | ||
2571 | IV | |
2572 | Perl_sv_2iv(pTHX_ register SV *sv) | |
2573 | { | |
2574 | return sv_2iv_flags(sv, SV_GMAGIC); | |
2575 | } | |
2576 | ||
645c22ef | 2577 | /* |
891f9566 | 2578 | =for apidoc sv_2iv_flags |
645c22ef | 2579 | |
891f9566 YST |
2580 | Return the integer value of an SV, doing any necessary string |
2581 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. | |
2582 | Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
645c22ef DM |
2583 | |
2584 | =cut | |
2585 | */ | |
28e5dec8 | 2586 | |
a0d0e21e | 2587 | IV |
891f9566 | 2588 | Perl_sv_2iv_flags(pTHX_ register SV *sv, I32 flags) |
79072805 LW |
2589 | { |
2590 | if (!sv) | |
2591 | return 0; | |
8990e307 | 2592 | if (SvGMAGICAL(sv)) { |
891f9566 YST |
2593 | if (flags & SV_GMAGIC) |
2594 | mg_get(sv); | |
463ee0b2 LW |
2595 | if (SvIOKp(sv)) |
2596 | return SvIVX(sv); | |
748a9306 | 2597 | if (SvNOKp(sv)) { |
25da4f38 | 2598 | return I_V(SvNVX(sv)); |
748a9306 | 2599 | } |
36477c24 | 2600 | if (SvPOKp(sv) && SvLEN(sv)) |
2601 | return asIV(sv); | |
3fe9a6f1 | 2602 | if (!SvROK(sv)) { |
d008e5eb | 2603 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2604 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2605 | report_uninit(sv); |
c6ee37c5 | 2606 | } |
36477c24 | 2607 | return 0; |
3fe9a6f1 | 2608 | } |
463ee0b2 | 2609 | } |
ed6116ce | 2610 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2611 | if (SvROK(sv)) { |
a0d0e21e | 2612 | SV* tmpstr; |
1554e226 | 2613 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2614 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2615 | return SvIV(tmpstr); |
56431972 | 2616 | return PTR2IV(SvRV(sv)); |
a0d0e21e | 2617 | } |
765f542d NC |
2618 | if (SvIsCOW(sv)) { |
2619 | sv_force_normal_flags(sv, 0); | |
47deb5e7 | 2620 | } |
0336b60e | 2621 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2622 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2623 | report_uninit(sv); |
ed6116ce LW |
2624 | return 0; |
2625 | } | |
79072805 | 2626 | } |
25da4f38 IZ |
2627 | if (SvIOKp(sv)) { |
2628 | if (SvIsUV(sv)) { | |
2629 | return (IV)(SvUVX(sv)); | |
2630 | } | |
2631 | else { | |
2632 | return SvIVX(sv); | |
2633 | } | |
463ee0b2 | 2634 | } |
748a9306 | 2635 | if (SvNOKp(sv)) { |
28e5dec8 JH |
2636 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2637 | * without also getting a cached IV/UV from it at the same time | |
2638 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2639 | * IV or UV at same time to avoid this. NWC */ | |
25da4f38 IZ |
2640 | |
2641 | if (SvTYPE(sv) == SVt_NV) | |
2642 | sv_upgrade(sv, SVt_PVNV); | |
2643 | ||
28e5dec8 JH |
2644 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
2645 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
2646 | certainly cast into the IV range at IV_MAX, whereas the correct | |
2647 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
2648 | cases go to UV */ | |
2649 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2650 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2651 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2652 | #ifndef NV_PRESERVES_UV | |
2653 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2654 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2655 | /* Don't flag it as "accurately an integer" if the number | |
2656 | came from a (by definition imprecise) NV operation, and | |
2657 | we're outside the range of NV integer precision */ | |
2658 | #endif | |
2659 | ) { | |
2660 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2661 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2662 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2663 | PTR2UV(sv), |
2664 | SvNVX(sv), | |
2665 | SvIVX(sv))); | |
2666 | ||
2667 | } else { | |
2668 | /* IV not precise. No need to convert from PV, as NV | |
2669 | conversion would already have cached IV if it detected | |
2670 | that PV->IV would be better than PV->NV->IV | |
2671 | flags already correct - don't set public IOK. */ | |
2672 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2673 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2674 | PTR2UV(sv), |
2675 | SvNVX(sv), | |
2676 | SvIVX(sv))); | |
2677 | } | |
2678 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2679 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2680 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2681 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2682 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2683 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2684 | Hopefully for 2s complement IV_MIN is something like | |
2685 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2686 | } |
25da4f38 | 2687 | else { |
607fa7f2 | 2688 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2689 | if ( |
2690 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2691 | #ifndef NV_PRESERVES_UV | |
2692 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2693 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2694 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2695 | /* Don't flag it as "accurately an integer" if the number | |
2696 | came from a (by definition imprecise) NV operation, and | |
2697 | we're outside the range of NV integer precision */ | |
2698 | #endif | |
2699 | ) | |
2700 | SvIOK_on(sv); | |
25da4f38 IZ |
2701 | SvIsUV_on(sv); |
2702 | ret_iv_max: | |
1c846c1f | 2703 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 2704 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 2705 | PTR2UV(sv), |
57def98f JH |
2706 | SvUVX(sv), |
2707 | SvUVX(sv))); | |
25da4f38 IZ |
2708 | return (IV)SvUVX(sv); |
2709 | } | |
748a9306 LW |
2710 | } |
2711 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 2712 | UV value; |
f54cb97a | 2713 | const int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); |
25da4f38 IZ |
2714 | /* We want to avoid a possible problem when we cache an IV which |
2715 | may be later translated to an NV, and the resulting NV is not | |
c2988b20 NC |
2716 | the same as the direct translation of the initial string |
2717 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
2718 | be careful to ensure that the value with the .456 is around if the | |
2719 | NV value is requested in the future). | |
1c846c1f | 2720 | |
25da4f38 IZ |
2721 | This means that if we cache such an IV, we need to cache the |
2722 | NV as well. Moreover, we trade speed for space, and do not | |
28e5dec8 | 2723 | cache the NV if we are sure it's not needed. |
25da4f38 | 2724 | */ |
16b7a9a4 | 2725 | |
c2988b20 NC |
2726 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2727 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2728 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2729 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2730 | if (SvTYPE(sv) < SVt_PVIV) |
2731 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2732 | (void)SvIOK_on(sv); |
c2988b20 NC |
2733 | } else if (SvTYPE(sv) < SVt_PVNV) |
2734 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2735 | |
c2988b20 NC |
2736 | /* If NV preserves UV then we only use the UV value if we know that |
2737 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2738 | then the value returned may have more precision than atof() will | |
2739 | return, even though value isn't perfectly accurate. */ | |
2740 | if ((numtype & (IS_NUMBER_IN_UV | |
2741 | #ifdef NV_PRESERVES_UV | |
2742 | | IS_NUMBER_NOT_INT | |
2743 | #endif | |
2744 | )) == IS_NUMBER_IN_UV) { | |
2745 | /* This won't turn off the public IOK flag if it was set above */ | |
2746 | (void)SvIOKp_on(sv); | |
2747 | ||
2748 | if (!(numtype & IS_NUMBER_NEG)) { | |
2749 | /* positive */; | |
2750 | if (value <= (UV)IV_MAX) { | |
45977657 | 2751 | SvIV_set(sv, (IV)value); |
c2988b20 | 2752 | } else { |
607fa7f2 | 2753 | SvUV_set(sv, value); |
c2988b20 NC |
2754 | SvIsUV_on(sv); |
2755 | } | |
2756 | } else { | |
2757 | /* 2s complement assumption */ | |
2758 | if (value <= (UV)IV_MIN) { | |
45977657 | 2759 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2760 | } else { |
2761 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2762 | I'm assuming it will be rare. */ |
c2988b20 NC |
2763 | if (SvTYPE(sv) < SVt_PVNV) |
2764 | sv_upgrade(sv, SVt_PVNV); | |
2765 | SvNOK_on(sv); | |
2766 | SvIOK_off(sv); | |
2767 | SvIOKp_on(sv); | |
9d6ce603 | 2768 | SvNV_set(sv, -(NV)value); |
45977657 | 2769 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2770 | } |
2771 | } | |
2772 | } | |
2773 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2774 | will be in the previous block to set the IV slot, and the next | |
2775 | block to set the NV slot. So no else here. */ | |
2776 | ||
2777 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2778 | != IS_NUMBER_IN_UV) { | |
2779 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
9d6ce603 | 2780 | SvNV_set(sv, Atof(SvPVX(sv))); |
28e5dec8 | 2781 | |
c2988b20 NC |
2782 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2783 | not_a_number(sv); | |
28e5dec8 | 2784 | |
65202027 | 2785 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2786 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2787 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2788 | #else |
1779d84d | 2789 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2790 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2791 | #endif |
28e5dec8 JH |
2792 | |
2793 | ||
2794 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2795 | (void)SvIOKp_on(sv); |
2796 | (void)SvNOK_on(sv); | |
2797 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2798 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2799 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2800 | SvIOK_on(sv); | |
28e5dec8 | 2801 | } else { |
c2988b20 NC |
2802 | /* Integer is imprecise. NOK, IOKp */ |
2803 | } | |
2804 | /* UV will not work better than IV */ | |
2805 | } else { | |
2806 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2807 | SvIsUV_on(sv); | |
2808 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 2809 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
2810 | SvIsUV_on(sv); |
2811 | } else { | |
607fa7f2 | 2812 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2813 | /* 0xFFFFFFFFFFFFFFFF not an issue in here */ |
2814 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2815 | SvIOK_on(sv); | |
28e5dec8 JH |
2816 | SvIsUV_on(sv); |
2817 | } else { | |
c2988b20 NC |
2818 | /* Integer is imprecise. NOK, IOKp, is UV */ |
2819 | SvIsUV_on(sv); | |
28e5dec8 | 2820 | } |
28e5dec8 | 2821 | } |
c2988b20 NC |
2822 | goto ret_iv_max; |
2823 | } | |
28e5dec8 | 2824 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2825 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2826 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2827 | /* The IV slot will have been set from value returned by | |
2828 | grok_number above. The NV slot has just been set using | |
2829 | Atof. */ | |
560b0c46 | 2830 | SvNOK_on(sv); |
c2988b20 NC |
2831 | assert (SvIOKp(sv)); |
2832 | } else { | |
2833 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2834 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2835 | /* Small enough to preserve all bits. */ | |
2836 | (void)SvIOKp_on(sv); | |
2837 | SvNOK_on(sv); | |
45977657 | 2838 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2839 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
2840 | SvIOK_on(sv); | |
2841 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2842 | this NV is in the preserved range, therefore: */ | |
2843 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2844 | < (UV)IV_MAX)) { | |
32fdb065 | 2845 | 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 |
2846 | } |
2847 | } else { | |
2848 | /* IN_UV NOT_INT | |
2849 | 0 0 already failed to read UV. | |
2850 | 0 1 already failed to read UV. | |
2851 | 1 0 you won't get here in this case. IV/UV | |
2852 | slot set, public IOK, Atof() unneeded. | |
2853 | 1 1 already read UV. | |
2854 | so there's no point in sv_2iuv_non_preserve() attempting | |
2855 | to use atol, strtol, strtoul etc. */ | |
2856 | if (sv_2iuv_non_preserve (sv, numtype) | |
2857 | >= IS_NUMBER_OVERFLOW_IV) | |
2858 | goto ret_iv_max; | |
2859 | } | |
2860 | } | |
28e5dec8 | 2861 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2862 | } |
28e5dec8 | 2863 | } else { |
599cee73 | 2864 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 2865 | report_uninit(sv); |
25da4f38 IZ |
2866 | if (SvTYPE(sv) < SVt_IV) |
2867 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2868 | sv_upgrade(sv, SVt_IV); | |
a0d0e21e | 2869 | return 0; |
79072805 | 2870 | } |
1d7c1841 GS |
2871 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2872 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2873 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2874 | } |
2875 | ||
891f9566 YST |
2876 | /* sv_2uv() is now a macro using Perl_sv_2uv_flags(); |
2877 | * this function provided for binary compatibility only | |
2878 | */ | |
2879 | ||
2880 | UV | |
2881 | Perl_sv_2uv(pTHX_ register SV *sv) | |
2882 | { | |
2883 | return sv_2uv_flags(sv, SV_GMAGIC); | |
2884 | } | |
2885 | ||
645c22ef | 2886 | /* |
891f9566 | 2887 | =for apidoc sv_2uv_flags |
645c22ef DM |
2888 | |
2889 | Return the unsigned integer value of an SV, doing any necessary string | |
891f9566 YST |
2890 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. |
2891 | Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros. | |
645c22ef DM |
2892 | |
2893 | =cut | |
2894 | */ | |
2895 | ||
ff68c719 | 2896 | UV |
891f9566 | 2897 | Perl_sv_2uv_flags(pTHX_ register SV *sv, I32 flags) |
ff68c719 | 2898 | { |
2899 | if (!sv) | |
2900 | return 0; | |
2901 | if (SvGMAGICAL(sv)) { | |
891f9566 YST |
2902 | if (flags & SV_GMAGIC) |
2903 | mg_get(sv); | |
ff68c719 | 2904 | if (SvIOKp(sv)) |
2905 | return SvUVX(sv); | |
2906 | if (SvNOKp(sv)) | |
2907 | return U_V(SvNVX(sv)); | |
36477c24 | 2908 | if (SvPOKp(sv) && SvLEN(sv)) |
2909 | return asUV(sv); | |
3fe9a6f1 | 2910 | if (!SvROK(sv)) { |
d008e5eb | 2911 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2912 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2913 | report_uninit(sv); |
c6ee37c5 | 2914 | } |
36477c24 | 2915 | return 0; |
3fe9a6f1 | 2916 | } |
ff68c719 | 2917 | } |
2918 | if (SvTHINKFIRST(sv)) { | |
2919 | if (SvROK(sv)) { | |
ff68c719 | 2920 | SV* tmpstr; |
1554e226 | 2921 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2922 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2923 | return SvUV(tmpstr); |
56431972 | 2924 | return PTR2UV(SvRV(sv)); |
ff68c719 | 2925 | } |
765f542d NC |
2926 | if (SvIsCOW(sv)) { |
2927 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2928 | } |
0336b60e | 2929 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2930 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2931 | report_uninit(sv); |
ff68c719 | 2932 | return 0; |
2933 | } | |
2934 | } | |
25da4f38 IZ |
2935 | if (SvIOKp(sv)) { |
2936 | if (SvIsUV(sv)) { | |
2937 | return SvUVX(sv); | |
2938 | } | |
2939 | else { | |
2940 | return (UV)SvIVX(sv); | |
2941 | } | |
ff68c719 | 2942 | } |
2943 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
2944 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2945 | * without also getting a cached IV/UV from it at the same time | |
2946 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2947 | * IV or UV at same time to avoid this. */ | |
2948 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
2949 | ||
25da4f38 IZ |
2950 | if (SvTYPE(sv) == SVt_NV) |
2951 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 JH |
2952 | |
2953 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ | |
2954 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2955 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2956 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2957 | #ifndef NV_PRESERVES_UV | |
2958 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2959 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2960 | /* Don't flag it as "accurately an integer" if the number | |
2961 | came from a (by definition imprecise) NV operation, and | |
2962 | we're outside the range of NV integer precision */ | |
2963 | #endif | |
2964 | ) { | |
2965 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2966 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2967 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2968 | PTR2UV(sv), |
2969 | SvNVX(sv), | |
2970 | SvIVX(sv))); | |
2971 | ||
2972 | } else { | |
2973 | /* IV not precise. No need to convert from PV, as NV | |
2974 | conversion would already have cached IV if it detected | |
2975 | that PV->IV would be better than PV->NV->IV | |
2976 | flags already correct - don't set public IOK. */ | |
2977 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2978 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2979 | PTR2UV(sv), |
2980 | SvNVX(sv), | |
2981 | SvIVX(sv))); | |
2982 | } | |
2983 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2984 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2985 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2986 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2987 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2988 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2989 | Hopefully for 2s complement IV_MIN is something like | |
2990 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2991 | } |
28e5dec8 | 2992 | else { |
607fa7f2 | 2993 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2994 | if ( |
2995 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2996 | #ifndef NV_PRESERVES_UV | |
2997 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2998 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2999 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
3000 | /* Don't flag it as "accurately an integer" if the number | |
3001 | came from a (by definition imprecise) NV operation, and | |
3002 | we're outside the range of NV integer precision */ | |
3003 | #endif | |
3004 | ) | |
3005 | SvIOK_on(sv); | |
3006 | SvIsUV_on(sv); | |
1c846c1f | 3007 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
28e5dec8 | 3008 | "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n", |
57def98f | 3009 | PTR2UV(sv), |
28e5dec8 JH |
3010 | SvUVX(sv), |
3011 | SvUVX(sv))); | |
25da4f38 | 3012 | } |
ff68c719 | 3013 | } |
3014 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 3015 | UV value; |
f54cb97a | 3016 | const int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); |
25da4f38 IZ |
3017 | |
3018 | /* We want to avoid a possible problem when we cache a UV which | |
3019 | may be later translated to an NV, and the resulting NV is not | |
3020 | the translation of the initial data. | |
1c846c1f | 3021 | |
25da4f38 IZ |
3022 | This means that if we cache such a UV, we need to cache the |
3023 | NV as well. Moreover, we trade speed for space, and do not | |
3024 | cache the NV if not needed. | |
3025 | */ | |
16b7a9a4 | 3026 | |
c2988b20 NC |
3027 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
3028 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
3029 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 3030 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 | 3031 | if (SvTYPE(sv) < SVt_PVIV) |
f7bbb42a JH |
3032 | sv_upgrade(sv, SVt_PVIV); |
3033 | (void)SvIOK_on(sv); | |
c2988b20 NC |
3034 | } else if (SvTYPE(sv) < SVt_PVNV) |
3035 | sv_upgrade(sv, SVt_PVNV); | |
d460ef45 | 3036 | |
c2988b20 NC |
3037 | /* If NV preserves UV then we only use the UV value if we know that |
3038 | we aren't going to call atof() below. If NVs don't preserve UVs | |
3039 | then the value returned may have more precision than atof() will | |
3040 | return, even though it isn't accurate. */ | |
3041 | if ((numtype & (IS_NUMBER_IN_UV | |
3042 | #ifdef NV_PRESERVES_UV | |
3043 | | IS_NUMBER_NOT_INT | |
3044 | #endif | |
3045 | )) == IS_NUMBER_IN_UV) { | |
3046 | /* This won't turn off the public IOK flag if it was set above */ | |
3047 | (void)SvIOKp_on(sv); | |
3048 | ||
3049 | if (!(numtype & IS_NUMBER_NEG)) { | |
3050 | /* positive */; | |
3051 | if (value <= (UV)IV_MAX) { | |
45977657 | 3052 | SvIV_set(sv, (IV)value); |
28e5dec8 JH |
3053 | } else { |
3054 | /* it didn't overflow, and it was positive. */ | |
607fa7f2 | 3055 | SvUV_set(sv, value); |
28e5dec8 JH |
3056 | SvIsUV_on(sv); |
3057 | } | |
c2988b20 NC |
3058 | } else { |
3059 | /* 2s complement assumption */ | |
3060 | if (value <= (UV)IV_MIN) { | |
45977657 | 3061 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
3062 | } else { |
3063 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 3064 | I'm assuming it will be rare. */ |
c2988b20 NC |
3065 | if (SvTYPE(sv) < SVt_PVNV) |
3066 | sv_upgrade(sv, SVt_PVNV); | |
3067 | SvNOK_on(sv); | |
3068 | SvIOK_off(sv); | |
3069 | SvIOKp_on(sv); | |
9d6ce603 | 3070 | SvNV_set(sv, -(NV)value); |
45977657 | 3071 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
3072 | } |
3073 | } | |
3074 | } | |
3075 | ||
3076 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
3077 | != IS_NUMBER_IN_UV) { | |
3078 | /* It wasn't an integer, or it overflowed the UV. */ | |
9d6ce603 | 3079 | SvNV_set(sv, Atof(SvPVX(sv))); |
28e5dec8 | 3080 | |
c2988b20 | 3081 | if (! numtype && ckWARN(WARN_NUMERIC)) |
28e5dec8 JH |
3082 | not_a_number(sv); |
3083 | ||
3084 | #if defined(USE_LONG_DOUBLE) | |
c2988b20 NC |
3085 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n", |
3086 | PTR2UV(sv), SvNVX(sv))); | |
28e5dec8 | 3087 | #else |
1779d84d | 3088 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"NVgf")\n", |
c2988b20 | 3089 | PTR2UV(sv), SvNVX(sv))); |
28e5dec8 JH |
3090 | #endif |
3091 | ||
3092 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
3093 | (void)SvIOKp_on(sv); |
3094 | (void)SvNOK_on(sv); | |
3095 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 3096 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
3097 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
3098 | SvIOK_on(sv); | |
3099 | } else { | |
3100 | /* Integer is imprecise. NOK, IOKp */ | |
3101 | } | |
3102 | /* UV will not work better than IV */ | |
3103 | } else { | |
3104 | if (SvNVX(sv) > (NV)UV_MAX) { | |
3105 | SvIsUV_on(sv); | |
3106 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 3107 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
3108 | SvIsUV_on(sv); |
3109 | } else { | |
607fa7f2 | 3110 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
3111 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs |
3112 | NV preservse UV so can do correct comparison. */ | |
3113 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
3114 | SvIOK_on(sv); | |
3115 | SvIsUV_on(sv); | |
3116 | } else { | |
3117 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
3118 | SvIsUV_on(sv); | |
3119 | } | |
3120 | } | |
3121 | } | |
28e5dec8 | 3122 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
3123 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3124 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
3125 | /* The UV slot will have been set from value returned by | |
3126 | grok_number above. The NV slot has just been set using | |
3127 | Atof. */ | |
560b0c46 | 3128 | SvNOK_on(sv); |
c2988b20 NC |
3129 | assert (SvIOKp(sv)); |
3130 | } else { | |
3131 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
3132 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
3133 | /* Small enough to preserve all bits. */ | |
3134 | (void)SvIOKp_on(sv); | |
3135 | SvNOK_on(sv); | |
45977657 | 3136 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
3137 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
3138 | SvIOK_on(sv); | |
3139 | /* Assumption: first non-preserved integer is < IV_MAX, | |
3140 | this NV is in the preserved range, therefore: */ | |
3141 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
3142 | < (UV)IV_MAX)) { | |
32fdb065 | 3143 | 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 |
3144 | } |
3145 | } else | |
3146 | sv_2iuv_non_preserve (sv, numtype); | |
3147 | } | |
28e5dec8 | 3148 | #endif /* NV_PRESERVES_UV */ |
f7bbb42a | 3149 | } |
ff68c719 | 3150 | } |
3151 | else { | |
d008e5eb | 3152 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3153 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3154 | report_uninit(sv); |
c6ee37c5 | 3155 | } |
25da4f38 IZ |
3156 | if (SvTYPE(sv) < SVt_IV) |
3157 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3158 | sv_upgrade(sv, SVt_IV); | |
ff68c719 | 3159 | return 0; |
3160 | } | |
25da4f38 | 3161 | |
1d7c1841 GS |
3162 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
3163 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 3164 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 3165 | } |
3166 | ||
645c22ef DM |
3167 | /* |
3168 | =for apidoc sv_2nv | |
3169 | ||
3170 | Return the num value of an SV, doing any necessary string or integer | |
3171 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
3172 | macros. | |
3173 | ||
3174 | =cut | |
3175 | */ | |
3176 | ||
65202027 | 3177 | NV |
864dbfa3 | 3178 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
3179 | { |
3180 | if (!sv) | |
3181 | return 0.0; | |
8990e307 | 3182 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
3183 | mg_get(sv); |
3184 | if (SvNOKp(sv)) | |
3185 | return SvNVX(sv); | |
a0d0e21e | 3186 | if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 NC |
3187 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && |
3188 | !grok_number(SvPVX(sv), SvCUR(sv), NULL)) | |
a0d0e21e | 3189 | not_a_number(sv); |
097ee67d | 3190 | return Atof(SvPVX(sv)); |
a0d0e21e | 3191 | } |
25da4f38 | 3192 | if (SvIOKp(sv)) { |
1c846c1f | 3193 | if (SvIsUV(sv)) |
65202027 | 3194 | return (NV)SvUVX(sv); |
25da4f38 | 3195 | else |
65202027 | 3196 | return (NV)SvIVX(sv); |
25da4f38 | 3197 | } |
16d20bd9 | 3198 | if (!SvROK(sv)) { |
d008e5eb | 3199 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3200 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3201 | report_uninit(sv); |
c6ee37c5 | 3202 | } |
16d20bd9 AD |
3203 | return 0; |
3204 | } | |
463ee0b2 | 3205 | } |
ed6116ce | 3206 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 3207 | if (SvROK(sv)) { |
a0d0e21e | 3208 | SV* tmpstr; |
1554e226 | 3209 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 3210 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 3211 | return SvNV(tmpstr); |
56431972 | 3212 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 3213 | } |
765f542d NC |
3214 | if (SvIsCOW(sv)) { |
3215 | sv_force_normal_flags(sv, 0); | |
8a818333 | 3216 | } |
0336b60e | 3217 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 3218 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3219 | report_uninit(sv); |
ed6116ce LW |
3220 | return 0.0; |
3221 | } | |
79072805 LW |
3222 | } |
3223 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
3224 | if (SvTYPE(sv) == SVt_IV) |
3225 | sv_upgrade(sv, SVt_PVNV); | |
3226 | else | |
3227 | sv_upgrade(sv, SVt_NV); | |
906f284f | 3228 | #ifdef USE_LONG_DOUBLE |
097ee67d | 3229 | DEBUG_c({ |
f93f4e46 | 3230 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
3231 | PerlIO_printf(Perl_debug_log, |
3232 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
3233 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
3234 | RESTORE_NUMERIC_LOCAL(); |
3235 | }); | |
65202027 | 3236 | #else |
572bbb43 | 3237 | DEBUG_c({ |
f93f4e46 | 3238 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 3239 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 3240 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
3241 | RESTORE_NUMERIC_LOCAL(); |
3242 | }); | |
572bbb43 | 3243 | #endif |
79072805 LW |
3244 | } |
3245 | else if (SvTYPE(sv) < SVt_PVNV) | |
3246 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
3247 | if (SvNOKp(sv)) { |
3248 | return SvNVX(sv); | |
61604483 | 3249 | } |
59d8ce62 | 3250 | if (SvIOKp(sv)) { |
9d6ce603 | 3251 | SvNV_set(sv, SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv)); |
28e5dec8 JH |
3252 | #ifdef NV_PRESERVES_UV |
3253 | SvNOK_on(sv); | |
3254 | #else | |
3255 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
3256 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
3257 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
3258 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
3259 | SvNOK_on(sv); | |
3260 | else | |
3261 | SvNOKp_on(sv); | |
3262 | #endif | |
93a17b20 | 3263 | } |
748a9306 | 3264 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 3265 | UV value; |
f54cb97a | 3266 | const int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); |
c2988b20 | 3267 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !numtype) |
a0d0e21e | 3268 | not_a_number(sv); |
28e5dec8 | 3269 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
3270 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3271 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 3272 | /* It's definitely an integer */ |
9d6ce603 | 3273 | SvNV_set(sv, (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value); |
c2988b20 | 3274 | } else |
9d6ce603 | 3275 | SvNV_set(sv, Atof(SvPVX(sv))); |
28e5dec8 JH |
3276 | SvNOK_on(sv); |
3277 | #else | |
9d6ce603 | 3278 | SvNV_set(sv, Atof(SvPVX(sv))); |
28e5dec8 JH |
3279 | /* Only set the public NV OK flag if this NV preserves the value in |
3280 | the PV at least as well as an IV/UV would. | |
3281 | Not sure how to do this 100% reliably. */ | |
3282 | /* if that shift count is out of range then Configure's test is | |
3283 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
3284 | UV_BITS */ | |
3285 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 3286 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 3287 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
3288 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
3289 | /* Can't use strtol etc to convert this string, so don't try. | |
3290 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
3291 | SvNOK_on(sv); | |
3292 | } else { | |
3293 | /* value has been set. It may not be precise. */ | |
3294 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
3295 | /* 2s complement assumption for (UV)IV_MIN */ | |
3296 | SvNOK_on(sv); /* Integer is too negative. */ | |
3297 | } else { | |
3298 | SvNOKp_on(sv); | |
3299 | SvIOKp_on(sv); | |
6fa402ec | 3300 | |
c2988b20 | 3301 | if (numtype & IS_NUMBER_NEG) { |
45977657 | 3302 | SvIV_set(sv, -(IV)value); |
c2988b20 | 3303 | } else if (value <= (UV)IV_MAX) { |
45977657 | 3304 | SvIV_set(sv, (IV)value); |
c2988b20 | 3305 | } else { |
607fa7f2 | 3306 | SvUV_set(sv, value); |
c2988b20 NC |
3307 | SvIsUV_on(sv); |
3308 | } | |
3309 | ||
3310 | if (numtype & IS_NUMBER_NOT_INT) { | |
3311 | /* I believe that even if the original PV had decimals, | |
3312 | they are lost beyond the limit of the FP precision. | |
3313 | However, neither is canonical, so both only get p | |
3314 | flags. NWC, 2000/11/25 */ | |
3315 | /* Both already have p flags, so do nothing */ | |
3316 | } else { | |
3317 | NV nv = SvNVX(sv); | |
3318 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
3319 | if (SvIVX(sv) == I_V(nv)) { | |
3320 | SvNOK_on(sv); | |
3321 | SvIOK_on(sv); | |
3322 | } else { | |
3323 | SvIOK_on(sv); | |
3324 | /* It had no "." so it must be integer. */ | |
3325 | } | |
3326 | } else { | |
3327 | /* between IV_MAX and NV(UV_MAX). | |
3328 | Could be slightly > UV_MAX */ | |
6fa402ec | 3329 | |
c2988b20 NC |
3330 | if (numtype & IS_NUMBER_NOT_INT) { |
3331 | /* UV and NV both imprecise. */ | |
3332 | } else { | |
3333 | UV nv_as_uv = U_V(nv); | |
3334 | ||
3335 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
3336 | SvNOK_on(sv); | |
3337 | SvIOK_on(sv); | |
3338 | } else { | |
3339 | SvIOK_on(sv); | |
3340 | } | |
3341 | } | |
3342 | } | |
3343 | } | |
3344 | } | |
3345 | } | |
28e5dec8 | 3346 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 3347 | } |
79072805 | 3348 | else { |
599cee73 | 3349 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 3350 | report_uninit(sv); |
25da4f38 IZ |
3351 | if (SvTYPE(sv) < SVt_NV) |
3352 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
3353 | /* XXX Ilya implies that this is a bug in callers that assume this |
3354 | and ideally should be fixed. */ | |
25da4f38 | 3355 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 3356 | return 0.0; |
79072805 | 3357 | } |
572bbb43 | 3358 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 3359 | DEBUG_c({ |
f93f4e46 | 3360 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
3361 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
3362 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
3363 | RESTORE_NUMERIC_LOCAL(); |
3364 | }); | |
65202027 | 3365 | #else |
572bbb43 | 3366 | DEBUG_c({ |
f93f4e46 | 3367 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 3368 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 3369 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
3370 | RESTORE_NUMERIC_LOCAL(); |
3371 | }); | |
572bbb43 | 3372 | #endif |
463ee0b2 | 3373 | return SvNVX(sv); |
79072805 LW |
3374 | } |
3375 | ||
645c22ef DM |
3376 | /* asIV(): extract an integer from the string value of an SV. |
3377 | * Caller must validate PVX */ | |
3378 | ||
76e3520e | 3379 | STATIC IV |
cea2e8a9 | 3380 | S_asIV(pTHX_ SV *sv) |
36477c24 | 3381 | { |
c2988b20 NC |
3382 | UV value; |
3383 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
3384 | ||
3385 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
3386 | == IS_NUMBER_IN_UV) { | |
645c22ef | 3387 | /* It's definitely an integer */ |
c2988b20 NC |
3388 | if (numtype & IS_NUMBER_NEG) { |
3389 | if (value < (UV)IV_MIN) | |
3390 | return -(IV)value; | |
3391 | } else { | |
3392 | if (value < (UV)IV_MAX) | |
3393 | return (IV)value; | |
3394 | } | |
3395 | } | |
d008e5eb | 3396 | if (!numtype) { |
d008e5eb GS |
3397 | if (ckWARN(WARN_NUMERIC)) |
3398 | not_a_number(sv); | |
3399 | } | |
c2988b20 | 3400 | return I_V(Atof(SvPVX(sv))); |
36477c24 | 3401 | } |
3402 | ||
645c22ef DM |
3403 | /* asUV(): extract an unsigned integer from the string value of an SV |
3404 | * Caller must validate PVX */ | |
3405 | ||
76e3520e | 3406 | STATIC UV |
cea2e8a9 | 3407 | S_asUV(pTHX_ SV *sv) |
36477c24 | 3408 | { |
c2988b20 NC |
3409 | UV value; |
3410 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
36477c24 | 3411 | |
c2988b20 NC |
3412 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3413 | == IS_NUMBER_IN_UV) { | |
645c22ef | 3414 | /* It's definitely an integer */ |
6fa402ec | 3415 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
3416 | return value; |
3417 | } | |
d008e5eb | 3418 | if (!numtype) { |
d008e5eb GS |
3419 | if (ckWARN(WARN_NUMERIC)) |
3420 | not_a_number(sv); | |
3421 | } | |
097ee67d | 3422 | return U_V(Atof(SvPVX(sv))); |
36477c24 | 3423 | } |
3424 | ||
645c22ef DM |
3425 | /* |
3426 | =for apidoc sv_2pv_nolen | |
3427 | ||
3428 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
3429 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
3430 | =cut | |
3431 | */ | |
3432 | ||
79072805 | 3433 | char * |
864dbfa3 | 3434 | Perl_sv_2pv_nolen(pTHX_ register SV *sv) |
1fa8b10d JD |
3435 | { |
3436 | STRLEN n_a; | |
3437 | return sv_2pv(sv, &n_a); | |
3438 | } | |
3439 | ||
645c22ef DM |
3440 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
3441 | * UV as a string towards the end of buf, and return pointers to start and | |
3442 | * end of it. | |
3443 | * | |
3444 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
3445 | */ | |
3446 | ||
864dbfa3 | 3447 | static char * |
25da4f38 IZ |
3448 | uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
3449 | { | |
25da4f38 IZ |
3450 | char *ptr = buf + TYPE_CHARS(UV); |
3451 | char *ebuf = ptr; | |
3452 | int sign; | |
25da4f38 IZ |
3453 | |
3454 | if (is_uv) | |
3455 | sign = 0; | |
3456 | else if (iv >= 0) { | |
3457 | uv = iv; | |
3458 | sign = 0; | |
3459 | } else { | |
3460 | uv = -iv; | |
3461 | sign = 1; | |
3462 | } | |
3463 | do { | |
eb160463 | 3464 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
3465 | } while (uv /= 10); |
3466 | if (sign) | |
3467 | *--ptr = '-'; | |
3468 | *peob = ebuf; | |
3469 | return ptr; | |
3470 | } | |
3471 | ||
09540bc3 JH |
3472 | /* sv_2pv() is now a macro using Perl_sv_2pv_flags(); |
3473 | * this function provided for binary compatibility only | |
3474 | */ | |
3475 | ||
3476 | char * | |
3477 | Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp) | |
3478 | { | |
3479 | return sv_2pv_flags(sv, lp, SV_GMAGIC); | |
3480 | } | |
3481 | ||
645c22ef DM |
3482 | /* |
3483 | =for apidoc sv_2pv_flags | |
3484 | ||
ff276b08 | 3485 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
3486 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
3487 | if necessary. | |
3488 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
3489 | usually end up here too. | |
3490 | ||
3491 | =cut | |
3492 | */ | |
3493 | ||
8d6d96c1 HS |
3494 | char * |
3495 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
3496 | { | |
79072805 LW |
3497 | register char *s; |
3498 | int olderrno; | |
cb50f42d | 3499 | SV *tsv, *origsv; |
25da4f38 IZ |
3500 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
3501 | char *tmpbuf = tbuf; | |
79072805 | 3502 | |
463ee0b2 LW |
3503 | if (!sv) { |
3504 | *lp = 0; | |
73d840c0 | 3505 | return (char *)""; |
463ee0b2 | 3506 | } |
8990e307 | 3507 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
3508 | if (flags & SV_GMAGIC) |
3509 | mg_get(sv); | |
463ee0b2 LW |
3510 | if (SvPOKp(sv)) { |
3511 | *lp = SvCUR(sv); | |
3512 | return SvPVX(sv); | |
3513 | } | |
cf2093f6 | 3514 | if (SvIOKp(sv)) { |
1c846c1f | 3515 | if (SvIsUV(sv)) |
57def98f | 3516 | (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 3517 | else |
57def98f | 3518 | (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv)); |
46fc3d4c | 3519 | tsv = Nullsv; |
a0d0e21e | 3520 | goto tokensave; |
463ee0b2 LW |
3521 | } |
3522 | if (SvNOKp(sv)) { | |
2d4389e4 | 3523 | Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf); |
46fc3d4c | 3524 | tsv = Nullsv; |
a0d0e21e | 3525 | goto tokensave; |
463ee0b2 | 3526 | } |
16d20bd9 | 3527 | if (!SvROK(sv)) { |
d008e5eb | 3528 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3529 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3530 | report_uninit(sv); |
c6ee37c5 | 3531 | } |
16d20bd9 | 3532 | *lp = 0; |
73d840c0 | 3533 | return (char *)""; |
16d20bd9 | 3534 | } |
463ee0b2 | 3535 | } |
ed6116ce LW |
3536 | if (SvTHINKFIRST(sv)) { |
3537 | if (SvROK(sv)) { | |
a0d0e21e | 3538 | SV* tmpstr; |
e1ec3a88 | 3539 | register const char *typestr; |
1554e226 | 3540 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 3541 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
446eaa42 YST |
3542 | char *pv = SvPV(tmpstr, *lp); |
3543 | if (SvUTF8(tmpstr)) | |
3544 | SvUTF8_on(sv); | |
3545 | else | |
3546 | SvUTF8_off(sv); | |
3547 | return pv; | |
3548 | } | |
cb50f42d | 3549 | origsv = sv; |
ed6116ce LW |
3550 | sv = (SV*)SvRV(sv); |
3551 | if (!sv) | |
e1ec3a88 | 3552 | typestr = "NULLREF"; |
ed6116ce | 3553 | else { |
f9277f47 IZ |
3554 | MAGIC *mg; |
3555 | ||
ed6116ce | 3556 | switch (SvTYPE(sv)) { |
f9277f47 IZ |
3557 | case SVt_PVMG: |
3558 | if ( ((SvFLAGS(sv) & | |
1c846c1f | 3559 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) |
faf82a0b | 3560 | == (SVs_OBJECT|SVs_SMG)) |
14befaf4 | 3561 | && (mg = mg_find(sv, PERL_MAGIC_qr))) { |
e1ec3a88 | 3562 | const regexp *re = (regexp *)mg->mg_obj; |
1bd3ad17 | 3563 | |
2cd61cdb | 3564 | if (!mg->mg_ptr) { |
e1ec3a88 | 3565 | const char *fptr = "msix"; |
8782bef2 GB |
3566 | char reflags[6]; |
3567 | char ch; | |
3568 | int left = 0; | |
3569 | int right = 4; | |
ff385a1b | 3570 | char need_newline = 0; |
eb160463 | 3571 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
8782bef2 | 3572 | |
155aba94 | 3573 | while((ch = *fptr++)) { |
8782bef2 GB |
3574 | if(reganch & 1) { |
3575 | reflags[left++] = ch; | |
3576 | } | |
3577 | else { | |
3578 | reflags[right--] = ch; | |
3579 | } | |
3580 | reganch >>= 1; | |
3581 | } | |
3582 | if(left != 4) { | |
3583 | reflags[left] = '-'; | |
3584 | left = 5; | |
3585 | } | |
3586 | ||
3587 | mg->mg_len = re->prelen + 4 + left; | |
ff385a1b JF |
3588 | /* |
3589 | * If /x was used, we have to worry about a regex | |
3590 | * ending with a comment later being embedded | |
3591 | * within another regex. If so, we don't want this | |
3592 | * regex's "commentization" to leak out to the | |
3593 | * right part of the enclosing regex, we must cap | |
3594 | * it with a newline. | |
3595 | * | |
3596 | * So, if /x was used, we scan backwards from the | |
3597 | * end of the regex. If we find a '#' before we | |
3598 | * find a newline, we need to add a newline | |
3599 | * ourself. If we find a '\n' first (or if we | |
3600 | * don't find '#' or '\n'), we don't need to add | |
3601 | * anything. -jfriedl | |
3602 | */ | |
3603 | if (PMf_EXTENDED & re->reganch) | |
3604 | { | |
e1ec3a88 | 3605 | const char *endptr = re->precomp + re->prelen; |
ff385a1b JF |
3606 | while (endptr >= re->precomp) |
3607 | { | |
e1ec3a88 | 3608 | const char c = *(endptr--); |
ff385a1b JF |
3609 | if (c == '\n') |
3610 | break; /* don't need another */ | |
3611 | if (c == '#') { | |
3612 | /* we end while in a comment, so we | |
3613 | need a newline */ | |
3614 | mg->mg_len++; /* save space for it */ | |
3615 | need_newline = 1; /* note to add it */ | |
ab01544f | 3616 | break; |
ff385a1b JF |
3617 | } |
3618 | } | |
3619 | } | |
3620 | ||
8782bef2 GB |
3621 | New(616, mg->mg_ptr, mg->mg_len + 1 + left, char); |
3622 | Copy("(?", mg->mg_ptr, 2, char); | |
3623 | Copy(reflags, mg->mg_ptr+2, left, char); | |
3624 | Copy(":", mg->mg_ptr+left+2, 1, char); | |
3625 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
ff385a1b JF |
3626 | if (need_newline) |
3627 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
1bd3ad17 IZ |
3628 | mg->mg_ptr[mg->mg_len - 1] = ')'; |
3629 | mg->mg_ptr[mg->mg_len] = 0; | |
3630 | } | |
3280af22 | 3631 | PL_reginterp_cnt += re->program[0].next_off; |
cb50f42d YST |
3632 | |
3633 | if (re->reganch & ROPT_UTF8) | |
3634 | SvUTF8_on(origsv); | |
3635 | else | |
3636 | SvUTF8_off(origsv); | |
1bd3ad17 IZ |
3637 | *lp = mg->mg_len; |
3638 | return mg->mg_ptr; | |
f9277f47 IZ |
3639 | } |
3640 | /* Fall through */ | |
ed6116ce LW |
3641 | case SVt_NULL: |
3642 | case SVt_IV: | |
3643 | case SVt_NV: | |
3644 | case SVt_RV: | |
3645 | case SVt_PV: | |
3646 | case SVt_PVIV: | |
3647 | case SVt_PVNV: | |
e1ec3a88 AL |
3648 | case SVt_PVBM: typestr = SvROK(sv) ? "REF" : "SCALAR"; break; |
3649 | case SVt_PVLV: typestr = SvROK(sv) ? "REF" | |
be65207d DM |
3650 | /* tied lvalues should appear to be |
3651 | * scalars for backwards compatitbility */ | |
3652 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
3653 | ? "SCALAR" : "LVALUE"; break; | |
e1ec3a88 AL |
3654 | case SVt_PVAV: typestr = "ARRAY"; break; |
3655 | case SVt_PVHV: typestr = "HASH"; break; | |
3656 | case SVt_PVCV: typestr = "CODE"; break; | |
3657 | case SVt_PVGV: typestr = "GLOB"; break; | |
3658 | case SVt_PVFM: typestr = "FORMAT"; break; | |
3659 | case SVt_PVIO: typestr = "IO"; break; | |
3660 | default: typestr = "UNKNOWN"; break; | |
ed6116ce | 3661 | } |
46fc3d4c | 3662 | tsv = NEWSV(0,0); |
a5cb6b62 NC |
3663 | if (SvOBJECT(sv)) { |
3664 | const char *name = HvNAME(SvSTASH(sv)); | |
3665 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s(0x%"UVxf")", | |
e1ec3a88 | 3666 | name ? name : "__ANON__" , typestr, PTR2UV(sv)); |
a5cb6b62 | 3667 | } |
ed6116ce | 3668 | else |
e1ec3a88 | 3669 | Perl_sv_setpvf(aTHX_ tsv, "%s(0x%"UVxf")", typestr, PTR2UV(sv)); |
a0d0e21e | 3670 | goto tokensaveref; |
463ee0b2 | 3671 | } |
e1ec3a88 | 3672 | *lp = strlen(typestr); |
73d840c0 | 3673 | return (char *)typestr; |
79072805 | 3674 | } |
0336b60e | 3675 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 3676 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3677 | report_uninit(sv); |
ed6116ce | 3678 | *lp = 0; |
73d840c0 | 3679 | return (char *)""; |
79072805 | 3680 | } |
79072805 | 3681 | } |
28e5dec8 JH |
3682 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
3683 | /* I'm assuming that if both IV and NV are equally valid then | |
3684 | converting the IV is going to be more efficient */ | |
e1ec3a88 AL |
3685 | const U32 isIOK = SvIOK(sv); |
3686 | const U32 isUIOK = SvIsUV(sv); | |
28e5dec8 JH |
3687 | char buf[TYPE_CHARS(UV)]; |
3688 | char *ebuf, *ptr; | |
3689 | ||
3690 | if (SvTYPE(sv) < SVt_PVIV) | |
3691 | sv_upgrade(sv, SVt_PVIV); | |
3692 | if (isUIOK) | |
3693 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
3694 | else | |
3695 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
eb160463 | 3696 | SvGROW(sv, (STRLEN)(ebuf - ptr + 1)); /* inlined from sv_setpvn */ |
28e5dec8 JH |
3697 | Move(ptr,SvPVX(sv),ebuf - ptr,char); |
3698 | SvCUR_set(sv, ebuf - ptr); | |
3699 | s = SvEND(sv); | |
3700 | *s = '\0'; | |
3701 | if (isIOK) | |
3702 | SvIOK_on(sv); | |
3703 | else | |
3704 | SvIOKp_on(sv); | |
3705 | if (isUIOK) | |
3706 | SvIsUV_on(sv); | |
3707 | } | |
3708 | else if (SvNOKp(sv)) { | |
79072805 LW |
3709 | if (SvTYPE(sv) < SVt_PVNV) |
3710 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 3711 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
59155cc0 | 3712 | SvGROW(sv, NV_DIG + 20); |
463ee0b2 | 3713 | s = SvPVX(sv); |
79072805 | 3714 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 3715 | #ifdef apollo |
463ee0b2 | 3716 | if (SvNVX(sv) == 0.0) |
79072805 LW |
3717 | (void)strcpy(s,"0"); |
3718 | else | |
3719 | #endif /*apollo*/ | |
bbce6d69 | 3720 | { |
2d4389e4 | 3721 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 3722 | } |
79072805 | 3723 | errno = olderrno; |
a0d0e21e LW |
3724 | #ifdef FIXNEGATIVEZERO |
3725 | if (*s == '-' && s[1] == '0' && !s[2]) | |
3726 | strcpy(s,"0"); | |
3727 | #endif | |
79072805 LW |
3728 | while (*s) s++; |
3729 | #ifdef hcx | |
3730 | if (s[-1] == '.') | |
46fc3d4c | 3731 | *--s = '\0'; |
79072805 LW |
3732 | #endif |
3733 | } | |
79072805 | 3734 | else { |
0336b60e IZ |
