Commit | Line | Data |
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a0d0e21e | 1 | /* sv.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
241d1a3b | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e | 9 | * "I wonder what the Entish is for 'yes' and 'no'," he thought. |
645c22ef DM |
10 | * |
11 | * | |
5e045b90 AMS |
12 | * This file contains the code that creates, manipulates and destroys |
13 | * scalar values (SVs). The other types (AV, HV, GV, etc.) reuse the | |
14 | * structure of an SV, so their creation and destruction is handled | |
15 | * here; higher-level functions are in av.c, hv.c, and so on. Opcode | |
16 | * level functions (eg. substr, split, join) for each of the types are | |
17 | * in the pp*.c files. | |
79072805 LW |
18 | */ |
19 | ||
20 | #include "EXTERN.h" | |
864dbfa3 | 21 | #define PERL_IN_SV_C |
79072805 | 22 | #include "perl.h" |
d2f185dc | 23 | #include "regcomp.h" |
79072805 | 24 | |
51371543 | 25 | #define FCALL *f |
2c5424a7 | 26 | |
2f8ed50e OS |
27 | #ifdef __Lynx__ |
28 | /* Missing proto on LynxOS */ | |
29 | char *gconvert(double, int, int, char *); | |
30 | #endif | |
31 | ||
e23c8137 JH |
32 | #ifdef PERL_UTF8_CACHE_ASSERT |
33 | /* The cache element 0 is the Unicode offset; | |
34 | * the cache element 1 is the byte offset of the element 0; | |
35 | * the cache element 2 is the Unicode length of the substring; | |
36 | * the cache element 3 is the byte length of the substring; | |
37 | * The checking of the substring side would be good | |
38 | * but substr() has enough code paths to make my head spin; | |
39 | * if adding more checks watch out for the following tests: | |
40 | * t/op/index.t t/op/length.t t/op/pat.t t/op/substr.t | |
41 | * lib/utf8.t lib/Unicode/Collate/t/index.t | |
42 | * --jhi | |
43 | */ | |
44 | #define ASSERT_UTF8_CACHE(cache) \ | |
45 | STMT_START { if (cache) { assert((cache)[0] <= (cache)[1]); } } STMT_END | |
46 | #else | |
47 | #define ASSERT_UTF8_CACHE(cache) NOOP | |
48 | #endif | |
49 | ||
f8c7b90f | 50 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 51 | #define SV_COW_NEXT_SV(sv) INT2PTR(SV *,SvUVX(sv)) |
607fa7f2 | 52 | #define SV_COW_NEXT_SV_SET(current,next) SvUV_set(current, PTR2UV(next)) |
b5ccf5f2 | 53 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
765f542d | 54 | on-write. */ |
765f542d | 55 | #endif |
645c22ef DM |
56 | |
57 | /* ============================================================================ | |
58 | ||
59 | =head1 Allocation and deallocation of SVs. | |
60 | ||
5e045b90 AMS |
61 | An SV (or AV, HV, etc.) is allocated in two parts: the head (struct sv, |
62 | av, hv...) contains type and reference count information, as well as a | |
63 | pointer to the body (struct xrv, xpv, xpviv...), which contains fields | |
64 | specific to each type. | |
65 | ||
4977e971 NC |
66 | Normally, this allocation is done using arenas, which by default are |
67 | approximately 4K chunks of memory parcelled up into N heads or bodies. The | |
68 | first slot in each arena is reserved, and is used to hold a link to the next | |
69 | arena. In the case of heads, the unused first slot also contains some flags | |
70 | and a note of the number of slots. Snaked through each arena chain is a | |
5e045b90 | 71 | linked list of free items; when this becomes empty, an extra arena is |
4977e971 | 72 | allocated and divided up into N items which are threaded into the free list. |
645c22ef DM |
73 | |
74 | The following global variables are associated with arenas: | |
75 | ||
76 | PL_sv_arenaroot pointer to list of SV arenas | |
77 | PL_sv_root pointer to list of free SV structures | |
78 | ||
79 | PL_foo_arenaroot pointer to list of foo arenas, | |
80 | PL_foo_root pointer to list of free foo bodies | |
81 | ... for foo in xiv, xnv, xrv, xpv etc. | |
82 | ||
83 | Note that some of the larger and more rarely used body types (eg xpvio) | |
84 | are not allocated using arenas, but are instead just malloc()/free()ed as | |
85 | required. Also, if PURIFY is defined, arenas are abandoned altogether, | |
86 | with all items individually malloc()ed. In addition, a few SV heads are | |
87 | not allocated from an arena, but are instead directly created as static | |
4977e971 NC |
88 | or auto variables, eg PL_sv_undef. The size of arenas can be changed from |
89 | the default by setting PERL_ARENA_SIZE appropriately at compile time. | |
645c22ef DM |
90 | |
91 | The SV arena serves the secondary purpose of allowing still-live SVs | |
92 | to be located and destroyed during final cleanup. | |
93 | ||
94 | At the lowest level, the macros new_SV() and del_SV() grab and free | |
95 | an SV head. (If debugging with -DD, del_SV() calls the function S_del_sv() | |
96 | to return the SV to the free list with error checking.) new_SV() calls | |
97 | more_sv() / sv_add_arena() to add an extra arena if the free list is empty. | |
98 | SVs in the free list have their SvTYPE field set to all ones. | |
99 | ||
100 | Similarly, there are macros new_XIV()/del_XIV(), new_XNV()/del_XNV() etc | |
101 | that allocate and return individual body types. Normally these are mapped | |
ff276b08 RG |
102 | to the arena-manipulating functions new_xiv()/del_xiv() etc, but may be |
103 | instead mapped directly to malloc()/free() if PURIFY is defined. The | |
645c22ef DM |
104 | new/del functions remove from, or add to, the appropriate PL_foo_root |
105 | list, and call more_xiv() etc to add a new arena if the list is empty. | |
106 | ||
ff276b08 | 107 | At the time of very final cleanup, sv_free_arenas() is called from |
645c22ef DM |
108 | perl_destruct() to physically free all the arenas allocated since the |
109 | start of the interpreter. Note that this also clears PL_he_arenaroot, | |
110 | which is otherwise dealt with in hv.c. | |
111 | ||
112 | Manipulation of any of the PL_*root pointers is protected by enclosing | |
113 | LOCK_SV_MUTEX; ... UNLOCK_SV_MUTEX calls which should Do the Right Thing | |
114 | if threads are enabled. | |
115 | ||
116 | The function visit() scans the SV arenas list, and calls a specified | |
117 | function for each SV it finds which is still live - ie which has an SvTYPE | |
118 | other than all 1's, and a non-zero SvREFCNT. visit() is used by the | |
119 | following functions (specified as [function that calls visit()] / [function | |
120 | called by visit() for each SV]): | |
121 | ||
122 | sv_report_used() / do_report_used() | |
123 | dump all remaining SVs (debugging aid) | |
124 | ||
125 | sv_clean_objs() / do_clean_objs(),do_clean_named_objs() | |
126 | Attempt to free all objects pointed to by RVs, | |
127 | and, unless DISABLE_DESTRUCTOR_KLUDGE is defined, | |
128 | try to do the same for all objects indirectly | |
129 | referenced by typeglobs too. Called once from | |
130 | perl_destruct(), prior to calling sv_clean_all() | |
131 | below. | |
132 | ||
133 | sv_clean_all() / do_clean_all() | |
134 | SvREFCNT_dec(sv) each remaining SV, possibly | |
135 | triggering an sv_free(). It also sets the | |
136 | SVf_BREAK flag on the SV to indicate that the | |
137 | refcnt has been artificially lowered, and thus | |
138 | stopping sv_free() from giving spurious warnings | |
139 | about SVs which unexpectedly have a refcnt | |
140 | of zero. called repeatedly from perl_destruct() | |
141 | until there are no SVs left. | |
142 | ||
143 | =head2 Summary | |
144 | ||
145 | Private API to rest of sv.c | |
146 | ||
147 | new_SV(), del_SV(), | |
148 | ||
149 | new_XIV(), del_XIV(), | |
150 | new_XNV(), del_XNV(), | |
151 | etc | |
152 | ||
153 | Public API: | |
154 | ||
8cf8f3d1 | 155 | sv_report_used(), sv_clean_objs(), sv_clean_all(), sv_free_arenas() |
645c22ef DM |
156 | |
157 | ||
158 | =cut | |
159 | ||
160 | ============================================================================ */ | |
161 | ||
162 | ||
51371543 | 163 | |
4561caa4 CS |
164 | /* |
165 | * "A time to plant, and a time to uproot what was planted..." | |
166 | */ | |
167 | ||
cac9b346 | 168 | |
fd0854ff DM |
169 | #ifdef DEBUG_LEAKING_SCALARS |
170 | # ifdef NETWARE | |
171 | # define FREE_SV_DEBUG_FILE(sv) PerlMemfree((sv)->sv_debug_file) | |
172 | # else | |
173 | # define FREE_SV_DEBUG_FILE(sv) PerlMemShared_free((sv)->sv_debug_file) | |
174 | # endif | |
175 | #else | |
176 | # define FREE_SV_DEBUG_FILE(sv) | |
177 | #endif | |
178 | ||
053fc874 GS |
179 | #define plant_SV(p) \ |
180 | STMT_START { \ | |
fd0854ff | 181 | FREE_SV_DEBUG_FILE(p); \ |
053fc874 GS |
182 | SvANY(p) = (void *)PL_sv_root; \ |
183 | SvFLAGS(p) = SVTYPEMASK; \ | |
184 | PL_sv_root = (p); \ | |
185 | --PL_sv_count; \ | |
186 | } STMT_END | |
a0d0e21e | 187 | |
fba3b22e | 188 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
189 | #define uproot_SV(p) \ |
190 | STMT_START { \ | |
191 | (p) = PL_sv_root; \ | |
192 | PL_sv_root = (SV*)SvANY(p); \ | |
193 | ++PL_sv_count; \ | |
194 | } STMT_END | |
195 | ||
645c22ef | 196 | |
cac9b346 NC |
197 | /* make some more SVs by adding another arena */ |
198 | ||
199 | /* sv_mutex must be held while calling more_sv() */ | |
200 | STATIC SV* | |
201 | S_more_sv(pTHX) | |
202 | { | |
203 | SV* sv; | |
204 | ||
205 | if (PL_nice_chunk) { | |
206 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
207 | PL_nice_chunk = Nullch; | |
208 | PL_nice_chunk_size = 0; | |
209 | } | |
210 | else { | |
211 | char *chunk; /* must use New here to match call to */ | |
2e7ed132 NC |
212 | New(704,chunk,PERL_ARENA_SIZE,char); /* Safefree() in sv_free_arenas() */ |
213 | sv_add_arena(chunk, PERL_ARENA_SIZE, 0); | |
cac9b346 NC |
214 | } |
215 | uproot_SV(sv); | |
216 | return sv; | |
217 | } | |
218 | ||
645c22ef DM |
219 | /* new_SV(): return a new, empty SV head */ |
220 | ||
eba0f806 DM |
221 | #ifdef DEBUG_LEAKING_SCALARS |
222 | /* provide a real function for a debugger to play with */ | |
223 | STATIC SV* | |
224 | S_new_SV(pTHX) | |
225 | { | |
226 | SV* sv; | |
227 | ||
228 | LOCK_SV_MUTEX; | |
229 | if (PL_sv_root) | |
230 | uproot_SV(sv); | |
231 | else | |
cac9b346 | 232 | sv = S_more_sv(aTHX); |
eba0f806 DM |
233 | UNLOCK_SV_MUTEX; |
234 | SvANY(sv) = 0; | |
235 | SvREFCNT(sv) = 1; | |
236 | SvFLAGS(sv) = 0; | |
fd0854ff DM |
237 | sv->sv_debug_optype = PL_op ? PL_op->op_type : 0; |
238 | sv->sv_debug_line = (U16) ((PL_copline == NOLINE) ? | |
239 | (PL_curcop ? CopLINE(PL_curcop) : 0) : PL_copline); | |
240 | sv->sv_debug_inpad = 0; | |
241 | sv->sv_debug_cloned = 0; | |
242 | # ifdef NETWARE | |
243 | sv->sv_debug_file = PL_curcop ? savepv(CopFILE(PL_curcop)): NULL; | |
244 | # else | |
245 | sv->sv_debug_file = PL_curcop ? savesharedpv(CopFILE(PL_curcop)): NULL; | |
246 | # endif | |
247 | ||
eba0f806 DM |
248 | return sv; |
249 | } | |
250 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
251 | ||
252 | #else | |
253 | # define new_SV(p) \ | |
053fc874 GS |
254 | STMT_START { \ |
255 | LOCK_SV_MUTEX; \ | |
256 | if (PL_sv_root) \ | |
257 | uproot_SV(p); \ | |
258 | else \ | |
cac9b346 | 259 | (p) = S_more_sv(aTHX); \ |
053fc874 GS |
260 | UNLOCK_SV_MUTEX; \ |
261 | SvANY(p) = 0; \ | |
262 | SvREFCNT(p) = 1; \ | |
263 | SvFLAGS(p) = 0; \ | |
264 | } STMT_END | |
eba0f806 | 265 | #endif |
463ee0b2 | 266 | |
645c22ef DM |
267 | |
268 | /* del_SV(): return an empty SV head to the free list */ | |
269 | ||
a0d0e21e | 270 | #ifdef DEBUGGING |
4561caa4 | 271 | |
053fc874 GS |
272 | #define del_SV(p) \ |
273 | STMT_START { \ | |
274 | LOCK_SV_MUTEX; \ | |
aea4f609 | 275 | if (DEBUG_D_TEST) \ |
053fc874 GS |
276 | del_sv(p); \ |
277 | else \ | |
278 | plant_SV(p); \ | |
279 | UNLOCK_SV_MUTEX; \ | |
280 | } STMT_END | |
a0d0e21e | 281 | |
76e3520e | 282 | STATIC void |
cea2e8a9 | 283 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 284 | { |
aea4f609 | 285 | if (DEBUG_D_TEST) { |
4633a7c4 | 286 | SV* sva; |
a3b680e6 | 287 | bool ok = 0; |
3280af22 | 288 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
53c1dcc0 AL |
289 | const SV * const sv = sva + 1; |
290 | const SV * const svend = &sva[SvREFCNT(sva)]; | |
c0ff570e | 291 | if (p >= sv && p < svend) { |
a0d0e21e | 292 | ok = 1; |
c0ff570e NC |
293 | break; |
294 | } | |
a0d0e21e LW |
295 | } |
296 | if (!ok) { | |
0453d815 | 297 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 298 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
299 | "Attempt to free non-arena SV: 0x%"UVxf |
300 | pTHX__FORMAT, PTR2UV(p) pTHX__VALUE); | |
a0d0e21e LW |
301 | return; |
302 | } | |
303 | } | |
4561caa4 | 304 | plant_SV(p); |
463ee0b2 | 305 | } |
a0d0e21e | 306 | |
4561caa4 CS |
307 | #else /* ! DEBUGGING */ |
308 | ||
309 | #define del_SV(p) plant_SV(p) | |
310 | ||
311 | #endif /* DEBUGGING */ | |
463ee0b2 | 312 | |
645c22ef DM |
313 | |
314 | /* | |
ccfc67b7 JH |
315 | =head1 SV Manipulation Functions |
316 | ||
645c22ef DM |
317 | =for apidoc sv_add_arena |
318 | ||
319 | Given a chunk of memory, link it to the head of the list of arenas, | |
320 | and split it into a list of free SVs. | |
321 | ||
322 | =cut | |
323 | */ | |
324 | ||
4633a7c4 | 325 | void |
864dbfa3 | 326 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 327 | { |
4633a7c4 | 328 | SV* sva = (SV*)ptr; |
463ee0b2 LW |
329 | register SV* sv; |
330 | register SV* svend; | |
4633a7c4 LW |
331 | |
332 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 333 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
334 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
335 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
336 | ||
3280af22 NIS |
337 | PL_sv_arenaroot = sva; |
338 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
339 | |
340 | svend = &sva[SvREFCNT(sva) - 1]; | |
341 | sv = sva + 1; | |
463ee0b2 | 342 | while (sv < svend) { |
a0d0e21e | 343 | SvANY(sv) = (void *)(SV*)(sv + 1); |
03e36789 | 344 | #ifdef DEBUGGING |
978b032e | 345 | SvREFCNT(sv) = 0; |
03e36789 NC |
346 | #endif |
347 | /* Must always set typemask because it's awlays checked in on cleanup | |
348 | when the arenas are walked looking for objects. */ | |
8990e307 | 349 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
350 | sv++; |
351 | } | |
352 | SvANY(sv) = 0; | |
03e36789 NC |
353 | #ifdef DEBUGGING |
354 | SvREFCNT(sv) = 0; | |
355 | #endif | |
4633a7c4 LW |
356 | SvFLAGS(sv) = SVTYPEMASK; |
357 | } | |
358 | ||
055972dc DM |
359 | /* visit(): call the named function for each non-free SV in the arenas |
360 | * whose flags field matches the flags/mask args. */ | |
645c22ef | 361 | |
5226ed68 | 362 | STATIC I32 |
055972dc | 363 | S_visit(pTHX_ SVFUNC_t f, U32 flags, U32 mask) |
8990e307 | 364 | { |
4633a7c4 | 365 | SV* sva; |
5226ed68 | 366 | I32 visited = 0; |
8990e307 | 367 | |
3280af22 | 368 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
53c1dcc0 | 369 | register const SV * const svend = &sva[SvREFCNT(sva)]; |
a3b680e6 | 370 | register SV* sv; |
4561caa4 | 371 | for (sv = sva + 1; sv < svend; ++sv) { |
055972dc DM |
372 | if (SvTYPE(sv) != SVTYPEMASK |
373 | && (sv->sv_flags & mask) == flags | |
374 | && SvREFCNT(sv)) | |
375 | { | |
acfe0abc | 376 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
377 | ++visited; |
378 | } | |
8990e307 LW |
379 | } |
380 | } | |
5226ed68 | 381 | return visited; |
8990e307 LW |
382 | } |
383 | ||
758a08c3 JH |
384 | #ifdef DEBUGGING |
385 | ||
645c22ef DM |
386 | /* called by sv_report_used() for each live SV */ |
387 | ||
388 | static void | |
acfe0abc | 389 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
390 | { |
391 | if (SvTYPE(sv) != SVTYPEMASK) { | |
392 | PerlIO_printf(Perl_debug_log, "****\n"); | |
393 | sv_dump(sv); | |
394 | } | |
395 | } | |
758a08c3 | 396 | #endif |
645c22ef DM |
397 | |
398 | /* | |
399 | =for apidoc sv_report_used | |
400 | ||
401 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
402 | ||
403 | =cut | |
404 | */ | |
405 | ||
8990e307 | 406 | void |
864dbfa3 | 407 | Perl_sv_report_used(pTHX) |
4561caa4 | 408 | { |
ff270d3a | 409 | #ifdef DEBUGGING |
055972dc | 410 | visit(do_report_used, 0, 0); |
ff270d3a | 411 | #endif |
4561caa4 CS |
412 | } |
413 | ||
645c22ef DM |
414 | /* called by sv_clean_objs() for each live SV */ |
415 | ||
416 | static void | |
e15faf7d | 417 | do_clean_objs(pTHX_ SV *ref) |
645c22ef | 418 | { |
e15faf7d | 419 | SV* target; |
645c22ef | 420 | |
e15faf7d NC |
421 | if (SvROK(ref) && SvOBJECT(target = SvRV(ref))) { |
422 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(ref))); | |
423 | if (SvWEAKREF(ref)) { | |
424 | sv_del_backref(target, ref); | |
425 | SvWEAKREF_off(ref); | |
426 | SvRV_set(ref, NULL); | |
645c22ef | 427 | } else { |
e15faf7d NC |
428 | SvROK_off(ref); |
429 | SvRV_set(ref, NULL); | |
430 | SvREFCNT_dec(target); | |
645c22ef DM |
431 | } |
432 | } | |
433 | ||
434 | /* XXX Might want to check arrays, etc. */ | |
435 | } | |
436 | ||
437 | /* called by sv_clean_objs() for each live SV */ | |
438 | ||
439 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
440 | static void | |
acfe0abc | 441 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef DM |
442 | { |
443 | if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) { | |
c69033f2 NC |
444 | if (( |
445 | #ifdef PERL_DONT_CREATE_GVSV | |
446 | GvSV(sv) && | |
447 | #endif | |
448 | SvOBJECT(GvSV(sv))) || | |
645c22ef DM |
449 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || |
450 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
451 | (GvIO(sv) && SvOBJECT(GvIO(sv))) || | |
452 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) | |
453 | { | |
454 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
ec5f3c78 | 455 | SvFLAGS(sv) |= SVf_BREAK; |
645c22ef DM |
456 | SvREFCNT_dec(sv); |
457 | } | |
458 | } | |
459 | } | |
460 | #endif | |
461 | ||
462 | /* | |
463 | =for apidoc sv_clean_objs | |
464 | ||
465 | Attempt to destroy all objects not yet freed | |
466 | ||
467 | =cut | |
468 | */ | |
469 | ||
4561caa4 | 470 | void |
864dbfa3 | 471 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 472 | { |
3280af22 | 473 | PL_in_clean_objs = TRUE; |
055972dc | 474 | visit(do_clean_objs, SVf_ROK, SVf_ROK); |
4561caa4 | 475 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
2d0f3c12 | 476 | /* some barnacles may yet remain, clinging to typeglobs */ |
055972dc | 477 | visit(do_clean_named_objs, SVt_PVGV, SVTYPEMASK); |
4561caa4 | 478 | #endif |
3280af22 | 479 | PL_in_clean_objs = FALSE; |
4561caa4 CS |
480 | } |
481 | ||
645c22ef DM |
482 | /* called by sv_clean_all() for each live SV */ |
483 | ||
484 | static void | |
acfe0abc | 485 | do_clean_all(pTHX_ SV *sv) |
645c22ef DM |
486 | { |
487 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); | |
488 | SvFLAGS(sv) |= SVf_BREAK; | |
0e705b3b DM |
489 | if (PL_comppad == (AV*)sv) { |
490 | PL_comppad = Nullav; | |
491 | PL_curpad = Null(SV**); | |
492 | } | |
645c22ef DM |
493 | SvREFCNT_dec(sv); |
494 | } | |
495 | ||
496 | /* | |
497 | =for apidoc sv_clean_all | |
498 | ||
499 | Decrement the refcnt of each remaining SV, possibly triggering a | |
500 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 501 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
502 | |
503 | =cut | |
504 | */ | |
505 | ||
5226ed68 | 506 | I32 |
864dbfa3 | 507 | Perl_sv_clean_all(pTHX) |
8990e307 | 508 | { |
5226ed68 | 509 | I32 cleaned; |
3280af22 | 510 | PL_in_clean_all = TRUE; |
055972dc | 511 | cleaned = visit(do_clean_all, 0,0); |
3280af22 | 512 | PL_in_clean_all = FALSE; |
5226ed68 | 513 | return cleaned; |
8990e307 | 514 | } |
463ee0b2 | 515 | |
7cfef17e NC |
516 | static void |
517 | S_free_arena(pTHX_ void **root) { | |
518 | while (root) { | |
1b6737cc | 519 | void ** const next = *(void **)root; |
7cfef17e NC |
520 | Safefree(root); |
521 | root = next; | |
522 | } | |
523 | } | |
524 | ||
645c22ef DM |
525 | /* |
526 | =for apidoc sv_free_arenas | |
527 | ||
528 | Deallocate the memory used by all arenas. Note that all the individual SV | |
529 | heads and bodies within the arenas must already have been freed. | |
530 | ||
531 | =cut | |
532 | */ | |
533 | ||
7cfef17e NC |
534 | #define free_arena(name) \ |
535 | STMT_START { \ | |
536 | S_free_arena(aTHX_ (void**) PL_ ## name ## _arenaroot); \ | |
537 | PL_ ## name ## _arenaroot = 0; \ | |
538 | PL_ ## name ## _root = 0; \ | |
539 | } STMT_END | |
540 | ||
4633a7c4 | 541 | void |
864dbfa3 | 542 | Perl_sv_free_arenas(pTHX) |
4633a7c4 LW |
543 | { |
544 | SV* sva; | |
545 | SV* svanext; | |
546 | ||
547 | /* Free arenas here, but be careful about fake ones. (We assume | |
548 | contiguity of the fake ones with the corresponding real ones.) */ | |
549 | ||
3280af22 | 550 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
551 | svanext = (SV*) SvANY(sva); |
552 | while (svanext && SvFAKE(svanext)) | |
553 | svanext = (SV*) SvANY(svanext); | |
554 | ||
555 | if (!SvFAKE(sva)) | |
1df70142 | 556 | Safefree(sva); |
4633a7c4 | 557 | } |
8b4f5e17 | 558 | |
7cfef17e NC |
559 | free_arena(xnv); |
560 | free_arena(xpv); | |
561 | free_arena(xpviv); | |
562 | free_arena(xpvnv); | |
563 | free_arena(xpvcv); | |
564 | free_arena(xpvav); | |
565 | free_arena(xpvhv); | |
566 | free_arena(xpvmg); | |
567 | free_arena(xpvgv); | |
568 | free_arena(xpvlv); | |
569 | free_arena(xpvbm); | |
570 | free_arena(he); | |
571 | #if defined(USE_ITHREADS) | |
572 | free_arena(pte); | |
573 | #endif | |
612f20c3 | 574 | |
3280af22 NIS |
575 | if (PL_nice_chunk) |
576 | Safefree(PL_nice_chunk); | |
577 | PL_nice_chunk = Nullch; | |
578 | PL_nice_chunk_size = 0; | |
579 | PL_sv_arenaroot = 0; | |
580 | PL_sv_root = 0; | |
4633a7c4 LW |
581 | } |
582 | ||
29489e7c DM |
583 | /* --------------------------------------------------------------------- |
584 | * | |
585 | * support functions for report_uninit() | |
586 | */ | |
587 | ||
588 | /* the maxiumum size of array or hash where we will scan looking | |
589 | * for the undefined element that triggered the warning */ | |
590 | ||
591 | #define FUV_MAX_SEARCH_SIZE 1000 | |
592 | ||
593 | /* Look for an entry in the hash whose value has the same SV as val; | |
594 | * If so, return a mortal copy of the key. */ | |
595 | ||
596 | STATIC SV* | |
597 | S_find_hash_subscript(pTHX_ HV *hv, SV* val) | |
598 | { | |
27da23d5 | 599 | dVAR; |
29489e7c | 600 | register HE **array; |
29489e7c DM |
601 | I32 i; |
602 | ||
603 | if (!hv || SvMAGICAL(hv) || !HvARRAY(hv) || | |
604 | (HvTOTALKEYS(hv) > FUV_MAX_SEARCH_SIZE)) | |
605 | return Nullsv; | |
606 | ||
607 | array = HvARRAY(hv); | |
608 | ||
609 | for (i=HvMAX(hv); i>0; i--) { | |
f54cb97a | 610 | register HE *entry; |
29489e7c DM |
611 | for (entry = array[i]; entry; entry = HeNEXT(entry)) { |
612 | if (HeVAL(entry) != val) | |
613 | continue; | |
614 | if ( HeVAL(entry) == &PL_sv_undef || | |
615 | HeVAL(entry) == &PL_sv_placeholder) | |
616 | continue; | |
617 | if (!HeKEY(entry)) | |
618 | return Nullsv; | |
619 | if (HeKLEN(entry) == HEf_SVKEY) | |
620 | return sv_mortalcopy(HeKEY_sv(entry)); | |
621 | return sv_2mortal(newSVpvn(HeKEY(entry), HeKLEN(entry))); | |
622 | } | |
623 | } | |
624 | return Nullsv; | |
625 | } | |
626 | ||
627 | /* Look for an entry in the array whose value has the same SV as val; | |
628 | * If so, return the index, otherwise return -1. */ | |
629 | ||
630 | STATIC I32 | |
631 | S_find_array_subscript(pTHX_ AV *av, SV* val) | |
632 | { | |
633 | SV** svp; | |
634 | I32 i; | |
635 | if (!av || SvMAGICAL(av) || !AvARRAY(av) || | |
636 | (AvFILLp(av) > FUV_MAX_SEARCH_SIZE)) | |
637 | return -1; | |
638 | ||
639 | svp = AvARRAY(av); | |
640 | for (i=AvFILLp(av); i>=0; i--) { | |
641 | if (svp[i] == val && svp[i] != &PL_sv_undef) | |
642 | return i; | |
643 | } | |
644 | return -1; | |
645 | } | |
646 | ||
647 | /* S_varname(): return the name of a variable, optionally with a subscript. | |
648 | * If gv is non-zero, use the name of that global, along with gvtype (one | |
649 | * of "$", "@", "%"); otherwise use the name of the lexical at pad offset | |
650 | * targ. Depending on the value of the subscript_type flag, return: | |
651 | */ | |
652 | ||
653 | #define FUV_SUBSCRIPT_NONE 1 /* "@foo" */ | |
654 | #define FUV_SUBSCRIPT_ARRAY 2 /* "$foo[aindex]" */ | |
655 | #define FUV_SUBSCRIPT_HASH 3 /* "$foo{keyname}" */ | |
656 | #define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */ | |
657 | ||
658 | STATIC SV* | |
bfed75c6 | 659 | S_varname(pTHX_ GV *gv, const char *gvtype, PADOFFSET targ, |
29489e7c DM |
660 | SV* keyname, I32 aindex, int subscript_type) |
661 | { | |
29489e7c | 662 | |
a3b680e6 | 663 | SV * const name = sv_newmortal(); |
29489e7c DM |
664 | if (gv) { |
665 | ||
666 | /* simulate gv_fullname4(), but add literal '^' for $^FOO names | |
667 | * XXX get rid of all this if gv_fullnameX() ever supports this | |
668 | * directly */ | |
669 | ||
bfed75c6 | 670 | const char *p; |
53c1dcc0 | 671 | HV * const hv = GvSTASH(gv); |
29489e7c DM |
672 | sv_setpv(name, gvtype); |
673 | if (!hv) | |
674 | p = "???"; | |
bfcb3514 | 675 | else if (!(p=HvNAME_get(hv))) |
29489e7c | 676 | p = "__ANON__"; |
29489e7c DM |
677 | if (strNE(p, "main")) { |
678 | sv_catpv(name,p); | |
679 | sv_catpvn(name,"::", 2); | |
680 | } | |
681 | if (GvNAMELEN(gv)>= 1 && | |
682 | ((unsigned int)*GvNAME(gv)) <= 26) | |
683 | { /* handle $^FOO */ | |
684 | Perl_sv_catpvf(aTHX_ name,"^%c", *GvNAME(gv) + 'A' - 1); | |
685 | sv_catpvn(name,GvNAME(gv)+1,GvNAMELEN(gv)-1); | |
686 | } | |
687 | else | |
688 | sv_catpvn(name,GvNAME(gv),GvNAMELEN(gv)); | |
689 | } | |
690 | else { | |
53c1dcc0 AL |
691 | U32 unused; |
692 | CV * const cv = find_runcv(&unused); | |
693 | SV *sv; | |
694 | AV *av; | |
695 | ||
29489e7c | 696 | if (!cv || !CvPADLIST(cv)) |
1b6737cc | 697 | return Nullsv; |
29489e7c DM |
698 | av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE)); |
699 | sv = *av_fetch(av, targ, FALSE); | |
700 | /* SvLEN in a pad name is not to be trusted */ | |
f9926b10 | 701 | sv_setpv(name, SvPV_nolen_const(sv)); |
29489e7c DM |
702 | } |
703 | ||
704 | if (subscript_type == FUV_SUBSCRIPT_HASH) { | |
1b6737cc | 705 | SV * const sv = NEWSV(0,0); |
29489e7c | 706 | *SvPVX(name) = '$'; |
29489e7c | 707 | Perl_sv_catpvf(aTHX_ name, "{%s}", |
3f7c398e | 708 | pv_display(sv,SvPVX_const(keyname), SvCUR(keyname), 0, 32)); |
29489e7c DM |
709 | SvREFCNT_dec(sv); |
710 | } | |
711 | else if (subscript_type == FUV_SUBSCRIPT_ARRAY) { | |
712 | *SvPVX(name) = '$'; | |
265a12b8 | 713 | Perl_sv_catpvf(aTHX_ name, "[%"IVdf"]", (IV)aindex); |
29489e7c DM |
714 | } |
715 | else if (subscript_type == FUV_SUBSCRIPT_WITHIN) | |
716 | sv_insert(name, 0, 0, "within ", 7); | |
717 | ||
718 | return name; | |
719 | } | |
720 | ||
721 | ||
722 | /* | |
723 | =for apidoc find_uninit_var | |
724 | ||
725 | Find the name of the undefined variable (if any) that caused the operator o | |
726 | to issue a "Use of uninitialized value" warning. | |
727 | If match is true, only return a name if it's value matches uninit_sv. | |
728 | So roughly speaking, if a unary operator (such as OP_COS) generates a | |
729 | warning, then following the direct child of the op may yield an | |
730 | OP_PADSV or OP_GV that gives the name of the undefined variable. On the | |
731 | other hand, with OP_ADD there are two branches to follow, so we only print | |
732 | the variable name if we get an exact match. | |
733 | ||
734 | The name is returned as a mortal SV. | |
735 | ||
736 | Assumes that PL_op is the op that originally triggered the error, and that | |
737 | PL_comppad/PL_curpad points to the currently executing pad. | |
738 | ||
739 | =cut | |
740 | */ | |
741 | ||
742 | STATIC SV * | |
743 | S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match) | |
744 | { | |
27da23d5 | 745 | dVAR; |
29489e7c DM |
746 | SV *sv; |
747 | AV *av; | |
29489e7c DM |
748 | GV *gv; |
749 | OP *o, *o2, *kid; | |
750 | ||
751 | if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef || | |
752 | uninit_sv == &PL_sv_placeholder))) | |
753 | return Nullsv; | |
754 | ||
755 | switch (obase->op_type) { | |
756 | ||
757 | case OP_RV2AV: | |
758 | case OP_RV2HV: | |
759 | case OP_PADAV: | |
760 | case OP_PADHV: | |
761 | { | |
f54cb97a AL |
762 | const bool pad = (obase->op_type == OP_PADAV || obase->op_type == OP_PADHV); |
763 | const bool hash = (obase->op_type == OP_PADHV || obase->op_type == OP_RV2HV); | |
112dcc46 RGS |
764 | I32 index = 0; |
765 | SV *keysv = Nullsv; | |
29489e7c DM |
766 | int subscript_type = FUV_SUBSCRIPT_WITHIN; |
767 | ||
768 | if (pad) { /* @lex, %lex */ | |
769 | sv = PAD_SVl(obase->op_targ); | |
770 | gv = Nullgv; | |
771 | } | |
772 | else { | |
773 | if (cUNOPx(obase)->op_first->op_type == OP_GV) { | |
774 | /* @global, %global */ | |
775 | gv = cGVOPx_gv(cUNOPx(obase)->op_first); | |
776 | if (!gv) | |
777 | break; | |
778 | sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv); | |
779 | } | |
780 | else /* @{expr}, %{expr} */ | |
781 | return find_uninit_var(cUNOPx(obase)->op_first, | |
782 | uninit_sv, match); | |
783 | } | |
784 | ||
785 | /* attempt to find a match within the aggregate */ | |
786 | if (hash) { | |
787 | keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
788 | if (keysv) | |
789 | subscript_type = FUV_SUBSCRIPT_HASH; | |
790 | } | |
791 | else { | |
792 | index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
793 | if (index >= 0) | |
794 | subscript_type = FUV_SUBSCRIPT_ARRAY; | |
795 | } | |
796 | ||
797 | if (match && subscript_type == FUV_SUBSCRIPT_WITHIN) | |
798 | break; | |
799 | ||
1b6737cc | 800 | return varname(gv, hash ? "%" : "@", obase->op_targ, |
29489e7c DM |
801 | keysv, index, subscript_type); |
802 | } | |
803 | ||
804 | case OP_PADSV: | |
805 | if (match && PAD_SVl(obase->op_targ) != uninit_sv) | |
806 | break; | |
1b6737cc | 807 | return varname(Nullgv, "$", obase->op_targ, |
29489e7c DM |
808 | Nullsv, 0, FUV_SUBSCRIPT_NONE); |
809 | ||
810 | case OP_GVSV: | |
811 | gv = cGVOPx_gv(obase); | |
812 | if (!gv || (match && GvSV(gv) != uninit_sv)) | |
813 | break; | |
1b6737cc | 814 | return varname(gv, "$", 0, Nullsv, 0, FUV_SUBSCRIPT_NONE); |
29489e7c DM |
815 | |
816 | case OP_AELEMFAST: | |
817 | if (obase->op_flags & OPf_SPECIAL) { /* lexical array */ | |
818 | if (match) { | |
1b6737cc | 819 | SV **svp; |
29489e7c DM |
820 | av = (AV*)PAD_SV(obase->op_targ); |
821 | if (!av || SvRMAGICAL(av)) | |
822 | break; | |
823 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
824 | if (!svp || *svp != uninit_sv) | |
825 | break; | |
826 | } | |
1b6737cc | 827 | return varname(Nullgv, "$", obase->op_targ, |
29489e7c DM |
828 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); |
829 | } | |
830 | else { | |
831 | gv = cGVOPx_gv(obase); | |
832 | if (!gv) | |
833 | break; | |
834 | if (match) { | |
1b6737cc | 835 | SV **svp; |
29489e7c DM |
836 | av = GvAV(gv); |
837 | if (!av || SvRMAGICAL(av)) | |
838 | break; | |
839 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
840 | if (!svp || *svp != uninit_sv) | |
841 | break; | |
842 | } | |
1b6737cc | 843 | return varname(gv, "$", 0, |
29489e7c DM |
844 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); |
845 | } | |
846 | break; | |
847 | ||
848 | case OP_EXISTS: | |
849 | o = cUNOPx(obase)->op_first; | |
850 | if (!o || o->op_type != OP_NULL || | |
851 | ! (o->op_targ == OP_AELEM || o->op_targ == OP_HELEM)) | |
852 | break; | |
853 | return find_uninit_var(cBINOPo->op_last, uninit_sv, match); | |
854 | ||
855 | case OP_AELEM: | |
856 | case OP_HELEM: | |
857 | if (PL_op == obase) | |
858 | /* $a[uninit_expr] or $h{uninit_expr} */ | |
859 | return find_uninit_var(cBINOPx(obase)->op_last, uninit_sv, match); | |
860 | ||
861 | gv = Nullgv; | |
862 | o = cBINOPx(obase)->op_first; | |
863 | kid = cBINOPx(obase)->op_last; | |
864 | ||
865 | /* get the av or hv, and optionally the gv */ | |
866 | sv = Nullsv; | |
867 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) { | |
868 | sv = PAD_SV(o->op_targ); | |
869 | } | |
870 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_RV2HV) | |
871 | && cUNOPo->op_first->op_type == OP_GV) | |
872 | { | |
873 | gv = cGVOPx_gv(cUNOPo->op_first); | |
874 | if (!gv) | |
875 | break; | |
876 | sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv); | |
877 | } | |
878 | if (!sv) | |
879 | break; | |
880 | ||
881 | if (kid && kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) { | |
882 | /* index is constant */ | |
883 | if (match) { | |
884 | if (SvMAGICAL(sv)) | |
885 | break; | |
886 | if (obase->op_type == OP_HELEM) { | |
887 | HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0); | |
888 | if (!he || HeVAL(he) != uninit_sv) | |
889 | break; | |
890 | } | |
891 | else { | |
1b6737cc | 892 | SV ** const svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE); |
29489e7c DM |
893 | if (!svp || *svp != uninit_sv) |
894 | break; | |
895 | } | |
896 | } | |
897 | if (obase->op_type == OP_HELEM) | |
1b6737cc | 898 | return varname(gv, "%", o->op_targ, |
29489e7c DM |
899 | cSVOPx_sv(kid), 0, FUV_SUBSCRIPT_HASH); |
900 | else | |
1b6737cc | 901 | return varname(gv, "@", o->op_targ, Nullsv, |
29489e7c DM |
902 | SvIV(cSVOPx_sv(kid)), FUV_SUBSCRIPT_ARRAY); |
903 | ; | |
904 | } | |
905 | else { | |
906 | /* index is an expression; | |
907 | * attempt to find a match within the aggregate */ | |
908 | if (obase->op_type == OP_HELEM) { | |
53c1dcc0 | 909 | SV * const keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); |
29489e7c | 910 | if (keysv) |
1b6737cc | 911 | return varname(gv, "%", o->op_targ, |
29489e7c DM |
912 | keysv, 0, FUV_SUBSCRIPT_HASH); |
913 | } | |
914 | else { | |
f54cb97a | 915 | const I32 index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); |
29489e7c | 916 | if (index >= 0) |
1b6737cc | 917 | return varname(gv, "@", o->op_targ, |
29489e7c DM |
918 | Nullsv, index, FUV_SUBSCRIPT_ARRAY); |
919 | } | |
920 | if (match) | |
921 | break; | |
1b6737cc | 922 | return varname(gv, |
29489e7c DM |
923 | (o->op_type == OP_PADAV || o->op_type == OP_RV2AV) |
924 | ? "@" : "%", | |
925 | o->op_targ, Nullsv, 0, FUV_SUBSCRIPT_WITHIN); | |
926 | } | |
927 | ||
928 | break; | |
929 | ||
930 | case OP_AASSIGN: | |
931 | /* only examine RHS */ | |
932 | return find_uninit_var(cBINOPx(obase)->op_first, uninit_sv, match); | |
933 | ||
934 | case OP_OPEN: | |
935 | o = cUNOPx(obase)->op_first; | |
936 | if (o->op_type == OP_PUSHMARK) | |
937 | o = o->op_sibling; | |
938 | ||
939 | if (!o->op_sibling) { | |
940 | /* one-arg version of open is highly magical */ | |
941 | ||
942 | if (o->op_type == OP_GV) { /* open FOO; */ | |
943 | gv = cGVOPx_gv(o); | |
944 | if (match && GvSV(gv) != uninit_sv) | |
945 | break; | |
1b6737cc | 946 | return varname(gv, "$", 0, |
29489e7c DM |
947 | Nullsv, 0, FUV_SUBSCRIPT_NONE); |
948 | } | |
949 | /* other possibilities not handled are: | |
950 | * open $x; or open my $x; should return '${*$x}' | |
951 | * open expr; should return '$'.expr ideally | |
952 | */ | |
953 | break; | |
954 | } | |
955 | goto do_op; | |
956 | ||
957 | /* ops where $_ may be an implicit arg */ | |
958 | case OP_TRANS: | |
959 | case OP_SUBST: | |
960 | case OP_MATCH: | |
961 | if ( !(obase->op_flags & OPf_STACKED)) { | |
962 | if (uninit_sv == ((obase->op_private & OPpTARGET_MY) | |
963 | ? PAD_SVl(obase->op_targ) | |
964 | : DEFSV)) | |
965 | { | |
966 | sv = sv_newmortal(); | |
616d8c9c | 967 | sv_setpvn(sv, "$_", 2); |
29489e7c DM |
968 | return sv; |
969 | } | |
970 | } | |
971 | goto do_op; | |
972 | ||
973 | case OP_PRTF: | |
974 | case OP_PRINT: | |
975 | /* skip filehandle as it can't produce 'undef' warning */ | |
976 | o = cUNOPx(obase)->op_first; | |
977 | if ((obase->op_flags & OPf_STACKED) && o->op_type == OP_PUSHMARK) | |
978 | o = o->op_sibling->op_sibling; | |
979 | goto do_op2; | |
980 | ||
981 | ||
e21bd382 | 982 | case OP_RV2SV: |
29489e7c DM |
983 | case OP_CUSTOM: |
984 | case OP_ENTERSUB: | |
985 | match = 1; /* XS or custom code could trigger random warnings */ | |
986 | goto do_op; | |
987 | ||
988 | case OP_SCHOMP: | |
989 | case OP_CHOMP: | |
990 | if (SvROK(PL_rs) && uninit_sv == SvRV(PL_rs)) | |
d0043bd1 | 991 | return sv_2mortal(newSVpvn("${$/}", 5)); |
29489e7c DM |
992 | /* FALL THROUGH */ |
993 | ||
994 | default: | |
995 | do_op: | |
996 | if (!(obase->op_flags & OPf_KIDS)) | |
997 | break; | |
998 | o = cUNOPx(obase)->op_first; | |
999 | ||
1000 | do_op2: | |
1001 | if (!o) | |
1002 | break; | |
1003 | ||
1004 | /* if all except one arg are constant, or have no side-effects, | |
1005 | * or are optimized away, then it's unambiguous */ | |
1006 | o2 = Nullop; | |
1007 | for (kid=o; kid; kid = kid->op_sibling) { | |
1008 | if (kid && | |
1009 | ( (kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) | |
1010 | || (kid->op_type == OP_NULL && ! (kid->op_flags & OPf_KIDS)) | |
1011 | || (kid->op_type == OP_PUSHMARK) | |
1012 | ) | |
1013 | ) | |
1014 | continue; | |
1015 | if (o2) { /* more than one found */ | |
1016 | o2 = Nullop; | |
1017 | break; | |
1018 | } | |
1019 | o2 = kid; | |
1020 | } | |
1021 | if (o2) | |
1022 | return find_uninit_var(o2, uninit_sv, match); | |
1023 | ||
1024 | /* scan all args */ | |
1025 | while (o) { | |
1026 | sv = find_uninit_var(o, uninit_sv, 1); | |
1027 | if (sv) | |
1028 | return sv; | |
1029 | o = o->op_sibling; | |
1030 | } | |
1031 | break; | |
1032 | } | |
1033 | return Nullsv; | |
1034 | } | |
1035 | ||
1036 | ||
645c22ef DM |
1037 | /* |
1038 | =for apidoc report_uninit | |
1039 | ||
1040 | Print appropriate "Use of uninitialized variable" warning | |
1041 | ||
1042 | =cut | |
1043 | */ | |
1044 | ||
1d7c1841 | 1045 | void |
29489e7c DM |
1046 | Perl_report_uninit(pTHX_ SV* uninit_sv) |
1047 | { | |
1048 | if (PL_op) { | |
112dcc46 | 1049 | SV* varname = Nullsv; |
29489e7c DM |
1050 | if (uninit_sv) { |
1051 | varname = find_uninit_var(PL_op, uninit_sv,0); | |
1052 | if (varname) | |
1053 | sv_insert(varname, 0, 0, " ", 1); | |
1054 | } | |
9014280d | 1055 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
93524f2b | 1056 | varname ? SvPV_nolen_const(varname) : "", |
29489e7c DM |
1057 | " in ", OP_DESC(PL_op)); |
1058 | } | |
1d7c1841 | 1059 | else |
29489e7c DM |
1060 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
1061 | "", "", ""); | |
1d7c1841 GS |
1062 | } |
1063 | ||
de042e1d | 1064 | STATIC void * |
e3bbdc67 | 1065 | S_more_bodies (pTHX_ void **arena_root, void **root, size_t size) |
cac9b346 | 1066 | { |
e3bbdc67 NC |
1067 | char *start; |
1068 | const char *end; | |
53c1dcc0 | 1069 | const size_t count = PERL_ARENA_SIZE/size; |
e3bbdc67 NC |
1070 | New(0, start, count*size, char); |
1071 | *((void **) start) = *arena_root; | |
1072 | *arena_root = (void *)start; | |
cac9b346 | 1073 | |
