Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* sv.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
7272f7c1 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 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 | 32 | #ifdef PERL_UTF8_CACHE_ASSERT |
ab455f60 | 33 | /* if adding more checks watch out for the following tests: |
e23c8137 JH |
34 | * t/op/index.t t/op/length.t t/op/pat.t t/op/substr.t |
35 | * lib/utf8.t lib/Unicode/Collate/t/index.t | |
36 | * --jhi | |
37 | */ | |
6f207bd3 | 38 | # define ASSERT_UTF8_CACHE(cache) \ |
ab455f60 NC |
39 | STMT_START { if (cache) { assert((cache)[0] <= (cache)[1]); \ |
40 | assert((cache)[2] <= (cache)[3]); \ | |
41 | assert((cache)[3] <= (cache)[1]);} \ | |
42 | } STMT_END | |
e23c8137 | 43 | #else |
6f207bd3 | 44 | # define ASSERT_UTF8_CACHE(cache) NOOP |
e23c8137 JH |
45 | #endif |
46 | ||
f8c7b90f | 47 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 48 | #define SV_COW_NEXT_SV(sv) INT2PTR(SV *,SvUVX(sv)) |
607fa7f2 | 49 | #define SV_COW_NEXT_SV_SET(current,next) SvUV_set(current, PTR2UV(next)) |
b5ccf5f2 | 50 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
765f542d | 51 | on-write. */ |
765f542d | 52 | #endif |
645c22ef DM |
53 | |
54 | /* ============================================================================ | |
55 | ||
56 | =head1 Allocation and deallocation of SVs. | |
57 | ||
d2a0f284 JC |
58 | An SV (or AV, HV, etc.) is allocated in two parts: the head (struct |
59 | sv, av, hv...) contains type and reference count information, and for | |
60 | many types, a pointer to the body (struct xrv, xpv, xpviv...), which | |
61 | contains fields specific to each type. Some types store all they need | |
62 | in the head, so don't have a body. | |
63 | ||
64 | In all but the most memory-paranoid configuations (ex: PURIFY), heads | |
65 | and bodies are allocated out of arenas, which by default are | |
66 | approximately 4K chunks of memory parcelled up into N heads or bodies. | |
93e68bfb JC |
67 | Sv-bodies are allocated by their sv-type, guaranteeing size |
68 | consistency needed to allocate safely from arrays. | |
69 | ||
d2a0f284 JC |
70 | For SV-heads, the first slot in each arena is reserved, and holds a |
71 | link to the next arena, some flags, and a note of the number of slots. | |
72 | Snaked through each arena chain is a linked list of free items; when | |
73 | this becomes empty, an extra arena is allocated and divided up into N | |
74 | items which are threaded into the free list. | |
75 | ||
76 | SV-bodies are similar, but they use arena-sets by default, which | |
77 | separate the link and info from the arena itself, and reclaim the 1st | |
78 | slot in the arena. SV-bodies are further described later. | |
645c22ef DM |
79 | |
80 | The following global variables are associated with arenas: | |
81 | ||
82 | PL_sv_arenaroot pointer to list of SV arenas | |
83 | PL_sv_root pointer to list of free SV structures | |
84 | ||
d2a0f284 JC |
85 | PL_body_arenas head of linked-list of body arenas |
86 | PL_body_roots[] array of pointers to list of free bodies of svtype | |
87 | arrays are indexed by the svtype needed | |
93e68bfb | 88 | |
d2a0f284 JC |
89 | A few special SV heads are not allocated from an arena, but are |
90 | instead directly created in the interpreter structure, eg PL_sv_undef. | |
93e68bfb JC |
91 | The size of arenas can be changed from the default by setting |
92 | PERL_ARENA_SIZE appropriately at compile time. | |
645c22ef DM |
93 | |
94 | The SV arena serves the secondary purpose of allowing still-live SVs | |
95 | to be located and destroyed during final cleanup. | |
96 | ||
97 | At the lowest level, the macros new_SV() and del_SV() grab and free | |
98 | an SV head. (If debugging with -DD, del_SV() calls the function S_del_sv() | |
99 | to return the SV to the free list with error checking.) new_SV() calls | |
100 | more_sv() / sv_add_arena() to add an extra arena if the free list is empty. | |
101 | SVs in the free list have their SvTYPE field set to all ones. | |
102 | ||
ff276b08 | 103 | At the time of very final cleanup, sv_free_arenas() is called from |
645c22ef | 104 | perl_destruct() to physically free all the arenas allocated since the |
6a93a7e5 | 105 | start of the interpreter. |
645c22ef | 106 | |
645c22ef DM |
107 | The function visit() scans the SV arenas list, and calls a specified |
108 | function for each SV it finds which is still live - ie which has an SvTYPE | |
109 | other than all 1's, and a non-zero SvREFCNT. visit() is used by the | |
110 | following functions (specified as [function that calls visit()] / [function | |
111 | called by visit() for each SV]): | |
112 | ||
113 | sv_report_used() / do_report_used() | |
f2524eef | 114 | dump all remaining SVs (debugging aid) |
645c22ef DM |
115 | |
116 | sv_clean_objs() / do_clean_objs(),do_clean_named_objs() | |
117 | Attempt to free all objects pointed to by RVs, | |
118 | and, unless DISABLE_DESTRUCTOR_KLUDGE is defined, | |
119 | try to do the same for all objects indirectly | |
120 | referenced by typeglobs too. Called once from | |
121 | perl_destruct(), prior to calling sv_clean_all() | |
122 | below. | |
123 | ||
124 | sv_clean_all() / do_clean_all() | |
125 | SvREFCNT_dec(sv) each remaining SV, possibly | |
126 | triggering an sv_free(). It also sets the | |
127 | SVf_BREAK flag on the SV to indicate that the | |
128 | refcnt has been artificially lowered, and thus | |
129 | stopping sv_free() from giving spurious warnings | |
130 | about SVs which unexpectedly have a refcnt | |
131 | of zero. called repeatedly from perl_destruct() | |
132 | until there are no SVs left. | |
133 | ||
93e68bfb | 134 | =head2 Arena allocator API Summary |
645c22ef DM |
135 | |
136 | Private API to rest of sv.c | |
137 | ||
138 | new_SV(), del_SV(), | |
139 | ||
140 | new_XIV(), del_XIV(), | |
141 | new_XNV(), del_XNV(), | |
142 | etc | |
143 | ||
144 | Public API: | |
145 | ||
8cf8f3d1 | 146 | sv_report_used(), sv_clean_objs(), sv_clean_all(), sv_free_arenas() |
645c22ef | 147 | |
645c22ef DM |
148 | =cut |
149 | ||
150 | ============================================================================ */ | |
151 | ||
4561caa4 CS |
152 | /* |
153 | * "A time to plant, and a time to uproot what was planted..." | |
154 | */ | |
155 | ||
77354fb4 NC |
156 | void |
157 | Perl_offer_nice_chunk(pTHX_ void *chunk, U32 chunk_size) | |
158 | { | |
97aff369 | 159 | dVAR; |
77354fb4 NC |
160 | void *new_chunk; |
161 | U32 new_chunk_size; | |
77354fb4 NC |
162 | new_chunk = (void *)(chunk); |
163 | new_chunk_size = (chunk_size); | |
164 | if (new_chunk_size > PL_nice_chunk_size) { | |
165 | Safefree(PL_nice_chunk); | |
166 | PL_nice_chunk = (char *) new_chunk; | |
167 | PL_nice_chunk_size = new_chunk_size; | |
168 | } else { | |
169 | Safefree(chunk); | |
170 | } | |
77354fb4 | 171 | } |
cac9b346 | 172 | |
fd0854ff | 173 | #ifdef DEBUG_LEAKING_SCALARS |
22162ca8 | 174 | # define FREE_SV_DEBUG_FILE(sv) Safefree((sv)->sv_debug_file) |
fd0854ff DM |
175 | #else |
176 | # define FREE_SV_DEBUG_FILE(sv) | |
177 | #endif | |
178 | ||
48614a46 NC |
179 | #ifdef PERL_POISON |
180 | # define SvARENA_CHAIN(sv) ((sv)->sv_u.svu_rv) | |
181 | /* Whilst I'd love to do this, it seems that things like to check on | |
182 | unreferenced scalars | |
7e337ee0 | 183 | # define POSION_SV_HEAD(sv) PoisonNew(sv, 1, struct STRUCT_SV) |
48614a46 | 184 | */ |
7e337ee0 JH |
185 | # define POSION_SV_HEAD(sv) PoisonNew(&SvANY(sv), 1, void *), \ |
186 | PoisonNew(&SvREFCNT(sv), 1, U32) | |
48614a46 NC |
187 | #else |
188 | # define SvARENA_CHAIN(sv) SvANY(sv) | |
189 | # define POSION_SV_HEAD(sv) | |
190 | #endif | |
191 | ||
053fc874 GS |
192 | #define plant_SV(p) \ |
193 | STMT_START { \ | |
fd0854ff | 194 | FREE_SV_DEBUG_FILE(p); \ |
48614a46 NC |
195 | POSION_SV_HEAD(p); \ |
196 | SvARENA_CHAIN(p) = (void *)PL_sv_root; \ | |
053fc874 GS |
197 | SvFLAGS(p) = SVTYPEMASK; \ |
198 | PL_sv_root = (p); \ | |
199 | --PL_sv_count; \ | |
200 | } STMT_END | |
a0d0e21e | 201 | |
053fc874 GS |
202 | #define uproot_SV(p) \ |
203 | STMT_START { \ | |
204 | (p) = PL_sv_root; \ | |
bb7bbd9c | 205 | PL_sv_root = (SV*)SvARENA_CHAIN(p); \ |
053fc874 GS |
206 | ++PL_sv_count; \ |
207 | } STMT_END | |
208 | ||
645c22ef | 209 | |
cac9b346 NC |
210 | /* make some more SVs by adding another arena */ |
211 | ||
cac9b346 NC |
212 | STATIC SV* |
213 | S_more_sv(pTHX) | |
214 | { | |
97aff369 | 215 | dVAR; |
cac9b346 NC |
216 | SV* sv; |
217 | ||
218 | if (PL_nice_chunk) { | |
219 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
bd61b366 | 220 | PL_nice_chunk = NULL; |
cac9b346 NC |
221 | PL_nice_chunk_size = 0; |
222 | } | |
223 | else { | |
224 | char *chunk; /* must use New here to match call to */ | |
d2a0f284 | 225 | Newx(chunk,PERL_ARENA_SIZE,char); /* Safefree() in sv_free_arenas() */ |
2e7ed132 | 226 | sv_add_arena(chunk, PERL_ARENA_SIZE, 0); |
cac9b346 NC |
227 | } |
228 | uproot_SV(sv); | |
229 | return sv; | |
230 | } | |
231 | ||
645c22ef DM |
232 | /* new_SV(): return a new, empty SV head */ |
233 | ||
eba0f806 DM |
234 | #ifdef DEBUG_LEAKING_SCALARS |
235 | /* provide a real function for a debugger to play with */ | |
236 | STATIC SV* | |
237 | S_new_SV(pTHX) | |
238 | { | |
239 | SV* sv; | |
240 | ||
eba0f806 DM |
241 | if (PL_sv_root) |
242 | uproot_SV(sv); | |
243 | else | |
cac9b346 | 244 | sv = S_more_sv(aTHX); |
eba0f806 DM |
245 | SvANY(sv) = 0; |
246 | SvREFCNT(sv) = 1; | |
247 | SvFLAGS(sv) = 0; | |
fd0854ff | 248 | sv->sv_debug_optype = PL_op ? PL_op->op_type : 0; |
f24aceb1 DM |
249 | sv->sv_debug_line = (U16) (PL_parser |
250 | ? PL_parser->copline == NOLINE | |
251 | ? PL_curcop | |
252 | ? CopLINE(PL_curcop) | |
253 | : 0 | |
254 | : PL_parser->copline | |
255 | : 0); | |
fd0854ff DM |
256 | sv->sv_debug_inpad = 0; |
257 | sv->sv_debug_cloned = 0; | |
fd0854ff | 258 | sv->sv_debug_file = PL_curcop ? savepv(CopFILE(PL_curcop)): NULL; |
fd0854ff | 259 | |
eba0f806 DM |
260 | return sv; |
261 | } | |
262 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
263 | ||
264 | #else | |
265 | # define new_SV(p) \ | |
053fc874 | 266 | STMT_START { \ |
053fc874 GS |
267 | if (PL_sv_root) \ |
268 | uproot_SV(p); \ | |
269 | else \ | |
cac9b346 | 270 | (p) = S_more_sv(aTHX); \ |
053fc874 GS |
271 | SvANY(p) = 0; \ |
272 | SvREFCNT(p) = 1; \ | |
273 | SvFLAGS(p) = 0; \ | |
274 | } STMT_END | |
eba0f806 | 275 | #endif |
463ee0b2 | 276 | |
645c22ef DM |
277 | |
278 | /* del_SV(): return an empty SV head to the free list */ | |
279 | ||
a0d0e21e | 280 | #ifdef DEBUGGING |
4561caa4 | 281 | |
053fc874 GS |
282 | #define del_SV(p) \ |
283 | STMT_START { \ | |
aea4f609 | 284 | if (DEBUG_D_TEST) \ |
053fc874 GS |
285 | del_sv(p); \ |
286 | else \ | |
287 | plant_SV(p); \ | |
053fc874 | 288 | } STMT_END |
a0d0e21e | 289 | |
76e3520e | 290 | STATIC void |
cea2e8a9 | 291 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 292 | { |
97aff369 | 293 | dVAR; |
aea4f609 | 294 | if (DEBUG_D_TEST) { |
4633a7c4 | 295 | SV* sva; |
a3b680e6 | 296 | bool ok = 0; |
3280af22 | 297 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
53c1dcc0 AL |
298 | const SV * const sv = sva + 1; |
299 | const SV * const svend = &sva[SvREFCNT(sva)]; | |
c0ff570e | 300 | if (p >= sv && p < svend) { |
a0d0e21e | 301 | ok = 1; |
c0ff570e NC |
302 | break; |
303 | } | |
a0d0e21e LW |
304 | } |
305 | if (!ok) { | |
0453d815 | 306 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 307 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
308 | "Attempt to free non-arena SV: 0x%"UVxf |
309 | pTHX__FORMAT, PTR2UV(p) pTHX__VALUE); | |
a0d0e21e LW |
310 | return; |
311 | } | |
312 | } | |
4561caa4 | 313 | plant_SV(p); |
463ee0b2 | 314 | } |
a0d0e21e | 315 | |
4561caa4 CS |
316 | #else /* ! DEBUGGING */ |
317 | ||
318 | #define del_SV(p) plant_SV(p) | |
319 | ||
320 | #endif /* DEBUGGING */ | |
463ee0b2 | 321 | |
645c22ef DM |
322 | |
323 | /* | |
ccfc67b7 JH |
324 | =head1 SV Manipulation Functions |
325 | ||
645c22ef DM |
326 | =for apidoc sv_add_arena |
327 | ||
328 | Given a chunk of memory, link it to the head of the list of arenas, | |
329 | and split it into a list of free SVs. | |
330 | ||
331 | =cut | |
332 | */ | |
333 | ||
4633a7c4 | 334 | void |
864dbfa3 | 335 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 336 | { |
97aff369 | 337 | dVAR; |
0bd48802 | 338 | SV* const sva = (SV*)ptr; |
463ee0b2 LW |
339 | register SV* sv; |
340 | register SV* svend; | |
4633a7c4 LW |
341 | |
342 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 343 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
344 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
345 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
346 | ||
3280af22 NIS |
347 | PL_sv_arenaroot = sva; |
348 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
349 | |
350 | svend = &sva[SvREFCNT(sva) - 1]; | |
351 | sv = sva + 1; | |
463ee0b2 | 352 | while (sv < svend) { |
48614a46 | 353 | SvARENA_CHAIN(sv) = (void *)(SV*)(sv + 1); |
03e36789 | 354 | #ifdef DEBUGGING |
978b032e | 355 | SvREFCNT(sv) = 0; |
03e36789 | 356 | #endif |
4b69cbe3 | 357 | /* Must always set typemask because it's always checked in on cleanup |
03e36789 | 358 | when the arenas are walked looking for objects. */ |
8990e307 | 359 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
360 | sv++; |
361 | } | |
48614a46 | 362 | SvARENA_CHAIN(sv) = 0; |
03e36789 NC |
363 | #ifdef DEBUGGING |
364 | SvREFCNT(sv) = 0; | |
365 | #endif | |
4633a7c4 LW |
366 | SvFLAGS(sv) = SVTYPEMASK; |
367 | } | |
368 | ||
055972dc DM |
369 | /* visit(): call the named function for each non-free SV in the arenas |
370 | * whose flags field matches the flags/mask args. */ | |
645c22ef | 371 | |
5226ed68 | 372 | STATIC I32 |
055972dc | 373 | S_visit(pTHX_ SVFUNC_t f, U32 flags, U32 mask) |
8990e307 | 374 | { |
97aff369 | 375 | dVAR; |
4633a7c4 | 376 | SV* sva; |
5226ed68 | 377 | I32 visited = 0; |
8990e307 | 378 | |
3280af22 | 379 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
53c1dcc0 | 380 | register const SV * const svend = &sva[SvREFCNT(sva)]; |
a3b680e6 | 381 | register SV* sv; |
4561caa4 | 382 | for (sv = sva + 1; sv < svend; ++sv) { |
055972dc DM |
383 | if (SvTYPE(sv) != SVTYPEMASK |
384 | && (sv->sv_flags & mask) == flags | |
385 | && SvREFCNT(sv)) | |
386 | { | |
acfe0abc | 387 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
388 | ++visited; |
389 | } | |
8990e307 LW |
390 | } |
391 | } | |
5226ed68 | 392 | return visited; |
8990e307 LW |
393 | } |
394 | ||
758a08c3 JH |
395 | #ifdef DEBUGGING |
396 | ||
645c22ef DM |
397 | /* called by sv_report_used() for each live SV */ |
398 | ||
399 | static void | |
acfe0abc | 400 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
401 | { |
402 | if (SvTYPE(sv) != SVTYPEMASK) { | |
403 | PerlIO_printf(Perl_debug_log, "****\n"); | |
404 | sv_dump(sv); | |
405 | } | |
406 | } | |
758a08c3 | 407 | #endif |
645c22ef DM |
408 | |
409 | /* | |
410 | =for apidoc sv_report_used | |
411 | ||
412 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
413 | ||
414 | =cut | |
415 | */ | |
416 | ||
8990e307 | 417 | void |
864dbfa3 | 418 | Perl_sv_report_used(pTHX) |
4561caa4 | 419 | { |
ff270d3a | 420 | #ifdef DEBUGGING |
055972dc | 421 | visit(do_report_used, 0, 0); |
96a5add6 AL |
422 | #else |
423 | PERL_UNUSED_CONTEXT; | |
ff270d3a | 424 | #endif |
4561caa4 CS |
425 | } |
426 | ||
645c22ef DM |
427 | /* called by sv_clean_objs() for each live SV */ |
428 | ||
429 | static void | |
e15faf7d | 430 | do_clean_objs(pTHX_ SV *ref) |
645c22ef | 431 | { |
97aff369 | 432 | dVAR; |
ea724faa NC |
433 | assert (SvROK(ref)); |
434 | { | |
823a54a3 AL |
435 | SV * const target = SvRV(ref); |
436 | if (SvOBJECT(target)) { | |
437 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(ref))); | |
438 | if (SvWEAKREF(ref)) { | |
439 | sv_del_backref(target, ref); | |
440 | SvWEAKREF_off(ref); | |
441 | SvRV_set(ref, NULL); | |
442 | } else { | |
443 | SvROK_off(ref); | |
444 | SvRV_set(ref, NULL); | |
445 | SvREFCNT_dec(target); | |
446 | } | |
645c22ef DM |
447 | } |
448 | } | |
449 | ||
450 | /* XXX Might want to check arrays, etc. */ | |
451 | } | |
452 | ||
453 | /* called by sv_clean_objs() for each live SV */ | |
454 | ||
455 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
456 | static void | |
acfe0abc | 457 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef | 458 | { |
97aff369 | 459 | dVAR; |
ea724faa | 460 | assert(SvTYPE(sv) == SVt_PVGV); |
d011219a NC |
461 | assert(isGV_with_GP(sv)); |
462 | if (GvGP(sv)) { | |
c69033f2 NC |
463 | if (( |
464 | #ifdef PERL_DONT_CREATE_GVSV | |
465 | GvSV(sv) && | |
466 | #endif | |
467 | SvOBJECT(GvSV(sv))) || | |
645c22ef DM |
468 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || |
469 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
9c12f1e5 RGS |
470 | /* In certain rare cases GvIOp(sv) can be NULL, which would make SvOBJECT(GvIO(sv)) dereference NULL. */ |
471 | (GvIO(sv) ? (SvFLAGS(GvIOp(sv)) & SVs_OBJECT) : 0) || | |
645c22ef DM |
472 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) |
473 | { | |
474 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
ec5f3c78 | 475 | SvFLAGS(sv) |= SVf_BREAK; |
645c22ef DM |
476 | SvREFCNT_dec(sv); |
477 | } | |
478 | } | |
479 | } | |
480 | #endif | |
481 | ||
482 | /* | |
483 | =for apidoc sv_clean_objs | |
484 | ||
485 | Attempt to destroy all objects not yet freed | |
486 | ||
487 | =cut | |
488 | */ | |
489 | ||
4561caa4 | 490 | void |
864dbfa3 | 491 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 492 | { |
97aff369 | 493 | dVAR; |
3280af22 | 494 | PL_in_clean_objs = TRUE; |
055972dc | 495 | visit(do_clean_objs, SVf_ROK, SVf_ROK); |
4561caa4 | 496 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
2d0f3c12 | 497 | /* some barnacles may yet remain, clinging to typeglobs */ |
d011219a | 498 | visit(do_clean_named_objs, SVt_PVGV|SVpgv_GP, SVTYPEMASK|SVp_POK|SVpgv_GP); |
4561caa4 | 499 | #endif |
3280af22 | 500 | PL_in_clean_objs = FALSE; |
4561caa4 CS |
501 | } |
502 | ||
645c22ef DM |
503 | /* called by sv_clean_all() for each live SV */ |
504 | ||
505 | static void | |
acfe0abc | 506 | do_clean_all(pTHX_ SV *sv) |
645c22ef | 507 | { |
97aff369 | 508 | dVAR; |
645c22ef DM |
509 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); |
510 | SvFLAGS(sv) |= SVf_BREAK; | |
511 | SvREFCNT_dec(sv); | |
512 | } | |
513 | ||
514 | /* | |
515 | =for apidoc sv_clean_all | |
516 | ||
517 | Decrement the refcnt of each remaining SV, possibly triggering a | |
518 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 519 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
520 | |
521 | =cut | |
522 | */ | |
523 | ||
5226ed68 | 524 | I32 |
864dbfa3 | 525 | Perl_sv_clean_all(pTHX) |
8990e307 | 526 | { |
97aff369 | 527 | dVAR; |
5226ed68 | 528 | I32 cleaned; |
3280af22 | 529 | PL_in_clean_all = TRUE; |
055972dc | 530 | cleaned = visit(do_clean_all, 0,0); |
3280af22 | 531 | PL_in_clean_all = FALSE; |
5226ed68 | 532 | return cleaned; |
8990e307 | 533 | } |
463ee0b2 | 534 | |
5e258f8c JC |
535 | /* |
536 | ARENASETS: a meta-arena implementation which separates arena-info | |
537 | into struct arena_set, which contains an array of struct | |
538 | arena_descs, each holding info for a single arena. By separating | |
539 | the meta-info from the arena, we recover the 1st slot, formerly | |
540 | borrowed for list management. The arena_set is about the size of an | |
39244528 | 541 | arena, avoiding the needless malloc overhead of a naive linked-list. |
5e258f8c JC |
542 | |
543 | The cost is 1 arena-set malloc per ~320 arena-mallocs, + the unused | |
544 | memory in the last arena-set (1/2 on average). In trade, we get | |
545 | back the 1st slot in each arena (ie 1.7% of a CV-arena, less for | |
d2a0f284 JC |
546 | smaller types). The recovery of the wasted space allows use of |
547 | small arenas for large, rare body types, | |
5e258f8c | 548 | */ |
5e258f8c | 549 | struct arena_desc { |
398c677b NC |
550 | char *arena; /* the raw storage, allocated aligned */ |
551 | size_t size; /* its size ~4k typ */ | |
0a848332 | 552 | U32 misc; /* type, and in future other things. */ |
5e258f8c JC |
553 | }; |
554 | ||
e6148039 NC |
555 | struct arena_set; |
556 | ||
557 | /* Get the maximum number of elements in set[] such that struct arena_set | |
558 | will fit within PERL_ARENA_SIZE, which is probabably just under 4K, and | |
559 | therefore likely to be 1 aligned memory page. */ | |
560 | ||
561 | #define ARENAS_PER_SET ((PERL_ARENA_SIZE - sizeof(struct arena_set*) \ | |
562 | - 2 * sizeof(int)) / sizeof (struct arena_desc)) | |
5e258f8c JC |
563 | |
564 | struct arena_set { | |
565 | struct arena_set* next; | |
0a848332 NC |
566 | unsigned int set_size; /* ie ARENAS_PER_SET */ |
567 | unsigned int curr; /* index of next available arena-desc */ | |
5e258f8c JC |
568 | struct arena_desc set[ARENAS_PER_SET]; |
569 | }; | |
570 | ||
645c22ef DM |
571 | /* |
572 | =for apidoc sv_free_arenas | |
573 | ||
574 | Deallocate the memory used by all arenas. Note that all the individual SV | |
575 | heads and bodies within the arenas must already have been freed. | |
576 | ||
577 | =cut | |
578 | */ | |
4633a7c4 | 579 | void |
864dbfa3 | 580 | Perl_sv_free_arenas(pTHX) |
4633a7c4 | 581 | { |
97aff369 | 582 | dVAR; |
4633a7c4 LW |
583 | SV* sva; |
584 | SV* svanext; | |
0a848332 | 585 | unsigned int i; |
4633a7c4 LW |
586 | |
587 | /* Free arenas here, but be careful about fake ones. (We assume | |
588 | contiguity of the fake ones with the corresponding real ones.) */ | |
589 | ||
3280af22 | 590 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
591 | svanext = (SV*) SvANY(sva); |
592 | while (svanext && SvFAKE(svanext)) | |
593 | svanext = (SV*) SvANY(svanext); | |
594 | ||
595 | if (!SvFAKE(sva)) | |
1df70142 | 596 | Safefree(sva); |
4633a7c4 | 597 | } |
93e68bfb | 598 | |
5e258f8c | 599 | { |
0a848332 NC |
600 | struct arena_set *aroot = (struct arena_set*) PL_body_arenas; |
601 | ||
602 | while (aroot) { | |
603 | struct arena_set *current = aroot; | |
604 | i = aroot->curr; | |
605 | while (i--) { | |
5e258f8c JC |
606 | assert(aroot->set[i].arena); |
607 | Safefree(aroot->set[i].arena); | |
608 | } | |
0a848332 NC |
609 | aroot = aroot->next; |
610 | Safefree(current); | |
5e258f8c JC |
611 | } |
612 | } | |
dc8220bf | 613 | PL_body_arenas = 0; |
fdda85ca | 614 | |
0a848332 NC |
615 | i = PERL_ARENA_ROOTS_SIZE; |
616 | while (i--) | |
93e68bfb | 617 | PL_body_roots[i] = 0; |
93e68bfb | 618 | |
43c5f42d | 619 | Safefree(PL_nice_chunk); |
bd61b366 | 620 | PL_nice_chunk = NULL; |
3280af22 NIS |
621 | PL_nice_chunk_size = 0; |
622 | PL_sv_arenaroot = 0; | |
623 | PL_sv_root = 0; | |
4633a7c4 LW |
624 | } |
625 | ||
bd81e77b NC |
626 | /* |
627 | Here are mid-level routines that manage the allocation of bodies out | |
628 | of the various arenas. There are 5 kinds of arenas: | |
29489e7c | 629 | |
bd81e77b NC |
630 | 1. SV-head arenas, which are discussed and handled above |
631 | 2. regular body arenas | |
632 | 3. arenas for reduced-size bodies | |
633 | 4. Hash-Entry arenas | |
634 | 5. pte arenas (thread related) | |
29489e7c | 635 | |
bd81e77b NC |
636 | Arena types 2 & 3 are chained by body-type off an array of |
637 | arena-root pointers, which is indexed by svtype. Some of the | |
638 | larger/less used body types are malloced singly, since a large | |
639 | unused block of them is wasteful. Also, several svtypes dont have | |
640 | bodies; the data fits into the sv-head itself. The arena-root | |
641 | pointer thus has a few unused root-pointers (which may be hijacked | |
642 | later for arena types 4,5) | |
29489e7c | 643 | |
bd81e77b NC |
644 | 3 differs from 2 as an optimization; some body types have several |
645 | unused fields in the front of the structure (which are kept in-place | |
646 | for consistency). These bodies can be allocated in smaller chunks, | |
647 | because the leading fields arent accessed. Pointers to such bodies | |
648 | are decremented to point at the unused 'ghost' memory, knowing that | |
649 | the pointers are used with offsets to the real memory. | |
29489e7c | 650 | |
bd81e77b NC |
651 | HE, HEK arenas are managed separately, with separate code, but may |
652 | be merge-able later.. | |
653 | ||
654 | PTE arenas are not sv-bodies, but they share these mid-level | |
655 | mechanics, so are considered here. The new mid-level mechanics rely | |
656 | on the sv_type of the body being allocated, so we just reserve one | |
657 | of the unused body-slots for PTEs, then use it in those (2) PTE | |
658 | contexts below (line ~10k) | |
659 | */ | |
660 | ||
bd26d9a3 | 661 | /* get_arena(size): this creates custom-sized arenas |
5e258f8c JC |
662 | TBD: export properly for hv.c: S_more_he(). |
663 | */ | |
664 | void* | |
0a848332 | 665 | Perl_get_arena(pTHX_ size_t arena_size, U32 misc) |
5e258f8c | 666 | { |
7a89be66 | 667 | dVAR; |
5e258f8c | 668 | struct arena_desc* adesc; |
39244528 | 669 | struct arena_set *aroot = (struct arena_set*) PL_body_arenas; |
0a848332 | 670 | unsigned int curr; |
5e258f8c | 671 | |
476a1e16 JC |
672 | /* shouldnt need this |
673 | if (!arena_size) arena_size = PERL_ARENA_SIZE; | |
674 | */ | |
5e258f8c JC |
675 | |
676 | /* may need new arena-set to hold new arena */ | |
39244528 NC |
677 | if (!aroot || aroot->curr >= aroot->set_size) { |
678 | struct arena_set *newroot; | |
5e258f8c JC |
679 | Newxz(newroot, 1, struct arena_set); |
680 | newroot->set_size = ARENAS_PER_SET; | |
39244528 NC |
681 | newroot->next = aroot; |
682 | aroot = newroot; | |
683 | PL_body_arenas = (void *) newroot; | |
52944de8 | 684 | DEBUG_m(PerlIO_printf(Perl_debug_log, "new arenaset %p\n", (void*)aroot)); |
5e258f8c JC |
685 | } |
686 | ||
687 | /* ok, now have arena-set with at least 1 empty/available arena-desc */ | |
39244528 NC |
688 | curr = aroot->curr++; |
689 | adesc = &(aroot->set[curr]); | |
5e258f8c JC |
690 | assert(!adesc->arena); |
691 | ||
89086707 | 692 | Newx(adesc->arena, arena_size, char); |
5e258f8c | 693 | adesc->size = arena_size; |
0a848332 | 694 | adesc->misc = misc; |
d67b3c53 JH |
695 | DEBUG_m(PerlIO_printf(Perl_debug_log, "arena %d added: %p size %"UVuf"\n", |
696 | curr, (void*)adesc->arena, (UV)arena_size)); | |
5e258f8c JC |
697 | |
698 | return adesc->arena; | |
5e258f8c JC |
699 | } |
700 | ||
53c1dcc0 | 701 | |
bd81e77b | 702 | /* return a thing to the free list */ |
29489e7c | 703 | |
bd81e77b NC |
704 | #define del_body(thing, root) \ |
705 | STMT_START { \ | |
00b6aa41 | 706 | void ** const thing_copy = (void **)thing;\ |
bd81e77b NC |
707 | *thing_copy = *root; \ |
708 | *root = (void*)thing_copy; \ | |
bd81e77b | 709 | } STMT_END |
29489e7c | 710 | |
bd81e77b | 711 | /* |
d2a0f284 JC |
712 | |
713 | =head1 SV-Body Allocation | |
714 | ||
715 | Allocation of SV-bodies is similar to SV-heads, differing as follows; | |
716 | the allocation mechanism is used for many body types, so is somewhat | |
717 | more complicated, it uses arena-sets, and has no need for still-live | |
718 | SV detection. | |
719 | ||
720 | At the outermost level, (new|del)_X*V macros return bodies of the | |
721 | appropriate type. These macros call either (new|del)_body_type or | |
722 | (new|del)_body_allocated macro pairs, depending on specifics of the | |
723 | type. Most body types use the former pair, the latter pair is used to | |
724 | allocate body types with "ghost fields". | |
725 | ||
726 | "ghost fields" are fields that are unused in certain types, and | |
727 | consequently dont need to actually exist. They are declared because | |
728 | they're part of a "base type", which allows use of functions as | |
729 | methods. The simplest examples are AVs and HVs, 2 aggregate types | |
730 | which don't use the fields which support SCALAR semantics. | |
731 | ||
732 | For these types, the arenas are carved up into *_allocated size | |
733 | chunks, we thus avoid wasted memory for those unaccessed members. | |
734 | When bodies are allocated, we adjust the pointer back in memory by the | |
735 | size of the bit not allocated, so it's as if we allocated the full | |
736 | structure. (But things will all go boom if you write to the part that | |
737 | is "not there", because you'll be overwriting the last members of the | |
738 | preceding structure in memory.) | |
739 | ||
740 | We calculate the correction using the STRUCT_OFFSET macro. For | |
741 | example, if xpv_allocated is the same structure as XPV then the two | |
742 | OFFSETs sum to zero, and the pointer is unchanged. If the allocated | |
743 | structure is smaller (no initial NV actually allocated) then the net | |
744 | effect is to subtract the size of the NV from the pointer, to return a | |
745 | new pointer as if an initial NV were actually allocated. | |
746 | ||
747 | This is the same trick as was used for NV and IV bodies. Ironically it | |
748 | doesn't need to be used for NV bodies any more, because NV is now at | |
749 | the start of the structure. IV bodies don't need it either, because | |
750 | they are no longer allocated. | |
751 | ||
752 | In turn, the new_body_* allocators call S_new_body(), which invokes | |
753 | new_body_inline macro, which takes a lock, and takes a body off the | |
754 | linked list at PL_body_roots[sv_type], calling S_more_bodies() if | |
755 | necessary to refresh an empty list. Then the lock is released, and | |
756 | the body is returned. | |
757 | ||
758 | S_more_bodies calls get_arena(), and carves it up into an array of N | |
759 | bodies, which it strings into a linked list. It looks up arena-size | |
760 | and body-size from the body_details table described below, thus | |
761 | supporting the multiple body-types. | |
762 | ||
763 | If PURIFY is defined, or PERL_ARENA_SIZE=0, arenas are not used, and | |
764 | the (new|del)_X*V macros are mapped directly to malloc/free. | |
765 | ||
766 | */ | |
767 | ||
768 | /* | |
769 | ||
770 | For each sv-type, struct body_details bodies_by_type[] carries | |
771 | parameters which control these aspects of SV handling: | |
772 | ||
773 | Arena_size determines whether arenas are used for this body type, and if | |
774 | so, how big they are. PURIFY or PERL_ARENA_SIZE=0 set this field to | |
775 | zero, forcing individual mallocs and frees. | |
776 | ||
777 | Body_size determines how big a body is, and therefore how many fit into | |
778 | each arena. Offset carries the body-pointer adjustment needed for | |
779 | *_allocated body types, and is used in *_allocated macros. | |
780 | ||
781 | But its main purpose is to parameterize info needed in | |
782 | Perl_sv_upgrade(). The info here dramatically simplifies the function | |
783 | vs the implementation in 5.8.7, making it table-driven. All fields | |
784 | are used for this, except for arena_size. | |
785 | ||
786 | For the sv-types that have no bodies, arenas are not used, so those | |
787 | PL_body_roots[sv_type] are unused, and can be overloaded. In | |
788 | something of a special case, SVt_NULL is borrowed for HE arenas; | |
c6f8b1d0 | 789 | PL_body_roots[HE_SVSLOT=SVt_NULL] is filled by S_more_he, but the |
d2a0f284 | 790 | bodies_by_type[SVt_NULL] slot is not used, as the table is not |
c6f8b1d0 | 791 | available in hv.c. |
d2a0f284 | 792 | |
c6f8b1d0 JC |
793 | PTEs also use arenas, but are never seen in Perl_sv_upgrade. Nonetheless, |
794 | they get their own slot in bodies_by_type[PTE_SVSLOT =SVt_IV], so they can | |
795 | just use the same allocation semantics. At first, PTEs were also | |
796 | overloaded to a non-body sv-type, but this yielded hard-to-find malloc | |
797 | bugs, so was simplified by claiming a new slot. This choice has no | |
798 | consequence at this time. | |
d2a0f284 | 799 | |
29489e7c DM |
800 | */ |
801 | ||
bd81e77b | 802 | struct body_details { |
0fb58b32 | 803 | U8 body_size; /* Size to allocate */ |
10666ae3 | 804 | U8 copy; /* Size of structure to copy (may be shorter) */ |
0fb58b32 | 805 | U8 offset; |
10666ae3 NC |
806 | unsigned int type : 4; /* We have space for a sanity check. */ |
807 | unsigned int cant_upgrade : 1; /* Cannot upgrade this type */ | |
808 | unsigned int zero_nv : 1; /* zero the NV when upgrading from this */ | |
809 | unsigned int arena : 1; /* Allocated from an arena */ | |
810 | size_t arena_size; /* Size of arena to allocate */ | |
bd81e77b | 811 | }; |
29489e7c | 812 | |
bd81e77b NC |
813 | #define HADNV FALSE |
814 | #define NONV TRUE | |
29489e7c | 815 | |
d2a0f284 | 816 | |
bd81e77b NC |
817 | #ifdef PURIFY |
818 | /* With -DPURFIY we allocate everything directly, and don't use arenas. | |
819 | This seems a rather elegant way to simplify some of the code below. */ | |
820 | #define HASARENA FALSE | |
821 | #else | |
822 | #define HASARENA TRUE | |
823 | #endif | |
824 | #define NOARENA FALSE | |
29489e7c | 825 | |
d2a0f284 JC |
826 | /* Size the arenas to exactly fit a given number of bodies. A count |
827 | of 0 fits the max number bodies into a PERL_ARENA_SIZE.block, | |
828 | simplifying the default. If count > 0, the arena is sized to fit | |
829 | only that many bodies, allowing arenas to be used for large, rare | |
830 | bodies (XPVFM, XPVIO) without undue waste. The arena size is | |
831 | limited by PERL_ARENA_SIZE, so we can safely oversize the | |
832 | declarations. | |
833 | */ | |
95db5f15 MB |
834 | #define FIT_ARENA0(body_size) \ |
835 | ((size_t)(PERL_ARENA_SIZE / body_size) * body_size) | |
836 | #define FIT_ARENAn(count,body_size) \ | |
837 | ( count * body_size <= PERL_ARENA_SIZE) \ | |
838 | ? count * body_size \ | |
839 | : FIT_ARENA0 (body_size) | |
840 | #define FIT_ARENA(count,body_size) \ | |
841 | count \ | |
842 | ? FIT_ARENAn (count, body_size) \ | |
843 | : FIT_ARENA0 (body_size) | |
d2a0f284 | 844 | |
bd81e77b | 845 | /* A macro to work out the offset needed to subtract from a pointer to (say) |
29489e7c | 846 | |
bd81e77b NC |
847 | typedef struct { |
848 | STRLEN xpv_cur; | |
849 | STRLEN xpv_len; | |
850 | } xpv_allocated; | |
29489e7c | 851 | |
bd81e77b | 852 | to make its members accessible via a pointer to (say) |
29489e7c | 853 | |
bd81e77b NC |
854 | struct xpv { |
855 | NV xnv_nv; | |
856 | STRLEN xpv_cur; | |
857 | STRLEN xpv_len; | |
858 | }; | |
29489e7c | 859 | |
bd81e77b | 860 | */ |
29489e7c | 861 | |
bd81e77b NC |
862 | #define relative_STRUCT_OFFSET(longer, shorter, member) \ |
863 | (STRUCT_OFFSET(shorter, member) - STRUCT_OFFSET(longer, member)) | |
29489e7c | 864 | |
bd81e77b NC |
865 | /* Calculate the length to copy. Specifically work out the length less any |
866 | final padding the compiler needed to add. See the comment in sv_upgrade | |
867 | for why copying the padding proved to be a bug. */ | |
29489e7c | 868 | |
bd81e77b NC |
869 | #define copy_length(type, last_member) \ |
870 | STRUCT_OFFSET(type, last_member) \ | |
871 | + sizeof (((type*)SvANY((SV*)0))->last_member) | |
29489e7c | 872 | |
bd81e77b | 873 | static const struct body_details bodies_by_type[] = { |
10666ae3 NC |
874 | { sizeof(HE), 0, 0, SVt_NULL, |
875 | FALSE, NONV, NOARENA, FIT_ARENA(0, sizeof(HE)) }, | |
d2a0f284 | 876 | |
1cb9cd50 | 877 | /* The bind placeholder pretends to be an RV for now. |
c6f8b1d0 | 878 | Also it's marked as "can't upgrade" to stop anyone using it before it's |
1cb9cd50 NC |
879 | implemented. */ |
880 | { 0, 0, 0, SVt_BIND, TRUE, NONV, NOARENA, 0 }, | |
881 | ||
d2a0f284 JC |
882 | /* IVs are in the head, so the allocation size is 0. |
883 | However, the slot is overloaded for PTEs. */ | |
884 | { sizeof(struct ptr_tbl_ent), /* This is used for PTEs. */ | |
885 | sizeof(IV), /* This is used to copy out the IV body. */ | |
10666ae3 | 886 | STRUCT_OFFSET(XPVIV, xiv_iv), SVt_IV, FALSE, NONV, |
d2a0f284 JC |
887 | NOARENA /* IVS don't need an arena */, |
888 | /* But PTEs need to know the size of their arena */ | |
889 | FIT_ARENA(0, sizeof(struct ptr_tbl_ent)) | |
890 | }, | |
891 | ||
bd81e77b | 892 | /* 8 bytes on most ILP32 with IEEE doubles */ |
10666ae3 | 893 | { sizeof(NV), sizeof(NV), 0, SVt_NV, FALSE, HADNV, HASARENA, |
d2a0f284 JC |
894 | FIT_ARENA(0, sizeof(NV)) }, |
895 | ||
896 | /* RVs are in the head now. */ | |
10666ae3 | 897 | { 0, 0, 0, SVt_RV, FALSE, NONV, NOARENA, 0 }, |
d2a0f284 | 898 | |
bd81e77b | 899 | /* 8 bytes on most ILP32 with IEEE doubles */ |
d2a0f284 JC |
900 | { sizeof(xpv_allocated), |
901 | copy_length(XPV, xpv_len) | |
902 | - relative_STRUCT_OFFSET(xpv_allocated, XPV, xpv_cur), | |
903 | + relative_STRUCT_OFFSET(xpv_allocated, XPV, xpv_cur), | |
10666ae3 | 904 | SVt_PV, FALSE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpv_allocated)) }, |
d2a0f284 | 905 | |
bd81e77b | 906 | /* 12 */ |
d2a0f284 JC |
907 | { sizeof(xpviv_allocated), |
908 | copy_length(XPVIV, xiv_u) | |
909 | - relative_STRUCT_OFFSET(xpviv_allocated, XPVIV, xpv_cur), | |
910 | + relative_STRUCT_OFFSET(xpviv_allocated, XPVIV, xpv_cur), | |
10666ae3 | 911 | SVt_PVIV, FALSE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpviv_allocated)) }, |
d2a0f284 | 912 | |
bd81e77b | 913 | /* 20 */ |
10666ae3 | 914 | { sizeof(XPVNV), copy_length(XPVNV, xiv_u), 0, SVt_PVNV, FALSE, HADNV, |
d2a0f284 JC |
915 | HASARENA, FIT_ARENA(0, sizeof(XPVNV)) }, |
916 | ||
bd81e77b | 917 | /* 28 */ |
10666ae3 | 918 | { sizeof(XPVMG), copy_length(XPVMG, xmg_stash), 0, SVt_PVMG, FALSE, HADNV, |
d2a0f284 JC |
919 | HASARENA, FIT_ARENA(0, sizeof(XPVMG)) }, |
920 | ||
bd81e77b | 921 | /* 48 */ |
10666ae3 | 922 | { sizeof(XPVGV), sizeof(XPVGV), 0, SVt_PVGV, TRUE, HADNV, |
d2a0f284 JC |
923 | HASARENA, FIT_ARENA(0, sizeof(XPVGV)) }, |
924 | ||
bd81e77b | 925 | /* 64 */ |
10666ae3 | 926 | { sizeof(XPVLV), sizeof(XPVLV), 0, SVt_PVLV, TRUE, HADNV, |
d2a0f284 JC |
927 | HASARENA, FIT_ARENA(0, sizeof(XPVLV)) }, |
928 | ||
929 | { sizeof(xpvav_allocated), | |
930 | copy_length(XPVAV, xmg_stash) | |
931 | - relative_STRUCT_OFFSET(xpvav_allocated, XPVAV, xav_fill), | |
932 | + relative_STRUCT_OFFSET(xpvav_allocated, XPVAV, xav_fill), | |
9c59bb28 | 933 | SVt_PVAV, TRUE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpvav_allocated)) }, |
d2a0f284 JC |
934 | |
935 | { sizeof(xpvhv_allocated), | |
936 | copy_length(XPVHV, xmg_stash) | |
937 | - relative_STRUCT_OFFSET(xpvhv_allocated, XPVHV, xhv_fill), | |
938 | + relative_STRUCT_OFFSET(xpvhv_allocated, XPVHV, xhv_fill), | |
9c59bb28 | 939 | SVt_PVHV, TRUE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpvhv_allocated)) }, |
d2a0f284 | 940 | |
c84c4652 | 941 | /* 56 */ |
4115f141 | 942 | { sizeof(xpvcv_allocated), sizeof(xpvcv_allocated), |
c84c4652 | 943 | + relative_STRUCT_OFFSET(xpvcv_allocated, XPVCV, xpv_cur), |
10666ae3 | 944 | SVt_PVCV, TRUE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpvcv_allocated)) }, |
d2a0f284 | 945 | |
4115f141 | 946 | { sizeof(xpvfm_allocated), sizeof(xpvfm_allocated), |
3038937b | 947 | + relative_STRUCT_OFFSET(xpvfm_allocated, XPVFM, xpv_cur), |
10666ae3 | 948 | SVt_PVFM, TRUE, NONV, NOARENA, FIT_ARENA(20, sizeof(xpvfm_allocated)) }, |
d2a0f284 JC |
949 | |
950 | /* XPVIO is 84 bytes, fits 48x */ | |
10666ae3 | 951 | { sizeof(XPVIO), sizeof(XPVIO), 0, SVt_PVIO, TRUE, HADNV, |
d2a0f284 | 952 | HASARENA, FIT_ARENA(24, sizeof(XPVIO)) }, |
bd81e77b | 953 | }; |
29489e7c | 954 | |
d2a0f284 JC |
955 | #define new_body_type(sv_type) \ |
956 | (void *)((char *)S_new_body(aTHX_ sv_type)) | |
29489e7c | 957 | |
bd81e77b NC |
958 | #define del_body_type(p, sv_type) \ |
959 | del_body(p, &PL_body_roots[sv_type]) | |
29489e7c | 960 | |
29489e7c | 961 | |
bd81e77b | 962 | #define new_body_allocated(sv_type) \ |
d2a0f284 | 963 | (void *)((char *)S_new_body(aTHX_ sv_type) \ |
bd81e77b | 964 | - bodies_by_type[sv_type].offset) |
29489e7c | 965 | |
bd81e77b NC |
966 | #define del_body_allocated(p, sv_type) \ |
967 | del_body(p + bodies_by_type[sv_type].offset, &PL_body_roots[sv_type]) | |
29489e7c | 968 | |
29489e7c | 969 | |
bd81e77b NC |
970 | #define my_safemalloc(s) (void*)safemalloc(s) |
971 | #define my_safecalloc(s) (void*)safecalloc(s, 1) | |
972 | #define my_safefree(p) safefree((char*)p) | |
29489e7c | 973 | |
bd81e77b | 974 | #ifdef PURIFY |
29489e7c | 975 | |
bd81e77b NC |
976 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
977 | #define del_XNV(p) my_safefree(p) | |
29489e7c | 978 | |
bd81e77b NC |
979 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
980 | #define del_XPVNV(p) my_safefree(p) | |
29489e7c | 981 | |
bd81e77b NC |
982 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
983 | #define del_XPVAV(p) my_safefree(p) | |
29489e7c | 984 | |
bd81e77b NC |
985 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) |
986 | #define del_XPVHV(p) my_safefree(p) | |
29489e7c | 987 | |
bd81e77b NC |
988 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
989 | #define del_XPVMG(p) my_safefree(p) | |
29489e7c | 990 | |
bd81e77b NC |
991 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
992 | #define del_XPVGV(p) my_safefree(p) | |
29489e7c | 993 | |
bd81e77b | 994 | #else /* !PURIFY */ |
29489e7c | 995 | |
bd81e77b NC |
996 | #define new_XNV() new_body_type(SVt_NV) |
997 | #define del_XNV(p) del_body_type(p, SVt_NV) | |
29489e7c | 998 | |
bd81e77b NC |
999 | #define new_XPVNV() new_body_type(SVt_PVNV) |
1000 | #define del_XPVNV(p) del_body_type(p, SVt_PVNV) | |
29489e7c | 1001 | |
bd81e77b NC |
1002 | #define new_XPVAV() new_body_allocated(SVt_PVAV) |
1003 | #define del_XPVAV(p) del_body_allocated(p, SVt_PVAV) | |
645c22ef | 1004 | |
bd81e77b NC |
1005 | #define new_XPVHV() new_body_allocated(SVt_PVHV) |
1006 | #define del_XPVHV(p) del_body_allocated(p, SVt_PVHV) | |
645c22ef | 1007 | |
bd81e77b NC |
1008 | #define new_XPVMG() new_body_type(SVt_PVMG) |
1009 | #define del_XPVMG(p) del_body_type(p, SVt_PVMG) | |
645c22ef | 1010 | |
bd81e77b NC |
1011 | #define new_XPVGV() new_body_type(SVt_PVGV) |
1012 | #define del_XPVGV(p) del_body_type(p, SVt_PVGV) | |
1d7c1841 | 1013 | |
bd81e77b | 1014 | #endif /* PURIFY */ |
93e68bfb | 1015 | |
bd81e77b | 1016 | /* no arena for you! */ |
93e68bfb | 1017 | |
bd81e77b | 1018 | #define new_NOARENA(details) \ |
d2a0f284 | 1019 | my_safemalloc((details)->body_size + (details)->offset) |
bd81e77b | 1020 | #define new_NOARENAZ(details) \ |
d2a0f284 JC |
1021 | my_safecalloc((details)->body_size + (details)->offset) |
1022 | ||
1023 | STATIC void * | |
1024 | S_more_bodies (pTHX_ svtype sv_type) | |
1025 | { | |
1026 | dVAR; | |
1027 | void ** const root = &PL_body_roots[sv_type]; | |
96a5add6 | 1028 | const struct body_details * const bdp = &bodies_by_type[sv_type]; |
d2a0f284 JC |
1029 | const size_t body_size = bdp->body_size; |
1030 | char *start; | |
1031 | const char *end; | |
0b2d3faa | 1032 | #if defined(DEBUGGING) && !defined(PERL_GLOBAL_STRUCT_PRIVATE) |
23e9d66c NC |
1033 | static bool done_sanity_check; |
1034 | ||
0b2d3faa JH |
1035 | /* PERL_GLOBAL_STRUCT_PRIVATE cannot coexist with global |
1036 | * variables like done_sanity_check. */ | |
10666ae3 | 1037 | if (!done_sanity_check) { |
ea471437 | 1038 | unsigned int i = SVt_LAST; |
10666ae3 NC |
1039 | |
1040 | done_sanity_check = TRUE; | |
1041 | ||
1042 | while (i--) | |
1043 | assert (bodies_by_type[i].type == i); | |
1044 | } | |
1045 | #endif | |
1046 | ||
23e9d66c NC |
1047 | assert(bdp->arena_size); |
1048 | ||
0a848332 | 1049 | start = (char*) Perl_get_arena(aTHX_ bdp->arena_size, sv_type); |
d2a0f284 JC |
1050 | |
1051 | end = start + bdp->arena_size - body_size; | |
1052 | ||
d2a0f284 JC |
1053 | /* computed count doesnt reflect the 1st slot reservation */ |
1054 | DEBUG_m(PerlIO_printf(Perl_debug_log, | |
1055 | "arena %p end %p arena-size %d type %d size %d ct %d\n", | |
6c9570dc | 1056 | (void*)start, (void*)end, |
0e84aef4 JH |
1057 | (int)bdp->arena_size, sv_type, (int)body_size, |
1058 | (int)bdp->arena_size / (int)body_size)); | |
d2a0f284 JC |
1059 | |
1060 | *root = (void *)start; | |
1061 | ||
1062 | while (start < end) { | |
1063 | char * const next = start + body_size; | |
1064 | *(void**) start = (void *)next; | |
1065 | start = next; | |
1066 | } | |
1067 | *(void **)start = 0; | |
1068 | ||
1069 | return *root; | |
1070 | } | |
1071 | ||
1072 | /* grab a new thing from the free list, allocating more if necessary. | |
1073 | The inline version is used for speed in hot routines, and the | |
1074 | function using it serves the rest (unless PURIFY). | |
1075 | */ | |
1076 | #define new_body_inline(xpv, sv_type) \ | |
1077 | STMT_START { \ | |
1078 | void ** const r3wt = &PL_body_roots[sv_type]; \ | |
11b79775 DD |
1079 | xpv = (PTR_TBL_ENT_t*) (*((void **)(r3wt)) \ |
1080 | ? *((void **)(r3wt)) : more_bodies(sv_type)); \ | |
d2a0f284 | 1081 | *(r3wt) = *(void**)(xpv); \ |
d2a0f284 JC |
1082 | } STMT_END |
1083 | ||
1084 | #ifndef PURIFY | |
1085 | ||
1086 | STATIC void * | |
1087 | S_new_body(pTHX_ svtype sv_type) | |
1088 | { | |
1089 | dVAR; | |
1090 | void *xpv; | |
1091 | new_body_inline(xpv, sv_type); | |
1092 | return xpv; | |
1093 | } | |
1094 | ||
1095 | #endif | |
93e68bfb | 1096 | |
bd81e77b NC |
1097 | /* |
1098 | =for apidoc sv_upgrade | |
93e68bfb | 1099 | |
bd81e77b NC |
1100 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
1101 | SV, then copies across as much information as possible from the old body. | |
1102 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. | |
93e68bfb | 1103 | |
bd81e77b | 1104 | =cut |
93e68bfb | 1105 | */ |
93e68bfb | 1106 | |
bd81e77b | 1107 | void |
42d0e0b7 | 1108 | Perl_sv_upgrade(pTHX_ register SV *sv, svtype new_type) |
cac9b346 | 1109 | { |
97aff369 | 1110 | dVAR; |
bd81e77b NC |
1111 | void* old_body; |
1112 | void* new_body; | |
42d0e0b7 | 1113 | const svtype old_type = SvTYPE(sv); |
d2a0f284 | 1114 | const struct body_details *new_type_details; |
bd81e77b NC |
1115 | const struct body_details *const old_type_details |
1116 | = bodies_by_type + old_type; | |
cac9b346 | 1117 | |
bd81e77b NC |
1118 | if (new_type != SVt_PV && SvIsCOW(sv)) { |
1119 | sv_force_normal_flags(sv, 0); | |
1120 | } | |
cac9b346 | 1121 | |
bd81e77b NC |
1122 | if (old_type == new_type) |
1123 | return; | |
cac9b346 | 1124 | |
bd81e77b NC |
1125 | if (old_type > new_type) |
1126 | Perl_croak(aTHX_ "sv_upgrade from type %d down to type %d", | |
1127 | (int)old_type, (int)new_type); | |
cac9b346 | 1128 | |
cac9b346 | 1129 | |
bd81e77b | 1130 | old_body = SvANY(sv); |
de042e1d | 1131 | |
bd81e77b NC |
1132 | /* Copying structures onto other structures that have been neatly zeroed |
1133 | has a subtle gotcha. Consider XPVMG | |
cac9b346 | 1134 | |
bd81e77b NC |
1135 | +------+------+------+------+------+-------+-------+ |
1136 | | NV | CUR | LEN | IV | MAGIC | STASH | | |
1137 | +------+------+------+------+------+-------+-------+ | |
1138 | 0 4 8 12 16 20 24 28 | |
645c22ef | 1139 | |
bd81e77b NC |
1140 | where NVs are aligned to 8 bytes, so that sizeof that structure is |
1141 | actually 32 bytes long, with 4 bytes of padding at the end: | |
08742458 | 1142 | |
bd81e77b NC |
1143 | +------+------+------+------+------+-------+-------+------+ |
1144 | | NV | CUR | LEN | IV | MAGIC | STASH | ??? | | |
1145 | +------+------+------+------+------+-------+-------+------+ | |
1146 | 0 4 8 12 16 20 24 28 32 | |
08742458 | 1147 | |
bd81e77b | 1148 | so what happens if you allocate memory for this structure: |
30f9da9e | 1149 | |
bd81e77b NC |
1150 | +------+------+------+------+------+-------+-------+------+------+... |
1151 | | NV | CUR | LEN | IV | MAGIC | STASH | GP | NAME | | |
1152 | +------+------+------+------+------+-------+-------+------+------+... | |
1153 | 0 4 8 12 16 20 24 28 32 36 | |
bfc44f79 | 1154 | |
bd81e77b NC |
1155 | zero it, then copy sizeof(XPVMG) bytes on top of it? Not quite what you |
1156 | expect, because you copy the area marked ??? onto GP. Now, ??? may have | |
1157 | started out as zero once, but it's quite possible that it isn't. So now, | |
1158 | rather than a nicely zeroed GP, you have it pointing somewhere random. | |
1159 | Bugs ensue. | |
bfc44f79 | 1160 | |
bd81e77b NC |
1161 | (In fact, GP ends up pointing at a previous GP structure, because the |
1162 | principle cause of the padding in XPVMG getting garbage is a copy of | |
6c9e42f7 NC |
1163 | sizeof(XPVMG) bytes from a XPVGV structure in sv_unglob. Right now |
1164 | this happens to be moot because XPVGV has been re-ordered, with GP | |
1165 | no longer after STASH) | |
30f9da9e | 1166 | |
bd81e77b NC |
1167 | So we are careful and work out the size of used parts of all the |
1168 | structures. */ | |
bfc44f79 | 1169 | |
bd81e77b NC |
1170 | switch (old_type) { |
1171 | case SVt_NULL: | |
1172 | break; | |
1173 | case SVt_IV: | |
1174 | if (new_type < SVt_PVIV) { | |
1175 | new_type = (new_type == SVt_NV) | |
1176 | ? SVt_PVNV : SVt_PVIV; | |
bd81e77b NC |
1177 | } |
1178 | break; | |
1179 | case SVt_NV: | |
1180 | if (new_type < SVt_PVNV) { | |
1181 | new_type = SVt_PVNV; | |
bd81e77b NC |
1182 | } |
1183 | break; | |
1184 | case SVt_RV: | |
1185 | break; | |
1186 | case SVt_PV: | |
1187 | assert(new_type > SVt_PV); | |
1188 | assert(SVt_IV < SVt_PV); | |
1189 | assert(SVt_NV < SVt_PV); | |
1190 | break; | |
1191 | case SVt_PVIV: | |
1192 | break; | |
1193 | case SVt_PVNV: | |
1194 | break; | |
1195 | case SVt_PVMG: | |
1196 | /* Because the XPVMG of PL_mess_sv isn't allocated from the arena, | |
1197 | there's no way that it can be safely upgraded, because perl.c | |
1198 | expects to Safefree(SvANY(PL_mess_sv)) */ | |
1199 | assert(sv != PL_mess_sv); | |
1200 | /* This flag bit is used to mean other things in other scalar types. | |
1201 | Given that it only has meaning inside the pad, it shouldn't be set | |
1202 | on anything that can get upgraded. */ | |
00b1698f | 1203 | assert(!SvPAD_TYPED(sv)); |
bd81e77b NC |
1204 | break; |
1205 | default: | |
1206 | if (old_type_details->cant_upgrade) | |
c81225bc NC |
1207 | Perl_croak(aTHX_ "Can't upgrade %s (%" UVuf ") to %" UVuf, |
1208 | sv_reftype(sv, 0), (UV) old_type, (UV) new_type); | |
bd81e77b | 1209 | } |
2fa1109b | 1210 | new_type_details = bodies_by_type + new_type; |
645c22ef | 1211 | |
bd81e77b NC |
1212 | SvFLAGS(sv) &= ~SVTYPEMASK; |
1213 | SvFLAGS(sv) |= new_type; | |
932e9ff9 | 1214 | |
ab4416c0 NC |
1215 | /* This can't happen, as SVt_NULL is <= all values of new_type, so one of |
1216 | the return statements above will have triggered. */ | |
1217 | assert (new_type != SVt_NULL); | |
bd81e77b | 1218 | switch (new_type) { |
bd81e77b NC |
1219 | case SVt_IV: |
1220 | assert(old_type == SVt_NULL); | |
1221 | SvANY(sv) = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); | |
1222 | SvIV_set(sv, 0); | |
1223 | return; | |
1224 | case SVt_NV: | |
1225 | assert(old_type == SVt_NULL); | |
1226 | SvANY(sv) = new_XNV(); | |
1227 | SvNV_set(sv, 0); | |
1228 | return; | |
1229 | case SVt_RV: | |
1230 | assert(old_type == SVt_NULL); | |
1231 | SvANY(sv) = &sv->sv_u.svu_rv; | |
1232 | SvRV_set(sv, 0); | |
1233 | return; | |
1234 | case SVt_PVHV: | |
bd81e77b | 1235 | case SVt_PVAV: |
d2a0f284 | 1236 | assert(new_type_details->body_size); |
c1ae03ae NC |
1237 | |
1238 | #ifndef PURIFY | |
1239 | assert(new_type_details->arena); | |
d2a0f284 | 1240 | assert(new_type_details->arena_size); |
c1ae03ae | 1241 | /* This points to the start of the allocated area. */ |
d2a0f284 JC |
1242 | new_body_inline(new_body, new_type); |
1243 | Zero(new_body, new_type_details->body_size, char); | |
c1ae03ae NC |
1244 | new_body = ((char *)new_body) - new_type_details->offset; |
1245 | #else | |
1246 | /* We always allocated the full length item with PURIFY. To do this | |
1247 | we fake things so that arena is false for all 16 types.. */ | |
1248 | new_body = new_NOARENAZ(new_type_details); | |
1249 | #endif | |
1250 | SvANY(sv) = new_body; | |
1251 | if (new_type == SVt_PVAV) { | |
1252 | AvMAX(sv) = -1; | |
1253 | AvFILLp(sv) = -1; | |
1254 | AvREAL_only(sv); | |
1255 | } | |
aeb18a1e | 1256 | |
bd81e77b NC |
1257 | /* SVt_NULL isn't the only thing upgraded to AV or HV. |
1258 | The target created by newSVrv also is, and it can have magic. | |
1259 | However, it never has SvPVX set. | |
1260 | */ | |
1261 | if (old_type >= SVt_RV) { | |
1262 | assert(SvPVX_const(sv) == 0); | |
1263 | } | |
aeb18a1e | 1264 | |
bd81e77b | 1265 | if (old_type >= SVt_PVMG) { |
e736a858 | 1266 | SvMAGIC_set(sv, ((XPVMG*)old_body)->xmg_u.xmg_magic); |
bd81e77b | 1267 | SvSTASH_set(sv, ((XPVMG*)old_body)->xmg_stash); |
797c7171 NC |
1268 | } else { |
1269 | sv->sv_u.svu_array = NULL; /* or svu_hash */ | |
bd81e77b NC |
1270 | } |
1271 | break; | |
93e68bfb | 1272 | |
93e68bfb | 1273 | |
bd81e77b NC |
1274 | case SVt_PVIV: |
1275 | /* XXX Is this still needed? Was it ever needed? Surely as there is | |
1276 | no route from NV to PVIV, NOK can never be true */ | |
1277 | assert(!SvNOKp(sv)); | |
1278 | assert(!SvNOK(sv)); | |
1279 | case SVt_PVIO: | |
1280 | case SVt_PVFM: | |
bd81e77b NC |
1281 | case SVt_PVGV: |
1282 | case SVt_PVCV: | |
1283 | case SVt_PVLV: | |
1284 | case SVt_PVMG: | |
1285 | case SVt_PVNV: | |
1286 | case SVt_PV: | |
93e68bfb | 1287 | |
d2a0f284 | 1288 | assert(new_type_details->body_size); |
bd81e77b NC |
1289 | /* We always allocated the full length item with PURIFY. To do this |
1290 | we fake things so that arena is false for all 16 types.. */ | |
1291 | if(new_type_details->arena) { | |
1292 | /* This points to the start of the allocated area. */ | |
d2a0f284 JC |
1293 | new_body_inline(new_body, new_type); |
1294 | Zero(new_body, new_type_details->body_size, char); | |
bd81e77b NC |
1295 | new_body = ((char *)new_body) - new_type_details->offset; |
1296 | } else { | |
1297 | new_body = new_NOARENAZ(new_type_details); | |
1298 | } | |
1299 | SvANY(sv) = new_body; | |
5e2fc214 | 1300 | |
bd81e77b | 1301 | if (old_type_details->copy) { |
f9ba3d20 NC |
1302 | /* There is now the potential for an upgrade from something without |
1303 | an offset (PVNV or PVMG) to something with one (PVCV, PVFM) */ | |
1304 | int offset = old_type_details->offset; | |
1305 | int length = old_type_details->copy; | |
1306 | ||
1307 | if (new_type_details->offset > old_type_details->offset) { | |
d4c19fe8 | 1308 | const int difference |
f9ba3d20 NC |
1309 | = new_type_details->offset - old_type_details->offset; |
1310 | offset += difference; | |
1311 | length -= difference; | |
1312 | } | |
1313 | assert (length >= 0); | |
1314 | ||
1315 | Copy((char *)old_body + offset, (char *)new_body + offset, length, | |
1316 | char); | |
bd81e77b NC |
1317 | } |
1318 | ||
1319 | #ifndef NV_ZERO_IS_ALLBITS_ZERO | |
f2524eef | 1320 | /* If NV 0.0 is stores as all bits 0 then Zero() already creates a |
e5ce394c NC |
1321 | * correct 0.0 for us. Otherwise, if the old body didn't have an |
1322 | * NV slot, but the new one does, then we need to initialise the | |
1323 | * freshly created NV slot with whatever the correct bit pattern is | |
1324 | * for 0.0 */ | |
e22a937e NC |
1325 | if (old_type_details->zero_nv && !new_type_details->zero_nv |
1326 | && !isGV_with_GP(sv)) | |
bd81e77b | 1327 | SvNV_set(sv, 0); |
82048762 | 1328 | #endif |
5e2fc214 | 1329 | |
bd81e77b | 1330 | if (new_type == SVt_PVIO) |
f2524eef | 1331 | IoPAGE_LEN(sv) = 60; |
bd81e77b | 1332 | if (old_type < SVt_RV) |
6136c704 | 1333 | SvPV_set(sv, NULL); |
bd81e77b NC |
1334 | break; |
1335 | default: | |
afd78fd5 JH |
1336 | Perl_croak(aTHX_ "panic: sv_upgrade to unknown type %lu", |
1337 | (unsigned long)new_type); | |
bd81e77b | 1338 | } |
73171d91 | 1339 | |
d2a0f284 JC |
1340 | if (old_type_details->arena) { |
1341 | /* If there was an old body, then we need to free it. | |
1342 | Note that there is an assumption that all bodies of types that | |
1343 | can be upgraded came from arenas. Only the more complex non- | |
1344 | upgradable types are allowed to be directly malloc()ed. */ | |
bd81e77b NC |
1345 | #ifdef PURIFY |
1346 | my_safefree(old_body); | |
1347 | #else | |
1348 | del_body((void*)((char*)old_body + old_type_details->offset), | |
1349 | &PL_body_roots[old_type]); | |
1350 | #endif | |
1351 | } | |
1352 | } | |
73171d91 | 1353 | |
bd81e77b NC |
1354 | /* |
1355 | =for apidoc sv_backoff | |
73171d91 | 1356 | |
bd81e77b NC |
1357 | Remove any string offset. You should normally use the C<SvOOK_off> macro |
1358 | wrapper instead. | |
73171d91 | 1359 | |
bd81e77b | 1360 | =cut |
73171d91 NC |
1361 | */ |
1362 | ||
bd81e77b NC |
1363 | int |
1364 | Perl_sv_backoff(pTHX_ register SV *sv) | |
1365 | { | |
96a5add6 | 1366 | PERL_UNUSED_CONTEXT; |
bd81e77b NC |
1367 | assert(SvOOK(sv)); |
1368 | assert(SvTYPE(sv) != SVt_PVHV); | |
1369 | assert(SvTYPE(sv) != SVt_PVAV); | |
1370 | if (SvIVX(sv)) { | |
1371 | const char * const s = SvPVX_const(sv); | |
1372 | SvLEN_set(sv, SvLEN(sv) + SvIVX(sv)); | |
1373 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); | |
1374 | SvIV_set(sv, 0); | |
1375 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); | |
1376 | } | |
1377 | SvFLAGS(sv) &= ~SVf_OOK; | |
1378 | return 0; | |
1379 | } | |
73171d91 | 1380 | |
bd81e77b NC |
1381 | /* |
1382 | =for apidoc sv_grow | |
73171d91 | 1383 | |
bd81e77b NC |
1384 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
1385 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
1386 | Use the C<SvGROW> wrapper instead. | |
93e68bfb | 1387 | |
bd81e77b NC |
1388 | =cut |
1389 | */ | |
93e68bfb | 1390 | |
bd81e77b NC |
1391 | char * |
1392 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) | |
1393 | { | |
1394 | register char *s; | |
93e68bfb | 1395 | |
5db06880 NC |
1396 | if (PL_madskills && newlen >= 0x100000) { |
1397 | PerlIO_printf(Perl_debug_log, | |
1398 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
1399 | } | |
bd81e77b NC |
1400 | #ifdef HAS_64K_LIMIT |
1401 | if (newlen >= 0x10000) { | |
1402 | PerlIO_printf(Perl_debug_log, | |
1403 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
1404 | my_exit(1); | |
1405 | } | |
1406 | #endif /* HAS_64K_LIMIT */ | |
1407 | if (SvROK(sv)) | |
1408 | sv_unref(sv); | |
1409 | if (SvTYPE(sv) < SVt_PV) { | |
1410 | sv_upgrade(sv, SVt_PV); | |
1411 | s = SvPVX_mutable(sv); | |
1412 | } | |
1413 | else if (SvOOK(sv)) { /* pv is offset? */ | |
1414 | sv_backoff(sv); | |
1415 | s = SvPVX_mutable(sv); | |
1416 | if (newlen > SvLEN(sv)) | |
1417 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
1418 | #ifdef HAS_64K_LIMIT | |
1419 | if (newlen >= 0x10000) | |
1420 | newlen = 0xFFFF; | |
1421 | #endif | |
1422 | } | |
1423 | else | |
1424 | s = SvPVX_mutable(sv); | |
aeb18a1e | 1425 | |
bd81e77b NC |
1426 | if (newlen > SvLEN(sv)) { /* need more room? */ |