3735 | if (ckWARN(WARN_UNINITIALIZED) |
3736 | && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) | |
29489e7c | 3737 | report_uninit(sv); |
a0d0e21e | 3738 | *lp = 0; |
25da4f38 IZ |
3739 | if (SvTYPE(sv) < SVt_PV) |
3740 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3741 | sv_upgrade(sv, SVt_PV); | |
73d840c0 | 3742 | return (char *)""; |
79072805 | 3743 | } |
463ee0b2 LW |
3744 | *lp = s - SvPVX(sv); |
3745 | SvCUR_set(sv, *lp); | |
79072805 | 3746 | SvPOK_on(sv); |
1d7c1841 GS |
3747 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3748 | PTR2UV(sv),SvPVX(sv))); | |
463ee0b2 | 3749 | return SvPVX(sv); |
a0d0e21e LW |
3750 | |
3751 | tokensave: | |
3752 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ | |
3753 | /* Sneaky stuff here */ | |
3754 | ||
3755 | tokensaveref: | |
46fc3d4c | 3756 | if (!tsv) |
96827780 | 3757 | tsv = newSVpv(tmpbuf, 0); |
46fc3d4c | 3758 | sv_2mortal(tsv); |
3759 | *lp = SvCUR(tsv); | |
3760 | return SvPVX(tsv); | |
a0d0e21e LW |
3761 | } |
3762 | else { | |
27da23d5 | 3763 | dVAR; |
a0d0e21e | 3764 | STRLEN len; |
73d840c0 | 3765 | const char *t; |
46fc3d4c | 3766 | |
3767 | if (tsv) { | |
3768 | sv_2mortal(tsv); | |
3769 | t = SvPVX(tsv); | |
3770 | len = SvCUR(tsv); | |
3771 | } | |
3772 | else { | |
96827780 MB |
3773 | t = tmpbuf; |
3774 | len = strlen(tmpbuf); | |
46fc3d4c | 3775 | } |
a0d0e21e | 3776 | #ifdef FIXNEGATIVEZERO |
46fc3d4c | 3777 | if (len == 2 && t[0] == '-' && t[1] == '0') { |
3778 | t = "0"; | |
3779 | len = 1; | |
3780 | } | |
a0d0e21e LW |
3781 | #endif |
3782 | (void)SvUPGRADE(sv, SVt_PV); | |
46fc3d4c | 3783 | *lp = len; |
a0d0e21e LW |
3784 | s = SvGROW(sv, len + 1); |
3785 | SvCUR_set(sv, len); | |
6bf554b4 | 3786 | SvPOKp_on(sv); |
e90e2364 | 3787 | return strcpy(s, t); |
a0d0e21e | 3788 | } |
463ee0b2 LW |
3789 | } |
3790 | ||
645c22ef | 3791 | /* |
6050d10e JP |
3792 | =for apidoc sv_copypv |
3793 | ||
3794 | Copies a stringified representation of the source SV into the | |
3795 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3796 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3797 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3798 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3799 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3800 | would lose the UTF-8'ness of the PV. |
3801 | ||
3802 | =cut | |
3803 | */ | |
3804 | ||
3805 | void | |
3806 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3807 | { | |
446eaa42 YST |
3808 | STRLEN len; |
3809 | char *s; | |
3810 | s = SvPV(ssv,len); | |
cb50f42d | 3811 | sv_setpvn(dsv,s,len); |
446eaa42 | 3812 | if (SvUTF8(ssv)) |
cb50f42d | 3813 | SvUTF8_on(dsv); |
446eaa42 | 3814 | else |
cb50f42d | 3815 | SvUTF8_off(dsv); |
6050d10e JP |
3816 | } |
3817 | ||
3818 | /* | |
645c22ef DM |
3819 | =for apidoc sv_2pvbyte_nolen |
3820 | ||
3821 | Return a pointer to the byte-encoded representation of the SV. | |
1e54db1a | 3822 | May cause the SV to be downgraded from UTF-8 as a side-effect. |
645c22ef DM |
3823 | |
3824 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3825 | ||
3826 | =cut | |
3827 | */ | |
3828 | ||
7340a771 GS |
3829 | char * |
3830 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
3831 | { | |
560a288e GS |
3832 | STRLEN n_a; |
3833 | return sv_2pvbyte(sv, &n_a); | |
7340a771 GS |
3834 | } |
3835 | ||
645c22ef DM |
3836 | /* |
3837 | =for apidoc sv_2pvbyte | |
3838 | ||
3839 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 3840 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
3841 | side-effect. |
3842 | ||
3843 | Usually accessed via the C<SvPVbyte> macro. | |
3844 | ||
3845 | =cut | |
3846 | */ | |
3847 | ||
7340a771 GS |
3848 | char * |
3849 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3850 | { | |
0875d2fe NIS |
3851 | sv_utf8_downgrade(sv,0); |
3852 | return SvPV(sv,*lp); | |
7340a771 GS |
3853 | } |
3854 | ||
645c22ef DM |
3855 | /* |
3856 | =for apidoc sv_2pvutf8_nolen | |
3857 | ||
1e54db1a JH |
3858 | Return a pointer to the UTF-8-encoded representation of the SV. |
3859 | May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3860 | |
3861 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3862 | ||
3863 | =cut | |
3864 | */ | |
3865 | ||
7340a771 GS |
3866 | char * |
3867 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
3868 | { | |
560a288e GS |
3869 | STRLEN n_a; |
3870 | return sv_2pvutf8(sv, &n_a); | |
7340a771 GS |
3871 | } |
3872 | ||
645c22ef DM |
3873 | /* |
3874 | =for apidoc sv_2pvutf8 | |
3875 | ||
1e54db1a JH |
3876 | Return a pointer to the UTF-8-encoded representation of the SV, and set *lp |
3877 | to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3878 | |
3879 | Usually accessed via the C<SvPVutf8> macro. | |
3880 | ||
3881 | =cut | |
3882 | */ | |
3883 | ||
7340a771 GS |
3884 | char * |
3885 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3886 | { | |
560a288e | 3887 | sv_utf8_upgrade(sv); |
7d59b7e4 | 3888 | return SvPV(sv,*lp); |
7340a771 | 3889 | } |
1c846c1f | 3890 | |
645c22ef DM |
3891 | /* |
3892 | =for apidoc sv_2bool | |
3893 | ||
3894 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3895 | sv_true() or its macro equivalent. |
645c22ef DM |
3896 | |
3897 | =cut | |
3898 | */ | |
3899 | ||
463ee0b2 | 3900 | bool |
864dbfa3 | 3901 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3902 | { |
8990e307 | 3903 | if (SvGMAGICAL(sv)) |
463ee0b2 LW |
3904 | mg_get(sv); |
3905 | ||
a0d0e21e LW |
3906 | if (!SvOK(sv)) |
3907 | return 0; | |
3908 | if (SvROK(sv)) { | |
a0d0e21e | 3909 | SV* tmpsv; |
1554e226 | 3910 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3911 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3912 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3913 | return SvRV(sv) != 0; |
3914 | } | |
463ee0b2 | 3915 | if (SvPOKp(sv)) { |
11343788 MB |
3916 | register XPV* Xpvtmp; |
3917 | if ((Xpvtmp = (XPV*)SvANY(sv)) && | |
3918 | (*Xpvtmp->xpv_pv > '0' || | |
3919 | Xpvtmp->xpv_cur > 1 || | |
3920 | (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0'))) | |
463ee0b2 LW |
3921 | return 1; |
3922 | else | |
3923 | return 0; | |
3924 | } | |
3925 | else { | |
3926 | if (SvIOKp(sv)) | |
3927 | return SvIVX(sv) != 0; | |
3928 | else { | |
3929 | if (SvNOKp(sv)) | |
3930 | return SvNVX(sv) != 0.0; | |
3931 | else | |
3932 | return FALSE; | |
3933 | } | |
3934 | } | |
79072805 LW |
3935 | } |
3936 | ||
09540bc3 JH |
3937 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
3938 | * this function provided for binary compatibility only | |
3939 | */ | |
3940 | ||
3941 | ||
3942 | STRLEN | |
3943 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
3944 | { | |
3945 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
3946 | } | |
3947 | ||
c461cf8f JH |
3948 | /* |
3949 | =for apidoc sv_utf8_upgrade | |
3950 | ||
78ea37eb | 3951 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3952 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3953 | Always sets the SvUTF8 flag to avoid future validity checks even |
3954 | if all the bytes have hibit clear. | |
c461cf8f | 3955 | |
13a6c0e0 JH |
3956 | This is not as a general purpose byte encoding to Unicode interface: |
3957 | use the Encode extension for that. | |
3958 | ||
8d6d96c1 HS |
3959 | =for apidoc sv_utf8_upgrade_flags |
3960 | ||
78ea37eb | 3961 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3962 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3963 | Always sets the SvUTF8 flag to avoid future validity checks even |
3964 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3965 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3966 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3967 | ||
13a6c0e0 JH |
3968 | This is not as a general purpose byte encoding to Unicode interface: |
3969 | use the Encode extension for that. | |
3970 | ||
8d6d96c1 HS |
3971 | =cut |
3972 | */ | |
3973 | ||
3974 | STRLEN | |
3975 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3976 | { | |
808c356f RGS |
3977 | if (sv == &PL_sv_undef) |
3978 | return 0; | |
e0e62c2a NIS |
3979 | if (!SvPOK(sv)) { |
3980 | STRLEN len = 0; | |
d52b7888 NC |
3981 | if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) { |
3982 | (void) sv_2pv_flags(sv,&len, flags); | |
3983 | if (SvUTF8(sv)) | |
3984 | return len; | |
3985 | } else { | |
3986 | (void) SvPV_force(sv,len); | |
3987 | } | |
e0e62c2a | 3988 | } |
4411f3b6 | 3989 | |
f5cee72b | 3990 | if (SvUTF8(sv)) { |
5fec3b1d | 3991 | return SvCUR(sv); |
f5cee72b | 3992 | } |
5fec3b1d | 3993 | |
765f542d NC |
3994 | if (SvIsCOW(sv)) { |
3995 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3996 | } |
3997 | ||
88632417 | 3998 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3999 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 4000 | else { /* Assume Latin-1/EBCDIC */ |
c4e7c712 NC |
4001 | /* This function could be much more efficient if we |
4002 | * had a FLAG in SVs to signal if there are any hibit | |
4003 | * chars in the PV. Given that there isn't such a flag | |
4004 | * make the loop as fast as possible. */ | |
4005 | U8 *s = (U8 *) SvPVX(sv); | |
4006 | U8 *e = (U8 *) SvEND(sv); | |
4007 | U8 *t = s; | |
4008 | int hibit = 0; | |
4009 | ||
4010 | while (t < e) { | |
4011 | U8 ch = *t++; | |
4012 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) | |
4013 | break; | |
4014 | } | |
4015 | if (hibit) { | |
4016 | STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */ | |
4017 | s = bytes_to_utf8((U8*)s, &len); | |
4018 | ||
4019 | SvPV_free(sv); /* No longer using what was there before. */ | |
4020 | ||
4021 | SvPV_set(sv, (char*)s); | |
4022 | SvCUR_set(sv, len - 1); | |
4023 | SvLEN_set(sv, len); /* No longer know the real size. */ | |
4024 | } | |
4025 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ | |
4026 | SvUTF8_on(sv); | |
560a288e | 4027 | } |
4411f3b6 | 4028 | return SvCUR(sv); |
560a288e GS |
4029 | } |
4030 | ||
c461cf8f JH |
4031 | /* |
4032 | =for apidoc sv_utf8_downgrade | |
4033 | ||
78ea37eb TS |
4034 | Attempts to convert the PV of an SV from characters to bytes. |
4035 | If the PV contains a character beyond byte, this conversion will fail; | |
4036 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
4037 | true, croaks. |
4038 | ||
13a6c0e0 JH |
4039 | This is not as a general purpose Unicode to byte encoding interface: |
4040 | use the Encode extension for that. | |
4041 | ||
c461cf8f JH |
4042 | =cut |
4043 | */ | |
4044 | ||
560a288e GS |
4045 | bool |
4046 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
4047 | { | |
78ea37eb | 4048 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 4049 | if (SvCUR(sv)) { |
03cfe0ae | 4050 | U8 *s; |
652088fc | 4051 | STRLEN len; |
fa301091 | 4052 | |
765f542d NC |
4053 | if (SvIsCOW(sv)) { |
4054 | sv_force_normal_flags(sv, 0); | |
4055 | } | |
03cfe0ae NIS |
4056 | s = (U8 *) SvPV(sv, len); |
4057 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
4058 | if (fail_ok) |
4059 | return FALSE; | |
4060 | else { | |
4061 | if (PL_op) | |
4062 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 4063 | OP_DESC(PL_op)); |
fa301091 JH |
4064 | else |
4065 | Perl_croak(aTHX_ "Wide character"); | |
4066 | } | |
4b3603a4 | 4067 | } |
b162af07 | 4068 | SvCUR_set(sv, len); |
67e989fb | 4069 | } |
560a288e | 4070 | } |
ffebcc3e | 4071 | SvUTF8_off(sv); |
560a288e GS |
4072 | return TRUE; |
4073 | } | |
4074 | ||
c461cf8f JH |
4075 | /* |
4076 | =for apidoc sv_utf8_encode | |
4077 | ||
78ea37eb TS |
4078 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
4079 | flag off so that it looks like octets again. | |
c461cf8f JH |
4080 | |
4081 | =cut | |
4082 | */ | |
4083 | ||
560a288e GS |
4084 | void |
4085 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
4086 | { | |
4411f3b6 | 4087 | (void) sv_utf8_upgrade(sv); |
4c94c214 NC |
4088 | if (SvIsCOW(sv)) { |
4089 | sv_force_normal_flags(sv, 0); | |
4090 | } | |
4091 | if (SvREADONLY(sv)) { | |
4092 | Perl_croak(aTHX_ PL_no_modify); | |
4093 | } | |
560a288e GS |
4094 | SvUTF8_off(sv); |
4095 | } | |
4096 | ||
4411f3b6 NIS |
4097 | /* |
4098 | =for apidoc sv_utf8_decode | |
4099 | ||
78ea37eb TS |
4100 | If the PV of the SV is an octet sequence in UTF-8 |
4101 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
4102 | so that it looks like a character. If the PV contains only single-byte | |
4103 | characters, the C<SvUTF8> flag stays being off. | |
4104 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
4105 | |
4106 | =cut | |
4107 | */ | |
4108 | ||
560a288e GS |
4109 | bool |
4110 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
4111 | { | |
78ea37eb | 4112 | if (SvPOKp(sv)) { |
63cd0674 NIS |
4113 | U8 *c; |
4114 | U8 *e; | |
9cbac4c7 | 4115 | |
645c22ef DM |
4116 | /* The octets may have got themselves encoded - get them back as |
4117 | * bytes | |
4118 | */ | |
4119 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
4120 | return FALSE; |
4121 | ||
4122 | /* it is actually just a matter of turning the utf8 flag on, but | |
4123 | * we want to make sure everything inside is valid utf8 first. | |
4124 | */ | |
63cd0674 NIS |
4125 | c = (U8 *) SvPVX(sv); |
4126 | if (!is_utf8_string(c, SvCUR(sv)+1)) | |
67e989fb | 4127 | return FALSE; |
63cd0674 | 4128 | e = (U8 *) SvEND(sv); |
511c2ff0 | 4129 | while (c < e) { |
c4d5f83a NIS |
4130 | U8 ch = *c++; |
4131 | if (!UTF8_IS_INVARIANT(ch)) { | |
67e989fb JH |
4132 | SvUTF8_on(sv); |
4133 | break; | |
4134 | } | |
560a288e | 4135 | } |
560a288e GS |
4136 | } |
4137 | return TRUE; | |
4138 | } | |
4139 | ||
09540bc3 JH |
4140 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); |
4141 | * this function provided for binary compatibility only | |
4142 | */ | |
4143 | ||
4144 | void | |
4145 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
4146 | { | |
4147 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
4148 | } | |
4149 | ||
954c1994 GS |
4150 | /* |
4151 | =for apidoc sv_setsv | |
4152 | ||
645c22ef DM |
4153 | Copies the contents of the source SV C<ssv> into the destination SV |
4154 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4155 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4156 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4157 | content of the destination. | |
4158 | ||
4159 | You probably want to use one of the assortment of wrappers, such as | |
4160 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4161 | C<SvSetMagicSV_nosteal>. | |
4162 | ||
8d6d96c1 HS |
4163 | =for apidoc sv_setsv_flags |
4164 | ||
645c22ef DM |
4165 | Copies the contents of the source SV C<ssv> into the destination SV |
4166 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4167 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4168 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4169 | content of the destination. | |
4170 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
5fcdf167 NC |
4171 | C<ssv> if appropriate, else not. If the C<flags> parameter has the |
4172 | C<NOSTEAL> bit set then the buffers of temps will not be stolen. <sv_setsv> | |
4173 | and C<sv_setsv_nomg> are implemented in terms of this function. | |
645c22ef DM |
4174 | |
4175 | You probably want to use one of the assortment of wrappers, such as | |
4176 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4177 | C<SvSetMagicSV_nosteal>. | |
4178 | ||
4179 | This is the primary function for copying scalars, and most other | |
4180 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
4181 | |
4182 | =cut | |
4183 | */ | |
4184 | ||
4185 | void | |
4186 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
4187 | { | |
8990e307 LW |
4188 | register U32 sflags; |
4189 | register int dtype; | |
4190 | register int stype; | |
463ee0b2 | 4191 | |
79072805 LW |
4192 | if (sstr == dstr) |
4193 | return; | |
765f542d | 4194 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 4195 | if (!sstr) |
3280af22 | 4196 | sstr = &PL_sv_undef; |
8990e307 LW |
4197 | stype = SvTYPE(sstr); |
4198 | dtype = SvTYPE(dstr); | |
79072805 | 4199 | |
a0d0e21e | 4200 | SvAMAGIC_off(dstr); |
7a5fa8a2 | 4201 | if ( SvVOK(dstr) ) |
ece467f9 JP |
4202 | { |
4203 | /* need to nuke the magic */ | |
4204 | mg_free(dstr); | |
4205 | SvRMAGICAL_off(dstr); | |
4206 | } | |
9e7bc3e8 | 4207 | |
463ee0b2 | 4208 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 4209 | |
8990e307 | 4210 | switch (stype) { |
79072805 | 4211 | case SVt_NULL: |
aece5585 | 4212 | undef_sstr: |
20408e3c GS |
4213 | if (dtype != SVt_PVGV) { |
4214 | (void)SvOK_off(dstr); | |
4215 | return; | |
4216 | } | |
4217 | break; | |
463ee0b2 | 4218 | case SVt_IV: |
aece5585 GA |
4219 | if (SvIOK(sstr)) { |
4220 | switch (dtype) { | |
4221 | case SVt_NULL: | |
8990e307 | 4222 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
4223 | break; |
4224 | case SVt_NV: | |
8990e307 | 4225 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4226 | break; |
4227 | case SVt_RV: | |
4228 | case SVt_PV: | |
a0d0e21e | 4229 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
4230 | break; |
4231 | } | |
4232 | (void)SvIOK_only(dstr); | |
45977657 | 4233 | SvIV_set(dstr, SvIVX(sstr)); |
25da4f38 IZ |
4234 | if (SvIsUV(sstr)) |
4235 | SvIsUV_on(dstr); | |
27c9684d AP |
4236 | if (SvTAINTED(sstr)) |
4237 | SvTAINT(dstr); | |
aece5585 | 4238 | return; |
8990e307 | 4239 | } |
aece5585 GA |
4240 | goto undef_sstr; |
4241 | ||
463ee0b2 | 4242 | case SVt_NV: |
aece5585 GA |
4243 | if (SvNOK(sstr)) { |
4244 | switch (dtype) { | |
4245 | case SVt_NULL: | |
4246 | case SVt_IV: | |
8990e307 | 4247 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
4248 | break; |
4249 | case SVt_RV: | |
4250 | case SVt_PV: | |
4251 | case SVt_PVIV: | |
a0d0e21e | 4252 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4253 | break; |
4254 | } | |
9d6ce603 | 4255 | SvNV_set(dstr, SvNVX(sstr)); |
aece5585 | 4256 | (void)SvNOK_only(dstr); |
27c9684d AP |
4257 | if (SvTAINTED(sstr)) |
4258 | SvTAINT(dstr); | |
aece5585 | 4259 | return; |
8990e307 | 4260 | } |
aece5585 GA |
4261 | goto undef_sstr; |
4262 | ||
ed6116ce | 4263 | case SVt_RV: |
8990e307 | 4264 | if (dtype < SVt_RV) |
ed6116ce | 4265 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 4266 | else if (dtype == SVt_PVGV && |
23bb1b96 | 4267 | SvROK(sstr) && SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
c07a80fd | 4268 | sstr = SvRV(sstr); |
a5f75d66 | 4269 | if (sstr == dstr) { |
1d7c1841 GS |
4270 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4271 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4272 | { | |
a5f75d66 | 4273 | GvIMPORTED_on(dstr); |
1d7c1841 | 4274 | } |
a5f75d66 AD |
4275 | GvMULTI_on(dstr); |
4276 | return; | |
4277 | } | |
c07a80fd | 4278 | goto glob_assign; |
4279 | } | |
ed6116ce | 4280 | break; |
fc36a67e | 4281 | case SVt_PVFM: |
d89fc664 NC |
4282 | #ifdef PERL_COPY_ON_WRITE |
4283 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
4284 | if (dtype < SVt_PVIV) | |
4285 | sv_upgrade(dstr, SVt_PVIV); | |
4286 | break; | |
4287 | } | |
4288 | /* Fall through */ | |
4289 | #endif | |
4290 | case SVt_PV: | |
8990e307 | 4291 | if (dtype < SVt_PV) |
463ee0b2 | 4292 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
4293 | break; |
4294 | case SVt_PVIV: | |
8990e307 | 4295 | if (dtype < SVt_PVIV) |
463ee0b2 | 4296 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
4297 | break; |
4298 | case SVt_PVNV: | |
8990e307 | 4299 | if (dtype < SVt_PVNV) |
463ee0b2 | 4300 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 4301 | break; |
4633a7c4 LW |
4302 | case SVt_PVAV: |
4303 | case SVt_PVHV: | |
4304 | case SVt_PVCV: | |
4633a7c4 | 4305 | case SVt_PVIO: |
a3b680e6 AL |
4306 | { |
4307 | const char * const type = sv_reftype(sstr,0); | |
533c011a | 4308 | if (PL_op) |
a3b680e6 | 4309 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", type, OP_NAME(PL_op)); |
4633a7c4 | 4310 | else |
a3b680e6 AL |
4311 | Perl_croak(aTHX_ "Bizarre copy of %s", type); |
4312 | } | |
4633a7c4 LW |
4313 | break; |
4314 | ||
79072805 | 4315 | case SVt_PVGV: |
8990e307 | 4316 | if (dtype <= SVt_PVGV) { |
c07a80fd | 4317 | glob_assign: |
a5f75d66 | 4318 | if (dtype != SVt_PVGV) { |
a3b680e6 AL |
4319 | const char * const name = GvNAME(sstr); |
4320 | const STRLEN len = GvNAMELEN(sstr); | |
b76195c2 DM |
4321 | /* don't upgrade SVt_PVLV: it can hold a glob */ |
4322 | if (dtype != SVt_PVLV) | |
4323 | sv_upgrade(dstr, SVt_PVGV); | |
14befaf4 | 4324 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 4325 | GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr)); |
a0d0e21e LW |
4326 | GvNAME(dstr) = savepvn(name, len); |
4327 | GvNAMELEN(dstr) = len; | |
4328 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
4329 | } | |
7bac28a0 | 4330 | /* ahem, death to those who redefine active sort subs */ |
3280af22 NIS |
4331 | else if (PL_curstackinfo->si_type == PERLSI_SORT |
4332 | && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr))) | |
cea2e8a9 | 4333 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", |
7bac28a0 | 4334 | GvNAME(dstr)); |
5bd07a3d | 4335 | |
7fb37951 AMS |
4336 | #ifdef GV_UNIQUE_CHECK |
4337 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4338 | Perl_croak(aTHX_ PL_no_modify); |
4339 | } | |
4340 | #endif | |
4341 | ||
a0d0e21e | 4342 | (void)SvOK_off(dstr); |
a5f75d66 | 4343 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 4344 | gp_free((GV*)dstr); |
79072805 | 4345 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
4346 | if (SvTAINTED(sstr)) |
4347 | SvTAINT(dstr); | |
1d7c1841 GS |
4348 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4349 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4350 | { | |
a5f75d66 | 4351 | GvIMPORTED_on(dstr); |
1d7c1841 | 4352 | } |
a5f75d66 | 4353 | GvMULTI_on(dstr); |
79072805 LW |
4354 | return; |
4355 | } | |
4356 | /* FALL THROUGH */ | |
4357 | ||
4358 | default: | |
8d6d96c1 | 4359 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 4360 | mg_get(sstr); |
eb160463 | 4361 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
4362 | stype = SvTYPE(sstr); |
4363 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
4364 | goto glob_assign; | |
4365 | } | |
4366 | } | |
ded42b9f | 4367 | if (stype == SVt_PVLV) |
6fc92669 | 4368 | (void)SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 4369 | else |
eb160463 | 4370 | (void)SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
4371 | } |
4372 | ||
8990e307 LW |
4373 | sflags = SvFLAGS(sstr); |
4374 | ||
4375 | if (sflags & SVf_ROK) { | |
4376 | if (dtype >= SVt_PV) { | |
4377 | if (dtype == SVt_PVGV) { | |
4378 | SV *sref = SvREFCNT_inc(SvRV(sstr)); | |
4379 | SV *dref = 0; | |
a3b680e6 | 4380 | const int intro = GvINTRO(dstr); |
a0d0e21e | 4381 | |
7fb37951 AMS |
4382 | #ifdef GV_UNIQUE_CHECK |
4383 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4384 | Perl_croak(aTHX_ PL_no_modify); |
4385 | } | |
4386 | #endif | |
4387 | ||
a0d0e21e | 4388 | if (intro) { |
a5f75d66 | 4389 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 4390 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 4391 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 4392 | } |
a5f75d66 | 4393 | GvMULTI_on(dstr); |
8990e307 LW |
4394 | switch (SvTYPE(sref)) { |
4395 | case SVt_PVAV: | |
a0d0e21e | 4396 | if (intro) |
890ed176 | 4397 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
4398 | else |
4399 | dref = (SV*)GvAV(dstr); | |
8990e307 | 4400 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 4401 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
4402 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4403 | { | |
a5f75d66 | 4404 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 4405 | } |
8990e307 LW |
4406 | break; |
4407 | case SVt_PVHV: | |
a0d0e21e | 4408 | if (intro) |
890ed176 | 4409 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
4410 | else |
4411 | dref = (SV*)GvHV(dstr); | |
8990e307 | 4412 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 4413 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
4414 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4415 | { | |
a5f75d66 | 4416 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 4417 | } |
8990e307 LW |
4418 | break; |
4419 | case SVt_PVCV: | |
8ebc5c01 | 4420 | if (intro) { |
4421 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
4422 | SvREFCNT_dec(GvCV(dstr)); | |
4423 | GvCV(dstr) = Nullcv; | |
68dc0745 | 4424 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 4425 | PL_sub_generation++; |
8ebc5c01 | 4426 | } |
890ed176 | 4427 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 4428 | } |
68dc0745 | 4429 | else |
4430 | dref = (SV*)GvCV(dstr); | |
4431 | if (GvCV(dstr) != (CV*)sref) { | |
748a9306 | 4432 | CV* cv = GvCV(dstr); |
4633a7c4 | 4433 | if (cv) { |
68dc0745 | 4434 | if (!GvCVGEN((GV*)dstr) && |
4435 | (CvROOT(cv) || CvXSUB(cv))) | |
4436 | { | |
7bac28a0 | 4437 | /* ahem, death to those who redefine |
4438 | * active sort subs */ | |
3280af22 NIS |
4439 | if (PL_curstackinfo->si_type == PERLSI_SORT && |
4440 | PL_sortcop == CvSTART(cv)) | |
1c846c1f | 4441 | Perl_croak(aTHX_ |
7bac28a0 | 4442 | "Can't redefine active sort subroutine %s", |
4443 | GvENAME((GV*)dstr)); | |
beab0874 JT |
4444 | /* Redefining a sub - warning is mandatory if |
4445 | it was a const and its value changed. */ | |
4446 | if (ckWARN(WARN_REDEFINE) | |
4447 | || (CvCONST(cv) | |
4448 | && (!CvCONST((CV*)sref) | |
4449 | || sv_cmp(cv_const_sv(cv), | |
4450 | cv_const_sv((CV*)sref))))) | |
4451 | { | |
9014280d | 4452 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 4453 | CvCONST(cv) |
910764e6 RGS |
4454 | ? "Constant subroutine %s::%s redefined" |
4455 | : "Subroutine %s::%s redefined", | |
4456 | HvNAME(GvSTASH((GV*)dstr)), | |
beab0874 JT |
4457 | GvENAME((GV*)dstr)); |
4458 | } | |
9607fc9c | 4459 | } |
fb24441d RGS |
4460 | if (!intro) |
4461 | cv_ckproto(cv, (GV*)dstr, | |
4462 | SvPOK(sref) ? SvPVX(sref) : Nullch); | |
4633a7c4 | 4463 | } |
a5f75d66 | 4464 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 4465 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 4466 | GvASSUMECV_on(dstr); |
3280af22 | 4467 | PL_sub_generation++; |
a5f75d66 | 4468 | } |
39bac7f7 | 4469 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
4470 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4471 | { | |
a5f75d66 | 4472 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 4473 | } |
8990e307 | 4474 | break; |
91bba347 LW |
4475 | case SVt_PVIO: |
4476 | if (intro) | |
890ed176 | 4477 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
4478 | else |
4479 | dref = (SV*)GvIOp(dstr); | |
4480 | GvIOp(dstr) = (IO*)sref; | |
4481 | break; | |
f4d13ee9 JH |
4482 | case SVt_PVFM: |
4483 | if (intro) | |
890ed176 | 4484 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
4485 | else |
4486 | dref = (SV*)GvFORM(dstr); | |
4487 | GvFORM(dstr) = (CV*)sref; | |
4488 | break; | |
8990e307 | 4489 | default: |
a0d0e21e | 4490 | if (intro) |
890ed176 | 4491 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
4492 | else |
4493 | dref = (SV*)GvSV(dstr); | |
8990e307 | 4494 | GvSV(dstr) = sref; |
39bac7f7 | 4495 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
4496 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4497 | { | |
a5f75d66 | 4498 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 4499 | } |
8990e307 LW |
4500 | break; |
4501 | } | |
4502 | if (dref) | |
4503 | SvREFCNT_dec(dref); | |
27c9684d AP |
4504 | if (SvTAINTED(sstr)) |
4505 | SvTAINT(dstr); | |
8990e307 LW |
4506 | return; |
4507 | } | |
a0d0e21e | 4508 | if (SvPVX(dstr)) { |
8bd4d4c5 | 4509 | SvPV_free(dstr); |
b162af07 SP |
4510 | SvLEN_set(dstr, 0); |
4511 | SvCUR_set(dstr, 0); | |
a0d0e21e | 4512 | } |
8990e307 | 4513 | } |
a0d0e21e | 4514 | (void)SvOK_off(dstr); |
b162af07 | 4515 | SvRV_set(dstr, SvREFCNT_inc(SvRV(sstr))); |
ed6116ce | 4516 | SvROK_on(dstr); |
8990e307 | 4517 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4518 | SvNOKp_on(dstr); |
4519 | /* Only set the public OK flag if the source has public OK. */ | |
4520 | if (sflags & SVf_NOK) | |
4521 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 4522 | SvNV_set(dstr, SvNVX(sstr)); |
ed6116ce | 4523 | } |
8990e307 | 4524 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4525 | (void)SvIOKp_on(dstr); |
4526 | if (sflags & SVf_IOK) | |
4527 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4528 | if (sflags & SVf_IVisUV) |
25da4f38 | 4529 | SvIsUV_on(dstr); |
45977657 | 4530 | SvIV_set(dstr, SvIVX(sstr)); |
ed6116ce | 4531 | } |
a0d0e21e LW |
4532 | if (SvAMAGIC(sstr)) { |
4533 | SvAMAGIC_on(dstr); | |
4534 | } | |
ed6116ce | 4535 | } |
8990e307 | 4536 | else if (sflags & SVp_POK) { |
765f542d | 4537 | bool isSwipe = 0; |
79072805 LW |
4538 | |
4539 | /* | |
4540 | * Check to see if we can just swipe the string. If so, it's a | |
4541 | * possible small lose on short strings, but a big win on long ones. | |
463ee0b2 LW |
4542 | * It might even be a win on short strings if SvPVX(dstr) |
4543 | * has to be allocated and SvPVX(sstr) has to be freed. | |
79072805 LW |
4544 | */ |
4545 | ||
120fac95 NC |
4546 | /* Whichever path we take through the next code, we want this true, |
4547 | and doing it now facilitates the COW check. */ | |
4548 | (void)SvPOK_only(dstr); | |
4549 | ||
765f542d NC |
4550 | if ( |
4551 | #ifdef PERL_COPY_ON_WRITE | |
4552 | (sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
4553 | && | |
4554 | #endif | |
4555 | !(isSwipe = | |
4556 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
4557 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
5fcdf167 NC |
4558 | (!(flags & SV_NOSTEAL)) && |
4559 | /* and we're allowed to steal temps */ | |
765f542d NC |
4560 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ |
4561 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 4562 | /* and won't be needed again, potentially */ |
765f542d NC |
4563 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
4564 | #ifdef PERL_COPY_ON_WRITE | |
4565 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS | |
120fac95 | 4566 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS |
765f542d NC |
4567 | && SvTYPE(sstr) >= SVt_PVIV) |
4568 | #endif | |
4569 | ) { | |
4570 | /* Failed the swipe test, and it's not a shared hash key either. | |
4571 | Have to copy the string. */ | |
4572 | STRLEN len = SvCUR(sstr); | |
4573 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
4574 | Move(SvPVX(sstr),SvPVX(dstr),len,char); | |
4575 | SvCUR_set(dstr, len); | |
4576 | *SvEND(dstr) = '\0'; | |
765f542d NC |
4577 | } else { |
4578 | /* If PERL_COPY_ON_WRITE is not defined, then isSwipe will always | |
4579 | be true in here. */ | |
4580 | #ifdef PERL_COPY_ON_WRITE | |
4581 | /* Either it's a shared hash key, or it's suitable for | |
4582 | copy-on-write or we can swipe the string. */ | |
46187eeb | 4583 | if (DEBUG_C_TEST) { |
ed252734 | 4584 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
4585 | sv_dump(sstr); |
4586 | sv_dump(dstr); | |
46187eeb | 4587 | } |
765f542d NC |
4588 | if (!isSwipe) { |
4589 | /* I believe I should acquire a global SV mutex if | |
4590 | it's a COW sv (not a shared hash key) to stop | |
4591 | it going un copy-on-write. | |
4592 | If the source SV has gone un copy on write between up there | |
4593 | and down here, then (assert() that) it is of the correct | |
4594 | form to make it copy on write again */ | |
4595 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
4596 | != (SVf_FAKE | SVf_READONLY)) { | |
4597 | SvREADONLY_on(sstr); | |
4598 | SvFAKE_on(sstr); | |
4599 | /* Make the source SV into a loop of 1. | |
4600 | (about to become 2) */ | |
a29f6d03 | 4601 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
4602 | } |
4603 | } | |
4604 | #endif | |
4605 | /* Initial code is common. */ | |
adbc6bb1 | 4606 | if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */ |
a5f75d66 AD |
4607 | if (SvOOK(dstr)) { |
4608 | SvFLAGS(dstr) &= ~SVf_OOK; | |
4609 | Safefree(SvPVX(dstr) - SvIVX(dstr)); | |
4610 | } | |
50483b2c | 4611 | else if (SvLEN(dstr)) |
a5f75d66 | 4612 | Safefree(SvPVX(dstr)); |
79072805 | 4613 | } |
765f542d NC |
4614 | |
4615 | #ifdef PERL_COPY_ON_WRITE | |
4616 | if (!isSwipe) { | |
4617 | /* making another shared SV. */ | |
4618 | STRLEN cur = SvCUR(sstr); | |
4619 | STRLEN len = SvLEN(sstr); | |
d89fc664 | 4620 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4621 | if (len) { |
4622 | /* SvIsCOW_normal */ | |
4623 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4624 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4625 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
765f542d NC |
4626 | SvPV_set(dstr, SvPVX(sstr)); |
4627 | } else { | |
4628 | /* SvIsCOW_shared_hash */ | |
4629 | UV hash = SvUVX(sstr); | |
46187eeb NC |
4630 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4631 | "Copy on write: Sharing hash\n")); | |
765f542d NC |
4632 | SvPV_set(dstr, |
4633 | sharepvn(SvPVX(sstr), | |
4634 | (sflags & SVf_UTF8?-cur:cur), hash)); | |
607fa7f2 | 4635 | SvUV_set(dstr, hash); |
765f542d | 4636 | } |
87a1ef3d SP |
4637 | SvLEN_set(dstr, len); |
4638 | SvCUR_set(dstr, cur); | |
765f542d NC |
4639 | SvREADONLY_on(dstr); |
4640 | SvFAKE_on(dstr); | |
4641 | /* Relesase a global SV mutex. */ | |
4642 | } | |
4643 | else | |
4644 | #endif | |
4645 | { /* Passes the swipe test. */ | |
4646 | SvPV_set(dstr, SvPVX(sstr)); | |
4647 | SvLEN_set(dstr, SvLEN(sstr)); | |
4648 | SvCUR_set(dstr, SvCUR(sstr)); | |
4649 | ||
4650 | SvTEMP_off(dstr); | |
4651 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4652 | SvPV_set(sstr, Nullch); | |
4653 | SvLEN_set(sstr, 0); | |
4654 | SvCUR_set(sstr, 0); | |
4655 | SvTEMP_off(sstr); | |
4656 | } | |
4657 | } | |
9aa983d2 | 4658 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4659 | SvUTF8_on(dstr); |
79072805 | 4660 | /*SUPPRESS 560*/ |
8990e307 | 4661 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4662 | SvNOKp_on(dstr); |
4663 | if (sflags & SVf_NOK) | |
4664 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 4665 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 | 4666 | } |
8990e307 | 4667 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4668 | (void)SvIOKp_on(dstr); |
4669 | if (sflags & SVf_IOK) | |
4670 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4671 | if (sflags & SVf_IVisUV) |
25da4f38 | 4672 | SvIsUV_on(dstr); |
45977657 | 4673 | SvIV_set(dstr, SvIVX(sstr)); |
79072805 | 4674 | } |
92f0c265 | 4675 | if (SvVOK(sstr)) { |
7a5fa8a2 | 4676 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
ece467f9 JP |
4677 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, |
4678 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4679 | SvRMAGICAL_on(dstr); |
7a5fa8a2 | 4680 | } |
79072805 | 4681 | } |
8990e307 | 4682 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4683 | if (sflags & SVf_IOK) |
4684 | (void)SvIOK_only(dstr); | |
4685 | else { | |
9cbac4c7 DM |
4686 | (void)SvOK_off(dstr); |
4687 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4688 | } |
4689 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4690 | if (sflags & SVf_IVisUV) |
25da4f38 | 4691 | SvIsUV_on(dstr); |
45977657 | 4692 | SvIV_set(dstr, SvIVX(sstr)); |
3332b3c1 JH |
4693 | if (sflags & SVp_NOK) { |
4694 | if (sflags & SVf_NOK) | |
4695 | (void)SvNOK_on(dstr); | |
4696 | else | |
4697 | (void)SvNOKp_on(dstr); | |
9d6ce603 | 4698 | SvNV_set(dstr, SvNVX(sstr)); |
3332b3c1 JH |
4699 | } |
4700 | } | |
4701 | else if (sflags & SVp_NOK) { | |
4702 | if (sflags & SVf_NOK) | |
4703 | (void)SvNOK_only(dstr); | |
4704 | else { | |
9cbac4c7 | 4705 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4706 | SvNOKp_on(dstr); |
4707 | } | |
9d6ce603 | 4708 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 LW |
4709 | } |
4710 | else { | |
20408e3c | 4711 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4712 | if (ckWARN(WARN_MISC)) |
9014280d | 4713 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4714 | } |
4715 | else | |
4716 | (void)SvOK_off(dstr); | |
a0d0e21e | 4717 | } |
27c9684d AP |
4718 | if (SvTAINTED(sstr)) |
4719 | SvTAINT(dstr); | |
79072805 LW |
4720 | } |
4721 | ||
954c1994 GS |
4722 | /* |
4723 | =for apidoc sv_setsv_mg | |
4724 | ||
4725 | Like C<sv_setsv>, but also handles 'set' magic. | |
4726 | ||
4727 | =cut | |
4728 | */ | |
4729 | ||
79072805 | 4730 | void |
864dbfa3 | 4731 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4732 | { |
4733 | sv_setsv(dstr,sstr); | |
4734 | SvSETMAGIC(dstr); | |
4735 | } | |
4736 | ||
ed252734 NC |
4737 | #ifdef PERL_COPY_ON_WRITE |
4738 | SV * | |
4739 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4740 | { | |
4741 | STRLEN cur = SvCUR(sstr); | |
4742 | STRLEN len = SvLEN(sstr); | |
4743 | register char *new_pv; | |
4744 | ||
4745 | if (DEBUG_C_TEST) { | |
4746 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4747 | sstr, dstr); | |
4748 | sv_dump(sstr); | |
4749 | if (dstr) | |
4750 | sv_dump(dstr); | |
4751 | } | |
4752 | ||
4753 | if (dstr) { | |
4754 | if (SvTHINKFIRST(dstr)) | |
4755 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
4756 | else if (SvPVX(dstr)) | |
4757 | Safefree(SvPVX(dstr)); | |
4758 | } | |
4759 | else | |
4760 | new_SV(dstr); | |
b988aa42 | 4761 | (void)SvUPGRADE (dstr, SVt_PVIV); |
ed252734 NC |
4762 | |
4763 | assert (SvPOK(sstr)); | |
4764 | assert (SvPOKp(sstr)); | |
4765 | assert (!SvIOK(sstr)); | |
4766 | assert (!SvIOKp(sstr)); | |
4767 | assert (!SvNOK(sstr)); | |
4768 | assert (!SvNOKp(sstr)); | |
4769 | ||
4770 | if (SvIsCOW(sstr)) { | |
4771 | ||
4772 | if (SvLEN(sstr) == 0) { | |
4773 | /* source is a COW shared hash key. */ | |
4774 | UV hash = SvUVX(sstr); | |
4775 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4776 | "Fast copy on write: Sharing hash\n")); | |
607fa7f2 | 4777 | SvUV_set(dstr, hash); |
ed252734 NC |
4778 | new_pv = sharepvn(SvPVX(sstr), (SvUTF8(sstr)?-cur:cur), hash); |
4779 | goto common_exit; | |
4780 | } | |
4781 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4782 | } else { | |
4783 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
b988aa42 | 4784 | (void)SvUPGRADE (sstr, SVt_PVIV); |
ed252734 NC |
4785 | SvREADONLY_on(sstr); |
4786 | SvFAKE_on(sstr); | |
4787 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4788 | "Fast copy on write: Converting sstr to COW\n")); | |
4789 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4790 | } | |
4791 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
4792 | new_pv = SvPVX(sstr); | |
4793 | ||
4794 | common_exit: | |
4795 | SvPV_set(dstr, new_pv); | |
4796 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4797 | if (SvUTF8(sstr)) | |
4798 | SvUTF8_on(dstr); | |
87a1ef3d SP |
4799 | SvLEN_set(dstr, len); |
4800 | SvCUR_set(dstr, cur); | |
ed252734 NC |
4801 | if (DEBUG_C_TEST) { |
4802 | sv_dump(dstr); | |
4803 | } | |
4804 | return dstr; | |
4805 | } | |
4806 | #endif | |
4807 | ||
954c1994 GS |
4808 | /* |
4809 | =for apidoc sv_setpvn | |
4810 | ||
4811 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
4812 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
4813 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
4814 | |
4815 | =cut | |
4816 | */ | |
4817 | ||
ef50df4b | 4818 | void |
864dbfa3 | 4819 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4820 | { |
c6f8c383 | 4821 | register char *dptr; |
22c522df | 4822 | |
765f542d | 4823 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4824 | if (!ptr) { |
a0d0e21e | 4825 | (void)SvOK_off(sv); |
463ee0b2 LW |
4826 | return; |
4827 | } | |
22c522df JH |
4828 | else { |
4829 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
a3b680e6 | 4830 | const IV iv = len; |
9c5ffd7c JH |
4831 | if (iv < 0) |
4832 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4833 | } |
6fc92669 | 4834 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4835 | |
79072805 | 4836 | SvGROW(sv, len + 1); |
c6f8c383 GA |
4837 | dptr = SvPVX(sv); |
4838 | Move(ptr,dptr,len,char); | |
4839 | dptr[len] = '\0'; | |
79072805 | 4840 | SvCUR_set(sv, len); |
1aa99e6b | 4841 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4842 | SvTAINT(sv); |
79072805 LW |
4843 | } |
4844 | ||
954c1994 GS |
4845 | /* |
4846 | =for apidoc sv_setpvn_mg | |
4847 | ||
4848 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4849 | ||
4850 | =cut | |
4851 | */ | |
4852 | ||
79072805 | 4853 | void |
864dbfa3 | 4854 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4855 | { |
4856 | sv_setpvn(sv,ptr,len); | |
4857 | SvSETMAGIC(sv); | |
4858 | } | |
4859 | ||
954c1994 GS |
4860 | /* |
4861 | =for apidoc sv_setpv | |
4862 | ||
4863 | Copies a string into an SV. The string must be null-terminated. Does not | |
4864 | handle 'set' magic. See C<sv_setpv_mg>. | |
4865 | ||
4866 | =cut | |
4867 | */ | |
4868 | ||
ef50df4b | 4869 | void |
864dbfa3 | 4870 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4871 | { |
4872 | register STRLEN len; | |
4873 | ||
765f542d | 4874 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4875 | if (!ptr) { |
a0d0e21e | 4876 | (void)SvOK_off(sv); |
463ee0b2 LW |
4877 | return; |
4878 | } | |
79072805 | 4879 | len = strlen(ptr); |
6fc92669 | 4880 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4881 | |
79072805 | 4882 | SvGROW(sv, len + 1); |
463ee0b2 | 4883 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4884 | SvCUR_set(sv, len); |
1aa99e6b | 4885 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4886 | SvTAINT(sv); |
4887 | } | |
4888 | ||
954c1994 GS |
4889 | /* |
4890 | =for apidoc sv_setpv_mg | |
4891 | ||
4892 | Like C<sv_setpv>, but also handles 'set' magic. | |
4893 | ||
4894 | =cut | |
4895 | */ | |
4896 | ||
463ee0b2 | 4897 | void |
864dbfa3 | 4898 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4899 | { |
4900 | sv_setpv(sv,ptr); | |
4901 | SvSETMAGIC(sv); | |
4902 | } | |
4903 | ||
954c1994 GS |
4904 | /* |
4905 | =for apidoc sv_usepvn | |
4906 | ||
4907 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4908 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4909 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4910 | string length, C<len>, must be supplied. This function will realloc the | |
4911 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4912 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4913 | See C<sv_usepvn_mg>. | |
4914 | ||
4915 | =cut | |
4916 | */ | |
4917 | ||
ef50df4b | 4918 | void |
864dbfa3 | 4919 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4920 | { |
765f542d | 4921 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
c6f8c383 | 4922 | (void)SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4923 | if (!ptr) { |
a0d0e21e | 4924 | (void)SvOK_off(sv); |
463ee0b2 LW |
4925 | return; |
4926 | } | |
8bd4d4c5 NC |
4927 | if (SvPVX(sv)) |
4928 | SvPV_free(sv); | |
463ee0b2 | 4929 | Renew(ptr, len+1, char); |
f880fe2f | 4930 | SvPV_set(sv, ptr); |
463ee0b2 LW |
4931 | SvCUR_set(sv, len); |
4932 | SvLEN_set(sv, len+1); | |
4933 | *SvEND(sv) = '\0'; | |
1aa99e6b | 4934 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4935 | SvTAINT(sv); |
79072805 LW |
4936 | } |
4937 | ||
954c1994 GS |
4938 | /* |
4939 | =for apidoc sv_usepvn_mg | |
4940 | ||
4941 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4942 | ||
4943 | =cut | |
4944 | */ | |
4945 | ||
ef50df4b | 4946 | void |
864dbfa3 | 4947 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4948 | { |
51c1089b | 4949 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4950 | SvSETMAGIC(sv); |
4951 | } | |
4952 | ||
765f542d NC |
4953 | #ifdef PERL_COPY_ON_WRITE |
4954 | /* Need to do this *after* making the SV normal, as we need the buffer | |
4955 | pointer to remain valid until after we've copied it. If we let go too early, | |
4956 | another thread could invalidate it by unsharing last of the same hash key | |
4957 | (which it can do by means other than releasing copy-on-write Svs) | |
4958 | or by changing the other copy-on-write SVs in the loop. */ | |
4959 | STATIC void | |
4960 | S_sv_release_COW(pTHX_ register SV *sv, char *pvx, STRLEN cur, STRLEN len, | |
4961 | U32 hash, SV *after) | |
4962 | { | |
4963 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4964 | /* we need to find the SV pointing to us. */ | |
4965 | SV *current = SV_COW_NEXT_SV(after); | |
7a5fa8a2 | 4966 | |
765f542d NC |
4967 | if (current == sv) { |
4968 | /* The SV we point to points back to us (there were only two of us | |
4969 | in the loop.) | |
4970 | Hence other SV is no longer copy on write either. */ | |
4971 | SvFAKE_off(after); | |
4972 | SvREADONLY_off(after); | |
4973 | } else { | |
4974 | /* We need to follow the pointers around the loop. */ | |
4975 | SV *next; | |
4976 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4977 | assert (next); | |
4978 | current = next; | |
4979 | /* don't loop forever if the structure is bust, and we have | |
4980 | a pointer into a closed loop. */ | |
4981 | assert (current != after); | |
e419cbc5 | 4982 | assert (SvPVX(current) == pvx); |
765f542d NC |
4983 | } |
4984 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4985 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4986 | } |
4987 | } else { | |
4988 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)cur : cur, hash); | |
4989 | } | |
4990 | } | |
4991 | ||
4992 | int | |
4993 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4994 | { | |
4995 | if (SvIsCOW(sv)) | |
4996 | sv_force_normal_flags(sv, 0); | |
0c34ef67 MHM |
4997 | SvOOK_off(sv); |
4998 | return 0; | |
765f542d NC |
4999 | } |
5000 | #endif | |
645c22ef DM |
5001 | /* |
5002 | =for apidoc sv_force_normal_flags | |
5003 | ||
5004 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
5005 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
5006 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
5007 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
5008 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
5009 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 5010 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
5011 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