e3bbdc67 | 1074 | end = start + (count-1) * size; |
cac9b346 | 1075 | |
e3bbdc67 NC |
1076 | /* The initial slot is used to link the arenas together, so it isn't to be |
1077 | linked into the list of ready-to-use bodies. */ | |
cac9b346 | 1078 | |
e3bbdc67 | 1079 | start += size; |
cac9b346 | 1080 | |
e3bbdc67 | 1081 | *root = (void *)start; |
cac9b346 | 1082 | |
e3bbdc67 | 1083 | while (start < end) { |
53c1dcc0 | 1084 | char * const next = start + size; |
e3bbdc67 NC |
1085 | *(void**) start = (void *)next; |
1086 | start = next; | |
cac9b346 | 1087 | } |
e3bbdc67 | 1088 | *(void **)start = 0; |
de042e1d NC |
1089 | |
1090 | return *root; | |
cac9b346 NC |
1091 | } |
1092 | ||
aeb18a1e | 1093 | /* grab a new thing from the free list, allocating more if necessary */ |
645c22ef | 1094 | |
aeb18a1e | 1095 | STATIC void * |
dd690478 | 1096 | S_new_body(pTHX_ void **arena_root, void **root, size_t size) |
932e9ff9 | 1097 | { |
aeb18a1e | 1098 | void *xpv; |
932e9ff9 | 1099 | LOCK_SV_MUTEX; |
aeb18a1e NC |
1100 | xpv = *root ? *root : S_more_bodies(aTHX_ arena_root, root, size); |
1101 | *root = *(void**)xpv; | |
932e9ff9 | 1102 | UNLOCK_SV_MUTEX; |
dd690478 | 1103 | return xpv; |
932e9ff9 VB |
1104 | } |
1105 | ||
aeb18a1e | 1106 | /* return a thing to the free list */ |
645c22ef | 1107 | |
cb4415b8 NC |
1108 | #define del_body(thing, root) \ |
1109 | STMT_START { \ | |
1110 | LOCK_SV_MUTEX; \ | |
1111 | *(void **)thing = *root; \ | |
1112 | *root = (void*)thing; \ | |
1113 | UNLOCK_SV_MUTEX; \ | |
1114 | } STMT_END | |
932e9ff9 | 1115 | |
aeb18a1e NC |
1116 | /* Conventionally we simply malloc() a big block of memory, then divide it |
1117 | up into lots of the thing that we're allocating. | |
645c22ef | 1118 | |
aeb18a1e NC |
1119 | This macro will expand to call to S_new_body. So for XPVBM (with ithreads), |
1120 | it would become | |
932e9ff9 | 1121 | |
aeb18a1e NC |
1122 | S_new_body(my_perl, (void**)&(my_perl->Ixpvbm_arenaroot), |
1123 | (void**)&(my_perl->Ixpvbm_root), sizeof(XPVBM), 0) | |
1124 | */ | |
645c22ef | 1125 | |
aeb18a1e NC |
1126 | #define new_body(TYPE,lctype) \ |
1127 | S_new_body(aTHX_ (void**)&PL_ ## lctype ## _arenaroot, \ | |
1128 | (void**)&PL_ ## lctype ## _root, \ | |
dd690478 NC |
1129 | sizeof(TYPE)) |
1130 | ||
cb4415b8 NC |
1131 | #define del_body_type(p,TYPE,lctype) \ |
1132 | del_body((void*)p, (void**)&PL_ ## lctype ## _root) | |
aeb18a1e NC |
1133 | |
1134 | /* But for some types, we cheat. The type starts with some members that are | |
1135 | never accessed. So we allocate the substructure, starting at the first used | |
1136 | member, then adjust the pointer back in memory by the size of the bit not | |
1137 | allocated, so it's as if we allocated the full structure. | |
1138 | (But things will all go boom if you write to the part that is "not there", | |
1139 | because you'll be overwriting the last members of the preceding structure | |
1140 | in memory.) | |
1141 | ||
1142 | We calculate the correction using the STRUCT_OFFSET macro. For example, if | |
1143 | xpv_allocated is the same structure as XPV then the two OFFSETs sum to zero, | |
1144 | and the pointer is unchanged. If the allocated structure is smaller (no | |
1145 | initial NV actually allocated) then the net effect is to subtract the size | |
1146 | of the NV from the pointer, to return a new pointer as if an initial NV were | |
1147 | actually allocated. | |
1148 | ||
1149 | This is the same trick as was used for NV and IV bodies. Ironically it | |
1150 | doesn't need to be used for NV bodies any more, because NV is now at the | |
1151 | start of the structure. IV bodies don't need it either, because they are | |
1152 | no longer allocated. */ | |
1153 | ||
1154 | #define new_body_allocated(TYPE,lctype,member) \ | |
dd690478 NC |
1155 | (void*)((char*)S_new_body(aTHX_ (void**)&PL_ ## lctype ## _arenaroot, \ |
1156 | (void**)&PL_ ## lctype ## _root, \ | |
1157 | sizeof(lctype ## _allocated)) - \ | |
1158 | STRUCT_OFFSET(TYPE, member) \ | |
1159 | + STRUCT_OFFSET(lctype ## _allocated, member)) | |
aeb18a1e NC |
1160 | |
1161 | ||
aeb18a1e | 1162 | #define del_body_allocated(p,TYPE,lctype,member) \ |
cb4415b8 NC |
1163 | del_body((void*)((char*)p + STRUCT_OFFSET(TYPE, member) \ |
1164 | - STRUCT_OFFSET(lctype ## _allocated, member)), \ | |
1165 | (void**)&PL_ ## lctype ## _root) | |
932e9ff9 | 1166 | |
7bab3ede MB |
1167 | #define my_safemalloc(s) (void*)safemalloc(s) |
1168 | #define my_safefree(p) safefree((char*)p) | |
463ee0b2 | 1169 | |
d33b2eba | 1170 | #ifdef PURIFY |
463ee0b2 | 1171 | |
d33b2eba GS |
1172 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
1173 | #define del_XNV(p) my_safefree(p) | |
463ee0b2 | 1174 | |
d33b2eba GS |
1175 | #define new_XPV() my_safemalloc(sizeof(XPV)) |
1176 | #define del_XPV(p) my_safefree(p) | |
9b94d1dd | 1177 | |
d33b2eba GS |
1178 | #define new_XPVIV() my_safemalloc(sizeof(XPVIV)) |
1179 | #define del_XPVIV(p) my_safefree(p) | |
932e9ff9 | 1180 | |
d33b2eba GS |
1181 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
1182 | #define del_XPVNV(p) my_safefree(p) | |
932e9ff9 | 1183 | |
d33b2eba GS |
1184 | #define new_XPVCV() my_safemalloc(sizeof(XPVCV)) |
1185 | #define del_XPVCV(p) my_safefree(p) | |
932e9ff9 | 1186 | |
d33b2eba GS |
1187 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1188 | #define del_XPVAV(p) my_safefree(p) | |
1189 | ||
1190 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) | |
1191 | #define del_XPVHV(p) my_safefree(p) | |
1c846c1f | 1192 | |
d33b2eba GS |
1193 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1194 | #define del_XPVMG(p) my_safefree(p) | |
1195 | ||
727879eb NC |
1196 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1197 | #define del_XPVGV(p) my_safefree(p) | |
1198 | ||
d33b2eba GS |
1199 | #define new_XPVLV() my_safemalloc(sizeof(XPVLV)) |
1200 | #define del_XPVLV(p) my_safefree(p) | |
1201 | ||
1202 | #define new_XPVBM() my_safemalloc(sizeof(XPVBM)) | |
1203 | #define del_XPVBM(p) my_safefree(p) | |
1204 | ||
1205 | #else /* !PURIFY */ | |
1206 | ||
aeb18a1e | 1207 | #define new_XNV() new_body(NV, xnv) |
cb4415b8 | 1208 | #define del_XNV(p) del_body_type(p, NV, xnv) |
9b94d1dd | 1209 | |
aeb18a1e NC |
1210 | #define new_XPV() new_body_allocated(XPV, xpv, xpv_cur) |
1211 | #define del_XPV(p) del_body_allocated(p, XPV, xpv, xpv_cur) | |
d33b2eba | 1212 | |
aeb18a1e NC |
1213 | #define new_XPVIV() new_body_allocated(XPVIV, xpviv, xpv_cur) |
1214 | #define del_XPVIV(p) del_body_allocated(p, XPVIV, xpviv, xpv_cur) | |
d33b2eba | 1215 | |
aeb18a1e | 1216 | #define new_XPVNV() new_body(XPVNV, xpvnv) |
cb4415b8 | 1217 | #define del_XPVNV(p) del_body_type(p, XPVNV, xpvnv) |
d33b2eba | 1218 | |
aeb18a1e | 1219 | #define new_XPVCV() new_body(XPVCV, xpvcv) |
cb4415b8 | 1220 | #define del_XPVCV(p) del_body_type(p, XPVCV, xpvcv) |
d33b2eba | 1221 | |
aeb18a1e NC |
1222 | #define new_XPVAV() new_body_allocated(XPVAV, xpvav, xav_fill) |
1223 | #define del_XPVAV(p) del_body_allocated(p, XPVAV, xpvav, xav_fill) | |
d33b2eba | 1224 | |
aeb18a1e NC |
1225 | #define new_XPVHV() new_body_allocated(XPVHV, xpvhv, xhv_fill) |
1226 | #define del_XPVHV(p) del_body_allocated(p, XPVHV, xpvhv, xhv_fill) | |
1c846c1f | 1227 | |
aeb18a1e | 1228 | #define new_XPVMG() new_body(XPVMG, xpvmg) |
cb4415b8 | 1229 | #define del_XPVMG(p) del_body_type(p, XPVMG, xpvmg) |
d33b2eba | 1230 | |
aeb18a1e | 1231 | #define new_XPVGV() new_body(XPVGV, xpvgv) |
cb4415b8 | 1232 | #define del_XPVGV(p) del_body_type(p, XPVGV, xpvgv) |
727879eb | 1233 | |
aeb18a1e | 1234 | #define new_XPVLV() new_body(XPVLV, xpvlv) |
cb4415b8 | 1235 | #define del_XPVLV(p) del_body_type(p, XPVLV, xpvlv) |
d33b2eba | 1236 | |
aeb18a1e | 1237 | #define new_XPVBM() new_body(XPVBM, xpvbm) |
cb4415b8 | 1238 | #define del_XPVBM(p) del_body_type(p, XPVBM, xpvbm) |
d33b2eba GS |
1239 | |
1240 | #endif /* PURIFY */ | |
9b94d1dd | 1241 | |
d33b2eba GS |
1242 | #define new_XPVFM() my_safemalloc(sizeof(XPVFM)) |
1243 | #define del_XPVFM(p) my_safefree(p) | |
1c846c1f | 1244 | |
d33b2eba GS |
1245 | #define new_XPVIO() my_safemalloc(sizeof(XPVIO)) |
1246 | #define del_XPVIO(p) my_safefree(p) | |
8990e307 | 1247 | |
954c1994 GS |
1248 | /* |
1249 | =for apidoc sv_upgrade | |
1250 | ||
ff276b08 | 1251 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 1252 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 1253 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
1254 | |
1255 | =cut | |
1256 | */ | |
1257 | ||
63f97190 | 1258 | void |
864dbfa3 | 1259 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt) |
79072805 | 1260 | { |
9a085840 | 1261 | void** old_body_arena; |
878cc751 | 1262 | size_t old_body_offset; |
4cbc76b1 | 1263 | size_t old_body_length; /* Well, the length to copy. */ |
878cc751 | 1264 | void* old_body; |
16b305e3 NC |
1265 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
1266 | /* If NV 0.0 is store as all bits 0 then Zero() already creates a correct | |
1267 | 0.0 for us. */ | |
4cbc76b1 | 1268 | bool zero_nv = TRUE; |
16b305e3 | 1269 | #endif |
403d36eb NC |
1270 | void* new_body; |
1271 | size_t new_body_length; | |
1272 | size_t new_body_offset; | |
1273 | void** new_body_arena; | |
1274 | void** new_body_arenaroot; | |
53c1dcc0 | 1275 | const U32 old_type = SvTYPE(sv); |
79072805 | 1276 | |
765f542d NC |
1277 | if (mt != SVt_PV && SvIsCOW(sv)) { |
1278 | sv_force_normal_flags(sv, 0); | |
f130fd45 NIS |
1279 | } |
1280 | ||
79072805 | 1281 | if (SvTYPE(sv) == mt) |
63f97190 | 1282 | return; |
79072805 | 1283 | |
f5282e15 | 1284 | if (SvTYPE(sv) > mt) |
921edb34 RGS |
1285 | Perl_croak(aTHX_ "sv_upgrade from type %d down to type %d", |
1286 | (int)SvTYPE(sv), (int)mt); | |
f5282e15 | 1287 | |
d2e56290 | 1288 | |
878cc751 NC |
1289 | old_body = SvANY(sv); |
1290 | old_body_arena = 0; | |
1291 | old_body_offset = 0; | |
4cbc76b1 | 1292 | old_body_length = 0; |
403d36eb NC |
1293 | new_body_offset = 0; |
1294 | new_body_length = ~0; | |
1295 | ||
1296 | /* Copying structures onto other structures that have been neatly zeroed | |
1297 | has a subtle gotcha. Consider XPVMG | |
1298 | ||
1299 | +------+------+------+------+------+-------+-------+ | |
1300 | | NV | CUR | LEN | IV | MAGIC | STASH | | |
1301 | +------+------+------+------+------+-------+-------+ | |
1302 | 0 4 8 12 16 20 24 28 | |
1303 | ||
1304 | where NVs are aligned to 8 bytes, so that sizeof that structure is | |
1305 | actually 32 bytes long, with 4 bytes of padding at the end: | |
1306 | ||
1307 | +------+------+------+------+------+-------+-------+------+ | |
1308 | | NV | CUR | LEN | IV | MAGIC | STASH | ??? | | |
1309 | +------+------+------+------+------+-------+-------+------+ | |
1310 | 0 4 8 12 16 20 24 28 32 | |
1311 | ||
1312 | so what happens if you allocate memory for this structure: | |
1313 | ||
1314 | +------+------+------+------+------+-------+-------+------+------+... | |
1315 | | NV | CUR | LEN | IV | MAGIC | STASH | GP | NAME | | |
1316 | +------+------+------+------+------+-------+-------+------+------+... | |
1317 | 0 4 8 12 16 20 24 28 32 36 | |
1318 | ||
1319 | zero it, then copy sizeof(XPVMG) bytes on top of it? Not quite what you | |
1320 | expect, because you copy the area marked ??? onto GP. Now, ??? may have | |
1321 | started out as zero once, but it's quite possible that it isn't. So now, | |
1322 | rather than a nicely zeroed GP, you have it pointing somewhere random. | |
1323 | Bugs ensue. | |
1324 | ||
1325 | (In fact, GP ends up pointing at a previous GP structure, because the | |
1326 | principle cause of the padding in XPVMG getting garbage is a copy of | |
1327 | sizeof(XPVMG) bytes from a XPVGV structure in sv_unglob) | |
1328 | ||
1329 | So we are careful and work out the size of used parts of all the | |
1330 | structures. */ | |
878cc751 | 1331 | |
79072805 LW |
1332 | switch (SvTYPE(sv)) { |
1333 | case SVt_NULL: | |
79072805 | 1334 | break; |
79072805 | 1335 | case SVt_IV: |
ed6116ce | 1336 | if (mt == SVt_NV) |
463ee0b2 | 1337 | mt = SVt_PVNV; |
ed6116ce LW |
1338 | else if (mt < SVt_PVIV) |
1339 | mt = SVt_PVIV; | |
4cbc76b1 NC |
1340 | old_body_offset = STRUCT_OFFSET(XPVIV, xiv_iv); |
1341 | old_body_length = sizeof(IV); | |
79072805 LW |
1342 | break; |
1343 | case SVt_NV: | |
9a085840 | 1344 | old_body_arena = (void **) &PL_xnv_root; |
4cbc76b1 | 1345 | old_body_length = sizeof(NV); |
16b305e3 | 1346 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
4cbc76b1 | 1347 | zero_nv = FALSE; |
16b305e3 | 1348 | #endif |
ed6116ce | 1349 | if (mt < SVt_PVNV) |
79072805 LW |
1350 | mt = SVt_PVNV; |
1351 | break; | |
ed6116ce | 1352 | case SVt_RV: |
ed6116ce | 1353 | break; |
79072805 | 1354 | case SVt_PV: |
9a085840 | 1355 | old_body_arena = (void **) &PL_xpv_root; |
878cc751 NC |
1356 | old_body_offset = STRUCT_OFFSET(XPV, xpv_cur) |
1357 | - STRUCT_OFFSET(xpv_allocated, xpv_cur); | |
403d36eb NC |
1358 | old_body_length = STRUCT_OFFSET(XPV, xpv_len) |
1359 | + sizeof (((XPV*)SvANY(sv))->xpv_len) | |
1360 | - old_body_offset; | |
748a9306 LW |
1361 | if (mt <= SVt_IV) |
1362 | mt = SVt_PVIV; | |
1363 | else if (mt == SVt_NV) | |
1364 | mt = SVt_PVNV; | |
79072805 LW |
1365 | break; |
1366 | case SVt_PVIV: | |
9a085840 | 1367 | old_body_arena = (void **) &PL_xpviv_root; |
878cc751 NC |
1368 | old_body_offset = STRUCT_OFFSET(XPVIV, xpv_cur) |
1369 | - STRUCT_OFFSET(xpviv_allocated, xpv_cur); | |
403d36eb NC |
1370 | old_body_length = STRUCT_OFFSET(XPVIV, xiv_u) |
1371 | + sizeof (((XPVIV*)SvANY(sv))->xiv_u) | |
1372 | - old_body_offset; | |
79072805 LW |
1373 | break; |
1374 | case SVt_PVNV: | |
9a085840 | 1375 | old_body_arena = (void **) &PL_xpvnv_root; |
403d36eb NC |
1376 | old_body_length = STRUCT_OFFSET(XPVNV, xiv_u) |
1377 | + sizeof (((XPVNV*)SvANY(sv))->xiv_u); | |
16b305e3 | 1378 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
4cbc76b1 | 1379 | zero_nv = FALSE; |
16b305e3 | 1380 | #endif |
79072805 LW |
1381 | break; |
1382 | case SVt_PVMG: | |
0ec50a73 NC |
1383 | /* Because the XPVMG of PL_mess_sv isn't allocated from the arena, |
1384 | there's no way that it can be safely upgraded, because perl.c | |
1385 | expects to Safefree(SvANY(PL_mess_sv)) */ | |
1386 | assert(sv != PL_mess_sv); | |
bce8f412 NC |
1387 | /* This flag bit is used to mean other things in other scalar types. |
1388 | Given that it only has meaning inside the pad, it shouldn't be set | |
1389 | on anything that can get upgraded. */ | |
1390 | assert((SvFLAGS(sv) & SVpad_TYPED) == 0); | |
9a085840 | 1391 | old_body_arena = (void **) &PL_xpvmg_root; |
403d36eb NC |
1392 | old_body_length = STRUCT_OFFSET(XPVMG, xmg_stash) |
1393 | + sizeof (((XPVMG*)SvANY(sv))->xmg_stash); | |
16b305e3 | 1394 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
4cbc76b1 | 1395 | zero_nv = FALSE; |
16b305e3 | 1396 | #endif |
79072805 LW |
1397 | break; |
1398 | default: | |
cea2e8a9 | 1399 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); |
79072805 LW |
1400 | } |
1401 | ||
ffb05e06 NC |
1402 | SvFLAGS(sv) &= ~SVTYPEMASK; |
1403 | SvFLAGS(sv) |= mt; | |
1404 | ||
79072805 LW |
1405 | switch (mt) { |
1406 | case SVt_NULL: | |
cea2e8a9 | 1407 | Perl_croak(aTHX_ "Can't upgrade to undef"); |
79072805 | 1408 | case SVt_IV: |
4cbc76b1 | 1409 | assert(old_type == SVt_NULL); |
339049b0 | 1410 | SvANY(sv) = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
403d36eb | 1411 | SvIV_set(sv, 0); |
85274cbc | 1412 | return; |
79072805 | 1413 | case SVt_NV: |
4cbc76b1 | 1414 | assert(old_type == SVt_NULL); |
79072805 | 1415 | SvANY(sv) = new_XNV(); |
403d36eb | 1416 | SvNV_set(sv, 0); |
85274cbc | 1417 | return; |
ed6116ce | 1418 | case SVt_RV: |
4cbc76b1 | 1419 | assert(old_type == SVt_NULL); |
339049b0 | 1420 | SvANY(sv) = &sv->sv_u.svu_rv; |
403d36eb | 1421 | SvRV_set(sv, 0); |
85274cbc | 1422 | return; |
79072805 LW |
1423 | case SVt_PVHV: |
1424 | SvANY(sv) = new_XPVHV(); | |
463ee0b2 LW |
1425 | HvFILL(sv) = 0; |
1426 | HvMAX(sv) = 0; | |
8aacddc1 | 1427 | HvTOTALKEYS(sv) = 0; |
bd4b1eb5 | 1428 | |
2068cd4d NC |
1429 | goto hv_av_common; |
1430 | ||
1431 | case SVt_PVAV: | |
1432 | SvANY(sv) = new_XPVAV(); | |
1433 | AvMAX(sv) = -1; | |
1434 | AvFILLp(sv) = -1; | |
1435 | AvALLOC(sv) = 0; | |
1436 | AvREAL_only(sv); | |
1437 | ||
1438 | hv_av_common: | |
1439 | /* SVt_NULL isn't the only thing upgraded to AV or HV. | |
1440 | The target created by newSVrv also is, and it can have magic. | |
1441 | However, it never has SvPVX set. | |
1442 | */ | |
1443 | if (old_type >= SVt_RV) { | |
1444 | assert(SvPVX_const(sv) == 0); | |
8bd4d4c5 | 1445 | } |
2068cd4d NC |
1446 | |
1447 | /* Could put this in the else clause below, as PVMG must have SvPVX | |
1448 | 0 already (the assertion above) */ | |
bd4b1eb5 | 1449 | SvPV_set(sv, (char*)0); |
2068cd4d NC |
1450 | |
1451 | if (old_type >= SVt_PVMG) { | |
1452 | SvMAGIC_set(sv, ((XPVMG*)old_body)->xmg_magic); | |
1453 | SvSTASH_set(sv, ((XPVMG*)old_body)->xmg_stash); | |
1454 | } else { | |
1455 | SvMAGIC_set(sv, 0); | |
1456 | SvSTASH_set(sv, 0); | |
1457 | } | |
79072805 | 1458 | break; |
bd4b1eb5 NC |
1459 | |
1460 | case SVt_PVIO: | |
403d36eb NC |
1461 | new_body = new_XPVIO(); |
1462 | new_body_length = sizeof(XPVIO); | |
1463 | goto zero; | |
bd4b1eb5 | 1464 | case SVt_PVFM: |
403d36eb NC |
1465 | new_body = new_XPVFM(); |
1466 | new_body_length = sizeof(XPVFM); | |
1467 | goto zero; | |
1468 | ||
bd4b1eb5 | 1469 | case SVt_PVBM: |
403d36eb NC |
1470 | new_body_length = sizeof(XPVBM); |
1471 | new_body_arena = (void **) &PL_xpvbm_root; | |
1472 | new_body_arenaroot = (void **) &PL_xpvbm_arenaroot; | |
1473 | goto new_body; | |
bd4b1eb5 | 1474 | case SVt_PVGV: |
403d36eb NC |
1475 | new_body_length = sizeof(XPVGV); |
1476 | new_body_arena = (void **) &PL_xpvgv_root; | |
1477 | new_body_arenaroot = (void **) &PL_xpvgv_arenaroot; | |
1478 | goto new_body; | |
79072805 | 1479 | case SVt_PVCV: |
403d36eb NC |
1480 | new_body_length = sizeof(XPVCV); |
1481 | new_body_arena = (void **) &PL_xpvcv_root; | |
1482 | new_body_arenaroot = (void **) &PL_xpvcv_arenaroot; | |
1483 | goto new_body; | |
bd4b1eb5 | 1484 | case SVt_PVLV: |
403d36eb NC |
1485 | new_body_length = sizeof(XPVLV); |
1486 | new_body_arena = (void **) &PL_xpvlv_root; | |
1487 | new_body_arenaroot = (void **) &PL_xpvlv_arenaroot; | |
1488 | goto new_body; | |
1489 | case SVt_PVMG: | |
1490 | new_body_length = sizeof(XPVMG); | |
1491 | new_body_arena = (void **) &PL_xpvmg_root; | |
1492 | new_body_arenaroot = (void **) &PL_xpvmg_arenaroot; | |
1493 | goto new_body; | |
1494 | case SVt_PVNV: | |
1495 | new_body_length = sizeof(XPVNV); | |
1496 | new_body_arena = (void **) &PL_xpvnv_root; | |
1497 | new_body_arenaroot = (void **) &PL_xpvnv_arenaroot; | |
1498 | goto new_body; | |
1499 | case SVt_PVIV: | |
1500 | new_body_offset = STRUCT_OFFSET(XPVIV, xpv_cur) | |
1501 | - STRUCT_OFFSET(xpviv_allocated, xpv_cur); | |
1502 | new_body_length = sizeof(XPVIV) - new_body_offset; | |
1503 | new_body_arena = (void **) &PL_xpviv_root; | |
1504 | new_body_arenaroot = (void **) &PL_xpviv_arenaroot; | |
1505 | /* XXX Is this still needed? Was it ever needed? Surely as there is | |
1506 | no route from NV to PVIV, NOK can never be true */ | |
1507 | if (SvNIOK(sv)) | |
1508 | (void)SvIOK_on(sv); | |
1509 | SvNOK_off(sv); | |
1510 | goto new_body_no_NV; | |
1511 | case SVt_PV: | |
1512 | new_body_offset = STRUCT_OFFSET(XPV, xpv_cur) | |
1513 | - STRUCT_OFFSET(xpv_allocated, xpv_cur); | |
1514 | new_body_length = sizeof(XPV) - new_body_offset; | |
1515 | new_body_arena = (void **) &PL_xpv_root; | |
1516 | new_body_arenaroot = (void **) &PL_xpv_arenaroot; | |
1517 | new_body_no_NV: | |
1518 | /* PV and PVIV don't have an NV slot. */ | |
16b305e3 | 1519 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
403d36eb | 1520 | zero_nv = FALSE; |
16b305e3 | 1521 | #endif |
403d36eb | 1522 | |
16b305e3 NC |
1523 | new_body: |
1524 | assert(new_body_length); | |
403d36eb | 1525 | #ifndef PURIFY |
16b305e3 NC |
1526 | /* This points to the start of the allocated area. */ |
1527 | new_body = S_new_body(aTHX_ new_body_arenaroot, new_body_arena, | |
1528 | new_body_length); | |
403d36eb | 1529 | #else |
16b305e3 NC |
1530 | /* We always allocated the full length item with PURIFY */ |
1531 | new_body_length += new_body_offset; | |
1532 | new_body_offset = 0; | |
1533 | new_body = my_safemalloc(new_body_length); | |
403d36eb NC |
1534 | |
1535 | #endif | |
16b305e3 NC |
1536 | zero: |
1537 | Zero(new_body, new_body_length, char); | |
1538 | new_body = ((char *)new_body) - new_body_offset; | |
1539 | SvANY(sv) = new_body; | |
1540 | ||
1541 | if (old_body_length) { | |
1542 | Copy((char *)old_body + old_body_offset, | |
1543 | (char *)new_body + old_body_offset, | |
1544 | old_body_length, char); | |
1545 | } | |
403d36eb | 1546 | |
16b305e3 NC |
1547 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
1548 | if (zero_nv) | |
1549 | SvNV_set(sv, 0); | |
1550 | #endif | |
403d36eb | 1551 | |
16b305e3 NC |
1552 | if (mt == SVt_PVIO) |
1553 | IoPAGE_LEN(sv) = 60; | |
1554 | if (old_type < SVt_RV) | |
1555 | SvPV_set(sv, 0); | |
8990e307 | 1556 | break; |
403d36eb NC |
1557 | default: |
1558 | Perl_croak(aTHX_ "panic: sv_upgrade to unknown type %lu", mt); | |
8990e307 | 1559 | } |
878cc751 NC |
1560 | |
1561 | ||
1562 | if (old_body_arena) { | |
1563 | #ifdef PURIFY | |
ee6954bb | 1564 | my_safefree(old_body); |
878cc751 | 1565 | #else |
cb4415b8 NC |
1566 | del_body((void*)((char*)old_body + old_body_offset), |
1567 | old_body_arena); | |
878cc751 | 1568 | #endif |
2068cd4d | 1569 | } |
79072805 LW |
1570 | } |
1571 | ||
645c22ef DM |
1572 | /* |
1573 | =for apidoc sv_backoff | |
1574 | ||
1575 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
1576 | wrapper instead. | |
1577 | ||
1578 | =cut | |
1579 | */ | |
1580 | ||
79072805 | 1581 | int |
864dbfa3 | 1582 | Perl_sv_backoff(pTHX_ register SV *sv) |
79072805 LW |
1583 | { |
1584 | assert(SvOOK(sv)); | |
b79f7545 NC |
1585 | assert(SvTYPE(sv) != SVt_PVHV); |
1586 | assert(SvTYPE(sv) != SVt_PVAV); | |
463ee0b2 | 1587 | if (SvIVX(sv)) { |
53c1dcc0 | 1588 | const char * const s = SvPVX_const(sv); |
b162af07 | 1589 | SvLEN_set(sv, SvLEN(sv) + SvIVX(sv)); |
f880fe2f | 1590 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); |
79072805 | 1591 | SvIV_set(sv, 0); |
463ee0b2 | 1592 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
79072805 LW |
1593 | } |
1594 | SvFLAGS(sv) &= ~SVf_OOK; | |
a0d0e21e | 1595 | return 0; |
79072805 LW |
1596 | } |
1597 | ||
954c1994 GS |
1598 | /* |
1599 | =for apidoc sv_grow | |
1600 | ||
645c22ef DM |
1601 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
1602 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
1603 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
1604 | |
1605 | =cut | |
1606 | */ | |
1607 | ||
79072805 | 1608 | char * |
864dbfa3 | 1609 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) |
79072805 LW |
1610 | { |
1611 | register char *s; | |
1612 | ||
55497cff | 1613 | #ifdef HAS_64K_LIMIT |
79072805 | 1614 | if (newlen >= 0x10000) { |
1d7c1841 GS |
1615 | PerlIO_printf(Perl_debug_log, |
1616 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
79072805 LW |
1617 | my_exit(1); |
1618 | } | |
55497cff | 1619 | #endif /* HAS_64K_LIMIT */ |
a0d0e21e LW |
1620 | if (SvROK(sv)) |
1621 | sv_unref(sv); | |
79072805 LW |
1622 | if (SvTYPE(sv) < SVt_PV) { |
1623 | sv_upgrade(sv, SVt_PV); | |
93524f2b | 1624 | s = SvPVX_mutable(sv); |
79072805 LW |
1625 | } |
1626 | else if (SvOOK(sv)) { /* pv is offset? */ | |
1627 | sv_backoff(sv); | |
93524f2b | 1628 | s = SvPVX_mutable(sv); |
79072805 LW |
1629 | if (newlen > SvLEN(sv)) |
1630 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
c6f8c383 GA |
1631 | #ifdef HAS_64K_LIMIT |
1632 | if (newlen >= 0x10000) | |
1633 | newlen = 0xFFFF; | |
1634 | #endif | |
79072805 | 1635 | } |
bc44a8a2 | 1636 | else |
4d84ee25 | 1637 | s = SvPVX_mutable(sv); |
54f0641b | 1638 | |
79072805 | 1639 | if (newlen > SvLEN(sv)) { /* need more room? */ |
7a9b70e9 | 1640 | newlen = PERL_STRLEN_ROUNDUP(newlen); |
8d6dde3e | 1641 | if (SvLEN(sv) && s) { |
7bab3ede | 1642 | #ifdef MYMALLOC |
93524f2b | 1643 | const STRLEN l = malloced_size((void*)SvPVX_const(sv)); |
8d6dde3e IZ |
1644 | if (newlen <= l) { |
1645 | SvLEN_set(sv, l); | |
1646 | return s; | |
1647 | } else | |
c70c8a0a | 1648 | #endif |
1936d2a7 | 1649 | s = saferealloc(s, newlen); |
8d6dde3e | 1650 | } |
bfed75c6 | 1651 | else { |
1936d2a7 | 1652 | s = safemalloc(newlen); |
3f7c398e SP |
1653 | if (SvPVX_const(sv) && SvCUR(sv)) { |
1654 | Move(SvPVX_const(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); | |
40565179 | 1655 | } |
4e83176d | 1656 | } |
79072805 | 1657 | SvPV_set(sv, s); |
e1ec3a88 | 1658 | SvLEN_set(sv, newlen); |
79072805 LW |
1659 | } |
1660 | return s; | |
1661 | } | |
1662 | ||
954c1994 GS |
1663 | /* |
1664 | =for apidoc sv_setiv | |
1665 | ||
645c22ef DM |
1666 | Copies an integer into the given SV, upgrading first if necessary. |
1667 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
1668 | |
1669 | =cut | |
1670 | */ | |
1671 | ||
79072805 | 1672 | void |
864dbfa3 | 1673 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) |
79072805 | 1674 | { |
765f542d | 1675 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 LW |
1676 | switch (SvTYPE(sv)) { |
1677 | case SVt_NULL: | |
79072805 | 1678 | sv_upgrade(sv, SVt_IV); |
463ee0b2 LW |
1679 | break; |
1680 | case SVt_NV: | |
1681 | sv_upgrade(sv, SVt_PVNV); | |
1682 | break; | |
ed6116ce | 1683 | case SVt_RV: |
463ee0b2 | 1684 | case SVt_PV: |
79072805 | 1685 | sv_upgrade(sv, SVt_PVIV); |
463ee0b2 | 1686 | break; |
a0d0e21e LW |
1687 | |
1688 | case SVt_PVGV: | |
a0d0e21e LW |
1689 | case SVt_PVAV: |
1690 | case SVt_PVHV: | |
1691 | case SVt_PVCV: | |
1692 | case SVt_PVFM: | |
1693 | case SVt_PVIO: | |
411caa50 | 1694 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), |
53e06cf0 | 1695 | OP_DESC(PL_op)); |
463ee0b2 | 1696 | } |
a0d0e21e | 1697 | (void)SvIOK_only(sv); /* validate number */ |
45977657 | 1698 | SvIV_set(sv, i); |
463ee0b2 | 1699 | SvTAINT(sv); |
79072805 LW |
1700 | } |
1701 | ||
954c1994 GS |
1702 | /* |
1703 | =for apidoc sv_setiv_mg | |
1704 | ||
1705 | Like C<sv_setiv>, but also handles 'set' magic. | |
1706 | ||
1707 | =cut | |
1708 | */ | |
1709 | ||
79072805 | 1710 | void |
864dbfa3 | 1711 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) |
ef50df4b GS |
1712 | { |
1713 | sv_setiv(sv,i); | |
1714 | SvSETMAGIC(sv); | |
1715 | } | |
1716 | ||
954c1994 GS |
1717 | /* |
1718 | =for apidoc sv_setuv | |
1719 | ||
645c22ef DM |
1720 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
1721 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
1722 | |
1723 | =cut | |
1724 | */ | |
1725 | ||
ef50df4b | 1726 | void |
864dbfa3 | 1727 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) |
55497cff | 1728 | { |
55ada374 NC |
1729 | /* With these two if statements: |
1730 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 1731 | |
55ada374 NC |
1732 | without |
1733 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 1734 | |
55ada374 NC |
1735 | If you wish to remove them, please benchmark to see what the effect is |
1736 | */ | |
28e5dec8 JH |
1737 | if (u <= (UV)IV_MAX) { |
1738 | sv_setiv(sv, (IV)u); | |
1739 | return; | |
1740 | } | |
25da4f38 IZ |
1741 | sv_setiv(sv, 0); |
1742 | SvIsUV_on(sv); | |
607fa7f2 | 1743 | SvUV_set(sv, u); |
55497cff | 1744 | } |
1745 | ||
954c1994 GS |
1746 | /* |
1747 | =for apidoc sv_setuv_mg | |
1748 | ||
1749 | Like C<sv_setuv>, but also handles 'set' magic. | |
1750 | ||
1751 | =cut | |
1752 | */ | |
1753 | ||
55497cff | 1754 | void |
864dbfa3 | 1755 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) |
ef50df4b | 1756 | { |
55ada374 NC |
1757 | /* With these two if statements: |
1758 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 1759 | |
55ada374 NC |
1760 | without |
1761 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 1762 | |
55ada374 NC |
1763 | If you wish to remove them, please benchmark to see what the effect is |
1764 | */ | |
28e5dec8 JH |
1765 | if (u <= (UV)IV_MAX) { |
1766 | sv_setiv(sv, (IV)u); | |
1767 | } else { | |
1768 | sv_setiv(sv, 0); | |
1769 | SvIsUV_on(sv); | |
1770 | sv_setuv(sv,u); | |
1771 | } | |
ef50df4b GS |
1772 | SvSETMAGIC(sv); |
1773 | } | |
1774 | ||
954c1994 GS |
1775 | /* |
1776 | =for apidoc sv_setnv | |
1777 | ||
645c22ef DM |
1778 | Copies a double into the given SV, upgrading first if necessary. |
1779 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
1780 | |
1781 | =cut | |
1782 | */ | |
1783 | ||
ef50df4b | 1784 | void |
65202027 | 1785 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 1786 | { |
765f542d | 1787 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
a0d0e21e LW |
1788 | switch (SvTYPE(sv)) { |
1789 | case SVt_NULL: | |
1790 | case SVt_IV: | |
79072805 | 1791 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 1792 | break; |
a0d0e21e LW |
1793 | case SVt_RV: |
1794 | case SVt_PV: | |
1795 | case SVt_PVIV: | |
79072805 | 1796 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e | 1797 | break; |
827b7e14 | 1798 | |
a0d0e21e | 1799 | case SVt_PVGV: |
a0d0e21e LW |
1800 | case SVt_PVAV: |
1801 | case SVt_PVHV: | |
1802 | case SVt_PVCV: | |
1803 | case SVt_PVFM: | |
1804 | case SVt_PVIO: | |
411caa50 | 1805 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), |
53e06cf0 | 1806 | OP_NAME(PL_op)); |
79072805 | 1807 | } |
9d6ce603 | 1808 | SvNV_set(sv, num); |
a0d0e21e | 1809 | (void)SvNOK_only(sv); /* validate number */ |
463ee0b2 | 1810 | SvTAINT(sv); |
79072805 LW |
1811 | } |
1812 | ||
954c1994 GS |
1813 | /* |
1814 | =for apidoc sv_setnv_mg | |
1815 | ||
1816 | Like C<sv_setnv>, but also handles 'set' magic. | |
1817 | ||
1818 | =cut | |
1819 | */ | |
1820 | ||
ef50df4b | 1821 | void |
65202027 | 1822 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) |
ef50df4b GS |
1823 | { |
1824 | sv_setnv(sv,num); | |
1825 | SvSETMAGIC(sv); | |
1826 | } | |
1827 | ||
645c22ef DM |
1828 | /* Print an "isn't numeric" warning, using a cleaned-up, |
1829 | * printable version of the offending string | |
1830 | */ | |
1831 | ||
76e3520e | 1832 | STATIC void |
cea2e8a9 | 1833 | S_not_a_number(pTHX_ SV *sv) |
a0d0e21e | 1834 | { |
94463019 JH |
1835 | SV *dsv; |
1836 | char tmpbuf[64]; | |
1b6737cc | 1837 | const char *pv; |
94463019 JH |
1838 | |
1839 | if (DO_UTF8(sv)) { | |
d0043bd1 | 1840 | dsv = sv_2mortal(newSVpvn("", 0)); |
94463019 JH |
1841 | pv = sv_uni_display(dsv, sv, 10, 0); |
1842 | } else { | |
1843 | char *d = tmpbuf; | |
1844 | char *limit = tmpbuf + sizeof(tmpbuf) - 8; | |
1845 | /* each *s can expand to 4 chars + "...\0", | |
1846 | i.e. need room for 8 chars */ | |
ecdeb87c | 1847 | |
e62f0680 NC |
1848 | const char *s, *end; |
1849 | for (s = SvPVX_const(sv), end = s + SvCUR(sv); s < end && d < limit; | |
1850 | s++) { | |
94463019 JH |
1851 | int ch = *s & 0xFF; |
1852 | if (ch & 128 && !isPRINT_LC(ch)) { | |
1853 | *d++ = 'M'; | |
1854 | *d++ = '-'; | |
1855 | ch &= 127; | |
1856 | } | |
1857 | if (ch == '\n') { | |
1858 | *d++ = '\\'; | |
1859 | *d++ = 'n'; | |
1860 | } | |
1861 | else if (ch == '\r') { | |
1862 | *d++ = '\\'; | |
1863 | *d++ = 'r'; | |
1864 | } | |
1865 | else if (ch == '\f') { | |
1866 | *d++ = '\\'; | |
1867 | *d++ = 'f'; | |
1868 | } | |
1869 | else if (ch == '\\') { | |
1870 | *d++ = '\\'; | |
1871 | *d++ = '\\'; | |
1872 | } | |
1873 | else if (ch == '\0') { | |
1874 | *d++ = '\\'; | |
1875 | *d++ = '0'; | |
1876 | } | |
1877 | else if (isPRINT_LC(ch)) | |
1878 | *d++ = ch; | |
1879 | else { | |
1880 | *d++ = '^'; | |
1881 | *d++ = toCTRL(ch); | |
1882 | } | |
1883 | } | |
1884 | if (s < end) { | |
1885 | *d++ = '.'; | |
1886 | *d++ = '.'; | |
1887 | *d++ = '.'; | |
1888 | } | |
1889 | *d = '\0'; | |
1890 | pv = tmpbuf; | |
a0d0e21e | 1891 | } |
a0d0e21e | 1892 | |
533c011a | 1893 | if (PL_op) |
9014280d | 1894 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
1895 | "Argument \"%s\" isn't numeric in %s", pv, |
1896 | OP_DESC(PL_op)); | |
a0d0e21e | 1897 | else |
9014280d | 1898 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 1899 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
1900 | } |
1901 | ||
c2988b20 NC |
1902 | /* |
1903 | =for apidoc looks_like_number | |
1904 | ||
645c22ef DM |
1905 | Test if the content of an SV looks like a number (or is a number). |
1906 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
1907 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
1908 | |
1909 | =cut | |
1910 | */ | |
1911 | ||
1912 | I32 | |
1913 | Perl_looks_like_number(pTHX_ SV *sv) | |
1914 | { | |
a3b680e6 | 1915 | register const char *sbegin; |
c2988b20 NC |
1916 | STRLEN len; |
1917 | ||
1918 | if (SvPOK(sv)) { | |
3f7c398e | 1919 | sbegin = SvPVX_const(sv); |
c2988b20 NC |
1920 | len = SvCUR(sv); |
1921 | } | |
1922 | else if (SvPOKp(sv)) | |
83003860 | 1923 | sbegin = SvPV_const(sv, len); |
c2988b20 | 1924 | else |
e0ab1c0e | 1925 | return SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK); |
c2988b20 NC |
1926 | return grok_number(sbegin, len, NULL); |
1927 | } | |
25da4f38 IZ |
1928 | |
1929 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
1930 | until proven guilty, assume that things are not that bad... */ | |
1931 | ||
645c22ef DM |
1932 | /* |
1933 | NV_PRESERVES_UV: | |
1934 | ||
1935 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
1936 | an IV (an assumption perl has been based on to date) it becomes necessary |
1937 | to remove the assumption that the NV always carries enough precision to | |
1938 | recreate the IV whenever needed, and that the NV is the canonical form. | |
1939 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 1940 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
1941 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
1942 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
1943 | conversion where precision was lost and IV/UV/NV slots that have a | |
1944 | valid conversion which has lost no precision | |
645c22ef | 1945 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
1946 | would lose precision, the precise conversion (or differently |
1947 | imprecise conversion) is also performed and cached, to prevent | |
1948 | requests for different numeric formats on the same SV causing | |
1949 | lossy conversion chains. (lossless conversion chains are perfectly | |
1950 | acceptable (still)) | |
1951 | ||
1952 | ||
1953 | flags are used: | |
1954 | SvIOKp is true if the IV slot contains a valid value | |
1955 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
1956 | SvNOKp is true if the NV slot contains a valid value | |
1957 | SvNOK is true only if the NV value is accurate | |
1958 | ||
1959 | so | |
645c22ef | 1960 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
1961 | IV(or UV) would lose accuracy over a direct conversion from PV to |
1962 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
1963 | SV as IOK NOKp (ie not NOK). | |
1964 | ||
645c22ef | 1965 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
1966 | NV would lose accuracy over a direct conversion from PV to NV. If it |
1967 | would, cache both conversions, flag similarly. | |
1968 | ||
1969 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
1970 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
1971 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
1972 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 1973 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 1974 | |
645c22ef DM |
1975 | The benefit of this is that operations such as pp_add know that if |
1976 | SvIOK is true for both left and right operands, then integer addition | |
1977 | can be used instead of floating point (for cases where the result won't | |
1978 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
1979 | loss of precision compared with integer addition. |
1980 | ||
1981 | * making IV and NV equal status should make maths accurate on 64 bit | |
1982 | platforms | |
1983 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 1984 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
1985 | looking for SvIOK and checking for overflow will not outweigh the |
1986 | fp to integer speedup) | |
1987 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
1988 | values, as the change from SvIOK to SvIOKp will cause a call into | |
1989 | sv_2iv each time rather than a macro access direct to the IV slot | |
1990 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 1991 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
1992 | |
1993 | #################################################################### | |
645c22ef DM |
1994 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
1995 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
1996 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
1997 | #################################################################### |
1998 | ||
645c22ef | 1999 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
2000 | performance ratio. |
2001 | */ | |
2002 | ||
2003 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
2004 | # define IS_NUMBER_UNDERFLOW_IV 1 |
2005 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
2006 | # define IS_NUMBER_IV_AND_UV 2 | |
2007 | # define IS_NUMBER_OVERFLOW_IV 4 | |
2008 | # define IS_NUMBER_OVERFLOW_UV 5 | |
2009 | ||
2010 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
2011 | |
2012 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
2013 | STATIC int | |
645c22ef | 2014 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 2015 | { |
3f7c398e | 2016 | 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 |
2017 | if (SvNVX(sv) < (NV)IV_MIN) { |
2018 | (void)SvIOKp_on(sv); | |
2019 | (void)SvNOK_on(sv); | |
45977657 | 2020 | SvIV_set(sv, IV_MIN); |
28e5dec8 JH |
2021 | return IS_NUMBER_UNDERFLOW_IV; |
2022 | } | |
2023 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2024 | (void)SvIOKp_on(sv); | |
2025 | (void)SvNOK_on(sv); | |
2026 | SvIsUV_on(sv); | |
607fa7f2 | 2027 | SvUV_set(sv, UV_MAX); |
28e5dec8 JH |
2028 | return IS_NUMBER_OVERFLOW_UV; |
2029 | } | |
c2988b20 NC |
2030 | (void)SvIOKp_on(sv); |
2031 | (void)SvNOK_on(sv); | |
2032 | /* Can't use strtol etc to convert this string. (See truth table in | |
2033 | sv_2iv */ | |
2034 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
45977657 | 2035 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2036 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2037 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
2038 | } else { | |
