Commit | Line | Data |
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a0d0e21e | 1 | /* sv.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
241d1a3b | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e | 9 | * "I wonder what the Entish is for 'yes' and 'no'," he thought. |
645c22ef DM |
10 | * |
11 | * | |
5e045b90 AMS |
12 | * This file contains the code that creates, manipulates and destroys |
13 | * scalar values (SVs). The other types (AV, HV, GV, etc.) reuse the | |
14 | * structure of an SV, so their creation and destruction is handled | |
15 | * here; higher-level functions are in av.c, hv.c, and so on. Opcode | |
16 | * level functions (eg. substr, split, join) for each of the types are | |
17 | * in the pp*.c files. | |
79072805 LW |
18 | */ |
19 | ||
20 | #include "EXTERN.h" | |
864dbfa3 | 21 | #define PERL_IN_SV_C |
79072805 | 22 | #include "perl.h" |
d2f185dc | 23 | #include "regcomp.h" |
79072805 | 24 | |
51371543 | 25 | #define FCALL *f |
2c5424a7 | 26 | |
2f8ed50e OS |
27 | #ifdef __Lynx__ |
28 | /* Missing proto on LynxOS */ | |
29 | char *gconvert(double, int, int, char *); | |
30 | #endif | |
31 | ||
e23c8137 JH |
32 | #ifdef PERL_UTF8_CACHE_ASSERT |
33 | /* The cache element 0 is the Unicode offset; | |
34 | * the cache element 1 is the byte offset of the element 0; | |
35 | * the cache element 2 is the Unicode length of the substring; | |
36 | * the cache element 3 is the byte length of the substring; | |
37 | * The checking of the substring side would be good | |
38 | * but substr() has enough code paths to make my head spin; | |
39 | * if adding more checks watch out for the following tests: | |
40 | * t/op/index.t t/op/length.t t/op/pat.t t/op/substr.t | |
41 | * lib/utf8.t lib/Unicode/Collate/t/index.t | |
42 | * --jhi | |
43 | */ | |
44 | #define ASSERT_UTF8_CACHE(cache) \ | |
45 | STMT_START { if (cache) { assert((cache)[0] <= (cache)[1]); } } STMT_END | |
46 | #else | |
47 | #define ASSERT_UTF8_CACHE(cache) NOOP | |
48 | #endif | |
49 | ||
f8c7b90f | 50 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 51 | #define SV_COW_NEXT_SV(sv) INT2PTR(SV *,SvUVX(sv)) |
607fa7f2 | 52 | #define SV_COW_NEXT_SV_SET(current,next) SvUV_set(current, PTR2UV(next)) |
b5ccf5f2 | 53 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
765f542d | 54 | on-write. */ |
765f542d | 55 | #endif |
645c22ef DM |
56 | |
57 | /* ============================================================================ | |
58 | ||
59 | =head1 Allocation and deallocation of SVs. | |
60 | ||
5e045b90 AMS |
61 | An SV (or AV, HV, etc.) is allocated in two parts: the head (struct sv, |
62 | av, hv...) contains type and reference count information, as well as a | |
63 | pointer to the body (struct xrv, xpv, xpviv...), which contains fields | |
64 | specific to each type. | |
65 | ||
93e68bfb JC |
66 | In all but the most memory-paranoid configuations (ex: PURIFY), this |
67 | allocation is done using arenas, which by default are approximately 4K | |
68 | chunks of memory parcelled up into N heads or bodies (of same size). | |
69 | Sv-bodies are allocated by their sv-type, guaranteeing size | |
70 | consistency needed to allocate safely from arrays. | |
71 | ||
72 | The first slot in each arena is reserved, and is used to hold a link | |
73 | to the next arena. In the case of heads, the unused first slot also | |
74 | contains some flags and a note of the number of slots. Snaked through | |
75 | each arena chain is a linked list of free items; when this becomes | |
76 | empty, an extra arena is allocated and divided up into N items which | |
77 | are threaded into the free list. | |
645c22ef DM |
78 | |
79 | The following global variables are associated with arenas: | |
80 | ||
81 | PL_sv_arenaroot pointer to list of SV arenas | |
82 | PL_sv_root pointer to list of free SV structures | |
83 | ||
93e68bfb JC |
84 | PL_body_arenaroots[] array of pointers to list of arenas, 1 per svtype |
85 | PL_body_roots[] array of pointers to list of free bodies of svtype | |
86 | arrays are indexed by the svtype needed | |
645c22ef | 87 | |
93e68bfb JC |
88 | Note that some of the larger and more rarely used body types (eg |
89 | xpvio) are not allocated using arenas, but are instead just | |
90 | malloc()/free()ed as required. | |
91 | ||
92 | In addition, a few SV heads are not allocated from an arena, but are | |
93 | instead directly created as static or auto variables, eg PL_sv_undef. | |
94 | The size of arenas can be changed from the default by setting | |
95 | PERL_ARENA_SIZE appropriately at compile time. | |
645c22ef DM |
96 | |
97 | The SV arena serves the secondary purpose of allowing still-live SVs | |
98 | to be located and destroyed during final cleanup. | |
99 | ||
100 | At the lowest level, the macros new_SV() and del_SV() grab and free | |
101 | an SV head. (If debugging with -DD, del_SV() calls the function S_del_sv() | |
102 | to return the SV to the free list with error checking.) new_SV() calls | |
103 | more_sv() / sv_add_arena() to add an extra arena if the free list is empty. | |
104 | SVs in the free list have their SvTYPE field set to all ones. | |
105 | ||
106 | Similarly, there are macros new_XIV()/del_XIV(), new_XNV()/del_XNV() etc | |
107 | that allocate and return individual body types. Normally these are mapped | |
ff276b08 RG |
108 | to the arena-manipulating functions new_xiv()/del_xiv() etc, but may be |
109 | instead mapped directly to malloc()/free() if PURIFY is defined. The | |
645c22ef DM |
110 | new/del functions remove from, or add to, the appropriate PL_foo_root |
111 | list, and call more_xiv() etc to add a new arena if the list is empty. | |
112 | ||
ff276b08 | 113 | At the time of very final cleanup, sv_free_arenas() is called from |
645c22ef | 114 | perl_destruct() to physically free all the arenas allocated since the |
6a93a7e5 | 115 | start of the interpreter. |
645c22ef DM |
116 | |
117 | Manipulation of any of the PL_*root pointers is protected by enclosing | |
118 | LOCK_SV_MUTEX; ... UNLOCK_SV_MUTEX calls which should Do the Right Thing | |
119 | if threads are enabled. | |
120 | ||
121 | The function visit() scans the SV arenas list, and calls a specified | |
122 | function for each SV it finds which is still live - ie which has an SvTYPE | |
123 | other than all 1's, and a non-zero SvREFCNT. visit() is used by the | |
124 | following functions (specified as [function that calls visit()] / [function | |
125 | called by visit() for each SV]): | |
126 | ||
127 | sv_report_used() / do_report_used() | |
128 | dump all remaining SVs (debugging aid) | |
129 | ||
130 | sv_clean_objs() / do_clean_objs(),do_clean_named_objs() | |
131 | Attempt to free all objects pointed to by RVs, | |
132 | and, unless DISABLE_DESTRUCTOR_KLUDGE is defined, | |
133 | try to do the same for all objects indirectly | |
134 | referenced by typeglobs too. Called once from | |
135 | perl_destruct(), prior to calling sv_clean_all() | |
136 | below. | |
137 | ||
138 | sv_clean_all() / do_clean_all() | |
139 | SvREFCNT_dec(sv) each remaining SV, possibly | |
140 | triggering an sv_free(). It also sets the | |
141 | SVf_BREAK flag on the SV to indicate that the | |
142 | refcnt has been artificially lowered, and thus | |
143 | stopping sv_free() from giving spurious warnings | |
144 | about SVs which unexpectedly have a refcnt | |
145 | of zero. called repeatedly from perl_destruct() | |
146 | until there are no SVs left. | |
147 | ||
93e68bfb | 148 | =head2 Arena allocator API Summary |
645c22ef DM |
149 | |
150 | Private API to rest of sv.c | |
151 | ||
152 | new_SV(), del_SV(), | |
153 | ||
154 | new_XIV(), del_XIV(), | |
155 | new_XNV(), del_XNV(), | |
156 | etc | |
157 | ||
158 | Public API: | |
159 | ||
8cf8f3d1 | 160 | sv_report_used(), sv_clean_objs(), sv_clean_all(), sv_free_arenas() |
645c22ef DM |
161 | |
162 | ||
163 | =cut | |
164 | ||
165 | ============================================================================ */ | |
166 | ||
167 | ||
51371543 | 168 | |
4561caa4 CS |
169 | /* |
170 | * "A time to plant, and a time to uproot what was planted..." | |
171 | */ | |
172 | ||
77354fb4 NC |
173 | /* |
174 | * nice_chunk and nice_chunk size need to be set | |
175 | * and queried under the protection of sv_mutex | |
176 | */ | |
177 | void | |
178 | Perl_offer_nice_chunk(pTHX_ void *chunk, U32 chunk_size) | |
179 | { | |
180 | void *new_chunk; | |
181 | U32 new_chunk_size; | |
182 | LOCK_SV_MUTEX; | |
183 | new_chunk = (void *)(chunk); | |
184 | new_chunk_size = (chunk_size); | |
185 | if (new_chunk_size > PL_nice_chunk_size) { | |
186 | Safefree(PL_nice_chunk); | |
187 | PL_nice_chunk = (char *) new_chunk; | |
188 | PL_nice_chunk_size = new_chunk_size; | |
189 | } else { | |
190 | Safefree(chunk); | |
191 | } | |
192 | UNLOCK_SV_MUTEX; | |
193 | } | |
cac9b346 | 194 | |
fd0854ff | 195 | #ifdef DEBUG_LEAKING_SCALARS |
22162ca8 | 196 | # define FREE_SV_DEBUG_FILE(sv) Safefree((sv)->sv_debug_file) |
fd0854ff DM |
197 | #else |
198 | # define FREE_SV_DEBUG_FILE(sv) | |
199 | #endif | |
200 | ||
48614a46 NC |
201 | #ifdef PERL_POISON |
202 | # define SvARENA_CHAIN(sv) ((sv)->sv_u.svu_rv) | |
203 | /* Whilst I'd love to do this, it seems that things like to check on | |
204 | unreferenced scalars | |
205 | # define POSION_SV_HEAD(sv) Poison(sv, 1, struct STRUCT_SV) | |
206 | */ | |
207 | # define POSION_SV_HEAD(sv) Poison(&SvANY(sv), 1, void *), \ | |
208 | Poison(&SvREFCNT(sv), 1, U32) | |
209 | #else | |
210 | # define SvARENA_CHAIN(sv) SvANY(sv) | |
211 | # define POSION_SV_HEAD(sv) | |
212 | #endif | |
213 | ||
053fc874 GS |
214 | #define plant_SV(p) \ |
215 | STMT_START { \ | |
fd0854ff | 216 | FREE_SV_DEBUG_FILE(p); \ |
48614a46 NC |
217 | POSION_SV_HEAD(p); \ |
218 | SvARENA_CHAIN(p) = (void *)PL_sv_root; \ | |
053fc874 GS |
219 | SvFLAGS(p) = SVTYPEMASK; \ |
220 | PL_sv_root = (p); \ | |
221 | --PL_sv_count; \ | |
222 | } STMT_END | |
a0d0e21e | 223 | |
fba3b22e | 224 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
225 | #define uproot_SV(p) \ |
226 | STMT_START { \ | |
227 | (p) = PL_sv_root; \ | |
48614a46 | 228 | PL_sv_root = (SV*)SvARENA_CHAIN(p); \ |
053fc874 GS |
229 | ++PL_sv_count; \ |
230 | } STMT_END | |
231 | ||
645c22ef | 232 | |
cac9b346 NC |
233 | /* make some more SVs by adding another arena */ |
234 | ||
235 | /* sv_mutex must be held while calling more_sv() */ | |
236 | STATIC SV* | |
237 | S_more_sv(pTHX) | |
238 | { | |
239 | SV* sv; | |
240 | ||
241 | if (PL_nice_chunk) { | |
242 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
243 | PL_nice_chunk = Nullch; | |
244 | PL_nice_chunk_size = 0; | |
245 | } | |
246 | else { | |
247 | char *chunk; /* must use New here to match call to */ | |
a02a5408 | 248 | Newx(chunk,PERL_ARENA_SIZE,char); /* Safefree() in sv_free_arenas() */ |
2e7ed132 | 249 | sv_add_arena(chunk, PERL_ARENA_SIZE, 0); |
cac9b346 NC |
250 | } |
251 | uproot_SV(sv); | |
252 | return sv; | |
253 | } | |
254 | ||
645c22ef DM |
255 | /* new_SV(): return a new, empty SV head */ |
256 | ||
eba0f806 DM |
257 | #ifdef DEBUG_LEAKING_SCALARS |
258 | /* provide a real function for a debugger to play with */ | |
259 | STATIC SV* | |
260 | S_new_SV(pTHX) | |
261 | { | |
262 | SV* sv; | |
263 | ||
264 | LOCK_SV_MUTEX; | |
265 | if (PL_sv_root) | |
266 | uproot_SV(sv); | |
267 | else | |
cac9b346 | 268 | sv = S_more_sv(aTHX); |
eba0f806 DM |
269 | UNLOCK_SV_MUTEX; |
270 | SvANY(sv) = 0; | |
271 | SvREFCNT(sv) = 1; | |
272 | SvFLAGS(sv) = 0; | |
fd0854ff DM |
273 | sv->sv_debug_optype = PL_op ? PL_op->op_type : 0; |
274 | sv->sv_debug_line = (U16) ((PL_copline == NOLINE) ? | |
275 | (PL_curcop ? CopLINE(PL_curcop) : 0) : PL_copline); | |
276 | sv->sv_debug_inpad = 0; | |
277 | sv->sv_debug_cloned = 0; | |
fd0854ff | 278 | sv->sv_debug_file = PL_curcop ? savepv(CopFILE(PL_curcop)): NULL; |
fd0854ff | 279 | |
eba0f806 DM |
280 | return sv; |
281 | } | |
282 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
283 | ||
284 | #else | |
285 | # define new_SV(p) \ | |
053fc874 GS |
286 | STMT_START { \ |
287 | LOCK_SV_MUTEX; \ | |
288 | if (PL_sv_root) \ | |
289 | uproot_SV(p); \ | |
290 | else \ | |
cac9b346 | 291 | (p) = S_more_sv(aTHX); \ |
053fc874 GS |
292 | UNLOCK_SV_MUTEX; \ |
293 | SvANY(p) = 0; \ | |
294 | SvREFCNT(p) = 1; \ | |
295 | SvFLAGS(p) = 0; \ | |
296 | } STMT_END | |
eba0f806 | 297 | #endif |
463ee0b2 | 298 | |
645c22ef DM |
299 | |
300 | /* del_SV(): return an empty SV head to the free list */ | |
301 | ||
a0d0e21e | 302 | #ifdef DEBUGGING |
4561caa4 | 303 | |
053fc874 GS |
304 | #define del_SV(p) \ |
305 | STMT_START { \ | |
306 | LOCK_SV_MUTEX; \ | |
aea4f609 | 307 | if (DEBUG_D_TEST) \ |
053fc874 GS |
308 | del_sv(p); \ |
309 | else \ | |
310 | plant_SV(p); \ | |
311 | UNLOCK_SV_MUTEX; \ | |
312 | } STMT_END | |
a0d0e21e | 313 | |
76e3520e | 314 | STATIC void |
cea2e8a9 | 315 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 316 | { |
aea4f609 | 317 | if (DEBUG_D_TEST) { |
4633a7c4 | 318 | SV* sva; |
a3b680e6 | 319 | bool ok = 0; |
3280af22 | 320 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
53c1dcc0 AL |
321 | const SV * const sv = sva + 1; |
322 | const SV * const svend = &sva[SvREFCNT(sva)]; | |
c0ff570e | 323 | if (p >= sv && p < svend) { |
a0d0e21e | 324 | ok = 1; |
c0ff570e NC |
325 | break; |
326 | } | |
a0d0e21e LW |
327 | } |
328 | if (!ok) { | |
0453d815 | 329 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 330 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
331 | "Attempt to free non-arena SV: 0x%"UVxf |
332 | pTHX__FORMAT, PTR2UV(p) pTHX__VALUE); | |
a0d0e21e LW |
333 | return; |
334 | } | |
335 | } | |
4561caa4 | 336 | plant_SV(p); |
463ee0b2 | 337 | } |
a0d0e21e | 338 | |
4561caa4 CS |
339 | #else /* ! DEBUGGING */ |
340 | ||
341 | #define del_SV(p) plant_SV(p) | |
342 | ||
343 | #endif /* DEBUGGING */ | |
463ee0b2 | 344 | |
645c22ef DM |
345 | |
346 | /* | |
ccfc67b7 JH |
347 | =head1 SV Manipulation Functions |
348 | ||
645c22ef DM |
349 | =for apidoc sv_add_arena |
350 | ||
351 | Given a chunk of memory, link it to the head of the list of arenas, | |
352 | and split it into a list of free SVs. | |
353 | ||
354 | =cut | |
355 | */ | |
356 | ||
4633a7c4 | 357 | void |
864dbfa3 | 358 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 359 | { |
0bd48802 | 360 | SV* const sva = (SV*)ptr; |
463ee0b2 LW |
361 | register SV* sv; |
362 | register SV* svend; | |
4633a7c4 LW |
363 | |
364 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 365 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
366 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
367 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
368 | ||
3280af22 NIS |
369 | PL_sv_arenaroot = sva; |
370 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
371 | |
372 | svend = &sva[SvREFCNT(sva) - 1]; | |
373 | sv = sva + 1; | |
463ee0b2 | 374 | while (sv < svend) { |
48614a46 | 375 | SvARENA_CHAIN(sv) = (void *)(SV*)(sv + 1); |
03e36789 | 376 | #ifdef DEBUGGING |
978b032e | 377 | SvREFCNT(sv) = 0; |
03e36789 NC |
378 | #endif |
379 | /* Must always set typemask because it's awlays checked in on cleanup | |
380 | when the arenas are walked looking for objects. */ | |
8990e307 | 381 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
382 | sv++; |
383 | } | |
48614a46 | 384 | SvARENA_CHAIN(sv) = 0; |
03e36789 NC |
385 | #ifdef DEBUGGING |
386 | SvREFCNT(sv) = 0; | |
387 | #endif | |
4633a7c4 LW |
388 | SvFLAGS(sv) = SVTYPEMASK; |
389 | } | |
390 | ||
055972dc DM |
391 | /* visit(): call the named function for each non-free SV in the arenas |
392 | * whose flags field matches the flags/mask args. */ | |
645c22ef | 393 | |
5226ed68 | 394 | STATIC I32 |
055972dc | 395 | S_visit(pTHX_ SVFUNC_t f, U32 flags, U32 mask) |
8990e307 | 396 | { |
4633a7c4 | 397 | SV* sva; |
5226ed68 | 398 | I32 visited = 0; |
8990e307 | 399 | |
3280af22 | 400 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
53c1dcc0 | 401 | register const SV * const svend = &sva[SvREFCNT(sva)]; |
a3b680e6 | 402 | register SV* sv; |
4561caa4 | 403 | for (sv = sva + 1; sv < svend; ++sv) { |
055972dc DM |
404 | if (SvTYPE(sv) != SVTYPEMASK |
405 | && (sv->sv_flags & mask) == flags | |
406 | && SvREFCNT(sv)) | |
407 | { | |
acfe0abc | 408 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
409 | ++visited; |
410 | } | |
8990e307 LW |
411 | } |
412 | } | |
5226ed68 | 413 | return visited; |
8990e307 LW |
414 | } |
415 | ||
758a08c3 JH |
416 | #ifdef DEBUGGING |
417 | ||
645c22ef DM |
418 | /* called by sv_report_used() for each live SV */ |
419 | ||
420 | static void | |
acfe0abc | 421 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
422 | { |
423 | if (SvTYPE(sv) != SVTYPEMASK) { | |
424 | PerlIO_printf(Perl_debug_log, "****\n"); | |
425 | sv_dump(sv); | |
426 | } | |
427 | } | |
758a08c3 | 428 | #endif |
645c22ef DM |
429 | |
430 | /* | |
431 | =for apidoc sv_report_used | |
432 | ||
433 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
434 | ||
435 | =cut | |
436 | */ | |
437 | ||
8990e307 | 438 | void |
864dbfa3 | 439 | Perl_sv_report_used(pTHX) |
4561caa4 | 440 | { |
ff270d3a | 441 | #ifdef DEBUGGING |
055972dc | 442 | visit(do_report_used, 0, 0); |
ff270d3a | 443 | #endif |
4561caa4 CS |
444 | } |
445 | ||
645c22ef DM |
446 | /* called by sv_clean_objs() for each live SV */ |
447 | ||
448 | static void | |
e15faf7d | 449 | do_clean_objs(pTHX_ SV *ref) |
645c22ef | 450 | { |
823a54a3 AL |
451 | if (SvROK(ref)) { |
452 | SV * const target = SvRV(ref); | |
453 | if (SvOBJECT(target)) { | |
454 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(ref))); | |
455 | if (SvWEAKREF(ref)) { | |
456 | sv_del_backref(target, ref); | |
457 | SvWEAKREF_off(ref); | |
458 | SvRV_set(ref, NULL); | |
459 | } else { | |
460 | SvROK_off(ref); | |
461 | SvRV_set(ref, NULL); | |
462 | SvREFCNT_dec(target); | |
463 | } | |
645c22ef DM |
464 | } |
465 | } | |
466 | ||
467 | /* XXX Might want to check arrays, etc. */ | |
468 | } | |
469 | ||
470 | /* called by sv_clean_objs() for each live SV */ | |
471 | ||
472 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
473 | static void | |
acfe0abc | 474 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef DM |
475 | { |
476 | if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) { | |
c69033f2 NC |
477 | if (( |
478 | #ifdef PERL_DONT_CREATE_GVSV | |
479 | GvSV(sv) && | |
480 | #endif | |
481 | SvOBJECT(GvSV(sv))) || | |
645c22ef DM |
482 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || |
483 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
484 | (GvIO(sv) && SvOBJECT(GvIO(sv))) || | |
485 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) | |
486 | { | |
487 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
ec5f3c78 | 488 | SvFLAGS(sv) |= SVf_BREAK; |
645c22ef DM |
489 | SvREFCNT_dec(sv); |
490 | } | |
491 | } | |
492 | } | |
493 | #endif | |
494 | ||
495 | /* | |
496 | =for apidoc sv_clean_objs | |
497 | ||
498 | Attempt to destroy all objects not yet freed | |
499 | ||
500 | =cut | |
501 | */ | |
502 | ||
4561caa4 | 503 | void |
864dbfa3 | 504 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 505 | { |
3280af22 | 506 | PL_in_clean_objs = TRUE; |
055972dc | 507 | visit(do_clean_objs, SVf_ROK, SVf_ROK); |
4561caa4 | 508 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
2d0f3c12 | 509 | /* some barnacles may yet remain, clinging to typeglobs */ |
055972dc | 510 | visit(do_clean_named_objs, SVt_PVGV, SVTYPEMASK); |
4561caa4 | 511 | #endif |
3280af22 | 512 | PL_in_clean_objs = FALSE; |
4561caa4 CS |
513 | } |
514 | ||
645c22ef DM |
515 | /* called by sv_clean_all() for each live SV */ |
516 | ||
517 | static void | |
acfe0abc | 518 | do_clean_all(pTHX_ SV *sv) |
645c22ef DM |
519 | { |
520 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); | |
521 | SvFLAGS(sv) |= SVf_BREAK; | |
0e705b3b DM |
522 | if (PL_comppad == (AV*)sv) { |
523 | PL_comppad = Nullav; | |
524 | PL_curpad = Null(SV**); | |
525 | } | |
645c22ef DM |
526 | SvREFCNT_dec(sv); |
527 | } | |
528 | ||
529 | /* | |
530 | =for apidoc sv_clean_all | |
531 | ||
532 | Decrement the refcnt of each remaining SV, possibly triggering a | |
533 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 534 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
535 | |
536 | =cut | |
537 | */ | |
538 | ||
5226ed68 | 539 | I32 |
864dbfa3 | 540 | Perl_sv_clean_all(pTHX) |
8990e307 | 541 | { |
5226ed68 | 542 | I32 cleaned; |
3280af22 | 543 | PL_in_clean_all = TRUE; |
055972dc | 544 | cleaned = visit(do_clean_all, 0,0); |
3280af22 | 545 | PL_in_clean_all = FALSE; |
5226ed68 | 546 | return cleaned; |
8990e307 | 547 | } |
463ee0b2 | 548 | |
7cfef17e NC |
549 | static void |
550 | S_free_arena(pTHX_ void **root) { | |
551 | while (root) { | |
1b6737cc | 552 | void ** const next = *(void **)root; |
7cfef17e NC |
553 | Safefree(root); |
554 | root = next; | |
555 | } | |
556 | } | |
557 | ||
645c22ef DM |
558 | /* |
559 | =for apidoc sv_free_arenas | |
560 | ||
561 | Deallocate the memory used by all arenas. Note that all the individual SV | |
562 | heads and bodies within the arenas must already have been freed. | |
563 | ||
564 | =cut | |
565 | */ | |
7cfef17e NC |
566 | #define free_arena(name) \ |
567 | STMT_START { \ | |
568 | S_free_arena(aTHX_ (void**) PL_ ## name ## _arenaroot); \ | |
569 | PL_ ## name ## _arenaroot = 0; \ | |
570 | PL_ ## name ## _root = 0; \ | |
571 | } STMT_END | |
572 | ||
4633a7c4 | 573 | void |
864dbfa3 | 574 | Perl_sv_free_arenas(pTHX) |
4633a7c4 LW |
575 | { |
576 | SV* sva; | |
577 | SV* svanext; | |
93e68bfb | 578 | int i; |
4633a7c4 LW |
579 | |
580 | /* Free arenas here, but be careful about fake ones. (We assume | |
581 | contiguity of the fake ones with the corresponding real ones.) */ | |
582 | ||
3280af22 | 583 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
584 | svanext = (SV*) SvANY(sva); |
585 | while (svanext && SvFAKE(svanext)) | |
586 | svanext = (SV*) SvANY(svanext); | |
587 | ||
588 | if (!SvFAKE(sva)) | |
1df70142 | 589 | Safefree(sva); |
4633a7c4 | 590 | } |
93e68bfb JC |
591 | |
592 | for (i=0; i<SVt_LAST; i++) { | |
593 | S_free_arena(aTHX_ (void**) PL_body_arenaroots[i]); | |
594 | PL_body_arenaroots[i] = 0; | |
595 | PL_body_roots[i] = 0; | |
596 | } | |
597 | ||
43c5f42d | 598 | Safefree(PL_nice_chunk); |
3280af22 NIS |
599 | PL_nice_chunk = Nullch; |
600 | PL_nice_chunk_size = 0; | |
601 | PL_sv_arenaroot = 0; | |
602 | PL_sv_root = 0; | |
4633a7c4 LW |
603 | } |
604 | ||
bd81e77b NC |
605 | /* |
606 | Here are mid-level routines that manage the allocation of bodies out | |
607 | of the various arenas. There are 5 kinds of arenas: | |
29489e7c | 608 | |
bd81e77b NC |
609 | 1. SV-head arenas, which are discussed and handled above |
610 | 2. regular body arenas | |
611 | 3. arenas for reduced-size bodies | |
612 | 4. Hash-Entry arenas | |
613 | 5. pte arenas (thread related) | |
29489e7c | 614 | |
bd81e77b NC |
615 | Arena types 2 & 3 are chained by body-type off an array of |
616 | arena-root pointers, which is indexed by svtype. Some of the | |
617 | larger/less used body types are malloced singly, since a large | |
618 | unused block of them is wasteful. Also, several svtypes dont have | |
619 | bodies; the data fits into the sv-head itself. The arena-root | |
620 | pointer thus has a few unused root-pointers (which may be hijacked | |
621 | later for arena types 4,5) | |
29489e7c | 622 | |
bd81e77b NC |
623 | 3 differs from 2 as an optimization; some body types have several |
624 | unused fields in the front of the structure (which are kept in-place | |
625 | for consistency). These bodies can be allocated in smaller chunks, | |
626 | because the leading fields arent accessed. Pointers to such bodies | |
627 | are decremented to point at the unused 'ghost' memory, knowing that | |
628 | the pointers are used with offsets to the real memory. | |
29489e7c | 629 | |
bd81e77b NC |
630 | HE, HEK arenas are managed separately, with separate code, but may |
631 | be merge-able later.. | |
632 | ||
633 | PTE arenas are not sv-bodies, but they share these mid-level | |
634 | mechanics, so are considered here. The new mid-level mechanics rely | |
635 | on the sv_type of the body being allocated, so we just reserve one | |
636 | of the unused body-slots for PTEs, then use it in those (2) PTE | |
637 | contexts below (line ~10k) | |
638 | */ | |
639 | ||
640 | STATIC void * | |
641 | S_more_bodies (pTHX_ size_t size, svtype sv_type) | |
29489e7c | 642 | { |
00b6aa41 AL |
643 | void ** const arena_root = &PL_body_arenaroots[sv_type]; |
644 | void ** const root = &PL_body_roots[sv_type]; | |
bd81e77b NC |
645 | char *start; |
646 | const char *end; | |
647 | const size_t count = PERL_ARENA_SIZE / size; | |
29489e7c | 648 | |
bd81e77b NC |
649 | Newx(start, count*size, char); |
650 | *((void **) start) = *arena_root; | |
651 | *arena_root = (void *)start; | |
29489e7c | 652 | |
bd81e77b | 653 | end = start + (count-1) * size; |
29489e7c | 654 | |
bd81e77b NC |
655 | /* The initial slot is used to link the arenas together, so it isn't to be |
656 | linked into the list of ready-to-use bodies. */ | |
29489e7c | 657 | |
bd81e77b | 658 | start += size; |
29489e7c | 659 | |
bd81e77b | 660 | *root = (void *)start; |
29489e7c | 661 | |
bd81e77b NC |
662 | while (start < end) { |
663 | char * const next = start + size; | |
664 | *(void**) start = (void *)next; | |
665 | start = next; | |
29489e7c | 666 | } |
bd81e77b NC |
667 | *(void **)start = 0; |
668 | ||
669 | return *root; | |
29489e7c DM |
670 | } |
671 | ||
bd81e77b | 672 | /* grab a new thing from the free list, allocating more if necessary */ |
29489e7c | 673 | |
bd81e77b | 674 | /* 1st, the inline version */ |
29489e7c | 675 | |
bd81e77b NC |
676 | #define new_body_inline(xpv, size, sv_type) \ |
677 | STMT_START { \ | |
00b6aa41 | 678 | void ** const r3wt = &PL_body_roots[sv_type]; \ |
bd81e77b NC |
679 | LOCK_SV_MUTEX; \ |
680 | xpv = *((void **)(r3wt)) \ | |
681 | ? *((void **)(r3wt)) : S_more_bodies(aTHX_ size, sv_type); \ | |
682 | *(r3wt) = *(void**)(xpv); \ | |
683 | UNLOCK_SV_MUTEX; \ | |
684 | } STMT_END | |
29489e7c | 685 | |
bd81e77b | 686 | /* now use the inline version in the proper function */ |
29489e7c | 687 | |
bd81e77b | 688 | #ifndef PURIFY |
9393da09 | 689 | |
bd81e77b NC |
690 | /* This isn't being used with -DPURIFY, so don't declare it. Otherwise |
691 | compilers issue warnings. */ | |
9393da09 | 692 | |
bd81e77b NC |
693 | STATIC void * |
694 | S_new_body(pTHX_ size_t size, svtype sv_type) | |
695 | { | |
696 | void *xpv; | |
697 | new_body_inline(xpv, size, sv_type); | |
698 | return xpv; | |
699 | } | |
9393da09 | 700 | |
bd81e77b | 701 | #endif |
53c1dcc0 | 702 | |
bd81e77b | 703 | /* return a thing to the free list */ |
29489e7c | 704 | |
bd81e77b NC |
705 | #define del_body(thing, root) \ |
706 | STMT_START { \ | |
00b6aa41 | 707 | void ** const thing_copy = (void **)thing;\ |
bd81e77b NC |
708 | LOCK_SV_MUTEX; \ |
709 | *thing_copy = *root; \ | |
710 | *root = (void*)thing_copy; \ | |
711 | UNLOCK_SV_MUTEX; \ | |
712 | } STMT_END | |
29489e7c | 713 | |
bd81e77b NC |
714 | /* |
715 | Revisiting type 3 arenas, there are 4 body-types which have some | |
716 | members that are never accessed. They are XPV, XPVIV, XPVAV, | |
717 | XPVHV, which have corresponding types: xpv_allocated, | |
718 | xpviv_allocated, xpvav_allocated, xpvhv_allocated, | |
29489e7c | 719 | |
bd81e77b NC |
720 | For these types, the arenas are carved up into *_allocated size |
721 | chunks, we thus avoid wasted memory for those unaccessed members. | |
722 | When bodies are allocated, we adjust the pointer back in memory by | |
723 | the size of the bit not allocated, so it's as if we allocated the | |
724 | full structure. (But things will all go boom if you write to the | |
725 | part that is "not there", because you'll be overwriting the last | |
726 | members of the preceding structure in memory.) | |
29489e7c | 727 | |
bd81e77b NC |
728 | We calculate the correction using the STRUCT_OFFSET macro. For example, if |
729 | xpv_allocated is the same structure as XPV then the two OFFSETs sum to zero, | |
730 | and the pointer is unchanged. If the allocated structure is smaller (no | |
731 | initial NV actually allocated) then the net effect is to subtract the size | |
732 | of the NV from the pointer, to return a new pointer as if an initial NV were | |
733 | actually allocated. | |
29489e7c | 734 | |
bd81e77b NC |
735 | This is the same trick as was used for NV and IV bodies. Ironically it |
736 | doesn't need to be used for NV bodies any more, because NV is now at the | |
737 | start of the structure. IV bodies don't need it either, because they are | |
738 | no longer allocated. */ | |
29489e7c | 739 | |
bd81e77b NC |
740 | /* The following 2 arrays hide the above details in a pair of |
741 | lookup-tables, allowing us to be body-type agnostic. | |
29489e7c | 742 | |
bd81e77b NC |
743 | size maps svtype to its body's allocated size. |
744 | offset maps svtype to the body-pointer adjustment needed | |
29489e7c | 745 | |
bd81e77b NC |
746 | NB: elements in latter are 0 or <0, and are added during |
747 | allocation, and subtracted during deallocation. It may be clearer | |
748 | to invert the values, and call it shrinkage_by_svtype. | |
29489e7c DM |
749 | */ |
750 | ||
bd81e77b NC |
751 | struct body_details { |
752 | size_t size; /* Size to allocate */ | |
753 | size_t copy; /* Size of structure to copy (may be shorter) */ | |
754 | size_t offset; | |
755 | bool cant_upgrade; /* Can upgrade this type */ | |
756 | bool zero_nv; /* zero the NV when upgrading from this */ | |
757 | bool arena; /* Allocated from an arena */ | |
758 | }; | |
29489e7c | 759 | |
bd81e77b NC |
760 | #define HADNV FALSE |
761 | #define NONV TRUE | |
29489e7c | 762 | |
bd81e77b NC |
763 | #ifdef PURIFY |
764 | /* With -DPURFIY we allocate everything directly, and don't use arenas. | |
765 | This seems a rather elegant way to simplify some of the code below. */ | |
766 | #define HASARENA FALSE | |
767 | #else | |
768 | #define HASARENA TRUE | |
769 | #endif | |
770 | #define NOARENA FALSE | |
29489e7c | 771 | |
bd81e77b | 772 | /* A macro to work out the offset needed to subtract from a pointer to (say) |
29489e7c | 773 | |
bd81e77b NC |
774 | typedef struct { |
775 | STRLEN xpv_cur; | |
776 | STRLEN xpv_len; | |
777 | } xpv_allocated; | |
29489e7c | 778 | |
bd81e77b | 779 | to make its members accessible via a pointer to (say) |
29489e7c | 780 | |
bd81e77b NC |
781 | struct xpv { |
782 | NV xnv_nv; | |
783 | STRLEN xpv_cur; | |
784 | STRLEN xpv_len; | |
785 | }; | |
29489e7c | 786 | |
bd81e77b | 787 | */ |
29489e7c | 788 | |
bd81e77b NC |
789 | #define relative_STRUCT_OFFSET(longer, shorter, member) \ |
790 | (STRUCT_OFFSET(shorter, member) - STRUCT_OFFSET(longer, member)) | |
29489e7c | 791 | |
bd81e77b NC |
792 | /* Calculate the length to copy. Specifically work out the length less any |
793 | final padding the compiler needed to add. See the comment in sv_upgrade | |
794 | for why copying the padding proved to be a bug. */ | |
29489e7c | 795 | |
bd81e77b NC |
796 | #define copy_length(type, last_member) \ |
797 | STRUCT_OFFSET(type, last_member) \ | |
798 | + sizeof (((type*)SvANY((SV*)0))->last_member) | |
29489e7c | 799 | |
bd81e77b NC |
800 | static const struct body_details bodies_by_type[] = { |
801 | {0, 0, 0, FALSE, NONV, NOARENA}, | |
802 | /* IVs are in the head, so the allocation size is 0 */ | |
803 | {0, sizeof(IV), STRUCT_OFFSET(XPVIV, xiv_iv), FALSE, NONV, NOARENA}, | |
804 | /* 8 bytes on most ILP32 with IEEE doubles */ | |
805 | {sizeof(NV), sizeof(NV), 0, FALSE, HADNV, HASARENA}, | |
806 | /* RVs are in the head now */ | |
807 | /* However, this slot is overloaded and used by the pte */ | |
808 | {0, 0, 0, FALSE, NONV, NOARENA}, | |
809 | /* 8 bytes on most ILP32 with IEEE doubles */ | |
810 | {sizeof(xpv_allocated), | |
811 | copy_length(XPV, xpv_len) | |
812 | + relative_STRUCT_OFFSET(XPV, xpv_allocated, xpv_cur), | |
813 | - relative_STRUCT_OFFSET(XPV, xpv_allocated, xpv_cur), | |
814 | FALSE, NONV, HASARENA}, | |
815 | /* 12 */ | |
816 | {sizeof(xpviv_allocated), | |
817 | copy_length(XPVIV, xiv_u) | |
818 | + relative_STRUCT_OFFSET(XPVIV, xpviv_allocated, xpv_cur), | |
819 | - relative_STRUCT_OFFSET(XPVIV, xpviv_allocated, xpv_cur), | |
820 | FALSE, NONV, HASARENA}, | |
821 | /* 20 */ | |
822 | {sizeof(XPVNV), copy_length(XPVNV, xiv_u), 0, FALSE, HADNV, HASARENA}, | |
823 | /* 28 */ | |
824 | {sizeof(XPVMG), copy_length(XPVMG, xmg_stash), 0, FALSE, HADNV, HASARENA}, | |
825 | /* 36 */ | |
826 | {sizeof(XPVBM), sizeof(XPVBM), 0, TRUE, HADNV, HASARENA}, | |
827 | /* 48 */ | |
828 | {sizeof(XPVGV), sizeof(XPVGV), 0, TRUE, HADNV, HASARENA}, | |
829 | /* 64 */ | |
830 | {sizeof(XPVLV), sizeof(XPVLV), 0, TRUE, HADNV, HASARENA}, | |
831 | /* 20 */ | |
832 | {sizeof(xpvav_allocated), | |
833 | copy_length(XPVAV, xmg_stash) | |
834 | + relative_STRUCT_OFFSET(XPVAV, xpvav_allocated, xav_fill), | |
835 | - relative_STRUCT_OFFSET(XPVAV, xpvav_allocated, xav_fill), | |
836 | TRUE, HADNV, HASARENA}, | |
837 | /* 20 */ | |
838 | {sizeof(xpvhv_allocated), | |
839 | copy_length(XPVHV, xmg_stash) | |
840 | + relative_STRUCT_OFFSET(XPVHV, xpvhv_allocated, xhv_fill), | |
841 | - relative_STRUCT_OFFSET(XPVHV, xpvhv_allocated, xhv_fill), | |
842 | TRUE, HADNV, HASARENA}, | |
843 | /* 76 */ | |
844 | {sizeof(XPVCV), sizeof(XPVCV), 0, TRUE, HADNV, HASARENA}, | |
845 | /* 80 */ | |
846 | {sizeof(XPVFM), sizeof(XPVFM), 0, TRUE, HADNV, NOARENA}, | |
847 | /* 84 */ | |
848 | {sizeof(XPVIO), sizeof(XPVIO), 0, TRUE, HADNV, NOARENA} | |
849 | }; | |
29489e7c | 850 | |
bd81e77b NC |
851 | #define new_body_type(sv_type) \ |
852 | (void *)((char *)S_new_body(aTHX_ bodies_by_type[sv_type].size, sv_type)\ | |
853 | - bodies_by_type[sv_type].offset) | |
29489e7c | 854 | |
bd81e77b NC |
855 | #define del_body_type(p, sv_type) \ |
856 | del_body(p, &PL_body_roots[sv_type]) | |
29489e7c | 857 | |
29489e7c | 858 | |
bd81e77b NC |
859 | #define new_body_allocated(sv_type) \ |
860 | (void *)((char *)S_new_body(aTHX_ bodies_by_type[sv_type].size, sv_type)\ | |
861 | - bodies_by_type[sv_type].offset) | |
29489e7c | 862 | |
bd81e77b NC |
863 | #define del_body_allocated(p, sv_type) \ |
864 | del_body(p + bodies_by_type[sv_type].offset, &PL_body_roots[sv_type]) | |
29489e7c | 865 | |
29489e7c | 866 | |
bd81e77b NC |
867 | #define my_safemalloc(s) (void*)safemalloc(s) |
868 | #define my_safecalloc(s) (void*)safecalloc(s, 1) | |
869 | #define my_safefree(p) safefree((char*)p) | |
29489e7c | 870 | |
bd81e77b | 871 | #ifdef PURIFY |
29489e7c | 872 | |
bd81e77b NC |
873 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
874 | #define del_XNV(p) my_safefree(p) | |
29489e7c | 875 | |
bd81e77b NC |
876 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
877 | #define del_XPVNV(p) my_safefree(p) | |
29489e7c | 878 | |
bd81e77b NC |
879 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
880 | #define del_XPVAV(p) my_safefree(p) | |
29489e7c | 881 | |
bd81e77b NC |
882 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) |
883 | #define del_XPVHV(p) my_safefree(p) | |
29489e7c | 884 | |
bd81e77b NC |
885 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
886 | #define del_XPVMG(p) my_safefree(p) | |
29489e7c | 887 | |
bd81e77b NC |
888 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
889 | #define del_XPVGV(p) my_safefree(p) | |
29489e7c | 890 | |
bd81e77b | 891 | #else /* !PURIFY */ |
29489e7c | 892 | |
bd81e77b NC |
893 | #define new_XNV() new_body_type(SVt_NV) |
894 | #define del_XNV(p) del_body_type(p, SVt_NV) | |
29489e7c | 895 | |
bd81e77b NC |
896 | #define new_XPVNV() new_body_type(SVt_PVNV) |
897 | #define del_XPVNV(p) del_body_type(p, SVt_PVNV) | |
29489e7c | 898 | |
bd81e77b NC |
899 | #define new_XPVAV() new_body_allocated(SVt_PVAV) |
900 | #define del_XPVAV(p) del_body_allocated(p, SVt_PVAV) | |
645c22ef | 901 | |
bd81e77b NC |
902 | #define new_XPVHV() new_body_allocated(SVt_PVHV) |
903 | #define del_XPVHV(p) del_body_allocated(p, SVt_PVHV) | |
645c22ef | 904 | |
bd81e77b NC |
905 | #define new_XPVMG() new_body_type(SVt_PVMG) |
906 | #define del_XPVMG(p) del_body_type(p, SVt_PVMG) | |
645c22ef | 907 | |
bd81e77b NC |
908 | #define new_XPVGV() new_body_type(SVt_PVGV) |
909 | #define del_XPVGV(p) del_body_type(p, SVt_PVGV) | |
1d7c1841 | 910 | |
bd81e77b | 911 | #endif /* PURIFY */ |
93e68bfb | 912 | |
bd81e77b | 913 | /* no arena for you! */ |
93e68bfb | 914 | |
bd81e77b NC |
915 | #define new_NOARENA(details) \ |
916 | my_safemalloc((details)->size + (details)->offset) | |
917 | #define new_NOARENAZ(details) \ | |
918 | my_safecalloc((details)->size + (details)->offset) | |
93e68bfb | 919 | |
bd81e77b NC |
920 | /* |
921 | =for apidoc sv_upgrade | |
93e68bfb | 922 | |
bd81e77b NC |
923 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
924 | SV, then copies across as much information as possible from the old body. | |
925 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. | |
93e68bfb | 926 | |
bd81e77b | 927 | =cut |
93e68bfb | 928 | */ |
93e68bfb | 929 | |
bd81e77b NC |
930 | void |
931 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 new_type) | |
cac9b346 | 932 | { |
bd81e77b NC |
933 | void* old_body; |
934 | void* new_body; | |
935 | const U32 old_type = SvTYPE(sv); | |
936 | const struct body_details *const old_type_details | |
937 | = bodies_by_type + old_type; | |
938 | const struct body_details *new_type_details = bodies_by_type + new_type; | |
cac9b346 | 939 | |
bd81e77b NC |
940 | if (new_type != SVt_PV && SvIsCOW(sv)) { |
941 | sv_force_normal_flags(sv, 0); | |
942 | } | |
cac9b346 | 943 | |
bd81e77b NC |
944 | if (old_type == new_type) |
945 | return; | |
cac9b346 | 946 | |
bd81e77b NC |
947 | if (old_type > new_type) |
948 | Perl_croak(aTHX_ "sv_upgrade from type %d down to type %d", | |
949 | (int)old_type, (int)new_type); | |
cac9b346 | 950 | |
cac9b346 | 951 | |
bd81e77b | 952 | old_body = SvANY(sv); |
de042e1d | 953 | |
bd81e77b NC |
954 | /* Copying structures onto other structures that have been neatly zeroed |
955 | has a subtle gotcha. Consider XPVMG | |
cac9b346 | 956 | |
bd81e77b NC |
957 | +------+------+------+------+------+-------+-------+ |
958 | | NV | CUR | LEN | IV | MAGIC | STASH | | |
959 | +------+------+------+------+------+-------+-------+ | |
960 | 0 4 8 12 16 20 24 28 | |
645c22ef | 961 | |
bd81e77b NC |
962 | where NVs are aligned to 8 bytes, so that sizeof that structure is |
963 | actually 32 bytes long, with 4 bytes of padding at the end: | |
08742458 | 964 | |
bd81e77b NC |
965 | +------+------+------+------+------+-------+-------+------+ |
966 | | NV | CUR | LEN | IV | MAGIC | STASH | ??? | | |
967 | +------+------+------+------+------+-------+-------+------+ | |
968 | 0 4 8 12 16 20 24 28 32 | |
08742458 | 969 | |
bd81e77b | 970 | so what happens if you allocate memory for this structure: |
30f9da9e | 971 | |
bd81e77b NC |
972 | +------+------+------+------+------+-------+-------+------+------+... |
973 | | NV | CUR | LEN | IV | MAGIC | STASH | GP | NAME | | |
974 | +------+------+------+------+------+-------+-------+------+------+... | |
975 | 0 4 8 12 16 20 24 28 32 36 | |
bfc44f79 | 976 | |
bd81e77b NC |
977 | zero it, then copy sizeof(XPVMG) bytes on top of it? Not quite what you |
978 | expect, because you copy the area marked ??? onto GP. Now, ??? may have | |
979 | started out as zero once, but it's quite possible that it isn't. So now, | |
980 | rather than a nicely zeroed GP, you have it pointing somewhere random. | |
981 | Bugs ensue. | |
bfc44f79 | 982 | |
bd81e77b NC |
983 | (In fact, GP ends up pointing at a previous GP structure, because the |
984 | principle cause of the padding in XPVMG getting garbage is a copy of | |
985 | sizeof(XPVMG) bytes from a XPVGV structure in sv_unglob) | |
30f9da9e | 986 | |
bd81e77b NC |
987 | So we are careful and work out the size of used parts of all the |
988 | structures. */ | |
bfc44f79 | 989 | |
bd81e77b NC |
990 | switch (old_type) { |
991 | case SVt_NULL: | |
992 | break; | |
993 | case SVt_IV: | |
994 | if (new_type < SVt_PVIV) { | |
995 | new_type = (new_type == SVt_NV) | |
996 | ? SVt_PVNV : SVt_PVIV; | |
997 | new_type_details = bodies_by_type + new_type; | |
998 | } | |
999 | break; | |
1000 | case SVt_NV: | |
1001 | if (new_type < SVt_PVNV) { | |
1002 | new_type = SVt_PVNV; | |
1003 | new_type_details = bodies_by_type + new_type; | |
1004 | } | |
1005 | break; | |
1006 | case SVt_RV: | |
1007 | break; | |
1008 | case SVt_PV: | |
1009 | assert(new_type > SVt_PV); | |
1010 | assert(SVt_IV < SVt_PV); | |
1011 | assert(SVt_NV < SVt_PV); | |
1012 | break; | |
1013 | case SVt_PVIV: | |
1014 | break; | |
1015 | case SVt_PVNV: | |
1016 | break; | |
1017 | case SVt_PVMG: | |
1018 | /* Because the XPVMG of PL_mess_sv isn't allocated from the arena, | |
1019 | there's no way that it can be safely upgraded, because perl.c | |
1020 | expects to Safefree(SvANY(PL_mess_sv)) */ | |
1021 | assert(sv != PL_mess_sv); | |
1022 | /* This flag bit is used to mean other things in other scalar types. | |
1023 | Given that it only has meaning inside the pad, it shouldn't be set | |
1024 | on anything that can get upgraded. */ | |
1025 | assert((SvFLAGS(sv) & SVpad_TYPED) == 0); | |
1026 | break; | |
1027 | default: | |
1028 | if (old_type_details->cant_upgrade) | |
1029 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); | |
1030 | } | |
645c22ef | 1031 | |
bd81e77b NC |
1032 | SvFLAGS(sv) &= ~SVTYPEMASK; |
1033 | SvFLAGS(sv) |= new_type; | |
932e9ff9 | 1034 | |
bd81e77b NC |
1035 | switch (new_type) { |
1036 | case SVt_NULL: | |
1037 | Perl_croak(aTHX_ "Can't upgrade to undef"); | |
1038 | case SVt_IV: | |
1039 | assert(old_type == SVt_NULL); | |
1040 | SvANY(sv) = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); | |
1041 | SvIV_set(sv, 0); | |
1042 | return; | |
1043 | case SVt_NV: | |
1044 | assert(old_type == SVt_NULL); | |
1045 | SvANY(sv) = new_XNV(); | |
1046 | SvNV_set(sv, 0); | |
1047 | return; | |
1048 | case SVt_RV: | |
1049 | assert(old_type == SVt_NULL); | |
1050 | SvANY(sv) = &sv->sv_u.svu_rv; | |
1051 | SvRV_set(sv, 0); | |
1052 | return; | |
1053 | case SVt_PVHV: | |
1054 | SvANY(sv) = new_XPVHV(); | |
1055 | HvFILL(sv) = 0; | |
1056 | HvMAX(sv) = 0; | |
1057 | HvTOTALKEYS(sv) = 0; | |
645c22ef | 1058 | |
bd81e77b | 1059 | goto hv_av_common; |
aeb18a1e | 1060 | |
bd81e77b NC |
1061 | case SVt_PVAV: |
1062 | SvANY(sv) = new_XPVAV(); | |
1063 | AvMAX(sv) = -1; | |
1064 | AvFILLp(sv) = -1; | |
1065 | AvALLOC(sv) = 0; | |
1066 | AvREAL_only(sv); | |
aeb18a1e | 1067 | |
bd81e77b NC |
1068 | hv_av_common: |
1069 | /* SVt_NULL isn't the only thing upgraded to AV or HV. | |
1070 | The target created by newSVrv also is, and it can have magic. | |
1071 | However, it never has SvPVX set. | |
1072 | */ | |
1073 | if (old_type >= SVt_RV) { | |
1074 | assert(SvPVX_const(sv) == 0); | |
1075 | } | |
aeb18a1e | 1076 | |
bd81e77b NC |
1077 | /* Could put this in the else clause below, as PVMG must have SvPVX |
1078 | 0 already (the assertion above) */ | |
1079 | SvPV_set(sv, (char*)0); | |
93e68bfb | 1080 | |
bd81e77b NC |
1081 | if (old_type >= SVt_PVMG) { |
1082 | SvMAGIC_set(sv, ((XPVMG*)old_body)->xmg_magic); | |
1083 | SvSTASH_set(sv, ((XPVMG*)old_body)->xmg_stash); | |
1084 | } else { | |
1085 | SvMAGIC_set(sv, 0); | |
1086 | SvSTASH_set(sv, 0); | |
1087 | } | |
1088 | break; | |
93e68bfb | 1089 | |
93e68bfb | 1090 | |
bd81e77b NC |
1091 | case SVt_PVIV: |
1092 | /* XXX Is this still needed? Was it ever needed? Surely as there is | |
1093 | no route from NV to PVIV, NOK can never be true */ | |
1094 | assert(!SvNOKp(sv)); | |
1095 | assert(!SvNOK(sv)); | |
1096 | case SVt_PVIO: | |
1097 | case SVt_PVFM: | |
1098 | case SVt_PVBM: | |
1099 | case SVt_PVGV: | |
1100 | case SVt_PVCV: | |
1101 | case SVt_PVLV: | |
1102 | case SVt_PVMG: | |
1103 | case SVt_PVNV: | |
1104 | case SVt_PV: | |
93e68bfb | 1105 | |
bd81e77b NC |
1106 | assert(new_type_details->size); |
1107 | /* We always allocated the full length item with PURIFY. To do this | |
1108 | we fake things so that arena is false for all 16 types.. */ | |
1109 | if(new_type_details->arena) { | |
1110 | /* This points to the start of the allocated area. */ | |
1111 | new_body_inline(new_body, new_type_details->size, new_type); | |
1112 | Zero(new_body, new_type_details->size, char); | |
1113 | new_body = ((char *)new_body) - new_type_details->offset; | |
1114 | } else { | |
1115 | new_body = new_NOARENAZ(new_type_details); | |
1116 | } | |
1117 | SvANY(sv) = new_body; | |
5e2fc214 | 1118 | |
bd81e77b NC |
1119 | if (old_type_details->copy) { |
1120 | Copy((char *)old_body + old_type_details->offset, | |
1121 | (char *)new_body + old_type_details->offset, | |
1122 | old_type_details->copy, char); | |
1123 | } | |
1124 | ||
1125 | #ifndef NV_ZERO_IS_ALLBITS_ZERO | |
1126 | /* If NV 0.0 is store as all bits 0 then Zero() already creates a correct | |
1127 | 0.0 for us. */ | |
1128 | if (old_type_details->zero_nv) | |
1129 | SvNV_set(sv, 0); | |
82048762 | 1130 | #endif |
5e2fc214 | 1131 | |
bd81e77b NC |
1132 | if (new_type == SVt_PVIO) |
1133 | IoPAGE_LEN(sv) = 60; | |
1134 | if (old_type < SVt_RV) | |
1135 | SvPV_set(sv, 0); | |
1136 | break; | |
1137 | default: | |
1138 | Perl_croak(aTHX_ "panic: sv_upgrade to unknown type %lu", new_type); | |
1139 | } | |
73171d91 | 1140 | |
bd81e77b NC |
1141 | if (old_type_details->size) { |
1142 | /* If the old body had an allocated size, then we need to free it. */ | |
1143 | #ifdef PURIFY | |
1144 | my_safefree(old_body); | |
1145 | #else | |
1146 | del_body((void*)((char*)old_body + old_type_details->offset), | |
1147 | &PL_body_roots[old_type]); | |
1148 | #endif | |
1149 | } | |
1150 | } | |
73171d91 | 1151 | |
bd81e77b NC |
1152 | /* |
1153 | =for apidoc sv_backoff | |
73171d91 | 1154 | |
bd81e77b NC |
1155 | Remove any string offset. You should normally use the C<SvOOK_off> macro |
1156 | wrapper instead. | |
73171d91 | 1157 | |
bd81e77b | 1158 | =cut |
73171d91 NC |
1159 | */ |
1160 | ||
bd81e77b NC |
1161 | int |
1162 | Perl_sv_backoff(pTHX_ register SV *sv) | |
1163 | { | |
1164 | assert(SvOOK(sv)); | |
1165 | assert(SvTYPE(sv) != SVt_PVHV); | |
1166 | assert(SvTYPE(sv) != SVt_PVAV); | |
1167 | if (SvIVX(sv)) { | |
1168 | const char * const s = SvPVX_const(sv); | |
1169 | SvLEN_set(sv, SvLEN(sv) + SvIVX(sv)); | |
1170 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); | |
1171 | SvIV_set(sv, 0); | |
1172 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); | |
1173 | } | |
1174 | SvFLAGS(sv) &= ~SVf_OOK; | |
1175 | return 0; | |
1176 | } | |
73171d91 | 1177 | |
bd81e77b NC |
1178 | /* |
1179 | =for apidoc sv_grow | |
73171d91 | 1180 | |
bd81e77b NC |
1181 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
1182 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
1183 | Use the C<SvGROW> wrapper instead. | |
93e68bfb | 1184 | |
bd81e77b NC |
1185 | =cut |
1186 | */ | |
93e68bfb | 1187 | |
bd81e77b NC |
1188 | char * |
1189 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) | |
1190 | { | |
1191 | register char *s; | |
93e68bfb | 1192 | |
bd81e77b NC |
1193 | #ifdef HAS_64K_LIMIT |
1194 | if (newlen >= 0x10000) { | |
1195 | PerlIO_printf(Perl_debug_log, | |
1196 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
1197 | my_exit(1); | |
1198 | } | |
1199 | #endif /* HAS_64K_LIMIT */ | |
1200 | if (SvROK(sv)) | |
1201 | sv_unref(sv); | |
1202 | if (SvTYPE(sv) < SVt_PV) { | |
1203 | sv_upgrade(sv, SVt_PV); | |
1204 | s = SvPVX_mutable(sv); | |
1205 | } | |
1206 | else if (SvOOK(sv)) { /* pv is offset? */ | |
1207 | sv_backoff(sv); | |
1208 | s = SvPVX_mutable(sv); | |
1209 | if (newlen > SvLEN(sv)) | |
1210 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
1211 | #ifdef HAS_64K_LIMIT | |
1212 | if (newlen >= 0x10000) | |
1213 | newlen = 0xFFFF; | |
1214 | #endif | |
1215 | } | |
1216 | else | |
1217 | s = SvPVX_mutable(sv); | |
aeb18a1e | 1218 | |
bd81e77b NC |
1219 | if (newlen > SvLEN(sv)) { /* need more room? */ |
1220 | newlen = PERL_STRLEN_ROUNDUP(newlen); | |
1221 | if (SvLEN(sv) && s) { | |
1222 | #ifdef MYMALLOC | |
1223 | const STRLEN l = malloced_size((void*)SvPVX_const(sv)); | |
1224 | if (newlen <= l) { | |
1225 | SvLEN_set(sv, l); | |
1226 | return s; | |
1227 | } else | |
1228 | #endif | |
1229 | s = saferealloc(s, newlen); | |
1230 | } | |
1231 | else { | |
1232 | s = safemalloc(newlen); | |
1233 | if (SvPVX_const(sv) && SvCUR(sv)) { | |
1234 | Move(SvPVX_const(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); | |
1235 | } | |
1236 | } | |
1237 | SvPV_set(sv, s); | |
1238 | SvLEN_set(sv, newlen); | |
1239 | } | |
1240 | return s; | |
1241 | } | |
aeb18a1e | 1242 | |
bd81e77b NC |
1243 | /* |
1244 | =for apidoc sv_setiv | |
932e9ff9 | 1245 | |
bd81e77b NC |
1246 | Copies an integer into the given SV, upgrading first if necessary. |
1247 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
463ee0b2 | 1248 | |
bd81e77b NC |
1249 | =cut |
1250 | */ | |
463ee0b2 | 1251 | |
bd81e77b NC |
1252 | void |
1253 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) | |
1254 | { | |
1255 | SV_CHECK_THINKFIRST_COW_DROP(sv); | |
1256 | switch (SvTYPE(sv)) { | |
1257 | case SVt_NULL: | |
1258 | sv_upgrade(sv, SVt_IV); | |
1259 | break; | |
1260 | case SVt_NV: | |
1261 | sv_upgrade(sv, SVt_PVNV); | |
1262 | break; | |
1263 | case SVt_RV: | |
1264 | case SVt_PV: | |
1265 | sv_upgrade(sv, SVt_PVIV); | |
1266 | break; | |
463ee0b2 | 1267 | |
bd81e77b NC |
1268 | case SVt_PVGV: |
1269 | case SVt_PVAV: | |
1270 | case SVt_PVHV: | |
1271 | case SVt_PVCV: | |
1272 | case SVt_PVFM: | |
1273 | case SVt_PVIO: | |
1274 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), | |
1275 | OP_DESC(PL_op)); | |
1276 | } | |
1277 | (void)SvIOK_only(sv); /* validate number */ | |
1278 | SvIV_set(sv, i); | |
1279 | SvTAINT(sv); | |
1280 | } | |
932e9ff9 | 1281 | |
bd81e77b NC |
1282 | /* |
1283 | =for apidoc sv_setiv_mg | |
d33b2eba | 1284 | |
bd81e77b | 1285 | Like C<sv_setiv>, but also handles 'set' magic. |
1c846c1f | 1286 | |
bd81e77b NC |
1287 | =cut |
1288 | */ | |
d33b2eba | 1289 | |
bd81e77b NC |
1290 | void |
1291 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) | |
1292 | { | |
1293 | sv_setiv(sv,i); | |
1294 | SvSETMAGIC(sv); | |
1295 | } | |
727879eb | 1296 | |
bd81e77b NC |
1297 | /* |
1298 | =for apidoc sv_setuv | |
d33b2eba | 1299 | |
bd81e77b NC |
1300 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
1301 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
9b94d1dd | 1302 | |
bd81e77b NC |
1303 | =cut |
1304 | */ | |
d33b2eba | 1305 | |
bd81e77b NC |
1306 | void |
1307 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) | |
1308 | { | |
1309 | /* With these two if statements: | |
1310 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d33b2eba | 1311 | |
bd81e77b NC |
1312 | without |
1313 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
1c846c1f | 1314 | |
bd81e77b NC |
1315 | If you wish to remove them, please benchmark to see what the effect is |
1316 | */ | |
1317 | if (u <= (UV)IV_MAX) { | |
1318 | sv_setiv(sv, (IV)u); | |
1319 | return; | |
1320 | } | |
1321 | sv_setiv(sv, 0); | |
1322 | SvIsUV_on(sv); | |
1323 | SvUV_set(sv, u); | |
1324 | } | |
d33b2eba | 1325 | |
bd81e77b NC |
1326 | /* |
1327 | =for apidoc sv_setuv_mg | |
727879eb | 1328 | |
bd81e77b | 1329 | Like C<sv_setuv>, but also handles 'set' magic. |
9b94d1dd | 1330 | |
bd81e77b NC |
1331 | =cut |
1332 | */ | |
5e2fc214 | 1333 | |
bd81e77b NC |
1334 | void |
1335 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) | |
1336 | { | |
1337 | sv_setiv(sv, 0); | |
1338 | SvIsUV_on(sv); | |
1339 | sv_setuv(sv,u); | |
1340 | SvSETMAGIC(sv); | |
1341 | } | |
5e2fc214 | 1342 | |
954c1994 | 1343 | /* |
bd81e77b | 1344 | =for apidoc sv_setnv |
954c1994 | 1345 | |
bd81e77b NC |
1346 | Copies a double into the given SV, upgrading first if necessary. |
1347 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
1348 | |
1349 | =cut | |
1350 | */ | |
1351 | ||
63f97190 | 1352 | void |
bd81e77b | 1353 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 1354 | { |
bd81e77b NC |
1355 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
1356 | switch (SvTYPE(sv)) { | |
79072805 | 1357 | case SVt_NULL: |
79072805 | 1358 | case SVt_IV: |
bd81e77b | 1359 | sv_upgrade(sv, SVt_NV); |
79072805 | 1360 | break; |
ed6116ce | 1361 | case SVt_RV: |
79072805 | 1362 | case SVt_PV: |
79072805 | 1363 | case SVt_PVIV: |
bd81e77b | 1364 | sv_upgrade(sv, SVt_PVNV); |
79072805 | 1365 | break; |
bd4b1eb5 | 1366 | |
bd4b1eb5 | 1367 | case SVt_PVGV: |
bd81e77b NC |
1368 | case SVt_PVAV: |
1369 | case SVt_PVHV: | |
79072805 | 1370 | case SVt_PVCV: |
bd81e77b NC |
1371 | case SVt_PVFM: |
1372 | case SVt_PVIO: | |
1373 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), | |
1374 | OP_NAME(PL_op)); | |
2068cd4d | 1375 | } |
bd81e77b NC |
1376 | SvNV_set(sv, num); |
1377 | (void)SvNOK_only(sv); /* validate number */ | |
1378 | SvTAINT(sv); | |
79072805 LW |
1379 | } |
1380 | ||
645c22ef | 1381 | /* |
bd81e77b | 1382 | =for apidoc sv_setnv_mg |
645c22ef | 1383 | |
bd81e77b | 1384 | Like C<sv_setnv>, but also handles 'set' magic. |
645c22ef DM |