5012 | with flags set to 0. | |
645c22ef DM |
5013 | |
5014 | =cut | |
5015 | */ | |
5016 | ||
6fc92669 | 5017 | void |
840a7b70 | 5018 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 5019 | { |
765f542d NC |
5020 | #ifdef PERL_COPY_ON_WRITE |
5021 | if (SvREADONLY(sv)) { | |
5022 | /* At this point I believe I should acquire a global SV mutex. */ | |
5023 | if (SvFAKE(sv)) { | |
5024 | char *pvx = SvPVX(sv); | |
5025 | STRLEN len = SvLEN(sv); | |
5026 | STRLEN cur = SvCUR(sv); | |
5027 | U32 hash = SvUVX(sv); | |
5028 | SV *next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ | |
46187eeb NC |
5029 | if (DEBUG_C_TEST) { |
5030 | PerlIO_printf(Perl_debug_log, | |
5031 | "Copy on write: Force normal %ld\n", | |
5032 | (long) flags); | |
e419cbc5 | 5033 | sv_dump(sv); |
46187eeb | 5034 | } |
765f542d NC |
5035 | SvFAKE_off(sv); |
5036 | SvREADONLY_off(sv); | |
5037 | /* This SV doesn't own the buffer, so need to New() a new one: */ | |
f880fe2f | 5038 | SvPV_set(sv, (char*)0); |
87a1ef3d | 5039 | SvLEN_set(sv, 0); |
765f542d NC |
5040 | if (flags & SV_COW_DROP_PV) { |
5041 | /* OK, so we don't need to copy our buffer. */ | |
5042 | SvPOK_off(sv); | |
5043 | } else { | |
5044 | SvGROW(sv, cur + 1); | |
5045 | Move(pvx,SvPVX(sv),cur,char); | |
87a1ef3d | 5046 | SvCUR_set(sv, cur); |
765f542d NC |
5047 | *SvEND(sv) = '\0'; |
5048 | } | |
e419cbc5 | 5049 | sv_release_COW(sv, pvx, cur, len, hash, next); |
46187eeb | 5050 | if (DEBUG_C_TEST) { |
e419cbc5 | 5051 | sv_dump(sv); |
46187eeb | 5052 | } |
765f542d | 5053 | } |
923e4eb5 | 5054 | else if (IN_PERL_RUNTIME) |
765f542d NC |
5055 | Perl_croak(aTHX_ PL_no_modify); |
5056 | /* At this point I believe that I can drop the global SV mutex. */ | |
5057 | } | |
5058 | #else | |
2213622d | 5059 | if (SvREADONLY(sv)) { |
1c846c1f NIS |
5060 | if (SvFAKE(sv)) { |
5061 | char *pvx = SvPVX(sv); | |
5c98da1c | 5062 | int is_utf8 = SvUTF8(sv); |
1c846c1f NIS |
5063 | STRLEN len = SvCUR(sv); |
5064 | U32 hash = SvUVX(sv); | |
10bcdfd6 NC |
5065 | SvFAKE_off(sv); |
5066 | SvREADONLY_off(sv); | |
f880fe2f | 5067 | SvPV_set(sv, (char*)0); |
b162af07 | 5068 | SvLEN_set(sv, 0); |
1c846c1f NIS |
5069 | SvGROW(sv, len + 1); |
5070 | Move(pvx,SvPVX(sv),len,char); | |
5071 | *SvEND(sv) = '\0'; | |
5c98da1c | 5072 | unsharepvn(pvx, is_utf8 ? -(I32)len : len, hash); |
1c846c1f | 5073 | } |
923e4eb5 | 5074 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 5075 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 5076 | } |
765f542d | 5077 | #endif |
2213622d | 5078 | if (SvROK(sv)) |
840a7b70 | 5079 | sv_unref_flags(sv, flags); |
6fc92669 GS |
5080 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
5081 | sv_unglob(sv); | |
0f15f207 | 5082 | } |
1c846c1f | 5083 | |
645c22ef DM |
5084 | /* |
5085 | =for apidoc sv_force_normal | |
5086 | ||
5087 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
5088 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
5089 | an xpvmg. See also C<sv_force_normal_flags>. | |
5090 | ||
5091 | =cut | |
5092 | */ | |
5093 | ||
840a7b70 IZ |
5094 | void |
5095 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
5096 | { | |
5097 | sv_force_normal_flags(sv, 0); | |
5098 | } | |
5099 | ||
954c1994 GS |
5100 | /* |
5101 | =for apidoc sv_chop | |
5102 | ||
1c846c1f | 5103 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
5104 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
5105 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 5106 | string. Uses the "OOK hack". |
31869a79 AE |
5107 | Beware: after this function returns, C<ptr> and SvPVX(sv) may no longer |
5108 | refer to the same chunk of data. | |
954c1994 GS |
5109 | |
5110 | =cut | |
5111 | */ | |
5112 | ||
79072805 | 5113 | void |
f54cb97a | 5114 | Perl_sv_chop(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
5115 | { |
5116 | register STRLEN delta; | |
a0d0e21e | 5117 | if (!ptr || !SvPOKp(sv)) |
79072805 | 5118 | return; |
31869a79 | 5119 | delta = ptr - SvPVX(sv); |
2213622d | 5120 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
5121 | if (SvTYPE(sv) < SVt_PVIV) |
5122 | sv_upgrade(sv,SVt_PVIV); | |
5123 | ||
5124 | if (!SvOOK(sv)) { | |
50483b2c | 5125 | if (!SvLEN(sv)) { /* make copy of shared string */ |
f54cb97a | 5126 | const char *pvx = SvPVX(sv); |
50483b2c JD |
5127 | STRLEN len = SvCUR(sv); |
5128 | SvGROW(sv, len + 1); | |
5129 | Move(pvx,SvPVX(sv),len,char); | |
5130 | *SvEND(sv) = '\0'; | |
5131 | } | |
45977657 | 5132 | SvIV_set(sv, 0); |
a4bfb290 AB |
5133 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
5134 | and we do that anyway inside the SvNIOK_off | |
5135 | */ | |
7a5fa8a2 | 5136 | SvFLAGS(sv) |= SVf_OOK; |
79072805 | 5137 | } |
a4bfb290 | 5138 | SvNIOK_off(sv); |
b162af07 SP |
5139 | SvLEN_set(sv, SvLEN(sv) - delta); |
5140 | SvCUR_set(sv, SvCUR(sv) - delta); | |
f880fe2f | 5141 | SvPV_set(sv, SvPVX(sv) + delta); |
45977657 | 5142 | SvIV_set(sv, SvIVX(sv) + delta); |
79072805 LW |
5143 | } |
5144 | ||
09540bc3 JH |
5145 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); |
5146 | * this function provided for binary compatibility only | |
5147 | */ | |
5148 | ||
5149 | void | |
5150 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
5151 | { | |
5152 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
5153 | } | |
5154 | ||
954c1994 GS |
5155 | /* |
5156 | =for apidoc sv_catpvn | |
5157 | ||
5158 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5159 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5160 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 5161 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 5162 | |
8d6d96c1 HS |
5163 | =for apidoc sv_catpvn_flags |
5164 | ||
5165 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5166 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5167 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
5168 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
5169 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
5170 | in terms of this function. | |
5171 | ||
5172 | =cut | |
5173 | */ | |
5174 | ||
5175 | void | |
5176 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
5177 | { | |
5178 | STRLEN dlen; | |
f54cb97a | 5179 | const char *dstr = SvPV_force_flags(dsv, dlen, flags); |
8d6d96c1 | 5180 | |
8d6d96c1 HS |
5181 | SvGROW(dsv, dlen + slen + 1); |
5182 | if (sstr == dstr) | |
5183 | sstr = SvPVX(dsv); | |
5184 | Move(sstr, SvPVX(dsv) + dlen, slen, char); | |
b162af07 | 5185 | SvCUR_set(dsv, SvCUR(dsv) + slen); |
8d6d96c1 HS |
5186 | *SvEND(dsv) = '\0'; |
5187 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
5188 | SvTAINT(dsv); | |
79072805 LW |
5189 | } |
5190 | ||
954c1994 GS |
5191 | /* |
5192 | =for apidoc sv_catpvn_mg | |
5193 | ||
5194 | Like C<sv_catpvn>, but also handles 'set' magic. | |
5195 | ||
5196 | =cut | |
5197 | */ | |
5198 | ||
79072805 | 5199 | void |
864dbfa3 | 5200 | Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
5201 | { |
5202 | sv_catpvn(sv,ptr,len); | |
5203 | SvSETMAGIC(sv); | |
5204 | } | |
5205 | ||
09540bc3 JH |
5206 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); |
5207 | * this function provided for binary compatibility only | |
5208 | */ | |
5209 | ||
5210 | void | |
5211 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
5212 | { | |
5213 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
5214 | } | |
5215 | ||
954c1994 GS |
5216 | /* |
5217 | =for apidoc sv_catsv | |
5218 | ||
13e8c8e3 JH |
5219 | Concatenates the string from SV C<ssv> onto the end of the string in |
5220 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
5221 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 5222 | |
8d6d96c1 HS |
5223 | =for apidoc sv_catsv_flags |
5224 | ||
5225 | Concatenates the string from SV C<ssv> onto the end of the string in | |
5226 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
5227 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
5228 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
5229 | ||
5230 | =cut */ | |
5231 | ||
ef50df4b | 5232 | void |
8d6d96c1 | 5233 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 5234 | { |
13e8c8e3 JH |
5235 | char *spv; |
5236 | STRLEN slen; | |
46199a12 | 5237 | if (!ssv) |
79072805 | 5238 | return; |
46199a12 | 5239 | if ((spv = SvPV(ssv, slen))) { |
4fd84b44 AD |
5240 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
5241 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
8cf8f3d1 NIS |
5242 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously |
5243 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4fd84b44 AD |
5244 | dsv->sv_flags doesn't have that bit set. |
5245 | Andy Dougherty 12 Oct 2001 | |
5246 | */ | |
5247 | I32 sutf8 = DO_UTF8(ssv); | |
5248 | I32 dutf8; | |
13e8c8e3 | 5249 | |
8d6d96c1 HS |
5250 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
5251 | mg_get(dsv); | |
5252 | dutf8 = DO_UTF8(dsv); | |
5253 | ||
5254 | if (dutf8 != sutf8) { | |
13e8c8e3 | 5255 | if (dutf8) { |
46199a12 | 5256 | /* Not modifying source SV, so taking a temporary copy. */ |
8d6d96c1 | 5257 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 5258 | |
46199a12 | 5259 | sv_utf8_upgrade(csv); |
8d6d96c1 | 5260 | spv = SvPV(csv, slen); |
13e8c8e3 | 5261 | } |
8d6d96c1 HS |
5262 | else |
5263 | sv_utf8_upgrade_nomg(dsv); | |
e84ff256 | 5264 | } |
8d6d96c1 | 5265 | sv_catpvn_nomg(dsv, spv, slen); |
560a288e | 5266 | } |
79072805 LW |
5267 | } |
5268 | ||
954c1994 GS |
5269 | /* |
5270 | =for apidoc sv_catsv_mg | |
5271 | ||
5272 | Like C<sv_catsv>, but also handles 'set' magic. | |
5273 | ||
5274 | =cut | |
5275 | */ | |
5276 | ||
79072805 | 5277 | void |
46199a12 | 5278 | Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv) |
ef50df4b | 5279 | { |
46199a12 JH |
5280 | sv_catsv(dsv,ssv); |
5281 | SvSETMAGIC(dsv); | |
ef50df4b GS |
5282 | } |
5283 | ||
954c1994 GS |
5284 | /* |
5285 | =for apidoc sv_catpv | |
5286 | ||
5287 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
5288 | If the SV has the UTF-8 status set, then the bytes appended should be |
5289 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 5290 | |
d5ce4a7c | 5291 | =cut */ |
954c1994 | 5292 | |
ef50df4b | 5293 | void |
0c981600 | 5294 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
5295 | { |
5296 | register STRLEN len; | |
463ee0b2 | 5297 | STRLEN tlen; |
748a9306 | 5298 | char *junk; |
79072805 | 5299 | |
0c981600 | 5300 | if (!ptr) |
79072805 | 5301 | return; |
748a9306 | 5302 | junk = SvPV_force(sv, tlen); |
0c981600 | 5303 | len = strlen(ptr); |
463ee0b2 | 5304 | SvGROW(sv, tlen + len + 1); |
0c981600 JH |
5305 | if (ptr == junk) |
5306 | ptr = SvPVX(sv); | |
5307 | Move(ptr,SvPVX(sv)+tlen,len+1,char); | |
b162af07 | 5308 | SvCUR_set(sv, SvCUR(sv) + len); |
d41ff1b8 | 5309 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 5310 | SvTAINT(sv); |
79072805 LW |
5311 | } |
5312 | ||
954c1994 GS |
5313 | /* |
5314 | =for apidoc sv_catpv_mg | |
5315 | ||
5316 | Like C<sv_catpv>, but also handles 'set' magic. | |
5317 | ||
5318 | =cut | |
5319 | */ | |
5320 | ||
ef50df4b | 5321 | void |
0c981600 | 5322 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 5323 | { |
0c981600 | 5324 | sv_catpv(sv,ptr); |
ef50df4b GS |
5325 | SvSETMAGIC(sv); |
5326 | } | |
5327 | ||
645c22ef DM |
5328 | /* |
5329 | =for apidoc newSV | |
5330 | ||
5331 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
5332 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
5333 | macro. | |
5334 | ||
5335 | =cut | |
5336 | */ | |
5337 | ||
79072805 | 5338 | SV * |
864dbfa3 | 5339 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
5340 | { |
5341 | register SV *sv; | |
1c846c1f | 5342 | |
4561caa4 | 5343 | new_SV(sv); |
79072805 LW |
5344 | if (len) { |
5345 | sv_upgrade(sv, SVt_PV); | |
5346 | SvGROW(sv, len + 1); | |
5347 | } | |
5348 | return sv; | |
5349 | } | |
954c1994 | 5350 | /* |
92110913 | 5351 | =for apidoc sv_magicext |
954c1994 | 5352 | |
68795e93 | 5353 | Adds magic to an SV, upgrading it if necessary. Applies the |
2d8d5d5a | 5354 | supplied vtable and returns a pointer to the magic added. |
92110913 | 5355 | |
2d8d5d5a SH |
5356 | Note that C<sv_magicext> will allow things that C<sv_magic> will not. |
5357 | In particular, you can add magic to SvREADONLY SVs, and add more than | |
5358 | one instance of the same 'how'. | |
645c22ef | 5359 | |
2d8d5d5a SH |
5360 | If C<namlen> is greater than zero then a C<savepvn> I<copy> of C<name> is |
5361 | stored, if C<namlen> is zero then C<name> is stored as-is and - as another | |
5362 | special case - if C<(name && namlen == HEf_SVKEY)> then C<name> is assumed | |
5363 | to contain an C<SV*> and is stored as-is with its REFCNT incremented. | |
92110913 | 5364 | |
2d8d5d5a | 5365 | (This is now used as a subroutine by C<sv_magic>.) |
954c1994 GS |
5366 | |
5367 | =cut | |
5368 | */ | |
92110913 | 5369 | MAGIC * |
e1ec3a88 | 5370 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, const MGVTBL *vtable, |
92110913 | 5371 | const char* name, I32 namlen) |
79072805 LW |
5372 | { |
5373 | MAGIC* mg; | |
68795e93 | 5374 | |
92110913 NIS |
5375 | if (SvTYPE(sv) < SVt_PVMG) { |
5376 | (void)SvUPGRADE(sv, SVt_PVMG); | |
463ee0b2 | 5377 | } |
79072805 LW |
5378 | Newz(702,mg, 1, MAGIC); |
5379 | mg->mg_moremagic = SvMAGIC(sv); | |
b162af07 | 5380 | SvMAGIC_set(sv, mg); |
75f9d97a | 5381 | |
05f95b08 SB |
5382 | /* Sometimes a magic contains a reference loop, where the sv and |
5383 | object refer to each other. To prevent a reference loop that | |
5384 | would prevent such objects being freed, we look for such loops | |
5385 | and if we find one we avoid incrementing the object refcount. | |
87f0b213 JH |
5386 | |
5387 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 5388 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
5389 | |
5390 | */ | |
14befaf4 DM |
5391 | if (!obj || obj == sv || |
5392 | how == PERL_MAGIC_arylen || | |
5393 | how == PERL_MAGIC_qr || | |
75f9d97a JH |
5394 | (SvTYPE(obj) == SVt_PVGV && |
5395 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
5396 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 5397 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 5398 | { |
8990e307 | 5399 | mg->mg_obj = obj; |
75f9d97a | 5400 | } |
85e6fe83 | 5401 | else { |
8990e307 | 5402 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
5403 | mg->mg_flags |= MGf_REFCOUNTED; |
5404 | } | |
b5ccf5f2 YST |
5405 | |
5406 | /* Normal self-ties simply pass a null object, and instead of | |
5407 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
5408 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
5409 | with an RV obj pointing to the glob containing the PVIO. In | |
5410 | this case, to avoid a reference loop, we need to weaken the | |
5411 | reference. | |
5412 | */ | |
5413 | ||
5414 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
5415 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
5416 | { | |
5417 | sv_rvweaken(obj); | |
5418 | } | |
5419 | ||
79072805 | 5420 | mg->mg_type = how; |
565764a8 | 5421 | mg->mg_len = namlen; |
9cbac4c7 | 5422 | if (name) { |
92110913 | 5423 | if (namlen > 0) |
1edc1566 | 5424 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 5425 | else if (namlen == HEf_SVKEY) |
1edc1566 | 5426 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 5427 | else |
92110913 | 5428 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 5429 | } |
92110913 | 5430 | mg->mg_virtual = vtable; |
68795e93 | 5431 | |
92110913 NIS |
5432 | mg_magical(sv); |
5433 | if (SvGMAGICAL(sv)) | |
5434 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
5435 | return mg; | |
5436 | } | |
5437 | ||
5438 | /* | |
5439 | =for apidoc sv_magic | |
1c846c1f | 5440 | |
92110913 NIS |
5441 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
5442 | then adds a new magic item of type C<how> to the head of the magic list. | |
5443 | ||
2d8d5d5a SH |
5444 | See C<sv_magicext> (which C<sv_magic> now calls) for a description of the |
5445 | handling of the C<name> and C<namlen> arguments. | |
5446 | ||
4509d3fb SB |
5447 | You need to use C<sv_magicext> to add magic to SvREADONLY SVs and also |
5448 | to add more than one instance of the same 'how'. | |
5449 | ||
92110913 NIS |
5450 | =cut |
5451 | */ | |
5452 | ||
5453 | void | |
5454 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 5455 | { |
e1ec3a88 | 5456 | const MGVTBL *vtable = 0; |
92110913 | 5457 | MAGIC* mg; |
92110913 | 5458 | |
765f542d NC |
5459 | #ifdef PERL_COPY_ON_WRITE |
5460 | if (SvIsCOW(sv)) | |
5461 | sv_force_normal_flags(sv, 0); | |
5462 | #endif | |
92110913 | 5463 | if (SvREADONLY(sv)) { |
923e4eb5 | 5464 | if (IN_PERL_RUNTIME |
92110913 NIS |
5465 | && how != PERL_MAGIC_regex_global |
5466 | && how != PERL_MAGIC_bm | |
5467 | && how != PERL_MAGIC_fm | |
5468 | && how != PERL_MAGIC_sv | |
e6469971 | 5469 | && how != PERL_MAGIC_backref |
92110913 NIS |
5470 | ) |
5471 | { | |
5472 | Perl_croak(aTHX_ PL_no_modify); | |
5473 | } | |
5474 | } | |
5475 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
5476 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
5477 | /* sv_magic() refuses to add a magic of the same 'how' as an |
5478 | existing one | |
92110913 NIS |
5479 | */ |
5480 | if (how == PERL_MAGIC_taint) | |
5481 | mg->mg_len |= 1; | |
5482 | return; | |
5483 | } | |
5484 | } | |
68795e93 | 5485 | |
79072805 | 5486 | switch (how) { |
14befaf4 | 5487 | case PERL_MAGIC_sv: |
92110913 | 5488 | vtable = &PL_vtbl_sv; |
79072805 | 5489 | break; |
14befaf4 | 5490 | case PERL_MAGIC_overload: |
92110913 | 5491 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 5492 | break; |
14befaf4 | 5493 | case PERL_MAGIC_overload_elem: |
92110913 | 5494 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 5495 | break; |
14befaf4 | 5496 | case PERL_MAGIC_overload_table: |
92110913 | 5497 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 5498 | break; |
14befaf4 | 5499 | case PERL_MAGIC_bm: |
92110913 | 5500 | vtable = &PL_vtbl_bm; |
79072805 | 5501 | break; |
14befaf4 | 5502 | case PERL_MAGIC_regdata: |
92110913 | 5503 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 5504 | break; |
14befaf4 | 5505 | case PERL_MAGIC_regdatum: |
92110913 | 5506 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 5507 | break; |
14befaf4 | 5508 | case PERL_MAGIC_env: |
92110913 | 5509 | vtable = &PL_vtbl_env; |
79072805 | 5510 | break; |
14befaf4 | 5511 | case PERL_MAGIC_fm: |
92110913 | 5512 | vtable = &PL_vtbl_fm; |
55497cff | 5513 | break; |
14befaf4 | 5514 | case PERL_MAGIC_envelem: |
92110913 | 5515 | vtable = &PL_vtbl_envelem; |
79072805 | 5516 | break; |
14befaf4 | 5517 | case PERL_MAGIC_regex_global: |
92110913 | 5518 | vtable = &PL_vtbl_mglob; |
93a17b20 | 5519 | break; |
14befaf4 | 5520 | case PERL_MAGIC_isa: |
92110913 | 5521 | vtable = &PL_vtbl_isa; |
463ee0b2 | 5522 | break; |
14befaf4 | 5523 | case PERL_MAGIC_isaelem: |
92110913 | 5524 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 5525 | break; |
14befaf4 | 5526 | case PERL_MAGIC_nkeys: |
92110913 | 5527 | vtable = &PL_vtbl_nkeys; |
16660edb | 5528 | break; |
14befaf4 | 5529 | case PERL_MAGIC_dbfile: |
92110913 | 5530 | vtable = 0; |
93a17b20 | 5531 | break; |
14befaf4 | 5532 | case PERL_MAGIC_dbline: |
92110913 | 5533 | vtable = &PL_vtbl_dbline; |
79072805 | 5534 | break; |
36477c24 | 5535 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 5536 | case PERL_MAGIC_collxfrm: |
92110913 | 5537 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 5538 | break; |
36477c24 | 5539 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 5540 | case PERL_MAGIC_tied: |
92110913 | 5541 | vtable = &PL_vtbl_pack; |
463ee0b2 | 5542 | break; |
14befaf4 DM |
5543 | case PERL_MAGIC_tiedelem: |
5544 | case PERL_MAGIC_tiedscalar: | |
92110913 | 5545 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 5546 | break; |
14befaf4 | 5547 | case PERL_MAGIC_qr: |
92110913 | 5548 | vtable = &PL_vtbl_regexp; |
c277df42 | 5549 | break; |
14befaf4 | 5550 | case PERL_MAGIC_sig: |
92110913 | 5551 | vtable = &PL_vtbl_sig; |
79072805 | 5552 | break; |
14befaf4 | 5553 | case PERL_MAGIC_sigelem: |
92110913 | 5554 | vtable = &PL_vtbl_sigelem; |
79072805 | 5555 | break; |
14befaf4 | 5556 | case PERL_MAGIC_taint: |
92110913 | 5557 | vtable = &PL_vtbl_taint; |
463ee0b2 | 5558 | break; |
14befaf4 | 5559 | case PERL_MAGIC_uvar: |
92110913 | 5560 | vtable = &PL_vtbl_uvar; |
79072805 | 5561 | break; |
14befaf4 | 5562 | case PERL_MAGIC_vec: |
92110913 | 5563 | vtable = &PL_vtbl_vec; |
79072805 | 5564 | break; |
ece467f9 JP |
5565 | case PERL_MAGIC_vstring: |
5566 | vtable = 0; | |
5567 | break; | |
7e8c5dac HS |
5568 | case PERL_MAGIC_utf8: |
5569 | vtable = &PL_vtbl_utf8; | |
5570 | break; | |
14befaf4 | 5571 | case PERL_MAGIC_substr: |
92110913 | 5572 | vtable = &PL_vtbl_substr; |
79072805 | 5573 | break; |
14befaf4 | 5574 | case PERL_MAGIC_defelem: |
92110913 | 5575 | vtable = &PL_vtbl_defelem; |
5f05dabc | 5576 | break; |
14befaf4 | 5577 | case PERL_MAGIC_glob: |
92110913 | 5578 | vtable = &PL_vtbl_glob; |
79072805 | 5579 | break; |
14befaf4 | 5580 | case PERL_MAGIC_arylen: |
92110913 | 5581 | vtable = &PL_vtbl_arylen; |
79072805 | 5582 | break; |
14befaf4 | 5583 | case PERL_MAGIC_pos: |
92110913 | 5584 | vtable = &PL_vtbl_pos; |
a0d0e21e | 5585 | break; |
14befaf4 | 5586 | case PERL_MAGIC_backref: |
92110913 | 5587 | vtable = &PL_vtbl_backref; |
810b8aa5 | 5588 | break; |
14befaf4 DM |
5589 | case PERL_MAGIC_ext: |
5590 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
5591 | /* Useful for attaching extension internal data to perl vars. */ |
5592 | /* Note that multiple extensions may clash if magical scalars */ | |
5593 | /* etc holding private data from one are passed to another. */ | |
a0d0e21e | 5594 | break; |
79072805 | 5595 | default: |
14befaf4 | 5596 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 5597 | } |
68795e93 | 5598 | |
92110913 | 5599 | /* Rest of work is done else where */ |
27da23d5 | 5600 | mg = sv_magicext(sv,obj,how,(MGVTBL*)vtable,name,namlen); |
68795e93 | 5601 | |
92110913 NIS |
5602 | switch (how) { |
5603 | case PERL_MAGIC_taint: | |
5604 | mg->mg_len = 1; | |
5605 | break; | |
5606 | case PERL_MAGIC_ext: | |
5607 | case PERL_MAGIC_dbfile: | |
5608 | SvRMAGICAL_on(sv); | |
5609 | break; | |
5610 | } | |
463ee0b2 LW |
5611 | } |
5612 | ||
c461cf8f JH |
5613 | /* |
5614 | =for apidoc sv_unmagic | |
5615 | ||
645c22ef | 5616 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
5617 | |
5618 | =cut | |
5619 | */ | |
5620 | ||
463ee0b2 | 5621 | int |
864dbfa3 | 5622 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
5623 | { |
5624 | MAGIC* mg; | |
5625 | MAGIC** mgp; | |
91bba347 | 5626 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
5627 | return 0; |
5628 | mgp = &SvMAGIC(sv); | |
5629 | for (mg = *mgp; mg; mg = *mgp) { | |
5630 | if (mg->mg_type == type) { | |
e1ec3a88 | 5631 | const MGVTBL* const vtbl = mg->mg_virtual; |
463ee0b2 | 5632 | *mgp = mg->mg_moremagic; |
1d7c1841 | 5633 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 5634 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 5635 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 5636 | if (mg->mg_len > 0) |
1edc1566 | 5637 | Safefree(mg->mg_ptr); |
565764a8 | 5638 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 5639 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
5640 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
5641 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 5642 | } |
a0d0e21e LW |
5643 | if (mg->mg_flags & MGf_REFCOUNTED) |
5644 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5645 | Safefree(mg); |
5646 | } | |
5647 | else | |
5648 | mgp = &mg->mg_moremagic; | |
79072805 | 5649 | } |
91bba347 | 5650 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5651 | SvMAGICAL_off(sv); |
06759ea0 | 5652 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5653 | } |
5654 | ||
5655 | return 0; | |
79072805 LW |
5656 | } |
5657 | ||
c461cf8f JH |
5658 | /* |
5659 | =for apidoc sv_rvweaken | |
5660 | ||
645c22ef DM |
5661 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5662 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5663 | push a back-reference to this RV onto the array of backreferences | |
5664 | associated with that magic. | |
c461cf8f JH |
5665 | |
5666 | =cut | |
5667 | */ | |
5668 | ||
810b8aa5 | 5669 | SV * |
864dbfa3 | 5670 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5671 | { |
5672 | SV *tsv; | |
5673 | if (!SvOK(sv)) /* let undefs pass */ | |
5674 | return sv; | |
5675 | if (!SvROK(sv)) | |
cea2e8a9 | 5676 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5677 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5678 | if (ckWARN(WARN_MISC)) |
9014280d | 5679 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5680 | return sv; |
5681 | } | |
5682 | tsv = SvRV(sv); | |
5683 | sv_add_backref(tsv, sv); | |
5684 | SvWEAKREF_on(sv); | |
1c846c1f | 5685 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5686 | return sv; |
5687 | } | |
5688 | ||
645c22ef DM |
5689 | /* Give tsv backref magic if it hasn't already got it, then push a |
5690 | * back-reference to sv onto the array associated with the backref magic. | |
5691 | */ | |
5692 | ||
810b8aa5 | 5693 | STATIC void |
cea2e8a9 | 5694 | S_sv_add_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5695 | { |
5696 | AV *av; | |
5697 | MAGIC *mg; | |
14befaf4 | 5698 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5699 | av = (AV*)mg->mg_obj; |
5700 | else { | |
5701 | av = newAV(); | |
14befaf4 | 5702 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
d99b02a1 DM |
5703 | /* av now has a refcnt of 2, which avoids it getting freed |
5704 | * before us during global cleanup. The extra ref is removed | |
5705 | * by magic_killbackrefs() when tsv is being freed */ | |
810b8aa5 | 5706 | } |
d91d49e8 | 5707 | if (AvFILLp(av) >= AvMAX(av)) { |
fdc9a813 | 5708 | I32 i; |
d91d49e8 | 5709 | SV **svp = AvARRAY(av); |
fdc9a813 AE |
5710 | for (i = AvFILLp(av); i >= 0; i--) |
5711 | if (!svp[i]) { | |
d91d49e8 MM |
5712 | svp[i] = sv; /* reuse the slot */ |
5713 | return; | |
5714 | } | |
d91d49e8 MM |
5715 | av_extend(av, AvFILLp(av)+1); |
5716 | } | |
5717 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5718 | } |
5719 | ||
645c22ef DM |
5720 | /* delete a back-reference to ourselves from the backref magic associated |
5721 | * with the SV we point to. | |
5722 | */ | |
5723 | ||
1c846c1f | 5724 | STATIC void |
cea2e8a9 | 5725 | S_sv_del_backref(pTHX_ SV *sv) |
810b8aa5 GS |
5726 | { |
5727 | AV *av; | |
5728 | SV **svp; | |
5729 | I32 i; | |
5730 | SV *tsv = SvRV(sv); | |
c04a4dfe | 5731 | MAGIC *mg = NULL; |
14befaf4 | 5732 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5733 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5734 | av = (AV *)mg->mg_obj; |
5735 | svp = AvARRAY(av); | |
fdc9a813 AE |
5736 | for (i = AvFILLp(av); i >= 0; i--) |
5737 | if (svp[i] == sv) svp[i] = Nullsv; | |
810b8aa5 GS |
5738 | } |
5739 | ||
954c1994 GS |
5740 | /* |
5741 | =for apidoc sv_insert | |
5742 | ||
5743 | Inserts a string at the specified offset/length within the SV. Similar to | |
5744 | the Perl substr() function. | |
5745 | ||
5746 | =cut | |
5747 | */ | |
5748 | ||
79072805 | 5749 | void |
e1ec3a88 | 5750 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, const char *little, STRLEN littlelen) |
79072805 LW |
5751 | { |
5752 | register char *big; | |
5753 | register char *mid; | |
5754 | register char *midend; | |
5755 | register char *bigend; | |
5756 | register I32 i; | |
6ff81951 | 5757 | STRLEN curlen; |
1c846c1f | 5758 | |
79072805 | 5759 | |
8990e307 | 5760 | if (!bigstr) |
cea2e8a9 | 5761 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5762 | SvPV_force(bigstr, curlen); |
60fa28ff | 5763 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5764 | if (offset + len > curlen) { |
5765 | SvGROW(bigstr, offset+len+1); | |
5766 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); | |
5767 | SvCUR_set(bigstr, offset+len); | |
5768 | } | |
79072805 | 5769 | |
69b47968 | 5770 | SvTAINT(bigstr); |
79072805 LW |
5771 | i = littlelen - len; |
5772 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5773 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5774 | mid = big + offset + len; |
5775 | midend = bigend = big + SvCUR(bigstr); | |
5776 | bigend += i; | |
5777 | *bigend = '\0'; | |
5778 | while (midend > mid) /* shove everything down */ | |
5779 | *--bigend = *--midend; | |
5780 | Move(little,big+offset,littlelen,char); | |
b162af07 | 5781 | SvCUR_set(bigstr, SvCUR(bigstr) + i); |
79072805 LW |
5782 | SvSETMAGIC(bigstr); |
5783 | return; | |
5784 | } | |
5785 | else if (i == 0) { | |
463ee0b2 | 5786 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5787 | SvSETMAGIC(bigstr); |
5788 | return; | |
5789 | } | |
5790 | ||
463ee0b2 | 5791 | big = SvPVX(bigstr); |
79072805 LW |
5792 | mid = big + offset; |
5793 | midend = mid + len; | |
5794 | bigend = big + SvCUR(bigstr); | |
5795 | ||
5796 | if (midend > bigend) | |
cea2e8a9 | 5797 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5798 | |
5799 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5800 | if (littlelen) { | |
5801 | Move(little, mid, littlelen,char); | |
5802 | mid += littlelen; | |
5803 | } | |
5804 | i = bigend - midend; | |
5805 | if (i > 0) { | |
5806 | Move(midend, mid, i,char); | |
5807 | mid += i; | |
5808 | } | |
5809 | *mid = '\0'; | |
5810 | SvCUR_set(bigstr, mid - big); | |
5811 | } | |
5812 | /*SUPPRESS 560*/ | |
155aba94 | 5813 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5814 | midend -= littlelen; |
5815 | mid = midend; | |
5816 | sv_chop(bigstr,midend-i); | |
5817 | big += i; | |
5818 | while (i--) | |
5819 | *--midend = *--big; | |
5820 | if (littlelen) | |
5821 | Move(little, mid, littlelen,char); | |
5822 | } | |
5823 | else if (littlelen) { | |
5824 | midend -= littlelen; | |
5825 | sv_chop(bigstr,midend); | |
5826 | Move(little,midend,littlelen,char); | |
5827 | } | |
5828 | else { | |
5829 | sv_chop(bigstr,midend); | |
5830 | } | |
5831 | SvSETMAGIC(bigstr); | |
5832 | } | |
5833 | ||
c461cf8f JH |
5834 | /* |
5835 | =for apidoc sv_replace | |
5836 | ||
5837 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5838 | The target SV physically takes over ownership of the body of the source SV |
5839 | and inherits its flags; however, the target keeps any magic it owns, | |
5840 | and any magic in the source is discarded. | |
ff276b08 | 5841 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5842 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5843 | |
5844 | =cut | |
5845 | */ | |
79072805 LW |
5846 | |
5847 | void | |
864dbfa3 | 5848 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 | 5849 | { |
a3b680e6 | 5850 | const U32 refcnt = SvREFCNT(sv); |
765f542d | 5851 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
0453d815 | 5852 | if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL)) |
9014280d | 5853 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Reference miscount in sv_replace()"); |
93a17b20 | 5854 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5855 | if (SvMAGICAL(nsv)) |
5856 | mg_free(nsv); | |
5857 | else | |
5858 | sv_upgrade(nsv, SVt_PVMG); | |
b162af07 | 5859 | SvMAGIC_set(nsv, SvMAGIC(sv)); |
a0d0e21e | 5860 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 | 5861 | SvMAGICAL_off(sv); |
b162af07 | 5862 | SvMAGIC_set(sv, NULL); |
93a17b20 | 5863 | } |
79072805 LW |
5864 | SvREFCNT(sv) = 0; |
5865 | sv_clear(sv); | |
477f5d66 | 5866 | assert(!SvREFCNT(sv)); |
fd0854ff DM |
5867 | #ifdef DEBUG_LEAKING_SCALARS |
5868 | sv->sv_flags = nsv->sv_flags; | |
5869 | sv->sv_any = nsv->sv_any; | |
5870 | sv->sv_refcnt = nsv->sv_refcnt; | |
5871 | #else | |
79072805 | 5872 | StructCopy(nsv,sv,SV); |
fd0854ff DM |
5873 | #endif |
5874 | ||
d3d0e6f1 NC |
5875 | #ifdef PERL_COPY_ON_WRITE |
5876 | if (SvIsCOW_normal(nsv)) { | |
5877 | /* We need to follow the pointers around the loop to make the | |
5878 | previous SV point to sv, rather than nsv. */ | |
5879 | SV *next; | |
5880 | SV *current = nsv; | |
5881 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5882 | assert(next); | |
5883 | current = next; | |
5884 | assert(SvPVX(current) == SvPVX(nsv)); | |
5885 | } | |
5886 | /* Make the SV before us point to the SV after us. */ | |
5887 | if (DEBUG_C_TEST) { | |
5888 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5889 | sv_dump(current); | |
a29f6d03 NC |
5890 | PerlIO_printf(Perl_debug_log, |
5891 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5892 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5893 | } | |
a29f6d03 | 5894 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5895 | } |
5896 | #endif | |
79072805 | 5897 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5898 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 5899 | SvREFCNT(nsv) = 0; |
463ee0b2 | 5900 | del_SV(nsv); |
79072805 LW |
5901 | } |
5902 | ||
c461cf8f JH |
5903 | /* |
5904 | =for apidoc sv_clear | |
5905 | ||
645c22ef DM |
5906 | Clear an SV: call any destructors, free up any memory used by the body, |
5907 | and free the body itself. The SV's head is I<not> freed, although | |
5908 | its type is set to all 1's so that it won't inadvertently be assumed | |
5909 | to be live during global destruction etc. | |
5910 | This function should only be called when REFCNT is zero. Most of the time | |
5911 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5912 | instead. | |
c461cf8f JH |
5913 | |
5914 | =cut | |
5915 | */ | |
5916 | ||
79072805 | 5917 | void |
864dbfa3 | 5918 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5919 | { |
27da23d5 | 5920 | dVAR; |
ec12f114 | 5921 | HV* stash; |
79072805 LW |
5922 | assert(sv); |
5923 | assert(SvREFCNT(sv) == 0); | |
5924 | ||
ed6116ce | 5925 | if (SvOBJECT(sv)) { |
3280af22 | 5926 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5927 | dSP; |
32251b26 | 5928 | CV* destructor; |
a0d0e21e | 5929 | |
5cc433a6 | 5930 | |
8ebc5c01 | 5931 | |
d460ef45 | 5932 | do { |
4e8e7886 | 5933 | stash = SvSTASH(sv); |
32251b26 | 5934 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5935 | if (destructor) { |
5cc433a6 AB |
5936 | SV* tmpref = newRV(sv); |
5937 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ | |
4e8e7886 | 5938 | ENTER; |
e788e7d3 | 5939 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5940 | EXTEND(SP, 2); |
5941 | PUSHMARK(SP); | |
5cc433a6 | 5942 | PUSHs(tmpref); |
4e8e7886 | 5943 | PUTBACK; |
44389ee9 | 5944 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
7a5fa8a2 NIS |
5945 | |
5946 | ||
d3acc0f7 | 5947 | POPSTACK; |
3095d977 | 5948 | SPAGAIN; |
4e8e7886 | 5949 | LEAVE; |
5cc433a6 AB |
5950 | if(SvREFCNT(tmpref) < 2) { |
5951 | /* tmpref is not kept alive! */ | |
5952 | SvREFCNT(sv)--; | |
b162af07 | 5953 | SvRV_set(tmpref, NULL); |
5cc433a6 AB |
5954 | SvROK_off(tmpref); |
5955 | } | |
5956 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5957 | } |
5958 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5959 | |
6f44e0a4 JP |
5960 | |
5961 | if (SvREFCNT(sv)) { | |
5962 | if (PL_in_clean_objs) | |
cea2e8a9 | 5963 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
6f44e0a4 JP |
5964 | HvNAME(stash)); |
5965 | /* DESTROY gave object new lease on life */ | |
5966 | return; | |
5967 | } | |
a0d0e21e | 5968 | } |
4e8e7886 | 5969 | |
a0d0e21e | 5970 | if (SvOBJECT(sv)) { |
4e8e7886 | 5971 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e LW |
5972 | SvOBJECT_off(sv); /* Curse the object. */ |
5973 | if (SvTYPE(sv) != SVt_PVIO) | |
3280af22 | 5974 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5975 | } |
463ee0b2 | 5976 | } |
524189f1 JH |
5977 | if (SvTYPE(sv) >= SVt_PVMG) { |
5978 | if (SvMAGIC(sv)) | |
5979 | mg_free(sv); | |
bce8f412 | 5980 | if (SvTYPE(sv) == SVt_PVMG && SvFLAGS(sv) & SVpad_TYPED) |
524189f1 JH |
5981 | SvREFCNT_dec(SvSTASH(sv)); |
5982 | } | |
ec12f114 | 5983 | stash = NULL; |
79072805 | 5984 | switch (SvTYPE(sv)) { |
8990e307 | 5985 | case SVt_PVIO: |
df0bd2f4 GS |
5986 | if (IoIFP(sv) && |
5987 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5988 | IoIFP(sv) != PerlIO_stdout() && |
5989 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5990 | { |
f2b5be74 | 5991 | io_close((IO*)sv, FALSE); |
93578b34 | 5992 | } |
1d7c1841 | 5993 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5994 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5995 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5996 | Safefree(IoTOP_NAME(sv)); |
5997 | Safefree(IoFMT_NAME(sv)); | |
5998 | Safefree(IoBOTTOM_NAME(sv)); | |
a0d0e21e | 5999 | /* FALL THROUGH */ |
79072805 | 6000 | case SVt_PVBM: |
a0d0e21e | 6001 | goto freescalar; |
79072805 | 6002 | case SVt_PVCV: |
748a9306 | 6003 | case SVt_PVFM: |
85e6fe83 | 6004 | cv_undef((CV*)sv); |
a0d0e21e | 6005 | goto freescalar; |
79072805 | 6006 | case SVt_PVHV: |
85e6fe83 | 6007 | hv_undef((HV*)sv); |
a0d0e21e | 6008 | break; |
79072805 | 6009 | case SVt_PVAV: |
85e6fe83 | 6010 | av_undef((AV*)sv); |
a0d0e21e | 6011 | break; |
02270b4e | 6012 | case SVt_PVLV: |
dd28f7bb DM |
6013 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
6014 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
6015 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
6016 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
6017 | } | |
6018 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
6019 | SvREFCNT_dec(LvTARG(sv)); | |
02270b4e | 6020 | goto freescalar; |
a0d0e21e | 6021 | case SVt_PVGV: |
1edc1566 | 6022 | gp_free((GV*)sv); |
a0d0e21e | 6023 | Safefree(GvNAME(sv)); |
ec12f114 JPC |
6024 | /* cannot decrease stash refcount yet, as we might recursively delete |
6025 | ourselves when the refcnt drops to zero. Delay SvREFCNT_dec | |
6026 | of stash until current sv is completely gone. | |
6027 | -- JohnPC, 27 Mar 1998 */ | |
6028 | stash = GvSTASH(sv); | |
a0d0e21e | 6029 | /* FALL THROUGH */ |
79072805 | 6030 | case SVt_PVMG: |
79072805 LW |
6031 | case SVt_PVNV: |
6032 | case SVt_PVIV: | |
a0d0e21e | 6033 | freescalar: |
5228ca4e NC |
6034 | /* Don't bother with SvOOK_off(sv); as we're only going to free it. */ |
6035 | if (SvOOK(sv)) { | |
6036 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); | |
6037 | /* Don't even bother with turning off the OOK flag. */ | |
6038 | } | |
79072805 LW |
6039 | /* FALL THROUGH */ |
6040 | case SVt_PV: | |
a0d0e21e | 6041 | case SVt_RV: |
810b8aa5 GS |
6042 | if (SvROK(sv)) { |
6043 | if (SvWEAKREF(sv)) | |
6044 | sv_del_backref(sv); | |
6045 | else | |
6046 | SvREFCNT_dec(SvRV(sv)); | |
6047 | } | |
765f542d NC |
6048 | #ifdef PERL_COPY_ON_WRITE |
6049 | else if (SvPVX(sv)) { | |
6050 | if (SvIsCOW(sv)) { | |
6051 | /* I believe I need to grab the global SV mutex here and | |
6052 | then recheck the COW status. */ | |
46187eeb NC |
6053 | if (DEBUG_C_TEST) { |
6054 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 6055 | sv_dump(sv); |
46187eeb | 6056 | } |
e419cbc5 | 6057 | sv_release_COW(sv, SvPVX(sv), SvCUR(sv), SvLEN(sv), |
765f542d NC |
6058 | SvUVX(sv), SV_COW_NEXT_SV(sv)); |
6059 | /* And drop it here. */ | |
6060 | SvFAKE_off(sv); | |
6061 | } else if (SvLEN(sv)) { | |
6062 | Safefree(SvPVX(sv)); | |
6063 | } | |
6064 | } | |
6065 | #else | |
1edc1566 | 6066 | else if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 | 6067 | Safefree(SvPVX(sv)); |
1c846c1f | 6068 | else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
25716404 GS |
6069 | unsharepvn(SvPVX(sv), |
6070 | SvUTF8(sv) ? -(I32)SvCUR(sv) : SvCUR(sv), | |
6071 | SvUVX(sv)); | |
1c846c1f NIS |
6072 | SvFAKE_off(sv); |
6073 | } | |
765f542d | 6074 | #endif |
79072805 | 6075 | break; |
a0d0e21e | 6076 | /* |
79072805 | 6077 | case SVt_NV: |
79072805 | 6078 | case SVt_IV: |
79072805 LW |
6079 | case SVt_NULL: |
6080 | break; | |
a0d0e21e | 6081 | */ |
79072805 LW |
6082 | } |
6083 | ||
6084 | switch (SvTYPE(sv)) { | |
6085 | case SVt_NULL: | |
6086 | break; | |
79072805 LW |
6087 | case SVt_IV: |
6088 | del_XIV(SvANY(sv)); | |
6089 | break; | |
6090 | case SVt_NV: | |
6091 | del_XNV(SvANY(sv)); | |
6092 | break; | |
ed6116ce LW |
6093 | case SVt_RV: |
6094 | del_XRV(SvANY(sv)); | |
6095 | break; | |
79072805 LW |
6096 | case SVt_PV: |
6097 | del_XPV(SvANY(sv)); | |
6098 | break; | |
6099 | case SVt_PVIV: | |
6100 | del_XPVIV(SvANY(sv)); | |
6101 | break; | |
6102 | case SVt_PVNV: | |
6103 | del_XPVNV(SvANY(sv)); | |
6104 | break; | |
6105 | case SVt_PVMG: | |
6106 | del_XPVMG(SvANY(sv)); | |
6107 | break; | |
6108 | case SVt_PVLV: | |
6109 | del_XPVLV(SvANY(sv)); | |
6110 | break; | |
6111 | case SVt_PVAV: | |
6112 | del_XPVAV(SvANY(sv)); | |
6113 | break; | |
6114 | case SVt_PVHV: | |
6115 | del_XPVHV(SvANY(sv)); | |
6116 | break; | |
6117 | case SVt_PVCV: | |
6118 | del_XPVCV(SvANY(sv)); | |
6119 | break; | |
6120 | case SVt_PVGV: | |
6121 | del_XPVGV(SvANY(sv)); | |
ec12f114 JPC |
6122 | /* code duplication for increased performance. */ |
6123 | SvFLAGS(sv) &= SVf_BREAK; | |
6124 | SvFLAGS(sv) |= SVTYPEMASK; | |
6125 | /* decrease refcount of the stash that owns this GV, if any */ | |
6126 | if (stash) | |
6127 | SvREFCNT_dec(stash); | |
6128 | return; /* not break, SvFLAGS reset already happened */ | |
79072805 LW |
6129 | case SVt_PVBM: |
6130 | del_XPVBM(SvANY(sv)); | |
6131 | break; | |
6132 | case SVt_PVFM: | |
6133 | del_XPVFM(SvANY(sv)); | |
6134 | break; | |
8990e307 LW |
6135 | case SVt_PVIO: |
6136 | del_XPVIO(SvANY(sv)); | |
6137 | break; | |
79072805 | 6138 | } |
a0d0e21e | 6139 | SvFLAGS(sv) &= SVf_BREAK; |
8990e307 | 6140 | SvFLAGS(sv) |= SVTYPEMASK; |
79072805 LW |
6141 | } |
6142 | ||
645c22ef DM |
6143 | /* |
6144 | =for apidoc sv_newref | |
6145 | ||
6146 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
6147 | instead. | |
6148 | ||
6149 | =cut | |
6150 | */ | |
6151 | ||
79072805 | 6152 | SV * |
864dbfa3 | 6153 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 6154 | { |
463ee0b2 | 6155 | if (sv) |
4db098f4 | 6156 | (SvREFCNT(sv))++; |
79072805 LW |
6157 | return sv; |
6158 | } | |
6159 | ||
c461cf8f JH |
6160 | /* |
6161 | =for apidoc sv_free | |
6162 | ||
645c22ef DM |
6163 | Decrement an SV's reference count, and if it drops to zero, call |
6164 | C<sv_clear> to invoke destructors and free up any memory used by | |
6165 | the body; finally, deallocate the SV's head itself. | |
6166 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
6167 | |
6168 | =cut | |
6169 | */ | |
6170 | ||
79072805 | 6171 | void |
864dbfa3 | 6172 | Perl_sv_free(pTHX_ SV *sv) |
79072805 | 6173 | { |
27da23d5 | 6174 | dVAR; |
79072805 LW |
6175 | if (!sv) |
6176 | return; | |
a0d0e21e LW |
6177 | if (SvREFCNT(sv) == 0) { |
6178 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
6179 | /* this SV's refcnt has been artificially decremented to |
6180 | * trigger cleanup */ | |
a0d0e21e | 6181 | return; |
3280af22 | 6182 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 6183 | return; |
d689ffdd JP |
6184 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6185 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6186 | SvREFCNT(sv) = (~(U32)0)/2; | |
6187 | return; | |
6188 | } | |
0453d815 | 6189 | if (ckWARN_d(WARN_INTERNAL)) |
d5dede04 | 6190 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
6191 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
6192 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 LW |
6193 | return; |
6194 | } | |
4db098f4 | 6195 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 6196 | return; |
8c4d3c90 NC |
6197 | Perl_sv_free2(aTHX_ sv); |
6198 | } | |
6199 | ||
6200 | void | |
6201 | Perl_sv_free2(pTHX_ SV *sv) | |
6202 | { | |
27da23d5 | 6203 | dVAR; |
463ee0b2 LW |
6204 | #ifdef DEBUGGING |
6205 | if (SvTEMP(sv)) { | |
0453d815 | 6206 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 6207 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
6208 | "Attempt to free temp prematurely: SV 0x%"UVxf |
6209 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 6210 | return; |
79072805 | 6211 | } |
463ee0b2 | 6212 | #endif |
d689ffdd JP |
6213 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6214 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6215 | SvREFCNT(sv) = (~(U32)0)/2; | |
6216 | return; | |
6217 | } | |
79072805 | 6218 | sv_clear(sv); |
477f5d66 CS |
6219 | if (! SvREFCNT(sv)) |
6220 | del_SV(sv); | |
79072805 LW |
6221 | } |
6222 | ||
954c1994 GS |
6223 | /* |
6224 | =for apidoc sv_len | |
6225 | ||
645c22ef DM |
6226 | Returns the length of the string in the SV. Handles magic and type |
6227 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
6228 | |
6229 | =cut | |
6230 | */ | |
6231 | ||
79072805 | 6232 | STRLEN |
864dbfa3 | 6233 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 6234 | { |
463ee0b2 | 6235 | STRLEN len; |
79072805 LW |
6236 | |
6237 | if (!sv) | |
6238 | return 0; | |
6239 | ||
8990e307 | 6240 | if (SvGMAGICAL(sv)) |
565764a8 | 6241 | len = mg_length(sv); |
8990e307 | 6242 | else |
497b47a8 | 6243 | (void)SvPV(sv, len); |
463ee0b2 | 6244 | return len; |
79072805 LW |
6245 | } |
6246 | ||
c461cf8f JH |
6247 | /* |
6248 | =for apidoc sv_len_utf8 | |
6249 | ||
6250 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 6251 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
6252 | |
6253 | =cut | |
6254 | */ | |
6255 | ||
7e8c5dac HS |
6256 | /* |
6257 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
6258 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
6259 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
7a5fa8a2 | 6260 | * |
7e8c5dac HS |
6261 | */ |
6262 | ||
a0ed51b3 | 6263 | STRLEN |
864dbfa3 | 6264 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 6265 | { |
a0ed51b3 LW |
6266 | if (!sv) |
6267 | return 0; | |
6268 | ||
a0ed51b3 | 6269 | if (SvGMAGICAL(sv)) |
b76347f2 | 6270 | return mg_length(sv); |
a0ed51b3 | 6271 | else |
b76347f2 | 6272 | { |
7e8c5dac | 6273 | STRLEN len, ulen; |
a3b680e6 | 6274 | const U8 *s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
6275 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
