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, |
7272f7c1 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e | 9 | * "I wonder what the Entish is for 'yes' and 'no'," he thought. |
645c22ef DM |
10 | * |
11 | * | |
5e045b90 AMS |
12 | * This file contains the code that creates, manipulates and destroys |
13 | * scalar values (SVs). The other types (AV, HV, GV, etc.) reuse the | |
14 | * structure of an SV, so their creation and destruction is handled | |
15 | * here; higher-level functions are in av.c, hv.c, and so on. Opcode | |
16 | * level functions (eg. substr, split, join) for each of the types are | |
17 | * in the pp*.c files. | |
79072805 LW |
18 | */ |
19 | ||
20 | #include "EXTERN.h" | |
864dbfa3 | 21 | #define PERL_IN_SV_C |
79072805 | 22 | #include "perl.h" |
d2f185dc | 23 | #include "regcomp.h" |
79072805 | 24 | |
51371543 | 25 | #define FCALL *f |
2c5424a7 | 26 | |
2f8ed50e OS |
27 | #ifdef __Lynx__ |
28 | /* Missing proto on LynxOS */ | |
29 | char *gconvert(double, int, int, char *); | |
30 | #endif | |
31 | ||
e23c8137 | 32 | #ifdef PERL_UTF8_CACHE_ASSERT |
ab455f60 | 33 | /* if adding more checks watch out for the following tests: |
e23c8137 JH |
34 | * t/op/index.t t/op/length.t t/op/pat.t t/op/substr.t |
35 | * lib/utf8.t lib/Unicode/Collate/t/index.t | |
36 | * --jhi | |
37 | */ | |
6f207bd3 | 38 | # define ASSERT_UTF8_CACHE(cache) \ |
ab455f60 NC |
39 | STMT_START { if (cache) { assert((cache)[0] <= (cache)[1]); \ |
40 | assert((cache)[2] <= (cache)[3]); \ | |
41 | assert((cache)[3] <= (cache)[1]);} \ | |
42 | } STMT_END | |
e23c8137 | 43 | #else |
6f207bd3 | 44 | # define ASSERT_UTF8_CACHE(cache) NOOP |
e23c8137 JH |
45 | #endif |
46 | ||
f8c7b90f | 47 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 48 | #define SV_COW_NEXT_SV(sv) INT2PTR(SV *,SvUVX(sv)) |
607fa7f2 | 49 | #define SV_COW_NEXT_SV_SET(current,next) SvUV_set(current, PTR2UV(next)) |
b5ccf5f2 | 50 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
765f542d | 51 | on-write. */ |
765f542d | 52 | #endif |
645c22ef DM |
53 | |
54 | /* ============================================================================ | |
55 | ||
56 | =head1 Allocation and deallocation of SVs. | |
57 | ||
d2a0f284 JC |
58 | An SV (or AV, HV, etc.) is allocated in two parts: the head (struct |
59 | sv, av, hv...) contains type and reference count information, and for | |
60 | many types, a pointer to the body (struct xrv, xpv, xpviv...), which | |
61 | contains fields specific to each type. Some types store all they need | |
62 | in the head, so don't have a body. | |
63 | ||
64 | In all but the most memory-paranoid configuations (ex: PURIFY), heads | |
65 | and bodies are allocated out of arenas, which by default are | |
66 | approximately 4K chunks of memory parcelled up into N heads or bodies. | |
93e68bfb JC |
67 | Sv-bodies are allocated by their sv-type, guaranteeing size |
68 | consistency needed to allocate safely from arrays. | |
69 | ||
d2a0f284 JC |
70 | For SV-heads, the first slot in each arena is reserved, and holds a |
71 | link to the next arena, some flags, and a note of the number of slots. | |
72 | Snaked through each arena chain is a linked list of free items; when | |
73 | this becomes empty, an extra arena is allocated and divided up into N | |
74 | items which are threaded into the free list. | |
75 | ||
76 | SV-bodies are similar, but they use arena-sets by default, which | |
77 | separate the link and info from the arena itself, and reclaim the 1st | |
78 | slot in the arena. SV-bodies are further described later. | |
645c22ef DM |
79 | |
80 | The following global variables are associated with arenas: | |
81 | ||
82 | PL_sv_arenaroot pointer to list of SV arenas | |
83 | PL_sv_root pointer to list of free SV structures | |
84 | ||
d2a0f284 JC |
85 | PL_body_arenas head of linked-list of body arenas |
86 | PL_body_roots[] array of pointers to list of free bodies of svtype | |
87 | arrays are indexed by the svtype needed | |
93e68bfb | 88 | |
d2a0f284 JC |
89 | A few special SV heads are not allocated from an arena, but are |
90 | instead directly created in the interpreter structure, eg PL_sv_undef. | |
93e68bfb JC |
91 | The size of arenas can be changed from the default by setting |
92 | PERL_ARENA_SIZE appropriately at compile time. | |
645c22ef DM |
93 | |
94 | The SV arena serves the secondary purpose of allowing still-live SVs | |
95 | to be located and destroyed during final cleanup. | |
96 | ||
97 | At the lowest level, the macros new_SV() and del_SV() grab and free | |
98 | an SV head. (If debugging with -DD, del_SV() calls the function S_del_sv() | |
99 | to return the SV to the free list with error checking.) new_SV() calls | |
100 | more_sv() / sv_add_arena() to add an extra arena if the free list is empty. | |
101 | SVs in the free list have their SvTYPE field set to all ones. | |
102 | ||
ff276b08 | 103 | At the time of very final cleanup, sv_free_arenas() is called from |
645c22ef | 104 | perl_destruct() to physically free all the arenas allocated since the |
6a93a7e5 | 105 | start of the interpreter. |
645c22ef DM |
106 | |
107 | Manipulation of any of the PL_*root pointers is protected by enclosing | |
108 | LOCK_SV_MUTEX; ... UNLOCK_SV_MUTEX calls which should Do the Right Thing | |
109 | if threads are enabled. | |
110 | ||
111 | The function visit() scans the SV arenas list, and calls a specified | |
112 | function for each SV it finds which is still live - ie which has an SvTYPE | |
113 | other than all 1's, and a non-zero SvREFCNT. visit() is used by the | |
114 | following functions (specified as [function that calls visit()] / [function | |
115 | called by visit() for each SV]): | |
116 | ||
117 | sv_report_used() / do_report_used() | |
f2524eef | 118 | dump all remaining SVs (debugging aid) |
645c22ef DM |
119 | |
120 | sv_clean_objs() / do_clean_objs(),do_clean_named_objs() | |
121 | Attempt to free all objects pointed to by RVs, | |
122 | and, unless DISABLE_DESTRUCTOR_KLUDGE is defined, | |
123 | try to do the same for all objects indirectly | |
124 | referenced by typeglobs too. Called once from | |
125 | perl_destruct(), prior to calling sv_clean_all() | |
126 | below. | |
127 | ||
128 | sv_clean_all() / do_clean_all() | |
129 | SvREFCNT_dec(sv) each remaining SV, possibly | |
130 | triggering an sv_free(). It also sets the | |
131 | SVf_BREAK flag on the SV to indicate that the | |
132 | refcnt has been artificially lowered, and thus | |
133 | stopping sv_free() from giving spurious warnings | |
134 | about SVs which unexpectedly have a refcnt | |
135 | of zero. called repeatedly from perl_destruct() | |
136 | until there are no SVs left. | |
137 | ||
93e68bfb | 138 | =head2 Arena allocator API Summary |
645c22ef DM |
139 | |
140 | Private API to rest of sv.c | |
141 | ||
142 | new_SV(), del_SV(), | |
143 | ||
144 | new_XIV(), del_XIV(), | |
145 | new_XNV(), del_XNV(), | |
146 | etc | |
147 | ||
148 | Public API: | |
149 | ||
8cf8f3d1 | 150 | sv_report_used(), sv_clean_objs(), sv_clean_all(), sv_free_arenas() |
645c22ef | 151 | |
645c22ef DM |
152 | =cut |
153 | ||
154 | ============================================================================ */ | |
155 | ||
4561caa4 CS |
156 | /* |
157 | * "A time to plant, and a time to uproot what was planted..." | |
158 | */ | |
159 | ||
77354fb4 NC |
160 | /* |
161 | * nice_chunk and nice_chunk size need to be set | |
162 | * and queried under the protection of sv_mutex | |
163 | */ | |
164 | void | |
165 | Perl_offer_nice_chunk(pTHX_ void *chunk, U32 chunk_size) | |
166 | { | |
97aff369 | 167 | dVAR; |
77354fb4 NC |
168 | void *new_chunk; |
169 | U32 new_chunk_size; | |
170 | LOCK_SV_MUTEX; | |
171 | new_chunk = (void *)(chunk); | |
172 | new_chunk_size = (chunk_size); | |
173 | if (new_chunk_size > PL_nice_chunk_size) { | |
174 | Safefree(PL_nice_chunk); | |
175 | PL_nice_chunk = (char *) new_chunk; | |
176 | PL_nice_chunk_size = new_chunk_size; | |
177 | } else { | |
178 | Safefree(chunk); | |
179 | } | |
180 | UNLOCK_SV_MUTEX; | |
181 | } | |
cac9b346 | 182 | |
fd0854ff | 183 | #ifdef DEBUG_LEAKING_SCALARS |
22162ca8 | 184 | # define FREE_SV_DEBUG_FILE(sv) Safefree((sv)->sv_debug_file) |
fd0854ff DM |
185 | #else |
186 | # define FREE_SV_DEBUG_FILE(sv) | |
187 | #endif | |
188 | ||
48614a46 NC |
189 | #ifdef PERL_POISON |
190 | # define SvARENA_CHAIN(sv) ((sv)->sv_u.svu_rv) | |
191 | /* Whilst I'd love to do this, it seems that things like to check on | |
192 | unreferenced scalars | |
7e337ee0 | 193 | # define POSION_SV_HEAD(sv) PoisonNew(sv, 1, struct STRUCT_SV) |
48614a46 | 194 | */ |
7e337ee0 JH |
195 | # define POSION_SV_HEAD(sv) PoisonNew(&SvANY(sv), 1, void *), \ |
196 | PoisonNew(&SvREFCNT(sv), 1, U32) | |
48614a46 NC |
197 | #else |
198 | # define SvARENA_CHAIN(sv) SvANY(sv) | |
199 | # define POSION_SV_HEAD(sv) | |
200 | #endif | |
201 | ||
053fc874 GS |
202 | #define plant_SV(p) \ |
203 | STMT_START { \ | |
fd0854ff | 204 | FREE_SV_DEBUG_FILE(p); \ |
48614a46 NC |
205 | POSION_SV_HEAD(p); \ |
206 | SvARENA_CHAIN(p) = (void *)PL_sv_root; \ | |
053fc874 GS |
207 | SvFLAGS(p) = SVTYPEMASK; \ |
208 | PL_sv_root = (p); \ | |
209 | --PL_sv_count; \ | |
210 | } STMT_END | |
a0d0e21e | 211 | |
fba3b22e | 212 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
213 | #define uproot_SV(p) \ |
214 | STMT_START { \ | |
215 | (p) = PL_sv_root; \ | |
bb7bbd9c | 216 | PL_sv_root = (SV*)SvARENA_CHAIN(p); \ |
053fc874 GS |
217 | ++PL_sv_count; \ |
218 | } STMT_END | |
219 | ||
645c22ef | 220 | |
cac9b346 NC |
221 | /* make some more SVs by adding another arena */ |
222 | ||
223 | /* sv_mutex must be held while calling more_sv() */ | |
224 | STATIC SV* | |
225 | S_more_sv(pTHX) | |
226 | { | |
97aff369 | 227 | dVAR; |
cac9b346 NC |
228 | SV* sv; |
229 | ||
230 | if (PL_nice_chunk) { | |
231 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
bd61b366 | 232 | PL_nice_chunk = NULL; |
cac9b346 NC |
233 | PL_nice_chunk_size = 0; |
234 | } | |
235 | else { | |
236 | char *chunk; /* must use New here to match call to */ | |
d2a0f284 | 237 | Newx(chunk,PERL_ARENA_SIZE,char); /* Safefree() in sv_free_arenas() */ |
2e7ed132 | 238 | sv_add_arena(chunk, PERL_ARENA_SIZE, 0); |
cac9b346 NC |
239 | } |
240 | uproot_SV(sv); | |
241 | return sv; | |
242 | } | |
243 | ||
645c22ef DM |
244 | /* new_SV(): return a new, empty SV head */ |
245 | ||
eba0f806 DM |
246 | #ifdef DEBUG_LEAKING_SCALARS |
247 | /* provide a real function for a debugger to play with */ | |
248 | STATIC SV* | |
249 | S_new_SV(pTHX) | |
250 | { | |
251 | SV* sv; | |
252 | ||
253 | LOCK_SV_MUTEX; | |
254 | if (PL_sv_root) | |
255 | uproot_SV(sv); | |
256 | else | |
cac9b346 | 257 | sv = S_more_sv(aTHX); |
eba0f806 DM |
258 | UNLOCK_SV_MUTEX; |
259 | SvANY(sv) = 0; | |
260 | SvREFCNT(sv) = 1; | |
261 | SvFLAGS(sv) = 0; | |
fd0854ff DM |
262 | sv->sv_debug_optype = PL_op ? PL_op->op_type : 0; |
263 | sv->sv_debug_line = (U16) ((PL_copline == NOLINE) ? | |
264 | (PL_curcop ? CopLINE(PL_curcop) : 0) : PL_copline); | |
265 | sv->sv_debug_inpad = 0; | |
266 | sv->sv_debug_cloned = 0; | |
fd0854ff | 267 | sv->sv_debug_file = PL_curcop ? savepv(CopFILE(PL_curcop)): NULL; |
fd0854ff | 268 | |
eba0f806 DM |
269 | return sv; |
270 | } | |
271 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
272 | ||
273 | #else | |
274 | # define new_SV(p) \ | |
053fc874 GS |
275 | STMT_START { \ |
276 | LOCK_SV_MUTEX; \ | |
277 | if (PL_sv_root) \ | |
278 | uproot_SV(p); \ | |
279 | else \ | |
cac9b346 | 280 | (p) = S_more_sv(aTHX); \ |
053fc874 GS |
281 | UNLOCK_SV_MUTEX; \ |
282 | SvANY(p) = 0; \ | |
283 | SvREFCNT(p) = 1; \ | |
284 | SvFLAGS(p) = 0; \ | |
285 | } STMT_END | |
eba0f806 | 286 | #endif |
463ee0b2 | 287 | |
645c22ef DM |
288 | |
289 | /* del_SV(): return an empty SV head to the free list */ | |
290 | ||
a0d0e21e | 291 | #ifdef DEBUGGING |
4561caa4 | 292 | |
053fc874 GS |
293 | #define del_SV(p) \ |
294 | STMT_START { \ | |
295 | LOCK_SV_MUTEX; \ | |
aea4f609 | 296 | if (DEBUG_D_TEST) \ |
053fc874 GS |
297 | del_sv(p); \ |
298 | else \ | |
299 | plant_SV(p); \ | |
300 | UNLOCK_SV_MUTEX; \ | |
301 | } STMT_END | |
a0d0e21e | 302 | |
76e3520e | 303 | STATIC void |
cea2e8a9 | 304 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 305 | { |
97aff369 | 306 | dVAR; |
aea4f609 | 307 | if (DEBUG_D_TEST) { |
4633a7c4 | 308 | SV* sva; |
a3b680e6 | 309 | bool ok = 0; |
3280af22 | 310 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
53c1dcc0 AL |
311 | const SV * const sv = sva + 1; |
312 | const SV * const svend = &sva[SvREFCNT(sva)]; | |
c0ff570e | 313 | if (p >= sv && p < svend) { |
a0d0e21e | 314 | ok = 1; |
c0ff570e NC |
315 | break; |
316 | } | |
a0d0e21e LW |
317 | } |
318 | if (!ok) { | |
0453d815 | 319 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 320 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
321 | "Attempt to free non-arena SV: 0x%"UVxf |
322 | pTHX__FORMAT, PTR2UV(p) pTHX__VALUE); | |
a0d0e21e LW |
323 | return; |
324 | } | |
325 | } | |
4561caa4 | 326 | plant_SV(p); |
463ee0b2 | 327 | } |
a0d0e21e | 328 | |
4561caa4 CS |
329 | #else /* ! DEBUGGING */ |
330 | ||
331 | #define del_SV(p) plant_SV(p) | |
332 | ||
333 | #endif /* DEBUGGING */ | |
463ee0b2 | 334 | |
645c22ef DM |
335 | |
336 | /* | |
ccfc67b7 JH |
337 | =head1 SV Manipulation Functions |
338 | ||
645c22ef DM |
339 | =for apidoc sv_add_arena |
340 | ||
341 | Given a chunk of memory, link it to the head of the list of arenas, | |
342 | and split it into a list of free SVs. | |
343 | ||
344 | =cut | |
345 | */ | |
346 | ||
4633a7c4 | 347 | void |
864dbfa3 | 348 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 349 | { |
97aff369 | 350 | dVAR; |
0bd48802 | 351 | SV* const sva = (SV*)ptr; |
463ee0b2 LW |
352 | register SV* sv; |
353 | register SV* svend; | |
4633a7c4 LW |
354 | |
355 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 356 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
357 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
358 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
359 | ||
3280af22 NIS |
360 | PL_sv_arenaroot = sva; |
361 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
362 | |
363 | svend = &sva[SvREFCNT(sva) - 1]; | |
364 | sv = sva + 1; | |
463ee0b2 | 365 | while (sv < svend) { |
48614a46 | 366 | SvARENA_CHAIN(sv) = (void *)(SV*)(sv + 1); |
03e36789 | 367 | #ifdef DEBUGGING |
978b032e | 368 | SvREFCNT(sv) = 0; |
03e36789 NC |
369 | #endif |
370 | /* Must always set typemask because it's awlays checked in on cleanup | |
371 | when the arenas are walked looking for objects. */ | |
8990e307 | 372 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
373 | sv++; |
374 | } | |
48614a46 | 375 | SvARENA_CHAIN(sv) = 0; |
03e36789 NC |
376 | #ifdef DEBUGGING |
377 | SvREFCNT(sv) = 0; | |
378 | #endif | |
4633a7c4 LW |
379 | SvFLAGS(sv) = SVTYPEMASK; |
380 | } | |
381 | ||
055972dc DM |
382 | /* visit(): call the named function for each non-free SV in the arenas |
383 | * whose flags field matches the flags/mask args. */ | |
645c22ef | 384 | |
5226ed68 | 385 | STATIC I32 |
055972dc | 386 | S_visit(pTHX_ SVFUNC_t f, U32 flags, U32 mask) |
8990e307 | 387 | { |
97aff369 | 388 | dVAR; |
4633a7c4 | 389 | SV* sva; |
5226ed68 | 390 | I32 visited = 0; |
8990e307 | 391 | |
3280af22 | 392 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
53c1dcc0 | 393 | register const SV * const svend = &sva[SvREFCNT(sva)]; |
a3b680e6 | 394 | register SV* sv; |
4561caa4 | 395 | for (sv = sva + 1; sv < svend; ++sv) { |
055972dc DM |
396 | if (SvTYPE(sv) != SVTYPEMASK |
397 | && (sv->sv_flags & mask) == flags | |
398 | && SvREFCNT(sv)) | |
399 | { | |
acfe0abc | 400 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
401 | ++visited; |
402 | } | |
8990e307 LW |
403 | } |
404 | } | |
5226ed68 | 405 | return visited; |
8990e307 LW |
406 | } |
407 | ||
758a08c3 JH |
408 | #ifdef DEBUGGING |
409 | ||
645c22ef DM |
410 | /* called by sv_report_used() for each live SV */ |
411 | ||
412 | static void | |
acfe0abc | 413 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
414 | { |
415 | if (SvTYPE(sv) != SVTYPEMASK) { | |
416 | PerlIO_printf(Perl_debug_log, "****\n"); | |
417 | sv_dump(sv); | |
418 | } | |
419 | } | |
758a08c3 | 420 | #endif |
645c22ef DM |
421 | |
422 | /* | |
423 | =for apidoc sv_report_used | |
424 | ||
425 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
426 | ||
427 | =cut | |
428 | */ | |
429 | ||
8990e307 | 430 | void |
864dbfa3 | 431 | Perl_sv_report_used(pTHX) |
4561caa4 | 432 | { |
ff270d3a | 433 | #ifdef DEBUGGING |
055972dc | 434 | visit(do_report_used, 0, 0); |
96a5add6 AL |
435 | #else |
436 | PERL_UNUSED_CONTEXT; | |
ff270d3a | 437 | #endif |
4561caa4 CS |
438 | } |
439 | ||
645c22ef DM |
440 | /* called by sv_clean_objs() for each live SV */ |
441 | ||
442 | static void | |
e15faf7d | 443 | do_clean_objs(pTHX_ SV *ref) |
645c22ef | 444 | { |
97aff369 | 445 | dVAR; |
ea724faa NC |
446 | assert (SvROK(ref)); |
447 | { | |
823a54a3 AL |
448 | SV * const target = SvRV(ref); |
449 | if (SvOBJECT(target)) { | |
450 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(ref))); | |
451 | if (SvWEAKREF(ref)) { | |
452 | sv_del_backref(target, ref); | |
453 | SvWEAKREF_off(ref); | |
454 | SvRV_set(ref, NULL); | |
455 | } else { | |
456 | SvROK_off(ref); | |
457 | SvRV_set(ref, NULL); | |
458 | SvREFCNT_dec(target); | |
459 | } | |
645c22ef DM |
460 | } |
461 | } | |
462 | ||
463 | /* XXX Might want to check arrays, etc. */ | |
464 | } | |
465 | ||
466 | /* called by sv_clean_objs() for each live SV */ | |
467 | ||
468 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
469 | static void | |
acfe0abc | 470 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef | 471 | { |
97aff369 | 472 | dVAR; |
ea724faa | 473 | assert(SvTYPE(sv) == SVt_PVGV); |
d011219a NC |
474 | assert(isGV_with_GP(sv)); |
475 | if (GvGP(sv)) { | |
c69033f2 NC |
476 | if (( |
477 | #ifdef PERL_DONT_CREATE_GVSV | |
478 | GvSV(sv) && | |
479 | #endif | |
480 | SvOBJECT(GvSV(sv))) || | |
645c22ef DM |
481 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || |
482 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
483 | (GvIO(sv) && SvOBJECT(GvIO(sv))) || | |
484 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) | |
485 | { | |
486 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
ec5f3c78 | 487 | SvFLAGS(sv) |= SVf_BREAK; |
645c22ef DM |
488 | SvREFCNT_dec(sv); |
489 | } | |
490 | } | |
491 | } | |
492 | #endif | |
493 | ||
494 | /* | |
495 | =for apidoc sv_clean_objs | |
496 | ||
497 | Attempt to destroy all objects not yet freed | |
498 | ||
499 | =cut | |
500 | */ | |
501 | ||
4561caa4 | 502 | void |
864dbfa3 | 503 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 504 | { |
97aff369 | 505 | dVAR; |
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 */ |
d011219a | 510 | visit(do_clean_named_objs, SVt_PVGV|SVpgv_GP, SVTYPEMASK|SVp_POK|SVpgv_GP); |
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 | 519 | { |
97aff369 | 520 | dVAR; |
645c22ef DM |
521 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); |
522 | SvFLAGS(sv) |= SVf_BREAK; | |
0e705b3b | 523 | if (PL_comppad == (AV*)sv) { |
7d49f689 | 524 | PL_comppad = NULL; |
4608196e | 525 | PL_curpad = NULL; |
0e705b3b | 526 | } |
645c22ef DM |
527 | SvREFCNT_dec(sv); |
528 | } | |
529 | ||
530 | /* | |
531 | =for apidoc sv_clean_all | |
532 | ||
533 | Decrement the refcnt of each remaining SV, possibly triggering a | |
534 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 535 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
536 | |
537 | =cut | |
538 | */ | |
539 | ||
5226ed68 | 540 | I32 |
864dbfa3 | 541 | Perl_sv_clean_all(pTHX) |
8990e307 | 542 | { |
97aff369 | 543 | dVAR; |
5226ed68 | 544 | I32 cleaned; |
3280af22 | 545 | PL_in_clean_all = TRUE; |
055972dc | 546 | cleaned = visit(do_clean_all, 0,0); |
3280af22 | 547 | PL_in_clean_all = FALSE; |
5226ed68 | 548 | return cleaned; |
8990e307 | 549 | } |
463ee0b2 | 550 | |
5e258f8c JC |
551 | /* |
552 | ARENASETS: a meta-arena implementation which separates arena-info | |
553 | into struct arena_set, which contains an array of struct | |
554 | arena_descs, each holding info for a single arena. By separating | |
555 | the meta-info from the arena, we recover the 1st slot, formerly | |
556 | borrowed for list management. The arena_set is about the size of an | |
39244528 | 557 | arena, avoiding the needless malloc overhead of a naive linked-list. |
5e258f8c JC |
558 | |
559 | The cost is 1 arena-set malloc per ~320 arena-mallocs, + the unused | |
560 | memory in the last arena-set (1/2 on average). In trade, we get | |
561 | back the 1st slot in each arena (ie 1.7% of a CV-arena, less for | |
d2a0f284 JC |
562 | smaller types). The recovery of the wasted space allows use of |
563 | small arenas for large, rare body types, | |
5e258f8c | 564 | */ |
5e258f8c | 565 | struct arena_desc { |
398c677b NC |
566 | char *arena; /* the raw storage, allocated aligned */ |
567 | size_t size; /* its size ~4k typ */ | |
0a848332 | 568 | U32 misc; /* type, and in future other things. */ |
5e258f8c JC |
569 | }; |
570 | ||
e6148039 NC |
571 | struct arena_set; |
572 | ||
573 | /* Get the maximum number of elements in set[] such that struct arena_set | |
574 | will fit within PERL_ARENA_SIZE, which is probabably just under 4K, and | |
575 | therefore likely to be 1 aligned memory page. */ | |
576 | ||
577 | #define ARENAS_PER_SET ((PERL_ARENA_SIZE - sizeof(struct arena_set*) \ | |
578 | - 2 * sizeof(int)) / sizeof (struct arena_desc)) | |
5e258f8c JC |
579 | |
580 | struct arena_set { | |
581 | struct arena_set* next; | |
0a848332 NC |
582 | unsigned int set_size; /* ie ARENAS_PER_SET */ |
583 | unsigned int curr; /* index of next available arena-desc */ | |
5e258f8c JC |
584 | struct arena_desc set[ARENAS_PER_SET]; |
585 | }; | |
586 | ||
645c22ef DM |
587 | /* |
588 | =for apidoc sv_free_arenas | |
589 | ||
590 | Deallocate the memory used by all arenas. Note that all the individual SV | |
591 | heads and bodies within the arenas must already have been freed. | |
592 | ||
593 | =cut | |
594 | */ | |
4633a7c4 | 595 | void |
864dbfa3 | 596 | Perl_sv_free_arenas(pTHX) |
4633a7c4 | 597 | { |
97aff369 | 598 | dVAR; |
4633a7c4 LW |
599 | SV* sva; |
600 | SV* svanext; | |
0a848332 | 601 | unsigned int i; |
4633a7c4 LW |
602 | |
603 | /* Free arenas here, but be careful about fake ones. (We assume | |
604 | contiguity of the fake ones with the corresponding real ones.) */ | |
605 | ||
3280af22 | 606 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
607 | svanext = (SV*) SvANY(sva); |
608 | while (svanext && SvFAKE(svanext)) | |
609 | svanext = (SV*) SvANY(svanext); | |
610 | ||
611 | if (!SvFAKE(sva)) | |
1df70142 | 612 | Safefree(sva); |
4633a7c4 | 613 | } |
93e68bfb | 614 | |
5e258f8c | 615 | { |
0a848332 NC |
616 | struct arena_set *aroot = (struct arena_set*) PL_body_arenas; |
617 | ||
618 | while (aroot) { | |
619 | struct arena_set *current = aroot; | |
620 | i = aroot->curr; | |
621 | while (i--) { | |
5e258f8c JC |
622 | assert(aroot->set[i].arena); |
623 | Safefree(aroot->set[i].arena); | |
624 | } | |
0a848332 NC |
625 | aroot = aroot->next; |
626 | Safefree(current); | |
5e258f8c JC |
627 | } |
628 | } | |
dc8220bf | 629 | PL_body_arenas = 0; |
fdda85ca | 630 | |
0a848332 NC |
631 | i = PERL_ARENA_ROOTS_SIZE; |
632 | while (i--) | |
93e68bfb | 633 | PL_body_roots[i] = 0; |
93e68bfb | 634 | |
43c5f42d | 635 | Safefree(PL_nice_chunk); |
bd61b366 | 636 | PL_nice_chunk = NULL; |
3280af22 NIS |
637 | PL_nice_chunk_size = 0; |
638 | PL_sv_arenaroot = 0; | |
639 | PL_sv_root = 0; | |
4633a7c4 LW |
640 | } |
641 | ||
bd81e77b NC |
642 | /* |
643 | Here are mid-level routines that manage the allocation of bodies out | |
644 | of the various arenas. There are 5 kinds of arenas: | |
29489e7c | 645 | |
bd81e77b NC |
646 | 1. SV-head arenas, which are discussed and handled above |
647 | 2. regular body arenas | |
648 | 3. arenas for reduced-size bodies | |
649 | 4. Hash-Entry arenas | |
650 | 5. pte arenas (thread related) | |
29489e7c | 651 | |
bd81e77b NC |
652 | Arena types 2 & 3 are chained by body-type off an array of |
653 | arena-root pointers, which is indexed by svtype. Some of the | |
654 | larger/less used body types are malloced singly, since a large | |
655 | unused block of them is wasteful. Also, several svtypes dont have | |
656 | bodies; the data fits into the sv-head itself. The arena-root | |
657 | pointer thus has a few unused root-pointers (which may be hijacked | |
658 | later for arena types 4,5) | |
29489e7c | 659 | |
bd81e77b NC |
660 | 3 differs from 2 as an optimization; some body types have several |
661 | unused fields in the front of the structure (which are kept in-place | |
662 | for consistency). These bodies can be allocated in smaller chunks, | |
663 | because the leading fields arent accessed. Pointers to such bodies | |
664 | are decremented to point at the unused 'ghost' memory, knowing that | |
665 | the pointers are used with offsets to the real memory. | |
29489e7c | 666 | |
bd81e77b NC |
667 | HE, HEK arenas are managed separately, with separate code, but may |
668 | be merge-able later.. | |
669 | ||
670 | PTE arenas are not sv-bodies, but they share these mid-level | |
671 | mechanics, so are considered here. The new mid-level mechanics rely | |
672 | on the sv_type of the body being allocated, so we just reserve one | |
673 | of the unused body-slots for PTEs, then use it in those (2) PTE | |
674 | contexts below (line ~10k) | |
675 | */ | |
676 | ||
bd26d9a3 | 677 | /* get_arena(size): this creates custom-sized arenas |
5e258f8c JC |
678 | TBD: export properly for hv.c: S_more_he(). |
679 | */ | |
680 | void* | |
0a848332 | 681 | Perl_get_arena(pTHX_ size_t arena_size, U32 misc) |
5e258f8c | 682 | { |
7a89be66 | 683 | dVAR; |
5e258f8c | 684 | struct arena_desc* adesc; |
39244528 | 685 | struct arena_set *aroot = (struct arena_set*) PL_body_arenas; |
0a848332 | 686 | unsigned int curr; |
5e258f8c | 687 | |
476a1e16 JC |
688 | /* shouldnt need this |
689 | if (!arena_size) arena_size = PERL_ARENA_SIZE; | |
690 | */ | |
5e258f8c JC |
691 | |
692 | /* may need new arena-set to hold new arena */ | |
39244528 NC |
693 | if (!aroot || aroot->curr >= aroot->set_size) { |
694 | struct arena_set *newroot; | |
5e258f8c JC |
695 | Newxz(newroot, 1, struct arena_set); |
696 | newroot->set_size = ARENAS_PER_SET; | |
39244528 NC |
697 | newroot->next = aroot; |
698 | aroot = newroot; | |
699 | PL_body_arenas = (void *) newroot; | |
52944de8 | 700 | DEBUG_m(PerlIO_printf(Perl_debug_log, "new arenaset %p\n", (void*)aroot)); |
5e258f8c JC |
701 | } |
702 | ||
703 | /* ok, now have arena-set with at least 1 empty/available arena-desc */ | |
39244528 NC |
704 | curr = aroot->curr++; |
705 | adesc = &(aroot->set[curr]); | |
5e258f8c JC |
706 | assert(!adesc->arena); |
707 | ||
89086707 | 708 | Newx(adesc->arena, arena_size, char); |
5e258f8c | 709 | adesc->size = arena_size; |
0a848332 | 710 | adesc->misc = misc; |
d2a0f284 | 711 | DEBUG_m(PerlIO_printf(Perl_debug_log, "arena %d added: %p size %d\n", |
6c9570dc | 712 | curr, (void*)adesc->arena, arena_size)); |
5e258f8c JC |
713 | |
714 | return adesc->arena; | |
5e258f8c JC |
715 | } |
716 | ||
53c1dcc0 | 717 | |
bd81e77b | 718 | /* return a thing to the free list */ |
29489e7c | 719 | |
bd81e77b NC |
720 | #define del_body(thing, root) \ |
721 | STMT_START { \ | |
00b6aa41 | 722 | void ** const thing_copy = (void **)thing;\ |
bd81e77b NC |
723 | LOCK_SV_MUTEX; \ |
724 | *thing_copy = *root; \ | |
725 | *root = (void*)thing_copy; \ | |
726 | UNLOCK_SV_MUTEX; \ | |
727 | } STMT_END | |
29489e7c | 728 | |
bd81e77b | 729 | /* |
d2a0f284 JC |
730 | |
731 | =head1 SV-Body Allocation | |
732 | ||
733 | Allocation of SV-bodies is similar to SV-heads, differing as follows; | |
734 | the allocation mechanism is used for many body types, so is somewhat | |
735 | more complicated, it uses arena-sets, and has no need for still-live | |
736 | SV detection. | |
737 | ||
738 | At the outermost level, (new|del)_X*V macros return bodies of the | |
739 | appropriate type. These macros call either (new|del)_body_type or | |
740 | (new|del)_body_allocated macro pairs, depending on specifics of the | |
741 | type. Most body types use the former pair, the latter pair is used to | |
742 | allocate body types with "ghost fields". | |
743 | ||
744 | "ghost fields" are fields that are unused in certain types, and | |
745 | consequently dont need to actually exist. They are declared because | |
746 | they're part of a "base type", which allows use of functions as | |
747 | methods. The simplest examples are AVs and HVs, 2 aggregate types | |
748 | which don't use the fields which support SCALAR semantics. | |
749 | ||
750 | For these types, the arenas are carved up into *_allocated size | |
751 | chunks, we thus avoid wasted memory for those unaccessed members. | |
752 | When bodies are allocated, we adjust the pointer back in memory by the | |
753 | size of the bit not allocated, so it's as if we allocated the full | |
754 | structure. (But things will all go boom if you write to the part that | |
755 | is "not there", because you'll be overwriting the last members of the | |
756 | preceding structure in memory.) | |
757 | ||
758 | We calculate the correction using the STRUCT_OFFSET macro. For | |
759 | example, if xpv_allocated is the same structure as XPV then the two | |
760 | OFFSETs sum to zero, and the pointer is unchanged. If the allocated | |
761 | structure is smaller (no initial NV actually allocated) then the net | |
762 | effect is to subtract the size of the NV from the pointer, to return a | |
763 | new pointer as if an initial NV were actually allocated. | |
764 | ||
765 | This is the same trick as was used for NV and IV bodies. Ironically it | |
766 | doesn't need to be used for NV bodies any more, because NV is now at | |
767 | the start of the structure. IV bodies don't need it either, because | |
768 | they are no longer allocated. | |
769 | ||
770 | In turn, the new_body_* allocators call S_new_body(), which invokes | |
771 | new_body_inline macro, which takes a lock, and takes a body off the | |
772 | linked list at PL_body_roots[sv_type], calling S_more_bodies() if | |
773 | necessary to refresh an empty list. Then the lock is released, and | |
774 | the body is returned. | |
775 | ||
776 | S_more_bodies calls get_arena(), and carves it up into an array of N | |
777 | bodies, which it strings into a linked list. It looks up arena-size | |
778 | and body-size from the body_details table described below, thus | |
779 | supporting the multiple body-types. | |
780 | ||
781 | If PURIFY is defined, or PERL_ARENA_SIZE=0, arenas are not used, and | |
782 | the (new|del)_X*V macros are mapped directly to malloc/free. | |
783 | ||
784 | */ | |
785 | ||
786 | /* | |
787 | ||
788 | For each sv-type, struct body_details bodies_by_type[] carries | |
789 | parameters which control these aspects of SV handling: | |
790 | ||
791 | Arena_size determines whether arenas are used for this body type, and if | |
792 | so, how big they are. PURIFY or PERL_ARENA_SIZE=0 set this field to | |
793 | zero, forcing individual mallocs and frees. | |
794 | ||
795 | Body_size determines how big a body is, and therefore how many fit into | |
796 | each arena. Offset carries the body-pointer adjustment needed for | |
797 | *_allocated body types, and is used in *_allocated macros. | |
798 | ||
799 | But its main purpose is to parameterize info needed in | |
800 | Perl_sv_upgrade(). The info here dramatically simplifies the function | |
801 | vs the implementation in 5.8.7, making it table-driven. All fields | |
802 | are used for this, except for arena_size. | |
803 | ||
804 | For the sv-types that have no bodies, arenas are not used, so those | |
805 | PL_body_roots[sv_type] are unused, and can be overloaded. In | |
806 | something of a special case, SVt_NULL is borrowed for HE arenas; | |
807 | PL_body_roots[SVt_NULL] is filled by S_more_he, but the | |
808 | bodies_by_type[SVt_NULL] slot is not used, as the table is not | |
809 | available in hv.c, | |
810 | ||
811 | PTEs also use arenas, but are never seen in Perl_sv_upgrade. | |
812 | Nonetheless, they get their own slot in bodies_by_type[SVt_NULL], so | |
813 | they can just use the same allocation semantics. At first, PTEs were | |
814 | also overloaded to a non-body sv-type, but this yielded hard-to-find | |
815 | malloc bugs, so was simplified by claiming a new slot. This choice | |
816 | has no consequence at this time. | |
817 | ||
29489e7c DM |
818 | */ |
819 | ||
bd81e77b | 820 | struct body_details { |
0fb58b32 | 821 | U8 body_size; /* Size to allocate */ |
10666ae3 | 822 | U8 copy; /* Size of structure to copy (may be shorter) */ |
0fb58b32 | 823 | U8 offset; |
10666ae3 NC |
824 | unsigned int type : 4; /* We have space for a sanity check. */ |
825 | unsigned int cant_upgrade : 1; /* Cannot upgrade this type */ | |
826 | unsigned int zero_nv : 1; /* zero the NV when upgrading from this */ | |
827 | unsigned int arena : 1; /* Allocated from an arena */ | |
828 | size_t arena_size; /* Size of arena to allocate */ | |
bd81e77b | 829 | }; |
29489e7c | 830 | |
bd81e77b NC |
831 | #define HADNV FALSE |
832 | #define NONV TRUE | |
29489e7c | 833 | |
d2a0f284 | 834 | |
bd81e77b NC |
835 | #ifdef PURIFY |
836 | /* With -DPURFIY we allocate everything directly, and don't use arenas. | |
837 | This seems a rather elegant way to simplify some of the code below. */ | |
838 | #define HASARENA FALSE | |
839 | #else | |
840 | #define HASARENA TRUE | |
841 | #endif | |
842 | #define NOARENA FALSE | |
29489e7c | 843 | |
d2a0f284 JC |
844 | /* Size the arenas to exactly fit a given number of bodies. A count |
845 | of 0 fits the max number bodies into a PERL_ARENA_SIZE.block, | |
846 | simplifying the default. If count > 0, the arena is sized to fit | |
847 | only that many bodies, allowing arenas to be used for large, rare | |
848 | bodies (XPVFM, XPVIO) without undue waste. The arena size is | |
849 | limited by PERL_ARENA_SIZE, so we can safely oversize the | |
850 | declarations. | |
851 | */ | |
95db5f15 MB |
852 | #define FIT_ARENA0(body_size) \ |
853 | ((size_t)(PERL_ARENA_SIZE / body_size) * body_size) | |
854 | #define FIT_ARENAn(count,body_size) \ | |
855 | ( count * body_size <= PERL_ARENA_SIZE) \ | |
856 | ? count * body_size \ | |
857 | : FIT_ARENA0 (body_size) | |
858 | #define FIT_ARENA(count,body_size) \ | |
859 | count \ | |
860 | ? FIT_ARENAn (count, body_size) \ | |
861 | : FIT_ARENA0 (body_size) | |
d2a0f284 | 862 | |
bd81e77b | 863 | /* A macro to work out the offset needed to subtract from a pointer to (say) |
29489e7c | 864 | |
bd81e77b NC |
865 | typedef struct { |
866 | STRLEN xpv_cur; | |
867 | STRLEN xpv_len; | |
868 | } xpv_allocated; | |
29489e7c | 869 | |
bd81e77b | 870 | to make its members accessible via a pointer to (say) |
29489e7c | 871 | |
bd81e77b NC |
872 | struct xpv { |
873 | NV xnv_nv; | |
874 | STRLEN xpv_cur; | |
875 | STRLEN xpv_len; | |
876 | }; | |
29489e7c | 877 | |
bd81e77b | 878 | */ |
29489e7c | 879 | |
bd81e77b NC |
880 | #define relative_STRUCT_OFFSET(longer, shorter, member) \ |
881 | (STRUCT_OFFSET(shorter, member) - STRUCT_OFFSET(longer, member)) | |
29489e7c | 882 | |
bd81e77b NC |
883 | /* Calculate the length to copy. Specifically work out the length less any |
884 | final padding the compiler needed to add. See the comment in sv_upgrade | |
885 | for why copying the padding proved to be a bug. */ | |
29489e7c | 886 | |
bd81e77b NC |
887 | #define copy_length(type, last_member) \ |
888 | STRUCT_OFFSET(type, last_member) \ | |
889 | + sizeof (((type*)SvANY((SV*)0))->last_member) | |
29489e7c | 890 | |
bd81e77b | 891 | static const struct body_details bodies_by_type[] = { |
10666ae3 NC |
892 | { sizeof(HE), 0, 0, SVt_NULL, |
893 | FALSE, NONV, NOARENA, FIT_ARENA(0, sizeof(HE)) }, | |
d2a0f284 | 894 | |
1cb9cd50 NC |
895 | /* The bind placeholder pretends to be an RV for now. |
896 | Also it's marked as "can't upgrade" top stop anyone using it before it's | |
897 | implemented. */ | |
898 | { 0, 0, 0, SVt_BIND, TRUE, NONV, NOARENA, 0 }, | |
899 | ||
d2a0f284 JC |
900 | /* IVs are in the head, so the allocation size is 0. |
901 | However, the slot is overloaded for PTEs. */ | |
902 | { sizeof(struct ptr_tbl_ent), /* This is used for PTEs. */ | |
903 | sizeof(IV), /* This is used to copy out the IV body. */ | |
10666ae3 | 904 | STRUCT_OFFSET(XPVIV, xiv_iv), SVt_IV, FALSE, NONV, |
d2a0f284 JC |
905 | NOARENA /* IVS don't need an arena */, |
906 | /* But PTEs need to know the size of their arena */ | |
907 | FIT_ARENA(0, sizeof(struct ptr_tbl_ent)) | |
908 | }, | |
909 | ||
bd81e77b | 910 | /* 8 bytes on most ILP32 with IEEE doubles */ |
10666ae3 | 911 | { sizeof(NV), sizeof(NV), 0, SVt_NV, FALSE, HADNV, HASARENA, |
d2a0f284 JC |
912 | FIT_ARENA(0, sizeof(NV)) }, |
913 | ||
914 | /* RVs are in the head now. */ | |
10666ae3 | 915 | { 0, 0, 0, SVt_RV, FALSE, NONV, NOARENA, 0 }, |
d2a0f284 | 916 | |
bd81e77b | 917 | /* 8 bytes on most ILP32 with IEEE doubles */ |
d2a0f284 JC |
918 | { sizeof(xpv_allocated), |
919 | copy_length(XPV, xpv_len) | |
920 | - relative_STRUCT_OFFSET(xpv_allocated, XPV, xpv_cur), | |
921 | + relative_STRUCT_OFFSET(xpv_allocated, XPV, xpv_cur), | |
10666ae3 | 922 | SVt_PV, FALSE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpv_allocated)) }, |
d2a0f284 | 923 | |
bd81e77b | 924 | /* 12 */ |
d2a0f284 JC |
925 | { sizeof(xpviv_allocated), |
926 | copy_length(XPVIV, xiv_u) | |
927 | - relative_STRUCT_OFFSET(xpviv_allocated, XPVIV, xpv_cur), | |
928 | + relative_STRUCT_OFFSET(xpviv_allocated, XPVIV, xpv_cur), | |
10666ae3 | 929 | SVt_PVIV, FALSE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpviv_allocated)) }, |
d2a0f284 | 930 | |
bd81e77b | 931 | /* 20 */ |
10666ae3 | 932 | { sizeof(XPVNV), copy_length(XPVNV, xiv_u), 0, SVt_PVNV, FALSE, HADNV, |
d2a0f284 JC |
933 | HASARENA, FIT_ARENA(0, sizeof(XPVNV)) }, |
934 | ||
bd81e77b | 935 | /* 28 */ |
10666ae3 | 936 | { sizeof(XPVMG), copy_length(XPVMG, xmg_stash), 0, SVt_PVMG, FALSE, HADNV, |
d2a0f284 JC |
937 | HASARENA, FIT_ARENA(0, sizeof(XPVMG)) }, |
938 | ||
bd81e77b | 939 | /* 48 */ |
10666ae3 | 940 | { sizeof(XPVGV), sizeof(XPVGV), 0, SVt_PVGV, TRUE, HADNV, |
d2a0f284 JC |
941 | HASARENA, FIT_ARENA(0, sizeof(XPVGV)) }, |
942 | ||
bd81e77b | 943 | /* 64 */ |
10666ae3 | 944 | { sizeof(XPVLV), sizeof(XPVLV), 0, SVt_PVLV, TRUE, HADNV, |
d2a0f284 JC |
945 | HASARENA, FIT_ARENA(0, sizeof(XPVLV)) }, |
946 | ||
947 | { sizeof(xpvav_allocated), | |
948 | copy_length(XPVAV, xmg_stash) | |
949 | - relative_STRUCT_OFFSET(xpvav_allocated, XPVAV, xav_fill), | |
950 | + relative_STRUCT_OFFSET(xpvav_allocated, XPVAV, xav_fill), | |
10666ae3 | 951 | SVt_PVAV, TRUE, HADNV, HASARENA, FIT_ARENA(0, sizeof(xpvav_allocated)) }, |
d2a0f284 JC |
952 | |
953 | { sizeof(xpvhv_allocated), | |
954 | copy_length(XPVHV, xmg_stash) | |
955 | - relative_STRUCT_OFFSET(xpvhv_allocated, XPVHV, xhv_fill), | |
956 | + relative_STRUCT_OFFSET(xpvhv_allocated, XPVHV, xhv_fill), | |
10666ae3 | 957 | SVt_PVHV, TRUE, HADNV, HASARENA, FIT_ARENA(0, sizeof(xpvhv_allocated)) }, |
d2a0f284 | 958 | |
c84c4652 | 959 | /* 56 */ |
4115f141 | 960 | { sizeof(xpvcv_allocated), sizeof(xpvcv_allocated), |
c84c4652 | 961 | + relative_STRUCT_OFFSET(xpvcv_allocated, XPVCV, xpv_cur), |
10666ae3 | 962 | SVt_PVCV, TRUE, NONV, HASARENA, FIT_ARENA(0, sizeof(xpvcv_allocated)) }, |
d2a0f284 | 963 | |
4115f141 | 964 | { sizeof(xpvfm_allocated), sizeof(xpvfm_allocated), |
3038937b | 965 | + relative_STRUCT_OFFSET(xpvfm_allocated, XPVFM, xpv_cur), |
10666ae3 | 966 | SVt_PVFM, TRUE, NONV, NOARENA, FIT_ARENA(20, sizeof(xpvfm_allocated)) }, |
d2a0f284 JC |
967 | |
968 | /* XPVIO is 84 bytes, fits 48x */ | |
10666ae3 | 969 | { sizeof(XPVIO), sizeof(XPVIO), 0, SVt_PVIO, TRUE, HADNV, |
d2a0f284 | 970 | HASARENA, FIT_ARENA(24, sizeof(XPVIO)) }, |
bd81e77b | 971 | }; |
29489e7c | 972 | |
d2a0f284 JC |
973 | #define new_body_type(sv_type) \ |
974 | (void *)((char *)S_new_body(aTHX_ sv_type)) | |
29489e7c | 975 | |
bd81e77b NC |
976 | #define del_body_type(p, sv_type) \ |
977 | del_body(p, &PL_body_roots[sv_type]) | |
29489e7c | 978 | |
29489e7c | 979 | |
bd81e77b | 980 | #define new_body_allocated(sv_type) \ |
d2a0f284 | 981 | (void *)((char *)S_new_body(aTHX_ sv_type) \ |
bd81e77b | 982 | - bodies_by_type[sv_type].offset) |
29489e7c | 983 | |
bd81e77b NC |
984 | #define del_body_allocated(p, sv_type) \ |
985 | del_body(p + bodies_by_type[sv_type].offset, &PL_body_roots[sv_type]) | |
29489e7c | 986 | |
29489e7c | 987 | |
bd81e77b NC |
988 | #define my_safemalloc(s) (void*)safemalloc(s) |
989 | #define my_safecalloc(s) (void*)safecalloc(s, 1) | |
990 | #define my_safefree(p) safefree((char*)p) | |
29489e7c | 991 | |
bd81e77b | 992 | #ifdef PURIFY |
29489e7c | 993 | |
bd81e77b NC |
994 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
995 | #define del_XNV(p) my_safefree(p) | |
29489e7c | 996 | |
bd81e77b NC |
997 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
998 | #define del_XPVNV(p) my_safefree(p) | |
29489e7c | 999 | |
bd81e77b NC |
1000 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1001 | #define del_XPVAV(p) my_safefree(p) | |
29489e7c | 1002 | |
bd81e77b NC |
1003 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) |
1004 | #define del_XPVHV(p) my_safefree(p) | |
29489e7c | 1005 | |
bd81e77b NC |
1006 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1007 | #define del_XPVMG(p) my_safefree(p) | |
29489e7c | 1008 | |
bd81e77b NC |
1009 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1010 | #define del_XPVGV(p) my_safefree(p) | |
29489e7c | 1011 | |
bd81e77b | 1012 | #else /* !PURIFY */ |
29489e7c | 1013 | |
bd81e77b NC |
1014 | #define new_XNV() new_body_type(SVt_NV) |
1015 | #define del_XNV(p) del_body_type(p, SVt_NV) | |
29489e7c | 1016 | |
bd81e77b NC |
1017 | #define new_XPVNV() new_body_type(SVt_PVNV) |
1018 | #define del_XPVNV(p) del_body_type(p, SVt_PVNV) | |
29489e7c | 1019 | |
bd81e77b NC |
1020 | #define new_XPVAV() new_body_allocated(SVt_PVAV) |
1021 | #define del_XPVAV(p) del_body_allocated(p, SVt_PVAV) | |
645c22ef | 1022 | |
bd81e77b NC |
1023 | #define new_XPVHV() new_body_allocated(SVt_PVHV) |
1024 | #define del_XPVHV(p) del_body_allocated(p, SVt_PVHV) | |
645c22ef | 1025 | |
bd81e77b NC |
1026 | #define new_XPVMG() new_body_type(SVt_PVMG) |
1027 | #define del_XPVMG(p) del_body_type(p, SVt_PVMG) | |
645c22ef | 1028 | |
bd81e77b NC |
1029 | #define new_XPVGV() new_body_type(SVt_PVGV) |
1030 | #define del_XPVGV(p) del_body_type(p, SVt_PVGV) | |
1d7c1841 | 1031 | |
bd81e77b | 1032 | #endif /* PURIFY */ |
93e68bfb | 1033 | |
bd81e77b | 1034 | /* no arena for you! */ |
93e68bfb | 1035 | |
bd81e77b | 1036 | #define new_NOARENA(details) \ |
d2a0f284 | 1037 | my_safemalloc((details)->body_size + (details)->offset) |
bd81e77b | 1038 | #define new_NOARENAZ(details) \ |
d2a0f284 JC |
1039 | my_safecalloc((details)->body_size + (details)->offset) |
1040 | ||
1041 | STATIC void * | |
1042 | S_more_bodies (pTHX_ svtype sv_type) | |
1043 | { | |
1044 | dVAR; | |
1045 | void ** const root = &PL_body_roots[sv_type]; | |
96a5add6 | 1046 | const struct body_details * const bdp = &bodies_by_type[sv_type]; |
d2a0f284 JC |
1047 | const size_t body_size = bdp->body_size; |
1048 | char *start; | |
1049 | const char *end; | |
0b2d3faa | 1050 | #if defined(DEBUGGING) && !defined(PERL_GLOBAL_STRUCT_PRIVATE) |
23e9d66c NC |
1051 | static bool done_sanity_check; |
1052 | ||
0b2d3faa JH |
1053 | /* PERL_GLOBAL_STRUCT_PRIVATE cannot coexist with global |
1054 | * variables like done_sanity_check. */ | |
10666ae3 | 1055 | if (!done_sanity_check) { |
ea471437 | 1056 | unsigned int i = SVt_LAST; |
10666ae3 NC |
1057 | |
1058 | done_sanity_check = TRUE; | |
1059 | ||
1060 | while (i--) | |
1061 | assert (bodies_by_type[i].type == i); | |
1062 | } | |
1063 | #endif | |
1064 | ||
23e9d66c NC |
1065 | assert(bdp->arena_size); |
1066 | ||
0a848332 | 1067 | start = (char*) Perl_get_arena(aTHX_ bdp->arena_size, sv_type); |
d2a0f284 JC |
1068 | |
1069 | end = start + bdp->arena_size - body_size; | |
1070 | ||
d2a0f284 JC |
1071 | /* computed count doesnt reflect the 1st slot reservation */ |
1072 | DEBUG_m(PerlIO_printf(Perl_debug_log, | |
1073 | "arena %p end %p arena-size %d type %d size %d ct %d\n", | |
6c9570dc | 1074 | (void*)start, (void*)end, |
0e84aef4 JH |
1075 | (int)bdp->arena_size, sv_type, (int)body_size, |
1076 | (int)bdp->arena_size / (int)body_size)); | |
d2a0f284 JC |
1077 | |
1078 | *root = (void *)start; | |
1079 | ||
1080 | while (start < end) { | |
1081 | char * const next = start + body_size; | |
1082 | *(void**) start = (void *)next; | |
1083 | start = next; | |
1084 | } | |
1085 | *(void **)start = 0; | |
1086 | ||
1087 | return *root; | |
1088 | } | |
1089 | ||
1090 | /* grab a new thing from the free list, allocating more if necessary. | |
1091 | The inline version is used for speed in hot routines, and the | |
1092 | function using it serves the rest (unless PURIFY). | |
1093 | */ | |
1094 | #define new_body_inline(xpv, sv_type) \ | |
1095 | STMT_START { \ | |
1096 | void ** const r3wt = &PL_body_roots[sv_type]; \ | |
1097 | LOCK_SV_MUTEX; \ | |
11b79775 DD |
1098 | xpv = (PTR_TBL_ENT_t*) (*((void **)(r3wt)) \ |
1099 | ? *((void **)(r3wt)) : more_bodies(sv_type)); \ | |
d2a0f284 JC |
1100 | *(r3wt) = *(void**)(xpv); \ |
1101 | UNLOCK_SV_MUTEX; \ | |
1102 | } STMT_END | |
1103 | ||
1104 | #ifndef PURIFY | |
1105 | ||
1106 | STATIC void * | |
1107 | S_new_body(pTHX_ svtype sv_type) | |
1108 | { | |
1109 | dVAR; | |
1110 | void *xpv; | |
1111 | new_body_inline(xpv, sv_type); | |
1112 | return xpv; | |
1113 | } | |
1114 | ||
1115 | #endif | |
93e68bfb | 1116 | |
bd81e77b NC |
1117 | /* |
1118 | =for apidoc sv_upgrade | |
93e68bfb | 1119 | |
bd81e77b NC |
1120 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
1121 | SV, then copies across as much information as possible from the old body. | |
1122 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. | |
93e68bfb | 1123 | |
bd81e77b | 1124 | =cut |
93e68bfb | 1125 | */ |
93e68bfb | 1126 | |
bd81e77b | 1127 | void |
42d0e0b7 | 1128 | Perl_sv_upgrade(pTHX_ register SV *sv, svtype new_type) |
cac9b346 | 1129 | { |
97aff369 | 1130 | dVAR; |
bd81e77b NC |
1131 | void* old_body; |
1132 | void* new_body; | |
42d0e0b7 | 1133 | const svtype old_type = SvTYPE(sv); |
d2a0f284 | 1134 | const struct body_details *new_type_details; |
bd81e77b NC |
1135 | const struct body_details *const old_type_details |
1136 | = bodies_by_type + old_type; | |
cac9b346 | 1137 | |
bd81e77b NC |
1138 | if (new_type != SVt_PV && SvIsCOW(sv)) { |
1139 | sv_force_normal_flags(sv, 0); | |
1140 | } | |
cac9b346 | 1141 | |
bd81e77b NC |
1142 | if (old_type == new_type) |
1143 | return; | |
cac9b346 | 1144 | |
bd81e77b NC |
1145 | if (old_type > new_type) |
1146 | Perl_croak(aTHX_ "sv_upgrade from type %d down to type %d", | |
1147 | (int)old_type, (int)new_type); | |
cac9b346 | 1148 | |
cac9b346 | 1149 | |
bd81e77b | 1150 | old_body = SvANY(sv); |
de042e1d | 1151 | |
bd81e77b NC |
1152 | /* Copying structures onto other structures that have been neatly zeroed |
1153 | has a subtle gotcha. Consider XPVMG | |
cac9b346 | 1154 | |
bd81e77b NC |
1155 | +------+------+------+------+------+-------+-------+ |
1156 | | NV | CUR | LEN | IV | MAGIC | STASH | | |
1157 | +------+------+------+------+------+-------+-------+ | |
1158 | 0 4 8 12 16 20 24 28 | |
645c22ef | 1159 | |
bd81e77b NC |
1160 | where NVs are aligned to 8 bytes, so that sizeof that structure is |
1161 | actually 32 bytes long, with 4 bytes of padding at the end: | |
08742458 | 1162 | |
bd81e77b NC |
1163 | +------+------+------+------+------+-------+-------+------+ |
1164 | | NV | CUR | LEN | IV | MAGIC | STASH | ??? | | |
1165 | +------+------+------+------+------+-------+-------+------+ | |
1166 | 0 4 8 12 16 20 24 28 32 | |
08742458 | 1167 | |
bd81e77b | 1168 | so what happens if you allocate memory for this structure: |
30f9da9e | 1169 | |
bd81e77b NC |
1170 | +------+------+------+------+------+-------+-------+------+------+... |
1171 | | NV | CUR | LEN | IV | MAGIC | STASH | GP | NAME | | |
1172 | +------+------+------+------+------+-------+-------+------+------+... | |
1173 | 0 4 8 12 16 20 24 28 32 36 | |
bfc44f79 | 1174 | |
bd81e77b NC |
1175 | zero it, then copy sizeof(XPVMG) bytes on top of it? Not quite what you |
1176 | expect, because you copy the area marked ??? onto GP. Now, ??? may have | |
1177 | started out as zero once, but it's quite possible that it isn't. So now, | |
1178 | rather than a nicely zeroed GP, you have it pointing somewhere random. | |
1179 | Bugs ensue. | |
bfc44f79 | 1180 | |
bd81e77b NC |
1181 | (In fact, GP ends up pointing at a previous GP structure, because the |
1182 | principle cause of the padding in XPVMG getting garbage is a copy of | |
6c9e42f7 NC |
1183 | sizeof(XPVMG) bytes from a XPVGV structure in sv_unglob. Right now |
1184 | this happens to be moot because XPVGV has been re-ordered, with GP | |
1185 | no longer after STASH) | |
30f9da9e | 1186 | |
bd81e77b NC |
1187 | So we are careful and work out the size of used parts of all the |
1188 | structures. */ | |
bfc44f79 | 1189 | |
bd81e77b NC |
1190 | switch (old_type) { |
1191 | case SVt_NULL: | |
1192 | break; | |
1193 | case SVt_IV: | |
1194 | if (new_type < SVt_PVIV) { | |
1195 | new_type = (new_type == SVt_NV) | |
1196 | ? SVt_PVNV : SVt_PVIV; | |
bd81e77b NC |
1197 | } |
1198 | break; | |
1199 | case SVt_NV: | |
1200 | if (new_type < SVt_PVNV) { | |
1201 | new_type = SVt_PVNV; | |
bd81e77b NC |
1202 | } |
1203 | break; | |
1204 | case SVt_RV: | |
1205 | break; | |
1206 | case SVt_PV: | |
1207 | assert(new_type > SVt_PV); | |
1208 | assert(SVt_IV < SVt_PV); | |
1209 | assert(SVt_NV < SVt_PV); | |
1210 | break; | |
1211 | case SVt_PVIV: | |
1212 | break; | |
1213 | case SVt_PVNV: | |
1214 | break; | |
1215 | case SVt_PVMG: | |
1216 | /* Because the XPVMG of PL_mess_sv isn't allocated from the arena, | |
1217 | there's no way that it can be safely upgraded, because perl.c | |
1218 | expects to Safefree(SvANY(PL_mess_sv)) */ | |
1219 | assert(sv != PL_mess_sv); | |
1220 | /* This flag bit is used to mean other things in other scalar types. | |
1221 | Given that it only has meaning inside the pad, it shouldn't be set | |
1222 | on anything that can get upgraded. */ | |
00b1698f | 1223 | assert(!SvPAD_TYPED(sv)); |
bd81e77b NC |
1224 | break; |
1225 | default: | |
1226 | if (old_type_details->cant_upgrade) | |
c81225bc NC |
1227 | Perl_croak(aTHX_ "Can't upgrade %s (%" UVuf ") to %" UVuf, |
1228 | sv_reftype(sv, 0), (UV) old_type, (UV) new_type); | |
bd81e77b | 1229 | } |
2fa1109b | 1230 | new_type_details = bodies_by_type + new_type; |
645c22ef | 1231 | |
bd81e77b NC |
1232 | SvFLAGS(sv) &= ~SVTYPEMASK; |
1233 | SvFLAGS(sv) |= new_type; | |
932e9ff9 | 1234 | |
ab4416c0 NC |
1235 | /* This can't happen, as SVt_NULL is <= all values of new_type, so one of |
1236 | the return statements above will have triggered. */ | |
1237 | assert (new_type != SVt_NULL); | |
bd81e77b | 1238 | switch (new_type) { |
bd81e77b NC |
1239 | case SVt_IV: |
1240 | assert(old_type == SVt_NULL); | |
1241 | SvANY(sv) = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); | |
1242 | SvIV_set(sv, 0); | |
1243 | return; | |
1244 | case SVt_NV: | |
1245 | assert(old_type == SVt_NULL); | |
1246 | SvANY(sv) = new_XNV(); | |
1247 | SvNV_set(sv, 0); | |
1248 | return; | |
1249 | case SVt_RV: | |
1250 | assert(old_type == SVt_NULL); | |
1251 | SvANY(sv) = &sv->sv_u.svu_rv; | |
1252 | SvRV_set(sv, 0); | |
1253 | return; | |
1254 | case SVt_PVHV: | |
bd81e77b | 1255 | case SVt_PVAV: |
d2a0f284 | 1256 | assert(new_type_details->body_size); |
c1ae03ae NC |
1257 | |
1258 | #ifndef PURIFY | |
1259 | assert(new_type_details->arena); | |
d2a0f284 | 1260 | assert(new_type_details->arena_size); |
c1ae03ae | 1261 | /* This points to the start of the allocated area. */ |
d2a0f284 JC |
1262 | new_body_inline(new_body, new_type); |
1263 | Zero(new_body, new_type_details->body_size, char); | |
c1ae03ae NC |
1264 | new_body = ((char *)new_body) - new_type_details->offset; |
1265 | #else | |
1266 | /* We always allocated the full length item with PURIFY. To do this | |
1267 | we fake things so that arena is false for all 16 types.. */ | |
1268 | new_body = new_NOARENAZ(new_type_details); | |
1269 | #endif | |
1270 | SvANY(sv) = new_body; | |
1271 | if (new_type == SVt_PVAV) { | |
1272 | AvMAX(sv) = -1; | |
1273 | AvFILLp(sv) = -1; | |
1274 | AvREAL_only(sv); | |
1275 | } | |
aeb18a1e | 1276 | |
bd81e77b NC |
1277 | /* SVt_NULL isn't the only thing upgraded to AV or HV. |
1278 | The target created by newSVrv also is, and it can have magic. | |
1279 | However, it never has SvPVX set. | |
1280 | */ | |
1281 | if (old_type >= SVt_RV) { | |
1282 | assert(SvPVX_const(sv) == 0); | |
1283 | } | |
aeb18a1e | 1284 | |
bd81e77b | 1285 | if (old_type >= SVt_PVMG) { |
e736a858 | 1286 | SvMAGIC_set(sv, ((XPVMG*)old_body)->xmg_u.xmg_magic); |
bd81e77b | 1287 | SvSTASH_set(sv, ((XPVMG*)old_body)->xmg_stash); |
797c7171 NC |
1288 | } else { |
1289 | sv->sv_u.svu_array = NULL; /* or svu_hash */ | |
bd81e77b NC |
1290 | } |
1291 | break; | |
93e68bfb | 1292 | |
93e68bfb | 1293 | |
bd81e77b NC |
1294 | case SVt_PVIV: |
1295 | /* XXX Is this still needed? Was it ever needed? Surely as there is | |
1296 | no route from NV to PVIV, NOK can never be true */ | |
1297 | assert(!SvNOKp(sv)); | |
1298 | assert(!SvNOK(sv)); | |
1299 | case SVt_PVIO: | |
1300 | case SVt_PVFM: | |
bd81e77b NC |
1301 | case SVt_PVGV: |
1302 | case SVt_PVCV: | |
1303 | case SVt_PVLV: | |
1304 | case SVt_PVMG: | |
1305 | case SVt_PVNV: | |
1306 | case SVt_PV: | |
93e68bfb | 1307 | |
d2a0f284 | 1308 | assert(new_type_details->body_size); |
bd81e77b NC |
1309 | /* We always allocated the full length item with PURIFY. To do this |
1310 | we fake things so that arena is false for all 16 types.. */ | |
1311 | if(new_type_details->arena) { | |
1312 | /* This points to the start of the allocated area. */ | |
d2a0f284 JC |
1313 | new_body_inline(new_body, new_type); |
1314 | Zero(new_body, new_type_details->body_size, char); | |
bd81e77b NC |
1315 | new_body = ((char *)new_body) - new_type_details->offset; |
1316 | } else { | |
1317 | new_body = new_NOARENAZ(new_type_details); | |
1318 | } | |
1319 | SvANY(sv) = new_body; | |
5e2fc214 | 1320 | |
bd81e77b | 1321 | if (old_type_details->copy) { |
f9ba3d20 NC |
1322 | /* There is now the potential for an upgrade from something without |
1323 | an offset (PVNV or PVMG) to something with one (PVCV, PVFM) */ | |
1324 | int offset = old_type_details->offset; | |
1325 | int length = old_type_details->copy; | |
1326 | ||
1327 | if (new_type_details->offset > old_type_details->offset) { | |
d4c19fe8 | 1328 | const int difference |
f9ba3d20 NC |
1329 | = new_type_details->offset - old_type_details->offset; |
1330 | offset += difference; | |
1331 | length -= difference; | |
1332 | } | |
1333 | assert (length >= 0); | |
1334 | ||
1335 | Copy((char *)old_body + offset, (char *)new_body + offset, length, | |
1336 | char); | |
bd81e77b NC |
1337 | } |
1338 | ||
1339 | #ifndef NV_ZERO_IS_ALLBITS_ZERO | |
f2524eef | 1340 | /* If NV 0.0 is stores as all bits 0 then Zero() already creates a |
e5ce394c NC |
1341 | * correct 0.0 for us. Otherwise, if the old body didn't have an |
1342 | * NV slot, but the new one does, then we need to initialise the | |
1343 | * freshly created NV slot with whatever the correct bit pattern is | |
1344 | * for 0.0 */ | |
1345 | if (old_type_details->zero_nv && !new_type_details->zero_nv) | |
bd81e77b | 1346 | SvNV_set(sv, 0); |
82048762 | 1347 | #endif |
5e2fc214 | 1348 | |
bd81e77b | 1349 | if (new_type == SVt_PVIO) |
f2524eef | 1350 | IoPAGE_LEN(sv) = 60; |
bd81e77b | 1351 | if (old_type < SVt_RV) |
6136c704 | 1352 | SvPV_set(sv, NULL); |
bd81e77b NC |
1353 | break; |
1354 | default: | |
afd78fd5 JH |
1355 | Perl_croak(aTHX_ "panic: sv_upgrade to unknown type %lu", |
1356 | (unsigned long)new_type); | |
bd81e77b | 1357 | } |
73171d91 | 1358 | |
d2a0f284 JC |
1359 | if (old_type_details->arena) { |
1360 | /* If there was an old body, then we need to free it. | |
1361 | Note that there is an assumption that all bodies of types that | |
1362 | can be upgraded came from arenas. Only the more complex non- | |
1363 | upgradable types are allowed to be directly malloc()ed. */ | |
bd81e77b NC |
1364 | #ifdef PURIFY |
1365 | my_safefree(old_body); | |
1366 | #else | |
1367 | del_body((void*)((char*)old_body + old_type_details->offset), | |
1368 | &PL_body_roots[old_type]); | |
1369 | #endif | |
1370 | } | |
1371 | } | |
73171d91 | 1372 | |
bd81e77b NC |
1373 | /* |
1374 | =for apidoc sv_backoff | |
73171d91 | 1375 | |
bd81e77b NC |
1376 | Remove any string offset. You should normally use the C<SvOOK_off> macro |
1377 | wrapper instead. | |
73171d91 | 1378 | |
bd81e77b | 1379 | =cut |
73171d91 NC |
1380 | */ |
1381 | ||
bd81e77b NC |
1382 | int |
1383 | Perl_sv_backoff(pTHX_ register SV *sv) | |
1384 | { | |
96a5add6 | 1385 | PERL_UNUSED_CONTEXT; |
bd81e77b NC |
1386 | assert(SvOOK(sv)); |
1387 | assert(SvTYPE(sv) != SVt_PVHV); | |
1388 | assert(SvTYPE(sv) != SVt_PVAV); | |
1389 | if (SvIVX(sv)) { | |
1390 | const char * const s = SvPVX_const(sv); | |
1391 | SvLEN_set(sv, SvLEN(sv) + SvIVX(sv)); | |
1392 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); | |
1393 | SvIV_set(sv, 0); | |
1394 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); | |
1395 | } | |
1396 | SvFLAGS(sv) &= ~SVf_OOK; | |
1397 | return 0; | |
1398 | } | |
73171d91 | 1399 | |
bd81e77b NC |
1400 | /* |
1401 | =for apidoc sv_grow | |
73171d91 | 1402 | |
bd81e77b NC |
1403 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
1404 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
1405 | Use the C<SvGROW> wrapper instead. | |
93e68bfb | 1406 | |