1385 | |
1386 | =cut | |
1387 | */ | |
1388 | ||
bd81e77b NC |
1389 | void |
1390 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) | |
79072805 | 1391 | { |
bd81e77b NC |
1392 | sv_setnv(sv,num); |
1393 | SvSETMAGIC(sv); | |
79072805 LW |
1394 | } |
1395 | ||
bd81e77b NC |
1396 | /* Print an "isn't numeric" warning, using a cleaned-up, |
1397 | * printable version of the offending string | |
1398 | */ | |
954c1994 | 1399 | |
bd81e77b NC |
1400 | STATIC void |
1401 | S_not_a_number(pTHX_ SV *sv) | |
79072805 | 1402 | { |
bd81e77b NC |
1403 | SV *dsv; |
1404 | char tmpbuf[64]; | |
1405 | const char *pv; | |
94463019 JH |
1406 | |
1407 | if (DO_UTF8(sv)) { | |
d0043bd1 | 1408 | dsv = sv_2mortal(newSVpvn("", 0)); |
94463019 JH |
1409 | pv = sv_uni_display(dsv, sv, 10, 0); |
1410 | } else { | |
1411 | char *d = tmpbuf; | |
551405c4 | 1412 | const char * const limit = tmpbuf + sizeof(tmpbuf) - 8; |
94463019 JH |
1413 | /* each *s can expand to 4 chars + "...\0", |
1414 | i.e. need room for 8 chars */ | |
ecdeb87c | 1415 | |
00b6aa41 AL |
1416 | const char *s = SvPVX_const(sv); |
1417 | const char * const end = s + SvCUR(sv); | |
1418 | for ( ; s < end && d < limit; s++ ) { | |
94463019 JH |
1419 | int ch = *s & 0xFF; |
1420 | if (ch & 128 && !isPRINT_LC(ch)) { | |
1421 | *d++ = 'M'; | |
1422 | *d++ = '-'; | |
1423 | ch &= 127; | |
1424 | } | |
1425 | if (ch == '\n') { | |
1426 | *d++ = '\\'; | |
1427 | *d++ = 'n'; | |
1428 | } | |
1429 | else if (ch == '\r') { | |
1430 | *d++ = '\\'; | |
1431 | *d++ = 'r'; | |
1432 | } | |
1433 | else if (ch == '\f') { | |
1434 | *d++ = '\\'; | |
1435 | *d++ = 'f'; | |
1436 | } | |
1437 | else if (ch == '\\') { | |
1438 | *d++ = '\\'; | |
1439 | *d++ = '\\'; | |
1440 | } | |
1441 | else if (ch == '\0') { | |
1442 | *d++ = '\\'; | |
1443 | *d++ = '0'; | |
1444 | } | |
1445 | else if (isPRINT_LC(ch)) | |
1446 | *d++ = ch; | |
1447 | else { | |
1448 | *d++ = '^'; | |
1449 | *d++ = toCTRL(ch); | |
1450 | } | |
1451 | } | |
1452 | if (s < end) { | |
1453 | *d++ = '.'; | |
1454 | *d++ = '.'; | |
1455 | *d++ = '.'; | |
1456 | } | |
1457 | *d = '\0'; | |
1458 | pv = tmpbuf; | |
a0d0e21e | 1459 | } |
a0d0e21e | 1460 | |
533c011a | 1461 | if (PL_op) |
9014280d | 1462 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
1463 | "Argument \"%s\" isn't numeric in %s", pv, |
1464 | OP_DESC(PL_op)); | |
a0d0e21e | 1465 | else |
9014280d | 1466 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 1467 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
1468 | } |
1469 | ||
c2988b20 NC |
1470 | /* |
1471 | =for apidoc looks_like_number | |
1472 | ||
645c22ef DM |
1473 | Test if the content of an SV looks like a number (or is a number). |
1474 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
1475 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
1476 | |
1477 | =cut | |
1478 | */ | |
1479 | ||
1480 | I32 | |
1481 | Perl_looks_like_number(pTHX_ SV *sv) | |
1482 | { | |
a3b680e6 | 1483 | register const char *sbegin; |
c2988b20 NC |
1484 | STRLEN len; |
1485 | ||
1486 | if (SvPOK(sv)) { | |
3f7c398e | 1487 | sbegin = SvPVX_const(sv); |
c2988b20 NC |
1488 | len = SvCUR(sv); |
1489 | } | |
1490 | else if (SvPOKp(sv)) | |
83003860 | 1491 | sbegin = SvPV_const(sv, len); |
c2988b20 | 1492 | else |
e0ab1c0e | 1493 | return SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK); |
c2988b20 NC |
1494 | return grok_number(sbegin, len, NULL); |
1495 | } | |
25da4f38 IZ |
1496 | |
1497 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
1498 | until proven guilty, assume that things are not that bad... */ | |
1499 | ||
645c22ef DM |
1500 | /* |
1501 | NV_PRESERVES_UV: | |
1502 | ||
1503 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
1504 | an IV (an assumption perl has been based on to date) it becomes necessary |
1505 | to remove the assumption that the NV always carries enough precision to | |
1506 | recreate the IV whenever needed, and that the NV is the canonical form. | |
1507 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 1508 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
1509 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
1510 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
1511 | conversion where precision was lost and IV/UV/NV slots that have a | |
1512 | valid conversion which has lost no precision | |
645c22ef | 1513 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
1514 | would lose precision, the precise conversion (or differently |
1515 | imprecise conversion) is also performed and cached, to prevent | |
1516 | requests for different numeric formats on the same SV causing | |
1517 | lossy conversion chains. (lossless conversion chains are perfectly | |
1518 | acceptable (still)) | |
1519 | ||
1520 | ||
1521 | flags are used: | |
1522 | SvIOKp is true if the IV slot contains a valid value | |
1523 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
1524 | SvNOKp is true if the NV slot contains a valid value | |
1525 | SvNOK is true only if the NV value is accurate | |
1526 | ||
1527 | so | |
645c22ef | 1528 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
1529 | IV(or UV) would lose accuracy over a direct conversion from PV to |
1530 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
1531 | SV as IOK NOKp (ie not NOK). | |
1532 | ||
645c22ef | 1533 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
1534 | NV would lose accuracy over a direct conversion from PV to NV. If it |
1535 | would, cache both conversions, flag similarly. | |
1536 | ||
1537 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
1538 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
1539 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
1540 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 1541 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 1542 | |
645c22ef DM |
1543 | The benefit of this is that operations such as pp_add know that if |
1544 | SvIOK is true for both left and right operands, then integer addition | |
1545 | can be used instead of floating point (for cases where the result won't | |
1546 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
1547 | loss of precision compared with integer addition. |
1548 | ||
1549 | * making IV and NV equal status should make maths accurate on 64 bit | |
1550 | platforms | |
1551 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 1552 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
1553 | looking for SvIOK and checking for overflow will not outweigh the |
1554 | fp to integer speedup) | |
1555 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
1556 | values, as the change from SvIOK to SvIOKp will cause a call into | |
1557 | sv_2iv each time rather than a macro access direct to the IV slot | |
1558 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 1559 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
1560 | |
1561 | #################################################################### | |
645c22ef DM |
1562 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
1563 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
1564 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
1565 | #################################################################### |
1566 | ||
645c22ef | 1567 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
1568 | performance ratio. |
1569 | */ | |
1570 | ||
1571 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
1572 | # define IS_NUMBER_UNDERFLOW_IV 1 |
1573 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
1574 | # define IS_NUMBER_IV_AND_UV 2 | |
1575 | # define IS_NUMBER_OVERFLOW_IV 4 | |
1576 | # define IS_NUMBER_OVERFLOW_UV 5 | |
1577 | ||
1578 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
1579 | |
1580 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
1581 | STATIC int | |
645c22ef | 1582 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 1583 | { |
3f7c398e | 1584 | 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 |
1585 | if (SvNVX(sv) < (NV)IV_MIN) { |
1586 | (void)SvIOKp_on(sv); | |
1587 | (void)SvNOK_on(sv); | |
45977657 | 1588 | SvIV_set(sv, IV_MIN); |
28e5dec8 JH |
1589 | return IS_NUMBER_UNDERFLOW_IV; |
1590 | } | |
1591 | if (SvNVX(sv) > (NV)UV_MAX) { | |
1592 | (void)SvIOKp_on(sv); | |
1593 | (void)SvNOK_on(sv); | |
1594 | SvIsUV_on(sv); | |
607fa7f2 | 1595 | SvUV_set(sv, UV_MAX); |
28e5dec8 JH |
1596 | return IS_NUMBER_OVERFLOW_UV; |
1597 | } | |
c2988b20 NC |
1598 | (void)SvIOKp_on(sv); |
1599 | (void)SvNOK_on(sv); | |
1600 | /* Can't use strtol etc to convert this string. (See truth table in | |
1601 | sv_2iv */ | |
1602 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
45977657 | 1603 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
1604 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
1605 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
1606 | } else { | |
1607 | /* Integer is imprecise. NOK, IOKp */ | |
1608 | } | |
1609 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
1610 | } | |
1611 | SvIsUV_on(sv); | |
607fa7f2 | 1612 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
1613 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { |
1614 | if (SvUVX(sv) == UV_MAX) { | |
1615 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
1616 | possibly be preserved by NV. Hence, it must be overflow. | |
1617 | NOK, IOKp */ | |
1618 | return IS_NUMBER_OVERFLOW_UV; | |
1619 | } | |
1620 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
1621 | } else { | |
1622 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 1623 | } |
c2988b20 | 1624 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 1625 | } |
645c22ef DM |
1626 | #endif /* !NV_PRESERVES_UV*/ |
1627 | ||
af359546 NC |
1628 | STATIC bool |
1629 | S_sv_2iuv_common(pTHX_ SV *sv) { | |
1630 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
1631 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
1632 | * without also getting a cached IV/UV from it at the same time | |
1633 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
af359546 NC |
1634 | * IV or UV at same time to avoid this. */ |
1635 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
25da4f38 IZ |
1636 | |
1637 | if (SvTYPE(sv) == SVt_NV) | |
1638 | sv_upgrade(sv, SVt_PVNV); | |
1639 | ||
28e5dec8 JH |
1640 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
1641 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
1642 | certainly cast into the IV range at IV_MAX, whereas the correct | |
1643 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
1644 | cases go to UV */ | |
1645 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 1646 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
1647 | if (SvNVX(sv) == (NV) SvIVX(sv) |
1648 | #ifndef NV_PRESERVES_UV | |
1649 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
1650 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
1651 | /* Don't flag it as "accurately an integer" if the number | |
1652 | came from a (by definition imprecise) NV operation, and | |
1653 | we're outside the range of NV integer precision */ | |
1654 | #endif | |
1655 | ) { | |
1656 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
1657 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 1658 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
1659 | PTR2UV(sv), |
1660 | SvNVX(sv), | |
1661 | SvIVX(sv))); | |
1662 | ||
1663 | } else { | |
1664 | /* IV not precise. No need to convert from PV, as NV | |
1665 | conversion would already have cached IV if it detected | |
1666 | that PV->IV would be better than PV->NV->IV | |
1667 | flags already correct - don't set public IOK. */ | |
1668 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 1669 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
1670 | PTR2UV(sv), |
1671 | SvNVX(sv), | |
1672 | SvIVX(sv))); | |
1673 | } | |
1674 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
1675 | but the cast (NV)IV_MIN rounds to a the value less (more | |
1676 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
1677 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
1678 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
1679 | (NV)UVX == NVX are both true, but the values differ. :-( | |
1680 | Hopefully for 2s complement IV_MIN is something like | |
1681 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 1682 | } |
25da4f38 | 1683 | else { |
607fa7f2 | 1684 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
1685 | if ( |
1686 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
1687 | #ifndef NV_PRESERVES_UV | |
1688 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
1689 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
1690 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
1691 | /* Don't flag it as "accurately an integer" if the number | |
1692 | came from a (by definition imprecise) NV operation, and | |
1693 | we're outside the range of NV integer precision */ | |
1694 | #endif | |
1695 | ) | |
1696 | SvIOK_on(sv); | |
25da4f38 | 1697 | SvIsUV_on(sv); |
1c846c1f | 1698 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 1699 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 1700 | PTR2UV(sv), |
57def98f JH |
1701 | SvUVX(sv), |
1702 | SvUVX(sv))); | |
25da4f38 | 1703 | } |
748a9306 LW |
1704 | } |
1705 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 1706 | UV value; |
504618e9 | 1707 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
af359546 | 1708 | /* We want to avoid a possible problem when we cache an IV/ a UV which |
25da4f38 | 1709 | may be later translated to an NV, and the resulting NV is not |
c2988b20 NC |
1710 | the same as the direct translation of the initial string |
1711 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
1712 | be careful to ensure that the value with the .456 is around if the | |
1713 | NV value is requested in the future). | |
1c846c1f | 1714 | |
af359546 | 1715 | This means that if we cache such an IV/a UV, we need to cache the |
25da4f38 | 1716 | NV as well. Moreover, we trade speed for space, and do not |
28e5dec8 | 1717 | cache the NV if we are sure it's not needed. |
25da4f38 | 1718 | */ |
16b7a9a4 | 1719 | |
c2988b20 NC |
1720 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
1721 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
1722 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 1723 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
1724 | if (SvTYPE(sv) < SVt_PVIV) |
1725 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 1726 | (void)SvIOK_on(sv); |
c2988b20 NC |
1727 | } else if (SvTYPE(sv) < SVt_PVNV) |
1728 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 1729 | |
c2988b20 NC |
1730 | /* If NV preserves UV then we only use the UV value if we know that |
1731 | we aren't going to call atof() below. If NVs don't preserve UVs | |
1732 | then the value returned may have more precision than atof() will | |
1733 | return, even though value isn't perfectly accurate. */ | |
1734 | if ((numtype & (IS_NUMBER_IN_UV | |
1735 | #ifdef NV_PRESERVES_UV | |
1736 | | IS_NUMBER_NOT_INT | |
1737 | #endif | |
1738 | )) == IS_NUMBER_IN_UV) { | |
1739 | /* This won't turn off the public IOK flag if it was set above */ | |
1740 | (void)SvIOKp_on(sv); | |
1741 | ||
1742 | if (!(numtype & IS_NUMBER_NEG)) { | |
1743 | /* positive */; | |
1744 | if (value <= (UV)IV_MAX) { | |
45977657 | 1745 | SvIV_set(sv, (IV)value); |
c2988b20 | 1746 | } else { |
af359546 | 1747 | /* it didn't overflow, and it was positive. */ |
607fa7f2 | 1748 | SvUV_set(sv, value); |
c2988b20 NC |
1749 | SvIsUV_on(sv); |
1750 | } | |
1751 | } else { | |
1752 | /* 2s complement assumption */ | |
1753 | if (value <= (UV)IV_MIN) { | |
45977657 | 1754 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
1755 | } else { |
1756 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 1757 | I'm assuming it will be rare. */ |
c2988b20 NC |
1758 | if (SvTYPE(sv) < SVt_PVNV) |
1759 | sv_upgrade(sv, SVt_PVNV); | |
1760 | SvNOK_on(sv); | |
1761 | SvIOK_off(sv); | |
1762 | SvIOKp_on(sv); | |
9d6ce603 | 1763 | SvNV_set(sv, -(NV)value); |
45977657 | 1764 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
1765 | } |
1766 | } | |
1767 | } | |
1768 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
1769 | will be in the previous block to set the IV slot, and the next | |
1770 | block to set the NV slot. So no else here. */ | |
1771 | ||
1772 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
1773 | != IS_NUMBER_IN_UV) { | |
1774 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
3f7c398e | 1775 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 | 1776 | |
c2988b20 NC |
1777 | if (! numtype && ckWARN(WARN_NUMERIC)) |
1778 | not_a_number(sv); | |
28e5dec8 | 1779 | |
65202027 | 1780 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
1781 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
1782 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 1783 | #else |
1779d84d | 1784 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 1785 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 1786 | #endif |
28e5dec8 | 1787 | |
28e5dec8 | 1788 | #ifdef NV_PRESERVES_UV |
af359546 NC |
1789 | (void)SvIOKp_on(sv); |
1790 | (void)SvNOK_on(sv); | |
1791 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
1792 | SvIV_set(sv, I_V(SvNVX(sv))); | |
1793 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
1794 | SvIOK_on(sv); | |
1795 | } else { | |
1796 | /* Integer is imprecise. NOK, IOKp */ | |
1797 | } | |
1798 | /* UV will not work better than IV */ | |
1799 | } else { | |
1800 | if (SvNVX(sv) > (NV)UV_MAX) { | |
1801 | SvIsUV_on(sv); | |
1802 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
1803 | SvUV_set(sv, UV_MAX); | |
af359546 NC |
1804 | } else { |
1805 | SvUV_set(sv, U_V(SvNVX(sv))); | |
1806 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs | |
1807 | NV preservse UV so can do correct comparison. */ | |
1808 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
1809 | SvIOK_on(sv); | |
af359546 NC |
1810 | } else { |
1811 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
af359546 NC |
1812 | } |
1813 | } | |
4b0c9573 | 1814 | SvIsUV_on(sv); |
af359546 | 1815 | } |
28e5dec8 | 1816 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
1817 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
1818 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
af359546 | 1819 | /* The IV/UV slot will have been set from value returned by |
c2988b20 NC |
1820 | grok_number above. The NV slot has just been set using |
1821 | Atof. */ | |
560b0c46 | 1822 | SvNOK_on(sv); |
c2988b20 NC |
1823 | assert (SvIOKp(sv)); |
1824 | } else { | |
1825 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
1826 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
1827 | /* Small enough to preserve all bits. */ | |
1828 | (void)SvIOKp_on(sv); | |
1829 | SvNOK_on(sv); | |
45977657 | 1830 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
1831 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
1832 | SvIOK_on(sv); | |
1833 | /* Assumption: first non-preserved integer is < IV_MAX, | |
1834 | this NV is in the preserved range, therefore: */ | |
1835 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
1836 | < (UV)IV_MAX)) { | |
32fdb065 | 1837 | 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 |
1838 | } |
1839 | } else { | |
1840 | /* IN_UV NOT_INT | |
1841 | 0 0 already failed to read UV. | |
1842 | 0 1 already failed to read UV. | |
1843 | 1 0 you won't get here in this case. IV/UV | |
1844 | slot set, public IOK, Atof() unneeded. | |
1845 | 1 1 already read UV. | |
1846 | so there's no point in sv_2iuv_non_preserve() attempting | |
1847 | to use atol, strtol, strtoul etc. */ | |
40a17c4c | 1848 | sv_2iuv_non_preserve (sv, numtype); |
c2988b20 NC |
1849 | } |
1850 | } | |
28e5dec8 | 1851 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 1852 | } |
af359546 NC |
1853 | } |
1854 | else { | |
1855 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { | |
1856 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) | |
1857 | report_uninit(sv); | |
1858 | } | |
25da4f38 IZ |
1859 | if (SvTYPE(sv) < SVt_IV) |
1860 | /* Typically the caller expects that sv_any is not NULL now. */ | |
1861 | sv_upgrade(sv, SVt_IV); | |
af359546 NC |
1862 | /* Return 0 from the caller. */ |
1863 | return TRUE; | |
1864 | } | |
1865 | return FALSE; | |
1866 | } | |
1867 | ||
1868 | /* | |
1869 | =for apidoc sv_2iv_flags | |
1870 | ||
1871 | Return the integer value of an SV, doing any necessary string | |
1872 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. | |
1873 | Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
1874 | ||
1875 | =cut | |
1876 | */ | |
1877 | ||
1878 | IV | |
1879 | Perl_sv_2iv_flags(pTHX_ register SV *sv, I32 flags) | |
1880 | { | |
1881 | if (!sv) | |
a0d0e21e | 1882 | return 0; |
af359546 NC |
1883 | if (SvGMAGICAL(sv)) { |
1884 | if (flags & SV_GMAGIC) | |
1885 | mg_get(sv); | |
1886 | if (SvIOKp(sv)) | |
1887 | return SvIVX(sv); | |
1888 | if (SvNOKp(sv)) { | |
1889 | return I_V(SvNVX(sv)); | |
1890 | } | |
1891 | if (SvPOKp(sv) && SvLEN(sv)) | |
1892 | return asIV(sv); | |
1893 | if (!SvROK(sv)) { | |
1894 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { | |
1895 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) | |
1896 | report_uninit(sv); | |
1897 | } | |
1898 | return 0; | |
1899 | } | |
1900 | } | |
1901 | if (SvTHINKFIRST(sv)) { | |
1902 | if (SvROK(sv)) { | |
1903 | if (SvAMAGIC(sv)) { | |
1904 | SV * const tmpstr=AMG_CALLun(sv,numer); | |
1905 | if (tmpstr && (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { | |
1906 | return SvIV(tmpstr); | |
1907 | } | |
1908 | } | |
1909 | return PTR2IV(SvRV(sv)); | |
1910 | } | |
1911 | if (SvIsCOW(sv)) { | |
1912 | sv_force_normal_flags(sv, 0); | |
1913 | } | |
1914 | if (SvREADONLY(sv) && !SvOK(sv)) { | |
1915 | if (ckWARN(WARN_UNINITIALIZED)) | |
1916 | report_uninit(sv); | |
1917 | return 0; | |
1918 | } | |
1919 | } | |
1920 | if (!SvIOKp(sv)) { | |
1921 | if (S_sv_2iuv_common(aTHX_ sv)) | |
1922 | return 0; | |
79072805 | 1923 | } |
1d7c1841 GS |
1924 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
1925 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 1926 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
1927 | } |
1928 | ||
645c22ef | 1929 | /* |
891f9566 | 1930 | =for apidoc sv_2uv_flags |
645c22ef DM |
1931 | |
1932 | Return the unsigned integer value of an SV, doing any necessary string | |
891f9566 YST |
1933 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. |
1934 | Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros. | |
645c22ef DM |
1935 | |
1936 | =cut | |
1937 | */ | |
1938 | ||
ff68c719 | 1939 | UV |
891f9566 | 1940 | Perl_sv_2uv_flags(pTHX_ register SV *sv, I32 flags) |
ff68c719 | 1941 | { |
1942 | if (!sv) | |
1943 | return 0; | |
1944 | if (SvGMAGICAL(sv)) { | |
891f9566 YST |
1945 | if (flags & SV_GMAGIC) |
1946 | mg_get(sv); | |
ff68c719 | 1947 | if (SvIOKp(sv)) |
1948 | return SvUVX(sv); | |
1949 | if (SvNOKp(sv)) | |
1950 | return U_V(SvNVX(sv)); | |
36477c24 | 1951 | if (SvPOKp(sv) && SvLEN(sv)) |
1952 | return asUV(sv); | |
3fe9a6f1 | 1953 | if (!SvROK(sv)) { |
d008e5eb | 1954 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
041457d9 | 1955 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 1956 | report_uninit(sv); |
c6ee37c5 | 1957 | } |
36477c24 | 1958 | return 0; |
3fe9a6f1 | 1959 | } |
ff68c719 | 1960 | } |
1961 | if (SvTHINKFIRST(sv)) { | |
1962 | if (SvROK(sv)) { | |
ff68c719 | 1963 | SV* tmpstr; |
1554e226 | 1964 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 1965 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 1966 | return SvUV(tmpstr); |
56431972 | 1967 | return PTR2UV(SvRV(sv)); |
ff68c719 | 1968 | } |
765f542d NC |
1969 | if (SvIsCOW(sv)) { |
1970 | sv_force_normal_flags(sv, 0); | |
8a818333 | 1971 | } |
0336b60e | 1972 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 1973 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 1974 | report_uninit(sv); |
ff68c719 | 1975 | return 0; |
1976 | } | |
1977 | } | |
af359546 NC |
1978 | if (!SvIOKp(sv)) { |
1979 | if (S_sv_2iuv_common(aTHX_ sv)) | |
1980 | return 0; | |
ff68c719 | 1981 | } |
25da4f38 | 1982 | |
1d7c1841 GS |
1983 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
1984 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 1985 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 1986 | } |
1987 | ||
645c22ef DM |
1988 | /* |
1989 | =for apidoc sv_2nv | |
1990 | ||
1991 | Return the num value of an SV, doing any necessary string or integer | |
1992 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
1993 | macros. | |
1994 | ||
1995 | =cut | |
1996 | */ | |
1997 | ||
65202027 | 1998 | NV |
864dbfa3 | 1999 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
2000 | { |
2001 | if (!sv) | |
2002 | return 0.0; | |
8990e307 | 2003 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
2004 | mg_get(sv); |
2005 | if (SvNOKp(sv)) | |
2006 | return SvNVX(sv); | |
a0d0e21e | 2007 | if (SvPOKp(sv) && SvLEN(sv)) { |
041457d9 | 2008 | if (!SvIOKp(sv) && ckWARN(WARN_NUMERIC) && |
504618e9 | 2009 | !grok_number(SvPVX_const(sv), SvCUR(sv), NULL)) |
a0d0e21e | 2010 | not_a_number(sv); |
3f7c398e | 2011 | return Atof(SvPVX_const(sv)); |
a0d0e21e | 2012 | } |
25da4f38 | 2013 | if (SvIOKp(sv)) { |
1c846c1f | 2014 | if (SvIsUV(sv)) |
65202027 | 2015 | return (NV)SvUVX(sv); |
25da4f38 | 2016 | else |
65202027 | 2017 | return (NV)SvIVX(sv); |
25da4f38 | 2018 | } |
16d20bd9 | 2019 | if (!SvROK(sv)) { |
d008e5eb | 2020 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
041457d9 | 2021 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2022 | report_uninit(sv); |
c6ee37c5 | 2023 | } |
66a1b24b | 2024 | return (NV)0; |
16d20bd9 | 2025 | } |
463ee0b2 | 2026 | } |
ed6116ce | 2027 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2028 | if (SvROK(sv)) { |
a0d0e21e | 2029 | SV* tmpstr; |
1554e226 | 2030 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2031 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2032 | return SvNV(tmpstr); |
56431972 | 2033 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 2034 | } |
765f542d NC |
2035 | if (SvIsCOW(sv)) { |
2036 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2037 | } |
0336b60e | 2038 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 2039 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2040 | report_uninit(sv); |
ed6116ce LW |
2041 | return 0.0; |
2042 | } | |
79072805 LW |
2043 | } |
2044 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
2045 | if (SvTYPE(sv) == SVt_IV) |
2046 | sv_upgrade(sv, SVt_PVNV); | |
2047 | else | |
2048 | sv_upgrade(sv, SVt_NV); | |
906f284f | 2049 | #ifdef USE_LONG_DOUBLE |
097ee67d | 2050 | DEBUG_c({ |
f93f4e46 | 2051 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2052 | PerlIO_printf(Perl_debug_log, |
2053 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
2054 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2055 | RESTORE_NUMERIC_LOCAL(); |
2056 | }); | |
65202027 | 2057 | #else |
572bbb43 | 2058 | DEBUG_c({ |
f93f4e46 | 2059 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2060 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 2061 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2062 | RESTORE_NUMERIC_LOCAL(); |
2063 | }); | |
572bbb43 | 2064 | #endif |
79072805 LW |
2065 | } |
2066 | else if (SvTYPE(sv) < SVt_PVNV) | |
2067 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
2068 | if (SvNOKp(sv)) { |
2069 | return SvNVX(sv); | |
61604483 | 2070 | } |
59d8ce62 | 2071 | if (SvIOKp(sv)) { |
9d6ce603 | 2072 | SvNV_set(sv, SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv)); |
28e5dec8 JH |
2073 | #ifdef NV_PRESERVES_UV |
2074 | SvNOK_on(sv); | |
2075 | #else | |
2076 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
2077 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
2078 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
2079 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
2080 | SvNOK_on(sv); | |
2081 | else | |
2082 | SvNOKp_on(sv); | |
2083 | #endif | |
93a17b20 | 2084 | } |
748a9306 | 2085 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 2086 | UV value; |
3f7c398e | 2087 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
041457d9 | 2088 | if (!SvIOKp(sv) && !numtype && ckWARN(WARN_NUMERIC)) |
a0d0e21e | 2089 | not_a_number(sv); |
28e5dec8 | 2090 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
2091 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2092 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2093 | /* It's definitely an integer */ |
9d6ce603 | 2094 | SvNV_set(sv, (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value); |
c2988b20 | 2095 | } else |
3f7c398e | 2096 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2097 | SvNOK_on(sv); |
2098 | #else | |
3f7c398e | 2099 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2100 | /* Only set the public NV OK flag if this NV preserves the value in |
2101 | the PV at least as well as an IV/UV would. | |
2102 | Not sure how to do this 100% reliably. */ | |
2103 | /* if that shift count is out of range then Configure's test is | |
2104 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
2105 | UV_BITS */ | |
2106 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 2107 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 2108 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
2109 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
2110 | /* Can't use strtol etc to convert this string, so don't try. | |
2111 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
2112 | SvNOK_on(sv); | |
2113 | } else { | |
2114 | /* value has been set. It may not be precise. */ | |
2115 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
2116 | /* 2s complement assumption for (UV)IV_MIN */ | |
2117 | SvNOK_on(sv); /* Integer is too negative. */ | |
2118 | } else { | |
2119 | SvNOKp_on(sv); | |
2120 | SvIOKp_on(sv); | |
6fa402ec | 2121 | |
c2988b20 | 2122 | if (numtype & IS_NUMBER_NEG) { |
45977657 | 2123 | SvIV_set(sv, -(IV)value); |
c2988b20 | 2124 | } else if (value <= (UV)IV_MAX) { |
45977657 | 2125 | SvIV_set(sv, (IV)value); |
c2988b20 | 2126 | } else { |
607fa7f2 | 2127 | SvUV_set(sv, value); |
c2988b20 NC |
2128 | SvIsUV_on(sv); |
2129 | } | |
2130 | ||
2131 | if (numtype & IS_NUMBER_NOT_INT) { | |
2132 | /* I believe that even if the original PV had decimals, | |
2133 | they are lost beyond the limit of the FP precision. | |
2134 | However, neither is canonical, so both only get p | |
2135 | flags. NWC, 2000/11/25 */ | |
2136 | /* Both already have p flags, so do nothing */ | |
2137 | } else { | |
66a1b24b | 2138 | const NV nv = SvNVX(sv); |
c2988b20 NC |
2139 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { |
2140 | if (SvIVX(sv) == I_V(nv)) { | |
2141 | SvNOK_on(sv); | |
c2988b20 | 2142 | } else { |
c2988b20 NC |
2143 | /* It had no "." so it must be integer. */ |
2144 | } | |
00b6aa41 | 2145 | SvIOK_on(sv); |
c2988b20 NC |
2146 | } else { |
2147 | /* between IV_MAX and NV(UV_MAX). | |
2148 | Could be slightly > UV_MAX */ | |
6fa402ec | 2149 | |
c2988b20 NC |
2150 | if (numtype & IS_NUMBER_NOT_INT) { |
2151 | /* UV and NV both imprecise. */ | |
2152 | } else { | |
66a1b24b | 2153 | const UV nv_as_uv = U_V(nv); |
c2988b20 NC |
2154 | |
2155 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
2156 | SvNOK_on(sv); | |
c2988b20 | 2157 | } |
00b6aa41 | 2158 | SvIOK_on(sv); |
c2988b20 NC |
2159 | } |
2160 | } | |
2161 | } | |
2162 | } | |
2163 | } | |
28e5dec8 | 2164 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 2165 | } |
79072805 | 2166 | else { |
041457d9 | 2167 | if (!PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP) && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2168 | report_uninit(sv); |
25da4f38 IZ |
2169 | if (SvTYPE(sv) < SVt_NV) |
2170 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
2171 | /* XXX Ilya implies that this is a bug in callers that assume this |
2172 | and ideally should be fixed. */ | |
25da4f38 | 2173 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2174 | return 0.0; |
79072805 | 2175 | } |
572bbb43 | 2176 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 2177 | DEBUG_c({ |
f93f4e46 | 2178 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2179 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
2180 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2181 | RESTORE_NUMERIC_LOCAL(); |
2182 | }); | |
65202027 | 2183 | #else |
572bbb43 | 2184 | DEBUG_c({ |
f93f4e46 | 2185 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2186 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 2187 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2188 | RESTORE_NUMERIC_LOCAL(); |
2189 | }); | |
572bbb43 | 2190 | #endif |
463ee0b2 | 2191 | return SvNVX(sv); |
79072805 LW |
2192 | } |
2193 | ||
645c22ef DM |
2194 | /* asIV(): extract an integer from the string value of an SV. |
2195 | * Caller must validate PVX */ | |
2196 | ||
76e3520e | 2197 | STATIC IV |
cea2e8a9 | 2198 | S_asIV(pTHX_ SV *sv) |
36477c24 | 2199 | { |
c2988b20 | 2200 | UV value; |
66a1b24b | 2201 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
c2988b20 NC |
2202 | |
2203 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2204 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2205 | /* It's definitely an integer */ |
c2988b20 NC |
2206 | if (numtype & IS_NUMBER_NEG) { |
2207 | if (value < (UV)IV_MIN) | |
2208 | return -(IV)value; | |
2209 | } else { | |
2210 | if (value < (UV)IV_MAX) | |
2211 | return (IV)value; | |
2212 | } | |
2213 | } | |
d008e5eb | 2214 | if (!numtype) { |
d008e5eb GS |
2215 | if (ckWARN(WARN_NUMERIC)) |
2216 | not_a_number(sv); | |
2217 | } | |
3f7c398e | 2218 | return I_V(Atof(SvPVX_const(sv))); |
36477c24 | 2219 | } |
2220 | ||
645c22ef DM |
2221 | /* asUV(): extract an unsigned integer from the string value of an SV |
2222 | * Caller must validate PVX */ | |
2223 | ||
76e3520e | 2224 | STATIC UV |
cea2e8a9 | 2225 | S_asUV(pTHX_ SV *sv) |
36477c24 | 2226 | { |
c2988b20 | 2227 | UV value; |
504618e9 | 2228 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
36477c24 | 2229 | |
c2988b20 NC |
2230 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2231 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2232 | /* It's definitely an integer */ |
6fa402ec | 2233 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
2234 | return value; |
2235 | } | |
d008e5eb | 2236 | if (!numtype) { |
d008e5eb GS |
2237 | if (ckWARN(WARN_NUMERIC)) |
2238 | not_a_number(sv); | |
2239 | } | |
3f7c398e | 2240 | return U_V(Atof(SvPVX_const(sv))); |
36477c24 | 2241 | } |
2242 | ||
645c22ef DM |
2243 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
2244 | * UV as a string towards the end of buf, and return pointers to start and | |
2245 | * end of it. | |
2246 | * | |
2247 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
2248 | */ | |
2249 | ||
864dbfa3 | 2250 | static char * |
aec46f14 | 2251 | S_uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
25da4f38 | 2252 | { |
25da4f38 | 2253 | char *ptr = buf + TYPE_CHARS(UV); |
823a54a3 | 2254 | char * const ebuf = ptr; |
25da4f38 | 2255 | int sign; |
25da4f38 IZ |
2256 | |
2257 | if (is_uv) | |
2258 | sign = 0; | |
2259 | else if (iv >= 0) { | |
2260 | uv = iv; | |
2261 | sign = 0; | |
2262 | } else { | |
2263 | uv = -iv; | |
2264 | sign = 1; | |
2265 | } | |
2266 | do { | |
eb160463 | 2267 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
2268 | } while (uv /= 10); |
2269 | if (sign) | |
2270 | *--ptr = '-'; | |
2271 | *peob = ebuf; | |
2272 | return ptr; | |
2273 | } | |
2274 | ||
9af30d34 NC |
2275 | /* stringify_regexp(): private routine for use by sv_2pv_flags(): converts |
2276 | * a regexp to its stringified form. | |
2277 | */ | |
2278 | ||
2279 | static char * | |
2280 | S_stringify_regexp(pTHX_ SV *sv, MAGIC *mg, STRLEN *lp) { | |
00b6aa41 | 2281 | const regexp * const re = (regexp *)mg->mg_obj; |
9af30d34 NC |
2282 | |
2283 | if (!mg->mg_ptr) { | |
2284 | const char *fptr = "msix"; | |
2285 | char reflags[6]; | |
2286 | char ch; | |
2287 | int left = 0; | |
2288 | int right = 4; | |
00b6aa41 | 2289 | bool need_newline = 0; |
9af30d34 NC |
2290 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
2291 | ||
2292 | while((ch = *fptr++)) { | |
2293 | if(reganch & 1) { | |
2294 | reflags[left++] = ch; | |
2295 | } | |
2296 | else { | |
2297 | reflags[right--] = ch; | |
2298 | } | |
2299 | reganch >>= 1; | |
2300 | } | |
2301 | if(left != 4) { | |
2302 | reflags[left] = '-'; | |
2303 | left = 5; | |
2304 | } | |
2305 | ||
2306 | mg->mg_len = re->prelen + 4 + left; | |
2307 | /* | |
2308 | * If /x was used, we have to worry about a regex ending with a | |
2309 | * comment later being embedded within another regex. If so, we don't | |
2310 | * want this regex's "commentization" to leak out to the right part of | |
2311 | * the enclosing regex, we must cap it with a newline. | |
2312 | * | |
2313 | * So, if /x was used, we scan backwards from the end of the regex. If | |
2314 | * we find a '#' before we find a newline, we need to add a newline | |
2315 | * ourself. If we find a '\n' first (or if we don't find '#' or '\n'), | |
2316 | * we don't need to add anything. -jfriedl | |
2317 | */ | |
2318 | if (PMf_EXTENDED & re->reganch) { | |
2319 | const char *endptr = re->precomp + re->prelen; | |
2320 | while (endptr >= re->precomp) { | |
2321 | const char c = *(endptr--); | |
2322 | if (c == '\n') | |
2323 | break; /* don't need another */ | |
2324 | if (c == '#') { | |
2325 | /* we end while in a comment, so we need a newline */ | |
2326 | mg->mg_len++; /* save space for it */ | |
2327 | need_newline = 1; /* note to add it */ | |
2328 | break; | |
2329 | } | |
2330 | } | |
2331 | } | |
2332 | ||
2333 | Newx(mg->mg_ptr, mg->mg_len + 1 + left, char); | |
2334 | mg->mg_ptr[0] = '('; | |
2335 | mg->mg_ptr[1] = '?'; | |
2336 | Copy(reflags, mg->mg_ptr+2, left, char); | |
2337 | *(mg->mg_ptr+left+2) = ':'; | |
2338 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
2339 | if (need_newline) | |
2340 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
2341 | mg->mg_ptr[mg->mg_len - 1] = ')'; | |
2342 | mg->mg_ptr[mg->mg_len] = 0; | |
2343 | } | |
2344 | PL_reginterp_cnt += re->program[0].next_off; | |
2345 | ||
2346 | if (re->reganch & ROPT_UTF8) | |
2347 | SvUTF8_on(sv); | |
2348 | else | |
2349 | SvUTF8_off(sv); | |
2350 | if (lp) | |
2351 | *lp = mg->mg_len; | |
2352 | return mg->mg_ptr; | |
2353 | } | |
2354 | ||
645c22ef DM |
2355 | /* |
2356 | =for apidoc sv_2pv_flags | |
2357 | ||
ff276b08 | 2358 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
2359 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
2360 | if necessary. | |
2361 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
2362 | usually end up here too. | |
2363 | ||
2364 | =cut | |
2365 | */ | |
2366 | ||
8d6d96c1 HS |
2367 | char * |
2368 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
2369 | { | |
79072805 LW |
2370 | register char *s; |
2371 | int olderrno; | |
2372 | ||
463ee0b2 | 2373 | if (!sv) { |
cdb061a3 NC |
2374 | if (lp) |
2375 | *lp = 0; | |
73d840c0 | 2376 | return (char *)""; |
463ee0b2 | 2377 | } |
8990e307 | 2378 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
2379 | if (flags & SV_GMAGIC) |
2380 | mg_get(sv); | |
463ee0b2 | 2381 | if (SvPOKp(sv)) { |
cdb061a3 NC |
2382 | if (lp) |
2383 | *lp = SvCUR(sv); | |
10516c54 NC |
2384 | if (flags & SV_MUTABLE_RETURN) |
2385 | return SvPVX_mutable(sv); | |
4d84ee25 NC |
2386 | if (flags & SV_CONST_RETURN) |
2387 | return (char *)SvPVX_const(sv); | |
463ee0b2 LW |
2388 | return SvPVX(sv); |
2389 | } | |
75dfc8ec NC |
2390 | if (SvIOKp(sv) || SvNOKp(sv)) { |
2391 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ | |
75dfc8ec NC |
2392 | STRLEN len; |
2393 | ||
2394 | if (SvIOKp(sv)) { | |
e8ada2d0 NC |
2395 | len = SvIsUV(sv) ? my_sprintf(tbuf,"%"UVuf, (UV)SvUVX(sv)) |
2396 | : my_sprintf(tbuf,"%"IVdf, (IV)SvIVX(sv)); | |
75dfc8ec | 2397 | } else { |
e8ada2d0 NC |
2398 | Gconvert(SvNVX(sv), NV_DIG, 0, tbuf); |
2399 | len = strlen(tbuf); | |
75dfc8ec NC |
2400 | } |
2401 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ | |
2402 | /* Sneaky stuff here */ | |
00b6aa41 | 2403 | SV * const tsv = newSVpvn(tbuf, len); |
75dfc8ec NC |
2404 | |
2405 | sv_2mortal(tsv); | |
2406 | if (lp) | |
2407 | *lp = SvCUR(tsv); | |
2408 | return SvPVX(tsv); | |
2409 | } | |
2410 | else { | |
2411 | dVAR; | |
2412 | ||
2413 | #ifdef FIXNEGATIVEZERO | |
e8ada2d0 NC |
2414 | if (len == 2 && tbuf[0] == '-' && tbuf[1] == '0') { |
2415 | tbuf[0] = '0'; | |
2416 | tbuf[1] = 0; | |
75dfc8ec NC |
2417 | len = 1; |
2418 | } | |
2419 | #endif | |
2420 | SvUPGRADE(sv, SVt_PV); | |
2421 | if (lp) | |
2422 | *lp = len; | |
2423 | s = SvGROW_mutable(sv, len + 1); | |
2424 | SvCUR_set(sv, len); | |
2425 | SvPOKp_on(sv); | |
e8ada2d0 | 2426 | return memcpy(s, tbuf, len + 1); |
75dfc8ec | 2427 | } |
463ee0b2 | 2428 | } |
16d20bd9 | 2429 | if (!SvROK(sv)) { |
d008e5eb | 2430 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
041457d9 | 2431 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2432 | report_uninit(sv); |
c6ee37c5 | 2433 | } |
cdb061a3 NC |
2434 | if (lp) |
2435 | *lp = 0; | |
73d840c0 | 2436 | return (char *)""; |
16d20bd9 | 2437 | } |
463ee0b2 | 2438 | } |
ed6116ce LW |
2439 | if (SvTHINKFIRST(sv)) { |
2440 | if (SvROK(sv)) { | |
a0d0e21e | 2441 | SV* tmpstr; |
d8eae41e | 2442 | |
1554e226 | 2443 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 2444 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
50adf7d2 NC |
2445 | /* Unwrap this: */ |
2446 | /* char *pv = lp ? SvPV(tmpstr, *lp) : SvPV_nolen(tmpstr); */ | |
2447 | ||
2448 | char *pv; | |
2449 | if ((SvFLAGS(tmpstr) & (SVf_POK)) == SVf_POK) { | |
2450 | if (flags & SV_CONST_RETURN) { | |
2451 | pv = (char *) SvPVX_const(tmpstr); | |
2452 | } else { | |
2453 | pv = (flags & SV_MUTABLE_RETURN) | |
2454 | ? SvPVX_mutable(tmpstr) : SvPVX(tmpstr); | |
2455 | } | |
2456 | if (lp) | |
2457 | *lp = SvCUR(tmpstr); | |
2458 | } else { | |
2459 | pv = sv_2pv_flags(tmpstr, lp, flags); | |
2460 | } | |
446eaa42 YST |
2461 | if (SvUTF8(tmpstr)) |
2462 | SvUTF8_on(sv); | |
2463 | else | |
2464 | SvUTF8_off(sv); | |
2465 | return pv; | |
d8eae41e | 2466 | } else { |
75dfc8ec | 2467 | SV *tsv; |
f9277f47 | 2468 | MAGIC *mg; |
d8eae41e NC |
2469 | const SV *const referent = (SV*)SvRV(sv); |
2470 | ||
2471 | if (!referent) { | |
042dae7a NC |
2472 | tsv = sv_2mortal(newSVpvn("NULLREF", 7)); |
2473 | } else if (SvTYPE(referent) == SVt_PVMG | |
2474 | && ((SvFLAGS(referent) & | |
2475 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) | |
2476 | == (SVs_OBJECT|SVs_SMG)) | |
2477 | && (mg = mg_find(referent, PERL_MAGIC_qr))) { | |
9af30d34 | 2478 | return S_stringify_regexp(aTHX_ sv, mg, lp); |
d8eae41e NC |
2479 | } else { |
2480 | const char *const typestr = sv_reftype(referent, 0); | |
2481 | ||
2482 | tsv = sv_newmortal(); | |
2483 | if (SvOBJECT(referent)) { | |
2484 | const char *const name = HvNAME_get(SvSTASH(referent)); | |
2485 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s(0x%"UVxf")", | |
2486 | name ? name : "__ANON__" , typestr, | |
2487 | PTR2UV(referent)); | |
2488 | } | |
2489 | else | |
2490 | Perl_sv_setpvf(aTHX_ tsv, "%s(0x%"UVxf")", typestr, | |
2491 | PTR2UV(referent)); | |
c080367d | 2492 | } |
042dae7a NC |
2493 | if (lp) |
2494 | *lp = SvCUR(tsv); | |
2495 | return SvPVX(tsv); | |
463ee0b2 | 2496 | } |
79072805 | 2497 | } |
0336b60e | 2498 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2499 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2500 | report_uninit(sv); |
cdb061a3 NC |
2501 | if (lp) |
2502 | *lp = 0; | |
73d840c0 | 2503 | return (char *)""; |
79072805 | 2504 | } |
79072805 | 2505 | } |
28e5dec8 JH |
2506 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
2507 | /* I'm assuming that if both IV and NV are equally valid then | |
2508 | converting the IV is going to be more efficient */ | |
e1ec3a88 AL |
2509 | const U32 isIOK = SvIOK(sv); |
2510 | const U32 isUIOK = SvIsUV(sv); | |
28e5dec8 JH |
2511 | char buf[TYPE_CHARS(UV)]; |
2512 | char *ebuf, *ptr; | |
2513 | ||
2514 | if (SvTYPE(sv) < SVt_PVIV) | |
2515 | sv_upgrade(sv, SVt_PVIV); | |
2516 | if (isUIOK) | |
2517 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
2518 | else | |
2519 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
5902b6a9 NC |
2520 | /* inlined from sv_setpvn */ |
2521 | SvGROW_mutable(sv, (STRLEN)(ebuf - ptr + 1)); | |
4d84ee25 | 2522 | Move(ptr,SvPVX_mutable(sv),ebuf - ptr,char); |
28e5dec8 JH |
2523 | SvCUR_set(sv, ebuf - ptr); |
2524 | s = SvEND(sv); | |
2525 | *s = '\0'; | |
2526 | if (isIOK) | |
2527 | SvIOK_on(sv); | |
2528 | else | |
2529 | SvIOKp_on(sv); | |
2530 | if (isUIOK) | |
2531 | SvIsUV_on(sv); | |
2532 | } | |
2533 | else if (SvNOKp(sv)) { | |
79072805 LW |
2534 | if (SvTYPE(sv) < SVt_PVNV) |
2535 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 2536 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
5902b6a9 | 2537 | s = SvGROW_mutable(sv, NV_DIG + 20); |
79072805 | 2538 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 2539 | #ifdef apollo |
463ee0b2 | 2540 | if (SvNVX(sv) == 0.0) |
79072805 LW |
2541 | (void)strcpy(s,"0"); |
2542 | else | |
2543 | #endif /*apollo*/ | |
bbce6d69 | 2544 | { |
2d4389e4 | 2545 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 2546 | } |
79072805 | 2547 | errno = olderrno; |
a0d0e21e LW |
2548 | #ifdef FIXNEGATIVEZERO |
2549 | if (*s == '-' && s[1] == '0' && !s[2]) | |
2550 | strcpy(s,"0"); | |
2551 | #endif | |
79072805 LW |
2552 | while (*s) s++; |
2553 | #ifdef hcx | |
2554 | if (s[-1] == '.') | |
46fc3d4c | 2555 | *--s = '\0'; |
79072805 LW |
2556 | #endif |
2557 | } | |
79072805 | 2558 | else { |
041457d9 | 2559 | if (!PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP) && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2560 | report_uninit(sv); |
cdb061a3 | 2561 | if (lp) |
00b6aa41 | 2562 | *lp = 0; |
25da4f38 IZ |
2563 | if (SvTYPE(sv) < SVt_PV) |
2564 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2565 | sv_upgrade(sv, SVt_PV); | |
73d840c0 | 2566 | return (char *)""; |
79072805 | 2567 | } |
cdb061a3 | 2568 | { |
823a54a3 | 2569 | const STRLEN len = s - SvPVX_const(sv); |
cdb061a3 NC |
2570 | if (lp) |
2571 | *lp = len; | |
2572 | SvCUR_set(sv, len); | |
2573 | } | |
79072805 | 2574 | SvPOK_on(sv); |
1d7c1841 | 2575 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 2576 | PTR2UV(sv),SvPVX_const(sv))); |
4d84ee25 NC |
2577 | if (flags & SV_CONST_RETURN) |
2578 | return (char *)SvPVX_const(sv); | |
10516c54 NC |
2579 | if (flags & SV_MUTABLE_RETURN) |
2580 | return SvPVX_mutable(sv); | |
463ee0b2 LW |
2581 | return SvPVX(sv); |
2582 | } | |
2583 | ||
645c22ef | 2584 | /* |
6050d10e JP |
2585 | =for apidoc sv_copypv |
2586 | ||
2587 | Copies a stringified representation of the source SV into the | |
2588 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 2589 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 2590 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
2591 | sv_2pv[_flags] but operates directly on an SV instead of just the |
2592 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
2593 | would lose the UTF-8'ness of the PV. |
2594 | ||
2595 | =cut | |
2596 | */ | |
2597 | ||
2598 | void | |
2599 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
2600 | { | |
446eaa42 | 2601 | STRLEN len; |
53c1dcc0 | 2602 | const char * const s = SvPV_const(ssv,len); |
cb50f42d | 2603 | sv_setpvn(dsv,s,len); |
446eaa42 | 2604 | if (SvUTF8(ssv)) |
cb50f42d | 2605 | SvUTF8_on(dsv); |
446eaa42 | 2606 | else |
cb50f42d | 2607 | SvUTF8_off(dsv); |
6050d10e JP |
2608 | } |
2609 | ||
2610 | /* | |
645c22ef DM |
2611 | =for apidoc sv_2pvbyte |
2612 | ||
2613 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 2614 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
2615 | side-effect. |
2616 | ||
2617 | Usually accessed via the C<SvPVbyte> macro. | |
2618 | ||
2619 | =cut | |
2620 | */ | |
2621 | ||
7340a771 GS |
2622 | char * |
2623 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
2624 | { | |
0875d2fe | 2625 | sv_utf8_downgrade(sv,0); |
97972285 | 2626 | return lp ? SvPV(sv,*lp) : SvPV_nolen(sv); |
7340a771 GS |
2627 | } |
2628 | ||
645c22ef | 2629 | /* |
035cbb0e RGS |
2630 | =for apidoc sv_2pvutf8 |
2631 | ||
2632 | Return a pointer to the UTF-8-encoded representation of the SV, and set *lp | |
2633 | to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
2634 | ||
2635 | Usually accessed via the C<SvPVutf8> macro. | |
2636 | ||
2637 | =cut | |
2638 | */ | |
645c22ef | 2639 | |
7340a771 GS |
2640 | char * |
2641 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
2642 | { | |
035cbb0e RGS |
2643 | sv_utf8_upgrade(sv); |
2644 | return lp ? SvPV(sv,*lp) : SvPV_nolen(sv); | |
7340a771 | 2645 | } |
1c846c1f | 2646 | |
7ee2227d | 2647 | |
645c22ef DM |
2648 | /* |
2649 | =for apidoc sv_2bool | |
2650 | ||
2651 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 2652 | sv_true() or its macro equivalent. |
645c22ef DM |
2653 | |
2654 | =cut | |
2655 | */ | |
2656 | ||
463ee0b2 | 2657 | bool |
864dbfa3 | 2658 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 2659 | { |
5b295bef | 2660 | SvGETMAGIC(sv); |
463ee0b2 | 2661 | |
a0d0e21e LW |
2662 | if (!SvOK(sv)) |
2663 | return 0; | |
2664 | if (SvROK(sv)) { | |
a0d0e21e | 2665 | SV* tmpsv; |
1554e226 | 2666 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 2667 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 2668 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
2669 | return SvRV(sv) != 0; |
2670 | } | |
463ee0b2 | 2671 | if (SvPOKp(sv)) { |
53c1dcc0 AL |
2672 | register XPV* const Xpvtmp = (XPV*)SvANY(sv); |
2673 | if (Xpvtmp && | |
339049b0 | 2674 | (*sv->sv_u.svu_pv > '0' || |
11343788 | 2675 | Xpvtmp->xpv_cur > 1 || |
339049b0 | 2676 | (Xpvtmp->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
463ee0b2 LW |
2677 | return 1; |
2678 | else | |
2679 | return 0; | |
2680 | } | |
2681 | else { | |
2682 | if (SvIOKp(sv)) | |
2683 | return SvIVX(sv) != 0; | |
2684 | else { | |
2685 | if (SvNOKp(sv)) | |
2686 | return SvNVX(sv) != 0.0; | |
2687 | else | |
2688 | return FALSE; | |
2689 | } | |
2690 | } | |
79072805 LW |
2691 | } |
2692 | ||
c461cf8f JH |
2693 | /* |
2694 | =for apidoc sv_utf8_upgrade | |
2695 | ||
78ea37eb | 2696 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 2697 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
2698 | Always sets the SvUTF8 flag to avoid future validity checks even |
2699 | if all the bytes have hibit clear. | |
c461cf8f | 2700 | |
13a6c0e0 JH |
2701 | This is not as a general purpose byte encoding to Unicode interface: |
2702 | use the Encode extension for that. | |
2703 | ||
8d6d96c1 HS |
2704 | =for apidoc sv_utf8_upgrade_flags |
2705 | ||
78ea37eb | 2706 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 2707 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
2708 | Always sets the SvUTF8 flag to avoid future validity checks even |
2709 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
2710 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
2711 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
2712 | ||
13a6c0e0 JH |
2713 | This is not as a general purpose byte encoding to Unicode interface: |
2714 | use the Encode extension for that. | |
2715 | ||
8d6d96c1 HS |
2716 | =cut |
2717 | */ | |
2718 | ||
2719 | STRLEN | |
2720 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
2721 | { | |
808c356f RGS |
2722 | if (sv == &PL_sv_undef) |
2723 | return 0; | |
e0e62c2a NIS |
2724 | if (!SvPOK(sv)) { |
2725 | STRLEN len = 0; | |
d52b7888 NC |
2726 | if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) { |
2727 | (void) sv_2pv_flags(sv,&len, flags); | |
2728 | if (SvUTF8(sv)) | |
2729 | return len; | |
2730 | } else { | |
2731 | (void) SvPV_force(sv,len); | |
2732 | } | |
e0e62c2a | 2733 | } |
4411f3b6 | 2734 | |
f5cee72b | 2735 | if (SvUTF8(sv)) { |
5fec3b1d | 2736 | return SvCUR(sv); |
f5cee72b | 2737 | } |
5fec3b1d | 2738 | |
765f542d NC |
2739 | if (SvIsCOW(sv)) { |
2740 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
2741 | } |
2742 | ||
88632417 | 2743 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 2744 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 2745 | else { /* Assume Latin-1/EBCDIC */ |
c4e7c712 NC |
2746 | /* This function could be much more efficient if we |
2747 | * had a FLAG in SVs to signal if there are any hibit | |
2748 | * chars in the PV. Given that there isn't such a flag | |
2749 | * make the loop as fast as possible. */ | |
00b6aa41 | 2750 | const U8 * const s = (U8 *) SvPVX_const(sv); |
c4420975 | 2751 | const U8 * const e = (U8 *) SvEND(sv); |
93524f2b | 2752 | const U8 *t = s; |
c4e7c712 NC |
2753 | |
2754 | while (t < e) { | |
53c1dcc0 | 2755 | const U8 ch = *t++; |
00b6aa41 AL |
2756 | /* Check for hi bit */ |
2757 | if (!NATIVE_IS_INVARIANT(ch)) { | |
2758 | STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */ | |
2759 | U8 * const recoded = bytes_to_utf8((U8*)s, &len); | |
2760 | ||
2761 | SvPV_free(sv); /* No longer using what was there before. */ | |
2762 | SvPV_set(sv, (char*)recoded); | |
2763 | SvCUR_set(sv, len - 1); | |
2764 | SvLEN_set(sv, len); /* No longer know the real size. */ | |