2039 | /* Integer is imprecise. NOK, IOKp */ | |
2040 | } | |
2041 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
2042 | } | |
2043 | SvIsUV_on(sv); | |
607fa7f2 | 2044 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2045 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { |
2046 | if (SvUVX(sv) == UV_MAX) { | |
2047 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
2048 | possibly be preserved by NV. Hence, it must be overflow. | |
2049 | NOK, IOKp */ | |
2050 | return IS_NUMBER_OVERFLOW_UV; | |
2051 | } | |
2052 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
2053 | } else { | |
2054 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 2055 | } |
c2988b20 | 2056 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 2057 | } |
645c22ef DM |
2058 | #endif /* !NV_PRESERVES_UV*/ |
2059 | ||
891f9566 YST |
2060 | /* sv_2iv() is now a macro using Perl_sv_2iv_flags(); |
2061 | * this function provided for binary compatibility only | |
2062 | */ | |
2063 | ||
2064 | IV | |
2065 | Perl_sv_2iv(pTHX_ register SV *sv) | |
2066 | { | |
2067 | return sv_2iv_flags(sv, SV_GMAGIC); | |
2068 | } | |
2069 | ||
645c22ef | 2070 | /* |
891f9566 | 2071 | =for apidoc sv_2iv_flags |
645c22ef | 2072 | |
891f9566 YST |
2073 | Return the integer value of an SV, doing any necessary string |
2074 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. | |
2075 | Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
645c22ef DM |
2076 | |
2077 | =cut | |
2078 | */ | |
28e5dec8 | 2079 | |
a0d0e21e | 2080 | IV |
891f9566 | 2081 | Perl_sv_2iv_flags(pTHX_ register SV *sv, I32 flags) |
79072805 LW |
2082 | { |
2083 | if (!sv) | |
2084 | return 0; | |
8990e307 | 2085 | if (SvGMAGICAL(sv)) { |
891f9566 YST |
2086 | if (flags & SV_GMAGIC) |
2087 | mg_get(sv); | |
463ee0b2 LW |
2088 | if (SvIOKp(sv)) |
2089 | return SvIVX(sv); | |
748a9306 | 2090 | if (SvNOKp(sv)) { |
25da4f38 | 2091 | return I_V(SvNVX(sv)); |
748a9306 | 2092 | } |
36477c24 | 2093 | if (SvPOKp(sv) && SvLEN(sv)) |
2094 | return asIV(sv); | |
3fe9a6f1 | 2095 | if (!SvROK(sv)) { |
d008e5eb | 2096 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2097 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2098 | report_uninit(sv); |
c6ee37c5 | 2099 | } |
36477c24 | 2100 | return 0; |
3fe9a6f1 | 2101 | } |
463ee0b2 | 2102 | } |
ed6116ce | 2103 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2104 | if (SvROK(sv)) { |
a0d0e21e | 2105 | SV* tmpstr; |
1554e226 | 2106 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2107 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2108 | return SvIV(tmpstr); |
56431972 | 2109 | return PTR2IV(SvRV(sv)); |
a0d0e21e | 2110 | } |
765f542d NC |
2111 | if (SvIsCOW(sv)) { |
2112 | sv_force_normal_flags(sv, 0); | |
47deb5e7 | 2113 | } |
0336b60e | 2114 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2115 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2116 | report_uninit(sv); |
ed6116ce LW |
2117 | return 0; |
2118 | } | |
79072805 | 2119 | } |
25da4f38 IZ |
2120 | if (SvIOKp(sv)) { |
2121 | if (SvIsUV(sv)) { | |
2122 | return (IV)(SvUVX(sv)); | |
2123 | } | |
2124 | else { | |
2125 | return SvIVX(sv); | |
2126 | } | |
463ee0b2 | 2127 | } |
748a9306 | 2128 | if (SvNOKp(sv)) { |
28e5dec8 JH |
2129 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2130 | * without also getting a cached IV/UV from it at the same time | |
2131 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2132 | * IV or UV at same time to avoid this. NWC */ | |
25da4f38 IZ |
2133 | |
2134 | if (SvTYPE(sv) == SVt_NV) | |
2135 | sv_upgrade(sv, SVt_PVNV); | |
2136 | ||
28e5dec8 JH |
2137 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
2138 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
2139 | certainly cast into the IV range at IV_MAX, whereas the correct | |
2140 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
2141 | cases go to UV */ | |
2142 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2143 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2144 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2145 | #ifndef NV_PRESERVES_UV | |
2146 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2147 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2148 | /* Don't flag it as "accurately an integer" if the number | |
2149 | came from a (by definition imprecise) NV operation, and | |
2150 | we're outside the range of NV integer precision */ | |
2151 | #endif | |
2152 | ) { | |
2153 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2154 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2155 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2156 | PTR2UV(sv), |
2157 | SvNVX(sv), | |
2158 | SvIVX(sv))); | |
2159 | ||
2160 | } else { | |
2161 | /* IV not precise. No need to convert from PV, as NV | |
2162 | conversion would already have cached IV if it detected | |
2163 | that PV->IV would be better than PV->NV->IV | |
2164 | flags already correct - don't set public IOK. */ | |
2165 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2166 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2167 | PTR2UV(sv), |
2168 | SvNVX(sv), | |
2169 | SvIVX(sv))); | |
2170 | } | |
2171 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2172 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2173 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2174 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2175 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2176 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2177 | Hopefully for 2s complement IV_MIN is something like | |
2178 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2179 | } |
25da4f38 | 2180 | else { |
607fa7f2 | 2181 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2182 | if ( |
2183 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2184 | #ifndef NV_PRESERVES_UV | |
2185 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2186 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2187 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2188 | /* Don't flag it as "accurately an integer" if the number | |
2189 | came from a (by definition imprecise) NV operation, and | |
2190 | we're outside the range of NV integer precision */ | |
2191 | #endif | |
2192 | ) | |
2193 | SvIOK_on(sv); | |
25da4f38 IZ |
2194 | SvIsUV_on(sv); |
2195 | ret_iv_max: | |
1c846c1f | 2196 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 2197 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 2198 | PTR2UV(sv), |
57def98f JH |
2199 | SvUVX(sv), |
2200 | SvUVX(sv))); | |
25da4f38 IZ |
2201 | return (IV)SvUVX(sv); |
2202 | } | |
748a9306 LW |
2203 | } |
2204 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 2205 | UV value; |
504618e9 | 2206 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
25da4f38 IZ |
2207 | /* We want to avoid a possible problem when we cache an IV which |
2208 | may be later translated to an NV, and the resulting NV is not | |
c2988b20 NC |
2209 | the same as the direct translation of the initial string |
2210 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
2211 | be careful to ensure that the value with the .456 is around if the | |
2212 | NV value is requested in the future). | |
1c846c1f | 2213 | |
25da4f38 IZ |
2214 | This means that if we cache such an IV, we need to cache the |
2215 | NV as well. Moreover, we trade speed for space, and do not | |
28e5dec8 | 2216 | cache the NV if we are sure it's not needed. |
25da4f38 | 2217 | */ |
16b7a9a4 | 2218 | |
c2988b20 NC |
2219 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2220 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2221 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2222 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2223 | if (SvTYPE(sv) < SVt_PVIV) |
2224 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2225 | (void)SvIOK_on(sv); |
c2988b20 NC |
2226 | } else if (SvTYPE(sv) < SVt_PVNV) |
2227 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2228 | |
c2988b20 NC |
2229 | /* If NV preserves UV then we only use the UV value if we know that |
2230 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2231 | then the value returned may have more precision than atof() will | |
2232 | return, even though value isn't perfectly accurate. */ | |
2233 | if ((numtype & (IS_NUMBER_IN_UV | |
2234 | #ifdef NV_PRESERVES_UV | |
2235 | | IS_NUMBER_NOT_INT | |
2236 | #endif | |
2237 | )) == IS_NUMBER_IN_UV) { | |
2238 | /* This won't turn off the public IOK flag if it was set above */ | |
2239 | (void)SvIOKp_on(sv); | |
2240 | ||
2241 | if (!(numtype & IS_NUMBER_NEG)) { | |
2242 | /* positive */; | |
2243 | if (value <= (UV)IV_MAX) { | |
45977657 | 2244 | SvIV_set(sv, (IV)value); |
c2988b20 | 2245 | } else { |
607fa7f2 | 2246 | SvUV_set(sv, value); |
c2988b20 NC |
2247 | SvIsUV_on(sv); |
2248 | } | |
2249 | } else { | |
2250 | /* 2s complement assumption */ | |
2251 | if (value <= (UV)IV_MIN) { | |
45977657 | 2252 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2253 | } else { |
2254 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2255 | I'm assuming it will be rare. */ |
c2988b20 NC |
2256 | if (SvTYPE(sv) < SVt_PVNV) |
2257 | sv_upgrade(sv, SVt_PVNV); | |
2258 | SvNOK_on(sv); | |
2259 | SvIOK_off(sv); | |
2260 | SvIOKp_on(sv); | |
9d6ce603 | 2261 | SvNV_set(sv, -(NV)value); |
45977657 | 2262 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2263 | } |
2264 | } | |
2265 | } | |
2266 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2267 | will be in the previous block to set the IV slot, and the next | |
2268 | block to set the NV slot. So no else here. */ | |
2269 | ||
2270 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2271 | != IS_NUMBER_IN_UV) { | |
2272 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
3f7c398e | 2273 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 | 2274 | |
c2988b20 NC |
2275 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2276 | not_a_number(sv); | |
28e5dec8 | 2277 | |
65202027 | 2278 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2279 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2280 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2281 | #else |
1779d84d | 2282 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2283 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2284 | #endif |
28e5dec8 JH |
2285 | |
2286 | ||
2287 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2288 | (void)SvIOKp_on(sv); |
2289 | (void)SvNOK_on(sv); | |
2290 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2291 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2292 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2293 | SvIOK_on(sv); | |
28e5dec8 | 2294 | } else { |
c2988b20 NC |
2295 | /* Integer is imprecise. NOK, IOKp */ |
2296 | } | |
2297 | /* UV will not work better than IV */ | |
2298 | } else { | |
2299 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2300 | SvIsUV_on(sv); | |
2301 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 2302 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
2303 | SvIsUV_on(sv); |
2304 | } else { | |
607fa7f2 | 2305 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2306 | /* 0xFFFFFFFFFFFFFFFF not an issue in here */ |
2307 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2308 | SvIOK_on(sv); | |
28e5dec8 JH |
2309 | SvIsUV_on(sv); |
2310 | } else { | |
c2988b20 NC |
2311 | /* Integer is imprecise. NOK, IOKp, is UV */ |
2312 | SvIsUV_on(sv); | |
28e5dec8 | 2313 | } |
28e5dec8 | 2314 | } |
c2988b20 NC |
2315 | goto ret_iv_max; |
2316 | } | |
28e5dec8 | 2317 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2318 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2319 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2320 | /* The IV slot will have been set from value returned by | |
2321 | grok_number above. The NV slot has just been set using | |
2322 | Atof. */ | |
560b0c46 | 2323 | SvNOK_on(sv); |
c2988b20 NC |
2324 | assert (SvIOKp(sv)); |
2325 | } else { | |
2326 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2327 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2328 | /* Small enough to preserve all bits. */ | |
2329 | (void)SvIOKp_on(sv); | |
2330 | SvNOK_on(sv); | |
45977657 | 2331 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2332 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
2333 | SvIOK_on(sv); | |
2334 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2335 | this NV is in the preserved range, therefore: */ | |
2336 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2337 | < (UV)IV_MAX)) { | |
32fdb065 | 2338 | 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 |
2339 | } |
2340 | } else { | |
2341 | /* IN_UV NOT_INT | |
2342 | 0 0 already failed to read UV. | |
2343 | 0 1 already failed to read UV. | |
2344 | 1 0 you won't get here in this case. IV/UV | |
2345 | slot set, public IOK, Atof() unneeded. | |
2346 | 1 1 already read UV. | |
2347 | so there's no point in sv_2iuv_non_preserve() attempting | |
2348 | to use atol, strtol, strtoul etc. */ | |
2349 | if (sv_2iuv_non_preserve (sv, numtype) | |
2350 | >= IS_NUMBER_OVERFLOW_IV) | |
2351 | goto ret_iv_max; | |
2352 | } | |
2353 | } | |
28e5dec8 | 2354 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2355 | } |
28e5dec8 | 2356 | } else { |
599cee73 | 2357 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 2358 | report_uninit(sv); |
25da4f38 IZ |
2359 | if (SvTYPE(sv) < SVt_IV) |
2360 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2361 | sv_upgrade(sv, SVt_IV); | |
a0d0e21e | 2362 | return 0; |
79072805 | 2363 | } |
1d7c1841 GS |
2364 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2365 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2366 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2367 | } |
2368 | ||
891f9566 YST |
2369 | /* sv_2uv() is now a macro using Perl_sv_2uv_flags(); |
2370 | * this function provided for binary compatibility only | |
2371 | */ | |
2372 | ||
2373 | UV | |
2374 | Perl_sv_2uv(pTHX_ register SV *sv) | |
2375 | { | |
2376 | return sv_2uv_flags(sv, SV_GMAGIC); | |
2377 | } | |
2378 | ||
645c22ef | 2379 | /* |
891f9566 | 2380 | =for apidoc sv_2uv_flags |
645c22ef DM |
2381 | |
2382 | Return the unsigned integer value of an SV, doing any necessary string | |
891f9566 YST |
2383 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. |
2384 | Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros. | |
645c22ef DM |
2385 | |
2386 | =cut | |
2387 | */ | |
2388 | ||
ff68c719 | 2389 | UV |
891f9566 | 2390 | Perl_sv_2uv_flags(pTHX_ register SV *sv, I32 flags) |
ff68c719 | 2391 | { |
2392 | if (!sv) | |
2393 | return 0; | |
2394 | if (SvGMAGICAL(sv)) { | |
891f9566 YST |
2395 | if (flags & SV_GMAGIC) |
2396 | mg_get(sv); | |
ff68c719 | 2397 | if (SvIOKp(sv)) |
2398 | return SvUVX(sv); | |
2399 | if (SvNOKp(sv)) | |
2400 | return U_V(SvNVX(sv)); | |
36477c24 | 2401 | if (SvPOKp(sv) && SvLEN(sv)) |
2402 | return asUV(sv); | |
3fe9a6f1 | 2403 | if (!SvROK(sv)) { |
d008e5eb | 2404 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2405 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2406 | report_uninit(sv); |
c6ee37c5 | 2407 | } |
36477c24 | 2408 | return 0; |
3fe9a6f1 | 2409 | } |
ff68c719 | 2410 | } |
2411 | if (SvTHINKFIRST(sv)) { | |
2412 | if (SvROK(sv)) { | |
ff68c719 | 2413 | SV* tmpstr; |
1554e226 | 2414 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2415 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2416 | return SvUV(tmpstr); |
56431972 | 2417 | return PTR2UV(SvRV(sv)); |
ff68c719 | 2418 | } |
765f542d NC |
2419 | if (SvIsCOW(sv)) { |
2420 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2421 | } |
0336b60e | 2422 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2423 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2424 | report_uninit(sv); |
ff68c719 | 2425 | return 0; |
2426 | } | |
2427 | } | |
25da4f38 IZ |
2428 | if (SvIOKp(sv)) { |
2429 | if (SvIsUV(sv)) { | |
2430 | return SvUVX(sv); | |
2431 | } | |
2432 | else { | |
2433 | return (UV)SvIVX(sv); | |
2434 | } | |
ff68c719 | 2435 | } |
2436 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
2437 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2438 | * without also getting a cached IV/UV from it at the same time | |
2439 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2440 | * IV or UV at same time to avoid this. */ | |
2441 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
2442 | ||
25da4f38 IZ |
2443 | if (SvTYPE(sv) == SVt_NV) |
2444 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 JH |
2445 | |
2446 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ | |
2447 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2448 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2449 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2450 | #ifndef NV_PRESERVES_UV | |
2451 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2452 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2453 | /* Don't flag it as "accurately an integer" if the number | |
2454 | came from a (by definition imprecise) NV operation, and | |
2455 | we're outside the range of NV integer precision */ | |
2456 | #endif | |
2457 | ) { | |
2458 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2459 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2460 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2461 | PTR2UV(sv), |
2462 | SvNVX(sv), | |
2463 | SvIVX(sv))); | |
2464 | ||
2465 | } else { | |
2466 | /* IV not precise. No need to convert from PV, as NV | |
2467 | conversion would already have cached IV if it detected | |
2468 | that PV->IV would be better than PV->NV->IV | |
2469 | flags already correct - don't set public IOK. */ | |
2470 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2471 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2472 | PTR2UV(sv), |
2473 | SvNVX(sv), | |
2474 | SvIVX(sv))); | |
2475 | } | |
2476 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2477 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2478 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2479 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2480 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2481 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2482 | Hopefully for 2s complement IV_MIN is something like | |
2483 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2484 | } |
28e5dec8 | 2485 | else { |
607fa7f2 | 2486 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2487 | if ( |
2488 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2489 | #ifndef NV_PRESERVES_UV | |
2490 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2491 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2492 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2493 | /* Don't flag it as "accurately an integer" if the number | |
2494 | came from a (by definition imprecise) NV operation, and | |
2495 | we're outside the range of NV integer precision */ | |
2496 | #endif | |
2497 | ) | |
2498 | SvIOK_on(sv); | |
2499 | SvIsUV_on(sv); | |
1c846c1f | 2500 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
28e5dec8 | 2501 | "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n", |
57def98f | 2502 | PTR2UV(sv), |
28e5dec8 JH |
2503 | SvUVX(sv), |
2504 | SvUVX(sv))); | |
25da4f38 | 2505 | } |
ff68c719 | 2506 | } |
2507 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 2508 | UV value; |
504618e9 | 2509 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
25da4f38 IZ |
2510 | |
2511 | /* We want to avoid a possible problem when we cache a UV which | |
2512 | may be later translated to an NV, and the resulting NV is not | |
2513 | the translation of the initial data. | |
1c846c1f | 2514 | |
25da4f38 IZ |
2515 | This means that if we cache such a UV, we need to cache the |
2516 | NV as well. Moreover, we trade speed for space, and do not | |
2517 | cache the NV if not needed. | |
2518 | */ | |
16b7a9a4 | 2519 | |
c2988b20 NC |
2520 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2521 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2522 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2523 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 | 2524 | if (SvTYPE(sv) < SVt_PVIV) |
f7bbb42a JH |
2525 | sv_upgrade(sv, SVt_PVIV); |
2526 | (void)SvIOK_on(sv); | |
c2988b20 NC |
2527 | } else if (SvTYPE(sv) < SVt_PVNV) |
2528 | sv_upgrade(sv, SVt_PVNV); | |
d460ef45 | 2529 | |
c2988b20 NC |
2530 | /* If NV preserves UV then we only use the UV value if we know that |
2531 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2532 | then the value returned may have more precision than atof() will | |
2533 | return, even though it isn't accurate. */ | |
2534 | if ((numtype & (IS_NUMBER_IN_UV | |
2535 | #ifdef NV_PRESERVES_UV | |
2536 | | IS_NUMBER_NOT_INT | |
2537 | #endif | |
2538 | )) == IS_NUMBER_IN_UV) { | |
2539 | /* This won't turn off the public IOK flag if it was set above */ | |
2540 | (void)SvIOKp_on(sv); | |
2541 | ||
2542 | if (!(numtype & IS_NUMBER_NEG)) { | |
2543 | /* positive */; | |
2544 | if (value <= (UV)IV_MAX) { | |
45977657 | 2545 | SvIV_set(sv, (IV)value); |
28e5dec8 JH |
2546 | } else { |
2547 | /* it didn't overflow, and it was positive. */ | |
607fa7f2 | 2548 | SvUV_set(sv, value); |
28e5dec8 JH |
2549 | SvIsUV_on(sv); |
2550 | } | |
c2988b20 NC |
2551 | } else { |
2552 | /* 2s complement assumption */ | |
2553 | if (value <= (UV)IV_MIN) { | |
45977657 | 2554 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2555 | } else { |
2556 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2557 | I'm assuming it will be rare. */ |
c2988b20 NC |
2558 | if (SvTYPE(sv) < SVt_PVNV) |
2559 | sv_upgrade(sv, SVt_PVNV); | |
2560 | SvNOK_on(sv); | |
2561 | SvIOK_off(sv); | |
2562 | SvIOKp_on(sv); | |
9d6ce603 | 2563 | SvNV_set(sv, -(NV)value); |
45977657 | 2564 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2565 | } |
2566 | } | |
2567 | } | |
2568 | ||
2569 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2570 | != IS_NUMBER_IN_UV) { | |
2571 | /* It wasn't an integer, or it overflowed the UV. */ | |
3f7c398e | 2572 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 | 2573 | |
c2988b20 | 2574 | if (! numtype && ckWARN(WARN_NUMERIC)) |
28e5dec8 JH |
2575 | not_a_number(sv); |
2576 | ||
2577 | #if defined(USE_LONG_DOUBLE) | |
c2988b20 NC |
2578 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n", |
2579 | PTR2UV(sv), SvNVX(sv))); | |
28e5dec8 | 2580 | #else |
1779d84d | 2581 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"NVgf")\n", |
c2988b20 | 2582 | PTR2UV(sv), SvNVX(sv))); |
28e5dec8 JH |
2583 | #endif |
2584 | ||
2585 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2586 | (void)SvIOKp_on(sv); |
2587 | (void)SvNOK_on(sv); | |
2588 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2589 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2590 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2591 | SvIOK_on(sv); | |
2592 | } else { | |
2593 | /* Integer is imprecise. NOK, IOKp */ | |
2594 | } | |
2595 | /* UV will not work better than IV */ | |
2596 | } else { | |
2597 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2598 | SvIsUV_on(sv); | |
2599 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 2600 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
2601 | SvIsUV_on(sv); |
2602 | } else { | |
607fa7f2 | 2603 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2604 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs |
2605 | NV preservse UV so can do correct comparison. */ | |
2606 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2607 | SvIOK_on(sv); | |
2608 | SvIsUV_on(sv); | |
2609 | } else { | |
2610 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
2611 | SvIsUV_on(sv); | |
2612 | } | |
2613 | } | |
2614 | } | |
28e5dec8 | 2615 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2616 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2617 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2618 | /* The UV slot will have been set from value returned by | |
2619 | grok_number above. The NV slot has just been set using | |
2620 | Atof. */ | |
560b0c46 | 2621 | SvNOK_on(sv); |
c2988b20 NC |
2622 | assert (SvIOKp(sv)); |
2623 | } else { | |
2624 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2625 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2626 | /* Small enough to preserve all bits. */ | |
2627 | (void)SvIOKp_on(sv); | |
2628 | SvNOK_on(sv); | |
45977657 | 2629 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2630 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
2631 | SvIOK_on(sv); | |
2632 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2633 | this NV is in the preserved range, therefore: */ | |
2634 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2635 | < (UV)IV_MAX)) { | |
32fdb065 | 2636 | Perl_croak(aTHX_ "sv_2uv assumed (U_V(fabs((double)SvNVX(sv))) < (UV)IV_MAX) but SvNVX(sv)=%"NVgf" U_V is 0x%"UVxf", IV_MAX is 0x%"UVxf"\n", SvNVX(sv), U_V(SvNVX(sv)), (UV)IV_MAX); |
c2988b20 NC |
2637 | } |
2638 | } else | |
2639 | sv_2iuv_non_preserve (sv, numtype); | |
2640 | } | |
28e5dec8 | 2641 | #endif /* NV_PRESERVES_UV */ |
f7bbb42a | 2642 | } |
ff68c719 | 2643 | } |
2644 | else { | |
d008e5eb | 2645 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2646 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2647 | report_uninit(sv); |
c6ee37c5 | 2648 | } |
25da4f38 IZ |
2649 | if (SvTYPE(sv) < SVt_IV) |
2650 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2651 | sv_upgrade(sv, SVt_IV); | |
ff68c719 | 2652 | return 0; |
2653 | } | |
25da4f38 | 2654 | |
1d7c1841 GS |
2655 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
2656 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 2657 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 2658 | } |
2659 | ||
645c22ef DM |
2660 | /* |
2661 | =for apidoc sv_2nv | |
2662 | ||
2663 | Return the num value of an SV, doing any necessary string or integer | |
2664 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
2665 | macros. | |
2666 | ||
2667 | =cut | |
2668 | */ | |
2669 | ||
65202027 | 2670 | NV |
864dbfa3 | 2671 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
2672 | { |
2673 | if (!sv) | |
2674 | return 0.0; | |
8990e307 | 2675 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
2676 | mg_get(sv); |
2677 | if (SvNOKp(sv)) | |
2678 | return SvNVX(sv); | |
a0d0e21e | 2679 | if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 2680 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && |
504618e9 | 2681 | !grok_number(SvPVX_const(sv), SvCUR(sv), NULL)) |
a0d0e21e | 2682 | not_a_number(sv); |
3f7c398e | 2683 | return Atof(SvPVX_const(sv)); |
a0d0e21e | 2684 | } |
25da4f38 | 2685 | if (SvIOKp(sv)) { |
1c846c1f | 2686 | if (SvIsUV(sv)) |
65202027 | 2687 | return (NV)SvUVX(sv); |
25da4f38 | 2688 | else |
65202027 | 2689 | return (NV)SvIVX(sv); |
25da4f38 | 2690 | } |
16d20bd9 | 2691 | if (!SvROK(sv)) { |
d008e5eb | 2692 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2693 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2694 | report_uninit(sv); |
c6ee37c5 | 2695 | } |
66a1b24b | 2696 | return (NV)0; |
16d20bd9 | 2697 | } |
463ee0b2 | 2698 | } |
ed6116ce | 2699 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2700 | if (SvROK(sv)) { |
a0d0e21e | 2701 | SV* tmpstr; |
1554e226 | 2702 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2703 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2704 | return SvNV(tmpstr); |
56431972 | 2705 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 2706 | } |
765f542d NC |
2707 | if (SvIsCOW(sv)) { |
2708 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2709 | } |
0336b60e | 2710 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 2711 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2712 | report_uninit(sv); |
ed6116ce LW |
2713 | return 0.0; |
2714 | } | |
79072805 LW |
2715 | } |
2716 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
2717 | if (SvTYPE(sv) == SVt_IV) |
2718 | sv_upgrade(sv, SVt_PVNV); | |
2719 | else | |
2720 | sv_upgrade(sv, SVt_NV); | |
906f284f | 2721 | #ifdef USE_LONG_DOUBLE |
097ee67d | 2722 | DEBUG_c({ |
f93f4e46 | 2723 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2724 | PerlIO_printf(Perl_debug_log, |
2725 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
2726 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2727 | RESTORE_NUMERIC_LOCAL(); |
2728 | }); | |
65202027 | 2729 | #else |
572bbb43 | 2730 | DEBUG_c({ |
f93f4e46 | 2731 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2732 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 2733 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2734 | RESTORE_NUMERIC_LOCAL(); |
2735 | }); | |
572bbb43 | 2736 | #endif |
79072805 LW |
2737 | } |
2738 | else if (SvTYPE(sv) < SVt_PVNV) | |
2739 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
2740 | if (SvNOKp(sv)) { |
2741 | return SvNVX(sv); | |
61604483 | 2742 | } |
59d8ce62 | 2743 | if (SvIOKp(sv)) { |
9d6ce603 | 2744 | SvNV_set(sv, SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv)); |
28e5dec8 JH |
2745 | #ifdef NV_PRESERVES_UV |
2746 | SvNOK_on(sv); | |
2747 | #else | |
2748 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
2749 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
2750 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
2751 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
2752 | SvNOK_on(sv); | |
2753 | else | |
2754 | SvNOKp_on(sv); | |
2755 | #endif | |
93a17b20 | 2756 | } |
748a9306 | 2757 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 2758 | UV value; |
3f7c398e | 2759 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
c2988b20 | 2760 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !numtype) |
a0d0e21e | 2761 | not_a_number(sv); |
28e5dec8 | 2762 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
2763 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2764 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2765 | /* It's definitely an integer */ |
9d6ce603 | 2766 | SvNV_set(sv, (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value); |
c2988b20 | 2767 | } else |
3f7c398e | 2768 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2769 | SvNOK_on(sv); |
2770 | #else | |
3f7c398e | 2771 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2772 | /* Only set the public NV OK flag if this NV preserves the value in |
2773 | the PV at least as well as an IV/UV would. | |
2774 | Not sure how to do this 100% reliably. */ | |
2775 | /* if that shift count is out of range then Configure's test is | |
2776 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
2777 | UV_BITS */ | |
2778 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 2779 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 2780 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
2781 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
2782 | /* Can't use strtol etc to convert this string, so don't try. | |
2783 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
2784 | SvNOK_on(sv); | |
2785 | } else { | |
2786 | /* value has been set. It may not be precise. */ | |
2787 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
2788 | /* 2s complement assumption for (UV)IV_MIN */ | |
2789 | SvNOK_on(sv); /* Integer is too negative. */ | |
2790 | } else { | |
2791 | SvNOKp_on(sv); | |
2792 | SvIOKp_on(sv); | |
6fa402ec | 2793 | |
c2988b20 | 2794 | if (numtype & IS_NUMBER_NEG) { |
45977657 | 2795 | SvIV_set(sv, -(IV)value); |
c2988b20 | 2796 | } else if (value <= (UV)IV_MAX) { |
45977657 | 2797 | SvIV_set(sv, (IV)value); |
c2988b20 | 2798 | } else { |
607fa7f2 | 2799 | SvUV_set(sv, value); |
c2988b20 NC |
2800 | SvIsUV_on(sv); |
2801 | } | |
2802 | ||
2803 | if (numtype & IS_NUMBER_NOT_INT) { | |
2804 | /* I believe that even if the original PV had decimals, | |
2805 | they are lost beyond the limit of the FP precision. | |
2806 | However, neither is canonical, so both only get p | |
2807 | flags. NWC, 2000/11/25 */ | |
2808 | /* Both already have p flags, so do nothing */ | |
2809 | } else { | |
66a1b24b | 2810 | const NV nv = SvNVX(sv); |
c2988b20 NC |
2811 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { |
2812 | if (SvIVX(sv) == I_V(nv)) { | |
2813 | SvNOK_on(sv); | |
2814 | SvIOK_on(sv); | |
2815 | } else { | |
2816 | SvIOK_on(sv); | |
2817 | /* It had no "." so it must be integer. */ | |
2818 | } | |
2819 | } else { | |
2820 | /* between IV_MAX and NV(UV_MAX). | |
2821 | Could be slightly > UV_MAX */ | |
6fa402ec | 2822 | |
c2988b20 NC |
2823 | if (numtype & IS_NUMBER_NOT_INT) { |
2824 | /* UV and NV both imprecise. */ | |
2825 | } else { | |
66a1b24b | 2826 | const UV nv_as_uv = U_V(nv); |
c2988b20 NC |
2827 | |
2828 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
2829 | SvNOK_on(sv); | |
2830 | SvIOK_on(sv); | |
2831 | } else { | |
2832 | SvIOK_on(sv); | |
2833 | } | |
2834 | } | |
2835 | } | |
2836 | } | |
2837 | } | |
2838 | } | |
28e5dec8 | 2839 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 2840 | } |
79072805 | 2841 | else { |
599cee73 | 2842 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 2843 | report_uninit(sv); |
25da4f38 IZ |
2844 | if (SvTYPE(sv) < SVt_NV) |
2845 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
2846 | /* XXX Ilya implies that this is a bug in callers that assume this |
2847 | and ideally should be fixed. */ | |
25da4f38 | 2848 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2849 | return 0.0; |
79072805 | 2850 | } |
572bbb43 | 2851 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 2852 | DEBUG_c({ |
f93f4e46 | 2853 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2854 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
2855 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2856 | RESTORE_NUMERIC_LOCAL(); |
2857 | }); | |
65202027 | 2858 | #else |
572bbb43 | 2859 | DEBUG_c({ |
f93f4e46 | 2860 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2861 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 2862 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2863 | RESTORE_NUMERIC_LOCAL(); |
2864 | }); | |
572bbb43 | 2865 | #endif |
463ee0b2 | 2866 | return SvNVX(sv); |
79072805 LW |
2867 | } |
2868 | ||
645c22ef DM |
2869 | /* asIV(): extract an integer from the string value of an SV. |
2870 | * Caller must validate PVX */ | |
2871 | ||
76e3520e | 2872 | STATIC IV |
cea2e8a9 | 2873 | S_asIV(pTHX_ SV *sv) |
36477c24 | 2874 | { |
c2988b20 | 2875 | UV value; |
66a1b24b | 2876 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
c2988b20 NC |
2877 | |
2878 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2879 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2880 | /* It's definitely an integer */ |
c2988b20 NC |
2881 | if (numtype & IS_NUMBER_NEG) { |
2882 | if (value < (UV)IV_MIN) | |
2883 | return -(IV)value; | |
2884 | } else { | |
2885 | if (value < (UV)IV_MAX) | |
2886 | return (IV)value; | |
2887 | } | |
2888 | } | |
d008e5eb | 2889 | if (!numtype) { |
d008e5eb GS |
2890 | if (ckWARN(WARN_NUMERIC)) |
2891 | not_a_number(sv); | |
2892 | } | |
3f7c398e | 2893 | return I_V(Atof(SvPVX_const(sv))); |
36477c24 | 2894 | } |
2895 | ||
645c22ef DM |
2896 | /* asUV(): extract an unsigned integer from the string value of an SV |
2897 | * Caller must validate PVX */ | |
2898 | ||
76e3520e | 2899 | STATIC UV |
cea2e8a9 | 2900 | S_asUV(pTHX_ SV *sv) |
36477c24 | 2901 | { |
c2988b20 | 2902 | UV value; |
504618e9 | 2903 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
36477c24 | 2904 | |
c2988b20 NC |
2905 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2906 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2907 | /* It's definitely an integer */ |
6fa402ec | 2908 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
2909 | return value; |
2910 | } | |
d008e5eb | 2911 | if (!numtype) { |
d008e5eb GS |
2912 | if (ckWARN(WARN_NUMERIC)) |
2913 | not_a_number(sv); | |
2914 | } | |
3f7c398e | 2915 | return U_V(Atof(SvPVX_const(sv))); |
36477c24 | 2916 | } |
2917 | ||
645c22ef DM |
2918 | /* |
2919 | =for apidoc sv_2pv_nolen | |
2920 | ||
2921 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
2922 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
2923 | =cut | |
2924 | */ | |
2925 | ||
79072805 | 2926 | char * |
864dbfa3 | 2927 | Perl_sv_2pv_nolen(pTHX_ register SV *sv) |
1fa8b10d | 2928 | { |
dafda6d1 | 2929 | return sv_2pv(sv, 0); |
1fa8b10d JD |
2930 | } |
2931 | ||
645c22ef DM |
2932 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
2933 | * UV as a string towards the end of buf, and return pointers to start and | |
2934 | * end of it. | |
2935 | * | |
2936 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
2937 | */ | |
2938 | ||
864dbfa3 | 2939 | static char * |
25da4f38 IZ |
2940 | uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
2941 | { | |
25da4f38 IZ |
2942 | char *ptr = buf + TYPE_CHARS(UV); |
2943 | char *ebuf = ptr; | |
2944 | int sign; | |
25da4f38 IZ |
2945 | |
2946 | if (is_uv) | |
2947 | sign = 0; | |
2948 | else if (iv >= 0) { | |
2949 | uv = iv; | |
2950 | sign = 0; | |
2951 | } else { | |
2952 | uv = -iv; | |
2953 | sign = 1; | |
2954 | } | |
2955 | do { | |
eb160463 | 2956 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
2957 | } while (uv /= 10); |
2958 | if (sign) | |
2959 | *--ptr = '-'; | |
2960 | *peob = ebuf; | |
2961 | return ptr; | |
2962 | } | |
2963 | ||
09540bc3 JH |
2964 | /* sv_2pv() is now a macro using Perl_sv_2pv_flags(); |
2965 | * this function provided for binary compatibility only | |
2966 | */ | |
2967 | ||
2968 | char * | |
2969 | Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp) | |
2970 | { | |
2971 | return sv_2pv_flags(sv, lp, SV_GMAGIC); | |
2972 | } | |
2973 | ||
645c22ef DM |
2974 | /* |
2975 | =for apidoc sv_2pv_flags | |
2976 | ||
ff276b08 | 2977 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
2978 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
2979 | if necessary. | |
2980 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
2981 | usually end up here too. | |
2982 | ||
2983 | =cut | |
2984 | */ | |
2985 | ||
8d6d96c1 HS |
2986 | char * |
2987 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
2988 | { | |
79072805 LW |
2989 | register char *s; |
2990 | int olderrno; | |
cb50f42d | 2991 | SV *tsv, *origsv; |
25da4f38 IZ |
2992 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
2993 | char *tmpbuf = tbuf; | |
79072805 | 2994 | |
463ee0b2 | 2995 | if (!sv) { |
cdb061a3 NC |
2996 | if (lp) |
2997 | *lp = 0; | |
73d840c0 | 2998 | return (char *)""; |
463ee0b2 | 2999 | } |
8990e307 | 3000 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
3001 | if (flags & SV_GMAGIC) |