bd81e77b NC |
1407 | =cut |
1408 | */ | |
93e68bfb | 1409 | |
bd81e77b NC |
1410 | char * |
1411 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) | |
1412 | { | |
1413 | register char *s; | |
93e68bfb | 1414 | |
5db06880 NC |
1415 | if (PL_madskills && newlen >= 0x100000) { |
1416 | PerlIO_printf(Perl_debug_log, | |
1417 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
1418 | } | |
bd81e77b NC |
1419 | #ifdef HAS_64K_LIMIT |
1420 | if (newlen >= 0x10000) { | |
1421 | PerlIO_printf(Perl_debug_log, | |
1422 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
1423 | my_exit(1); | |
1424 | } | |
1425 | #endif /* HAS_64K_LIMIT */ | |
1426 | if (SvROK(sv)) | |
1427 | sv_unref(sv); | |
1428 | if (SvTYPE(sv) < SVt_PV) { | |
1429 | sv_upgrade(sv, SVt_PV); | |
1430 | s = SvPVX_mutable(sv); | |
1431 | } | |
1432 | else if (SvOOK(sv)) { /* pv is offset? */ | |
1433 | sv_backoff(sv); | |
1434 | s = SvPVX_mutable(sv); | |
1435 | if (newlen > SvLEN(sv)) | |
1436 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
1437 | #ifdef HAS_64K_LIMIT | |
1438 | if (newlen >= 0x10000) | |
1439 | newlen = 0xFFFF; | |
1440 | #endif | |
1441 | } | |
1442 | else | |
1443 | s = SvPVX_mutable(sv); | |
aeb18a1e | 1444 | |
bd81e77b NC |
1445 | if (newlen > SvLEN(sv)) { /* need more room? */ |
1446 | newlen = PERL_STRLEN_ROUNDUP(newlen); | |
1447 | if (SvLEN(sv) && s) { | |
1448 | #ifdef MYMALLOC | |
1449 | const STRLEN l = malloced_size((void*)SvPVX_const(sv)); | |
1450 | if (newlen <= l) { | |
1451 | SvLEN_set(sv, l); | |
1452 | return s; | |
1453 | } else | |
1454 | #endif | |
10edeb5d | 1455 | s = (char*)saferealloc(s, newlen); |
bd81e77b NC |
1456 | } |
1457 | else { | |
10edeb5d | 1458 | s = (char*)safemalloc(newlen); |
bd81e77b NC |
1459 | if (SvPVX_const(sv) && SvCUR(sv)) { |
1460 | Move(SvPVX_const(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); | |
1461 | } | |
1462 | } | |
1463 | SvPV_set(sv, s); | |
1464 | SvLEN_set(sv, newlen); | |
1465 | } | |
1466 | return s; | |
1467 | } | |
aeb18a1e | 1468 | |
bd81e77b NC |
1469 | /* |
1470 | =for apidoc sv_setiv | |
932e9ff9 | 1471 | |
bd81e77b NC |
1472 | Copies an integer into the given SV, upgrading first if necessary. |
1473 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
463ee0b2 | 1474 | |
bd81e77b NC |
1475 | =cut |
1476 | */ | |
463ee0b2 | 1477 | |
bd81e77b NC |
1478 | void |
1479 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) | |
1480 | { | |
97aff369 | 1481 | dVAR; |
bd81e77b NC |
1482 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
1483 | switch (SvTYPE(sv)) { | |
1484 | case SVt_NULL: | |
1485 | sv_upgrade(sv, SVt_IV); | |
1486 | break; | |
1487 | case SVt_NV: | |
1488 | sv_upgrade(sv, SVt_PVNV); | |
1489 | break; | |
1490 | case SVt_RV: | |
1491 | case SVt_PV: | |
1492 | sv_upgrade(sv, SVt_PVIV); | |
1493 | break; | |
463ee0b2 | 1494 | |
bd81e77b NC |
1495 | case SVt_PVGV: |
1496 | case SVt_PVAV: | |
1497 | case SVt_PVHV: | |
1498 | case SVt_PVCV: | |
1499 | case SVt_PVFM: | |
1500 | case SVt_PVIO: | |
1501 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), | |
1502 | OP_DESC(PL_op)); | |
42d0e0b7 | 1503 | default: NOOP; |
bd81e77b NC |
1504 | } |
1505 | (void)SvIOK_only(sv); /* validate number */ | |
1506 | SvIV_set(sv, i); | |
1507 | SvTAINT(sv); | |
1508 | } | |
932e9ff9 | 1509 | |
bd81e77b NC |
1510 | /* |
1511 | =for apidoc sv_setiv_mg | |
d33b2eba | 1512 | |
bd81e77b | 1513 | Like C<sv_setiv>, but also handles 'set' magic. |
1c846c1f | 1514 | |
bd81e77b NC |
1515 | =cut |
1516 | */ | |
d33b2eba | 1517 | |
bd81e77b NC |
1518 | void |
1519 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) | |
1520 | { | |
1521 | sv_setiv(sv,i); | |
1522 | SvSETMAGIC(sv); | |
1523 | } | |
727879eb | 1524 | |
bd81e77b NC |
1525 | /* |
1526 | =for apidoc sv_setuv | |
d33b2eba | 1527 | |
bd81e77b NC |
1528 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
1529 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
9b94d1dd | 1530 | |
bd81e77b NC |
1531 | =cut |
1532 | */ | |
d33b2eba | 1533 | |
bd81e77b NC |
1534 | void |
1535 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) | |
1536 | { | |
1537 | /* With these two if statements: | |
1538 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d33b2eba | 1539 | |
bd81e77b NC |
1540 | without |
1541 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
1c846c1f | 1542 | |
bd81e77b NC |
1543 | If you wish to remove them, please benchmark to see what the effect is |
1544 | */ | |
1545 | if (u <= (UV)IV_MAX) { | |
1546 | sv_setiv(sv, (IV)u); | |
1547 | return; | |
1548 | } | |
1549 | sv_setiv(sv, 0); | |
1550 | SvIsUV_on(sv); | |
1551 | SvUV_set(sv, u); | |
1552 | } | |
d33b2eba | 1553 | |
bd81e77b NC |
1554 | /* |
1555 | =for apidoc sv_setuv_mg | |
727879eb | 1556 | |
bd81e77b | 1557 | Like C<sv_setuv>, but also handles 'set' magic. |
9b94d1dd | 1558 | |
bd81e77b NC |
1559 | =cut |
1560 | */ | |
5e2fc214 | 1561 | |
bd81e77b NC |
1562 | void |
1563 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) | |
1564 | { | |
bd81e77b NC |
1565 | sv_setuv(sv,u); |
1566 | SvSETMAGIC(sv); | |
1567 | } | |
5e2fc214 | 1568 | |
954c1994 | 1569 | /* |
bd81e77b | 1570 | =for apidoc sv_setnv |
954c1994 | 1571 | |
bd81e77b NC |
1572 | Copies a double into the given SV, upgrading first if necessary. |
1573 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
1574 | |
1575 | =cut | |
1576 | */ | |
1577 | ||
63f97190 | 1578 | void |
bd81e77b | 1579 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 1580 | { |
97aff369 | 1581 | dVAR; |
bd81e77b NC |
1582 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
1583 | switch (SvTYPE(sv)) { | |
79072805 | 1584 | case SVt_NULL: |
79072805 | 1585 | case SVt_IV: |
bd81e77b | 1586 | sv_upgrade(sv, SVt_NV); |
79072805 | 1587 | break; |
ed6116ce | 1588 | case SVt_RV: |
79072805 | 1589 | case SVt_PV: |
79072805 | 1590 | case SVt_PVIV: |
bd81e77b | 1591 | sv_upgrade(sv, SVt_PVNV); |
79072805 | 1592 | break; |
bd4b1eb5 | 1593 | |
bd4b1eb5 | 1594 | case SVt_PVGV: |
bd81e77b NC |
1595 | case SVt_PVAV: |
1596 | case SVt_PVHV: | |
79072805 | 1597 | case SVt_PVCV: |
bd81e77b NC |
1598 | case SVt_PVFM: |
1599 | case SVt_PVIO: | |
1600 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), | |
1601 | OP_NAME(PL_op)); | |
42d0e0b7 | 1602 | default: NOOP; |
2068cd4d | 1603 | } |
bd81e77b NC |
1604 | SvNV_set(sv, num); |
1605 | (void)SvNOK_only(sv); /* validate number */ | |
1606 | SvTAINT(sv); | |
79072805 LW |
1607 | } |
1608 | ||
645c22ef | 1609 | /* |
bd81e77b | 1610 | =for apidoc sv_setnv_mg |
645c22ef | 1611 | |
bd81e77b | 1612 | Like C<sv_setnv>, but also handles 'set' magic. |
645c22ef DM |
1613 | |
1614 | =cut | |
1615 | */ | |
1616 | ||
bd81e77b NC |
1617 | void |
1618 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) | |
79072805 | 1619 | { |
bd81e77b NC |
1620 | sv_setnv(sv,num); |
1621 | SvSETMAGIC(sv); | |
79072805 LW |
1622 | } |
1623 | ||
bd81e77b NC |
1624 | /* Print an "isn't numeric" warning, using a cleaned-up, |
1625 | * printable version of the offending string | |
1626 | */ | |
954c1994 | 1627 | |
bd81e77b NC |
1628 | STATIC void |
1629 | S_not_a_number(pTHX_ SV *sv) | |
79072805 | 1630 | { |
97aff369 | 1631 | dVAR; |
bd81e77b NC |
1632 | SV *dsv; |
1633 | char tmpbuf[64]; | |
1634 | const char *pv; | |
94463019 JH |
1635 | |
1636 | if (DO_UTF8(sv)) { | |
396482e1 | 1637 | dsv = sv_2mortal(newSVpvs("")); |
94463019 JH |
1638 | pv = sv_uni_display(dsv, sv, 10, 0); |
1639 | } else { | |
1640 | char *d = tmpbuf; | |
551405c4 | 1641 | const char * const limit = tmpbuf + sizeof(tmpbuf) - 8; |
94463019 JH |
1642 | /* each *s can expand to 4 chars + "...\0", |
1643 | i.e. need room for 8 chars */ | |
ecdeb87c | 1644 | |
00b6aa41 AL |
1645 | const char *s = SvPVX_const(sv); |
1646 | const char * const end = s + SvCUR(sv); | |
1647 | for ( ; s < end && d < limit; s++ ) { | |
94463019 JH |
1648 | int ch = *s & 0xFF; |
1649 | if (ch & 128 && !isPRINT_LC(ch)) { | |
1650 | *d++ = 'M'; | |
1651 | *d++ = '-'; | |
1652 | ch &= 127; | |
1653 | } | |
1654 | if (ch == '\n') { | |
1655 | *d++ = '\\'; | |
1656 | *d++ = 'n'; | |
1657 | } | |
1658 | else if (ch == '\r') { | |
1659 | *d++ = '\\'; | |
1660 | *d++ = 'r'; | |
1661 | } | |
1662 | else if (ch == '\f') { | |
1663 | *d++ = '\\'; | |
1664 | *d++ = 'f'; | |
1665 | } | |
1666 | else if (ch == '\\') { | |
1667 | *d++ = '\\'; | |
1668 | *d++ = '\\'; | |
1669 | } | |
1670 | else if (ch == '\0') { | |
1671 | *d++ = '\\'; | |
1672 | *d++ = '0'; | |
1673 | } | |
1674 | else if (isPRINT_LC(ch)) | |
1675 | *d++ = ch; | |
1676 | else { | |
1677 | *d++ = '^'; | |
1678 | *d++ = toCTRL(ch); | |
1679 | } | |
1680 | } | |
1681 | if (s < end) { | |
1682 | *d++ = '.'; | |
1683 | *d++ = '.'; | |
1684 | *d++ = '.'; | |
1685 | } | |
1686 | *d = '\0'; | |
1687 | pv = tmpbuf; | |
a0d0e21e | 1688 | } |
a0d0e21e | 1689 | |
533c011a | 1690 | if (PL_op) |
9014280d | 1691 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
1692 | "Argument \"%s\" isn't numeric in %s", pv, |
1693 | OP_DESC(PL_op)); | |
a0d0e21e | 1694 | else |
9014280d | 1695 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 1696 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
1697 | } |
1698 | ||
c2988b20 NC |
1699 | /* |
1700 | =for apidoc looks_like_number | |
1701 | ||
645c22ef DM |
1702 | Test if the content of an SV looks like a number (or is a number). |
1703 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
1704 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
1705 | |
1706 | =cut | |
1707 | */ | |
1708 | ||
1709 | I32 | |
1710 | Perl_looks_like_number(pTHX_ SV *sv) | |
1711 | { | |
a3b680e6 | 1712 | register const char *sbegin; |
c2988b20 NC |
1713 | STRLEN len; |
1714 | ||
1715 | if (SvPOK(sv)) { | |
3f7c398e | 1716 | sbegin = SvPVX_const(sv); |
c2988b20 NC |
1717 | len = SvCUR(sv); |
1718 | } | |
1719 | else if (SvPOKp(sv)) | |
83003860 | 1720 | sbegin = SvPV_const(sv, len); |
c2988b20 | 1721 | else |
e0ab1c0e | 1722 | return SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK); |
c2988b20 NC |
1723 | return grok_number(sbegin, len, NULL); |
1724 | } | |
25da4f38 | 1725 | |
19f6321d NC |
1726 | STATIC bool |
1727 | S_glob_2number(pTHX_ GV * const gv) | |
180488f8 NC |
1728 | { |
1729 | const U32 wasfake = SvFLAGS(gv) & SVf_FAKE; | |
1730 | SV *const buffer = sv_newmortal(); | |
1731 | ||
1732 | /* FAKE globs can get coerced, so need to turn this off temporarily if it | |
1733 | is on. */ | |
1734 | SvFAKE_off(gv); | |
1735 | gv_efullname3(buffer, gv, "*"); | |
1736 | SvFLAGS(gv) |= wasfake; | |
1737 | ||
675c862f AL |
1738 | /* We know that all GVs stringify to something that is not-a-number, |
1739 | so no need to test that. */ | |
1740 | if (ckWARN(WARN_NUMERIC)) | |
1741 | not_a_number(buffer); | |
1742 | /* We just want something true to return, so that S_sv_2iuv_common | |
1743 | can tail call us and return true. */ | |
19f6321d | 1744 | return TRUE; |
675c862f AL |
1745 | } |
1746 | ||
1747 | STATIC char * | |
19f6321d | 1748 | S_glob_2pv(pTHX_ GV * const gv, STRLEN * const len) |
675c862f AL |
1749 | { |
1750 | const U32 wasfake = SvFLAGS(gv) & SVf_FAKE; | |
1751 | SV *const buffer = sv_newmortal(); | |
1752 | ||
1753 | /* FAKE globs can get coerced, so need to turn this off temporarily if it | |
1754 | is on. */ | |
1755 | SvFAKE_off(gv); | |
1756 | gv_efullname3(buffer, gv, "*"); | |
1757 | SvFLAGS(gv) |= wasfake; | |
1758 | ||
1759 | assert(SvPOK(buffer)); | |
a6d61a6c NC |
1760 | if (len) { |
1761 | *len = SvCUR(buffer); | |
1762 | } | |
675c862f | 1763 | return SvPVX(buffer); |
180488f8 NC |
1764 | } |
1765 | ||
25da4f38 IZ |
1766 | /* Actually, ISO C leaves conversion of UV to IV undefined, but |
1767 | until proven guilty, assume that things are not that bad... */ | |
1768 | ||
645c22ef DM |
1769 | /* |
1770 | NV_PRESERVES_UV: | |
1771 | ||
1772 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
1773 | an IV (an assumption perl has been based on to date) it becomes necessary |
1774 | to remove the assumption that the NV always carries enough precision to | |
1775 | recreate the IV whenever needed, and that the NV is the canonical form. | |
1776 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 1777 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
1778 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
1779 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
1780 | conversion where precision was lost and IV/UV/NV slots that have a | |
1781 | valid conversion which has lost no precision | |
645c22ef | 1782 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
1783 | would lose precision, the precise conversion (or differently |
1784 | imprecise conversion) is also performed and cached, to prevent | |
1785 | requests for different numeric formats on the same SV causing | |
1786 | lossy conversion chains. (lossless conversion chains are perfectly | |
1787 | acceptable (still)) | |
1788 | ||
1789 | ||
1790 | flags are used: | |
1791 | SvIOKp is true if the IV slot contains a valid value | |
1792 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
1793 | SvNOKp is true if the NV slot contains a valid value | |
1794 | SvNOK is true only if the NV value is accurate | |
1795 | ||
1796 | so | |
645c22ef | 1797 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
1798 | IV(or UV) would lose accuracy over a direct conversion from PV to |
1799 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
1800 | SV as IOK NOKp (ie not NOK). | |
1801 | ||
645c22ef | 1802 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
1803 | NV would lose accuracy over a direct conversion from PV to NV. If it |
1804 | would, cache both conversions, flag similarly. | |
1805 | ||
1806 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
1807 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
1808 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
1809 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 1810 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 1811 | |
645c22ef DM |
1812 | The benefit of this is that operations such as pp_add know that if |
1813 | SvIOK is true for both left and right operands, then integer addition | |
1814 | can be used instead of floating point (for cases where the result won't | |
1815 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
1816 | loss of precision compared with integer addition. |
1817 | ||
1818 | * making IV and NV equal status should make maths accurate on 64 bit | |
1819 | platforms | |
1820 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 1821 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
1822 | looking for SvIOK and checking for overflow will not outweigh the |
1823 | fp to integer speedup) | |
1824 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
1825 | values, as the change from SvIOK to SvIOKp will cause a call into | |
1826 | sv_2iv each time rather than a macro access direct to the IV slot | |
1827 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 1828 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
1829 | |
1830 | #################################################################### | |
645c22ef DM |
1831 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
1832 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
1833 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
1834 | #################################################################### |
1835 | ||
645c22ef | 1836 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
1837 | performance ratio. |
1838 | */ | |
1839 | ||
1840 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
1841 | # define IS_NUMBER_UNDERFLOW_IV 1 |
1842 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
1843 | # define IS_NUMBER_IV_AND_UV 2 | |
1844 | # define IS_NUMBER_OVERFLOW_IV 4 | |
1845 | # define IS_NUMBER_OVERFLOW_UV 5 | |
1846 | ||
1847 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
1848 | |
1849 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
1850 | STATIC int | |
645c22ef | 1851 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 1852 | { |
97aff369 | 1853 | dVAR; |
b57a0404 | 1854 | PERL_UNUSED_ARG(numtype); /* Used only under DEBUGGING? */ |
3f7c398e | 1855 | 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 |
1856 | if (SvNVX(sv) < (NV)IV_MIN) { |
1857 | (void)SvIOKp_on(sv); | |
1858 | (void)SvNOK_on(sv); | |
45977657 | 1859 | SvIV_set(sv, IV_MIN); |
28e5dec8 JH |
1860 | return IS_NUMBER_UNDERFLOW_IV; |
1861 | } | |
1862 | if (SvNVX(sv) > (NV)UV_MAX) { | |
1863 | (void)SvIOKp_on(sv); | |
1864 | (void)SvNOK_on(sv); | |
1865 | SvIsUV_on(sv); | |
607fa7f2 | 1866 | SvUV_set(sv, UV_MAX); |
28e5dec8 JH |
1867 | return IS_NUMBER_OVERFLOW_UV; |
1868 | } | |
c2988b20 NC |
1869 | (void)SvIOKp_on(sv); |
1870 | (void)SvNOK_on(sv); | |
1871 | /* Can't use strtol etc to convert this string. (See truth table in | |
1872 | sv_2iv */ | |
1873 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
45977657 | 1874 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
1875 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
1876 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
1877 | } else { | |
1878 | /* Integer is imprecise. NOK, IOKp */ | |
1879 | } | |
1880 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
1881 | } | |
1882 | SvIsUV_on(sv); | |
607fa7f2 | 1883 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
1884 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { |
1885 | if (SvUVX(sv) == UV_MAX) { | |
1886 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
1887 | possibly be preserved by NV. Hence, it must be overflow. | |
1888 | NOK, IOKp */ | |
1889 | return IS_NUMBER_OVERFLOW_UV; | |
1890 | } | |
1891 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
1892 | } else { | |
1893 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 1894 | } |
c2988b20 | 1895 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 1896 | } |
645c22ef DM |
1897 | #endif /* !NV_PRESERVES_UV*/ |
1898 | ||
af359546 NC |
1899 | STATIC bool |
1900 | S_sv_2iuv_common(pTHX_ SV *sv) { | |
97aff369 | 1901 | dVAR; |
af359546 | 1902 | if (SvNOKp(sv)) { |
28e5dec8 JH |
1903 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
1904 | * without also getting a cached IV/UV from it at the same time | |
1905 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
af359546 NC |
1906 | * IV or UV at same time to avoid this. */ |
1907 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
25da4f38 IZ |
1908 | |
1909 | if (SvTYPE(sv) == SVt_NV) | |
1910 | sv_upgrade(sv, SVt_PVNV); | |
1911 | ||
28e5dec8 JH |
1912 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
1913 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
1914 | certainly cast into the IV range at IV_MAX, whereas the correct | |
1915 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
1916 | cases go to UV */ | |
cab190d4 JD |
1917 | #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan) |
1918 | if (Perl_isnan(SvNVX(sv))) { | |
1919 | SvUV_set(sv, 0); | |
1920 | SvIsUV_on(sv); | |
fdbe6d7c | 1921 | return FALSE; |
cab190d4 | 1922 | } |
cab190d4 | 1923 | #endif |
28e5dec8 | 1924 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { |
45977657 | 1925 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
1926 | if (SvNVX(sv) == (NV) SvIVX(sv) |
1927 | #ifndef NV_PRESERVES_UV | |
1928 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
1929 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
1930 | /* Don't flag it as "accurately an integer" if the number | |
1931 | came from a (by definition imprecise) NV operation, and | |
1932 | we're outside the range of NV integer precision */ | |
1933 | #endif | |
1934 | ) { | |
1935 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
1936 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 1937 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
1938 | PTR2UV(sv), |
1939 | SvNVX(sv), | |
1940 | SvIVX(sv))); | |
1941 | ||
1942 | } else { | |
1943 | /* IV not precise. No need to convert from PV, as NV | |
1944 | conversion would already have cached IV if it detected | |
1945 | that PV->IV would be better than PV->NV->IV | |
1946 | flags already correct - don't set public IOK. */ | |
1947 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 1948 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
1949 | PTR2UV(sv), |
1950 | SvNVX(sv), | |
1951 | SvIVX(sv))); | |
1952 | } | |
1953 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
1954 | but the cast (NV)IV_MIN rounds to a the value less (more | |
1955 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
1956 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
1957 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
1958 | (NV)UVX == NVX are both true, but the values differ. :-( | |
1959 | Hopefully for 2s complement IV_MIN is something like | |
1960 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 1961 | } |
25da4f38 | 1962 | else { |
607fa7f2 | 1963 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
1964 | if ( |
1965 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
1966 | #ifndef NV_PRESERVES_UV | |
1967 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
1968 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
1969 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
1970 | /* Don't flag it as "accurately an integer" if the number | |
1971 | came from a (by definition imprecise) NV operation, and | |
1972 | we're outside the range of NV integer precision */ | |
1973 | #endif | |
1974 | ) | |
1975 | SvIOK_on(sv); | |
25da4f38 | 1976 | SvIsUV_on(sv); |
1c846c1f | 1977 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 1978 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 1979 | PTR2UV(sv), |
57def98f JH |
1980 | SvUVX(sv), |
1981 | SvUVX(sv))); | |
25da4f38 | 1982 | } |
748a9306 LW |
1983 | } |
1984 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 1985 | UV value; |
504618e9 | 1986 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
af359546 | 1987 | /* We want to avoid a possible problem when we cache an IV/ a UV which |
25da4f38 | 1988 | may be later translated to an NV, and the resulting NV is not |
c2988b20 NC |
1989 | the same as the direct translation of the initial string |
1990 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
1991 | be careful to ensure that the value with the .456 is around if the | |
1992 | NV value is requested in the future). | |
1c846c1f | 1993 | |
af359546 | 1994 | This means that if we cache such an IV/a UV, we need to cache the |
25da4f38 | 1995 | NV as well. Moreover, we trade speed for space, and do not |
28e5dec8 | 1996 | cache the NV if we are sure it's not needed. |
25da4f38 | 1997 | */ |
16b7a9a4 | 1998 | |
c2988b20 NC |
1999 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2000 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2001 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2002 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2003 | if (SvTYPE(sv) < SVt_PVIV) |
2004 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2005 | (void)SvIOK_on(sv); |
c2988b20 NC |
2006 | } else if (SvTYPE(sv) < SVt_PVNV) |
2007 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2008 | |
f2524eef | 2009 | /* If NVs preserve UVs then we only use the UV value if we know that |
c2988b20 NC |
2010 | we aren't going to call atof() below. If NVs don't preserve UVs |
2011 | then the value returned may have more precision than atof() will | |
2012 | return, even though value isn't perfectly accurate. */ | |
2013 | if ((numtype & (IS_NUMBER_IN_UV | |
2014 | #ifdef NV_PRESERVES_UV | |
2015 | | IS_NUMBER_NOT_INT | |
2016 | #endif | |
2017 | )) == IS_NUMBER_IN_UV) { | |
2018 | /* This won't turn off the public IOK flag if it was set above */ | |
2019 | (void)SvIOKp_on(sv); | |
2020 | ||
2021 | if (!(numtype & IS_NUMBER_NEG)) { | |
2022 | /* positive */; | |
2023 | if (value <= (UV)IV_MAX) { | |
45977657 | 2024 | SvIV_set(sv, (IV)value); |
c2988b20 | 2025 | } else { |
af359546 | 2026 | /* it didn't overflow, and it was positive. */ |
607fa7f2 | 2027 | SvUV_set(sv, value); |
c2988b20 NC |
2028 | SvIsUV_on(sv); |
2029 | } | |
2030 | } else { | |
2031 | /* 2s complement assumption */ | |
2032 | if (value <= (UV)IV_MIN) { | |
45977657 | 2033 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2034 | } else { |
2035 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2036 | I'm assuming it will be rare. */ |
c2988b20 NC |
2037 | if (SvTYPE(sv) < SVt_PVNV) |
2038 | sv_upgrade(sv, SVt_PVNV); | |
2039 | SvNOK_on(sv); | |
2040 | SvIOK_off(sv); | |
2041 | SvIOKp_on(sv); | |
9d6ce603 | 2042 | SvNV_set(sv, -(NV)value); |
45977657 | 2043 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2044 | } |
2045 | } | |
2046 | } | |
2047 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2048 | will be in the previous block to set the IV slot, and the next | |
2049 | block to set the NV slot. So no else here. */ | |
2050 | ||
2051 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2052 | != IS_NUMBER_IN_UV) { | |
2053 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
3f7c398e | 2054 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 | 2055 | |
c2988b20 NC |
2056 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2057 | not_a_number(sv); | |
28e5dec8 | 2058 | |
65202027 | 2059 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2060 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2061 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2062 | #else |
1779d84d | 2063 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2064 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2065 | #endif |
28e5dec8 | 2066 | |
28e5dec8 | 2067 | #ifdef NV_PRESERVES_UV |
af359546 NC |
2068 | (void)SvIOKp_on(sv); |
2069 | (void)SvNOK_on(sv); | |
2070 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
2071 | SvIV_set(sv, I_V(SvNVX(sv))); | |
2072 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { | |
2073 | SvIOK_on(sv); | |
2074 | } else { | |
6f207bd3 | 2075 | NOOP; /* Integer is imprecise. NOK, IOKp */ |
af359546 NC |
2076 | } |
2077 | /* UV will not work better than IV */ | |
2078 | } else { | |
2079 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2080 | SvIsUV_on(sv); | |
2081 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
2082 | SvUV_set(sv, UV_MAX); | |
af359546 NC |
2083 | } else { |
2084 | SvUV_set(sv, U_V(SvNVX(sv))); | |
2085 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs | |
2086 | NV preservse UV so can do correct comparison. */ | |
2087 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2088 | SvIOK_on(sv); | |
af359546 | 2089 | } else { |
6f207bd3 | 2090 | NOOP; /* Integer is imprecise. NOK, IOKp, is UV */ |
af359546 NC |
2091 | } |
2092 | } | |
4b0c9573 | 2093 | SvIsUV_on(sv); |
af359546 | 2094 | } |
28e5dec8 | 2095 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2096 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2097 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
af359546 | 2098 | /* The IV/UV slot will have been set from value returned by |
c2988b20 NC |
2099 | grok_number above. The NV slot has just been set using |
2100 | Atof. */ | |
560b0c46 | 2101 | SvNOK_on(sv); |
c2988b20 NC |
2102 | assert (SvIOKp(sv)); |
2103 | } else { | |
2104 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2105 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2106 | /* Small enough to preserve all bits. */ | |
2107 | (void)SvIOKp_on(sv); | |
2108 | SvNOK_on(sv); | |
45977657 | 2109 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2110 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
2111 | SvIOK_on(sv); | |
2112 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2113 | this NV is in the preserved range, therefore: */ | |
2114 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2115 | < (UV)IV_MAX)) { | |
32fdb065 | 2116 | 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 |
2117 | } |
2118 | } else { | |
2119 | /* IN_UV NOT_INT | |
2120 | 0 0 already failed to read UV. | |
2121 | 0 1 already failed to read UV. | |
2122 | 1 0 you won't get here in this case. IV/UV | |
2123 | slot set, public IOK, Atof() unneeded. | |
2124 | 1 1 already read UV. | |
2125 | so there's no point in sv_2iuv_non_preserve() attempting | |
2126 | to use atol, strtol, strtoul etc. */ | |
40a17c4c | 2127 | sv_2iuv_non_preserve (sv, numtype); |
c2988b20 NC |
2128 | } |
2129 | } | |
28e5dec8 | 2130 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2131 | } |
af359546 NC |
2132 | } |
2133 | else { | |
675c862f | 2134 | if (isGV_with_GP(sv)) |
a0933d07 | 2135 | return glob_2number((GV *)sv); |
180488f8 | 2136 | |
af359546 NC |
2137 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
2138 | if (!PL_localizing && ckWARN(WARN_UNINITIALIZED)) | |
2139 | report_uninit(sv); | |
2140 | } | |
25da4f38 IZ |
2141 | if (SvTYPE(sv) < SVt_IV) |
2142 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2143 | sv_upgrade(sv, SVt_IV); | |
af359546 NC |
2144 | /* Return 0 from the caller. */ |
2145 | return TRUE; | |
2146 | } | |
2147 | return FALSE; | |
2148 | } | |
2149 | ||
2150 | /* | |
2151 | =for apidoc sv_2iv_flags | |
2152 | ||
2153 | Return the integer value of an SV, doing any necessary string | |
2154 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. | |
2155 | Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
2156 | ||
2157 | =cut | |
2158 | */ | |
2159 | ||
2160 | IV | |
2161 | Perl_sv_2iv_flags(pTHX_ register SV *sv, I32 flags) | |
2162 | { | |
97aff369 | 2163 | dVAR; |
af359546 | 2164 | if (!sv) |
a0d0e21e | 2165 | return 0; |
cecf5685 NC |
2166 | if (SvGMAGICAL(sv) || (SvTYPE(sv) == SVt_PVGV && SvVALID(sv))) { |
2167 | /* FBMs use the same flag bit as SVf_IVisUV, so must let them | |
50caf62e NC |
2168 | cache IVs just in case. In practice it seems that they never |
2169 | actually anywhere accessible by user Perl code, let alone get used | |
2170 | in anything other than a string context. */ | |
af359546 NC |
2171 | if (flags & SV_GMAGIC) |
2172 | mg_get(sv); | |
2173 | if (SvIOKp(sv)) | |
2174 | return SvIVX(sv); | |
2175 | if (SvNOKp(sv)) { | |
2176 | return I_V(SvNVX(sv)); | |
2177 | } | |
71c558c3 NC |
2178 | if (SvPOKp(sv) && SvLEN(sv)) { |
2179 | UV value; | |
2180 | const int numtype | |
2181 | = grok_number(SvPVX_const(sv), SvCUR(sv), &value); | |
2182 | ||
2183 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2184 | == IS_NUMBER_IN_UV) { | |
2185 | /* It's definitely an integer */ | |
2186 | if (numtype & IS_NUMBER_NEG) { | |
2187 | if (value < (UV)IV_MIN) | |
2188 | return -(IV)value; | |
2189 | } else { | |
2190 | if (value < (UV)IV_MAX) | |
2191 | return (IV)value; | |
2192 | } | |
2193 | } | |
2194 | if (!numtype) { | |
2195 | if (ckWARN(WARN_NUMERIC)) | |
2196 | not_a_number(sv); | |
2197 | } | |
2198 | return I_V(Atof(SvPVX_const(sv))); | |
2199 | } | |
1c7ff15e NC |
2200 | if (SvROK(sv)) { |
2201 | goto return_rok; | |
af359546 | 2202 | } |
1c7ff15e NC |
2203 | assert(SvTYPE(sv) >= SVt_PVMG); |
2204 | /* This falls through to the report_uninit inside S_sv_2iuv_common. */ | |
4cb1ec55 | 2205 | } else if (SvTHINKFIRST(sv)) { |
af359546 | 2206 | if (SvROK(sv)) { |
1c7ff15e | 2207 | return_rok: |
af359546 NC |
2208 | if (SvAMAGIC(sv)) { |
2209 | SV * const tmpstr=AMG_CALLun(sv,numer); | |
2210 | if (tmpstr && (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { | |
2211 | return SvIV(tmpstr); | |
2212 | } | |
2213 | } | |
2214 | return PTR2IV(SvRV(sv)); | |
2215 | } | |
2216 | if (SvIsCOW(sv)) { | |
2217 | sv_force_normal_flags(sv, 0); | |
2218 | } | |
2219 | if (SvREADONLY(sv) && !SvOK(sv)) { | |
2220 | if (ckWARN(WARN_UNINITIALIZED)) | |
2221 | report_uninit(sv); | |
2222 | return 0; | |
2223 | } | |
2224 | } | |
2225 | if (!SvIOKp(sv)) { | |
2226 | if (S_sv_2iuv_common(aTHX_ sv)) | |
2227 | return 0; | |
79072805 | 2228 | } |
1d7c1841 GS |
2229 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2230 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2231 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2232 | } |
2233 | ||
645c22ef | 2234 | /* |
891f9566 | 2235 | =for apidoc sv_2uv_flags |
645c22ef DM |
2236 | |
2237 | Return the unsigned integer value of an SV, doing any necessary string | |
891f9566 YST |
2238 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. |
2239 | Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros. | |
645c22ef DM |
2240 | |
2241 | =cut | |
2242 | */ | |
2243 | ||
ff68c719 | 2244 | UV |
891f9566 | 2245 | Perl_sv_2uv_flags(pTHX_ register SV *sv, I32 flags) |
ff68c719 | 2246 | { |
97aff369 | 2247 | dVAR; |
ff68c719 | 2248 | if (!sv) |
2249 | return 0; | |
cecf5685 NC |
2250 | if (SvGMAGICAL(sv) || (SvTYPE(sv) == SVt_PVGV && SvVALID(sv))) { |
2251 | /* FBMs use the same flag bit as SVf_IVisUV, so must let them | |
50caf62e | 2252 | cache IVs just in case. */ |
891f9566 YST |
2253 | if (flags & SV_GMAGIC) |
2254 | mg_get(sv); | |
ff68c719 | 2255 | if (SvIOKp(sv)) |
2256 | return SvUVX(sv); | |
2257 | if (SvNOKp(sv)) | |
2258 | return U_V(SvNVX(sv)); | |
71c558c3 NC |
2259 | if (SvPOKp(sv) && SvLEN(sv)) { |
2260 | UV value; | |
2261 | const int numtype | |
2262 | = grok_number(SvPVX_const(sv), SvCUR(sv), &value); | |
2263 | ||
2264 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2265 | == IS_NUMBER_IN_UV) { | |
2266 | /* It's definitely an integer */ | |
2267 | if (!(numtype & IS_NUMBER_NEG)) | |
2268 | return value; | |
2269 | } | |
2270 | if (!numtype) { | |
2271 | if (ckWARN(WARN_NUMERIC)) | |
2272 | not_a_number(sv); | |
2273 | } | |
2274 | return U_V(Atof(SvPVX_const(sv))); | |
2275 | } | |
1c7ff15e NC |
2276 | if (SvROK(sv)) { |
2277 | goto return_rok; | |
3fe9a6f1 | 2278 | } |
1c7ff15e NC |
2279 | assert(SvTYPE(sv) >= SVt_PVMG); |
2280 | /* This falls through to the report_uninit inside S_sv_2iuv_common. */ | |
4cb1ec55 | 2281 | } else if (SvTHINKFIRST(sv)) { |
ff68c719 | 2282 | if (SvROK(sv)) { |
1c7ff15e | 2283 | return_rok: |
deb46114 NC |
2284 | if (SvAMAGIC(sv)) { |
2285 | SV *const tmpstr = AMG_CALLun(sv,numer); | |
2286 | if (tmpstr && (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { | |
2287 | return SvUV(tmpstr); | |
2288 | } | |
2289 | } | |
2290 | return PTR2UV(SvRV(sv)); | |
ff68c719 | 2291 | } |
765f542d NC |
2292 | if (SvIsCOW(sv)) { |
2293 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2294 | } |
0336b60e | 2295 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2296 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2297 | report_uninit(sv); |
ff68c719 | 2298 | return 0; |
2299 | } | |
2300 | } | |
af359546 NC |
2301 | if (!SvIOKp(sv)) { |
2302 | if (S_sv_2iuv_common(aTHX_ sv)) | |
2303 | return 0; | |
ff68c719 | 2304 | } |
25da4f38 | 2305 | |
1d7c1841 GS |
2306 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
2307 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 2308 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 2309 | } |
2310 | ||
645c22ef DM |
2311 | /* |
2312 | =for apidoc sv_2nv | |
2313 | ||
2314 | Return the num value of an SV, doing any necessary string or integer | |
2315 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
2316 | macros. | |
2317 | ||
2318 | =cut | |
2319 | */ | |
2320 | ||
65202027 | 2321 | NV |
864dbfa3 | 2322 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 | 2323 | { |
97aff369 | 2324 | dVAR; |
79072805 LW |
2325 | if (!sv) |
2326 | return 0.0; | |
cecf5685 NC |
2327 | if (SvGMAGICAL(sv) || (SvTYPE(sv) == SVt_PVGV && SvVALID(sv))) { |
2328 | /* FBMs use the same flag bit as SVf_IVisUV, so must let them | |
50caf62e | 2329 | cache IVs just in case. */ |
463ee0b2 LW |
2330 | mg_get(sv); |
2331 | if (SvNOKp(sv)) | |
2332 | return SvNVX(sv); | |
0aa395f8 | 2333 | if ((SvPOKp(sv) && SvLEN(sv)) && !SvIOKp(sv)) { |
041457d9 | 2334 | if (!SvIOKp(sv) && ckWARN(WARN_NUMERIC) && |
504618e9 | 2335 | !grok_number(SvPVX_const(sv), SvCUR(sv), NULL)) |
a0d0e21e | 2336 | not_a_number(sv); |
3f7c398e | 2337 | return Atof(SvPVX_const(sv)); |
a0d0e21e | 2338 | } |
25da4f38 | 2339 | if (SvIOKp(sv)) { |
1c846c1f | 2340 | if (SvIsUV(sv)) |
65202027 | 2341 | return (NV)SvUVX(sv); |
25da4f38 | 2342 | else |
65202027 | 2343 | return (NV)SvIVX(sv); |
47a72cb8 NC |
2344 | } |
2345 | if (SvROK(sv)) { | |
2346 | goto return_rok; | |
2347 | } | |
2348 | assert(SvTYPE(sv) >= SVt_PVMG); | |
2349 | /* This falls through to the report_uninit near the end of the | |
2350 | function. */ | |
2351 | } else if (SvTHINKFIRST(sv)) { | |
a0d0e21e | 2352 | if (SvROK(sv)) { |
47a72cb8 | 2353 | return_rok: |
deb46114 NC |
2354 | if (SvAMAGIC(sv)) { |
2355 | SV *const tmpstr = AMG_CALLun(sv,numer); | |
2356 | if (tmpstr && (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { | |
2357 | return SvNV(tmpstr); | |
2358 | } | |
2359 | } | |
2360 | return PTR2NV(SvRV(sv)); | |
a0d0e21e | 2361 | } |
765f542d NC |
2362 | if (SvIsCOW(sv)) { |
2363 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2364 | } |
0336b60e | 2365 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 2366 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2367 | report_uninit(sv); |
ed6116ce LW |
2368 | return 0.0; |
2369 | } | |
79072805 LW |
2370 | } |
2371 | if (SvTYPE(sv) < SVt_NV) { | |
7e25a7e9 NC |
2372 | /* The logic to use SVt_PVNV if necessary is in sv_upgrade. */ |
2373 | sv_upgrade(sv, SVt_NV); | |
906f284f | 2374 | #ifdef USE_LONG_DOUBLE |
097ee67d | 2375 | DEBUG_c({ |
f93f4e46 | 2376 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2377 | PerlIO_printf(Perl_debug_log, |
2378 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
2379 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2380 | RESTORE_NUMERIC_LOCAL(); |
2381 | }); | |
65202027 | 2382 | #else |
572bbb43 | 2383 | DEBUG_c({ |
f93f4e46 | 2384 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2385 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 2386 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2387 | RESTORE_NUMERIC_LOCAL(); |
2388 | }); | |
572bbb43 | 2389 | #endif |
79072805 LW |
2390 | } |
2391 | else if (SvTYPE(sv) < SVt_PVNV) | |
2392 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
2393 | if (SvNOKp(sv)) { |
2394 | return SvNVX(sv); | |
61604483 | 2395 | } |
59d8ce62 | 2396 | if (SvIOKp(sv)) { |
9d6ce603 | 2397 | SvNV_set(sv, SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv)); |
28e5dec8 JH |
2398 | #ifdef NV_PRESERVES_UV |
2399 | SvNOK_on(sv); | |
2400 | #else | |
2401 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
2402 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
2403 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
2404 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
2405 | SvNOK_on(sv); | |
2406 | else | |
2407 | SvNOKp_on(sv); | |
2408 | #endif | |
93a17b20 | 2409 | } |
748a9306 | 2410 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 2411 | UV value; |
3f7c398e | 2412 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
041457d9 | 2413 | if (!SvIOKp(sv) && !numtype && ckWARN(WARN_NUMERIC)) |
a0d0e21e | 2414 | not_a_number(sv); |
28e5dec8 | 2415 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
2416 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2417 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2418 | /* It's definitely an integer */ |
9d6ce603 | 2419 | SvNV_set(sv, (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value); |
c2988b20 | 2420 | } else |
3f7c398e | 2421 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2422 | SvNOK_on(sv); |
2423 | #else | |
3f7c398e | 2424 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2425 | /* Only set the public NV OK flag if this NV preserves the value in |
2426 | the PV at least as well as an IV/UV would. | |
2427 | Not sure how to do this 100% reliably. */ | |
2428 | /* if that shift count is out of range then Configure's test is | |
2429 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
2430 | UV_BITS */ | |
2431 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 2432 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 2433 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
2434 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
2435 | /* Can't use strtol etc to convert this string, so don't try. | |
2436 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
2437 | SvNOK_on(sv); | |
2438 | } else { | |
2439 | /* value has been set. It may not be precise. */ | |
2440 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
2441 | /* 2s complement assumption for (UV)IV_MIN */ | |
2442 | SvNOK_on(sv); /* Integer is too negative. */ | |
2443 | } else { | |
2444 | SvNOKp_on(sv); | |
2445 | SvIOKp_on(sv); | |
6fa402ec | 2446 | |
c2988b20 | 2447 | if (numtype & IS_NUMBER_NEG) { |
45977657 | 2448 | SvIV_set(sv, -(IV)value); |
c2988b20 | 2449 | } else if (value <= (UV)IV_MAX) { |
45977657 | 2450 | SvIV_set(sv, (IV)value); |
c2988b20 | 2451 | } else { |
607fa7f2 | 2452 | SvUV_set(sv, value); |
c2988b20 NC |
2453 | SvIsUV_on(sv); |
2454 | } | |
2455 | ||
2456 | if (numtype & IS_NUMBER_NOT_INT) { | |
2457 | /* I believe that even if the original PV had decimals, | |
2458 | they are lost beyond the limit of the FP precision. | |
2459 | However, neither is canonical, so both only get p | |
2460 | flags. NWC, 2000/11/25 */ | |
2461 | /* Both already have p flags, so do nothing */ | |
2462 | } else { | |
66a1b24b | 2463 | const NV nv = SvNVX(sv); |
c2988b20 NC |
2464 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { |
2465 | if (SvIVX(sv) == I_V(nv)) { | |
2466 | SvNOK_on(sv); | |
c2988b20 | 2467 | } else { |
c2988b20 NC |
2468 | /* It had no "." so it must be integer. */ |
2469 | } | |
00b6aa41 | 2470 | SvIOK_on(sv); |
c2988b20 NC |
2471 | } else { |
2472 | /* between IV_MAX and NV(UV_MAX). | |
2473 | Could be slightly > UV_MAX */ | |
6fa402ec | 2474 | |
c2988b20 NC |
2475 | if (numtype & IS_NUMBER_NOT_INT) { |
2476 | /* UV and NV both imprecise. */ | |
2477 | } else { | |
66a1b24b | 2478 | const UV nv_as_uv = U_V(nv); |
c2988b20 NC |
2479 | |
2480 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
2481 | SvNOK_on(sv); | |
c2988b20 | 2482 | } |
00b6aa41 | 2483 | SvIOK_on(sv); |
c2988b20 NC |
2484 | } |
2485 | } | |
2486 | } | |
2487 | } | |
2488 | } | |
28e5dec8 | 2489 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 2490 | } |
79072805 | 2491 | else { |
f7877b28 | 2492 | if (isGV_with_GP(sv)) { |
19f6321d | 2493 | glob_2number((GV *)sv); |
180488f8 NC |
2494 | return 0.0; |
2495 | } | |
2496 | ||
041457d9 | 2497 | if (!PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP) && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2498 | report_uninit(sv); |
7e25a7e9 NC |
2499 | assert (SvTYPE(sv) >= SVt_NV); |
2500 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2501 | /* XXX Ilya implies that this is a bug in callers that assume this | |
2502 | and ideally should be fixed. */ | |
a0d0e21e | 2503 | return 0.0; |
79072805 | 2504 | } |
572bbb43 | 2505 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 2506 | DEBUG_c({ |
f93f4e46 | 2507 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2508 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
2509 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2510 | RESTORE_NUMERIC_LOCAL(); |
2511 | }); | |
65202027 | 2512 | #else |
572bbb43 | 2513 | DEBUG_c({ |
f93f4e46 | 2514 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2515 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 2516 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2517 | RESTORE_NUMERIC_LOCAL(); |
2518 | }); | |
572bbb43 | 2519 | #endif |
463ee0b2 | 2520 | return SvNVX(sv); |
79072805 LW |
2521 | } |
2522 | ||
645c22ef DM |
2523 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
2524 | * UV as a string towards the end of buf, and return pointers to start and | |
2525 | * end of it. | |
2526 | * | |
2527 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
2528 | */ | |
2529 | ||
864dbfa3 | 2530 | static char * |
aec46f14 | 2531 | S_uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
25da4f38 | 2532 | { |
25da4f38 | 2533 | char *ptr = buf + TYPE_CHARS(UV); |
823a54a3 | 2534 | char * const ebuf = ptr; |
25da4f38 | 2535 | int sign; |
25da4f38 IZ |
2536 | |
2537 | if (is_uv) | |
2538 | sign = 0; | |
2539 | else if (iv >= 0) { | |
2540 | uv = iv; | |
2541 | sign = 0; | |
2542 | } else { | |
2543 | uv = -iv; | |
2544 | sign = 1; | |
2545 | } | |
2546 | do { | |
eb160463 | 2547 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
2548 | } while (uv /= 10); |
2549 | if (sign) | |
2550 | *--ptr = '-'; | |
2551 | *peob = ebuf; | |
2552 | return ptr; | |
2553 | } | |
2554 | ||
645c22ef DM |
2555 | /* |
2556 | =for apidoc sv_2pv_flags | |
2557 | ||
ff276b08 | 2558 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
2559 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
2560 | if necessary. | |
2561 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
2562 | usually end up here too. | |
2563 | ||
2564 | =cut | |
2565 | */ | |
2566 | ||
8d6d96c1 HS |
2567 | char * |
2568 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
2569 | { | |
97aff369 | 2570 | dVAR; |
79072805 | 2571 | register char *s; |
79072805 | 2572 | |
463ee0b2 | 2573 | if (!sv) { |
cdb061a3 NC |
2574 | if (lp) |
2575 | *lp = 0; | |
73d840c0 | 2576 | return (char *)""; |
463ee0b2 | 2577 | } |
8990e307 | 2578 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
2579 | if (flags & SV_GMAGIC) |
2580 | mg_get(sv); | |
463ee0b2 | 2581 | if (SvPOKp(sv)) { |
cdb061a3 NC |
2582 | if (lp) |
2583 | *lp = SvCUR(sv); | |
10516c54 NC |
2584 | if (flags & SV_MUTABLE_RETURN) |
2585 | return SvPVX_mutable(sv); | |
4d84ee25 NC |
2586 | if (flags & SV_CONST_RETURN) |
2587 | return (char *)SvPVX_const(sv); | |
463ee0b2 LW |
2588 | return SvPVX(sv); |
2589 | } | |
75dfc8ec NC |
2590 | if (SvIOKp(sv) || SvNOKp(sv)) { |
2591 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ | |
75dfc8ec NC |
2592 | STRLEN len; |
2593 | ||
2594 | if (SvIOKp(sv)) { | |
e80fed9d | 2595 | len = SvIsUV(sv) |
d9fad198 JH |
2596 | ? my_snprintf(tbuf, sizeof(tbuf), "%"UVuf, (UV)SvUVX(sv)) |
2597 | : my_snprintf(tbuf, sizeof(tbuf), "%"IVdf, (IV)SvIVX(sv)); | |
75dfc8ec | 2598 | } else { |
e8ada2d0 NC |
2599 | Gconvert(SvNVX(sv), NV_DIG, 0, tbuf); |
2600 | len = strlen(tbuf); | |
75dfc8ec | 2601 | } |
b5b886f0 NC |
2602 | assert(!SvROK(sv)); |
2603 | { | |
75dfc8ec NC |
2604 | dVAR; |
2605 | ||
2606 | #ifdef FIXNEGATIVEZERO | |
e8ada2d0 NC |
2607 | if (len == 2 && tbuf[0] == '-' && tbuf[1] == '0') { |
2608 | tbuf[0] = '0'; | |
2609 | tbuf[1] = 0; | |
75dfc8ec NC |
2610 | len = 1; |
2611 | } | |
2612 | #endif | |
2613 | SvUPGRADE(sv, SVt_PV); | |
2614 | if (lp) | |
2615 | *lp = len; | |
2616 | s = SvGROW_mutable(sv, len + 1); | |
2617 | SvCUR_set(sv, len); | |
2618 | SvPOKp_on(sv); | |
10edeb5d | 2619 | return (char*)memcpy(s, tbuf, len + 1); |
75dfc8ec | 2620 | } |
463ee0b2 | 2621 | } |
1c7ff15e NC |
2622 | if (SvROK(sv)) { |
2623 | goto return_rok; | |
2624 | } | |
2625 | assert(SvTYPE(sv) >= SVt_PVMG); | |
2626 | /* This falls through to the report_uninit near the end of the | |
2627 | function. */ | |
2628 | } else if (SvTHINKFIRST(sv)) { | |
ed6116ce | 2629 | if (SvROK(sv)) { |
1c7ff15e | 2630 | return_rok: |
deb46114 NC |
2631 | if (SvAMAGIC(sv)) { |
2632 | SV *const tmpstr = AMG_CALLun(sv,string); | |
2633 | if (tmpstr && (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { | |
2634 | /* Unwrap this: */ | |
2635 | /* char *pv = lp ? SvPV(tmpstr, *lp) : SvPV_nolen(tmpstr); | |
2636 | */ | |
2637 | ||
2638 | char *pv; | |
2639 | if ((SvFLAGS(tmpstr) & (SVf_POK)) == SVf_POK) { | |
2640 | if (flags & SV_CONST_RETURN) { | |
2641 | pv = (char *) SvPVX_const(tmpstr); | |
2642 | } else { | |
2643 | pv = (flags & SV_MUTABLE_RETURN) | |
2644 | ? SvPVX_mutable(tmpstr) : SvPVX(tmpstr); | |
2645 | } | |
2646 | if (lp) | |
2647 | *lp = SvCUR(tmpstr); | |
50adf7d2 | 2648 | } else { |
deb46114 | 2649 | pv = sv_2pv_flags(tmpstr, lp, flags); |
50adf7d2 | 2650 | } |
deb46114 NC |
2651 | if (SvUTF8(tmpstr)) |
2652 | SvUTF8_on(sv); | |
2653 | else | |
2654 | SvUTF8_off(sv); | |
2655 | return pv; | |
50adf7d2 | 2656 | } |
deb46114 NC |
2657 | } |
2658 | { | |
fafee734 NC |
2659 | STRLEN len; |
2660 | char *retval; | |
2661 | char *buffer; | |
f9277f47 | 2662 | MAGIC *mg; |
d8eae41e NC |
2663 | const SV *const referent = (SV*)SvRV(sv); |
2664 | ||
2665 | if (!referent) { | |
fafee734 NC |
2666 | len = 7; |
2667 | retval = buffer = savepvn("NULLREF", len); | |
042dae7a NC |
2668 | } else if (SvTYPE(referent) == SVt_PVMG |
2669 | && ((SvFLAGS(referent) & | |
2670 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) | |
2671 | == (SVs_OBJECT|SVs_SMG)) | |
de8c5301 YO |
2672 | && (mg = mg_find(referent, PERL_MAGIC_qr))) |
2673 | { | |
2674 | char *str = NULL; | |
2675 | I32 haseval = 0; | |
60df1e07 | 2676 | U32 flags = 0; |
de8c5301 YO |
2677 | (str) = CALLREG_AS_STR(mg,lp,&flags,&haseval); |
2678 | if (flags & 1) | |
2679 | SvUTF8_on(sv); | |
2680 | else | |
2681 | SvUTF8_off(sv); | |
2682 | PL_reginterp_cnt += haseval; | |
2683 | return str; | |
d8eae41e NC |
2684 | } else { |
2685 | const char *const typestr = sv_reftype(referent, 0); | |
fafee734 NC |
2686 | const STRLEN typelen = strlen(typestr); |
2687 | UV addr = PTR2UV(referent); | |
2688 | const char *stashname = NULL; | |
2689 | STRLEN stashnamelen = 0; /* hush, gcc */ | |
2690 | const char *buffer_end; | |
d8eae41e | 2691 | |
d8eae41e | 2692 | if (SvOBJECT(referent)) { |
fafee734 NC |
2693 | const HEK *const name = HvNAME_HEK(SvSTASH(referent)); |
2694 | ||
2695 | if (name) { | |
2696 | stashname = HEK_KEY(name); | |
2697 | stashnamelen = HEK_LEN(name); | |
2698 | ||
2699 | if (HEK_UTF8(name)) { | |
2700 | SvUTF8_on(sv); | |
2701 | } else { | |
2702 | SvUTF8_off(sv); | |
2703 | } | |
2704 | } else { | |
2705 | stashname = "__ANON__"; | |
2706 | stashnamelen = 8; | |
2707 | } | |
2708 | len = stashnamelen + 1 /* = */ + typelen + 3 /* (0x */ | |
2709 | + 2 * sizeof(UV) + 2 /* )\0 */; | |
2710 | } else { | |
2711 | len = typelen + 3 /* (0x */ | |
2712 | + 2 * sizeof(UV) + 2 /* )\0 */; | |
d8eae41e | 2713 | } |
fafee734 NC |
2714 | |
2715 | Newx(buffer, len, char); | |
2716 | buffer_end = retval = buffer + len; | |
2717 | ||
2718 | /* Working backwards */ | |
2719 | *--retval = '\0'; | |
2720 | *--retval = ')'; | |
2721 | do { | |
2722 | *--retval = PL_hexdigit[addr & 15]; | |
2723 | } while (addr >>= 4); | |
2724 | *--retval = 'x'; | |
2725 | *--retval = '0'; | |
2726 | *--retval = '('; | |
2727 | ||
2728 | retval -= typelen; | |
2729 | memcpy(retval, typestr, typelen); | |
2730 | ||
2731 | if (stashname) { | |
2732 | *--retval = '='; | |
2733 | retval -= stashnamelen; | |
2734 | memcpy(retval, stashname, stashnamelen); | |
2735 | } | |
2736 | /* retval may not neccesarily have reached the start of the | |
2737 | buffer here. */ | |
2738 | assert (retval >= buffer); | |
2739 | ||
2740 | len = buffer_end - retval - 1; /* -1 for that \0 */ | |
c080367d | 2741 | } |
042dae7a | 2742 | if (lp) |
fafee734 NC |
2743 | *lp = len; |
2744 | SAVEFREEPV(buffer); | |
2745 | return retval; | |
463ee0b2 | 2746 | } |
79072805 | 2747 | } |
0336b60e | 2748 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2749 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2750 | report_uninit(sv); |
cdb061a3 NC |
2751 | if (lp) |
2752 | *lp = 0; | |
73d840c0 | 2753 | return (char *)""; |
79072805 | 2754 | } |
79072805 | 2755 | } |
28e5dec8 JH |
2756 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
2757 | /* I'm assuming that if both IV and NV are equally valid then | |
2758 | converting the IV is going to be more efficient */ | |
e1ec3a88 | 2759 | const U32 isUIOK = SvIsUV(sv); |
28e5dec8 JH |
2760 | char buf[TYPE_CHARS(UV)]; |
2761 | char *ebuf, *ptr; | |
2762 | ||
2763 | if (SvTYPE(sv) < SVt_PVIV) | |
2764 | sv_upgrade(sv, SVt_PVIV); | |
4ea1d550 | 2765 | ptr = uiv_2buf(buf, SvIVX(sv), SvUVX(sv), isUIOK, &ebuf); |
5902b6a9 NC |
2766 | /* inlined from sv_setpvn */ |
2767 | SvGROW_mutable(sv, (STRLEN)(ebuf - ptr + 1)); | |
4d84ee25 | 2768 | Move(ptr,SvPVX_mutable(sv),ebuf - ptr,char); |
28e5dec8 JH |
2769 | SvCUR_set(sv, ebuf - ptr); |
2770 | s = SvEND(sv); | |
2771 | *s = '\0'; | |
28e5dec8 JH |
2772 | } |
2773 | else if (SvNOKp(sv)) { | |
c81271c3 | 2774 | const int olderrno = errno; |
79072805 LW |
2775 | if (SvTYPE(sv) < SVt_PVNV) |
2776 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 2777 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
5902b6a9 | 2778 | s = SvGROW_mutable(sv, NV_DIG + 20); |
c81271c3 | 2779 | /* some Xenix systems wipe out errno here */ |
79072805 | 2780 | #ifdef apollo |
463ee0b2 | 2781 | if (SvNVX(sv) == 0.0) |
d1307786 | 2782 | my_strlcpy(s, "0", SvLEN(sv)); |
79072805 LW |
2783 | else |
2784 | #endif /*apollo*/ | |
bbce6d69 | 2785 | { |
2d4389e4 | 2786 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 2787 | } |
79072805 | 2788 | errno = olderrno; |
a0d0e21e LW |
2789 | #ifdef FIXNEGATIVEZERO |
2790 | if (*s == '-' && s[1] == '0' && !s[2]) | |
d1307786 | 2791 | my_strlcpy(s, "0", SvLEN(s)); |
a0d0e21e | 2792 | #endif |
79072805 LW |
2793 | while (*s) s++; |
2794 | #ifdef hcx | |
2795 | if (s[-1] == '.') | |
46fc3d4c | 2796 | *--s = '\0'; |
79072805 LW |
2797 | #endif |
2798 | } | |
79072805 | 2799 | else { |
675c862f | 2800 | if (isGV_with_GP(sv)) |
19f6321d | 2801 | return glob_2pv((GV *)sv, lp); |
180488f8 | 2802 | |
041457d9 | 2803 | if (!PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP) && ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2804 | report_uninit(sv); |
cdb061a3 | 2805 | if (lp) |
00b6aa41 | 2806 | *lp = 0; |
25da4f38 IZ |
2807 | if (SvTYPE(sv) < SVt_PV) |
2808 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2809 | sv_upgrade(sv, SVt_PV); | |
73d840c0 | 2810 | return (char *)""; |
79072805 | 2811 | } |
cdb061a3 | 2812 | { |
823a54a3 | 2813 | const STRLEN len = s - SvPVX_const(sv); |
cdb061a3 NC |
2814 | if (lp) |
2815 | *lp = len; | |
2816 | SvCUR_set(sv, len); | |
2817 | } | |
79072805 | 2818 | SvPOK_on(sv); |
1d7c1841 | 2819 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 2820 | PTR2UV(sv),SvPVX_const(sv))); |
4d84ee25 NC |
2821 | if (flags & SV_CONST_RETURN) |
2822 | return (char *)SvPVX_const(sv); | |
10516c54 NC |
2823 | if (flags & SV_MUTABLE_RETURN) |
2824 | return SvPVX_mutable(sv); | |
463ee0b2 LW |
2825 | return SvPVX(sv); |
2826 | } | |
2827 | ||
645c22ef | 2828 | /* |
6050d10e JP |
2829 | =for apidoc sv_copypv |
2830 | ||
2831 | Copies a stringified representation of the source SV into the | |
2832 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 2833 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 2834 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
2835 | sv_2pv[_flags] but operates directly on an SV instead of just the |
2836 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
2837 | would lose the UTF-8'ness of the PV. |
2838 | ||
2839 | =cut | |
2840 | */ | |
2841 | ||
2842 | void | |
2843 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
2844 | { | |
446eaa42 | 2845 | STRLEN len; |
53c1dcc0 | 2846 | const char * const s = SvPV_const(ssv,len); |
cb50f42d | 2847 | sv_setpvn(dsv,s,len); |
446eaa42 | 2848 | if (SvUTF8(ssv)) |
cb50f42d | 2849 | SvUTF8_on(dsv); |
446eaa42 | 2850 | else |
cb50f42d | 2851 | SvUTF8_off(dsv); |
6050d10e JP |
2852 | } |
2853 | ||
2854 | /* | |
645c22ef DM |
2855 | =for apidoc sv_2pvbyte |
2856 | ||
2857 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 2858 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
2859 | side-effect. |
2860 | ||
2861 | Usually accessed via the C<SvPVbyte> macro. | |
2862 | ||
2863 | =cut | |
2864 | */ | |
2865 | ||
7340a771 GS |
2866 | char * |
2867 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
2868 | { | |
0875d2fe | 2869 | sv_utf8_downgrade(sv,0); |
97972285 | 2870 | return lp ? SvPV(sv,*lp) : SvPV_nolen(sv); |
7340a771 GS |
2871 | } |
2872 | ||
645c22ef | 2873 | /* |
035cbb0e RGS |
2874 | =for apidoc sv_2pvutf8 |
2875 | ||
2876 | Return a pointer to the UTF-8-encoded representation of the SV, and set *lp | |
2877 | to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
2878 | ||
2879 | Usually accessed via the C<SvPVutf8> macro. | |
2880 | ||
2881 | =cut | |
2882 | */ | |
645c22ef | 2883 | |
7340a771 GS |
2884 | char * |
2885 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
2886 | { | |
035cbb0e RGS |
2887 | sv_utf8_upgrade(sv); |
2888 | return lp ? SvPV(sv,*lp) : SvPV_nolen(sv); | |
7340a771 | 2889 | } |
1c846c1f | 2890 | |
7ee2227d | 2891 | |
645c22ef DM |
2892 | /* |
2893 | =for apidoc sv_2bool | |
2894 | ||
2895 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 2896 | sv_true() or its macro equivalent. |
645c22ef DM |
2897 | |
2898 | =cut | |
2899 | */ | |
2900 | ||
463ee0b2 | 2901 | bool |
864dbfa3 | 2902 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 2903 | { |
97aff369 | 2904 | dVAR; |
5b295bef | 2905 | SvGETMAGIC(sv); |
463ee0b2 | 2906 | |
a0d0e21e LW |
2907 | if (!SvOK(sv)) |
2908 | return 0; | |
2909 | if (SvROK(sv)) { | |
fabdb6c0 AL |
2910 | if (SvAMAGIC(sv)) { |
2911 | SV * const tmpsv = AMG_CALLun(sv,bool_); | |
2912 | if (tmpsv && (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) | |
2913 | return (bool)SvTRUE(tmpsv); | |
2914 | } | |
2915 | return SvRV(sv) != 0; | |
a0d0e21e | 2916 | } |
463ee0b2 | 2917 | if (SvPOKp(sv)) { |
53c1dcc0 AL |
2918 | register XPV* const Xpvtmp = (XPV*)SvANY(sv); |
2919 | if (Xpvtmp && | |
339049b0 | 2920 | (*sv->sv_u.svu_pv > '0' || |
11343788 | 2921 | Xpvtmp->xpv_cur > 1 || |
339049b0 | 2922 | (Xpvtmp->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
463ee0b2 LW |
2923 | return 1; |
2924 | else | |
2925 | return 0; | |
2926 | } | |
2927 | else { | |
2928 | if (SvIOKp(sv)) | |
2929 | return SvIVX(sv) != 0; | |
2930 | else { | |
2931 | if (SvNOKp(sv)) | |
2932 | return SvNVX(sv) != 0.0; | |
180488f8 | 2933 | else { |
f7877b28 | 2934 | if (isGV_with_GP(sv)) |
180488f8 NC |
2935 | return TRUE; |
2936 | else | |
2937 | return FALSE; | |
2938 | } | |
463ee0b2 LW |
2939 | } |
2940 | } | |
79072805 LW |
2941 | } |
2942 | ||
c461cf8f JH |
2943 | /* |
2944 | =for apidoc sv_utf8_upgrade | |
2945 | ||