c4e7c712 | 2765 | break; |
00b6aa41 | 2766 | } |
c4e7c712 NC |
2767 | } |
2768 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ | |
2769 | SvUTF8_on(sv); | |
560a288e | 2770 | } |
4411f3b6 | 2771 | return SvCUR(sv); |
560a288e GS |
2772 | } |
2773 | ||
c461cf8f JH |
2774 | /* |
2775 | =for apidoc sv_utf8_downgrade | |
2776 | ||
78ea37eb TS |
2777 | Attempts to convert the PV of an SV from characters to bytes. |
2778 | If the PV contains a character beyond byte, this conversion will fail; | |
2779 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
2780 | true, croaks. |
2781 | ||
13a6c0e0 JH |
2782 | This is not as a general purpose Unicode to byte encoding interface: |
2783 | use the Encode extension for that. | |
2784 | ||
c461cf8f JH |
2785 | =cut |
2786 | */ | |
2787 | ||
560a288e GS |
2788 | bool |
2789 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
2790 | { | |
78ea37eb | 2791 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 2792 | if (SvCUR(sv)) { |
03cfe0ae | 2793 | U8 *s; |
652088fc | 2794 | STRLEN len; |
fa301091 | 2795 | |
765f542d NC |
2796 | if (SvIsCOW(sv)) { |
2797 | sv_force_normal_flags(sv, 0); | |
2798 | } | |
03cfe0ae NIS |
2799 | s = (U8 *) SvPV(sv, len); |
2800 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
2801 | if (fail_ok) |
2802 | return FALSE; | |
2803 | else { | |
2804 | if (PL_op) | |
2805 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 2806 | OP_DESC(PL_op)); |
fa301091 JH |
2807 | else |
2808 | Perl_croak(aTHX_ "Wide character"); | |
2809 | } | |
4b3603a4 | 2810 | } |
b162af07 | 2811 | SvCUR_set(sv, len); |
67e989fb | 2812 | } |
560a288e | 2813 | } |
ffebcc3e | 2814 | SvUTF8_off(sv); |
560a288e GS |
2815 | return TRUE; |
2816 | } | |
2817 | ||
c461cf8f JH |
2818 | /* |
2819 | =for apidoc sv_utf8_encode | |
2820 | ||
78ea37eb TS |
2821 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
2822 | flag off so that it looks like octets again. | |
c461cf8f JH |
2823 | |
2824 | =cut | |
2825 | */ | |
2826 | ||
560a288e GS |
2827 | void |
2828 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
2829 | { | |
4411f3b6 | 2830 | (void) sv_utf8_upgrade(sv); |
4c94c214 NC |
2831 | if (SvIsCOW(sv)) { |
2832 | sv_force_normal_flags(sv, 0); | |
2833 | } | |
2834 | if (SvREADONLY(sv)) { | |
2835 | Perl_croak(aTHX_ PL_no_modify); | |
2836 | } | |
560a288e GS |
2837 | SvUTF8_off(sv); |
2838 | } | |
2839 | ||
4411f3b6 NIS |
2840 | /* |
2841 | =for apidoc sv_utf8_decode | |
2842 | ||
78ea37eb TS |
2843 | If the PV of the SV is an octet sequence in UTF-8 |
2844 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
2845 | so that it looks like a character. If the PV contains only single-byte | |
2846 | characters, the C<SvUTF8> flag stays being off. | |
2847 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
2848 | |
2849 | =cut | |
2850 | */ | |
2851 | ||
560a288e GS |
2852 | bool |
2853 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
2854 | { | |
78ea37eb | 2855 | if (SvPOKp(sv)) { |
93524f2b NC |
2856 | const U8 *c; |
2857 | const U8 *e; | |
9cbac4c7 | 2858 | |
645c22ef DM |
2859 | /* The octets may have got themselves encoded - get them back as |
2860 | * bytes | |
2861 | */ | |
2862 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
2863 | return FALSE; |
2864 | ||
2865 | /* it is actually just a matter of turning the utf8 flag on, but | |
2866 | * we want to make sure everything inside is valid utf8 first. | |
2867 | */ | |
93524f2b | 2868 | c = (const U8 *) SvPVX_const(sv); |
63cd0674 | 2869 | if (!is_utf8_string(c, SvCUR(sv)+1)) |
67e989fb | 2870 | return FALSE; |
93524f2b | 2871 | e = (const U8 *) SvEND(sv); |
511c2ff0 | 2872 | while (c < e) { |
b64e5050 | 2873 | const U8 ch = *c++; |
c4d5f83a | 2874 | if (!UTF8_IS_INVARIANT(ch)) { |
67e989fb JH |
2875 | SvUTF8_on(sv); |
2876 | break; | |
2877 | } | |
560a288e | 2878 | } |
560a288e GS |
2879 | } |
2880 | return TRUE; | |
2881 | } | |
2882 | ||
954c1994 GS |
2883 | /* |
2884 | =for apidoc sv_setsv | |
2885 | ||
645c22ef DM |
2886 | Copies the contents of the source SV C<ssv> into the destination SV |
2887 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
2888 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
2889 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
2890 | content of the destination. | |
2891 | ||
2892 | You probably want to use one of the assortment of wrappers, such as | |
2893 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
2894 | C<SvSetMagicSV_nosteal>. | |
2895 | ||
8d6d96c1 HS |
2896 | =for apidoc sv_setsv_flags |
2897 | ||
645c22ef DM |
2898 | Copies the contents of the source SV C<ssv> into the destination SV |
2899 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
2900 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
2901 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
2902 | content of the destination. | |
2903 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
5fcdf167 NC |
2904 | C<ssv> if appropriate, else not. If the C<flags> parameter has the |
2905 | C<NOSTEAL> bit set then the buffers of temps will not be stolen. <sv_setsv> | |
2906 | and C<sv_setsv_nomg> are implemented in terms of this function. | |
645c22ef DM |
2907 | |
2908 | You probably want to use one of the assortment of wrappers, such as | |
2909 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
2910 | C<SvSetMagicSV_nosteal>. | |
2911 | ||
2912 | This is the primary function for copying scalars, and most other | |
2913 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
2914 | |
2915 | =cut | |
2916 | */ | |
2917 | ||
2918 | void | |
2919 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
2920 | { | |
8990e307 LW |
2921 | register U32 sflags; |
2922 | register int dtype; | |
2923 | register int stype; | |
463ee0b2 | 2924 | |
79072805 LW |
2925 | if (sstr == dstr) |
2926 | return; | |
765f542d | 2927 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 2928 | if (!sstr) |
3280af22 | 2929 | sstr = &PL_sv_undef; |
8990e307 LW |
2930 | stype = SvTYPE(sstr); |
2931 | dtype = SvTYPE(dstr); | |
79072805 | 2932 | |
a0d0e21e | 2933 | SvAMAGIC_off(dstr); |
7a5fa8a2 | 2934 | if ( SvVOK(dstr) ) |
ece467f9 JP |
2935 | { |
2936 | /* need to nuke the magic */ | |
2937 | mg_free(dstr); | |
2938 | SvRMAGICAL_off(dstr); | |
2939 | } | |
9e7bc3e8 | 2940 | |
463ee0b2 | 2941 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 2942 | |
8990e307 | 2943 | switch (stype) { |
79072805 | 2944 | case SVt_NULL: |
aece5585 | 2945 | undef_sstr: |
20408e3c GS |
2946 | if (dtype != SVt_PVGV) { |
2947 | (void)SvOK_off(dstr); | |
2948 | return; | |
2949 | } | |
2950 | break; | |
463ee0b2 | 2951 | case SVt_IV: |
aece5585 GA |
2952 | if (SvIOK(sstr)) { |
2953 | switch (dtype) { | |
2954 | case SVt_NULL: | |
8990e307 | 2955 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
2956 | break; |
2957 | case SVt_NV: | |
8990e307 | 2958 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
2959 | break; |
2960 | case SVt_RV: | |
2961 | case SVt_PV: | |
a0d0e21e | 2962 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
2963 | break; |
2964 | } | |
2965 | (void)SvIOK_only(dstr); | |
45977657 | 2966 | SvIV_set(dstr, SvIVX(sstr)); |
25da4f38 IZ |
2967 | if (SvIsUV(sstr)) |
2968 | SvIsUV_on(dstr); | |
27c9684d AP |
2969 | if (SvTAINTED(sstr)) |
2970 | SvTAINT(dstr); | |
aece5585 | 2971 | return; |
8990e307 | 2972 | } |
aece5585 GA |
2973 | goto undef_sstr; |
2974 | ||
463ee0b2 | 2975 | case SVt_NV: |
aece5585 GA |
2976 | if (SvNOK(sstr)) { |
2977 | switch (dtype) { | |
2978 | case SVt_NULL: | |
2979 | case SVt_IV: | |
8990e307 | 2980 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
2981 | break; |
2982 | case SVt_RV: | |
2983 | case SVt_PV: | |
2984 | case SVt_PVIV: | |
a0d0e21e | 2985 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
2986 | break; |
2987 | } | |
9d6ce603 | 2988 | SvNV_set(dstr, SvNVX(sstr)); |
aece5585 | 2989 | (void)SvNOK_only(dstr); |
27c9684d AP |
2990 | if (SvTAINTED(sstr)) |
2991 | SvTAINT(dstr); | |
aece5585 | 2992 | return; |
8990e307 | 2993 | } |
aece5585 GA |
2994 | goto undef_sstr; |
2995 | ||
ed6116ce | 2996 | case SVt_RV: |
8990e307 | 2997 | if (dtype < SVt_RV) |
ed6116ce | 2998 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 2999 | else if (dtype == SVt_PVGV && |
23bb1b96 | 3000 | SvROK(sstr) && SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
c07a80fd | 3001 | sstr = SvRV(sstr); |
a5f75d66 | 3002 | if (sstr == dstr) { |
1d7c1841 GS |
3003 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3004 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3005 | { | |
a5f75d66 | 3006 | GvIMPORTED_on(dstr); |
1d7c1841 | 3007 | } |
a5f75d66 AD |
3008 | GvMULTI_on(dstr); |
3009 | return; | |
3010 | } | |
c07a80fd | 3011 | goto glob_assign; |
3012 | } | |
ed6116ce | 3013 | break; |
fc36a67e | 3014 | case SVt_PVFM: |
f8c7b90f | 3015 | #ifdef PERL_OLD_COPY_ON_WRITE |
d89fc664 NC |
3016 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
3017 | if (dtype < SVt_PVIV) | |
3018 | sv_upgrade(dstr, SVt_PVIV); | |
3019 | break; | |
3020 | } | |
3021 | /* Fall through */ | |
3022 | #endif | |
3023 | case SVt_PV: | |
8990e307 | 3024 | if (dtype < SVt_PV) |
463ee0b2 | 3025 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
3026 | break; |
3027 | case SVt_PVIV: | |
8990e307 | 3028 | if (dtype < SVt_PVIV) |
463ee0b2 | 3029 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
3030 | break; |
3031 | case SVt_PVNV: | |
8990e307 | 3032 | if (dtype < SVt_PVNV) |
463ee0b2 | 3033 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 3034 | break; |
4633a7c4 LW |
3035 | case SVt_PVAV: |
3036 | case SVt_PVHV: | |
3037 | case SVt_PVCV: | |
4633a7c4 | 3038 | case SVt_PVIO: |
a3b680e6 AL |
3039 | { |
3040 | const char * const type = sv_reftype(sstr,0); | |
533c011a | 3041 | if (PL_op) |
a3b680e6 | 3042 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", type, OP_NAME(PL_op)); |
4633a7c4 | 3043 | else |
a3b680e6 AL |
3044 | Perl_croak(aTHX_ "Bizarre copy of %s", type); |
3045 | } | |
4633a7c4 LW |
3046 | break; |
3047 | ||
79072805 | 3048 | case SVt_PVGV: |
8990e307 | 3049 | if (dtype <= SVt_PVGV) { |
c07a80fd | 3050 | glob_assign: |
a5f75d66 | 3051 | if (dtype != SVt_PVGV) { |
a3b680e6 AL |
3052 | const char * const name = GvNAME(sstr); |
3053 | const STRLEN len = GvNAMELEN(sstr); | |
b76195c2 DM |
3054 | /* don't upgrade SVt_PVLV: it can hold a glob */ |
3055 | if (dtype != SVt_PVLV) | |
3056 | sv_upgrade(dstr, SVt_PVGV); | |
14befaf4 | 3057 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
e15faf7d NC |
3058 | GvSTASH(dstr) = GvSTASH(sstr); |
3059 | if (GvSTASH(dstr)) | |
3060 | Perl_sv_add_backref(aTHX_ (SV*)GvSTASH(dstr), dstr); | |
a0d0e21e LW |
3061 | GvNAME(dstr) = savepvn(name, len); |
3062 | GvNAMELEN(dstr) = len; | |
3063 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
3064 | } | |
5bd07a3d | 3065 | |
7fb37951 AMS |
3066 | #ifdef GV_UNIQUE_CHECK |
3067 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3068 | Perl_croak(aTHX_ PL_no_modify); |
3069 | } | |
3070 | #endif | |
3071 | ||
a0d0e21e | 3072 | (void)SvOK_off(dstr); |
a5f75d66 | 3073 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 3074 | gp_free((GV*)dstr); |
79072805 | 3075 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
3076 | if (SvTAINTED(sstr)) |
3077 | SvTAINT(dstr); | |
1d7c1841 GS |
3078 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3079 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3080 | { | |
a5f75d66 | 3081 | GvIMPORTED_on(dstr); |
1d7c1841 | 3082 | } |
a5f75d66 | 3083 | GvMULTI_on(dstr); |
79072805 LW |
3084 | return; |
3085 | } | |
3086 | /* FALL THROUGH */ | |
3087 | ||
3088 | default: | |
8d6d96c1 | 3089 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 3090 | mg_get(sstr); |
eb160463 | 3091 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
3092 | stype = SvTYPE(sstr); |
3093 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
3094 | goto glob_assign; | |
3095 | } | |
3096 | } | |
ded42b9f | 3097 | if (stype == SVt_PVLV) |
862a34c6 | 3098 | SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 3099 | else |
862a34c6 | 3100 | SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
3101 | } |
3102 | ||
8990e307 LW |
3103 | sflags = SvFLAGS(sstr); |
3104 | ||
3105 | if (sflags & SVf_ROK) { | |
3106 | if (dtype >= SVt_PV) { | |
3107 | if (dtype == SVt_PVGV) { | |
823a54a3 | 3108 | SV * const sref = SvREFCNT_inc(SvRV(sstr)); |
8990e307 | 3109 | SV *dref = 0; |
a3b680e6 | 3110 | const int intro = GvINTRO(dstr); |
a0d0e21e | 3111 | |
7fb37951 AMS |
3112 | #ifdef GV_UNIQUE_CHECK |
3113 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3114 | Perl_croak(aTHX_ PL_no_modify); |
3115 | } | |
3116 | #endif | |
3117 | ||
a0d0e21e | 3118 | if (intro) { |
a5f75d66 | 3119 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 3120 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 3121 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 3122 | } |
a5f75d66 | 3123 | GvMULTI_on(dstr); |
8990e307 LW |
3124 | switch (SvTYPE(sref)) { |
3125 | case SVt_PVAV: | |
a0d0e21e | 3126 | if (intro) |
890ed176 | 3127 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
3128 | else |
3129 | dref = (SV*)GvAV(dstr); | |
8990e307 | 3130 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 3131 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
3132 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3133 | { | |
a5f75d66 | 3134 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 3135 | } |
8990e307 LW |
3136 | break; |
3137 | case SVt_PVHV: | |
a0d0e21e | 3138 | if (intro) |
890ed176 | 3139 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
3140 | else |
3141 | dref = (SV*)GvHV(dstr); | |
8990e307 | 3142 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 3143 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
3144 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3145 | { | |
a5f75d66 | 3146 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 3147 | } |
8990e307 LW |
3148 | break; |
3149 | case SVt_PVCV: | |
8ebc5c01 | 3150 | if (intro) { |
3151 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
3152 | SvREFCNT_dec(GvCV(dstr)); | |
3153 | GvCV(dstr) = Nullcv; | |
68dc0745 | 3154 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 3155 | PL_sub_generation++; |
8ebc5c01 | 3156 | } |
890ed176 | 3157 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 3158 | } |
68dc0745 | 3159 | else |
3160 | dref = (SV*)GvCV(dstr); | |
3161 | if (GvCV(dstr) != (CV*)sref) { | |
823a54a3 | 3162 | CV* const cv = GvCV(dstr); |
4633a7c4 | 3163 | if (cv) { |
68dc0745 | 3164 | if (!GvCVGEN((GV*)dstr) && |
3165 | (CvROOT(cv) || CvXSUB(cv))) | |
3166 | { | |
beab0874 JT |
3167 | /* Redefining a sub - warning is mandatory if |
3168 | it was a const and its value changed. */ | |
3169 | if (ckWARN(WARN_REDEFINE) | |
3170 | || (CvCONST(cv) | |
3171 | && (!CvCONST((CV*)sref) | |
3172 | || sv_cmp(cv_const_sv(cv), | |
3173 | cv_const_sv((CV*)sref))))) | |
3174 | { | |
9014280d | 3175 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 3176 | CvCONST(cv) |
910764e6 RGS |
3177 | ? "Constant subroutine %s::%s redefined" |
3178 | : "Subroutine %s::%s redefined", | |
bfcb3514 | 3179 | HvNAME_get(GvSTASH((GV*)dstr)), |
beab0874 JT |
3180 | GvENAME((GV*)dstr)); |
3181 | } | |
9607fc9c | 3182 | } |
fb24441d RGS |
3183 | if (!intro) |
3184 | cv_ckproto(cv, (GV*)dstr, | |
93524f2b NC |
3185 | SvPOK(sref) |
3186 | ? SvPVX_const(sref) : Nullch); | |
4633a7c4 | 3187 | } |
a5f75d66 | 3188 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 3189 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 3190 | GvASSUMECV_on(dstr); |
3280af22 | 3191 | PL_sub_generation++; |
a5f75d66 | 3192 | } |
39bac7f7 | 3193 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
3194 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3195 | { | |
a5f75d66 | 3196 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 3197 | } |
8990e307 | 3198 | break; |
91bba347 LW |
3199 | case SVt_PVIO: |
3200 | if (intro) | |
890ed176 | 3201 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
3202 | else |
3203 | dref = (SV*)GvIOp(dstr); | |
3204 | GvIOp(dstr) = (IO*)sref; | |
3205 | break; | |
f4d13ee9 JH |
3206 | case SVt_PVFM: |
3207 | if (intro) | |
890ed176 | 3208 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
3209 | else |
3210 | dref = (SV*)GvFORM(dstr); | |
3211 | GvFORM(dstr) = (CV*)sref; | |
3212 | break; | |
8990e307 | 3213 | default: |
a0d0e21e | 3214 | if (intro) |
890ed176 | 3215 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
3216 | else |
3217 | dref = (SV*)GvSV(dstr); | |
8990e307 | 3218 | GvSV(dstr) = sref; |
39bac7f7 | 3219 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
3220 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3221 | { | |
a5f75d66 | 3222 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 3223 | } |
8990e307 LW |
3224 | break; |
3225 | } | |
3226 | if (dref) | |
3227 | SvREFCNT_dec(dref); | |
27c9684d AP |
3228 | if (SvTAINTED(sstr)) |
3229 | SvTAINT(dstr); | |
8990e307 LW |
3230 | return; |
3231 | } | |
3f7c398e | 3232 | if (SvPVX_const(dstr)) { |
8bd4d4c5 | 3233 | SvPV_free(dstr); |
b162af07 SP |
3234 | SvLEN_set(dstr, 0); |
3235 | SvCUR_set(dstr, 0); | |
a0d0e21e | 3236 | } |
8990e307 | 3237 | } |
a0d0e21e | 3238 | (void)SvOK_off(dstr); |
b162af07 | 3239 | SvRV_set(dstr, SvREFCNT_inc(SvRV(sstr))); |
ed6116ce | 3240 | SvROK_on(dstr); |
8990e307 | 3241 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
3242 | SvNOKp_on(dstr); |
3243 | /* Only set the public OK flag if the source has public OK. */ | |
3244 | if (sflags & SVf_NOK) | |
3245 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 3246 | SvNV_set(dstr, SvNVX(sstr)); |
ed6116ce | 3247 | } |
8990e307 | 3248 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
3249 | (void)SvIOKp_on(dstr); |
3250 | if (sflags & SVf_IOK) | |
3251 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 3252 | if (sflags & SVf_IVisUV) |
25da4f38 | 3253 | SvIsUV_on(dstr); |
45977657 | 3254 | SvIV_set(dstr, SvIVX(sstr)); |
ed6116ce | 3255 | } |
a0d0e21e LW |
3256 | if (SvAMAGIC(sstr)) { |
3257 | SvAMAGIC_on(dstr); | |
3258 | } | |
ed6116ce | 3259 | } |
8990e307 | 3260 | else if (sflags & SVp_POK) { |
765f542d | 3261 | bool isSwipe = 0; |
79072805 LW |
3262 | |
3263 | /* | |
3264 | * Check to see if we can just swipe the string. If so, it's a | |
3265 | * possible small lose on short strings, but a big win on long ones. | |
3f7c398e SP |
3266 | * It might even be a win on short strings if SvPVX_const(dstr) |
3267 | * has to be allocated and SvPVX_const(sstr) has to be freed. | |
79072805 LW |
3268 | */ |
3269 | ||
120fac95 NC |
3270 | /* Whichever path we take through the next code, we want this true, |
3271 | and doing it now facilitates the COW check. */ | |
3272 | (void)SvPOK_only(dstr); | |
3273 | ||
765f542d | 3274 | if ( |
b8f9541a NC |
3275 | /* We're not already COW */ |
3276 | ((sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
f8c7b90f | 3277 | #ifndef PERL_OLD_COPY_ON_WRITE |
b8f9541a NC |
3278 | /* or we are, but dstr isn't a suitable target. */ |
3279 | || (SvFLAGS(dstr) & CAN_COW_MASK) != CAN_COW_FLAGS | |
3280 | #endif | |
3281 | ) | |
765f542d | 3282 | && |
765f542d NC |
3283 | !(isSwipe = |
3284 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
3285 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
5fcdf167 NC |
3286 | (!(flags & SV_NOSTEAL)) && |
3287 | /* and we're allowed to steal temps */ | |
765f542d NC |
3288 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ |
3289 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 3290 | /* and won't be needed again, potentially */ |
765f542d | 3291 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
f8c7b90f | 3292 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 3293 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS |
120fac95 | 3294 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS |
765f542d NC |
3295 | && SvTYPE(sstr) >= SVt_PVIV) |
3296 | #endif | |
3297 | ) { | |
3298 | /* Failed the swipe test, and it's not a shared hash key either. | |
3299 | Have to copy the string. */ | |
3300 | STRLEN len = SvCUR(sstr); | |
3301 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
3f7c398e | 3302 | Move(SvPVX_const(sstr),SvPVX(dstr),len,char); |
765f542d NC |
3303 | SvCUR_set(dstr, len); |
3304 | *SvEND(dstr) = '\0'; | |
765f542d | 3305 | } else { |
f8c7b90f | 3306 | /* If PERL_OLD_COPY_ON_WRITE is not defined, then isSwipe will always |
765f542d | 3307 | be true in here. */ |
765f542d NC |
3308 | /* Either it's a shared hash key, or it's suitable for |
3309 | copy-on-write or we can swipe the string. */ | |
46187eeb | 3310 | if (DEBUG_C_TEST) { |
ed252734 | 3311 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
3312 | sv_dump(sstr); |
3313 | sv_dump(dstr); | |
46187eeb | 3314 | } |
f8c7b90f | 3315 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
3316 | if (!isSwipe) { |
3317 | /* I believe I should acquire a global SV mutex if | |
3318 | it's a COW sv (not a shared hash key) to stop | |
3319 | it going un copy-on-write. | |
3320 | If the source SV has gone un copy on write between up there | |
3321 | and down here, then (assert() that) it is of the correct | |
3322 | form to make it copy on write again */ | |
3323 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
3324 | != (SVf_FAKE | SVf_READONLY)) { | |
3325 | SvREADONLY_on(sstr); | |
3326 | SvFAKE_on(sstr); | |
3327 | /* Make the source SV into a loop of 1. | |
3328 | (about to become 2) */ | |
a29f6d03 | 3329 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
3330 | } |
3331 | } | |
3332 | #endif | |
3333 | /* Initial code is common. */ | |
94010e71 NC |
3334 | if (SvPVX_const(dstr)) { /* we know that dtype >= SVt_PV */ |
3335 | SvPV_free(dstr); | |
79072805 | 3336 | } |
765f542d | 3337 | |
765f542d NC |
3338 | if (!isSwipe) { |
3339 | /* making another shared SV. */ | |
3340 | STRLEN cur = SvCUR(sstr); | |
3341 | STRLEN len = SvLEN(sstr); | |
f8c7b90f | 3342 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 3343 | if (len) { |
b8f9541a | 3344 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
3345 | /* SvIsCOW_normal */ |
3346 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
3347 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
3348 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 3349 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
a604c751 NC |
3350 | } else |
3351 | #endif | |
3352 | { | |
765f542d | 3353 | /* SvIsCOW_shared_hash */ |
46187eeb NC |
3354 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
3355 | "Copy on write: Sharing hash\n")); | |
b8f9541a | 3356 | |
bdd68bc3 | 3357 | assert (SvTYPE(dstr) >= SVt_PV); |
765f542d | 3358 | SvPV_set(dstr, |
d1db91c6 | 3359 | HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr))))); |
bdd68bc3 | 3360 | } |
87a1ef3d SP |
3361 | SvLEN_set(dstr, len); |
3362 | SvCUR_set(dstr, cur); | |
765f542d NC |
3363 | SvREADONLY_on(dstr); |
3364 | SvFAKE_on(dstr); | |
3365 | /* Relesase a global SV mutex. */ | |
3366 | } | |
3367 | else | |
765f542d | 3368 | { /* Passes the swipe test. */ |
78d1e721 | 3369 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
765f542d NC |
3370 | SvLEN_set(dstr, SvLEN(sstr)); |
3371 | SvCUR_set(dstr, SvCUR(sstr)); | |
3372 | ||
3373 | SvTEMP_off(dstr); | |
3374 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
3375 | SvPV_set(sstr, Nullch); | |
3376 | SvLEN_set(sstr, 0); | |
3377 | SvCUR_set(sstr, 0); | |
3378 | SvTEMP_off(sstr); | |
3379 | } | |
3380 | } | |
9aa983d2 | 3381 | if (sflags & SVf_UTF8) |
a7cb1f99 | 3382 | SvUTF8_on(dstr); |
8990e307 | 3383 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
3384 | SvNOKp_on(dstr); |
3385 | if (sflags & SVf_NOK) | |
3386 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 3387 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 | 3388 | } |
8990e307 | 3389 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
3390 | (void)SvIOKp_on(dstr); |
3391 | if (sflags & SVf_IOK) | |
3392 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 3393 | if (sflags & SVf_IVisUV) |
25da4f38 | 3394 | SvIsUV_on(dstr); |
45977657 | 3395 | SvIV_set(dstr, SvIVX(sstr)); |
79072805 | 3396 | } |
92f0c265 | 3397 | if (SvVOK(sstr)) { |
00b6aa41 | 3398 | const MAGIC * const smg = mg_find(sstr,PERL_MAGIC_vstring); |
ece467f9 JP |
3399 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, |
3400 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 3401 | SvRMAGICAL_on(dstr); |
7a5fa8a2 | 3402 | } |
79072805 | 3403 | } |
8990e307 | 3404 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
3405 | if (sflags & SVf_IOK) |
3406 | (void)SvIOK_only(dstr); | |
3407 | else { | |
9cbac4c7 DM |
3408 | (void)SvOK_off(dstr); |
3409 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
3410 | } |
3411 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 3412 | if (sflags & SVf_IVisUV) |
25da4f38 | 3413 | SvIsUV_on(dstr); |
45977657 | 3414 | SvIV_set(dstr, SvIVX(sstr)); |
3332b3c1 JH |
3415 | if (sflags & SVp_NOK) { |
3416 | if (sflags & SVf_NOK) | |
3417 | (void)SvNOK_on(dstr); | |
3418 | else | |
3419 | (void)SvNOKp_on(dstr); | |
9d6ce603 | 3420 | SvNV_set(dstr, SvNVX(sstr)); |
3332b3c1 JH |
3421 | } |
3422 | } | |
3423 | else if (sflags & SVp_NOK) { | |
3424 | if (sflags & SVf_NOK) | |
3425 | (void)SvNOK_only(dstr); | |
3426 | else { | |
9cbac4c7 | 3427 | (void)SvOK_off(dstr); |
3332b3c1 JH |
3428 | SvNOKp_on(dstr); |
3429 | } | |
9d6ce603 | 3430 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 LW |
3431 | } |
3432 | else { | |
20408e3c | 3433 | if (dtype == SVt_PVGV) { |
e476b1b5 | 3434 | if (ckWARN(WARN_MISC)) |
9014280d | 3435 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
3436 | } |
3437 | else | |
3438 | (void)SvOK_off(dstr); | |
a0d0e21e | 3439 | } |
27c9684d AP |
3440 | if (SvTAINTED(sstr)) |
3441 | SvTAINT(dstr); | |
79072805 LW |
3442 | } |
3443 | ||
954c1994 GS |
3444 | /* |
3445 | =for apidoc sv_setsv_mg | |
3446 | ||
3447 | Like C<sv_setsv>, but also handles 'set' magic. | |
3448 | ||
3449 | =cut | |
3450 | */ | |
3451 | ||
79072805 | 3452 | void |
864dbfa3 | 3453 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
3454 | { |
3455 | sv_setsv(dstr,sstr); | |
3456 | SvSETMAGIC(dstr); | |
3457 | } | |
3458 | ||
f8c7b90f | 3459 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
3460 | SV * |
3461 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
3462 | { | |
3463 | STRLEN cur = SvCUR(sstr); | |
3464 | STRLEN len = SvLEN(sstr); | |
3465 | register char *new_pv; | |
3466 | ||
3467 | if (DEBUG_C_TEST) { | |
3468 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
3469 | sstr, dstr); | |
3470 | sv_dump(sstr); | |
3471 | if (dstr) | |
3472 | sv_dump(dstr); | |
3473 | } | |
3474 | ||
3475 | if (dstr) { | |
3476 | if (SvTHINKFIRST(dstr)) | |
3477 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
3f7c398e SP |
3478 | else if (SvPVX_const(dstr)) |
3479 | Safefree(SvPVX_const(dstr)); | |
ed252734 NC |
3480 | } |
3481 | else | |
3482 | new_SV(dstr); | |
862a34c6 | 3483 | SvUPGRADE(dstr, SVt_PVIV); |
ed252734 NC |
3484 | |
3485 | assert (SvPOK(sstr)); | |
3486 | assert (SvPOKp(sstr)); | |
3487 | assert (!SvIOK(sstr)); | |
3488 | assert (!SvIOKp(sstr)); | |
3489 | assert (!SvNOK(sstr)); | |
3490 | assert (!SvNOKp(sstr)); | |
3491 | ||
3492 | if (SvIsCOW(sstr)) { | |
3493 | ||
3494 | if (SvLEN(sstr) == 0) { | |
3495 | /* source is a COW shared hash key. */ | |
ed252734 NC |
3496 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
3497 | "Fast copy on write: Sharing hash\n")); | |
d1db91c6 | 3498 | new_pv = HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)))); |
ed252734 NC |
3499 | goto common_exit; |
3500 | } | |
3501 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
3502 | } else { | |
3503 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
862a34c6 | 3504 | SvUPGRADE(sstr, SVt_PVIV); |
ed252734 NC |
3505 | SvREADONLY_on(sstr); |
3506 | SvFAKE_on(sstr); | |
3507 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
3508 | "Fast copy on write: Converting sstr to COW\n")); | |
3509 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
3510 | } | |
3511 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 3512 | new_pv = SvPVX_mutable(sstr); |
ed252734 NC |
3513 | |
3514 | common_exit: | |
3515 | SvPV_set(dstr, new_pv); | |
3516 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
3517 | if (SvUTF8(sstr)) | |
3518 | SvUTF8_on(dstr); | |
87a1ef3d SP |
3519 | SvLEN_set(dstr, len); |
3520 | SvCUR_set(dstr, cur); | |
ed252734 NC |
3521 | if (DEBUG_C_TEST) { |
3522 | sv_dump(dstr); | |
3523 | } | |
3524 | return dstr; | |
3525 | } | |
3526 | #endif | |
3527 | ||
954c1994 GS |
3528 | /* |
3529 | =for apidoc sv_setpvn | |
3530 | ||
3531 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
3532 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
3533 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
3534 | |
3535 | =cut | |
3536 | */ | |
3537 | ||
ef50df4b | 3538 | void |
864dbfa3 | 3539 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 3540 | { |
c6f8c383 | 3541 | register char *dptr; |
22c522df | 3542 | |
765f542d | 3543 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 3544 | if (!ptr) { |
a0d0e21e | 3545 | (void)SvOK_off(sv); |
463ee0b2 LW |
3546 | return; |
3547 | } | |
22c522df JH |
3548 | else { |
3549 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
a3b680e6 | 3550 | const IV iv = len; |
9c5ffd7c JH |
3551 | if (iv < 0) |
3552 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 3553 | } |
862a34c6 | 3554 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 3555 | |
5902b6a9 | 3556 | dptr = SvGROW(sv, len + 1); |
c6f8c383 GA |
3557 | Move(ptr,dptr,len,char); |
3558 | dptr[len] = '\0'; | |
79072805 | 3559 | SvCUR_set(sv, len); |
1aa99e6b | 3560 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 3561 | SvTAINT(sv); |
79072805 LW |
3562 | } |
3563 | ||
954c1994 GS |
3564 | /* |
3565 | =for apidoc sv_setpvn_mg | |
3566 | ||
3567 | Like C<sv_setpvn>, but also handles 'set' magic. | |
3568 | ||
3569 | =cut | |
3570 | */ | |
3571 | ||
79072805 | 3572 | void |
864dbfa3 | 3573 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
3574 | { |
3575 | sv_setpvn(sv,ptr,len); | |
3576 | SvSETMAGIC(sv); | |
3577 | } | |
3578 | ||
954c1994 GS |
3579 | /* |
3580 | =for apidoc sv_setpv | |
3581 | ||
3582 | Copies a string into an SV. The string must be null-terminated. Does not | |
3583 | handle 'set' magic. See C<sv_setpv_mg>. | |
3584 | ||
3585 | =cut | |
3586 | */ | |
3587 | ||
ef50df4b | 3588 | void |
864dbfa3 | 3589 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
3590 | { |
3591 | register STRLEN len; | |
3592 | ||
765f542d | 3593 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 3594 | if (!ptr) { |
a0d0e21e | 3595 | (void)SvOK_off(sv); |
463ee0b2 LW |
3596 | return; |
3597 | } | |
79072805 | 3598 | len = strlen(ptr); |
862a34c6 | 3599 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 3600 | |
79072805 | 3601 | SvGROW(sv, len + 1); |
463ee0b2 | 3602 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 3603 | SvCUR_set(sv, len); |
1aa99e6b | 3604 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
3605 | SvTAINT(sv); |
3606 | } | |
3607 | ||
954c1994 GS |
3608 | /* |
3609 | =for apidoc sv_setpv_mg | |
3610 | ||
3611 | Like C<sv_setpv>, but also handles 'set' magic. | |
3612 | ||
3613 | =cut | |
3614 | */ | |
3615 | ||
463ee0b2 | 3616 | void |
864dbfa3 | 3617 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
3618 | { |
3619 | sv_setpv(sv,ptr); | |
3620 | SvSETMAGIC(sv); | |
3621 | } | |
3622 | ||
954c1994 GS |
3623 | /* |
3624 | =for apidoc sv_usepvn | |
3625 | ||
3626 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 3627 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
3628 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
3629 | string length, C<len>, must be supplied. This function will realloc the | |
3630 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
3631 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
3632 | See C<sv_usepvn_mg>. | |
3633 | ||
3634 | =cut | |
3635 | */ | |
3636 | ||
ef50df4b | 3637 | void |
864dbfa3 | 3638 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 3639 | { |
1936d2a7 | 3640 | STRLEN allocate; |
765f542d | 3641 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
862a34c6 | 3642 | SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 3643 | if (!ptr) { |
a0d0e21e | 3644 | (void)SvOK_off(sv); |
463ee0b2 LW |
3645 | return; |
3646 | } | |
3f7c398e | 3647 | if (SvPVX_const(sv)) |
8bd4d4c5 | 3648 | SvPV_free(sv); |
1936d2a7 NC |
3649 | |
3650 | allocate = PERL_STRLEN_ROUNDUP(len + 1); | |
7a9b70e9 | 3651 | ptr = saferealloc (ptr, allocate); |
f880fe2f | 3652 | SvPV_set(sv, ptr); |
463ee0b2 | 3653 | SvCUR_set(sv, len); |
1936d2a7 | 3654 | SvLEN_set(sv, allocate); |
463ee0b2 | 3655 | *SvEND(sv) = '\0'; |
1aa99e6b | 3656 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 3657 | SvTAINT(sv); |
79072805 LW |
3658 | } |
3659 | ||
954c1994 GS |
3660 | /* |
3661 | =for apidoc sv_usepvn_mg | |
3662 | ||
3663 | Like C<sv_usepvn>, but also handles 'set' magic. | |
3664 | ||
3665 | =cut | |
3666 | */ | |
3667 | ||
ef50df4b | 3668 | void |
864dbfa3 | 3669 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 3670 | { |
51c1089b | 3671 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
3672 | SvSETMAGIC(sv); |
3673 | } | |
3674 | ||
f8c7b90f | 3675 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
3676 | /* Need to do this *after* making the SV normal, as we need the buffer |
3677 | pointer to remain valid until after we've copied it. If we let go too early, | |
3678 | another thread could invalidate it by unsharing last of the same hash key | |
3679 | (which it can do by means other than releasing copy-on-write Svs) | |
3680 | or by changing the other copy-on-write SVs in the loop. */ | |
3681 | STATIC void | |
bdd68bc3 | 3682 | S_sv_release_COW(pTHX_ register SV *sv, const char *pvx, STRLEN len, SV *after) |
765f542d NC |
3683 | { |
3684 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
3685 | /* we need to find the SV pointing to us. */ | |
aec46f14 | 3686 | SV * const current = SV_COW_NEXT_SV(after); |
7a5fa8a2 | 3687 | |
765f542d NC |
3688 | if (current == sv) { |
3689 | /* The SV we point to points back to us (there were only two of us | |
3690 | in the loop.) | |
3691 | Hence other SV is no longer copy on write either. */ | |
3692 | SvFAKE_off(after); | |
3693 | SvREADONLY_off(after); | |
3694 | } else { | |
3695 | /* We need to follow the pointers around the loop. */ | |
3696 | SV *next; | |
3697 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
3698 | assert (next); | |
3699 | current = next; | |
3700 | /* don't loop forever if the structure is bust, and we have | |
3701 | a pointer into a closed loop. */ | |
3702 | assert (current != after); | |
3f7c398e | 3703 | assert (SvPVX_const(current) == pvx); |
765f542d NC |
3704 | } |
3705 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 3706 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
3707 | } |
3708 | } else { | |
bdd68bc3 | 3709 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); |
765f542d NC |
3710 | } |
3711 | } | |
3712 | ||
3713 | int | |
3714 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
3715 | { | |
3716 | if (SvIsCOW(sv)) | |
3717 | sv_force_normal_flags(sv, 0); | |
0c34ef67 MHM |
3718 | SvOOK_off(sv); |
3719 | return 0; | |
765f542d NC |
3720 | } |
3721 | #endif | |
645c22ef DM |
3722 | /* |
3723 | =for apidoc sv_force_normal_flags | |
3724 | ||
3725 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
3726 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
3727 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
3728 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
3729 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
3730 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 3731 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
3732 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
3733 | with flags set to 0. | |
645c22ef DM |
3734 | |
3735 | =cut | |
3736 | */ | |
3737 | ||
6fc92669 | 3738 | void |
840a7b70 | 3739 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 3740 | { |
f8c7b90f | 3741 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
3742 | if (SvREADONLY(sv)) { |
3743 | /* At this point I believe I should acquire a global SV mutex. */ | |
3744 | if (SvFAKE(sv)) { | |
b64e5050 | 3745 | const char * const pvx = SvPVX_const(sv); |
a28509cc AL |
3746 | const STRLEN len = SvLEN(sv); |
3747 | const STRLEN cur = SvCUR(sv); | |
a28509cc | 3748 | SV * const next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ |
46187eeb NC |
3749 | if (DEBUG_C_TEST) { |
3750 | PerlIO_printf(Perl_debug_log, | |
3751 | "Copy on write: Force normal %ld\n", | |
3752 | (long) flags); | |
e419cbc5 | 3753 | sv_dump(sv); |
46187eeb | 3754 | } |
765f542d NC |
3755 | SvFAKE_off(sv); |
3756 | SvREADONLY_off(sv); | |
9f653bb5 | 3757 | /* This SV doesn't own the buffer, so need to Newx() a new one: */ |
f880fe2f | 3758 | SvPV_set(sv, (char*)0); |
87a1ef3d | 3759 | SvLEN_set(sv, 0); |
765f542d NC |
3760 | if (flags & SV_COW_DROP_PV) { |
3761 | /* OK, so we don't need to copy our buffer. */ | |
3762 | SvPOK_off(sv); | |
3763 | } else { | |
3764 | SvGROW(sv, cur + 1); | |
3765 | Move(pvx,SvPVX(sv),cur,char); | |
87a1ef3d | 3766 | SvCUR_set(sv, cur); |
765f542d NC |
3767 | *SvEND(sv) = '\0'; |
3768 | } | |
bdd68bc3 | 3769 | sv_release_COW(sv, pvx, len, next); |
46187eeb | 3770 | if (DEBUG_C_TEST) { |
e419cbc5 | 3771 | sv_dump(sv); |
46187eeb | 3772 | } |
765f542d | 3773 | } |
923e4eb5 | 3774 | else if (IN_PERL_RUNTIME) |
765f542d NC |
3775 | Perl_croak(aTHX_ PL_no_modify); |
3776 | /* At this point I believe that I can drop the global SV mutex. */ | |
3777 | } | |
3778 | #else | |
2213622d | 3779 | if (SvREADONLY(sv)) { |
1c846c1f | 3780 | if (SvFAKE(sv)) { |
b64e5050 | 3781 | const char * const pvx = SvPVX_const(sv); |
66a1b24b | 3782 | const STRLEN len = SvCUR(sv); |
10bcdfd6 NC |
3783 | SvFAKE_off(sv); |
3784 | SvREADONLY_off(sv); | |
66a1b24b AL |
3785 | SvPV_set(sv, Nullch); |
3786 | SvLEN_set(sv, 0); | |
1c846c1f | 3787 | SvGROW(sv, len + 1); |
706aa1c9 | 3788 | Move(pvx,SvPVX(sv),len,char); |
1c846c1f | 3789 | *SvEND(sv) = '\0'; |
bdd68bc3 | 3790 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); |
1c846c1f | 3791 | } |
923e4eb5 | 3792 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 3793 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 3794 | } |
765f542d | 3795 | #endif |
2213622d | 3796 | if (SvROK(sv)) |
840a7b70 | 3797 | sv_unref_flags(sv, flags); |
6fc92669 GS |
3798 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
3799 | sv_unglob(sv); | |
0f15f207 | 3800 | } |
1c846c1f | 3801 | |
645c22ef | 3802 | /* |
954c1994 GS |
3803 | =for apidoc sv_chop |
3804 | ||
1c846c1f | 3805 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
3806 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
3807 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 3808 | string. Uses the "OOK hack". |
3f7c398e | 3809 | Beware: after this function returns, C<ptr> and SvPVX_const(sv) may no longer |
31869a79 | 3810 | refer to the same chunk of data. |
954c1994 GS |
3811 | |
3812 | =cut | |
3813 | */ | |
3814 | ||
79072805 | 3815 | void |
f54cb97a | 3816 | Perl_sv_chop(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
3817 | { |
3818 | register STRLEN delta; | |
a0d0e21e | 3819 | if (!ptr || !SvPOKp(sv)) |
79072805 | 3820 | return; |
3f7c398e | 3821 | delta = ptr - SvPVX_const(sv); |
2213622d | 3822 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
3823 | if (SvTYPE(sv) < SVt_PVIV) |
3824 | sv_upgrade(sv,SVt_PVIV); | |
3825 | ||
3826 | if (!SvOOK(sv)) { | |
50483b2c | 3827 | if (!SvLEN(sv)) { /* make copy of shared string */ |
3f7c398e | 3828 | const char *pvx = SvPVX_const(sv); |
a28509cc | 3829 | const STRLEN len = SvCUR(sv); |
50483b2c | 3830 | SvGROW(sv, len + 1); |
706aa1c9 | 3831 | Move(pvx,SvPVX(sv),len,char); |
50483b2c JD |
3832 | *SvEND(sv) = '\0'; |
3833 | } | |
45977657 | 3834 | SvIV_set(sv, 0); |
a4bfb290 AB |
3835 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
3836 | and we do that anyway inside the SvNIOK_off | |
3837 | */ | |
7a5fa8a2 | 3838 | SvFLAGS(sv) |= SVf_OOK; |
79072805 | 3839 | } |
a4bfb290 | 3840 | SvNIOK_off(sv); |
b162af07 SP |
3841 | SvLEN_set(sv, SvLEN(sv) - delta); |
3842 | SvCUR_set(sv, SvCUR(sv) - delta); | |
f880fe2f | 3843 | SvPV_set(sv, SvPVX(sv) + delta); |
45977657 | 3844 | SvIV_set(sv, SvIVX(sv) + delta); |
79072805 LW |
3845 | } |
3846 | ||
954c1994 GS |
3847 | /* |
3848 | =for apidoc sv_catpvn | |
3849 | ||
3850 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
3851 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
3852 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 3853 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 3854 | |
8d6d96c1 HS |
3855 | =for apidoc sv_catpvn_flags |
3856 | ||
3857 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
3858 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
3859 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
3860 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
3861 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
3862 | in terms of this function. | |
3863 | ||
3864 | =cut | |
3865 | */ | |
3866 | ||
3867 | void | |
3868 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
3869 | { | |
3870 | STRLEN dlen; | |
f54cb97a | 3871 | const char *dstr = SvPV_force_flags(dsv, dlen, flags); |
8d6d96c1 | 3872 | |
8d6d96c1 HS |
3873 | SvGROW(dsv, dlen + slen + 1); |
3874 | if (sstr == dstr) | |
3f7c398e | 3875 | sstr = SvPVX_const(dsv); |
8d6d96c1 | 3876 | Move(sstr, SvPVX(dsv) + dlen, slen, char); |
b162af07 | 3877 | SvCUR_set(dsv, SvCUR(dsv) + slen); |
8d6d96c1 HS |
3878 | *SvEND(dsv) = '\0'; |
3879 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
3880 | SvTAINT(dsv); | |
bddd5118 NC |
3881 | if (flags & SV_SMAGIC) |
3882 | SvSETMAGIC(dsv); | |
79072805 LW |
3883 | } |
3884 | ||
954c1994 | 3885 | /* |
954c1994 GS |
3886 | =for apidoc sv_catsv |
3887 | ||
13e8c8e3 JH |
3888 | Concatenates the string from SV C<ssv> onto the end of the string in |
3889 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
3890 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 3891 | |
8d6d96c1 HS |
3892 | =for apidoc sv_catsv_flags |
3893 | ||
3894 | Concatenates the string from SV C<ssv> onto the end of the string in | |
3895 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
3896 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
3897 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
3898 | ||
3899 | =cut */ | |
3900 | ||
ef50df4b | 3901 | void |
8d6d96c1 | 3902 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 3903 | { |
bddd5118 | 3904 | if (ssv) { |
00b6aa41 AL |
3905 | STRLEN slen; |
3906 | const char *spv = SvPV_const(ssv, slen); | |
3907 | if (spv) { | |
bddd5118 NC |
3908 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
3909 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
3910 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously | |
3911 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
3912 | dsv->sv_flags doesn't have that bit set. | |
4fd84b44 | 3913 | Andy Dougherty 12 Oct 2001 |
bddd5118 NC |
3914 | */ |
3915 | const I32 sutf8 = DO_UTF8(ssv); | |
3916 | I32 dutf8; | |
13e8c8e3 | 3917 | |
bddd5118 NC |
3918 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
3919 | mg_get(dsv); | |
3920 | dutf8 = DO_UTF8(dsv); | |
8d6d96c1 | 3921 | |
bddd5118 NC |
3922 | if (dutf8 != sutf8) { |
3923 | if (dutf8) { | |
3924 | /* Not modifying source SV, so taking a temporary copy. */ | |
00b6aa41 | 3925 | SV* const csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 3926 | |
bddd5118 NC |
3927 | sv_utf8_upgrade(csv); |
3928 | spv = SvPV_const(csv, slen); | |
3929 | } | |
3930 | else | |
3931 | sv_utf8_upgrade_nomg(dsv); | |
13e8c8e3 | 3932 | } |
bddd5118 | 3933 | sv_catpvn_nomg(dsv, spv, slen); |
e84ff256 | 3934 | } |
560a288e | 3935 | } |
bddd5118 NC |
3936 | if (flags & SV_SMAGIC) |
3937 | SvSETMAGIC(dsv); | |
79072805 LW |
3938 | } |
3939 | ||
954c1994 | 3940 | /* |
954c1994 GS |
3941 | =for apidoc sv_catpv |
3942 | ||
3943 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
3944 | If the SV has the UTF-8 status set, then the bytes appended should be |
3945 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 3946 | |
d5ce4a7c | 3947 | =cut */ |
954c1994 | 3948 | |
ef50df4b | 3949 | void |
0c981600 | 3950 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
3951 | { |
3952 | register STRLEN len; | |
463ee0b2 | 3953 | STRLEN tlen; |
748a9306 | 3954 | char *junk; |
79072805 | 3955 | |
0c981600 | 3956 | if (!ptr) |
79072805 | 3957 | return; |
748a9306 | 3958 | junk = SvPV_force(sv, tlen); |
0c981600 | 3959 | len = strlen(ptr); |
463ee0b2 | 3960 | SvGROW(sv, tlen + len + 1); |
0c981600 | 3961 | if (ptr == junk) |
3f7c398e | 3962 | ptr = SvPVX_const(sv); |
0c981600 | 3963 | Move(ptr,SvPVX(sv)+tlen,len+1,char); |
b162af07 | 3964 | SvCUR_set(sv, SvCUR(sv) + len); |
d41ff1b8 | 3965 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 3966 | SvTAINT(sv); |
79072805 LW |
3967 | } |
3968 | ||
954c1994 GS |
3969 | /* |
3970 | =for apidoc sv_catpv_mg | |
3971 | ||
3972 | Like C<sv_catpv>, but also handles 'set' magic. | |
3973 | ||
3974 | =cut | |
3975 | */ | |
3976 | ||
ef50df4b | 3977 | void |
0c981600 | 3978 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 3979 | { |
0c981600 | 3980 | sv_catpv(sv,ptr); |
ef50df4b GS |
3981 | SvSETMAGIC(sv); |
3982 | } | |
3983 | ||
645c22ef DM |
3984 | /* |
3985 | =for apidoc newSV | |
3986 | ||
3987 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
3988 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
3989 | macro. | |
3990 | ||
3991 | =cut | |
3992 | */ | |
3993 | ||
79072805 | 3994 | SV * |
864dbfa3 | 3995 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
3996 | { |
3997 | register SV *sv; | |
1c846c1f | 3998 | |
4561caa4 | 3999 | new_SV(sv); |
79072805 LW |
4000 | if (len) { |
4001 | sv_upgrade(sv, SVt_PV); | |
4002 | SvGROW(sv, len + 1); | |
4003 | } | |
4004 | return sv; | |
4005 | } | |
954c1994 | 4006 | /* |
92110913 | 4007 | =for apidoc sv_magicext |
954c1994 | 4008 | |
68795e93 | 4009 | Adds magic to an SV, upgrading it if necessary. Applies the |
2d8d5d5a | 4010 | supplied vtable and returns a pointer to the magic added. |
92110913 | 4011 | |
2d8d5d5a SH |
4012 | Note that C<sv_magicext> will allow things that C<sv_magic> will not. |
4013 | In particular, you can add magic to SvREADONLY SVs, and add more than | |
4014 | one instance of the same 'how'. | |
645c22ef | 4015 | |
2d8d5d5a SH |
4016 | If C<namlen> is greater than zero then a C<savepvn> I<copy> of C<name> is |
4017 | stored, if C<namlen> is zero then C<name> is stored as-is and - as another | |
4018 | special case - if C<(name && namlen == HEf_SVKEY)> then C<name> is assumed | |
4019 | to contain an C<SV*> and is stored as-is with its REFCNT incremented. | |
92110913 | 4020 | |
2d8d5d5a | 4021 | (This is now used as a subroutine by C<sv_magic>.) |
954c1994 GS |
4022 | |
4023 | =cut | |
4024 | */ | |
92110913 | 4025 | MAGIC * |
e1ec3a88 | 4026 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, const MGVTBL *vtable, |
92110913 | 4027 | const char* name, I32 namlen) |
79072805 LW |
4028 | { |
4029 | MAGIC* mg; | |
68795e93 | 4030 | |
92110913 | 4031 | if (SvTYPE(sv) < SVt_PVMG) { |
862a34c6 | 4032 | SvUPGRADE(sv, SVt_PVMG); |
463ee0b2 | 4033 | } |
a02a5408 | 4034 | Newxz(mg, 1, MAGIC); |
79072805 | 4035 | mg->mg_moremagic = SvMAGIC(sv); |
b162af07 | 4036 | SvMAGIC_set(sv, mg); |
75f9d97a | 4037 | |
05f95b08 SB |
4038 | /* Sometimes a magic contains a reference loop, where the sv and |
4039 | object refer to each other. To prevent a reference loop that | |
4040 | would prevent such objects being freed, we look for such loops | |
4041 | and if we find one we avoid incrementing the object refcount. | |
87f0b213 JH |
4042 | |
4043 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 4044 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
4045 | |
4046 | */ | |
14befaf4 DM |
4047 | if (!obj || obj == sv || |
4048 | how == PERL_MAGIC_arylen || | |
4049 | how == PERL_MAGIC_qr || | |
8d2f4536 | 4050 | how == PERL_MAGIC_symtab || |
75f9d97a JH |
4051 | (SvTYPE(obj) == SVt_PVGV && |
4052 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
4053 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 4054 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 4055 | { |
8990e307 | 4056 | mg->mg_obj = obj; |
75f9d97a | 4057 | } |
85e6fe83 | 4058 | else { |
8990e307 | 4059 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
4060 | mg->mg_flags |= MGf_REFCOUNTED; |
4061 | } | |
b5ccf5f2 YST |
4062 | |
4063 | /* Normal self-ties simply pass a null object, and instead of | |
4064 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
4065 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
4066 | with an RV obj pointing to the glob containing the PVIO. In | |
4067 | this case, to avoid a reference loop, we need to weaken the | |
4068 | reference. | |
4069 | */ | |
4070 | ||
4071 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
4072 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
4073 | { | |
4074 | sv_rvweaken(obj); | |
4075 | } | |
4076 | ||
79072805 | 4077 | mg->mg_type = how; |
565764a8 | 4078 | mg->mg_len = namlen; |
9cbac4c7 | 4079 | if (name) { |
92110913 | 4080 | if (namlen > 0) |
1edc1566 | 4081 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 4082 | else if (namlen == HEf_SVKEY) |
1edc1566 | 4083 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 4084 | else |
92110913 | 4085 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 4086 | } |
92110913 | 4087 | mg->mg_virtual = vtable; |
68795e93 | 4088 | |
92110913 NIS |
4089 | mg_magical(sv); |
4090 | if (SvGMAGICAL(sv)) | |
4091 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
4092 | return mg; | |
4093 | } | |
4094 | ||
4095 | /* | |
4096 | =for apidoc sv_magic | |
1c846c1f | 4097 | |
92110913 NIS |
4098 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
4099 | then adds a new magic item of type C<how> to the head of the magic list. | |
4100 | ||
2d8d5d5a SH |
4101 | See C<sv_magicext> (which C<sv_magic> now calls) for a description of the |
4102 | handling of the C<name> and C<namlen> arguments. | |
4103 | ||
4509d3fb SB |
4104 | You need to use C<sv_magicext> to add magic to SvREADONLY SVs and also |
4105 | to add more than one instance of the same 'how'. | |
4106 | ||
92110913 NIS |
4107 | =cut |
4108 | */ | |
4109 | ||
4110 | void | |
4111 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 4112 | { |
aec46f14 | 4113 | const MGVTBL *vtable; |
92110913 | 4114 | MAGIC* mg; |
92110913 | 4115 | |
f8c7b90f | 4116 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4117 | if (SvIsCOW(sv)) |
4118 | sv_force_normal_flags(sv, 0); | |
4119 | #endif | |
92110913 | 4120 | if (SvREADONLY(sv)) { |
d8084ca5 DM |
4121 | if ( |
4122 | /* its okay to attach magic to shared strings; the subsequent | |
4123 | * upgrade to PVMG will unshare the string */ | |
4124 | !(SvFAKE(sv) && SvTYPE(sv) < SVt_PVMG) | |
4125 | ||
4126 | && IN_PERL_RUNTIME | |
92110913 NIS |
4127 | && how != PERL_MAGIC_regex_global |
4128 | && how != PERL_MAGIC_bm | |
4129 | && how != PERL_MAGIC_fm | |
4130 | && how != PERL_MAGIC_sv | |
e6469971 | 4131 | && how != PERL_MAGIC_backref |
92110913 NIS |
4132 | ) |
4133 | { | |
4134 | Perl_croak(aTHX_ PL_no_modify); | |
4135 | } | |
4136 | } | |
4137 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
4138 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
4139 | /* sv_magic() refuses to add a magic of the same 'how' as an |
4140 | existing one | |
92110913 NIS |
4141 | */ |
4142 | if (how == PERL_MAGIC_taint) | |
4143 | mg->mg_len |= 1; | |
4144 | return; | |
4145 | } | |
4146 | } | |
68795e93 | 4147 | |
79072805 | 4148 | switch (how) { |
14befaf4 | 4149 | case PERL_MAGIC_sv: |
92110913 | 4150 | vtable = &PL_vtbl_sv; |
79072805 | 4151 | break; |
14befaf4 | 4152 | case PERL_MAGIC_overload: |
92110913 | 4153 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 4154 | break; |
14befaf4 | 4155 | case PERL_MAGIC_overload_elem: |
92110913 | 4156 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 4157 | break; |
14befaf4 | 4158 | case PERL_MAGIC_overload_table: |
92110913 | 4159 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 4160 | break; |
14befaf4 | 4161 | case PERL_MAGIC_bm: |
92110913 | 4162 | vtable = &PL_vtbl_bm; |
79072805 | 4163 | break; |
14befaf4 | 4164 | case PERL_MAGIC_regdata: |
92110913 | 4165 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 4166 | break; |
14befaf4 | 4167 | case PERL_MAGIC_regdatum: |
92110913 | 4168 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 4169 | break; |
14befaf4 | 4170 | case PERL_MAGIC_env: |
92110913 | 4171 | vtable = &PL_vtbl_env; |
79072805 | 4172 | break; |
14befaf4 | 4173 | case PERL_MAGIC_fm: |
92110913 | 4174 | vtable = &PL_vtbl_fm; |
55497cff | 4175 | break; |
14befaf4 | 4176 | case PERL_MAGIC_envelem: |
92110913 | 4177 | vtable = &PL_vtbl_envelem; |
79072805 | 4178 | break; |