6276 | ||
e23c8137 | 6277 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) { |
7e8c5dac | 6278 | ulen = mg->mg_len; |
e23c8137 JH |
6279 | #ifdef PERL_UTF8_CACHE_ASSERT |
6280 | assert(ulen == Perl_utf8_length(aTHX_ s, s + len)); | |
6281 | #endif | |
6282 | } | |
7e8c5dac HS |
6283 | else { |
6284 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
6285 | if (!mg && !SvREADONLY(sv)) { | |
6286 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6287 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6288 | assert(mg); | |
6289 | } | |
6290 | if (mg) | |
6291 | mg->mg_len = ulen; | |
6292 | } | |
6293 | return ulen; | |
6294 | } | |
6295 | } | |
6296 | ||
6297 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
6298 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6299 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
6300 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
6301 | * and byte offset) cache positions. | |
6302 | * | |
6303 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
6304 | * Note that the mg_len is not the length of the mg_ptr field. | |
6305 | * | |
6306 | */ | |
6307 | STATIC bool | |
a3b680e6 | 6308 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 offsetp, U8 *s, U8 *start) |
7e8c5dac | 6309 | { |
7a5fa8a2 | 6310 | bool found = FALSE; |
7e8c5dac HS |
6311 | |
6312 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
8f78557a | 6313 | if (!*mgp) |
27da23d5 | 6314 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, (MGVTBL*)&PL_vtbl_utf8, 0, 0); |
7e8c5dac | 6315 | assert(*mgp); |
b76347f2 | 6316 | |
7e8c5dac HS |
6317 | if ((*mgp)->mg_ptr) |
6318 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
6319 | else { | |
6320 | Newz(0, *cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
6321 | (*mgp)->mg_ptr = (char *) *cachep; | |
6322 | } | |
6323 | assert(*cachep); | |
6324 | ||
a3b680e6 | 6325 | (*cachep)[i] = offsetp; |
7e8c5dac HS |
6326 | (*cachep)[i+1] = s - start; |
6327 | found = TRUE; | |
a0ed51b3 | 6328 | } |
7e8c5dac HS |
6329 | |
6330 | return found; | |
a0ed51b3 LW |
6331 | } |
6332 | ||
645c22ef | 6333 | /* |
7e8c5dac HS |
6334 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
6335 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6336 | * between UTF-8 and byte offsets. See also the comments of | |
6337 | * S_utf8_mg_pos_init(). | |
6338 | * | |
6339 | */ | |
6340 | STATIC bool | |
6e551876 | 6341 | 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 |
6342 | { |
6343 | bool found = FALSE; | |
6344 | ||
6345 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6346 | if (!*mgp) | |
6347 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
6348 | if (*mgp && (*mgp)->mg_ptr) { | |
6349 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
e23c8137 | 6350 | ASSERT_UTF8_CACHE(*cachep); |
667208dd | 6351 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
7a5fa8a2 | 6352 | found = TRUE; |
7e8c5dac HS |
6353 | else { /* We will skip to the right spot. */ |
6354 | STRLEN forw = 0; | |
6355 | STRLEN backw = 0; | |
a3b680e6 | 6356 | const U8* p = NULL; |
7e8c5dac HS |
6357 | |
6358 | /* The assumption is that going backward is half | |
6359 | * the speed of going forward (that's where the | |
6360 | * 2 * backw in the below comes from). (The real | |
6361 | * figure of course depends on the UTF-8 data.) */ | |
6362 | ||
667208dd | 6363 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 6364 | forw = uoff; |
667208dd | 6365 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
6366 | |
6367 | if (forw < 2 * backw) | |
6368 | p = start; | |
6369 | else | |
6370 | p = start + (*cachep)[i+1]; | |
6371 | } | |
6372 | /* Try this only for the substr offset (i == 0), | |
6373 | * not for the substr length (i == 2). */ | |
6374 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
a3b680e6 | 6375 | const STRLEN ulen = sv_len_utf8(sv); |
7e8c5dac | 6376 | |
667208dd JH |
6377 | if ((STRLEN)uoff < ulen) { |
6378 | forw = (STRLEN)uoff - (*cachep)[i]; | |
6379 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
6380 | |
6381 | if (forw < 2 * backw) | |
6382 | p = start + (*cachep)[i+1]; | |
6383 | else | |
6384 | p = send; | |
6385 | } | |
6386 | ||
6387 | /* If the string is not long enough for uoff, | |
6388 | * we could extend it, but not at this low a level. */ | |
6389 | } | |
6390 | ||
6391 | if (p) { | |
6392 | if (forw < 2 * backw) { | |
6393 | while (forw--) | |
6394 | p += UTF8SKIP(p); | |
6395 | } | |
6396 | else { | |
6397 | while (backw--) { | |
6398 | p--; | |
6399 | while (UTF8_IS_CONTINUATION(*p)) | |
6400 | p--; | |
6401 | } | |
6402 | } | |
6403 | ||
6404 | /* Update the cache. */ | |
667208dd | 6405 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac | 6406 | (*cachep)[i+1] = p - start; |
8f78557a AE |
6407 | |
6408 | /* Drop the stale "length" cache */ | |
6409 | if (i == 0) { | |
6410 | (*cachep)[2] = 0; | |
6411 | (*cachep)[3] = 0; | |
6412 | } | |
7a5fa8a2 | 6413 | |
7e8c5dac HS |
6414 | found = TRUE; |
6415 | } | |
6416 | } | |
6417 | if (found) { /* Setup the return values. */ | |
6418 | *offsetp = (*cachep)[i+1]; | |
6419 | *sp = start + *offsetp; | |
6420 | if (*sp >= send) { | |
6421 | *sp = send; | |
6422 | *offsetp = send - start; | |
6423 | } | |
6424 | else if (*sp < start) { | |
6425 | *sp = start; | |
6426 | *offsetp = 0; | |
6427 | } | |
6428 | } | |
6429 | } | |
e23c8137 JH |
6430 | #ifdef PERL_UTF8_CACHE_ASSERT |
6431 | if (found) { | |
6432 | U8 *s = start; | |
6433 | I32 n = uoff; | |
6434 | ||
6435 | while (n-- && s < send) | |
6436 | s += UTF8SKIP(s); | |
6437 | ||
6438 | if (i == 0) { | |
6439 | assert(*offsetp == s - start); | |
6440 | assert((*cachep)[0] == (STRLEN)uoff); | |
6441 | assert((*cachep)[1] == *offsetp); | |
6442 | } | |
6443 | ASSERT_UTF8_CACHE(*cachep); | |
6444 | } | |
6445 | #endif | |
7e8c5dac | 6446 | } |
e23c8137 | 6447 | |
7e8c5dac HS |
6448 | return found; |
6449 | } | |
7a5fa8a2 | 6450 | |
7e8c5dac | 6451 | /* |
645c22ef DM |
6452 | =for apidoc sv_pos_u2b |
6453 | ||
1e54db1a | 6454 | Converts the value pointed to by offsetp from a count of UTF-8 chars from |
645c22ef DM |
6455 | the start of the string, to a count of the equivalent number of bytes; if |
6456 | lenp is non-zero, it does the same to lenp, but this time starting from | |
6457 | the offset, rather than from the start of the string. Handles magic and | |
6458 | type coercion. | |
6459 | ||
6460 | =cut | |
6461 | */ | |
6462 | ||
7e8c5dac HS |
6463 | /* |
6464 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
6465 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6466 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6467 | * | |
6468 | */ | |
6469 | ||
a0ed51b3 | 6470 | void |
864dbfa3 | 6471 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 6472 | { |
dfe13c55 GS |
6473 | U8 *start; |
6474 | U8 *s; | |
a0ed51b3 | 6475 | STRLEN len; |
7e8c5dac HS |
6476 | STRLEN *cache = 0; |
6477 | STRLEN boffset = 0; | |
a0ed51b3 LW |
6478 | |
6479 | if (!sv) | |
6480 | return; | |
6481 | ||
dfe13c55 | 6482 | start = s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
6483 | if (len) { |
6484 | I32 uoffset = *offsetp; | |
6485 | U8 *send = s + len; | |
6486 | MAGIC *mg = 0; | |
6487 | bool found = FALSE; | |
6488 | ||
bdf77a2a | 6489 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
6490 | found = TRUE; |
6491 | if (!found && uoffset > 0) { | |
6492 | while (s < send && uoffset--) | |
6493 | s += UTF8SKIP(s); | |
6494 | if (s >= send) | |
6495 | s = send; | |
a3b680e6 | 6496 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, *offsetp, s, start)) |
7e8c5dac HS |
6497 | boffset = cache[1]; |
6498 | *offsetp = s - start; | |
6499 | } | |
6500 | if (lenp) { | |
6501 | found = FALSE; | |
6502 | start = s; | |
ec062429 | 6503 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp, &s, start, send)) { |
7e8c5dac HS |
6504 | *lenp -= boffset; |
6505 | found = TRUE; | |
6506 | } | |
6507 | if (!found && *lenp > 0) { | |
6508 | I32 ulen = *lenp; | |
6509 | if (ulen > 0) | |
6510 | while (s < send && ulen--) | |
6511 | s += UTF8SKIP(s); | |
6512 | if (s >= send) | |
6513 | s = send; | |
a3b680e6 | 6514 | utf8_mg_pos_init(sv, &mg, &cache, 2, *lenp, s, start); |
7e8c5dac HS |
6515 | } |
6516 | *lenp = s - start; | |
6517 | } | |
e23c8137 | 6518 | ASSERT_UTF8_CACHE(cache); |
7e8c5dac HS |
6519 | } |
6520 | else { | |
6521 | *offsetp = 0; | |
6522 | if (lenp) | |
6523 | *lenp = 0; | |
a0ed51b3 | 6524 | } |
e23c8137 | 6525 | |
a0ed51b3 LW |
6526 | return; |
6527 | } | |
6528 | ||
645c22ef DM |
6529 | /* |
6530 | =for apidoc sv_pos_b2u | |
6531 | ||
6532 | Converts the value pointed to by offsetp from a count of bytes from the | |
1e54db1a | 6533 | start of the string, to a count of the equivalent number of UTF-8 chars. |
645c22ef DM |
6534 | Handles magic and type coercion. |
6535 | ||
6536 | =cut | |
6537 | */ | |
6538 | ||
7e8c5dac HS |
6539 | /* |
6540 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
6541 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6542 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6543 | * | |
6544 | */ | |
6545 | ||
a0ed51b3 | 6546 | void |
7e8c5dac | 6547 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 6548 | { |
7e8c5dac | 6549 | U8* s; |
a0ed51b3 LW |
6550 | STRLEN len; |
6551 | ||
6552 | if (!sv) | |
6553 | return; | |
6554 | ||
dfe13c55 | 6555 | s = (U8*)SvPV(sv, len); |
eb160463 | 6556 | if ((I32)len < *offsetp) |
a0dbb045 | 6557 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac HS |
6558 | else { |
6559 | U8* send = s + *offsetp; | |
6560 | MAGIC* mg = NULL; | |
6561 | STRLEN *cache = NULL; | |
6562 | ||
6563 | len = 0; | |
6564 | ||
6565 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6566 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6567 | if (mg && mg->mg_ptr) { | |
6568 | cache = (STRLEN *) mg->mg_ptr; | |
c5661c80 | 6569 | if (cache[1] == (STRLEN)*offsetp) { |
7e8c5dac HS |
6570 | /* An exact match. */ |
6571 | *offsetp = cache[0]; | |
6572 | ||
6573 | return; | |
6574 | } | |
c5661c80 | 6575 | else if (cache[1] < (STRLEN)*offsetp) { |
7e8c5dac HS |
6576 | /* We already know part of the way. */ |
6577 | len = cache[0]; | |
6578 | s += cache[1]; | |
7a5fa8a2 | 6579 | /* Let the below loop do the rest. */ |
7e8c5dac HS |
6580 | } |
6581 | else { /* cache[1] > *offsetp */ | |
6582 | /* We already know all of the way, now we may | |
6583 | * be able to walk back. The same assumption | |
6584 | * is made as in S_utf8_mg_pos(), namely that | |
6585 | * walking backward is twice slower than | |
6586 | * walking forward. */ | |
6587 | STRLEN forw = *offsetp; | |
6588 | STRLEN backw = cache[1] - *offsetp; | |
6589 | ||
6590 | if (!(forw < 2 * backw)) { | |
6591 | U8 *p = s + cache[1]; | |
6592 | STRLEN ubackw = 0; | |
7a5fa8a2 | 6593 | |
a5b510f2 AE |
6594 | cache[1] -= backw; |
6595 | ||
7e8c5dac HS |
6596 | while (backw--) { |
6597 | p--; | |
0aeb64d0 | 6598 | while (UTF8_IS_CONTINUATION(*p)) { |
7e8c5dac | 6599 | p--; |
0aeb64d0 JH |
6600 | backw--; |
6601 | } | |
7e8c5dac HS |
6602 | ubackw++; |
6603 | } | |
6604 | ||
6605 | cache[0] -= ubackw; | |
0aeb64d0 | 6606 | *offsetp = cache[0]; |
a67d7df9 TS |
6607 | |
6608 | /* Drop the stale "length" cache */ | |
6609 | cache[2] = 0; | |
6610 | cache[3] = 0; | |
6611 | ||
0aeb64d0 | 6612 | return; |
7e8c5dac HS |
6613 | } |
6614 | } | |
6615 | } | |
e23c8137 | 6616 | ASSERT_UTF8_CACHE(cache); |
a0dbb045 | 6617 | } |
7e8c5dac HS |
6618 | |
6619 | while (s < send) { | |
6620 | STRLEN n = 1; | |
6621 | ||
6622 | /* Call utf8n_to_uvchr() to validate the sequence | |
6623 | * (unless a simple non-UTF character) */ | |
6624 | if (!UTF8_IS_INVARIANT(*s)) | |
6625 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
6626 | if (n > 0) { | |
6627 | s += n; | |
6628 | len++; | |
6629 | } | |
6630 | else | |
6631 | break; | |
6632 | } | |
6633 | ||
6634 | if (!SvREADONLY(sv)) { | |
6635 | if (!mg) { | |
6636 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6637 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6638 | } | |
6639 | assert(mg); | |
6640 | ||
6641 | if (!mg->mg_ptr) { | |
979acdb5 | 6642 | Newz(0, cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
6643 | mg->mg_ptr = (char *) cache; |
6644 | } | |
6645 | assert(cache); | |
6646 | ||
6647 | cache[0] = len; | |
6648 | cache[1] = *offsetp; | |
a67d7df9 TS |
6649 | /* Drop the stale "length" cache */ |
6650 | cache[2] = 0; | |
6651 | cache[3] = 0; | |
7e8c5dac HS |
6652 | } |
6653 | ||
6654 | *offsetp = len; | |
a0ed51b3 | 6655 | } |
a0ed51b3 LW |
6656 | return; |
6657 | } | |
6658 | ||
954c1994 GS |
6659 | /* |
6660 | =for apidoc sv_eq | |
6661 | ||
6662 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
6663 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6664 | coerce its args to strings if necessary. | |
954c1994 GS |
6665 | |
6666 | =cut | |
6667 | */ | |
6668 | ||
79072805 | 6669 | I32 |
e01b9e88 | 6670 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6671 | { |
e1ec3a88 | 6672 | const char *pv1; |
463ee0b2 | 6673 | STRLEN cur1; |
e1ec3a88 | 6674 | const char *pv2; |
463ee0b2 | 6675 | STRLEN cur2; |
e01b9e88 | 6676 | I32 eq = 0; |
553e1bcc AT |
6677 | char *tpv = Nullch; |
6678 | SV* svrecode = Nullsv; | |
79072805 | 6679 | |
e01b9e88 | 6680 | if (!sv1) { |
79072805 LW |
6681 | pv1 = ""; |
6682 | cur1 = 0; | |
6683 | } | |
463ee0b2 | 6684 | else |
e01b9e88 | 6685 | pv1 = SvPV(sv1, cur1); |
79072805 | 6686 | |
e01b9e88 SC |
6687 | if (!sv2){ |
6688 | pv2 = ""; | |
6689 | cur2 = 0; | |
92d29cee | 6690 | } |
e01b9e88 SC |
6691 | else |
6692 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6693 | |
cf48d248 | 6694 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6695 | /* Differing utf8ness. |
6696 | * Do not UTF8size the comparands as a side-effect. */ | |
6697 | if (PL_encoding) { | |
6698 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6699 | svrecode = newSVpvn(pv2, cur2); |
6700 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6701 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6702 | } |
6703 | else { | |
553e1bcc AT |
6704 | svrecode = newSVpvn(pv1, cur1); |
6705 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6706 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6707 | } |
6708 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
6709 | if (cur1 != cur2) { |
6710 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6711 | return FALSE; |
0a1bd7ac | 6712 | } |
799ef3cb JH |
6713 | } |
6714 | else { | |
6715 | bool is_utf8 = TRUE; | |
6716 | ||
6717 | if (SvUTF8(sv1)) { | |
6718 | /* sv1 is the UTF-8 one, | |
6719 | * if is equal it must be downgrade-able */ | |
e1ec3a88 | 6720 | char *pv = (char*)bytes_from_utf8((const U8*)pv1, |
799ef3cb JH |
6721 | &cur1, &is_utf8); |
6722 | if (pv != pv1) | |
553e1bcc | 6723 | pv1 = tpv = pv; |
799ef3cb JH |
6724 | } |
6725 | else { | |
6726 | /* sv2 is the UTF-8 one, | |
6727 | * if is equal it must be downgrade-able */ | |
e1ec3a88 | 6728 | char *pv = (char *)bytes_from_utf8((const U8*)pv2, |
799ef3cb JH |
6729 | &cur2, &is_utf8); |
6730 | if (pv != pv2) | |
553e1bcc | 6731 | pv2 = tpv = pv; |
799ef3cb JH |
6732 | } |
6733 | if (is_utf8) { | |
6734 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 6735 | assert (tpv == 0); |
799ef3cb JH |
6736 | return FALSE; |
6737 | } | |
6738 | } | |
cf48d248 JH |
6739 | } |
6740 | ||
6741 | if (cur1 == cur2) | |
765f542d | 6742 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6743 | |
553e1bcc AT |
6744 | if (svrecode) |
6745 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6746 | |
553e1bcc AT |
6747 | if (tpv) |
6748 | Safefree(tpv); | |
cf48d248 | 6749 | |
e01b9e88 | 6750 | return eq; |
79072805 LW |
6751 | } |
6752 | ||
954c1994 GS |
6753 | /* |
6754 | =for apidoc sv_cmp | |
6755 | ||
6756 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6757 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6758 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6759 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6760 | |
6761 | =cut | |
6762 | */ | |
6763 | ||
79072805 | 6764 | I32 |
e01b9e88 | 6765 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6766 | { |
560a288e | 6767 | STRLEN cur1, cur2; |
e1ec3a88 AL |
6768 | const char *pv1, *pv2; |
6769 | char *tpv = Nullch; | |
cf48d248 | 6770 | I32 cmp; |
553e1bcc | 6771 | SV *svrecode = Nullsv; |
560a288e | 6772 | |
e01b9e88 SC |
6773 | if (!sv1) { |
6774 | pv1 = ""; | |
560a288e GS |
6775 | cur1 = 0; |
6776 | } | |
e01b9e88 SC |
6777 | else |
6778 | pv1 = SvPV(sv1, cur1); | |
560a288e | 6779 | |
553e1bcc | 6780 | if (!sv2) { |
e01b9e88 | 6781 | pv2 = ""; |
560a288e GS |
6782 | cur2 = 0; |
6783 | } | |
e01b9e88 SC |
6784 | else |
6785 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6786 | |
cf48d248 | 6787 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6788 | /* Differing utf8ness. |
6789 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6790 | if (SvUTF8(sv1)) { |
799ef3cb | 6791 | if (PL_encoding) { |
553e1bcc AT |
6792 | svrecode = newSVpvn(pv2, cur2); |
6793 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6794 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6795 | } |
6796 | else { | |
e1ec3a88 | 6797 | pv2 = tpv = (char*)bytes_to_utf8((const U8*)pv2, &cur2); |
799ef3cb | 6798 | } |
cf48d248 JH |
6799 | } |
6800 | else { | |
799ef3cb | 6801 | if (PL_encoding) { |
553e1bcc AT |
6802 | svrecode = newSVpvn(pv1, cur1); |
6803 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6804 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6805 | } |
6806 | else { | |
e1ec3a88 | 6807 | pv1 = tpv = (char*)bytes_to_utf8((const U8*)pv1, &cur1); |
799ef3cb | 6808 | } |
cf48d248 JH |
6809 | } |
6810 | } | |
6811 | ||
e01b9e88 | 6812 | if (!cur1) { |
cf48d248 | 6813 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6814 | } else if (!cur2) { |
cf48d248 JH |
6815 | cmp = 1; |
6816 | } else { | |
e1ec3a88 | 6817 | const I32 retval = memcmp((const void*)pv1, (const void*)pv2, cur1 < cur2 ? cur1 : cur2); |
e01b9e88 SC |
6818 | |
6819 | if (retval) { | |
cf48d248 | 6820 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6821 | } else if (cur1 == cur2) { |
cf48d248 JH |
6822 | cmp = 0; |
6823 | } else { | |
6824 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6825 | } |
cf48d248 | 6826 | } |
16660edb | 6827 | |
553e1bcc AT |
6828 | if (svrecode) |
6829 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6830 | |
553e1bcc AT |
6831 | if (tpv) |
6832 | Safefree(tpv); | |
cf48d248 JH |
6833 | |
6834 | return cmp; | |
bbce6d69 | 6835 | } |
16660edb | 6836 | |
c461cf8f JH |
6837 | /* |
6838 | =for apidoc sv_cmp_locale | |
6839 | ||
645c22ef DM |
6840 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6841 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6842 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6843 | |
6844 | =cut | |
6845 | */ | |
6846 | ||
bbce6d69 | 6847 | I32 |
864dbfa3 | 6848 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6849 | { |
36477c24 | 6850 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6851 | |
bbce6d69 | 6852 | char *pv1, *pv2; |
6853 | STRLEN len1, len2; | |
6854 | I32 retval; | |
16660edb | 6855 | |
3280af22 | 6856 | if (PL_collation_standard) |
bbce6d69 | 6857 | goto raw_compare; |
16660edb | 6858 | |
bbce6d69 | 6859 | len1 = 0; |
8ac85365 | 6860 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6861 | len2 = 0; |
8ac85365 | 6862 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6863 | |
bbce6d69 | 6864 | if (!pv1 || !len1) { |
6865 | if (pv2 && len2) | |
6866 | return -1; | |
6867 | else | |
6868 | goto raw_compare; | |
6869 | } | |
6870 | else { | |
6871 | if (!pv2 || !len2) | |
6872 | return 1; | |
6873 | } | |
16660edb | 6874 | |
bbce6d69 | 6875 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6876 | |
bbce6d69 | 6877 | if (retval) |
16660edb | 6878 | return retval < 0 ? -1 : 1; |
6879 | ||
bbce6d69 | 6880 | /* |
6881 | * When the result of collation is equality, that doesn't mean | |
6882 | * that there are no differences -- some locales exclude some | |
6883 | * characters from consideration. So to avoid false equalities, | |
6884 | * we use the raw string as a tiebreaker. | |
6885 | */ | |
16660edb | 6886 | |
bbce6d69 | 6887 | raw_compare: |
6888 | /* FALL THROUGH */ | |
16660edb | 6889 | |
36477c24 | 6890 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6891 | |
bbce6d69 | 6892 | return sv_cmp(sv1, sv2); |
6893 | } | |
79072805 | 6894 | |
645c22ef | 6895 | |
36477c24 | 6896 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6897 | |
7a4c00b4 | 6898 | /* |
645c22ef DM |
6899 | =for apidoc sv_collxfrm |
6900 | ||
6901 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6902 | ||
6903 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6904 | scalar data of the variable, but transformed to such a format that a normal | |
6905 | memory comparison can be used to compare the data according to the locale | |
6906 | settings. | |
6907 | ||
6908 | =cut | |
6909 | */ | |
6910 | ||
bbce6d69 | 6911 | char * |
864dbfa3 | 6912 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6913 | { |
7a4c00b4 | 6914 | MAGIC *mg; |
16660edb | 6915 | |
14befaf4 | 6916 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6917 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
bbce6d69 | 6918 | char *s, *xf; |
6919 | STRLEN len, xlen; | |
6920 | ||
7a4c00b4 | 6921 | if (mg) |
6922 | Safefree(mg->mg_ptr); | |
bbce6d69 | 6923 | s = SvPV(sv, len); |
6924 | if ((xf = mem_collxfrm(s, len, &xlen))) { | |
ff0cee69 | 6925 | if (SvREADONLY(sv)) { |
6926 | SAVEFREEPV(xf); | |
6927 | *nxp = xlen; | |
3280af22 | 6928 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6929 | } |
7a4c00b4 | 6930 | if (! mg) { |
14befaf4 DM |
6931 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6932 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6933 | assert(mg); |
bbce6d69 | 6934 | } |
7a4c00b4 | 6935 | mg->mg_ptr = xf; |
565764a8 | 6936 | mg->mg_len = xlen; |
7a4c00b4 | 6937 | } |
6938 | else { | |
ff0cee69 | 6939 | if (mg) { |
6940 | mg->mg_ptr = NULL; | |
565764a8 | 6941 | mg->mg_len = -1; |
ff0cee69 | 6942 | } |
bbce6d69 | 6943 | } |
6944 | } | |
7a4c00b4 | 6945 | if (mg && mg->mg_ptr) { |
565764a8 | 6946 | *nxp = mg->mg_len; |
3280af22 | 6947 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6948 | } |
6949 | else { | |
6950 | *nxp = 0; | |
6951 | return NULL; | |
16660edb | 6952 | } |
79072805 LW |
6953 | } |
6954 | ||
36477c24 | 6955 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6956 | |
c461cf8f JH |
6957 | /* |
6958 | =for apidoc sv_gets | |
6959 | ||
6960 | Get a line from the filehandle and store it into the SV, optionally | |
6961 | appending to the currently-stored string. | |
6962 | ||
6963 | =cut | |
6964 | */ | |
6965 | ||
79072805 | 6966 | char * |
864dbfa3 | 6967 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6968 | { |
e1ec3a88 | 6969 | const char *rsptr; |
c07a80fd | 6970 | STRLEN rslen; |
6971 | register STDCHAR rslast; | |
6972 | register STDCHAR *bp; | |
6973 | register I32 cnt; | |
9c5ffd7c | 6974 | I32 i = 0; |
8bfdd7d9 | 6975 | I32 rspara = 0; |
e311fd51 | 6976 | I32 recsize; |
c07a80fd | 6977 | |
bc44a8a2 NC |
6978 | if (SvTHINKFIRST(sv)) |
6979 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6980 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6981 | from <>. | |
6982 | However, perlbench says it's slower, because the existing swipe code | |
6983 | is faster than copy on write. | |
6984 | Swings and roundabouts. */ | |
6fc92669 | 6985 | (void)SvUPGRADE(sv, SVt_PV); |
99491443 | 6986 | |
ff68c719 | 6987 | SvSCREAM_off(sv); |
efd8b2ba AE |
6988 | |
6989 | if (append) { | |
6990 | if (PerlIO_isutf8(fp)) { | |
6991 | if (!SvUTF8(sv)) { | |
6992 | sv_utf8_upgrade_nomg(sv); | |
6993 | sv_pos_u2b(sv,&append,0); | |
6994 | } | |
6995 | } else if (SvUTF8(sv)) { | |
6996 | SV *tsv = NEWSV(0,0); | |
6997 | sv_gets(tsv, fp, 0); | |
6998 | sv_utf8_upgrade_nomg(tsv); | |
6999 | SvCUR_set(sv,append); | |
7000 | sv_catsv(sv,tsv); | |
7001 | sv_free(tsv); | |
7002 | goto return_string_or_null; | |
7003 | } | |
7004 | } | |
7005 | ||
7006 | SvPOK_only(sv); | |
7007 | if (PerlIO_isutf8(fp)) | |
7008 | SvUTF8_on(sv); | |
c07a80fd | 7009 | |
923e4eb5 | 7010 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
7011 | /* we always read code in line mode */ |
7012 | rsptr = "\n"; | |
7013 | rslen = 1; | |
7014 | } | |
7015 | else if (RsSNARF(PL_rs)) { | |
7a5fa8a2 NIS |
7016 | /* If it is a regular disk file use size from stat() as estimate |
7017 | of amount we are going to read - may result in malloc-ing | |
7018 | more memory than we realy need if layers bellow reduce | |
e468d35b NIS |
7019 | size we read (e.g. CRLF or a gzip layer) |
7020 | */ | |
e311fd51 | 7021 | Stat_t st; |
e468d35b | 7022 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
f54cb97a | 7023 | const Off_t offset = PerlIO_tell(fp); |
58f1856e | 7024 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
7025 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
7026 | } | |
7027 | } | |
c07a80fd | 7028 | rsptr = NULL; |
7029 | rslen = 0; | |
7030 | } | |
3280af22 | 7031 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 7032 | I32 bytesread; |
5b2b9c68 HM |
7033 | char *buffer; |
7034 | ||
7035 | /* Grab the size of the record we're getting */ | |
3280af22 | 7036 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 7037 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
7038 | /* Go yank in */ |
7039 | #ifdef VMS | |
7040 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
7041 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
7042 | /* doing, but we've got no other real choice - except avoid stdio |
7043 | as implementation - perhaps write a :vms layer ? | |
7044 | */ | |
5b2b9c68 HM |
7045 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
7046 | #else | |
7047 | bytesread = PerlIO_read(fp, buffer, recsize); | |
7048 | #endif | |
27e6ca2d AE |
7049 | if (bytesread < 0) |
7050 | bytesread = 0; | |
e311fd51 | 7051 | SvCUR_set(sv, bytesread += append); |
e670df4e | 7052 | buffer[bytesread] = '\0'; |
efd8b2ba | 7053 | goto return_string_or_null; |
5b2b9c68 | 7054 | } |
3280af22 | 7055 | else if (RsPARA(PL_rs)) { |
c07a80fd | 7056 | rsptr = "\n\n"; |
7057 | rslen = 2; | |
8bfdd7d9 | 7058 | rspara = 1; |
c07a80fd | 7059 | } |
7d59b7e4 NIS |
7060 | else { |
7061 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
7062 | if (PerlIO_isutf8(fp)) { | |
7063 | rsptr = SvPVutf8(PL_rs, rslen); | |
7064 | } | |
7065 | else { | |
7066 | if (SvUTF8(PL_rs)) { | |
7067 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
7068 | Perl_croak(aTHX_ "Wide character in $/"); | |
7069 | } | |
7070 | } | |
7071 | rsptr = SvPV(PL_rs, rslen); | |
7072 | } | |
7073 | } | |
7074 | ||
c07a80fd | 7075 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
7076 | ||
8bfdd7d9 | 7077 | if (rspara) { /* have to do this both before and after */ |
79072805 | 7078 | do { /* to make sure file boundaries work right */ |
760ac839 | 7079 | if (PerlIO_eof(fp)) |
a0d0e21e | 7080 | return 0; |
760ac839 | 7081 | i = PerlIO_getc(fp); |
79072805 | 7082 | if (i != '\n') { |
a0d0e21e LW |
7083 | if (i == -1) |
7084 | return 0; | |
760ac839 | 7085 | PerlIO_ungetc(fp,i); |
79072805 LW |
7086 | break; |
7087 | } | |
7088 | } while (i != EOF); | |
7089 | } | |
c07a80fd | 7090 | |
760ac839 LW |
7091 | /* See if we know enough about I/O mechanism to cheat it ! */ |
7092 | ||
7093 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 7094 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
7095 | enough here - and may even be a macro allowing compile |
7096 | time optimization. | |
7097 | */ | |
7098 | ||
7099 | if (PerlIO_fast_gets(fp)) { | |
7100 | ||
7101 | /* | |
7102 | * We're going to steal some values from the stdio struct | |
7103 | * and put EVERYTHING in the innermost loop into registers. | |
7104 | */ | |
7105 | register STDCHAR *ptr; | |
7106 | STRLEN bpx; | |
7107 | I32 shortbuffered; | |
7108 | ||
16660edb | 7109 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
7110 | /* An ungetc()d char is handled separately from the regular | |
7111 | * buffer, so we getc() it back out and stuff it in the buffer. | |
7112 | */ | |
7113 | i = PerlIO_getc(fp); | |
7114 | if (i == EOF) return 0; | |
7115 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
7116 | (*fp)->_cnt++; | |
7117 | #endif | |
c07a80fd | 7118 | |
c2960299 | 7119 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 7120 | |
a20bf0c3 | 7121 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b | 7122 | /* make sure we have the room */ |
7a5fa8a2 | 7123 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { |
e468d35b | 7124 | /* Not room for all of it |
7a5fa8a2 | 7125 | if we are looking for a separator and room for some |
e468d35b NIS |
7126 | */ |
7127 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7a5fa8a2 | 7128 | /* just process what we have room for */ |
79072805 LW |
7129 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
7130 | cnt -= shortbuffered; | |
7131 | } | |
7132 | else { | |
7133 | shortbuffered = 0; | |
bbce6d69 | 7134 | /* remember that cnt can be negative */ |
eb160463 | 7135 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
7136 | } |
7137 | } | |
7a5fa8a2 | 7138 | else |
79072805 | 7139 | shortbuffered = 0; |
c07a80fd | 7140 | bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 7141 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 7142 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7143 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 7144 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 7145 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7146 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7147 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
7148 | for (;;) { |
7149 | screamer: | |
93a17b20 | 7150 | if (cnt > 0) { |
c07a80fd | 7151 | if (rslen) { |
760ac839 LW |
7152 | while (cnt > 0) { /* this | eat */ |
7153 | cnt--; | |
c07a80fd | 7154 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
7155 | goto thats_all_folks; /* screams | sed :-) */ | |
7156 | } | |
7157 | } | |
7158 | else { | |
1c846c1f NIS |
7159 | Copy(ptr, bp, cnt, char); /* this | eat */ |
7160 | bp += cnt; /* screams | dust */ | |
c07a80fd | 7161 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 7162 | cnt = 0; |
93a17b20 | 7163 | } |
79072805 LW |
7164 | } |
7165 | ||
748a9306 | 7166 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
7167 | cnt = shortbuffered; |
7168 | shortbuffered = 0; | |
c07a80fd | 7169 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
7170 | SvCUR_set(sv, bpx); |
7171 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
c07a80fd | 7172 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
7173 | continue; |
7174 | } | |
7175 | ||
16660edb | 7176 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
7177 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
7178 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 7179 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 7180 | #if 0 |
16660edb | 7181 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7182 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7183 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7184 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7185 | #endif |
1c846c1f | 7186 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 7187 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
7188 | another abstraction. */ | |
760ac839 | 7189 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 7190 | #if 0 |
16660edb | 7191 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7192 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7193 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7194 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7195 | #endif |
a20bf0c3 JH |
7196 | cnt = PerlIO_get_cnt(fp); |
7197 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 7198 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7199 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 7200 | |
748a9306 LW |
7201 | if (i == EOF) /* all done for ever? */ |
7202 | goto thats_really_all_folks; | |
7203 | ||
c07a80fd | 7204 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
7205 | SvCUR_set(sv, bpx); |
7206 | SvGROW(sv, bpx + cnt + 2); | |
c07a80fd | 7207 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
7208 | ||
eb160463 | 7209 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 7210 | |
c07a80fd | 7211 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 7212 | goto thats_all_folks; |
79072805 LW |
7213 | } |
7214 | ||
7215 | thats_all_folks: | |
eb160463 | 7216 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX(sv)) < rslen) || |
36477c24 | 7217 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 7218 | goto screamer; /* go back to the fray */ |
79072805 LW |
7219 | thats_really_all_folks: |
7220 | if (shortbuffered) | |
7221 | cnt += shortbuffered; | |
16660edb | 7222 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7223 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 7224 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 7225 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7226 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7227 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7228 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 7229 | *bp = '\0'; |
760ac839 | 7230 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */ |
16660edb | 7231 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 7232 | "Screamer: done, len=%ld, string=|%.*s|\n", |
7233 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv))); | |
760ac839 LW |
7234 | } |
7235 | else | |
79072805 | 7236 | { |
6edd2cd5 | 7237 | /*The big, slow, and stupid way. */ |
27da23d5 | 7238 | #ifdef USE_HEAP_INSTEAD_OF_STACK /* Even slower way. */ |
6edd2cd5 JH |
7239 | STDCHAR *buf = 0; |
7240 | New(0, buf, 8192, STDCHAR); | |
7241 | assert(buf); | |
4d2c4e07 | 7242 | #else |
6edd2cd5 | 7243 | STDCHAR buf[8192]; |
4d2c4e07 | 7244 | #endif |
79072805 | 7245 | |
760ac839 | 7246 | screamer2: |
c07a80fd | 7247 | if (rslen) { |
6867be6d | 7248 | const register STDCHAR *bpe = buf + sizeof(buf); |
760ac839 | 7249 | bp = buf; |
eb160463 | 7250 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
7251 | ; /* keep reading */ |
7252 | cnt = bp - buf; | |
c07a80fd | 7253 | } |
7254 | else { | |
760ac839 | 7255 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 7256 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
7257 | * both args of ?: operator, causing EOF to change into 255 | |
7258 | */ | |
37be0adf | 7259 | if (cnt > 0) |
cbe9e203 JH |
7260 | i = (U8)buf[cnt - 1]; |
7261 | else | |
37be0adf | 7262 | i = EOF; |
c07a80fd | 7263 | } |
79072805 | 7264 | |
cbe9e203 JH |
7265 | if (cnt < 0) |
7266 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
7267 | if (append) | |
7268 | sv_catpvn(sv, (char *) buf, cnt); | |
7269 | else | |
7270 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 7271 | |
7272 | if (i != EOF && /* joy */ | |
7273 | (!rslen || | |
7274 | SvCUR(sv) < rslen || | |
36477c24 | 7275 | memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
7276 | { |
7277 | append = -1; | |
63e4d877 CS |
7278 | /* |
7279 | * If we're reading from a TTY and we get a short read, | |
7280 | * indicating that the user hit his EOF character, we need | |
7281 | * to notice it now, because if we try to read from the TTY | |
7282 | * again, the EOF condition will disappear. | |
7283 | * | |
7284 | * The comparison of cnt to sizeof(buf) is an optimization | |
7285 | * that prevents unnecessary calls to feof(). | |
7286 | * | |
7287 | * - jik 9/25/96 | |
7288 | */ | |
7289 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
7290 | goto screamer2; | |
79072805 | 7291 | } |
6edd2cd5 | 7292 | |
27da23d5 | 7293 | #ifdef USE_HEAP_INSTEAD_OF_STACK |
6edd2cd5 JH |
7294 | Safefree(buf); |
7295 | #endif | |
79072805 LW |
7296 | } |
7297 | ||
8bfdd7d9 | 7298 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 7299 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 7300 | i = PerlIO_getc(fp); |
79072805 | 7301 | if (i != '\n') { |
760ac839 | 7302 | PerlIO_ungetc(fp,i); |
79072805 LW |
7303 | break; |
7304 | } | |
7305 | } | |
7306 | } | |
c07a80fd | 7307 | |
efd8b2ba | 7308 | return_string_or_null: |
c07a80fd | 7309 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
7310 | } |
7311 | ||
954c1994 GS |
7312 | /* |
7313 | =for apidoc sv_inc | |
7314 | ||
645c22ef DM |
7315 | Auto-increment of the value in the SV, doing string to numeric conversion |
7316 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7317 | |
7318 | =cut | |
7319 | */ | |
7320 | ||
79072805 | 7321 | void |
864dbfa3 | 7322 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
7323 | { |
7324 | register char *d; | |
463ee0b2 | 7325 | int flags; |
79072805 LW |
7326 | |
7327 | if (!sv) | |
7328 | return; | |
b23a5f78 GB |
7329 | if (SvGMAGICAL(sv)) |
7330 | mg_get(sv); | |
ed6116ce | 7331 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7332 | if (SvIsCOW(sv)) |
7333 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7334 | if (SvREADONLY(sv)) { |
923e4eb5 | 7335 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7336 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7337 | } |
a0d0e21e | 7338 | if (SvROK(sv)) { |
b5be31e9 | 7339 | IV i; |
9e7bc3e8 JD |
7340 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
7341 | return; | |
56431972 | 7342 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7343 | sv_unref(sv); |
7344 | sv_setiv(sv, i); | |
a0d0e21e | 7345 | } |
ed6116ce | 7346 | } |
8990e307 | 7347 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7348 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
7349 | /* It's (privately or publicly) a float, but not tested as an | |
7350 | integer, so test it to see. */ | |
d460ef45 | 7351 | (void) SvIV(sv); |
28e5dec8 JH |
7352 | flags = SvFLAGS(sv); |
7353 | } | |
7354 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
7355 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7356 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7357 | oops_its_int: |
59d8ce62 | 7358 | #endif |
25da4f38 IZ |
7359 | if (SvIsUV(sv)) { |
7360 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 7361 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
7362 | else |
7363 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 7364 | SvUV_set(sv, SvUVX(sv) + 1); |
25da4f38 IZ |
7365 | } else { |
7366 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 7367 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
7368 | else { |
7369 | (void)SvIOK_only(sv); | |
45977657 | 7370 | SvIV_set(sv, SvIVX(sv) + 1); |
1c846c1f | 7371 | } |
55497cff | 7372 | } |
79072805 LW |
7373 | return; |
7374 | } | |
28e5dec8 JH |
7375 | if (flags & SVp_NOK) { |
7376 | (void)SvNOK_only(sv); | |
9d6ce603 | 7377 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
7378 | return; |
7379 | } | |
7380 | ||
8990e307 | 7381 | if (!(flags & SVp_POK) || !*SvPVX(sv)) { |
28e5dec8 JH |
7382 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
7383 | sv_upgrade(sv, SVt_IV); | |
7384 | (void)SvIOK_only(sv); | |
45977657 | 7385 | SvIV_set(sv, 1); |
79072805 LW |
7386 | return; |
7387 | } | |
463ee0b2 | 7388 | d = SvPVX(sv); |
79072805 LW |
7389 | while (isALPHA(*d)) d++; |
7390 | while (isDIGIT(*d)) d++; | |
7391 | if (*d) { | |
28e5dec8 | 7392 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 7393 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
7394 | warnings. Probably ought to make the sv_iv_please() that does |
7395 | the conversion if possible, and silently. */ | |
c2988b20 | 7396 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7397 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7398 | /* Need to try really hard to see if it's an integer. | |
7399 | 9.22337203685478e+18 is an integer. | |
7400 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7401 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
7402 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
7403 | or we go insane. */ | |
d460ef45 | 7404 | |
28e5dec8 JH |
7405 | (void) sv_2iv(sv); |
7406 | if (SvIOK(sv)) | |
7407 | goto oops_its_int; | |
7408 | ||
7409 | /* sv_2iv *should* have made this an NV */ | |
7410 | if (flags & SVp_NOK) { | |
7411 | (void)SvNOK_only(sv); | |
9d6ce603 | 7412 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
7413 | return; |
7414 | } | |
7415 | /* I don't think we can get here. Maybe I should assert this | |
7416 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7417 | Fall through. */ | |
7418 | #if defined(USE_LONG_DOUBLE) | |
7419 | 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", | |
7420 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
7421 | #else | |
1779d84d | 7422 | 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 |
7423 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
7424 | #endif | |
7425 | } | |
7426 | #endif /* PERL_PRESERVE_IVUV */ | |
7427 | sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); | |
79072805 LW |
7428 | return; |
7429 | } | |
7430 | d--; | |
463ee0b2 | 7431 | while (d >= SvPVX(sv)) { |
79072805 LW |
7432 | if (isDIGIT(*d)) { |
7433 | if (++*d <= '9') | |
7434 | return; | |
7435 | *(d--) = '0'; | |
7436 | } | |
7437 | else { | |
9d116dd7 JH |
7438 | #ifdef EBCDIC |
7439 | /* MKS: The original code here died if letters weren't consecutive. | |
7440 | * at least it didn't have to worry about non-C locales. The | |
7441 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 7442 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
7443 | * [A-Za-z] are accepted by isALPHA in the C locale. |
7444 | */ | |
7445 | if (*d != 'z' && *d != 'Z') { | |
7446 | do { ++*d; } while (!isALPHA(*d)); | |
7447 | return; | |
7448 | } | |
7449 | *(d--) -= 'z' - 'a'; | |
7450 | #else | |
79072805 LW |
7451 | ++*d; |
7452 | if (isALPHA(*d)) | |
7453 | return; | |
7454 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 7455 | #endif |
79072805 LW |
7456 | } |
7457 | } | |
7458 | /* oh,oh, the number grew */ | |
7459 | SvGROW(sv, SvCUR(sv) + 2); | |
b162af07 | 7460 | SvCUR_set(sv, SvCUR(sv) + 1); |
463ee0b2 | 7461 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--) |
79072805 LW |
7462 | *d = d[-1]; |
7463 | if (isDIGIT(d[1])) | |
7464 | *d = '1'; | |
7465 | else | |
7466 | *d = d[1]; | |
7467 | } | |
7468 | ||
954c1994 GS |
7469 | /* |
7470 | =for apidoc sv_dec | |
7471 | ||
645c22ef DM |
7472 | Auto-decrement of the value in the SV, doing string to numeric conversion |
7473 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7474 | |
7475 | =cut | |
7476 | */ | |
7477 | ||
79072805 | 7478 | void |
864dbfa3 | 7479 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 7480 | { |
463ee0b2 LW |
7481 | int flags; |
7482 | ||
79072805 LW |
7483 | if (!sv) |
7484 | return; | |
b23a5f78 GB |
7485 | if (SvGMAGICAL(sv)) |
7486 | mg_get(sv); | |
ed6116ce | 7487 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7488 | if (SvIsCOW(sv)) |
7489 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7490 | if (SvREADONLY(sv)) { |
923e4eb5 | 7491 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7492 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7493 | } |
a0d0e21e | 7494 | if (SvROK(sv)) { |
b5be31e9 | 7495 | IV i; |
9e7bc3e8 JD |
7496 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
7497 | return; | |
56431972 | 7498 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7499 | sv_unref(sv); |
7500 | sv_setiv(sv, i); | |
a0d0e21e | 7501 | } |
ed6116ce | 7502 | } |
28e5dec8 JH |
7503 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
7504 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 7505 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7506 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
7507 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7508 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7509 | oops_its_int: |
59d8ce62 | 7510 | #endif |
25da4f38 IZ |
7511 | if (SvIsUV(sv)) { |
7512 | if (SvUVX(sv) == 0) { | |
7513 | (void)SvIOK_only(sv); | |
45977657 | 7514 | SvIV_set(sv, -1); |
25da4f38 IZ |
7515 | } |
7516 | else { | |
7517 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 7518 | SvUV_set(sv, SvUVX(sv) + 1); |
1c846c1f | 7519 | } |
25da4f38 IZ |
7520 | } else { |
7521 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 7522 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
7523 | else { |
7524 | (void)SvIOK_only(sv); | |
45977657 | 7525 | SvIV_set(sv, SvIVX(sv) - 1); |
1c846c1f | 7526 | } |
55497cff | 7527 | } |
7528 | return; | |
7529 | } | |
28e5dec8 | 7530 | if (flags & SVp_NOK) { |
9d6ce603 | 7531 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
7532 | (void)SvNOK_only(sv); |
7533 | return; | |
7534 | } | |
8990e307 | 7535 | if (!(flags & SVp_POK)) { |
4633a7c4 LW |
7536 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
7537 | sv_upgrade(sv, SVt_NV); | |
f599b64b | 7538 | SvNV_set(sv, 1.0); |
a0d0e21e | 7539 | (void)SvNOK_only(sv); |
79072805 LW |
7540 | return; |
7541 | } | |
28e5dec8 JH |
7542 | #ifdef PERL_PRESERVE_IVUV |
7543 | { | |
c2988b20 | 7544 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7545 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7546 | /* Need to try really hard to see if it's an integer. | |
7547 | 9.22337203685478e+18 is an integer. | |
7548 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7549 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
7550 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
7551 | or we go insane. */ | |
d460ef45 | 7552 | |
28e5dec8 JH |
7553 | (void) sv_2iv(sv); |
7554 | if (SvIOK(sv)) | |
7555 | goto oops_its_int; | |
7556 | ||
7557 | /* sv_2iv *should* have made this an NV */ | |
7558 | if (flags & SVp_NOK) { | |
7559 | (void)SvNOK_only(sv); | |
9d6ce603 | 7560 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
7561 | return; |
7562 | } | |