78ea37eb | 2946 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 2947 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
2948 | Always sets the SvUTF8 flag to avoid future validity checks even |
2949 | if all the bytes have hibit clear. | |
c461cf8f | 2950 | |
13a6c0e0 JH |
2951 | This is not as a general purpose byte encoding to Unicode interface: |
2952 | use the Encode extension for that. | |
2953 | ||
8d6d96c1 HS |
2954 | =for apidoc sv_utf8_upgrade_flags |
2955 | ||
78ea37eb | 2956 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 2957 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
2958 | Always sets the SvUTF8 flag to avoid future validity checks even |
2959 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
2960 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
2961 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
2962 | ||
13a6c0e0 JH |
2963 | This is not as a general purpose byte encoding to Unicode interface: |
2964 | use the Encode extension for that. | |
2965 | ||
8d6d96c1 HS |
2966 | =cut |
2967 | */ | |
2968 | ||
2969 | STRLEN | |
2970 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
2971 | { | |
97aff369 | 2972 | dVAR; |
808c356f RGS |
2973 | if (sv == &PL_sv_undef) |
2974 | return 0; | |
e0e62c2a NIS |
2975 | if (!SvPOK(sv)) { |
2976 | STRLEN len = 0; | |
d52b7888 NC |
2977 | if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) { |
2978 | (void) sv_2pv_flags(sv,&len, flags); | |
2979 | if (SvUTF8(sv)) | |
2980 | return len; | |
2981 | } else { | |
2982 | (void) SvPV_force(sv,len); | |
2983 | } | |
e0e62c2a | 2984 | } |
4411f3b6 | 2985 | |
f5cee72b | 2986 | if (SvUTF8(sv)) { |
5fec3b1d | 2987 | return SvCUR(sv); |
f5cee72b | 2988 | } |
5fec3b1d | 2989 | |
765f542d NC |
2990 | if (SvIsCOW(sv)) { |
2991 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
2992 | } |
2993 | ||
88632417 | 2994 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 2995 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 2996 | else { /* Assume Latin-1/EBCDIC */ |
c4e7c712 NC |
2997 | /* This function could be much more efficient if we |
2998 | * had a FLAG in SVs to signal if there are any hibit | |
2999 | * chars in the PV. Given that there isn't such a flag | |
3000 | * make the loop as fast as possible. */ | |
00b6aa41 | 3001 | const U8 * const s = (U8 *) SvPVX_const(sv); |
c4420975 | 3002 | const U8 * const e = (U8 *) SvEND(sv); |
93524f2b | 3003 | const U8 *t = s; |
c4e7c712 NC |
3004 | |
3005 | while (t < e) { | |
53c1dcc0 | 3006 | const U8 ch = *t++; |
00b6aa41 AL |
3007 | /* Check for hi bit */ |
3008 | if (!NATIVE_IS_INVARIANT(ch)) { | |
3009 | STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */ | |
3010 | U8 * const recoded = bytes_to_utf8((U8*)s, &len); | |
3011 | ||
3012 | SvPV_free(sv); /* No longer using what was there before. */ | |
3013 | SvPV_set(sv, (char*)recoded); | |
3014 | SvCUR_set(sv, len - 1); | |
3015 | SvLEN_set(sv, len); /* No longer know the real size. */ | |
c4e7c712 | 3016 | break; |
00b6aa41 | 3017 | } |
c4e7c712 NC |
3018 | } |
3019 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ | |
3020 | SvUTF8_on(sv); | |
560a288e | 3021 | } |
4411f3b6 | 3022 | return SvCUR(sv); |
560a288e GS |
3023 | } |
3024 | ||
c461cf8f JH |
3025 | /* |
3026 | =for apidoc sv_utf8_downgrade | |
3027 | ||
78ea37eb TS |
3028 | Attempts to convert the PV of an SV from characters to bytes. |
3029 | If the PV contains a character beyond byte, this conversion will fail; | |
3030 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
3031 | true, croaks. |
3032 | ||
13a6c0e0 JH |
3033 | This is not as a general purpose Unicode to byte encoding interface: |
3034 | use the Encode extension for that. | |
3035 | ||
c461cf8f JH |
3036 | =cut |
3037 | */ | |
3038 | ||
560a288e GS |
3039 | bool |
3040 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
3041 | { | |
97aff369 | 3042 | dVAR; |
78ea37eb | 3043 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 3044 | if (SvCUR(sv)) { |
03cfe0ae | 3045 | U8 *s; |
652088fc | 3046 | STRLEN len; |
fa301091 | 3047 | |
765f542d NC |
3048 | if (SvIsCOW(sv)) { |
3049 | sv_force_normal_flags(sv, 0); | |
3050 | } | |
03cfe0ae NIS |
3051 | s = (U8 *) SvPV(sv, len); |
3052 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
3053 | if (fail_ok) |
3054 | return FALSE; | |
3055 | else { | |
3056 | if (PL_op) | |
3057 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 3058 | OP_DESC(PL_op)); |
fa301091 JH |
3059 | else |
3060 | Perl_croak(aTHX_ "Wide character"); | |
3061 | } | |
4b3603a4 | 3062 | } |
b162af07 | 3063 | SvCUR_set(sv, len); |
67e989fb | 3064 | } |
560a288e | 3065 | } |
ffebcc3e | 3066 | SvUTF8_off(sv); |
560a288e GS |
3067 | return TRUE; |
3068 | } | |
3069 | ||
c461cf8f JH |
3070 | /* |
3071 | =for apidoc sv_utf8_encode | |
3072 | ||
78ea37eb TS |
3073 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
3074 | flag off so that it looks like octets again. | |
c461cf8f JH |
3075 | |
3076 | =cut | |
3077 | */ | |
3078 | ||
560a288e GS |
3079 | void |
3080 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
3081 | { | |
4c94c214 NC |
3082 | if (SvIsCOW(sv)) { |
3083 | sv_force_normal_flags(sv, 0); | |
3084 | } | |
3085 | if (SvREADONLY(sv)) { | |
3086 | Perl_croak(aTHX_ PL_no_modify); | |
3087 | } | |
a5f5288a | 3088 | (void) sv_utf8_upgrade(sv); |
560a288e GS |
3089 | SvUTF8_off(sv); |
3090 | } | |
3091 | ||
4411f3b6 NIS |
3092 | /* |
3093 | =for apidoc sv_utf8_decode | |
3094 | ||
78ea37eb TS |
3095 | If the PV of the SV is an octet sequence in UTF-8 |
3096 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
3097 | so that it looks like a character. If the PV contains only single-byte | |
3098 | characters, the C<SvUTF8> flag stays being off. | |
3099 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
3100 | |
3101 | =cut | |
3102 | */ | |
3103 | ||
560a288e GS |
3104 | bool |
3105 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
3106 | { | |
78ea37eb | 3107 | if (SvPOKp(sv)) { |
93524f2b NC |
3108 | const U8 *c; |
3109 | const U8 *e; | |
9cbac4c7 | 3110 | |
645c22ef DM |
3111 | /* The octets may have got themselves encoded - get them back as |
3112 | * bytes | |
3113 | */ | |
3114 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
3115 | return FALSE; |
3116 | ||
3117 | /* it is actually just a matter of turning the utf8 flag on, but | |
3118 | * we want to make sure everything inside is valid utf8 first. | |
3119 | */ | |
93524f2b | 3120 | c = (const U8 *) SvPVX_const(sv); |
63cd0674 | 3121 | if (!is_utf8_string(c, SvCUR(sv)+1)) |
67e989fb | 3122 | return FALSE; |
93524f2b | 3123 | e = (const U8 *) SvEND(sv); |
511c2ff0 | 3124 | while (c < e) { |
b64e5050 | 3125 | const U8 ch = *c++; |
c4d5f83a | 3126 | if (!UTF8_IS_INVARIANT(ch)) { |
67e989fb JH |
3127 | SvUTF8_on(sv); |
3128 | break; | |
3129 | } | |
560a288e | 3130 | } |
560a288e GS |
3131 | } |
3132 | return TRUE; | |
3133 | } | |
3134 | ||
954c1994 GS |
3135 | /* |
3136 | =for apidoc sv_setsv | |
3137 | ||
645c22ef DM |
3138 | Copies the contents of the source SV C<ssv> into the destination SV |
3139 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3140 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3141 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3142 | content of the destination. | |
3143 | ||
3144 | You probably want to use one of the assortment of wrappers, such as | |
3145 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3146 | C<SvSetMagicSV_nosteal>. | |
3147 | ||
8d6d96c1 HS |
3148 | =for apidoc sv_setsv_flags |
3149 | ||
645c22ef DM |
3150 | Copies the contents of the source SV C<ssv> into the destination SV |
3151 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3152 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3153 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3154 | content of the destination. | |
3155 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
5fcdf167 NC |
3156 | C<ssv> if appropriate, else not. If the C<flags> parameter has the |
3157 | C<NOSTEAL> bit set then the buffers of temps will not be stolen. <sv_setsv> | |
3158 | and C<sv_setsv_nomg> are implemented in terms of this function. | |
645c22ef DM |
3159 | |
3160 | You probably want to use one of the assortment of wrappers, such as | |
3161 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3162 | C<SvSetMagicSV_nosteal>. | |
3163 | ||
3164 | This is the primary function for copying scalars, and most other | |
3165 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
3166 | |
3167 | =cut | |
3168 | */ | |
3169 | ||
5d0301b7 | 3170 | static void |
2eb42952 | 3171 | S_glob_assign_glob(pTHX_ SV *dstr, SV *sstr, const int dtype) |
5d0301b7 NC |
3172 | { |
3173 | if (dtype != SVt_PVGV) { | |
3174 | const char * const name = GvNAME(sstr); | |
3175 | const STRLEN len = GvNAMELEN(sstr); | |
0d092c36 | 3176 | { |
f7877b28 NC |
3177 | if (dtype >= SVt_PV) { |
3178 | SvPV_free(dstr); | |
3179 | SvPV_set(dstr, 0); | |
3180 | SvLEN_set(dstr, 0); | |
3181 | SvCUR_set(dstr, 0); | |
3182 | } | |
0d092c36 | 3183 | SvUPGRADE(dstr, SVt_PVGV); |
dedf8e73 | 3184 | (void)SvOK_off(dstr); |
2e5b91de NC |
3185 | /* FIXME - why are we doing this, then turning it off and on again |
3186 | below? */ | |
3187 | isGV_with_GP_on(dstr); | |
f7877b28 | 3188 | } |
5d0301b7 NC |
3189 | GvSTASH(dstr) = GvSTASH(sstr); |
3190 | if (GvSTASH(dstr)) | |
3191 | Perl_sv_add_backref(aTHX_ (SV*)GvSTASH(dstr), dstr); | |
ae8cc45f | 3192 | gv_name_set((GV *)dstr, name, len, GV_ADD); |
5d0301b7 NC |
3193 | SvFAKE_on(dstr); /* can coerce to non-glob */ |
3194 | } | |
3195 | ||
3196 | #ifdef GV_UNIQUE_CHECK | |
3197 | if (GvUNIQUE((GV*)dstr)) { | |
3198 | Perl_croak(aTHX_ PL_no_modify); | |
3199 | } | |
3200 | #endif | |
3201 | ||
f7877b28 | 3202 | gp_free((GV*)dstr); |
2e5b91de | 3203 | isGV_with_GP_off(dstr); |
5d0301b7 | 3204 | (void)SvOK_off(dstr); |
2e5b91de | 3205 | isGV_with_GP_on(dstr); |
dedf8e73 | 3206 | GvINTRO_off(dstr); /* one-shot flag */ |
5d0301b7 NC |
3207 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
3208 | if (SvTAINTED(sstr)) | |
3209 | SvTAINT(dstr); | |
3210 | if (GvIMPORTED(dstr) != GVf_IMPORTED | |
3211 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3212 | { | |
3213 | GvIMPORTED_on(dstr); | |
3214 | } | |
3215 | GvMULTI_on(dstr); | |
3216 | return; | |
3217 | } | |
3218 | ||
b8473700 | 3219 | static void |
2eb42952 | 3220 | S_glob_assign_ref(pTHX_ SV *dstr, SV *sstr) { |
b8473700 NC |
3221 | SV * const sref = SvREFCNT_inc(SvRV(sstr)); |
3222 | SV *dref = NULL; | |
3223 | const int intro = GvINTRO(dstr); | |
2440974c | 3224 | SV **location; |
3386d083 | 3225 | U8 import_flag = 0; |
27242d61 NC |
3226 | const U32 stype = SvTYPE(sref); |
3227 | ||
b8473700 NC |
3228 | |
3229 | #ifdef GV_UNIQUE_CHECK | |
3230 | if (GvUNIQUE((GV*)dstr)) { | |
3231 | Perl_croak(aTHX_ PL_no_modify); | |
3232 | } | |
3233 | #endif | |
3234 | ||
3235 | if (intro) { | |
3236 | GvINTRO_off(dstr); /* one-shot flag */ | |
3237 | GvLINE(dstr) = CopLINE(PL_curcop); | |
3238 | GvEGV(dstr) = (GV*)dstr; | |
3239 | } | |
3240 | GvMULTI_on(dstr); | |
27242d61 | 3241 | switch (stype) { |
b8473700 | 3242 | case SVt_PVCV: |
27242d61 NC |
3243 | location = (SV **) &GvCV(dstr); |
3244 | import_flag = GVf_IMPORTED_CV; | |
3245 | goto common; | |
3246 | case SVt_PVHV: | |
3247 | location = (SV **) &GvHV(dstr); | |
3248 | import_flag = GVf_IMPORTED_HV; | |
3249 | goto common; | |
3250 | case SVt_PVAV: | |
3251 | location = (SV **) &GvAV(dstr); | |
3252 | import_flag = GVf_IMPORTED_AV; | |
3253 | goto common; | |
3254 | case SVt_PVIO: | |
3255 | location = (SV **) &GvIOp(dstr); | |
3256 | goto common; | |
3257 | case SVt_PVFM: | |
3258 | location = (SV **) &GvFORM(dstr); | |
3259 | default: | |
3260 | location = &GvSV(dstr); | |
3261 | import_flag = GVf_IMPORTED_SV; | |
3262 | common: | |
b8473700 | 3263 | if (intro) { |
27242d61 NC |
3264 | if (stype == SVt_PVCV) { |
3265 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
3266 | SvREFCNT_dec(GvCV(dstr)); | |
3267 | GvCV(dstr) = NULL; | |
3268 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ | |
3269 | PL_sub_generation++; | |
3270 | } | |
b8473700 | 3271 | } |
27242d61 | 3272 | SAVEGENERICSV(*location); |
b8473700 NC |
3273 | } |
3274 | else | |
27242d61 NC |
3275 | dref = *location; |
3276 | if (stype == SVt_PVCV && *location != sref) { | |
3277 | CV* const cv = (CV*)*location; | |
b8473700 NC |
3278 | if (cv) { |
3279 | if (!GvCVGEN((GV*)dstr) && | |
3280 | (CvROOT(cv) || CvXSUB(cv))) | |
3281 | { | |
3282 | /* Redefining a sub - warning is mandatory if | |
3283 | it was a const and its value changed. */ | |
3284 | if (CvCONST(cv) && CvCONST((CV*)sref) | |
3285 | && cv_const_sv(cv) == cv_const_sv((CV*)sref)) { | |
6f207bd3 | 3286 | NOOP; |
b8473700 NC |
3287 | /* They are 2 constant subroutines generated from |
3288 | the same constant. This probably means that | |
3289 | they are really the "same" proxy subroutine | |
3290 | instantiated in 2 places. Most likely this is | |
3291 | when a constant is exported twice. Don't warn. | |
3292 | */ | |
3293 | } | |
3294 | else if (ckWARN(WARN_REDEFINE) | |
3295 | || (CvCONST(cv) | |
3296 | && (!CvCONST((CV*)sref) | |
3297 | || sv_cmp(cv_const_sv(cv), | |
3298 | cv_const_sv((CV*)sref))))) { | |
3299 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
10edeb5d JH |
3300 | (const char *) |
3301 | (CvCONST(cv) | |
3302 | ? "Constant subroutine %s::%s redefined" | |
3303 | : "Subroutine %s::%s redefined"), | |
b8473700 NC |
3304 | HvNAME_get(GvSTASH((GV*)dstr)), |
3305 | GvENAME((GV*)dstr)); | |
3306 | } | |
3307 | } | |
3308 | if (!intro) | |
cbf82dd0 NC |
3309 | cv_ckproto_len(cv, (GV*)dstr, |
3310 | SvPOK(sref) ? SvPVX_const(sref) : NULL, | |
3311 | SvPOK(sref) ? SvCUR(sref) : 0); | |
b8473700 | 3312 | } |
b8473700 NC |
3313 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3314 | GvASSUMECV_on(dstr); | |
3315 | PL_sub_generation++; | |
3316 | } | |
2440974c | 3317 | *location = sref; |
3386d083 NC |
3318 | if (import_flag && !(GvFLAGS(dstr) & import_flag) |
3319 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) { | |
3320 | GvFLAGS(dstr) |= import_flag; | |
b8473700 NC |
3321 | } |
3322 | break; | |
3323 | } | |
b37c2d43 | 3324 | SvREFCNT_dec(dref); |
b8473700 NC |
3325 | if (SvTAINTED(sstr)) |
3326 | SvTAINT(dstr); | |
3327 | return; | |
3328 | } | |
3329 | ||
8d6d96c1 HS |
3330 | void |
3331 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
3332 | { | |
97aff369 | 3333 | dVAR; |
8990e307 LW |
3334 | register U32 sflags; |
3335 | register int dtype; | |
42d0e0b7 | 3336 | register svtype stype; |
463ee0b2 | 3337 | |
79072805 LW |
3338 | if (sstr == dstr) |
3339 | return; | |
29f4f0ab NC |
3340 | |
3341 | if (SvIS_FREED(dstr)) { | |
3342 | Perl_croak(aTHX_ "panic: attempt to copy value %" SVf | |
be2597df | 3343 | " to a freed scalar %p", SVfARG(sstr), (void *)dstr); |
29f4f0ab | 3344 | } |
765f542d | 3345 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 3346 | if (!sstr) |
3280af22 | 3347 | sstr = &PL_sv_undef; |
29f4f0ab | 3348 | if (SvIS_FREED(sstr)) { |
6c9570dc MHM |
3349 | Perl_croak(aTHX_ "panic: attempt to copy freed scalar %p to %p", |
3350 | (void*)sstr, (void*)dstr); | |
29f4f0ab | 3351 | } |
8990e307 LW |
3352 | stype = SvTYPE(sstr); |
3353 | dtype = SvTYPE(dstr); | |
79072805 | 3354 | |
52944de8 | 3355 | (void)SvAMAGIC_off(dstr); |
7a5fa8a2 | 3356 | if ( SvVOK(dstr) ) |
ece467f9 JP |
3357 | { |
3358 | /* need to nuke the magic */ | |
3359 | mg_free(dstr); | |
3360 | SvRMAGICAL_off(dstr); | |
3361 | } | |
9e7bc3e8 | 3362 | |
463ee0b2 | 3363 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 3364 | |
8990e307 | 3365 | switch (stype) { |
79072805 | 3366 | case SVt_NULL: |
aece5585 | 3367 | undef_sstr: |
20408e3c GS |
3368 | if (dtype != SVt_PVGV) { |
3369 | (void)SvOK_off(dstr); | |
3370 | return; | |
3371 | } | |
3372 | break; | |
463ee0b2 | 3373 | case SVt_IV: |
aece5585 GA |
3374 | if (SvIOK(sstr)) { |
3375 | switch (dtype) { | |
3376 | case SVt_NULL: | |
8990e307 | 3377 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
3378 | break; |
3379 | case SVt_NV: | |
aece5585 GA |
3380 | case SVt_RV: |
3381 | case SVt_PV: | |
a0d0e21e | 3382 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 | 3383 | break; |
010be86b NC |
3384 | case SVt_PVGV: |
3385 | goto end_of_first_switch; | |
aece5585 GA |
3386 | } |
3387 | (void)SvIOK_only(dstr); | |
45977657 | 3388 | SvIV_set(dstr, SvIVX(sstr)); |
25da4f38 IZ |
3389 | if (SvIsUV(sstr)) |
3390 | SvIsUV_on(dstr); | |
37c25af0 NC |
3391 | /* SvTAINTED can only be true if the SV has taint magic, which in |
3392 | turn means that the SV type is PVMG (or greater). This is the | |
3393 | case statement for SVt_IV, so this cannot be true (whatever gcov | |
3394 | may say). */ | |
3395 | assert(!SvTAINTED(sstr)); | |
aece5585 | 3396 | return; |
8990e307 | 3397 | } |
aece5585 GA |
3398 | goto undef_sstr; |
3399 | ||
463ee0b2 | 3400 | case SVt_NV: |
aece5585 GA |
3401 | if (SvNOK(sstr)) { |
3402 | switch (dtype) { | |
3403 | case SVt_NULL: | |
3404 | case SVt_IV: | |
8990e307 | 3405 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
3406 | break; |
3407 | case SVt_RV: | |
3408 | case SVt_PV: | |
3409 | case SVt_PVIV: | |
a0d0e21e | 3410 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 | 3411 | break; |
010be86b NC |
3412 | case SVt_PVGV: |
3413 | goto end_of_first_switch; | |
aece5585 | 3414 | } |
9d6ce603 | 3415 | SvNV_set(dstr, SvNVX(sstr)); |
aece5585 | 3416 | (void)SvNOK_only(dstr); |
37c25af0 NC |
3417 | /* SvTAINTED can only be true if the SV has taint magic, which in |
3418 | turn means that the SV type is PVMG (or greater). This is the | |
3419 | case statement for SVt_NV, so this cannot be true (whatever gcov | |
3420 | may say). */ | |
3421 | assert(!SvTAINTED(sstr)); | |
aece5585 | 3422 | return; |
8990e307 | 3423 | } |
aece5585 GA |
3424 | goto undef_sstr; |
3425 | ||
ed6116ce | 3426 | case SVt_RV: |
8990e307 | 3427 | if (dtype < SVt_RV) |
ed6116ce | 3428 | sv_upgrade(dstr, SVt_RV); |
ed6116ce | 3429 | break; |
fc36a67e | 3430 | case SVt_PVFM: |
f8c7b90f | 3431 | #ifdef PERL_OLD_COPY_ON_WRITE |
d89fc664 NC |
3432 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
3433 | if (dtype < SVt_PVIV) | |
3434 | sv_upgrade(dstr, SVt_PVIV); | |
3435 | break; | |
3436 | } | |
3437 | /* Fall through */ | |
3438 | #endif | |
3439 | case SVt_PV: | |
8990e307 | 3440 | if (dtype < SVt_PV) |
463ee0b2 | 3441 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
3442 | break; |
3443 | case SVt_PVIV: | |
8990e307 | 3444 | if (dtype < SVt_PVIV) |
463ee0b2 | 3445 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
3446 | break; |
3447 | case SVt_PVNV: | |
8990e307 | 3448 | if (dtype < SVt_PVNV) |
463ee0b2 | 3449 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 3450 | break; |
489f7bfe | 3451 | default: |
a3b680e6 AL |
3452 | { |
3453 | const char * const type = sv_reftype(sstr,0); | |
533c011a | 3454 | if (PL_op) |
a3b680e6 | 3455 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", type, OP_NAME(PL_op)); |
4633a7c4 | 3456 | else |
a3b680e6 AL |
3457 | Perl_croak(aTHX_ "Bizarre copy of %s", type); |
3458 | } | |
4633a7c4 LW |
3459 | break; |
3460 | ||
cecf5685 | 3461 | /* case SVt_BIND: */ |
39cb70dc | 3462 | case SVt_PVLV: |
79072805 | 3463 | case SVt_PVGV: |
cecf5685 | 3464 | if (isGV_with_GP(sstr) && dtype <= SVt_PVGV) { |
d4c19fe8 | 3465 | glob_assign_glob(dstr, sstr, dtype); |
b8c701c1 | 3466 | return; |
79072805 | 3467 | } |
cecf5685 | 3468 | /* SvVALID means that this PVGV is playing at being an FBM. */ |
5f66b61c | 3469 | /*FALLTHROUGH*/ |
79072805 | 3470 | |
489f7bfe | 3471 | case SVt_PVMG: |
8d6d96c1 | 3472 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 3473 | mg_get(sstr); |
1d9c78c6 | 3474 | if (SvTYPE(sstr) != stype) { |
973f89ab | 3475 | stype = SvTYPE(sstr); |
cecf5685 | 3476 | if (isGV_with_GP(sstr) && stype == SVt_PVGV && dtype <= SVt_PVGV) { |
d4c19fe8 | 3477 | glob_assign_glob(dstr, sstr, dtype); |
b8c701c1 NC |
3478 | return; |
3479 | } | |
973f89ab CS |
3480 | } |
3481 | } | |
ded42b9f | 3482 | if (stype == SVt_PVLV) |
862a34c6 | 3483 | SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 3484 | else |
42d0e0b7 | 3485 | SvUPGRADE(dstr, (svtype)stype); |
79072805 | 3486 | } |
010be86b | 3487 | end_of_first_switch: |
79072805 | 3488 | |
ff920335 NC |
3489 | /* dstr may have been upgraded. */ |
3490 | dtype = SvTYPE(dstr); | |
8990e307 LW |
3491 | sflags = SvFLAGS(sstr); |
3492 | ||
ba2fdce6 | 3493 | if (dtype == SVt_PVCV || dtype == SVt_PVFM) { |
85324b4d NC |
3494 | /* Assigning to a subroutine sets the prototype. */ |
3495 | if (SvOK(sstr)) { | |
3496 | STRLEN len; | |
3497 | const char *const ptr = SvPV_const(sstr, len); | |
3498 | ||
3499 | SvGROW(dstr, len + 1); | |
3500 | Copy(ptr, SvPVX(dstr), len + 1, char); | |
3501 | SvCUR_set(dstr, len); | |
fcddd32e | 3502 | SvPOK_only(dstr); |
ba2fdce6 | 3503 | SvFLAGS(dstr) |= sflags & SVf_UTF8; |
85324b4d NC |
3504 | } else { |
3505 | SvOK_off(dstr); | |
3506 | } | |
ba2fdce6 NC |
3507 | } else if (dtype == SVt_PVAV || dtype == SVt_PVHV) { |
3508 | const char * const type = sv_reftype(dstr,0); | |
3509 | if (PL_op) | |
3510 | Perl_croak(aTHX_ "Cannot copy to %s in %s", type, OP_NAME(PL_op)); | |
3511 | else | |
3512 | Perl_croak(aTHX_ "Cannot copy to %s", type); | |
85324b4d | 3513 | } else if (sflags & SVf_ROK) { |
cecf5685 NC |
3514 | if (isGV_with_GP(dstr) && dtype == SVt_PVGV |
3515 | && SvTYPE(SvRV(sstr)) == SVt_PVGV) { | |
acaa9288 NC |
3516 | sstr = SvRV(sstr); |
3517 | if (sstr == dstr) { | |
3518 | if (GvIMPORTED(dstr) != GVf_IMPORTED | |
3519 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3520 | { | |
3521 | GvIMPORTED_on(dstr); | |
3522 | } | |
3523 | GvMULTI_on(dstr); | |
3524 | return; | |
3525 | } | |
d4c19fe8 | 3526 | glob_assign_glob(dstr, sstr, dtype); |
acaa9288 NC |
3527 | return; |
3528 | } | |
3529 | ||
8990e307 | 3530 | if (dtype >= SVt_PV) { |
b8c701c1 | 3531 | if (dtype == SVt_PVGV) { |
d4c19fe8 | 3532 | glob_assign_ref(dstr, sstr); |
b8c701c1 NC |
3533 | return; |
3534 | } | |
3f7c398e | 3535 | if (SvPVX_const(dstr)) { |
8bd4d4c5 | 3536 | SvPV_free(dstr); |
b162af07 SP |
3537 | SvLEN_set(dstr, 0); |
3538 | SvCUR_set(dstr, 0); | |
a0d0e21e | 3539 | } |
8990e307 | 3540 | } |
a0d0e21e | 3541 | (void)SvOK_off(dstr); |
b162af07 | 3542 | SvRV_set(dstr, SvREFCNT_inc(SvRV(sstr))); |
96d4b0ee | 3543 | SvFLAGS(dstr) |= sflags & SVf_ROK; |
dfd48732 NC |
3544 | assert(!(sflags & SVp_NOK)); |
3545 | assert(!(sflags & SVp_IOK)); | |
3546 | assert(!(sflags & SVf_NOK)); | |
3547 | assert(!(sflags & SVf_IOK)); | |
ed6116ce | 3548 | } |
cecf5685 | 3549 | else if (dtype == SVt_PVGV && isGV_with_GP(dstr)) { |
c0c44674 NC |
3550 | if (!(sflags & SVf_OK)) { |
3551 | if (ckWARN(WARN_MISC)) | |
3552 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
3553 | "Undefined value assigned to typeglob"); | |
3554 | } | |
3555 | else { | |
3556 | GV *gv = gv_fetchsv(sstr, GV_ADD, SVt_PVGV); | |
3557 | if (dstr != (SV*)gv) { | |
3558 | if (GvGP(dstr)) | |
3559 | gp_free((GV*)dstr); | |
3560 | GvGP(dstr) = gp_ref(GvGP(gv)); | |
3561 | } | |
3562 | } | |
3563 | } | |
8990e307 | 3564 | else if (sflags & SVp_POK) { |
765f542d | 3565 | bool isSwipe = 0; |
79072805 LW |
3566 | |
3567 | /* | |
3568 | * Check to see if we can just swipe the string. If so, it's a | |
3569 | * possible small lose on short strings, but a big win on long ones. | |
3f7c398e SP |
3570 | * It might even be a win on short strings if SvPVX_const(dstr) |
3571 | * has to be allocated and SvPVX_const(sstr) has to be freed. | |
34482cd6 NC |
3572 | * Likewise if we can set up COW rather than doing an actual copy, we |
3573 | * drop to the else clause, as the swipe code and the COW setup code | |
3574 | * have much in common. | |
79072805 LW |
3575 | */ |
3576 | ||
120fac95 NC |
3577 | /* Whichever path we take through the next code, we want this true, |
3578 | and doing it now facilitates the COW check. */ | |
3579 | (void)SvPOK_only(dstr); | |
3580 | ||
765f542d | 3581 | if ( |
34482cd6 NC |
3582 | /* If we're already COW then this clause is not true, and if COW |
3583 | is allowed then we drop down to the else and make dest COW | |
3584 | with us. If caller hasn't said that we're allowed to COW | |
3585 | shared hash keys then we don't do the COW setup, even if the | |
3586 | source scalar is a shared hash key scalar. */ | |
3587 | (((flags & SV_COW_SHARED_HASH_KEYS) | |
3588 | ? (sflags & (SVf_FAKE|SVf_READONLY)) != (SVf_FAKE|SVf_READONLY) | |
3589 | : 1 /* If making a COW copy is forbidden then the behaviour we | |
3590 | desire is as if the source SV isn't actually already | |
3591 | COW, even if it is. So we act as if the source flags | |
3592 | are not COW, rather than actually testing them. */ | |
3593 | ) | |
f8c7b90f | 3594 | #ifndef PERL_OLD_COPY_ON_WRITE |
34482cd6 NC |
3595 | /* The change that added SV_COW_SHARED_HASH_KEYS makes the logic |
3596 | when PERL_OLD_COPY_ON_WRITE is defined a little wrong. | |
3597 | Conceptually PERL_OLD_COPY_ON_WRITE being defined should | |
3598 | override SV_COW_SHARED_HASH_KEYS, because it means "always COW" | |
3599 | but in turn, it's somewhat dead code, never expected to go | |
3600 | live, but more kept as a placeholder on how to do it better | |
3601 | in a newer implementation. */ | |
3602 | /* If we are COW and dstr is a suitable target then we drop down | |
3603 | into the else and make dest a COW of us. */ | |
b8f9541a NC |
3604 | || (SvFLAGS(dstr) & CAN_COW_MASK) != CAN_COW_FLAGS |
3605 | #endif | |
3606 | ) | |
765f542d | 3607 | && |
765f542d NC |
3608 | !(isSwipe = |
3609 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
3610 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
5fcdf167 NC |
3611 | (!(flags & SV_NOSTEAL)) && |
3612 | /* and we're allowed to steal temps */ | |
765f542d NC |
3613 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ |
3614 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 3615 | /* and won't be needed again, potentially */ |
765f542d | 3616 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
f8c7b90f | 3617 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 3618 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS |
120fac95 | 3619 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS |
765f542d NC |
3620 | && SvTYPE(sstr) >= SVt_PVIV) |
3621 | #endif | |
3622 | ) { | |
3623 | /* Failed the swipe test, and it's not a shared hash key either. | |
3624 | Have to copy the string. */ | |
3625 | STRLEN len = SvCUR(sstr); | |
3626 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
3f7c398e | 3627 | Move(SvPVX_const(sstr),SvPVX(dstr),len,char); |
765f542d NC |
3628 | SvCUR_set(dstr, len); |
3629 | *SvEND(dstr) = '\0'; | |
765f542d | 3630 | } else { |
f8c7b90f | 3631 | /* If PERL_OLD_COPY_ON_WRITE is not defined, then isSwipe will always |
765f542d | 3632 | be true in here. */ |
765f542d NC |
3633 | /* Either it's a shared hash key, or it's suitable for |
3634 | copy-on-write or we can swipe the string. */ | |
46187eeb | 3635 | if (DEBUG_C_TEST) { |
ed252734 | 3636 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
3637 | sv_dump(sstr); |
3638 | sv_dump(dstr); | |
46187eeb | 3639 | } |
f8c7b90f | 3640 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
3641 | if (!isSwipe) { |
3642 | /* I believe I should acquire a global SV mutex if | |
3643 | it's a COW sv (not a shared hash key) to stop | |
3644 | it going un copy-on-write. | |
3645 | If the source SV has gone un copy on write between up there | |
3646 | and down here, then (assert() that) it is of the correct | |
3647 | form to make it copy on write again */ | |
3648 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
3649 | != (SVf_FAKE | SVf_READONLY)) { | |
3650 | SvREADONLY_on(sstr); | |
3651 | SvFAKE_on(sstr); | |
3652 | /* Make the source SV into a loop of 1. | |
3653 | (about to become 2) */ | |
a29f6d03 | 3654 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
3655 | } |
3656 | } | |
3657 | #endif | |
3658 | /* Initial code is common. */ | |
94010e71 NC |
3659 | if (SvPVX_const(dstr)) { /* we know that dtype >= SVt_PV */ |
3660 | SvPV_free(dstr); | |
79072805 | 3661 | } |
765f542d | 3662 | |
765f542d NC |
3663 | if (!isSwipe) { |
3664 | /* making another shared SV. */ | |
3665 | STRLEN cur = SvCUR(sstr); | |
3666 | STRLEN len = SvLEN(sstr); | |
f8c7b90f | 3667 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 3668 | if (len) { |
b8f9541a | 3669 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
3670 | /* SvIsCOW_normal */ |
3671 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
3672 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
3673 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 3674 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
a604c751 NC |
3675 | } else |
3676 | #endif | |
3677 | { | |
765f542d | 3678 | /* SvIsCOW_shared_hash */ |
46187eeb NC |
3679 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
3680 | "Copy on write: Sharing hash\n")); | |
b8f9541a | 3681 | |
bdd68bc3 | 3682 | assert (SvTYPE(dstr) >= SVt_PV); |
765f542d | 3683 | SvPV_set(dstr, |
d1db91c6 | 3684 | HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr))))); |
bdd68bc3 | 3685 | } |
87a1ef3d SP |
3686 | SvLEN_set(dstr, len); |
3687 | SvCUR_set(dstr, cur); | |
765f542d NC |
3688 | SvREADONLY_on(dstr); |
3689 | SvFAKE_on(dstr); | |
3690 | /* Relesase a global SV mutex. */ | |
3691 | } | |
3692 | else | |
765f542d | 3693 | { /* Passes the swipe test. */ |
78d1e721 | 3694 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
765f542d NC |
3695 | SvLEN_set(dstr, SvLEN(sstr)); |
3696 | SvCUR_set(dstr, SvCUR(sstr)); | |
3697 | ||
3698 | SvTEMP_off(dstr); | |
3699 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
6136c704 | 3700 | SvPV_set(sstr, NULL); |
765f542d NC |
3701 | SvLEN_set(sstr, 0); |
3702 | SvCUR_set(sstr, 0); | |
3703 | SvTEMP_off(sstr); | |
3704 | } | |
3705 | } | |
8990e307 | 3706 | if (sflags & SVp_NOK) { |
9d6ce603 | 3707 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 | 3708 | } |
8990e307 | 3709 | if (sflags & SVp_IOK) { |
88555484 | 3710 | SvOOK_off(dstr); |
23525414 NC |
3711 | SvIV_set(dstr, SvIVX(sstr)); |
3712 | /* Must do this otherwise some other overloaded use of 0x80000000 | |
3713 | gets confused. I guess SVpbm_VALID */ | |
2b1c7e3e | 3714 | if (sflags & SVf_IVisUV) |
25da4f38 | 3715 | SvIsUV_on(dstr); |
79072805 | 3716 | } |
96d4b0ee | 3717 | SvFLAGS(dstr) |= sflags & (SVf_IOK|SVp_IOK|SVf_NOK|SVp_NOK|SVf_UTF8); |
4f2da183 | 3718 | { |
b0a11fe1 | 3719 | const MAGIC * const smg = SvVSTRING_mg(sstr); |
4f2da183 NC |
3720 | if (smg) { |
3721 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, | |
3722 | smg->mg_ptr, smg->mg_len); | |
3723 | SvRMAGICAL_on(dstr); | |
3724 | } | |
7a5fa8a2 | 3725 | } |
79072805 | 3726 | } |
5d581361 | 3727 | else if (sflags & (SVp_IOK|SVp_NOK)) { |
c2468cc7 | 3728 | (void)SvOK_off(dstr); |
96d4b0ee | 3729 | SvFLAGS(dstr) |= sflags & (SVf_IOK|SVp_IOK|SVf_IVisUV|SVf_NOK|SVp_NOK); |
5d581361 NC |
3730 | if (sflags & SVp_IOK) { |
3731 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
3732 | SvIV_set(dstr, SvIVX(sstr)); | |
3733 | } | |
3332b3c1 | 3734 | if (sflags & SVp_NOK) { |
9d6ce603 | 3735 | SvNV_set(dstr, SvNVX(sstr)); |
3332b3c1 JH |
3736 | } |
3737 | } | |
79072805 | 3738 | else { |
f7877b28 | 3739 | if (isGV_with_GP(sstr)) { |
180488f8 NC |
3740 | /* This stringification rule for globs is spread in 3 places. |
3741 | This feels bad. FIXME. */ | |
3742 | const U32 wasfake = sflags & SVf_FAKE; | |
3743 | ||
3744 | /* FAKE globs can get coerced, so need to turn this off | |
3745 | temporarily if it is on. */ | |
3746 | SvFAKE_off(sstr); | |
3747 | gv_efullname3(dstr, (GV *)sstr, "*"); | |
3748 | SvFLAGS(sstr) |= wasfake; | |
3749 | } | |
20408e3c GS |
3750 | else |
3751 | (void)SvOK_off(dstr); | |
a0d0e21e | 3752 | } |
27c9684d AP |
3753 | if (SvTAINTED(sstr)) |
3754 | SvTAINT(dstr); | |
79072805 LW |
3755 | } |
3756 | ||
954c1994 GS |
3757 | /* |
3758 | =for apidoc sv_setsv_mg | |
3759 | ||
3760 | Like C<sv_setsv>, but also handles 'set' magic. | |
3761 | ||
3762 | =cut | |
3763 | */ | |
3764 | ||
79072805 | 3765 | void |
864dbfa3 | 3766 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
3767 | { |
3768 | sv_setsv(dstr,sstr); | |
3769 | SvSETMAGIC(dstr); | |
3770 | } | |
3771 | ||
f8c7b90f | 3772 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
3773 | SV * |
3774 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
3775 | { | |
3776 | STRLEN cur = SvCUR(sstr); | |
3777 | STRLEN len = SvLEN(sstr); | |
3778 | register char *new_pv; | |
3779 | ||
3780 | if (DEBUG_C_TEST) { | |
3781 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
6c9570dc | 3782 | (void*)sstr, (void*)dstr); |
ed252734 NC |
3783 | sv_dump(sstr); |
3784 | if (dstr) | |
3785 | sv_dump(dstr); | |
3786 | } | |
3787 | ||
3788 | if (dstr) { | |
3789 | if (SvTHINKFIRST(dstr)) | |
3790 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
3f7c398e SP |
3791 | else if (SvPVX_const(dstr)) |
3792 | Safefree(SvPVX_const(dstr)); | |
ed252734 NC |
3793 | } |
3794 | else | |
3795 | new_SV(dstr); | |
862a34c6 | 3796 | SvUPGRADE(dstr, SVt_PVIV); |
ed252734 NC |
3797 | |
3798 | assert (SvPOK(sstr)); | |
3799 | assert (SvPOKp(sstr)); | |
3800 | assert (!SvIOK(sstr)); | |
3801 | assert (!SvIOKp(sstr)); | |
3802 | assert (!SvNOK(sstr)); | |
3803 | assert (!SvNOKp(sstr)); | |
3804 | ||
3805 | if (SvIsCOW(sstr)) { | |
3806 | ||
3807 | if (SvLEN(sstr) == 0) { | |
3808 | /* source is a COW shared hash key. */ | |
ed252734 NC |
3809 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
3810 | "Fast copy on write: Sharing hash\n")); | |
d1db91c6 | 3811 | new_pv = HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)))); |
ed252734 NC |
3812 | goto common_exit; |
3813 | } | |
3814 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
3815 | } else { | |
3816 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
862a34c6 | 3817 | SvUPGRADE(sstr, SVt_PVIV); |
ed252734 NC |
3818 | SvREADONLY_on(sstr); |
3819 | SvFAKE_on(sstr); | |
3820 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
3821 | "Fast copy on write: Converting sstr to COW\n")); | |
3822 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
3823 | } | |
3824 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 3825 | new_pv = SvPVX_mutable(sstr); |
ed252734 NC |
3826 | |
3827 | common_exit: | |
3828 | SvPV_set(dstr, new_pv); | |
3829 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
3830 | if (SvUTF8(sstr)) | |
3831 | SvUTF8_on(dstr); | |
87a1ef3d SP |
3832 | SvLEN_set(dstr, len); |
3833 | SvCUR_set(dstr, cur); | |
ed252734 NC |
3834 | if (DEBUG_C_TEST) { |
3835 | sv_dump(dstr); | |
3836 | } | |
3837 | return dstr; | |
3838 | } | |
3839 | #endif | |
3840 | ||
954c1994 GS |
3841 | /* |
3842 | =for apidoc sv_setpvn | |
3843 | ||
3844 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
3845 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
3846 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
3847 | |
3848 | =cut | |
3849 | */ | |
3850 | ||
ef50df4b | 3851 | void |
864dbfa3 | 3852 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 3853 | { |
97aff369 | 3854 | dVAR; |
c6f8c383 | 3855 | register char *dptr; |
22c522df | 3856 | |
765f542d | 3857 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 3858 | if (!ptr) { |
a0d0e21e | 3859 | (void)SvOK_off(sv); |
463ee0b2 LW |
3860 | return; |
3861 | } | |
22c522df JH |
3862 | else { |
3863 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
a3b680e6 | 3864 | const IV iv = len; |
9c5ffd7c JH |
3865 | if (iv < 0) |
3866 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 3867 | } |
862a34c6 | 3868 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 3869 | |
5902b6a9 | 3870 | dptr = SvGROW(sv, len + 1); |
c6f8c383 GA |
3871 | Move(ptr,dptr,len,char); |
3872 | dptr[len] = '\0'; | |
79072805 | 3873 | SvCUR_set(sv, len); |
1aa99e6b | 3874 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 3875 | SvTAINT(sv); |
79072805 LW |
3876 | } |
3877 | ||
954c1994 GS |
3878 | /* |
3879 | =for apidoc sv_setpvn_mg | |
3880 | ||
3881 | Like C<sv_setpvn>, but also handles 'set' magic. | |
3882 | ||
3883 | =cut | |
3884 | */ | |
3885 | ||
79072805 | 3886 | void |
864dbfa3 | 3887 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
3888 | { |
3889 | sv_setpvn(sv,ptr,len); | |
3890 | SvSETMAGIC(sv); | |
3891 | } | |
3892 | ||
954c1994 GS |
3893 | /* |
3894 | =for apidoc sv_setpv | |
3895 | ||
3896 | Copies a string into an SV. The string must be null-terminated. Does not | |
3897 | handle 'set' magic. See C<sv_setpv_mg>. | |
3898 | ||
3899 | =cut | |
3900 | */ | |
3901 | ||
ef50df4b | 3902 | void |
864dbfa3 | 3903 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 | 3904 | { |
97aff369 | 3905 | dVAR; |
79072805 LW |
3906 | register STRLEN len; |
3907 | ||
765f542d | 3908 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 3909 | if (!ptr) { |
a0d0e21e | 3910 | (void)SvOK_off(sv); |
463ee0b2 LW |
3911 | return; |
3912 | } | |
79072805 | 3913 | len = strlen(ptr); |
862a34c6 | 3914 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 3915 | |
79072805 | 3916 | SvGROW(sv, len + 1); |
463ee0b2 | 3917 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 3918 | SvCUR_set(sv, len); |
1aa99e6b | 3919 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
3920 | SvTAINT(sv); |
3921 | } | |
3922 | ||
954c1994 GS |
3923 | /* |
3924 | =for apidoc sv_setpv_mg | |
3925 | ||
3926 | Like C<sv_setpv>, but also handles 'set' magic. | |
3927 | ||
3928 | =cut | |
3929 | */ | |
3930 | ||
463ee0b2 | 3931 | void |
864dbfa3 | 3932 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
3933 | { |
3934 | sv_setpv(sv,ptr); | |
3935 | SvSETMAGIC(sv); | |
3936 | } | |
3937 | ||
954c1994 | 3938 | /* |
47518d95 | 3939 | =for apidoc sv_usepvn_flags |
954c1994 | 3940 | |
794a0d33 JH |
3941 | Tells an SV to use C<ptr> to find its string value. Normally the |
3942 | string is stored inside the SV but sv_usepvn allows the SV to use an | |
3943 | outside string. The C<ptr> should point to memory that was allocated | |
c1c21316 NC |
3944 | by C<malloc>. The string length, C<len>, must be supplied. By default |
3945 | this function will realloc (i.e. move) the memory pointed to by C<ptr>, | |
794a0d33 JH |
3946 | so that pointer should not be freed or used by the programmer after |
3947 | giving it to sv_usepvn, and neither should any pointers from "behind" | |
c1c21316 NC |
3948 | that pointer (e.g. ptr + 1) be used. |
3949 | ||
3950 | If C<flags> & SV_SMAGIC is true, will call SvSETMAGIC. If C<flags> & | |
3951 | SV_HAS_TRAILING_NUL is true, then C<ptr[len]> must be NUL, and the realloc | |
cbf82dd0 | 3952 | will be skipped. (i.e. the buffer is actually at least 1 byte longer than |
c1c21316 | 3953 | C<len>, and already meets the requirements for storing in C<SvPVX>) |
954c1994 GS |
3954 | |
3955 | =cut | |
3956 | */ | |
3957 | ||
ef50df4b | 3958 | void |
47518d95 | 3959 | Perl_sv_usepvn_flags(pTHX_ SV *sv, char *ptr, STRLEN len, U32 flags) |
463ee0b2 | 3960 | { |
97aff369 | 3961 | dVAR; |
1936d2a7 | 3962 | STRLEN allocate; |
765f542d | 3963 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
862a34c6 | 3964 | SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 3965 | if (!ptr) { |
a0d0e21e | 3966 | (void)SvOK_off(sv); |
47518d95 NC |
3967 | if (flags & SV_SMAGIC) |
3968 | SvSETMAGIC(sv); | |
463ee0b2 LW |
3969 | return; |
3970 | } | |
3f7c398e | 3971 | if (SvPVX_const(sv)) |
8bd4d4c5 | 3972 | SvPV_free(sv); |
1936d2a7 | 3973 | |
0b7042f9 | 3974 | #ifdef DEBUGGING |
2e90b4cd NC |
3975 | if (flags & SV_HAS_TRAILING_NUL) |
3976 | assert(ptr[len] == '\0'); | |
0b7042f9 | 3977 | #endif |
2e90b4cd | 3978 | |
c1c21316 | 3979 | allocate = (flags & SV_HAS_TRAILING_NUL) |
8f01dc65 | 3980 | ? len + 1: PERL_STRLEN_ROUNDUP(len + 1); |
cbf82dd0 NC |
3981 | if (flags & SV_HAS_TRAILING_NUL) { |
3982 | /* It's long enough - do nothing. | |
3983 | Specfically Perl_newCONSTSUB is relying on this. */ | |
3984 | } else { | |
69d25b4f | 3985 | #ifdef DEBUGGING |
69d25b4f | 3986 | /* Force a move to shake out bugs in callers. */ |
10edeb5d | 3987 | char *new_ptr = (char*)safemalloc(allocate); |
69d25b4f NC |
3988 | Copy(ptr, new_ptr, len, char); |
3989 | PoisonFree(ptr,len,char); | |
3990 | Safefree(ptr); | |
3991 | ptr = new_ptr; | |
69d25b4f | 3992 | #else |
10edeb5d | 3993 | ptr = (char*) saferealloc (ptr, allocate); |
69d25b4f | 3994 | #endif |
cbf82dd0 | 3995 | } |
f880fe2f | 3996 | SvPV_set(sv, ptr); |
463ee0b2 | 3997 | SvCUR_set(sv, len); |
1936d2a7 | 3998 | SvLEN_set(sv, allocate); |
c1c21316 NC |
3999 | if (!(flags & SV_HAS_TRAILING_NUL)) { |
4000 | *SvEND(sv) = '\0'; | |
4001 | } | |
1aa99e6b | 4002 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4003 | SvTAINT(sv); |
47518d95 NC |
4004 | if (flags & SV_SMAGIC) |
4005 | SvSETMAGIC(sv); | |
ef50df4b GS |
4006 | } |
4007 | ||
f8c7b90f | 4008 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4009 | /* Need to do this *after* making the SV normal, as we need the buffer |
4010 | pointer to remain valid until after we've copied it. If we let go too early, | |
4011 | another thread could invalidate it by unsharing last of the same hash key | |
4012 | (which it can do by means other than releasing copy-on-write Svs) | |
4013 | or by changing the other copy-on-write SVs in the loop. */ | |
4014 | STATIC void | |
5302ffd4 | 4015 | S_sv_release_COW(pTHX_ register SV *sv, const char *pvx, SV *after) |
765f542d | 4016 | { |
5302ffd4 | 4017 | { /* this SV was SvIsCOW_normal(sv) */ |
765f542d | 4018 | /* we need to find the SV pointing to us. */ |
cf5629ad | 4019 | SV *current = SV_COW_NEXT_SV(after); |
7a5fa8a2 | 4020 | |
765f542d NC |
4021 | if (current == sv) { |
4022 | /* The SV we point to points back to us (there were only two of us | |
4023 | in the loop.) | |
4024 | Hence other SV is no longer copy on write either. */ | |
4025 | SvFAKE_off(after); | |
4026 | SvREADONLY_off(after); | |
4027 | } else { | |
4028 | /* We need to follow the pointers around the loop. */ | |
4029 | SV *next; | |
4030 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4031 | assert (next); | |
4032 | current = next; | |
4033 | /* don't loop forever if the structure is bust, and we have | |
4034 | a pointer into a closed loop. */ | |
4035 | assert (current != after); | |
3f7c398e | 4036 | assert (SvPVX_const(current) == pvx); |
765f542d NC |
4037 | } |
4038 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4039 | SV_COW_NEXT_SV_SET(current, after); |
765f542d | 4040 | } |
765f542d NC |
4041 | } |
4042 | } | |
765f542d | 4043 | #endif |
645c22ef DM |
4044 | /* |
4045 | =for apidoc sv_force_normal_flags | |
4046 | ||
4047 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4048 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4049 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4050 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4051 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4052 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4053 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4054 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4055 | with flags set to 0. | |
645c22ef DM |
4056 | |
4057 | =cut | |
4058 | */ | |
4059 | ||
6fc92669 | 4060 | void |
840a7b70 | 4061 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4062 | { |
97aff369 | 4063 | dVAR; |
f8c7b90f | 4064 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4065 | if (SvREADONLY(sv)) { |
4066 | /* At this point I believe I should acquire a global SV mutex. */ | |
4067 | if (SvFAKE(sv)) { | |
b64e5050 | 4068 | const char * const pvx = SvPVX_const(sv); |
a28509cc AL |
4069 | const STRLEN len = SvLEN(sv); |
4070 | const STRLEN cur = SvCUR(sv); | |
5302ffd4 NC |
4071 | /* next COW sv in the loop. If len is 0 then this is a shared-hash |
4072 | key scalar, so we mustn't attempt to call SV_COW_NEXT_SV(), as | |
4073 | we'll fail an assertion. */ | |
4074 | SV * const next = len ? SV_COW_NEXT_SV(sv) : 0; | |
4075 | ||
46187eeb NC |
4076 | if (DEBUG_C_TEST) { |
4077 | PerlIO_printf(Perl_debug_log, | |
4078 | "Copy on write: Force normal %ld\n", | |
4079 | (long) flags); | |
e419cbc5 | 4080 | sv_dump(sv); |
46187eeb | 4081 | } |
765f542d NC |
4082 | SvFAKE_off(sv); |
4083 | SvREADONLY_off(sv); | |
9f653bb5 | 4084 | /* This SV doesn't own the buffer, so need to Newx() a new one: */ |
6136c704 | 4085 | SvPV_set(sv, NULL); |
87a1ef3d | 4086 | SvLEN_set(sv, 0); |
765f542d NC |
4087 | if (flags & SV_COW_DROP_PV) { |
4088 | /* OK, so we don't need to copy our buffer. */ | |
4089 | SvPOK_off(sv); | |
4090 | } else { | |
4091 | SvGROW(sv, cur + 1); | |
4092 | Move(pvx,SvPVX(sv),cur,char); | |
87a1ef3d | 4093 | SvCUR_set(sv, cur); |
765f542d NC |
4094 | *SvEND(sv) = '\0'; |
4095 | } | |
5302ffd4 NC |
4096 | if (len) { |
4097 | sv_release_COW(sv, pvx, next); | |
4098 | } else { | |
4099 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); | |
4100 | } | |
46187eeb | 4101 | if (DEBUG_C_TEST) { |
e419cbc5 | 4102 | sv_dump(sv); |
46187eeb | 4103 | } |
765f542d | 4104 | } |
923e4eb5 | 4105 | else if (IN_PERL_RUNTIME) |
765f542d NC |
4106 | Perl_croak(aTHX_ PL_no_modify); |
4107 | /* At this point I believe that I can drop the global SV mutex. */ | |
4108 | } | |
4109 | #else | |
2213622d | 4110 | if (SvREADONLY(sv)) { |
1c846c1f | 4111 | if (SvFAKE(sv)) { |
b64e5050 | 4112 | const char * const pvx = SvPVX_const(sv); |
66a1b24b | 4113 | const STRLEN len = SvCUR(sv); |
10bcdfd6 NC |
4114 | SvFAKE_off(sv); |
4115 | SvREADONLY_off(sv); | |
bd61b366 | 4116 | SvPV_set(sv, NULL); |
66a1b24b | 4117 | SvLEN_set(sv, 0); |
1c846c1f | 4118 | SvGROW(sv, len + 1); |
706aa1c9 | 4119 | Move(pvx,SvPVX(sv),len,char); |
1c846c1f | 4120 | *SvEND(sv) = '\0'; |
bdd68bc3 | 4121 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); |
1c846c1f | 4122 | } |
923e4eb5 | 4123 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 4124 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 4125 | } |
765f542d | 4126 | #endif |
2213622d | 4127 | if (SvROK(sv)) |
840a7b70 | 4128 | sv_unref_flags(sv, flags); |
6fc92669 GS |
4129 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
4130 | sv_unglob(sv); | |
0f15f207 | 4131 | } |
1c846c1f | 4132 | |
645c22ef | 4133 | /* |
954c1994 GS |
4134 | =for apidoc sv_chop |
4135 | ||
1c846c1f | 4136 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
4137 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
4138 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 4139 | string. Uses the "OOK hack". |
3f7c398e | 4140 | Beware: after this function returns, C<ptr> and SvPVX_const(sv) may no longer |
31869a79 | 4141 | refer to the same chunk of data. |
954c1994 GS |
4142 | |
4143 | =cut | |
4144 | */ | |
4145 | ||
79072805 | 4146 | void |
f54cb97a | 4147 | Perl_sv_chop(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4148 | { |
4149 | register STRLEN delta; | |
a0d0e21e | 4150 | if (!ptr || !SvPOKp(sv)) |
79072805 | 4151 | return; |
3f7c398e | 4152 | delta = ptr - SvPVX_const(sv); |
2213622d | 4153 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
4154 | if (SvTYPE(sv) < SVt_PVIV) |
4155 | sv_upgrade(sv,SVt_PVIV); | |
4156 | ||
4157 | if (!SvOOK(sv)) { | |
50483b2c | 4158 | if (!SvLEN(sv)) { /* make copy of shared string */ |
3f7c398e | 4159 | const char *pvx = SvPVX_const(sv); |
a28509cc | 4160 | const STRLEN len = SvCUR(sv); |
50483b2c | 4161 | SvGROW(sv, len + 1); |
706aa1c9 | 4162 | Move(pvx,SvPVX(sv),len,char); |
50483b2c JD |
4163 | *SvEND(sv) = '\0'; |
4164 | } | |
45977657 | 4165 | SvIV_set(sv, 0); |
a4bfb290 AB |
4166 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
4167 | and we do that anyway inside the SvNIOK_off | |
4168 | */ | |
7a5fa8a2 | 4169 | SvFLAGS(sv) |= SVf_OOK; |
79072805 | 4170 | } |
a4bfb290 | 4171 | SvNIOK_off(sv); |
b162af07 SP |
4172 | SvLEN_set(sv, SvLEN(sv) - delta); |
4173 | SvCUR_set(sv, SvCUR(sv) - delta); | |
f880fe2f | 4174 | SvPV_set(sv, SvPVX(sv) + delta); |
45977657 | 4175 | SvIV_set(sv, SvIVX(sv) + delta); |
79072805 LW |
4176 | } |
4177 | ||
954c1994 GS |
4178 | /* |
4179 | =for apidoc sv_catpvn | |
4180 | ||
4181 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
4182 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
4183 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 4184 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 4185 | |
8d6d96c1 HS |
4186 | =for apidoc sv_catpvn_flags |
4187 | ||
4188 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
4189 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
4190 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
4191 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
4192 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
4193 | in terms of this function. | |
4194 | ||
4195 | =cut | |
4196 | */ | |
4197 | ||
4198 | void | |
4199 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
4200 | { | |
97aff369 | 4201 | dVAR; |
8d6d96c1 | 4202 | STRLEN dlen; |
fabdb6c0 | 4203 | const char * const dstr = SvPV_force_flags(dsv, dlen, flags); |
8d6d96c1 | 4204 | |
8d6d96c1 HS |
4205 | SvGROW(dsv, dlen + slen + 1); |
4206 | if (sstr == dstr) | |
3f7c398e | 4207 | sstr = SvPVX_const(dsv); |
8d6d96c1 | 4208 | Move(sstr, SvPVX(dsv) + dlen, slen, char); |
b162af07 | 4209 | SvCUR_set(dsv, SvCUR(dsv) + slen); |
8d6d96c1 HS |
4210 | *SvEND(dsv) = '\0'; |
4211 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
4212 | SvTAINT(dsv); | |
bddd5118 NC |
4213 | if (flags & SV_SMAGIC) |
4214 | SvSETMAGIC(dsv); | |
79072805 LW |
4215 | } |
4216 | ||
954c1994 | 4217 | /* |
954c1994 GS |
4218 | =for apidoc sv_catsv |
4219 | ||
13e8c8e3 JH |
4220 | Concatenates the string from SV C<ssv> onto the end of the string in |
4221 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
4222 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 4223 | |
8d6d96c1 HS |
4224 | =for apidoc sv_catsv_flags |
4225 | ||
4226 | Concatenates the string from SV C<ssv> onto the end of the string in | |
4227 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
4228 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
4229 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
4230 | ||
4231 | =cut */ | |
4232 | ||
ef50df4b | 4233 | void |
8d6d96c1 | 4234 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 4235 | { |
97aff369 | 4236 | dVAR; |
bddd5118 | 4237 | if (ssv) { |
00b6aa41 AL |
4238 | STRLEN slen; |
4239 | const char *spv = SvPV_const(ssv, slen); | |
4240 | if (spv) { | |
bddd5118 NC |
4241 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
4242 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
4243 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously | |
4244 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4245 | dsv->sv_flags doesn't have that bit set. | |
4fd84b44 | 4246 | Andy Dougherty 12 Oct 2001 |
bddd5118 NC |
4247 | */ |
4248 | const I32 sutf8 = DO_UTF8(ssv); | |
4249 | I32 dutf8; | |
13e8c8e3 | 4250 | |
bddd5118 NC |
4251 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
4252 | mg_get(dsv); | |
4253 | dutf8 = DO_UTF8(dsv); | |
8d6d96c1 | 4254 | |
bddd5118 NC |
4255 | if (dutf8 != sutf8) { |
4256 | if (dutf8) { | |
4257 | /* Not modifying source SV, so taking a temporary copy. */ | |
00b6aa41 | 4258 | SV* const csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 4259 | |
bddd5118 NC |
4260 | sv_utf8_upgrade(csv); |
4261 | spv = SvPV_const(csv, slen); | |
4262 | } | |
4263 | else | |
4264 | sv_utf8_upgrade_nomg(dsv); | |
13e8c8e3 | 4265 | } |
bddd5118 | 4266 | sv_catpvn_nomg(dsv, spv, slen); |
e84ff256 | 4267 | } |
560a288e | 4268 | } |
bddd5118 NC |
4269 | if (flags & SV_SMAGIC) |
4270 | SvSETMAGIC(dsv); | |
79072805 LW |
4271 | } |
4272 | ||
954c1994 | 4273 | /* |
954c1994 GS |
4274 | =for apidoc sv_catpv |
4275 | ||
4276 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
4277 | If the SV has the UTF-8 status set, then the bytes appended should be |
4278 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 4279 | |
d5ce4a7c | 4280 | =cut */ |
954c1994 | 4281 | |
ef50df4b | 4282 | void |
0c981600 | 4283 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 | 4284 | { |
97aff369 | 4285 | dVAR; |
79072805 | 4286 | register STRLEN len; |
463ee0b2 | 4287 | STRLEN tlen; |
748a9306 | 4288 | char *junk; |
79072805 | 4289 | |
0c981600 | 4290 | if (!ptr) |
79072805 | 4291 | return; |
748a9306 | 4292 | junk = SvPV_force(sv, tlen); |
0c981600 | 4293 | len = strlen(ptr); |
463ee0b2 | 4294 | SvGROW(sv, tlen + len + 1); |
0c981600 | 4295 | if (ptr == junk) |
3f7c398e | 4296 | ptr = SvPVX_const(sv); |
0c981600 | 4297 | Move(ptr,SvPVX(sv)+tlen,len+1,char); |
b162af07 | 4298 | SvCUR_set(sv, SvCUR(sv) + len); |
d41ff1b8 | 4299 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4300 | SvTAINT(sv); |
79072805 LW |
4301 | } |
4302 | ||
954c1994 GS |
4303 | /* |
4304 | =for apidoc sv_catpv_mg | |
4305 | ||
4306 | Like C<sv_catpv>, but also handles 'set' magic. | |
4307 | ||
4308 | =cut | |
4309 | */ | |
4310 | ||
ef50df4b | 4311 | void |
0c981600 | 4312 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 4313 | { |
0c981600 | 4314 | sv_catpv(sv,ptr); |
ef50df4b GS |
4315 | SvSETMAGIC(sv); |
4316 | } | |
4317 | ||
645c22ef DM |
4318 | /* |
4319 | =for apidoc newSV | |
4320 | ||
561b68a9 SH |
4321 | Creates a new SV. A non-zero C<len> parameter indicates the number of |
4322 | bytes of preallocated string space the SV should have. An extra byte for a | |
4323 | trailing NUL is also reserved. (SvPOK is not set for the SV even if string | |
4324 | space is allocated.) The reference count for the new SV is set to 1. | |
4325 | ||
4326 | In 5.9.3, newSV() replaces the older NEWSV() API, and drops the first | |
4327 | parameter, I<x>, a debug aid which allowed callers to identify themselves. | |
4328 | This aid has been superseded by a new build option, PERL_MEM_LOG (see | |
4329 | L<perlhack/PERL_MEM_LOG>). The older API is still there for use in XS | |
4330 | modules supporting older perls. | |
645c22ef DM |
4331 | |
4332 | =cut | |
4333 | */ | |
4334 | ||
79072805 | 4335 | SV * |
864dbfa3 | 4336 | Perl_newSV(pTHX_ STRLEN len) |
79072805 | 4337 | { |
97aff369 | 4338 | dVAR; |
79072805 | 4339 | register SV *sv; |
1c846c1f | 4340 | |
4561caa4 | 4341 | new_SV(sv); |
79072805 LW |
4342 | if (len) { |
4343 | sv_upgrade(sv, SVt_PV); | |
4344 | SvGROW(sv, len + 1); | |
4345 | } | |
4346 | return sv; | |
4347 | } | |
954c1994 | 4348 | /* |
92110913 | 4349 | =for apidoc sv_magicext |
954c1994 | 4350 | |
68795e93 | 4351 | Adds magic to an SV, upgrading it if necessary. Applies the |
2d8d5d5a | 4352 | supplied vtable and returns a pointer to the magic added. |
92110913 | 4353 | |
2d8d5d5a SH |
4354 | Note that C<sv_magicext> will allow things that C<sv_magic> will not. |
4355 | In particular, you can add magic to SvREADONLY SVs, and add more than | |
4356 | one instance of the same 'how'. | |
645c22ef | 4357 | |
2d8d5d5a SH |
4358 | If C<namlen> is greater than zero then a C<savepvn> I<copy> of C<name> is |
4359 | stored, if C<namlen> is zero then C<name> is stored as-is and - as another | |
4360 | special case - if C<(name && namlen == HEf_SVKEY)> then C<name> is assumed | |
4361 | to contain an C<SV*> and is stored as-is with its REFCNT incremented. | |
92110913 | 4362 | |
2d8d5d5a | 4363 | (This is now used as a subroutine by C<sv_magic>.) |
954c1994 GS |
4364 | |
4365 | =cut | |
4366 | */ | |
92110913 | 4367 | MAGIC * |
53d44271 | 4368 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, const MGVTBL *vtable, |
92110913 | 4369 | const char* name, I32 namlen) |
79072805 | 4370 | { |
97aff369 | 4371 | dVAR; |
79072805 | 4372 | MAGIC* mg; |
68795e93 | 4373 | |
92110913 | 4374 | if (SvTYPE(sv) < SVt_PVMG) { |
862a34c6 | 4375 | SvUPGRADE(sv, SVt_PVMG); |
463ee0b2 | 4376 | } |
a02a5408 | 4377 | Newxz(mg, 1, MAGIC); |
79072805 | 4378 | mg->mg_moremagic = SvMAGIC(sv); |
b162af07 | 4379 | SvMAGIC_set(sv, mg); |
75f9d97a | 4380 | |
05f95b08 SB |
4381 | /* Sometimes a magic contains a reference loop, where the sv and |
4382 | object refer to each other. To prevent a reference loop that | |
4383 | would prevent such objects being freed, we look for such loops | |
4384 | and if we find one we avoid incrementing the object refcount. | |
87f0b213 JH |
4385 | |
4386 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 4387 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
4388 | |
4389 | */ | |
14befaf4 DM |
4390 | if (!obj || obj == sv || |
4391 | how == PERL_MAGIC_arylen || | |
4392 | how == PERL_MAGIC_qr || | |
8d2f4536 | 4393 | how == PERL_MAGIC_symtab || |
75f9d97a JH |
4394 | (SvTYPE(obj) == SVt_PVGV && |
4395 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
4396 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 4397 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 4398 | { |
8990e307 | 4399 | mg->mg_obj = obj; |
75f9d97a | 4400 | } |
85e6fe83 | 4401 | else { |
b37c2d43 | 4402 | mg->mg_obj = SvREFCNT_inc_simple(obj); |
85e6fe83 LW |
4403 | mg->mg_flags |= MGf_REFCOUNTED; |
4404 | } | |
b5ccf5f2 YST |
4405 | |
4406 | /* Normal self-ties simply pass a null object, and instead of | |
4407 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
4408 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
4409 | with an RV obj pointing to the glob containing the PVIO. In | |
4410 | this case, to avoid a reference loop, we need to weaken the | |
4411 | reference. | |
4412 | */ | |
4413 | ||
4414 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
4415 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
4416 | { | |
4417 | sv_rvweaken(obj); | |
4418 | } | |
4419 | ||
79072805 | 4420 | mg->mg_type = how; |
565764a8 | 4421 | mg->mg_len = namlen; |
9cbac4c7 | 4422 | if (name) { |
92110913 | 4423 | if (namlen > 0) |
1edc1566 | 4424 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 4425 | else if (namlen == HEf_SVKEY) |
b37c2d43 | 4426 | mg->mg_ptr = (char*)SvREFCNT_inc_simple_NN((SV*)name); |
68795e93 | 4427 | else |
92110913 | 4428 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 4429 | } |
53d44271 | 4430 | mg->mg_virtual = (MGVTBL *) vtable; |