14befaf4 | 4179 | case PERL_MAGIC_regex_global: |
92110913 | 4180 | vtable = &PL_vtbl_mglob; |
93a17b20 | 4181 | break; |
14befaf4 | 4182 | case PERL_MAGIC_isa: |
92110913 | 4183 | vtable = &PL_vtbl_isa; |
463ee0b2 | 4184 | break; |
14befaf4 | 4185 | case PERL_MAGIC_isaelem: |
92110913 | 4186 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 4187 | break; |
14befaf4 | 4188 | case PERL_MAGIC_nkeys: |
92110913 | 4189 | vtable = &PL_vtbl_nkeys; |
16660edb | 4190 | break; |
14befaf4 | 4191 | case PERL_MAGIC_dbfile: |
aec46f14 | 4192 | vtable = NULL; |
93a17b20 | 4193 | break; |
14befaf4 | 4194 | case PERL_MAGIC_dbline: |
92110913 | 4195 | vtable = &PL_vtbl_dbline; |
79072805 | 4196 | break; |
36477c24 | 4197 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 4198 | case PERL_MAGIC_collxfrm: |
92110913 | 4199 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 4200 | break; |
36477c24 | 4201 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 4202 | case PERL_MAGIC_tied: |
92110913 | 4203 | vtable = &PL_vtbl_pack; |
463ee0b2 | 4204 | break; |
14befaf4 DM |
4205 | case PERL_MAGIC_tiedelem: |
4206 | case PERL_MAGIC_tiedscalar: | |
92110913 | 4207 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 4208 | break; |
14befaf4 | 4209 | case PERL_MAGIC_qr: |
92110913 | 4210 | vtable = &PL_vtbl_regexp; |
c277df42 | 4211 | break; |
14befaf4 | 4212 | case PERL_MAGIC_sig: |
92110913 | 4213 | vtable = &PL_vtbl_sig; |
79072805 | 4214 | break; |
14befaf4 | 4215 | case PERL_MAGIC_sigelem: |
92110913 | 4216 | vtable = &PL_vtbl_sigelem; |
79072805 | 4217 | break; |
14befaf4 | 4218 | case PERL_MAGIC_taint: |
92110913 | 4219 | vtable = &PL_vtbl_taint; |
463ee0b2 | 4220 | break; |
14befaf4 | 4221 | case PERL_MAGIC_uvar: |
92110913 | 4222 | vtable = &PL_vtbl_uvar; |
79072805 | 4223 | break; |
14befaf4 | 4224 | case PERL_MAGIC_vec: |
92110913 | 4225 | vtable = &PL_vtbl_vec; |
79072805 | 4226 | break; |
a3874608 | 4227 | case PERL_MAGIC_arylen_p: |
bfcb3514 | 4228 | case PERL_MAGIC_rhash: |
8d2f4536 | 4229 | case PERL_MAGIC_symtab: |
ece467f9 | 4230 | case PERL_MAGIC_vstring: |
aec46f14 | 4231 | vtable = NULL; |
ece467f9 | 4232 | break; |
7e8c5dac HS |
4233 | case PERL_MAGIC_utf8: |
4234 | vtable = &PL_vtbl_utf8; | |
4235 | break; | |
14befaf4 | 4236 | case PERL_MAGIC_substr: |
92110913 | 4237 | vtable = &PL_vtbl_substr; |
79072805 | 4238 | break; |
14befaf4 | 4239 | case PERL_MAGIC_defelem: |
92110913 | 4240 | vtable = &PL_vtbl_defelem; |
5f05dabc | 4241 | break; |
14befaf4 | 4242 | case PERL_MAGIC_glob: |
92110913 | 4243 | vtable = &PL_vtbl_glob; |
79072805 | 4244 | break; |
14befaf4 | 4245 | case PERL_MAGIC_arylen: |
92110913 | 4246 | vtable = &PL_vtbl_arylen; |
79072805 | 4247 | break; |
14befaf4 | 4248 | case PERL_MAGIC_pos: |
92110913 | 4249 | vtable = &PL_vtbl_pos; |
a0d0e21e | 4250 | break; |
14befaf4 | 4251 | case PERL_MAGIC_backref: |
92110913 | 4252 | vtable = &PL_vtbl_backref; |
810b8aa5 | 4253 | break; |
14befaf4 DM |
4254 | case PERL_MAGIC_ext: |
4255 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
4256 | /* Useful for attaching extension internal data to perl vars. */ |
4257 | /* Note that multiple extensions may clash if magical scalars */ | |
4258 | /* etc holding private data from one are passed to another. */ | |
aec46f14 | 4259 | vtable = NULL; |
a0d0e21e | 4260 | break; |
79072805 | 4261 | default: |
14befaf4 | 4262 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 4263 | } |
68795e93 | 4264 | |
92110913 | 4265 | /* Rest of work is done else where */ |
aec46f14 | 4266 | mg = sv_magicext(sv,obj,how,vtable,name,namlen); |
68795e93 | 4267 | |
92110913 NIS |
4268 | switch (how) { |
4269 | case PERL_MAGIC_taint: | |
4270 | mg->mg_len = 1; | |
4271 | break; | |
4272 | case PERL_MAGIC_ext: | |
4273 | case PERL_MAGIC_dbfile: | |
4274 | SvRMAGICAL_on(sv); | |
4275 | break; | |
4276 | } | |
463ee0b2 LW |
4277 | } |
4278 | ||
c461cf8f JH |
4279 | /* |
4280 | =for apidoc sv_unmagic | |
4281 | ||
645c22ef | 4282 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
4283 | |
4284 | =cut | |
4285 | */ | |
4286 | ||
463ee0b2 | 4287 | int |
864dbfa3 | 4288 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
4289 | { |
4290 | MAGIC* mg; | |
4291 | MAGIC** mgp; | |
91bba347 | 4292 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
4293 | return 0; |
4294 | mgp = &SvMAGIC(sv); | |
4295 | for (mg = *mgp; mg; mg = *mgp) { | |
4296 | if (mg->mg_type == type) { | |
e1ec3a88 | 4297 | const MGVTBL* const vtbl = mg->mg_virtual; |
463ee0b2 | 4298 | *mgp = mg->mg_moremagic; |
1d7c1841 | 4299 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 4300 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 4301 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 4302 | if (mg->mg_len > 0) |
1edc1566 | 4303 | Safefree(mg->mg_ptr); |
565764a8 | 4304 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 4305 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
4306 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
4307 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 4308 | } |
a0d0e21e LW |
4309 | if (mg->mg_flags & MGf_REFCOUNTED) |
4310 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
4311 | Safefree(mg); |
4312 | } | |
4313 | else | |
4314 | mgp = &mg->mg_moremagic; | |
79072805 | 4315 | } |
91bba347 | 4316 | if (!SvMAGIC(sv)) { |
463ee0b2 | 4317 | SvMAGICAL_off(sv); |
06759ea0 | 4318 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
4319 | } |
4320 | ||
4321 | return 0; | |
79072805 LW |
4322 | } |
4323 | ||
c461cf8f JH |
4324 | /* |
4325 | =for apidoc sv_rvweaken | |
4326 | ||
645c22ef DM |
4327 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
4328 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
4329 | push a back-reference to this RV onto the array of backreferences | |
4330 | associated with that magic. | |
c461cf8f JH |
4331 | |
4332 | =cut | |
4333 | */ | |
4334 | ||
810b8aa5 | 4335 | SV * |
864dbfa3 | 4336 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
4337 | { |
4338 | SV *tsv; | |
4339 | if (!SvOK(sv)) /* let undefs pass */ | |
4340 | return sv; | |
4341 | if (!SvROK(sv)) | |
cea2e8a9 | 4342 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 4343 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 4344 | if (ckWARN(WARN_MISC)) |
9014280d | 4345 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
4346 | return sv; |
4347 | } | |
4348 | tsv = SvRV(sv); | |
e15faf7d | 4349 | Perl_sv_add_backref(aTHX_ tsv, sv); |
810b8aa5 | 4350 | SvWEAKREF_on(sv); |
1c846c1f | 4351 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
4352 | return sv; |
4353 | } | |
4354 | ||
645c22ef DM |
4355 | /* Give tsv backref magic if it hasn't already got it, then push a |
4356 | * back-reference to sv onto the array associated with the backref magic. | |
4357 | */ | |
4358 | ||
e15faf7d NC |
4359 | void |
4360 | Perl_sv_add_backref(pTHX_ SV *tsv, SV *sv) | |
810b8aa5 GS |
4361 | { |
4362 | AV *av; | |
4363 | MAGIC *mg; | |
14befaf4 | 4364 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
4365 | av = (AV*)mg->mg_obj; |
4366 | else { | |
4367 | av = newAV(); | |
14befaf4 | 4368 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
d99b02a1 DM |
4369 | /* av now has a refcnt of 2, which avoids it getting freed |
4370 | * before us during global cleanup. The extra ref is removed | |
4371 | * by magic_killbackrefs() when tsv is being freed */ | |
810b8aa5 | 4372 | } |
d91d49e8 | 4373 | if (AvFILLp(av) >= AvMAX(av)) { |
d91d49e8 MM |
4374 | av_extend(av, AvFILLp(av)+1); |
4375 | } | |
4376 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
4377 | } |
4378 | ||
645c22ef DM |
4379 | /* delete a back-reference to ourselves from the backref magic associated |
4380 | * with the SV we point to. | |
4381 | */ | |
4382 | ||
1c846c1f | 4383 | STATIC void |
e15faf7d | 4384 | S_sv_del_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
4385 | { |
4386 | AV *av; | |
4387 | SV **svp; | |
4388 | I32 i; | |
c04a4dfe | 4389 | MAGIC *mg = NULL; |
e15faf7d NC |
4390 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) { |
4391 | if (PL_in_clean_all) | |
4392 | return; | |
4393 | } | |
14befaf4 | 4394 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 4395 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
4396 | av = (AV *)mg->mg_obj; |
4397 | svp = AvARRAY(av); | |
6a76db8b NC |
4398 | /* We shouldn't be in here more than once, but for paranoia reasons lets |
4399 | not assume this. */ | |
4400 | for (i = AvFILLp(av); i >= 0; i--) { | |
4401 | if (svp[i] == sv) { | |
4402 | const SSize_t fill = AvFILLp(av); | |
4403 | if (i != fill) { | |
4404 | /* We weren't the last entry. | |
4405 | An unordered list has this property that you can take the | |
4406 | last element off the end to fill the hole, and it's still | |
4407 | an unordered list :-) | |
4408 | */ | |
4409 | svp[i] = svp[fill]; | |
4410 | } | |
4411 | svp[fill] = Nullsv; | |
4412 | AvFILLp(av) = fill - 1; | |
4413 | } | |
4414 | } | |
810b8aa5 GS |
4415 | } |
4416 | ||
954c1994 GS |
4417 | /* |
4418 | =for apidoc sv_insert | |
4419 | ||
4420 | Inserts a string at the specified offset/length within the SV. Similar to | |
4421 | the Perl substr() function. | |
4422 | ||
4423 | =cut | |
4424 | */ | |
4425 | ||
79072805 | 4426 | void |
e1ec3a88 | 4427 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, const char *little, STRLEN littlelen) |
79072805 LW |
4428 | { |
4429 | register char *big; | |
4430 | register char *mid; | |
4431 | register char *midend; | |
4432 | register char *bigend; | |
4433 | register I32 i; | |
6ff81951 | 4434 | STRLEN curlen; |
1c846c1f | 4435 | |
79072805 | 4436 | |
8990e307 | 4437 | if (!bigstr) |
cea2e8a9 | 4438 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 4439 | SvPV_force(bigstr, curlen); |
60fa28ff | 4440 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
4441 | if (offset + len > curlen) { |
4442 | SvGROW(bigstr, offset+len+1); | |
93524f2b | 4443 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); |
6ff81951 GS |
4444 | SvCUR_set(bigstr, offset+len); |
4445 | } | |
79072805 | 4446 | |
69b47968 | 4447 | SvTAINT(bigstr); |
79072805 LW |
4448 | i = littlelen - len; |
4449 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 4450 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
4451 | mid = big + offset + len; |
4452 | midend = bigend = big + SvCUR(bigstr); | |
4453 | bigend += i; | |
4454 | *bigend = '\0'; | |
4455 | while (midend > mid) /* shove everything down */ | |
4456 | *--bigend = *--midend; | |
4457 | Move(little,big+offset,littlelen,char); | |
b162af07 | 4458 | SvCUR_set(bigstr, SvCUR(bigstr) + i); |
79072805 LW |
4459 | SvSETMAGIC(bigstr); |
4460 | return; | |
4461 | } | |
4462 | else if (i == 0) { | |
463ee0b2 | 4463 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
4464 | SvSETMAGIC(bigstr); |
4465 | return; | |
4466 | } | |
4467 | ||
463ee0b2 | 4468 | big = SvPVX(bigstr); |
79072805 LW |
4469 | mid = big + offset; |
4470 | midend = mid + len; | |
4471 | bigend = big + SvCUR(bigstr); | |
4472 | ||
4473 | if (midend > bigend) | |
cea2e8a9 | 4474 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
4475 | |
4476 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
4477 | if (littlelen) { | |
4478 | Move(little, mid, littlelen,char); | |
4479 | mid += littlelen; | |
4480 | } | |
4481 | i = bigend - midend; | |
4482 | if (i > 0) { | |
4483 | Move(midend, mid, i,char); | |
4484 | mid += i; | |
4485 | } | |
4486 | *mid = '\0'; | |
4487 | SvCUR_set(bigstr, mid - big); | |
4488 | } | |
155aba94 | 4489 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
4490 | midend -= littlelen; |
4491 | mid = midend; | |
4492 | sv_chop(bigstr,midend-i); | |
4493 | big += i; | |
4494 | while (i--) | |
4495 | *--midend = *--big; | |
4496 | if (littlelen) | |
4497 | Move(little, mid, littlelen,char); | |
4498 | } | |
4499 | else if (littlelen) { | |
4500 | midend -= littlelen; | |
4501 | sv_chop(bigstr,midend); | |
4502 | Move(little,midend,littlelen,char); | |
4503 | } | |
4504 | else { | |
4505 | sv_chop(bigstr,midend); | |
4506 | } | |
4507 | SvSETMAGIC(bigstr); | |
4508 | } | |
4509 | ||
c461cf8f JH |
4510 | /* |
4511 | =for apidoc sv_replace | |
4512 | ||
4513 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
4514 | The target SV physically takes over ownership of the body of the source SV |
4515 | and inherits its flags; however, the target keeps any magic it owns, | |
4516 | and any magic in the source is discarded. | |
ff276b08 | 4517 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 4518 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
4519 | |
4520 | =cut | |
4521 | */ | |
79072805 LW |
4522 | |
4523 | void | |
864dbfa3 | 4524 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 | 4525 | { |
a3b680e6 | 4526 | const U32 refcnt = SvREFCNT(sv); |
765f542d | 4527 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
30e5c352 | 4528 | if (SvREFCNT(nsv) != 1) { |
7437becc | 4529 | Perl_croak(aTHX_ "panic: reference miscount on nsv in sv_replace() (%" |
30e5c352 NC |
4530 | UVuf " != 1)", (UV) SvREFCNT(nsv)); |
4531 | } | |
93a17b20 | 4532 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
4533 | if (SvMAGICAL(nsv)) |
4534 | mg_free(nsv); | |
4535 | else | |
4536 | sv_upgrade(nsv, SVt_PVMG); | |
b162af07 | 4537 | SvMAGIC_set(nsv, SvMAGIC(sv)); |
a0d0e21e | 4538 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 | 4539 | SvMAGICAL_off(sv); |
b162af07 | 4540 | SvMAGIC_set(sv, NULL); |
93a17b20 | 4541 | } |
79072805 LW |
4542 | SvREFCNT(sv) = 0; |
4543 | sv_clear(sv); | |
477f5d66 | 4544 | assert(!SvREFCNT(sv)); |
fd0854ff DM |
4545 | #ifdef DEBUG_LEAKING_SCALARS |
4546 | sv->sv_flags = nsv->sv_flags; | |
4547 | sv->sv_any = nsv->sv_any; | |
4548 | sv->sv_refcnt = nsv->sv_refcnt; | |
f34d0642 | 4549 | sv->sv_u = nsv->sv_u; |
fd0854ff | 4550 | #else |
79072805 | 4551 | StructCopy(nsv,sv,SV); |
fd0854ff | 4552 | #endif |
7b2c381c NC |
4553 | /* Currently could join these into one piece of pointer arithmetic, but |
4554 | it would be unclear. */ | |
4555 | if(SvTYPE(sv) == SVt_IV) | |
4556 | SvANY(sv) | |
339049b0 | 4557 | = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
7b2c381c | 4558 | else if (SvTYPE(sv) == SVt_RV) { |
339049b0 | 4559 | SvANY(sv) = &sv->sv_u.svu_rv; |
7b2c381c NC |
4560 | } |
4561 | ||
fd0854ff | 4562 | |
f8c7b90f | 4563 | #ifdef PERL_OLD_COPY_ON_WRITE |
d3d0e6f1 NC |
4564 | if (SvIsCOW_normal(nsv)) { |
4565 | /* We need to follow the pointers around the loop to make the | |
4566 | previous SV point to sv, rather than nsv. */ | |
4567 | SV *next; | |
4568 | SV *current = nsv; | |
4569 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
4570 | assert(next); | |
4571 | current = next; | |
3f7c398e | 4572 | assert(SvPVX_const(current) == SvPVX_const(nsv)); |
d3d0e6f1 NC |
4573 | } |
4574 | /* Make the SV before us point to the SV after us. */ | |
4575 | if (DEBUG_C_TEST) { | |
4576 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
4577 | sv_dump(current); | |
a29f6d03 NC |
4578 | PerlIO_printf(Perl_debug_log, |
4579 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
4580 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
4581 | } | |
a29f6d03 | 4582 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
4583 | } |
4584 | #endif | |
79072805 | 4585 | SvREFCNT(sv) = refcnt; |
1edc1566 | 4586 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 4587 | SvREFCNT(nsv) = 0; |
463ee0b2 | 4588 | del_SV(nsv); |
79072805 LW |
4589 | } |
4590 | ||
c461cf8f JH |
4591 | /* |
4592 | =for apidoc sv_clear | |
4593 | ||
645c22ef DM |
4594 | Clear an SV: call any destructors, free up any memory used by the body, |
4595 | and free the body itself. The SV's head is I<not> freed, although | |
4596 | its type is set to all 1's so that it won't inadvertently be assumed | |
4597 | to be live during global destruction etc. | |
4598 | This function should only be called when REFCNT is zero. Most of the time | |
4599 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
4600 | instead. | |
c461cf8f JH |
4601 | |
4602 | =cut | |
4603 | */ | |
4604 | ||
79072805 | 4605 | void |
864dbfa3 | 4606 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 4607 | { |
27da23d5 | 4608 | dVAR; |
82bb6deb | 4609 | const U32 type = SvTYPE(sv); |
8edfc514 NC |
4610 | const struct body_details *const sv_type_details |
4611 | = bodies_by_type + type; | |
82bb6deb | 4612 | |
79072805 LW |
4613 | assert(sv); |
4614 | assert(SvREFCNT(sv) == 0); | |
4615 | ||
82bb6deb NC |
4616 | if (type <= SVt_IV) |
4617 | return; | |
4618 | ||
ed6116ce | 4619 | if (SvOBJECT(sv)) { |
3280af22 | 4620 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 4621 | dSP; |
893645bd | 4622 | HV* stash; |
d460ef45 | 4623 | do { |
b464bac0 | 4624 | CV* destructor; |
4e8e7886 | 4625 | stash = SvSTASH(sv); |
32251b26 | 4626 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 4627 | if (destructor) { |
1b6737cc | 4628 | SV* const tmpref = newRV(sv); |
5cc433a6 | 4629 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ |
4e8e7886 | 4630 | ENTER; |
e788e7d3 | 4631 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
4632 | EXTEND(SP, 2); |
4633 | PUSHMARK(SP); | |
5cc433a6 | 4634 | PUSHs(tmpref); |
4e8e7886 | 4635 | PUTBACK; |
44389ee9 | 4636 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
7a5fa8a2 NIS |
4637 | |
4638 | ||
d3acc0f7 | 4639 | POPSTACK; |
3095d977 | 4640 | SPAGAIN; |
4e8e7886 | 4641 | LEAVE; |
5cc433a6 AB |
4642 | if(SvREFCNT(tmpref) < 2) { |
4643 | /* tmpref is not kept alive! */ | |
4644 | SvREFCNT(sv)--; | |
b162af07 | 4645 | SvRV_set(tmpref, NULL); |
5cc433a6 AB |
4646 | SvROK_off(tmpref); |
4647 | } | |
4648 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
4649 | } |
4650 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 4651 | |
6f44e0a4 JP |
4652 | |
4653 | if (SvREFCNT(sv)) { | |
4654 | if (PL_in_clean_objs) | |
cea2e8a9 | 4655 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
bfcb3514 | 4656 | HvNAME_get(stash)); |
6f44e0a4 JP |
4657 | /* DESTROY gave object new lease on life */ |
4658 | return; | |
4659 | } | |
a0d0e21e | 4660 | } |
4e8e7886 | 4661 | |
a0d0e21e | 4662 | if (SvOBJECT(sv)) { |
4e8e7886 | 4663 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e | 4664 | SvOBJECT_off(sv); /* Curse the object. */ |
82bb6deb | 4665 | if (type != SVt_PVIO) |
3280af22 | 4666 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 4667 | } |
463ee0b2 | 4668 | } |
82bb6deb | 4669 | if (type >= SVt_PVMG) { |
524189f1 JH |
4670 | if (SvMAGIC(sv)) |
4671 | mg_free(sv); | |
82bb6deb | 4672 | if (type == SVt_PVMG && SvFLAGS(sv) & SVpad_TYPED) |
524189f1 JH |
4673 | SvREFCNT_dec(SvSTASH(sv)); |
4674 | } | |
82bb6deb | 4675 | switch (type) { |
8990e307 | 4676 | case SVt_PVIO: |
df0bd2f4 GS |
4677 | if (IoIFP(sv) && |
4678 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 4679 | IoIFP(sv) != PerlIO_stdout() && |
4680 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 4681 | { |
f2b5be74 | 4682 | io_close((IO*)sv, FALSE); |
93578b34 | 4683 | } |
1d7c1841 | 4684 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 4685 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 4686 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
4687 | Safefree(IoTOP_NAME(sv)); |
4688 | Safefree(IoFMT_NAME(sv)); | |
4689 | Safefree(IoBOTTOM_NAME(sv)); | |
82bb6deb | 4690 | goto freescalar; |
79072805 | 4691 | case SVt_PVBM: |
a0d0e21e | 4692 | goto freescalar; |
79072805 | 4693 | case SVt_PVCV: |
748a9306 | 4694 | case SVt_PVFM: |
85e6fe83 | 4695 | cv_undef((CV*)sv); |
a0d0e21e | 4696 | goto freescalar; |
79072805 | 4697 | case SVt_PVHV: |
85e6fe83 | 4698 | hv_undef((HV*)sv); |
a0d0e21e | 4699 | break; |
79072805 | 4700 | case SVt_PVAV: |
85e6fe83 | 4701 | av_undef((AV*)sv); |
a0d0e21e | 4702 | break; |
02270b4e | 4703 | case SVt_PVLV: |
dd28f7bb DM |
4704 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
4705 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
4706 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
4707 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
4708 | } | |
4709 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
4710 | SvREFCNT_dec(LvTARG(sv)); | |
02270b4e | 4711 | goto freescalar; |
a0d0e21e | 4712 | case SVt_PVGV: |
1edc1566 | 4713 | gp_free((GV*)sv); |
a0d0e21e | 4714 | Safefree(GvNAME(sv)); |
893645bd NC |
4715 | /* If we're in a stash, we don't own a reference to it. However it does |
4716 | have a back reference to us, which needs to be cleared. */ | |
4717 | if (GvSTASH(sv)) | |
4718 | sv_del_backref((SV*)GvSTASH(sv), sv); | |
79072805 | 4719 | case SVt_PVMG: |
79072805 LW |
4720 | case SVt_PVNV: |
4721 | case SVt_PVIV: | |
a0d0e21e | 4722 | freescalar: |
5228ca4e NC |
4723 | /* Don't bother with SvOOK_off(sv); as we're only going to free it. */ |
4724 | if (SvOOK(sv)) { | |
93524f2b | 4725 | SvPV_set(sv, SvPVX_mutable(sv) - SvIVX(sv)); |
5228ca4e NC |
4726 | /* Don't even bother with turning off the OOK flag. */ |
4727 | } | |
79072805 | 4728 | case SVt_PV: |
a0d0e21e | 4729 | case SVt_RV: |
810b8aa5 | 4730 | if (SvROK(sv)) { |
e15faf7d | 4731 | SV *target = SvRV(sv); |
810b8aa5 | 4732 | if (SvWEAKREF(sv)) |
e15faf7d | 4733 | sv_del_backref(target, sv); |
810b8aa5 | 4734 | else |
e15faf7d | 4735 | SvREFCNT_dec(target); |
810b8aa5 | 4736 | } |
f8c7b90f | 4737 | #ifdef PERL_OLD_COPY_ON_WRITE |
3f7c398e | 4738 | else if (SvPVX_const(sv)) { |
765f542d NC |
4739 | if (SvIsCOW(sv)) { |
4740 | /* I believe I need to grab the global SV mutex here and | |
4741 | then recheck the COW status. */ | |
46187eeb NC |
4742 | if (DEBUG_C_TEST) { |
4743 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 4744 | sv_dump(sv); |
46187eeb | 4745 | } |
bdd68bc3 NC |
4746 | sv_release_COW(sv, SvPVX_const(sv), SvLEN(sv), |
4747 | SV_COW_NEXT_SV(sv)); | |
765f542d NC |
4748 | /* And drop it here. */ |
4749 | SvFAKE_off(sv); | |
4750 | } else if (SvLEN(sv)) { | |
3f7c398e | 4751 | Safefree(SvPVX_const(sv)); |
765f542d NC |
4752 | } |
4753 | } | |
4754 | #else | |
3f7c398e | 4755 | else if (SvPVX_const(sv) && SvLEN(sv)) |
94010e71 | 4756 | Safefree(SvPVX_mutable(sv)); |
3f7c398e | 4757 | else if (SvPVX_const(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
bdd68bc3 | 4758 | unshare_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sv))); |
1c846c1f NIS |
4759 | SvFAKE_off(sv); |
4760 | } | |
765f542d | 4761 | #endif |
79072805 LW |
4762 | break; |
4763 | case SVt_NV: | |
79072805 LW |
4764 | break; |
4765 | } | |
4766 | ||
893645bd NC |
4767 | SvFLAGS(sv) &= SVf_BREAK; |
4768 | SvFLAGS(sv) |= SVTYPEMASK; | |
4769 | ||
8edfc514 | 4770 | if (sv_type_details->arena) { |
b9502f15 | 4771 | del_body(((char *)SvANY(sv) + sv_type_details->offset), |
8edfc514 NC |
4772 | &PL_body_roots[type]); |
4773 | } | |
4774 | else if (sv_type_details->size) { | |
4775 | my_safefree(SvANY(sv)); | |
4776 | } | |
79072805 LW |
4777 | } |
4778 | ||
645c22ef DM |
4779 | /* |
4780 | =for apidoc sv_newref | |
4781 | ||
4782 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
4783 | instead. | |
4784 | ||
4785 | =cut | |
4786 | */ | |
4787 | ||
79072805 | 4788 | SV * |
864dbfa3 | 4789 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 4790 | { |
463ee0b2 | 4791 | if (sv) |
4db098f4 | 4792 | (SvREFCNT(sv))++; |
79072805 LW |
4793 | return sv; |
4794 | } | |
4795 | ||
c461cf8f JH |
4796 | /* |
4797 | =for apidoc sv_free | |
4798 | ||
645c22ef DM |
4799 | Decrement an SV's reference count, and if it drops to zero, call |
4800 | C<sv_clear> to invoke destructors and free up any memory used by | |
4801 | the body; finally, deallocate the SV's head itself. | |
4802 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
4803 | |
4804 | =cut | |
4805 | */ | |
4806 | ||
79072805 | 4807 | void |
864dbfa3 | 4808 | Perl_sv_free(pTHX_ SV *sv) |
79072805 | 4809 | { |
27da23d5 | 4810 | dVAR; |
79072805 LW |
4811 | if (!sv) |
4812 | return; | |
a0d0e21e LW |
4813 | if (SvREFCNT(sv) == 0) { |
4814 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
4815 | /* this SV's refcnt has been artificially decremented to |
4816 | * trigger cleanup */ | |
a0d0e21e | 4817 | return; |
3280af22 | 4818 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 4819 | return; |
d689ffdd JP |
4820 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
4821 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
4822 | SvREFCNT(sv) = (~(U32)0)/2; | |
4823 | return; | |
4824 | } | |
41e4abd8 | 4825 | if (ckWARN_d(WARN_INTERNAL)) { |
d5dede04 | 4826 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
4827 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
4828 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
41e4abd8 NC |
4829 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
4830 | Perl_dump_sv_child(aTHX_ sv); | |
4831 | #endif | |
4832 | } | |
79072805 LW |
4833 | return; |
4834 | } | |
4db098f4 | 4835 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 4836 | return; |
8c4d3c90 NC |
4837 | Perl_sv_free2(aTHX_ sv); |
4838 | } | |
4839 | ||
4840 | void | |
4841 | Perl_sv_free2(pTHX_ SV *sv) | |
4842 | { | |
27da23d5 | 4843 | dVAR; |
463ee0b2 LW |
4844 | #ifdef DEBUGGING |
4845 | if (SvTEMP(sv)) { | |
0453d815 | 4846 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 4847 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
4848 | "Attempt to free temp prematurely: SV 0x%"UVxf |
4849 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 4850 | return; |
79072805 | 4851 | } |
463ee0b2 | 4852 | #endif |
d689ffdd JP |
4853 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
4854 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
4855 | SvREFCNT(sv) = (~(U32)0)/2; | |
4856 | return; | |
4857 | } | |
79072805 | 4858 | sv_clear(sv); |
477f5d66 CS |
4859 | if (! SvREFCNT(sv)) |
4860 | del_SV(sv); | |
79072805 LW |
4861 | } |
4862 | ||
954c1994 GS |
4863 | /* |
4864 | =for apidoc sv_len | |
4865 | ||
645c22ef DM |
4866 | Returns the length of the string in the SV. Handles magic and type |
4867 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
4868 | |
4869 | =cut | |
4870 | */ | |
4871 | ||
79072805 | 4872 | STRLEN |
864dbfa3 | 4873 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 4874 | { |
463ee0b2 | 4875 | STRLEN len; |
79072805 LW |
4876 | |
4877 | if (!sv) | |
4878 | return 0; | |
4879 | ||
8990e307 | 4880 | if (SvGMAGICAL(sv)) |
565764a8 | 4881 | len = mg_length(sv); |
8990e307 | 4882 | else |
4d84ee25 | 4883 | (void)SvPV_const(sv, len); |
463ee0b2 | 4884 | return len; |
79072805 LW |
4885 | } |
4886 | ||
c461cf8f JH |
4887 | /* |
4888 | =for apidoc sv_len_utf8 | |
4889 | ||
4890 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 4891 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
4892 | |
4893 | =cut | |
4894 | */ | |
4895 | ||
7e8c5dac HS |
4896 | /* |
4897 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
4898 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
4899 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
7a5fa8a2 | 4900 | * |
7e8c5dac HS |
4901 | */ |
4902 | ||
a0ed51b3 | 4903 | STRLEN |
864dbfa3 | 4904 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 4905 | { |
a0ed51b3 LW |
4906 | if (!sv) |
4907 | return 0; | |
4908 | ||
a0ed51b3 | 4909 | if (SvGMAGICAL(sv)) |
b76347f2 | 4910 | return mg_length(sv); |
a0ed51b3 | 4911 | else |
b76347f2 | 4912 | { |
7e8c5dac | 4913 | STRLEN len, ulen; |
e62f0680 | 4914 | const U8 *s = (U8*)SvPV_const(sv, len); |
7e8c5dac HS |
4915 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
4916 | ||
e23c8137 | 4917 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) { |
7e8c5dac | 4918 | ulen = mg->mg_len; |
e23c8137 JH |
4919 | #ifdef PERL_UTF8_CACHE_ASSERT |
4920 | assert(ulen == Perl_utf8_length(aTHX_ s, s + len)); | |
4921 | #endif | |
4922 | } | |
7e8c5dac HS |
4923 | else { |
4924 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
4925 | if (!mg && !SvREADONLY(sv)) { | |
4926 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
4927 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
4928 | assert(mg); | |
4929 | } | |
4930 | if (mg) | |
4931 | mg->mg_len = ulen; | |
4932 | } | |
4933 | return ulen; | |
4934 | } | |
4935 | } | |
4936 | ||
4937 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
4938 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
4939 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
4940 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
4941 | * and byte offset) cache positions. | |
4942 | * | |
4943 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
4944 | * Note that the mg_len is not the length of the mg_ptr field. | |
4945 | * | |
4946 | */ | |
4947 | STATIC bool | |
245d4a47 NC |
4948 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, |
4949 | I32 offsetp, const U8 *s, const U8 *start) | |
7e8c5dac | 4950 | { |
7a5fa8a2 | 4951 | bool found = FALSE; |
7e8c5dac HS |
4952 | |
4953 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
8f78557a | 4954 | if (!*mgp) |
27da23d5 | 4955 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, (MGVTBL*)&PL_vtbl_utf8, 0, 0); |
7e8c5dac | 4956 | assert(*mgp); |
b76347f2 | 4957 | |
7e8c5dac HS |
4958 | if ((*mgp)->mg_ptr) |
4959 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
4960 | else { | |
a02a5408 | 4961 | Newxz(*cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
4962 | (*mgp)->mg_ptr = (char *) *cachep; |
4963 | } | |
4964 | assert(*cachep); | |
4965 | ||
a3b680e6 | 4966 | (*cachep)[i] = offsetp; |
7e8c5dac HS |
4967 | (*cachep)[i+1] = s - start; |
4968 | found = TRUE; | |
a0ed51b3 | 4969 | } |
7e8c5dac HS |
4970 | |
4971 | return found; | |
a0ed51b3 LW |
4972 | } |
4973 | ||
645c22ef | 4974 | /* |
7e8c5dac HS |
4975 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
4976 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
4977 | * between UTF-8 and byte offsets. See also the comments of | |
4978 | * S_utf8_mg_pos_init(). | |
4979 | * | |
4980 | */ | |
4981 | STATIC bool | |
245d4a47 | 4982 | S_utf8_mg_pos(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, I32 uoff, const U8 **sp, const U8 *start, const U8 *send) |
7e8c5dac HS |
4983 | { |
4984 | bool found = FALSE; | |
4985 | ||
4986 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
4987 | if (!*mgp) | |
4988 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
4989 | if (*mgp && (*mgp)->mg_ptr) { | |
4990 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
e23c8137 | 4991 | ASSERT_UTF8_CACHE(*cachep); |
667208dd | 4992 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
7a5fa8a2 | 4993 | found = TRUE; |
7e8c5dac HS |
4994 | else { /* We will skip to the right spot. */ |
4995 | STRLEN forw = 0; | |
4996 | STRLEN backw = 0; | |
a3b680e6 | 4997 | const U8* p = NULL; |
7e8c5dac HS |
4998 | |
4999 | /* The assumption is that going backward is half | |
5000 | * the speed of going forward (that's where the | |
5001 | * 2 * backw in the below comes from). (The real | |
5002 | * figure of course depends on the UTF-8 data.) */ | |
5003 | ||
667208dd | 5004 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 5005 | forw = uoff; |
667208dd | 5006 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
5007 | |
5008 | if (forw < 2 * backw) | |
5009 | p = start; | |
5010 | else | |
5011 | p = start + (*cachep)[i+1]; | |
5012 | } | |
5013 | /* Try this only for the substr offset (i == 0), | |
5014 | * not for the substr length (i == 2). */ | |
5015 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
a3b680e6 | 5016 | const STRLEN ulen = sv_len_utf8(sv); |
7e8c5dac | 5017 | |
667208dd JH |
5018 | if ((STRLEN)uoff < ulen) { |
5019 | forw = (STRLEN)uoff - (*cachep)[i]; | |
5020 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
5021 | |
5022 | if (forw < 2 * backw) | |
5023 | p = start + (*cachep)[i+1]; | |
5024 | else | |
5025 | p = send; | |
5026 | } | |
5027 | ||
5028 | /* If the string is not long enough for uoff, | |
5029 | * we could extend it, but not at this low a level. */ | |
5030 | } | |
5031 | ||
5032 | if (p) { | |
5033 | if (forw < 2 * backw) { | |
5034 | while (forw--) | |
5035 | p += UTF8SKIP(p); | |
5036 | } | |
5037 | else { | |
5038 | while (backw--) { | |
5039 | p--; | |
5040 | while (UTF8_IS_CONTINUATION(*p)) | |
5041 | p--; | |
5042 | } | |
5043 | } | |
5044 | ||
5045 | /* Update the cache. */ | |
667208dd | 5046 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac | 5047 | (*cachep)[i+1] = p - start; |
8f78557a AE |
5048 | |
5049 | /* Drop the stale "length" cache */ | |
5050 | if (i == 0) { | |
5051 | (*cachep)[2] = 0; | |
5052 | (*cachep)[3] = 0; | |
5053 | } | |
7a5fa8a2 | 5054 | |
7e8c5dac HS |
5055 | found = TRUE; |
5056 | } | |
5057 | } | |
5058 | if (found) { /* Setup the return values. */ | |
5059 | *offsetp = (*cachep)[i+1]; | |
5060 | *sp = start + *offsetp; | |
5061 | if (*sp >= send) { | |
5062 | *sp = send; | |
5063 | *offsetp = send - start; | |
5064 | } | |
5065 | else if (*sp < start) { | |
5066 | *sp = start; | |
5067 | *offsetp = 0; | |
5068 | } | |
5069 | } | |
5070 | } | |
e23c8137 JH |
5071 | #ifdef PERL_UTF8_CACHE_ASSERT |
5072 | if (found) { | |
5073 | U8 *s = start; | |
5074 | I32 n = uoff; | |
5075 | ||
5076 | while (n-- && s < send) | |
5077 | s += UTF8SKIP(s); | |
5078 | ||
5079 | if (i == 0) { | |
5080 | assert(*offsetp == s - start); | |
5081 | assert((*cachep)[0] == (STRLEN)uoff); | |
5082 | assert((*cachep)[1] == *offsetp); | |
5083 | } | |
5084 | ASSERT_UTF8_CACHE(*cachep); | |
5085 | } | |
5086 | #endif | |
7e8c5dac | 5087 | } |
e23c8137 | 5088 | |
7e8c5dac HS |
5089 | return found; |
5090 | } | |
7a5fa8a2 | 5091 | |
7e8c5dac | 5092 | /* |
645c22ef DM |
5093 | =for apidoc sv_pos_u2b |
5094 | ||
1e54db1a | 5095 | Converts the value pointed to by offsetp from a count of UTF-8 chars from |
645c22ef DM |
5096 | the start of the string, to a count of the equivalent number of bytes; if |
5097 | lenp is non-zero, it does the same to lenp, but this time starting from | |
5098 | the offset, rather than from the start of the string. Handles magic and | |
5099 | type coercion. | |
5100 | ||
5101 | =cut | |
5102 | */ | |
5103 | ||
7e8c5dac HS |
5104 | /* |
5105 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
5106 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5107 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
5108 | * | |
5109 | */ | |
5110 | ||
a0ed51b3 | 5111 | void |
864dbfa3 | 5112 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 5113 | { |
245d4a47 | 5114 | const U8 *start; |
a0ed51b3 LW |
5115 | STRLEN len; |
5116 | ||
5117 | if (!sv) | |
5118 | return; | |
5119 | ||
245d4a47 | 5120 | start = (U8*)SvPV_const(sv, len); |
7e8c5dac | 5121 | if (len) { |
b464bac0 AL |
5122 | STRLEN boffset = 0; |
5123 | STRLEN *cache = 0; | |
245d4a47 NC |
5124 | const U8 *s = start; |
5125 | I32 uoffset = *offsetp; | |
9d4ba2ae | 5126 | const U8 * const send = s + len; |
245d4a47 NC |
5127 | MAGIC *mg = 0; |
5128 | bool found = FALSE; | |
7e8c5dac | 5129 | |
bdf77a2a | 5130 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
5131 | found = TRUE; |
5132 | if (!found && uoffset > 0) { | |
5133 | while (s < send && uoffset--) | |
5134 | s += UTF8SKIP(s); | |
5135 | if (s >= send) | |
5136 | s = send; | |
a3b680e6 | 5137 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, *offsetp, s, start)) |
7e8c5dac HS |
5138 | boffset = cache[1]; |
5139 | *offsetp = s - start; | |
5140 | } | |
5141 | if (lenp) { | |
5142 | found = FALSE; | |
5143 | start = s; | |
ec062429 | 5144 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp, &s, start, send)) { |
7e8c5dac HS |
5145 | *lenp -= boffset; |
5146 | found = TRUE; | |
5147 | } | |
5148 | if (!found && *lenp > 0) { | |
5149 | I32 ulen = *lenp; | |
5150 | if (ulen > 0) | |
5151 | while (s < send && ulen--) | |
5152 | s += UTF8SKIP(s); | |
5153 | if (s >= send) | |
5154 | s = send; | |
a3b680e6 | 5155 | utf8_mg_pos_init(sv, &mg, &cache, 2, *lenp, s, start); |
7e8c5dac HS |
5156 | } |
5157 | *lenp = s - start; | |
5158 | } | |
e23c8137 | 5159 | ASSERT_UTF8_CACHE(cache); |
7e8c5dac HS |
5160 | } |
5161 | else { | |
5162 | *offsetp = 0; | |
5163 | if (lenp) | |
5164 | *lenp = 0; | |
a0ed51b3 | 5165 | } |
e23c8137 | 5166 | |
a0ed51b3 LW |
5167 | return; |
5168 | } | |
5169 | ||
645c22ef DM |
5170 | /* |
5171 | =for apidoc sv_pos_b2u | |
5172 | ||
5173 | Converts the value pointed to by offsetp from a count of bytes from the | |
1e54db1a | 5174 | start of the string, to a count of the equivalent number of UTF-8 chars. |
645c22ef DM |
5175 | Handles magic and type coercion. |
5176 | ||
5177 | =cut | |
5178 | */ | |
5179 | ||
7e8c5dac HS |
5180 | /* |
5181 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
5182 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5183 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
5184 | * | |
5185 | */ | |
5186 | ||
a0ed51b3 | 5187 | void |
7e8c5dac | 5188 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 5189 | { |
83003860 | 5190 | const U8* s; |
a0ed51b3 LW |
5191 | STRLEN len; |
5192 | ||
5193 | if (!sv) | |
5194 | return; | |
5195 | ||
83003860 | 5196 | s = (const U8*)SvPV_const(sv, len); |
eb160463 | 5197 | if ((I32)len < *offsetp) |
a0dbb045 | 5198 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac | 5199 | else { |
83003860 | 5200 | const U8* send = s + *offsetp; |
7e8c5dac HS |
5201 | MAGIC* mg = NULL; |
5202 | STRLEN *cache = NULL; | |
5203 | ||
5204 | len = 0; | |
5205 | ||
5206 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5207 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5208 | if (mg && mg->mg_ptr) { | |
5209 | cache = (STRLEN *) mg->mg_ptr; | |
c5661c80 | 5210 | if (cache[1] == (STRLEN)*offsetp) { |
7e8c5dac HS |
5211 | /* An exact match. */ |
5212 | *offsetp = cache[0]; | |
5213 | ||
5214 | return; | |
5215 | } | |
c5661c80 | 5216 | else if (cache[1] < (STRLEN)*offsetp) { |
7e8c5dac HS |
5217 | /* We already know part of the way. */ |
5218 | len = cache[0]; | |
5219 | s += cache[1]; | |
7a5fa8a2 | 5220 | /* Let the below loop do the rest. */ |
7e8c5dac HS |
5221 | } |
5222 | else { /* cache[1] > *offsetp */ | |
5223 | /* We already know all of the way, now we may | |
5224 | * be able to walk back. The same assumption | |
5225 | * is made as in S_utf8_mg_pos(), namely that | |
5226 | * walking backward is twice slower than | |
5227 | * walking forward. */ | |
9d4ba2ae | 5228 | const STRLEN forw = *offsetp; |
7e8c5dac HS |
5229 | STRLEN backw = cache[1] - *offsetp; |
5230 | ||
5231 | if (!(forw < 2 * backw)) { | |
83003860 | 5232 | const U8 *p = s + cache[1]; |
7e8c5dac | 5233 | STRLEN ubackw = 0; |
7a5fa8a2 | 5234 | |
a5b510f2 AE |
5235 | cache[1] -= backw; |
5236 | ||
7e8c5dac HS |
5237 | while (backw--) { |
5238 | p--; | |
0aeb64d0 | 5239 | while (UTF8_IS_CONTINUATION(*p)) { |
7e8c5dac | 5240 | p--; |
0aeb64d0 JH |
5241 | backw--; |
5242 | } | |
7e8c5dac HS |
5243 | ubackw++; |
5244 | } | |
5245 | ||
5246 | cache[0] -= ubackw; | |
0aeb64d0 | 5247 | *offsetp = cache[0]; |
a67d7df9 TS |
5248 | |
5249 | /* Drop the stale "length" cache */ | |
5250 | cache[2] = 0; | |
5251 | cache[3] = 0; | |
5252 | ||
0aeb64d0 | 5253 | return; |
7e8c5dac HS |
5254 | } |
5255 | } | |
5256 | } | |
e23c8137 | 5257 | ASSERT_UTF8_CACHE(cache); |
a0dbb045 | 5258 | } |
7e8c5dac HS |
5259 | |
5260 | while (s < send) { | |
5261 | STRLEN n = 1; | |
5262 | ||
5263 | /* Call utf8n_to_uvchr() to validate the sequence | |
5264 | * (unless a simple non-UTF character) */ | |
5265 | if (!UTF8_IS_INVARIANT(*s)) | |
5266 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
5267 | if (n > 0) { | |
5268 | s += n; | |
5269 | len++; | |
5270 | } | |
5271 | else | |
5272 | break; | |
5273 | } | |
5274 | ||
5275 | if (!SvREADONLY(sv)) { | |
5276 | if (!mg) { | |
5277 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5278 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5279 | } | |
5280 | assert(mg); | |
5281 | ||
5282 | if (!mg->mg_ptr) { | |
a02a5408 | 5283 | Newxz(cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
5284 | mg->mg_ptr = (char *) cache; |
5285 | } | |
5286 | assert(cache); | |
5287 | ||
5288 | cache[0] = len; | |
5289 | cache[1] = *offsetp; | |
a67d7df9 TS |
5290 | /* Drop the stale "length" cache */ |
5291 | cache[2] = 0; | |
5292 | cache[3] = 0; | |
7e8c5dac HS |
5293 | } |
5294 | ||
5295 | *offsetp = len; | |
a0ed51b3 | 5296 | } |
a0ed51b3 LW |
5297 | return; |
5298 | } | |
5299 | ||
954c1994 GS |
5300 | /* |
5301 | =for apidoc sv_eq | |
5302 | ||
5303 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
5304 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
5305 | coerce its args to strings if necessary. | |
954c1994 GS |
5306 | |
5307 | =cut | |
5308 | */ | |
5309 | ||
79072805 | 5310 | I32 |
e01b9e88 | 5311 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 5312 | { |
e1ec3a88 | 5313 | const char *pv1; |
463ee0b2 | 5314 | STRLEN cur1; |
e1ec3a88 | 5315 | const char *pv2; |
463ee0b2 | 5316 | STRLEN cur2; |
e01b9e88 | 5317 | I32 eq = 0; |
553e1bcc AT |
5318 | char *tpv = Nullch; |
5319 | SV* svrecode = Nullsv; | |
79072805 | 5320 | |
e01b9e88 | 5321 | if (!sv1) { |
79072805 LW |
5322 | pv1 = ""; |
5323 | cur1 = 0; | |
5324 | } | |
463ee0b2 | 5325 | else |
4d84ee25 | 5326 | pv1 = SvPV_const(sv1, cur1); |
79072805 | 5327 | |
e01b9e88 SC |
5328 | if (!sv2){ |
5329 | pv2 = ""; | |
5330 | cur2 = 0; | |
92d29cee | 5331 | } |
e01b9e88 | 5332 | else |
4d84ee25 | 5333 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 5334 | |
cf48d248 | 5335 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
5336 | /* Differing utf8ness. |
5337 | * Do not UTF8size the comparands as a side-effect. */ | |
5338 | if (PL_encoding) { | |
5339 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
5340 | svrecode = newSVpvn(pv2, cur2); |
5341 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 5342 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
5343 | } |
5344 | else { | |
553e1bcc AT |
5345 | svrecode = newSVpvn(pv1, cur1); |
5346 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 5347 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
5348 | } |
5349 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
5350 | if (cur1 != cur2) { |
5351 | SvREFCNT_dec(svrecode); | |
799ef3cb | 5352 | return FALSE; |
0a1bd7ac | 5353 | } |
799ef3cb JH |
5354 | } |
5355 | else { | |
5356 | bool is_utf8 = TRUE; | |
5357 | ||
5358 | if (SvUTF8(sv1)) { | |
5359 | /* sv1 is the UTF-8 one, | |
5360 | * if is equal it must be downgrade-able */ | |
9d4ba2ae | 5361 | char * const pv = (char*)bytes_from_utf8((const U8*)pv1, |
799ef3cb JH |
5362 | &cur1, &is_utf8); |
5363 | if (pv != pv1) | |
553e1bcc | 5364 | pv1 = tpv = pv; |
799ef3cb JH |
5365 | } |
5366 | else { | |
5367 | /* sv2 is the UTF-8 one, | |
5368 | * if is equal it must be downgrade-able */ | |
9d4ba2ae | 5369 | char * const pv = (char *)bytes_from_utf8((const U8*)pv2, |
799ef3cb JH |
5370 | &cur2, &is_utf8); |
5371 | if (pv != pv2) | |
553e1bcc | 5372 | pv2 = tpv = pv; |
799ef3cb JH |
5373 | } |
5374 | if (is_utf8) { | |
5375 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 5376 | assert (tpv == 0); |
799ef3cb JH |
5377 | return FALSE; |
5378 | } | |
5379 | } | |
cf48d248 JH |
5380 | } |
5381 | ||
5382 | if (cur1 == cur2) | |
765f542d | 5383 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 5384 | |
553e1bcc AT |
5385 | if (svrecode) |
5386 | SvREFCNT_dec(svrecode); | |
799ef3cb | 5387 | |
553e1bcc AT |
5388 | if (tpv) |
5389 | Safefree(tpv); | |
cf48d248 | 5390 | |
e01b9e88 | 5391 | return eq; |
79072805 LW |
5392 | } |
5393 | ||
954c1994 GS |
5394 | /* |
5395 | =for apidoc sv_cmp | |
5396 | ||
5397 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
5398 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
5399 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
5400 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
5401 | |
5402 | =cut | |
5403 | */ | |
5404 | ||
79072805 | 5405 | I32 |
e01b9e88 | 5406 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 5407 | { |
560a288e | 5408 | STRLEN cur1, cur2; |
e1ec3a88 AL |
5409 | const char *pv1, *pv2; |
5410 | char *tpv = Nullch; | |
cf48d248 | 5411 | I32 cmp; |
553e1bcc | 5412 | SV *svrecode = Nullsv; |
560a288e | 5413 | |
e01b9e88 SC |
5414 | if (!sv1) { |
5415 | pv1 = ""; | |
560a288e GS |
5416 | cur1 = 0; |
5417 | } | |
e01b9e88 | 5418 | else |
4d84ee25 | 5419 | pv1 = SvPV_const(sv1, cur1); |
560a288e | 5420 | |
553e1bcc | 5421 | if (!sv2) { |
e01b9e88 | 5422 | pv2 = ""; |
560a288e GS |
5423 | cur2 = 0; |
5424 | } | |
e01b9e88 | 5425 | else |
4d84ee25 | 5426 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 5427 | |
cf48d248 | 5428 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
5429 | /* Differing utf8ness. |
5430 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 5431 | if (SvUTF8(sv1)) { |
799ef3cb | 5432 | if (PL_encoding) { |
553e1bcc AT |
5433 | svrecode = newSVpvn(pv2, cur2); |
5434 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 5435 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
5436 | } |
5437 | else { | |
e1ec3a88 | 5438 | pv2 = tpv = (char*)bytes_to_utf8((const U8*)pv2, &cur2); |
799ef3cb | 5439 | } |
cf48d248 JH |
5440 | } |
5441 | else { | |
799ef3cb | 5442 | if (PL_encoding) { |
553e1bcc AT |
5443 | svrecode = newSVpvn(pv1, cur1); |
5444 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 5445 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
5446 | } |
5447 | else { | |
e1ec3a88 | 5448 | pv1 = tpv = (char*)bytes_to_utf8((const U8*)pv1, &cur1); |
799ef3cb | 5449 | } |
cf48d248 JH |
5450 | } |
5451 | } | |
5452 | ||
e01b9e88 | 5453 | if (!cur1) { |
cf48d248 | 5454 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 5455 | } else if (!cur2) { |
cf48d248 JH |
5456 | cmp = 1; |
5457 | } else { | |
e1ec3a88 | 5458 | const I32 retval = memcmp((const void*)pv1, (const void*)pv2, cur1 < cur2 ? cur1 : cur2); |
e01b9e88 SC |
5459 | |
5460 | if (retval) { | |
cf48d248 | 5461 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 5462 | } else if (cur1 == cur2) { |
cf48d248 JH |
5463 | cmp = 0; |
5464 | } else { | |
5465 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 5466 | } |
cf48d248 | 5467 | } |
16660edb | 5468 | |
553e1bcc AT |
5469 | if (svrecode) |
5470 | SvREFCNT_dec(svrecode); | |
799ef3cb | 5471 | |
553e1bcc AT |
5472 | if (tpv) |
5473 | Safefree(tpv); | |
cf48d248 JH |
5474 | |
5475 | return cmp; | |
bbce6d69 | 5476 | } |
16660edb | 5477 | |
c461cf8f JH |
5478 | /* |
5479 | =for apidoc sv_cmp_locale | |
5480 | ||
645c22ef DM |
5481 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
5482 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
5483 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
5484 | |
5485 | =cut | |
5486 | */ | |
5487 | ||
bbce6d69 | 5488 | I32 |
864dbfa3 | 5489 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 5490 | { |
36477c24 | 5491 | #ifdef USE_LOCALE_COLLATE |
16660edb | 5492 | |
bbce6d69 | 5493 | char *pv1, *pv2; |
5494 | STRLEN len1, len2; | |
5495 | I32 retval; | |
16660edb | 5496 | |
3280af22 | 5497 | if (PL_collation_standard) |
bbce6d69 | 5498 | goto raw_compare; |
16660edb | 5499 | |
bbce6d69 | 5500 | len1 = 0; |
8ac85365 | 5501 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 5502 | len2 = 0; |
8ac85365 | 5503 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 5504 | |
bbce6d69 | 5505 | if (!pv1 || !len1) { |
5506 | if (pv2 && len2) | |
5507 | return -1; | |
5508 | else | |
5509 | goto raw_compare; | |
5510 | } | |
5511 | else { | |
5512 | if (!pv2 || !len2) | |
5513 | return 1; | |
5514 | } | |
16660edb | 5515 | |
bbce6d69 | 5516 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 5517 | |
bbce6d69 | 5518 | if (retval) |
16660edb | 5519 | return retval < 0 ? -1 : 1; |
5520 | ||
bbce6d69 | 5521 | /* |
5522 | * When the result of collation is equality, that doesn't mean | |
5523 | * that there are no differences -- some locales exclude some | |
5524 | * characters from consideration. So to avoid false equalities, | |
5525 | * we use the raw string as a tiebreaker. | |
5526 | */ | |
16660edb | 5527 | |
bbce6d69 | 5528 | raw_compare: |
5529 | /* FALL THROUGH */ | |
16660edb | 5530 | |
36477c24 | 5531 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 5532 | |
bbce6d69 | 5533 | return sv_cmp(sv1, sv2); |
5534 | } | |
79072805 | 5535 | |
645c22ef | 5536 | |
36477c24 | 5537 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 5538 | |
7a4c00b4 | 5539 | /* |
645c22ef DM |
5540 | =for apidoc sv_collxfrm |
5541 | ||
5542 | Add Collate Transform magic to an SV if it doesn't already have it. | |
5543 | ||
5544 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
5545 | scalar data of the variable, but transformed to such a format that a normal | |
5546 | memory comparison can be used to compare the data according to the locale | |
5547 | settings. | |
5548 | ||
5549 | =cut | |
5550 | */ | |
5551 | ||
bbce6d69 | 5552 | char * |
864dbfa3 | 5553 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 5554 | { |
7a4c00b4 | 5555 | MAGIC *mg; |
16660edb | 5556 | |
14befaf4 | 5557 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 5558 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
93524f2b NC |
5559 | const char *s; |
5560 | char *xf; | |
bbce6d69 | 5561 | STRLEN len, xlen; |
5562 | ||
7a4c00b4 | 5563 | if (mg) |
5564 | Safefree(mg->mg_ptr); | |
93524f2b | 5565 | s = SvPV_const(sv, len); |
bbce6d69 | 5566 | if ((xf = mem_collxfrm(s, len, &xlen))) { |
ff0cee69 | 5567 | if (SvREADONLY(sv)) { |
5568 | SAVEFREEPV(xf); | |
5569 | *nxp = xlen; | |
3280af22 | 5570 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 5571 | } |
7a4c00b4 | 5572 | if (! mg) { |
14befaf4 DM |
5573 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
5574 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 5575 | assert(mg); |
bbce6d69 | 5576 | } |
7a4c00b4 | 5577 | mg->mg_ptr = xf; |
565764a8 | 5578 | mg->mg_len = xlen; |
7a4c00b4 | 5579 | } |
5580 | else { | |
ff0cee69 | 5581 | if (mg) { |
5582 | mg->mg_ptr = NULL; | |
565764a8 | 5583 | mg->mg_len = -1; |
ff0cee69 | 5584 | } |
bbce6d69 | 5585 | } |
5586 | } | |
7a4c00b4 | 5587 | if (mg && mg->mg_ptr) { |
565764a8 | 5588 | *nxp = mg->mg_len; |
3280af22 | 5589 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 5590 | } |
5591 | else { | |
5592 | *nxp = 0; | |
5593 | return NULL; | |
16660edb | 5594 | } |
79072805 LW |
5595 | } |
5596 | ||
36477c24 | 5597 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 5598 | |
c461cf8f JH |
5599 | /* |
5600 | =for apidoc sv_gets | |
5601 | ||
5602 | Get a line from the filehandle and store it into the SV, optionally | |
5603 | appending to the currently-stored string. | |
5604 | ||
5605 | =cut | |
5606 | */ | |
5607 | ||
79072805 | 5608 | char * |
864dbfa3 | 5609 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 5610 | { |
e1ec3a88 | 5611 | const char *rsptr; |
c07a80fd | 5612 | STRLEN rslen; |
5613 | register STDCHAR rslast; | |
5614 | register STDCHAR *bp; | |
5615 | register I32 cnt; | |
9c5ffd7c | 5616 | I32 i = 0; |
8bfdd7d9 | 5617 | I32 rspara = 0; |
e311fd51 | 5618 | I32 recsize; |
c07a80fd | 5619 | |
bc44a8a2 NC |
5620 | if (SvTHINKFIRST(sv)) |
5621 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
5622 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
5623 | from <>. | |
5624 | However, perlbench says it's slower, because the existing swipe code | |
5625 | is faster than copy on write. | |
5626 | Swings and roundabouts. */ | |
862a34c6 | 5627 | SvUPGRADE(sv, SVt_PV); |
99491443 | 5628 | |
ff68c719 | 5629 | SvSCREAM_off(sv); |
efd8b2ba AE |
5630 | |
5631 | if (append) { | |
5632 | if (PerlIO_isutf8(fp)) { | |
5633 | if (!SvUTF8(sv)) { | |
5634 | sv_utf8_upgrade_nomg(sv); | |
5635 | sv_pos_u2b(sv,&append,0); | |
5636 | } | |
5637 | } else if (SvUTF8(sv)) { | |
1b6737cc | 5638 | SV * const tsv = NEWSV(0,0); |
efd8b2ba AE |
5639 | sv_gets(tsv, fp, 0); |
5640 | sv_utf8_upgrade_nomg(tsv); | |
5641 | SvCUR_set(sv,append); | |
5642 | sv_catsv(sv,tsv); | |
5643 | sv_free(tsv); | |
5644 | goto return_string_or_null; | |
5645 | } | |
5646 | } | |
5647 | ||
5648 | SvPOK_only(sv); | |
5649 | if (PerlIO_isutf8(fp)) | |
5650 | SvUTF8_on(sv); | |
c07a80fd | 5651 | |
923e4eb5 | 5652 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
5653 | /* we always read code in line mode */ |
5654 | rsptr = "\n"; | |
5655 | rslen = 1; | |
5656 | } | |
5657 | else if (RsSNARF(PL_rs)) { | |
7a5fa8a2 NIS |
5658 | /* If it is a regular disk file use size from stat() as estimate |
5659 | of amount we are going to read - may result in malloc-ing | |
5660 | more memory than we realy need if layers bellow reduce | |
e468d35b NIS |
5661 | size we read (e.g. CRLF or a gzip layer) |
5662 | */ | |
e311fd51 | 5663 | Stat_t st; |
e468d35b | 5664 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
f54cb97a | 5665 | const Off_t offset = PerlIO_tell(fp); |
58f1856e | 5666 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
5667 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
5668 | } | |
5669 | } | |
c07a80fd | 5670 | rsptr = NULL; |
5671 | rslen = 0; | |
5672 | } | |
3280af22 | 5673 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 5674 | I32 bytesread; |
5b2b9c68 HM |
5675 | char *buffer; |
5676 | ||
5677 | /* Grab the size of the record we're getting */ | |
3280af22 | 5678 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 5679 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