1427 | newlen = PERL_STRLEN_ROUNDUP(newlen); | |
1428 | if (SvLEN(sv) && s) { | |
1429 | #ifdef MYMALLOC | |
1430 | const STRLEN l = malloced_size((void*)SvPVX_const(sv)); | |
1431 | if (newlen <= l) { | |
1432 | SvLEN_set(sv, l); | |
1433 | return s; | |
1434 | } else | |
1435 | #endif | |
10edeb5d | 1436 | s = (char*)saferealloc(s, newlen); |
bd81e77b NC |
1437 | } |
1438 | else { | |
10edeb5d | 1439 | s = (char*)safemalloc(newlen); |
bd81e77b NC |
1440 | if (SvPVX_const(sv) && SvCUR(sv)) { |
1441 | Move(SvPVX_const(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); | |
1442 | } | |
1443 | } | |
1444 | SvPV_set(sv, s); | |
1445 | SvLEN_set(sv, newlen); | |
1446 | } | |
1447 | return s; | |
1448 | } | |
aeb18a1e | 1449 | |
bd81e77b NC |
1450 | /* |
1451 | =for apidoc sv_setiv | |
932e9ff9 | 1452 | |
bd81e77b NC |
1453 | Copies an integer into the given SV, upgrading first if necessary. |
1454 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
463ee0b2 | 1455 | |
bd81e77b NC |
1456 | =cut |
1457 | */ | |
463ee0b2 | 1458 | |
bd81e77b NC |
1459 | void |
1460 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) | |
1461 | { | |
97aff369 | 1462 | dVAR; |
bd81e77b NC |
1463 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
1464 | switch (SvTYPE(sv)) { | |
1465 | case SVt_NULL: | |
1466 | sv_upgrade(sv, SVt_IV); | |
1467 | break; | |
1468 | case SVt_NV: | |
1469 | sv_upgrade(sv, SVt_PVNV); | |
1470 | break; | |
1471 | case SVt_RV: | |
1472 | case SVt_PV: | |
1473 | sv_upgrade(sv, SVt_PVIV); | |
1474 | break; | |
463ee0b2 | 1475 | |
bd81e77b NC |
1476 | case SVt_PVGV: |
1477 | case SVt_PVAV: | |
1478 | case SVt_PVHV: | |
1479 | case SVt_PVCV: | |
1480 | case SVt_PVFM: | |
1481 | case SVt_PVIO: | |
1482 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), | |
1483 | OP_DESC(PL_op)); | |
42d0e0b7 | 1484 | default: NOOP; |
bd81e77b NC |
1485 | } |
1486 | (void)SvIOK_only(sv); /* validate number */ | |
1487 | SvIV_set(sv, i); | |
1488 | SvTAINT(sv); | |
1489 | } | |
932e9ff9 | 1490 | |
bd81e77b NC |
1491 | /* |
1492 | =for apidoc sv_setiv_mg | |
d33b2eba | 1493 | |
bd81e77b | 1494 | Like C<sv_setiv>, but also handles 'set' magic. |
1c846c1f | 1495 | |
bd81e77b NC |
1496 | =cut |
1497 | */ | |
d33b2eba | 1498 | |
bd81e77b NC |
1499 | void |
1500 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) | |
1501 | { | |
1502 | sv_setiv(sv,i); | |
1503 | SvSETMAGIC(sv); | |
1504 | } | |
727879eb | 1505 | |
bd81e77b NC |
1506 | /* |
1507 | =for apidoc sv_setuv | |
d33b2eba | 1508 | |
bd81e77b NC |
1509 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
1510 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
9b94d1dd | 1511 | |
bd81e77b NC |
1512 | =cut |
1513 | */ | |
d33b2eba | 1514 | |
bd81e77b NC |
1515 | void |
1516 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) | |
1517 | { | |
1518 | /* With these two if statements: | |
1519 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d33b2eba | 1520 | |
bd81e77b NC |
1521 | without |
1522 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
1c846c1f | 1523 | |
bd81e77b NC |
1524 | If you wish to remove them, please benchmark to see what the effect is |
1525 | */ | |
1526 | if (u <= (UV)IV_MAX) { | |
1527 | sv_setiv(sv, (IV)u); | |
1528 | return; | |
1529 | } | |
1530 | sv_setiv(sv, 0); | |
1531 | SvIsUV_on(sv); | |
1532 | SvUV_set(sv, u); | |
1533 | } | |
d33b2eba | 1534 | |
bd81e77b NC |
1535 | /* |
1536 | =for apidoc sv_setuv_mg | |
727879eb | 1537 | |
bd81e77b | 1538 | Like C<sv_setuv>, but also handles 'set' magic. |
9b94d1dd | 1539 | |
bd81e77b NC |
1540 | =cut |
1541 | */ | |
5e2fc214 | 1542 | |
bd81e77b NC |
1543 | void |
1544 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) | |
1545 | { | |
bd81e77b NC |
1546 | sv_setuv(sv,u); |
1547 | SvSETMAGIC(sv); | |
1548 | } | |
5e2fc214 | 1549 | |
954c1994 | 1550 | /* |
bd81e77b | 1551 | =for apidoc sv_setnv |
954c1994 | 1552 | |
bd81e77b NC |
1553 | Copies a double into the given SV, upgrading first if necessary. |
1554 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
1555 | |
1556 | =cut | |
1557 | */ | |
1558 | ||
63f97190 | 1559 | void |
bd81e77b | 1560 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 1561 | { |
97aff369 | 1562 | dVAR; |
bd81e77b NC |
1563 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
1564 | switch (SvTYPE(sv)) { | |
79072805 | 1565 | case SVt_NULL: |
79072805 | 1566 | case SVt_IV: |
bd81e77b | 1567 | sv_upgrade(sv, SVt_NV); |
79072805 | 1568 | break; |
ed6116ce | 1569 | case SVt_RV: |
79072805 | 1570 | case SVt_PV: |
79072805 | 1571 | case SVt_PVIV: |
bd81e77b | 1572 | sv_upgrade(sv, SVt_PVNV); |
79072805 | 1573 | break; |
bd4b1eb5 | 1574 | |
bd4b1eb5 | 1575 | case SVt_PVGV: |
bd81e77b NC |
1576 | case SVt_PVAV: |
1577 | case SVt_PVHV: | |
79072805 | 1578 | case SVt_PVCV: |
bd81e77b NC |
1579 | case SVt_PVFM: |
1580 | case SVt_PVIO: | |
1581 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), | |
1582 | OP_NAME(PL_op)); | |
42d0e0b7 | 1583 | default: NOOP; |
2068cd4d | 1584 | } |
bd81e77b NC |
1585 | SvNV_set(sv, num); |
1586 | (void)SvNOK_only(sv); /* validate number */ | |
1587 | SvTAINT(sv); | |
79072805 LW |
1588 | } |
1589 | ||
645c22ef | 1590 | /* |
bd81e77b | 1591 | =for apidoc sv_setnv_mg |
645c22ef | 1592 | |
bd81e77b | 1593 | Like C<sv_setnv>, but also handles 'set' magic. |
645c22ef DM |
1594 | |
1595 | =cut | |
1596 | */ | |
1597 | ||
bd81e77b NC |
1598 | void |
1599 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) | |
79072805 | 1600 | { |
bd81e77b NC |
1601 | sv_setnv(sv,num); |
1602 | SvSETMAGIC(sv); | |
79072805 LW |
1603 | } |
1604 | ||
bd81e77b NC |
1605 | /* Print an "isn't numeric" warning, using a cleaned-up, |
1606 | * printable version of the offending string | |
1607 | */ | |
954c1994 | 1608 | |
bd81e77b NC |
1609 | STATIC void |
1610 | S_not_a_number(pTHX_ SV *sv) | |
79072805 | 1611 | { |
97aff369 | 1612 | dVAR; |
bd81e77b NC |
1613 | SV *dsv; |
1614 | char tmpbuf[64]; | |
1615 | const char *pv; | |
94463019 JH |
1616 | |
1617 | if (DO_UTF8(sv)) { | |
396482e1 | 1618 | dsv = sv_2mortal(newSVpvs("")); |
94463019 JH |
1619 | pv = sv_uni_display(dsv, sv, 10, 0); |
1620 | } else { | |
1621 | char *d = tmpbuf; | |
551405c4 | 1622 | const char * const limit = tmpbuf + sizeof(tmpbuf) - 8; |
94463019 JH |
1623 | /* each *s can expand to 4 chars + "...\0", |
1624 | i.e. need room for 8 chars */ | |
ecdeb87c | 1625 | |
00b6aa41 AL |
1626 | const char *s = SvPVX_const(sv); |
1627 | const char * const end = s + SvCUR(sv); | |
1628 | for ( ; s < end && d < limit; s++ ) { | |
94463019 JH |
1629 | int ch = *s & 0xFF; |
1630 | if (ch & 128 && !isPRINT_LC(ch)) { | |
1631 | *d++ = 'M'; | |
1632 | *d++ = '-'; | |
1633 | ch &= 127; | |
1634 | } | |
1635 | if (ch == '\n') { | |
1636 | *d++ = '\\'; | |
1637 | *d++ = 'n'; | |
1638 | } | |
1639 | else if (ch == '\r') { | |
1640 | *d++ = '\\'; | |
1641 | *d++ = 'r'; | |
1642 | } | |
1643 | else if (ch == '\f') { | |
1644 | *d++ = '\\'; | |
1645 | *d++ = 'f'; | |
1646 | } | |
1647 | else if (ch == '\\') { | |
1648 | *d++ = '\\'; | |
1649 | *d++ = '\\'; | |
1650 | } | |
1651 | else if (ch == '\0') { | |
1652 | *d++ = '\\'; | |
1653 | *d++ = '0'; | |
1654 | } | |
1655 | else if (isPRINT_LC(ch)) | |
1656 | *d++ = ch; | |
1657 | else { | |
1658 | *d++ = '^'; | |
1659 | *d++ = toCTRL(ch); | |
1660 | } | |
1661 | } | |
1662 | if (s < end) { | |
1663 | *d++ = '.'; | |
1664 | *d++ = '.'; | |
1665 | *d++ = '.'; | |
1666 | } | |
1667 | *d = '\0'; | |
1668 | pv = tmpbuf; | |
a0d0e21e | 1669 | } |
a0d0e21e | 1670 | |
533c011a | 1671 | if (PL_op) |
9014280d | 1672 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
1673 | "Argument \"%s\" isn't numeric in %s", pv, |
1674 | OP_DESC(PL_op)); | |
a0d0e21e | 1675 | else |
9014280d | 1676 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 1677 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
1678 | } |
1679 | ||
c2988b20 NC |
1680 | /* |
1681 | =for apidoc looks_like_number | |
1682 | ||
645c22ef DM |
1683 | Test if the content of an SV looks like a number (or is a number). |
1684 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
1685 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
1686 | |
1687 | =cut | |
1688 | */ | |
1689 | ||
1690 | I32 | |
1691 | Perl_looks_like_number(pTHX_ SV *sv) | |
1692 | { | |
a3b680e6 | 1693 | register const char *sbegin; |
c2988b20 NC |
1694 | STRLEN len; |
1695 | ||
1696 | if (SvPOK(sv)) { | |
3f7c398e | 1697 | sbegin = SvPVX_const(sv); |
c2988b20 NC |
1698 | len = SvCUR(sv); |
1699 | } | |
1700 | else if (SvPOKp(sv)) | |
83003860 | 1701 | sbegin = SvPV_const(sv, len); |
c2988b20 | 1702 | else |
e0ab1c0e | 1703 | return SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK); |
c2988b20 NC |
1704 | return grok_number(sbegin, len, NULL); |
1705 | } | |
25da4f38 | 1706 | |
19f6321d NC |
1707 | STATIC bool |
1708 | S_glob_2number(pTHX_ GV * const gv) | |
180488f8 NC |
1709 | { |
1710 | const U32 wasfake = SvFLAGS(gv) & SVf_FAKE; | |
1711 | SV *const buffer = sv_newmortal(); | |
1712 | ||
1713 | /* FAKE globs can get coerced, so need to turn this off temporarily if it | |
1714 | is on. */ | |
1715 | SvFAKE_off(gv); | |
1716 | gv_efullname3(buffer, gv, "*"); | |
1717 | SvFLAGS(gv) |= wasfake; | |
1718 | ||
675c862f AL |
1719 | /* We know that all GVs stringify to something that is not-a-number, |
1720 | so no need to test that. */ | |
1721 | if (ckWARN(WARN_NUMERIC)) | |
1722 | not_a_number(buffer); | |
1723 | /* We just want something true to return, so that S_sv_2iuv_common | |
1724 | can tail call us and return true. */ | |
19f6321d | 1725 | return TRUE; |
675c862f AL |
1726 | } |
1727 | ||
1728 | STATIC char * | |
19f6321d | 1729 | S_glob_2pv(pTHX_ GV * const gv, STRLEN * const len) |
675c862f AL |
1730 | { |
1731 | const U32 wasfake = SvFLAGS(gv) & SVf_FAKE; | |
1732 | SV *const buffer = sv_newmortal(); | |
1733 | ||
1734 | /* FAKE globs can get coerced, so need to turn this off temporarily if it | |
1735 | is on. */ | |
1736 | SvFAKE_off(gv); | |
1737 | gv_efullname3(buffer, gv, "*"); | |
1738 | SvFLAGS(gv) |= wasfake; | |
1739 | ||
1740 | assert(SvPOK(buffer)); | |
a6d61a6c NC |
1741 | if (len) { |
1742 | *len = SvCUR(buffer); | |
1743 | } | |
675c862f | 1744 | return SvPVX(buffer); |
180488f8 NC |
1745 | } |
1746 | ||
25da4f38 IZ |
1747 | /* Actually, ISO C leaves conversion of UV to IV undefined, but |
1748 | until proven guilty, assume that things are not that bad... */ | |
1749 | ||
645c22ef DM |
1750 | /* |
1751 | NV_PRESERVES_UV: | |
1752 | ||
1753 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
1754 | an IV (an assumption perl has been based on to date) it becomes necessary |
1755 | to remove the assumption that the NV always carries enough precision to | |
1756 | recreate the IV whenever needed, and that the NV is the canonical form. | |
1757 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 1758 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
1759 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
1760 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
1761 | conversion where precision was lost and IV/UV/NV slots that have a | |
1762 | valid conversion which has lost no precision | |
645c22ef | 1763 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
1764 | would lose precision, the precise conversion (or differently |
1765 | imprecise conversion) is also performed and cached, to prevent | |
1766 | requests for different numeric formats on the same SV causing | |
1767 | lossy conversion chains. (lossless conversion chains are perfectly | |
1768 | acceptable (still)) | |
1769 | ||
1770 | ||
1771 | flags are used: | |
1772 | SvIOKp is true if the IV slot contains a valid value | |
1773 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
1774 | SvNOKp is true if the NV slot contains a valid value | |
1775 | SvNOK is true only if the NV value is accurate | |
1776 | ||
1777 | so | |
645c22ef | 1778 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
1779 | IV(or UV) would lose accuracy over a direct conversion from PV to |
1780 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
1781 | SV as IOK NOKp (ie not NOK). | |
1782 | ||
645c22ef | 1783 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
1784 | NV would lose accuracy over a direct conversion from PV to NV. If it |
1785 | would, cache both conversions, flag similarly. | |
1786 | ||
1787 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
1788 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
1789 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
1790 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 1791 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 1792 | |
645c22ef DM |
1793 | The benefit of this is that operations such as pp_add know that if |
1794 | SvIOK is true for both left and right operands, then integer addition | |
1795 | can be used instead of floating point (for cases where the result won't | |
1796 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
1797 | loss of precision compared with integer addition. |
1798 | ||
1799 | * making IV and NV equal status should make maths accurate on 64 bit | |
1800 | platforms | |
1801 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 1802 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
1803 | looking for SvIOK and checking for overflow will not outweigh the |
1804 | fp to integer speedup) | |
1805 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
1806 | values, as the change from SvIOK to SvIOKp will cause a call into | |
1807 | sv_2iv each time rather than a macro access direct to the IV slot | |
1808 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 1809 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
1810 | |
1811 | #################################################################### | |
645c22ef DM |
1812 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
1813 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
1814 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
1815 | #################################################################### |
1816 | ||
645c22ef | 1817 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
1818 | performance ratio. |
1819 | */ | |
1820 | ||
1821 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
1822 | # define IS_NUMBER_UNDERFLOW_IV 1 |
1823 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
1824 | # define IS_NUMBER_IV_AND_UV 2 | |
1825 | # define IS_NUMBER_OVERFLOW_IV 4 | |
1826 | # define IS_NUMBER_OVERFLOW_UV 5 | |
1827 | ||
1828 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
1829 | |
1830 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
1831 | STATIC int | |
645c22ef | 1832 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 1833 | { |
97aff369 | 1834 | dVAR; |
b57a0404 | 1835 | PERL_UNUSED_ARG(numtype); /* Used only under DEBUGGING? */ |
3f7c398e | 1836 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2iuv_non '%s', IV=0x%"UVxf" NV=%"NVgf" inttype=%"UVXf"\n", SvPVX_const(sv), SvIVX(sv), SvNVX(sv), (UV)numtype)); |
28e5dec8 JH |
1837 | if (SvNVX(sv) < (NV)IV_MIN) { |
1838 | (void)SvIOKp_on(sv); | |
1839 | (void)SvNOK_on(sv); | |
45977657 | 1840 | SvIV_set(sv, IV_MIN); |
28e5dec8 JH |
1841 | return IS_NUMBER_UNDERFLOW_IV; |
1842 | } | |
1843 | if (SvNVX(sv) > (NV)UV_MAX) { | |
1844 | (void)SvIOKp_on(sv); | |
1845 | (void)SvNOK_on(sv); | |
1846 | SvIsUV_on(sv); | |
607fa7f2 | 1847 | SvUV_set(sv, UV_MAX); |
28e5dec8 JH |
1848 | return IS_NUMBER_OVERFLOW_UV; |
1849 | } | |
c2988b20 NC |
1850 | (void)SvIOKp_on(sv); |
1851 | (void)SvNOK_on(sv); | |
1852 | /* Can't use strtol etc to convert this string. (See truth table in | |
1853 | sv_2iv */ | |
1854 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
45977657 | 1855 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
1856 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
1857 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
1858 | } else { | |
1859 | /* Integer is imprecise. NOK, IOKp */ | |
1860 | } | |
1861 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
1862 | } | |
1863 | SvIsUV_on(sv); | |
607fa7f2 | 1864 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
1865 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { |
1866 | if (SvUVX(sv) == UV_MAX) { | |
1867 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
1868 | possibly be preserved by NV. Hence, it must be overflow. | |
1869 | NOK, IOKp */ | |
1870 | return IS_NUMBER_OVERFLOW_UV; | |
1871 | } | |
1872 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
1873 | } else { | |
1874 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 1875 | } |
c2988b20 | 1876 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 1877 | } |
645c22ef DM |
1878 | #endif /* !NV_PRESERVES_UV*/ |
1879 | ||
af359546 NC |
1880 | STATIC bool |
1881 | S_sv_2iuv_common(pTHX_ SV *sv) { | |
97aff369 | 1882 | dVAR; |
af359546 | 1883 | if (SvNOKp(sv)) { |
28e5dec8 JH |
1884 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
1885 | * without also getting a cached IV/UV from it at the same time | |
1886 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
af359546 NC |
1887 | * IV or UV at same time to avoid this. */ |
1888 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
25da4f38 IZ |
1889 | |
1890 | if (SvTYPE(sv) == SVt_NV) | |
1891 | sv_upgrade(sv, SVt_PVNV); | |
1892 | ||
28e5dec8 JH |
1893 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
1894 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
1895 | certainly cast into the IV range at IV_MAX, whereas the correct | |
1896 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
1897 | cases go to UV */ | |
cab190d4 JD |
1898 | #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan) |
1899 | if (Perl_isnan(SvNVX(sv))) { | |
1900 | SvUV_set(sv, 0); | |
1901 | SvIsUV_on(sv); | |
fdbe6d7c | 1902 | return FALSE; |
cab190d4 | 1903 | } |
cab190d4 | 1904 | #endif |
28e5dec8 | 1905 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { |
45977657 | 1906 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
1907 | if (SvNVX(sv) == (NV) SvIVX(sv) |
1908 | #ifndef NV_PRESERVES_UV | |
1909 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
1910 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
1911 | /* Don't flag it as "accurately an integer" if the number | |
1912 | came from a (by definition imprecise) NV operation, and | |
1913 | we're outside the range of NV integer precision */ | |
1914 | #endif | |
1915 | ) { | |
1916 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
1917 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 1918 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
1919 | PTR2UV(sv), |
1920 | SvNVX(sv), | |
1921 | SvIVX(sv))); | |
1922 | ||
1923 | } else { | |
1924 | /* IV not precise. No need to convert from PV, as NV | |
1925 | conversion would already have cached IV if it detected | |
1926 | that PV->IV would be better than PV->NV->IV | |
1927 | flags already correct - don't set public IOK. */ | |
1928 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 1929 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
1930 | PTR2UV(sv), |
1931 | SvNVX(sv), | |
1932 | SvIVX(sv))); | |
1933 | } | |
1934 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
1935 | but the cast (NV)IV_MIN rounds to a the value less (more | |
1936 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
1937 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
1938 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
1939 | (NV)UVX == NVX are both true, but the values differ. :-( | |
1940 | Hopefully for 2s complement IV_MIN is something like | |
1941 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 1942 | } |
25da4f38 | 1943 | else { |
607fa7f2 | 1944 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
1945 | if ( |
1946 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
1947 | #ifndef NV_PRESERVES_UV | |
1948 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
1949 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
1950 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
1951 | /* Don't flag it as "accurately an integer" if the number | |
1952 | came from a (by definition imprecise) NV operation, and | |
1953 | we're outside the range of NV integer precision */ | |
1954 | #endif | |
1955 | ) | |
1956 | SvIOK_on(sv); | |
25da4f38 | 1957 | SvIsUV_on(sv); |
1c846c1f | 1958 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 1959 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 1960 | PTR2UV(sv), |
57def98f JH |
1961 | SvUVX(sv), |
1962 | SvUVX(sv))); | |
25da4f38 | 1963 | } |
748a9306 LW |
1964 | } |
1965 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 1966 | UV value; |
504618e9 | 1967 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
af359546 | 1968 | /* We want to avoid a possible problem when we cache an IV/ a UV which |
25da4f38 | 1969 | may be later translated to an NV, and the resulting NV is not |
c2988b20 NC |
1970 | the same as the direct translation of the initial string |
1971 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
1972 | be careful to ensure that the value with the .456 is around if the | |
1973 | NV value is requested in the future). | |
1c846c1f | 1974 | |
af359546 | 1975 | This means that if we cache such an IV/a UV, we need to cache the |
25da4f38 | 1976 | NV as well. Moreover, we trade speed for space, and do not |
28e5dec8 | 1977 | cache the NV if we are sure it's not needed. |
25da4f38 | 1978 | */ |
16b7a9a4 | 1979 | |
c2988b20 NC |
1980 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
1981 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
1982 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 1983 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
1984 | if (SvTYPE(sv) < SVt_PVIV) |
1985 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 1986 | (void)SvIOK_on(sv); |
c2988b20 NC |
1987 | } else if (SvTYPE(sv) < SVt_PVNV) |
1988 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 1989 | |
f2524eef | 1990 | /* If NVs preserve UVs then we only use the UV value if we know that |
c2988b20 NC |
1991 | we aren't going to call atof() below. If NVs don't preserve UVs |
1992 | then the value returned may have more precision than atof() will | |
1993 | return, even though value isn't perfectly accurate. */ | |
1994 | if ((numtype & (IS_NUMBER_IN_UV | |
1995 | #ifdef NV_PRESERVES_UV | |
1996 | | IS_NUMBER_NOT_INT | |
1997 | #endif | |
1998 | )) == IS_NUMBER_IN_UV) { | |
1999 | /* This won't turn off the public IOK flag if it was set above */ | |
2000 | (void)SvIOKp_on(sv); | |
2001 | ||
2002 | if (!(numtype & IS_NUMBER_NEG)) { | |
2003 | /* positive */; | |
2004 | if (value <= (UV)IV_MAX) { | |
45977657 | 2005 | SvIV_set(sv, (IV)value); |
c2988b20 | 2006 | } else { |
af359546 | 2007 | /* it didn't overflow, and it was positive. */ |
607fa7f2 | 2008 | SvUV_set(sv, value); |
c2988b20 NC |
2009 | SvIsUV_on(sv); |
2010 | } | |
2011 | } else { | |
2012 | /* 2s complement assumption */ | |
2013 | if (value <= (UV)IV_MIN) { | |
45977657 | 2014 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2015 | } else { |
2016 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2017 | I'm assuming it will be rare. */ |
c2988b20 NC |
2018 | if (SvTYPE(sv) < SVt_PVNV) |
2019 | sv_upgrade(sv, SVt_PVNV); | |
2020 | SvNOK_on(sv); | |
2021 | SvIOK_off(sv); | |
2022 | SvIOKp_on(sv); | |
9d6ce603 | 2023 | SvNV_set(sv, -(NV)value); |
45977657 | 2024 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2025 | } |
2026 | } | |
2027 | } | |
2028 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2029 | will be in the previous block to set the IV slot, and the next | |
2030 | block to set the NV slot. So no else here. */ | |
2031 | ||
2032 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2033 | != IS_NUMBER_IN_UV) { | |
2034 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
3f7c398e | 2035 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 | 2036 | |
c2988b20 NC |
2037 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2038 | not_a_number(sv); | |
28e5dec8 | 2039 | |
65202027 | 2040 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2041 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2042 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2043 | #else |
1779d84d | 2044 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2045 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2046 | #endif |
28e5dec8 | 2047 | |
28e5dec8 | 2048 | #ifdef NV_PRESERVES_UV |
af359546 NC |
2049 | (void)SvIOKp_on(sv); |
2050 | (void)SvNOK_on(sv); | |
2051 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2052 | SvIV_set(sv, I_V(SvNVX(sv))); | |
2053 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2054 | SvIOK_on(sv); | |
2055 | } else { | |
6f207bd3 | 2056 | NOOP; /* Integer is imprecise. NOK, IOKp */ |
af359546 NC |
2057 | } |
2058 | /* UV will not work better than IV */ | |
2059 | } else { | |
2060 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2061 | SvIsUV_on(sv); | |
2062 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
2063 | SvUV_set(sv, UV_MAX); | |
af359546 NC |
2064 | } else { |
2065 | SvUV_set(sv, U_V(SvNVX(sv))); | |
2066 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs | |
2067 | NV preservse UV so can do correct comparison. */ | |
2068 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2069 | SvIOK_on(sv); | |
af359546 | 2070 | } else { |
6f207bd3 | 2071 | NOOP; /* Integer is imprecise. NOK, IOKp, is UV */ |
af359546 NC |
2072 | } |
2073 | } | |
4b0c9573 | 2074 | SvIsUV_on(sv); |
af359546 | 2075 | } |
28e5dec8 | 2076 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2077 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2078 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
af359546 | 2079 | /* The IV/UV slot will have been set from value returned by |
c2988b20 NC |
2080 | grok_number above. The NV slot has just been set using |
2081 | Atof. */ | |
560b0c46 | 2082 | SvNOK_on(sv); |
c2988b20 NC |
2083 | assert (SvIOKp(sv)); |
2084 | } else { | |
2085 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2086 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2087 | /* Small enough to preserve all bits. */ | |
2088 | (void)SvIOKp_on(sv); | |
2089 | SvNOK_on(sv); | |
45977657 | 2090 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2091 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
2092 | SvIOK_on(sv); | |
2093 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2094 | this NV is in the preserved range, therefore: */ | |
2095 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2096 | < (UV)IV_MAX)) { | |
32fdb065 | 2097 | 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 |
2098 | } |
2099 | } else { | |
2100 | /* IN_UV NOT_INT | |
2101 | 0 0 already failed to read UV. | |
2102 | 0 1 already failed to read UV. | |
2103 | 1 0 you won't get here in this case. IV/UV | |
2104 | slot set, public IOK, Atof() unneeded. | |
2105 | 1 1 already read UV. | |
2106 | so there's no point in sv_2iuv_non_preserve() attempting | |
2107 | to use atol, strtol, strtoul etc. */ | |
40a17c4c | 2108 | sv_2iuv_non_preserve (sv, numtype); |
c2988b20 NC |
2109 | } |
2110 | } | |
28e5dec8 | 2111 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2112 | } |
af359546 NC |
2113 | } |
2114 | else { | |
675c862f | 2115 | if (isGV_with_GP(sv)) |
a0933d07 | 2116 | return glob_2number((GV *)sv); |
180488f8 | 2117 | |
af359546 NC |
2118 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
2119 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) | |
2120 | report_uninit(sv); | |
2121 | } | |
25da4f38 IZ |
2122 | if (SvTYPE(sv) < SVt_IV) |
2123 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2124 | sv_upgrade(sv, SVt_IV); | |
af359546 NC |
2125 | /* Return 0 from the caller. */ |
2126 | return TRUE; | |
2127 | } | |
2128 | return FALSE; | |
2129 | } | |
2130 | ||
2131 | /* | |
2132 | =for apidoc sv_2iv_flags | |
2133 | ||
2134 | Return the integer value of an SV, doing any necessary string | |
2135 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. | |
2136 | Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
2137 | ||
2138 | =cut | |
2139 | */ | |
2140 | ||
2141 | IV | |
2142 | Perl_sv_2iv_flags(pTHX_ register SV *sv, I32 flags) | |
2143 | { | |
97aff369 | 2144 | dVAR; |
af359546 | 2145 | if (!sv) |
a0d0e21e | 2146 | return 0; |
cecf5685 NC |
2147 | if (SvGMAGICAL(sv) || (SvTYPE(sv) == SVt_PVGV && SvVALID(sv))) { |
2148 | /* FBMs use the same flag bit as SVf_IVisUV, so must let them | |
50caf62e NC |
2149 | cache IVs just in case. In practice it seems that they never |
2150 | actually anywhere accessible by user Perl code, let alone get used | |
2151 | in anything other than a string context. */ | |
af359546 NC |
2152 | if (flags & SV_GMAGIC) |
2153 | mg_get(sv); | |
2154 | if (SvIOKp(sv)) | |
2155 | return SvIVX(sv); | |
2156 | if (SvNOKp(sv)) { | |
2157 | return I_V(SvNVX(sv)); | |
2158 | } | |
71c558c3 NC |
2159 | if (SvPOKp(sv) && SvLEN(sv)) { |
2160 | UV value; | |
2161 | const int numtype | |
2162 | = grok_number(SvPVX_const(sv), SvCUR(sv), &value); | |
2163 | ||
2164 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2165 | == IS_NUMBER_IN_UV) { | |
2166 | /* It's definitely an integer */ | |
2167 | if (numtype & IS_NUMBER_NEG) { | |
2168 | if (value < (UV)IV_MIN) | |
2169 | return -(IV)value; | |
2170 | } else { | |
2171 | if (value < (UV)IV_MAX) | |
2172 | return (IV)value; | |
2173 | } | |
2174 | } | |
2175 | if (!numtype) { | |
2176 | if (ckWARN(WARN_NUMERIC)) | |
2177 | not_a_number(sv); | |
2178 | } | |
2179 | return I_V(Atof(SvPVX_const(sv))); | |
2180 | } | |
1c7ff15e NC |
2181 | if (SvROK(sv)) { |
2182 | goto return_rok; | |
af359546 | 2183 | } |
1c7ff15e NC |
2184 | assert(SvTYPE(sv) >= SVt_PVMG); |
2185 | /* This falls through to the report_uninit inside S_sv_2iuv_common. */ | |
4cb1ec55 | 2186 | } else if (SvTHINKFIRST(sv)) { |
af359546 | 2187 | if (SvROK(sv)) { |
1c7ff15e | 2188 | return_rok: |
af359546 NC |
2189 | if (SvAMAGIC(sv)) { |
2190 | SV * const tmpstr=AMG_CALLun(sv,numer); | |
2191 | if (tmpstr && (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { | |
2192 | return SvIV(tmpstr); | |
2193 | } | |
2194 | } | |
2195 | return PTR2IV(SvRV(sv)); | |
2196 | } | |
2197 | if (SvIsCOW(sv)) { | |
2198 | sv_force_normal_flags(sv, 0); | |
2199 | } | |
2200 | if (SvREADONLY(sv) && !SvOK(sv)) { | |
2201 | if (ckWARN(WARN_UNINITIALIZED)) | |
2202 | report_uninit(sv); | |
2203 | return 0; | |
2204 | } | |
2205 | } | |
2206 | if (!SvIOKp(sv)) { | |
2207 | if (S_sv_2iuv_common(aTHX_ sv)) | |
2208 | return 0; | |
79072805 | 2209 | } |
1d7c1841 GS |
2210 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2211 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2212 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2213 | } |
2214 | ||
645c22ef | 2215 | /* |
891f9566 | 2216 | =for apidoc sv_2uv_flags |
645c22ef DM |
2217 | |
2218 | Return the unsigned integer value of an SV, doing any necessary string | |
891f9566 YST |
2219 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. |
2220 | Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros. | |
645c22ef DM |
2221 | |
2222 | =cut | |
2223 | */ | |
2224 | ||
ff68c719 | 2225 | UV |
891f9566 | 2226 | Perl_sv_2uv_flags(pTHX_ register SV *sv, I32 flags) |
ff68c719 | 2227 | { |
97aff369 | 2228 | dVAR; |
ff68c719 | 2229 | if (!sv) |
2230 | return 0; | |
cecf5685 NC |
2231 | if (SvGMAGICAL(sv) || (SvTYPE(sv) == SVt_PVGV && SvVALID(sv))) { |
2232 | /* FBMs use the same flag bit as SVf_IVisUV, so must let them | |
50caf62e | 2233 | cache IVs just in case. */ |
891f9566 YST |
2234 | if (flags & SV_GMAGIC) |
2235 | mg_get(sv); | |
ff68c719 | 2236 | if (SvIOKp(sv)) |
2237 | return SvUVX(sv); | |
2238 | if (SvNOKp(sv)) | |
2239 | return U_V(SvNVX(sv)); | |
71c558c3 NC |
2240 | if (SvPOKp(sv) && SvLEN(sv)) { |
2241 | UV value; | |
2242 | const int numtype | |
2243 | = grok_number(SvPVX_const(sv), SvCUR(sv), &value); | |
2244 | ||
2245 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2246 | == IS_NUMBER_IN_UV) { | |
2247 | /* It's definitely an integer */ | |
2248 | if (!(numtype & IS_NUMBER_NEG)) | |
2249 | return value; | |
2250 | } | |
2251 | if (!numtype) { | |
2252 | if (ckWARN(WARN_NUMERIC)) | |
2253 | not_a_number(sv); | |
2254 | } | |
2255 | return U_V(Atof(SvPVX_const(sv))); | |
2256 | } | |
1c7ff15e NC |
2257 | if (SvROK(sv)) { |
2258 | goto return_rok; | |
3fe9a6f1 | 2259 | } |
1c7ff15e NC |
2260 | assert(SvTYPE(sv) >= SVt_PVMG); |
2261 | /* This falls through to the report_uninit inside S_sv_2iuv_common. */ | |
4cb1ec55 | 2262 | } else if (SvTHINKFIRST(sv)) { |
ff68c719 | 2263 | if (SvROK(sv)) { |
1c7ff15e | 2264 | return_rok: |
deb46114 NC |
2265 | if (SvAMAGIC(sv)) { |
2266 | SV *const tmpstr = AMG_CALLun(sv,numer); | |
2267 | if (tmpstr && (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { | |
2268 | return SvUV(tmpstr); | |
2269 | } | |
2270 | } | |
2271 | return PTR2UV(SvRV(sv)); | |
ff68c719 | 2272 | } |
765f542d NC |
2273 | if (SvIsCOW(sv)) { |
2274 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2275 | } |
0336b60e | 2276 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2277 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2278 | report_uninit(sv); |
ff68c719 | 2279 | return 0; |
2280 | } | |
2281 | } | |
af359546 NC |
2282 | if (!SvIOKp(sv)) { |
2283 | if (S_sv_2iuv_common(aTHX_ sv)) | |
2284 | return 0; | |
ff68c719 | 2285 | } |
25da4f38 | 2286 | |
1d7c1841 GS |
2287 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
2288 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 2289 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 2290 | } |
2291 | ||
645c22ef DM |
2292 | /* |
2293 | =for apidoc sv_2nv | |
2294 | ||
2295 | Return the num value of an SV, doing any necessary string or integer | |
2296 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
2297 | macros. | |
2298 | ||
2299 | =cut | |
2300 | */ | |
2301 | ||
65202027 | 2302 | NV |
864dbfa3 | 2303 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 | 2304 | { |
97aff369 | 2305 | dVAR; |
79072805 LW |
2306 | if (!sv) |
2307 | return 0.0; | |
cecf5685 NC |
2308 | if (SvGMAGICAL(sv) || (SvTYPE(sv) == SVt_PVGV && SvVALID(sv))) { |
2309 | /* FBMs use the same flag bit as SVf_IVisUV, so must let them | |
50caf62e | 2310 | cache IVs just in case. */ |
463ee0b2 LW |
2311 | mg_get(sv); |
2312 | if (SvNOKp(sv)) | |
2313 | return SvNVX(sv); | |
0aa395f8 | 2314 | if ((SvPOKp(sv) && SvLEN(sv)) && !SvIOKp(sv)) { |
041457d9 | 2315 | if (!SvIOKp(sv) && ckWARN(WARN_NUMERIC) && |
504618e9 | 2316 | !grok_number(SvPVX_const(sv), SvCUR(sv), NULL)) |
a0d0e21e | 2317 | not_a_number(sv); |
3f7c398e | 2318 | return Atof(SvPVX_const(sv)); |
a0d0e21e | 2319 | } |
25da4f38 | 2320 | if (SvIOKp(sv)) { |
1c846c1f | 2321 | if (SvIsUV(sv)) |
65202027 | 2322 | return (NV)SvUVX(sv); |
25da4f38 | 2323 | else |
65202027 | 2324 | return (NV)SvIVX(sv); |
47a72cb8 NC |
2325 | } |
2326 | if (SvROK(sv)) { | |
2327 | goto return_rok; | |
2328 | } | |
2329 | assert(SvTYPE(sv) >= SVt_PVMG); | |
2330 | /* This falls through to the report_uninit near the end of the | |
2331 | function. */ | |
2332 | } else if (SvTHINKFIRST(sv)) { | |
a0d0e21e | 2333 | if (SvROK(sv)) { |
47a72cb8 | 2334 | return_rok: |
deb46114 NC |
2335 | if (SvAMAGIC(sv)) { |
2336 | SV *const tmpstr = AMG_CALLun(sv,numer); | |
2337 | if (tmpstr && (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { | |
2338 | return SvNV(tmpstr); | |
2339 | } | |
2340 | } | |
2341 | return PTR2NV(SvRV(sv)); | |
a0d0e21e | 2342 | } |
765f542d NC |
2343 | if (SvIsCOW(sv)) { |
2344 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2345 | } |
0336b60e | 2346 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 2347 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2348 | report_uninit(sv); |
ed6116ce LW |
2349 | return 0.0; |
2350 | } | |
79072805 LW |
2351 | } |
2352 | if (SvTYPE(sv) < SVt_NV) { | |
7e25a7e9 NC |
2353 | /* The logic to use SVt_PVNV if necessary is in sv_upgrade. */ |
2354 | sv_upgrade(sv, SVt_NV); | |
906f284f | 2355 | #ifdef USE_LONG_DOUBLE |
097ee67d | 2356 | DEBUG_c({ |
f93f4e46 | 2357 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2358 | PerlIO_printf(Perl_debug_log, |
2359 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
2360 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2361 | RESTORE_NUMERIC_LOCAL(); |
2362 | }); | |
65202027 | 2363 | #else |
572bbb43 | 2364 | DEBUG_c({ |
f93f4e46 | 2365 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2366 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 2367 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2368 | RESTORE_NUMERIC_LOCAL(); |
2369 | }); | |
572bbb43 | 2370 | #endif |
79072805 LW |
2371 | } |
2372 | else if (SvTYPE(sv) < SVt_PVNV) | |
2373 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
2374 | if (SvNOKp(sv)) { |
2375 | return SvNVX(sv); | |
61604483 | 2376 | } |
59d8ce62 | 2377 | if (SvIOKp(sv)) { |
9d6ce603 | 2378 | SvNV_set(sv, SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv)); |
28e5dec8 JH |
2379 | #ifdef NV_PRESERVES_UV |
2380 | SvNOK_on(sv); | |
2381 | #else | |
2382 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
2383 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
2384 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
2385 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
2386 | SvNOK_on(sv); | |
2387 | else | |
2388 | SvNOKp_on(sv); | |
2389 | #endif | |
93a17b20 | 2390 | } |
748a9306 | 2391 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 2392 | UV value; |
3f7c398e | 2393 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
041457d9 | 2394 | if (!SvIOKp(sv) && !numtype && ckWARN(WARN_NUMERIC)) |
a0d0e21e | 2395 | not_a_number(sv); |
28e5dec8 | 2396 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
2397 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2398 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2399 | /* It's definitely an integer */ |
9d6ce603 | 2400 | SvNV_set(sv, (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value); |
c2988b20 | 2401 | } else |
3f7c398e | 2402 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2403 | SvNOK_on(sv); |
2404 | #else | |
3f7c398e | 2405 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2406 | /* Only set the public NV OK flag if this NV preserves the value in |
2407 | the PV at least as well as an IV/UV would. | |
2408 | Not sure how to do this 100% reliably. */ | |
2409 | /* if that shift count is out of range then Configure's test is | |
2410 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
2411 | UV_BITS */ | |
2412 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 2413 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 2414 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
2415 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
2416 | /* Can't use strtol etc to convert this string, so don't try. | |
2417 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
2418 | SvNOK_on(sv); | |
2419 | } else { | |
2420 | /* value has been set. It may not be precise. */ | |
2421 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
2422 | /* 2s complement assumption for (UV)IV_MIN */ | |
2423 | SvNOK_on(sv); /* Integer is too negative. */ | |
2424 | } else { | |
2425 | SvNOKp_on(sv); | |
2426 | SvIOKp_on(sv); | |
6fa402ec | 2427 | |
c2988b20 | 2428 | if (numtype & IS_NUMBER_NEG) { |
45977657 | 2429 | SvIV_set(sv, -(IV)value); |
c2988b20 | 2430 | } else if (value <= (UV)IV_MAX) { |
45977657 | 2431 | SvIV_set(sv, (IV)value); |
c2988b20 | 2432 | } else { |
607fa7f2 | 2433 | SvUV_set(sv, value); |
c2988b20 NC |
2434 | SvIsUV_on(sv); |
2435 | } | |
2436 | ||
2437 | if (numtype & IS_NUMBER_NOT_INT) { | |
2438 | /* I believe that even if the original PV had decimals, | |
2439 | they are lost beyond the limit of the FP precision. | |
2440 | However, neither is canonical, so both only get p | |
2441 | flags. NWC, 2000/11/25 */ | |
2442 | /* Both already have p flags, so do nothing */ | |
2443 | } else { | |
66a1b24b | 2444 | const NV nv = SvNVX(sv); |
c2988b20 NC |
2445 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { |
2446 | if (SvIVX(sv) == I_V(nv)) { | |
2447 | SvNOK_on(sv); | |
c2988b20 | 2448 | } else { |
c2988b20 NC |
2449 | /* It had no "." so it must be integer. */ |
2450 | } | |
00b6aa41 | 2451 | SvIOK_on(sv); |
c2988b20 NC |
2452 | } else { |
2453 | /* between IV_MAX and NV(UV_MAX). | |
2454 | Could be slightly > UV_MAX */ | |
6fa402ec | 2455 | |
c2988b20 NC |
2456 | if (numtype & IS_NUMBER_NOT_INT) { |
2457 | /* UV and NV both imprecise. */ | |
2458 | } else { | |
66a1b24b | 2459 | const UV nv_as_uv = U_V(nv); |
c2988b20 NC |
2460 | |
2461 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
2462 | SvNOK_on(sv); | |
c2988b20 | 2463 | } |
00b6aa41 | 2464 | SvIOK_on(sv); |
c2988b20 NC |
2465 | } |
2466 | } | |
2467 | } | |
2468 | } | |
2469 | } | |
28e5dec8 | 2470 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 2471 | } |
79072805 | 2472 | else { |
f7877b28 | 2473 | if (isGV_with_GP(sv)) { |
19f6321d | 2474 | glob_2number((GV *)sv); |
180488f8 NC |
2475 | return 0.0; |
2476 | } | |
2477 | ||
041457d9 | 2478 | if (!PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP) && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2479 | report_uninit(sv); |
7e25a7e9 NC |
2480 | assert (SvTYPE(sv) >= SVt_NV); |
2481 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2482 | /* XXX Ilya implies that this is a bug in callers that assume this | |
2483 | and ideally should be fixed. */ | |
a0d0e21e | 2484 | return 0.0; |
79072805 | 2485 | } |
572bbb43 | 2486 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 2487 | DEBUG_c({ |
f93f4e46 | 2488 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2489 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
2490 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2491 | RESTORE_NUMERIC_LOCAL(); |
2492 | }); | |
65202027 | 2493 | #else |
572bbb43 | 2494 | DEBUG_c({ |
f93f4e46 | 2495 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2496 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 2497 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2498 | RESTORE_NUMERIC_LOCAL(); |
2499 | }); | |
572bbb43 | 2500 | #endif |
463ee0b2 | 2501 | return SvNVX(sv); |
79072805 LW |
2502 | } |
2503 | ||
645c22ef DM |
2504 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
2505 | * UV as a string towards the end of buf, and return pointers to start and | |
2506 | * end of it. | |
2507 | * | |
2508 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
2509 | */ | |
2510 | ||
864dbfa3 | 2511 | static char * |
aec46f14 | 2512 | S_uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
25da4f38 | 2513 | { |
25da4f38 | 2514 | char *ptr = buf + TYPE_CHARS(UV); |
823a54a3 | 2515 | char * const ebuf = ptr; |
25da4f38 | 2516 | int sign; |
25da4f38 IZ |
2517 | |
2518 | if (is_uv) | |
2519 | sign = 0; | |
2520 | else if (iv >= 0) { | |
2521 | uv = iv; | |
2522 | sign = 0; | |
2523 | } else { | |
2524 | uv = -iv; | |
2525 | sign = 1; | |
2526 | } | |
2527 | do { | |
eb160463 | 2528 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
2529 | } while (uv /= 10); |
2530 | if (sign) | |
2531 | *--ptr = '-'; | |
2532 | *peob = ebuf; | |
2533 | return ptr; | |
2534 | } | |
2535 | ||
645c22ef DM |
2536 | /* |
2537 | =for apidoc sv_2pv_flags | |
2538 | ||
ff276b08 | 2539 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
2540 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
2541 | if necessary. | |
2542 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
2543 | usually end up here too. | |
2544 | ||
2545 | =cut | |
2546 | */ | |
2547 | ||
8d6d96c1 HS |
2548 | char * |
2549 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
2550 | { | |
97aff369 | 2551 | dVAR; |
79072805 | 2552 | register char *s; |
79072805 | 2553 | |
463ee0b2 | 2554 | if (!sv) { |
cdb061a3 NC |
2555 | if (lp) |
2556 | *lp = 0; | |
73d840c0 | 2557 | return (char *)""; |
463ee0b2 | 2558 | } |
8990e307 | 2559 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
2560 | if (flags & SV_GMAGIC) |
2561 | mg_get(sv); | |
463ee0b2 | 2562 | if (SvPOKp(sv)) { |
cdb061a3 NC |
2563 | if (lp) |
2564 | *lp = SvCUR(sv); | |
10516c54 NC |
2565 | if (flags & SV_MUTABLE_RETURN) |
2566 | return SvPVX_mutable(sv); | |
4d84ee25 NC |
2567 | if (flags & SV_CONST_RETURN) |
2568 | return (char *)SvPVX_const(sv); | |
463ee0b2 LW |
2569 | return SvPVX(sv); |
2570 | } | |
75dfc8ec NC |
2571 | if (SvIOKp(sv) || SvNOKp(sv)) { |
2572 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ | |
75dfc8ec NC |
2573 | STRLEN len; |
2574 | ||
2575 | if (SvIOKp(sv)) { | |
e80fed9d | 2576 | len = SvIsUV(sv) |
d9fad198 JH |
2577 | ? my_snprintf(tbuf, sizeof(tbuf), "%"UVuf, (UV)SvUVX(sv)) |
2578 | : my_snprintf(tbuf, sizeof(tbuf), "%"IVdf, (IV)SvIVX(sv)); | |
75dfc8ec | 2579 | } else { |
e8ada2d0 NC |
2580 | Gconvert(SvNVX(sv), NV_DIG, 0, tbuf); |
2581 | len = strlen(tbuf); | |
75dfc8ec | 2582 | } |
b5b886f0 NC |
2583 | assert(!SvROK(sv)); |
2584 | { | |
75dfc8ec NC |
2585 | dVAR; |
2586 | ||
2587 | #ifdef FIXNEGATIVEZERO | |
e8ada2d0 NC |
2588 | if (len == 2 && tbuf[0] == '-' && tbuf[1] == '0') { |
2589 | tbuf[0] = '0'; | |
2590 | tbuf[1] = 0; | |
75dfc8ec NC |
2591 | len = 1; |
2592 | } | |
2593 | #endif | |
2594 | SvUPGRADE(sv, SVt_PV); | |
2595 | if (lp) | |
2596 | *lp = len; | |
2597 | s = SvGROW_mutable(sv, len + 1); | |
2598 | SvCUR_set(sv, len); | |
2599 | SvPOKp_on(sv); | |
10edeb5d | 2600 | return (char*)memcpy(s, tbuf, len + 1); |
75dfc8ec | 2601 | } |
463ee0b2 | 2602 | } |
1c7ff15e NC |
2603 | if (SvROK(sv)) { |
2604 | goto return_rok; | |
2605 | } | |
2606 | assert(SvTYPE(sv) >= SVt_PVMG); | |
2607 | /* This falls through to the report_uninit near the end of the | |
2608 | function. */ | |
2609 | } else if (SvTHINKFIRST(sv)) { | |
ed6116ce | 2610 | if (SvROK(sv)) { |
1c7ff15e | 2611 | return_rok: |
deb46114 NC |
2612 | if (SvAMAGIC(sv)) { |
2613 | SV *const tmpstr = AMG_CALLun(sv,string); | |
2614 | if (tmpstr && (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { | |
2615 | /* Unwrap this: */ | |
2616 | /* char *pv = lp ? SvPV(tmpstr, *lp) : SvPV_nolen(tmpstr); | |
2617 | */ | |
2618 | ||
2619 | char *pv; | |
2620 | if ((SvFLAGS(tmpstr) & (SVf_POK)) == SVf_POK) { | |
2621 | if (flags & SV_CONST_RETURN) { | |
2622 | pv = (char *) SvPVX_const(tmpstr); | |
2623 | } else { | |
2624 | pv = (flags & SV_MUTABLE_RETURN) | |
2625 | ? SvPVX_mutable(tmpstr) : SvPVX(tmpstr); | |
2626 | } | |
2627 | if (lp) | |
2628 | *lp = SvCUR(tmpstr); | |
50adf7d2 | 2629 | } else { |
deb46114 | 2630 | pv = sv_2pv_flags(tmpstr, lp, flags); |
50adf7d2 | 2631 | } |
deb46114 NC |
2632 | if (SvUTF8(tmpstr)) |
2633 | SvUTF8_on(sv); | |
2634 | else | |
2635 | SvUTF8_off(sv); | |
2636 | return pv; | |
50adf7d2 | 2637 | } |
deb46114 NC |
2638 | } |
2639 | { | |
fafee734 NC |
2640 | STRLEN len; |
2641 | char *retval; | |
2642 | char *buffer; | |
f9277f47 | 2643 | MAGIC *mg; |
d8eae41e NC |
2644 | const SV *const referent = (SV*)SvRV(sv); |
2645 | ||
2646 | if (!referent) { | |
fafee734 NC |
2647 | len = 7; |
2648 | retval = buffer = savepvn("NULLREF", len); | |
042dae7a NC |
2649 | } else if (SvTYPE(referent) == SVt_PVMG |
2650 | && ((SvFLAGS(referent) & | |
2651 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) | |
2652 | == (SVs_OBJECT|SVs_SMG)) | |
de8c5301 YO |
2653 | && (mg = mg_find(referent, PERL_MAGIC_qr))) |
2654 | { | |
2655 | char *str = NULL; | |
2656 | I32 haseval = 0; | |
60df1e07 | 2657 | U32 flags = 0; |
de8c5301 YO |
2658 | (str) = CALLREG_AS_STR(mg,lp,&flags,&haseval); |
2659 | if (flags & 1) | |
2660 | SvUTF8_on(sv); | |
2661 | else | |
2662 | SvUTF8_off(sv); | |
2663 | PL_reginterp_cnt += haseval; | |
2664 | return str; | |
d8eae41e NC |
2665 | } else { |
2666 | const char *const typestr = sv_reftype(referent, 0); | |
fafee734 NC |
2667 | const STRLEN typelen = strlen(typestr); |
2668 | UV addr = PTR2UV(referent); | |
2669 | const char *stashname = NULL; | |
2670 | STRLEN stashnamelen = 0; /* hush, gcc */ | |
2671 | const char *buffer_end; | |
d8eae41e | 2672 | |
d8eae41e | 2673 | if (SvOBJECT(referent)) { |
fafee734 NC |
2674 | const HEK *const name = HvNAME_HEK(SvSTASH(referent)); |
2675 | ||
2676 | if (name) { | |
2677 | stashname = HEK_KEY(name); | |
2678 | stashnamelen = HEK_LEN(name); | |
2679 | ||
2680 | if (HEK_UTF8(name)) { | |
2681 | SvUTF8_on(sv); | |
2682 | } else { | |
2683 | SvUTF8_off(sv); | |
2684 | } | |
2685 | } else { | |
2686 | stashname = "__ANON__"; | |
2687 | stashnamelen = 8; | |
2688 | } | |
2689 | len = stashnamelen + 1 /* = */ + typelen + 3 /* (0x */ | |
2690 | + 2 * sizeof(UV) + 2 /* )\0 */; | |
2691 | } else { | |
2692 | len = typelen + 3 /* (0x */ | |
2693 | + 2 * sizeof(UV) + 2 /* )\0 */; | |
d8eae41e | 2694 | } |
fafee734 NC |
2695 | |
2696 | Newx(buffer, len, char); | |
2697 | buffer_end = retval = buffer + len; | |
2698 | ||
2699 | /* Working backwards */ | |
2700 | *--retval = '\0'; | |
2701 | *--retval = ')'; | |
2702 | do { | |
2703 | *--retval = PL_hexdigit[addr & 15]; | |
2704 | } while (addr >>= 4); | |
2705 | *--retval = 'x'; | |
2706 | *--retval = '0'; | |
2707 | *--retval = '('; | |
2708 | ||
2709 | retval -= typelen; | |
2710 | memcpy(retval, typestr, typelen); | |
2711 | ||
2712 | if (stashname) { | |
2713 | *--retval = '='; | |
2714 | retval -= stashnamelen; | |
2715 | memcpy(retval, stashname, stashnamelen); | |
2716 | } | |
2717 | /* retval may not neccesarily have reached the start of the | |
2718 | buffer here. */ | |
2719 | assert (retval >= buffer); | |
2720 | ||
2721 | len = buffer_end - retval - 1; /* -1 for that \0 */ | |
c080367d | 2722 | } |
042dae7a | 2723 | if (lp) |
fafee734 NC |
2724 | *lp = len; |
2725 | SAVEFREEPV(buffer); | |
2726 | return retval; | |
463ee0b2 | 2727 | } |
79072805 | 2728 | } |
0336b60e | 2729 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2730 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2731 | report_uninit(sv); |
cdb061a3 NC |
2732 | if (lp) |
2733 | *lp = 0; | |
73d840c0 | 2734 | return (char *)""; |
79072805 | 2735 | } |
79072805 | 2736 | } |
28e5dec8 JH |
2737 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
2738 | /* I'm assuming that if both IV and NV are equally valid then | |
2739 | converting the IV is going to be more efficient */ | |
e1ec3a88 | 2740 | const U32 isUIOK = SvIsUV(sv); |
28e5dec8 JH |
2741 | char buf[TYPE_CHARS(UV)]; |
2742 | char *ebuf, *ptr; | |
97a130b8 | 2743 | STRLEN len; |
28e5dec8 JH |
2744 | |
2745 | if (SvTYPE(sv) < SVt_PVIV) | |
2746 | sv_upgrade(sv, SVt_PVIV); | |
4ea1d550 | 2747 | ptr = uiv_2buf(buf, SvIVX(sv), SvUVX(sv), isUIOK, &ebuf); |
97a130b8 | 2748 | len = ebuf - ptr; |
5902b6a9 | 2749 | /* inlined from sv_setpvn */ |
97a130b8 NC |
2750 | s = SvGROW_mutable(sv, len + 1); |
2751 | Move(ptr, s, len, char); | |
2752 | s += len; | |
28e5dec8 | 2753 | *s = '\0'; |
28e5dec8 JH |
2754 | } |
2755 | else if (SvNOKp(sv)) { | |
c81271c3 | 2756 | const int olderrno = errno; |
79072805 LW |
2757 | if (SvTYPE(sv) < SVt_PVNV) |
2758 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 2759 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
5902b6a9 | 2760 | s = SvGROW_mutable(sv, NV_DIG + 20); |
c81271c3 | 2761 | /* some Xenix systems wipe out errno here */ |
79072805 | 2762 | #ifdef apollo |
463ee0b2 | 2763 | if (SvNVX(sv) == 0.0) |
d1307786 | 2764 | my_strlcpy(s, "0", SvLEN(sv)); |
79072805 LW |
2765 | else |
2766 | #endif /*apollo*/ | |
bbce6d69 | 2767 | { |
2d4389e4 | 2768 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 2769 | } |
79072805 | 2770 | errno = olderrno; |
a0d0e21e LW |
2771 | #ifdef FIXNEGATIVEZERO |
2772 | if (*s == '-' && s[1] == '0' && !s[2]) | |
d1307786 | 2773 | my_strlcpy(s, "0", SvLEN(s)); |
a0d0e21e | 2774 | #endif |
79072805 LW |
2775 | while (*s) s++; |
2776 | #ifdef hcx | |
2777 | if (s[-1] == '.') | |
46fc3d4c | 2778 | *--s = '\0'; |
79072805 LW |
2779 | #endif |
2780 | } | |
79072805 | 2781 | else { |
675c862f | 2782 | if (isGV_with_GP(sv)) |
19f6321d | 2783 | return glob_2pv((GV *)sv, lp); |
180488f8 | 2784 | |
041457d9 | 2785 | if (!PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP) && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2786 | report_uninit(sv); |
cdb061a3 | 2787 | if (lp) |
00b6aa41 | 2788 | *lp = 0; |
25da4f38 IZ |
2789 | if (SvTYPE(sv) < SVt_PV) |
2790 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2791 | sv_upgrade(sv, SVt_PV); | |
73d840c0 | 2792 | return (char *)""; |
79072805 | 2793 | } |
cdb061a3 | 2794 | { |
823a54a3 | 2795 | const STRLEN len = s - SvPVX_const(sv); |
cdb061a3 NC |
2796 | if (lp) |
2797 | *lp = len; | |
2798 | SvCUR_set(sv, len); | |
2799 | } | |
79072805 | 2800 | SvPOK_on(sv); |
1d7c1841 | 2801 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 2802 | PTR2UV(sv),SvPVX_const(sv))); |
4d84ee25 NC |
2803 | if (flags & SV_CONST_RETURN) |
2804 | return (char *)SvPVX_const(sv); | |
10516c54 NC |
2805 | if (flags & SV_MUTABLE_RETURN) |
2806 | return SvPVX_mutable(sv); | |
463ee0b2 LW |
2807 | return SvPVX(sv); |
2808 | } | |
2809 | ||
645c22ef | 2810 | /* |
6050d10e JP |
2811 | =for apidoc sv_copypv |
2812 | ||
2813 | Copies a stringified representation of the source SV into the | |
2814 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 2815 | coercion of numeric values into strings. Guaranteed to preserve |
2575c402 | 2816 | UTF8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
2817 | sv_2pv[_flags] but operates directly on an SV instead of just the |
2818 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
2819 | would lose the UTF-8'ness of the PV. |
2820 | ||
2821 | =cut | |
2822 | */ | |
2823 | ||
2824 | void | |
2825 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
2826 | { | |
446eaa42 | 2827 | STRLEN len; |
53c1dcc0 | 2828 | const char * const s = SvPV_const(ssv,len); |
cb50f42d | 2829 | sv_setpvn(dsv,s,len); |
446eaa42 | 2830 | if (SvUTF8(ssv)) |
cb50f42d | 2831 | SvUTF8_on(dsv); |
446eaa42 | 2832 | else |
cb50f42d | 2833 | SvUTF8_off(dsv); |
6050d10e JP |
2834 | } |
2835 | ||
2836 | /* | |
645c22ef DM |
2837 | =for apidoc sv_2pvbyte |
2838 | ||
2839 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 2840 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
2841 | side-effect. |
2842 | ||
2843 | Usually accessed via the C<SvPVbyte> macro. | |
2844 | ||
2845 | =cut | |
2846 | */ | |
2847 | ||
7340a771 GS |
2848 | char * |
2849 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
2850 | { | |
0875d2fe | 2851 | sv_utf8_downgrade(sv,0); |
97972285 | 2852 | return lp ? SvPV(sv,*lp) : SvPV_nolen(sv); |
7340a771 GS |
2853 | } |
2854 | ||
645c22ef | 2855 | /* |
035cbb0e RGS |
2856 | =for apidoc sv_2pvutf8 |
2857 | ||
2858 | Return a pointer to the UTF-8-encoded representation of the SV, and set *lp | |
2859 | to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
2860 | ||
2861 | Usually accessed via the C<SvPVutf8> macro. | |
2862 | ||
2863 | =cut | |
2864 | */ | |
645c22ef | 2865 | |
7340a771 GS |
2866 | char * |
2867 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
2868 | { | |
035cbb0e RGS |
2869 | sv_utf8_upgrade(sv); |
2870 | return lp ? SvPV(sv,*lp) : SvPV_nolen(sv); | |
7340a771 | 2871 | } |
1c846c1f | 2872 | |
7ee2227d | 2873 | |
645c22ef DM |
2874 | /* |
2875 | =for apidoc sv_2bool | |
2876 | ||
2877 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 2878 | sv_true() or its macro equivalent. |
645c22ef DM |
2879 | |
2880 | =cut | |
2881 | */ | |
2882 | ||
463ee0b2 | 2883 | bool |
864dbfa3 | 2884 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 2885 | { |
97aff369 | 2886 | dVAR; |
5b295bef | 2887 | SvGETMAGIC(sv); |
463ee0b2 | 2888 | |
a0d0e21e LW |
2889 | if (!SvOK(sv)) |
2890 | return 0; | |
2891 | if (SvROK(sv)) { | |
fabdb6c0 AL |
2892 | if (SvAMAGIC(sv)) { |
2893 | SV * const tmpsv = AMG_CALLun(sv,bool_); | |
2894 | if (tmpsv && (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) | |
2895 | return (bool)SvTRUE(tmpsv); | |
2896 | } | |
2897 | return SvRV(sv) != 0; | |
a0d0e21e | 2898 | } |
463ee0b2 | 2899 | if (SvPOKp(sv)) { |
53c1dcc0 AL |
2900 | register XPV* const Xpvtmp = (XPV*)SvANY(sv); |
2901 | if (Xpvtmp && | |
339049b0 | 2902 | (*sv->sv_u.svu_pv > '0' || |
11343788 | 2903 | Xpvtmp->xpv_cur > 1 || |
339049b0 | 2904 | (Xpvtmp->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
463ee0b2 LW |
2905 | return 1; |
2906 | else | |
2907 | return 0; | |
2908 | } | |
2909 | else { | |
2910 | if (SvIOKp(sv)) | |
2911 | return SvIVX(sv) != 0; | |
2912 | else { | |
2913 | if (SvNOKp(sv)) | |
2914 | return SvNVX(sv) != 0.0; | |
180488f8 | 2915 | else { |
f7877b28 | 2916 | if (isGV_with_GP(sv)) |
180488f8 NC |
2917 | return TRUE; |
2918 | else | |
2919 | return FALSE; | |
2920 | } | |
463ee0b2 LW |
2921 | } |
2922 | } | |
79072805 LW |
2923 | } |
2924 | ||
c461cf8f JH |
2925 | /* |
2926 | =for apidoc sv_utf8_upgrade | |
2927 | ||
78ea37eb | 2928 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 2929 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
2930 | Always sets the SvUTF8 flag to avoid future validity checks even |
2931 | if all the bytes have hibit clear. | |
c461cf8f | 2932 | |
13a6c0e0 JH |
2933 | This is not as a general purpose byte encoding to Unicode interface: |
2934 | use the Encode extension for that. | |
2935 | ||
8d6d96c1 HS |
2936 | =for apidoc sv_utf8_upgrade_flags |
2937 | ||
78ea37eb | 2938 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 2939 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
2940 | Always sets the SvUTF8 flag to avoid future validity checks even |
2941 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
2942 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
2943 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
2944 | ||
13a6c0e0 JH |
2945 | This is not as a general purpose byte encoding to Unicode interface: |
2946 | use the Encode extension for that. | |
2947 | ||
8d6d96c1 HS |
2948 | =cut |
2949 | */ | |
2950 | ||
2951 | STRLEN | |
2952 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
2953 | { | |
97aff369 | 2954 | dVAR; |
808c356f RGS |
2955 | if (sv == &PL_sv_undef) |
2956 | return 0; | |
e0e62c2a NIS |
2957 | if (!SvPOK(sv)) { |
2958 | STRLEN len = 0; | |
d52b7888 NC |
2959 | if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) { |
2960 | (void) sv_2pv_flags(sv,&len, flags); | |
2961 | if (SvUTF8(sv)) | |
2962 | return len; | |
2963 | } else { | |
2964 | (void) SvPV_force(sv,len); | |
2965 | } | |
e0e62c2a | 2966 | } |
