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; | |
7b2c381c | 526 | void *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)) | |
1df70142 | 537 | Safefree(sva); |
4633a7c4 | 538 | } |
5f05dabc | 539 | |
612f20c3 | 540 | for (arena = PL_xnv_arenaroot; arena; arena = arenanext) { |
7b2c381c | 541 | arenanext = *(void **)arena; |
612f20c3 GS |
542 | Safefree(arena); |
543 | } | |
544 | PL_xnv_arenaroot = 0; | |
bf9cdc68 | 545 | PL_xnv_root = 0; |
612f20c3 | 546 | |
612f20c3 | 547 | for (arena = PL_xpv_arenaroot; arena; arena = arenanext) { |
7b2c381c | 548 | arenanext = *(void **)arena; |
612f20c3 GS |
549 | Safefree(arena); |
550 | } | |
551 | PL_xpv_arenaroot = 0; | |
bf9cdc68 | 552 | PL_xpv_root = 0; |
612f20c3 | 553 | |
7b2c381c NC |
554 | for (arena = PL_xpviv_arenaroot; arena; arena = arenanext) { |
555 | arenanext = *(void **)arena; | |
612f20c3 GS |
556 | Safefree(arena); |
557 | } | |
558 | PL_xpviv_arenaroot = 0; | |
bf9cdc68 | 559 | PL_xpviv_root = 0; |
612f20c3 | 560 | |
7b2c381c NC |
561 | for (arena = PL_xpvnv_arenaroot; arena; arena = arenanext) { |
562 | arenanext = *(void **)arena; | |
612f20c3 GS |
563 | Safefree(arena); |
564 | } | |
565 | PL_xpvnv_arenaroot = 0; | |
bf9cdc68 | 566 | PL_xpvnv_root = 0; |
612f20c3 | 567 | |
7b2c381c NC |
568 | for (arena = PL_xpvcv_arenaroot; arena; arena = arenanext) { |
569 | arenanext = *(void **)arena; | |
612f20c3 GS |
570 | Safefree(arena); |
571 | } | |
572 | PL_xpvcv_arenaroot = 0; | |
bf9cdc68 | 573 | PL_xpvcv_root = 0; |
612f20c3 | 574 | |
7b2c381c NC |
575 | for (arena = PL_xpvav_arenaroot; arena; arena = arenanext) { |
576 | arenanext = *(void **)arena; | |
612f20c3 GS |
577 | Safefree(arena); |
578 | } | |
579 | PL_xpvav_arenaroot = 0; | |
bf9cdc68 | 580 | PL_xpvav_root = 0; |
612f20c3 | 581 | |
7b2c381c NC |
582 | for (arena = PL_xpvhv_arenaroot; arena; arena = arenanext) { |
583 | arenanext = *(void **)arena; | |
612f20c3 GS |
584 | Safefree(arena); |
585 | } | |
586 | PL_xpvhv_arenaroot = 0; | |
bf9cdc68 | 587 | PL_xpvhv_root = 0; |
612f20c3 | 588 | |
7b2c381c NC |
589 | for (arena = PL_xpvmg_arenaroot; arena; arena = arenanext) { |
590 | arenanext = *(void **)arena; | |
612f20c3 GS |
591 | Safefree(arena); |
592 | } | |
593 | PL_xpvmg_arenaroot = 0; | |
bf9cdc68 | 594 | PL_xpvmg_root = 0; |
612f20c3 | 595 | |
7b2c381c NC |
596 | for (arena = PL_xpvgv_arenaroot; arena; arena = arenanext) { |
597 | arenanext = *(void **)arena; | |
727879eb NC |
598 | Safefree(arena); |
599 | } | |
600 | PL_xpvgv_arenaroot = 0; | |
601 | PL_xpvgv_root = 0; | |
602 | ||
7b2c381c NC |
603 | for (arena = PL_xpvlv_arenaroot; arena; arena = arenanext) { |
604 | arenanext = *(void **)arena; | |
612f20c3 GS |
605 | Safefree(arena); |
606 | } | |
607 | PL_xpvlv_arenaroot = 0; | |
bf9cdc68 | 608 | PL_xpvlv_root = 0; |
612f20c3 | 609 | |
7b2c381c NC |
610 | for (arena = PL_xpvbm_arenaroot; arena; arena = arenanext) { |
611 | arenanext = *(void **)arena; | |
612f20c3 GS |
612 | Safefree(arena); |
613 | } | |
614 | PL_xpvbm_arenaroot = 0; | |
bf9cdc68 | 615 | PL_xpvbm_root = 0; |
612f20c3 | 616 | |
b1135e3d NC |
617 | { |
618 | HE *he; | |
619 | HE *he_next; | |
620 | for (he = PL_he_arenaroot; he; he = he_next) { | |
621 | he_next = HeNEXT(he); | |
622 | Safefree(he); | |
623 | } | |
612f20c3 GS |
624 | } |
625 | PL_he_arenaroot = 0; | |
bf9cdc68 | 626 | PL_he_root = 0; |
612f20c3 | 627 | |
892b45be | 628 | #if defined(USE_ITHREADS) |
b1135e3d NC |
629 | { |
630 | struct ptr_tbl_ent *pte; | |
631 | struct ptr_tbl_ent *pte_next; | |
632 | for (pte = PL_pte_arenaroot; pte; pte = pte_next) { | |
633 | pte_next = pte->next; | |
634 | Safefree(pte); | |
635 | } | |
32e691d0 NC |
636 | } |
637 | PL_pte_arenaroot = 0; | |
638 | PL_pte_root = 0; | |
892b45be | 639 | #endif |
32e691d0 | 640 | |
3280af22 NIS |
641 | if (PL_nice_chunk) |
642 | Safefree(PL_nice_chunk); | |
643 | PL_nice_chunk = Nullch; | |
644 | PL_nice_chunk_size = 0; | |
645 | PL_sv_arenaroot = 0; | |
646 | PL_sv_root = 0; | |
4633a7c4 LW |
647 | } |
648 | ||
29489e7c DM |
649 | /* --------------------------------------------------------------------- |
650 | * | |
651 | * support functions for report_uninit() | |
652 | */ | |
653 | ||
654 | /* the maxiumum size of array or hash where we will scan looking | |
655 | * for the undefined element that triggered the warning */ | |
656 | ||
657 | #define FUV_MAX_SEARCH_SIZE 1000 | |
658 | ||
659 | /* Look for an entry in the hash whose value has the same SV as val; | |
660 | * If so, return a mortal copy of the key. */ | |
661 | ||
662 | STATIC SV* | |
663 | S_find_hash_subscript(pTHX_ HV *hv, SV* val) | |
664 | { | |
27da23d5 | 665 | dVAR; |
29489e7c | 666 | register HE **array; |
29489e7c DM |
667 | I32 i; |
668 | ||
669 | if (!hv || SvMAGICAL(hv) || !HvARRAY(hv) || | |
670 | (HvTOTALKEYS(hv) > FUV_MAX_SEARCH_SIZE)) | |
671 | return Nullsv; | |
672 | ||
673 | array = HvARRAY(hv); | |
674 | ||
675 | for (i=HvMAX(hv); i>0; i--) { | |
f54cb97a | 676 | register HE *entry; |
29489e7c DM |
677 | for (entry = array[i]; entry; entry = HeNEXT(entry)) { |
678 | if (HeVAL(entry) != val) | |
679 | continue; | |
680 | if ( HeVAL(entry) == &PL_sv_undef || | |
681 | HeVAL(entry) == &PL_sv_placeholder) | |
682 | continue; | |
683 | if (!HeKEY(entry)) | |
684 | return Nullsv; | |
685 | if (HeKLEN(entry) == HEf_SVKEY) | |
686 | return sv_mortalcopy(HeKEY_sv(entry)); | |
687 | return sv_2mortal(newSVpvn(HeKEY(entry), HeKLEN(entry))); | |
688 | } | |
689 | } | |
690 | return Nullsv; | |
691 | } | |
692 | ||
693 | /* Look for an entry in the array whose value has the same SV as val; | |
694 | * If so, return the index, otherwise return -1. */ | |
695 | ||
696 | STATIC I32 | |
697 | S_find_array_subscript(pTHX_ AV *av, SV* val) | |
698 | { | |
699 | SV** svp; | |
700 | I32 i; | |
701 | if (!av || SvMAGICAL(av) || !AvARRAY(av) || | |
702 | (AvFILLp(av) > FUV_MAX_SEARCH_SIZE)) | |
703 | return -1; | |
704 | ||
705 | svp = AvARRAY(av); | |
706 | for (i=AvFILLp(av); i>=0; i--) { | |
707 | if (svp[i] == val && svp[i] != &PL_sv_undef) | |
708 | return i; | |
709 | } | |
710 | return -1; | |
711 | } | |
712 | ||
713 | /* S_varname(): return the name of a variable, optionally with a subscript. | |
714 | * If gv is non-zero, use the name of that global, along with gvtype (one | |
715 | * of "$", "@", "%"); otherwise use the name of the lexical at pad offset | |
716 | * targ. Depending on the value of the subscript_type flag, return: | |
717 | */ | |
718 | ||
719 | #define FUV_SUBSCRIPT_NONE 1 /* "@foo" */ | |
720 | #define FUV_SUBSCRIPT_ARRAY 2 /* "$foo[aindex]" */ | |
721 | #define FUV_SUBSCRIPT_HASH 3 /* "$foo{keyname}" */ | |
722 | #define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */ | |
723 | ||
724 | STATIC SV* | |
bfed75c6 | 725 | S_varname(pTHX_ GV *gv, const char *gvtype, PADOFFSET targ, |
29489e7c DM |
726 | SV* keyname, I32 aindex, int subscript_type) |
727 | { | |
728 | AV *av; | |
a3b680e6 | 729 | SV *sv; |
29489e7c | 730 | |
a3b680e6 | 731 | SV * const name = sv_newmortal(); |
29489e7c DM |
732 | if (gv) { |
733 | ||
734 | /* simulate gv_fullname4(), but add literal '^' for $^FOO names | |
735 | * XXX get rid of all this if gv_fullnameX() ever supports this | |
736 | * directly */ | |
737 | ||
bfed75c6 | 738 | const char *p; |
29489e7c DM |
739 | HV *hv = GvSTASH(gv); |
740 | sv_setpv(name, gvtype); | |
741 | if (!hv) | |
742 | p = "???"; | |
bfcb3514 | 743 | else if (!(p=HvNAME_get(hv))) |
29489e7c | 744 | p = "__ANON__"; |
29489e7c DM |
745 | if (strNE(p, "main")) { |
746 | sv_catpv(name,p); | |
747 | sv_catpvn(name,"::", 2); | |
748 | } | |
749 | if (GvNAMELEN(gv)>= 1 && | |
750 | ((unsigned int)*GvNAME(gv)) <= 26) | |
751 | { /* handle $^FOO */ | |
752 | Perl_sv_catpvf(aTHX_ name,"^%c", *GvNAME(gv) + 'A' - 1); | |
753 | sv_catpvn(name,GvNAME(gv)+1,GvNAMELEN(gv)-1); | |
754 | } | |
755 | else | |
756 | sv_catpvn(name,GvNAME(gv),GvNAMELEN(gv)); | |
757 | } | |
758 | else { | |
759 | U32 u; | |
760 | CV *cv = find_runcv(&u); | |
761 | if (!cv || !CvPADLIST(cv)) | |
762 | return Nullsv;; | |
763 | av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE)); | |
764 | sv = *av_fetch(av, targ, FALSE); | |
765 | /* SvLEN in a pad name is not to be trusted */ | |
766 | sv_setpv(name, SvPV_nolen(sv)); | |
767 | } | |
768 | ||
769 | if (subscript_type == FUV_SUBSCRIPT_HASH) { | |
770 | *SvPVX(name) = '$'; | |
771 | sv = NEWSV(0,0); | |
772 | Perl_sv_catpvf(aTHX_ name, "{%s}", | |
773 | pv_display(sv,SvPVX(keyname), SvCUR(keyname), 0, 32)); | |
774 | SvREFCNT_dec(sv); | |
775 | } | |
776 | else if (subscript_type == FUV_SUBSCRIPT_ARRAY) { | |
777 | *SvPVX(name) = '$'; | |
265a12b8 | 778 | Perl_sv_catpvf(aTHX_ name, "[%"IVdf"]", (IV)aindex); |
29489e7c DM |
779 | } |
780 | else if (subscript_type == FUV_SUBSCRIPT_WITHIN) | |
781 | sv_insert(name, 0, 0, "within ", 7); | |
782 | ||
783 | return name; | |
784 | } | |
785 | ||
786 | ||
787 | /* | |
788 | =for apidoc find_uninit_var | |
789 | ||
790 | Find the name of the undefined variable (if any) that caused the operator o | |
791 | to issue a "Use of uninitialized value" warning. | |
792 | If match is true, only return a name if it's value matches uninit_sv. | |
793 | So roughly speaking, if a unary operator (such as OP_COS) generates a | |
794 | warning, then following the direct child of the op may yield an | |
795 | OP_PADSV or OP_GV that gives the name of the undefined variable. On the | |
796 | other hand, with OP_ADD there are two branches to follow, so we only print | |
797 | the variable name if we get an exact match. | |
798 | ||
799 | The name is returned as a mortal SV. | |
800 | ||
801 | Assumes that PL_op is the op that originally triggered the error, and that | |
802 | PL_comppad/PL_curpad points to the currently executing pad. | |
803 | ||
804 | =cut | |
805 | */ | |
806 | ||
807 | STATIC SV * | |
808 | S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match) | |
809 | { | |
27da23d5 | 810 | dVAR; |
29489e7c DM |
811 | SV *sv; |
812 | AV *av; | |
813 | SV **svp; | |
814 | GV *gv; | |
815 | OP *o, *o2, *kid; | |
816 | ||
817 | if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef || | |
818 | uninit_sv == &PL_sv_placeholder))) | |
819 | return Nullsv; | |
820 | ||
821 | switch (obase->op_type) { | |
822 | ||
823 | case OP_RV2AV: | |
824 | case OP_RV2HV: | |
825 | case OP_PADAV: | |
826 | case OP_PADHV: | |
827 | { | |
f54cb97a AL |
828 | const bool pad = (obase->op_type == OP_PADAV || obase->op_type == OP_PADHV); |
829 | const bool hash = (obase->op_type == OP_PADHV || obase->op_type == OP_RV2HV); | |
112dcc46 RGS |
830 | I32 index = 0; |
831 | SV *keysv = Nullsv; | |
29489e7c DM |
832 | int subscript_type = FUV_SUBSCRIPT_WITHIN; |
833 | ||
834 | if (pad) { /* @lex, %lex */ | |
835 | sv = PAD_SVl(obase->op_targ); | |
836 | gv = Nullgv; | |
837 | } | |
838 | else { | |
839 | if (cUNOPx(obase)->op_first->op_type == OP_GV) { | |
840 | /* @global, %global */ | |
841 | gv = cGVOPx_gv(cUNOPx(obase)->op_first); | |
842 | if (!gv) | |
843 | break; | |
844 | sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv); | |
845 | } | |
846 | else /* @{expr}, %{expr} */ | |
847 | return find_uninit_var(cUNOPx(obase)->op_first, | |
848 | uninit_sv, match); | |
849 | } | |
850 | ||
851 | /* attempt to find a match within the aggregate */ | |
852 | if (hash) { | |
853 | keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
854 | if (keysv) | |
855 | subscript_type = FUV_SUBSCRIPT_HASH; | |
856 | } | |
857 | else { | |
858 | index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
859 | if (index >= 0) | |
860 | subscript_type = FUV_SUBSCRIPT_ARRAY; | |
861 | } | |
862 | ||
863 | if (match && subscript_type == FUV_SUBSCRIPT_WITHIN) | |
864 | break; | |
865 | ||
866 | return S_varname(aTHX_ gv, hash ? "%" : "@", obase->op_targ, | |
867 | keysv, index, subscript_type); | |
868 | } | |
869 | ||
870 | case OP_PADSV: | |
871 | if (match && PAD_SVl(obase->op_targ) != uninit_sv) | |
872 | break; | |
873 | return S_varname(aTHX_ Nullgv, "$", obase->op_targ, | |
874 | Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
875 | ||
876 | case OP_GVSV: | |
877 | gv = cGVOPx_gv(obase); | |
878 | if (!gv || (match && GvSV(gv) != uninit_sv)) | |
879 | break; | |
880 | return S_varname(aTHX_ gv, "$", 0, Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
881 | ||
882 | case OP_AELEMFAST: | |
883 | if (obase->op_flags & OPf_SPECIAL) { /* lexical array */ | |
884 | if (match) { | |
885 | av = (AV*)PAD_SV(obase->op_targ); | |
886 | if (!av || SvRMAGICAL(av)) | |
887 | break; | |
888 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
889 | if (!svp || *svp != uninit_sv) | |
890 | break; | |
891 | } | |
892 | return S_varname(aTHX_ Nullgv, "$", obase->op_targ, | |
893 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
894 | } | |
895 | else { | |
896 | gv = cGVOPx_gv(obase); | |
897 | if (!gv) | |
898 | break; | |
899 | if (match) { | |
900 | av = GvAV(gv); | |
901 | if (!av || SvRMAGICAL(av)) | |
902 | break; | |
903 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
904 | if (!svp || *svp != uninit_sv) | |
905 | break; | |
906 | } | |
907 | return S_varname(aTHX_ gv, "$", 0, | |
908 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
909 | } | |
910 | break; | |
911 | ||
912 | case OP_EXISTS: | |
913 | o = cUNOPx(obase)->op_first; | |
914 | if (!o || o->op_type != OP_NULL || | |
915 | ! (o->op_targ == OP_AELEM || o->op_targ == OP_HELEM)) | |
916 | break; | |
917 | return find_uninit_var(cBINOPo->op_last, uninit_sv, match); | |
918 | ||
919 | case OP_AELEM: | |
920 | case OP_HELEM: | |
921 | if (PL_op == obase) | |
922 | /* $a[uninit_expr] or $h{uninit_expr} */ | |
923 | return find_uninit_var(cBINOPx(obase)->op_last, uninit_sv, match); | |
924 | ||
925 | gv = Nullgv; | |
926 | o = cBINOPx(obase)->op_first; | |
927 | kid = cBINOPx(obase)->op_last; | |
928 | ||
929 | /* get the av or hv, and optionally the gv */ | |
930 | sv = Nullsv; | |
931 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) { | |
932 | sv = PAD_SV(o->op_targ); | |
933 | } | |
934 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_RV2HV) | |
935 | && cUNOPo->op_first->op_type == OP_GV) | |
936 | { | |
937 | gv = cGVOPx_gv(cUNOPo->op_first); | |
938 | if (!gv) | |
939 | break; | |
940 | sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv); | |
941 | } | |
942 | if (!sv) | |
943 | break; | |
944 | ||
945 | if (kid && kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) { | |
946 | /* index is constant */ | |
947 | if (match) { | |
948 | if (SvMAGICAL(sv)) | |
949 | break; | |
950 | if (obase->op_type == OP_HELEM) { | |
951 | HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0); | |
952 | if (!he || HeVAL(he) != uninit_sv) | |
953 | break; | |
954 | } | |
955 | else { | |
956 | svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE); | |
957 | if (!svp || *svp != uninit_sv) | |
958 | break; | |
959 | } | |
960 | } | |
961 | if (obase->op_type == OP_HELEM) | |
962 | return S_varname(aTHX_ gv, "%", o->op_targ, | |
963 | cSVOPx_sv(kid), 0, FUV_SUBSCRIPT_HASH); | |
964 | else | |
965 | return S_varname(aTHX_ gv, "@", o->op_targ, Nullsv, | |
966 | SvIV(cSVOPx_sv(kid)), FUV_SUBSCRIPT_ARRAY); | |
967 | ; | |
968 | } | |
969 | else { | |
970 | /* index is an expression; | |
971 | * attempt to find a match within the aggregate */ | |
972 | if (obase->op_type == OP_HELEM) { | |
973 | SV *keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
974 | if (keysv) | |
975 | return S_varname(aTHX_ gv, "%", o->op_targ, | |
976 | keysv, 0, FUV_SUBSCRIPT_HASH); | |
977 | } | |
978 | else { | |
f54cb97a | 979 | const I32 index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); |
29489e7c | 980 | if (index >= 0) |
f54cb97a | 981 | return S_varname(aTHX_ gv, "@", o->op_targ, |
29489e7c DM |
982 | Nullsv, index, FUV_SUBSCRIPT_ARRAY); |
983 | } | |
984 | if (match) | |
985 | break; | |
986 | return S_varname(aTHX_ gv, | |
987 | (o->op_type == OP_PADAV || o->op_type == OP_RV2AV) | |
988 | ? "@" : "%", | |
989 | o->op_targ, Nullsv, 0, FUV_SUBSCRIPT_WITHIN); | |
990 | } | |
991 | ||
992 | break; | |
993 | ||
994 | case OP_AASSIGN: | |
995 | /* only examine RHS */ | |
996 | return find_uninit_var(cBINOPx(obase)->op_first, uninit_sv, match); | |
997 | ||
998 | case OP_OPEN: | |
999 | o = cUNOPx(obase)->op_first; | |
1000 | if (o->op_type == OP_PUSHMARK) | |
1001 | o = o->op_sibling; | |
1002 | ||
1003 | if (!o->op_sibling) { | |
1004 | /* one-arg version of open is highly magical */ | |
1005 | ||
1006 | if (o->op_type == OP_GV) { /* open FOO; */ | |
1007 | gv = cGVOPx_gv(o); | |
1008 | if (match && GvSV(gv) != uninit_sv) | |
1009 | break; | |
7a5fa8a2 | 1010 | return S_varname(aTHX_ gv, "$", 0, |
29489e7c DM |
1011 | Nullsv, 0, FUV_SUBSCRIPT_NONE); |
1012 | } | |
1013 | /* other possibilities not handled are: | |
1014 | * open $x; or open my $x; should return '${*$x}' | |
1015 | * open expr; should return '$'.expr ideally | |
1016 | */ | |
1017 | break; | |
1018 | } | |
1019 | goto do_op; | |
1020 | ||
1021 | /* ops where $_ may be an implicit arg */ | |
1022 | case OP_TRANS: | |
1023 | case OP_SUBST: | |
1024 | case OP_MATCH: | |
1025 | if ( !(obase->op_flags & OPf_STACKED)) { | |
1026 | if (uninit_sv == ((obase->op_private & OPpTARGET_MY) | |
1027 | ? PAD_SVl(obase->op_targ) | |
1028 | : DEFSV)) | |
1029 | { | |
1030 | sv = sv_newmortal(); | |
1031 | sv_setpv(sv, "$_"); | |
1032 | return sv; | |
1033 | } | |
1034 | } | |
1035 | goto do_op; | |
1036 | ||
1037 | case OP_PRTF: | |
1038 | case OP_PRINT: | |
1039 | /* skip filehandle as it can't produce 'undef' warning */ | |
1040 | o = cUNOPx(obase)->op_first; | |
1041 | if ((obase->op_flags & OPf_STACKED) && o->op_type == OP_PUSHMARK) | |
1042 | o = o->op_sibling->op_sibling; | |
1043 | goto do_op2; | |
1044 | ||
1045 | ||
e21bd382 | 1046 | case OP_RV2SV: |
29489e7c DM |
1047 | case OP_CUSTOM: |
1048 | case OP_ENTERSUB: | |
1049 | match = 1; /* XS or custom code could trigger random warnings */ | |
1050 | goto do_op; | |
1051 | ||
1052 | case OP_SCHOMP: | |
1053 | case OP_CHOMP: | |
1054 | if (SvROK(PL_rs) && uninit_sv == SvRV(PL_rs)) | |
1055 | return sv_2mortal(newSVpv("${$/}", 0)); | |
1056 | /* FALL THROUGH */ | |
1057 | ||
1058 | default: | |
1059 | do_op: | |
1060 | if (!(obase->op_flags & OPf_KIDS)) | |
1061 | break; | |
1062 | o = cUNOPx(obase)->op_first; | |
1063 | ||
1064 | do_op2: | |
1065 | if (!o) | |
1066 | break; | |
1067 | ||
1068 | /* if all except one arg are constant, or have no side-effects, | |
1069 | * or are optimized away, then it's unambiguous */ | |
1070 | o2 = Nullop; | |
1071 | for (kid=o; kid; kid = kid->op_sibling) { | |
1072 | if (kid && | |
1073 | ( (kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) | |
1074 | || (kid->op_type == OP_NULL && ! (kid->op_flags & OPf_KIDS)) | |
1075 | || (kid->op_type == OP_PUSHMARK) | |
1076 | ) | |
1077 | ) | |
1078 | continue; | |
1079 | if (o2) { /* more than one found */ | |
1080 | o2 = Nullop; | |
1081 | break; | |
1082 | } | |
1083 | o2 = kid; | |
1084 | } | |
1085 | if (o2) | |
1086 | return find_uninit_var(o2, uninit_sv, match); | |
1087 | ||
1088 | /* scan all args */ | |
1089 | while (o) { | |
1090 | sv = find_uninit_var(o, uninit_sv, 1); | |
1091 | if (sv) | |
1092 | return sv; | |
1093 | o = o->op_sibling; | |
1094 | } | |
1095 | break; | |
1096 | } | |
1097 | return Nullsv; | |
1098 | } | |
1099 | ||
1100 | ||
645c22ef DM |
1101 | /* |
1102 | =for apidoc report_uninit | |
1103 | ||
1104 | Print appropriate "Use of uninitialized variable" warning | |
1105 | ||
1106 | =cut | |
1107 | */ | |
1108 | ||
1d7c1841 | 1109 | void |
29489e7c DM |
1110 | Perl_report_uninit(pTHX_ SV* uninit_sv) |
1111 | { | |
1112 | if (PL_op) { | |
112dcc46 | 1113 | SV* varname = Nullsv; |
29489e7c DM |
1114 | if (uninit_sv) { |
1115 | varname = find_uninit_var(PL_op, uninit_sv,0); | |
1116 | if (varname) | |
1117 | sv_insert(varname, 0, 0, " ", 1); | |
1118 | } | |
9014280d | 1119 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
29489e7c DM |
1120 | varname ? SvPV_nolen(varname) : "", |
1121 | " in ", OP_DESC(PL_op)); | |
1122 | } | |
1d7c1841 | 1123 | else |
29489e7c DM |
1124 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
1125 | "", "", ""); | |
1d7c1841 GS |
1126 | } |
1127 | ||
645c22ef DM |
1128 | /* allocate another arena's worth of NV bodies */ |
1129 | ||
cbe51380 | 1130 | STATIC void |
cea2e8a9 | 1131 | S_more_xnv(pTHX) |
463ee0b2 | 1132 | { |
cac9b346 NC |
1133 | NV* xnv; |
1134 | NV* xnvend; | |
7b2c381c NC |
1135 | void *ptr; |
1136 | New(711, ptr, PERL_ARENA_SIZE/sizeof(NV), NV); | |
1137 | *((void **) ptr) = (void *)PL_xnv_arenaroot; | |
612f20c3 GS |
1138 | PL_xnv_arenaroot = ptr; |
1139 | ||
1140 | xnv = (NV*) ptr; | |
9c17f24a | 1141 | xnvend = &xnv[PERL_ARENA_SIZE / sizeof(NV) - 1]; |
65202027 | 1142 | xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */ |
3280af22 | 1143 | PL_xnv_root = xnv; |
463ee0b2 | 1144 | while (xnv < xnvend) { |
65202027 | 1145 | *(NV**)xnv = (NV*)(xnv + 1); |
463ee0b2 LW |
1146 | xnv++; |
1147 | } | |
cac9b346 NC |
1148 | *(NV**)xnv = 0; |
1149 | } | |
1150 | ||
1151 | /* allocate another arena's worth of struct xpv */ | |
1152 | ||
1153 | STATIC void | |
1154 | S_more_xpv(pTHX) | |
1155 | { | |
59813432 NC |
1156 | xpv_allocated* xpv; |
1157 | xpv_allocated* xpvend; | |
1158 | New(713, xpv, PERL_ARENA_SIZE/sizeof(xpv_allocated), xpv_allocated); | |
1159 | *((xpv_allocated**)xpv) = PL_xpv_arenaroot; | |
cac9b346 NC |
1160 | PL_xpv_arenaroot = xpv; |
1161 | ||
59813432 | 1162 | xpvend = &xpv[PERL_ARENA_SIZE / sizeof(xpv_allocated) - 1]; |
cac9b346 NC |
1163 | PL_xpv_root = ++xpv; |
1164 | while (xpv < xpvend) { | |
59813432 | 1165 | *((xpv_allocated**)xpv) = xpv + 1; |
cac9b346 NC |
1166 | xpv++; |
1167 | } | |
59813432 | 1168 | *((xpv_allocated**)xpv) = 0; |
cac9b346 NC |
1169 | } |
1170 | ||
1171 | /* allocate another arena's worth of struct xpviv */ | |
1172 | ||
1173 | STATIC void | |
1174 | S_more_xpviv(pTHX) | |
1175 | { | |
311a25d9 NC |
1176 | xpviv_allocated* xpviv; |
1177 | xpviv_allocated* xpvivend; | |
1178 | New(713, xpviv, PERL_ARENA_SIZE/sizeof(xpviv_allocated), xpviv_allocated); | |
1179 | *((xpviv_allocated**)xpviv) = PL_xpviv_arenaroot; | |
cac9b346 NC |
1180 | PL_xpviv_arenaroot = xpviv; |
1181 | ||
311a25d9 | 1182 | xpvivend = &xpviv[PERL_ARENA_SIZE / sizeof(xpviv_allocated) - 1]; |
cac9b346 NC |
1183 | PL_xpviv_root = ++xpviv; |
1184 | while (xpviv < xpvivend) { | |
311a25d9 | 1185 | *((xpviv_allocated**)xpviv) = xpviv + 1; |
cac9b346 NC |
1186 | xpviv++; |
1187 | } | |
311a25d9 | 1188 | *((xpviv_allocated**)xpviv) = 0; |
cac9b346 NC |
1189 | } |
1190 | ||
1191 | /* allocate another arena's worth of struct xpvnv */ | |
1192 | ||
1193 | STATIC void | |
1194 | S_more_xpvnv(pTHX) | |
1195 | { | |
1196 | XPVNV* xpvnv; | |
1197 | XPVNV* xpvnvend; | |
1198 | New(715, xpvnv, PERL_ARENA_SIZE/sizeof(XPVNV), XPVNV); | |
7b2c381c | 1199 | *((XPVNV**)xpvnv) = PL_xpvnv_arenaroot; |
cac9b346 NC |
1200 | PL_xpvnv_arenaroot = xpvnv; |
1201 | ||
1202 | xpvnvend = &xpvnv[PERL_ARENA_SIZE / sizeof(XPVNV) - 1]; | |
1203 | PL_xpvnv_root = ++xpvnv; | |
1204 | while (xpvnv < xpvnvend) { | |
7b2c381c | 1205 | *((XPVNV**)xpvnv) = xpvnv + 1; |
cac9b346 NC |
1206 | xpvnv++; |
1207 | } | |
7b2c381c | 1208 | *((XPVNV**)xpvnv) = 0; |
cac9b346 NC |
1209 | } |
1210 | ||
1211 | /* allocate another arena's worth of struct xpvcv */ | |
1212 | ||
1213 | STATIC void | |
1214 | S_more_xpvcv(pTHX) | |
1215 | { | |
1216 | XPVCV* xpvcv; | |
1217 | XPVCV* xpvcvend; | |
1218 | New(716, xpvcv, PERL_ARENA_SIZE/sizeof(XPVCV), XPVCV); | |
7b2c381c | 1219 | *((XPVCV**)xpvcv) = PL_xpvcv_arenaroot; |
cac9b346 NC |
1220 | PL_xpvcv_arenaroot = xpvcv; |
1221 | ||
1222 | xpvcvend = &xpvcv[PERL_ARENA_SIZE / sizeof(XPVCV) - 1]; | |
1223 | PL_xpvcv_root = ++xpvcv; | |
1224 | while (xpvcv < xpvcvend) { | |
7b2c381c | 1225 | *((XPVCV**)xpvcv) = xpvcv + 1; |
cac9b346 NC |
1226 | xpvcv++; |
1227 | } | |
7b2c381c | 1228 | *((XPVCV**)xpvcv) = 0; |
cac9b346 NC |
1229 | } |
1230 | ||
1231 | /* allocate another arena's worth of struct xpvav */ | |
1232 | ||
1233 | STATIC void | |
1234 | S_more_xpvav(pTHX) | |
1235 | { | |
59813432 NC |
1236 | xpvav_allocated* xpvav; |
1237 | xpvav_allocated* xpvavend; | |
1238 | New(717, xpvav, PERL_ARENA_SIZE/sizeof(xpvav_allocated), | |
1239 | xpvav_allocated); | |
1240 | *((xpvav_allocated**)xpvav) = PL_xpvav_arenaroot; | |
cac9b346 NC |
1241 | PL_xpvav_arenaroot = xpvav; |
1242 | ||
59813432 | 1243 | xpvavend = &xpvav[PERL_ARENA_SIZE / sizeof(xpvav_allocated) - 1]; |
cac9b346 NC |
1244 | PL_xpvav_root = ++xpvav; |
1245 | while (xpvav < xpvavend) { | |
59813432 | 1246 | *((xpvav_allocated**)xpvav) = xpvav + 1; |
cac9b346 NC |
1247 | xpvav++; |
1248 | } | |
59813432 | 1249 | *((xpvav_allocated**)xpvav) = 0; |
cac9b346 NC |
1250 | } |
1251 | ||
1252 | /* allocate another arena's worth of struct xpvhv */ | |
1253 | ||
1254 | STATIC void | |
1255 | S_more_xpvhv(pTHX) | |
1256 | { | |
59813432 NC |
1257 | xpvhv_allocated* xpvhv; |
1258 | xpvhv_allocated* xpvhvend; | |
1259 | New(718, xpvhv, PERL_ARENA_SIZE/sizeof(xpvhv_allocated), | |
1260 | xpvhv_allocated); | |
1261 | *((xpvhv_allocated**)xpvhv) = PL_xpvhv_arenaroot; | |
cac9b346 NC |
1262 | PL_xpvhv_arenaroot = xpvhv; |
1263 | ||
59813432 | 1264 | xpvhvend = &xpvhv[PERL_ARENA_SIZE / sizeof(xpvhv_allocated) - 1]; |
cac9b346 NC |
1265 | PL_xpvhv_root = ++xpvhv; |
1266 | while (xpvhv < xpvhvend) { | |
59813432 | 1267 | *((xpvhv_allocated**)xpvhv) = xpvhv + 1; |
cac9b346 NC |
1268 | xpvhv++; |
1269 | } | |
59813432 | 1270 | *((xpvhv_allocated**)xpvhv) = 0; |
cac9b346 NC |
1271 | } |
1272 | ||
1273 | /* allocate another arena's worth of struct xpvmg */ | |
1274 | ||
1275 | STATIC void | |
1276 | S_more_xpvmg(pTHX) | |
1277 | { | |
1278 | XPVMG* xpvmg; | |
1279 | XPVMG* xpvmgend; | |
1280 | New(719, xpvmg, PERL_ARENA_SIZE/sizeof(XPVMG), XPVMG); | |
7b2c381c | 1281 | *((XPVMG**)xpvmg) = PL_xpvmg_arenaroot; |
cac9b346 NC |
1282 | PL_xpvmg_arenaroot = xpvmg; |
1283 | ||
1284 | xpvmgend = &xpvmg[PERL_ARENA_SIZE / sizeof(XPVMG) - 1]; | |
1285 | PL_xpvmg_root = ++xpvmg; | |
1286 | while (xpvmg < xpvmgend) { | |
7b2c381c | 1287 | *((XPVMG**)xpvmg) = xpvmg + 1; |
cac9b346 NC |
1288 | xpvmg++; |
1289 | } | |
7b2c381c | 1290 | *((XPVMG**)xpvmg) = 0; |
cac9b346 NC |
1291 | } |
1292 | ||
1293 | /* allocate another arena's worth of struct xpvgv */ | |
1294 | ||
1295 | STATIC void | |
1296 | S_more_xpvgv(pTHX) | |
1297 | { | |
1298 | XPVGV* xpvgv; | |
1299 | XPVGV* xpvgvend; | |
1300 | New(720, xpvgv, PERL_ARENA_SIZE/sizeof(XPVGV), XPVGV); | |
7b2c381c | 1301 | *((XPVGV**)xpvgv) = PL_xpvgv_arenaroot; |
cac9b346 NC |
1302 | PL_xpvgv_arenaroot = xpvgv; |
1303 | ||
1304 | xpvgvend = &xpvgv[PERL_ARENA_SIZE / sizeof(XPVGV) - 1]; | |
1305 | PL_xpvgv_root = ++xpvgv; | |
1306 | while (xpvgv < xpvgvend) { | |
7b2c381c | 1307 | *((XPVGV**)xpvgv) = xpvgv + 1; |
cac9b346 NC |
1308 | xpvgv++; |
1309 | } | |
7b2c381c | 1310 | *((XPVGV**)xpvgv) = 0; |
cac9b346 NC |
1311 | } |
1312 | ||
1313 | /* allocate another arena's worth of struct xpvlv */ | |
1314 | ||
1315 | STATIC void | |
1316 | S_more_xpvlv(pTHX) | |
1317 | { | |
1318 | XPVLV* xpvlv; | |
1319 | XPVLV* xpvlvend; | |
1320 | New(720, xpvlv, PERL_ARENA_SIZE/sizeof(XPVLV), XPVLV); | |
7b2c381c | 1321 | *((XPVLV**)xpvlv) = PL_xpvlv_arenaroot; |
cac9b346 NC |
1322 | PL_xpvlv_arenaroot = xpvlv; |
1323 | ||
1324 | xpvlvend = &xpvlv[PERL_ARENA_SIZE / sizeof(XPVLV) - 1]; | |
1325 | PL_xpvlv_root = ++xpvlv; | |
1326 | while (xpvlv < xpvlvend) { | |
7b2c381c | 1327 | *((XPVLV**)xpvlv) = xpvlv + 1; |
cac9b346 NC |
1328 | xpvlv++; |
1329 | } | |
7b2c381c | 1330 | *((XPVLV**)xpvlv) = 0; |
cac9b346 NC |
1331 | } |
1332 | ||
1333 | /* allocate another arena's worth of struct xpvbm */ | |
1334 | ||
1335 | STATIC void | |
1336 | S_more_xpvbm(pTHX) | |
1337 | { | |
1338 | XPVBM* xpvbm; | |
1339 | XPVBM* xpvbmend; | |
1340 | New(721, xpvbm, PERL_ARENA_SIZE/sizeof(XPVBM), XPVBM); | |
7b2c381c | 1341 | *((XPVBM**)xpvbm) = PL_xpvbm_arenaroot; |
cac9b346 NC |
1342 | PL_xpvbm_arenaroot = xpvbm; |
1343 | ||
1344 | xpvbmend = &xpvbm[PERL_ARENA_SIZE / sizeof(XPVBM) - 1]; | |
1345 | PL_xpvbm_root = ++xpvbm; | |
1346 | while (xpvbm < xpvbmend) { | |
7b2c381c | 1347 | *((XPVBM**)xpvbm) = xpvbm + 1; |
cac9b346 NC |
1348 | xpvbm++; |
1349 | } | |
7b2c381c | 1350 | *((XPVBM**)xpvbm) = 0; |
cac9b346 | 1351 | } |
612f20c3 | 1352 | |
cac9b346 NC |
1353 | /* grab a new NV body from the free list, allocating more if necessary */ |
1354 | ||
1355 | STATIC XPVNV* | |
1356 | S_new_xnv(pTHX) | |
1357 | { | |
1358 | NV* xnv; | |
1359 | LOCK_SV_MUTEX; | |
1360 | if (!PL_xnv_root) | |
1361 | S_more_xnv(aTHX); | |
1362 | xnv = PL_xnv_root; | |
1363 | PL_xnv_root = *(NV**)xnv; | |
1364 | UNLOCK_SV_MUTEX; | |
1365 | return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv)); | |
1366 | } | |
1367 | ||
1368 | /* return an NV body to the free list */ | |
1369 | ||
1370 | STATIC void | |
1371 | S_del_xnv(pTHX_ XPVNV *p) | |
1372 | { | |
1373 | NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv)); | |
1374 | LOCK_SV_MUTEX; | |
1375 | *(NV**)xnv = PL_xnv_root; | |
1376 | PL_xnv_root = xnv; | |
1377 | UNLOCK_SV_MUTEX; | |
ed6116ce LW |
1378 | } |
1379 | ||
645c22ef DM |
1380 | /* grab a new struct xpv from the free list, allocating more if necessary */ |
1381 | ||
76e3520e | 1382 | STATIC XPV* |
cea2e8a9 | 1383 | S_new_xpv(pTHX) |
463ee0b2 | 1384 | { |
59813432 | 1385 | xpv_allocated* xpv; |
cbe51380 GS |
1386 | LOCK_SV_MUTEX; |
1387 | if (!PL_xpv_root) | |
cac9b346 | 1388 | S_more_xpv(aTHX); |
cbe51380 | 1389 | xpv = PL_xpv_root; |
59813432 | 1390 | PL_xpv_root = *(xpv_allocated**)xpv; |
cbe51380 | 1391 | UNLOCK_SV_MUTEX; |
59813432 NC |
1392 | /* If xpv_allocated is the same structure as XPV then the two OFFSETs |
1393 | sum to zero, and the pointer is unchanged. If the allocated structure | |
1394 | is smaller (no initial IV actually allocated) then the net effect is | |
1395 | to subtract the size of the IV from the pointer, to return a new pointer | |
1396 | as if an initial IV were actually allocated. */ | |
1397 | return (XPV*)((char*)xpv - STRUCT_OFFSET(XPV, xpv_cur) | |
1398 | + STRUCT_OFFSET(xpv_allocated, xpv_cur)); | |
463ee0b2 LW |
1399 | } |
1400 | ||
645c22ef DM |
1401 | /* return a struct xpv to the free list */ |
1402 | ||
76e3520e | 1403 | STATIC void |
cea2e8a9 | 1404 | S_del_xpv(pTHX_ XPV *p) |
463ee0b2 | 1405 | { |
59813432 NC |
1406 | xpv_allocated* xpv |
1407 | = (xpv_allocated*)((char*)(p) + STRUCT_OFFSET(XPV, xpv_cur) | |
1408 | - STRUCT_OFFSET(xpv_allocated, xpv_cur)); | |
cbe51380 | 1409 | LOCK_SV_MUTEX; |
59813432 NC |
1410 | *(xpv_allocated**)xpv = PL_xpv_root; |
1411 | PL_xpv_root = xpv; | |
cbe51380 | 1412 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
1413 | } |
1414 | ||
645c22ef DM |
1415 | /* grab a new struct xpviv from the free list, allocating more if necessary */ |
1416 | ||
932e9ff9 VB |
1417 | STATIC XPVIV* |
1418 | S_new_xpviv(pTHX) | |
1419 | { | |
311a25d9 | 1420 | xpviv_allocated* xpviv; |
932e9ff9 VB |
1421 | LOCK_SV_MUTEX; |
1422 | if (!PL_xpviv_root) | |
cac9b346 | 1423 | S_more_xpviv(aTHX); |
932e9ff9 | 1424 | xpviv = PL_xpviv_root; |
311a25d9 | 1425 | PL_xpviv_root = *(xpviv_allocated**)xpviv; |
932e9ff9 | 1426 | UNLOCK_SV_MUTEX; |
311a25d9 NC |
1427 | /* If xpviv_allocated is the same structure as XPVIV then the two OFFSETs |
1428 | sum to zero, and the pointer is unchanged. If the allocated structure | |
1429 | is smaller (no initial IV actually allocated) then the net effect is | |
1430 | to subtract the size of the IV from the pointer, to return a new pointer | |
1431 | as if an initial IV were actually allocated. */ | |
1432 | return (XPVIV*)((char*)xpviv - STRUCT_OFFSET(XPVIV, xpv_cur) | |
1433 | + STRUCT_OFFSET(xpviv_allocated, xpv_cur)); | |
932e9ff9 VB |
1434 | } |
1435 | ||
645c22ef DM |
1436 | /* return a struct xpviv to the free list */ |
1437 | ||
932e9ff9 VB |
1438 | STATIC void |
1439 | S_del_xpviv(pTHX_ XPVIV *p) | |
1440 | { | |
311a25d9 NC |
1441 | xpviv_allocated* xpviv |
1442 | = (xpviv_allocated*)((char*)(p) + STRUCT_OFFSET(XPVIV, xpv_cur) | |
1443 | - STRUCT_OFFSET(xpviv_allocated, xpv_cur)); | |
932e9ff9 | 1444 | LOCK_SV_MUTEX; |
311a25d9 NC |
1445 | *(xpviv_allocated**)xpviv = PL_xpviv_root; |
1446 | PL_xpviv_root = xpviv; | |
932e9ff9 VB |
1447 | UNLOCK_SV_MUTEX; |
1448 | } | |
1449 | ||
645c22ef DM |
1450 | /* grab a new struct xpvnv from the free list, allocating more if necessary */ |
1451 | ||
932e9ff9 VB |
1452 | STATIC XPVNV* |
1453 | S_new_xpvnv(pTHX) | |
1454 | { | |
1455 | XPVNV* xpvnv; | |
1456 | LOCK_SV_MUTEX; | |
1457 | if (!PL_xpvnv_root) | |
cac9b346 | 1458 | S_more_xpvnv(aTHX); |
932e9ff9 | 1459 | xpvnv = PL_xpvnv_root; |
7b2c381c | 1460 | PL_xpvnv_root = *(XPVNV**)xpvnv; |
932e9ff9 VB |
1461 | UNLOCK_SV_MUTEX; |
1462 | return xpvnv; | |
1463 | } | |
1464 | ||
645c22ef DM |
1465 | /* return a struct xpvnv to the free list */ |
1466 | ||
932e9ff9 VB |
1467 | STATIC void |
1468 | S_del_xpvnv(pTHX_ XPVNV *p) | |
1469 | { | |
1470 | LOCK_SV_MUTEX; | |
7b2c381c | 1471 | *(XPVNV**)p = PL_xpvnv_root; |
932e9ff9 VB |
1472 | PL_xpvnv_root = p; |
1473 | UNLOCK_SV_MUTEX; | |
1474 | } | |
1475 | ||
645c22ef DM |
1476 | /* grab a new struct xpvcv from the free list, allocating more if necessary */ |
1477 | ||
932e9ff9 VB |
1478 | STATIC XPVCV* |
1479 | S_new_xpvcv(pTHX) | |
1480 | { | |
1481 | XPVCV* xpvcv; | |
1482 | LOCK_SV_MUTEX; | |
1483 | if (!PL_xpvcv_root) | |
cac9b346 | 1484 | S_more_xpvcv(aTHX); |
932e9ff9 | 1485 | xpvcv = PL_xpvcv_root; |
7b2c381c | 1486 | PL_xpvcv_root = *(XPVCV**)xpvcv; |
932e9ff9 VB |
1487 | UNLOCK_SV_MUTEX; |
1488 | return xpvcv; | |
1489 | } | |
1490 | ||
645c22ef DM |
1491 | /* return a struct xpvcv to the free list */ |
1492 | ||
932e9ff9 VB |
1493 | STATIC void |
1494 | S_del_xpvcv(pTHX_ XPVCV *p) | |
1495 | { | |
1496 | LOCK_SV_MUTEX; | |
7b2c381c | 1497 | *(XPVCV**)p = PL_xpvcv_root; |
932e9ff9 VB |
1498 | PL_xpvcv_root = p; |
1499 | UNLOCK_SV_MUTEX; | |
1500 | } | |
1501 | ||
645c22ef DM |
1502 | /* grab a new struct xpvav from the free list, allocating more if necessary */ |
1503 | ||
932e9ff9 VB |
1504 | STATIC XPVAV* |
1505 | S_new_xpvav(pTHX) | |
1506 | { | |
59813432 | 1507 | xpvav_allocated* xpvav; |
932e9ff9 VB |
1508 | LOCK_SV_MUTEX; |
1509 | if (!PL_xpvav_root) | |
cac9b346 | 1510 | S_more_xpvav(aTHX); |
932e9ff9 | 1511 | xpvav = PL_xpvav_root; |
59813432 | 1512 | PL_xpvav_root = *(xpvav_allocated**)xpvav; |
932e9ff9 | 1513 | UNLOCK_SV_MUTEX; |
59813432 NC |
1514 | return (XPVAV*)((char*)xpvav - STRUCT_OFFSET(XPVAV, xav_fill) |
1515 | + STRUCT_OFFSET(xpvav_allocated, xav_fill)); | |
932e9ff9 VB |
1516 | } |
1517 | ||
645c22ef DM |
1518 | /* return a struct xpvav to the free list */ |
1519 | ||
932e9ff9 VB |
1520 | STATIC void |
1521 | S_del_xpvav(pTHX_ XPVAV *p) | |
1522 | { | |
59813432 NC |
1523 | xpvav_allocated* xpvav |
1524 | = (xpvav_allocated*)((char*)(p) + STRUCT_OFFSET(XPVAV, xav_fill) | |
1525 | - STRUCT_OFFSET(xpvav_allocated, xav_fill)); | |
932e9ff9 | 1526 | LOCK_SV_MUTEX; |
59813432 NC |
1527 | *(xpvav_allocated**)xpvav = PL_xpvav_root; |
1528 | PL_xpvav_root = xpvav; | |
932e9ff9 VB |
1529 | UNLOCK_SV_MUTEX; |
1530 | } | |
1531 | ||
645c22ef DM |
1532 | /* grab a new struct xpvhv from the free list, allocating more if necessary */ |
1533 | ||
932e9ff9 VB |
1534 | STATIC XPVHV* |
1535 | S_new_xpvhv(pTHX) | |
1536 | { | |
59813432 | 1537 | xpvhv_allocated* xpvhv; |
932e9ff9 VB |
1538 | LOCK_SV_MUTEX; |
1539 | if (!PL_xpvhv_root) | |
cac9b346 | 1540 | S_more_xpvhv(aTHX); |
932e9ff9 | 1541 | xpvhv = PL_xpvhv_root; |
59813432 | 1542 | PL_xpvhv_root = *(xpvhv_allocated**)xpvhv; |
932e9ff9 | 1543 | UNLOCK_SV_MUTEX; |
59813432 NC |
1544 | return (XPVHV*)((char*)xpvhv - STRUCT_OFFSET(XPVHV, xhv_fill) |
1545 | + STRUCT_OFFSET(xpvhv_allocated, xhv_fill)); | |
932e9ff9 VB |
1546 | } |
1547 | ||
645c22ef DM |
1548 | /* return a struct xpvhv to the free list */ |
1549 | ||
932e9ff9 VB |
1550 | STATIC void |
1551 | S_del_xpvhv(pTHX_ XPVHV *p) | |
1552 | { | |
59813432 NC |
1553 | xpvhv_allocated* xpvhv |
1554 | = (xpvhv_allocated*)((char*)(p) + STRUCT_OFFSET(XPVHV, xhv_fill) | |
1555 | - STRUCT_OFFSET(xpvhv_allocated, xhv_fill)); | |
932e9ff9 | 1556 | LOCK_SV_MUTEX; |
59813432 NC |
1557 | *(xpvhv_allocated**)xpvhv = PL_xpvhv_root; |
1558 | PL_xpvhv_root = xpvhv; | |
932e9ff9 VB |
1559 | UNLOCK_SV_MUTEX; |
1560 | } | |
1561 | ||
645c22ef DM |
1562 | /* grab a new struct xpvmg from the free list, allocating more if necessary */ |
1563 | ||
932e9ff9 VB |
1564 | STATIC XPVMG* |
1565 | S_new_xpvmg(pTHX) | |
1566 | { | |
1567 | XPVMG* xpvmg; | |
1568 | LOCK_SV_MUTEX; | |
1569 | if (!PL_xpvmg_root) | |
cac9b346 | 1570 | S_more_xpvmg(aTHX); |
932e9ff9 | 1571 | xpvmg = PL_xpvmg_root; |
7b2c381c | 1572 | PL_xpvmg_root = *(XPVMG**)xpvmg; |
932e9ff9 VB |
1573 | UNLOCK_SV_MUTEX; |
1574 | return xpvmg; | |
1575 | } | |
1576 | ||
645c22ef DM |
1577 | /* return a struct xpvmg to the free list */ |
1578 | ||
932e9ff9 VB |
1579 | STATIC void |
1580 | S_del_xpvmg(pTHX_ XPVMG *p) | |
1581 | { | |
1582 | LOCK_SV_MUTEX; | |
7b2c381c | 1583 | *(XPVMG**)p = PL_xpvmg_root; |
932e9ff9 VB |
1584 | PL_xpvmg_root = p; |
1585 | UNLOCK_SV_MUTEX; | |
1586 | } | |
1587 | ||
727879eb NC |
1588 | /* grab a new struct xpvgv from the free list, allocating more if necessary */ |
1589 | ||
1590 | STATIC XPVGV* | |
1591 | S_new_xpvgv(pTHX) | |
1592 | { | |
1593 | XPVGV* xpvgv; | |
1594 | LOCK_SV_MUTEX; | |
1595 | if (!PL_xpvgv_root) | |
cac9b346 | 1596 | S_more_xpvgv(aTHX); |
727879eb | 1597 | xpvgv = PL_xpvgv_root; |
7b2c381c | 1598 | PL_xpvgv_root = *(XPVGV**)xpvgv; |
727879eb NC |
1599 | UNLOCK_SV_MUTEX; |
1600 | return xpvgv; | |
1601 | } | |
1602 | ||
1603 | /* return a struct xpvgv to the free list */ | |
1604 | ||
1605 | STATIC void | |
1606 | S_del_xpvgv(pTHX_ XPVGV *p) | |
1607 | { | |
1608 | LOCK_SV_MUTEX; | |
7b2c381c | 1609 | *(XPVGV**)p = PL_xpvgv_root; |
727879eb NC |
1610 | PL_xpvgv_root = p; |
1611 | UNLOCK_SV_MUTEX; | |
1612 | } | |
1613 | ||
645c22ef DM |
1614 | /* grab a new struct xpvlv from the free list, allocating more if necessary */ |
1615 | ||
932e9ff9 VB |
1616 | STATIC XPVLV* |
1617 | S_new_xpvlv(pTHX) | |
1618 | { | |
1619 | XPVLV* xpvlv; | |
1620 | LOCK_SV_MUTEX; | |
1621 | if (!PL_xpvlv_root) | |
cac9b346 | 1622 | S_more_xpvlv(aTHX); |
932e9ff9 | 1623 | xpvlv = PL_xpvlv_root; |
7b2c381c | 1624 | PL_xpvlv_root = *(XPVLV**)xpvlv; |
932e9ff9 VB |
1625 | UNLOCK_SV_MUTEX; |
1626 | return xpvlv; | |
1627 | } | |
1628 | ||
645c22ef DM |
1629 | /* return a struct xpvlv to the free list */ |
1630 | ||
932e9ff9 VB |
1631 | STATIC void |
1632 | S_del_xpvlv(pTHX_ XPVLV *p) | |
1633 | { | |
1634 | LOCK_SV_MUTEX; | |
7b2c381c | 1635 | *(XPVLV**)p = PL_xpvlv_root; |
932e9ff9 VB |
1636 | PL_xpvlv_root = p; |
1637 | UNLOCK_SV_MUTEX; | |
1638 | } | |
1639 | ||
645c22ef DM |
1640 | /* grab a new struct xpvbm from the free list, allocating more if necessary */ |
1641 | ||
932e9ff9 VB |
1642 | STATIC XPVBM* |
1643 | S_new_xpvbm(pTHX) | |
1644 | { | |
1645 | XPVBM* xpvbm; | |
1646 | LOCK_SV_MUTEX; | |
1647 | if (!PL_xpvbm_root) | |
cac9b346 | 1648 | S_more_xpvbm(aTHX); |
932e9ff9 | 1649 | xpvbm = PL_xpvbm_root; |
7b2c381c | 1650 | PL_xpvbm_root = *(XPVBM**)xpvbm; |
932e9ff9 VB |
1651 | UNLOCK_SV_MUTEX; |
1652 | return xpvbm; | |
1653 | } | |
1654 | ||
645c22ef DM |
1655 | /* return a struct xpvbm to the free list */ |
1656 | ||
932e9ff9 VB |
1657 | STATIC void |
1658 | S_del_xpvbm(pTHX_ XPVBM *p) | |
1659 | { | |
1660 | LOCK_SV_MUTEX; | |
7b2c381c | 1661 | *(XPVBM**)p = PL_xpvbm_root; |
932e9ff9 VB |
1662 | PL_xpvbm_root = p; |
1663 | UNLOCK_SV_MUTEX; | |
1664 | } | |
1665 | ||
7bab3ede MB |
1666 | #define my_safemalloc(s) (void*)safemalloc(s) |
1667 | #define my_safefree(p) safefree((char*)p) | |
463ee0b2 | 1668 | |
d33b2eba | 1669 | #ifdef PURIFY |
463ee0b2 | 1670 | |
d33b2eba GS |
1671 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
1672 | #define del_XNV(p) my_safefree(p) | |
463ee0b2 | 1673 | |
d33b2eba GS |
1674 | #define new_XPV() my_safemalloc(sizeof(XPV)) |
1675 | #define del_XPV(p) my_safefree(p) | |
9b94d1dd | 1676 | |
d33b2eba GS |
1677 | #define new_XPVIV() my_safemalloc(sizeof(XPVIV)) |
1678 | #define del_XPVIV(p) my_safefree(p) | |
932e9ff9 | 1679 | |
d33b2eba GS |
1680 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
1681 | #define del_XPVNV(p) my_safefree(p) | |
932e9ff9 | 1682 | |
d33b2eba GS |
1683 | #define new_XPVCV() my_safemalloc(sizeof(XPVCV)) |
1684 | #define del_XPVCV(p) my_safefree(p) | |
932e9ff9 | 1685 | |
d33b2eba GS |
1686 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1687 | #define del_XPVAV(p) my_safefree(p) | |
1688 | ||
1689 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) | |
1690 | #define del_XPVHV(p) my_safefree(p) | |
1c846c1f | 1691 | |
d33b2eba GS |
1692 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1693 | #define del_XPVMG(p) my_safefree(p) | |
1694 | ||
727879eb NC |
1695 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1696 | #define del_XPVGV(p) my_safefree(p) | |
1697 | ||
d33b2eba GS |
1698 | #define new_XPVLV() my_safemalloc(sizeof(XPVLV)) |
1699 | #define del_XPVLV(p) my_safefree(p) | |
1700 | ||
1701 | #define new_XPVBM() my_safemalloc(sizeof(XPVBM)) | |
1702 | #define del_XPVBM(p) my_safefree(p) | |
1703 | ||
1704 | #else /* !PURIFY */ | |
1705 | ||
d33b2eba GS |
1706 | #define new_XNV() (void*)new_xnv() |
1707 | #define del_XNV(p) del_xnv((XPVNV*) p) | |
9b94d1dd | 1708 | |
d33b2eba GS |
1709 | #define new_XPV() (void*)new_xpv() |
1710 | #define del_XPV(p) del_xpv((XPV *)p) | |
1711 | ||
1712 | #define new_XPVIV() (void*)new_xpviv() | |
1713 | #define del_XPVIV(p) del_xpviv((XPVIV *)p) | |
1714 | ||
1715 | #define new_XPVNV() (void*)new_xpvnv() | |
1716 | #define del_XPVNV(p) del_xpvnv((XPVNV *)p) | |
1717 | ||
1718 | #define new_XPVCV() (void*)new_xpvcv() | |
1719 | #define del_XPVCV(p) del_xpvcv((XPVCV *)p) | |
1720 | ||
1721 | #define new_XPVAV() (void*)new_xpvav() | |
1722 | #define del_XPVAV(p) del_xpvav((XPVAV *)p) | |
1723 | ||
1724 | #define new_XPVHV() (void*)new_xpvhv() | |
1725 | #define del_XPVHV(p) del_xpvhv((XPVHV *)p) | |
1c846c1f | 1726 | |
d33b2eba GS |
1727 | #define new_XPVMG() (void*)new_xpvmg() |
1728 | #define del_XPVMG(p) del_xpvmg((XPVMG *)p) | |
1729 | ||
727879eb NC |
1730 | #define new_XPVGV() (void*)new_xpvgv() |
1731 | #define del_XPVGV(p) del_xpvgv((XPVGV *)p) | |
1732 | ||
d33b2eba GS |
1733 | #define new_XPVLV() (void*)new_xpvlv() |
1734 | #define del_XPVLV(p) del_xpvlv((XPVLV *)p) | |
1735 | ||
1736 | #define new_XPVBM() (void*)new_xpvbm() | |
1737 | #define del_XPVBM(p) del_xpvbm((XPVBM *)p) | |
1738 | ||
1739 | #endif /* PURIFY */ | |
9b94d1dd | 1740 | |
d33b2eba GS |
1741 | #define new_XPVFM() my_safemalloc(sizeof(XPVFM)) |
1742 | #define del_XPVFM(p) my_safefree(p) | |
1c846c1f | 1743 | |
d33b2eba GS |
1744 | #define new_XPVIO() my_safemalloc(sizeof(XPVIO)) |
1745 | #define del_XPVIO(p) my_safefree(p) | |
8990e307 | 1746 | |
954c1994 GS |
1747 | /* |
1748 | =for apidoc sv_upgrade | |
1749 | ||
ff276b08 | 1750 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 1751 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 1752 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
1753 | |
1754 | =cut | |
1755 | */ | |
1756 | ||
79072805 | 1757 | bool |
864dbfa3 | 1758 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt) |
79072805 | 1759 | { |
e763e3dc | 1760 | |
d2e56290 NC |
1761 | char* pv; |
1762 | U32 cur; | |
1763 | U32 len; | |
1764 | IV iv; | |
1765 | NV nv; | |
1766 | MAGIC* magic; | |
1767 | HV* stash; | |
79072805 | 1768 | |
765f542d NC |
1769 | if (mt != SVt_PV && SvIsCOW(sv)) { |
1770 | sv_force_normal_flags(sv, 0); | |
f130fd45 NIS |
1771 | } |
1772 | ||
79072805 LW |
1773 | if (SvTYPE(sv) == mt) |
1774 | return TRUE; | |
1775 | ||
d2e56290 NC |
1776 | pv = NULL; |
1777 | cur = 0; | |
1778 | len = 0; | |
1779 | iv = 0; | |
1780 | nv = 0.0; | |
1781 | magic = NULL; | |
1782 | stash = Nullhv; | |
1783 | ||
79072805 LW |
1784 | switch (SvTYPE(sv)) { |
1785 | case SVt_NULL: | |
79072805 | 1786 | break; |
79072805 | 1787 | case SVt_IV: |
463ee0b2 | 1788 | iv = SvIVX(sv); |
ed6116ce | 1789 | if (mt == SVt_NV) |
463ee0b2 | 1790 | mt = SVt_PVNV; |
ed6116ce LW |
1791 | else if (mt < SVt_PVIV) |
1792 | mt = SVt_PVIV; | |
79072805 LW |
1793 | break; |
1794 | case SVt_NV: | |
463ee0b2 | 1795 | nv = SvNVX(sv); |
79072805 | 1796 | del_XNV(SvANY(sv)); |
ed6116ce | 1797 | if (mt < SVt_PVNV) |
79072805 LW |
1798 | mt = SVt_PVNV; |
1799 | break; | |
ed6116ce LW |
1800 | case SVt_RV: |
1801 | pv = (char*)SvRV(sv); | |
ed6116ce | 1802 | break; |
79072805 | 1803 | case SVt_PV: |
463ee0b2 | 1804 | pv = SvPVX(sv); |
79072805 LW |
1805 | cur = SvCUR(sv); |
1806 | len = SvLEN(sv); | |
79072805 | 1807 | del_XPV(SvANY(sv)); |
748a9306 LW |
1808 | if (mt <= SVt_IV) |
1809 | mt = SVt_PVIV; | |
1810 | else if (mt == SVt_NV) | |
1811 | mt = SVt_PVNV; | |
79072805 LW |
1812 | break; |
1813 | case SVt_PVIV: | |
463ee0b2 | 1814 | pv = SvPVX(sv); |
79072805 LW |
1815 | cur = SvCUR(sv); |
1816 | len = SvLEN(sv); | |
463ee0b2 | 1817 | iv = SvIVX(sv); |
79072805 LW |
1818 | del_XPVIV(SvANY(sv)); |
1819 | break; | |
1820 | case SVt_PVNV: | |
463ee0b2 | 1821 | pv = SvPVX(sv); |
79072805 LW |
1822 | cur = SvCUR(sv); |
1823 | len = SvLEN(sv); | |
463ee0b2 LW |
1824 | iv = SvIVX(sv); |
1825 | nv = SvNVX(sv); | |
79072805 LW |
1826 | del_XPVNV(SvANY(sv)); |
1827 | break; | |
1828 | case SVt_PVMG: | |
0ec50a73 NC |
1829 | /* Because the XPVMG of PL_mess_sv isn't allocated from the arena, |
1830 | there's no way that it can be safely upgraded, because perl.c | |
1831 | expects to Safefree(SvANY(PL_mess_sv)) */ | |
1832 | assert(sv != PL_mess_sv); | |
bce8f412 NC |
1833 | /* This flag bit is used to mean other things in other scalar types. |
1834 | Given that it only has meaning inside the pad, it shouldn't be set | |
1835 | on anything that can get upgraded. */ | |
1836 | assert((SvFLAGS(sv) & SVpad_TYPED) == 0); | |
463ee0b2 | 1837 | pv = SvPVX(sv); |
79072805 LW |
1838 | cur = SvCUR(sv); |
1839 | len = SvLEN(sv); | |
463ee0b2 LW |
1840 | iv = SvIVX(sv); |
1841 | nv = SvNVX(sv); | |
79072805 LW |
1842 | magic = SvMAGIC(sv); |
1843 | stash = SvSTASH(sv); | |
1844 | del_XPVMG(SvANY(sv)); | |
1845 | break; | |
1846 | default: | |
cea2e8a9 | 1847 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); |
79072805 LW |
1848 | } |
1849 | ||
ffb05e06 NC |
1850 | SvFLAGS(sv) &= ~SVTYPEMASK; |
1851 | SvFLAGS(sv) |= mt; | |
1852 | ||
79072805 LW |
1853 | switch (mt) { |
1854 | case SVt_NULL: | |
cea2e8a9 | 1855 | Perl_croak(aTHX_ "Can't upgrade to undef"); |
79072805 | 1856 | case SVt_IV: |
339049b0 | 1857 | SvANY(sv) = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
45977657 | 1858 | SvIV_set(sv, iv); |
79072805 LW |
1859 | break; |
1860 | case SVt_NV: | |
1861 | SvANY(sv) = new_XNV(); | |
9d6ce603 | 1862 | SvNV_set(sv, nv); |
79072805 | 1863 | break; |
ed6116ce | 1864 | case SVt_RV: |
339049b0 | 1865 | SvANY(sv) = &sv->sv_u.svu_rv; |
b162af07 | 1866 | SvRV_set(sv, (SV*)pv); |
ed6116ce | 1867 | break; |
79072805 LW |
1868 | case SVt_PVHV: |
1869 | SvANY(sv) = new_XPVHV(); | |
bfcb3514 | 1870 | ((XPVHV*) SvANY(sv))->xhv_aux = 0; |
463ee0b2 LW |
1871 | HvFILL(sv) = 0; |
1872 | HvMAX(sv) = 0; | |
8aacddc1 | 1873 | HvTOTALKEYS(sv) = 0; |
bd4b1eb5 NC |
1874 | |
1875 | /* Fall through... */ | |
1876 | if (0) { | |
1877 | case SVt_PVAV: | |
1878 | SvANY(sv) = new_XPVAV(); | |
1879 | AvMAX(sv) = -1; | |
1880 | AvFILLp(sv) = -1; | |
1881 | AvALLOC(sv) = 0; | |
11ca45c0 | 1882 | AvREAL_only(sv); |
bd4b1eb5 NC |
1883 | } |
1884 | /* to here. */ | |
c2bfdfaf NC |
1885 | /* XXX? Only SVt_NULL is ever upgraded to AV or HV? */ |
1886 | assert(!pv); | |
8bd4d4c5 NC |
1887 | /* FIXME. Should be able to remove all this if()... if the above |
1888 | assertion is genuinely always true. */ | |
1889 | if(SvOOK(sv)) { | |
1890 | pv -= iv; | |
1891 | SvFLAGS(sv) &= ~SVf_OOK; | |
1892 | } | |
1893 | Safefree(pv); | |
bd4b1eb5 | 1894 | SvPV_set(sv, (char*)0); |
b162af07 SP |
1895 | SvMAGIC_set(sv, magic); |
1896 | SvSTASH_set(sv, stash); | |
79072805 | 1897 | break; |
bd4b1eb5 NC |
1898 | |
1899 | case SVt_PVIO: | |
1900 | SvANY(sv) = new_XPVIO(); | |
1901 | Zero(SvANY(sv), 1, XPVIO); | |
1902 | IoPAGE_LEN(sv) = 60; | |
1903 | goto set_magic_common; | |
1904 | case SVt_PVFM: | |
1905 | SvANY(sv) = new_XPVFM(); | |
1906 | Zero(SvANY(sv), 1, XPVFM); | |
1907 | goto set_magic_common; | |
1908 | case SVt_PVBM: | |
1909 | SvANY(sv) = new_XPVBM(); | |
1910 | BmRARE(sv) = 0; | |
1911 | BmUSEFUL(sv) = 0; | |
1912 | BmPREVIOUS(sv) = 0; | |
1913 | goto set_magic_common; | |
1914 | case SVt_PVGV: | |
1915 | SvANY(sv) = new_XPVGV(); | |
1916 | GvGP(sv) = 0; | |
1917 | GvNAME(sv) = 0; | |
1918 | GvNAMELEN(sv) = 0; | |
1919 | GvSTASH(sv) = 0; | |
1920 | GvFLAGS(sv) = 0; | |
1921 | goto set_magic_common; | |
79072805 LW |
1922 | case SVt_PVCV: |
1923 | SvANY(sv) = new_XPVCV(); | |
748a9306 | 1924 | Zero(SvANY(sv), 1, XPVCV); |
bd4b1eb5 NC |
1925 | goto set_magic_common; |
1926 | case SVt_PVLV: | |
1927 | SvANY(sv) = new_XPVLV(); | |
1928 | LvTARGOFF(sv) = 0; | |
1929 | LvTARGLEN(sv) = 0; | |
1930 | LvTARG(sv) = 0; | |
1931 | LvTYPE(sv) = 0; | |
93a17b20 | 1932 | GvGP(sv) = 0; |
79072805 LW |
1933 | GvNAME(sv) = 0; |
1934 | GvNAMELEN(sv) = 0; | |
1935 | GvSTASH(sv) = 0; | |
a5f75d66 | 1936 | GvFLAGS(sv) = 0; |
bd4b1eb5 NC |
1937 | /* Fall through. */ |
1938 | if (0) { | |
1939 | case SVt_PVMG: | |
1940 | SvANY(sv) = new_XPVMG(); | |
1941 | } | |
1942 | set_magic_common: | |
b162af07 SP |
1943 | SvMAGIC_set(sv, magic); |
1944 | SvSTASH_set(sv, stash); | |
bd4b1eb5 NC |
1945 | /* Fall through. */ |
1946 | if (0) { | |
1947 | case SVt_PVNV: | |
1948 | SvANY(sv) = new_XPVNV(); | |
1949 | } | |
9d6ce603 | 1950 | SvNV_set(sv, nv); |
bd4b1eb5 NC |
1951 | /* Fall through. */ |
1952 | if (0) { | |
1953 | case SVt_PVIV: | |
1954 | SvANY(sv) = new_XPVIV(); | |
1955 | if (SvNIOK(sv)) | |
1956 | (void)SvIOK_on(sv); | |
1957 | SvNOK_off(sv); | |
1958 | } | |
1959 | SvIV_set(sv, iv); | |
1960 | /* Fall through. */ | |
1961 | if (0) { | |
1962 | case SVt_PV: | |
1963 | SvANY(sv) = new_XPV(); | |
1964 | } | |
f880fe2f | 1965 | SvPV_set(sv, pv); |
b162af07 SP |
1966 | SvCUR_set(sv, cur); |
1967 | SvLEN_set(sv, len); | |
8990e307 LW |
1968 | break; |
1969 | } | |
79072805 LW |
1970 | return TRUE; |
1971 | } | |
1972 | ||
645c22ef DM |
1973 | /* |
1974 | =for apidoc sv_backoff | |
1975 | ||
1976 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
1977 | wrapper instead. | |
1978 | ||
1979 | =cut | |
1980 | */ | |
1981 | ||
79072805 | 1982 | int |
864dbfa3 | 1983 | Perl_sv_backoff(pTHX_ register SV *sv) |
79072805 LW |
1984 | { |
1985 | assert(SvOOK(sv)); | |
463ee0b2 LW |
1986 | if (SvIVX(sv)) { |
1987 | char *s = SvPVX(sv); | |
b162af07 | 1988 | SvLEN_set(sv, SvLEN(sv) + SvIVX(sv)); |
f880fe2f | 1989 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); |
79072805 | 1990 | SvIV_set(sv, 0); |
463ee0b2 | 1991 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
79072805 LW |
1992 | } |
1993 | SvFLAGS(sv) &= ~SVf_OOK; | |
a0d0e21e | 1994 | return 0; |
79072805 LW |
1995 | } |
1996 | ||
954c1994 GS |
1997 | /* |
1998 | =for apidoc sv_grow | |
1999 | ||
645c22ef DM |
2000 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
2001 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
2002 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
2003 | |
2004 | =cut | |
2005 | */ | |
2006 | ||
79072805 | 2007 | char * |
864dbfa3 | 2008 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) |
79072805 LW |
2009 | { |
2010 | register char *s; | |
2011 | ||
55497cff | 2012 | #ifdef HAS_64K_LIMIT |
79072805 | 2013 | if (newlen >= 0x10000) { |
1d7c1841 GS |
2014 | PerlIO_printf(Perl_debug_log, |
2015 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
79072805 LW |
2016 | my_exit(1); |
2017 | } | |
55497cff | 2018 | #endif /* HAS_64K_LIMIT */ |
a0d0e21e LW |
2019 | if (SvROK(sv)) |
2020 | sv_unref(sv); | |
79072805 LW |
2021 | if (SvTYPE(sv) < SVt_PV) { |
2022 | sv_upgrade(sv, SVt_PV); | |
463ee0b2 | 2023 | s = SvPVX(sv); |
79072805 LW |
2024 | } |
2025 | else if (SvOOK(sv)) { /* pv is offset? */ | |
2026 | sv_backoff(sv); | |
463ee0b2 | 2027 | s = SvPVX(sv); |
79072805 LW |
2028 | if (newlen > SvLEN(sv)) |
2029 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
c6f8c383 GA |
2030 | #ifdef HAS_64K_LIMIT |
2031 | if (newlen >= 0x10000) | |
2032 | newlen = 0xFFFF; | |
2033 | #endif | |
79072805 | 2034 | } |
bc44a8a2 | 2035 | else |
463ee0b2 | 2036 | s = SvPVX(sv); |
54f0641b | 2037 | |
79072805 | 2038 | if (newlen > SvLEN(sv)) { /* need more room? */ |
8d6dde3e | 2039 | if (SvLEN(sv) && s) { |
7bab3ede | 2040 | #ifdef MYMALLOC |
a3b680e6 | 2041 | const STRLEN l = malloced_size((void*)SvPVX(sv)); |
8d6dde3e IZ |
2042 | if (newlen <= l) { |
2043 | SvLEN_set(sv, l); | |
2044 | return s; | |
2045 | } else | |
c70c8a0a | 2046 | #endif |
79072805 | 2047 | Renew(s,newlen,char); |
8d6dde3e | 2048 | } |
bfed75c6 | 2049 | else { |
4e83176d | 2050 | New(703, s, newlen, char); |
40565179 | 2051 | if (SvPVX(sv) && SvCUR(sv)) { |
54f0641b | 2052 | Move(SvPVX(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); |
40565179 | 2053 | } |
4e83176d | 2054 | } |
79072805 | 2055 | SvPV_set(sv, s); |
e1ec3a88 | 2056 | SvLEN_set(sv, newlen); |
79072805 LW |
2057 | } |
2058 | return s; | |
2059 | } | |
2060 | ||
954c1994 GS |
2061 | /* |
2062 | =for apidoc sv_setiv | |
2063 | ||
645c22ef DM |
2064 | Copies an integer into the given SV, upgrading first if necessary. |
2065 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
2066 | |
2067 | =cut | |
2068 | */ | |
2069 | ||
79072805 | 2070 | void |
864dbfa3 | 2071 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) |
79072805 | 2072 | { |
765f542d | 2073 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 LW |
2074 | switch (SvTYPE(sv)) { |
2075 | case SVt_NULL: | |
79072805 | 2076 | sv_upgrade(sv, SVt_IV); |
463ee0b2 LW |
2077 | break; |
2078 | case SVt_NV: | |
2079 | sv_upgrade(sv, SVt_PVNV); | |
2080 | break; | |
ed6116ce | 2081 | case SVt_RV: |
463ee0b2 | 2082 | case SVt_PV: |
79072805 | 2083 | sv_upgrade(sv, SVt_PVIV); |
463ee0b2 | 2084 | break; |
a0d0e21e LW |
2085 | |
2086 | case SVt_PVGV: | |
a0d0e21e LW |
2087 | case SVt_PVAV: |
2088 | case SVt_PVHV: | |
2089 | case SVt_PVCV: | |
2090 | case SVt_PVFM: | |
2091 | case SVt_PVIO: | |
411caa50 | 2092 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), |
53e06cf0 | 2093 | OP_DESC(PL_op)); |
463ee0b2 | 2094 | } |
a0d0e21e | 2095 | (void)SvIOK_only(sv); /* validate number */ |