5680 | /* Go yank in */ |
5681 | #ifdef VMS | |
5682 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
5683 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
5684 | /* doing, but we've got no other real choice - except avoid stdio |
5685 | as implementation - perhaps write a :vms layer ? | |
5686 | */ | |
5b2b9c68 HM |
5687 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
5688 | #else | |
5689 | bytesread = PerlIO_read(fp, buffer, recsize); | |
5690 | #endif | |
27e6ca2d AE |
5691 | if (bytesread < 0) |
5692 | bytesread = 0; | |
e311fd51 | 5693 | SvCUR_set(sv, bytesread += append); |
e670df4e | 5694 | buffer[bytesread] = '\0'; |
efd8b2ba | 5695 | goto return_string_or_null; |
5b2b9c68 | 5696 | } |
3280af22 | 5697 | else if (RsPARA(PL_rs)) { |
c07a80fd | 5698 | rsptr = "\n\n"; |
5699 | rslen = 2; | |
8bfdd7d9 | 5700 | rspara = 1; |
c07a80fd | 5701 | } |
7d59b7e4 NIS |
5702 | else { |
5703 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
5704 | if (PerlIO_isutf8(fp)) { | |
5705 | rsptr = SvPVutf8(PL_rs, rslen); | |
5706 | } | |
5707 | else { | |
5708 | if (SvUTF8(PL_rs)) { | |
5709 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
5710 | Perl_croak(aTHX_ "Wide character in $/"); | |
5711 | } | |
5712 | } | |
93524f2b | 5713 | rsptr = SvPV_const(PL_rs, rslen); |
7d59b7e4 NIS |
5714 | } |
5715 | } | |
5716 | ||
c07a80fd | 5717 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
5718 | ||
8bfdd7d9 | 5719 | if (rspara) { /* have to do this both before and after */ |
79072805 | 5720 | do { /* to make sure file boundaries work right */ |
760ac839 | 5721 | if (PerlIO_eof(fp)) |
a0d0e21e | 5722 | return 0; |
760ac839 | 5723 | i = PerlIO_getc(fp); |
79072805 | 5724 | if (i != '\n') { |
a0d0e21e LW |
5725 | if (i == -1) |
5726 | return 0; | |
760ac839 | 5727 | PerlIO_ungetc(fp,i); |
79072805 LW |
5728 | break; |
5729 | } | |
5730 | } while (i != EOF); | |
5731 | } | |
c07a80fd | 5732 | |
760ac839 LW |
5733 | /* See if we know enough about I/O mechanism to cheat it ! */ |
5734 | ||
5735 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 5736 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
5737 | enough here - and may even be a macro allowing compile |
5738 | time optimization. | |
5739 | */ | |
5740 | ||
5741 | if (PerlIO_fast_gets(fp)) { | |
5742 | ||
5743 | /* | |
5744 | * We're going to steal some values from the stdio struct | |
5745 | * and put EVERYTHING in the innermost loop into registers. | |
5746 | */ | |
5747 | register STDCHAR *ptr; | |
5748 | STRLEN bpx; | |
5749 | I32 shortbuffered; | |
5750 | ||
16660edb | 5751 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
5752 | /* An ungetc()d char is handled separately from the regular | |
5753 | * buffer, so we getc() it back out and stuff it in the buffer. | |
5754 | */ | |
5755 | i = PerlIO_getc(fp); | |
5756 | if (i == EOF) return 0; | |
5757 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
5758 | (*fp)->_cnt++; | |
5759 | #endif | |
c07a80fd | 5760 | |
c2960299 | 5761 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 5762 | |
a20bf0c3 | 5763 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b | 5764 | /* make sure we have the room */ |
7a5fa8a2 | 5765 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { |
e468d35b | 5766 | /* Not room for all of it |
7a5fa8a2 | 5767 | if we are looking for a separator and room for some |
e468d35b NIS |
5768 | */ |
5769 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7a5fa8a2 | 5770 | /* just process what we have room for */ |
79072805 LW |
5771 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
5772 | cnt -= shortbuffered; | |
5773 | } | |
5774 | else { | |
5775 | shortbuffered = 0; | |
bbce6d69 | 5776 | /* remember that cnt can be negative */ |
eb160463 | 5777 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
5778 | } |
5779 | } | |
7a5fa8a2 | 5780 | else |
79072805 | 5781 | shortbuffered = 0; |
3f7c398e | 5782 | bp = (STDCHAR*)SvPVX_const(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 5783 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 5784 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 5785 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 5786 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 5787 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 5788 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 5789 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
5790 | for (;;) { |
5791 | screamer: | |
93a17b20 | 5792 | if (cnt > 0) { |
c07a80fd | 5793 | if (rslen) { |
760ac839 LW |
5794 | while (cnt > 0) { /* this | eat */ |
5795 | cnt--; | |
c07a80fd | 5796 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
5797 | goto thats_all_folks; /* screams | sed :-) */ | |
5798 | } | |
5799 | } | |
5800 | else { | |
1c846c1f NIS |
5801 | Copy(ptr, bp, cnt, char); /* this | eat */ |
5802 | bp += cnt; /* screams | dust */ | |
c07a80fd | 5803 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 5804 | cnt = 0; |
93a17b20 | 5805 | } |
79072805 LW |
5806 | } |
5807 | ||
748a9306 | 5808 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
5809 | cnt = shortbuffered; |
5810 | shortbuffered = 0; | |
3f7c398e | 5811 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
5812 | SvCUR_set(sv, bpx); |
5813 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
3f7c398e | 5814 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
5815 | continue; |
5816 | } | |
5817 | ||
16660edb | 5818 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
5819 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
5820 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 5821 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 5822 | #if 0 |
16660edb | 5823 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 5824 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 5825 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 5826 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 5827 | #endif |
1c846c1f | 5828 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 5829 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
5830 | another abstraction. */ | |
760ac839 | 5831 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 5832 | #if 0 |
16660edb | 5833 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 5834 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 5835 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 5836 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 5837 | #endif |
a20bf0c3 JH |
5838 | cnt = PerlIO_get_cnt(fp); |
5839 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 5840 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 5841 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 5842 | |
748a9306 LW |
5843 | if (i == EOF) /* all done for ever? */ |
5844 | goto thats_really_all_folks; | |
5845 | ||
3f7c398e | 5846 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
5847 | SvCUR_set(sv, bpx); |
5848 | SvGROW(sv, bpx + cnt + 2); | |
3f7c398e | 5849 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
c07a80fd | 5850 | |
eb160463 | 5851 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 5852 | |
c07a80fd | 5853 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 5854 | goto thats_all_folks; |
79072805 LW |
5855 | } |
5856 | ||
5857 | thats_all_folks: | |
3f7c398e | 5858 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX_const(sv)) < rslen) || |
36477c24 | 5859 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 5860 | goto screamer; /* go back to the fray */ |
79072805 LW |
5861 | thats_really_all_folks: |
5862 | if (shortbuffered) | |
5863 | cnt += shortbuffered; | |
16660edb | 5864 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 5865 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 5866 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 5867 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 5868 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 5869 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 5870 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 5871 | *bp = '\0'; |
3f7c398e | 5872 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX_const(sv)); /* set length */ |
16660edb | 5873 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 5874 | "Screamer: done, len=%ld, string=|%.*s|\n", |
3f7c398e | 5875 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX_const(sv))); |
760ac839 LW |
5876 | } |
5877 | else | |
79072805 | 5878 | { |
6edd2cd5 | 5879 | /*The big, slow, and stupid way. */ |
27da23d5 | 5880 | #ifdef USE_HEAP_INSTEAD_OF_STACK /* Even slower way. */ |
6edd2cd5 | 5881 | STDCHAR *buf = 0; |
a02a5408 | 5882 | Newx(buf, 8192, STDCHAR); |
6edd2cd5 | 5883 | assert(buf); |
4d2c4e07 | 5884 | #else |
6edd2cd5 | 5885 | STDCHAR buf[8192]; |
4d2c4e07 | 5886 | #endif |
79072805 | 5887 | |
760ac839 | 5888 | screamer2: |
c07a80fd | 5889 | if (rslen) { |
00b6aa41 | 5890 | register const STDCHAR * const bpe = buf + sizeof(buf); |
760ac839 | 5891 | bp = buf; |
eb160463 | 5892 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
5893 | ; /* keep reading */ |
5894 | cnt = bp - buf; | |
c07a80fd | 5895 | } |
5896 | else { | |
760ac839 | 5897 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 5898 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
5899 | * both args of ?: operator, causing EOF to change into 255 | |
5900 | */ | |
37be0adf | 5901 | if (cnt > 0) |
cbe9e203 JH |
5902 | i = (U8)buf[cnt - 1]; |
5903 | else | |
37be0adf | 5904 | i = EOF; |
c07a80fd | 5905 | } |
79072805 | 5906 | |
cbe9e203 JH |
5907 | if (cnt < 0) |
5908 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
5909 | if (append) | |
5910 | sv_catpvn(sv, (char *) buf, cnt); | |
5911 | else | |
5912 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 5913 | |
5914 | if (i != EOF && /* joy */ | |
5915 | (!rslen || | |
5916 | SvCUR(sv) < rslen || | |
3f7c398e | 5917 | memNE(SvPVX_const(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
5918 | { |
5919 | append = -1; | |
63e4d877 CS |
5920 | /* |
5921 | * If we're reading from a TTY and we get a short read, | |
5922 | * indicating that the user hit his EOF character, we need | |
5923 | * to notice it now, because if we try to read from the TTY | |
5924 | * again, the EOF condition will disappear. | |
5925 | * | |
5926 | * The comparison of cnt to sizeof(buf) is an optimization | |
5927 | * that prevents unnecessary calls to feof(). | |
5928 | * | |
5929 | * - jik 9/25/96 | |
5930 | */ | |
5931 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
5932 | goto screamer2; | |
79072805 | 5933 | } |
6edd2cd5 | 5934 | |
27da23d5 | 5935 | #ifdef USE_HEAP_INSTEAD_OF_STACK |
6edd2cd5 JH |
5936 | Safefree(buf); |
5937 | #endif | |
79072805 LW |
5938 | } |
5939 | ||
8bfdd7d9 | 5940 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 5941 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 5942 | i = PerlIO_getc(fp); |
79072805 | 5943 | if (i != '\n') { |
760ac839 | 5944 | PerlIO_ungetc(fp,i); |
79072805 LW |
5945 | break; |
5946 | } | |
5947 | } | |
5948 | } | |
c07a80fd | 5949 | |
efd8b2ba | 5950 | return_string_or_null: |
c07a80fd | 5951 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
5952 | } |
5953 | ||
954c1994 GS |
5954 | /* |
5955 | =for apidoc sv_inc | |
5956 | ||
645c22ef DM |
5957 | Auto-increment of the value in the SV, doing string to numeric conversion |
5958 | if necessary. Handles 'get' magic. | |
954c1994 GS |
5959 | |
5960 | =cut | |
5961 | */ | |
5962 | ||
79072805 | 5963 | void |
864dbfa3 | 5964 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
5965 | { |
5966 | register char *d; | |
463ee0b2 | 5967 | int flags; |
79072805 LW |
5968 | |
5969 | if (!sv) | |
5970 | return; | |
5b295bef | 5971 | SvGETMAGIC(sv); |
ed6116ce | 5972 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
5973 | if (SvIsCOW(sv)) |
5974 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 5975 | if (SvREADONLY(sv)) { |
923e4eb5 | 5976 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 5977 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 5978 | } |
a0d0e21e | 5979 | if (SvROK(sv)) { |
b5be31e9 | 5980 | IV i; |
9e7bc3e8 JD |
5981 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
5982 | return; | |
56431972 | 5983 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
5984 | sv_unref(sv); |
5985 | sv_setiv(sv, i); | |
a0d0e21e | 5986 | } |
ed6116ce | 5987 | } |
8990e307 | 5988 | flags = SvFLAGS(sv); |
28e5dec8 JH |
5989 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
5990 | /* It's (privately or publicly) a float, but not tested as an | |
5991 | integer, so test it to see. */ | |
d460ef45 | 5992 | (void) SvIV(sv); |
28e5dec8 JH |
5993 | flags = SvFLAGS(sv); |
5994 | } | |
5995 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
5996 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 5997 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 5998 | oops_its_int: |
59d8ce62 | 5999 | #endif |
25da4f38 IZ |
6000 | if (SvIsUV(sv)) { |
6001 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 6002 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
6003 | else |
6004 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 6005 | SvUV_set(sv, SvUVX(sv) + 1); |
25da4f38 IZ |
6006 | } else { |
6007 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 6008 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
6009 | else { |
6010 | (void)SvIOK_only(sv); | |
45977657 | 6011 | SvIV_set(sv, SvIVX(sv) + 1); |
1c846c1f | 6012 | } |
55497cff | 6013 | } |
79072805 LW |
6014 | return; |
6015 | } | |
28e5dec8 JH |
6016 | if (flags & SVp_NOK) { |
6017 | (void)SvNOK_only(sv); | |
9d6ce603 | 6018 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6019 | return; |
6020 | } | |
6021 | ||
3f7c398e | 6022 | if (!(flags & SVp_POK) || !*SvPVX_const(sv)) { |
28e5dec8 | 6023 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
f5282e15 | 6024 | sv_upgrade(sv, ((flags & SVTYPEMASK) > SVt_IV ? SVt_PVIV : SVt_IV)); |
28e5dec8 | 6025 | (void)SvIOK_only(sv); |
45977657 | 6026 | SvIV_set(sv, 1); |
79072805 LW |
6027 | return; |
6028 | } | |
463ee0b2 | 6029 | d = SvPVX(sv); |
79072805 LW |
6030 | while (isALPHA(*d)) d++; |
6031 | while (isDIGIT(*d)) d++; | |
6032 | if (*d) { | |
28e5dec8 | 6033 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 6034 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
6035 | warnings. Probably ought to make the sv_iv_please() that does |
6036 | the conversion if possible, and silently. */ | |
504618e9 | 6037 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6038 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6039 | /* Need to try really hard to see if it's an integer. | |
6040 | 9.22337203685478e+18 is an integer. | |
6041 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6042 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
6043 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
6044 | or we go insane. */ | |
d460ef45 | 6045 | |
28e5dec8 JH |
6046 | (void) sv_2iv(sv); |
6047 | if (SvIOK(sv)) | |
6048 | goto oops_its_int; | |
6049 | ||
6050 | /* sv_2iv *should* have made this an NV */ | |
6051 | if (flags & SVp_NOK) { | |
6052 | (void)SvNOK_only(sv); | |
9d6ce603 | 6053 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6054 | return; |
6055 | } | |
6056 | /* I don't think we can get here. Maybe I should assert this | |
6057 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6058 | Fall through. */ | |
6059 | #if defined(USE_LONG_DOUBLE) | |
6060 | 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 | 6061 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 6062 | #else |
1779d84d | 6063 | 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 | 6064 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
6065 | #endif |
6066 | } | |
6067 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 6068 | sv_setnv(sv,Atof(SvPVX_const(sv)) + 1.0); |
79072805 LW |
6069 | return; |
6070 | } | |
6071 | d--; | |
3f7c398e | 6072 | while (d >= SvPVX_const(sv)) { |
79072805 LW |
6073 | if (isDIGIT(*d)) { |
6074 | if (++*d <= '9') | |
6075 | return; | |
6076 | *(d--) = '0'; | |
6077 | } | |
6078 | else { | |
9d116dd7 JH |
6079 | #ifdef EBCDIC |
6080 | /* MKS: The original code here died if letters weren't consecutive. | |
6081 | * at least it didn't have to worry about non-C locales. The | |
6082 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 6083 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
6084 | * [A-Za-z] are accepted by isALPHA in the C locale. |
6085 | */ | |
6086 | if (*d != 'z' && *d != 'Z') { | |
6087 | do { ++*d; } while (!isALPHA(*d)); | |
6088 | return; | |
6089 | } | |
6090 | *(d--) -= 'z' - 'a'; | |
6091 | #else | |
79072805 LW |
6092 | ++*d; |
6093 | if (isALPHA(*d)) | |
6094 | return; | |
6095 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 6096 | #endif |
79072805 LW |
6097 | } |
6098 | } | |
6099 | /* oh,oh, the number grew */ | |
6100 | SvGROW(sv, SvCUR(sv) + 2); | |
b162af07 | 6101 | SvCUR_set(sv, SvCUR(sv) + 1); |
3f7c398e | 6102 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX_const(sv); d--) |
79072805 LW |
6103 | *d = d[-1]; |
6104 | if (isDIGIT(d[1])) | |
6105 | *d = '1'; | |
6106 | else | |
6107 | *d = d[1]; | |
6108 | } | |
6109 | ||
954c1994 GS |
6110 | /* |
6111 | =for apidoc sv_dec | |
6112 | ||
645c22ef DM |
6113 | Auto-decrement of the value in the SV, doing string to numeric conversion |
6114 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6115 | |
6116 | =cut | |
6117 | */ | |
6118 | ||
79072805 | 6119 | void |
864dbfa3 | 6120 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 6121 | { |
463ee0b2 LW |
6122 | int flags; |
6123 | ||
79072805 LW |
6124 | if (!sv) |
6125 | return; | |
5b295bef | 6126 | SvGETMAGIC(sv); |
ed6116ce | 6127 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6128 | if (SvIsCOW(sv)) |
6129 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6130 | if (SvREADONLY(sv)) { |
923e4eb5 | 6131 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 6132 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6133 | } |
a0d0e21e | 6134 | if (SvROK(sv)) { |
b5be31e9 | 6135 | IV i; |
9e7bc3e8 JD |
6136 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
6137 | return; | |
56431972 | 6138 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6139 | sv_unref(sv); |
6140 | sv_setiv(sv, i); | |
a0d0e21e | 6141 | } |
ed6116ce | 6142 | } |
28e5dec8 JH |
6143 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
6144 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 6145 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6146 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
6147 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6148 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6149 | oops_its_int: |
59d8ce62 | 6150 | #endif |
25da4f38 IZ |
6151 | if (SvIsUV(sv)) { |
6152 | if (SvUVX(sv) == 0) { | |
6153 | (void)SvIOK_only(sv); | |
45977657 | 6154 | SvIV_set(sv, -1); |
25da4f38 IZ |
6155 | } |
6156 | else { | |
6157 | (void)SvIOK_only_UV(sv); | |
f4eee32f | 6158 | SvUV_set(sv, SvUVX(sv) - 1); |
1c846c1f | 6159 | } |
25da4f38 IZ |
6160 | } else { |
6161 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 6162 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
6163 | else { |
6164 | (void)SvIOK_only(sv); | |
45977657 | 6165 | SvIV_set(sv, SvIVX(sv) - 1); |
1c846c1f | 6166 | } |
55497cff | 6167 | } |
6168 | return; | |
6169 | } | |
28e5dec8 | 6170 | if (flags & SVp_NOK) { |
9d6ce603 | 6171 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
6172 | (void)SvNOK_only(sv); |
6173 | return; | |
6174 | } | |
8990e307 | 6175 | if (!(flags & SVp_POK)) { |
ef088171 NC |
6176 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
6177 | sv_upgrade(sv, ((flags & SVTYPEMASK) > SVt_IV) ? SVt_PVIV : SVt_IV); | |
6178 | SvIV_set(sv, -1); | |
6179 | (void)SvIOK_only(sv); | |
79072805 LW |
6180 | return; |
6181 | } | |
28e5dec8 JH |
6182 | #ifdef PERL_PRESERVE_IVUV |
6183 | { | |
504618e9 | 6184 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6185 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6186 | /* Need to try really hard to see if it's an integer. | |
6187 | 9.22337203685478e+18 is an integer. | |
6188 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6189 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
6190 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
6191 | or we go insane. */ | |
d460ef45 | 6192 | |
28e5dec8 JH |
6193 | (void) sv_2iv(sv); |
6194 | if (SvIOK(sv)) | |
6195 | goto oops_its_int; | |
6196 | ||
6197 | /* sv_2iv *should* have made this an NV */ | |
6198 | if (flags & SVp_NOK) { | |
6199 | (void)SvNOK_only(sv); | |
9d6ce603 | 6200 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
6201 | return; |
6202 | } | |
6203 | /* I don't think we can get here. Maybe I should assert this | |
6204 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6205 | Fall through. */ | |
6206 | #if defined(USE_LONG_DOUBLE) | |
6207 | 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 | 6208 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 6209 | #else |
1779d84d | 6210 | 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 | 6211 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
6212 | #endif |
6213 | } | |
6214 | } | |
6215 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 6216 | sv_setnv(sv,Atof(SvPVX_const(sv)) - 1.0); /* punt */ |
79072805 LW |
6217 | } |
6218 | ||
954c1994 GS |
6219 | /* |
6220 | =for apidoc sv_mortalcopy | |
6221 | ||
645c22ef | 6222 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
6223 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
6224 | explicit call to FREETMPS, or by an implicit call at places such as | |
6225 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
6226 | |
6227 | =cut | |
6228 | */ | |
6229 | ||
79072805 LW |
6230 | /* Make a string that will exist for the duration of the expression |
6231 | * evaluation. Actually, it may have to last longer than that, but | |
6232 | * hopefully we won't free it until it has been assigned to a | |
6233 | * permanent location. */ | |
6234 | ||
6235 | SV * | |
864dbfa3 | 6236 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 6237 | { |
463ee0b2 | 6238 | register SV *sv; |
b881518d | 6239 | |
4561caa4 | 6240 | new_SV(sv); |
79072805 | 6241 | sv_setsv(sv,oldstr); |
677b06e3 GS |
6242 | EXTEND_MORTAL(1); |
6243 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
6244 | SvTEMP_on(sv); |
6245 | return sv; | |
6246 | } | |
6247 | ||
954c1994 GS |
6248 | /* |
6249 | =for apidoc sv_newmortal | |
6250 | ||
645c22ef | 6251 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
6252 | set to 1. It will be destroyed "soon", either by an explicit call to |
6253 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
6254 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
6255 | |
6256 | =cut | |
6257 | */ | |
6258 | ||
8990e307 | 6259 | SV * |
864dbfa3 | 6260 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
6261 | { |
6262 | register SV *sv; | |
6263 | ||
4561caa4 | 6264 | new_SV(sv); |
8990e307 | 6265 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
6266 | EXTEND_MORTAL(1); |
6267 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
6268 | return sv; |
6269 | } | |
6270 | ||
954c1994 GS |
6271 | /* |
6272 | =for apidoc sv_2mortal | |
6273 | ||
d4236ebc DM |
6274 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
6275 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
6276 | statement boundaries. SvTEMP() is turned on which means that the SV's |
6277 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
6278 | and C<sv_mortalcopy>. | |
954c1994 GS |
6279 | |
6280 | =cut | |
6281 | */ | |
6282 | ||
79072805 | 6283 | SV * |
864dbfa3 | 6284 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 | 6285 | { |
27da23d5 | 6286 | dVAR; |
79072805 LW |
6287 | if (!sv) |
6288 | return sv; | |
d689ffdd | 6289 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 6290 | return sv; |
677b06e3 GS |
6291 | EXTEND_MORTAL(1); |
6292 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 6293 | SvTEMP_on(sv); |
79072805 LW |
6294 | return sv; |
6295 | } | |
6296 | ||
954c1994 GS |
6297 | /* |
6298 | =for apidoc newSVpv | |
6299 | ||
6300 | Creates a new SV and copies a string into it. The reference count for the | |
6301 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
6302 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
6303 | ||
6304 | =cut | |
6305 | */ | |
6306 | ||
79072805 | 6307 | SV * |
864dbfa3 | 6308 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 6309 | { |
463ee0b2 | 6310 | register SV *sv; |
79072805 | 6311 | |
4561caa4 | 6312 | new_SV(sv); |
616d8c9c | 6313 | sv_setpvn(sv,s,len ? len : strlen(s)); |
79072805 LW |
6314 | return sv; |
6315 | } | |
6316 | ||
954c1994 GS |
6317 | /* |
6318 | =for apidoc newSVpvn | |
6319 | ||
6320 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 6321 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 6322 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 6323 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
6324 | |
6325 | =cut | |
6326 | */ | |
6327 | ||
9da1e3b5 | 6328 | SV * |
864dbfa3 | 6329 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
6330 | { |
6331 | register SV *sv; | |
6332 | ||
6333 | new_SV(sv); | |
9da1e3b5 MUN |
6334 | sv_setpvn(sv,s,len); |
6335 | return sv; | |
6336 | } | |
6337 | ||
bd08039b NC |
6338 | |
6339 | /* | |
926f8064 | 6340 | =for apidoc newSVhek |
bd08039b NC |
6341 | |
6342 | Creates a new SV from the hash key structure. It will generate scalars that | |
5aaec2b4 NC |
6343 | point to the shared string table where possible. Returns a new (undefined) |
6344 | SV if the hek is NULL. | |
bd08039b NC |
6345 | |
6346 | =cut | |
6347 | */ | |
6348 | ||
6349 | SV * | |
c1b02ed8 | 6350 | Perl_newSVhek(pTHX_ const HEK *hek) |
bd08039b | 6351 | { |
5aaec2b4 NC |
6352 | if (!hek) { |
6353 | SV *sv; | |
6354 | ||
6355 | new_SV(sv); | |
6356 | return sv; | |
6357 | } | |
6358 | ||
bd08039b NC |
6359 | if (HEK_LEN(hek) == HEf_SVKEY) { |
6360 | return newSVsv(*(SV**)HEK_KEY(hek)); | |
6361 | } else { | |
6362 | const int flags = HEK_FLAGS(hek); | |
6363 | if (flags & HVhek_WASUTF8) { | |
6364 | /* Trouble :-) | |
6365 | Andreas would like keys he put in as utf8 to come back as utf8 | |
6366 | */ | |
6367 | STRLEN utf8_len = HEK_LEN(hek); | |
b64e5050 AL |
6368 | const U8 *as_utf8 = bytes_to_utf8 ((U8*)HEK_KEY(hek), &utf8_len); |
6369 | SV * const sv = newSVpvn ((const char*)as_utf8, utf8_len); | |
bd08039b NC |
6370 | |
6371 | SvUTF8_on (sv); | |
6372 | Safefree (as_utf8); /* bytes_to_utf8() allocates a new string */ | |
6373 | return sv; | |
6374 | } else if (flags & HVhek_REHASH) { | |
6375 | /* We don't have a pointer to the hv, so we have to replicate the | |
6376 | flag into every HEK. This hv is using custom a hasing | |
6377 | algorithm. Hence we can't return a shared string scalar, as | |
6378 | that would contain the (wrong) hash value, and might get passed | |
6379 | into an hv routine with a regular hash */ | |
6380 | ||
b64e5050 | 6381 | SV * const sv = newSVpvn (HEK_KEY(hek), HEK_LEN(hek)); |
bd08039b NC |
6382 | if (HEK_UTF8(hek)) |
6383 | SvUTF8_on (sv); | |
6384 | return sv; | |
6385 | } | |
6386 | /* This will be overwhelminly the most common case. */ | |
6387 | return newSVpvn_share(HEK_KEY(hek), | |
6388 | (HEK_UTF8(hek) ? -HEK_LEN(hek) : HEK_LEN(hek)), | |
6389 | HEK_HASH(hek)); | |
6390 | } | |
6391 | } | |
6392 | ||
1c846c1f NIS |
6393 | /* |
6394 | =for apidoc newSVpvn_share | |
6395 | ||
3f7c398e | 6396 | Creates a new SV with its SvPVX_const pointing to a shared string in the string |
645c22ef DM |
6397 | table. If the string does not already exist in the table, it is created |
6398 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
6399 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
6400 | otherwise the hash is computed. The idea here is that as the string table | |
3f7c398e | 6401 | is used for shared hash keys these strings will have SvPVX_const == HeKEY and |
645c22ef | 6402 | hash lookup will avoid string compare. |
1c846c1f NIS |
6403 | |
6404 | =cut | |
6405 | */ | |
6406 | ||
6407 | SV * | |
c3654f1a | 6408 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
6409 | { |
6410 | register SV *sv; | |
c3654f1a IH |
6411 | bool is_utf8 = FALSE; |
6412 | if (len < 0) { | |
77caf834 | 6413 | STRLEN tmplen = -len; |
c3654f1a | 6414 | is_utf8 = TRUE; |
75a54232 | 6415 | /* See the note in hv.c:hv_fetch() --jhi */ |
e1ec3a88 | 6416 | src = (char*)bytes_from_utf8((const U8*)src, &tmplen, &is_utf8); |
75a54232 JH |
6417 | len = tmplen; |
6418 | } | |
1c846c1f | 6419 | if (!hash) |
5afd6d42 | 6420 | PERL_HASH(hash, src, len); |
1c846c1f | 6421 | new_SV(sv); |
bdd68bc3 | 6422 | sv_upgrade(sv, SVt_PV); |
f880fe2f | 6423 | SvPV_set(sv, sharepvn(src, is_utf8?-len:len, hash)); |
b162af07 | 6424 | SvCUR_set(sv, len); |
b162af07 | 6425 | SvLEN_set(sv, 0); |
1c846c1f NIS |
6426 | SvREADONLY_on(sv); |
6427 | SvFAKE_on(sv); | |
6428 | SvPOK_on(sv); | |
c3654f1a IH |
6429 | if (is_utf8) |
6430 | SvUTF8_on(sv); | |
1c846c1f NIS |
6431 | return sv; |
6432 | } | |
6433 | ||
645c22ef | 6434 | |
cea2e8a9 | 6435 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
6436 | |
6437 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
6438 | * version of the main function, (which may itself be aliased to us). | |
6439 | * Don't access this version directly. | |
6440 | */ | |
6441 | ||
46fc3d4c | 6442 | SV * |
cea2e8a9 | 6443 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 6444 | { |
cea2e8a9 | 6445 | dTHX; |
46fc3d4c | 6446 | register SV *sv; |
6447 | va_list args; | |
46fc3d4c | 6448 | va_start(args, pat); |
c5be433b | 6449 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 6450 | va_end(args); |
6451 | return sv; | |
6452 | } | |
cea2e8a9 | 6453 | #endif |
46fc3d4c | 6454 | |
954c1994 GS |
6455 | /* |
6456 | =for apidoc newSVpvf | |
6457 | ||
645c22ef | 6458 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
6459 | C<sprintf>. |
6460 | ||
6461 | =cut | |
6462 | */ | |
6463 | ||
cea2e8a9 GS |
6464 | SV * |
6465 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
6466 | { | |
6467 | register SV *sv; | |
6468 | va_list args; | |
cea2e8a9 | 6469 | va_start(args, pat); |
c5be433b | 6470 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
6471 | va_end(args); |
6472 | return sv; | |
6473 | } | |
46fc3d4c | 6474 | |
645c22ef DM |
6475 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
6476 | ||
79072805 | 6477 | SV * |
c5be433b GS |
6478 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
6479 | { | |
6480 | register SV *sv; | |
6481 | new_SV(sv); | |
6482 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
6483 | return sv; | |
6484 | } | |
6485 | ||
954c1994 GS |
6486 | /* |
6487 | =for apidoc newSVnv | |
6488 | ||
6489 | Creates a new SV and copies a floating point value into it. | |
6490 | The reference count for the SV is set to 1. | |
6491 | ||
6492 | =cut | |
6493 | */ | |
6494 | ||
c5be433b | 6495 | SV * |
65202027 | 6496 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 6497 | { |
463ee0b2 | 6498 | register SV *sv; |
79072805 | 6499 | |
4561caa4 | 6500 | new_SV(sv); |
79072805 LW |
6501 | sv_setnv(sv,n); |
6502 | return sv; | |
6503 | } | |
6504 | ||
954c1994 GS |
6505 | /* |
6506 | =for apidoc newSViv | |
6507 | ||
6508 | Creates a new SV and copies an integer into it. The reference count for the | |
6509 | SV is set to 1. | |
6510 | ||
6511 | =cut | |
6512 | */ | |
6513 | ||
79072805 | 6514 | SV * |
864dbfa3 | 6515 | Perl_newSViv(pTHX_ IV i) |
79072805 | 6516 | { |
463ee0b2 | 6517 | register SV *sv; |
79072805 | 6518 | |
4561caa4 | 6519 | new_SV(sv); |
79072805 LW |
6520 | sv_setiv(sv,i); |
6521 | return sv; | |
6522 | } | |
6523 | ||
954c1994 | 6524 | /* |
1a3327fb JH |
6525 | =for apidoc newSVuv |
6526 | ||
6527 | Creates a new SV and copies an unsigned integer into it. | |
6528 | The reference count for the SV is set to 1. | |
6529 | ||
6530 | =cut | |
6531 | */ | |
6532 | ||
6533 | SV * | |
6534 | Perl_newSVuv(pTHX_ UV u) | |
6535 | { | |
6536 | register SV *sv; | |
6537 | ||
6538 | new_SV(sv); | |
6539 | sv_setuv(sv,u); | |
6540 | return sv; | |
6541 | } | |
6542 | ||
6543 | /* | |
954c1994 GS |
6544 | =for apidoc newRV_noinc |
6545 | ||
6546 | Creates an RV wrapper for an SV. The reference count for the original | |
6547 | SV is B<not> incremented. | |
6548 | ||
6549 | =cut | |
6550 | */ | |
6551 | ||
2304df62 | 6552 | SV * |
864dbfa3 | 6553 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
6554 | { |
6555 | register SV *sv; | |
6556 | ||
4561caa4 | 6557 | new_SV(sv); |
2304df62 | 6558 | sv_upgrade(sv, SVt_RV); |
76e3520e | 6559 | SvTEMP_off(tmpRef); |
b162af07 | 6560 | SvRV_set(sv, tmpRef); |
2304df62 | 6561 | SvROK_on(sv); |
2304df62 AD |
6562 | return sv; |
6563 | } | |
6564 | ||
ff276b08 | 6565 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
6566 | * newRV_inc is in fact #defined to newRV in sv.h |
6567 | */ | |
6568 | ||
5f05dabc | 6569 | SV * |
864dbfa3 | 6570 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 6571 | { |
5f6447b6 | 6572 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 6573 | } |
5f05dabc | 6574 | |
954c1994 GS |
6575 | /* |
6576 | =for apidoc newSVsv | |
6577 | ||
6578 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 6579 | (Uses C<sv_setsv>). |
954c1994 GS |
6580 | |
6581 | =cut | |
6582 | */ | |
6583 | ||
79072805 | 6584 | SV * |
864dbfa3 | 6585 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 6586 | { |
463ee0b2 | 6587 | register SV *sv; |
79072805 LW |
6588 | |
6589 | if (!old) | |
6590 | return Nullsv; | |
8990e307 | 6591 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 6592 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 6593 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
6594 | return Nullsv; |
6595 | } | |
4561caa4 | 6596 | new_SV(sv); |
e90aabeb NC |
6597 | /* SV_GMAGIC is the default for sv_setv() |
6598 | SV_NOSTEAL prevents TEMP buffers being, well, stolen, and saves games | |
6599 | with SvTEMP_off and SvTEMP_on round a call to sv_setsv. */ | |
6600 | sv_setsv_flags(sv, old, SV_GMAGIC | SV_NOSTEAL); | |
463ee0b2 | 6601 | return sv; |
79072805 LW |
6602 | } |
6603 | ||
645c22ef DM |
6604 | /* |
6605 | =for apidoc sv_reset | |
6606 | ||
6607 | Underlying implementation for the C<reset> Perl function. | |
6608 | Note that the perl-level function is vaguely deprecated. | |
6609 | ||
6610 | =cut | |
6611 | */ | |
6612 | ||
79072805 | 6613 | void |
e1ec3a88 | 6614 | Perl_sv_reset(pTHX_ register const char *s, HV *stash) |
79072805 | 6615 | { |
27da23d5 | 6616 | dVAR; |
4802d5d7 | 6617 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 6618 | |
49d8d3a1 MB |
6619 | if (!stash) |
6620 | return; | |
6621 | ||
79072805 | 6622 | if (!*s) { /* reset ?? searches */ |
aec46f14 | 6623 | MAGIC * const mg = mg_find((SV *)stash, PERL_MAGIC_symtab); |
8d2f4536 NC |
6624 | if (mg) { |
6625 | PMOP *pm = (PMOP *) mg->mg_obj; | |
6626 | while (pm) { | |
6627 | pm->op_pmdynflags &= ~PMdf_USED; | |
6628 | pm = pm->op_pmnext; | |
6629 | } | |
79072805 LW |
6630 | } |
6631 | return; | |
6632 | } | |
6633 | ||
6634 | /* reset variables */ | |
6635 | ||
6636 | if (!HvARRAY(stash)) | |
6637 | return; | |
463ee0b2 LW |
6638 | |
6639 | Zero(todo, 256, char); | |
79072805 | 6640 | while (*s) { |
b464bac0 AL |
6641 | I32 max; |
6642 | I32 i = (unsigned char)*s; | |
79072805 LW |
6643 | if (s[1] == '-') { |
6644 | s += 2; | |
6645 | } | |
4802d5d7 | 6646 | max = (unsigned char)*s++; |
79072805 | 6647 | for ( ; i <= max; i++) { |
463ee0b2 LW |
6648 | todo[i] = 1; |
6649 | } | |
a0d0e21e | 6650 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
b464bac0 | 6651 | HE *entry; |
79072805 | 6652 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
6653 | entry; |
6654 | entry = HeNEXT(entry)) | |
6655 | { | |
b464bac0 AL |
6656 | register GV *gv; |
6657 | register SV *sv; | |
6658 | ||
1edc1566 | 6659 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 6660 | continue; |
1edc1566 | 6661 | gv = (GV*)HeVAL(entry); |
79072805 | 6662 | sv = GvSV(gv); |
e203899d NC |
6663 | if (sv) { |
6664 | if (SvTHINKFIRST(sv)) { | |
6665 | if (!SvREADONLY(sv) && SvROK(sv)) | |
6666 | sv_unref(sv); | |
6667 | /* XXX Is this continue a bug? Why should THINKFIRST | |
6668 | exempt us from resetting arrays and hashes? */ | |
6669 | continue; | |
6670 | } | |
6671 | SvOK_off(sv); | |
6672 | if (SvTYPE(sv) >= SVt_PV) { | |
6673 | SvCUR_set(sv, 0); | |
6674 | if (SvPVX_const(sv) != Nullch) | |
6675 | *SvPVX(sv) = '\0'; | |
6676 | SvTAINT(sv); | |
6677 | } | |
79072805 LW |
6678 | } |
6679 | if (GvAV(gv)) { | |
6680 | av_clear(GvAV(gv)); | |
6681 | } | |
bfcb3514 | 6682 | if (GvHV(gv) && !HvNAME_get(GvHV(gv))) { |
b0269e46 AB |
6683 | #if defined(VMS) |
6684 | Perl_die(aTHX_ "Can't reset %%ENV on this system"); | |
6685 | #else /* ! VMS */ | |
463ee0b2 | 6686 | hv_clear(GvHV(gv)); |
b0269e46 AB |
6687 | # if defined(USE_ENVIRON_ARRAY) |
6688 | if (gv == PL_envgv) | |
6689 | my_clearenv(); | |
6690 | # endif /* USE_ENVIRON_ARRAY */ | |
6691 | #endif /* VMS */ | |
79072805 LW |
6692 | } |
6693 | } | |
6694 | } | |
6695 | } | |
6696 | } | |
6697 | ||
645c22ef DM |
6698 | /* |
6699 | =for apidoc sv_2io | |
6700 | ||
6701 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
6702 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
6703 | named after the PV if we're a string. | |
6704 | ||
6705 | =cut | |
6706 | */ | |
6707 | ||
46fc3d4c | 6708 | IO* |
864dbfa3 | 6709 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 6710 | { |
6711 | IO* io; | |
6712 | GV* gv; | |
6713 | ||
6714 | switch (SvTYPE(sv)) { | |
6715 | case SVt_PVIO: | |
6716 | io = (IO*)sv; | |
6717 | break; | |
6718 | case SVt_PVGV: | |
6719 | gv = (GV*)sv; | |
6720 | io = GvIO(gv); | |
6721 | if (!io) | |
cea2e8a9 | 6722 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 6723 | break; |
6724 | default: | |
6725 | if (!SvOK(sv)) | |
cea2e8a9 | 6726 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 6727 | if (SvROK(sv)) |
6728 | return sv_2io(SvRV(sv)); | |
7a5fd60d | 6729 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
46fc3d4c | 6730 | if (gv) |
6731 | io = GvIO(gv); | |
6732 | else | |
6733 | io = 0; | |
6734 | if (!io) | |
35c1215d | 6735 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 6736 | break; |
6737 | } | |
6738 | return io; | |
6739 | } | |
6740 | ||
645c22ef DM |
6741 | /* |
6742 | =for apidoc sv_2cv | |
6743 | ||
6744 | Using various gambits, try to get a CV from an SV; in addition, try if | |
6745 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
6746 | ||
6747 | =cut | |
6748 | */ | |
6749 | ||
79072805 | 6750 | CV * |
864dbfa3 | 6751 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 6752 | { |
27da23d5 | 6753 | dVAR; |
c04a4dfe JH |
6754 | GV *gv = Nullgv; |
6755 | CV *cv = Nullcv; | |
79072805 LW |
6756 | |
6757 | if (!sv) | |
93a17b20 | 6758 | return *gvp = Nullgv, Nullcv; |
79072805 | 6759 | switch (SvTYPE(sv)) { |
79072805 LW |
6760 | case SVt_PVCV: |
6761 | *st = CvSTASH(sv); | |
6762 | *gvp = Nullgv; | |
6763 | return (CV*)sv; | |
6764 | case SVt_PVHV: | |
6765 | case SVt_PVAV: | |
6766 | *gvp = Nullgv; | |
6767 | return Nullcv; | |
8990e307 LW |
6768 | case SVt_PVGV: |
6769 | gv = (GV*)sv; | |
a0d0e21e | 6770 | *gvp = gv; |
8990e307 LW |
6771 | *st = GvESTASH(gv); |
6772 | goto fix_gv; | |
6773 | ||
79072805 | 6774 | default: |
5b295bef | 6775 | SvGETMAGIC(sv); |
a0d0e21e | 6776 | if (SvROK(sv)) { |
823a54a3 | 6777 | SV * const *sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
f5284f61 IZ |
6778 | tryAMAGICunDEREF(to_cv); |
6779 | ||
62f274bf GS |
6780 | sv = SvRV(sv); |
6781 | if (SvTYPE(sv) == SVt_PVCV) { | |
6782 | cv = (CV*)sv; | |
6783 | *gvp = Nullgv; | |
6784 | *st = CvSTASH(cv); | |
6785 | return cv; | |
6786 | } | |
6787 | else if(isGV(sv)) | |
6788 | gv = (GV*)sv; | |
6789 | else | |
cea2e8a9 | 6790 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 6791 | } |
62f274bf | 6792 | else if (isGV(sv)) |
79072805 LW |
6793 | gv = (GV*)sv; |
6794 | else | |
7a5fd60d | 6795 | gv = gv_fetchsv(sv, lref, SVt_PVCV); |
79072805 LW |
6796 | *gvp = gv; |
6797 | if (!gv) | |
6798 | return Nullcv; | |
6799 | *st = GvESTASH(gv); | |
8990e307 | 6800 | fix_gv: |
8ebc5c01 | 6801 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 6802 | SV *tmpsv; |
748a9306 | 6803 | ENTER; |
4633a7c4 | 6804 | tmpsv = NEWSV(704,0); |
16660edb | 6805 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
6806 | /* XXX this is probably not what they think they're getting. |
6807 | * It has the same effect as "sub name;", i.e. just a forward | |
6808 | * declaration! */ | |
774d564b | 6809 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
6810 | newSVOP(OP_CONST, 0, tmpsv), |
6811 | Nullop, | |
8990e307 | 6812 | Nullop); |
748a9306 | 6813 | LEAVE; |
8ebc5c01 | 6814 | if (!GvCVu(gv)) |
35c1215d NC |
6815 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
6816 | sv); | |
8990e307 | 6817 | } |
8ebc5c01 | 6818 | return GvCVu(gv); |
79072805 LW |
6819 | } |
6820 | } | |
6821 | ||
c461cf8f JH |
6822 | /* |
6823 | =for apidoc sv_true | |
6824 | ||
6825 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
6826 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
6827 | instead use an in-line version. | |
c461cf8f JH |
6828 | |
6829 | =cut | |
6830 | */ | |
6831 | ||
79072805 | 6832 | I32 |
864dbfa3 | 6833 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 6834 | { |
8990e307 LW |
6835 | if (!sv) |
6836 | return 0; | |
79072805 | 6837 | if (SvPOK(sv)) { |
823a54a3 AL |
6838 | register const XPV* const tXpv = (XPV*)SvANY(sv); |
6839 | if (tXpv && | |
c2f1de04 | 6840 | (tXpv->xpv_cur > 1 || |
339049b0 | 6841 | (tXpv->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
79072805 LW |
6842 | return 1; |
6843 | else | |
6844 | return 0; | |
6845 | } | |
6846 | else { | |
6847 | if (SvIOK(sv)) | |
463ee0b2 | 6848 | return SvIVX(sv) != 0; |
79072805 LW |
6849 | else { |
6850 | if (SvNOK(sv)) | |
463ee0b2 | 6851 | return SvNVX(sv) != 0.0; |
79072805 | 6852 | else |
463ee0b2 | 6853 | return sv_2bool(sv); |
79072805 LW |
6854 | } |
6855 | } | |
6856 | } | |
79072805 | 6857 | |
645c22ef | 6858 | /* |
c461cf8f JH |
6859 | =for apidoc sv_pvn_force |
6860 | ||
6861 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
6862 | A private implementation of the C<SvPV_force> macro for compilers which |
6863 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 6864 | |
8d6d96c1 HS |
6865 | =for apidoc sv_pvn_force_flags |
6866 | ||
6867 | Get a sensible string out of the SV somehow. | |
6868 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
6869 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
6870 | implemented in terms of this function. | |
645c22ef DM |
6871 | You normally want to use the various wrapper macros instead: see |
6872 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
6873 | |
6874 | =cut | |
6875 | */ | |
6876 | ||
6877 | char * | |
6878 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
6879 | { | |
a0d0e21e | 6880 | |
6fc92669 | 6881 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 6882 | sv_force_normal_flags(sv, 0); |
1c846c1f | 6883 | |
a0d0e21e | 6884 | if (SvPOK(sv)) { |
13c5b33c NC |
6885 | if (lp) |
6886 | *lp = SvCUR(sv); | |
a0d0e21e LW |
6887 | } |
6888 | else { | |
a3b680e6 | 6889 | char *s; |
13c5b33c NC |
6890 | STRLEN len; |
6891 | ||
4d84ee25 | 6892 | if (SvREADONLY(sv) && !(flags & SV_MUTABLE_RETURN)) { |
b64e5050 | 6893 | const char * const ref = sv_reftype(sv,0); |
4d84ee25 NC |
6894 | if (PL_op) |
6895 | Perl_croak(aTHX_ "Can't coerce readonly %s to string in %s", | |
b64e5050 | 6896 | ref, OP_NAME(PL_op)); |
4d84ee25 | 6897 | else |
b64e5050 | 6898 | Perl_croak(aTHX_ "Can't coerce readonly %s to string", ref); |
4d84ee25 | 6899 | } |
b64e5050 | 6900 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) |
cea2e8a9 | 6901 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 6902 | OP_NAME(PL_op)); |
b64e5050 | 6903 | s = sv_2pv_flags(sv, &len, flags); |
13c5b33c NC |
6904 | if (lp) |
6905 | *lp = len; | |
6906 | ||
3f7c398e | 6907 | if (s != SvPVX_const(sv)) { /* Almost, but not quite, sv_setpvn() */ |
a0d0e21e LW |
6908 | if (SvROK(sv)) |
6909 | sv_unref(sv); | |
862a34c6 | 6910 | SvUPGRADE(sv, SVt_PV); /* Never FALSE */ |
a0d0e21e | 6911 | SvGROW(sv, len + 1); |
706aa1c9 | 6912 | Move(s,SvPVX(sv),len,char); |
a0d0e21e LW |
6913 | SvCUR_set(sv, len); |
6914 | *SvEND(sv) = '\0'; | |
6915 | } | |
6916 | if (!SvPOK(sv)) { | |
6917 | SvPOK_on(sv); /* validate pointer */ | |
6918 | SvTAINT(sv); | |
1d7c1841 | 6919 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 6920 | PTR2UV(sv),SvPVX_const(sv))); |
a0d0e21e LW |
6921 | } |
6922 | } | |
4d84ee25 | 6923 | return SvPVX_mutable(sv); |
a0d0e21e LW |
6924 | } |
6925 | ||
645c22ef | 6926 | /* |
645c22ef DM |
6927 | =for apidoc sv_pvbyten_force |
6928 | ||
0feed65a | 6929 | The backend for the C<SvPVbytex_force> macro. Always use the macro instead. |
645c22ef DM |
6930 | |
6931 | =cut | |
6932 | */ | |
6933 | ||
7340a771 GS |
6934 | char * |
6935 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
6936 | { | |
46ec2f14 | 6937 | sv_pvn_force(sv,lp); |
ffebcc3e | 6938 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
6939 | *lp = SvCUR(sv); |
6940 | return SvPVX(sv); | |
7340a771 GS |
6941 | } |
6942 | ||
645c22ef | 6943 | /* |
c461cf8f JH |
6944 | =for apidoc sv_pvutf8n_force |
6945 | ||
0feed65a | 6946 | The backend for the C<SvPVutf8x_force> macro. Always use the macro instead. |
c461cf8f JH |
6947 | |
6948 | =cut | |
6949 | */ | |
6950 | ||
7340a771 GS |
6951 | char * |
6952 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
6953 | { | |
46ec2f14 | 6954 | sv_pvn_force(sv,lp); |
560a288e | 6955 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
6956 | *lp = SvCUR(sv); |
6957 | return SvPVX(sv); | |
7340a771 GS |
6958 | } |
6959 | ||
c461cf8f JH |
6960 | /* |
6961 | =for apidoc sv_reftype | |
6962 | ||
6963 | Returns a string describing what the SV is a reference to. | |
6964 | ||
6965 | =cut | |
6966 | */ | |
6967 | ||
1cb0ed9b | 6968 | char * |
bfed75c6 | 6969 | Perl_sv_reftype(pTHX_ const SV *sv, int ob) |
a0d0e21e | 6970 | { |
07409e01 NC |
6971 | /* The fact that I don't need to downcast to char * everywhere, only in ?: |
6972 | inside return suggests a const propagation bug in g++. */ | |
c86bf373 | 6973 | if (ob && SvOBJECT(sv)) { |
1b6737cc | 6974 | char * const name = HvNAME_get(SvSTASH(sv)); |
07409e01 | 6975 | return name ? name : (char *) "__ANON__"; |
c86bf373 | 6976 | } |
a0d0e21e LW |
6977 | else { |
6978 | switch (SvTYPE(sv)) { | |
6979 | case SVt_NULL: | |
6980 | case SVt_IV: | |
6981 | case SVt_NV: | |
6982 | case SVt_RV: | |
6983 | case SVt_PV: | |
6984 | case SVt_PVIV: | |
6985 | case SVt_PVNV: | |
6986 | case SVt_PVMG: | |
6987 | case SVt_PVBM: | |
1cb0ed9b | 6988 | if (SvVOK(sv)) |
439cb1c4 | 6989 | return "VSTRING"; |
a0d0e21e LW |
6990 | if (SvROK(sv)) |
6991 | return "REF"; | |
6992 | else | |
6993 | return "SCALAR"; | |
1cb0ed9b | 6994 | |
07409e01 | 6995 | case SVt_PVLV: return (char *) (SvROK(sv) ? "REF" |
be65207d DM |
6996 | /* tied lvalues should appear to be |
6997 | * scalars for backwards compatitbility */ | |
6998 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
07409e01 | 6999 | ? "SCALAR" : "LVALUE"); |
a0d0e21e LW |
7000 | case SVt_PVAV: return "ARRAY"; |
7001 | case SVt_PVHV: return "HASH"; | |
7002 | case SVt_PVCV: return "CODE"; | |
7003 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 7004 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 7005 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
7006 | default: return "UNKNOWN"; |
7007 | } | |
7008 | } | |
7009 | } | |
7010 | ||
954c1994 GS |
7011 | /* |
7012 | =for apidoc sv_isobject | |
7013 | ||
7014 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
7015 | object. If the SV is not an RV, or if the object is not blessed, then this | |
7016 | will return false. | |
7017 | ||
7018 | =cut | |
7019 | */ | |
7020 | ||
463ee0b2 | 7021 | int |
864dbfa3 | 7022 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 7023 | { |
68dc0745 | 7024 | if (!sv) |
7025 | return 0; | |
5b295bef | 7026 | SvGETMAGIC(sv); |
85e6fe83 LW |
7027 | if (!SvROK(sv)) |
7028 | return 0; | |
7029 | sv = (SV*)SvRV(sv); | |
7030 | if (!SvOBJECT(sv)) | |
7031 | return 0; | |
7032 | return 1; | |
7033 | } | |
7034 | ||
954c1994 GS |
7035 | /* |
7036 | =for apidoc sv_isa | |
7037 | ||
7038 | Returns a boolean indicating whether the SV is blessed into the specified | |
7039 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
7040 | an inheritance relationship. | |
7041 | ||
7042 | =cut | |
7043 | */ | |
7044 | ||
85e6fe83 | 7045 | int |
864dbfa3 | 7046 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 7047 | { |
bfcb3514 | 7048 | const char *hvname; |
68dc0745 | 7049 | if (!sv) |
7050 | return 0; | |
5b295bef | 7051 | SvGETMAGIC(sv); |
ed6116ce | 7052 | if (!SvROK(sv)) |
463ee0b2 | 7053 | return 0; |
ed6116ce LW |
7054 | sv = (SV*)SvRV(sv); |
7055 | if (!SvOBJECT(sv)) | |
463ee0b2 | 7056 | return 0; |
bfcb3514 NC |
7057 | hvname = HvNAME_get(SvSTASH(sv)); |
7058 | if (!hvname) | |
e27ad1f2 | 7059 | return 0; |
463ee0b2 | 7060 | |
bfcb3514 | 7061 | return strEQ(hvname, name); |
463ee0b2 LW |
7062 | } |
7063 | ||
954c1994 GS |
7064 | /* |
7065 | =for apidoc newSVrv | |
7066 | ||
7067 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
7068 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
7069 | be blessed in the specified package. The new SV is returned and its | |
7070 | reference count is 1. | |
7071 | ||
7072 | =cut | |
7073 | */ | |
7074 | ||
463ee0b2 | 7075 | SV* |
864dbfa3 | 7076 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 7077 | { |
463ee0b2 LW |
7078 | SV *sv; |
7079 | ||
4561caa4 | 7080 | new_SV(sv); |
51cf62d8 | 7081 | |
765f542d | 7082 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 7083 | SvAMAGIC_off(rv); |
51cf62d8 | 7084 | |
0199fce9 | 7085 | if (SvTYPE(rv) >= SVt_PVMG) { |
a3b680e6 | 7086 | const U32 refcnt = SvREFCNT(rv); |
0199fce9 JD |
7087 | SvREFCNT(rv) = 0; |
7088 | sv_clear(rv); | |
7089 | SvFLAGS(rv) = 0; | |
7090 | SvREFCNT(rv) = refcnt; | |
7091 | } | |
7092 | ||
51cf62d8 | 7093 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
7094 | sv_upgrade(rv, SVt_RV); |
7095 | else if (SvTYPE(rv) > SVt_RV) { | |
8bd4d4c5 | 7096 | SvPV_free(rv); |
0199fce9 JD |
7097 | SvCUR_set(rv, 0); |
7098 | SvLEN_set(rv, 0); | |
7099 | } | |
51cf62d8 | 7100 | |
0c34ef67 | 7101 | SvOK_off(rv); |
b162af07 | 7102 | SvRV_set(rv, sv); |
ed6116ce | 7103 | SvROK_on(rv); |
463ee0b2 | 7104 | |
a0d0e21e | 7105 | if (classname) { |
1b6737cc | 7106 | HV* const stash = gv_stashpv(classname, TRUE); |
a0d0e21e LW |
7107 | (void)sv_bless(rv, stash); |
7108 | } | |
7109 | return sv; | |
7110 | } | |
7111 | ||
954c1994 GS |
7112 | /* |
7113 | =for apidoc sv_setref_pv | |
7114 | ||
7115 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
7116 | argument will be upgraded to an RV. That RV will be modified to point to | |
7117 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
7118 | into the SV. The C<classname> argument indicates the package for the | |
7119 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 7120 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7121 | |
7122 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
7123 | objects will become corrupted by the pointer copy process. | |
7124 | ||
7125 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
7126 | ||
7127 | =cut | |
7128 | */ | |
7129 | ||
a0d0e21e | 7130 | SV* |
864dbfa3 | 7131 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 7132 | { |
189b2af5 | 7133 | if (!pv) { |
3280af22 | 7134 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
7135 | SvSETMAGIC(rv); |
7136 | } | |
a0d0e21e | 7137 | else |
56431972 | 7138 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
7139 | return rv; |
7140 | } | |
7141 | ||
954c1994 GS |
7142 | /* |
7143 | =for apidoc sv_setref_iv | |
7144 | ||
7145 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
7146 | argument will be upgraded to an RV. That RV will be modified to point to | |
7147 | the new SV. The C<classname> argument indicates the package for the | |
7148 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 7149 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7150 | |
7151 | =cut | |
7152 | */ | |
7153 | ||
a0d0e21e | 7154 | SV* |
864dbfa3 | 7155 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
7156 | { |
7157 | sv_setiv(newSVrv(rv,classname), iv); | |
7158 | return rv; | |
7159 | } | |
7160 | ||
954c1994 | 7161 | /* |
e1c57cef JH |
7162 | =for apidoc sv_setref_uv |
7163 | ||
7164 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
7165 | argument will be upgraded to an RV. That RV will be modified to point to | |
7166 | the new SV. The C<classname> argument indicates the package for the | |
7167 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 7168 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
7169 | |
7170 | =cut | |
7171 | */ | |
7172 | ||
7173 | SV* | |
7174 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
7175 | { | |
7176 | sv_setuv(newSVrv(rv,classname), uv); | |
7177 | return rv; | |