4411f3b6 | 2967 | |
f5cee72b | 2968 | if (SvUTF8(sv)) { |
5fec3b1d | 2969 | return SvCUR(sv); |
f5cee72b | 2970 | } |
5fec3b1d | 2971 | |
765f542d NC |
2972 | if (SvIsCOW(sv)) { |
2973 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
2974 | } |
2975 | ||
88632417 | 2976 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 2977 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 2978 | else { /* Assume Latin-1/EBCDIC */ |
c4e7c712 NC |
2979 | /* This function could be much more efficient if we |
2980 | * had a FLAG in SVs to signal if there are any hibit | |
2981 | * chars in the PV. Given that there isn't such a flag | |
2982 | * make the loop as fast as possible. */ | |
00b6aa41 | 2983 | const U8 * const s = (U8 *) SvPVX_const(sv); |
c4420975 | 2984 | const U8 * const e = (U8 *) SvEND(sv); |
93524f2b | 2985 | const U8 *t = s; |
c4e7c712 NC |
2986 | |
2987 | while (t < e) { | |
53c1dcc0 | 2988 | const U8 ch = *t++; |
00b6aa41 AL |
2989 | /* Check for hi bit */ |
2990 | if (!NATIVE_IS_INVARIANT(ch)) { | |
2991 | STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */ | |
2992 | U8 * const recoded = bytes_to_utf8((U8*)s, &len); | |
2993 | ||
2994 | SvPV_free(sv); /* No longer using what was there before. */ | |
2995 | SvPV_set(sv, (char*)recoded); | |
2996 | SvCUR_set(sv, len - 1); | |
2997 | SvLEN_set(sv, len); /* No longer know the real size. */ | |
c4e7c712 | 2998 | break; |
00b6aa41 | 2999 | } |
c4e7c712 NC |
3000 | } |
3001 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ | |
3002 | SvUTF8_on(sv); | |
560a288e | 3003 | } |
4411f3b6 | 3004 | return SvCUR(sv); |
560a288e GS |
3005 | } |
3006 | ||
c461cf8f JH |
3007 | /* |
3008 | =for apidoc sv_utf8_downgrade | |
3009 | ||
78ea37eb TS |
3010 | Attempts to convert the PV of an SV from characters to bytes. |
3011 | If the PV contains a character beyond byte, this conversion will fail; | |
3012 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
3013 | true, croaks. |
3014 | ||
13a6c0e0 JH |
3015 | This is not as a general purpose Unicode to byte encoding interface: |
3016 | use the Encode extension for that. | |
3017 | ||
c461cf8f JH |
3018 | =cut |
3019 | */ | |
3020 | ||
560a288e GS |
3021 | bool |
3022 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
3023 | { | |
97aff369 | 3024 | dVAR; |
78ea37eb | 3025 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 3026 | if (SvCUR(sv)) { |
03cfe0ae | 3027 | U8 *s; |
652088fc | 3028 | STRLEN len; |
fa301091 | 3029 | |
765f542d NC |
3030 | if (SvIsCOW(sv)) { |
3031 | sv_force_normal_flags(sv, 0); | |
3032 | } | |
03cfe0ae NIS |
3033 | s = (U8 *) SvPV(sv, len); |
3034 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
3035 | if (fail_ok) |
3036 | return FALSE; | |
3037 | else { | |
3038 | if (PL_op) | |
3039 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 3040 | OP_DESC(PL_op)); |
fa301091 JH |
3041 | else |
3042 | Perl_croak(aTHX_ "Wide character"); | |
3043 | } | |
4b3603a4 | 3044 | } |
b162af07 | 3045 | SvCUR_set(sv, len); |
67e989fb | 3046 | } |
560a288e | 3047 | } |
ffebcc3e | 3048 | SvUTF8_off(sv); |
560a288e GS |
3049 | return TRUE; |
3050 | } | |
3051 | ||
c461cf8f JH |
3052 | /* |
3053 | =for apidoc sv_utf8_encode | |
3054 | ||
78ea37eb TS |
3055 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
3056 | flag off so that it looks like octets again. | |
c461cf8f JH |
3057 | |
3058 | =cut | |
3059 | */ | |
3060 | ||
560a288e GS |
3061 | void |
3062 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
3063 | { | |
4c94c214 NC |
3064 | if (SvIsCOW(sv)) { |
3065 | sv_force_normal_flags(sv, 0); | |
3066 | } | |
3067 | if (SvREADONLY(sv)) { | |
3068 | Perl_croak(aTHX_ PL_no_modify); | |
3069 | } | |
a5f5288a | 3070 | (void) sv_utf8_upgrade(sv); |
560a288e GS |
3071 | SvUTF8_off(sv); |
3072 | } | |
3073 | ||
4411f3b6 NIS |
3074 | /* |
3075 | =for apidoc sv_utf8_decode | |
3076 | ||
78ea37eb TS |
3077 | If the PV of the SV is an octet sequence in UTF-8 |
3078 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
3079 | so that it looks like a character. If the PV contains only single-byte | |
3080 | characters, the C<SvUTF8> flag stays being off. | |
3081 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
3082 | |
3083 | =cut | |
3084 | */ | |
3085 | ||
560a288e GS |
3086 | bool |
3087 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
3088 | { | |
78ea37eb | 3089 | if (SvPOKp(sv)) { |
93524f2b NC |
3090 | const U8 *c; |
3091 | const U8 *e; | |
9cbac4c7 | 3092 | |
645c22ef DM |
3093 | /* The octets may have got themselves encoded - get them back as |
3094 | * bytes | |
3095 | */ | |
3096 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
3097 | return FALSE; |
3098 | ||
3099 | /* it is actually just a matter of turning the utf8 flag on, but | |
3100 | * we want to make sure everything inside is valid utf8 first. | |
3101 | */ | |
93524f2b | 3102 | c = (const U8 *) SvPVX_const(sv); |
63cd0674 | 3103 | if (!is_utf8_string(c, SvCUR(sv)+1)) |
67e989fb | 3104 | return FALSE; |
93524f2b | 3105 | e = (const U8 *) SvEND(sv); |
511c2ff0 | 3106 | while (c < e) { |
b64e5050 | 3107 | const U8 ch = *c++; |
c4d5f83a | 3108 | if (!UTF8_IS_INVARIANT(ch)) { |
67e989fb JH |
3109 | SvUTF8_on(sv); |
3110 | break; | |
3111 | } | |
560a288e | 3112 | } |
560a288e GS |
3113 | } |
3114 | return TRUE; | |
3115 | } | |
3116 | ||
954c1994 GS |
3117 | /* |
3118 | =for apidoc sv_setsv | |
3119 | ||
645c22ef DM |
3120 | Copies the contents of the source SV C<ssv> into the destination SV |
3121 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3122 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3123 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3124 | content of the destination. | |
3125 | ||
3126 | You probably want to use one of the assortment of wrappers, such as | |
3127 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3128 | C<SvSetMagicSV_nosteal>. | |
3129 | ||
8d6d96c1 HS |
3130 | =for apidoc sv_setsv_flags |
3131 | ||
645c22ef DM |
3132 | Copies the contents of the source SV C<ssv> into the destination SV |
3133 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3134 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3135 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3136 | content of the destination. | |
3137 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
5fcdf167 NC |
3138 | C<ssv> if appropriate, else not. If the C<flags> parameter has the |
3139 | C<NOSTEAL> bit set then the buffers of temps will not be stolen. <sv_setsv> | |
3140 | and C<sv_setsv_nomg> are implemented in terms of this function. | |
645c22ef DM |
3141 | |
3142 | You probably want to use one of the assortment of wrappers, such as | |
3143 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3144 | C<SvSetMagicSV_nosteal>. | |
3145 | ||
3146 | This is the primary function for copying scalars, and most other | |
3147 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
3148 | |
3149 | =cut | |
3150 | */ | |
3151 | ||
5d0301b7 | 3152 | static void |
2eb42952 | 3153 | S_glob_assign_glob(pTHX_ SV *dstr, SV *sstr, const int dtype) |
5d0301b7 | 3154 | { |
70cd14a1 | 3155 | I32 mro_changes = 0; /* 1 = method, 2 = isa */ |
dd69841b | 3156 | |
5d0301b7 NC |
3157 | if (dtype != SVt_PVGV) { |
3158 | const char * const name = GvNAME(sstr); | |
3159 | const STRLEN len = GvNAMELEN(sstr); | |
0d092c36 | 3160 | { |
f7877b28 NC |
3161 | if (dtype >= SVt_PV) { |
3162 | SvPV_free(dstr); | |
3163 | SvPV_set(dstr, 0); | |
3164 | SvLEN_set(dstr, 0); | |
3165 | SvCUR_set(dstr, 0); | |
3166 | } | |
0d092c36 | 3167 | SvUPGRADE(dstr, SVt_PVGV); |
dedf8e73 | 3168 | (void)SvOK_off(dstr); |
2e5b91de NC |
3169 | /* FIXME - why are we doing this, then turning it off and on again |
3170 | below? */ | |
3171 | isGV_with_GP_on(dstr); | |
f7877b28 | 3172 | } |
5d0301b7 NC |
3173 | GvSTASH(dstr) = GvSTASH(sstr); |
3174 | if (GvSTASH(dstr)) | |
3175 | Perl_sv_add_backref(aTHX_ (SV*)GvSTASH(dstr), dstr); | |
ae8cc45f | 3176 | gv_name_set((GV *)dstr, name, len, GV_ADD); |
5d0301b7 NC |
3177 | SvFAKE_on(dstr); /* can coerce to non-glob */ |
3178 | } | |
3179 | ||
3180 | #ifdef GV_UNIQUE_CHECK | |
3181 | if (GvUNIQUE((GV*)dstr)) { | |
3182 | Perl_croak(aTHX_ PL_no_modify); | |
3183 | } | |
3184 | #endif | |
3185 | ||
dd69841b BB |
3186 | if(GvGP((GV*)sstr)) { |
3187 | /* If source has method cache entry, clear it */ | |
3188 | if(GvCVGEN(sstr)) { | |
3189 | SvREFCNT_dec(GvCV(sstr)); | |
3190 | GvCV(sstr) = NULL; | |
3191 | GvCVGEN(sstr) = 0; | |
3192 | } | |
3193 | /* If source has a real method, then a method is | |
3194 | going to change */ | |
3195 | else if(GvCV((GV*)sstr)) { | |
70cd14a1 | 3196 | mro_changes = 1; |
dd69841b BB |
3197 | } |
3198 | } | |
3199 | ||
3200 | /* If dest already had a real method, that's a change as well */ | |
70cd14a1 CB |
3201 | if(!mro_changes && GvGP((GV*)dstr) && GvCVu((GV*)dstr)) { |
3202 | mro_changes = 1; | |
dd69841b BB |
3203 | } |
3204 | ||
70cd14a1 CB |
3205 | if(strEQ(GvNAME((GV*)dstr),"ISA")) |
3206 | mro_changes = 2; | |
3207 | ||
f7877b28 | 3208 | gp_free((GV*)dstr); |
2e5b91de | 3209 | isGV_with_GP_off(dstr); |
5d0301b7 | 3210 | (void)SvOK_off(dstr); |
2e5b91de | 3211 | isGV_with_GP_on(dstr); |
dedf8e73 | 3212 | GvINTRO_off(dstr); /* one-shot flag */ |
5d0301b7 NC |
3213 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
3214 | if (SvTAINTED(sstr)) | |
3215 | SvTAINT(dstr); | |
3216 | if (GvIMPORTED(dstr) != GVf_IMPORTED | |
3217 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3218 | { | |
3219 | GvIMPORTED_on(dstr); | |
3220 | } | |
3221 | GvMULTI_on(dstr); | |
70cd14a1 CB |
3222 | if(mro_changes == 2) mro_isa_changed_in(GvSTASH(dstr)); |
3223 | else if(mro_changes) mro_method_changed_in(GvSTASH(dstr)); | |
5d0301b7 NC |
3224 | return; |
3225 | } | |
3226 | ||
b8473700 | 3227 | static void |
2eb42952 | 3228 | S_glob_assign_ref(pTHX_ SV *dstr, SV *sstr) { |
b8473700 NC |
3229 | SV * const sref = SvREFCNT_inc(SvRV(sstr)); |
3230 | SV *dref = NULL; | |
3231 | const int intro = GvINTRO(dstr); | |
2440974c | 3232 | SV **location; |
3386d083 | 3233 | U8 import_flag = 0; |
27242d61 NC |
3234 | const U32 stype = SvTYPE(sref); |
3235 | ||
b8473700 NC |
3236 | |
3237 | #ifdef GV_UNIQUE_CHECK | |
3238 | if (GvUNIQUE((GV*)dstr)) { | |
3239 | Perl_croak(aTHX_ PL_no_modify); | |
3240 | } | |
3241 | #endif | |
3242 | ||
3243 | if (intro) { | |
3244 | GvINTRO_off(dstr); /* one-shot flag */ | |
3245 | GvLINE(dstr) = CopLINE(PL_curcop); | |
3246 | GvEGV(dstr) = (GV*)dstr; | |
3247 | } | |
3248 | GvMULTI_on(dstr); | |
27242d61 | 3249 | switch (stype) { |
b8473700 | 3250 | case SVt_PVCV: |
27242d61 NC |
3251 | location = (SV **) &GvCV(dstr); |
3252 | import_flag = GVf_IMPORTED_CV; | |
3253 | goto common; | |
3254 | case SVt_PVHV: | |
3255 | location = (SV **) &GvHV(dstr); | |
3256 | import_flag = GVf_IMPORTED_HV; | |
3257 | goto common; | |
3258 | case SVt_PVAV: | |
3259 | location = (SV **) &GvAV(dstr); | |
3260 | import_flag = GVf_IMPORTED_AV; | |
3261 | goto common; | |
3262 | case SVt_PVIO: | |
3263 | location = (SV **) &GvIOp(dstr); | |
3264 | goto common; | |
3265 | case SVt_PVFM: | |
3266 | location = (SV **) &GvFORM(dstr); | |
3267 | default: | |
3268 | location = &GvSV(dstr); | |
3269 | import_flag = GVf_IMPORTED_SV; | |
3270 | common: | |
b8473700 | 3271 | if (intro) { |
27242d61 | 3272 | if (stype == SVt_PVCV) { |
5f2fca8a BB |
3273 | /*if (GvCVGEN(dstr) && (GvCV(dstr) != (CV*)sref || GvCVGEN(dstr))) {*/ |
3274 | if (GvCVGEN(dstr)) { | |
27242d61 NC |
3275 | SvREFCNT_dec(GvCV(dstr)); |
3276 | GvCV(dstr) = NULL; | |
3277 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ | |
27242d61 | 3278 | } |
b8473700 | 3279 | } |
27242d61 | 3280 | SAVEGENERICSV(*location); |
b8473700 NC |
3281 | } |
3282 | else | |
27242d61 | 3283 | dref = *location; |
5f2fca8a | 3284 | if (stype == SVt_PVCV && (*location != sref || GvCVGEN(dstr))) { |
27242d61 | 3285 | CV* const cv = (CV*)*location; |
b8473700 NC |
3286 | if (cv) { |
3287 | if (!GvCVGEN((GV*)dstr) && | |
3288 | (CvROOT(cv) || CvXSUB(cv))) | |
3289 | { | |
3290 | /* Redefining a sub - warning is mandatory if | |
3291 | it was a const and its value changed. */ | |
3292 | if (CvCONST(cv) && CvCONST((CV*)sref) | |
3293 | && cv_const_sv(cv) == cv_const_sv((CV*)sref)) { | |
6f207bd3 | 3294 | NOOP; |
b8473700 NC |
3295 | /* They are 2 constant subroutines generated from |
3296 | the same constant. This probably means that | |
3297 | they are really the "same" proxy subroutine | |
3298 | instantiated in 2 places. Most likely this is | |
3299 | when a constant is exported twice. Don't warn. | |
3300 | */ | |
3301 | } | |
3302 | else if (ckWARN(WARN_REDEFINE) | |
3303 | || (CvCONST(cv) | |
3304 | && (!CvCONST((CV*)sref) | |
3305 | || sv_cmp(cv_const_sv(cv), | |
3306 | cv_const_sv((CV*)sref))))) { | |
3307 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
10edeb5d JH |
3308 | (const char *) |
3309 | (CvCONST(cv) | |
3310 | ? "Constant subroutine %s::%s redefined" | |
3311 | : "Subroutine %s::%s redefined"), | |
b8473700 NC |
3312 | HvNAME_get(GvSTASH((GV*)dstr)), |
3313 | GvENAME((GV*)dstr)); | |
3314 | } | |
3315 | } | |
3316 | if (!intro) | |
cbf82dd0 NC |
3317 | cv_ckproto_len(cv, (GV*)dstr, |
3318 | SvPOK(sref) ? SvPVX_const(sref) : NULL, | |
3319 | SvPOK(sref) ? SvCUR(sref) : 0); | |
b8473700 | 3320 | } |
b8473700 NC |
3321 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3322 | GvASSUMECV_on(dstr); | |
dd69841b | 3323 | if(GvSTASH(dstr)) mro_method_changed_in(GvSTASH(dstr)); /* sub foo { 1 } sub bar { 2 } *bar = \&foo */ |
b8473700 | 3324 | } |
2440974c | 3325 | *location = sref; |
3386d083 NC |
3326 | if (import_flag && !(GvFLAGS(dstr) & import_flag) |
3327 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) { | |
3328 | GvFLAGS(dstr) |= import_flag; | |
b8473700 NC |
3329 | } |
3330 | break; | |
3331 | } | |
b37c2d43 | 3332 | SvREFCNT_dec(dref); |
b8473700 NC |
3333 | if (SvTAINTED(sstr)) |
3334 | SvTAINT(dstr); | |
3335 | return; | |
3336 | } | |
3337 | ||
8d6d96c1 HS |
3338 | void |
3339 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
3340 | { | |
97aff369 | 3341 | dVAR; |
8990e307 LW |
3342 | register U32 sflags; |
3343 | register int dtype; | |
42d0e0b7 | 3344 | register svtype stype; |
463ee0b2 | 3345 | |
79072805 LW |
3346 | if (sstr == dstr) |
3347 | return; | |
29f4f0ab NC |
3348 | |
3349 | if (SvIS_FREED(dstr)) { | |
3350 | Perl_croak(aTHX_ "panic: attempt to copy value %" SVf | |
be2597df | 3351 | " to a freed scalar %p", SVfARG(sstr), (void *)dstr); |
29f4f0ab | 3352 | } |
765f542d | 3353 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 3354 | if (!sstr) |
3280af22 | 3355 | sstr = &PL_sv_undef; |
29f4f0ab | 3356 | if (SvIS_FREED(sstr)) { |
6c9570dc MHM |
3357 | Perl_croak(aTHX_ "panic: attempt to copy freed scalar %p to %p", |
3358 | (void*)sstr, (void*)dstr); | |
29f4f0ab | 3359 | } |
8990e307 LW |
3360 | stype = SvTYPE(sstr); |
3361 | dtype = SvTYPE(dstr); | |
79072805 | 3362 | |
52944de8 | 3363 | (void)SvAMAGIC_off(dstr); |
7a5fa8a2 | 3364 | if ( SvVOK(dstr) ) |
ece467f9 JP |
3365 | { |
3366 | /* need to nuke the magic */ | |
3367 | mg_free(dstr); | |
3368 | SvRMAGICAL_off(dstr); | |
3369 | } | |
9e7bc3e8 | 3370 | |
463ee0b2 | 3371 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 3372 | |
8990e307 | 3373 | switch (stype) { |
79072805 | 3374 | case SVt_NULL: |
aece5585 | 3375 | undef_sstr: |
20408e3c GS |
3376 | if (dtype != SVt_PVGV) { |
3377 | (void)SvOK_off(dstr); | |
3378 | return; | |
3379 | } | |
3380 | break; | |
463ee0b2 | 3381 | case SVt_IV: |
aece5585 GA |
3382 | if (SvIOK(sstr)) { |
3383 | switch (dtype) { | |
3384 | case SVt_NULL: | |
8990e307 | 3385 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
3386 | break; |
3387 | case SVt_NV: | |
aece5585 GA |
3388 | case SVt_RV: |
3389 | case SVt_PV: | |
a0d0e21e | 3390 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 | 3391 | break; |
010be86b NC |
3392 | case SVt_PVGV: |
3393 | goto end_of_first_switch; | |
aece5585 GA |
3394 | } |
3395 | (void)SvIOK_only(dstr); | |
45977657 | 3396 | SvIV_set(dstr, SvIVX(sstr)); |
25da4f38 IZ |
3397 | if (SvIsUV(sstr)) |
3398 | SvIsUV_on(dstr); | |
37c25af0 NC |
3399 | /* SvTAINTED can only be true if the SV has taint magic, which in |
3400 | turn means that the SV type is PVMG (or greater). This is the | |
3401 | case statement for SVt_IV, so this cannot be true (whatever gcov | |
3402 | may say). */ | |
3403 | assert(!SvTAINTED(sstr)); | |
aece5585 | 3404 | return; |
8990e307 | 3405 | } |
aece5585 GA |
3406 | goto undef_sstr; |
3407 | ||
463ee0b2 | 3408 | case SVt_NV: |
aece5585 GA |
3409 | if (SvNOK(sstr)) { |
3410 | switch (dtype) { | |
3411 | case SVt_NULL: | |
3412 | case SVt_IV: | |
8990e307 | 3413 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
3414 | break; |
3415 | case SVt_RV: | |
3416 | case SVt_PV: | |
3417 | case SVt_PVIV: | |
a0d0e21e | 3418 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 | 3419 | break; |
010be86b NC |
3420 | case SVt_PVGV: |
3421 | goto end_of_first_switch; | |
aece5585 | 3422 | } |
9d6ce603 | 3423 | SvNV_set(dstr, SvNVX(sstr)); |
aece5585 | 3424 | (void)SvNOK_only(dstr); |
37c25af0 NC |
3425 | /* SvTAINTED can only be true if the SV has taint magic, which in |
3426 | turn means that the SV type is PVMG (or greater). This is the | |
3427 | case statement for SVt_NV, so this cannot be true (whatever gcov | |
3428 | may say). */ | |
3429 | assert(!SvTAINTED(sstr)); | |
aece5585 | 3430 | return; |
8990e307 | 3431 | } |
aece5585 GA |
3432 | goto undef_sstr; |
3433 | ||
ed6116ce | 3434 | case SVt_RV: |
8990e307 | 3435 | if (dtype < SVt_RV) |
ed6116ce | 3436 | sv_upgrade(dstr, SVt_RV); |
ed6116ce | 3437 | break; |
fc36a67e | 3438 | case SVt_PVFM: |
f8c7b90f | 3439 | #ifdef PERL_OLD_COPY_ON_WRITE |
d89fc664 NC |
3440 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
3441 | if (dtype < SVt_PVIV) | |
3442 | sv_upgrade(dstr, SVt_PVIV); | |
3443 | break; | |
3444 | } | |
3445 | /* Fall through */ | |
3446 | #endif | |
3447 | case SVt_PV: | |
8990e307 | 3448 | if (dtype < SVt_PV) |
463ee0b2 | 3449 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
3450 | break; |
3451 | case SVt_PVIV: | |
8990e307 | 3452 | if (dtype < SVt_PVIV) |
463ee0b2 | 3453 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
3454 | break; |
3455 | case SVt_PVNV: | |
8990e307 | 3456 | if (dtype < SVt_PVNV) |
463ee0b2 | 3457 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 3458 | break; |
489f7bfe | 3459 | default: |
a3b680e6 AL |
3460 | { |
3461 | const char * const type = sv_reftype(sstr,0); | |
533c011a | 3462 | if (PL_op) |
a3b680e6 | 3463 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", type, OP_NAME(PL_op)); |
4633a7c4 | 3464 | else |
a3b680e6 AL |
3465 | Perl_croak(aTHX_ "Bizarre copy of %s", type); |
3466 | } | |
4633a7c4 LW |
3467 | break; |
3468 | ||
cecf5685 | 3469 | /* case SVt_BIND: */ |
39cb70dc | 3470 | case SVt_PVLV: |
79072805 | 3471 | case SVt_PVGV: |
cecf5685 | 3472 | if (isGV_with_GP(sstr) && dtype <= SVt_PVGV) { |
d4c19fe8 | 3473 | glob_assign_glob(dstr, sstr, dtype); |
b8c701c1 | 3474 | return; |
79072805 | 3475 | } |
cecf5685 | 3476 | /* SvVALID means that this PVGV is playing at being an FBM. */ |
5f66b61c | 3477 | /*FALLTHROUGH*/ |
79072805 | 3478 | |
489f7bfe | 3479 | case SVt_PVMG: |
8d6d96c1 | 3480 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 3481 | mg_get(sstr); |
1d9c78c6 | 3482 | if (SvTYPE(sstr) != stype) { |
973f89ab | 3483 | stype = SvTYPE(sstr); |
cecf5685 | 3484 | if (isGV_with_GP(sstr) && stype == SVt_PVGV && dtype <= SVt_PVGV) { |
d4c19fe8 | 3485 | glob_assign_glob(dstr, sstr, dtype); |
b8c701c1 NC |
3486 | return; |
3487 | } | |
973f89ab CS |
3488 | } |
3489 | } | |
ded42b9f | 3490 | if (stype == SVt_PVLV) |
862a34c6 | 3491 | SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 3492 | else |
42d0e0b7 | 3493 | SvUPGRADE(dstr, (svtype)stype); |
79072805 | 3494 | } |
010be86b | 3495 | end_of_first_switch: |
79072805 | 3496 | |
ff920335 NC |
3497 | /* dstr may have been upgraded. */ |
3498 | dtype = SvTYPE(dstr); | |
8990e307 LW |
3499 | sflags = SvFLAGS(sstr); |
3500 | ||
ba2fdce6 | 3501 | if (dtype == SVt_PVCV || dtype == SVt_PVFM) { |
85324b4d NC |
3502 | /* Assigning to a subroutine sets the prototype. */ |
3503 | if (SvOK(sstr)) { | |
3504 | STRLEN len; | |
3505 | const char *const ptr = SvPV_const(sstr, len); | |
3506 | ||
3507 | SvGROW(dstr, len + 1); | |
3508 | Copy(ptr, SvPVX(dstr), len + 1, char); | |
3509 | SvCUR_set(dstr, len); | |
fcddd32e | 3510 | SvPOK_only(dstr); |
ba2fdce6 | 3511 | SvFLAGS(dstr) |= sflags & SVf_UTF8; |
85324b4d NC |
3512 | } else { |
3513 | SvOK_off(dstr); | |
3514 | } | |
ba2fdce6 NC |
3515 | } else if (dtype == SVt_PVAV || dtype == SVt_PVHV) { |
3516 | const char * const type = sv_reftype(dstr,0); | |
3517 | if (PL_op) | |
3518 | Perl_croak(aTHX_ "Cannot copy to %s in %s", type, OP_NAME(PL_op)); | |
3519 | else | |
3520 | Perl_croak(aTHX_ "Cannot copy to %s", type); | |
85324b4d | 3521 | } else if (sflags & SVf_ROK) { |
cecf5685 NC |
3522 | if (isGV_with_GP(dstr) && dtype == SVt_PVGV |
3523 | && SvTYPE(SvRV(sstr)) == SVt_PVGV) { | |
acaa9288 NC |
3524 | sstr = SvRV(sstr); |
3525 | if (sstr == dstr) { | |
3526 | if (GvIMPORTED(dstr) != GVf_IMPORTED | |
3527 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3528 | { | |
3529 | GvIMPORTED_on(dstr); | |
3530 | } | |
3531 | GvMULTI_on(dstr); | |
3532 | return; | |
3533 | } | |
d4c19fe8 | 3534 | glob_assign_glob(dstr, sstr, dtype); |
acaa9288 NC |
3535 | return; |
3536 | } | |
3537 | ||
8990e307 | 3538 | if (dtype >= SVt_PV) { |
b8c701c1 | 3539 | if (dtype == SVt_PVGV) { |
d4c19fe8 | 3540 | glob_assign_ref(dstr, sstr); |
b8c701c1 NC |
3541 | return; |
3542 | } | |
3f7c398e | 3543 | if (SvPVX_const(dstr)) { |
8bd4d4c5 | 3544 | SvPV_free(dstr); |
b162af07 SP |
3545 | SvLEN_set(dstr, 0); |
3546 | SvCUR_set(dstr, 0); | |
a0d0e21e | 3547 | } |
8990e307 | 3548 | } |
a0d0e21e | 3549 | (void)SvOK_off(dstr); |
b162af07 | 3550 | SvRV_set(dstr, SvREFCNT_inc(SvRV(sstr))); |
96d4b0ee | 3551 | SvFLAGS(dstr) |= sflags & SVf_ROK; |
dfd48732 NC |
3552 | assert(!(sflags & SVp_NOK)); |
3553 | assert(!(sflags & SVp_IOK)); | |
3554 | assert(!(sflags & SVf_NOK)); | |
3555 | assert(!(sflags & SVf_IOK)); | |
ed6116ce | 3556 | } |
cecf5685 | 3557 | else if (dtype == SVt_PVGV && isGV_with_GP(dstr)) { |
c0c44674 NC |
3558 | if (!(sflags & SVf_OK)) { |
3559 | if (ckWARN(WARN_MISC)) | |
3560 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
3561 | "Undefined value assigned to typeglob"); | |
3562 | } | |
3563 | else { | |
3564 | GV *gv = gv_fetchsv(sstr, GV_ADD, SVt_PVGV); | |
3565 | if (dstr != (SV*)gv) { | |
3566 | if (GvGP(dstr)) | |
3567 | gp_free((GV*)dstr); | |
3568 | GvGP(dstr) = gp_ref(GvGP(gv)); | |
3569 | } | |
3570 | } | |
3571 | } | |
8990e307 | 3572 | else if (sflags & SVp_POK) { |
765f542d | 3573 | bool isSwipe = 0; |
79072805 LW |
3574 | |
3575 | /* | |
3576 | * Check to see if we can just swipe the string. If so, it's a | |
3577 | * possible small lose on short strings, but a big win on long ones. | |
3f7c398e SP |
3578 | * It might even be a win on short strings if SvPVX_const(dstr) |
3579 | * has to be allocated and SvPVX_const(sstr) has to be freed. | |
34482cd6 NC |
3580 | * Likewise if we can set up COW rather than doing an actual copy, we |
3581 | * drop to the else clause, as the swipe code and the COW setup code | |
3582 | * have much in common. | |
79072805 LW |
3583 | */ |
3584 | ||
120fac95 NC |
3585 | /* Whichever path we take through the next code, we want this true, |
3586 | and doing it now facilitates the COW check. */ | |
3587 | (void)SvPOK_only(dstr); | |
3588 | ||
765f542d | 3589 | if ( |
34482cd6 NC |
3590 | /* If we're already COW then this clause is not true, and if COW |
3591 | is allowed then we drop down to the else and make dest COW | |
3592 | with us. If caller hasn't said that we're allowed to COW | |
3593 | shared hash keys then we don't do the COW setup, even if the | |
3594 | source scalar is a shared hash key scalar. */ | |
3595 | (((flags & SV_COW_SHARED_HASH_KEYS) | |
3596 | ? (sflags & (SVf_FAKE|SVf_READONLY)) != (SVf_FAKE|SVf_READONLY) | |
3597 | : 1 /* If making a COW copy is forbidden then the behaviour we | |
3598 | desire is as if the source SV isn't actually already | |
3599 | COW, even if it is. So we act as if the source flags | |
3600 | are not COW, rather than actually testing them. */ | |
3601 | ) | |
f8c7b90f | 3602 | #ifndef PERL_OLD_COPY_ON_WRITE |
34482cd6 NC |
3603 | /* The change that added SV_COW_SHARED_HASH_KEYS makes the logic |
3604 | when PERL_OLD_COPY_ON_WRITE is defined a little wrong. | |
3605 | Conceptually PERL_OLD_COPY_ON_WRITE being defined should | |
3606 | override SV_COW_SHARED_HASH_KEYS, because it means "always COW" | |
3607 | but in turn, it's somewhat dead code, never expected to go | |
3608 | live, but more kept as a placeholder on how to do it better | |
3609 | in a newer implementation. */ | |
3610 | /* If we are COW and dstr is a suitable target then we drop down | |
3611 | into the else and make dest a COW of us. */ | |
b8f9541a NC |
3612 | || (SvFLAGS(dstr) & CAN_COW_MASK) != CAN_COW_FLAGS |
3613 | #endif | |
3614 | ) | |
765f542d | 3615 | && |
765f542d NC |
3616 | !(isSwipe = |
3617 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
3618 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
5fcdf167 NC |
3619 | (!(flags & SV_NOSTEAL)) && |
3620 | /* and we're allowed to steal temps */ | |
765f542d NC |
3621 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ |
3622 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 3623 | /* and won't be needed again, potentially */ |
765f542d | 3624 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
f8c7b90f | 3625 | #ifdef PERL_OLD_COPY_ON_WRITE |
cb23d5b1 NC |
3626 | && ((flags & SV_COW_SHARED_HASH_KEYS) |
3627 | ? (!((sflags & CAN_COW_MASK) == CAN_COW_FLAGS | |
3628 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS | |
3629 | && SvTYPE(sstr) >= SVt_PVIV)) | |
3630 | : 1) | |
765f542d NC |
3631 | #endif |
3632 | ) { | |
3633 | /* Failed the swipe test, and it's not a shared hash key either. | |
3634 | Have to copy the string. */ | |
3635 | STRLEN len = SvCUR(sstr); | |
3636 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
3f7c398e | 3637 | Move(SvPVX_const(sstr),SvPVX(dstr),len,char); |
765f542d NC |
3638 | SvCUR_set(dstr, len); |
3639 | *SvEND(dstr) = '\0'; | |
765f542d | 3640 | } else { |
f8c7b90f | 3641 | /* If PERL_OLD_COPY_ON_WRITE is not defined, then isSwipe will always |
765f542d | 3642 | be true in here. */ |
765f542d NC |
3643 | /* Either it's a shared hash key, or it's suitable for |
3644 | copy-on-write or we can swipe the string. */ | |
46187eeb | 3645 | if (DEBUG_C_TEST) { |
ed252734 | 3646 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
3647 | sv_dump(sstr); |
3648 | sv_dump(dstr); | |
46187eeb | 3649 | } |
f8c7b90f | 3650 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
3651 | if (!isSwipe) { |
3652 | /* I believe I should acquire a global SV mutex if | |
3653 | it's a COW sv (not a shared hash key) to stop | |
3654 | it going un copy-on-write. | |
3655 | If the source SV has gone un copy on write between up there | |
3656 | and down here, then (assert() that) it is of the correct | |
3657 | form to make it copy on write again */ | |
3658 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
3659 | != (SVf_FAKE | SVf_READONLY)) { | |
3660 | SvREADONLY_on(sstr); | |
3661 | SvFAKE_on(sstr); | |
3662 | /* Make the source SV into a loop of 1. | |
3663 | (about to become 2) */ | |
a29f6d03 | 3664 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
3665 | } |
3666 | } | |
3667 | #endif | |
3668 | /* Initial code is common. */ | |
94010e71 NC |
3669 | if (SvPVX_const(dstr)) { /* we know that dtype >= SVt_PV */ |
3670 | SvPV_free(dstr); | |
79072805 | 3671 | } |
765f542d | 3672 | |
765f542d NC |
3673 | if (!isSwipe) { |
3674 | /* making another shared SV. */ | |
3675 | STRLEN cur = SvCUR(sstr); | |
3676 | STRLEN len = SvLEN(sstr); | |
f8c7b90f | 3677 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 3678 | if (len) { |
b8f9541a | 3679 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
3680 | /* SvIsCOW_normal */ |
3681 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
3682 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
3683 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 3684 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
a604c751 NC |
3685 | } else |
3686 | #endif | |
3687 | { | |
765f542d | 3688 | /* SvIsCOW_shared_hash */ |
46187eeb NC |
3689 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
3690 | "Copy on write: Sharing hash\n")); | |
b8f9541a | 3691 | |
bdd68bc3 | 3692 | assert (SvTYPE(dstr) >= SVt_PV); |
765f542d | 3693 | SvPV_set(dstr, |
d1db91c6 | 3694 | HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr))))); |
bdd68bc3 | 3695 | } |
87a1ef3d SP |
3696 | SvLEN_set(dstr, len); |
3697 | SvCUR_set(dstr, cur); | |
765f542d NC |
3698 | SvREADONLY_on(dstr); |
3699 | SvFAKE_on(dstr); | |
3700 | /* Relesase a global SV mutex. */ | |
3701 | } | |
3702 | else | |
765f542d | 3703 | { /* Passes the swipe test. */ |
78d1e721 | 3704 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
765f542d NC |
3705 | SvLEN_set(dstr, SvLEN(sstr)); |
3706 | SvCUR_set(dstr, SvCUR(sstr)); | |
3707 | ||
3708 | SvTEMP_off(dstr); | |
3709 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
6136c704 | 3710 | SvPV_set(sstr, NULL); |
765f542d NC |
3711 | SvLEN_set(sstr, 0); |
3712 | SvCUR_set(sstr, 0); | |
3713 | SvTEMP_off(sstr); | |
3714 | } | |
3715 | } | |
8990e307 | 3716 | if (sflags & SVp_NOK) { |
9d6ce603 | 3717 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 | 3718 | } |
8990e307 | 3719 | if (sflags & SVp_IOK) { |
88555484 | 3720 | SvOOK_off(dstr); |
23525414 NC |
3721 | SvIV_set(dstr, SvIVX(sstr)); |
3722 | /* Must do this otherwise some other overloaded use of 0x80000000 | |
3723 | gets confused. I guess SVpbm_VALID */ | |
2b1c7e3e | 3724 | if (sflags & SVf_IVisUV) |
25da4f38 | 3725 | SvIsUV_on(dstr); |
79072805 | 3726 | } |
96d4b0ee | 3727 | SvFLAGS(dstr) |= sflags & (SVf_IOK|SVp_IOK|SVf_NOK|SVp_NOK|SVf_UTF8); |
4f2da183 | 3728 | { |
b0a11fe1 | 3729 | const MAGIC * const smg = SvVSTRING_mg(sstr); |
4f2da183 NC |
3730 | if (smg) { |
3731 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, | |
3732 | smg->mg_ptr, smg->mg_len); | |
3733 | SvRMAGICAL_on(dstr); | |
3734 | } | |
7a5fa8a2 | 3735 | } |
79072805 | 3736 | } |
5d581361 | 3737 | else if (sflags & (SVp_IOK|SVp_NOK)) { |
c2468cc7 | 3738 | (void)SvOK_off(dstr); |
96d4b0ee | 3739 | SvFLAGS(dstr) |= sflags & (SVf_IOK|SVp_IOK|SVf_IVisUV|SVf_NOK|SVp_NOK); |
5d581361 NC |
3740 | if (sflags & SVp_IOK) { |
3741 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
3742 | SvIV_set(dstr, SvIVX(sstr)); | |
3743 | } | |
3332b3c1 | 3744 | if (sflags & SVp_NOK) { |
9d6ce603 | 3745 | SvNV_set(dstr, SvNVX(sstr)); |
3332b3c1 JH |
3746 | } |
3747 | } | |
79072805 | 3748 | else { |
f7877b28 | 3749 | if (isGV_with_GP(sstr)) { |
180488f8 NC |
3750 | /* This stringification rule for globs is spread in 3 places. |
3751 | This feels bad. FIXME. */ | |
3752 | const U32 wasfake = sflags & SVf_FAKE; | |
3753 | ||
3754 | /* FAKE globs can get coerced, so need to turn this off | |
3755 | temporarily if it is on. */ | |
3756 | SvFAKE_off(sstr); | |
3757 | gv_efullname3(dstr, (GV *)sstr, "*"); | |
3758 | SvFLAGS(sstr) |= wasfake; | |
3759 | } | |
20408e3c GS |
3760 | else |
3761 | (void)SvOK_off(dstr); | |
a0d0e21e | 3762 | } |
27c9684d AP |
3763 | if (SvTAINTED(sstr)) |
3764 | SvTAINT(dstr); | |
79072805 LW |
3765 | } |
3766 | ||
954c1994 GS |
3767 | /* |
3768 | =for apidoc sv_setsv_mg | |
3769 | ||
3770 | Like C<sv_setsv>, but also handles 'set' magic. | |
3771 | ||
3772 | =cut | |
3773 | */ | |
3774 | ||
79072805 | 3775 | void |
864dbfa3 | 3776 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
3777 | { |
3778 | sv_setsv(dstr,sstr); | |
3779 | SvSETMAGIC(dstr); | |
3780 | } | |
3781 | ||
f8c7b90f | 3782 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
3783 | SV * |
3784 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
3785 | { | |
3786 | STRLEN cur = SvCUR(sstr); | |
3787 | STRLEN len = SvLEN(sstr); | |
3788 | register char *new_pv; | |
3789 | ||
3790 | if (DEBUG_C_TEST) { | |
3791 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
6c9570dc | 3792 | (void*)sstr, (void*)dstr); |
ed252734 NC |
3793 | sv_dump(sstr); |
3794 | if (dstr) | |
3795 | sv_dump(dstr); | |
3796 | } | |
3797 | ||
3798 | if (dstr) { | |
3799 | if (SvTHINKFIRST(dstr)) | |
3800 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
3f7c398e SP |
3801 | else if (SvPVX_const(dstr)) |
3802 | Safefree(SvPVX_const(dstr)); | |
ed252734 NC |
3803 | } |
3804 | else | |
3805 | new_SV(dstr); | |
862a34c6 | 3806 | SvUPGRADE(dstr, SVt_PVIV); |
ed252734 NC |
3807 | |
3808 | assert (SvPOK(sstr)); | |
3809 | assert (SvPOKp(sstr)); | |
3810 | assert (!SvIOK(sstr)); | |
3811 | assert (!SvIOKp(sstr)); | |
3812 | assert (!SvNOK(sstr)); | |
3813 | assert (!SvNOKp(sstr)); | |
3814 | ||
3815 | if (SvIsCOW(sstr)) { | |
3816 | ||
3817 | if (SvLEN(sstr) == 0) { | |
3818 | /* source is a COW shared hash key. */ | |
ed252734 NC |
3819 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
3820 | "Fast copy on write: Sharing hash\n")); | |
d1db91c6 | 3821 | new_pv = HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)))); |
ed252734 NC |
3822 | goto common_exit; |
3823 | } | |
3824 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
3825 | } else { | |
3826 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
862a34c6 | 3827 | SvUPGRADE(sstr, SVt_PVIV); |
ed252734 NC |
3828 | SvREADONLY_on(sstr); |
3829 | SvFAKE_on(sstr); | |
3830 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
3831 | "Fast copy on write: Converting sstr to COW\n")); | |
3832 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
3833 | } | |
3834 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 3835 | new_pv = SvPVX_mutable(sstr); |
ed252734 NC |
3836 | |
3837 | common_exit: | |
3838 | SvPV_set(dstr, new_pv); | |
3839 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
3840 | if (SvUTF8(sstr)) | |
3841 | SvUTF8_on(dstr); | |
87a1ef3d SP |
3842 | SvLEN_set(dstr, len); |
3843 | SvCUR_set(dstr, cur); | |
ed252734 NC |
3844 | if (DEBUG_C_TEST) { |
3845 | sv_dump(dstr); | |
3846 | } | |
3847 | return dstr; | |
3848 | } | |
3849 | #endif | |
3850 | ||
954c1994 GS |
3851 | /* |
3852 | =for apidoc sv_setpvn | |
3853 | ||
3854 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
3855 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
3856 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
3857 | |
3858 | =cut | |
3859 | */ | |
3860 | ||
ef50df4b | 3861 | void |
864dbfa3 | 3862 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 3863 | { |
97aff369 | 3864 | dVAR; |
c6f8c383 | 3865 | register char *dptr; |
22c522df | 3866 | |
765f542d | 3867 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 3868 | if (!ptr) { |
a0d0e21e | 3869 | (void)SvOK_off(sv); |
463ee0b2 LW |
3870 | return; |
3871 | } | |
22c522df JH |
3872 | else { |
3873 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
a3b680e6 | 3874 | const IV iv = len; |
9c5ffd7c JH |
3875 | if (iv < 0) |
3876 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 3877 | } |
862a34c6 | 3878 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 3879 | |
5902b6a9 | 3880 | dptr = SvGROW(sv, len + 1); |
c6f8c383 GA |
3881 | Move(ptr,dptr,len,char); |
3882 | dptr[len] = '\0'; | |
79072805 | 3883 | SvCUR_set(sv, len); |
1aa99e6b | 3884 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 3885 | SvTAINT(sv); |
79072805 LW |
3886 | } |
3887 | ||
954c1994 GS |
3888 | /* |
3889 | =for apidoc sv_setpvn_mg | |
3890 | ||
3891 | Like C<sv_setpvn>, but also handles 'set' magic. | |
3892 | ||
3893 | =cut | |
3894 | */ | |
3895 | ||
79072805 | 3896 | void |
864dbfa3 | 3897 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
3898 | { |
3899 | sv_setpvn(sv,ptr,len); | |
3900 | SvSETMAGIC(sv); | |
3901 | } | |
3902 | ||
954c1994 GS |
3903 | /* |
3904 | =for apidoc sv_setpv | |
3905 | ||
3906 | Copies a string into an SV. The string must be null-terminated. Does not | |
3907 | handle 'set' magic. See C<sv_setpv_mg>. | |
3908 | ||
3909 | =cut | |
3910 | */ | |
3911 | ||
ef50df4b | 3912 | void |
864dbfa3 | 3913 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 | 3914 | { |
97aff369 | 3915 | dVAR; |
79072805 LW |
3916 | register STRLEN len; |
3917 | ||
765f542d | 3918 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 3919 | if (!ptr) { |
a0d0e21e | 3920 | (void)SvOK_off(sv); |
463ee0b2 LW |
3921 | return; |
3922 | } | |
79072805 | 3923 | len = strlen(ptr); |
862a34c6 | 3924 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 3925 | |
79072805 | 3926 | SvGROW(sv, len + 1); |
463ee0b2 | 3927 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 3928 | SvCUR_set(sv, len); |
1aa99e6b | 3929 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
3930 | SvTAINT(sv); |
3931 | } | |
3932 | ||
954c1994 GS |
3933 | /* |
3934 | =for apidoc sv_setpv_mg | |
3935 | ||
3936 | Like C<sv_setpv>, but also handles 'set' magic. | |
3937 | ||
3938 | =cut | |
3939 | */ | |
3940 | ||
463ee0b2 | 3941 | void |
864dbfa3 | 3942 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
3943 | { |
3944 | sv_setpv(sv,ptr); | |
3945 | SvSETMAGIC(sv); | |
3946 | } | |
3947 | ||
954c1994 | 3948 | /* |
47518d95 | 3949 | =for apidoc sv_usepvn_flags |
954c1994 | 3950 | |
794a0d33 JH |
3951 | Tells an SV to use C<ptr> to find its string value. Normally the |
3952 | string is stored inside the SV but sv_usepvn allows the SV to use an | |
3953 | outside string. The C<ptr> should point to memory that was allocated | |
c1c21316 NC |
3954 | by C<malloc>. The string length, C<len>, must be supplied. By default |
3955 | this function will realloc (i.e. move) the memory pointed to by C<ptr>, | |
794a0d33 JH |
3956 | so that pointer should not be freed or used by the programmer after |
3957 | giving it to sv_usepvn, and neither should any pointers from "behind" | |
c1c21316 NC |
3958 | that pointer (e.g. ptr + 1) be used. |
3959 | ||
3960 | If C<flags> & SV_SMAGIC is true, will call SvSETMAGIC. If C<flags> & | |
3961 | SV_HAS_TRAILING_NUL is true, then C<ptr[len]> must be NUL, and the realloc | |
cbf82dd0 | 3962 | will be skipped. (i.e. the buffer is actually at least 1 byte longer than |
c1c21316 | 3963 | C<len>, and already meets the requirements for storing in C<SvPVX>) |
954c1994 GS |
3964 | |
3965 | =cut | |
3966 | */ | |
3967 | ||
ef50df4b | 3968 | void |
47518d95 | 3969 | Perl_sv_usepvn_flags(pTHX_ SV *sv, char *ptr, STRLEN len, U32 flags) |
463ee0b2 | 3970 | { |
97aff369 | 3971 | dVAR; |
1936d2a7 | 3972 | STRLEN allocate; |
765f542d | 3973 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
862a34c6 | 3974 | SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 3975 | if (!ptr) { |
a0d0e21e | 3976 | (void)SvOK_off(sv); |
47518d95 NC |
3977 | if (flags & SV_SMAGIC) |
3978 | SvSETMAGIC(sv); | |
463ee0b2 LW |
3979 | return; |
3980 | } | |
3f7c398e | 3981 | if (SvPVX_const(sv)) |
8bd4d4c5 | 3982 | SvPV_free(sv); |
1936d2a7 | 3983 | |
0b7042f9 | 3984 | #ifdef DEBUGGING |
2e90b4cd NC |
3985 | if (flags & SV_HAS_TRAILING_NUL) |
3986 | assert(ptr[len] == '\0'); | |
0b7042f9 | 3987 | #endif |
2e90b4cd | 3988 | |
c1c21316 | 3989 | allocate = (flags & SV_HAS_TRAILING_NUL) |
8f01dc65 | 3990 | ? len + 1: PERL_STRLEN_ROUNDUP(len + 1); |
cbf82dd0 NC |
3991 | if (flags & SV_HAS_TRAILING_NUL) { |
3992 | /* It's long enough - do nothing. | |
3993 | Specfically Perl_newCONSTSUB is relying on this. */ | |
3994 | } else { | |
69d25b4f | 3995 | #ifdef DEBUGGING |
69d25b4f | 3996 | /* Force a move to shake out bugs in callers. */ |
10edeb5d | 3997 | char *new_ptr = (char*)safemalloc(allocate); |
69d25b4f NC |
3998 | Copy(ptr, new_ptr, len, char); |
3999 | PoisonFree(ptr,len,char); | |
4000 | Safefree(ptr); | |
4001 | ptr = new_ptr; | |
69d25b4f | 4002 | #else |
10edeb5d | 4003 | ptr = (char*) saferealloc (ptr, allocate); |
69d25b4f | 4004 | #endif |
cbf82dd0 | 4005 | } |
f880fe2f | 4006 | SvPV_set(sv, ptr); |
463ee0b2 | 4007 | SvCUR_set(sv, len); |
1936d2a7 | 4008 | SvLEN_set(sv, allocate); |
c1c21316 | 4009 | if (!(flags & SV_HAS_TRAILING_NUL)) { |
97a130b8 | 4010 | ptr[len] = '\0'; |
c1c21316 | 4011 | } |
1aa99e6b | 4012 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4013 | SvTAINT(sv); |
47518d95 NC |
4014 | if (flags & SV_SMAGIC) |
4015 | SvSETMAGIC(sv); | |
ef50df4b GS |
4016 | } |
4017 | ||
f8c7b90f | 4018 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4019 | /* Need to do this *after* making the SV normal, as we need the buffer |
4020 | pointer to remain valid until after we've copied it. If we let go too early, | |
4021 | another thread could invalidate it by unsharing last of the same hash key | |
4022 | (which it can do by means other than releasing copy-on-write Svs) | |
4023 | or by changing the other copy-on-write SVs in the loop. */ | |
4024 | STATIC void | |
5302ffd4 | 4025 | S_sv_release_COW(pTHX_ register SV *sv, const char *pvx, SV *after) |
765f542d | 4026 | { |
5302ffd4 | 4027 | { /* this SV was SvIsCOW_normal(sv) */ |
765f542d | 4028 | /* we need to find the SV pointing to us. */ |
cf5629ad | 4029 | SV *current = SV_COW_NEXT_SV(after); |
7a5fa8a2 | 4030 | |
765f542d NC |
4031 | if (current == sv) { |
4032 | /* The SV we point to points back to us (there were only two of us | |
4033 | in the loop.) | |
4034 | Hence other SV is no longer copy on write either. */ | |
4035 | SvFAKE_off(after); | |
4036 | SvREADONLY_off(after); | |
4037 | } else { | |
4038 | /* We need to follow the pointers around the loop. */ | |
4039 | SV *next; | |
4040 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4041 | assert (next); | |
4042 | current = next; | |
4043 | /* don't loop forever if the structure is bust, and we have | |
4044 | a pointer into a closed loop. */ | |
4045 | assert (current != after); | |
3f7c398e | 4046 | assert (SvPVX_const(current) == pvx); |
765f542d NC |
4047 | } |
4048 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4049 | SV_COW_NEXT_SV_SET(current, after); |
765f542d | 4050 | } |
765f542d NC |
4051 | } |
4052 | } | |
765f542d | 4053 | #endif |
645c22ef DM |
4054 | /* |
4055 | =for apidoc sv_force_normal_flags | |
4056 | ||
4057 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4058 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4059 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4060 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4061 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4062 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4063 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4064 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4065 | with flags set to 0. | |
645c22ef DM |
4066 | |
4067 | =cut | |
4068 | */ | |
4069 | ||
6fc92669 | 4070 | void |
840a7b70 | 4071 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4072 | { |
97aff369 | 4073 | dVAR; |
f8c7b90f | 4074 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4075 | if (SvREADONLY(sv)) { |
4076 | /* At this point I believe I should acquire a global SV mutex. */ | |
4077 | if (SvFAKE(sv)) { | |
b64e5050 | 4078 | const char * const pvx = SvPVX_const(sv); |
a28509cc AL |
4079 | const STRLEN len = SvLEN(sv); |
4080 | const STRLEN cur = SvCUR(sv); | |
5302ffd4 NC |
4081 | /* next COW sv in the loop. If len is 0 then this is a shared-hash |
4082 | key scalar, so we mustn't attempt to call SV_COW_NEXT_SV(), as | |
4083 | we'll fail an assertion. */ | |
4084 | SV * const next = len ? SV_COW_NEXT_SV(sv) : 0; | |
4085 | ||
46187eeb NC |
4086 | if (DEBUG_C_TEST) { |
4087 | PerlIO_printf(Perl_debug_log, | |
4088 | "Copy on write: Force normal %ld\n", | |
4089 | (long) flags); | |
e419cbc5 | 4090 | sv_dump(sv); |
46187eeb | 4091 | } |
765f542d NC |
4092 | SvFAKE_off(sv); |
4093 | SvREADONLY_off(sv); | |
9f653bb5 | 4094 | /* This SV doesn't own the buffer, so need to Newx() a new one: */ |
6136c704 | 4095 | SvPV_set(sv, NULL); |
87a1ef3d | 4096 | SvLEN_set(sv, 0); |
765f542d NC |
4097 | if (flags & SV_COW_DROP_PV) { |
4098 | /* OK, so we don't need to copy our buffer. */ | |
4099 | SvPOK_off(sv); | |
4100 | } else { | |
4101 | SvGROW(sv, cur + 1); | |
4102 | Move(pvx,SvPVX(sv),cur,char); | |
87a1ef3d | 4103 | SvCUR_set(sv, cur); |
765f542d NC |
4104 | *SvEND(sv) = '\0'; |
4105 | } | |
5302ffd4 NC |
4106 | if (len) { |
4107 | sv_release_COW(sv, pvx, next); | |
4108 | } else { | |
4109 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); | |
4110 | } | |
46187eeb | 4111 | if (DEBUG_C_TEST) { |
e419cbc5 | 4112 | sv_dump(sv); |
46187eeb | 4113 | } |
765f542d | 4114 | } |
923e4eb5 | 4115 | else if (IN_PERL_RUNTIME) |
765f542d NC |
4116 | Perl_croak(aTHX_ PL_no_modify); |
4117 | /* At this point I believe that I can drop the global SV mutex. */ | |
4118 | } | |
4119 | #else | |
2213622d | 4120 | if (SvREADONLY(sv)) { |
1c846c1f | 4121 | if (SvFAKE(sv)) { |
b64e5050 | 4122 | const char * const pvx = SvPVX_const(sv); |
66a1b24b | 4123 | const STRLEN len = SvCUR(sv); |
10bcdfd6 NC |
4124 | SvFAKE_off(sv); |
4125 | SvREADONLY_off(sv); | |
bd61b366 | 4126 | SvPV_set(sv, NULL); |
66a1b24b | 4127 | SvLEN_set(sv, 0); |
1c846c1f | 4128 | SvGROW(sv, len + 1); |
706aa1c9 | 4129 | Move(pvx,SvPVX(sv),len,char); |
1c846c1f | 4130 | *SvEND(sv) = '\0'; |
bdd68bc3 | 4131 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); |
1c846c1f | 4132 | } |
923e4eb5 | 4133 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 4134 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 4135 | } |
765f542d | 4136 | #endif |
2213622d | 4137 | if (SvROK(sv)) |
840a7b70 | 4138 | sv_unref_flags(sv, flags); |
6fc92669 GS |
4139 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
4140 | sv_unglob(sv); | |
0f15f207 | 4141 | } |
1c846c1f | 4142 | |
645c22ef | 4143 | /* |
954c1994 GS |
4144 | =for apidoc sv_chop |
4145 | ||
1c846c1f | 4146 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
4147 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
4148 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 4149 | string. Uses the "OOK hack". |
3f7c398e | 4150 | Beware: after this function returns, C<ptr> and SvPVX_const(sv) may no longer |
31869a79 | 4151 | refer to the same chunk of data. |
954c1994 GS |
4152 | |
4153 | =cut | |
4154 | */ | |
4155 | ||
79072805 | 4156 | void |
f54cb97a | 4157 | Perl_sv_chop(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4158 | { |
4159 | register STRLEN delta; | |
a0d0e21e | 4160 | if (!ptr || !SvPOKp(sv)) |
79072805 | 4161 | return; |
3f7c398e | 4162 | delta = ptr - SvPVX_const(sv); |
2213622d | 4163 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
4164 | if (SvTYPE(sv) < SVt_PVIV) |
4165 | sv_upgrade(sv,SVt_PVIV); | |
4166 | ||
4167 | if (!SvOOK(sv)) { | |
50483b2c | 4168 | if (!SvLEN(sv)) { /* make copy of shared string */ |
3f7c398e | 4169 | const char *pvx = SvPVX_const(sv); |
a28509cc | 4170 | const STRLEN len = SvCUR(sv); |
50483b2c | 4171 | SvGROW(sv, len + 1); |
706aa1c9 | 4172 | Move(pvx,SvPVX(sv),len,char); |
50483b2c JD |
4173 | *SvEND(sv) = '\0'; |
4174 | } | |
45977657 | 4175 | SvIV_set(sv, 0); |
a4bfb290 AB |
4176 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
4177 | and we do that anyway inside the SvNIOK_off | |
4178 | */ | |
7a5fa8a2 | 4179 | SvFLAGS(sv) |= SVf_OOK; |
79072805 | 4180 | } |
a4bfb290 | 4181 | SvNIOK_off(sv); |
b162af07 SP |
4182 | SvLEN_set(sv, SvLEN(sv) - delta); |
4183 | SvCUR_set(sv, SvCUR(sv) - delta); | |
f880fe2f | 4184 | SvPV_set(sv, SvPVX(sv) + delta); |
45977657 | 4185 | SvIV_set(sv, SvIVX(sv) + delta); |
79072805 LW |
4186 | } |
4187 | ||
954c1994 GS |
4188 | /* |
4189 | =for apidoc sv_catpvn | |
4190 | ||
4191 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
4192 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
4193 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 4194 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 4195 | |
8d6d96c1 HS |
4196 | =for apidoc sv_catpvn_flags |
4197 | ||
4198 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
4199 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
4200 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
4201 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
4202 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
4203 | in terms of this function. | |
4204 | ||
4205 | =cut | |
4206 | */ | |
4207 | ||
4208 | void | |
4209 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
4210 | { | |
97aff369 | 4211 | dVAR; |
8d6d96c1 | 4212 | STRLEN dlen; |
fabdb6c0 | 4213 | const char * const dstr = SvPV_force_flags(dsv, dlen, flags); |
8d6d96c1 | 4214 | |
8d6d96c1 HS |
4215 | SvGROW(dsv, dlen + slen + 1); |
4216 | if (sstr == dstr) | |
3f7c398e | 4217 | sstr = SvPVX_const(dsv); |
8d6d96c1 | 4218 | Move(sstr, SvPVX(dsv) + dlen, slen, char); |
b162af07 | 4219 | SvCUR_set(dsv, SvCUR(dsv) + slen); |
8d6d96c1 HS |
4220 | *SvEND(dsv) = '\0'; |
4221 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
4222 | SvTAINT(dsv); | |
bddd5118 NC |
4223 | if (flags & SV_SMAGIC) |
4224 | SvSETMAGIC(dsv); | |
79072805 LW |
4225 | } |
4226 | ||
954c1994 | 4227 | /* |
954c1994 GS |
4228 | =for apidoc sv_catsv |
4229 | ||
13e8c8e3 JH |
4230 | Concatenates the string from SV C<ssv> onto the end of the string in |
4231 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
4232 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 4233 | |
8d6d96c1 HS |
4234 | =for apidoc sv_catsv_flags |
4235 | ||
4236 | Concatenates the string from SV C<ssv> onto the end of the string in | |
4237 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
4238 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
4239 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
4240 | ||
4241 | =cut */ | |
4242 | ||
ef50df4b | 4243 | void |
8d6d96c1 | 4244 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 4245 | { |
97aff369 | 4246 | dVAR; |
bddd5118 | 4247 | if (ssv) { |
00b6aa41 AL |
4248 | STRLEN slen; |
4249 | const char *spv = SvPV_const(ssv, slen); | |
4250 | if (spv) { | |
bddd5118 NC |
4251 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
4252 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
4253 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously | |
4254 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4255 | dsv->sv_flags doesn't have that bit set. | |
4fd84b44 | 4256 | Andy Dougherty 12 Oct 2001 |
bddd5118 NC |
4257 | */ |
4258 | const I32 sutf8 = DO_UTF8(ssv); | |
4259 | I32 dutf8; | |
13e8c8e3 | 4260 | |
bddd5118 NC |
4261 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
4262 | mg_get(dsv); | |
4263 | dutf8 = DO_UTF8(dsv); | |
8d6d96c1 | 4264 | |
bddd5118 NC |
4265 | if (dutf8 != sutf8) { |
4266 | if (dutf8) { | |
4267 | /* Not modifying source SV, so taking a temporary copy. */ | |
00b6aa41 | 4268 | SV* const csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 4269 | |
bddd5118 NC |
4270 | sv_utf8_upgrade(csv); |
4271 | spv = SvPV_const(csv, slen); | |
4272 | } | |
4273 | else | |
4274 | sv_utf8_upgrade_nomg(dsv); | |
13e8c8e3 | 4275 | } |
bddd5118 | 4276 | sv_catpvn_nomg(dsv, spv, slen); |
e84ff256 | 4277 | } |
560a288e | 4278 | } |
bddd5118 NC |
4279 | if (flags & SV_SMAGIC) |
4280 | SvSETMAGIC(dsv); | |
79072805 LW |
4281 | } |
4282 | ||
954c1994 | 4283 | /* |
954c1994 GS |
4284 | =for apidoc sv_catpv |
4285 | ||
4286 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
4287 | If the SV has the UTF-8 status set, then the bytes appended should be |
4288 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 4289 | |
d5ce4a7c | 4290 | =cut */ |
954c1994 | 4291 | |
ef50df4b | 4292 | void |
0c981600 | 4293 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 | 4294 | { |
97aff369 | 4295 | dVAR; |
79072805 | 4296 | register STRLEN len; |
463ee0b2 | 4297 | STRLEN tlen; |
748a9306 | 4298 | char *junk; |
79072805 | 4299 | |
0c981600 | 4300 | if (!ptr) |
79072805 | 4301 | return; |
748a9306 | 4302 | junk = SvPV_force(sv, tlen); |
0c981600 | 4303 | len = strlen(ptr); |
463ee0b2 | 4304 | SvGROW(sv, tlen + len + 1); |
0c981600 | 4305 | if (ptr == junk) |
3f7c398e | 4306 | ptr = SvPVX_const(sv); |
0c981600 | 4307 | Move(ptr,SvPVX(sv)+tlen,len+1,char); |
b162af07 | 4308 | SvCUR_set(sv, SvCUR(sv) + len); |
d41ff1b8 | 4309 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4310 | SvTAINT(sv); |
79072805 LW |
4311 | } |
4312 | ||
954c1994 GS |
4313 | /* |
4314 | =for apidoc sv_catpv_mg | |
4315 | ||
4316 | Like C<sv_catpv>, but also handles 'set' magic. | |
4317 | ||
4318 | =cut | |
4319 | */ | |
4320 | ||
ef50df4b | 4321 | void |
0c981600 | 4322 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 4323 | { |
0c981600 | 4324 | sv_catpv(sv,ptr); |
ef50df4b GS |
4325 | SvSETMAGIC(sv); |
4326 | } | |
4327 | ||
645c22ef DM |
4328 | /* |
4329 | =for apidoc newSV | |
4330 | ||
561b68a9 SH |
4331 | Creates a new SV. A non-zero C<len> parameter indicates the number of |
4332 | bytes of preallocated string space the SV should have. An extra byte for a | |
4333 | trailing NUL is also reserved. (SvPOK is not set for the SV even if string | |
4334 | space is allocated.) The reference count for the new SV is set to 1. | |
4335 | ||
4336 | In 5.9.3, newSV() replaces the older NEWSV() API, and drops the first | |
4337 | parameter, I<x>, a debug aid which allowed callers to identify themselves. | |
4338 | This aid has been superseded by a new build option, PERL_MEM_LOG (see | |
4339 | L<perlhack/PERL_MEM_LOG>). The older API is still there for use in XS | |
4340 | modules supporting older perls. | |
645c22ef DM |
4341 | |
4342 | =cut | |
4343 | */ | |
4344 | ||
79072805 | 4345 | SV * |
864dbfa3 | 4346 | Perl_newSV(pTHX_ STRLEN len) |
79072805 | 4347 | { |
97aff369 | 4348 | dVAR; |
79072805 | 4349 | register SV *sv; |
1c846c1f | 4350 | |
4561caa4 | 4351 | new_SV(sv); |
79072805 LW |
4352 | if (len) { |
4353 | sv_upgrade(sv, SVt_PV); | |
4354 | SvGROW(sv, len + 1); | |
4355 | } | |
4356 | return sv; | |
4357 | } | |
954c1994 | 4358 | /* |
92110913 | 4359 | =for apidoc sv_magicext |
954c1994 | 4360 | |
68795e93 | 4361 | Adds magic to an SV, upgrading it if necessary. Applies the |
2d8d5d5a | 4362 | supplied vtable and returns a pointer to the magic added. |
92110913 | 4363 | |
2d8d5d5a SH |
4364 | Note that C<sv_magicext> will allow things that C<sv_magic> will not. |
4365 | In particular, you can add magic to SvREADONLY SVs, and add more than | |
4366 | one instance of the same 'how'. | |
645c22ef | 4367 | |
2d8d5d5a SH |
4368 | If C<namlen> is greater than zero then a C<savepvn> I<copy> of C<name> is |
4369 | stored, if C<namlen> is zero then C<name> is stored as-is and - as another | |
4370 | special case - if C<(name && namlen == HEf_SVKEY)> then C<name> is assumed | |
4371 | to contain an C<SV*> and is stored as-is with its REFCNT incremented. | |
92110913 | 4372 | |
2d8d5d5a | 4373 | (This is now used as a subroutine by C<sv_magic>.) |
954c1994 GS |
4374 | |
4375 | =cut | |
4376 | */ | |
92110913 | 4377 | MAGIC * |
53d44271 | 4378 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, const MGVTBL *vtable, |
92110913 | 4379 | const char* name, I32 namlen) |
79072805 | 4380 | { |
97aff369 | 4381 | dVAR; |
79072805 | 4382 | MAGIC* mg; |
68795e93 | 4383 | |
7a7f3e45 | 4384 | SvUPGRADE(sv, SVt_PVMG); |
a02a5408 | 4385 | Newxz(mg, 1, MAGIC); |
79072805 | 4386 | mg->mg_moremagic = SvMAGIC(sv); |
b162af07 | 4387 | SvMAGIC_set(sv, mg); |
75f9d97a | 4388 | |
05f95b08 SB |
4389 | /* Sometimes a magic contains a reference loop, where the sv and |
4390 | object refer to each other. To prevent a reference loop that | |
4391 | would prevent such objects being freed, we look for such loops | |
4392 | and if we find one we avoid incrementing the object refcount. | |
87f0b213 JH |
4393 | |
4394 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 4395 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
4396 | |
4397 | */ | |
14befaf4 DM |
4398 | if (!obj || obj == sv || |
4399 | how == PERL_MAGIC_arylen || | |
4400 | how == PERL_MAGIC_qr || | |
8d2f4536 | 4401 | how == PERL_MAGIC_symtab || |
75f9d97a JH |
4402 | (SvTYPE(obj) == SVt_PVGV && |
4403 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
4404 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 4405 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 4406 | { |
8990e307 | 4407 | mg->mg_obj = obj; |
75f9d97a | 4408 | } |
85e6fe83 | 4409 | else { |
b37c2d43 | 4410 | mg->mg_obj = SvREFCNT_inc_simple(obj); |
85e6fe83 LW |
4411 | mg->mg_flags |= MGf_REFCOUNTED; |
4412 | } | |
b5ccf5f2 YST |
4413 | |
4414 | /* Normal self-ties simply pass a null object, and instead of | |
4415 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
4416 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
4417 | with an RV obj pointing to the glob containing the PVIO. In | |
4418 | this case, to avoid a reference loop, we need to weaken the | |
4419 | reference. | |
4420 | */ | |
4421 | ||
4422 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
4423 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
4424 | { | |
4425 | sv_rvweaken(obj); | |
4426 | } | |
4427 | ||
79072805 | 4428 | mg->mg_type = how; |
565764a8 | 4429 | mg->mg_len = namlen; |
9cbac4c7 | 4430 | if (name) { |
92110913 | 4431 | if (namlen > 0) |
1edc1566 | 4432 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 4433 | else if (namlen == HEf_SVKEY) |
b37c2d43 | 4434 | mg->mg_ptr = (char*)SvREFCNT_inc_simple_NN((SV*)name); |
68795e93 | 4435 | else |
92110913 | 4436 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 4437 | } |
53d44271 | 4438 | mg->mg_virtual = (MGVTBL *) vtable; |
68795e93 | 4439 | |
92110913 NIS |
4440 | mg_magical(sv); |
4441 | if (SvGMAGICAL(sv)) | |
4442 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
4443 | return mg; | |
4444 | } | |
4445 | ||
4446 | /* | |
4447 | =for apidoc sv_magic | |
1c846c1f | 4448 | |
92110913 NIS |
4449 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
4450 | then adds a new magic item of type C<how> to the head of the magic list. | |
4451 | ||
2d8d5d5a SH |
4452 | See C<sv_magicext> (which C<sv_magic> now calls) for a description of the |
4453 | handling of the C<name> and C<namlen> arguments. | |
4454 | ||
4509d3fb SB |
4455 | You need to use C<sv_magicext> to add magic to SvREADONLY SVs and also |
4456 | to add more than one instance of the same 'how'. | |
4457 | ||
92110913 NIS |