3002 | mg_get(sv); | |
463ee0b2 | 3003 | if (SvPOKp(sv)) { |
cdb061a3 NC |
3004 | if (lp) |
3005 | *lp = SvCUR(sv); | |
10516c54 NC |
3006 | if (flags & SV_MUTABLE_RETURN) |
3007 | return SvPVX_mutable(sv); | |
4d84ee25 NC |
3008 | if (flags & SV_CONST_RETURN) |
3009 | return (char *)SvPVX_const(sv); | |
463ee0b2 LW |
3010 | return SvPVX(sv); |
3011 | } | |
cf2093f6 | 3012 | if (SvIOKp(sv)) { |
1c846c1f | 3013 | if (SvIsUV(sv)) |
57def98f | 3014 | (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 3015 | else |
57def98f | 3016 | (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv)); |
46fc3d4c | 3017 | tsv = Nullsv; |
a0d0e21e | 3018 | goto tokensave; |
463ee0b2 LW |
3019 | } |
3020 | if (SvNOKp(sv)) { | |
2d4389e4 | 3021 | Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf); |
46fc3d4c | 3022 | tsv = Nullsv; |
a0d0e21e | 3023 | goto tokensave; |
463ee0b2 | 3024 | } |
16d20bd9 | 3025 | if (!SvROK(sv)) { |
d008e5eb | 3026 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3027 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3028 | report_uninit(sv); |
c6ee37c5 | 3029 | } |
cdb061a3 NC |
3030 | if (lp) |
3031 | *lp = 0; | |
73d840c0 | 3032 | return (char *)""; |
16d20bd9 | 3033 | } |
463ee0b2 | 3034 | } |
ed6116ce LW |
3035 | if (SvTHINKFIRST(sv)) { |
3036 | if (SvROK(sv)) { | |
a0d0e21e | 3037 | SV* tmpstr; |
e1ec3a88 | 3038 | register const char *typestr; |
1554e226 | 3039 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 3040 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
50adf7d2 NC |
3041 | /* Unwrap this: */ |
3042 | /* char *pv = lp ? SvPV(tmpstr, *lp) : SvPV_nolen(tmpstr); */ | |
3043 | ||
3044 | char *pv; | |
3045 | if ((SvFLAGS(tmpstr) & (SVf_POK)) == SVf_POK) { | |
3046 | if (flags & SV_CONST_RETURN) { | |
3047 | pv = (char *) SvPVX_const(tmpstr); | |
3048 | } else { | |
3049 | pv = (flags & SV_MUTABLE_RETURN) | |
3050 | ? SvPVX_mutable(tmpstr) : SvPVX(tmpstr); | |
3051 | } | |
3052 | if (lp) | |
3053 | *lp = SvCUR(tmpstr); | |
3054 | } else { | |
3055 | pv = sv_2pv_flags(tmpstr, lp, flags); | |
3056 | } | |
446eaa42 YST |
3057 | if (SvUTF8(tmpstr)) |
3058 | SvUTF8_on(sv); | |
3059 | else | |
3060 | SvUTF8_off(sv); | |
3061 | return pv; | |
3062 | } | |
cb50f42d | 3063 | origsv = sv; |
ed6116ce LW |
3064 | sv = (SV*)SvRV(sv); |
3065 | if (!sv) | |
e1ec3a88 | 3066 | typestr = "NULLREF"; |
ed6116ce | 3067 | else { |
f9277f47 IZ |
3068 | MAGIC *mg; |
3069 | ||
ed6116ce | 3070 | switch (SvTYPE(sv)) { |
f9277f47 IZ |
3071 | case SVt_PVMG: |
3072 | if ( ((SvFLAGS(sv) & | |
1c846c1f | 3073 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) |
faf82a0b | 3074 | == (SVs_OBJECT|SVs_SMG)) |
14befaf4 | 3075 | && (mg = mg_find(sv, PERL_MAGIC_qr))) { |
e1ec3a88 | 3076 | const regexp *re = (regexp *)mg->mg_obj; |
1bd3ad17 | 3077 | |
2cd61cdb | 3078 | if (!mg->mg_ptr) { |
e1ec3a88 | 3079 | const char *fptr = "msix"; |
8782bef2 GB |
3080 | char reflags[6]; |
3081 | char ch; | |
3082 | int left = 0; | |
3083 | int right = 4; | |
ff385a1b | 3084 | char need_newline = 0; |
eb160463 | 3085 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
8782bef2 | 3086 | |
155aba94 | 3087 | while((ch = *fptr++)) { |
8782bef2 GB |
3088 | if(reganch & 1) { |
3089 | reflags[left++] = ch; | |
3090 | } | |
3091 | else { | |
3092 | reflags[right--] = ch; | |
3093 | } | |
3094 | reganch >>= 1; | |
3095 | } | |
3096 | if(left != 4) { | |
3097 | reflags[left] = '-'; | |
3098 | left = 5; | |
3099 | } | |
3100 | ||
3101 | mg->mg_len = re->prelen + 4 + left; | |
ff385a1b JF |
3102 | /* |
3103 | * If /x was used, we have to worry about a regex | |
3104 | * ending with a comment later being embedded | |
3105 | * within another regex. If so, we don't want this | |
3106 | * regex's "commentization" to leak out to the | |
3107 | * right part of the enclosing regex, we must cap | |
3108 | * it with a newline. | |
3109 | * | |
3110 | * So, if /x was used, we scan backwards from the | |
3111 | * end of the regex. If we find a '#' before we | |
3112 | * find a newline, we need to add a newline | |
3113 | * ourself. If we find a '\n' first (or if we | |
3114 | * don't find '#' or '\n'), we don't need to add | |
3115 | * anything. -jfriedl | |
3116 | */ | |
3117 | if (PMf_EXTENDED & re->reganch) | |
3118 | { | |
e1ec3a88 | 3119 | const char *endptr = re->precomp + re->prelen; |
ff385a1b JF |
3120 | while (endptr >= re->precomp) |
3121 | { | |
e1ec3a88 | 3122 | const char c = *(endptr--); |
ff385a1b JF |
3123 | if (c == '\n') |
3124 | break; /* don't need another */ | |
3125 | if (c == '#') { | |
3126 | /* we end while in a comment, so we | |
3127 | need a newline */ | |
3128 | mg->mg_len++; /* save space for it */ | |
3129 | need_newline = 1; /* note to add it */ | |
ab01544f | 3130 | break; |
ff385a1b JF |
3131 | } |
3132 | } | |
3133 | } | |
3134 | ||
8782bef2 GB |
3135 | New(616, mg->mg_ptr, mg->mg_len + 1 + left, char); |
3136 | Copy("(?", mg->mg_ptr, 2, char); | |
3137 | Copy(reflags, mg->mg_ptr+2, left, char); | |
3138 | Copy(":", mg->mg_ptr+left+2, 1, char); | |
3139 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
ff385a1b JF |
3140 | if (need_newline) |
3141 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
1bd3ad17 IZ |
3142 | mg->mg_ptr[mg->mg_len - 1] = ')'; |
3143 | mg->mg_ptr[mg->mg_len] = 0; | |
3144 | } | |
3280af22 | 3145 | PL_reginterp_cnt += re->program[0].next_off; |
cb50f42d YST |
3146 | |
3147 | if (re->reganch & ROPT_UTF8) | |
3148 | SvUTF8_on(origsv); | |
3149 | else | |
3150 | SvUTF8_off(origsv); | |
cdb061a3 NC |
3151 | if (lp) |
3152 | *lp = mg->mg_len; | |
1bd3ad17 | 3153 | return mg->mg_ptr; |
f9277f47 IZ |
3154 | } |
3155 | /* Fall through */ | |
ed6116ce LW |
3156 | case SVt_NULL: |
3157 | case SVt_IV: | |
3158 | case SVt_NV: | |
3159 | case SVt_RV: | |
3160 | case SVt_PV: | |
3161 | case SVt_PVIV: | |
3162 | case SVt_PVNV: | |
e1ec3a88 AL |
3163 | case SVt_PVBM: typestr = SvROK(sv) ? "REF" : "SCALAR"; break; |
3164 | case SVt_PVLV: typestr = SvROK(sv) ? "REF" | |
be65207d DM |
3165 | /* tied lvalues should appear to be |
3166 | * scalars for backwards compatitbility */ | |
3167 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
3168 | ? "SCALAR" : "LVALUE"; break; | |
e1ec3a88 AL |
3169 | case SVt_PVAV: typestr = "ARRAY"; break; |
3170 | case SVt_PVHV: typestr = "HASH"; break; | |
3171 | case SVt_PVCV: typestr = "CODE"; break; | |
3172 | case SVt_PVGV: typestr = "GLOB"; break; | |
3173 | case SVt_PVFM: typestr = "FORMAT"; break; | |
3174 | case SVt_PVIO: typestr = "IO"; break; | |
3175 | default: typestr = "UNKNOWN"; break; | |
ed6116ce | 3176 | } |
46fc3d4c | 3177 | tsv = NEWSV(0,0); |
a5cb6b62 | 3178 | if (SvOBJECT(sv)) { |
bfcb3514 | 3179 | const char *name = HvNAME_get(SvSTASH(sv)); |
a5cb6b62 | 3180 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s(0x%"UVxf")", |
e1ec3a88 | 3181 | name ? name : "__ANON__" , typestr, PTR2UV(sv)); |
a5cb6b62 | 3182 | } |
ed6116ce | 3183 | else |
e1ec3a88 | 3184 | Perl_sv_setpvf(aTHX_ tsv, "%s(0x%"UVxf")", typestr, PTR2UV(sv)); |
a0d0e21e | 3185 | goto tokensaveref; |
463ee0b2 | 3186 | } |
cdb061a3 NC |
3187 | if (lp) |
3188 | *lp = strlen(typestr); | |
73d840c0 | 3189 | return (char *)typestr; |
79072805 | 3190 | } |
0336b60e | 3191 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 3192 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3193 | report_uninit(sv); |
cdb061a3 NC |
3194 | if (lp) |
3195 | *lp = 0; | |
73d840c0 | 3196 | return (char *)""; |
79072805 | 3197 | } |
79072805 | 3198 | } |
28e5dec8 JH |
3199 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
3200 | /* I'm assuming that if both IV and NV are equally valid then | |
3201 | converting the IV is going to be more efficient */ | |
e1ec3a88 AL |
3202 | const U32 isIOK = SvIOK(sv); |
3203 | const U32 isUIOK = SvIsUV(sv); | |
28e5dec8 JH |
3204 | char buf[TYPE_CHARS(UV)]; |
3205 | char *ebuf, *ptr; | |
3206 | ||
3207 | if (SvTYPE(sv) < SVt_PVIV) | |
3208 | sv_upgrade(sv, SVt_PVIV); | |
3209 | if (isUIOK) | |
3210 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
3211 | else | |
3212 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
5902b6a9 NC |
3213 | /* inlined from sv_setpvn */ |
3214 | SvGROW_mutable(sv, (STRLEN)(ebuf - ptr + 1)); | |
4d84ee25 | 3215 | Move(ptr,SvPVX_mutable(sv),ebuf - ptr,char); |
28e5dec8 JH |
3216 | SvCUR_set(sv, ebuf - ptr); |
3217 | s = SvEND(sv); | |
3218 | *s = '\0'; | |
3219 | if (isIOK) | |
3220 | SvIOK_on(sv); | |
3221 | else | |
3222 | SvIOKp_on(sv); | |
3223 | if (isUIOK) | |
3224 | SvIsUV_on(sv); | |
3225 | } | |
3226 | else if (SvNOKp(sv)) { | |
79072805 LW |
3227 | if (SvTYPE(sv) < SVt_PVNV) |
3228 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 3229 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
5902b6a9 | 3230 | s = SvGROW_mutable(sv, NV_DIG + 20); |
79072805 | 3231 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 3232 | #ifdef apollo |
463ee0b2 | 3233 | if (SvNVX(sv) == 0.0) |
79072805 LW |
3234 | (void)strcpy(s,"0"); |
3235 | else | |
3236 | #endif /*apollo*/ | |
bbce6d69 | 3237 | { |
2d4389e4 | 3238 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 3239 | } |
79072805 | 3240 | errno = olderrno; |
a0d0e21e LW |
3241 | #ifdef FIXNEGATIVEZERO |
3242 | if (*s == '-' && s[1] == '0' && !s[2]) | |
3243 | strcpy(s,"0"); | |
3244 | #endif | |
79072805 LW |
3245 | while (*s) s++; |
3246 | #ifdef hcx | |
3247 | if (s[-1] == '.') | |
46fc3d4c | 3248 | *--s = '\0'; |
79072805 LW |
3249 | #endif |
3250 | } | |
79072805 | 3251 | else { |
0336b60e IZ |
3252 | if (ckWARN(WARN_UNINITIALIZED) |
3253 | && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) | |
29489e7c | 3254 | report_uninit(sv); |
cdb061a3 | 3255 | if (lp) |
a0d0e21e | 3256 | *lp = 0; |
25da4f38 IZ |
3257 | if (SvTYPE(sv) < SVt_PV) |
3258 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3259 | sv_upgrade(sv, SVt_PV); | |
73d840c0 | 3260 | return (char *)""; |
79072805 | 3261 | } |
cdb061a3 NC |
3262 | { |
3263 | STRLEN len = s - SvPVX_const(sv); | |
3264 | if (lp) | |
3265 | *lp = len; | |
3266 | SvCUR_set(sv, len); | |
3267 | } | |
79072805 | 3268 | SvPOK_on(sv); |
1d7c1841 | 3269 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 3270 | PTR2UV(sv),SvPVX_const(sv))); |
4d84ee25 NC |
3271 | if (flags & SV_CONST_RETURN) |
3272 | return (char *)SvPVX_const(sv); | |
10516c54 NC |
3273 | if (flags & SV_MUTABLE_RETURN) |
3274 | return SvPVX_mutable(sv); | |
463ee0b2 | 3275 | return SvPVX(sv); |
a0d0e21e LW |
3276 | |
3277 | tokensave: | |
3278 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ | |
3279 | /* Sneaky stuff here */ | |
3280 | ||
3281 | tokensaveref: | |
46fc3d4c | 3282 | if (!tsv) |
96827780 | 3283 | tsv = newSVpv(tmpbuf, 0); |
46fc3d4c | 3284 | sv_2mortal(tsv); |
cdb061a3 NC |
3285 | if (lp) |
3286 | *lp = SvCUR(tsv); | |
46fc3d4c | 3287 | return SvPVX(tsv); |
a0d0e21e LW |
3288 | } |
3289 | else { | |
27da23d5 | 3290 | dVAR; |
a0d0e21e | 3291 | STRLEN len; |
73d840c0 | 3292 | const char *t; |
46fc3d4c | 3293 | |
3294 | if (tsv) { | |
3295 | sv_2mortal(tsv); | |
3f7c398e | 3296 | t = SvPVX_const(tsv); |
46fc3d4c | 3297 | len = SvCUR(tsv); |
3298 | } | |
3299 | else { | |
96827780 MB |
3300 | t = tmpbuf; |
3301 | len = strlen(tmpbuf); | |
46fc3d4c | 3302 | } |
a0d0e21e | 3303 | #ifdef FIXNEGATIVEZERO |
46fc3d4c | 3304 | if (len == 2 && t[0] == '-' && t[1] == '0') { |
3305 | t = "0"; | |
3306 | len = 1; | |
3307 | } | |
a0d0e21e | 3308 | #endif |
862a34c6 | 3309 | SvUPGRADE(sv, SVt_PV); |
cdb061a3 NC |
3310 | if (lp) |
3311 | *lp = len; | |
5902b6a9 | 3312 | s = SvGROW_mutable(sv, len + 1); |
a0d0e21e | 3313 | SvCUR_set(sv, len); |
6bf554b4 | 3314 | SvPOKp_on(sv); |
490a0e98 | 3315 | return memcpy(s, t, len + 1); |
a0d0e21e | 3316 | } |
463ee0b2 LW |
3317 | } |
3318 | ||
645c22ef | 3319 | /* |
6050d10e JP |
3320 | =for apidoc sv_copypv |
3321 | ||
3322 | Copies a stringified representation of the source SV into the | |
3323 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3324 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3325 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3326 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3327 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3328 | would lose the UTF-8'ness of the PV. |
3329 | ||
3330 | =cut | |
3331 | */ | |
3332 | ||
3333 | void | |
3334 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3335 | { | |
446eaa42 | 3336 | STRLEN len; |
53c1dcc0 | 3337 | const char * const s = SvPV_const(ssv,len); |
cb50f42d | 3338 | sv_setpvn(dsv,s,len); |
446eaa42 | 3339 | if (SvUTF8(ssv)) |
cb50f42d | 3340 | SvUTF8_on(dsv); |
446eaa42 | 3341 | else |
cb50f42d | 3342 | SvUTF8_off(dsv); |
6050d10e JP |
3343 | } |
3344 | ||
3345 | /* | |
645c22ef DM |
3346 | =for apidoc sv_2pvbyte_nolen |
3347 | ||
3348 | Return a pointer to the byte-encoded representation of the SV. | |
1e54db1a | 3349 | May cause the SV to be downgraded from UTF-8 as a side-effect. |
645c22ef DM |
3350 | |
3351 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3352 | ||
3353 | =cut | |
3354 | */ | |
3355 | ||
7340a771 GS |
3356 | char * |
3357 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
3358 | { | |
dafda6d1 | 3359 | return sv_2pvbyte(sv, 0); |
7340a771 GS |
3360 | } |
3361 | ||
645c22ef DM |
3362 | /* |
3363 | =for apidoc sv_2pvbyte | |
3364 | ||
3365 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 3366 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
3367 | side-effect. |
3368 | ||
3369 | Usually accessed via the C<SvPVbyte> macro. | |
3370 | ||
3371 | =cut | |
3372 | */ | |
3373 | ||
7340a771 GS |
3374 | char * |
3375 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3376 | { | |
0875d2fe | 3377 | sv_utf8_downgrade(sv,0); |
97972285 | 3378 | return lp ? SvPV(sv,*lp) : SvPV_nolen(sv); |
7340a771 GS |
3379 | } |
3380 | ||
645c22ef DM |
3381 | /* |
3382 | =for apidoc sv_2pvutf8_nolen | |
3383 | ||
1e54db1a JH |
3384 | Return a pointer to the UTF-8-encoded representation of the SV. |
3385 | May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3386 | |
3387 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3388 | ||
3389 | =cut | |
3390 | */ | |
3391 | ||
7340a771 GS |
3392 | char * |
3393 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
3394 | { | |
dafda6d1 | 3395 | return sv_2pvutf8(sv, 0); |
7340a771 GS |
3396 | } |
3397 | ||
645c22ef DM |
3398 | /* |
3399 | =for apidoc sv_2pvutf8 | |
3400 | ||
1e54db1a JH |
3401 | Return a pointer to the UTF-8-encoded representation of the SV, and set *lp |
3402 | to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3403 | |
3404 | Usually accessed via the C<SvPVutf8> macro. | |
3405 | ||
3406 | =cut | |
3407 | */ | |
3408 | ||
7340a771 GS |
3409 | char * |
3410 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3411 | { | |
560a288e | 3412 | sv_utf8_upgrade(sv); |
7d59b7e4 | 3413 | return SvPV(sv,*lp); |
7340a771 | 3414 | } |
1c846c1f | 3415 | |
645c22ef DM |
3416 | /* |
3417 | =for apidoc sv_2bool | |
3418 | ||
3419 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3420 | sv_true() or its macro equivalent. |
645c22ef DM |
3421 | |
3422 | =cut | |
3423 | */ | |
3424 | ||
463ee0b2 | 3425 | bool |
864dbfa3 | 3426 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3427 | { |
8990e307 | 3428 | if (SvGMAGICAL(sv)) |
463ee0b2 LW |
3429 | mg_get(sv); |
3430 | ||
a0d0e21e LW |
3431 | if (!SvOK(sv)) |
3432 | return 0; | |
3433 | if (SvROK(sv)) { | |
a0d0e21e | 3434 | SV* tmpsv; |
1554e226 | 3435 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3436 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3437 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3438 | return SvRV(sv) != 0; |
3439 | } | |
463ee0b2 | 3440 | if (SvPOKp(sv)) { |
53c1dcc0 AL |
3441 | register XPV* const Xpvtmp = (XPV*)SvANY(sv); |
3442 | if (Xpvtmp && | |
339049b0 | 3443 | (*sv->sv_u.svu_pv > '0' || |
11343788 | 3444 | Xpvtmp->xpv_cur > 1 || |
339049b0 | 3445 | (Xpvtmp->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
463ee0b2 LW |
3446 | return 1; |
3447 | else | |
3448 | return 0; | |
3449 | } | |
3450 | else { | |
3451 | if (SvIOKp(sv)) | |
3452 | return SvIVX(sv) != 0; | |
3453 | else { | |
3454 | if (SvNOKp(sv)) | |
3455 | return SvNVX(sv) != 0.0; | |
3456 | else | |
3457 | return FALSE; | |
3458 | } | |
3459 | } | |
79072805 LW |
3460 | } |
3461 | ||
09540bc3 JH |
3462 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
3463 | * this function provided for binary compatibility only | |
3464 | */ | |
3465 | ||
3466 | ||
3467 | STRLEN | |
3468 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
3469 | { | |
3470 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
3471 | } | |
3472 | ||
c461cf8f JH |
3473 | /* |
3474 | =for apidoc sv_utf8_upgrade | |
3475 | ||
78ea37eb | 3476 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3477 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3478 | Always sets the SvUTF8 flag to avoid future validity checks even |
3479 | if all the bytes have hibit clear. | |
c461cf8f | 3480 | |
13a6c0e0 JH |
3481 | This is not as a general purpose byte encoding to Unicode interface: |
3482 | use the Encode extension for that. | |
3483 | ||
8d6d96c1 HS |
3484 | =for apidoc sv_utf8_upgrade_flags |
3485 | ||
78ea37eb | 3486 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3487 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3488 | Always sets the SvUTF8 flag to avoid future validity checks even |
3489 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3490 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3491 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3492 | ||
13a6c0e0 JH |
3493 | This is not as a general purpose byte encoding to Unicode interface: |
3494 | use the Encode extension for that. | |
3495 | ||
8d6d96c1 HS |
3496 | =cut |
3497 | */ | |
3498 | ||
3499 | STRLEN | |
3500 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3501 | { | |
808c356f RGS |
3502 | if (sv == &PL_sv_undef) |
3503 | return 0; | |
e0e62c2a NIS |
3504 | if (!SvPOK(sv)) { |
3505 | STRLEN len = 0; | |
d52b7888 NC |
3506 | if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) { |
3507 | (void) sv_2pv_flags(sv,&len, flags); | |
3508 | if (SvUTF8(sv)) | |
3509 | return len; | |
3510 | } else { | |
3511 | (void) SvPV_force(sv,len); | |
3512 | } | |
e0e62c2a | 3513 | } |
4411f3b6 | 3514 | |
f5cee72b | 3515 | if (SvUTF8(sv)) { |
5fec3b1d | 3516 | return SvCUR(sv); |
f5cee72b | 3517 | } |
5fec3b1d | 3518 | |
765f542d NC |
3519 | if (SvIsCOW(sv)) { |
3520 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3521 | } |
3522 | ||
88632417 | 3523 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3524 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 3525 | else { /* Assume Latin-1/EBCDIC */ |
c4e7c712 NC |
3526 | /* This function could be much more efficient if we |
3527 | * had a FLAG in SVs to signal if there are any hibit | |
3528 | * chars in the PV. Given that there isn't such a flag | |
3529 | * make the loop as fast as possible. */ | |
93524f2b NC |
3530 | const U8 *s = (U8 *) SvPVX_const(sv); |
3531 | const U8 *e = (U8 *) SvEND(sv); | |
3532 | const U8 *t = s; | |
c4e7c712 NC |
3533 | int hibit = 0; |
3534 | ||
3535 | while (t < e) { | |
53c1dcc0 | 3536 | const U8 ch = *t++; |
c4e7c712 NC |
3537 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) |
3538 | break; | |
3539 | } | |
3540 | if (hibit) { | |
3541 | STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */ | |
53c1dcc0 | 3542 | U8 * const recoded = bytes_to_utf8((U8*)s, &len); |
c4e7c712 NC |
3543 | |
3544 | SvPV_free(sv); /* No longer using what was there before. */ | |
3545 | ||
1e2ebb21 | 3546 | SvPV_set(sv, (char*)recoded); |
c4e7c712 NC |
3547 | SvCUR_set(sv, len - 1); |
3548 | SvLEN_set(sv, len); /* No longer know the real size. */ | |
3549 | } | |
3550 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ | |
3551 | SvUTF8_on(sv); | |
560a288e | 3552 | } |
4411f3b6 | 3553 | return SvCUR(sv); |
560a288e GS |
3554 | } |
3555 | ||
c461cf8f JH |
3556 | /* |
3557 | =for apidoc sv_utf8_downgrade | |
3558 | ||
78ea37eb TS |
3559 | Attempts to convert the PV of an SV from characters to bytes. |
3560 | If the PV contains a character beyond byte, this conversion will fail; | |
3561 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
3562 | true, croaks. |
3563 | ||
13a6c0e0 JH |
3564 | This is not as a general purpose Unicode to byte encoding interface: |
3565 | use the Encode extension for that. | |
3566 | ||
c461cf8f JH |
3567 | =cut |
3568 | */ | |
3569 | ||
560a288e GS |
3570 | bool |
3571 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
3572 | { | |
78ea37eb | 3573 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 3574 | if (SvCUR(sv)) { |
03cfe0ae | 3575 | U8 *s; |
652088fc | 3576 | STRLEN len; |
fa301091 | 3577 | |
765f542d NC |
3578 | if (SvIsCOW(sv)) { |
3579 | sv_force_normal_flags(sv, 0); | |
3580 | } | |
03cfe0ae NIS |
3581 | s = (U8 *) SvPV(sv, len); |
3582 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
3583 | if (fail_ok) |
3584 | return FALSE; | |
3585 | else { | |
3586 | if (PL_op) | |
3587 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 3588 | OP_DESC(PL_op)); |
fa301091 JH |
3589 | else |
3590 | Perl_croak(aTHX_ "Wide character"); | |
3591 | } | |
4b3603a4 | 3592 | } |
b162af07 | 3593 | SvCUR_set(sv, len); |
67e989fb | 3594 | } |
560a288e | 3595 | } |
ffebcc3e | 3596 | SvUTF8_off(sv); |
560a288e GS |
3597 | return TRUE; |
3598 | } | |
3599 | ||
c461cf8f JH |
3600 | /* |
3601 | =for apidoc sv_utf8_encode | |
3602 | ||
78ea37eb TS |
3603 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
3604 | flag off so that it looks like octets again. | |
c461cf8f JH |
3605 | |
3606 | =cut | |
3607 | */ | |
3608 | ||
560a288e GS |
3609 | void |
3610 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
3611 | { | |
4411f3b6 | 3612 | (void) sv_utf8_upgrade(sv); |
4c94c214 NC |
3613 | if (SvIsCOW(sv)) { |
3614 | sv_force_normal_flags(sv, 0); | |
3615 | } | |
3616 | if (SvREADONLY(sv)) { | |
3617 | Perl_croak(aTHX_ PL_no_modify); | |
3618 | } | |
560a288e GS |
3619 | SvUTF8_off(sv); |
3620 | } | |
3621 | ||
4411f3b6 NIS |
3622 | /* |
3623 | =for apidoc sv_utf8_decode | |
3624 | ||
78ea37eb TS |
3625 | If the PV of the SV is an octet sequence in UTF-8 |
3626 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
3627 | so that it looks like a character. If the PV contains only single-byte | |
3628 | characters, the C<SvUTF8> flag stays being off. | |
3629 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
3630 | |
3631 | =cut | |
3632 | */ | |
3633 | ||
560a288e GS |
3634 | bool |
3635 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
3636 | { | |
78ea37eb | 3637 | if (SvPOKp(sv)) { |
93524f2b NC |
3638 | const U8 *c; |
3639 | const U8 *e; | |
9cbac4c7 | 3640 | |
645c22ef DM |
3641 | /* The octets may have got themselves encoded - get them back as |
3642 | * bytes | |
3643 | */ | |
3644 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
3645 | return FALSE; |
3646 | ||
3647 | /* it is actually just a matter of turning the utf8 flag on, but | |
3648 | * we want to make sure everything inside is valid utf8 first. | |
3649 | */ | |
93524f2b | 3650 | c = (const U8 *) SvPVX_const(sv); |
63cd0674 | 3651 | if (!is_utf8_string(c, SvCUR(sv)+1)) |
67e989fb | 3652 | return FALSE; |
93524f2b | 3653 | e = (const U8 *) SvEND(sv); |
511c2ff0 | 3654 | while (c < e) { |
c4d5f83a NIS |
3655 | U8 ch = *c++; |
3656 | if (!UTF8_IS_INVARIANT(ch)) { | |
67e989fb JH |
3657 | SvUTF8_on(sv); |
3658 | break; | |
3659 | } | |
560a288e | 3660 | } |
560a288e GS |
3661 | } |
3662 | return TRUE; | |
3663 | } | |
3664 | ||
09540bc3 JH |
3665 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); |
3666 | * this function provided for binary compatibility only | |
3667 | */ | |
3668 | ||
3669 | void | |
3670 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
3671 | { | |
3672 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
3673 | } | |
3674 | ||
954c1994 GS |
3675 | /* |
3676 | =for apidoc sv_setsv | |
3677 | ||
645c22ef DM |
3678 | Copies the contents of the source SV C<ssv> into the destination SV |
3679 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3680 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3681 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3682 | content of the destination. | |
3683 | ||
3684 | You probably want to use one of the assortment of wrappers, such as | |
3685 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3686 | C<SvSetMagicSV_nosteal>. | |
3687 | ||
8d6d96c1 HS |
3688 | =for apidoc sv_setsv_flags |
3689 | ||
645c22ef DM |
3690 | Copies the contents of the source SV C<ssv> into the destination SV |
3691 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3692 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3693 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3694 | content of the destination. | |
3695 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
5fcdf167 NC |
3696 | C<ssv> if appropriate, else not. If the C<flags> parameter has the |
3697 | C<NOSTEAL> bit set then the buffers of temps will not be stolen. <sv_setsv> | |
3698 | and C<sv_setsv_nomg> are implemented in terms of this function. | |
645c22ef DM |
3699 | |
3700 | You probably want to use one of the assortment of wrappers, such as | |
3701 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3702 | C<SvSetMagicSV_nosteal>. | |
3703 | ||
3704 | This is the primary function for copying scalars, and most other | |
3705 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
3706 | |
3707 | =cut | |
3708 | */ | |
3709 | ||
3710 | void | |
3711 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
3712 | { | |
8990e307 LW |
3713 | register U32 sflags; |
3714 | register int dtype; | |
3715 | register int stype; | |
463ee0b2 | 3716 | |
79072805 LW |
3717 | if (sstr == dstr) |
3718 | return; | |
765f542d | 3719 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 3720 | if (!sstr) |
3280af22 | 3721 | sstr = &PL_sv_undef; |
8990e307 LW |
3722 | stype = SvTYPE(sstr); |
3723 | dtype = SvTYPE(dstr); | |
79072805 | 3724 | |
a0d0e21e | 3725 | SvAMAGIC_off(dstr); |
7a5fa8a2 | 3726 | if ( SvVOK(dstr) ) |
ece467f9 JP |
3727 | { |
3728 | /* need to nuke the magic */ | |
3729 | mg_free(dstr); | |
3730 | SvRMAGICAL_off(dstr); | |
3731 | } | |
9e7bc3e8 | 3732 | |
463ee0b2 | 3733 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 3734 | |
8990e307 | 3735 | switch (stype) { |
79072805 | 3736 | case SVt_NULL: |
aece5585 | 3737 | undef_sstr: |
20408e3c GS |
3738 | if (dtype != SVt_PVGV) { |
3739 | (void)SvOK_off(dstr); | |
3740 | return; | |
3741 | } | |
3742 | break; | |
463ee0b2 | 3743 | case SVt_IV: |
aece5585 GA |
3744 | if (SvIOK(sstr)) { |
3745 | switch (dtype) { | |
3746 | case SVt_NULL: | |
8990e307 | 3747 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
3748 | break; |
3749 | case SVt_NV: | |
8990e307 | 3750 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3751 | break; |
3752 | case SVt_RV: | |
3753 | case SVt_PV: | |
a0d0e21e | 3754 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
3755 | break; |
3756 | } | |
3757 | (void)SvIOK_only(dstr); | |
45977657 | 3758 | SvIV_set(dstr, SvIVX(sstr)); |
25da4f38 IZ |
3759 | if (SvIsUV(sstr)) |
3760 | SvIsUV_on(dstr); | |
27c9684d AP |
3761 | if (SvTAINTED(sstr)) |
3762 | SvTAINT(dstr); | |
aece5585 | 3763 | return; |
8990e307 | 3764 | } |
aece5585 GA |
3765 | goto undef_sstr; |
3766 | ||
463ee0b2 | 3767 | case SVt_NV: |
aece5585 GA |
3768 | if (SvNOK(sstr)) { |
3769 | switch (dtype) { | |
3770 | case SVt_NULL: | |
3771 | case SVt_IV: | |
8990e307 | 3772 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
3773 | break; |
3774 | case SVt_RV: | |
3775 | case SVt_PV: | |
3776 | case SVt_PVIV: | |
a0d0e21e | 3777 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3778 | break; |
3779 | } | |
9d6ce603 | 3780 | SvNV_set(dstr, SvNVX(sstr)); |
aece5585 | 3781 | (void)SvNOK_only(dstr); |
27c9684d AP |
3782 | if (SvTAINTED(sstr)) |
3783 | SvTAINT(dstr); | |
aece5585 | 3784 | return; |
8990e307 | 3785 | } |
aece5585 GA |
3786 | goto undef_sstr; |
3787 | ||
ed6116ce | 3788 | case SVt_RV: |
8990e307 | 3789 | if (dtype < SVt_RV) |
ed6116ce | 3790 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 3791 | else if (dtype == SVt_PVGV && |
23bb1b96 | 3792 | SvROK(sstr) && SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
c07a80fd | 3793 | sstr = SvRV(sstr); |
a5f75d66 | 3794 | if (sstr == dstr) { |
1d7c1841 GS |
3795 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3796 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3797 | { | |
a5f75d66 | 3798 | GvIMPORTED_on(dstr); |
1d7c1841 | 3799 | } |
a5f75d66 AD |
3800 | GvMULTI_on(dstr); |
3801 | return; | |
3802 | } | |
c07a80fd | 3803 | goto glob_assign; |
3804 | } | |
ed6116ce | 3805 | break; |
fc36a67e | 3806 | case SVt_PVFM: |
f8c7b90f | 3807 | #ifdef PERL_OLD_COPY_ON_WRITE |
d89fc664 NC |
3808 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
3809 | if (dtype < SVt_PVIV) | |
3810 | sv_upgrade(dstr, SVt_PVIV); | |
3811 | break; | |
3812 | } | |
3813 | /* Fall through */ | |
3814 | #endif | |
3815 | case SVt_PV: | |
8990e307 | 3816 | if (dtype < SVt_PV) |
463ee0b2 | 3817 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
3818 | break; |
3819 | case SVt_PVIV: | |
8990e307 | 3820 | if (dtype < SVt_PVIV) |
463ee0b2 | 3821 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
3822 | break; |
3823 | case SVt_PVNV: | |
8990e307 | 3824 | if (dtype < SVt_PVNV) |
463ee0b2 | 3825 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 3826 | break; |
4633a7c4 LW |
3827 | case SVt_PVAV: |
3828 | case SVt_PVHV: | |
3829 | case SVt_PVCV: | |
4633a7c4 | 3830 | case SVt_PVIO: |
a3b680e6 AL |
3831 | { |
3832 | const char * const type = sv_reftype(sstr,0); | |
533c011a | 3833 | if (PL_op) |
a3b680e6 | 3834 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", type, OP_NAME(PL_op)); |
4633a7c4 | 3835 | else |
a3b680e6 AL |
3836 | Perl_croak(aTHX_ "Bizarre copy of %s", type); |
3837 | } | |
4633a7c4 LW |
3838 | break; |
3839 | ||
79072805 | 3840 | case SVt_PVGV: |
8990e307 | 3841 | if (dtype <= SVt_PVGV) { |
c07a80fd | 3842 | glob_assign: |
a5f75d66 | 3843 | if (dtype != SVt_PVGV) { |
a3b680e6 AL |
3844 | const char * const name = GvNAME(sstr); |
3845 | const STRLEN len = GvNAMELEN(sstr); | |
b76195c2 DM |
3846 | /* don't upgrade SVt_PVLV: it can hold a glob */ |
3847 | if (dtype != SVt_PVLV) | |
3848 | sv_upgrade(dstr, SVt_PVGV); | |
14befaf4 | 3849 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
e15faf7d NC |
3850 | GvSTASH(dstr) = GvSTASH(sstr); |
3851 | if (GvSTASH(dstr)) | |
3852 | Perl_sv_add_backref(aTHX_ (SV*)GvSTASH(dstr), dstr); | |
a0d0e21e LW |
3853 | GvNAME(dstr) = savepvn(name, len); |
3854 | GvNAMELEN(dstr) = len; | |
3855 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
3856 | } | |
7bac28a0 | 3857 | /* ahem, death to those who redefine active sort subs */ |
3280af22 NIS |
3858 | else if (PL_curstackinfo->si_type == PERLSI_SORT |
3859 | && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr))) | |
cea2e8a9 | 3860 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", |
7bac28a0 | 3861 | GvNAME(dstr)); |
5bd07a3d | 3862 | |
7fb37951 AMS |
3863 | #ifdef GV_UNIQUE_CHECK |
3864 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3865 | Perl_croak(aTHX_ PL_no_modify); |
3866 | } | |
3867 | #endif | |
3868 | ||
a0d0e21e | 3869 | (void)SvOK_off(dstr); |
a5f75d66 | 3870 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 3871 | gp_free((GV*)dstr); |
79072805 | 3872 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
3873 | if (SvTAINTED(sstr)) |
3874 | SvTAINT(dstr); | |
1d7c1841 GS |
3875 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3876 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3877 | { | |
a5f75d66 | 3878 | GvIMPORTED_on(dstr); |
1d7c1841 | 3879 | } |
a5f75d66 | 3880 | GvMULTI_on(dstr); |
79072805 LW |
3881 | return; |
3882 | } | |
3883 | /* FALL THROUGH */ | |
3884 | ||
3885 | default: | |
8d6d96c1 | 3886 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 3887 | mg_get(sstr); |
eb160463 | 3888 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
3889 | stype = SvTYPE(sstr); |
3890 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
3891 | goto glob_assign; | |
3892 | } | |
3893 | } | |
ded42b9f | 3894 | if (stype == SVt_PVLV) |
862a34c6 | 3895 | SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 3896 | else |
862a34c6 | 3897 | SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
3898 | } |
3899 | ||
8990e307 LW |
3900 | sflags = SvFLAGS(sstr); |
3901 | ||
3902 | if (sflags & SVf_ROK) { | |
3903 | if (dtype >= SVt_PV) { | |
3904 | if (dtype == SVt_PVGV) { | |
3905 | SV *sref = SvREFCNT_inc(SvRV(sstr)); | |
3906 | SV *dref = 0; | |
a3b680e6 | 3907 | const int intro = GvINTRO(dstr); |
a0d0e21e | 3908 | |
7fb37951 AMS |
3909 | #ifdef GV_UNIQUE_CHECK |
3910 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3911 | Perl_croak(aTHX_ PL_no_modify); |
3912 | } | |
3913 | #endif | |
3914 | ||
a0d0e21e | 3915 | if (intro) { |
a5f75d66 | 3916 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 3917 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 3918 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 3919 | } |
a5f75d66 | 3920 | GvMULTI_on(dstr); |
8990e307 LW |
3921 | switch (SvTYPE(sref)) { |
3922 | case SVt_PVAV: | |
a0d0e21e | 3923 | if (intro) |
890ed176 | 3924 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
3925 | else |
3926 | dref = (SV*)GvAV(dstr); | |
8990e307 | 3927 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 3928 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
3929 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3930 | { | |
a5f75d66 | 3931 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 3932 | } |
8990e307 LW |
3933 | break; |
3934 | case SVt_PVHV: | |
a0d0e21e | 3935 | if (intro) |
890ed176 | 3936 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
3937 | else |
3938 | dref = (SV*)GvHV(dstr); | |
8990e307 | 3939 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 3940 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
3941 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3942 | { | |
a5f75d66 | 3943 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 3944 | } |
8990e307 LW |
3945 | break; |
3946 | case SVt_PVCV: | |
8ebc5c01 | 3947 | if (intro) { |
3948 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
3949 | SvREFCNT_dec(GvCV(dstr)); | |
3950 | GvCV(dstr) = Nullcv; | |
68dc0745 | 3951 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 3952 | PL_sub_generation++; |
8ebc5c01 | 3953 | } |
890ed176 | 3954 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 3955 | } |
68dc0745 | 3956 | else |
3957 | dref = (SV*)GvCV(dstr); | |
3958 | if (GvCV(dstr) != (CV*)sref) { | |
748a9306 | 3959 | CV* cv = GvCV(dstr); |
4633a7c4 | 3960 | if (cv) { |
68dc0745 | 3961 | if (!GvCVGEN((GV*)dstr) && |
3962 | (CvROOT(cv) || CvXSUB(cv))) | |
3963 | { | |
7bac28a0 | 3964 | /* ahem, death to those who redefine |
3965 | * active sort subs */ | |
3280af22 NIS |
3966 | if (PL_curstackinfo->si_type == PERLSI_SORT && |
3967 | PL_sortcop == CvSTART(cv)) | |
1c846c1f | 3968 | Perl_croak(aTHX_ |
7bac28a0 | 3969 | "Can't redefine active sort subroutine %s", |
3970 | GvENAME((GV*)dstr)); | |
beab0874 JT |
3971 | /* Redefining a sub - warning is mandatory if |
3972 | it was a const and its value changed. */ | |
3973 | if (ckWARN(WARN_REDEFINE) | |
3974 | || (CvCONST(cv) | |
3975 | && (!CvCONST((CV*)sref) | |
3976 | || sv_cmp(cv_const_sv(cv), | |
3977 | cv_const_sv((CV*)sref))))) | |
3978 | { | |
9014280d | 3979 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 3980 | CvCONST(cv) |
910764e6 RGS |
3981 | ? "Constant subroutine %s::%s redefined" |
3982 | : "Subroutine %s::%s redefined", | |
bfcb3514 | 3983 | HvNAME_get(GvSTASH((GV*)dstr)), |
beab0874 JT |
3984 | GvENAME((GV*)dstr)); |
3985 | } | |
9607fc9c | 3986 | } |
fb24441d RGS |
3987 | if (!intro) |
3988 | cv_ckproto(cv, (GV*)dstr, | |
93524f2b NC |
3989 | SvPOK(sref) |
3990 | ? SvPVX_const(sref) : Nullch); | |
4633a7c4 | 3991 | } |
a5f75d66 | 3992 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 3993 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 3994 | GvASSUMECV_on(dstr); |
3280af22 | 3995 | PL_sub_generation++; |
a5f75d66 | 3996 | } |
39bac7f7 | 3997 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
3998 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3999 | { | |
a5f75d66 | 4000 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 4001 | } |
8990e307 | 4002 | break; |
91bba347 LW |
4003 | case SVt_PVIO: |
4004 | if (intro) | |
890ed176 | 4005 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
4006 | else |
4007 | dref = (SV*)GvIOp(dstr); | |
4008 | GvIOp(dstr) = (IO*)sref; | |
4009 | break; | |
f4d13ee9 JH |
4010 | case SVt_PVFM: |
4011 | if (intro) | |
890ed176 | 4012 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
4013 | else |
4014 | dref = (SV*)GvFORM(dstr); | |
4015 | GvFORM(dstr) = (CV*)sref; | |
4016 | break; | |
8990e307 | 4017 | default: |
a0d0e21e | 4018 | if (intro) |
890ed176 | 4019 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
4020 | else |
4021 | dref = (SV*)GvSV(dstr); | |
8990e307 | 4022 | GvSV(dstr) = sref; |
39bac7f7 | 4023 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
4024 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4025 | { | |
a5f75d66 | 4026 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 4027 | } |
8990e307 LW |
4028 | break; |
4029 | } | |
4030 | if (dref) | |
4031 | SvREFCNT_dec(dref); | |
27c9684d AP |
4032 | if (SvTAINTED(sstr)) |
4033 | SvTAINT(dstr); | |
8990e307 LW |
4034 | return; |
4035 | } | |
3f7c398e | 4036 | if (SvPVX_const(dstr)) { |
8bd4d4c5 | 4037 | SvPV_free(dstr); |
b162af07 SP |
4038 | SvLEN_set(dstr, 0); |
4039 | SvCUR_set(dstr, 0); | |
a0d0e21e | 4040 | } |
8990e307 | 4041 | } |
a0d0e21e | 4042 | (void)SvOK_off(dstr); |
b162af07 | 4043 | SvRV_set(dstr, SvREFCNT_inc(SvRV(sstr))); |
ed6116ce | 4044 | SvROK_on(dstr); |
8990e307 | 4045 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4046 | SvNOKp_on(dstr); |
4047 | /* Only set the public OK flag if the source has public OK. */ | |
4048 | if (sflags & SVf_NOK) | |
4049 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 4050 | SvNV_set(dstr, SvNVX(sstr)); |
ed6116ce | 4051 | } |
8990e307 | 4052 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4053 | (void)SvIOKp_on(dstr); |
4054 | if (sflags & SVf_IOK) | |
4055 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4056 | if (sflags & SVf_IVisUV) |