68795e93 | 4431 | |
92110913 NIS |
4432 | mg_magical(sv); |
4433 | if (SvGMAGICAL(sv)) | |
4434 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
4435 | return mg; | |
4436 | } | |
4437 | ||
4438 | /* | |
4439 | =for apidoc sv_magic | |
1c846c1f | 4440 | |
92110913 NIS |
4441 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
4442 | then adds a new magic item of type C<how> to the head of the magic list. | |
4443 | ||
2d8d5d5a SH |
4444 | See C<sv_magicext> (which C<sv_magic> now calls) for a description of the |
4445 | handling of the C<name> and C<namlen> arguments. | |
4446 | ||
4509d3fb SB |
4447 | You need to use C<sv_magicext> to add magic to SvREADONLY SVs and also |
4448 | to add more than one instance of the same 'how'. | |
4449 | ||
92110913 NIS |
4450 | =cut |
4451 | */ | |
4452 | ||
4453 | void | |
4454 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 4455 | { |
97aff369 | 4456 | dVAR; |
53d44271 | 4457 | const MGVTBL *vtable; |
92110913 | 4458 | MAGIC* mg; |
92110913 | 4459 | |
f8c7b90f | 4460 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4461 | if (SvIsCOW(sv)) |
4462 | sv_force_normal_flags(sv, 0); | |
4463 | #endif | |
92110913 | 4464 | if (SvREADONLY(sv)) { |
d8084ca5 DM |
4465 | if ( |
4466 | /* its okay to attach magic to shared strings; the subsequent | |
4467 | * upgrade to PVMG will unshare the string */ | |
4468 | !(SvFAKE(sv) && SvTYPE(sv) < SVt_PVMG) | |
4469 | ||
4470 | && IN_PERL_RUNTIME | |
92110913 NIS |
4471 | && how != PERL_MAGIC_regex_global |
4472 | && how != PERL_MAGIC_bm | |
4473 | && how != PERL_MAGIC_fm | |
4474 | && how != PERL_MAGIC_sv | |
e6469971 | 4475 | && how != PERL_MAGIC_backref |
92110913 NIS |
4476 | ) |
4477 | { | |
4478 | Perl_croak(aTHX_ PL_no_modify); | |
4479 | } | |
4480 | } | |
4481 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
4482 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
4483 | /* sv_magic() refuses to add a magic of the same 'how' as an |
4484 | existing one | |
92110913 | 4485 | */ |
2a509ed3 | 4486 | if (how == PERL_MAGIC_taint) { |
92110913 | 4487 | mg->mg_len |= 1; |
2a509ed3 NC |
4488 | /* Any scalar which already had taint magic on which someone |
4489 | (erroneously?) did SvIOK_on() or similar will now be | |
4490 | incorrectly sporting public "OK" flags. */ | |
4491 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
4492 | } | |
92110913 NIS |
4493 | return; |
4494 | } | |
4495 | } | |
68795e93 | 4496 | |
79072805 | 4497 | switch (how) { |
14befaf4 | 4498 | case PERL_MAGIC_sv: |
92110913 | 4499 | vtable = &PL_vtbl_sv; |
79072805 | 4500 | break; |
14befaf4 | 4501 | case PERL_MAGIC_overload: |
92110913 | 4502 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 4503 | break; |
14befaf4 | 4504 | case PERL_MAGIC_overload_elem: |
92110913 | 4505 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 4506 | break; |
14befaf4 | 4507 | case PERL_MAGIC_overload_table: |
92110913 | 4508 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 4509 | break; |
14befaf4 | 4510 | case PERL_MAGIC_bm: |
92110913 | 4511 | vtable = &PL_vtbl_bm; |
79072805 | 4512 | break; |
14befaf4 | 4513 | case PERL_MAGIC_regdata: |
92110913 | 4514 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 4515 | break; |
14befaf4 | 4516 | case PERL_MAGIC_regdatum: |
92110913 | 4517 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 4518 | break; |
14befaf4 | 4519 | case PERL_MAGIC_env: |
92110913 | 4520 | vtable = &PL_vtbl_env; |
79072805 | 4521 | break; |
14befaf4 | 4522 | case PERL_MAGIC_fm: |
92110913 | 4523 | vtable = &PL_vtbl_fm; |
55497cff | 4524 | break; |
14befaf4 | 4525 | case PERL_MAGIC_envelem: |
92110913 | 4526 | vtable = &PL_vtbl_envelem; |
79072805 | 4527 | break; |
14befaf4 | 4528 | case PERL_MAGIC_regex_global: |
92110913 | 4529 | vtable = &PL_vtbl_mglob; |
93a17b20 | 4530 | break; |
14befaf4 | 4531 | case PERL_MAGIC_isa: |
92110913 | 4532 | vtable = &PL_vtbl_isa; |
463ee0b2 | 4533 | break; |
14befaf4 | 4534 | case PERL_MAGIC_isaelem: |
92110913 | 4535 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 4536 | break; |
14befaf4 | 4537 | case PERL_MAGIC_nkeys: |
92110913 | 4538 | vtable = &PL_vtbl_nkeys; |
16660edb | 4539 | break; |
14befaf4 | 4540 | case PERL_MAGIC_dbfile: |
aec46f14 | 4541 | vtable = NULL; |
93a17b20 | 4542 | break; |
14befaf4 | 4543 | case PERL_MAGIC_dbline: |
92110913 | 4544 | vtable = &PL_vtbl_dbline; |
79072805 | 4545 | break; |
36477c24 | 4546 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 4547 | case PERL_MAGIC_collxfrm: |
92110913 | 4548 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 4549 | break; |
36477c24 | 4550 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 4551 | case PERL_MAGIC_tied: |
92110913 | 4552 | vtable = &PL_vtbl_pack; |
463ee0b2 | 4553 | break; |
14befaf4 DM |
4554 | case PERL_MAGIC_tiedelem: |
4555 | case PERL_MAGIC_tiedscalar: | |
92110913 | 4556 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 4557 | break; |
14befaf4 | 4558 | case PERL_MAGIC_qr: |
92110913 | 4559 | vtable = &PL_vtbl_regexp; |
c277df42 | 4560 | break; |
b3ca2e83 NC |
4561 | case PERL_MAGIC_hints: |
4562 | /* As this vtable is all NULL, we can reuse it. */ | |
14befaf4 | 4563 | case PERL_MAGIC_sig: |
92110913 | 4564 | vtable = &PL_vtbl_sig; |
79072805 | 4565 | break; |
14befaf4 | 4566 | case PERL_MAGIC_sigelem: |
92110913 | 4567 | vtable = &PL_vtbl_sigelem; |
79072805 | 4568 | break; |
14befaf4 | 4569 | case PERL_MAGIC_taint: |
92110913 | 4570 | vtable = &PL_vtbl_taint; |
463ee0b2 | 4571 | break; |
14befaf4 | 4572 | case PERL_MAGIC_uvar: |
92110913 | 4573 | vtable = &PL_vtbl_uvar; |
79072805 | 4574 | break; |
14befaf4 | 4575 | case PERL_MAGIC_vec: |
92110913 | 4576 | vtable = &PL_vtbl_vec; |
79072805 | 4577 | break; |
a3874608 | 4578 | case PERL_MAGIC_arylen_p: |
bfcb3514 | 4579 | case PERL_MAGIC_rhash: |
8d2f4536 | 4580 | case PERL_MAGIC_symtab: |
ece467f9 | 4581 | case PERL_MAGIC_vstring: |
aec46f14 | 4582 | vtable = NULL; |
ece467f9 | 4583 | break; |
7e8c5dac HS |
4584 | case PERL_MAGIC_utf8: |
4585 | vtable = &PL_vtbl_utf8; | |
4586 | break; | |
14befaf4 | 4587 | case PERL_MAGIC_substr: |
92110913 | 4588 | vtable = &PL_vtbl_substr; |
79072805 | 4589 | break; |
14befaf4 | 4590 | case PERL_MAGIC_defelem: |
92110913 | 4591 | vtable = &PL_vtbl_defelem; |
5f05dabc | 4592 | break; |
14befaf4 | 4593 | case PERL_MAGIC_arylen: |
92110913 | 4594 | vtable = &PL_vtbl_arylen; |
79072805 | 4595 | break; |
14befaf4 | 4596 | case PERL_MAGIC_pos: |
92110913 | 4597 | vtable = &PL_vtbl_pos; |
a0d0e21e | 4598 | break; |
14befaf4 | 4599 | case PERL_MAGIC_backref: |
92110913 | 4600 | vtable = &PL_vtbl_backref; |
810b8aa5 | 4601 | break; |
b3ca2e83 NC |
4602 | case PERL_MAGIC_hintselem: |
4603 | vtable = &PL_vtbl_hintselem; | |
4604 | break; | |
14befaf4 DM |
4605 | case PERL_MAGIC_ext: |
4606 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
4607 | /* Useful for attaching extension internal data to perl vars. */ |
4608 | /* Note that multiple extensions may clash if magical scalars */ | |
4609 | /* etc holding private data from one are passed to another. */ | |
aec46f14 | 4610 | vtable = NULL; |
a0d0e21e | 4611 | break; |
79072805 | 4612 | default: |
14befaf4 | 4613 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 4614 | } |
68795e93 | 4615 | |
92110913 | 4616 | /* Rest of work is done else where */ |
aec46f14 | 4617 | mg = sv_magicext(sv,obj,how,vtable,name,namlen); |
68795e93 | 4618 | |
92110913 NIS |
4619 | switch (how) { |
4620 | case PERL_MAGIC_taint: | |
4621 | mg->mg_len = 1; | |
4622 | break; | |
4623 | case PERL_MAGIC_ext: | |
4624 | case PERL_MAGIC_dbfile: | |
4625 | SvRMAGICAL_on(sv); | |
4626 | break; | |
4627 | } | |
463ee0b2 LW |
4628 | } |
4629 | ||
c461cf8f JH |
4630 | /* |
4631 | =for apidoc sv_unmagic | |
4632 | ||
645c22ef | 4633 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
4634 | |
4635 | =cut | |
4636 | */ | |
4637 | ||
463ee0b2 | 4638 | int |
864dbfa3 | 4639 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
4640 | { |
4641 | MAGIC* mg; | |
4642 | MAGIC** mgp; | |
91bba347 | 4643 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 | 4644 | return 0; |
064cf529 | 4645 | mgp = &(((XPVMG*) SvANY(sv))->xmg_u.xmg_magic); |
463ee0b2 LW |
4646 | for (mg = *mgp; mg; mg = *mgp) { |
4647 | if (mg->mg_type == type) { | |
e1ec3a88 | 4648 | const MGVTBL* const vtbl = mg->mg_virtual; |
463ee0b2 | 4649 | *mgp = mg->mg_moremagic; |
1d7c1841 | 4650 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 4651 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 4652 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 4653 | if (mg->mg_len > 0) |
1edc1566 | 4654 | Safefree(mg->mg_ptr); |
565764a8 | 4655 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 4656 | SvREFCNT_dec((SV*)mg->mg_ptr); |
d2923cdd | 4657 | else if (mg->mg_type == PERL_MAGIC_utf8) |
7e8c5dac | 4658 | Safefree(mg->mg_ptr); |
9cbac4c7 | 4659 | } |
a0d0e21e LW |
4660 | if (mg->mg_flags & MGf_REFCOUNTED) |
4661 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
4662 | Safefree(mg); |
4663 | } | |
4664 | else | |
4665 | mgp = &mg->mg_moremagic; | |
79072805 | 4666 | } |
91bba347 | 4667 | if (!SvMAGIC(sv)) { |
463ee0b2 | 4668 | SvMAGICAL_off(sv); |
c268c2a6 | 4669 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
86f55936 | 4670 | SvMAGIC_set(sv, NULL); |
463ee0b2 LW |
4671 | } |
4672 | ||
4673 | return 0; | |
79072805 LW |
4674 | } |
4675 | ||
c461cf8f JH |
4676 | /* |
4677 | =for apidoc sv_rvweaken | |
4678 | ||
645c22ef DM |
4679 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
4680 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
4681 | push a back-reference to this RV onto the array of backreferences | |
1e73acc8 AS |
4682 | associated with that magic. If the RV is magical, set magic will be |
4683 | called after the RV is cleared. | |
c461cf8f JH |
4684 | |
4685 | =cut | |
4686 | */ | |
4687 | ||
810b8aa5 | 4688 | SV * |
864dbfa3 | 4689 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
4690 | { |
4691 | SV *tsv; | |
4692 | if (!SvOK(sv)) /* let undefs pass */ | |
4693 | return sv; | |
4694 | if (!SvROK(sv)) | |
cea2e8a9 | 4695 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 4696 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 4697 | if (ckWARN(WARN_MISC)) |
9014280d | 4698 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
4699 | return sv; |
4700 | } | |
4701 | tsv = SvRV(sv); | |
e15faf7d | 4702 | Perl_sv_add_backref(aTHX_ tsv, sv); |
810b8aa5 | 4703 | SvWEAKREF_on(sv); |
1c846c1f | 4704 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
4705 | return sv; |
4706 | } | |
4707 | ||
645c22ef DM |
4708 | /* Give tsv backref magic if it hasn't already got it, then push a |
4709 | * back-reference to sv onto the array associated with the backref magic. | |
4710 | */ | |
4711 | ||
e15faf7d NC |
4712 | void |
4713 | Perl_sv_add_backref(pTHX_ SV *tsv, SV *sv) | |
810b8aa5 | 4714 | { |
97aff369 | 4715 | dVAR; |
810b8aa5 | 4716 | AV *av; |
86f55936 NC |
4717 | |
4718 | if (SvTYPE(tsv) == SVt_PVHV) { | |
4719 | AV **const avp = Perl_hv_backreferences_p(aTHX_ (HV*)tsv); | |
4720 | ||
4721 | av = *avp; | |
4722 | if (!av) { | |
4723 | /* There is no AV in the offical place - try a fixup. */ | |
4724 | MAGIC *const mg = mg_find(tsv, PERL_MAGIC_backref); | |
4725 | ||
4726 | if (mg) { | |
4727 | /* Aha. They've got it stowed in magic. Bring it back. */ | |
4728 | av = (AV*)mg->mg_obj; | |
4729 | /* Stop mg_free decreasing the refernce count. */ | |
4730 | mg->mg_obj = NULL; | |
4731 | /* Stop mg_free even calling the destructor, given that | |
4732 | there's no AV to free up. */ | |
4733 | mg->mg_virtual = 0; | |
4734 | sv_unmagic(tsv, PERL_MAGIC_backref); | |
4735 | } else { | |
4736 | av = newAV(); | |
4737 | AvREAL_off(av); | |
b37c2d43 | 4738 | SvREFCNT_inc_simple_void(av); |
86f55936 NC |
4739 | } |
4740 | *avp = av; | |
4741 | } | |
4742 | } else { | |
4743 | const MAGIC *const mg | |
4744 | = SvMAGICAL(tsv) ? mg_find(tsv, PERL_MAGIC_backref) : NULL; | |
4745 | if (mg) | |
4746 | av = (AV*)mg->mg_obj; | |
4747 | else { | |
4748 | av = newAV(); | |
4749 | AvREAL_off(av); | |
4750 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); | |
4751 | /* av now has a refcnt of 2, which avoids it getting freed | |
4752 | * before us during global cleanup. The extra ref is removed | |
4753 | * by magic_killbackrefs() when tsv is being freed */ | |
4754 | } | |
810b8aa5 | 4755 | } |
d91d49e8 | 4756 | if (AvFILLp(av) >= AvMAX(av)) { |
d91d49e8 MM |
4757 | av_extend(av, AvFILLp(av)+1); |
4758 | } | |
4759 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
4760 | } |
4761 | ||
645c22ef DM |
4762 | /* delete a back-reference to ourselves from the backref magic associated |
4763 | * with the SV we point to. | |
4764 | */ | |
4765 | ||
1c846c1f | 4766 | STATIC void |
e15faf7d | 4767 | S_sv_del_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 | 4768 | { |
97aff369 | 4769 | dVAR; |
86f55936 | 4770 | AV *av = NULL; |
810b8aa5 GS |
4771 | SV **svp; |
4772 | I32 i; | |
86f55936 NC |
4773 | |
4774 | if (SvTYPE(tsv) == SVt_PVHV && SvOOK(tsv)) { | |
4775 | av = *Perl_hv_backreferences_p(aTHX_ (HV*)tsv); | |
5b285ea4 NC |
4776 | /* We mustn't attempt to "fix up" the hash here by moving the |
4777 | backreference array back to the hv_aux structure, as that is stored | |
4778 | in the main HvARRAY(), and hfreentries assumes that no-one | |
4779 | reallocates HvARRAY() while it is running. */ | |
86f55936 NC |
4780 | } |
4781 | if (!av) { | |
4782 | const MAGIC *const mg | |
4783 | = SvMAGICAL(tsv) ? mg_find(tsv, PERL_MAGIC_backref) : NULL; | |
4784 | if (mg) | |
4785 | av = (AV *)mg->mg_obj; | |
4786 | } | |
4787 | if (!av) { | |
e15faf7d NC |
4788 | if (PL_in_clean_all) |
4789 | return; | |
cea2e8a9 | 4790 | Perl_croak(aTHX_ "panic: del_backref"); |
86f55936 NC |
4791 | } |
4792 | ||
4793 | if (SvIS_FREED(av)) | |
4794 | return; | |
4795 | ||
810b8aa5 | 4796 | svp = AvARRAY(av); |
6a76db8b NC |
4797 | /* We shouldn't be in here more than once, but for paranoia reasons lets |
4798 | not assume this. */ | |
4799 | for (i = AvFILLp(av); i >= 0; i--) { | |
4800 | if (svp[i] == sv) { | |
4801 | const SSize_t fill = AvFILLp(av); | |
4802 | if (i != fill) { | |
4803 | /* We weren't the last entry. | |
4804 | An unordered list has this property that you can take the | |
4805 | last element off the end to fill the hole, and it's still | |
4806 | an unordered list :-) | |
4807 | */ | |
4808 | svp[i] = svp[fill]; | |
4809 | } | |
a0714e2c | 4810 | svp[fill] = NULL; |
6a76db8b NC |
4811 | AvFILLp(av) = fill - 1; |
4812 | } | |
4813 | } | |
810b8aa5 GS |
4814 | } |
4815 | ||
86f55936 NC |
4816 | int |
4817 | Perl_sv_kill_backrefs(pTHX_ SV *sv, AV *av) | |
4818 | { | |
4819 | SV **svp = AvARRAY(av); | |
4820 | ||
4821 | PERL_UNUSED_ARG(sv); | |
4822 | ||
4823 | /* Not sure why the av can get freed ahead of its sv, but somehow it does | |
4824 | in ext/B/t/bytecode.t test 15 (involving print <DATA>) */ | |
4825 | if (svp && !SvIS_FREED(av)) { | |
4826 | SV *const *const last = svp + AvFILLp(av); | |
4827 | ||
4828 | while (svp <= last) { | |
4829 | if (*svp) { | |
4830 | SV *const referrer = *svp; | |
4831 | if (SvWEAKREF(referrer)) { | |
4832 | /* XXX Should we check that it hasn't changed? */ | |
4833 | SvRV_set(referrer, 0); | |
4834 | SvOK_off(referrer); | |
4835 | SvWEAKREF_off(referrer); | |
1e73acc8 | 4836 | SvSETMAGIC(referrer); |
86f55936 NC |
4837 | } else if (SvTYPE(referrer) == SVt_PVGV || |
4838 | SvTYPE(referrer) == SVt_PVLV) { | |
4839 | /* You lookin' at me? */ | |
4840 | assert(GvSTASH(referrer)); | |
4841 | assert(GvSTASH(referrer) == (HV*)sv); | |
4842 | GvSTASH(referrer) = 0; | |
4843 | } else { | |
4844 | Perl_croak(aTHX_ | |
4845 | "panic: magic_killbackrefs (flags=%"UVxf")", | |
4846 | (UV)SvFLAGS(referrer)); | |
4847 | } | |
4848 | ||
a0714e2c | 4849 | *svp = NULL; |
86f55936 NC |
4850 | } |
4851 | svp++; | |
4852 | } | |
4853 | } | |
4854 | SvREFCNT_dec(av); /* remove extra count added by sv_add_backref() */ | |
4855 | return 0; | |
4856 | } | |
4857 | ||
954c1994 GS |
4858 | /* |
4859 | =for apidoc sv_insert | |
4860 | ||
4861 | Inserts a string at the specified offset/length within the SV. Similar to | |
4862 | the Perl substr() function. | |
4863 | ||
4864 | =cut | |
4865 | */ | |
4866 | ||
79072805 | 4867 | void |
e1ec3a88 | 4868 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, const char *little, STRLEN littlelen) |
79072805 | 4869 | { |
97aff369 | 4870 | dVAR; |
79072805 LW |
4871 | register char *big; |
4872 | register char *mid; | |
4873 | register char *midend; | |
4874 | register char *bigend; | |
4875 | register I32 i; | |
6ff81951 | 4876 | STRLEN curlen; |
1c846c1f | 4877 | |
79072805 | 4878 | |
8990e307 | 4879 | if (!bigstr) |
cea2e8a9 | 4880 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 4881 | SvPV_force(bigstr, curlen); |
60fa28ff | 4882 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
4883 | if (offset + len > curlen) { |
4884 | SvGROW(bigstr, offset+len+1); | |
93524f2b | 4885 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); |
6ff81951 GS |
4886 | SvCUR_set(bigstr, offset+len); |
4887 | } | |
79072805 | 4888 | |
69b47968 | 4889 | SvTAINT(bigstr); |
79072805 LW |
4890 | i = littlelen - len; |
4891 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 4892 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
4893 | mid = big + offset + len; |
4894 | midend = bigend = big + SvCUR(bigstr); | |
4895 | bigend += i; | |
4896 | *bigend = '\0'; | |
4897 | while (midend > mid) /* shove everything down */ | |
4898 | *--bigend = *--midend; | |
4899 | Move(little,big+offset,littlelen,char); | |
b162af07 | 4900 | SvCUR_set(bigstr, SvCUR(bigstr) + i); |
79072805 LW |
4901 | SvSETMAGIC(bigstr); |
4902 | return; | |
4903 | } | |
4904 | else if (i == 0) { | |
463ee0b2 | 4905 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
4906 | SvSETMAGIC(bigstr); |
4907 | return; | |
4908 | } | |
4909 | ||
463ee0b2 | 4910 | big = SvPVX(bigstr); |
79072805 LW |
4911 | mid = big + offset; |
4912 | midend = mid + len; | |
4913 | bigend = big + SvCUR(bigstr); | |
4914 | ||
4915 | if (midend > bigend) | |
cea2e8a9 | 4916 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
4917 | |
4918 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
4919 | if (littlelen) { | |
4920 | Move(little, mid, littlelen,char); | |
4921 | mid += littlelen; | |
4922 | } | |
4923 | i = bigend - midend; | |
4924 | if (i > 0) { | |
4925 | Move(midend, mid, i,char); | |
4926 | mid += i; | |
4927 | } | |
4928 | *mid = '\0'; | |
4929 | SvCUR_set(bigstr, mid - big); | |
4930 | } | |
155aba94 | 4931 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
4932 | midend -= littlelen; |
4933 | mid = midend; | |
4934 | sv_chop(bigstr,midend-i); | |
4935 | big += i; | |
4936 | while (i--) | |
4937 | *--midend = *--big; | |
4938 | if (littlelen) | |
4939 | Move(little, mid, littlelen,char); | |
4940 | } | |
4941 | else if (littlelen) { | |
4942 | midend -= littlelen; | |
4943 | sv_chop(bigstr,midend); | |
4944 | Move(little,midend,littlelen,char); | |
4945 | } | |
4946 | else { | |
4947 | sv_chop(bigstr,midend); | |
4948 | } | |
4949 | SvSETMAGIC(bigstr); | |
4950 | } | |
4951 | ||
c461cf8f JH |
4952 | /* |
4953 | =for apidoc sv_replace | |
4954 | ||
4955 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
4956 | The target SV physically takes over ownership of the body of the source SV |
4957 | and inherits its flags; however, the target keeps any magic it owns, | |
4958 | and any magic in the source is discarded. | |
ff276b08 | 4959 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 4960 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
4961 | |
4962 | =cut | |
4963 | */ | |
79072805 LW |
4964 | |
4965 | void | |
864dbfa3 | 4966 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 | 4967 | { |
97aff369 | 4968 | dVAR; |
a3b680e6 | 4969 | const U32 refcnt = SvREFCNT(sv); |
765f542d | 4970 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
30e5c352 | 4971 | if (SvREFCNT(nsv) != 1) { |
7437becc | 4972 | Perl_croak(aTHX_ "panic: reference miscount on nsv in sv_replace() (%" |
30e5c352 NC |
4973 | UVuf " != 1)", (UV) SvREFCNT(nsv)); |
4974 | } | |
93a17b20 | 4975 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
4976 | if (SvMAGICAL(nsv)) |
4977 | mg_free(nsv); | |
4978 | else | |
4979 | sv_upgrade(nsv, SVt_PVMG); | |
b162af07 | 4980 | SvMAGIC_set(nsv, SvMAGIC(sv)); |
a0d0e21e | 4981 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 | 4982 | SvMAGICAL_off(sv); |
b162af07 | 4983 | SvMAGIC_set(sv, NULL); |
93a17b20 | 4984 | } |
79072805 LW |
4985 | SvREFCNT(sv) = 0; |
4986 | sv_clear(sv); | |
477f5d66 | 4987 | assert(!SvREFCNT(sv)); |
fd0854ff DM |
4988 | #ifdef DEBUG_LEAKING_SCALARS |
4989 | sv->sv_flags = nsv->sv_flags; | |
4990 | sv->sv_any = nsv->sv_any; | |
4991 | sv->sv_refcnt = nsv->sv_refcnt; | |
f34d0642 | 4992 | sv->sv_u = nsv->sv_u; |
fd0854ff | 4993 | #else |
79072805 | 4994 | StructCopy(nsv,sv,SV); |
fd0854ff | 4995 | #endif |
7b2c381c NC |
4996 | /* Currently could join these into one piece of pointer arithmetic, but |
4997 | it would be unclear. */ | |
4998 | if(SvTYPE(sv) == SVt_IV) | |
4999 | SvANY(sv) | |
339049b0 | 5000 | = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
7b2c381c | 5001 | else if (SvTYPE(sv) == SVt_RV) { |
339049b0 | 5002 | SvANY(sv) = &sv->sv_u.svu_rv; |
7b2c381c NC |
5003 | } |
5004 | ||
fd0854ff | 5005 | |
f8c7b90f | 5006 | #ifdef PERL_OLD_COPY_ON_WRITE |
d3d0e6f1 NC |
5007 | if (SvIsCOW_normal(nsv)) { |
5008 | /* We need to follow the pointers around the loop to make the | |
5009 | previous SV point to sv, rather than nsv. */ | |
5010 | SV *next; | |
5011 | SV *current = nsv; | |
5012 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5013 | assert(next); | |
5014 | current = next; | |
3f7c398e | 5015 | assert(SvPVX_const(current) == SvPVX_const(nsv)); |
d3d0e6f1 NC |
5016 | } |
5017 | /* Make the SV before us point to the SV after us. */ | |
5018 | if (DEBUG_C_TEST) { | |
5019 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5020 | sv_dump(current); | |
a29f6d03 NC |
5021 | PerlIO_printf(Perl_debug_log, |
5022 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5023 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5024 | } | |
a29f6d03 | 5025 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5026 | } |
5027 | #endif | |
79072805 | 5028 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5029 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 5030 | SvREFCNT(nsv) = 0; |
463ee0b2 | 5031 | del_SV(nsv); |
79072805 LW |
5032 | } |
5033 | ||
c461cf8f JH |
5034 | /* |
5035 | =for apidoc sv_clear | |
5036 | ||
645c22ef DM |
5037 | Clear an SV: call any destructors, free up any memory used by the body, |
5038 | and free the body itself. The SV's head is I<not> freed, although | |
5039 | its type is set to all 1's so that it won't inadvertently be assumed | |
5040 | to be live during global destruction etc. | |
5041 | This function should only be called when REFCNT is zero. Most of the time | |
5042 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5043 | instead. | |
c461cf8f JH |
5044 | |
5045 | =cut | |
5046 | */ | |
5047 | ||
79072805 | 5048 | void |
864dbfa3 | 5049 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5050 | { |
27da23d5 | 5051 | dVAR; |
82bb6deb | 5052 | const U32 type = SvTYPE(sv); |
8edfc514 NC |
5053 | const struct body_details *const sv_type_details |
5054 | = bodies_by_type + type; | |
82bb6deb | 5055 | |
79072805 LW |
5056 | assert(sv); |
5057 | assert(SvREFCNT(sv) == 0); | |
5058 | ||
d2a0f284 JC |
5059 | if (type <= SVt_IV) { |
5060 | /* See the comment in sv.h about the collusion between this early | |
5061 | return and the overloading of the NULL and IV slots in the size | |
5062 | table. */ | |
82bb6deb | 5063 | return; |
d2a0f284 | 5064 | } |
82bb6deb | 5065 | |
ed6116ce | 5066 | if (SvOBJECT(sv)) { |
3280af22 | 5067 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5068 | dSP; |
893645bd | 5069 | HV* stash; |
d460ef45 | 5070 | do { |
b464bac0 | 5071 | CV* destructor; |
4e8e7886 | 5072 | stash = SvSTASH(sv); |
32251b26 | 5073 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5074 | if (destructor) { |
1b6737cc | 5075 | SV* const tmpref = newRV(sv); |
5cc433a6 | 5076 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ |
4e8e7886 | 5077 | ENTER; |
e788e7d3 | 5078 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5079 | EXTEND(SP, 2); |
5080 | PUSHMARK(SP); | |
5cc433a6 | 5081 | PUSHs(tmpref); |
4e8e7886 | 5082 | PUTBACK; |
44389ee9 | 5083 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
7a5fa8a2 NIS |
5084 | |
5085 | ||
d3acc0f7 | 5086 | POPSTACK; |
3095d977 | 5087 | SPAGAIN; |
4e8e7886 | 5088 | LEAVE; |
5cc433a6 AB |
5089 | if(SvREFCNT(tmpref) < 2) { |
5090 | /* tmpref is not kept alive! */ | |
5091 | SvREFCNT(sv)--; | |
b162af07 | 5092 | SvRV_set(tmpref, NULL); |
5cc433a6 AB |
5093 | SvROK_off(tmpref); |
5094 | } | |
5095 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5096 | } |
5097 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5098 | |
6f44e0a4 JP |
5099 | |
5100 | if (SvREFCNT(sv)) { | |
5101 | if (PL_in_clean_objs) | |
cea2e8a9 | 5102 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
bfcb3514 | 5103 | HvNAME_get(stash)); |
6f44e0a4 JP |
5104 | /* DESTROY gave object new lease on life */ |
5105 | return; | |
5106 | } | |
a0d0e21e | 5107 | } |
4e8e7886 | 5108 | |
a0d0e21e | 5109 | if (SvOBJECT(sv)) { |
4e8e7886 | 5110 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e | 5111 | SvOBJECT_off(sv); /* Curse the object. */ |
82bb6deb | 5112 | if (type != SVt_PVIO) |
3280af22 | 5113 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5114 | } |
463ee0b2 | 5115 | } |
82bb6deb | 5116 | if (type >= SVt_PVMG) { |
cecf5685 | 5117 | if (type == SVt_PVMG && SvPAD_OUR(sv)) { |
73d95100 | 5118 | SvREFCNT_dec(SvOURSTASH(sv)); |
e736a858 | 5119 | } else if (SvMAGIC(sv)) |
524189f1 | 5120 | mg_free(sv); |
00b1698f | 5121 | if (type == SVt_PVMG && SvPAD_TYPED(sv)) |
524189f1 JH |
5122 | SvREFCNT_dec(SvSTASH(sv)); |
5123 | } | |
82bb6deb | 5124 | switch (type) { |
cecf5685 | 5125 | /* case SVt_BIND: */ |
8990e307 | 5126 | case SVt_PVIO: |
df0bd2f4 GS |
5127 | if (IoIFP(sv) && |
5128 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5129 | IoIFP(sv) != PerlIO_stdout() && |
5130 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5131 | { |
f2b5be74 | 5132 | io_close((IO*)sv, FALSE); |
93578b34 | 5133 | } |
1d7c1841 | 5134 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5135 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5136 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5137 | Safefree(IoTOP_NAME(sv)); |
5138 | Safefree(IoFMT_NAME(sv)); | |
5139 | Safefree(IoBOTTOM_NAME(sv)); | |
82bb6deb | 5140 | goto freescalar; |
79072805 | 5141 | case SVt_PVCV: |
748a9306 | 5142 | case SVt_PVFM: |
85e6fe83 | 5143 | cv_undef((CV*)sv); |
a0d0e21e | 5144 | goto freescalar; |
79072805 | 5145 | case SVt_PVHV: |
86f55936 | 5146 | Perl_hv_kill_backrefs(aTHX_ (HV*)sv); |
85e6fe83 | 5147 | hv_undef((HV*)sv); |
a0d0e21e | 5148 | break; |
79072805 | 5149 | case SVt_PVAV: |
85e6fe83 | 5150 | av_undef((AV*)sv); |
a0d0e21e | 5151 | break; |
02270b4e | 5152 | case SVt_PVLV: |
dd28f7bb DM |
5153 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5154 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5155 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5156 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5157 | } | |
5158 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5159 | SvREFCNT_dec(LvTARG(sv)); | |
a0d0e21e | 5160 | case SVt_PVGV: |
cecf5685 NC |
5161 | if (isGV_with_GP(sv)) { |
5162 | gp_free((GV*)sv); | |
5163 | if (GvNAME_HEK(sv)) | |
5164 | unshare_hek(GvNAME_HEK(sv)); | |
893645bd NC |
5165 | /* If we're in a stash, we don't own a reference to it. However it does |
5166 | have a back reference to us, which needs to be cleared. */ | |
cecf5685 NC |
5167 | if (!SvVALID(sv) && GvSTASH(sv)) |
5168 | sv_del_backref((SV*)GvSTASH(sv), sv); | |
5169 | } | |
79072805 | 5170 | case SVt_PVMG: |
79072805 LW |
5171 | case SVt_PVNV: |
5172 | case SVt_PVIV: | |
a0d0e21e | 5173 | freescalar: |
5228ca4e NC |
5174 | /* Don't bother with SvOOK_off(sv); as we're only going to free it. */ |
5175 | if (SvOOK(sv)) { | |
93524f2b | 5176 | SvPV_set(sv, SvPVX_mutable(sv) - SvIVX(sv)); |
5228ca4e NC |
5177 | /* Don't even bother with turning off the OOK flag. */ |
5178 | } | |
79072805 | 5179 | case SVt_PV: |
a0d0e21e | 5180 | case SVt_RV: |
810b8aa5 | 5181 | if (SvROK(sv)) { |
b37c2d43 | 5182 | SV * const target = SvRV(sv); |
810b8aa5 | 5183 | if (SvWEAKREF(sv)) |
e15faf7d | 5184 | sv_del_backref(target, sv); |
810b8aa5 | 5185 | else |
e15faf7d | 5186 | SvREFCNT_dec(target); |
810b8aa5 | 5187 | } |
f8c7b90f | 5188 | #ifdef PERL_OLD_COPY_ON_WRITE |
3f7c398e | 5189 | else if (SvPVX_const(sv)) { |
765f542d NC |
5190 | if (SvIsCOW(sv)) { |
5191 | /* I believe I need to grab the global SV mutex here and | |
5192 | then recheck the COW status. */ | |
46187eeb NC |
5193 | if (DEBUG_C_TEST) { |
5194 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5195 | sv_dump(sv); |
46187eeb | 5196 | } |
5302ffd4 NC |
5197 | if (SvLEN(sv)) { |
5198 | sv_release_COW(sv, SvPVX_const(sv), SV_COW_NEXT_SV(sv)); | |
5199 | } else { | |
5200 | unshare_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sv))); | |
5201 | } | |
5202 | ||
765f542d NC |
5203 | /* And drop it here. */ |
5204 | SvFAKE_off(sv); | |
5205 | } else if (SvLEN(sv)) { | |
3f7c398e | 5206 | Safefree(SvPVX_const(sv)); |
765f542d NC |
5207 | } |
5208 | } | |
5209 | #else | |
3f7c398e | 5210 | else if (SvPVX_const(sv) && SvLEN(sv)) |
94010e71 | 5211 | Safefree(SvPVX_mutable(sv)); |
3f7c398e | 5212 | else if (SvPVX_const(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
bdd68bc3 | 5213 | unshare_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sv))); |
1c846c1f NIS |
5214 | SvFAKE_off(sv); |
5215 | } | |
765f542d | 5216 | #endif |
79072805 LW |
5217 | break; |
5218 | case SVt_NV: | |
79072805 LW |
5219 | break; |
5220 | } | |
5221 | ||
893645bd NC |
5222 | SvFLAGS(sv) &= SVf_BREAK; |
5223 | SvFLAGS(sv) |= SVTYPEMASK; | |
5224 | ||
8edfc514 | 5225 | if (sv_type_details->arena) { |
b9502f15 | 5226 | del_body(((char *)SvANY(sv) + sv_type_details->offset), |
8edfc514 NC |
5227 | &PL_body_roots[type]); |
5228 | } | |
d2a0f284 | 5229 | else if (sv_type_details->body_size) { |
8edfc514 NC |
5230 | my_safefree(SvANY(sv)); |
5231 | } | |
79072805 LW |
5232 | } |
5233 | ||
645c22ef DM |
5234 | /* |
5235 | =for apidoc sv_newref | |
5236 | ||
5237 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
5238 | instead. | |
5239 | ||
5240 | =cut | |
5241 | */ | |
5242 | ||
79072805 | 5243 | SV * |
864dbfa3 | 5244 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 5245 | { |
96a5add6 | 5246 | PERL_UNUSED_CONTEXT; |
463ee0b2 | 5247 | if (sv) |
4db098f4 | 5248 | (SvREFCNT(sv))++; |
79072805 LW |
5249 | return sv; |
5250 | } | |
5251 | ||
c461cf8f JH |
5252 | /* |
5253 | =for apidoc sv_free | |
5254 | ||
645c22ef DM |
5255 | Decrement an SV's reference count, and if it drops to zero, call |
5256 | C<sv_clear> to invoke destructors and free up any memory used by | |
5257 | the body; finally, deallocate the SV's head itself. | |
5258 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
5259 | |
5260 | =cut | |
5261 | */ | |
5262 | ||
79072805 | 5263 | void |
864dbfa3 | 5264 | Perl_sv_free(pTHX_ SV *sv) |
79072805 | 5265 | { |
27da23d5 | 5266 | dVAR; |
79072805 LW |
5267 | if (!sv) |
5268 | return; | |
a0d0e21e LW |
5269 | if (SvREFCNT(sv) == 0) { |
5270 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
5271 | /* this SV's refcnt has been artificially decremented to |
5272 | * trigger cleanup */ | |
a0d0e21e | 5273 | return; |
3280af22 | 5274 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 5275 | return; |
d689ffdd JP |
5276 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5277 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5278 | SvREFCNT(sv) = (~(U32)0)/2; | |
5279 | return; | |
5280 | } | |
41e4abd8 | 5281 | if (ckWARN_d(WARN_INTERNAL)) { |
d5dede04 | 5282 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
5283 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
5284 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
41e4abd8 NC |
5285 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
5286 | Perl_dump_sv_child(aTHX_ sv); | |
5287 | #endif | |
5288 | } | |
79072805 LW |
5289 | return; |
5290 | } | |
4db098f4 | 5291 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 5292 | return; |
8c4d3c90 NC |
5293 | Perl_sv_free2(aTHX_ sv); |
5294 | } | |
5295 | ||
5296 | void | |
5297 | Perl_sv_free2(pTHX_ SV *sv) | |
5298 | { | |
27da23d5 | 5299 | dVAR; |
463ee0b2 LW |
5300 | #ifdef DEBUGGING |
5301 | if (SvTEMP(sv)) { | |
0453d815 | 5302 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 5303 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
5304 | "Attempt to free temp prematurely: SV 0x%"UVxf |
5305 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 5306 | return; |
79072805 | 5307 | } |
463ee0b2 | 5308 | #endif |
d689ffdd JP |
5309 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5310 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5311 | SvREFCNT(sv) = (~(U32)0)/2; | |
5312 | return; | |
5313 | } | |
79072805 | 5314 | sv_clear(sv); |
477f5d66 CS |
5315 | if (! SvREFCNT(sv)) |
5316 | del_SV(sv); | |
79072805 LW |
5317 | } |
5318 | ||
954c1994 GS |
5319 | /* |
5320 | =for apidoc sv_len | |
5321 | ||
645c22ef DM |
5322 | Returns the length of the string in the SV. Handles magic and type |
5323 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
5324 | |
5325 | =cut | |
5326 | */ | |
5327 | ||
79072805 | 5328 | STRLEN |
864dbfa3 | 5329 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 5330 | { |
463ee0b2 | 5331 | STRLEN len; |
79072805 LW |
5332 | |
5333 | if (!sv) | |
5334 | return 0; | |
5335 | ||
8990e307 | 5336 | if (SvGMAGICAL(sv)) |
565764a8 | 5337 | len = mg_length(sv); |
8990e307 | 5338 | else |
4d84ee25 | 5339 | (void)SvPV_const(sv, len); |
463ee0b2 | 5340 | return len; |
79072805 LW |
5341 | } |
5342 | ||
c461cf8f JH |
5343 | /* |
5344 | =for apidoc sv_len_utf8 | |
5345 | ||
5346 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 5347 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
5348 | |
5349 | =cut | |
5350 | */ | |
5351 | ||
7e8c5dac HS |
5352 | /* |
5353 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
9564a3bd NC |
5354 | * mg_ptr is used, by sv_pos_u2b() and sv_pos_b2u() - see the comments below. |
5355 | * (Note that the mg_len is not the length of the mg_ptr field. | |
5356 | * This allows the cache to store the character length of the string without | |
5357 | * needing to malloc() extra storage to attach to the mg_ptr.) | |
7a5fa8a2 | 5358 | * |
7e8c5dac HS |
5359 | */ |
5360 | ||
a0ed51b3 | 5361 | STRLEN |
864dbfa3 | 5362 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 5363 | { |
a0ed51b3 LW |
5364 | if (!sv) |
5365 | return 0; | |
5366 | ||
a0ed51b3 | 5367 | if (SvGMAGICAL(sv)) |
b76347f2 | 5368 | return mg_length(sv); |
a0ed51b3 | 5369 | else |
b76347f2 | 5370 | { |
26346457 | 5371 | STRLEN len; |
e62f0680 | 5372 | const U8 *s = (U8*)SvPV_const(sv, len); |
7e8c5dac | 5373 | |
26346457 NC |
5374 | if (PL_utf8cache) { |
5375 | STRLEN ulen; | |
5376 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; | |
5377 | ||
5378 | if (mg && mg->mg_len != -1) { | |
5379 | ulen = mg->mg_len; | |
5380 | if (PL_utf8cache < 0) { | |
5381 | const STRLEN real = Perl_utf8_length(aTHX_ s, s + len); | |
5382 | if (real != ulen) { | |
5383 | /* Need to turn the assertions off otherwise we may | |
5384 | recurse infinitely while printing error messages. | |
5385 | */ | |
5386 | SAVEI8(PL_utf8cache); | |
5387 | PL_utf8cache = 0; | |
f5992bc4 RB |
5388 | Perl_croak(aTHX_ "panic: sv_len_utf8 cache %"UVuf |
5389 | " real %"UVuf" for %"SVf, | |
be2597df | 5390 | (UV) ulen, (UV) real, SVfARG(sv)); |
26346457 NC |
5391 | } |
5392 | } | |
5393 | } | |
5394 | else { | |
5395 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
5396 | if (!SvREADONLY(sv)) { | |
5397 | if (!mg) { | |
5398 | mg = sv_magicext(sv, 0, PERL_MAGIC_utf8, | |
5399 | &PL_vtbl_utf8, 0, 0); | |
5400 | } | |
cb9e20bb | 5401 | assert(mg); |
26346457 | 5402 | mg->mg_len = ulen; |
cb9e20bb | 5403 | } |
cb9e20bb | 5404 | } |
26346457 | 5405 | return ulen; |
7e8c5dac | 5406 | } |
26346457 | 5407 | return Perl_utf8_length(aTHX_ s, s + len); |
7e8c5dac HS |
5408 | } |
5409 | } | |
5410 | ||
9564a3bd NC |
5411 | /* Walk forwards to find the byte corresponding to the passed in UTF-8 |
5412 | offset. */ | |
bdf30dd6 | 5413 | static STRLEN |
721e86b6 | 5414 | S_sv_pos_u2b_forwards(const U8 *const start, const U8 *const send, |
bdf30dd6 NC |
5415 | STRLEN uoffset) |
5416 | { | |
5417 | const U8 *s = start; | |
5418 | ||
5419 | while (s < send && uoffset--) | |
5420 | s += UTF8SKIP(s); | |
5421 | if (s > send) { | |
5422 | /* This is the existing behaviour. Possibly it should be a croak, as | |
5423 | it's actually a bounds error */ | |
5424 | s = send; | |
5425 | } | |
5426 | return s - start; | |
5427 | } | |
5428 | ||
9564a3bd NC |
5429 | /* Given the length of the string in both bytes and UTF-8 characters, decide |
5430 | whether to walk forwards or backwards to find the byte corresponding to | |
5431 | the passed in UTF-8 offset. */ | |
c336ad0b | 5432 | static STRLEN |
721e86b6 | 5433 | S_sv_pos_u2b_midway(const U8 *const start, const U8 *send, |
c336ad0b NC |
5434 | STRLEN uoffset, STRLEN uend) |
5435 | { | |
5436 | STRLEN backw = uend - uoffset; | |
5437 | if (uoffset < 2 * backw) { | |
25a8a4ef | 5438 | /* The assumption is that going forwards is twice the speed of going |
c336ad0b NC |
5439 | forward (that's where the 2 * backw comes from). |
5440 | (The real figure of course depends on the UTF-8 data.) */ | |
721e86b6 | 5441 | return sv_pos_u2b_forwards(start, send, uoffset); |
c336ad0b NC |
5442 | } |
5443 | ||
5444 | while (backw--) { | |
5445 | send--; | |
5446 | while (UTF8_IS_CONTINUATION(*send)) | |
5447 | send--; | |
5448 | } | |
5449 | return send - start; | |
5450 | } | |
5451 | ||
9564a3bd NC |
5452 | /* For the string representation of the given scalar, find the byte |
5453 | corresponding to the passed in UTF-8 offset. uoffset0 and boffset0 | |
5454 | give another position in the string, *before* the sought offset, which | |
5455 | (which is always true, as 0, 0 is a valid pair of positions), which should | |
5456 | help reduce the amount of linear searching. | |
5457 | If *mgp is non-NULL, it should point to the UTF-8 cache magic, which | |
5458 | will be used to reduce the amount of linear searching. The cache will be | |
5459 | created if necessary, and the found value offered to it for update. */ | |
28ccbf94 NC |
5460 | static STRLEN |
5461 | S_sv_pos_u2b_cached(pTHX_ SV *sv, MAGIC **mgp, const U8 *const start, | |
5462 | const U8 *const send, STRLEN uoffset, | |
5463 | STRLEN uoffset0, STRLEN boffset0) { | |
7087a21c | 5464 | STRLEN boffset = 0; /* Actually always set, but let's keep gcc happy. */ |
c336ad0b NC |
5465 | bool found = FALSE; |
5466 | ||
75c33c12 NC |
5467 | assert (uoffset >= uoffset0); |
5468 | ||
c336ad0b | 5469 | if (SvMAGICAL(sv) && !SvREADONLY(sv) && PL_utf8cache |
0905937d | 5470 | && (*mgp || (*mgp = mg_find(sv, PERL_MAGIC_utf8)))) { |
d8b2e1f9 NC |
5471 | if ((*mgp)->mg_ptr) { |
5472 | STRLEN *cache = (STRLEN *) (*mgp)->mg_ptr; | |
5473 | if (cache[0] == uoffset) { | |
5474 | /* An exact match. */ | |
5475 | return cache[1]; | |
5476 | } | |
ab455f60 NC |
5477 | if (cache[2] == uoffset) { |
5478 | /* An exact match. */ | |
5479 | return cache[3]; | |
5480 | } | |
668af93f NC |
5481 | |
5482 | if (cache[0] < uoffset) { | |
d8b2e1f9 NC |
5483 | /* The cache already knows part of the way. */ |
5484 | if (cache[0] > uoffset0) { | |
5485 | /* The cache knows more than the passed in pair */ | |
5486 | uoffset0 = cache[0]; | |
5487 | boffset0 = cache[1]; | |
5488 | } | |
5489 | if ((*mgp)->mg_len != -1) { | |
5490 | /* And we know the end too. */ | |
5491 | boffset = boffset0 | |
721e86b6 | 5492 | + sv_pos_u2b_midway(start + boffset0, send, |
d8b2e1f9 NC |
5493 | uoffset - uoffset0, |
5494 | (*mgp)->mg_len - uoffset0); | |
5495 | } else { | |
5496 | boffset = boffset0 | |
721e86b6 | 5497 | + sv_pos_u2b_forwards(start + boffset0, |
d8b2e1f9 NC |
5498 | send, uoffset - uoffset0); |
5499 | } | |
dd7c5fd3 NC |
5500 | } |
5501 | else if (cache[2] < uoffset) { | |
5502 | /* We're between the two cache entries. */ | |
5503 | if (cache[2] > uoffset0) { | |
5504 | /* and the cache knows more than the passed in pair */ | |
5505 | uoffset0 = cache[2]; | |
5506 | boffset0 = cache[3]; | |
5507 | } | |
5508 | ||
668af93f | 5509 | boffset = boffset0 |
721e86b6 | 5510 | + sv_pos_u2b_midway(start + boffset0, |
668af93f NC |
5511 | start + cache[1], |
5512 | uoffset - uoffset0, | |
5513 | cache[0] - uoffset0); | |
dd7c5fd3 NC |
5514 | } else { |
5515 | boffset = boffset0 | |
721e86b6 | 5516 | + sv_pos_u2b_midway(start + boffset0, |
dd7c5fd3 NC |
5517 | start + cache[3], |
5518 | uoffset - uoffset0, | |
5519 | cache[2] - uoffset0); | |
d8b2e1f9 | 5520 | } |
668af93f | 5521 | found = TRUE; |
d8b2e1f9 NC |
5522 | } |
5523 | else if ((*mgp)->mg_len != -1) { | |
75c33c12 NC |
5524 | /* If we can take advantage of a passed in offset, do so. */ |
5525 | /* In fact, offset0 is either 0, or less than offset, so don't | |
5526 | need to worry about the other possibility. */ | |
5527 | boffset = boffset0 | |
721e86b6 | 5528 | + sv_pos_u2b_midway(start + boffset0, send, |
75c33c12 NC |
5529 | uoffset - uoffset0, |
5530 | (*mgp)->mg_len - uoffset0); | |
c336ad0b NC |
5531 | found = TRUE; |
5532 | } | |
28ccbf94 | 5533 | } |
c336ad0b NC |
5534 | |
5535 | if (!found || PL_utf8cache < 0) { | |
75c33c12 | 5536 | const STRLEN real_boffset |
721e86b6 | 5537 | = boffset0 + sv_pos_u2b_forwards(start + boffset0, |
75c33c12 NC |
5538 | send, uoffset - uoffset0); |
5539 | ||
c336ad0b NC |
5540 | if (found && PL_utf8cache < 0) { |
5541 | if (real_boffset != boffset) { | |
5542 | /* Need to turn the assertions off otherwise we may recurse | |
5543 | infinitely while printing error messages. */ | |
5544 | SAVEI8(PL_utf8cache); | |
5545 | PL_utf8cache = 0; | |
f5992bc4 RB |
5546 | Perl_croak(aTHX_ "panic: sv_pos_u2b_cache cache %"UVuf |
5547 | " real %"UVuf" for %"SVf, | |
be2597df | 5548 | (UV) boffset, (UV) real_boffset, SVfARG(sv)); |
c336ad0b NC |
5549 | } |
5550 | } | |
5551 | boffset = real_boffset; | |
28ccbf94 | 5552 | } |
0905937d | 5553 | |
ab455f60 | 5554 | S_utf8_mg_pos_cache_update(aTHX_ sv, mgp, boffset, uoffset, send - start); |
28ccbf94 NC |
5555 | return boffset; |
5556 | } | |
5557 | ||
9564a3bd NC |
5558 | |
5559 | /* | |
5560 | =for apidoc sv_pos_u2b | |
5561 | ||
5562 | Converts the value pointed to by offsetp from a count of UTF-8 chars from | |
5563 | the start of the string, to a count of the equivalent number of bytes; if | |
5564 | lenp is non-zero, it does the same to lenp, but this time starting from | |
5565 | the offset, rather than from the start of the string. Handles magic and | |
5566 | type coercion. | |
5567 | ||
5568 | =cut | |
5569 | */ | |
5570 | ||
5571 | /* | |
5572 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
5573 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5574 | * byte offsets. See also the comments of S_utf8_mg_pos_cache_update(). | |
5575 | * | |
5576 | */ | |
5577 | ||
a0ed51b3 | 5578 | void |
864dbfa3 | 5579 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 5580 | { |
245d4a47 | 5581 | const U8 *start; |
a0ed51b3 LW |
5582 | STRLEN len; |
5583 | ||
5584 | if (!sv) | |
5585 | return; | |
5586 | ||
245d4a47 | 5587 | start = (U8*)SvPV_const(sv, len); |
7e8c5dac | 5588 | if (len) { |
bdf30dd6 NC |
5589 | STRLEN uoffset = (STRLEN) *offsetp; |
5590 | const U8 * const send = start + len; | |
0905937d | 5591 | MAGIC *mg = NULL; |
721e86b6 | 5592 | const STRLEN boffset = sv_pos_u2b_cached(sv, &mg, start, send, |
28ccbf94 | 5593 | uoffset, 0, 0); |
bdf30dd6 NC |
5594 | |
5595 | *offsetp = (I32) boffset; | |
5596 | ||
5597 | if (lenp) { | |
28ccbf94 | 5598 | /* Convert the relative offset to absolute. */ |
721e86b6 AL |
5599 | const STRLEN uoffset2 = uoffset + (STRLEN) *lenp; |
5600 | const STRLEN boffset2 | |
5601 | = sv_pos_u2b_cached(sv, &mg, start, send, uoffset2, | |
28ccbf94 | 5602 | uoffset, boffset) - boffset; |
bdf30dd6 | 5603 | |
28ccbf94 | 5604 | *lenp = boffset2; |
bdf30dd6 | 5605 | } |
7e8c5dac HS |
5606 | } |
5607 | else { | |
5608 | *offsetp = 0; | |
5609 | if (lenp) | |
5610 | *lenp = 0; | |
a0ed51b3 | 5611 | } |
e23c8137 | 5612 | |
a0ed51b3 LW |
5613 | return; |
5614 | } | |
5615 | ||
9564a3bd NC |
5616 | /* Create and update the UTF8 magic offset cache, with the proffered utf8/ |
5617 | byte length pairing. The (byte) length of the total SV is passed in too, | |
5618 | as blen, because for some (more esoteric) SVs, the call to SvPV_const() | |
5619 | may not have updated SvCUR, so we can't rely on reading it directly. | |
5620 | ||
5621 | The proffered utf8/byte length pairing isn't used if the cache already has | |
5622 | two pairs, and swapping either for the proffered pair would increase the | |
5623 | RMS of the intervals between known byte offsets. | |
5624 | ||
5625 | The cache itself consists of 4 STRLEN values | |
5626 | 0: larger UTF-8 offset | |
5627 | 1: corresponding byte offset | |
5628 | 2: smaller UTF-8 offset | |
5629 | 3: corresponding byte offset | |
5630 | ||
5631 | Unused cache pairs have the value 0, 0. | |
5632 | Keeping the cache "backwards" means that the invariant of | |
5633 | cache[0] >= cache[2] is maintained even with empty slots, which means that | |
5634 | the code that uses it doesn't need to worry if only 1 entry has actually | |
5635 | been set to non-zero. It also makes the "position beyond the end of the | |
5636 | cache" logic much simpler, as the first slot is always the one to start | |
5637 | from. | |
645c22ef | 5638 | */ |
ec07b5e0 | 5639 | static void |
ab455f60 NC |
5640 | S_utf8_mg_pos_cache_update(pTHX_ SV *sv, MAGIC **mgp, STRLEN byte, STRLEN utf8, |
5641 | STRLEN blen) | |
ec07b5e0 NC |
5642 | { |
5643 | STRLEN *cache; | |
5644 | if (SvREADONLY(sv)) | |
5645 | return; | |
5646 | ||
5647 | if (!*mgp) { | |
5648 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, (MGVTBL*)&PL_vtbl_utf8, 0, | |
5649 | 0); | |
5650 | (*mgp)->mg_len = -1; | |
5651 | } | |
5652 | assert(*mgp); | |
5653 | ||
5654 | if (!(cache = (STRLEN *)(*mgp)->mg_ptr)) { | |
5655 | Newxz(cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
5656 | (*mgp)->mg_ptr = (char *) cache; | |
5657 | } | |
5658 | assert(cache); | |
5659 | ||
5660 | if (PL_utf8cache < 0) { | |
ef816a78 | 5661 | const U8 *start = (const U8 *) SvPVX_const(sv); |
6448472a | 5662 | const STRLEN realutf8 = utf8_length(start, start + byte); |
ec07b5e0 NC |
5663 | |
5664 | if (realutf8 != utf8) { | |
5665 | /* Need to turn the assertions off otherwise we may recurse | |
5666 | infinitely while printing error messages. */ | |
5667 | SAVEI8(PL_utf8cache); | |
5668 | PL_utf8cache = 0; | |
f5992bc4 | 5669 | Perl_croak(aTHX_ "panic: utf8_mg_pos_cache_update cache %"UVuf |
be2597df | 5670 | " real %"UVuf" for %"SVf, (UV) utf8, (UV) realutf8, SVfARG(sv)); |
ec07b5e0 NC |
5671 | } |
5672 | } | |
ab455f60 NC |
5673 | |
5674 | /* Cache is held with the later position first, to simplify the code | |
5675 | that deals with unbounded ends. */ | |
5676 | ||
5677 | ASSERT_UTF8_CACHE(cache); | |
5678 | if (cache[1] == 0) { | |
5679 | /* Cache is totally empty */ | |
5680 | cache[0] = utf8; | |
5681 | cache[1] = byte; | |
5682 | } else if (cache[3] == 0) { | |
5683 | if (byte > cache[1]) { | |
5684 | /* New one is larger, so goes first. */ | |
5685 | cache[2] = cache[0]; | |
5686 | cache[3] = cache[1]; | |
5687 | cache[0] = utf8; | |
5688 | cache[1] = byte; | |
5689 | } else { | |
5690 | cache[2] = utf8; | |
5691 | cache[3] = byte; | |
5692 | } | |
5693 | } else { | |
5694 | #define THREEWAY_SQUARE(a,b,c,d) \ | |
5695 | ((float)((d) - (c))) * ((float)((d) - (c))) \ | |
5696 | + ((float)((c) - (b))) * ((float)((c) - (b))) \ | |
5697 | + ((float)((b) - (a))) * ((float)((b) - (a))) | |
5698 | ||
5699 | /* Cache has 2 slots in use, and we know three potential pairs. | |
5700 | Keep the two that give the lowest RMS distance. Do the | |
5701 | calcualation in bytes simply because we always know the byte | |
5702 | length. squareroot has the same ordering as the positive value, | |
5703 | so don't bother with the actual square root. */ | |
5704 | const float existing = THREEWAY_SQUARE(0, cache[3], cache[1], blen); | |
5705 | if (byte > cache[1]) { | |
5706 | /* New position is after the existing pair of pairs. */ | |
5707 | const float keep_earlier | |
5708 | = THREEWAY_SQUARE(0, cache[3], byte, blen); | |
5709 | const float keep_later | |
5710 | = THREEWAY_SQUARE(0, cache[1], byte, blen); | |
5711 | ||
5712 | if (keep_later < keep_earlier) { | |
5713 | if (keep_later < existing) { | |
5714 | cache[2] = cache[0]; | |
5715 | cache[3] = cache[1]; | |
5716 | cache[0] = utf8; | |
5717 | cache[1] = byte; | |
5718 | } | |
5719 | } | |
5720 | else { | |
5721 | if (keep_earlier < existing) { | |
5722 | cache[0] = utf8; | |
5723 | cache[1] = byte; | |
5724 | } | |
5725 | } | |
5726 | } | |
57d7fbf1 NC |
5727 | else if (byte > cache[3]) { |
5728 | /* New position is between the existing pair of pairs. */ | |
5729 | const float keep_earlier | |
5730 | = THREEWAY_SQUARE(0, cache[3], byte, blen); | |
5731 | const float keep_later | |
5732 | = THREEWAY_SQUARE(0, byte, cache[1], blen); | |
5733 | ||
5734 | if (keep_later < keep_earlier) { | |
5735 | if (keep_later < existing) { | |
5736 | cache[2] = utf8; | |
5737 | cache[3] = byte; | |
5738 | } | |
5739 | } | |
5740 | else { | |
5741 | if (keep_earlier < existing) { | |
5742 | cache[0] = utf8; | |
5743 | cache[1] = byte; | |
5744 | } | |
5745 | } | |
5746 | } | |
5747 | else { | |
5748 | /* New position is before the existing pair of pairs. */ | |
5749 | const float keep_earlier | |
5750 | = THREEWAY_SQUARE(0, byte, cache[3], blen); | |
5751 | const float keep_later | |
5752 | = THREEWAY_SQUARE(0, byte, cache[1], blen); | |
5753 | ||
5754 | if (keep_later < keep_earlier) { | |
5755 | if (keep_later < existing) { | |
5756 | cache[2] = utf8; | |
5757 | cache[3] = byte; | |
5758 | } | |
5759 | } | |
5760 | else { | |
5761 | if (keep_earlier < existing) { | |
5762 | cache[0] = cache[2]; | |
5763 | cache[1] = cache[3]; | |
5764 | cache[2] = utf8; | |
5765 | cache[3] = byte; | |
5766 | } | |
5767 | } | |
5768 | } | |
ab455f60 | 5769 | } |
0905937d | 5770 | ASSERT_UTF8_CACHE(cache); |
ec07b5e0 NC |
5771 | } |
5772 | ||
ec07b5e0 | 5773 | /* We already know all of the way, now we may be able to walk back. The same |
25a8a4ef NC |
5774 | assumption is made as in S_sv_pos_u2b_midway(), namely that walking |
5775 | backward is half the speed of walking forward. */ | |
ec07b5e0 NC |
5776 | static STRLEN |
5777 | S_sv_pos_b2u_midway(pTHX_ const U8 *s, const U8 *const target, const U8 *end, | |
5778 | STRLEN endu) | |
5779 | { | |
5780 | const STRLEN forw = target - s; | |
5781 | STRLEN backw = end - target; | |
5782 | ||
5783 | if (forw < 2 * backw) { | |
6448472a | 5784 | return utf8_length(s, target); |
ec07b5e0 NC |
5785 | } |
5786 | ||
5787 | while (end > target) { | |
5788 | end--; | |
5789 | while (UTF8_IS_CONTINUATION(*end)) { | |
5790 | end--; | |
5791 | } | |
5792 | endu--; | |
5793 | } | |
5794 | return endu; | |
5795 | } | |
5796 | ||
9564a3bd NC |
5797 | /* |
5798 | =for apidoc sv_pos_b2u | |
5799 | ||
5800 | Converts the value pointed to by offsetp from a count of bytes from the | |
5801 | start of the string, to a count of the equivalent number of UTF-8 chars. | |
5802 | Handles magic and type coercion. | |
5803 | ||
5804 | =cut | |
5805 | */ | |
5806 | ||
5807 | /* | |
5808 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
5809 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5810 | * byte offsets. | |
5811 | * | |
5812 | */ | |
a0ed51b3 | 5813 | void |
7e8c5dac | 5814 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 5815 | { |
83003860 | 5816 | const U8* s; |
ec07b5e0 | 5817 | const STRLEN byte = *offsetp; |
7087a21c | 5818 | STRLEN len = 0; /* Actually always set, but let's keep gcc happy. */ |
ab455f60 | 5819 | STRLEN blen; |
ec07b5e0 NC |
5820 | MAGIC* mg = NULL; |
5821 | const U8* send; | |
a922f900 | 5822 | bool found = FALSE; |
a0ed51b3 LW |
5823 | |
5824 | if (!sv) | |
5825 | return; | |
5826 | ||
ab455f60 | 5827 | s = (const U8*)SvPV_const(sv, blen); |
7e8c5dac | 5828 | |
ab455f60 | 5829 | if (blen < byte) |
ec07b5e0 | 5830 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac | 5831 | |
ec07b5e0 | 5832 | send = s + byte; |
a67d7df9 | 5833 | |
ffca234a NC |
5834 | if (SvMAGICAL(sv) && !SvREADONLY(sv) && PL_utf8cache |
5835 | && (mg = mg_find(sv, PERL_MAGIC_utf8))) { | |
5836 | if (mg->mg_ptr) { | |
d4c19fe8 | 5837 | STRLEN * const cache = (STRLEN *) mg->mg_ptr; |
b9f984a5 | 5838 | if (cache[1] == byte) { |
ec07b5e0 NC |
5839 | /* An exact match. */ |
5840 | *offsetp = cache[0]; | |
ec07b5e0 | 5841 | return; |
7e8c5dac | 5842 | } |
ab455f60 NC |
5843 | if (cache[3] == byte) { |
5844 | /* An exact match. */ | |
5845 | *offsetp = cache[2]; | |
5846 | return; | |
5847 | } | |
668af93f NC |
5848 | |
5849 | if (cache[1] < byte) { | |
ec07b5e0 | 5850 | /* We already know part of the way. */ |
b9f984a5 NC |
5851 | if (mg->mg_len != -1) { |
5852 | /* Actually, we know the end too. */ | |
5853 | len = cache[0] | |
5854 | + S_sv_pos_b2u_midway(aTHX_ s + cache[1], send, | |
ab455f60 | 5855 | s + blen, mg->mg_len - cache[0]); |
b9f984a5 | 5856 | } else { |
6448472a | 5857 | len = cache[0] + utf8_length(s + cache[1], send); |
b9f984a5 | 5858 | } |
7e8c5dac | 5859 | } |
9f985e4c NC |
5860 | else if (cache[3] < byte) { |
5861 | /* We're between the two cached pairs, so we do the calculation | |
5862 | offset by the byte/utf-8 positions for the earlier pair, | |
5863 | then add the utf-8 characters from the string start to | |
5864 | there. */ | |
5865 | len = S_sv_pos_b2u_midway(aTHX_ s + cache[3], send, | |
5866 | s + cache[1], cache[0] - cache[2]) | |
5867 | + cache[2]; | |
5868 | ||
5869 | } | |
5870 | else { /* cache[3] > byte */ | |
5871 | len = S_sv_pos_b2u_midway(aTHX_ s, send, s + cache[3], | |
5872 | cache[2]); | |
7e8c5dac | 5873 | |
7e8c5dac | 5874 | } |
ec07b5e0 | 5875 | ASSERT_UTF8_CACHE(cache); |
a922f900 | 5876 | found = TRUE; |
ffca234a | 5877 | } else if (mg->mg_len != -1) { |
ab455f60 | 5878 | len = S_sv_pos_b2u_midway(aTHX_ s, send, s + blen, mg->mg_len); |
a922f900 | 5879 | found = TRUE; |
7e8c5dac | 5880 | } |
a0ed51b3 | 5881 | } |
a922f900 | 5882 | if (!found || PL_utf8cache < 0) { |
6448472a | 5883 | const STRLEN real_len = utf8_length(s, send); |
a922f900 NC |
5884 | |
5885 | if (found && PL_utf8cache < 0) { | |
5886 | if (len != real_len) { | |
5887 | /* Need to turn the assertions off otherwise we may recurse | |
5888 | infinitely while printing error messages. */ | |
5889 | SAVEI8(PL_utf8cache); | |
5890 | PL_utf8cache = 0; | |
f5992bc4 RB |
5891 | Perl_croak(aTHX_ "panic: sv_pos_b2u cache %"UVuf |
5892 | " real %"UVuf" for %"SVf, | |
be2597df | 5893 | (UV) len, (UV) real_len, SVfARG(sv)); |
a922f900 NC |
5894 | } |
5895 | } | |
5896 | len = real_len; | |
ec07b5e0 NC |
5897 | } |
5898 | *offsetp = len; | |
5899 | ||
ab455f60 | 5900 | S_utf8_mg_pos_cache_update(aTHX_ sv, &mg, byte, len, blen); |
a0ed51b3 LW |
5901 | } |
5902 | ||
954c1994 GS |
5903 | /* |
5904 | =for apidoc sv_eq | |
5905 | ||
5906 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
5907 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
5908 | coerce its args to strings if necessary. | |
954c1994 GS |
5909 | |
5910 | =cut | |
5911 | */ | |
5912 | ||
79072805 | 5913 | I32 |
e01b9e88 | 5914 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 5915 | { |
97aff369 | 5916 | dVAR; |
e1ec3a88 | 5917 | const char *pv1; |
463ee0b2 | 5918 | STRLEN cur1; |
e1ec3a88 | 5919 | const char *pv2; |
463ee0b2 | 5920 | STRLEN cur2; |
e01b9e88 | 5921 | I32 eq = 0; |
bd61b366 | 5922 | char *tpv = NULL; |
a0714e2c | 5923 | SV* svrecode = NULL; |
79072805 | 5924 | |
e01b9e88 | 5925 | if (!sv1) { |
79072805 LW |
5926 | pv1 = ""; |
5927 | cur1 = 0; | |
5928 | } | |
ced497e2 YST |
5929 | else { |
5930 | /* if pv1 and pv2 are the same, second SvPV_const call may | |
5931 | * invalidate pv1, so we may need to make a copy */ | |
5932 | if (sv1 == sv2 && (SvTHINKFIRST(sv1) || SvGMAGICAL(sv1))) { | |
5933 | pv1 = SvPV_const(sv1, cur1); | |
5934 | sv1 = sv_2mortal(newSVpvn(pv1, cur1)); | |
5935 | if (SvUTF8(sv2)) SvUTF8_on(sv1); | |
5936 | } | |
4d84ee25 | 5937 | pv1 = SvPV_const(sv1, cur1); |
ced497e2 | 5938 | } |
79072805 | 5939 | |
e01b9e88 SC |
5940 | if (!sv2){ |
5941 | pv2 = ""; | |
5942 | cur2 = 0; | |
92d29cee | 5943 | } |
e01b9e88 | 5944 | else |
4d84ee25 | 5945 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 5946 | |
cf48d248 | 5947 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
5948 | /* Differing utf8ness. |
5949 | * Do not UTF8size the comparands as a side-effect. */ | |
5950 | if (PL_encoding) { | |
5951 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
5952 | svrecode = newSVpvn(pv2, cur2); |
5953 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 5954 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
5955 | } |
5956 | else { | |
553e1bcc AT |
5957 | svrecode = newSVpvn(pv1, cur1); |
5958 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 5959 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
5960 | } |
5961 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
5962 | if (cur1 != cur2) { |
5963 | SvREFCNT_dec(svrecode); | |
799ef3cb | 5964 | return FALSE; |
0a1bd7ac | 5965 | } |
799ef3cb JH |
5966 | } |
5967 | else { | |
5968 | bool is_utf8 = TRUE; | |