7563 | /* I don't think we can get here. Maybe I should assert this | |
7564 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7565 | Fall through. */ | |
7566 | #if defined(USE_LONG_DOUBLE) | |
7567 | 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", | |
7568 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
7569 | #else | |
1779d84d | 7570 | 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 |
7571 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
7572 | #endif | |
7573 | } | |
7574 | } | |
7575 | #endif /* PERL_PRESERVE_IVUV */ | |
097ee67d | 7576 | sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */ |
79072805 LW |
7577 | } |
7578 | ||
954c1994 GS |
7579 | /* |
7580 | =for apidoc sv_mortalcopy | |
7581 | ||
645c22ef | 7582 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
7583 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
7584 | explicit call to FREETMPS, or by an implicit call at places such as | |
7585 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
7586 | |
7587 | =cut | |
7588 | */ | |
7589 | ||
79072805 LW |
7590 | /* Make a string that will exist for the duration of the expression |
7591 | * evaluation. Actually, it may have to last longer than that, but | |
7592 | * hopefully we won't free it until it has been assigned to a | |
7593 | * permanent location. */ | |
7594 | ||
7595 | SV * | |
864dbfa3 | 7596 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 7597 | { |
463ee0b2 | 7598 | register SV *sv; |
b881518d | 7599 | |
4561caa4 | 7600 | new_SV(sv); |
79072805 | 7601 | sv_setsv(sv,oldstr); |
677b06e3 GS |
7602 | EXTEND_MORTAL(1); |
7603 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
7604 | SvTEMP_on(sv); |
7605 | return sv; | |
7606 | } | |
7607 | ||
954c1994 GS |
7608 | /* |
7609 | =for apidoc sv_newmortal | |
7610 | ||
645c22ef | 7611 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
7612 | set to 1. It will be destroyed "soon", either by an explicit call to |
7613 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
7614 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
7615 | |
7616 | =cut | |
7617 | */ | |
7618 | ||
8990e307 | 7619 | SV * |
864dbfa3 | 7620 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
7621 | { |
7622 | register SV *sv; | |
7623 | ||
4561caa4 | 7624 | new_SV(sv); |
8990e307 | 7625 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
7626 | EXTEND_MORTAL(1); |
7627 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
7628 | return sv; |
7629 | } | |
7630 | ||
954c1994 GS |
7631 | /* |
7632 | =for apidoc sv_2mortal | |
7633 | ||
d4236ebc DM |
7634 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
7635 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
7636 | statement boundaries. SvTEMP() is turned on which means that the SV's |
7637 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
7638 | and C<sv_mortalcopy>. | |
954c1994 GS |
7639 | |
7640 | =cut | |
7641 | */ | |
7642 | ||
79072805 | 7643 | SV * |
864dbfa3 | 7644 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 | 7645 | { |
27da23d5 | 7646 | dVAR; |
79072805 LW |
7647 | if (!sv) |
7648 | return sv; | |
d689ffdd | 7649 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 7650 | return sv; |
677b06e3 GS |
7651 | EXTEND_MORTAL(1); |
7652 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 7653 | SvTEMP_on(sv); |
79072805 LW |
7654 | return sv; |
7655 | } | |
7656 | ||
954c1994 GS |
7657 | /* |
7658 | =for apidoc newSVpv | |
7659 | ||
7660 | Creates a new SV and copies a string into it. The reference count for the | |
7661 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
7662 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
7663 | ||
7664 | =cut | |
7665 | */ | |
7666 | ||
79072805 | 7667 | SV * |
864dbfa3 | 7668 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 7669 | { |
463ee0b2 | 7670 | register SV *sv; |
79072805 | 7671 | |
4561caa4 | 7672 | new_SV(sv); |
79072805 LW |
7673 | if (!len) |
7674 | len = strlen(s); | |
7675 | sv_setpvn(sv,s,len); | |
7676 | return sv; | |
7677 | } | |
7678 | ||
954c1994 GS |
7679 | /* |
7680 | =for apidoc newSVpvn | |
7681 | ||
7682 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 7683 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 7684 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 7685 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
7686 | |
7687 | =cut | |
7688 | */ | |
7689 | ||
9da1e3b5 | 7690 | SV * |
864dbfa3 | 7691 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7692 | { |
7693 | register SV *sv; | |
7694 | ||
7695 | new_SV(sv); | |
9da1e3b5 MUN |
7696 | sv_setpvn(sv,s,len); |
7697 | return sv; | |
7698 | } | |
7699 | ||
1c846c1f NIS |
7700 | /* |
7701 | =for apidoc newSVpvn_share | |
7702 | ||
645c22ef DM |
7703 | Creates a new SV with its SvPVX pointing to a shared string in the string |
7704 | table. If the string does not already exist in the table, it is created | |
7705 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7706 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7707 | otherwise the hash is computed. The idea here is that as the string table | |
7708 | is used for shared hash keys these strings will have SvPVX == HeKEY and | |
7709 | hash lookup will avoid string compare. | |
1c846c1f NIS |
7710 | |
7711 | =cut | |
7712 | */ | |
7713 | ||
7714 | SV * | |
c3654f1a | 7715 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7716 | { |
7717 | register SV *sv; | |
c3654f1a IH |
7718 | bool is_utf8 = FALSE; |
7719 | if (len < 0) { | |
77caf834 | 7720 | STRLEN tmplen = -len; |
c3654f1a | 7721 | is_utf8 = TRUE; |
75a54232 | 7722 | /* See the note in hv.c:hv_fetch() --jhi */ |
e1ec3a88 | 7723 | src = (char*)bytes_from_utf8((const U8*)src, &tmplen, &is_utf8); |
75a54232 JH |
7724 | len = tmplen; |
7725 | } | |
1c846c1f | 7726 | if (!hash) |
5afd6d42 | 7727 | PERL_HASH(hash, src, len); |
1c846c1f NIS |
7728 | new_SV(sv); |
7729 | sv_upgrade(sv, SVt_PVIV); | |
f880fe2f | 7730 | SvPV_set(sv, sharepvn(src, is_utf8?-len:len, hash)); |
b162af07 | 7731 | SvCUR_set(sv, len); |
607fa7f2 | 7732 | SvUV_set(sv, hash); |
b162af07 | 7733 | SvLEN_set(sv, 0); |
1c846c1f NIS |
7734 | SvREADONLY_on(sv); |
7735 | SvFAKE_on(sv); | |
7736 | SvPOK_on(sv); | |
c3654f1a IH |
7737 | if (is_utf8) |
7738 | SvUTF8_on(sv); | |
1c846c1f NIS |
7739 | return sv; |
7740 | } | |
7741 | ||
645c22ef | 7742 | |
cea2e8a9 | 7743 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7744 | |
7745 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7746 | * version of the main function, (which may itself be aliased to us). | |
7747 | * Don't access this version directly. | |
7748 | */ | |
7749 | ||
46fc3d4c | 7750 | SV * |
cea2e8a9 | 7751 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7752 | { |
cea2e8a9 | 7753 | dTHX; |
46fc3d4c | 7754 | register SV *sv; |
7755 | va_list args; | |
46fc3d4c | 7756 | va_start(args, pat); |
c5be433b | 7757 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7758 | va_end(args); |
7759 | return sv; | |
7760 | } | |
cea2e8a9 | 7761 | #endif |
46fc3d4c | 7762 | |
954c1994 GS |
7763 | /* |
7764 | =for apidoc newSVpvf | |
7765 | ||
645c22ef | 7766 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7767 | C<sprintf>. |
7768 | ||
7769 | =cut | |
7770 | */ | |
7771 | ||
cea2e8a9 GS |
7772 | SV * |
7773 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7774 | { | |
7775 | register SV *sv; | |
7776 | va_list args; | |
cea2e8a9 | 7777 | va_start(args, pat); |
c5be433b | 7778 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7779 | va_end(args); |
7780 | return sv; | |
7781 | } | |
46fc3d4c | 7782 | |
645c22ef DM |
7783 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7784 | ||
79072805 | 7785 | SV * |
c5be433b GS |
7786 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7787 | { | |
7788 | register SV *sv; | |
7789 | new_SV(sv); | |
7790 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7791 | return sv; | |
7792 | } | |
7793 | ||
954c1994 GS |
7794 | /* |
7795 | =for apidoc newSVnv | |
7796 | ||
7797 | Creates a new SV and copies a floating point value into it. | |
7798 | The reference count for the SV is set to 1. | |
7799 | ||
7800 | =cut | |
7801 | */ | |
7802 | ||
c5be433b | 7803 | SV * |
65202027 | 7804 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7805 | { |
463ee0b2 | 7806 | register SV *sv; |
79072805 | 7807 | |
4561caa4 | 7808 | new_SV(sv); |
79072805 LW |
7809 | sv_setnv(sv,n); |
7810 | return sv; | |
7811 | } | |
7812 | ||
954c1994 GS |
7813 | /* |
7814 | =for apidoc newSViv | |
7815 | ||
7816 | Creates a new SV and copies an integer into it. The reference count for the | |
7817 | SV is set to 1. | |
7818 | ||
7819 | =cut | |
7820 | */ | |
7821 | ||
79072805 | 7822 | SV * |
864dbfa3 | 7823 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7824 | { |
463ee0b2 | 7825 | register SV *sv; |
79072805 | 7826 | |
4561caa4 | 7827 | new_SV(sv); |
79072805 LW |
7828 | sv_setiv(sv,i); |
7829 | return sv; | |
7830 | } | |
7831 | ||
954c1994 | 7832 | /* |
1a3327fb JH |
7833 | =for apidoc newSVuv |
7834 | ||
7835 | Creates a new SV and copies an unsigned integer into it. | |
7836 | The reference count for the SV is set to 1. | |
7837 | ||
7838 | =cut | |
7839 | */ | |
7840 | ||
7841 | SV * | |
7842 | Perl_newSVuv(pTHX_ UV u) | |
7843 | { | |
7844 | register SV *sv; | |
7845 | ||
7846 | new_SV(sv); | |
7847 | sv_setuv(sv,u); | |
7848 | return sv; | |
7849 | } | |
7850 | ||
7851 | /* | |
954c1994 GS |
7852 | =for apidoc newRV_noinc |
7853 | ||
7854 | Creates an RV wrapper for an SV. The reference count for the original | |
7855 | SV is B<not> incremented. | |
7856 | ||
7857 | =cut | |
7858 | */ | |
7859 | ||
2304df62 | 7860 | SV * |
864dbfa3 | 7861 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7862 | { |
7863 | register SV *sv; | |
7864 | ||
4561caa4 | 7865 | new_SV(sv); |
2304df62 | 7866 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7867 | SvTEMP_off(tmpRef); |
b162af07 | 7868 | SvRV_set(sv, tmpRef); |
2304df62 | 7869 | SvROK_on(sv); |
2304df62 AD |
7870 | return sv; |
7871 | } | |
7872 | ||
ff276b08 | 7873 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7874 | * newRV_inc is in fact #defined to newRV in sv.h |
7875 | */ | |
7876 | ||
5f05dabc | 7877 | SV * |
864dbfa3 | 7878 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7879 | { |
5f6447b6 | 7880 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7881 | } |
5f05dabc | 7882 | |
954c1994 GS |
7883 | /* |
7884 | =for apidoc newSVsv | |
7885 | ||
7886 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7887 | (Uses C<sv_setsv>). |
954c1994 GS |
7888 | |
7889 | =cut | |
7890 | */ | |
7891 | ||
79072805 | 7892 | SV * |
864dbfa3 | 7893 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7894 | { |
463ee0b2 | 7895 | register SV *sv; |
79072805 LW |
7896 | |
7897 | if (!old) | |
7898 | return Nullsv; | |
8990e307 | 7899 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7900 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7901 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7902 | return Nullsv; |
7903 | } | |
4561caa4 | 7904 | new_SV(sv); |
e90aabeb NC |
7905 | /* SV_GMAGIC is the default for sv_setv() |
7906 | SV_NOSTEAL prevents TEMP buffers being, well, stolen, and saves games | |
7907 | with SvTEMP_off and SvTEMP_on round a call to sv_setsv. */ | |
7908 | sv_setsv_flags(sv, old, SV_GMAGIC | SV_NOSTEAL); | |
463ee0b2 | 7909 | return sv; |
79072805 LW |
7910 | } |
7911 | ||
645c22ef DM |
7912 | /* |
7913 | =for apidoc sv_reset | |
7914 | ||
7915 | Underlying implementation for the C<reset> Perl function. | |
7916 | Note that the perl-level function is vaguely deprecated. | |
7917 | ||
7918 | =cut | |
7919 | */ | |
7920 | ||
79072805 | 7921 | void |
e1ec3a88 | 7922 | Perl_sv_reset(pTHX_ register const char *s, HV *stash) |
79072805 | 7923 | { |
27da23d5 | 7924 | dVAR; |
79072805 LW |
7925 | register HE *entry; |
7926 | register GV *gv; | |
7927 | register SV *sv; | |
7928 | register I32 i; | |
7929 | register PMOP *pm; | |
7930 | register I32 max; | |
4802d5d7 | 7931 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7932 | |
49d8d3a1 MB |
7933 | if (!stash) |
7934 | return; | |
7935 | ||
79072805 LW |
7936 | if (!*s) { /* reset ?? searches */ |
7937 | for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) { | |
48c036b1 | 7938 | pm->op_pmdynflags &= ~PMdf_USED; |
79072805 LW |
7939 | } |
7940 | return; | |
7941 | } | |
7942 | ||
7943 | /* reset variables */ | |
7944 | ||
7945 | if (!HvARRAY(stash)) | |
7946 | return; | |
463ee0b2 LW |
7947 | |
7948 | Zero(todo, 256, char); | |
79072805 | 7949 | while (*s) { |
4802d5d7 | 7950 | i = (unsigned char)*s; |
79072805 LW |
7951 | if (s[1] == '-') { |
7952 | s += 2; | |
7953 | } | |
4802d5d7 | 7954 | max = (unsigned char)*s++; |
79072805 | 7955 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7956 | todo[i] = 1; |
7957 | } | |
a0d0e21e | 7958 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
79072805 | 7959 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7960 | entry; |
7961 | entry = HeNEXT(entry)) | |
7962 | { | |
1edc1566 | 7963 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7964 | continue; |
1edc1566 | 7965 | gv = (GV*)HeVAL(entry); |
79072805 | 7966 | sv = GvSV(gv); |
9e35f4b3 GS |
7967 | if (SvTHINKFIRST(sv)) { |
7968 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7969 | sv_unref(sv); | |
7970 | continue; | |
7971 | } | |
0c34ef67 | 7972 | SvOK_off(sv); |
79072805 LW |
7973 | if (SvTYPE(sv) >= SVt_PV) { |
7974 | SvCUR_set(sv, 0); | |
463ee0b2 LW |
7975 | if (SvPVX(sv) != Nullch) |
7976 | *SvPVX(sv) = '\0'; | |
44a8e56a | 7977 | SvTAINT(sv); |
79072805 LW |
7978 | } |
7979 | if (GvAV(gv)) { | |
7980 | av_clear(GvAV(gv)); | |
7981 | } | |
44a8e56a | 7982 | if (GvHV(gv) && !HvNAME(GvHV(gv))) { |
463ee0b2 | 7983 | hv_clear(GvHV(gv)); |
2f42fcb0 | 7984 | #ifndef PERL_MICRO |
fa6a1c44 | 7985 | #ifdef USE_ENVIRON_ARRAY |
4efc5df6 GS |
7986 | if (gv == PL_envgv |
7987 | # ifdef USE_ITHREADS | |
7988 | && PL_curinterp == aTHX | |
7989 | # endif | |
7990 | ) | |
7991 | { | |
79072805 | 7992 | environ[0] = Nullch; |
4efc5df6 | 7993 | } |
a0d0e21e | 7994 | #endif |
2f42fcb0 | 7995 | #endif /* !PERL_MICRO */ |
79072805 LW |
7996 | } |
7997 | } | |
7998 | } | |
7999 | } | |
8000 | } | |
8001 | ||
645c22ef DM |
8002 | /* |
8003 | =for apidoc sv_2io | |
8004 | ||
8005 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
8006 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
8007 | named after the PV if we're a string. | |
8008 | ||
8009 | =cut | |
8010 | */ | |
8011 | ||
46fc3d4c | 8012 | IO* |
864dbfa3 | 8013 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 8014 | { |
8015 | IO* io; | |
8016 | GV* gv; | |
8017 | ||
8018 | switch (SvTYPE(sv)) { | |
8019 | case SVt_PVIO: | |
8020 | io = (IO*)sv; | |
8021 | break; | |
8022 | case SVt_PVGV: | |
8023 | gv = (GV*)sv; | |
8024 | io = GvIO(gv); | |
8025 | if (!io) | |
cea2e8a9 | 8026 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 8027 | break; |
8028 | default: | |
8029 | if (!SvOK(sv)) | |
cea2e8a9 | 8030 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 8031 | if (SvROK(sv)) |
8032 | return sv_2io(SvRV(sv)); | |
7a5fd60d | 8033 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
46fc3d4c | 8034 | if (gv) |
8035 | io = GvIO(gv); | |
8036 | else | |
8037 | io = 0; | |
8038 | if (!io) | |
35c1215d | 8039 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 8040 | break; |
8041 | } | |
8042 | return io; | |
8043 | } | |
8044 | ||
645c22ef DM |
8045 | /* |
8046 | =for apidoc sv_2cv | |
8047 | ||
8048 | Using various gambits, try to get a CV from an SV; in addition, try if | |
8049 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
8050 | ||
8051 | =cut | |
8052 | */ | |
8053 | ||
79072805 | 8054 | CV * |
864dbfa3 | 8055 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 8056 | { |
27da23d5 | 8057 | dVAR; |
c04a4dfe JH |
8058 | GV *gv = Nullgv; |
8059 | CV *cv = Nullcv; | |
79072805 LW |
8060 | |
8061 | if (!sv) | |
93a17b20 | 8062 | return *gvp = Nullgv, Nullcv; |
79072805 | 8063 | switch (SvTYPE(sv)) { |
79072805 LW |
8064 | case SVt_PVCV: |
8065 | *st = CvSTASH(sv); | |
8066 | *gvp = Nullgv; | |
8067 | return (CV*)sv; | |
8068 | case SVt_PVHV: | |
8069 | case SVt_PVAV: | |
8070 | *gvp = Nullgv; | |
8071 | return Nullcv; | |
8990e307 LW |
8072 | case SVt_PVGV: |
8073 | gv = (GV*)sv; | |
a0d0e21e | 8074 | *gvp = gv; |
8990e307 LW |
8075 | *st = GvESTASH(gv); |
8076 | goto fix_gv; | |
8077 | ||
79072805 | 8078 | default: |
a0d0e21e LW |
8079 | if (SvGMAGICAL(sv)) |
8080 | mg_get(sv); | |
8081 | if (SvROK(sv)) { | |
f5284f61 IZ |
8082 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
8083 | tryAMAGICunDEREF(to_cv); | |
8084 | ||
62f274bf GS |
8085 | sv = SvRV(sv); |
8086 | if (SvTYPE(sv) == SVt_PVCV) { | |
8087 | cv = (CV*)sv; | |
8088 | *gvp = Nullgv; | |
8089 | *st = CvSTASH(cv); | |
8090 | return cv; | |
8091 | } | |
8092 | else if(isGV(sv)) | |
8093 | gv = (GV*)sv; | |
8094 | else | |
cea2e8a9 | 8095 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 8096 | } |
62f274bf | 8097 | else if (isGV(sv)) |
79072805 LW |
8098 | gv = (GV*)sv; |
8099 | else | |
7a5fd60d | 8100 | gv = gv_fetchsv(sv, lref, SVt_PVCV); |
79072805 LW |
8101 | *gvp = gv; |
8102 | if (!gv) | |
8103 | return Nullcv; | |
8104 | *st = GvESTASH(gv); | |
8990e307 | 8105 | fix_gv: |
8ebc5c01 | 8106 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 8107 | SV *tmpsv; |
748a9306 | 8108 | ENTER; |
4633a7c4 | 8109 | tmpsv = NEWSV(704,0); |
16660edb | 8110 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
8111 | /* XXX this is probably not what they think they're getting. |
8112 | * It has the same effect as "sub name;", i.e. just a forward | |
8113 | * declaration! */ | |
774d564b | 8114 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
8115 | newSVOP(OP_CONST, 0, tmpsv), |
8116 | Nullop, | |
8990e307 | 8117 | Nullop); |
748a9306 | 8118 | LEAVE; |
8ebc5c01 | 8119 | if (!GvCVu(gv)) |
35c1215d NC |
8120 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
8121 | sv); | |
8990e307 | 8122 | } |
8ebc5c01 | 8123 | return GvCVu(gv); |
79072805 LW |
8124 | } |
8125 | } | |
8126 | ||
c461cf8f JH |
8127 | /* |
8128 | =for apidoc sv_true | |
8129 | ||
8130 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
8131 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
8132 | instead use an in-line version. | |
c461cf8f JH |
8133 | |
8134 | =cut | |
8135 | */ | |
8136 | ||
79072805 | 8137 | I32 |
864dbfa3 | 8138 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 8139 | { |
8990e307 LW |
8140 | if (!sv) |
8141 | return 0; | |
79072805 | 8142 | if (SvPOK(sv)) { |
e1ec3a88 | 8143 | const register XPV* tXpv; |
4e35701f | 8144 | if ((tXpv = (XPV*)SvANY(sv)) && |
c2f1de04 | 8145 | (tXpv->xpv_cur > 1 || |
4e35701f | 8146 | (tXpv->xpv_cur && *tXpv->xpv_pv != '0'))) |
79072805 LW |
8147 | return 1; |
8148 | else | |
8149 | return 0; | |
8150 | } | |
8151 | else { | |
8152 | if (SvIOK(sv)) | |
463ee0b2 | 8153 | return SvIVX(sv) != 0; |
79072805 LW |
8154 | else { |
8155 | if (SvNOK(sv)) | |
463ee0b2 | 8156 | return SvNVX(sv) != 0.0; |
79072805 | 8157 | else |
463ee0b2 | 8158 | return sv_2bool(sv); |
79072805 LW |
8159 | } |
8160 | } | |
8161 | } | |
79072805 | 8162 | |
645c22ef DM |
8163 | /* |
8164 | =for apidoc sv_iv | |
8165 | ||
8166 | A private implementation of the C<SvIVx> macro for compilers which can't | |
8167 | cope with complex macro expressions. Always use the macro instead. | |
8168 | ||
8169 | =cut | |
8170 | */ | |
8171 | ||
ff68c719 | 8172 | IV |
864dbfa3 | 8173 | Perl_sv_iv(pTHX_ register SV *sv) |
85e6fe83 | 8174 | { |
25da4f38 IZ |
8175 | if (SvIOK(sv)) { |
8176 | if (SvIsUV(sv)) | |
8177 | return (IV)SvUVX(sv); | |
ff68c719 | 8178 | return SvIVX(sv); |
25da4f38 | 8179 | } |
ff68c719 | 8180 | return sv_2iv(sv); |
85e6fe83 | 8181 | } |
85e6fe83 | 8182 | |
645c22ef DM |
8183 | /* |
8184 | =for apidoc sv_uv | |
8185 | ||
8186 | A private implementation of the C<SvUVx> macro for compilers which can't | |
8187 | cope with complex macro expressions. Always use the macro instead. | |
8188 | ||
8189 | =cut | |
8190 | */ | |
8191 | ||
ff68c719 | 8192 | UV |
864dbfa3 | 8193 | Perl_sv_uv(pTHX_ register SV *sv) |
ff68c719 | 8194 | { |
25da4f38 IZ |
8195 | if (SvIOK(sv)) { |
8196 | if (SvIsUV(sv)) | |
8197 | return SvUVX(sv); | |
8198 | return (UV)SvIVX(sv); | |
8199 | } | |
ff68c719 | 8200 | return sv_2uv(sv); |
8201 | } | |
85e6fe83 | 8202 | |
645c22ef DM |
8203 | /* |
8204 | =for apidoc sv_nv | |
8205 | ||
8206 | A private implementation of the C<SvNVx> macro for compilers which can't | |
8207 | cope with complex macro expressions. Always use the macro instead. | |
8208 | ||
8209 | =cut | |
8210 | */ | |
8211 | ||
65202027 | 8212 | NV |
864dbfa3 | 8213 | Perl_sv_nv(pTHX_ register SV *sv) |
79072805 | 8214 | { |
ff68c719 | 8215 | if (SvNOK(sv)) |
8216 | return SvNVX(sv); | |
8217 | return sv_2nv(sv); | |
79072805 | 8218 | } |
79072805 | 8219 | |
09540bc3 JH |
8220 | /* sv_pv() is now a macro using SvPV_nolen(); |
8221 | * this function provided for binary compatibility only | |
8222 | */ | |
8223 | ||
8224 | char * | |
8225 | Perl_sv_pv(pTHX_ SV *sv) | |
8226 | { | |
8227 | STRLEN n_a; | |
8228 | ||
8229 | if (SvPOK(sv)) | |
8230 | return SvPVX(sv); | |
8231 | ||
8232 | return sv_2pv(sv, &n_a); | |
8233 | } | |
8234 | ||
645c22ef DM |
8235 | /* |
8236 | =for apidoc sv_pv | |
8237 | ||
baca2b92 | 8238 | Use the C<SvPV_nolen> macro instead |
645c22ef | 8239 | |
645c22ef DM |
8240 | =for apidoc sv_pvn |
8241 | ||
8242 | A private implementation of the C<SvPV> macro for compilers which can't | |
8243 | cope with complex macro expressions. Always use the macro instead. | |
8244 | ||
8245 | =cut | |
8246 | */ | |
8247 | ||
1fa8b10d | 8248 | char * |
864dbfa3 | 8249 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) |
79072805 | 8250 | { |
85e6fe83 LW |
8251 | if (SvPOK(sv)) { |
8252 | *lp = SvCUR(sv); | |
a0d0e21e | 8253 | return SvPVX(sv); |
85e6fe83 | 8254 | } |
463ee0b2 | 8255 | return sv_2pv(sv, lp); |
79072805 | 8256 | } |
79072805 | 8257 | |
6e9d1081 NC |
8258 | |
8259 | char * | |
8260 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
8261 | { | |
8262 | if (SvPOK(sv)) { | |
8263 | *lp = SvCUR(sv); | |
8264 | return SvPVX(sv); | |
8265 | } | |
8266 | return sv_2pv_flags(sv, lp, 0); | |
8267 | } | |
8268 | ||
09540bc3 JH |
8269 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); |
8270 | * this function provided for binary compatibility only | |
8271 | */ | |
8272 | ||
8273 | char * | |
8274 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
8275 | { | |
8276 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
8277 | } | |
8278 | ||
c461cf8f JH |
8279 | /* |
8280 | =for apidoc sv_pvn_force | |
8281 | ||
8282 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
8283 | A private implementation of the C<SvPV_force> macro for compilers which |
8284 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 8285 | |
8d6d96c1 HS |
8286 | =for apidoc sv_pvn_force_flags |
8287 | ||
8288 | Get a sensible string out of the SV somehow. | |
8289 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
8290 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
8291 | implemented in terms of this function. | |
645c22ef DM |
8292 | You normally want to use the various wrapper macros instead: see |
8293 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
8294 | |
8295 | =cut | |
8296 | */ | |
8297 | ||
8298 | char * | |
8299 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
8300 | { | |
a0d0e21e | 8301 | |
6fc92669 | 8302 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 8303 | sv_force_normal_flags(sv, 0); |
1c846c1f | 8304 | |
a0d0e21e LW |
8305 | if (SvPOK(sv)) { |
8306 | *lp = SvCUR(sv); | |
8307 | } | |
8308 | else { | |
a3b680e6 | 8309 | char *s; |
748a9306 | 8310 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
cea2e8a9 | 8311 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 8312 | OP_NAME(PL_op)); |
a0d0e21e | 8313 | } |
4633a7c4 | 8314 | else |
8d6d96c1 | 8315 | s = sv_2pv_flags(sv, lp, flags); |
a0d0e21e | 8316 | if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */ |
a3b680e6 | 8317 | const STRLEN len = *lp; |
1c846c1f | 8318 | |
a0d0e21e LW |
8319 | if (SvROK(sv)) |
8320 | sv_unref(sv); | |
8321 | (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */ | |
8322 | SvGROW(sv, len + 1); | |
8323 | Move(s,SvPVX(sv),len,char); | |
8324 | SvCUR_set(sv, len); | |
8325 | *SvEND(sv) = '\0'; | |
8326 | } | |
8327 | if (!SvPOK(sv)) { | |
8328 | SvPOK_on(sv); /* validate pointer */ | |
8329 | SvTAINT(sv); | |
1d7c1841 GS |
8330 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
8331 | PTR2UV(sv),SvPVX(sv))); | |
a0d0e21e LW |
8332 | } |
8333 | } | |
8334 | return SvPVX(sv); | |
8335 | } | |
8336 | ||
09540bc3 JH |
8337 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); |
8338 | * this function provided for binary compatibility only | |
8339 | */ | |
8340 | ||
8341 | char * | |
8342 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
8343 | { | |
8344 | sv_utf8_downgrade(sv,0); | |
8345 | return sv_pv(sv); | |
8346 | } | |
8347 | ||
645c22ef DM |
8348 | /* |
8349 | =for apidoc sv_pvbyte | |
8350 | ||
baca2b92 | 8351 | Use C<SvPVbyte_nolen> instead. |
645c22ef | 8352 | |
645c22ef DM |
8353 | =for apidoc sv_pvbyten |
8354 | ||
8355 | A private implementation of the C<SvPVbyte> macro for compilers | |
8356 | which can't cope with complex macro expressions. Always use the macro | |
8357 | instead. | |
8358 | ||
8359 | =cut | |
8360 | */ | |
8361 | ||
7340a771 GS |
8362 | char * |
8363 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
8364 | { | |
ffebcc3e | 8365 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
8366 | return sv_pvn(sv,lp); |
8367 | } | |
8368 | ||
645c22ef DM |
8369 | /* |
8370 | =for apidoc sv_pvbyten_force | |
8371 | ||
8372 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
8373 | which can't cope with complex macro expressions. Always use the macro | |
8374 | instead. | |
8375 | ||
8376 | =cut | |
8377 | */ | |
8378 | ||
7340a771 GS |
8379 | char * |
8380 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
8381 | { | |
46ec2f14 | 8382 | sv_pvn_force(sv,lp); |
ffebcc3e | 8383 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
8384 | *lp = SvCUR(sv); |
8385 | return SvPVX(sv); | |
7340a771 GS |
8386 | } |
8387 | ||
09540bc3 JH |
8388 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
8389 | * this function provided for binary compatibility only | |
8390 | */ | |
8391 | ||
8392 | char * | |
8393 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
8394 | { | |
8395 | sv_utf8_upgrade(sv); | |
8396 | return sv_pv(sv); | |
8397 | } | |
8398 | ||
645c22ef DM |
8399 | /* |
8400 | =for apidoc sv_pvutf8 | |
8401 | ||
baca2b92 | 8402 | Use the C<SvPVutf8_nolen> macro instead |
645c22ef | 8403 | |
645c22ef DM |
8404 | =for apidoc sv_pvutf8n |
8405 | ||
8406 | A private implementation of the C<SvPVutf8> macro for compilers | |
8407 | which can't cope with complex macro expressions. Always use the macro | |
8408 | instead. | |
8409 | ||
8410 | =cut | |
8411 | */ | |
8412 | ||
7340a771 GS |
8413 | char * |
8414 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
8415 | { | |
560a288e | 8416 | sv_utf8_upgrade(sv); |
7340a771 GS |
8417 | return sv_pvn(sv,lp); |
8418 | } | |
8419 | ||
c461cf8f JH |
8420 | /* |
8421 | =for apidoc sv_pvutf8n_force | |
8422 | ||
645c22ef DM |
8423 | A private implementation of the C<SvPVutf8_force> macro for compilers |
8424 | which can't cope with complex macro expressions. Always use the macro | |
8425 | instead. | |
c461cf8f JH |
8426 | |
8427 | =cut | |
8428 | */ | |
8429 | ||
7340a771 GS |
8430 | char * |
8431 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
8432 | { | |
46ec2f14 | 8433 | sv_pvn_force(sv,lp); |
560a288e | 8434 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
8435 | *lp = SvCUR(sv); |
8436 | return SvPVX(sv); | |
7340a771 GS |
8437 | } |
8438 | ||
c461cf8f JH |
8439 | /* |
8440 | =for apidoc sv_reftype | |
8441 | ||
8442 | Returns a string describing what the SV is a reference to. | |
8443 | ||
8444 | =cut | |
8445 | */ | |
8446 | ||
1cb0ed9b | 8447 | char * |
bfed75c6 | 8448 | Perl_sv_reftype(pTHX_ const SV *sv, int ob) |
a0d0e21e | 8449 | { |
07409e01 NC |
8450 | /* The fact that I don't need to downcast to char * everywhere, only in ?: |
8451 | inside return suggests a const propagation bug in g++. */ | |
c86bf373 | 8452 | if (ob && SvOBJECT(sv)) { |
1cb0ed9b | 8453 | char *name = HvNAME(SvSTASH(sv)); |
07409e01 | 8454 | return name ? name : (char *) "__ANON__"; |
c86bf373 | 8455 | } |
a0d0e21e LW |
8456 | else { |
8457 | switch (SvTYPE(sv)) { | |
8458 | case SVt_NULL: | |
8459 | case SVt_IV: | |
8460 | case SVt_NV: | |
8461 | case SVt_RV: | |
8462 | case SVt_PV: | |
8463 | case SVt_PVIV: | |
8464 | case SVt_PVNV: | |
8465 | case SVt_PVMG: | |
8466 | case SVt_PVBM: | |
1cb0ed9b | 8467 | if (SvVOK(sv)) |
439cb1c4 | 8468 | return "VSTRING"; |
a0d0e21e LW |
8469 | if (SvROK(sv)) |
8470 | return "REF"; | |
8471 | else | |
8472 | return "SCALAR"; | |
1cb0ed9b | 8473 | |
07409e01 | 8474 | case SVt_PVLV: return (char *) (SvROK(sv) ? "REF" |
be65207d DM |
8475 | /* tied lvalues should appear to be |
8476 | * scalars for backwards compatitbility */ | |
8477 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
07409e01 | 8478 | ? "SCALAR" : "LVALUE"); |
a0d0e21e LW |
8479 | case SVt_PVAV: return "ARRAY"; |
8480 | case SVt_PVHV: return "HASH"; | |
8481 | case SVt_PVCV: return "CODE"; | |
8482 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 8483 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 8484 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
8485 | default: return "UNKNOWN"; |
8486 | } | |
8487 | } | |
8488 | } | |
8489 | ||
954c1994 GS |
8490 | /* |
8491 | =for apidoc sv_isobject | |
8492 | ||
8493 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
8494 | object. If the SV is not an RV, or if the object is not blessed, then this | |
8495 | will return false. | |
8496 | ||
8497 | =cut | |
8498 | */ | |
8499 | ||
463ee0b2 | 8500 | int |
864dbfa3 | 8501 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 8502 | { |
68dc0745 | 8503 | if (!sv) |
8504 | return 0; | |
8505 | if (SvGMAGICAL(sv)) | |
8506 | mg_get(sv); | |
85e6fe83 LW |
8507 | if (!SvROK(sv)) |
8508 | return 0; | |
8509 | sv = (SV*)SvRV(sv); | |
8510 | if (!SvOBJECT(sv)) | |
8511 | return 0; | |
8512 | return 1; | |
8513 | } | |
8514 | ||
954c1994 GS |
8515 | /* |
8516 | =for apidoc sv_isa | |
8517 | ||
8518 | Returns a boolean indicating whether the SV is blessed into the specified | |
8519 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
8520 | an inheritance relationship. | |
8521 | ||
8522 | =cut | |
8523 | */ | |
8524 | ||
85e6fe83 | 8525 | int |
864dbfa3 | 8526 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 8527 | { |
68dc0745 | 8528 | if (!sv) |
8529 | return 0; | |
8530 | if (SvGMAGICAL(sv)) | |
8531 | mg_get(sv); | |
ed6116ce | 8532 | if (!SvROK(sv)) |
463ee0b2 | 8533 | return 0; |
ed6116ce LW |
8534 | sv = (SV*)SvRV(sv); |
8535 | if (!SvOBJECT(sv)) | |
463ee0b2 | 8536 | return 0; |
e27ad1f2 AV |
8537 | if (!HvNAME(SvSTASH(sv))) |
8538 | return 0; | |
463ee0b2 LW |
8539 | |
8540 | return strEQ(HvNAME(SvSTASH(sv)), name); | |
8541 | } | |
8542 | ||
954c1994 GS |
8543 | /* |
8544 | =for apidoc newSVrv | |
8545 | ||
8546 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
8547 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
8548 | be blessed in the specified package. The new SV is returned and its | |
8549 | reference count is 1. | |
8550 | ||
8551 | =cut | |
8552 | */ | |
8553 | ||
463ee0b2 | 8554 | SV* |
864dbfa3 | 8555 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 8556 | { |
463ee0b2 LW |
8557 | SV *sv; |
8558 | ||
4561caa4 | 8559 | new_SV(sv); |
51cf62d8 | 8560 | |
765f542d | 8561 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 8562 | SvAMAGIC_off(rv); |
51cf62d8 | 8563 | |
0199fce9 | 8564 | if (SvTYPE(rv) >= SVt_PVMG) { |
a3b680e6 | 8565 | const U32 refcnt = SvREFCNT(rv); |
0199fce9 JD |
8566 | SvREFCNT(rv) = 0; |
8567 | sv_clear(rv); | |
8568 | SvFLAGS(rv) = 0; | |
8569 | SvREFCNT(rv) = refcnt; | |
8570 | } | |
8571 | ||
51cf62d8 | 8572 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
8573 | sv_upgrade(rv, SVt_RV); |
8574 | else if (SvTYPE(rv) > SVt_RV) { | |
8bd4d4c5 | 8575 | SvPV_free(rv); |
0199fce9 JD |
8576 | SvCUR_set(rv, 0); |
8577 | SvLEN_set(rv, 0); | |
8578 | } | |
51cf62d8 | 8579 | |
0c34ef67 | 8580 | SvOK_off(rv); |
b162af07 | 8581 | SvRV_set(rv, sv); |
ed6116ce | 8582 | SvROK_on(rv); |
463ee0b2 | 8583 | |
a0d0e21e LW |
8584 | if (classname) { |
8585 | HV* stash = gv_stashpv(classname, TRUE); | |
8586 | (void)sv_bless(rv, stash); | |
8587 | } | |
8588 | return sv; | |
8589 | } | |
8590 | ||
954c1994 GS |
8591 | /* |
8592 | =for apidoc sv_setref_pv | |
8593 | ||
8594 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
8595 | argument will be upgraded to an RV. That RV will be modified to point to | |
8596 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
8597 | into the SV. The C<classname> argument indicates the package for the | |
8598 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8599 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8600 | |
8601 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
8602 | objects will become corrupted by the pointer copy process. | |
8603 | ||
8604 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
8605 | ||
8606 | =cut | |
8607 | */ | |
8608 | ||
a0d0e21e | 8609 | SV* |
864dbfa3 | 8610 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 8611 | { |
189b2af5 | 8612 | if (!pv) { |
3280af22 | 8613 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
8614 | SvSETMAGIC(rv); |
8615 | } | |
a0d0e21e | 8616 | else |
56431972 | 8617 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
8618 | return rv; |
8619 | } | |
8620 | ||
954c1994 GS |
8621 | /* |
8622 | =for apidoc sv_setref_iv | |
8623 | ||
8624 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
8625 | argument will be upgraded to an RV. That RV will be modified to point to | |
8626 | the new SV. The C<classname> argument indicates the package for the | |
8627 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8628 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8629 | |
8630 | =cut | |
8631 | */ | |
8632 | ||
a0d0e21e | 8633 | SV* |
864dbfa3 | 8634 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
8635 | { |
8636 | sv_setiv(newSVrv(rv,classname), iv); | |
8637 | return rv; | |
8638 | } | |
8639 | ||
954c1994 | 8640 | /* |
e1c57cef JH |
8641 | =for apidoc sv_setref_uv |
8642 | ||
8643 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
8644 | argument will be upgraded to an RV. That RV will be modified to point to | |
8645 | the new SV. The C<classname> argument indicates the package for the | |
8646 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8647 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
8648 | |
8649 | =cut | |
8650 | */ | |
8651 | ||
8652 | SV* | |
8653 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
8654 | { | |
8655 | sv_setuv(newSVrv(rv,classname), uv); | |
8656 | return rv; | |
8657 | } | |
8658 | ||
8659 | /* | |
954c1994 GS |
8660 | =for apidoc sv_setref_nv |
8661 | ||
8662 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
8663 | argument will be upgraded to an RV. That RV will be modified to point to | |
8664 | the new SV. The C<classname> argument indicates the package for the | |
8665 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8666 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8667 | |
8668 | =cut | |
8669 | */ | |
8670 | ||
a0d0e21e | 8671 | SV* |
65202027 | 8672 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
8673 | { |
8674 | sv_setnv(newSVrv(rv,classname), nv); | |
8675 | return rv; | |
8676 | } | |
463ee0b2 | 8677 | |
954c1994 GS |
8678 | /* |
8679 | =for apidoc sv_setref_pvn | |
8680 | ||
8681 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
8682 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
8683 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
8684 | argument indicates the package for the blessing. Set C<classname> to | |
7a5fa8a2 | 8685 | C<Nullch> to avoid the blessing. The new SV will have a reference count |
d34c2299 | 8686 | of 1, and the RV will be returned. |
954c1994 GS |
8687 | |
8688 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
8689 | ||
8690 | =cut | |
8691 | */ | |
8692 | ||
a0d0e21e | 8693 | SV* |
864dbfa3 | 8694 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n) |
a0d0e21e LW |
8695 | { |
8696 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
8697 | return rv; |
8698 | } | |
8699 | ||
954c1994 GS |
8700 | /* |
8701 | =for apidoc sv_bless | |
8702 | ||
8703 | Blesses an SV into a specified package. The SV must be an RV. The package | |
8704 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
8705 | of the SV is unaffected. | |
8706 | ||
8707 | =cut | |
8708 | */ | |
8709 | ||
a0d0e21e | 8710 | SV* |
864dbfa3 | 8711 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 8712 | { |
76e3520e | 8713 | SV *tmpRef; |
a0d0e21e | 8714 | if (!SvROK(sv)) |
cea2e8a9 | 8715 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
8716 | tmpRef = SvRV(sv); |
8717 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
8718 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 8719 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
8720 | if (SvOBJECT(tmpRef)) { |
8721 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8722 | --PL_sv_objcount; |
76e3520e | 8723 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 8724 | } |
a0d0e21e | 8725 | } |
76e3520e GS |
8726 | SvOBJECT_on(tmpRef); |
8727 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8728 | ++PL_sv_objcount; |
76e3520e | 8729 | (void)SvUPGRADE(tmpRef, SVt_PVMG); |
b162af07 | 8730 | SvSTASH_set(tmpRef, (HV*)SvREFCNT_inc(stash)); |
a0d0e21e | 8731 | |
2e3febc6 CS |
8732 | if (Gv_AMG(stash)) |
8733 | SvAMAGIC_on(sv); | |
8734 | else | |
8735 | SvAMAGIC_off(sv); | |
a0d0e21e | 8736 | |
1edbfb88 AB |
8737 | if(SvSMAGICAL(tmpRef)) |
8738 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
8739 | mg_set(tmpRef); | |
8740 | ||
8741 | ||
ecdeb87c | 8742 | |
a0d0e21e LW |
8743 | return sv; |
8744 | } | |
8745 | ||
645c22ef | 8746 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
8747 | */ |
8748 | ||
76e3520e | 8749 | STATIC void |
cea2e8a9 | 8750 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 8751 | { |
850fabdf GS |
8752 | void *xpvmg; |
8753 | ||
a0d0e21e LW |
8754 | assert(SvTYPE(sv) == SVt_PVGV); |
8755 | SvFAKE_off(sv); | |
8756 | if (GvGP(sv)) | |
1edc1566 | 8757 | gp_free((GV*)sv); |
e826b3c7 GS |
8758 | if (GvSTASH(sv)) { |
8759 | SvREFCNT_dec(GvSTASH(sv)); | |
8760 | GvSTASH(sv) = Nullhv; | |
8761 | } | |
14befaf4 | 8762 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8763 | Safefree(GvNAME(sv)); |
a5f75d66 | 8764 | GvMULTI_off(sv); |
850fabdf GS |
8765 | |
8766 | /* need to keep SvANY(sv) in the right arena */ | |
8767 | xpvmg = new_XPVMG(); | |
8768 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8769 | del_XPVGV(SvANY(sv)); | |
8770 | SvANY(sv) = xpvmg; | |
8771 | ||
a0d0e21e LW |
8772 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8773 | SvFLAGS(sv) |= SVt_PVMG; | |
8774 | } | |
8775 | ||
954c1994 | 8776 | /* |
840a7b70 | 8777 | =for apidoc sv_unref_flags |
954c1994 GS |
8778 | |
8779 | Unsets the RV status of the SV, and decrements the reference count of | |
8780 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8781 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8782 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8783 | (otherwise the decrementing is conditional on the reference count being | |
8784 | different from one or the reference being a readonly SV). | |
7889fe52 | 8785 | See C<SvROK_off>. |
954c1994 GS |
8786 | |
8787 | =cut | |
8788 | */ | |
8789 | ||
ed6116ce | 8790 | void |
840a7b70 | 8791 | Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags) |
ed6116ce | 8792 | { |
a0d0e21e | 8793 | SV* rv = SvRV(sv); |
810b8aa5 GS |
8794 | |
8795 | if (SvWEAKREF(sv)) { | |
8796 | sv_del_backref(sv); | |
8797 | SvWEAKREF_off(sv); | |
b162af07 | 8798 | SvRV_set(sv, NULL); |
810b8aa5 GS |
8799 | return; |
8800 | } | |
b162af07 | 8801 | SvRV_set(sv, NULL); |
ed6116ce | 8802 | SvROK_off(sv); |
04ca4930 NC |
8803 | /* You can't have a || SvREADONLY(rv) here, as $a = $$a, where $a was |
8804 | assigned to as BEGIN {$a = \"Foo"} will fail. */ | |
8805 | if (SvREFCNT(rv) != 1 || (flags & SV_IMMEDIATE_UNREF)) | |
4633a7c4 | 8806 | SvREFCNT_dec(rv); |
840a7b70 | 8807 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
4633a7c4 | 8808 | sv_2mortal(rv); /* Schedule for freeing later */ |
ed6116ce | 8809 | } |
8990e307 | 8810 | |
840a7b70 IZ |
8811 | /* |
8812 | =for apidoc sv_unref | |
8813 | ||
8814 | Unsets the RV status of the SV, and decrements the reference count of | |
8815 | whatever was being referenced by the RV. This can almost be thought of | |
8816 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
7889fe52 | 8817 | being zero. See C<SvROK_off>. |
840a7b70 IZ |
8818 | |
8819 | =cut | |
8820 | */ | |
8821 | ||
8822 | void | |
8823 | Perl_sv_unref(pTHX_ SV *sv) | |
8824 | { | |
8825 | sv_unref_flags(sv, 0); | |
8826 | } | |
8827 | ||
645c22ef DM |
8828 | /* |
8829 | =for apidoc sv_taint | |
8830 | ||
8831 | Taint an SV. Use C<SvTAINTED_on> instead. | |
8832 | =cut | |
8833 | */ | |
8834 | ||
bbce6d69 | 8835 | void |
864dbfa3 | 8836 | Perl_sv_taint(pTHX_ SV *sv) |
bbce6d69 | 8837 | { |
14befaf4 | 8838 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); |
bbce6d69 | 8839 | } |
8840 | ||
645c22ef DM |
8841 | /* |
8842 | =for apidoc sv_untaint | |
8843 | ||
8844 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8845 | =cut | |
8846 | */ | |
8847 | ||
bbce6d69 | 8848 | void |
864dbfa3 | 8849 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8850 | { |
13f57bf8 | 8851 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8852 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8853 | if (mg) |
565764a8 | 8854 | mg->mg_len &= ~1; |
36477c24 | 8855 | } |
bbce6d69 | 8856 | } |
8857 | ||
645c22ef DM |
8858 | /* |
8859 | =for apidoc sv_tainted | |
8860 | ||
8861 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8862 | =cut | |
8863 | */ | |
8864 | ||
bbce6d69 | 8865 | bool |
864dbfa3 | 8866 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8867 | { |
13f57bf8 | 8868 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8869 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
155aba94 | 8870 | if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv))) |
36477c24 | 8871 | return TRUE; |
8872 | } | |
8873 | return FALSE; | |
bbce6d69 | 8874 | } |
8875 | ||
09540bc3 JH |
8876 | /* |
8877 | =for apidoc sv_setpviv | |
8878 | ||
8879 | Copies an integer into the given SV, also updating its string value. | |
8880 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8881 | ||
8882 | =cut | |
8883 | */ | |
8884 | ||
8885 | void | |
8886 | Perl_sv_setpviv(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 | } | |
8894 | ||
8895 | /* | |
8896 | =for apidoc sv_setpviv_mg | |
8897 | ||
8898 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8899 | ||
8900 | =cut | |
8901 | */ | |
8902 | ||
8903 | void | |
8904 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8905 | { | |
8906 | char buf[TYPE_CHARS(UV)]; | |
8907 | char *ebuf; | |
8908 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8909 | ||
8910 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8911 | SvSETMAGIC(sv); | |
8912 | } | |
8913 | ||
cea2e8a9 | 8914 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8915 | |
8916 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8917 | * version of the main function, (which may itself be aliased to us). | |
8918 | * Don't access this version directly. | |
8919 | */ | |
8920 | ||
cea2e8a9 GS |
8921 | void |
8922 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8923 | { | |
8924 | dTHX; | |
8925 | va_list args; | |
8926 | va_start(args, pat); | |
c5be433b | 8927 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8928 | va_end(args); |
8929 | } | |
8930 | ||
645c22ef DM |
8931 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8932 | * version of the main function, (which may itself be aliased to us). | |
8933 | * Don't access this version directly. | |
8934 | */ | |
cea2e8a9 GS |
8935 | |
8936 | void | |
8937 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8938 | { | |
8939 | dTHX; | |
8940 | va_list args; | |
8941 | va_start(args, pat); | |
c5be433b | 8942 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8943 | va_end(args); |
cea2e8a9 GS |
8944 | } |
8945 | #endif | |
8946 | ||
954c1994 GS |
8947 | /* |
8948 | =for apidoc sv_setpvf | |
8949 | ||
bffc3d17 SH |
8950 | Works like C<sv_catpvf> but copies the text into the SV instead of |
8951 | appending it. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
954c1994 GS |
8952 | |
8953 | =cut | |
8954 | */ | |
8955 | ||
46fc3d4c | 8956 | void |
864dbfa3 | 8957 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8958 | { |
8959 | va_list args; | |
46fc3d4c | 8960 | va_start(args, pat); |
c5be433b | 8961 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8962 | va_end(args); |
8963 | } | |
8964 | ||
bffc3d17 SH |
8965 | /* |
8966 | =for apidoc sv_vsetpvf | |
8967 | ||
8968 | Works like C<sv_vcatpvf> but copies the text into the SV instead of | |
8969 | appending it. Does not handle 'set' magic. See C<sv_vsetpvf_mg>. | |
8970 | ||
8971 | Usually used via its frontend C<sv_setpvf>. | |
8972 | ||
8973 | =cut | |
8974 | */ | |
645c22ef | 8975 | |
c5be433b GS |
8976 | void |
8977 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8978 | { | |
8979 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8980 | } | |
ef50df4b | 8981 | |
954c1994 GS |
8982 | /* |