45977657 | 2096 | SvIV_set(sv, i); |
463ee0b2 | 2097 | SvTAINT(sv); |
79072805 LW |
2098 | } |
2099 | ||
954c1994 GS |
2100 | /* |
2101 | =for apidoc sv_setiv_mg | |
2102 | ||
2103 | Like C<sv_setiv>, but also handles 'set' magic. | |
2104 | ||
2105 | =cut | |
2106 | */ | |
2107 | ||
79072805 | 2108 | void |
864dbfa3 | 2109 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) |
ef50df4b GS |
2110 | { |
2111 | sv_setiv(sv,i); | |
2112 | SvSETMAGIC(sv); | |
2113 | } | |
2114 | ||
954c1994 GS |
2115 | /* |
2116 | =for apidoc sv_setuv | |
2117 | ||
645c22ef DM |
2118 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
2119 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
2120 | |
2121 | =cut | |
2122 | */ | |
2123 | ||
ef50df4b | 2124 | void |
864dbfa3 | 2125 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) |
55497cff | 2126 | { |
55ada374 NC |
2127 | /* With these two if statements: |
2128 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 2129 | |
55ada374 NC |
2130 | without |
2131 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 2132 | |
55ada374 NC |
2133 | If you wish to remove them, please benchmark to see what the effect is |
2134 | */ | |
28e5dec8 JH |
2135 | if (u <= (UV)IV_MAX) { |
2136 | sv_setiv(sv, (IV)u); | |
2137 | return; | |
2138 | } | |
25da4f38 IZ |
2139 | sv_setiv(sv, 0); |
2140 | SvIsUV_on(sv); | |
607fa7f2 | 2141 | SvUV_set(sv, u); |
55497cff | 2142 | } |
2143 | ||
954c1994 GS |
2144 | /* |
2145 | =for apidoc sv_setuv_mg | |
2146 | ||
2147 | Like C<sv_setuv>, but also handles 'set' magic. | |
2148 | ||
2149 | =cut | |
2150 | */ | |
2151 | ||
55497cff | 2152 | void |
864dbfa3 | 2153 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) |
ef50df4b | 2154 | { |
55ada374 NC |
2155 | /* With these two if statements: |
2156 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 2157 | |
55ada374 NC |
2158 | without |
2159 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 2160 | |
55ada374 NC |
2161 | If you wish to remove them, please benchmark to see what the effect is |
2162 | */ | |
28e5dec8 JH |
2163 | if (u <= (UV)IV_MAX) { |
2164 | sv_setiv(sv, (IV)u); | |
2165 | } else { | |
2166 | sv_setiv(sv, 0); | |
2167 | SvIsUV_on(sv); | |
2168 | sv_setuv(sv,u); | |
2169 | } | |
ef50df4b GS |
2170 | SvSETMAGIC(sv); |
2171 | } | |
2172 | ||
954c1994 GS |
2173 | /* |
2174 | =for apidoc sv_setnv | |
2175 | ||
645c22ef DM |
2176 | Copies a double into the given SV, upgrading first if necessary. |
2177 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
2178 | |
2179 | =cut | |
2180 | */ | |
2181 | ||
ef50df4b | 2182 | void |
65202027 | 2183 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 2184 | { |
765f542d | 2185 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
a0d0e21e LW |
2186 | switch (SvTYPE(sv)) { |
2187 | case SVt_NULL: | |
2188 | case SVt_IV: | |
79072805 | 2189 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2190 | break; |
a0d0e21e LW |
2191 | case SVt_RV: |
2192 | case SVt_PV: | |
2193 | case SVt_PVIV: | |
79072805 | 2194 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e | 2195 | break; |
827b7e14 | 2196 | |
a0d0e21e | 2197 | case SVt_PVGV: |
a0d0e21e LW |
2198 | case SVt_PVAV: |
2199 | case SVt_PVHV: | |
2200 | case SVt_PVCV: | |
2201 | case SVt_PVFM: | |
2202 | case SVt_PVIO: | |
411caa50 | 2203 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), |
53e06cf0 | 2204 | OP_NAME(PL_op)); |
79072805 | 2205 | } |
9d6ce603 | 2206 | SvNV_set(sv, num); |
a0d0e21e | 2207 | (void)SvNOK_only(sv); /* validate number */ |
463ee0b2 | 2208 | SvTAINT(sv); |
79072805 LW |
2209 | } |
2210 | ||
954c1994 GS |
2211 | /* |
2212 | =for apidoc sv_setnv_mg | |
2213 | ||
2214 | Like C<sv_setnv>, but also handles 'set' magic. | |
2215 | ||
2216 | =cut | |
2217 | */ | |
2218 | ||
ef50df4b | 2219 | void |
65202027 | 2220 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) |
ef50df4b GS |
2221 | { |
2222 | sv_setnv(sv,num); | |
2223 | SvSETMAGIC(sv); | |
2224 | } | |
2225 | ||
645c22ef DM |
2226 | /* Print an "isn't numeric" warning, using a cleaned-up, |
2227 | * printable version of the offending string | |
2228 | */ | |
2229 | ||
76e3520e | 2230 | STATIC void |
cea2e8a9 | 2231 | S_not_a_number(pTHX_ SV *sv) |
a0d0e21e | 2232 | { |
94463019 JH |
2233 | SV *dsv; |
2234 | char tmpbuf[64]; | |
2235 | char *pv; | |
2236 | ||
2237 | if (DO_UTF8(sv)) { | |
2238 | dsv = sv_2mortal(newSVpv("", 0)); | |
2239 | pv = sv_uni_display(dsv, sv, 10, 0); | |
2240 | } else { | |
2241 | char *d = tmpbuf; | |
2242 | char *limit = tmpbuf + sizeof(tmpbuf) - 8; | |
2243 | /* each *s can expand to 4 chars + "...\0", | |
2244 | i.e. need room for 8 chars */ | |
ecdeb87c | 2245 | |
94463019 JH |
2246 | char *s, *end; |
2247 | for (s = SvPVX(sv), end = s + SvCUR(sv); s < end && d < limit; s++) { | |
2248 | int ch = *s & 0xFF; | |
2249 | if (ch & 128 && !isPRINT_LC(ch)) { | |
2250 | *d++ = 'M'; | |
2251 | *d++ = '-'; | |
2252 | ch &= 127; | |
2253 | } | |
2254 | if (ch == '\n') { | |
2255 | *d++ = '\\'; | |
2256 | *d++ = 'n'; | |
2257 | } | |
2258 | else if (ch == '\r') { | |
2259 | *d++ = '\\'; | |
2260 | *d++ = 'r'; | |
2261 | } | |
2262 | else if (ch == '\f') { | |
2263 | *d++ = '\\'; | |
2264 | *d++ = 'f'; | |
2265 | } | |
2266 | else if (ch == '\\') { | |
2267 | *d++ = '\\'; | |
2268 | *d++ = '\\'; | |
2269 | } | |
2270 | else if (ch == '\0') { | |
2271 | *d++ = '\\'; | |
2272 | *d++ = '0'; | |
2273 | } | |
2274 | else if (isPRINT_LC(ch)) | |
2275 | *d++ = ch; | |
2276 | else { | |
2277 | *d++ = '^'; | |
2278 | *d++ = toCTRL(ch); | |
2279 | } | |
2280 | } | |
2281 | if (s < end) { | |
2282 | *d++ = '.'; | |
2283 | *d++ = '.'; | |
2284 | *d++ = '.'; | |
2285 | } | |
2286 | *d = '\0'; | |
2287 | pv = tmpbuf; | |
a0d0e21e | 2288 | } |
a0d0e21e | 2289 | |
533c011a | 2290 | if (PL_op) |
9014280d | 2291 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
2292 | "Argument \"%s\" isn't numeric in %s", pv, |
2293 | OP_DESC(PL_op)); | |
a0d0e21e | 2294 | else |
9014280d | 2295 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 2296 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
2297 | } |
2298 | ||
c2988b20 NC |
2299 | /* |
2300 | =for apidoc looks_like_number | |
2301 | ||
645c22ef DM |
2302 | Test if the content of an SV looks like a number (or is a number). |
2303 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
2304 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
2305 | |
2306 | =cut | |
2307 | */ | |
2308 | ||
2309 | I32 | |
2310 | Perl_looks_like_number(pTHX_ SV *sv) | |
2311 | { | |
a3b680e6 | 2312 | register const char *sbegin; |
c2988b20 NC |
2313 | STRLEN len; |
2314 | ||
2315 | if (SvPOK(sv)) { | |
2316 | sbegin = SvPVX(sv); | |
2317 | len = SvCUR(sv); | |
2318 | } | |
2319 | else if (SvPOKp(sv)) | |
2320 | sbegin = SvPV(sv, len); | |
2321 | else | |
e0ab1c0e | 2322 | return SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK); |
c2988b20 NC |
2323 | return grok_number(sbegin, len, NULL); |
2324 | } | |
25da4f38 IZ |
2325 | |
2326 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
2327 | until proven guilty, assume that things are not that bad... */ | |
2328 | ||
645c22ef DM |
2329 | /* |
2330 | NV_PRESERVES_UV: | |
2331 | ||
2332 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
2333 | an IV (an assumption perl has been based on to date) it becomes necessary |
2334 | to remove the assumption that the NV always carries enough precision to | |
2335 | recreate the IV whenever needed, and that the NV is the canonical form. | |
2336 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 2337 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
2338 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
2339 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
2340 | conversion where precision was lost and IV/UV/NV slots that have a | |
2341 | valid conversion which has lost no precision | |
645c22ef | 2342 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
2343 | would lose precision, the precise conversion (or differently |
2344 | imprecise conversion) is also performed and cached, to prevent | |
2345 | requests for different numeric formats on the same SV causing | |
2346 | lossy conversion chains. (lossless conversion chains are perfectly | |
2347 | acceptable (still)) | |
2348 | ||
2349 | ||
2350 | flags are used: | |
2351 | SvIOKp is true if the IV slot contains a valid value | |
2352 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
2353 | SvNOKp is true if the NV slot contains a valid value | |
2354 | SvNOK is true only if the NV value is accurate | |
2355 | ||
2356 | so | |
645c22ef | 2357 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
2358 | IV(or UV) would lose accuracy over a direct conversion from PV to |
2359 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
2360 | SV as IOK NOKp (ie not NOK). | |
2361 | ||
645c22ef | 2362 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
2363 | NV would lose accuracy over a direct conversion from PV to NV. If it |
2364 | would, cache both conversions, flag similarly. | |
2365 | ||
2366 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
2367 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
2368 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
2369 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 2370 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 2371 | |
645c22ef DM |
2372 | The benefit of this is that operations such as pp_add know that if |
2373 | SvIOK is true for both left and right operands, then integer addition | |
2374 | can be used instead of floating point (for cases where the result won't | |
2375 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
2376 | loss of precision compared with integer addition. |
2377 | ||
2378 | * making IV and NV equal status should make maths accurate on 64 bit | |
2379 | platforms | |
2380 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 2381 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
2382 | looking for SvIOK and checking for overflow will not outweigh the |
2383 | fp to integer speedup) | |
2384 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
2385 | values, as the change from SvIOK to SvIOKp will cause a call into | |
2386 | sv_2iv each time rather than a macro access direct to the IV slot | |
2387 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 2388 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
2389 | |
2390 | #################################################################### | |
645c22ef DM |
2391 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
2392 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
2393 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
2394 | #################################################################### |
2395 | ||
645c22ef | 2396 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
2397 | performance ratio. |
2398 | */ | |
2399 | ||
2400 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
2401 | # define IS_NUMBER_UNDERFLOW_IV 1 |
2402 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
2403 | # define IS_NUMBER_IV_AND_UV 2 | |
2404 | # define IS_NUMBER_OVERFLOW_IV 4 | |
2405 | # define IS_NUMBER_OVERFLOW_UV 5 | |
2406 | ||
2407 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
2408 | |
2409 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
2410 | STATIC int | |
645c22ef | 2411 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 2412 | { |
1779d84d | 2413 | 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 |
2414 | if (SvNVX(sv) < (NV)IV_MIN) { |
2415 | (void)SvIOKp_on(sv); | |
2416 | (void)SvNOK_on(sv); | |
45977657 | 2417 | SvIV_set(sv, IV_MIN); |
28e5dec8 JH |
2418 | return IS_NUMBER_UNDERFLOW_IV; |
2419 | } | |
2420 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2421 | (void)SvIOKp_on(sv); | |
2422 | (void)SvNOK_on(sv); | |
2423 | SvIsUV_on(sv); | |
607fa7f2 | 2424 | SvUV_set(sv, UV_MAX); |
28e5dec8 JH |
2425 | return IS_NUMBER_OVERFLOW_UV; |
2426 | } | |
c2988b20 NC |
2427 | (void)SvIOKp_on(sv); |
2428 | (void)SvNOK_on(sv); | |
2429 | /* Can't use strtol etc to convert this string. (See truth table in | |
2430 | sv_2iv */ | |
2431 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
45977657 | 2432 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2433 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2434 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
2435 | } else { | |
2436 | /* Integer is imprecise. NOK, IOKp */ | |
2437 | } | |
2438 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
2439 | } | |
2440 | SvIsUV_on(sv); | |
607fa7f2 | 2441 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2442 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { |
2443 | if (SvUVX(sv) == UV_MAX) { | |
2444 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
2445 | possibly be preserved by NV. Hence, it must be overflow. | |
2446 | NOK, IOKp */ | |
2447 | return IS_NUMBER_OVERFLOW_UV; | |
2448 | } | |
2449 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
2450 | } else { | |
2451 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 2452 | } |
c2988b20 | 2453 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 2454 | } |
645c22ef DM |
2455 | #endif /* !NV_PRESERVES_UV*/ |
2456 | ||
891f9566 YST |
2457 | /* sv_2iv() is now a macro using Perl_sv_2iv_flags(); |
2458 | * this function provided for binary compatibility only | |
2459 | */ | |
2460 | ||
2461 | IV | |
2462 | Perl_sv_2iv(pTHX_ register SV *sv) | |
2463 | { | |
2464 | return sv_2iv_flags(sv, SV_GMAGIC); | |
2465 | } | |
2466 | ||
645c22ef | 2467 | /* |
891f9566 | 2468 | =for apidoc sv_2iv_flags |
645c22ef | 2469 | |
891f9566 YST |
2470 | Return the integer value of an SV, doing any necessary string |
2471 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. | |
2472 | Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
645c22ef DM |
2473 | |
2474 | =cut | |
2475 | */ | |
28e5dec8 | 2476 | |
a0d0e21e | 2477 | IV |
891f9566 | 2478 | Perl_sv_2iv_flags(pTHX_ register SV *sv, I32 flags) |
79072805 LW |
2479 | { |
2480 | if (!sv) | |
2481 | return 0; | |
8990e307 | 2482 | if (SvGMAGICAL(sv)) { |
891f9566 YST |
2483 | if (flags & SV_GMAGIC) |
2484 | mg_get(sv); | |
463ee0b2 LW |
2485 | if (SvIOKp(sv)) |
2486 | return SvIVX(sv); | |
748a9306 | 2487 | if (SvNOKp(sv)) { |
25da4f38 | 2488 | return I_V(SvNVX(sv)); |
748a9306 | 2489 | } |
36477c24 | 2490 | if (SvPOKp(sv) && SvLEN(sv)) |
2491 | return asIV(sv); | |
3fe9a6f1 | 2492 | if (!SvROK(sv)) { |
d008e5eb | 2493 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2494 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2495 | report_uninit(sv); |
c6ee37c5 | 2496 | } |
36477c24 | 2497 | return 0; |
3fe9a6f1 | 2498 | } |
463ee0b2 | 2499 | } |
ed6116ce | 2500 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2501 | if (SvROK(sv)) { |
a0d0e21e | 2502 | SV* tmpstr; |
1554e226 | 2503 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2504 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2505 | return SvIV(tmpstr); |
56431972 | 2506 | return PTR2IV(SvRV(sv)); |
a0d0e21e | 2507 | } |
765f542d NC |
2508 | if (SvIsCOW(sv)) { |
2509 | sv_force_normal_flags(sv, 0); | |
47deb5e7 | 2510 | } |
0336b60e | 2511 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2512 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2513 | report_uninit(sv); |
ed6116ce LW |
2514 | return 0; |
2515 | } | |
79072805 | 2516 | } |
25da4f38 IZ |
2517 | if (SvIOKp(sv)) { |
2518 | if (SvIsUV(sv)) { | |
2519 | return (IV)(SvUVX(sv)); | |
2520 | } | |
2521 | else { | |
2522 | return SvIVX(sv); | |
2523 | } | |
463ee0b2 | 2524 | } |
748a9306 | 2525 | if (SvNOKp(sv)) { |
28e5dec8 JH |
2526 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2527 | * without also getting a cached IV/UV from it at the same time | |
2528 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2529 | * IV or UV at same time to avoid this. NWC */ | |
25da4f38 IZ |
2530 | |
2531 | if (SvTYPE(sv) == SVt_NV) | |
2532 | sv_upgrade(sv, SVt_PVNV); | |
2533 | ||
28e5dec8 JH |
2534 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
2535 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
2536 | certainly cast into the IV range at IV_MAX, whereas the correct | |
2537 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
2538 | cases go to UV */ | |
2539 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2540 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2541 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2542 | #ifndef NV_PRESERVES_UV | |
2543 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2544 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2545 | /* Don't flag it as "accurately an integer" if the number | |
2546 | came from a (by definition imprecise) NV operation, and | |
2547 | we're outside the range of NV integer precision */ | |
2548 | #endif | |
2549 | ) { | |
2550 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2551 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2552 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2553 | PTR2UV(sv), |
2554 | SvNVX(sv), | |
2555 | SvIVX(sv))); | |
2556 | ||
2557 | } else { | |
2558 | /* IV not precise. No need to convert from PV, as NV | |
2559 | conversion would already have cached IV if it detected | |
2560 | that PV->IV would be better than PV->NV->IV | |
2561 | flags already correct - don't set public IOK. */ | |
2562 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2563 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2564 | PTR2UV(sv), |
2565 | SvNVX(sv), | |
2566 | SvIVX(sv))); | |
2567 | } | |
2568 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2569 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2570 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2571 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2572 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2573 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2574 | Hopefully for 2s complement IV_MIN is something like | |
2575 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2576 | } |
25da4f38 | 2577 | else { |
607fa7f2 | 2578 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2579 | if ( |
2580 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2581 | #ifndef NV_PRESERVES_UV | |
2582 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2583 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2584 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2585 | /* Don't flag it as "accurately an integer" if the number | |
2586 | came from a (by definition imprecise) NV operation, and | |
2587 | we're outside the range of NV integer precision */ | |
2588 | #endif | |
2589 | ) | |
2590 | SvIOK_on(sv); | |
25da4f38 IZ |
2591 | SvIsUV_on(sv); |
2592 | ret_iv_max: | |
1c846c1f | 2593 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 2594 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 2595 | PTR2UV(sv), |
57def98f JH |
2596 | SvUVX(sv), |
2597 | SvUVX(sv))); | |
25da4f38 IZ |
2598 | return (IV)SvUVX(sv); |
2599 | } | |
748a9306 LW |
2600 | } |
2601 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 2602 | UV value; |
504618e9 | 2603 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
25da4f38 IZ |
2604 | /* We want to avoid a possible problem when we cache an IV which |
2605 | may be later translated to an NV, and the resulting NV is not | |
c2988b20 NC |
2606 | the same as the direct translation of the initial string |
2607 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
2608 | be careful to ensure that the value with the .456 is around if the | |
2609 | NV value is requested in the future). | |
1c846c1f | 2610 | |
25da4f38 IZ |
2611 | This means that if we cache such an IV, we need to cache the |
2612 | NV as well. Moreover, we trade speed for space, and do not | |
28e5dec8 | 2613 | cache the NV if we are sure it's not needed. |
25da4f38 | 2614 | */ |
16b7a9a4 | 2615 | |
c2988b20 NC |
2616 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2617 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2618 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2619 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2620 | if (SvTYPE(sv) < SVt_PVIV) |
2621 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2622 | (void)SvIOK_on(sv); |
c2988b20 NC |
2623 | } else if (SvTYPE(sv) < SVt_PVNV) |
2624 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2625 | |
c2988b20 NC |
2626 | /* If NV preserves UV then we only use the UV value if we know that |
2627 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2628 | then the value returned may have more precision than atof() will | |
2629 | return, even though value isn't perfectly accurate. */ | |
2630 | if ((numtype & (IS_NUMBER_IN_UV | |
2631 | #ifdef NV_PRESERVES_UV | |
2632 | | IS_NUMBER_NOT_INT | |
2633 | #endif | |
2634 | )) == IS_NUMBER_IN_UV) { | |
2635 | /* This won't turn off the public IOK flag if it was set above */ | |
2636 | (void)SvIOKp_on(sv); | |
2637 | ||
2638 | if (!(numtype & IS_NUMBER_NEG)) { | |
2639 | /* positive */; | |
2640 | if (value <= (UV)IV_MAX) { | |
45977657 | 2641 | SvIV_set(sv, (IV)value); |
c2988b20 | 2642 | } else { |
607fa7f2 | 2643 | SvUV_set(sv, value); |
c2988b20 NC |
2644 | SvIsUV_on(sv); |
2645 | } | |
2646 | } else { | |
2647 | /* 2s complement assumption */ | |
2648 | if (value <= (UV)IV_MIN) { | |
45977657 | 2649 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2650 | } else { |
2651 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2652 | I'm assuming it will be rare. */ |
c2988b20 NC |
2653 | if (SvTYPE(sv) < SVt_PVNV) |
2654 | sv_upgrade(sv, SVt_PVNV); | |
2655 | SvNOK_on(sv); | |
2656 | SvIOK_off(sv); | |
2657 | SvIOKp_on(sv); | |
9d6ce603 | 2658 | SvNV_set(sv, -(NV)value); |
45977657 | 2659 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2660 | } |
2661 | } | |
2662 | } | |
2663 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2664 | will be in the previous block to set the IV slot, and the next | |
2665 | block to set the NV slot. So no else here. */ | |
2666 | ||
2667 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2668 | != IS_NUMBER_IN_UV) { | |
2669 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
9d6ce603 | 2670 | SvNV_set(sv, Atof(SvPVX(sv))); |
28e5dec8 | 2671 | |
c2988b20 NC |
2672 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2673 | not_a_number(sv); | |
28e5dec8 | 2674 | |
65202027 | 2675 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2676 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2677 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2678 | #else |
1779d84d | 2679 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2680 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2681 | #endif |
28e5dec8 JH |
2682 | |
2683 | ||
2684 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2685 | (void)SvIOKp_on(sv); |
2686 | (void)SvNOK_on(sv); | |
2687 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2688 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2689 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2690 | SvIOK_on(sv); | |
28e5dec8 | 2691 | } else { |
c2988b20 NC |
2692 | /* Integer is imprecise. NOK, IOKp */ |
2693 | } | |
2694 | /* UV will not work better than IV */ | |
2695 | } else { | |
2696 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2697 | SvIsUV_on(sv); | |
2698 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 2699 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
2700 | SvIsUV_on(sv); |
2701 | } else { | |
607fa7f2 | 2702 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2703 | /* 0xFFFFFFFFFFFFFFFF not an issue in here */ |
2704 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2705 | SvIOK_on(sv); | |
28e5dec8 JH |
2706 | SvIsUV_on(sv); |
2707 | } else { | |
c2988b20 NC |
2708 | /* Integer is imprecise. NOK, IOKp, is UV */ |
2709 | SvIsUV_on(sv); | |
28e5dec8 | 2710 | } |
28e5dec8 | 2711 | } |
c2988b20 NC |
2712 | goto ret_iv_max; |
2713 | } | |
28e5dec8 | 2714 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2715 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2716 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2717 | /* The IV slot will have been set from value returned by | |
2718 | grok_number above. The NV slot has just been set using | |
2719 | Atof. */ | |
560b0c46 | 2720 | SvNOK_on(sv); |
c2988b20 NC |
2721 | assert (SvIOKp(sv)); |
2722 | } else { | |
2723 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2724 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2725 | /* Small enough to preserve all bits. */ | |
2726 | (void)SvIOKp_on(sv); | |
2727 | SvNOK_on(sv); | |
45977657 | 2728 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2729 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
2730 | SvIOK_on(sv); | |
2731 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2732 | this NV is in the preserved range, therefore: */ | |
2733 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2734 | < (UV)IV_MAX)) { | |
32fdb065 | 2735 | 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 |
2736 | } |
2737 | } else { | |
2738 | /* IN_UV NOT_INT | |
2739 | 0 0 already failed to read UV. | |
2740 | 0 1 already failed to read UV. | |
2741 | 1 0 you won't get here in this case. IV/UV | |
2742 | slot set, public IOK, Atof() unneeded. | |
2743 | 1 1 already read UV. | |
2744 | so there's no point in sv_2iuv_non_preserve() attempting | |
2745 | to use atol, strtol, strtoul etc. */ | |
2746 | if (sv_2iuv_non_preserve (sv, numtype) | |
2747 | >= IS_NUMBER_OVERFLOW_IV) | |
2748 | goto ret_iv_max; | |
2749 | } | |
2750 | } | |
28e5dec8 | 2751 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2752 | } |
28e5dec8 | 2753 | } else { |
599cee73 | 2754 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 2755 | report_uninit(sv); |
25da4f38 IZ |
2756 | if (SvTYPE(sv) < SVt_IV) |
2757 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2758 | sv_upgrade(sv, SVt_IV); | |
a0d0e21e | 2759 | return 0; |
79072805 | 2760 | } |
1d7c1841 GS |
2761 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2762 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2763 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2764 | } |
2765 | ||
891f9566 YST |
2766 | /* sv_2uv() is now a macro using Perl_sv_2uv_flags(); |
2767 | * this function provided for binary compatibility only | |
2768 | */ | |
2769 | ||
2770 | UV | |
2771 | Perl_sv_2uv(pTHX_ register SV *sv) | |
2772 | { | |
2773 | return sv_2uv_flags(sv, SV_GMAGIC); | |
2774 | } | |
2775 | ||
645c22ef | 2776 | /* |
891f9566 | 2777 | =for apidoc sv_2uv_flags |
645c22ef DM |
2778 | |
2779 | Return the unsigned integer value of an SV, doing any necessary string | |
891f9566 YST |
2780 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. |
2781 | Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros. | |
645c22ef DM |
2782 | |
2783 | =cut | |
2784 | */ | |
2785 | ||
ff68c719 | 2786 | UV |
891f9566 | 2787 | Perl_sv_2uv_flags(pTHX_ register SV *sv, I32 flags) |
ff68c719 | 2788 | { |
2789 | if (!sv) | |
2790 | return 0; | |
2791 | if (SvGMAGICAL(sv)) { | |
891f9566 YST |
2792 | if (flags & SV_GMAGIC) |
2793 | mg_get(sv); | |
ff68c719 | 2794 | if (SvIOKp(sv)) |
2795 | return SvUVX(sv); | |
2796 | if (SvNOKp(sv)) | |
2797 | return U_V(SvNVX(sv)); | |
36477c24 | 2798 | if (SvPOKp(sv) && SvLEN(sv)) |
2799 | return asUV(sv); | |
3fe9a6f1 | 2800 | if (!SvROK(sv)) { |
d008e5eb | 2801 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2802 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2803 | report_uninit(sv); |
c6ee37c5 | 2804 | } |
36477c24 | 2805 | return 0; |
3fe9a6f1 | 2806 | } |
ff68c719 | 2807 | } |
2808 | if (SvTHINKFIRST(sv)) { | |
2809 | if (SvROK(sv)) { | |
ff68c719 | 2810 | SV* tmpstr; |
1554e226 | 2811 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2812 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2813 | return SvUV(tmpstr); |
56431972 | 2814 | return PTR2UV(SvRV(sv)); |
ff68c719 | 2815 | } |
765f542d NC |
2816 | if (SvIsCOW(sv)) { |
2817 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2818 | } |
0336b60e | 2819 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2820 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2821 | report_uninit(sv); |
ff68c719 | 2822 | return 0; |
2823 | } | |
2824 | } | |
25da4f38 IZ |
2825 | if (SvIOKp(sv)) { |
2826 | if (SvIsUV(sv)) { | |
2827 | return SvUVX(sv); | |
2828 | } | |
2829 | else { | |
2830 | return (UV)SvIVX(sv); | |
2831 | } | |
ff68c719 | 2832 | } |
2833 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
2834 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2835 | * without also getting a cached IV/UV from it at the same time | |
2836 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2837 | * IV or UV at same time to avoid this. */ | |
2838 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
2839 | ||
25da4f38 IZ |
2840 | if (SvTYPE(sv) == SVt_NV) |
2841 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 JH |
2842 | |
2843 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ | |
2844 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2845 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2846 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2847 | #ifndef NV_PRESERVES_UV | |
2848 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2849 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2850 | /* Don't flag it as "accurately an integer" if the number | |
2851 | came from a (by definition imprecise) NV operation, and | |
2852 | we're outside the range of NV integer precision */ | |
2853 | #endif | |
2854 | ) { | |
2855 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2856 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2857 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2858 | PTR2UV(sv), |
2859 | SvNVX(sv), | |
2860 | SvIVX(sv))); | |
2861 | ||
2862 | } else { | |
2863 | /* IV not precise. No need to convert from PV, as NV | |
2864 | conversion would already have cached IV if it detected | |
2865 | that PV->IV would be better than PV->NV->IV | |
2866 | flags already correct - don't set public IOK. */ | |
2867 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2868 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2869 | PTR2UV(sv), |
2870 | SvNVX(sv), | |
2871 | SvIVX(sv))); | |
2872 | } | |
2873 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2874 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2875 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2876 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2877 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2878 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2879 | Hopefully for 2s complement IV_MIN is something like | |
2880 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2881 | } |
28e5dec8 | 2882 | else { |
607fa7f2 | 2883 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2884 | if ( |
2885 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2886 | #ifndef NV_PRESERVES_UV | |
2887 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2888 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2889 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2890 | /* Don't flag it as "accurately an integer" if the number | |
2891 | came from a (by definition imprecise) NV operation, and | |
2892 | we're outside the range of NV integer precision */ | |
2893 | #endif | |
2894 | ) | |
2895 | SvIOK_on(sv); | |
2896 | SvIsUV_on(sv); | |
1c846c1f | 2897 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
28e5dec8 | 2898 | "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n", |
57def98f | 2899 | PTR2UV(sv), |
28e5dec8 JH |
2900 | SvUVX(sv), |
2901 | SvUVX(sv))); | |
25da4f38 | 2902 | } |
ff68c719 | 2903 | } |
2904 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 2905 | UV value; |
504618e9 | 2906 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
25da4f38 IZ |
2907 | |
2908 | /* We want to avoid a possible problem when we cache a UV which | |
2909 | may be later translated to an NV, and the resulting NV is not | |
2910 | the translation of the initial data. | |
1c846c1f | 2911 | |
25da4f38 IZ |
2912 | This means that if we cache such a UV, we need to cache the |
2913 | NV as well. Moreover, we trade speed for space, and do not | |
2914 | cache the NV if not needed. | |
2915 | */ | |
16b7a9a4 | 2916 | |
c2988b20 NC |
2917 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2918 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2919 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2920 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 | 2921 | if (SvTYPE(sv) < SVt_PVIV) |
f7bbb42a JH |
2922 | sv_upgrade(sv, SVt_PVIV); |
2923 | (void)SvIOK_on(sv); | |
c2988b20 NC |
2924 | } else if (SvTYPE(sv) < SVt_PVNV) |
2925 | sv_upgrade(sv, SVt_PVNV); | |
d460ef45 | 2926 | |
c2988b20 NC |
2927 | /* If NV preserves UV then we only use the UV value if we know that |
2928 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2929 | then the value returned may have more precision than atof() will | |
2930 | return, even though it isn't accurate. */ | |
2931 | if ((numtype & (IS_NUMBER_IN_UV | |
2932 | #ifdef NV_PRESERVES_UV | |
2933 | | IS_NUMBER_NOT_INT | |
2934 | #endif | |
2935 | )) == IS_NUMBER_IN_UV) { | |
2936 | /* This won't turn off the public IOK flag if it was set above */ | |
2937 | (void)SvIOKp_on(sv); | |
2938 | ||
2939 | if (!(numtype & IS_NUMBER_NEG)) { | |
2940 | /* positive */; | |
2941 | if (value <= (UV)IV_MAX) { | |
45977657 | 2942 | SvIV_set(sv, (IV)value); |
28e5dec8 JH |
2943 | } else { |
2944 | /* it didn't overflow, and it was positive. */ | |
607fa7f2 | 2945 | SvUV_set(sv, value); |
28e5dec8 JH |
2946 | SvIsUV_on(sv); |
2947 | } | |
c2988b20 NC |
2948 | } else { |
2949 | /* 2s complement assumption */ | |
2950 | if (value <= (UV)IV_MIN) { | |
45977657 | 2951 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2952 | } else { |
2953 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2954 | I'm assuming it will be rare. */ |
c2988b20 NC |
2955 | if (SvTYPE(sv) < SVt_PVNV) |
2956 | sv_upgrade(sv, SVt_PVNV); | |
2957 | SvNOK_on(sv); | |
2958 | SvIOK_off(sv); | |
2959 | SvIOKp_on(sv); | |
9d6ce603 | 2960 | SvNV_set(sv, -(NV)value); |
45977657 | 2961 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2962 | } |
2963 | } | |
2964 | } | |
2965 | ||
2966 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2967 | != IS_NUMBER_IN_UV) { | |
2968 | /* It wasn't an integer, or it overflowed the UV. */ | |
9d6ce603 | 2969 | SvNV_set(sv, Atof(SvPVX(sv))); |
28e5dec8 | 2970 | |
c2988b20 | 2971 | if (! numtype && ckWARN(WARN_NUMERIC)) |
28e5dec8 JH |
2972 | not_a_number(sv); |
2973 | ||
2974 | #if defined(USE_LONG_DOUBLE) | |
c2988b20 NC |
2975 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n", |
2976 | PTR2UV(sv), SvNVX(sv))); | |
28e5dec8 | 2977 | #else |
1779d84d | 2978 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"NVgf")\n", |
c2988b20 | 2979 | PTR2UV(sv), SvNVX(sv))); |
28e5dec8 JH |
2980 | #endif |
2981 | ||
2982 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2983 | (void)SvIOKp_on(sv); |
2984 | (void)SvNOK_on(sv); | |
2985 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2986 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2987 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2988 | SvIOK_on(sv); | |
2989 | } else { | |
2990 | /* Integer is imprecise. NOK, IOKp */ | |
2991 | } | |
2992 | /* UV will not work better than IV */ | |
2993 | } else { | |
2994 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2995 | SvIsUV_on(sv); | |
2996 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 2997 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
2998 | SvIsUV_on(sv); |
2999 | } else { | |
607fa7f2 | 3000 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
3001 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs |
3002 | NV preservse UV so can do correct comparison. */ | |
3003 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
3004 | SvIOK_on(sv); | |
3005 | SvIsUV_on(sv); | |
3006 | } else { | |
3007 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
3008 | SvIsUV_on(sv); | |
3009 | } | |
3010 | } | |
3011 | } | |
28e5dec8 | 3012 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
3013 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3014 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
3015 | /* The UV slot will have been set from value returned by | |
3016 | grok_number above. The NV slot has just been set using | |
3017 | Atof. */ | |
560b0c46 | 3018 | SvNOK_on(sv); |
c2988b20 NC |
3019 | assert (SvIOKp(sv)); |
3020 | } else { | |
3021 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
3022 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
3023 | /* Small enough to preserve all bits. */ | |
3024 | (void)SvIOKp_on(sv); | |
3025 | SvNOK_on(sv); | |
45977657 | 3026 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
3027 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
3028 | SvIOK_on(sv); | |
3029 | /* Assumption: first non-preserved integer is < IV_MAX, | |
3030 | this NV is in the preserved range, therefore: */ | |
3031 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
3032 | < (UV)IV_MAX)) { | |
32fdb065 | 3033 | 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 |
3034 | } |
3035 | } else | |
3036 | sv_2iuv_non_preserve (sv, numtype); | |
3037 | } | |
28e5dec8 | 3038 | #endif /* NV_PRESERVES_UV */ |
f7bbb42a | 3039 | } |
ff68c719 | 3040 | } |
3041 | else { | |
d008e5eb | 3042 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3043 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3044 | report_uninit(sv); |
c6ee37c5 | 3045 | } |
25da4f38 IZ |
3046 | if (SvTYPE(sv) < SVt_IV) |
3047 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3048 | sv_upgrade(sv, SVt_IV); | |
ff68c719 | 3049 | return 0; |
3050 | } | |
25da4f38 | 3051 | |
1d7c1841 GS |
3052 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
3053 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 3054 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 3055 | } |
3056 | ||
645c22ef DM |
3057 | /* |
3058 | =for apidoc sv_2nv | |
3059 | ||
3060 | Return the num value of an SV, doing any necessary string or integer | |
3061 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
3062 | macros. | |
3063 | ||
3064 | =cut | |
3065 | */ | |
3066 | ||
65202027 | 3067 | NV |
864dbfa3 | 3068 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
3069 | { |
3070 | if (!sv) | |
3071 | return 0.0; | |
8990e307 | 3072 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
3073 | mg_get(sv); |
3074 | if (SvNOKp(sv)) | |
3075 | return SvNVX(sv); | |
a0d0e21e | 3076 | if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 3077 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && |
504618e9 | 3078 | !grok_number(SvPVX_const(sv), SvCUR(sv), NULL)) |
a0d0e21e | 3079 | not_a_number(sv); |
097ee67d | 3080 | return Atof(SvPVX(sv)); |
a0d0e21e | 3081 | } |
25da4f38 | 3082 | if (SvIOKp(sv)) { |
1c846c1f | 3083 | if (SvIsUV(sv)) |
65202027 | 3084 | return (NV)SvUVX(sv); |
25da4f38 | 3085 | else |
65202027 | 3086 | return (NV)SvIVX(sv); |
25da4f38 | 3087 | } |
16d20bd9 | 3088 | if (!SvROK(sv)) { |
d008e5eb | 3089 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3090 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3091 | report_uninit(sv); |
c6ee37c5 | 3092 | } |
16d20bd9 AD |
3093 | return 0; |
3094 | } | |
463ee0b2 | 3095 | } |
ed6116ce | 3096 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 3097 | if (SvROK(sv)) { |
a0d0e21e | 3098 | SV* tmpstr; |
1554e226 | 3099 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 3100 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 3101 | return SvNV(tmpstr); |
56431972 | 3102 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 3103 | } |
765f542d NC |
3104 | if (SvIsCOW(sv)) { |
3105 | sv_force_normal_flags(sv, 0); | |
8a818333 | 3106 | } |
0336b60e | 3107 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 3108 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3109 | report_uninit(sv); |
ed6116ce LW |
3110 | return 0.0; |
3111 | } | |
79072805 LW |
3112 | } |
3113 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
3114 | if (SvTYPE(sv) == SVt_IV) |
3115 | sv_upgrade(sv, SVt_PVNV); | |
3116 | else | |
3117 | sv_upgrade(sv, SVt_NV); | |
906f284f | 3118 | #ifdef USE_LONG_DOUBLE |
097ee67d | 3119 | DEBUG_c({ |
f93f4e46 | 3120 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
3121 | PerlIO_printf(Perl_debug_log, |
3122 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
3123 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
3124 | RESTORE_NUMERIC_LOCAL(); |
3125 | }); | |
65202027 | 3126 | #else |
572bbb43 | 3127 | DEBUG_c({ |
f93f4e46 | 3128 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 3129 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 3130 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
3131 | RESTORE_NUMERIC_LOCAL(); |
3132 | }); | |
572bbb43 | 3133 | #endif |
79072805 LW |
3134 | } |
3135 | else if (SvTYPE(sv) < SVt_PVNV) | |
3136 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
3137 | if (SvNOKp(sv)) { |
3138 | return SvNVX(sv); | |
61604483 | 3139 | } |
59d8ce62 | 3140 | if (SvIOKp(sv)) { |
9d6ce603 | 3141 | SvNV_set(sv, SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv)); |
28e5dec8 JH |
3142 | #ifdef NV_PRESERVES_UV |
3143 | SvNOK_on(sv); | |
3144 | #else | |
3145 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
3146 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
3147 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
3148 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
3149 | SvNOK_on(sv); | |
3150 | else | |
3151 | SvNOKp_on(sv); | |
3152 | #endif | |
93a17b20 | 3153 | } |
748a9306 | 3154 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 3155 | UV value; |
f54cb97a | 3156 | const int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); |
c2988b20 | 3157 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !numtype) |
a0d0e21e | 3158 | not_a_number(sv); |
28e5dec8 | 3159 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
3160 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3161 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 3162 | /* It's definitely an integer */ |
9d6ce603 | 3163 | SvNV_set(sv, (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value); |
c2988b20 | 3164 | } else |
9d6ce603 | 3165 | SvNV_set(sv, Atof(SvPVX(sv))); |
28e5dec8 JH |
3166 | SvNOK_on(sv); |
3167 | #else | |
9d6ce603 | 3168 | SvNV_set(sv, Atof(SvPVX(sv))); |
28e5dec8 JH |
3169 | /* Only set the public NV OK flag if this NV preserves the value in |
3170 | the PV at least as well as an IV/UV would. | |
3171 | Not sure how to do this 100% reliably. */ | |
3172 | /* if that shift count is out of range then Configure's test is | |
3173 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
3174 | UV_BITS */ | |
3175 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 3176 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 3177 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
3178 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
3179 | /* Can't use strtol etc to convert this string, so don't try. | |
3180 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
3181 | SvNOK_on(sv); | |
3182 | } else { | |
3183 | /* value has been set. It may not be precise. */ | |
3184 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
3185 | /* 2s complement assumption for (UV)IV_MIN */ | |
3186 | SvNOK_on(sv); /* Integer is too negative. */ | |
3187 | } else { | |
3188 | SvNOKp_on(sv); | |
3189 | SvIOKp_on(sv); | |
6fa402ec | 3190 | |
c2988b20 | 3191 | if (numtype & IS_NUMBER_NEG) { |
45977657 | 3192 | SvIV_set(sv, -(IV)value); |
c2988b20 | 3193 | } else if (value <= (UV)IV_MAX) { |
45977657 | 3194 | SvIV_set(sv, (IV)value); |
c2988b20 | 3195 | } else { |
607fa7f2 | 3196 | SvUV_set(sv, value); |
c2988b20 NC |
3197 | SvIsUV_on(sv); |
3198 | } | |
3199 | ||
3200 | if (numtype & IS_NUMBER_NOT_INT) { | |
3201 | /* I believe that even if the original PV had decimals, | |
3202 | they are lost beyond the limit of the FP precision. | |
3203 | However, neither is canonical, so both only get p | |
3204 | flags. NWC, 2000/11/25 */ | |
3205 | /* Both already have p flags, so do nothing */ | |
3206 | } else { | |
3207 | NV nv = SvNVX(sv); | |
3208 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
3209 | if (SvIVX(sv) == I_V(nv)) { | |
3210 | SvNOK_on(sv); | |
3211 | SvIOK_on(sv); | |
3212 | } else { | |
3213 | SvIOK_on(sv); | |
3214 | /* It had no "." so it must be integer. */ | |
3215 | } | |
3216 | } else { | |
3217 | /* between IV_MAX and NV(UV_MAX). | |
3218 | Could be slightly > UV_MAX */ | |
6fa402ec | 3219 | |
c2988b20 NC |
3220 | if (numtype & IS_NUMBER_NOT_INT) { |
3221 | /* UV and NV both imprecise. */ | |
3222 | } else { | |
3223 | UV nv_as_uv = U_V(nv); | |
3224 | ||
3225 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
3226 | SvNOK_on(sv); | |
3227 | SvIOK_on(sv); | |
3228 | } else { | |
3229 | SvIOK_on(sv); | |
3230 | } | |
3231 | } | |
3232 | } | |
3233 | } | |
3234 | } | |
3235 | } | |
28e5dec8 | 3236 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 3237 | } |
79072805 | 3238 | else { |
599cee73 | 3239 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 3240 | report_uninit(sv); |
25da4f38 IZ |
3241 | if (SvTYPE(sv) < SVt_NV) |
3242 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
3243 | /* XXX Ilya implies that this is a bug in callers that assume this |
3244 | and ideally should be fixed. */ | |
25da4f38 | 3245 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 3246 | return 0.0; |
79072805 | 3247 | } |
572bbb43 | 3248 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 3249 | DEBUG_c({ |
f93f4e46 | 3250 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
3251 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
3252 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
3253 | RESTORE_NUMERIC_LOCAL(); |
3254 | }); | |
65202027 | 3255 | #else |
572bbb43 | 3256 | DEBUG_c({ |
f93f4e46 | 3257 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 3258 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 3259 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
3260 | RESTORE_NUMERIC_LOCAL(); |
3261 | }); | |
572bbb43 | 3262 | #endif |
463ee0b2 | 3263 | return SvNVX(sv); |
79072805 LW |
3264 | } |
3265 | ||
645c22ef DM |
3266 | /* asIV(): extract an integer from the string value of an SV. |
3267 | * Caller must validate PVX */ | |
3268 | ||
76e3520e | 3269 | STATIC IV |
cea2e8a9 | 3270 | S_asIV(pTHX_ SV *sv) |
36477c24 | 3271 | { |
c2988b20 NC |
3272 | UV value; |
3273 | int numtype = grok_number(SvPVX(sv), SvCUR(sv), &value); | |
3274 | ||
3275 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
3276 | == IS_NUMBER_IN_UV) { | |
645c22ef | 3277 | /* It's definitely an integer */ |
c2988b20 NC |
3278 | if (numtype & IS_NUMBER_NEG) { |
3279 | if (value < (UV)IV_MIN) | |
3280 | return -(IV)value; | |
3281 | } else { | |
3282 | if (value < (UV)IV_MAX) | |
3283 | return (IV)value; | |
3284 | } | |
3285 | } | |
d008e5eb | 3286 | if (!numtype) { |
d008e5eb GS |
3287 | if (ckWARN(WARN_NUMERIC)) |
3288 | not_a_number(sv); | |
3289 | } | |
c2988b20 | 3290 | return I_V(Atof(SvPVX(sv))); |
36477c24 | 3291 | } |
3292 | ||
645c22ef DM |
3293 | /* asUV(): extract an unsigned integer from the string value of an SV |
3294 | * Caller must validate PVX */ | |
3295 | ||
76e3520e | 3296 | STATIC UV |
cea2e8a9 | 3297 | S_asUV(pTHX_ SV *sv) |
36477c24 | 3298 | { |
c2988b20 | 3299 | UV value; |
504618e9 | 3300 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
36477c24 | 3301 | |
c2988b20 NC |
3302 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3303 | == IS_NUMBER_IN_UV) { | |
645c22ef | 3304 | /* It's definitely an integer */ |
6fa402ec | 3305 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
3306 | return value; |
3307 | } | |
d008e5eb | 3308 | if (!numtype) { |
d008e5eb GS |
3309 | if (ckWARN(WARN_NUMERIC)) |
3310 | not_a_number(sv); | |
3311 | } | |
097ee67d | 3312 | return U_V(Atof(SvPVX(sv))); |
36477c24 | 3313 | } |
3314 | ||
645c22ef DM |
3315 | /* |
3316 | =for apidoc sv_2pv_nolen | |
3317 | ||
3318 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
3319 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
3320 | =cut | |
3321 | */ | |
3322 | ||
79072805 | 3323 | char * |
864dbfa3 | 3324 | Perl_sv_2pv_nolen(pTHX_ register SV *sv) |
1fa8b10d JD |
3325 | { |
3326 | STRLEN n_a; | |
3327 | return sv_2pv(sv, &n_a); | |
3328 | } | |
3329 | ||
645c22ef DM |
3330 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
3331 | * UV as a string towards the end of buf, and return pointers to start and | |
3332 | * end of it. | |
3333 | * | |
3334 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
3335 | */ | |
3336 | ||
864dbfa3 | 3337 | static char * |
25da4f38 IZ |
3338 | uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
3339 | { | |
25da4f38 IZ |
3340 | char *ptr = buf + TYPE_CHARS(UV); |
3341 | char *ebuf = ptr; | |
3342 | int sign; | |
25da4f38 IZ |
3343 | |
3344 | if (is_uv) | |
3345 | sign = 0; | |
3346 | else if (iv >= 0) { | |
3347 | uv = iv; | |
3348 | sign = 0; | |
3349 | } else { | |
3350 | uv = -iv; | |
3351 | sign = 1; | |
3352 | } | |
3353 | do { | |
eb160463 | 3354 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
3355 | } while (uv /= 10); |
3356 | if (sign) | |
3357 | *--ptr = '-'; | |
3358 | *peob = ebuf; | |
3359 | return ptr; | |
3360 | } | |
3361 | ||
09540bc3 JH |
3362 | /* sv_2pv() is now a macro using Perl_sv_2pv_flags(); |
3363 | * this function provided for binary compatibility only | |
3364 | */ | |
3365 | ||
3366 | char * | |
3367 | Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp) | |
3368 | { | |
3369 | return sv_2pv_flags(sv, lp, SV_GMAGIC); | |
3370 | } | |
3371 | ||
645c22ef DM |
3372 | /* |
3373 | =for apidoc sv_2pv_flags | |
3374 | ||
ff276b08 | 3375 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
3376 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
3377 | if necessary. | |
3378 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
3379 | usually end up here too. | |
3380 | ||
3381 | =cut | |
3382 | */ | |
3383 | ||
8d6d96c1 HS |
3384 | char * |
3385 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
3386 | { | |
79072805 LW |
3387 | register char *s; |
3388 | int olderrno; | |
cb50f42d | 3389 | SV *tsv, *origsv; |
25da4f38 IZ |
3390 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
3391 | char *tmpbuf = tbuf; | |
79072805 | 3392 | |
463ee0b2 LW |
3393 | if (!sv) { |
3394 | *lp = 0; | |
73d840c0 | 3395 | return (char *)""; |
463ee0b2 | 3396 | } |
8990e307 | 3397 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
3398 | if (flags & SV_GMAGIC) |
3399 | mg_get(sv); | |
463ee0b2 LW |
3400 | if (SvPOKp(sv)) { |
3401 | *lp = SvCUR(sv); | |
3402 | return SvPVX(sv); | |
3403 | } | |
cf2093f6 | 3404 | if (SvIOKp(sv)) { |
1c846c1f | 3405 | if (SvIsUV(sv)) |
57def98f | 3406 | (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 3407 | else |
57def98f | 3408 | (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv)); |
46fc3d4c | 3409 | tsv = Nullsv; |
a0d0e21e | 3410 | goto tokensave; |
463ee0b2 LW |
3411 | } |
3412 | if (SvNOKp(sv)) { | |
2d4389e4 | 3413 | Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf); |
46fc3d4c | 3414 | tsv = Nullsv; |
a0d0e21e | 3415 | goto tokensave; |
463ee0b2 | 3416 | } |
16d20bd9 | 3417 | if (!SvROK(sv)) { |
d008e5eb | 3418 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3419 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3420 | report_uninit(sv); |
c6ee37c5 | 3421 | } |
16d20bd9 | 3422 | *lp = 0; |
73d840c0 | 3423 | return (char *)""; |
16d20bd9 | 3424 | } |
463ee0b2 | 3425 | } |
ed6116ce LW |
3426 | if (SvTHINKFIRST(sv)) { |
3427 | if (SvROK(sv)) { | |
a0d0e21e | 3428 | SV* tmpstr; |
e1ec3a88 | 3429 | register const char *typestr; |
1554e226 | 3430 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 3431 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
446eaa42 YST |
3432 | char *pv = SvPV(tmpstr, *lp); |
3433 | if (SvUTF8(tmpstr)) | |
3434 | SvUTF8_on(sv); | |
3435 | else | |
3436 | SvUTF8_off(sv); | |
3437 | return pv; | |
3438 | } | |
cb50f42d | 3439 | origsv = sv; |
ed6116ce LW |
3440 | sv = (SV*)SvRV(sv); |
3441 | if (!sv) | |
e1ec3a88 | 3442 | typestr = "NULLREF"; |
ed6116ce | 3443 | else { |
f9277f47 IZ |
3444 | MAGIC *mg; |
3445 | ||
ed6116ce | 3446 | switch (SvTYPE(sv)) { |
f9277f47 IZ |
3447 | case SVt_PVMG: |
3448 | if ( ((SvFLAGS(sv) & | |
1c846c1f | 3449 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) |
faf82a0b | 3450 | == (SVs_OBJECT|SVs_SMG)) |
14befaf4 | 3451 | && (mg = mg_find(sv, PERL_MAGIC_qr))) { |
e1ec3a88 | 3452 | const regexp *re = (regexp *)mg->mg_obj; |
1bd3ad17 | 3453 | |
2cd61cdb | 3454 | if (!mg->mg_ptr) { |
e1ec3a88 | 3455 | const char *fptr = "msix"; |
8782bef2 GB |
3456 | char reflags[6]; |
3457 | char ch; | |
3458 | int left = 0; | |
3459 | int right = 4; | |
ff385a1b | 3460 | char need_newline = 0; |
eb160463 | 3461 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
8782bef2 | 3462 | |
155aba94 | 3463 | while((ch = *fptr++)) { |
8782bef2 GB |
3464 | if(reganch & 1) { |
3465 | reflags[left++] = ch; | |
3466 | } | |
3467 | else { | |
3468 | reflags[right--] = ch; | |
3469 | } | |
3470 | reganch >>= 1; | |
3471 | } | |
3472 | if(left != 4) { | |
3473 | reflags[left] = '-'; | |
3474 | left = 5; | |
3475 | } | |
3476 | ||
3477 | mg->mg_len = re->prelen + 4 + left; | |
ff385a1b JF |
3478 | /* |
3479 | * If /x was used, we have to worry about a regex | |
3480 | * ending with a comment later being embedded | |
3481 | * within another regex. If so, we don't want this | |
3482 | * regex's "commentization" to leak out to the | |
3483 | * right part of the enclosing regex, we must cap | |
3484 | * it with a newline. | |
3485 | * | |
3486 | * So, if /x was used, we scan backwards from the | |
3487 | * end of the regex. If we find a '#' before we | |
3488 | * find a newline, we need to add a newline | |
3489 | * ourself. If we find a '\n' first (or if we | |
3490 | * don't find '#' or '\n'), we don't need to add | |
3491 | * anything. -jfriedl | |
3492 | */ | |
3493 | if (PMf_EXTENDED & re->reganch) | |
3494 | { | |
e1ec3a88 | 3495 | const char *endptr = re->precomp + re->prelen; |
ff385a1b JF |
3496 | while (endptr >= re->precomp) |
3497 | { | |
e1ec3a88 | 3498 | const char c = *(endptr--); |
ff385a1b JF |
3499 | if (c == '\n') |
3500 | break; /* don't need another */ | |
3501 | if (c == '#') { | |
3502 | /* we end while in a comment, so we | |
3503 | need a newline */ | |
3504 | mg->mg_len++; /* save space for it */ | |
3505 | need_newline = 1; /* note to add it */ | |
ab01544f | 3506 | break; |
ff385a1b JF |