5969 | ||
5970 | if (SvUTF8(sv1)) { | |
5971 | /* sv1 is the UTF-8 one, | |
5972 | * if is equal it must be downgrade-able */ | |
9d4ba2ae | 5973 | char * const pv = (char*)bytes_from_utf8((const U8*)pv1, |
799ef3cb JH |
5974 | &cur1, &is_utf8); |
5975 | if (pv != pv1) | |
553e1bcc | 5976 | pv1 = tpv = pv; |
799ef3cb JH |
5977 | } |
5978 | else { | |
5979 | /* sv2 is the UTF-8 one, | |
5980 | * if is equal it must be downgrade-able */ | |
9d4ba2ae | 5981 | char * const pv = (char *)bytes_from_utf8((const U8*)pv2, |
799ef3cb JH |
5982 | &cur2, &is_utf8); |
5983 | if (pv != pv2) | |
553e1bcc | 5984 | pv2 = tpv = pv; |
799ef3cb JH |
5985 | } |
5986 | if (is_utf8) { | |
5987 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 5988 | assert (tpv == 0); |
799ef3cb JH |
5989 | return FALSE; |
5990 | } | |
5991 | } | |
cf48d248 JH |
5992 | } |
5993 | ||
5994 | if (cur1 == cur2) | |
765f542d | 5995 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 5996 | |
b37c2d43 | 5997 | SvREFCNT_dec(svrecode); |
553e1bcc AT |
5998 | if (tpv) |
5999 | Safefree(tpv); | |
cf48d248 | 6000 | |
e01b9e88 | 6001 | return eq; |
79072805 LW |
6002 | } |
6003 | ||
954c1994 GS |
6004 | /* |
6005 | =for apidoc sv_cmp | |
6006 | ||
6007 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6008 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6009 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6010 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6011 | |
6012 | =cut | |
6013 | */ | |
6014 | ||
79072805 | 6015 | I32 |
e01b9e88 | 6016 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6017 | { |
97aff369 | 6018 | dVAR; |
560a288e | 6019 | STRLEN cur1, cur2; |
e1ec3a88 | 6020 | const char *pv1, *pv2; |
bd61b366 | 6021 | char *tpv = NULL; |
cf48d248 | 6022 | I32 cmp; |
a0714e2c | 6023 | SV *svrecode = NULL; |
560a288e | 6024 | |
e01b9e88 SC |
6025 | if (!sv1) { |
6026 | pv1 = ""; | |
560a288e GS |
6027 | cur1 = 0; |
6028 | } | |
e01b9e88 | 6029 | else |
4d84ee25 | 6030 | pv1 = SvPV_const(sv1, cur1); |
560a288e | 6031 | |
553e1bcc | 6032 | if (!sv2) { |
e01b9e88 | 6033 | pv2 = ""; |
560a288e GS |
6034 | cur2 = 0; |
6035 | } | |
e01b9e88 | 6036 | else |
4d84ee25 | 6037 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 6038 | |
cf48d248 | 6039 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6040 | /* Differing utf8ness. |
6041 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6042 | if (SvUTF8(sv1)) { |
799ef3cb | 6043 | if (PL_encoding) { |
553e1bcc AT |
6044 | svrecode = newSVpvn(pv2, cur2); |
6045 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6046 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
6047 | } |
6048 | else { | |
e1ec3a88 | 6049 | pv2 = tpv = (char*)bytes_to_utf8((const U8*)pv2, &cur2); |
799ef3cb | 6050 | } |
cf48d248 JH |
6051 | } |
6052 | else { | |
799ef3cb | 6053 | if (PL_encoding) { |
553e1bcc AT |
6054 | svrecode = newSVpvn(pv1, cur1); |
6055 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6056 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
6057 | } |
6058 | else { | |
e1ec3a88 | 6059 | pv1 = tpv = (char*)bytes_to_utf8((const U8*)pv1, &cur1); |
799ef3cb | 6060 | } |
cf48d248 JH |
6061 | } |
6062 | } | |
6063 | ||
e01b9e88 | 6064 | if (!cur1) { |
cf48d248 | 6065 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6066 | } else if (!cur2) { |
cf48d248 JH |
6067 | cmp = 1; |
6068 | } else { | |
e1ec3a88 | 6069 | const I32 retval = memcmp((const void*)pv1, (const void*)pv2, cur1 < cur2 ? cur1 : cur2); |
e01b9e88 SC |
6070 | |
6071 | if (retval) { | |
cf48d248 | 6072 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6073 | } else if (cur1 == cur2) { |
cf48d248 JH |
6074 | cmp = 0; |
6075 | } else { | |
6076 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6077 | } |
cf48d248 | 6078 | } |
16660edb | 6079 | |
b37c2d43 | 6080 | SvREFCNT_dec(svrecode); |
553e1bcc AT |
6081 | if (tpv) |
6082 | Safefree(tpv); | |
cf48d248 JH |
6083 | |
6084 | return cmp; | |
bbce6d69 | 6085 | } |
16660edb | 6086 | |
c461cf8f JH |
6087 | /* |
6088 | =for apidoc sv_cmp_locale | |
6089 | ||
645c22ef DM |
6090 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6091 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6092 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6093 | |
6094 | =cut | |
6095 | */ | |
6096 | ||
bbce6d69 | 6097 | I32 |
864dbfa3 | 6098 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6099 | { |
97aff369 | 6100 | dVAR; |
36477c24 | 6101 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6102 | |
bbce6d69 | 6103 | char *pv1, *pv2; |
6104 | STRLEN len1, len2; | |
6105 | I32 retval; | |
16660edb | 6106 | |
3280af22 | 6107 | if (PL_collation_standard) |
bbce6d69 | 6108 | goto raw_compare; |
16660edb | 6109 | |
bbce6d69 | 6110 | len1 = 0; |
8ac85365 | 6111 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6112 | len2 = 0; |
8ac85365 | 6113 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6114 | |
bbce6d69 | 6115 | if (!pv1 || !len1) { |
6116 | if (pv2 && len2) | |
6117 | return -1; | |
6118 | else | |
6119 | goto raw_compare; | |
6120 | } | |
6121 | else { | |
6122 | if (!pv2 || !len2) | |
6123 | return 1; | |
6124 | } | |
16660edb | 6125 | |
bbce6d69 | 6126 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6127 | |
bbce6d69 | 6128 | if (retval) |
16660edb | 6129 | return retval < 0 ? -1 : 1; |
6130 | ||
bbce6d69 | 6131 | /* |
6132 | * When the result of collation is equality, that doesn't mean | |
6133 | * that there are no differences -- some locales exclude some | |
6134 | * characters from consideration. So to avoid false equalities, | |
6135 | * we use the raw string as a tiebreaker. | |
6136 | */ | |
16660edb | 6137 | |
bbce6d69 | 6138 | raw_compare: |
5f66b61c | 6139 | /*FALLTHROUGH*/ |
16660edb | 6140 | |
36477c24 | 6141 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6142 | |
bbce6d69 | 6143 | return sv_cmp(sv1, sv2); |
6144 | } | |
79072805 | 6145 | |
645c22ef | 6146 | |
36477c24 | 6147 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6148 | |
7a4c00b4 | 6149 | /* |
645c22ef DM |
6150 | =for apidoc sv_collxfrm |
6151 | ||
6152 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6153 | ||
6154 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6155 | scalar data of the variable, but transformed to such a format that a normal | |
6156 | memory comparison can be used to compare the data according to the locale | |
6157 | settings. | |
6158 | ||
6159 | =cut | |
6160 | */ | |
6161 | ||
bbce6d69 | 6162 | char * |
864dbfa3 | 6163 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6164 | { |
97aff369 | 6165 | dVAR; |
7a4c00b4 | 6166 | MAGIC *mg; |
16660edb | 6167 | |
14befaf4 | 6168 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6169 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
93524f2b NC |
6170 | const char *s; |
6171 | char *xf; | |
bbce6d69 | 6172 | STRLEN len, xlen; |
6173 | ||
7a4c00b4 | 6174 | if (mg) |
6175 | Safefree(mg->mg_ptr); | |
93524f2b | 6176 | s = SvPV_const(sv, len); |
bbce6d69 | 6177 | if ((xf = mem_collxfrm(s, len, &xlen))) { |
ff0cee69 | 6178 | if (SvREADONLY(sv)) { |
6179 | SAVEFREEPV(xf); | |
6180 | *nxp = xlen; | |
3280af22 | 6181 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6182 | } |
7a4c00b4 | 6183 | if (! mg) { |
d83f0a82 NC |
6184 | #ifdef PERL_OLD_COPY_ON_WRITE |
6185 | if (SvIsCOW(sv)) | |
6186 | sv_force_normal_flags(sv, 0); | |
6187 | #endif | |
6188 | mg = sv_magicext(sv, 0, PERL_MAGIC_collxfrm, &PL_vtbl_collxfrm, | |
6189 | 0, 0); | |
7a4c00b4 | 6190 | assert(mg); |
bbce6d69 | 6191 | } |
7a4c00b4 | 6192 | mg->mg_ptr = xf; |
565764a8 | 6193 | mg->mg_len = xlen; |
7a4c00b4 | 6194 | } |
6195 | else { | |
ff0cee69 | 6196 | if (mg) { |
6197 | mg->mg_ptr = NULL; | |
565764a8 | 6198 | mg->mg_len = -1; |
ff0cee69 | 6199 | } |
bbce6d69 | 6200 | } |
6201 | } | |
7a4c00b4 | 6202 | if (mg && mg->mg_ptr) { |
565764a8 | 6203 | *nxp = mg->mg_len; |
3280af22 | 6204 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6205 | } |
6206 | else { | |
6207 | *nxp = 0; | |
6208 | return NULL; | |
16660edb | 6209 | } |
79072805 LW |
6210 | } |
6211 | ||
36477c24 | 6212 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6213 | |
c461cf8f JH |
6214 | /* |
6215 | =for apidoc sv_gets | |
6216 | ||
6217 | Get a line from the filehandle and store it into the SV, optionally | |
6218 | appending to the currently-stored string. | |
6219 | ||
6220 | =cut | |
6221 | */ | |
6222 | ||
79072805 | 6223 | char * |
864dbfa3 | 6224 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6225 | { |
97aff369 | 6226 | dVAR; |
e1ec3a88 | 6227 | const char *rsptr; |
c07a80fd | 6228 | STRLEN rslen; |
6229 | register STDCHAR rslast; | |
6230 | register STDCHAR *bp; | |
6231 | register I32 cnt; | |
9c5ffd7c | 6232 | I32 i = 0; |
8bfdd7d9 | 6233 | I32 rspara = 0; |
c07a80fd | 6234 | |
bc44a8a2 NC |
6235 | if (SvTHINKFIRST(sv)) |
6236 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6237 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6238 | from <>. | |
6239 | However, perlbench says it's slower, because the existing swipe code | |
6240 | is faster than copy on write. | |
6241 | Swings and roundabouts. */ | |
862a34c6 | 6242 | SvUPGRADE(sv, SVt_PV); |
99491443 | 6243 | |
ff68c719 | 6244 | SvSCREAM_off(sv); |
efd8b2ba AE |
6245 | |
6246 | if (append) { | |
6247 | if (PerlIO_isutf8(fp)) { | |
6248 | if (!SvUTF8(sv)) { | |
6249 | sv_utf8_upgrade_nomg(sv); | |
6250 | sv_pos_u2b(sv,&append,0); | |
6251 | } | |
6252 | } else if (SvUTF8(sv)) { | |
561b68a9 | 6253 | SV * const tsv = newSV(0); |
efd8b2ba AE |
6254 | sv_gets(tsv, fp, 0); |
6255 | sv_utf8_upgrade_nomg(tsv); | |
6256 | SvCUR_set(sv,append); | |
6257 | sv_catsv(sv,tsv); | |
6258 | sv_free(tsv); | |
6259 | goto return_string_or_null; | |
6260 | } | |
6261 | } | |
6262 | ||
6263 | SvPOK_only(sv); | |
6264 | if (PerlIO_isutf8(fp)) | |
6265 | SvUTF8_on(sv); | |
c07a80fd | 6266 | |
923e4eb5 | 6267 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
6268 | /* we always read code in line mode */ |
6269 | rsptr = "\n"; | |
6270 | rslen = 1; | |
6271 | } | |
6272 | else if (RsSNARF(PL_rs)) { | |
7a5fa8a2 | 6273 | /* If it is a regular disk file use size from stat() as estimate |
acbd132f JH |
6274 | of amount we are going to read -- may result in mallocing |
6275 | more memory than we really need if the layers below reduce | |
6276 | the size we read (e.g. CRLF or a gzip layer). | |
e468d35b | 6277 | */ |
e311fd51 | 6278 | Stat_t st; |
e468d35b | 6279 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
f54cb97a | 6280 | const Off_t offset = PerlIO_tell(fp); |
58f1856e | 6281 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6282 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6283 | } | |
6284 | } | |
c07a80fd | 6285 | rsptr = NULL; |
6286 | rslen = 0; | |
6287 | } | |
3280af22 | 6288 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6289 | I32 bytesread; |
5b2b9c68 | 6290 | char *buffer; |
acbd132f | 6291 | U32 recsize; |
5b2b9c68 HM |
6292 | |
6293 | /* Grab the size of the record we're getting */ | |
acbd132f | 6294 | recsize = SvUV(SvRV(PL_rs)); /* RsRECORD() guarantees > 0. */ |
e311fd51 | 6295 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6296 | /* Go yank in */ |
6297 | #ifdef VMS | |
6298 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6299 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6300 | /* doing, but we've got no other real choice - except avoid stdio |
6301 | as implementation - perhaps write a :vms layer ? | |
6302 | */ | |
5b2b9c68 HM |
6303 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6304 | #else | |
6305 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6306 | #endif | |
27e6ca2d AE |
6307 | if (bytesread < 0) |
6308 | bytesread = 0; | |
e311fd51 | 6309 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6310 | buffer[bytesread] = '\0'; |
efd8b2ba | 6311 | goto return_string_or_null; |
5b2b9c68 | 6312 | } |
3280af22 | 6313 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6314 | rsptr = "\n\n"; |
6315 | rslen = 2; | |
8bfdd7d9 | 6316 | rspara = 1; |
c07a80fd | 6317 | } |
7d59b7e4 NIS |
6318 | else { |
6319 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6320 | if (PerlIO_isutf8(fp)) { | |
6321 | rsptr = SvPVutf8(PL_rs, rslen); | |
6322 | } | |
6323 | else { | |
6324 | if (SvUTF8(PL_rs)) { | |
6325 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
6326 | Perl_croak(aTHX_ "Wide character in $/"); | |
6327 | } | |
6328 | } | |
93524f2b | 6329 | rsptr = SvPV_const(PL_rs, rslen); |
7d59b7e4 NIS |
6330 | } |
6331 | } | |
6332 | ||
c07a80fd | 6333 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
6334 | ||
8bfdd7d9 | 6335 | if (rspara) { /* have to do this both before and after */ |
79072805 | 6336 | do { /* to make sure file boundaries work right */ |
760ac839 | 6337 | if (PerlIO_eof(fp)) |
a0d0e21e | 6338 | return 0; |
760ac839 | 6339 | i = PerlIO_getc(fp); |
79072805 | 6340 | if (i != '\n') { |
a0d0e21e LW |
6341 | if (i == -1) |
6342 | return 0; | |
760ac839 | 6343 | PerlIO_ungetc(fp,i); |
79072805 LW |
6344 | break; |
6345 | } | |
6346 | } while (i != EOF); | |
6347 | } | |
c07a80fd | 6348 | |
760ac839 LW |
6349 | /* See if we know enough about I/O mechanism to cheat it ! */ |
6350 | ||
6351 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 6352 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
6353 | enough here - and may even be a macro allowing compile |
6354 | time optimization. | |
6355 | */ | |
6356 | ||
6357 | if (PerlIO_fast_gets(fp)) { | |
6358 | ||
6359 | /* | |
6360 | * We're going to steal some values from the stdio struct | |
6361 | * and put EVERYTHING in the innermost loop into registers. | |
6362 | */ | |
6363 | register STDCHAR *ptr; | |
6364 | STRLEN bpx; | |
6365 | I32 shortbuffered; | |
6366 | ||
16660edb | 6367 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
6368 | /* An ungetc()d char is handled separately from the regular | |
6369 | * buffer, so we getc() it back out and stuff it in the buffer. | |
6370 | */ | |
6371 | i = PerlIO_getc(fp); | |
6372 | if (i == EOF) return 0; | |
6373 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
6374 | (*fp)->_cnt++; | |
6375 | #endif | |
c07a80fd | 6376 | |
c2960299 | 6377 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 6378 | |
a20bf0c3 | 6379 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b | 6380 | /* make sure we have the room */ |
7a5fa8a2 | 6381 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { |
e468d35b | 6382 | /* Not room for all of it |
7a5fa8a2 | 6383 | if we are looking for a separator and room for some |
e468d35b NIS |
6384 | */ |
6385 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7a5fa8a2 | 6386 | /* just process what we have room for */ |
79072805 LW |
6387 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
6388 | cnt -= shortbuffered; | |
6389 | } | |
6390 | else { | |
6391 | shortbuffered = 0; | |
bbce6d69 | 6392 | /* remember that cnt can be negative */ |
eb160463 | 6393 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
6394 | } |
6395 | } | |
7a5fa8a2 | 6396 | else |
79072805 | 6397 | shortbuffered = 0; |
3f7c398e | 6398 | bp = (STDCHAR*)SvPVX_const(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 6399 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 6400 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6401 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 6402 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 6403 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6404 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6405 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
6406 | for (;;) { |
6407 | screamer: | |
93a17b20 | 6408 | if (cnt > 0) { |
c07a80fd | 6409 | if (rslen) { |
760ac839 LW |
6410 | while (cnt > 0) { /* this | eat */ |
6411 | cnt--; | |
c07a80fd | 6412 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
6413 | goto thats_all_folks; /* screams | sed :-) */ | |
6414 | } | |
6415 | } | |
6416 | else { | |
1c846c1f NIS |
6417 | Copy(ptr, bp, cnt, char); /* this | eat */ |
6418 | bp += cnt; /* screams | dust */ | |
c07a80fd | 6419 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 6420 | cnt = 0; |
93a17b20 | 6421 | } |
79072805 LW |
6422 | } |
6423 | ||
748a9306 | 6424 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
6425 | cnt = shortbuffered; |
6426 | shortbuffered = 0; | |
3f7c398e | 6427 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
6428 | SvCUR_set(sv, bpx); |
6429 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
3f7c398e | 6430 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
6431 | continue; |
6432 | } | |
6433 | ||
16660edb | 6434 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
6435 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
6436 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 6437 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 6438 | #if 0 |
16660edb | 6439 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6440 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6441 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6442 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6443 | #endif |
1c846c1f | 6444 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 6445 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
6446 | another abstraction. */ | |
760ac839 | 6447 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 6448 | #if 0 |
16660edb | 6449 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6450 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6451 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6452 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6453 | #endif |
a20bf0c3 JH |
6454 | cnt = PerlIO_get_cnt(fp); |
6455 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 6456 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6457 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 6458 | |
748a9306 LW |
6459 | if (i == EOF) /* all done for ever? */ |
6460 | goto thats_really_all_folks; | |
6461 | ||
3f7c398e | 6462 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
6463 | SvCUR_set(sv, bpx); |
6464 | SvGROW(sv, bpx + cnt + 2); | |
3f7c398e | 6465 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
c07a80fd | 6466 | |
eb160463 | 6467 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 6468 | |
c07a80fd | 6469 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 6470 | goto thats_all_folks; |
79072805 LW |
6471 | } |
6472 | ||
6473 | thats_all_folks: | |
3f7c398e | 6474 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX_const(sv)) < rslen) || |
36477c24 | 6475 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 6476 | goto screamer; /* go back to the fray */ |
79072805 LW |
6477 | thats_really_all_folks: |
6478 | if (shortbuffered) | |
6479 | cnt += shortbuffered; | |
16660edb | 6480 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6481 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 6482 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 6483 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6484 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6485 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6486 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 6487 | *bp = '\0'; |
3f7c398e | 6488 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX_const(sv)); /* set length */ |
16660edb | 6489 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 6490 | "Screamer: done, len=%ld, string=|%.*s|\n", |
3f7c398e | 6491 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX_const(sv))); |
760ac839 LW |
6492 | } |
6493 | else | |
79072805 | 6494 | { |
6edd2cd5 | 6495 | /*The big, slow, and stupid way. */ |
27da23d5 | 6496 | #ifdef USE_HEAP_INSTEAD_OF_STACK /* Even slower way. */ |
cbbf8932 | 6497 | STDCHAR *buf = NULL; |
a02a5408 | 6498 | Newx(buf, 8192, STDCHAR); |
6edd2cd5 | 6499 | assert(buf); |
4d2c4e07 | 6500 | #else |
6edd2cd5 | 6501 | STDCHAR buf[8192]; |
4d2c4e07 | 6502 | #endif |
79072805 | 6503 | |
760ac839 | 6504 | screamer2: |
c07a80fd | 6505 | if (rslen) { |
00b6aa41 | 6506 | register const STDCHAR * const bpe = buf + sizeof(buf); |
760ac839 | 6507 | bp = buf; |
eb160463 | 6508 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
6509 | ; /* keep reading */ |
6510 | cnt = bp - buf; | |
c07a80fd | 6511 | } |
6512 | else { | |
760ac839 | 6513 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 6514 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
6515 | * both args of ?: operator, causing EOF to change into 255 | |
6516 | */ | |
37be0adf | 6517 | if (cnt > 0) |
cbe9e203 JH |
6518 | i = (U8)buf[cnt - 1]; |
6519 | else | |
37be0adf | 6520 | i = EOF; |
c07a80fd | 6521 | } |
79072805 | 6522 | |
cbe9e203 JH |
6523 | if (cnt < 0) |
6524 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
6525 | if (append) | |
6526 | sv_catpvn(sv, (char *) buf, cnt); | |
6527 | else | |
6528 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 6529 | |
6530 | if (i != EOF && /* joy */ | |
6531 | (!rslen || | |
6532 | SvCUR(sv) < rslen || | |
3f7c398e | 6533 | memNE(SvPVX_const(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
6534 | { |
6535 | append = -1; | |
63e4d877 CS |
6536 | /* |
6537 | * If we're reading from a TTY and we get a short read, | |
6538 | * indicating that the user hit his EOF character, we need | |
6539 | * to notice it now, because if we try to read from the TTY | |
6540 | * again, the EOF condition will disappear. | |
6541 | * | |
6542 | * The comparison of cnt to sizeof(buf) is an optimization | |
6543 | * that prevents unnecessary calls to feof(). | |
6544 | * | |
6545 | * - jik 9/25/96 | |
6546 | */ | |
bb7a0f54 | 6547 | if (!(cnt < (I32)sizeof(buf) && PerlIO_eof(fp))) |
63e4d877 | 6548 | goto screamer2; |
79072805 | 6549 | } |
6edd2cd5 | 6550 | |
27da23d5 | 6551 | #ifdef USE_HEAP_INSTEAD_OF_STACK |
6edd2cd5 JH |
6552 | Safefree(buf); |
6553 | #endif | |
79072805 LW |
6554 | } |
6555 | ||
8bfdd7d9 | 6556 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 6557 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 6558 | i = PerlIO_getc(fp); |
79072805 | 6559 | if (i != '\n') { |
760ac839 | 6560 | PerlIO_ungetc(fp,i); |
79072805 LW |
6561 | break; |
6562 | } | |
6563 | } | |
6564 | } | |
c07a80fd | 6565 | |
efd8b2ba | 6566 | return_string_or_null: |
bd61b366 | 6567 | return (SvCUR(sv) - append) ? SvPVX(sv) : NULL; |
79072805 LW |
6568 | } |
6569 | ||
954c1994 GS |
6570 | /* |
6571 | =for apidoc sv_inc | |
6572 | ||
645c22ef DM |
6573 | Auto-increment of the value in the SV, doing string to numeric conversion |
6574 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6575 | |
6576 | =cut | |
6577 | */ | |
6578 | ||
79072805 | 6579 | void |
864dbfa3 | 6580 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 | 6581 | { |
97aff369 | 6582 | dVAR; |
79072805 | 6583 | register char *d; |
463ee0b2 | 6584 | int flags; |
79072805 LW |
6585 | |
6586 | if (!sv) | |
6587 | return; | |
5b295bef | 6588 | SvGETMAGIC(sv); |
ed6116ce | 6589 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6590 | if (SvIsCOW(sv)) |
6591 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6592 | if (SvREADONLY(sv)) { |
923e4eb5 | 6593 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 6594 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6595 | } |
a0d0e21e | 6596 | if (SvROK(sv)) { |
b5be31e9 | 6597 | IV i; |
9e7bc3e8 JD |
6598 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
6599 | return; | |
56431972 | 6600 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6601 | sv_unref(sv); |
6602 | sv_setiv(sv, i); | |
a0d0e21e | 6603 | } |
ed6116ce | 6604 | } |
8990e307 | 6605 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6606 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
6607 | /* It's (privately or publicly) a float, but not tested as an | |
6608 | integer, so test it to see. */ | |
d460ef45 | 6609 | (void) SvIV(sv); |
28e5dec8 JH |
6610 | flags = SvFLAGS(sv); |
6611 | } | |
6612 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
6613 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6614 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6615 | oops_its_int: |
59d8ce62 | 6616 | #endif |
25da4f38 IZ |
6617 | if (SvIsUV(sv)) { |
6618 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 6619 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
6620 | else |
6621 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 6622 | SvUV_set(sv, SvUVX(sv) + 1); |
25da4f38 IZ |
6623 | } else { |
6624 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 6625 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
6626 | else { |
6627 | (void)SvIOK_only(sv); | |
45977657 | 6628 | SvIV_set(sv, SvIVX(sv) + 1); |
1c846c1f | 6629 | } |
55497cff | 6630 | } |
79072805 LW |
6631 | return; |
6632 | } | |
28e5dec8 JH |
6633 | if (flags & SVp_NOK) { |
6634 | (void)SvNOK_only(sv); | |
9d6ce603 | 6635 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6636 | return; |
6637 | } | |
6638 | ||
3f7c398e | 6639 | if (!(flags & SVp_POK) || !*SvPVX_const(sv)) { |
28e5dec8 | 6640 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
f5282e15 | 6641 | sv_upgrade(sv, ((flags & SVTYPEMASK) > SVt_IV ? SVt_PVIV : SVt_IV)); |
28e5dec8 | 6642 | (void)SvIOK_only(sv); |
45977657 | 6643 | SvIV_set(sv, 1); |
79072805 LW |
6644 | return; |
6645 | } | |
463ee0b2 | 6646 | d = SvPVX(sv); |
79072805 LW |
6647 | while (isALPHA(*d)) d++; |
6648 | while (isDIGIT(*d)) d++; | |
6649 | if (*d) { | |
28e5dec8 | 6650 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 6651 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
6652 | warnings. Probably ought to make the sv_iv_please() that does |
6653 | the conversion if possible, and silently. */ | |
504618e9 | 6654 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6655 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6656 | /* Need to try really hard to see if it's an integer. | |
6657 | 9.22337203685478e+18 is an integer. | |
6658 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6659 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
6660 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
6661 | or we go insane. */ | |
d460ef45 | 6662 | |
28e5dec8 JH |
6663 | (void) sv_2iv(sv); |
6664 | if (SvIOK(sv)) | |
6665 | goto oops_its_int; | |
6666 | ||
6667 | /* sv_2iv *should* have made this an NV */ | |
6668 | if (flags & SVp_NOK) { | |
6669 | (void)SvNOK_only(sv); | |
9d6ce603 | 6670 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6671 | return; |
6672 | } | |
6673 | /* I don't think we can get here. Maybe I should assert this | |
6674 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6675 | Fall through. */ | |
6676 | #if defined(USE_LONG_DOUBLE) | |
6677 | 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 | 6678 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 6679 | #else |
1779d84d | 6680 | 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 | 6681 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
6682 | #endif |
6683 | } | |
6684 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 6685 | sv_setnv(sv,Atof(SvPVX_const(sv)) + 1.0); |
79072805 LW |
6686 | return; |
6687 | } | |
6688 | d--; | |
3f7c398e | 6689 | while (d >= SvPVX_const(sv)) { |
79072805 LW |
6690 | if (isDIGIT(*d)) { |
6691 | if (++*d <= '9') | |
6692 | return; | |
6693 | *(d--) = '0'; | |
6694 | } | |
6695 | else { | |
9d116dd7 JH |
6696 | #ifdef EBCDIC |
6697 | /* MKS: The original code here died if letters weren't consecutive. | |
6698 | * at least it didn't have to worry about non-C locales. The | |
6699 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 6700 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
6701 | * [A-Za-z] are accepted by isALPHA in the C locale. |
6702 | */ | |
6703 | if (*d != 'z' && *d != 'Z') { | |
6704 | do { ++*d; } while (!isALPHA(*d)); | |
6705 | return; | |
6706 | } | |
6707 | *(d--) -= 'z' - 'a'; | |
6708 | #else | |
79072805 LW |
6709 | ++*d; |
6710 | if (isALPHA(*d)) | |
6711 | return; | |
6712 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 6713 | #endif |
79072805 LW |
6714 | } |
6715 | } | |
6716 | /* oh,oh, the number grew */ | |
6717 | SvGROW(sv, SvCUR(sv) + 2); | |
b162af07 | 6718 | SvCUR_set(sv, SvCUR(sv) + 1); |
3f7c398e | 6719 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX_const(sv); d--) |
79072805 LW |
6720 | *d = d[-1]; |
6721 | if (isDIGIT(d[1])) | |
6722 | *d = '1'; | |
6723 | else | |
6724 | *d = d[1]; | |
6725 | } | |
6726 | ||
954c1994 GS |
6727 | /* |
6728 | =for apidoc sv_dec | |
6729 | ||
645c22ef DM |
6730 | Auto-decrement of the value in the SV, doing string to numeric conversion |
6731 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6732 | |
6733 | =cut | |
6734 | */ | |
6735 | ||
79072805 | 6736 | void |
864dbfa3 | 6737 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 6738 | { |
97aff369 | 6739 | dVAR; |
463ee0b2 LW |
6740 | int flags; |
6741 | ||
79072805 LW |
6742 | if (!sv) |
6743 | return; | |
5b295bef | 6744 | SvGETMAGIC(sv); |
ed6116ce | 6745 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6746 | if (SvIsCOW(sv)) |
6747 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6748 | if (SvREADONLY(sv)) { |
923e4eb5 | 6749 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 6750 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6751 | } |
a0d0e21e | 6752 | if (SvROK(sv)) { |
b5be31e9 | 6753 | IV i; |
9e7bc3e8 JD |
6754 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
6755 | return; | |
56431972 | 6756 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6757 | sv_unref(sv); |
6758 | sv_setiv(sv, i); | |
a0d0e21e | 6759 | } |
ed6116ce | 6760 | } |
28e5dec8 JH |
6761 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
6762 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 6763 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6764 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
6765 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6766 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6767 | oops_its_int: |
59d8ce62 | 6768 | #endif |
25da4f38 IZ |
6769 | if (SvIsUV(sv)) { |
6770 | if (SvUVX(sv) == 0) { | |
6771 | (void)SvIOK_only(sv); | |
45977657 | 6772 | SvIV_set(sv, -1); |
25da4f38 IZ |
6773 | } |
6774 | else { | |
6775 | (void)SvIOK_only_UV(sv); | |
f4eee32f | 6776 | SvUV_set(sv, SvUVX(sv) - 1); |
1c846c1f | 6777 | } |
25da4f38 IZ |
6778 | } else { |
6779 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 6780 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
6781 | else { |
6782 | (void)SvIOK_only(sv); | |
45977657 | 6783 | SvIV_set(sv, SvIVX(sv) - 1); |
1c846c1f | 6784 | } |
55497cff | 6785 | } |
6786 | return; | |
6787 | } | |
28e5dec8 | 6788 | if (flags & SVp_NOK) { |
9d6ce603 | 6789 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
6790 | (void)SvNOK_only(sv); |
6791 | return; | |
6792 | } | |
8990e307 | 6793 | if (!(flags & SVp_POK)) { |
ef088171 NC |
6794 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
6795 | sv_upgrade(sv, ((flags & SVTYPEMASK) > SVt_IV) ? SVt_PVIV : SVt_IV); | |
6796 | SvIV_set(sv, -1); | |
6797 | (void)SvIOK_only(sv); | |
79072805 LW |
6798 | return; |
6799 | } | |
28e5dec8 JH |
6800 | #ifdef PERL_PRESERVE_IVUV |
6801 | { | |
504618e9 | 6802 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6803 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6804 | /* Need to try really hard to see if it's an integer. | |
6805 | 9.22337203685478e+18 is an integer. | |
6806 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6807 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
6808 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
6809 | or we go insane. */ | |
d460ef45 | 6810 | |
28e5dec8 JH |
6811 | (void) sv_2iv(sv); |
6812 | if (SvIOK(sv)) | |
6813 | goto oops_its_int; | |
6814 | ||
6815 | /* sv_2iv *should* have made this an NV */ | |
6816 | if (flags & SVp_NOK) { | |
6817 | (void)SvNOK_only(sv); | |
9d6ce603 | 6818 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
6819 | return; |
6820 | } | |
6821 | /* I don't think we can get here. Maybe I should assert this | |
6822 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6823 | Fall through. */ | |
6824 | #if defined(USE_LONG_DOUBLE) | |
6825 | 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 | 6826 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 6827 | #else |
1779d84d | 6828 | 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 | 6829 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
6830 | #endif |
6831 | } | |
6832 | } | |
6833 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 6834 | sv_setnv(sv,Atof(SvPVX_const(sv)) - 1.0); /* punt */ |
79072805 LW |
6835 | } |
6836 | ||
954c1994 GS |
6837 | /* |
6838 | =for apidoc sv_mortalcopy | |
6839 | ||
645c22ef | 6840 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
6841 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
6842 | explicit call to FREETMPS, or by an implicit call at places such as | |
6843 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
6844 | |
6845 | =cut | |
6846 | */ | |
6847 | ||
79072805 LW |
6848 | /* Make a string that will exist for the duration of the expression |
6849 | * evaluation. Actually, it may have to last longer than that, but | |
6850 | * hopefully we won't free it until it has been assigned to a | |
6851 | * permanent location. */ | |
6852 | ||
6853 | SV * | |
864dbfa3 | 6854 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 6855 | { |
97aff369 | 6856 | dVAR; |
463ee0b2 | 6857 | register SV *sv; |
b881518d | 6858 | |
4561caa4 | 6859 | new_SV(sv); |
79072805 | 6860 | sv_setsv(sv,oldstr); |
677b06e3 GS |
6861 | EXTEND_MORTAL(1); |
6862 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
6863 | SvTEMP_on(sv); |
6864 | return sv; | |
6865 | } | |
6866 | ||
954c1994 GS |
6867 | /* |
6868 | =for apidoc sv_newmortal | |
6869 | ||
645c22ef | 6870 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
6871 | set to 1. It will be destroyed "soon", either by an explicit call to |
6872 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
6873 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
6874 | |
6875 | =cut | |
6876 | */ | |
6877 | ||
8990e307 | 6878 | SV * |
864dbfa3 | 6879 | Perl_sv_newmortal(pTHX) |
8990e307 | 6880 | { |
97aff369 | 6881 | dVAR; |
8990e307 LW |
6882 | register SV *sv; |
6883 | ||
4561caa4 | 6884 | new_SV(sv); |
8990e307 | 6885 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
6886 | EXTEND_MORTAL(1); |
6887 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
6888 | return sv; |
6889 | } | |
6890 | ||
954c1994 GS |
6891 | /* |
6892 | =for apidoc sv_2mortal | |
6893 | ||
d4236ebc DM |
6894 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
6895 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
6896 | statement boundaries. SvTEMP() is turned on which means that the SV's |
6897 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
6898 | and C<sv_mortalcopy>. | |
954c1994 GS |
6899 | |
6900 | =cut | |
6901 | */ | |
6902 | ||
79072805 | 6903 | SV * |
864dbfa3 | 6904 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 | 6905 | { |
27da23d5 | 6906 | dVAR; |
79072805 | 6907 | if (!sv) |
7a5b473e | 6908 | return NULL; |
d689ffdd | 6909 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 6910 | return sv; |
677b06e3 GS |
6911 | EXTEND_MORTAL(1); |
6912 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 6913 | SvTEMP_on(sv); |
79072805 LW |
6914 | return sv; |
6915 | } | |
6916 | ||
954c1994 GS |
6917 | /* |
6918 | =for apidoc newSVpv | |
6919 | ||
6920 | Creates a new SV and copies a string into it. The reference count for the | |
6921 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
6922 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
6923 | ||
6924 | =cut | |
6925 | */ | |
6926 | ||
79072805 | 6927 | SV * |
864dbfa3 | 6928 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 6929 | { |
97aff369 | 6930 | dVAR; |
463ee0b2 | 6931 | register SV *sv; |
79072805 | 6932 | |
4561caa4 | 6933 | new_SV(sv); |
ddfa59c7 | 6934 | sv_setpvn(sv, s, len || s == NULL ? len : strlen(s)); |
79072805 LW |
6935 | return sv; |
6936 | } | |
6937 | ||
954c1994 GS |
6938 | /* |
6939 | =for apidoc newSVpvn | |
6940 | ||
6941 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 6942 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 6943 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 6944 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
6945 | |
6946 | =cut | |
6947 | */ | |
6948 | ||
9da1e3b5 | 6949 | SV * |
864dbfa3 | 6950 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 | 6951 | { |
97aff369 | 6952 | dVAR; |
9da1e3b5 MUN |
6953 | register SV *sv; |
6954 | ||
6955 | new_SV(sv); | |
9da1e3b5 MUN |
6956 | sv_setpvn(sv,s,len); |
6957 | return sv; | |
6958 | } | |
6959 | ||
bd08039b NC |
6960 | |
6961 | /* | |
926f8064 | 6962 | =for apidoc newSVhek |
bd08039b NC |
6963 | |
6964 | Creates a new SV from the hash key structure. It will generate scalars that | |
5aaec2b4 NC |
6965 | point to the shared string table where possible. Returns a new (undefined) |
6966 | SV if the hek is NULL. | |
bd08039b NC |
6967 | |
6968 | =cut | |
6969 | */ | |
6970 | ||
6971 | SV * | |
c1b02ed8 | 6972 | Perl_newSVhek(pTHX_ const HEK *hek) |
bd08039b | 6973 | { |
97aff369 | 6974 | dVAR; |
5aaec2b4 NC |
6975 | if (!hek) { |
6976 | SV *sv; | |
6977 | ||
6978 | new_SV(sv); | |
6979 | return sv; | |
6980 | } | |
6981 | ||
bd08039b NC |
6982 | if (HEK_LEN(hek) == HEf_SVKEY) { |
6983 | return newSVsv(*(SV**)HEK_KEY(hek)); | |
6984 | } else { | |
6985 | const int flags = HEK_FLAGS(hek); | |
6986 | if (flags & HVhek_WASUTF8) { | |
6987 | /* Trouble :-) | |
6988 | Andreas would like keys he put in as utf8 to come back as utf8 | |
6989 | */ | |
6990 | STRLEN utf8_len = HEK_LEN(hek); | |
b64e5050 AL |
6991 | const U8 *as_utf8 = bytes_to_utf8 ((U8*)HEK_KEY(hek), &utf8_len); |
6992 | SV * const sv = newSVpvn ((const char*)as_utf8, utf8_len); | |
bd08039b NC |
6993 | |
6994 | SvUTF8_on (sv); | |
6995 | Safefree (as_utf8); /* bytes_to_utf8() allocates a new string */ | |
6996 | return sv; | |
45e34800 | 6997 | } else if (flags & (HVhek_REHASH|HVhek_UNSHARED)) { |
bd08039b NC |
6998 | /* We don't have a pointer to the hv, so we have to replicate the |
6999 | flag into every HEK. This hv is using custom a hasing | |
7000 | algorithm. Hence we can't return a shared string scalar, as | |
7001 | that would contain the (wrong) hash value, and might get passed | |
45e34800 NC |
7002 | into an hv routine with a regular hash. |
7003 | Similarly, a hash that isn't using shared hash keys has to have | |
7004 | the flag in every key so that we know not to try to call | |
7005 | share_hek_kek on it. */ | |
bd08039b | 7006 | |
b64e5050 | 7007 | SV * const sv = newSVpvn (HEK_KEY(hek), HEK_LEN(hek)); |
bd08039b NC |
7008 | if (HEK_UTF8(hek)) |
7009 | SvUTF8_on (sv); | |
7010 | return sv; | |
7011 | } | |
7012 | /* This will be overwhelminly the most common case. */ | |
409dfe77 NC |
7013 | { |
7014 | /* Inline most of newSVpvn_share(), because share_hek_hek() is far | |
7015 | more efficient than sharepvn(). */ | |
7016 | SV *sv; | |
7017 | ||
7018 | new_SV(sv); | |
7019 | sv_upgrade(sv, SVt_PV); | |
7020 | SvPV_set(sv, (char *)HEK_KEY(share_hek_hek(hek))); | |
7021 | SvCUR_set(sv, HEK_LEN(hek)); | |
7022 | SvLEN_set(sv, 0); | |
7023 | SvREADONLY_on(sv); | |
7024 | SvFAKE_on(sv); | |
7025 | SvPOK_on(sv); | |
7026 | if (HEK_UTF8(hek)) | |
7027 | SvUTF8_on(sv); | |
7028 | return sv; | |
7029 | } | |
bd08039b NC |
7030 | } |
7031 | } | |
7032 | ||
1c846c1f NIS |
7033 | /* |
7034 | =for apidoc newSVpvn_share | |
7035 | ||
3f7c398e | 7036 | Creates a new SV with its SvPVX_const pointing to a shared string in the string |
645c22ef DM |
7037 | table. If the string does not already exist in the table, it is created |
7038 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7039 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7040 | otherwise the hash is computed. The idea here is that as the string table | |
3f7c398e | 7041 | is used for shared hash keys these strings will have SvPVX_const == HeKEY and |
645c22ef | 7042 | hash lookup will avoid string compare. |
1c846c1f NIS |
7043 | |
7044 | =cut | |
7045 | */ | |
7046 | ||
7047 | SV * | |
c3654f1a | 7048 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f | 7049 | { |
97aff369 | 7050 | dVAR; |
1c846c1f | 7051 | register SV *sv; |
c3654f1a | 7052 | bool is_utf8 = FALSE; |
a51caccf NC |
7053 | const char *const orig_src = src; |
7054 | ||
c3654f1a | 7055 | if (len < 0) { |
77caf834 | 7056 | STRLEN tmplen = -len; |
c3654f1a | 7057 | is_utf8 = TRUE; |
75a54232 | 7058 | /* See the note in hv.c:hv_fetch() --jhi */ |
e1ec3a88 | 7059 | src = (char*)bytes_from_utf8((const U8*)src, &tmplen, &is_utf8); |
75a54232 JH |
7060 | len = tmplen; |
7061 | } | |
1c846c1f | 7062 | if (!hash) |
5afd6d42 | 7063 | PERL_HASH(hash, src, len); |
1c846c1f | 7064 | new_SV(sv); |
bdd68bc3 | 7065 | sv_upgrade(sv, SVt_PV); |
f880fe2f | 7066 | SvPV_set(sv, sharepvn(src, is_utf8?-len:len, hash)); |
b162af07 | 7067 | SvCUR_set(sv, len); |
b162af07 | 7068 | SvLEN_set(sv, 0); |
1c846c1f NIS |
7069 | SvREADONLY_on(sv); |
7070 | SvFAKE_on(sv); | |
7071 | SvPOK_on(sv); | |
c3654f1a IH |
7072 | if (is_utf8) |
7073 | SvUTF8_on(sv); | |
a51caccf NC |
7074 | if (src != orig_src) |
7075 | Safefree(src); | |
1c846c1f NIS |
7076 | return sv; |
7077 | } | |
7078 | ||
645c22ef | 7079 | |
cea2e8a9 | 7080 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7081 | |
7082 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7083 | * version of the main function, (which may itself be aliased to us). | |
7084 | * Don't access this version directly. | |
7085 | */ | |
7086 | ||
46fc3d4c | 7087 | SV * |
cea2e8a9 | 7088 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7089 | { |
cea2e8a9 | 7090 | dTHX; |
46fc3d4c | 7091 | register SV *sv; |
7092 | va_list args; | |
46fc3d4c | 7093 | va_start(args, pat); |
c5be433b | 7094 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7095 | va_end(args); |
7096 | return sv; | |
7097 | } | |
cea2e8a9 | 7098 | #endif |
46fc3d4c | 7099 | |
954c1994 GS |
7100 | /* |
7101 | =for apidoc newSVpvf | |
7102 | ||
645c22ef | 7103 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7104 | C<sprintf>. |
7105 | ||
7106 | =cut | |
7107 | */ | |
7108 | ||
cea2e8a9 GS |
7109 | SV * |
7110 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7111 | { | |
7112 | register SV *sv; | |
7113 | va_list args; | |
cea2e8a9 | 7114 | va_start(args, pat); |
c5be433b | 7115 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7116 | va_end(args); |
7117 | return sv; | |
7118 | } | |
46fc3d4c | 7119 | |
645c22ef DM |
7120 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7121 | ||
79072805 | 7122 | SV * |
c5be433b GS |
7123 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7124 | { | |
97aff369 | 7125 | dVAR; |
c5be433b GS |
7126 | register SV *sv; |
7127 | new_SV(sv); | |
4608196e | 7128 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
c5be433b GS |
7129 | return sv; |
7130 | } | |
7131 | ||
954c1994 GS |
7132 | /* |
7133 | =for apidoc newSVnv | |
7134 | ||
7135 | Creates a new SV and copies a floating point value into it. | |
7136 | The reference count for the SV is set to 1. | |
7137 | ||
7138 | =cut | |
7139 | */ | |
7140 | ||
c5be433b | 7141 | SV * |
65202027 | 7142 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7143 | { |
97aff369 | 7144 | dVAR; |
463ee0b2 | 7145 | register SV *sv; |
79072805 | 7146 | |
4561caa4 | 7147 | new_SV(sv); |
79072805 LW |
7148 | sv_setnv(sv,n); |
7149 | return sv; | |
7150 | } | |
7151 | ||
954c1994 GS |
7152 | /* |
7153 | =for apidoc newSViv | |
7154 | ||
7155 | Creates a new SV and copies an integer into it. The reference count for the | |
7156 | SV is set to 1. | |
7157 | ||
7158 | =cut | |
7159 | */ | |
7160 | ||
79072805 | 7161 | SV * |
864dbfa3 | 7162 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7163 | { |
97aff369 | 7164 | dVAR; |
463ee0b2 | 7165 | register SV *sv; |
79072805 | 7166 | |
4561caa4 | 7167 | new_SV(sv); |
79072805 LW |
7168 | sv_setiv(sv,i); |
7169 | return sv; | |
7170 | } | |
7171 | ||
954c1994 | 7172 | /* |
1a3327fb JH |
7173 | =for apidoc newSVuv |
7174 | ||
7175 | Creates a new SV and copies an unsigned integer into it. | |
7176 | The reference count for the SV is set to 1. | |
7177 | ||
7178 | =cut | |
7179 | */ | |
7180 | ||
7181 | SV * | |
7182 | Perl_newSVuv(pTHX_ UV u) | |
7183 | { | |
97aff369 | 7184 | dVAR; |
1a3327fb JH |
7185 | register SV *sv; |
7186 | ||
7187 | new_SV(sv); | |
7188 | sv_setuv(sv,u); | |
7189 | return sv; | |
7190 | } | |
7191 | ||
7192 | /* | |
954c1994 GS |
7193 | =for apidoc newRV_noinc |
7194 | ||
7195 | Creates an RV wrapper for an SV. The reference count for the original | |
7196 | SV is B<not> incremented. | |
7197 | ||
7198 | =cut | |
7199 | */ | |
7200 | ||
2304df62 | 7201 | SV * |
864dbfa3 | 7202 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 | 7203 | { |
97aff369 | 7204 | dVAR; |
2304df62 AD |
7205 | register SV *sv; |
7206 | ||
4561caa4 | 7207 | new_SV(sv); |
2304df62 | 7208 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7209 | SvTEMP_off(tmpRef); |
b162af07 | 7210 | SvRV_set(sv, tmpRef); |
2304df62 | 7211 | SvROK_on(sv); |
2304df62 AD |
7212 | return sv; |
7213 | } | |
7214 | ||
ff276b08 | 7215 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7216 | * newRV_inc is in fact #defined to newRV in sv.h |
7217 | */ | |
7218 | ||
5f05dabc | 7219 | SV * |
7f466ec7 | 7220 | Perl_newRV(pTHX_ SV *sv) |
5f05dabc | 7221 | { |
97aff369 | 7222 | dVAR; |
7f466ec7 | 7223 | return newRV_noinc(SvREFCNT_inc_simple_NN(sv)); |
5f05dabc | 7224 | } |
5f05dabc | 7225 | |
954c1994 GS |
7226 | /* |
7227 | =for apidoc newSVsv | |
7228 | ||
7229 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7230 | (Uses C<sv_setsv>). |
954c1994 GS |
7231 | |
7232 | =cut | |
7233 | */ | |
7234 | ||
79072805 | 7235 | SV * |
864dbfa3 | 7236 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7237 | { |
97aff369 | 7238 | dVAR; |
463ee0b2 | 7239 | register SV *sv; |
79072805 LW |
7240 | |
7241 | if (!old) | |
7a5b473e | 7242 | return NULL; |
8990e307 | 7243 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7244 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7245 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
a0714e2c | 7246 | return NULL; |
79072805 | 7247 | } |
4561caa4 | 7248 | new_SV(sv); |
e90aabeb NC |
7249 | /* SV_GMAGIC is the default for sv_setv() |
7250 | SV_NOSTEAL prevents TEMP buffers being, well, stolen, and saves games | |
7251 | with SvTEMP_off and SvTEMP_on round a call to sv_setsv. */ | |
7252 | sv_setsv_flags(sv, old, SV_GMAGIC | SV_NOSTEAL); | |
463ee0b2 | 7253 | return sv; |
79072805 LW |
7254 | } |
7255 | ||
645c22ef DM |
7256 | /* |
7257 | =for apidoc sv_reset | |
7258 | ||
7259 | Underlying implementation for the C<reset> Perl function. | |
7260 | Note that the perl-level function is vaguely deprecated. | |
7261 | ||
7262 | =cut | |
7263 | */ | |
7264 | ||
79072805 | 7265 | void |
e1ec3a88 | 7266 | Perl_sv_reset(pTHX_ register const char *s, HV *stash) |
79072805 | 7267 | { |
27da23d5 | 7268 | dVAR; |
4802d5d7 | 7269 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7270 | |
49d8d3a1 MB |
7271 | if (!stash) |
7272 | return; | |
7273 | ||
79072805 | 7274 | if (!*s) { /* reset ?? searches */ |
aec46f14 | 7275 | MAGIC * const mg = mg_find((SV *)stash, PERL_MAGIC_symtab); |
8d2f4536 NC |
7276 | if (mg) { |
7277 | PMOP *pm = (PMOP *) mg->mg_obj; | |
7278 | while (pm) { | |
7279 | pm->op_pmdynflags &= ~PMdf_USED; | |
7280 | pm = pm->op_pmnext; | |
7281 | } | |
79072805 LW |
7282 | } |
7283 | return; | |
7284 | } | |
7285 | ||
7286 | /* reset variables */ | |
7287 | ||
7288 | if (!HvARRAY(stash)) | |
7289 | return; | |
463ee0b2 LW |
7290 | |
7291 | Zero(todo, 256, char); | |
79072805 | 7292 | while (*s) { |
b464bac0 AL |
7293 | I32 max; |
7294 | I32 i = (unsigned char)*s; | |
79072805 LW |
7295 | if (s[1] == '-') { |
7296 | s += 2; | |
7297 | } | |
4802d5d7 | 7298 | max = (unsigned char)*s++; |
79072805 | 7299 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7300 | todo[i] = 1; |
7301 | } | |
a0d0e21e | 7302 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
b464bac0 | 7303 | HE *entry; |
79072805 | 7304 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7305 | entry; |
7306 | entry = HeNEXT(entry)) | |
7307 | { | |
b464bac0 AL |
7308 | register GV *gv; |
7309 | register SV *sv; | |
7310 | ||
1edc1566 | 7311 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7312 | continue; |
1edc1566 | 7313 | gv = (GV*)HeVAL(entry); |
79072805 | 7314 | sv = GvSV(gv); |
e203899d NC |
7315 | if (sv) { |
7316 | if (SvTHINKFIRST(sv)) { | |
7317 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7318 | sv_unref(sv); | |
7319 | /* XXX Is this continue a bug? Why should THINKFIRST | |
7320 | exempt us from resetting arrays and hashes? */ | |
7321 | continue; | |
7322 | } | |
7323 | SvOK_off(sv); | |
7324 | if (SvTYPE(sv) >= SVt_PV) { | |
7325 | SvCUR_set(sv, 0); | |
bd61b366 | 7326 | if (SvPVX_const(sv) != NULL) |
e203899d NC |
7327 | *SvPVX(sv) = '\0'; |
7328 | SvTAINT(sv); | |
7329 | } | |
79072805 LW |
7330 | } |
7331 | if (GvAV(gv)) { | |
7332 | av_clear(GvAV(gv)); | |
7333 | } | |
bfcb3514 | 7334 | if (GvHV(gv) && !HvNAME_get(GvHV(gv))) { |
b0269e46 AB |
7335 | #if defined(VMS) |
7336 | Perl_die(aTHX_ "Can't reset %%ENV on this system"); | |
7337 | #else /* ! VMS */ | |
463ee0b2 | 7338 | hv_clear(GvHV(gv)); |
b0269e46 AB |
7339 | # if defined(USE_ENVIRON_ARRAY) |
7340 | if (gv == PL_envgv) | |
7341 | my_clearenv(); | |
7342 | # endif /* USE_ENVIRON_ARRAY */ | |
7343 | #endif /* VMS */ | |
79072805 LW |
7344 | } |
7345 | } | |
7346 | } | |
7347 | } | |
7348 | } | |
7349 | ||
645c22ef DM |
7350 | /* |
7351 | =for apidoc sv_2io | |
7352 | ||
7353 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7354 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7355 | named after the PV if we're a string. | |
7356 | ||
7357 | =cut | |
7358 | */ | |
7359 | ||
46fc3d4c | 7360 | IO* |
864dbfa3 | 7361 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7362 | { |
7363 | IO* io; | |
7364 | GV* gv; | |
7365 | ||
7366 | switch (SvTYPE(sv)) { | |
7367 | case SVt_PVIO: | |
7368 | io = (IO*)sv; | |
7369 | break; | |
7370 | case SVt_PVGV: | |
7371 | gv = (GV*)sv; | |
7372 | io = GvIO(gv); | |
7373 | if (!io) | |
cea2e8a9 | 7374 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 7375 | break; |
7376 | default: | |
7377 | if (!SvOK(sv)) | |
cea2e8a9 | 7378 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 7379 | if (SvROK(sv)) |
7380 | return sv_2io(SvRV(sv)); | |
f776e3cd | 7381 | gv = gv_fetchsv(sv, 0, SVt_PVIO); |
46fc3d4c | 7382 | if (gv) |
7383 | io = GvIO(gv); | |
7384 | else | |
7385 | io = 0; | |
7386 | if (!io) | |
be2597df | 7387 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, SVfARG(sv)); |
46fc3d4c | 7388 | break; |
7389 | } | |
7390 | return io; | |
7391 | } | |
7392 | ||
645c22ef DM |
7393 | /* |
7394 | =for apidoc sv_2cv | |
7395 | ||
7396 | Using various gambits, try to get a CV from an SV; in addition, try if | |
7397 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
f2c0649b | 7398 | The flags in C<lref> are passed to sv_fetchsv. |
645c22ef DM |
7399 | |
7400 | =cut | |
7401 | */ | |
7402 | ||
79072805 | 7403 | CV * |
864dbfa3 | 7404 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 7405 | { |
27da23d5 | 7406 | dVAR; |
a0714e2c | 7407 | GV *gv = NULL; |
601f1833 | 7408 | CV *cv = NULL; |
79072805 | 7409 | |
85dec29a NC |
7410 | if (!sv) { |
7411 | *st = NULL; | |
7412 | *gvp = NULL; | |
7413 | return NULL; | |
7414 | } | |
79072805 | 7415 | switch (SvTYPE(sv)) { |
79072805 LW |
7416 | case SVt_PVCV: |
7417 | *st = CvSTASH(sv); | |
a0714e2c | 7418 | *gvp = NULL; |
79072805 LW |
7419 | return (CV*)sv; |
7420 | case SVt_PVHV: | |
7421 | case SVt_PVAV: | |
ef58ba18 | 7422 | *st = NULL; |
a0714e2c | 7423 | *gvp = NULL; |
601f1833 | 7424 | return NULL; |
8990e307 LW |
7425 | case SVt_PVGV: |
7426 | gv = (GV*)sv; | |
a0d0e21e | 7427 | *gvp = gv; |
8990e307 LW |
7428 | *st = GvESTASH(gv); |
7429 | goto fix_gv; | |
7430 | ||
79072805 | 7431 | default: |
5b295bef | 7432 | SvGETMAGIC(sv); |
a0d0e21e | 7433 | if (SvROK(sv)) { |
823a54a3 | 7434 | SV * const *sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
f5284f61 IZ |
7435 | tryAMAGICunDEREF(to_cv); |
7436 | ||
62f274bf GS |
7437 | sv = SvRV(sv); |
7438 | if (SvTYPE(sv) == SVt_PVCV) { | |
7439 | cv = (CV*)sv; | |
a0714e2c | 7440 | *gvp = NULL; |
62f274bf GS |
7441 | *st = CvSTASH(cv); |
7442 | return cv; | |
7443 | } | |
7444 | else if(isGV(sv)) | |
7445 | gv = (GV*)sv; | |
7446 | else | |
cea2e8a9 | 7447 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 7448 | } |
62f274bf | 7449 | else if (isGV(sv)) |
79072805 LW |
7450 | gv = (GV*)sv; |
7451 | else | |
7a5fd60d | 7452 | gv = gv_fetchsv(sv, lref, SVt_PVCV); |
79072805 | 7453 | *gvp = gv; |
ef58ba18 NC |
7454 | if (!gv) { |
7455 | *st = NULL; | |
601f1833 | 7456 | return NULL; |
ef58ba18 | 7457 | } |
e26df76a NC |
7458 | /* Some flags to gv_fetchsv mean don't really create the GV */ |
7459 | if (SvTYPE(gv) != SVt_PVGV) { | |
7460 | *st = NULL; | |
7461 | return NULL; | |
7462 | } | |
79072805 | 7463 | *st = GvESTASH(gv); |
8990e307 | 7464 | fix_gv: |
8ebc5c01 | 7465 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 7466 | SV *tmpsv; |
748a9306 | 7467 | ENTER; |
561b68a9 | 7468 | tmpsv = newSV(0); |
bd61b366 | 7469 | gv_efullname3(tmpsv, gv, NULL); |
f6ec51f7 GS |
7470 | /* XXX this is probably not what they think they're getting. |
7471 | * It has the same effect as "sub name;", i.e. just a forward | |
7472 | * declaration! */ | |
774d564b | 7473 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 | 7474 | newSVOP(OP_CONST, 0, tmpsv), |
5f66b61c | 7475 | NULL, NULL); |
748a9306 | 7476 | LEAVE; |
8ebc5c01 | 7477 | if (!GvCVu(gv)) |
35c1215d | 7478 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
be2597df | 7479 | SVfARG(sv)); |
8990e307 | 7480 | } |
8ebc5c01 | 7481 | return GvCVu(gv); |
79072805 LW |
7482 | } |
7483 | } | |
7484 | ||
c461cf8f JH |
7485 | /* |
7486 | =for apidoc sv_true | |
7487 | ||
7488 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
7489 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
7490 | instead use an in-line version. | |
c461cf8f JH |
7491 | |
7492 | =cut | |
7493 | */ | |
7494 | ||
79072805 | 7495 | I32 |
864dbfa3 | 7496 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 7497 | { |
8990e307 LW |
7498 | if (!sv) |
7499 | return 0; | |
79072805 | 7500 | if (SvPOK(sv)) { |
823a54a3 AL |
7501 | register const XPV* const tXpv = (XPV*)SvANY(sv); |
7502 | if (tXpv && | |
c2f1de04 | 7503 | (tXpv->xpv_cur > 1 || |
339049b0 | 7504 | (tXpv->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
79072805 LW |
7505 | return 1; |
7506 | else | |
7507 | return 0; | |
7508 | } | |
7509 | else { | |
7510 | if (SvIOK(sv)) | |
463ee0b2 | 7511 | return SvIVX(sv) != 0; |
79072805 LW |
7512 | else { |
7513 | if (SvNOK(sv)) | |
463ee0b2 | 7514 | return SvNVX(sv) != 0.0; |
79072805 | 7515 | else |
463ee0b2 | 7516 | return sv_2bool(sv); |
79072805 LW |
7517 | } |
7518 | } | |
7519 | } | |
79072805 | 7520 | |
645c22ef | 7521 | /* |
c461cf8f JH |
7522 | =for apidoc sv_pvn_force |
7523 | ||
7524 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
7525 | A private implementation of the C<SvPV_force> macro for compilers which |
7526 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 7527 | |
8d6d96c1 HS |
7528 | =for apidoc sv_pvn_force_flags |
7529 | ||
7530 | Get a sensible string out of the SV somehow. | |
7531 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
7532 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
7533 | implemented in terms of this function. | |
645c22ef DM |
7534 | You normally want to use the various wrapper macros instead: see |
7535 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
7536 | |
7537 | =cut | |
7538 | */ | |
7539 | ||
7540 | char * | |
7541 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
7542 | { | |
97aff369 | 7543 | dVAR; |
6fc92669 | 7544 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 7545 | sv_force_normal_flags(sv, 0); |
1c846c1f | 7546 | |
a0d0e21e | 7547 | if (SvPOK(sv)) { |
13c5b33c NC |
7548 | if (lp) |
7549 | *lp = SvCUR(sv); | |
a0d0e21e LW |
7550 | } |
7551 | else { | |
a3b680e6 | 7552 | char *s; |
13c5b33c NC |
7553 | STRLEN len; |
7554 | ||
4d84ee25 | 7555 | if (SvREADONLY(sv) && !(flags & SV_MUTABLE_RETURN)) { |
b64e5050 | 7556 | const char * const ref = sv_reftype(sv,0); |
4d84ee25 NC |
7557 | if (PL_op) |
7558 | Perl_croak(aTHX_ "Can't coerce readonly %s to string in %s", | |
b64e5050 | 7559 | ref, OP_NAME(PL_op)); |
4d84ee25 | 7560 | else |
b64e5050 | 7561 | Perl_croak(aTHX_ "Can't coerce readonly %s to string", ref); |
4d84ee25 | 7562 | } |
b64e5050 | 7563 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) |
cea2e8a9 | 7564 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 7565 | OP_NAME(PL_op)); |
b64e5050 | 7566 | s = sv_2pv_flags(sv, &len, flags); |
13c5b33c NC |
7567 | if (lp) |
7568 | *lp = len; | |
7569 | ||
3f7c398e | 7570 | if (s != SvPVX_const(sv)) { /* Almost, but not quite, sv_setpvn() */ |
a0d0e21e LW |
7571 | if (SvROK(sv)) |
7572 | sv_unref(sv); | |
862a34c6 | 7573 | SvUPGRADE(sv, SVt_PV); /* Never FALSE */ |
a0d0e21e | 7574 | SvGROW(sv, len + 1); |
706aa1c9 | 7575 | Move(s,SvPVX(sv),len,char); |
a0d0e21e LW |
7576 | SvCUR_set(sv, len); |
7577 | *SvEND(sv) = '\0'; | |
7578 | } | |
7579 | if (!SvPOK(sv)) { | |
7580 | SvPOK_on(sv); /* validate pointer */ | |
7581 | SvTAINT(sv); | |
1d7c1841 | 7582 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 7583 | PTR2UV(sv),SvPVX_const(sv))); |
a0d0e21e LW |
7584 | } |
7585 | } | |
4d84ee25 | 7586 | return SvPVX_mutable(sv); |
a0d0e21e LW |
7587 | } |
7588 | ||
645c22ef | 7589 | /* |
645c22ef DM |
7590 | =for apidoc sv_pvbyten_force |
7591 | ||
0feed65a | 7592 | The backend for the C<SvPVbytex_force> macro. Always use the macro instead. |
645c22ef DM |