8983 | =for apidoc sv_setpvf_mg | |
8984 | ||
8985 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8986 | ||
8987 | =cut | |
8988 | */ | |
8989 | ||
ef50df4b | 8990 | void |
864dbfa3 | 8991 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8992 | { |
8993 | va_list args; | |
ef50df4b | 8994 | va_start(args, pat); |
c5be433b | 8995 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8996 | va_end(args); |
c5be433b GS |
8997 | } |
8998 | ||
bffc3d17 SH |
8999 | /* |
9000 | =for apidoc sv_vsetpvf_mg | |
9001 | ||
9002 | Like C<sv_vsetpvf>, but also handles 'set' magic. | |
9003 | ||
9004 | Usually used via its frontend C<sv_setpvf_mg>. | |
9005 | ||
9006 | =cut | |
9007 | */ | |
645c22ef | 9008 | |
c5be433b GS |
9009 | void |
9010 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
9011 | { | |
9012 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
9013 | SvSETMAGIC(sv); |
9014 | } | |
9015 | ||
cea2e8a9 | 9016 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
9017 | |
9018 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
9019 | * version of the main function, (which may itself be aliased to us). | |
9020 | * Don't access this version directly. | |
9021 | */ | |
9022 | ||
cea2e8a9 GS |
9023 | void |
9024 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
9025 | { | |
9026 | dTHX; | |
9027 | va_list args; | |
9028 | va_start(args, pat); | |
c5be433b | 9029 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
9030 | va_end(args); |
9031 | } | |
9032 | ||
645c22ef DM |
9033 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
9034 | * version of the main function, (which may itself be aliased to us). | |
9035 | * Don't access this version directly. | |
9036 | */ | |
9037 | ||
cea2e8a9 GS |
9038 | void |
9039 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
9040 | { | |
9041 | dTHX; | |
9042 | va_list args; | |
9043 | va_start(args, pat); | |
c5be433b | 9044 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 9045 | va_end(args); |
cea2e8a9 GS |
9046 | } |
9047 | #endif | |
9048 | ||
954c1994 GS |
9049 | /* |
9050 | =for apidoc sv_catpvf | |
9051 | ||
d5ce4a7c GA |
9052 | Processes its arguments like C<sprintf> and appends the formatted |
9053 | output to an SV. If the appended data contains "wide" characters | |
9054 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
9055 | and characters >255 formatted with %c), the original SV might get | |
bffc3d17 | 9056 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. See |
cdd94ca7 NC |
9057 | C<sv_catpvf_mg>. If the original SV was UTF-8, the pattern should be |
9058 | valid UTF-8; if the original SV was bytes, the pattern should be too. | |
954c1994 | 9059 | |
d5ce4a7c | 9060 | =cut */ |
954c1994 | 9061 | |
46fc3d4c | 9062 | void |
864dbfa3 | 9063 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 9064 | { |
9065 | va_list args; | |
46fc3d4c | 9066 | va_start(args, pat); |
c5be433b | 9067 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 9068 | va_end(args); |
9069 | } | |
9070 | ||
bffc3d17 SH |
9071 | /* |
9072 | =for apidoc sv_vcatpvf | |
9073 | ||
9074 | Processes its arguments like C<vsprintf> and appends the formatted output | |
9075 | to an SV. Does not handle 'set' magic. See C<sv_vcatpvf_mg>. | |
9076 | ||
9077 | Usually used via its frontend C<sv_catpvf>. | |
9078 | ||
9079 | =cut | |
9080 | */ | |
645c22ef | 9081 | |
ef50df4b | 9082 | void |
c5be433b GS |
9083 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
9084 | { | |
9085 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
9086 | } | |
9087 | ||
954c1994 GS |
9088 | /* |
9089 | =for apidoc sv_catpvf_mg | |
9090 | ||
9091 | Like C<sv_catpvf>, but also handles 'set' magic. | |
9092 | ||
9093 | =cut | |
9094 | */ | |
9095 | ||
c5be433b | 9096 | void |
864dbfa3 | 9097 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
9098 | { |
9099 | va_list args; | |
ef50df4b | 9100 | va_start(args, pat); |
c5be433b | 9101 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 9102 | va_end(args); |
c5be433b GS |
9103 | } |
9104 | ||
bffc3d17 SH |
9105 | /* |
9106 | =for apidoc sv_vcatpvf_mg | |
9107 | ||
9108 | Like C<sv_vcatpvf>, but also handles 'set' magic. | |
9109 | ||
9110 | Usually used via its frontend C<sv_catpvf_mg>. | |
9111 | ||
9112 | =cut | |
9113 | */ | |
645c22ef | 9114 | |
c5be433b GS |
9115 | void |
9116 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
9117 | { | |
9118 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
9119 | SvSETMAGIC(sv); |
9120 | } | |
9121 | ||
954c1994 GS |
9122 | /* |
9123 | =for apidoc sv_vsetpvfn | |
9124 | ||
bffc3d17 | 9125 | Works like C<sv_vcatpvfn> but copies the text into the SV instead of |
954c1994 GS |
9126 | appending it. |
9127 | ||
bffc3d17 | 9128 | Usually used via one of its frontends C<sv_vsetpvf> and C<sv_vsetpvf_mg>. |
645c22ef | 9129 | |
954c1994 GS |
9130 | =cut |
9131 | */ | |
9132 | ||
46fc3d4c | 9133 | void |
7d5ea4e7 | 9134 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9135 | { |
9136 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 9137 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 9138 | } |
9139 | ||
645c22ef DM |
9140 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
9141 | ||
2d00ba3b | 9142 | STATIC I32 |
9dd79c3f | 9143 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
9144 | { |
9145 | I32 var = 0; | |
9146 | switch (**pattern) { | |
9147 | case '1': case '2': case '3': | |
9148 | case '4': case '5': case '6': | |
9149 | case '7': case '8': case '9': | |
9150 | while (isDIGIT(**pattern)) | |
9151 | var = var * 10 + (*(*pattern)++ - '0'); | |
9152 | } | |
9153 | return var; | |
9154 | } | |
9dd79c3f | 9155 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 9156 | |
4151a5fe IZ |
9157 | static char * |
9158 | F0convert(NV nv, char *endbuf, STRLEN *len) | |
9159 | { | |
a3b680e6 | 9160 | const int neg = nv < 0; |
4151a5fe IZ |
9161 | UV uv; |
9162 | char *p = endbuf; | |
9163 | ||
9164 | if (neg) | |
9165 | nv = -nv; | |
9166 | if (nv < UV_MAX) { | |
9167 | nv += 0.5; | |
028f8eaa | 9168 | uv = (UV)nv; |
4151a5fe IZ |
9169 | if (uv & 1 && uv == nv) |
9170 | uv--; /* Round to even */ | |
9171 | do { | |
a3b680e6 | 9172 | const unsigned dig = uv % 10; |
4151a5fe IZ |
9173 | *--p = '0' + dig; |
9174 | } while (uv /= 10); | |
9175 | if (neg) | |
9176 | *--p = '-'; | |
9177 | *len = endbuf - p; | |
9178 | return p; | |
9179 | } | |
9180 | return Nullch; | |
9181 | } | |
9182 | ||
9183 | ||
954c1994 GS |
9184 | /* |
9185 | =for apidoc sv_vcatpvfn | |
9186 | ||
9187 | Processes its arguments like C<vsprintf> and appends the formatted output | |
9188 | to an SV. Uses an array of SVs if the C style variable argument list is | |
9189 | missing (NULL). When running with taint checks enabled, indicates via | |
9190 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
9191 | locales). | |
9192 | ||
bffc3d17 | 9193 | Usually used via one of its frontends C<sv_vcatpvf> and C<sv_vcatpvf_mg>. |
645c22ef | 9194 | |
954c1994 GS |
9195 | =cut |
9196 | */ | |
9197 | ||
1ef29b0e RGS |
9198 | /* XXX maybe_tainted is never assigned to, so the doc above is lying. */ |
9199 | ||
46fc3d4c | 9200 | void |
7d5ea4e7 | 9201 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9202 | { |
9203 | char *p; | |
9204 | char *q; | |
a3b680e6 | 9205 | const char *patend; |
fc36a67e | 9206 | STRLEN origlen; |
46fc3d4c | 9207 | I32 svix = 0; |
27da23d5 | 9208 | static const char nullstr[] = "(null)"; |
9c5ffd7c | 9209 | SV *argsv = Nullsv; |
db79b45b JH |
9210 | bool has_utf8; /* has the result utf8? */ |
9211 | bool pat_utf8; /* the pattern is in utf8? */ | |
9212 | SV *nsv = Nullsv; | |
4151a5fe IZ |
9213 | /* Times 4: a decimal digit takes more than 3 binary digits. |
9214 | * NV_DIG: mantissa takes than many decimal digits. | |
9215 | * Plus 32: Playing safe. */ | |
9216 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
9217 | /* large enough for "%#.#f" --chip */ | |
9218 | /* what about long double NVs? --jhi */ | |
db79b45b JH |
9219 | |
9220 | has_utf8 = pat_utf8 = DO_UTF8(sv); | |
46fc3d4c | 9221 | |
9222 | /* no matter what, this is a string now */ | |
fc36a67e | 9223 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 9224 | |
0dbb1585 | 9225 | /* special-case "", "%s", and "%-p" (SVf) */ |
46fc3d4c | 9226 | if (patlen == 0) |
9227 | return; | |
0dbb1585 | 9228 | if (patlen == 2 && pat[0] == '%' && pat[1] == 's') { |
c635e13b | 9229 | if (args) { |
73d840c0 | 9230 | const char *s = va_arg(*args, char*); |
c635e13b | 9231 | sv_catpv(sv, s ? s : nullstr); |
9232 | } | |
7e2040f0 | 9233 | else if (svix < svmax) { |
fc36a67e | 9234 | sv_catsv(sv, *svargs); |
7e2040f0 GS |
9235 | if (DO_UTF8(*svargs)) |
9236 | SvUTF8_on(sv); | |
9237 | } | |
fc36a67e | 9238 | return; |
0dbb1585 AL |
9239 | } |
9240 | if (patlen == 3 && pat[0] == '%' && | |
9241 | pat[1] == '-' && pat[2] == 'p') { | |
fc36a67e | 9242 | if (args) { |
7e2040f0 GS |
9243 | argsv = va_arg(*args, SV*); |
9244 | sv_catsv(sv, argsv); | |
9245 | if (DO_UTF8(argsv)) | |
9246 | SvUTF8_on(sv); | |
fc36a67e | 9247 | return; |
9248 | } | |
46fc3d4c | 9249 | } |
9250 | ||
1d917b39 | 9251 | #ifndef USE_LONG_DOUBLE |
4151a5fe IZ |
9252 | /* special-case "%.<number>[gf]" */ |
9253 | if ( patlen <= 5 && pat[0] == '%' && pat[1] == '.' | |
9254 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { | |
9255 | unsigned digits = 0; | |
9256 | const char *pp; | |
9257 | ||
9258 | pp = pat + 2; | |
9259 | while (*pp >= '0' && *pp <= '9') | |
9260 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 9261 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
9262 | NV nv; |
9263 | ||
9264 | if (args) | |
9265 | nv = (NV)va_arg(*args, double); | |
9266 | else if (svix < svmax) | |
9267 | nv = SvNV(*svargs); | |
9268 | else | |
9269 | return; | |
9270 | if (*pp == 'g') { | |
2873255c NC |
9271 | /* Add check for digits != 0 because it seems that some |
9272 | gconverts are buggy in this case, and we don't yet have | |
9273 | a Configure test for this. */ | |
9274 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
9275 | /* 0, point, slack */ | |
2e59c212 | 9276 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
9277 | sv_catpv(sv, ebuf); |
9278 | if (*ebuf) /* May return an empty string for digits==0 */ | |
9279 | return; | |
9280 | } | |
9281 | } else if (!digits) { | |
9282 | STRLEN l; | |
9283 | ||
9284 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
9285 | sv_catpvn(sv, p, l); | |
9286 | return; | |
9287 | } | |
9288 | } | |
9289 | } | |
9290 | } | |
1d917b39 | 9291 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 9292 | |
2cf2cfc6 | 9293 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 9294 | has_utf8 = TRUE; |
2cf2cfc6 | 9295 | |
46fc3d4c | 9296 | patend = (char*)pat + patlen; |
9297 | for (p = (char*)pat; p < patend; p = q) { | |
9298 | bool alt = FALSE; | |
9299 | bool left = FALSE; | |
b22c7a20 | 9300 | bool vectorize = FALSE; |
211dfcf1 | 9301 | bool vectorarg = FALSE; |
2cf2cfc6 | 9302 | bool vec_utf8 = FALSE; |
46fc3d4c | 9303 | char fill = ' '; |
9304 | char plus = 0; | |
9305 | char intsize = 0; | |
9306 | STRLEN width = 0; | |
fc36a67e | 9307 | STRLEN zeros = 0; |
46fc3d4c | 9308 | bool has_precis = FALSE; |
9309 | STRLEN precis = 0; | |
58e33a90 | 9310 | I32 osvix = svix; |
2cf2cfc6 | 9311 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
9312 | #ifdef HAS_LDBL_SPRINTF_BUG |
9313 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 9314 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
9315 | bool fix_ldbl_sprintf_bug = FALSE; |
9316 | #endif | |
205f51d8 | 9317 | |
46fc3d4c | 9318 | char esignbuf[4]; |
89ebb4a3 | 9319 | U8 utf8buf[UTF8_MAXBYTES+1]; |
46fc3d4c | 9320 | STRLEN esignlen = 0; |
9321 | ||
9322 | char *eptr = Nullch; | |
fc36a67e | 9323 | STRLEN elen = 0; |
81f715da | 9324 | SV *vecsv = Nullsv; |
a05b299f | 9325 | U8 *vecstr = Null(U8*); |
b22c7a20 | 9326 | STRLEN veclen = 0; |
934abaf1 | 9327 | char c = 0; |
46fc3d4c | 9328 | int i; |
9c5ffd7c | 9329 | unsigned base = 0; |
8c8eb53c RB |
9330 | IV iv = 0; |
9331 | UV uv = 0; | |
9e5b023a JH |
9332 | /* we need a long double target in case HAS_LONG_DOUBLE but |
9333 | not USE_LONG_DOUBLE | |
9334 | */ | |
35fff930 | 9335 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
9336 | long double nv; |
9337 | #else | |
65202027 | 9338 | NV nv; |
9e5b023a | 9339 | #endif |
46fc3d4c | 9340 | STRLEN have; |
9341 | STRLEN need; | |
9342 | STRLEN gap; | |
e1ec3a88 | 9343 | const char *dotstr = "."; |
b22c7a20 | 9344 | STRLEN dotstrlen = 1; |
211dfcf1 | 9345 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 9346 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
9347 | I32 epix = 0; /* explicit precision index */ |
9348 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 9349 | bool asterisk = FALSE; |
46fc3d4c | 9350 | |
211dfcf1 | 9351 | /* echo everything up to the next format specification */ |
46fc3d4c | 9352 | for (q = p; q < patend && *q != '%'; ++q) ; |
9353 | if (q > p) { | |
db79b45b JH |
9354 | if (has_utf8 && !pat_utf8) |
9355 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
9356 | else | |
9357 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 9358 | p = q; |
9359 | } | |
9360 | if (q++ >= patend) | |
9361 | break; | |
9362 | ||
211dfcf1 HS |
9363 | /* |
9364 | We allow format specification elements in this order: | |
9365 | \d+\$ explicit format parameter index | |
9366 | [-+ 0#]+ flags | |
a472f209 | 9367 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 9368 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
9369 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
9370 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
9371 | [hlqLV] size | |
9372 | [%bcdefginopsux_DFOUX] format (mandatory) | |
9373 | */ | |
9374 | if (EXPECT_NUMBER(q, width)) { | |
9375 | if (*q == '$') { | |
9376 | ++q; | |
9377 | efix = width; | |
9378 | } else { | |
9379 | goto gotwidth; | |
9380 | } | |
9381 | } | |
9382 | ||
fc36a67e | 9383 | /* FLAGS */ |
9384 | ||
46fc3d4c | 9385 | while (*q) { |
9386 | switch (*q) { | |
9387 | case ' ': | |
9388 | case '+': | |
9389 | plus = *q++; | |
9390 | continue; | |
9391 | ||
9392 | case '-': | |
9393 | left = TRUE; | |
9394 | q++; | |
9395 | continue; | |
9396 | ||
9397 | case '0': | |
9398 | fill = *q++; | |
9399 | continue; | |
9400 | ||
9401 | case '#': | |
9402 | alt = TRUE; | |
9403 | q++; | |
9404 | continue; | |
9405 | ||
fc36a67e | 9406 | default: |
9407 | break; | |
9408 | } | |
9409 | break; | |
9410 | } | |
46fc3d4c | 9411 | |
211dfcf1 | 9412 | tryasterisk: |
eb3fce90 | 9413 | if (*q == '*') { |
211dfcf1 HS |
9414 | q++; |
9415 | if (EXPECT_NUMBER(q, ewix)) | |
9416 | if (*q++ != '$') | |
9417 | goto unknown; | |
eb3fce90 | 9418 | asterisk = TRUE; |
211dfcf1 HS |
9419 | } |
9420 | if (*q == 'v') { | |
eb3fce90 | 9421 | q++; |
211dfcf1 HS |
9422 | if (vectorize) |
9423 | goto unknown; | |
9cbac4c7 | 9424 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
9425 | evix = ewix; |
9426 | ewix = 0; | |
9427 | asterisk = FALSE; | |
9428 | } | |
9429 | vectorize = TRUE; | |
9430 | goto tryasterisk; | |
eb3fce90 JH |
9431 | } |
9432 | ||
211dfcf1 | 9433 | if (!asterisk) |
7a5fa8a2 | 9434 | if( *q == '0' ) |
f3583277 | 9435 | fill = *q++; |
211dfcf1 HS |
9436 | EXPECT_NUMBER(q, width); |
9437 | ||
9438 | if (vectorize) { | |
9439 | if (vectorarg) { | |
9440 | if (args) | |
9441 | vecsv = va_arg(*args, SV*); | |
9442 | else | |
9443 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
3a7a539e | 9444 | svargs[evix ? evix-1 : svix++] : &PL_sv_undef; |
4459522c | 9445 | dotstr = SvPVx(vecsv, dotstrlen); |
211dfcf1 | 9446 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 9447 | is_utf8 = TRUE; |
211dfcf1 HS |
9448 | } |
9449 | if (args) { | |
9450 | vecsv = va_arg(*args, SV*); | |
9451 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9452 | vec_utf8 = DO_UTF8(vecsv); |
eb3fce90 | 9453 | } |
211dfcf1 HS |
9454 | else if (efix ? efix <= svmax : svix < svmax) { |
9455 | vecsv = svargs[efix ? efix-1 : svix++]; | |
9456 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9457 | vec_utf8 = DO_UTF8(vecsv); |
d7aa5382 JP |
9458 | /* if this is a version object, we need to return the |
9459 | * stringified representation (which the SvPVX has | |
9460 | * already done for us), but not vectorize the args | |
9461 | */ | |
9462 | if ( *q == 'd' && sv_derived_from(vecsv,"version") ) | |
9463 | { | |
9464 | q++; /* skip past the rest of the %vd format */ | |
da6068d9 | 9465 | eptr = (char *) vecstr; |
d7aa5382 JP |
9466 | elen = strlen(eptr); |
9467 | vectorize=FALSE; | |
9468 | goto string; | |
9469 | } | |
211dfcf1 HS |
9470 | } |
9471 | else { | |
9472 | vecstr = (U8*)""; | |
9473 | veclen = 0; | |
9474 | } | |
eb3fce90 | 9475 | } |
fc36a67e | 9476 | |
eb3fce90 | 9477 | if (asterisk) { |
fc36a67e | 9478 | if (args) |
9479 | i = va_arg(*args, int); | |
9480 | else | |
eb3fce90 JH |
9481 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
9482 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9483 | left |= (i < 0); |
9484 | width = (i < 0) ? -i : i; | |
fc36a67e | 9485 | } |
211dfcf1 | 9486 | gotwidth: |
fc36a67e | 9487 | |
9488 | /* PRECISION */ | |
46fc3d4c | 9489 | |
fc36a67e | 9490 | if (*q == '.') { |
9491 | q++; | |
9492 | if (*q == '*') { | |
211dfcf1 | 9493 | q++; |
7b8dd722 HS |
9494 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
9495 | goto unknown; | |
9496 | /* XXX: todo, support specified precision parameter */ | |
9497 | if (epix) | |
211dfcf1 | 9498 | goto unknown; |
46fc3d4c | 9499 | if (args) |
9500 | i = va_arg(*args, int); | |
9501 | else | |
eb3fce90 JH |
9502 | i = (ewix ? ewix <= svmax : svix < svmax) |
9503 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9504 | precis = (i < 0) ? 0 : i; |
fc36a67e | 9505 | } |
9506 | else { | |
9507 | precis = 0; | |
9508 | while (isDIGIT(*q)) | |
9509 | precis = precis * 10 + (*q++ - '0'); | |
9510 | } | |
9511 | has_precis = TRUE; | |
9512 | } | |
46fc3d4c | 9513 | |
fc36a67e | 9514 | /* SIZE */ |
46fc3d4c | 9515 | |
fc36a67e | 9516 | switch (*q) { |
c623ac67 GS |
9517 | #ifdef WIN32 |
9518 | case 'I': /* Ix, I32x, and I64x */ | |
9519 | # ifdef WIN64 | |
9520 | if (q[1] == '6' && q[2] == '4') { | |
9521 | q += 3; | |
9522 | intsize = 'q'; | |
9523 | break; | |
9524 | } | |
9525 | # endif | |
9526 | if (q[1] == '3' && q[2] == '2') { | |
9527 | q += 3; | |
9528 | break; | |
9529 | } | |
9530 | # ifdef WIN64 | |
9531 | intsize = 'q'; | |
9532 | # endif | |
9533 | q++; | |
9534 | break; | |
9535 | #endif | |
9e5b023a | 9536 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 9537 | case 'L': /* Ld */ |
e5c81feb | 9538 | /* FALL THROUGH */ |
e5c81feb | 9539 | #ifdef HAS_QUAD |
6f9bb7fd | 9540 | case 'q': /* qd */ |
9e5b023a | 9541 | #endif |
6f9bb7fd GS |
9542 | intsize = 'q'; |
9543 | q++; | |
9544 | break; | |
9545 | #endif | |
fc36a67e | 9546 | case 'l': |
9e5b023a | 9547 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 9548 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 9549 | intsize = 'q'; |
9550 | q += 2; | |
46fc3d4c | 9551 | break; |
cf2093f6 | 9552 | } |
fc36a67e | 9553 | #endif |
6f9bb7fd | 9554 | /* FALL THROUGH */ |
fc36a67e | 9555 | case 'h': |
cf2093f6 | 9556 | /* FALL THROUGH */ |
fc36a67e | 9557 | case 'V': |
9558 | intsize = *q++; | |
46fc3d4c | 9559 | break; |
9560 | } | |
9561 | ||
fc36a67e | 9562 | /* CONVERSION */ |
9563 | ||
211dfcf1 HS |
9564 | if (*q == '%') { |
9565 | eptr = q++; | |
9566 | elen = 1; | |
9567 | goto string; | |
9568 | } | |
9569 | ||
be75b157 HS |
9570 | if (vectorize) |
9571 | argsv = vecsv; | |
9572 | else if (!args) | |
211dfcf1 HS |
9573 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
9574 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
9575 | ||
46fc3d4c | 9576 | switch (c = *q++) { |
9577 | ||
9578 | /* STRINGS */ | |
9579 | ||
46fc3d4c | 9580 | case 'c': |
be75b157 | 9581 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
9582 | if ((uv > 255 || |
9583 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 9584 | && !IN_BYTES) { |
dfe13c55 | 9585 | eptr = (char*)utf8buf; |
9041c2e3 | 9586 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 9587 | is_utf8 = TRUE; |
7e2040f0 GS |
9588 | } |
9589 | else { | |
9590 | c = (char)uv; | |
9591 | eptr = &c; | |
9592 | elen = 1; | |
a0ed51b3 | 9593 | } |
46fc3d4c | 9594 | goto string; |
9595 | ||
46fc3d4c | 9596 | case 's': |
be75b157 | 9597 | if (args && !vectorize) { |
fc36a67e | 9598 | eptr = va_arg(*args, char*); |
c635e13b | 9599 | if (eptr) |
1d7c1841 GS |
9600 | #ifdef MACOS_TRADITIONAL |
9601 | /* On MacOS, %#s format is used for Pascal strings */ | |
9602 | if (alt) | |
9603 | elen = *eptr++; | |
9604 | else | |
9605 | #endif | |
c635e13b | 9606 | elen = strlen(eptr); |
9607 | else { | |
27da23d5 | 9608 | eptr = (char *)nullstr; |
c635e13b | 9609 | elen = sizeof nullstr - 1; |
9610 | } | |
46fc3d4c | 9611 | } |
211dfcf1 | 9612 | else { |
7e2040f0 GS |
9613 | eptr = SvPVx(argsv, elen); |
9614 | if (DO_UTF8(argsv)) { | |
a0ed51b3 LW |
9615 | if (has_precis && precis < elen) { |
9616 | I32 p = precis; | |
7e2040f0 | 9617 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
9618 | precis = p; |
9619 | } | |
9620 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 9621 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 9622 | } |
2cf2cfc6 | 9623 | is_utf8 = TRUE; |
a0ed51b3 LW |
9624 | } |
9625 | } | |
fc36a67e | 9626 | |
46fc3d4c | 9627 | string: |
b22c7a20 | 9628 | vectorize = FALSE; |
46fc3d4c | 9629 | if (has_precis && elen > precis) |
9630 | elen = precis; | |
9631 | break; | |
9632 | ||
9633 | /* INTEGERS */ | |
9634 | ||
fc36a67e | 9635 | case 'p': |
0dbb1585 | 9636 | if (left && args) { /* SVf */ |
5df617be | 9637 | left = FALSE; |
0dbb1585 AL |
9638 | if (width) { |
9639 | precis = width; | |
9640 | has_precis = TRUE; | |
9641 | width = 0; | |
9642 | } | |
9643 | if (vectorize) | |
9644 | goto unknown; | |
9645 | argsv = va_arg(*args, SV*); | |
9646 | eptr = SvPVx(argsv, elen); | |
9647 | if (DO_UTF8(argsv)) | |
9648 | is_utf8 = TRUE; | |
9649 | goto string; | |
5df617be | 9650 | } |
be75b157 | 9651 | if (alt || vectorize) |
c2e66d9e | 9652 | goto unknown; |
211dfcf1 | 9653 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 9654 | base = 16; |
9655 | goto integer; | |
9656 | ||
46fc3d4c | 9657 | case 'D': |
29fe7a80 | 9658 | #ifdef IV_IS_QUAD |
22f3ae8c | 9659 | intsize = 'q'; |
29fe7a80 | 9660 | #else |
46fc3d4c | 9661 | intsize = 'l'; |
29fe7a80 | 9662 | #endif |
46fc3d4c | 9663 | /* FALL THROUGH */ |
9664 | case 'd': | |
9665 | case 'i': | |
b22c7a20 | 9666 | if (vectorize) { |
ba210ebe | 9667 | STRLEN ulen; |
211dfcf1 HS |
9668 | if (!veclen) |
9669 | continue; | |
2cf2cfc6 A |
9670 | if (vec_utf8) |
9671 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9672 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9673 | else { |
e83d50c9 | 9674 | uv = *vecstr; |
b22c7a20 GS |
9675 | ulen = 1; |
9676 | } | |
9677 | vecstr += ulen; | |
9678 | veclen -= ulen; | |
e83d50c9 JP |
9679 | if (plus) |
9680 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
9681 | } |
9682 | else if (args) { | |
46fc3d4c | 9683 | switch (intsize) { |
9684 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 9685 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 9686 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 9687 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
9688 | #ifdef HAS_QUAD |
9689 | case 'q': iv = va_arg(*args, Quad_t); break; | |
9690 | #endif | |
46fc3d4c | 9691 | } |
9692 | } | |
9693 | else { | |
b10c0dba | 9694 | IV tiv = SvIVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9695 | switch (intsize) { |
b10c0dba MHM |
9696 | case 'h': iv = (short)tiv; break; |
9697 | case 'l': iv = (long)tiv; break; | |
9698 | case 'V': | |
9699 | default: iv = tiv; break; | |
cf2093f6 | 9700 | #ifdef HAS_QUAD |
b10c0dba | 9701 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 9702 | #endif |
46fc3d4c | 9703 | } |
9704 | } | |
e83d50c9 JP |
9705 | if ( !vectorize ) /* we already set uv above */ |
9706 | { | |
9707 | if (iv >= 0) { | |
9708 | uv = iv; | |
9709 | if (plus) | |
9710 | esignbuf[esignlen++] = plus; | |
9711 | } | |
9712 | else { | |
9713 | uv = -iv; | |
9714 | esignbuf[esignlen++] = '-'; | |
9715 | } | |
46fc3d4c | 9716 | } |
9717 | base = 10; | |
9718 | goto integer; | |
9719 | ||
fc36a67e | 9720 | case 'U': |
29fe7a80 | 9721 | #ifdef IV_IS_QUAD |
22f3ae8c | 9722 | intsize = 'q'; |
29fe7a80 | 9723 | #else |
fc36a67e | 9724 | intsize = 'l'; |
29fe7a80 | 9725 | #endif |
fc36a67e | 9726 | /* FALL THROUGH */ |
9727 | case 'u': | |
9728 | base = 10; | |
9729 | goto uns_integer; | |
9730 | ||
4f19785b WSI |
9731 | case 'b': |
9732 | base = 2; | |
9733 | goto uns_integer; | |
9734 | ||
46fc3d4c | 9735 | case 'O': |
29fe7a80 | 9736 | #ifdef IV_IS_QUAD |
22f3ae8c | 9737 | intsize = 'q'; |
29fe7a80 | 9738 | #else |
46fc3d4c | 9739 | intsize = 'l'; |
29fe7a80 | 9740 | #endif |
46fc3d4c | 9741 | /* FALL THROUGH */ |
9742 | case 'o': | |
9743 | base = 8; | |
9744 | goto uns_integer; | |
9745 | ||
9746 | case 'X': | |
46fc3d4c | 9747 | case 'x': |
9748 | base = 16; | |
46fc3d4c | 9749 | |
9750 | uns_integer: | |
b22c7a20 | 9751 | if (vectorize) { |
ba210ebe | 9752 | STRLEN ulen; |
b22c7a20 | 9753 | vector: |
211dfcf1 HS |
9754 | if (!veclen) |
9755 | continue; | |
2cf2cfc6 A |
9756 | if (vec_utf8) |
9757 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9758 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9759 | else { |
a05b299f | 9760 | uv = *vecstr; |
b22c7a20 GS |
9761 | ulen = 1; |
9762 | } | |
9763 | vecstr += ulen; | |
9764 | veclen -= ulen; | |
9765 | } | |
9766 | else if (args) { | |
46fc3d4c | 9767 | switch (intsize) { |
9768 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 9769 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 9770 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 9771 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 9772 | #ifdef HAS_QUAD |
9e3321a5 | 9773 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 9774 | #endif |
46fc3d4c | 9775 | } |
9776 | } | |
9777 | else { | |
b10c0dba | 9778 | UV tuv = SvUVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9779 | switch (intsize) { |
b10c0dba MHM |
9780 | case 'h': uv = (unsigned short)tuv; break; |
9781 | case 'l': uv = (unsigned long)tuv; break; | |
9782 | case 'V': | |
9783 | default: uv = tuv; break; | |
cf2093f6 | 9784 | #ifdef HAS_QUAD |
b10c0dba | 9785 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 9786 | #endif |
46fc3d4c | 9787 | } |
9788 | } | |
9789 | ||
9790 | integer: | |
46fc3d4c | 9791 | eptr = ebuf + sizeof ebuf; |
fc36a67e | 9792 | switch (base) { |
9793 | unsigned dig; | |
9794 | case 16: | |
c10ed8b9 HS |
9795 | if (!uv) |
9796 | alt = FALSE; | |
1d7c1841 GS |
9797 | p = (char*)((c == 'X') |
9798 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
fc36a67e | 9799 | do { |
9800 | dig = uv & 15; | |
9801 | *--eptr = p[dig]; | |
9802 | } while (uv >>= 4); | |
9803 | if (alt) { | |
46fc3d4c | 9804 | esignbuf[esignlen++] = '0'; |
fc36a67e | 9805 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ |
46fc3d4c | 9806 | } |
fc36a67e | 9807 | break; |
9808 | case 8: | |
9809 | do { | |
9810 | dig = uv & 7; | |
9811 | *--eptr = '0' + dig; | |
9812 | } while (uv >>= 3); | |
9813 | if (alt && *eptr != '0') | |
9814 | *--eptr = '0'; | |
9815 | break; | |
4f19785b WSI |
9816 | case 2: |
9817 | do { | |
9818 | dig = uv & 1; | |
9819 | *--eptr = '0' + dig; | |
9820 | } while (uv >>= 1); | |
eda88b6d JH |
9821 | if (alt) { |
9822 | esignbuf[esignlen++] = '0'; | |
7481bb52 | 9823 | esignbuf[esignlen++] = 'b'; |
eda88b6d | 9824 | } |
4f19785b | 9825 | break; |
fc36a67e | 9826 | default: /* it had better be ten or less */ |
9827 | do { | |
9828 | dig = uv % base; | |
9829 | *--eptr = '0' + dig; | |
9830 | } while (uv /= base); | |
9831 | break; | |
46fc3d4c | 9832 | } |
9833 | elen = (ebuf + sizeof ebuf) - eptr; | |
c10ed8b9 HS |
9834 | if (has_precis) { |
9835 | if (precis > elen) | |
9836 | zeros = precis - elen; | |
9837 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9838 | elen = 0; | |
9839 | } | |
46fc3d4c | 9840 | break; |
9841 | ||
9842 | /* FLOATING POINT */ | |
9843 | ||
fc36a67e | 9844 | case 'F': |
9845 | c = 'f'; /* maybe %F isn't supported here */ | |
9846 | /* FALL THROUGH */ | |
46fc3d4c | 9847 | case 'e': case 'E': |
fc36a67e | 9848 | case 'f': |
46fc3d4c | 9849 | case 'g': case 'G': |
9850 | ||
9851 | /* This is evil, but floating point is even more evil */ | |
9852 | ||
9e5b023a JH |
9853 | /* for SV-style calling, we can only get NV |
9854 | for C-style calling, we assume %f is double; | |
9855 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9856 | */ | |
9857 | switch (intsize) { | |
9858 | case 'V': | |
9859 | #if defined(USE_LONG_DOUBLE) | |
9860 | intsize = 'q'; | |
9861 | #endif | |
9862 | break; | |
8a2e3f14 | 9863 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9864 | case 'l': |
9865 | /* FALL THROUGH */ | |
9e5b023a JH |
9866 | default: |
9867 | #if defined(USE_LONG_DOUBLE) | |
9868 | intsize = args ? 0 : 'q'; | |
9869 | #endif | |
9870 | break; | |
9871 | case 'q': | |
9872 | #if defined(HAS_LONG_DOUBLE) | |
9873 | break; | |
9874 | #else | |
9875 | /* FALL THROUGH */ | |
9876 | #endif | |
9877 | case 'h': | |
9e5b023a JH |
9878 | goto unknown; |
9879 | } | |
9880 | ||
9881 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9882 | nv = (args && !vectorize) ? |
35fff930 JH |
9883 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9884 | intsize == 'q' ? | |
205f51d8 AS |
9885 | va_arg(*args, long double) : |
9886 | va_arg(*args, double) | |
35fff930 | 9887 | #else |
205f51d8 | 9888 | va_arg(*args, double) |
35fff930 | 9889 | #endif |
9e5b023a | 9890 | : SvNVx(argsv); |
fc36a67e | 9891 | |
9892 | need = 0; | |
be75b157 | 9893 | vectorize = FALSE; |
fc36a67e | 9894 | if (c != 'e' && c != 'E') { |
9895 | i = PERL_INT_MIN; | |
9e5b023a JH |
9896 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9897 | will cast our (long double) to (double) */ | |
73b309ea | 9898 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9899 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9900 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9901 | if (i > 0) |
fc36a67e | 9902 | need = BIT_DIGITS(i); |
9903 | } | |
9904 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9905 | |
fc36a67e | 9906 | if (need < width) |
9907 | need = width; | |
9908 | ||
20f6aaab AS |
9909 | #ifdef HAS_LDBL_SPRINTF_BUG |
9910 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9911 | with sfio - Allen <allens@cpan.org> */ |
9912 | ||
9913 | # ifdef DBL_MAX | |
9914 | # define MY_DBL_MAX DBL_MAX | |
9915 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9916 | # if DOUBLESIZE >= 8 | |
9917 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9918 | # else | |
9919 | # define MY_DBL_MAX 3.40282347E+38L | |
9920 | # endif | |
9921 | # endif | |
9922 | ||
9923 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9924 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9925 | # else |
205f51d8 | 9926 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9927 | # endif |
20f6aaab | 9928 | |
205f51d8 AS |
9929 | # ifdef DBL_MIN |
9930 | # define MY_DBL_MIN DBL_MIN | |
9931 | # else /* XXX guessing! -Allen */ | |
9932 | # if DOUBLESIZE >= 8 | |
9933 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9934 | # else | |
9935 | # define MY_DBL_MIN 1.17549435E-38L | |
9936 | # endif | |
9937 | # endif | |
20f6aaab | 9938 | |
205f51d8 AS |
9939 | if ((intsize == 'q') && (c == 'f') && |
9940 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9941 | (need < DBL_DIG)) { | |
9942 | /* it's going to be short enough that | |
9943 | * long double precision is not needed */ | |
9944 | ||
9945 | if ((nv <= 0L) && (nv >= -0L)) | |
9946 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9947 | else { | |
9948 | /* would use Perl_fp_class as a double-check but not | |
9949 | * functional on IRIX - see perl.h comments */ | |
9950 | ||
9951 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9952 | /* It's within the range that a double can represent */ | |
9953 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9954 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9955 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9956 | #endif |
205f51d8 | 9957 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9958 | } |
205f51d8 AS |
9959 | } |
9960 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9961 | double temp; | |
9962 | ||
9963 | intsize = 0; | |
9964 | temp = (double)nv; | |
9965 | nv = (NV)temp; | |
9966 | } | |
20f6aaab | 9967 | } |
205f51d8 AS |
9968 | |
9969 | # undef MY_DBL_MAX | |
9970 | # undef MY_DBL_MAX_BUG | |
9971 | # undef MY_DBL_MIN | |
9972 | ||
20f6aaab AS |
9973 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9974 | ||
46fc3d4c | 9975 | need += 20; /* fudge factor */ |
80252599 GS |
9976 | if (PL_efloatsize < need) { |
9977 | Safefree(PL_efloatbuf); | |
9978 | PL_efloatsize = need + 20; /* more fudge */ | |
9979 | New(906, PL_efloatbuf, PL_efloatsize, char); | |
7d5ea4e7 | 9980 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9981 | } |
9982 | ||
4151a5fe IZ |
9983 | if ( !(width || left || plus || alt) && fill != '0' |
9984 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
9985 | /* See earlier comment about buggy Gconvert when digits, |
9986 | aka precis is 0 */ | |
9987 | if ( c == 'g' && precis) { | |
2e59c212 | 9988 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4151a5fe IZ |
9989 | if (*PL_efloatbuf) /* May return an empty string for digits==0 */ |
9990 | goto float_converted; | |
9991 | } else if ( c == 'f' && !precis) { | |
9992 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
9993 | break; | |
9994 | } | |
9995 | } | |
46fc3d4c | 9996 | eptr = ebuf + sizeof ebuf; |
9997 | *--eptr = '\0'; | |
9998 | *--eptr = c; | |
9e5b023a JH |
9999 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ |
10000 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) | |
10001 | if (intsize == 'q') { | |
e5c81feb JH |
10002 | /* Copy the one or more characters in a long double |
10003 | * format before the 'base' ([efgEFG]) character to | |
10004 | * the format string. */ | |
10005 | static char const prifldbl[] = PERL_PRIfldbl; | |
10006 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
10007 | while (p >= prifldbl) { *--eptr = *p--; } | |
cf2093f6 | 10008 | } |
65202027 | 10009 | #endif |
46fc3d4c | 10010 | if (has_precis) { |
10011 | base = precis; | |
10012 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
10013 | *--eptr = '.'; | |
10014 | } | |
10015 | if (width) { | |
10016 | base = width; | |
10017 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
10018 | } | |
10019 | if (fill == '0') | |
10020 | *--eptr = fill; | |
84902520 TB |
10021 | if (left) |
10022 | *--eptr = '-'; | |
46fc3d4c | 10023 | if (plus) |
10024 | *--eptr = plus; | |
10025 | if (alt) | |
10026 | *--eptr = '#'; | |
10027 | *--eptr = '%'; | |
10028 | ||
ff9121f8 JH |
10029 | /* No taint. Otherwise we are in the strange situation |
10030 | * where printf() taints but print($float) doesn't. | |
bda0f7a5 | 10031 | * --jhi */ |
9e5b023a JH |
10032 | #if defined(HAS_LONG_DOUBLE) |
10033 | if (intsize == 'q') | |
10034 | (void)sprintf(PL_efloatbuf, eptr, nv); | |
10035 | else | |
10036 | (void)sprintf(PL_efloatbuf, eptr, (double)nv); | |
10037 | #else | |
dd8482fc | 10038 | (void)sprintf(PL_efloatbuf, eptr, nv); |
9e5b023a | 10039 | #endif |
4151a5fe | 10040 | float_converted: |
80252599 GS |
10041 | eptr = PL_efloatbuf; |
10042 | elen = strlen(PL_efloatbuf); | |
46fc3d4c | 10043 | break; |
10044 | ||
fc36a67e | 10045 | /* SPECIAL */ |
10046 | ||
10047 | case 'n': | |
10048 | i = SvCUR(sv) - origlen; | |
be75b157 | 10049 | if (args && !vectorize) { |
c635e13b | 10050 | switch (intsize) { |
10051 | case 'h': *(va_arg(*args, short*)) = i; break; | |
10052 | default: *(va_arg(*args, int*)) = i; break; | |
10053 | case 'l': *(va_arg(*args, long*)) = i; break; | |
10054 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
10055 | #ifdef HAS_QUAD |
10056 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
10057 | #endif | |
c635e13b | 10058 | } |
fc36a67e | 10059 | } |
9dd79c3f | 10060 | else |
211dfcf1 | 10061 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 10062 | vectorize = FALSE; |
fc36a67e | 10063 | continue; /* not "break" */ |
10064 | ||
10065 | /* UNKNOWN */ | |
10066 | ||
46fc3d4c | 10067 | default: |
fc36a67e | 10068 | unknown: |
599cee73 | 10069 | if (!args && ckWARN(WARN_PRINTF) && |
533c011a | 10070 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) { |
c635e13b | 10071 | SV *msg = sv_newmortal(); |
35c1215d NC |
10072 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
10073 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 10074 | if (c) { |
0f4b6630 | 10075 | if (isPRINT(c)) |
1c846c1f | 10076 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
10077 | "\"%%%c\"", c & 0xFF); |
10078 | else | |
10079 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 10080 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 10081 | (UV)c & 0xFF); |
0f4b6630 | 10082 | } else |
c635e13b | 10083 | sv_catpv(msg, "end of string"); |
9014280d | 10084 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 10085 | } |
fb73857a | 10086 | |
10087 | /* output mangled stuff ... */ | |
10088 | if (c == '\0') | |
10089 | --q; | |
46fc3d4c | 10090 | eptr = p; |
10091 | elen = q - p; | |
fb73857a | 10092 | |
10093 | /* ... right here, because formatting flags should not apply */ | |
10094 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10095 | p = SvEND(sv); | |
4459522c | 10096 | Copy(eptr, p, elen, char); |
fb73857a | 10097 | p += elen; |
10098 | *p = '\0'; | |
b162af07 | 10099 | SvCUR_set(sv, p - SvPVX(sv)); |
58e33a90 | 10100 | svix = osvix; |
fb73857a | 10101 | continue; /* not "break" */ |
46fc3d4c | 10102 | } |
10103 | ||
6c94ec8b HS |
10104 | /* calculate width before utf8_upgrade changes it */ |
10105 | have = esignlen + zeros + elen; | |
10106 | ||
d2876be5 JH |
10107 | if (is_utf8 != has_utf8) { |
10108 | if (is_utf8) { | |
10109 | if (SvCUR(sv)) | |
10110 | sv_utf8_upgrade(sv); | |
10111 | } | |
10112 | else { | |
10113 | SV *nsv = sv_2mortal(newSVpvn(eptr, elen)); | |
10114 | sv_utf8_upgrade(nsv); | |
10115 | eptr = SvPVX(nsv); | |
10116 | elen = SvCUR(nsv); | |
10117 | } | |
10118 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10119 | p = SvEND(sv); | |
10120 | *p = '\0'; | |
10121 | } | |
6af65485 | 10122 | |
46fc3d4c | 10123 | need = (have > width ? have : width); |
10124 | gap = need - have; | |
10125 | ||
b22c7a20 | 10126 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 10127 | p = SvEND(sv); |
10128 | if (esignlen && fill == '0') { | |
eb160463 | 10129 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10130 | *p++ = esignbuf[i]; |
10131 | } | |
10132 | if (gap && !left) { | |
10133 | memset(p, fill, gap); | |
10134 | p += gap; | |
10135 | } | |
10136 | if (esignlen && fill != '0') { | |
eb160463 | 10137 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10138 | *p++ = esignbuf[i]; |
10139 | } | |
fc36a67e | 10140 | if (zeros) { |
10141 | for (i = zeros; i; i--) | |
10142 | *p++ = '0'; | |
10143 | } | |
46fc3d4c | 10144 | if (elen) { |
4459522c | 10145 | Copy(eptr, p, elen, char); |
46fc3d4c | 10146 | p += elen; |
10147 | } | |
10148 | if (gap && left) { | |
10149 | memset(p, ' ', gap); | |
10150 | p += gap; | |
10151 | } | |
b22c7a20 GS |
10152 | if (vectorize) { |
10153 | if (veclen) { | |
4459522c | 10154 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
10155 | p += dotstrlen; |
10156 | } | |
10157 | else | |
10158 | vectorize = FALSE; /* done iterating over vecstr */ | |
10159 | } | |
2cf2cfc6 A |
10160 | if (is_utf8) |
10161 | has_utf8 = TRUE; | |
10162 | if (has_utf8) | |
7e2040f0 | 10163 | SvUTF8_on(sv); |
46fc3d4c | 10164 | *p = '\0'; |
b162af07 | 10165 | SvCUR_set(sv, p - SvPVX(sv)); |
b22c7a20 GS |
10166 | if (vectorize) { |
10167 | esignlen = 0; | |
10168 | goto vector; | |
10169 | } | |
46fc3d4c | 10170 | } |
10171 | } | |
51371543 | 10172 | |
645c22ef DM |
10173 | /* ========================================================================= |
10174 | ||
10175 | =head1 Cloning an interpreter | |
10176 | ||
10177 | All the macros and functions in this section are for the private use of | |
10178 | the main function, perl_clone(). | |
10179 | ||
10180 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
10181 | During the course of a cloning, a hash table is used to map old addresses | |
10182 | to new addresses. The table is created and manipulated with the | |
10183 | ptr_table_* functions. | |
10184 | ||
10185 | =cut | |
10186 | ||
10187 | ============================================================================*/ | |
10188 | ||
10189 | ||
1d7c1841 GS |
10190 | #if defined(USE_ITHREADS) |
10191 | ||
1d7c1841 GS |
10192 | #ifndef GpREFCNT_inc |
10193 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
10194 | #endif | |
10195 | ||
10196 | ||
d2d73c3e AB |
10197 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
10198 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
10199 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10200 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
10201 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10202 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
10203 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10204 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
10205 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10206 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
10207 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
10208 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
10209 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 10210 | |
d2d73c3e | 10211 | |
d2f185dc AMS |
10212 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
10213 | regcomp.c. AMS 20010712 */ | |
645c22ef | 10214 | |
1d7c1841 | 10215 | REGEXP * |
a8fc9800 | 10216 | Perl_re_dup(pTHX_ REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 10217 | { |
27da23d5 | 10218 | dVAR; |
d2f185dc AMS |
10219 | REGEXP *ret; |
10220 | int i, len, npar; | |
10221 | struct reg_substr_datum *s; | |
10222 | ||
10223 | if (!r) | |
10224 | return (REGEXP *)NULL; | |
10225 | ||
10226 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
10227 | return ret; | |
10228 | ||
10229 | len = r->offsets[0]; | |
10230 | npar = r->nparens+1; | |
10231 | ||
10232 | Newc(0, ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); | |
10233 | Copy(r->program, ret->program, len+1, regnode); | |
10234 | ||
10235 | New(0, ret->startp, npar, I32); | |
10236 | Copy(r->startp, ret->startp, npar, I32); | |
10237 | New(0, ret->endp, npar, I32); | |
10238 | Copy(r->startp, ret->startp, npar, I32); | |
10239 | ||
d2f185dc AMS |
10240 | New(0, ret->substrs, 1, struct reg_substr_data); |
10241 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { | |
10242 | s->min_offset = r->substrs->data[i].min_offset; | |
10243 | s->max_offset = r->substrs->data[i].max_offset; | |
10244 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 10245 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
10246 | } |
10247 | ||
70612e96 | 10248 | ret->regstclass = NULL; |
d2f185dc AMS |
10249 | if (r->data) { |
10250 | struct reg_data *d; | |
e1ec3a88 | 10251 | const int count = r->data->count; |
d2f185dc AMS |
10252 | |
10253 | Newc(0, d, sizeof(struct reg_data) + count*sizeof(void *), | |
10254 | char, struct reg_data); | |
10255 | New(0, d->what, count, U8); | |
10256 | ||
10257 | d->count = count; | |
10258 | for (i = 0; i < count; i++) { | |
10259 | d->what[i] = r->data->what[i]; | |
10260 | switch (d->what[i]) { | |
a3621e74 YO |
10261 | /* legal options are one of: sfpont |
10262 | see also regcomp.h and pregfree() */ | |
d2f185dc AMS |
10263 | case 's': |
10264 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
10265 | break; | |
10266 | case 'p': | |
10267 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
10268 | break; | |
10269 | case 'f': | |
10270 | /* This is cheating. */ | |
10271 | New(0, d->data[i], 1, struct regnode_charclass_class); | |
10272 | StructCopy(r->data->data[i], d->data[i], | |
10273 | struct regnode_charclass_class); | |
70612e96 | 10274 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
10275 | break; |
10276 | case 'o': | |
33773810 AMS |
10277 | /* Compiled op trees are readonly, and can thus be |
10278 | shared without duplication. */ | |
b34c0dd4 | 10279 | OP_REFCNT_LOCK; |
9b978d73 | 10280 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
b34c0dd4 | 10281 | OP_REFCNT_UNLOCK; |
9b978d73 | 10282 | break; |
d2f185dc AMS |
10283 | case 'n': |
10284 | d->data[i] = r->data->data[i]; | |
10285 | break; | |
a3621e74 YO |
10286 | case 't': |
10287 | d->data[i] = r->data->data[i]; | |
10288 | OP_REFCNT_LOCK; | |
10289 | ((reg_trie_data*)d->data[i])->refcount++; | |
10290 | OP_REFCNT_UNLOCK; | |
10291 | break; | |
10292 | default: | |
10293 | Perl_croak(aTHX_ "panic: re_dup unknown data code '%c'", r->data->what[i]); | |
d2f185dc AMS |
10294 | } |
10295 | } | |
10296 | ||
10297 | ret->data = d; | |
10298 | } | |
10299 | else | |
10300 | ret->data = NULL; | |
10301 | ||
10302 | New(0, ret->offsets, 2*len+1, U32); | |
10303 | Copy(r->offsets, ret->offsets, 2*len+1, U32); | |
10304 | ||
e01c5899 | 10305 | ret->precomp = SAVEPVN(r->precomp, r->prelen); |
d2f185dc AMS |
10306 | ret->refcnt = r->refcnt; |
10307 | ret->minlen = r->minlen; | |
10308 | ret->prelen = r->prelen; | |
10309 | ret->nparens = r->nparens; | |
10310 | ret->lastparen = r->lastparen; | |
10311 | ret->lastcloseparen = r->lastcloseparen; | |
10312 | ret->reganch = r->reganch; | |
10313 | ||
70612e96 RG |
10314 | ret->sublen = r->sublen; |
10315 | ||
10316 | if (RX_MATCH_COPIED(ret)) | |
e01c5899 | 10317 | ret->subbeg = SAVEPVN(r->subbeg, r->sublen); |