25da4f38 | 4057 | SvIsUV_on(dstr); |
45977657 | 4058 | SvIV_set(dstr, SvIVX(sstr)); |
ed6116ce | 4059 | } |
a0d0e21e LW |
4060 | if (SvAMAGIC(sstr)) { |
4061 | SvAMAGIC_on(dstr); | |
4062 | } | |
ed6116ce | 4063 | } |
8990e307 | 4064 | else if (sflags & SVp_POK) { |
765f542d | 4065 | bool isSwipe = 0; |
79072805 LW |
4066 | |
4067 | /* | |
4068 | * Check to see if we can just swipe the string. If so, it's a | |
4069 | * possible small lose on short strings, but a big win on long ones. | |
3f7c398e SP |
4070 | * It might even be a win on short strings if SvPVX_const(dstr) |
4071 | * has to be allocated and SvPVX_const(sstr) has to be freed. | |
79072805 LW |
4072 | */ |
4073 | ||
120fac95 NC |
4074 | /* Whichever path we take through the next code, we want this true, |
4075 | and doing it now facilitates the COW check. */ | |
4076 | (void)SvPOK_only(dstr); | |
4077 | ||
765f542d | 4078 | if ( |
b8f9541a NC |
4079 | /* We're not already COW */ |
4080 | ((sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
f8c7b90f | 4081 | #ifndef PERL_OLD_COPY_ON_WRITE |
b8f9541a NC |
4082 | /* or we are, but dstr isn't a suitable target. */ |
4083 | || (SvFLAGS(dstr) & CAN_COW_MASK) != CAN_COW_FLAGS | |
4084 | #endif | |
4085 | ) | |
765f542d | 4086 | && |
765f542d NC |
4087 | !(isSwipe = |
4088 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
4089 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
5fcdf167 NC |
4090 | (!(flags & SV_NOSTEAL)) && |
4091 | /* and we're allowed to steal temps */ | |
765f542d NC |
4092 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ |
4093 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 4094 | /* and won't be needed again, potentially */ |
765f542d | 4095 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
f8c7b90f | 4096 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 4097 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS |
120fac95 | 4098 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS |
765f542d NC |
4099 | && SvTYPE(sstr) >= SVt_PVIV) |
4100 | #endif | |
4101 | ) { | |
4102 | /* Failed the swipe test, and it's not a shared hash key either. | |
4103 | Have to copy the string. */ | |
4104 | STRLEN len = SvCUR(sstr); | |
4105 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
3f7c398e | 4106 | Move(SvPVX_const(sstr),SvPVX(dstr),len,char); |
765f542d NC |
4107 | SvCUR_set(dstr, len); |
4108 | *SvEND(dstr) = '\0'; | |
765f542d | 4109 | } else { |
f8c7b90f | 4110 | /* If PERL_OLD_COPY_ON_WRITE is not defined, then isSwipe will always |
765f542d | 4111 | be true in here. */ |
765f542d NC |
4112 | /* Either it's a shared hash key, or it's suitable for |
4113 | copy-on-write or we can swipe the string. */ | |
46187eeb | 4114 | if (DEBUG_C_TEST) { |
ed252734 | 4115 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
4116 | sv_dump(sstr); |
4117 | sv_dump(dstr); | |
46187eeb | 4118 | } |
f8c7b90f | 4119 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4120 | if (!isSwipe) { |
4121 | /* I believe I should acquire a global SV mutex if | |
4122 | it's a COW sv (not a shared hash key) to stop | |
4123 | it going un copy-on-write. | |
4124 | If the source SV has gone un copy on write between up there | |
4125 | and down here, then (assert() that) it is of the correct | |
4126 | form to make it copy on write again */ | |
4127 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
4128 | != (SVf_FAKE | SVf_READONLY)) { | |
4129 | SvREADONLY_on(sstr); | |
4130 | SvFAKE_on(sstr); | |
4131 | /* Make the source SV into a loop of 1. | |
4132 | (about to become 2) */ | |
a29f6d03 | 4133 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
4134 | } |
4135 | } | |
4136 | #endif | |
4137 | /* Initial code is common. */ | |
94010e71 NC |
4138 | if (SvPVX_const(dstr)) { /* we know that dtype >= SVt_PV */ |
4139 | SvPV_free(dstr); | |
79072805 | 4140 | } |
765f542d | 4141 | |
765f542d NC |
4142 | if (!isSwipe) { |
4143 | /* making another shared SV. */ | |
4144 | STRLEN cur = SvCUR(sstr); | |
4145 | STRLEN len = SvLEN(sstr); | |
f8c7b90f | 4146 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 4147 | if (len) { |
b8f9541a | 4148 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4149 | /* SvIsCOW_normal */ |
4150 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4151 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4152 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 4153 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
a604c751 NC |
4154 | } else |
4155 | #endif | |
4156 | { | |
765f542d | 4157 | /* SvIsCOW_shared_hash */ |
46187eeb NC |
4158 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4159 | "Copy on write: Sharing hash\n")); | |
b8f9541a | 4160 | |
bdd68bc3 | 4161 | assert (SvTYPE(dstr) >= SVt_PV); |
765f542d | 4162 | SvPV_set(dstr, |
d1db91c6 | 4163 | HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr))))); |
bdd68bc3 | 4164 | } |
87a1ef3d SP |
4165 | SvLEN_set(dstr, len); |
4166 | SvCUR_set(dstr, cur); | |
765f542d NC |
4167 | SvREADONLY_on(dstr); |
4168 | SvFAKE_on(dstr); | |
4169 | /* Relesase a global SV mutex. */ | |
4170 | } | |
4171 | else | |
765f542d | 4172 | { /* Passes the swipe test. */ |
78d1e721 | 4173 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
765f542d NC |
4174 | SvLEN_set(dstr, SvLEN(sstr)); |
4175 | SvCUR_set(dstr, SvCUR(sstr)); | |
4176 | ||
4177 | SvTEMP_off(dstr); | |
4178 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4179 | SvPV_set(sstr, Nullch); | |
4180 | SvLEN_set(sstr, 0); | |
4181 | SvCUR_set(sstr, 0); | |
4182 | SvTEMP_off(sstr); | |
4183 | } | |
4184 | } | |
9aa983d2 | 4185 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4186 | SvUTF8_on(dstr); |
8990e307 | 4187 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4188 | SvNOKp_on(dstr); |
4189 | if (sflags & SVf_NOK) | |
4190 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 4191 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 | 4192 | } |
8990e307 | 4193 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4194 | (void)SvIOKp_on(dstr); |
4195 | if (sflags & SVf_IOK) | |
4196 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4197 | if (sflags & SVf_IVisUV) |
25da4f38 | 4198 | SvIsUV_on(dstr); |
45977657 | 4199 | SvIV_set(dstr, SvIVX(sstr)); |
79072805 | 4200 | } |
92f0c265 | 4201 | if (SvVOK(sstr)) { |
7a5fa8a2 | 4202 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
ece467f9 JP |
4203 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, |
4204 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4205 | SvRMAGICAL_on(dstr); |
7a5fa8a2 | 4206 | } |
79072805 | 4207 | } |
8990e307 | 4208 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4209 | if (sflags & SVf_IOK) |
4210 | (void)SvIOK_only(dstr); | |
4211 | else { | |
9cbac4c7 DM |
4212 | (void)SvOK_off(dstr); |
4213 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4214 | } |
4215 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4216 | if (sflags & SVf_IVisUV) |
25da4f38 | 4217 | SvIsUV_on(dstr); |
45977657 | 4218 | SvIV_set(dstr, SvIVX(sstr)); |
3332b3c1 JH |
4219 | if (sflags & SVp_NOK) { |
4220 | if (sflags & SVf_NOK) | |
4221 | (void)SvNOK_on(dstr); | |
4222 | else | |
4223 | (void)SvNOKp_on(dstr); | |
9d6ce603 | 4224 | SvNV_set(dstr, SvNVX(sstr)); |
3332b3c1 JH |
4225 | } |
4226 | } | |
4227 | else if (sflags & SVp_NOK) { | |
4228 | if (sflags & SVf_NOK) | |
4229 | (void)SvNOK_only(dstr); | |
4230 | else { | |
9cbac4c7 | 4231 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4232 | SvNOKp_on(dstr); |
4233 | } | |
9d6ce603 | 4234 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 LW |
4235 | } |
4236 | else { | |
20408e3c | 4237 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4238 | if (ckWARN(WARN_MISC)) |
9014280d | 4239 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4240 | } |
4241 | else | |
4242 | (void)SvOK_off(dstr); | |
a0d0e21e | 4243 | } |
27c9684d AP |
4244 | if (SvTAINTED(sstr)) |
4245 | SvTAINT(dstr); | |
79072805 LW |
4246 | } |
4247 | ||
954c1994 GS |
4248 | /* |
4249 | =for apidoc sv_setsv_mg | |
4250 | ||
4251 | Like C<sv_setsv>, but also handles 'set' magic. | |
4252 | ||
4253 | =cut | |
4254 | */ | |
4255 | ||
79072805 | 4256 | void |
864dbfa3 | 4257 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4258 | { |
4259 | sv_setsv(dstr,sstr); | |
4260 | SvSETMAGIC(dstr); | |
4261 | } | |
4262 | ||
f8c7b90f | 4263 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
4264 | SV * |
4265 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4266 | { | |
4267 | STRLEN cur = SvCUR(sstr); | |
4268 | STRLEN len = SvLEN(sstr); | |
4269 | register char *new_pv; | |
4270 | ||
4271 | if (DEBUG_C_TEST) { | |
4272 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4273 | sstr, dstr); | |
4274 | sv_dump(sstr); | |
4275 | if (dstr) | |
4276 | sv_dump(dstr); | |
4277 | } | |
4278 | ||
4279 | if (dstr) { | |
4280 | if (SvTHINKFIRST(dstr)) | |
4281 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
3f7c398e SP |
4282 | else if (SvPVX_const(dstr)) |
4283 | Safefree(SvPVX_const(dstr)); | |
ed252734 NC |
4284 | } |
4285 | else | |
4286 | new_SV(dstr); | |
862a34c6 | 4287 | SvUPGRADE(dstr, SVt_PVIV); |
ed252734 NC |
4288 | |
4289 | assert (SvPOK(sstr)); | |
4290 | assert (SvPOKp(sstr)); | |
4291 | assert (!SvIOK(sstr)); | |
4292 | assert (!SvIOKp(sstr)); | |
4293 | assert (!SvNOK(sstr)); | |
4294 | assert (!SvNOKp(sstr)); | |
4295 | ||
4296 | if (SvIsCOW(sstr)) { | |
4297 | ||
4298 | if (SvLEN(sstr) == 0) { | |
4299 | /* source is a COW shared hash key. */ | |
ed252734 NC |
4300 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4301 | "Fast copy on write: Sharing hash\n")); | |
d1db91c6 | 4302 | new_pv = HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)))); |
ed252734 NC |
4303 | goto common_exit; |
4304 | } | |
4305 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4306 | } else { | |
4307 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
862a34c6 | 4308 | SvUPGRADE(sstr, SVt_PVIV); |
ed252734 NC |
4309 | SvREADONLY_on(sstr); |
4310 | SvFAKE_on(sstr); | |
4311 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4312 | "Fast copy on write: Converting sstr to COW\n")); | |
4313 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4314 | } | |
4315 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 4316 | new_pv = SvPVX_mutable(sstr); |
ed252734 NC |
4317 | |
4318 | common_exit: | |
4319 | SvPV_set(dstr, new_pv); | |
4320 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4321 | if (SvUTF8(sstr)) | |
4322 | SvUTF8_on(dstr); | |
87a1ef3d SP |
4323 | SvLEN_set(dstr, len); |
4324 | SvCUR_set(dstr, cur); | |
ed252734 NC |
4325 | if (DEBUG_C_TEST) { |
4326 | sv_dump(dstr); | |
4327 | } | |
4328 | return dstr; | |
4329 | } | |
4330 | #endif | |
4331 | ||
954c1994 GS |
4332 | /* |
4333 | =for apidoc sv_setpvn | |
4334 | ||
4335 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
4336 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
4337 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
4338 | |
4339 | =cut | |
4340 | */ | |
4341 | ||
ef50df4b | 4342 | void |
864dbfa3 | 4343 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4344 | { |
c6f8c383 | 4345 | register char *dptr; |
22c522df | 4346 | |
765f542d | 4347 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4348 | if (!ptr) { |
a0d0e21e | 4349 | (void)SvOK_off(sv); |
463ee0b2 LW |
4350 | return; |
4351 | } | |
22c522df JH |
4352 | else { |
4353 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
a3b680e6 | 4354 | const IV iv = len; |
9c5ffd7c JH |
4355 | if (iv < 0) |
4356 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4357 | } |
862a34c6 | 4358 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4359 | |
5902b6a9 | 4360 | dptr = SvGROW(sv, len + 1); |
c6f8c383 GA |
4361 | Move(ptr,dptr,len,char); |
4362 | dptr[len] = '\0'; | |
79072805 | 4363 | SvCUR_set(sv, len); |
1aa99e6b | 4364 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4365 | SvTAINT(sv); |
79072805 LW |
4366 | } |
4367 | ||
954c1994 GS |
4368 | /* |
4369 | =for apidoc sv_setpvn_mg | |
4370 | ||
4371 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4372 | ||
4373 | =cut | |
4374 | */ | |
4375 | ||
79072805 | 4376 | void |
864dbfa3 | 4377 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4378 | { |
4379 | sv_setpvn(sv,ptr,len); | |
4380 | SvSETMAGIC(sv); | |
4381 | } | |
4382 | ||
954c1994 GS |
4383 | /* |
4384 | =for apidoc sv_setpv | |
4385 | ||
4386 | Copies a string into an SV. The string must be null-terminated. Does not | |
4387 | handle 'set' magic. See C<sv_setpv_mg>. | |
4388 | ||
4389 | =cut | |
4390 | */ | |
4391 | ||
ef50df4b | 4392 | void |
864dbfa3 | 4393 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4394 | { |
4395 | register STRLEN len; | |
4396 | ||
765f542d | 4397 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4398 | if (!ptr) { |
a0d0e21e | 4399 | (void)SvOK_off(sv); |
463ee0b2 LW |
4400 | return; |
4401 | } | |
79072805 | 4402 | len = strlen(ptr); |
862a34c6 | 4403 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4404 | |
79072805 | 4405 | SvGROW(sv, len + 1); |
463ee0b2 | 4406 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4407 | SvCUR_set(sv, len); |
1aa99e6b | 4408 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4409 | SvTAINT(sv); |
4410 | } | |
4411 | ||
954c1994 GS |
4412 | /* |
4413 | =for apidoc sv_setpv_mg | |
4414 | ||
4415 | Like C<sv_setpv>, but also handles 'set' magic. | |
4416 | ||
4417 | =cut | |
4418 | */ | |
4419 | ||
463ee0b2 | 4420 | void |
864dbfa3 | 4421 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4422 | { |
4423 | sv_setpv(sv,ptr); | |
4424 | SvSETMAGIC(sv); | |
4425 | } | |
4426 | ||
954c1994 GS |
4427 | /* |
4428 | =for apidoc sv_usepvn | |
4429 | ||
4430 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4431 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4432 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4433 | string length, C<len>, must be supplied. This function will realloc the | |
4434 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4435 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4436 | See C<sv_usepvn_mg>. | |
4437 | ||
4438 | =cut | |
4439 | */ | |
4440 | ||
ef50df4b | 4441 | void |
864dbfa3 | 4442 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4443 | { |
1936d2a7 | 4444 | STRLEN allocate; |
765f542d | 4445 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
862a34c6 | 4446 | SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4447 | if (!ptr) { |
a0d0e21e | 4448 | (void)SvOK_off(sv); |
463ee0b2 LW |
4449 | return; |
4450 | } | |
3f7c398e | 4451 | if (SvPVX_const(sv)) |
8bd4d4c5 | 4452 | SvPV_free(sv); |
1936d2a7 NC |
4453 | |
4454 | allocate = PERL_STRLEN_ROUNDUP(len + 1); | |
7a9b70e9 | 4455 | ptr = saferealloc (ptr, allocate); |
f880fe2f | 4456 | SvPV_set(sv, ptr); |
463ee0b2 | 4457 | SvCUR_set(sv, len); |
1936d2a7 | 4458 | SvLEN_set(sv, allocate); |
463ee0b2 | 4459 | *SvEND(sv) = '\0'; |
1aa99e6b | 4460 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4461 | SvTAINT(sv); |
79072805 LW |
4462 | } |
4463 | ||
954c1994 GS |
4464 | /* |
4465 | =for apidoc sv_usepvn_mg | |
4466 | ||
4467 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4468 | ||
4469 | =cut | |
4470 | */ | |
4471 | ||
ef50df4b | 4472 | void |
864dbfa3 | 4473 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4474 | { |
51c1089b | 4475 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4476 | SvSETMAGIC(sv); |
4477 | } | |
4478 | ||
f8c7b90f | 4479 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4480 | /* Need to do this *after* making the SV normal, as we need the buffer |
4481 | pointer to remain valid until after we've copied it. If we let go too early, | |
4482 | another thread could invalidate it by unsharing last of the same hash key | |
4483 | (which it can do by means other than releasing copy-on-write Svs) | |
4484 | or by changing the other copy-on-write SVs in the loop. */ | |
4485 | STATIC void | |
bdd68bc3 | 4486 | S_sv_release_COW(pTHX_ register SV *sv, const char *pvx, STRLEN len, SV *after) |
765f542d NC |
4487 | { |
4488 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4489 | /* we need to find the SV pointing to us. */ | |
4490 | SV *current = SV_COW_NEXT_SV(after); | |
7a5fa8a2 | 4491 | |
765f542d NC |
4492 | if (current == sv) { |
4493 | /* The SV we point to points back to us (there were only two of us | |
4494 | in the loop.) | |
4495 | Hence other SV is no longer copy on write either. */ | |
4496 | SvFAKE_off(after); | |
4497 | SvREADONLY_off(after); | |
4498 | } else { | |
4499 | /* We need to follow the pointers around the loop. */ | |
4500 | SV *next; | |
4501 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4502 | assert (next); | |
4503 | current = next; | |
4504 | /* don't loop forever if the structure is bust, and we have | |
4505 | a pointer into a closed loop. */ | |
4506 | assert (current != after); | |
3f7c398e | 4507 | assert (SvPVX_const(current) == pvx); |
765f542d NC |
4508 | } |
4509 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4510 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4511 | } |
4512 | } else { | |
bdd68bc3 | 4513 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); |
765f542d NC |
4514 | } |
4515 | } | |
4516 | ||
4517 | int | |
4518 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4519 | { | |
4520 | if (SvIsCOW(sv)) | |
4521 | sv_force_normal_flags(sv, 0); | |
0c34ef67 MHM |
4522 | SvOOK_off(sv); |
4523 | return 0; | |
765f542d NC |
4524 | } |
4525 | #endif | |
645c22ef DM |
4526 | /* |
4527 | =for apidoc sv_force_normal_flags | |
4528 | ||
4529 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4530 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4531 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4532 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4533 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4534 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4535 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4536 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4537 | with flags set to 0. | |
645c22ef DM |
4538 | |
4539 | =cut | |
4540 | */ | |
4541 | ||
6fc92669 | 4542 | void |
840a7b70 | 4543 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4544 | { |
f8c7b90f | 4545 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4546 | if (SvREADONLY(sv)) { |
4547 | /* At this point I believe I should acquire a global SV mutex. */ | |
4548 | if (SvFAKE(sv)) { | |
a28509cc AL |
4549 | const char *pvx = SvPVX_const(sv); |
4550 | const STRLEN len = SvLEN(sv); | |
4551 | const STRLEN cur = SvCUR(sv); | |
a28509cc | 4552 | SV * const next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ |
46187eeb NC |
4553 | if (DEBUG_C_TEST) { |
4554 | PerlIO_printf(Perl_debug_log, | |
4555 | "Copy on write: Force normal %ld\n", | |
4556 | (long) flags); | |
e419cbc5 | 4557 | sv_dump(sv); |
46187eeb | 4558 | } |
765f542d NC |
4559 | SvFAKE_off(sv); |
4560 | SvREADONLY_off(sv); | |
4561 | /* This SV doesn't own the buffer, so need to New() a new one: */ | |
f880fe2f | 4562 | SvPV_set(sv, (char*)0); |
87a1ef3d | 4563 | SvLEN_set(sv, 0); |
765f542d NC |
4564 | if (flags & SV_COW_DROP_PV) { |
4565 | /* OK, so we don't need to copy our buffer. */ | |
4566 | SvPOK_off(sv); | |
4567 | } else { | |
4568 | SvGROW(sv, cur + 1); | |
4569 | Move(pvx,SvPVX(sv),cur,char); | |
87a1ef3d | 4570 | SvCUR_set(sv, cur); |
765f542d NC |
4571 | *SvEND(sv) = '\0'; |
4572 | } | |
bdd68bc3 | 4573 | sv_release_COW(sv, pvx, len, next); |
46187eeb | 4574 | if (DEBUG_C_TEST) { |
e419cbc5 | 4575 | sv_dump(sv); |
46187eeb | 4576 | } |
765f542d | 4577 | } |
923e4eb5 | 4578 | else if (IN_PERL_RUNTIME) |
765f542d NC |
4579 | Perl_croak(aTHX_ PL_no_modify); |
4580 | /* At this point I believe that I can drop the global SV mutex. */ | |
4581 | } | |
4582 | #else | |
2213622d | 4583 | if (SvREADONLY(sv)) { |
1c846c1f | 4584 | if (SvFAKE(sv)) { |
a433f3d2 | 4585 | const char *pvx = SvPVX_const(sv); |
66a1b24b | 4586 | const STRLEN len = SvCUR(sv); |
10bcdfd6 NC |
4587 | SvFAKE_off(sv); |
4588 | SvREADONLY_off(sv); | |
66a1b24b AL |
4589 | SvPV_set(sv, Nullch); |
4590 | SvLEN_set(sv, 0); | |
1c846c1f | 4591 | SvGROW(sv, len + 1); |
3f7c398e | 4592 | Move(pvx,SvPVX_const(sv),len,char); |
1c846c1f | 4593 | *SvEND(sv) = '\0'; |
bdd68bc3 | 4594 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); |
1c846c1f | 4595 | } |
923e4eb5 | 4596 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 4597 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 4598 | } |
765f542d | 4599 | #endif |
2213622d | 4600 | if (SvROK(sv)) |
840a7b70 | 4601 | sv_unref_flags(sv, flags); |
6fc92669 GS |
4602 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
4603 | sv_unglob(sv); | |
0f15f207 | 4604 | } |
1c846c1f | 4605 | |
645c22ef DM |
4606 | /* |
4607 | =for apidoc sv_force_normal | |
4608 | ||
4609 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4610 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
4611 | an xpvmg. See also C<sv_force_normal_flags>. | |
4612 | ||
4613 | =cut | |
4614 | */ | |
4615 | ||
840a7b70 IZ |
4616 | void |
4617 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
4618 | { | |
4619 | sv_force_normal_flags(sv, 0); | |
4620 | } | |
4621 | ||
954c1994 GS |
4622 | /* |
4623 | =for apidoc sv_chop | |
4624 | ||
1c846c1f | 4625 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
4626 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
4627 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 4628 | string. Uses the "OOK hack". |
3f7c398e | 4629 | Beware: after this function returns, C<ptr> and SvPVX_const(sv) may no longer |
31869a79 | 4630 | refer to the same chunk of data. |
954c1994 GS |
4631 | |
4632 | =cut | |
4633 | */ | |
4634 | ||
79072805 | 4635 | void |
f54cb97a | 4636 | Perl_sv_chop(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4637 | { |
4638 | register STRLEN delta; | |
a0d0e21e | 4639 | if (!ptr || !SvPOKp(sv)) |
79072805 | 4640 | return; |
3f7c398e | 4641 | delta = ptr - SvPVX_const(sv); |
2213622d | 4642 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
4643 | if (SvTYPE(sv) < SVt_PVIV) |
4644 | sv_upgrade(sv,SVt_PVIV); | |
4645 | ||
4646 | if (!SvOOK(sv)) { | |
50483b2c | 4647 | if (!SvLEN(sv)) { /* make copy of shared string */ |
3f7c398e | 4648 | const char *pvx = SvPVX_const(sv); |
a28509cc | 4649 | const STRLEN len = SvCUR(sv); |
50483b2c | 4650 | SvGROW(sv, len + 1); |
3f7c398e | 4651 | Move(pvx,SvPVX_const(sv),len,char); |
50483b2c JD |
4652 | *SvEND(sv) = '\0'; |
4653 | } | |
45977657 | 4654 | SvIV_set(sv, 0); |
a4bfb290 AB |
4655 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
4656 | and we do that anyway inside the SvNIOK_off | |
4657 | */ | |
7a5fa8a2 | 4658 | SvFLAGS(sv) |= SVf_OOK; |
79072805 | 4659 | } |
a4bfb290 | 4660 | SvNIOK_off(sv); |
b162af07 SP |
4661 | SvLEN_set(sv, SvLEN(sv) - delta); |
4662 | SvCUR_set(sv, SvCUR(sv) - delta); | |
f880fe2f | 4663 | SvPV_set(sv, SvPVX(sv) + delta); |
45977657 | 4664 | SvIV_set(sv, SvIVX(sv) + delta); |
79072805 LW |
4665 | } |
4666 | ||
09540bc3 JH |
4667 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); |
4668 | * this function provided for binary compatibility only | |
4669 | */ | |
4670 | ||
4671 | void | |
4672 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
4673 | { | |
4674 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
4675 | } | |
4676 | ||
954c1994 GS |
4677 | /* |
4678 | =for apidoc sv_catpvn | |
4679 | ||
4680 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
4681 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
4682 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 4683 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 4684 | |
8d6d96c1 HS |
4685 | =for apidoc sv_catpvn_flags |
4686 | ||
4687 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
4688 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
4689 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
4690 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
4691 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
4692 | in terms of this function. | |
4693 | ||
4694 | =cut | |
4695 | */ | |
4696 | ||
4697 | void | |
4698 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
4699 | { | |
4700 | STRLEN dlen; | |
f54cb97a | 4701 | const char *dstr = SvPV_force_flags(dsv, dlen, flags); |
8d6d96c1 | 4702 | |
8d6d96c1 HS |
4703 | SvGROW(dsv, dlen + slen + 1); |
4704 | if (sstr == dstr) | |
3f7c398e | 4705 | sstr = SvPVX_const(dsv); |
8d6d96c1 | 4706 | Move(sstr, SvPVX(dsv) + dlen, slen, char); |
b162af07 | 4707 | SvCUR_set(dsv, SvCUR(dsv) + slen); |
8d6d96c1 HS |
4708 | *SvEND(dsv) = '\0'; |
4709 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
4710 | SvTAINT(dsv); | |
79072805 LW |
4711 | } |
4712 | ||
954c1994 GS |
4713 | /* |
4714 | =for apidoc sv_catpvn_mg | |
4715 | ||
4716 | Like C<sv_catpvn>, but also handles 'set' magic. | |
4717 | ||
4718 | =cut | |
4719 | */ | |
4720 | ||
79072805 | 4721 | void |
864dbfa3 | 4722 | Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4723 | { |
4724 | sv_catpvn(sv,ptr,len); | |
4725 | SvSETMAGIC(sv); | |
4726 | } | |
4727 | ||
09540bc3 JH |
4728 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); |
4729 | * this function provided for binary compatibility only | |
4730 | */ | |
4731 | ||
4732 | void | |
4733 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
4734 | { | |
4735 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
4736 | } | |
4737 | ||
954c1994 GS |
4738 | /* |
4739 | =for apidoc sv_catsv | |
4740 | ||
13e8c8e3 JH |
4741 | Concatenates the string from SV C<ssv> onto the end of the string in |
4742 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
4743 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 4744 | |
8d6d96c1 HS |
4745 | =for apidoc sv_catsv_flags |
4746 | ||
4747 | Concatenates the string from SV C<ssv> onto the end of the string in | |
4748 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
4749 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
4750 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
4751 | ||
4752 | =cut */ | |
4753 | ||
ef50df4b | 4754 | void |
8d6d96c1 | 4755 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 4756 | { |
4d84ee25 | 4757 | const char *spv; |
13e8c8e3 | 4758 | STRLEN slen; |
46199a12 | 4759 | if (!ssv) |
79072805 | 4760 | return; |
4d84ee25 | 4761 | if ((spv = SvPV_const(ssv, slen))) { |
4fd84b44 AD |
4762 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
4763 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
8cf8f3d1 NIS |
4764 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously |
4765 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4fd84b44 AD |
4766 | dsv->sv_flags doesn't have that bit set. |
4767 | Andy Dougherty 12 Oct 2001 | |
4768 | */ | |
b464bac0 | 4769 | const I32 sutf8 = DO_UTF8(ssv); |
4fd84b44 | 4770 | I32 dutf8; |
13e8c8e3 | 4771 | |
8d6d96c1 HS |
4772 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
4773 | mg_get(dsv); | |
4774 | dutf8 = DO_UTF8(dsv); | |
4775 | ||
4776 | if (dutf8 != sutf8) { | |
13e8c8e3 | 4777 | if (dutf8) { |
46199a12 | 4778 | /* Not modifying source SV, so taking a temporary copy. */ |
8d6d96c1 | 4779 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 4780 | |
46199a12 | 4781 | sv_utf8_upgrade(csv); |
93524f2b | 4782 | spv = SvPV_const(csv, slen); |
13e8c8e3 | 4783 | } |
8d6d96c1 HS |
4784 | else |
4785 | sv_utf8_upgrade_nomg(dsv); | |
e84ff256 | 4786 | } |
8d6d96c1 | 4787 | sv_catpvn_nomg(dsv, spv, slen); |
560a288e | 4788 | } |
79072805 LW |
4789 | } |
4790 | ||
954c1994 GS |
4791 | /* |
4792 | =for apidoc sv_catsv_mg | |
4793 | ||
4794 | Like C<sv_catsv>, but also handles 'set' magic. | |
4795 | ||
4796 | =cut | |
4797 | */ | |
4798 | ||
79072805 | 4799 | void |
46199a12 | 4800 | Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv) |
ef50df4b | 4801 | { |
46199a12 JH |
4802 | sv_catsv(dsv,ssv); |
4803 | SvSETMAGIC(dsv); | |
ef50df4b GS |
4804 | } |
4805 | ||
954c1994 GS |
4806 | /* |
4807 | =for apidoc sv_catpv | |
4808 | ||
4809 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
4810 | If the SV has the UTF-8 status set, then the bytes appended should be |
4811 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 4812 | |
d5ce4a7c | 4813 | =cut */ |
954c1994 | 4814 | |
ef50df4b | 4815 | void |
0c981600 | 4816 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4817 | { |
4818 | register STRLEN len; | |
463ee0b2 | 4819 | STRLEN tlen; |
748a9306 | 4820 | char *junk; |
79072805 | 4821 | |
0c981600 | 4822 | if (!ptr) |
79072805 | 4823 | return; |
748a9306 | 4824 | junk = SvPV_force(sv, tlen); |
0c981600 | 4825 | len = strlen(ptr); |
463ee0b2 | 4826 | SvGROW(sv, tlen + len + 1); |
0c981600 | 4827 | if (ptr == junk) |
3f7c398e | 4828 | ptr = SvPVX_const(sv); |
0c981600 | 4829 | Move(ptr,SvPVX(sv)+tlen,len+1,char); |
b162af07 | 4830 | SvCUR_set(sv, SvCUR(sv) + len); |
d41ff1b8 | 4831 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4832 | SvTAINT(sv); |
79072805 LW |
4833 | } |
4834 | ||
954c1994 GS |
4835 | /* |
4836 | =for apidoc sv_catpv_mg | |
4837 | ||
4838 | Like C<sv_catpv>, but also handles 'set' magic. | |
4839 | ||
4840 | =cut | |
4841 | */ | |
4842 | ||
ef50df4b | 4843 | void |
0c981600 | 4844 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 4845 | { |
0c981600 | 4846 | sv_catpv(sv,ptr); |
ef50df4b GS |
4847 | SvSETMAGIC(sv); |
4848 | } | |
4849 | ||
645c22ef DM |
4850 | /* |
4851 | =for apidoc newSV | |
4852 | ||
4853 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
4854 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
4855 | macro. | |
4856 | ||
4857 | =cut | |
4858 | */ | |
4859 | ||
79072805 | 4860 | SV * |
864dbfa3 | 4861 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
4862 | { |
4863 | register SV *sv; | |
1c846c1f | 4864 | |
4561caa4 | 4865 | new_SV(sv); |
79072805 LW |
4866 | if (len) { |
4867 | sv_upgrade(sv, SVt_PV); | |
4868 | SvGROW(sv, len + 1); | |
4869 | } | |
4870 | return sv; | |
4871 | } | |
954c1994 | 4872 | /* |
92110913 | 4873 | =for apidoc sv_magicext |
954c1994 | 4874 | |
68795e93 | 4875 | Adds magic to an SV, upgrading it if necessary. Applies the |
2d8d5d5a | 4876 | supplied vtable and returns a pointer to the magic added. |
92110913 | 4877 | |
2d8d5d5a SH |
4878 | Note that C<sv_magicext> will allow things that C<sv_magic> will not. |
4879 | In particular, you can add magic to SvREADONLY SVs, and add more than | |
4880 | one instance of the same 'how'. | |
645c22ef | 4881 | |
2d8d5d5a SH |
4882 | If C<namlen> is greater than zero then a C<savepvn> I<copy> of C<name> is |
4883 | stored, if C<namlen> is zero then C<name> is stored as-is and - as another | |
4884 | special case - if C<(name && namlen == HEf_SVKEY)> then C<name> is assumed | |
4885 | to contain an C<SV*> and is stored as-is with its REFCNT incremented. | |
92110913 | 4886 | |
2d8d5d5a | 4887 | (This is now used as a subroutine by C<sv_magic>.) |
954c1994 GS |
4888 | |
4889 | =cut | |
4890 | */ | |
92110913 | 4891 | MAGIC * |
e1ec3a88 | 4892 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, const MGVTBL *vtable, |
92110913 | 4893 | const char* name, I32 namlen) |
79072805 LW |
4894 | { |
4895 | MAGIC* mg; | |
68795e93 | 4896 | |
92110913 | 4897 | if (SvTYPE(sv) < SVt_PVMG) { |
862a34c6 | 4898 | SvUPGRADE(sv, SVt_PVMG); |
463ee0b2 | 4899 | } |
79072805 LW |
4900 | Newz(702,mg, 1, MAGIC); |
4901 | mg->mg_moremagic = SvMAGIC(sv); | |
b162af07 | 4902 | SvMAGIC_set(sv, mg); |
75f9d97a | 4903 | |
05f95b08 SB |
4904 | /* Sometimes a magic contains a reference loop, where the sv and |
4905 | object refer to each other. To prevent a reference loop that | |
4906 | would prevent such objects being freed, we look for such loops | |
4907 | and if we find one we avoid incrementing the object refcount. | |
87f0b213 JH |
4908 | |
4909 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 4910 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
4911 | |
4912 | */ | |
14befaf4 DM |
4913 | if (!obj || obj == sv || |
4914 | how == PERL_MAGIC_arylen || | |
4915 | how == PERL_MAGIC_qr || | |
8d2f4536 | 4916 | how == PERL_MAGIC_symtab || |
75f9d97a JH |
4917 | (SvTYPE(obj) == SVt_PVGV && |
4918 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
4919 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 4920 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 4921 | { |
8990e307 | 4922 | mg->mg_obj = obj; |
75f9d97a | 4923 | } |
85e6fe83 | 4924 | else { |
8990e307 | 4925 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
4926 | mg->mg_flags |= MGf_REFCOUNTED; |
4927 | } | |
b5ccf5f2 YST |
4928 | |
4929 | /* Normal self-ties simply pass a null object, and instead of | |
4930 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
4931 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
4932 | with an RV obj pointing to the glob containing the PVIO. In | |
4933 | this case, to avoid a reference loop, we need to weaken the | |
4934 | reference. | |
4935 | */ | |
4936 | ||
4937 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
4938 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
4939 | { | |
4940 | sv_rvweaken(obj); | |
4941 | } | |
4942 | ||
79072805 | 4943 | mg->mg_type = how; |
565764a8 | 4944 | mg->mg_len = namlen; |
9cbac4c7 | 4945 | if (name) { |
92110913 | 4946 | if (namlen > 0) |
1edc1566 | 4947 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 4948 | else if (namlen == HEf_SVKEY) |
1edc1566 | 4949 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 4950 | else |
92110913 | 4951 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 4952 | } |
92110913 | 4953 | mg->mg_virtual = vtable; |
68795e93 | 4954 | |
92110913 NIS |
4955 | mg_magical(sv); |
4956 | if (SvGMAGICAL(sv)) | |
4957 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
4958 | return mg; | |
4959 | } | |
4960 | ||
4961 | /* | |
4962 | =for apidoc sv_magic | |
1c846c1f | 4963 | |
92110913 NIS |
4964 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
4965 | then adds a new magic item of type C<how> to the head of the magic list. | |
4966 | ||
2d8d5d5a SH |
4967 | See C<sv_magicext> (which C<sv_magic> now calls) for a description of the |
4968 | handling of the C<name> and C<namlen> arguments. | |
4969 | ||
4509d3fb SB |
4970 | You need to use C<sv_magicext> to add magic to SvREADONLY SVs and also |
4971 | to add more than one instance of the same 'how'. | |
4972 | ||
92110913 NIS |
4973 | =cut |
4974 | */ | |
4975 | ||
4976 | void | |
4977 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 4978 | { |
e1ec3a88 | 4979 | const MGVTBL *vtable = 0; |
92110913 | 4980 | MAGIC* mg; |
92110913 | 4981 | |
f8c7b90f | 4982 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4983 | if (SvIsCOW(sv)) |
4984 | sv_force_normal_flags(sv, 0); | |
4985 | #endif | |
92110913 | 4986 | if (SvREADONLY(sv)) { |
d8084ca5 DM |
4987 | if ( |
4988 | /* its okay to attach magic to shared strings; the subsequent | |
4989 | * upgrade to PVMG will unshare the string */ | |
4990 | !(SvFAKE(sv) && SvTYPE(sv) < SVt_PVMG) | |
4991 | ||
4992 | && IN_PERL_RUNTIME | |
92110913 NIS |
4993 | && how != PERL_MAGIC_regex_global |
4994 | && how != PERL_MAGIC_bm | |
4995 | && how != PERL_MAGIC_fm | |
4996 | && how != PERL_MAGIC_sv | |
e6469971 | 4997 | && how != PERL_MAGIC_backref |
92110913 NIS |
4998 | ) |
4999 | { | |
5000 | Perl_croak(aTHX_ PL_no_modify); | |
5001 | } | |
5002 | } | |
5003 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
5004 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
5005 | /* sv_magic() refuses to add a magic of the same 'how' as an |
5006 | existing one | |
92110913 NIS |
5007 | */ |
5008 | if (how == PERL_MAGIC_taint) | |
5009 | mg->mg_len |= 1; | |
5010 | return; | |
5011 | } | |
5012 | } | |
68795e93 | 5013 | |
79072805 | 5014 | switch (how) { |
14befaf4 | 5015 | case PERL_MAGIC_sv: |
92110913 | 5016 | vtable = &PL_vtbl_sv; |
79072805 | 5017 | break; |
14befaf4 | 5018 | case PERL_MAGIC_overload: |
92110913 | 5019 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 5020 | break; |
14befaf4 | 5021 | case PERL_MAGIC_overload_elem: |
92110913 | 5022 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 5023 | break; |
14befaf4 | 5024 | case PERL_MAGIC_overload_table: |
92110913 | 5025 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 5026 | break; |
14befaf4 | 5027 | case PERL_MAGIC_bm: |
92110913 | 5028 | vtable = &PL_vtbl_bm; |
79072805 | 5029 | break; |
14befaf4 | 5030 | case PERL_MAGIC_regdata: |
92110913 | 5031 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 5032 | break; |
14befaf4 | 5033 | case PERL_MAGIC_regdatum: |
92110913 | 5034 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 5035 | break; |
14befaf4 | 5036 | case PERL_MAGIC_env: |
92110913 | 5037 | vtable = &PL_vtbl_env; |
79072805 | 5038 | break; |
14befaf4 | 5039 | case PERL_MAGIC_fm: |
92110913 | 5040 | vtable = &PL_vtbl_fm; |
55497cff | 5041 | break; |
14befaf4 | 5042 | case PERL_MAGIC_envelem: |
92110913 | 5043 | vtable = &PL_vtbl_envelem; |
79072805 | 5044 | break; |
14befaf4 | 5045 | case PERL_MAGIC_regex_global: |
92110913 | 5046 | vtable = &PL_vtbl_mglob; |
93a17b20 | 5047 | break; |
14befaf4 | 5048 | case PERL_MAGIC_isa: |
92110913 | 5049 | vtable = &PL_vtbl_isa; |
463ee0b2 | 5050 | break; |
14befaf4 | 5051 | case PERL_MAGIC_isaelem: |
92110913 | 5052 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 5053 | break; |
14befaf4 | 5054 | case PERL_MAGIC_nkeys: |
92110913 | 5055 | vtable = &PL_vtbl_nkeys; |
16660edb | 5056 | break; |
14befaf4 | 5057 | case PERL_MAGIC_dbfile: |
92110913 | 5058 | vtable = 0; |
93a17b20 | 5059 | break; |
14befaf4 | 5060 | case PERL_MAGIC_dbline: |
92110913 | 5061 | vtable = &PL_vtbl_dbline; |
79072805 | 5062 | break; |
36477c24 | 5063 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 5064 | case PERL_MAGIC_collxfrm: |
92110913 | 5065 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 5066 | break; |
36477c24 | 5067 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 5068 | case PERL_MAGIC_tied: |
92110913 | 5069 | vtable = &PL_vtbl_pack; |
463ee0b2 | 5070 | break; |
14befaf4 DM |
5071 | case PERL_MAGIC_tiedelem: |
5072 | case PERL_MAGIC_tiedscalar: | |
92110913 | 5073 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 5074 | break; |
14befaf4 | 5075 | case PERL_MAGIC_qr: |
92110913 | 5076 | vtable = &PL_vtbl_regexp; |
c277df42 | 5077 | break; |
14befaf4 | 5078 | case PERL_MAGIC_sig: |
92110913 | 5079 | vtable = &PL_vtbl_sig; |
79072805 | 5080 | break; |
14befaf4 | 5081 | case PERL_MAGIC_sigelem: |
92110913 | 5082 | vtable = &PL_vtbl_sigelem; |