7593 | |
7594 | =cut | |
7595 | */ | |
7596 | ||
7340a771 GS |
7597 | char * |
7598 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
7599 | { | |
46ec2f14 | 7600 | sv_pvn_force(sv,lp); |
ffebcc3e | 7601 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
7602 | *lp = SvCUR(sv); |
7603 | return SvPVX(sv); | |
7340a771 GS |
7604 | } |
7605 | ||
645c22ef | 7606 | /* |
c461cf8f JH |
7607 | =for apidoc sv_pvutf8n_force |
7608 | ||
0feed65a | 7609 | The backend for the C<SvPVutf8x_force> macro. Always use the macro instead. |
c461cf8f JH |
7610 | |
7611 | =cut | |
7612 | */ | |
7613 | ||
7340a771 GS |
7614 | char * |
7615 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
7616 | { | |
46ec2f14 | 7617 | sv_pvn_force(sv,lp); |
560a288e | 7618 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
7619 | *lp = SvCUR(sv); |
7620 | return SvPVX(sv); | |
7340a771 GS |
7621 | } |
7622 | ||
c461cf8f JH |
7623 | /* |
7624 | =for apidoc sv_reftype | |
7625 | ||
7626 | Returns a string describing what the SV is a reference to. | |
7627 | ||
7628 | =cut | |
7629 | */ | |
7630 | ||
2b388283 | 7631 | const char * |
bfed75c6 | 7632 | Perl_sv_reftype(pTHX_ const SV *sv, int ob) |
a0d0e21e | 7633 | { |
07409e01 NC |
7634 | /* The fact that I don't need to downcast to char * everywhere, only in ?: |
7635 | inside return suggests a const propagation bug in g++. */ | |
c86bf373 | 7636 | if (ob && SvOBJECT(sv)) { |
1b6737cc | 7637 | char * const name = HvNAME_get(SvSTASH(sv)); |
07409e01 | 7638 | return name ? name : (char *) "__ANON__"; |
c86bf373 | 7639 | } |
a0d0e21e LW |
7640 | else { |
7641 | switch (SvTYPE(sv)) { | |
7642 | case SVt_NULL: | |
7643 | case SVt_IV: | |
7644 | case SVt_NV: | |
7645 | case SVt_RV: | |
7646 | case SVt_PV: | |
7647 | case SVt_PVIV: | |
7648 | case SVt_PVNV: | |
7649 | case SVt_PVMG: | |
1cb0ed9b | 7650 | if (SvVOK(sv)) |
439cb1c4 | 7651 | return "VSTRING"; |
a0d0e21e LW |
7652 | if (SvROK(sv)) |
7653 | return "REF"; | |
7654 | else | |
7655 | return "SCALAR"; | |
1cb0ed9b | 7656 | |
07409e01 | 7657 | case SVt_PVLV: return (char *) (SvROK(sv) ? "REF" |
be65207d DM |
7658 | /* tied lvalues should appear to be |
7659 | * scalars for backwards compatitbility */ | |
7660 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
07409e01 | 7661 | ? "SCALAR" : "LVALUE"); |
a0d0e21e LW |
7662 | case SVt_PVAV: return "ARRAY"; |
7663 | case SVt_PVHV: return "HASH"; | |
7664 | case SVt_PVCV: return "CODE"; | |
7665 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 7666 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 7667 | case SVt_PVIO: return "IO"; |
cecf5685 | 7668 | case SVt_BIND: return "BIND"; |
a0d0e21e LW |
7669 | default: return "UNKNOWN"; |
7670 | } | |
7671 | } | |
7672 | } | |
7673 | ||
954c1994 GS |
7674 | /* |
7675 | =for apidoc sv_isobject | |
7676 | ||
7677 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
7678 | object. If the SV is not an RV, or if the object is not blessed, then this | |
7679 | will return false. | |
7680 | ||
7681 | =cut | |
7682 | */ | |
7683 | ||
463ee0b2 | 7684 | int |
864dbfa3 | 7685 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 7686 | { |
68dc0745 | 7687 | if (!sv) |
7688 | return 0; | |
5b295bef | 7689 | SvGETMAGIC(sv); |
85e6fe83 LW |
7690 | if (!SvROK(sv)) |
7691 | return 0; | |
7692 | sv = (SV*)SvRV(sv); | |
7693 | if (!SvOBJECT(sv)) | |
7694 | return 0; | |
7695 | return 1; | |
7696 | } | |
7697 | ||
954c1994 GS |
7698 | /* |
7699 | =for apidoc sv_isa | |
7700 | ||
7701 | Returns a boolean indicating whether the SV is blessed into the specified | |
7702 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
7703 | an inheritance relationship. | |
7704 | ||
7705 | =cut | |
7706 | */ | |
7707 | ||
85e6fe83 | 7708 | int |
864dbfa3 | 7709 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 7710 | { |
bfcb3514 | 7711 | const char *hvname; |
68dc0745 | 7712 | if (!sv) |
7713 | return 0; | |
5b295bef | 7714 | SvGETMAGIC(sv); |
ed6116ce | 7715 | if (!SvROK(sv)) |
463ee0b2 | 7716 | return 0; |
ed6116ce LW |
7717 | sv = (SV*)SvRV(sv); |
7718 | if (!SvOBJECT(sv)) | |
463ee0b2 | 7719 | return 0; |
bfcb3514 NC |
7720 | hvname = HvNAME_get(SvSTASH(sv)); |
7721 | if (!hvname) | |
e27ad1f2 | 7722 | return 0; |
463ee0b2 | 7723 | |
bfcb3514 | 7724 | return strEQ(hvname, name); |
463ee0b2 LW |
7725 | } |
7726 | ||
954c1994 GS |
7727 | /* |
7728 | =for apidoc newSVrv | |
7729 | ||
7730 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
7731 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
7732 | be blessed in the specified package. The new SV is returned and its | |
7733 | reference count is 1. | |
7734 | ||
7735 | =cut | |
7736 | */ | |
7737 | ||
463ee0b2 | 7738 | SV* |
864dbfa3 | 7739 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 7740 | { |
97aff369 | 7741 | dVAR; |
463ee0b2 LW |
7742 | SV *sv; |
7743 | ||
4561caa4 | 7744 | new_SV(sv); |
51cf62d8 | 7745 | |
765f542d | 7746 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
52944de8 | 7747 | (void)SvAMAGIC_off(rv); |
51cf62d8 | 7748 | |
0199fce9 | 7749 | if (SvTYPE(rv) >= SVt_PVMG) { |
a3b680e6 | 7750 | const U32 refcnt = SvREFCNT(rv); |
0199fce9 JD |
7751 | SvREFCNT(rv) = 0; |
7752 | sv_clear(rv); | |
7753 | SvFLAGS(rv) = 0; | |
7754 | SvREFCNT(rv) = refcnt; | |
0199fce9 | 7755 | |
dc5494d2 NC |
7756 | sv_upgrade(rv, SVt_RV); |
7757 | } else if (SvROK(rv)) { | |
7758 | SvREFCNT_dec(SvRV(rv)); | |
7759 | } else if (SvTYPE(rv) < SVt_RV) | |
0199fce9 JD |
7760 | sv_upgrade(rv, SVt_RV); |
7761 | else if (SvTYPE(rv) > SVt_RV) { | |
8bd4d4c5 | 7762 | SvPV_free(rv); |
0199fce9 JD |
7763 | SvCUR_set(rv, 0); |
7764 | SvLEN_set(rv, 0); | |
7765 | } | |
51cf62d8 | 7766 | |
0c34ef67 | 7767 | SvOK_off(rv); |
b162af07 | 7768 | SvRV_set(rv, sv); |
ed6116ce | 7769 | SvROK_on(rv); |
463ee0b2 | 7770 | |
a0d0e21e | 7771 | if (classname) { |
da51bb9b | 7772 | HV* const stash = gv_stashpv(classname, GV_ADD); |
a0d0e21e LW |
7773 | (void)sv_bless(rv, stash); |
7774 | } | |
7775 | return sv; | |
7776 | } | |
7777 | ||
954c1994 GS |
7778 | /* |
7779 | =for apidoc sv_setref_pv | |
7780 | ||
7781 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
7782 | argument will be upgraded to an RV. That RV will be modified to point to | |
7783 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
7784 | into the SV. The C<classname> argument indicates the package for the | |
bd61b366 | 7785 | blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV |
d34c2299 | 7786 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7787 | |
7788 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
7789 | objects will become corrupted by the pointer copy process. | |
7790 | ||
7791 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
7792 | ||
7793 | =cut | |
7794 | */ | |
7795 | ||
a0d0e21e | 7796 | SV* |
864dbfa3 | 7797 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 7798 | { |
97aff369 | 7799 | dVAR; |
189b2af5 | 7800 | if (!pv) { |
3280af22 | 7801 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
7802 | SvSETMAGIC(rv); |
7803 | } | |
a0d0e21e | 7804 | else |
56431972 | 7805 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
7806 | return rv; |
7807 | } | |
7808 | ||
954c1994 GS |
7809 | /* |
7810 | =for apidoc sv_setref_iv | |
7811 | ||
7812 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
7813 | argument will be upgraded to an RV. That RV will be modified to point to | |
7814 | the new SV. The C<classname> argument indicates the package for the | |
bd61b366 | 7815 | blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV |
d34c2299 | 7816 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7817 | |
7818 | =cut | |
7819 | */ | |
7820 | ||
a0d0e21e | 7821 | SV* |
864dbfa3 | 7822 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
7823 | { |
7824 | sv_setiv(newSVrv(rv,classname), iv); | |
7825 | return rv; | |
7826 | } | |
7827 | ||
954c1994 | 7828 | /* |
e1c57cef JH |
7829 | =for apidoc sv_setref_uv |
7830 | ||
7831 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
7832 | argument will be upgraded to an RV. That RV will be modified to point to | |
7833 | the new SV. The C<classname> argument indicates the package for the | |
bd61b366 | 7834 | blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV |
d34c2299 | 7835 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
7836 | |
7837 | =cut | |
7838 | */ | |
7839 | ||
7840 | SV* | |
7841 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
7842 | { | |
7843 | sv_setuv(newSVrv(rv,classname), uv); | |
7844 | return rv; | |
7845 | } | |
7846 | ||
7847 | /* | |
954c1994 GS |
7848 | =for apidoc sv_setref_nv |
7849 | ||
7850 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
7851 | argument will be upgraded to an RV. That RV will be modified to point to | |
7852 | the new SV. The C<classname> argument indicates the package for the | |
bd61b366 | 7853 | blessing. Set C<classname> to C<NULL> to avoid the blessing. The new SV |
d34c2299 | 7854 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
7855 | |
7856 | =cut | |
7857 | */ | |
7858 | ||
a0d0e21e | 7859 | SV* |
65202027 | 7860 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
7861 | { |
7862 | sv_setnv(newSVrv(rv,classname), nv); | |
7863 | return rv; | |
7864 | } | |
463ee0b2 | 7865 | |
954c1994 GS |
7866 | /* |
7867 | =for apidoc sv_setref_pvn | |
7868 | ||
7869 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
7870 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
7871 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
7872 | argument indicates the package for the blessing. Set C<classname> to | |
bd61b366 | 7873 | C<NULL> to avoid the blessing. The new SV will have a reference count |
d34c2299 | 7874 | of 1, and the RV will be returned. |
954c1994 GS |
7875 | |
7876 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
7877 | ||
7878 | =cut | |
7879 | */ | |
7880 | ||
a0d0e21e | 7881 | SV* |
1b6737cc | 7882 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, const char *pv, STRLEN n) |
a0d0e21e LW |
7883 | { |
7884 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
7885 | return rv; |
7886 | } | |
7887 | ||
954c1994 GS |
7888 | /* |
7889 | =for apidoc sv_bless | |
7890 | ||
7891 | Blesses an SV into a specified package. The SV must be an RV. The package | |
7892 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
7893 | of the SV is unaffected. | |
7894 | ||
7895 | =cut | |
7896 | */ | |
7897 | ||
a0d0e21e | 7898 | SV* |
864dbfa3 | 7899 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 7900 | { |
97aff369 | 7901 | dVAR; |
76e3520e | 7902 | SV *tmpRef; |
a0d0e21e | 7903 | if (!SvROK(sv)) |
cea2e8a9 | 7904 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
7905 | tmpRef = SvRV(sv); |
7906 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
7907 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 7908 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
7909 | if (SvOBJECT(tmpRef)) { |
7910 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 7911 | --PL_sv_objcount; |
76e3520e | 7912 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 7913 | } |
a0d0e21e | 7914 | } |
76e3520e GS |
7915 | SvOBJECT_on(tmpRef); |
7916 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 7917 | ++PL_sv_objcount; |
862a34c6 | 7918 | SvUPGRADE(tmpRef, SVt_PVMG); |
b37c2d43 | 7919 | SvSTASH_set(tmpRef, (HV*)SvREFCNT_inc_simple(stash)); |
a0d0e21e | 7920 | |
2e3febc6 CS |
7921 | if (Gv_AMG(stash)) |
7922 | SvAMAGIC_on(sv); | |
7923 | else | |
52944de8 | 7924 | (void)SvAMAGIC_off(sv); |
a0d0e21e | 7925 | |
1edbfb88 AB |
7926 | if(SvSMAGICAL(tmpRef)) |
7927 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
7928 | mg_set(tmpRef); | |
7929 | ||
7930 | ||
ecdeb87c | 7931 | |
a0d0e21e LW |
7932 | return sv; |
7933 | } | |
7934 | ||
645c22ef | 7935 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
7936 | */ |
7937 | ||
76e3520e | 7938 | STATIC void |
cea2e8a9 | 7939 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 7940 | { |
97aff369 | 7941 | dVAR; |
850fabdf | 7942 | void *xpvmg; |
b37c2d43 | 7943 | SV * const temp = sv_newmortal(); |
850fabdf | 7944 | |
a0d0e21e LW |
7945 | assert(SvTYPE(sv) == SVt_PVGV); |
7946 | SvFAKE_off(sv); | |
180488f8 NC |
7947 | gv_efullname3(temp, (GV *) sv, "*"); |
7948 | ||
f7877b28 | 7949 | if (GvGP(sv)) { |
1edc1566 | 7950 | gp_free((GV*)sv); |
f7877b28 | 7951 | } |
e826b3c7 | 7952 | if (GvSTASH(sv)) { |
e15faf7d | 7953 | sv_del_backref((SV*)GvSTASH(sv), sv); |
5c284bb0 | 7954 | GvSTASH(sv) = NULL; |
e826b3c7 | 7955 | } |
a5f75d66 | 7956 | GvMULTI_off(sv); |
acda4c6a NC |
7957 | if (GvNAME_HEK(sv)) { |
7958 | unshare_hek(GvNAME_HEK(sv)); | |
7959 | } | |
2e5b91de | 7960 | isGV_with_GP_off(sv); |
850fabdf GS |
7961 | |
7962 | /* need to keep SvANY(sv) in the right arena */ | |
7963 | xpvmg = new_XPVMG(); | |
7964 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
7965 | del_XPVGV(SvANY(sv)); | |
7966 | SvANY(sv) = xpvmg; | |
7967 | ||
a0d0e21e LW |
7968 | SvFLAGS(sv) &= ~SVTYPEMASK; |
7969 | SvFLAGS(sv) |= SVt_PVMG; | |
180488f8 NC |
7970 | |
7971 | /* Intentionally not calling any local SET magic, as this isn't so much a | |
7972 | set operation as merely an internal storage change. */ | |
7973 | sv_setsv_flags(sv, temp, 0); | |
a0d0e21e LW |
7974 | } |
7975 | ||
954c1994 | 7976 | /* |
840a7b70 | 7977 | =for apidoc sv_unref_flags |
954c1994 GS |
7978 | |
7979 | Unsets the RV status of the SV, and decrements the reference count of | |
7980 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
7981 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
7982 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
7983 | (otherwise the decrementing is conditional on the reference count being | |
7984 | different from one or the reference being a readonly SV). | |
7889fe52 | 7985 | See C<SvROK_off>. |
954c1994 GS |
7986 | |
7987 | =cut | |
7988 | */ | |
7989 | ||
ed6116ce | 7990 | void |
e15faf7d | 7991 | Perl_sv_unref_flags(pTHX_ SV *ref, U32 flags) |
ed6116ce | 7992 | { |
b64e5050 | 7993 | SV* const target = SvRV(ref); |
810b8aa5 | 7994 | |
e15faf7d NC |
7995 | if (SvWEAKREF(ref)) { |
7996 | sv_del_backref(target, ref); | |
7997 | SvWEAKREF_off(ref); | |
7998 | SvRV_set(ref, NULL); | |
810b8aa5 GS |
7999 | return; |
8000 | } | |
e15faf7d NC |
8001 | SvRV_set(ref, NULL); |
8002 | SvROK_off(ref); | |
8003 | /* You can't have a || SvREADONLY(target) here, as $a = $$a, where $a was | |
04ca4930 | 8004 | assigned to as BEGIN {$a = \"Foo"} will fail. */ |
e15faf7d NC |
8005 | if (SvREFCNT(target) != 1 || (flags & SV_IMMEDIATE_UNREF)) |
8006 | SvREFCNT_dec(target); | |
840a7b70 | 8007 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
e15faf7d | 8008 | sv_2mortal(target); /* Schedule for freeing later */ |
ed6116ce | 8009 | } |
8990e307 | 8010 | |
840a7b70 | 8011 | /* |
645c22ef DM |
8012 | =for apidoc sv_untaint |
8013 | ||
8014 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8015 | =cut | |
8016 | */ | |
8017 | ||
bbce6d69 | 8018 | void |
864dbfa3 | 8019 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8020 | { |
13f57bf8 | 8021 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
b64e5050 | 8022 | MAGIC * const mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8023 | if (mg) |
565764a8 | 8024 | mg->mg_len &= ~1; |
36477c24 | 8025 | } |
bbce6d69 | 8026 | } |
8027 | ||
645c22ef DM |
8028 | /* |
8029 | =for apidoc sv_tainted | |
8030 | ||
8031 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8032 | =cut | |
8033 | */ | |
8034 | ||
bbce6d69 | 8035 | bool |
864dbfa3 | 8036 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8037 | { |
13f57bf8 | 8038 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
823a54a3 | 8039 | const MAGIC * const mg = mg_find(sv, PERL_MAGIC_taint); |
2ddb8a4f | 8040 | if (mg && (mg->mg_len & 1) ) |
36477c24 | 8041 | return TRUE; |
8042 | } | |
8043 | return FALSE; | |
bbce6d69 | 8044 | } |
8045 | ||
09540bc3 JH |
8046 | /* |
8047 | =for apidoc sv_setpviv | |
8048 | ||
8049 | Copies an integer into the given SV, also updating its string value. | |
8050 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8051 | ||
8052 | =cut | |
8053 | */ | |
8054 | ||
8055 | void | |
8056 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8057 | { | |
8058 | char buf[TYPE_CHARS(UV)]; | |
8059 | char *ebuf; | |
b64e5050 | 8060 | char * const ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); |
09540bc3 JH |
8061 | |
8062 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8063 | } | |
8064 | ||
8065 | /* | |
8066 | =for apidoc sv_setpviv_mg | |
8067 | ||
8068 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8069 | ||
8070 | =cut | |
8071 | */ | |
8072 | ||
8073 | void | |
8074 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8075 | { | |
df7eb254 | 8076 | sv_setpviv(sv, iv); |
09540bc3 JH |
8077 | SvSETMAGIC(sv); |
8078 | } | |
8079 | ||
cea2e8a9 | 8080 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8081 | |
8082 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8083 | * version of the main function, (which may itself be aliased to us). | |
8084 | * Don't access this version directly. | |
8085 | */ | |
8086 | ||
cea2e8a9 GS |
8087 | void |
8088 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8089 | { | |
8090 | dTHX; | |
8091 | va_list args; | |
8092 | va_start(args, pat); | |
c5be433b | 8093 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8094 | va_end(args); |
8095 | } | |
8096 | ||
645c22ef DM |
8097 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8098 | * version of the main function, (which may itself be aliased to us). | |
8099 | * Don't access this version directly. | |
8100 | */ | |
cea2e8a9 GS |
8101 | |
8102 | void | |
8103 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8104 | { | |
8105 | dTHX; | |
8106 | va_list args; | |
8107 | va_start(args, pat); | |
c5be433b | 8108 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8109 | va_end(args); |
cea2e8a9 GS |
8110 | } |
8111 | #endif | |
8112 | ||
954c1994 GS |
8113 | /* |
8114 | =for apidoc sv_setpvf | |
8115 | ||
bffc3d17 SH |
8116 | Works like C<sv_catpvf> but copies the text into the SV instead of |
8117 | appending it. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
954c1994 GS |
8118 | |
8119 | =cut | |
8120 | */ | |
8121 | ||
46fc3d4c | 8122 | void |
864dbfa3 | 8123 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8124 | { |
8125 | va_list args; | |
46fc3d4c | 8126 | va_start(args, pat); |
c5be433b | 8127 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8128 | va_end(args); |
8129 | } | |
8130 | ||
bffc3d17 SH |
8131 | /* |
8132 | =for apidoc sv_vsetpvf | |
8133 | ||
8134 | Works like C<sv_vcatpvf> but copies the text into the SV instead of | |
8135 | appending it. Does not handle 'set' magic. See C<sv_vsetpvf_mg>. | |
8136 | ||
8137 | Usually used via its frontend C<sv_setpvf>. | |
8138 | ||
8139 | =cut | |
8140 | */ | |
645c22ef | 8141 | |
c5be433b GS |
8142 | void |
8143 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8144 | { | |
4608196e | 8145 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
c5be433b | 8146 | } |
ef50df4b | 8147 | |
954c1994 GS |
8148 | /* |
8149 | =for apidoc sv_setpvf_mg | |
8150 | ||
8151 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8152 | ||
8153 | =cut | |
8154 | */ | |
8155 | ||
ef50df4b | 8156 | void |
864dbfa3 | 8157 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8158 | { |
8159 | va_list args; | |
ef50df4b | 8160 | va_start(args, pat); |
c5be433b | 8161 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8162 | va_end(args); |
c5be433b GS |
8163 | } |
8164 | ||
bffc3d17 SH |
8165 | /* |
8166 | =for apidoc sv_vsetpvf_mg | |
8167 | ||
8168 | Like C<sv_vsetpvf>, but also handles 'set' magic. | |
8169 | ||
8170 | Usually used via its frontend C<sv_setpvf_mg>. | |
8171 | ||
8172 | =cut | |
8173 | */ | |
645c22ef | 8174 | |
c5be433b GS |
8175 | void |
8176 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8177 | { | |
4608196e | 8178 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
ef50df4b GS |
8179 | SvSETMAGIC(sv); |
8180 | } | |
8181 | ||
cea2e8a9 | 8182 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8183 | |
8184 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8185 | * version of the main function, (which may itself be aliased to us). | |
8186 | * Don't access this version directly. | |
8187 | */ | |
8188 | ||
cea2e8a9 GS |
8189 | void |
8190 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
8191 | { | |
8192 | dTHX; | |
8193 | va_list args; | |
8194 | va_start(args, pat); | |
c5be433b | 8195 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
8196 | va_end(args); |
8197 | } | |
8198 | ||
645c22ef DM |
8199 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8200 | * version of the main function, (which may itself be aliased to us). | |
8201 | * Don't access this version directly. | |
8202 | */ | |
8203 | ||
cea2e8a9 GS |
8204 | void |
8205 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8206 | { | |
8207 | dTHX; | |
8208 | va_list args; | |
8209 | va_start(args, pat); | |
c5be433b | 8210 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 8211 | va_end(args); |
cea2e8a9 GS |
8212 | } |
8213 | #endif | |
8214 | ||
954c1994 GS |
8215 | /* |
8216 | =for apidoc sv_catpvf | |
8217 | ||
d5ce4a7c GA |
8218 | Processes its arguments like C<sprintf> and appends the formatted |
8219 | output to an SV. If the appended data contains "wide" characters | |
8220 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
8221 | and characters >255 formatted with %c), the original SV might get | |
bffc3d17 | 8222 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. See |
cdd94ca7 NC |
8223 | C<sv_catpvf_mg>. If the original SV was UTF-8, the pattern should be |
8224 | valid UTF-8; if the original SV was bytes, the pattern should be too. | |
954c1994 | 8225 | |
d5ce4a7c | 8226 | =cut */ |
954c1994 | 8227 | |
46fc3d4c | 8228 | void |
864dbfa3 | 8229 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8230 | { |
8231 | va_list args; | |
46fc3d4c | 8232 | va_start(args, pat); |
c5be433b | 8233 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 8234 | va_end(args); |
8235 | } | |
8236 | ||
bffc3d17 SH |
8237 | /* |
8238 | =for apidoc sv_vcatpvf | |
8239 | ||
8240 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8241 | to an SV. Does not handle 'set' magic. See C<sv_vcatpvf_mg>. | |
8242 | ||
8243 | Usually used via its frontend C<sv_catpvf>. | |
8244 | ||
8245 | =cut | |
8246 | */ | |
645c22ef | 8247 | |
ef50df4b | 8248 | void |
c5be433b GS |
8249 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
8250 | { | |
4608196e | 8251 | sv_vcatpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
c5be433b GS |
8252 | } |
8253 | ||
954c1994 GS |
8254 | /* |
8255 | =for apidoc sv_catpvf_mg | |
8256 | ||
8257 | Like C<sv_catpvf>, but also handles 'set' magic. | |
8258 | ||
8259 | =cut | |
8260 | */ | |
8261 | ||
c5be433b | 8262 | void |
864dbfa3 | 8263 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8264 | { |
8265 | va_list args; | |
ef50df4b | 8266 | va_start(args, pat); |
c5be433b | 8267 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 8268 | va_end(args); |
c5be433b GS |
8269 | } |
8270 | ||
bffc3d17 SH |
8271 | /* |
8272 | =for apidoc sv_vcatpvf_mg | |
8273 | ||
8274 | Like C<sv_vcatpvf>, but also handles 'set' magic. | |
8275 | ||
8276 | Usually used via its frontend C<sv_catpvf_mg>. | |
8277 | ||
8278 | =cut | |
8279 | */ | |
645c22ef | 8280 | |
c5be433b GS |
8281 | void |
8282 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8283 | { | |
4608196e | 8284 | sv_vcatpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
ef50df4b GS |
8285 | SvSETMAGIC(sv); |
8286 | } | |
8287 | ||
954c1994 GS |
8288 | /* |
8289 | =for apidoc sv_vsetpvfn | |
8290 | ||
bffc3d17 | 8291 | Works like C<sv_vcatpvfn> but copies the text into the SV instead of |
954c1994 GS |
8292 | appending it. |
8293 | ||
bffc3d17 | 8294 | Usually used via one of its frontends C<sv_vsetpvf> and C<sv_vsetpvf_mg>. |
645c22ef | 8295 | |
954c1994 GS |
8296 | =cut |
8297 | */ | |
8298 | ||
46fc3d4c | 8299 | void |
7d5ea4e7 | 8300 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8301 | { |
8302 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 8303 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 8304 | } |
8305 | ||
2d00ba3b | 8306 | STATIC I32 |
9dd79c3f | 8307 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 | 8308 | { |
97aff369 | 8309 | dVAR; |
211dfcf1 HS |
8310 | I32 var = 0; |
8311 | switch (**pattern) { | |
8312 | case '1': case '2': case '3': | |
8313 | case '4': case '5': case '6': | |
8314 | case '7': case '8': case '9': | |
2fba7546 GA |
8315 | var = *(*pattern)++ - '0'; |
8316 | while (isDIGIT(**pattern)) { | |
5f66b61c | 8317 | const I32 tmp = var * 10 + (*(*pattern)++ - '0'); |
2fba7546 GA |
8318 | if (tmp < var) |
8319 | Perl_croak(aTHX_ "Integer overflow in format string for %s", (PL_op ? OP_NAME(PL_op) : "sv_vcatpvfn")); | |
8320 | var = tmp; | |
8321 | } | |
211dfcf1 HS |
8322 | } |
8323 | return var; | |
8324 | } | |
211dfcf1 | 8325 | |
c445ea15 AL |
8326 | STATIC char * |
8327 | S_F0convert(NV nv, char *endbuf, STRLEN *len) | |
4151a5fe | 8328 | { |
a3b680e6 | 8329 | const int neg = nv < 0; |
4151a5fe | 8330 | UV uv; |
4151a5fe IZ |
8331 | |
8332 | if (neg) | |
8333 | nv = -nv; | |
8334 | if (nv < UV_MAX) { | |
b464bac0 | 8335 | char *p = endbuf; |
4151a5fe | 8336 | nv += 0.5; |
028f8eaa | 8337 | uv = (UV)nv; |
4151a5fe IZ |
8338 | if (uv & 1 && uv == nv) |
8339 | uv--; /* Round to even */ | |
8340 | do { | |
a3b680e6 | 8341 | const unsigned dig = uv % 10; |
4151a5fe IZ |
8342 | *--p = '0' + dig; |
8343 | } while (uv /= 10); | |
8344 | if (neg) | |
8345 | *--p = '-'; | |
8346 | *len = endbuf - p; | |
8347 | return p; | |
8348 | } | |
bd61b366 | 8349 | return NULL; |
4151a5fe IZ |
8350 | } |
8351 | ||
8352 | ||
954c1994 GS |
8353 | /* |
8354 | =for apidoc sv_vcatpvfn | |
8355 | ||
8356 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8357 | to an SV. Uses an array of SVs if the C style variable argument list is | |
8358 | missing (NULL). When running with taint checks enabled, indicates via | |
8359 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
8360 | locales). | |
8361 | ||
bffc3d17 | 8362 | Usually used via one of its frontends C<sv_vcatpvf> and C<sv_vcatpvf_mg>. |
645c22ef | 8363 | |
954c1994 GS |
8364 | =cut |
8365 | */ | |
8366 | ||
8896765a RB |
8367 | |
8368 | #define VECTORIZE_ARGS vecsv = va_arg(*args, SV*);\ | |
8369 | vecstr = (U8*)SvPV_const(vecsv,veclen);\ | |
8370 | vec_utf8 = DO_UTF8(vecsv); | |
8371 | ||
1ef29b0e RGS |
8372 | /* XXX maybe_tainted is never assigned to, so the doc above is lying. */ |
8373 | ||
46fc3d4c | 8374 | void |
7d5ea4e7 | 8375 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8376 | { |
97aff369 | 8377 | dVAR; |
46fc3d4c | 8378 | char *p; |
8379 | char *q; | |
a3b680e6 | 8380 | const char *patend; |
fc36a67e | 8381 | STRLEN origlen; |
46fc3d4c | 8382 | I32 svix = 0; |
27da23d5 | 8383 | static const char nullstr[] = "(null)"; |
a0714e2c | 8384 | SV *argsv = NULL; |
b464bac0 AL |
8385 | bool has_utf8 = DO_UTF8(sv); /* has the result utf8? */ |
8386 | const bool pat_utf8 = has_utf8; /* the pattern is in utf8? */ | |
a0714e2c | 8387 | SV *nsv = NULL; |
4151a5fe IZ |
8388 | /* Times 4: a decimal digit takes more than 3 binary digits. |
8389 | * NV_DIG: mantissa takes than many decimal digits. | |
8390 | * Plus 32: Playing safe. */ | |
8391 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
8392 | /* large enough for "%#.#f" --chip */ | |
8393 | /* what about long double NVs? --jhi */ | |
db79b45b | 8394 | |
53c1dcc0 AL |
8395 | PERL_UNUSED_ARG(maybe_tainted); |
8396 | ||
46fc3d4c | 8397 | /* no matter what, this is a string now */ |
fc36a67e | 8398 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 8399 | |
8896765a | 8400 | /* special-case "", "%s", and "%-p" (SVf - see below) */ |
46fc3d4c | 8401 | if (patlen == 0) |
8402 | return; | |
0dbb1585 | 8403 | if (patlen == 2 && pat[0] == '%' && pat[1] == 's') { |
2d03de9c AL |
8404 | if (args) { |
8405 | const char * const s = va_arg(*args, char*); | |
8406 | sv_catpv(sv, s ? s : nullstr); | |
8407 | } | |
8408 | else if (svix < svmax) { | |
8409 | sv_catsv(sv, *svargs); | |
2d03de9c AL |
8410 | } |
8411 | return; | |
0dbb1585 | 8412 | } |
8896765a RB |
8413 | if (args && patlen == 3 && pat[0] == '%' && |
8414 | pat[1] == '-' && pat[2] == 'p') { | |
6c9570dc | 8415 | argsv = (SV*)va_arg(*args, void*); |
8896765a | 8416 | sv_catsv(sv, argsv); |
8896765a | 8417 | return; |
46fc3d4c | 8418 | } |
8419 | ||
1d917b39 | 8420 | #ifndef USE_LONG_DOUBLE |
4151a5fe | 8421 | /* special-case "%.<number>[gf]" */ |
7af36d83 | 8422 | if ( !args && patlen <= 5 && pat[0] == '%' && pat[1] == '.' |
4151a5fe IZ |
8423 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { |
8424 | unsigned digits = 0; | |
8425 | const char *pp; | |
8426 | ||
8427 | pp = pat + 2; | |
8428 | while (*pp >= '0' && *pp <= '9') | |
8429 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 8430 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
8431 | NV nv; |
8432 | ||
7af36d83 | 8433 | if (svix < svmax) |
4151a5fe IZ |
8434 | nv = SvNV(*svargs); |
8435 | else | |
8436 | return; | |
8437 | if (*pp == 'g') { | |
2873255c NC |
8438 | /* Add check for digits != 0 because it seems that some |
8439 | gconverts are buggy in this case, and we don't yet have | |
8440 | a Configure test for this. */ | |
8441 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
8442 | /* 0, point, slack */ | |
2e59c212 | 8443 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
8444 | sv_catpv(sv, ebuf); |
8445 | if (*ebuf) /* May return an empty string for digits==0 */ | |
8446 | return; | |
8447 | } | |
8448 | } else if (!digits) { | |
8449 | STRLEN l; | |
8450 | ||
8451 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
8452 | sv_catpvn(sv, p, l); | |
8453 | return; | |
8454 | } | |
8455 | } | |
8456 | } | |
8457 | } | |
1d917b39 | 8458 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 8459 | |
2cf2cfc6 | 8460 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 8461 | has_utf8 = TRUE; |
2cf2cfc6 | 8462 | |
46fc3d4c | 8463 | patend = (char*)pat + patlen; |
8464 | for (p = (char*)pat; p < patend; p = q) { | |
8465 | bool alt = FALSE; | |
8466 | bool left = FALSE; | |
b22c7a20 | 8467 | bool vectorize = FALSE; |
211dfcf1 | 8468 | bool vectorarg = FALSE; |
2cf2cfc6 | 8469 | bool vec_utf8 = FALSE; |
46fc3d4c | 8470 | char fill = ' '; |
8471 | char plus = 0; | |
8472 | char intsize = 0; | |
8473 | STRLEN width = 0; | |
fc36a67e | 8474 | STRLEN zeros = 0; |
46fc3d4c | 8475 | bool has_precis = FALSE; |
8476 | STRLEN precis = 0; | |
c445ea15 | 8477 | const I32 osvix = svix; |
2cf2cfc6 | 8478 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
8479 | #ifdef HAS_LDBL_SPRINTF_BUG |
8480 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 8481 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
8482 | bool fix_ldbl_sprintf_bug = FALSE; |
8483 | #endif | |
205f51d8 | 8484 | |
46fc3d4c | 8485 | char esignbuf[4]; |
89ebb4a3 | 8486 | U8 utf8buf[UTF8_MAXBYTES+1]; |
46fc3d4c | 8487 | STRLEN esignlen = 0; |
8488 | ||
bd61b366 | 8489 | const char *eptr = NULL; |
fc36a67e | 8490 | STRLEN elen = 0; |
a0714e2c | 8491 | SV *vecsv = NULL; |
4608196e | 8492 | const U8 *vecstr = NULL; |
b22c7a20 | 8493 | STRLEN veclen = 0; |
934abaf1 | 8494 | char c = 0; |
46fc3d4c | 8495 | int i; |
9c5ffd7c | 8496 | unsigned base = 0; |
8c8eb53c RB |
8497 | IV iv = 0; |
8498 | UV uv = 0; | |
9e5b023a JH |
8499 | /* we need a long double target in case HAS_LONG_DOUBLE but |
8500 | not USE_LONG_DOUBLE | |
8501 | */ | |
35fff930 | 8502 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
8503 | long double nv; |
8504 | #else | |
65202027 | 8505 | NV nv; |
9e5b023a | 8506 | #endif |
46fc3d4c | 8507 | STRLEN have; |
8508 | STRLEN need; | |
8509 | STRLEN gap; | |
7af36d83 | 8510 | const char *dotstr = "."; |
b22c7a20 | 8511 | STRLEN dotstrlen = 1; |
211dfcf1 | 8512 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 8513 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
8514 | I32 epix = 0; /* explicit precision index */ |
8515 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 8516 | bool asterisk = FALSE; |
46fc3d4c | 8517 | |
211dfcf1 | 8518 | /* echo everything up to the next format specification */ |
46fc3d4c | 8519 | for (q = p; q < patend && *q != '%'; ++q) ; |
8520 | if (q > p) { | |
db79b45b JH |
8521 | if (has_utf8 && !pat_utf8) |
8522 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
8523 | else | |
8524 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 8525 | p = q; |
8526 | } | |
8527 | if (q++ >= patend) | |
8528 | break; | |
8529 | ||
211dfcf1 HS |
8530 | /* |
8531 | We allow format specification elements in this order: | |
8532 | \d+\$ explicit format parameter index | |
8533 | [-+ 0#]+ flags | |
a472f209 | 8534 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 8535 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
8536 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
8537 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
8538 | [hlqLV] size | |
8896765a RB |
8539 | [%bcdefginopsuxDFOUX] format (mandatory) |
8540 | */ | |
8541 | ||
8542 | if (args) { | |
8543 | /* | |
8544 | As of perl5.9.3, printf format checking is on by default. | |
8545 | Internally, perl uses %p formats to provide an escape to | |
8546 | some extended formatting. This block deals with those | |
8547 | extensions: if it does not match, (char*)q is reset and | |
8548 | the normal format processing code is used. | |
8549 | ||
8550 | Currently defined extensions are: | |
8551 | %p include pointer address (standard) | |
8552 | %-p (SVf) include an SV (previously %_) | |
8553 | %-<num>p include an SV with precision <num> | |
8554 | %1p (VDf) include a v-string (as %vd) | |
8555 | %<num>p reserved for future extensions | |
8556 | ||
8557 | Robin Barker 2005-07-14 | |
211dfcf1 | 8558 | */ |
8896765a RB |
8559 | char* r = q; |
8560 | bool sv = FALSE; | |
8561 | STRLEN n = 0; | |
8562 | if (*q == '-') | |
8563 | sv = *q++; | |
c445ea15 | 8564 | n = expect_number(&q); |
8896765a RB |
8565 | if (*q++ == 'p') { |
8566 | if (sv) { /* SVf */ | |
8567 | if (n) { | |
8568 | precis = n; | |
8569 | has_precis = TRUE; | |
8570 | } | |
6c9570dc | 8571 | argsv = (SV*)va_arg(*args, void*); |
8896765a RB |
8572 | eptr = SvPVx_const(argsv, elen); |
8573 | if (DO_UTF8(argsv)) | |
8574 | is_utf8 = TRUE; | |
8575 | goto string; | |
8576 | } | |
8577 | #if vdNUMBER | |
8578 | else if (n == vdNUMBER) { /* VDf */ | |
8579 | vectorize = TRUE; | |
8580 | VECTORIZE_ARGS | |
8581 | goto format_vd; | |
8582 | } | |
8583 | #endif | |
8584 | else if (n) { | |
8585 | if (ckWARN_d(WARN_INTERNAL)) | |
8586 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), | |
8587 | "internal %%<num>p might conflict with future printf extensions"); | |
8588 | } | |
8589 | } | |
8590 | q = r; | |
8591 | } | |
8592 | ||
c445ea15 | 8593 | if ( (width = expect_number(&q)) ) { |
211dfcf1 HS |
8594 | if (*q == '$') { |
8595 | ++q; | |
8596 | efix = width; | |
8597 | } else { | |
8598 | goto gotwidth; | |
8599 | } | |
8600 | } | |
8601 | ||
fc36a67e | 8602 | /* FLAGS */ |
8603 | ||
46fc3d4c | 8604 | while (*q) { |
8605 | switch (*q) { | |
8606 | case ' ': | |
8607 | case '+': | |
9911cee9 TS |
8608 | if (plus == '+' && *q == ' ') /* '+' over ' ' */ |
8609 | q++; | |
8610 | else | |
8611 | plus = *q++; | |
46fc3d4c | 8612 | continue; |
8613 | ||
8614 | case '-': | |
8615 | left = TRUE; | |
8616 | q++; | |
8617 | continue; | |
8618 | ||
8619 | case '0': | |
8620 | fill = *q++; | |
8621 | continue; | |
8622 | ||
8623 | case '#': | |
8624 | alt = TRUE; | |
8625 | q++; | |
8626 | continue; | |
8627 | ||
fc36a67e | 8628 | default: |
8629 | break; | |
8630 | } | |
8631 | break; | |
8632 | } | |
46fc3d4c | 8633 | |
211dfcf1 | 8634 | tryasterisk: |
eb3fce90 | 8635 | if (*q == '*') { |
211dfcf1 | 8636 | q++; |
c445ea15 | 8637 | if ( (ewix = expect_number(&q)) ) |
211dfcf1 HS |
8638 | if (*q++ != '$') |
8639 | goto unknown; | |
eb3fce90 | 8640 | asterisk = TRUE; |
211dfcf1 HS |
8641 | } |
8642 | if (*q == 'v') { | |
eb3fce90 | 8643 | q++; |
211dfcf1 HS |
8644 | if (vectorize) |
8645 | goto unknown; | |
9cbac4c7 | 8646 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
8647 | evix = ewix; |
8648 | ewix = 0; | |
8649 | asterisk = FALSE; | |
8650 | } | |
8651 | vectorize = TRUE; | |
8652 | goto tryasterisk; | |
eb3fce90 JH |
8653 | } |
8654 | ||
211dfcf1 | 8655 | if (!asterisk) |
858a90f9 | 8656 | { |
7a5fa8a2 | 8657 | if( *q == '0' ) |
f3583277 | 8658 | fill = *q++; |
c445ea15 | 8659 | width = expect_number(&q); |
858a90f9 | 8660 | } |
211dfcf1 HS |
8661 | |
8662 | if (vectorize) { | |
8663 | if (vectorarg) { | |
8664 | if (args) | |
8665 | vecsv = va_arg(*args, SV*); | |
7ad96abb NC |
8666 | else if (evix) { |
8667 | vecsv = (evix > 0 && evix <= svmax) | |
8668 | ? svargs[evix-1] : &PL_sv_undef; | |
8669 | } else { | |
8670 | vecsv = svix < svmax ? svargs[svix++] : &PL_sv_undef; | |
8671 | } | |
245d4a47 | 8672 | dotstr = SvPV_const(vecsv, dotstrlen); |
640283f5 NC |
8673 | /* Keep the DO_UTF8 test *after* the SvPV call, else things go |
8674 | bad with tied or overloaded values that return UTF8. */ | |
211dfcf1 | 8675 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 8676 | is_utf8 = TRUE; |
640283f5 NC |
8677 | else if (has_utf8) { |
8678 | vecsv = sv_mortalcopy(vecsv); | |
8679 | sv_utf8_upgrade(vecsv); | |
8680 | dotstr = SvPV_const(vecsv, dotstrlen); | |
8681 | is_utf8 = TRUE; | |
8682 | } | |
211dfcf1 HS |
8683 | } |
8684 | if (args) { | |
8896765a | 8685 | VECTORIZE_ARGS |
eb3fce90 | 8686 | } |
7ad96abb | 8687 | else if (efix ? (efix > 0 && efix <= svmax) : svix < svmax) { |
211dfcf1 | 8688 | vecsv = svargs[efix ? efix-1 : svix++]; |
245d4a47 | 8689 | vecstr = (U8*)SvPV_const(vecsv,veclen); |
2cf2cfc6 | 8690 | vec_utf8 = DO_UTF8(vecsv); |
96b8f7ce JP |
8691 | |
8692 | /* if this is a version object, we need to convert | |
8693 | * back into v-string notation and then let the | |
8694 | * vectorize happen normally | |
d7aa5382 | 8695 | */ |
96b8f7ce JP |
8696 | if (sv_derived_from(vecsv, "version")) { |
8697 | char *version = savesvpv(vecsv); | |
34ba6322 SP |
8698 | if ( hv_exists((HV*)SvRV(vecsv), "alpha", 5 ) ) { |
8699 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), | |
8700 | "vector argument not supported with alpha versions"); | |
8701 | goto unknown; | |
8702 | } | |
96b8f7ce JP |
8703 | vecsv = sv_newmortal(); |
8704 | /* scan_vstring is expected to be called during | |
8705 | * tokenization, so we need to fake up the end | |
8706 | * of the buffer for it | |
8707 | */ | |
8708 | PL_bufend = version + veclen; | |
8709 | scan_vstring(version, vecsv); | |
8710 | vecstr = (U8*)SvPV_const(vecsv, veclen); | |
8711 | vec_utf8 = DO_UTF8(vecsv); | |
8712 | Safefree(version); | |
d7aa5382 | 8713 | } |
211dfcf1 HS |
8714 | } |
8715 | else { | |
8716 | vecstr = (U8*)""; | |
8717 | veclen = 0; | |
8718 | } | |
eb3fce90 | 8719 | } |
fc36a67e | 8720 | |
eb3fce90 | 8721 | if (asterisk) { |
fc36a67e | 8722 | if (args) |
8723 | i = va_arg(*args, int); | |
8724 | else | |
eb3fce90 JH |
8725 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
8726 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 8727 | left |= (i < 0); |
8728 | width = (i < 0) ? -i : i; | |
fc36a67e | 8729 | } |
211dfcf1 | 8730 | gotwidth: |
fc36a67e | 8731 | |
8732 | /* PRECISION */ | |
46fc3d4c | 8733 | |
fc36a67e | 8734 | if (*q == '.') { |
8735 | q++; | |
8736 | if (*q == '*') { | |
211dfcf1 | 8737 | q++; |
c445ea15 | 8738 | if ( ((epix = expect_number(&q))) && (*q++ != '$') ) |
7b8dd722 HS |
8739 | goto unknown; |
8740 | /* XXX: todo, support specified precision parameter */ | |
8741 | if (epix) | |
211dfcf1 | 8742 | goto unknown; |
46fc3d4c | 8743 | if (args) |
8744 | i = va_arg(*args, int); | |
8745 | else | |
eb3fce90 JH |
8746 | i = (ewix ? ewix <= svmax : svix < svmax) |
8747 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
9911cee9 TS |
8748 | precis = i; |
8749 | has_precis = !(i < 0); | |
fc36a67e | 8750 | } |
8751 | else { | |
8752 | precis = 0; | |
8753 | while (isDIGIT(*q)) | |
8754 | precis = precis * 10 + (*q++ - '0'); | |
9911cee9 | 8755 | has_precis = TRUE; |
fc36a67e | 8756 | } |
fc36a67e | 8757 | } |
46fc3d4c | 8758 | |
fc36a67e | 8759 | /* SIZE */ |
46fc3d4c | 8760 | |
fc36a67e | 8761 | switch (*q) { |
c623ac67 GS |
8762 | #ifdef WIN32 |
8763 | case 'I': /* Ix, I32x, and I64x */ | |
8764 | # ifdef WIN64 | |
8765 | if (q[1] == '6' && q[2] == '4') { | |
8766 | q += 3; | |
8767 | intsize = 'q'; | |
8768 | break; | |
8769 | } | |
8770 | # endif | |
8771 | if (q[1] == '3' && q[2] == '2') { | |
8772 | q += 3; | |
8773 | break; | |
8774 | } | |
8775 | # ifdef WIN64 | |
8776 | intsize = 'q'; | |
8777 | # endif | |
8778 | q++; | |
8779 | break; | |
8780 | #endif | |
9e5b023a | 8781 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 8782 | case 'L': /* Ld */ |
5f66b61c | 8783 | /*FALLTHROUGH*/ |
e5c81feb | 8784 | #ifdef HAS_QUAD |
6f9bb7fd | 8785 | case 'q': /* qd */ |
9e5b023a | 8786 | #endif |
6f9bb7fd GS |
8787 | intsize = 'q'; |
8788 | q++; | |
8789 | break; | |
8790 | #endif | |
fc36a67e | 8791 | case 'l': |
9e5b023a | 8792 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 8793 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 8794 | intsize = 'q'; |
8795 | q += 2; | |
46fc3d4c | 8796 | break; |
cf2093f6 | 8797 | } |
fc36a67e | 8798 | #endif |
5f66b61c | 8799 | /*FALLTHROUGH*/ |
fc36a67e | 8800 | case 'h': |
5f66b61c | 8801 | /*FALLTHROUGH*/ |
fc36a67e | 8802 | case 'V': |
8803 | intsize = *q++; | |
46fc3d4c | 8804 | break; |
8805 | } | |
8806 | ||
fc36a67e | 8807 | /* CONVERSION */ |
8808 | ||
211dfcf1 HS |
8809 | if (*q == '%') { |
8810 | eptr = q++; | |
8811 | elen = 1; | |
26372e71 GA |
8812 | if (vectorize) { |
8813 | c = '%'; | |
8814 | goto unknown; | |
8815 | } | |
211dfcf1 HS |
8816 | goto string; |
8817 | } | |
8818 | ||
26372e71 | 8819 | if (!vectorize && !args) { |
86c51f8b NC |
8820 | if (efix) { |
8821 | const I32 i = efix-1; | |
8822 | argsv = (i >= 0 && i < svmax) ? svargs[i] : &PL_sv_undef; | |
8823 | } else { | |
8824 | argsv = (svix >= 0 && svix < svmax) | |
8825 | ? svargs[svix++] : &PL_sv_undef; | |
8826 | } | |
863811b2 | 8827 | } |
211dfcf1 | 8828 | |
46fc3d4c | 8829 | switch (c = *q++) { |
8830 | ||
8831 | /* STRINGS */ | |
8832 | ||
46fc3d4c | 8833 | case 'c': |
26372e71 GA |
8834 | if (vectorize) |
8835 | goto unknown; | |
8836 | uv = (args) ? va_arg(*args, int) : SvIVx(argsv); | |
1bd104fb JH |
8837 | if ((uv > 255 || |
8838 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 8839 | && !IN_BYTES) { |
dfe13c55 | 8840 | eptr = (char*)utf8buf; |
9041c2e3 | 8841 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 8842 | is_utf8 = TRUE; |
7e2040f0 GS |
8843 | } |
8844 | else { | |
8845 | c = (char)uv; | |
8846 | eptr = &c; | |
8847 | elen = 1; | |
a0ed51b3 | 8848 | } |
46fc3d4c | 8849 | goto string; |
8850 | ||
46fc3d4c | 8851 | case 's': |
26372e71 GA |
8852 | if (vectorize) |
8853 | goto unknown; | |
8854 | if (args) { | |
fc36a67e | 8855 | eptr = va_arg(*args, char*); |
c635e13b | 8856 | if (eptr) |
1d7c1841 GS |
8857 | #ifdef MACOS_TRADITIONAL |
8858 | /* On MacOS, %#s format is used for Pascal strings */ | |
8859 | if (alt) | |
8860 | elen = *eptr++; | |
8861 | else | |
8862 | #endif | |
c635e13b | 8863 | elen = strlen(eptr); |
8864 | else { | |
27da23d5 | 8865 | eptr = (char *)nullstr; |
c635e13b | 8866 | elen = sizeof nullstr - 1; |
8867 | } | |
46fc3d4c | 8868 | } |
211dfcf1 | 8869 | else { |
4d84ee25 | 8870 | eptr = SvPVx_const(argsv, elen); |
7e2040f0 | 8871 | if (DO_UTF8(argsv)) { |
59b61096 | 8872 | I32 old_precis = precis; |
a0ed51b3 LW |
8873 | if (has_precis && precis < elen) { |
8874 | I32 p = precis; | |
7e2040f0 | 8875 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
8876 | precis = p; |
8877 | } | |
8878 | if (width) { /* fudge width (can't fudge elen) */ | |
59b61096 AV |
8879 | if (has_precis && precis < elen) |
8880 | width += precis - old_precis; | |
8881 | else | |
8882 | width += elen - sv_len_utf8(argsv); | |
a0ed51b3 | 8883 | } |
2cf2cfc6 | 8884 | is_utf8 = TRUE; |
a0ed51b3 LW |
8885 | } |
8886 | } | |
fc36a67e | 8887 | |
46fc3d4c | 8888 | string: |
8889 | if (has_precis && elen > precis) | |
8890 | elen = precis; | |
8891 | break; | |
8892 | ||
8893 | /* INTEGERS */ | |
8894 | ||
fc36a67e | 8895 | case 'p': |
be75b157 | 8896 | if (alt || vectorize) |
c2e66d9e | 8897 | goto unknown; |
211dfcf1 | 8898 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 8899 | base = 16; |
8900 | goto integer; | |
8901 | ||
46fc3d4c | 8902 | case 'D': |
29fe7a80 | 8903 | #ifdef IV_IS_QUAD |
22f3ae8c | 8904 | intsize = 'q'; |
29fe7a80 | 8905 | #else |
46fc3d4c | 8906 | intsize = 'l'; |
29fe7a80 | 8907 | #endif |
5f66b61c | 8908 | /*FALLTHROUGH*/ |
46fc3d4c | 8909 | case 'd': |
8910 | case 'i': | |
8896765a RB |
8911 | #if vdNUMBER |
8912 | format_vd: | |
8913 | #endif | |
b22c7a20 | 8914 | if (vectorize) { |
ba210ebe | 8915 | STRLEN ulen; |
211dfcf1 HS |
8916 | if (!veclen) |
8917 | continue; | |
2cf2cfc6 A |
8918 | if (vec_utf8) |
8919 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
8920 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 8921 | else { |
e83d50c9 | 8922 | uv = *vecstr; |
b22c7a20 GS |
8923 | ulen = 1; |
8924 | } | |
8925 | vecstr += ulen; | |
8926 | veclen -= ulen; | |
e83d50c9 JP |
8927 | if (plus) |
8928 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
8929 | } |
8930 | else if (args) { | |
46fc3d4c | 8931 | switch (intsize) { |
8932 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 8933 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 8934 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 8935 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
8936 | #ifdef HAS_QUAD |
8937 | case 'q': iv = va_arg(*args, Quad_t); break; | |
8938 | #endif | |
46fc3d4c | 8939 | } |
8940 | } | |
8941 | else { | |
b10c0dba | 8942 | IV tiv = SvIVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 8943 | switch (intsize) { |
b10c0dba MHM |
8944 | case 'h': iv = (short)tiv; break; |
8945 | case 'l': iv = (long)tiv; break; | |
8946 | case 'V': | |
8947 | default: iv = tiv; break; | |
cf2093f6 | 8948 | #ifdef HAS_QUAD |
b10c0dba | 8949 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 8950 | #endif |
46fc3d4c | 8951 | } |
8952 | } | |
e83d50c9 JP |
8953 | if ( !vectorize ) /* we already set uv above */ |
8954 | { | |
8955 | if (iv >= 0) { | |
8956 | uv = iv; | |
8957 | if (plus) | |
8958 | esignbuf[esignlen++] = plus; | |
8959 | } | |
8960 | else { | |
8961 | uv = -iv; | |
8962 | esignbuf[esignlen++] = '-'; | |
8963 | } | |
46fc3d4c | 8964 | } |
8965 | base = 10; | |
8966 | goto integer; | |
8967 | ||
fc36a67e | 8968 | case 'U': |
29fe7a80 | 8969 | #ifdef IV_IS_QUAD |
22f3ae8c | 8970 | intsize = 'q'; |
29fe7a80 | 8971 | #else |
fc36a67e | 8972 | intsize = 'l'; |
29fe7a80 | 8973 | #endif |
5f66b61c | 8974 | /*FALLTHROUGH*/ |
fc36a67e | 8975 | case 'u': |
8976 | base = 10; | |
8977 | goto uns_integer; | |
8978 | ||
7ff06cc7 | 8979 | case 'B': |
4f19785b WSI |
8980 | case 'b': |
8981 | base = 2; | |
8982 | goto uns_integer; | |
8983 | ||
46fc3d4c | 8984 | case 'O': |
29fe7a80 | 8985 | #ifdef IV_IS_QUAD |
22f3ae8c | 8986 | intsize = 'q'; |
29fe7a80 | 8987 | #else |
46fc3d4c | 8988 | intsize = 'l'; |
29fe7a80 | 8989 | #endif |
5f66b61c | 8990 | /*FALLTHROUGH*/ |
46fc3d4c | 8991 | case 'o': |
8992 | base = 8; | |
8993 | goto uns_integer; | |
8994 | ||
8995 | case 'X': | |
46fc3d4c | 8996 | case 'x': |
8997 | base = 16; | |
46fc3d4c | 8998 | |
8999 | uns_integer: | |
b22c7a20 | 9000 | if (vectorize) { |
ba210ebe | 9001 | STRLEN ulen; |
b22c7a20 | 9002 | vector: |
211dfcf1 HS |
9003 | if (!veclen) |
9004 | continue; | |
2cf2cfc6 A |
9005 | if (vec_utf8) |
9006 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9007 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9008 | else { |
a05b299f | 9009 | uv = *vecstr; |
b22c7a20 GS |
9010 | ulen = 1; |
9011 | } | |
9012 | vecstr += ulen; | |
9013 | veclen -= ulen; | |
9014 | } | |
9015 | else if (args) { | |
46fc3d4c | 9016 | switch (intsize) { |
9017 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 9018 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 9019 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 9020 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 9021 | #ifdef HAS_QUAD |
9e3321a5 | 9022 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 9023 | #endif |
46fc3d4c | 9024 | } |
9025 | } | |
9026 | else { | |
b10c0dba | 9027 | UV tuv = SvUVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9028 | switch (intsize) { |
b10c0dba MHM |
9029 | case 'h': uv = (unsigned short)tuv; break; |
9030 | case 'l': uv = (unsigned long)tuv; break; | |
9031 | case 'V': | |
9032 | default: uv = tuv; break; | |
cf2093f6 | 9033 | #ifdef HAS_QUAD |
b10c0dba | 9034 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 9035 | #endif |
46fc3d4c | 9036 | } |
9037 | } | |
9038 | ||
9039 | integer: | |
4d84ee25 NC |
9040 | { |
9041 | char *ptr = ebuf + sizeof ebuf; | |
1387f30c DD |
9042 | bool tempalt = uv ? alt : FALSE; /* Vectors can't change alt */ |
9043 | zeros = 0; | |
9044 | ||
4d84ee25 NC |
9045 | switch (base) { |
9046 | unsigned dig; | |
9047 | case 16: | |
14eb61ab | 9048 | p = (char *)((c == 'X') ? PL_hexdigit + 16 : PL_hexdigit); |
4d84ee25 NC |
9049 | do { |
9050 | dig = uv & 15; | |
9051 | *--ptr = p[dig]; | |
9052 | } while (uv >>= 4); | |
1387f30c | 9053 | if (tempalt) { |
4d84ee25 NC |
9054 | esignbuf[esignlen++] = '0'; |
9055 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ | |
9056 | } | |
9057 | break; | |
9058 | case 8: | |
9059 | do { | |
9060 | dig = uv & 7; | |
9061 | *--ptr = '0' + dig; | |
9062 | } while (uv >>= 3); | |
9063 | if (alt && *ptr != '0') | |
9064 | *--ptr = '0'; | |
9065 | break; | |
9066 | case 2: | |
9067 | do { | |
9068 | dig = uv & 1; | |
9069 | *--ptr = '0' + dig; | |
9070 | } while (uv >>= 1); | |
1387f30c | 9071 | if (tempalt) { |
4d84ee25 | 9072 | esignbuf[esignlen++] = '0'; |
7ff06cc7 | 9073 | esignbuf[esignlen++] = c; |
4d84ee25 NC |
9074 | } |
9075 | break; | |
9076 | default: /* it had better be ten or less */ | |
9077 | do { | |
9078 | dig = uv % base; | |
9079 | *--ptr = '0' + dig; | |
9080 | } while (uv /= base); | |
9081 | break; | |
46fc3d4c | 9082 | } |
4d84ee25 NC |
9083 | elen = (ebuf + sizeof ebuf) - ptr; |
9084 | eptr = ptr; | |
9085 | if (has_precis) { | |
9086 | if (precis > elen) | |
9087 | zeros = precis - elen; | |
e6bb52fd TS |
9088 | else if (precis == 0 && elen == 1 && *eptr == '0' |
9089 | && !(base == 8 && alt)) /* "%#.0o" prints "0" */ | |
4d84ee25 | 9090 | elen = 0; |
9911cee9 TS |
9091 | |
9092 | /* a precision nullifies the 0 flag. */ | |
9093 | if (fill == '0') | |
9094 | fill = ' '; | |
eda88b6d | 9095 | } |
c10ed8b9 | 9096 | } |
46fc3d4c | 9097 | break; |
9098 | ||
9099 | /* FLOATING POINT */ | |
9100 | ||
fc36a67e | 9101 | case 'F': |
9102 | c = 'f'; /* maybe %F isn't supported here */ | |
5f66b61c | 9103 | /*FALLTHROUGH*/ |
46fc3d4c | 9104 | case 'e': case 'E': |
fc36a67e | 9105 | case 'f': |
46fc3d4c | 9106 | case 'g': case 'G': |
26372e71 GA |
9107 | if (vectorize) |
9108 | goto unknown; | |
46fc3d4c | 9109 | |
9110 | /* This is evil, but floating point is even more evil */ | |
9111 | ||
9e5b023a JH |
9112 | /* for SV-style calling, we can only get NV |
9113 | for C-style calling, we assume %f is double; | |
9114 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9115 | */ | |
9116 | switch (intsize) { | |
9117 | case 'V': | |
9118 | #if defined(USE_LONG_DOUBLE) | |
9119 | intsize = 'q'; | |
9120 | #endif | |
9121 | break; | |
8a2e3f14 | 9122 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 | 9123 | case 'l': |
5f66b61c | 9124 | /*FALLTHROUGH*/ |
9e5b023a JH |
9125 | default: |
9126 | #if defined(USE_LONG_DOUBLE) | |
9127 | intsize = args ? 0 : 'q'; | |
9128 | #endif | |
9129 | break; | |
9130 | case 'q': | |
9131 | #if defined(HAS_LONG_DOUBLE) | |
9132 | break; | |
9133 | #else | |
5f66b61c | 9134 | /*FALLTHROUGH*/ |
9e5b023a JH |
9135 | #endif |
9136 | case 'h': | |
9e5b023a JH |
9137 | goto unknown; |
9138 | } | |
9139 | ||
9140 | /* now we need (long double) if intsize == 'q', else (double) */ | |
26372e71 | 9141 | nv = (args) ? |
35fff930 JH |
9142 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9143 | intsize == 'q' ? | |
205f51d8 AS |
9144 | va_arg(*args, long double) : |
9145 | va_arg(*args, double) | |
35fff930 | 9146 | #else |
205f51d8 | 9147 | va_arg(*args, double) |
35fff930 | 9148 | #endif |
9e5b023a | 9149 | : SvNVx(argsv); |
fc36a67e | 9150 | |
9151 | need = 0; | |
9152 | if (c != 'e' && c != 'E') { | |
9153 | i = PERL_INT_MIN; | |
9e5b023a JH |
9154 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9155 | will cast our (long double) to (double) */ | |
73b309ea | 9156 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9157 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9158 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9159 | if (i > 0) |
fc36a67e | 9160 | need = BIT_DIGITS(i); |
9161 | } | |
9162 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9163 | |
fc36a67e | 9164 | if (need < width) |
9165 | need = width; | |
9166 | ||
20f6aaab AS |
9167 | #ifdef HAS_LDBL_SPRINTF_BUG |
9168 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9169 | with sfio - Allen <allens@cpan.org> */ |
9170 | ||
9171 | # ifdef DBL_MAX | |
9172 | # define MY_DBL_MAX DBL_MAX | |
9173 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9174 | # if DOUBLESIZE >= 8 | |
9175 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9176 | # else | |
9177 | # define MY_DBL_MAX 3.40282347E+38L | |
9178 | # endif | |
9179 | # endif | |
9180 | ||
9181 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9182 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9183 | # else |
205f51d8 | 9184 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9185 | # endif |
20f6aaab | 9186 | |
205f51d8 AS |
9187 | # ifdef DBL_MIN |
9188 | # define MY_DBL_MIN DBL_MIN | |
9189 | # else /* XXX guessing! -Allen */ | |
9190 | # if DOUBLESIZE >= 8 | |
9191 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9192 | # else | |
9193 | # define MY_DBL_MIN 1.17549435E-38L | |
9194 | # endif | |
9195 | # endif | |
20f6aaab | 9196 | |
205f51d8 AS |
9197 | if ((intsize == 'q') && (c == 'f') && |
9198 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9199 | (need < DBL_DIG)) { | |
9200 | /* it's going to be short enough that | |
9201 | * long double precision is not needed */ | |
9202 | ||
9203 | if ((nv <= 0L) && (nv >= -0L)) | |
9204 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9205 | else { | |
9206 | /* would use Perl_fp_class as a double-check but not | |
9207 | * functional on IRIX - see perl.h comments */ | |
9208 | ||
9209 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9210 | /* It's within the range that a double can represent */ | |
9211 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9212 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9213 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9214 | #endif |
205f51d8 | 9215 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9216 | } |
205f51d8 AS |
9217 | } |
9218 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9219 | double temp; | |
9220 | ||
9221 | intsize = 0; | |
9222 | temp = (double)nv; | |
9223 | nv = (NV)temp; | |
9224 | } | |
20f6aaab | 9225 | } |
205f51d8 AS |
9226 | |
9227 | # undef MY_DBL_MAX | |
9228 | # undef MY_DBL_MAX_BUG | |
9229 | # undef MY_DBL_MIN | |
9230 | ||
20f6aaab AS |
9231 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9232 | ||
46fc3d4c | 9233 | need += 20; /* fudge factor */ |
80252599 GS |
9234 | if (PL_efloatsize < need) { |
9235 | Safefree(PL_efloatbuf); | |
9236 | PL_efloatsize = need + 20; /* more fudge */ | |
a02a5408 | 9237 | Newx(PL_efloatbuf, PL_efloatsize, char); |
7d5ea4e7 | 9238 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9239 | } |
9240 | ||
4151a5fe IZ |
9241 | if ( !(width || left || plus || alt) && fill != '0' |
9242 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
9243 | /* See earlier comment about buggy Gconvert when digits, |
9244 | aka precis is 0 */ | |
9245 | if ( c == 'g' && precis) { | |
2e59c212 | 9246 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4150c189 NC |
9247 | /* May return an empty string for digits==0 */ |
9248 | if (*PL_efloatbuf) { | |
9249 | elen = strlen(PL_efloatbuf); | |
4151a5fe | 9250 | goto float_converted; |
4150c189 | 9251 | } |
4151a5fe IZ |
9252 | } else if ( c == 'f' && !precis) { |
9253 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
9254 | break; | |
9255 | } | |
9256 | } | |
4d84ee25 NC |
9257 | { |
9258 | char *ptr = ebuf + sizeof ebuf; | |
9259 | *--ptr = '\0'; | |
9260 | *--ptr = c; | |
9261 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ | |
9e5b023a | 9262 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) |
4d84ee25 NC |
9263 | if (intsize == 'q') { |
9264 | /* Copy the one or more characters in a long double | |
9265 | * format before the 'base' ([efgEFG]) character to | |
9266 | * the format string. */ | |
9267 | static char const prifldbl[] = PERL_PRIfldbl; | |
9268 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9269 | while (p >= prifldbl) { *--ptr = *p--; } | |
9270 | } | |
65202027 | 9271 | #endif |
4d84ee25 NC |
9272 | if (has_precis) { |
9273 | base = precis; | |
9274 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
9275 | *--ptr = '.'; | |
9276 | } | |
9277 | if (width) { | |
9278 | base = width; | |
9279 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
9280 | } | |
9281 | if (fill == '0') | |
9282 | *--ptr = fill; | |
9283 | if (left) | |
9284 | *--ptr = '-'; | |
9285 | if (plus) | |
9286 | *--ptr = plus; | |
9287 | if (alt) | |
9288 | *--ptr = '#'; | |
9289 | *--ptr = '%'; | |
9290 | ||
9291 | /* No taint. Otherwise we are in the strange situation | |