70612e96 RG |
10318 | else |
10319 | ret->subbeg = Nullch; | |
9a26048b NC |
10320 | #ifdef PERL_COPY_ON_WRITE |
10321 | ret->saved_copy = Nullsv; | |
10322 | #endif | |
70612e96 | 10323 | |
d2f185dc AMS |
10324 | ptr_table_store(PL_ptr_table, r, ret); |
10325 | return ret; | |
1d7c1841 GS |
10326 | } |
10327 | ||
d2d73c3e | 10328 | /* duplicate a file handle */ |
645c22ef | 10329 | |
1d7c1841 | 10330 | PerlIO * |
a8fc9800 | 10331 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
10332 | { |
10333 | PerlIO *ret; | |
73d840c0 AL |
10334 | (void)type; |
10335 | ||
1d7c1841 GS |
10336 | if (!fp) |
10337 | return (PerlIO*)NULL; | |
10338 | ||
10339 | /* look for it in the table first */ | |
10340 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
10341 | if (ret) | |
10342 | return ret; | |
10343 | ||
10344 | /* create anew and remember what it is */ | |
ecdeb87c | 10345 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
10346 | ptr_table_store(PL_ptr_table, fp, ret); |
10347 | return ret; | |
10348 | } | |
10349 | ||
645c22ef DM |
10350 | /* duplicate a directory handle */ |
10351 | ||
1d7c1841 GS |
10352 | DIR * |
10353 | Perl_dirp_dup(pTHX_ DIR *dp) | |
10354 | { | |
10355 | if (!dp) | |
10356 | return (DIR*)NULL; | |
10357 | /* XXX TODO */ | |
10358 | return dp; | |
10359 | } | |
10360 | ||
ff276b08 | 10361 | /* duplicate a typeglob */ |
645c22ef | 10362 | |
1d7c1841 | 10363 | GP * |
a8fc9800 | 10364 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
10365 | { |
10366 | GP *ret; | |
10367 | if (!gp) | |
10368 | return (GP*)NULL; | |
10369 | /* look for it in the table first */ | |
10370 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
10371 | if (ret) | |
10372 | return ret; | |
10373 | ||
10374 | /* create anew and remember what it is */ | |
10375 | Newz(0, ret, 1, GP); | |
10376 | ptr_table_store(PL_ptr_table, gp, ret); | |
10377 | ||
10378 | /* clone */ | |
10379 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
10380 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
10381 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
10382 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
10383 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
10384 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
10385 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
10386 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 GS |
10387 | ret->gp_cvgen = gp->gp_cvgen; |
10388 | ret->gp_flags = gp->gp_flags; | |
10389 | ret->gp_line = gp->gp_line; | |
10390 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
10391 | return ret; | |
10392 | } | |
10393 | ||
645c22ef DM |
10394 | /* duplicate a chain of magic */ |
10395 | ||
1d7c1841 | 10396 | MAGIC * |
a8fc9800 | 10397 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 10398 | { |
cb359b41 JH |
10399 | MAGIC *mgprev = (MAGIC*)NULL; |
10400 | MAGIC *mgret; | |
1d7c1841 GS |
10401 | if (!mg) |
10402 | return (MAGIC*)NULL; | |
10403 | /* look for it in the table first */ | |
10404 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
10405 | if (mgret) | |
10406 | return mgret; | |
10407 | ||
10408 | for (; mg; mg = mg->mg_moremagic) { | |
10409 | MAGIC *nmg; | |
10410 | Newz(0, nmg, 1, MAGIC); | |
cb359b41 | 10411 | if (mgprev) |
1d7c1841 | 10412 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
10413 | else |
10414 | mgret = nmg; | |
1d7c1841 GS |
10415 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
10416 | nmg->mg_private = mg->mg_private; | |
10417 | nmg->mg_type = mg->mg_type; | |
10418 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 10419 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 10420 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 10421 | } |
05bd4103 | 10422 | else if(mg->mg_type == PERL_MAGIC_backref) { |
7fc63493 | 10423 | const AV * const av = (AV*) mg->mg_obj; |
fdc9a813 AE |
10424 | SV **svp; |
10425 | I32 i; | |
7fc63493 | 10426 | (void)SvREFCNT_inc(nmg->mg_obj = (SV*)newAV()); |
fdc9a813 AE |
10427 | svp = AvARRAY(av); |
10428 | for (i = AvFILLp(av); i >= 0; i--) { | |
3a81978b | 10429 | if (!svp[i]) continue; |
fdc9a813 AE |
10430 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); |
10431 | } | |
05bd4103 | 10432 | } |
1d7c1841 GS |
10433 | else { |
10434 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
10435 | ? sv_dup_inc(mg->mg_obj, param) |
10436 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
10437 | } |
10438 | nmg->mg_len = mg->mg_len; | |
10439 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 10440 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 10441 | if (mg->mg_len > 0) { |
1d7c1841 | 10442 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
10443 | if (mg->mg_type == PERL_MAGIC_overload_table && |
10444 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
10445 | { | |
1d7c1841 GS |
10446 | AMT *amtp = (AMT*)mg->mg_ptr; |
10447 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
10448 | I32 i; | |
10449 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 10450 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
10451 | } |
10452 | } | |
10453 | } | |
10454 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 10455 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 10456 | } |
68795e93 NIS |
10457 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
10458 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
10459 | } | |
1d7c1841 GS |
10460 | mgprev = nmg; |
10461 | } | |
10462 | return mgret; | |
10463 | } | |
10464 | ||
645c22ef DM |
10465 | /* create a new pointer-mapping table */ |
10466 | ||
1d7c1841 GS |
10467 | PTR_TBL_t * |
10468 | Perl_ptr_table_new(pTHX) | |
10469 | { | |
10470 | PTR_TBL_t *tbl; | |
10471 | Newz(0, tbl, 1, PTR_TBL_t); | |
10472 | tbl->tbl_max = 511; | |
10473 | tbl->tbl_items = 0; | |
10474 | Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); | |
10475 | return tbl; | |
10476 | } | |
10477 | ||
134ca3d6 DM |
10478 | #if (PTRSIZE == 8) |
10479 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 3) | |
10480 | #else | |
10481 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 2) | |
10482 | #endif | |
10483 | ||
32e691d0 NC |
10484 | |
10485 | ||
10486 | STATIC void | |
10487 | S_more_pte(pTHX) | |
10488 | { | |
cac9b346 NC |
10489 | struct ptr_tbl_ent* pte; |
10490 | struct ptr_tbl_ent* pteend; | |
c3929b72 NC |
10491 | New(0, pte, PERL_ARENA_SIZE/sizeof(struct ptr_tbl_ent), struct ptr_tbl_ent); |
10492 | pte->next = PL_pte_arenaroot; | |
10493 | PL_pte_arenaroot = pte; | |
32e691d0 | 10494 | |
9c17f24a | 10495 | pteend = &pte[PERL_ARENA_SIZE / sizeof(struct ptr_tbl_ent) - 1]; |
32e691d0 NC |
10496 | PL_pte_root = ++pte; |
10497 | while (pte < pteend) { | |
10498 | pte->next = pte + 1; | |
10499 | pte++; | |
10500 | } | |
10501 | pte->next = 0; | |
10502 | } | |
10503 | ||
10504 | STATIC struct ptr_tbl_ent* | |
10505 | S_new_pte(pTHX) | |
10506 | { | |
10507 | struct ptr_tbl_ent* pte; | |
10508 | if (!PL_pte_root) | |
10509 | S_more_pte(aTHX); | |
10510 | pte = PL_pte_root; | |
10511 | PL_pte_root = pte->next; | |
10512 | return pte; | |
10513 | } | |
10514 | ||
10515 | STATIC void | |
10516 | S_del_pte(pTHX_ struct ptr_tbl_ent*p) | |
10517 | { | |
10518 | p->next = PL_pte_root; | |
10519 | PL_pte_root = p; | |
10520 | } | |
10521 | ||
645c22ef DM |
10522 | /* map an existing pointer using a table */ |
10523 | ||
1d7c1841 GS |
10524 | void * |
10525 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv) | |
10526 | { | |
10527 | PTR_TBL_ENT_t *tblent; | |
4373e329 | 10528 | const UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
10529 | assert(tbl); |
10530 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
10531 | for (; tblent; tblent = tblent->next) { | |
10532 | if (tblent->oldval == sv) | |
10533 | return tblent->newval; | |
10534 | } | |
10535 | return (void*)NULL; | |
10536 | } | |
10537 | ||
645c22ef DM |
10538 | /* add a new entry to a pointer-mapping table */ |
10539 | ||
1d7c1841 GS |
10540 | void |
10541 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv) | |
10542 | { | |
10543 | PTR_TBL_ENT_t *tblent, **otblent; | |
10544 | /* XXX this may be pessimal on platforms where pointers aren't good | |
10545 | * hash values e.g. if they grow faster in the most significant | |
10546 | * bits */ | |
4373e329 | 10547 | const UV hash = PTR_TABLE_HASH(oldv); |
14cade97 | 10548 | bool empty = 1; |
1d7c1841 GS |
10549 | |
10550 | assert(tbl); | |
10551 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
14cade97 | 10552 | for (tblent = *otblent; tblent; empty=0, tblent = tblent->next) { |
1d7c1841 GS |
10553 | if (tblent->oldval == oldv) { |
10554 | tblent->newval = newv; | |
1d7c1841 GS |
10555 | return; |
10556 | } | |
10557 | } | |
32e691d0 | 10558 | tblent = S_new_pte(aTHX); |
1d7c1841 GS |
10559 | tblent->oldval = oldv; |
10560 | tblent->newval = newv; | |
10561 | tblent->next = *otblent; | |
10562 | *otblent = tblent; | |
10563 | tbl->tbl_items++; | |
14cade97 | 10564 | if (!empty && tbl->tbl_items > tbl->tbl_max) |
1d7c1841 GS |
10565 | ptr_table_split(tbl); |
10566 | } | |
10567 | ||
645c22ef DM |
10568 | /* double the hash bucket size of an existing ptr table */ |
10569 | ||
1d7c1841 GS |
10570 | void |
10571 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
10572 | { | |
10573 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
4373e329 | 10574 | const UV oldsize = tbl->tbl_max + 1; |
1d7c1841 GS |
10575 | UV newsize = oldsize * 2; |
10576 | UV i; | |
10577 | ||
10578 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
10579 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
10580 | tbl->tbl_max = --newsize; | |
10581 | tbl->tbl_ary = ary; | |
10582 | for (i=0; i < oldsize; i++, ary++) { | |
10583 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
10584 | if (!*ary) | |
10585 | continue; | |
10586 | curentp = ary + oldsize; | |
10587 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 10588 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
10589 | *entp = ent->next; |
10590 | ent->next = *curentp; | |
10591 | *curentp = ent; | |
10592 | continue; | |
10593 | } | |
10594 | else | |
10595 | entp = &ent->next; | |
10596 | } | |
10597 | } | |
10598 | } | |
10599 | ||
645c22ef DM |
10600 | /* remove all the entries from a ptr table */ |
10601 | ||
a0739874 DM |
10602 | void |
10603 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
10604 | { | |
10605 | register PTR_TBL_ENT_t **array; | |
10606 | register PTR_TBL_ENT_t *entry; | |
a0739874 DM |
10607 | UV riter = 0; |
10608 | UV max; | |
10609 | ||
10610 | if (!tbl || !tbl->tbl_items) { | |
10611 | return; | |
10612 | } | |
10613 | ||
10614 | array = tbl->tbl_ary; | |
10615 | entry = array[0]; | |
10616 | max = tbl->tbl_max; | |
10617 | ||
10618 | for (;;) { | |
10619 | if (entry) { | |
4373e329 | 10620 | PTR_TBL_ENT_t *oentry = entry; |
a0739874 | 10621 | entry = entry->next; |
32e691d0 | 10622 | S_del_pte(aTHX_ oentry); |
a0739874 DM |
10623 | } |
10624 | if (!entry) { | |
10625 | if (++riter > max) { | |
10626 | break; | |
10627 | } | |
10628 | entry = array[riter]; | |
10629 | } | |
10630 | } | |
10631 | ||
10632 | tbl->tbl_items = 0; | |
10633 | } | |
10634 | ||
645c22ef DM |
10635 | /* clear and free a ptr table */ |
10636 | ||
a0739874 DM |
10637 | void |
10638 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
10639 | { | |
10640 | if (!tbl) { | |
10641 | return; | |
10642 | } | |
10643 | ptr_table_clear(tbl); | |
10644 | Safefree(tbl->tbl_ary); | |
10645 | Safefree(tbl); | |
10646 | } | |
10647 | ||
645c22ef DM |
10648 | /* attempt to make everything in the typeglob readonly */ |
10649 | ||
5bd07a3d | 10650 | STATIC SV * |
59b40662 | 10651 | S_gv_share(pTHX_ SV *sstr, CLONE_PARAMS *param) |
5bd07a3d DM |
10652 | { |
10653 | GV *gv = (GV*)sstr; | |
59b40662 | 10654 | SV *sv = ¶m->proto_perl->Isv_no; /* just need SvREADONLY-ness */ |
5bd07a3d DM |
10655 | |
10656 | if (GvIO(gv) || GvFORM(gv)) { | |
7fb37951 | 10657 | GvUNIQUE_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */ |
5bd07a3d DM |
10658 | } |
10659 | else if (!GvCV(gv)) { | |
10660 | GvCV(gv) = (CV*)sv; | |
10661 | } | |
10662 | else { | |
10663 | /* CvPADLISTs cannot be shared */ | |
37e20706 | 10664 | if (!SvREADONLY(GvCV(gv)) && !CvXSUB(GvCV(gv))) { |
7fb37951 | 10665 | GvUNIQUE_off(gv); |
5bd07a3d DM |
10666 | } |
10667 | } | |
10668 | ||
7fb37951 | 10669 | if (!GvUNIQUE(gv)) { |
5bd07a3d DM |
10670 | #if 0 |
10671 | PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n", | |
10672 | HvNAME(GvSTASH(gv)), GvNAME(gv)); | |
10673 | #endif | |
10674 | return Nullsv; | |
10675 | } | |
10676 | ||
4411f3b6 | 10677 | /* |
5bd07a3d DM |
10678 | * write attempts will die with |
10679 | * "Modification of a read-only value attempted" | |
10680 | */ | |
10681 | if (!GvSV(gv)) { | |
10682 | GvSV(gv) = sv; | |
10683 | } | |
10684 | else { | |
10685 | SvREADONLY_on(GvSV(gv)); | |
10686 | } | |
10687 | ||
10688 | if (!GvAV(gv)) { | |
10689 | GvAV(gv) = (AV*)sv; | |
10690 | } | |
10691 | else { | |
10692 | SvREADONLY_on(GvAV(gv)); | |
10693 | } | |
10694 | ||
10695 | if (!GvHV(gv)) { | |
10696 | GvHV(gv) = (HV*)sv; | |
10697 | } | |
10698 | else { | |
53c33732 | 10699 | SvREADONLY_on(GvHV(gv)); |
5bd07a3d DM |
10700 | } |
10701 | ||
10702 | return sstr; /* he_dup() will SvREFCNT_inc() */ | |
10703 | } | |
10704 | ||
645c22ef DM |
10705 | /* duplicate an SV of any type (including AV, HV etc) */ |
10706 | ||
83841fad NIS |
10707 | void |
10708 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
10709 | { | |
10710 | if (SvROK(sstr)) { | |
b162af07 SP |
10711 | SvRV_set(dstr, SvWEAKREF(sstr) |
10712 | ? sv_dup(SvRV(sstr), param) | |
10713 | : sv_dup_inc(SvRV(sstr), param)); | |
f880fe2f | 10714 | |
83841fad NIS |
10715 | } |
10716 | else if (SvPVX(sstr)) { | |
10717 | /* Has something there */ | |
10718 | if (SvLEN(sstr)) { | |
68795e93 | 10719 | /* Normal PV - clone whole allocated space */ |
f880fe2f | 10720 | SvPV_set(dstr, SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1)); |
d3d0e6f1 NC |
10721 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
10722 | /* Not that normal - actually sstr is copy on write. | |
10723 | But we are a true, independant SV, so: */ | |
10724 | SvREADONLY_off(dstr); | |
10725 | SvFAKE_off(dstr); | |
10726 | } | |
68795e93 | 10727 | } |
83841fad NIS |
10728 | else { |
10729 | /* Special case - not normally malloced for some reason */ | |
10730 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { | |
10731 | /* A "shared" PV - clone it as unshared string */ | |
281b2760 | 10732 | if(SvPADTMP(sstr)) { |
5e6160dc AB |
10733 | /* However, some of them live in the pad |
10734 | and they should not have these flags | |
10735 | turned off */ | |
281b2760 | 10736 | |
f880fe2f SP |
10737 | SvPV_set(dstr, sharepvn(SvPVX(sstr), SvCUR(sstr), |
10738 | SvUVX(sstr))); | |
607fa7f2 | 10739 | SvUV_set(dstr, SvUVX(sstr)); |
281b2760 AB |
10740 | } else { |
10741 | ||
f880fe2f | 10742 | SvPV_set(dstr, SAVEPVN(SvPVX(sstr), SvCUR(sstr))); |
281b2760 AB |
10743 | SvFAKE_off(dstr); |
10744 | SvREADONLY_off(dstr); | |
5e6160dc | 10745 | } |
83841fad NIS |
10746 | } |
10747 | else { | |
10748 | /* Some other special case - random pointer */ | |
f880fe2f | 10749 | SvPV_set(dstr, SvPVX(sstr)); |
d3d0e6f1 | 10750 | } |
83841fad NIS |
10751 | } |
10752 | } | |
10753 | else { | |
10754 | /* Copy the Null */ | |
f880fe2f | 10755 | if (SvTYPE(dstr) == SVt_RV) |
b162af07 | 10756 | SvRV_set(dstr, NULL); |
f880fe2f SP |
10757 | else |
10758 | SvPV_set(dstr, 0); | |
83841fad NIS |
10759 | } |
10760 | } | |
10761 | ||
1d7c1841 | 10762 | SV * |
a8fc9800 | 10763 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 10764 | { |
27da23d5 | 10765 | dVAR; |
1d7c1841 GS |
10766 | SV *dstr; |
10767 | ||
10768 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
10769 | return Nullsv; | |
10770 | /* look for it in the table first */ | |
10771 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
10772 | if (dstr) | |
10773 | return dstr; | |
10774 | ||
0405e91e AB |
10775 | if(param->flags & CLONEf_JOIN_IN) { |
10776 | /** We are joining here so we don't want do clone | |
10777 | something that is bad **/ | |
10778 | ||
10779 | if(SvTYPE(sstr) == SVt_PVHV && | |
10780 | HvNAME(sstr)) { | |
10781 | /** don't clone stashes if they already exist **/ | |
10782 | HV* old_stash = gv_stashpv(HvNAME(sstr),0); | |
10783 | return (SV*) old_stash; | |
10784 | } | |
10785 | } | |
10786 | ||
1d7c1841 GS |
10787 | /* create anew and remember what it is */ |
10788 | new_SV(dstr); | |
fd0854ff DM |
10789 | |
10790 | #ifdef DEBUG_LEAKING_SCALARS | |
10791 | dstr->sv_debug_optype = sstr->sv_debug_optype; | |
10792 | dstr->sv_debug_line = sstr->sv_debug_line; | |
10793 | dstr->sv_debug_inpad = sstr->sv_debug_inpad; | |
10794 | dstr->sv_debug_cloned = 1; | |
10795 | # ifdef NETWARE | |
10796 | dstr->sv_debug_file = savepv(sstr->sv_debug_file); | |
10797 | # else | |
10798 | dstr->sv_debug_file = savesharedpv(sstr->sv_debug_file); | |
10799 | # endif | |
10800 | #endif | |
10801 | ||
1d7c1841 GS |
10802 | ptr_table_store(PL_ptr_table, sstr, dstr); |
10803 | ||
10804 | /* clone */ | |
10805 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
10806 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
10807 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
10808 | ||
10809 | #ifdef DEBUGGING | |
10810 | if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx) | |
10811 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", | |
10812 | PL_watch_pvx, SvPVX(sstr)); | |
10813 | #endif | |
10814 | ||
9660f481 DM |
10815 | /* don't clone objects whose class has asked us not to */ |
10816 | if (SvOBJECT(sstr) && ! (SvFLAGS(SvSTASH(sstr)) & SVphv_CLONEABLE)) { | |
10817 | SvFLAGS(dstr) &= ~SVTYPEMASK; | |
10818 | SvOBJECT_off(dstr); | |
10819 | return dstr; | |
10820 | } | |
10821 | ||
1d7c1841 GS |
10822 | switch (SvTYPE(sstr)) { |
10823 | case SVt_NULL: | |
10824 | SvANY(dstr) = NULL; | |
10825 | break; | |
10826 | case SVt_IV: | |
10827 | SvANY(dstr) = new_XIV(); | |
45977657 | 10828 | SvIV_set(dstr, SvIVX(sstr)); |
1d7c1841 GS |
10829 | break; |
10830 | case SVt_NV: | |
10831 | SvANY(dstr) = new_XNV(); | |
9d6ce603 | 10832 | SvNV_set(dstr, SvNVX(sstr)); |
1d7c1841 GS |
10833 | break; |
10834 | case SVt_RV: | |
10835 | SvANY(dstr) = new_XRV(); | |
83841fad | 10836 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10837 | break; |
10838 | case SVt_PV: | |
10839 | SvANY(dstr) = new_XPV(); | |
b162af07 SP |
10840 | SvCUR_set(dstr, SvCUR(sstr)); |
10841 | SvLEN_set(dstr, SvLEN(sstr)); | |
83841fad | 10842 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10843 | break; |
10844 | case SVt_PVIV: | |
10845 | SvANY(dstr) = new_XPVIV(); | |
b162af07 SP |
10846 | SvCUR_set(dstr, SvCUR(sstr)); |
10847 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10848 | SvIV_set(dstr, SvIVX(sstr)); |
83841fad | 10849 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10850 | break; |
10851 | case SVt_PVNV: | |
10852 | SvANY(dstr) = new_XPVNV(); | |
b162af07 SP |
10853 | SvCUR_set(dstr, SvCUR(sstr)); |
10854 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10855 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10856 | SvNV_set(dstr, SvNVX(sstr)); |
83841fad | 10857 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10858 | break; |
10859 | case SVt_PVMG: | |
10860 | SvANY(dstr) = new_XPVMG(); | |
b162af07 SP |
10861 | SvCUR_set(dstr, SvCUR(sstr)); |
10862 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10863 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10864 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10865 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10866 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10867 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10868 | break; |
10869 | case SVt_PVBM: | |
10870 | SvANY(dstr) = new_XPVBM(); | |
b162af07 SP |
10871 | SvCUR_set(dstr, SvCUR(sstr)); |
10872 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10873 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10874 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10875 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10876 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10877 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10878 | BmRARE(dstr) = BmRARE(sstr); |
10879 | BmUSEFUL(dstr) = BmUSEFUL(sstr); | |
10880 | BmPREVIOUS(dstr)= BmPREVIOUS(sstr); | |
10881 | break; | |
10882 | case SVt_PVLV: | |
10883 | SvANY(dstr) = new_XPVLV(); | |
b162af07 SP |
10884 | SvCUR_set(dstr, SvCUR(sstr)); |
10885 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10886 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10887 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10888 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10889 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10890 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10891 | LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */ |
10892 | LvTARGLEN(dstr) = LvTARGLEN(sstr); | |
dd28f7bb DM |
10893 | if (LvTYPE(sstr) == 't') /* for tie: unrefcnted fake (SV**) */ |
10894 | LvTARG(dstr) = dstr; | |
10895 | else if (LvTYPE(sstr) == 'T') /* for tie: fake HE */ | |
10896 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(sstr), 0, param); | |
10897 | else | |
10898 | LvTARG(dstr) = sv_dup_inc(LvTARG(sstr), param); | |
1d7c1841 GS |
10899 | LvTYPE(dstr) = LvTYPE(sstr); |
10900 | break; | |
10901 | case SVt_PVGV: | |
7fb37951 | 10902 | if (GvUNIQUE((GV*)sstr)) { |
5bd07a3d | 10903 | SV *share; |
59b40662 | 10904 | if ((share = gv_share(sstr, param))) { |
5bd07a3d DM |
10905 | del_SV(dstr); |
10906 | dstr = share; | |
37e20706 | 10907 | ptr_table_store(PL_ptr_table, sstr, dstr); |
5bd07a3d DM |
10908 | #if 0 |
10909 | PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n", | |
10910 | HvNAME(GvSTASH(share)), GvNAME(share)); | |
10911 | #endif | |
10912 | break; | |
10913 | } | |
10914 | } | |
1d7c1841 | 10915 | SvANY(dstr) = new_XPVGV(); |
b162af07 SP |
10916 | SvCUR_set(dstr, SvCUR(sstr)); |
10917 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10918 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10919 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10920 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10921 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10922 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10923 | GvNAMELEN(dstr) = GvNAMELEN(sstr); |
10924 | GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr)); | |
d2d73c3e | 10925 | GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr), param); |
1d7c1841 | 10926 | GvFLAGS(dstr) = GvFLAGS(sstr); |
d2d73c3e | 10927 | GvGP(dstr) = gp_dup(GvGP(sstr), param); |
1d7c1841 GS |
10928 | (void)GpREFCNT_inc(GvGP(dstr)); |
10929 | break; | |
10930 | case SVt_PVIO: | |
10931 | SvANY(dstr) = new_XPVIO(); | |
b162af07 SP |
10932 | SvCUR_set(dstr, SvCUR(sstr)); |
10933 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10934 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10935 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10936 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10937 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10938 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
a8fc9800 | 10939 | IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10940 | if (IoOFP(sstr) == IoIFP(sstr)) |
10941 | IoOFP(dstr) = IoIFP(dstr); | |
10942 | else | |
a8fc9800 | 10943 | IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10944 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
10945 | if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP)) | |
10946 | IoDIRP(dstr) = dirp_dup(IoDIRP(sstr)); | |
10947 | else | |
10948 | IoDIRP(dstr) = IoDIRP(sstr); | |
10949 | IoLINES(dstr) = IoLINES(sstr); | |
10950 | IoPAGE(dstr) = IoPAGE(sstr); | |
10951 | IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr); | |
10952 | IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr); | |
7a5fa8a2 | 10953 | if(IoFLAGS(sstr) & IOf_FAKE_DIRP) { |
5a37521b AB |
10954 | /* I have no idea why fake dirp (rsfps) |
10955 | should be treaded differently but otherwise | |
10956 | we end up with leaks -- sky*/ | |
10957 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(sstr), param); | |
10958 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(sstr), param); | |
10959 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(sstr), param); | |
10960 | } else { | |
10961 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr), param); | |
10962 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr), param); | |
10963 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr), param); | |
10964 | } | |
1d7c1841 | 10965 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr)); |
1d7c1841 | 10966 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr)); |
1d7c1841 | 10967 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr)); |
1d7c1841 GS |
10968 | IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr); |
10969 | IoTYPE(dstr) = IoTYPE(sstr); | |
10970 | IoFLAGS(dstr) = IoFLAGS(sstr); | |
10971 | break; | |
10972 | case SVt_PVAV: | |
10973 | SvANY(dstr) = new_XPVAV(); | |
b162af07 SP |
10974 | SvCUR_set(dstr, SvCUR(sstr)); |
10975 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10976 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10977 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10978 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10979 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
d2d73c3e | 10980 | AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr), param); |
1d7c1841 GS |
10981 | if (AvARRAY((AV*)sstr)) { |
10982 | SV **dst_ary, **src_ary; | |
10983 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10984 | ||
10985 | src_ary = AvARRAY((AV*)sstr); | |
10986 | Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*); | |
10987 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); | |
f880fe2f | 10988 | SvPV_set(dstr, (char*)dst_ary); |
1d7c1841 GS |
10989 | AvALLOC((AV*)dstr) = dst_ary; |
10990 | if (AvREAL((AV*)sstr)) { | |
10991 | while (items-- > 0) | |
d2d73c3e | 10992 | *dst_ary++ = sv_dup_inc(*src_ary++, param); |
1d7c1841 GS |
10993 | } |
10994 | else { | |
10995 | while (items-- > 0) | |
d2d73c3e | 10996 | *dst_ary++ = sv_dup(*src_ary++, param); |
1d7c1841 GS |
10997 | } |
10998 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10999 | while (items-- > 0) { | |
11000 | *dst_ary++ = &PL_sv_undef; | |
11001 | } | |
11002 | } | |
11003 | else { | |
f880fe2f | 11004 | SvPV_set(dstr, Nullch); |
1d7c1841 GS |
11005 | AvALLOC((AV*)dstr) = (SV**)NULL; |
11006 | } | |
11007 | break; | |
11008 | case SVt_PVHV: | |
11009 | SvANY(dstr) = new_XPVHV(); | |
b162af07 SP |
11010 | SvCUR_set(dstr, SvCUR(sstr)); |
11011 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 11012 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 11013 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
11014 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
11015 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
1d7c1841 GS |
11016 | HvRITER((HV*)dstr) = HvRITER((HV*)sstr); |
11017 | if (HvARRAY((HV*)sstr)) { | |
1d7c1841 GS |
11018 | STRLEN i = 0; |
11019 | XPVHV *dxhv = (XPVHV*)SvANY(dstr); | |
11020 | XPVHV *sxhv = (XPVHV*)SvANY(sstr); | |
11021 | Newz(0, dxhv->xhv_array, | |
11022 | PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char); | |
11023 | while (i <= sxhv->xhv_max) { | |
11024 | ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i], | |
eb160463 GS |
11025 | (bool)!!HvSHAREKEYS(sstr), |
11026 | param); | |
1d7c1841 GS |
11027 | ++i; |
11028 | } | |
eb160463 GS |
11029 | dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, |
11030 | (bool)!!HvSHAREKEYS(sstr), param); | |
1d7c1841 GS |
11031 | } |
11032 | else { | |
f880fe2f | 11033 | SvPV_set(dstr, Nullch); |
1d7c1841 GS |
11034 | HvEITER((HV*)dstr) = (HE*)NULL; |
11035 | } | |
11036 | HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */ | |
11037 | HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr)); | |
c43294b8 | 11038 | /* Record stashes for possible cloning in Perl_clone(). */ |
6676db26 | 11039 | if(HvNAME((HV*)dstr)) |
d2d73c3e | 11040 | av_push(param->stashes, dstr); |
1d7c1841 GS |
11041 | break; |
11042 | case SVt_PVFM: | |
11043 | SvANY(dstr) = new_XPVFM(); | |
11044 | FmLINES(dstr) = FmLINES(sstr); | |
11045 | goto dup_pvcv; | |
11046 | /* NOTREACHED */ | |
11047 | case SVt_PVCV: | |
11048 | SvANY(dstr) = new_XPVCV(); | |
d2d73c3e | 11049 | dup_pvcv: |
b162af07 SP |
11050 | SvCUR_set(dstr, SvCUR(sstr)); |
11051 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 11052 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 11053 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
11054 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
11055 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 11056 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
d2d73c3e | 11057 | CvSTASH(dstr) = hv_dup(CvSTASH(sstr), param); /* NOTE: not refcounted */ |
1d7c1841 | 11058 | CvSTART(dstr) = CvSTART(sstr); |
b34c0dd4 | 11059 | OP_REFCNT_LOCK; |
1d7c1841 | 11060 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr)); |
b34c0dd4 | 11061 | OP_REFCNT_UNLOCK; |
1d7c1841 GS |
11062 | CvXSUB(dstr) = CvXSUB(sstr); |
11063 | CvXSUBANY(dstr) = CvXSUBANY(sstr); | |
01485f8b DM |
11064 | if (CvCONST(sstr)) { |
11065 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(sstr)) ? | |
11066 | SvREFCNT_inc(CvXSUBANY(sstr).any_ptr) : | |
8f77bfdb | 11067 | sv_dup_inc((SV *)CvXSUBANY(sstr).any_ptr, param); |
01485f8b | 11068 | } |
b23f1a86 DM |
11069 | /* don't dup if copying back - CvGV isn't refcounted, so the |
11070 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
11071 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
11072 | Nullgv : gv_dup(CvGV(sstr), param) ; | |
d2d73c3e AB |
11073 | if (param->flags & CLONEf_COPY_STACKS) { |
11074 | CvDEPTH(dstr) = CvDEPTH(sstr); | |
11075 | } else { | |
11076 | CvDEPTH(dstr) = 0; | |
11077 | } | |
dd2155a4 | 11078 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); |
7dafbf52 DM |
11079 | CvOUTSIDE_SEQ(dstr) = CvOUTSIDE_SEQ(sstr); |
11080 | CvOUTSIDE(dstr) = | |
11081 | CvWEAKOUTSIDE(sstr) | |
11082 | ? cv_dup( CvOUTSIDE(sstr), param) | |
11083 | : cv_dup_inc(CvOUTSIDE(sstr), param); | |
1d7c1841 | 11084 | CvFLAGS(dstr) = CvFLAGS(sstr); |
54356c7d | 11085 | CvFILE(dstr) = CvXSUB(sstr) ? CvFILE(sstr) : SAVEPV(CvFILE(sstr)); |
1d7c1841 GS |
11086 | break; |
11087 | default: | |
c803eecc | 11088 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", (IV)SvTYPE(sstr)); |
1d7c1841 GS |
11089 | break; |
11090 | } | |
11091 | ||
11092 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
11093 | ++PL_sv_objcount; | |
11094 | ||
11095 | return dstr; | |
d2d73c3e | 11096 | } |
1d7c1841 | 11097 | |
645c22ef DM |
11098 | /* duplicate a context */ |
11099 | ||
1d7c1841 | 11100 | PERL_CONTEXT * |
a8fc9800 | 11101 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
11102 | { |
11103 | PERL_CONTEXT *ncxs; | |
11104 | ||
11105 | if (!cxs) | |
11106 | return (PERL_CONTEXT*)NULL; | |
11107 | ||
11108 | /* look for it in the table first */ | |
11109 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
11110 | if (ncxs) | |
11111 | return ncxs; | |
11112 | ||
11113 | /* create anew and remember what it is */ | |
11114 | Newz(56, ncxs, max + 1, PERL_CONTEXT); | |
11115 | ptr_table_store(PL_ptr_table, cxs, ncxs); | |
11116 | ||
11117 | while (ix >= 0) { | |
11118 | PERL_CONTEXT *cx = &cxs[ix]; | |
11119 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
11120 | ncx->cx_type = cx->cx_type; | |
11121 | if (CxTYPE(cx) == CXt_SUBST) { | |
11122 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
11123 | } | |
11124 | else { | |
11125 | ncx->blk_oldsp = cx->blk_oldsp; | |
11126 | ncx->blk_oldcop = cx->blk_oldcop; | |
1d7c1841 GS |
11127 | ncx->blk_oldmarksp = cx->blk_oldmarksp; |
11128 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
11129 | ncx->blk_oldpm = cx->blk_oldpm; | |
11130 | ncx->blk_gimme = cx->blk_gimme; | |
11131 | switch (CxTYPE(cx)) { | |
11132 | case CXt_SUB: | |
11133 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
11134 | ? cv_dup_inc(cx->blk_sub.cv, param) |
11135 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 11136 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 11137 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 11138 | : Nullav); |
d2d73c3e | 11139 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
11140 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
11141 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
11142 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
f39bc417 | 11143 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
11144 | break; |
11145 | case CXt_EVAL: | |
11146 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
11147 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 11148 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 11149 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 11150 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
f39bc417 | 11151 | ncx->blk_eval.retop = cx->blk_eval.retop; |
1d7c1841 GS |
11152 | break; |
11153 | case CXt_LOOP: | |
11154 | ncx->blk_loop.label = cx->blk_loop.label; | |
11155 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
11156 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
11157 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
11158 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
11159 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
11160 | ? cx->blk_loop.iterdata | |
d2d73c3e | 11161 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
11162 | ncx->blk_loop.oldcomppad |
11163 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
11164 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
11165 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
11166 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
11167 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
11168 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
11169 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
11170 | break; | |
11171 | case CXt_FORMAT: | |
d2d73c3e AB |
11172 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
11173 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
11174 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 | 11175 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
f39bc417 | 11176 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
11177 | break; |
11178 | case CXt_BLOCK: | |
11179 | case CXt_NULL: | |
11180 | break; | |
11181 | } | |
11182 | } | |
11183 | --ix; | |
11184 | } | |
11185 | return ncxs; | |
11186 | } | |
11187 | ||
645c22ef DM |
11188 | /* duplicate a stack info structure */ |
11189 | ||
1d7c1841 | 11190 | PERL_SI * |
a8fc9800 | 11191 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
11192 | { |
11193 | PERL_SI *nsi; | |
11194 | ||
11195 | if (!si) | |
11196 | return (PERL_SI*)NULL; | |
11197 | ||
11198 | /* look for it in the table first */ | |
11199 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
11200 | if (nsi) | |
11201 | return nsi; | |
11202 | ||
11203 | /* create anew and remember what it is */ | |
11204 | Newz(56, nsi, 1, PERL_SI); | |
11205 | ptr_table_store(PL_ptr_table, si, nsi); | |
11206 | ||
d2d73c3e | 11207 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
11208 | nsi->si_cxix = si->si_cxix; |
11209 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 11210 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 11211 | nsi->si_type = si->si_type; |
d2d73c3e AB |
11212 | nsi->si_prev = si_dup(si->si_prev, param); |
11213 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
11214 | nsi->si_markoff = si->si_markoff; |
11215 | ||
11216 | return nsi; | |
11217 | } | |
11218 | ||
11219 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
11220 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
11221 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
11222 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
11223 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
11224 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
11225 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
11226 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
11227 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
11228 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
11229 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
11230 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
11231 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
11232 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
11233 | ||
11234 | /* XXXXX todo */ | |
11235 | #define pv_dup_inc(p) SAVEPV(p) | |
11236 | #define pv_dup(p) SAVEPV(p) | |
11237 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
11238 | ||
645c22ef DM |
11239 | /* map any object to the new equivent - either something in the |
11240 | * ptr table, or something in the interpreter structure | |
11241 | */ | |
11242 | ||
1d7c1841 GS |
11243 | void * |
11244 | Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl) | |
11245 | { | |
11246 | void *ret; | |
11247 | ||
11248 | if (!v) | |
11249 | return (void*)NULL; | |
11250 | ||
11251 | /* look for it in the table first */ | |
11252 | ret = ptr_table_fetch(PL_ptr_table, v); | |
11253 | if (ret) | |
11254 | return ret; | |
11255 | ||
11256 | /* see if it is part of the interpreter structure */ | |
11257 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 11258 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 11259 | else { |
1d7c1841 | 11260 | ret = v; |
05ec9bb3 | 11261 | } |
1d7c1841 GS |
11262 | |
11263 | return ret; | |
11264 | } | |
11265 | ||
645c22ef DM |
11266 | /* duplicate the save stack */ |
11267 | ||
1d7c1841 | 11268 | ANY * |
a8fc9800 | 11269 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 GS |
11270 | { |
11271 | ANY *ss = proto_perl->Tsavestack; | |
11272 | I32 ix = proto_perl->Tsavestack_ix; | |
11273 | I32 max = proto_perl->Tsavestack_max; | |
11274 | ANY *nss; | |
11275 | SV *sv; | |
11276 | GV *gv; | |
11277 | AV *av; | |
11278 | HV *hv; | |
11279 | void* ptr; | |
11280 | int intval; | |
11281 | long longval; | |
11282 | GP *gp; | |
11283 | IV iv; | |
11284 | I32 i; | |
c4e33207 | 11285 | char *c = NULL; |
1d7c1841 | 11286 | void (*dptr) (void*); |
acfe0abc | 11287 | void (*dxptr) (pTHX_ void*); |
e977893f | 11288 | OP *o; |
1d7c1841 GS |
11289 | |
11290 | Newz(54, nss, max, ANY); | |
11291 | ||
11292 | while (ix > 0) { | |
11293 | i = POPINT(ss,ix); | |
11294 | TOPINT(nss,ix) = i; | |
11295 | switch (i) { | |
11296 | case SAVEt_ITEM: /* normal string */ | |
11297 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11298 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11299 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11300 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11301 | break; |
11302 | case SAVEt_SV: /* scalar reference */ | |
11303 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11304 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11305 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11306 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 11307 | break; |
f4dd75d9 GS |
11308 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
11309 | c = (char*)POPPTR(ss,ix); | |
11310 | TOPPTR(nss,ix) = pv_dup(c); | |
11311 | ptr = POPPTR(ss,ix); | |
11312 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11313 | break; | |
05ec9bb3 NIS |
11314 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
11315 | c = (char*)POPPTR(ss,ix); | |
11316 | TOPPTR(nss,ix) = savesharedpv(c); | |
11317 | ptr = POPPTR(ss,ix); | |
11318 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11319 | break; | |
1d7c1841 GS |
11320 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
11321 | case SAVEt_SVREF: /* scalar reference */ | |
11322 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11323 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11324 | ptr = POPPTR(ss,ix); |
11325 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
11326 | break; | |
11327 | case SAVEt_AV: /* array reference */ | |
11328 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11329 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 11330 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11331 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11332 | break; |
11333 | case SAVEt_HV: /* hash reference */ | |
11334 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11335 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 11336 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11337 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11338 | break; |
11339 | case SAVEt_INT: /* int reference */ | |
11340 | ptr = POPPTR(ss,ix); | |
11341 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11342 | intval = (int)POPINT(ss,ix); | |
11343 | TOPINT(nss,ix) = intval; | |
11344 | break; | |
11345 | case SAVEt_LONG: /* long reference */ | |
11346 | ptr = POPPTR(ss,ix); | |
11347 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11348 | longval = (long)POPLONG(ss,ix); | |
11349 | TOPLONG(nss,ix) = longval; | |
11350 | break; | |
11351 | case SAVEt_I32: /* I32 reference */ | |
11352 | case SAVEt_I16: /* I16 reference */ | |
11353 | case SAVEt_I8: /* I8 reference */ | |
11354 | ptr = POPPTR(ss,ix); | |
11355 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11356 | i = POPINT(ss,ix); | |
11357 | TOPINT(nss,ix) = i; | |
11358 | break; | |
11359 | case SAVEt_IV: /* IV reference */ | |
11360 | ptr = POPPTR(ss,ix); | |
11361 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11362 | iv = POPIV(ss,ix); | |
11363 | TOPIV(nss,ix) = iv; | |
11364 | break; | |
11365 | case SAVEt_SPTR: /* SV* reference */ | |
11366 | ptr = POPPTR(ss,ix); | |
11367 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11368 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11369 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
11370 | break; |
11371 | case SAVEt_VPTR: /* random* reference */ | |
11372 | ptr = POPPTR(ss,ix); | |
11373 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11374 | ptr = POPPTR(ss,ix); | |
11375 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11376 | break; | |
11377 | case SAVEt_PPTR: /* char* reference */ | |
11378 | ptr = POPPTR(ss,ix); | |
11379 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11380 | c = (char*)POPPTR(ss,ix); | |
11381 | TOPPTR(nss,ix) = pv_dup(c); | |
11382 | break; | |
11383 | case SAVEt_HPTR: /* HV* reference */ | |
11384 | ptr = POPPTR(ss,ix); | |
11385 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11386 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11387 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
11388 | break; |
11389 | case SAVEt_APTR: /* AV* reference */ | |
11390 | ptr = POPPTR(ss,ix); | |
11391 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11392 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11393 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
11394 | break; |
11395 | case SAVEt_NSTAB: | |
11396 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 11397 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11398 | break; |
11399 | case SAVEt_GP: /* scalar reference */ | |
11400 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 11401 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
11402 | (void)GpREFCNT_inc(gp); |
11403 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 11404 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
11405 | c = (char*)POPPTR(ss,ix); |
11406 | TOPPTR(nss,ix) = pv_dup(c); | |
11407 | iv = POPIV(ss,ix); | |
11408 | TOPIV(nss,ix) = iv; | |
11409 | iv = POPIV(ss,ix); | |
11410 | TOPIV(nss,ix) = iv; | |
11411 | break; | |
11412 | case SAVEt_FREESV: | |
26d9b02f | 11413 | case SAVEt_MORTALIZESV: |
1d7c1841 | 11414 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11415 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11416 | break; |
11417 | case SAVEt_FREEOP: | |
11418 | ptr = POPPTR(ss,ix); | |
11419 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
11420 | /* these are assumed to be refcounted properly */ | |
11421 | switch (((OP*)ptr)->op_type) { | |
11422 | case OP_LEAVESUB: | |
11423 | case OP_LEAVESUBLV: | |
11424 | case OP_LEAVEEVAL: | |
11425 | case OP_LEAVE: | |
11426 | case OP_SCOPE: | |
11427 | case OP_LEAVEWRITE: | |
e977893f GS |
11428 | TOPPTR(nss,ix) = ptr; |
11429 | o = (OP*)ptr; | |
11430 | OpREFCNT_inc(o); | |
1d7c1841 GS |
11431 | break; |
11432 | default: | |
11433 | TOPPTR(nss,ix) = Nullop; | |
11434 | break; | |
11435 | } | |
11436 | } | |
11437 | else | |
11438 | TOPPTR(nss,ix) = Nullop; | |
11439 | break; | |
11440 | case SAVEt_FREEPV: | |
11441 | c = (char*)POPPTR(ss,ix); | |
11442 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11443 | break; | |
11444 | case SAVEt_CLEARSV: | |
11445 | longval = POPLONG(ss,ix); | |
11446 | TOPLONG(nss,ix) = longval; | |
11447 | break; | |
11448 | case SAVEt_DELETE: | |
11449 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11450 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11451 | c = (char*)POPPTR(ss,ix); |
11452 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11453 | i = POPINT(ss,ix); | |
11454 | TOPINT(nss,ix) = i; | |
11455 | break; | |
11456 | case SAVEt_DESTRUCTOR: | |
11457 | ptr = POPPTR(ss,ix); | |
11458 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11459 | dptr = POPDPTR(ss,ix); | |
ef75a179 | 11460 | TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl); |
1d7c1841 GS |
11461 | break; |
11462 | case SAVEt_DESTRUCTOR_X: | |
11463 | ptr = POPPTR(ss,ix); | |
11464 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11465 | dxptr = POPDXPTR(ss,ix); | |
acfe0abc | 11466 | TOPDXPTR(nss,ix) = (void (*)(pTHX_ void*))any_dup((void *)dxptr, proto_perl); |
1d7c1841 GS |
11467 | break; |
11468 | case SAVEt_REGCONTEXT: | |
11469 | case SAVEt_ALLOC: | |