4458 | =cut |
4459 | */ | |
4460 | ||
4461 | void | |
4462 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 4463 | { |
97aff369 | 4464 | dVAR; |
53d44271 | 4465 | const MGVTBL *vtable; |
92110913 | 4466 | MAGIC* mg; |
92110913 | 4467 | |
f8c7b90f | 4468 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4469 | if (SvIsCOW(sv)) |
4470 | sv_force_normal_flags(sv, 0); | |
4471 | #endif | |
92110913 | 4472 | if (SvREADONLY(sv)) { |
d8084ca5 DM |
4473 | if ( |
4474 | /* its okay to attach magic to shared strings; the subsequent | |
4475 | * upgrade to PVMG will unshare the string */ | |
4476 | !(SvFAKE(sv) && SvTYPE(sv) < SVt_PVMG) | |
4477 | ||
4478 | && IN_PERL_RUNTIME | |
92110913 NIS |
4479 | && how != PERL_MAGIC_regex_global |
4480 | && how != PERL_MAGIC_bm | |
4481 | && how != PERL_MAGIC_fm | |
4482 | && how != PERL_MAGIC_sv | |
e6469971 | 4483 | && how != PERL_MAGIC_backref |
92110913 NIS |
4484 | ) |
4485 | { | |
4486 | Perl_croak(aTHX_ PL_no_modify); | |
4487 | } | |
4488 | } | |
4489 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
4490 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
4491 | /* sv_magic() refuses to add a magic of the same 'how' as an |
4492 | existing one | |
92110913 | 4493 | */ |
2a509ed3 | 4494 | if (how == PERL_MAGIC_taint) { |
92110913 | 4495 | mg->mg_len |= 1; |
2a509ed3 NC |
4496 | /* Any scalar which already had taint magic on which someone |
4497 | (erroneously?) did SvIOK_on() or similar will now be | |
4498 | incorrectly sporting public "OK" flags. */ | |
4499 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
4500 | } | |
92110913 NIS |
4501 | return; |
4502 | } | |
4503 | } | |
68795e93 | 4504 | |
79072805 | 4505 | switch (how) { |
14befaf4 | 4506 | case PERL_MAGIC_sv: |
92110913 | 4507 | vtable = &PL_vtbl_sv; |
79072805 | 4508 | break; |
14befaf4 | 4509 | case PERL_MAGIC_overload: |
92110913 | 4510 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 4511 | break; |
14befaf4 | 4512 | case PERL_MAGIC_overload_elem: |
92110913 | 4513 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 4514 | break; |
14befaf4 | 4515 | case PERL_MAGIC_overload_table: |
92110913 | 4516 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 4517 | break; |
14befaf4 | 4518 | case PERL_MAGIC_bm: |
92110913 | 4519 | vtable = &PL_vtbl_bm; |
79072805 | 4520 | break; |
14befaf4 | 4521 | case PERL_MAGIC_regdata: |
92110913 | 4522 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 4523 | break; |
14befaf4 | 4524 | case PERL_MAGIC_regdatum: |
92110913 | 4525 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 4526 | break; |
14befaf4 | 4527 | case PERL_MAGIC_env: |
92110913 | 4528 | vtable = &PL_vtbl_env; |
79072805 | 4529 | break; |
14befaf4 | 4530 | case PERL_MAGIC_fm: |
92110913 | 4531 | vtable = &PL_vtbl_fm; |
55497cff | 4532 | break; |
14befaf4 | 4533 | case PERL_MAGIC_envelem: |
92110913 | 4534 | vtable = &PL_vtbl_envelem; |
79072805 | 4535 | break; |
14befaf4 | 4536 | case PERL_MAGIC_regex_global: |
92110913 | 4537 | vtable = &PL_vtbl_mglob; |
93a17b20 | 4538 | break; |
14befaf4 | 4539 | case PERL_MAGIC_isa: |
92110913 | 4540 | vtable = &PL_vtbl_isa; |
463ee0b2 | 4541 | break; |
14befaf4 | 4542 | case PERL_MAGIC_isaelem: |
92110913 | 4543 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 4544 | break; |
14befaf4 | 4545 | case PERL_MAGIC_nkeys: |
92110913 | 4546 | vtable = &PL_vtbl_nkeys; |
16660edb | 4547 | break; |
14befaf4 | 4548 | case PERL_MAGIC_dbfile: |
aec46f14 | 4549 | vtable = NULL; |
93a17b20 | 4550 | break; |
14befaf4 | 4551 | case PERL_MAGIC_dbline: |
92110913 | 4552 | vtable = &PL_vtbl_dbline; |
79072805 | 4553 | break; |
36477c24 | 4554 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 4555 | case PERL_MAGIC_collxfrm: |
92110913 | 4556 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 4557 | break; |
36477c24 | 4558 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 4559 | case PERL_MAGIC_tied: |
92110913 | 4560 | vtable = &PL_vtbl_pack; |
463ee0b2 | 4561 | break; |
14befaf4 DM |
4562 | case PERL_MAGIC_tiedelem: |
4563 | case PERL_MAGIC_tiedscalar: | |
92110913 | 4564 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 4565 | break; |
14befaf4 | 4566 | case PERL_MAGIC_qr: |
92110913 | 4567 | vtable = &PL_vtbl_regexp; |
c277df42 | 4568 | break; |
b3ca2e83 NC |
4569 | case PERL_MAGIC_hints: |
4570 | /* As this vtable is all NULL, we can reuse it. */ | |
14befaf4 | 4571 | case PERL_MAGIC_sig: |
92110913 | 4572 | vtable = &PL_vtbl_sig; |
79072805 | 4573 | break; |
14befaf4 | 4574 | case PERL_MAGIC_sigelem: |
92110913 | 4575 | vtable = &PL_vtbl_sigelem; |
79072805 | 4576 | break; |
14befaf4 | 4577 | case PERL_MAGIC_taint: |
92110913 | 4578 | vtable = &PL_vtbl_taint; |
463ee0b2 | 4579 | break; |
14befaf4 | 4580 | case PERL_MAGIC_uvar: |
92110913 | 4581 | vtable = &PL_vtbl_uvar; |
79072805 | 4582 | break; |
14befaf4 | 4583 | case PERL_MAGIC_vec: |
92110913 | 4584 | vtable = &PL_vtbl_vec; |
79072805 | 4585 | break; |
a3874608 | 4586 | case PERL_MAGIC_arylen_p: |
bfcb3514 | 4587 | case PERL_MAGIC_rhash: |
8d2f4536 | 4588 | case PERL_MAGIC_symtab: |
ece467f9 | 4589 | case PERL_MAGIC_vstring: |
aec46f14 | 4590 | vtable = NULL; |
ece467f9 | 4591 | break; |
7e8c5dac HS |
4592 | case PERL_MAGIC_utf8: |
4593 | vtable = &PL_vtbl_utf8; | |
4594 | break; | |
14befaf4 | 4595 | case PERL_MAGIC_substr: |
92110913 | 4596 | vtable = &PL_vtbl_substr; |
79072805 | 4597 | break; |
14befaf4 | 4598 | case PERL_MAGIC_defelem: |
92110913 | 4599 | vtable = &PL_vtbl_defelem; |
5f05dabc | 4600 | break; |
14befaf4 | 4601 | case PERL_MAGIC_arylen: |
92110913 | 4602 | vtable = &PL_vtbl_arylen; |
79072805 | 4603 | break; |
14befaf4 | 4604 | case PERL_MAGIC_pos: |
92110913 | 4605 | vtable = &PL_vtbl_pos; |
a0d0e21e | 4606 | break; |
14befaf4 | 4607 | case PERL_MAGIC_backref: |
92110913 | 4608 | vtable = &PL_vtbl_backref; |
810b8aa5 | 4609 | break; |
b3ca2e83 NC |
4610 | case PERL_MAGIC_hintselem: |
4611 | vtable = &PL_vtbl_hintselem; | |
4612 | break; | |
14befaf4 DM |
4613 | case PERL_MAGIC_ext: |
4614 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
4615 | /* Useful for attaching extension internal data to perl vars. */ |
4616 | /* Note that multiple extensions may clash if magical scalars */ | |
4617 | /* etc holding private data from one are passed to another. */ | |
aec46f14 | 4618 | vtable = NULL; |
a0d0e21e | 4619 | break; |
79072805 | 4620 | default: |
14befaf4 | 4621 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 4622 | } |
68795e93 | 4623 | |
92110913 | 4624 | /* Rest of work is done else where */ |
aec46f14 | 4625 | mg = sv_magicext(sv,obj,how,vtable,name,namlen); |
68795e93 | 4626 | |
92110913 NIS |
4627 | switch (how) { |
4628 | case PERL_MAGIC_taint: | |
4629 | mg->mg_len = 1; | |
4630 | break; | |
4631 | case PERL_MAGIC_ext: | |
4632 | case PERL_MAGIC_dbfile: | |
4633 | SvRMAGICAL_on(sv); | |
4634 | break; | |
4635 | } | |
463ee0b2 LW |
4636 | } |
4637 | ||
c461cf8f JH |
4638 | /* |
4639 | =for apidoc sv_unmagic | |
4640 | ||
645c22ef | 4641 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
4642 | |
4643 | =cut | |
4644 | */ | |
4645 | ||
463ee0b2 | 4646 | int |
864dbfa3 | 4647 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
4648 | { |
4649 | MAGIC* mg; | |
4650 | MAGIC** mgp; | |
91bba347 | 4651 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 | 4652 | return 0; |
064cf529 | 4653 | mgp = &(((XPVMG*) SvANY(sv))->xmg_u.xmg_magic); |
463ee0b2 LW |
4654 | for (mg = *mgp; mg; mg = *mgp) { |
4655 | if (mg->mg_type == type) { | |
e1ec3a88 | 4656 | const MGVTBL* const vtbl = mg->mg_virtual; |
463ee0b2 | 4657 | *mgp = mg->mg_moremagic; |
1d7c1841 | 4658 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 4659 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 4660 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 4661 | if (mg->mg_len > 0) |
1edc1566 | 4662 | Safefree(mg->mg_ptr); |
565764a8 | 4663 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 4664 | SvREFCNT_dec((SV*)mg->mg_ptr); |
d2923cdd | 4665 | else if (mg->mg_type == PERL_MAGIC_utf8) |
7e8c5dac | 4666 | Safefree(mg->mg_ptr); |
9cbac4c7 | 4667 | } |
a0d0e21e LW |
4668 | if (mg->mg_flags & MGf_REFCOUNTED) |
4669 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
4670 | Safefree(mg); |
4671 | } | |
4672 | else | |
4673 | mgp = &mg->mg_moremagic; | |
79072805 | 4674 | } |
91bba347 | 4675 | if (!SvMAGIC(sv)) { |
463ee0b2 | 4676 | SvMAGICAL_off(sv); |
c268c2a6 | 4677 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
86f55936 | 4678 | SvMAGIC_set(sv, NULL); |
463ee0b2 LW |
4679 | } |
4680 | ||
4681 | return 0; | |
79072805 LW |
4682 | } |
4683 | ||
c461cf8f JH |
4684 | /* |
4685 | =for apidoc sv_rvweaken | |
4686 | ||
645c22ef DM |
4687 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
4688 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
4689 | push a back-reference to this RV onto the array of backreferences | |
1e73acc8 AS |
4690 | associated with that magic. If the RV is magical, set magic will be |
4691 | called after the RV is cleared. | |
c461cf8f JH |
4692 | |
4693 | =cut | |
4694 | */ | |
4695 | ||
810b8aa5 | 4696 | SV * |
864dbfa3 | 4697 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
4698 | { |
4699 | SV *tsv; | |
4700 | if (!SvOK(sv)) /* let undefs pass */ | |
4701 | return sv; | |
4702 | if (!SvROK(sv)) | |
cea2e8a9 | 4703 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 4704 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 4705 | if (ckWARN(WARN_MISC)) |
9014280d | 4706 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
4707 | return sv; |
4708 | } | |
4709 | tsv = SvRV(sv); | |
e15faf7d | 4710 | Perl_sv_add_backref(aTHX_ tsv, sv); |
810b8aa5 | 4711 | SvWEAKREF_on(sv); |
1c846c1f | 4712 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
4713 | return sv; |
4714 | } | |
4715 | ||
645c22ef DM |
4716 | /* Give tsv backref magic if it hasn't already got it, then push a |
4717 | * back-reference to sv onto the array associated with the backref magic. | |
4718 | */ | |
4719 | ||
e15faf7d NC |
4720 | void |
4721 | Perl_sv_add_backref(pTHX_ SV *tsv, SV *sv) | |
810b8aa5 | 4722 | { |
97aff369 | 4723 | dVAR; |
810b8aa5 | 4724 | AV *av; |
86f55936 NC |
4725 | |
4726 | if (SvTYPE(tsv) == SVt_PVHV) { | |
4727 | AV **const avp = Perl_hv_backreferences_p(aTHX_ (HV*)tsv); | |
4728 | ||
4729 | av = *avp; | |
4730 | if (!av) { | |
4731 | /* There is no AV in the offical place - try a fixup. */ | |
4732 | MAGIC *const mg = mg_find(tsv, PERL_MAGIC_backref); | |
4733 | ||
4734 | if (mg) { | |
4735 | /* Aha. They've got it stowed in magic. Bring it back. */ | |
4736 | av = (AV*)mg->mg_obj; | |
4737 | /* Stop mg_free decreasing the refernce count. */ | |
4738 | mg->mg_obj = NULL; | |
4739 | /* Stop mg_free even calling the destructor, given that | |
4740 | there's no AV to free up. */ | |
4741 | mg->mg_virtual = 0; | |
4742 | sv_unmagic(tsv, PERL_MAGIC_backref); | |
4743 | } else { | |
4744 | av = newAV(); | |
4745 | AvREAL_off(av); | |
b37c2d43 | 4746 | SvREFCNT_inc_simple_void(av); |
86f55936 NC |
4747 | } |
4748 | *avp = av; | |
4749 | } | |
4750 | } else { | |
4751 | const MAGIC *const mg | |
4752 | = SvMAGICAL(tsv) ? mg_find(tsv, PERL_MAGIC_backref) : NULL; | |
4753 | if (mg) | |
4754 | av = (AV*)mg->mg_obj; | |
4755 | else { | |
4756 | av = newAV(); | |
4757 | AvREAL_off(av); | |
4758 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); | |
4759 | /* av now has a refcnt of 2, which avoids it getting freed | |
4760 | * before us during global cleanup. The extra ref is removed | |
4761 | * by magic_killbackrefs() when tsv is being freed */ | |
4762 | } | |
810b8aa5 | 4763 | } |
d91d49e8 | 4764 | if (AvFILLp(av) >= AvMAX(av)) { |
d91d49e8 MM |
4765 | av_extend(av, AvFILLp(av)+1); |
4766 | } | |
4767 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
4768 | } |
4769 | ||
645c22ef DM |
4770 | /* delete a back-reference to ourselves from the backref magic associated |
4771 | * with the SV we point to. | |
4772 | */ | |
4773 | ||
1c846c1f | 4774 | STATIC void |
e15faf7d | 4775 | S_sv_del_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 | 4776 | { |
97aff369 | 4777 | dVAR; |
86f55936 | 4778 | AV *av = NULL; |
810b8aa5 GS |
4779 | SV **svp; |
4780 | I32 i; | |
86f55936 NC |
4781 | |
4782 | if (SvTYPE(tsv) == SVt_PVHV && SvOOK(tsv)) { | |
4783 | av = *Perl_hv_backreferences_p(aTHX_ (HV*)tsv); | |
5b285ea4 NC |
4784 | /* We mustn't attempt to "fix up" the hash here by moving the |
4785 | backreference array back to the hv_aux structure, as that is stored | |
4786 | in the main HvARRAY(), and hfreentries assumes that no-one | |
4787 | reallocates HvARRAY() while it is running. */ | |
86f55936 NC |
4788 | } |
4789 | if (!av) { | |
4790 | const MAGIC *const mg | |
4791 | = SvMAGICAL(tsv) ? mg_find(tsv, PERL_MAGIC_backref) : NULL; | |
4792 | if (mg) | |
4793 | av = (AV *)mg->mg_obj; | |
4794 | } | |
4795 | if (!av) { | |
e15faf7d NC |
4796 | if (PL_in_clean_all) |
4797 | return; | |
cea2e8a9 | 4798 | Perl_croak(aTHX_ "panic: del_backref"); |
86f55936 NC |
4799 | } |
4800 | ||
4801 | if (SvIS_FREED(av)) | |
4802 | return; | |
4803 | ||
810b8aa5 | 4804 | svp = AvARRAY(av); |
6a76db8b NC |
4805 | /* We shouldn't be in here more than once, but for paranoia reasons lets |
4806 | not assume this. */ | |
4807 | for (i = AvFILLp(av); i >= 0; i--) { | |
4808 | if (svp[i] == sv) { | |
4809 | const SSize_t fill = AvFILLp(av); | |
4810 | if (i != fill) { | |
4811 | /* We weren't the last entry. | |
4812 | An unordered list has this property that you can take the | |
4813 | last element off the end to fill the hole, and it's still | |
4814 | an unordered list :-) | |
4815 | */ | |
4816 | svp[i] = svp[fill]; | |
4817 | } | |
a0714e2c | 4818 | svp[fill] = NULL; |
6a76db8b NC |
4819 | AvFILLp(av) = fill - 1; |
4820 | } | |
4821 | } | |
810b8aa5 GS |
4822 | } |
4823 | ||
86f55936 NC |
4824 | int |
4825 | Perl_sv_kill_backrefs(pTHX_ SV *sv, AV *av) | |
4826 | { | |
4827 | SV **svp = AvARRAY(av); | |
4828 | ||
4829 | PERL_UNUSED_ARG(sv); | |
4830 | ||
4831 | /* Not sure why the av can get freed ahead of its sv, but somehow it does | |
4832 | in ext/B/t/bytecode.t test 15 (involving print <DATA>) */ | |
4833 | if (svp && !SvIS_FREED(av)) { | |
4834 | SV *const *const last = svp + AvFILLp(av); | |
4835 | ||
4836 | while (svp <= last) { | |
4837 | if (*svp) { | |
4838 | SV *const referrer = *svp; | |
4839 | if (SvWEAKREF(referrer)) { | |
4840 | /* XXX Should we check that it hasn't changed? */ | |
4841 | SvRV_set(referrer, 0); | |
4842 | SvOK_off(referrer); | |
4843 | SvWEAKREF_off(referrer); | |
1e73acc8 | 4844 | SvSETMAGIC(referrer); |
86f55936 NC |
4845 | } else if (SvTYPE(referrer) == SVt_PVGV || |
4846 | SvTYPE(referrer) == SVt_PVLV) { | |
4847 | /* You lookin' at me? */ | |
4848 | assert(GvSTASH(referrer)); | |
4849 | assert(GvSTASH(referrer) == (HV*)sv); | |
4850 | GvSTASH(referrer) = 0; | |
4851 | } else { | |
4852 | Perl_croak(aTHX_ | |
4853 | "panic: magic_killbackrefs (flags=%"UVxf")", | |
4854 | (UV)SvFLAGS(referrer)); | |
4855 | } | |
4856 | ||
a0714e2c | 4857 | *svp = NULL; |
86f55936 NC |
4858 | } |
4859 | svp++; | |
4860 | } | |
4861 | } | |
4862 | SvREFCNT_dec(av); /* remove extra count added by sv_add_backref() */ | |
4863 | return 0; | |
4864 | } | |
4865 | ||
954c1994 GS |
4866 | /* |
4867 | =for apidoc sv_insert | |
4868 | ||
4869 | Inserts a string at the specified offset/length within the SV. Similar to | |
4870 | the Perl substr() function. | |
4871 | ||
4872 | =cut | |
4873 | */ | |
4874 | ||
79072805 | 4875 | void |
e1ec3a88 | 4876 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, const char *little, STRLEN littlelen) |
79072805 | 4877 | { |
97aff369 | 4878 | dVAR; |
79072805 LW |
4879 | register char *big; |
4880 | register char *mid; | |
4881 | register char *midend; | |
4882 | register char *bigend; | |
4883 | register I32 i; | |
6ff81951 | 4884 | STRLEN curlen; |
1c846c1f | 4885 | |
79072805 | 4886 | |
8990e307 | 4887 | if (!bigstr) |
cea2e8a9 | 4888 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 4889 | SvPV_force(bigstr, curlen); |
60fa28ff | 4890 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
4891 | if (offset + len > curlen) { |
4892 | SvGROW(bigstr, offset+len+1); | |
93524f2b | 4893 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); |
6ff81951 GS |
4894 | SvCUR_set(bigstr, offset+len); |
4895 | } | |
79072805 | 4896 | |
69b47968 | 4897 | SvTAINT(bigstr); |
79072805 LW |
4898 | i = littlelen - len; |
4899 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 4900 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
4901 | mid = big + offset + len; |
4902 | midend = bigend = big + SvCUR(bigstr); | |
4903 | bigend += i; | |
4904 | *bigend = '\0'; | |
4905 | while (midend > mid) /* shove everything down */ | |
4906 | *--bigend = *--midend; | |
4907 | Move(little,big+offset,littlelen,char); | |
b162af07 | 4908 | SvCUR_set(bigstr, SvCUR(bigstr) + i); |
79072805 LW |
4909 | SvSETMAGIC(bigstr); |
4910 | return; | |
4911 | } | |
4912 | else if (i == 0) { | |
463ee0b2 | 4913 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
4914 | SvSETMAGIC(bigstr); |
4915 | return; | |
4916 | } | |
4917 | ||
463ee0b2 | 4918 | big = SvPVX(bigstr); |
79072805 LW |
4919 | mid = big + offset; |
4920 | midend = mid + len; | |
4921 | bigend = big + SvCUR(bigstr); | |
4922 | ||
4923 | if (midend > bigend) | |
cea2e8a9 | 4924 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
4925 | |
4926 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
4927 | if (littlelen) { | |
4928 | Move(little, mid, littlelen,char); | |
4929 | mid += littlelen; | |
4930 | } | |
4931 | i = bigend - midend; | |
4932 | if (i > 0) { | |
4933 | Move(midend, mid, i,char); | |
4934 | mid += i; | |
4935 | } | |
4936 | *mid = '\0'; | |
4937 | SvCUR_set(bigstr, mid - big); | |
4938 | } | |
155aba94 | 4939 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
4940 | midend -= littlelen; |
4941 | mid = midend; | |
4942 | sv_chop(bigstr,midend-i); | |
4943 | big += i; | |
4944 | while (i--) | |
4945 | *--midend = *--big; | |
4946 | if (littlelen) | |
4947 | Move(little, mid, littlelen,char); | |
4948 | } | |
4949 | else if (littlelen) { | |
4950 | midend -= littlelen; | |
4951 | sv_chop(bigstr,midend); | |
4952 | Move(little,midend,littlelen,char); | |
4953 | } | |
4954 | else { | |
4955 | sv_chop(bigstr,midend); | |
4956 | } | |
4957 | SvSETMAGIC(bigstr); | |
4958 | } | |
4959 | ||
c461cf8f JH |
4960 | /* |
4961 | =for apidoc sv_replace | |
4962 | ||
4963 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
4964 | The target SV physically takes over ownership of the body of the source SV |
4965 | and inherits its flags; however, the target keeps any magic it owns, | |
4966 | and any magic in the source is discarded. | |
ff276b08 | 4967 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 4968 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
4969 | |
4970 | =cut | |
4971 | */ | |
79072805 LW |
4972 | |
4973 | void | |
864dbfa3 | 4974 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 | 4975 | { |
97aff369 | 4976 | dVAR; |
a3b680e6 | 4977 | const U32 refcnt = SvREFCNT(sv); |
765f542d | 4978 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
30e5c352 | 4979 | if (SvREFCNT(nsv) != 1) { |
7437becc | 4980 | Perl_croak(aTHX_ "panic: reference miscount on nsv in sv_replace() (%" |
30e5c352 NC |
4981 | UVuf " != 1)", (UV) SvREFCNT(nsv)); |
4982 | } | |
93a17b20 | 4983 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
4984 | if (SvMAGICAL(nsv)) |
4985 | mg_free(nsv); | |
4986 | else | |
4987 | sv_upgrade(nsv, SVt_PVMG); | |
b162af07 | 4988 | SvMAGIC_set(nsv, SvMAGIC(sv)); |
a0d0e21e | 4989 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 | 4990 | SvMAGICAL_off(sv); |
b162af07 | 4991 | SvMAGIC_set(sv, NULL); |
93a17b20 | 4992 | } |
79072805 LW |
4993 | SvREFCNT(sv) = 0; |
4994 | sv_clear(sv); | |
477f5d66 | 4995 | assert(!SvREFCNT(sv)); |
fd0854ff DM |
4996 | #ifdef DEBUG_LEAKING_SCALARS |
4997 | sv->sv_flags = nsv->sv_flags; | |
4998 | sv->sv_any = nsv->sv_any; | |
4999 | sv->sv_refcnt = nsv->sv_refcnt; | |
f34d0642 | 5000 | sv->sv_u = nsv->sv_u; |
fd0854ff | 5001 | #else |
79072805 | 5002 | StructCopy(nsv,sv,SV); |
fd0854ff | 5003 | #endif |
7b2c381c NC |
5004 | /* Currently could join these into one piece of pointer arithmetic, but |
5005 | it would be unclear. */ | |
5006 | if(SvTYPE(sv) == SVt_IV) | |
5007 | SvANY(sv) | |
339049b0 | 5008 | = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
7b2c381c | 5009 | else if (SvTYPE(sv) == SVt_RV) { |
339049b0 | 5010 | SvANY(sv) = &sv->sv_u.svu_rv; |
7b2c381c NC |
5011 | } |
5012 | ||
fd0854ff | 5013 | |
f8c7b90f | 5014 | #ifdef PERL_OLD_COPY_ON_WRITE |
d3d0e6f1 NC |
5015 | if (SvIsCOW_normal(nsv)) { |
5016 | /* We need to follow the pointers around the loop to make the | |
5017 | previous SV point to sv, rather than nsv. */ | |
5018 | SV *next; | |
5019 | SV *current = nsv; | |
5020 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5021 | assert(next); | |
5022 | current = next; | |
3f7c398e | 5023 | assert(SvPVX_const(current) == SvPVX_const(nsv)); |
d3d0e6f1 NC |
5024 | } |
5025 | /* Make the SV before us point to the SV after us. */ | |
5026 | if (DEBUG_C_TEST) { | |
5027 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5028 | sv_dump(current); | |
a29f6d03 NC |
5029 | PerlIO_printf(Perl_debug_log, |
5030 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5031 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5032 | } | |
a29f6d03 | 5033 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5034 | } |
5035 | #endif | |
79072805 | 5036 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5037 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 5038 | SvREFCNT(nsv) = 0; |
463ee0b2 | 5039 | del_SV(nsv); |
79072805 LW |
5040 | } |
5041 | ||
c461cf8f JH |
5042 | /* |
5043 | =for apidoc sv_clear | |
5044 | ||
645c22ef DM |
5045 | Clear an SV: call any destructors, free up any memory used by the body, |
5046 | and free the body itself. The SV's head is I<not> freed, although | |
5047 | its type is set to all 1's so that it won't inadvertently be assumed | |
5048 | to be live during global destruction etc. | |
5049 | This function should only be called when REFCNT is zero. Most of the time | |
5050 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5051 | instead. | |
c461cf8f JH |
5052 | |
5053 | =cut | |
5054 | */ | |
5055 | ||
79072805 | 5056 | void |
864dbfa3 | 5057 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5058 | { |
27da23d5 | 5059 | dVAR; |
82bb6deb | 5060 | const U32 type = SvTYPE(sv); |
8edfc514 NC |
5061 | const struct body_details *const sv_type_details |
5062 | = bodies_by_type + type; | |
dd69841b | 5063 | HV *stash; |
82bb6deb | 5064 | |
79072805 LW |
5065 | assert(sv); |
5066 | assert(SvREFCNT(sv) == 0); | |
5067 | ||
d2a0f284 JC |
5068 | if (type <= SVt_IV) { |
5069 | /* See the comment in sv.h about the collusion between this early | |
5070 | return and the overloading of the NULL and IV slots in the size | |
5071 | table. */ | |
82bb6deb | 5072 | return; |
d2a0f284 | 5073 | } |
82bb6deb | 5074 | |
ed6116ce | 5075 | if (SvOBJECT(sv)) { |
3280af22 | 5076 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5077 | dSP; |
893645bd | 5078 | HV* stash; |
d460ef45 | 5079 | do { |
b464bac0 | 5080 | CV* destructor; |
4e8e7886 | 5081 | stash = SvSTASH(sv); |
32251b26 | 5082 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5083 | if (destructor) { |
1b6737cc | 5084 | SV* const tmpref = newRV(sv); |
5cc433a6 | 5085 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ |
4e8e7886 | 5086 | ENTER; |
e788e7d3 | 5087 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5088 | EXTEND(SP, 2); |
5089 | PUSHMARK(SP); | |
5cc433a6 | 5090 | PUSHs(tmpref); |
4e8e7886 | 5091 | PUTBACK; |
44389ee9 | 5092 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
7a5fa8a2 NIS |
5093 | |
5094 | ||
d3acc0f7 | 5095 | POPSTACK; |
3095d977 | 5096 | SPAGAIN; |
4e8e7886 | 5097 | LEAVE; |
5cc433a6 AB |
5098 | if(SvREFCNT(tmpref) < 2) { |
5099 | /* tmpref is not kept alive! */ | |
5100 | SvREFCNT(sv)--; | |
b162af07 | 5101 | SvRV_set(tmpref, NULL); |
5cc433a6 AB |
5102 | SvROK_off(tmpref); |
5103 | } | |
5104 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5105 | } |
5106 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5107 | |
6f44e0a4 JP |
5108 | |
5109 | if (SvREFCNT(sv)) { | |
5110 | if (PL_in_clean_objs) | |
cea2e8a9 | 5111 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
bfcb3514 | 5112 | HvNAME_get(stash)); |
6f44e0a4 JP |
5113 | /* DESTROY gave object new lease on life */ |
5114 | return; | |
5115 | } | |
a0d0e21e | 5116 | } |
4e8e7886 | 5117 | |
a0d0e21e | 5118 | if (SvOBJECT(sv)) { |
4e8e7886 | 5119 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e | 5120 | SvOBJECT_off(sv); /* Curse the object. */ |
82bb6deb | 5121 | if (type != SVt_PVIO) |
3280af22 | 5122 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5123 | } |
463ee0b2 | 5124 | } |
82bb6deb | 5125 | if (type >= SVt_PVMG) { |
cecf5685 | 5126 | if (type == SVt_PVMG && SvPAD_OUR(sv)) { |
73d95100 | 5127 | SvREFCNT_dec(SvOURSTASH(sv)); |
e736a858 | 5128 | } else if (SvMAGIC(sv)) |
524189f1 | 5129 | mg_free(sv); |
00b1698f | 5130 | if (type == SVt_PVMG && SvPAD_TYPED(sv)) |
524189f1 JH |
5131 | SvREFCNT_dec(SvSTASH(sv)); |
5132 | } | |
82bb6deb | 5133 | switch (type) { |
cecf5685 | 5134 | /* case SVt_BIND: */ |
8990e307 | 5135 | case SVt_PVIO: |
df0bd2f4 GS |
5136 | if (IoIFP(sv) && |
5137 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5138 | IoIFP(sv) != PerlIO_stdout() && |
5139 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5140 | { |
f2b5be74 | 5141 | io_close((IO*)sv, FALSE); |
93578b34 | 5142 | } |
1d7c1841 | 5143 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5144 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5145 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5146 | Safefree(IoTOP_NAME(sv)); |
5147 | Safefree(IoFMT_NAME(sv)); | |
5148 | Safefree(IoBOTTOM_NAME(sv)); | |
82bb6deb | 5149 | goto freescalar; |
79072805 | 5150 | case SVt_PVCV: |
748a9306 | 5151 | case SVt_PVFM: |
85e6fe83 | 5152 | cv_undef((CV*)sv); |
a0d0e21e | 5153 | goto freescalar; |
79072805 | 5154 | case SVt_PVHV: |
86f55936 | 5155 | Perl_hv_kill_backrefs(aTHX_ (HV*)sv); |
85e6fe83 | 5156 | hv_undef((HV*)sv); |
a0d0e21e | 5157 | break; |
79072805 | 5158 | case SVt_PVAV: |
3f90d085 DM |
5159 | if (PL_comppad == (AV*)sv) { |
5160 | PL_comppad = NULL; | |
5161 | PL_curpad = NULL; | |
5162 | } | |
85e6fe83 | 5163 | av_undef((AV*)sv); |
a0d0e21e | 5164 | break; |
02270b4e | 5165 | case SVt_PVLV: |
dd28f7bb DM |
5166 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5167 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5168 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5169 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5170 | } | |
5171 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5172 | SvREFCNT_dec(LvTARG(sv)); | |
a0d0e21e | 5173 | case SVt_PVGV: |
cecf5685 | 5174 | if (isGV_with_GP(sv)) { |
dd69841b BB |
5175 | if(GvCVu((GV*)sv) && (stash = GvSTASH((GV*)sv)) && HvNAME_get(stash)) |
5176 | mro_method_changed_in(stash); | |
cecf5685 NC |
5177 | gp_free((GV*)sv); |
5178 | if (GvNAME_HEK(sv)) | |
5179 | unshare_hek(GvNAME_HEK(sv)); | |
dd69841b BB |
5180 | /* If we're in a stash, we don't own a reference to it. However it does |
5181 | have a back reference to us, which needs to be cleared. */ | |
5182 | if (!SvVALID(sv) && (stash = GvSTASH(sv))) | |
5183 | sv_del_backref((SV*)stash, sv); | |
cecf5685 | 5184 | } |
8571fe2f NC |
5185 | /* FIXME. There are probably more unreferenced pointers to SVs in the |
5186 | interpreter struct that we should check and tidy in a similar | |
5187 | fashion to this: */ | |
5188 | if ((GV*)sv == PL_last_in_gv) | |
5189 | PL_last_in_gv = NULL; | |
79072805 | 5190 | case SVt_PVMG: |
79072805 LW |
5191 | case SVt_PVNV: |
5192 | case SVt_PVIV: | |
a0d0e21e | 5193 | freescalar: |
5228ca4e NC |
5194 | /* Don't bother with SvOOK_off(sv); as we're only going to free it. */ |
5195 | if (SvOOK(sv)) { | |
93524f2b | 5196 | SvPV_set(sv, SvPVX_mutable(sv) - SvIVX(sv)); |
5228ca4e NC |
5197 | /* Don't even bother with turning off the OOK flag. */ |
5198 | } | |
79072805 | 5199 | case SVt_PV: |
a0d0e21e | 5200 | case SVt_RV: |
810b8aa5 | 5201 | if (SvROK(sv)) { |
b37c2d43 | 5202 | SV * const target = SvRV(sv); |
810b8aa5 | 5203 | if (SvWEAKREF(sv)) |
e15faf7d | 5204 | sv_del_backref(target, sv); |
810b8aa5 | 5205 | else |
e15faf7d | 5206 | SvREFCNT_dec(target); |
810b8aa5 | 5207 | } |
f8c7b90f | 5208 | #ifdef PERL_OLD_COPY_ON_WRITE |
3f7c398e | 5209 | else if (SvPVX_const(sv)) { |
765f542d NC |
5210 | if (SvIsCOW(sv)) { |
5211 | /* I believe I need to grab the global SV mutex here and | |
5212 | then recheck the COW status. */ | |
46187eeb NC |
5213 | if (DEBUG_C_TEST) { |
5214 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5215 | sv_dump(sv); |
46187eeb | 5216 | } |
5302ffd4 NC |
5217 | if (SvLEN(sv)) { |
5218 | sv_release_COW(sv, SvPVX_const(sv), SV_COW_NEXT_SV(sv)); | |
5219 | } else { | |
5220 | unshare_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sv))); | |
5221 | } | |
5222 | ||
765f542d NC |
5223 | /* And drop it here. */ |
5224 | SvFAKE_off(sv); | |
5225 | } else if (SvLEN(sv)) { | |
3f7c398e | 5226 | Safefree(SvPVX_const(sv)); |
765f542d NC |
5227 | } |
5228 | } | |
5229 | #else | |
3f7c398e | 5230 | else if (SvPVX_const(sv) && SvLEN(sv)) |
94010e71 | 5231 | Safefree(SvPVX_mutable(sv)); |
3f7c398e | 5232 | else if (SvPVX_const(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
bdd68bc3 | 5233 | unshare_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sv))); |
1c846c1f NIS |
5234 | SvFAKE_off(sv); |
5235 | } | |
765f542d | 5236 | #endif |
79072805 LW |
5237 | break; |
5238 | case SVt_NV: | |
79072805 LW |
5239 | break; |
5240 | } | |
5241 | ||
893645bd NC |
5242 | SvFLAGS(sv) &= SVf_BREAK; |
5243 | SvFLAGS(sv) |= SVTYPEMASK; | |
5244 | ||
8edfc514 | 5245 | if (sv_type_details->arena) { |
b9502f15 | 5246 | del_body(((char *)SvANY(sv) + sv_type_details->offset), |
8edfc514 NC |
5247 | &PL_body_roots[type]); |
5248 | } | |
d2a0f284 | 5249 | else if (sv_type_details->body_size) { |
8edfc514 NC |
5250 | my_safefree(SvANY(sv)); |
5251 | } | |
79072805 LW |
5252 | } |
5253 | ||
645c22ef DM |
5254 | /* |
5255 | =for apidoc sv_newref | |
5256 | ||
5257 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
5258 | instead. | |
5259 | ||
5260 | =cut | |
5261 | */ | |
5262 | ||
79072805 | 5263 | SV * |
864dbfa3 | 5264 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 5265 | { |
96a5add6 | 5266 | PERL_UNUSED_CONTEXT; |
463ee0b2 | 5267 | if (sv) |
4db098f4 | 5268 | (SvREFCNT(sv))++; |
79072805 LW |
5269 | return sv; |
5270 | } | |
5271 | ||
c461cf8f JH |
5272 | /* |
5273 | =for apidoc sv_free | |
5274 | ||
645c22ef DM |
5275 | Decrement an SV's reference count, and if it drops to zero, call |
5276 | C<sv_clear> to invoke destructors and free up any memory used by | |
5277 | the body; finally, deallocate the SV's head itself. | |
5278 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
5279 | |
5280 | =cut | |
5281 | */ | |
5282 | ||
79072805 | 5283 | void |
864dbfa3 | 5284 | Perl_sv_free(pTHX_ SV *sv) |
79072805 | 5285 | { |
27da23d5 | 5286 | dVAR; |
79072805 LW |
5287 | if (!sv) |
5288 | return; | |
a0d0e21e LW |
5289 | if (SvREFCNT(sv) == 0) { |
5290 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
5291 | /* this SV's refcnt has been artificially decremented to |
5292 | * trigger cleanup */ | |
a0d0e21e | 5293 | return; |
3280af22 | 5294 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 5295 | return; |
d689ffdd JP |
5296 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5297 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5298 | SvREFCNT(sv) = (~(U32)0)/2; | |
5299 | return; | |
5300 | } | |
41e4abd8 | 5301 | if (ckWARN_d(WARN_INTERNAL)) { |
d5dede04 | 5302 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
5303 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
5304 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
41e4abd8 NC |
5305 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
5306 | Perl_dump_sv_child(aTHX_ sv); | |
e4c5322d DM |
5307 | #else |
5308 | #ifdef DEBUG_LEAKING_SCALARS | |
5309 | sv_dump(sv); | |
5310 | #endif | |
41e4abd8 NC |
5311 | #endif |
5312 | } | |
79072805 LW |
5313 | return; |
5314 | } | |
4db098f4 | 5315 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 5316 | return; |
8c4d3c90 NC |
5317 | Perl_sv_free2(aTHX_ sv); |
5318 | } | |
5319 | ||
5320 | void | |
5321 | Perl_sv_free2(pTHX_ SV *sv) | |
5322 | { | |
27da23d5 | 5323 | dVAR; |
463ee0b2 LW |
5324 | #ifdef DEBUGGING |
5325 | if (SvTEMP(sv)) { | |
0453d815 | 5326 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 5327 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
5328 | "Attempt to free temp prematurely: SV 0x%"UVxf |
5329 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 5330 | return; |
79072805 | 5331 | } |
463ee0b2 | 5332 | #endif |
d689ffdd JP |
5333 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5334 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5335 | SvREFCNT(sv) = (~(U32)0)/2; | |
5336 | return; | |
5337 | } | |
79072805 | 5338 | sv_clear(sv); |
477f5d66 CS |
5339 | if (! SvREFCNT(sv)) |
5340 | del_SV(sv); | |
79072805 LW |
5341 | } |
5342 | ||
954c1994 GS |
5343 | /* |
5344 | =for apidoc sv_len | |
5345 | ||
645c22ef DM |
5346 | Returns the length of the string in the SV. Handles magic and type |
5347 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
5348 | |
5349 | =cut | |
5350 | */ | |
5351 | ||
79072805 | 5352 | STRLEN |
864dbfa3 | 5353 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 5354 | { |
463ee0b2 | 5355 | STRLEN len; |
79072805 LW |
5356 | |
5357 | if (!sv) | |
5358 | return 0; | |
5359 | ||
8990e307 | 5360 | if (SvGMAGICAL(sv)) |
565764a8 | 5361 | len = mg_length(sv); |
8990e307 | 5362 | else |
4d84ee25 | 5363 | (void)SvPV_const(sv, len); |
463ee0b2 | 5364 | return len; |
79072805 LW |
5365 | } |
5366 | ||
c461cf8f JH |
5367 | /* |
5368 | =for apidoc sv_len_utf8 | |
5369 | ||
5370 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 5371 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
5372 | |
5373 | =cut | |
5374 | */ | |
5375 | ||
7e8c5dac HS |
5376 | /* |
5377 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
9564a3bd NC |
5378 | * mg_ptr is used, by sv_pos_u2b() and sv_pos_b2u() - see the comments below. |
5379 | * (Note that the mg_len is not the length of the mg_ptr field. | |
5380 | * This allows the cache to store the character length of the string without | |
5381 | * needing to malloc() extra storage to attach to the mg_ptr.) | |
7a5fa8a2 | 5382 | * |
7e8c5dac HS |
5383 | */ |
5384 | ||
a0ed51b3 | 5385 | STRLEN |
864dbfa3 | 5386 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 5387 | { |
a0ed51b3 LW |
5388 | if (!sv) |
5389 | return 0; | |
5390 | ||
a0ed51b3 | 5391 | if (SvGMAGICAL(sv)) |
b76347f2 | 5392 | return mg_length(sv); |
a0ed51b3 | 5393 | else |
b76347f2 | 5394 | { |
26346457 | 5395 | STRLEN len; |
e62f0680 | 5396 | const U8 *s = (U8*)SvPV_const(sv, len); |
7e8c5dac | 5397 | |
26346457 NC |
5398 | if (PL_utf8cache) { |
5399 | STRLEN ulen; | |
fe5bfecd | 5400 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : NULL; |
26346457 NC |
5401 | |
5402 | if (mg && mg->mg_len != -1) { | |
5403 | ulen = mg->mg_len; | |
5404 | if (PL_utf8cache < 0) { | |
5405 | const STRLEN real = Perl_utf8_length(aTHX_ s, s + len); | |
5406 | if (real != ulen) { | |
5407 | /* Need to turn the assertions off otherwise we may | |
5408 | recurse infinitely while printing error messages. | |
5409 | */ | |
5410 | SAVEI8(PL_utf8cache); | |
5411 | PL_utf8cache = 0; | |
f5992bc4 RB |
5412 | Perl_croak(aTHX_ "panic: sv_len_utf8 cache %"UVuf |
5413 | " real %"UVuf" for %"SVf, | |
be2597df | 5414 | (UV) ulen, (UV) real, SVfARG(sv)); |
26346457 NC |
5415 | } |
5416 | } | |
5417 | } | |
5418 | else { | |
5419 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
5420 | if (!SvREADONLY(sv)) { | |
5421 | if (!mg) { | |
5422 | mg = sv_magicext(sv, 0, PERL_MAGIC_utf8, | |
5423 | &PL_vtbl_utf8, 0, 0); | |
5424 | } | |
cb9e20bb | 5425 | assert(mg); |
26346457 | 5426 | mg->mg_len = ulen; |
cb9e20bb | 5427 | } |
cb9e20bb | 5428 | } |
26346457 | 5429 | return ulen; |
7e8c5dac | 5430 | } |
26346457 | 5431 | return Perl_utf8_length(aTHX_ s, s + len); |
7e8c5dac HS |
5432 | } |
5433 | } | |
5434 | ||
9564a3bd NC |
5435 | /* Walk forwards to find the byte corresponding to the passed in UTF-8 |
5436 | offset. */ | |
bdf30dd6 | 5437 | static STRLEN |
721e86b6 | 5438 | S_sv_pos_u2b_forwards(const U8 *const start, const U8 *const send, |
bdf30dd6 NC |
5439 | STRLEN uoffset) |
5440 | { | |
5441 | const U8 *s = start; | |
5442 | ||
5443 | while (s < send && uoffset--) | |
5444 | s += UTF8SKIP(s); | |
5445 | if (s > send) { | |
5446 | /* This is the existing behaviour. Possibly it should be a croak, as | |
5447 | it's actually a bounds error */ | |
5448 | s = send; | |
5449 | } | |
5450 | return s - start; | |
5451 | } | |
5452 | ||
9564a3bd NC |
5453 | /* Given the length of the string in both bytes and UTF-8 characters, decide |
5454 | whether to walk forwards or backwards to find the byte corresponding to | |
5455 | the passed in UTF-8 offset. */ | |
c336ad0b | 5456 | static STRLEN |
721e86b6 | 5457 | S_sv_pos_u2b_midway(const U8 *const start, const U8 *send, |
c336ad0b NC |
5458 | STRLEN uoffset, STRLEN uend) |
5459 | { | |
5460 | STRLEN backw = uend - uoffset; | |
5461 | if (uoffset < 2 * backw) { | |
25a8a4ef | 5462 | /* The assumption is that going forwards is twice the speed of going |
c336ad0b NC |
5463 | forward (that's where the 2 * backw comes from). |
5464 | (The real figure of course depends on the UTF-8 data.) */ | |
721e86b6 | 5465 | return sv_pos_u2b_forwards(start, send, uoffset); |
c336ad0b NC |
5466 | } |
5467 | ||
5468 | while (backw--) { | |
5469 | send--; | |
5470 | while (UTF8_IS_CONTINUATION(*send)) | |
5471 | send--; | |
5472 | } | |
5473 | return send - start; | |
5474 | } | |
5475 | ||
9564a3bd NC |
5476 | /* For the string representation of the given scalar, find the byte |
5477 | corresponding to the passed in UTF-8 offset. uoffset0 and boffset0 | |
5478 | give another position in the string, *before* the sought offset, which | |
5479 | (which is always true, as 0, 0 is a valid pair of positions), which should | |
5480 | help reduce the amount of linear searching. | |
5481 | If *mgp is non-NULL, it should point to the UTF-8 cache magic, which | |
5482 | will be used to reduce the amount of linear searching. The cache will be | |
5483 | created if necessary, and the found value offered to it for update. */ | |
28ccbf94 NC |
5484 | static STRLEN |
5485 | S_sv_pos_u2b_cached(pTHX_ SV *sv, MAGIC **mgp, const U8 *const start, | |
5486 | const U8 *const send, STRLEN uoffset, | |
5487 | STRLEN uoffset0, STRLEN boffset0) { | |
7087a21c | 5488 | STRLEN boffset = 0; /* Actually always set, but let's keep gcc happy. */ |
c336ad0b NC |
5489 | bool found = FALSE; |
5490 | ||
75c33c12 NC |
5491 | assert (uoffset >= uoffset0); |
5492 | ||
c336ad0b | 5493 | if (SvMAGICAL(sv) && !SvREADONLY(sv) && PL_utf8cache |
0905937d | 5494 | && (*mgp || (*mgp = mg_find(sv, PERL_MAGIC_utf8)))) { |
d8b2e1f9 NC |
5495 | if ((*mgp)->mg_ptr) { |
5496 | STRLEN *cache = (STRLEN *) (*mgp)->mg_ptr; | |
5497 | if (cache[0] == uoffset) { | |
5498 | /* An exact match. */ | |
5499 | return cache[1]; | |
5500 | } | |
ab455f60 NC |
5501 | if (cache[2] == uoffset) { |
5502 | /* An exact match. */ | |
5503 | return cache[3]; | |
5504 | } | |
668af93f NC |
5505 | |
5506 | if (cache[0] < uoffset) { | |
d8b2e1f9 NC |
5507 | /* The cache already knows part of the way. */ |
5508 | if (cache[0] > uoffset0) { | |
5509 | /* The cache knows more than the passed in pair */ | |
5510 | uoffset0 = cache[0]; | |
5511 | boffset0 = cache[1]; | |
5512 | } | |
5513 | if ((*mgp)->mg_len != -1) { | |
5514 | /* And we know the end too. */ | |
5515 | boffset = boffset0 | |
721e86b6 | 5516 | + sv_pos_u2b_midway(start + boffset0, send, |
d8b2e1f9 NC |
5517 | uoffset - uoffset0, |
5518 | (*mgp)->mg_len - uoffset0); | |
5519 | } else { | |
5520 | boffset = boffset0 | |
721e86b6 | 5521 | + sv_pos_u2b_forwards(start + boffset0, |
d8b2e1f9 NC |
5522 | send, uoffset - uoffset0); |
5523 | } | |
dd7c5fd3 NC |
5524 | } |
5525 | else if (cache[2] < uoffset) { | |
5526 | /* We're between the two cache entries. */ | |
5527 | if (cache[2] > uoffset0) { | |
5528 | /* and the cache knows more than the passed in pair */ | |
5529 | uoffset0 = cache[2]; | |
5530 | boffset0 = cache[3]; | |
5531 | } | |
5532 | ||
668af93f | 5533 | boffset = boffset0 |
721e86b6 | 5534 | + sv_pos_u2b_midway(start + boffset0, |
668af93f NC |
5535 | start + cache[1], |
5536 | uoffset - uoffset0, | |
5537 | cache[0] - uoffset0); | |
dd7c5fd3 NC |
5538 | } else { |
5539 | boffset = boffset0 | |
721e86b6 | 5540 | + sv_pos_u2b_midway(start + boffset0, |
dd7c5fd3 NC |
5541 | start + cache[3], |
5542 | uoffset - uoffset0, | |
5543 | cache[2] - uoffset0); | |
d8b2e1f9 | 5544 | } |
668af93f | 5545 | found = TRUE; |
d8b2e1f9 NC |
5546 | } |
5547 | else if ((*mgp)->mg_len != -1) { | |
75c33c12 NC |
5548 | /* If we can take advantage of a passed in offset, do so. */ |
5549 | /* In fact, offset0 is either 0, or less than offset, so don't | |
5550 | need to worry about the other possibility. */ | |
5551 | boffset = boffset0 | |
721e86b6 | 5552 | + sv_pos_u2b_midway(start + boffset0, send, |
75c33c12 NC |
5553 | uoffset - uoffset0, |
5554 | (*mgp)->mg_len - uoffset0); | |
c336ad0b NC |
5555 | found = TRUE; |
5556 | } | |
28ccbf94 | 5557 | } |
c336ad0b NC |
5558 | |
5559 | if (!found || PL_utf8cache < 0) { | |
75c33c12 | 5560 | const STRLEN real_boffset |
721e86b6 | 5561 | = boffset0 + sv_pos_u2b_forwards(start + boffset0, |
75c33c12 NC |
5562 | send, uoffset - uoffset0); |
5563 | ||
c336ad0b NC |
5564 | if (found && PL_utf8cache < 0) { |
5565 | if (real_boffset != boffset) { | |
5566 | /* Need to turn the assertions off otherwise we may recurse | |
5567 | infinitely while printing error messages. */ | |
5568 | SAVEI8(PL_utf8cache); | |
5569 | PL_utf8cache = 0; | |
f5992bc4 RB |
5570 | Perl_croak(aTHX_ "panic: sv_pos_u2b_cache cache %"UVuf |
5571 | " real %"UVuf" for %"SVf, | |
be2597df | 5572 | (UV) boffset, (UV) real_boffset, SVfARG(sv)); |
c336ad0b NC |
5573 | } |
5574 | } | |
5575 | boffset = real_boffset; | |
28ccbf94 | 5576 | } |
0905937d | 5577 | |
ab455f60 | 5578 | S_utf8_mg_pos_cache_update(aTHX_ sv, mgp, boffset, uoffset, send - start); |
28ccbf94 NC |
5579 | return boffset; |
5580 | } | |
5581 | ||
9564a3bd NC |
5582 | |
5583 | /* | |
5584 | =for apidoc sv_pos_u2b | |
5585 | ||
5586 | Converts the value pointed to by offsetp from a count of UTF-8 chars from | |
5587 | the start of the string, to a count of the equivalent number of bytes; if | |
5588 | lenp is non-zero, it does the same to lenp, but this time starting from | |
5589 | the offset, rather than from the start of the string. Handles magic and | |
5590 | type coercion. | |
5591 | ||
5592 | =cut | |
5593 | */ | |
5594 | ||
5595 | /* | |
5596 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
5597 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5598 | * byte offsets. See also the comments of S_utf8_mg_pos_cache_update(). | |
5599 | * | |
5600 | */ | |
5601 | ||
a0ed51b3 | 5602 | void |
864dbfa3 | 5603 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 5604 | { |
245d4a47 | 5605 | const U8 *start; |
a0ed51b3 LW |
5606 | STRLEN len; |
5607 | ||
5608 | if (!sv) | |
5609 | return; | |
5610 | ||
245d4a47 | 5611 | start = (U8*)SvPV_const(sv, len); |
7e8c5dac | 5612 | if (len) { |
bdf30dd6 NC |
5613 | STRLEN uoffset = (STRLEN) *offsetp; |
5614 | const U8 * const send = start + len; | |
0905937d | 5615 | MAGIC *mg = NULL; |
721e86b6 | 5616 | const STRLEN boffset = sv_pos_u2b_cached(sv, &mg, start, send, |
28ccbf94 | 5617 | uoffset, 0, 0); |
bdf30dd6 NC |
5618 | |
5619 | *offsetp = (I32) boffset; | |
5620 | ||
5621 | if (lenp) { | |
28ccbf94 | 5622 | /* Convert the relative offset to absolute. */ |
721e86b6 AL |
5623 | const STRLEN uoffset2 = uoffset + (STRLEN) *lenp; |
5624 | const STRLEN boffset2 | |
5625 | = sv_pos_u2b_cached(sv, &mg, start, send, uoffset2, | |
28ccbf94 | 5626 | uoffset, boffset) - boffset; |
bdf30dd6 | 5627 | |
28ccbf94 | 5628 | *lenp = boffset2; |
bdf30dd6 | 5629 | } |
7e8c5dac HS |
5630 | } |
5631 | else { | |
5632 | *offsetp = 0; | |
5633 | if (lenp) | |
5634 | *lenp = 0; | |
a0ed51b3 | 5635 | } |
e23c8137 | 5636 | |
a0ed51b3 LW |
5637 | return; |
5638 | } | |
5639 | ||
9564a3bd NC |
5640 | /* Create and update the UTF8 magic offset cache, with the proffered utf8/ |
5641 | byte length pairing. The (byte) length of the total SV is passed in too, | |
5642 | as blen, because for some (more esoteric) SVs, the call to SvPV_const() | |
5643 | may not have updated SvCUR, so we can't rely on reading it directly. | |
5644 | ||
5645 | The proffered utf8/byte length pairing isn't used if the cache already has | |
5646 | two pairs, and swapping either for the proffered pair would increase the | |
5647 | RMS of the intervals between known byte offsets. | |
5648 | ||
5649 | The cache itself consists of 4 STRLEN values | |
5650 | 0: larger UTF-8 offset | |
5651 | 1: corresponding byte offset | |
5652 | 2: smaller UTF-8 offset | |
5653 | 3: corresponding byte offset | |
5654 | ||
5655 | Unused cache pairs have the value 0, 0. | |
5656 | Keeping the cache "backwards" means that the invariant of | |
5657 | cache[0] >= cache[2] is maintained even with empty slots, which means that | |
5658 | the code that uses it doesn't need to worry if only 1 entry has actually | |
5659 | been set to non-zero. It also makes the "position beyond the end of the | |
5660 | cache" logic much simpler, as the first slot is always the one to start | |
5661 | from. | |
645c22ef | 5662 | */ |
ec07b5e0 | 5663 | static void |
ab455f60 NC |
5664 | S_utf8_mg_pos_cache_update(pTHX_ SV *sv, MAGIC **mgp, STRLEN byte, STRLEN utf8, |
5665 | STRLEN blen) | |
ec07b5e0 NC |
5666 | { |
5667 | STRLEN *cache; | |
5668 | if (SvREADONLY(sv)) | |
5669 | return; | |
5670 | ||
5671 | if (!*mgp) { | |
5672 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, (MGVTBL*)&PL_vtbl_utf8, 0, | |
5673 | 0); | |
5674 | (*mgp)->mg_len = -1; | |
5675 | } | |
5676 | assert(*mgp); | |
5677 | ||
5678 | if (!(cache = (STRLEN *)(*mgp)->mg_ptr)) { | |
5679 | Newxz(cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
5680 | (*mgp)->mg_ptr = (char *) cache; | |
5681 | } | |
5682 | assert(cache); | |
5683 | ||
5684 | if (PL_utf8cache < 0) { | |
ef816a78 | 5685 | const U8 *start = (const U8 *) SvPVX_const(sv); |
6448472a | 5686 | const STRLEN realutf8 = utf8_length(start, start + byte); |
ec07b5e0 NC |
5687 | |
5688 | if (realutf8 != utf8) { | |
5689 | /* Need to turn the assertions off otherwise we may recurse | |
5690 | infinitely while printing error messages. */ | |
5691 | SAVEI8(PL_utf8cache); | |
5692 | PL_utf8cache = 0; | |
f5992bc4 | 5693 | Perl_croak(aTHX_ "panic: utf8_mg_pos_cache_update cache %"UVuf |
be2597df | 5694 | " real %"UVuf" for %"SVf, (UV) utf8, (UV) realutf8, SVfARG(sv)); |
ec07b5e0 NC |
5695 | } |
5696 | } | |
ab455f60 NC |
5697 | |
5698 | /* Cache is held with the later position first, to simplify the code | |
5699 | that deals with unbounded ends. */ | |
5700 | ||
5701 | ASSERT_UTF8_CACHE(cache); | |
5702 | if (cache[1] == 0) { | |
5703 | /* Cache is totally empty */ | |
5704 | cache[0] = utf8; | |
5705 | cache[1] = byte; | |
5706 | } else if (cache[3] == 0) { | |
5707 | if (byte > cache[1]) { | |
5708 | /* New one is larger, so goes first. */ | |
5709 | cache[2] = cache[0]; | |
5710 | cache[3] = cache[1]; | |
5711 | cache[0] = utf8; | |
5712 | cache[1] = byte; | |
5713 | } else { | |
5714 | cache[2] = utf8; | |
5715 | cache[3] = byte; | |
5716 | } | |
5717 | } else { | |
5718 | #define THREEWAY_SQUARE(a,b,c,d) \ | |
5719 | ((float)((d) - (c))) * ((float)((d) - (c))) \ | |
5720 | + ((float)((c) - (b))) * ((float)((c) - (b))) \ | |
5721 | + ((float)((b) - (a))) * ((float)((b) - (a))) | |
5722 | ||
5723 | /* Cache has 2 slots in use, and we know three potential pairs. | |
5724 | Keep the two that give the lowest RMS distance. Do the | |
5725 | calcualation in bytes simply because we always know the byte | |
5726 | length. squareroot has the same ordering as the positive value, | |
5727 | so don't bother with the actual square root. */ | |
5728 | const float existing = THREEWAY_SQUARE(0, cache[3], cache[1], blen); | |
5729 | if (byte > cache[1]) { | |
5730 | /* New position is after the existing pair of pairs. */ | |
5731 | const float keep_earlier | |
5732 | = THREEWAY_SQUARE(0, cache[3], byte, blen); | |
5733 | const float keep_later | |
5734 | = THREEWAY_SQUARE(0, cache[1], byte, blen); | |
5735 | ||
5736 | if (keep_later < keep_earlier) { | |
5737 | if (keep_later < existing) { | |
5738 | cache[2] = cache[0]; | |
5739 | cache[3] = cache[1]; | |
5740 | cache[0] = utf8; | |
5741 | cache[1] = byte; | |
5742 | } | |
5743 | } | |
5744 | else { | |
5745 | if (keep_earlier < existing) { | |
5746 | cache[0] = utf8; | |
5747 | cache[1] = byte; | |
5748 | } | |
5749 | } | |
5750 | } | |
57d7fbf1 NC |
5751 | else if (byte > cache[3]) { |
5752 | /* New position is between the existing pair of pairs. */ | |
5753 | const float keep_earlier | |
5754 | = THREEWAY_SQUARE(0, cache[3], byte, blen); | |
5755 | const float keep_later | |
5756 | = THREEWAY_SQUARE(0, byte, cache[1], blen); | |
5757 | ||
5758 | if (keep_later < keep_earlier) { | |
5759 | if (keep_later < existing) { | |
5760 | cache[2] = utf8; | |
5761 | cache[3] = byte; | |
5762 | } | |
5763 | } | |
5764 | else { | |
5765 | if (keep_earlier < existing) { | |
5766 | cache[0] = utf8; | |
5767 | cache[1] = byte; | |
5768 | } | |
5769 | } | |
5770 | } | |
5771 | else { | |
5772 | /* New position is before the existing pair of pairs. */ | |
5773 | const float keep_earlier | |
5774 | = THREEWAY_SQUARE(0, byte, cache[3], blen); | |
5775 | const float keep_later | |
5776 | = THREEWAY_SQUARE(0, byte, cache[1], blen); | |
5777 | ||
5778 | if (keep_later < keep_earlier) { | |
5779 | if (keep_later < existing) { | |
5780 | cache[2] = utf8; | |
5781 | cache[3] = byte; | |
5782 | } | |
5783 | } | |
5784 | else { | |
5785 | if (keep_earlier < existing) { | |
5786 | cache[0] = cache[2]; | |
5787 | cache[1] = cache[3]; | |
5788 | cache[2] = utf8; | |
5789 | cache[3] = byte; | |
5790 | } | |
5791 | } | |
5792 | } | |
ab455f60 | 5793 | } |
0905937d | 5794 | ASSERT_UTF8_CACHE(cache); |
ec07b5e0 NC |
5795 | } |
5796 | ||
ec07b5e0 | 5797 | /* We already know all of the way, now we may be able to walk back. The same |
25a8a4ef NC |
5798 | assumption is made as in S_sv_pos_u2b_midway(), namely that walking |
5799 | backward is half the speed of walking forward. */ | |
ec07b5e0 NC |
5800 | static STRLEN |
5801 | S_sv_pos_b2u_midway(pTHX_ const U8 *s, const U8 *const target, const U8 *end, | |
5802 | STRLEN endu) | |
5803 | { | |
5804 | const STRLEN forw = target - s; | |
5805 | STRLEN backw = end - target; | |
5806 | ||
5807 | if (forw < 2 * backw) { | |
6448472a | 5808 | return utf8_length(s, target); |
ec07b5e0 NC |
5809 | } |
5810 | ||
5811 | while (end > target) { | |
5812 | end--; | |
5813 | while (UTF8_IS_CONTINUATION(*end)) { | |
5814 | end--; | |
5815 | } | |
5816 | endu--; | |
5817 | } | |
5818 | return endu; | |
5819 | } | |
5820 | ||
9564a3bd NC |
5821 | /* |
5822 | =for apidoc sv_pos_b2u | |
5823 | ||
5824 | Converts the value pointed to by offsetp from a count of bytes from the | |
5825 | start of the string, to a count of the equivalent number of UTF-8 chars. | |
5826 | Handles magic and type coercion. | |
5827 | ||
5828 | =cut | |
5829 | */ | |
5830 | ||
5831 | /* | |
5832 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
5833 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5834 | * byte offsets. | |
5835 | * | |
5836 | */ | |
a0ed51b3 | 5837 | void |
7e8c5dac | 5838 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 5839 | { |
83003860 | 5840 | const U8* s; |
ec07b5e0 | 5841 | const STRLEN byte = *offsetp; |
7087a21c | 5842 | STRLEN len = 0; /* Actually always set, but let's keep gcc happy. */ |
ab455f60 | 5843 | STRLEN blen; |
ec07b5e0 NC |
5844 | MAGIC* mg = NULL; |
5845 | const U8* send; | |
a922f900 | 5846 | bool found = FALSE; |
a0ed51b3 LW |
5847 | |
5848 | if (!sv) | |
5849 | return; | |
5850 | ||
ab455f60 | 5851 | s = (const U8*)SvPV_const(sv, blen); |
7e8c5dac | 5852 | |
ab455f60 | 5853 | if (blen < byte) |
ec07b5e0 | 5854 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac | 5855 | |
ec07b5e0 | 5856 | send = s + byte; |
a67d7df9 | 5857 | |
ffca234a NC |
5858 | if (SvMAGICAL(sv) && !SvREADONLY(sv) && PL_utf8cache |
5859 | && (mg = mg_find(sv, PERL_MAGIC_utf8))) { | |
5860 | if (mg->mg_ptr) { | |
d4c19fe8 | 5861 | STRLEN * const cache = (STRLEN *) mg->mg_ptr; |
b9f984a5 | 5862 | if (cache[1] == byte) { |
ec07b5e0 NC |
5863 | /* An exact match. */ |
5864 | *offsetp = cache[0]; | |
ec07b5e0 | 5865 | return; |
7e8c5dac | 5866 | } |
ab455f60 NC |
5867 | if (cache[3] == byte) { |
5868 | /* An exact match. */ | |
5869 | *offsetp = cache[2]; | |
5870 | return; | |
5871 | } | |
668af93f NC |
5872 | |
5873 | if (cache[1] < byte) { | |
ec07b5e0 | 5874 | /* We already know part of the way. */ |
b9f984a5 NC |
5875 | if (mg->mg_len != -1) { |
5876 | /* Actually, we know the end too. */ | |
5877 | len = cache[0] | |
5878 | + S_sv_pos_b2u_midway(aTHX_ s + cache[1], send, | |
ab455f60 | 5879 | s + blen, mg->mg_len - cache[0]); |
b9f984a5 | 5880 | } else { |
6448472a | 5881 | len = cache[0] + utf8_length(s + cache[1], send); |
b9f984a5 | 5882 | } |
7e8c5dac | 5883 | } |
9f985e4c NC |
5884 | else if (cache[3] < byte) { |
5885 | /* We're between the two cached pairs, so we do the calculation | |
5886 | offset by the byte/utf-8 positions for the earlier pair, | |
5887 | then add the utf-8 characters from the string start to | |
5888 | there. */ | |
5889 | len = S_sv_pos_b2u_midway(aTHX_ s + cache[3], send, | |
5890 | s + cache[1], cache[0] - cache[2]) | |
5891 | + cache[2]; | |
5892 | ||
5893 | } | |
5894 | else { /* cache[3] > byte */ | |
5895 | len = S_sv_pos_b2u_midway(aTHX_ s, send, s + cache[3], | |
5896 | cache[2]); | |
7e8c5dac | 5897 | |
7e8c5dac | 5898 | } |
ec07b5e0 | 5899 | ASSERT_UTF8_CACHE(cache); |
a922f900 | 5900 | found = TRUE; |
ffca234a | 5901 | } else if (mg->mg_len != -1) { |
ab455f60 | 5902 | len = S_sv_pos_b2u_midway(aTHX_ s, send, s + blen, mg->mg_len); |
a922f900 | 5903 | found = TRUE; |
7e8c5dac | 5904 | } |
a0ed51b3 | 5905 | } |
a922f900 | 5906 | if (!found || PL_utf8cache < 0) { |
6448472a | 5907 | const STRLEN real_len = utf8_length(s, send); |
a922f900 NC |
5908 | |
5909 | if (found && PL_utf8cache < 0) { | |
5910 | if (len != real_len) { | |
5911 | /* Need to turn the assertions off otherwise we may recurse | |
5912 | infinitely while printing error messages. */ | |
5913 | SAVEI8(PL_utf8cache); | |
5914 | PL_utf8cache = 0; | |
f5992bc4 RB |
5915 | Perl_croak(aTHX_ "panic: sv_pos_b2u cache %"UVuf |
5916 | " real %"UVuf" for %"SVf, | |
be2597df | 5917 | (UV) len, (UV) real_len, SVfARG(sv)); |
a922f900 NC |
5918 | } |
5919 | } | |
5920 | len = real_len; | |
ec07b5e0 NC |
5921 | } |
5922 | *offsetp = len; | |
5923 | ||
ab455f60 | 5924 | S_utf8_mg_pos_cache_update(aTHX_ sv, &mg, byte, len, blen); |
a0ed51b3 LW |
5925 | } |
5926 | ||
954c1994 GS |
5927 | /* |
5928 | =for apidoc sv_eq | |
5929 | ||
5930 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
5931 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
5932 | coerce its args to strings if necessary. | |
954c1994 GS |
5933 | |
5934 | =cut | |
5935 | */ | |
5936 | ||
79072805 | 5937 | I32 |
e01b9e88 | 5938 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 5939 | { |
97aff369 | 5940 | dVAR; |
e1ec3a88 | 5941 | const char *pv1; |
463ee0b2 | 5942 | STRLEN cur1; |
e1ec3a88 | 5943 | const char *pv2; |
463ee0b2 | 5944 | STRLEN cur2; |
e01b9e88 | 5945 | I32 eq = 0; |
bd61b366 | 5946 | char *tpv = NULL; |
a0714e2c | 5947 | SV* svrecode = NULL; |
79072805 | 5948 | |
e01b9e88 | 5949 | if (!sv1) { |
79072805 LW |
5950 | pv1 = ""; |
5951 | cur1 = 0; | |
5952 | } | |
ced497e2 YST |
5953 | else { |
5954 | /* if pv1 and pv2 are the same, second SvPV_const call may | |
5955 | * invalidate pv1, so we may need to make a copy */ | |
5956 | if (sv1 == sv2 && (SvTHINKFIRST(sv1) || SvGMAGICAL(sv1))) { | |
5957 | pv1 = SvPV_const(sv1, cur1); | |
5958 | sv1 = sv_2mortal(newSVpvn(pv1, cur1)); | |
5959 | if (SvUTF8(sv2)) SvUTF8_on(sv1); | |
5960 | } | |
4d84ee25 | 5961 | pv1 = SvPV_const(sv1, cur1); |
ced497e2 | 5962 | } |
79072805 | 5963 | |
e01b9e88 SC |
5964 | if (!sv2){ |
5965 | pv2 = ""; | |
5966 | cur2 = 0; | |
92d29cee | 5967 | } |
e01b9e88 | 5968 | else |
4d84ee25 | 5969 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 5970 | |
cf48d248 | 5971 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
5972 | /* Differing utf8ness. |
5973 | * Do not UTF8size the comparands as a side-effect. */ | |
5974 | if (PL_encoding) { | |
5975 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
5976 | svrecode = newSVpvn(pv2, cur2); |
5977 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 5978 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
5979 | } |
5980 | else { | |
553e1bcc AT |
5981 | svrecode = newSVpvn(pv1, cur1); |
5982 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 5983 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
5984 | } |
5985 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
5986 | if (cur1 != cur2) { |
5987 | SvREFCNT_dec(svrecode); | |
799ef3cb | 5988 | return FALSE; |
0a1bd7ac | 5989 | } |
799ef3cb JH |
5990 | } |
5991 | else { | |
5992 | bool is_utf8 = TRUE; | |
5993 | ||
5994 | if (SvUTF8(sv1)) { | |
5995 | /* sv1 is the UTF-8 one, | |
5996 | * if is equal it must be downgrade-able */ | |
9d4ba2ae | 5997 | char * const pv = (char*)bytes_from_utf8((const U8*)pv1, |
799ef3cb JH |
5998 | &cur1, &is_utf8); |
5999 | if (pv != pv1) | |
553e1bcc | 6000 | pv1 = tpv = pv; |
799ef3cb JH |
6001 | } |
6002 | else { | |
6003 | /* sv2 is the UTF-8 one, | |
6004 | * if is equal it must be downgrade-able */ | |
9d4ba2ae | 6005 | char * const pv = (char *)bytes_from_utf8((const U8*)pv2, |