7178 | } | |
7179 | ||
7180 | /* | |
954c1994 GS |
7181 | =for apidoc sv_setref_nv |
7182 | ||
7183 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
7184 | argument will be upgraded to an RV. That RV will be modified to point to | |
7185 | the new SV. The C<classname> argument indicates the package for the | |
7186 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 7187 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7188 | |
7189 | =cut | |
7190 | */ | |
7191 | ||
a0d0e21e | 7192 | SV* |
65202027 | 7193 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
7194 | { |
7195 | sv_setnv(newSVrv(rv,classname), nv); | |
7196 | return rv; | |
7197 | } | |
463ee0b2 | 7198 | |
954c1994 GS |
7199 | /* |
7200 | =for apidoc sv_setref_pvn | |
7201 | ||
7202 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
7203 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
7204 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
7205 | argument indicates the package for the blessing. Set C<classname> to | |
7a5fa8a2 | 7206 | C<Nullch> to avoid the blessing. The new SV will have a reference count |
d34c2299 | 7207 | of 1, and the RV will be returned. |
954c1994 GS |
7208 | |
7209 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
7210 | ||
7211 | =cut | |
7212 | */ | |
7213 | ||
a0d0e21e | 7214 | SV* |
1b6737cc | 7215 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, const char *pv, STRLEN n) |
a0d0e21e LW |
7216 | { |
7217 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
7218 | return rv; |
7219 | } | |
7220 | ||
954c1994 GS |
7221 | /* |
7222 | =for apidoc sv_bless | |
7223 | ||
7224 | Blesses an SV into a specified package. The SV must be an RV. The package | |
7225 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
7226 | of the SV is unaffected. | |
7227 | ||
7228 | =cut | |
7229 | */ | |
7230 | ||
a0d0e21e | 7231 | SV* |
864dbfa3 | 7232 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 7233 | { |
76e3520e | 7234 | SV *tmpRef; |
a0d0e21e | 7235 | if (!SvROK(sv)) |
cea2e8a9 | 7236 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
7237 | tmpRef = SvRV(sv); |
7238 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
7239 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 7240 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
7241 | if (SvOBJECT(tmpRef)) { |
7242 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 7243 | --PL_sv_objcount; |
76e3520e | 7244 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 7245 | } |
a0d0e21e | 7246 | } |
76e3520e GS |
7247 | SvOBJECT_on(tmpRef); |
7248 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 7249 | ++PL_sv_objcount; |
862a34c6 | 7250 | SvUPGRADE(tmpRef, SVt_PVMG); |
b162af07 | 7251 | SvSTASH_set(tmpRef, (HV*)SvREFCNT_inc(stash)); |
a0d0e21e | 7252 | |
2e3febc6 CS |
7253 | if (Gv_AMG(stash)) |
7254 | SvAMAGIC_on(sv); | |
7255 | else | |
7256 | SvAMAGIC_off(sv); | |
a0d0e21e | 7257 | |
1edbfb88 AB |
7258 | if(SvSMAGICAL(tmpRef)) |
7259 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
7260 | mg_set(tmpRef); | |
7261 | ||
7262 | ||
ecdeb87c | 7263 | |
a0d0e21e LW |
7264 | return sv; |
7265 | } | |
7266 | ||
645c22ef | 7267 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
7268 | */ |
7269 | ||
76e3520e | 7270 | STATIC void |
cea2e8a9 | 7271 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 7272 | { |
850fabdf GS |
7273 | void *xpvmg; |
7274 | ||
a0d0e21e LW |
7275 | assert(SvTYPE(sv) == SVt_PVGV); |
7276 | SvFAKE_off(sv); | |
7277 | if (GvGP(sv)) | |
1edc1566 | 7278 | gp_free((GV*)sv); |
e826b3c7 | 7279 | if (GvSTASH(sv)) { |
e15faf7d | 7280 | sv_del_backref((SV*)GvSTASH(sv), sv); |
e826b3c7 GS |
7281 | GvSTASH(sv) = Nullhv; |
7282 | } | |
14befaf4 | 7283 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 7284 | Safefree(GvNAME(sv)); |
a5f75d66 | 7285 | GvMULTI_off(sv); |
850fabdf GS |
7286 | |
7287 | /* need to keep SvANY(sv) in the right arena */ | |
7288 | xpvmg = new_XPVMG(); | |
7289 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
7290 | del_XPVGV(SvANY(sv)); | |
7291 | SvANY(sv) = xpvmg; | |
7292 | ||
a0d0e21e LW |
7293 | SvFLAGS(sv) &= ~SVTYPEMASK; |
7294 | SvFLAGS(sv) |= SVt_PVMG; | |
7295 | } | |
7296 | ||
954c1994 | 7297 | /* |
840a7b70 | 7298 | =for apidoc sv_unref_flags |
954c1994 GS |
7299 | |
7300 | Unsets the RV status of the SV, and decrements the reference count of | |
7301 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
7302 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
7303 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
7304 | (otherwise the decrementing is conditional on the reference count being | |
7305 | different from one or the reference being a readonly SV). | |
7889fe52 | 7306 | See C<SvROK_off>. |
954c1994 GS |
7307 | |
7308 | =cut | |
7309 | */ | |
7310 | ||
ed6116ce | 7311 | void |
e15faf7d | 7312 | Perl_sv_unref_flags(pTHX_ SV *ref, U32 flags) |
ed6116ce | 7313 | { |
b64e5050 | 7314 | SV* const target = SvRV(ref); |
810b8aa5 | 7315 | |
e15faf7d NC |
7316 | if (SvWEAKREF(ref)) { |
7317 | sv_del_backref(target, ref); | |
7318 | SvWEAKREF_off(ref); | |
7319 | SvRV_set(ref, NULL); | |
810b8aa5 GS |
7320 | return; |
7321 | } | |
e15faf7d NC |
7322 | SvRV_set(ref, NULL); |
7323 | SvROK_off(ref); | |
7324 | /* You can't have a || SvREADONLY(target) here, as $a = $$a, where $a was | |
04ca4930 | 7325 | assigned to as BEGIN {$a = \"Foo"} will fail. */ |
e15faf7d NC |
7326 | if (SvREFCNT(target) != 1 || (flags & SV_IMMEDIATE_UNREF)) |
7327 | SvREFCNT_dec(target); | |
840a7b70 | 7328 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
e15faf7d | 7329 | sv_2mortal(target); /* Schedule for freeing later */ |
ed6116ce | 7330 | } |
8990e307 | 7331 | |
840a7b70 | 7332 | /* |
645c22ef DM |
7333 | =for apidoc sv_untaint |
7334 | ||
7335 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
7336 | =cut | |
7337 | */ | |
7338 | ||
bbce6d69 | 7339 | void |
864dbfa3 | 7340 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 7341 | { |
13f57bf8 | 7342 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
b64e5050 | 7343 | MAGIC * const mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 7344 | if (mg) |
565764a8 | 7345 | mg->mg_len &= ~1; |
36477c24 | 7346 | } |
bbce6d69 | 7347 | } |
7348 | ||
645c22ef DM |
7349 | /* |
7350 | =for apidoc sv_tainted | |
7351 | ||
7352 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
7353 | =cut | |
7354 | */ | |
7355 | ||
bbce6d69 | 7356 | bool |
864dbfa3 | 7357 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 7358 | { |
13f57bf8 | 7359 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
823a54a3 | 7360 | const MAGIC * const mg = mg_find(sv, PERL_MAGIC_taint); |
2ddb8a4f | 7361 | if (mg && (mg->mg_len & 1) ) |
36477c24 | 7362 | return TRUE; |
7363 | } | |
7364 | return FALSE; | |
bbce6d69 | 7365 | } |
7366 | ||
09540bc3 JH |
7367 | /* |
7368 | =for apidoc sv_setpviv | |
7369 | ||
7370 | Copies an integer into the given SV, also updating its string value. | |
7371 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
7372 | ||
7373 | =cut | |
7374 | */ | |
7375 | ||
7376 | void | |
7377 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
7378 | { | |
7379 | char buf[TYPE_CHARS(UV)]; | |
7380 | char *ebuf; | |
b64e5050 | 7381 | char * const ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); |
09540bc3 JH |
7382 | |
7383 | sv_setpvn(sv, ptr, ebuf - ptr); | |
7384 | } | |
7385 | ||
7386 | /* | |
7387 | =for apidoc sv_setpviv_mg | |
7388 | ||
7389 | Like C<sv_setpviv>, but also handles 'set' magic. | |
7390 | ||
7391 | =cut | |
7392 | */ | |
7393 | ||
7394 | void | |
7395 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
7396 | { | |
df7eb254 | 7397 | sv_setpviv(sv, iv); |
09540bc3 JH |
7398 | SvSETMAGIC(sv); |
7399 | } | |
7400 | ||
cea2e8a9 | 7401 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7402 | |
7403 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7404 | * version of the main function, (which may itself be aliased to us). | |
7405 | * Don't access this version directly. | |
7406 | */ | |
7407 | ||
cea2e8a9 GS |
7408 | void |
7409 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
7410 | { | |
7411 | dTHX; | |
7412 | va_list args; | |
7413 | va_start(args, pat); | |
c5be433b | 7414 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
7415 | va_end(args); |
7416 | } | |
7417 | ||
645c22ef DM |
7418 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
7419 | * version of the main function, (which may itself be aliased to us). | |
7420 | * Don't access this version directly. | |
7421 | */ | |
cea2e8a9 GS |
7422 | |
7423 | void | |
7424 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
7425 | { | |
7426 | dTHX; | |
7427 | va_list args; | |
7428 | va_start(args, pat); | |
c5be433b | 7429 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 7430 | va_end(args); |
cea2e8a9 GS |
7431 | } |
7432 | #endif | |
7433 | ||
954c1994 GS |
7434 | /* |
7435 | =for apidoc sv_setpvf | |
7436 | ||
bffc3d17 SH |
7437 | Works like C<sv_catpvf> but copies the text into the SV instead of |
7438 | appending it. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
954c1994 GS |
7439 | |
7440 | =cut | |
7441 | */ | |
7442 | ||
46fc3d4c | 7443 | void |
864dbfa3 | 7444 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 7445 | { |
7446 | va_list args; | |
46fc3d4c | 7447 | va_start(args, pat); |
c5be433b | 7448 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 7449 | va_end(args); |
7450 | } | |
7451 | ||
bffc3d17 SH |
7452 | /* |
7453 | =for apidoc sv_vsetpvf | |
7454 | ||
7455 | Works like C<sv_vcatpvf> but copies the text into the SV instead of | |
7456 | appending it. Does not handle 'set' magic. See C<sv_vsetpvf_mg>. | |
7457 | ||
7458 | Usually used via its frontend C<sv_setpvf>. | |
7459 | ||
7460 | =cut | |
7461 | */ | |
645c22ef | 7462 | |
c5be433b GS |
7463 | void |
7464 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
7465 | { | |
7466 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7467 | } | |
ef50df4b | 7468 | |
954c1994 GS |
7469 | /* |
7470 | =for apidoc sv_setpvf_mg | |
7471 | ||
7472 | Like C<sv_setpvf>, but also handles 'set' magic. | |
7473 | ||
7474 | =cut | |
7475 | */ | |
7476 | ||
ef50df4b | 7477 | void |
864dbfa3 | 7478 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
7479 | { |
7480 | va_list args; | |
ef50df4b | 7481 | va_start(args, pat); |
c5be433b | 7482 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 7483 | va_end(args); |
c5be433b GS |
7484 | } |
7485 | ||
bffc3d17 SH |
7486 | /* |
7487 | =for apidoc sv_vsetpvf_mg | |
7488 | ||
7489 | Like C<sv_vsetpvf>, but also handles 'set' magic. | |
7490 | ||
7491 | Usually used via its frontend C<sv_setpvf_mg>. | |
7492 | ||
7493 | =cut | |
7494 | */ | |
645c22ef | 7495 | |
c5be433b GS |
7496 | void |
7497 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
7498 | { | |
7499 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
7500 | SvSETMAGIC(sv); |
7501 | } | |
7502 | ||
cea2e8a9 | 7503 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7504 | |
7505 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7506 | * version of the main function, (which may itself be aliased to us). | |
7507 | * Don't access this version directly. | |
7508 | */ | |
7509 | ||
cea2e8a9 GS |
7510 | void |
7511 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
7512 | { | |
7513 | dTHX; | |
7514 | va_list args; | |
7515 | va_start(args, pat); | |
c5be433b | 7516 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
7517 | va_end(args); |
7518 | } | |
7519 | ||
645c22ef DM |
7520 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
7521 | * version of the main function, (which may itself be aliased to us). | |
7522 | * Don't access this version directly. | |
7523 | */ | |
7524 | ||
cea2e8a9 GS |
7525 | void |
7526 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
7527 | { | |
7528 | dTHX; | |
7529 | va_list args; | |
7530 | va_start(args, pat); | |
c5be433b | 7531 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 7532 | va_end(args); |
cea2e8a9 GS |
7533 | } |
7534 | #endif | |
7535 | ||
954c1994 GS |
7536 | /* |
7537 | =for apidoc sv_catpvf | |
7538 | ||
d5ce4a7c GA |
7539 | Processes its arguments like C<sprintf> and appends the formatted |
7540 | output to an SV. If the appended data contains "wide" characters | |
7541 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
7542 | and characters >255 formatted with %c), the original SV might get | |
bffc3d17 | 7543 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. See |
cdd94ca7 NC |
7544 | C<sv_catpvf_mg>. If the original SV was UTF-8, the pattern should be |
7545 | valid UTF-8; if the original SV was bytes, the pattern should be too. | |
954c1994 | 7546 | |
d5ce4a7c | 7547 | =cut */ |
954c1994 | 7548 | |
46fc3d4c | 7549 | void |
864dbfa3 | 7550 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 7551 | { |
7552 | va_list args; | |
46fc3d4c | 7553 | va_start(args, pat); |
c5be433b | 7554 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 7555 | va_end(args); |
7556 | } | |
7557 | ||
bffc3d17 SH |
7558 | /* |
7559 | =for apidoc sv_vcatpvf | |
7560 | ||
7561 | Processes its arguments like C<vsprintf> and appends the formatted output | |
7562 | to an SV. Does not handle 'set' magic. See C<sv_vcatpvf_mg>. | |
7563 | ||
7564 | Usually used via its frontend C<sv_catpvf>. | |
7565 | ||
7566 | =cut | |
7567 | */ | |
645c22ef | 7568 | |
ef50df4b | 7569 | void |
c5be433b GS |
7570 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
7571 | { | |
7572 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7573 | } | |
7574 | ||
954c1994 GS |
7575 | /* |
7576 | =for apidoc sv_catpvf_mg | |
7577 | ||
7578 | Like C<sv_catpvf>, but also handles 'set' magic. | |
7579 | ||
7580 | =cut | |
7581 | */ | |
7582 | ||
c5be433b | 7583 | void |
864dbfa3 | 7584 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
7585 | { |
7586 | va_list args; | |
ef50df4b | 7587 | va_start(args, pat); |
c5be433b | 7588 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 7589 | va_end(args); |
c5be433b GS |
7590 | } |
7591 | ||
bffc3d17 SH |
7592 | /* |
7593 | =for apidoc sv_vcatpvf_mg | |
7594 | ||
7595 | Like C<sv_vcatpvf>, but also handles 'set' magic. | |
7596 | ||
7597 | Usually used via its frontend C<sv_catpvf_mg>. | |
7598 | ||
7599 | =cut | |
7600 | */ | |
645c22ef | 7601 | |
c5be433b GS |
7602 | void |
7603 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
7604 | { | |
7605 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
7606 | SvSETMAGIC(sv); |
7607 | } | |
7608 | ||
954c1994 GS |
7609 | /* |
7610 | =for apidoc sv_vsetpvfn | |
7611 | ||
bffc3d17 | 7612 | Works like C<sv_vcatpvfn> but copies the text into the SV instead of |
954c1994 GS |
7613 | appending it. |
7614 | ||
bffc3d17 | 7615 | Usually used via one of its frontends C<sv_vsetpvf> and C<sv_vsetpvf_mg>. |
645c22ef | 7616 | |
954c1994 GS |
7617 | =cut |
7618 | */ | |
7619 | ||
46fc3d4c | 7620 | void |
7d5ea4e7 | 7621 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 7622 | { |
7623 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 7624 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 7625 | } |
7626 | ||
645c22ef DM |
7627 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
7628 | ||
2d00ba3b | 7629 | STATIC I32 |
9dd79c3f | 7630 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
7631 | { |
7632 | I32 var = 0; | |
7633 | switch (**pattern) { | |
7634 | case '1': case '2': case '3': | |
7635 | case '4': case '5': case '6': | |
7636 | case '7': case '8': case '9': | |
7637 | while (isDIGIT(**pattern)) | |
7638 | var = var * 10 + (*(*pattern)++ - '0'); | |
7639 | } | |
7640 | return var; | |
7641 | } | |
9dd79c3f | 7642 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 7643 | |
4151a5fe IZ |
7644 | static char * |
7645 | F0convert(NV nv, char *endbuf, STRLEN *len) | |
7646 | { | |
a3b680e6 | 7647 | const int neg = nv < 0; |
4151a5fe | 7648 | UV uv; |
4151a5fe IZ |
7649 | |
7650 | if (neg) | |
7651 | nv = -nv; | |
7652 | if (nv < UV_MAX) { | |
b464bac0 | 7653 | char *p = endbuf; |
4151a5fe | 7654 | nv += 0.5; |
028f8eaa | 7655 | uv = (UV)nv; |
4151a5fe IZ |
7656 | if (uv & 1 && uv == nv) |
7657 | uv--; /* Round to even */ | |
7658 | do { | |
a3b680e6 | 7659 | const unsigned dig = uv % 10; |
4151a5fe IZ |
7660 | *--p = '0' + dig; |
7661 | } while (uv /= 10); | |
7662 | if (neg) | |
7663 | *--p = '-'; | |
7664 | *len = endbuf - p; | |
7665 | return p; | |
7666 | } | |
7667 | return Nullch; | |
7668 | } | |
7669 | ||
7670 | ||
954c1994 GS |
7671 | /* |
7672 | =for apidoc sv_vcatpvfn | |
7673 | ||
7674 | Processes its arguments like C<vsprintf> and appends the formatted output | |
7675 | to an SV. Uses an array of SVs if the C style variable argument list is | |
7676 | missing (NULL). When running with taint checks enabled, indicates via | |
7677 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
7678 | locales). | |
7679 | ||
bffc3d17 | 7680 | Usually used via one of its frontends C<sv_vcatpvf> and C<sv_vcatpvf_mg>. |
645c22ef | 7681 | |
954c1994 GS |
7682 | =cut |
7683 | */ | |
7684 | ||
8896765a RB |
7685 | |
7686 | #define VECTORIZE_ARGS vecsv = va_arg(*args, SV*);\ | |
7687 | vecstr = (U8*)SvPV_const(vecsv,veclen);\ | |
7688 | vec_utf8 = DO_UTF8(vecsv); | |
7689 | ||
1ef29b0e RGS |
7690 | /* XXX maybe_tainted is never assigned to, so the doc above is lying. */ |
7691 | ||
46fc3d4c | 7692 | void |
7d5ea4e7 | 7693 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 7694 | { |
7695 | char *p; | |
7696 | char *q; | |
a3b680e6 | 7697 | const char *patend; |
fc36a67e | 7698 | STRLEN origlen; |
46fc3d4c | 7699 | I32 svix = 0; |
27da23d5 | 7700 | static const char nullstr[] = "(null)"; |
9c5ffd7c | 7701 | SV *argsv = Nullsv; |
b464bac0 AL |
7702 | bool has_utf8 = DO_UTF8(sv); /* has the result utf8? */ |
7703 | const bool pat_utf8 = has_utf8; /* the pattern is in utf8? */ | |
db79b45b | 7704 | SV *nsv = Nullsv; |
4151a5fe IZ |
7705 | /* Times 4: a decimal digit takes more than 3 binary digits. |
7706 | * NV_DIG: mantissa takes than many decimal digits. | |
7707 | * Plus 32: Playing safe. */ | |
7708 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
7709 | /* large enough for "%#.#f" --chip */ | |
7710 | /* what about long double NVs? --jhi */ | |
db79b45b | 7711 | |
53c1dcc0 AL |
7712 | PERL_UNUSED_ARG(maybe_tainted); |
7713 | ||
46fc3d4c | 7714 | /* no matter what, this is a string now */ |
fc36a67e | 7715 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 7716 | |
8896765a | 7717 | /* special-case "", "%s", and "%-p" (SVf - see below) */ |
46fc3d4c | 7718 | if (patlen == 0) |
7719 | return; | |
0dbb1585 | 7720 | if (patlen == 2 && pat[0] == '%' && pat[1] == 's') { |
2d03de9c AL |
7721 | if (args) { |
7722 | const char * const s = va_arg(*args, char*); | |
7723 | sv_catpv(sv, s ? s : nullstr); | |
7724 | } | |
7725 | else if (svix < svmax) { | |
7726 | sv_catsv(sv, *svargs); | |
2d03de9c AL |
7727 | } |
7728 | return; | |
0dbb1585 | 7729 | } |
8896765a RB |
7730 | if (args && patlen == 3 && pat[0] == '%' && |
7731 | pat[1] == '-' && pat[2] == 'p') { | |
7732 | argsv = va_arg(*args, SV*); | |
7733 | sv_catsv(sv, argsv); | |
8896765a | 7734 | return; |
46fc3d4c | 7735 | } |
7736 | ||
1d917b39 | 7737 | #ifndef USE_LONG_DOUBLE |
4151a5fe | 7738 | /* special-case "%.<number>[gf]" */ |
7af36d83 | 7739 | if ( !args && patlen <= 5 && pat[0] == '%' && pat[1] == '.' |
4151a5fe IZ |
7740 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { |
7741 | unsigned digits = 0; | |
7742 | const char *pp; | |
7743 | ||
7744 | pp = pat + 2; | |
7745 | while (*pp >= '0' && *pp <= '9') | |
7746 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 7747 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
7748 | NV nv; |
7749 | ||
7af36d83 | 7750 | if (svix < svmax) |
4151a5fe IZ |
7751 | nv = SvNV(*svargs); |
7752 | else | |
7753 | return; | |
7754 | if (*pp == 'g') { | |
2873255c NC |
7755 | /* Add check for digits != 0 because it seems that some |
7756 | gconverts are buggy in this case, and we don't yet have | |
7757 | a Configure test for this. */ | |
7758 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
7759 | /* 0, point, slack */ | |
2e59c212 | 7760 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
7761 | sv_catpv(sv, ebuf); |
7762 | if (*ebuf) /* May return an empty string for digits==0 */ | |
7763 | return; | |
7764 | } | |
7765 | } else if (!digits) { | |
7766 | STRLEN l; | |
7767 | ||
7768 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
7769 | sv_catpvn(sv, p, l); | |
7770 | return; | |
7771 | } | |
7772 | } | |
7773 | } | |
7774 | } | |
1d917b39 | 7775 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 7776 | |
2cf2cfc6 | 7777 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 7778 | has_utf8 = TRUE; |
2cf2cfc6 | 7779 | |
46fc3d4c | 7780 | patend = (char*)pat + patlen; |
7781 | for (p = (char*)pat; p < patend; p = q) { | |
7782 | bool alt = FALSE; | |
7783 | bool left = FALSE; | |
b22c7a20 | 7784 | bool vectorize = FALSE; |
211dfcf1 | 7785 | bool vectorarg = FALSE; |
2cf2cfc6 | 7786 | bool vec_utf8 = FALSE; |
46fc3d4c | 7787 | char fill = ' '; |
7788 | char plus = 0; | |
7789 | char intsize = 0; | |
7790 | STRLEN width = 0; | |
fc36a67e | 7791 | STRLEN zeros = 0; |
46fc3d4c | 7792 | bool has_precis = FALSE; |
7793 | STRLEN precis = 0; | |
58e33a90 | 7794 | I32 osvix = svix; |
2cf2cfc6 | 7795 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
7796 | #ifdef HAS_LDBL_SPRINTF_BUG |
7797 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 7798 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
7799 | bool fix_ldbl_sprintf_bug = FALSE; |
7800 | #endif | |
205f51d8 | 7801 | |
46fc3d4c | 7802 | char esignbuf[4]; |
89ebb4a3 | 7803 | U8 utf8buf[UTF8_MAXBYTES+1]; |
46fc3d4c | 7804 | STRLEN esignlen = 0; |
7805 | ||
4d84ee25 | 7806 | const char *eptr = Nullch; |
fc36a67e | 7807 | STRLEN elen = 0; |
81f715da | 7808 | SV *vecsv = Nullsv; |
245d4a47 | 7809 | const U8 *vecstr = Null(U8*); |
b22c7a20 | 7810 | STRLEN veclen = 0; |
934abaf1 | 7811 | char c = 0; |
46fc3d4c | 7812 | int i; |
9c5ffd7c | 7813 | unsigned base = 0; |
8c8eb53c RB |
7814 | IV iv = 0; |
7815 | UV uv = 0; | |
9e5b023a JH |
7816 | /* we need a long double target in case HAS_LONG_DOUBLE but |
7817 | not USE_LONG_DOUBLE | |
7818 | */ | |
35fff930 | 7819 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
7820 | long double nv; |
7821 | #else | |
65202027 | 7822 | NV nv; |
9e5b023a | 7823 | #endif |
46fc3d4c | 7824 | STRLEN have; |
7825 | STRLEN need; | |
7826 | STRLEN gap; | |
7af36d83 | 7827 | const char *dotstr = "."; |
b22c7a20 | 7828 | STRLEN dotstrlen = 1; |
211dfcf1 | 7829 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 7830 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
7831 | I32 epix = 0; /* explicit precision index */ |
7832 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 7833 | bool asterisk = FALSE; |
46fc3d4c | 7834 | |
211dfcf1 | 7835 | /* echo everything up to the next format specification */ |
46fc3d4c | 7836 | for (q = p; q < patend && *q != '%'; ++q) ; |
7837 | if (q > p) { | |
db79b45b JH |
7838 | if (has_utf8 && !pat_utf8) |
7839 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
7840 | else | |
7841 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 7842 | p = q; |
7843 | } | |
7844 | if (q++ >= patend) | |
7845 | break; | |
7846 | ||
211dfcf1 HS |
7847 | /* |
7848 | We allow format specification elements in this order: | |
7849 | \d+\$ explicit format parameter index | |
7850 | [-+ 0#]+ flags | |
a472f209 | 7851 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 7852 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
7853 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
7854 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
7855 | [hlqLV] size | |
8896765a RB |
7856 | [%bcdefginopsuxDFOUX] format (mandatory) |
7857 | */ | |
7858 | ||
7859 | if (args) { | |
7860 | /* | |
7861 | As of perl5.9.3, printf format checking is on by default. | |
7862 | Internally, perl uses %p formats to provide an escape to | |
7863 | some extended formatting. This block deals with those | |
7864 | extensions: if it does not match, (char*)q is reset and | |
7865 | the normal format processing code is used. | |
7866 | ||
7867 | Currently defined extensions are: | |
7868 | %p include pointer address (standard) | |
7869 | %-p (SVf) include an SV (previously %_) | |
7870 | %-<num>p include an SV with precision <num> | |
7871 | %1p (VDf) include a v-string (as %vd) | |
7872 | %<num>p reserved for future extensions | |
7873 | ||
7874 | Robin Barker 2005-07-14 | |
211dfcf1 | 7875 | */ |
8896765a RB |
7876 | char* r = q; |
7877 | bool sv = FALSE; | |
7878 | STRLEN n = 0; | |
7879 | if (*q == '-') | |
7880 | sv = *q++; | |
7881 | EXPECT_NUMBER(q, n); | |
7882 | if (*q++ == 'p') { | |
7883 | if (sv) { /* SVf */ | |
7884 | if (n) { | |
7885 | precis = n; | |
7886 | has_precis = TRUE; | |
7887 | } | |
7888 | argsv = va_arg(*args, SV*); | |
7889 | eptr = SvPVx_const(argsv, elen); | |
7890 | if (DO_UTF8(argsv)) | |
7891 | is_utf8 = TRUE; | |
7892 | goto string; | |
7893 | } | |
7894 | #if vdNUMBER | |
7895 | else if (n == vdNUMBER) { /* VDf */ | |
7896 | vectorize = TRUE; | |
7897 | VECTORIZE_ARGS | |
7898 | goto format_vd; | |
7899 | } | |
7900 | #endif | |
7901 | else if (n) { | |
7902 | if (ckWARN_d(WARN_INTERNAL)) | |
7903 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), | |
7904 | "internal %%<num>p might conflict with future printf extensions"); | |
7905 | } | |
7906 | } | |
7907 | q = r; | |
7908 | } | |
7909 | ||
211dfcf1 HS |
7910 | if (EXPECT_NUMBER(q, width)) { |
7911 | if (*q == '$') { | |
7912 | ++q; | |
7913 | efix = width; | |
7914 | } else { | |
7915 | goto gotwidth; | |
7916 | } | |
7917 | } | |
7918 | ||
fc36a67e | 7919 | /* FLAGS */ |
7920 | ||
46fc3d4c | 7921 | while (*q) { |
7922 | switch (*q) { | |
7923 | case ' ': | |
7924 | case '+': | |
7925 | plus = *q++; | |
7926 | continue; | |
7927 | ||
7928 | case '-': | |
7929 | left = TRUE; | |
7930 | q++; | |
7931 | continue; | |
7932 | ||
7933 | case '0': | |
7934 | fill = *q++; | |
7935 | continue; | |
7936 | ||
7937 | case '#': | |
7938 | alt = TRUE; | |
7939 | q++; | |
7940 | continue; | |
7941 | ||
fc36a67e | 7942 | default: |
7943 | break; | |
7944 | } | |
7945 | break; | |
7946 | } | |
46fc3d4c | 7947 | |
211dfcf1 | 7948 | tryasterisk: |
eb3fce90 | 7949 | if (*q == '*') { |
211dfcf1 HS |
7950 | q++; |
7951 | if (EXPECT_NUMBER(q, ewix)) | |
7952 | if (*q++ != '$') | |
7953 | goto unknown; | |
eb3fce90 | 7954 | asterisk = TRUE; |
211dfcf1 HS |
7955 | } |
7956 | if (*q == 'v') { | |
eb3fce90 | 7957 | q++; |
211dfcf1 HS |
7958 | if (vectorize) |
7959 | goto unknown; | |
9cbac4c7 | 7960 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
7961 | evix = ewix; |
7962 | ewix = 0; | |
7963 | asterisk = FALSE; | |
7964 | } | |
7965 | vectorize = TRUE; | |
7966 | goto tryasterisk; | |
eb3fce90 JH |
7967 | } |
7968 | ||
211dfcf1 | 7969 | if (!asterisk) |
858a90f9 | 7970 | { |
7a5fa8a2 | 7971 | if( *q == '0' ) |
f3583277 | 7972 | fill = *q++; |
211dfcf1 | 7973 | EXPECT_NUMBER(q, width); |
858a90f9 | 7974 | } |
211dfcf1 HS |
7975 | |
7976 | if (vectorize) { | |
7977 | if (vectorarg) { | |
7978 | if (args) | |
7979 | vecsv = va_arg(*args, SV*); | |
7980 | else | |
7981 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
3a7a539e | 7982 | svargs[evix ? evix-1 : svix++] : &PL_sv_undef; |
245d4a47 | 7983 | dotstr = SvPV_const(vecsv, dotstrlen); |
211dfcf1 | 7984 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 7985 | is_utf8 = TRUE; |
211dfcf1 HS |
7986 | } |
7987 | if (args) { | |
8896765a | 7988 | VECTORIZE_ARGS |
eb3fce90 | 7989 | } |
211dfcf1 HS |
7990 | else if (efix ? efix <= svmax : svix < svmax) { |
7991 | vecsv = svargs[efix ? efix-1 : svix++]; | |
245d4a47 | 7992 | vecstr = (U8*)SvPV_const(vecsv,veclen); |
2cf2cfc6 | 7993 | vec_utf8 = DO_UTF8(vecsv); |
d7aa5382 | 7994 | /* if this is a version object, we need to return the |
3f7c398e | 7995 | * stringified representation (which the SvPVX_const has |
d7aa5382 JP |
7996 | * already done for us), but not vectorize the args |
7997 | */ | |
7998 | if ( *q == 'd' && sv_derived_from(vecsv,"version") ) | |
7999 | { | |
8000 | q++; /* skip past the rest of the %vd format */ | |
245d4a47 | 8001 | eptr = (const char *) vecstr; |
42d9b98d | 8002 | elen = veclen; |
d7aa5382 JP |
8003 | vectorize=FALSE; |
8004 | goto string; | |
8005 | } | |
211dfcf1 HS |
8006 | } |
8007 | else { | |
8008 | vecstr = (U8*)""; | |
8009 | veclen = 0; | |
8010 | } | |
eb3fce90 | 8011 | } |
fc36a67e | 8012 | |
eb3fce90 | 8013 | if (asterisk) { |
fc36a67e | 8014 | if (args) |
8015 | i = va_arg(*args, int); | |
8016 | else | |
eb3fce90 JH |
8017 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
8018 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8019 | left |= (i < 0); |
8020 | width = (i < 0) ? -i : i; | |
fc36a67e | 8021 | } |
211dfcf1 | 8022 | gotwidth: |
fc36a67e | 8023 | |
8024 | /* PRECISION */ | |
46fc3d4c | 8025 | |
fc36a67e | 8026 | if (*q == '.') { |
8027 | q++; | |
8028 | if (*q == '*') { | |
211dfcf1 | 8029 | q++; |
7b8dd722 HS |
8030 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
8031 | goto unknown; | |
8032 | /* XXX: todo, support specified precision parameter */ | |
8033 | if (epix) | |
211dfcf1 | 8034 | goto unknown; |
46fc3d4c | 8035 | if (args) |
8036 | i = va_arg(*args, int); | |
8037 | else | |
eb3fce90 JH |
8038 | i = (ewix ? ewix <= svmax : svix < svmax) |
8039 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8040 | precis = (i < 0) ? 0 : i; |
fc36a67e | 8041 | } |
8042 | else { | |
8043 | precis = 0; | |
8044 | while (isDIGIT(*q)) | |
8045 | precis = precis * 10 + (*q++ - '0'); | |
8046 | } | |
8047 | has_precis = TRUE; | |
8048 | } | |
46fc3d4c | 8049 | |
fc36a67e | 8050 | /* SIZE */ |
46fc3d4c | 8051 | |
fc36a67e | 8052 | switch (*q) { |
c623ac67 GS |
8053 | #ifdef WIN32 |
8054 | case 'I': /* Ix, I32x, and I64x */ | |
8055 | # ifdef WIN64 | |
8056 | if (q[1] == '6' && q[2] == '4') { | |
8057 | q += 3; | |
8058 | intsize = 'q'; | |
8059 | break; | |
8060 | } | |
8061 | # endif | |
8062 | if (q[1] == '3' && q[2] == '2') { | |
8063 | q += 3; | |
8064 | break; | |
8065 | } | |
8066 | # ifdef WIN64 | |
8067 | intsize = 'q'; | |
8068 | # endif | |
8069 | q++; | |
8070 | break; | |
8071 | #endif | |
9e5b023a | 8072 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 8073 | case 'L': /* Ld */ |
e5c81feb | 8074 | /* FALL THROUGH */ |
e5c81feb | 8075 | #ifdef HAS_QUAD |
6f9bb7fd | 8076 | case 'q': /* qd */ |
9e5b023a | 8077 | #endif |
6f9bb7fd GS |
8078 | intsize = 'q'; |
8079 | q++; | |
8080 | break; | |
8081 | #endif | |
fc36a67e | 8082 | case 'l': |
9e5b023a | 8083 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 8084 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 8085 | intsize = 'q'; |
8086 | q += 2; | |
46fc3d4c | 8087 | break; |
cf2093f6 | 8088 | } |
fc36a67e | 8089 | #endif |
6f9bb7fd | 8090 | /* FALL THROUGH */ |
fc36a67e | 8091 | case 'h': |
cf2093f6 | 8092 | /* FALL THROUGH */ |
fc36a67e | 8093 | case 'V': |
8094 | intsize = *q++; | |
46fc3d4c | 8095 | break; |
8096 | } | |
8097 | ||
fc36a67e | 8098 | /* CONVERSION */ |
8099 | ||
211dfcf1 HS |
8100 | if (*q == '%') { |
8101 | eptr = q++; | |
8102 | elen = 1; | |
8103 | goto string; | |
8104 | } | |
8105 | ||
be75b157 HS |
8106 | if (vectorize) |
8107 | argsv = vecsv; | |
863811b2 | 8108 | else if (!args) { |
86c51f8b NC |
8109 | if (efix) { |
8110 | const I32 i = efix-1; | |
8111 | argsv = (i >= 0 && i < svmax) ? svargs[i] : &PL_sv_undef; | |
8112 | } else { | |
8113 | argsv = (svix >= 0 && svix < svmax) | |
8114 | ? svargs[svix++] : &PL_sv_undef; | |
8115 | } | |
863811b2 | 8116 | } |
211dfcf1 | 8117 | |
46fc3d4c | 8118 | switch (c = *q++) { |
8119 | ||
8120 | /* STRINGS */ | |
8121 | ||
46fc3d4c | 8122 | case 'c': |
be75b157 | 8123 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
8124 | if ((uv > 255 || |
8125 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 8126 | && !IN_BYTES) { |
dfe13c55 | 8127 | eptr = (char*)utf8buf; |
9041c2e3 | 8128 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 8129 | is_utf8 = TRUE; |
7e2040f0 GS |
8130 | } |
8131 | else { | |
8132 | c = (char)uv; | |
8133 | eptr = &c; | |
8134 | elen = 1; | |
a0ed51b3 | 8135 | } |
46fc3d4c | 8136 | goto string; |
8137 | ||
46fc3d4c | 8138 | case 's': |
be75b157 | 8139 | if (args && !vectorize) { |
fc36a67e | 8140 | eptr = va_arg(*args, char*); |
c635e13b | 8141 | if (eptr) |
1d7c1841 GS |
8142 | #ifdef MACOS_TRADITIONAL |
8143 | /* On MacOS, %#s format is used for Pascal strings */ | |
8144 | if (alt) | |
8145 | elen = *eptr++; | |
8146 | else | |
8147 | #endif | |
c635e13b | 8148 | elen = strlen(eptr); |
8149 | else { | |
27da23d5 | 8150 | eptr = (char *)nullstr; |
c635e13b | 8151 | elen = sizeof nullstr - 1; |
8152 | } | |
46fc3d4c | 8153 | } |
211dfcf1 | 8154 | else { |
4d84ee25 | 8155 | eptr = SvPVx_const(argsv, elen); |
7e2040f0 | 8156 | if (DO_UTF8(argsv)) { |
a0ed51b3 LW |
8157 | if (has_precis && precis < elen) { |
8158 | I32 p = precis; | |
7e2040f0 | 8159 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
8160 | precis = p; |
8161 | } | |
8162 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 8163 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 8164 | } |
2cf2cfc6 | 8165 | is_utf8 = TRUE; |
a0ed51b3 LW |
8166 | } |
8167 | } | |
fc36a67e | 8168 | |
46fc3d4c | 8169 | string: |
b22c7a20 | 8170 | vectorize = FALSE; |
46fc3d4c | 8171 | if (has_precis && elen > precis) |
8172 | elen = precis; | |
8173 | break; | |
8174 | ||
8175 | /* INTEGERS */ | |
8176 | ||
fc36a67e | 8177 | case 'p': |
be75b157 | 8178 | if (alt || vectorize) |
c2e66d9e | 8179 | goto unknown; |
211dfcf1 | 8180 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 8181 | base = 16; |
8182 | goto integer; | |
8183 | ||
46fc3d4c | 8184 | case 'D': |
29fe7a80 | 8185 | #ifdef IV_IS_QUAD |
22f3ae8c | 8186 | intsize = 'q'; |
29fe7a80 | 8187 | #else |
46fc3d4c | 8188 | intsize = 'l'; |
29fe7a80 | 8189 | #endif |
46fc3d4c | 8190 | /* FALL THROUGH */ |
8191 | case 'd': | |
8192 | case 'i': | |
8896765a RB |
8193 | #if vdNUMBER |
8194 | format_vd: | |
8195 | #endif | |
b22c7a20 | 8196 | if (vectorize) { |
ba210ebe | 8197 | STRLEN ulen; |
211dfcf1 HS |
8198 | if (!veclen) |
8199 | continue; | |
2cf2cfc6 A |
8200 | if (vec_utf8) |
8201 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
8202 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 8203 | else { |
e83d50c9 | 8204 | uv = *vecstr; |
b22c7a20 GS |
8205 | ulen = 1; |
8206 | } | |
8207 | vecstr += ulen; | |
8208 | veclen -= ulen; | |
e83d50c9 JP |
8209 | if (plus) |
8210 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
8211 | } |
8212 | else if (args) { | |
46fc3d4c | 8213 | switch (intsize) { |
8214 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 8215 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 8216 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 8217 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
8218 | #ifdef HAS_QUAD |
8219 | case 'q': iv = va_arg(*args, Quad_t); break; | |
8220 | #endif | |
46fc3d4c | 8221 | } |
8222 | } | |
8223 | else { | |
b10c0dba | 8224 | IV tiv = SvIVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 8225 | switch (intsize) { |
b10c0dba MHM |
8226 | case 'h': iv = (short)tiv; break; |
8227 | case 'l': iv = (long)tiv; break; | |
8228 | case 'V': | |
8229 | default: iv = tiv; break; | |
cf2093f6 | 8230 | #ifdef HAS_QUAD |
b10c0dba | 8231 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 8232 | #endif |
46fc3d4c | 8233 | } |
8234 | } | |
e83d50c9 JP |
8235 | if ( !vectorize ) /* we already set uv above */ |
8236 | { | |
8237 | if (iv >= 0) { | |
8238 | uv = iv; | |
8239 | if (plus) | |
8240 | esignbuf[esignlen++] = plus; | |
8241 | } | |
8242 | else { | |
8243 | uv = -iv; | |
8244 | esignbuf[esignlen++] = '-'; | |
8245 | } | |
46fc3d4c | 8246 | } |
8247 | base = 10; | |
8248 | goto integer; | |
8249 | ||
fc36a67e | 8250 | case 'U': |
29fe7a80 | 8251 | #ifdef IV_IS_QUAD |
22f3ae8c | 8252 | intsize = 'q'; |
29fe7a80 | 8253 | #else |
fc36a67e | 8254 | intsize = 'l'; |
29fe7a80 | 8255 | #endif |
fc36a67e | 8256 | /* FALL THROUGH */ |
8257 | case 'u': | |
8258 | base = 10; | |
8259 | goto uns_integer; | |
8260 | ||
4f19785b WSI |
8261 | case 'b': |
8262 | base = 2; | |
8263 | goto uns_integer; | |
8264 | ||
46fc3d4c | 8265 | case 'O': |
29fe7a80 | 8266 | #ifdef IV_IS_QUAD |
22f3ae8c | 8267 | intsize = 'q'; |
29fe7a80 | 8268 | #else |
46fc3d4c | 8269 | intsize = 'l'; |
29fe7a80 | 8270 | #endif |
46fc3d4c | 8271 | /* FALL THROUGH */ |
8272 | case 'o': | |
8273 | base = 8; | |
8274 | goto uns_integer; | |
8275 | ||
8276 | case 'X': | |
46fc3d4c | 8277 | case 'x': |
8278 | base = 16; | |
46fc3d4c | 8279 | |
8280 | uns_integer: | |
b22c7a20 | 8281 | if (vectorize) { |
ba210ebe | 8282 | STRLEN ulen; |
b22c7a20 | 8283 | vector: |
211dfcf1 HS |
8284 | if (!veclen) |
8285 | continue; | |
2cf2cfc6 A |
8286 | if (vec_utf8) |
8287 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
8288 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 8289 | else { |
a05b299f | 8290 | uv = *vecstr; |
b22c7a20 GS |
8291 | ulen = 1; |
8292 | } | |
8293 | vecstr += ulen; | |
8294 | veclen -= ulen; | |
8295 | } | |
8296 | else if (args) { | |
46fc3d4c | 8297 | switch (intsize) { |
8298 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 8299 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 8300 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 8301 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 8302 | #ifdef HAS_QUAD |
9e3321a5 | 8303 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 8304 | #endif |
46fc3d4c | 8305 | } |
8306 | } | |
8307 | else { | |
b10c0dba | 8308 | UV tuv = SvUVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 8309 | switch (intsize) { |
b10c0dba MHM |
8310 | case 'h': uv = (unsigned short)tuv; break; |
8311 | case 'l': uv = (unsigned long)tuv; break; | |
8312 | case 'V': | |
8313 | default: uv = tuv; break; | |
cf2093f6 | 8314 | #ifdef HAS_QUAD |
b10c0dba | 8315 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 8316 | #endif |
46fc3d4c | 8317 | } |
8318 | } | |
8319 | ||
8320 | integer: | |
4d84ee25 NC |
8321 | { |
8322 | char *ptr = ebuf + sizeof ebuf; | |
8323 | switch (base) { | |
8324 | unsigned dig; | |
8325 | case 16: | |
8326 | if (!uv) | |
8327 | alt = FALSE; | |
8328 | p = (char*)((c == 'X') | |
8329 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
8330 | do { | |
8331 | dig = uv & 15; | |
8332 | *--ptr = p[dig]; | |
8333 | } while (uv >>= 4); | |
8334 | if (alt) { | |
8335 | esignbuf[esignlen++] = '0'; | |
8336 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ | |
8337 | } | |
8338 | break; | |
8339 | case 8: | |
8340 | do { | |
8341 | dig = uv & 7; | |
8342 | *--ptr = '0' + dig; | |
8343 | } while (uv >>= 3); | |
8344 | if (alt && *ptr != '0') | |
8345 | *--ptr = '0'; | |
8346 | break; | |
8347 | case 2: | |
ed2b91d2 GA |
8348 | if (!uv) |
8349 | alt = FALSE; | |
4d84ee25 NC |
8350 | do { |
8351 | dig = uv & 1; | |
8352 | *--ptr = '0' + dig; | |
8353 | } while (uv >>= 1); | |
8354 | if (alt) { | |
8355 | esignbuf[esignlen++] = '0'; | |
8356 | esignbuf[esignlen++] = 'b'; | |
8357 | } | |
8358 | break; | |
8359 | default: /* it had better be ten or less */ | |
8360 | do { | |
8361 | dig = uv % base; | |
8362 | *--ptr = '0' + dig; | |
8363 | } while (uv /= base); | |
8364 | break; | |
46fc3d4c | 8365 | } |
4d84ee25 NC |
8366 | elen = (ebuf + sizeof ebuf) - ptr; |
8367 | eptr = ptr; | |
8368 | if (has_precis) { | |
8369 | if (precis > elen) | |
8370 | zeros = precis - elen; | |
8371 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
8372 | elen = 0; | |
eda88b6d | 8373 | } |
c10ed8b9 | 8374 | } |
46fc3d4c | 8375 | break; |
8376 | ||
8377 | /* FLOATING POINT */ | |
8378 | ||
fc36a67e | 8379 | case 'F': |
8380 | c = 'f'; /* maybe %F isn't supported here */ | |
8381 | /* FALL THROUGH */ | |
46fc3d4c | 8382 | case 'e': case 'E': |
fc36a67e | 8383 | case 'f': |
46fc3d4c | 8384 | case 'g': case 'G': |
8385 | ||
8386 | /* This is evil, but floating point is even more evil */ | |
8387 | ||
9e5b023a JH |
8388 | /* for SV-style calling, we can only get NV |
8389 | for C-style calling, we assume %f is double; | |
8390 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
8391 | */ | |
8392 | switch (intsize) { | |
8393 | case 'V': | |
8394 | #if defined(USE_LONG_DOUBLE) | |
8395 | intsize = 'q'; | |
8396 | #endif | |
8397 | break; | |
8a2e3f14 | 8398 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
8399 | case 'l': |
8400 | /* FALL THROUGH */ | |
9e5b023a JH |
8401 | default: |
8402 | #if defined(USE_LONG_DOUBLE) | |
8403 | intsize = args ? 0 : 'q'; | |
8404 | #endif | |
8405 | break; | |
8406 | case 'q': | |
8407 | #if defined(HAS_LONG_DOUBLE) | |
8408 | break; | |
8409 | #else | |
8410 | /* FALL THROUGH */ | |
8411 | #endif | |
8412 | case 'h': | |
9e5b023a JH |
8413 | goto unknown; |
8414 | } | |
8415 | ||
8416 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 8417 | nv = (args && !vectorize) ? |
35fff930 JH |
8418 | #if LONG_DOUBLESIZE > DOUBLESIZE |
8419 | intsize == 'q' ? | |
205f51d8 AS |
8420 | va_arg(*args, long double) : |
8421 | va_arg(*args, double) | |
35fff930 | 8422 | #else |
205f51d8 | 8423 | va_arg(*args, double) |
35fff930 | 8424 | #endif |
9e5b023a | 8425 | : SvNVx(argsv); |
fc36a67e | 8426 | |
8427 | need = 0; | |
be75b157 | 8428 | vectorize = FALSE; |
fc36a67e | 8429 | if (c != 'e' && c != 'E') { |
8430 | i = PERL_INT_MIN; | |
9e5b023a JH |
8431 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
8432 | will cast our (long double) to (double) */ | |
73b309ea | 8433 | (void)Perl_frexp(nv, &i); |
fc36a67e | 8434 | if (i == PERL_INT_MIN) |
cea2e8a9 | 8435 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 8436 | if (i > 0) |
fc36a67e | 8437 | need = BIT_DIGITS(i); |
8438 | } | |
8439 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 8440 | |
fc36a67e | 8441 | if (need < width) |
8442 | need = width; | |
8443 | ||
20f6aaab AS |
8444 | #ifdef HAS_LDBL_SPRINTF_BUG |
8445 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
8446 | with sfio - Allen <allens@cpan.org> */ |
8447 | ||
8448 | # ifdef DBL_MAX | |
8449 | # define MY_DBL_MAX DBL_MAX | |
8450 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
8451 | # if DOUBLESIZE >= 8 | |
8452 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
8453 | # else | |
8454 | # define MY_DBL_MAX 3.40282347E+38L | |
8455 | # endif | |
8456 | # endif | |
8457 | ||
8458 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
8459 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 8460 | # else |
205f51d8 | 8461 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 8462 | # endif |
20f6aaab | 8463 | |
205f51d8 AS |
8464 | # ifdef DBL_MIN |
8465 | # define MY_DBL_MIN DBL_MIN | |
8466 | # else /* XXX guessing! -Allen */ | |
8467 | # if DOUBLESIZE >= 8 | |
8468 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
8469 | # else | |
8470 | # define MY_DBL_MIN 1.17549435E-38L | |
8471 | # endif | |
8472 | # endif | |
20f6aaab | 8473 | |
205f51d8 AS |
8474 | if ((intsize == 'q') && (c == 'f') && |
8475 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
8476 | (need < DBL_DIG)) { | |
8477 | /* it's going to be short enough that | |
8478 | * long double precision is not needed */ | |
8479 | ||
8480 | if ((nv <= 0L) && (nv >= -0L)) | |
8481 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
8482 | else { | |
8483 | /* would use Perl_fp_class as a double-check but not | |
8484 | * functional on IRIX - see perl.h comments */ | |
8485 | ||
8486 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
8487 | /* It's within the range that a double can represent */ | |
8488 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
8489 | if ((nv >= ((long double)1/DBL_MAX)) || | |
8490 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 8491 | #endif |
205f51d8 | 8492 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 8493 | } |
205f51d8 AS |
8494 | } |
8495 | if (fix_ldbl_sprintf_bug == TRUE) { | |
8496 | double temp; | |
8497 | ||
8498 | intsize = 0; | |
8499 | temp = (double)nv; | |
8500 | nv = (NV)temp; | |
8501 | } | |
20f6aaab | 8502 | } |
205f51d8 AS |
8503 | |
8504 | # undef MY_DBL_MAX | |
8505 | # undef MY_DBL_MAX_BUG | |
8506 | # undef MY_DBL_MIN | |
8507 | ||
20f6aaab AS |
8508 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
8509 | ||
46fc3d4c | 8510 | need += 20; /* fudge factor */ |
80252599 GS |
8511 | if (PL_efloatsize < need) { |
8512 | Safefree(PL_efloatbuf); | |
8513 | PL_efloatsize = need + 20; /* more fudge */ | |
a02a5408 | 8514 | Newx(PL_efloatbuf, PL_efloatsize, char); |
7d5ea4e7 | 8515 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 8516 | } |
8517 | ||
4151a5fe IZ |
8518 | if ( !(width || left || plus || alt) && fill != '0' |
8519 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
8520 | /* See earlier comment about buggy Gconvert when digits, |
8521 | aka precis is 0 */ | |
8522 | if ( c == 'g' && precis) { | |
2e59c212 | 8523 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4150c189 NC |
8524 | /* May return an empty string for digits==0 */ |
8525 | if (*PL_efloatbuf) { | |
8526 | elen = strlen(PL_efloatbuf); | |
4151a5fe | 8527 | goto float_converted; |
4150c189 | 8528 | } |
4151a5fe IZ |
8529 | } else if ( c == 'f' && !precis) { |
8530 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
8531 | break; | |
8532 | } | |
8533 | } | |
4d84ee25 NC |
8534 | { |
8535 | char *ptr = ebuf + sizeof ebuf; | |
8536 | *--ptr = '\0'; | |
8537 | *--ptr = c; | |
8538 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ | |
9e5b023a | 8539 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) |
4d84ee25 NC |
8540 | if (intsize == 'q') { |
8541 | /* Copy the one or more characters in a long double | |
8542 | * format before the 'base' ([efgEFG]) character to | |
8543 | * the format string. */ | |
8544 | static char const prifldbl[] = PERL_PRIfldbl; | |
8545 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
8546 | while (p >= prifldbl) { *--ptr = *p--; } | |
8547 | } | |
65202027 | 8548 | #endif |
4d84ee25 NC |
8549 | if (has_precis) { |
8550 | base = precis; | |
8551 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
8552 | *--ptr = '.'; | |
8553 | } | |
8554 | if (width) { | |
8555 | base = width; | |
8556 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
8557 | } | |
8558 | if (fill == '0') | |
8559 | *--ptr = fill; | |
8560 | if (left) | |
8561 | *--ptr = '-'; | |
8562 | if (plus) | |
8563 | *--ptr = plus; | |
8564 | if (alt) | |
8565 | *--ptr = '#'; | |
8566 | *--ptr = '%'; | |
8567 | ||
8568 | /* No taint. Otherwise we are in the strange situation | |
8569 | * where printf() taints but print($float) doesn't. | |
8570 | * --jhi */ | |
9e5b023a | 8571 | #if defined(HAS_LONG_DOUBLE) |
4150c189 NC |
8572 | elen = ((intsize == 'q') |
8573 | ? my_sprintf(PL_efloatbuf, ptr, nv) | |
8574 | : my_sprintf(PL_efloatbuf, ptr, (double)nv)); | |
9e5b023a | 8575 | #else |
4150c189 | 8576 | elen = my_sprintf(PL_efloatbuf, ptr, nv); |
9e5b023a | 8577 | #endif |
4d84ee25 | 8578 | } |
4151a5fe | 8579 | float_converted: |
80252599 | 8580 | eptr = PL_efloatbuf; |
46fc3d4c | 8581 | break; |
8582 | ||
fc36a67e | 8583 | /* SPECIAL */ |
8584 | ||
8585 | case 'n': | |
8586 | i = SvCUR(sv) - origlen; | |
be75b157 | 8587 | if (args && !vectorize) { |
c635e13b | 8588 | switch (intsize) { |
8589 | case 'h': *(va_arg(*args, short*)) = i; break; | |
8590 | default: *(va_arg(*args, int*)) = i; break; | |
8591 | case 'l': *(va_arg(*args, long*)) = i; break; | |
8592 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
8593 | #ifdef HAS_QUAD |
8594 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
8595 | #endif | |
c635e13b | 8596 | } |
fc36a67e | 8597 | } |
9dd79c3f | 8598 | else |
211dfcf1 | 8599 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 8600 | vectorize = FALSE; |
fc36a67e | 8601 | continue; /* not "break" */ |
8602 | ||
8603 | /* UNKNOWN */ | |
8604 | ||
46fc3d4c | 8605 | default: |
fc36a67e | 8606 | unknown: |
041457d9 DM |
8607 | if (!args |
8608 | && (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF) | |
8609 | && ckWARN(WARN_PRINTF)) | |
8610 | { | |
c4420975 | 8611 | SV * const msg = sv_newmortal(); |
35c1215d NC |
8612 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
8613 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 8614 | if (c) { |
0f4b6630 | 8615 | if (isPRINT(c)) |
1c846c1f | 8616 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
8617 | "\"%%%c\"", c & 0xFF); |
8618 | else | |
8619 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 8620 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 8621 | (UV)c & 0xFF); |
0f4b6630 | 8622 | } else |
c635e13b | 8623 | sv_catpv(msg, "end of string"); |
9014280d | 8624 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 8625 | } |
fb73857a | 8626 | |
8627 | /* output mangled stuff ... */ | |
8628 | if (c == '\0') | |
8629 | --q; | |
46fc3d4c | 8630 | eptr = p; |
8631 | elen = q - p; | |
fb73857a | 8632 | |
8633 | /* ... right here, because formatting flags should not apply */ | |
8634 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
8635 | p = SvEND(sv); | |
4459522c | 8636 | Copy(eptr, p, elen, char); |
fb73857a | 8637 | p += elen; |
8638 | *p = '\0'; | |
3f7c398e | 8639 | SvCUR_set(sv, p - SvPVX_const(sv)); |
58e33a90 | 8640 | svix = osvix; |
fb73857a | 8641 | continue; /* not "break" */ |
46fc3d4c | 8642 | } |
8643 | ||
6c94ec8b HS |
8644 | /* calculate width before utf8_upgrade changes it */ |
8645 | have = esignlen + zeros + elen; | |
ed2b91d2 GA |
8646 | if (have < zeros) |
8647 | Perl_croak_nocontext(PL_memory_wrap); | |
6c94ec8b | 8648 | |
d2876be5 JH |
8649 | if (is_utf8 != has_utf8) { |
8650 | if (is_utf8) { | |
8651 | if (SvCUR(sv)) | |
8652 | sv_utf8_upgrade(sv); | |
8653 | } | |
8654 | else { | |
53c1dcc0 | 8655 | SV * const nsv = sv_2mortal(newSVpvn(eptr, elen)); |
d2876be5 | 8656 | sv_utf8_upgrade(nsv); |
93524f2b | 8657 | eptr = SvPVX_const(nsv); |
d2876be5 JH |
8658 | elen = SvCUR(nsv); |
8659 | } | |
8660 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
8661 | p = SvEND(sv); | |
8662 | *p = '\0'; | |
8663 | } | |
6af65485 | 8664 | |
46fc3d4c | 8665 | need = (have > width ? have : width); |
8666 | gap = need - have; | |
8667 | ||
d2641cbd PC |
8668 | if (need >= (((STRLEN)~0) - SvCUR(sv) - dotstrlen - 1)) |
8669 | Perl_croak_nocontext(PL_memory_wrap); | |
b22c7a20 | 8670 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 8671 | p = SvEND(sv); |
8672 | if (esignlen && fill == '0') { | |
53c1dcc0 | 8673 | int i; |
eb160463 | 8674 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 8675 | *p++ = esignbuf[i]; |
8676 | } | |
8677 | if (gap && !left) { | |
8678 | memset(p, fill, gap); | |
8679 | p += gap; | |
8680 | } | |
8681 | if (esignlen && fill != '0') { | |
53c1dcc0 | 8682 | int i; |
eb160463 | 8683 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 8684 | *p++ = esignbuf[i]; |
8685 | } | |
fc36a67e | 8686 | if (zeros) { |
53c1dcc0 | 8687 | int i; |
fc36a67e | 8688 | for (i = zeros; i; i--) |
8689 | *p++ = '0'; | |
8690 | } | |
46fc3d4c | 8691 | if (elen) { |
4459522c | 8692 | Copy(eptr, p, elen, char); |
46fc3d4c | 8693 | p += elen; |
8694 | } | |
8695 | if (gap && left) { | |
8696 | memset(p, ' ', gap); | |
8697 | p += gap; | |
8698 | } | |
b22c7a20 GS |
8699 | if (vectorize) { |
8700 | if (veclen) { | |
4459522c | 8701 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
8702 | p += dotstrlen; |
8703 | } | |
8704 | else | |
8705 | vectorize = FALSE; /* done iterating over vecstr */ | |
8706 | } | |
2cf2cfc6 A |
8707 | if (is_utf8) |
8708 | has_utf8 = TRUE; | |
8709 | if (has_utf8) | |
7e2040f0 | 8710 | SvUTF8_on(sv); |
46fc3d4c | 8711 | *p = '\0'; |
3f7c398e | 8712 | SvCUR_set(sv, p - SvPVX_const(sv)); |
b22c7a20 GS |
8713 | if (vectorize) { |
8714 | esignlen = 0; | |
8715 | goto vector; | |
8716 | } | |
46fc3d4c | 8717 | } |
8718 | } | |
51371543 | 8719 | |
645c22ef DM |
8720 | /* ========================================================================= |
8721 | ||
8722 | =head1 Cloning an interpreter | |
8723 | ||
8724 | All the macros and functions in this section are for the private use of | |
8725 | the main function, perl_clone(). | |
8726 | ||
8727 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
8728 | During the course of a cloning, a hash table is used to map old addresses | |
8729 | to new addresses. The table is created and manipulated with the | |
8730 | ptr_table_* functions. | |
8731 | ||
8732 | =cut | |
8733 | ||
8734 | ============================================================================*/ | |
8735 | ||
8736 | ||
1d7c1841 GS |
8737 | #if defined(USE_ITHREADS) |
8738 | ||
1d7c1841 GS |
8739 | #ifndef GpREFCNT_inc |
8740 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
8741 | #endif | |
8742 | ||
8743 | ||
d2d73c3e AB |
8744 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
8745 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
8746 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
8747 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
8748 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