3507 | } |
3508 | } | |
3509 | } | |
3510 | ||
8782bef2 GB |
3511 | New(616, mg->mg_ptr, mg->mg_len + 1 + left, char); |
3512 | Copy("(?", mg->mg_ptr, 2, char); | |
3513 | Copy(reflags, mg->mg_ptr+2, left, char); | |
3514 | Copy(":", mg->mg_ptr+left+2, 1, char); | |
3515 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
ff385a1b JF |
3516 | if (need_newline) |
3517 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
1bd3ad17 IZ |
3518 | mg->mg_ptr[mg->mg_len - 1] = ')'; |
3519 | mg->mg_ptr[mg->mg_len] = 0; | |
3520 | } | |
3280af22 | 3521 | PL_reginterp_cnt += re->program[0].next_off; |
cb50f42d YST |
3522 | |
3523 | if (re->reganch & ROPT_UTF8) | |
3524 | SvUTF8_on(origsv); | |
3525 | else | |
3526 | SvUTF8_off(origsv); | |
1bd3ad17 IZ |
3527 | *lp = mg->mg_len; |
3528 | return mg->mg_ptr; | |
f9277f47 IZ |
3529 | } |
3530 | /* Fall through */ | |
ed6116ce LW |
3531 | case SVt_NULL: |
3532 | case SVt_IV: | |
3533 | case SVt_NV: | |
3534 | case SVt_RV: | |
3535 | case SVt_PV: | |
3536 | case SVt_PVIV: | |
3537 | case SVt_PVNV: | |
e1ec3a88 AL |
3538 | case SVt_PVBM: typestr = SvROK(sv) ? "REF" : "SCALAR"; break; |
3539 | case SVt_PVLV: typestr = SvROK(sv) ? "REF" | |
be65207d DM |
3540 | /* tied lvalues should appear to be |
3541 | * scalars for backwards compatitbility */ | |
3542 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
3543 | ? "SCALAR" : "LVALUE"; break; | |
e1ec3a88 AL |
3544 | case SVt_PVAV: typestr = "ARRAY"; break; |
3545 | case SVt_PVHV: typestr = "HASH"; break; | |
3546 | case SVt_PVCV: typestr = "CODE"; break; | |
3547 | case SVt_PVGV: typestr = "GLOB"; break; | |
3548 | case SVt_PVFM: typestr = "FORMAT"; break; | |
3549 | case SVt_PVIO: typestr = "IO"; break; | |
3550 | default: typestr = "UNKNOWN"; break; | |
ed6116ce | 3551 | } |
46fc3d4c | 3552 | tsv = NEWSV(0,0); |
a5cb6b62 | 3553 | if (SvOBJECT(sv)) { |
bfcb3514 | 3554 | const char *name = HvNAME_get(SvSTASH(sv)); |
a5cb6b62 | 3555 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s(0x%"UVxf")", |
e1ec3a88 | 3556 | name ? name : "__ANON__" , typestr, PTR2UV(sv)); |
a5cb6b62 | 3557 | } |
ed6116ce | 3558 | else |
e1ec3a88 | 3559 | Perl_sv_setpvf(aTHX_ tsv, "%s(0x%"UVxf")", typestr, PTR2UV(sv)); |
a0d0e21e | 3560 | goto tokensaveref; |
463ee0b2 | 3561 | } |
e1ec3a88 | 3562 | *lp = strlen(typestr); |
73d840c0 | 3563 | return (char *)typestr; |
79072805 | 3564 | } |
0336b60e | 3565 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 3566 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3567 | report_uninit(sv); |
ed6116ce | 3568 | *lp = 0; |
73d840c0 | 3569 | return (char *)""; |
79072805 | 3570 | } |
79072805 | 3571 | } |
28e5dec8 JH |
3572 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
3573 | /* I'm assuming that if both IV and NV are equally valid then | |
3574 | converting the IV is going to be more efficient */ | |
e1ec3a88 AL |
3575 | const U32 isIOK = SvIOK(sv); |
3576 | const U32 isUIOK = SvIsUV(sv); | |
28e5dec8 JH |
3577 | char buf[TYPE_CHARS(UV)]; |
3578 | char *ebuf, *ptr; | |
3579 | ||
3580 | if (SvTYPE(sv) < SVt_PVIV) | |
3581 | sv_upgrade(sv, SVt_PVIV); | |
3582 | if (isUIOK) | |
3583 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
3584 | else | |
3585 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
eb160463 | 3586 | SvGROW(sv, (STRLEN)(ebuf - ptr + 1)); /* inlined from sv_setpvn */ |
28e5dec8 JH |
3587 | Move(ptr,SvPVX(sv),ebuf - ptr,char); |
3588 | SvCUR_set(sv, ebuf - ptr); | |
3589 | s = SvEND(sv); | |
3590 | *s = '\0'; | |
3591 | if (isIOK) | |
3592 | SvIOK_on(sv); | |
3593 | else | |
3594 | SvIOKp_on(sv); | |
3595 | if (isUIOK) | |
3596 | SvIsUV_on(sv); | |
3597 | } | |
3598 | else if (SvNOKp(sv)) { | |
79072805 LW |
3599 | if (SvTYPE(sv) < SVt_PVNV) |
3600 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 3601 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
59155cc0 | 3602 | SvGROW(sv, NV_DIG + 20); |
463ee0b2 | 3603 | s = SvPVX(sv); |
79072805 | 3604 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 3605 | #ifdef apollo |
463ee0b2 | 3606 | if (SvNVX(sv) == 0.0) |
79072805 LW |
3607 | (void)strcpy(s,"0"); |
3608 | else | |
3609 | #endif /*apollo*/ | |
bbce6d69 | 3610 | { |
2d4389e4 | 3611 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 3612 | } |
79072805 | 3613 | errno = olderrno; |
a0d0e21e LW |
3614 | #ifdef FIXNEGATIVEZERO |
3615 | if (*s == '-' && s[1] == '0' && !s[2]) | |
3616 | strcpy(s,"0"); | |
3617 | #endif | |
79072805 LW |
3618 | while (*s) s++; |
3619 | #ifdef hcx | |
3620 | if (s[-1] == '.') | |
46fc3d4c | 3621 | *--s = '\0'; |
79072805 LW |
3622 | #endif |
3623 | } | |
79072805 | 3624 | else { |
0336b60e IZ |
3625 | if (ckWARN(WARN_UNINITIALIZED) |
3626 | && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) | |
29489e7c | 3627 | report_uninit(sv); |
a0d0e21e | 3628 | *lp = 0; |
25da4f38 IZ |
3629 | if (SvTYPE(sv) < SVt_PV) |
3630 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3631 | sv_upgrade(sv, SVt_PV); | |
73d840c0 | 3632 | return (char *)""; |
79072805 | 3633 | } |
463ee0b2 LW |
3634 | *lp = s - SvPVX(sv); |
3635 | SvCUR_set(sv, *lp); | |
79072805 | 3636 | SvPOK_on(sv); |
1d7c1841 GS |
3637 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3638 | PTR2UV(sv),SvPVX(sv))); | |
463ee0b2 | 3639 | return SvPVX(sv); |
a0d0e21e LW |
3640 | |
3641 | tokensave: | |
3642 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ | |
3643 | /* Sneaky stuff here */ | |
3644 | ||
3645 | tokensaveref: | |
46fc3d4c | 3646 | if (!tsv) |
96827780 | 3647 | tsv = newSVpv(tmpbuf, 0); |
46fc3d4c | 3648 | sv_2mortal(tsv); |
3649 | *lp = SvCUR(tsv); | |
3650 | return SvPVX(tsv); | |
a0d0e21e LW |
3651 | } |
3652 | else { | |
27da23d5 | 3653 | dVAR; |
a0d0e21e | 3654 | STRLEN len; |
73d840c0 | 3655 | const char *t; |
46fc3d4c | 3656 | |
3657 | if (tsv) { | |
3658 | sv_2mortal(tsv); | |
3659 | t = SvPVX(tsv); | |
3660 | len = SvCUR(tsv); | |
3661 | } | |
3662 | else { | |
96827780 MB |
3663 | t = tmpbuf; |
3664 | len = strlen(tmpbuf); | |
46fc3d4c | 3665 | } |
a0d0e21e | 3666 | #ifdef FIXNEGATIVEZERO |
46fc3d4c | 3667 | if (len == 2 && t[0] == '-' && t[1] == '0') { |
3668 | t = "0"; | |
3669 | len = 1; | |
3670 | } | |
a0d0e21e LW |
3671 | #endif |
3672 | (void)SvUPGRADE(sv, SVt_PV); | |
46fc3d4c | 3673 | *lp = len; |
a0d0e21e LW |
3674 | s = SvGROW(sv, len + 1); |
3675 | SvCUR_set(sv, len); | |
6bf554b4 | 3676 | SvPOKp_on(sv); |
e90e2364 | 3677 | return strcpy(s, t); |
a0d0e21e | 3678 | } |
463ee0b2 LW |
3679 | } |
3680 | ||
645c22ef | 3681 | /* |
6050d10e JP |
3682 | =for apidoc sv_copypv |
3683 | ||
3684 | Copies a stringified representation of the source SV into the | |
3685 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3686 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3687 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3688 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3689 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3690 | would lose the UTF-8'ness of the PV. |
3691 | ||
3692 | =cut | |
3693 | */ | |
3694 | ||
3695 | void | |
3696 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3697 | { | |
446eaa42 YST |
3698 | STRLEN len; |
3699 | char *s; | |
3700 | s = SvPV(ssv,len); | |
cb50f42d | 3701 | sv_setpvn(dsv,s,len); |
446eaa42 | 3702 | if (SvUTF8(ssv)) |
cb50f42d | 3703 | SvUTF8_on(dsv); |
446eaa42 | 3704 | else |
cb50f42d | 3705 | SvUTF8_off(dsv); |
6050d10e JP |
3706 | } |
3707 | ||
3708 | /* | |
645c22ef DM |
3709 | =for apidoc sv_2pvbyte_nolen |
3710 | ||
3711 | Return a pointer to the byte-encoded representation of the SV. | |
1e54db1a | 3712 | May cause the SV to be downgraded from UTF-8 as a side-effect. |
645c22ef DM |
3713 | |
3714 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3715 | ||
3716 | =cut | |
3717 | */ | |
3718 | ||
7340a771 GS |
3719 | char * |
3720 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
3721 | { | |
560a288e GS |
3722 | STRLEN n_a; |
3723 | return sv_2pvbyte(sv, &n_a); | |
7340a771 GS |
3724 | } |
3725 | ||
645c22ef DM |
3726 | /* |
3727 | =for apidoc sv_2pvbyte | |
3728 | ||
3729 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 3730 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
3731 | side-effect. |
3732 | ||
3733 | Usually accessed via the C<SvPVbyte> macro. | |
3734 | ||
3735 | =cut | |
3736 | */ | |
3737 | ||
7340a771 GS |
3738 | char * |
3739 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3740 | { | |
0875d2fe NIS |
3741 | sv_utf8_downgrade(sv,0); |
3742 | return SvPV(sv,*lp); | |
7340a771 GS |
3743 | } |
3744 | ||
645c22ef DM |
3745 | /* |
3746 | =for apidoc sv_2pvutf8_nolen | |
3747 | ||
1e54db1a JH |
3748 | Return a pointer to the UTF-8-encoded representation of the SV. |
3749 | May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3750 | |
3751 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3752 | ||
3753 | =cut | |
3754 | */ | |
3755 | ||
7340a771 GS |
3756 | char * |
3757 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
3758 | { | |
560a288e GS |
3759 | STRLEN n_a; |
3760 | return sv_2pvutf8(sv, &n_a); | |
7340a771 GS |
3761 | } |
3762 | ||
645c22ef DM |
3763 | /* |
3764 | =for apidoc sv_2pvutf8 | |
3765 | ||
1e54db1a JH |
3766 | Return a pointer to the UTF-8-encoded representation of the SV, and set *lp |
3767 | to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3768 | |
3769 | Usually accessed via the C<SvPVutf8> macro. | |
3770 | ||
3771 | =cut | |
3772 | */ | |
3773 | ||
7340a771 GS |
3774 | char * |
3775 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3776 | { | |
560a288e | 3777 | sv_utf8_upgrade(sv); |
7d59b7e4 | 3778 | return SvPV(sv,*lp); |
7340a771 | 3779 | } |
1c846c1f | 3780 | |
645c22ef DM |
3781 | /* |
3782 | =for apidoc sv_2bool | |
3783 | ||
3784 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3785 | sv_true() or its macro equivalent. |
645c22ef DM |
3786 | |
3787 | =cut | |
3788 | */ | |
3789 | ||
463ee0b2 | 3790 | bool |
864dbfa3 | 3791 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3792 | { |
8990e307 | 3793 | if (SvGMAGICAL(sv)) |
463ee0b2 LW |
3794 | mg_get(sv); |
3795 | ||
a0d0e21e LW |
3796 | if (!SvOK(sv)) |
3797 | return 0; | |
3798 | if (SvROK(sv)) { | |
a0d0e21e | 3799 | SV* tmpsv; |
1554e226 | 3800 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3801 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3802 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3803 | return SvRV(sv) != 0; |
3804 | } | |
463ee0b2 | 3805 | if (SvPOKp(sv)) { |
11343788 MB |
3806 | register XPV* Xpvtmp; |
3807 | if ((Xpvtmp = (XPV*)SvANY(sv)) && | |
339049b0 | 3808 | (*sv->sv_u.svu_pv > '0' || |
11343788 | 3809 | Xpvtmp->xpv_cur > 1 || |
339049b0 | 3810 | (Xpvtmp->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
463ee0b2 LW |
3811 | return 1; |
3812 | else | |
3813 | return 0; | |
3814 | } | |
3815 | else { | |
3816 | if (SvIOKp(sv)) | |
3817 | return SvIVX(sv) != 0; | |
3818 | else { | |
3819 | if (SvNOKp(sv)) | |
3820 | return SvNVX(sv) != 0.0; | |
3821 | else | |
3822 | return FALSE; | |
3823 | } | |
3824 | } | |
79072805 LW |
3825 | } |
3826 | ||
09540bc3 JH |
3827 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
3828 | * this function provided for binary compatibility only | |
3829 | */ | |
3830 | ||
3831 | ||
3832 | STRLEN | |
3833 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
3834 | { | |
3835 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
3836 | } | |
3837 | ||
c461cf8f JH |
3838 | /* |
3839 | =for apidoc sv_utf8_upgrade | |
3840 | ||
78ea37eb | 3841 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3842 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3843 | Always sets the SvUTF8 flag to avoid future validity checks even |
3844 | if all the bytes have hibit clear. | |
c461cf8f | 3845 | |
13a6c0e0 JH |
3846 | This is not as a general purpose byte encoding to Unicode interface: |
3847 | use the Encode extension for that. | |
3848 | ||
8d6d96c1 HS |
3849 | =for apidoc sv_utf8_upgrade_flags |
3850 | ||
78ea37eb | 3851 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3852 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3853 | Always sets the SvUTF8 flag to avoid future validity checks even |
3854 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3855 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3856 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3857 | ||
13a6c0e0 JH |
3858 | This is not as a general purpose byte encoding to Unicode interface: |
3859 | use the Encode extension for that. | |
3860 | ||
8d6d96c1 HS |
3861 | =cut |
3862 | */ | |
3863 | ||
3864 | STRLEN | |
3865 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3866 | { | |
808c356f RGS |
3867 | if (sv == &PL_sv_undef) |
3868 | return 0; | |
e0e62c2a NIS |
3869 | if (!SvPOK(sv)) { |
3870 | STRLEN len = 0; | |
d52b7888 NC |
3871 | if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) { |
3872 | (void) sv_2pv_flags(sv,&len, flags); | |
3873 | if (SvUTF8(sv)) | |
3874 | return len; | |
3875 | } else { | |
3876 | (void) SvPV_force(sv,len); | |
3877 | } | |
e0e62c2a | 3878 | } |
4411f3b6 | 3879 | |
f5cee72b | 3880 | if (SvUTF8(sv)) { |
5fec3b1d | 3881 | return SvCUR(sv); |
f5cee72b | 3882 | } |
5fec3b1d | 3883 | |
765f542d NC |
3884 | if (SvIsCOW(sv)) { |
3885 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3886 | } |
3887 | ||
88632417 | 3888 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3889 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 3890 | else { /* Assume Latin-1/EBCDIC */ |
c4e7c712 NC |
3891 | /* This function could be much more efficient if we |
3892 | * had a FLAG in SVs to signal if there are any hibit | |
3893 | * chars in the PV. Given that there isn't such a flag | |
3894 | * make the loop as fast as possible. */ | |
3895 | U8 *s = (U8 *) SvPVX(sv); | |
3896 | U8 *e = (U8 *) SvEND(sv); | |
3897 | U8 *t = s; | |
3898 | int hibit = 0; | |
3899 | ||
3900 | while (t < e) { | |
3901 | U8 ch = *t++; | |
3902 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) | |
3903 | break; | |
3904 | } | |
3905 | if (hibit) { | |
3906 | STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */ | |
3907 | s = bytes_to_utf8((U8*)s, &len); | |
3908 | ||
3909 | SvPV_free(sv); /* No longer using what was there before. */ | |
3910 | ||
3911 | SvPV_set(sv, (char*)s); | |
3912 | SvCUR_set(sv, len - 1); | |
3913 | SvLEN_set(sv, len); /* No longer know the real size. */ | |
3914 | } | |
3915 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ | |
3916 | SvUTF8_on(sv); | |
560a288e | 3917 | } |
4411f3b6 | 3918 | return SvCUR(sv); |
560a288e GS |
3919 | } |
3920 | ||
c461cf8f JH |
3921 | /* |
3922 | =for apidoc sv_utf8_downgrade | |
3923 | ||
78ea37eb TS |
3924 | Attempts to convert the PV of an SV from characters to bytes. |
3925 | If the PV contains a character beyond byte, this conversion will fail; | |
3926 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
3927 | true, croaks. |
3928 | ||
13a6c0e0 JH |
3929 | This is not as a general purpose Unicode to byte encoding interface: |
3930 | use the Encode extension for that. | |
3931 | ||
c461cf8f JH |
3932 | =cut |
3933 | */ | |
3934 | ||
560a288e GS |
3935 | bool |
3936 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
3937 | { | |
78ea37eb | 3938 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 3939 | if (SvCUR(sv)) { |
03cfe0ae | 3940 | U8 *s; |
652088fc | 3941 | STRLEN len; |
fa301091 | 3942 | |
765f542d NC |
3943 | if (SvIsCOW(sv)) { |
3944 | sv_force_normal_flags(sv, 0); | |
3945 | } | |
03cfe0ae NIS |
3946 | s = (U8 *) SvPV(sv, len); |
3947 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
3948 | if (fail_ok) |
3949 | return FALSE; | |
3950 | else { | |
3951 | if (PL_op) | |
3952 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 3953 | OP_DESC(PL_op)); |
fa301091 JH |
3954 | else |
3955 | Perl_croak(aTHX_ "Wide character"); | |
3956 | } | |
4b3603a4 | 3957 | } |
b162af07 | 3958 | SvCUR_set(sv, len); |
67e989fb | 3959 | } |
560a288e | 3960 | } |
ffebcc3e | 3961 | SvUTF8_off(sv); |
560a288e GS |
3962 | return TRUE; |
3963 | } | |
3964 | ||
c461cf8f JH |
3965 | /* |
3966 | =for apidoc sv_utf8_encode | |
3967 | ||
78ea37eb TS |
3968 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
3969 | flag off so that it looks like octets again. | |
c461cf8f JH |
3970 | |
3971 | =cut | |
3972 | */ | |
3973 | ||
560a288e GS |
3974 | void |
3975 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
3976 | { | |
4411f3b6 | 3977 | (void) sv_utf8_upgrade(sv); |
4c94c214 NC |
3978 | if (SvIsCOW(sv)) { |
3979 | sv_force_normal_flags(sv, 0); | |
3980 | } | |
3981 | if (SvREADONLY(sv)) { | |
3982 | Perl_croak(aTHX_ PL_no_modify); | |
3983 | } | |
560a288e GS |
3984 | SvUTF8_off(sv); |
3985 | } | |
3986 | ||
4411f3b6 NIS |
3987 | /* |
3988 | =for apidoc sv_utf8_decode | |
3989 | ||
78ea37eb TS |
3990 | If the PV of the SV is an octet sequence in UTF-8 |
3991 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
3992 | so that it looks like a character. If the PV contains only single-byte | |
3993 | characters, the C<SvUTF8> flag stays being off. | |
3994 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
3995 | |
3996 | =cut | |
3997 | */ | |
3998 | ||
560a288e GS |
3999 | bool |
4000 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
4001 | { | |
78ea37eb | 4002 | if (SvPOKp(sv)) { |
63cd0674 NIS |
4003 | U8 *c; |
4004 | U8 *e; | |
9cbac4c7 | 4005 | |
645c22ef DM |
4006 | /* The octets may have got themselves encoded - get them back as |
4007 | * bytes | |
4008 | */ | |
4009 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
4010 | return FALSE; |
4011 | ||
4012 | /* it is actually just a matter of turning the utf8 flag on, but | |
4013 | * we want to make sure everything inside is valid utf8 first. | |
4014 | */ | |
63cd0674 NIS |
4015 | c = (U8 *) SvPVX(sv); |
4016 | if (!is_utf8_string(c, SvCUR(sv)+1)) | |
67e989fb | 4017 | return FALSE; |
63cd0674 | 4018 | e = (U8 *) SvEND(sv); |
511c2ff0 | 4019 | while (c < e) { |
c4d5f83a NIS |
4020 | U8 ch = *c++; |
4021 | if (!UTF8_IS_INVARIANT(ch)) { | |
67e989fb JH |
4022 | SvUTF8_on(sv); |
4023 | break; | |
4024 | } | |
560a288e | 4025 | } |
560a288e GS |
4026 | } |
4027 | return TRUE; | |
4028 | } | |
4029 | ||
09540bc3 JH |
4030 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); |
4031 | * this function provided for binary compatibility only | |
4032 | */ | |
4033 | ||
4034 | void | |
4035 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
4036 | { | |
4037 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
4038 | } | |
4039 | ||
954c1994 GS |
4040 | /* |
4041 | =for apidoc sv_setsv | |
4042 | ||
645c22ef DM |
4043 | Copies the contents of the source SV C<ssv> into the destination SV |
4044 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4045 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4046 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4047 | content of the destination. | |
4048 | ||
4049 | You probably want to use one of the assortment of wrappers, such as | |
4050 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4051 | C<SvSetMagicSV_nosteal>. | |
4052 | ||
8d6d96c1 HS |
4053 | =for apidoc sv_setsv_flags |
4054 | ||
645c22ef DM |
4055 | Copies the contents of the source SV C<ssv> into the destination SV |
4056 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4057 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4058 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4059 | content of the destination. | |
4060 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
5fcdf167 NC |
4061 | C<ssv> if appropriate, else not. If the C<flags> parameter has the |
4062 | C<NOSTEAL> bit set then the buffers of temps will not be stolen. <sv_setsv> | |
4063 | and C<sv_setsv_nomg> are implemented in terms of this function. | |
645c22ef DM |
4064 | |
4065 | You probably want to use one of the assortment of wrappers, such as | |
4066 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4067 | C<SvSetMagicSV_nosteal>. | |
4068 | ||
4069 | This is the primary function for copying scalars, and most other | |
4070 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
4071 | |
4072 | =cut | |
4073 | */ | |
4074 | ||
4075 | void | |
4076 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
4077 | { | |
8990e307 LW |
4078 | register U32 sflags; |
4079 | register int dtype; | |
4080 | register int stype; | |
463ee0b2 | 4081 | |
79072805 LW |
4082 | if (sstr == dstr) |
4083 | return; | |
765f542d | 4084 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 4085 | if (!sstr) |
3280af22 | 4086 | sstr = &PL_sv_undef; |
8990e307 LW |
4087 | stype = SvTYPE(sstr); |
4088 | dtype = SvTYPE(dstr); | |
79072805 | 4089 | |
a0d0e21e | 4090 | SvAMAGIC_off(dstr); |
7a5fa8a2 | 4091 | if ( SvVOK(dstr) ) |
ece467f9 JP |
4092 | { |
4093 | /* need to nuke the magic */ | |
4094 | mg_free(dstr); | |
4095 | SvRMAGICAL_off(dstr); | |
4096 | } | |
9e7bc3e8 | 4097 | |
463ee0b2 | 4098 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 4099 | |
8990e307 | 4100 | switch (stype) { |
79072805 | 4101 | case SVt_NULL: |
aece5585 | 4102 | undef_sstr: |
20408e3c GS |
4103 | if (dtype != SVt_PVGV) { |
4104 | (void)SvOK_off(dstr); | |
4105 | return; | |
4106 | } | |
4107 | break; | |
463ee0b2 | 4108 | case SVt_IV: |
aece5585 GA |
4109 | if (SvIOK(sstr)) { |
4110 | switch (dtype) { | |
4111 | case SVt_NULL: | |
8990e307 | 4112 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
4113 | break; |
4114 | case SVt_NV: | |
8990e307 | 4115 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4116 | break; |
4117 | case SVt_RV: | |
4118 | case SVt_PV: | |
a0d0e21e | 4119 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
4120 | break; |
4121 | } | |
4122 | (void)SvIOK_only(dstr); | |
45977657 | 4123 | SvIV_set(dstr, SvIVX(sstr)); |
25da4f38 IZ |
4124 | if (SvIsUV(sstr)) |
4125 | SvIsUV_on(dstr); | |
27c9684d AP |
4126 | if (SvTAINTED(sstr)) |
4127 | SvTAINT(dstr); | |
aece5585 | 4128 | return; |
8990e307 | 4129 | } |
aece5585 GA |
4130 | goto undef_sstr; |
4131 | ||
463ee0b2 | 4132 | case SVt_NV: |
aece5585 GA |
4133 | if (SvNOK(sstr)) { |
4134 | switch (dtype) { | |
4135 | case SVt_NULL: | |
4136 | case SVt_IV: | |
8990e307 | 4137 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
4138 | break; |
4139 | case SVt_RV: | |
4140 | case SVt_PV: | |
4141 | case SVt_PVIV: | |
a0d0e21e | 4142 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4143 | break; |
4144 | } | |
9d6ce603 | 4145 | SvNV_set(dstr, SvNVX(sstr)); |
aece5585 | 4146 | (void)SvNOK_only(dstr); |
27c9684d AP |
4147 | if (SvTAINTED(sstr)) |
4148 | SvTAINT(dstr); | |
aece5585 | 4149 | return; |
8990e307 | 4150 | } |
aece5585 GA |
4151 | goto undef_sstr; |
4152 | ||
ed6116ce | 4153 | case SVt_RV: |
8990e307 | 4154 | if (dtype < SVt_RV) |
ed6116ce | 4155 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 4156 | else if (dtype == SVt_PVGV && |
23bb1b96 | 4157 | SvROK(sstr) && SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
c07a80fd | 4158 | sstr = SvRV(sstr); |
a5f75d66 | 4159 | if (sstr == dstr) { |
1d7c1841 GS |
4160 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4161 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4162 | { | |
a5f75d66 | 4163 | GvIMPORTED_on(dstr); |
1d7c1841 | 4164 | } |
a5f75d66 AD |
4165 | GvMULTI_on(dstr); |
4166 | return; | |
4167 | } | |
c07a80fd | 4168 | goto glob_assign; |
4169 | } | |
ed6116ce | 4170 | break; |
fc36a67e | 4171 | case SVt_PVFM: |
d89fc664 NC |
4172 | #ifdef PERL_COPY_ON_WRITE |
4173 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
4174 | if (dtype < SVt_PVIV) | |
4175 | sv_upgrade(dstr, SVt_PVIV); | |
4176 | break; | |
4177 | } | |
4178 | /* Fall through */ | |
4179 | #endif | |
4180 | case SVt_PV: | |
8990e307 | 4181 | if (dtype < SVt_PV) |
463ee0b2 | 4182 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
4183 | break; |
4184 | case SVt_PVIV: | |
8990e307 | 4185 | if (dtype < SVt_PVIV) |
463ee0b2 | 4186 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
4187 | break; |
4188 | case SVt_PVNV: | |
8990e307 | 4189 | if (dtype < SVt_PVNV) |
463ee0b2 | 4190 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 4191 | break; |
4633a7c4 LW |
4192 | case SVt_PVAV: |
4193 | case SVt_PVHV: | |
4194 | case SVt_PVCV: | |
4633a7c4 | 4195 | case SVt_PVIO: |
a3b680e6 AL |
4196 | { |
4197 | const char * const type = sv_reftype(sstr,0); | |
533c011a | 4198 | if (PL_op) |
a3b680e6 | 4199 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", type, OP_NAME(PL_op)); |
4633a7c4 | 4200 | else |
a3b680e6 AL |
4201 | Perl_croak(aTHX_ "Bizarre copy of %s", type); |
4202 | } | |
4633a7c4 LW |
4203 | break; |
4204 | ||
79072805 | 4205 | case SVt_PVGV: |
8990e307 | 4206 | if (dtype <= SVt_PVGV) { |
c07a80fd | 4207 | glob_assign: |
a5f75d66 | 4208 | if (dtype != SVt_PVGV) { |
a3b680e6 AL |
4209 | const char * const name = GvNAME(sstr); |
4210 | const STRLEN len = GvNAMELEN(sstr); | |
b76195c2 DM |
4211 | /* don't upgrade SVt_PVLV: it can hold a glob */ |
4212 | if (dtype != SVt_PVLV) | |
4213 | sv_upgrade(dstr, SVt_PVGV); | |
14befaf4 | 4214 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 4215 | GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr)); |
a0d0e21e LW |
4216 | GvNAME(dstr) = savepvn(name, len); |
4217 | GvNAMELEN(dstr) = len; | |
4218 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
4219 | } | |
7bac28a0 | 4220 | /* ahem, death to those who redefine active sort subs */ |
3280af22 NIS |
4221 | else if (PL_curstackinfo->si_type == PERLSI_SORT |
4222 | && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr))) | |
cea2e8a9 | 4223 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", |
7bac28a0 | 4224 | GvNAME(dstr)); |
5bd07a3d | 4225 | |
7fb37951 AMS |
4226 | #ifdef GV_UNIQUE_CHECK |
4227 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4228 | Perl_croak(aTHX_ PL_no_modify); |
4229 | } | |
4230 | #endif | |
4231 | ||
a0d0e21e | 4232 | (void)SvOK_off(dstr); |
a5f75d66 | 4233 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 4234 | gp_free((GV*)dstr); |
79072805 | 4235 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
4236 | if (SvTAINTED(sstr)) |
4237 | SvTAINT(dstr); | |
1d7c1841 GS |
4238 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4239 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4240 | { | |
a5f75d66 | 4241 | GvIMPORTED_on(dstr); |
1d7c1841 | 4242 | } |
a5f75d66 | 4243 | GvMULTI_on(dstr); |
79072805 LW |
4244 | return; |
4245 | } | |
4246 | /* FALL THROUGH */ | |
4247 | ||
4248 | default: | |
8d6d96c1 | 4249 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 4250 | mg_get(sstr); |
eb160463 | 4251 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
4252 | stype = SvTYPE(sstr); |
4253 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
4254 | goto glob_assign; | |
4255 | } | |
4256 | } | |
ded42b9f | 4257 | if (stype == SVt_PVLV) |
6fc92669 | 4258 | (void)SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 4259 | else |
eb160463 | 4260 | (void)SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
4261 | } |
4262 | ||
8990e307 LW |
4263 | sflags = SvFLAGS(sstr); |
4264 | ||
4265 | if (sflags & SVf_ROK) { | |
4266 | if (dtype >= SVt_PV) { | |
4267 | if (dtype == SVt_PVGV) { | |
4268 | SV *sref = SvREFCNT_inc(SvRV(sstr)); | |
4269 | SV *dref = 0; | |
a3b680e6 | 4270 | const int intro = GvINTRO(dstr); |
a0d0e21e | 4271 | |
7fb37951 AMS |
4272 | #ifdef GV_UNIQUE_CHECK |
4273 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4274 | Perl_croak(aTHX_ PL_no_modify); |
4275 | } | |
4276 | #endif | |
4277 | ||
a0d0e21e | 4278 | if (intro) { |
a5f75d66 | 4279 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 4280 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 4281 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 4282 | } |
a5f75d66 | 4283 | GvMULTI_on(dstr); |
8990e307 LW |
4284 | switch (SvTYPE(sref)) { |
4285 | case SVt_PVAV: | |
a0d0e21e | 4286 | if (intro) |
890ed176 | 4287 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
4288 | else |
4289 | dref = (SV*)GvAV(dstr); | |
8990e307 | 4290 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 4291 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
4292 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4293 | { | |
a5f75d66 | 4294 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 4295 | } |
8990e307 LW |
4296 | break; |
4297 | case SVt_PVHV: | |
a0d0e21e | 4298 | if (intro) |
890ed176 | 4299 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
4300 | else |
4301 | dref = (SV*)GvHV(dstr); | |
8990e307 | 4302 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 4303 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
4304 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4305 | { | |
a5f75d66 | 4306 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 4307 | } |
8990e307 LW |
4308 | break; |
4309 | case SVt_PVCV: | |
8ebc5c01 | 4310 | if (intro) { |
4311 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
4312 | SvREFCNT_dec(GvCV(dstr)); | |
4313 | GvCV(dstr) = Nullcv; | |
68dc0745 | 4314 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 4315 | PL_sub_generation++; |
8ebc5c01 | 4316 | } |
890ed176 | 4317 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 4318 | } |
68dc0745 | 4319 | else |
4320 | dref = (SV*)GvCV(dstr); | |
4321 | if (GvCV(dstr) != (CV*)sref) { | |
748a9306 | 4322 | CV* cv = GvCV(dstr); |
4633a7c4 | 4323 | if (cv) { |
68dc0745 | 4324 | if (!GvCVGEN((GV*)dstr) && |
4325 | (CvROOT(cv) || CvXSUB(cv))) | |
4326 | { | |
7bac28a0 | 4327 | /* ahem, death to those who redefine |
4328 | * active sort subs */ | |
3280af22 NIS |
4329 | if (PL_curstackinfo->si_type == PERLSI_SORT && |
4330 | PL_sortcop == CvSTART(cv)) | |
1c846c1f | 4331 | Perl_croak(aTHX_ |
7bac28a0 | 4332 | "Can't redefine active sort subroutine %s", |
4333 | GvENAME((GV*)dstr)); | |
beab0874 JT |
4334 | /* Redefining a sub - warning is mandatory if |
4335 | it was a const and its value changed. */ | |
4336 | if (ckWARN(WARN_REDEFINE) | |
4337 | || (CvCONST(cv) | |
4338 | && (!CvCONST((CV*)sref) | |
4339 | || sv_cmp(cv_const_sv(cv), | |
4340 | cv_const_sv((CV*)sref))))) | |
4341 | { | |
9014280d | 4342 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 4343 | CvCONST(cv) |
910764e6 RGS |
4344 | ? "Constant subroutine %s::%s redefined" |
4345 | : "Subroutine %s::%s redefined", | |
bfcb3514 | 4346 | HvNAME_get(GvSTASH((GV*)dstr)), |
beab0874 JT |
4347 | GvENAME((GV*)dstr)); |
4348 | } | |
9607fc9c | 4349 | } |
fb24441d RGS |
4350 | if (!intro) |
4351 | cv_ckproto(cv, (GV*)dstr, | |
4352 | SvPOK(sref) ? SvPVX(sref) : Nullch); | |
4633a7c4 | 4353 | } |
a5f75d66 | 4354 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 4355 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 4356 | GvASSUMECV_on(dstr); |
3280af22 | 4357 | PL_sub_generation++; |
a5f75d66 | 4358 | } |
39bac7f7 | 4359 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
4360 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4361 | { | |
a5f75d66 | 4362 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 4363 | } |
8990e307 | 4364 | break; |
91bba347 LW |
4365 | case SVt_PVIO: |
4366 | if (intro) | |
890ed176 | 4367 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
4368 | else |
4369 | dref = (SV*)GvIOp(dstr); | |
4370 | GvIOp(dstr) = (IO*)sref; | |
4371 | break; | |
f4d13ee9 JH |
4372 | case SVt_PVFM: |
4373 | if (intro) | |
890ed176 | 4374 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
4375 | else |
4376 | dref = (SV*)GvFORM(dstr); | |
4377 | GvFORM(dstr) = (CV*)sref; | |
4378 | break; | |
8990e307 | 4379 | default: |
a0d0e21e | 4380 | if (intro) |
890ed176 | 4381 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
4382 | else |
4383 | dref = (SV*)GvSV(dstr); | |
8990e307 | 4384 | GvSV(dstr) = sref; |
39bac7f7 | 4385 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
4386 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4387 | { | |
a5f75d66 | 4388 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 4389 | } |
8990e307 LW |
4390 | break; |
4391 | } | |
4392 | if (dref) | |
4393 | SvREFCNT_dec(dref); | |
27c9684d AP |
4394 | if (SvTAINTED(sstr)) |
4395 | SvTAINT(dstr); | |
8990e307 LW |
4396 | return; |
4397 | } | |
a0d0e21e | 4398 | if (SvPVX(dstr)) { |
8bd4d4c5 | 4399 | SvPV_free(dstr); |
b162af07 SP |
4400 | SvLEN_set(dstr, 0); |
4401 | SvCUR_set(dstr, 0); | |
a0d0e21e | 4402 | } |
8990e307 | 4403 | } |
a0d0e21e | 4404 | (void)SvOK_off(dstr); |
b162af07 | 4405 | SvRV_set(dstr, SvREFCNT_inc(SvRV(sstr))); |
ed6116ce | 4406 | SvROK_on(dstr); |
8990e307 | 4407 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4408 | SvNOKp_on(dstr); |
4409 | /* Only set the public OK flag if the source has public OK. */ | |
4410 | if (sflags & SVf_NOK) | |
4411 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 4412 | SvNV_set(dstr, SvNVX(sstr)); |
ed6116ce | 4413 | } |
8990e307 | 4414 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4415 | (void)SvIOKp_on(dstr); |
4416 | if (sflags & SVf_IOK) | |
4417 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4418 | if (sflags & SVf_IVisUV) |
25da4f38 | 4419 | SvIsUV_on(dstr); |
45977657 | 4420 | SvIV_set(dstr, SvIVX(sstr)); |
ed6116ce | 4421 | } |
a0d0e21e LW |
4422 | if (SvAMAGIC(sstr)) { |
4423 | SvAMAGIC_on(dstr); | |
4424 | } | |
ed6116ce | 4425 | } |
8990e307 | 4426 | else if (sflags & SVp_POK) { |
765f542d | 4427 | bool isSwipe = 0; |
79072805 LW |
4428 | |
4429 | /* | |
4430 | * Check to see if we can just swipe the string. If so, it's a | |
4431 | * possible small lose on short strings, but a big win on long ones. | |
463ee0b2 LW |
4432 | * It might even be a win on short strings if SvPVX(dstr) |
4433 | * has to be allocated and SvPVX(sstr) has to be freed. | |
79072805 LW |
4434 | */ |
4435 | ||
120fac95 NC |
4436 | /* Whichever path we take through the next code, we want this true, |
4437 | and doing it now facilitates the COW check. */ | |
4438 | (void)SvPOK_only(dstr); | |
4439 | ||
765f542d NC |
4440 | if ( |
4441 | #ifdef PERL_COPY_ON_WRITE | |
4442 | (sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
4443 | && | |
4444 | #endif | |
4445 | !(isSwipe = | |
4446 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
4447 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
5fcdf167 NC |
4448 | (!(flags & SV_NOSTEAL)) && |
4449 | /* and we're allowed to steal temps */ | |
765f542d NC |
4450 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ |
4451 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 4452 | /* and won't be needed again, potentially */ |
765f542d NC |
4453 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
4454 | #ifdef PERL_COPY_ON_WRITE | |
4455 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS | |
120fac95 | 4456 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS |
765f542d NC |
4457 | && SvTYPE(sstr) >= SVt_PVIV) |
4458 | #endif | |
4459 | ) { | |
4460 | /* Failed the swipe test, and it's not a shared hash key either. | |
4461 | Have to copy the string. */ | |
4462 | STRLEN len = SvCUR(sstr); | |
4463 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
4464 | Move(SvPVX(sstr),SvPVX(dstr),len,char); | |
4465 | SvCUR_set(dstr, len); | |
4466 | *SvEND(dstr) = '\0'; | |
765f542d NC |
4467 | } else { |
4468 | /* If PERL_COPY_ON_WRITE is not defined, then isSwipe will always | |
4469 | be true in here. */ | |
4470 | #ifdef PERL_COPY_ON_WRITE | |
4471 | /* Either it's a shared hash key, or it's suitable for | |
4472 | copy-on-write or we can swipe the string. */ | |
46187eeb | 4473 | if (DEBUG_C_TEST) { |
ed252734 | 4474 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
4475 | sv_dump(sstr); |
4476 | sv_dump(dstr); | |
46187eeb | 4477 | } |
765f542d NC |
4478 | if (!isSwipe) { |
4479 | /* I believe I should acquire a global SV mutex if | |
4480 | it's a COW sv (not a shared hash key) to stop | |
4481 | it going un copy-on-write. | |
4482 | If the source SV has gone un copy on write between up there | |
4483 | and down here, then (assert() that) it is of the correct | |
4484 | form to make it copy on write again */ | |
4485 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
4486 | != (SVf_FAKE | SVf_READONLY)) { | |
4487 | SvREADONLY_on(sstr); | |
4488 | SvFAKE_on(sstr); | |
4489 | /* Make the source SV into a loop of 1. | |
4490 | (about to become 2) */ | |
a29f6d03 | 4491 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
4492 | } |
4493 | } | |
4494 | #endif | |
4495 | /* Initial code is common. */ | |
adbc6bb1 | 4496 | if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */ |
a5f75d66 AD |
4497 | if (SvOOK(dstr)) { |
4498 | SvFLAGS(dstr) &= ~SVf_OOK; | |
4499 | Safefree(SvPVX(dstr) - SvIVX(dstr)); | |
4500 | } | |
50483b2c | 4501 | else if (SvLEN(dstr)) |
a5f75d66 | 4502 | Safefree(SvPVX(dstr)); |
79072805 | 4503 | } |
765f542d NC |
4504 | |
4505 | #ifdef PERL_COPY_ON_WRITE | |
4506 | if (!isSwipe) { | |
4507 | /* making another shared SV. */ | |
4508 | STRLEN cur = SvCUR(sstr); | |
4509 | STRLEN len = SvLEN(sstr); | |
d89fc664 | 4510 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4511 | if (len) { |
4512 | /* SvIsCOW_normal */ | |
4513 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4514 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4515 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
765f542d NC |
4516 | SvPV_set(dstr, SvPVX(sstr)); |
4517 | } else { | |
4518 | /* SvIsCOW_shared_hash */ | |
4519 | UV hash = SvUVX(sstr); | |
46187eeb NC |
4520 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4521 | "Copy on write: Sharing hash\n")); | |
765f542d NC |
4522 | SvPV_set(dstr, |
4523 | sharepvn(SvPVX(sstr), | |
4524 | (sflags & SVf_UTF8?-cur:cur), hash)); | |
607fa7f2 | 4525 | SvUV_set(dstr, hash); |
765f542d | 4526 | } |
87a1ef3d SP |
4527 | SvLEN_set(dstr, len); |
4528 | SvCUR_set(dstr, cur); | |
765f542d NC |
4529 | SvREADONLY_on(dstr); |
4530 | SvFAKE_on(dstr); | |
4531 | /* Relesase a global SV mutex. */ | |
4532 | } | |
4533 | else | |
4534 | #endif | |
4535 | { /* Passes the swipe test. */ | |
4536 | SvPV_set(dstr, SvPVX(sstr)); | |
4537 | SvLEN_set(dstr, SvLEN(sstr)); | |
4538 | SvCUR_set(dstr, SvCUR(sstr)); | |
4539 | ||
4540 | SvTEMP_off(dstr); | |
4541 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4542 | SvPV_set(sstr, Nullch); | |
4543 | SvLEN_set(sstr, 0); | |
4544 | SvCUR_set(sstr, 0); | |
4545 | SvTEMP_off(sstr); | |
4546 | } | |
4547 | } | |
9aa983d2 | 4548 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4549 | SvUTF8_on(dstr); |
79072805 | 4550 | /*SUPPRESS 560*/ |
8990e307 | 4551 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4552 | SvNOKp_on(dstr); |
4553 | if (sflags & SVf_NOK) | |
4554 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 4555 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 | 4556 | } |
8990e307 | 4557 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4558 | (void)SvIOKp_on(dstr); |
4559 | if (sflags & SVf_IOK) | |
4560 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4561 | if (sflags & SVf_IVisUV) |
25da4f38 | 4562 | SvIsUV_on(dstr); |
45977657 | 4563 | SvIV_set(dstr, SvIVX(sstr)); |
79072805 | 4564 | } |
92f0c265 | 4565 | if (SvVOK(sstr)) { |
7a5fa8a2 | 4566 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
ece467f9 JP |
4567 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, |
4568 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4569 | SvRMAGICAL_on(dstr); |
7a5fa8a2 | 4570 | } |
79072805 | 4571 | } |
8990e307 | 4572 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4573 | if (sflags & SVf_IOK) |
4574 | (void)SvIOK_only(dstr); | |
4575 | else { | |
9cbac4c7 DM |
4576 | (void)SvOK_off(dstr); |
4577 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4578 | } |
4579 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4580 | if (sflags & SVf_IVisUV) |
25da4f38 | 4581 | SvIsUV_on(dstr); |
45977657 | 4582 | SvIV_set(dstr, SvIVX(sstr)); |
3332b3c1 JH |
4583 | if (sflags & SVp_NOK) { |
4584 | if (sflags & SVf_NOK) | |
4585 | (void)SvNOK_on(dstr); | |
4586 | else | |
4587 | (void)SvNOKp_on(dstr); | |
9d6ce603 | 4588 | SvNV_set(dstr, SvNVX(sstr)); |
3332b3c1 JH |
4589 | } |
4590 | } | |
4591 | else if (sflags & SVp_NOK) { | |
4592 | if (sflags & SVf_NOK) | |
4593 | (void)SvNOK_only(dstr); | |
4594 | else { | |
9cbac4c7 | 4595 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4596 | SvNOKp_on(dstr); |
4597 | } | |
9d6ce603 | 4598 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 LW |
4599 | } |
4600 | else { | |
20408e3c | 4601 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4602 | if (ckWARN(WARN_MISC)) |
9014280d | 4603 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4604 | } |
4605 | else | |
4606 | (void)SvOK_off(dstr); | |
a0d0e21e | 4607 | } |
27c9684d AP |
4608 | if (SvTAINTED(sstr)) |
4609 | SvTAINT(dstr); | |
79072805 LW |
4610 | } |
4611 | ||
954c1994 GS |
4612 | /* |
4613 | =for apidoc sv_setsv_mg | |
4614 | ||
4615 | Like C<sv_setsv>, but also handles 'set' magic. | |
4616 | ||
4617 | =cut | |
4618 | */ | |
4619 | ||
79072805 | 4620 | void |
864dbfa3 | 4621 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4622 | { |
4623 | sv_setsv(dstr,sstr); | |
4624 | SvSETMAGIC(dstr); | |
4625 | } | |
4626 | ||
ed252734 NC |
4627 | #ifdef PERL_COPY_ON_WRITE |
4628 | SV * | |
4629 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4630 | { | |
4631 | STRLEN cur = SvCUR(sstr); | |
4632 | STRLEN len = SvLEN(sstr); | |
4633 | register char *new_pv; | |
4634 | ||
4635 | if (DEBUG_C_TEST) { | |
4636 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4637 | sstr, dstr); | |
4638 | sv_dump(sstr); | |
4639 | if (dstr) | |
4640 | sv_dump(dstr); | |
4641 | } | |
4642 | ||
4643 | if (dstr) { | |
4644 | if (SvTHINKFIRST(dstr)) | |
4645 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
4646 | else if (SvPVX(dstr)) | |
4647 | Safefree(SvPVX(dstr)); | |
4648 | } | |
4649 | else | |
4650 | new_SV(dstr); | |
b988aa42 | 4651 | (void)SvUPGRADE (dstr, SVt_PVIV); |
ed252734 NC |
4652 | |
4653 | assert (SvPOK(sstr)); | |
4654 | assert (SvPOKp(sstr)); | |
4655 | assert (!SvIOK(sstr)); | |
4656 | assert (!SvIOKp(sstr)); | |
4657 | assert (!SvNOK(sstr)); | |
4658 | assert (!SvNOKp(sstr)); | |
4659 | ||
4660 | if (SvIsCOW(sstr)) { | |
4661 | ||
4662 | if (SvLEN(sstr) == 0) { | |
4663 | /* source is a COW shared hash key. */ | |
4664 | UV hash = SvUVX(sstr); | |
4665 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4666 | "Fast copy on write: Sharing hash\n")); | |
607fa7f2 | 4667 | SvUV_set(dstr, hash); |
ed252734 NC |
4668 | new_pv = sharepvn(SvPVX(sstr), (SvUTF8(sstr)?-cur:cur), hash); |
4669 | goto common_exit; | |
4670 | } | |
4671 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4672 | } else { | |
4673 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
b988aa42 | 4674 | (void)SvUPGRADE (sstr, SVt_PVIV); |
ed252734 NC |
4675 | SvREADONLY_on(sstr); |
4676 | SvFAKE_on(sstr); | |
4677 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4678 | "Fast copy on write: Converting sstr to COW\n")); | |
4679 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4680 | } | |
4681 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
4682 | new_pv = SvPVX(sstr); | |
4683 | ||
4684 | common_exit: | |
4685 | SvPV_set(dstr, new_pv); | |
4686 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4687 | if (SvUTF8(sstr)) | |
4688 | SvUTF8_on(dstr); | |
87a1ef3d SP |
4689 | SvLEN_set(dstr, len); |
4690 | SvCUR_set(dstr, cur); | |
ed252734 NC |
4691 | if (DEBUG_C_TEST) { |
4692 | sv_dump(dstr); | |
4693 | } | |
4694 | return dstr; | |
4695 | } | |
4696 | #endif | |
4697 | ||
954c1994 GS |
4698 | /* |
4699 | =for apidoc sv_setpvn | |
4700 | ||
4701 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
4702 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
4703 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
4704 | |
4705 | =cut | |
4706 | */ | |
4707 | ||
ef50df4b | 4708 | void |
864dbfa3 | 4709 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4710 | { |
c6f8c383 | 4711 | register char *dptr; |
22c522df | 4712 | |
765f542d | 4713 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4714 | if (!ptr) { |
a0d0e21e | 4715 | (void)SvOK_off(sv); |
463ee0b2 LW |
4716 | return; |
4717 | } | |
22c522df JH |
4718 | else { |
4719 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
a3b680e6 | 4720 | const IV iv = len; |
9c5ffd7c JH |
4721 | if (iv < 0) |
4722 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4723 | } |
6fc92669 | 4724 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4725 | |
79072805 | 4726 | SvGROW(sv, len + 1); |
c6f8c383 GA |
4727 | dptr = SvPVX(sv); |
4728 | Move(ptr,dptr,len,char); | |
4729 | dptr[len] = '\0'; | |
79072805 | 4730 | SvCUR_set(sv, len); |
1aa99e6b | 4731 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4732 | SvTAINT(sv); |
79072805 LW |
4733 | } |
4734 | ||
954c1994 GS |
4735 | /* |
4736 | =for apidoc sv_setpvn_mg | |
4737 | ||
4738 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4739 | ||
4740 | =cut | |
4741 | */ | |
4742 | ||
79072805 | 4743 | void |
864dbfa3 | 4744 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4745 | { |
4746 | sv_setpvn(sv,ptr,len); | |
4747 | SvSETMAGIC(sv); | |
4748 | } | |
4749 | ||
954c1994 GS |
4750 | /* |
4751 | =for apidoc sv_setpv | |
4752 | ||
4753 | Copies a string into an SV. The string must be null-terminated. Does not | |
4754 | handle 'set' magic. See C<sv_setpv_mg>. | |
4755 | ||
4756 | =cut | |
4757 | */ | |
4758 | ||
ef50df4b | 4759 | void |
864dbfa3 | 4760 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4761 | { |
4762 | register STRLEN len; | |
4763 | ||
765f542d | 4764 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4765 | if (!ptr) { |
a0d0e21e | 4766 | (void)SvOK_off(sv); |
463ee0b2 LW |
4767 | return; |
4768 | } | |
79072805 | 4769 | len = strlen(ptr); |
6fc92669 | 4770 | (void)SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4771 | |
79072805 | 4772 | SvGROW(sv, len + 1); |
463ee0b2 | 4773 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4774 | SvCUR_set(sv, len); |
1aa99e6b | 4775 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4776 | SvTAINT(sv); |
4777 | } | |
4778 | ||
954c1994 GS |
4779 | /* |
4780 | =for apidoc sv_setpv_mg | |
4781 | ||
4782 | Like C<sv_setpv>, but also handles 'set' magic. | |
4783 | ||
4784 | =cut | |
4785 | */ | |
4786 | ||
463ee0b2 | 4787 | void |
864dbfa3 | 4788 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4789 | { |
4790 | sv_setpv(sv,ptr); | |
4791 | SvSETMAGIC(sv); | |
4792 | } | |
4793 | ||
954c1994 GS |
4794 | /* |
4795 | =for apidoc sv_usepvn | |
4796 | ||
4797 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4798 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4799 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4800 | string length, C<len>, must be supplied. This function will realloc the | |
4801 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4802 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4803 | See C<sv_usepvn_mg>. | |
4804 | ||
4805 | =cut | |
4806 | */ | |
4807 | ||
ef50df4b | 4808 | void |
864dbfa3 | 4809 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4810 | { |
765f542d | 4811 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
c6f8c383 | 4812 | (void)SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4813 | if (!ptr) { |
a0d0e21e | 4814 | (void)SvOK_off(sv); |
463ee0b2 LW |
4815 | return; |
4816 | } | |
8bd4d4c5 NC |
4817 | if (SvPVX(sv)) |
4818 | SvPV_free(sv); | |
463ee0b2 | 4819 | Renew(ptr, len+1, char); |
f880fe2f | 4820 | SvPV_set(sv, ptr); |
463ee0b2 LW |
4821 | SvCUR_set(sv, len); |
4822 | SvLEN_set(sv, len+1); | |
4823 | *SvEND(sv) = '\0'; | |
1aa99e6b | 4824 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4825 | SvTAINT(sv); |
79072805 LW |
4826 | } |
4827 | ||
954c1994 GS |
4828 | /* |
4829 | =for apidoc sv_usepvn_mg | |
4830 | ||
4831 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4832 | ||
4833 | =cut | |
4834 | */ | |
4835 | ||
ef50df4b | 4836 | void |
864dbfa3 | 4837 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4838 | { |
51c1089b | 4839 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4840 | SvSETMAGIC(sv); |
4841 | } | |
4842 | ||
765f542d NC |
4843 | #ifdef PERL_COPY_ON_WRITE |
4844 | /* Need to do this *after* making the SV normal, as we need the buffer | |
4845 | pointer to remain valid until after we've copied it. If we let go too early, | |
4846 | another thread could invalidate it by unsharing last of the same hash key | |
4847 | (which it can do by means other than releasing copy-on-write Svs) | |
4848 | or by changing the other copy-on-write SVs in the loop. */ | |
4849 | STATIC void | |
4850 | S_sv_release_COW(pTHX_ register SV *sv, char *pvx, STRLEN cur, STRLEN len, | |
4851 | U32 hash, SV *after) | |
4852 | { | |
4853 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4854 | /* we need to find the SV pointing to us. */ | |
4855 | SV *current = SV_COW_NEXT_SV(after); | |
7a5fa8a2 | 4856 | |
765f542d NC |
4857 | if (current == sv) { |
4858 | /* The SV we point to points back to us (there were only two of us | |
4859 | in the loop.) | |
4860 | Hence other SV is no longer copy on write either. */ | |
4861 | SvFAKE_off(after); | |
4862 | SvREADONLY_off(after); | |
4863 | } else { | |
4864 | /* We need to follow the pointers around the loop. */ | |
4865 | SV *next; | |
4866 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4867 | assert (next); | |
4868 | current = next; | |
4869 | /* don't loop forever if the structure is bust, and we have | |
4870 | a pointer into a closed loop. */ | |
4871 | assert (current != after); | |
e419cbc5 | 4872 | assert (SvPVX(current) == pvx); |
765f542d NC |
4873 | } |
4874 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4875 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4876 | } |
4877 | } else { | |
4878 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)cur : cur, hash); | |
4879 | } | |
4880 | } | |
4881 | ||
4882 | int | |
4883 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4884 | { | |
4885 | if (SvIsCOW(sv)) | |
4886 | sv_force_normal_flags(sv, 0); | |
0c34ef67 MHM |
4887 | SvOOK_off(sv); |
4888 | return 0; | |
765f542d NC |
4889 | } |
4890 | #endif | |
645c22ef DM |
4891 | /* |
4892 | =for apidoc sv_force_normal_flags | |
4893 | ||
4894 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4895 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4896 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4897 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4898 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4899 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4900 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4901 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4902 | with flags set to 0. | |
645c22ef DM |
4903 | |
4904 | =cut | |
4905 | */ | |
4906 | ||
6fc92669 | 4907 | void |
840a7b70 | 4908 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4909 | { |
765f542d NC |
4910 | #ifdef PERL_COPY_ON_WRITE |
4911 | if (SvREADONLY(sv)) { | |
4912 | /* At this point I believe I should acquire a global SV mutex. */ | |
4913 | if (SvFAKE(sv)) { | |
4914 | char *pvx = SvPVX(sv); | |
4915 | STRLEN len = SvLEN(sv); | |
4916 | STRLEN cur = SvCUR(sv); | |
4917 | U32 hash = SvUVX(sv); | |
4918 | SV *next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ | |
46187eeb NC |
4919 | if (DEBUG_C_TEST) { |
4920 | PerlIO_printf(Perl_debug_log, | |
4921 | "Copy on write: Force normal %ld\n", | |
4922 | (long) flags); | |
e419cbc5 | 4923 | sv_dump(sv); |
46187eeb | 4924 | } |
765f542d NC |
4925 | SvFAKE_off(sv); |
4926 | SvREADONLY_off(sv); | |
4927 | /* This SV doesn't own the buffer, so need to New() a new one: */ | |
f880fe2f | 4928 | SvPV_set(sv, (char*)0); |
87a1ef3d | 4929 | SvLEN_set(sv, 0); |
765f542d NC |
4930 | if (flags & SV_COW_DROP_PV) { |
4931 | /* OK, so we don't need to copy our buffer. */ | |
4932 | SvPOK_off(sv); | |
4933 | } else { | |
4934 | SvGROW(sv, cur + 1); | |
4935 | Move(pvx,SvPVX(sv),cur,char); | |
87a1ef3d | 4936 | SvCUR_set(sv, cur); |
765f542d NC |
4937 | *SvEND(sv) = '\0'; |
4938 | } | |
e419cbc5 | 4939 | sv_release_COW(sv, pvx, cur, len, hash, next); |
46187eeb | 4940 | if (DEBUG_C_TEST) { |
e419cbc5 | 4941 | sv_dump(sv); |
46187eeb | 4942 | } |
765f542d | 4943 | } |
923e4eb5 | 4944 | else if (IN_PERL_RUNTIME) |
765f542d NC |
4945 | Perl_croak(aTHX_ PL_no_modify); |
4946 | /* At this point I believe that I can drop the global SV mutex. */ | |
4947 | } | |
4948 | #else | |
2213622d | 4949 | if (SvREADONLY(sv)) { |
1c846c1f NIS |
4950 | if (SvFAKE(sv)) { |
4951 | char *pvx = SvPVX(sv); | |
1df70142 | 4952 | const int is_utf8 = SvUTF8(sv); |
1c846c1f NIS |
4953 | STRLEN len = SvCUR(sv); |
4954 | U32 hash = SvUVX(sv); | |
10bcdfd6 NC |
4955 | SvFAKE_off(sv); |
4956 | SvREADONLY_off(sv); | |
f880fe2f | 4957 | SvPV_set(sv, (char*)0); |
b162af07 | 4958 | SvLEN_set(sv, 0); |
1c846c1f NIS |
4959 | SvGROW(sv, len + 1); |
4960 | Move(pvx,SvPVX(sv),len,char); | |
4961 | *SvEND(sv) = '\0'; | |
5c98da1c | 4962 | unsharepvn(pvx, is_utf8 ? -(I32)len : len, hash); |
1c846c1f | 4963 | } |
923e4eb5 | 4964 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 4965 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 4966 | } |
765f542d | 4967 | #endif |
2213622d | 4968 | if (SvROK(sv)) |
840a7b70 | 4969 | sv_unref_flags(sv, flags); |
6fc92669 GS |
4970 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
4971 | sv_unglob(sv); | |
0f15f207 | 4972 | } |
1c846c1f | 4973 | |
645c22ef DM |
4974 | /* |
4975 | =for apidoc sv_force_normal | |
4976 | ||
4977 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4978 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
4979 | an xpvmg. See also C<sv_force_normal_flags>. | |
4980 | ||
4981 | =cut | |
4982 | */ | |
4983 | ||
840a7b70 IZ |
4984 | void |
4985 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
4986 | { | |
4987 | sv_force_normal_flags(sv, 0); | |
4988 | } | |
4989 | ||
954c1994 GS |
4990 | /* |
4991 | =for apidoc sv_chop | |
4992 | ||
1c846c1f | 4993 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
4994 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
4995 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 4996 | string. Uses the "OOK hack". |
31869a79 AE |
4997 | Beware: after this function returns, C<ptr> and SvPVX(sv) may no longer |
4998 | refer to the same chunk of data. | |
954c1994 GS |
4999 | |
5000 | =cut | |
5001 | */ | |
5002 | ||
79072805 | 5003 | void |
f54cb97a | 5004 | Perl_sv_chop(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
5005 | { |
5006 | register STRLEN delta; | |
a0d0e21e | 5007 | if (!ptr || !SvPOKp(sv)) |
79072805 | 5008 | return; |
31869a79 | 5009 | delta = ptr - SvPVX(sv); |
2213622d | 5010 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