9292 | * where printf() taints but print($float) doesn't. | |
9293 | * --jhi */ | |
9e5b023a | 9294 | #if defined(HAS_LONG_DOUBLE) |
4150c189 | 9295 | elen = ((intsize == 'q') |
d9fad198 JH |
9296 | ? my_snprintf(PL_efloatbuf, PL_efloatsize, ptr, nv) |
9297 | : my_snprintf(PL_efloatbuf, PL_efloatsize, ptr, (double)nv)); | |
9e5b023a | 9298 | #else |
4150c189 | 9299 | elen = my_sprintf(PL_efloatbuf, ptr, nv); |
9e5b023a | 9300 | #endif |
4d84ee25 | 9301 | } |
4151a5fe | 9302 | float_converted: |
80252599 | 9303 | eptr = PL_efloatbuf; |
46fc3d4c | 9304 | break; |
9305 | ||
fc36a67e | 9306 | /* SPECIAL */ |
9307 | ||
9308 | case 'n': | |
26372e71 GA |
9309 | if (vectorize) |
9310 | goto unknown; | |
fc36a67e | 9311 | i = SvCUR(sv) - origlen; |
26372e71 | 9312 | if (args) { |
c635e13b | 9313 | switch (intsize) { |
9314 | case 'h': *(va_arg(*args, short*)) = i; break; | |
9315 | default: *(va_arg(*args, int*)) = i; break; | |
9316 | case 'l': *(va_arg(*args, long*)) = i; break; | |
9317 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
9318 | #ifdef HAS_QUAD |
9319 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
9320 | #endif | |
c635e13b | 9321 | } |
fc36a67e | 9322 | } |
9dd79c3f | 9323 | else |
211dfcf1 | 9324 | sv_setuv_mg(argsv, (UV)i); |
fc36a67e | 9325 | continue; /* not "break" */ |
9326 | ||
9327 | /* UNKNOWN */ | |
9328 | ||
46fc3d4c | 9329 | default: |
fc36a67e | 9330 | unknown: |
041457d9 DM |
9331 | if (!args |
9332 | && (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF) | |
9333 | && ckWARN(WARN_PRINTF)) | |
9334 | { | |
c4420975 | 9335 | SV * const msg = sv_newmortal(); |
35c1215d NC |
9336 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
9337 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 9338 | if (c) { |
0f4b6630 | 9339 | if (isPRINT(c)) |
1c846c1f | 9340 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
9341 | "\"%%%c\"", c & 0xFF); |
9342 | else | |
9343 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 9344 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 9345 | (UV)c & 0xFF); |
0f4b6630 | 9346 | } else |
396482e1 | 9347 | sv_catpvs(msg, "end of string"); |
be2597df | 9348 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, SVfARG(msg)); /* yes, this is reentrant */ |
c635e13b | 9349 | } |
fb73857a | 9350 | |
9351 | /* output mangled stuff ... */ | |
9352 | if (c == '\0') | |
9353 | --q; | |
46fc3d4c | 9354 | eptr = p; |
9355 | elen = q - p; | |
fb73857a | 9356 | |
9357 | /* ... right here, because formatting flags should not apply */ | |
9358 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9359 | p = SvEND(sv); | |
4459522c | 9360 | Copy(eptr, p, elen, char); |
fb73857a | 9361 | p += elen; |
9362 | *p = '\0'; | |
3f7c398e | 9363 | SvCUR_set(sv, p - SvPVX_const(sv)); |
58e33a90 | 9364 | svix = osvix; |
fb73857a | 9365 | continue; /* not "break" */ |
46fc3d4c | 9366 | } |
9367 | ||
cc61b222 TS |
9368 | if (is_utf8 != has_utf8) { |
9369 | if (is_utf8) { | |
9370 | if (SvCUR(sv)) | |
9371 | sv_utf8_upgrade(sv); | |
9372 | } | |
9373 | else { | |
9374 | const STRLEN old_elen = elen; | |
9375 | SV * const nsv = sv_2mortal(newSVpvn(eptr, elen)); | |
9376 | sv_utf8_upgrade(nsv); | |
9377 | eptr = SvPVX_const(nsv); | |
9378 | elen = SvCUR(nsv); | |
9379 | ||
9380 | if (width) { /* fudge width (can't fudge elen) */ | |
9381 | width += elen - old_elen; | |
9382 | } | |
9383 | is_utf8 = TRUE; | |
9384 | } | |
9385 | } | |
9386 | ||
6c94ec8b | 9387 | have = esignlen + zeros + elen; |
ed2b91d2 GA |
9388 | if (have < zeros) |
9389 | Perl_croak_nocontext(PL_memory_wrap); | |
6c94ec8b | 9390 | |
46fc3d4c | 9391 | need = (have > width ? have : width); |
9392 | gap = need - have; | |
9393 | ||
d2641cbd PC |
9394 | if (need >= (((STRLEN)~0) - SvCUR(sv) - dotstrlen - 1)) |
9395 | Perl_croak_nocontext(PL_memory_wrap); | |
b22c7a20 | 9396 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 9397 | p = SvEND(sv); |
9398 | if (esignlen && fill == '0') { | |
53c1dcc0 | 9399 | int i; |
eb160463 | 9400 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9401 | *p++ = esignbuf[i]; |
9402 | } | |
9403 | if (gap && !left) { | |
9404 | memset(p, fill, gap); | |
9405 | p += gap; | |
9406 | } | |
9407 | if (esignlen && fill != '0') { | |
53c1dcc0 | 9408 | int i; |
eb160463 | 9409 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9410 | *p++ = esignbuf[i]; |
9411 | } | |
fc36a67e | 9412 | if (zeros) { |
53c1dcc0 | 9413 | int i; |
fc36a67e | 9414 | for (i = zeros; i; i--) |
9415 | *p++ = '0'; | |
9416 | } | |
46fc3d4c | 9417 | if (elen) { |
4459522c | 9418 | Copy(eptr, p, elen, char); |
46fc3d4c | 9419 | p += elen; |
9420 | } | |
9421 | if (gap && left) { | |
9422 | memset(p, ' ', gap); | |
9423 | p += gap; | |
9424 | } | |
b22c7a20 GS |
9425 | if (vectorize) { |
9426 | if (veclen) { | |
4459522c | 9427 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
9428 | p += dotstrlen; |
9429 | } | |
9430 | else | |
9431 | vectorize = FALSE; /* done iterating over vecstr */ | |
9432 | } | |
2cf2cfc6 A |
9433 | if (is_utf8) |
9434 | has_utf8 = TRUE; | |
9435 | if (has_utf8) | |
7e2040f0 | 9436 | SvUTF8_on(sv); |
46fc3d4c | 9437 | *p = '\0'; |
3f7c398e | 9438 | SvCUR_set(sv, p - SvPVX_const(sv)); |
b22c7a20 GS |
9439 | if (vectorize) { |
9440 | esignlen = 0; | |
9441 | goto vector; | |
9442 | } | |
46fc3d4c | 9443 | } |
9444 | } | |
51371543 | 9445 | |
645c22ef DM |
9446 | /* ========================================================================= |
9447 | ||
9448 | =head1 Cloning an interpreter | |
9449 | ||
9450 | All the macros and functions in this section are for the private use of | |
9451 | the main function, perl_clone(). | |
9452 | ||
9453 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
9454 | During the course of a cloning, a hash table is used to map old addresses | |
9455 | to new addresses. The table is created and manipulated with the | |
9456 | ptr_table_* functions. | |
9457 | ||
9458 | =cut | |
9459 | ||
9460 | ============================================================================*/ | |
9461 | ||
9462 | ||
1d7c1841 GS |
9463 | #if defined(USE_ITHREADS) |
9464 | ||
d4c19fe8 | 9465 | /* XXX Remove this so it doesn't have to go thru the macro and return for nothing */ |
1d7c1841 GS |
9466 | #ifndef GpREFCNT_inc |
9467 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
9468 | #endif | |
9469 | ||
9470 | ||
a41cc44e | 9471 | /* Certain cases in Perl_ss_dup have been merged, by relying on the fact |
3e07292d NC |
9472 | that currently av_dup, gv_dup and hv_dup are the same as sv_dup. |
9473 | If this changes, please unmerge ss_dup. */ | |
d2d73c3e | 9474 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
7f466ec7 | 9475 | #define sv_dup_inc_NN(s,t) SvREFCNT_inc_NN(sv_dup(s,t)) |
d2d73c3e AB |
9476 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) |
9477 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9478 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
9479 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9480 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
9481 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9482 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
9483 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9484 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
9485 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
6136c704 AL |
9486 | #define SAVEPV(p) ((p) ? savepv(p) : NULL) |
9487 | #define SAVEPVN(p,n) ((p) ? savepvn(p,n) : NULL) | |
8cf8f3d1 | 9488 | |
199e78b7 DM |
9489 | /* clone a parser */ |
9490 | ||
9491 | yy_parser * | |
9492 | Perl_parser_dup(pTHX_ const yy_parser *proto, CLONE_PARAMS* param) | |
9493 | { | |
9494 | yy_parser *parser; | |
9495 | ||
9496 | if (!proto) | |
9497 | return NULL; | |
9498 | ||
7c197c94 DM |
9499 | /* look for it in the table first */ |
9500 | parser = (yy_parser *)ptr_table_fetch(PL_ptr_table, proto); | |
9501 | if (parser) | |
9502 | return parser; | |
9503 | ||
9504 | /* create anew and remember what it is */ | |
199e78b7 | 9505 | Newxz(parser, 1, yy_parser); |
7c197c94 | 9506 | ptr_table_store(PL_ptr_table, proto, parser); |
199e78b7 DM |
9507 | |
9508 | parser->yyerrstatus = 0; | |
9509 | parser->yychar = YYEMPTY; /* Cause a token to be read. */ | |
9510 | ||
9511 | /* XXX these not yet duped */ | |
9512 | parser->old_parser = NULL; | |
9513 | parser->stack = NULL; | |
9514 | parser->ps = NULL; | |
9515 | parser->stack_size = 0; | |
9516 | /* XXX parser->stack->state = 0; */ | |
9517 | ||
9518 | /* XXX eventually, just Copy() most of the parser struct ? */ | |
9519 | ||
9520 | parser->lex_brackets = proto->lex_brackets; | |
9521 | parser->lex_casemods = proto->lex_casemods; | |
9522 | parser->lex_brackstack = savepvn(proto->lex_brackstack, | |
9523 | (proto->lex_brackets < 120 ? 120 : proto->lex_brackets)); | |
9524 | parser->lex_casestack = savepvn(proto->lex_casestack, | |
9525 | (proto->lex_casemods < 12 ? 12 : proto->lex_casemods)); | |
9526 | parser->lex_defer = proto->lex_defer; | |
9527 | parser->lex_dojoin = proto->lex_dojoin; | |
9528 | parser->lex_expect = proto->lex_expect; | |
9529 | parser->lex_formbrack = proto->lex_formbrack; | |
9530 | parser->lex_inpat = proto->lex_inpat; | |
9531 | parser->lex_inwhat = proto->lex_inwhat; | |
9532 | parser->lex_op = proto->lex_op; | |
9533 | parser->lex_repl = sv_dup_inc(proto->lex_repl, param); | |
9534 | parser->lex_starts = proto->lex_starts; | |
9535 | parser->lex_stuff = sv_dup_inc(proto->lex_stuff, param); | |
9536 | parser->multi_close = proto->multi_close; | |
9537 | parser->multi_open = proto->multi_open; | |
9538 | parser->multi_start = proto->multi_start; | |
9539 | parser->pending_ident = proto->pending_ident; | |
9540 | parser->preambled = proto->preambled; | |
9541 | parser->sublex_info = proto->sublex_info; /* XXX not quite right */ | |
9542 | ||
9543 | #ifdef PERL_MAD | |
9544 | parser->endwhite = proto->endwhite; | |
9545 | parser->faketokens = proto->faketokens; | |
9546 | parser->lasttoke = proto->lasttoke; | |
9547 | parser->nextwhite = proto->nextwhite; | |
9548 | parser->realtokenstart = proto->realtokenstart; | |
9549 | parser->skipwhite = proto->skipwhite; | |
9550 | parser->thisclose = proto->thisclose; | |
9551 | parser->thismad = proto->thismad; | |
9552 | parser->thisopen = proto->thisopen; | |
9553 | parser->thisstuff = proto->thisstuff; | |
9554 | parser->thistoken = proto->thistoken; | |
9555 | parser->thiswhite = proto->thiswhite; | |
9556 | #endif | |
9557 | return parser; | |
9558 | } | |
9559 | ||
d2d73c3e | 9560 | |
d2d73c3e | 9561 | /* duplicate a file handle */ |
645c22ef | 9562 | |
1d7c1841 | 9563 | PerlIO * |
a8fc9800 | 9564 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
9565 | { |
9566 | PerlIO *ret; | |
53c1dcc0 AL |
9567 | |
9568 | PERL_UNUSED_ARG(type); | |
73d840c0 | 9569 | |
1d7c1841 GS |
9570 | if (!fp) |
9571 | return (PerlIO*)NULL; | |
9572 | ||
9573 | /* look for it in the table first */ | |
9574 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
9575 | if (ret) | |
9576 | return ret; | |
9577 | ||
9578 | /* create anew and remember what it is */ | |
ecdeb87c | 9579 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
9580 | ptr_table_store(PL_ptr_table, fp, ret); |
9581 | return ret; | |
9582 | } | |
9583 | ||
645c22ef DM |
9584 | /* duplicate a directory handle */ |
9585 | ||
1d7c1841 GS |
9586 | DIR * |
9587 | Perl_dirp_dup(pTHX_ DIR *dp) | |
9588 | { | |
96a5add6 | 9589 | PERL_UNUSED_CONTEXT; |
1d7c1841 GS |
9590 | if (!dp) |
9591 | return (DIR*)NULL; | |
9592 | /* XXX TODO */ | |
9593 | return dp; | |
9594 | } | |
9595 | ||
ff276b08 | 9596 | /* duplicate a typeglob */ |
645c22ef | 9597 | |
1d7c1841 | 9598 | GP * |
a8fc9800 | 9599 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
9600 | { |
9601 | GP *ret; | |
b37c2d43 | 9602 | |
1d7c1841 GS |
9603 | if (!gp) |
9604 | return (GP*)NULL; | |
9605 | /* look for it in the table first */ | |
9606 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
9607 | if (ret) | |
9608 | return ret; | |
9609 | ||
9610 | /* create anew and remember what it is */ | |
a02a5408 | 9611 | Newxz(ret, 1, GP); |
1d7c1841 GS |
9612 | ptr_table_store(PL_ptr_table, gp, ret); |
9613 | ||
9614 | /* clone */ | |
9615 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
9616 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
9617 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
9618 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
9619 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
9620 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
9621 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
9622 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 | 9623 | ret->gp_cvgen = gp->gp_cvgen; |
1d7c1841 | 9624 | ret->gp_line = gp->gp_line; |
f4890806 | 9625 | ret->gp_file_hek = hek_dup(gp->gp_file_hek, param); |
1d7c1841 GS |
9626 | return ret; |
9627 | } | |
9628 | ||
645c22ef DM |
9629 | /* duplicate a chain of magic */ |
9630 | ||
1d7c1841 | 9631 | MAGIC * |
a8fc9800 | 9632 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 9633 | { |
cb359b41 JH |
9634 | MAGIC *mgprev = (MAGIC*)NULL; |
9635 | MAGIC *mgret; | |
1d7c1841 GS |
9636 | if (!mg) |
9637 | return (MAGIC*)NULL; | |
9638 | /* look for it in the table first */ | |
9639 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
9640 | if (mgret) | |
9641 | return mgret; | |
9642 | ||
9643 | for (; mg; mg = mg->mg_moremagic) { | |
9644 | MAGIC *nmg; | |
a02a5408 | 9645 | Newxz(nmg, 1, MAGIC); |
cb359b41 | 9646 | if (mgprev) |
1d7c1841 | 9647 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
9648 | else |
9649 | mgret = nmg; | |
1d7c1841 GS |
9650 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
9651 | nmg->mg_private = mg->mg_private; | |
9652 | nmg->mg_type = mg->mg_type; | |
9653 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 9654 | if (mg->mg_type == PERL_MAGIC_qr) { |
f8149455 | 9655 | nmg->mg_obj = (SV*)CALLREGDUPE((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 9656 | } |
05bd4103 | 9657 | else if(mg->mg_type == PERL_MAGIC_backref) { |
d7cbc7b5 NC |
9658 | /* The backref AV has its reference count deliberately bumped by |
9659 | 1. */ | |
9660 | nmg->mg_obj = SvREFCNT_inc(av_dup_inc((AV*) mg->mg_obj, param)); | |
05bd4103 | 9661 | } |
8d2f4536 NC |
9662 | else if (mg->mg_type == PERL_MAGIC_symtab) { |
9663 | nmg->mg_obj = mg->mg_obj; | |
9664 | } | |
1d7c1841 GS |
9665 | else { |
9666 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
9667 | ? sv_dup_inc(mg->mg_obj, param) |
9668 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
9669 | } |
9670 | nmg->mg_len = mg->mg_len; | |
9671 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 9672 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 9673 | if (mg->mg_len > 0) { |
1d7c1841 | 9674 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
9675 | if (mg->mg_type == PERL_MAGIC_overload_table && |
9676 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
9677 | { | |
c445ea15 | 9678 | const AMT * const amtp = (AMT*)mg->mg_ptr; |
0bcc34c2 | 9679 | AMT * const namtp = (AMT*)nmg->mg_ptr; |
1d7c1841 GS |
9680 | I32 i; |
9681 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 9682 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
9683 | } |
9684 | } | |
9685 | } | |
9686 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 9687 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 9688 | } |
68795e93 NIS |
9689 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
9690 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
9691 | } | |
1d7c1841 GS |
9692 | mgprev = nmg; |
9693 | } | |
9694 | return mgret; | |
9695 | } | |
9696 | ||
4674ade5 NC |
9697 | #endif /* USE_ITHREADS */ |
9698 | ||
645c22ef DM |
9699 | /* create a new pointer-mapping table */ |
9700 | ||
1d7c1841 GS |
9701 | PTR_TBL_t * |
9702 | Perl_ptr_table_new(pTHX) | |
9703 | { | |
9704 | PTR_TBL_t *tbl; | |
96a5add6 AL |
9705 | PERL_UNUSED_CONTEXT; |
9706 | ||
a02a5408 | 9707 | Newxz(tbl, 1, PTR_TBL_t); |
1d7c1841 GS |
9708 | tbl->tbl_max = 511; |
9709 | tbl->tbl_items = 0; | |
a02a5408 | 9710 | Newxz(tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); |
1d7c1841 GS |
9711 | return tbl; |
9712 | } | |
9713 | ||
7119fd33 NC |
9714 | #define PTR_TABLE_HASH(ptr) \ |
9715 | ((PTR2UV(ptr) >> 3) ^ (PTR2UV(ptr) >> (3 + 7)) ^ (PTR2UV(ptr) >> (3 + 17))) | |
134ca3d6 | 9716 | |
93e68bfb JC |
9717 | /* |
9718 | we use the PTE_SVSLOT 'reservation' made above, both here (in the | |
9719 | following define) and at call to new_body_inline made below in | |
9720 | Perl_ptr_table_store() | |
9721 | */ | |
9722 | ||
9723 | #define del_pte(p) del_body_type(p, PTE_SVSLOT) | |
32e691d0 | 9724 | |
645c22ef DM |
9725 | /* map an existing pointer using a table */ |
9726 | ||
7bf61b54 | 9727 | STATIC PTR_TBL_ENT_t * |
b0e6ae5b | 9728 | S_ptr_table_find(PTR_TBL_t *tbl, const void *sv) { |
1d7c1841 | 9729 | PTR_TBL_ENT_t *tblent; |
4373e329 | 9730 | const UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
9731 | assert(tbl); |
9732 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
9733 | for (; tblent; tblent = tblent->next) { | |
9734 | if (tblent->oldval == sv) | |
7bf61b54 | 9735 | return tblent; |
1d7c1841 | 9736 | } |
d4c19fe8 | 9737 | return NULL; |
7bf61b54 NC |
9738 | } |
9739 | ||
9740 | void * | |
9741 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, const void *sv) | |
9742 | { | |
b0e6ae5b | 9743 | PTR_TBL_ENT_t const *const tblent = ptr_table_find(tbl, sv); |
96a5add6 | 9744 | PERL_UNUSED_CONTEXT; |
d4c19fe8 | 9745 | return tblent ? tblent->newval : NULL; |
1d7c1841 GS |
9746 | } |
9747 | ||
645c22ef DM |
9748 | /* add a new entry to a pointer-mapping table */ |
9749 | ||
1d7c1841 | 9750 | void |
44f8325f | 9751 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, const void *oldsv, void *newsv) |
1d7c1841 | 9752 | { |
0c9fdfe0 | 9753 | PTR_TBL_ENT_t *tblent = ptr_table_find(tbl, oldsv); |
96a5add6 | 9754 | PERL_UNUSED_CONTEXT; |
1d7c1841 | 9755 | |
7bf61b54 NC |
9756 | if (tblent) { |
9757 | tblent->newval = newsv; | |
9758 | } else { | |
9759 | const UV entry = PTR_TABLE_HASH(oldsv) & tbl->tbl_max; | |
9760 | ||
d2a0f284 JC |
9761 | new_body_inline(tblent, PTE_SVSLOT); |
9762 | ||
7bf61b54 NC |
9763 | tblent->oldval = oldsv; |
9764 | tblent->newval = newsv; | |
9765 | tblent->next = tbl->tbl_ary[entry]; | |
9766 | tbl->tbl_ary[entry] = tblent; | |
9767 | tbl->tbl_items++; | |
9768 | if (tblent->next && tbl->tbl_items > tbl->tbl_max) | |
9769 | ptr_table_split(tbl); | |
1d7c1841 | 9770 | } |
1d7c1841 GS |
9771 | } |
9772 | ||
645c22ef DM |
9773 | /* double the hash bucket size of an existing ptr table */ |
9774 | ||
1d7c1841 GS |
9775 | void |
9776 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
9777 | { | |
9778 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
4373e329 | 9779 | const UV oldsize = tbl->tbl_max + 1; |
1d7c1841 GS |
9780 | UV newsize = oldsize * 2; |
9781 | UV i; | |
96a5add6 | 9782 | PERL_UNUSED_CONTEXT; |
1d7c1841 GS |
9783 | |
9784 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
9785 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
9786 | tbl->tbl_max = --newsize; | |
9787 | tbl->tbl_ary = ary; | |
9788 | for (i=0; i < oldsize; i++, ary++) { | |
9789 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
9790 | if (!*ary) | |
9791 | continue; | |
9792 | curentp = ary + oldsize; | |
9793 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 9794 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
9795 | *entp = ent->next; |
9796 | ent->next = *curentp; | |
9797 | *curentp = ent; | |
9798 | continue; | |
9799 | } | |
9800 | else | |
9801 | entp = &ent->next; | |
9802 | } | |
9803 | } | |
9804 | } | |
9805 | ||
645c22ef DM |
9806 | /* remove all the entries from a ptr table */ |
9807 | ||
a0739874 DM |
9808 | void |
9809 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
9810 | { | |
d5cefff9 | 9811 | if (tbl && tbl->tbl_items) { |
c445ea15 | 9812 | register PTR_TBL_ENT_t * const * const array = tbl->tbl_ary; |
d5cefff9 | 9813 | UV riter = tbl->tbl_max; |
a0739874 | 9814 | |
d5cefff9 NC |
9815 | do { |
9816 | PTR_TBL_ENT_t *entry = array[riter]; | |
ab1e7f95 | 9817 | |
d5cefff9 | 9818 | while (entry) { |
00b6aa41 | 9819 | PTR_TBL_ENT_t * const oentry = entry; |
d5cefff9 NC |
9820 | entry = entry->next; |
9821 | del_pte(oentry); | |
9822 | } | |
9823 | } while (riter--); | |
a0739874 | 9824 | |
d5cefff9 NC |
9825 | tbl->tbl_items = 0; |
9826 | } | |
a0739874 DM |
9827 | } |
9828 | ||
645c22ef DM |
9829 | /* clear and free a ptr table */ |
9830 | ||
a0739874 DM |
9831 | void |
9832 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
9833 | { | |
9834 | if (!tbl) { | |
9835 | return; | |
9836 | } | |
9837 | ptr_table_clear(tbl); | |
9838 | Safefree(tbl->tbl_ary); | |
9839 | Safefree(tbl); | |
9840 | } | |
9841 | ||
4674ade5 | 9842 | #if defined(USE_ITHREADS) |
5bd07a3d | 9843 | |
83841fad | 9844 | void |
eb86f8b3 | 9845 | Perl_rvpv_dup(pTHX_ SV *dstr, const SV *sstr, CLONE_PARAMS* param) |
83841fad NIS |
9846 | { |
9847 | if (SvROK(sstr)) { | |
b162af07 SP |
9848 | SvRV_set(dstr, SvWEAKREF(sstr) |
9849 | ? sv_dup(SvRV(sstr), param) | |
9850 | : sv_dup_inc(SvRV(sstr), param)); | |
f880fe2f | 9851 | |
83841fad | 9852 | } |
3f7c398e | 9853 | else if (SvPVX_const(sstr)) { |
83841fad NIS |
9854 | /* Has something there */ |
9855 | if (SvLEN(sstr)) { | |
68795e93 | 9856 | /* Normal PV - clone whole allocated space */ |
3f7c398e | 9857 | SvPV_set(dstr, SAVEPVN(SvPVX_const(sstr), SvLEN(sstr)-1)); |
d3d0e6f1 NC |
9858 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
9859 | /* Not that normal - actually sstr is copy on write. | |
9860 | But we are a true, independant SV, so: */ | |
9861 | SvREADONLY_off(dstr); | |
9862 | SvFAKE_off(dstr); | |
9863 | } | |
68795e93 | 9864 | } |
83841fad NIS |
9865 | else { |
9866 | /* Special case - not normally malloced for some reason */ | |
f7877b28 NC |
9867 | if (isGV_with_GP(sstr)) { |
9868 | /* Don't need to do anything here. */ | |
9869 | } | |
9870 | else if ((SvREADONLY(sstr) && SvFAKE(sstr))) { | |
ef10be65 NC |
9871 | /* A "shared" PV - clone it as "shared" PV */ |
9872 | SvPV_set(dstr, | |
9873 | HEK_KEY(hek_dup(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)), | |
9874 | param))); | |
83841fad NIS |
9875 | } |
9876 | else { | |
9877 | /* Some other special case - random pointer */ | |
f880fe2f | 9878 | SvPV_set(dstr, SvPVX(sstr)); |
d3d0e6f1 | 9879 | } |
83841fad NIS |
9880 | } |
9881 | } | |
9882 | else { | |
4608196e | 9883 | /* Copy the NULL */ |
f880fe2f | 9884 | if (SvTYPE(dstr) == SVt_RV) |
b162af07 | 9885 | SvRV_set(dstr, NULL); |
f880fe2f | 9886 | else |
6136c704 | 9887 | SvPV_set(dstr, NULL); |
83841fad NIS |
9888 | } |
9889 | } | |
9890 | ||
662fb8b2 NC |
9891 | /* duplicate an SV of any type (including AV, HV etc) */ |
9892 | ||
1d7c1841 | 9893 | SV * |
eb86f8b3 | 9894 | Perl_sv_dup(pTHX_ const SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 9895 | { |
27da23d5 | 9896 | dVAR; |
1d7c1841 GS |
9897 | SV *dstr; |
9898 | ||
9899 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
6136c704 | 9900 | return NULL; |
1d7c1841 GS |
9901 | /* look for it in the table first */ |
9902 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
9903 | if (dstr) | |
9904 | return dstr; | |
9905 | ||
0405e91e AB |
9906 | if(param->flags & CLONEf_JOIN_IN) { |
9907 | /** We are joining here so we don't want do clone | |
9908 | something that is bad **/ | |
eb86f8b3 AL |
9909 | if (SvTYPE(sstr) == SVt_PVHV) { |
9910 | const char * const hvname = HvNAME_get(sstr); | |
9911 | if (hvname) | |
9912 | /** don't clone stashes if they already exist **/ | |
9913 | return (SV*)gv_stashpv(hvname,0); | |
0405e91e AB |
9914 | } |
9915 | } | |
9916 | ||
1d7c1841 GS |
9917 | /* create anew and remember what it is */ |
9918 | new_SV(dstr); | |
fd0854ff DM |
9919 | |
9920 | #ifdef DEBUG_LEAKING_SCALARS | |
9921 | dstr->sv_debug_optype = sstr->sv_debug_optype; | |
9922 | dstr->sv_debug_line = sstr->sv_debug_line; | |
9923 | dstr->sv_debug_inpad = sstr->sv_debug_inpad; | |
9924 | dstr->sv_debug_cloned = 1; | |
fd0854ff | 9925 | dstr->sv_debug_file = savepv(sstr->sv_debug_file); |
fd0854ff DM |
9926 | #endif |
9927 | ||
1d7c1841 GS |
9928 | ptr_table_store(PL_ptr_table, sstr, dstr); |
9929 | ||
9930 | /* clone */ | |
9931 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
9932 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
9933 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
9934 | ||
9935 | #ifdef DEBUGGING | |
3f7c398e | 9936 | if (SvANY(sstr) && PL_watch_pvx && SvPVX_const(sstr) == PL_watch_pvx) |
1d7c1841 | 9937 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", |
6c9570dc | 9938 | (void*)PL_watch_pvx, SvPVX_const(sstr)); |
1d7c1841 GS |
9939 | #endif |
9940 | ||
9660f481 DM |
9941 | /* don't clone objects whose class has asked us not to */ |
9942 | if (SvOBJECT(sstr) && ! (SvFLAGS(SvSTASH(sstr)) & SVphv_CLONEABLE)) { | |
9943 | SvFLAGS(dstr) &= ~SVTYPEMASK; | |
9944 | SvOBJECT_off(dstr); | |
9945 | return dstr; | |
9946 | } | |
9947 | ||
1d7c1841 GS |
9948 | switch (SvTYPE(sstr)) { |
9949 | case SVt_NULL: | |
9950 | SvANY(dstr) = NULL; | |
9951 | break; | |
9952 | case SVt_IV: | |
339049b0 | 9953 | SvANY(dstr) = (XPVIV*)((char*)&(dstr->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
45977657 | 9954 | SvIV_set(dstr, SvIVX(sstr)); |
1d7c1841 GS |
9955 | break; |
9956 | case SVt_NV: | |
9957 | SvANY(dstr) = new_XNV(); | |
9d6ce603 | 9958 | SvNV_set(dstr, SvNVX(sstr)); |
1d7c1841 GS |
9959 | break; |
9960 | case SVt_RV: | |
339049b0 | 9961 | SvANY(dstr) = &(dstr->sv_u.svu_rv); |
83841fad | 9962 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 | 9963 | break; |
cecf5685 | 9964 | /* case SVt_BIND: */ |
662fb8b2 NC |
9965 | default: |
9966 | { | |
9967 | /* These are all the types that need complex bodies allocating. */ | |
662fb8b2 | 9968 | void *new_body; |
2bcc16b3 NC |
9969 | const svtype sv_type = SvTYPE(sstr); |
9970 | const struct body_details *const sv_type_details | |
9971 | = bodies_by_type + sv_type; | |
662fb8b2 | 9972 | |
93e68bfb | 9973 | switch (sv_type) { |
662fb8b2 | 9974 | default: |
bb263b4e | 9975 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", (IV)SvTYPE(sstr)); |
662fb8b2 NC |
9976 | break; |
9977 | ||
662fb8b2 NC |
9978 | case SVt_PVGV: |
9979 | if (GvUNIQUE((GV*)sstr)) { | |
6f207bd3 | 9980 | NOOP; /* Do sharing here, and fall through */ |
662fb8b2 | 9981 | } |
c22188b4 NC |
9982 | case SVt_PVIO: |
9983 | case SVt_PVFM: | |
9984 | case SVt_PVHV: | |
9985 | case SVt_PVAV: | |
662fb8b2 | 9986 | case SVt_PVCV: |
662fb8b2 | 9987 | case SVt_PVLV: |
662fb8b2 | 9988 | case SVt_PVMG: |
662fb8b2 | 9989 | case SVt_PVNV: |
662fb8b2 | 9990 | case SVt_PVIV: |
662fb8b2 | 9991 | case SVt_PV: |
d2a0f284 | 9992 | assert(sv_type_details->body_size); |
c22188b4 | 9993 | if (sv_type_details->arena) { |
d2a0f284 | 9994 | new_body_inline(new_body, sv_type); |
c22188b4 | 9995 | new_body |
b9502f15 | 9996 | = (void*)((char*)new_body - sv_type_details->offset); |
c22188b4 NC |
9997 | } else { |
9998 | new_body = new_NOARENA(sv_type_details); | |
9999 | } | |
1d7c1841 | 10000 | } |
662fb8b2 NC |
10001 | assert(new_body); |
10002 | SvANY(dstr) = new_body; | |
10003 | ||
2bcc16b3 | 10004 | #ifndef PURIFY |
b9502f15 NC |
10005 | Copy(((char*)SvANY(sstr)) + sv_type_details->offset, |
10006 | ((char*)SvANY(dstr)) + sv_type_details->offset, | |
f32993d6 | 10007 | sv_type_details->copy, char); |
2bcc16b3 NC |
10008 | #else |
10009 | Copy(((char*)SvANY(sstr)), | |
10010 | ((char*)SvANY(dstr)), | |
d2a0f284 | 10011 | sv_type_details->body_size + sv_type_details->offset, char); |
2bcc16b3 | 10012 | #endif |
662fb8b2 | 10013 | |
f7877b28 NC |
10014 | if (sv_type != SVt_PVAV && sv_type != SVt_PVHV |
10015 | && !isGV_with_GP(dstr)) | |
662fb8b2 NC |
10016 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
10017 | ||
10018 | /* The Copy above means that all the source (unduplicated) pointers | |
10019 | are now in the destination. We can check the flags and the | |
10020 | pointers in either, but it's possible that there's less cache | |
10021 | missing by always going for the destination. | |
10022 | FIXME - instrument and check that assumption */ | |
f32993d6 | 10023 | if (sv_type >= SVt_PVMG) { |
885ffcb3 | 10024 | if ((sv_type == SVt_PVMG) && SvPAD_OUR(dstr)) { |
73d95100 | 10025 | SvOURSTASH_set(dstr, hv_dup_inc(SvOURSTASH(dstr), param)); |
e736a858 | 10026 | } else if (SvMAGIC(dstr)) |
662fb8b2 NC |
10027 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(dstr), param)); |
10028 | if (SvSTASH(dstr)) | |
10029 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(dstr), param)); | |
1d7c1841 | 10030 | } |
662fb8b2 | 10031 | |
f32993d6 NC |
10032 | /* The cast silences a GCC warning about unhandled types. */ |
10033 | switch ((int)sv_type) { | |
662fb8b2 NC |
10034 | case SVt_PV: |
10035 | break; | |
10036 | case SVt_PVIV: | |
10037 | break; | |
10038 | case SVt_PVNV: | |
10039 | break; | |
10040 | case SVt_PVMG: | |
10041 | break; | |
662fb8b2 NC |
10042 | case SVt_PVLV: |
10043 | /* XXX LvTARGOFF sometimes holds PMOP* when DEBUGGING */ | |
10044 | if (LvTYPE(dstr) == 't') /* for tie: unrefcnted fake (SV**) */ | |
10045 | LvTARG(dstr) = dstr; | |
10046 | else if (LvTYPE(dstr) == 'T') /* for tie: fake HE */ | |
10047 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(dstr), 0, param); | |
10048 | else | |
10049 | LvTARG(dstr) = sv_dup_inc(LvTARG(dstr), param); | |
662fb8b2 | 10050 | case SVt_PVGV: |
cecf5685 NC |
10051 | if(isGV_with_GP(sstr)) { |
10052 | if (GvNAME_HEK(dstr)) | |
10053 | GvNAME_HEK(dstr) = hek_dup(GvNAME_HEK(dstr), param); | |
39cb70dc NC |
10054 | /* Don't call sv_add_backref here as it's going to be |
10055 | created as part of the magic cloning of the symbol | |
10056 | table. */ | |
f7877b28 NC |
10057 | /* Danger Will Robinson - GvGP(dstr) isn't initialised |
10058 | at the point of this comment. */ | |
39cb70dc | 10059 | GvSTASH(dstr) = hv_dup(GvSTASH(dstr), param); |
f7877b28 NC |
10060 | GvGP(dstr) = gp_dup(GvGP(sstr), param); |
10061 | (void)GpREFCNT_inc(GvGP(dstr)); | |
10062 | } else | |
10063 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); | |
662fb8b2 NC |
10064 | break; |
10065 | case SVt_PVIO: | |
10066 | IoIFP(dstr) = fp_dup(IoIFP(dstr), IoTYPE(dstr), param); | |
10067 | if (IoOFP(dstr) == IoIFP(sstr)) | |
10068 | IoOFP(dstr) = IoIFP(dstr); | |
10069 | else | |
10070 | IoOFP(dstr) = fp_dup(IoOFP(dstr), IoTYPE(dstr), param); | |
10071 | /* PL_rsfp_filters entries have fake IoDIRP() */ | |
662fb8b2 NC |
10072 | if(IoFLAGS(dstr) & IOf_FAKE_DIRP) { |
10073 | /* I have no idea why fake dirp (rsfps) | |
10074 | should be treated differently but otherwise | |
10075 | we end up with leaks -- sky*/ | |
10076 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(dstr), param); | |
10077 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(dstr), param); | |
10078 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(dstr), param); | |
10079 | } else { | |
10080 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(dstr), param); | |
10081 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(dstr), param); | |
10082 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(dstr), param); | |
100ce7e1 NC |
10083 | if (IoDIRP(dstr)) { |
10084 | IoDIRP(dstr) = dirp_dup(IoDIRP(dstr)); | |
10085 | } else { | |
6f207bd3 | 10086 | NOOP; |
100ce7e1 NC |
10087 | /* IoDIRP(dstr) is already a copy of IoDIRP(sstr) */ |
10088 | } | |
662fb8b2 NC |
10089 | } |
10090 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(dstr)); | |
10091 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(dstr)); | |
10092 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(dstr)); | |
10093 | break; | |
10094 | case SVt_PVAV: | |
10095 | if (AvARRAY((AV*)sstr)) { | |
10096 | SV **dst_ary, **src_ary; | |
10097 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10098 | ||
10099 | src_ary = AvARRAY((AV*)sstr); | |
a02a5408 | 10100 | Newxz(dst_ary, AvMAX((AV*)sstr)+1, SV*); |
662fb8b2 | 10101 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); |
9c6bc640 | 10102 | AvARRAY((AV*)dstr) = dst_ary; |
662fb8b2 NC |
10103 | AvALLOC((AV*)dstr) = dst_ary; |
10104 | if (AvREAL((AV*)sstr)) { | |
10105 | while (items-- > 0) | |
10106 | *dst_ary++ = sv_dup_inc(*src_ary++, param); | |
10107 | } | |
10108 | else { | |
10109 | while (items-- > 0) | |
10110 | *dst_ary++ = sv_dup(*src_ary++, param); | |
10111 | } | |
10112 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10113 | while (items-- > 0) { | |
10114 | *dst_ary++ = &PL_sv_undef; | |
10115 | } | |
bfcb3514 | 10116 | } |
662fb8b2 | 10117 | else { |
9c6bc640 | 10118 | AvARRAY((AV*)dstr) = NULL; |
662fb8b2 | 10119 | AvALLOC((AV*)dstr) = (SV**)NULL; |
b79f7545 | 10120 | } |
662fb8b2 NC |
10121 | break; |
10122 | case SVt_PVHV: | |
7e265ef3 AL |
10123 | if (HvARRAY((HV*)sstr)) { |
10124 | STRLEN i = 0; | |
10125 | const bool sharekeys = !!HvSHAREKEYS(sstr); | |
10126 | XPVHV * const dxhv = (XPVHV*)SvANY(dstr); | |
10127 | XPVHV * const sxhv = (XPVHV*)SvANY(sstr); | |
10128 | char *darray; | |
10129 | Newx(darray, PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1) | |
10130 | + (SvOOK(sstr) ? sizeof(struct xpvhv_aux) : 0), | |
10131 | char); | |
10132 | HvARRAY(dstr) = (HE**)darray; | |
10133 | while (i <= sxhv->xhv_max) { | |
10134 | const HE * const source = HvARRAY(sstr)[i]; | |
10135 | HvARRAY(dstr)[i] = source | |
10136 | ? he_dup(source, sharekeys, param) : 0; | |
10137 | ++i; | |
10138 | } | |
10139 | if (SvOOK(sstr)) { | |
10140 | HEK *hvname; | |
10141 | const struct xpvhv_aux * const saux = HvAUX(sstr); | |
10142 | struct xpvhv_aux * const daux = HvAUX(dstr); | |
10143 | /* This flag isn't copied. */ | |
10144 | /* SvOOK_on(hv) attacks the IV flags. */ | |
10145 | SvFLAGS(dstr) |= SVf_OOK; | |
10146 | ||
10147 | hvname = saux->xhv_name; | |
10148 | daux->xhv_name = hvname ? hek_dup(hvname, param) : hvname; | |
10149 | ||
10150 | daux->xhv_riter = saux->xhv_riter; | |
10151 | daux->xhv_eiter = saux->xhv_eiter | |
10152 | ? he_dup(saux->xhv_eiter, | |
10153 | (bool)!!HvSHAREKEYS(sstr), param) : 0; | |
10154 | daux->xhv_backreferences = | |
10155 | saux->xhv_backreferences | |
86f55936 | 10156 | ? (AV*) SvREFCNT_inc( |
7e265ef3 | 10157 | sv_dup((SV*)saux->xhv_backreferences, param)) |
86f55936 | 10158 | : 0; |
7e265ef3 AL |
10159 | /* Record stashes for possible cloning in Perl_clone(). */ |
10160 | if (hvname) | |
10161 | av_push(param->stashes, dstr); | |
662fb8b2 | 10162 | } |
662fb8b2 | 10163 | } |
7e265ef3 | 10164 | else |
797c7171 | 10165 | HvARRAY((HV*)dstr) = NULL; |
662fb8b2 | 10166 | break; |
662fb8b2 | 10167 | case SVt_PVCV: |
bb172083 NC |
10168 | if (!(param->flags & CLONEf_COPY_STACKS)) { |
10169 | CvDEPTH(dstr) = 0; | |
10170 | } | |
10171 | case SVt_PVFM: | |
662fb8b2 NC |
10172 | /* NOTE: not refcounted */ |
10173 | CvSTASH(dstr) = hv_dup(CvSTASH(dstr), param); | |
10174 | OP_REFCNT_LOCK; | |
d04ba589 NC |
10175 | if (!CvISXSUB(dstr)) |
10176 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(dstr)); | |
662fb8b2 | 10177 | OP_REFCNT_UNLOCK; |
cfae286e | 10178 | if (CvCONST(dstr) && CvISXSUB(dstr)) { |
662fb8b2 NC |
10179 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(dstr)) ? |
10180 | SvREFCNT_inc(CvXSUBANY(dstr).any_ptr) : | |
10181 | sv_dup_inc((SV *)CvXSUBANY(dstr).any_ptr, param); | |
10182 | } | |
10183 | /* don't dup if copying back - CvGV isn't refcounted, so the | |
10184 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
10185 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
a0714e2c | 10186 | NULL : gv_dup(CvGV(dstr), param) ; |
662fb8b2 NC |
10187 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); |
10188 | CvOUTSIDE(dstr) = | |
10189 | CvWEAKOUTSIDE(sstr) | |
10190 | ? cv_dup( CvOUTSIDE(dstr), param) | |
10191 | : cv_dup_inc(CvOUTSIDE(dstr), param); | |
aed2304a | 10192 | if (!CvISXSUB(dstr)) |
662fb8b2 NC |
10193 | CvFILE(dstr) = SAVEPV(CvFILE(dstr)); |
10194 | break; | |
bfcb3514 | 10195 | } |
1d7c1841 | 10196 | } |
1d7c1841 GS |
10197 | } |
10198 | ||
10199 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
10200 | ++PL_sv_objcount; | |
10201 | ||
10202 | return dstr; | |
d2d73c3e | 10203 | } |
1d7c1841 | 10204 | |
645c22ef DM |
10205 | /* duplicate a context */ |
10206 | ||
1d7c1841 | 10207 | PERL_CONTEXT * |
a8fc9800 | 10208 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
10209 | { |
10210 | PERL_CONTEXT *ncxs; | |
10211 | ||
10212 | if (!cxs) | |
10213 | return (PERL_CONTEXT*)NULL; | |
10214 | ||
10215 | /* look for it in the table first */ | |
10216 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
10217 | if (ncxs) | |
10218 | return ncxs; | |
10219 | ||
10220 | /* create anew and remember what it is */ | |
a02a5408 | 10221 | Newxz(ncxs, max + 1, PERL_CONTEXT); |
1d7c1841 GS |
10222 | ptr_table_store(PL_ptr_table, cxs, ncxs); |
10223 | ||
10224 | while (ix >= 0) { | |
c445ea15 AL |
10225 | PERL_CONTEXT * const cx = &cxs[ix]; |
10226 | PERL_CONTEXT * const ncx = &ncxs[ix]; | |
1d7c1841 GS |
10227 | ncx->cx_type = cx->cx_type; |
10228 | if (CxTYPE(cx) == CXt_SUBST) { | |
10229 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
10230 | } | |
10231 | else { | |
10232 | ncx->blk_oldsp = cx->blk_oldsp; | |
10233 | ncx->blk_oldcop = cx->blk_oldcop; | |
1d7c1841 GS |
10234 | ncx->blk_oldmarksp = cx->blk_oldmarksp; |
10235 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
10236 | ncx->blk_oldpm = cx->blk_oldpm; | |
10237 | ncx->blk_gimme = cx->blk_gimme; | |
10238 | switch (CxTYPE(cx)) { | |
10239 | case CXt_SUB: | |
10240 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
10241 | ? cv_dup_inc(cx->blk_sub.cv, param) |
10242 | : cv_dup(cx->blk_sub.cv,param)); | |
cc8d50a7 | 10243 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 10244 | ? av_dup_inc(cx->blk_sub.argarray, param) |
7d49f689 | 10245 | : NULL); |
d2d73c3e | 10246 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 | 10247 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
cc8d50a7 NC |
10248 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
10249 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
f39bc417 | 10250 | ncx->blk_sub.retop = cx->blk_sub.retop; |
d8d97e70 DM |
10251 | ncx->blk_sub.oldcomppad = (PAD*)ptr_table_fetch(PL_ptr_table, |
10252 | cx->blk_sub.oldcomppad); | |
1d7c1841 GS |
10253 | break; |
10254 | case CXt_EVAL: | |
10255 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
10256 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 10257 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 10258 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 10259 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
f39bc417 | 10260 | ncx->blk_eval.retop = cx->blk_eval.retop; |
1d7c1841 GS |
10261 | break; |
10262 | case CXt_LOOP: | |
10263 | ncx->blk_loop.label = cx->blk_loop.label; | |
10264 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
022eaa24 | 10265 | ncx->blk_loop.my_op = cx->blk_loop.my_op; |
1d7c1841 GS |
10266 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) |
10267 | ? cx->blk_loop.iterdata | |
d2d73c3e | 10268 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
10269 | ncx->blk_loop.oldcomppad |
10270 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
10271 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
10272 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
10273 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
10274 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
10275 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
10276 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
10277 | break; | |
10278 | case CXt_FORMAT: | |
d2d73c3e AB |
10279 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
10280 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
10281 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
cc8d50a7 | 10282 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
f39bc417 | 10283 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
10284 | break; |
10285 | case CXt_BLOCK: | |
10286 | case CXt_NULL: | |
10287 | break; | |
10288 | } | |
10289 | } | |
10290 | --ix; | |
10291 | } | |
10292 | return ncxs; | |
10293 | } | |
10294 | ||
645c22ef DM |
10295 | /* duplicate a stack info structure */ |
10296 | ||
1d7c1841 | 10297 | PERL_SI * |
a8fc9800 | 10298 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
10299 | { |
10300 | PERL_SI *nsi; | |
10301 | ||
10302 | if (!si) | |
10303 | return (PERL_SI*)NULL; | |
10304 | ||
10305 | /* look for it in the table first */ | |
10306 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
10307 | if (nsi) | |
10308 | return nsi; | |
10309 | ||
10310 | /* create anew and remember what it is */ | |
a02a5408 | 10311 | Newxz(nsi, 1, PERL_SI); |
1d7c1841 GS |
10312 | ptr_table_store(PL_ptr_table, si, nsi); |
10313 | ||
d2d73c3e | 10314 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
10315 | nsi->si_cxix = si->si_cxix; |
10316 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 10317 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 10318 | nsi->si_type = si->si_type; |
d2d73c3e AB |
10319 | nsi->si_prev = si_dup(si->si_prev, param); |
10320 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
10321 | nsi->si_markoff = si->si_markoff; |
10322 | ||
10323 | return nsi; | |
10324 | } | |
10325 | ||
10326 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
10327 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
10328 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
10329 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
10330 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
10331 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
10332 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
10333 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
10334 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
10335 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
10336 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
10337 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
10338 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
10339 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
10340 | ||
10341 | /* XXXXX todo */ | |
10342 | #define pv_dup_inc(p) SAVEPV(p) | |
10343 | #define pv_dup(p) SAVEPV(p) | |
10344 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
10345 | ||
645c22ef DM |
10346 | /* map any object to the new equivent - either something in the |
10347 | * ptr table, or something in the interpreter structure | |
10348 | */ | |
10349 | ||
1d7c1841 | 10350 | void * |
53c1dcc0 | 10351 | Perl_any_dup(pTHX_ void *v, const PerlInterpreter *proto_perl) |
1d7c1841 GS |
10352 | { |
10353 | void *ret; | |
10354 | ||
10355 | if (!v) | |
10356 | return (void*)NULL; | |
10357 | ||
10358 | /* look for it in the table first */ | |
10359 | ret = ptr_table_fetch(PL_ptr_table, v); | |
10360 | if (ret) | |
10361 | return ret; | |
10362 | ||
10363 | /* see if it is part of the interpreter structure */ | |
10364 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 10365 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 10366 | else { |
1d7c1841 | 10367 | ret = v; |
05ec9bb3 | 10368 | } |
1d7c1841 GS |
10369 | |
10370 | return ret; | |
10371 | } | |
10372 | ||
645c22ef DM |
10373 | /* duplicate the save stack */ |
10374 | ||
1d7c1841 | 10375 | ANY * |
a8fc9800 | 10376 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 | 10377 | { |
53d44271 | 10378 | dVAR; |
53c1dcc0 AL |
10379 | ANY * const ss = proto_perl->Tsavestack; |
10380 | const I32 max = proto_perl->Tsavestack_max; | |
10381 | I32 ix = proto_perl->Tsavestack_ix; | |
1d7c1841 GS |
10382 | ANY *nss; |
10383 | SV *sv; | |
10384 | GV *gv; | |
10385 | AV *av; | |
10386 | HV *hv; | |
10387 | void* ptr; | |
10388 | int intval; | |
10389 | long longval; | |
10390 | GP *gp; | |
10391 | IV iv; | |
b24356f5 | 10392 | I32 i; |
c4e33207 | 10393 | char *c = NULL; |
1d7c1841 | 10394 | void (*dptr) (void*); |
acfe0abc | 10395 | void (*dxptr) (pTHX_ void*); |
1d7c1841 | 10396 | |
a02a5408 | 10397 | Newxz(nss, max, ANY); |
1d7c1841 GS |
10398 | |
10399 | while (ix > 0) { | |
b24356f5 NC |
10400 | const I32 type = POPINT(ss,ix); |
10401 | TOPINT(nss,ix) = type; | |
10402 | switch (type) { | |
3e07292d NC |
10403 | case SAVEt_HELEM: /* hash element */ |
10404 | sv = (SV*)POPPTR(ss,ix); | |
10405 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); | |
10406 | /* fall through */ | |
1d7c1841 | 10407 | case SAVEt_ITEM: /* normal string */ |
a41cc44e | 10408 | case SAVEt_SV: /* scalar reference */ |
1d7c1841 | 10409 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10410 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
3e07292d NC |
10411 | /* fall through */ |
10412 | case SAVEt_FREESV: | |
10413 | case SAVEt_MORTALIZESV: | |
1d7c1841 | 10414 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10415 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10416 | break; |
05ec9bb3 NIS |
10417 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
10418 | c = (char*)POPPTR(ss,ix); | |
10419 | TOPPTR(nss,ix) = savesharedpv(c); | |
10420 | ptr = POPPTR(ss,ix); | |
10421 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10422 | break; | |
1d7c1841 GS |
10423 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
10424 | case SAVEt_SVREF: /* scalar reference */ | |
10425 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10426 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10427 | ptr = POPPTR(ss,ix); |
10428 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
10429 | break; | |
a41cc44e | 10430 | case SAVEt_HV: /* hash reference */ |
1d7c1841 | 10431 | case SAVEt_AV: /* array reference */ |
11b79775 | 10432 | sv = (SV*) POPPTR(ss,ix); |
337d28f5 | 10433 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
3e07292d NC |
10434 | /* fall through */ |
10435 | case SAVEt_COMPPAD: | |
10436 | case SAVEt_NSTAB: | |
667e2948 | 10437 | sv = (SV*) POPPTR(ss,ix); |
3e07292d | 10438 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
10439 | break; |
10440 | case SAVEt_INT: /* int reference */ | |
10441 | ptr = POPPTR(ss,ix); | |
10442 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10443 | intval = (int)POPINT(ss,ix); | |
10444 | TOPINT(nss,ix) = intval; | |
10445 | break; | |
10446 | case SAVEt_LONG: /* long reference */ | |
10447 | ptr = POPPTR(ss,ix); | |
10448 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
3e07292d NC |
10449 | /* fall through */ |
10450 | case SAVEt_CLEARSV: | |
1d7c1841 GS |
10451 | longval = (long)POPLONG(ss,ix); |
10452 | TOPLONG(nss,ix) = longval; | |
10453 | break; | |
10454 | case SAVEt_I32: /* I32 reference */ | |
10455 | case SAVEt_I16: /* I16 reference */ | |
10456 | case SAVEt_I8: /* I8 reference */ | |
88effcc9 | 10457 | case SAVEt_COP_ARYBASE: /* call CopARYBASE_set */ |
1d7c1841 GS |
10458 | ptr = POPPTR(ss,ix); |
10459 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
1ccabee8 | 10460 | i = POPINT(ss,ix); |
1d7c1841 GS |
10461 | TOPINT(nss,ix) = i; |
10462 | break; | |
10463 | case SAVEt_IV: /* IV reference */ | |
10464 | ptr = POPPTR(ss,ix); | |
10465 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10466 | iv = POPIV(ss,ix); | |
10467 | TOPIV(nss,ix) = iv; | |
10468 | break; | |
a41cc44e NC |
10469 | case SAVEt_HPTR: /* HV* reference */ |
10470 | case SAVEt_APTR: /* AV* reference */ | |
1d7c1841 GS |
10471 | case SAVEt_SPTR: /* SV* reference */ |
10472 | ptr = POPPTR(ss,ix); | |
10473 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10474 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10475 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
10476 | break; |
10477 | case SAVEt_VPTR: /* random* reference */ | |
10478 | ptr = POPPTR(ss,ix); | |
10479 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10480 | ptr = POPPTR(ss,ix); | |
10481 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10482 | break; | |
b03d03b0 | 10483 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
1d7c1841 GS |
10484 | case SAVEt_PPTR: /* char* reference */ |
10485 | ptr = POPPTR(ss,ix); | |
10486 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10487 | c = (char*)POPPTR(ss,ix); | |
10488 | TOPPTR(nss,ix) = pv_dup(c); | |
10489 | break; | |
1d7c1841 GS |
10490 | case SAVEt_GP: /* scalar reference */ |
10491 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 10492 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
10493 | (void)GpREFCNT_inc(gp); |
10494 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 10495 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 10496 | break; |
1d7c1841 GS |
10497 | case SAVEt_FREEOP: |
10498 | ptr = POPPTR(ss,ix); | |
10499 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
10500 | /* these are assumed to be refcounted properly */ | |
53c1dcc0 | 10501 | OP *o; |
1d7c1841 GS |
10502 | switch (((OP*)ptr)->op_type) { |
10503 | case OP_LEAVESUB: | |
10504 | case OP_LEAVESUBLV: | |
10505 | case OP_LEAVEEVAL: | |
10506 | case OP_LEAVE: | |
10507 | case OP_SCOPE: | |
10508 | case OP_LEAVEWRITE: | |
e977893f GS |
10509 | TOPPTR(nss,ix) = ptr; |
10510 | o = (OP*)ptr; | |
d3c72c2a | 10511 | OP_REFCNT_LOCK; |
e977893f | 10512 | OpREFCNT_inc(o); |
d3c72c2a | 10513 | OP_REFCNT_UNLOCK; |
1d7c1841 GS |
10514 | break; |
10515 | default: | |
5f66b61c | 10516 | TOPPTR(nss,ix) = NULL; |
1d7c1841 GS |
10517 | break; |
10518 | } | |
10519 | } | |
10520 | else | |
5f66b61c | 10521 | TOPPTR(nss,ix) = NULL; |
1d7c1841 GS |
10522 | break; |
10523 | case SAVEt_FREEPV: | |
10524 | c = (char*)POPPTR(ss,ix); | |
10525 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
10526 | break; | |
1d7c1841 GS |
10527 | case SAVEt_DELETE: |
10528 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10529 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
10530 | c = (char*)POPPTR(ss,ix); |
10531 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
3e07292d NC |
10532 | /* fall through */ |
10533 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
1d7c1841 GS |
10534 | i = POPINT(ss,ix); |
10535 | TOPINT(nss,ix) = i; | |
10536 | break; | |
10537 | case SAVEt_DESTRUCTOR: | |
10538 | ptr = POPPTR(ss,ix); | |
10539 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10540 | dptr = POPDPTR(ss,ix); | |
8141890a JH |
10541 | TOPDPTR(nss,ix) = DPTR2FPTR(void (*)(void*), |
10542 | any_dup(FPTR2DPTR(void *, dptr), | |
10543 | proto_perl)); | |
1d7c1841 GS |
10544 | break; |
10545 | case SAVEt_DESTRUCTOR_X: | |
10546 | ptr = POPPTR(ss,ix); | |
10547 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
10548 | dxptr = POPDXPTR(ss,ix); | |
8141890a JH |
10549 | TOPDXPTR(nss,ix) = DPTR2FPTR(void (*)(pTHX_ void*), |
10550 | any_dup(FPTR2DPTR(void *, dxptr), | |
10551 | proto_perl)); | |
1d7c1841 GS |
10552 | break; |
10553 | case SAVEt_REGCONTEXT: | |
10554 | case SAVEt_ALLOC: | |
10555 | i = POPINT(ss,ix); | |
10556 | TOPINT(nss,ix) = i; | |
10557 | ix -= i; | |
10558 | break; | |
1d7c1841 GS |
10559 | case SAVEt_AELEM: /* array element */ |
10560 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10561 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10562 | i = POPINT(ss,ix); |
10563 | TOPINT(nss,ix) = i; | |
10564 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10565 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 10566 | break; |
1d7c1841 GS |
10567 | case SAVEt_OP: |
10568 | ptr = POPPTR(ss,ix); | |
10569 | TOPPTR(nss,ix) = ptr; | |
10570 | break; | |
10571 | case SAVEt_HINTS: | |
10572 | i = POPINT(ss,ix); | |
10573 | TOPINT(nss,ix) = i; | |
b3ca2e83 | 10574 | ptr = POPPTR(ss,ix); |
080ac856 | 10575 | if (ptr) { |
7b6dd8c3 | 10576 | HINTS_REFCNT_LOCK; |
080ac856 | 10577 | ((struct refcounted_he *)ptr)->refcounted_he_refcnt++; |
7b6dd8c3 NC |
10578 | HINTS_REFCNT_UNLOCK; |
10579 | } | |
cbb1fbea | 10580 | TOPPTR(nss,ix) = ptr; |
a8f8b6a7 NC |
10581 | if (i & HINT_LOCALIZE_HH) { |
10582 | hv = (HV*)POPPTR(ss,ix); | |
10583 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); | |
10584 | } | |
1d7c1841 | 10585 | break; |
c3564e5c GS |
10586 | case SAVEt_PADSV: |
10587 | longval = (long)POPLONG(ss,ix); | |
10588 | TOPLONG(nss,ix) = longval; | |
10589 | ptr = POPPTR(ss,ix); | |
10590 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10591 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10592 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 10593 | break; |
a1bb4754 | 10594 | case SAVEt_BOOL: |
38d8b13e | 10595 | ptr = POPPTR(ss,ix); |
b9609c01 | 10596 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 10597 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 10598 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 10599 | break; |
8bd2680e MHM |
10600 | case SAVEt_SET_SVFLAGS: |
10601 | i = POPINT(ss,ix); | |
10602 | TOPINT(nss,ix) = i; | |
10603 | i = POPINT(ss,ix); | |
10604 | TOPINT(nss,ix) = i; | |
10605 | sv = (SV*)POPPTR(ss,ix); | |
10606 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
10607 | break; | |
5bfb7d0e NC |
10608 | case SAVEt_RE_STATE: |
10609 | { | |
10610 | const struct re_save_state *const old_state | |
10611 | = (struct re_save_state *) | |
10612 | (ss + ix - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE); | |
10613 | struct re_save_state *const new_state | |
10614 | = (struct re_save_state *) | |
10615 | (nss + ix - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE); | |
10616 | ||
10617 | Copy(old_state, new_state, 1, struct re_save_state); | |
10618 | ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE; | |
10619 | ||
10620 | new_state->re_state_bostr | |
10621 | = pv_dup(old_state->re_state_bostr); | |
10622 | new_state->re_state_reginput | |
10623 | = pv_dup(old_state->re_state_reginput); | |
5bfb7d0e NC |
10624 | new_state->re_state_regeol |
10625 | = pv_dup(old_state->re_state_regeol); | |
10626 | new_state->re_state_regstartp | |
11b79775 | 10627 | = (I32*) any_dup(old_state->re_state_regstartp, proto_perl); |
5bfb7d0e | 10628 | new_state->re_state_regendp |
11b79775 | 10629 | = (I32*) any_dup(old_state->re_state_regendp, proto_perl); |
5bfb7d0e | 10630 | new_state->re_state_reglastparen |
11b79775 DD |
10631 | = (U32*) any_dup(old_state->re_state_reglastparen, |
10632 | proto_perl); | |
5bfb7d0e | 10633 | new_state->re_state_reglastcloseparen |
11b79775 | 10634 | = (U32*)any_dup(old_state->re_state_reglastcloseparen, |
5bfb7d0e | 10635 | proto_perl); |
5bfb7d0e NC |
10636 | /* XXX This just has to be broken. The old save_re_context |
10637 | code did SAVEGENERICPV(PL_reg_start_tmp); | |
10638 | PL_reg_start_tmp is char **. | |
10639 | Look above to what the dup code does for | |
10640 | SAVEt_GENERIC_PVREF | |
10641 | It can never have worked. | |
10642 | So this is merely a faithful copy of the exiting bug: */ | |
10643 | new_state->re_state_reg_start_tmp | |
10644 | = (char **) pv_dup((char *) | |
10645 | old_state->re_state_reg_start_tmp); | |
10646 | /* I assume that it only ever "worked" because no-one called | |
10647 | (pseudo)fork while the regexp engine had re-entered itself. | |
10648 | */ | |
5bfb7d0e NC |
10649 | #ifdef PERL_OLD_COPY_ON_WRITE |
10650 | new_state->re_state_nrs | |
10651 | = sv_dup(old_state->re_state_nrs, param); | |
10652 | #endif | |
10653 | new_state->re_state_reg_magic | |
11b79775 DD |
10654 | = (MAGIC*) any_dup(old_state->re_state_reg_magic, |
10655 | proto_perl); | |
5bfb7d0e | 10656 | new_state->re_state_reg_oldcurpm |
11b79775 DD |
10657 | = (PMOP*) any_dup(old_state->re_state_reg_oldcurpm, |
10658 | proto_perl); | |
5bfb7d0e | 10659 | new_state->re_state_reg_curpm |
11b79775 DD |
10660 | = (PMOP*) any_dup(old_state->re_state_reg_curpm, |
10661 | proto_perl); | |
5bfb7d0e NC |
10662 | new_state->re_state_reg_oldsaved |
10663 | = pv_dup(old_state->re_state_reg_oldsaved); | |
10664 | new_state->re_state_reg_poscache | |
10665 | = pv_dup(old_state->re_state_reg_poscache); | |
5bfb7d0e NC |
10666 | new_state->re_state_reg_starttry |
10667 | = pv_dup(old_state->re_state_reg_starttry); | |
5bfb7d0e NC |
10668 | break; |
10669 | } | |
68da3b2f NC |
10670 | case SAVEt_COMPILE_WARNINGS: |
10671 | ptr = POPPTR(ss,ix); | |
10672 | TOPPTR(nss,ix) = DUP_WARNINGS((STRLEN*)ptr); | |
7b6dd8c3 | 10673 | break; |
7c197c94 DM |
10674 | case SAVEt_PARSER: |
10675 | ptr = POPPTR(ss,ix); | |
10676 | TOPPTR(nss,ix) = parser_dup(ptr, param); | |
10677 | break; | |
1d7c1841 | 10678 | default: |
147bc374 NC |
10679 | Perl_croak(aTHX_ |
10680 | "panic: ss_dup inconsistency (%"IVdf")", (IV) type); | |
1d7c1841 GS |
10681 | } |
10682 | } | |
10683 | ||
bd81e77b NC |
10684 | return nss; |
10685 | } | |
10686 | ||
10687 | ||
10688 | /* if sv is a stash, call $class->CLONE_SKIP(), and set the SVphv_CLONEABLE | |
10689 | * flag to the result. This is done for each stash before cloning starts, | |
10690 | * so we know which stashes want their objects cloned */ | |
10691 | ||
10692 | static void | |
10693 | do_mark_cloneable_stash(pTHX_ SV *sv) | |
10694 | { | |
10695 | const HEK * const hvname = HvNAME_HEK((HV*)sv); | |
10696 | if (hvname) { | |
10697 | GV* const cloner = gv_fetchmethod_autoload((HV*)sv, "CLONE_SKIP", 0); | |
10698 | SvFLAGS(sv) |= SVphv_CLONEABLE; /* clone objects by default */ | |
10699 | if (cloner && GvCV(cloner)) { | |
10700 | dSP; | |
10701 | UV status; | |
10702 | ||
10703 | ENTER; | |
10704 | SAVETMPS; | |
10705 | PUSHMARK(SP); | |
10706 | XPUSHs(sv_2mortal(newSVhek(hvname))); | |
10707 | PUTBACK; | |
10708 | call_sv((SV*)GvCV(cloner), G_SCALAR); | |
10709 | SPAGAIN; | |
10710 | status = POPu; | |
10711 | PUTBACK; | |
10712 | FREETMPS; | |
10713 | LEAVE; | |
10714 | if (status) | |
10715 | SvFLAGS(sv) &= ~SVphv_CLONEABLE; | |
10716 | } | |
10717 | } | |
10718 | } | |
10719 | ||
10720 | ||
10721 | ||
10722 | /* | |
10723 | =for apidoc perl_clone | |
10724 | ||
10725 | Create and return a new interpreter by cloning the current one. | |
10726 | ||
10727 | perl_clone takes these flags as parameters: | |
10728 | ||
10729 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, | |
10730 | without it we only clone the data and zero the stacks, | |