79072805 | 5083 | break; |
14befaf4 | 5084 | case PERL_MAGIC_taint: |
92110913 | 5085 | vtable = &PL_vtbl_taint; |
463ee0b2 | 5086 | break; |
14befaf4 | 5087 | case PERL_MAGIC_uvar: |
92110913 | 5088 | vtable = &PL_vtbl_uvar; |
79072805 | 5089 | break; |
14befaf4 | 5090 | case PERL_MAGIC_vec: |
92110913 | 5091 | vtable = &PL_vtbl_vec; |
79072805 | 5092 | break; |
a3874608 | 5093 | case PERL_MAGIC_arylen_p: |
bfcb3514 | 5094 | case PERL_MAGIC_rhash: |
8d2f4536 | 5095 | case PERL_MAGIC_symtab: |
ece467f9 JP |
5096 | case PERL_MAGIC_vstring: |
5097 | vtable = 0; | |
5098 | break; | |
7e8c5dac HS |
5099 | case PERL_MAGIC_utf8: |
5100 | vtable = &PL_vtbl_utf8; | |
5101 | break; | |
14befaf4 | 5102 | case PERL_MAGIC_substr: |
92110913 | 5103 | vtable = &PL_vtbl_substr; |
79072805 | 5104 | break; |
14befaf4 | 5105 | case PERL_MAGIC_defelem: |
92110913 | 5106 | vtable = &PL_vtbl_defelem; |
5f05dabc | 5107 | break; |
14befaf4 | 5108 | case PERL_MAGIC_glob: |
92110913 | 5109 | vtable = &PL_vtbl_glob; |
79072805 | 5110 | break; |
14befaf4 | 5111 | case PERL_MAGIC_arylen: |
92110913 | 5112 | vtable = &PL_vtbl_arylen; |
79072805 | 5113 | break; |
14befaf4 | 5114 | case PERL_MAGIC_pos: |
92110913 | 5115 | vtable = &PL_vtbl_pos; |
a0d0e21e | 5116 | break; |
14befaf4 | 5117 | case PERL_MAGIC_backref: |
92110913 | 5118 | vtable = &PL_vtbl_backref; |
810b8aa5 | 5119 | break; |
14befaf4 DM |
5120 | case PERL_MAGIC_ext: |
5121 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
5122 | /* Useful for attaching extension internal data to perl vars. */ |
5123 | /* Note that multiple extensions may clash if magical scalars */ | |
5124 | /* etc holding private data from one are passed to another. */ | |
a0d0e21e | 5125 | break; |
79072805 | 5126 | default: |
14befaf4 | 5127 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 5128 | } |
68795e93 | 5129 | |
92110913 | 5130 | /* Rest of work is done else where */ |
27da23d5 | 5131 | mg = sv_magicext(sv,obj,how,(MGVTBL*)vtable,name,namlen); |
68795e93 | 5132 | |
92110913 NIS |
5133 | switch (how) { |
5134 | case PERL_MAGIC_taint: | |
5135 | mg->mg_len = 1; | |
5136 | break; | |
5137 | case PERL_MAGIC_ext: | |
5138 | case PERL_MAGIC_dbfile: | |
5139 | SvRMAGICAL_on(sv); | |
5140 | break; | |
5141 | } | |
463ee0b2 LW |
5142 | } |
5143 | ||
c461cf8f JH |
5144 | /* |
5145 | =for apidoc sv_unmagic | |
5146 | ||
645c22ef | 5147 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
5148 | |
5149 | =cut | |
5150 | */ | |
5151 | ||
463ee0b2 | 5152 | int |
864dbfa3 | 5153 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
5154 | { |
5155 | MAGIC* mg; | |
5156 | MAGIC** mgp; | |
91bba347 | 5157 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
5158 | return 0; |
5159 | mgp = &SvMAGIC(sv); | |
5160 | for (mg = *mgp; mg; mg = *mgp) { | |
5161 | if (mg->mg_type == type) { | |
e1ec3a88 | 5162 | const MGVTBL* const vtbl = mg->mg_virtual; |
463ee0b2 | 5163 | *mgp = mg->mg_moremagic; |
1d7c1841 | 5164 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 5165 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 5166 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 5167 | if (mg->mg_len > 0) |
1edc1566 | 5168 | Safefree(mg->mg_ptr); |
565764a8 | 5169 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 5170 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
5171 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
5172 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 5173 | } |
a0d0e21e LW |
5174 | if (mg->mg_flags & MGf_REFCOUNTED) |
5175 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5176 | Safefree(mg); |
5177 | } | |
5178 | else | |
5179 | mgp = &mg->mg_moremagic; | |
79072805 | 5180 | } |
91bba347 | 5181 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5182 | SvMAGICAL_off(sv); |
06759ea0 | 5183 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5184 | } |
5185 | ||
5186 | return 0; | |
79072805 LW |
5187 | } |
5188 | ||
c461cf8f JH |
5189 | /* |
5190 | =for apidoc sv_rvweaken | |
5191 | ||
645c22ef DM |
5192 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5193 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5194 | push a back-reference to this RV onto the array of backreferences | |
5195 | associated with that magic. | |
c461cf8f JH |
5196 | |
5197 | =cut | |
5198 | */ | |
5199 | ||
810b8aa5 | 5200 | SV * |
864dbfa3 | 5201 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5202 | { |
5203 | SV *tsv; | |
5204 | if (!SvOK(sv)) /* let undefs pass */ | |
5205 | return sv; | |
5206 | if (!SvROK(sv)) | |
cea2e8a9 | 5207 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5208 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5209 | if (ckWARN(WARN_MISC)) |
9014280d | 5210 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5211 | return sv; |
5212 | } | |
5213 | tsv = SvRV(sv); | |
e15faf7d | 5214 | Perl_sv_add_backref(aTHX_ tsv, sv); |
810b8aa5 | 5215 | SvWEAKREF_on(sv); |
1c846c1f | 5216 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5217 | return sv; |
5218 | } | |
5219 | ||
645c22ef DM |
5220 | /* Give tsv backref magic if it hasn't already got it, then push a |
5221 | * back-reference to sv onto the array associated with the backref magic. | |
5222 | */ | |
5223 | ||
e15faf7d NC |
5224 | void |
5225 | Perl_sv_add_backref(pTHX_ SV *tsv, SV *sv) | |
810b8aa5 GS |
5226 | { |
5227 | AV *av; | |
5228 | MAGIC *mg; | |
14befaf4 | 5229 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5230 | av = (AV*)mg->mg_obj; |
5231 | else { | |
5232 | av = newAV(); | |
14befaf4 | 5233 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
d99b02a1 DM |
5234 | /* av now has a refcnt of 2, which avoids it getting freed |
5235 | * before us during global cleanup. The extra ref is removed | |
5236 | * by magic_killbackrefs() when tsv is being freed */ | |
810b8aa5 | 5237 | } |
d91d49e8 | 5238 | if (AvFILLp(av) >= AvMAX(av)) { |
d91d49e8 MM |
5239 | av_extend(av, AvFILLp(av)+1); |
5240 | } | |
5241 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5242 | } |
5243 | ||
645c22ef DM |
5244 | /* delete a back-reference to ourselves from the backref magic associated |
5245 | * with the SV we point to. | |
5246 | */ | |
5247 | ||
1c846c1f | 5248 | STATIC void |
e15faf7d | 5249 | S_sv_del_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5250 | { |
5251 | AV *av; | |
5252 | SV **svp; | |
5253 | I32 i; | |
c04a4dfe | 5254 | MAGIC *mg = NULL; |
e15faf7d NC |
5255 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) { |
5256 | if (PL_in_clean_all) | |
5257 | return; | |
5258 | } | |
14befaf4 | 5259 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5260 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5261 | av = (AV *)mg->mg_obj; |
5262 | svp = AvARRAY(av); | |
6a76db8b NC |
5263 | /* We shouldn't be in here more than once, but for paranoia reasons lets |
5264 | not assume this. */ | |
5265 | for (i = AvFILLp(av); i >= 0; i--) { | |
5266 | if (svp[i] == sv) { | |
5267 | const SSize_t fill = AvFILLp(av); | |
5268 | if (i != fill) { | |
5269 | /* We weren't the last entry. | |
5270 | An unordered list has this property that you can take the | |
5271 | last element off the end to fill the hole, and it's still | |
5272 | an unordered list :-) | |
5273 | */ | |
5274 | svp[i] = svp[fill]; | |
5275 | } | |
5276 | svp[fill] = Nullsv; | |
5277 | AvFILLp(av) = fill - 1; | |
5278 | } | |
5279 | } | |
810b8aa5 GS |
5280 | } |
5281 | ||
954c1994 GS |
5282 | /* |
5283 | =for apidoc sv_insert | |
5284 | ||
5285 | Inserts a string at the specified offset/length within the SV. Similar to | |
5286 | the Perl substr() function. | |
5287 | ||
5288 | =cut | |
5289 | */ | |
5290 | ||
79072805 | 5291 | void |
e1ec3a88 | 5292 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, const char *little, STRLEN littlelen) |
79072805 LW |
5293 | { |
5294 | register char *big; | |
5295 | register char *mid; | |
5296 | register char *midend; | |
5297 | register char *bigend; | |
5298 | register I32 i; | |
6ff81951 | 5299 | STRLEN curlen; |
1c846c1f | 5300 | |
79072805 | 5301 | |
8990e307 | 5302 | if (!bigstr) |
cea2e8a9 | 5303 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5304 | SvPV_force(bigstr, curlen); |
60fa28ff | 5305 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5306 | if (offset + len > curlen) { |
5307 | SvGROW(bigstr, offset+len+1); | |
93524f2b | 5308 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); |
6ff81951 GS |
5309 | SvCUR_set(bigstr, offset+len); |
5310 | } | |
79072805 | 5311 | |
69b47968 | 5312 | SvTAINT(bigstr); |
79072805 LW |
5313 | i = littlelen - len; |
5314 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5315 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5316 | mid = big + offset + len; |
5317 | midend = bigend = big + SvCUR(bigstr); | |
5318 | bigend += i; | |
5319 | *bigend = '\0'; | |
5320 | while (midend > mid) /* shove everything down */ | |
5321 | *--bigend = *--midend; | |
5322 | Move(little,big+offset,littlelen,char); | |
b162af07 | 5323 | SvCUR_set(bigstr, SvCUR(bigstr) + i); |
79072805 LW |
5324 | SvSETMAGIC(bigstr); |
5325 | return; | |
5326 | } | |
5327 | else if (i == 0) { | |
463ee0b2 | 5328 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5329 | SvSETMAGIC(bigstr); |
5330 | return; | |
5331 | } | |
5332 | ||
463ee0b2 | 5333 | big = SvPVX(bigstr); |
79072805 LW |
5334 | mid = big + offset; |
5335 | midend = mid + len; | |
5336 | bigend = big + SvCUR(bigstr); | |
5337 | ||
5338 | if (midend > bigend) | |
cea2e8a9 | 5339 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5340 | |
5341 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5342 | if (littlelen) { | |
5343 | Move(little, mid, littlelen,char); | |
5344 | mid += littlelen; | |
5345 | } | |
5346 | i = bigend - midend; | |
5347 | if (i > 0) { | |
5348 | Move(midend, mid, i,char); | |
5349 | mid += i; | |
5350 | } | |
5351 | *mid = '\0'; | |
5352 | SvCUR_set(bigstr, mid - big); | |
5353 | } | |
155aba94 | 5354 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5355 | midend -= littlelen; |
5356 | mid = midend; | |
5357 | sv_chop(bigstr,midend-i); | |
5358 | big += i; | |
5359 | while (i--) | |
5360 | *--midend = *--big; | |
5361 | if (littlelen) | |
5362 | Move(little, mid, littlelen,char); | |
5363 | } | |
5364 | else if (littlelen) { | |
5365 | midend -= littlelen; | |
5366 | sv_chop(bigstr,midend); | |
5367 | Move(little,midend,littlelen,char); | |
5368 | } | |
5369 | else { | |
5370 | sv_chop(bigstr,midend); | |
5371 | } | |
5372 | SvSETMAGIC(bigstr); | |
5373 | } | |
5374 | ||
c461cf8f JH |
5375 | /* |
5376 | =for apidoc sv_replace | |
5377 | ||
5378 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5379 | The target SV physically takes over ownership of the body of the source SV |
5380 | and inherits its flags; however, the target keeps any magic it owns, | |
5381 | and any magic in the source is discarded. | |
ff276b08 | 5382 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5383 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5384 | |
5385 | =cut | |
5386 | */ | |
79072805 LW |
5387 | |
5388 | void | |
864dbfa3 | 5389 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 | 5390 | { |
a3b680e6 | 5391 | const U32 refcnt = SvREFCNT(sv); |
765f542d | 5392 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
0453d815 | 5393 | if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL)) |
9014280d | 5394 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Reference miscount in sv_replace()"); |
93a17b20 | 5395 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5396 | if (SvMAGICAL(nsv)) |
5397 | mg_free(nsv); | |
5398 | else | |
5399 | sv_upgrade(nsv, SVt_PVMG); | |
b162af07 | 5400 | SvMAGIC_set(nsv, SvMAGIC(sv)); |
a0d0e21e | 5401 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 | 5402 | SvMAGICAL_off(sv); |
b162af07 | 5403 | SvMAGIC_set(sv, NULL); |
93a17b20 | 5404 | } |
79072805 LW |
5405 | SvREFCNT(sv) = 0; |
5406 | sv_clear(sv); | |
477f5d66 | 5407 | assert(!SvREFCNT(sv)); |
fd0854ff DM |
5408 | #ifdef DEBUG_LEAKING_SCALARS |
5409 | sv->sv_flags = nsv->sv_flags; | |
5410 | sv->sv_any = nsv->sv_any; | |
5411 | sv->sv_refcnt = nsv->sv_refcnt; | |
f34d0642 | 5412 | sv->sv_u = nsv->sv_u; |
fd0854ff | 5413 | #else |
79072805 | 5414 | StructCopy(nsv,sv,SV); |
fd0854ff | 5415 | #endif |
7b2c381c NC |
5416 | /* Currently could join these into one piece of pointer arithmetic, but |
5417 | it would be unclear. */ | |
5418 | if(SvTYPE(sv) == SVt_IV) | |
5419 | SvANY(sv) | |
339049b0 | 5420 | = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
7b2c381c | 5421 | else if (SvTYPE(sv) == SVt_RV) { |
339049b0 | 5422 | SvANY(sv) = &sv->sv_u.svu_rv; |
7b2c381c NC |
5423 | } |
5424 | ||
fd0854ff | 5425 | |
f8c7b90f | 5426 | #ifdef PERL_OLD_COPY_ON_WRITE |
d3d0e6f1 NC |
5427 | if (SvIsCOW_normal(nsv)) { |
5428 | /* We need to follow the pointers around the loop to make the | |
5429 | previous SV point to sv, rather than nsv. */ | |
5430 | SV *next; | |
5431 | SV *current = nsv; | |
5432 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5433 | assert(next); | |
5434 | current = next; | |
3f7c398e | 5435 | assert(SvPVX_const(current) == SvPVX_const(nsv)); |
d3d0e6f1 NC |
5436 | } |
5437 | /* Make the SV before us point to the SV after us. */ | |
5438 | if (DEBUG_C_TEST) { | |
5439 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5440 | sv_dump(current); | |
a29f6d03 NC |
5441 | PerlIO_printf(Perl_debug_log, |
5442 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5443 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5444 | } | |
a29f6d03 | 5445 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5446 | } |
5447 | #endif | |
79072805 | 5448 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5449 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 5450 | SvREFCNT(nsv) = 0; |
463ee0b2 | 5451 | del_SV(nsv); |
79072805 LW |
5452 | } |
5453 | ||
c461cf8f JH |
5454 | /* |
5455 | =for apidoc sv_clear | |
5456 | ||
645c22ef DM |
5457 | Clear an SV: call any destructors, free up any memory used by the body, |
5458 | and free the body itself. The SV's head is I<not> freed, although | |
5459 | its type is set to all 1's so that it won't inadvertently be assumed | |
5460 | to be live during global destruction etc. | |
5461 | This function should only be called when REFCNT is zero. Most of the time | |
5462 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5463 | instead. | |
c461cf8f JH |
5464 | |
5465 | =cut | |
5466 | */ | |
5467 | ||
79072805 | 5468 | void |
864dbfa3 | 5469 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5470 | { |
27da23d5 | 5471 | dVAR; |
ec12f114 | 5472 | HV* stash; |
79072805 LW |
5473 | assert(sv); |
5474 | assert(SvREFCNT(sv) == 0); | |
5475 | ||
ed6116ce | 5476 | if (SvOBJECT(sv)) { |
3280af22 | 5477 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5478 | dSP; |
d460ef45 | 5479 | do { |
b464bac0 | 5480 | CV* destructor; |
4e8e7886 | 5481 | stash = SvSTASH(sv); |
32251b26 | 5482 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5483 | if (destructor) { |
1b6737cc | 5484 | SV* const tmpref = newRV(sv); |
5cc433a6 | 5485 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ |
4e8e7886 | 5486 | ENTER; |
e788e7d3 | 5487 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5488 | EXTEND(SP, 2); |
5489 | PUSHMARK(SP); | |
5cc433a6 | 5490 | PUSHs(tmpref); |
4e8e7886 | 5491 | PUTBACK; |
44389ee9 | 5492 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
7a5fa8a2 NIS |
5493 | |
5494 | ||
d3acc0f7 | 5495 | POPSTACK; |
3095d977 | 5496 | SPAGAIN; |
4e8e7886 | 5497 | LEAVE; |
5cc433a6 AB |
5498 | if(SvREFCNT(tmpref) < 2) { |
5499 | /* tmpref is not kept alive! */ | |
5500 | SvREFCNT(sv)--; | |
b162af07 | 5501 | SvRV_set(tmpref, NULL); |
5cc433a6 AB |
5502 | SvROK_off(tmpref); |
5503 | } | |
5504 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5505 | } |
5506 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5507 | |
6f44e0a4 JP |
5508 | |
5509 | if (SvREFCNT(sv)) { | |
5510 | if (PL_in_clean_objs) | |
cea2e8a9 | 5511 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
bfcb3514 | 5512 | HvNAME_get(stash)); |
6f44e0a4 JP |
5513 | /* DESTROY gave object new lease on life */ |
5514 | return; | |
5515 | } | |
a0d0e21e | 5516 | } |
4e8e7886 | 5517 | |
a0d0e21e | 5518 | if (SvOBJECT(sv)) { |
4e8e7886 | 5519 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e LW |
5520 | SvOBJECT_off(sv); /* Curse the object. */ |
5521 | if (SvTYPE(sv) != SVt_PVIO) | |
3280af22 | 5522 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5523 | } |
463ee0b2 | 5524 | } |
524189f1 JH |
5525 | if (SvTYPE(sv) >= SVt_PVMG) { |
5526 | if (SvMAGIC(sv)) | |
5527 | mg_free(sv); | |
bce8f412 | 5528 | if (SvTYPE(sv) == SVt_PVMG && SvFLAGS(sv) & SVpad_TYPED) |
524189f1 JH |
5529 | SvREFCNT_dec(SvSTASH(sv)); |
5530 | } | |
ec12f114 | 5531 | stash = NULL; |
79072805 | 5532 | switch (SvTYPE(sv)) { |
8990e307 | 5533 | case SVt_PVIO: |
df0bd2f4 GS |
5534 | if (IoIFP(sv) && |
5535 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5536 | IoIFP(sv) != PerlIO_stdout() && |
5537 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5538 | { |
f2b5be74 | 5539 | io_close((IO*)sv, FALSE); |
93578b34 | 5540 | } |
1d7c1841 | 5541 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5542 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5543 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5544 | Safefree(IoTOP_NAME(sv)); |
5545 | Safefree(IoFMT_NAME(sv)); | |
5546 | Safefree(IoBOTTOM_NAME(sv)); | |
a0d0e21e | 5547 | /* FALL THROUGH */ |
79072805 | 5548 | case SVt_PVBM: |
a0d0e21e | 5549 | goto freescalar; |
79072805 | 5550 | case SVt_PVCV: |
748a9306 | 5551 | case SVt_PVFM: |
85e6fe83 | 5552 | cv_undef((CV*)sv); |
a0d0e21e | 5553 | goto freescalar; |
79072805 | 5554 | case SVt_PVHV: |
85e6fe83 | 5555 | hv_undef((HV*)sv); |
a0d0e21e | 5556 | break; |
79072805 | 5557 | case SVt_PVAV: |
85e6fe83 | 5558 | av_undef((AV*)sv); |
a0d0e21e | 5559 | break; |
02270b4e | 5560 | case SVt_PVLV: |
dd28f7bb DM |
5561 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5562 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5563 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5564 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5565 | } | |
5566 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5567 | SvREFCNT_dec(LvTARG(sv)); | |
02270b4e | 5568 | goto freescalar; |
a0d0e21e | 5569 | case SVt_PVGV: |
1edc1566 | 5570 | gp_free((GV*)sv); |
a0d0e21e | 5571 | Safefree(GvNAME(sv)); |
ec12f114 JPC |
5572 | /* cannot decrease stash refcount yet, as we might recursively delete |
5573 | ourselves when the refcnt drops to zero. Delay SvREFCNT_dec | |
5574 | of stash until current sv is completely gone. | |
5575 | -- JohnPC, 27 Mar 1998 */ | |
5576 | stash = GvSTASH(sv); | |
a0d0e21e | 5577 | /* FALL THROUGH */ |
79072805 | 5578 | case SVt_PVMG: |
79072805 LW |
5579 | case SVt_PVNV: |
5580 | case SVt_PVIV: | |
a0d0e21e | 5581 | freescalar: |
5228ca4e NC |
5582 | /* Don't bother with SvOOK_off(sv); as we're only going to free it. */ |
5583 | if (SvOOK(sv)) { | |
93524f2b | 5584 | SvPV_set(sv, SvPVX_mutable(sv) - SvIVX(sv)); |
5228ca4e NC |
5585 | /* Don't even bother with turning off the OOK flag. */ |
5586 | } | |
79072805 LW |
5587 | /* FALL THROUGH */ |
5588 | case SVt_PV: | |
a0d0e21e | 5589 | case SVt_RV: |
810b8aa5 | 5590 | if (SvROK(sv)) { |
e15faf7d | 5591 | SV *target = SvRV(sv); |
810b8aa5 | 5592 | if (SvWEAKREF(sv)) |
e15faf7d | 5593 | sv_del_backref(target, sv); |
810b8aa5 | 5594 | else |
e15faf7d | 5595 | SvREFCNT_dec(target); |
810b8aa5 | 5596 | } |
f8c7b90f | 5597 | #ifdef PERL_OLD_COPY_ON_WRITE |
3f7c398e | 5598 | else if (SvPVX_const(sv)) { |
765f542d NC |
5599 | if (SvIsCOW(sv)) { |
5600 | /* I believe I need to grab the global SV mutex here and | |
5601 | then recheck the COW status. */ | |
46187eeb NC |
5602 | if (DEBUG_C_TEST) { |
5603 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5604 | sv_dump(sv); |
46187eeb | 5605 | } |
bdd68bc3 NC |
5606 | sv_release_COW(sv, SvPVX_const(sv), SvLEN(sv), |
5607 | SV_COW_NEXT_SV(sv)); | |
765f542d NC |
5608 | /* And drop it here. */ |
5609 | SvFAKE_off(sv); | |
5610 | } else if (SvLEN(sv)) { | |
3f7c398e | 5611 | Safefree(SvPVX_const(sv)); |
765f542d NC |
5612 | } |
5613 | } | |
5614 | #else | |
3f7c398e | 5615 | else if (SvPVX_const(sv) && SvLEN(sv)) |
94010e71 | 5616 | Safefree(SvPVX_mutable(sv)); |
3f7c398e | 5617 | else if (SvPVX_const(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
bdd68bc3 | 5618 | unshare_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sv))); |
1c846c1f NIS |
5619 | SvFAKE_off(sv); |
5620 | } | |
765f542d | 5621 | #endif |
79072805 | 5622 | break; |
a0d0e21e | 5623 | /* |
79072805 | 5624 | case SVt_NV: |
79072805 | 5625 | case SVt_IV: |
79072805 LW |
5626 | case SVt_NULL: |
5627 | break; | |
a0d0e21e | 5628 | */ |
79072805 LW |
5629 | } |
5630 | ||
5631 | switch (SvTYPE(sv)) { | |
5632 | case SVt_NULL: | |
5633 | break; | |
79072805 | 5634 | case SVt_IV: |
79072805 LW |
5635 | break; |
5636 | case SVt_NV: | |
5637 | del_XNV(SvANY(sv)); | |
5638 | break; | |
ed6116ce | 5639 | case SVt_RV: |
ed6116ce | 5640 | break; |
79072805 LW |
5641 | case SVt_PV: |
5642 | del_XPV(SvANY(sv)); | |
5643 | break; | |
5644 | case SVt_PVIV: | |
5645 | del_XPVIV(SvANY(sv)); | |
5646 | break; | |
5647 | case SVt_PVNV: | |
5648 | del_XPVNV(SvANY(sv)); | |
5649 | break; | |
5650 | case SVt_PVMG: | |
5651 | del_XPVMG(SvANY(sv)); | |
5652 | break; | |
5653 | case SVt_PVLV: | |
5654 | del_XPVLV(SvANY(sv)); | |
5655 | break; | |
5656 | case SVt_PVAV: | |
5657 | del_XPVAV(SvANY(sv)); | |
5658 | break; | |
5659 | case SVt_PVHV: | |
5660 | del_XPVHV(SvANY(sv)); | |
5661 | break; | |
5662 | case SVt_PVCV: | |
5663 | del_XPVCV(SvANY(sv)); | |
5664 | break; | |
5665 | case SVt_PVGV: | |
5666 | del_XPVGV(SvANY(sv)); | |
ec12f114 JPC |
5667 | /* code duplication for increased performance. */ |
5668 | SvFLAGS(sv) &= SVf_BREAK; | |
5669 | SvFLAGS(sv) |= SVTYPEMASK; | |
5670 | /* decrease refcount of the stash that owns this GV, if any */ | |
5671 | if (stash) | |
e15faf7d | 5672 | sv_del_backref((SV*)stash, sv); |
ec12f114 | 5673 | return; /* not break, SvFLAGS reset already happened */ |
79072805 LW |
5674 | case SVt_PVBM: |
5675 | del_XPVBM(SvANY(sv)); | |
5676 | break; | |
5677 | case SVt_PVFM: | |
5678 | del_XPVFM(SvANY(sv)); | |
5679 | break; | |
8990e307 LW |
5680 | case SVt_PVIO: |
5681 | del_XPVIO(SvANY(sv)); | |
5682 | break; | |
79072805 | 5683 | } |
a0d0e21e | 5684 | SvFLAGS(sv) &= SVf_BREAK; |
8990e307 | 5685 | SvFLAGS(sv) |= SVTYPEMASK; |
79072805 LW |
5686 | } |
5687 | ||
645c22ef DM |
5688 | /* |
5689 | =for apidoc sv_newref | |
5690 | ||
5691 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
5692 | instead. | |
5693 | ||
5694 | =cut | |
5695 | */ | |
5696 | ||
79072805 | 5697 | SV * |
864dbfa3 | 5698 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 5699 | { |
463ee0b2 | 5700 | if (sv) |
4db098f4 | 5701 | (SvREFCNT(sv))++; |
79072805 LW |
5702 | return sv; |
5703 | } | |
5704 | ||
c461cf8f JH |
5705 | /* |
5706 | =for apidoc sv_free | |
5707 | ||
645c22ef DM |
5708 | Decrement an SV's reference count, and if it drops to zero, call |
5709 | C<sv_clear> to invoke destructors and free up any memory used by | |
5710 | the body; finally, deallocate the SV's head itself. | |
5711 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
5712 | |
5713 | =cut | |
5714 | */ | |
5715 | ||
79072805 | 5716 | void |
864dbfa3 | 5717 | Perl_sv_free(pTHX_ SV *sv) |
79072805 | 5718 | { |
27da23d5 | 5719 | dVAR; |
79072805 LW |
5720 | if (!sv) |
5721 | return; | |
a0d0e21e LW |
5722 | if (SvREFCNT(sv) == 0) { |
5723 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
5724 | /* this SV's refcnt has been artificially decremented to |
5725 | * trigger cleanup */ | |
a0d0e21e | 5726 | return; |
3280af22 | 5727 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 5728 | return; |
d689ffdd JP |
5729 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5730 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5731 | SvREFCNT(sv) = (~(U32)0)/2; | |
5732 | return; | |
5733 | } | |
41e4abd8 | 5734 | if (ckWARN_d(WARN_INTERNAL)) { |
d5dede04 | 5735 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
5736 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
5737 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
41e4abd8 NC |
5738 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
5739 | Perl_dump_sv_child(aTHX_ sv); | |
5740 | #endif | |
5741 | } | |
79072805 LW |
5742 | return; |
5743 | } | |
4db098f4 | 5744 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 5745 | return; |
8c4d3c90 NC |
5746 | Perl_sv_free2(aTHX_ sv); |
5747 | } | |
5748 | ||
5749 | void | |
5750 | Perl_sv_free2(pTHX_ SV *sv) | |
5751 | { | |
27da23d5 | 5752 | dVAR; |
463ee0b2 LW |
5753 | #ifdef DEBUGGING |
5754 | if (SvTEMP(sv)) { | |
0453d815 | 5755 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 5756 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
5757 | "Attempt to free temp prematurely: SV 0x%"UVxf |
5758 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 5759 | return; |
79072805 | 5760 | } |
463ee0b2 | 5761 | #endif |
d689ffdd JP |
5762 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5763 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5764 | SvREFCNT(sv) = (~(U32)0)/2; | |
5765 | return; | |
5766 | } | |
79072805 | 5767 | sv_clear(sv); |
477f5d66 CS |
5768 | if (! SvREFCNT(sv)) |
5769 | del_SV(sv); | |
79072805 LW |
5770 | } |
5771 | ||
954c1994 GS |
5772 | /* |
5773 | =for apidoc sv_len | |
5774 | ||
645c22ef DM |
5775 | Returns the length of the string in the SV. Handles magic and type |
5776 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
5777 | |
5778 | =cut | |
5779 | */ | |
5780 | ||
79072805 | 5781 | STRLEN |
864dbfa3 | 5782 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 5783 | { |
463ee0b2 | 5784 | STRLEN len; |
79072805 LW |
5785 | |
5786 | if (!sv) | |
5787 | return 0; | |
5788 | ||
8990e307 | 5789 | if (SvGMAGICAL(sv)) |
565764a8 | 5790 | len = mg_length(sv); |
8990e307 | 5791 | else |
4d84ee25 | 5792 | (void)SvPV_const(sv, len); |
463ee0b2 | 5793 | return len; |
79072805 LW |
5794 | } |
5795 | ||
c461cf8f JH |
5796 | /* |
5797 | =for apidoc sv_len_utf8 | |
5798 | ||
5799 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 5800 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
5801 | |
5802 | =cut | |
5803 | */ | |
5804 | ||
7e8c5dac HS |
5805 | /* |
5806 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
5807 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
5808 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
7a5fa8a2 | 5809 | * |
7e8c5dac HS |
5810 | */ |
5811 | ||
a0ed51b3 | 5812 | STRLEN |
864dbfa3 | 5813 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 5814 | { |
a0ed51b3 LW |
5815 | if (!sv) |
5816 | return 0; | |
5817 | ||
a0ed51b3 | 5818 | if (SvGMAGICAL(sv)) |
b76347f2 | 5819 | return mg_length(sv); |
a0ed51b3 | 5820 | else |
b76347f2 | 5821 | { |
7e8c5dac | 5822 | STRLEN len, ulen; |
e62f0680 | 5823 | const U8 *s = (U8*)SvPV_const(sv, len); |
7e8c5dac HS |
5824 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
5825 | ||
e23c8137 | 5826 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) { |
7e8c5dac | 5827 | ulen = mg->mg_len; |
e23c8137 JH |
5828 | #ifdef PERL_UTF8_CACHE_ASSERT |
5829 | assert(ulen == Perl_utf8_length(aTHX_ s, s + len)); | |
5830 | #endif | |
5831 | } | |
7e8c5dac HS |
5832 | else { |
5833 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
5834 | if (!mg && !SvREADONLY(sv)) { | |
5835 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5836 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5837 | assert(mg); | |
5838 | } | |
5839 | if (mg) | |
5840 | mg->mg_len = ulen; | |
5841 | } | |
5842 | return ulen; | |
5843 | } | |
5844 | } | |
5845 | ||
5846 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
5847 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5848 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
5849 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
5850 | * and byte offset) cache positions. | |
5851 | * | |
5852 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
5853 | * Note that the mg_len is not the length of the mg_ptr field. | |
5854 | * | |
5855 | */ | |
5856 | STATIC bool | |
245d4a47 NC |
5857 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, |
5858 | I32 offsetp, const U8 *s, const U8 *start) | |
7e8c5dac | 5859 | { |
7a5fa8a2 | 5860 | bool found = FALSE; |
7e8c5dac HS |
5861 | |
5862 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
8f78557a | 5863 | if (!*mgp) |
27da23d5 | 5864 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, (MGVTBL*)&PL_vtbl_utf8, 0, 0); |
7e8c5dac | 5865 | assert(*mgp); |
b76347f2 | 5866 | |
7e8c5dac HS |
5867 | if ((*mgp)->mg_ptr) |
5868 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
5869 | else { | |
5870 | Newz(0, *cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
5871 | (*mgp)->mg_ptr = (char *) *cachep; | |
5872 | } | |
5873 | assert(*cachep); | |
5874 | ||
a3b680e6 | 5875 | (*cachep)[i] = offsetp; |
7e8c5dac HS |
5876 | (*cachep)[i+1] = s - start; |
5877 | found = TRUE; | |
a0ed51b3 | 5878 | } |
7e8c5dac HS |
5879 | |
5880 | return found; | |
a0ed51b3 LW |
5881 | } |
5882 | ||
645c22ef | 5883 | /* |
7e8c5dac HS |
5884 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
5885 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5886 | * between UTF-8 and byte offsets. See also the comments of | |
5887 | * S_utf8_mg_pos_init(). | |
5888 | * | |
5889 | */ | |
5890 | STATIC bool | |
245d4a47 | 5891 | S_utf8_mg_pos(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, I32 uoff, const U8 **sp, const U8 *start, const U8 *send) |
7e8c5dac HS |
5892 | { |
5893 | bool found = FALSE; | |
5894 | ||
5895 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5896 | if (!*mgp) | |
5897 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
5898 | if (*mgp && (*mgp)->mg_ptr) { | |
5899 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
e23c8137 | 5900 | ASSERT_UTF8_CACHE(*cachep); |
667208dd | 5901 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
7a5fa8a2 | 5902 | found = TRUE; |
7e8c5dac HS |
5903 | else { /* We will skip to the right spot. */ |
5904 | STRLEN forw = 0; | |
5905 | STRLEN backw = 0; | |
a3b680e6 | 5906 | const U8* p = NULL; |
7e8c5dac HS |
5907 | |
5908 | /* The assumption is that going backward is half | |
5909 | * the speed of going forward (that's where the | |
5910 | * 2 * backw in the below comes from). (The real | |
5911 | * figure of course depends on the UTF-8 data.) */ | |
5912 | ||
667208dd | 5913 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 5914 | forw = uoff; |
667208dd | 5915 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
5916 | |
5917 | if (forw < 2 * backw) | |
5918 | p = start; | |
5919 | else | |
5920 | p = start + (*cachep)[i+1]; | |
5921 | } | |
5922 | /* Try this only for the substr offset (i == 0), | |
5923 | * not for the substr length (i == 2). */ | |
5924 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
a3b680e6 | 5925 | const STRLEN ulen = sv_len_utf8(sv); |
7e8c5dac | 5926 | |
667208dd JH |
5927 | if ((STRLEN)uoff < ulen) { |
5928 | forw = (STRLEN)uoff - (*cachep)[i]; | |
5929 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
5930 | |
5931 | if (forw < 2 * backw) | |
5932 | p = start + (*cachep)[i+1]; | |
5933 | else | |
5934 | p = send; | |
5935 | } | |
5936 | ||
5937 | /* If the string is not long enough for uoff, | |
5938 | * we could extend it, but not at this low a level. */ | |
5939 | } | |
5940 | ||
5941 | if (p) { | |
5942 | if (forw < 2 * backw) { | |
5943 | while (forw--) | |
5944 | p += UTF8SKIP(p); | |
5945 | } | |
5946 | else { | |
5947 | while (backw--) { | |
5948 | p--; | |
5949 | while (UTF8_IS_CONTINUATION(*p)) | |
5950 | p--; | |
5951 | } | |
5952 | } | |
5953 | ||
5954 | /* Update the cache. */ | |
667208dd | 5955 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac | 5956 | (*cachep)[i+1] = p - start; |
8f78557a AE |
5957 | |
5958 | /* Drop the stale "length" cache */ | |
5959 | if (i == 0) { | |
5960 | (*cachep)[2] = 0; | |
5961 | (*cachep)[3] = 0; | |
5962 | } | |
7a5fa8a2 | 5963 | |
7e8c5dac HS |
5964 | found = TRUE; |
5965 | } | |
5966 | } | |
5967 | if (found) { /* Setup the return values. */ | |
5968 | *offsetp = (*cachep)[i+1]; | |
5969 | *sp = start + *offsetp; | |
5970 | if (*sp >= send) { | |
5971 | *sp = send; | |
5972 | *offsetp = send - start; | |
5973 | } | |
5974 | else if (*sp < start) { | |
5975 | *sp = start; | |
5976 | *offsetp = 0; | |
5977 | } | |
5978 | } | |
5979 | } | |
e23c8137 JH |
5980 | #ifdef PERL_UTF8_CACHE_ASSERT |
5981 | if (found) { | |
5982 | U8 *s = start; | |
5983 | I32 n = uoff; | |
5984 | ||
5985 | while (n-- && s < send) | |
5986 | s += UTF8SKIP(s); | |
5987 | ||
5988 | if (i == 0) { | |
5989 | assert(*offsetp == s - start); | |
5990 | assert((*cachep)[0] == (STRLEN)uoff); | |
5991 | assert((*cachep)[1] == *offsetp); | |
5992 | } | |
5993 | ASSERT_UTF8_CACHE(*cachep); | |
5994 | } | |
5995 | #endif | |
7e8c5dac | 5996 | } |
e23c8137 | 5997 | |
7e8c5dac HS |
5998 | return found; |
5999 | } | |
7a5fa8a2 | 6000 | |
7e8c5dac | 6001 | /* |
645c22ef DM |
6002 | =for apidoc sv_pos_u2b |
6003 | ||
1e54db1a | 6004 | Converts the value pointed to by offsetp from a count of UTF-8 chars from |
645c22ef DM |
6005 | the start of the string, to a count of the equivalent number of bytes; if |
6006 | lenp is non-zero, it does the same to lenp, but this time starting from | |
6007 | the offset, rather than from the start of the string. Handles magic and | |
6008 | type coercion. | |
6009 | ||
6010 | =cut | |
6011 | */ | |
6012 | ||
7e8c5dac HS |
6013 | /* |
6014 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
6015 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6016 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6017 | * | |
6018 | */ | |
6019 | ||
a0ed51b3 | 6020 | void |
864dbfa3 | 6021 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 6022 | { |
245d4a47 | 6023 | const U8 *start; |
a0ed51b3 LW |
6024 | STRLEN len; |
6025 | ||
6026 | if (!sv) | |
6027 | return; | |
6028 | ||
245d4a47 | 6029 | start = (U8*)SvPV_const(sv, len); |
7e8c5dac | 6030 | if (len) { |
b464bac0 AL |
6031 | STRLEN boffset = 0; |
6032 | STRLEN *cache = 0; | |
245d4a47 NC |
6033 | const U8 *s = start; |
6034 | I32 uoffset = *offsetp; | |
9d4ba2ae | 6035 | const U8 * const send = s + len; |
245d4a47 NC |
6036 | MAGIC *mg = 0; |
6037 | bool found = FALSE; | |
7e8c5dac | 6038 | |
bdf77a2a | 6039 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
6040 | found = TRUE; |
6041 | if (!found && uoffset > 0) { | |
6042 | while (s < send && uoffset--) | |
6043 | s += UTF8SKIP(s); | |
6044 | if (s >= send) | |
6045 | s = send; | |
a3b680e6 | 6046 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, *offsetp, s, start)) |
7e8c5dac HS |
6047 | boffset = cache[1]; |
6048 | *offsetp = s - start; | |
6049 | } | |
6050 | if (lenp) { | |
6051 | found = FALSE; | |
6052 | start = s; | |
ec062429 | 6053 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp, &s, start, send)) { |
7e8c5dac HS |
6054 | *lenp -= boffset; |
6055 | found = TRUE; | |
6056 | } | |
6057 | if (!found && *lenp > 0) { | |
6058 | I32 ulen = *lenp; | |
6059 | if (ulen > 0) | |
6060 | while (s < send && ulen--) | |
6061 | s += UTF8SKIP(s); | |
6062 | if (s >= send) | |
6063 | s = send; | |
a3b680e6 | 6064 | utf8_mg_pos_init(sv, &mg, &cache, 2, *lenp, s, start); |
7e8c5dac HS |
6065 | } |
6066 | *lenp = s - start; | |
6067 | } | |
e23c8137 | 6068 | ASSERT_UTF8_CACHE(cache); |
7e8c5dac HS |
6069 | } |
6070 | else { | |
6071 | *offsetp = 0; | |
6072 | if (lenp) | |
6073 | *lenp = 0; | |
a0ed51b3 | 6074 | } |
e23c8137 | 6075 | |
a0ed51b3 LW |
6076 | return; |
6077 | } | |
6078 | ||
645c22ef DM |
6079 | /* |
6080 | =for apidoc sv_pos_b2u | |
6081 | ||
6082 | Converts the value pointed to by offsetp from a count of bytes from the | |
1e54db1a | 6083 | start of the string, to a count of the equivalent number of UTF-8 chars. |
645c22ef DM |
6084 | Handles magic and type coercion. |
6085 | ||
6086 | =cut | |
6087 | */ | |
6088 | ||
7e8c5dac HS |
6089 | /* |
6090 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
6091 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6092 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6093 | * | |
6094 | */ | |
6095 | ||
a0ed51b3 | 6096 | void |
7e8c5dac | 6097 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 6098 | { |
83003860 | 6099 | const U8* s; |
a0ed51b3 LW |
6100 | STRLEN len; |
6101 | ||
6102 | if (!sv) | |
6103 | return; | |
6104 | ||
83003860 | 6105 | s = (const U8*)SvPV_const(sv, len); |
eb160463 | 6106 | if ((I32)len < *offsetp) |
a0dbb045 | 6107 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac | 6108 | else { |
83003860 | 6109 | const U8* send = s + *offsetp; |
7e8c5dac HS |
6110 | MAGIC* mg = NULL; |
6111 | STRLEN *cache = NULL; | |
6112 | ||
6113 | len = 0; | |
6114 | ||
6115 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6116 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6117 | if (mg && mg->mg_ptr) { | |
6118 | cache = (STRLEN *) mg->mg_ptr; | |
c5661c80 | 6119 | if (cache[1] == (STRLEN)*offsetp) { |
7e8c5dac HS |
6120 | /* An exact match. */ |
6121 | *offsetp = cache[0]; | |
6122 | ||
6123 | return; | |
6124 | } | |
c5661c80 | 6125 | else if (cache[1] < (STRLEN)*offsetp) { |
7e8c5dac HS |
6126 | /* We already know part of the way. */ |
6127 | len = cache[0]; | |
6128 | s += cache[1]; | |
7a5fa8a2 | 6129 | /* Let the below loop do the rest. */ |
7e8c5dac HS |
6130 | } |
6131 | else { /* cache[1] > *offsetp */ | |
6132 | /* We already know all of the way, now we may | |
6133 | * be able to walk back. The same assumption | |
6134 | * is made as in S_utf8_mg_pos(), namely that | |
6135 | * walking backward is twice slower than | |
6136 | * walking forward. */ | |
9d4ba2ae | 6137 | const STRLEN forw = *offsetp; |
7e8c5dac HS |
6138 | STRLEN backw = cache[1] - *offsetp; |
6139 | ||
6140 | if (!(forw < 2 * backw)) { | |
83003860 | 6141 | const U8 *p = s + cache[1]; |
7e8c5dac | 6142 | STRLEN ubackw = 0; |
7a5fa8a2 | 6143 | |
a5b510f2 AE |
6144 | cache[1] -= backw; |
6145 | ||
7e8c5dac HS |
6146 | while (backw--) { |
6147 | p--; | |
0aeb64d0 | 6148 | while (UTF8_IS_CONTINUATION(*p)) { |
7e8c5dac | 6149 | p--; |
0aeb64d0 JH |
6150 | backw--; |
6151 | } | |
7e8c5dac HS |
6152 | ubackw++; |
6153 | } | |
6154 | ||
6155 | cache[0] -= ubackw; | |
0aeb64d0 | 6156 | *offsetp = cache[0]; |