5011 | if (SvTYPE(sv) < SVt_PVIV) |
5012 | sv_upgrade(sv,SVt_PVIV); | |
5013 | ||
5014 | if (!SvOOK(sv)) { | |
50483b2c | 5015 | if (!SvLEN(sv)) { /* make copy of shared string */ |
f54cb97a | 5016 | const char *pvx = SvPVX(sv); |
50483b2c JD |
5017 | STRLEN len = SvCUR(sv); |
5018 | SvGROW(sv, len + 1); | |
5019 | Move(pvx,SvPVX(sv),len,char); | |
5020 | *SvEND(sv) = '\0'; | |
5021 | } | |
45977657 | 5022 | SvIV_set(sv, 0); |
a4bfb290 AB |
5023 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
5024 | and we do that anyway inside the SvNIOK_off | |
5025 | */ | |
7a5fa8a2 | 5026 | SvFLAGS(sv) |= SVf_OOK; |
79072805 | 5027 | } |
a4bfb290 | 5028 | SvNIOK_off(sv); |
b162af07 SP |
5029 | SvLEN_set(sv, SvLEN(sv) - delta); |
5030 | SvCUR_set(sv, SvCUR(sv) - delta); | |
f880fe2f | 5031 | SvPV_set(sv, SvPVX(sv) + delta); |
45977657 | 5032 | SvIV_set(sv, SvIVX(sv) + delta); |
79072805 LW |
5033 | } |
5034 | ||
09540bc3 JH |
5035 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); |
5036 | * this function provided for binary compatibility only | |
5037 | */ | |
5038 | ||
5039 | void | |
5040 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
5041 | { | |
5042 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
5043 | } | |
5044 | ||
954c1994 GS |
5045 | /* |
5046 | =for apidoc sv_catpvn | |
5047 | ||
5048 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5049 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5050 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 5051 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 5052 | |
8d6d96c1 HS |
5053 | =for apidoc sv_catpvn_flags |
5054 | ||
5055 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5056 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5057 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
5058 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
5059 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
5060 | in terms of this function. | |
5061 | ||
5062 | =cut | |
5063 | */ | |
5064 | ||
5065 | void | |
5066 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
5067 | { | |
5068 | STRLEN dlen; | |
f54cb97a | 5069 | const char *dstr = SvPV_force_flags(dsv, dlen, flags); |
8d6d96c1 | 5070 | |
8d6d96c1 HS |
5071 | SvGROW(dsv, dlen + slen + 1); |
5072 | if (sstr == dstr) | |
5073 | sstr = SvPVX(dsv); | |
5074 | Move(sstr, SvPVX(dsv) + dlen, slen, char); | |
b162af07 | 5075 | SvCUR_set(dsv, SvCUR(dsv) + slen); |
8d6d96c1 HS |
5076 | *SvEND(dsv) = '\0'; |
5077 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
5078 | SvTAINT(dsv); | |
79072805 LW |
5079 | } |
5080 | ||
954c1994 GS |
5081 | /* |
5082 | =for apidoc sv_catpvn_mg | |
5083 | ||
5084 | Like C<sv_catpvn>, but also handles 'set' magic. | |
5085 | ||
5086 | =cut | |
5087 | */ | |
5088 | ||
79072805 | 5089 | void |
864dbfa3 | 5090 | Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
5091 | { |
5092 | sv_catpvn(sv,ptr,len); | |
5093 | SvSETMAGIC(sv); | |
5094 | } | |
5095 | ||
09540bc3 JH |
5096 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); |
5097 | * this function provided for binary compatibility only | |
5098 | */ | |
5099 | ||
5100 | void | |
5101 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
5102 | { | |
5103 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
5104 | } | |
5105 | ||
954c1994 GS |
5106 | /* |
5107 | =for apidoc sv_catsv | |
5108 | ||
13e8c8e3 JH |
5109 | Concatenates the string from SV C<ssv> onto the end of the string in |
5110 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
5111 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 5112 | |
8d6d96c1 HS |
5113 | =for apidoc sv_catsv_flags |
5114 | ||
5115 | Concatenates the string from SV C<ssv> onto the end of the string in | |
5116 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
5117 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
5118 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
5119 | ||
5120 | =cut */ | |
5121 | ||
ef50df4b | 5122 | void |
8d6d96c1 | 5123 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 5124 | { |
13e8c8e3 JH |
5125 | char *spv; |
5126 | STRLEN slen; | |
46199a12 | 5127 | if (!ssv) |
79072805 | 5128 | return; |
46199a12 | 5129 | if ((spv = SvPV(ssv, slen))) { |
4fd84b44 AD |
5130 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
5131 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
8cf8f3d1 NIS |
5132 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously |
5133 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4fd84b44 AD |
5134 | dsv->sv_flags doesn't have that bit set. |
5135 | Andy Dougherty 12 Oct 2001 | |
5136 | */ | |
5137 | I32 sutf8 = DO_UTF8(ssv); | |
5138 | I32 dutf8; | |
13e8c8e3 | 5139 | |
8d6d96c1 HS |
5140 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
5141 | mg_get(dsv); | |
5142 | dutf8 = DO_UTF8(dsv); | |
5143 | ||
5144 | if (dutf8 != sutf8) { | |
13e8c8e3 | 5145 | if (dutf8) { |
46199a12 | 5146 | /* Not modifying source SV, so taking a temporary copy. */ |
8d6d96c1 | 5147 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 5148 | |
46199a12 | 5149 | sv_utf8_upgrade(csv); |
8d6d96c1 | 5150 | spv = SvPV(csv, slen); |
13e8c8e3 | 5151 | } |
8d6d96c1 HS |
5152 | else |
5153 | sv_utf8_upgrade_nomg(dsv); | |
e84ff256 | 5154 | } |
8d6d96c1 | 5155 | sv_catpvn_nomg(dsv, spv, slen); |
560a288e | 5156 | } |
79072805 LW |
5157 | } |
5158 | ||
954c1994 GS |
5159 | /* |
5160 | =for apidoc sv_catsv_mg | |
5161 | ||
5162 | Like C<sv_catsv>, but also handles 'set' magic. | |
5163 | ||
5164 | =cut | |
5165 | */ | |
5166 | ||
79072805 | 5167 | void |
46199a12 | 5168 | Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv) |
ef50df4b | 5169 | { |
46199a12 JH |
5170 | sv_catsv(dsv,ssv); |
5171 | SvSETMAGIC(dsv); | |
ef50df4b GS |
5172 | } |
5173 | ||
954c1994 GS |
5174 | /* |
5175 | =for apidoc sv_catpv | |
5176 | ||
5177 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
5178 | If the SV has the UTF-8 status set, then the bytes appended should be |
5179 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 5180 | |
d5ce4a7c | 5181 | =cut */ |
954c1994 | 5182 | |
ef50df4b | 5183 | void |
0c981600 | 5184 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
5185 | { |
5186 | register STRLEN len; | |
463ee0b2 | 5187 | STRLEN tlen; |
748a9306 | 5188 | char *junk; |
79072805 | 5189 | |
0c981600 | 5190 | if (!ptr) |
79072805 | 5191 | return; |
748a9306 | 5192 | junk = SvPV_force(sv, tlen); |
0c981600 | 5193 | len = strlen(ptr); |
463ee0b2 | 5194 | SvGROW(sv, tlen + len + 1); |
0c981600 JH |
5195 | if (ptr == junk) |
5196 | ptr = SvPVX(sv); | |
5197 | Move(ptr,SvPVX(sv)+tlen,len+1,char); | |
b162af07 | 5198 | SvCUR_set(sv, SvCUR(sv) + len); |
d41ff1b8 | 5199 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 5200 | SvTAINT(sv); |
79072805 LW |
5201 | } |
5202 | ||
954c1994 GS |
5203 | /* |
5204 | =for apidoc sv_catpv_mg | |
5205 | ||
5206 | Like C<sv_catpv>, but also handles 'set' magic. | |
5207 | ||
5208 | =cut | |
5209 | */ | |
5210 | ||
ef50df4b | 5211 | void |
0c981600 | 5212 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 5213 | { |
0c981600 | 5214 | sv_catpv(sv,ptr); |
ef50df4b GS |
5215 | SvSETMAGIC(sv); |
5216 | } | |
5217 | ||
645c22ef DM |
5218 | /* |
5219 | =for apidoc newSV | |
5220 | ||
5221 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
5222 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
5223 | macro. | |
5224 | ||
5225 | =cut | |
5226 | */ | |
5227 | ||
79072805 | 5228 | SV * |
864dbfa3 | 5229 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
5230 | { |
5231 | register SV *sv; | |
1c846c1f | 5232 | |
4561caa4 | 5233 | new_SV(sv); |
79072805 LW |
5234 | if (len) { |
5235 | sv_upgrade(sv, SVt_PV); | |
5236 | SvGROW(sv, len + 1); | |
5237 | } | |
5238 | return sv; | |
5239 | } | |
954c1994 | 5240 | /* |
92110913 | 5241 | =for apidoc sv_magicext |
954c1994 | 5242 | |
68795e93 | 5243 | Adds magic to an SV, upgrading it if necessary. Applies the |
2d8d5d5a | 5244 | supplied vtable and returns a pointer to the magic added. |
92110913 | 5245 | |
2d8d5d5a SH |
5246 | Note that C<sv_magicext> will allow things that C<sv_magic> will not. |
5247 | In particular, you can add magic to SvREADONLY SVs, and add more than | |
5248 | one instance of the same 'how'. | |
645c22ef | 5249 | |
2d8d5d5a SH |
5250 | If C<namlen> is greater than zero then a C<savepvn> I<copy> of C<name> is |
5251 | stored, if C<namlen> is zero then C<name> is stored as-is and - as another | |
5252 | special case - if C<(name && namlen == HEf_SVKEY)> then C<name> is assumed | |
5253 | to contain an C<SV*> and is stored as-is with its REFCNT incremented. | |
92110913 | 5254 | |
2d8d5d5a | 5255 | (This is now used as a subroutine by C<sv_magic>.) |
954c1994 GS |
5256 | |
5257 | =cut | |
5258 | */ | |
92110913 | 5259 | MAGIC * |
e1ec3a88 | 5260 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, const MGVTBL *vtable, |
92110913 | 5261 | const char* name, I32 namlen) |
79072805 LW |
5262 | { |
5263 | MAGIC* mg; | |
68795e93 | 5264 | |
92110913 NIS |
5265 | if (SvTYPE(sv) < SVt_PVMG) { |
5266 | (void)SvUPGRADE(sv, SVt_PVMG); | |
463ee0b2 | 5267 | } |
79072805 LW |
5268 | Newz(702,mg, 1, MAGIC); |
5269 | mg->mg_moremagic = SvMAGIC(sv); | |
b162af07 | 5270 | SvMAGIC_set(sv, mg); |
75f9d97a | 5271 | |
05f95b08 SB |
5272 | /* Sometimes a magic contains a reference loop, where the sv and |
5273 | object refer to each other. To prevent a reference loop that | |
5274 | would prevent such objects being freed, we look for such loops | |
5275 | and if we find one we avoid incrementing the object refcount. | |
87f0b213 JH |
5276 | |
5277 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 5278 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
5279 | |
5280 | */ | |
14befaf4 DM |
5281 | if (!obj || obj == sv || |
5282 | how == PERL_MAGIC_arylen || | |
5283 | how == PERL_MAGIC_qr || | |
8d2f4536 | 5284 | how == PERL_MAGIC_symtab || |
75f9d97a JH |
5285 | (SvTYPE(obj) == SVt_PVGV && |
5286 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
5287 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 5288 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 5289 | { |
8990e307 | 5290 | mg->mg_obj = obj; |
75f9d97a | 5291 | } |
85e6fe83 | 5292 | else { |
8990e307 | 5293 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
5294 | mg->mg_flags |= MGf_REFCOUNTED; |
5295 | } | |
b5ccf5f2 YST |
5296 | |
5297 | /* Normal self-ties simply pass a null object, and instead of | |
5298 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
5299 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
5300 | with an RV obj pointing to the glob containing the PVIO. In | |
5301 | this case, to avoid a reference loop, we need to weaken the | |
5302 | reference. | |
5303 | */ | |
5304 | ||
5305 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
5306 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
5307 | { | |
5308 | sv_rvweaken(obj); | |
5309 | } | |
5310 | ||
79072805 | 5311 | mg->mg_type = how; |
565764a8 | 5312 | mg->mg_len = namlen; |
9cbac4c7 | 5313 | if (name) { |
92110913 | 5314 | if (namlen > 0) |
1edc1566 | 5315 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 5316 | else if (namlen == HEf_SVKEY) |
1edc1566 | 5317 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 5318 | else |
92110913 | 5319 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 5320 | } |
92110913 | 5321 | mg->mg_virtual = vtable; |
68795e93 | 5322 | |
92110913 NIS |
5323 | mg_magical(sv); |
5324 | if (SvGMAGICAL(sv)) | |
5325 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
5326 | return mg; | |
5327 | } | |
5328 | ||
5329 | /* | |
5330 | =for apidoc sv_magic | |
1c846c1f | 5331 | |
92110913 NIS |
5332 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
5333 | then adds a new magic item of type C<how> to the head of the magic list. | |
5334 | ||
2d8d5d5a SH |
5335 | See C<sv_magicext> (which C<sv_magic> now calls) for a description of the |
5336 | handling of the C<name> and C<namlen> arguments. | |
5337 | ||
4509d3fb SB |
5338 | You need to use C<sv_magicext> to add magic to SvREADONLY SVs and also |
5339 | to add more than one instance of the same 'how'. | |
5340 | ||
92110913 NIS |
5341 | =cut |
5342 | */ | |
5343 | ||
5344 | void | |
5345 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 5346 | { |
e1ec3a88 | 5347 | const MGVTBL *vtable = 0; |
92110913 | 5348 | MAGIC* mg; |
92110913 | 5349 | |
765f542d NC |
5350 | #ifdef PERL_COPY_ON_WRITE |
5351 | if (SvIsCOW(sv)) | |
5352 | sv_force_normal_flags(sv, 0); | |
5353 | #endif | |
92110913 | 5354 | if (SvREADONLY(sv)) { |
923e4eb5 | 5355 | if (IN_PERL_RUNTIME |
92110913 NIS |
5356 | && how != PERL_MAGIC_regex_global |
5357 | && how != PERL_MAGIC_bm | |
5358 | && how != PERL_MAGIC_fm | |
5359 | && how != PERL_MAGIC_sv | |
e6469971 | 5360 | && how != PERL_MAGIC_backref |
92110913 NIS |
5361 | ) |
5362 | { | |
5363 | Perl_croak(aTHX_ PL_no_modify); | |
5364 | } | |
5365 | } | |
5366 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
5367 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
5368 | /* sv_magic() refuses to add a magic of the same 'how' as an |
5369 | existing one | |
92110913 NIS |
5370 | */ |
5371 | if (how == PERL_MAGIC_taint) | |
5372 | mg->mg_len |= 1; | |
5373 | return; | |
5374 | } | |
5375 | } | |
68795e93 | 5376 | |
79072805 | 5377 | switch (how) { |
14befaf4 | 5378 | case PERL_MAGIC_sv: |
92110913 | 5379 | vtable = &PL_vtbl_sv; |
79072805 | 5380 | break; |
14befaf4 | 5381 | case PERL_MAGIC_overload: |
92110913 | 5382 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 5383 | break; |
14befaf4 | 5384 | case PERL_MAGIC_overload_elem: |
92110913 | 5385 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 5386 | break; |
14befaf4 | 5387 | case PERL_MAGIC_overload_table: |
92110913 | 5388 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 5389 | break; |
14befaf4 | 5390 | case PERL_MAGIC_bm: |
92110913 | 5391 | vtable = &PL_vtbl_bm; |
79072805 | 5392 | break; |
14befaf4 | 5393 | case PERL_MAGIC_regdata: |
92110913 | 5394 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 5395 | break; |
14befaf4 | 5396 | case PERL_MAGIC_regdatum: |
92110913 | 5397 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 5398 | break; |
14befaf4 | 5399 | case PERL_MAGIC_env: |
92110913 | 5400 | vtable = &PL_vtbl_env; |
79072805 | 5401 | break; |
14befaf4 | 5402 | case PERL_MAGIC_fm: |
92110913 | 5403 | vtable = &PL_vtbl_fm; |
55497cff | 5404 | break; |
14befaf4 | 5405 | case PERL_MAGIC_envelem: |
92110913 | 5406 | vtable = &PL_vtbl_envelem; |
79072805 | 5407 | break; |
14befaf4 | 5408 | case PERL_MAGIC_regex_global: |
92110913 | 5409 | vtable = &PL_vtbl_mglob; |
93a17b20 | 5410 | break; |
14befaf4 | 5411 | case PERL_MAGIC_isa: |
92110913 | 5412 | vtable = &PL_vtbl_isa; |
463ee0b2 | 5413 | break; |
14befaf4 | 5414 | case PERL_MAGIC_isaelem: |
92110913 | 5415 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 5416 | break; |
14befaf4 | 5417 | case PERL_MAGIC_nkeys: |
92110913 | 5418 | vtable = &PL_vtbl_nkeys; |
16660edb | 5419 | break; |
14befaf4 | 5420 | case PERL_MAGIC_dbfile: |
92110913 | 5421 | vtable = 0; |
93a17b20 | 5422 | break; |
14befaf4 | 5423 | case PERL_MAGIC_dbline: |
92110913 | 5424 | vtable = &PL_vtbl_dbline; |
79072805 | 5425 | break; |
36477c24 | 5426 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 5427 | case PERL_MAGIC_collxfrm: |
92110913 | 5428 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 5429 | break; |
36477c24 | 5430 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 5431 | case PERL_MAGIC_tied: |
92110913 | 5432 | vtable = &PL_vtbl_pack; |
463ee0b2 | 5433 | break; |
14befaf4 DM |
5434 | case PERL_MAGIC_tiedelem: |
5435 | case PERL_MAGIC_tiedscalar: | |
92110913 | 5436 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 5437 | break; |
14befaf4 | 5438 | case PERL_MAGIC_qr: |
92110913 | 5439 | vtable = &PL_vtbl_regexp; |
c277df42 | 5440 | break; |
14befaf4 | 5441 | case PERL_MAGIC_sig: |
92110913 | 5442 | vtable = &PL_vtbl_sig; |
79072805 | 5443 | break; |
14befaf4 | 5444 | case PERL_MAGIC_sigelem: |
92110913 | 5445 | vtable = &PL_vtbl_sigelem; |
79072805 | 5446 | break; |
14befaf4 | 5447 | case PERL_MAGIC_taint: |
92110913 | 5448 | vtable = &PL_vtbl_taint; |
463ee0b2 | 5449 | break; |
14befaf4 | 5450 | case PERL_MAGIC_uvar: |
92110913 | 5451 | vtable = &PL_vtbl_uvar; |
79072805 | 5452 | break; |
14befaf4 | 5453 | case PERL_MAGIC_vec: |
92110913 | 5454 | vtable = &PL_vtbl_vec; |
79072805 | 5455 | break; |
a3874608 | 5456 | case PERL_MAGIC_arylen_p: |
bfcb3514 | 5457 | case PERL_MAGIC_rhash: |
8d2f4536 | 5458 | case PERL_MAGIC_symtab: |
ece467f9 JP |
5459 | case PERL_MAGIC_vstring: |
5460 | vtable = 0; | |
5461 | break; | |
7e8c5dac HS |
5462 | case PERL_MAGIC_utf8: |
5463 | vtable = &PL_vtbl_utf8; | |
5464 | break; | |
14befaf4 | 5465 | case PERL_MAGIC_substr: |
92110913 | 5466 | vtable = &PL_vtbl_substr; |
79072805 | 5467 | break; |
14befaf4 | 5468 | case PERL_MAGIC_defelem: |
92110913 | 5469 | vtable = &PL_vtbl_defelem; |
5f05dabc | 5470 | break; |
14befaf4 | 5471 | case PERL_MAGIC_glob: |
92110913 | 5472 | vtable = &PL_vtbl_glob; |
79072805 | 5473 | break; |
14befaf4 | 5474 | case PERL_MAGIC_arylen: |
92110913 | 5475 | vtable = &PL_vtbl_arylen; |
79072805 | 5476 | break; |
14befaf4 | 5477 | case PERL_MAGIC_pos: |
92110913 | 5478 | vtable = &PL_vtbl_pos; |
a0d0e21e | 5479 | break; |
14befaf4 | 5480 | case PERL_MAGIC_backref: |
92110913 | 5481 | vtable = &PL_vtbl_backref; |
810b8aa5 | 5482 | break; |
14befaf4 DM |
5483 | case PERL_MAGIC_ext: |
5484 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
5485 | /* Useful for attaching extension internal data to perl vars. */ |
5486 | /* Note that multiple extensions may clash if magical scalars */ | |
5487 | /* etc holding private data from one are passed to another. */ | |
a0d0e21e | 5488 | break; |
79072805 | 5489 | default: |
14befaf4 | 5490 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 5491 | } |
68795e93 | 5492 | |
92110913 | 5493 | /* Rest of work is done else where */ |
27da23d5 | 5494 | mg = sv_magicext(sv,obj,how,(MGVTBL*)vtable,name,namlen); |
68795e93 | 5495 | |
92110913 NIS |
5496 | switch (how) { |
5497 | case PERL_MAGIC_taint: | |
5498 | mg->mg_len = 1; | |
5499 | break; | |
5500 | case PERL_MAGIC_ext: | |
5501 | case PERL_MAGIC_dbfile: | |
5502 | SvRMAGICAL_on(sv); | |
5503 | break; | |
5504 | } | |
463ee0b2 LW |
5505 | } |
5506 | ||
c461cf8f JH |
5507 | /* |
5508 | =for apidoc sv_unmagic | |
5509 | ||
645c22ef | 5510 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
5511 | |
5512 | =cut | |
5513 | */ | |
5514 | ||
463ee0b2 | 5515 | int |
864dbfa3 | 5516 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
5517 | { |
5518 | MAGIC* mg; | |
5519 | MAGIC** mgp; | |
91bba347 | 5520 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
5521 | return 0; |
5522 | mgp = &SvMAGIC(sv); | |
5523 | for (mg = *mgp; mg; mg = *mgp) { | |
5524 | if (mg->mg_type == type) { | |
e1ec3a88 | 5525 | const MGVTBL* const vtbl = mg->mg_virtual; |
463ee0b2 | 5526 | *mgp = mg->mg_moremagic; |
1d7c1841 | 5527 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 5528 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 5529 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 5530 | if (mg->mg_len > 0) |
1edc1566 | 5531 | Safefree(mg->mg_ptr); |
565764a8 | 5532 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 5533 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
5534 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
5535 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 5536 | } |
a0d0e21e LW |
5537 | if (mg->mg_flags & MGf_REFCOUNTED) |
5538 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5539 | Safefree(mg); |
5540 | } | |
5541 | else | |
5542 | mgp = &mg->mg_moremagic; | |
79072805 | 5543 | } |
91bba347 | 5544 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5545 | SvMAGICAL_off(sv); |
06759ea0 | 5546 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5547 | } |
5548 | ||
5549 | return 0; | |
79072805 LW |
5550 | } |
5551 | ||
c461cf8f JH |
5552 | /* |
5553 | =for apidoc sv_rvweaken | |
5554 | ||
645c22ef DM |
5555 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5556 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5557 | push a back-reference to this RV onto the array of backreferences | |
5558 | associated with that magic. | |
c461cf8f JH |
5559 | |
5560 | =cut | |
5561 | */ | |
5562 | ||
810b8aa5 | 5563 | SV * |
864dbfa3 | 5564 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5565 | { |
5566 | SV *tsv; | |
5567 | if (!SvOK(sv)) /* let undefs pass */ | |
5568 | return sv; | |
5569 | if (!SvROK(sv)) | |
cea2e8a9 | 5570 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5571 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5572 | if (ckWARN(WARN_MISC)) |
9014280d | 5573 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5574 | return sv; |
5575 | } | |
5576 | tsv = SvRV(sv); | |
5577 | sv_add_backref(tsv, sv); | |
5578 | SvWEAKREF_on(sv); | |
1c846c1f | 5579 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5580 | return sv; |
5581 | } | |
5582 | ||
645c22ef DM |
5583 | /* Give tsv backref magic if it hasn't already got it, then push a |
5584 | * back-reference to sv onto the array associated with the backref magic. | |
5585 | */ | |
5586 | ||
810b8aa5 | 5587 | STATIC void |
cea2e8a9 | 5588 | S_sv_add_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5589 | { |
5590 | AV *av; | |
5591 | MAGIC *mg; | |
14befaf4 | 5592 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5593 | av = (AV*)mg->mg_obj; |
5594 | else { | |
5595 | av = newAV(); | |
14befaf4 | 5596 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
d99b02a1 DM |
5597 | /* av now has a refcnt of 2, which avoids it getting freed |
5598 | * before us during global cleanup. The extra ref is removed | |
5599 | * by magic_killbackrefs() when tsv is being freed */ | |
810b8aa5 | 5600 | } |
d91d49e8 | 5601 | if (AvFILLp(av) >= AvMAX(av)) { |
fdc9a813 | 5602 | I32 i; |
d91d49e8 | 5603 | SV **svp = AvARRAY(av); |
fdc9a813 AE |
5604 | for (i = AvFILLp(av); i >= 0; i--) |
5605 | if (!svp[i]) { | |
d91d49e8 MM |
5606 | svp[i] = sv; /* reuse the slot */ |
5607 | return; | |
5608 | } | |
d91d49e8 MM |
5609 | av_extend(av, AvFILLp(av)+1); |
5610 | } | |
5611 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5612 | } |
5613 | ||
645c22ef DM |
5614 | /* delete a back-reference to ourselves from the backref magic associated |
5615 | * with the SV we point to. | |
5616 | */ | |
5617 | ||
1c846c1f | 5618 | STATIC void |
cea2e8a9 | 5619 | S_sv_del_backref(pTHX_ SV *sv) |
810b8aa5 GS |
5620 | { |
5621 | AV *av; | |
5622 | SV **svp; | |
5623 | I32 i; | |
5624 | SV *tsv = SvRV(sv); | |
c04a4dfe | 5625 | MAGIC *mg = NULL; |
14befaf4 | 5626 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5627 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5628 | av = (AV *)mg->mg_obj; |
5629 | svp = AvARRAY(av); | |
fdc9a813 AE |
5630 | for (i = AvFILLp(av); i >= 0; i--) |
5631 | if (svp[i] == sv) svp[i] = Nullsv; | |
810b8aa5 GS |
5632 | } |
5633 | ||
954c1994 GS |
5634 | /* |
5635 | =for apidoc sv_insert | |
5636 | ||
5637 | Inserts a string at the specified offset/length within the SV. Similar to | |
5638 | the Perl substr() function. | |
5639 | ||
5640 | =cut | |
5641 | */ | |
5642 | ||
79072805 | 5643 | void |
e1ec3a88 | 5644 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, const char *little, STRLEN littlelen) |
79072805 LW |
5645 | { |
5646 | register char *big; | |
5647 | register char *mid; | |
5648 | register char *midend; | |
5649 | register char *bigend; | |
5650 | register I32 i; | |
6ff81951 | 5651 | STRLEN curlen; |
1c846c1f | 5652 | |
79072805 | 5653 | |
8990e307 | 5654 | if (!bigstr) |
cea2e8a9 | 5655 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5656 | SvPV_force(bigstr, curlen); |
60fa28ff | 5657 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5658 | if (offset + len > curlen) { |
5659 | SvGROW(bigstr, offset+len+1); | |
5660 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); | |
5661 | SvCUR_set(bigstr, offset+len); | |
5662 | } | |
79072805 | 5663 | |
69b47968 | 5664 | SvTAINT(bigstr); |
79072805 LW |
5665 | i = littlelen - len; |
5666 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5667 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5668 | mid = big + offset + len; |
5669 | midend = bigend = big + SvCUR(bigstr); | |
5670 | bigend += i; | |
5671 | *bigend = '\0'; | |
5672 | while (midend > mid) /* shove everything down */ | |
5673 | *--bigend = *--midend; | |
5674 | Move(little,big+offset,littlelen,char); | |
b162af07 | 5675 | SvCUR_set(bigstr, SvCUR(bigstr) + i); |
79072805 LW |
5676 | SvSETMAGIC(bigstr); |
5677 | return; | |
5678 | } | |
5679 | else if (i == 0) { | |
463ee0b2 | 5680 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5681 | SvSETMAGIC(bigstr); |
5682 | return; | |
5683 | } | |
5684 | ||
463ee0b2 | 5685 | big = SvPVX(bigstr); |
79072805 LW |
5686 | mid = big + offset; |
5687 | midend = mid + len; | |
5688 | bigend = big + SvCUR(bigstr); | |
5689 | ||
5690 | if (midend > bigend) | |
cea2e8a9 | 5691 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5692 | |
5693 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5694 | if (littlelen) { | |
5695 | Move(little, mid, littlelen,char); | |
5696 | mid += littlelen; | |
5697 | } | |
5698 | i = bigend - midend; | |
5699 | if (i > 0) { | |
5700 | Move(midend, mid, i,char); | |
5701 | mid += i; | |
5702 | } | |
5703 | *mid = '\0'; | |
5704 | SvCUR_set(bigstr, mid - big); | |
5705 | } | |
5706 | /*SUPPRESS 560*/ | |
155aba94 | 5707 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5708 | midend -= littlelen; |
5709 | mid = midend; | |
5710 | sv_chop(bigstr,midend-i); | |
5711 | big += i; | |
5712 | while (i--) | |
5713 | *--midend = *--big; | |
5714 | if (littlelen) | |
5715 | Move(little, mid, littlelen,char); | |
5716 | } | |
5717 | else if (littlelen) { | |
5718 | midend -= littlelen; | |
5719 | sv_chop(bigstr,midend); | |
5720 | Move(little,midend,littlelen,char); | |
5721 | } | |
5722 | else { | |
5723 | sv_chop(bigstr,midend); | |
5724 | } | |
5725 | SvSETMAGIC(bigstr); | |
5726 | } | |
5727 | ||
c461cf8f JH |
5728 | /* |
5729 | =for apidoc sv_replace | |
5730 | ||
5731 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5732 | The target SV physically takes over ownership of the body of the source SV |
5733 | and inherits its flags; however, the target keeps any magic it owns, | |
5734 | and any magic in the source is discarded. | |
ff276b08 | 5735 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5736 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5737 | |
5738 | =cut | |
5739 | */ | |
79072805 LW |
5740 | |
5741 | void | |
864dbfa3 | 5742 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 | 5743 | { |
a3b680e6 | 5744 | const U32 refcnt = SvREFCNT(sv); |
765f542d | 5745 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
0453d815 | 5746 | if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL)) |
9014280d | 5747 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Reference miscount in sv_replace()"); |
93a17b20 | 5748 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5749 | if (SvMAGICAL(nsv)) |
5750 | mg_free(nsv); | |
5751 | else | |
5752 | sv_upgrade(nsv, SVt_PVMG); | |
b162af07 | 5753 | SvMAGIC_set(nsv, SvMAGIC(sv)); |
a0d0e21e | 5754 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 | 5755 | SvMAGICAL_off(sv); |
b162af07 | 5756 | SvMAGIC_set(sv, NULL); |
93a17b20 | 5757 | } |
79072805 LW |
5758 | SvREFCNT(sv) = 0; |
5759 | sv_clear(sv); | |
477f5d66 | 5760 | assert(!SvREFCNT(sv)); |
fd0854ff DM |
5761 | #ifdef DEBUG_LEAKING_SCALARS |
5762 | sv->sv_flags = nsv->sv_flags; | |
5763 | sv->sv_any = nsv->sv_any; | |
5764 | sv->sv_refcnt = nsv->sv_refcnt; | |
5765 | #else | |
79072805 | 5766 | StructCopy(nsv,sv,SV); |
fd0854ff | 5767 | #endif |
7b2c381c NC |
5768 | /* Currently could join these into one piece of pointer arithmetic, but |
5769 | it would be unclear. */ | |
5770 | if(SvTYPE(sv) == SVt_IV) | |
5771 | SvANY(sv) | |
339049b0 | 5772 | = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
7b2c381c | 5773 | else if (SvTYPE(sv) == SVt_RV) { |
339049b0 | 5774 | SvANY(sv) = &sv->sv_u.svu_rv; |
7b2c381c NC |
5775 | } |
5776 | ||
fd0854ff | 5777 | |
d3d0e6f1 NC |
5778 | #ifdef PERL_COPY_ON_WRITE |
5779 | if (SvIsCOW_normal(nsv)) { | |
5780 | /* We need to follow the pointers around the loop to make the | |
5781 | previous SV point to sv, rather than nsv. */ | |
5782 | SV *next; | |
5783 | SV *current = nsv; | |
5784 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5785 | assert(next); | |
5786 | current = next; | |
5787 | assert(SvPVX(current) == SvPVX(nsv)); | |
5788 | } | |
5789 | /* Make the SV before us point to the SV after us. */ | |
5790 | if (DEBUG_C_TEST) { | |
5791 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5792 | sv_dump(current); | |
a29f6d03 NC |
5793 | PerlIO_printf(Perl_debug_log, |
5794 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5795 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5796 | } | |
a29f6d03 | 5797 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5798 | } |
5799 | #endif | |
79072805 | 5800 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5801 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 5802 | SvREFCNT(nsv) = 0; |
463ee0b2 | 5803 | del_SV(nsv); |
79072805 LW |
5804 | } |
5805 | ||
c461cf8f JH |
5806 | /* |
5807 | =for apidoc sv_clear | |
5808 | ||
645c22ef DM |
5809 | Clear an SV: call any destructors, free up any memory used by the body, |
5810 | and free the body itself. The SV's head is I<not> freed, although | |
5811 | its type is set to all 1's so that it won't inadvertently be assumed | |
5812 | to be live during global destruction etc. | |
5813 | This function should only be called when REFCNT is zero. Most of the time | |
5814 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5815 | instead. | |
c461cf8f JH |
5816 | |
5817 | =cut | |
5818 | */ | |
5819 | ||
79072805 | 5820 | void |
864dbfa3 | 5821 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5822 | { |
27da23d5 | 5823 | dVAR; |
ec12f114 | 5824 | HV* stash; |
79072805 LW |
5825 | assert(sv); |
5826 | assert(SvREFCNT(sv) == 0); | |
5827 | ||
ed6116ce | 5828 | if (SvOBJECT(sv)) { |
3280af22 | 5829 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5830 | dSP; |
32251b26 | 5831 | CV* destructor; |
a0d0e21e | 5832 | |
5cc433a6 | 5833 | |
8ebc5c01 | 5834 | |
d460ef45 | 5835 | do { |
4e8e7886 | 5836 | stash = SvSTASH(sv); |
32251b26 | 5837 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5838 | if (destructor) { |
5cc433a6 AB |
5839 | SV* tmpref = newRV(sv); |
5840 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ | |
4e8e7886 | 5841 | ENTER; |
e788e7d3 | 5842 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5843 | EXTEND(SP, 2); |
5844 | PUSHMARK(SP); | |
5cc433a6 | 5845 | PUSHs(tmpref); |
4e8e7886 | 5846 | PUTBACK; |
44389ee9 | 5847 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
7a5fa8a2 NIS |
5848 | |
5849 | ||
d3acc0f7 | 5850 | POPSTACK; |
3095d977 | 5851 | SPAGAIN; |
4e8e7886 | 5852 | LEAVE; |
5cc433a6 AB |
5853 | if(SvREFCNT(tmpref) < 2) { |
5854 | /* tmpref is not kept alive! */ | |
5855 | SvREFCNT(sv)--; | |
b162af07 | 5856 | SvRV_set(tmpref, NULL); |
5cc433a6 AB |
5857 | SvROK_off(tmpref); |
5858 | } | |
5859 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5860 | } |
5861 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5862 | |
6f44e0a4 JP |
5863 | |
5864 | if (SvREFCNT(sv)) { | |
5865 | if (PL_in_clean_objs) | |
cea2e8a9 | 5866 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
bfcb3514 | 5867 | HvNAME_get(stash)); |
6f44e0a4 JP |
5868 | /* DESTROY gave object new lease on life */ |
5869 | return; | |
5870 | } | |
a0d0e21e | 5871 | } |
4e8e7886 | 5872 | |
a0d0e21e | 5873 | if (SvOBJECT(sv)) { |
4e8e7886 | 5874 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e LW |
5875 | SvOBJECT_off(sv); /* Curse the object. */ |
5876 | if (SvTYPE(sv) != SVt_PVIO) | |
3280af22 | 5877 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5878 | } |
463ee0b2 | 5879 | } |
524189f1 JH |
5880 | if (SvTYPE(sv) >= SVt_PVMG) { |
5881 | if (SvMAGIC(sv)) | |
5882 | mg_free(sv); | |
bce8f412 | 5883 | if (SvTYPE(sv) == SVt_PVMG && SvFLAGS(sv) & SVpad_TYPED) |
524189f1 JH |
5884 | SvREFCNT_dec(SvSTASH(sv)); |
5885 | } | |
ec12f114 | 5886 | stash = NULL; |
79072805 | 5887 | switch (SvTYPE(sv)) { |
8990e307 | 5888 | case SVt_PVIO: |
df0bd2f4 GS |
5889 | if (IoIFP(sv) && |
5890 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5891 | IoIFP(sv) != PerlIO_stdout() && |
5892 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5893 | { |
f2b5be74 | 5894 | io_close((IO*)sv, FALSE); |
93578b34 | 5895 | } |
1d7c1841 | 5896 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5897 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5898 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5899 | Safefree(IoTOP_NAME(sv)); |
5900 | Safefree(IoFMT_NAME(sv)); | |
5901 | Safefree(IoBOTTOM_NAME(sv)); | |
a0d0e21e | 5902 | /* FALL THROUGH */ |
79072805 | 5903 | case SVt_PVBM: |
a0d0e21e | 5904 | goto freescalar; |
79072805 | 5905 | case SVt_PVCV: |
748a9306 | 5906 | case SVt_PVFM: |
85e6fe83 | 5907 | cv_undef((CV*)sv); |
a0d0e21e | 5908 | goto freescalar; |
79072805 | 5909 | case SVt_PVHV: |
85e6fe83 | 5910 | hv_undef((HV*)sv); |
a0d0e21e | 5911 | break; |
79072805 | 5912 | case SVt_PVAV: |
85e6fe83 | 5913 | av_undef((AV*)sv); |
a0d0e21e | 5914 | break; |
02270b4e | 5915 | case SVt_PVLV: |
dd28f7bb DM |
5916 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5917 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5918 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5919 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5920 | } | |
5921 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5922 | SvREFCNT_dec(LvTARG(sv)); | |
02270b4e | 5923 | goto freescalar; |
a0d0e21e | 5924 | case SVt_PVGV: |
1edc1566 | 5925 | gp_free((GV*)sv); |
a0d0e21e | 5926 | Safefree(GvNAME(sv)); |
ec12f114 JPC |
5927 | /* cannot decrease stash refcount yet, as we might recursively delete |
5928 | ourselves when the refcnt drops to zero. Delay SvREFCNT_dec | |
5929 | of stash until current sv is completely gone. | |
5930 | -- JohnPC, 27 Mar 1998 */ | |
5931 | stash = GvSTASH(sv); | |
a0d0e21e | 5932 | /* FALL THROUGH */ |
79072805 | 5933 | case SVt_PVMG: |
79072805 LW |
5934 | case SVt_PVNV: |
5935 | case SVt_PVIV: | |
a0d0e21e | 5936 | freescalar: |
5228ca4e NC |
5937 | /* Don't bother with SvOOK_off(sv); as we're only going to free it. */ |
5938 | if (SvOOK(sv)) { | |
5939 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); | |
5940 | /* Don't even bother with turning off the OOK flag. */ | |
5941 | } | |
79072805 LW |
5942 | /* FALL THROUGH */ |
5943 | case SVt_PV: | |
a0d0e21e | 5944 | case SVt_RV: |
810b8aa5 GS |
5945 | if (SvROK(sv)) { |
5946 | if (SvWEAKREF(sv)) | |
5947 | sv_del_backref(sv); | |
5948 | else | |
5949 | SvREFCNT_dec(SvRV(sv)); | |
5950 | } | |
765f542d NC |
5951 | #ifdef PERL_COPY_ON_WRITE |
5952 | else if (SvPVX(sv)) { | |
5953 | if (SvIsCOW(sv)) { | |
5954 | /* I believe I need to grab the global SV mutex here and | |
5955 | then recheck the COW status. */ | |
46187eeb NC |
5956 | if (DEBUG_C_TEST) { |
5957 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5958 | sv_dump(sv); |
46187eeb | 5959 | } |
e419cbc5 | 5960 | sv_release_COW(sv, SvPVX(sv), SvCUR(sv), SvLEN(sv), |
765f542d NC |
5961 | SvUVX(sv), SV_COW_NEXT_SV(sv)); |
5962 | /* And drop it here. */ | |
5963 | SvFAKE_off(sv); | |
5964 | } else if (SvLEN(sv)) { | |
5965 | Safefree(SvPVX(sv)); | |
5966 | } | |
5967 | } | |
5968 | #else | |
1edc1566 | 5969 | else if (SvPVX(sv) && SvLEN(sv)) |
463ee0b2 | 5970 | Safefree(SvPVX(sv)); |
1c846c1f | 5971 | else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
25716404 GS |
5972 | unsharepvn(SvPVX(sv), |
5973 | SvUTF8(sv) ? -(I32)SvCUR(sv) : SvCUR(sv), | |
5974 | SvUVX(sv)); | |
1c846c1f NIS |
5975 | SvFAKE_off(sv); |
5976 | } | |
765f542d | 5977 | #endif |
79072805 | 5978 | break; |
a0d0e21e | 5979 | /* |
79072805 | 5980 | case SVt_NV: |
79072805 | 5981 | case SVt_IV: |
79072805 LW |
5982 | case SVt_NULL: |
5983 | break; | |
a0d0e21e | 5984 | */ |
79072805 LW |
5985 | } |
5986 | ||
5987 | switch (SvTYPE(sv)) { | |
5988 | case SVt_NULL: | |
5989 | break; | |
79072805 | 5990 | case SVt_IV: |
79072805 LW |
5991 | break; |
5992 | case SVt_NV: | |
5993 | del_XNV(SvANY(sv)); | |
5994 | break; | |
ed6116ce | 5995 | case SVt_RV: |
ed6116ce | 5996 | break; |
79072805 LW |
5997 | case SVt_PV: |
5998 | del_XPV(SvANY(sv)); | |
5999 | break; | |
6000 | case SVt_PVIV: | |
6001 | del_XPVIV(SvANY(sv)); | |
6002 | break; | |
6003 | case SVt_PVNV: | |
6004 | del_XPVNV(SvANY(sv)); | |
6005 | break; | |
6006 | case SVt_PVMG: | |
6007 | del_XPVMG(SvANY(sv)); | |
6008 | break; | |
6009 | case SVt_PVLV: | |
6010 | del_XPVLV(SvANY(sv)); | |
6011 | break; | |
6012 | case SVt_PVAV: | |
6013 | del_XPVAV(SvANY(sv)); | |
6014 | break; | |
6015 | case SVt_PVHV: | |
6016 | del_XPVHV(SvANY(sv)); | |
6017 | break; | |
6018 | case SVt_PVCV: | |
6019 | del_XPVCV(SvANY(sv)); | |
6020 | break; | |
6021 | case SVt_PVGV: | |
6022 | del_XPVGV(SvANY(sv)); | |
ec12f114 JPC |
6023 | /* code duplication for increased performance. */ |
6024 | SvFLAGS(sv) &= SVf_BREAK; | |
6025 | SvFLAGS(sv) |= SVTYPEMASK; | |
6026 | /* decrease refcount of the stash that owns this GV, if any */ | |
6027 | if (stash) | |
6028 | SvREFCNT_dec(stash); | |
6029 | return; /* not break, SvFLAGS reset already happened */ | |
79072805 LW |
6030 | case SVt_PVBM: |
6031 | del_XPVBM(SvANY(sv)); | |
6032 | break; | |
6033 | case SVt_PVFM: | |
6034 | del_XPVFM(SvANY(sv)); | |
6035 | break; | |
8990e307 LW |
6036 | case SVt_PVIO: |
6037 | del_XPVIO(SvANY(sv)); | |
6038 | break; | |
79072805 | 6039 | } |
a0d0e21e | 6040 | SvFLAGS(sv) &= SVf_BREAK; |
8990e307 | 6041 | SvFLAGS(sv) |= SVTYPEMASK; |
79072805 LW |
6042 | } |
6043 | ||
645c22ef DM |
6044 | /* |
6045 | =for apidoc sv_newref | |
6046 | ||
6047 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
6048 | instead. | |
6049 | ||
6050 | =cut | |
6051 | */ | |
6052 | ||
79072805 | 6053 | SV * |
864dbfa3 | 6054 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 6055 | { |
463ee0b2 | 6056 | if (sv) |
4db098f4 | 6057 | (SvREFCNT(sv))++; |
79072805 LW |
6058 | return sv; |
6059 | } | |
6060 | ||
c461cf8f JH |
6061 | /* |
6062 | =for apidoc sv_free | |
6063 | ||
645c22ef DM |
6064 | Decrement an SV's reference count, and if it drops to zero, call |
6065 | C<sv_clear> to invoke destructors and free up any memory used by | |
6066 | the body; finally, deallocate the SV's head itself. | |
6067 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
6068 | |
6069 | =cut | |
6070 | */ | |
6071 | ||
79072805 | 6072 | void |
864dbfa3 | 6073 | Perl_sv_free(pTHX_ SV *sv) |
79072805 | 6074 | { |
27da23d5 | 6075 | dVAR; |
79072805 LW |
6076 | if (!sv) |
6077 | return; | |
a0d0e21e LW |
6078 | if (SvREFCNT(sv) == 0) { |
6079 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
6080 | /* this SV's refcnt has been artificially decremented to |
6081 | * trigger cleanup */ | |
a0d0e21e | 6082 | return; |
3280af22 | 6083 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 6084 | return; |
d689ffdd JP |
6085 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6086 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6087 | SvREFCNT(sv) = (~(U32)0)/2; | |
6088 | return; | |
6089 | } | |
0453d815 | 6090 | if (ckWARN_d(WARN_INTERNAL)) |
d5dede04 | 6091 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
6092 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
6093 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 LW |
6094 | return; |
6095 | } | |
4db098f4 | 6096 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 6097 | return; |
8c4d3c90 NC |
6098 | Perl_sv_free2(aTHX_ sv); |
6099 | } | |
6100 | ||
6101 | void | |
6102 | Perl_sv_free2(pTHX_ SV *sv) | |
6103 | { | |
27da23d5 | 6104 | dVAR; |
463ee0b2 LW |
6105 | #ifdef DEBUGGING |
6106 | if (SvTEMP(sv)) { | |
0453d815 | 6107 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 6108 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
6109 | "Attempt to free temp prematurely: SV 0x%"UVxf |
6110 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 6111 | return; |
79072805 | 6112 | } |
463ee0b2 | 6113 | #endif |
d689ffdd JP |
6114 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6115 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6116 | SvREFCNT(sv) = (~(U32)0)/2; | |
6117 | return; | |
6118 | } | |
79072805 | 6119 | sv_clear(sv); |
477f5d66 CS |
6120 | if (! SvREFCNT(sv)) |
6121 | del_SV(sv); | |
79072805 LW |
6122 | } |
6123 | ||
954c1994 GS |
6124 | /* |
6125 | =for apidoc sv_len | |
6126 | ||
645c22ef DM |
6127 | Returns the length of the string in the SV. Handles magic and type |
6128 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
6129 | |
6130 | =cut | |
6131 | */ | |
6132 | ||
79072805 | 6133 | STRLEN |
864dbfa3 | 6134 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 6135 | { |
463ee0b2 | 6136 | STRLEN len; |
79072805 LW |
6137 | |
6138 | if (!sv) | |
6139 | return 0; | |
6140 | ||
8990e307 | 6141 | if (SvGMAGICAL(sv)) |
565764a8 | 6142 | len = mg_length(sv); |
8990e307 | 6143 | else |
497b47a8 | 6144 | (void)SvPV(sv, len); |
463ee0b2 | 6145 | return len; |
79072805 LW |
6146 | } |
6147 | ||
c461cf8f JH |
6148 | /* |
6149 | =for apidoc sv_len_utf8 | |
6150 | ||
6151 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 6152 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
6153 | |
6154 | =cut | |
6155 | */ | |
6156 | ||
7e8c5dac HS |
6157 | /* |
6158 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
6159 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
6160 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
7a5fa8a2 | 6161 | * |
7e8c5dac HS |
6162 | */ |
6163 | ||
a0ed51b3 | 6164 | STRLEN |
864dbfa3 | 6165 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 6166 | { |
a0ed51b3 LW |
6167 | if (!sv) |
6168 | return 0; | |
6169 | ||
a0ed51b3 | 6170 | if (SvGMAGICAL(sv)) |
b76347f2 | 6171 | return mg_length(sv); |
a0ed51b3 | 6172 | else |
b76347f2 | 6173 | { |
7e8c5dac | 6174 | STRLEN len, ulen; |
a3b680e6 | 6175 | const U8 *s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
6176 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
6177 | ||
e23c8137 | 6178 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) { |
7e8c5dac | 6179 | ulen = mg->mg_len; |
e23c8137 JH |
6180 | #ifdef PERL_UTF8_CACHE_ASSERT |
6181 | assert(ulen == Perl_utf8_length(aTHX_ s, s + len)); | |
6182 | #endif | |
6183 | } | |
7e8c5dac HS |
6184 | else { |
6185 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
6186 | if (!mg && !SvREADONLY(sv)) { | |
6187 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6188 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6189 | assert(mg); | |
6190 | } | |
6191 | if (mg) | |
6192 | mg->mg_len = ulen; | |
6193 | } | |
6194 | return ulen; | |
6195 | } | |
6196 | } | |
6197 | ||
6198 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
6199 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6200 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
6201 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
6202 | * and byte offset) cache positions. | |
6203 | * | |
6204 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
6205 | * Note that the mg_len is not the length of the mg_ptr field. | |
6206 | * | |
6207 | */ | |
6208 | STATIC bool | |
a3b680e6 | 6209 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 offsetp, U8 *s, U8 *start) |
7e8c5dac | 6210 | { |
7a5fa8a2 | 6211 | bool found = FALSE; |
7e8c5dac HS |
6212 | |
6213 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
8f78557a | 6214 | if (!*mgp) |
27da23d5 | 6215 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, (MGVTBL*)&PL_vtbl_utf8, 0, 0); |
7e8c5dac | 6216 | assert(*mgp); |
b76347f2 | 6217 | |
7e8c5dac HS |
6218 | if ((*mgp)->mg_ptr) |
6219 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
6220 | else { | |
6221 | Newz(0, *cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
6222 | (*mgp)->mg_ptr = (char *) *cachep; | |
6223 | } | |
6224 | assert(*cachep); | |
6225 | ||
a3b680e6 | 6226 | (*cachep)[i] = offsetp; |
7e8c5dac HS |
6227 | (*cachep)[i+1] = s - start; |
6228 | found = TRUE; | |
a0ed51b3 | 6229 | } |
7e8c5dac HS |
6230 | |
6231 | return found; | |
a0ed51b3 LW |
6232 | } |
6233 | ||
645c22ef | 6234 | /* |
7e8c5dac HS |
6235 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
6236 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6237 | * between UTF-8 and byte offsets. See also the comments of | |
6238 | * S_utf8_mg_pos_init(). | |
6239 | * | |
6240 | */ | |
6241 | STATIC bool | |
6e551876 | 6242 | 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 |
6243 | { |
6244 | bool found = FALSE; | |
6245 | ||
6246 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6247 | if (!*mgp) | |
6248 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
6249 | if (*mgp && (*mgp)->mg_ptr) { | |
6250 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
e23c8137 | 6251 | ASSERT_UTF8_CACHE(*cachep); |
667208dd | 6252 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
7a5fa8a2 | 6253 | found = TRUE; |
7e8c5dac HS |
6254 | else { /* We will skip to the right spot. */ |
6255 | STRLEN forw = 0; | |
6256 | STRLEN backw = 0; | |
a3b680e6 | 6257 | const U8* p = NULL; |
7e8c5dac HS |
6258 | |
6259 | /* The assumption is that going backward is half | |
6260 | * the speed of going forward (that's where the | |
6261 | * 2 * backw in the below comes from). (The real | |
6262 | * figure of course depends on the UTF-8 data.) */ | |
6263 | ||
667208dd | 6264 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 6265 | forw = uoff; |
667208dd | 6266 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
6267 | |
6268 | if (forw < 2 * backw) | |
6269 | p = start; | |
6270 | else | |
6271 | p = start + (*cachep)[i+1]; | |
6272 | } | |
6273 | /* Try this only for the substr offset (i == 0), | |
6274 | * not for the substr length (i == 2). */ | |
6275 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
a3b680e6 | 6276 | const STRLEN ulen = sv_len_utf8(sv); |
7e8c5dac | 6277 | |
667208dd JH |
6278 | if ((STRLEN)uoff < ulen) { |
6279 | forw = (STRLEN)uoff - (*cachep)[i]; | |
6280 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
6281 | |
6282 | if (forw < 2 * backw) | |
6283 | p = start + (*cachep)[i+1]; | |
6284 | else | |
6285 | p = send; | |
6286 | } | |
6287 | ||
6288 | /* If the string is not long enough for uoff, | |
6289 | * we could extend it, but not at this low a level. */ | |
6290 | } | |
6291 | ||
6292 | if (p) { | |
6293 | if (forw < 2 * backw) { | |
6294 | while (forw--) | |
6295 | p += UTF8SKIP(p); | |
6296 | } | |
6297 | else { | |
6298 | while (backw--) { | |
6299 | p--; | |
6300 | while (UTF8_IS_CONTINUATION(*p)) | |
6301 | p--; | |
6302 | } | |
6303 | } | |
6304 | ||
6305 | /* Update the cache. */ | |
667208dd | 6306 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac | 6307 | (*cachep)[i+1] = p - start; |
8f78557a AE |
6308 | |
6309 | /* Drop the stale "length" cache */ | |
6310 | if (i == 0) { | |
6311 | (*cachep)[2] = 0; | |
6312 | (*cachep)[3] = 0; | |
6313 | } | |
7a5fa8a2 | 6314 | |
7e8c5dac HS |
6315 | found = TRUE; |
6316 | } | |
6317 | } | |
6318 | if (found) { /* Setup the return values. */ | |
6319 | *offsetp = (*cachep)[i+1]; | |
6320 | *sp = start + *offsetp; | |
6321 | if (*sp >= send) { | |
6322 | *sp = send; | |
6323 | *offsetp = send - start; | |
6324 | } | |
6325 | else if (*sp < start) { | |
6326 | *sp = start; | |
6327 | *offsetp = 0; | |
6328 | } | |
6329 | } | |
6330 | } | |
e23c8137 JH |
6331 | #ifdef PERL_UTF8_CACHE_ASSERT |
6332 | if (found) { | |
6333 | U8 *s = start; | |
6334 | I32 n = uoff; | |
6335 | ||
6336 | while (n-- && s < send) | |
6337 | s += UTF8SKIP(s); | |
6338 | ||
6339 | if (i == 0) { | |
6340 | assert(*offsetp == s - start); | |
6341 | assert((*cachep)[0] == (STRLEN)uoff); | |
6342 | assert((*cachep)[1] == *offsetp); | |
6343 | } | |
6344 | ASSERT_UTF8_CACHE(*cachep); | |
6345 | } | |
6346 | #endif | |
7e8c5dac | 6347 | } |
e23c8137 | 6348 | |
7e8c5dac HS |
6349 | return found; |
6350 | } | |
7a5fa8a2 | 6351 | |
7e8c5dac | 6352 | /* |
645c22ef DM |
6353 | =for apidoc sv_pos_u2b |
6354 | ||
1e54db1a | 6355 | Converts the value pointed to by offsetp from a count of UTF-8 chars from |
645c22ef DM |
6356 | the start of the string, to a count of the equivalent number of bytes; if |
6357 | lenp is non-zero, it does the same to lenp, but this time starting from | |
6358 | the offset, rather than from the start of the string. Handles magic and | |
6359 | type coercion. | |
6360 | ||
6361 | =cut | |
6362 | */ | |
6363 | ||
7e8c5dac HS |
6364 | /* |
6365 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
6366 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6367 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6368 | * | |
6369 | */ | |
6370 | ||
a0ed51b3 | 6371 | void |
864dbfa3 | 6372 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 6373 | { |
dfe13c55 GS |
6374 | U8 *start; |
6375 | U8 *s; | |
a0ed51b3 | 6376 | STRLEN len; |
7e8c5dac HS |
6377 | STRLEN *cache = 0; |
6378 | STRLEN boffset = 0; | |
a0ed51b3 LW |
6379 | |
6380 | if (!sv) | |
6381 | return; | |
6382 | ||
dfe13c55 | 6383 | start = s = (U8*)SvPV(sv, len); |
7e8c5dac HS |
6384 | if (len) { |
6385 | I32 uoffset = *offsetp; | |
6386 | U8 *send = s + len; | |
6387 | MAGIC *mg = 0; | |
6388 | bool found = FALSE; | |
6389 | ||
bdf77a2a | 6390 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
6391 | found = TRUE; |
6392 | if (!found && uoffset > 0) { | |
6393 | while (s < send && uoffset--) | |
6394 | s += UTF8SKIP(s); | |
6395 | if (s >= send) | |
6396 | s = send; | |
a3b680e6 | 6397 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, *offsetp, s, start)) |
7e8c5dac HS |
6398 | boffset = cache[1]; |
6399 | *offsetp = s - start; | |
6400 | } | |
6401 | if (lenp) { | |
6402 | found = FALSE; | |
6403 | start = s; | |
ec062429 | 6404 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp, &s, start, send)) { |
7e8c5dac HS |
6405 | *lenp -= boffset; |
6406 | found = TRUE; | |
6407 | } | |
6408 | if (!found && *lenp > 0) { | |
6409 | I32 ulen = *lenp; | |
6410 | if (ulen > 0) | |
6411 | while (s < send && ulen--) | |
6412 | s += UTF8SKIP(s); | |
6413 | if (s >= send) | |
6414 | s = send; | |
a3b680e6 | 6415 | utf8_mg_pos_init(sv, &mg, &cache, 2, *lenp, s, start); |
7e8c5dac HS |
6416 | } |
6417 | *lenp = s - start; | |
6418 | } | |
e23c8137 | 6419 | ASSERT_UTF8_CACHE(cache); |
7e8c5dac HS |
6420 | } |
6421 | else { | |
6422 | *offsetp = 0; | |
6423 | if (lenp) | |
6424 | *lenp = 0; | |
a0ed51b3 | 6425 | } |
e23c8137 | 6426 | |
a0ed51b3 LW |
6427 | return; |
6428 | } | |
6429 | ||
645c22ef DM |
6430 | /* |
6431 | =for apidoc sv_pos_b2u | |
6432 | ||
6433 | Converts the value pointed to by offsetp from a count of bytes from the | |
1e54db1a | 6434 | start of the string, to a count of the equivalent number of UTF-8 chars. |
645c22ef DM |
6435 | Handles magic and type coercion. |
6436 | ||
6437 | =cut | |
6438 | */ | |
6439 | ||
7e8c5dac HS |
6440 | /* |
6441 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
6442 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6443 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6444 | * | |
6445 | */ | |
6446 | ||
a0ed51b3 | 6447 | void |
7e8c5dac | 6448 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 6449 | { |
7e8c5dac | 6450 | U8* s; |
a0ed51b3 LW |
6451 | STRLEN len; |
6452 | ||
6453 | if (!sv) | |
6454 | return; | |
6455 | ||
dfe13c55 | 6456 | s = (U8*)SvPV(sv, len); |
eb160463 | 6457 | if ((I32)len < *offsetp) |
a0dbb045 | 6458 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac HS |
6459 | else { |
6460 | U8* send = s + *offsetp; | |
6461 | MAGIC* mg = NULL; | |
6462 | STRLEN *cache = NULL; | |
6463 | ||
6464 | len = 0; | |
6465 | ||
6466 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6467 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6468 | if (mg && mg->mg_ptr) { | |
6469 | cache = (STRLEN *) mg->mg_ptr; | |
c5661c80 | 6470 | if (cache[1] == (STRLEN)*offsetp) { |
7e8c5dac HS |
6471 | /* An exact match. */ |
6472 | *offsetp = cache[0]; | |
6473 | ||
6474 | return; | |
6475 | } | |
c5661c80 | 6476 | else if (cache[1] < (STRLEN)*offsetp) { |
7e8c5dac HS |
6477 | /* We already know part of the way. */ |
6478 | len = cache[0]; | |
6479 | s += cache[1]; | |
7a5fa8a2 | 6480 | /* Let the below loop do the rest. */ |
7e8c5dac HS |
6481 | } |
6482 | else { /* cache[1] > *offsetp */ | |
6483 | /* We already know all of the way, now we may | |
6484 | * be able to walk back. The same assumption | |
6485 | * is made as in S_utf8_mg_pos(), namely that | |
6486 | * walking backward is twice slower than | |
6487 | * walking forward. */ | |
6488 | STRLEN forw = *offsetp; | |
6489 | STRLEN backw = cache[1] - *offsetp; | |
6490 | ||
6491 | if (!(forw < 2 * backw)) { | |
6492 | U8 *p = s + cache[1]; | |
6493 | STRLEN ubackw = 0; | |
7a5fa8a2 | 6494 | |
a5b510f2 AE |
6495 | cache[1] -= backw; |
6496 | ||
7e8c5dac HS |
6497 | while (backw--) { |
6498 | p--; | |
0aeb64d0 | 6499 | while (UTF8_IS_CONTINUATION(*p)) { |
7e8c5dac | 6500 | p--; |
0aeb64d0 JH |
6501 | backw--; |
6502 | } | |
7e8c5dac HS |
6503 | ubackw++; |
6504 | } | |
6505 | ||
6506 | cache[0] -= ubackw; | |
0aeb64d0 | 6507 | *offsetp = cache[0]; |
a67d7df9 TS |
6508 | |
6509 | /* Drop the stale "length" cache */ | |
6510 | cache[2] = 0; | |
6511 | cache[3] = 0; | |
6512 | ||
0aeb64d0 | 6513 | return; |
7e8c5dac HS |
6514 | } |
6515 | } | |
6516 | } | |
e23c8137 | 6517 | ASSERT_UTF8_CACHE(cache); |
a0dbb045 | 6518 | } |
7e8c5dac HS |
6519 | |
6520 | while (s < send) { | |
6521 | STRLEN n = 1; | |
6522 | ||
6523 | /* Call utf8n_to_uvchr() to validate the sequence | |
6524 | * (unless a simple non-UTF character) */ | |
6525 | if (!UTF8_IS_INVARIANT(*s)) | |
6526 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
6527 | if (n > 0) { | |
6528 | s += n; | |
6529 | len++; | |
6530 | } | |
6531 | else | |
6532 | break; | |
6533 | } | |
6534 | ||
6535 | if (!SvREADONLY(sv)) { | |
6536 | if (!mg) { | |
6537 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6538 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6539 | } | |
6540 | assert(mg); | |
6541 | ||
6542 | if (!mg->mg_ptr) { | |
979acdb5 | 6543 | Newz(0, cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
6544 | mg->mg_ptr = (char *) cache; |
6545 | } | |
6546 | assert(cache); | |
6547 | ||
6548 | cache[0] = len; | |