799ef3cb JH |
6006 | &cur2, &is_utf8); |
6007 | if (pv != pv2) | |
553e1bcc | 6008 | pv2 = tpv = pv; |
799ef3cb JH |
6009 | } |
6010 | if (is_utf8) { | |
6011 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 6012 | assert (tpv == 0); |
799ef3cb JH |
6013 | return FALSE; |
6014 | } | |
6015 | } | |
cf48d248 JH |
6016 | } |
6017 | ||
6018 | if (cur1 == cur2) | |
765f542d | 6019 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6020 | |
b37c2d43 | 6021 | SvREFCNT_dec(svrecode); |
553e1bcc AT |
6022 | if (tpv) |
6023 | Safefree(tpv); | |
cf48d248 | 6024 | |
e01b9e88 | 6025 | return eq; |
79072805 LW |
6026 | } |
6027 | ||
954c1994 GS |
6028 | /* |
6029 | =for apidoc sv_cmp | |
6030 | ||
6031 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6032 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6033 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6034 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6035 | |
6036 | =cut | |
6037 | */ | |
6038 | ||
79072805 | 6039 | I32 |
e01b9e88 | 6040 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6041 | { |
97aff369 | 6042 | dVAR; |
560a288e | 6043 | STRLEN cur1, cur2; |
e1ec3a88 | 6044 | const char *pv1, *pv2; |
bd61b366 | 6045 | char *tpv = NULL; |
cf48d248 | 6046 | I32 cmp; |
a0714e2c | 6047 | SV *svrecode = NULL; |
560a288e | 6048 | |
e01b9e88 SC |
6049 | if (!sv1) { |
6050 | pv1 = ""; | |
560a288e GS |
6051 | cur1 = 0; |
6052 | } | |
e01b9e88 | 6053 | else |
4d84ee25 | 6054 | pv1 = SvPV_const(sv1, cur1); |
560a288e | 6055 | |
553e1bcc | 6056 | if (!sv2) { |
e01b9e88 | 6057 | pv2 = ""; |
560a288e GS |
6058 | cur2 = 0; |
6059 | } | |
e01b9e88 | 6060 | else |
4d84ee25 | 6061 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 6062 | |
cf48d248 | 6063 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6064 | /* Differing utf8ness. |
6065 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6066 | if (SvUTF8(sv1)) { |
799ef3cb | 6067 | if (PL_encoding) { |
553e1bcc AT |
6068 | svrecode = newSVpvn(pv2, cur2); |
6069 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6070 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
6071 | } |
6072 | else { | |
e1ec3a88 | 6073 | pv2 = tpv = (char*)bytes_to_utf8((const U8*)pv2, &cur2); |
799ef3cb | 6074 | } |
cf48d248 JH |
6075 | } |
6076 | else { | |
799ef3cb | 6077 | if (PL_encoding) { |
553e1bcc AT |
6078 | svrecode = newSVpvn(pv1, cur1); |
6079 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6080 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
6081 | } |
6082 | else { | |
e1ec3a88 | 6083 | pv1 = tpv = (char*)bytes_to_utf8((const U8*)pv1, &cur1); |
799ef3cb | 6084 | } |
cf48d248 JH |
6085 | } |
6086 | } | |
6087 | ||
e01b9e88 | 6088 | if (!cur1) { |
cf48d248 | 6089 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6090 | } else if (!cur2) { |
cf48d248 JH |
6091 | cmp = 1; |
6092 | } else { | |
e1ec3a88 | 6093 | const I32 retval = memcmp((const void*)pv1, (const void*)pv2, cur1 < cur2 ? cur1 : cur2); |
e01b9e88 SC |
6094 | |
6095 | if (retval) { | |
cf48d248 | 6096 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6097 | } else if (cur1 == cur2) { |
cf48d248 JH |
6098 | cmp = 0; |
6099 | } else { | |
6100 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6101 | } |
cf48d248 | 6102 | } |
16660edb | 6103 | |
b37c2d43 | 6104 | SvREFCNT_dec(svrecode); |
553e1bcc AT |
6105 | if (tpv) |
6106 | Safefree(tpv); | |
cf48d248 JH |
6107 | |
6108 | return cmp; | |
bbce6d69 | 6109 | } |
16660edb | 6110 | |
c461cf8f JH |
6111 | /* |
6112 | =for apidoc sv_cmp_locale | |
6113 | ||
645c22ef DM |
6114 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6115 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6116 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6117 | |
6118 | =cut | |
6119 | */ | |
6120 | ||
bbce6d69 | 6121 | I32 |
864dbfa3 | 6122 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6123 | { |
97aff369 | 6124 | dVAR; |
36477c24 | 6125 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6126 | |
bbce6d69 | 6127 | char *pv1, *pv2; |
6128 | STRLEN len1, len2; | |
6129 | I32 retval; | |
16660edb | 6130 | |
3280af22 | 6131 | if (PL_collation_standard) |
bbce6d69 | 6132 | goto raw_compare; |
16660edb | 6133 | |
bbce6d69 | 6134 | len1 = 0; |
8ac85365 | 6135 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6136 | len2 = 0; |
8ac85365 | 6137 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6138 | |
bbce6d69 | 6139 | if (!pv1 || !len1) { |
6140 | if (pv2 && len2) | |
6141 | return -1; | |
6142 | else | |
6143 | goto raw_compare; | |
6144 | } | |
6145 | else { | |
6146 | if (!pv2 || !len2) | |
6147 | return 1; | |
6148 | } | |
16660edb | 6149 | |
bbce6d69 | 6150 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6151 | |
bbce6d69 | 6152 | if (retval) |
16660edb | 6153 | return retval < 0 ? -1 : 1; |
6154 | ||
bbce6d69 | 6155 | /* |
6156 | * When the result of collation is equality, that doesn't mean | |
6157 | * that there are no differences -- some locales exclude some | |
6158 | * characters from consideration. So to avoid false equalities, | |
6159 | * we use the raw string as a tiebreaker. | |
6160 | */ | |
16660edb | 6161 | |
bbce6d69 | 6162 | raw_compare: |
5f66b61c | 6163 | /*FALLTHROUGH*/ |
16660edb | 6164 | |
36477c24 | 6165 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6166 | |
bbce6d69 | 6167 | return sv_cmp(sv1, sv2); |
6168 | } | |
79072805 | 6169 | |
645c22ef | 6170 | |
36477c24 | 6171 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6172 | |
7a4c00b4 | 6173 | /* |
645c22ef DM |
6174 | =for apidoc sv_collxfrm |
6175 | ||
6176 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6177 | ||
6178 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6179 | scalar data of the variable, but transformed to such a format that a normal | |
6180 | memory comparison can be used to compare the data according to the locale | |
6181 | settings. | |
6182 | ||
6183 | =cut | |
6184 | */ | |
6185 | ||
bbce6d69 | 6186 | char * |
864dbfa3 | 6187 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6188 | { |
97aff369 | 6189 | dVAR; |
7a4c00b4 | 6190 | MAGIC *mg; |
16660edb | 6191 | |
14befaf4 | 6192 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6193 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
93524f2b NC |
6194 | const char *s; |
6195 | char *xf; | |
bbce6d69 | 6196 | STRLEN len, xlen; |
6197 | ||
7a4c00b4 | 6198 | if (mg) |
6199 | Safefree(mg->mg_ptr); | |
93524f2b | 6200 | s = SvPV_const(sv, len); |
bbce6d69 | 6201 | if ((xf = mem_collxfrm(s, len, &xlen))) { |
ff0cee69 | 6202 | if (SvREADONLY(sv)) { |
6203 | SAVEFREEPV(xf); | |
6204 | *nxp = xlen; | |
3280af22 | 6205 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6206 | } |
7a4c00b4 | 6207 | if (! mg) { |
d83f0a82 NC |
6208 | #ifdef PERL_OLD_COPY_ON_WRITE |
6209 | if (SvIsCOW(sv)) | |
6210 | sv_force_normal_flags(sv, 0); | |
6211 | #endif | |
6212 | mg = sv_magicext(sv, 0, PERL_MAGIC_collxfrm, &PL_vtbl_collxfrm, | |
6213 | 0, 0); | |
7a4c00b4 | 6214 | assert(mg); |
bbce6d69 | 6215 | } |
7a4c00b4 | 6216 | mg->mg_ptr = xf; |
565764a8 | 6217 | mg->mg_len = xlen; |
7a4c00b4 | 6218 | } |
6219 | else { | |
ff0cee69 | 6220 | if (mg) { |
6221 | mg->mg_ptr = NULL; | |
565764a8 | 6222 | mg->mg_len = -1; |
ff0cee69 | 6223 | } |
bbce6d69 | 6224 | } |
6225 | } | |
7a4c00b4 | 6226 | if (mg && mg->mg_ptr) { |
565764a8 | 6227 | *nxp = mg->mg_len; |
3280af22 | 6228 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6229 | } |
6230 | else { | |
6231 | *nxp = 0; | |
6232 | return NULL; | |
16660edb | 6233 | } |
79072805 LW |
6234 | } |
6235 | ||
36477c24 | 6236 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6237 | |
c461cf8f JH |
6238 | /* |
6239 | =for apidoc sv_gets | |
6240 | ||
6241 | Get a line from the filehandle and store it into the SV, optionally | |
6242 | appending to the currently-stored string. | |
6243 | ||
6244 | =cut | |
6245 | */ | |
6246 | ||
79072805 | 6247 | char * |
864dbfa3 | 6248 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6249 | { |
97aff369 | 6250 | dVAR; |
e1ec3a88 | 6251 | const char *rsptr; |
c07a80fd | 6252 | STRLEN rslen; |
6253 | register STDCHAR rslast; | |
6254 | register STDCHAR *bp; | |
6255 | register I32 cnt; | |
9c5ffd7c | 6256 | I32 i = 0; |
8bfdd7d9 | 6257 | I32 rspara = 0; |
c07a80fd | 6258 | |
bc44a8a2 NC |
6259 | if (SvTHINKFIRST(sv)) |
6260 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6261 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6262 | from <>. | |
6263 | However, perlbench says it's slower, because the existing swipe code | |
6264 | is faster than copy on write. | |
6265 | Swings and roundabouts. */ | |
862a34c6 | 6266 | SvUPGRADE(sv, SVt_PV); |
99491443 | 6267 | |
ff68c719 | 6268 | SvSCREAM_off(sv); |
efd8b2ba AE |
6269 | |
6270 | if (append) { | |
6271 | if (PerlIO_isutf8(fp)) { | |
6272 | if (!SvUTF8(sv)) { | |
6273 | sv_utf8_upgrade_nomg(sv); | |
6274 | sv_pos_u2b(sv,&append,0); | |
6275 | } | |
6276 | } else if (SvUTF8(sv)) { | |
561b68a9 | 6277 | SV * const tsv = newSV(0); |
efd8b2ba AE |
6278 | sv_gets(tsv, fp, 0); |
6279 | sv_utf8_upgrade_nomg(tsv); | |
6280 | SvCUR_set(sv,append); | |
6281 | sv_catsv(sv,tsv); | |
6282 | sv_free(tsv); | |
6283 | goto return_string_or_null; | |
6284 | } | |
6285 | } | |
6286 | ||
6287 | SvPOK_only(sv); | |
6288 | if (PerlIO_isutf8(fp)) | |
6289 | SvUTF8_on(sv); | |
c07a80fd | 6290 | |
923e4eb5 | 6291 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
6292 | /* we always read code in line mode */ |
6293 | rsptr = "\n"; | |
6294 | rslen = 1; | |
6295 | } | |
6296 | else if (RsSNARF(PL_rs)) { | |
7a5fa8a2 | 6297 | /* If it is a regular disk file use size from stat() as estimate |
acbd132f JH |
6298 | of amount we are going to read -- may result in mallocing |
6299 | more memory than we really need if the layers below reduce | |
6300 | the size we read (e.g. CRLF or a gzip layer). | |
e468d35b | 6301 | */ |
e311fd51 | 6302 | Stat_t st; |
e468d35b | 6303 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
f54cb97a | 6304 | const Off_t offset = PerlIO_tell(fp); |
58f1856e | 6305 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6306 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6307 | } | |
6308 | } | |
c07a80fd | 6309 | rsptr = NULL; |
6310 | rslen = 0; | |
6311 | } | |
3280af22 | 6312 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6313 | I32 bytesread; |
5b2b9c68 | 6314 | char *buffer; |
acbd132f | 6315 | U32 recsize; |
5b2b9c68 HM |
6316 | |
6317 | /* Grab the size of the record we're getting */ | |
acbd132f | 6318 | recsize = SvUV(SvRV(PL_rs)); /* RsRECORD() guarantees > 0. */ |
e311fd51 | 6319 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6320 | /* Go yank in */ |
6321 | #ifdef VMS | |
6322 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6323 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6324 | /* doing, but we've got no other real choice - except avoid stdio |
6325 | as implementation - perhaps write a :vms layer ? | |
6326 | */ | |
5b2b9c68 HM |
6327 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6328 | #else | |
6329 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6330 | #endif | |
27e6ca2d AE |
6331 | if (bytesread < 0) |
6332 | bytesread = 0; | |
e311fd51 | 6333 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6334 | buffer[bytesread] = '\0'; |
efd8b2ba | 6335 | goto return_string_or_null; |
5b2b9c68 | 6336 | } |
3280af22 | 6337 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6338 | rsptr = "\n\n"; |
6339 | rslen = 2; | |
8bfdd7d9 | 6340 | rspara = 1; |
c07a80fd | 6341 | } |
7d59b7e4 NIS |
6342 | else { |
6343 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6344 | if (PerlIO_isutf8(fp)) { | |
6345 | rsptr = SvPVutf8(PL_rs, rslen); | |
6346 | } | |
6347 | else { | |
6348 | if (SvUTF8(PL_rs)) { | |
6349 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
6350 | Perl_croak(aTHX_ "Wide character in $/"); | |
6351 | } | |
6352 | } | |
93524f2b | 6353 | rsptr = SvPV_const(PL_rs, rslen); |
7d59b7e4 NIS |
6354 | } |
6355 | } | |
6356 | ||
c07a80fd | 6357 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
6358 | ||
8bfdd7d9 | 6359 | if (rspara) { /* have to do this both before and after */ |
79072805 | 6360 | do { /* to make sure file boundaries work right */ |
760ac839 | 6361 | if (PerlIO_eof(fp)) |
a0d0e21e | 6362 | return 0; |
760ac839 | 6363 | i = PerlIO_getc(fp); |
79072805 | 6364 | if (i != '\n') { |
a0d0e21e LW |
6365 | if (i == -1) |
6366 | return 0; | |
760ac839 | 6367 | PerlIO_ungetc(fp,i); |
79072805 LW |
6368 | break; |
6369 | } | |
6370 | } while (i != EOF); | |
6371 | } | |
c07a80fd | 6372 | |
760ac839 LW |
6373 | /* See if we know enough about I/O mechanism to cheat it ! */ |
6374 | ||
6375 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 6376 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
6377 | enough here - and may even be a macro allowing compile |
6378 | time optimization. | |
6379 | */ | |
6380 | ||
6381 | if (PerlIO_fast_gets(fp)) { | |
6382 | ||
6383 | /* | |
6384 | * We're going to steal some values from the stdio struct | |
6385 | * and put EVERYTHING in the innermost loop into registers. | |
6386 | */ | |
6387 | register STDCHAR *ptr; | |
6388 | STRLEN bpx; | |
6389 | I32 shortbuffered; | |
6390 | ||
16660edb | 6391 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
6392 | /* An ungetc()d char is handled separately from the regular | |
6393 | * buffer, so we getc() it back out and stuff it in the buffer. | |
6394 | */ | |
6395 | i = PerlIO_getc(fp); | |
6396 | if (i == EOF) return 0; | |
6397 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
6398 | (*fp)->_cnt++; | |
6399 | #endif | |
c07a80fd | 6400 | |
c2960299 | 6401 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 6402 | |
a20bf0c3 | 6403 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b | 6404 | /* make sure we have the room */ |
7a5fa8a2 | 6405 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { |
e468d35b | 6406 | /* Not room for all of it |
7a5fa8a2 | 6407 | if we are looking for a separator and room for some |
e468d35b NIS |
6408 | */ |
6409 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7a5fa8a2 | 6410 | /* just process what we have room for */ |
79072805 LW |
6411 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
6412 | cnt -= shortbuffered; | |
6413 | } | |
6414 | else { | |
6415 | shortbuffered = 0; | |
bbce6d69 | 6416 | /* remember that cnt can be negative */ |
eb160463 | 6417 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
6418 | } |
6419 | } | |
7a5fa8a2 | 6420 | else |
79072805 | 6421 | shortbuffered = 0; |
3f7c398e | 6422 | bp = (STDCHAR*)SvPVX_const(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 6423 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 6424 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6425 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 6426 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 6427 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6428 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6429 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
6430 | for (;;) { |
6431 | screamer: | |
93a17b20 | 6432 | if (cnt > 0) { |
c07a80fd | 6433 | if (rslen) { |
760ac839 LW |
6434 | while (cnt > 0) { /* this | eat */ |
6435 | cnt--; | |
c07a80fd | 6436 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
6437 | goto thats_all_folks; /* screams | sed :-) */ | |
6438 | } | |
6439 | } | |
6440 | else { | |
1c846c1f NIS |
6441 | Copy(ptr, bp, cnt, char); /* this | eat */ |
6442 | bp += cnt; /* screams | dust */ | |
c07a80fd | 6443 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 6444 | cnt = 0; |
93a17b20 | 6445 | } |
79072805 LW |
6446 | } |
6447 | ||
748a9306 | 6448 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
6449 | cnt = shortbuffered; |
6450 | shortbuffered = 0; | |
3f7c398e | 6451 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
6452 | SvCUR_set(sv, bpx); |
6453 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
3f7c398e | 6454 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
6455 | continue; |
6456 | } | |
6457 | ||
16660edb | 6458 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
6459 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
6460 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 6461 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 6462 | #if 0 |
16660edb | 6463 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6464 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6465 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6466 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6467 | #endif |
1c846c1f | 6468 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 6469 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
6470 | another abstraction. */ | |
760ac839 | 6471 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 6472 | #if 0 |
16660edb | 6473 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6474 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6475 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6476 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6477 | #endif |
a20bf0c3 JH |
6478 | cnt = PerlIO_get_cnt(fp); |
6479 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 6480 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6481 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 6482 | |
748a9306 LW |
6483 | if (i == EOF) /* all done for ever? */ |
6484 | goto thats_really_all_folks; | |
6485 | ||
3f7c398e | 6486 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
6487 | SvCUR_set(sv, bpx); |
6488 | SvGROW(sv, bpx + cnt + 2); | |
3f7c398e | 6489 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
c07a80fd | 6490 | |
eb160463 | 6491 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 6492 | |
c07a80fd | 6493 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 6494 | goto thats_all_folks; |
79072805 LW |
6495 | } |
6496 | ||
6497 | thats_all_folks: | |
3f7c398e | 6498 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX_const(sv)) < rslen) || |
36477c24 | 6499 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 6500 | goto screamer; /* go back to the fray */ |
79072805 LW |
6501 | thats_really_all_folks: |
6502 | if (shortbuffered) | |
6503 | cnt += shortbuffered; | |
16660edb | 6504 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6505 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 6506 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 6507 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6508 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6509 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6510 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 6511 | *bp = '\0'; |
3f7c398e | 6512 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX_const(sv)); /* set length */ |
16660edb | 6513 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 6514 | "Screamer: done, len=%ld, string=|%.*s|\n", |
3f7c398e | 6515 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX_const(sv))); |
760ac839 LW |
6516 | } |
6517 | else | |
79072805 | 6518 | { |
6edd2cd5 | 6519 | /*The big, slow, and stupid way. */ |
27da23d5 | 6520 | #ifdef USE_HEAP_INSTEAD_OF_STACK /* Even slower way. */ |
cbbf8932 | 6521 | STDCHAR *buf = NULL; |
a02a5408 | 6522 | Newx(buf, 8192, STDCHAR); |
6edd2cd5 | 6523 | assert(buf); |
4d2c4e07 | 6524 | #else |
6edd2cd5 | 6525 | STDCHAR buf[8192]; |
4d2c4e07 | 6526 | #endif |
79072805 | 6527 | |
760ac839 | 6528 | screamer2: |
c07a80fd | 6529 | if (rslen) { |
00b6aa41 | 6530 | register const STDCHAR * const bpe = buf + sizeof(buf); |
760ac839 | 6531 | bp = buf; |
eb160463 | 6532 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
6533 | ; /* keep reading */ |
6534 | cnt = bp - buf; | |
c07a80fd | 6535 | } |
6536 | else { | |
760ac839 | 6537 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 6538 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
6539 | * both args of ?: operator, causing EOF to change into 255 | |
6540 | */ | |
37be0adf | 6541 | if (cnt > 0) |
cbe9e203 JH |
6542 | i = (U8)buf[cnt - 1]; |
6543 | else | |
37be0adf | 6544 | i = EOF; |
c07a80fd | 6545 | } |
79072805 | 6546 | |
cbe9e203 JH |
6547 | if (cnt < 0) |
6548 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
6549 | if (append) | |
6550 | sv_catpvn(sv, (char *) buf, cnt); | |
6551 | else | |
6552 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 6553 | |
6554 | if (i != EOF && /* joy */ | |
6555 | (!rslen || | |
6556 | SvCUR(sv) < rslen || | |
3f7c398e | 6557 | memNE(SvPVX_const(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
6558 | { |
6559 | append = -1; | |
63e4d877 CS |
6560 | /* |
6561 | * If we're reading from a TTY and we get a short read, | |
6562 | * indicating that the user hit his EOF character, we need | |
6563 | * to notice it now, because if we try to read from the TTY | |
6564 | * again, the EOF condition will disappear. | |
6565 | * | |
6566 | * The comparison of cnt to sizeof(buf) is an optimization | |
6567 | * that prevents unnecessary calls to feof(). | |
6568 | * | |
6569 | * - jik 9/25/96 | |
6570 | */ | |
bb7a0f54 | 6571 | if (!(cnt < (I32)sizeof(buf) && PerlIO_eof(fp))) |
63e4d877 | 6572 | goto screamer2; |
79072805 | 6573 | } |
6edd2cd5 | 6574 | |
27da23d5 | 6575 | #ifdef USE_HEAP_INSTEAD_OF_STACK |
6edd2cd5 JH |
6576 | Safefree(buf); |
6577 | #endif | |
79072805 LW |
6578 | } |
6579 | ||
8bfdd7d9 | 6580 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 6581 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 6582 | i = PerlIO_getc(fp); |
79072805 | 6583 | if (i != '\n') { |
760ac839 | 6584 | PerlIO_ungetc(fp,i); |
79072805 LW |
6585 | break; |
6586 | } | |
6587 | } | |
6588 | } | |
c07a80fd | 6589 | |
efd8b2ba | 6590 | return_string_or_null: |
bd61b366 | 6591 | return (SvCUR(sv) - append) ? SvPVX(sv) : NULL; |
79072805 LW |
6592 | } |
6593 | ||
954c1994 GS |
6594 | /* |
6595 | =for apidoc sv_inc | |
6596 | ||
645c22ef DM |
6597 | Auto-increment of the value in the SV, doing string to numeric conversion |
6598 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6599 | |
6600 | =cut | |
6601 | */ | |
6602 | ||
79072805 | 6603 | void |
864dbfa3 | 6604 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 | 6605 | { |
97aff369 | 6606 | dVAR; |
79072805 | 6607 | register char *d; |
463ee0b2 | 6608 | int flags; |
79072805 LW |
6609 | |
6610 | if (!sv) | |
6611 | return; | |
5b295bef | 6612 | SvGETMAGIC(sv); |
ed6116ce | 6613 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6614 | if (SvIsCOW(sv)) |
6615 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6616 | if (SvREADONLY(sv)) { |
923e4eb5 | 6617 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 6618 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6619 | } |
a0d0e21e | 6620 | if (SvROK(sv)) { |
b5be31e9 | 6621 | IV i; |
9e7bc3e8 JD |
6622 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
6623 | return; | |
56431972 | 6624 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6625 | sv_unref(sv); |
6626 | sv_setiv(sv, i); | |
a0d0e21e | 6627 | } |
ed6116ce | 6628 | } |
8990e307 | 6629 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6630 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
6631 | /* It's (privately or publicly) a float, but not tested as an | |
6632 | integer, so test it to see. */ | |
d460ef45 | 6633 | (void) SvIV(sv); |
28e5dec8 JH |
6634 | flags = SvFLAGS(sv); |
6635 | } | |
6636 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
6637 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6638 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6639 | oops_its_int: |
59d8ce62 | 6640 | #endif |
25da4f38 IZ |
6641 | if (SvIsUV(sv)) { |
6642 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 6643 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
6644 | else |
6645 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 6646 | SvUV_set(sv, SvUVX(sv) + 1); |
25da4f38 IZ |
6647 | } else { |
6648 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 6649 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
6650 | else { |
6651 | (void)SvIOK_only(sv); | |
45977657 | 6652 | SvIV_set(sv, SvIVX(sv) + 1); |
1c846c1f | 6653 | } |
55497cff | 6654 | } |
79072805 LW |
6655 | return; |
6656 | } | |
28e5dec8 JH |
6657 | if (flags & SVp_NOK) { |
6658 | (void)SvNOK_only(sv); | |
9d6ce603 | 6659 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6660 | return; |
6661 | } | |
6662 | ||
3f7c398e | 6663 | if (!(flags & SVp_POK) || !*SvPVX_const(sv)) { |
28e5dec8 | 6664 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
f5282e15 | 6665 | sv_upgrade(sv, ((flags & SVTYPEMASK) > SVt_IV ? SVt_PVIV : SVt_IV)); |
28e5dec8 | 6666 | (void)SvIOK_only(sv); |
45977657 | 6667 | SvIV_set(sv, 1); |
79072805 LW |
6668 | return; |
6669 | } | |
463ee0b2 | 6670 | d = SvPVX(sv); |
79072805 LW |
6671 | while (isALPHA(*d)) d++; |
6672 | while (isDIGIT(*d)) d++; | |
6673 | if (*d) { | |
28e5dec8 | 6674 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 6675 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
6676 | warnings. Probably ought to make the sv_iv_please() that does |
6677 | the conversion if possible, and silently. */ | |
504618e9 | 6678 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6679 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6680 | /* Need to try really hard to see if it's an integer. | |
6681 | 9.22337203685478e+18 is an integer. | |
6682 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6683 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
6684 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
6685 | or we go insane. */ | |
d460ef45 | 6686 | |
28e5dec8 JH |
6687 | (void) sv_2iv(sv); |
6688 | if (SvIOK(sv)) | |
6689 | goto oops_its_int; | |
6690 | ||
6691 | /* sv_2iv *should* have made this an NV */ | |
6692 | if (flags & SVp_NOK) { | |
6693 | (void)SvNOK_only(sv); | |
9d6ce603 | 6694 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6695 | return; |
6696 | } | |
6697 | /* I don't think we can get here. Maybe I should assert this | |
6698 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6699 | Fall through. */ | |
6700 | #if defined(USE_LONG_DOUBLE) | |
6701 | 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", | |
3f7c398e | 6702 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 6703 | #else |
1779d84d | 6704 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"NVgf"\n", |
3f7c398e | 6705 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
6706 | #endif |
6707 | } | |
6708 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 6709 | sv_setnv(sv,Atof(SvPVX_const(sv)) + 1.0); |
79072805 LW |
6710 | return; |
6711 | } | |
6712 | d--; | |
3f7c398e | 6713 | while (d >= SvPVX_const(sv)) { |
79072805 LW |
6714 | if (isDIGIT(*d)) { |
6715 | if (++*d <= '9') | |
6716 | return; | |
6717 | *(d--) = '0'; | |
6718 | } | |
6719 | else { | |
9d116dd7 JH |
6720 | #ifdef EBCDIC |
6721 | /* MKS: The original code here died if letters weren't consecutive. | |
6722 | * at least it didn't have to worry about non-C locales. The | |
6723 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 6724 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
6725 | * [A-Za-z] are accepted by isALPHA in the C locale. |
6726 | */ | |
6727 | if (*d != 'z' && *d != 'Z') { | |
6728 | do { ++*d; } while (!isALPHA(*d)); | |
6729 | return; | |
6730 | } | |
6731 | *(d--) -= 'z' - 'a'; | |
6732 | #else | |
79072805 LW |
6733 | ++*d; |
6734 | if (isALPHA(*d)) | |
6735 | return; | |
6736 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 6737 | #endif |
79072805 LW |
6738 | } |
6739 | } | |
6740 | /* oh,oh, the number grew */ | |
6741 | SvGROW(sv, SvCUR(sv) + 2); | |
b162af07 | 6742 | SvCUR_set(sv, SvCUR(sv) + 1); |
3f7c398e | 6743 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX_const(sv); d--) |
79072805 LW |
6744 | *d = d[-1]; |
6745 | if (isDIGIT(d[1])) | |
6746 | *d = '1'; | |
6747 | else | |
6748 | *d = d[1]; | |
6749 | } | |
6750 | ||
954c1994 GS |
6751 | /* |
6752 | =for apidoc sv_dec | |
6753 | ||
645c22ef DM |
6754 | Auto-decrement of the value in the SV, doing string to numeric conversion |
6755 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6756 | |
6757 | =cut | |
6758 | */ | |
6759 | ||
79072805 | 6760 | void |
864dbfa3 | 6761 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 6762 | { |
97aff369 | 6763 | dVAR; |
463ee0b2 LW |
6764 | int flags; |
6765 | ||
79072805 LW |
6766 | if (!sv) |
6767 | return; | |
5b295bef | 6768 | SvGETMAGIC(sv); |
ed6116ce | 6769 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6770 | if (SvIsCOW(sv)) |
6771 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6772 | if (SvREADONLY(sv)) { |
923e4eb5 | 6773 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 6774 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6775 | } |
a0d0e21e | 6776 | if (SvROK(sv)) { |
b5be31e9 | 6777 | IV i; |
9e7bc3e8 JD |
6778 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
6779 | return; | |
56431972 | 6780 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6781 | sv_unref(sv); |
6782 | sv_setiv(sv, i); | |
a0d0e21e | 6783 | } |
ed6116ce | 6784 | } |
28e5dec8 JH |
6785 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
6786 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 6787 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6788 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
6789 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6790 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6791 | oops_its_int: |
59d8ce62 | 6792 | #endif |
25da4f38 IZ |
6793 | if (SvIsUV(sv)) { |
6794 | if (SvUVX(sv) == 0) { | |
6795 | (void)SvIOK_only(sv); | |
45977657 | 6796 | SvIV_set(sv, -1); |
25da4f38 IZ |
6797 | } |
6798 | else { | |
6799 | (void)SvIOK_only_UV(sv); | |
f4eee32f | 6800 | SvUV_set(sv, SvUVX(sv) - 1); |
1c846c1f | 6801 | } |
25da4f38 IZ |
6802 | } else { |
6803 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 6804 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
6805 | else { |
6806 | (void)SvIOK_only(sv); | |
45977657 | 6807 | SvIV_set(sv, SvIVX(sv) - 1); |
1c846c1f | 6808 | } |
55497cff | 6809 | } |
6810 | return; | |
6811 | } | |
28e5dec8 | 6812 | if (flags & SVp_NOK) { |
9d6ce603 | 6813 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
6814 | (void)SvNOK_only(sv); |
6815 | return; | |
6816 | } | |
8990e307 | 6817 | if (!(flags & SVp_POK)) { |
ef088171 NC |
6818 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
6819 | sv_upgrade(sv, ((flags & SVTYPEMASK) > SVt_IV) ? SVt_PVIV : SVt_IV); | |
6820 | SvIV_set(sv, -1); | |
6821 | (void)SvIOK_only(sv); | |
79072805 LW |
6822 | return; |
6823 | } | |
28e5dec8 JH |
6824 | #ifdef PERL_PRESERVE_IVUV |
6825 | { | |
504618e9 | 6826 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6827 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6828 | /* Need to try really hard to see if it's an integer. | |
6829 | 9.22337203685478e+18 is an integer. | |
6830 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6831 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
6832 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
6833 | or we go insane. */ | |
d460ef45 | 6834 | |
28e5dec8 JH |
6835 | (void) sv_2iv(sv); |
6836 | if (SvIOK(sv)) | |
6837 | goto oops_its_int; | |
6838 | ||
6839 | /* sv_2iv *should* have made this an NV */ | |
6840 | if (flags & SVp_NOK) { | |
6841 | (void)SvNOK_only(sv); | |
9d6ce603 | 6842 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
6843 | return; |
6844 | } | |
6845 | /* I don't think we can get here. Maybe I should assert this | |
6846 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6847 | Fall through. */ | |
6848 | #if defined(USE_LONG_DOUBLE) | |
6849 | 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", | |
3f7c398e | 6850 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 6851 | #else |
1779d84d | 6852 | DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"NVgf"\n", |
3f7c398e | 6853 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
6854 | #endif |
6855 | } | |
6856 | } | |
6857 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 6858 | sv_setnv(sv,Atof(SvPVX_const(sv)) - 1.0); /* punt */ |
79072805 LW |
6859 | } |
6860 | ||
954c1994 GS |
6861 | /* |
6862 | =for apidoc sv_mortalcopy | |
6863 | ||
645c22ef | 6864 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
6865 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
6866 | explicit call to FREETMPS, or by an implicit call at places such as | |
6867 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
6868 | |
6869 | =cut | |
6870 | */ | |
6871 | ||
79072805 LW |
6872 | /* Make a string that will exist for the duration of the expression |
6873 | * evaluation. Actually, it may have to last longer than that, but | |
6874 | * hopefully we won't free it until it has been assigned to a | |
6875 | * permanent location. */ | |
6876 | ||
6877 | SV * | |
864dbfa3 | 6878 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 6879 | { |
97aff369 | 6880 | dVAR; |
463ee0b2 | 6881 | register SV *sv; |
b881518d | 6882 | |
4561caa4 | 6883 | new_SV(sv); |
79072805 | 6884 | sv_setsv(sv,oldstr); |
677b06e3 GS |
6885 | EXTEND_MORTAL(1); |
6886 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
6887 | SvTEMP_on(sv); |
6888 | return sv; | |
6889 | } | |
6890 | ||
954c1994 GS |
6891 | /* |
6892 | =for apidoc sv_newmortal | |
6893 | ||
645c22ef | 6894 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
6895 | set to 1. It will be destroyed "soon", either by an explicit call to |
6896 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
6897 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
6898 | |
6899 | =cut | |
6900 | */ | |
6901 | ||
8990e307 | 6902 | SV * |
864dbfa3 | 6903 | Perl_sv_newmortal(pTHX) |
8990e307 | 6904 | { |
97aff369 | 6905 | dVAR; |
8990e307 LW |
6906 | register SV *sv; |
6907 | ||
4561caa4 | 6908 | new_SV(sv); |
8990e307 | 6909 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
6910 | EXTEND_MORTAL(1); |
6911 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
6912 | return sv; |
6913 | } | |
6914 | ||
954c1994 GS |
6915 | /* |
6916 | =for apidoc sv_2mortal | |
6917 | ||
d4236ebc DM |
6918 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
6919 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
6920 | statement boundaries. SvTEMP() is turned on which means that the SV's |
6921 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
6922 | and C<sv_mortalcopy>. | |
954c1994 GS |
6923 | |
6924 | =cut | |
6925 | */ | |
6926 | ||
79072805 | 6927 | SV * |
864dbfa3 | 6928 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 | 6929 | { |
27da23d5 | 6930 | dVAR; |
79072805 | 6931 | if (!sv) |
7a5b473e | 6932 | return NULL; |
d689ffdd | 6933 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 6934 | return sv; |
677b06e3 GS |
6935 | EXTEND_MORTAL(1); |
6936 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 6937 | SvTEMP_on(sv); |
79072805 LW |
6938 | return sv; |
6939 | } | |
6940 | ||
954c1994 GS |
6941 | /* |
6942 | =for apidoc newSVpv | |
6943 | ||
6944 | Creates a new SV and copies a string into it. The reference count for the | |
6945 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
6946 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
6947 | ||
6948 | =cut | |
6949 | */ | |
6950 | ||
79072805 | 6951 | SV * |
864dbfa3 | 6952 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 6953 | { |
97aff369 | 6954 | dVAR; |
463ee0b2 | 6955 | register SV *sv; |
79072805 | 6956 | |
4561caa4 | 6957 | new_SV(sv); |
ddfa59c7 | 6958 | sv_setpvn(sv, s, len || s == NULL ? len : strlen(s)); |
79072805 LW |
6959 | return sv; |
6960 | } | |
6961 | ||
954c1994 GS |
6962 | /* |
6963 | =for apidoc newSVpvn | |
6964 | ||
6965 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 6966 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 6967 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 6968 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
6969 | |
6970 | =cut | |
6971 | */ | |
6972 | ||
9da1e3b5 | 6973 | SV * |
864dbfa3 | 6974 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 | 6975 | { |
97aff369 | 6976 | dVAR; |
9da1e3b5 MUN |
6977 | register SV *sv; |
6978 | ||
6979 | new_SV(sv); | |
9da1e3b5 MUN |
6980 | sv_setpvn(sv,s,len); |
6981 | return sv; | |
6982 | } | |
6983 | ||
bd08039b NC |
6984 | |
6985 | /* | |
926f8064 | 6986 | =for apidoc newSVhek |
bd08039b NC |
6987 | |
6988 | Creates a new SV from the hash key structure. It will generate scalars that | |
5aaec2b4 NC |
6989 | point to the shared string table where possible. Returns a new (undefined) |
6990 | SV if the hek is NULL. | |
bd08039b NC |
6991 | |
6992 | =cut | |
6993 | */ | |
6994 | ||
6995 | SV * | |
c1b02ed8 | 6996 | Perl_newSVhek(pTHX_ const HEK *hek) |
bd08039b | 6997 | { |
97aff369 | 6998 | dVAR; |
5aaec2b4 NC |
6999 | if (!hek) { |
7000 | SV *sv; | |
7001 | ||
7002 | new_SV(sv); | |
7003 | return sv; | |
7004 | } | |
7005 | ||
bd08039b NC |
7006 | if (HEK_LEN(hek) == HEf_SVKEY) { |
7007 | return newSVsv(*(SV**)HEK_KEY(hek)); | |
7008 | } else { | |
7009 | const int flags = HEK_FLAGS(hek); | |
7010 | if (flags & HVhek_WASUTF8) { | |
7011 | /* Trouble :-) | |
7012 | Andreas would like keys he put in as utf8 to come back as utf8 | |
7013 | */ | |
7014 | STRLEN utf8_len = HEK_LEN(hek); | |
b64e5050 AL |
7015 | const U8 *as_utf8 = bytes_to_utf8 ((U8*)HEK_KEY(hek), &utf8_len); |
7016 | SV * const sv = newSVpvn ((const char*)as_utf8, utf8_len); | |
bd08039b NC |
7017 | |
7018 | SvUTF8_on (sv); | |
7019 | Safefree (as_utf8); /* bytes_to_utf8() allocates a new string */ | |
7020 | return sv; | |
45e34800 | 7021 | } else if (flags & (HVhek_REHASH|HVhek_UNSHARED)) { |
bd08039b NC |
7022 | /* We don't have a pointer to the hv, so we have to replicate the |
7023 | flag into every HEK. This hv is using custom a hasing | |
7024 | algorithm. Hence we can't return a shared string scalar, as | |
7025 | that would contain the (wrong) hash value, and might get passed | |
45e34800 NC |
7026 | into an hv routine with a regular hash. |
7027 | Similarly, a hash that isn't using shared hash keys has to have | |
7028 | the flag in every key so that we know not to try to call | |
7029 | share_hek_kek on it. */ | |
bd08039b | 7030 | |
b64e5050 | 7031 | SV * const sv = newSVpvn (HEK_KEY(hek), HEK_LEN(hek)); |
bd08039b NC |
7032 | if (HEK_UTF8(hek)) |
7033 | SvUTF8_on (sv); | |
7034 | return sv; | |
7035 | } | |
7036 | /* This will be overwhelminly the most common case. */ | |
409dfe77 NC |
7037 | { |
7038 | /* Inline most of newSVpvn_share(), because share_hek_hek() is far | |
7039 | more efficient than sharepvn(). */ | |
7040 | SV *sv; | |
7041 | ||
7042 | new_SV(sv); | |
7043 | sv_upgrade(sv, SVt_PV); | |
7044 | SvPV_set(sv, (char *)HEK_KEY(share_hek_hek(hek))); | |
7045 | SvCUR_set(sv, HEK_LEN(hek)); | |
7046 | SvLEN_set(sv, 0); | |
7047 | SvREADONLY_on(sv); | |
7048 | SvFAKE_on(sv); | |
7049 | SvPOK_on(sv); | |
7050 | if (HEK_UTF8(hek)) | |
7051 | SvUTF8_on(sv); | |
7052 | return sv; | |
7053 | } | |
bd08039b NC |
7054 | } |
7055 | } | |
7056 | ||
1c846c1f NIS |
7057 | /* |
7058 | =for apidoc newSVpvn_share | |
7059 | ||
3f7c398e | 7060 | Creates a new SV with its SvPVX_const pointing to a shared string in the string |
645c22ef | 7061 | table. If the string does not already exist in the table, it is created |
758fcfc1 VP |
7062 | first. Turns on READONLY and FAKE. If the C<hash> parameter is non-zero, that |
7063 | value is used; otherwise the hash is computed. The string's hash can be later | |
7064 | be retrieved from the SV with the C<SvSHARED_HASH()> macro. The idea here is | |
7065 | that as the string table is used for shared hash keys these strings will have | |
7066 | SvPVX_const == HeKEY and hash lookup will avoid string compare. | |
1c846c1f NIS |
7067 | |
7068 | =cut | |
7069 | */ | |
7070 | ||
7071 | SV * | |
c3654f1a | 7072 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f | 7073 | { |
97aff369 | 7074 | dVAR; |
1c846c1f | 7075 | register SV *sv; |
c3654f1a | 7076 | bool is_utf8 = FALSE; |
a51caccf NC |
7077 | const char *const orig_src = src; |
7078 | ||
c3654f1a | 7079 | if (len < 0) { |
77caf834 | 7080 | STRLEN tmplen = -len; |
c3654f1a | 7081 | is_utf8 = TRUE; |
75a54232 | 7082 | /* See the note in hv.c:hv_fetch() --jhi */ |
e1ec3a88 | 7083 | src = (char*)bytes_from_utf8((const U8*)src, &tmplen, &is_utf8); |
75a54232 JH |
7084 | len = tmplen; |
7085 | } | |
1c846c1f | 7086 | if (!hash) |
5afd6d42 | 7087 | PERL_HASH(hash, src, len); |
1c846c1f | 7088 | new_SV(sv); |
bdd68bc3 | 7089 | sv_upgrade(sv, SVt_PV); |
f880fe2f | 7090 | SvPV_set(sv, sharepvn(src, is_utf8?-len:len, hash)); |
b162af07 | 7091 | SvCUR_set(sv, len); |
b162af07 | 7092 | SvLEN_set(sv, 0); |
1c846c1f NIS |
7093 | SvREADONLY_on(sv); |
7094 | SvFAKE_on(sv); | |
7095 | SvPOK_on(sv); | |
c3654f1a IH |
7096 | if (is_utf8) |
7097 | SvUTF8_on(sv); | |
a51caccf NC |
7098 | if (src != orig_src) |
7099 | Safefree(src); | |
1c846c1f NIS |
7100 | return sv; |
7101 | } | |
7102 | ||
645c22ef | 7103 | |
cea2e8a9 | 7104 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7105 | |
7106 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7107 | * version of the main function, (which may itself be aliased to us). | |
7108 | * Don't access this version directly. | |
7109 | */ | |
7110 | ||
46fc3d4c | 7111 | SV * |
cea2e8a9 | 7112 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7113 | { |
cea2e8a9 | 7114 | dTHX; |
46fc3d4c | 7115 | register SV *sv; |
7116 | va_list args; | |
46fc3d4c | 7117 | va_start(args, pat); |
c5be433b | 7118 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7119 | va_end(args); |
7120 | return sv; | |
7121 | } | |
cea2e8a9 | 7122 | #endif |
46fc3d4c | 7123 | |
954c1994 GS |
7124 | /* |
7125 | =for apidoc newSVpvf | |
7126 | ||
645c22ef | 7127 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7128 | C<sprintf>. |
7129 | ||
7130 | =cut | |
7131 | */ | |
7132 | ||
cea2e8a9 GS |
7133 | SV * |
7134 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7135 | { | |
7136 | register SV *sv; | |
7137 | va_list args; | |
cea2e8a9 | 7138 | va_start(args, pat); |
c5be433b | 7139 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7140 | va_end(args); |
7141 | return sv; | |
7142 | } | |
46fc3d4c | 7143 | |
645c22ef DM |
7144 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7145 | ||
79072805 | 7146 | SV * |
c5be433b GS |
7147 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7148 | { | |
97aff369 | 7149 | dVAR; |
c5be433b GS |
7150 | register SV *sv; |
7151 | new_SV(sv); | |
4608196e | 7152 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
c5be433b GS |
7153 | return sv; |
7154 | } | |
7155 | ||
954c1994 GS |
7156 | /* |
7157 | =for apidoc newSVnv | |
7158 | ||
7159 | Creates a new SV and copies a floating point value into it. | |
7160 | The reference count for the SV is set to 1. | |
7161 | ||
7162 | =cut | |
7163 | */ | |
7164 | ||
c5be433b | 7165 | SV * |
65202027 | 7166 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7167 | { |
97aff369 | 7168 | dVAR; |
463ee0b2 | 7169 | register SV *sv; |
79072805 | 7170 | |
4561caa4 | 7171 | new_SV(sv); |
79072805 LW |
7172 | sv_setnv(sv,n); |
7173 | return sv; | |
7174 | } | |
7175 | ||
954c1994 GS |
7176 | /* |
7177 | =for apidoc newSViv | |
7178 | ||
7179 | Creates a new SV and copies an integer into it. The reference count for the | |
7180 | SV is set to 1. | |
7181 | ||
7182 | =cut | |
7183 | */ | |
7184 | ||
79072805 | 7185 | SV * |
864dbfa3 | 7186 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7187 | { |
97aff369 | 7188 | dVAR; |
463ee0b2 | 7189 | register SV *sv; |
79072805 | 7190 | |
4561caa4 | 7191 | new_SV(sv); |
79072805 LW |
7192 | sv_setiv(sv,i); |
7193 | return sv; | |
7194 | } | |
7195 | ||
954c1994 | 7196 | /* |
1a3327fb JH |
7197 | =for apidoc newSVuv |
7198 | ||
7199 | Creates a new SV and copies an unsigned integer into it. | |
7200 | The reference count for the SV is set to 1. | |
7201 | ||
7202 | =cut | |
7203 | */ | |
7204 | ||
7205 | SV * | |
7206 | Perl_newSVuv(pTHX_ UV u) | |
7207 | { | |
97aff369 | 7208 | dVAR; |
1a3327fb JH |
7209 | register SV *sv; |
7210 | ||
7211 | new_SV(sv); | |
7212 | sv_setuv(sv,u); | |
7213 | return sv; | |
7214 | } | |
7215 | ||
7216 | /* | |
b9f83d2f NC |
7217 | =for apidoc newSV_type |
7218 | ||
7219 | Creates a new SV, of the type specificied. The reference count for the new SV | |
7220 | is set to 1. | |
7221 | ||
7222 | =cut | |
7223 | */ | |
7224 | ||
7225 | SV * | |
7226 | Perl_newSV_type(pTHX_ svtype type) | |
7227 | { | |
7228 | register SV *sv; | |
7229 | ||
7230 | new_SV(sv); | |
7231 | sv_upgrade(sv, type); | |
7232 | return sv; | |
7233 | } | |
7234 | ||
7235 | /* | |
954c1994 GS |
7236 | =for apidoc newRV_noinc |
7237 | ||
7238 | Creates an RV wrapper for an SV. The reference count for the original | |
7239 | SV is B<not> incremented. | |
7240 | ||
7241 | =cut | |
7242 | */ | |
7243 | ||
2304df62 | 7244 | SV * |
864dbfa3 | 7245 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 | 7246 | { |
97aff369 | 7247 | dVAR; |
b9f83d2f | 7248 | register SV *sv = newSV_type(SVt_RV); |
76e3520e | 7249 | SvTEMP_off(tmpRef); |
b162af07 | 7250 | SvRV_set(sv, tmpRef); |
2304df62 | 7251 | SvROK_on(sv); |
2304df62 AD |
7252 | return sv; |
7253 | } | |
7254 | ||
ff276b08 | 7255 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7256 | * newRV_inc is in fact #defined to newRV in sv.h |
7257 | */ | |
7258 | ||
5f05dabc | 7259 | SV * |
7f466ec7 | 7260 | Perl_newRV(pTHX_ SV *sv) |
5f05dabc | 7261 | { |
97aff369 | 7262 | dVAR; |
7f466ec7 | 7263 | return newRV_noinc(SvREFCNT_inc_simple_NN(sv)); |
5f05dabc | 7264 | } |
5f05dabc | 7265 | |
954c1994 GS |
7266 | /* |
7267 | =for apidoc newSVsv | |
7268 | ||
7269 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7270 | (Uses C<sv_setsv>). |
954c1994 GS |
7271 | |
7272 | =cut | |
7273 | */ | |
7274 | ||
79072805 | 7275 | SV * |
864dbfa3 | 7276 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7277 | { |
97aff369 | 7278 | dVAR; |
463ee0b2 | 7279 | register SV *sv; |
79072805 LW |
7280 | |
7281 | if (!old) | |
7a5b473e | 7282 | return NULL; |
8990e307 | 7283 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7284 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7285 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
a0714e2c | 7286 | return NULL; |
79072805 | 7287 | } |
4561caa4 | 7288 | new_SV(sv); |
e90aabeb NC |
7289 | /* SV_GMAGIC is the default for sv_setv() |
7290 | SV_NOSTEAL prevents TEMP buffers being, well, stolen, and saves games | |
7291 | with SvTEMP_off and SvTEMP_on round a call to sv_setsv. */ | |
7292 | sv_setsv_flags(sv, old, SV_GMAGIC | SV_NOSTEAL); | |
463ee0b2 | 7293 | return sv; |
79072805 LW |
7294 | } |
7295 | ||
645c22ef DM |
7296 | /* |
7297 | =for apidoc sv_reset | |
7298 | ||
7299 | Underlying implementation for the C<reset> Perl function. | |
7300 | Note that the perl-level function is vaguely deprecated. | |
7301 | ||
7302 | =cut | |
7303 | */ | |
7304 | ||
79072805 | 7305 | void |
e1ec3a88 | 7306 | Perl_sv_reset(pTHX_ register const char *s, HV *stash) |
79072805 | 7307 | { |
27da23d5 | 7308 | dVAR; |
4802d5d7 | 7309 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7310 | |
49d8d3a1 MB |
7311 | if (!stash) |
7312 | return; | |
7313 | ||
79072805 | 7314 | if (!*s) { /* reset ?? searches */ |
aec46f14 | 7315 | MAGIC * const mg = mg_find((SV *)stash, PERL_MAGIC_symtab); |
8d2f4536 | 7316 | if (mg) { |
c2b1997a NC |
7317 | const U32 count = mg->mg_len / sizeof(PMOP**); |
7318 | PMOP **pmp = (PMOP**) mg->mg_ptr; | |
7319 | PMOP *const *const end = pmp + count; | |
7320 | ||
7321 | while (pmp < end) { | |
c737faaf | 7322 | #ifdef USE_ITHREADS |
c2b1997a | 7323 | SvREADONLY_off(PL_regex_pad[(*pmp)->op_pmoffset]); |
c737faaf | 7324 | #else |
c2b1997a | 7325 | (*pmp)->op_pmflags &= ~PMf_USED; |
c737faaf | 7326 | #endif |
c2b1997a | 7327 | ++pmp; |
8d2f4536 | 7328 | } |
79072805 LW |
7329 | } |
7330 | return; | |
7331 | } | |
7332 | ||
7333 | /* reset variables */ | |
7334 | ||
7335 | if (!HvARRAY(stash)) | |
7336 | return; | |
463ee0b2 LW |
7337 | |
7338 | Zero(todo, 256, char); | |
79072805 | 7339 | while (*s) { |
b464bac0 AL |
7340 | I32 max; |
7341 | I32 i = (unsigned char)*s; | |
79072805 LW |
7342 | if (s[1] == '-') { |
7343 | s += 2; | |
7344 | } | |
4802d5d7 | 7345 | max = (unsigned char)*s++; |
79072805 | 7346 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7347 | todo[i] = 1; |
7348 | } | |
a0d0e21e | 7349 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
b464bac0 | 7350 | HE *entry; |
79072805 | 7351 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7352 | entry; |
7353 | entry = HeNEXT(entry)) | |
7354 | { | |
b464bac0 AL |
7355 | register GV *gv; |
7356 | register SV *sv; | |
7357 | ||
1edc1566 | 7358 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7359 | continue; |
1edc1566 | 7360 | gv = (GV*)HeVAL(entry); |
79072805 | 7361 | sv = GvSV(gv); |
e203899d NC |
7362 | if (sv) { |
7363 | if (SvTHINKFIRST(sv)) { | |
7364 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7365 | sv_unref(sv); | |
7366 | /* XXX Is this continue a bug? Why should THINKFIRST | |
7367 | exempt us from resetting arrays and hashes? */ | |
7368 | continue; | |
7369 | } | |
7370 | SvOK_off(sv); | |
7371 | if (SvTYPE(sv) >= SVt_PV) { | |
7372 | SvCUR_set(sv, 0); | |
bd61b366 | 7373 | if (SvPVX_const(sv) != NULL) |
e203899d NC |
7374 | *SvPVX(sv) = '\0'; |
7375 | SvTAINT(sv); | |
7376 | } | |
79072805 LW |
7377 | } |
7378 | if (GvAV(gv)) { | |
7379 | av_clear(GvAV(gv)); | |
7380 | } | |
bfcb3514 | 7381 | if (GvHV(gv) && !HvNAME_get(GvHV(gv))) { |
b0269e46 AB |
7382 | #if defined(VMS) |
7383 | Perl_die(aTHX_ "Can't reset %%ENV on this system"); | |
7384 | #else /* ! VMS */ | |
463ee0b2 | 7385 | hv_clear(GvHV(gv)); |
b0269e46 AB |
7386 | # if defined(USE_ENVIRON_ARRAY) |
7387 | if (gv == PL_envgv) | |
7388 | my_clearenv(); | |
7389 | # endif /* USE_ENVIRON_ARRAY */ | |
7390 | #endif /* VMS */ | |
79072805 LW |
7391 | } |
7392 | } | |
7393 | } | |
7394 | } | |
7395 | } | |
7396 | ||
645c22ef DM |
7397 | /* |
7398 | =for apidoc sv_2io | |
7399 | ||
7400 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7401 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7402 | named after the PV if we're a string. | |
7403 | ||
7404 | =cut | |
7405 | */ | |
7406 | ||
46fc3d4c | 7407 | IO* |
864dbfa3 | 7408 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7409 | { |
7410 | IO* io; | |
7411 | GV* gv; | |
7412 | ||
7413 | switch (SvTYPE(sv)) { | |
7414 | case SVt_PVIO: | |
7415 | io = (IO*)sv; | |
7416 | break; | |
7417 | case SVt_PVGV: | |
7418 | gv = (GV*)sv; | |
7419 | io = GvIO(gv); | |
7420 | if (!io) | |
cea2e8a9 | 7421 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 7422 | break; |
7423 | default: | |
7424 | if (!SvOK(sv)) | |
cea2e8a9 | 7425 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 7426 | if (SvROK(sv)) |
7427 | return sv_2io(SvRV(sv)); | |
f776e3cd | 7428 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
46fc3d4c | 7429 | if (gv) |
7430 | io = GvIO(gv); | |
7431 | else | |
7432 | io = 0; | |
7433 | if (!io) | |
be2597df | 7434 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, SVfARG(sv)); |
46fc3d4c | 7435 | break; |
7436 | } | |
7437 | return io; | |
7438 | } | |
7439 | ||
645c22ef DM |
7440 | /* |
7441 | =for apidoc sv_2cv | |
7442 | ||
7443 | Using various gambits, try to get a CV from an SV; in addition, try if | |
7444 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
f2c0649b | 7445 | The flags in C<lref> are passed to sv_fetchsv. |
645c22ef DM |
7446 | |
7447 | =cut | |
7448 | */ | |
7449 | ||
79072805 | 7450 | CV * |
864dbfa3 | 7451 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 7452 | { |
27da23d5 | 7453 | dVAR; |
a0714e2c | 7454 | GV *gv = NULL; |
601f1833 | 7455 | CV *cv = NULL; |
79072805 | 7456 | |
85dec29a NC |
7457 | if (!sv) { |
7458 | *st = NULL; | |
7459 | *gvp = NULL; | |
7460 | return NULL; | |
7461 | } | |
79072805 | 7462 | switch (SvTYPE(sv)) { |
79072805 LW |
7463 | case SVt_PVCV: |
7464 | *st = CvSTASH(sv); | |
a0714e2c | 7465 | *gvp = NULL; |
79072805 LW |
7466 | return (CV*)sv; |
7467 | case SVt_PVHV: | |
7468 | case SVt_PVAV: | |
ef58ba18 | 7469 | *st = NULL; |
a0714e2c | 7470 | *gvp = NULL; |
601f1833 | 7471 | return NULL; |
8990e307 LW |
7472 | case SVt_PVGV: |
7473 | gv = (GV*)sv; | |
a0d0e21e | 7474 | *gvp = gv; |
8990e307 LW |
7475 | *st = GvESTASH(gv); |
7476 | goto fix_gv; | |
7477 | ||
79072805 | 7478 | default: |
5b295bef | 7479 | SvGETMAGIC(sv); |
a0d0e21e | 7480 | if (SvROK(sv)) { |
823a54a3 | 7481 | SV * const *sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
f5284f61 IZ |
7482 | tryAMAGICunDEREF(to_cv); |
7483 | ||
62f274bf GS |
7484 | sv = SvRV(sv); |
7485 | if (SvTYPE(sv) == SVt_PVCV) { | |
7486 | cv = (CV*)sv; | |
a0714e2c | 7487 | *gvp = NULL; |
62f274bf GS |
7488 | *st = CvSTASH(cv); |
7489 | return cv; | |
7490 | } | |
7491 | else if(isGV(sv)) | |
7492 | gv = (GV*)sv; | |
7493 | else | |
cea2e8a9 | 7494 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 7495 | } |
62f274bf | 7496 | else if (isGV(sv)) |
79072805 LW |
7497 | gv = (GV*)sv; |
7498 | else | |
7a5fd60d | 7499 | gv = gv_fetchsv(sv, lref, SVt_PVCV); |
79072805 | 7500 | *gvp = gv; |
ef58ba18 NC |
7501 | if (!gv) { |
7502 | *st = NULL; | |
601f1833 | 7503 | return NULL; |
ef58ba18 | 7504 | } |
e26df76a NC |
7505 | /* Some flags to gv_fetchsv mean don't really create the GV */ |
7506 | if (SvTYPE(gv) != SVt_PVGV) { | |
7507 | *st = NULL; | |
7508 | return NULL; | |
7509 | } | |
79072805 | 7510 | *st = GvESTASH(gv); |
8990e307 | 7511 | fix_gv: |
8ebc5c01 | 7512 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 7513 | SV *tmpsv; |
748a9306 | 7514 | ENTER; |
561b68a9 | 7515 | tmpsv = newSV(0); |
bd61b366 | 7516 | gv_efullname3(tmpsv, gv, NULL); |
f6ec51f7 GS |
7517 | /* XXX this is probably not what they think they're getting. |
7518 | * It has the same effect as "sub name;", i.e. just a forward | |
7519 | * declaration! */ | |
774d564b | 7520 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 | 7521 | newSVOP(OP_CONST, 0, tmpsv), |
5f66b61c | 7522 | NULL, NULL); |
748a9306 | 7523 | LEAVE; |
8ebc5c01 | 7524 | if (!GvCVu(gv)) |
35c1215d | 7525 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
be2597df | 7526 | SVfARG(sv)); |
8990e307 | 7527 | } |
8ebc5c01 | 7528 | return GvCVu(gv); |
79072805 LW |
7529 | } |
7530 | } | |
7531 | ||
c461cf8f JH |
7532 | /* |
7533 | =for apidoc sv_true | |
7534 | ||
7535 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
7536 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
7537 | instead use an in-line version. | |
c461cf8f JH |
7538 | |
7539 | =cut | |
7540 | */ | |
7541 | ||
79072805 | 7542 | I32 |
864dbfa3 | 7543 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 7544 | { |
8990e307 LW |
7545 | if (!sv) |
7546 | return 0; | |
79072805 | 7547 | if (SvPOK(sv)) { |
823a54a3 AL |
7548 | register const XPV* const tXpv = (XPV*)SvANY(sv); |
7549 | if (tXpv && | |
c2f1de04 | 7550 | (tXpv->xpv_cur > 1 || |
339049b0 | 7551 | (tXpv->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
79072805 LW |
7552 | return 1; |
7553 | else | |
7554 | return 0; | |
7555 | } | |
7556 | else { | |
7557 | if (SvIOK(sv)) | |
463ee0b2 | 7558 | return SvIVX(sv) != 0; |
79072805 LW |
7559 | else { |
7560 | if (SvNOK(sv)) | |
463ee0b2 | 7561 | return SvNVX(sv) != 0.0; |
79072805 | 7562 | else |
463ee0b2 | 7563 | return sv_2bool(sv); |
79072805 LW |
7564 | } |
7565 | } | |
7566 | } | |
79072805 | 7567 | |
645c22ef | 7568 | /* |
c461cf8f JH |
7569 | =for apidoc sv_pvn_force |
7570 | ||
7571 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
7572 | A private implementation of the C<SvPV_force> macro for compilers which |
7573 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 7574 | |
8d6d96c1 HS |
7575 | =for apidoc sv_pvn_force_flags |
7576 | ||
7577 | Get a sensible string out of the SV somehow. | |
7578 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
7579 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
7580 | implemented in terms of this function. | |
645c22ef DM |
7581 | You normally want to use the various wrapper macros instead: see |
7582 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
7583 | |
7584 | =cut | |
7585 | */ | |
7586 | ||
7587 | char * | |
7588 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
7589 | { | |
97aff369 | 7590 | dVAR; |
6fc92669 | 7591 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 7592 | sv_force_normal_flags(sv, 0); |
1c846c1f | 7593 | |
a0d0e21e | 7594 | if (SvPOK(sv)) { |
13c5b33c NC |
7595 | if (lp) |
7596 | *lp = SvCUR(sv); | |
a0d0e21e LW |
7597 | } |
7598 | else { | |
a3b680e6 | 7599 | char *s; |
13c5b33c NC |
7600 | STRLEN len; |
7601 | ||
4d84ee25 | 7602 | if (SvREADONLY(sv) && !(flags & SV_MUTABLE_RETURN)) { |
b64e5050 | 7603 | const char * const ref = sv_reftype(sv,0); |
4d84ee25 NC |
7604 | if (PL_op) |
7605 | Perl_croak(aTHX_ "Can't coerce readonly %s to string in %s", | |
b64e5050 | 7606 | ref, OP_NAME(PL_op)); |
4d84ee25 | 7607 | else |
b64e5050 | 7608 | Perl_croak(aTHX_ "Can't coerce readonly %s to string", ref); |
4d84ee25 | 7609 | } |
b64e5050 | 7610 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) |
cea2e8a9 | 7611 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 7612 | OP_NAME(PL_op)); |
b64e5050 | 7613 | s = sv_2pv_flags(sv, &len, flags); |
13c5b33c NC |
7614 | if (lp) |
7615 | *lp = len; | |
7616 | ||
3f7c398e | 7617 | if (s != SvPVX_const(sv)) { /* Almost, but not quite, sv_setpvn() */ |
a0d0e21e LW |
7618 | if (SvROK(sv)) |
7619 | sv_unref(sv); | |
862a34c6 | 7620 | SvUPGRADE(sv, SVt_PV); /* Never FALSE */ |
a0d0e21e | 7621 | SvGROW(sv, len + 1); |
706aa1c9 | 7622 | Move(s,SvPVX(sv),len,char); |
a0d0e21e | 7623 | SvCUR_set(sv, len); |
97a130b8 | 7624 | SvPVX(sv)[len] = '\0'; |
a0d0e21e LW |
7625 | } |
7626 | if (!SvPOK(sv)) { | |
7627 | SvPOK_on(sv); /* validate pointer */ | |
7628 | SvTAINT(sv); | |
1d7c1841 | 7629 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 7630 | PTR2UV(sv),SvPVX_const(sv))); |
a0d0e21e LW |
7631 | } |
7632 | } | |
4d84ee25 | 7633 | return SvPVX_mutable(sv); |
a0d0e21e LW |
7634 | } |
7635 | ||
645c22ef | 7636 | /* |
645c22ef DM |
7637 | =for apidoc sv_pvbyten_force |
7638 | ||
0feed65a | 7639 | The backend for the C<SvPVbytex_force> macro. Always use the macro instead. |
645c22ef DM |
7640 | |
7641 | =cut | |
7642 | */ | |
7643 | ||
7340a771 GS |
7644 | char * |