a67d7df9 TS |
6157 | |
6158 | /* Drop the stale "length" cache */ | |
6159 | cache[2] = 0; | |
6160 | cache[3] = 0; | |
6161 | ||
0aeb64d0 | 6162 | return; |
7e8c5dac HS |
6163 | } |
6164 | } | |
6165 | } | |
e23c8137 | 6166 | ASSERT_UTF8_CACHE(cache); |
a0dbb045 | 6167 | } |
7e8c5dac HS |
6168 | |
6169 | while (s < send) { | |
6170 | STRLEN n = 1; | |
6171 | ||
6172 | /* Call utf8n_to_uvchr() to validate the sequence | |
6173 | * (unless a simple non-UTF character) */ | |
6174 | if (!UTF8_IS_INVARIANT(*s)) | |
6175 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
6176 | if (n > 0) { | |
6177 | s += n; | |
6178 | len++; | |
6179 | } | |
6180 | else | |
6181 | break; | |
6182 | } | |
6183 | ||
6184 | if (!SvREADONLY(sv)) { | |
6185 | if (!mg) { | |
6186 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6187 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6188 | } | |
6189 | assert(mg); | |
6190 | ||
6191 | if (!mg->mg_ptr) { | |
979acdb5 | 6192 | Newz(0, cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
6193 | mg->mg_ptr = (char *) cache; |
6194 | } | |
6195 | assert(cache); | |
6196 | ||
6197 | cache[0] = len; | |
6198 | cache[1] = *offsetp; | |
a67d7df9 TS |
6199 | /* Drop the stale "length" cache */ |
6200 | cache[2] = 0; | |
6201 | cache[3] = 0; | |
7e8c5dac HS |
6202 | } |
6203 | ||
6204 | *offsetp = len; | |
a0ed51b3 | 6205 | } |
a0ed51b3 LW |
6206 | return; |
6207 | } | |
6208 | ||
954c1994 GS |
6209 | /* |
6210 | =for apidoc sv_eq | |
6211 | ||
6212 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
6213 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6214 | coerce its args to strings if necessary. | |
954c1994 GS |
6215 | |
6216 | =cut | |
6217 | */ | |
6218 | ||
79072805 | 6219 | I32 |
e01b9e88 | 6220 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6221 | { |
e1ec3a88 | 6222 | const char *pv1; |
463ee0b2 | 6223 | STRLEN cur1; |
e1ec3a88 | 6224 | const char *pv2; |
463ee0b2 | 6225 | STRLEN cur2; |
e01b9e88 | 6226 | I32 eq = 0; |
553e1bcc AT |
6227 | char *tpv = Nullch; |
6228 | SV* svrecode = Nullsv; | |
79072805 | 6229 | |
e01b9e88 | 6230 | if (!sv1) { |
79072805 LW |
6231 | pv1 = ""; |
6232 | cur1 = 0; | |
6233 | } | |
463ee0b2 | 6234 | else |
4d84ee25 | 6235 | pv1 = SvPV_const(sv1, cur1); |
79072805 | 6236 | |
e01b9e88 SC |
6237 | if (!sv2){ |
6238 | pv2 = ""; | |
6239 | cur2 = 0; | |
92d29cee | 6240 | } |
e01b9e88 | 6241 | else |
4d84ee25 | 6242 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 6243 | |
cf48d248 | 6244 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6245 | /* Differing utf8ness. |
6246 | * Do not UTF8size the comparands as a side-effect. */ | |
6247 | if (PL_encoding) { | |
6248 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6249 | svrecode = newSVpvn(pv2, cur2); |
6250 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6251 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
6252 | } |
6253 | else { | |
553e1bcc AT |
6254 | svrecode = newSVpvn(pv1, cur1); |
6255 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6256 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
6257 | } |
6258 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
6259 | if (cur1 != cur2) { |
6260 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6261 | return FALSE; |
0a1bd7ac | 6262 | } |
799ef3cb JH |
6263 | } |
6264 | else { | |
6265 | bool is_utf8 = TRUE; | |
6266 | ||
6267 | if (SvUTF8(sv1)) { | |
6268 | /* sv1 is the UTF-8 one, | |
6269 | * if is equal it must be downgrade-able */ | |
9d4ba2ae | 6270 | char * const pv = (char*)bytes_from_utf8((const U8*)pv1, |
799ef3cb JH |
6271 | &cur1, &is_utf8); |
6272 | if (pv != pv1) | |
553e1bcc | 6273 | pv1 = tpv = pv; |
799ef3cb JH |
6274 | } |
6275 | else { | |
6276 | /* sv2 is the UTF-8 one, | |
6277 | * if is equal it must be downgrade-able */ | |
9d4ba2ae | 6278 | char * const pv = (char *)bytes_from_utf8((const U8*)pv2, |
799ef3cb JH |
6279 | &cur2, &is_utf8); |
6280 | if (pv != pv2) | |
553e1bcc | 6281 | pv2 = tpv = pv; |
799ef3cb JH |
6282 | } |
6283 | if (is_utf8) { | |
6284 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 6285 | assert (tpv == 0); |
799ef3cb JH |
6286 | return FALSE; |
6287 | } | |
6288 | } | |
cf48d248 JH |
6289 | } |
6290 | ||
6291 | if (cur1 == cur2) | |
765f542d | 6292 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6293 | |
553e1bcc AT |
6294 | if (svrecode) |
6295 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6296 | |
553e1bcc AT |
6297 | if (tpv) |
6298 | Safefree(tpv); | |
cf48d248 | 6299 | |
e01b9e88 | 6300 | return eq; |
79072805 LW |
6301 | } |
6302 | ||
954c1994 GS |
6303 | /* |
6304 | =for apidoc sv_cmp | |
6305 | ||
6306 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6307 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6308 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6309 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6310 | |
6311 | =cut | |
6312 | */ | |
6313 | ||
79072805 | 6314 | I32 |
e01b9e88 | 6315 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6316 | { |
560a288e | 6317 | STRLEN cur1, cur2; |
e1ec3a88 AL |
6318 | const char *pv1, *pv2; |
6319 | char *tpv = Nullch; | |
cf48d248 | 6320 | I32 cmp; |
553e1bcc | 6321 | SV *svrecode = Nullsv; |
560a288e | 6322 | |
e01b9e88 SC |
6323 | if (!sv1) { |
6324 | pv1 = ""; | |
560a288e GS |
6325 | cur1 = 0; |
6326 | } | |
e01b9e88 | 6327 | else |
4d84ee25 | 6328 | pv1 = SvPV_const(sv1, cur1); |
560a288e | 6329 | |
553e1bcc | 6330 | if (!sv2) { |
e01b9e88 | 6331 | pv2 = ""; |
560a288e GS |
6332 | cur2 = 0; |
6333 | } | |
e01b9e88 | 6334 | else |
4d84ee25 | 6335 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 6336 | |
cf48d248 | 6337 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6338 | /* Differing utf8ness. |
6339 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6340 | if (SvUTF8(sv1)) { |
799ef3cb | 6341 | if (PL_encoding) { |
553e1bcc AT |
6342 | svrecode = newSVpvn(pv2, cur2); |
6343 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6344 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
6345 | } |
6346 | else { | |
e1ec3a88 | 6347 | pv2 = tpv = (char*)bytes_to_utf8((const U8*)pv2, &cur2); |
799ef3cb | 6348 | } |
cf48d248 JH |
6349 | } |
6350 | else { | |
799ef3cb | 6351 | if (PL_encoding) { |
553e1bcc AT |
6352 | svrecode = newSVpvn(pv1, cur1); |
6353 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6354 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
6355 | } |
6356 | else { | |
e1ec3a88 | 6357 | pv1 = tpv = (char*)bytes_to_utf8((const U8*)pv1, &cur1); |
799ef3cb | 6358 | } |
cf48d248 JH |
6359 | } |
6360 | } | |
6361 | ||
e01b9e88 | 6362 | if (!cur1) { |
cf48d248 | 6363 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6364 | } else if (!cur2) { |
cf48d248 JH |
6365 | cmp = 1; |
6366 | } else { | |
e1ec3a88 | 6367 | const I32 retval = memcmp((const void*)pv1, (const void*)pv2, cur1 < cur2 ? cur1 : cur2); |
e01b9e88 SC |
6368 | |
6369 | if (retval) { | |
cf48d248 | 6370 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6371 | } else if (cur1 == cur2) { |
cf48d248 JH |
6372 | cmp = 0; |
6373 | } else { | |
6374 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6375 | } |
cf48d248 | 6376 | } |
16660edb | 6377 | |
553e1bcc AT |
6378 | if (svrecode) |
6379 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6380 | |
553e1bcc AT |
6381 | if (tpv) |
6382 | Safefree(tpv); | |
cf48d248 JH |
6383 | |
6384 | return cmp; | |
bbce6d69 | 6385 | } |
16660edb | 6386 | |
c461cf8f JH |
6387 | /* |
6388 | =for apidoc sv_cmp_locale | |
6389 | ||
645c22ef DM |
6390 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6391 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6392 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6393 | |
6394 | =cut | |
6395 | */ | |
6396 | ||
bbce6d69 | 6397 | I32 |
864dbfa3 | 6398 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6399 | { |
36477c24 | 6400 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6401 | |
bbce6d69 | 6402 | char *pv1, *pv2; |
6403 | STRLEN len1, len2; | |
6404 | I32 retval; | |
16660edb | 6405 | |
3280af22 | 6406 | if (PL_collation_standard) |
bbce6d69 | 6407 | goto raw_compare; |
16660edb | 6408 | |
bbce6d69 | 6409 | len1 = 0; |
8ac85365 | 6410 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6411 | len2 = 0; |
8ac85365 | 6412 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6413 | |
bbce6d69 | 6414 | if (!pv1 || !len1) { |
6415 | if (pv2 && len2) | |
6416 | return -1; | |
6417 | else | |
6418 | goto raw_compare; | |
6419 | } | |
6420 | else { | |
6421 | if (!pv2 || !len2) | |
6422 | return 1; | |
6423 | } | |
16660edb | 6424 | |
bbce6d69 | 6425 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6426 | |
bbce6d69 | 6427 | if (retval) |
16660edb | 6428 | return retval < 0 ? -1 : 1; |
6429 | ||
bbce6d69 | 6430 | /* |
6431 | * When the result of collation is equality, that doesn't mean | |
6432 | * that there are no differences -- some locales exclude some | |
6433 | * characters from consideration. So to avoid false equalities, | |
6434 | * we use the raw string as a tiebreaker. | |
6435 | */ | |
16660edb | 6436 | |
bbce6d69 | 6437 | raw_compare: |
6438 | /* FALL THROUGH */ | |
16660edb | 6439 | |
36477c24 | 6440 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6441 | |
bbce6d69 | 6442 | return sv_cmp(sv1, sv2); |
6443 | } | |
79072805 | 6444 | |
645c22ef | 6445 | |
36477c24 | 6446 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6447 | |
7a4c00b4 | 6448 | /* |
645c22ef DM |
6449 | =for apidoc sv_collxfrm |
6450 | ||
6451 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6452 | ||
6453 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6454 | scalar data of the variable, but transformed to such a format that a normal | |
6455 | memory comparison can be used to compare the data according to the locale | |
6456 | settings. | |
6457 | ||
6458 | =cut | |
6459 | */ | |
6460 | ||
bbce6d69 | 6461 | char * |
864dbfa3 | 6462 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6463 | { |
7a4c00b4 | 6464 | MAGIC *mg; |
16660edb | 6465 | |
14befaf4 | 6466 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6467 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
93524f2b NC |
6468 | const char *s; |
6469 | char *xf; | |
bbce6d69 | 6470 | STRLEN len, xlen; |
6471 | ||
7a4c00b4 | 6472 | if (mg) |
6473 | Safefree(mg->mg_ptr); | |
93524f2b | 6474 | s = SvPV_const(sv, len); |
bbce6d69 | 6475 | if ((xf = mem_collxfrm(s, len, &xlen))) { |
ff0cee69 | 6476 | if (SvREADONLY(sv)) { |
6477 | SAVEFREEPV(xf); | |
6478 | *nxp = xlen; | |
3280af22 | 6479 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6480 | } |
7a4c00b4 | 6481 | if (! mg) { |
14befaf4 DM |
6482 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6483 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6484 | assert(mg); |
bbce6d69 | 6485 | } |
7a4c00b4 | 6486 | mg->mg_ptr = xf; |
565764a8 | 6487 | mg->mg_len = xlen; |
7a4c00b4 | 6488 | } |
6489 | else { | |
ff0cee69 | 6490 | if (mg) { |
6491 | mg->mg_ptr = NULL; | |
565764a8 | 6492 | mg->mg_len = -1; |
ff0cee69 | 6493 | } |
bbce6d69 | 6494 | } |
6495 | } | |
7a4c00b4 | 6496 | if (mg && mg->mg_ptr) { |
565764a8 | 6497 | *nxp = mg->mg_len; |
3280af22 | 6498 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6499 | } |
6500 | else { | |
6501 | *nxp = 0; | |
6502 | return NULL; | |
16660edb | 6503 | } |
79072805 LW |
6504 | } |
6505 | ||
36477c24 | 6506 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6507 | |
c461cf8f JH |
6508 | /* |
6509 | =for apidoc sv_gets | |
6510 | ||
6511 | Get a line from the filehandle and store it into the SV, optionally | |
6512 | appending to the currently-stored string. | |
6513 | ||
6514 | =cut | |
6515 | */ | |
6516 | ||
79072805 | 6517 | char * |
864dbfa3 | 6518 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6519 | { |
e1ec3a88 | 6520 | const char *rsptr; |
c07a80fd | 6521 | STRLEN rslen; |
6522 | register STDCHAR rslast; | |
6523 | register STDCHAR *bp; | |
6524 | register I32 cnt; | |
9c5ffd7c | 6525 | I32 i = 0; |
8bfdd7d9 | 6526 | I32 rspara = 0; |
e311fd51 | 6527 | I32 recsize; |
c07a80fd | 6528 | |
bc44a8a2 NC |
6529 | if (SvTHINKFIRST(sv)) |
6530 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6531 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6532 | from <>. | |
6533 | However, perlbench says it's slower, because the existing swipe code | |
6534 | is faster than copy on write. | |
6535 | Swings and roundabouts. */ | |
862a34c6 | 6536 | SvUPGRADE(sv, SVt_PV); |
99491443 | 6537 | |
ff68c719 | 6538 | SvSCREAM_off(sv); |
efd8b2ba AE |
6539 | |
6540 | if (append) { | |
6541 | if (PerlIO_isutf8(fp)) { | |
6542 | if (!SvUTF8(sv)) { | |
6543 | sv_utf8_upgrade_nomg(sv); | |
6544 | sv_pos_u2b(sv,&append,0); | |
6545 | } | |
6546 | } else if (SvUTF8(sv)) { | |
1b6737cc | 6547 | SV * const tsv = NEWSV(0,0); |
efd8b2ba AE |
6548 | sv_gets(tsv, fp, 0); |
6549 | sv_utf8_upgrade_nomg(tsv); | |
6550 | SvCUR_set(sv,append); | |
6551 | sv_catsv(sv,tsv); | |
6552 | sv_free(tsv); | |
6553 | goto return_string_or_null; | |
6554 | } | |
6555 | } | |
6556 | ||
6557 | SvPOK_only(sv); | |
6558 | if (PerlIO_isutf8(fp)) | |
6559 | SvUTF8_on(sv); | |
c07a80fd | 6560 | |
923e4eb5 | 6561 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
6562 | /* we always read code in line mode */ |
6563 | rsptr = "\n"; | |
6564 | rslen = 1; | |
6565 | } | |
6566 | else if (RsSNARF(PL_rs)) { | |
7a5fa8a2 NIS |
6567 | /* If it is a regular disk file use size from stat() as estimate |
6568 | of amount we are going to read - may result in malloc-ing | |
6569 | more memory than we realy need if layers bellow reduce | |
e468d35b NIS |
6570 | size we read (e.g. CRLF or a gzip layer) |
6571 | */ | |
e311fd51 | 6572 | Stat_t st; |
e468d35b | 6573 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
f54cb97a | 6574 | const Off_t offset = PerlIO_tell(fp); |
58f1856e | 6575 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6576 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6577 | } | |
6578 | } | |
c07a80fd | 6579 | rsptr = NULL; |
6580 | rslen = 0; | |
6581 | } | |
3280af22 | 6582 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6583 | I32 bytesread; |
5b2b9c68 HM |
6584 | char *buffer; |
6585 | ||
6586 | /* Grab the size of the record we're getting */ | |
3280af22 | 6587 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 6588 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6589 | /* Go yank in */ |
6590 | #ifdef VMS | |
6591 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6592 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6593 | /* doing, but we've got no other real choice - except avoid stdio |
6594 | as implementation - perhaps write a :vms layer ? | |
6595 | */ | |
5b2b9c68 HM |
6596 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6597 | #else | |
6598 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6599 | #endif | |
27e6ca2d AE |
6600 | if (bytesread < 0) |
6601 | bytesread = 0; | |
e311fd51 | 6602 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6603 | buffer[bytesread] = '\0'; |
efd8b2ba | 6604 | goto return_string_or_null; |
5b2b9c68 | 6605 | } |
3280af22 | 6606 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6607 | rsptr = "\n\n"; |
6608 | rslen = 2; | |
8bfdd7d9 | 6609 | rspara = 1; |
c07a80fd | 6610 | } |
7d59b7e4 NIS |
6611 | else { |
6612 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6613 | if (PerlIO_isutf8(fp)) { | |
6614 | rsptr = SvPVutf8(PL_rs, rslen); | |
6615 | } | |
6616 | else { | |
6617 | if (SvUTF8(PL_rs)) { | |
6618 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
6619 | Perl_croak(aTHX_ "Wide character in $/"); | |
6620 | } | |
6621 | } | |
93524f2b | 6622 | rsptr = SvPV_const(PL_rs, rslen); |
7d59b7e4 NIS |
6623 | } |
6624 | } | |
6625 | ||
c07a80fd | 6626 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
6627 | ||
8bfdd7d9 | 6628 | if (rspara) { /* have to do this both before and after */ |
79072805 | 6629 | do { /* to make sure file boundaries work right */ |
760ac839 | 6630 | if (PerlIO_eof(fp)) |
a0d0e21e | 6631 | return 0; |
760ac839 | 6632 | i = PerlIO_getc(fp); |
79072805 | 6633 | if (i != '\n') { |
a0d0e21e LW |
6634 | if (i == -1) |
6635 | return 0; | |
760ac839 | 6636 | PerlIO_ungetc(fp,i); |
79072805 LW |
6637 | break; |
6638 | } | |
6639 | } while (i != EOF); | |
6640 | } | |
c07a80fd | 6641 | |
760ac839 LW |
6642 | /* See if we know enough about I/O mechanism to cheat it ! */ |
6643 | ||
6644 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 6645 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
6646 | enough here - and may even be a macro allowing compile |
6647 | time optimization. | |
6648 | */ | |
6649 | ||
6650 | if (PerlIO_fast_gets(fp)) { | |
6651 | ||
6652 | /* | |
6653 | * We're going to steal some values from the stdio struct | |
6654 | * and put EVERYTHING in the innermost loop into registers. | |
6655 | */ | |
6656 | register STDCHAR *ptr; | |
6657 | STRLEN bpx; | |
6658 | I32 shortbuffered; | |
6659 | ||
16660edb | 6660 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
6661 | /* An ungetc()d char is handled separately from the regular | |
6662 | * buffer, so we getc() it back out and stuff it in the buffer. | |
6663 | */ | |
6664 | i = PerlIO_getc(fp); | |
6665 | if (i == EOF) return 0; | |
6666 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
6667 | (*fp)->_cnt++; | |
6668 | #endif | |
c07a80fd | 6669 | |
c2960299 | 6670 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 6671 | |
a20bf0c3 | 6672 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b | 6673 | /* make sure we have the room */ |
7a5fa8a2 | 6674 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { |
e468d35b | 6675 | /* Not room for all of it |
7a5fa8a2 | 6676 | if we are looking for a separator and room for some |
e468d35b NIS |
6677 | */ |
6678 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7a5fa8a2 | 6679 | /* just process what we have room for */ |
79072805 LW |
6680 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
6681 | cnt -= shortbuffered; | |
6682 | } | |
6683 | else { | |
6684 | shortbuffered = 0; | |
bbce6d69 | 6685 | /* remember that cnt can be negative */ |
eb160463 | 6686 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
6687 | } |
6688 | } | |
7a5fa8a2 | 6689 | else |
79072805 | 6690 | shortbuffered = 0; |
3f7c398e | 6691 | bp = (STDCHAR*)SvPVX_const(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 6692 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 6693 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6694 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 6695 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 6696 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6697 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6698 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
6699 | for (;;) { |
6700 | screamer: | |
93a17b20 | 6701 | if (cnt > 0) { |
c07a80fd | 6702 | if (rslen) { |
760ac839 LW |
6703 | while (cnt > 0) { /* this | eat */ |
6704 | cnt--; | |
c07a80fd | 6705 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
6706 | goto thats_all_folks; /* screams | sed :-) */ | |
6707 | } | |
6708 | } | |
6709 | else { | |
1c846c1f NIS |
6710 | Copy(ptr, bp, cnt, char); /* this | eat */ |
6711 | bp += cnt; /* screams | dust */ | |
c07a80fd | 6712 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 6713 | cnt = 0; |
93a17b20 | 6714 | } |
79072805 LW |
6715 | } |
6716 | ||
748a9306 | 6717 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
6718 | cnt = shortbuffered; |
6719 | shortbuffered = 0; | |
3f7c398e | 6720 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
6721 | SvCUR_set(sv, bpx); |
6722 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
3f7c398e | 6723 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
6724 | continue; |
6725 | } | |
6726 | ||
16660edb | 6727 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
6728 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
6729 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 6730 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 6731 | #if 0 |
16660edb | 6732 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6733 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6734 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6735 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6736 | #endif |
1c846c1f | 6737 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 6738 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
6739 | another abstraction. */ | |
760ac839 | 6740 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 6741 | #if 0 |
16660edb | 6742 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6743 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6744 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6745 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6746 | #endif |
a20bf0c3 JH |
6747 | cnt = PerlIO_get_cnt(fp); |
6748 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 6749 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6750 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 6751 | |
748a9306 LW |
6752 | if (i == EOF) /* all done for ever? */ |
6753 | goto thats_really_all_folks; | |
6754 | ||
3f7c398e | 6755 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
6756 | SvCUR_set(sv, bpx); |
6757 | SvGROW(sv, bpx + cnt + 2); | |
3f7c398e | 6758 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
c07a80fd | 6759 | |
eb160463 | 6760 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 6761 | |
c07a80fd | 6762 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 6763 | goto thats_all_folks; |
79072805 LW |
6764 | } |
6765 | ||
6766 | thats_all_folks: | |
3f7c398e | 6767 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX_const(sv)) < rslen) || |
36477c24 | 6768 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 6769 | goto screamer; /* go back to the fray */ |
79072805 LW |
6770 | thats_really_all_folks: |
6771 | if (shortbuffered) | |
6772 | cnt += shortbuffered; | |
16660edb | 6773 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6774 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 6775 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 6776 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6777 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6778 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6779 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 6780 | *bp = '\0'; |
3f7c398e | 6781 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX_const(sv)); /* set length */ |
16660edb | 6782 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 6783 | "Screamer: done, len=%ld, string=|%.*s|\n", |
3f7c398e | 6784 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX_const(sv))); |
760ac839 LW |
6785 | } |
6786 | else | |
79072805 | 6787 | { |
6edd2cd5 | 6788 | /*The big, slow, and stupid way. */ |
27da23d5 | 6789 | #ifdef USE_HEAP_INSTEAD_OF_STACK /* Even slower way. */ |
6edd2cd5 JH |
6790 | STDCHAR *buf = 0; |
6791 | New(0, buf, 8192, STDCHAR); | |
6792 | assert(buf); | |
4d2c4e07 | 6793 | #else |
6edd2cd5 | 6794 | STDCHAR buf[8192]; |
4d2c4e07 | 6795 | #endif |
79072805 | 6796 | |
760ac839 | 6797 | screamer2: |
c07a80fd | 6798 | if (rslen) { |
6867be6d | 6799 | const register STDCHAR *bpe = buf + sizeof(buf); |
760ac839 | 6800 | bp = buf; |
eb160463 | 6801 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
6802 | ; /* keep reading */ |
6803 | cnt = bp - buf; | |
c07a80fd | 6804 | } |
6805 | else { | |
760ac839 | 6806 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 6807 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
6808 | * both args of ?: operator, causing EOF to change into 255 | |
6809 | */ | |
37be0adf | 6810 | if (cnt > 0) |
cbe9e203 JH |
6811 | i = (U8)buf[cnt - 1]; |
6812 | else | |
37be0adf | 6813 | i = EOF; |
c07a80fd | 6814 | } |
79072805 | 6815 | |
cbe9e203 JH |
6816 | if (cnt < 0) |
6817 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
6818 | if (append) | |
6819 | sv_catpvn(sv, (char *) buf, cnt); | |
6820 | else | |
6821 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 6822 | |
6823 | if (i != EOF && /* joy */ | |
6824 | (!rslen || | |
6825 | SvCUR(sv) < rslen || | |
3f7c398e | 6826 | memNE(SvPVX_const(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
6827 | { |
6828 | append = -1; | |
63e4d877 CS |
6829 | /* |
6830 | * If we're reading from a TTY and we get a short read, | |
6831 | * indicating that the user hit his EOF character, we need | |
6832 | * to notice it now, because if we try to read from the TTY | |
6833 | * again, the EOF condition will disappear. | |
6834 | * | |
6835 | * The comparison of cnt to sizeof(buf) is an optimization | |
6836 | * that prevents unnecessary calls to feof(). | |
6837 | * | |
6838 | * - jik 9/25/96 | |
6839 | */ | |
6840 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
6841 | goto screamer2; | |
79072805 | 6842 | } |
6edd2cd5 | 6843 | |
27da23d5 | 6844 | #ifdef USE_HEAP_INSTEAD_OF_STACK |
6edd2cd5 JH |
6845 | Safefree(buf); |
6846 | #endif | |
79072805 LW |
6847 | } |
6848 | ||
8bfdd7d9 | 6849 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 6850 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 6851 | i = PerlIO_getc(fp); |
79072805 | 6852 | if (i != '\n') { |
760ac839 | 6853 | PerlIO_ungetc(fp,i); |
79072805 LW |
6854 | break; |
6855 | } | |
6856 | } | |
6857 | } | |
c07a80fd | 6858 | |
efd8b2ba | 6859 | return_string_or_null: |
c07a80fd | 6860 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
6861 | } |
6862 | ||
954c1994 GS |
6863 | /* |
6864 | =for apidoc sv_inc | |
6865 | ||
645c22ef DM |
6866 | Auto-increment of the value in the SV, doing string to numeric conversion |
6867 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6868 | |
6869 | =cut | |
6870 | */ | |
6871 | ||
79072805 | 6872 | void |
864dbfa3 | 6873 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
6874 | { |
6875 | register char *d; | |
463ee0b2 | 6876 | int flags; |
79072805 LW |
6877 | |
6878 | if (!sv) | |
6879 | return; | |
b23a5f78 GB |
6880 | if (SvGMAGICAL(sv)) |
6881 | mg_get(sv); | |
ed6116ce | 6882 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6883 | if (SvIsCOW(sv)) |
6884 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6885 | if (SvREADONLY(sv)) { |
923e4eb5 | 6886 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 6887 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6888 | } |
a0d0e21e | 6889 | if (SvROK(sv)) { |
b5be31e9 | 6890 | IV i; |
9e7bc3e8 JD |
6891 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
6892 | return; | |
56431972 | 6893 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6894 | sv_unref(sv); |
6895 | sv_setiv(sv, i); | |
a0d0e21e | 6896 | } |
ed6116ce | 6897 | } |
8990e307 | 6898 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6899 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
6900 | /* It's (privately or publicly) a float, but not tested as an | |
6901 | integer, so test it to see. */ | |
d460ef45 | 6902 | (void) SvIV(sv); |
28e5dec8 JH |
6903 | flags = SvFLAGS(sv); |
6904 | } | |
6905 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
6906 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6907 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6908 | oops_its_int: |
59d8ce62 | 6909 | #endif |
25da4f38 IZ |
6910 | if (SvIsUV(sv)) { |
6911 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 6912 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
6913 | else |
6914 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 6915 | SvUV_set(sv, SvUVX(sv) + 1); |
25da4f38 IZ |
6916 | } else { |
6917 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 6918 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
6919 | else { |
6920 | (void)SvIOK_only(sv); | |
45977657 | 6921 | SvIV_set(sv, SvIVX(sv) + 1); |
1c846c1f | 6922 | } |
55497cff | 6923 | } |
79072805 LW |
6924 | return; |
6925 | } | |
28e5dec8 JH |
6926 | if (flags & SVp_NOK) { |
6927 | (void)SvNOK_only(sv); | |
9d6ce603 | 6928 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6929 | return; |
6930 | } | |
6931 | ||
3f7c398e | 6932 | if (!(flags & SVp_POK) || !*SvPVX_const(sv)) { |
28e5dec8 | 6933 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
f5282e15 | 6934 | sv_upgrade(sv, ((flags & SVTYPEMASK) > SVt_IV ? SVt_PVIV : SVt_IV)); |
28e5dec8 | 6935 | (void)SvIOK_only(sv); |
45977657 | 6936 | SvIV_set(sv, 1); |
79072805 LW |
6937 | return; |
6938 | } | |
463ee0b2 | 6939 | d = SvPVX(sv); |
79072805 LW |
6940 | while (isALPHA(*d)) d++; |
6941 | while (isDIGIT(*d)) d++; | |
6942 | if (*d) { | |
28e5dec8 | 6943 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 6944 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
6945 | warnings. Probably ought to make the sv_iv_please() that does |
6946 | the conversion if possible, and silently. */ | |
504618e9 | 6947 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6948 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6949 | /* Need to try really hard to see if it's an integer. | |
6950 | 9.22337203685478e+18 is an integer. | |
6951 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6952 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
6953 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
6954 | or we go insane. */ | |
d460ef45 | 6955 | |
28e5dec8 JH |
6956 | (void) sv_2iv(sv); |
6957 | if (SvIOK(sv)) | |
6958 | goto oops_its_int; | |
6959 | ||
6960 | /* sv_2iv *should* have made this an NV */ | |
6961 | if (flags & SVp_NOK) { | |
6962 | (void)SvNOK_only(sv); | |
9d6ce603 | 6963 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6964 | return; |
6965 | } | |
6966 | /* I don't think we can get here. Maybe I should assert this | |
6967 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6968 | Fall through. */ | |
6969 | #if defined(USE_LONG_DOUBLE) | |
6970 | 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 | 6971 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 6972 | #else |
1779d84d | 6973 | 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 | 6974 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
6975 | #endif |
6976 | } | |
6977 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 6978 | sv_setnv(sv,Atof(SvPVX_const(sv)) + 1.0); |
79072805 LW |
6979 | return; |
6980 | } | |
6981 | d--; | |
3f7c398e | 6982 | while (d >= SvPVX_const(sv)) { |
79072805 LW |
6983 | if (isDIGIT(*d)) { |
6984 | if (++*d <= '9') | |
6985 | return; | |
6986 | *(d--) = '0'; | |
6987 | } | |
6988 | else { | |
9d116dd7 JH |
6989 | #ifdef EBCDIC |
6990 | /* MKS: The original code here died if letters weren't consecutive. | |
6991 | * at least it didn't have to worry about non-C locales. The | |
6992 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 6993 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
6994 | * [A-Za-z] are accepted by isALPHA in the C locale. |
6995 | */ | |
6996 | if (*d != 'z' && *d != 'Z') { | |
6997 | do { ++*d; } while (!isALPHA(*d)); | |
6998 | return; | |
6999 | } | |
7000 | *(d--) -= 'z' - 'a'; | |
7001 | #else | |
79072805 LW |
7002 | ++*d; |
7003 | if (isALPHA(*d)) | |
7004 | return; | |
7005 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 7006 | #endif |
79072805 LW |
7007 | } |
7008 | } | |
7009 | /* oh,oh, the number grew */ | |
7010 | SvGROW(sv, SvCUR(sv) + 2); | |
b162af07 | 7011 | SvCUR_set(sv, SvCUR(sv) + 1); |
3f7c398e | 7012 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX_const(sv); d--) |
79072805 LW |
7013 | *d = d[-1]; |
7014 | if (isDIGIT(d[1])) | |
7015 | *d = '1'; | |
7016 | else | |
7017 | *d = d[1]; | |
7018 | } | |
7019 | ||
954c1994 GS |
7020 | /* |
7021 | =for apidoc sv_dec | |
7022 | ||
645c22ef DM |
7023 | Auto-decrement of the value in the SV, doing string to numeric conversion |
7024 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7025 | |
7026 | =cut | |
7027 | */ | |
7028 | ||
79072805 | 7029 | void |
864dbfa3 | 7030 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 7031 | { |
463ee0b2 LW |
7032 | int flags; |
7033 | ||
79072805 LW |
7034 | if (!sv) |
7035 | return; | |
b23a5f78 GB |
7036 | if (SvGMAGICAL(sv)) |
7037 | mg_get(sv); | |
ed6116ce | 7038 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7039 | if (SvIsCOW(sv)) |
7040 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7041 | if (SvREADONLY(sv)) { |
923e4eb5 | 7042 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7043 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7044 | } |
a0d0e21e | 7045 | if (SvROK(sv)) { |
b5be31e9 | 7046 | IV i; |
9e7bc3e8 JD |
7047 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
7048 | return; | |
56431972 | 7049 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7050 | sv_unref(sv); |
7051 | sv_setiv(sv, i); | |
a0d0e21e | 7052 | } |
ed6116ce | 7053 | } |
28e5dec8 JH |
7054 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
7055 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 7056 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7057 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
7058 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7059 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7060 | oops_its_int: |
59d8ce62 | 7061 | #endif |
25da4f38 IZ |
7062 | if (SvIsUV(sv)) { |
7063 | if (SvUVX(sv) == 0) { | |
7064 | (void)SvIOK_only(sv); | |
45977657 | 7065 | SvIV_set(sv, -1); |
25da4f38 IZ |
7066 | } |
7067 | else { | |
7068 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 7069 | SvUV_set(sv, SvUVX(sv) + 1); |
1c846c1f | 7070 | } |
25da4f38 IZ |
7071 | } else { |
7072 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 7073 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
7074 | else { |
7075 | (void)SvIOK_only(sv); | |
45977657 | 7076 | SvIV_set(sv, SvIVX(sv) - 1); |
1c846c1f | 7077 | } |
55497cff | 7078 | } |
7079 | return; | |
7080 | } | |
28e5dec8 | 7081 | if (flags & SVp_NOK) { |
9d6ce603 | 7082 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
7083 | (void)SvNOK_only(sv); |
7084 | return; | |
7085 | } | |
8990e307 | 7086 | if (!(flags & SVp_POK)) { |
ef088171 NC |
7087 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
7088 | sv_upgrade(sv, ((flags & SVTYPEMASK) > SVt_IV) ? SVt_PVIV : SVt_IV); | |
7089 | SvIV_set(sv, -1); | |
7090 | (void)SvIOK_only(sv); | |
79072805 LW |
7091 | return; |
7092 | } | |
28e5dec8 JH |
7093 | #ifdef PERL_PRESERVE_IVUV |
7094 | { | |
504618e9 | 7095 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7096 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7097 | /* Need to try really hard to see if it's an integer. | |
7098 | 9.22337203685478e+18 is an integer. | |
7099 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7100 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
7101 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
7102 | or we go insane. */ | |
d460ef45 | 7103 | |
28e5dec8 JH |
7104 | (void) sv_2iv(sv); |
7105 | if (SvIOK(sv)) | |
7106 | goto oops_its_int; | |
7107 | ||
7108 | /* sv_2iv *should* have made this an NV */ | |
7109 | if (flags & SVp_NOK) { | |
7110 | (void)SvNOK_only(sv); | |
9d6ce603 | 7111 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
7112 | return; |
7113 | } | |
7114 | /* I don't think we can get here. Maybe I should assert this | |
7115 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7116 | Fall through. */ | |
7117 | #if defined(USE_LONG_DOUBLE) | |
7118 | 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 | 7119 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 7120 | #else |
1779d84d | 7121 | 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 | 7122 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
7123 | #endif |
7124 | } | |
7125 | } | |
7126 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 7127 | sv_setnv(sv,Atof(SvPVX_const(sv)) - 1.0); /* punt */ |
79072805 LW |
7128 | } |
7129 | ||
954c1994 GS |
7130 | /* |
7131 | =for apidoc sv_mortalcopy | |
7132 | ||
645c22ef | 7133 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
7134 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
7135 | explicit call to FREETMPS, or by an implicit call at places such as | |
7136 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
7137 | |
7138 | =cut | |
7139 | */ | |
7140 | ||
79072805 LW |
7141 | /* Make a string that will exist for the duration of the expression |
7142 | * evaluation. Actually, it may have to last longer than that, but | |
7143 | * hopefully we won't free it until it has been assigned to a | |
7144 | * permanent location. */ | |
7145 | ||
7146 | SV * | |
864dbfa3 | 7147 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 7148 | { |
463ee0b2 | 7149 | register SV *sv; |
b881518d | 7150 | |
4561caa4 | 7151 | new_SV(sv); |
79072805 | 7152 | sv_setsv(sv,oldstr); |
677b06e3 GS |
7153 | EXTEND_MORTAL(1); |
7154 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
7155 | SvTEMP_on(sv); |
7156 | return sv; | |
7157 | } | |
7158 | ||
954c1994 GS |
7159 | /* |
7160 | =for apidoc sv_newmortal | |
7161 | ||
645c22ef | 7162 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
7163 | set to 1. It will be destroyed "soon", either by an explicit call to |
7164 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
7165 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
7166 | |
7167 | =cut | |
7168 | */ | |
7169 | ||
8990e307 | 7170 | SV * |
864dbfa3 | 7171 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
7172 | { |
7173 | register SV *sv; | |
7174 | ||
4561caa4 | 7175 | new_SV(sv); |
8990e307 | 7176 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
7177 | EXTEND_MORTAL(1); |
7178 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
7179 | return sv; |
7180 | } | |
7181 | ||
954c1994 GS |
7182 | /* |
7183 | =for apidoc sv_2mortal | |
7184 | ||
d4236ebc DM |
7185 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
7186 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
7187 | statement boundaries. SvTEMP() is turned on which means that the SV's |
7188 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
7189 | and C<sv_mortalcopy>. | |
954c1994 GS |
7190 | |
7191 | =cut | |
7192 | */ | |
7193 | ||
79072805 | 7194 | SV * |
864dbfa3 | 7195 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 | 7196 | { |
27da23d5 | 7197 | dVAR; |
79072805 LW |
7198 | if (!sv) |
7199 | return sv; | |
d689ffdd | 7200 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 7201 | return sv; |
677b06e3 GS |
7202 | EXTEND_MORTAL(1); |
7203 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 7204 | SvTEMP_on(sv); |
79072805 LW |
7205 | return sv; |
7206 | } | |
7207 | ||
954c1994 GS |