6549 | cache[1] = *offsetp; | |
a67d7df9 TS |
6550 | /* Drop the stale "length" cache */ |
6551 | cache[2] = 0; | |
6552 | cache[3] = 0; | |
7e8c5dac HS |
6553 | } |
6554 | ||
6555 | *offsetp = len; | |
a0ed51b3 | 6556 | } |
a0ed51b3 LW |
6557 | return; |
6558 | } | |
6559 | ||
954c1994 GS |
6560 | /* |
6561 | =for apidoc sv_eq | |
6562 | ||
6563 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
6564 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6565 | coerce its args to strings if necessary. | |
954c1994 GS |
6566 | |
6567 | =cut | |
6568 | */ | |
6569 | ||
79072805 | 6570 | I32 |
e01b9e88 | 6571 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6572 | { |
e1ec3a88 | 6573 | const char *pv1; |
463ee0b2 | 6574 | STRLEN cur1; |
e1ec3a88 | 6575 | const char *pv2; |
463ee0b2 | 6576 | STRLEN cur2; |
e01b9e88 | 6577 | I32 eq = 0; |
553e1bcc AT |
6578 | char *tpv = Nullch; |
6579 | SV* svrecode = Nullsv; | |
79072805 | 6580 | |
e01b9e88 | 6581 | if (!sv1) { |
79072805 LW |
6582 | pv1 = ""; |
6583 | cur1 = 0; | |
6584 | } | |
463ee0b2 | 6585 | else |
e01b9e88 | 6586 | pv1 = SvPV(sv1, cur1); |
79072805 | 6587 | |
e01b9e88 SC |
6588 | if (!sv2){ |
6589 | pv2 = ""; | |
6590 | cur2 = 0; | |
92d29cee | 6591 | } |
e01b9e88 SC |
6592 | else |
6593 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6594 | |
cf48d248 | 6595 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6596 | /* Differing utf8ness. |
6597 | * Do not UTF8size the comparands as a side-effect. */ | |
6598 | if (PL_encoding) { | |
6599 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6600 | svrecode = newSVpvn(pv2, cur2); |
6601 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6602 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6603 | } |
6604 | else { | |
553e1bcc AT |
6605 | svrecode = newSVpvn(pv1, cur1); |
6606 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6607 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6608 | } |
6609 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
6610 | if (cur1 != cur2) { |
6611 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6612 | return FALSE; |
0a1bd7ac | 6613 | } |
799ef3cb JH |
6614 | } |
6615 | else { | |
6616 | bool is_utf8 = TRUE; | |
6617 | ||
6618 | if (SvUTF8(sv1)) { | |
6619 | /* sv1 is the UTF-8 one, | |
6620 | * if is equal it must be downgrade-able */ | |
e1ec3a88 | 6621 | char *pv = (char*)bytes_from_utf8((const U8*)pv1, |
799ef3cb JH |
6622 | &cur1, &is_utf8); |
6623 | if (pv != pv1) | |
553e1bcc | 6624 | pv1 = tpv = pv; |
799ef3cb JH |
6625 | } |
6626 | else { | |
6627 | /* sv2 is the UTF-8 one, | |
6628 | * if is equal it must be downgrade-able */ | |
e1ec3a88 | 6629 | char *pv = (char *)bytes_from_utf8((const U8*)pv2, |
799ef3cb JH |
6630 | &cur2, &is_utf8); |
6631 | if (pv != pv2) | |
553e1bcc | 6632 | pv2 = tpv = pv; |
799ef3cb JH |
6633 | } |
6634 | if (is_utf8) { | |
6635 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 6636 | assert (tpv == 0); |
799ef3cb JH |
6637 | return FALSE; |
6638 | } | |
6639 | } | |
cf48d248 JH |
6640 | } |
6641 | ||
6642 | if (cur1 == cur2) | |
765f542d | 6643 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6644 | |
553e1bcc AT |
6645 | if (svrecode) |
6646 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6647 | |
553e1bcc AT |
6648 | if (tpv) |
6649 | Safefree(tpv); | |
cf48d248 | 6650 | |
e01b9e88 | 6651 | return eq; |
79072805 LW |
6652 | } |
6653 | ||
954c1994 GS |
6654 | /* |
6655 | =for apidoc sv_cmp | |
6656 | ||
6657 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6658 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6659 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6660 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6661 | |
6662 | =cut | |
6663 | */ | |
6664 | ||
79072805 | 6665 | I32 |
e01b9e88 | 6666 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6667 | { |
560a288e | 6668 | STRLEN cur1, cur2; |
e1ec3a88 AL |
6669 | const char *pv1, *pv2; |
6670 | char *tpv = Nullch; | |
cf48d248 | 6671 | I32 cmp; |
553e1bcc | 6672 | SV *svrecode = Nullsv; |
560a288e | 6673 | |
e01b9e88 SC |
6674 | if (!sv1) { |
6675 | pv1 = ""; | |
560a288e GS |
6676 | cur1 = 0; |
6677 | } | |
e01b9e88 SC |
6678 | else |
6679 | pv1 = SvPV(sv1, cur1); | |
560a288e | 6680 | |
553e1bcc | 6681 | if (!sv2) { |
e01b9e88 | 6682 | pv2 = ""; |
560a288e GS |
6683 | cur2 = 0; |
6684 | } | |
e01b9e88 SC |
6685 | else |
6686 | pv2 = SvPV(sv2, cur2); | |
79072805 | 6687 | |
cf48d248 | 6688 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6689 | /* Differing utf8ness. |
6690 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6691 | if (SvUTF8(sv1)) { |
799ef3cb | 6692 | if (PL_encoding) { |
553e1bcc AT |
6693 | svrecode = newSVpvn(pv2, cur2); |
6694 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6695 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6696 | } |
6697 | else { | |
e1ec3a88 | 6698 | pv2 = tpv = (char*)bytes_to_utf8((const U8*)pv2, &cur2); |
799ef3cb | 6699 | } |
cf48d248 JH |
6700 | } |
6701 | else { | |
799ef3cb | 6702 | if (PL_encoding) { |
553e1bcc AT |
6703 | svrecode = newSVpvn(pv1, cur1); |
6704 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6705 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6706 | } |
6707 | else { | |
e1ec3a88 | 6708 | pv1 = tpv = (char*)bytes_to_utf8((const U8*)pv1, &cur1); |
799ef3cb | 6709 | } |
cf48d248 JH |
6710 | } |
6711 | } | |
6712 | ||
e01b9e88 | 6713 | if (!cur1) { |
cf48d248 | 6714 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6715 | } else if (!cur2) { |
cf48d248 JH |
6716 | cmp = 1; |
6717 | } else { | |
e1ec3a88 | 6718 | const I32 retval = memcmp((const void*)pv1, (const void*)pv2, cur1 < cur2 ? cur1 : cur2); |
e01b9e88 SC |
6719 | |
6720 | if (retval) { | |
cf48d248 | 6721 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6722 | } else if (cur1 == cur2) { |
cf48d248 JH |
6723 | cmp = 0; |
6724 | } else { | |
6725 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6726 | } |
cf48d248 | 6727 | } |
16660edb | 6728 | |
553e1bcc AT |
6729 | if (svrecode) |
6730 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6731 | |
553e1bcc AT |
6732 | if (tpv) |
6733 | Safefree(tpv); | |
cf48d248 JH |
6734 | |
6735 | return cmp; | |
bbce6d69 | 6736 | } |
16660edb | 6737 | |
c461cf8f JH |
6738 | /* |
6739 | =for apidoc sv_cmp_locale | |
6740 | ||
645c22ef DM |
6741 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6742 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6743 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6744 | |
6745 | =cut | |
6746 | */ | |
6747 | ||
bbce6d69 | 6748 | I32 |
864dbfa3 | 6749 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6750 | { |
36477c24 | 6751 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6752 | |
bbce6d69 | 6753 | char *pv1, *pv2; |
6754 | STRLEN len1, len2; | |
6755 | I32 retval; | |
16660edb | 6756 | |
3280af22 | 6757 | if (PL_collation_standard) |
bbce6d69 | 6758 | goto raw_compare; |
16660edb | 6759 | |
bbce6d69 | 6760 | len1 = 0; |
8ac85365 | 6761 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6762 | len2 = 0; |
8ac85365 | 6763 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6764 | |
bbce6d69 | 6765 | if (!pv1 || !len1) { |
6766 | if (pv2 && len2) | |
6767 | return -1; | |
6768 | else | |
6769 | goto raw_compare; | |
6770 | } | |
6771 | else { | |
6772 | if (!pv2 || !len2) | |
6773 | return 1; | |
6774 | } | |
16660edb | 6775 | |
bbce6d69 | 6776 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6777 | |
bbce6d69 | 6778 | if (retval) |
16660edb | 6779 | return retval < 0 ? -1 : 1; |
6780 | ||
bbce6d69 | 6781 | /* |
6782 | * When the result of collation is equality, that doesn't mean | |
6783 | * that there are no differences -- some locales exclude some | |
6784 | * characters from consideration. So to avoid false equalities, | |
6785 | * we use the raw string as a tiebreaker. | |
6786 | */ | |
16660edb | 6787 | |
bbce6d69 | 6788 | raw_compare: |
6789 | /* FALL THROUGH */ | |
16660edb | 6790 | |
36477c24 | 6791 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6792 | |
bbce6d69 | 6793 | return sv_cmp(sv1, sv2); |
6794 | } | |
79072805 | 6795 | |
645c22ef | 6796 | |
36477c24 | 6797 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6798 | |
7a4c00b4 | 6799 | /* |
645c22ef DM |
6800 | =for apidoc sv_collxfrm |
6801 | ||
6802 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6803 | ||
6804 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6805 | scalar data of the variable, but transformed to such a format that a normal | |
6806 | memory comparison can be used to compare the data according to the locale | |
6807 | settings. | |
6808 | ||
6809 | =cut | |
6810 | */ | |
6811 | ||
bbce6d69 | 6812 | char * |
864dbfa3 | 6813 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6814 | { |
7a4c00b4 | 6815 | MAGIC *mg; |
16660edb | 6816 | |
14befaf4 | 6817 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6818 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
bbce6d69 | 6819 | char *s, *xf; |
6820 | STRLEN len, xlen; | |
6821 | ||
7a4c00b4 | 6822 | if (mg) |
6823 | Safefree(mg->mg_ptr); | |
bbce6d69 | 6824 | s = SvPV(sv, len); |
6825 | if ((xf = mem_collxfrm(s, len, &xlen))) { | |
ff0cee69 | 6826 | if (SvREADONLY(sv)) { |
6827 | SAVEFREEPV(xf); | |
6828 | *nxp = xlen; | |
3280af22 | 6829 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6830 | } |
7a4c00b4 | 6831 | if (! mg) { |
14befaf4 DM |
6832 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6833 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6834 | assert(mg); |
bbce6d69 | 6835 | } |
7a4c00b4 | 6836 | mg->mg_ptr = xf; |
565764a8 | 6837 | mg->mg_len = xlen; |
7a4c00b4 | 6838 | } |
6839 | else { | |
ff0cee69 | 6840 | if (mg) { |
6841 | mg->mg_ptr = NULL; | |
565764a8 | 6842 | mg->mg_len = -1; |
ff0cee69 | 6843 | } |
bbce6d69 | 6844 | } |
6845 | } | |
7a4c00b4 | 6846 | if (mg && mg->mg_ptr) { |
565764a8 | 6847 | *nxp = mg->mg_len; |
3280af22 | 6848 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6849 | } |
6850 | else { | |
6851 | *nxp = 0; | |
6852 | return NULL; | |
16660edb | 6853 | } |
79072805 LW |
6854 | } |
6855 | ||
36477c24 | 6856 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6857 | |
c461cf8f JH |
6858 | /* |
6859 | =for apidoc sv_gets | |
6860 | ||
6861 | Get a line from the filehandle and store it into the SV, optionally | |
6862 | appending to the currently-stored string. | |
6863 | ||
6864 | =cut | |
6865 | */ | |
6866 | ||
79072805 | 6867 | char * |
864dbfa3 | 6868 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6869 | { |
e1ec3a88 | 6870 | const char *rsptr; |
c07a80fd | 6871 | STRLEN rslen; |
6872 | register STDCHAR rslast; | |
6873 | register STDCHAR *bp; | |
6874 | register I32 cnt; | |
9c5ffd7c | 6875 | I32 i = 0; |
8bfdd7d9 | 6876 | I32 rspara = 0; |
e311fd51 | 6877 | I32 recsize; |
c07a80fd | 6878 | |
bc44a8a2 NC |
6879 | if (SvTHINKFIRST(sv)) |
6880 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6881 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6882 | from <>. | |
6883 | However, perlbench says it's slower, because the existing swipe code | |
6884 | is faster than copy on write. | |
6885 | Swings and roundabouts. */ | |
6fc92669 | 6886 | (void)SvUPGRADE(sv, SVt_PV); |
99491443 | 6887 | |
ff68c719 | 6888 | SvSCREAM_off(sv); |
efd8b2ba AE |
6889 | |
6890 | if (append) { | |
6891 | if (PerlIO_isutf8(fp)) { | |
6892 | if (!SvUTF8(sv)) { | |
6893 | sv_utf8_upgrade_nomg(sv); | |
6894 | sv_pos_u2b(sv,&append,0); | |
6895 | } | |
6896 | } else if (SvUTF8(sv)) { | |
6897 | SV *tsv = NEWSV(0,0); | |
6898 | sv_gets(tsv, fp, 0); | |
6899 | sv_utf8_upgrade_nomg(tsv); | |
6900 | SvCUR_set(sv,append); | |
6901 | sv_catsv(sv,tsv); | |
6902 | sv_free(tsv); | |
6903 | goto return_string_or_null; | |
6904 | } | |
6905 | } | |
6906 | ||
6907 | SvPOK_only(sv); | |
6908 | if (PerlIO_isutf8(fp)) | |
6909 | SvUTF8_on(sv); | |
c07a80fd | 6910 | |
923e4eb5 | 6911 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
6912 | /* we always read code in line mode */ |
6913 | rsptr = "\n"; | |
6914 | rslen = 1; | |
6915 | } | |
6916 | else if (RsSNARF(PL_rs)) { | |
7a5fa8a2 NIS |
6917 | /* If it is a regular disk file use size from stat() as estimate |
6918 | of amount we are going to read - may result in malloc-ing | |
6919 | more memory than we realy need if layers bellow reduce | |
e468d35b NIS |
6920 | size we read (e.g. CRLF or a gzip layer) |
6921 | */ | |
e311fd51 | 6922 | Stat_t st; |
e468d35b | 6923 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
f54cb97a | 6924 | const Off_t offset = PerlIO_tell(fp); |
58f1856e | 6925 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6926 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6927 | } | |
6928 | } | |
c07a80fd | 6929 | rsptr = NULL; |
6930 | rslen = 0; | |
6931 | } | |
3280af22 | 6932 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6933 | I32 bytesread; |
5b2b9c68 HM |
6934 | char *buffer; |
6935 | ||
6936 | /* Grab the size of the record we're getting */ | |
3280af22 | 6937 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 6938 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6939 | /* Go yank in */ |
6940 | #ifdef VMS | |
6941 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6942 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6943 | /* doing, but we've got no other real choice - except avoid stdio |
6944 | as implementation - perhaps write a :vms layer ? | |
6945 | */ | |
5b2b9c68 HM |
6946 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6947 | #else | |
6948 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6949 | #endif | |
27e6ca2d AE |
6950 | if (bytesread < 0) |
6951 | bytesread = 0; | |
e311fd51 | 6952 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6953 | buffer[bytesread] = '\0'; |
efd8b2ba | 6954 | goto return_string_or_null; |
5b2b9c68 | 6955 | } |
3280af22 | 6956 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6957 | rsptr = "\n\n"; |
6958 | rslen = 2; | |
8bfdd7d9 | 6959 | rspara = 1; |
c07a80fd | 6960 | } |
7d59b7e4 NIS |
6961 | else { |
6962 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6963 | if (PerlIO_isutf8(fp)) { | |
6964 | rsptr = SvPVutf8(PL_rs, rslen); | |
6965 | } | |
6966 | else { | |
6967 | if (SvUTF8(PL_rs)) { | |
6968 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
6969 | Perl_croak(aTHX_ "Wide character in $/"); | |
6970 | } | |
6971 | } | |
6972 | rsptr = SvPV(PL_rs, rslen); | |
6973 | } | |
6974 | } | |
6975 | ||
c07a80fd | 6976 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
6977 | ||
8bfdd7d9 | 6978 | if (rspara) { /* have to do this both before and after */ |
79072805 | 6979 | do { /* to make sure file boundaries work right */ |
760ac839 | 6980 | if (PerlIO_eof(fp)) |
a0d0e21e | 6981 | return 0; |
760ac839 | 6982 | i = PerlIO_getc(fp); |
79072805 | 6983 | if (i != '\n') { |
a0d0e21e LW |
6984 | if (i == -1) |
6985 | return 0; | |
760ac839 | 6986 | PerlIO_ungetc(fp,i); |
79072805 LW |
6987 | break; |
6988 | } | |
6989 | } while (i != EOF); | |
6990 | } | |
c07a80fd | 6991 | |
760ac839 LW |
6992 | /* See if we know enough about I/O mechanism to cheat it ! */ |
6993 | ||
6994 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 6995 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
6996 | enough here - and may even be a macro allowing compile |
6997 | time optimization. | |
6998 | */ | |
6999 | ||
7000 | if (PerlIO_fast_gets(fp)) { | |
7001 | ||
7002 | /* | |
7003 | * We're going to steal some values from the stdio struct | |
7004 | * and put EVERYTHING in the innermost loop into registers. | |
7005 | */ | |
7006 | register STDCHAR *ptr; | |
7007 | STRLEN bpx; | |
7008 | I32 shortbuffered; | |
7009 | ||
16660edb | 7010 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
7011 | /* An ungetc()d char is handled separately from the regular | |
7012 | * buffer, so we getc() it back out and stuff it in the buffer. | |
7013 | */ | |
7014 | i = PerlIO_getc(fp); | |
7015 | if (i == EOF) return 0; | |
7016 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
7017 | (*fp)->_cnt++; | |
7018 | #endif | |
c07a80fd | 7019 | |
c2960299 | 7020 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 7021 | |
a20bf0c3 | 7022 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b | 7023 | /* make sure we have the room */ |
7a5fa8a2 | 7024 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { |
e468d35b | 7025 | /* Not room for all of it |
7a5fa8a2 | 7026 | if we are looking for a separator and room for some |
e468d35b NIS |
7027 | */ |
7028 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7a5fa8a2 | 7029 | /* just process what we have room for */ |
79072805 LW |
7030 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
7031 | cnt -= shortbuffered; | |
7032 | } | |
7033 | else { | |
7034 | shortbuffered = 0; | |
bbce6d69 | 7035 | /* remember that cnt can be negative */ |
eb160463 | 7036 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
7037 | } |
7038 | } | |
7a5fa8a2 | 7039 | else |
79072805 | 7040 | shortbuffered = 0; |
c07a80fd | 7041 | bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 7042 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 7043 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7044 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 7045 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 7046 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7047 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7048 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
7049 | for (;;) { |
7050 | screamer: | |
93a17b20 | 7051 | if (cnt > 0) { |
c07a80fd | 7052 | if (rslen) { |
760ac839 LW |
7053 | while (cnt > 0) { /* this | eat */ |
7054 | cnt--; | |
c07a80fd | 7055 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
7056 | goto thats_all_folks; /* screams | sed :-) */ | |
7057 | } | |
7058 | } | |
7059 | else { | |
1c846c1f NIS |
7060 | Copy(ptr, bp, cnt, char); /* this | eat */ |
7061 | bp += cnt; /* screams | dust */ | |
c07a80fd | 7062 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 7063 | cnt = 0; |
93a17b20 | 7064 | } |
79072805 LW |
7065 | } |
7066 | ||
748a9306 | 7067 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
7068 | cnt = shortbuffered; |
7069 | shortbuffered = 0; | |
c07a80fd | 7070 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
7071 | SvCUR_set(sv, bpx); |
7072 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
c07a80fd | 7073 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
7074 | continue; |
7075 | } | |
7076 | ||
16660edb | 7077 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
7078 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
7079 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 7080 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 7081 | #if 0 |
16660edb | 7082 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7083 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7084 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7085 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7086 | #endif |
1c846c1f | 7087 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 7088 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
7089 | another abstraction. */ | |
760ac839 | 7090 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 7091 | #if 0 |
16660edb | 7092 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7093 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7094 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7095 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7096 | #endif |
a20bf0c3 JH |
7097 | cnt = PerlIO_get_cnt(fp); |
7098 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 7099 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7100 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 7101 | |
748a9306 LW |
7102 | if (i == EOF) /* all done for ever? */ |
7103 | goto thats_really_all_folks; | |
7104 | ||
c07a80fd | 7105 | bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */ |
79072805 LW |
7106 | SvCUR_set(sv, bpx); |
7107 | SvGROW(sv, bpx + cnt + 2); | |
c07a80fd | 7108 | bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */ |
7109 | ||
eb160463 | 7110 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 7111 | |
c07a80fd | 7112 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 7113 | goto thats_all_folks; |
79072805 LW |
7114 | } |
7115 | ||
7116 | thats_all_folks: | |
eb160463 | 7117 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX(sv)) < rslen) || |
36477c24 | 7118 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 7119 | goto screamer; /* go back to the fray */ |
79072805 LW |
7120 | thats_really_all_folks: |
7121 | if (shortbuffered) | |
7122 | cnt += shortbuffered; | |
16660edb | 7123 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7124 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 7125 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 7126 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7127 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7128 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7129 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 7130 | *bp = '\0'; |
760ac839 | 7131 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */ |
16660edb | 7132 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 7133 | "Screamer: done, len=%ld, string=|%.*s|\n", |
7134 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv))); | |
760ac839 LW |
7135 | } |
7136 | else | |
79072805 | 7137 | { |
6edd2cd5 | 7138 | /*The big, slow, and stupid way. */ |
27da23d5 | 7139 | #ifdef USE_HEAP_INSTEAD_OF_STACK /* Even slower way. */ |
6edd2cd5 JH |
7140 | STDCHAR *buf = 0; |
7141 | New(0, buf, 8192, STDCHAR); | |
7142 | assert(buf); | |
4d2c4e07 | 7143 | #else |
6edd2cd5 | 7144 | STDCHAR buf[8192]; |
4d2c4e07 | 7145 | #endif |
79072805 | 7146 | |
760ac839 | 7147 | screamer2: |
c07a80fd | 7148 | if (rslen) { |
6867be6d | 7149 | const register STDCHAR *bpe = buf + sizeof(buf); |
760ac839 | 7150 | bp = buf; |
eb160463 | 7151 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
7152 | ; /* keep reading */ |
7153 | cnt = bp - buf; | |
c07a80fd | 7154 | } |
7155 | else { | |
760ac839 | 7156 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 7157 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
7158 | * both args of ?: operator, causing EOF to change into 255 | |
7159 | */ | |
37be0adf | 7160 | if (cnt > 0) |
cbe9e203 JH |
7161 | i = (U8)buf[cnt - 1]; |
7162 | else | |
37be0adf | 7163 | i = EOF; |
c07a80fd | 7164 | } |
79072805 | 7165 | |
cbe9e203 JH |
7166 | if (cnt < 0) |
7167 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
7168 | if (append) | |
7169 | sv_catpvn(sv, (char *) buf, cnt); | |
7170 | else | |
7171 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 7172 | |
7173 | if (i != EOF && /* joy */ | |
7174 | (!rslen || | |
7175 | SvCUR(sv) < rslen || | |
36477c24 | 7176 | memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
7177 | { |
7178 | append = -1; | |
63e4d877 CS |
7179 | /* |
7180 | * If we're reading from a TTY and we get a short read, | |
7181 | * indicating that the user hit his EOF character, we need | |
7182 | * to notice it now, because if we try to read from the TTY | |
7183 | * again, the EOF condition will disappear. | |
7184 | * | |
7185 | * The comparison of cnt to sizeof(buf) is an optimization | |
7186 | * that prevents unnecessary calls to feof(). | |
7187 | * | |
7188 | * - jik 9/25/96 | |
7189 | */ | |
7190 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
7191 | goto screamer2; | |
79072805 | 7192 | } |
6edd2cd5 | 7193 | |
27da23d5 | 7194 | #ifdef USE_HEAP_INSTEAD_OF_STACK |
6edd2cd5 JH |
7195 | Safefree(buf); |
7196 | #endif | |
79072805 LW |
7197 | } |
7198 | ||
8bfdd7d9 | 7199 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 7200 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 7201 | i = PerlIO_getc(fp); |
79072805 | 7202 | if (i != '\n') { |
760ac839 | 7203 | PerlIO_ungetc(fp,i); |
79072805 LW |
7204 | break; |
7205 | } | |
7206 | } | |
7207 | } | |
c07a80fd | 7208 | |
efd8b2ba | 7209 | return_string_or_null: |
c07a80fd | 7210 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
7211 | } |
7212 | ||
954c1994 GS |
7213 | /* |
7214 | =for apidoc sv_inc | |
7215 | ||
645c22ef DM |
7216 | Auto-increment of the value in the SV, doing string to numeric conversion |
7217 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7218 | |
7219 | =cut | |
7220 | */ | |
7221 | ||
79072805 | 7222 | void |
864dbfa3 | 7223 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
7224 | { |
7225 | register char *d; | |
463ee0b2 | 7226 | int flags; |
79072805 LW |
7227 | |
7228 | if (!sv) | |
7229 | return; | |
b23a5f78 GB |
7230 | if (SvGMAGICAL(sv)) |
7231 | mg_get(sv); | |
ed6116ce | 7232 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7233 | if (SvIsCOW(sv)) |
7234 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7235 | if (SvREADONLY(sv)) { |
923e4eb5 | 7236 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7237 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7238 | } |
a0d0e21e | 7239 | if (SvROK(sv)) { |
b5be31e9 | 7240 | IV i; |
9e7bc3e8 JD |
7241 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
7242 | return; | |
56431972 | 7243 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7244 | sv_unref(sv); |
7245 | sv_setiv(sv, i); | |
a0d0e21e | 7246 | } |
ed6116ce | 7247 | } |
8990e307 | 7248 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7249 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
7250 | /* It's (privately or publicly) a float, but not tested as an | |
7251 | integer, so test it to see. */ | |
d460ef45 | 7252 | (void) SvIV(sv); |
28e5dec8 JH |
7253 | flags = SvFLAGS(sv); |
7254 | } | |
7255 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
7256 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7257 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7258 | oops_its_int: |
59d8ce62 | 7259 | #endif |
25da4f38 IZ |
7260 | if (SvIsUV(sv)) { |
7261 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 7262 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
7263 | else |
7264 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 7265 | SvUV_set(sv, SvUVX(sv) + 1); |
25da4f38 IZ |
7266 | } else { |
7267 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 7268 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
7269 | else { |
7270 | (void)SvIOK_only(sv); | |
45977657 | 7271 | SvIV_set(sv, SvIVX(sv) + 1); |
1c846c1f | 7272 | } |
55497cff | 7273 | } |
79072805 LW |
7274 | return; |
7275 | } | |
28e5dec8 JH |
7276 | if (flags & SVp_NOK) { |
7277 | (void)SvNOK_only(sv); | |
9d6ce603 | 7278 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
7279 | return; |
7280 | } | |
7281 | ||
8990e307 | 7282 | if (!(flags & SVp_POK) || !*SvPVX(sv)) { |
28e5dec8 JH |
7283 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
7284 | sv_upgrade(sv, SVt_IV); | |
7285 | (void)SvIOK_only(sv); | |
45977657 | 7286 | SvIV_set(sv, 1); |
79072805 LW |
7287 | return; |
7288 | } | |
463ee0b2 | 7289 | d = SvPVX(sv); |
79072805 LW |
7290 | while (isALPHA(*d)) d++; |
7291 | while (isDIGIT(*d)) d++; | |
7292 | if (*d) { | |
28e5dec8 | 7293 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 7294 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
7295 | warnings. Probably ought to make the sv_iv_please() that does |
7296 | the conversion if possible, and silently. */ | |
504618e9 | 7297 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7298 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7299 | /* Need to try really hard to see if it's an integer. | |
7300 | 9.22337203685478e+18 is an integer. | |
7301 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7302 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
7303 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
7304 | or we go insane. */ | |
d460ef45 | 7305 | |
28e5dec8 JH |
7306 | (void) sv_2iv(sv); |
7307 | if (SvIOK(sv)) | |
7308 | goto oops_its_int; | |
7309 | ||
7310 | /* sv_2iv *should* have made this an NV */ | |
7311 | if (flags & SVp_NOK) { | |
7312 | (void)SvNOK_only(sv); | |
9d6ce603 | 7313 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
7314 | return; |
7315 | } | |
7316 | /* I don't think we can get here. Maybe I should assert this | |
7317 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7318 | Fall through. */ | |
7319 | #if defined(USE_LONG_DOUBLE) | |
7320 | 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", | |
7321 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
7322 | #else | |
1779d84d | 7323 | 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 |
7324 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
7325 | #endif | |
7326 | } | |
7327 | #endif /* PERL_PRESERVE_IVUV */ | |
7328 | sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); | |
79072805 LW |
7329 | return; |
7330 | } | |
7331 | d--; | |
463ee0b2 | 7332 | while (d >= SvPVX(sv)) { |
79072805 LW |
7333 | if (isDIGIT(*d)) { |
7334 | if (++*d <= '9') | |
7335 | return; | |
7336 | *(d--) = '0'; | |
7337 | } | |
7338 | else { | |
9d116dd7 JH |
7339 | #ifdef EBCDIC |
7340 | /* MKS: The original code here died if letters weren't consecutive. | |
7341 | * at least it didn't have to worry about non-C locales. The | |
7342 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 7343 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
7344 | * [A-Za-z] are accepted by isALPHA in the C locale. |
7345 | */ | |
7346 | if (*d != 'z' && *d != 'Z') { | |
7347 | do { ++*d; } while (!isALPHA(*d)); | |
7348 | return; | |
7349 | } | |
7350 | *(d--) -= 'z' - 'a'; | |
7351 | #else | |
79072805 LW |
7352 | ++*d; |
7353 | if (isALPHA(*d)) | |
7354 | return; | |
7355 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 7356 | #endif |
79072805 LW |
7357 | } |
7358 | } | |
7359 | /* oh,oh, the number grew */ | |
7360 | SvGROW(sv, SvCUR(sv) + 2); | |
b162af07 | 7361 | SvCUR_set(sv, SvCUR(sv) + 1); |
463ee0b2 | 7362 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--) |
79072805 LW |
7363 | *d = d[-1]; |
7364 | if (isDIGIT(d[1])) | |
7365 | *d = '1'; | |
7366 | else | |
7367 | *d = d[1]; | |
7368 | } | |
7369 | ||
954c1994 GS |
7370 | /* |
7371 | =for apidoc sv_dec | |
7372 | ||
645c22ef DM |
7373 | Auto-decrement of the value in the SV, doing string to numeric conversion |
7374 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7375 | |
7376 | =cut | |
7377 | */ | |
7378 | ||
79072805 | 7379 | void |
864dbfa3 | 7380 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 7381 | { |
463ee0b2 LW |
7382 | int flags; |
7383 | ||
79072805 LW |
7384 | if (!sv) |
7385 | return; | |
b23a5f78 GB |
7386 | if (SvGMAGICAL(sv)) |
7387 | mg_get(sv); | |
ed6116ce | 7388 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7389 | if (SvIsCOW(sv)) |
7390 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7391 | if (SvREADONLY(sv)) { |
923e4eb5 | 7392 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7393 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7394 | } |
a0d0e21e | 7395 | if (SvROK(sv)) { |
b5be31e9 | 7396 | IV i; |
9e7bc3e8 JD |
7397 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
7398 | return; | |
56431972 | 7399 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7400 | sv_unref(sv); |
7401 | sv_setiv(sv, i); | |
a0d0e21e | 7402 | } |
ed6116ce | 7403 | } |
28e5dec8 JH |
7404 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
7405 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 7406 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7407 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
7408 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7409 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7410 | oops_its_int: |
59d8ce62 | 7411 | #endif |
25da4f38 IZ |
7412 | if (SvIsUV(sv)) { |
7413 | if (SvUVX(sv) == 0) { | |
7414 | (void)SvIOK_only(sv); | |
45977657 | 7415 | SvIV_set(sv, -1); |
25da4f38 IZ |
7416 | } |
7417 | else { | |
7418 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 7419 | SvUV_set(sv, SvUVX(sv) + 1); |
1c846c1f | 7420 | } |
25da4f38 IZ |
7421 | } else { |
7422 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 7423 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
7424 | else { |
7425 | (void)SvIOK_only(sv); | |
45977657 | 7426 | SvIV_set(sv, SvIVX(sv) - 1); |
1c846c1f | 7427 | } |
55497cff | 7428 | } |
7429 | return; | |
7430 | } | |
28e5dec8 | 7431 | if (flags & SVp_NOK) { |
9d6ce603 | 7432 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
7433 | (void)SvNOK_only(sv); |
7434 | return; | |
7435 | } | |
8990e307 | 7436 | if (!(flags & SVp_POK)) { |
4633a7c4 LW |
7437 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
7438 | sv_upgrade(sv, SVt_NV); | |
f599b64b | 7439 | SvNV_set(sv, 1.0); |
a0d0e21e | 7440 | (void)SvNOK_only(sv); |
79072805 LW |
7441 | return; |
7442 | } | |
28e5dec8 JH |
7443 | #ifdef PERL_PRESERVE_IVUV |
7444 | { | |
504618e9 | 7445 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7446 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7447 | /* Need to try really hard to see if it's an integer. | |
7448 | 9.22337203685478e+18 is an integer. | |
7449 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7450 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
7451 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
7452 | or we go insane. */ | |
d460ef45 | 7453 | |
28e5dec8 JH |
7454 | (void) sv_2iv(sv); |
7455 | if (SvIOK(sv)) | |
7456 | goto oops_its_int; | |
7457 | ||
7458 | /* sv_2iv *should* have made this an NV */ | |
7459 | if (flags & SVp_NOK) { | |
7460 | (void)SvNOK_only(sv); | |
9d6ce603 | 7461 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
7462 | return; |
7463 | } | |
7464 | /* I don't think we can get here. Maybe I should assert this | |
7465 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7466 | Fall through. */ | |
7467 | #if defined(USE_LONG_DOUBLE) | |
7468 | 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", | |
7469 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); | |
7470 | #else | |
1779d84d | 7471 | 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 |
7472 | SvPVX(sv), SvIVX(sv), SvNVX(sv))); |
7473 | #endif | |
7474 | } | |
7475 | } | |
7476 | #endif /* PERL_PRESERVE_IVUV */ | |
097ee67d | 7477 | sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */ |
79072805 LW |
7478 | } |
7479 | ||
954c1994 GS |
7480 | /* |
7481 | =for apidoc sv_mortalcopy | |
7482 | ||
645c22ef | 7483 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
7484 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
7485 | explicit call to FREETMPS, or by an implicit call at places such as | |
7486 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
7487 | |
7488 | =cut | |
7489 | */ | |
7490 | ||
79072805 LW |
7491 | /* Make a string that will exist for the duration of the expression |
7492 | * evaluation. Actually, it may have to last longer than that, but | |
7493 | * hopefully we won't free it until it has been assigned to a | |
7494 | * permanent location. */ | |
7495 | ||
7496 | SV * | |
864dbfa3 | 7497 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 7498 | { |
463ee0b2 | 7499 | register SV *sv; |
b881518d | 7500 | |
4561caa4 | 7501 | new_SV(sv); |
79072805 | 7502 | sv_setsv(sv,oldstr); |
677b06e3 GS |
7503 | EXTEND_MORTAL(1); |
7504 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
7505 | SvTEMP_on(sv); |
7506 | return sv; | |
7507 | } | |
7508 | ||
954c1994 GS |
7509 | /* |
7510 | =for apidoc sv_newmortal | |
7511 | ||
645c22ef | 7512 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
7513 | set to 1. It will be destroyed "soon", either by an explicit call to |
7514 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
7515 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
7516 | |
7517 | =cut | |
7518 | */ | |
7519 | ||
8990e307 | 7520 | SV * |
864dbfa3 | 7521 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
7522 | { |
7523 | register SV *sv; | |
7524 | ||
4561caa4 | 7525 | new_SV(sv); |
8990e307 | 7526 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
7527 | EXTEND_MORTAL(1); |
7528 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
7529 | return sv; |
7530 | } | |
7531 | ||
954c1994 GS |
7532 | /* |
7533 | =for apidoc sv_2mortal | |
7534 | ||
d4236ebc DM |
7535 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
7536 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
7537 | statement boundaries. SvTEMP() is turned on which means that the SV's |
7538 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
7539 | and C<sv_mortalcopy>. | |
954c1994 GS |
7540 | |
7541 | =cut | |
7542 | */ | |
7543 | ||
79072805 | 7544 | SV * |
864dbfa3 | 7545 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 | 7546 | { |
27da23d5 | 7547 | dVAR; |
79072805 LW |
7548 | if (!sv) |
7549 | return sv; | |
d689ffdd | 7550 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 7551 | return sv; |
677b06e3 GS |
7552 | EXTEND_MORTAL(1); |
7553 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 7554 | SvTEMP_on(sv); |
79072805 LW |
7555 | return sv; |
7556 | } | |
7557 | ||
954c1994 GS |
7558 | /* |
7559 | =for apidoc newSVpv | |
7560 | ||
7561 | Creates a new SV and copies a string into it. The reference count for the | |
7562 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
7563 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
7564 | ||
7565 | =cut | |
7566 | */ | |
7567 | ||
79072805 | 7568 | SV * |
864dbfa3 | 7569 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 7570 | { |
463ee0b2 | 7571 | register SV *sv; |
79072805 | 7572 | |
4561caa4 | 7573 | new_SV(sv); |
79072805 LW |
7574 | if (!len) |
7575 | len = strlen(s); | |
7576 | sv_setpvn(sv,s,len); | |
7577 | return sv; | |
7578 | } | |
7579 | ||
954c1994 GS |
7580 | /* |
7581 | =for apidoc newSVpvn | |
7582 | ||
7583 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 7584 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 7585 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 7586 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
7587 | |
7588 | =cut | |
7589 | */ | |
7590 | ||
9da1e3b5 | 7591 | SV * |
864dbfa3 | 7592 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7593 | { |
7594 | register SV *sv; | |
7595 | ||
7596 | new_SV(sv); | |
9da1e3b5 MUN |
7597 | sv_setpvn(sv,s,len); |
7598 | return sv; | |
7599 | } | |
7600 | ||
1c846c1f NIS |
7601 | /* |
7602 | =for apidoc newSVpvn_share | |
7603 | ||
645c22ef DM |
7604 | Creates a new SV with its SvPVX pointing to a shared string in the string |
7605 | table. If the string does not already exist in the table, it is created | |
7606 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7607 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7608 | otherwise the hash is computed. The idea here is that as the string table | |
7609 | is used for shared hash keys these strings will have SvPVX == HeKEY and | |
7610 | hash lookup will avoid string compare. | |
1c846c1f NIS |
7611 | |
7612 | =cut | |
7613 | */ | |
7614 | ||
7615 | SV * | |
c3654f1a | 7616 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7617 | { |
7618 | register SV *sv; | |
c3654f1a IH |
7619 | bool is_utf8 = FALSE; |
7620 | if (len < 0) { | |
77caf834 | 7621 | STRLEN tmplen = -len; |
c3654f1a | 7622 | is_utf8 = TRUE; |
75a54232 | 7623 | /* See the note in hv.c:hv_fetch() --jhi */ |
e1ec3a88 | 7624 | src = (char*)bytes_from_utf8((const U8*)src, &tmplen, &is_utf8); |
75a54232 JH |
7625 | len = tmplen; |
7626 | } | |
1c846c1f | 7627 | if (!hash) |
5afd6d42 | 7628 | PERL_HASH(hash, src, len); |
1c846c1f NIS |
7629 | new_SV(sv); |
7630 | sv_upgrade(sv, SVt_PVIV); | |
f880fe2f | 7631 | SvPV_set(sv, sharepvn(src, is_utf8?-len:len, hash)); |
b162af07 | 7632 | SvCUR_set(sv, len); |
607fa7f2 | 7633 | SvUV_set(sv, hash); |
b162af07 | 7634 | SvLEN_set(sv, 0); |
1c846c1f NIS |
7635 | SvREADONLY_on(sv); |
7636 | SvFAKE_on(sv); | |
7637 | SvPOK_on(sv); | |
c3654f1a IH |
7638 | if (is_utf8) |
7639 | SvUTF8_on(sv); | |
1c846c1f NIS |
7640 | return sv; |
7641 | } | |
7642 | ||
645c22ef | 7643 | |
cea2e8a9 | 7644 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7645 | |
7646 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7647 | * version of the main function, (which may itself be aliased to us). | |
7648 | * Don't access this version directly. | |
7649 | */ | |
7650 | ||
46fc3d4c | 7651 | SV * |
cea2e8a9 | 7652 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7653 | { |
cea2e8a9 | 7654 | dTHX; |
46fc3d4c | 7655 | register SV *sv; |
7656 | va_list args; | |
46fc3d4c | 7657 | va_start(args, pat); |
c5be433b | 7658 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7659 | va_end(args); |
7660 | return sv; | |
7661 | } | |
cea2e8a9 | 7662 | #endif |
46fc3d4c | 7663 | |
954c1994 GS |
7664 | /* |
7665 | =for apidoc newSVpvf | |
7666 | ||
645c22ef | 7667 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7668 | C<sprintf>. |
7669 | ||
7670 | =cut | |
7671 | */ | |
7672 | ||
cea2e8a9 GS |
7673 | SV * |
7674 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7675 | { | |
7676 | register SV *sv; | |
7677 | va_list args; | |
cea2e8a9 | 7678 | va_start(args, pat); |
c5be433b | 7679 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7680 | va_end(args); |
7681 | return sv; | |
7682 | } | |
46fc3d4c | 7683 | |
645c22ef DM |
7684 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7685 | ||
79072805 | 7686 | SV * |
c5be433b GS |
7687 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7688 | { | |
7689 | register SV *sv; | |
7690 | new_SV(sv); | |
7691 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7692 | return sv; | |
7693 | } | |
7694 | ||
954c1994 GS |
7695 | /* |
7696 | =for apidoc newSVnv | |
7697 | ||
7698 | Creates a new SV and copies a floating point value into it. | |
7699 | The reference count for the SV is set to 1. | |
7700 | ||
7701 | =cut | |
7702 | */ | |
7703 | ||
c5be433b | 7704 | SV * |
65202027 | 7705 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7706 | { |
463ee0b2 | 7707 | register SV *sv; |
79072805 | 7708 | |
4561caa4 | 7709 | new_SV(sv); |
79072805 LW |
7710 | sv_setnv(sv,n); |
7711 | return sv; | |
7712 | } | |
7713 | ||
954c1994 GS |
7714 | /* |
7715 | =for apidoc newSViv | |
7716 | ||
7717 | Creates a new SV and copies an integer into it. The reference count for the | |
7718 | SV is set to 1. | |
7719 | ||
7720 | =cut | |
7721 | */ | |
7722 | ||
79072805 | 7723 | SV * |
864dbfa3 | 7724 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7725 | { |
463ee0b2 | 7726 | register SV *sv; |
79072805 | 7727 | |
4561caa4 | 7728 | new_SV(sv); |
79072805 LW |
7729 | sv_setiv(sv,i); |
7730 | return sv; | |
7731 | } | |
7732 | ||
954c1994 | 7733 | /* |
1a3327fb JH |
7734 | =for apidoc newSVuv |
7735 | ||
7736 | Creates a new SV and copies an unsigned integer into it. | |
7737 | The reference count for the SV is set to 1. | |
7738 | ||
7739 | =cut | |
7740 | */ | |
7741 | ||
7742 | SV * | |
7743 | Perl_newSVuv(pTHX_ UV u) | |
7744 | { | |
7745 | register SV *sv; | |
7746 | ||
7747 | new_SV(sv); | |
7748 | sv_setuv(sv,u); | |
7749 | return sv; | |
7750 | } | |
7751 | ||
7752 | /* | |
954c1994 GS |
7753 | =for apidoc newRV_noinc |
7754 | ||
7755 | Creates an RV wrapper for an SV. The reference count for the original | |
7756 | SV is B<not> incremented. | |
7757 | ||
7758 | =cut | |
7759 | */ | |
7760 | ||
2304df62 | 7761 | SV * |
864dbfa3 | 7762 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7763 | { |
7764 | register SV *sv; | |
7765 | ||
4561caa4 | 7766 | new_SV(sv); |
2304df62 | 7767 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7768 | SvTEMP_off(tmpRef); |
b162af07 | 7769 | SvRV_set(sv, tmpRef); |
2304df62 | 7770 | SvROK_on(sv); |
2304df62 AD |
7771 | return sv; |
7772 | } | |
7773 | ||
ff276b08 | 7774 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7775 | * newRV_inc is in fact #defined to newRV in sv.h |
7776 | */ | |
7777 | ||
5f05dabc | 7778 | SV * |
864dbfa3 | 7779 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7780 | { |
5f6447b6 | 7781 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7782 | } |
5f05dabc | 7783 | |
954c1994 GS |
7784 | /* |
7785 | =for apidoc newSVsv | |
7786 | ||
7787 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7788 | (Uses C<sv_setsv>). |
954c1994 GS |
7789 | |
7790 | =cut | |
7791 | */ | |
7792 | ||
79072805 | 7793 | SV * |
864dbfa3 | 7794 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7795 | { |
463ee0b2 | 7796 | register SV *sv; |
79072805 LW |
7797 | |
7798 | if (!old) | |
7799 | return Nullsv; | |
8990e307 | 7800 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7801 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7802 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7803 | return Nullsv; |
7804 | } | |
4561caa4 | 7805 | new_SV(sv); |
e90aabeb NC |
7806 | /* SV_GMAGIC is the default for sv_setv() |
7807 | SV_NOSTEAL prevents TEMP buffers being, well, stolen, and saves games | |
7808 | with SvTEMP_off and SvTEMP_on round a call to sv_setsv. */ | |
7809 | sv_setsv_flags(sv, old, SV_GMAGIC | SV_NOSTEAL); | |
463ee0b2 | 7810 | return sv; |
79072805 LW |
7811 | } |
7812 | ||
645c22ef DM |
7813 | /* |
7814 | =for apidoc sv_reset | |
7815 | ||
7816 | Underlying implementation for the C<reset> Perl function. | |
7817 | Note that the perl-level function is vaguely deprecated. | |
7818 | ||
7819 | =cut | |
7820 | */ | |
7821 | ||
79072805 | 7822 | void |
e1ec3a88 | 7823 | Perl_sv_reset(pTHX_ register const char *s, HV *stash) |
79072805 | 7824 | { |
27da23d5 | 7825 | dVAR; |
79072805 LW |
7826 | register HE *entry; |
7827 | register GV *gv; | |
7828 | register SV *sv; | |
7829 | register I32 i; | |
79072805 | 7830 | register I32 max; |
4802d5d7 | 7831 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7832 | |
49d8d3a1 MB |
7833 | if (!stash) |
7834 | return; | |
7835 | ||
79072805 | 7836 | if (!*s) { /* reset ?? searches */ |
8d2f4536 NC |
7837 | MAGIC *mg = mg_find((SV *)stash, PERL_MAGIC_symtab); |
7838 | if (mg) { | |
7839 | PMOP *pm = (PMOP *) mg->mg_obj; | |
7840 | while (pm) { | |
7841 | pm->op_pmdynflags &= ~PMdf_USED; | |
7842 | pm = pm->op_pmnext; | |
7843 | } | |
79072805 LW |
7844 | } |
7845 | return; | |
7846 | } | |
7847 | ||
7848 | /* reset variables */ | |
7849 | ||
7850 | if (!HvARRAY(stash)) | |
7851 | return; | |
463ee0b2 LW |
7852 | |
7853 | Zero(todo, 256, char); | |
79072805 | 7854 | while (*s) { |
4802d5d7 | 7855 | i = (unsigned char)*s; |
79072805 LW |
7856 | if (s[1] == '-') { |
7857 | s += 2; | |
7858 | } | |
4802d5d7 | 7859 | max = (unsigned char)*s++; |
79072805 | 7860 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7861 | todo[i] = 1; |
7862 | } | |
a0d0e21e | 7863 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
79072805 | 7864 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7865 | entry; |
7866 | entry = HeNEXT(entry)) | |
7867 | { | |
1edc1566 | 7868 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7869 | continue; |
1edc1566 | 7870 | gv = (GV*)HeVAL(entry); |
79072805 | 7871 | sv = GvSV(gv); |
9e35f4b3 GS |
7872 | if (SvTHINKFIRST(sv)) { |
7873 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7874 | sv_unref(sv); | |
7875 | continue; | |
7876 | } | |
0c34ef67 | 7877 | SvOK_off(sv); |
79072805 LW |
7878 | if (SvTYPE(sv) >= SVt_PV) { |
7879 | SvCUR_set(sv, 0); | |
463ee0b2 LW |
7880 | if (SvPVX(sv) != Nullch) |
7881 | *SvPVX(sv) = '\0'; | |
44a8e56a | 7882 | SvTAINT(sv); |
79072805 LW |
7883 | } |
7884 | if (GvAV(gv)) { | |
7885 | av_clear(GvAV(gv)); | |
7886 | } | |
bfcb3514 | 7887 | if (GvHV(gv) && !HvNAME_get(GvHV(gv))) { |
463ee0b2 | 7888 | hv_clear(GvHV(gv)); |
2f42fcb0 | 7889 | #ifndef PERL_MICRO |
fa6a1c44 | 7890 | #ifdef USE_ENVIRON_ARRAY |
4efc5df6 GS |
7891 | if (gv == PL_envgv |
7892 | # ifdef USE_ITHREADS | |
7893 | && PL_curinterp == aTHX | |
7894 | # endif | |
7895 | ) | |
7896 | { | |
79072805 | 7897 | environ[0] = Nullch; |
4efc5df6 | 7898 | } |
a0d0e21e | 7899 | #endif |
2f42fcb0 | 7900 | #endif /* !PERL_MICRO */ |
79072805 LW |
7901 | } |
7902 | } | |
7903 | } | |
7904 | } | |
7905 | } | |
7906 | ||
645c22ef DM |
7907 | /* |
7908 | =for apidoc sv_2io | |
7909 | ||
7910 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7911 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7912 | named after the PV if we're a string. | |
7913 | ||
7914 | =cut | |
7915 | */ | |
7916 | ||
46fc3d4c | 7917 | IO* |
864dbfa3 | 7918 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7919 | { |
7920 | IO* io; | |
7921 | GV* gv; | |
7922 | ||
7923 | switch (SvTYPE(sv)) { | |
7924 | case SVt_PVIO: | |
7925 | io = (IO*)sv; | |
7926 | break; | |
7927 | case SVt_PVGV: | |
7928 | gv = (GV*)sv; | |
7929 | io = GvIO(gv); | |
7930 | if (!io) | |
cea2e8a9 | 7931 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 7932 | break; |
7933 | default: | |
7934 | if (!SvOK(sv)) | |
cea2e8a9 | 7935 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 7936 | if (SvROK(sv)) |
7937 | return sv_2io(SvRV(sv)); | |
7a5fd60d | 7938 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
46fc3d4c | 7939 | if (gv) |
7940 | io = GvIO(gv); | |
7941 | else | |
7942 | io = 0; | |
7943 | if (!io) | |
35c1215d | 7944 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 7945 | break; |
7946 | } | |
7947 | return io; | |
7948 | } | |
7949 | ||
645c22ef DM |
7950 | /* |
7951 | =for apidoc sv_2cv | |
7952 | ||
7953 | Using various gambits, try to get a CV from an SV; in addition, try if | |
7954 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
7955 | ||
7956 | =cut | |
7957 | */ | |
7958 | ||
79072805 | 7959 | CV * |
864dbfa3 | 7960 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 7961 | { |
27da23d5 | 7962 | dVAR; |
c04a4dfe JH |
7963 | GV *gv = Nullgv; |
7964 | CV *cv = Nullcv; | |
79072805 LW |
7965 | |
7966 | if (!sv) | |
93a17b20 | 7967 | return *gvp = Nullgv, Nullcv; |
79072805 | 7968 | switch (SvTYPE(sv)) { |
79072805 LW |
7969 | case SVt_PVCV: |
7970 | *st = CvSTASH(sv); | |
7971 | *gvp = Nullgv; | |
7972 | return (CV*)sv; | |
7973 | case SVt_PVHV: | |
7974 | case SVt_PVAV: | |
7975 | *gvp = Nullgv; | |
7976 | return Nullcv; | |
8990e307 LW |
7977 | case SVt_PVGV: |
7978 | gv = (GV*)sv; | |
a0d0e21e | 7979 | *gvp = gv; |
8990e307 LW |
7980 | *st = GvESTASH(gv); |
7981 | goto fix_gv; | |
7982 | ||
79072805 | 7983 | default: |
a0d0e21e LW |
7984 | if (SvGMAGICAL(sv)) |
7985 | mg_get(sv); | |
7986 | if (SvROK(sv)) { | |
f5284f61 IZ |
7987 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
7988 | tryAMAGICunDEREF(to_cv); | |
7989 | ||
62f274bf GS |
7990 | sv = SvRV(sv); |
7991 | if (SvTYPE(sv) == SVt_PVCV) { | |
7992 | cv = (CV*)sv; | |
7993 | *gvp = Nullgv; | |
7994 | *st = CvSTASH(cv); | |
7995 | return cv; | |
7996 | } | |
7997 | else if(isGV(sv)) | |
7998 | gv = (GV*)sv; | |
7999 | else | |
cea2e8a9 | 8000 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 8001 | } |
62f274bf | 8002 | else if (isGV(sv)) |
79072805 LW |
8003 | gv = (GV*)sv; |
8004 | else | |
7a5fd60d | 8005 | gv = gv_fetchsv(sv, lref, SVt_PVCV); |
79072805 LW |
8006 | *gvp = gv; |
8007 | if (!gv) | |
8008 | return Nullcv; | |
8009 | *st = GvESTASH(gv); | |
8990e307 | 8010 | fix_gv: |
8ebc5c01 | 8011 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 8012 | SV *tmpsv; |
748a9306 | 8013 | ENTER; |
4633a7c4 | 8014 | tmpsv = NEWSV(704,0); |
16660edb | 8015 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
8016 | /* XXX this is probably not what they think they're getting. |
8017 | * It has the same effect as "sub name;", i.e. just a forward | |
8018 | * declaration! */ | |
774d564b | 8019 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
8020 | newSVOP(OP_CONST, 0, tmpsv), |
8021 | Nullop, | |
8990e307 | 8022 | Nullop); |
748a9306 | 8023 | LEAVE; |
8ebc5c01 | 8024 | if (!GvCVu(gv)) |
35c1215d NC |
8025 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
8026 | sv); | |
8990e307 | 8027 | } |
8ebc5c01 | 8028 | return GvCVu(gv); |
79072805 LW |
8029 | } |
8030 | } | |
8031 | ||
c461cf8f JH |
8032 | /* |
8033 | =for apidoc sv_true | |
8034 | ||
8035 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
8036 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
8037 | instead use an in-line version. | |
c461cf8f JH |
8038 | |
8039 | =cut | |
8040 | */ | |
8041 | ||
79072805 | 8042 | I32 |
864dbfa3 | 8043 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 8044 | { |
8990e307 LW |
8045 | if (!sv) |
8046 | return 0; | |
79072805 | 8047 | if (SvPOK(sv)) { |
e1ec3a88 | 8048 | const register XPV* tXpv; |
4e35701f | 8049 | if ((tXpv = (XPV*)SvANY(sv)) && |
c2f1de04 | 8050 | (tXpv->xpv_cur > 1 || |
339049b0 | 8051 | (tXpv->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
79072805 LW |
8052 | return 1; |
8053 | else | |
8054 | return 0; | |
8055 | } | |
8056 | else { | |
8057 | if (SvIOK(sv)) | |
463ee0b2 | 8058 | return SvIVX(sv) != 0; |
79072805 LW |
8059 | else { |
8060 | if (SvNOK(sv)) | |
463ee0b2 | 8061 | return SvNVX(sv) != 0.0; |
79072805 | 8062 | else |
463ee0b2 | 8063 | return sv_2bool(sv); |
79072805 LW |
8064 | } |
8065 | } | |
8066 | } | |
79072805 | 8067 | |
645c22ef DM |
8068 | /* |
8069 | =for apidoc sv_iv | |
8070 | ||
8071 | A private implementation of the C<SvIVx> macro for compilers which can't | |
8072 | cope with complex macro expressions. Always use the macro instead. | |
8073 | ||
8074 | =cut | |
8075 | */ | |
8076 | ||
ff68c719 | 8077 | IV |
864dbfa3 | 8078 | Perl_sv_iv(pTHX_ register SV *sv) |
85e6fe83 | 8079 | { |
25da4f38 IZ |
8080 | if (SvIOK(sv)) { |
8081 | if (SvIsUV(sv)) | |
8082 | return (IV)SvUVX(sv); | |
ff68c719 | 8083 | return SvIVX(sv); |
25da4f38 | 8084 | } |
ff68c719 | 8085 | return sv_2iv(sv); |
85e6fe83 | 8086 | } |
85e6fe83 | 8087 | |
645c22ef DM |
8088 | /* |
8089 | =for apidoc sv_uv | |
8090 | ||
8091 | A private implementation of the C<SvUVx> macro for compilers which can't | |
8092 | cope with complex macro expressions. Always use the macro instead. | |
8093 | ||
8094 | =cut | |
8095 | */ | |
8096 | ||
ff68c719 | 8097 | UV |
864dbfa3 | 8098 | Perl_sv_uv(pTHX_ register SV *sv) |
ff68c719 | 8099 | { |
25da4f38 IZ |
8100 | if (SvIOK(sv)) { |
8101 | if (SvIsUV(sv)) | |
8102 | return SvUVX(sv); | |
8103 | return (UV)SvIVX(sv); | |
8104 | } | |
ff68c719 | 8105 | return sv_2uv(sv); |
8106 | } | |
85e6fe83 | 8107 | |
645c22ef DM |
8108 | /* |
8109 | =for apidoc sv_nv | |
8110 | ||
8111 | A private implementation of the C<SvNVx> macro for compilers which can't | |
8112 | cope with complex macro expressions. Always use the macro instead. | |
8113 | ||
8114 | =cut | |
8115 | */ | |
8116 | ||
65202027 | 8117 | NV |
864dbfa3 | 8118 | Perl_sv_nv(pTHX_ register SV *sv) |
79072805 | 8119 | { |
ff68c719 | 8120 | if (SvNOK(sv)) |
8121 | return SvNVX(sv); | |
8122 | return sv_2nv(sv); | |
79072805 | 8123 | } |