7645 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
7646 | { | |
46ec2f14 | 7647 | sv_pvn_force(sv,lp); |
ffebcc3e | 7648 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
7649 | *lp = SvCUR(sv); |
7650 | return SvPVX(sv); | |
7340a771 GS |
7651 | } |
7652 | ||
645c22ef | 7653 | /* |
c461cf8f JH |
7654 | =for apidoc sv_pvutf8n_force |
7655 | ||
0feed65a | 7656 | The backend for the C<SvPVutf8x_force> macro. Always use the macro instead. |
c461cf8f JH |
7657 | |
7658 | =cut | |
7659 | */ | |
7660 | ||
7340a771 GS |
7661 | char * |
7662 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
7663 | { | |
46ec2f14 | 7664 | sv_pvn_force(sv,lp); |
560a288e | 7665 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
7666 | *lp = SvCUR(sv); |
7667 | return SvPVX(sv); | |
7340a771 GS |
7668 | } |
7669 | ||
c461cf8f JH |
7670 | /* |
7671 | =for apidoc sv_reftype | |
7672 | ||
7673 | Returns a string describing what the SV is a reference to. | |
7674 | ||
7675 | =cut | |
7676 | */ | |
7677 | ||
2b388283 | 7678 | const char * |
bfed75c6 | 7679 | Perl_sv_reftype(pTHX_ const SV *sv, int ob) |
a0d0e21e | 7680 | { |
07409e01 NC |
7681 | /* The fact that I don't need to downcast to char * everywhere, only in ?: |
7682 | inside return suggests a const propagation bug in g++. */ | |
c86bf373 | 7683 | if (ob && SvOBJECT(sv)) { |
1b6737cc | 7684 | char * const name = HvNAME_get(SvSTASH(sv)); |
07409e01 | 7685 | return name ? name : (char *) "__ANON__"; |
c86bf373 | 7686 | } |
a0d0e21e LW |
7687 | else { |
7688 | switch (SvTYPE(sv)) { | |
7689 | case SVt_NULL: | |
7690 | case SVt_IV: | |
7691 | case SVt_NV: | |
7692 | case SVt_RV: | |
7693 | case SVt_PV: | |
7694 | case SVt_PVIV: | |
7695 | case SVt_PVNV: | |
7696 | case SVt_PVMG: | |
1cb0ed9b | 7697 | if (SvVOK(sv)) |
439cb1c4 | 7698 | return "VSTRING"; |
a0d0e21e LW |
7699 | if (SvROK(sv)) |
7700 | return "REF"; | |
7701 | else | |
7702 | return "SCALAR"; | |
1cb0ed9b | 7703 | |
07409e01 | 7704 | case SVt_PVLV: return (char *) (SvROK(sv) ? "REF" |
be65207d DM |
7705 | /* tied lvalues should appear to be |
7706 | * scalars for backwards compatitbility */ | |
7707 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
07409e01 | 7708 | ? "SCALAR" : "LVALUE"); |
a0d0e21e LW |
7709 | case SVt_PVAV: return "ARRAY"; |
7710 | case SVt_PVHV: return "HASH"; | |
7711 | case SVt_PVCV: return "CODE"; | |
7712 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 7713 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 7714 | case SVt_PVIO: return "IO"; |
cecf5685 | 7715 | case SVt_BIND: return "BIND"; |
a0d0e21e LW |
7716 | default: return "UNKNOWN"; |
7717 | } | |
7718 | } | |
7719 | } | |
7720 | ||
954c1994 GS |
7721 | /* |
7722 | =for apidoc sv_isobject | |
7723 | ||
7724 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
7725 | object. If the SV is not an RV, or if the object is not blessed, then this | |
7726 | will return false. | |
7727 | ||
7728 | =cut | |
7729 | */ | |
7730 | ||
463ee0b2 | 7731 | int |
864dbfa3 | 7732 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 7733 | { |
68dc0745 | 7734 | if (!sv) |
7735 | return 0; | |
5b295bef | 7736 | SvGETMAGIC(sv); |
85e6fe83 LW |
7737 | if (!SvROK(sv)) |
7738 | return 0; | |
7739 | sv = (SV*)SvRV(sv); | |
7740 | if (!SvOBJECT(sv)) | |
7741 | return 0; | |
7742 | return 1; | |
7743 | } | |
7744 | ||
954c1994 GS |
7745 | /* |
7746 | =for apidoc sv_isa | |
7747 | ||
7748 | Returns a boolean indicating whether the SV is blessed into the specified | |
7749 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
7750 | an inheritance relationship. | |
7751 | ||
7752 | =cut | |
7753 | */ | |
7754 | ||
85e6fe83 | 7755 | int |
864dbfa3 | 7756 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 7757 | { |
bfcb3514 | 7758 | const char *hvname; |
68dc0745 | 7759 | if (!sv) |
7760 | return 0; | |
5b295bef | 7761 | SvGETMAGIC(sv); |
ed6116ce | 7762 | if (!SvROK(sv)) |
463ee0b2 | 7763 | return 0; |
ed6116ce LW |
7764 | sv = (SV*)SvRV(sv); |
7765 | if (!SvOBJECT(sv)) | |
463ee0b2 | 7766 | return 0; |
bfcb3514 NC |
7767 | hvname = HvNAME_get(SvSTASH(sv)); |
7768 | if (!hvname) | |
e27ad1f2 | 7769 | return 0; |
463ee0b2 | 7770 | |
bfcb3514 | 7771 | return strEQ(hvname, name); |
463ee0b2 LW |
7772 | } |
7773 | ||
954c1994 GS |
7774 | /* |
7775 | =for apidoc newSVrv | |
7776 | ||
7777 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
7778 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
7779 | be blessed in the specified package. The new SV is returned and its | |
7780 | reference count is 1. | |
7781 | ||
7782 | =cut | |
7783 | */ | |
7784 | ||
463ee0b2 | 7785 | SV* |
864dbfa3 | 7786 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 7787 | { |
97aff369 | 7788 | dVAR; |
463ee0b2 LW |
7789 | SV *sv; |
7790 | ||
4561caa4 | 7791 | new_SV(sv); |
51cf62d8 | 7792 | |
765f542d | 7793 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
52944de8 | 7794 | (void)SvAMAGIC_off(rv); |
51cf62d8 | 7795 | |
0199fce9 | 7796 | if (SvTYPE(rv) >= SVt_PVMG) { |
a3b680e6 | 7797 | const U32 refcnt = SvREFCNT(rv); |
0199fce9 JD |
7798 | SvREFCNT(rv) = 0; |
7799 | sv_clear(rv); | |
7800 | SvFLAGS(rv) = 0; | |
7801 | SvREFCNT(rv) = refcnt; | |
0199fce9 | 7802 | |
dc5494d2 NC |
7803 | sv_upgrade(rv, SVt_RV); |
7804 | } else if (SvROK(rv)) { | |
7805 | SvREFCNT_dec(SvRV(rv)); | |
7806 | } else if (SvTYPE(rv) < SVt_RV) | |
0199fce9 JD |
7807 | sv_upgrade(rv, SVt_RV); |
7808 | else if (SvTYPE(rv) > SVt_RV) { | |
8bd4d4c5 | 7809 | SvPV_free(rv); |
0199fce9 JD |
7810 | SvCUR_set(rv, 0); |
7811 | SvLEN_set(rv, 0); | |
7812 | } | |
51cf62d8 | 7813 | |
0c34ef67 | 7814 | SvOK_off(rv); |
b162af07 | 7815 | SvRV_set(rv, sv); |
ed6116ce | 7816 | SvROK_on(rv); |
463ee0b2 | 7817 | |
a0d0e21e | 7818 | if (classname) { |
da51bb9b | 7819 | HV* const stash = gv_stashpv(classname, GV_ADD); |
a0d0e21e LW |
7820 | (void)sv_bless(rv, stash); |
7821 | } | |
7822 | return sv; | |
7823 | } | |
7824 | ||
954c1994 GS |
7825 | /* |
7826 | =for apidoc sv_setref_pv | |
7827 | ||
7828 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
7829 | argument will be upgraded to an RV. That RV will be modified to point to | |
7830 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
7831 | into the SV. The C<classname> argument indicates the package for the | |
bd61b366 | 7832 | blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV |
d34c2299 | 7833 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7834 | |
7835 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
7836 | objects will become corrupted by the pointer copy process. | |
7837 | ||
7838 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
7839 | ||
7840 | =cut | |
7841 | */ | |
7842 | ||
a0d0e21e | 7843 | SV* |
864dbfa3 | 7844 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 7845 | { |
97aff369 | 7846 | dVAR; |
189b2af5 | 7847 | if (!pv) { |
3280af22 | 7848 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
7849 | SvSETMAGIC(rv); |
7850 | } | |
a0d0e21e | 7851 | else |
56431972 | 7852 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
7853 | return rv; |
7854 | } | |
7855 | ||
954c1994 GS |
7856 | /* |
7857 | =for apidoc sv_setref_iv | |
7858 | ||
7859 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
7860 | argument will be upgraded to an RV. That RV will be modified to point to | |
7861 | the new SV. The C<classname> argument indicates the package for the | |
bd61b366 | 7862 | blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV |
d34c2299 | 7863 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7864 | |
7865 | =cut | |
7866 | */ | |
7867 | ||
a0d0e21e | 7868 | SV* |
864dbfa3 | 7869 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
7870 | { |
7871 | sv_setiv(newSVrv(rv,classname), iv); | |
7872 | return rv; | |
7873 | } | |
7874 | ||
954c1994 | 7875 | /* |
e1c57cef JH |
7876 | =for apidoc sv_setref_uv |
7877 | ||
7878 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
7879 | argument will be upgraded to an RV. That RV will be modified to point to | |
7880 | the new SV. The C<classname> argument indicates the package for the | |
bd61b366 | 7881 | blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV |
d34c2299 | 7882 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
7883 | |
7884 | =cut | |
7885 | */ | |
7886 | ||
7887 | SV* | |
7888 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
7889 | { | |
7890 | sv_setuv(newSVrv(rv,classname), uv); | |
7891 | return rv; | |
7892 | } | |
7893 | ||
7894 | /* | |
954c1994 GS |
7895 | =for apidoc sv_setref_nv |
7896 | ||
7897 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
7898 | argument will be upgraded to an RV. That RV will be modified to point to | |
7899 | the new SV. The C<classname> argument indicates the package for the | |
bd61b366 | 7900 | blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV |
d34c2299 | 7901 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7902 | |
7903 | =cut | |
7904 | */ | |
7905 | ||
a0d0e21e | 7906 | SV* |
65202027 | 7907 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
7908 | { |
7909 | sv_setnv(newSVrv(rv,classname), nv); | |
7910 | return rv; | |
7911 | } | |
463ee0b2 | 7912 | |
954c1994 GS |
7913 | /* |
7914 | =for apidoc sv_setref_pvn | |
7915 | ||
7916 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
7917 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
7918 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
7919 | argument indicates the package for the blessing. Set C<classname> to | |
bd61b366 | 7920 | C<NULL> to avoid the blessing. The new SV will have a reference count |
d34c2299 | 7921 | of 1, and the RV will be returned. |
954c1994 GS |
7922 | |
7923 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
7924 | ||
7925 | =cut | |
7926 | */ | |
7927 | ||
a0d0e21e | 7928 | SV* |
1b6737cc | 7929 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, const char *pv, STRLEN n) |
a0d0e21e LW |
7930 | { |
7931 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
7932 | return rv; |
7933 | } | |
7934 | ||
954c1994 GS |
7935 | /* |
7936 | =for apidoc sv_bless | |
7937 | ||
7938 | Blesses an SV into a specified package. The SV must be an RV. The package | |
7939 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
7940 | of the SV is unaffected. | |
7941 | ||
7942 | =cut | |
7943 | */ | |
7944 | ||
a0d0e21e | 7945 | SV* |
864dbfa3 | 7946 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 7947 | { |
97aff369 | 7948 | dVAR; |
76e3520e | 7949 | SV *tmpRef; |
a0d0e21e | 7950 | if (!SvROK(sv)) |
cea2e8a9 | 7951 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
7952 | tmpRef = SvRV(sv); |
7953 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
7954 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 7955 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
7956 | if (SvOBJECT(tmpRef)) { |
7957 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 7958 | --PL_sv_objcount; |
76e3520e | 7959 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 7960 | } |
a0d0e21e | 7961 | } |
76e3520e GS |
7962 | SvOBJECT_on(tmpRef); |
7963 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 7964 | ++PL_sv_objcount; |
862a34c6 | 7965 | SvUPGRADE(tmpRef, SVt_PVMG); |
b37c2d43 | 7966 | SvSTASH_set(tmpRef, (HV*)SvREFCNT_inc_simple(stash)); |
a0d0e21e | 7967 | |
2e3febc6 CS |
7968 | if (Gv_AMG(stash)) |
7969 | SvAMAGIC_on(sv); | |
7970 | else | |
52944de8 | 7971 | (void)SvAMAGIC_off(sv); |
a0d0e21e | 7972 | |
1edbfb88 AB |
7973 | if(SvSMAGICAL(tmpRef)) |
7974 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
7975 | mg_set(tmpRef); | |
7976 | ||
7977 | ||
ecdeb87c | 7978 | |
a0d0e21e LW |
7979 | return sv; |
7980 | } | |
7981 | ||
645c22ef | 7982 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
7983 | */ |
7984 | ||
76e3520e | 7985 | STATIC void |
cea2e8a9 | 7986 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 7987 | { |
97aff369 | 7988 | dVAR; |
850fabdf | 7989 | void *xpvmg; |
dd69841b | 7990 | HV *stash; |
b37c2d43 | 7991 | SV * const temp = sv_newmortal(); |
850fabdf | 7992 | |
a0d0e21e LW |
7993 | assert(SvTYPE(sv) == SVt_PVGV); |
7994 | SvFAKE_off(sv); | |
180488f8 NC |
7995 | gv_efullname3(temp, (GV *) sv, "*"); |
7996 | ||
f7877b28 | 7997 | if (GvGP(sv)) { |
dd69841b BB |
7998 | if(GvCVu((GV*)sv) && (stash = GvSTASH((GV*)sv)) && HvNAME_get(stash)) |
7999 | mro_method_changed_in(stash); | |
1edc1566 | 8000 | gp_free((GV*)sv); |
f7877b28 | 8001 | } |
e826b3c7 | 8002 | if (GvSTASH(sv)) { |
e15faf7d | 8003 | sv_del_backref((SV*)GvSTASH(sv), sv); |
5c284bb0 | 8004 | GvSTASH(sv) = NULL; |
e826b3c7 | 8005 | } |
a5f75d66 | 8006 | GvMULTI_off(sv); |
acda4c6a NC |
8007 | if (GvNAME_HEK(sv)) { |
8008 | unshare_hek(GvNAME_HEK(sv)); | |
8009 | } | |
2e5b91de | 8010 | isGV_with_GP_off(sv); |
850fabdf GS |
8011 | |
8012 | /* need to keep SvANY(sv) in the right arena */ | |
8013 | xpvmg = new_XPVMG(); | |
8014 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8015 | del_XPVGV(SvANY(sv)); | |
8016 | SvANY(sv) = xpvmg; | |
8017 | ||
a0d0e21e LW |
8018 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8019 | SvFLAGS(sv) |= SVt_PVMG; | |
180488f8 NC |
8020 | |
8021 | /* Intentionally not calling any local SET magic, as this isn't so much a | |
8022 | set operation as merely an internal storage change. */ | |
8023 | sv_setsv_flags(sv, temp, 0); | |
a0d0e21e LW |
8024 | } |
8025 | ||
954c1994 | 8026 | /* |
840a7b70 | 8027 | =for apidoc sv_unref_flags |
954c1994 GS |
8028 | |
8029 | Unsets the RV status of the SV, and decrements the reference count of | |
8030 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8031 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8032 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8033 | (otherwise the decrementing is conditional on the reference count being | |
8034 | different from one or the reference being a readonly SV). | |
7889fe52 | 8035 | See C<SvROK_off>. |
954c1994 GS |
8036 | |
8037 | =cut | |
8038 | */ | |
8039 | ||
ed6116ce | 8040 | void |
e15faf7d | 8041 | Perl_sv_unref_flags(pTHX_ SV *ref, U32 flags) |
ed6116ce | 8042 | { |
b64e5050 | 8043 | SV* const target = SvRV(ref); |
810b8aa5 | 8044 | |
e15faf7d NC |
8045 | if (SvWEAKREF(ref)) { |
8046 | sv_del_backref(target, ref); | |
8047 | SvWEAKREF_off(ref); | |
8048 | SvRV_set(ref, NULL); | |
810b8aa5 GS |
8049 | return; |
8050 | } | |
e15faf7d NC |
8051 | SvRV_set(ref, NULL); |
8052 | SvROK_off(ref); | |
8053 | /* You can't have a || SvREADONLY(target) here, as $a = $$a, where $a was | |
04ca4930 | 8054 | assigned to as BEGIN {$a = \"Foo"} will fail. */ |
e15faf7d NC |
8055 | if (SvREFCNT(target) != 1 || (flags & SV_IMMEDIATE_UNREF)) |
8056 | SvREFCNT_dec(target); | |
840a7b70 | 8057 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
e15faf7d | 8058 | sv_2mortal(target); /* Schedule for freeing later */ |
ed6116ce | 8059 | } |
8990e307 | 8060 | |
840a7b70 | 8061 | /* |
645c22ef DM |
8062 | =for apidoc sv_untaint |
8063 | ||
8064 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8065 | =cut | |
8066 | */ | |
8067 | ||
bbce6d69 | 8068 | void |
864dbfa3 | 8069 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8070 | { |
13f57bf8 | 8071 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
b64e5050 | 8072 | MAGIC * const mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8073 | if (mg) |
565764a8 | 8074 | mg->mg_len &= ~1; |
36477c24 | 8075 | } |
bbce6d69 | 8076 | } |
8077 | ||
645c22ef DM |
8078 | /* |
8079 | =for apidoc sv_tainted | |
8080 | ||
8081 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8082 | =cut | |
8083 | */ | |
8084 | ||
bbce6d69 | 8085 | bool |
864dbfa3 | 8086 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8087 | { |
13f57bf8 | 8088 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
823a54a3 | 8089 | const MAGIC * const mg = mg_find(sv, PERL_MAGIC_taint); |
2ddb8a4f | 8090 | if (mg && (mg->mg_len & 1) ) |
36477c24 | 8091 | return TRUE; |
8092 | } | |
8093 | return FALSE; | |
bbce6d69 | 8094 | } |
8095 | ||
09540bc3 JH |
8096 | /* |
8097 | =for apidoc sv_setpviv | |
8098 | ||
8099 | Copies an integer into the given SV, also updating its string value. | |
8100 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8101 | ||
8102 | =cut | |
8103 | */ | |
8104 | ||
8105 | void | |
8106 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8107 | { | |
8108 | char buf[TYPE_CHARS(UV)]; | |
8109 | char *ebuf; | |
b64e5050 | 8110 | char * const ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); |
09540bc3 JH |
8111 | |
8112 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8113 | } | |
8114 | ||
8115 | /* | |
8116 | =for apidoc sv_setpviv_mg | |
8117 | ||
8118 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8119 | ||
8120 | =cut | |
8121 | */ | |
8122 | ||
8123 | void | |
8124 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8125 | { | |
df7eb254 | 8126 | sv_setpviv(sv, iv); |
09540bc3 JH |
8127 | SvSETMAGIC(sv); |
8128 | } | |
8129 | ||
cea2e8a9 | 8130 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8131 | |
8132 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8133 | * version of the main function, (which may itself be aliased to us). | |
8134 | * Don't access this version directly. | |
8135 | */ | |
8136 | ||
cea2e8a9 GS |
8137 | void |
8138 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8139 | { | |
8140 | dTHX; | |
8141 | va_list args; | |
8142 | va_start(args, pat); | |
c5be433b | 8143 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8144 | va_end(args); |
8145 | } | |
8146 | ||
645c22ef DM |
8147 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8148 | * version of the main function, (which may itself be aliased to us). | |
8149 | * Don't access this version directly. | |
8150 | */ | |
cea2e8a9 GS |
8151 | |
8152 | void | |
8153 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8154 | { | |
8155 | dTHX; | |
8156 | va_list args; | |
8157 | va_start(args, pat); | |
c5be433b | 8158 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8159 | va_end(args); |
cea2e8a9 GS |
8160 | } |
8161 | #endif | |
8162 | ||
954c1994 GS |
8163 | /* |
8164 | =for apidoc sv_setpvf | |
8165 | ||
bffc3d17 SH |
8166 | Works like C<sv_catpvf> but copies the text into the SV instead of |
8167 | appending it. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
954c1994 GS |
8168 | |
8169 | =cut | |
8170 | */ | |
8171 | ||
46fc3d4c | 8172 | void |
864dbfa3 | 8173 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8174 | { |
8175 | va_list args; | |
46fc3d4c | 8176 | va_start(args, pat); |
c5be433b | 8177 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8178 | va_end(args); |
8179 | } | |
8180 | ||
bffc3d17 SH |
8181 | /* |
8182 | =for apidoc sv_vsetpvf | |
8183 | ||
8184 | Works like C<sv_vcatpvf> but copies the text into the SV instead of | |
8185 | appending it. Does not handle 'set' magic. See C<sv_vsetpvf_mg>. | |
8186 | ||
8187 | Usually used via its frontend C<sv_setpvf>. | |
8188 | ||
8189 | =cut | |
8190 | */ | |
645c22ef | 8191 | |
c5be433b GS |
8192 | void |
8193 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8194 | { | |
4608196e | 8195 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
c5be433b | 8196 | } |
ef50df4b | 8197 | |
954c1994 GS |
8198 | /* |
8199 | =for apidoc sv_setpvf_mg | |
8200 | ||
8201 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8202 | ||
8203 | =cut | |
8204 | */ | |
8205 | ||
ef50df4b | 8206 | void |
864dbfa3 | 8207 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8208 | { |
8209 | va_list args; | |
ef50df4b | 8210 | va_start(args, pat); |
c5be433b | 8211 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8212 | va_end(args); |
c5be433b GS |
8213 | } |
8214 | ||
bffc3d17 SH |
8215 | /* |
8216 | =for apidoc sv_vsetpvf_mg | |
8217 | ||
8218 | Like C<sv_vsetpvf>, but also handles 'set' magic. | |
8219 | ||
8220 | Usually used via its frontend C<sv_setpvf_mg>. | |
8221 | ||
8222 | =cut | |
8223 | */ | |
645c22ef | 8224 | |
c5be433b GS |
8225 | void |
8226 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8227 | { | |
4608196e | 8228 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
ef50df4b GS |
8229 | SvSETMAGIC(sv); |
8230 | } | |
8231 | ||
cea2e8a9 | 8232 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8233 | |
8234 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8235 | * version of the main function, (which may itself be aliased to us). | |
8236 | * Don't access this version directly. | |
8237 | */ | |
8238 | ||
cea2e8a9 GS |
8239 | void |
8240 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
8241 | { | |
8242 | dTHX; | |
8243 | va_list args; | |
8244 | va_start(args, pat); | |
c5be433b | 8245 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
8246 | va_end(args); |
8247 | } | |
8248 | ||
645c22ef DM |
8249 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8250 | * version of the main function, (which may itself be aliased to us). | |
8251 | * Don't access this version directly. | |
8252 | */ | |
8253 | ||
cea2e8a9 GS |
8254 | void |
8255 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8256 | { | |
8257 | dTHX; | |
8258 | va_list args; | |
8259 | va_start(args, pat); | |
c5be433b | 8260 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 8261 | va_end(args); |
cea2e8a9 GS |
8262 | } |
8263 | #endif | |
8264 | ||
954c1994 GS |
8265 | /* |
8266 | =for apidoc sv_catpvf | |
8267 | ||
d5ce4a7c GA |
8268 | Processes its arguments like C<sprintf> and appends the formatted |
8269 | output to an SV. If the appended data contains "wide" characters | |
8270 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
8271 | and characters >255 formatted with %c), the original SV might get | |
bffc3d17 | 8272 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. See |
cdd94ca7 NC |
8273 | C<sv_catpvf_mg>. If the original SV was UTF-8, the pattern should be |
8274 | valid UTF-8; if the original SV was bytes, the pattern should be too. | |
954c1994 | 8275 | |
d5ce4a7c | 8276 | =cut */ |
954c1994 | 8277 | |
46fc3d4c | 8278 | void |
864dbfa3 | 8279 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8280 | { |
8281 | va_list args; | |
46fc3d4c | 8282 | va_start(args, pat); |
c5be433b | 8283 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 8284 | va_end(args); |
8285 | } | |
8286 | ||
bffc3d17 SH |
8287 | /* |
8288 | =for apidoc sv_vcatpvf | |
8289 | ||
8290 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8291 | to an SV. Does not handle 'set' magic. See C<sv_vcatpvf_mg>. | |
8292 | ||
8293 | Usually used via its frontend C<sv_catpvf>. | |
8294 | ||
8295 | =cut | |
8296 | */ | |
645c22ef | 8297 | |
ef50df4b | 8298 | void |
c5be433b GS |
8299 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
8300 | { | |
4608196e | 8301 | sv_vcatpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
c5be433b GS |
8302 | } |
8303 | ||
954c1994 GS |
8304 | /* |
8305 | =for apidoc sv_catpvf_mg | |
8306 | ||
8307 | Like C<sv_catpvf>, but also handles 'set' magic. | |
8308 | ||
8309 | =cut | |
8310 | */ | |
8311 | ||
c5be433b | 8312 | void |
864dbfa3 | 8313 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8314 | { |
8315 | va_list args; | |
ef50df4b | 8316 | va_start(args, pat); |
c5be433b | 8317 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 8318 | va_end(args); |
c5be433b GS |
8319 | } |
8320 | ||
bffc3d17 SH |
8321 | /* |
8322 | =for apidoc sv_vcatpvf_mg | |
8323 | ||
8324 | Like C<sv_vcatpvf>, but also handles 'set' magic. | |
8325 | ||
8326 | Usually used via its frontend C<sv_catpvf_mg>. | |
8327 | ||
8328 | =cut | |
8329 | */ | |
645c22ef | 8330 | |
c5be433b GS |
8331 | void |
8332 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8333 | { | |
4608196e | 8334 | sv_vcatpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
ef50df4b GS |
8335 | SvSETMAGIC(sv); |
8336 | } | |
8337 | ||
954c1994 GS |
8338 | /* |
8339 | =for apidoc sv_vsetpvfn | |
8340 | ||
bffc3d17 | 8341 | Works like C<sv_vcatpvfn> but copies the text into the SV instead of |
954c1994 GS |
8342 | appending it. |
8343 | ||
bffc3d17 | 8344 | Usually used via one of its frontends C<sv_vsetpvf> and C<sv_vsetpvf_mg>. |
645c22ef | 8345 | |
954c1994 GS |
8346 | =cut |
8347 | */ | |
8348 | ||
46fc3d4c | 8349 | void |
7d5ea4e7 | 8350 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8351 | { |
8352 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 8353 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 8354 | } |
8355 | ||
2d00ba3b | 8356 | STATIC I32 |
9dd79c3f | 8357 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 | 8358 | { |
97aff369 | 8359 | dVAR; |
211dfcf1 HS |
8360 | I32 var = 0; |
8361 | switch (**pattern) { | |
8362 | case '1': case '2': case '3': | |
8363 | case '4': case '5': case '6': | |
8364 | case '7': case '8': case '9': | |
2fba7546 GA |
8365 | var = *(*pattern)++ - '0'; |
8366 | while (isDIGIT(**pattern)) { | |
5f66b61c | 8367 | const I32 tmp = var * 10 + (*(*pattern)++ - '0'); |
2fba7546 GA |
8368 | if (tmp < var) |
8369 | Perl_croak(aTHX_ "Integer overflow in format string for %s", (PL_op ? OP_NAME(PL_op) : "sv_vcatpvfn")); | |
8370 | var = tmp; | |
8371 | } | |
211dfcf1 HS |
8372 | } |
8373 | return var; | |
8374 | } | |
211dfcf1 | 8375 | |
c445ea15 AL |
8376 | STATIC char * |
8377 | S_F0convert(NV nv, char *endbuf, STRLEN *len) | |
4151a5fe | 8378 | { |
a3b680e6 | 8379 | const int neg = nv < 0; |
4151a5fe | 8380 | UV uv; |
4151a5fe IZ |
8381 | |
8382 | if (neg) | |
8383 | nv = -nv; | |
8384 | if (nv < UV_MAX) { | |
b464bac0 | 8385 | char *p = endbuf; |
4151a5fe | 8386 | nv += 0.5; |
028f8eaa | 8387 | uv = (UV)nv; |
4151a5fe IZ |
8388 | if (uv & 1 && uv == nv) |
8389 | uv--; /* Round to even */ | |
8390 | do { | |
a3b680e6 | 8391 | const unsigned dig = uv % 10; |
4151a5fe IZ |
8392 | *--p = '0' + dig; |
8393 | } while (uv /= 10); | |
8394 | if (neg) | |
8395 | *--p = '-'; | |
8396 | *len = endbuf - p; | |
8397 | return p; | |
8398 | } | |
bd61b366 | 8399 | return NULL; |
4151a5fe IZ |
8400 | } |
8401 | ||
8402 | ||
954c1994 GS |
8403 | /* |
8404 | =for apidoc sv_vcatpvfn | |
8405 | ||
8406 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8407 | to an SV. Uses an array of SVs if the C style variable argument list is | |
8408 | missing (NULL). When running with taint checks enabled, indicates via | |
8409 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
8410 | locales). | |
8411 | ||
bffc3d17 | 8412 | Usually used via one of its frontends C<sv_vcatpvf> and C<sv_vcatpvf_mg>. |
645c22ef | 8413 | |
954c1994 GS |
8414 | =cut |
8415 | */ | |
8416 | ||
8896765a RB |
8417 | |
8418 | #define VECTORIZE_ARGS vecsv = va_arg(*args, SV*);\ | |
8419 | vecstr = (U8*)SvPV_const(vecsv,veclen);\ | |
8420 | vec_utf8 = DO_UTF8(vecsv); | |
8421 | ||
1ef29b0e RGS |
8422 | /* XXX maybe_tainted is never assigned to, so the doc above is lying. */ |
8423 | ||
46fc3d4c | 8424 | void |
7d5ea4e7 | 8425 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8426 | { |
97aff369 | 8427 | dVAR; |
46fc3d4c | 8428 | char *p; |
8429 | char *q; | |
a3b680e6 | 8430 | const char *patend; |
fc36a67e | 8431 | STRLEN origlen; |
46fc3d4c | 8432 | I32 svix = 0; |
27da23d5 | 8433 | static const char nullstr[] = "(null)"; |
a0714e2c | 8434 | SV *argsv = NULL; |
b464bac0 AL |
8435 | bool has_utf8 = DO_UTF8(sv); /* has the result utf8? */ |
8436 | const bool pat_utf8 = has_utf8; /* the pattern is in utf8? */ | |
a0714e2c | 8437 | SV *nsv = NULL; |
4151a5fe IZ |
8438 | /* Times 4: a decimal digit takes more than 3 binary digits. |
8439 | * NV_DIG: mantissa takes than many decimal digits. | |
8440 | * Plus 32: Playing safe. */ | |
8441 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
8442 | /* large enough for "%#.#f" --chip */ | |
8443 | /* what about long double NVs? --jhi */ | |
db79b45b | 8444 | |
53c1dcc0 AL |
8445 | PERL_UNUSED_ARG(maybe_tainted); |
8446 | ||
46fc3d4c | 8447 | /* no matter what, this is a string now */ |
fc36a67e | 8448 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 8449 | |
8896765a | 8450 | /* special-case "", "%s", and "%-p" (SVf - see below) */ |
46fc3d4c | 8451 | if (patlen == 0) |
8452 | return; | |
0dbb1585 | 8453 | if (patlen == 2 && pat[0] == '%' && pat[1] == 's') { |
2d03de9c AL |
8454 | if (args) { |
8455 | const char * const s = va_arg(*args, char*); | |
8456 | sv_catpv(sv, s ? s : nullstr); | |
8457 | } | |
8458 | else if (svix < svmax) { | |
8459 | sv_catsv(sv, *svargs); | |
2d03de9c AL |
8460 | } |
8461 | return; | |
0dbb1585 | 8462 | } |
8896765a RB |
8463 | if (args && patlen == 3 && pat[0] == '%' && |
8464 | pat[1] == '-' && pat[2] == 'p') { | |
6c9570dc | 8465 | argsv = (SV*)va_arg(*args, void*); |
8896765a | 8466 | sv_catsv(sv, argsv); |
8896765a | 8467 | return; |
46fc3d4c | 8468 | } |
8469 | ||
1d917b39 | 8470 | #ifndef USE_LONG_DOUBLE |
4151a5fe | 8471 | /* special-case "%.<number>[gf]" */ |
7af36d83 | 8472 | if ( !args && patlen <= 5 && pat[0] == '%' && pat[1] == '.' |
4151a5fe IZ |
8473 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { |
8474 | unsigned digits = 0; | |
8475 | const char *pp; | |
8476 | ||
8477 | pp = pat + 2; | |
8478 | while (*pp >= '0' && *pp <= '9') | |
8479 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 8480 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
8481 | NV nv; |
8482 | ||
7af36d83 | 8483 | if (svix < svmax) |
4151a5fe IZ |
8484 | nv = SvNV(*svargs); |
8485 | else | |
8486 | return; | |
8487 | if (*pp == 'g') { | |
2873255c NC |
8488 | /* Add check for digits != 0 because it seems that some |
8489 | gconverts are buggy in this case, and we don't yet have | |
8490 | a Configure test for this. */ | |
8491 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
8492 | /* 0, point, slack */ | |
2e59c212 | 8493 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
8494 | sv_catpv(sv, ebuf); |
8495 | if (*ebuf) /* May return an empty string for digits==0 */ | |
8496 | return; | |
8497 | } | |
8498 | } else if (!digits) { | |
8499 | STRLEN l; | |
8500 | ||
8501 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
8502 | sv_catpvn(sv, p, l); | |
8503 | return; | |
8504 | } | |
8505 | } | |
8506 | } | |
8507 | } | |
1d917b39 | 8508 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 8509 | |
2cf2cfc6 | 8510 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 8511 | has_utf8 = TRUE; |
2cf2cfc6 | 8512 | |
46fc3d4c | 8513 | patend = (char*)pat + patlen; |
8514 | for (p = (char*)pat; p < patend; p = q) { | |
8515 | bool alt = FALSE; | |
8516 | bool left = FALSE; | |
b22c7a20 | 8517 | bool vectorize = FALSE; |
211dfcf1 | 8518 | bool vectorarg = FALSE; |
2cf2cfc6 | 8519 | bool vec_utf8 = FALSE; |
46fc3d4c | 8520 | char fill = ' '; |
8521 | char plus = 0; | |
8522 | char intsize = 0; | |
8523 | STRLEN width = 0; | |
fc36a67e | 8524 | STRLEN zeros = 0; |
46fc3d4c | 8525 | bool has_precis = FALSE; |
8526 | STRLEN precis = 0; | |
c445ea15 | 8527 | const I32 osvix = svix; |
2cf2cfc6 | 8528 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
8529 | #ifdef HAS_LDBL_SPRINTF_BUG |
8530 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 8531 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
8532 | bool fix_ldbl_sprintf_bug = FALSE; |
8533 | #endif | |
205f51d8 | 8534 | |
46fc3d4c | 8535 | char esignbuf[4]; |
89ebb4a3 | 8536 | U8 utf8buf[UTF8_MAXBYTES+1]; |
46fc3d4c | 8537 | STRLEN esignlen = 0; |
8538 | ||
bd61b366 | 8539 | const char *eptr = NULL; |
fc36a67e | 8540 | STRLEN elen = 0; |
a0714e2c | 8541 | SV *vecsv = NULL; |
4608196e | 8542 | const U8 *vecstr = NULL; |
b22c7a20 | 8543 | STRLEN veclen = 0; |
934abaf1 | 8544 | char c = 0; |
46fc3d4c | 8545 | int i; |
9c5ffd7c | 8546 | unsigned base = 0; |
8c8eb53c RB |
8547 | IV iv = 0; |
8548 | UV uv = 0; | |
9e5b023a JH |
8549 | /* we need a long double target in case HAS_LONG_DOUBLE but |
8550 | not USE_LONG_DOUBLE | |
8551 | */ | |
35fff930 | 8552 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
8553 | long double nv; |
8554 | #else | |
65202027 | 8555 | NV nv; |
9e5b023a | 8556 | #endif |
46fc3d4c | 8557 | STRLEN have; |
8558 | STRLEN need; | |
8559 | STRLEN gap; | |
7af36d83 | 8560 | const char *dotstr = "."; |
b22c7a20 | 8561 | STRLEN dotstrlen = 1; |
211dfcf1 | 8562 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 8563 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
8564 | I32 epix = 0; /* explicit precision index */ |
8565 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 8566 | bool asterisk = FALSE; |
46fc3d4c | 8567 | |
211dfcf1 | 8568 | /* echo everything up to the next format specification */ |
46fc3d4c | 8569 | for (q = p; q < patend && *q != '%'; ++q) ; |
8570 | if (q > p) { | |
db79b45b JH |
8571 | if (has_utf8 && !pat_utf8) |
8572 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
8573 | else | |
8574 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 8575 | p = q; |
8576 | } | |
8577 | if (q++ >= patend) | |
8578 | break; | |
8579 | ||
211dfcf1 HS |
8580 | /* |
8581 | We allow format specification elements in this order: | |
8582 | \d+\$ explicit format parameter index | |
8583 | [-+ 0#]+ flags | |
a472f209 | 8584 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 8585 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
8586 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
8587 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
8588 | [hlqLV] size | |
8896765a RB |
8589 | [%bcdefginopsuxDFOUX] format (mandatory) |
8590 | */ | |
8591 | ||
8592 | if (args) { | |
8593 | /* | |
8594 | As of perl5.9.3, printf format checking is on by default. | |
8595 | Internally, perl uses %p formats to provide an escape to | |
8596 | some extended formatting. This block deals with those | |
8597 | extensions: if it does not match, (char*)q is reset and | |
8598 | the normal format processing code is used. | |
8599 | ||
8600 | Currently defined extensions are: | |
8601 | %p include pointer address (standard) | |
8602 | %-p (SVf) include an SV (previously %_) | |
8603 | %-<num>p include an SV with precision <num> | |
8604 | %1p (VDf) include a v-string (as %vd) | |
8605 | %<num>p reserved for future extensions | |
8606 | ||
8607 | Robin Barker 2005-07-14 | |
211dfcf1 | 8608 | */ |
8896765a RB |
8609 | char* r = q; |
8610 | bool sv = FALSE; | |
8611 | STRLEN n = 0; | |
8612 | if (*q == '-') | |
8613 | sv = *q++; | |
c445ea15 | 8614 | n = expect_number(&q); |
8896765a RB |
8615 | if (*q++ == 'p') { |
8616 | if (sv) { /* SVf */ | |
8617 | if (n) { | |
8618 | precis = n; | |
8619 | has_precis = TRUE; | |
8620 | } | |
6c9570dc | 8621 | argsv = (SV*)va_arg(*args, void*); |
4ea561bc | 8622 | eptr = SvPV_const(argsv, elen); |
8896765a RB |
8623 | if (DO_UTF8(argsv)) |
8624 | is_utf8 = TRUE; | |
8625 | goto string; | |
8626 | } | |
8627 | #if vdNUMBER | |
8628 | else if (n == vdNUMBER) { /* VDf */ | |
8629 | vectorize = TRUE; | |
8630 | VECTORIZE_ARGS | |
8631 | goto format_vd; | |
8632 | } | |
8633 | #endif | |
8634 | else if (n) { | |
8635 | if (ckWARN_d(WARN_INTERNAL)) | |
8636 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), | |
8637 | "internal %%<num>p might conflict with future printf extensions"); | |
8638 | } | |
8639 | } | |
8640 | q = r; | |
8641 | } | |
8642 | ||
c445ea15 | 8643 | if ( (width = expect_number(&q)) ) { |
211dfcf1 HS |
8644 | if (*q == '$') { |
8645 | ++q; | |
8646 | efix = width; | |
8647 | } else { | |
8648 | goto gotwidth; | |
8649 | } | |
8650 | } | |
8651 | ||
fc36a67e | 8652 | /* FLAGS */ |
8653 | ||
46fc3d4c | 8654 | while (*q) { |
8655 | switch (*q) { | |
8656 | case ' ': | |
8657 | case '+': | |
9911cee9 TS |
8658 | if (plus == '+' && *q == ' ') /* '+' over ' ' */ |
8659 | q++; | |
8660 | else | |
8661 | plus = *q++; | |
46fc3d4c | 8662 | continue; |
8663 | ||
8664 | case '-': | |
8665 | left = TRUE; | |
8666 | q++; | |
8667 | continue; | |
8668 | ||
8669 | case '0': | |
8670 | fill = *q++; | |
8671 | continue; | |
8672 | ||
8673 | case '#': | |
8674 | alt = TRUE; | |
8675 | q++; | |
8676 | continue; | |
8677 | ||
fc36a67e | 8678 | default: |
8679 | break; | |
8680 | } | |
8681 | break; | |
8682 | } | |
46fc3d4c | 8683 | |
211dfcf1 | 8684 | tryasterisk: |
eb3fce90 | 8685 | if (*q == '*') { |
211dfcf1 | 8686 | q++; |
c445ea15 | 8687 | if ( (ewix = expect_number(&q)) ) |
211dfcf1 HS |
8688 | if (*q++ != '$') |
8689 | goto unknown; | |
eb3fce90 | 8690 | asterisk = TRUE; |
211dfcf1 HS |
8691 | } |
8692 | if (*q == 'v') { | |
eb3fce90 | 8693 | q++; |
211dfcf1 HS |
8694 | if (vectorize) |
8695 | goto unknown; | |
9cbac4c7 | 8696 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
8697 | evix = ewix; |
8698 | ewix = 0; | |
8699 | asterisk = FALSE; | |
8700 | } | |
8701 | vectorize = TRUE; | |
8702 | goto tryasterisk; | |
eb3fce90 JH |
8703 | } |
8704 | ||
211dfcf1 | 8705 | if (!asterisk) |
858a90f9 | 8706 | { |
7a5fa8a2 | 8707 | if( *q == '0' ) |
f3583277 | 8708 | fill = *q++; |
c445ea15 | 8709 | width = expect_number(&q); |
858a90f9 | 8710 | } |
211dfcf1 HS |
8711 | |
8712 | if (vectorize) { | |
8713 | if (vectorarg) { | |
8714 | if (args) | |
8715 | vecsv = va_arg(*args, SV*); | |
7ad96abb NC |
8716 | else if (evix) { |
8717 | vecsv = (evix > 0 && evix <= svmax) | |
8718 | ? svargs[evix-1] : &PL_sv_undef; | |
8719 | } else { | |
8720 | vecsv = svix < svmax ? svargs[svix++] : &PL_sv_undef; | |
8721 | } | |
245d4a47 | 8722 | dotstr = SvPV_const(vecsv, dotstrlen); |
640283f5 NC |
8723 | /* Keep the DO_UTF8 test *after* the SvPV call, else things go |
8724 | bad with tied or overloaded values that return UTF8. */ | |
211dfcf1 | 8725 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 8726 | is_utf8 = TRUE; |
640283f5 NC |
8727 | else if (has_utf8) { |
8728 | vecsv = sv_mortalcopy(vecsv); | |
8729 | sv_utf8_upgrade(vecsv); | |
8730 | dotstr = SvPV_const(vecsv, dotstrlen); | |
8731 | is_utf8 = TRUE; | |
8732 | } | |
211dfcf1 HS |
8733 | } |
8734 | if (args) { | |
8896765a | 8735 | VECTORIZE_ARGS |
eb3fce90 | 8736 | } |
7ad96abb | 8737 | else if (efix ? (efix > 0 && efix <= svmax) : svix < svmax) { |
211dfcf1 | 8738 | vecsv = svargs[efix ? efix-1 : svix++]; |
245d4a47 | 8739 | vecstr = (U8*)SvPV_const(vecsv,veclen); |
2cf2cfc6 | 8740 | vec_utf8 = DO_UTF8(vecsv); |
96b8f7ce JP |
8741 | |
8742 | /* if this is a version object, we need to convert | |
8743 | * back into v-string notation and then let the | |
8744 | * vectorize happen normally | |
d7aa5382 | 8745 | */ |
96b8f7ce JP |
8746 | if (sv_derived_from(vecsv, "version")) { |
8747 | char *version = savesvpv(vecsv); | |
34ba6322 SP |
8748 | if ( hv_exists((HV*)SvRV(vecsv), "alpha", 5 ) ) { |
8749 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), | |
8750 | "vector argument not supported with alpha versions"); | |
8751 | goto unknown; | |
8752 | } | |
96b8f7ce | 8753 | vecsv = sv_newmortal(); |
65b06e02 | 8754 | scan_vstring(version, version + veclen, vecsv); |
96b8f7ce JP |
8755 | vecstr = (U8*)SvPV_const(vecsv, veclen); |
8756 | vec_utf8 = DO_UTF8(vecsv); | |
8757 | Safefree(version); | |
d7aa5382 | 8758 | } |
211dfcf1 HS |
8759 | } |
8760 | else { | |
8761 | vecstr = (U8*)""; | |
8762 | veclen = 0; | |
8763 | } | |
eb3fce90 | 8764 | } |
fc36a67e | 8765 | |
eb3fce90 | 8766 | if (asterisk) { |
fc36a67e | 8767 | if (args) |
8768 | i = va_arg(*args, int); | |
8769 | else | |
eb3fce90 JH |
8770 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
8771 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8772 | left |= (i < 0); |
8773 | width = (i < 0) ? -i : i; | |
fc36a67e | 8774 | } |
211dfcf1 | 8775 | gotwidth: |
fc36a67e | 8776 | |
8777 | /* PRECISION */ | |
46fc3d4c | 8778 | |
fc36a67e | 8779 | if (*q == '.') { |
8780 | q++; | |
8781 | if (*q == '*') { | |
211dfcf1 | 8782 | q++; |
c445ea15 | 8783 | if ( ((epix = expect_number(&q))) && (*q++ != '$') ) |
7b8dd722 HS |
8784 | goto unknown; |
8785 | /* XXX: todo, support specified precision parameter */ | |
8786 | if (epix) | |
211dfcf1 | 8787 | goto unknown; |
46fc3d4c | 8788 | if (args) |
8789 | i = va_arg(*args, int); | |
8790 | else | |
eb3fce90 JH |
8791 | i = (ewix ? ewix <= svmax : svix < svmax) |
8792 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
9911cee9 TS |
8793 | precis = i; |
8794 | has_precis = !(i < 0); | |
fc36a67e | 8795 | } |
8796 | else { | |
8797 | precis = 0; | |
8798 | while (isDIGIT(*q)) | |
8799 | precis = precis * 10 + (*q++ - '0'); | |
9911cee9 | 8800 | has_precis = TRUE; |
fc36a67e | 8801 | } |
fc36a67e | 8802 | } |
46fc3d4c | 8803 | |
fc36a67e | 8804 | /* SIZE */ |
46fc3d4c | 8805 | |
fc36a67e | 8806 | switch (*q) { |
c623ac67 GS |
8807 | #ifdef WIN32 |
8808 | case 'I': /* Ix, I32x, and I64x */ | |
8809 | # ifdef WIN64 | |
8810 | if (q[1] == '6' && q[2] == '4') { | |
8811 | q += 3; | |
8812 | intsize = 'q'; | |
8813 | break; | |
8814 | } | |
8815 | # endif | |
8816 | if (q[1] == '3' && q[2] == '2') { | |
8817 | q += 3; | |
8818 | break; | |
8819 | } | |
8820 | # ifdef WIN64 | |
8821 | intsize = 'q'; | |
8822 | # endif | |
8823 | q++; | |
8824 | break; | |
8825 | #endif | |
9e5b023a | 8826 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 8827 | case 'L': /* Ld */ |
5f66b61c | 8828 | /*FALLTHROUGH*/ |
e5c81feb | 8829 | #ifdef HAS_QUAD |
6f9bb7fd | 8830 | case 'q': /* qd */ |
9e5b023a | 8831 | #endif |
6f9bb7fd GS |
8832 | intsize = 'q'; |
8833 | q++; | |
8834 | break; | |
8835 | #endif | |
fc36a67e | 8836 | case 'l': |
9e5b023a | 8837 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 8838 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 8839 | intsize = 'q'; |
8840 | q += 2; | |
46fc3d4c | 8841 | break; |
cf2093f6 | 8842 | } |
fc36a67e | 8843 | #endif |
5f66b61c | 8844 | /*FALLTHROUGH*/ |
fc36a67e | 8845 | case 'h': |
5f66b61c | 8846 | /*FALLTHROUGH*/ |
fc36a67e | 8847 | case 'V': |
8848 | intsize = *q++; | |
46fc3d4c | 8849 | break; |
8850 | } | |
8851 | ||
fc36a67e | 8852 | /* CONVERSION */ |
8853 | ||
211dfcf1 HS |
8854 | if (*q == '%') { |
8855 | eptr = q++; | |
8856 | elen = 1; | |
26372e71 GA |
8857 | if (vectorize) { |
8858 | c = '%'; | |
8859 | goto unknown; | |
8860 | } | |
211dfcf1 HS |
8861 | goto string; |
8862 | } | |
8863 | ||
26372e71 | 8864 | if (!vectorize && !args) { |
86c51f8b NC |
8865 | if (efix) { |
8866 | const I32 i = efix-1; | |
8867 | argsv = (i >= 0 && i < svmax) ? svargs[i] : &PL_sv_undef; | |
8868 | } else { | |
8869 | argsv = (svix >= 0 && svix < svmax) | |
8870 | ? svargs[svix++] : &PL_sv_undef; | |
8871 | } | |
863811b2 | 8872 | } |
211dfcf1 | 8873 | |
46fc3d4c | 8874 | switch (c = *q++) { |
8875 | ||
8876 | /* STRINGS */ | |
8877 | ||
46fc3d4c | 8878 | case 'c': |
26372e71 GA |
8879 | if (vectorize) |
8880 | goto unknown; | |
4ea561bc | 8881 | uv = (args) ? va_arg(*args, int) : SvIV(argsv); |
1bd104fb JH |
8882 | if ((uv > 255 || |
8883 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 8884 | && !IN_BYTES) { |
dfe13c55 | 8885 | eptr = (char*)utf8buf; |
9041c2e3 | 8886 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 8887 | is_utf8 = TRUE; |
7e2040f0 GS |
8888 | } |
8889 | else { | |
8890 | c = (char)uv; | |
8891 | eptr = &c; | |
8892 | elen = 1; | |
a0ed51b3 | 8893 | } |
46fc3d4c | 8894 | goto string; |
8895 | ||
46fc3d4c | 8896 | case 's': |
26372e71 GA |
8897 | if (vectorize) |
8898 | goto unknown; | |
8899 | if (args) { | |
fc36a67e | 8900 | eptr = va_arg(*args, char*); |
c635e13b | 8901 | if (eptr) |
1d7c1841 GS |
8902 | #ifdef MACOS_TRADITIONAL |
8903 | /* On MacOS, %#s format is used for Pascal strings */ | |
8904 | if (alt) | |
8905 | elen = *eptr++; | |
8906 | else | |
8907 | #endif | |
c635e13b | 8908 | elen = strlen(eptr); |
8909 | else { | |
27da23d5 | 8910 | eptr = (char *)nullstr; |
c635e13b | 8911 | elen = sizeof nullstr - 1; |
8912 | } | |
46fc3d4c | 8913 | } |
211dfcf1 | 8914 | else { |
4ea561bc | 8915 | eptr = SvPV_const(argsv, elen); |
7e2040f0 | 8916 | if (DO_UTF8(argsv)) { |
59b61096 | 8917 | I32 old_precis = precis; |
a0ed51b3 LW |
8918 | if (has_precis && precis < elen) { |
8919 | I32 p = precis; | |
7e2040f0 | 8920 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
8921 | precis = p; |
8922 | } | |
8923 | if (width) { /* fudge width (can't fudge elen) */ | |
59b61096 AV |
8924 | if (has_precis && precis < elen) |
8925 | width += precis - old_precis; | |
8926 | else | |
8927 | width += elen - sv_len_utf8(argsv); | |
a0ed51b3 | 8928 | } |
2cf2cfc6 | 8929 | is_utf8 = TRUE; |
a0ed51b3 LW |
8930 | } |
8931 | } | |
fc36a67e | 8932 | |
46fc3d4c | 8933 | string: |
8934 | if (has_precis && elen > precis) | |
8935 | elen = precis; | |
8936 | break; | |
8937 | ||
8938 | /* INTEGERS */ | |
8939 | ||
fc36a67e | 8940 | case 'p': |
be75b157 | 8941 | if (alt || vectorize) |
c2e66d9e | 8942 | goto unknown; |
211dfcf1 | 8943 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 8944 | base = 16; |
8945 | goto integer; | |
8946 | ||
46fc3d4c | 8947 | case 'D': |
29fe7a80 | 8948 | #ifdef IV_IS_QUAD |
22f3ae8c | 8949 | intsize = 'q'; |
29fe7a80 | 8950 | #else |
46fc3d4c | 8951 | intsize = 'l'; |
29fe7a80 | 8952 | #endif |
5f66b61c | 8953 | /*FALLTHROUGH*/ |
46fc3d4c | 8954 | case 'd': |
8955 | case 'i': | |
8896765a RB |
8956 | #if vdNUMBER |
8957 | format_vd: | |
8958 | #endif | |
b22c7a20 | 8959 | if (vectorize) { |
ba210ebe | 8960 | STRLEN ulen; |
211dfcf1 HS |
8961 | if (!veclen) |
8962 | continue; | |
2cf2cfc6 A |
8963 | if (vec_utf8) |
8964 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
8965 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 8966 | else { |
e83d50c9 | 8967 | uv = *vecstr; |
b22c7a20 GS |
8968 | ulen = 1; |
8969 | } | |
8970 | vecstr += ulen; | |
8971 | veclen -= ulen; | |
e83d50c9 JP |
8972 | if (plus) |
8973 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
8974 | } |
8975 | else if (args) { | |
46fc3d4c | 8976 | switch (intsize) { |
8977 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 8978 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 8979 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 8980 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
8981 | #ifdef HAS_QUAD |
8982 | case 'q': iv = va_arg(*args, Quad_t); break; | |
8983 | #endif | |
46fc3d4c | 8984 | } |
8985 | } | |
8986 | else { | |
4ea561bc | 8987 | IV tiv = SvIV(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 8988 | switch (intsize) { |
b10c0dba MHM |
8989 | case 'h': iv = (short)tiv; break; |
8990 | case 'l': iv = (long)tiv; break; | |
8991 | case 'V': | |
8992 | default: iv = tiv; break; | |
cf2093f6 | 8993 | #ifdef HAS_QUAD |
b10c0dba | 8994 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 8995 | #endif |
46fc3d4c | 8996 | } |
8997 | } | |
e83d50c9 JP |
8998 | if ( !vectorize ) /* we already set uv above */ |
8999 | { | |
9000 | if (iv >= 0) { | |
9001 | uv = iv; | |
9002 | if (plus) | |
9003 | esignbuf[esignlen++] = plus; | |
9004 | } | |
9005 | else { | |
9006 | uv = -iv; | |
9007 | esignbuf[esignlen++] = '-'; | |
9008 | } | |
46fc3d4c | 9009 | } |
9010 | base = 10; | |
9011 | goto integer; | |
9012 | ||
fc36a67e | 9013 | case 'U': |
29fe7a80 | 9014 | #ifdef IV_IS_QUAD |
22f3ae8c | 9015 | intsize = 'q'; |
29fe7a80 | 9016 | #else |
fc36a67e | 9017 | intsize = 'l'; |
29fe7a80 | 9018 | #endif |
5f66b61c | 9019 | /*FALLTHROUGH*/ |
fc36a67e | 9020 | case 'u': |
9021 | base = 10; | |
9022 | goto uns_integer; | |
9023 | ||
7ff06cc7 | 9024 | case 'B': |
4f19785b WSI |
9025 | case 'b': |
9026 | base = 2; | |
9027 | goto uns_integer; | |
9028 | ||
46fc3d4c | 9029 | case 'O': |
29fe7a80 | 9030 | #ifdef IV_IS_QUAD |
22f3ae8c | 9031 | intsize = 'q'; |
29fe7a80 | 9032 | #else |
46fc3d4c | 9033 | intsize = 'l'; |
29fe7a80 | 9034 | #endif |
5f66b61c | 9035 | /*FALLTHROUGH*/ |
46fc3d4c | 9036 | case 'o': |
9037 | base = 8; | |
9038 | goto uns_integer; | |
9039 | ||
9040 | case 'X': | |
46fc3d4c | 9041 | case 'x': |
9042 | base = 16; | |
46fc3d4c | 9043 | |
9044 | uns_integer: | |
b22c7a20 | 9045 | if (vectorize) { |
ba210ebe | 9046 | STRLEN ulen; |
b22c7a20 | 9047 | vector: |
211dfcf1 HS |
9048 | if (!veclen) |
9049 | continue; | |
2cf2cfc6 A |
9050 | if (vec_utf8) |
9051 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9052 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9053 | else { |
a05b299f | 9054 | uv = *vecstr; |
b22c7a20 GS |
9055 | ulen = 1; |
9056 | } | |
9057 | vecstr += ulen; | |
9058 | veclen -= ulen; | |
9059 | } | |
9060 | else if (args) { | |
46fc3d4c | 9061 | switch (intsize) { |
9062 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 9063 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 9064 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 9065 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 9066 | #ifdef HAS_QUAD |
9e3321a5 | 9067 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 9068 | #endif |
46fc3d4c | 9069 | } |
9070 | } | |
9071 | else { | |
4ea561bc | 9072 | UV tuv = SvUV(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9073 | switch (intsize) { |
b10c0dba MHM |
9074 | case 'h': uv = (unsigned short)tuv; break; |
9075 | case 'l': uv = (unsigned long)tuv; break; | |
9076 | case 'V': | |
9077 | default: uv = tuv; break; | |
cf2093f6 | 9078 | #ifdef HAS_QUAD |
b10c0dba | 9079 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 9080 | #endif |
46fc3d4c | 9081 | } |
9082 | } | |
9083 | ||
9084 | integer: | |
4d84ee25 NC |
9085 | { |
9086 | char *ptr = ebuf + sizeof ebuf; | |
1387f30c DD |
9087 | bool tempalt = uv ? alt : FALSE; /* Vectors can't change alt */ |
9088 | zeros = 0; | |
9089 | ||
4d84ee25 NC |
9090 | switch (base) { |
9091 | unsigned dig; | |
9092 | case 16: | |
14eb61ab | 9093 | p = (char *)((c == 'X') ? PL_hexdigit + 16 : PL_hexdigit); |
4d84ee25 NC |
9094 | do { |
9095 | dig = uv & 15; | |
9096 | *--ptr = p[dig]; | |
9097 | } while (uv >>= 4); | |
1387f30c | 9098 | if (tempalt) { |
4d84ee25 NC |
9099 | esignbuf[esignlen++] = '0'; |
9100 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ | |
9101 | } | |
9102 | break; | |
9103 | case 8: | |
9104 | do { | |
9105 | dig = uv & 7; | |
9106 | *--ptr = '0' + dig; | |
9107 | } while (uv >>= 3); | |
9108 | if (alt && *ptr != '0') | |
9109 | *--ptr = '0'; | |
9110 | break; | |
9111 | case 2: | |
9112 | do { | |
9113 | dig = uv & 1; | |
9114 | *--ptr = '0' + dig; | |
9115 | } while (uv >>= 1); | |
1387f30c | 9116 | if (tempalt) { |
4d84ee25 | 9117 | esignbuf[esignlen++] = '0'; |
7ff06cc7 | 9118 | esignbuf[esignlen++] = c; |
4d84ee25 NC |
9119 | } |
9120 | break; | |
9121 | default: /* it had better be ten or less */ | |
9122 | do { | |
9123 | dig = uv % base; | |
9124 | *--ptr = '0' + dig; | |
9125 | } while (uv /= base); | |
9126 | break; | |
46fc3d4c | 9127 | } |
4d84ee25 NC |
9128 | elen = (ebuf + sizeof ebuf) - ptr; |
9129 | eptr = ptr; | |
9130 | if (has_precis) { | |
9131 | if (precis > elen) | |
9132 | zeros = precis - elen; | |
e6bb52fd TS |
9133 | else if (precis == 0 && elen == 1 && *eptr == '0' |
9134 | && !(base == 8 && alt)) /* "%#.0o" prints "0" */ | |
4d84ee25 | 9135 | elen = 0; |
9911cee9 TS |
9136 | |
9137 | /* a precision nullifies the 0 flag. */ | |
9138 | if (fill == '0') | |
9139 | fill = ' '; | |
eda88b6d | 9140 | } |
c10ed8b9 | 9141 | } |
46fc3d4c | 9142 | break; |
9143 | ||
9144 | /* FLOATING POINT */ | |
9145 | ||
fc36a67e | 9146 | case 'F': |
9147 | c = 'f'; /* maybe %F isn't supported here */ | |
5f66b61c | 9148 | /*FALLTHROUGH*/ |
46fc3d4c | 9149 | case 'e': case 'E': |
fc36a67e | 9150 | case 'f': |
46fc3d4c | 9151 | case 'g': case 'G': |
26372e71 GA |
9152 | if (vectorize) |
9153 | goto unknown; | |
46fc3d4c | 9154 | |
9155 | /* This is evil, but floating point is even more evil */ | |
9156 | ||
9e5b023a JH |
9157 | /* for SV-style calling, we can only get NV |
9158 | for C-style calling, we assume %f is double; | |
9159 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9160 | */ | |
9161 | switch (intsize) { | |
9162 | case 'V': | |
9163 | #if defined(USE_LONG_DOUBLE) | |
9164 | intsize = 'q'; | |
9165 | #endif | |
9166 | break; | |
8a2e3f14 | 9167 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 | 9168 | case 'l': |
5f66b61c | 9169 | /*FALLTHROUGH*/ |
9e5b023a JH |
9170 | default: |
9171 | #if defined(USE_LONG_DOUBLE) | |
9172 | intsize = args ? 0 : 'q'; | |
9173 | #endif | |
9174 | break; | |
9175 | case 'q': | |
9176 | #if defined(HAS_LONG_DOUBLE) | |
9177 | break; | |
9178 | #else | |
5f66b61c | 9179 | /*FALLTHROUGH*/ |
9e5b023a JH |
9180 | #endif |
9181 | case 'h': | |
9e5b023a JH |
9182 | goto unknown; |
9183 | } | |
9184 | ||
9185 | /* now we need (long double) if intsize == 'q', else (double) */ | |
26372e71 | 9186 | nv = (args) ? |
35fff930 JH |
9187 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9188 | intsize == 'q' ? | |
205f51d8 AS |
9189 | va_arg(*args, long double) : |
9190 | va_arg(*args, double) | |
35fff930 | 9191 | #else |
205f51d8 | 9192 | va_arg(*args, double) |
35fff930 | 9193 | #endif |
4ea561bc | 9194 | : SvNV(argsv); |
fc36a67e | 9195 | |
9196 | need = 0; | |
3952c29a NC |
9197 | /* nv * 0 will be NaN for NaN, +Inf and -Inf, and 0 for anything |
9198 | else. frexp() has some unspecified behaviour for those three */ | |
9199 | if (c != 'e' && c != 'E' && (nv * 0) == 0) { | |
fc36a67e | 9200 | i = PERL_INT_MIN; |
9e5b023a JH |
9201 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9202 | will cast our (long double) to (double) */ | |
73b309ea | 9203 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9204 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9205 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9206 | if (i > 0) |
fc36a67e | 9207 | need = BIT_DIGITS(i); |
9208 | } | |
9209 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9210 | |
fc36a67e | 9211 | if (need < width) |
9212 | need = width; | |
9213 | ||
20f6aaab AS |
9214 | #ifdef HAS_LDBL_SPRINTF_BUG |
9215 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9216 | with sfio - Allen <allens@cpan.org> */ |
9217 | ||
9218 | # ifdef DBL_MAX | |
9219 | # define MY_DBL_MAX DBL_MAX | |
9220 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9221 | # if DOUBLESIZE >= 8 | |
9222 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9223 | # else | |
9224 | # define MY_DBL_MAX 3.40282347E+38L | |
9225 | # endif | |
9226 | # endif | |
9227 | ||
9228 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9229 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9230 | # else |
205f51d8 | 9231 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9232 | # endif |
20f6aaab | 9233 | |
205f51d8 AS |
9234 | # ifdef DBL_MIN |
9235 | # define MY_DBL_MIN DBL_MIN | |
9236 | # else /* XXX guessing! -Allen */ | |
9237 | # if DOUBLESIZE >= 8 | |
9238 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9239 | # else | |
9240 | # define MY_DBL_MIN 1.17549435E-38L | |
9241 | # endif | |
9242 | # endif | |
20f6aaab | 9243 | |
205f51d8 AS |
9244 | if ((intsize == 'q') && (c == 'f') && |
9245 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9246 | (need < DBL_DIG)) { | |
9247 | /* it's going to be short enough that | |
9248 | * long double precision is not needed */ | |
9249 | ||
9250 | if ((nv <= 0L) && (nv >= -0L)) | |
9251 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9252 | else { | |
9253 | /* would use Perl_fp_class as a double-check but not | |
9254 | * functional on IRIX - see perl.h comments */ | |
9255 | ||
9256 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9257 | /* It's within the range that a double can represent */ | |
9258 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9259 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9260 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9261 | #endif |
205f51d8 | 9262 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9263 | } |
205f51d8 AS |
9264 | } |
9265 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9266 | double temp; | |
9267 | ||
9268 | intsize = 0; | |
9269 | temp = (double)nv; | |
9270 | nv = (NV)temp; | |
9271 | } | |
20f6aaab | 9272 | } |
205f51d8 AS |
9273 | |
9274 | # undef MY_DBL_MAX | |
9275 | # undef MY_DBL_MAX_BUG | |
9276 | # undef MY_DBL_MIN | |
9277 | ||
20f6aaab AS |
9278 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9279 | ||
46fc3d4c | 9280 | need += 20; /* fudge factor */ |
80252599 GS |
9281 | if (PL_efloatsize < need) { |
9282 | Safefree(PL_efloatbuf); | |
9283 | PL_efloatsize = need + 20; /* more fudge */ | |
a02a5408 | 9284 | Newx(PL_efloatbuf, PL_efloatsize, char); |
7d5ea4e7 | 9285 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9286 | } |
9287 | ||
4151a5fe IZ |
9288 | if ( !(width || left || plus || alt) && fill != '0' |
9289 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
9290 | /* See earlier comment about buggy Gconvert when digits, |
9291 | aka precis is 0 */ | |
9292 | if ( c == 'g' && precis) { | |
2e59c212 | 9293 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4150c189 NC |
9294 | /* May return an empty string for digits==0 */ |
9295 | if (*PL_efloatbuf) { | |
9296 | elen = strlen(PL_efloatbuf); | |
4151a5fe | 9297 | goto float_converted; |
4150c189 | 9298 | } |
4151a5fe IZ |
9299 | } else if ( c == 'f' && !precis) { |
9300 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
9301 | break; | |
9302 | } | |
9303 | } | |
4d84ee25 NC |
9304 | { |
9305 | char *ptr = ebuf + sizeof ebuf; | |
9306 | *--ptr = '\0'; | |
9307 | *--ptr = c; | |
9308 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ | |
9e5b023a | 9309 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) |
4d84ee25 NC |
9310 | if (intsize == 'q') { |
9311 | /* Copy the one or more characters in a long double | |
9312 | * format before the 'base' ([efgEFG]) character to | |
9313 | * the format string. */ | |
9314 | static char const prifldbl[] = PERL_PRIfldbl; | |
9315 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9316 | while (p >= prifldbl) { *--ptr = *p--; } | |
9317 | } | |
65202027 | 9318 | #endif |
4d84ee25 NC |
9319 | if (has_precis) { |
9320 | base = precis; | |
9321 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
9322 | *--ptr = '.'; | |
9323 | } | |
9324 | if (width) { | |
9325 | base = width; | |
9326 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
9327 | } | |
9328 | if (fill == '0') | |
9329 | *--ptr = fill; | |
9330 | if (left) | |
9331 | *--ptr = '-'; | |
9332 | if (plus) | |
9333 | *--ptr = plus; | |
9334 | if (alt) | |
9335 | *--ptr = '#'; | |
9336 | *--ptr = '%'; | |
9337 | ||
9338 | /* No taint. Otherwise we are in the strange situation | |
9339 | * where printf() taints but print($float) doesn't. | |
9340 | * --jhi */ | |
9e5b023a | 9341 | #if defined(HAS_LONG_DOUBLE) |
4150c189 | 9342 | elen = ((intsize == 'q') |
d9fad198 JH |
9343 | ? my_snprintf(PL_efloatbuf, PL_efloatsize, ptr, nv) |
9344 | : my_snprintf(PL_efloatbuf, PL_efloatsize, ptr, (double)nv)); | |