8749 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
8750 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
8751 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
8752 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
8753 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
8754 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
8755 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
8756 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 8757 | |
d2d73c3e | 8758 | |
d2f185dc AMS |
8759 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
8760 | regcomp.c. AMS 20010712 */ | |
645c22ef | 8761 | |
1d7c1841 | 8762 | REGEXP * |
53c1dcc0 | 8763 | Perl_re_dup(pTHX_ const REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 8764 | { |
27da23d5 | 8765 | dVAR; |
d2f185dc AMS |
8766 | REGEXP *ret; |
8767 | int i, len, npar; | |
8768 | struct reg_substr_datum *s; | |
8769 | ||
8770 | if (!r) | |
8771 | return (REGEXP *)NULL; | |
8772 | ||
8773 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
8774 | return ret; | |
8775 | ||
8776 | len = r->offsets[0]; | |
8777 | npar = r->nparens+1; | |
8778 | ||
a02a5408 | 8779 | Newxc(ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); |
d2f185dc AMS |
8780 | Copy(r->program, ret->program, len+1, regnode); |
8781 | ||
a02a5408 | 8782 | Newx(ret->startp, npar, I32); |
d2f185dc | 8783 | Copy(r->startp, ret->startp, npar, I32); |
a02a5408 | 8784 | Newx(ret->endp, npar, I32); |
d2f185dc AMS |
8785 | Copy(r->startp, ret->startp, npar, I32); |
8786 | ||
a02a5408 | 8787 | Newx(ret->substrs, 1, struct reg_substr_data); |
d2f185dc AMS |
8788 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { |
8789 | s->min_offset = r->substrs->data[i].min_offset; | |
8790 | s->max_offset = r->substrs->data[i].max_offset; | |
8791 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 8792 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
8793 | } |
8794 | ||
70612e96 | 8795 | ret->regstclass = NULL; |
d2f185dc AMS |
8796 | if (r->data) { |
8797 | struct reg_data *d; | |
e1ec3a88 | 8798 | const int count = r->data->count; |
53c1dcc0 | 8799 | int i; |
d2f185dc | 8800 | |
a02a5408 | 8801 | Newxc(d, sizeof(struct reg_data) + count*sizeof(void *), |
d2f185dc | 8802 | char, struct reg_data); |
a02a5408 | 8803 | Newx(d->what, count, U8); |
d2f185dc AMS |
8804 | |
8805 | d->count = count; | |
8806 | for (i = 0; i < count; i++) { | |
8807 | d->what[i] = r->data->what[i]; | |
8808 | switch (d->what[i]) { | |
a3621e74 YO |
8809 | /* legal options are one of: sfpont |
8810 | see also regcomp.h and pregfree() */ | |
d2f185dc AMS |
8811 | case 's': |
8812 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
8813 | break; | |
8814 | case 'p': | |
8815 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
8816 | break; | |
8817 | case 'f': | |
8818 | /* This is cheating. */ | |
a02a5408 | 8819 | Newx(d->data[i], 1, struct regnode_charclass_class); |
d2f185dc AMS |
8820 | StructCopy(r->data->data[i], d->data[i], |
8821 | struct regnode_charclass_class); | |
70612e96 | 8822 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
8823 | break; |
8824 | case 'o': | |
33773810 AMS |
8825 | /* Compiled op trees are readonly, and can thus be |
8826 | shared without duplication. */ | |
b34c0dd4 | 8827 | OP_REFCNT_LOCK; |
9b978d73 | 8828 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
b34c0dd4 | 8829 | OP_REFCNT_UNLOCK; |
9b978d73 | 8830 | break; |
d2f185dc AMS |
8831 | case 'n': |
8832 | d->data[i] = r->data->data[i]; | |
8833 | break; | |
a3621e74 YO |
8834 | case 't': |
8835 | d->data[i] = r->data->data[i]; | |
8836 | OP_REFCNT_LOCK; | |
8837 | ((reg_trie_data*)d->data[i])->refcount++; | |
8838 | OP_REFCNT_UNLOCK; | |
8839 | break; | |
8840 | default: | |
8841 | Perl_croak(aTHX_ "panic: re_dup unknown data code '%c'", r->data->what[i]); | |
d2f185dc AMS |
8842 | } |
8843 | } | |
8844 | ||
8845 | ret->data = d; | |
8846 | } | |
8847 | else | |
8848 | ret->data = NULL; | |
8849 | ||
a02a5408 | 8850 | Newx(ret->offsets, 2*len+1, U32); |
d2f185dc AMS |
8851 | Copy(r->offsets, ret->offsets, 2*len+1, U32); |
8852 | ||
e01c5899 | 8853 | ret->precomp = SAVEPVN(r->precomp, r->prelen); |
d2f185dc AMS |
8854 | ret->refcnt = r->refcnt; |
8855 | ret->minlen = r->minlen; | |
8856 | ret->prelen = r->prelen; | |
8857 | ret->nparens = r->nparens; | |
8858 | ret->lastparen = r->lastparen; | |
8859 | ret->lastcloseparen = r->lastcloseparen; | |
8860 | ret->reganch = r->reganch; | |
8861 | ||
70612e96 RG |
8862 | ret->sublen = r->sublen; |
8863 | ||
8864 | if (RX_MATCH_COPIED(ret)) | |
e01c5899 | 8865 | ret->subbeg = SAVEPVN(r->subbeg, r->sublen); |
70612e96 RG |
8866 | else |
8867 | ret->subbeg = Nullch; | |
f8c7b90f | 8868 | #ifdef PERL_OLD_COPY_ON_WRITE |
9a26048b NC |
8869 | ret->saved_copy = Nullsv; |
8870 | #endif | |
70612e96 | 8871 | |
d2f185dc AMS |
8872 | ptr_table_store(PL_ptr_table, r, ret); |
8873 | return ret; | |
1d7c1841 GS |
8874 | } |
8875 | ||
d2d73c3e | 8876 | /* duplicate a file handle */ |
645c22ef | 8877 | |
1d7c1841 | 8878 | PerlIO * |
a8fc9800 | 8879 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
8880 | { |
8881 | PerlIO *ret; | |
53c1dcc0 AL |
8882 | |
8883 | PERL_UNUSED_ARG(type); | |
73d840c0 | 8884 | |
1d7c1841 GS |
8885 | if (!fp) |
8886 | return (PerlIO*)NULL; | |
8887 | ||
8888 | /* look for it in the table first */ | |
8889 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
8890 | if (ret) | |
8891 | return ret; | |
8892 | ||
8893 | /* create anew and remember what it is */ | |
ecdeb87c | 8894 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
8895 | ptr_table_store(PL_ptr_table, fp, ret); |
8896 | return ret; | |
8897 | } | |
8898 | ||
645c22ef DM |
8899 | /* duplicate a directory handle */ |
8900 | ||
1d7c1841 GS |
8901 | DIR * |
8902 | Perl_dirp_dup(pTHX_ DIR *dp) | |
8903 | { | |
8904 | if (!dp) | |
8905 | return (DIR*)NULL; | |
8906 | /* XXX TODO */ | |
8907 | return dp; | |
8908 | } | |
8909 | ||
ff276b08 | 8910 | /* duplicate a typeglob */ |
645c22ef | 8911 | |
1d7c1841 | 8912 | GP * |
a8fc9800 | 8913 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
8914 | { |
8915 | GP *ret; | |
8916 | if (!gp) | |
8917 | return (GP*)NULL; | |
8918 | /* look for it in the table first */ | |
8919 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
8920 | if (ret) | |
8921 | return ret; | |
8922 | ||
8923 | /* create anew and remember what it is */ | |
a02a5408 | 8924 | Newxz(ret, 1, GP); |
1d7c1841 GS |
8925 | ptr_table_store(PL_ptr_table, gp, ret); |
8926 | ||
8927 | /* clone */ | |
8928 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
8929 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
8930 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
8931 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
8932 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
8933 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
8934 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
8935 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 | 8936 | ret->gp_cvgen = gp->gp_cvgen; |
1d7c1841 GS |
8937 | ret->gp_line = gp->gp_line; |
8938 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
8939 | return ret; | |
8940 | } | |
8941 | ||
645c22ef DM |
8942 | /* duplicate a chain of magic */ |
8943 | ||
1d7c1841 | 8944 | MAGIC * |
a8fc9800 | 8945 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 8946 | { |
cb359b41 JH |
8947 | MAGIC *mgprev = (MAGIC*)NULL; |
8948 | MAGIC *mgret; | |
1d7c1841 GS |
8949 | if (!mg) |
8950 | return (MAGIC*)NULL; | |
8951 | /* look for it in the table first */ | |
8952 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
8953 | if (mgret) | |
8954 | return mgret; | |
8955 | ||
8956 | for (; mg; mg = mg->mg_moremagic) { | |
8957 | MAGIC *nmg; | |
a02a5408 | 8958 | Newxz(nmg, 1, MAGIC); |
cb359b41 | 8959 | if (mgprev) |
1d7c1841 | 8960 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
8961 | else |
8962 | mgret = nmg; | |
1d7c1841 GS |
8963 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
8964 | nmg->mg_private = mg->mg_private; | |
8965 | nmg->mg_type = mg->mg_type; | |
8966 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 8967 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 8968 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 8969 | } |
05bd4103 | 8970 | else if(mg->mg_type == PERL_MAGIC_backref) { |
7fc63493 | 8971 | const AV * const av = (AV*) mg->mg_obj; |
fdc9a813 AE |
8972 | SV **svp; |
8973 | I32 i; | |
7fc63493 | 8974 | (void)SvREFCNT_inc(nmg->mg_obj = (SV*)newAV()); |
fdc9a813 AE |
8975 | svp = AvARRAY(av); |
8976 | for (i = AvFILLp(av); i >= 0; i--) { | |
3a81978b | 8977 | if (!svp[i]) continue; |
fdc9a813 AE |
8978 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); |
8979 | } | |
05bd4103 | 8980 | } |
8d2f4536 NC |
8981 | else if (mg->mg_type == PERL_MAGIC_symtab) { |
8982 | nmg->mg_obj = mg->mg_obj; | |
8983 | } | |
1d7c1841 GS |
8984 | else { |
8985 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
8986 | ? sv_dup_inc(mg->mg_obj, param) |
8987 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
8988 | } |
8989 | nmg->mg_len = mg->mg_len; | |
8990 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 8991 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 8992 | if (mg->mg_len > 0) { |
1d7c1841 | 8993 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
8994 | if (mg->mg_type == PERL_MAGIC_overload_table && |
8995 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
8996 | { | |
0bcc34c2 AL |
8997 | AMT * const amtp = (AMT*)mg->mg_ptr; |
8998 | AMT * const namtp = (AMT*)nmg->mg_ptr; | |
1d7c1841 GS |
8999 | I32 i; |
9000 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 9001 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
9002 | } |
9003 | } | |
9004 | } | |
9005 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 9006 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 9007 | } |
68795e93 NIS |
9008 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
9009 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
9010 | } | |
1d7c1841 GS |
9011 | mgprev = nmg; |
9012 | } | |
9013 | return mgret; | |
9014 | } | |
9015 | ||
645c22ef DM |
9016 | /* create a new pointer-mapping table */ |
9017 | ||
1d7c1841 GS |
9018 | PTR_TBL_t * |
9019 | Perl_ptr_table_new(pTHX) | |
9020 | { | |
9021 | PTR_TBL_t *tbl; | |
a02a5408 | 9022 | Newxz(tbl, 1, PTR_TBL_t); |
1d7c1841 GS |
9023 | tbl->tbl_max = 511; |
9024 | tbl->tbl_items = 0; | |
a02a5408 | 9025 | Newxz(tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); |
1d7c1841 GS |
9026 | return tbl; |
9027 | } | |
9028 | ||
7119fd33 NC |
9029 | #define PTR_TABLE_HASH(ptr) \ |
9030 | ((PTR2UV(ptr) >> 3) ^ (PTR2UV(ptr) >> (3 + 7)) ^ (PTR2UV(ptr) >> (3 + 17))) | |
134ca3d6 | 9031 | |
93e68bfb JC |
9032 | /* |
9033 | we use the PTE_SVSLOT 'reservation' made above, both here (in the | |
9034 | following define) and at call to new_body_inline made below in | |
9035 | Perl_ptr_table_store() | |
9036 | */ | |
9037 | ||
9038 | #define del_pte(p) del_body_type(p, PTE_SVSLOT) | |
32e691d0 | 9039 | |
645c22ef DM |
9040 | /* map an existing pointer using a table */ |
9041 | ||
7bf61b54 | 9042 | STATIC PTR_TBL_ENT_t * |
e4cd1874 | 9043 | S_ptr_table_find(pTHX_ PTR_TBL_t *tbl, const void *sv) { |
1d7c1841 | 9044 | PTR_TBL_ENT_t *tblent; |
4373e329 | 9045 | const UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
9046 | assert(tbl); |
9047 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
9048 | for (; tblent; tblent = tblent->next) { | |
9049 | if (tblent->oldval == sv) | |
7bf61b54 | 9050 | return tblent; |
1d7c1841 | 9051 | } |
7bf61b54 NC |
9052 | return 0; |
9053 | } | |
9054 | ||
9055 | void * | |
9056 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, const void *sv) | |
9057 | { | |
e4cd1874 | 9058 | PTR_TBL_ENT_t const *const tblent = S_ptr_table_find(aTHX_ tbl, sv); |
7bf61b54 | 9059 | return tblent ? tblent->newval : (void *) 0; |
1d7c1841 GS |
9060 | } |
9061 | ||
645c22ef DM |
9062 | /* add a new entry to a pointer-mapping table */ |
9063 | ||
1d7c1841 | 9064 | void |
44f8325f | 9065 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, const void *oldsv, void *newsv) |
1d7c1841 | 9066 | { |
e4cd1874 | 9067 | PTR_TBL_ENT_t *tblent = S_ptr_table_find(aTHX_ tbl, oldsv); |
1d7c1841 | 9068 | |
7bf61b54 NC |
9069 | if (tblent) { |
9070 | tblent->newval = newsv; | |
9071 | } else { | |
9072 | const UV entry = PTR_TABLE_HASH(oldsv) & tbl->tbl_max; | |
9073 | ||
9074 | new_body_inline(tblent, sizeof(struct ptr_tbl_ent), PTE_SVSLOT); | |
9075 | tblent->oldval = oldsv; | |
9076 | tblent->newval = newsv; | |
9077 | tblent->next = tbl->tbl_ary[entry]; | |
9078 | tbl->tbl_ary[entry] = tblent; | |
9079 | tbl->tbl_items++; | |
9080 | if (tblent->next && tbl->tbl_items > tbl->tbl_max) | |
9081 | ptr_table_split(tbl); | |
1d7c1841 | 9082 | } |
1d7c1841 GS |
9083 | } |
9084 | ||
645c22ef DM |
9085 | /* double the hash bucket size of an existing ptr table */ |
9086 | ||
1d7c1841 GS |
9087 | void |
9088 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
9089 | { | |
9090 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
4373e329 | 9091 | const UV oldsize = tbl->tbl_max + 1; |
1d7c1841 GS |
9092 | UV newsize = oldsize * 2; |
9093 | UV i; | |
9094 | ||
9095 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
9096 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
9097 | tbl->tbl_max = --newsize; | |
9098 | tbl->tbl_ary = ary; | |
9099 | for (i=0; i < oldsize; i++, ary++) { | |
9100 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
9101 | if (!*ary) | |
9102 | continue; | |
9103 | curentp = ary + oldsize; | |
9104 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 9105 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
9106 | *entp = ent->next; |
9107 | ent->next = *curentp; | |
9108 | *curentp = ent; | |
9109 | continue; | |
9110 | } | |
9111 | else | |
9112 | entp = &ent->next; | |
9113 | } | |
9114 | } | |
9115 | } | |
9116 | ||
645c22ef DM |
9117 | /* remove all the entries from a ptr table */ |
9118 | ||
a0739874 DM |
9119 | void |
9120 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
9121 | { | |
d5cefff9 NC |
9122 | if (tbl && tbl->tbl_items) { |
9123 | register PTR_TBL_ENT_t **array = tbl->tbl_ary; | |
9124 | UV riter = tbl->tbl_max; | |
a0739874 | 9125 | |
d5cefff9 NC |
9126 | do { |
9127 | PTR_TBL_ENT_t *entry = array[riter]; | |
ab1e7f95 | 9128 | |
d5cefff9 | 9129 | while (entry) { |
00b6aa41 | 9130 | PTR_TBL_ENT_t * const oentry = entry; |
d5cefff9 NC |
9131 | entry = entry->next; |
9132 | del_pte(oentry); | |
9133 | } | |
9134 | } while (riter--); | |
a0739874 | 9135 | |
d5cefff9 NC |
9136 | tbl->tbl_items = 0; |
9137 | } | |
a0739874 DM |
9138 | } |
9139 | ||
645c22ef DM |
9140 | /* clear and free a ptr table */ |
9141 | ||
a0739874 DM |
9142 | void |
9143 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
9144 | { | |
9145 | if (!tbl) { | |
9146 | return; | |
9147 | } | |
9148 | ptr_table_clear(tbl); | |
9149 | Safefree(tbl->tbl_ary); | |
9150 | Safefree(tbl); | |
9151 | } | |
9152 | ||
5bd07a3d | 9153 | |
83841fad NIS |
9154 | void |
9155 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
9156 | { | |
9157 | if (SvROK(sstr)) { | |
b162af07 SP |
9158 | SvRV_set(dstr, SvWEAKREF(sstr) |
9159 | ? sv_dup(SvRV(sstr), param) | |
9160 | : sv_dup_inc(SvRV(sstr), param)); | |
f880fe2f | 9161 | |
83841fad | 9162 | } |
3f7c398e | 9163 | else if (SvPVX_const(sstr)) { |
83841fad NIS |
9164 | /* Has something there */ |
9165 | if (SvLEN(sstr)) { | |
68795e93 | 9166 | /* Normal PV - clone whole allocated space */ |
3f7c398e | 9167 | SvPV_set(dstr, SAVEPVN(SvPVX_const(sstr), SvLEN(sstr)-1)); |
d3d0e6f1 NC |
9168 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
9169 | /* Not that normal - actually sstr is copy on write. | |
9170 | But we are a true, independant SV, so: */ | |
9171 | SvREADONLY_off(dstr); | |
9172 | SvFAKE_off(dstr); | |
9173 | } | |
68795e93 | 9174 | } |
83841fad NIS |
9175 | else { |
9176 | /* Special case - not normally malloced for some reason */ | |
ef10be65 NC |
9177 | if ((SvREADONLY(sstr) && SvFAKE(sstr))) { |
9178 | /* A "shared" PV - clone it as "shared" PV */ | |
9179 | SvPV_set(dstr, | |
9180 | HEK_KEY(hek_dup(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)), | |
9181 | param))); | |
83841fad NIS |
9182 | } |
9183 | else { | |
9184 | /* Some other special case - random pointer */ | |
f880fe2f | 9185 | SvPV_set(dstr, SvPVX(sstr)); |
d3d0e6f1 | 9186 | } |
83841fad NIS |
9187 | } |
9188 | } | |
9189 | else { | |
9190 | /* Copy the Null */ | |
f880fe2f | 9191 | if (SvTYPE(dstr) == SVt_RV) |
b162af07 | 9192 | SvRV_set(dstr, NULL); |
f880fe2f SP |
9193 | else |
9194 | SvPV_set(dstr, 0); | |
83841fad NIS |
9195 | } |
9196 | } | |
9197 | ||
662fb8b2 NC |
9198 | /* duplicate an SV of any type (including AV, HV etc) */ |
9199 | ||
1d7c1841 | 9200 | SV * |
a8fc9800 | 9201 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 9202 | { |
27da23d5 | 9203 | dVAR; |
1d7c1841 GS |
9204 | SV *dstr; |
9205 | ||
9206 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
9207 | return Nullsv; | |
9208 | /* look for it in the table first */ | |
9209 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
9210 | if (dstr) | |
9211 | return dstr; | |
9212 | ||
0405e91e AB |
9213 | if(param->flags & CLONEf_JOIN_IN) { |
9214 | /** We are joining here so we don't want do clone | |
9215 | something that is bad **/ | |
bfcb3514 | 9216 | const char *hvname; |
0405e91e AB |
9217 | |
9218 | if(SvTYPE(sstr) == SVt_PVHV && | |
bfcb3514 | 9219 | (hvname = HvNAME_get(sstr))) { |
0405e91e | 9220 | /** don't clone stashes if they already exist **/ |
551405c4 | 9221 | return (SV*)gv_stashpv(hvname,0); |
0405e91e AB |
9222 | } |
9223 | } | |
9224 | ||
1d7c1841 GS |
9225 | /* create anew and remember what it is */ |
9226 | new_SV(dstr); | |
fd0854ff DM |
9227 | |
9228 | #ifdef DEBUG_LEAKING_SCALARS | |
9229 | dstr->sv_debug_optype = sstr->sv_debug_optype; | |
9230 | dstr->sv_debug_line = sstr->sv_debug_line; | |
9231 | dstr->sv_debug_inpad = sstr->sv_debug_inpad; | |
9232 | dstr->sv_debug_cloned = 1; | |
9233 | # ifdef NETWARE | |
9234 | dstr->sv_debug_file = savepv(sstr->sv_debug_file); | |
9235 | # else | |
9236 | dstr->sv_debug_file = savesharedpv(sstr->sv_debug_file); | |
9237 | # endif | |
9238 | #endif | |
9239 | ||
1d7c1841 GS |
9240 | ptr_table_store(PL_ptr_table, sstr, dstr); |
9241 | ||
9242 | /* clone */ | |
9243 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
9244 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
9245 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
9246 | ||
9247 | #ifdef DEBUGGING | |
3f7c398e | 9248 | if (SvANY(sstr) && PL_watch_pvx && SvPVX_const(sstr) == PL_watch_pvx) |
1d7c1841 | 9249 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", |
3f7c398e | 9250 | PL_watch_pvx, SvPVX_const(sstr)); |
1d7c1841 GS |
9251 | #endif |
9252 | ||
9660f481 DM |
9253 | /* don't clone objects whose class has asked us not to */ |
9254 | if (SvOBJECT(sstr) && ! (SvFLAGS(SvSTASH(sstr)) & SVphv_CLONEABLE)) { | |
9255 | SvFLAGS(dstr) &= ~SVTYPEMASK; | |
9256 | SvOBJECT_off(dstr); | |
9257 | return dstr; | |
9258 | } | |
9259 | ||
1d7c1841 GS |
9260 | switch (SvTYPE(sstr)) { |
9261 | case SVt_NULL: | |
9262 | SvANY(dstr) = NULL; | |
9263 | break; | |
9264 | case SVt_IV: | |
339049b0 | 9265 | SvANY(dstr) = (XPVIV*)((char*)&(dstr->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
45977657 | 9266 | SvIV_set(dstr, SvIVX(sstr)); |
1d7c1841 GS |
9267 | break; |
9268 | case SVt_NV: | |
9269 | SvANY(dstr) = new_XNV(); | |
9d6ce603 | 9270 | SvNV_set(dstr, SvNVX(sstr)); |
1d7c1841 GS |
9271 | break; |
9272 | case SVt_RV: | |
339049b0 | 9273 | SvANY(dstr) = &(dstr->sv_u.svu_rv); |
83841fad | 9274 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 | 9275 | break; |
662fb8b2 NC |
9276 | default: |
9277 | { | |
9278 | /* These are all the types that need complex bodies allocating. */ | |
662fb8b2 | 9279 | void *new_body; |
2bcc16b3 NC |
9280 | const svtype sv_type = SvTYPE(sstr); |
9281 | const struct body_details *const sv_type_details | |
9282 | = bodies_by_type + sv_type; | |
662fb8b2 | 9283 | |
93e68bfb | 9284 | switch (sv_type) { |
662fb8b2 NC |
9285 | default: |
9286 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", | |
9287 | (IV)SvTYPE(sstr)); | |
9288 | break; | |
9289 | ||
662fb8b2 NC |
9290 | case SVt_PVGV: |
9291 | if (GvUNIQUE((GV*)sstr)) { | |
93e68bfb | 9292 | /* Do sharing here, and fall through */ |
662fb8b2 | 9293 | } |
c22188b4 NC |
9294 | case SVt_PVIO: |
9295 | case SVt_PVFM: | |
9296 | case SVt_PVHV: | |
9297 | case SVt_PVAV: | |
93e68bfb | 9298 | case SVt_PVBM: |
662fb8b2 | 9299 | case SVt_PVCV: |
662fb8b2 | 9300 | case SVt_PVLV: |
662fb8b2 | 9301 | case SVt_PVMG: |
662fb8b2 | 9302 | case SVt_PVNV: |
662fb8b2 | 9303 | case SVt_PVIV: |
662fb8b2 | 9304 | case SVt_PV: |
f32993d6 | 9305 | assert(sv_type_details->copy); |
c22188b4 NC |
9306 | if (sv_type_details->arena) { |
9307 | new_body_inline(new_body, sv_type_details->copy, sv_type); | |
9308 | new_body | |
b9502f15 | 9309 | = (void*)((char*)new_body - sv_type_details->offset); |
c22188b4 NC |
9310 | } else { |
9311 | new_body = new_NOARENA(sv_type_details); | |
9312 | } | |
1d7c1841 | 9313 | } |
662fb8b2 NC |
9314 | assert(new_body); |
9315 | SvANY(dstr) = new_body; | |
9316 | ||
2bcc16b3 | 9317 | #ifndef PURIFY |
b9502f15 NC |
9318 | Copy(((char*)SvANY(sstr)) + sv_type_details->offset, |
9319 | ((char*)SvANY(dstr)) + sv_type_details->offset, | |
f32993d6 | 9320 | sv_type_details->copy, char); |
2bcc16b3 NC |
9321 | #else |
9322 | Copy(((char*)SvANY(sstr)), | |
9323 | ((char*)SvANY(dstr)), | |
b9502f15 | 9324 | sv_type_details->size + sv_type_details->offset, char); |
2bcc16b3 | 9325 | #endif |
662fb8b2 | 9326 | |
f32993d6 | 9327 | if (sv_type != SVt_PVAV && sv_type != SVt_PVHV) |
662fb8b2 NC |
9328 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
9329 | ||
9330 | /* The Copy above means that all the source (unduplicated) pointers | |
9331 | are now in the destination. We can check the flags and the | |
9332 | pointers in either, but it's possible that there's less cache | |
9333 | missing by always going for the destination. | |
9334 | FIXME - instrument and check that assumption */ | |
f32993d6 | 9335 | if (sv_type >= SVt_PVMG) { |
662fb8b2 NC |
9336 | if (SvMAGIC(dstr)) |
9337 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(dstr), param)); | |
9338 | if (SvSTASH(dstr)) | |
9339 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(dstr), param)); | |
1d7c1841 | 9340 | } |
662fb8b2 | 9341 | |
f32993d6 NC |
9342 | /* The cast silences a GCC warning about unhandled types. */ |
9343 | switch ((int)sv_type) { | |
662fb8b2 NC |
9344 | case SVt_PV: |
9345 | break; | |
9346 | case SVt_PVIV: | |
9347 | break; | |
9348 | case SVt_PVNV: | |
9349 | break; | |
9350 | case SVt_PVMG: | |
9351 | break; | |
9352 | case SVt_PVBM: | |
9353 | break; | |
9354 | case SVt_PVLV: | |
9355 | /* XXX LvTARGOFF sometimes holds PMOP* when DEBUGGING */ | |
9356 | if (LvTYPE(dstr) == 't') /* for tie: unrefcnted fake (SV**) */ | |
9357 | LvTARG(dstr) = dstr; | |
9358 | else if (LvTYPE(dstr) == 'T') /* for tie: fake HE */ | |
9359 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(dstr), 0, param); | |
9360 | else | |
9361 | LvTARG(dstr) = sv_dup_inc(LvTARG(dstr), param); | |
9362 | break; | |
9363 | case SVt_PVGV: | |
9364 | GvNAME(dstr) = SAVEPVN(GvNAME(dstr), GvNAMELEN(dstr)); | |
e15faf7d NC |
9365 | GvSTASH(dstr) = hv_dup(GvSTASH(dstr), param); |
9366 | /* Don't call sv_add_backref here as it's going to be created | |
9367 | as part of the magic cloning of the symbol table. */ | |
662fb8b2 NC |
9368 | GvGP(dstr) = gp_dup(GvGP(dstr), param); |
9369 | (void)GpREFCNT_inc(GvGP(dstr)); | |
9370 | break; | |
9371 | case SVt_PVIO: | |
9372 | IoIFP(dstr) = fp_dup(IoIFP(dstr), IoTYPE(dstr), param); | |
9373 | if (IoOFP(dstr) == IoIFP(sstr)) | |
9374 | IoOFP(dstr) = IoIFP(dstr); | |
9375 | else | |
9376 | IoOFP(dstr) = fp_dup(IoOFP(dstr), IoTYPE(dstr), param); | |
9377 | /* PL_rsfp_filters entries have fake IoDIRP() */ | |
9378 | if (IoDIRP(dstr) && !(IoFLAGS(dstr) & IOf_FAKE_DIRP)) | |
9379 | IoDIRP(dstr) = dirp_dup(IoDIRP(dstr)); | |
9380 | if(IoFLAGS(dstr) & IOf_FAKE_DIRP) { | |
9381 | /* I have no idea why fake dirp (rsfps) | |
9382 | should be treated differently but otherwise | |
9383 | we end up with leaks -- sky*/ | |
9384 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(dstr), param); | |
9385 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(dstr), param); | |
9386 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(dstr), param); | |
9387 | } else { | |
9388 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(dstr), param); | |
9389 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(dstr), param); | |
9390 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(dstr), param); | |
9391 | } | |
9392 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(dstr)); | |
9393 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(dstr)); | |
9394 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(dstr)); | |
9395 | break; | |
9396 | case SVt_PVAV: | |
9397 | if (AvARRAY((AV*)sstr)) { | |
9398 | SV **dst_ary, **src_ary; | |
9399 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
9400 | ||
9401 | src_ary = AvARRAY((AV*)sstr); | |
a02a5408 | 9402 | Newxz(dst_ary, AvMAX((AV*)sstr)+1, SV*); |
662fb8b2 NC |
9403 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); |
9404 | SvPV_set(dstr, (char*)dst_ary); | |
9405 | AvALLOC((AV*)dstr) = dst_ary; | |
9406 | if (AvREAL((AV*)sstr)) { | |
9407 | while (items-- > 0) | |
9408 | *dst_ary++ = sv_dup_inc(*src_ary++, param); | |
9409 | } | |
9410 | else { | |
9411 | while (items-- > 0) | |
9412 | *dst_ary++ = sv_dup(*src_ary++, param); | |
9413 | } | |
9414 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
9415 | while (items-- > 0) { | |
9416 | *dst_ary++ = &PL_sv_undef; | |
9417 | } | |
bfcb3514 | 9418 | } |
662fb8b2 NC |
9419 | else { |
9420 | SvPV_set(dstr, Nullch); | |
9421 | AvALLOC((AV*)dstr) = (SV**)NULL; | |
b79f7545 | 9422 | } |
662fb8b2 NC |
9423 | break; |
9424 | case SVt_PVHV: | |
9425 | { | |
9426 | HEK *hvname = 0; | |
9427 | ||
9428 | if (HvARRAY((HV*)sstr)) { | |
9429 | STRLEN i = 0; | |
9430 | const bool sharekeys = !!HvSHAREKEYS(sstr); | |
9431 | XPVHV * const dxhv = (XPVHV*)SvANY(dstr); | |
9432 | XPVHV * const sxhv = (XPVHV*)SvANY(sstr); | |
9433 | char *darray; | |
a02a5408 | 9434 | Newx(darray, PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1) |
662fb8b2 NC |
9435 | + (SvOOK(sstr) ? sizeof(struct xpvhv_aux) : 0), |
9436 | char); | |
9437 | HvARRAY(dstr) = (HE**)darray; | |
9438 | while (i <= sxhv->xhv_max) { | |
5c4138a0 | 9439 | const HE *source = HvARRAY(sstr)[i]; |
662fb8b2 NC |
9440 | HvARRAY(dstr)[i] = source |
9441 | ? he_dup(source, sharekeys, param) : 0; | |
9442 | ++i; | |
9443 | } | |
9444 | if (SvOOK(sstr)) { | |
00b6aa41 AL |
9445 | struct xpvhv_aux * const saux = HvAUX(sstr); |
9446 | struct xpvhv_aux * const daux = HvAUX(dstr); | |
662fb8b2 NC |
9447 | /* This flag isn't copied. */ |
9448 | /* SvOOK_on(hv) attacks the IV flags. */ | |
9449 | SvFLAGS(dstr) |= SVf_OOK; | |
9450 | ||
9451 | hvname = saux->xhv_name; | |
dd690478 NC |
9452 | daux->xhv_name |
9453 | = hvname ? hek_dup(hvname, param) : hvname; | |
662fb8b2 NC |
9454 | |
9455 | daux->xhv_riter = saux->xhv_riter; | |
9456 | daux->xhv_eiter = saux->xhv_eiter | |
dd690478 NC |
9457 | ? he_dup(saux->xhv_eiter, |
9458 | (bool)!!HvSHAREKEYS(sstr), param) : 0; | |
662fb8b2 NC |
9459 | } |
9460 | } | |
9461 | else { | |
9462 | SvPV_set(dstr, Nullch); | |
9463 | } | |
9464 | /* Record stashes for possible cloning in Perl_clone(). */ | |
9465 | if(hvname) | |
9466 | av_push(param->stashes, dstr); | |
9467 | } | |
9468 | break; | |
9469 | case SVt_PVFM: | |
9470 | case SVt_PVCV: | |
9471 | /* NOTE: not refcounted */ | |
9472 | CvSTASH(dstr) = hv_dup(CvSTASH(dstr), param); | |
9473 | OP_REFCNT_LOCK; | |
9474 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(dstr)); | |
9475 | OP_REFCNT_UNLOCK; | |
9476 | if (CvCONST(dstr)) { | |
9477 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(dstr)) ? | |
9478 | SvREFCNT_inc(CvXSUBANY(dstr).any_ptr) : | |
9479 | sv_dup_inc((SV *)CvXSUBANY(dstr).any_ptr, param); | |
9480 | } | |
9481 | /* don't dup if copying back - CvGV isn't refcounted, so the | |
9482 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
9483 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
9484 | Nullgv : gv_dup(CvGV(dstr), param) ; | |
9485 | if (!(param->flags & CLONEf_COPY_STACKS)) { | |
9486 | CvDEPTH(dstr) = 0; | |
9487 | } | |
9488 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); | |
9489 | CvOUTSIDE(dstr) = | |
9490 | CvWEAKOUTSIDE(sstr) | |
9491 | ? cv_dup( CvOUTSIDE(dstr), param) | |
9492 | : cv_dup_inc(CvOUTSIDE(dstr), param); | |
9493 | if (!CvXSUB(dstr)) | |
9494 | CvFILE(dstr) = SAVEPV(CvFILE(dstr)); | |
9495 | break; | |
bfcb3514 | 9496 | } |
1d7c1841 | 9497 | } |
1d7c1841 GS |
9498 | } |
9499 | ||
9500 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
9501 | ++PL_sv_objcount; | |
9502 | ||
9503 | return dstr; | |
d2d73c3e | 9504 | } |
1d7c1841 | 9505 | |
645c22ef DM |
9506 | /* duplicate a context */ |
9507 | ||
1d7c1841 | 9508 | PERL_CONTEXT * |
a8fc9800 | 9509 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
9510 | { |
9511 | PERL_CONTEXT *ncxs; | |
9512 | ||
9513 | if (!cxs) | |
9514 | return (PERL_CONTEXT*)NULL; | |
9515 | ||
9516 | /* look for it in the table first */ | |
9517 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
9518 | if (ncxs) | |
9519 | return ncxs; | |
9520 | ||
9521 | /* create anew and remember what it is */ | |
a02a5408 | 9522 | Newxz(ncxs, max + 1, PERL_CONTEXT); |
1d7c1841 GS |
9523 | ptr_table_store(PL_ptr_table, cxs, ncxs); |
9524 | ||
9525 | while (ix >= 0) { | |
9526 | PERL_CONTEXT *cx = &cxs[ix]; | |
9527 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
9528 | ncx->cx_type = cx->cx_type; | |
9529 | if (CxTYPE(cx) == CXt_SUBST) { | |
9530 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
9531 | } | |
9532 | else { | |
9533 | ncx->blk_oldsp = cx->blk_oldsp; | |
9534 | ncx->blk_oldcop = cx->blk_oldcop; | |
1d7c1841 GS |
9535 | ncx->blk_oldmarksp = cx->blk_oldmarksp; |
9536 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
9537 | ncx->blk_oldpm = cx->blk_oldpm; | |
9538 | ncx->blk_gimme = cx->blk_gimme; | |
9539 | switch (CxTYPE(cx)) { | |
9540 | case CXt_SUB: | |
9541 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
9542 | ? cv_dup_inc(cx->blk_sub.cv, param) |
9543 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 9544 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 9545 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 9546 | : Nullav); |
d2d73c3e | 9547 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
9548 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
9549 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
9550 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
f39bc417 | 9551 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
9552 | break; |
9553 | case CXt_EVAL: | |
9554 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
9555 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 9556 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 9557 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 9558 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
f39bc417 | 9559 | ncx->blk_eval.retop = cx->blk_eval.retop; |
1d7c1841 GS |
9560 | break; |
9561 | case CXt_LOOP: | |
9562 | ncx->blk_loop.label = cx->blk_loop.label; | |
9563 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
9564 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
9565 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
9566 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
9567 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
9568 | ? cx->blk_loop.iterdata | |
d2d73c3e | 9569 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
9570 | ncx->blk_loop.oldcomppad |
9571 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
9572 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
9573 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
9574 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
9575 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
9576 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
9577 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
9578 | break; | |
9579 | case CXt_FORMAT: | |
d2d73c3e AB |
9580 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
9581 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
9582 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 | 9583 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
f39bc417 | 9584 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
9585 | break; |
9586 | case CXt_BLOCK: | |
9587 | case CXt_NULL: | |
9588 | break; | |
9589 | } | |
9590 | } | |
9591 | --ix; | |
9592 | } | |
9593 | return ncxs; | |
9594 | } | |
9595 | ||
645c22ef DM |
9596 | /* duplicate a stack info structure */ |
9597 | ||
1d7c1841 | 9598 | PERL_SI * |
a8fc9800 | 9599 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
9600 | { |
9601 | PERL_SI *nsi; | |
9602 | ||
9603 | if (!si) | |
9604 | return (PERL_SI*)NULL; | |
9605 | ||
9606 | /* look for it in the table first */ | |
9607 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
9608 | if (nsi) | |
9609 | return nsi; | |
9610 | ||
9611 | /* create anew and remember what it is */ | |
a02a5408 | 9612 | Newxz(nsi, 1, PERL_SI); |
1d7c1841 GS |
9613 | ptr_table_store(PL_ptr_table, si, nsi); |
9614 | ||
d2d73c3e | 9615 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
9616 | nsi->si_cxix = si->si_cxix; |
9617 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 9618 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 9619 | nsi->si_type = si->si_type; |
d2d73c3e AB |
9620 | nsi->si_prev = si_dup(si->si_prev, param); |
9621 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
9622 | nsi->si_markoff = si->si_markoff; |
9623 | ||
9624 | return nsi; | |
9625 | } | |
9626 | ||
9627 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
9628 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
9629 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
9630 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
9631 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
9632 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
9633 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
9634 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
9635 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
9636 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
9637 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
9638 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
9639 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
9640 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
9641 | ||
9642 | /* XXXXX todo */ | |
9643 | #define pv_dup_inc(p) SAVEPV(p) | |
9644 | #define pv_dup(p) SAVEPV(p) | |
9645 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
9646 | ||
645c22ef DM |
9647 | /* map any object to the new equivent - either something in the |
9648 | * ptr table, or something in the interpreter structure | |
9649 | */ | |
9650 | ||
1d7c1841 | 9651 | void * |
53c1dcc0 | 9652 | Perl_any_dup(pTHX_ void *v, const PerlInterpreter *proto_perl) |
1d7c1841 GS |
9653 | { |
9654 | void *ret; | |
9655 | ||
9656 | if (!v) | |
9657 | return (void*)NULL; | |
9658 | ||
9659 | /* look for it in the table first */ | |
9660 | ret = ptr_table_fetch(PL_ptr_table, v); | |
9661 | if (ret) | |
9662 | return ret; | |
9663 | ||
9664 | /* see if it is part of the interpreter structure */ | |
9665 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 9666 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 9667 | else { |
1d7c1841 | 9668 | ret = v; |
05ec9bb3 | 9669 | } |
1d7c1841 GS |
9670 | |
9671 | return ret; | |
9672 | } | |
9673 | ||
645c22ef DM |
9674 | /* duplicate the save stack */ |
9675 | ||
1d7c1841 | 9676 | ANY * |
a8fc9800 | 9677 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 | 9678 | { |
53c1dcc0 AL |
9679 | ANY * const ss = proto_perl->Tsavestack; |
9680 | const I32 max = proto_perl->Tsavestack_max; | |
9681 | I32 ix = proto_perl->Tsavestack_ix; | |
1d7c1841 GS |
9682 | ANY *nss; |
9683 | SV *sv; | |
9684 | GV *gv; | |
9685 | AV *av; | |
9686 | HV *hv; | |
9687 | void* ptr; | |
9688 | int intval; | |
9689 | long longval; | |
9690 | GP *gp; | |
9691 | IV iv; | |
c4e33207 | 9692 | char *c = NULL; |
1d7c1841 | 9693 | void (*dptr) (void*); |
acfe0abc | 9694 | void (*dxptr) (pTHX_ void*); |
1d7c1841 | 9695 | |
a02a5408 | 9696 | Newxz(nss, max, ANY); |
1d7c1841 GS |
9697 | |
9698 | while (ix > 0) { | |
b464bac0 | 9699 | I32 i = POPINT(ss,ix); |
1d7c1841 GS |
9700 | TOPINT(nss,ix) = i; |
9701 | switch (i) { | |
9702 | case SAVEt_ITEM: /* normal string */ | |
9703 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 9704 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 9705 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 9706 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
9707 | break; |
9708 | case SAVEt_SV: /* scalar reference */ | |
9709 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 9710 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 9711 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 9712 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 9713 | break; |
f4dd75d9 GS |
9714 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
9715 | c = (char*)POPPTR(ss,ix); | |
9716 | TOPPTR(nss,ix) = pv_dup(c); | |
9717 | ptr = POPPTR(ss,ix); | |
9718 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9719 | break; | |
05ec9bb3 NIS |
9720 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
9721 | c = (char*)POPPTR(ss,ix); | |
9722 | TOPPTR(nss,ix) = savesharedpv(c); | |
9723 | ptr = POPPTR(ss,ix); | |
9724 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9725 | break; | |
1d7c1841 GS |
9726 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
9727 | case SAVEt_SVREF: /* scalar reference */ | |
9728 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 9729 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
9730 | ptr = POPPTR(ss,ix); |
9731 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
9732 | break; | |
9733 | case SAVEt_AV: /* array reference */ | |
9734 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 9735 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 9736 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 9737 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
9738 | break; |
9739 | case SAVEt_HV: /* hash reference */ | |
9740 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 9741 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 9742 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 9743 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
9744 | break; |
9745 | case SAVEt_INT: /* int reference */ | |
9746 | ptr = POPPTR(ss,ix); | |
9747 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9748 | intval = (int)POPINT(ss,ix); | |
9749 | TOPINT(nss,ix) = intval; | |
9750 | break; | |
9751 | case SAVEt_LONG: /* long reference */ | |
9752 | ptr = POPPTR(ss,ix); | |
9753 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9754 | longval = (long)POPLONG(ss,ix); | |
9755 | TOPLONG(nss,ix) = longval; | |
9756 | break; | |
9757 | case SAVEt_I32: /* I32 reference */ | |
9758 | case SAVEt_I16: /* I16 reference */ | |
9759 | case SAVEt_I8: /* I8 reference */ | |
9760 | ptr = POPPTR(ss,ix); | |
9761 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9762 | i = POPINT(ss,ix); | |
9763 | TOPINT(nss,ix) = i; | |
9764 | break; | |
9765 | case SAVEt_IV: /* IV reference */ | |
9766 | ptr = POPPTR(ss,ix); | |
9767 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9768 | iv = POPIV(ss,ix); | |
9769 | TOPIV(nss,ix) = iv; | |
9770 | break; | |
9771 | case SAVEt_SPTR: /* SV* reference */ | |
9772 | ptr = POPPTR(ss,ix); | |
9773 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9774 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 9775 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
9776 | break; |
9777 | case SAVEt_VPTR: /* random* reference */ | |
9778 | ptr = POPPTR(ss,ix); | |
9779 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9780 | ptr = POPPTR(ss,ix); | |
9781 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9782 | break; | |
9783 | case SAVEt_PPTR: /* char* reference */ | |
9784 | ptr = POPPTR(ss,ix); | |
9785 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9786 | c = (char*)POPPTR(ss,ix); | |
9787 | TOPPTR(nss,ix) = pv_dup(c); | |
9788 | break; | |
9789 | case SAVEt_HPTR: /* HV* reference */ | |
9790 | ptr = POPPTR(ss,ix); | |
9791 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9792 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 9793 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
9794 | break; |
9795 | case SAVEt_APTR: /* AV* reference */ | |
9796 | ptr = POPPTR(ss,ix); | |
9797 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9798 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 9799 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
9800 | break; |
9801 | case SAVEt_NSTAB: | |
9802 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 9803 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
9804 | break; |
9805 | case SAVEt_GP: /* scalar reference */ | |
9806 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 9807 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
9808 | (void)GpREFCNT_inc(gp); |
9809 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 9810 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
9811 | c = (char*)POPPTR(ss,ix); |
9812 | TOPPTR(nss,ix) = pv_dup(c); | |
9813 | iv = POPIV(ss,ix); | |
9814 | TOPIV(nss,ix) = iv; | |
9815 | iv = POPIV(ss,ix); | |
9816 | TOPIV(nss,ix) = iv; | |
9817 | break; | |
9818 | case SAVEt_FREESV: | |
26d9b02f | 9819 | case SAVEt_MORTALIZESV: |
1d7c1841 | 9820 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 9821 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
9822 | break; |
9823 | case SAVEt_FREEOP: | |
9824 | ptr = POPPTR(ss,ix); | |
9825 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
9826 | /* these are assumed to be refcounted properly */ | |
53c1dcc0 | 9827 | OP *o; |
1d7c1841 GS |
9828 | switch (((OP*)ptr)->op_type) { |
9829 | case OP_LEAVESUB: | |
9830 | case OP_LEAVESUBLV: | |
9831 | case OP_LEAVEEVAL: | |
9832 | case OP_LEAVE: | |
9833 | case OP_SCOPE: | |
9834 | case OP_LEAVEWRITE: | |
e977893f GS |
9835 | TOPPTR(nss,ix) = ptr; |
9836 | o = (OP*)ptr; | |
9837 | OpREFCNT_inc(o); | |
1d7c1841 GS |
9838 | break; |
9839 | default: | |
9840 | TOPPTR(nss,ix) = Nullop; | |
9841 | break; | |
9842 | } | |
9843 | } | |
9844 | else | |
9845 | TOPPTR(nss,ix) = Nullop; | |
9846 | break; | |
9847 | case SAVEt_FREEPV: | |
9848 | c = (char*)POPPTR(ss,ix); | |
9849 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
9850 | break; | |
9851 | case SAVEt_CLEARSV: | |
9852 | longval = POPLONG(ss,ix); | |
9853 | TOPLONG(nss,ix) = longval; | |
9854 | break; | |
9855 | case SAVEt_DELETE: | |
9856 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 9857 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
9858 | c = (char*)POPPTR(ss,ix); |
9859 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
9860 | i = POPINT(ss,ix); | |
9861 | TOPINT(nss,ix) = i; | |
9862 | break; | |
9863 | case SAVEt_DESTRUCTOR: | |
9864 | ptr = POPPTR(ss,ix); | |
9865 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
9866 | dptr = POPDPTR(ss,ix); | |
8141890a JH |
9867 | TOPDPTR(nss,ix) = DPTR2FPTR(void (*)(void*), |
9868 | any_dup(FPTR2DPTR(void *, dptr), | |
9869 | proto_perl)); | |
1d7c1841 GS |
9870 | break; |
9871 | case SAVEt_DESTRUCTOR_X: | |
9872 | ptr = POPPTR(ss,ix); | |
9873 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
9874 | dxptr = POPDXPTR(ss,ix); | |
8141890a JH |
9875 | TOPDXPTR(nss,ix) = DPTR2FPTR(void (*)(pTHX_ void*), |
9876 | any_dup(FPTR2DPTR(void *, dxptr), | |
9877 | proto_perl)); | |
1d7c1841 GS |
9878 | break; |
9879 | case SAVEt_REGCONTEXT: | |
9880 | case SAVEt_ALLOC: | |
9881 | i = POPINT(ss,ix); | |
9882 | TOPINT(nss,ix) = i; | |
9883 | ix -= i; | |
9884 | break; | |
9885 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
9886 | i = POPINT(ss,ix); | |
9887 | TOPINT(nss,ix) = i; | |
9888 | break; | |
9889 | case SAVEt_AELEM: /* array element */ | |
9890 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 9891 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
9892 | i = POPINT(ss,ix); |
9893 | TOPINT(nss,ix) = i; | |
9894 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 9895 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
9896 | break; |
9897 | case SAVEt_HELEM: /* hash element */ | |
9898 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 9899 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 9900 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 9901 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 9902 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 9903 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
9904 | break; |
9905 | case SAVEt_OP: | |
9906 | ptr = POPPTR(ss,ix); | |
9907 | TOPPTR(nss,ix) = ptr; | |
9908 | break; | |
9909 | case SAVEt_HINTS: | |
9910 | i = POPINT(ss,ix); | |
9911 | TOPINT(nss,ix) = i; | |
9912 | break; | |
c4410b1b GS |
9913 | case SAVEt_COMPPAD: |
9914 | av = (AV*)POPPTR(ss,ix); | |
58ed4fbe | 9915 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 9916 | break; |
c3564e5c GS |
9917 | case SAVEt_PADSV: |
9918 | longval = (long)POPLONG(ss,ix); | |
9919 | TOPLONG(nss,ix) = longval; | |
9920 | ptr = POPPTR(ss,ix); | |
9921 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
9922 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 9923 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 9924 | break; |
a1bb4754 | 9925 | case SAVEt_BOOL: |
38d8b13e | 9926 | ptr = POPPTR(ss,ix); |
b9609c01 | 9927 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 9928 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 9929 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 9930 | break; |
8bd2680e MHM |
9931 | case SAVEt_SET_SVFLAGS: |
9932 | i = POPINT(ss,ix); | |
9933 | TOPINT(nss,ix) = i; | |
9934 | i = POPINT(ss,ix); | |
9935 | TOPINT(nss,ix) = i; | |
9936 | sv = (SV*)POPPTR(ss,ix); | |
9937 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
9938 | break; | |
1d7c1841 GS |
9939 | default: |
9940 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
9941 | } | |
9942 | } | |
9943 | ||
bd81e77b NC |
9944 | return nss; |
9945 | } | |
9946 | ||
9947 | ||
9948 | /* if sv is a stash, call $class->CLONE_SKIP(), and set the SVphv_CLONEABLE | |
9949 | * flag to the result. This is done for each stash before cloning starts, | |
9950 | * so we know which stashes want their objects cloned */ | |
9951 | ||
9952 | static void | |
9953 | do_mark_cloneable_stash(pTHX_ SV *sv) | |
9954 | { | |
9955 | const HEK * const hvname = HvNAME_HEK((HV*)sv); | |
9956 | if (hvname) { | |
9957 | GV* const cloner = gv_fetchmethod_autoload((HV*)sv, "CLONE_SKIP", 0); | |
9958 | SvFLAGS(sv) |= SVphv_CLONEABLE; /* clone objects by default */ | |
9959 | if (cloner && GvCV(cloner)) { | |
9960 | dSP; | |
9961 | UV status; | |
9962 | ||
9963 | ENTER; | |
9964 | SAVETMPS; | |
9965 | PUSHMARK(SP); | |
9966 | XPUSHs(sv_2mortal(newSVhek(hvname))); | |
9967 | PUTBACK; | |
9968 | call_sv((SV*)GvCV(cloner), G_SCALAR); | |
9969 | SPAGAIN; | |
9970 | status = POPu; | |
9971 | PUTBACK; | |
9972 | FREETMPS; | |
9973 | LEAVE; | |
9974 | if (status) | |
9975 | SvFLAGS(sv) &= ~SVphv_CLONEABLE; | |
9976 | } | |
9977 | } | |
9978 | } | |
9979 | ||
9980 | ||
9981 | ||
9982 | /* | |
9983 | =for apidoc perl_clone | |
9984 | ||
9985 | Create and return a new interpreter by cloning the current one. | |
9986 | ||
9987 | perl_clone takes these flags as parameters: | |
9988 | ||
9989 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, | |
9990 | without it we only clone the data and zero the stacks, | |
9991 | with it we copy the stacks and the new perl interpreter is | |
9992 | ready to run at the exact same point as the previous one. | |
9993 | The pseudo-fork code uses COPY_STACKS while the | |
9994 | threads->new doesn't. | |
9995 | ||
9996 | CLONEf_KEEP_PTR_TABLE | |
9997 | perl_clone keeps a ptr_table with the pointer of the old | |
9998 | variable as a key and the new variable as a value, | |
9999 | this allows it to check if something has been cloned and not | |
10000 | clone it again but rather just use the value and increase the | |
10001 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
10002 | the ptr_table using the function | |
10003 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
10004 | reason to keep it around is if you want to dup some of your own | |
10005 | variable who are outside the graph perl scans, example of this | |
10006 | code is in threads.xs create | |
10007 | ||
10008 | CLONEf_CLONE_HOST | |
10009 | This is a win32 thing, it is ignored on unix, it tells perls | |
10010 | win32host code (which is c++) to clone itself, this is needed on | |
10011 | win32 if you want to run two threads at the same time, | |
10012 | if you just want to do some stuff in a separate perl interpreter | |
10013 | and then throw it away and return to the original one, | |
10014 | you don't need to do anything. | |
10015 | ||
10016 | =cut | |
10017 | */ | |
10018 | ||
10019 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
10020 | EXTERN_C PerlInterpreter * | |
10021 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
10022 | ||
10023 | PerlInterpreter * | |
10024 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
10025 | { | |
10026 | dVAR; | |
10027 | #ifdef PERL_IMPLICIT_SYS | |
10028 | ||
10029 | /* perlhost.h so we need to call into it | |
10030 | to clone the host, CPerlHost should have a c interface, sky */ | |
10031 | ||
10032 | if (flags & CLONEf_CLONE_HOST) { | |
10033 | return perl_clone_host(proto_perl,flags); | |
10034 | } | |
10035 | return perl_clone_using(proto_perl, flags, | |
10036 | proto_perl->IMem, | |
10037 | proto_perl->IMemShared, | |
10038 | proto_perl->IMemParse, | |
10039 | proto_perl->IEnv, | |
10040 | proto_perl->IStdIO, | |
10041 | proto_perl->ILIO, | |
10042 | proto_perl->IDir, | |
10043 | proto_perl->ISock, | |
10044 | proto_perl->IProc); | |
10045 | } | |
10046 | ||
10047 | PerlInterpreter * | |
10048 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
10049 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
10050 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
10051 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
10052 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
10053 | struct IPerlProc* ipP) | |
10054 | { | |
10055 | /* XXX many of the string copies here can be optimized if they're | |
10056 | * constants; they need to be allocated as common memory and just | |
10057 | * their pointers copied. */ | |
10058 | ||
10059 | IV i; | |
10060 | CLONE_PARAMS clone_params; | |
10061 | CLONE_PARAMS* param = &clone_params; | |
10062 | ||
10063 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); | |
10064 | /* for each stash, determine whether its objects should be cloned */ | |
10065 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
10066 | PERL_SET_THX(my_perl); | |
10067 | ||
10068 | # ifdef DEBUGGING | |
10069 | Poison(my_perl, 1, PerlInterpreter); | |
10070 | PL_op = Nullop; | |
10071 | PL_curcop = (COP *)Nullop; | |
10072 | PL_markstack = 0; | |
10073 | PL_scopestack = 0; | |
10074 | PL_savestack = 0; | |
10075 | PL_savestack_ix = 0; | |
10076 | PL_savestack_max = -1; | |
10077 | PL_sig_pending = 0; | |
10078 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); | |
10079 | # else /* !DEBUGGING */ | |
10080 | Zero(my_perl, 1, PerlInterpreter); | |
10081 | # endif /* DEBUGGING */ | |
10082 | ||
10083 | /* host pointers */ | |
10084 | PL_Mem = ipM; | |
10085 | PL_MemShared = ipMS; | |
10086 | PL_MemParse = ipMP; | |
10087 | PL_Env = ipE; | |
10088 | PL_StdIO = ipStd; | |
10089 | PL_LIO = ipLIO; | |
10090 | PL_Dir = ipD; | |
10091 | PL_Sock = ipS; | |
10092 | PL_Proc = ipP; | |
10093 | #else /* !PERL_IMPLICIT_SYS */ | |
10094 | IV i; | |
10095 | CLONE_PARAMS clone_params; | |
10096 | CLONE_PARAMS* param = &clone_params; | |
10097 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); | |
10098 | /* for each stash, determine whether its objects should be cloned */ | |
10099 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
10100 | PERL_SET_THX(my_perl); | |
10101 | ||
10102 | # ifdef DEBUGGING | |
10103 | Poison(my_perl, 1, PerlInterpreter); | |
10104 | PL_op = Nullop; | |
10105 | PL_curcop = (COP *)Nullop; | |
10106 | PL_markstack = 0; | |
10107 | PL_scopestack = 0; | |
10108 | PL_savestack = 0; | |
10109 | PL_savestack_ix = 0; | |
10110 | PL_savestack_max = -1; | |
10111 | PL_sig_pending = 0; | |
10112 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); | |
10113 | # else /* !DEBUGGING */ | |
10114 | Zero(my_perl, 1, PerlInterpreter); | |
10115 | # endif /* DEBUGGING */ | |