79072805 | 8124 | |
09540bc3 JH |
8125 | /* sv_pv() is now a macro using SvPV_nolen(); |
8126 | * this function provided for binary compatibility only | |
8127 | */ | |
8128 | ||
8129 | char * | |
8130 | Perl_sv_pv(pTHX_ SV *sv) | |
8131 | { | |
8132 | STRLEN n_a; | |
8133 | ||
8134 | if (SvPOK(sv)) | |
8135 | return SvPVX(sv); | |
8136 | ||
8137 | return sv_2pv(sv, &n_a); | |
8138 | } | |
8139 | ||
645c22ef DM |
8140 | /* |
8141 | =for apidoc sv_pv | |
8142 | ||
baca2b92 | 8143 | Use the C<SvPV_nolen> macro instead |
645c22ef | 8144 | |
645c22ef DM |
8145 | =for apidoc sv_pvn |
8146 | ||
8147 | A private implementation of the C<SvPV> macro for compilers which can't | |
8148 | cope with complex macro expressions. Always use the macro instead. | |
8149 | ||
8150 | =cut | |
8151 | */ | |
8152 | ||
1fa8b10d | 8153 | char * |
864dbfa3 | 8154 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) |
79072805 | 8155 | { |
85e6fe83 LW |
8156 | if (SvPOK(sv)) { |
8157 | *lp = SvCUR(sv); | |
a0d0e21e | 8158 | return SvPVX(sv); |
85e6fe83 | 8159 | } |
463ee0b2 | 8160 | return sv_2pv(sv, lp); |
79072805 | 8161 | } |
79072805 | 8162 | |
6e9d1081 NC |
8163 | |
8164 | char * | |
8165 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
8166 | { | |
8167 | if (SvPOK(sv)) { | |
8168 | *lp = SvCUR(sv); | |
8169 | return SvPVX(sv); | |
8170 | } | |
8171 | return sv_2pv_flags(sv, lp, 0); | |
8172 | } | |
8173 | ||
09540bc3 JH |
8174 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); |
8175 | * this function provided for binary compatibility only | |
8176 | */ | |
8177 | ||
8178 | char * | |
8179 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
8180 | { | |
8181 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
8182 | } | |
8183 | ||
c461cf8f JH |
8184 | /* |
8185 | =for apidoc sv_pvn_force | |
8186 | ||
8187 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
8188 | A private implementation of the C<SvPV_force> macro for compilers which |
8189 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 8190 | |
8d6d96c1 HS |
8191 | =for apidoc sv_pvn_force_flags |
8192 | ||
8193 | Get a sensible string out of the SV somehow. | |
8194 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
8195 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
8196 | implemented in terms of this function. | |
645c22ef DM |
8197 | You normally want to use the various wrapper macros instead: see |
8198 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
8199 | |
8200 | =cut | |
8201 | */ | |
8202 | ||
8203 | char * | |
8204 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
8205 | { | |
a0d0e21e | 8206 | |
6fc92669 | 8207 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 8208 | sv_force_normal_flags(sv, 0); |
1c846c1f | 8209 | |
a0d0e21e LW |
8210 | if (SvPOK(sv)) { |
8211 | *lp = SvCUR(sv); | |
8212 | } | |
8213 | else { | |
a3b680e6 | 8214 | char *s; |
748a9306 | 8215 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
cea2e8a9 | 8216 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 8217 | OP_NAME(PL_op)); |
a0d0e21e | 8218 | } |
4633a7c4 | 8219 | else |
8d6d96c1 | 8220 | s = sv_2pv_flags(sv, lp, flags); |
a0d0e21e | 8221 | if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */ |
a3b680e6 | 8222 | const STRLEN len = *lp; |
1c846c1f | 8223 | |
a0d0e21e LW |
8224 | if (SvROK(sv)) |
8225 | sv_unref(sv); | |
8226 | (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */ | |
8227 | SvGROW(sv, len + 1); | |
8228 | Move(s,SvPVX(sv),len,char); | |
8229 | SvCUR_set(sv, len); | |
8230 | *SvEND(sv) = '\0'; | |
8231 | } | |
8232 | if (!SvPOK(sv)) { | |
8233 | SvPOK_on(sv); /* validate pointer */ | |
8234 | SvTAINT(sv); | |
1d7c1841 GS |
8235 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
8236 | PTR2UV(sv),SvPVX(sv))); | |
a0d0e21e LW |
8237 | } |
8238 | } | |
8239 | return SvPVX(sv); | |
8240 | } | |
8241 | ||
09540bc3 JH |
8242 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); |
8243 | * this function provided for binary compatibility only | |
8244 | */ | |
8245 | ||
8246 | char * | |
8247 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
8248 | { | |
8249 | sv_utf8_downgrade(sv,0); | |
8250 | return sv_pv(sv); | |
8251 | } | |
8252 | ||
645c22ef DM |
8253 | /* |
8254 | =for apidoc sv_pvbyte | |
8255 | ||
baca2b92 | 8256 | Use C<SvPVbyte_nolen> instead. |
645c22ef | 8257 | |
645c22ef DM |
8258 | =for apidoc sv_pvbyten |
8259 | ||
8260 | A private implementation of the C<SvPVbyte> macro for compilers | |
8261 | which can't cope with complex macro expressions. Always use the macro | |
8262 | instead. | |
8263 | ||
8264 | =cut | |
8265 | */ | |
8266 | ||
7340a771 GS |
8267 | char * |
8268 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
8269 | { | |
ffebcc3e | 8270 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
8271 | return sv_pvn(sv,lp); |
8272 | } | |
8273 | ||
645c22ef DM |
8274 | /* |
8275 | =for apidoc sv_pvbyten_force | |
8276 | ||
8277 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
8278 | which can't cope with complex macro expressions. Always use the macro | |
8279 | instead. | |
8280 | ||
8281 | =cut | |
8282 | */ | |
8283 | ||
7340a771 GS |
8284 | char * |
8285 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
8286 | { | |
46ec2f14 | 8287 | sv_pvn_force(sv,lp); |
ffebcc3e | 8288 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
8289 | *lp = SvCUR(sv); |
8290 | return SvPVX(sv); | |
7340a771 GS |
8291 | } |
8292 | ||
09540bc3 JH |
8293 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
8294 | * this function provided for binary compatibility only | |
8295 | */ | |
8296 | ||
8297 | char * | |
8298 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
8299 | { | |
8300 | sv_utf8_upgrade(sv); | |
8301 | return sv_pv(sv); | |
8302 | } | |
8303 | ||
645c22ef DM |
8304 | /* |
8305 | =for apidoc sv_pvutf8 | |
8306 | ||
baca2b92 | 8307 | Use the C<SvPVutf8_nolen> macro instead |
645c22ef | 8308 | |
645c22ef DM |
8309 | =for apidoc sv_pvutf8n |
8310 | ||
8311 | A private implementation of the C<SvPVutf8> macro for compilers | |
8312 | which can't cope with complex macro expressions. Always use the macro | |
8313 | instead. | |
8314 | ||
8315 | =cut | |
8316 | */ | |
8317 | ||
7340a771 GS |
8318 | char * |
8319 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
8320 | { | |
560a288e | 8321 | sv_utf8_upgrade(sv); |
7340a771 GS |
8322 | return sv_pvn(sv,lp); |
8323 | } | |
8324 | ||
c461cf8f JH |
8325 | /* |
8326 | =for apidoc sv_pvutf8n_force | |
8327 | ||
645c22ef DM |
8328 | A private implementation of the C<SvPVutf8_force> macro for compilers |
8329 | which can't cope with complex macro expressions. Always use the macro | |
8330 | instead. | |
c461cf8f JH |
8331 | |
8332 | =cut | |
8333 | */ | |
8334 | ||
7340a771 GS |
8335 | char * |
8336 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
8337 | { | |
46ec2f14 | 8338 | sv_pvn_force(sv,lp); |
560a288e | 8339 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
8340 | *lp = SvCUR(sv); |
8341 | return SvPVX(sv); | |
7340a771 GS |
8342 | } |
8343 | ||
c461cf8f JH |
8344 | /* |
8345 | =for apidoc sv_reftype | |
8346 | ||
8347 | Returns a string describing what the SV is a reference to. | |
8348 | ||
8349 | =cut | |
8350 | */ | |
8351 | ||
1cb0ed9b | 8352 | char * |
bfed75c6 | 8353 | Perl_sv_reftype(pTHX_ const SV *sv, int ob) |
a0d0e21e | 8354 | { |
07409e01 NC |
8355 | /* The fact that I don't need to downcast to char * everywhere, only in ?: |
8356 | inside return suggests a const propagation bug in g++. */ | |
c86bf373 | 8357 | if (ob && SvOBJECT(sv)) { |
bfcb3514 | 8358 | char *name = HvNAME_get(SvSTASH(sv)); |
07409e01 | 8359 | return name ? name : (char *) "__ANON__"; |
c86bf373 | 8360 | } |
a0d0e21e LW |
8361 | else { |
8362 | switch (SvTYPE(sv)) { | |
8363 | case SVt_NULL: | |
8364 | case SVt_IV: | |
8365 | case SVt_NV: | |
8366 | case SVt_RV: | |
8367 | case SVt_PV: | |
8368 | case SVt_PVIV: | |
8369 | case SVt_PVNV: | |
8370 | case SVt_PVMG: | |
8371 | case SVt_PVBM: | |
1cb0ed9b | 8372 | if (SvVOK(sv)) |
439cb1c4 | 8373 | return "VSTRING"; |
a0d0e21e LW |
8374 | if (SvROK(sv)) |
8375 | return "REF"; | |
8376 | else | |
8377 | return "SCALAR"; | |
1cb0ed9b | 8378 | |
07409e01 | 8379 | case SVt_PVLV: return (char *) (SvROK(sv) ? "REF" |
be65207d DM |
8380 | /* tied lvalues should appear to be |
8381 | * scalars for backwards compatitbility */ | |
8382 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
07409e01 | 8383 | ? "SCALAR" : "LVALUE"); |
a0d0e21e LW |
8384 | case SVt_PVAV: return "ARRAY"; |
8385 | case SVt_PVHV: return "HASH"; | |
8386 | case SVt_PVCV: return "CODE"; | |
8387 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 8388 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 8389 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
8390 | default: return "UNKNOWN"; |
8391 | } | |
8392 | } | |
8393 | } | |
8394 | ||
954c1994 GS |
8395 | /* |
8396 | =for apidoc sv_isobject | |
8397 | ||
8398 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
8399 | object. If the SV is not an RV, or if the object is not blessed, then this | |
8400 | will return false. | |
8401 | ||
8402 | =cut | |
8403 | */ | |
8404 | ||
463ee0b2 | 8405 | int |
864dbfa3 | 8406 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 8407 | { |
68dc0745 | 8408 | if (!sv) |
8409 | return 0; | |
8410 | if (SvGMAGICAL(sv)) | |
8411 | mg_get(sv); | |
85e6fe83 LW |
8412 | if (!SvROK(sv)) |
8413 | return 0; | |
8414 | sv = (SV*)SvRV(sv); | |
8415 | if (!SvOBJECT(sv)) | |
8416 | return 0; | |
8417 | return 1; | |
8418 | } | |
8419 | ||
954c1994 GS |
8420 | /* |
8421 | =for apidoc sv_isa | |
8422 | ||
8423 | Returns a boolean indicating whether the SV is blessed into the specified | |
8424 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
8425 | an inheritance relationship. | |
8426 | ||
8427 | =cut | |
8428 | */ | |
8429 | ||
85e6fe83 | 8430 | int |
864dbfa3 | 8431 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 8432 | { |
bfcb3514 | 8433 | const char *hvname; |
68dc0745 | 8434 | if (!sv) |
8435 | return 0; | |
8436 | if (SvGMAGICAL(sv)) | |
8437 | mg_get(sv); | |
ed6116ce | 8438 | if (!SvROK(sv)) |
463ee0b2 | 8439 | return 0; |
ed6116ce LW |
8440 | sv = (SV*)SvRV(sv); |
8441 | if (!SvOBJECT(sv)) | |
463ee0b2 | 8442 | return 0; |
bfcb3514 NC |
8443 | hvname = HvNAME_get(SvSTASH(sv)); |
8444 | if (!hvname) | |
e27ad1f2 | 8445 | return 0; |
463ee0b2 | 8446 | |
bfcb3514 | 8447 | return strEQ(hvname, name); |
463ee0b2 LW |
8448 | } |
8449 | ||
954c1994 GS |
8450 | /* |
8451 | =for apidoc newSVrv | |
8452 | ||
8453 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
8454 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
8455 | be blessed in the specified package. The new SV is returned and its | |
8456 | reference count is 1. | |
8457 | ||
8458 | =cut | |
8459 | */ | |
8460 | ||
463ee0b2 | 8461 | SV* |
864dbfa3 | 8462 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 8463 | { |
463ee0b2 LW |
8464 | SV *sv; |
8465 | ||
4561caa4 | 8466 | new_SV(sv); |
51cf62d8 | 8467 | |
765f542d | 8468 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 8469 | SvAMAGIC_off(rv); |
51cf62d8 | 8470 | |
0199fce9 | 8471 | if (SvTYPE(rv) >= SVt_PVMG) { |
a3b680e6 | 8472 | const U32 refcnt = SvREFCNT(rv); |
0199fce9 JD |
8473 | SvREFCNT(rv) = 0; |
8474 | sv_clear(rv); | |
8475 | SvFLAGS(rv) = 0; | |
8476 | SvREFCNT(rv) = refcnt; | |
8477 | } | |
8478 | ||
51cf62d8 | 8479 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
8480 | sv_upgrade(rv, SVt_RV); |
8481 | else if (SvTYPE(rv) > SVt_RV) { | |
8bd4d4c5 | 8482 | SvPV_free(rv); |
0199fce9 JD |
8483 | SvCUR_set(rv, 0); |
8484 | SvLEN_set(rv, 0); | |
8485 | } | |
51cf62d8 | 8486 | |
0c34ef67 | 8487 | SvOK_off(rv); |
b162af07 | 8488 | SvRV_set(rv, sv); |
ed6116ce | 8489 | SvROK_on(rv); |
463ee0b2 | 8490 | |
a0d0e21e LW |
8491 | if (classname) { |
8492 | HV* stash = gv_stashpv(classname, TRUE); | |
8493 | (void)sv_bless(rv, stash); | |
8494 | } | |
8495 | return sv; | |
8496 | } | |
8497 | ||
954c1994 GS |
8498 | /* |
8499 | =for apidoc sv_setref_pv | |
8500 | ||
8501 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
8502 | argument will be upgraded to an RV. That RV will be modified to point to | |
8503 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
8504 | into the SV. The C<classname> argument indicates the package for the | |
8505 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8506 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8507 | |
8508 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
8509 | objects will become corrupted by the pointer copy process. | |
8510 | ||
8511 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
8512 | ||
8513 | =cut | |
8514 | */ | |
8515 | ||
a0d0e21e | 8516 | SV* |
864dbfa3 | 8517 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 8518 | { |
189b2af5 | 8519 | if (!pv) { |
3280af22 | 8520 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
8521 | SvSETMAGIC(rv); |
8522 | } | |
a0d0e21e | 8523 | else |
56431972 | 8524 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
8525 | return rv; |
8526 | } | |
8527 | ||
954c1994 GS |
8528 | /* |
8529 | =for apidoc sv_setref_iv | |
8530 | ||
8531 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
8532 | argument will be upgraded to an RV. That RV will be modified to point to | |
8533 | the new SV. The C<classname> argument indicates the package for the | |
8534 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8535 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8536 | |
8537 | =cut | |
8538 | */ | |
8539 | ||
a0d0e21e | 8540 | SV* |
864dbfa3 | 8541 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
8542 | { |
8543 | sv_setiv(newSVrv(rv,classname), iv); | |
8544 | return rv; | |
8545 | } | |
8546 | ||
954c1994 | 8547 | /* |
e1c57cef JH |
8548 | =for apidoc sv_setref_uv |
8549 | ||
8550 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
8551 | argument will be upgraded to an RV. That RV will be modified to point to | |
8552 | the new SV. The C<classname> argument indicates the package for the | |
8553 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8554 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
8555 | |
8556 | =cut | |
8557 | */ | |
8558 | ||
8559 | SV* | |
8560 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
8561 | { | |
8562 | sv_setuv(newSVrv(rv,classname), uv); | |
8563 | return rv; | |
8564 | } | |
8565 | ||
8566 | /* | |
954c1994 GS |
8567 | =for apidoc sv_setref_nv |
8568 | ||
8569 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
8570 | argument will be upgraded to an RV. That RV will be modified to point to | |
8571 | the new SV. The C<classname> argument indicates the package for the | |
8572 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8573 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8574 | |
8575 | =cut | |
8576 | */ | |
8577 | ||
a0d0e21e | 8578 | SV* |
65202027 | 8579 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
8580 | { |
8581 | sv_setnv(newSVrv(rv,classname), nv); | |
8582 | return rv; | |
8583 | } | |
463ee0b2 | 8584 | |
954c1994 GS |
8585 | /* |
8586 | =for apidoc sv_setref_pvn | |
8587 | ||
8588 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
8589 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
8590 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
8591 | argument indicates the package for the blessing. Set C<classname> to | |
7a5fa8a2 | 8592 | C<Nullch> to avoid the blessing. The new SV will have a reference count |
d34c2299 | 8593 | of 1, and the RV will be returned. |
954c1994 GS |
8594 | |
8595 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
8596 | ||
8597 | =cut | |
8598 | */ | |
8599 | ||
a0d0e21e | 8600 | SV* |
864dbfa3 | 8601 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n) |
a0d0e21e LW |
8602 | { |
8603 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
8604 | return rv; |
8605 | } | |
8606 | ||
954c1994 GS |
8607 | /* |
8608 | =for apidoc sv_bless | |
8609 | ||
8610 | Blesses an SV into a specified package. The SV must be an RV. The package | |
8611 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
8612 | of the SV is unaffected. | |
8613 | ||
8614 | =cut | |
8615 | */ | |
8616 | ||
a0d0e21e | 8617 | SV* |
864dbfa3 | 8618 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 8619 | { |
76e3520e | 8620 | SV *tmpRef; |
a0d0e21e | 8621 | if (!SvROK(sv)) |
cea2e8a9 | 8622 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
8623 | tmpRef = SvRV(sv); |
8624 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
8625 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 8626 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
8627 | if (SvOBJECT(tmpRef)) { |
8628 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8629 | --PL_sv_objcount; |
76e3520e | 8630 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 8631 | } |
a0d0e21e | 8632 | } |
76e3520e GS |
8633 | SvOBJECT_on(tmpRef); |
8634 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8635 | ++PL_sv_objcount; |
76e3520e | 8636 | (void)SvUPGRADE(tmpRef, SVt_PVMG); |
b162af07 | 8637 | SvSTASH_set(tmpRef, (HV*)SvREFCNT_inc(stash)); |
a0d0e21e | 8638 | |
2e3febc6 CS |
8639 | if (Gv_AMG(stash)) |
8640 | SvAMAGIC_on(sv); | |
8641 | else | |
8642 | SvAMAGIC_off(sv); | |
a0d0e21e | 8643 | |
1edbfb88 AB |
8644 | if(SvSMAGICAL(tmpRef)) |
8645 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
8646 | mg_set(tmpRef); | |
8647 | ||
8648 | ||
ecdeb87c | 8649 | |
a0d0e21e LW |
8650 | return sv; |
8651 | } | |
8652 | ||
645c22ef | 8653 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
8654 | */ |
8655 | ||
76e3520e | 8656 | STATIC void |
cea2e8a9 | 8657 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 8658 | { |
850fabdf GS |
8659 | void *xpvmg; |
8660 | ||
a0d0e21e LW |
8661 | assert(SvTYPE(sv) == SVt_PVGV); |
8662 | SvFAKE_off(sv); | |
8663 | if (GvGP(sv)) | |
1edc1566 | 8664 | gp_free((GV*)sv); |
e826b3c7 GS |
8665 | if (GvSTASH(sv)) { |
8666 | SvREFCNT_dec(GvSTASH(sv)); | |
8667 | GvSTASH(sv) = Nullhv; | |
8668 | } | |
14befaf4 | 8669 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8670 | Safefree(GvNAME(sv)); |
a5f75d66 | 8671 | GvMULTI_off(sv); |
850fabdf GS |
8672 | |
8673 | /* need to keep SvANY(sv) in the right arena */ | |
8674 | xpvmg = new_XPVMG(); | |
8675 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8676 | del_XPVGV(SvANY(sv)); | |
8677 | SvANY(sv) = xpvmg; | |
8678 | ||
a0d0e21e LW |
8679 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8680 | SvFLAGS(sv) |= SVt_PVMG; | |
8681 | } | |
8682 | ||
954c1994 | 8683 | /* |
840a7b70 | 8684 | =for apidoc sv_unref_flags |
954c1994 GS |
8685 | |
8686 | Unsets the RV status of the SV, and decrements the reference count of | |
8687 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8688 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8689 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8690 | (otherwise the decrementing is conditional on the reference count being | |
8691 | different from one or the reference being a readonly SV). | |
7889fe52 | 8692 | See C<SvROK_off>. |
954c1994 GS |
8693 | |
8694 | =cut | |
8695 | */ | |
8696 | ||
ed6116ce | 8697 | void |
840a7b70 | 8698 | Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags) |
ed6116ce | 8699 | { |
a0d0e21e | 8700 | SV* rv = SvRV(sv); |
810b8aa5 GS |
8701 | |
8702 | if (SvWEAKREF(sv)) { | |
8703 | sv_del_backref(sv); | |
8704 | SvWEAKREF_off(sv); | |
b162af07 | 8705 | SvRV_set(sv, NULL); |
810b8aa5 GS |
8706 | return; |
8707 | } | |
b162af07 | 8708 | SvRV_set(sv, NULL); |
ed6116ce | 8709 | SvROK_off(sv); |
04ca4930 NC |
8710 | /* You can't have a || SvREADONLY(rv) here, as $a = $$a, where $a was |
8711 | assigned to as BEGIN {$a = \"Foo"} will fail. */ | |
8712 | if (SvREFCNT(rv) != 1 || (flags & SV_IMMEDIATE_UNREF)) | |
4633a7c4 | 8713 | SvREFCNT_dec(rv); |
840a7b70 | 8714 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
4633a7c4 | 8715 | sv_2mortal(rv); /* Schedule for freeing later */ |
ed6116ce | 8716 | } |
8990e307 | 8717 | |
840a7b70 IZ |
8718 | /* |
8719 | =for apidoc sv_unref | |
8720 | ||
8721 | Unsets the RV status of the SV, and decrements the reference count of | |
8722 | whatever was being referenced by the RV. This can almost be thought of | |
8723 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
7889fe52 | 8724 | being zero. See C<SvROK_off>. |
840a7b70 IZ |
8725 | |
8726 | =cut | |
8727 | */ | |
8728 | ||
8729 | void | |
8730 | Perl_sv_unref(pTHX_ SV *sv) | |
8731 | { | |
8732 | sv_unref_flags(sv, 0); | |
8733 | } | |
8734 | ||
645c22ef DM |
8735 | /* |
8736 | =for apidoc sv_taint | |
8737 | ||
8738 | Taint an SV. Use C<SvTAINTED_on> instead. | |
8739 | =cut | |
8740 | */ | |
8741 | ||
bbce6d69 | 8742 | void |
864dbfa3 | 8743 | Perl_sv_taint(pTHX_ SV *sv) |
bbce6d69 | 8744 | { |
14befaf4 | 8745 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); |
bbce6d69 | 8746 | } |
8747 | ||
645c22ef DM |
8748 | /* |
8749 | =for apidoc sv_untaint | |
8750 | ||
8751 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8752 | =cut | |
8753 | */ | |
8754 | ||
bbce6d69 | 8755 | void |
864dbfa3 | 8756 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8757 | { |
13f57bf8 | 8758 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8759 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8760 | if (mg) |
565764a8 | 8761 | mg->mg_len &= ~1; |
36477c24 | 8762 | } |
bbce6d69 | 8763 | } |
8764 | ||
645c22ef DM |
8765 | /* |
8766 | =for apidoc sv_tainted | |
8767 | ||
8768 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8769 | =cut | |
8770 | */ | |
8771 | ||
bbce6d69 | 8772 | bool |
864dbfa3 | 8773 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8774 | { |
13f57bf8 | 8775 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8776 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
155aba94 | 8777 | if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv))) |
36477c24 | 8778 | return TRUE; |
8779 | } | |
8780 | return FALSE; | |
bbce6d69 | 8781 | } |
8782 | ||
09540bc3 JH |
8783 | /* |
8784 | =for apidoc sv_setpviv | |
8785 | ||
8786 | Copies an integer into the given SV, also updating its string value. | |
8787 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8788 | ||
8789 | =cut | |
8790 | */ | |
8791 | ||
8792 | void | |
8793 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8794 | { | |
8795 | char buf[TYPE_CHARS(UV)]; | |
8796 | char *ebuf; | |
8797 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8798 | ||
8799 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8800 | } | |
8801 | ||
8802 | /* | |
8803 | =for apidoc sv_setpviv_mg | |
8804 | ||
8805 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8806 | ||
8807 | =cut | |
8808 | */ | |
8809 | ||
8810 | void | |
8811 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8812 | { | |
8813 | char buf[TYPE_CHARS(UV)]; | |
8814 | char *ebuf; | |
8815 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8816 | ||
8817 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8818 | SvSETMAGIC(sv); | |
8819 | } | |
8820 | ||
cea2e8a9 | 8821 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8822 | |
8823 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8824 | * version of the main function, (which may itself be aliased to us). | |
8825 | * Don't access this version directly. | |
8826 | */ | |
8827 | ||
cea2e8a9 GS |
8828 | void |
8829 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8830 | { | |
8831 | dTHX; | |
8832 | va_list args; | |
8833 | va_start(args, pat); | |
c5be433b | 8834 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8835 | va_end(args); |
8836 | } | |
8837 | ||
645c22ef DM |
8838 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8839 | * version of the main function, (which may itself be aliased to us). | |
8840 | * Don't access this version directly. | |
8841 | */ | |
cea2e8a9 GS |
8842 | |
8843 | void | |
8844 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8845 | { | |
8846 | dTHX; | |
8847 | va_list args; | |
8848 | va_start(args, pat); | |
c5be433b | 8849 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8850 | va_end(args); |
cea2e8a9 GS |
8851 | } |
8852 | #endif | |
8853 | ||
954c1994 GS |
8854 | /* |
8855 | =for apidoc sv_setpvf | |
8856 | ||
bffc3d17 SH |
8857 | Works like C<sv_catpvf> but copies the text into the SV instead of |
8858 | appending it. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
954c1994 GS |
8859 | |
8860 | =cut | |
8861 | */ | |
8862 | ||
46fc3d4c | 8863 | void |
864dbfa3 | 8864 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8865 | { |
8866 | va_list args; | |
46fc3d4c | 8867 | va_start(args, pat); |
c5be433b | 8868 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8869 | va_end(args); |
8870 | } | |
8871 | ||
bffc3d17 SH |
8872 | /* |
8873 | =for apidoc sv_vsetpvf | |
8874 | ||
8875 | Works like C<sv_vcatpvf> but copies the text into the SV instead of | |
8876 | appending it. Does not handle 'set' magic. See C<sv_vsetpvf_mg>. | |
8877 | ||
8878 | Usually used via its frontend C<sv_setpvf>. | |
8879 | ||
8880 | =cut | |
8881 | */ | |
645c22ef | 8882 | |
c5be433b GS |
8883 | void |
8884 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8885 | { | |
8886 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8887 | } | |
ef50df4b | 8888 | |
954c1994 GS |
8889 | /* |
8890 | =for apidoc sv_setpvf_mg | |
8891 | ||
8892 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8893 | ||
8894 | =cut | |
8895 | */ | |
8896 | ||
ef50df4b | 8897 | void |
864dbfa3 | 8898 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8899 | { |
8900 | va_list args; | |
ef50df4b | 8901 | va_start(args, pat); |
c5be433b | 8902 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8903 | va_end(args); |
c5be433b GS |
8904 | } |
8905 | ||
bffc3d17 SH |
8906 | /* |
8907 | =for apidoc sv_vsetpvf_mg | |
8908 | ||
8909 | Like C<sv_vsetpvf>, but also handles 'set' magic. | |
8910 | ||
8911 | Usually used via its frontend C<sv_setpvf_mg>. | |
8912 | ||
8913 | =cut | |
8914 | */ | |
645c22ef | 8915 | |
c5be433b GS |
8916 | void |
8917 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8918 | { | |
8919 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8920 | SvSETMAGIC(sv); |
8921 | } | |
8922 | ||
cea2e8a9 | 8923 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8924 | |
8925 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8926 | * version of the main function, (which may itself be aliased to us). | |
8927 | * Don't access this version directly. | |
8928 | */ | |
8929 | ||
cea2e8a9 GS |
8930 | void |
8931 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
8932 | { | |
8933 | dTHX; | |
8934 | va_list args; | |
8935 | va_start(args, pat); | |
c5be433b | 8936 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
8937 | va_end(args); |
8938 | } | |
8939 | ||
645c22ef DM |
8940 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8941 | * version of the main function, (which may itself be aliased to us). | |
8942 | * Don't access this version directly. | |
8943 | */ | |
8944 | ||
cea2e8a9 GS |
8945 | void |
8946 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8947 | { | |
8948 | dTHX; | |
8949 | va_list args; | |
8950 | va_start(args, pat); | |
c5be433b | 8951 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 8952 | va_end(args); |
cea2e8a9 GS |
8953 | } |
8954 | #endif | |
8955 | ||
954c1994 GS |
8956 | /* |
8957 | =for apidoc sv_catpvf | |
8958 | ||
d5ce4a7c GA |
8959 | Processes its arguments like C<sprintf> and appends the formatted |
8960 | output to an SV. If the appended data contains "wide" characters | |
8961 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
8962 | and characters >255 formatted with %c), the original SV might get | |
bffc3d17 | 8963 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. See |
cdd94ca7 NC |
8964 | C<sv_catpvf_mg>. If the original SV was UTF-8, the pattern should be |
8965 | valid UTF-8; if the original SV was bytes, the pattern should be too. | |
954c1994 | 8966 | |
d5ce4a7c | 8967 | =cut */ |
954c1994 | 8968 | |
46fc3d4c | 8969 | void |
864dbfa3 | 8970 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8971 | { |
8972 | va_list args; | |
46fc3d4c | 8973 | va_start(args, pat); |
c5be433b | 8974 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 8975 | va_end(args); |
8976 | } | |
8977 | ||
bffc3d17 SH |
8978 | /* |
8979 | =for apidoc sv_vcatpvf | |
8980 | ||
8981 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8982 | to an SV. Does not handle 'set' magic. See C<sv_vcatpvf_mg>. | |
8983 | ||
8984 | Usually used via its frontend C<sv_catpvf>. | |
8985 | ||
8986 | =cut | |
8987 | */ | |
645c22ef | 8988 | |
ef50df4b | 8989 | void |
c5be433b GS |
8990 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
8991 | { | |
8992 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8993 | } | |
8994 | ||
954c1994 GS |
8995 | /* |
8996 | =for apidoc sv_catpvf_mg | |
8997 | ||
8998 | Like C<sv_catpvf>, but also handles 'set' magic. | |
8999 | ||
9000 | =cut | |
9001 | */ | |
9002 | ||
c5be433b | 9003 | void |
864dbfa3 | 9004 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
9005 | { |
9006 | va_list args; | |
ef50df4b | 9007 | va_start(args, pat); |
c5be433b | 9008 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 9009 | va_end(args); |
c5be433b GS |
9010 | } |
9011 | ||
bffc3d17 SH |
9012 | /* |
9013 | =for apidoc sv_vcatpvf_mg | |
9014 | ||
9015 | Like C<sv_vcatpvf>, but also handles 'set' magic. | |
9016 | ||
9017 | Usually used via its frontend C<sv_catpvf_mg>. | |
9018 | ||
9019 | =cut | |
9020 | */ | |
645c22ef | 9021 | |
c5be433b GS |
9022 | void |
9023 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
9024 | { | |
9025 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
9026 | SvSETMAGIC(sv); |
9027 | } | |
9028 | ||
954c1994 GS |
9029 | /* |
9030 | =for apidoc sv_vsetpvfn | |
9031 | ||
bffc3d17 | 9032 | Works like C<sv_vcatpvfn> but copies the text into the SV instead of |
954c1994 GS |
9033 | appending it. |
9034 | ||
bffc3d17 | 9035 | Usually used via one of its frontends C<sv_vsetpvf> and C<sv_vsetpvf_mg>. |
645c22ef | 9036 | |
954c1994 GS |
9037 | =cut |
9038 | */ | |
9039 | ||
46fc3d4c | 9040 | void |
7d5ea4e7 | 9041 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9042 | { |
9043 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 9044 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 9045 | } |
9046 | ||
645c22ef DM |
9047 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
9048 | ||
2d00ba3b | 9049 | STATIC I32 |
9dd79c3f | 9050 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
9051 | { |
9052 | I32 var = 0; | |
9053 | switch (**pattern) { | |
9054 | case '1': case '2': case '3': | |
9055 | case '4': case '5': case '6': | |
9056 | case '7': case '8': case '9': | |
9057 | while (isDIGIT(**pattern)) | |
9058 | var = var * 10 + (*(*pattern)++ - '0'); | |
9059 | } | |
9060 | return var; | |
9061 | } | |
9dd79c3f | 9062 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 9063 | |
4151a5fe IZ |
9064 | static char * |
9065 | F0convert(NV nv, char *endbuf, STRLEN *len) | |
9066 | { | |
a3b680e6 | 9067 | const int neg = nv < 0; |
4151a5fe IZ |
9068 | UV uv; |
9069 | char *p = endbuf; | |
9070 | ||
9071 | if (neg) | |
9072 | nv = -nv; | |
9073 | if (nv < UV_MAX) { | |
9074 | nv += 0.5; | |
028f8eaa | 9075 | uv = (UV)nv; |
4151a5fe IZ |
9076 | if (uv & 1 && uv == nv) |
9077 | uv--; /* Round to even */ | |
9078 | do { | |
a3b680e6 | 9079 | const unsigned dig = uv % 10; |
4151a5fe IZ |
9080 | *--p = '0' + dig; |
9081 | } while (uv /= 10); | |
9082 | if (neg) | |
9083 | *--p = '-'; | |
9084 | *len = endbuf - p; | |
9085 | return p; | |
9086 | } | |
9087 | return Nullch; | |
9088 | } | |
9089 | ||
9090 | ||
954c1994 GS |
9091 | /* |
9092 | =for apidoc sv_vcatpvfn | |
9093 | ||
9094 | Processes its arguments like C<vsprintf> and appends the formatted output | |
9095 | to an SV. Uses an array of SVs if the C style variable argument list is | |
9096 | missing (NULL). When running with taint checks enabled, indicates via | |
9097 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
9098 | locales). | |
9099 | ||
bffc3d17 | 9100 | Usually used via one of its frontends C<sv_vcatpvf> and C<sv_vcatpvf_mg>. |
645c22ef | 9101 | |
954c1994 GS |
9102 | =cut |
9103 | */ | |
9104 | ||
1ef29b0e RGS |
9105 | /* XXX maybe_tainted is never assigned to, so the doc above is lying. */ |
9106 | ||
46fc3d4c | 9107 | void |
7d5ea4e7 | 9108 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9109 | { |
9110 | char *p; | |
9111 | char *q; | |
a3b680e6 | 9112 | const char *patend; |
fc36a67e | 9113 | STRLEN origlen; |
46fc3d4c | 9114 | I32 svix = 0; |
27da23d5 | 9115 | static const char nullstr[] = "(null)"; |
9c5ffd7c | 9116 | SV *argsv = Nullsv; |
db79b45b JH |
9117 | bool has_utf8; /* has the result utf8? */ |
9118 | bool pat_utf8; /* the pattern is in utf8? */ | |
9119 | SV *nsv = Nullsv; | |
4151a5fe IZ |
9120 | /* Times 4: a decimal digit takes more than 3 binary digits. |
9121 | * NV_DIG: mantissa takes than many decimal digits. | |
9122 | * Plus 32: Playing safe. */ | |
9123 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
9124 | /* large enough for "%#.#f" --chip */ | |
9125 | /* what about long double NVs? --jhi */ | |
db79b45b JH |
9126 | |
9127 | has_utf8 = pat_utf8 = DO_UTF8(sv); | |
46fc3d4c | 9128 | |
9129 | /* no matter what, this is a string now */ | |
fc36a67e | 9130 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 9131 | |
0dbb1585 | 9132 | /* special-case "", "%s", and "%-p" (SVf) */ |
46fc3d4c | 9133 | if (patlen == 0) |
9134 | return; | |
0dbb1585 | 9135 | if (patlen == 2 && pat[0] == '%' && pat[1] == 's') { |
c635e13b | 9136 | if (args) { |
73d840c0 | 9137 | const char *s = va_arg(*args, char*); |
c635e13b | 9138 | sv_catpv(sv, s ? s : nullstr); |
9139 | } | |
7e2040f0 | 9140 | else if (svix < svmax) { |
fc36a67e | 9141 | sv_catsv(sv, *svargs); |
7e2040f0 GS |
9142 | if (DO_UTF8(*svargs)) |
9143 | SvUTF8_on(sv); | |
9144 | } | |
fc36a67e | 9145 | return; |
0dbb1585 AL |
9146 | } |
9147 | if (patlen == 3 && pat[0] == '%' && | |
9148 | pat[1] == '-' && pat[2] == 'p') { | |
fc36a67e | 9149 | if (args) { |
7e2040f0 GS |
9150 | argsv = va_arg(*args, SV*); |
9151 | sv_catsv(sv, argsv); | |
9152 | if (DO_UTF8(argsv)) | |
9153 | SvUTF8_on(sv); | |
fc36a67e | 9154 | return; |
9155 | } | |
46fc3d4c | 9156 | } |
9157 | ||
1d917b39 | 9158 | #ifndef USE_LONG_DOUBLE |
4151a5fe IZ |
9159 | /* special-case "%.<number>[gf]" */ |
9160 | if ( patlen <= 5 && pat[0] == '%' && pat[1] == '.' | |
9161 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { | |
9162 | unsigned digits = 0; | |
9163 | const char *pp; | |
9164 | ||
9165 | pp = pat + 2; | |
9166 | while (*pp >= '0' && *pp <= '9') | |
9167 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 9168 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
9169 | NV nv; |
9170 | ||
9171 | if (args) | |
9172 | nv = (NV)va_arg(*args, double); | |
9173 | else if (svix < svmax) | |
9174 | nv = SvNV(*svargs); | |
9175 | else | |
9176 | return; | |
9177 | if (*pp == 'g') { | |
2873255c NC |
9178 | /* Add check for digits != 0 because it seems that some |
9179 | gconverts are buggy in this case, and we don't yet have | |
9180 | a Configure test for this. */ | |
9181 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
9182 | /* 0, point, slack */ | |
2e59c212 | 9183 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
9184 | sv_catpv(sv, ebuf); |
9185 | if (*ebuf) /* May return an empty string for digits==0 */ | |
9186 | return; | |
9187 | } | |
9188 | } else if (!digits) { | |
9189 | STRLEN l; | |
9190 | ||
9191 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
9192 | sv_catpvn(sv, p, l); | |
9193 | return; | |
9194 | } | |
9195 | } | |
9196 | } | |
9197 | } | |
1d917b39 | 9198 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 9199 | |
2cf2cfc6 | 9200 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 9201 | has_utf8 = TRUE; |
2cf2cfc6 | 9202 | |
46fc3d4c | 9203 | patend = (char*)pat + patlen; |
9204 | for (p = (char*)pat; p < patend; p = q) { | |
9205 | bool alt = FALSE; | |
9206 | bool left = FALSE; | |
b22c7a20 | 9207 | bool vectorize = FALSE; |
211dfcf1 | 9208 | bool vectorarg = FALSE; |
2cf2cfc6 | 9209 | bool vec_utf8 = FALSE; |
46fc3d4c | 9210 | char fill = ' '; |
9211 | char plus = 0; | |
9212 | char intsize = 0; | |
9213 | STRLEN width = 0; | |
fc36a67e | 9214 | STRLEN zeros = 0; |
46fc3d4c | 9215 | bool has_precis = FALSE; |
9216 | STRLEN precis = 0; | |
58e33a90 | 9217 | I32 osvix = svix; |
2cf2cfc6 | 9218 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
9219 | #ifdef HAS_LDBL_SPRINTF_BUG |
9220 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 9221 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
9222 | bool fix_ldbl_sprintf_bug = FALSE; |
9223 | #endif | |
205f51d8 | 9224 | |
46fc3d4c | 9225 | char esignbuf[4]; |
89ebb4a3 | 9226 | U8 utf8buf[UTF8_MAXBYTES+1]; |
46fc3d4c | 9227 | STRLEN esignlen = 0; |
9228 | ||
9229 | char *eptr = Nullch; | |
fc36a67e | 9230 | STRLEN elen = 0; |
81f715da | 9231 | SV *vecsv = Nullsv; |
a05b299f | 9232 | U8 *vecstr = Null(U8*); |
b22c7a20 | 9233 | STRLEN veclen = 0; |
934abaf1 | 9234 | char c = 0; |
46fc3d4c | 9235 | int i; |
9c5ffd7c | 9236 | unsigned base = 0; |
8c8eb53c RB |
9237 | IV iv = 0; |
9238 | UV uv = 0; | |
9e5b023a JH |
9239 | /* we need a long double target in case HAS_LONG_DOUBLE but |
9240 | not USE_LONG_DOUBLE | |
9241 | */ | |
35fff930 | 9242 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
9243 | long double nv; |
9244 | #else | |
65202027 | 9245 | NV nv; |
9e5b023a | 9246 | #endif |
46fc3d4c | 9247 | STRLEN have; |
9248 | STRLEN need; | |
9249 | STRLEN gap; | |
e1ec3a88 | 9250 | const char *dotstr = "."; |
b22c7a20 | 9251 | STRLEN dotstrlen = 1; |
211dfcf1 | 9252 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 9253 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
9254 | I32 epix = 0; /* explicit precision index */ |
9255 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 9256 | bool asterisk = FALSE; |
46fc3d4c | 9257 | |
211dfcf1 | 9258 | /* echo everything up to the next format specification */ |
46fc3d4c | 9259 | for (q = p; q < patend && *q != '%'; ++q) ; |
9260 | if (q > p) { | |
db79b45b JH |
9261 | if (has_utf8 && !pat_utf8) |
9262 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
9263 | else | |
9264 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 9265 | p = q; |
9266 | } | |
9267 | if (q++ >= patend) | |
9268 | break; | |
9269 | ||
211dfcf1 HS |
9270 | /* |
9271 | We allow format specification elements in this order: | |
9272 | \d+\$ explicit format parameter index | |
9273 | [-+ 0#]+ flags | |
a472f209 | 9274 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 9275 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
9276 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
9277 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
9278 | [hlqLV] size | |
9279 | [%bcdefginopsux_DFOUX] format (mandatory) | |
9280 | */ | |
9281 | if (EXPECT_NUMBER(q, width)) { | |
9282 | if (*q == '$') { | |
9283 | ++q; | |
9284 | efix = width; | |
9285 | } else { | |
9286 | goto gotwidth; | |
9287 | } | |
9288 | } | |
9289 | ||
fc36a67e | 9290 | /* FLAGS */ |
9291 | ||
46fc3d4c | 9292 | while (*q) { |
9293 | switch (*q) { | |
9294 | case ' ': | |
9295 | case '+': | |
9296 | plus = *q++; | |
9297 | continue; | |
9298 | ||
9299 | case '-': | |
9300 | left = TRUE; | |
9301 | q++; | |
9302 | continue; | |
9303 | ||
9304 | case '0': | |
9305 | fill = *q++; | |
9306 | continue; | |
9307 | ||
9308 | case '#': | |
9309 | alt = TRUE; | |
9310 | q++; | |
9311 | continue; | |
9312 | ||
fc36a67e | 9313 | default: |
9314 | break; | |
9315 | } | |
9316 | break; | |
9317 | } | |
46fc3d4c | 9318 | |
211dfcf1 | 9319 | tryasterisk: |
eb3fce90 | 9320 | if (*q == '*') { |
211dfcf1 HS |
9321 | q++; |
9322 | if (EXPECT_NUMBER(q, ewix)) | |
9323 | if (*q++ != '$') | |
9324 | goto unknown; | |
eb3fce90 | 9325 | asterisk = TRUE; |
211dfcf1 HS |
9326 | } |
9327 | if (*q == 'v') { | |
eb3fce90 | 9328 | q++; |
211dfcf1 HS |
9329 | if (vectorize) |
9330 | goto unknown; | |
9cbac4c7 | 9331 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
9332 | evix = ewix; |
9333 | ewix = 0; | |
9334 | asterisk = FALSE; | |
9335 | } | |
9336 | vectorize = TRUE; | |
9337 | goto tryasterisk; | |
eb3fce90 JH |
9338 | } |
9339 | ||
211dfcf1 | 9340 | if (!asterisk) |
7a5fa8a2 | 9341 | if( *q == '0' ) |
f3583277 | 9342 | fill = *q++; |
211dfcf1 HS |
9343 | EXPECT_NUMBER(q, width); |
9344 | ||
9345 | if (vectorize) { | |
9346 | if (vectorarg) { | |
9347 | if (args) | |
9348 | vecsv = va_arg(*args, SV*); | |
9349 | else | |
9350 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
3a7a539e | 9351 | svargs[evix ? evix-1 : svix++] : &PL_sv_undef; |
4459522c | 9352 | dotstr = SvPVx(vecsv, dotstrlen); |
211dfcf1 | 9353 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 9354 | is_utf8 = TRUE; |
211dfcf1 HS |
9355 | } |
9356 | if (args) { | |
9357 | vecsv = va_arg(*args, SV*); | |
9358 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9359 | vec_utf8 = DO_UTF8(vecsv); |
eb3fce90 | 9360 | } |
211dfcf1 HS |
9361 | else if (efix ? efix <= svmax : svix < svmax) { |
9362 | vecsv = svargs[efix ? efix-1 : svix++]; | |
9363 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9364 | vec_utf8 = DO_UTF8(vecsv); |
d7aa5382 JP |
9365 | /* if this is a version object, we need to return the |
9366 | * stringified representation (which the SvPVX has | |
9367 | * already done for us), but not vectorize the args | |
9368 | */ | |
9369 | if ( *q == 'd' && sv_derived_from(vecsv,"version") ) | |
9370 | { | |
9371 | q++; /* skip past the rest of the %vd format */ | |
da6068d9 | 9372 | eptr = (char *) vecstr; |
d7aa5382 JP |
9373 | elen = strlen(eptr); |
9374 | vectorize=FALSE; | |
9375 | goto string; | |
9376 | } | |
211dfcf1 HS |
9377 | } |
9378 | else { | |
9379 | vecstr = (U8*)""; | |
9380 | veclen = 0; | |
9381 | } | |
eb3fce90 | 9382 | } |
fc36a67e | 9383 | |
eb3fce90 | 9384 | if (asterisk) { |
fc36a67e | 9385 | if (args) |
9386 | i = va_arg(*args, int); | |
9387 | else | |
eb3fce90 JH |
9388 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
9389 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9390 | left |= (i < 0); |
9391 | width = (i < 0) ? -i : i; | |
fc36a67e | 9392 | } |
211dfcf1 | 9393 | gotwidth: |
fc36a67e | 9394 | |
9395 | /* PRECISION */ | |
46fc3d4c | 9396 | |
fc36a67e | 9397 | if (*q == '.') { |
9398 | q++; | |
9399 | if (*q == '*') { | |
211dfcf1 | 9400 | q++; |
7b8dd722 HS |
9401 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
9402 | goto unknown; | |
9403 | /* XXX: todo, support specified precision parameter */ | |
9404 | if (epix) | |
211dfcf1 | 9405 | goto unknown; |
46fc3d4c | 9406 | if (args) |
9407 | i = va_arg(*args, int); | |
9408 | else | |
eb3fce90 JH |
9409 | i = (ewix ? ewix <= svmax : svix < svmax) |
9410 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9411 | precis = (i < 0) ? 0 : i; |
fc36a67e | 9412 | } |
9413 | else { | |
9414 | precis = 0; | |
9415 | while (isDIGIT(*q)) | |
9416 | precis = precis * 10 + (*q++ - '0'); | |
9417 | } | |
9418 | has_precis = TRUE; | |
9419 | } | |
46fc3d4c | 9420 | |
fc36a67e | 9421 | /* SIZE */ |
46fc3d4c | 9422 | |
fc36a67e | 9423 | switch (*q) { |
c623ac67 GS |
9424 | #ifdef WIN32 |
9425 | case 'I': /* Ix, I32x, and I64x */ | |
9426 | # ifdef WIN64 | |
9427 | if (q[1] == '6' && q[2] == '4') { | |
9428 | q += 3; | |
9429 | intsize = 'q'; | |
9430 | break; | |
9431 | } | |
9432 | # endif | |
9433 | if (q[1] == '3' && q[2] == '2') { | |
9434 | q += 3; | |
9435 | break; | |
9436 | } | |
9437 | # ifdef WIN64 | |
9438 | intsize = 'q'; | |
9439 | # endif | |
9440 | q++; | |
9441 | break; | |
9442 | #endif | |
9e5b023a | 9443 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 9444 | case 'L': /* Ld */ |
e5c81feb | 9445 | /* FALL THROUGH */ |
e5c81feb | 9446 | #ifdef HAS_QUAD |
6f9bb7fd | 9447 | case 'q': /* qd */ |
9e5b023a | 9448 | #endif |
6f9bb7fd GS |
9449 | intsize = 'q'; |
9450 | q++; | |
9451 | break; | |
9452 | #endif | |
fc36a67e | 9453 | case 'l': |
9e5b023a | 9454 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 9455 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 9456 | intsize = 'q'; |
9457 | q += 2; | |
46fc3d4c | 9458 | break; |
cf2093f6 | 9459 | } |
fc36a67e | 9460 | #endif |
6f9bb7fd | 9461 | /* FALL THROUGH */ |
fc36a67e | 9462 | case 'h': |
cf2093f6 | 9463 | /* FALL THROUGH */ |
fc36a67e | 9464 | case 'V': |
9465 | intsize = *q++; | |
46fc3d4c | 9466 | break; |
9467 | } | |
9468 | ||
fc36a67e | 9469 | /* CONVERSION */ |
9470 | ||
211dfcf1 HS |
9471 | if (*q == '%') { |
9472 | eptr = q++; | |
9473 | elen = 1; | |
9474 | goto string; | |
9475 | } | |
9476 | ||
be75b157 HS |
9477 | if (vectorize) |
9478 | argsv = vecsv; | |
9479 | else if (!args) | |
211dfcf1 HS |
9480 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
9481 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
9482 | ||
46fc3d4c | 9483 | switch (c = *q++) { |
9484 | ||
9485 | /* STRINGS */ | |
9486 | ||
46fc3d4c | 9487 | case 'c': |
be75b157 | 9488 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
9489 | if ((uv > 255 || |
9490 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 9491 | && !IN_BYTES) { |
dfe13c55 | 9492 | eptr = (char*)utf8buf; |
9041c2e3 | 9493 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 9494 | is_utf8 = TRUE; |
7e2040f0 GS |
9495 | } |
9496 | else { | |
9497 | c = (char)uv; | |
9498 | eptr = &c; | |
9499 | elen = 1; | |
a0ed51b3 | 9500 | } |
46fc3d4c | 9501 | goto string; |
9502 | ||
46fc3d4c | 9503 | case 's': |
be75b157 | 9504 | if (args && !vectorize) { |
fc36a67e | 9505 | eptr = va_arg(*args, char*); |
c635e13b | 9506 | if (eptr) |
1d7c1841 GS |
9507 | #ifdef MACOS_TRADITIONAL |
9508 | /* On MacOS, %#s format is used for Pascal strings */ | |
9509 | if (alt) | |
9510 | elen = *eptr++; | |
9511 | else | |
9512 | #endif | |
c635e13b | 9513 | elen = strlen(eptr); |
9514 | else { | |
27da23d5 | 9515 | eptr = (char *)nullstr; |
c635e13b | 9516 | elen = sizeof nullstr - 1; |
9517 | } | |
46fc3d4c | 9518 | } |
211dfcf1 | 9519 | else { |
7e2040f0 GS |
9520 | eptr = SvPVx(argsv, elen); |
9521 | if (DO_UTF8(argsv)) { | |
a0ed51b3 LW |
9522 | if (has_precis && precis < elen) { |
9523 | I32 p = precis; | |
7e2040f0 | 9524 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
9525 | precis = p; |
9526 | } | |
9527 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 9528 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 9529 | } |
2cf2cfc6 | 9530 | is_utf8 = TRUE; |
a0ed51b3 LW |
9531 | } |
9532 | } | |
fc36a67e | 9533 | |
46fc3d4c | 9534 | string: |
b22c7a20 | 9535 | vectorize = FALSE; |
46fc3d4c | 9536 | if (has_precis && elen > precis) |
9537 | elen = precis; | |
9538 | break; | |
9539 | ||
9540 | /* INTEGERS */ | |
9541 | ||
fc36a67e | 9542 | case 'p': |
0dbb1585 | 9543 | if (left && args) { /* SVf */ |
5df617be | 9544 | left = FALSE; |
0dbb1585 AL |
9545 | if (width) { |
9546 | precis = width; | |
9547 | has_precis = TRUE; | |
9548 | width = 0; | |
9549 | } | |
9550 | if (vectorize) | |
9551 | goto unknown; | |
9552 | argsv = va_arg(*args, SV*); | |
9553 | eptr = SvPVx(argsv, elen); | |
9554 | if (DO_UTF8(argsv)) | |
9555 | is_utf8 = TRUE; | |
9556 | goto string; | |
5df617be | 9557 | } |
be75b157 | 9558 | if (alt || vectorize) |
c2e66d9e | 9559 | goto unknown; |
211dfcf1 | 9560 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 9561 | base = 16; |
9562 | goto integer; | |
9563 | ||
46fc3d4c | 9564 | case 'D': |
29fe7a80 | 9565 | #ifdef IV_IS_QUAD |
22f3ae8c | 9566 | intsize = 'q'; |
29fe7a80 | 9567 | #else |
46fc3d4c | 9568 | intsize = 'l'; |
29fe7a80 | 9569 | #endif |
46fc3d4c | 9570 | /* FALL THROUGH */ |
9571 | case 'd': | |
9572 | case 'i': | |
b22c7a20 | 9573 | if (vectorize) { |
ba210ebe | 9574 | STRLEN ulen; |
211dfcf1 HS |
9575 | if (!veclen) |
9576 | continue; | |
2cf2cfc6 A |
9577 | if (vec_utf8) |
9578 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9579 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9580 | else { |
e83d50c9 | 9581 | uv = *vecstr; |
b22c7a20 GS |
9582 | ulen = 1; |
9583 | } | |
9584 | vecstr += ulen; | |
9585 | veclen -= ulen; | |
e83d50c9 JP |
9586 | if (plus) |
9587 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
9588 | } |
9589 | else if (args) { | |
46fc3d4c | 9590 | switch (intsize) { |
9591 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 9592 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 9593 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 9594 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
9595 | #ifdef HAS_QUAD |
9596 | case 'q': iv = va_arg(*args, Quad_t); break; | |
9597 | #endif | |
46fc3d4c | 9598 | } |
9599 | } | |
9600 | else { | |
b10c0dba | 9601 | IV tiv = SvIVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9602 | switch (intsize) { |
b10c0dba MHM |
9603 | case 'h': iv = (short)tiv; break; |
9604 | case 'l': iv = (long)tiv; break; | |
9605 | case 'V': | |
9606 | default: iv = tiv; break; | |
cf2093f6 | 9607 | #ifdef HAS_QUAD |
b10c0dba | 9608 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 9609 | #endif |
46fc3d4c | 9610 | } |
9611 | } | |
e83d50c9 JP |
9612 | if ( !vectorize ) /* we already set uv above */ |
9613 | { | |
9614 | if (iv >= 0) { | |
9615 | uv = iv; | |
9616 | if (plus) | |
9617 | esignbuf[esignlen++] = plus; | |
9618 | } | |
9619 | else { | |
9620 | uv = -iv; | |
9621 | esignbuf[esignlen++] = '-'; | |
9622 | } | |
46fc3d4c | 9623 | } |
9624 | base = 10; | |
9625 | goto integer; | |
9626 | ||
fc36a67e | 9627 | case 'U': |
29fe7a80 | 9628 | #ifdef IV_IS_QUAD |
22f3ae8c | 9629 | intsize = 'q'; |
29fe7a80 | 9630 | #else |
fc36a67e | 9631 | intsize = 'l'; |
29fe7a80 | 9632 | #endif |
fc36a67e | 9633 | /* FALL THROUGH */ |
9634 | case 'u': | |
9635 | base = 10; | |
9636 | goto uns_integer; | |
9637 | ||
4f19785b WSI |
9638 | case 'b': |
9639 | base = 2; | |
9640 | goto uns_integer; | |
9641 | ||
46fc3d4c | 9642 | case 'O': |
29fe7a80 | 9643 | #ifdef IV_IS_QUAD |
22f3ae8c | 9644 | intsize = 'q'; |
29fe7a80 | 9645 | #else |
46fc3d4c | 9646 | intsize = 'l'; |
29fe7a80 | 9647 | #endif |
46fc3d4c | 9648 | /* FALL THROUGH */ |
9649 | case 'o': | |
9650 | base = 8; | |
9651 | goto uns_integer; | |
9652 | ||
9653 | case 'X': | |
46fc3d4c | 9654 | case 'x': |
9655 | base = 16; | |
46fc3d4c | 9656 | |
9657 | uns_integer: | |
b22c7a20 | 9658 | if (vectorize) { |
ba210ebe | 9659 | STRLEN ulen; |
b22c7a20 | 9660 | vector: |
211dfcf1 HS |
9661 | if (!veclen) |
9662 | continue; | |
2cf2cfc6 A |
9663 | if (vec_utf8) |
9664 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9665 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9666 | else { |
a05b299f | 9667 | uv = *vecstr; |
b22c7a20 GS |
9668 | ulen = 1; |
9669 | } | |
9670 | vecstr += ulen; | |
9671 | veclen -= ulen; | |
9672 | } | |
9673 | else if (args) { | |
46fc3d4c | 9674 | switch (intsize) { |
9675 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 9676 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 9677 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 9678 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 9679 | #ifdef HAS_QUAD |
9e3321a5 | 9680 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 9681 | #endif |
46fc3d4c | 9682 | } |
9683 | } | |
9684 | else { | |
b10c0dba | 9685 | UV tuv = SvUVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9686 | switch (intsize) { |
b10c0dba MHM |
9687 | case 'h': uv = (unsigned short)tuv; break; |
9688 | case 'l': uv = (unsigned long)tuv; break; | |
9689 | case 'V': | |
9690 | default: uv = tuv; break; | |
cf2093f6 | 9691 | #ifdef HAS_QUAD |
b10c0dba | 9692 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 9693 | #endif |
46fc3d4c | 9694 | } |
9695 | } | |
9696 | ||
9697 | integer: | |
46fc3d4c | 9698 | eptr = ebuf + sizeof ebuf; |
fc36a67e | 9699 | switch (base) { |
9700 | unsigned dig; | |
9701 | case 16: | |
c10ed8b9 HS |
9702 | if (!uv) |
9703 | alt = FALSE; | |
1d7c1841 GS |
9704 | p = (char*)((c == 'X') |
9705 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
fc36a67e | 9706 | do { |
9707 | dig = uv & 15; | |
9708 | *--eptr = p[dig]; | |
9709 | } while (uv >>= 4); | |
9710 | if (alt) { | |
46fc3d4c | 9711 | esignbuf[esignlen++] = '0'; |
fc36a67e | 9712 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ |
46fc3d4c | 9713 | } |
fc36a67e | 9714 | break; |
9715 | case 8: | |
9716 | do { | |
9717 | dig = uv & 7; | |
9718 | *--eptr = '0' + dig; | |
9719 | } while (uv >>= 3); | |
9720 | if (alt && *eptr != '0') | |
9721 | *--eptr = '0'; | |
9722 | break; | |
4f19785b WSI |
9723 | case 2: |
9724 | do { | |
9725 | dig = uv & 1; | |
9726 | *--eptr = '0' + dig; | |
9727 | } while (uv >>= 1); | |
eda88b6d JH |
9728 | if (alt) { |
9729 | esignbuf[esignlen++] = '0'; | |
7481bb52 | 9730 | esignbuf[esignlen++] = 'b'; |
eda88b6d | 9731 | } |
4f19785b | 9732 | break; |
fc36a67e | 9733 | default: /* it had better be ten or less */ |
9734 | do { | |
9735 | dig = uv % base; | |
9736 | *--eptr = '0' + dig; | |
9737 | } while (uv /= base); | |
9738 | break; | |
46fc3d4c | 9739 | } |
9740 | elen = (ebuf + sizeof ebuf) - eptr; | |
c10ed8b9 HS |
9741 | if (has_precis) { |
9742 | if (precis > elen) | |
9743 | zeros = precis - elen; | |
9744 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9745 | elen = 0; | |
9746 | } | |
46fc3d4c | 9747 | break; |
9748 | ||
9749 | /* FLOATING POINT */ | |
9750 | ||
fc36a67e | 9751 | case 'F': |
9752 | c = 'f'; /* maybe %F isn't supported here */ | |
9753 | /* FALL THROUGH */ | |
46fc3d4c | 9754 | case 'e': case 'E': |
fc36a67e | 9755 | case 'f': |
46fc3d4c | 9756 | case 'g': case 'G': |
9757 | ||
9758 | /* This is evil, but floating point is even more evil */ | |
9759 | ||
9e5b023a JH |
9760 | /* for SV-style calling, we can only get NV |
9761 | for C-style calling, we assume %f is double; | |
9762 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9763 | */ | |
9764 | switch (intsize) { | |
9765 | case 'V': | |
9766 | #if defined(USE_LONG_DOUBLE) | |
9767 | intsize = 'q'; | |
9768 | #endif | |
9769 | break; | |
8a2e3f14 | 9770 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9771 | case 'l': |
9772 | /* FALL THROUGH */ | |
9e5b023a JH |
9773 | default: |
9774 | #if defined(USE_LONG_DOUBLE) | |
9775 | intsize = args ? 0 : 'q'; | |
9776 | #endif | |
9777 | break; | |
9778 | case 'q': | |
9779 | #if defined(HAS_LONG_DOUBLE) | |
9780 | break; | |
9781 | #else | |
9782 | /* FALL THROUGH */ | |
9783 | #endif | |
9784 | case 'h': | |
9e5b023a JH |
9785 | goto unknown; |
9786 | } | |
9787 | ||
9788 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9789 | nv = (args && !vectorize) ? |