11470 | i = POPINT(ss,ix); | |
11471 | TOPINT(nss,ix) = i; | |
11472 | ix -= i; | |
11473 | break; | |
11474 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
11475 | i = POPINT(ss,ix); | |
11476 | TOPINT(nss,ix) = i; | |
11477 | break; | |
11478 | case SAVEt_AELEM: /* array element */ | |
11479 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11480 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11481 | i = POPINT(ss,ix); |
11482 | TOPINT(nss,ix) = i; | |
11483 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11484 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
11485 | break; |
11486 | case SAVEt_HELEM: /* hash element */ | |
11487 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11488 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11489 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11490 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11491 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 11492 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11493 | break; |
11494 | case SAVEt_OP: | |
11495 | ptr = POPPTR(ss,ix); | |
11496 | TOPPTR(nss,ix) = ptr; | |
11497 | break; | |
11498 | case SAVEt_HINTS: | |
11499 | i = POPINT(ss,ix); | |
11500 | TOPINT(nss,ix) = i; | |
11501 | break; | |
c4410b1b GS |
11502 | case SAVEt_COMPPAD: |
11503 | av = (AV*)POPPTR(ss,ix); | |
58ed4fbe | 11504 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 11505 | break; |
c3564e5c GS |
11506 | case SAVEt_PADSV: |
11507 | longval = (long)POPLONG(ss,ix); | |
11508 | TOPLONG(nss,ix) = longval; | |
11509 | ptr = POPPTR(ss,ix); | |
11510 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11511 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11512 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 11513 | break; |
a1bb4754 | 11514 | case SAVEt_BOOL: |
38d8b13e | 11515 | ptr = POPPTR(ss,ix); |
b9609c01 | 11516 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 11517 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 11518 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 11519 | break; |
8bd2680e MHM |
11520 | case SAVEt_SET_SVFLAGS: |
11521 | i = POPINT(ss,ix); | |
11522 | TOPINT(nss,ix) = i; | |
11523 | i = POPINT(ss,ix); | |
11524 | TOPINT(nss,ix) = i; | |
11525 | sv = (SV*)POPPTR(ss,ix); | |
11526 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
11527 | break; | |
1d7c1841 GS |
11528 | default: |
11529 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
11530 | } | |
11531 | } | |
11532 | ||
11533 | return nss; | |
11534 | } | |
11535 | ||
9660f481 DM |
11536 | |
11537 | /* if sv is a stash, call $class->CLONE_SKIP(), and set the SVphv_CLONEABLE | |
11538 | * flag to the result. This is done for each stash before cloning starts, | |
11539 | * so we know which stashes want their objects cloned */ | |
11540 | ||
11541 | static void | |
11542 | do_mark_cloneable_stash(pTHX_ SV *sv) | |
11543 | { | |
11544 | if (HvNAME((HV*)sv)) { | |
11545 | GV* cloner = gv_fetchmethod_autoload((HV*)sv, "CLONE_SKIP", 0); | |
11546 | SvFLAGS(sv) |= SVphv_CLONEABLE; /* clone objects by default */ | |
11547 | if (cloner && GvCV(cloner)) { | |
11548 | dSP; | |
11549 | UV status; | |
11550 | ||
11551 | ENTER; | |
11552 | SAVETMPS; | |
11553 | PUSHMARK(SP); | |
11554 | XPUSHs(sv_2mortal(newSVpv(HvNAME((HV*)sv), 0))); | |
11555 | PUTBACK; | |
11556 | call_sv((SV*)GvCV(cloner), G_SCALAR); | |
11557 | SPAGAIN; | |
11558 | status = POPu; | |
11559 | PUTBACK; | |
11560 | FREETMPS; | |
11561 | LEAVE; | |
11562 | if (status) | |
11563 | SvFLAGS(sv) &= ~SVphv_CLONEABLE; | |
11564 | } | |
11565 | } | |
11566 | } | |
11567 | ||
11568 | ||
11569 | ||
645c22ef DM |
11570 | /* |
11571 | =for apidoc perl_clone | |
11572 | ||
11573 | Create and return a new interpreter by cloning the current one. | |
11574 | ||
4be49ee6 | 11575 | perl_clone takes these flags as parameters: |
6a78b4db | 11576 | |
7a5fa8a2 NIS |
11577 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, |
11578 | without it we only clone the data and zero the stacks, | |
11579 | with it we copy the stacks and the new perl interpreter is | |
11580 | ready to run at the exact same point as the previous one. | |
11581 | The pseudo-fork code uses COPY_STACKS while the | |
6a78b4db AB |
11582 | threads->new doesn't. |
11583 | ||
11584 | CLONEf_KEEP_PTR_TABLE | |
7a5fa8a2 NIS |
11585 | perl_clone keeps a ptr_table with the pointer of the old |
11586 | variable as a key and the new variable as a value, | |
11587 | this allows it to check if something has been cloned and not | |
11588 | clone it again but rather just use the value and increase the | |
11589 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
11590 | the ptr_table using the function | |
11591 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
11592 | reason to keep it around is if you want to dup some of your own | |
11593 | variable who are outside the graph perl scans, example of this | |
6a78b4db AB |
11594 | code is in threads.xs create |
11595 | ||
11596 | CLONEf_CLONE_HOST | |
7a5fa8a2 NIS |
11597 | This is a win32 thing, it is ignored on unix, it tells perls |
11598 | win32host code (which is c++) to clone itself, this is needed on | |
11599 | win32 if you want to run two threads at the same time, | |
11600 | if you just want to do some stuff in a separate perl interpreter | |
11601 | and then throw it away and return to the original one, | |
6a78b4db AB |
11602 | you don't need to do anything. |
11603 | ||
645c22ef DM |
11604 | =cut |
11605 | */ | |
11606 | ||
11607 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
11608 | EXTERN_C PerlInterpreter * |
11609 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 11610 | |
1d7c1841 GS |
11611 | PerlInterpreter * |
11612 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
11613 | { | |
27da23d5 | 11614 | dVAR; |
1d7c1841 | 11615 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
11616 | |
11617 | /* perlhost.h so we need to call into it | |
11618 | to clone the host, CPerlHost should have a c interface, sky */ | |
11619 | ||
11620 | if (flags & CLONEf_CLONE_HOST) { | |
11621 | return perl_clone_host(proto_perl,flags); | |
11622 | } | |
11623 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
11624 | proto_perl->IMem, |
11625 | proto_perl->IMemShared, | |
11626 | proto_perl->IMemParse, | |
11627 | proto_perl->IEnv, | |
11628 | proto_perl->IStdIO, | |
11629 | proto_perl->ILIO, | |
11630 | proto_perl->IDir, | |
11631 | proto_perl->ISock, | |
11632 | proto_perl->IProc); | |
11633 | } | |
11634 | ||
11635 | PerlInterpreter * | |
11636 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
11637 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
11638 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
11639 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
11640 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
11641 | struct IPerlProc* ipP) | |
11642 | { | |
11643 | /* XXX many of the string copies here can be optimized if they're | |
11644 | * constants; they need to be allocated as common memory and just | |
11645 | * their pointers copied. */ | |
11646 | ||
11647 | IV i; | |
64aa0685 GS |
11648 | CLONE_PARAMS clone_params; |
11649 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 11650 | |
1d7c1841 | 11651 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
9660f481 DM |
11652 | /* for each stash, determine whether its objects should be cloned */ |
11653 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 11654 | PERL_SET_THX(my_perl); |
1d7c1841 | 11655 | |
acfe0abc | 11656 | # ifdef DEBUGGING |
a4530404 | 11657 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11658 | PL_op = Nullop; |
c008732b | 11659 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11660 | PL_markstack = 0; |
11661 | PL_scopestack = 0; | |
11662 | PL_savestack = 0; | |
22f7c9c9 JH |
11663 | PL_savestack_ix = 0; |
11664 | PL_savestack_max = -1; | |
66fe0623 | 11665 | PL_sig_pending = 0; |
25596c82 | 11666 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 11667 | # else /* !DEBUGGING */ |
1d7c1841 | 11668 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 11669 | # endif /* DEBUGGING */ |
1d7c1841 GS |
11670 | |
11671 | /* host pointers */ | |
11672 | PL_Mem = ipM; | |
11673 | PL_MemShared = ipMS; | |
11674 | PL_MemParse = ipMP; | |
11675 | PL_Env = ipE; | |
11676 | PL_StdIO = ipStd; | |
11677 | PL_LIO = ipLIO; | |
11678 | PL_Dir = ipD; | |
11679 | PL_Sock = ipS; | |
11680 | PL_Proc = ipP; | |
1d7c1841 GS |
11681 | #else /* !PERL_IMPLICIT_SYS */ |
11682 | IV i; | |
64aa0685 GS |
11683 | CLONE_PARAMS clone_params; |
11684 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 11685 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
9660f481 DM |
11686 | /* for each stash, determine whether its objects should be cloned */ |
11687 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 11688 | PERL_SET_THX(my_perl); |
1d7c1841 GS |
11689 | |
11690 | # ifdef DEBUGGING | |
a4530404 | 11691 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11692 | PL_op = Nullop; |
c008732b | 11693 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11694 | PL_markstack = 0; |
11695 | PL_scopestack = 0; | |
11696 | PL_savestack = 0; | |
22f7c9c9 JH |
11697 | PL_savestack_ix = 0; |
11698 | PL_savestack_max = -1; | |
66fe0623 | 11699 | PL_sig_pending = 0; |
25596c82 | 11700 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
11701 | # else /* !DEBUGGING */ |
11702 | Zero(my_perl, 1, PerlInterpreter); | |
11703 | # endif /* DEBUGGING */ | |
11704 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 11705 | param->flags = flags; |
59b40662 | 11706 | param->proto_perl = proto_perl; |
1d7c1841 GS |
11707 | |
11708 | /* arena roots */ | |
11709 | PL_xiv_arenaroot = NULL; | |
11710 | PL_xiv_root = NULL; | |
612f20c3 | 11711 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 11712 | PL_xnv_root = NULL; |
612f20c3 | 11713 | PL_xrv_arenaroot = NULL; |
1d7c1841 | 11714 | PL_xrv_root = NULL; |
612f20c3 | 11715 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 11716 | PL_xpv_root = NULL; |
612f20c3 | 11717 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 11718 | PL_xpviv_root = NULL; |
612f20c3 | 11719 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 11720 | PL_xpvnv_root = NULL; |
612f20c3 | 11721 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 11722 | PL_xpvcv_root = NULL; |
612f20c3 | 11723 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 11724 | PL_xpvav_root = NULL; |
612f20c3 | 11725 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 11726 | PL_xpvhv_root = NULL; |
612f20c3 | 11727 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 11728 | PL_xpvmg_root = NULL; |
7552b40b DM |
11729 | PL_xpvgv_arenaroot = NULL; |
11730 | PL_xpvgv_root = NULL; | |
612f20c3 | 11731 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 11732 | PL_xpvlv_root = NULL; |
612f20c3 | 11733 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 11734 | PL_xpvbm_root = NULL; |
612f20c3 | 11735 | PL_he_arenaroot = NULL; |
1d7c1841 | 11736 | PL_he_root = NULL; |
892b45be | 11737 | #if defined(USE_ITHREADS) |
32e691d0 NC |
11738 | PL_pte_arenaroot = NULL; |
11739 | PL_pte_root = NULL; | |
892b45be | 11740 | #endif |
1d7c1841 GS |
11741 | PL_nice_chunk = NULL; |
11742 | PL_nice_chunk_size = 0; | |
11743 | PL_sv_count = 0; | |
11744 | PL_sv_objcount = 0; | |
11745 | PL_sv_root = Nullsv; | |
11746 | PL_sv_arenaroot = Nullsv; | |
11747 | ||
11748 | PL_debug = proto_perl->Idebug; | |
11749 | ||
e5dd39fc | 11750 | #ifdef USE_REENTRANT_API |
68853529 SB |
11751 | /* XXX: things like -Dm will segfault here in perlio, but doing |
11752 | * PERL_SET_CONTEXT(proto_perl); | |
11753 | * breaks too many other things | |
11754 | */ | |
59bd0823 | 11755 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
11756 | #endif |
11757 | ||
1d7c1841 GS |
11758 | /* create SV map for pointer relocation */ |
11759 | PL_ptr_table = ptr_table_new(); | |
11760 | ||
11761 | /* initialize these special pointers as early as possible */ | |
11762 | SvANY(&PL_sv_undef) = NULL; | |
11763 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
11764 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
11765 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
11766 | ||
1d7c1841 | 11767 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 | 11768 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
0309f36e NC |
11769 | SvFLAGS(&PL_sv_no) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11770 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 11771 | SvPV_set(&PL_sv_no, SAVEPVN(PL_No, 0)); |
b162af07 SP |
11772 | SvCUR_set(&PL_sv_no, 0); |
11773 | SvLEN_set(&PL_sv_no, 1); | |
45977657 | 11774 | SvIV_set(&PL_sv_no, 0); |
9d6ce603 | 11775 | SvNV_set(&PL_sv_no, 0); |
1d7c1841 GS |
11776 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); |
11777 | ||
1d7c1841 | 11778 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 | 11779 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
0309f36e NC |
11780 | SvFLAGS(&PL_sv_yes) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11781 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 11782 | SvPV_set(&PL_sv_yes, SAVEPVN(PL_Yes, 1)); |
b162af07 SP |
11783 | SvCUR_set(&PL_sv_yes, 1); |
11784 | SvLEN_set(&PL_sv_yes, 2); | |
45977657 | 11785 | SvIV_set(&PL_sv_yes, 1); |
9d6ce603 | 11786 | SvNV_set(&PL_sv_yes, 1); |
1d7c1841 GS |
11787 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); |
11788 | ||
05ec9bb3 | 11789 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
11790 | PL_strtab = newHV(); |
11791 | HvSHAREKEYS_off(PL_strtab); | |
11792 | hv_ksplit(PL_strtab, 512); | |
11793 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); | |
11794 | ||
05ec9bb3 NIS |
11795 | PL_compiling = proto_perl->Icompiling; |
11796 | ||
11797 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
11798 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
11799 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
11800 | ||
11801 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
11802 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
11803 | ||
1d7c1841 GS |
11804 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
11805 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 11806 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 11807 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 11808 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
11809 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
11810 | ||
11811 | /* pseudo environmental stuff */ | |
11812 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 11813 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 11814 | |
d2d73c3e AB |
11815 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
11816 | ||
a1ea730d | 11817 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
11818 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
11819 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 11820 | #endif |
d2d73c3e AB |
11821 | |
11822 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
11823 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
11824 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 11825 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
11826 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
11827 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
11828 | |
11829 | /* switches */ | |
11830 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 11831 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
11832 | PL_localpatches = proto_perl->Ilocalpatches; |
11833 | PL_splitstr = proto_perl->Isplitstr; | |
11834 | PL_preprocess = proto_perl->Ipreprocess; | |
11835 | PL_minus_n = proto_perl->Iminus_n; | |
11836 | PL_minus_p = proto_perl->Iminus_p; | |
11837 | PL_minus_l = proto_perl->Iminus_l; | |
11838 | PL_minus_a = proto_perl->Iminus_a; | |
11839 | PL_minus_F = proto_perl->Iminus_F; | |
11840 | PL_doswitches = proto_perl->Idoswitches; | |
11841 | PL_dowarn = proto_perl->Idowarn; | |
11842 | PL_doextract = proto_perl->Idoextract; | |
11843 | PL_sawampersand = proto_perl->Isawampersand; | |
11844 | PL_unsafe = proto_perl->Iunsafe; | |
11845 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 11846 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
11847 | PL_perldb = proto_perl->Iperldb; |
11848 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 11849 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
11850 | |
11851 | /* magical thingies */ | |
11852 | /* XXX time(&PL_basetime) when asked for? */ | |
11853 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 11854 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
11855 | |
11856 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
11857 | PL_multiline = proto_perl->Imultiline; | |
11858 | PL_statusvalue = proto_perl->Istatusvalue; | |
11859 | #ifdef VMS | |
11860 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
11861 | #endif | |
0a378802 | 11862 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 11863 | |
4a4c6fe3 | 11864 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
11865 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
11866 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 11867 | |
d2f185dc AMS |
11868 | /* Clone the regex array */ |
11869 | PL_regex_padav = newAV(); | |
11870 | { | |
a3b680e6 | 11871 | const I32 len = av_len((AV*)proto_perl->Iregex_padav); |
d2f185dc | 11872 | SV** regexen = AvARRAY((AV*)proto_perl->Iregex_padav); |
0f95fc41 AB |
11873 | av_push(PL_regex_padav, |
11874 | sv_dup_inc(regexen[0],param)); | |
11875 | for(i = 1; i <= len; i++) { | |
11876 | if(SvREPADTMP(regexen[i])) { | |
11877 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 11878 | } else { |
0f95fc41 AB |
11879 | av_push(PL_regex_padav, |
11880 | SvREFCNT_inc( | |
8cf8f3d1 | 11881 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 11882 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
11883 | )); |
11884 | } | |
d2f185dc AMS |
11885 | } |
11886 | } | |
11887 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 11888 | |
1d7c1841 | 11889 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
11890 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
11891 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11892 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11893 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11894 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11895 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
11896 | |
11897 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 11898 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
11899 | |
11900 | /* shortcuts to misc objects */ | |
d2d73c3e | 11901 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
11902 | |
11903 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
11904 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
11905 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11906 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11907 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11908 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11909 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 11910 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
11911 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
11912 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
11913 | |
11914 | /* symbol tables */ | |
d2d73c3e AB |
11915 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
11916 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
11917 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
11918 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11919 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11920 | ||
11921 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 11922 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 11923 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
11924 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11925 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11926 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
11927 | |
11928 | PL_sub_generation = proto_perl->Isub_generation; | |
11929 | ||
11930 | /* funky return mechanisms */ | |
11931 | PL_forkprocess = proto_perl->Iforkprocess; | |
11932 | ||
11933 | /* subprocess state */ | |
d2d73c3e | 11934 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
11935 | |
11936 | /* internal state */ | |
11937 | PL_tainting = proto_perl->Itainting; | |
7135f00b | 11938 | PL_taint_warn = proto_perl->Itaint_warn; |
1d7c1841 GS |
11939 | PL_maxo = proto_perl->Imaxo; |
11940 | if (proto_perl->Iop_mask) | |
11941 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11942 | else | |
11943 | PL_op_mask = Nullch; | |
06492da6 | 11944 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
11945 | |
11946 | /* current interpreter roots */ | |
d2d73c3e | 11947 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
11948 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
11949 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 11950 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
11951 | PL_eval_start = proto_perl->Ieval_start; |
11952 | ||
11953 | /* runtime control stuff */ | |
11954 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11955 | PL_copline = proto_perl->Icopline; | |
11956 | ||
11957 | PL_filemode = proto_perl->Ifilemode; | |
11958 | PL_lastfd = proto_perl->Ilastfd; | |
11959 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11960 | PL_Argv = NULL; | |
11961 | PL_Cmd = Nullch; | |
11962 | PL_gensym = proto_perl->Igensym; | |
11963 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 11964 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
11965 | PL_laststatval = proto_perl->Ilaststatval; |
11966 | PL_laststype = proto_perl->Ilaststype; | |
11967 | PL_mess_sv = Nullsv; | |
11968 | ||
d2d73c3e | 11969 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
11970 | PL_ofmt = SAVEPV(proto_perl->Iofmt); |
11971 | ||
11972 | /* interpreter atexit processing */ | |
11973 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11974 | if (PL_exitlistlen) { | |
11975 | New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11976 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11977 | } | |
11978 | else | |
11979 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 11980 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
11981 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
11982 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
11983 | |
11984 | PL_profiledata = NULL; | |
a8fc9800 | 11985 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 11986 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 11987 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 11988 | |
d2d73c3e | 11989 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
11990 | |
11991 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
11992 | |
11993 | #ifdef HAVE_INTERP_INTERN | |
11994 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11995 | #endif | |
11996 | ||
11997 | /* more statics moved here */ | |
11998 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 11999 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
12000 | |
12001 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
12002 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
12003 | ||
12004 | PL_uid = proto_perl->Iuid; | |
12005 | PL_euid = proto_perl->Ieuid; | |
12006 | PL_gid = proto_perl->Igid; | |
12007 | PL_egid = proto_perl->Iegid; | |
12008 | PL_nomemok = proto_perl->Inomemok; | |
12009 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
12010 | PL_evalseq = proto_perl->Ievalseq; |
12011 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
12012 | PL_origalen = proto_perl->Iorigalen; | |
12013 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
12014 | PL_osname = SAVEPV(proto_perl->Iosname); | |
5c728af0 | 12015 | PL_sh_path_compat = proto_perl->Ish_path_compat; /* XXX never deallocated */ |
1d7c1841 GS |
12016 | PL_sighandlerp = proto_perl->Isighandlerp; |
12017 | ||
12018 | ||
12019 | PL_runops = proto_perl->Irunops; | |
12020 | ||
12021 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
12022 | ||
12023 | #ifdef CSH | |
12024 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 12025 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
12026 | #endif |
12027 | ||
12028 | PL_lex_state = proto_perl->Ilex_state; | |
12029 | PL_lex_defer = proto_perl->Ilex_defer; | |
12030 | PL_lex_expect = proto_perl->Ilex_expect; | |
12031 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
12032 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
12033 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
12034 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
12035 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
12036 | PL_lex_op = proto_perl->Ilex_op; |
12037 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
12038 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
12039 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
12040 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
12041 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
12042 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
12043 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
12044 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
12045 | ||
12046 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
12047 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
12048 | PL_nexttoke = proto_perl->Inexttoke; | |
12049 | ||
1d773130 TB |
12050 | /* XXX This is probably masking the deeper issue of why |
12051 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
12052 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
12053 | * (A little debugging with a watchpoint on it may help.) | |
12054 | */ | |
389edf32 TB |
12055 | if (SvANY(proto_perl->Ilinestr)) { |
12056 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
12057 | i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr); | |
12058 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
12059 | i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr); | |
12060 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
12061 | i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr); | |
12062 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
12063 | i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr); | |
12064 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
12065 | } | |
12066 | else { | |
12067 | PL_linestr = NEWSV(65,79); | |
12068 | sv_upgrade(PL_linestr,SVt_PVIV); | |
12069 | sv_setpvn(PL_linestr,"",0); | |
12070 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
12071 | } | |
1d7c1841 | 12072 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
12073 | PL_pending_ident = proto_perl->Ipending_ident; |
12074 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
12075 | ||
12076 | PL_expect = proto_perl->Iexpect; | |
12077 | ||
12078 | PL_multi_start = proto_perl->Imulti_start; | |
12079 | PL_multi_end = proto_perl->Imulti_end; | |
12080 | PL_multi_open = proto_perl->Imulti_open; | |
12081 | PL_multi_close = proto_perl->Imulti_close; | |
12082 | ||
12083 | PL_error_count = proto_perl->Ierror_count; | |
12084 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 12085 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 12086 | |
1d773130 | 12087 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 TB |
12088 | if (SvANY(proto_perl->Ilinestr)) { |
12089 | i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr); | |
12090 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
12091 | i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr); | |
12092 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
12093 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
12094 | } | |
12095 | else { | |
12096 | PL_last_uni = SvPVX(PL_linestr); | |
12097 | PL_last_lop = SvPVX(PL_linestr); | |
12098 | PL_last_lop_op = 0; | |
12099 | } | |
1d7c1841 | 12100 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 12101 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
12102 | #ifdef FCRYPT |
12103 | PL_cryptseen = proto_perl->Icryptseen; | |
12104 | #endif | |
12105 | ||
12106 | PL_hints = proto_perl->Ihints; | |
12107 | ||
12108 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
12109 | ||
12110 | #ifdef USE_LOCALE_COLLATE | |
12111 | PL_collation_ix = proto_perl->Icollation_ix; | |
12112 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
12113 | PL_collation_standard = proto_perl->Icollation_standard; | |
12114 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
12115 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
12116 | #endif /* USE_LOCALE_COLLATE */ | |
12117 | ||
12118 | #ifdef USE_LOCALE_NUMERIC | |
12119 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
12120 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
12121 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 12122 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
12123 | #endif /* !USE_LOCALE_NUMERIC */ |
12124 | ||
12125 | /* utf8 character classes */ | |
d2d73c3e AB |
12126 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
12127 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
12128 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
12129 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
12130 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
12131 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
12132 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
12133 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
12134 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
12135 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
12136 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
12137 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
12138 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
12139 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
12140 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
12141 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
12142 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 12143 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
12144 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
12145 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 12146 | |
6c3182a5 | 12147 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 12148 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
12149 | /* Unicode features (see perlrun/-C) */ |
12150 | PL_unicode = proto_perl->Iunicode; | |
12151 | ||
12152 | /* Pre-5.8 signals control */ | |
12153 | PL_signals = proto_perl->Isignals; | |
12154 | ||
12155 | /* times() ticks per second */ | |
12156 | PL_clocktick = proto_perl->Iclocktick; | |
12157 | ||
12158 | /* Recursion stopper for PerlIO_find_layer */ | |
12159 | PL_in_load_module = proto_perl->Iin_load_module; | |
12160 | ||
12161 | /* sort() routine */ | |
12162 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
12163 | ||
57c6e6d2 JH |
12164 | /* Not really needed/useful since the reenrant_retint is "volatile", |
12165 | * but do it for consistency's sake. */ | |
12166 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
12167 | ||
15a5279a JH |
12168 | /* Hooks to shared SVs and locks. */ |
12169 | PL_sharehook = proto_perl->Isharehook; | |
12170 | PL_lockhook = proto_perl->Ilockhook; | |
12171 | PL_unlockhook = proto_perl->Iunlockhook; | |
12172 | PL_threadhook = proto_perl->Ithreadhook; | |
12173 | ||
bce260cd JH |
12174 | PL_runops_std = proto_perl->Irunops_std; |
12175 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
12176 | ||
12177 | #ifdef THREADS_HAVE_PIDS | |
12178 | PL_ppid = proto_perl->Ippid; | |
12179 | #endif | |
12180 | ||
1d7c1841 GS |
12181 | /* swatch cache */ |
12182 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
12183 | PL_last_swash_klen = 0; | |
12184 | PL_last_swash_key[0]= '\0'; | |
12185 | PL_last_swash_tmps = (U8*)NULL; | |
12186 | PL_last_swash_slen = 0; | |
12187 | ||
1d7c1841 GS |
12188 | PL_glob_index = proto_perl->Iglob_index; |
12189 | PL_srand_called = proto_perl->Isrand_called; | |
504f80c1 | 12190 | PL_hash_seed = proto_perl->Ihash_seed; |
008fb0c0 | 12191 | PL_rehash_seed = proto_perl->Irehash_seed; |
1d7c1841 GS |
12192 | PL_uudmap['M'] = 0; /* reinits on demand */ |
12193 | PL_bitcount = Nullch; /* reinits on demand */ | |
12194 | ||
66fe0623 NIS |
12195 | if (proto_perl->Ipsig_pend) { |
12196 | Newz(0, PL_psig_pend, SIG_SIZE, int); | |
9dd79c3f | 12197 | } |
66fe0623 NIS |
12198 | else { |
12199 | PL_psig_pend = (int*)NULL; | |
12200 | } | |
12201 | ||
1d7c1841 | 12202 | if (proto_perl->Ipsig_ptr) { |
76d3c696 JH |
12203 | Newz(0, PL_psig_ptr, SIG_SIZE, SV*); |
12204 | Newz(0, PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 12205 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
12206 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
12207 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
12208 | } |
12209 | } | |
12210 | else { | |
12211 | PL_psig_ptr = (SV**)NULL; | |
12212 | PL_psig_name = (SV**)NULL; | |
12213 | } | |
12214 | ||
12215 | /* thrdvar.h stuff */ | |
12216 | ||
a0739874 | 12217 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
12218 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
12219 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
12220 | PL_tmps_max = proto_perl->Ttmps_max; | |
12221 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
12222 | Newz(50, PL_tmps_stack, PL_tmps_max, SV*); | |
12223 | i = 0; | |
12224 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 12225 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
12226 | ++i; |
12227 | } | |
12228 | ||
12229 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
12230 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
12231 | Newz(54, PL_markstack, i, I32); | |
12232 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
12233 | - proto_perl->Tmarkstack); | |
12234 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
12235 | - proto_perl->Tmarkstack); | |
12236 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
12237 | PL_markstack_ptr - PL_markstack + 1, I32); | |
12238 | ||
12239 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
12240 | * NOTE: unlike the others! */ | |
12241 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
12242 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
12243 | Newz(54, PL_scopestack, PL_scopestack_max, I32); | |
12244 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
12245 | ||
1d7c1841 | 12246 | /* NOTE: si_dup() looks at PL_markstack */ |
d2d73c3e | 12247 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
12248 | |
12249 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
12250 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
12251 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
12252 | |
12253 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
12254 | PL_stack_base = AvARRAY(PL_curstack); | |
12255 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
12256 | - proto_perl->Tstack_base); | |
12257 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
12258 | ||
12259 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
12260 | * NOTE: unlike the others! */ | |
12261 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
12262 | PL_savestack_max = proto_perl->Tsavestack_max; | |
12263 | /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/ | |
d2d73c3e | 12264 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
12265 | } |
12266 | else { | |
12267 | init_stacks(); | |
985e7056 | 12268 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
12269 | } |
12270 | ||
12271 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
12272 | PL_top_env = &PL_start_env; | |
12273 | ||
12274 | PL_op = proto_perl->Top; | |
12275 | ||
12276 | PL_Sv = Nullsv; | |
12277 | PL_Xpv = (XPV*)NULL; | |
12278 | PL_na = proto_perl->Tna; | |
12279 | ||
12280 | PL_statbuf = proto_perl->Tstatbuf; | |
12281 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
12282 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
12283 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
12284 | #ifdef HAS_TIMES |
12285 | PL_timesbuf = proto_perl->Ttimesbuf; | |
12286 | #endif | |
12287 | ||
12288 | PL_tainted = proto_perl->Ttainted; | |
12289 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
12290 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
12291 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
12292 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
12293 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 12294 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
12295 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
12296 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
12297 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
12298 | |
12299 | PL_restartop = proto_perl->Trestartop; | |
12300 | PL_in_eval = proto_perl->Tin_eval; | |
12301 | PL_delaymagic = proto_perl->Tdelaymagic; | |
12302 | PL_dirty = proto_perl->Tdirty; | |
12303 | PL_localizing = proto_perl->Tlocalizing; | |
12304 | ||
d2d73c3e | 12305 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
dd28f7bb | 12306 | PL_hv_fetch_ent_mh = Nullhe; |
1d7c1841 GS |
12307 | PL_modcount = proto_perl->Tmodcount; |
12308 | PL_lastgotoprobe = Nullop; | |
12309 | PL_dumpindent = proto_perl->Tdumpindent; | |
12310 | ||
12311 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
12312 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
12313 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
12314 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
12315 | PL_sortcxix = proto_perl->Tsortcxix; |
12316 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
12317 | PL_efloatsize = 0; /* reinits on demand */ | |
12318 | ||
12319 | /* regex stuff */ | |
12320 | ||
12321 | PL_screamfirst = NULL; | |
12322 | PL_screamnext = NULL; | |
12323 | PL_maxscream = -1; /* reinits on demand */ | |
12324 | PL_lastscream = Nullsv; | |
12325 | ||
12326 | PL_watchaddr = NULL; | |
12327 | PL_watchok = Nullch; | |
12328 | ||
12329 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
12330 | PL_regprecomp = Nullch; |
12331 | PL_regnpar = 0; | |
12332 | PL_regsize = 0; | |
1d7c1841 GS |
12333 | PL_colorset = 0; /* reinits PL_colors[] */ |
12334 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
12335 | PL_reginput = Nullch; |
12336 | PL_regbol = Nullch; | |
12337 | PL_regeol = Nullch; | |
12338 | PL_regstartp = (I32*)NULL; | |
12339 | PL_regendp = (I32*)NULL; | |
12340 | PL_reglastparen = (U32*)NULL; | |
2d862feb | 12341 | PL_reglastcloseparen = (U32*)NULL; |
1d7c1841 | 12342 | PL_regtill = Nullch; |
1d7c1841 GS |
12343 | PL_reg_start_tmp = (char**)NULL; |
12344 | PL_reg_start_tmpl = 0; | |
12345 | PL_regdata = (struct reg_data*)NULL; | |
12346 | PL_bostr = Nullch; | |
12347 | PL_reg_flags = 0; | |
12348 | PL_reg_eval_set = 0; | |
12349 | PL_regnarrate = 0; | |
12350 | PL_regprogram = (regnode*)NULL; | |
12351 | PL_regindent = 0; | |
12352 | PL_regcc = (CURCUR*)NULL; | |
12353 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
12354 | PL_reg_re = (regexp*)NULL; | |
12355 | PL_reg_ganch = Nullch; | |
12356 | PL_reg_sv = Nullsv; | |
53c4c00c | 12357 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
12358 | PL_reg_magic = (MAGIC*)NULL; |
12359 | PL_reg_oldpos = 0; | |
12360 | PL_reg_oldcurpm = (PMOP*)NULL; | |
12361 | PL_reg_curpm = (PMOP*)NULL; | |
12362 | PL_reg_oldsaved = Nullch; | |
12363 | PL_reg_oldsavedlen = 0; | |
ed252734 | 12364 | #ifdef PERL_COPY_ON_WRITE |
504cff3b | 12365 | PL_nrs = Nullsv; |
ed252734 | 12366 | #endif |
1d7c1841 GS |
12367 | PL_reg_maxiter = 0; |
12368 | PL_reg_leftiter = 0; | |
12369 | PL_reg_poscache = Nullch; | |
12370 | PL_reg_poscache_size= 0; | |
12371 | ||
12372 | /* RE engine - function pointers */ | |
12373 | PL_regcompp = proto_perl->Tregcompp; | |
12374 | PL_regexecp = proto_perl->Tregexecp; | |
12375 | PL_regint_start = proto_perl->Tregint_start; | |
12376 | PL_regint_string = proto_perl->Tregint_string; | |
12377 | PL_regfree = proto_perl->Tregfree; | |
12378 | ||
12379 | PL_reginterp_cnt = 0; | |
12380 | PL_reg_starttry = 0; | |
12381 | ||
a2efc822 SC |
12382 | /* Pluggable optimizer */ |
12383 | PL_peepp = proto_perl->Tpeepp; | |
12384 | ||
081fc587 AB |
12385 | PL_stashcache = newHV(); |
12386 | ||
a0739874 DM |
12387 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
12388 | ptr_table_free(PL_ptr_table); | |
12389 | PL_ptr_table = NULL; | |
12390 | } | |
8cf8f3d1 | 12391 | |
f284b03f AMS |
12392 | /* Call the ->CLONE method, if it exists, for each of the stashes |
12393 | identified by sv_dup() above. | |
12394 | */ | |
d2d73c3e AB |
12395 | while(av_len(param->stashes) != -1) { |
12396 | HV* stash = (HV*) av_shift(param->stashes); | |
f284b03f AMS |
12397 | GV* cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); |
12398 | if (cloner && GvCV(cloner)) { | |
12399 | dSP; | |
12400 | ENTER; | |
12401 | SAVETMPS; | |
12402 | PUSHMARK(SP); | |
9660f481 | 12403 | XPUSHs(sv_2mortal(newSVpv(HvNAME(stash), 0))); |
f284b03f AMS |
12404 | PUTBACK; |
12405 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
12406 | FREETMPS; | |
12407 | LEAVE; | |
12408 | } | |
4a09accc | 12409 | } |
a0739874 | 12410 | |
dc507217 | 12411 | SvREFCNT_dec(param->stashes); |
dc507217 | 12412 | |
6d26897e DM |
12413 | /* orphaned? eg threads->new inside BEGIN or use */ |
12414 | if (PL_compcv && ! SvREFCNT(PL_compcv)) { | |
a3b680e6 | 12415 | (void)SvREFCNT_inc(PL_compcv); |
6d26897e DM |
12416 | SAVEFREESV(PL_compcv); |
12417 | } | |
12418 | ||
1d7c1841 | 12419 | return my_perl; |
1d7c1841 GS |
12420 | } |
12421 | ||
1d7c1841 | 12422 | #endif /* USE_ITHREADS */ |
a0ae6670 | 12423 | |
9f4817db | 12424 | /* |
ccfc67b7 JH |
12425 | =head1 Unicode Support |
12426 | ||
9f4817db JH |
12427 | =for apidoc sv_recode_to_utf8 |
12428 | ||
5d170f3a JH |
12429 | The encoding is assumed to be an Encode object, on entry the PV |
12430 | of the sv is assumed to be octets in that encoding, and the sv | |
12431 | will be converted into Unicode (and UTF-8). | |
9f4817db | 12432 | |
5d170f3a JH |
12433 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
12434 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
12435 | an C<Encode::XS> Encoding object, bad things will happen. |
12436 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 12437 | |
5d170f3a | 12438 | The PV of the sv is returned. |
9f4817db | 12439 | |
5d170f3a JH |
12440 | =cut */ |
12441 | ||
12442 | char * | |
12443 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
12444 | { | |
27da23d5 | 12445 | dVAR; |
220e2d4e | 12446 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
12447 | SV *uni; |
12448 | STRLEN len; | |
12449 | char *s; | |
12450 | dSP; | |
12451 | ENTER; | |
12452 | SAVETMPS; | |
220e2d4e | 12453 | save_re_context(); |
d0063567 DK |
12454 | PUSHMARK(sp); |
12455 | EXTEND(SP, 3); | |
12456 | XPUSHs(encoding); | |
12457 | XPUSHs(sv); | |
7a5fa8a2 | 12458 | /* |
f9893866 NIS |
12459 | NI-S 2002/07/09 |
12460 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
7a5fa8a2 | 12461 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means |
f9893866 NIS |
12462 | remove converted chars from source. |
12463 | ||
12464 | Both will default the value - let them. | |
7a5fa8a2 | 12465 | |
d0063567 | 12466 | XPUSHs(&PL_sv_yes); |
f9893866 | 12467 | */ |
d0063567 DK |
12468 | PUTBACK; |
12469 | call_method("decode", G_SCALAR); | |
12470 | SPAGAIN; | |
12471 | uni = POPs; | |
12472 | PUTBACK; | |
12473 | s = SvPV(uni, len); | |
d0063567 DK |
12474 | if (s != SvPVX(sv)) { |
12475 | SvGROW(sv, len + 1); | |
12476 | Move(s, SvPVX(sv), len, char); | |
12477 | SvCUR_set(sv, len); | |
12478 | SvPVX(sv)[len] = 0; | |
12479 | } | |
12480 | FREETMPS; | |
12481 | LEAVE; | |
d0063567 | 12482 | SvUTF8_on(sv); |
95899a2a | 12483 | return SvPVX(sv); |
f9893866 | 12484 | } |
95899a2a | 12485 | return SvPOKp(sv) ? SvPVX(sv) : NULL; |
9f4817db JH |
12486 | } |
12487 | ||
220e2d4e IH |
12488 | /* |
12489 | =for apidoc sv_cat_decode | |
12490 | ||
12491 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
12492 | assumed to be octets in that encoding and decoding the input starts | |
12493 | from the position which (PV + *offset) pointed to. The dsv will be | |
12494 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
12495 | when the string tstr appears in decoding output or the input ends on | |
12496 | the PV of the ssv. The value which the offset points will be modified | |
12497 | to the last input position on the ssv. | |
68795e93 | 12498 | |
220e2d4e IH |
12499 | Returns TRUE if the terminator was found, else returns FALSE. |
12500 | ||
12501 | =cut */ | |
12502 | ||
12503 | bool | |
12504 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
12505 | SV *ssv, int *offset, char *tstr, int tlen) | |
12506 | { | |
27da23d5 | 12507 | dVAR; |
a73e8557 | 12508 | bool ret = FALSE; |
220e2d4e | 12509 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
12510 | SV *offsv; |
12511 | dSP; | |
12512 | ENTER; | |
12513 | SAVETMPS; | |
12514 | save_re_context(); | |
12515 | PUSHMARK(sp); | |
12516 | EXTEND(SP, 6); | |
12517 | XPUSHs(encoding); | |
12518 | XPUSHs(dsv); | |
12519 | XPUSHs(ssv); | |
12520 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
12521 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
12522 | PUTBACK; | |
12523 | call_method("cat_decode", G_SCALAR); | |
12524 | SPAGAIN; | |
12525 | ret = SvTRUE(TOPs); | |
12526 | *offset = SvIV(offsv); | |
12527 | PUTBACK; | |
12528 | FREETMPS; | |
12529 | LEAVE; | |
220e2d4e | 12530 | } |
a73e8557 JH |
12531 | else |
12532 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
12533 | return ret; | |
220e2d4e | 12534 | } |
f9893866 | 12535 | |
241d1a3b NC |
12536 | /* |
12537 | * Local variables: | |
12538 | * c-indentation-style: bsd | |
12539 | * c-basic-offset: 4 | |
12540 | * indent-tabs-mode: t | |
12541 | * End: | |
12542 | * | |
37442d52 RGS |
12543 | * ex: set ts=8 sts=4 sw=4 noet: |
12544 | */ |