10116 | #endif /* PERL_IMPLICIT_SYS */ | |
10117 | param->flags = flags; | |
10118 | param->proto_perl = proto_perl; | |
10119 | ||
10120 | Zero(&PL_body_arenaroots, 1, PL_body_arenaroots); | |
10121 | Zero(&PL_body_roots, 1, PL_body_roots); | |
10122 | ||
10123 | PL_nice_chunk = NULL; | |
10124 | PL_nice_chunk_size = 0; | |
10125 | PL_sv_count = 0; | |
10126 | PL_sv_objcount = 0; | |
10127 | PL_sv_root = Nullsv; | |
10128 | PL_sv_arenaroot = Nullsv; | |
10129 | ||
10130 | PL_debug = proto_perl->Idebug; | |
10131 | ||
10132 | PL_hash_seed = proto_perl->Ihash_seed; | |
10133 | PL_rehash_seed = proto_perl->Irehash_seed; | |
10134 | ||
10135 | #ifdef USE_REENTRANT_API | |
10136 | /* XXX: things like -Dm will segfault here in perlio, but doing | |
10137 | * PERL_SET_CONTEXT(proto_perl); | |
10138 | * breaks too many other things | |
10139 | */ | |
10140 | Perl_reentrant_init(aTHX); | |
10141 | #endif | |
10142 | ||
10143 | /* create SV map for pointer relocation */ | |
10144 | PL_ptr_table = ptr_table_new(); | |
10145 | ||
10146 | /* initialize these special pointers as early as possible */ | |
10147 | SvANY(&PL_sv_undef) = NULL; | |
10148 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
10149 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
10150 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
10151 | ||
10152 | SvANY(&PL_sv_no) = new_XPVNV(); | |
10153 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; | |
10154 | SvFLAGS(&PL_sv_no) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK | |
10155 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
10156 | SvPV_set(&PL_sv_no, SAVEPVN(PL_No, 0)); | |
10157 | SvCUR_set(&PL_sv_no, 0); | |
10158 | SvLEN_set(&PL_sv_no, 1); | |
10159 | SvIV_set(&PL_sv_no, 0); | |
10160 | SvNV_set(&PL_sv_no, 0); | |
10161 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); | |
10162 | ||
10163 | SvANY(&PL_sv_yes) = new_XPVNV(); | |
10164 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; | |
10165 | SvFLAGS(&PL_sv_yes) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK | |
10166 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
10167 | SvPV_set(&PL_sv_yes, SAVEPVN(PL_Yes, 1)); | |
10168 | SvCUR_set(&PL_sv_yes, 1); | |
10169 | SvLEN_set(&PL_sv_yes, 2); | |
10170 | SvIV_set(&PL_sv_yes, 1); | |
10171 | SvNV_set(&PL_sv_yes, 1); | |
10172 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); | |
10173 | ||
10174 | /* create (a non-shared!) shared string table */ | |
10175 | PL_strtab = newHV(); | |
10176 | HvSHAREKEYS_off(PL_strtab); | |
10177 | hv_ksplit(PL_strtab, HvTOTALKEYS(proto_perl->Istrtab)); | |
10178 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); | |
10179 | ||
10180 | PL_compiling = proto_perl->Icompiling; | |
10181 | ||
10182 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
10183 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
10184 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
10185 | ||
10186 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
10187 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
10188 | ||
10189 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); | |
10190 | if (!specialWARN(PL_compiling.cop_warnings)) | |
10191 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); | |
10192 | if (!specialCopIO(PL_compiling.cop_io)) | |
10193 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); | |
10194 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); | |
10195 | ||
10196 | /* pseudo environmental stuff */ | |
10197 | PL_origargc = proto_perl->Iorigargc; | |
10198 | PL_origargv = proto_perl->Iorigargv; | |
10199 | ||
10200 | param->stashes = newAV(); /* Setup array of objects to call clone on */ | |
10201 | ||
10202 | /* Set tainting stuff before PerlIO_debug can possibly get called */ | |
10203 | PL_tainting = proto_perl->Itainting; | |
10204 | PL_taint_warn = proto_perl->Itaint_warn; | |
10205 | ||
10206 | #ifdef PERLIO_LAYERS | |
10207 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ | |
10208 | PerlIO_clone(aTHX_ proto_perl, param); | |
10209 | #endif | |
10210 | ||
10211 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
10212 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
10213 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
10214 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); | |
10215 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); | |
10216 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
10217 | ||
10218 | /* switches */ | |
10219 | PL_minus_c = proto_perl->Iminus_c; | |
10220 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); | |
10221 | PL_localpatches = proto_perl->Ilocalpatches; | |
10222 | PL_splitstr = proto_perl->Isplitstr; | |
10223 | PL_preprocess = proto_perl->Ipreprocess; | |
10224 | PL_minus_n = proto_perl->Iminus_n; | |
10225 | PL_minus_p = proto_perl->Iminus_p; | |
10226 | PL_minus_l = proto_perl->Iminus_l; | |
10227 | PL_minus_a = proto_perl->Iminus_a; | |
10228 | PL_minus_F = proto_perl->Iminus_F; | |
10229 | PL_doswitches = proto_perl->Idoswitches; | |
10230 | PL_dowarn = proto_perl->Idowarn; | |
10231 | PL_doextract = proto_perl->Idoextract; | |
10232 | PL_sawampersand = proto_perl->Isawampersand; | |
10233 | PL_unsafe = proto_perl->Iunsafe; | |
10234 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
10235 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); | |
10236 | PL_perldb = proto_perl->Iperldb; | |
10237 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
10238 | PL_exit_flags = proto_perl->Iexit_flags; | |
10239 | ||
10240 | /* magical thingies */ | |
10241 | /* XXX time(&PL_basetime) when asked for? */ | |
10242 | PL_basetime = proto_perl->Ibasetime; | |
10243 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); | |
10244 | ||
10245 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
10246 | PL_multiline = proto_perl->Imultiline; | |
10247 | PL_statusvalue = proto_perl->Istatusvalue; | |
10248 | #ifdef VMS | |
10249 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
10250 | #else | |
10251 | PL_statusvalue_posix = proto_perl->Istatusvalue_posix; | |
10252 | #endif | |
10253 | PL_encoding = sv_dup(proto_perl->Iencoding, param); | |
10254 | ||
10255 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ | |
10256 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ | |
10257 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
10258 | ||
10259 | /* Clone the regex array */ | |
10260 | PL_regex_padav = newAV(); | |
10261 | { | |
10262 | const I32 len = av_len((AV*)proto_perl->Iregex_padav); | |
10263 | SV** const regexen = AvARRAY((AV*)proto_perl->Iregex_padav); | |
10264 | IV i; | |
10265 | av_push(PL_regex_padav, | |
10266 | sv_dup_inc(regexen[0],param)); | |
10267 | for(i = 1; i <= len; i++) { | |
10268 | if(SvREPADTMP(regexen[i])) { | |
10269 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
10270 | } else { | |
10271 | av_push(PL_regex_padav, | |
10272 | SvREFCNT_inc( | |
10273 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, | |
10274 | SvIVX(regexen[i])), param))) | |
10275 | )); | |
10276 | } | |
10277 | } | |
10278 | } | |
10279 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
10280 | ||
10281 | /* shortcuts to various I/O objects */ | |
10282 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); | |
10283 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
10284 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
10285 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
10286 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
10287 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 | 10288 | |
bd81e77b NC |
10289 | /* shortcuts to regexp stuff */ |
10290 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); | |
9660f481 | 10291 | |
bd81e77b NC |
10292 | /* shortcuts to misc objects */ |
10293 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); | |
9660f481 | 10294 | |
bd81e77b NC |
10295 | /* shortcuts to debugging objects */ |
10296 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); | |
10297 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
10298 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
10299 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
10300 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
10301 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
10302 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); | |
10303 | PL_lineary = av_dup(proto_perl->Ilineary, param); | |
10304 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
9660f481 | 10305 | |
bd81e77b NC |
10306 | /* symbol tables */ |
10307 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); | |
10308 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
10309 | PL_debstash = hv_dup(proto_perl->Idebstash, param); | |
10310 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
10311 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
10312 | ||
10313 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
10314 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); | |
10315 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); | |
10316 | PL_endav = av_dup_inc(proto_perl->Iendav, param); | |
10317 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
10318 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
10319 | ||
10320 | PL_sub_generation = proto_perl->Isub_generation; | |
10321 | ||
10322 | /* funky return mechanisms */ | |
10323 | PL_forkprocess = proto_perl->Iforkprocess; | |
10324 | ||
10325 | /* subprocess state */ | |
10326 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); | |
10327 | ||
10328 | /* internal state */ | |
10329 | PL_maxo = proto_perl->Imaxo; | |
10330 | if (proto_perl->Iop_mask) | |
10331 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
10332 | else | |
10333 | PL_op_mask = Nullch; | |
10334 | /* PL_asserting = proto_perl->Iasserting; */ | |
10335 | ||
10336 | /* current interpreter roots */ | |
10337 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); | |
10338 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); | |
10339 | PL_main_start = proto_perl->Imain_start; | |
10340 | PL_eval_root = proto_perl->Ieval_root; | |
10341 | PL_eval_start = proto_perl->Ieval_start; | |
10342 | ||
10343 | /* runtime control stuff */ | |
10344 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
10345 | PL_copline = proto_perl->Icopline; | |
10346 | ||
10347 | PL_filemode = proto_perl->Ifilemode; | |
10348 | PL_lastfd = proto_perl->Ilastfd; | |
10349 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
10350 | PL_Argv = NULL; | |
10351 | PL_Cmd = Nullch; | |
10352 | PL_gensym = proto_perl->Igensym; | |
10353 | PL_preambled = proto_perl->Ipreambled; | |
10354 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); | |
10355 | PL_laststatval = proto_perl->Ilaststatval; | |
10356 | PL_laststype = proto_perl->Ilaststype; | |
10357 | PL_mess_sv = Nullsv; | |
10358 | ||
10359 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); | |
10360 | ||
10361 | /* interpreter atexit processing */ | |
10362 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
10363 | if (PL_exitlistlen) { | |
10364 | Newx(PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
10365 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
9660f481 | 10366 | } |
bd81e77b NC |
10367 | else |
10368 | PL_exitlist = (PerlExitListEntry*)NULL; | |
10369 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); | |
10370 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); | |
10371 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
10372 | ||
10373 | PL_profiledata = NULL; | |
10374 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); | |
10375 | /* PL_rsfp_filters entries have fake IoDIRP() */ | |
10376 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); | |
9660f481 | 10377 | |
bd81e77b | 10378 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
9660f481 | 10379 | |
bd81e77b | 10380 | PAD_CLONE_VARS(proto_perl, param); |
9660f481 | 10381 | |
bd81e77b NC |
10382 | #ifdef HAVE_INTERP_INTERN |
10383 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
10384 | #endif | |
645c22ef | 10385 | |
bd81e77b NC |
10386 | /* more statics moved here */ |
10387 | PL_generation = proto_perl->Igeneration; | |
10388 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); | |
645c22ef | 10389 | |
bd81e77b NC |
10390 | PL_in_clean_objs = proto_perl->Iin_clean_objs; |
10391 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
6a78b4db | 10392 | |
bd81e77b NC |
10393 | PL_uid = proto_perl->Iuid; |
10394 | PL_euid = proto_perl->Ieuid; | |
10395 | PL_gid = proto_perl->Igid; | |
10396 | PL_egid = proto_perl->Iegid; | |
10397 | PL_nomemok = proto_perl->Inomemok; | |
10398 | PL_an = proto_perl->Ian; | |
10399 | PL_evalseq = proto_perl->Ievalseq; | |
10400 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
10401 | PL_origalen = proto_perl->Iorigalen; | |
10402 | #ifdef PERL_USES_PL_PIDSTATUS | |
10403 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
10404 | #endif | |
10405 | PL_osname = SAVEPV(proto_perl->Iosname); | |
10406 | PL_sighandlerp = proto_perl->Isighandlerp; | |
6a78b4db | 10407 | |
bd81e77b | 10408 | PL_runops = proto_perl->Irunops; |
6a78b4db | 10409 | |
bd81e77b | 10410 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); |
6a78b4db | 10411 | |
bd81e77b NC |
10412 | #ifdef CSH |
10413 | PL_cshlen = proto_perl->Icshlen; | |
10414 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ | |
10415 | #endif | |
645c22ef | 10416 | |
bd81e77b NC |
10417 | PL_lex_state = proto_perl->Ilex_state; |
10418 | PL_lex_defer = proto_perl->Ilex_defer; | |
10419 | PL_lex_expect = proto_perl->Ilex_expect; | |
10420 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
10421 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
10422 | PL_lex_starts = proto_perl->Ilex_starts; | |
10423 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); | |
10424 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
10425 | PL_lex_op = proto_perl->Ilex_op; | |
10426 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
10427 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
10428 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
10429 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
10430 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
10431 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
10432 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
10433 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
645c22ef | 10434 | |
bd81e77b NC |
10435 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); |
10436 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
10437 | PL_nexttoke = proto_perl->Inexttoke; | |
c43294b8 | 10438 | |
bd81e77b NC |
10439 | /* XXX This is probably masking the deeper issue of why |
10440 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
10441 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
10442 | * (A little debugging with a watchpoint on it may help.) | |
10443 | */ | |
10444 | if (SvANY(proto_perl->Ilinestr)) { | |
10445 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
10446 | i = proto_perl->Ibufptr - SvPVX_const(proto_perl->Ilinestr); | |
10447 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
10448 | i = proto_perl->Ioldbufptr - SvPVX_const(proto_perl->Ilinestr); | |
10449 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
10450 | i = proto_perl->Ioldoldbufptr - SvPVX_const(proto_perl->Ilinestr); | |
10451 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
10452 | i = proto_perl->Ilinestart - SvPVX_const(proto_perl->Ilinestr); | |
10453 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
10454 | } | |
10455 | else { | |
10456 | PL_linestr = NEWSV(65,79); | |
10457 | sv_upgrade(PL_linestr,SVt_PVIV); | |
10458 | sv_setpvn(PL_linestr,"",0); | |
10459 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
10460 | } | |
10461 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
10462 | PL_pending_ident = proto_perl->Ipending_ident; | |
10463 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
10464 | ||
10465 | PL_expect = proto_perl->Iexpect; | |
10466 | ||
10467 | PL_multi_start = proto_perl->Imulti_start; | |
10468 | PL_multi_end = proto_perl->Imulti_end; | |
10469 | PL_multi_open = proto_perl->Imulti_open; | |
10470 | PL_multi_close = proto_perl->Imulti_close; | |
10471 | ||
10472 | PL_error_count = proto_perl->Ierror_count; | |
10473 | PL_subline = proto_perl->Isubline; | |
10474 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); | |
c43294b8 | 10475 | |
bd81e77b NC |
10476 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
10477 | if (SvANY(proto_perl->Ilinestr)) { | |
10478 | i = proto_perl->Ilast_uni - SvPVX_const(proto_perl->Ilinestr); | |
10479 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
10480 | i = proto_perl->Ilast_lop - SvPVX_const(proto_perl->Ilinestr); | |
10481 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
10482 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
10483 | } | |
10484 | else { | |
10485 | PL_last_uni = SvPVX(PL_linestr); | |
10486 | PL_last_lop = SvPVX(PL_linestr); | |
10487 | PL_last_lop_op = 0; | |
10488 | } | |
10489 | PL_in_my = proto_perl->Iin_my; | |
10490 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); | |
10491 | #ifdef FCRYPT | |
10492 | PL_cryptseen = proto_perl->Icryptseen; | |
10493 | #endif | |
1d7c1841 | 10494 | |
bd81e77b | 10495 | PL_hints = proto_perl->Ihints; |
1d7c1841 | 10496 | |
bd81e77b | 10497 | PL_amagic_generation = proto_perl->Iamagic_generation; |
d2d73c3e | 10498 | |
bd81e77b NC |
10499 | #ifdef USE_LOCALE_COLLATE |
10500 | PL_collation_ix = proto_perl->Icollation_ix; | |
10501 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
10502 | PL_collation_standard = proto_perl->Icollation_standard; | |
10503 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
10504 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
10505 | #endif /* USE_LOCALE_COLLATE */ | |
1d7c1841 | 10506 | |
bd81e77b NC |
10507 | #ifdef USE_LOCALE_NUMERIC |
10508 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
10509 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
10510 | PL_numeric_local = proto_perl->Inumeric_local; | |
10511 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); | |
10512 | #endif /* !USE_LOCALE_NUMERIC */ | |
1d7c1841 | 10513 | |
bd81e77b NC |
10514 | /* utf8 character classes */ |
10515 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); | |
10516 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
10517 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
10518 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
10519 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
10520 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
10521 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
10522 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
10523 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
10524 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
10525 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
10526 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
10527 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
10528 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
10529 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
10530 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
10531 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
10532 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); | |
10533 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); | |
10534 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 10535 | |
bd81e77b NC |
10536 | /* Did the locale setup indicate UTF-8? */ |
10537 | PL_utf8locale = proto_perl->Iutf8locale; | |
10538 | /* Unicode features (see perlrun/-C) */ | |
10539 | PL_unicode = proto_perl->Iunicode; | |
1d7c1841 | 10540 | |
bd81e77b NC |
10541 | /* Pre-5.8 signals control */ |
10542 | PL_signals = proto_perl->Isignals; | |
1d7c1841 | 10543 | |
bd81e77b NC |
10544 | /* times() ticks per second */ |
10545 | PL_clocktick = proto_perl->Iclocktick; | |
1d7c1841 | 10546 | |
bd81e77b NC |
10547 | /* Recursion stopper for PerlIO_find_layer */ |
10548 | PL_in_load_module = proto_perl->Iin_load_module; | |
8df990a8 | 10549 | |
bd81e77b NC |
10550 | /* sort() routine */ |
10551 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
e5dd39fc | 10552 | |
bd81e77b NC |
10553 | /* Not really needed/useful since the reenrant_retint is "volatile", |
10554 | * but do it for consistency's sake. */ | |
10555 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
1d7c1841 | 10556 | |
bd81e77b NC |
10557 | /* Hooks to shared SVs and locks. */ |
10558 | PL_sharehook = proto_perl->Isharehook; | |
10559 | PL_lockhook = proto_perl->Ilockhook; | |
10560 | PL_unlockhook = proto_perl->Iunlockhook; | |
10561 | PL_threadhook = proto_perl->Ithreadhook; | |
1d7c1841 | 10562 | |
bd81e77b NC |
10563 | PL_runops_std = proto_perl->Irunops_std; |
10564 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
1d7c1841 | 10565 | |
bd81e77b NC |
10566 | #ifdef THREADS_HAVE_PIDS |
10567 | PL_ppid = proto_perl->Ippid; | |
10568 | #endif | |
1d7c1841 | 10569 | |
bd81e77b NC |
10570 | /* swatch cache */ |
10571 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
10572 | PL_last_swash_klen = 0; | |
10573 | PL_last_swash_key[0]= '\0'; | |
10574 | PL_last_swash_tmps = (U8*)NULL; | |
10575 | PL_last_swash_slen = 0; | |
1d7c1841 | 10576 | |
bd81e77b NC |
10577 | PL_glob_index = proto_perl->Iglob_index; |
10578 | PL_srand_called = proto_perl->Isrand_called; | |
10579 | PL_uudmap['M'] = 0; /* reinits on demand */ | |
10580 | PL_bitcount = Nullch; /* reinits on demand */ | |
05ec9bb3 | 10581 | |
bd81e77b NC |
10582 | if (proto_perl->Ipsig_pend) { |
10583 | Newxz(PL_psig_pend, SIG_SIZE, int); | |
10584 | } | |
10585 | else { | |
10586 | PL_psig_pend = (int*)NULL; | |
10587 | } | |
05ec9bb3 | 10588 | |
bd81e77b NC |
10589 | if (proto_perl->Ipsig_ptr) { |
10590 | Newxz(PL_psig_ptr, SIG_SIZE, SV*); | |
10591 | Newxz(PL_psig_name, SIG_SIZE, SV*); | |
10592 | for (i = 1; i < SIG_SIZE; i++) { | |
10593 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); | |
10594 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
10595 | } | |
10596 | } | |
10597 | else { | |
10598 | PL_psig_ptr = (SV**)NULL; | |
10599 | PL_psig_name = (SV**)NULL; | |
10600 | } | |
05ec9bb3 | 10601 | |
bd81e77b | 10602 | /* thrdvar.h stuff */ |
1d7c1841 | 10603 | |
bd81e77b NC |
10604 | if (flags & CLONEf_COPY_STACKS) { |
10605 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ | |
10606 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
10607 | PL_tmps_max = proto_perl->Ttmps_max; | |
10608 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
10609 | Newxz(PL_tmps_stack, PL_tmps_max, SV*); | |
10610 | i = 0; | |
10611 | while (i <= PL_tmps_ix) { | |
10612 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); | |
10613 | ++i; | |
10614 | } | |
d2d73c3e | 10615 | |
bd81e77b NC |
10616 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ |
10617 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
10618 | Newxz(PL_markstack, i, I32); | |
10619 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
10620 | - proto_perl->Tmarkstack); | |
10621 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
10622 | - proto_perl->Tmarkstack); | |
10623 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
10624 | PL_markstack_ptr - PL_markstack + 1, I32); | |
d2d73c3e | 10625 | |
bd81e77b NC |
10626 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] |
10627 | * NOTE: unlike the others! */ | |
10628 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
10629 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
10630 | Newxz(PL_scopestack, PL_scopestack_max, I32); | |
10631 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
d419787a | 10632 | |
bd81e77b NC |
10633 | /* NOTE: si_dup() looks at PL_markstack */ |
10634 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); | |
d2d73c3e | 10635 | |
bd81e77b NC |
10636 | /* PL_curstack = PL_curstackinfo->si_stack; */ |
10637 | PL_curstack = av_dup(proto_perl->Tcurstack, param); | |
10638 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 | 10639 | |
bd81e77b NC |
10640 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ |
10641 | PL_stack_base = AvARRAY(PL_curstack); | |
10642 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
10643 | - proto_perl->Tstack_base); | |
10644 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
1d7c1841 | 10645 | |
bd81e77b NC |
10646 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] |
10647 | * NOTE: unlike the others! */ | |
10648 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
10649 | PL_savestack_max = proto_perl->Tsavestack_max; | |
10650 | /*Newxz(PL_savestack, PL_savestack_max, ANY);*/ | |
10651 | PL_savestack = ss_dup(proto_perl, param); | |
10652 | } | |
10653 | else { | |
10654 | init_stacks(); | |
10655 | ENTER; /* perl_destruct() wants to LEAVE; */ | |
10656 | } | |
1d7c1841 | 10657 | |
bd81e77b NC |
10658 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ |
10659 | PL_top_env = &PL_start_env; | |
1d7c1841 | 10660 | |
bd81e77b | 10661 | PL_op = proto_perl->Top; |
4a4c6fe3 | 10662 | |
bd81e77b NC |
10663 | PL_Sv = Nullsv; |
10664 | PL_Xpv = (XPV*)NULL; | |
10665 | PL_na = proto_perl->Tna; | |
1fcf4c12 | 10666 | |
bd81e77b NC |
10667 | PL_statbuf = proto_perl->Tstatbuf; |
10668 | PL_statcache = proto_perl->Tstatcache; | |
10669 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); | |
10670 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
10671 | #ifdef HAS_TIMES | |
10672 | PL_timesbuf = proto_perl->Ttimesbuf; | |
10673 | #endif | |
1d7c1841 | 10674 | |
bd81e77b NC |
10675 | PL_tainted = proto_perl->Ttainted; |
10676 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
10677 | PL_rs = sv_dup_inc(proto_perl->Trs, param); | |
10678 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
10679 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
10680 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
10681 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ | |
10682 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); | |
10683 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
10684 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 | 10685 | |
bd81e77b NC |
10686 | PL_restartop = proto_perl->Trestartop; |
10687 | PL_in_eval = proto_perl->Tin_eval; | |
10688 | PL_delaymagic = proto_perl->Tdelaymagic; | |
10689 | PL_dirty = proto_perl->Tdirty; | |
10690 | PL_localizing = proto_perl->Tlocalizing; | |
1d7c1841 | 10691 | |
bd81e77b NC |
10692 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
10693 | PL_hv_fetch_ent_mh = Nullhe; | |
10694 | PL_modcount = proto_perl->Tmodcount; | |
10695 | PL_lastgotoprobe = Nullop; | |
10696 | PL_dumpindent = proto_perl->Tdumpindent; | |
1d7c1841 | 10697 | |
bd81e77b NC |
10698 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); |
10699 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); | |
10700 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
10701 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
10702 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
10703 | PL_efloatsize = 0; /* reinits on demand */ | |
d2d73c3e | 10704 | |
bd81e77b | 10705 | /* regex stuff */ |
1d7c1841 | 10706 | |
bd81e77b NC |
10707 | PL_screamfirst = NULL; |
10708 | PL_screamnext = NULL; | |
10709 | PL_maxscream = -1; /* reinits on demand */ | |
10710 | PL_lastscream = Nullsv; | |
1d7c1841 | 10711 | |
bd81e77b NC |
10712 | PL_watchaddr = NULL; |
10713 | PL_watchok = Nullch; | |
1d7c1841 | 10714 | |
bd81e77b NC |
10715 | PL_regdummy = proto_perl->Tregdummy; |
10716 | PL_regprecomp = Nullch; | |
10717 | PL_regnpar = 0; | |
10718 | PL_regsize = 0; | |
10719 | PL_colorset = 0; /* reinits PL_colors[] */ | |
10720 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
10721 | PL_reginput = Nullch; | |
10722 | PL_regbol = Nullch; | |
10723 | PL_regeol = Nullch; | |
10724 | PL_regstartp = (I32*)NULL; | |
10725 | PL_regendp = (I32*)NULL; | |
10726 | PL_reglastparen = (U32*)NULL; | |
10727 | PL_reglastcloseparen = (U32*)NULL; | |
10728 | PL_regtill = Nullch; | |
10729 | PL_reg_start_tmp = (char**)NULL; | |
10730 | PL_reg_start_tmpl = 0; | |
10731 | PL_regdata = (struct reg_data*)NULL; | |
10732 | PL_bostr = Nullch; | |
10733 | PL_reg_flags = 0; | |
10734 | PL_reg_eval_set = 0; | |
10735 | PL_regnarrate = 0; | |
10736 | PL_regprogram = (regnode*)NULL; | |
10737 | PL_regindent = 0; | |
10738 | PL_regcc = (CURCUR*)NULL; | |
10739 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
10740 | PL_reg_re = (regexp*)NULL; | |
10741 | PL_reg_ganch = Nullch; | |
10742 | PL_reg_sv = Nullsv; | |
10743 | PL_reg_match_utf8 = FALSE; | |
10744 | PL_reg_magic = (MAGIC*)NULL; | |
10745 | PL_reg_oldpos = 0; | |
10746 | PL_reg_oldcurpm = (PMOP*)NULL; | |
10747 | PL_reg_curpm = (PMOP*)NULL; | |
10748 | PL_reg_oldsaved = Nullch; | |
10749 | PL_reg_oldsavedlen = 0; | |
10750 | #ifdef PERL_OLD_COPY_ON_WRITE | |
10751 | PL_nrs = Nullsv; | |
10752 | #endif | |
10753 | PL_reg_maxiter = 0; | |
10754 | PL_reg_leftiter = 0; | |
10755 | PL_reg_poscache = Nullch; | |
10756 | PL_reg_poscache_size= 0; | |
1d7c1841 | 10757 | |
bd81e77b NC |
10758 | /* RE engine - function pointers */ |
10759 | PL_regcompp = proto_perl->Tregcompp; | |
10760 | PL_regexecp = proto_perl->Tregexecp; | |
10761 | PL_regint_start = proto_perl->Tregint_start; | |
10762 | PL_regint_string = proto_perl->Tregint_string; | |
10763 | PL_regfree = proto_perl->Tregfree; | |
1d7c1841 | 10764 | |
bd81e77b NC |
10765 | PL_reginterp_cnt = 0; |
10766 | PL_reg_starttry = 0; | |
1d7c1841 | 10767 | |
bd81e77b NC |
10768 | /* Pluggable optimizer */ |
10769 | PL_peepp = proto_perl->Tpeepp; | |
1d7c1841 | 10770 | |
bd81e77b | 10771 | PL_stashcache = newHV(); |
1d7c1841 | 10772 | |
bd81e77b NC |
10773 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
10774 | ptr_table_free(PL_ptr_table); | |
10775 | PL_ptr_table = NULL; | |
10776 | } | |
1d7c1841 | 10777 | |
bd81e77b NC |
10778 | /* Call the ->CLONE method, if it exists, for each of the stashes |
10779 | identified by sv_dup() above. | |
10780 | */ | |
10781 | while(av_len(param->stashes) != -1) { | |
10782 | HV* const stash = (HV*) av_shift(param->stashes); | |
10783 | GV* const cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); | |
10784 | if (cloner && GvCV(cloner)) { | |
10785 | dSP; | |
10786 | ENTER; | |
10787 | SAVETMPS; | |
10788 | PUSHMARK(SP); | |
10789 | XPUSHs(sv_2mortal(newSVhek(HvNAME_HEK(stash)))); | |
10790 | PUTBACK; | |
10791 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
10792 | FREETMPS; | |
10793 | LEAVE; | |
10794 | } | |
1d7c1841 | 10795 | } |
1d7c1841 | 10796 | |
bd81e77b | 10797 | SvREFCNT_dec(param->stashes); |
1d7c1841 | 10798 | |
bd81e77b NC |
10799 | /* orphaned? eg threads->new inside BEGIN or use */ |
10800 | if (PL_compcv && ! SvREFCNT(PL_compcv)) { | |
10801 | (void)SvREFCNT_inc(PL_compcv); | |
10802 | SAVEFREESV(PL_compcv); | |
10803 | } | |
dd2155a4 | 10804 | |
bd81e77b NC |
10805 | return my_perl; |
10806 | } | |
1d7c1841 | 10807 | |
bd81e77b | 10808 | #endif /* USE_ITHREADS */ |
1d7c1841 | 10809 | |
bd81e77b NC |
10810 | /* |
10811 | =head1 Unicode Support | |
1d7c1841 | 10812 | |
bd81e77b | 10813 | =for apidoc sv_recode_to_utf8 |
1d7c1841 | 10814 | |
bd81e77b NC |
10815 | The encoding is assumed to be an Encode object, on entry the PV |
10816 | of the sv is assumed to be octets in that encoding, and the sv | |
10817 | will be converted into Unicode (and UTF-8). | |
1d7c1841 | 10818 | |
bd81e77b NC |
10819 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
10820 | is not a reference, nothing is done to the sv. If the encoding is not | |
10821 | an C<Encode::XS> Encoding object, bad things will happen. | |
10822 | (See F<lib/encoding.pm> and L<Encode>). | |
1d7c1841 | 10823 | |
bd81e77b | 10824 | The PV of the sv is returned. |
1d7c1841 | 10825 | |
bd81e77b | 10826 | =cut */ |
1d7c1841 | 10827 | |
bd81e77b NC |
10828 | char * |
10829 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
10830 | { | |
10831 | dVAR; | |
10832 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { | |
10833 | SV *uni; | |
10834 | STRLEN len; | |
10835 | const char *s; | |
10836 | dSP; | |
10837 | ENTER; | |
10838 | SAVETMPS; | |
10839 | save_re_context(); | |
10840 | PUSHMARK(sp); | |
10841 | EXTEND(SP, 3); | |
10842 | XPUSHs(encoding); | |
10843 | XPUSHs(sv); | |
10844 | /* | |
10845 | NI-S 2002/07/09 | |
10846 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
10847 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means | |
10848 | remove converted chars from source. | |
1d7c1841 | 10849 | |
bd81e77b | 10850 | Both will default the value - let them. |
1d7c1841 | 10851 | |
bd81e77b NC |
10852 | XPUSHs(&PL_sv_yes); |
10853 | */ | |
10854 | PUTBACK; | |
10855 | call_method("decode", G_SCALAR); | |
10856 | SPAGAIN; | |
10857 | uni = POPs; | |
10858 | PUTBACK; | |
10859 | s = SvPV_const(uni, len); | |
10860 | if (s != SvPVX_const(sv)) { | |
10861 | SvGROW(sv, len + 1); | |
10862 | Move(s, SvPVX(sv), len + 1, char); | |
10863 | SvCUR_set(sv, len); | |
10864 | } | |
10865 | FREETMPS; | |
10866 | LEAVE; | |
10867 | SvUTF8_on(sv); | |
10868 | return SvPVX(sv); | |
389edf32 | 10869 | } |
bd81e77b NC |
10870 | return SvPOKp(sv) ? SvPVX(sv) : NULL; |
10871 | } | |
1d7c1841 | 10872 | |
bd81e77b NC |
10873 | /* |
10874 | =for apidoc sv_cat_decode | |
1d7c1841 | 10875 | |
bd81e77b NC |
10876 | The encoding is assumed to be an Encode object, the PV of the ssv is |
10877 | assumed to be octets in that encoding and decoding the input starts | |
10878 | from the position which (PV + *offset) pointed to. The dsv will be | |
10879 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
10880 | when the string tstr appears in decoding output or the input ends on | |
10881 | the PV of the ssv. The value which the offset points will be modified | |
10882 | to the last input position on the ssv. | |
1d7c1841 | 10883 | |
bd81e77b | 10884 | Returns TRUE if the terminator was found, else returns FALSE. |
1d7c1841 | 10885 | |
bd81e77b NC |
10886 | =cut */ |
10887 | ||
10888 | bool | |
10889 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
10890 | SV *ssv, int *offset, char *tstr, int tlen) | |
10891 | { | |
10892 | dVAR; | |
10893 | bool ret = FALSE; | |
10894 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { | |
10895 | SV *offsv; | |
10896 | dSP; | |
10897 | ENTER; | |
10898 | SAVETMPS; | |
10899 | save_re_context(); | |
10900 | PUSHMARK(sp); | |
10901 | EXTEND(SP, 6); | |
10902 | XPUSHs(encoding); | |
10903 | XPUSHs(dsv); | |
10904 | XPUSHs(ssv); | |
10905 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
10906 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
10907 | PUTBACK; | |
10908 | call_method("cat_decode", G_SCALAR); | |
10909 | SPAGAIN; | |
10910 | ret = SvTRUE(TOPs); | |
10911 | *offset = SvIV(offsv); | |
10912 | PUTBACK; | |
10913 | FREETMPS; | |
10914 | LEAVE; | |
389edf32 | 10915 | } |
bd81e77b NC |
10916 | else |
10917 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
10918 | return ret; | |
1d7c1841 | 10919 | |
bd81e77b | 10920 | } |
1d7c1841 | 10921 | |
bd81e77b NC |
10922 | /* --------------------------------------------------------------------- |
10923 | * | |
10924 | * support functions for report_uninit() | |
10925 | */ | |
1d7c1841 | 10926 | |
bd81e77b NC |
10927 | /* the maxiumum size of array or hash where we will scan looking |
10928 | * for the undefined element that triggered the warning */ | |
1d7c1841 | 10929 | |
bd81e77b | 10930 | #define FUV_MAX_SEARCH_SIZE 1000 |
1d7c1841 | 10931 | |
bd81e77b NC |
10932 | /* Look for an entry in the hash whose value has the same SV as val; |
10933 | * If so, return a mortal copy of the key. */ | |
1d7c1841 | 10934 | |
bd81e77b NC |
10935 | STATIC SV* |
10936 | S_find_hash_subscript(pTHX_ HV *hv, SV* val) | |
10937 | { | |
10938 | dVAR; | |
10939 | register HE **array; | |
10940 | I32 i; | |
6c3182a5 | 10941 | |
bd81e77b NC |
10942 | if (!hv || SvMAGICAL(hv) || !HvARRAY(hv) || |
10943 | (HvTOTALKEYS(hv) > FUV_MAX_SEARCH_SIZE)) | |
10944 | return Nullsv; | |
6c3182a5 | 10945 | |
bd81e77b | 10946 | array = HvARRAY(hv); |
6c3182a5 | 10947 | |
bd81e77b NC |
10948 | for (i=HvMAX(hv); i>0; i--) { |
10949 | register HE *entry; | |
10950 | for (entry = array[i]; entry; entry = HeNEXT(entry)) { | |
10951 | if (HeVAL(entry) != val) | |
10952 | continue; | |
10953 | if ( HeVAL(entry) == &PL_sv_undef || | |
10954 | HeVAL(entry) == &PL_sv_placeholder) | |
10955 | continue; | |
10956 | if (!HeKEY(entry)) | |
10957 | return Nullsv; | |
10958 | if (HeKLEN(entry) == HEf_SVKEY) | |
10959 | return sv_mortalcopy(HeKEY_sv(entry)); | |
10960 | return sv_2mortal(newSVpvn(HeKEY(entry), HeKLEN(entry))); | |
10961 | } | |
10962 | } | |
10963 | return Nullsv; | |
10964 | } | |
6c3182a5 | 10965 | |
bd81e77b NC |
10966 | /* Look for an entry in the array whose value has the same SV as val; |
10967 | * If so, return the index, otherwise return -1. */ | |
6c3182a5 | 10968 | |
bd81e77b NC |
10969 | STATIC I32 |
10970 | S_find_array_subscript(pTHX_ AV *av, SV* val) | |
10971 | { | |
10972 | SV** svp; | |
10973 | I32 i; | |
10974 | if (!av || SvMAGICAL(av) || !AvARRAY(av) || | |
10975 | (AvFILLp(av) > FUV_MAX_SEARCH_SIZE)) | |
10976 | return -1; | |
57c6e6d2 | 10977 | |
bd81e77b NC |
10978 | svp = AvARRAY(av); |
10979 | for (i=AvFILLp(av); i>=0; i--) { | |
10980 | if (svp[i] == val && svp[i] != &PL_sv_undef) | |
10981 | return i; | |
10982 | } | |
10983 | return -1; | |
10984 | } | |
15a5279a | 10985 | |
bd81e77b NC |
10986 | /* S_varname(): return the name of a variable, optionally with a subscript. |
10987 | * If gv is non-zero, use the name of that global, along with gvtype (one | |
10988 | * of "$", "@", "%"); otherwise use the name of the lexical at pad offset | |
10989 | * targ. Depending on the value of the subscript_type flag, return: | |
10990 | */ | |
bce260cd | 10991 | |
bd81e77b NC |
10992 | #define FUV_SUBSCRIPT_NONE 1 /* "@foo" */ |
10993 | #define FUV_SUBSCRIPT_ARRAY 2 /* "$foo[aindex]" */ | |
10994 | #define FUV_SUBSCRIPT_HASH 3 /* "$foo{keyname}" */ | |
10995 | #define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */ | |
bce260cd | 10996 | |
bd81e77b NC |
10997 | STATIC SV* |
10998 | S_varname(pTHX_ GV *gv, const char gvtype, PADOFFSET targ, | |
10999 | SV* keyname, I32 aindex, int subscript_type) | |
11000 | { | |
1d7c1841 | 11001 | |
bd81e77b NC |
11002 | SV * const name = sv_newmortal(); |
11003 | if (gv) { | |
11004 | char buffer[2]; | |
11005 | buffer[0] = gvtype; | |
11006 | buffer[1] = 0; | |
1d7c1841 | 11007 | |
bd81e77b | 11008 | /* as gv_fullname4(), but add literal '^' for $^FOO names */ |
66fe0623 | 11009 | |
bd81e77b | 11010 | gv_fullname4(name, gv, buffer, 0); |
1d7c1841 | 11011 | |
bd81e77b NC |
11012 | if ((unsigned int)SvPVX(name)[1] <= 26) { |
11013 | buffer[0] = '^'; | |
11014 | buffer[1] = SvPVX(name)[1] + 'A' - 1; | |
1d7c1841 | 11015 | |
bd81e77b NC |
11016 | /* Swap the 1 unprintable control character for the 2 byte pretty |
11017 | version - ie substr($name, 1, 1) = $buffer; */ | |
11018 | sv_insert(name, 1, 1, buffer, 2); | |
1d7c1841 | 11019 | } |
bd81e77b NC |
11020 | } |
11021 | else { | |
11022 | U32 unused; | |
11023 | CV * const cv = find_runcv(&unused); | |
11024 | SV *sv; | |
11025 | AV *av; | |
1d7c1841 | 11026 | |
bd81e77b NC |
11027 | if (!cv || !CvPADLIST(cv)) |
11028 | return Nullsv; | |
11029 | av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE)); | |
11030 | sv = *av_fetch(av, targ, FALSE); | |
11031 | /* SvLEN in a pad name is not to be trusted */ | |
11032 | sv_setpv(name, SvPV_nolen_const(sv)); | |
11033 | } | |
1d7c1841 | 11034 | |
bd81e77b NC |
11035 | if (subscript_type == FUV_SUBSCRIPT_HASH) { |
11036 | SV * const sv = NEWSV(0,0); | |
11037 | *SvPVX(name) = '$'; | |
11038 | Perl_sv_catpvf(aTHX_ name, "{%s}", | |
11039 | pv_display(sv,SvPVX_const(keyname), SvCUR(keyname), 0, 32)); | |
11040 | SvREFCNT_dec(sv); | |
11041 | } | |
11042 | else if (subscript_type == FUV_SUBSCRIPT_ARRAY) { | |
11043 | *SvPVX(name) = '$'; | |
11044 | Perl_sv_catpvf(aTHX_ name, "[%"IVdf"]", (IV)aindex); | |
11045 | } | |
11046 | else if (subscript_type == FUV_SUBSCRIPT_WITHIN) | |
11047 | sv_insert(name, 0, 0, "within ", 7); | |
1d7c1841 | 11048 | |
bd81e77b NC |
11049 | return name; |
11050 | } | |
1d7c1841 | 11051 | |
1d7c1841 | 11052 | |
bd81e77b NC |
11053 | /* |
11054 | =for apidoc find_uninit_var | |
1d7c1841 | 11055 | |
bd81e77b NC |
11056 | Find the name of the undefined variable (if any) that caused the operator o |
11057 | to issue a "Use of uninitialized value" warning. | |
11058 | If match is true, only return a name if it's value matches uninit_sv. | |
11059 | So roughly speaking, if a unary operator (such as OP_COS) generates a | |
11060 | warning, then following the direct child of the op may yield an | |
11061 | OP_PADSV or OP_GV that gives the name of the undefined variable. On the | |
11062 | other hand, with OP_ADD there are two branches to follow, so we only print | |
11063 | the variable name if we get an exact match. | |
1d7c1841 | 11064 | |
bd81e77b | 11065 | The name is returned as a mortal SV. |
1d7c1841 | 11066 | |
bd81e77b NC |
11067 | Assumes that PL_op is the op that originally triggered the error, and that |
11068 | PL_comppad/PL_curpad points to the currently executing pad. | |
1d7c1841 | 11069 | |
bd81e77b NC |
11070 | =cut |
11071 | */ | |
1d7c1841 | 11072 | |
bd81e77b NC |
11073 | STATIC SV * |
11074 | S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match) | |
11075 | { | |
11076 | dVAR; | |
11077 | SV *sv; | |
11078 | AV *av; | |
11079 | GV *gv; | |
11080 | OP *o, *o2, *kid; | |
1d7c1841 | 11081 | |
bd81e77b NC |
11082 | if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef || |
11083 | uninit_sv == &PL_sv_placeholder))) | |
11084 | return Nullsv; | |
1d7c1841 | 11085 | |
bd81e77b | 11086 | switch (obase->op_type) { |
1d7c1841 | 11087 | |
bd81e77b NC |
11088 | case OP_RV2AV: |
11089 | case OP_RV2HV: | |
11090 | case OP_PADAV: | |
11091 | case OP_PADHV: | |
11092 | { | |
11093 | const bool pad = (obase->op_type == OP_PADAV || obase->op_type == OP_PADHV); | |
11094 | const bool hash = (obase->op_type == OP_PADHV || obase->op_type == OP_RV2HV); | |
11095 | I32 index = 0; | |
11096 | SV *keysv = Nullsv; | |
11097 | int subscript_type = FUV_SUBSCRIPT_WITHIN; | |
1d7c1841 | 11098 | |
bd81e77b NC |
11099 | if (pad) { /* @lex, %lex */ |
11100 | sv = PAD_SVl(obase->op_targ); | |
11101 | gv = Nullgv; | |
11102 | } | |
11103 | else { | |
11104 | if (cUNOPx(obase)->op_first->op_type == OP_GV) { | |
11105 | /* @global, %global */ | |
11106 | gv = cGVOPx_gv(cUNOPx(obase)->op_first); | |
11107 | if (!gv) | |
11108 | break; | |
11109 | sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv); | |
11110 | } | |
11111 | else /* @{expr}, %{expr} */ | |
11112 | return find_uninit_var(cUNOPx(obase)->op_first, | |
11113 | uninit_sv, match); | |
11114 | } | |
1d7c1841 | 11115 | |
bd81e77b NC |
11116 | /* attempt to find a match within the aggregate */ |
11117 | if (hash) { | |
11118 | keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
11119 | if (keysv) | |
11120 | subscript_type = FUV_SUBSCRIPT_HASH; | |
11121 | } | |
11122 | else { | |
11123 | index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
11124 | if (index >= 0) | |
11125 | subscript_type = FUV_SUBSCRIPT_ARRAY; | |
11126 | } | |
1d7c1841 | 11127 | |
bd81e77b NC |
11128 | if (match && subscript_type == FUV_SUBSCRIPT_WITHIN) |
11129 | break; | |
1d7c1841 | 11130 | |
bd81e77b NC |
11131 | return varname(gv, hash ? '%' : '@', obase->op_targ, |
11132 | keysv, index, subscript_type); | |
11133 | } | |
1d7c1841 | 11134 | |
bd81e77b NC |
11135 | case OP_PADSV: |
11136 | if (match && PAD_SVl(obase->op_targ) != uninit_sv) | |
11137 | break; | |
11138 | return varname(Nullgv, '$', obase->op_targ, | |
11139 | Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
1d7c1841 | 11140 | |
bd81e77b NC |
11141 | case OP_GVSV: |
11142 | gv = cGVOPx_gv(obase); | |
11143 | if (!gv || (match && GvSV(gv) != uninit_sv)) | |
11144 | break; | |
11145 | return varname(gv, '$', 0, Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
1d7c1841 | 11146 | |
bd81e77b NC |
11147 | case OP_AELEMFAST: |
11148 | if (obase->op_flags & OPf_SPECIAL) { /* lexical array */ | |
11149 | if (match) { | |
11150 | SV **svp; | |
11151 | av = (AV*)PAD_SV(obase->op_targ); | |
11152 | if (!av || SvRMAGICAL(av)) | |
11153 | break; | |
11154 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
11155 | if (!svp || *svp != uninit_sv) | |
11156 | break; | |
11157 | } | |
11158 | return varname(Nullgv, '$', obase->op_targ, | |
11159 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
11160 | } | |
11161 | else { | |
11162 | gv = cGVOPx_gv(obase); | |
11163 | if (!gv) | |
11164 | break; | |
11165 | if (match) { | |
11166 | SV **svp; | |
11167 | av = GvAV(gv); | |
11168 | if (!av || SvRMAGICAL(av)) | |
11169 | break; | |
11170 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
11171 | if (!svp || *svp != uninit_sv) | |
11172 | break; | |
11173 | } | |
11174 | return varname(gv, '$', 0, | |
11175 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
11176 | } | |
11177 | break; | |
1d7c1841 | 11178 | |
bd81e77b NC |
11179 | case OP_EXISTS: |
11180 | o = cUNOPx(obase)->op_first; | |
11181 | if (!o || o->op_type != OP_NULL || | |
11182 | ! (o->op_targ == OP_AELEM || o->op_targ == OP_HELEM)) | |
11183 | break; | |
11184 | return find_uninit_var(cBINOPo->op_last, uninit_sv, match); | |
a2efc822 | 11185 | |
bd81e77b NC |
11186 | case OP_AELEM: |
11187 | case OP_HELEM: | |
11188 | if (PL_op == obase) | |
11189 | /* $a[uninit_expr] or $h{uninit_expr} */ | |
11190 | return find_uninit_var(cBINOPx(obase)->op_last, uninit_sv, match); | |
081fc587 | 11191 | |
bd81e77b NC |
11192 | gv = Nullgv; |
11193 | o = cBINOPx(obase)->op_first; | |
11194 | kid = cBINOPx(obase)->op_last; | |
8cf8f3d1 | 11195 | |
bd81e77b NC |
11196 | /* get the av or hv, and optionally the gv */ |
11197 | sv = Nullsv; | |
11198 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) { | |
11199 | sv = PAD_SV(o->op_targ); | |
11200 | } | |
11201 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_RV2HV) | |
11202 | && cUNOPo->op_first->op_type == OP_GV) | |
11203 | { | |
11204 | gv = cGVOPx_gv(cUNOPo->op_first); | |
11205 | if (!gv) | |
11206 | break; | |
11207 | sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv); | |
11208 | } | |
11209 | if (!sv) | |
11210 | break; | |
11211 | ||
11212 | if (kid && kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) { | |
11213 | /* index is constant */ | |
11214 | if (match) { | |
11215 | if (SvMAGICAL(sv)) | |
11216 | break; | |
11217 | if (obase->op_type == OP_HELEM) { | |
11218 | HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0); | |
11219 | if (!he || HeVAL(he) != uninit_sv) | |
11220 | break; | |
11221 | } | |
11222 | else { | |
00b6aa41 | 11223 | SV * const * const svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE); |
bd81e77b NC |
11224 | if (!svp || *svp != uninit_sv) |
11225 | break; | |
11226 | } | |
11227 | } | |
11228 | if (obase->op_type == OP_HELEM) | |
11229 | return varname(gv, '%', o->op_targ, | |
11230 | cSVOPx_sv(kid), 0, FUV_SUBSCRIPT_HASH); | |
11231 | else | |
11232 | return varname(gv, '@', o->op_targ, Nullsv, | |
11233 | SvIV(cSVOPx_sv(kid)), FUV_SUBSCRIPT_ARRAY); | |
bd81e77b NC |
11234 | } |
11235 | else { | |
11236 | /* index is an expression; | |
11237 | * attempt to find a match within the aggregate */ | |
11238 | if (obase->op_type == OP_HELEM) { | |
11239 | SV * const keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
11240 | if (keysv) | |
11241 | return varname(gv, '%', o->op_targ, | |
11242 | keysv, 0, FUV_SUBSCRIPT_HASH); | |
11243 | } | |
11244 | else { | |
11245 | const I32 index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
11246 | if (index >= 0) | |
11247 | return varname(gv, '@', o->op_targ, | |
11248 | Nullsv, index, FUV_SUBSCRIPT_ARRAY); | |
11249 | } | |
11250 | if (match) | |
11251 | break; | |
11252 | return varname(gv, | |
11253 | (o->op_type == OP_PADAV || o->op_type == OP_RV2AV) | |
11254 | ? '@' : '%', | |
11255 | o->op_targ, Nullsv, 0, FUV_SUBSCRIPT_WITHIN); | |
f284b03f | 11256 | } |
a0739874 | 11257 | |
bd81e77b | 11258 | break; |
dc507217 | 11259 | |
bd81e77b NC |
11260 | case OP_AASSIGN: |
11261 | /* only examine RHS */ | |
11262 | return find_uninit_var(cBINOPx(obase)->op_first, uninit_sv, match); | |
6d26897e | 11263 | |
bd81e77b NC |
11264 | case OP_OPEN: |
11265 | o = cUNOPx(obase)->op_first; | |
11266 | if (o->op_type == OP_PUSHMARK) | |
11267 | o = o->op_sibling; | |
1d7c1841 | 11268 | |
bd81e77b NC |
11269 | if (!o->op_sibling) { |
11270 | /* one-arg version of open is highly magical */ | |
a0ae6670 | 11271 | |
bd81e77b NC |
11272 | if (o->op_type == OP_GV) { /* open FOO; */ |
11273 | gv = cGVOPx_gv(o); | |
11274 | if (match && GvSV(gv) != uninit_sv) | |
11275 | break; | |
11276 | return varname(gv, '$', 0, | |
11277 | Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
11278 | } | |
11279 | /* other possibilities not handled are: | |
11280 | * open $x; or open my $x; should return '${*$x}' | |
11281 | * open expr; should return '$'.expr ideally | |
11282 | */ | |
11283 | break; | |
11284 | } | |
11285 | goto do_op; | |
ccfc67b7 | 11286 | |
bd81e77b NC |
11287 | /* ops where $_ may be an implicit arg */ |
11288 | case OP_TRANS: | |
11289 | case OP_SUBST: | |
11290 | case OP_MATCH: | |
11291 | if ( !(obase->op_flags & OPf_STACKED)) { | |
11292 | if (uninit_sv == ((obase->op_private & OPpTARGET_MY) | |
11293 | ? PAD_SVl(obase->op_targ) | |
11294 | : DEFSV)) | |
11295 | { | |
11296 | sv = sv_newmortal(); | |
11297 | sv_setpvn(sv, "$_", 2); | |
11298 | return sv; | |
11299 | } | |
11300 | } | |
11301 | goto do_op; | |
9f4817db | 11302 | |
bd81e77b NC |
11303 | case OP_PRTF: |
11304 | case OP_PRINT: | |
11305 | /* skip filehandle as it can't produce 'undef' warning */ | |
11306 | o = cUNOPx(obase)->op_first; | |
11307 | if ((obase->op_flags & OPf_STACKED) && o->op_type == OP_PUSHMARK) | |
11308 | o = o->op_sibling->op_sibling; | |
11309 | goto do_op2; | |
9f4817db | 11310 | |
9f4817db | 11311 | |
bd81e77b NC |
11312 | case OP_RV2SV: |
11313 | case OP_CUSTOM: | |
11314 | case OP_ENTERSUB: | |
11315 | match = 1; /* XS or custom code could trigger random warnings */ | |
11316 | goto do_op; | |
9f4817db | 11317 | |
bd81e77b NC |
11318 | case OP_SCHOMP: |
11319 | case OP_CHOMP: | |
11320 | if (SvROK(PL_rs) && uninit_sv == SvRV(PL_rs)) | |
11321 | return sv_2mortal(newSVpvn("${$/}", 5)); | |
11322 | /* FALL THROUGH */ | |
5d170f3a | 11323 | |
bd81e77b NC |
11324 | default: |
11325 | do_op: | |
11326 | if (!(obase->op_flags & OPf_KIDS)) | |
11327 | break; | |
11328 | o = cUNOPx(obase)->op_first; | |
11329 | ||
11330 | do_op2: | |
11331 | if (!o) | |
11332 | break; | |
f9893866 | 11333 | |
bd81e77b NC |
11334 | /* if all except one arg are constant, or have no side-effects, |
11335 | * or are optimized away, then it's unambiguous */ | |
11336 | o2 = Nullop; | |
11337 | for (kid=o; kid; kid = kid->op_sibling) { | |
11338 | if (kid && | |
11339 | ( (kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) | |
11340 | || (kid->op_type == OP_NULL && ! (kid->op_flags & OPf_KIDS)) | |
11341 | || (kid->op_type == OP_PUSHMARK) | |
11342 | ) | |
11343 | ) | |
11344 | continue; | |
11345 | if (o2) { /* more than one found */ | |
11346 | o2 = Nullop; | |
11347 | break; | |
11348 | } | |
11349 | o2 = kid; | |
11350 | } | |
11351 | if (o2) | |
11352 | return find_uninit_var(o2, uninit_sv, match); | |
7a5fa8a2 | 11353 | |
bd81e77b NC |
11354 | /* scan all args */ |
11355 | while (o) { | |
11356 | sv = find_uninit_var(o, uninit_sv, 1); | |
11357 | if (sv) | |
11358 | return sv; | |
11359 | o = o->op_sibling; | |
d0063567 | 11360 | } |
bd81e77b | 11361 | break; |
f9893866 | 11362 | } |
bd81e77b | 11363 | return Nullsv; |
9f4817db JH |
11364 | } |
11365 | ||
220e2d4e | 11366 | |
bd81e77b NC |
11367 | /* |
11368 | =for apidoc report_uninit | |
68795e93 | 11369 | |
bd81e77b | 11370 | Print appropriate "Use of uninitialized variable" warning |
220e2d4e | 11371 | |
bd81e77b NC |
11372 | =cut |
11373 | */ | |
220e2d4e | 11374 | |
bd81e77b NC |
11375 | void |
11376 | Perl_report_uninit(pTHX_ SV* uninit_sv) | |
220e2d4e | 11377 | { |
bd81e77b NC |
11378 | if (PL_op) { |
11379 | SV* varname = Nullsv; | |
11380 | if (uninit_sv) { | |
11381 | varname = find_uninit_var(PL_op, uninit_sv,0); | |
11382 | if (varname) | |
11383 | sv_insert(varname, 0, 0, " ", 1); | |
11384 | } | |
11385 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, | |
11386 | varname ? SvPV_nolen_const(varname) : "", | |
11387 | " in ", OP_DESC(PL_op)); | |
220e2d4e | 11388 | } |
a73e8557 | 11389 | else |
bd81e77b NC |
11390 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
11391 | "", "", ""); | |
220e2d4e | 11392 | } |
f9893866 | 11393 | |
241d1a3b NC |
11394 | /* |
11395 | * Local variables: | |
11396 | * c-indentation-style: bsd | |
11397 | * c-basic-offset: 4 | |
11398 | * indent-tabs-mode: t | |
11399 | * End: | |
11400 | * | |
37442d52 RGS |
11401 | * ex: set ts=8 sts=4 sw=4 noet: |
11402 | */ |