35fff930 JH |
9790 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9791 | intsize == 'q' ? | |
205f51d8 AS |
9792 | va_arg(*args, long double) : |
9793 | va_arg(*args, double) | |
35fff930 | 9794 | #else |
205f51d8 | 9795 | va_arg(*args, double) |
35fff930 | 9796 | #endif |
9e5b023a | 9797 | : SvNVx(argsv); |
fc36a67e | 9798 | |
9799 | need = 0; | |
be75b157 | 9800 | vectorize = FALSE; |
fc36a67e | 9801 | if (c != 'e' && c != 'E') { |
9802 | i = PERL_INT_MIN; | |
9e5b023a JH |
9803 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9804 | will cast our (long double) to (double) */ | |
73b309ea | 9805 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9806 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9807 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9808 | if (i > 0) |
fc36a67e | 9809 | need = BIT_DIGITS(i); |
9810 | } | |
9811 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9812 | |
fc36a67e | 9813 | if (need < width) |
9814 | need = width; | |
9815 | ||
20f6aaab AS |
9816 | #ifdef HAS_LDBL_SPRINTF_BUG |
9817 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9818 | with sfio - Allen <allens@cpan.org> */ |
9819 | ||
9820 | # ifdef DBL_MAX | |
9821 | # define MY_DBL_MAX DBL_MAX | |
9822 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9823 | # if DOUBLESIZE >= 8 | |
9824 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9825 | # else | |
9826 | # define MY_DBL_MAX 3.40282347E+38L | |
9827 | # endif | |
9828 | # endif | |
9829 | ||
9830 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9831 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9832 | # else |
205f51d8 | 9833 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9834 | # endif |
20f6aaab | 9835 | |
205f51d8 AS |
9836 | # ifdef DBL_MIN |
9837 | # define MY_DBL_MIN DBL_MIN | |
9838 | # else /* XXX guessing! -Allen */ | |
9839 | # if DOUBLESIZE >= 8 | |
9840 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9841 | # else | |
9842 | # define MY_DBL_MIN 1.17549435E-38L | |
9843 | # endif | |
9844 | # endif | |
20f6aaab | 9845 | |
205f51d8 AS |
9846 | if ((intsize == 'q') && (c == 'f') && |
9847 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9848 | (need < DBL_DIG)) { | |
9849 | /* it's going to be short enough that | |
9850 | * long double precision is not needed */ | |
9851 | ||
9852 | if ((nv <= 0L) && (nv >= -0L)) | |
9853 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9854 | else { | |
9855 | /* would use Perl_fp_class as a double-check but not | |
9856 | * functional on IRIX - see perl.h comments */ | |
9857 | ||
9858 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9859 | /* It's within the range that a double can represent */ | |
9860 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9861 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9862 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9863 | #endif |
205f51d8 | 9864 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9865 | } |
205f51d8 AS |
9866 | } |
9867 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9868 | double temp; | |
9869 | ||
9870 | intsize = 0; | |
9871 | temp = (double)nv; | |
9872 | nv = (NV)temp; | |
9873 | } | |
20f6aaab | 9874 | } |
205f51d8 AS |
9875 | |
9876 | # undef MY_DBL_MAX | |
9877 | # undef MY_DBL_MAX_BUG | |
9878 | # undef MY_DBL_MIN | |
9879 | ||
20f6aaab AS |
9880 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9881 | ||
46fc3d4c | 9882 | need += 20; /* fudge factor */ |
80252599 GS |
9883 | if (PL_efloatsize < need) { |
9884 | Safefree(PL_efloatbuf); | |
9885 | PL_efloatsize = need + 20; /* more fudge */ | |
9886 | New(906, PL_efloatbuf, PL_efloatsize, char); | |
7d5ea4e7 | 9887 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9888 | } |
9889 | ||
4151a5fe IZ |
9890 | if ( !(width || left || plus || alt) && fill != '0' |
9891 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
9892 | /* See earlier comment about buggy Gconvert when digits, |
9893 | aka precis is 0 */ | |
9894 | if ( c == 'g' && precis) { | |
2e59c212 | 9895 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4151a5fe IZ |
9896 | if (*PL_efloatbuf) /* May return an empty string for digits==0 */ |
9897 | goto float_converted; | |
9898 | } else if ( c == 'f' && !precis) { | |
9899 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
9900 | break; | |
9901 | } | |
9902 | } | |
46fc3d4c | 9903 | eptr = ebuf + sizeof ebuf; |
9904 | *--eptr = '\0'; | |
9905 | *--eptr = c; | |
9e5b023a JH |
9906 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ |
9907 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) | |
9908 | if (intsize == 'q') { | |
e5c81feb JH |
9909 | /* Copy the one or more characters in a long double |
9910 | * format before the 'base' ([efgEFG]) character to | |
9911 | * the format string. */ | |
9912 | static char const prifldbl[] = PERL_PRIfldbl; | |
9913 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9914 | while (p >= prifldbl) { *--eptr = *p--; } | |
cf2093f6 | 9915 | } |
65202027 | 9916 | #endif |
46fc3d4c | 9917 | if (has_precis) { |
9918 | base = precis; | |
9919 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9920 | *--eptr = '.'; | |
9921 | } | |
9922 | if (width) { | |
9923 | base = width; | |
9924 | do { *--eptr = '0' + (base % 10); } while (base /= 10); | |
9925 | } | |
9926 | if (fill == '0') | |
9927 | *--eptr = fill; | |
84902520 TB |
9928 | if (left) |
9929 | *--eptr = '-'; | |
46fc3d4c | 9930 | if (plus) |
9931 | *--eptr = plus; | |
9932 | if (alt) | |
9933 | *--eptr = '#'; | |
9934 | *--eptr = '%'; | |
9935 | ||
ff9121f8 JH |
9936 | /* No taint. Otherwise we are in the strange situation |
9937 | * where printf() taints but print($float) doesn't. | |
bda0f7a5 | 9938 | * --jhi */ |
9e5b023a JH |
9939 | #if defined(HAS_LONG_DOUBLE) |
9940 | if (intsize == 'q') | |
9941 | (void)sprintf(PL_efloatbuf, eptr, nv); | |
9942 | else | |
9943 | (void)sprintf(PL_efloatbuf, eptr, (double)nv); | |
9944 | #else | |
dd8482fc | 9945 | (void)sprintf(PL_efloatbuf, eptr, nv); |
9e5b023a | 9946 | #endif |
4151a5fe | 9947 | float_converted: |
80252599 GS |
9948 | eptr = PL_efloatbuf; |
9949 | elen = strlen(PL_efloatbuf); | |
46fc3d4c | 9950 | break; |
9951 | ||
fc36a67e | 9952 | /* SPECIAL */ |
9953 | ||
9954 | case 'n': | |
9955 | i = SvCUR(sv) - origlen; | |
be75b157 | 9956 | if (args && !vectorize) { |
c635e13b | 9957 | switch (intsize) { |
9958 | case 'h': *(va_arg(*args, short*)) = i; break; | |
9959 | default: *(va_arg(*args, int*)) = i; break; | |
9960 | case 'l': *(va_arg(*args, long*)) = i; break; | |
9961 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
9962 | #ifdef HAS_QUAD |
9963 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
9964 | #endif | |
c635e13b | 9965 | } |
fc36a67e | 9966 | } |
9dd79c3f | 9967 | else |
211dfcf1 | 9968 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 9969 | vectorize = FALSE; |
fc36a67e | 9970 | continue; /* not "break" */ |
9971 | ||
9972 | /* UNKNOWN */ | |
9973 | ||
46fc3d4c | 9974 | default: |
fc36a67e | 9975 | unknown: |
599cee73 | 9976 | if (!args && ckWARN(WARN_PRINTF) && |
533c011a | 9977 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) { |
c635e13b | 9978 | SV *msg = sv_newmortal(); |
35c1215d NC |
9979 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
9980 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 9981 | if (c) { |
0f4b6630 | 9982 | if (isPRINT(c)) |
1c846c1f | 9983 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
9984 | "\"%%%c\"", c & 0xFF); |
9985 | else | |
9986 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 9987 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 9988 | (UV)c & 0xFF); |
0f4b6630 | 9989 | } else |
c635e13b | 9990 | sv_catpv(msg, "end of string"); |
9014280d | 9991 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 9992 | } |
fb73857a | 9993 | |
9994 | /* output mangled stuff ... */ | |
9995 | if (c == '\0') | |
9996 | --q; | |
46fc3d4c | 9997 | eptr = p; |
9998 | elen = q - p; | |
fb73857a | 9999 | |
10000 | /* ... right here, because formatting flags should not apply */ | |
10001 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10002 | p = SvEND(sv); | |
4459522c | 10003 | Copy(eptr, p, elen, char); |
fb73857a | 10004 | p += elen; |
10005 | *p = '\0'; | |
b162af07 | 10006 | SvCUR_set(sv, p - SvPVX(sv)); |
58e33a90 | 10007 | svix = osvix; |
fb73857a | 10008 | continue; /* not "break" */ |
46fc3d4c | 10009 | } |
10010 | ||
6c94ec8b HS |
10011 | /* calculate width before utf8_upgrade changes it */ |
10012 | have = esignlen + zeros + elen; | |
10013 | ||
d2876be5 JH |
10014 | if (is_utf8 != has_utf8) { |
10015 | if (is_utf8) { | |
10016 | if (SvCUR(sv)) | |
10017 | sv_utf8_upgrade(sv); | |
10018 | } | |
10019 | else { | |
10020 | SV *nsv = sv_2mortal(newSVpvn(eptr, elen)); | |
10021 | sv_utf8_upgrade(nsv); | |
10022 | eptr = SvPVX(nsv); | |
10023 | elen = SvCUR(nsv); | |
10024 | } | |
10025 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10026 | p = SvEND(sv); | |
10027 | *p = '\0'; | |
10028 | } | |
6af65485 | 10029 | |
46fc3d4c | 10030 | need = (have > width ? have : width); |
10031 | gap = need - have; | |
10032 | ||
b22c7a20 | 10033 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 10034 | p = SvEND(sv); |
10035 | if (esignlen && fill == '0') { | |
eb160463 | 10036 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10037 | *p++ = esignbuf[i]; |
10038 | } | |
10039 | if (gap && !left) { | |
10040 | memset(p, fill, gap); | |
10041 | p += gap; | |
10042 | } | |
10043 | if (esignlen && fill != '0') { | |
eb160463 | 10044 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10045 | *p++ = esignbuf[i]; |
10046 | } | |
fc36a67e | 10047 | if (zeros) { |
10048 | for (i = zeros; i; i--) | |
10049 | *p++ = '0'; | |
10050 | } | |
46fc3d4c | 10051 | if (elen) { |
4459522c | 10052 | Copy(eptr, p, elen, char); |
46fc3d4c | 10053 | p += elen; |
10054 | } | |
10055 | if (gap && left) { | |
10056 | memset(p, ' ', gap); | |
10057 | p += gap; | |
10058 | } | |
b22c7a20 GS |
10059 | if (vectorize) { |
10060 | if (veclen) { | |
4459522c | 10061 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
10062 | p += dotstrlen; |
10063 | } | |
10064 | else | |
10065 | vectorize = FALSE; /* done iterating over vecstr */ | |
10066 | } | |
2cf2cfc6 A |
10067 | if (is_utf8) |
10068 | has_utf8 = TRUE; | |
10069 | if (has_utf8) | |
7e2040f0 | 10070 | SvUTF8_on(sv); |
46fc3d4c | 10071 | *p = '\0'; |
b162af07 | 10072 | SvCUR_set(sv, p - SvPVX(sv)); |
b22c7a20 GS |
10073 | if (vectorize) { |
10074 | esignlen = 0; | |
10075 | goto vector; | |
10076 | } | |
46fc3d4c | 10077 | } |
10078 | } | |
51371543 | 10079 | |
645c22ef DM |
10080 | /* ========================================================================= |
10081 | ||
10082 | =head1 Cloning an interpreter | |
10083 | ||
10084 | All the macros and functions in this section are for the private use of | |
10085 | the main function, perl_clone(). | |
10086 | ||
10087 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
10088 | During the course of a cloning, a hash table is used to map old addresses | |
10089 | to new addresses. The table is created and manipulated with the | |
10090 | ptr_table_* functions. | |
10091 | ||
10092 | =cut | |
10093 | ||
10094 | ============================================================================*/ | |
10095 | ||
10096 | ||
1d7c1841 GS |
10097 | #if defined(USE_ITHREADS) |
10098 | ||
1d7c1841 GS |
10099 | #ifndef GpREFCNT_inc |
10100 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
10101 | #endif | |
10102 | ||
10103 | ||
d2d73c3e AB |
10104 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
10105 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
10106 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10107 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
10108 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10109 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
10110 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10111 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
10112 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10113 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
10114 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
10115 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
10116 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 10117 | |
d2d73c3e | 10118 | |
d2f185dc AMS |
10119 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
10120 | regcomp.c. AMS 20010712 */ | |
645c22ef | 10121 | |
1d7c1841 | 10122 | REGEXP * |
a8fc9800 | 10123 | Perl_re_dup(pTHX_ REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 10124 | { |
27da23d5 | 10125 | dVAR; |
d2f185dc AMS |
10126 | REGEXP *ret; |
10127 | int i, len, npar; | |
10128 | struct reg_substr_datum *s; | |
10129 | ||
10130 | if (!r) | |
10131 | return (REGEXP *)NULL; | |
10132 | ||
10133 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
10134 | return ret; | |
10135 | ||
10136 | len = r->offsets[0]; | |
10137 | npar = r->nparens+1; | |
10138 | ||
10139 | Newc(0, ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); | |
10140 | Copy(r->program, ret->program, len+1, regnode); | |
10141 | ||
10142 | New(0, ret->startp, npar, I32); | |
10143 | Copy(r->startp, ret->startp, npar, I32); | |
10144 | New(0, ret->endp, npar, I32); | |
10145 | Copy(r->startp, ret->startp, npar, I32); | |
10146 | ||
d2f185dc AMS |
10147 | New(0, ret->substrs, 1, struct reg_substr_data); |
10148 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { | |
10149 | s->min_offset = r->substrs->data[i].min_offset; | |
10150 | s->max_offset = r->substrs->data[i].max_offset; | |
10151 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 10152 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
10153 | } |
10154 | ||
70612e96 | 10155 | ret->regstclass = NULL; |
d2f185dc AMS |
10156 | if (r->data) { |
10157 | struct reg_data *d; | |
e1ec3a88 | 10158 | const int count = r->data->count; |
d2f185dc AMS |
10159 | |
10160 | Newc(0, d, sizeof(struct reg_data) + count*sizeof(void *), | |
10161 | char, struct reg_data); | |
10162 | New(0, d->what, count, U8); | |
10163 | ||
10164 | d->count = count; | |
10165 | for (i = 0; i < count; i++) { | |
10166 | d->what[i] = r->data->what[i]; | |
10167 | switch (d->what[i]) { | |
a3621e74 YO |
10168 | /* legal options are one of: sfpont |
10169 | see also regcomp.h and pregfree() */ | |
d2f185dc AMS |
10170 | case 's': |
10171 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
10172 | break; | |
10173 | case 'p': | |
10174 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
10175 | break; | |
10176 | case 'f': | |
10177 | /* This is cheating. */ | |
10178 | New(0, d->data[i], 1, struct regnode_charclass_class); | |
10179 | StructCopy(r->data->data[i], d->data[i], | |
10180 | struct regnode_charclass_class); | |
70612e96 | 10181 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
10182 | break; |
10183 | case 'o': | |
33773810 AMS |
10184 | /* Compiled op trees are readonly, and can thus be |
10185 | shared without duplication. */ | |
b34c0dd4 | 10186 | OP_REFCNT_LOCK; |
9b978d73 | 10187 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
b34c0dd4 | 10188 | OP_REFCNT_UNLOCK; |
9b978d73 | 10189 | break; |
d2f185dc AMS |
10190 | case 'n': |
10191 | d->data[i] = r->data->data[i]; | |
10192 | break; | |
a3621e74 YO |
10193 | case 't': |
10194 | d->data[i] = r->data->data[i]; | |
10195 | OP_REFCNT_LOCK; | |
10196 | ((reg_trie_data*)d->data[i])->refcount++; | |
10197 | OP_REFCNT_UNLOCK; | |
10198 | break; | |
10199 | default: | |
10200 | Perl_croak(aTHX_ "panic: re_dup unknown data code '%c'", r->data->what[i]); | |
d2f185dc AMS |
10201 | } |
10202 | } | |
10203 | ||
10204 | ret->data = d; | |
10205 | } | |
10206 | else | |
10207 | ret->data = NULL; | |
10208 | ||
10209 | New(0, ret->offsets, 2*len+1, U32); | |
10210 | Copy(r->offsets, ret->offsets, 2*len+1, U32); | |
10211 | ||
e01c5899 | 10212 | ret->precomp = SAVEPVN(r->precomp, r->prelen); |
d2f185dc AMS |
10213 | ret->refcnt = r->refcnt; |
10214 | ret->minlen = r->minlen; | |
10215 | ret->prelen = r->prelen; | |
10216 | ret->nparens = r->nparens; | |
10217 | ret->lastparen = r->lastparen; | |
10218 | ret->lastcloseparen = r->lastcloseparen; | |
10219 | ret->reganch = r->reganch; | |
10220 | ||
70612e96 RG |
10221 | ret->sublen = r->sublen; |
10222 | ||
10223 | if (RX_MATCH_COPIED(ret)) | |
e01c5899 | 10224 | ret->subbeg = SAVEPVN(r->subbeg, r->sublen); |
70612e96 RG |
10225 | else |
10226 | ret->subbeg = Nullch; | |
9a26048b NC |
10227 | #ifdef PERL_COPY_ON_WRITE |
10228 | ret->saved_copy = Nullsv; | |
10229 | #endif | |
70612e96 | 10230 | |
d2f185dc AMS |
10231 | ptr_table_store(PL_ptr_table, r, ret); |
10232 | return ret; | |
1d7c1841 GS |
10233 | } |
10234 | ||
d2d73c3e | 10235 | /* duplicate a file handle */ |
645c22ef | 10236 | |
1d7c1841 | 10237 | PerlIO * |
a8fc9800 | 10238 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
10239 | { |
10240 | PerlIO *ret; | |
73d840c0 AL |
10241 | (void)type; |
10242 | ||
1d7c1841 GS |
10243 | if (!fp) |
10244 | return (PerlIO*)NULL; | |
10245 | ||
10246 | /* look for it in the table first */ | |
10247 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
10248 | if (ret) | |
10249 | return ret; | |
10250 | ||
10251 | /* create anew and remember what it is */ | |
ecdeb87c | 10252 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
10253 | ptr_table_store(PL_ptr_table, fp, ret); |
10254 | return ret; | |
10255 | } | |
10256 | ||
645c22ef DM |
10257 | /* duplicate a directory handle */ |
10258 | ||
1d7c1841 GS |
10259 | DIR * |
10260 | Perl_dirp_dup(pTHX_ DIR *dp) | |
10261 | { | |
10262 | if (!dp) | |
10263 | return (DIR*)NULL; | |
10264 | /* XXX TODO */ | |
10265 | return dp; | |
10266 | } | |
10267 | ||
ff276b08 | 10268 | /* duplicate a typeglob */ |
645c22ef | 10269 | |
1d7c1841 | 10270 | GP * |
a8fc9800 | 10271 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
10272 | { |
10273 | GP *ret; | |
10274 | if (!gp) | |
10275 | return (GP*)NULL; | |
10276 | /* look for it in the table first */ | |
10277 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
10278 | if (ret) | |
10279 | return ret; | |
10280 | ||
10281 | /* create anew and remember what it is */ | |
10282 | Newz(0, ret, 1, GP); | |
10283 | ptr_table_store(PL_ptr_table, gp, ret); | |
10284 | ||
10285 | /* clone */ | |
10286 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
10287 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
10288 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
10289 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
10290 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
10291 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
10292 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
10293 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 GS |
10294 | ret->gp_cvgen = gp->gp_cvgen; |
10295 | ret->gp_flags = gp->gp_flags; | |
10296 | ret->gp_line = gp->gp_line; | |
10297 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
10298 | return ret; | |
10299 | } | |
10300 | ||
645c22ef DM |
10301 | /* duplicate a chain of magic */ |
10302 | ||
1d7c1841 | 10303 | MAGIC * |
a8fc9800 | 10304 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 10305 | { |
cb359b41 JH |
10306 | MAGIC *mgprev = (MAGIC*)NULL; |
10307 | MAGIC *mgret; | |
1d7c1841 GS |
10308 | if (!mg) |
10309 | return (MAGIC*)NULL; | |
10310 | /* look for it in the table first */ | |
10311 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
10312 | if (mgret) | |
10313 | return mgret; | |
10314 | ||
10315 | for (; mg; mg = mg->mg_moremagic) { | |
10316 | MAGIC *nmg; | |
10317 | Newz(0, nmg, 1, MAGIC); | |
cb359b41 | 10318 | if (mgprev) |
1d7c1841 | 10319 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
10320 | else |
10321 | mgret = nmg; | |
1d7c1841 GS |
10322 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
10323 | nmg->mg_private = mg->mg_private; | |
10324 | nmg->mg_type = mg->mg_type; | |
10325 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 10326 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 10327 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 10328 | } |
05bd4103 | 10329 | else if(mg->mg_type == PERL_MAGIC_backref) { |
7fc63493 | 10330 | const AV * const av = (AV*) mg->mg_obj; |
fdc9a813 AE |
10331 | SV **svp; |
10332 | I32 i; | |
7fc63493 | 10333 | (void)SvREFCNT_inc(nmg->mg_obj = (SV*)newAV()); |
fdc9a813 AE |
10334 | svp = AvARRAY(av); |
10335 | for (i = AvFILLp(av); i >= 0; i--) { | |
3a81978b | 10336 | if (!svp[i]) continue; |
fdc9a813 AE |
10337 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); |
10338 | } | |
05bd4103 | 10339 | } |
8d2f4536 NC |
10340 | else if (mg->mg_type == PERL_MAGIC_symtab) { |
10341 | nmg->mg_obj = mg->mg_obj; | |
10342 | } | |
1d7c1841 GS |
10343 | else { |
10344 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
10345 | ? sv_dup_inc(mg->mg_obj, param) |
10346 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
10347 | } |
10348 | nmg->mg_len = mg->mg_len; | |
10349 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 10350 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 10351 | if (mg->mg_len > 0) { |
1d7c1841 | 10352 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
10353 | if (mg->mg_type == PERL_MAGIC_overload_table && |
10354 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
10355 | { | |
1d7c1841 GS |
10356 | AMT *amtp = (AMT*)mg->mg_ptr; |
10357 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
10358 | I32 i; | |
10359 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 10360 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
10361 | } |
10362 | } | |
10363 | } | |
10364 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 10365 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 10366 | } |
68795e93 NIS |
10367 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
10368 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
10369 | } | |
1d7c1841 GS |
10370 | mgprev = nmg; |
10371 | } | |
10372 | return mgret; | |
10373 | } | |
10374 | ||
645c22ef DM |
10375 | /* create a new pointer-mapping table */ |
10376 | ||
1d7c1841 GS |
10377 | PTR_TBL_t * |
10378 | Perl_ptr_table_new(pTHX) | |
10379 | { | |
10380 | PTR_TBL_t *tbl; | |
10381 | Newz(0, tbl, 1, PTR_TBL_t); | |
10382 | tbl->tbl_max = 511; | |
10383 | tbl->tbl_items = 0; | |
10384 | Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); | |
10385 | return tbl; | |
10386 | } | |
10387 | ||
134ca3d6 DM |
10388 | #if (PTRSIZE == 8) |
10389 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 3) | |
10390 | #else | |
10391 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 2) | |
10392 | #endif | |
10393 | ||
32e691d0 NC |
10394 | |
10395 | ||
10396 | STATIC void | |
10397 | S_more_pte(pTHX) | |
10398 | { | |
cac9b346 NC |
10399 | struct ptr_tbl_ent* pte; |
10400 | struct ptr_tbl_ent* pteend; | |
c3929b72 NC |
10401 | New(0, pte, PERL_ARENA_SIZE/sizeof(struct ptr_tbl_ent), struct ptr_tbl_ent); |
10402 | pte->next = PL_pte_arenaroot; | |
10403 | PL_pte_arenaroot = pte; | |
32e691d0 | 10404 | |
9c17f24a | 10405 | pteend = &pte[PERL_ARENA_SIZE / sizeof(struct ptr_tbl_ent) - 1]; |
32e691d0 NC |
10406 | PL_pte_root = ++pte; |
10407 | while (pte < pteend) { | |
10408 | pte->next = pte + 1; | |
10409 | pte++; | |
10410 | } | |
10411 | pte->next = 0; | |
10412 | } | |
10413 | ||
10414 | STATIC struct ptr_tbl_ent* | |
10415 | S_new_pte(pTHX) | |
10416 | { | |
10417 | struct ptr_tbl_ent* pte; | |
10418 | if (!PL_pte_root) | |
10419 | S_more_pte(aTHX); | |
10420 | pte = PL_pte_root; | |
10421 | PL_pte_root = pte->next; | |
10422 | return pte; | |
10423 | } | |
10424 | ||
10425 | STATIC void | |
10426 | S_del_pte(pTHX_ struct ptr_tbl_ent*p) | |
10427 | { | |
10428 | p->next = PL_pte_root; | |
10429 | PL_pte_root = p; | |
10430 | } | |
10431 | ||
645c22ef DM |
10432 | /* map an existing pointer using a table */ |
10433 | ||
1d7c1841 GS |
10434 | void * |
10435 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv) | |
10436 | { | |
10437 | PTR_TBL_ENT_t *tblent; | |
4373e329 | 10438 | const UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
10439 | assert(tbl); |
10440 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
10441 | for (; tblent; tblent = tblent->next) { | |
10442 | if (tblent->oldval == sv) | |
10443 | return tblent->newval; | |
10444 | } | |
10445 | return (void*)NULL; | |
10446 | } | |
10447 | ||
645c22ef DM |
10448 | /* add a new entry to a pointer-mapping table */ |
10449 | ||
1d7c1841 GS |
10450 | void |
10451 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv) | |
10452 | { | |
10453 | PTR_TBL_ENT_t *tblent, **otblent; | |
10454 | /* XXX this may be pessimal on platforms where pointers aren't good | |
10455 | * hash values e.g. if they grow faster in the most significant | |
10456 | * bits */ | |
4373e329 | 10457 | const UV hash = PTR_TABLE_HASH(oldv); |
14cade97 | 10458 | bool empty = 1; |
1d7c1841 GS |
10459 | |
10460 | assert(tbl); | |
10461 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
14cade97 | 10462 | for (tblent = *otblent; tblent; empty=0, tblent = tblent->next) { |
1d7c1841 GS |
10463 | if (tblent->oldval == oldv) { |
10464 | tblent->newval = newv; | |
1d7c1841 GS |
10465 | return; |
10466 | } | |
10467 | } | |
32e691d0 | 10468 | tblent = S_new_pte(aTHX); |
1d7c1841 GS |
10469 | tblent->oldval = oldv; |
10470 | tblent->newval = newv; | |
10471 | tblent->next = *otblent; | |
10472 | *otblent = tblent; | |
10473 | tbl->tbl_items++; | |
14cade97 | 10474 | if (!empty && tbl->tbl_items > tbl->tbl_max) |
1d7c1841 GS |
10475 | ptr_table_split(tbl); |
10476 | } | |
10477 | ||
645c22ef DM |
10478 | /* double the hash bucket size of an existing ptr table */ |
10479 | ||
1d7c1841 GS |
10480 | void |
10481 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
10482 | { | |
10483 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
4373e329 | 10484 | const UV oldsize = tbl->tbl_max + 1; |
1d7c1841 GS |
10485 | UV newsize = oldsize * 2; |
10486 | UV i; | |
10487 | ||
10488 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
10489 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
10490 | tbl->tbl_max = --newsize; | |
10491 | tbl->tbl_ary = ary; | |
10492 | for (i=0; i < oldsize; i++, ary++) { | |
10493 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
10494 | if (!*ary) | |
10495 | continue; | |
10496 | curentp = ary + oldsize; | |
10497 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 10498 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
10499 | *entp = ent->next; |
10500 | ent->next = *curentp; | |
10501 | *curentp = ent; | |
10502 | continue; | |
10503 | } | |
10504 | else | |
10505 | entp = &ent->next; | |
10506 | } | |
10507 | } | |
10508 | } | |
10509 | ||
645c22ef DM |
10510 | /* remove all the entries from a ptr table */ |
10511 | ||
a0739874 DM |
10512 | void |
10513 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
10514 | { | |
10515 | register PTR_TBL_ENT_t **array; | |
10516 | register PTR_TBL_ENT_t *entry; | |
a0739874 DM |
10517 | UV riter = 0; |
10518 | UV max; | |
10519 | ||
10520 | if (!tbl || !tbl->tbl_items) { | |
10521 | return; | |
10522 | } | |
10523 | ||
10524 | array = tbl->tbl_ary; | |
10525 | entry = array[0]; | |
10526 | max = tbl->tbl_max; | |
10527 | ||
10528 | for (;;) { | |
10529 | if (entry) { | |
4373e329 | 10530 | PTR_TBL_ENT_t *oentry = entry; |
a0739874 | 10531 | entry = entry->next; |
32e691d0 | 10532 | S_del_pte(aTHX_ oentry); |
a0739874 DM |
10533 | } |
10534 | if (!entry) { | |
10535 | if (++riter > max) { | |
10536 | break; | |
10537 | } | |
10538 | entry = array[riter]; | |
10539 | } | |
10540 | } | |
10541 | ||
10542 | tbl->tbl_items = 0; | |
10543 | } | |
10544 | ||
645c22ef DM |
10545 | /* clear and free a ptr table */ |
10546 | ||
a0739874 DM |
10547 | void |
10548 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
10549 | { | |
10550 | if (!tbl) { | |
10551 | return; | |
10552 | } | |
10553 | ptr_table_clear(tbl); | |
10554 | Safefree(tbl->tbl_ary); | |
10555 | Safefree(tbl); | |
10556 | } | |
10557 | ||
645c22ef DM |
10558 | /* attempt to make everything in the typeglob readonly */ |
10559 | ||
5bd07a3d | 10560 | STATIC SV * |
59b40662 | 10561 | S_gv_share(pTHX_ SV *sstr, CLONE_PARAMS *param) |
5bd07a3d DM |
10562 | { |
10563 | GV *gv = (GV*)sstr; | |
59b40662 | 10564 | SV *sv = ¶m->proto_perl->Isv_no; /* just need SvREADONLY-ness */ |
5bd07a3d DM |
10565 | |
10566 | if (GvIO(gv) || GvFORM(gv)) { | |
7fb37951 | 10567 | GvUNIQUE_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */ |
5bd07a3d DM |
10568 | } |
10569 | else if (!GvCV(gv)) { | |
10570 | GvCV(gv) = (CV*)sv; | |
10571 | } | |
10572 | else { | |
10573 | /* CvPADLISTs cannot be shared */ | |
37e20706 | 10574 | if (!SvREADONLY(GvCV(gv)) && !CvXSUB(GvCV(gv))) { |
7fb37951 | 10575 | GvUNIQUE_off(gv); |
5bd07a3d DM |
10576 | } |
10577 | } | |
10578 | ||
7fb37951 | 10579 | if (!GvUNIQUE(gv)) { |
5bd07a3d DM |
10580 | #if 0 |
10581 | PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n", | |
bfcb3514 | 10582 | HvNAME_get(GvSTASH(gv)), GvNAME(gv)); |
5bd07a3d DM |
10583 | #endif |
10584 | return Nullsv; | |
10585 | } | |
10586 | ||
4411f3b6 | 10587 | /* |
5bd07a3d DM |
10588 | * write attempts will die with |
10589 | * "Modification of a read-only value attempted" | |
10590 | */ | |
10591 | if (!GvSV(gv)) { | |
10592 | GvSV(gv) = sv; | |
10593 | } | |
10594 | else { | |
10595 | SvREADONLY_on(GvSV(gv)); | |
10596 | } | |
10597 | ||
10598 | if (!GvAV(gv)) { | |
10599 | GvAV(gv) = (AV*)sv; | |
10600 | } | |
10601 | else { | |
10602 | SvREADONLY_on(GvAV(gv)); | |
10603 | } | |
10604 | ||
10605 | if (!GvHV(gv)) { | |
10606 | GvHV(gv) = (HV*)sv; | |
10607 | } | |
10608 | else { | |
53c33732 | 10609 | SvREADONLY_on(GvHV(gv)); |
5bd07a3d DM |
10610 | } |
10611 | ||
10612 | return sstr; /* he_dup() will SvREFCNT_inc() */ | |
10613 | } | |
10614 | ||
645c22ef DM |
10615 | /* duplicate an SV of any type (including AV, HV etc) */ |
10616 | ||
83841fad NIS |
10617 | void |
10618 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
10619 | { | |
10620 | if (SvROK(sstr)) { | |
b162af07 SP |
10621 | SvRV_set(dstr, SvWEAKREF(sstr) |
10622 | ? sv_dup(SvRV(sstr), param) | |
10623 | : sv_dup_inc(SvRV(sstr), param)); | |
f880fe2f | 10624 | |
83841fad NIS |
10625 | } |
10626 | else if (SvPVX(sstr)) { | |
10627 | /* Has something there */ | |
10628 | if (SvLEN(sstr)) { | |
68795e93 | 10629 | /* Normal PV - clone whole allocated space */ |
f880fe2f | 10630 | SvPV_set(dstr, SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1)); |
d3d0e6f1 NC |
10631 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
10632 | /* Not that normal - actually sstr is copy on write. | |
10633 | But we are a true, independant SV, so: */ | |
10634 | SvREADONLY_off(dstr); | |
10635 | SvFAKE_off(dstr); | |
10636 | } | |
68795e93 | 10637 | } |
83841fad NIS |
10638 | else { |
10639 | /* Special case - not normally malloced for some reason */ | |
10640 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { | |
10641 | /* A "shared" PV - clone it as unshared string */ | |
281b2760 | 10642 | if(SvPADTMP(sstr)) { |
5e6160dc AB |
10643 | /* However, some of them live in the pad |
10644 | and they should not have these flags | |
10645 | turned off */ | |
281b2760 | 10646 | |
f880fe2f SP |
10647 | SvPV_set(dstr, sharepvn(SvPVX(sstr), SvCUR(sstr), |
10648 | SvUVX(sstr))); | |
607fa7f2 | 10649 | SvUV_set(dstr, SvUVX(sstr)); |
281b2760 AB |
10650 | } else { |
10651 | ||
f880fe2f | 10652 | SvPV_set(dstr, SAVEPVN(SvPVX(sstr), SvCUR(sstr))); |
281b2760 AB |
10653 | SvFAKE_off(dstr); |
10654 | SvREADONLY_off(dstr); | |
5e6160dc | 10655 | } |
83841fad NIS |
10656 | } |
10657 | else { | |
10658 | /* Some other special case - random pointer */ | |
f880fe2f | 10659 | SvPV_set(dstr, SvPVX(sstr)); |
d3d0e6f1 | 10660 | } |
83841fad NIS |
10661 | } |
10662 | } | |
10663 | else { | |
10664 | /* Copy the Null */ | |
f880fe2f | 10665 | if (SvTYPE(dstr) == SVt_RV) |
b162af07 | 10666 | SvRV_set(dstr, NULL); |
f880fe2f SP |
10667 | else |
10668 | SvPV_set(dstr, 0); | |
83841fad NIS |
10669 | } |
10670 | } | |
10671 | ||
1d7c1841 | 10672 | SV * |
a8fc9800 | 10673 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 10674 | { |
27da23d5 | 10675 | dVAR; |
1d7c1841 GS |
10676 | SV *dstr; |
10677 | ||
10678 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
10679 | return Nullsv; | |
10680 | /* look for it in the table first */ | |
10681 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
10682 | if (dstr) | |
10683 | return dstr; | |
10684 | ||
0405e91e AB |
10685 | if(param->flags & CLONEf_JOIN_IN) { |
10686 | /** We are joining here so we don't want do clone | |
10687 | something that is bad **/ | |
bfcb3514 | 10688 | const char *hvname; |
0405e91e AB |
10689 | |
10690 | if(SvTYPE(sstr) == SVt_PVHV && | |
bfcb3514 | 10691 | (hvname = HvNAME_get(sstr))) { |
0405e91e | 10692 | /** don't clone stashes if they already exist **/ |
bfcb3514 | 10693 | HV* old_stash = gv_stashpv(hvname,0); |
0405e91e AB |
10694 | return (SV*) old_stash; |
10695 | } | |
10696 | } | |
10697 | ||
1d7c1841 GS |
10698 | /* create anew and remember what it is */ |
10699 | new_SV(dstr); | |
fd0854ff DM |
10700 | |
10701 | #ifdef DEBUG_LEAKING_SCALARS | |
10702 | dstr->sv_debug_optype = sstr->sv_debug_optype; | |
10703 | dstr->sv_debug_line = sstr->sv_debug_line; | |
10704 | dstr->sv_debug_inpad = sstr->sv_debug_inpad; | |
10705 | dstr->sv_debug_cloned = 1; | |
10706 | # ifdef NETWARE | |
10707 | dstr->sv_debug_file = savepv(sstr->sv_debug_file); | |
10708 | # else | |
10709 | dstr->sv_debug_file = savesharedpv(sstr->sv_debug_file); | |
10710 | # endif | |
10711 | #endif | |
10712 | ||
1d7c1841 GS |
10713 | ptr_table_store(PL_ptr_table, sstr, dstr); |
10714 | ||
10715 | /* clone */ | |
10716 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
10717 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
10718 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
10719 | ||
10720 | #ifdef DEBUGGING | |
10721 | if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx) | |
10722 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", | |
10723 | PL_watch_pvx, SvPVX(sstr)); | |
10724 | #endif | |
10725 | ||
9660f481 DM |
10726 | /* don't clone objects whose class has asked us not to */ |
10727 | if (SvOBJECT(sstr) && ! (SvFLAGS(SvSTASH(sstr)) & SVphv_CLONEABLE)) { | |
10728 | SvFLAGS(dstr) &= ~SVTYPEMASK; | |
10729 | SvOBJECT_off(dstr); | |
10730 | return dstr; | |
10731 | } | |
10732 | ||
1d7c1841 GS |
10733 | switch (SvTYPE(sstr)) { |
10734 | case SVt_NULL: | |
10735 | SvANY(dstr) = NULL; | |
10736 | break; | |
10737 | case SVt_IV: | |
339049b0 | 10738 | SvANY(dstr) = (XPVIV*)((char*)&(dstr->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
45977657 | 10739 | SvIV_set(dstr, SvIVX(sstr)); |
1d7c1841 GS |
10740 | break; |
10741 | case SVt_NV: | |
10742 | SvANY(dstr) = new_XNV(); | |
9d6ce603 | 10743 | SvNV_set(dstr, SvNVX(sstr)); |
1d7c1841 GS |
10744 | break; |
10745 | case SVt_RV: | |
339049b0 | 10746 | SvANY(dstr) = &(dstr->sv_u.svu_rv); |
83841fad | 10747 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10748 | break; |
10749 | case SVt_PV: | |
10750 | SvANY(dstr) = new_XPV(); | |
b162af07 SP |
10751 | SvCUR_set(dstr, SvCUR(sstr)); |
10752 | SvLEN_set(dstr, SvLEN(sstr)); | |
83841fad | 10753 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10754 | break; |
10755 | case SVt_PVIV: | |
10756 | SvANY(dstr) = new_XPVIV(); | |
b162af07 SP |
10757 | SvCUR_set(dstr, SvCUR(sstr)); |
10758 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10759 | SvIV_set(dstr, SvIVX(sstr)); |
83841fad | 10760 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10761 | break; |
10762 | case SVt_PVNV: | |
10763 | SvANY(dstr) = new_XPVNV(); | |
b162af07 SP |
10764 | SvCUR_set(dstr, SvCUR(sstr)); |
10765 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10766 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10767 | SvNV_set(dstr, SvNVX(sstr)); |
83841fad | 10768 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10769 | break; |
10770 | case SVt_PVMG: | |
10771 | SvANY(dstr) = new_XPVMG(); | |
b162af07 SP |
10772 | SvCUR_set(dstr, SvCUR(sstr)); |
10773 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10774 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10775 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10776 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10777 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10778 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10779 | break; |
10780 | case SVt_PVBM: | |
10781 | SvANY(dstr) = new_XPVBM(); | |
b162af07 SP |
10782 | SvCUR_set(dstr, SvCUR(sstr)); |
10783 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10784 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10785 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10786 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10787 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10788 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10789 | BmRARE(dstr) = BmRARE(sstr); |
10790 | BmUSEFUL(dstr) = BmUSEFUL(sstr); | |
10791 | BmPREVIOUS(dstr)= BmPREVIOUS(sstr); | |
10792 | break; | |
10793 | case SVt_PVLV: | |
10794 | SvANY(dstr) = new_XPVLV(); | |
b162af07 SP |
10795 | SvCUR_set(dstr, SvCUR(sstr)); |
10796 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10797 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10798 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10799 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10800 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10801 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10802 | LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */ |
10803 | LvTARGLEN(dstr) = LvTARGLEN(sstr); | |
dd28f7bb DM |
10804 | if (LvTYPE(sstr) == 't') /* for tie: unrefcnted fake (SV**) */ |
10805 | LvTARG(dstr) = dstr; | |
10806 | else if (LvTYPE(sstr) == 'T') /* for tie: fake HE */ | |
10807 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(sstr), 0, param); | |
10808 | else | |
10809 | LvTARG(dstr) = sv_dup_inc(LvTARG(sstr), param); | |
1d7c1841 GS |
10810 | LvTYPE(dstr) = LvTYPE(sstr); |
10811 | break; | |
10812 | case SVt_PVGV: | |
7fb37951 | 10813 | if (GvUNIQUE((GV*)sstr)) { |
5bd07a3d | 10814 | SV *share; |
59b40662 | 10815 | if ((share = gv_share(sstr, param))) { |
5bd07a3d DM |
10816 | del_SV(dstr); |
10817 | dstr = share; | |
37e20706 | 10818 | ptr_table_store(PL_ptr_table, sstr, dstr); |
5bd07a3d DM |
10819 | #if 0 |
10820 | PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n", | |
bfcb3514 | 10821 | HvNAME_get(GvSTASH(share)), GvNAME(share)); |
5bd07a3d DM |
10822 | #endif |
10823 | break; | |
10824 | } | |
10825 | } | |
1d7c1841 | 10826 | SvANY(dstr) = new_XPVGV(); |
b162af07 SP |
10827 | SvCUR_set(dstr, SvCUR(sstr)); |
10828 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10829 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10830 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10831 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10832 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10833 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10834 | GvNAMELEN(dstr) = GvNAMELEN(sstr); |
10835 | GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr)); | |
d2d73c3e | 10836 | GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr), param); |
1d7c1841 | 10837 | GvFLAGS(dstr) = GvFLAGS(sstr); |
d2d73c3e | 10838 | GvGP(dstr) = gp_dup(GvGP(sstr), param); |
1d7c1841 GS |
10839 | (void)GpREFCNT_inc(GvGP(dstr)); |
10840 | break; | |
10841 | case SVt_PVIO: | |
10842 | SvANY(dstr) = new_XPVIO(); | |
b162af07 SP |
10843 | SvCUR_set(dstr, SvCUR(sstr)); |
10844 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10845 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10846 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10847 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10848 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10849 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
a8fc9800 | 10850 | IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10851 | if (IoOFP(sstr) == IoIFP(sstr)) |
10852 | IoOFP(dstr) = IoIFP(dstr); | |
10853 | else | |
a8fc9800 | 10854 | IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10855 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
10856 | if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP)) | |
10857 | IoDIRP(dstr) = dirp_dup(IoDIRP(sstr)); | |
10858 | else | |
10859 | IoDIRP(dstr) = IoDIRP(sstr); | |
10860 | IoLINES(dstr) = IoLINES(sstr); | |
10861 | IoPAGE(dstr) = IoPAGE(sstr); | |
10862 | IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr); | |
10863 | IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr); | |
7a5fa8a2 | 10864 | if(IoFLAGS(sstr) & IOf_FAKE_DIRP) { |
5a37521b AB |
10865 | /* I have no idea why fake dirp (rsfps) |
10866 | should be treaded differently but otherwise | |
10867 | we end up with leaks -- sky*/ | |
10868 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(sstr), param); | |
10869 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(sstr), param); | |
10870 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(sstr), param); | |
10871 | } else { | |
10872 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr), param); | |
10873 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr), param); | |
10874 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr), param); | |
10875 | } | |
1d7c1841 | 10876 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr)); |
1d7c1841 | 10877 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr)); |
1d7c1841 | 10878 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr)); |
1d7c1841 GS |
10879 | IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr); |
10880 | IoTYPE(dstr) = IoTYPE(sstr); | |
10881 | IoFLAGS(dstr) = IoFLAGS(sstr); | |
10882 | break; | |
10883 | case SVt_PVAV: | |
10884 | SvANY(dstr) = new_XPVAV(); | |
b162af07 SP |
10885 | SvCUR_set(dstr, SvCUR(sstr)); |
10886 | SvLEN_set(dstr, SvLEN(sstr)); | |
b162af07 SP |
10887 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10888 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
1d7c1841 GS |
10889 | if (AvARRAY((AV*)sstr)) { |
10890 | SV **dst_ary, **src_ary; | |
10891 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10892 | ||
10893 | src_ary = AvARRAY((AV*)sstr); | |
10894 | Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*); | |
10895 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); | |
f880fe2f | 10896 | SvPV_set(dstr, (char*)dst_ary); |
1d7c1841 GS |
10897 | AvALLOC((AV*)dstr) = dst_ary; |
10898 | if (AvREAL((AV*)sstr)) { | |
10899 | while (items-- > 0) | |
d2d73c3e | 10900 | *dst_ary++ = sv_dup_inc(*src_ary++, param); |
1d7c1841 GS |
10901 | } |
10902 | else { | |
10903 | while (items-- > 0) | |
d2d73c3e | 10904 | *dst_ary++ = sv_dup(*src_ary++, param); |
1d7c1841 GS |
10905 | } |
10906 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10907 | while (items-- > 0) { | |
10908 | *dst_ary++ = &PL_sv_undef; | |
10909 | } | |
10910 | } | |
10911 | else { | |
f880fe2f | 10912 | SvPV_set(dstr, Nullch); |
1d7c1841 GS |
10913 | AvALLOC((AV*)dstr) = (SV**)NULL; |
10914 | } | |
10915 | break; | |
10916 | case SVt_PVHV: | |
10917 | SvANY(dstr) = new_XPVHV(); | |
b162af07 SP |
10918 | SvCUR_set(dstr, SvCUR(sstr)); |
10919 | SvLEN_set(dstr, SvLEN(sstr)); | |
94a66813 | 10920 | HvTOTALKEYS(dstr) = HvTOTALKEYS(sstr); |
b162af07 SP |
10921 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10922 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
bfcb3514 | 10923 | { |
bfcb3514 | 10924 | struct xpvhv_aux *aux = ((XPVHV *)SvANY(sstr))->xhv_aux; |
7423f6db | 10925 | HEK *hvname = 0; |
bfcb3514 NC |
10926 | |
10927 | if (aux) { | |
7423f6db NC |
10928 | I32 riter = aux->xhv_riter; |
10929 | ||
10930 | hvname = aux->xhv_name; | |
10931 | if (hvname || riter != -1) { | |
10932 | struct xpvhv_aux *d_aux; | |
10933 | ||
10934 | New(0, d_aux, 1, struct xpvhv_aux); | |
10935 | ||
10936 | d_aux->xhv_riter = riter; | |
10937 | d_aux->xhv_eiter = 0; | |
10938 | d_aux->xhv_name = hvname ? hek_dup(hvname, param) : hvname; | |
10939 | ||
10940 | ((XPVHV *)SvANY(dstr))->xhv_aux = d_aux; | |
10941 | } else { | |
10942 | ((XPVHV *)SvANY(dstr))->xhv_aux = 0; | |
10943 | } | |
10944 | } | |
10945 | else { | |
10946 | ((XPVHV *)SvANY(dstr))->xhv_aux = 0; | |
1d7c1841 | 10947 | } |
bfcb3514 NC |
10948 | if (HvARRAY((HV*)sstr)) { |
10949 | STRLEN i = 0; | |
10950 | XPVHV *dxhv = (XPVHV*)SvANY(dstr); | |
10951 | XPVHV *sxhv = (XPVHV*)SvANY(sstr); | |
7b2c381c NC |
10952 | char *darray; |
10953 | /* FIXME - surely this doesn't need to be zeroed? */ | |
10954 | Newz(0, darray, | |
bfcb3514 | 10955 | PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char); |
7b2c381c | 10956 | HvARRAY(dstr) = (HE**)darray; |
bfcb3514 | 10957 | while (i <= sxhv->xhv_max) { |
7b2c381c NC |
10958 | HvARRAY(dstr)[i] |
10959 | = he_dup(HvARRAY(sstr)[i], | |
bfcb3514 NC |
10960 | (bool)!!HvSHAREKEYS(sstr), param); |
10961 | ++i; | |
10962 | } | |
10963 | HvEITER_set(dstr, he_dup(HvEITER_get(sstr), | |
10964 | (bool)!!HvSHAREKEYS(sstr), param)); | |
10965 | } | |
10966 | else { | |
10967 | SvPV_set(dstr, Nullch); | |
10968 | HvEITER_set((HV*)dstr, (HE*)NULL); | |
10969 | } | |
10970 | /* Record stashes for possible cloning in Perl_clone(). */ | |
10971 | if(hvname) | |
10972 | av_push(param->stashes, dstr); | |
1d7c1841 | 10973 | } |
1d7c1841 GS |
10974 | break; |
10975 | case SVt_PVFM: | |
10976 | SvANY(dstr) = new_XPVFM(); | |
10977 | FmLINES(dstr) = FmLINES(sstr); | |
10978 | goto dup_pvcv; | |
10979 | /* NOTREACHED */ | |
10980 | case SVt_PVCV: | |
10981 | SvANY(dstr) = new_XPVCV(); | |
d2d73c3e | 10982 | dup_pvcv: |
b162af07 SP |
10983 | SvCUR_set(dstr, SvCUR(sstr)); |
10984 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10985 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10986 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10987 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10988 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10989 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
d2d73c3e | 10990 | CvSTASH(dstr) = hv_dup(CvSTASH(sstr), param); /* NOTE: not refcounted */ |
1d7c1841 | 10991 | CvSTART(dstr) = CvSTART(sstr); |
b34c0dd4 | 10992 | OP_REFCNT_LOCK; |
1d7c1841 | 10993 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr)); |
b34c0dd4 | 10994 | OP_REFCNT_UNLOCK; |
1d7c1841 GS |
10995 | CvXSUB(dstr) = CvXSUB(sstr); |
10996 | CvXSUBANY(dstr) = CvXSUBANY(sstr); | |
01485f8b DM |
10997 | if (CvCONST(sstr)) { |
10998 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(sstr)) ? | |
10999 | SvREFCNT_inc(CvXSUBANY(sstr).any_ptr) : | |
8f77bfdb | 11000 | sv_dup_inc((SV *)CvXSUBANY(sstr).any_ptr, param); |
01485f8b | 11001 | } |
b23f1a86 DM |
11002 | /* don't dup if copying back - CvGV isn't refcounted, so the |
11003 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
11004 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
11005 | Nullgv : gv_dup(CvGV(sstr), param) ; | |
d2d73c3e AB |
11006 | if (param->flags & CLONEf_COPY_STACKS) { |
11007 | CvDEPTH(dstr) = CvDEPTH(sstr); | |
11008 | } else { | |
11009 | CvDEPTH(dstr) = 0; | |
11010 | } | |
dd2155a4 | 11011 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); |
7dafbf52 DM |
11012 | CvOUTSIDE_SEQ(dstr) = CvOUTSIDE_SEQ(sstr); |
11013 | CvOUTSIDE(dstr) = | |
11014 | CvWEAKOUTSIDE(sstr) | |
11015 | ? cv_dup( CvOUTSIDE(sstr), param) | |
11016 | : cv_dup_inc(CvOUTSIDE(sstr), param); | |
1d7c1841 | 11017 | CvFLAGS(dstr) = CvFLAGS(sstr); |
54356c7d | 11018 | CvFILE(dstr) = CvXSUB(sstr) ? CvFILE(sstr) : SAVEPV(CvFILE(sstr)); |
1d7c1841 GS |
11019 | break; |
11020 | default: | |
c803eecc | 11021 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", (IV)SvTYPE(sstr)); |
1d7c1841 GS |
11022 | break; |
11023 | } | |
11024 | ||
11025 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
11026 | ++PL_sv_objcount; | |
11027 | ||
11028 | return dstr; | |
d2d73c3e | 11029 | } |
1d7c1841 | 11030 | |
645c22ef DM |
11031 | /* duplicate a context */ |
11032 | ||
1d7c1841 | 11033 | PERL_CONTEXT * |
a8fc9800 | 11034 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
11035 | { |
11036 | PERL_CONTEXT *ncxs; | |
11037 | ||
11038 | if (!cxs) | |
11039 | return (PERL_CONTEXT*)NULL; | |
11040 | ||
11041 | /* look for it in the table first */ | |
11042 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
11043 | if (ncxs) | |
11044 | return ncxs; | |
11045 | ||
11046 | /* create anew and remember what it is */ | |
11047 | Newz(56, ncxs, max + 1, PERL_CONTEXT); | |
11048 | ptr_table_store(PL_ptr_table, cxs, ncxs); | |
11049 | ||
11050 | while (ix >= 0) { | |
11051 | PERL_CONTEXT *cx = &cxs[ix]; | |
11052 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
11053 | ncx->cx_type = cx->cx_type; | |
11054 | if (CxTYPE(cx) == CXt_SUBST) { | |
11055 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
11056 | } | |
11057 | else { | |
11058 | ncx->blk_oldsp = cx->blk_oldsp; | |
11059 | ncx->blk_oldcop = cx->blk_oldcop; | |
1d7c1841 GS |
11060 | ncx->blk_oldmarksp = cx->blk_oldmarksp; |
11061 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
11062 | ncx->blk_oldpm = cx->blk_oldpm; | |
11063 | ncx->blk_gimme = cx->blk_gimme; | |
11064 | switch (CxTYPE(cx)) { | |
11065 | case CXt_SUB: | |
11066 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
11067 | ? cv_dup_inc(cx->blk_sub.cv, param) |
11068 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 11069 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 11070 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 11071 | : Nullav); |
d2d73c3e | 11072 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
11073 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
11074 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
11075 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
f39bc417 | 11076 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
11077 | break; |
11078 | case CXt_EVAL: | |
11079 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
11080 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 11081 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 11082 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 11083 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
f39bc417 | 11084 | ncx->blk_eval.retop = cx->blk_eval.retop; |
1d7c1841 GS |
11085 | break; |
11086 | case CXt_LOOP: | |
11087 | ncx->blk_loop.label = cx->blk_loop.label; | |
11088 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
11089 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
11090 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
11091 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
11092 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
11093 | ? cx->blk_loop.iterdata | |
d2d73c3e | 11094 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
11095 | ncx->blk_loop.oldcomppad |
11096 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
11097 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
11098 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
11099 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
11100 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
11101 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
11102 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
11103 | break; | |
11104 | case CXt_FORMAT: | |
d2d73c3e AB |
11105 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
11106 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
11107 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 | 11108 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
f39bc417 | 11109 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
11110 | break; |
11111 | case CXt_BLOCK: | |
11112 | case CXt_NULL: | |
11113 | break; | |
11114 | } | |
11115 | } | |
11116 | --ix; | |
11117 | } | |
11118 | return ncxs; | |
11119 | } | |
11120 | ||
645c22ef DM |
11121 | /* duplicate a stack info structure */ |
11122 | ||
1d7c1841 | 11123 | PERL_SI * |
a8fc9800 | 11124 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
11125 | { |
11126 | PERL_SI *nsi; | |
11127 | ||
11128 | if (!si) | |
11129 | return (PERL_SI*)NULL; | |
11130 | ||
11131 | /* look for it in the table first */ | |
11132 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
11133 | if (nsi) | |
11134 | return nsi; | |
11135 | ||
11136 | /* create anew and remember what it is */ | |
11137 | Newz(56, nsi, 1, PERL_SI); | |
11138 | ptr_table_store(PL_ptr_table, si, nsi); | |
11139 | ||
d2d73c3e | 11140 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
11141 | nsi->si_cxix = si->si_cxix; |
11142 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 11143 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 11144 | nsi->si_type = si->si_type; |
d2d73c3e AB |
11145 | nsi->si_prev = si_dup(si->si_prev, param); |
11146 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
11147 | nsi->si_markoff = si->si_markoff; |
11148 | ||
11149 | return nsi; | |
11150 | } | |
11151 | ||
11152 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
11153 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
11154 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
11155 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
11156 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
11157 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
11158 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
11159 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
11160 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
11161 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
11162 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
11163 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
11164 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
11165 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
11166 | ||
11167 | /* XXXXX todo */ | |
11168 | #define pv_dup_inc(p) SAVEPV(p) | |
11169 | #define pv_dup(p) SAVEPV(p) | |
11170 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
11171 | ||
645c22ef DM |
11172 | /* map any object to the new equivent - either something in the |
11173 | * ptr table, or something in the interpreter structure | |
11174 | */ | |
11175 | ||
1d7c1841 GS |
11176 | void * |
11177 | Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl) | |
11178 | { | |
11179 | void *ret; | |
11180 | ||
11181 | if (!v) | |
11182 | return (void*)NULL; | |
11183 | ||
11184 | /* look for it in the table first */ | |
11185 | ret = ptr_table_fetch(PL_ptr_table, v); | |
11186 | if (ret) | |
11187 | return ret; | |
11188 | ||
11189 | /* see if it is part of the interpreter structure */ | |