10731 | with it we copy the stacks and the new perl interpreter is | |
10732 | ready to run at the exact same point as the previous one. | |
10733 | The pseudo-fork code uses COPY_STACKS while the | |
10734 | threads->new doesn't. | |
10735 | ||
10736 | CLONEf_KEEP_PTR_TABLE | |
10737 | perl_clone keeps a ptr_table with the pointer of the old | |
10738 | variable as a key and the new variable as a value, | |
10739 | this allows it to check if something has been cloned and not | |
10740 | clone it again but rather just use the value and increase the | |
10741 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
10742 | the ptr_table using the function | |
10743 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
10744 | reason to keep it around is if you want to dup some of your own | |
10745 | variable who are outside the graph perl scans, example of this | |
10746 | code is in threads.xs create | |
10747 | ||
10748 | CLONEf_CLONE_HOST | |
10749 | This is a win32 thing, it is ignored on unix, it tells perls | |
10750 | win32host code (which is c++) to clone itself, this is needed on | |
10751 | win32 if you want to run two threads at the same time, | |
10752 | if you just want to do some stuff in a separate perl interpreter | |
10753 | and then throw it away and return to the original one, | |
10754 | you don't need to do anything. | |
10755 | ||
10756 | =cut | |
10757 | */ | |
10758 | ||
10759 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
10760 | EXTERN_C PerlInterpreter * | |
10761 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
10762 | ||
10763 | PerlInterpreter * | |
10764 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
10765 | { | |
10766 | dVAR; | |
10767 | #ifdef PERL_IMPLICIT_SYS | |
10768 | ||
10769 | /* perlhost.h so we need to call into it | |
10770 | to clone the host, CPerlHost should have a c interface, sky */ | |
10771 | ||
10772 | if (flags & CLONEf_CLONE_HOST) { | |
10773 | return perl_clone_host(proto_perl,flags); | |
10774 | } | |
10775 | return perl_clone_using(proto_perl, flags, | |
10776 | proto_perl->IMem, | |
10777 | proto_perl->IMemShared, | |
10778 | proto_perl->IMemParse, | |
10779 | proto_perl->IEnv, | |
10780 | proto_perl->IStdIO, | |
10781 | proto_perl->ILIO, | |
10782 | proto_perl->IDir, | |
10783 | proto_perl->ISock, | |
10784 | proto_perl->IProc); | |
10785 | } | |
10786 | ||
10787 | PerlInterpreter * | |
10788 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
10789 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
10790 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
10791 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
10792 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
10793 | struct IPerlProc* ipP) | |
10794 | { | |
10795 | /* XXX many of the string copies here can be optimized if they're | |
10796 | * constants; they need to be allocated as common memory and just | |
10797 | * their pointers copied. */ | |
10798 | ||
10799 | IV i; | |
10800 | CLONE_PARAMS clone_params; | |
5f66b61c | 10801 | CLONE_PARAMS* const param = &clone_params; |
bd81e77b | 10802 | |
5f66b61c | 10803 | PerlInterpreter * const my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
bd81e77b NC |
10804 | /* for each stash, determine whether its objects should be cloned */ |
10805 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
10806 | PERL_SET_THX(my_perl); | |
10807 | ||
10808 | # ifdef DEBUGGING | |
7e337ee0 | 10809 | PoisonNew(my_perl, 1, PerlInterpreter); |
5f66b61c AL |
10810 | PL_op = NULL; |
10811 | PL_curcop = NULL; | |
bd81e77b NC |
10812 | PL_markstack = 0; |
10813 | PL_scopestack = 0; | |
10814 | PL_savestack = 0; | |
10815 | PL_savestack_ix = 0; | |
10816 | PL_savestack_max = -1; | |
10817 | PL_sig_pending = 0; | |
10818 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); | |
10819 | # else /* !DEBUGGING */ | |
10820 | Zero(my_perl, 1, PerlInterpreter); | |
10821 | # endif /* DEBUGGING */ | |
10822 | ||
10823 | /* host pointers */ | |
10824 | PL_Mem = ipM; | |
10825 | PL_MemShared = ipMS; | |
10826 | PL_MemParse = ipMP; | |
10827 | PL_Env = ipE; | |
10828 | PL_StdIO = ipStd; | |
10829 | PL_LIO = ipLIO; | |
10830 | PL_Dir = ipD; | |
10831 | PL_Sock = ipS; | |
10832 | PL_Proc = ipP; | |
10833 | #else /* !PERL_IMPLICIT_SYS */ | |
10834 | IV i; | |
10835 | CLONE_PARAMS clone_params; | |
10836 | CLONE_PARAMS* param = &clone_params; | |
5f66b61c | 10837 | PerlInterpreter * const my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
bd81e77b NC |
10838 | /* for each stash, determine whether its objects should be cloned */ |
10839 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
10840 | PERL_SET_THX(my_perl); | |
10841 | ||
10842 | # ifdef DEBUGGING | |
7e337ee0 | 10843 | PoisonNew(my_perl, 1, PerlInterpreter); |
5f66b61c AL |
10844 | PL_op = NULL; |
10845 | PL_curcop = NULL; | |
bd81e77b NC |
10846 | PL_markstack = 0; |
10847 | PL_scopestack = 0; | |
10848 | PL_savestack = 0; | |
10849 | PL_savestack_ix = 0; | |
10850 | PL_savestack_max = -1; | |
10851 | PL_sig_pending = 0; | |
10852 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); | |
10853 | # else /* !DEBUGGING */ | |
10854 | Zero(my_perl, 1, PerlInterpreter); | |
10855 | # endif /* DEBUGGING */ | |
10856 | #endif /* PERL_IMPLICIT_SYS */ | |
10857 | param->flags = flags; | |
10858 | param->proto_perl = proto_perl; | |
10859 | ||
7cb608b5 NC |
10860 | INIT_TRACK_MEMPOOL(my_perl->Imemory_debug_header, my_perl); |
10861 | ||
fdda85ca | 10862 | PL_body_arenas = NULL; |
bd81e77b NC |
10863 | Zero(&PL_body_roots, 1, PL_body_roots); |
10864 | ||
10865 | PL_nice_chunk = NULL; | |
10866 | PL_nice_chunk_size = 0; | |
10867 | PL_sv_count = 0; | |
10868 | PL_sv_objcount = 0; | |
a0714e2c SS |
10869 | PL_sv_root = NULL; |
10870 | PL_sv_arenaroot = NULL; | |
bd81e77b NC |
10871 | |
10872 | PL_debug = proto_perl->Idebug; | |
10873 | ||
10874 | PL_hash_seed = proto_perl->Ihash_seed; | |
10875 | PL_rehash_seed = proto_perl->Irehash_seed; | |
10876 | ||
10877 | #ifdef USE_REENTRANT_API | |
10878 | /* XXX: things like -Dm will segfault here in perlio, but doing | |
10879 | * PERL_SET_CONTEXT(proto_perl); | |
10880 | * breaks too many other things | |
10881 | */ | |
10882 | Perl_reentrant_init(aTHX); | |
10883 | #endif | |
10884 | ||
10885 | /* create SV map for pointer relocation */ | |
10886 | PL_ptr_table = ptr_table_new(); | |
10887 | ||
10888 | /* initialize these special pointers as early as possible */ | |
10889 | SvANY(&PL_sv_undef) = NULL; | |
10890 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
10891 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
10892 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
10893 | ||
10894 | SvANY(&PL_sv_no) = new_XPVNV(); | |
10895 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; | |
10896 | SvFLAGS(&PL_sv_no) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK | |
10897 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
bb7a0f54 | 10898 | SvPV_set(&PL_sv_no, savepvn(PL_No, 0)); |
bd81e77b NC |
10899 | SvCUR_set(&PL_sv_no, 0); |
10900 | SvLEN_set(&PL_sv_no, 1); | |
10901 | SvIV_set(&PL_sv_no, 0); | |
10902 | SvNV_set(&PL_sv_no, 0); | |
10903 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); | |
10904 | ||
10905 | SvANY(&PL_sv_yes) = new_XPVNV(); | |
10906 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; | |
10907 | SvFLAGS(&PL_sv_yes) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK | |
10908 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
bb7a0f54 | 10909 | SvPV_set(&PL_sv_yes, savepvn(PL_Yes, 1)); |
bd81e77b NC |
10910 | SvCUR_set(&PL_sv_yes, 1); |
10911 | SvLEN_set(&PL_sv_yes, 2); | |
10912 | SvIV_set(&PL_sv_yes, 1); | |
10913 | SvNV_set(&PL_sv_yes, 1); | |
10914 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); | |
10915 | ||
10916 | /* create (a non-shared!) shared string table */ | |
10917 | PL_strtab = newHV(); | |
10918 | HvSHAREKEYS_off(PL_strtab); | |
10919 | hv_ksplit(PL_strtab, HvTOTALKEYS(proto_perl->Istrtab)); | |
10920 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); | |
10921 | ||
10922 | PL_compiling = proto_perl->Icompiling; | |
10923 | ||
10924 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
10925 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
10926 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
10927 | ||
10928 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
10929 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
10930 | ||
10931 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); | |
72dc9ed5 | 10932 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_compiling.cop_warnings); |
c28fe1ec | 10933 | if (PL_compiling.cop_hints_hash) { |
cbb1fbea | 10934 | HINTS_REFCNT_LOCK; |
c28fe1ec | 10935 | PL_compiling.cop_hints_hash->refcounted_he_refcnt++; |
cbb1fbea NC |
10936 | HINTS_REFCNT_UNLOCK; |
10937 | } | |
bd81e77b NC |
10938 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
10939 | ||
10940 | /* pseudo environmental stuff */ | |
10941 | PL_origargc = proto_perl->Iorigargc; | |
10942 | PL_origargv = proto_perl->Iorigargv; | |
10943 | ||
10944 | param->stashes = newAV(); /* Setup array of objects to call clone on */ | |
10945 | ||
10946 | /* Set tainting stuff before PerlIO_debug can possibly get called */ | |
10947 | PL_tainting = proto_perl->Itainting; | |
10948 | PL_taint_warn = proto_perl->Itaint_warn; | |
10949 | ||
10950 | #ifdef PERLIO_LAYERS | |
10951 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ | |
10952 | PerlIO_clone(aTHX_ proto_perl, param); | |
10953 | #endif | |
10954 | ||
10955 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
10956 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
10957 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
10958 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); | |
10959 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); | |
10960 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
10961 | ||
10962 | /* switches */ | |
10963 | PL_minus_c = proto_perl->Iminus_c; | |
10964 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); | |
10965 | PL_localpatches = proto_perl->Ilocalpatches; | |
10966 | PL_splitstr = proto_perl->Isplitstr; | |
10967 | PL_preprocess = proto_perl->Ipreprocess; | |
10968 | PL_minus_n = proto_perl->Iminus_n; | |
10969 | PL_minus_p = proto_perl->Iminus_p; | |
10970 | PL_minus_l = proto_perl->Iminus_l; | |
10971 | PL_minus_a = proto_perl->Iminus_a; | |
bc9b29db | 10972 | PL_minus_E = proto_perl->Iminus_E; |
bd81e77b NC |
10973 | PL_minus_F = proto_perl->Iminus_F; |
10974 | PL_doswitches = proto_perl->Idoswitches; | |
10975 | PL_dowarn = proto_perl->Idowarn; | |
10976 | PL_doextract = proto_perl->Idoextract; | |
10977 | PL_sawampersand = proto_perl->Isawampersand; | |
10978 | PL_unsafe = proto_perl->Iunsafe; | |
10979 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
10980 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); | |
10981 | PL_perldb = proto_perl->Iperldb; | |
10982 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
10983 | PL_exit_flags = proto_perl->Iexit_flags; | |
10984 | ||
10985 | /* magical thingies */ | |
10986 | /* XXX time(&PL_basetime) when asked for? */ | |
10987 | PL_basetime = proto_perl->Ibasetime; | |
10988 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); | |
10989 | ||
10990 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
bd81e77b NC |
10991 | PL_statusvalue = proto_perl->Istatusvalue; |
10992 | #ifdef VMS | |
10993 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
10994 | #else | |
10995 | PL_statusvalue_posix = proto_perl->Istatusvalue_posix; | |
10996 | #endif | |
10997 | PL_encoding = sv_dup(proto_perl->Iencoding, param); | |
10998 | ||
10999 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ | |
11000 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ | |
11001 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
11002 | ||
84da74a7 | 11003 | |
f9f4320a | 11004 | /* RE engine related */ |
84da74a7 YO |
11005 | Zero(&PL_reg_state, 1, struct re_save_state); |
11006 | PL_reginterp_cnt = 0; | |
11007 | PL_regmatch_slab = NULL; | |
11008 | ||
bd81e77b NC |
11009 | /* Clone the regex array */ |
11010 | PL_regex_padav = newAV(); | |
11011 | { | |
11012 | const I32 len = av_len((AV*)proto_perl->Iregex_padav); | |
7a5b473e | 11013 | SV* const * const regexen = AvARRAY((AV*)proto_perl->Iregex_padav); |
bd81e77b | 11014 | IV i; |
7f466ec7 | 11015 | av_push(PL_regex_padav, sv_dup_inc_NN(regexen[0],param)); |
bd81e77b | 11016 | for(i = 1; i <= len; i++) { |
7a5b473e AL |
11017 | const SV * const regex = regexen[i]; |
11018 | SV * const sv = | |
11019 | SvREPADTMP(regex) | |
11020 | ? sv_dup_inc(regex, param) | |
11021 | : SvREFCNT_inc( | |
f8149455 | 11022 | newSViv(PTR2IV(CALLREGDUPE( |
7a5b473e AL |
11023 | INT2PTR(REGEXP *, SvIVX(regex)), param)))) |
11024 | ; | |
60790534 DM |
11025 | if (SvFLAGS(regex) & SVf_BREAK) |
11026 | SvFLAGS(sv) |= SVf_BREAK; /* unrefcnted PL_curpm */ | |
7a5b473e | 11027 | av_push(PL_regex_padav, sv); |
bd81e77b NC |
11028 | } |
11029 | } | |
11030 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
11031 | ||
11032 | /* shortcuts to various I/O objects */ | |
11033 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); | |
11034 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11035 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11036 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11037 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11038 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 | 11039 | |
bd81e77b NC |
11040 | /* shortcuts to regexp stuff */ |
11041 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); | |
9660f481 | 11042 | |
bd81e77b NC |
11043 | /* shortcuts to misc objects */ |
11044 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); | |
9660f481 | 11045 | |
bd81e77b NC |
11046 | /* shortcuts to debugging objects */ |
11047 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); | |
11048 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11049 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11050 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11051 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11052 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
11053 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); | |
11054 | PL_lineary = av_dup(proto_perl->Ilineary, param); | |
11055 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
9660f481 | 11056 | |
bd81e77b NC |
11057 | /* symbol tables */ |
11058 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); | |
11059 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
11060 | PL_debstash = hv_dup(proto_perl->Idebstash, param); | |
11061 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11062 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11063 | ||
11064 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
11065 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); | |
11066 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); | |
3c10abe3 AG |
11067 | PL_unitcheckav = av_dup_inc(proto_perl->Iunitcheckav, param); |
11068 | PL_unitcheckav_save = av_dup_inc(proto_perl->Iunitcheckav_save, param); | |
bd81e77b NC |
11069 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11070 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11071 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
11072 | ||
11073 | PL_sub_generation = proto_perl->Isub_generation; | |
11074 | ||
11075 | /* funky return mechanisms */ | |
11076 | PL_forkprocess = proto_perl->Iforkprocess; | |
11077 | ||
11078 | /* subprocess state */ | |
11079 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); | |
11080 | ||
11081 | /* internal state */ | |
11082 | PL_maxo = proto_perl->Imaxo; | |
11083 | if (proto_perl->Iop_mask) | |
11084 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11085 | else | |
bd61b366 | 11086 | PL_op_mask = NULL; |
bd81e77b NC |
11087 | /* PL_asserting = proto_perl->Iasserting; */ |
11088 | ||
11089 | /* current interpreter roots */ | |
11090 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); | |
d3c72c2a | 11091 | OP_REFCNT_LOCK; |
bd81e77b | 11092 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
d3c72c2a | 11093 | OP_REFCNT_UNLOCK; |
bd81e77b NC |
11094 | PL_main_start = proto_perl->Imain_start; |
11095 | PL_eval_root = proto_perl->Ieval_root; | |
11096 | PL_eval_start = proto_perl->Ieval_start; | |
11097 | ||
11098 | /* runtime control stuff */ | |
11099 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11100 | PL_copline = proto_perl->Icopline; | |
11101 | ||
11102 | PL_filemode = proto_perl->Ifilemode; | |
11103 | PL_lastfd = proto_perl->Ilastfd; | |
11104 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11105 | PL_Argv = NULL; | |
bd61b366 | 11106 | PL_Cmd = NULL; |
bd81e77b | 11107 | PL_gensym = proto_perl->Igensym; |
bd81e77b NC |
11108 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
11109 | PL_laststatval = proto_perl->Ilaststatval; | |
11110 | PL_laststype = proto_perl->Ilaststype; | |
a0714e2c | 11111 | PL_mess_sv = NULL; |
bd81e77b NC |
11112 | |
11113 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); | |
11114 | ||
11115 | /* interpreter atexit processing */ | |
11116 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11117 | if (PL_exitlistlen) { | |
11118 | Newx(PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11119 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
9660f481 | 11120 | } |
bd81e77b NC |
11121 | else |
11122 | PL_exitlist = (PerlExitListEntry*)NULL; | |
f16dd614 DM |
11123 | |
11124 | PL_my_cxt_size = proto_perl->Imy_cxt_size; | |
4c901e72 | 11125 | if (PL_my_cxt_size) { |
f16dd614 DM |
11126 | Newx(PL_my_cxt_list, PL_my_cxt_size, void *); |
11127 | Copy(proto_perl->Imy_cxt_list, PL_my_cxt_list, PL_my_cxt_size, void *); | |
53d44271 JH |
11128 | #ifdef PERL_GLOBAL_STRUCT_PRIVATE |
11129 | Newx(PL_my_cxt_keys, PL_my_cxt_size, char *); | |
11130 | Copy(proto_perl->Imy_cxt_keys, PL_my_cxt_keys, PL_my_cxt_size, char *); | |
11131 | #endif | |
f16dd614 | 11132 | } |
53d44271 | 11133 | else { |
f16dd614 | 11134 | PL_my_cxt_list = (void**)NULL; |
53d44271 JH |
11135 | #ifdef PERL_GLOBAL_STRUCT_PRIVATE |
11136 | PL_my_cxt_keys = (void**)NULL; | |
11137 | #endif | |
11138 | } | |
bd81e77b NC |
11139 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
11140 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); | |
11141 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
11142 | ||
11143 | PL_profiledata = NULL; | |
11144 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); | |
11145 | /* PL_rsfp_filters entries have fake IoDIRP() */ | |
11146 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); | |
9660f481 | 11147 | |
bd81e77b | 11148 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
9660f481 | 11149 | |
bd81e77b | 11150 | PAD_CLONE_VARS(proto_perl, param); |
9660f481 | 11151 | |
bd81e77b NC |
11152 | #ifdef HAVE_INTERP_INTERN |
11153 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11154 | #endif | |
645c22ef | 11155 | |
bd81e77b NC |
11156 | /* more statics moved here */ |
11157 | PL_generation = proto_perl->Igeneration; | |
11158 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); | |
645c22ef | 11159 | |
bd81e77b NC |
11160 | PL_in_clean_objs = proto_perl->Iin_clean_objs; |
11161 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
6a78b4db | 11162 | |
bd81e77b NC |
11163 | PL_uid = proto_perl->Iuid; |
11164 | PL_euid = proto_perl->Ieuid; | |
11165 | PL_gid = proto_perl->Igid; | |
11166 | PL_egid = proto_perl->Iegid; | |
11167 | PL_nomemok = proto_perl->Inomemok; | |
11168 | PL_an = proto_perl->Ian; | |
11169 | PL_evalseq = proto_perl->Ievalseq; | |
11170 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11171 | PL_origalen = proto_perl->Iorigalen; | |
11172 | #ifdef PERL_USES_PL_PIDSTATUS | |
11173 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
11174 | #endif | |
11175 | PL_osname = SAVEPV(proto_perl->Iosname); | |
11176 | PL_sighandlerp = proto_perl->Isighandlerp; | |
6a78b4db | 11177 | |
bd81e77b | 11178 | PL_runops = proto_perl->Irunops; |
6a78b4db | 11179 | |
bd81e77b | 11180 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); |
6a78b4db | 11181 | |
bd81e77b NC |
11182 | #ifdef CSH |
11183 | PL_cshlen = proto_perl->Icshlen; | |
11184 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ | |
11185 | #endif | |
645c22ef | 11186 | |
199e78b7 DM |
11187 | PL_parser = parser_dup(proto_perl->Iparser, param); |
11188 | ||
bd81e77b | 11189 | PL_lex_state = proto_perl->Ilex_state; |
645c22ef | 11190 | |
5db06880 NC |
11191 | #ifdef PERL_MAD |
11192 | Copy(proto_perl->Inexttoke, PL_nexttoke, 5, NEXTTOKE); | |
5336380d | 11193 | PL_curforce = proto_perl->Icurforce; |
5db06880 | 11194 | #else |
bd81e77b NC |
11195 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); |
11196 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
11197 | PL_nexttoke = proto_perl->Inexttoke; | |
5db06880 | 11198 | #endif |
c43294b8 | 11199 | |
db4997f0 NC |
11200 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); |
11201 | i = proto_perl->Ibufptr - SvPVX_const(proto_perl->Ilinestr); | |
11202 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11203 | i = proto_perl->Ioldbufptr - SvPVX_const(proto_perl->Ilinestr); | |
11204 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11205 | i = proto_perl->Ioldoldbufptr - SvPVX_const(proto_perl->Ilinestr); | |
11206 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11207 | i = proto_perl->Ilinestart - SvPVX_const(proto_perl->Ilinestr); | |
11208 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
bd81e77b | 11209 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
bd81e77b NC |
11210 | |
11211 | PL_expect = proto_perl->Iexpect; | |
11212 | ||
bd81e77b | 11213 | PL_multi_end = proto_perl->Imulti_end; |
bd81e77b NC |
11214 | |
11215 | PL_error_count = proto_perl->Ierror_count; | |
11216 | PL_subline = proto_perl->Isubline; | |
11217 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); | |
c43294b8 | 11218 | |
db4997f0 NC |
11219 | i = proto_perl->Ilast_uni - SvPVX_const(proto_perl->Ilinestr); |
11220 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11221 | i = proto_perl->Ilast_lop - SvPVX_const(proto_perl->Ilinestr); | |
11222 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); | |
11223 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
bd81e77b NC |
11224 | PL_in_my = proto_perl->Iin_my; |
11225 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); | |
11226 | #ifdef FCRYPT | |
11227 | PL_cryptseen = proto_perl->Icryptseen; | |
11228 | #endif | |
1d7c1841 | 11229 | |
bd81e77b | 11230 | PL_hints = proto_perl->Ihints; |
1d7c1841 | 11231 | |
bd81e77b | 11232 | PL_amagic_generation = proto_perl->Iamagic_generation; |
d2d73c3e | 11233 | |
bd81e77b NC |
11234 | #ifdef USE_LOCALE_COLLATE |
11235 | PL_collation_ix = proto_perl->Icollation_ix; | |
11236 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
11237 | PL_collation_standard = proto_perl->Icollation_standard; | |
11238 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
11239 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
11240 | #endif /* USE_LOCALE_COLLATE */ | |
1d7c1841 | 11241 | |
bd81e77b NC |
11242 | #ifdef USE_LOCALE_NUMERIC |
11243 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
11244 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
11245 | PL_numeric_local = proto_perl->Inumeric_local; | |
11246 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); | |
11247 | #endif /* !USE_LOCALE_NUMERIC */ | |
1d7c1841 | 11248 | |
bd81e77b NC |
11249 | /* utf8 character classes */ |
11250 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); | |
11251 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
11252 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
11253 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
11254 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
11255 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
11256 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
11257 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
11258 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
11259 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
11260 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
11261 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
11262 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
11263 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
11264 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
11265 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
11266 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
11267 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); | |
11268 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); | |
11269 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 11270 | |
bd81e77b NC |
11271 | /* Did the locale setup indicate UTF-8? */ |
11272 | PL_utf8locale = proto_perl->Iutf8locale; | |
11273 | /* Unicode features (see perlrun/-C) */ | |
11274 | PL_unicode = proto_perl->Iunicode; | |
1d7c1841 | 11275 | |
bd81e77b NC |
11276 | /* Pre-5.8 signals control */ |
11277 | PL_signals = proto_perl->Isignals; | |
1d7c1841 | 11278 | |
bd81e77b NC |
11279 | /* times() ticks per second */ |
11280 | PL_clocktick = proto_perl->Iclocktick; | |
1d7c1841 | 11281 | |
bd81e77b NC |
11282 | /* Recursion stopper for PerlIO_find_layer */ |
11283 | PL_in_load_module = proto_perl->Iin_load_module; | |
8df990a8 | 11284 | |
bd81e77b NC |
11285 | /* sort() routine */ |
11286 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
e5dd39fc | 11287 | |
bd81e77b NC |
11288 | /* Not really needed/useful since the reenrant_retint is "volatile", |
11289 | * but do it for consistency's sake. */ | |
11290 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
1d7c1841 | 11291 | |
bd81e77b NC |
11292 | /* Hooks to shared SVs and locks. */ |
11293 | PL_sharehook = proto_perl->Isharehook; | |
11294 | PL_lockhook = proto_perl->Ilockhook; | |
11295 | PL_unlockhook = proto_perl->Iunlockhook; | |
11296 | PL_threadhook = proto_perl->Ithreadhook; | |
1d7c1841 | 11297 | |
bd81e77b NC |
11298 | PL_runops_std = proto_perl->Irunops_std; |
11299 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
1d7c1841 | 11300 | |
bd81e77b NC |
11301 | #ifdef THREADS_HAVE_PIDS |
11302 | PL_ppid = proto_perl->Ippid; | |
11303 | #endif | |
1d7c1841 | 11304 | |
bd81e77b | 11305 | /* swatch cache */ |
5c284bb0 | 11306 | PL_last_swash_hv = NULL; /* reinits on demand */ |
bd81e77b NC |
11307 | PL_last_swash_klen = 0; |
11308 | PL_last_swash_key[0]= '\0'; | |
11309 | PL_last_swash_tmps = (U8*)NULL; | |
11310 | PL_last_swash_slen = 0; | |
1d7c1841 | 11311 | |
bd81e77b NC |
11312 | PL_glob_index = proto_perl->Iglob_index; |
11313 | PL_srand_called = proto_perl->Isrand_called; | |
11b79775 | 11314 | PL_uudmap[(U32) 'M'] = 0; /* reinits on demand */ |
bd61b366 | 11315 | PL_bitcount = NULL; /* reinits on demand */ |
05ec9bb3 | 11316 | |
bd81e77b NC |
11317 | if (proto_perl->Ipsig_pend) { |
11318 | Newxz(PL_psig_pend, SIG_SIZE, int); | |
11319 | } | |
11320 | else { | |
11321 | PL_psig_pend = (int*)NULL; | |
11322 | } | |
05ec9bb3 | 11323 | |
bd81e77b NC |
11324 | if (proto_perl->Ipsig_ptr) { |
11325 | Newxz(PL_psig_ptr, SIG_SIZE, SV*); | |
11326 | Newxz(PL_psig_name, SIG_SIZE, SV*); | |
11327 | for (i = 1; i < SIG_SIZE; i++) { | |
11328 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); | |
11329 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
11330 | } | |
11331 | } | |
11332 | else { | |
11333 | PL_psig_ptr = (SV**)NULL; | |
11334 | PL_psig_name = (SV**)NULL; | |
11335 | } | |
05ec9bb3 | 11336 | |
bd81e77b | 11337 | /* thrdvar.h stuff */ |
1d7c1841 | 11338 | |
bd81e77b NC |
11339 | if (flags & CLONEf_COPY_STACKS) { |
11340 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ | |
11341 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
11342 | PL_tmps_max = proto_perl->Ttmps_max; | |
11343 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
11344 | Newxz(PL_tmps_stack, PL_tmps_max, SV*); | |
11345 | i = 0; | |
11346 | while (i <= PL_tmps_ix) { | |
11347 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); | |
11348 | ++i; | |
11349 | } | |
d2d73c3e | 11350 | |
bd81e77b NC |
11351 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ |
11352 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
11353 | Newxz(PL_markstack, i, I32); | |
11354 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
11355 | - proto_perl->Tmarkstack); | |
11356 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
11357 | - proto_perl->Tmarkstack); | |
11358 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
11359 | PL_markstack_ptr - PL_markstack + 1, I32); | |
d2d73c3e | 11360 | |
bd81e77b NC |
11361 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] |
11362 | * NOTE: unlike the others! */ | |
11363 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
11364 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
11365 | Newxz(PL_scopestack, PL_scopestack_max, I32); | |
11366 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
d419787a | 11367 | |
bd81e77b NC |
11368 | /* NOTE: si_dup() looks at PL_markstack */ |
11369 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); | |
d2d73c3e | 11370 | |
bd81e77b NC |
11371 | /* PL_curstack = PL_curstackinfo->si_stack; */ |
11372 | PL_curstack = av_dup(proto_perl->Tcurstack, param); | |
11373 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 | 11374 | |
bd81e77b NC |
11375 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ |
11376 | PL_stack_base = AvARRAY(PL_curstack); | |
11377 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
11378 | - proto_perl->Tstack_base); | |
11379 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
1d7c1841 | 11380 | |
bd81e77b NC |
11381 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] |
11382 | * NOTE: unlike the others! */ | |
11383 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
11384 | PL_savestack_max = proto_perl->Tsavestack_max; | |
11385 | /*Newxz(PL_savestack, PL_savestack_max, ANY);*/ | |
11386 | PL_savestack = ss_dup(proto_perl, param); | |
11387 | } | |
11388 | else { | |
11389 | init_stacks(); | |
11390 | ENTER; /* perl_destruct() wants to LEAVE; */ | |
34394ecd DM |
11391 | |
11392 | /* although we're not duplicating the tmps stack, we should still | |
11393 | * add entries for any SVs on the tmps stack that got cloned by a | |
11394 | * non-refcount means (eg a temp in @_); otherwise they will be | |
11395 | * orphaned | |
11396 | */ | |
11397 | for (i = 0; i<= proto_perl->Ttmps_ix; i++) { | |
6136c704 | 11398 | SV * const nsv = (SV*)ptr_table_fetch(PL_ptr_table, |
34394ecd DM |
11399 | proto_perl->Ttmps_stack[i]); |
11400 | if (nsv && !SvREFCNT(nsv)) { | |
11401 | EXTEND_MORTAL(1); | |
b37c2d43 | 11402 | PL_tmps_stack[++PL_tmps_ix] = SvREFCNT_inc_simple(nsv); |
34394ecd DM |
11403 | } |
11404 | } | |
bd81e77b | 11405 | } |
1d7c1841 | 11406 | |
bd81e77b NC |
11407 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ |
11408 | PL_top_env = &PL_start_env; | |
1d7c1841 | 11409 | |
bd81e77b | 11410 | PL_op = proto_perl->Top; |
4a4c6fe3 | 11411 | |
a0714e2c | 11412 | PL_Sv = NULL; |
bd81e77b NC |
11413 | PL_Xpv = (XPV*)NULL; |
11414 | PL_na = proto_perl->Tna; | |
1fcf4c12 | 11415 | |
bd81e77b NC |
11416 | PL_statbuf = proto_perl->Tstatbuf; |
11417 | PL_statcache = proto_perl->Tstatcache; | |
11418 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); | |
11419 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
11420 | #ifdef HAS_TIMES | |
11421 | PL_timesbuf = proto_perl->Ttimesbuf; | |
11422 | #endif | |
1d7c1841 | 11423 | |
bd81e77b NC |
11424 | PL_tainted = proto_perl->Ttainted; |
11425 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
11426 | PL_rs = sv_dup_inc(proto_perl->Trs, param); | |
11427 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
11428 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
11429 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
11430 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ | |
11431 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); | |
11432 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
11433 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 | 11434 | |
bd81e77b NC |
11435 | PL_restartop = proto_perl->Trestartop; |
11436 | PL_in_eval = proto_perl->Tin_eval; | |
11437 | PL_delaymagic = proto_perl->Tdelaymagic; | |
11438 | PL_dirty = proto_perl->Tdirty; | |
11439 | PL_localizing = proto_perl->Tlocalizing; | |
1d7c1841 | 11440 | |
bd81e77b | 11441 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
4608196e | 11442 | PL_hv_fetch_ent_mh = NULL; |
bd81e77b | 11443 | PL_modcount = proto_perl->Tmodcount; |
5f66b61c | 11444 | PL_lastgotoprobe = NULL; |
bd81e77b | 11445 | PL_dumpindent = proto_perl->Tdumpindent; |
1d7c1841 | 11446 | |
bd81e77b NC |
11447 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); |
11448 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); | |
11449 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
11450 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
bd61b366 | 11451 | PL_efloatbuf = NULL; /* reinits on demand */ |
bd81e77b | 11452 | PL_efloatsize = 0; /* reinits on demand */ |
d2d73c3e | 11453 | |
bd81e77b | 11454 | /* regex stuff */ |
1d7c1841 | 11455 | |
bd81e77b NC |
11456 | PL_screamfirst = NULL; |
11457 | PL_screamnext = NULL; | |
11458 | PL_maxscream = -1; /* reinits on demand */ | |
a0714e2c | 11459 | PL_lastscream = NULL; |
1d7c1841 | 11460 | |
bd81e77b | 11461 | PL_watchaddr = NULL; |
bd61b366 | 11462 | PL_watchok = NULL; |
1d7c1841 | 11463 | |
bd81e77b | 11464 | PL_regdummy = proto_perl->Tregdummy; |
bd81e77b NC |
11465 | PL_colorset = 0; /* reinits PL_colors[] */ |
11466 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 | 11467 | |
84da74a7 | 11468 | |
1d7c1841 | 11469 | |
bd81e77b NC |
11470 | /* Pluggable optimizer */ |
11471 | PL_peepp = proto_perl->Tpeepp; | |
1d7c1841 | 11472 | |
bd81e77b | 11473 | PL_stashcache = newHV(); |
1d7c1841 | 11474 | |
bd81e77b NC |
11475 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
11476 | ptr_table_free(PL_ptr_table); | |
11477 | PL_ptr_table = NULL; | |
11478 | } | |
1d7c1841 | 11479 | |
bd81e77b NC |
11480 | /* Call the ->CLONE method, if it exists, for each of the stashes |
11481 | identified by sv_dup() above. | |
11482 | */ | |
11483 | while(av_len(param->stashes) != -1) { | |
11484 | HV* const stash = (HV*) av_shift(param->stashes); | |
11485 | GV* const cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); | |
11486 | if (cloner && GvCV(cloner)) { | |
11487 | dSP; | |
11488 | ENTER; | |
11489 | SAVETMPS; | |
11490 | PUSHMARK(SP); | |
11491 | XPUSHs(sv_2mortal(newSVhek(HvNAME_HEK(stash)))); | |
11492 | PUTBACK; | |
11493 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
11494 | FREETMPS; | |
11495 | LEAVE; | |
11496 | } | |
1d7c1841 | 11497 | } |
1d7c1841 | 11498 | |
bd81e77b | 11499 | SvREFCNT_dec(param->stashes); |
1d7c1841 | 11500 | |
bd81e77b NC |
11501 | /* orphaned? eg threads->new inside BEGIN or use */ |
11502 | if (PL_compcv && ! SvREFCNT(PL_compcv)) { | |
b37c2d43 | 11503 | SvREFCNT_inc_simple_void(PL_compcv); |
bd81e77b NC |
11504 | SAVEFREESV(PL_compcv); |
11505 | } | |
dd2155a4 | 11506 | |
bd81e77b NC |
11507 | return my_perl; |
11508 | } | |
1d7c1841 | 11509 | |
bd81e77b | 11510 | #endif /* USE_ITHREADS */ |
1d7c1841 | 11511 | |
bd81e77b NC |
11512 | /* |
11513 | =head1 Unicode Support | |
1d7c1841 | 11514 | |
bd81e77b | 11515 | =for apidoc sv_recode_to_utf8 |
1d7c1841 | 11516 | |
bd81e77b NC |
11517 | The encoding is assumed to be an Encode object, on entry the PV |
11518 | of the sv is assumed to be octets in that encoding, and the sv | |
11519 | will be converted into Unicode (and UTF-8). | |
1d7c1841 | 11520 | |
bd81e77b NC |
11521 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
11522 | is not a reference, nothing is done to the sv. If the encoding is not | |
11523 | an C<Encode::XS> Encoding object, bad things will happen. | |
11524 | (See F<lib/encoding.pm> and L<Encode>). | |
1d7c1841 | 11525 | |
bd81e77b | 11526 | The PV of the sv is returned. |
1d7c1841 | 11527 | |
bd81e77b | 11528 | =cut */ |
1d7c1841 | 11529 | |
bd81e77b NC |
11530 | char * |
11531 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
11532 | { | |
11533 | dVAR; | |
11534 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { | |
11535 | SV *uni; | |
11536 | STRLEN len; | |
11537 | const char *s; | |
11538 | dSP; | |
11539 | ENTER; | |
11540 | SAVETMPS; | |
11541 | save_re_context(); | |
11542 | PUSHMARK(sp); | |
11543 | EXTEND(SP, 3); | |
11544 | XPUSHs(encoding); | |
11545 | XPUSHs(sv); | |
11546 | /* | |
11547 | NI-S 2002/07/09 | |
11548 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
11549 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means | |
11550 | remove converted chars from source. | |
1d7c1841 | 11551 | |
bd81e77b | 11552 | Both will default the value - let them. |
1d7c1841 | 11553 | |
bd81e77b NC |
11554 | XPUSHs(&PL_sv_yes); |
11555 | */ | |
11556 | PUTBACK; | |
11557 | call_method("decode", G_SCALAR); | |
11558 | SPAGAIN; | |
11559 | uni = POPs; | |
11560 | PUTBACK; | |
11561 | s = SvPV_const(uni, len); | |
11562 | if (s != SvPVX_const(sv)) { | |
11563 | SvGROW(sv, len + 1); | |
11564 | Move(s, SvPVX(sv), len + 1, char); | |
11565 | SvCUR_set(sv, len); | |
11566 | } | |
11567 | FREETMPS; | |
11568 | LEAVE; | |
11569 | SvUTF8_on(sv); | |
11570 | return SvPVX(sv); | |
389edf32 | 11571 | } |
bd81e77b NC |
11572 | return SvPOKp(sv) ? SvPVX(sv) : NULL; |
11573 | } | |
1d7c1841 | 11574 | |
bd81e77b NC |
11575 | /* |
11576 | =for apidoc sv_cat_decode | |
1d7c1841 | 11577 | |
bd81e77b NC |
11578 | The encoding is assumed to be an Encode object, the PV of the ssv is |
11579 | assumed to be octets in that encoding and decoding the input starts | |
11580 | from the position which (PV + *offset) pointed to. The dsv will be | |
11581 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
11582 | when the string tstr appears in decoding output or the input ends on | |
11583 | the PV of the ssv. The value which the offset points will be modified | |
11584 | to the last input position on the ssv. | |
1d7c1841 | 11585 | |
bd81e77b | 11586 | Returns TRUE if the terminator was found, else returns FALSE. |
1d7c1841 | 11587 | |
bd81e77b NC |
11588 | =cut */ |
11589 | ||
11590 | bool | |
11591 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
11592 | SV *ssv, int *offset, char *tstr, int tlen) | |
11593 | { | |
11594 | dVAR; | |
11595 | bool ret = FALSE; | |
11596 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { | |
11597 | SV *offsv; | |
11598 | dSP; | |
11599 | ENTER; | |
11600 | SAVETMPS; | |
11601 | save_re_context(); | |
11602 | PUSHMARK(sp); | |
11603 | EXTEND(SP, 6); | |
11604 | XPUSHs(encoding); | |
11605 | XPUSHs(dsv); | |
11606 | XPUSHs(ssv); | |
11607 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
11608 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
11609 | PUTBACK; | |
11610 | call_method("cat_decode", G_SCALAR); | |
11611 | SPAGAIN; | |
11612 | ret = SvTRUE(TOPs); | |
11613 | *offset = SvIV(offsv); | |
11614 | PUTBACK; | |
11615 | FREETMPS; | |
11616 | LEAVE; | |
389edf32 | 11617 | } |
bd81e77b NC |
11618 | else |
11619 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
11620 | return ret; | |
1d7c1841 | 11621 | |
bd81e77b | 11622 | } |
1d7c1841 | 11623 | |
bd81e77b NC |
11624 | /* --------------------------------------------------------------------- |
11625 | * | |
11626 | * support functions for report_uninit() | |
11627 | */ | |
1d7c1841 | 11628 | |
bd81e77b NC |
11629 | /* the maxiumum size of array or hash where we will scan looking |
11630 | * for the undefined element that triggered the warning */ | |
1d7c1841 | 11631 | |
bd81e77b | 11632 | #define FUV_MAX_SEARCH_SIZE 1000 |
1d7c1841 | 11633 | |
bd81e77b NC |
11634 | /* Look for an entry in the hash whose value has the same SV as val; |
11635 | * If so, return a mortal copy of the key. */ | |
1d7c1841 | 11636 | |
bd81e77b NC |
11637 | STATIC SV* |
11638 | S_find_hash_subscript(pTHX_ HV *hv, SV* val) | |
11639 | { | |
11640 | dVAR; | |
11641 | register HE **array; | |
11642 | I32 i; | |
6c3182a5 | 11643 | |
bd81e77b NC |
11644 | if (!hv || SvMAGICAL(hv) || !HvARRAY(hv) || |
11645 | (HvTOTALKEYS(hv) > FUV_MAX_SEARCH_SIZE)) | |
a0714e2c | 11646 | return NULL; |
6c3182a5 | 11647 | |
bd81e77b | 11648 | array = HvARRAY(hv); |
6c3182a5 | 11649 | |
bd81e77b NC |
11650 | for (i=HvMAX(hv); i>0; i--) { |
11651 | register HE *entry; | |
11652 | for (entry = array[i]; entry; entry = HeNEXT(entry)) { | |
11653 | if (HeVAL(entry) != val) | |
11654 | continue; | |
11655 | if ( HeVAL(entry) == &PL_sv_undef || | |
11656 | HeVAL(entry) == &PL_sv_placeholder) | |
11657 | continue; | |
11658 | if (!HeKEY(entry)) | |
a0714e2c | 11659 | return NULL; |
bd81e77b NC |
11660 | if (HeKLEN(entry) == HEf_SVKEY) |
11661 | return sv_mortalcopy(HeKEY_sv(entry)); | |
11662 | return sv_2mortal(newSVpvn(HeKEY(entry), HeKLEN(entry))); | |
11663 | } | |
11664 | } | |
a0714e2c | 11665 | return NULL; |
bd81e77b | 11666 | } |
6c3182a5 | 11667 | |
bd81e77b NC |
11668 | /* Look for an entry in the array whose value has the same SV as val; |
11669 | * If so, return the index, otherwise return -1. */ | |
6c3182a5 | 11670 | |
bd81e77b NC |
11671 | STATIC I32 |
11672 | S_find_array_subscript(pTHX_ AV *av, SV* val) | |
11673 | { | |
97aff369 | 11674 | dVAR; |
bd81e77b NC |
11675 | if (!av || SvMAGICAL(av) || !AvARRAY(av) || |
11676 | (AvFILLp(av) > FUV_MAX_SEARCH_SIZE)) | |
11677 | return -1; | |
57c6e6d2 | 11678 | |
4a021917 AL |
11679 | if (val != &PL_sv_undef) { |
11680 | SV ** const svp = AvARRAY(av); | |
11681 | I32 i; | |
11682 | ||
11683 | for (i=AvFILLp(av); i>=0; i--) | |
11684 | if (svp[i] == val) | |
11685 | return i; | |
bd81e77b NC |
11686 | } |
11687 | return -1; | |
11688 | } | |
15a5279a | 11689 | |
bd81e77b NC |
11690 | /* S_varname(): return the name of a variable, optionally with a subscript. |
11691 | * If gv is non-zero, use the name of that global, along with gvtype (one | |
11692 | * of "$", "@", "%"); otherwise use the name of the lexical at pad offset | |
11693 | * targ. Depending on the value of the subscript_type flag, return: | |
11694 | */ | |
bce260cd | 11695 | |
bd81e77b NC |
11696 | #define FUV_SUBSCRIPT_NONE 1 /* "@foo" */ |
11697 | #define FUV_SUBSCRIPT_ARRAY 2 /* "$foo[aindex]" */ | |
11698 | #define FUV_SUBSCRIPT_HASH 3 /* "$foo{keyname}" */ | |
11699 | #define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */ | |
bce260cd | 11700 | |
bd81e77b NC |
11701 | STATIC SV* |
11702 | S_varname(pTHX_ GV *gv, const char gvtype, PADOFFSET targ, | |
11703 | SV* keyname, I32 aindex, int subscript_type) | |
11704 | { | |
1d7c1841 | 11705 | |
bd81e77b NC |
11706 | SV * const name = sv_newmortal(); |
11707 | if (gv) { | |
11708 | char buffer[2]; | |
11709 | buffer[0] = gvtype; | |
11710 | buffer[1] = 0; | |
1d7c1841 | 11711 | |
bd81e77b | 11712 | /* as gv_fullname4(), but add literal '^' for $^FOO names */ |
66fe0623 | 11713 | |
bd81e77b | 11714 | gv_fullname4(name, gv, buffer, 0); |
1d7c1841 | 11715 | |
bd81e77b NC |
11716 | if ((unsigned int)SvPVX(name)[1] <= 26) { |
11717 | buffer[0] = '^'; | |
11718 | buffer[1] = SvPVX(name)[1] + 'A' - 1; | |
1d7c1841 | 11719 | |
bd81e77b NC |
11720 | /* Swap the 1 unprintable control character for the 2 byte pretty |
11721 | version - ie substr($name, 1, 1) = $buffer; */ | |
11722 | sv_insert(name, 1, 1, buffer, 2); | |
1d7c1841 | 11723 | } |
bd81e77b NC |
11724 | } |
11725 | else { | |
11726 | U32 unused; | |
11727 | CV * const cv = find_runcv(&unused); | |
11728 | SV *sv; | |
11729 | AV *av; | |
1d7c1841 | 11730 | |
bd81e77b | 11731 | if (!cv || !CvPADLIST(cv)) |
a0714e2c | 11732 | return NULL; |
bd81e77b NC |
11733 | av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE)); |
11734 | sv = *av_fetch(av, targ, FALSE); | |
f8503592 | 11735 | sv_setpvn(name, SvPV_nolen_const(sv), SvCUR(sv)); |
bd81e77b | 11736 | } |
1d7c1841 | 11737 | |
bd81e77b | 11738 | if (subscript_type == FUV_SUBSCRIPT_HASH) { |
561b68a9 | 11739 | SV * const sv = newSV(0); |
bd81e77b NC |
11740 | *SvPVX(name) = '$'; |
11741 | Perl_sv_catpvf(aTHX_ name, "{%s}", | |
11742 | pv_display(sv,SvPVX_const(keyname), SvCUR(keyname), 0, 32)); | |
11743 | SvREFCNT_dec(sv); | |
11744 | } | |
11745 | else if (subscript_type == FUV_SUBSCRIPT_ARRAY) { | |
11746 | *SvPVX(name) = '$'; | |
11747 | Perl_sv_catpvf(aTHX_ name, "[%"IVdf"]", (IV)aindex); | |
11748 | } | |
11749 | else if (subscript_type == FUV_SUBSCRIPT_WITHIN) | |
89529cee | 11750 | Perl_sv_insert(aTHX_ name, 0, 0, STR_WITH_LEN("within ")); |
1d7c1841 | 11751 | |
bd81e77b NC |
11752 | return name; |
11753 | } | |
1d7c1841 | 11754 | |
1d7c1841 | 11755 | |
bd81e77b NC |
11756 | /* |
11757 | =for apidoc find_uninit_var | |
1d7c1841 | 11758 | |
bd81e77b NC |
11759 | Find the name of the undefined variable (if any) that caused the operator o |
11760 | to issue a "Use of uninitialized value" warning. | |
11761 | If match is true, only return a name if it's value matches uninit_sv. | |
11762 | So roughly speaking, if a unary operator (such as OP_COS) generates a | |
11763 | warning, then following the direct child of the op may yield an | |
11764 | OP_PADSV or OP_GV that gives the name of the undefined variable. On the | |
11765 | other hand, with OP_ADD there are two branches to follow, so we only print | |
11766 | the variable name if we get an exact match. | |
1d7c1841 | 11767 | |
bd81e77b | 11768 | The name is returned as a mortal SV. |
1d7c1841 | 11769 | |
bd81e77b NC |
11770 | Assumes that PL_op is the op that originally triggered the error, and that |
11771 | PL_comppad/PL_curpad points to the currently executing pad. | |
1d7c1841 | 11772 | |
bd81e77b NC |
11773 | =cut |
11774 | */ | |
1d7c1841 | 11775 | |
bd81e77b NC |
11776 | STATIC SV * |
11777 | S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match) | |
11778 | { | |
11779 | dVAR; | |
11780 | SV *sv; | |
11781 | AV *av; | |
11782 | GV *gv; | |
11783 | OP *o, *o2, *kid; | |
1d7c1841 | 11784 | |
bd81e77b NC |
11785 | if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef || |
11786 | uninit_sv == &PL_sv_placeholder))) | |
a0714e2c | 11787 | return NULL; |
1d7c1841 | 11788 | |
bd81e77b | 11789 | switch (obase->op_type) { |
1d7c1841 | 11790 | |
bd81e77b NC |
11791 | case OP_RV2AV: |
11792 | case OP_RV2HV: | |
11793 | case OP_PADAV: | |
11794 | case OP_PADHV: | |
11795 | { | |
11796 | const bool pad = (obase->op_type == OP_PADAV || obase->op_type == OP_PADHV); | |
11797 | const bool hash = (obase->op_type == OP_PADHV || obase->op_type == OP_RV2HV); | |
11798 | I32 index = 0; | |
a0714e2c | 11799 | SV *keysv = NULL; |
bd81e77b | 11800 | int subscript_type = FUV_SUBSCRIPT_WITHIN; |
1d7c1841 | 11801 | |
bd81e77b NC |
11802 | if (pad) { /* @lex, %lex */ |
11803 | sv = PAD_SVl(obase->op_targ); | |
a0714e2c | 11804 | gv = NULL; |
bd81e77b NC |
11805 | } |
11806 | else { | |
11807 | if (cUNOPx(obase)->op_first->op_type == OP_GV) { | |
11808 | /* @global, %global */ | |
11809 | gv = cGVOPx_gv(cUNOPx(obase)->op_first); | |
11810 | if (!gv) | |
11811 | break; | |
11812 | sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv); | |
11813 | } | |
11814 | else /* @{expr}, %{expr} */ | |
11815 | return find_uninit_var(cUNOPx(obase)->op_first, | |
11816 | uninit_sv, match); | |
11817 | } | |
1d7c1841 | 11818 | |
bd81e77b NC |
11819 | /* attempt to find a match within the aggregate */ |
11820 | if (hash) { | |
d4c19fe8 | 11821 | keysv = find_hash_subscript((HV*)sv, uninit_sv); |
bd81e77b NC |
11822 | if (keysv) |
11823 | subscript_type = FUV_SUBSCRIPT_HASH; | |
11824 | } | |
11825 | else { | |
e15d5972 | 11826 | index = find_array_subscript((AV*)sv, uninit_sv); |
bd81e77b NC |
11827 | if (index >= 0) |
11828 | subscript_type = FUV_SUBSCRIPT_ARRAY; | |
11829 | } | |
1d7c1841 | 11830 | |
bd81e77b NC |
11831 | if (match && subscript_type == FUV_SUBSCRIPT_WITHIN) |
11832 | break; | |
1d7c1841 | 11833 | |
bd81e77b NC |
11834 | return varname(gv, hash ? '%' : '@', obase->op_targ, |
11835 | keysv, index, subscript_type); | |
11836 | } | |
1d7c1841 | 11837 | |
bd81e77b NC |
11838 | case OP_PADSV: |
11839 | if (match && PAD_SVl(obase->op_targ) != uninit_sv) | |
11840 | break; | |
a0714e2c SS |
11841 | return varname(NULL, '$', obase->op_targ, |
11842 | NULL, 0, FUV_SUBSCRIPT_NONE); | |
1d7c1841 | 11843 | |
bd81e77b NC |
11844 | case OP_GVSV: |
11845 | gv = cGVOPx_gv(obase); | |
11846 | if (!gv || (match && GvSV(gv) != uninit_sv)) | |
11847 | break; | |
a0714e2c | 11848 | return varname(gv, '$', 0, NULL, 0, FUV_SUBSCRIPT_NONE); |
1d7c1841 | 11849 | |
bd81e77b NC |
11850 | case OP_AELEMFAST: |
11851 | if (obase->op_flags & OPf_SPECIAL) { /* lexical array */ | |
11852 | if (match) { | |
11853 | SV **svp; | |
11854 | av = (AV*)PAD_SV(obase->op_targ); | |
11855 | if (!av || SvRMAGICAL(av)) | |
11856 | break; | |
11857 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
11858 | if (!svp || *svp != uninit_sv) | |
11859 | break; | |
11860 | } | |
a0714e2c SS |
11861 | return varname(NULL, '$', obase->op_targ, |
11862 | NULL, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
bd81e77b NC |
11863 | } |
11864 | else { | |
11865 | gv = cGVOPx_gv(obase); | |
11866 | if (!gv) | |
11867 | break; | |
11868 | if (match) { | |
11869 | SV **svp; | |
11870 | av = GvAV(gv); | |
11871 | if (!av || SvRMAGICAL(av)) | |
11872 | break; | |
11873 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
11874 | if (!svp || *svp != uninit_sv) | |
11875 | break; | |
11876 | } | |
11877 | return varname(gv, '$', 0, | |
a0714e2c | 11878 | NULL, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); |
bd81e77b NC |
11879 | } |
11880 | break; | |
1d7c1841 | 11881 | |
bd81e77b NC |
11882 | case OP_EXISTS: |
11883 | o = cUNOPx(obase)->op_first; | |
11884 | if (!o || o->op_type != OP_NULL || | |
11885 | ! (o->op_targ == OP_AELEM || o->op_targ == OP_HELEM)) | |
11886 | break; | |
11887 | return find_uninit_var(cBINOPo->op_last, uninit_sv, match); | |
a2efc822 | 11888 | |
bd81e77b NC |
11889 | case OP_AELEM: |
11890 | case OP_HELEM: | |
11891 | if (PL_op == obase) | |
11892 | /* $a[uninit_expr] or $h{uninit_expr} */ | |
11893 | return find_uninit_var(cBINOPx(obase)->op_last, uninit_sv, match); | |
081fc587 | 11894 | |
a0714e2c | 11895 | gv = NULL; |
bd81e77b NC |
11896 | o = cBINOPx(obase)->op_first; |
11897 | kid = cBINOPx(obase)->op_last; | |
8cf8f3d1 | 11898 | |
bd81e77b | 11899 | /* get the av or hv, and optionally the gv */ |
a0714e2c | 11900 | sv = NULL; |
bd81e77b NC |
11901 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) { |
11902 | sv = PAD_SV(o->op_targ); | |
11903 | } | |
11904 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_RV2HV) | |
11905 | && cUNOPo->op_first->op_type == OP_GV) | |
11906 | { | |
11907 | gv = cGVOPx_gv(cUNOPo->op_first); | |
11908 | if (!gv) | |
11909 | break; | |
11910 | sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv); | |
11911 | } | |
11912 | if (!sv) | |
11913 | break; | |
11914 | ||
11915 | if (kid && kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) { | |
11916 | /* index is constant */ | |
11917 | if (match) { | |
11918 | if (SvMAGICAL(sv)) | |
11919 | break; | |
11920 | if (obase->op_type == OP_HELEM) { | |
11921 | HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0); | |
11922 | if (!he || HeVAL(he) != uninit_sv) | |
11923 | break; | |
11924 | } | |
11925 | else { | |
00b6aa41 | 11926 | SV * const * const svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE); |
bd81e77b NC |
11927 | if (!svp || *svp != uninit_sv) |
11928 | break; | |
11929 | } | |
11930 | } | |
11931 | if (obase->op_type == OP_HELEM) | |
11932 | return varname(gv, '%', o->op_targ, | |
11933 | cSVOPx_sv(kid), 0, FUV_SUBSCRIPT_HASH); | |
11934 | else | |
a0714e2c | 11935 | return varname(gv, '@', o->op_targ, NULL, |
bd81e77b | 11936 | SvIV(cSVOPx_sv(kid)), FUV_SUBSCRIPT_ARRAY); |
bd81e77b NC |
11937 | } |
11938 | else { | |
11939 | /* index is an expression; | |
11940 | * attempt to find a match within the aggregate */ | |
11941 | if (obase->op_type == OP_HELEM) { | |
d4c19fe8 | 11942 | SV * const keysv = find_hash_subscript((HV*)sv, uninit_sv); |
bd81e77b NC |
11943 | if (keysv) |
11944 | return varname(gv, '%', o->op_targ, | |
11945 | keysv, 0, FUV_SUBSCRIPT_HASH); | |
11946 | } | |
11947 | else { | |
d4c19fe8 | 11948 | const I32 index = find_array_subscript((AV*)sv, uninit_sv); |
bd81e77b NC |
11949 | if (index >= 0) |
11950 | return varname(gv, '@', o->op_targ, | |
a0714e2c | 11951 | NULL, index, FUV_SUBSCRIPT_ARRAY); |
bd81e77b NC |
11952 | } |
11953 | if (match) | |
11954 | break; | |
11955 | return varname(gv, | |
11956 | (o->op_type == OP_PADAV || o->op_type == OP_RV2AV) | |
11957 | ? '@' : '%', | |
a0714e2c | 11958 | o->op_targ, NULL, 0, FUV_SUBSCRIPT_WITHIN); |
f284b03f | 11959 | } |
bd81e77b | 11960 | break; |
dc507217 | 11961 | |
bd81e77b NC |
11962 | case OP_AASSIGN: |
11963 | /* only examine RHS */ | |
11964 | return find_uninit_var(cBINOPx(obase)->op_first, uninit_sv, match); | |
6d26897e | 11965 | |
bd81e77b NC |
11966 | case OP_OPEN: |
11967 | o = cUNOPx(obase)->op_first; | |
11968 | if (o->op_type == OP_PUSHMARK) | |
11969 | o = o->op_sibling; | |
1d7c1841 | 11970 | |
bd81e77b NC |
11971 | if (!o->op_sibling) { |
11972 | /* one-arg version of open is highly magical */ | |
a0ae6670 | 11973 | |
bd81e77b NC |
11974 | if (o->op_type == OP_GV) { /* open FOO; */ |
11975 | gv = cGVOPx_gv(o); | |
11976 | if (match && GvSV(gv) != uninit_sv) | |
11977 | break; | |
11978 | return varname(gv, '$', 0, | |
a0714e2c | 11979 | NULL, 0, FUV_SUBSCRIPT_NONE); |
bd81e77b NC |
11980 | } |
11981 | /* other possibilities not handled are: | |
11982 | * open $x; or open my $x; should return '${*$x}' | |
11983 | * open expr; should return '$'.expr ideally | |
11984 | */ | |
11985 | break; | |
11986 | } | |
11987 | goto do_op; | |
ccfc67b7 | 11988 | |
bd81e77b NC |
11989 | /* ops where $_ may be an implicit arg */ |
11990 | case OP_TRANS: | |
11991 | case OP_SUBST: | |
11992 | case OP_MATCH: | |
11993 | if ( !(obase->op_flags & OPf_STACKED)) { | |
11994 | if (uninit_sv == ((obase->op_private & OPpTARGET_MY) | |
11995 | ? PAD_SVl(obase->op_targ) | |
11996 | : DEFSV)) | |
11997 | { | |
11998 | sv = sv_newmortal(); | |
11999 | sv_setpvn(sv, "$_", 2); | |
12000 | return sv; | |
12001 | } | |
12002 | } | |
12003 | goto do_op; | |
9f4817db | 12004 | |
bd81e77b NC |
12005 | case OP_PRTF: |
12006 | case OP_PRINT: | |
12007 | /* skip filehandle as it can't produce 'undef' warning */ | |
12008 | o = cUNOPx(obase)->op_first; | |
12009 | if ((obase->op_flags & OPf_STACKED) && o->op_type == OP_PUSHMARK) | |
12010 | o = o->op_sibling->op_sibling; | |
12011 | goto do_op2; | |
9f4817db | 12012 | |
9f4817db | 12013 | |
bd81e77b NC |
12014 | case OP_RV2SV: |
12015 | case OP_CUSTOM: | |
12016 | case OP_ENTERSUB: | |
12017 | match = 1; /* XS or custom code could trigger random warnings */ | |
12018 | goto do_op; | |
9f4817db | 12019 | |
bd81e77b NC |
12020 | case OP_SCHOMP: |
12021 | case OP_CHOMP: | |
12022 | if (SvROK(PL_rs) && uninit_sv == SvRV(PL_rs)) | |
396482e1 | 12023 | return sv_2mortal(newSVpvs("${$/}")); |
5f66b61c | 12024 | /*FALLTHROUGH*/ |
5d170f3a | 12025 | |
bd81e77b NC |
12026 | default: |
12027 | do_op: | |
12028 | if (!(obase->op_flags & OPf_KIDS)) | |
12029 | break; | |
12030 | o = cUNOPx(obase)->op_first; | |
12031 | ||
12032 | do_op2: | |
12033 | if (!o) | |
12034 | break; | |
f9893866 | 12035 | |
bd81e77b NC |
12036 | /* if all except one arg are constant, or have no side-effects, |
12037 | * or are optimized away, then it's unambiguous */ | |
5f66b61c | 12038 | o2 = NULL; |
bd81e77b | 12039 | for (kid=o; kid; kid = kid->op_sibling) { |
e15d5972 AL |
12040 | if (kid) { |
12041 | const OPCODE type = kid->op_type; | |
12042 | if ( (type == OP_CONST && SvOK(cSVOPx_sv(kid))) | |
12043 | || (type == OP_NULL && ! (kid->op_flags & OPf_KIDS)) | |
12044 | || (type == OP_PUSHMARK) | |
bd81e77b | 12045 | ) |
bd81e77b | 12046 | continue; |
e15d5972 | 12047 | } |
bd81e77b | 12048 | if (o2) { /* more than one found */ |
5f66b61c | 12049 | o2 = NULL; |
bd81e77b NC |
12050 | break; |
12051 | } | |
12052 | o2 = kid; | |
12053 | } | |
12054 | if (o2) | |
12055 | return find_uninit_var(o2, uninit_sv, match); | |
7a5fa8a2 | 12056 | |
bd81e77b NC |
12057 | /* scan all args */ |
12058 | while (o) { | |
12059 | sv = find_uninit_var(o, uninit_sv, 1); | |
12060 | if (sv) | |
12061 | return sv; | |
12062 | o = o->op_sibling; | |
d0063567 | 12063 | } |
bd81e77b | 12064 | break; |
f9893866 | 12065 | } |
a0714e2c | 12066 | return NULL; |
9f4817db JH |
12067 | } |
12068 | ||
220e2d4e | 12069 | |
bd81e77b NC |
12070 | /* |
12071 | =for apidoc report_uninit | |
68795e93 | 12072 | |
bd81e77b | 12073 | Print appropriate "Use of uninitialized variable" warning |
220e2d4e | 12074 | |
bd81e77b NC |
12075 | =cut |
12076 | */ | |
220e2d4e | 12077 | |
bd81e77b NC |
12078 | void |
12079 | Perl_report_uninit(pTHX_ SV* uninit_sv) | |
220e2d4e | 12080 | { |
97aff369 | 12081 | dVAR; |
bd81e77b | 12082 | if (PL_op) { |
a0714e2c | 12083 | SV* varname = NULL; |
bd81e77b NC |
12084 | if (uninit_sv) { |
12085 | varname = find_uninit_var(PL_op, uninit_sv,0); | |
12086 | if (varname) | |
12087 | sv_insert(varname, 0, 0, " ", 1); | |
12088 | } | |
12089 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, | |
12090 | varname ? SvPV_nolen_const(varname) : "", | |
12091 | " in ", OP_DESC(PL_op)); | |
220e2d4e | 12092 | } |
a73e8557 | 12093 | else |
bd81e77b NC |
12094 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
12095 | "", "", ""); | |
220e2d4e | 12096 | } |
f9893866 | 12097 | |
241d1a3b NC |
12098 | /* |
12099 | * Local variables: | |
12100 | * c-indentation-style: bsd | |
12101 | * c-basic-offset: 4 | |
12102 | * indent-tabs-mode: t | |
12103 | * End: | |
12104 | * | |
37442d52 RGS |
12105 | * ex: set ts=8 sts=4 sw=4 noet: |
12106 | */ |