9e5b023a | 9345 | #else |
4150c189 | 9346 | elen = my_sprintf(PL_efloatbuf, ptr, nv); |
9e5b023a | 9347 | #endif |
4d84ee25 | 9348 | } |
4151a5fe | 9349 | float_converted: |
80252599 | 9350 | eptr = PL_efloatbuf; |
46fc3d4c | 9351 | break; |
9352 | ||
fc36a67e | 9353 | /* SPECIAL */ |
9354 | ||
9355 | case 'n': | |
26372e71 GA |
9356 | if (vectorize) |
9357 | goto unknown; | |
fc36a67e | 9358 | i = SvCUR(sv) - origlen; |
26372e71 | 9359 | if (args) { |
c635e13b | 9360 | switch (intsize) { |
9361 | case 'h': *(va_arg(*args, short*)) = i; break; | |
9362 | default: *(va_arg(*args, int*)) = i; break; | |
9363 | case 'l': *(va_arg(*args, long*)) = i; break; | |
9364 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
9365 | #ifdef HAS_QUAD |
9366 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
9367 | #endif | |
c635e13b | 9368 | } |
fc36a67e | 9369 | } |
9dd79c3f | 9370 | else |
211dfcf1 | 9371 | sv_setuv_mg(argsv, (UV)i); |
fc36a67e | 9372 | continue; /* not "break" */ |
9373 | ||
9374 | /* UNKNOWN */ | |
9375 | ||
46fc3d4c | 9376 | default: |
fc36a67e | 9377 | unknown: |
041457d9 DM |
9378 | if (!args |
9379 | && (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF) | |
9380 | && ckWARN(WARN_PRINTF)) | |
9381 | { | |
c4420975 | 9382 | SV * const msg = sv_newmortal(); |
35c1215d NC |
9383 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
9384 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 9385 | if (c) { |
0f4b6630 | 9386 | if (isPRINT(c)) |
1c846c1f | 9387 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
9388 | "\"%%%c\"", c & 0xFF); |
9389 | else | |
9390 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 9391 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 9392 | (UV)c & 0xFF); |
0f4b6630 | 9393 | } else |
396482e1 | 9394 | sv_catpvs(msg, "end of string"); |
be2597df | 9395 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, SVfARG(msg)); /* yes, this is reentrant */ |
c635e13b | 9396 | } |
fb73857a | 9397 | |
9398 | /* output mangled stuff ... */ | |
9399 | if (c == '\0') | |
9400 | --q; | |
46fc3d4c | 9401 | eptr = p; |
9402 | elen = q - p; | |
fb73857a | 9403 | |
9404 | /* ... right here, because formatting flags should not apply */ | |
9405 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9406 | p = SvEND(sv); | |
4459522c | 9407 | Copy(eptr, p, elen, char); |
fb73857a | 9408 | p += elen; |
9409 | *p = '\0'; | |
3f7c398e | 9410 | SvCUR_set(sv, p - SvPVX_const(sv)); |
58e33a90 | 9411 | svix = osvix; |
fb73857a | 9412 | continue; /* not "break" */ |
46fc3d4c | 9413 | } |
9414 | ||
cc61b222 TS |
9415 | if (is_utf8 != has_utf8) { |
9416 | if (is_utf8) { | |
9417 | if (SvCUR(sv)) | |
9418 | sv_utf8_upgrade(sv); | |
9419 | } | |
9420 | else { | |
9421 | const STRLEN old_elen = elen; | |
9422 | SV * const nsv = sv_2mortal(newSVpvn(eptr, elen)); | |
9423 | sv_utf8_upgrade(nsv); | |
9424 | eptr = SvPVX_const(nsv); | |
9425 | elen = SvCUR(nsv); | |
9426 | ||
9427 | if (width) { /* fudge width (can't fudge elen) */ | |
9428 | width += elen - old_elen; | |
9429 | } | |
9430 | is_utf8 = TRUE; | |
9431 | } | |
9432 | } | |
9433 | ||
6c94ec8b | 9434 | have = esignlen + zeros + elen; |
ed2b91d2 GA |
9435 | if (have < zeros) |
9436 | Perl_croak_nocontext(PL_memory_wrap); | |
6c94ec8b | 9437 | |
46fc3d4c | 9438 | need = (have > width ? have : width); |
9439 | gap = need - have; | |
9440 | ||
d2641cbd PC |
9441 | if (need >= (((STRLEN)~0) - SvCUR(sv) - dotstrlen - 1)) |
9442 | Perl_croak_nocontext(PL_memory_wrap); | |
b22c7a20 | 9443 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 9444 | p = SvEND(sv); |
9445 | if (esignlen && fill == '0') { | |
53c1dcc0 | 9446 | int i; |
eb160463 | 9447 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9448 | *p++ = esignbuf[i]; |
9449 | } | |
9450 | if (gap && !left) { | |
9451 | memset(p, fill, gap); | |
9452 | p += gap; | |
9453 | } | |
9454 | if (esignlen && fill != '0') { | |
53c1dcc0 | 9455 | int i; |
eb160463 | 9456 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9457 | *p++ = esignbuf[i]; |
9458 | } | |
fc36a67e | 9459 | if (zeros) { |
53c1dcc0 | 9460 | int i; |
fc36a67e | 9461 | for (i = zeros; i; i--) |
9462 | *p++ = '0'; | |
9463 | } | |
46fc3d4c | 9464 | if (elen) { |
4459522c | 9465 | Copy(eptr, p, elen, char); |
46fc3d4c | 9466 | p += elen; |
9467 | } | |
9468 | if (gap && left) { | |
9469 | memset(p, ' ', gap); | |
9470 | p += gap; | |
9471 | } | |
b22c7a20 GS |
9472 | if (vectorize) { |
9473 | if (veclen) { | |
4459522c | 9474 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
9475 | p += dotstrlen; |
9476 | } | |
9477 | else | |
9478 | vectorize = FALSE; /* done iterating over vecstr */ | |
9479 | } | |
2cf2cfc6 A |
9480 | if (is_utf8) |
9481 | has_utf8 = TRUE; | |
9482 | if (has_utf8) | |
7e2040f0 | 9483 | SvUTF8_on(sv); |
46fc3d4c | 9484 | *p = '\0'; |
3f7c398e | 9485 | SvCUR_set(sv, p - SvPVX_const(sv)); |
b22c7a20 GS |
9486 | if (vectorize) { |
9487 | esignlen = 0; | |
9488 | goto vector; | |
9489 | } | |
46fc3d4c | 9490 | } |
9491 | } | |
51371543 | 9492 | |
645c22ef DM |
9493 | /* ========================================================================= |
9494 | ||
9495 | =head1 Cloning an interpreter | |
9496 | ||
9497 | All the macros and functions in this section are for the private use of | |
9498 | the main function, perl_clone(). | |
9499 | ||
9500 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
9501 | During the course of a cloning, a hash table is used to map old addresses | |
9502 | to new addresses. The table is created and manipulated with the | |
9503 | ptr_table_* functions. | |
9504 | ||
9505 | =cut | |
9506 | ||
9507 | ============================================================================*/ | |
9508 | ||
9509 | ||
1d7c1841 GS |
9510 | #if defined(USE_ITHREADS) |
9511 | ||
d4c19fe8 | 9512 | /* XXX Remove this so it doesn't have to go thru the macro and return for nothing */ |
1d7c1841 GS |
9513 | #ifndef GpREFCNT_inc |
9514 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
9515 | #endif | |
9516 | ||
9517 | ||
a41cc44e | 9518 | /* Certain cases in Perl_ss_dup have been merged, by relying on the fact |
3e07292d NC |
9519 | that currently av_dup, gv_dup and hv_dup are the same as sv_dup. |
9520 | If this changes, please unmerge ss_dup. */ | |
d2d73c3e | 9521 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
7f466ec7 | 9522 | #define sv_dup_inc_NN(s,t) SvREFCNT_inc_NN(sv_dup(s,t)) |
d2d73c3e AB |
9523 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) |
9524 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9525 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
9526 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9527 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
9528 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9529 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
9530 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9531 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
9532 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
6136c704 AL |
9533 | #define SAVEPV(p) ((p) ? savepv(p) : NULL) |
9534 | #define SAVEPVN(p,n) ((p) ? savepvn(p,n) : NULL) | |
8cf8f3d1 | 9535 | |
199e78b7 DM |
9536 | /* clone a parser */ |
9537 | ||
9538 | yy_parser * | |
9539 | Perl_parser_dup(pTHX_ const yy_parser *proto, CLONE_PARAMS* param) | |
9540 | { | |
9541 | yy_parser *parser; | |
9542 | ||
9543 | if (!proto) | |
9544 | return NULL; | |
9545 | ||
7c197c94 DM |
9546 | /* look for it in the table first */ |
9547 | parser = (yy_parser *)ptr_table_fetch(PL_ptr_table, proto); | |
9548 | if (parser) | |
9549 | return parser; | |
9550 | ||
9551 | /* create anew and remember what it is */ | |
199e78b7 | 9552 | Newxz(parser, 1, yy_parser); |
7c197c94 | 9553 | ptr_table_store(PL_ptr_table, proto, parser); |
199e78b7 DM |
9554 | |
9555 | parser->yyerrstatus = 0; | |
9556 | parser->yychar = YYEMPTY; /* Cause a token to be read. */ | |
9557 | ||
9558 | /* XXX these not yet duped */ | |
9559 | parser->old_parser = NULL; | |
9560 | parser->stack = NULL; | |
9561 | parser->ps = NULL; | |
9562 | parser->stack_size = 0; | |
9563 | /* XXX parser->stack->state = 0; */ | |
9564 | ||
9565 | /* XXX eventually, just Copy() most of the parser struct ? */ | |
9566 | ||
9567 | parser->lex_brackets = proto->lex_brackets; | |
9568 | parser->lex_casemods = proto->lex_casemods; | |
9569 | parser->lex_brackstack = savepvn(proto->lex_brackstack, | |
9570 | (proto->lex_brackets < 120 ? 120 : proto->lex_brackets)); | |
9571 | parser->lex_casestack = savepvn(proto->lex_casestack, | |
9572 | (proto->lex_casemods < 12 ? 12 : proto->lex_casemods)); | |
9573 | parser->lex_defer = proto->lex_defer; | |
9574 | parser->lex_dojoin = proto->lex_dojoin; | |
9575 | parser->lex_expect = proto->lex_expect; | |
9576 | parser->lex_formbrack = proto->lex_formbrack; | |
9577 | parser->lex_inpat = proto->lex_inpat; | |
9578 | parser->lex_inwhat = proto->lex_inwhat; | |
9579 | parser->lex_op = proto->lex_op; | |
9580 | parser->lex_repl = sv_dup_inc(proto->lex_repl, param); | |
9581 | parser->lex_starts = proto->lex_starts; | |
9582 | parser->lex_stuff = sv_dup_inc(proto->lex_stuff, param); | |
9583 | parser->multi_close = proto->multi_close; | |
9584 | parser->multi_open = proto->multi_open; | |
9585 | parser->multi_start = proto->multi_start; | |
670a9cb2 | 9586 | parser->multi_end = proto->multi_end; |
199e78b7 DM |
9587 | parser->pending_ident = proto->pending_ident; |
9588 | parser->preambled = proto->preambled; | |
9589 | parser->sublex_info = proto->sublex_info; /* XXX not quite right */ | |
bdc0bf6f | 9590 | parser->linestr = sv_dup_inc(proto->linestr, param); |
53a7735b DM |
9591 | parser->expect = proto->expect; |
9592 | parser->copline = proto->copline; | |
f06b5848 | 9593 | parser->last_lop_op = proto->last_lop_op; |
bc177e6b | 9594 | parser->lex_state = proto->lex_state; |
2f9285f8 | 9595 | parser->rsfp = fp_dup(proto->rsfp, '<', param); |
5486870f DM |
9596 | /* rsfp_filters entries have fake IoDIRP() */ |
9597 | parser->rsfp_filters= av_dup_inc(proto->rsfp_filters, param); | |
12bd6ede DM |
9598 | parser->in_my = proto->in_my; |
9599 | parser->in_my_stash = hv_dup(proto->in_my_stash, param); | |
13765c85 | 9600 | parser->error_count = proto->error_count; |
bc177e6b | 9601 | |
53a7735b | 9602 | |
f06b5848 DM |
9603 | parser->linestr = sv_dup_inc(proto->linestr, param); |
9604 | ||
9605 | { | |
1e05feb3 AL |
9606 | char * const ols = SvPVX(proto->linestr); |
9607 | char * const ls = SvPVX(parser->linestr); | |
f06b5848 DM |
9608 | |
9609 | parser->bufptr = ls + (proto->bufptr >= ols ? | |
9610 | proto->bufptr - ols : 0); | |
9611 | parser->oldbufptr = ls + (proto->oldbufptr >= ols ? | |
9612 | proto->oldbufptr - ols : 0); | |
9613 | parser->oldoldbufptr= ls + (proto->oldoldbufptr >= ols ? | |
9614 | proto->oldoldbufptr - ols : 0); | |
9615 | parser->linestart = ls + (proto->linestart >= ols ? | |
9616 | proto->linestart - ols : 0); | |
9617 | parser->last_uni = ls + (proto->last_uni >= ols ? | |
9618 | proto->last_uni - ols : 0); | |
9619 | parser->last_lop = ls + (proto->last_lop >= ols ? | |
9620 | proto->last_lop - ols : 0); | |
9621 | ||
9622 | parser->bufend = ls + SvCUR(parser->linestr); | |
9623 | } | |
199e78b7 | 9624 | |
14047fc9 DM |
9625 | Copy(proto->tokenbuf, parser->tokenbuf, 256, char); |
9626 | ||
2f9285f8 | 9627 | |
199e78b7 DM |
9628 | #ifdef PERL_MAD |
9629 | parser->endwhite = proto->endwhite; | |
9630 | parser->faketokens = proto->faketokens; | |
9631 | parser->lasttoke = proto->lasttoke; | |
9632 | parser->nextwhite = proto->nextwhite; | |
9633 | parser->realtokenstart = proto->realtokenstart; | |
9634 | parser->skipwhite = proto->skipwhite; | |
9635 | parser->thisclose = proto->thisclose; | |
9636 | parser->thismad = proto->thismad; | |
9637 | parser->thisopen = proto->thisopen; | |
9638 | parser->thisstuff = proto->thisstuff; | |
9639 | parser->thistoken = proto->thistoken; | |
9640 | parser->thiswhite = proto->thiswhite; | |
fb205e7a DM |
9641 | |
9642 | Copy(proto->nexttoke, parser->nexttoke, 5, NEXTTOKE); | |
9643 | parser->curforce = proto->curforce; | |
9644 | #else | |
9645 | Copy(proto->nextval, parser->nextval, 5, YYSTYPE); | |
9646 | Copy(proto->nexttype, parser->nexttype, 5, I32); | |
9647 | parser->nexttoke = proto->nexttoke; | |
199e78b7 DM |
9648 | #endif |
9649 | return parser; | |
9650 | } | |
9651 | ||
d2d73c3e | 9652 | |
d2d73c3e | 9653 | /* duplicate a file handle */ |
645c22ef | 9654 | |
1d7c1841 | 9655 | PerlIO * |
a8fc9800 | 9656 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
9657 | { |
9658 | PerlIO *ret; | |
53c1dcc0 AL |
9659 | |
9660 | PERL_UNUSED_ARG(type); | |
73d840c0 | 9661 | |
1d7c1841 GS |
9662 | if (!fp) |
9663 | return (PerlIO*)NULL; | |
9664 | ||
9665 | /* look for it in the table first */ | |
9666 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
9667 | if (ret) | |
9668 | return ret; | |
9669 | ||
9670 | /* create anew and remember what it is */ | |
ecdeb87c | 9671 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
9672 | ptr_table_store(PL_ptr_table, fp, ret); |
9673 | return ret; | |
9674 | } | |
9675 | ||
645c22ef DM |
9676 | /* duplicate a directory handle */ |
9677 | ||
1d7c1841 GS |
9678 | DIR * |
9679 | Perl_dirp_dup(pTHX_ DIR *dp) | |
9680 | { | |
96a5add6 | 9681 | PERL_UNUSED_CONTEXT; |
1d7c1841 GS |
9682 | if (!dp) |
9683 | return (DIR*)NULL; | |
9684 | /* XXX TODO */ | |
9685 | return dp; | |
9686 | } | |
9687 | ||
ff276b08 | 9688 | /* duplicate a typeglob */ |
645c22ef | 9689 | |
1d7c1841 | 9690 | GP * |
a8fc9800 | 9691 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
9692 | { |
9693 | GP *ret; | |
b37c2d43 | 9694 | |
1d7c1841 GS |
9695 | if (!gp) |
9696 | return (GP*)NULL; | |
9697 | /* look for it in the table first */ | |
9698 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
9699 | if (ret) | |
9700 | return ret; | |
9701 | ||
9702 | /* create anew and remember what it is */ | |
a02a5408 | 9703 | Newxz(ret, 1, GP); |
1d7c1841 GS |
9704 | ptr_table_store(PL_ptr_table, gp, ret); |
9705 | ||
9706 | /* clone */ | |
9707 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
9708 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
9709 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
9710 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
9711 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
9712 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
9713 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
9714 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 | 9715 | ret->gp_cvgen = gp->gp_cvgen; |
1d7c1841 | 9716 | ret->gp_line = gp->gp_line; |
f4890806 | 9717 | ret->gp_file_hek = hek_dup(gp->gp_file_hek, param); |
1d7c1841 GS |
9718 | return ret; |
9719 | } | |
9720 | ||
645c22ef DM |
9721 | /* duplicate a chain of magic */ |
9722 | ||
1d7c1841 | 9723 | MAGIC * |
a8fc9800 | 9724 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 9725 | { |
cb359b41 JH |
9726 | MAGIC *mgprev = (MAGIC*)NULL; |
9727 | MAGIC *mgret; | |
1d7c1841 GS |
9728 | if (!mg) |
9729 | return (MAGIC*)NULL; | |
9730 | /* look for it in the table first */ | |
9731 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
9732 | if (mgret) | |
9733 | return mgret; | |
9734 | ||
9735 | for (; mg; mg = mg->mg_moremagic) { | |
9736 | MAGIC *nmg; | |
a02a5408 | 9737 | Newxz(nmg, 1, MAGIC); |
cb359b41 | 9738 | if (mgprev) |
1d7c1841 | 9739 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
9740 | else |
9741 | mgret = nmg; | |
1d7c1841 GS |
9742 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
9743 | nmg->mg_private = mg->mg_private; | |
9744 | nmg->mg_type = mg->mg_type; | |
9745 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 9746 | if (mg->mg_type == PERL_MAGIC_qr) { |
f8149455 | 9747 | nmg->mg_obj = (SV*)CALLREGDUPE((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 9748 | } |
05bd4103 | 9749 | else if(mg->mg_type == PERL_MAGIC_backref) { |
d7cbc7b5 NC |
9750 | /* The backref AV has its reference count deliberately bumped by |
9751 | 1. */ | |
9752 | nmg->mg_obj = SvREFCNT_inc(av_dup_inc((AV*) mg->mg_obj, param)); | |
05bd4103 | 9753 | } |
1d7c1841 GS |
9754 | else { |
9755 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
9756 | ? sv_dup_inc(mg->mg_obj, param) |
9757 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
9758 | } |
9759 | nmg->mg_len = mg->mg_len; | |
9760 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 9761 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 9762 | if (mg->mg_len > 0) { |
1d7c1841 | 9763 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
9764 | if (mg->mg_type == PERL_MAGIC_overload_table && |
9765 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
9766 | { | |
c445ea15 | 9767 | const AMT * const amtp = (AMT*)mg->mg_ptr; |
0bcc34c2 | 9768 | AMT * const namtp = (AMT*)nmg->mg_ptr; |
1d7c1841 GS |
9769 | I32 i; |
9770 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 9771 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
9772 | } |
9773 | } | |
9774 | } | |
9775 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 9776 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 9777 | } |
68795e93 NIS |
9778 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
9779 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
9780 | } | |
1d7c1841 GS |
9781 | mgprev = nmg; |
9782 | } | |
9783 | return mgret; | |
9784 | } | |
9785 | ||
4674ade5 NC |
9786 | #endif /* USE_ITHREADS */ |
9787 | ||
645c22ef DM |
9788 | /* create a new pointer-mapping table */ |
9789 | ||
1d7c1841 GS |
9790 | PTR_TBL_t * |
9791 | Perl_ptr_table_new(pTHX) | |
9792 | { | |
9793 | PTR_TBL_t *tbl; | |
96a5add6 AL |
9794 | PERL_UNUSED_CONTEXT; |
9795 | ||
a02a5408 | 9796 | Newxz(tbl, 1, PTR_TBL_t); |
1d7c1841 GS |
9797 | tbl->tbl_max = 511; |
9798 | tbl->tbl_items = 0; | |
a02a5408 | 9799 | Newxz(tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); |
1d7c1841 GS |
9800 | return tbl; |
9801 | } | |
9802 | ||
7119fd33 NC |
9803 | #define PTR_TABLE_HASH(ptr) \ |
9804 | ((PTR2UV(ptr) >> 3) ^ (PTR2UV(ptr) >> (3 + 7)) ^ (PTR2UV(ptr) >> (3 + 17))) | |
134ca3d6 | 9805 | |
93e68bfb JC |
9806 | /* |
9807 | we use the PTE_SVSLOT 'reservation' made above, both here (in the | |
9808 | following define) and at call to new_body_inline made below in | |
9809 | Perl_ptr_table_store() | |
9810 | */ | |
9811 | ||
9812 | #define del_pte(p) del_body_type(p, PTE_SVSLOT) | |
32e691d0 | 9813 | |
645c22ef DM |
9814 | /* map an existing pointer using a table */ |
9815 | ||
7bf61b54 | 9816 | STATIC PTR_TBL_ENT_t * |
b0e6ae5b | 9817 | S_ptr_table_find(PTR_TBL_t *tbl, const void *sv) { |
1d7c1841 | 9818 | PTR_TBL_ENT_t *tblent; |
4373e329 | 9819 | const UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
9820 | assert(tbl); |
9821 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
9822 | for (; tblent; tblent = tblent->next) { | |
9823 | if (tblent->oldval == sv) | |
7bf61b54 | 9824 | return tblent; |
1d7c1841 | 9825 | } |
d4c19fe8 | 9826 | return NULL; |
7bf61b54 NC |
9827 | } |
9828 | ||
9829 | void * | |
9830 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, const void *sv) | |
9831 | { | |
b0e6ae5b | 9832 | PTR_TBL_ENT_t const *const tblent = ptr_table_find(tbl, sv); |
96a5add6 | 9833 | PERL_UNUSED_CONTEXT; |
d4c19fe8 | 9834 | return tblent ? tblent->newval : NULL; |
1d7c1841 GS |
9835 | } |
9836 | ||
645c22ef DM |
9837 | /* add a new entry to a pointer-mapping table */ |
9838 | ||
1d7c1841 | 9839 | void |
44f8325f | 9840 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, const void *oldsv, void *newsv) |
1d7c1841 | 9841 | { |
0c9fdfe0 | 9842 | PTR_TBL_ENT_t *tblent = ptr_table_find(tbl, oldsv); |
96a5add6 | 9843 | PERL_UNUSED_CONTEXT; |
1d7c1841 | 9844 | |
7bf61b54 NC |
9845 | if (tblent) { |
9846 | tblent->newval = newsv; | |
9847 | } else { | |
9848 | const UV entry = PTR_TABLE_HASH(oldsv) & tbl->tbl_max; | |
9849 | ||
d2a0f284 JC |
9850 | new_body_inline(tblent, PTE_SVSLOT); |
9851 | ||
7bf61b54 NC |
9852 | tblent->oldval = oldsv; |
9853 | tblent->newval = newsv; | |
9854 | tblent->next = tbl->tbl_ary[entry]; | |
9855 | tbl->tbl_ary[entry] = tblent; | |
9856 | tbl->tbl_items++; | |
9857 | if (tblent->next && tbl->tbl_items > tbl->tbl_max) | |
9858 | ptr_table_split(tbl); | |
1d7c1841 | 9859 | } |
1d7c1841 GS |
9860 | } |
9861 | ||
645c22ef DM |
9862 | /* double the hash bucket size of an existing ptr table */ |
9863 | ||
1d7c1841 GS |
9864 | void |
9865 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
9866 | { | |
9867 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
4373e329 | 9868 | const UV oldsize = tbl->tbl_max + 1; |
1d7c1841 GS |
9869 | UV newsize = oldsize * 2; |
9870 | UV i; | |
96a5add6 | 9871 | PERL_UNUSED_CONTEXT; |
1d7c1841 GS |
9872 | |
9873 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
9874 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
9875 | tbl->tbl_max = --newsize; | |
9876 | tbl->tbl_ary = ary; | |
9877 | for (i=0; i < oldsize; i++, ary++) { | |
9878 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
9879 | if (!*ary) | |
9880 | continue; | |
9881 | curentp = ary + oldsize; | |
9882 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 9883 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
9884 | *entp = ent->next; |
9885 | ent->next = *curentp; | |
9886 | *curentp = ent; | |
9887 | continue; | |
9888 | } | |
9889 | else | |
9890 | entp = &ent->next; | |
9891 | } | |
9892 | } | |
9893 | } | |
9894 | ||
645c22ef DM |
9895 | /* remove all the entries from a ptr table */ |
9896 | ||
a0739874 DM |
9897 | void |
9898 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
9899 | { | |
d5cefff9 | 9900 | if (tbl && tbl->tbl_items) { |
c445ea15 | 9901 | register PTR_TBL_ENT_t * const * const array = tbl->tbl_ary; |
d5cefff9 | 9902 | UV riter = tbl->tbl_max; |
a0739874 | 9903 | |
d5cefff9 NC |
9904 | do { |
9905 | PTR_TBL_ENT_t *entry = array[riter]; | |
ab1e7f95 | 9906 | |
d5cefff9 | 9907 | while (entry) { |
00b6aa41 | 9908 | PTR_TBL_ENT_t * const oentry = entry; |
d5cefff9 NC |
9909 | entry = entry->next; |
9910 | del_pte(oentry); | |
9911 | } | |
9912 | } while (riter--); | |
a0739874 | 9913 | |
d5cefff9 NC |
9914 | tbl->tbl_items = 0; |
9915 | } | |
a0739874 DM |
9916 | } |
9917 | ||
645c22ef DM |
9918 | /* clear and free a ptr table */ |
9919 | ||
a0739874 DM |
9920 | void |
9921 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
9922 | { | |
9923 | if (!tbl) { | |
9924 | return; | |
9925 | } | |
9926 | ptr_table_clear(tbl); | |
9927 | Safefree(tbl->tbl_ary); | |
9928 | Safefree(tbl); | |
9929 | } | |
9930 | ||
4674ade5 | 9931 | #if defined(USE_ITHREADS) |
5bd07a3d | 9932 | |
83841fad | 9933 | void |
eb86f8b3 | 9934 | Perl_rvpv_dup(pTHX_ SV *dstr, const SV *sstr, CLONE_PARAMS* param) |
83841fad NIS |
9935 | { |
9936 | if (SvROK(sstr)) { | |
b162af07 SP |
9937 | SvRV_set(dstr, SvWEAKREF(sstr) |
9938 | ? sv_dup(SvRV(sstr), param) | |
9939 | : sv_dup_inc(SvRV(sstr), param)); | |
f880fe2f | 9940 | |
83841fad | 9941 | } |
3f7c398e | 9942 | else if (SvPVX_const(sstr)) { |
83841fad NIS |
9943 | /* Has something there */ |
9944 | if (SvLEN(sstr)) { | |
68795e93 | 9945 | /* Normal PV - clone whole allocated space */ |
3f7c398e | 9946 | SvPV_set(dstr, SAVEPVN(SvPVX_const(sstr), SvLEN(sstr)-1)); |
d3d0e6f1 NC |
9947 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
9948 | /* Not that normal - actually sstr is copy on write. | |
9949 | But we are a true, independant SV, so: */ | |
9950 | SvREADONLY_off(dstr); | |
9951 | SvFAKE_off(dstr); | |
9952 | } | |
68795e93 | 9953 | } |
83841fad NIS |
9954 | else { |
9955 | /* Special case - not normally malloced for some reason */ | |
f7877b28 NC |
9956 | if (isGV_with_GP(sstr)) { |
9957 | /* Don't need to do anything here. */ | |
9958 | } | |
9959 | else if ((SvREADONLY(sstr) && SvFAKE(sstr))) { | |
ef10be65 NC |
9960 | /* A "shared" PV - clone it as "shared" PV */ |
9961 | SvPV_set(dstr, | |
9962 | HEK_KEY(hek_dup(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)), | |
9963 | param))); | |
83841fad NIS |
9964 | } |
9965 | else { | |
9966 | /* Some other special case - random pointer */ | |
f880fe2f | 9967 | SvPV_set(dstr, SvPVX(sstr)); |
d3d0e6f1 | 9968 | } |
83841fad NIS |
9969 | } |
9970 | } | |
9971 | else { | |
4608196e | 9972 | /* Copy the NULL */ |
f880fe2f | 9973 | if (SvTYPE(dstr) == SVt_RV) |
b162af07 | 9974 | SvRV_set(dstr, NULL); |
f880fe2f | 9975 | else |
6136c704 | 9976 | SvPV_set(dstr, NULL); |
83841fad NIS |
9977 | } |
9978 | } | |
9979 | ||
662fb8b2 NC |
9980 | /* duplicate an SV of any type (including AV, HV etc) */ |
9981 | ||
1d7c1841 | 9982 | SV * |
eb86f8b3 | 9983 | Perl_sv_dup(pTHX_ const SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 9984 | { |
27da23d5 | 9985 | dVAR; |
1d7c1841 GS |
9986 | SV *dstr; |
9987 | ||
9988 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
6136c704 | 9989 | return NULL; |
1d7c1841 GS |
9990 | /* look for it in the table first */ |
9991 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
9992 | if (dstr) | |
9993 | return dstr; | |
9994 | ||
0405e91e AB |
9995 | if(param->flags & CLONEf_JOIN_IN) { |
9996 | /** We are joining here so we don't want do clone | |
9997 | something that is bad **/ | |
eb86f8b3 AL |
9998 | if (SvTYPE(sstr) == SVt_PVHV) { |
9999 | const char * const hvname = HvNAME_get(sstr); | |
10000 | if (hvname) | |
10001 | /** don't clone stashes if they already exist **/ | |
10002 | return (SV*)gv_stashpv(hvname,0); | |
0405e91e AB |
10003 | } |
10004 | } | |
10005 | ||
1d7c1841 GS |
10006 | /* create anew and remember what it is */ |
10007 | new_SV(dstr); | |
fd0854ff DM |
10008 | |
10009 | #ifdef DEBUG_LEAKING_SCALARS | |
10010 | dstr->sv_debug_optype = sstr->sv_debug_optype; | |
10011 | dstr->sv_debug_line = sstr->sv_debug_line; | |
10012 | dstr->sv_debug_inpad = sstr->sv_debug_inpad; | |
10013 | dstr->sv_debug_cloned = 1; | |
fd0854ff | 10014 | dstr->sv_debug_file = savepv(sstr->sv_debug_file); |
fd0854ff DM |
10015 | #endif |
10016 | ||
1d7c1841 GS |
10017 | ptr_table_store(PL_ptr_table, sstr, dstr); |
10018 | ||
10019 | /* clone */ | |
10020 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
10021 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
10022 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
10023 | ||
10024 | #ifdef DEBUGGING | |
3f7c398e | 10025 | if (SvANY(sstr) && PL_watch_pvx && SvPVX_const(sstr) == PL_watch_pvx) |
1d7c1841 | 10026 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", |
6c9570dc | 10027 | (void*)PL_watch_pvx, SvPVX_const(sstr)); |
1d7c1841 GS |
10028 | #endif |
10029 | ||
9660f481 DM |
10030 | /* don't clone objects whose class has asked us not to */ |
10031 | if (SvOBJECT(sstr) && ! (SvFLAGS(SvSTASH(sstr)) & SVphv_CLONEABLE)) { | |
10032 | SvFLAGS(dstr) &= ~SVTYPEMASK; | |
10033 | SvOBJECT_off(dstr); | |
10034 | return dstr; | |
10035 | } | |
10036 | ||
1d7c1841 GS |
10037 | switch (SvTYPE(sstr)) { |
10038 | case SVt_NULL: | |
10039 | SvANY(dstr) = NULL; | |
10040 | break; | |
10041 | case SVt_IV: | |
339049b0 | 10042 | SvANY(dstr) = (XPVIV*)((char*)&(dstr->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
45977657 | 10043 | SvIV_set(dstr, SvIVX(sstr)); |
1d7c1841 GS |
10044 | break; |
10045 | case SVt_NV: | |
10046 | SvANY(dstr) = new_XNV(); | |
9d6ce603 | 10047 | SvNV_set(dstr, SvNVX(sstr)); |
1d7c1841 GS |
10048 | break; |
10049 | case SVt_RV: | |
339049b0 | 10050 | SvANY(dstr) = &(dstr->sv_u.svu_rv); |
83841fad | 10051 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 | 10052 | break; |
cecf5685 | 10053 | /* case SVt_BIND: */ |
662fb8b2 NC |
10054 | default: |
10055 | { | |
10056 | /* These are all the types that need complex bodies allocating. */ | |
662fb8b2 | 10057 | void *new_body; |
2bcc16b3 NC |
10058 | const svtype sv_type = SvTYPE(sstr); |
10059 | const struct body_details *const sv_type_details | |
10060 | = bodies_by_type + sv_type; | |
662fb8b2 | 10061 | |
93e68bfb | 10062 | switch (sv_type) { |
662fb8b2 | 10063 | default: |
bb263b4e | 10064 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", (IV)SvTYPE(sstr)); |
662fb8b2 NC |
10065 | break; |
10066 | ||
662fb8b2 NC |
10067 | case SVt_PVGV: |
10068 | if (GvUNIQUE((GV*)sstr)) { | |
6f207bd3 | 10069 | NOOP; /* Do sharing here, and fall through */ |
662fb8b2 | 10070 | } |
c22188b4 NC |
10071 | case SVt_PVIO: |
10072 | case SVt_PVFM: | |
10073 | case SVt_PVHV: | |
10074 | case SVt_PVAV: | |
662fb8b2 | 10075 | case SVt_PVCV: |
662fb8b2 | 10076 | case SVt_PVLV: |
662fb8b2 | 10077 | case SVt_PVMG: |
662fb8b2 | 10078 | case SVt_PVNV: |
662fb8b2 | 10079 | case SVt_PVIV: |
662fb8b2 | 10080 | case SVt_PV: |
d2a0f284 | 10081 | assert(sv_type_details->body_size); |
c22188b4 | 10082 | if (sv_type_details->arena) { |
d2a0f284 | 10083 | new_body_inline(new_body, sv_type); |
c22188b4 | 10084 | new_body |
b9502f15 | 10085 | = (void*)((char*)new_body - sv_type_details->offset); |
c22188b4 NC |
10086 | } else { |
10087 | new_body = new_NOARENA(sv_type_details); | |
10088 | } | |
1d7c1841 | 10089 | } |
662fb8b2 NC |
10090 | assert(new_body); |
10091 | SvANY(dstr) = new_body; | |
10092 | ||
2bcc16b3 | 10093 | #ifndef PURIFY |
b9502f15 NC |
10094 | Copy(((char*)SvANY(sstr)) + sv_type_details->offset, |
10095 | ((char*)SvANY(dstr)) + sv_type_details->offset, | |
f32993d6 | 10096 | sv_type_details->copy, char); |
2bcc16b3 NC |
10097 | #else |
10098 | Copy(((char*)SvANY(sstr)), | |
10099 | ((char*)SvANY(dstr)), | |
d2a0f284 | 10100 | sv_type_details->body_size + sv_type_details->offset, char); |
2bcc16b3 | 10101 | #endif |
662fb8b2 | 10102 | |
f7877b28 NC |
10103 | if (sv_type != SVt_PVAV && sv_type != SVt_PVHV |
10104 | && !isGV_with_GP(dstr)) | |
662fb8b2 NC |
10105 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
10106 | ||
10107 | /* The Copy above means that all the source (unduplicated) pointers | |
10108 | are now in the destination. We can check the flags and the | |
10109 | pointers in either, but it's possible that there's less cache | |
10110 | missing by always going for the destination. | |
10111 | FIXME - instrument and check that assumption */ | |
f32993d6 | 10112 | if (sv_type >= SVt_PVMG) { |
885ffcb3 | 10113 | if ((sv_type == SVt_PVMG) && SvPAD_OUR(dstr)) { |
73d95100 | 10114 | SvOURSTASH_set(dstr, hv_dup_inc(SvOURSTASH(dstr), param)); |
e736a858 | 10115 | } else if (SvMAGIC(dstr)) |
662fb8b2 NC |
10116 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(dstr), param)); |
10117 | if (SvSTASH(dstr)) | |
10118 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(dstr), param)); | |
1d7c1841 | 10119 | } |
662fb8b2 | 10120 | |
f32993d6 NC |
10121 | /* The cast silences a GCC warning about unhandled types. */ |
10122 | switch ((int)sv_type) { | |
662fb8b2 NC |
10123 | case SVt_PV: |
10124 | break; | |
10125 | case SVt_PVIV: | |
10126 | break; | |
10127 | case SVt_PVNV: | |
10128 | break; | |
10129 | case SVt_PVMG: | |
10130 | break; | |
662fb8b2 NC |
10131 | case SVt_PVLV: |
10132 | /* XXX LvTARGOFF sometimes holds PMOP* when DEBUGGING */ | |
10133 | if (LvTYPE(dstr) == 't') /* for tie: unrefcnted fake (SV**) */ | |
10134 | LvTARG(dstr) = dstr; | |
10135 | else if (LvTYPE(dstr) == 'T') /* for tie: fake HE */ | |
10136 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(dstr), 0, param); | |
10137 | else | |
10138 | LvTARG(dstr) = sv_dup_inc(LvTARG(dstr), param); | |
662fb8b2 | 10139 | case SVt_PVGV: |
cecf5685 NC |
10140 | if(isGV_with_GP(sstr)) { |
10141 | if (GvNAME_HEK(dstr)) | |
10142 | GvNAME_HEK(dstr) = hek_dup(GvNAME_HEK(dstr), param); | |
39cb70dc NC |
10143 | /* Don't call sv_add_backref here as it's going to be |
10144 | created as part of the magic cloning of the symbol | |
10145 | table. */ | |
f7877b28 NC |
10146 | /* Danger Will Robinson - GvGP(dstr) isn't initialised |
10147 | at the point of this comment. */ | |
39cb70dc | 10148 | GvSTASH(dstr) = hv_dup(GvSTASH(dstr), param); |
f7877b28 NC |
10149 | GvGP(dstr) = gp_dup(GvGP(sstr), param); |
10150 | (void)GpREFCNT_inc(GvGP(dstr)); | |
10151 | } else | |
10152 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); | |
662fb8b2 NC |
10153 | break; |
10154 | case SVt_PVIO: | |
10155 | IoIFP(dstr) = fp_dup(IoIFP(dstr), IoTYPE(dstr), param); | |
10156 | if (IoOFP(dstr) == IoIFP(sstr)) | |
10157 | IoOFP(dstr) = IoIFP(dstr); | |
10158 | else | |
10159 | IoOFP(dstr) = fp_dup(IoOFP(dstr), IoTYPE(dstr), param); | |
5486870f | 10160 | /* PL_parser->rsfp_filters entries have fake IoDIRP() */ |
662fb8b2 NC |
10161 | if(IoFLAGS(dstr) & IOf_FAKE_DIRP) { |
10162 | /* I have no idea why fake dirp (rsfps) | |
10163 | should be treated differently but otherwise | |
10164 | we end up with leaks -- sky*/ | |
10165 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(dstr), param); | |
10166 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(dstr), param); | |
10167 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(dstr), param); | |
10168 | } else { | |
10169 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(dstr), param); | |
10170 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(dstr), param); | |
10171 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(dstr), param); | |
100ce7e1 NC |
10172 | if (IoDIRP(dstr)) { |
10173 | IoDIRP(dstr) = dirp_dup(IoDIRP(dstr)); | |
10174 | } else { | |
6f207bd3 | 10175 | NOOP; |
100ce7e1 NC |
10176 | /* IoDIRP(dstr) is already a copy of IoDIRP(sstr) */ |
10177 | } | |
662fb8b2 NC |
10178 | } |
10179 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(dstr)); | |
10180 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(dstr)); | |
10181 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(dstr)); | |
10182 | break; | |
10183 | case SVt_PVAV: | |
10184 | if (AvARRAY((AV*)sstr)) { | |
10185 | SV **dst_ary, **src_ary; | |
10186 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10187 | ||
10188 | src_ary = AvARRAY((AV*)sstr); | |
a02a5408 | 10189 | Newxz(dst_ary, AvMAX((AV*)sstr)+1, SV*); |
662fb8b2 | 10190 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); |
9c6bc640 | 10191 | AvARRAY((AV*)dstr) = dst_ary; |
662fb8b2 NC |
10192 | AvALLOC((AV*)dstr) = dst_ary; |
10193 | if (AvREAL((AV*)sstr)) { | |
10194 | while (items-- > 0) | |
10195 | *dst_ary++ = sv_dup_inc(*src_ary++, param); | |
10196 | } | |
10197 | else { | |
10198 | while (items-- > 0) | |
10199 | *dst_ary++ = sv_dup(*src_ary++, param); | |
10200 | } | |
10201 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10202 | while (items-- > 0) { | |
10203 | *dst_ary++ = &PL_sv_undef; | |
10204 | } | |
bfcb3514 | 10205 | } |
662fb8b2 | 10206 | else { |
9c6bc640 | 10207 | AvARRAY((AV*)dstr) = NULL; |
662fb8b2 | 10208 | AvALLOC((AV*)dstr) = (SV**)NULL; |
b79f7545 | 10209 | } |
662fb8b2 NC |
10210 | break; |
10211 | case SVt_PVHV: | |
7e265ef3 AL |
10212 | if (HvARRAY((HV*)sstr)) { |
10213 | STRLEN i = 0; | |
10214 | const bool sharekeys = !!HvSHAREKEYS(sstr); | |
10215 | XPVHV * const dxhv = (XPVHV*)SvANY(dstr); | |
10216 | XPVHV * const sxhv = (XPVHV*)SvANY(sstr); | |
10217 | char *darray; | |
10218 | Newx(darray, PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1) | |
10219 | + (SvOOK(sstr) ? sizeof(struct xpvhv_aux) : 0), | |
10220 | char); | |
10221 | HvARRAY(dstr) = (HE**)darray; | |
10222 | while (i <= sxhv->xhv_max) { | |
10223 | const HE * const source = HvARRAY(sstr)[i]; | |
10224 | HvARRAY(dstr)[i] = source | |
10225 | ? he_dup(source, sharekeys, param) : 0; | |
10226 | ++i; | |
10227 | } | |
10228 | if (SvOOK(sstr)) { | |
10229 | HEK *hvname; | |
10230 | const struct xpvhv_aux * const saux = HvAUX(sstr); | |
10231 | struct xpvhv_aux * const daux = HvAUX(dstr); | |
10232 | /* This flag isn't copied. */ | |
10233 | /* SvOOK_on(hv) attacks the IV flags. */ | |
10234 | SvFLAGS(dstr) |= SVf_OOK; | |
10235 | ||
10236 | hvname = saux->xhv_name; | |
10237 | daux->xhv_name = hvname ? hek_dup(hvname, param) : hvname; | |
10238 | ||
10239 | daux->xhv_riter = saux->xhv_riter; | |
10240 | daux->xhv_eiter = saux->xhv_eiter | |
10241 | ? he_dup(saux->xhv_eiter, | |
10242 | (bool)!!HvSHAREKEYS(sstr), param) : 0; | |
10243 | daux->xhv_backreferences = | |
10244 | saux->xhv_backreferences | |
86f55936 | 10245 | ? (AV*) SvREFCNT_inc( |
7e265ef3 | 10246 | sv_dup((SV*)saux->xhv_backreferences, param)) |
86f55936 | 10247 | : 0; |
e1a479c5 BB |
10248 | |
10249 | daux->xhv_mro_meta = saux->xhv_mro_meta | |
10250 | ? mro_meta_dup(saux->xhv_mro_meta, param) | |
10251 | : 0; | |
10252 | ||
7e265ef3 AL |
10253 | /* Record stashes for possible cloning in Perl_clone(). */ |
10254 | if (hvname) | |
10255 | av_push(param->stashes, dstr); | |
662fb8b2 | 10256 | } |
662fb8b2 | 10257 | } |
7e265ef3 | 10258 | else |
797c7171 | 10259 | HvARRAY((HV*)dstr) = NULL; |
662fb8b2 | 10260 | break; |
662fb8b2 | 10261 | case SVt_PVCV: |
bb172083 NC |
10262 | if (!(param->flags & CLONEf_COPY_STACKS)) { |
10263 | CvDEPTH(dstr) = 0; | |
10264 | } | |
10265 | case SVt_PVFM: | |
662fb8b2 NC |
10266 | /* NOTE: not refcounted */ |
10267 | CvSTASH(dstr) = hv_dup(CvSTASH(dstr), param); | |
10268 | OP_REFCNT_LOCK; | |
d04ba589 NC |
10269 | if (!CvISXSUB(dstr)) |
10270 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(dstr)); | |
662fb8b2 | 10271 | OP_REFCNT_UNLOCK; |
cfae286e | 10272 | if (CvCONST(dstr) && CvISXSUB(dstr)) { |
662fb8b2 NC |
10273 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(dstr)) ? |
10274 | SvREFCNT_inc(CvXSUBANY(dstr).any_ptr) : | |
10275 | sv_dup_inc((SV *)CvXSUBANY(dstr).any_ptr, param); | |
10276 | } | |
10277 | /* don't dup if copying back - CvGV isn't refcounted, so the | |
10278 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
10279 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
a0714e2c | 10280 | NULL : gv_dup(CvGV(dstr), param) ; |
662fb8b2 NC |
10281 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); |
10282 | CvOUTSIDE(dstr) = | |
10283 | CvWEAKOUTSIDE(sstr) | |
10284 | ? cv_dup( CvOUTSIDE(dstr), param) | |
10285 | : cv_dup_inc(CvOUTSIDE(dstr), param); | |
aed2304a | 10286 | if (!CvISXSUB(dstr)) |
662fb8b2 NC |
10287 | CvFILE(dstr) = SAVEPV(CvFILE(dstr)); |
10288 | break; | |
bfcb3514 | 10289 | } |
1d7c1841 | 10290 | } |
1d7c1841 GS |
10291 | } |
10292 | ||
10293 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
10294 | ++PL_sv_objcount; | |
10295 | ||
10296 | return dstr; | |
d2d73c3e | 10297 | } |
1d7c1841 | 10298 | |
645c22ef DM |
10299 | /* duplicate a context */ |
10300 | ||
1d7c1841 | 10301 | PERL_CONTEXT * |
a8fc9800 | 10302 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
10303 | { |
10304 | PERL_CONTEXT *ncxs; | |
10305 | ||
10306 | if (!cxs) | |
10307 | return (PERL_CONTEXT*)NULL; | |
10308 | ||
10309 | /* look for it in the table first */ | |
10310 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
10311 | if (ncxs) | |
10312 | return ncxs; | |
10313 | ||
10314 | /* create anew and remember what it is */ | |
a02a5408 | 10315 | Newxz(ncxs, max + 1, PERL_CONTEXT); |
1d7c1841 GS |
10316 | ptr_table_store(PL_ptr_table, cxs, ncxs); |
10317 | ||
10318 | while (ix >= 0) { | |
c445ea15 AL |
10319 | PERL_CONTEXT * const cx = &cxs[ix]; |
10320 | PERL_CONTEXT * const ncx = &ncxs[ix]; | |
1d7c1841 GS |
10321 | ncx->cx_type = cx->cx_type; |
10322 | if (CxTYPE(cx) == CXt_SUBST) { | |
10323 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
10324 | } | |
10325 | else { | |
10326 | ncx->blk_oldsp = cx->blk_oldsp; | |
10327 | ncx->blk_oldcop = cx->blk_oldcop; | |
1d7c1841 GS |
10328 | ncx->blk_oldmarksp = cx->blk_oldmarksp; |
10329 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
10330 | ncx->blk_oldpm = cx->blk_oldpm; | |
10331 | ncx->blk_gimme = cx->blk_gimme; | |
10332 | switch (CxTYPE(cx)) { | |
10333 | case CXt_SUB: | |
10334 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
10335 | ? cv_dup_inc(cx->blk_sub.cv, param) |
10336 | : cv_dup(cx->blk_sub.cv,param)); | |
cc8d50a7 | 10337 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 10338 | ? av_dup_inc(cx->blk_sub.argarray, param) |
7d49f689 | 10339 | : NULL); |
d2d73c3e | 10340 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 | 10341 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
cc8d50a7 NC |
10342 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
10343 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
f39bc417 | 10344 | ncx->blk_sub.retop = cx->blk_sub.retop; |
d8d97e70 DM |
10345 | ncx->blk_sub.oldcomppad = (PAD*)ptr_table_fetch(PL_ptr_table, |
10346 | cx->blk_sub.oldcomppad); | |
1d7c1841 GS |
10347 | break; |
10348 | case CXt_EVAL: | |
10349 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
10350 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 10351 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 10352 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 10353 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
f39bc417 | 10354 | ncx->blk_eval.retop = cx->blk_eval.retop; |
1d7c1841 GS |
10355 | break; |
10356 | case CXt_LOOP: | |
10357 | ncx->blk_loop.label = cx->blk_loop.label; | |
10358 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
022eaa24 | 10359 | ncx->blk_loop.my_op = cx->blk_loop.my_op; |
1d7c1841 GS |
10360 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) |
10361 | ? cx->blk_loop.iterdata | |
d2d73c3e | 10362 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
10363 | ncx->blk_loop.oldcomppad |
10364 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
10365 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
10366 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
10367 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
10368 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
10369 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
10370 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
10371 | break; | |
10372 | case CXt_FORMAT: | |
d2d73c3e AB |
10373 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
10374 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
10375 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
cc8d50a7 | 10376 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
f39bc417 | 10377 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
10378 | break; |
10379 | case CXt_BLOCK: | |
10380 | case CXt_NULL: | |
10381 | break; | |
10382 | } | |
10383 | } | |
10384 | --ix; | |
10385 | } | |
10386 | return ncxs; | |
10387 | } | |
10388 | ||
645c22ef DM |
10389 | /* duplicate a stack info structure */ |
10390 | ||
1d7c1841 | 10391 | PERL_SI * |
a8fc9800 | 10392 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
10393 | { |
10394 | PERL_SI *nsi; | |
10395 | ||
10396 | if (!si) | |
10397 | return (PERL_SI*)NULL; | |
10398 | ||
10399 | /* look for it in the table first */ | |
10400 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
10401 | if (nsi) | |
10402 | return nsi; | |
10403 | ||
10404 | /* create anew and remember what it is */ | |
a02a5408 | 10405 | Newxz(nsi, 1, PERL_SI); |
1d7c1841 GS |
10406 | ptr_table_store(PL_ptr_table, si, nsi); |
10407 | ||
d2d73c3e | 10408 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
10409 | nsi->si_cxix = si->si_cxix; |
10410 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 10411 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 10412 | nsi->si_type = si->si_type; |
d2d73c3e AB |
10413 | nsi->si_prev = si_dup(si->si_prev, param); |
10414 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
10415 | nsi->si_markoff = si->si_markoff; |
10416 | ||
10417 | return nsi; | |
10418 | } | |
10419 | ||
10420 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
10421 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
10422 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
10423 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
10424 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
10425 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
10426 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
10427 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
10428 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
10429 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
10430 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
10431 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
10432 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
10433 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
10434 | ||
10435 | /* XXXXX todo */ | |
10436 | #define pv_dup_inc(p) SAVEPV(p) | |
10437 | #define pv_dup(p) SAVEPV(p) | |
10438 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
10439 | ||
645c22ef DM |
10440 | /* map any object to the new equivent - either something in the |
10441 | * ptr table, or something in the interpreter structure | |
10442 | */ | |
10443 | ||
1d7c1841 | 10444 | void * |
53c1dcc0 | 10445 | Perl_any_dup(pTHX_ void *v, const PerlInterpreter *proto_perl) |
1d7c1841 GS |
10446 | { |
10447 | void *ret; | |
10448 | ||
10449 | if (!v) | |
10450 | return (void*)NULL; | |
10451 | ||
10452 | /* look for it in the table first */ | |
10453 | ret = ptr_table_fetch(PL_ptr_table, v); | |
10454 | if (ret) | |
10455 | return ret; | |
10456 | ||
10457 | /* see if it is part of the interpreter structure */ | |
10458 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 10459 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 10460 | else { |
1d7c1841 | 10461 | ret = v; |
05ec9bb3 | 10462 | } |
1d7c1841 GS |
10463 | |
10464 | return ret; | |
10465 | } | |
10466 | ||
645c22ef DM |
10467 | /* duplicate the save stack */ |
10468 | ||
1d7c1841 | 10469 | ANY * |
a8fc9800 | 10470 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 | 10471 | { |
53d44271 | 10472 | dVAR; |
907b3e23 DM |
10473 | ANY * const ss = proto_perl->Isavestack; |
10474 | const I32 max = proto_perl->Isavestack_max; | |
10475 | I32 ix = proto_perl->Isavestack_ix; | |
1d7c1841 GS |
10476 | ANY *nss; |
10477 | SV *sv; | |
10478 | GV *gv; | |
10479 | AV *av; | |
10480 | HV *hv; | |
10481 | void* ptr; | |
10482 | int intval; | |
10483 | long longval; | |
10484 | GP *gp; | |
10485 | IV iv; | |
b24356f5 | 10486 | I32 i; |
c4e33207 | 10487 | char *c = NULL; |
1d7c1841 | 10488 | void (*dptr) (void*); |
acfe0abc | 10489 | void (*dxptr) (pTHX_ void*); |
1d7c1841 | 10490 | |
a02a5408 | 10491 | Newxz(nss, max, ANY); |
1d7c1841 GS |
10492 | |
10493 | while (ix > 0) { | |
b24356f5 NC |
10494 | const I32 type = POPINT(ss,ix); |
10495 | TOPINT(nss,ix) = type; | |
10496 | switch (type) { | |
3e07292d NC |
10497 | case SAVEt_HELEM: /* hash element */ |
10498 | sv = (SV*)POPPTR(ss,ix); | |
10499 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); | |
10500 | /* fall through */ | |
1d7c1841 | 10501 | case SAVEt_ITEM: /* normal string */ |
a41cc44e | 10502 | case SAVEt_SV: /* scalar reference */ |
1d7c1841 | 10503 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10504 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
3e07292d NC |
10505 | /* fall through */ |
10506 | case SAVEt_FREESV: | |
10507 | case SAVEt_MORTALIZESV: | |
1d7c1841 | 10508 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10509 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10510 | break; |
05ec9bb3 NIS |
10511 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
10512 | c = (char*)POPPTR(ss,ix); | |
10513 | TOPPTR(nss,ix) = savesharedpv(c); | |
10514 | ptr = POPPTR(ss,ix); | |
10515 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10516 | break; | |
1d7c1841 GS |
10517 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
10518 | case SAVEt_SVREF: /* scalar reference */ | |
10519 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10520 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10521 | ptr = POPPTR(ss,ix); |
10522 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
10523 | break; | |
a41cc44e | 10524 | case SAVEt_HV: /* hash reference */ |
1d7c1841 | 10525 | case SAVEt_AV: /* array reference */ |
11b79775 | 10526 | sv = (SV*) POPPTR(ss,ix); |
337d28f5 | 10527 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
3e07292d NC |
10528 | /* fall through */ |
10529 | case SAVEt_COMPPAD: | |
10530 | case SAVEt_NSTAB: | |
667e2948 | 10531 | sv = (SV*) POPPTR(ss,ix); |
3e07292d | 10532 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
10533 | break; |
10534 | case SAVEt_INT: /* int reference */ | |
10535 | ptr = POPPTR(ss,ix); | |
10536 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10537 | intval = (int)POPINT(ss,ix); | |
10538 | TOPINT(nss,ix) = intval; | |
10539 | break; | |
10540 | case SAVEt_LONG: /* long reference */ | |
10541 | ptr = POPPTR(ss,ix); | |
10542 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
3e07292d NC |
10543 | /* fall through */ |
10544 | case SAVEt_CLEARSV: | |
1d7c1841 GS |
10545 | longval = (long)POPLONG(ss,ix); |
10546 | TOPLONG(nss,ix) = longval; | |
10547 | break; | |
10548 | case SAVEt_I32: /* I32 reference */ | |
10549 | case SAVEt_I16: /* I16 reference */ | |
10550 | case SAVEt_I8: /* I8 reference */ | |
88effcc9 | 10551 | case SAVEt_COP_ARYBASE: /* call CopARYBASE_set */ |
1d7c1841 GS |
10552 | ptr = POPPTR(ss,ix); |
10553 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
1ccabee8 | 10554 | i = POPINT(ss,ix); |
1d7c1841 GS |
10555 | TOPINT(nss,ix) = i; |
10556 | break; | |
10557 | case SAVEt_IV: /* IV reference */ | |
10558 | ptr = POPPTR(ss,ix); | |
10559 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10560 | iv = POPIV(ss,ix); | |
10561 | TOPIV(nss,ix) = iv; | |
10562 | break; | |
a41cc44e NC |
10563 | case SAVEt_HPTR: /* HV* reference */ |
10564 | case SAVEt_APTR: /* AV* reference */ | |
1d7c1841 GS |
10565 | case SAVEt_SPTR: /* SV* reference */ |
10566 | ptr = POPPTR(ss,ix); | |
10567 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10568 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10569 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
10570 | break; |
10571 | case SAVEt_VPTR: /* random* reference */ | |
10572 | ptr = POPPTR(ss,ix); | |
10573 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10574 | ptr = POPPTR(ss,ix); | |
10575 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10576 | break; | |
b03d03b0 | 10577 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
1d7c1841 GS |
10578 | case SAVEt_PPTR: /* char* reference */ |
10579 | ptr = POPPTR(ss,ix); | |
10580 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10581 | c = (char*)POPPTR(ss,ix); | |
10582 | TOPPTR(nss,ix) = pv_dup(c); | |
10583 | break; | |
1d7c1841 GS |
10584 | case SAVEt_GP: /* scalar reference */ |
10585 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 10586 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
10587 | (void)GpREFCNT_inc(gp); |
10588 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 10589 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 10590 | break; |
1d7c1841 GS |
10591 | case SAVEt_FREEOP: |
10592 | ptr = POPPTR(ss,ix); | |
10593 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
10594 | /* these are assumed to be refcounted properly */ | |
53c1dcc0 | 10595 | OP *o; |
1d7c1841 GS |
10596 | switch (((OP*)ptr)->op_type) { |
10597 | case OP_LEAVESUB: | |
10598 | case OP_LEAVESUBLV: | |
10599 | case OP_LEAVEEVAL: | |
10600 | case OP_LEAVE: | |
10601 | case OP_SCOPE: | |
10602 | case OP_LEAVEWRITE: | |
e977893f GS |
10603 | TOPPTR(nss,ix) = ptr; |
10604 | o = (OP*)ptr; | |
d3c72c2a | 10605 | OP_REFCNT_LOCK; |
594cd643 | 10606 | (void) OpREFCNT_inc(o); |
d3c72c2a | 10607 | OP_REFCNT_UNLOCK; |
1d7c1841 GS |
10608 | break; |
10609 | default: | |
5f66b61c | 10610 | TOPPTR(nss,ix) = NULL; |
1d7c1841 GS |
10611 | break; |
10612 | } | |
10613 | } | |
10614 | else | |
5f66b61c | 10615 | TOPPTR(nss,ix) = NULL; |
1d7c1841 GS |
10616 | break; |
10617 | case SAVEt_FREEPV: | |
10618 | c = (char*)POPPTR(ss,ix); | |
10619 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
10620 | break; | |
1d7c1841 GS |
10621 | case SAVEt_DELETE: |
10622 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10623 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
10624 | c = (char*)POPPTR(ss,ix); |
10625 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
3e07292d NC |
10626 | /* fall through */ |
10627 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
1d7c1841 GS |
10628 | i = POPINT(ss,ix); |
10629 | TOPINT(nss,ix) = i; | |
10630 | break; | |
10631 | case SAVEt_DESTRUCTOR: | |
10632 | ptr = POPPTR(ss,ix); | |
10633 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10634 | dptr = POPDPTR(ss,ix); | |
8141890a JH |
10635 | TOPDPTR(nss,ix) = DPTR2FPTR(void (*)(void*), |
10636 | any_dup(FPTR2DPTR(void *, dptr), | |
10637 | proto_perl)); | |
1d7c1841 GS |
10638 | break; |
10639 | case SAVEt_DESTRUCTOR_X: | |
10640 | ptr = POPPTR(ss,ix); | |
10641 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10642 | dxptr = POPDXPTR(ss,ix); | |
8141890a JH |
10643 | TOPDXPTR(nss,ix) = DPTR2FPTR(void (*)(pTHX_ void*), |
10644 | any_dup(FPTR2DPTR(void *, dxptr), | |
10645 | proto_perl)); | |
1d7c1841 GS |
10646 | break; |
10647 | case SAVEt_REGCONTEXT: | |
10648 | case SAVEt_ALLOC: | |
10649 | i = POPINT(ss,ix); | |
10650 | TOPINT(nss,ix) = i; | |
10651 | ix -= i; | |
10652 | break; | |
1d7c1841 GS |
10653 | case SAVEt_AELEM: /* array element */ |
10654 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10655 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10656 | i = POPINT(ss,ix); |
10657 | TOPINT(nss,ix) = i; | |
10658 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10659 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 10660 | break; |
1d7c1841 GS |
10661 | case SAVEt_OP: |
10662 | ptr = POPPTR(ss,ix); | |
10663 | TOPPTR(nss,ix) = ptr; | |
10664 | break; | |
10665 | case SAVEt_HINTS: | |
10666 | i = POPINT(ss,ix); | |
10667 | TOPINT(nss,ix) = i; | |
b3ca2e83 | 10668 | ptr = POPPTR(ss,ix); |
080ac856 | 10669 | if (ptr) { |
7b6dd8c3 | 10670 | HINTS_REFCNT_LOCK; |
080ac856 | 10671 | ((struct refcounted_he *)ptr)->refcounted_he_refcnt++; |
7b6dd8c3 NC |
10672 | HINTS_REFCNT_UNLOCK; |
10673 | } | |
cbb1fbea | 10674 | TOPPTR(nss,ix) = ptr; |
a8f8b6a7 NC |
10675 | if (i & HINT_LOCALIZE_HH) { |
10676 | hv = (HV*)POPPTR(ss,ix); | |
10677 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); | |
10678 | } | |
1d7c1841 | 10679 | break; |
c3564e5c GS |
10680 | case SAVEt_PADSV: |
10681 | longval = (long)POPLONG(ss,ix); | |
10682 | TOPLONG(nss,ix) = longval; | |
10683 | ptr = POPPTR(ss,ix); | |
10684 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10685 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10686 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 10687 | break; |
a1bb4754 | 10688 | case SAVEt_BOOL: |
38d8b13e | 10689 | ptr = POPPTR(ss,ix); |
b9609c01 | 10690 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 10691 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 10692 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 10693 | break; |
8bd2680e MHM |
10694 | case SAVEt_SET_SVFLAGS: |
10695 | i = POPINT(ss,ix); | |
10696 | TOPINT(nss,ix) = i; | |
10697 | i = POPINT(ss,ix); | |
10698 | TOPINT(nss,ix) = i; | |
10699 | sv = (SV*)POPPTR(ss,ix); | |
10700 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
10701 | break; | |
5bfb7d0e NC |
10702 | case SAVEt_RE_STATE: |
10703 | { | |
10704 | const struct re_save_state *const old_state | |
10705 | = (struct re_save_state *) | |
10706 | (ss + ix - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE); | |
10707 | struct re_save_state *const new_state | |
10708 | = (struct re_save_state *) | |
10709 | (nss + ix - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE); | |
10710 | ||
10711 | Copy(old_state, new_state, 1, struct re_save_state); | |
10712 | ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE; | |
10713 | ||
10714 | new_state->re_state_bostr | |
10715 | = pv_dup(old_state->re_state_bostr); | |
10716 | new_state->re_state_reginput | |
10717 | = pv_dup(old_state->re_state_reginput); | |
5bfb7d0e NC |
10718 | new_state->re_state_regeol |
10719 | = pv_dup(old_state->re_state_regeol); | |
f0ab9afb NC |
10720 | new_state->re_state_regoffs |
10721 | = (regexp_paren_pair*) | |
10722 | any_dup(old_state->re_state_regoffs, proto_perl); | |
5bfb7d0e | 10723 | new_state->re_state_reglastparen |
11b79775 DD |
10724 | = (U32*) any_dup(old_state->re_state_reglastparen, |
10725 | proto_perl); | |
5bfb7d0e | 10726 | new_state->re_state_reglastcloseparen |
11b79775 | 10727 | = (U32*)any_dup(old_state->re_state_reglastcloseparen, |
5bfb7d0e | 10728 | proto_perl); |
5bfb7d0e NC |
10729 | /* XXX This just has to be broken. The old save_re_context |
10730 | code did SAVEGENERICPV(PL_reg_start_tmp); | |
10731 | PL_reg_start_tmp is char **. | |
10732 | Look above to what the dup code does for | |
10733 | SAVEt_GENERIC_PVREF | |
10734 | It can never have worked. | |
10735 | So this is merely a faithful copy of the exiting bug: */ | |
10736 | new_state->re_state_reg_start_tmp | |
10737 | = (char **) pv_dup((char *) | |
10738 | old_state->re_state_reg_start_tmp); | |
10739 | /* I assume that it only ever "worked" because no-one called | |
10740 | (pseudo)fork while the regexp engine had re-entered itself. | |
10741 | */ | |
5bfb7d0e NC |
10742 | #ifdef PERL_OLD_COPY_ON_WRITE |
10743 | new_state->re_state_nrs | |
10744 | = sv_dup(old_state->re_state_nrs, param); | |
10745 | #endif | |
10746 | new_state->re_state_reg_magic | |
11b79775 DD |
10747 | = (MAGIC*) any_dup(old_state->re_state_reg_magic, |
10748 | proto_perl); | |
5bfb7d0e | 10749 | new_state->re_state_reg_oldcurpm |
11b79775 DD |
10750 | = (PMOP*) any_dup(old_state->re_state_reg_oldcurpm, |
10751 | proto_perl); | |
5bfb7d0e | 10752 | new_state->re_state_reg_curpm |
11b79775 DD |
10753 | = (PMOP*) any_dup(old_state->re_state_reg_curpm, |
10754 | proto_perl); | |
5bfb7d0e NC |
10755 | new_state->re_state_reg_oldsaved |
10756 | = pv_dup(old_state->re_state_reg_oldsaved); | |
10757 | new_state->re_state_reg_poscache | |
10758 | = pv_dup(old_state->re_state_reg_poscache); | |
5bfb7d0e NC |
10759 | new_state->re_state_reg_starttry |
10760 | = pv_dup(old_state->re_state_reg_starttry); | |
5bfb7d0e NC |
10761 | break; |
10762 | } | |
68da3b2f NC |
10763 | case SAVEt_COMPILE_WARNINGS: |
10764 | ptr = POPPTR(ss,ix); | |
10765 | TOPPTR(nss,ix) = DUP_WARNINGS((STRLEN*)ptr); | |
7b6dd8c3 | 10766 | break; |
7c197c94 DM |
10767 | case SAVEt_PARSER: |
10768 | ptr = POPPTR(ss,ix); | |
456084a8 | 10769 | TOPPTR(nss,ix) = parser_dup((const yy_parser*)ptr, param); |
7c197c94 | 10770 | break; |
1d7c1841 | 10771 | default: |
147bc374 NC |
10772 | Perl_croak(aTHX_ |
10773 | "panic: ss_dup inconsistency (%"IVdf")", (IV) type); | |
1d7c1841 GS |
10774 | } |
10775 | } | |
10776 | ||