11190 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 11191 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 11192 | else { |
1d7c1841 | 11193 | ret = v; |
05ec9bb3 | 11194 | } |
1d7c1841 GS |
11195 | |
11196 | return ret; | |
11197 | } | |
11198 | ||
645c22ef DM |
11199 | /* duplicate the save stack */ |
11200 | ||
1d7c1841 | 11201 | ANY * |
a8fc9800 | 11202 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 GS |
11203 | { |
11204 | ANY *ss = proto_perl->Tsavestack; | |
11205 | I32 ix = proto_perl->Tsavestack_ix; | |
11206 | I32 max = proto_perl->Tsavestack_max; | |
11207 | ANY *nss; | |
11208 | SV *sv; | |
11209 | GV *gv; | |
11210 | AV *av; | |
11211 | HV *hv; | |
11212 | void* ptr; | |
11213 | int intval; | |
11214 | long longval; | |
11215 | GP *gp; | |
11216 | IV iv; | |
11217 | I32 i; | |
c4e33207 | 11218 | char *c = NULL; |
1d7c1841 | 11219 | void (*dptr) (void*); |
acfe0abc | 11220 | void (*dxptr) (pTHX_ void*); |
e977893f | 11221 | OP *o; |
1d7c1841 GS |
11222 | |
11223 | Newz(54, nss, max, ANY); | |
11224 | ||
11225 | while (ix > 0) { | |
11226 | i = POPINT(ss,ix); | |
11227 | TOPINT(nss,ix) = i; | |
11228 | switch (i) { | |
11229 | case SAVEt_ITEM: /* normal string */ | |
11230 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11231 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11232 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11233 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11234 | break; |
11235 | case SAVEt_SV: /* scalar reference */ | |
11236 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11237 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11238 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11239 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 11240 | break; |
f4dd75d9 GS |
11241 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
11242 | c = (char*)POPPTR(ss,ix); | |
11243 | TOPPTR(nss,ix) = pv_dup(c); | |
11244 | ptr = POPPTR(ss,ix); | |
11245 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11246 | break; | |
05ec9bb3 NIS |
11247 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
11248 | c = (char*)POPPTR(ss,ix); | |
11249 | TOPPTR(nss,ix) = savesharedpv(c); | |
11250 | ptr = POPPTR(ss,ix); | |
11251 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11252 | break; | |
1d7c1841 GS |
11253 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
11254 | case SAVEt_SVREF: /* scalar reference */ | |
11255 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11256 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11257 | ptr = POPPTR(ss,ix); |
11258 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
11259 | break; | |
11260 | case SAVEt_AV: /* array reference */ | |
11261 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11262 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 11263 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11264 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11265 | break; |
11266 | case SAVEt_HV: /* hash reference */ | |
11267 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11268 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 11269 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11270 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11271 | break; |
11272 | case SAVEt_INT: /* int reference */ | |
11273 | ptr = POPPTR(ss,ix); | |
11274 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11275 | intval = (int)POPINT(ss,ix); | |
11276 | TOPINT(nss,ix) = intval; | |
11277 | break; | |
11278 | case SAVEt_LONG: /* long reference */ | |
11279 | ptr = POPPTR(ss,ix); | |
11280 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11281 | longval = (long)POPLONG(ss,ix); | |
11282 | TOPLONG(nss,ix) = longval; | |
11283 | break; | |
11284 | case SAVEt_I32: /* I32 reference */ | |
11285 | case SAVEt_I16: /* I16 reference */ | |
11286 | case SAVEt_I8: /* I8 reference */ | |
11287 | ptr = POPPTR(ss,ix); | |
11288 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11289 | i = POPINT(ss,ix); | |
11290 | TOPINT(nss,ix) = i; | |
11291 | break; | |
11292 | case SAVEt_IV: /* IV reference */ | |
11293 | ptr = POPPTR(ss,ix); | |
11294 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11295 | iv = POPIV(ss,ix); | |
11296 | TOPIV(nss,ix) = iv; | |
11297 | break; | |
11298 | case SAVEt_SPTR: /* SV* reference */ | |
11299 | ptr = POPPTR(ss,ix); | |
11300 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11301 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11302 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
11303 | break; |
11304 | case SAVEt_VPTR: /* random* reference */ | |
11305 | ptr = POPPTR(ss,ix); | |
11306 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11307 | ptr = POPPTR(ss,ix); | |
11308 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11309 | break; | |
11310 | case SAVEt_PPTR: /* char* reference */ | |
11311 | ptr = POPPTR(ss,ix); | |
11312 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11313 | c = (char*)POPPTR(ss,ix); | |
11314 | TOPPTR(nss,ix) = pv_dup(c); | |
11315 | break; | |
11316 | case SAVEt_HPTR: /* HV* reference */ | |
11317 | ptr = POPPTR(ss,ix); | |
11318 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11319 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11320 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
11321 | break; |
11322 | case SAVEt_APTR: /* AV* reference */ | |
11323 | ptr = POPPTR(ss,ix); | |
11324 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11325 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11326 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
11327 | break; |
11328 | case SAVEt_NSTAB: | |
11329 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 11330 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11331 | break; |
11332 | case SAVEt_GP: /* scalar reference */ | |
11333 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 11334 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
11335 | (void)GpREFCNT_inc(gp); |
11336 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 11337 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
11338 | c = (char*)POPPTR(ss,ix); |
11339 | TOPPTR(nss,ix) = pv_dup(c); | |
11340 | iv = POPIV(ss,ix); | |
11341 | TOPIV(nss,ix) = iv; | |
11342 | iv = POPIV(ss,ix); | |
11343 | TOPIV(nss,ix) = iv; | |
11344 | break; | |
11345 | case SAVEt_FREESV: | |
26d9b02f | 11346 | case SAVEt_MORTALIZESV: |
1d7c1841 | 11347 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11348 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11349 | break; |
11350 | case SAVEt_FREEOP: | |
11351 | ptr = POPPTR(ss,ix); | |
11352 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
11353 | /* these are assumed to be refcounted properly */ | |
11354 | switch (((OP*)ptr)->op_type) { | |
11355 | case OP_LEAVESUB: | |
11356 | case OP_LEAVESUBLV: | |
11357 | case OP_LEAVEEVAL: | |
11358 | case OP_LEAVE: | |
11359 | case OP_SCOPE: | |
11360 | case OP_LEAVEWRITE: | |
e977893f GS |
11361 | TOPPTR(nss,ix) = ptr; |
11362 | o = (OP*)ptr; | |
11363 | OpREFCNT_inc(o); | |
1d7c1841 GS |
11364 | break; |
11365 | default: | |
11366 | TOPPTR(nss,ix) = Nullop; | |
11367 | break; | |
11368 | } | |
11369 | } | |
11370 | else | |
11371 | TOPPTR(nss,ix) = Nullop; | |
11372 | break; | |
11373 | case SAVEt_FREEPV: | |
11374 | c = (char*)POPPTR(ss,ix); | |
11375 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11376 | break; | |
11377 | case SAVEt_CLEARSV: | |
11378 | longval = POPLONG(ss,ix); | |
11379 | TOPLONG(nss,ix) = longval; | |
11380 | break; | |
11381 | case SAVEt_DELETE: | |
11382 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11383 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11384 | c = (char*)POPPTR(ss,ix); |
11385 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11386 | i = POPINT(ss,ix); | |
11387 | TOPINT(nss,ix) = i; | |
11388 | break; | |
11389 | case SAVEt_DESTRUCTOR: | |
11390 | ptr = POPPTR(ss,ix); | |
11391 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11392 | dptr = POPDPTR(ss,ix); | |
ef75a179 | 11393 | TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl); |
1d7c1841 GS |
11394 | break; |
11395 | case SAVEt_DESTRUCTOR_X: | |
11396 | ptr = POPPTR(ss,ix); | |
11397 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11398 | dxptr = POPDXPTR(ss,ix); | |
acfe0abc | 11399 | TOPDXPTR(nss,ix) = (void (*)(pTHX_ void*))any_dup((void *)dxptr, proto_perl); |
1d7c1841 GS |
11400 | break; |
11401 | case SAVEt_REGCONTEXT: | |
11402 | case SAVEt_ALLOC: | |
11403 | i = POPINT(ss,ix); | |
11404 | TOPINT(nss,ix) = i; | |
11405 | ix -= i; | |
11406 | break; | |
11407 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
11408 | i = POPINT(ss,ix); | |
11409 | TOPINT(nss,ix) = i; | |
11410 | break; | |
11411 | case SAVEt_AELEM: /* array element */ | |
11412 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11413 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11414 | i = POPINT(ss,ix); |
11415 | TOPINT(nss,ix) = i; | |
11416 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11417 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
11418 | break; |
11419 | case SAVEt_HELEM: /* hash element */ | |
11420 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11421 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11422 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11423 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11424 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 11425 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11426 | break; |
11427 | case SAVEt_OP: | |
11428 | ptr = POPPTR(ss,ix); | |
11429 | TOPPTR(nss,ix) = ptr; | |
11430 | break; | |
11431 | case SAVEt_HINTS: | |
11432 | i = POPINT(ss,ix); | |
11433 | TOPINT(nss,ix) = i; | |
11434 | break; | |
c4410b1b GS |
11435 | case SAVEt_COMPPAD: |
11436 | av = (AV*)POPPTR(ss,ix); | |
58ed4fbe | 11437 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 11438 | break; |
c3564e5c GS |
11439 | case SAVEt_PADSV: |
11440 | longval = (long)POPLONG(ss,ix); | |
11441 | TOPLONG(nss,ix) = longval; | |
11442 | ptr = POPPTR(ss,ix); | |
11443 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11444 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11445 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 11446 | break; |
a1bb4754 | 11447 | case SAVEt_BOOL: |
38d8b13e | 11448 | ptr = POPPTR(ss,ix); |
b9609c01 | 11449 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 11450 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 11451 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 11452 | break; |
8bd2680e MHM |
11453 | case SAVEt_SET_SVFLAGS: |
11454 | i = POPINT(ss,ix); | |
11455 | TOPINT(nss,ix) = i; | |
11456 | i = POPINT(ss,ix); | |
11457 | TOPINT(nss,ix) = i; | |
11458 | sv = (SV*)POPPTR(ss,ix); | |
11459 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
11460 | break; | |
1d7c1841 GS |
11461 | default: |
11462 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
11463 | } | |
11464 | } | |
11465 | ||
11466 | return nss; | |
11467 | } | |
11468 | ||
9660f481 DM |
11469 | |
11470 | /* if sv is a stash, call $class->CLONE_SKIP(), and set the SVphv_CLONEABLE | |
11471 | * flag to the result. This is done for each stash before cloning starts, | |
11472 | * so we know which stashes want their objects cloned */ | |
11473 | ||
11474 | static void | |
11475 | do_mark_cloneable_stash(pTHX_ SV *sv) | |
11476 | { | |
bfcb3514 NC |
11477 | const char *hvname = HvNAME_get((HV*)sv); |
11478 | if (hvname) { | |
9660f481 | 11479 | GV* cloner = gv_fetchmethod_autoload((HV*)sv, "CLONE_SKIP", 0); |
7423f6db | 11480 | STRLEN len = HvNAMELEN_get((HV*)sv); |
9660f481 DM |
11481 | SvFLAGS(sv) |= SVphv_CLONEABLE; /* clone objects by default */ |
11482 | if (cloner && GvCV(cloner)) { | |
11483 | dSP; | |
11484 | UV status; | |
11485 | ||
11486 | ENTER; | |
11487 | SAVETMPS; | |
11488 | PUSHMARK(SP); | |
7423f6db | 11489 | XPUSHs(sv_2mortal(newSVpvn(hvname, len))); |
9660f481 DM |
11490 | PUTBACK; |
11491 | call_sv((SV*)GvCV(cloner), G_SCALAR); | |
11492 | SPAGAIN; | |
11493 | status = POPu; | |
11494 | PUTBACK; | |
11495 | FREETMPS; | |
11496 | LEAVE; | |
11497 | if (status) | |
11498 | SvFLAGS(sv) &= ~SVphv_CLONEABLE; | |
11499 | } | |
11500 | } | |
11501 | } | |
11502 | ||
11503 | ||
11504 | ||
645c22ef DM |
11505 | /* |
11506 | =for apidoc perl_clone | |
11507 | ||
11508 | Create and return a new interpreter by cloning the current one. | |
11509 | ||
4be49ee6 | 11510 | perl_clone takes these flags as parameters: |
6a78b4db | 11511 | |
7a5fa8a2 NIS |
11512 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, |
11513 | without it we only clone the data and zero the stacks, | |
11514 | with it we copy the stacks and the new perl interpreter is | |
11515 | ready to run at the exact same point as the previous one. | |
11516 | The pseudo-fork code uses COPY_STACKS while the | |
6a78b4db AB |
11517 | threads->new doesn't. |
11518 | ||
11519 | CLONEf_KEEP_PTR_TABLE | |
7a5fa8a2 NIS |
11520 | perl_clone keeps a ptr_table with the pointer of the old |
11521 | variable as a key and the new variable as a value, | |
11522 | this allows it to check if something has been cloned and not | |
11523 | clone it again but rather just use the value and increase the | |
11524 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
11525 | the ptr_table using the function | |
11526 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
11527 | reason to keep it around is if you want to dup some of your own | |
11528 | variable who are outside the graph perl scans, example of this | |
6a78b4db AB |
11529 | code is in threads.xs create |
11530 | ||
11531 | CLONEf_CLONE_HOST | |
7a5fa8a2 NIS |
11532 | This is a win32 thing, it is ignored on unix, it tells perls |
11533 | win32host code (which is c++) to clone itself, this is needed on | |
11534 | win32 if you want to run two threads at the same time, | |
11535 | if you just want to do some stuff in a separate perl interpreter | |
11536 | and then throw it away and return to the original one, | |
6a78b4db AB |
11537 | you don't need to do anything. |
11538 | ||
645c22ef DM |
11539 | =cut |
11540 | */ | |
11541 | ||
11542 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
11543 | EXTERN_C PerlInterpreter * |
11544 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 11545 | |
1d7c1841 GS |
11546 | PerlInterpreter * |
11547 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
11548 | { | |
27da23d5 | 11549 | dVAR; |
1d7c1841 | 11550 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
11551 | |
11552 | /* perlhost.h so we need to call into it | |
11553 | to clone the host, CPerlHost should have a c interface, sky */ | |
11554 | ||
11555 | if (flags & CLONEf_CLONE_HOST) { | |
11556 | return perl_clone_host(proto_perl,flags); | |
11557 | } | |
11558 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
11559 | proto_perl->IMem, |
11560 | proto_perl->IMemShared, | |
11561 | proto_perl->IMemParse, | |
11562 | proto_perl->IEnv, | |
11563 | proto_perl->IStdIO, | |
11564 | proto_perl->ILIO, | |
11565 | proto_perl->IDir, | |
11566 | proto_perl->ISock, | |
11567 | proto_perl->IProc); | |
11568 | } | |
11569 | ||
11570 | PerlInterpreter * | |
11571 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
11572 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
11573 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
11574 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
11575 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
11576 | struct IPerlProc* ipP) | |
11577 | { | |
11578 | /* XXX many of the string copies here can be optimized if they're | |
11579 | * constants; they need to be allocated as common memory and just | |
11580 | * their pointers copied. */ | |
11581 | ||
11582 | IV i; | |
64aa0685 GS |
11583 | CLONE_PARAMS clone_params; |
11584 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 11585 | |
1d7c1841 | 11586 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
9660f481 DM |
11587 | /* for each stash, determine whether its objects should be cloned */ |
11588 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 11589 | PERL_SET_THX(my_perl); |
1d7c1841 | 11590 | |
acfe0abc | 11591 | # ifdef DEBUGGING |
a4530404 | 11592 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11593 | PL_op = Nullop; |
c008732b | 11594 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11595 | PL_markstack = 0; |
11596 | PL_scopestack = 0; | |
11597 | PL_savestack = 0; | |
22f7c9c9 JH |
11598 | PL_savestack_ix = 0; |
11599 | PL_savestack_max = -1; | |
66fe0623 | 11600 | PL_sig_pending = 0; |
25596c82 | 11601 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 11602 | # else /* !DEBUGGING */ |
1d7c1841 | 11603 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 11604 | # endif /* DEBUGGING */ |
1d7c1841 GS |
11605 | |
11606 | /* host pointers */ | |
11607 | PL_Mem = ipM; | |
11608 | PL_MemShared = ipMS; | |
11609 | PL_MemParse = ipMP; | |
11610 | PL_Env = ipE; | |
11611 | PL_StdIO = ipStd; | |
11612 | PL_LIO = ipLIO; | |
11613 | PL_Dir = ipD; | |
11614 | PL_Sock = ipS; | |
11615 | PL_Proc = ipP; | |
1d7c1841 GS |
11616 | #else /* !PERL_IMPLICIT_SYS */ |
11617 | IV i; | |
64aa0685 GS |
11618 | CLONE_PARAMS clone_params; |
11619 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 11620 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
9660f481 DM |
11621 | /* for each stash, determine whether its objects should be cloned */ |
11622 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 11623 | PERL_SET_THX(my_perl); |
1d7c1841 GS |
11624 | |
11625 | # ifdef DEBUGGING | |
a4530404 | 11626 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11627 | PL_op = Nullop; |
c008732b | 11628 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11629 | PL_markstack = 0; |
11630 | PL_scopestack = 0; | |
11631 | PL_savestack = 0; | |
22f7c9c9 JH |
11632 | PL_savestack_ix = 0; |
11633 | PL_savestack_max = -1; | |
66fe0623 | 11634 | PL_sig_pending = 0; |
25596c82 | 11635 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
11636 | # else /* !DEBUGGING */ |
11637 | Zero(my_perl, 1, PerlInterpreter); | |
11638 | # endif /* DEBUGGING */ | |
11639 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 11640 | param->flags = flags; |
59b40662 | 11641 | param->proto_perl = proto_perl; |
1d7c1841 GS |
11642 | |
11643 | /* arena roots */ | |
612f20c3 | 11644 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 11645 | PL_xnv_root = NULL; |
612f20c3 | 11646 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 11647 | PL_xpv_root = NULL; |
612f20c3 | 11648 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 11649 | PL_xpviv_root = NULL; |
612f20c3 | 11650 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 11651 | PL_xpvnv_root = NULL; |
612f20c3 | 11652 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 11653 | PL_xpvcv_root = NULL; |
612f20c3 | 11654 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 11655 | PL_xpvav_root = NULL; |
612f20c3 | 11656 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 11657 | PL_xpvhv_root = NULL; |
612f20c3 | 11658 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 11659 | PL_xpvmg_root = NULL; |
7552b40b DM |
11660 | PL_xpvgv_arenaroot = NULL; |
11661 | PL_xpvgv_root = NULL; | |
612f20c3 | 11662 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 11663 | PL_xpvlv_root = NULL; |
612f20c3 | 11664 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 11665 | PL_xpvbm_root = NULL; |
612f20c3 | 11666 | PL_he_arenaroot = NULL; |
1d7c1841 | 11667 | PL_he_root = NULL; |
892b45be | 11668 | #if defined(USE_ITHREADS) |
32e691d0 NC |
11669 | PL_pte_arenaroot = NULL; |
11670 | PL_pte_root = NULL; | |
892b45be | 11671 | #endif |
1d7c1841 GS |
11672 | PL_nice_chunk = NULL; |
11673 | PL_nice_chunk_size = 0; | |
11674 | PL_sv_count = 0; | |
11675 | PL_sv_objcount = 0; | |
11676 | PL_sv_root = Nullsv; | |
11677 | PL_sv_arenaroot = Nullsv; | |
11678 | ||
11679 | PL_debug = proto_perl->Idebug; | |
11680 | ||
8df990a8 NC |
11681 | PL_hash_seed = proto_perl->Ihash_seed; |
11682 | PL_rehash_seed = proto_perl->Irehash_seed; | |
11683 | ||
e5dd39fc | 11684 | #ifdef USE_REENTRANT_API |
68853529 SB |
11685 | /* XXX: things like -Dm will segfault here in perlio, but doing |
11686 | * PERL_SET_CONTEXT(proto_perl); | |
11687 | * breaks too many other things | |
11688 | */ | |
59bd0823 | 11689 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
11690 | #endif |
11691 | ||
1d7c1841 GS |
11692 | /* create SV map for pointer relocation */ |
11693 | PL_ptr_table = ptr_table_new(); | |
c21d1a0f NC |
11694 | /* and one for finding shared hash keys quickly */ |
11695 | PL_shared_hek_table = ptr_table_new(); | |
1d7c1841 GS |
11696 | |
11697 | /* initialize these special pointers as early as possible */ | |
11698 | SvANY(&PL_sv_undef) = NULL; | |
11699 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
11700 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
11701 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
11702 | ||
1d7c1841 | 11703 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 | 11704 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
0309f36e NC |
11705 | SvFLAGS(&PL_sv_no) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11706 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 11707 | SvPV_set(&PL_sv_no, SAVEPVN(PL_No, 0)); |
b162af07 SP |
11708 | SvCUR_set(&PL_sv_no, 0); |
11709 | SvLEN_set(&PL_sv_no, 1); | |
45977657 | 11710 | SvIV_set(&PL_sv_no, 0); |
9d6ce603 | 11711 | SvNV_set(&PL_sv_no, 0); |
1d7c1841 GS |
11712 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); |
11713 | ||
1d7c1841 | 11714 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 | 11715 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
0309f36e NC |
11716 | SvFLAGS(&PL_sv_yes) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11717 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 11718 | SvPV_set(&PL_sv_yes, SAVEPVN(PL_Yes, 1)); |
b162af07 SP |
11719 | SvCUR_set(&PL_sv_yes, 1); |
11720 | SvLEN_set(&PL_sv_yes, 2); | |
45977657 | 11721 | SvIV_set(&PL_sv_yes, 1); |
9d6ce603 | 11722 | SvNV_set(&PL_sv_yes, 1); |
1d7c1841 GS |
11723 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); |
11724 | ||
05ec9bb3 | 11725 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
11726 | PL_strtab = newHV(); |
11727 | HvSHAREKEYS_off(PL_strtab); | |
c4a9c09d | 11728 | hv_ksplit(PL_strtab, HvTOTALKEYS(proto_perl->Istrtab)); |
1d7c1841 GS |
11729 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); |
11730 | ||
05ec9bb3 NIS |
11731 | PL_compiling = proto_perl->Icompiling; |
11732 | ||
11733 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
11734 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
11735 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
11736 | ||
11737 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
11738 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
11739 | ||
1d7c1841 GS |
11740 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
11741 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 11742 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 11743 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 11744 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
11745 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
11746 | ||
11747 | /* pseudo environmental stuff */ | |
11748 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 11749 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 11750 | |
d2d73c3e AB |
11751 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
11752 | ||
a1ea730d | 11753 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
11754 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
11755 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 11756 | #endif |
d2d73c3e AB |
11757 | |
11758 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
11759 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
11760 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 11761 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
11762 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
11763 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
11764 | |
11765 | /* switches */ | |
11766 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 11767 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
11768 | PL_localpatches = proto_perl->Ilocalpatches; |
11769 | PL_splitstr = proto_perl->Isplitstr; | |
11770 | PL_preprocess = proto_perl->Ipreprocess; | |
11771 | PL_minus_n = proto_perl->Iminus_n; | |
11772 | PL_minus_p = proto_perl->Iminus_p; | |
11773 | PL_minus_l = proto_perl->Iminus_l; | |
11774 | PL_minus_a = proto_perl->Iminus_a; | |
11775 | PL_minus_F = proto_perl->Iminus_F; | |
11776 | PL_doswitches = proto_perl->Idoswitches; | |
11777 | PL_dowarn = proto_perl->Idowarn; | |
11778 | PL_doextract = proto_perl->Idoextract; | |
11779 | PL_sawampersand = proto_perl->Isawampersand; | |
11780 | PL_unsafe = proto_perl->Iunsafe; | |
11781 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 11782 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
11783 | PL_perldb = proto_perl->Iperldb; |
11784 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 11785 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
11786 | |
11787 | /* magical thingies */ | |
11788 | /* XXX time(&PL_basetime) when asked for? */ | |
11789 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 11790 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
11791 | |
11792 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
11793 | PL_multiline = proto_perl->Imultiline; | |
11794 | PL_statusvalue = proto_perl->Istatusvalue; | |
11795 | #ifdef VMS | |
11796 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
11797 | #endif | |
0a378802 | 11798 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 11799 | |
4a4c6fe3 | 11800 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
11801 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
11802 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 11803 | |
d2f185dc AMS |
11804 | /* Clone the regex array */ |
11805 | PL_regex_padav = newAV(); | |
11806 | { | |
a3b680e6 | 11807 | const I32 len = av_len((AV*)proto_perl->Iregex_padav); |
d2f185dc | 11808 | SV** regexen = AvARRAY((AV*)proto_perl->Iregex_padav); |
0f95fc41 AB |
11809 | av_push(PL_regex_padav, |
11810 | sv_dup_inc(regexen[0],param)); | |
11811 | for(i = 1; i <= len; i++) { | |
11812 | if(SvREPADTMP(regexen[i])) { | |
11813 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 11814 | } else { |
0f95fc41 AB |
11815 | av_push(PL_regex_padav, |
11816 | SvREFCNT_inc( | |
8cf8f3d1 | 11817 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 11818 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
11819 | )); |
11820 | } | |
d2f185dc AMS |
11821 | } |
11822 | } | |
11823 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 11824 | |
1d7c1841 | 11825 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
11826 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
11827 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11828 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11829 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11830 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11831 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
11832 | |
11833 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 11834 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
11835 | |
11836 | /* shortcuts to misc objects */ | |
d2d73c3e | 11837 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
11838 | |
11839 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
11840 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
11841 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11842 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11843 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11844 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11845 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 11846 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
11847 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
11848 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
11849 | |
11850 | /* symbol tables */ | |
d2d73c3e AB |
11851 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
11852 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
11853 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
11854 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11855 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11856 | ||
11857 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 11858 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 11859 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
11860 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11861 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11862 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
11863 | |
11864 | PL_sub_generation = proto_perl->Isub_generation; | |
11865 | ||
11866 | /* funky return mechanisms */ | |
11867 | PL_forkprocess = proto_perl->Iforkprocess; | |
11868 | ||
11869 | /* subprocess state */ | |
d2d73c3e | 11870 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
11871 | |
11872 | /* internal state */ | |
11873 | PL_tainting = proto_perl->Itainting; | |
7135f00b | 11874 | PL_taint_warn = proto_perl->Itaint_warn; |
1d7c1841 GS |
11875 | PL_maxo = proto_perl->Imaxo; |
11876 | if (proto_perl->Iop_mask) | |
11877 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11878 | else | |
11879 | PL_op_mask = Nullch; | |
06492da6 | 11880 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
11881 | |
11882 | /* current interpreter roots */ | |
d2d73c3e | 11883 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
11884 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
11885 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 11886 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
11887 | PL_eval_start = proto_perl->Ieval_start; |
11888 | ||
11889 | /* runtime control stuff */ | |
11890 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11891 | PL_copline = proto_perl->Icopline; | |
11892 | ||
11893 | PL_filemode = proto_perl->Ifilemode; | |
11894 | PL_lastfd = proto_perl->Ilastfd; | |
11895 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11896 | PL_Argv = NULL; | |
11897 | PL_Cmd = Nullch; | |
11898 | PL_gensym = proto_perl->Igensym; | |
11899 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 11900 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
11901 | PL_laststatval = proto_perl->Ilaststatval; |
11902 | PL_laststype = proto_perl->Ilaststype; | |
11903 | PL_mess_sv = Nullsv; | |
11904 | ||
d2d73c3e | 11905 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
11906 | PL_ofmt = SAVEPV(proto_perl->Iofmt); |
11907 | ||
11908 | /* interpreter atexit processing */ | |
11909 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11910 | if (PL_exitlistlen) { | |
11911 | New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11912 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11913 | } | |
11914 | else | |
11915 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 11916 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
11917 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
11918 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
11919 | |
11920 | PL_profiledata = NULL; | |
a8fc9800 | 11921 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 11922 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 11923 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 11924 | |
d2d73c3e | 11925 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
11926 | |
11927 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
11928 | |
11929 | #ifdef HAVE_INTERP_INTERN | |
11930 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11931 | #endif | |
11932 | ||
11933 | /* more statics moved here */ | |
11934 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 11935 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
11936 | |
11937 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
11938 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
11939 | ||
11940 | PL_uid = proto_perl->Iuid; | |
11941 | PL_euid = proto_perl->Ieuid; | |
11942 | PL_gid = proto_perl->Igid; | |
11943 | PL_egid = proto_perl->Iegid; | |
11944 | PL_nomemok = proto_perl->Inomemok; | |
11945 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
11946 | PL_evalseq = proto_perl->Ievalseq; |
11947 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11948 | PL_origalen = proto_perl->Iorigalen; | |
11949 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
11950 | PL_osname = SAVEPV(proto_perl->Iosname); | |
5c728af0 | 11951 | PL_sh_path_compat = proto_perl->Ish_path_compat; /* XXX never deallocated */ |
1d7c1841 GS |
11952 | PL_sighandlerp = proto_perl->Isighandlerp; |
11953 | ||
11954 | ||
11955 | PL_runops = proto_perl->Irunops; | |
11956 | ||
11957 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
11958 | ||
11959 | #ifdef CSH | |
11960 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 11961 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
11962 | #endif |
11963 | ||
11964 | PL_lex_state = proto_perl->Ilex_state; | |
11965 | PL_lex_defer = proto_perl->Ilex_defer; | |
11966 | PL_lex_expect = proto_perl->Ilex_expect; | |
11967 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
11968 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
11969 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
11970 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
11971 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
11972 | PL_lex_op = proto_perl->Ilex_op; |
11973 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
11974 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
11975 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
11976 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
11977 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
11978 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
11979 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
11980 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
11981 | ||
11982 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
11983 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
11984 | PL_nexttoke = proto_perl->Inexttoke; | |
11985 | ||
1d773130 TB |
11986 | /* XXX This is probably masking the deeper issue of why |
11987 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
11988 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
11989 | * (A little debugging with a watchpoint on it may help.) | |
11990 | */ | |
389edf32 TB |
11991 | if (SvANY(proto_perl->Ilinestr)) { |
11992 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
11993 | i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr); | |
11994 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11995 | i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr); | |
11996 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11997 | i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr); | |
11998 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11999 | i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr); | |
12000 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
12001 | } | |
12002 | else { | |
12003 | PL_linestr = NEWSV(65,79); | |
12004 | sv_upgrade(PL_linestr,SVt_PVIV); | |
12005 | sv_setpvn(PL_linestr,"",0); | |
12006 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
12007 | } | |
1d7c1841 | 12008 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
12009 | PL_pending_ident = proto_perl->Ipending_ident; |
12010 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
12011 | ||
12012 | PL_expect = proto_perl->Iexpect; | |
12013 | ||
12014 | PL_multi_start = proto_perl->Imulti_start; | |
12015 | PL_multi_end = proto_perl->Imulti_end; | |
12016 | PL_multi_open = proto_perl->Imulti_open; | |
12017 | PL_multi_close = proto_perl->Imulti_close; | |
12018 | ||
12019 | PL_error_count = proto_perl->Ierror_count; | |
12020 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 12021 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 12022 | |
1d773130 | 12023 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 TB |
12024 | if (SvANY(proto_perl->Ilinestr)) { |
12025 | i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr); | |
12026 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
12027 | i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr); | |
12028 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
12029 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
12030 | } | |
12031 | else { | |
12032 | PL_last_uni = SvPVX(PL_linestr); | |
12033 | PL_last_lop = SvPVX(PL_linestr); | |
12034 | PL_last_lop_op = 0; | |
12035 | } | |
1d7c1841 | 12036 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 12037 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
12038 | #ifdef FCRYPT |
12039 | PL_cryptseen = proto_perl->Icryptseen; | |
12040 | #endif | |
12041 | ||
12042 | PL_hints = proto_perl->Ihints; | |
12043 | ||
12044 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
12045 | ||
12046 | #ifdef USE_LOCALE_COLLATE | |
12047 | PL_collation_ix = proto_perl->Icollation_ix; | |
12048 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
12049 | PL_collation_standard = proto_perl->Icollation_standard; | |
12050 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
12051 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
12052 | #endif /* USE_LOCALE_COLLATE */ | |
12053 | ||
12054 | #ifdef USE_LOCALE_NUMERIC | |
12055 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
12056 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
12057 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 12058 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
12059 | #endif /* !USE_LOCALE_NUMERIC */ |
12060 | ||
12061 | /* utf8 character classes */ | |
d2d73c3e AB |
12062 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
12063 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
12064 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
12065 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
12066 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
12067 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
12068 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
12069 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
12070 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
12071 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
12072 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
12073 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
12074 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
12075 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
12076 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
12077 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
12078 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 12079 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
12080 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
12081 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 12082 | |
6c3182a5 | 12083 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 12084 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
12085 | /* Unicode features (see perlrun/-C) */ |
12086 | PL_unicode = proto_perl->Iunicode; | |
12087 | ||
12088 | /* Pre-5.8 signals control */ | |
12089 | PL_signals = proto_perl->Isignals; | |
12090 | ||
12091 | /* times() ticks per second */ | |
12092 | PL_clocktick = proto_perl->Iclocktick; | |
12093 | ||
12094 | /* Recursion stopper for PerlIO_find_layer */ | |
12095 | PL_in_load_module = proto_perl->Iin_load_module; | |
12096 | ||
12097 | /* sort() routine */ | |
12098 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
12099 | ||
57c6e6d2 JH |
12100 | /* Not really needed/useful since the reenrant_retint is "volatile", |
12101 | * but do it for consistency's sake. */ | |
12102 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
12103 | ||
15a5279a JH |
12104 | /* Hooks to shared SVs and locks. */ |
12105 | PL_sharehook = proto_perl->Isharehook; | |
12106 | PL_lockhook = proto_perl->Ilockhook; | |
12107 | PL_unlockhook = proto_perl->Iunlockhook; | |
12108 | PL_threadhook = proto_perl->Ithreadhook; | |
12109 | ||
bce260cd JH |
12110 | PL_runops_std = proto_perl->Irunops_std; |
12111 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
12112 | ||
12113 | #ifdef THREADS_HAVE_PIDS | |
12114 | PL_ppid = proto_perl->Ippid; | |
12115 | #endif | |
12116 | ||
1d7c1841 GS |
12117 | /* swatch cache */ |
12118 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
12119 | PL_last_swash_klen = 0; | |
12120 | PL_last_swash_key[0]= '\0'; | |
12121 | PL_last_swash_tmps = (U8*)NULL; | |
12122 | PL_last_swash_slen = 0; | |
12123 | ||
1d7c1841 GS |
12124 | PL_glob_index = proto_perl->Iglob_index; |
12125 | PL_srand_called = proto_perl->Isrand_called; | |
12126 | PL_uudmap['M'] = 0; /* reinits on demand */ | |
12127 | PL_bitcount = Nullch; /* reinits on demand */ | |
12128 | ||
66fe0623 NIS |
12129 | if (proto_perl->Ipsig_pend) { |
12130 | Newz(0, PL_psig_pend, SIG_SIZE, int); | |
9dd79c3f | 12131 | } |
66fe0623 NIS |
12132 | else { |
12133 | PL_psig_pend = (int*)NULL; | |
12134 | } | |
12135 | ||
1d7c1841 | 12136 | if (proto_perl->Ipsig_ptr) { |
76d3c696 JH |
12137 | Newz(0, PL_psig_ptr, SIG_SIZE, SV*); |
12138 | Newz(0, PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 12139 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
12140 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
12141 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
12142 | } |
12143 | } | |
12144 | else { | |
12145 | PL_psig_ptr = (SV**)NULL; | |
12146 | PL_psig_name = (SV**)NULL; | |
12147 | } | |
12148 | ||
12149 | /* thrdvar.h stuff */ | |
12150 | ||
a0739874 | 12151 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
12152 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
12153 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
12154 | PL_tmps_max = proto_perl->Ttmps_max; | |
12155 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
12156 | Newz(50, PL_tmps_stack, PL_tmps_max, SV*); | |
12157 | i = 0; | |
12158 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 12159 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
12160 | ++i; |
12161 | } | |
12162 | ||
12163 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
12164 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
12165 | Newz(54, PL_markstack, i, I32); | |
12166 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
12167 | - proto_perl->Tmarkstack); | |
12168 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
12169 | - proto_perl->Tmarkstack); | |
12170 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
12171 | PL_markstack_ptr - PL_markstack + 1, I32); | |
12172 | ||
12173 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
12174 | * NOTE: unlike the others! */ | |
12175 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
12176 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
12177 | Newz(54, PL_scopestack, PL_scopestack_max, I32); | |
12178 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
12179 | ||
1d7c1841 | 12180 | /* NOTE: si_dup() looks at PL_markstack */ |
d2d73c3e | 12181 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
12182 | |
12183 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
12184 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
12185 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
12186 | |
12187 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
12188 | PL_stack_base = AvARRAY(PL_curstack); | |
12189 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
12190 | - proto_perl->Tstack_base); | |
12191 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
12192 | ||
12193 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
12194 | * NOTE: unlike the others! */ | |
12195 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
12196 | PL_savestack_max = proto_perl->Tsavestack_max; | |
12197 | /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/ | |
d2d73c3e | 12198 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
12199 | } |
12200 | else { | |
12201 | init_stacks(); | |
985e7056 | 12202 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
12203 | } |
12204 | ||
12205 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
12206 | PL_top_env = &PL_start_env; | |
12207 | ||
12208 | PL_op = proto_perl->Top; | |
12209 | ||
12210 | PL_Sv = Nullsv; | |
12211 | PL_Xpv = (XPV*)NULL; | |
12212 | PL_na = proto_perl->Tna; | |
12213 | ||
12214 | PL_statbuf = proto_perl->Tstatbuf; | |
12215 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
12216 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
12217 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
12218 | #ifdef HAS_TIMES |
12219 | PL_timesbuf = proto_perl->Ttimesbuf; | |
12220 | #endif | |
12221 | ||
12222 | PL_tainted = proto_perl->Ttainted; | |
12223 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
12224 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
12225 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
12226 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
12227 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 12228 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
12229 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
12230 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
12231 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
12232 | |
12233 | PL_restartop = proto_perl->Trestartop; | |
12234 | PL_in_eval = proto_perl->Tin_eval; | |
12235 | PL_delaymagic = proto_perl->Tdelaymagic; | |
12236 | PL_dirty = proto_perl->Tdirty; | |
12237 | PL_localizing = proto_perl->Tlocalizing; | |
12238 | ||
d2d73c3e | 12239 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
dd28f7bb | 12240 | PL_hv_fetch_ent_mh = Nullhe; |
1d7c1841 GS |
12241 | PL_modcount = proto_perl->Tmodcount; |
12242 | PL_lastgotoprobe = Nullop; | |
12243 | PL_dumpindent = proto_perl->Tdumpindent; | |
12244 | ||
12245 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
12246 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
12247 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
12248 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
12249 | PL_sortcxix = proto_perl->Tsortcxix; |
12250 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
12251 | PL_efloatsize = 0; /* reinits on demand */ | |
12252 | ||
12253 | /* regex stuff */ | |
12254 | ||
12255 | PL_screamfirst = NULL; | |
12256 | PL_screamnext = NULL; | |
12257 | PL_maxscream = -1; /* reinits on demand */ | |
12258 | PL_lastscream = Nullsv; | |
12259 | ||
12260 | PL_watchaddr = NULL; | |
12261 | PL_watchok = Nullch; | |
12262 | ||
12263 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
12264 | PL_regprecomp = Nullch; |
12265 | PL_regnpar = 0; | |
12266 | PL_regsize = 0; | |
1d7c1841 GS |
12267 | PL_colorset = 0; /* reinits PL_colors[] */ |
12268 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
12269 | PL_reginput = Nullch; |
12270 | PL_regbol = Nullch; | |
12271 | PL_regeol = Nullch; | |
12272 | PL_regstartp = (I32*)NULL; | |
12273 | PL_regendp = (I32*)NULL; | |
12274 | PL_reglastparen = (U32*)NULL; | |
2d862feb | 12275 | PL_reglastcloseparen = (U32*)NULL; |
1d7c1841 | 12276 | PL_regtill = Nullch; |
1d7c1841 GS |
12277 | PL_reg_start_tmp = (char**)NULL; |
12278 | PL_reg_start_tmpl = 0; | |
12279 | PL_regdata = (struct reg_data*)NULL; | |
12280 | PL_bostr = Nullch; | |
12281 | PL_reg_flags = 0; | |
12282 | PL_reg_eval_set = 0; | |
12283 | PL_regnarrate = 0; | |
12284 | PL_regprogram = (regnode*)NULL; | |
12285 | PL_regindent = 0; | |
12286 | PL_regcc = (CURCUR*)NULL; | |
12287 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
12288 | PL_reg_re = (regexp*)NULL; | |
12289 | PL_reg_ganch = Nullch; | |
12290 | PL_reg_sv = Nullsv; | |
53c4c00c | 12291 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
12292 | PL_reg_magic = (MAGIC*)NULL; |
12293 | PL_reg_oldpos = 0; | |
12294 | PL_reg_oldcurpm = (PMOP*)NULL; | |
12295 | PL_reg_curpm = (PMOP*)NULL; | |
12296 | PL_reg_oldsaved = Nullch; | |
12297 | PL_reg_oldsavedlen = 0; | |
ed252734 | 12298 | #ifdef PERL_COPY_ON_WRITE |
504cff3b | 12299 | PL_nrs = Nullsv; |
ed252734 | 12300 | #endif |
1d7c1841 GS |
12301 | PL_reg_maxiter = 0; |
12302 | PL_reg_leftiter = 0; | |
12303 | PL_reg_poscache = Nullch; | |
12304 | PL_reg_poscache_size= 0; | |
12305 | ||
12306 | /* RE engine - function pointers */ | |
12307 | PL_regcompp = proto_perl->Tregcompp; | |
12308 | PL_regexecp = proto_perl->Tregexecp; | |
12309 | PL_regint_start = proto_perl->Tregint_start; | |
12310 | PL_regint_string = proto_perl->Tregint_string; | |
12311 | PL_regfree = proto_perl->Tregfree; | |
12312 | ||
12313 | PL_reginterp_cnt = 0; | |
12314 | PL_reg_starttry = 0; | |
12315 | ||
a2efc822 SC |
12316 | /* Pluggable optimizer */ |
12317 | PL_peepp = proto_perl->Tpeepp; | |
12318 | ||
081fc587 AB |
12319 | PL_stashcache = newHV(); |
12320 | ||
a0739874 DM |
12321 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
12322 | ptr_table_free(PL_ptr_table); | |
12323 | PL_ptr_table = NULL; | |
c21d1a0f NC |
12324 | ptr_table_free(PL_shared_hek_table); |
12325 | PL_shared_hek_table = NULL; | |
a0739874 | 12326 | } |
8cf8f3d1 | 12327 | |
f284b03f AMS |
12328 | /* Call the ->CLONE method, if it exists, for each of the stashes |
12329 | identified by sv_dup() above. | |
12330 | */ | |
d2d73c3e AB |
12331 | while(av_len(param->stashes) != -1) { |
12332 | HV* stash = (HV*) av_shift(param->stashes); | |
f284b03f AMS |
12333 | GV* cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); |
12334 | if (cloner && GvCV(cloner)) { | |
12335 | dSP; | |
12336 | ENTER; | |
12337 | SAVETMPS; | |
12338 | PUSHMARK(SP); | |
7423f6db | 12339 | XPUSHs(sv_2mortal(newSVpvn(HvNAME_get(stash), HvNAMELEN_get(stash)))); |
f284b03f AMS |
12340 | PUTBACK; |
12341 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
12342 | FREETMPS; | |
12343 | LEAVE; | |
12344 | } | |
4a09accc | 12345 | } |
a0739874 | 12346 | |
dc507217 | 12347 | SvREFCNT_dec(param->stashes); |
dc507217 | 12348 | |
6d26897e DM |
12349 | /* orphaned? eg threads->new inside BEGIN or use */ |
12350 | if (PL_compcv && ! SvREFCNT(PL_compcv)) { | |
a3b680e6 | 12351 | (void)SvREFCNT_inc(PL_compcv); |
6d26897e DM |
12352 | SAVEFREESV(PL_compcv); |
12353 | } | |
12354 | ||
1d7c1841 | 12355 | return my_perl; |
1d7c1841 GS |
12356 | } |
12357 | ||
1d7c1841 | 12358 | #endif /* USE_ITHREADS */ |
a0ae6670 | 12359 | |
9f4817db | 12360 | /* |
ccfc67b7 JH |
12361 | =head1 Unicode Support |
12362 | ||
9f4817db JH |
12363 | =for apidoc sv_recode_to_utf8 |
12364 | ||
5d170f3a JH |
12365 | The encoding is assumed to be an Encode object, on entry the PV |
12366 | of the sv is assumed to be octets in that encoding, and the sv | |
12367 | will be converted into Unicode (and UTF-8). | |
9f4817db | 12368 | |
5d170f3a JH |
12369 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
12370 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
12371 | an C<Encode::XS> Encoding object, bad things will happen. |
12372 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 12373 | |
5d170f3a | 12374 | The PV of the sv is returned. |
9f4817db | 12375 | |
5d170f3a JH |
12376 | =cut */ |
12377 | ||
12378 | char * | |
12379 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
12380 | { | |
27da23d5 | 12381 | dVAR; |
220e2d4e | 12382 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
12383 | SV *uni; |
12384 | STRLEN len; | |
12385 | char *s; | |
12386 | dSP; | |
12387 | ENTER; | |
12388 | SAVETMPS; | |
220e2d4e | 12389 | save_re_context(); |
d0063567 DK |
12390 | PUSHMARK(sp); |
12391 | EXTEND(SP, 3); | |
12392 | XPUSHs(encoding); | |
12393 | XPUSHs(sv); | |
7a5fa8a2 | 12394 | /* |
f9893866 NIS |
12395 | NI-S 2002/07/09 |
12396 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
7a5fa8a2 | 12397 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means |
f9893866 NIS |
12398 | remove converted chars from source. |
12399 | ||
12400 | Both will default the value - let them. | |
7a5fa8a2 | 12401 | |
d0063567 | 12402 | XPUSHs(&PL_sv_yes); |
f9893866 | 12403 | */ |
d0063567 DK |
12404 | PUTBACK; |
12405 | call_method("decode", G_SCALAR); | |
12406 | SPAGAIN; | |
12407 | uni = POPs; | |
12408 | PUTBACK; | |
12409 | s = SvPV(uni, len); | |
d0063567 DK |
12410 | if (s != SvPVX(sv)) { |
12411 | SvGROW(sv, len + 1); | |
12412 | Move(s, SvPVX(sv), len, char); | |
12413 | SvCUR_set(sv, len); | |
12414 | SvPVX(sv)[len] = 0; | |
12415 | } | |
12416 | FREETMPS; | |
12417 | LEAVE; | |
d0063567 | 12418 | SvUTF8_on(sv); |
95899a2a | 12419 | return SvPVX(sv); |
f9893866 | 12420 | } |
95899a2a | 12421 | return SvPOKp(sv) ? SvPVX(sv) : NULL; |
9f4817db JH |
12422 | } |
12423 | ||
220e2d4e IH |
12424 | /* |
12425 | =for apidoc sv_cat_decode | |
12426 | ||
12427 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
12428 | assumed to be octets in that encoding and decoding the input starts | |
12429 | from the position which (PV + *offset) pointed to. The dsv will be | |
12430 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
12431 | when the string tstr appears in decoding output or the input ends on | |
12432 | the PV of the ssv. The value which the offset points will be modified | |
12433 | to the last input position on the ssv. | |
68795e93 | 12434 | |
220e2d4e IH |
12435 | Returns TRUE if the terminator was found, else returns FALSE. |
12436 | ||
12437 | =cut */ | |
12438 | ||
12439 | bool | |
12440 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
12441 | SV *ssv, int *offset, char *tstr, int tlen) | |
12442 | { | |
27da23d5 | 12443 | dVAR; |
a73e8557 | 12444 | bool ret = FALSE; |
220e2d4e | 12445 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
12446 | SV *offsv; |
12447 | dSP; | |
12448 | ENTER; | |
12449 | SAVETMPS; | |
12450 | save_re_context(); | |
12451 | PUSHMARK(sp); | |
12452 | EXTEND(SP, 6); | |
12453 | XPUSHs(encoding); | |
12454 | XPUSHs(dsv); | |
12455 | XPUSHs(ssv); | |
12456 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
12457 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
12458 | PUTBACK; | |
12459 | call_method("cat_decode", G_SCALAR); | |
12460 | SPAGAIN; | |
12461 | ret = SvTRUE(TOPs); | |
12462 | *offset = SvIV(offsv); | |
12463 | PUTBACK; | |
12464 | FREETMPS; | |
12465 | LEAVE; | |
220e2d4e | 12466 | } |
a73e8557 JH |
12467 | else |
12468 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
12469 | return ret; | |
220e2d4e | 12470 | } |
f9893866 | 12471 | |
241d1a3b NC |
12472 | /* |
12473 | * Local variables: | |
12474 | * c-indentation-style: bsd | |
12475 | * c-basic-offset: 4 | |
12476 | * indent-tabs-mode: t | |
12477 | * End: | |
12478 | * | |
37442d52 RGS |
12479 | * ex: set ts=8 sts=4 sw=4 noet: |
12480 | */ |