bd81e77b NC |
10777 | return nss; |
10778 | } | |
10779 | ||
10780 | ||
10781 | /* if sv is a stash, call $class->CLONE_SKIP(), and set the SVphv_CLONEABLE | |
10782 | * flag to the result. This is done for each stash before cloning starts, | |
10783 | * so we know which stashes want their objects cloned */ | |
10784 | ||
10785 | static void | |
10786 | do_mark_cloneable_stash(pTHX_ SV *sv) | |
10787 | { | |
10788 | const HEK * const hvname = HvNAME_HEK((HV*)sv); | |
10789 | if (hvname) { | |
10790 | GV* const cloner = gv_fetchmethod_autoload((HV*)sv, "CLONE_SKIP", 0); | |
10791 | SvFLAGS(sv) |= SVphv_CLONEABLE; /* clone objects by default */ | |
10792 | if (cloner && GvCV(cloner)) { | |
10793 | dSP; | |
10794 | UV status; | |
10795 | ||
10796 | ENTER; | |
10797 | SAVETMPS; | |
10798 | PUSHMARK(SP); | |
10799 | XPUSHs(sv_2mortal(newSVhek(hvname))); | |
10800 | PUTBACK; | |
10801 | call_sv((SV*)GvCV(cloner), G_SCALAR); | |
10802 | SPAGAIN; | |
10803 | status = POPu; | |
10804 | PUTBACK; | |
10805 | FREETMPS; | |
10806 | LEAVE; | |
10807 | if (status) | |
10808 | SvFLAGS(sv) &= ~SVphv_CLONEABLE; | |
10809 | } | |
10810 | } | |
10811 | } | |
10812 | ||
10813 | ||
10814 | ||
10815 | /* | |
10816 | =for apidoc perl_clone | |
10817 | ||
10818 | Create and return a new interpreter by cloning the current one. | |
10819 | ||
10820 | perl_clone takes these flags as parameters: | |
10821 | ||
10822 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, | |
10823 | without it we only clone the data and zero the stacks, | |
10824 | with it we copy the stacks and the new perl interpreter is | |
10825 | ready to run at the exact same point as the previous one. | |
10826 | The pseudo-fork code uses COPY_STACKS while the | |
878090d5 | 10827 | threads->create doesn't. |
bd81e77b NC |
10828 | |
10829 | CLONEf_KEEP_PTR_TABLE | |
10830 | perl_clone keeps a ptr_table with the pointer of the old | |
10831 | variable as a key and the new variable as a value, | |
10832 | this allows it to check if something has been cloned and not | |
10833 | clone it again but rather just use the value and increase the | |
10834 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
10835 | the ptr_table using the function | |
10836 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
10837 | reason to keep it around is if you want to dup some of your own | |
10838 | variable who are outside the graph perl scans, example of this | |
10839 | code is in threads.xs create | |
10840 | ||
10841 | CLONEf_CLONE_HOST | |
10842 | This is a win32 thing, it is ignored on unix, it tells perls | |
10843 | win32host code (which is c++) to clone itself, this is needed on | |
10844 | win32 if you want to run two threads at the same time, | |
10845 | if you just want to do some stuff in a separate perl interpreter | |
10846 | and then throw it away and return to the original one, | |
10847 | you don't need to do anything. | |
10848 | ||
10849 | =cut | |
10850 | */ | |
10851 | ||
10852 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
10853 | EXTERN_C PerlInterpreter * | |
10854 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
10855 | ||
10856 | PerlInterpreter * | |
10857 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
10858 | { | |
10859 | dVAR; | |
10860 | #ifdef PERL_IMPLICIT_SYS | |
10861 | ||
10862 | /* perlhost.h so we need to call into it | |
10863 | to clone the host, CPerlHost should have a c interface, sky */ | |
10864 | ||
10865 | if (flags & CLONEf_CLONE_HOST) { | |
10866 | return perl_clone_host(proto_perl,flags); | |
10867 | } | |
10868 | return perl_clone_using(proto_perl, flags, | |
10869 | proto_perl->IMem, | |
10870 | proto_perl->IMemShared, | |
10871 | proto_perl->IMemParse, | |
10872 | proto_perl->IEnv, | |
10873 | proto_perl->IStdIO, | |
10874 | proto_perl->ILIO, | |
10875 | proto_perl->IDir, | |
10876 | proto_perl->ISock, | |
10877 | proto_perl->IProc); | |
10878 | } | |
10879 | ||
10880 | PerlInterpreter * | |
10881 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
10882 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
10883 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
10884 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
10885 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
10886 | struct IPerlProc* ipP) | |
10887 | { | |
10888 | /* XXX many of the string copies here can be optimized if they're | |
10889 | * constants; they need to be allocated as common memory and just | |
10890 | * their pointers copied. */ | |
10891 | ||
10892 | IV i; | |
10893 | CLONE_PARAMS clone_params; | |
5f66b61c | 10894 | CLONE_PARAMS* const param = &clone_params; |
bd81e77b | 10895 | |
5f66b61c | 10896 | PerlInterpreter * const my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
bd81e77b NC |
10897 | /* for each stash, determine whether its objects should be cloned */ |
10898 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
10899 | PERL_SET_THX(my_perl); | |
10900 | ||
10901 | # ifdef DEBUGGING | |
7e337ee0 | 10902 | PoisonNew(my_perl, 1, PerlInterpreter); |
5f66b61c AL |
10903 | PL_op = NULL; |
10904 | PL_curcop = NULL; | |
bd81e77b NC |
10905 | PL_markstack = 0; |
10906 | PL_scopestack = 0; | |
10907 | PL_savestack = 0; | |
10908 | PL_savestack_ix = 0; | |
10909 | PL_savestack_max = -1; | |
10910 | PL_sig_pending = 0; | |
b8328dae | 10911 | PL_parser = NULL; |
bd81e77b NC |
10912 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
10913 | # else /* !DEBUGGING */ | |
10914 | Zero(my_perl, 1, PerlInterpreter); | |
10915 | # endif /* DEBUGGING */ | |
10916 | ||
10917 | /* host pointers */ | |
10918 | PL_Mem = ipM; | |
10919 | PL_MemShared = ipMS; | |
10920 | PL_MemParse = ipMP; | |
10921 | PL_Env = ipE; | |
10922 | PL_StdIO = ipStd; | |
10923 | PL_LIO = ipLIO; | |
10924 | PL_Dir = ipD; | |
10925 | PL_Sock = ipS; | |
10926 | PL_Proc = ipP; | |
10927 | #else /* !PERL_IMPLICIT_SYS */ | |
10928 | IV i; | |
10929 | CLONE_PARAMS clone_params; | |
10930 | CLONE_PARAMS* param = &clone_params; | |
5f66b61c | 10931 | PerlInterpreter * const my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
bd81e77b NC |
10932 | /* for each stash, determine whether its objects should be cloned */ |
10933 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
10934 | PERL_SET_THX(my_perl); | |
10935 | ||
10936 | # ifdef DEBUGGING | |
7e337ee0 | 10937 | PoisonNew(my_perl, 1, PerlInterpreter); |
5f66b61c AL |
10938 | PL_op = NULL; |
10939 | PL_curcop = NULL; | |
bd81e77b NC |
10940 | PL_markstack = 0; |
10941 | PL_scopestack = 0; | |
10942 | PL_savestack = 0; | |
10943 | PL_savestack_ix = 0; | |
10944 | PL_savestack_max = -1; | |
10945 | PL_sig_pending = 0; | |
b8328dae | 10946 | PL_parser = NULL; |
bd81e77b NC |
10947 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
10948 | # else /* !DEBUGGING */ | |
10949 | Zero(my_perl, 1, PerlInterpreter); | |
10950 | # endif /* DEBUGGING */ | |
10951 | #endif /* PERL_IMPLICIT_SYS */ | |
10952 | param->flags = flags; | |
10953 | param->proto_perl = proto_perl; | |
10954 | ||
7cb608b5 NC |
10955 | INIT_TRACK_MEMPOOL(my_perl->Imemory_debug_header, my_perl); |
10956 | ||
fdda85ca | 10957 | PL_body_arenas = NULL; |
bd81e77b NC |
10958 | Zero(&PL_body_roots, 1, PL_body_roots); |
10959 | ||
10960 | PL_nice_chunk = NULL; | |
10961 | PL_nice_chunk_size = 0; | |
10962 | PL_sv_count = 0; | |
10963 | PL_sv_objcount = 0; | |
a0714e2c SS |
10964 | PL_sv_root = NULL; |
10965 | PL_sv_arenaroot = NULL; | |
bd81e77b NC |
10966 | |
10967 | PL_debug = proto_perl->Idebug; | |
10968 | ||
10969 | PL_hash_seed = proto_perl->Ihash_seed; | |
10970 | PL_rehash_seed = proto_perl->Irehash_seed; | |
10971 | ||
10972 | #ifdef USE_REENTRANT_API | |
10973 | /* XXX: things like -Dm will segfault here in perlio, but doing | |
10974 | * PERL_SET_CONTEXT(proto_perl); | |
10975 | * breaks too many other things | |
10976 | */ | |
10977 | Perl_reentrant_init(aTHX); | |
10978 | #endif | |
10979 | ||
10980 | /* create SV map for pointer relocation */ | |
10981 | PL_ptr_table = ptr_table_new(); | |
10982 | ||
10983 | /* initialize these special pointers as early as possible */ | |
10984 | SvANY(&PL_sv_undef) = NULL; | |
10985 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
10986 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
10987 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
10988 | ||
10989 | SvANY(&PL_sv_no) = new_XPVNV(); | |
10990 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; | |
10991 | SvFLAGS(&PL_sv_no) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK | |
10992 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
bb7a0f54 | 10993 | SvPV_set(&PL_sv_no, savepvn(PL_No, 0)); |
bd81e77b NC |
10994 | SvCUR_set(&PL_sv_no, 0); |
10995 | SvLEN_set(&PL_sv_no, 1); | |
10996 | SvIV_set(&PL_sv_no, 0); | |
10997 | SvNV_set(&PL_sv_no, 0); | |
10998 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); | |
10999 | ||
11000 | SvANY(&PL_sv_yes) = new_XPVNV(); | |
11001 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; | |
11002 | SvFLAGS(&PL_sv_yes) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK | |
11003 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
bb7a0f54 | 11004 | SvPV_set(&PL_sv_yes, savepvn(PL_Yes, 1)); |
bd81e77b NC |
11005 | SvCUR_set(&PL_sv_yes, 1); |
11006 | SvLEN_set(&PL_sv_yes, 2); | |
11007 | SvIV_set(&PL_sv_yes, 1); | |
11008 | SvNV_set(&PL_sv_yes, 1); | |
11009 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); | |
11010 | ||
11011 | /* create (a non-shared!) shared string table */ | |
11012 | PL_strtab = newHV(); | |
11013 | HvSHAREKEYS_off(PL_strtab); | |
11014 | hv_ksplit(PL_strtab, HvTOTALKEYS(proto_perl->Istrtab)); | |
11015 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); | |
11016 | ||
11017 | PL_compiling = proto_perl->Icompiling; | |
11018 | ||
11019 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
11020 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
11021 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
11022 | ||
11023 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
11024 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
11025 | ||
11026 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); | |
72dc9ed5 | 11027 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_compiling.cop_warnings); |
c28fe1ec | 11028 | if (PL_compiling.cop_hints_hash) { |
cbb1fbea | 11029 | HINTS_REFCNT_LOCK; |
c28fe1ec | 11030 | PL_compiling.cop_hints_hash->refcounted_he_refcnt++; |
cbb1fbea NC |
11031 | HINTS_REFCNT_UNLOCK; |
11032 | } | |
907b3e23 | 11033 | PL_curcop = (COP*)any_dup(proto_perl->Icurcop, proto_perl); |
5892a4d4 NC |
11034 | #ifdef PERL_DEBUG_READONLY_OPS |
11035 | PL_slabs = NULL; | |
11036 | PL_slab_count = 0; | |
11037 | #endif | |
bd81e77b NC |
11038 | |
11039 | /* pseudo environmental stuff */ | |
11040 | PL_origargc = proto_perl->Iorigargc; | |
11041 | PL_origargv = proto_perl->Iorigargv; | |
11042 | ||
11043 | param->stashes = newAV(); /* Setup array of objects to call clone on */ | |
11044 | ||
11045 | /* Set tainting stuff before PerlIO_debug can possibly get called */ | |
11046 | PL_tainting = proto_perl->Itainting; | |
11047 | PL_taint_warn = proto_perl->Itaint_warn; | |
11048 | ||
11049 | #ifdef PERLIO_LAYERS | |
11050 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ | |
11051 | PerlIO_clone(aTHX_ proto_perl, param); | |
11052 | #endif | |
11053 | ||
11054 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
11055 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
11056 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
11057 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); | |
11058 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); | |
11059 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
11060 | ||
11061 | /* switches */ | |
11062 | PL_minus_c = proto_perl->Iminus_c; | |
11063 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); | |
11064 | PL_localpatches = proto_perl->Ilocalpatches; | |
11065 | PL_splitstr = proto_perl->Isplitstr; | |
11066 | PL_preprocess = proto_perl->Ipreprocess; | |
11067 | PL_minus_n = proto_perl->Iminus_n; | |
11068 | PL_minus_p = proto_perl->Iminus_p; | |
11069 | PL_minus_l = proto_perl->Iminus_l; | |
11070 | PL_minus_a = proto_perl->Iminus_a; | |
bc9b29db | 11071 | PL_minus_E = proto_perl->Iminus_E; |
bd81e77b NC |
11072 | PL_minus_F = proto_perl->Iminus_F; |
11073 | PL_doswitches = proto_perl->Idoswitches; | |
11074 | PL_dowarn = proto_perl->Idowarn; | |
11075 | PL_doextract = proto_perl->Idoextract; | |
11076 | PL_sawampersand = proto_perl->Isawampersand; | |
11077 | PL_unsafe = proto_perl->Iunsafe; | |
11078 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
11079 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); | |
11080 | PL_perldb = proto_perl->Iperldb; | |
11081 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
11082 | PL_exit_flags = proto_perl->Iexit_flags; | |
11083 | ||
11084 | /* magical thingies */ | |
11085 | /* XXX time(&PL_basetime) when asked for? */ | |
11086 | PL_basetime = proto_perl->Ibasetime; | |
11087 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); | |
11088 | ||
11089 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
bd81e77b NC |
11090 | PL_statusvalue = proto_perl->Istatusvalue; |
11091 | #ifdef VMS | |
11092 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
11093 | #else | |
11094 | PL_statusvalue_posix = proto_perl->Istatusvalue_posix; | |
11095 | #endif | |
11096 | PL_encoding = sv_dup(proto_perl->Iencoding, param); | |
11097 | ||
11098 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ | |
11099 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ | |
11100 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
11101 | ||
84da74a7 | 11102 | |
f9f4320a | 11103 | /* RE engine related */ |
84da74a7 YO |
11104 | Zero(&PL_reg_state, 1, struct re_save_state); |
11105 | PL_reginterp_cnt = 0; | |
11106 | PL_regmatch_slab = NULL; | |
11107 | ||
bd81e77b NC |
11108 | /* Clone the regex array */ |
11109 | PL_regex_padav = newAV(); | |
11110 | { | |
11111 | const I32 len = av_len((AV*)proto_perl->Iregex_padav); | |
7a5b473e | 11112 | SV* const * const regexen = AvARRAY((AV*)proto_perl->Iregex_padav); |
bd81e77b | 11113 | IV i; |
7f466ec7 | 11114 | av_push(PL_regex_padav, sv_dup_inc_NN(regexen[0],param)); |
bd81e77b | 11115 | for(i = 1; i <= len; i++) { |
7a5b473e AL |
11116 | const SV * const regex = regexen[i]; |
11117 | SV * const sv = | |
11118 | SvREPADTMP(regex) | |
11119 | ? sv_dup_inc(regex, param) | |
11120 | : SvREFCNT_inc( | |
f8149455 | 11121 | newSViv(PTR2IV(CALLREGDUPE( |
7a5b473e AL |
11122 | INT2PTR(REGEXP *, SvIVX(regex)), param)))) |
11123 | ; | |
60790534 DM |
11124 | if (SvFLAGS(regex) & SVf_BREAK) |
11125 | SvFLAGS(sv) |= SVf_BREAK; /* unrefcnted PL_curpm */ | |
7a5b473e | 11126 | av_push(PL_regex_padav, sv); |
bd81e77b NC |
11127 | } |
11128 | } | |
11129 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
11130 | ||
11131 | /* shortcuts to various I/O objects */ | |
11132 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); | |
11133 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11134 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11135 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11136 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11137 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 | 11138 | |
bd81e77b NC |
11139 | /* shortcuts to regexp stuff */ |
11140 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); | |
9660f481 | 11141 | |
bd81e77b NC |
11142 | /* shortcuts to misc objects */ |
11143 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); | |
9660f481 | 11144 | |
bd81e77b NC |
11145 | /* shortcuts to debugging objects */ |
11146 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); | |
11147 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11148 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11149 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11150 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11151 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
bd81e77b | 11152 | PL_dbargs = av_dup(proto_perl->Idbargs, param); |
9660f481 | 11153 | |
bd81e77b | 11154 | /* symbol tables */ |
907b3e23 DM |
11155 | PL_defstash = hv_dup_inc(proto_perl->Idefstash, param); |
11156 | PL_curstash = hv_dup(proto_perl->Icurstash, param); | |
bd81e77b NC |
11157 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
11158 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11159 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11160 | ||
11161 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
11162 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); | |
11163 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); | |
3c10abe3 AG |
11164 | PL_unitcheckav = av_dup_inc(proto_perl->Iunitcheckav, param); |
11165 | PL_unitcheckav_save = av_dup_inc(proto_perl->Iunitcheckav_save, param); | |
bd81e77b NC |
11166 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11167 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11168 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
11169 | ||
11170 | PL_sub_generation = proto_perl->Isub_generation; | |
dd69841b | 11171 | PL_isarev = hv_dup_inc(proto_perl->Iisarev, param); |
bd81e77b NC |
11172 | |
11173 | /* funky return mechanisms */ | |
11174 | PL_forkprocess = proto_perl->Iforkprocess; | |
11175 | ||
11176 | /* subprocess state */ | |
11177 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); | |
11178 | ||
11179 | /* internal state */ | |
11180 | PL_maxo = proto_perl->Imaxo; | |
11181 | if (proto_perl->Iop_mask) | |
11182 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11183 | else | |
bd61b366 | 11184 | PL_op_mask = NULL; |
bd81e77b NC |
11185 | /* PL_asserting = proto_perl->Iasserting; */ |
11186 | ||
11187 | /* current interpreter roots */ | |
11188 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); | |
d3c72c2a | 11189 | OP_REFCNT_LOCK; |
bd81e77b | 11190 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
d3c72c2a | 11191 | OP_REFCNT_UNLOCK; |
bd81e77b NC |
11192 | PL_main_start = proto_perl->Imain_start; |
11193 | PL_eval_root = proto_perl->Ieval_root; | |
11194 | PL_eval_start = proto_perl->Ieval_start; | |
11195 | ||
11196 | /* runtime control stuff */ | |
11197 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
bd81e77b NC |
11198 | |
11199 | PL_filemode = proto_perl->Ifilemode; | |
11200 | PL_lastfd = proto_perl->Ilastfd; | |
11201 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11202 | PL_Argv = NULL; | |
bd61b366 | 11203 | PL_Cmd = NULL; |
bd81e77b | 11204 | PL_gensym = proto_perl->Igensym; |
bd81e77b NC |
11205 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
11206 | PL_laststatval = proto_perl->Ilaststatval; | |
11207 | PL_laststype = proto_perl->Ilaststype; | |
a0714e2c | 11208 | PL_mess_sv = NULL; |
bd81e77b NC |
11209 | |
11210 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); | |
11211 | ||
11212 | /* interpreter atexit processing */ | |
11213 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11214 | if (PL_exitlistlen) { | |
11215 | Newx(PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11216 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
9660f481 | 11217 | } |
bd81e77b NC |
11218 | else |
11219 | PL_exitlist = (PerlExitListEntry*)NULL; | |
f16dd614 DM |
11220 | |
11221 | PL_my_cxt_size = proto_perl->Imy_cxt_size; | |
4c901e72 | 11222 | if (PL_my_cxt_size) { |
f16dd614 DM |
11223 | Newx(PL_my_cxt_list, PL_my_cxt_size, void *); |
11224 | Copy(proto_perl->Imy_cxt_list, PL_my_cxt_list, PL_my_cxt_size, void *); | |
53d44271 | 11225 | #ifdef PERL_GLOBAL_STRUCT_PRIVATE |
bae1192d | 11226 | Newx(PL_my_cxt_keys, PL_my_cxt_size, const char *); |
53d44271 JH |
11227 | Copy(proto_perl->Imy_cxt_keys, PL_my_cxt_keys, PL_my_cxt_size, char *); |
11228 | #endif | |
f16dd614 | 11229 | } |
53d44271 | 11230 | else { |
f16dd614 | 11231 | PL_my_cxt_list = (void**)NULL; |
53d44271 | 11232 | #ifdef PERL_GLOBAL_STRUCT_PRIVATE |
bae1192d | 11233 | PL_my_cxt_keys = (const char**)NULL; |
53d44271 JH |
11234 | #endif |
11235 | } | |
bd81e77b NC |
11236 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
11237 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); | |
11238 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
11239 | ||
11240 | PL_profiledata = NULL; | |
9660f481 | 11241 | |
bd81e77b | 11242 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
9660f481 | 11243 | |
bd81e77b | 11244 | PAD_CLONE_VARS(proto_perl, param); |
9660f481 | 11245 | |
bd81e77b NC |
11246 | #ifdef HAVE_INTERP_INTERN |
11247 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11248 | #endif | |
645c22ef | 11249 | |
bd81e77b NC |
11250 | /* more statics moved here */ |
11251 | PL_generation = proto_perl->Igeneration; | |
11252 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); | |
645c22ef | 11253 | |
bd81e77b NC |
11254 | PL_in_clean_objs = proto_perl->Iin_clean_objs; |
11255 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
6a78b4db | 11256 | |
bd81e77b NC |
11257 | PL_uid = proto_perl->Iuid; |
11258 | PL_euid = proto_perl->Ieuid; | |
11259 | PL_gid = proto_perl->Igid; | |
11260 | PL_egid = proto_perl->Iegid; | |
11261 | PL_nomemok = proto_perl->Inomemok; | |
11262 | PL_an = proto_perl->Ian; | |
11263 | PL_evalseq = proto_perl->Ievalseq; | |
11264 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11265 | PL_origalen = proto_perl->Iorigalen; | |
11266 | #ifdef PERL_USES_PL_PIDSTATUS | |
11267 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
11268 | #endif | |
11269 | PL_osname = SAVEPV(proto_perl->Iosname); | |
11270 | PL_sighandlerp = proto_perl->Isighandlerp; | |
6a78b4db | 11271 | |
bd81e77b | 11272 | PL_runops = proto_perl->Irunops; |
6a78b4db | 11273 | |
bd81e77b NC |
11274 | #ifdef CSH |
11275 | PL_cshlen = proto_perl->Icshlen; | |
11276 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ | |
11277 | #endif | |
645c22ef | 11278 | |
199e78b7 DM |
11279 | PL_parser = parser_dup(proto_perl->Iparser, param); |
11280 | ||
bd81e77b NC |
11281 | PL_subline = proto_perl->Isubline; |
11282 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); | |
c43294b8 | 11283 | |
bd81e77b NC |
11284 | #ifdef FCRYPT |
11285 | PL_cryptseen = proto_perl->Icryptseen; | |
11286 | #endif | |
1d7c1841 | 11287 | |
bd81e77b | 11288 | PL_hints = proto_perl->Ihints; |
1d7c1841 | 11289 | |
bd81e77b | 11290 | PL_amagic_generation = proto_perl->Iamagic_generation; |
d2d73c3e | 11291 | |
bd81e77b NC |
11292 | #ifdef USE_LOCALE_COLLATE |
11293 | PL_collation_ix = proto_perl->Icollation_ix; | |
11294 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
11295 | PL_collation_standard = proto_perl->Icollation_standard; | |
11296 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
11297 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
11298 | #endif /* USE_LOCALE_COLLATE */ | |
1d7c1841 | 11299 | |
bd81e77b NC |
11300 | #ifdef USE_LOCALE_NUMERIC |
11301 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
11302 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
11303 | PL_numeric_local = proto_perl->Inumeric_local; | |
11304 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); | |
11305 | #endif /* !USE_LOCALE_NUMERIC */ | |
1d7c1841 | 11306 | |
bd81e77b NC |
11307 | /* utf8 character classes */ |
11308 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); | |
11309 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
11310 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
11311 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
11312 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
11313 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
11314 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
11315 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
11316 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
11317 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
11318 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
11319 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
11320 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
11321 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
11322 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
11323 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
11324 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
11325 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); | |
11326 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); | |
11327 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 11328 | |
bd81e77b NC |
11329 | /* Did the locale setup indicate UTF-8? */ |
11330 | PL_utf8locale = proto_perl->Iutf8locale; | |
11331 | /* Unicode features (see perlrun/-C) */ | |
11332 | PL_unicode = proto_perl->Iunicode; | |
1d7c1841 | 11333 | |
bd81e77b NC |
11334 | /* Pre-5.8 signals control */ |
11335 | PL_signals = proto_perl->Isignals; | |
1d7c1841 | 11336 | |
bd81e77b NC |
11337 | /* times() ticks per second */ |
11338 | PL_clocktick = proto_perl->Iclocktick; | |
1d7c1841 | 11339 | |
bd81e77b NC |
11340 | /* Recursion stopper for PerlIO_find_layer */ |
11341 | PL_in_load_module = proto_perl->Iin_load_module; | |
8df990a8 | 11342 | |
bd81e77b NC |
11343 | /* sort() routine */ |
11344 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
e5dd39fc | 11345 | |
bd81e77b NC |
11346 | /* Not really needed/useful since the reenrant_retint is "volatile", |
11347 | * but do it for consistency's sake. */ | |
11348 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
1d7c1841 | 11349 | |
bd81e77b NC |
11350 | /* Hooks to shared SVs and locks. */ |
11351 | PL_sharehook = proto_perl->Isharehook; | |
11352 | PL_lockhook = proto_perl->Ilockhook; | |
11353 | PL_unlockhook = proto_perl->Iunlockhook; | |
11354 | PL_threadhook = proto_perl->Ithreadhook; | |
1d7c1841 | 11355 | |
bd81e77b NC |
11356 | #ifdef THREADS_HAVE_PIDS |
11357 | PL_ppid = proto_perl->Ippid; | |
11358 | #endif | |
1d7c1841 | 11359 | |
bd81e77b | 11360 | /* swatch cache */ |
5c284bb0 | 11361 | PL_last_swash_hv = NULL; /* reinits on demand */ |
bd81e77b NC |
11362 | PL_last_swash_klen = 0; |
11363 | PL_last_swash_key[0]= '\0'; | |
11364 | PL_last_swash_tmps = (U8*)NULL; | |
11365 | PL_last_swash_slen = 0; | |
1d7c1841 | 11366 | |
bd81e77b NC |
11367 | PL_glob_index = proto_perl->Iglob_index; |
11368 | PL_srand_called = proto_perl->Isrand_called; | |
bd61b366 | 11369 | PL_bitcount = NULL; /* reinits on demand */ |
05ec9bb3 | 11370 | |
bd81e77b NC |
11371 | if (proto_perl->Ipsig_pend) { |
11372 | Newxz(PL_psig_pend, SIG_SIZE, int); | |
11373 | } | |
11374 | else { | |
11375 | PL_psig_pend = (int*)NULL; | |
11376 | } | |
05ec9bb3 | 11377 | |
bd81e77b NC |
11378 | if (proto_perl->Ipsig_ptr) { |
11379 | Newxz(PL_psig_ptr, SIG_SIZE, SV*); | |
11380 | Newxz(PL_psig_name, SIG_SIZE, SV*); | |
11381 | for (i = 1; i < SIG_SIZE; i++) { | |
11382 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); | |
11383 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
11384 | } | |
11385 | } | |
11386 | else { | |
11387 | PL_psig_ptr = (SV**)NULL; | |
11388 | PL_psig_name = (SV**)NULL; | |
11389 | } | |
05ec9bb3 | 11390 | |
907b3e23 | 11391 | /* intrpvar.h stuff */ |
1d7c1841 | 11392 | |
bd81e77b NC |
11393 | if (flags & CLONEf_COPY_STACKS) { |
11394 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ | |
907b3e23 DM |
11395 | PL_tmps_ix = proto_perl->Itmps_ix; |
11396 | PL_tmps_max = proto_perl->Itmps_max; | |
11397 | PL_tmps_floor = proto_perl->Itmps_floor; | |
bd81e77b NC |
11398 | Newxz(PL_tmps_stack, PL_tmps_max, SV*); |
11399 | i = 0; | |
11400 | while (i <= PL_tmps_ix) { | |
907b3e23 | 11401 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Itmps_stack[i], param); |
bd81e77b NC |
11402 | ++i; |
11403 | } | |
d2d73c3e | 11404 | |
bd81e77b | 11405 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ |
907b3e23 | 11406 | i = proto_perl->Imarkstack_max - proto_perl->Imarkstack; |
bd81e77b | 11407 | Newxz(PL_markstack, i, I32); |
907b3e23 DM |
11408 | PL_markstack_max = PL_markstack + (proto_perl->Imarkstack_max |
11409 | - proto_perl->Imarkstack); | |
11410 | PL_markstack_ptr = PL_markstack + (proto_perl->Imarkstack_ptr | |
11411 | - proto_perl->Imarkstack); | |
11412 | Copy(proto_perl->Imarkstack, PL_markstack, | |
bd81e77b | 11413 | PL_markstack_ptr - PL_markstack + 1, I32); |
d2d73c3e | 11414 | |
bd81e77b NC |
11415 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] |
11416 | * NOTE: unlike the others! */ | |
907b3e23 DM |
11417 | PL_scopestack_ix = proto_perl->Iscopestack_ix; |
11418 | PL_scopestack_max = proto_perl->Iscopestack_max; | |
bd81e77b | 11419 | Newxz(PL_scopestack, PL_scopestack_max, I32); |
907b3e23 | 11420 | Copy(proto_perl->Iscopestack, PL_scopestack, PL_scopestack_ix, I32); |
d419787a | 11421 | |
bd81e77b | 11422 | /* NOTE: si_dup() looks at PL_markstack */ |
907b3e23 | 11423 | PL_curstackinfo = si_dup(proto_perl->Icurstackinfo, param); |
d2d73c3e | 11424 | |
bd81e77b | 11425 | /* PL_curstack = PL_curstackinfo->si_stack; */ |
907b3e23 DM |
11426 | PL_curstack = av_dup(proto_perl->Icurstack, param); |
11427 | PL_mainstack = av_dup(proto_perl->Imainstack, param); | |
1d7c1841 | 11428 | |
bd81e77b NC |
11429 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ |
11430 | PL_stack_base = AvARRAY(PL_curstack); | |
907b3e23 DM |
11431 | PL_stack_sp = PL_stack_base + (proto_perl->Istack_sp |
11432 | - proto_perl->Istack_base); | |
bd81e77b | 11433 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
1d7c1841 | 11434 | |
bd81e77b NC |
11435 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] |
11436 | * NOTE: unlike the others! */ | |
907b3e23 DM |
11437 | PL_savestack_ix = proto_perl->Isavestack_ix; |
11438 | PL_savestack_max = proto_perl->Isavestack_max; | |
bd81e77b NC |
11439 | /*Newxz(PL_savestack, PL_savestack_max, ANY);*/ |
11440 | PL_savestack = ss_dup(proto_perl, param); | |
11441 | } | |
11442 | else { | |
11443 | init_stacks(); | |
11444 | ENTER; /* perl_destruct() wants to LEAVE; */ | |
34394ecd DM |
11445 | |
11446 | /* although we're not duplicating the tmps stack, we should still | |
11447 | * add entries for any SVs on the tmps stack that got cloned by a | |
11448 | * non-refcount means (eg a temp in @_); otherwise they will be | |
11449 | * orphaned | |
11450 | */ | |
907b3e23 | 11451 | for (i = 0; i<= proto_perl->Itmps_ix; i++) { |
6136c704 | 11452 | SV * const nsv = (SV*)ptr_table_fetch(PL_ptr_table, |
907b3e23 | 11453 | proto_perl->Itmps_stack[i]); |
34394ecd DM |
11454 | if (nsv && !SvREFCNT(nsv)) { |
11455 | EXTEND_MORTAL(1); | |
b37c2d43 | 11456 | PL_tmps_stack[++PL_tmps_ix] = SvREFCNT_inc_simple(nsv); |
34394ecd DM |
11457 | } |
11458 | } | |
bd81e77b | 11459 | } |
1d7c1841 | 11460 | |
907b3e23 | 11461 | PL_start_env = proto_perl->Istart_env; /* XXXXXX */ |
bd81e77b | 11462 | PL_top_env = &PL_start_env; |
1d7c1841 | 11463 | |
907b3e23 | 11464 | PL_op = proto_perl->Iop; |
4a4c6fe3 | 11465 | |
a0714e2c | 11466 | PL_Sv = NULL; |
bd81e77b | 11467 | PL_Xpv = (XPV*)NULL; |
907b3e23 | 11468 | PL_na = proto_perl->Ina; |
1fcf4c12 | 11469 | |
907b3e23 DM |
11470 | PL_statbuf = proto_perl->Istatbuf; |
11471 | PL_statcache = proto_perl->Istatcache; | |
11472 | PL_statgv = gv_dup(proto_perl->Istatgv, param); | |
11473 | PL_statname = sv_dup_inc(proto_perl->Istatname, param); | |
bd81e77b | 11474 | #ifdef HAS_TIMES |
907b3e23 | 11475 | PL_timesbuf = proto_perl->Itimesbuf; |
bd81e77b | 11476 | #endif |
1d7c1841 | 11477 | |
907b3e23 DM |
11478 | PL_tainted = proto_perl->Itainted; |
11479 | PL_curpm = proto_perl->Icurpm; /* XXX No PMOP ref count */ | |
11480 | PL_rs = sv_dup_inc(proto_perl->Irs, param); | |
11481 | PL_last_in_gv = gv_dup(proto_perl->Ilast_in_gv, param); | |
11482 | PL_ofs_sv = sv_dup_inc(proto_perl->Iofs_sv, param); | |
11483 | PL_defoutgv = gv_dup_inc(proto_perl->Idefoutgv, param); | |
11484 | PL_chopset = proto_perl->Ichopset; /* XXX never deallocated */ | |
11485 | PL_toptarget = sv_dup_inc(proto_perl->Itoptarget, param); | |
11486 | PL_bodytarget = sv_dup_inc(proto_perl->Ibodytarget, param); | |
11487 | PL_formtarget = sv_dup(proto_perl->Iformtarget, param); | |
11488 | ||
11489 | PL_restartop = proto_perl->Irestartop; | |
11490 | PL_in_eval = proto_perl->Iin_eval; | |
11491 | PL_delaymagic = proto_perl->Idelaymagic; | |
11492 | PL_dirty = proto_perl->Idirty; | |
11493 | PL_localizing = proto_perl->Ilocalizing; | |
11494 | ||
11495 | PL_errors = sv_dup_inc(proto_perl->Ierrors, param); | |
4608196e | 11496 | PL_hv_fetch_ent_mh = NULL; |
907b3e23 | 11497 | PL_modcount = proto_perl->Imodcount; |
5f66b61c | 11498 | PL_lastgotoprobe = NULL; |
907b3e23 | 11499 | PL_dumpindent = proto_perl->Idumpindent; |
1d7c1841 | 11500 | |
907b3e23 DM |
11501 | PL_sortcop = (OP*)any_dup(proto_perl->Isortcop, proto_perl); |
11502 | PL_sortstash = hv_dup(proto_perl->Isortstash, param); | |
11503 | PL_firstgv = gv_dup(proto_perl->Ifirstgv, param); | |
11504 | PL_secondgv = gv_dup(proto_perl->Isecondgv, param); | |
bd61b366 | 11505 | PL_efloatbuf = NULL; /* reinits on demand */ |
bd81e77b | 11506 | PL_efloatsize = 0; /* reinits on demand */ |
d2d73c3e | 11507 | |
bd81e77b | 11508 | /* regex stuff */ |
1d7c1841 | 11509 | |
bd81e77b NC |
11510 | PL_screamfirst = NULL; |
11511 | PL_screamnext = NULL; | |
11512 | PL_maxscream = -1; /* reinits on demand */ | |
a0714e2c | 11513 | PL_lastscream = NULL; |
1d7c1841 | 11514 | |
1d7c1841 | 11515 | |
907b3e23 | 11516 | PL_regdummy = proto_perl->Iregdummy; |
bd81e77b NC |
11517 | PL_colorset = 0; /* reinits PL_colors[] */ |
11518 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 | 11519 | |
84da74a7 | 11520 | |
1d7c1841 | 11521 | |
bd81e77b | 11522 | /* Pluggable optimizer */ |
907b3e23 | 11523 | PL_peepp = proto_perl->Ipeepp; |
1d7c1841 | 11524 | |
bd81e77b | 11525 | PL_stashcache = newHV(); |
1d7c1841 | 11526 | |
b7185faf | 11527 | PL_watchaddr = (char **) ptr_table_fetch(PL_ptr_table, |
907b3e23 | 11528 | proto_perl->Iwatchaddr); |
b7185faf DM |
11529 | PL_watchok = PL_watchaddr ? * PL_watchaddr : NULL; |
11530 | if (PL_debug && PL_watchaddr) { | |
11531 | PerlIO_printf(Perl_debug_log, | |
11532 | "WATCHING: %"UVxf" cloned as %"UVxf" with value %"UVxf"\n", | |
907b3e23 | 11533 | PTR2UV(proto_perl->Iwatchaddr), PTR2UV(PL_watchaddr), |
b7185faf DM |
11534 | PTR2UV(PL_watchok)); |
11535 | } | |
11536 | ||
bd81e77b NC |
11537 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
11538 | ptr_table_free(PL_ptr_table); | |
11539 | PL_ptr_table = NULL; | |
11540 | } | |
1d7c1841 | 11541 | |
bd81e77b NC |
11542 | /* Call the ->CLONE method, if it exists, for each of the stashes |
11543 | identified by sv_dup() above. | |
11544 | */ | |
11545 | while(av_len(param->stashes) != -1) { | |
11546 | HV* const stash = (HV*) av_shift(param->stashes); | |
11547 | GV* const cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); | |
11548 | if (cloner && GvCV(cloner)) { | |
11549 | dSP; | |
11550 | ENTER; | |
11551 | SAVETMPS; | |
11552 | PUSHMARK(SP); | |
11553 | XPUSHs(sv_2mortal(newSVhek(HvNAME_HEK(stash)))); | |
11554 | PUTBACK; | |
11555 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
11556 | FREETMPS; | |
11557 | LEAVE; | |
11558 | } | |
1d7c1841 | 11559 | } |
1d7c1841 | 11560 | |
bd81e77b | 11561 | SvREFCNT_dec(param->stashes); |
1d7c1841 | 11562 | |
bd81e77b NC |
11563 | /* orphaned? eg threads->new inside BEGIN or use */ |
11564 | if (PL_compcv && ! SvREFCNT(PL_compcv)) { | |
b37c2d43 | 11565 | SvREFCNT_inc_simple_void(PL_compcv); |
bd81e77b NC |
11566 | SAVEFREESV(PL_compcv); |
11567 | } | |
dd2155a4 | 11568 | |
bd81e77b NC |
11569 | return my_perl; |
11570 | } | |
1d7c1841 | 11571 | |
bd81e77b | 11572 | #endif /* USE_ITHREADS */ |
1d7c1841 | 11573 | |
bd81e77b NC |
11574 | /* |
11575 | =head1 Unicode Support | |
1d7c1841 | 11576 | |
bd81e77b | 11577 | =for apidoc sv_recode_to_utf8 |
1d7c1841 | 11578 | |
bd81e77b NC |
11579 | The encoding is assumed to be an Encode object, on entry the PV |
11580 | of the sv is assumed to be octets in that encoding, and the sv | |
11581 | will be converted into Unicode (and UTF-8). | |
1d7c1841 | 11582 | |
bd81e77b NC |
11583 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
11584 | is not a reference, nothing is done to the sv. If the encoding is not | |
11585 | an C<Encode::XS> Encoding object, bad things will happen. | |
11586 | (See F<lib/encoding.pm> and L<Encode>). | |
1d7c1841 | 11587 | |
bd81e77b | 11588 | The PV of the sv is returned. |
1d7c1841 | 11589 | |
bd81e77b | 11590 | =cut */ |
1d7c1841 | 11591 | |
bd81e77b NC |
11592 | char * |
11593 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
11594 | { | |
11595 | dVAR; | |
11596 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { | |
11597 | SV *uni; | |
11598 | STRLEN len; | |
11599 | const char *s; | |
11600 | dSP; | |
11601 | ENTER; | |
11602 | SAVETMPS; | |
11603 | save_re_context(); | |
11604 | PUSHMARK(sp); | |
11605 | EXTEND(SP, 3); | |
11606 | XPUSHs(encoding); | |
11607 | XPUSHs(sv); | |
11608 | /* | |
11609 | NI-S 2002/07/09 | |
11610 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
11611 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means | |
11612 | remove converted chars from source. | |
1d7c1841 | 11613 | |
bd81e77b | 11614 | Both will default the value - let them. |
1d7c1841 | 11615 | |
bd81e77b NC |
11616 | XPUSHs(&PL_sv_yes); |
11617 | */ | |
11618 | PUTBACK; | |
11619 | call_method("decode", G_SCALAR); | |
11620 | SPAGAIN; | |
11621 | uni = POPs; | |
11622 | PUTBACK; | |
11623 | s = SvPV_const(uni, len); | |
11624 | if (s != SvPVX_const(sv)) { | |
11625 | SvGROW(sv, len + 1); | |
11626 | Move(s, SvPVX(sv), len + 1, char); | |
11627 | SvCUR_set(sv, len); | |
11628 | } | |
11629 | FREETMPS; | |
11630 | LEAVE; | |
11631 | SvUTF8_on(sv); | |
11632 | return SvPVX(sv); | |
389edf32 | 11633 | } |
bd81e77b NC |
11634 | return SvPOKp(sv) ? SvPVX(sv) : NULL; |
11635 | } | |
1d7c1841 | 11636 | |
bd81e77b NC |
11637 | /* |
11638 | =for apidoc sv_cat_decode | |
1d7c1841 | 11639 | |
bd81e77b NC |
11640 | The encoding is assumed to be an Encode object, the PV of the ssv is |
11641 | assumed to be octets in that encoding and decoding the input starts | |
11642 | from the position which (PV + *offset) pointed to. The dsv will be | |
11643 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
11644 | when the string tstr appears in decoding output or the input ends on | |
11645 | the PV of the ssv. The value which the offset points will be modified | |
11646 | to the last input position on the ssv. | |
1d7c1841 | 11647 | |
bd81e77b | 11648 | Returns TRUE if the terminator was found, else returns FALSE. |
1d7c1841 | 11649 | |
bd81e77b NC |
11650 | =cut */ |
11651 | ||
11652 | bool | |
11653 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
11654 | SV *ssv, int *offset, char *tstr, int tlen) | |
11655 | { | |
11656 | dVAR; | |
11657 | bool ret = FALSE; | |
11658 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { | |
11659 | SV *offsv; | |
11660 | dSP; | |
11661 | ENTER; | |
11662 | SAVETMPS; | |
11663 | save_re_context(); | |
11664 | PUSHMARK(sp); | |
11665 | EXTEND(SP, 6); | |
11666 | XPUSHs(encoding); | |
11667 | XPUSHs(dsv); | |
11668 | XPUSHs(ssv); | |
11669 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
11670 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
11671 | PUTBACK; | |
11672 | call_method("cat_decode", G_SCALAR); | |
11673 | SPAGAIN; | |
11674 | ret = SvTRUE(TOPs); | |
11675 | *offset = SvIV(offsv); | |
11676 | PUTBACK; | |
11677 | FREETMPS; | |
11678 | LEAVE; | |
389edf32 | 11679 | } |
bd81e77b NC |
11680 | else |
11681 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
11682 | return ret; | |
1d7c1841 | 11683 | |
bd81e77b | 11684 | } |
1d7c1841 | 11685 | |
bd81e77b NC |
11686 | /* --------------------------------------------------------------------- |
11687 | * | |
11688 | * support functions for report_uninit() | |
11689 | */ | |
1d7c1841 | 11690 | |
bd81e77b NC |
11691 | /* the maxiumum size of array or hash where we will scan looking |
11692 | * for the undefined element that triggered the warning */ | |
1d7c1841 | 11693 | |
bd81e77b | 11694 | #define FUV_MAX_SEARCH_SIZE 1000 |
1d7c1841 | 11695 | |
bd81e77b NC |
11696 | /* Look for an entry in the hash whose value has the same SV as val; |
11697 | * If so, return a mortal copy of the key. */ | |
1d7c1841 | 11698 | |
bd81e77b NC |
11699 | STATIC SV* |
11700 | S_find_hash_subscript(pTHX_ HV *hv, SV* val) | |
11701 | { | |
11702 | dVAR; | |
11703 | register HE **array; | |
11704 | I32 i; | |
6c3182a5 | 11705 | |
bd81e77b NC |
11706 | if (!hv || SvMAGICAL(hv) || !HvARRAY(hv) || |
11707 | (HvTOTALKEYS(hv) > FUV_MAX_SEARCH_SIZE)) | |
a0714e2c | 11708 | return NULL; |
6c3182a5 | 11709 | |
bd81e77b | 11710 | array = HvARRAY(hv); |
6c3182a5 | 11711 | |
bd81e77b NC |
11712 | for (i=HvMAX(hv); i>0; i--) { |
11713 | register HE *entry; | |
11714 | for (entry = array[i]; entry; entry = HeNEXT(entry)) { | |
11715 | if (HeVAL(entry) != val) | |
11716 | continue; | |
11717 | if ( HeVAL(entry) == &PL_sv_undef || | |
11718 | HeVAL(entry) == &PL_sv_placeholder) | |
11719 | continue; | |
11720 | if (!HeKEY(entry)) | |
a0714e2c | 11721 | return NULL; |
bd81e77b NC |
11722 | if (HeKLEN(entry) == HEf_SVKEY) |
11723 | return sv_mortalcopy(HeKEY_sv(entry)); | |
11724 | return sv_2mortal(newSVpvn(HeKEY(entry), HeKLEN(entry))); | |
11725 | } | |
11726 | } | |
a0714e2c | 11727 | return NULL; |
bd81e77b | 11728 | } |
6c3182a5 | 11729 | |
bd81e77b NC |
11730 | /* Look for an entry in the array whose value has the same SV as val; |
11731 | * If so, return the index, otherwise return -1. */ | |
6c3182a5 | 11732 | |
bd81e77b NC |
11733 | STATIC I32 |
11734 | S_find_array_subscript(pTHX_ AV *av, SV* val) | |
11735 | { | |
97aff369 | 11736 | dVAR; |
bd81e77b NC |
11737 | if (!av || SvMAGICAL(av) || !AvARRAY(av) || |
11738 | (AvFILLp(av) > FUV_MAX_SEARCH_SIZE)) | |
11739 | return -1; | |
57c6e6d2 | 11740 | |
4a021917 AL |
11741 | if (val != &PL_sv_undef) { |
11742 | SV ** const svp = AvARRAY(av); | |
11743 | I32 i; | |
11744 | ||
11745 | for (i=AvFILLp(av); i>=0; i--) | |
11746 | if (svp[i] == val) | |
11747 | return i; | |
bd81e77b NC |
11748 | } |
11749 | return -1; | |
11750 | } | |
15a5279a | 11751 | |
bd81e77b NC |
11752 | /* S_varname(): return the name of a variable, optionally with a subscript. |
11753 | * If gv is non-zero, use the name of that global, along with gvtype (one | |
11754 | * of "$", "@", "%"); otherwise use the name of the lexical at pad offset | |
11755 | * targ. Depending on the value of the subscript_type flag, return: | |
11756 | */ | |
bce260cd | 11757 | |
bd81e77b NC |
11758 | #define FUV_SUBSCRIPT_NONE 1 /* "@foo" */ |
11759 | #define FUV_SUBSCRIPT_ARRAY 2 /* "$foo[aindex]" */ | |
11760 | #define FUV_SUBSCRIPT_HASH 3 /* "$foo{keyname}" */ | |
11761 | #define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */ | |
bce260cd | 11762 | |
bd81e77b NC |
11763 | STATIC SV* |
11764 | S_varname(pTHX_ GV *gv, const char gvtype, PADOFFSET targ, | |
11765 | SV* keyname, I32 aindex, int subscript_type) | |
11766 | { | |
1d7c1841 | 11767 | |
bd81e77b NC |
11768 | SV * const name = sv_newmortal(); |
11769 | if (gv) { | |
11770 | char buffer[2]; | |
11771 | buffer[0] = gvtype; | |
11772 | buffer[1] = 0; | |
1d7c1841 | 11773 | |
bd81e77b | 11774 | /* as gv_fullname4(), but add literal '^' for $^FOO names */ |
66fe0623 | 11775 | |
bd81e77b | 11776 | gv_fullname4(name, gv, buffer, 0); |
1d7c1841 | 11777 | |
bd81e77b NC |
11778 | if ((unsigned int)SvPVX(name)[1] <= 26) { |
11779 | buffer[0] = '^'; | |
11780 | buffer[1] = SvPVX(name)[1] + 'A' - 1; | |
1d7c1841 | 11781 | |
bd81e77b NC |
11782 | /* Swap the 1 unprintable control character for the 2 byte pretty |
11783 | version - ie substr($name, 1, 1) = $buffer; */ | |
11784 | sv_insert(name, 1, 1, buffer, 2); | |
1d7c1841 | 11785 | } |
bd81e77b NC |
11786 | } |
11787 | else { | |
289b91d9 | 11788 | CV * const cv = find_runcv(NULL); |
bd81e77b NC |
11789 | SV *sv; |
11790 | AV *av; | |
1d7c1841 | 11791 | |
bd81e77b | 11792 | if (!cv || !CvPADLIST(cv)) |
a0714e2c | 11793 | return NULL; |
bd81e77b NC |
11794 | av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE)); |
11795 | sv = *av_fetch(av, targ, FALSE); | |
f8503592 | 11796 | sv_setpvn(name, SvPV_nolen_const(sv), SvCUR(sv)); |
bd81e77b | 11797 | } |
1d7c1841 | 11798 | |
bd81e77b | 11799 | if (subscript_type == FUV_SUBSCRIPT_HASH) { |
561b68a9 | 11800 | SV * const sv = newSV(0); |
bd81e77b NC |
11801 | *SvPVX(name) = '$'; |
11802 | Perl_sv_catpvf(aTHX_ name, "{%s}", | |
11803 | pv_display(sv,SvPVX_const(keyname), SvCUR(keyname), 0, 32)); | |
11804 | SvREFCNT_dec(sv); | |
11805 | } | |
11806 | else if (subscript_type == FUV_SUBSCRIPT_ARRAY) { | |
11807 | *SvPVX(name) = '$'; | |
11808 | Perl_sv_catpvf(aTHX_ name, "[%"IVdf"]", (IV)aindex); | |
11809 | } | |
11810 | else if (subscript_type == FUV_SUBSCRIPT_WITHIN) | |
89529cee | 11811 | Perl_sv_insert(aTHX_ name, 0, 0, STR_WITH_LEN("within ")); |
1d7c1841 | 11812 | |
bd81e77b NC |
11813 | return name; |
11814 | } | |
1d7c1841 | 11815 | |
1d7c1841 | 11816 | |
bd81e77b NC |
11817 | /* |
11818 | =for apidoc find_uninit_var | |
1d7c1841 | 11819 | |
bd81e77b NC |
11820 | Find the name of the undefined variable (if any) that caused the operator o |
11821 | to issue a "Use of uninitialized value" warning. | |
11822 | If match is true, only return a name if it's value matches uninit_sv. | |
11823 | So roughly speaking, if a unary operator (such as OP_COS) generates a | |
11824 | warning, then following the direct child of the op may yield an | |
11825 | OP_PADSV or OP_GV that gives the name of the undefined variable. On the | |
11826 | other hand, with OP_ADD there are two branches to follow, so we only print | |
11827 | the variable name if we get an exact match. | |
1d7c1841 | 11828 | |
bd81e77b | 11829 | The name is returned as a mortal SV. |
1d7c1841 | 11830 | |
bd81e77b NC |
11831 | Assumes that PL_op is the op that originally triggered the error, and that |
11832 | PL_comppad/PL_curpad points to the currently executing pad. | |
1d7c1841 | 11833 | |
bd81e77b NC |
11834 | =cut |
11835 | */ | |
1d7c1841 | 11836 | |
bd81e77b NC |
11837 | STATIC SV * |
11838 | S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match) | |
11839 | { | |
11840 | dVAR; | |
11841 | SV *sv; | |
11842 | AV *av; | |
11843 | GV *gv; | |
11844 | OP *o, *o2, *kid; | |
1d7c1841 | 11845 | |
bd81e77b NC |
11846 | if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef || |
11847 | uninit_sv == &PL_sv_placeholder))) | |
a0714e2c | 11848 | return NULL; |
1d7c1841 | 11849 | |
bd81e77b | 11850 | switch (obase->op_type) { |
1d7c1841 | 11851 | |
bd81e77b NC |
11852 | case OP_RV2AV: |
11853 | case OP_RV2HV: | |
11854 | case OP_PADAV: | |
11855 | case OP_PADHV: | |
11856 | { | |
11857 | const bool pad = (obase->op_type == OP_PADAV || obase->op_type == OP_PADHV); | |
11858 | const bool hash = (obase->op_type == OP_PADHV || obase->op_type == OP_RV2HV); | |
11859 | I32 index = 0; | |
a0714e2c | 11860 | SV *keysv = NULL; |
bd81e77b | 11861 | int subscript_type = FUV_SUBSCRIPT_WITHIN; |
1d7c1841 | 11862 | |
bd81e77b NC |
11863 | if (pad) { /* @lex, %lex */ |
11864 | sv = PAD_SVl(obase->op_targ); | |
a0714e2c | 11865 | gv = NULL; |
bd81e77b NC |
11866 | } |
11867 | else { | |
11868 | if (cUNOPx(obase)->op_first->op_type == OP_GV) { | |
11869 | /* @global, %global */ | |
11870 | gv = cGVOPx_gv(cUNOPx(obase)->op_first); | |
11871 | if (!gv) | |
11872 | break; | |
11873 | sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv); | |
11874 | } | |
11875 | else /* @{expr}, %{expr} */ | |
11876 | return find_uninit_var(cUNOPx(obase)->op_first, | |
11877 | uninit_sv, match); | |
11878 | } | |
1d7c1841 | 11879 | |
bd81e77b NC |
11880 | /* attempt to find a match within the aggregate */ |
11881 | if (hash) { | |
d4c19fe8 | 11882 | keysv = find_hash_subscript((HV*)sv, uninit_sv); |
bd81e77b NC |
11883 | if (keysv) |
11884 | subscript_type = FUV_SUBSCRIPT_HASH; | |
11885 | } | |
11886 | else { | |
e15d5972 | 11887 | index = find_array_subscript((AV*)sv, uninit_sv); |
bd81e77b NC |
11888 | if (index >= 0) |
11889 | subscript_type = FUV_SUBSCRIPT_ARRAY; | |
11890 | } | |
1d7c1841 | 11891 | |
bd81e77b NC |
11892 | if (match && subscript_type == FUV_SUBSCRIPT_WITHIN) |
11893 | break; | |
1d7c1841 | 11894 | |
bd81e77b NC |
11895 | return varname(gv, hash ? '%' : '@', obase->op_targ, |
11896 | keysv, index, subscript_type); | |
11897 | } | |
1d7c1841 | 11898 | |
bd81e77b NC |
11899 | case OP_PADSV: |
11900 | if (match && PAD_SVl(obase->op_targ) != uninit_sv) | |
11901 | break; | |
a0714e2c SS |
11902 | return varname(NULL, '$', obase->op_targ, |
11903 | NULL, 0, FUV_SUBSCRIPT_NONE); | |
1d7c1841 | 11904 | |
bd81e77b NC |
11905 | case OP_GVSV: |
11906 | gv = cGVOPx_gv(obase); | |
11907 | if (!gv || (match && GvSV(gv) != uninit_sv)) | |
11908 | break; | |
a0714e2c | 11909 | return varname(gv, '$', 0, NULL, 0, FUV_SUBSCRIPT_NONE); |
1d7c1841 | 11910 | |
bd81e77b NC |
11911 | case OP_AELEMFAST: |
11912 | if (obase->op_flags & OPf_SPECIAL) { /* lexical array */ | |
11913 | if (match) { | |
11914 | SV **svp; | |
11915 | av = (AV*)PAD_SV(obase->op_targ); | |
11916 | if (!av || SvRMAGICAL(av)) | |
11917 | break; | |
11918 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
11919 | if (!svp || *svp != uninit_sv) | |
11920 | break; | |
11921 | } | |
a0714e2c SS |
11922 | return varname(NULL, '$', obase->op_targ, |
11923 | NULL, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
bd81e77b NC |
11924 | } |
11925 | else { | |
11926 | gv = cGVOPx_gv(obase); | |
11927 | if (!gv) | |
11928 | break; | |
11929 | if (match) { | |
11930 | SV **svp; | |
11931 | av = GvAV(gv); | |
11932 | if (!av || SvRMAGICAL(av)) | |
11933 | break; | |
11934 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
11935 | if (!svp || *svp != uninit_sv) | |
11936 | break; | |
11937 | } | |
11938 | return varname(gv, '$', 0, | |
a0714e2c | 11939 | NULL, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); |
bd81e77b NC |
11940 | } |
11941 | break; | |
1d7c1841 | 11942 | |
bd81e77b NC |
11943 | case OP_EXISTS: |
11944 | o = cUNOPx(obase)->op_first; | |
11945 | if (!o || o->op_type != OP_NULL || | |
11946 | ! (o->op_targ == OP_AELEM || o->op_targ == OP_HELEM)) | |
11947 | break; | |
11948 | return find_uninit_var(cBINOPo->op_last, uninit_sv, match); | |
a2efc822 | 11949 | |
bd81e77b NC |
11950 | case OP_AELEM: |
11951 | case OP_HELEM: | |
11952 | if (PL_op == obase) | |
11953 | /* $a[uninit_expr] or $h{uninit_expr} */ | |
11954 | return find_uninit_var(cBINOPx(obase)->op_last, uninit_sv, match); | |
081fc587 | 11955 | |
a0714e2c | 11956 | gv = NULL; |
bd81e77b NC |
11957 | o = cBINOPx(obase)->op_first; |
11958 | kid = cBINOPx(obase)->op_last; | |
8cf8f3d1 | 11959 | |
bd81e77b | 11960 | /* get the av or hv, and optionally the gv */ |
a0714e2c | 11961 | sv = NULL; |
bd81e77b NC |
11962 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) { |
11963 | sv = PAD_SV(o->op_targ); | |
11964 | } | |
11965 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_RV2HV) | |
11966 | && cUNOPo->op_first->op_type == OP_GV) | |
11967 | { | |
11968 | gv = cGVOPx_gv(cUNOPo->op_first); | |
11969 | if (!gv) | |
11970 | break; | |
11971 | sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv); | |
11972 | } | |
11973 | if (!sv) | |
11974 | break; | |
11975 | ||
11976 | if (kid && kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) { | |
11977 | /* index is constant */ | |
11978 | if (match) { | |
11979 | if (SvMAGICAL(sv)) | |
11980 | break; | |
11981 | if (obase->op_type == OP_HELEM) { | |
11982 | HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0); | |
11983 | if (!he || HeVAL(he) != uninit_sv) | |
11984 | break; | |
11985 | } | |
11986 | else { | |
00b6aa41 | 11987 | SV * const * const svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE); |
bd81e77b NC |
11988 | if (!svp || *svp != uninit_sv) |
11989 | break; | |
11990 | } | |
11991 | } | |
11992 | if (obase->op_type == OP_HELEM) | |
11993 | return varname(gv, '%', o->op_targ, | |
11994 | cSVOPx_sv(kid), 0, FUV_SUBSCRIPT_HASH); | |
11995 | else | |
a0714e2c | 11996 | return varname(gv, '@', o->op_targ, NULL, |
bd81e77b | 11997 | SvIV(cSVOPx_sv(kid)), FUV_SUBSCRIPT_ARRAY); |
bd81e77b NC |
11998 | } |
11999 | else { | |
12000 | /* index is an expression; | |
12001 | * attempt to find a match within the aggregate */ | |
12002 | if (obase->op_type == OP_HELEM) { | |
d4c19fe8 | 12003 | SV * const keysv = find_hash_subscript((HV*)sv, uninit_sv); |
bd81e77b NC |
12004 | if (keysv) |
12005 | return varname(gv, '%', o->op_targ, | |
12006 | keysv, 0, FUV_SUBSCRIPT_HASH); | |
12007 | } | |
12008 | else { | |
d4c19fe8 | 12009 | const I32 index = find_array_subscript((AV*)sv, uninit_sv); |
bd81e77b NC |
12010 | if (index >= 0) |
12011 | return varname(gv, '@', o->op_targ, | |
a0714e2c | 12012 | NULL, index, FUV_SUBSCRIPT_ARRAY); |
bd81e77b NC |
12013 | } |
12014 | if (match) | |
12015 | break; | |
12016 | return varname(gv, | |
12017 | (o->op_type == OP_PADAV || o->op_type == OP_RV2AV) | |
12018 | ? '@' : '%', | |
a0714e2c | 12019 | o->op_targ, NULL, 0, FUV_SUBSCRIPT_WITHIN); |
f284b03f | 12020 | } |
bd81e77b | 12021 | break; |
dc507217 | 12022 | |
bd81e77b NC |
12023 | case OP_AASSIGN: |
12024 | /* only examine RHS */ | |
12025 | return find_uninit_var(cBINOPx(obase)->op_first, uninit_sv, match); | |
6d26897e | 12026 | |
bd81e77b NC |
12027 | case OP_OPEN: |
12028 | o = cUNOPx(obase)->op_first; | |
12029 | if (o->op_type == OP_PUSHMARK) | |
12030 | o = o->op_sibling; | |
1d7c1841 | 12031 | |
bd81e77b NC |
12032 | if (!o->op_sibling) { |
12033 | /* one-arg version of open is highly magical */ | |
a0ae6670 | 12034 | |
bd81e77b NC |
12035 | if (o->op_type == OP_GV) { /* open FOO; */ |
12036 | gv = cGVOPx_gv(o); | |
12037 | if (match && GvSV(gv) != uninit_sv) | |
12038 | break; | |
12039 | return varname(gv, '$', 0, | |
a0714e2c | 12040 | NULL, 0, FUV_SUBSCRIPT_NONE); |
bd81e77b NC |
12041 | } |
12042 | /* other possibilities not handled are: | |
12043 | * open $x; or open my $x; should return '${*$x}' | |
12044 | * open expr; should return '$'.expr ideally | |
12045 | */ | |
12046 | break; | |
12047 | } | |
12048 | goto do_op; | |
ccfc67b7 | 12049 | |
bd81e77b NC |
12050 | /* ops where $_ may be an implicit arg */ |
12051 | case OP_TRANS: | |
12052 | case OP_SUBST: | |
12053 | case OP_MATCH: | |
12054 | if ( !(obase->op_flags & OPf_STACKED)) { | |
12055 | if (uninit_sv == ((obase->op_private & OPpTARGET_MY) | |
12056 | ? PAD_SVl(obase->op_targ) | |
12057 | : DEFSV)) | |
12058 | { | |
12059 | sv = sv_newmortal(); | |
12060 | sv_setpvn(sv, "$_", 2); | |
12061 | return sv; | |
12062 | } | |
12063 | } | |
12064 | goto do_op; | |
9f4817db | 12065 | |
bd81e77b NC |
12066 | case OP_PRTF: |
12067 | case OP_PRINT: | |
3ef1310e | 12068 | case OP_SAY: |
bd81e77b NC |
12069 | /* skip filehandle as it can't produce 'undef' warning */ |
12070 | o = cUNOPx(obase)->op_first; | |
12071 | if ((obase->op_flags & OPf_STACKED) && o->op_type == OP_PUSHMARK) | |
12072 | o = o->op_sibling->op_sibling; | |
12073 | goto do_op2; | |
9f4817db | 12074 | |
9f4817db | 12075 | |
bd81e77b NC |
12076 | case OP_RV2SV: |
12077 | case OP_CUSTOM: | |
12078 | case OP_ENTERSUB: | |
12079 | match = 1; /* XS or custom code could trigger random warnings */ | |
12080 | goto do_op; | |
9f4817db | 12081 | |
cc4b8646 DM |
12082 | case OP_POS: |
12083 | /* def-ness of rval pos() is independent of the def-ness of its arg */ | |
12084 | if ( !(obase->op_flags & OPf_MOD)) | |
12085 | break; | |
12086 | ||
bd81e77b NC |
12087 | case OP_SCHOMP: |
12088 | case OP_CHOMP: | |
12089 | if (SvROK(PL_rs) && uninit_sv == SvRV(PL_rs)) | |
396482e1 | 12090 | return sv_2mortal(newSVpvs("${$/}")); |
5f66b61c | 12091 | /*FALLTHROUGH*/ |
5d170f3a | 12092 | |
bd81e77b NC |
12093 | default: |
12094 | do_op: | |
12095 | if (!(obase->op_flags & OPf_KIDS)) | |
12096 | break; | |
12097 | o = cUNOPx(obase)->op_first; | |
12098 | ||
12099 | do_op2: | |
12100 | if (!o) | |
12101 | break; | |
f9893866 | 12102 | |
bd81e77b NC |
12103 | /* if all except one arg are constant, or have no side-effects, |
12104 | * or are optimized away, then it's unambiguous */ | |
5f66b61c | 12105 | o2 = NULL; |
bd81e77b | 12106 | for (kid=o; kid; kid = kid->op_sibling) { |
e15d5972 AL |
12107 | if (kid) { |
12108 | const OPCODE type = kid->op_type; | |
12109 | if ( (type == OP_CONST && SvOK(cSVOPx_sv(kid))) | |
12110 | || (type == OP_NULL && ! (kid->op_flags & OPf_KIDS)) | |
12111 | || (type == OP_PUSHMARK) | |
bd81e77b | 12112 | ) |
bd81e77b | 12113 | continue; |
e15d5972 | 12114 | } |
bd81e77b | 12115 | if (o2) { /* more than one found */ |
5f66b61c | 12116 | o2 = NULL; |
bd81e77b NC |
12117 | break; |
12118 | } | |
12119 | o2 = kid; | |
12120 | } | |
12121 | if (o2) | |
12122 | return find_uninit_var(o2, uninit_sv, match); | |
7a5fa8a2 | 12123 | |
bd81e77b NC |
12124 | /* scan all args */ |
12125 | while (o) { | |
12126 | sv = find_uninit_var(o, uninit_sv, 1); | |
12127 | if (sv) | |
12128 | return sv; | |
12129 | o = o->op_sibling; | |
d0063567 | 12130 | } |
bd81e77b | 12131 | break; |
f9893866 | 12132 | } |
a0714e2c | 12133 | return NULL; |
9f4817db JH |
12134 | } |
12135 | ||
220e2d4e | 12136 | |
bd81e77b NC |
12137 | /* |
12138 | =for apidoc report_uninit | |
68795e93 | 12139 | |
bd81e77b | 12140 | Print appropriate "Use of uninitialized variable" warning |
220e2d4e | 12141 | |
bd81e77b NC |
12142 | =cut |
12143 | */ | |
220e2d4e | 12144 | |
bd81e77b NC |
12145 | void |
12146 | Perl_report_uninit(pTHX_ SV* uninit_sv) | |
220e2d4e | 12147 | { |
97aff369 | 12148 | dVAR; |
bd81e77b | 12149 | if (PL_op) { |
a0714e2c | 12150 | SV* varname = NULL; |
bd81e77b NC |
12151 | if (uninit_sv) { |
12152 | varname = find_uninit_var(PL_op, uninit_sv,0); | |
12153 | if (varname) | |
12154 | sv_insert(varname, 0, 0, " ", 1); | |
12155 | } | |
12156 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, | |
12157 | varname ? SvPV_nolen_const(varname) : "", | |
12158 | " in ", OP_DESC(PL_op)); | |
220e2d4e | 12159 | } |
a73e8557 | 12160 | else |
bd81e77b NC |
12161 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
12162 | "", "", ""); | |
220e2d4e | 12163 | } |
f9893866 | 12164 | |
241d1a3b NC |
12165 | /* |
12166 | * Local variables: | |
12167 | * c-indentation-style: bsd | |
12168 | * c-basic-offset: 4 | |
12169 | * indent-tabs-mode: t | |
12170 | * End: | |
12171 | * | |
37442d52 RGS |
12172 | * ex: set ts=8 sts=4 sw=4 noet: |
12173 | */ |