7208 | /* |
7209 | =for apidoc newSVpv | |
7210 | ||
7211 | Creates a new SV and copies a string into it. The reference count for the | |
7212 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
7213 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
7214 | ||
7215 | =cut | |
7216 | */ | |
7217 | ||
79072805 | 7218 | SV * |
864dbfa3 | 7219 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 7220 | { |
463ee0b2 | 7221 | register SV *sv; |
79072805 | 7222 | |
4561caa4 | 7223 | new_SV(sv); |
616d8c9c | 7224 | sv_setpvn(sv,s,len ? len : strlen(s)); |
79072805 LW |
7225 | return sv; |
7226 | } | |
7227 | ||
954c1994 GS |
7228 | /* |
7229 | =for apidoc newSVpvn | |
7230 | ||
7231 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 7232 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 7233 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 7234 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
7235 | |
7236 | =cut | |
7237 | */ | |
7238 | ||
9da1e3b5 | 7239 | SV * |
864dbfa3 | 7240 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7241 | { |
7242 | register SV *sv; | |
7243 | ||
7244 | new_SV(sv); | |
9da1e3b5 MUN |
7245 | sv_setpvn(sv,s,len); |
7246 | return sv; | |
7247 | } | |
7248 | ||
bd08039b NC |
7249 | |
7250 | /* | |
926f8064 | 7251 | =for apidoc newSVhek |
bd08039b NC |
7252 | |
7253 | Creates a new SV from the hash key structure. It will generate scalars that | |
5aaec2b4 NC |
7254 | point to the shared string table where possible. Returns a new (undefined) |
7255 | SV if the hek is NULL. | |
bd08039b NC |
7256 | |
7257 | =cut | |
7258 | */ | |
7259 | ||
7260 | SV * | |
c1b02ed8 | 7261 | Perl_newSVhek(pTHX_ const HEK *hek) |
bd08039b | 7262 | { |
5aaec2b4 NC |
7263 | if (!hek) { |
7264 | SV *sv; | |
7265 | ||
7266 | new_SV(sv); | |
7267 | return sv; | |
7268 | } | |
7269 | ||
bd08039b NC |
7270 | if (HEK_LEN(hek) == HEf_SVKEY) { |
7271 | return newSVsv(*(SV**)HEK_KEY(hek)); | |
7272 | } else { | |
7273 | const int flags = HEK_FLAGS(hek); | |
7274 | if (flags & HVhek_WASUTF8) { | |
7275 | /* Trouble :-) | |
7276 | Andreas would like keys he put in as utf8 to come back as utf8 | |
7277 | */ | |
7278 | STRLEN utf8_len = HEK_LEN(hek); | |
7279 | U8 *as_utf8 = bytes_to_utf8 ((U8*)HEK_KEY(hek), &utf8_len); | |
7280 | SV *sv = newSVpvn ((char*)as_utf8, utf8_len); | |
7281 | ||
7282 | SvUTF8_on (sv); | |
7283 | Safefree (as_utf8); /* bytes_to_utf8() allocates a new string */ | |
7284 | return sv; | |
7285 | } else if (flags & HVhek_REHASH) { | |
7286 | /* We don't have a pointer to the hv, so we have to replicate the | |
7287 | flag into every HEK. This hv is using custom a hasing | |
7288 | algorithm. Hence we can't return a shared string scalar, as | |
7289 | that would contain the (wrong) hash value, and might get passed | |
7290 | into an hv routine with a regular hash */ | |
7291 | ||
7292 | SV *sv = newSVpvn (HEK_KEY(hek), HEK_LEN(hek)); | |
7293 | if (HEK_UTF8(hek)) | |
7294 | SvUTF8_on (sv); | |
7295 | return sv; | |
7296 | } | |
7297 | /* This will be overwhelminly the most common case. */ | |
7298 | return newSVpvn_share(HEK_KEY(hek), | |
7299 | (HEK_UTF8(hek) ? -HEK_LEN(hek) : HEK_LEN(hek)), | |
7300 | HEK_HASH(hek)); | |
7301 | } | |
7302 | } | |
7303 | ||
1c846c1f NIS |
7304 | /* |
7305 | =for apidoc newSVpvn_share | |
7306 | ||
3f7c398e | 7307 | Creates a new SV with its SvPVX_const pointing to a shared string in the string |
645c22ef DM |
7308 | table. If the string does not already exist in the table, it is created |
7309 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7310 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7311 | otherwise the hash is computed. The idea here is that as the string table | |
3f7c398e | 7312 | is used for shared hash keys these strings will have SvPVX_const == HeKEY and |
645c22ef | 7313 | hash lookup will avoid string compare. |
1c846c1f NIS |
7314 | |
7315 | =cut | |
7316 | */ | |
7317 | ||
7318 | SV * | |
c3654f1a | 7319 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7320 | { |
7321 | register SV *sv; | |
c3654f1a IH |
7322 | bool is_utf8 = FALSE; |
7323 | if (len < 0) { | |
77caf834 | 7324 | STRLEN tmplen = -len; |
c3654f1a | 7325 | is_utf8 = TRUE; |
75a54232 | 7326 | /* See the note in hv.c:hv_fetch() --jhi */ |
e1ec3a88 | 7327 | src = (char*)bytes_from_utf8((const U8*)src, &tmplen, &is_utf8); |
75a54232 JH |
7328 | len = tmplen; |
7329 | } | |
1c846c1f | 7330 | if (!hash) |
5afd6d42 | 7331 | PERL_HASH(hash, src, len); |
1c846c1f | 7332 | new_SV(sv); |
bdd68bc3 | 7333 | sv_upgrade(sv, SVt_PV); |
f880fe2f | 7334 | SvPV_set(sv, sharepvn(src, is_utf8?-len:len, hash)); |
b162af07 | 7335 | SvCUR_set(sv, len); |
b162af07 | 7336 | SvLEN_set(sv, 0); |
1c846c1f NIS |
7337 | SvREADONLY_on(sv); |
7338 | SvFAKE_on(sv); | |
7339 | SvPOK_on(sv); | |
c3654f1a IH |
7340 | if (is_utf8) |
7341 | SvUTF8_on(sv); | |
1c846c1f NIS |
7342 | return sv; |
7343 | } | |
7344 | ||
645c22ef | 7345 | |
cea2e8a9 | 7346 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7347 | |
7348 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7349 | * version of the main function, (which may itself be aliased to us). | |
7350 | * Don't access this version directly. | |
7351 | */ | |
7352 | ||
46fc3d4c | 7353 | SV * |
cea2e8a9 | 7354 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7355 | { |
cea2e8a9 | 7356 | dTHX; |
46fc3d4c | 7357 | register SV *sv; |
7358 | va_list args; | |
46fc3d4c | 7359 | va_start(args, pat); |
c5be433b | 7360 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7361 | va_end(args); |
7362 | return sv; | |
7363 | } | |
cea2e8a9 | 7364 | #endif |
46fc3d4c | 7365 | |
954c1994 GS |
7366 | /* |
7367 | =for apidoc newSVpvf | |
7368 | ||
645c22ef | 7369 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7370 | C<sprintf>. |
7371 | ||
7372 | =cut | |
7373 | */ | |
7374 | ||
cea2e8a9 GS |
7375 | SV * |
7376 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7377 | { | |
7378 | register SV *sv; | |
7379 | va_list args; | |
cea2e8a9 | 7380 | va_start(args, pat); |
c5be433b | 7381 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7382 | va_end(args); |
7383 | return sv; | |
7384 | } | |
46fc3d4c | 7385 | |
645c22ef DM |
7386 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7387 | ||
79072805 | 7388 | SV * |
c5be433b GS |
7389 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7390 | { | |
7391 | register SV *sv; | |
7392 | new_SV(sv); | |
7393 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7394 | return sv; | |
7395 | } | |
7396 | ||
954c1994 GS |
7397 | /* |
7398 | =for apidoc newSVnv | |
7399 | ||
7400 | Creates a new SV and copies a floating point value into it. | |
7401 | The reference count for the SV is set to 1. | |
7402 | ||
7403 | =cut | |
7404 | */ | |
7405 | ||
c5be433b | 7406 | SV * |
65202027 | 7407 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7408 | { |
463ee0b2 | 7409 | register SV *sv; |
79072805 | 7410 | |
4561caa4 | 7411 | new_SV(sv); |
79072805 LW |
7412 | sv_setnv(sv,n); |
7413 | return sv; | |
7414 | } | |
7415 | ||
954c1994 GS |
7416 | /* |
7417 | =for apidoc newSViv | |
7418 | ||
7419 | Creates a new SV and copies an integer into it. The reference count for the | |
7420 | SV is set to 1. | |
7421 | ||
7422 | =cut | |
7423 | */ | |
7424 | ||
79072805 | 7425 | SV * |
864dbfa3 | 7426 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7427 | { |
463ee0b2 | 7428 | register SV *sv; |
79072805 | 7429 | |
4561caa4 | 7430 | new_SV(sv); |
79072805 LW |
7431 | sv_setiv(sv,i); |
7432 | return sv; | |
7433 | } | |
7434 | ||
954c1994 | 7435 | /* |
1a3327fb JH |
7436 | =for apidoc newSVuv |
7437 | ||
7438 | Creates a new SV and copies an unsigned integer into it. | |
7439 | The reference count for the SV is set to 1. | |
7440 | ||
7441 | =cut | |
7442 | */ | |
7443 | ||
7444 | SV * | |
7445 | Perl_newSVuv(pTHX_ UV u) | |
7446 | { | |
7447 | register SV *sv; | |
7448 | ||
7449 | new_SV(sv); | |
7450 | sv_setuv(sv,u); | |
7451 | return sv; | |
7452 | } | |
7453 | ||
7454 | /* | |
954c1994 GS |
7455 | =for apidoc newRV_noinc |
7456 | ||
7457 | Creates an RV wrapper for an SV. The reference count for the original | |
7458 | SV is B<not> incremented. | |
7459 | ||
7460 | =cut | |
7461 | */ | |
7462 | ||
2304df62 | 7463 | SV * |
864dbfa3 | 7464 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7465 | { |
7466 | register SV *sv; | |
7467 | ||
4561caa4 | 7468 | new_SV(sv); |
2304df62 | 7469 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7470 | SvTEMP_off(tmpRef); |
b162af07 | 7471 | SvRV_set(sv, tmpRef); |
2304df62 | 7472 | SvROK_on(sv); |
2304df62 AD |
7473 | return sv; |
7474 | } | |
7475 | ||
ff276b08 | 7476 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7477 | * newRV_inc is in fact #defined to newRV in sv.h |
7478 | */ | |
7479 | ||
5f05dabc | 7480 | SV * |
864dbfa3 | 7481 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7482 | { |
5f6447b6 | 7483 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7484 | } |
5f05dabc | 7485 | |
954c1994 GS |
7486 | /* |
7487 | =for apidoc newSVsv | |
7488 | ||
7489 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7490 | (Uses C<sv_setsv>). |
954c1994 GS |
7491 | |
7492 | =cut | |
7493 | */ | |
7494 | ||
79072805 | 7495 | SV * |
864dbfa3 | 7496 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7497 | { |
463ee0b2 | 7498 | register SV *sv; |
79072805 LW |
7499 | |
7500 | if (!old) | |
7501 | return Nullsv; | |
8990e307 | 7502 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7503 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7504 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7505 | return Nullsv; |
7506 | } | |
4561caa4 | 7507 | new_SV(sv); |
e90aabeb NC |
7508 | /* SV_GMAGIC is the default for sv_setv() |
7509 | SV_NOSTEAL prevents TEMP buffers being, well, stolen, and saves games | |
7510 | with SvTEMP_off and SvTEMP_on round a call to sv_setsv. */ | |
7511 | sv_setsv_flags(sv, old, SV_GMAGIC | SV_NOSTEAL); | |
463ee0b2 | 7512 | return sv; |
79072805 LW |
7513 | } |
7514 | ||
645c22ef DM |
7515 | /* |
7516 | =for apidoc sv_reset | |
7517 | ||
7518 | Underlying implementation for the C<reset> Perl function. | |
7519 | Note that the perl-level function is vaguely deprecated. | |
7520 | ||
7521 | =cut | |
7522 | */ | |
7523 | ||
79072805 | 7524 | void |
e1ec3a88 | 7525 | Perl_sv_reset(pTHX_ register const char *s, HV *stash) |
79072805 | 7526 | { |
27da23d5 | 7527 | dVAR; |
4802d5d7 | 7528 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7529 | |
49d8d3a1 MB |
7530 | if (!stash) |
7531 | return; | |
7532 | ||
79072805 | 7533 | if (!*s) { /* reset ?? searches */ |
8d2f4536 NC |
7534 | MAGIC *mg = mg_find((SV *)stash, PERL_MAGIC_symtab); |
7535 | if (mg) { | |
7536 | PMOP *pm = (PMOP *) mg->mg_obj; | |
7537 | while (pm) { | |
7538 | pm->op_pmdynflags &= ~PMdf_USED; | |
7539 | pm = pm->op_pmnext; | |
7540 | } | |
79072805 LW |
7541 | } |
7542 | return; | |
7543 | } | |
7544 | ||
7545 | /* reset variables */ | |
7546 | ||
7547 | if (!HvARRAY(stash)) | |
7548 | return; | |
463ee0b2 LW |
7549 | |
7550 | Zero(todo, 256, char); | |
79072805 | 7551 | while (*s) { |
b464bac0 AL |
7552 | I32 max; |
7553 | I32 i = (unsigned char)*s; | |
79072805 LW |
7554 | if (s[1] == '-') { |
7555 | s += 2; | |
7556 | } | |
4802d5d7 | 7557 | max = (unsigned char)*s++; |
79072805 | 7558 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7559 | todo[i] = 1; |
7560 | } | |
a0d0e21e | 7561 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
b464bac0 | 7562 | HE *entry; |
79072805 | 7563 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7564 | entry; |
7565 | entry = HeNEXT(entry)) | |
7566 | { | |
b464bac0 AL |
7567 | register GV *gv; |
7568 | register SV *sv; | |
7569 | ||
1edc1566 | 7570 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7571 | continue; |
1edc1566 | 7572 | gv = (GV*)HeVAL(entry); |
79072805 | 7573 | sv = GvSV(gv); |
e203899d NC |
7574 | if (sv) { |
7575 | if (SvTHINKFIRST(sv)) { | |
7576 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7577 | sv_unref(sv); | |
7578 | /* XXX Is this continue a bug? Why should THINKFIRST | |
7579 | exempt us from resetting arrays and hashes? */ | |
7580 | continue; | |
7581 | } | |
7582 | SvOK_off(sv); | |
7583 | if (SvTYPE(sv) >= SVt_PV) { | |
7584 | SvCUR_set(sv, 0); | |
7585 | if (SvPVX_const(sv) != Nullch) | |
7586 | *SvPVX(sv) = '\0'; | |
7587 | SvTAINT(sv); | |
7588 | } | |
79072805 LW |
7589 | } |
7590 | if (GvAV(gv)) { | |
7591 | av_clear(GvAV(gv)); | |
7592 | } | |
bfcb3514 | 7593 | if (GvHV(gv) && !HvNAME_get(GvHV(gv))) { |
463ee0b2 | 7594 | hv_clear(GvHV(gv)); |
2f42fcb0 | 7595 | #ifndef PERL_MICRO |
fa6a1c44 | 7596 | #ifdef USE_ENVIRON_ARRAY |
4efc5df6 GS |
7597 | if (gv == PL_envgv |
7598 | # ifdef USE_ITHREADS | |
7599 | && PL_curinterp == aTHX | |
7600 | # endif | |
7601 | ) | |
7602 | { | |
79072805 | 7603 | environ[0] = Nullch; |
4efc5df6 | 7604 | } |
a0d0e21e | 7605 | #endif |
2f42fcb0 | 7606 | #endif /* !PERL_MICRO */ |
79072805 LW |
7607 | } |
7608 | } | |
7609 | } | |
7610 | } | |
7611 | } | |
7612 | ||
645c22ef DM |
7613 | /* |
7614 | =for apidoc sv_2io | |
7615 | ||
7616 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7617 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7618 | named after the PV if we're a string. | |
7619 | ||
7620 | =cut | |
7621 | */ | |
7622 | ||
46fc3d4c | 7623 | IO* |
864dbfa3 | 7624 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7625 | { |
7626 | IO* io; | |
7627 | GV* gv; | |
7628 | ||
7629 | switch (SvTYPE(sv)) { | |
7630 | case SVt_PVIO: | |
7631 | io = (IO*)sv; | |
7632 | break; | |
7633 | case SVt_PVGV: | |
7634 | gv = (GV*)sv; | |
7635 | io = GvIO(gv); | |
7636 | if (!io) | |
cea2e8a9 | 7637 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 7638 | break; |
7639 | default: | |
7640 | if (!SvOK(sv)) | |
cea2e8a9 | 7641 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 7642 | if (SvROK(sv)) |
7643 | return sv_2io(SvRV(sv)); | |
7a5fd60d | 7644 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
46fc3d4c | 7645 | if (gv) |
7646 | io = GvIO(gv); | |
7647 | else | |
7648 | io = 0; | |
7649 | if (!io) | |
35c1215d | 7650 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 7651 | break; |
7652 | } | |
7653 | return io; | |
7654 | } | |
7655 | ||
645c22ef DM |
7656 | /* |
7657 | =for apidoc sv_2cv | |
7658 | ||
7659 | Using various gambits, try to get a CV from an SV; in addition, try if | |
7660 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
7661 | ||
7662 | =cut | |
7663 | */ | |
7664 | ||
79072805 | 7665 | CV * |
864dbfa3 | 7666 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 7667 | { |
27da23d5 | 7668 | dVAR; |
c04a4dfe JH |
7669 | GV *gv = Nullgv; |
7670 | CV *cv = Nullcv; | |
79072805 LW |
7671 | |
7672 | if (!sv) | |
93a17b20 | 7673 | return *gvp = Nullgv, Nullcv; |
79072805 | 7674 | switch (SvTYPE(sv)) { |
79072805 LW |
7675 | case SVt_PVCV: |
7676 | *st = CvSTASH(sv); | |
7677 | *gvp = Nullgv; | |
7678 | return (CV*)sv; | |
7679 | case SVt_PVHV: | |
7680 | case SVt_PVAV: | |
7681 | *gvp = Nullgv; | |
7682 | return Nullcv; | |
8990e307 LW |
7683 | case SVt_PVGV: |
7684 | gv = (GV*)sv; | |
a0d0e21e | 7685 | *gvp = gv; |
8990e307 LW |
7686 | *st = GvESTASH(gv); |
7687 | goto fix_gv; | |
7688 | ||
79072805 | 7689 | default: |
a0d0e21e LW |
7690 | if (SvGMAGICAL(sv)) |
7691 | mg_get(sv); | |
7692 | if (SvROK(sv)) { | |
f5284f61 IZ |
7693 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
7694 | tryAMAGICunDEREF(to_cv); | |
7695 | ||
62f274bf GS |
7696 | sv = SvRV(sv); |
7697 | if (SvTYPE(sv) == SVt_PVCV) { | |
7698 | cv = (CV*)sv; | |
7699 | *gvp = Nullgv; | |
7700 | *st = CvSTASH(cv); | |
7701 | return cv; | |
7702 | } | |
7703 | else if(isGV(sv)) | |
7704 | gv = (GV*)sv; | |
7705 | else | |
cea2e8a9 | 7706 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 7707 | } |
62f274bf | 7708 | else if (isGV(sv)) |
79072805 LW |
7709 | gv = (GV*)sv; |
7710 | else | |
7a5fd60d | 7711 | gv = gv_fetchsv(sv, lref, SVt_PVCV); |
79072805 LW |
7712 | *gvp = gv; |
7713 | if (!gv) | |
7714 | return Nullcv; | |
7715 | *st = GvESTASH(gv); | |
8990e307 | 7716 | fix_gv: |
8ebc5c01 | 7717 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 7718 | SV *tmpsv; |
748a9306 | 7719 | ENTER; |
4633a7c4 | 7720 | tmpsv = NEWSV(704,0); |
16660edb | 7721 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
7722 | /* XXX this is probably not what they think they're getting. |
7723 | * It has the same effect as "sub name;", i.e. just a forward | |
7724 | * declaration! */ | |
774d564b | 7725 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
7726 | newSVOP(OP_CONST, 0, tmpsv), |
7727 | Nullop, | |
8990e307 | 7728 | Nullop); |
748a9306 | 7729 | LEAVE; |
8ebc5c01 | 7730 | if (!GvCVu(gv)) |
35c1215d NC |
7731 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
7732 | sv); | |
8990e307 | 7733 | } |
8ebc5c01 | 7734 | return GvCVu(gv); |
79072805 LW |
7735 | } |
7736 | } | |
7737 | ||
c461cf8f JH |
7738 | /* |
7739 | =for apidoc sv_true | |
7740 | ||
7741 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
7742 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
7743 | instead use an in-line version. | |
c461cf8f JH |
7744 | |
7745 | =cut | |
7746 | */ | |
7747 | ||
79072805 | 7748 | I32 |
864dbfa3 | 7749 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 7750 | { |
8990e307 LW |
7751 | if (!sv) |
7752 | return 0; | |
79072805 | 7753 | if (SvPOK(sv)) { |
e1ec3a88 | 7754 | const register XPV* tXpv; |
4e35701f | 7755 | if ((tXpv = (XPV*)SvANY(sv)) && |
c2f1de04 | 7756 | (tXpv->xpv_cur > 1 || |
339049b0 | 7757 | (tXpv->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
79072805 LW |
7758 | return 1; |
7759 | else | |
7760 | return 0; | |
7761 | } | |
7762 | else { | |
7763 | if (SvIOK(sv)) | |
463ee0b2 | 7764 | return SvIVX(sv) != 0; |
79072805 LW |
7765 | else { |
7766 | if (SvNOK(sv)) | |
463ee0b2 | 7767 | return SvNVX(sv) != 0.0; |
79072805 | 7768 | else |
463ee0b2 | 7769 | return sv_2bool(sv); |
79072805 LW |
7770 | } |
7771 | } | |
7772 | } | |
79072805 | 7773 | |
645c22ef DM |
7774 | /* |
7775 | =for apidoc sv_iv | |
7776 | ||
7777 | A private implementation of the C<SvIVx> macro for compilers which can't | |
7778 | cope with complex macro expressions. Always use the macro instead. | |
7779 | ||
7780 | =cut | |
7781 | */ | |
7782 | ||
ff68c719 | 7783 | IV |
864dbfa3 | 7784 | Perl_sv_iv(pTHX_ register SV *sv) |
85e6fe83 | 7785 | { |
25da4f38 IZ |
7786 | if (SvIOK(sv)) { |
7787 | if (SvIsUV(sv)) | |
7788 | return (IV)SvUVX(sv); | |
ff68c719 | 7789 | return SvIVX(sv); |
25da4f38 | 7790 | } |
ff68c719 | 7791 | return sv_2iv(sv); |
85e6fe83 | 7792 | } |
85e6fe83 | 7793 | |
645c22ef DM |
7794 | /* |
7795 | =for apidoc sv_uv | |
7796 | ||
7797 | A private implementation of the C<SvUVx> macro for compilers which can't | |
7798 | cope with complex macro expressions. Always use the macro instead. | |
7799 | ||
7800 | =cut | |
7801 | */ | |
7802 | ||
ff68c719 | 7803 | UV |
864dbfa3 | 7804 | Perl_sv_uv(pTHX_ register SV *sv) |
ff68c719 | 7805 | { |
25da4f38 IZ |
7806 | if (SvIOK(sv)) { |
7807 | if (SvIsUV(sv)) | |
7808 | return SvUVX(sv); | |
7809 | return (UV)SvIVX(sv); | |
7810 | } | |
ff68c719 | 7811 | return sv_2uv(sv); |
7812 | } | |
85e6fe83 | 7813 | |
645c22ef DM |
7814 | /* |
7815 | =for apidoc sv_nv | |
7816 | ||
7817 | A private implementation of the C<SvNVx> macro for compilers which can't | |
7818 | cope with complex macro expressions. Always use the macro instead. | |
7819 | ||
7820 | =cut | |
7821 | */ | |
7822 | ||
65202027 | 7823 | NV |
864dbfa3 | 7824 | Perl_sv_nv(pTHX_ register SV *sv) |
79072805 | 7825 | { |
ff68c719 | 7826 | if (SvNOK(sv)) |
7827 | return SvNVX(sv); | |
7828 | return sv_2nv(sv); | |
79072805 | 7829 | } |
79072805 | 7830 | |
09540bc3 JH |
7831 | /* sv_pv() is now a macro using SvPV_nolen(); |
7832 | * this function provided for binary compatibility only | |
7833 | */ | |
7834 | ||
7835 | char * | |
7836 | Perl_sv_pv(pTHX_ SV *sv) | |
7837 | { | |
09540bc3 JH |
7838 | if (SvPOK(sv)) |
7839 | return SvPVX(sv); | |
7840 | ||
93524f2b | 7841 | return sv_2pv(sv, 0); |
09540bc3 JH |
7842 | } |
7843 | ||
645c22ef DM |
7844 | /* |
7845 | =for apidoc sv_pv | |
7846 | ||
baca2b92 | 7847 | Use the C<SvPV_nolen> macro instead |
645c22ef | 7848 | |
645c22ef DM |
7849 | =for apidoc sv_pvn |
7850 | ||
7851 | A private implementation of the C<SvPV> macro for compilers which can't | |
7852 | cope with complex macro expressions. Always use the macro instead. | |
7853 | ||
7854 | =cut | |
7855 | */ | |
7856 | ||
1fa8b10d | 7857 | char * |
864dbfa3 | 7858 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) |
79072805 | 7859 | { |
85e6fe83 LW |
7860 | if (SvPOK(sv)) { |
7861 | *lp = SvCUR(sv); | |
a0d0e21e | 7862 | return SvPVX(sv); |
85e6fe83 | 7863 | } |
463ee0b2 | 7864 | return sv_2pv(sv, lp); |
79072805 | 7865 | } |
79072805 | 7866 | |
6e9d1081 NC |
7867 | |
7868 | char * | |
7869 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
7870 | { | |
7871 | if (SvPOK(sv)) { | |
7872 | *lp = SvCUR(sv); | |
7873 | return SvPVX(sv); | |
7874 | } | |
7875 | return sv_2pv_flags(sv, lp, 0); | |
7876 | } | |
7877 | ||
09540bc3 JH |
7878 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); |
7879 | * this function provided for binary compatibility only | |
7880 | */ | |
7881 | ||
7882 | char * | |
7883 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
7884 | { | |
7885 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
7886 | } | |
7887 | ||
c461cf8f JH |
7888 | /* |
7889 | =for apidoc sv_pvn_force | |
7890 | ||
7891 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
7892 | A private implementation of the C<SvPV_force> macro for compilers which |
7893 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 7894 | |
8d6d96c1 HS |
7895 | =for apidoc sv_pvn_force_flags |
7896 | ||
7897 | Get a sensible string out of the SV somehow. | |
7898 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
7899 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
7900 | implemented in terms of this function. | |
645c22ef DM |
7901 | You normally want to use the various wrapper macros instead: see |
7902 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
7903 | |
7904 | =cut | |
7905 | */ | |
7906 | ||
7907 | char * | |
7908 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
7909 | { | |
a0d0e21e | 7910 | |
6fc92669 | 7911 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 7912 | sv_force_normal_flags(sv, 0); |
1c846c1f | 7913 | |
a0d0e21e | 7914 | if (SvPOK(sv)) { |
13c5b33c NC |
7915 | if (lp) |
7916 | *lp = SvCUR(sv); | |
a0d0e21e LW |
7917 | } |
7918 | else { | |
a3b680e6 | 7919 | char *s; |
13c5b33c NC |
7920 | STRLEN len; |
7921 | ||
4d84ee25 NC |
7922 | if (SvREADONLY(sv) && !(flags & SV_MUTABLE_RETURN)) { |
7923 | if (PL_op) | |
7924 | Perl_croak(aTHX_ "Can't coerce readonly %s to string in %s", | |
7925 | sv_reftype(sv,0), OP_NAME(PL_op)); | |
7926 | else | |
7927 | Perl_croak(aTHX_ "Can't coerce readonly %s to string", | |
7928 | sv_reftype(sv,0)); | |
7929 | } | |
748a9306 | 7930 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
cea2e8a9 | 7931 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 7932 | OP_NAME(PL_op)); |
a0d0e21e | 7933 | } |
4633a7c4 | 7934 | else |
13c5b33c NC |
7935 | s = sv_2pv_flags(sv, &len, flags); |
7936 | if (lp) | |
7937 | *lp = len; | |
7938 | ||
3f7c398e | 7939 | if (s != SvPVX_const(sv)) { /* Almost, but not quite, sv_setpvn() */ |
a0d0e21e LW |
7940 | if (SvROK(sv)) |
7941 | sv_unref(sv); | |
862a34c6 | 7942 | SvUPGRADE(sv, SVt_PV); /* Never FALSE */ |
a0d0e21e | 7943 | SvGROW(sv, len + 1); |
3f7c398e | 7944 | Move(s,SvPVX_const(sv),len,char); |
a0d0e21e LW |
7945 | SvCUR_set(sv, len); |
7946 | *SvEND(sv) = '\0'; | |
7947 | } | |
7948 | if (!SvPOK(sv)) { | |
7949 | SvPOK_on(sv); /* validate pointer */ | |
7950 | SvTAINT(sv); | |
1d7c1841 | 7951 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 7952 | PTR2UV(sv),SvPVX_const(sv))); |
a0d0e21e LW |
7953 | } |
7954 | } | |
4d84ee25 | 7955 | return SvPVX_mutable(sv); |
a0d0e21e LW |
7956 | } |
7957 | ||
09540bc3 JH |
7958 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); |
7959 | * this function provided for binary compatibility only | |
7960 | */ | |
7961 | ||
7962 | char * | |
7963 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
7964 | { | |
7965 | sv_utf8_downgrade(sv,0); | |
7966 | return sv_pv(sv); | |
7967 | } | |
7968 | ||
645c22ef DM |
7969 | /* |
7970 | =for apidoc sv_pvbyte | |
7971 | ||
baca2b92 | 7972 | Use C<SvPVbyte_nolen> instead. |
645c22ef | 7973 | |
645c22ef DM |
7974 | =for apidoc sv_pvbyten |
7975 | ||
7976 | A private implementation of the C<SvPVbyte> macro for compilers | |
7977 | which can't cope with complex macro expressions. Always use the macro | |
7978 | instead. | |
7979 | ||
7980 | =cut | |
7981 | */ | |
7982 | ||
7340a771 GS |
7983 | char * |
7984 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
7985 | { | |
ffebcc3e | 7986 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
7987 | return sv_pvn(sv,lp); |
7988 | } | |
7989 | ||
645c22ef DM |
7990 | /* |
7991 | =for apidoc sv_pvbyten_force | |
7992 | ||
7993 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
7994 | which can't cope with complex macro expressions. Always use the macro | |
7995 | instead. | |
7996 | ||
7997 | =cut | |
7998 | */ | |
7999 | ||
7340a771 GS |
8000 | char * |
8001 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
8002 | { | |
46ec2f14 | 8003 | sv_pvn_force(sv,lp); |
ffebcc3e | 8004 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
8005 | *lp = SvCUR(sv); |
8006 | return SvPVX(sv); | |
7340a771 GS |
8007 | } |
8008 | ||
09540bc3 JH |
8009 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
8010 | * this function provided for binary compatibility only | |
8011 | */ | |
8012 | ||
8013 | char * | |
8014 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
8015 | { | |
8016 | sv_utf8_upgrade(sv); | |
8017 | return sv_pv(sv); | |
8018 | } | |
8019 | ||
645c22ef DM |
8020 | /* |
8021 | =for apidoc sv_pvutf8 | |
8022 | ||
baca2b92 | 8023 | Use the C<SvPVutf8_nolen> macro instead |
645c22ef | 8024 | |
645c22ef DM |
8025 | =for apidoc sv_pvutf8n |
8026 | ||
8027 | A private implementation of the C<SvPVutf8> macro for compilers | |
8028 | which can't cope with complex macro expressions. Always use the macro | |
8029 | instead. | |
8030 | ||
8031 | =cut | |
8032 | */ | |
8033 | ||
7340a771 GS |
8034 | char * |
8035 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
8036 | { | |
560a288e | 8037 | sv_utf8_upgrade(sv); |
7340a771 GS |
8038 | return sv_pvn(sv,lp); |
8039 | } | |
8040 | ||
c461cf8f JH |
8041 | /* |
8042 | =for apidoc sv_pvutf8n_force | |
8043 | ||
645c22ef DM |
8044 | A private implementation of the C<SvPVutf8_force> macro for compilers |
8045 | which can't cope with complex macro expressions. Always use the macro | |
8046 | instead. | |
c461cf8f JH |
8047 | |
8048 | =cut | |
8049 | */ | |
8050 | ||
7340a771 GS |
8051 | char * |
8052 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
8053 | { | |
46ec2f14 | 8054 | sv_pvn_force(sv,lp); |
560a288e | 8055 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
8056 | *lp = SvCUR(sv); |
8057 | return SvPVX(sv); | |
7340a771 GS |
8058 | } |
8059 | ||
c461cf8f JH |
8060 | /* |
8061 | =for apidoc sv_reftype | |
8062 | ||
8063 | Returns a string describing what the SV is a reference to. | |
8064 | ||
8065 | =cut | |
8066 | */ | |
8067 | ||
1cb0ed9b | 8068 | char * |
bfed75c6 | 8069 | Perl_sv_reftype(pTHX_ const SV *sv, int ob) |
a0d0e21e | 8070 | { |
07409e01 NC |
8071 | /* The fact that I don't need to downcast to char * everywhere, only in ?: |
8072 | inside return suggests a const propagation bug in g++. */ | |
c86bf373 | 8073 | if (ob && SvOBJECT(sv)) { |
1b6737cc | 8074 | char * const name = HvNAME_get(SvSTASH(sv)); |
07409e01 | 8075 | return name ? name : (char *) "__ANON__"; |
c86bf373 | 8076 | } |
a0d0e21e LW |
8077 | else { |
8078 | switch (SvTYPE(sv)) { | |
8079 | case SVt_NULL: | |
8080 | case SVt_IV: | |
8081 | case SVt_NV: | |
8082 | case SVt_RV: | |
8083 | case SVt_PV: | |
8084 | case SVt_PVIV: | |
8085 | case SVt_PVNV: | |
8086 | case SVt_PVMG: | |
8087 | case SVt_PVBM: | |
1cb0ed9b | 8088 | if (SvVOK(sv)) |
439cb1c4 | 8089 | return "VSTRING"; |
a0d0e21e LW |
8090 | if (SvROK(sv)) |
8091 | return "REF"; | |
8092 | else | |
8093 | return "SCALAR"; | |
1cb0ed9b | 8094 | |
07409e01 | 8095 | case SVt_PVLV: return (char *) (SvROK(sv) ? "REF" |
be65207d DM |
8096 | /* tied lvalues should appear to be |
8097 | * scalars for backwards compatitbility */ | |
8098 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
07409e01 | 8099 | ? "SCALAR" : "LVALUE"); |
a0d0e21e LW |
8100 | case SVt_PVAV: return "ARRAY"; |
8101 | case SVt_PVHV: return "HASH"; | |
8102 | case SVt_PVCV: return "CODE"; | |
8103 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 8104 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 8105 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
8106 | default: return "UNKNOWN"; |
8107 | } | |
8108 | } | |
8109 | } | |
8110 | ||
954c1994 GS |
8111 | /* |
8112 | =for apidoc sv_isobject | |
8113 | ||
8114 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
8115 | object. If the SV is not an RV, or if the object is not blessed, then this | |
8116 | will return false. | |
8117 | ||
8118 | =cut | |
8119 | */ | |
8120 | ||
463ee0b2 | 8121 | int |
864dbfa3 | 8122 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 8123 | { |
68dc0745 | 8124 | if (!sv) |
8125 | return 0; | |
8126 | if (SvGMAGICAL(sv)) | |
8127 | mg_get(sv); | |
85e6fe83 LW |
8128 | if (!SvROK(sv)) |
8129 | return 0; | |
8130 | sv = (SV*)SvRV(sv); | |
8131 | if (!SvOBJECT(sv)) | |
8132 | return 0; | |
8133 | return 1; | |
8134 | } | |
8135 | ||
954c1994 GS |
8136 | /* |
8137 | =for apidoc sv_isa | |
8138 | ||
8139 | Returns a boolean indicating whether the SV is blessed into the specified | |
8140 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
8141 | an inheritance relationship. | |
8142 | ||
8143 | =cut | |
8144 | */ | |
8145 | ||
85e6fe83 | 8146 | int |
864dbfa3 | 8147 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 8148 | { |
bfcb3514 | 8149 | const char *hvname; |
68dc0745 | 8150 | if (!sv) |
8151 | return 0; | |
8152 | if (SvGMAGICAL(sv)) | |
8153 | mg_get(sv); | |
ed6116ce | 8154 | if (!SvROK(sv)) |
463ee0b2 | 8155 | return 0; |
ed6116ce LW |
8156 | sv = (SV*)SvRV(sv); |
8157 | if (!SvOBJECT(sv)) | |
463ee0b2 | 8158 | return 0; |
bfcb3514 NC |
8159 | hvname = HvNAME_get(SvSTASH(sv)); |
8160 | if (!hvname) | |
e27ad1f2 | 8161 | return 0; |
463ee0b2 | 8162 | |
bfcb3514 | 8163 | return strEQ(hvname, name); |
463ee0b2 LW |
8164 | } |
8165 | ||
954c1994 GS |
8166 | /* |
8167 | =for apidoc newSVrv | |
8168 | ||
8169 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
8170 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
8171 | be blessed in the specified package. The new SV is returned and its | |
8172 | reference count is 1. | |
8173 | ||
8174 | =cut | |
8175 | */ | |
8176 | ||
463ee0b2 | 8177 | SV* |
864dbfa3 | 8178 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 8179 | { |
463ee0b2 LW |
8180 | SV *sv; |
8181 | ||
4561caa4 | 8182 | new_SV(sv); |
51cf62d8 | 8183 | |
765f542d | 8184 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 8185 | SvAMAGIC_off(rv); |
51cf62d8 | 8186 | |
0199fce9 | 8187 | if (SvTYPE(rv) >= SVt_PVMG) { |
a3b680e6 | 8188 | const U32 refcnt = SvREFCNT(rv); |
0199fce9 JD |
8189 | SvREFCNT(rv) = 0; |
8190 | sv_clear(rv); | |
8191 | SvFLAGS(rv) = 0; | |
8192 | SvREFCNT(rv) = refcnt; | |
8193 | } | |
8194 | ||
51cf62d8 | 8195 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
8196 | sv_upgrade(rv, SVt_RV); |
8197 | else if (SvTYPE(rv) > SVt_RV) { | |
8bd4d4c5 | 8198 | SvPV_free(rv); |
0199fce9 JD |
8199 | SvCUR_set(rv, 0); |
8200 | SvLEN_set(rv, 0); | |
8201 | } | |
51cf62d8 | 8202 | |
0c34ef67 | 8203 | SvOK_off(rv); |
b162af07 | 8204 | SvRV_set(rv, sv); |
ed6116ce | 8205 | SvROK_on(rv); |
463ee0b2 | 8206 | |
a0d0e21e | 8207 | if (classname) { |
1b6737cc | 8208 | HV* const stash = gv_stashpv(classname, TRUE); |
a0d0e21e LW |
8209 | (void)sv_bless(rv, stash); |
8210 | } | |
8211 | return sv; | |
8212 | } | |
8213 | ||
954c1994 GS |
8214 | /* |
8215 | =for apidoc sv_setref_pv | |
8216 | ||
8217 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
8218 | argument will be upgraded to an RV. That RV will be modified to point to | |
8219 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
8220 | into the SV. The C<classname> argument indicates the package for the | |
8221 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8222 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8223 | |
8224 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
8225 | objects will become corrupted by the pointer copy process. | |
8226 | ||
8227 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
8228 | ||
8229 | =cut | |
8230 | */ | |
8231 | ||
a0d0e21e | 8232 | SV* |
864dbfa3 | 8233 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 8234 | { |
189b2af5 | 8235 | if (!pv) { |
3280af22 | 8236 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
8237 | SvSETMAGIC(rv); |
8238 | } | |
a0d0e21e | 8239 | else |
56431972 | 8240 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
8241 | return rv; |
8242 | } | |
8243 | ||
954c1994 GS |
8244 | /* |
8245 | =for apidoc sv_setref_iv | |
8246 | ||
8247 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
8248 | argument will be upgraded to an RV. That RV will be modified to point to | |
8249 | the new SV. The C<classname> argument indicates the package for the | |
8250 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8251 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8252 | |
8253 | =cut | |
8254 | */ | |
8255 | ||
a0d0e21e | 8256 | SV* |
864dbfa3 | 8257 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
8258 | { |
8259 | sv_setiv(newSVrv(rv,classname), iv); | |
8260 | return rv; | |
8261 | } | |
8262 | ||
954c1994 | 8263 | /* |
e1c57cef JH |
8264 | =for apidoc sv_setref_uv |
8265 | ||
8266 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
8267 | argument will be upgraded to an RV. That RV will be modified to point to | |
8268 | the new SV. The C<classname> argument indicates the package for the | |
8269 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8270 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
8271 | |
8272 | =cut | |
8273 | */ | |
8274 | ||
8275 | SV* | |
8276 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
8277 | { | |
8278 | sv_setuv(newSVrv(rv,classname), uv); | |
8279 | return rv; | |
8280 | } | |
8281 | ||
8282 | /* | |
954c1994 GS |
8283 | =for apidoc sv_setref_nv |
8284 | ||
8285 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
8286 | argument will be upgraded to an RV. That RV will be modified to point to | |
8287 | the new SV. The C<classname> argument indicates the package for the | |
8288 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8289 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8290 | |
8291 | =cut | |
8292 | */ | |
8293 | ||
a0d0e21e | 8294 | SV* |
65202027 | 8295 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
8296 | { |
8297 | sv_setnv(newSVrv(rv,classname), nv); | |
8298 | return rv; | |
8299 | } | |
463ee0b2 | 8300 | |
954c1994 GS |
8301 | /* |
8302 | =for apidoc sv_setref_pvn | |
8303 | ||
8304 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
8305 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
8306 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
8307 | argument indicates the package for the blessing. Set C<classname> to | |
7a5fa8a2 | 8308 | C<Nullch> to avoid the blessing. The new SV will have a reference count |
d34c2299 | 8309 | of 1, and the RV will be returned. |
954c1994 GS |
8310 | |
8311 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
8312 | ||
8313 | =cut | |
8314 | */ | |
8315 | ||
a0d0e21e | 8316 | SV* |
1b6737cc | 8317 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, const char *pv, STRLEN n) |
a0d0e21e LW |
8318 | { |
8319 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
8320 | return rv; |
8321 | } | |
8322 | ||
954c1994 GS |
8323 | /* |
8324 | =for apidoc sv_bless | |
8325 | ||
8326 | Blesses an SV into a specified package. The SV must be an RV. The package | |
8327 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
8328 | of the SV is unaffected. | |
8329 | ||
8330 | =cut | |
8331 | */ | |
8332 | ||
a0d0e21e | 8333 | SV* |
864dbfa3 | 8334 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 8335 | { |
76e3520e | 8336 | SV *tmpRef; |
a0d0e21e | 8337 | if (!SvROK(sv)) |
cea2e8a9 | 8338 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
8339 | tmpRef = SvRV(sv); |
8340 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
8341 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 8342 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
8343 | if (SvOBJECT(tmpRef)) { |
8344 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8345 | --PL_sv_objcount; |
76e3520e | 8346 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 8347 | } |
a0d0e21e | 8348 | } |
76e3520e GS |
8349 | SvOBJECT_on(tmpRef); |
8350 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8351 | ++PL_sv_objcount; |
862a34c6 | 8352 | SvUPGRADE(tmpRef, SVt_PVMG); |
b162af07 | 8353 | SvSTASH_set(tmpRef, (HV*)SvREFCNT_inc(stash)); |
a0d0e21e | 8354 | |
2e3febc6 CS |
8355 | if (Gv_AMG(stash)) |
8356 | SvAMAGIC_on(sv); | |
8357 | else | |
8358 | SvAMAGIC_off(sv); | |
a0d0e21e | 8359 | |
1edbfb88 AB |
8360 | if(SvSMAGICAL(tmpRef)) |
8361 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
8362 | mg_set(tmpRef); | |
8363 | ||
8364 | ||
ecdeb87c | 8365 | |
a0d0e21e LW |
8366 | return sv; |
8367 | } | |
8368 | ||
645c22ef | 8369 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
8370 | */ |
8371 | ||
76e3520e | 8372 | STATIC void |
cea2e8a9 | 8373 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 8374 | { |
850fabdf GS |
8375 | void *xpvmg; |
8376 | ||
a0d0e21e LW |
8377 | assert(SvTYPE(sv) == SVt_PVGV); |
8378 | SvFAKE_off(sv); | |
8379 | if (GvGP(sv)) | |
1edc1566 | 8380 | gp_free((GV*)sv); |
e826b3c7 | 8381 | if (GvSTASH(sv)) { |
e15faf7d | 8382 | sv_del_backref((SV*)GvSTASH(sv), sv); |
e826b3c7 GS |
8383 | GvSTASH(sv) = Nullhv; |
8384 | } | |
14befaf4 | 8385 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8386 | Safefree(GvNAME(sv)); |
a5f75d66 | 8387 | GvMULTI_off(sv); |
850fabdf GS |
8388 | |
8389 | /* need to keep SvANY(sv) in the right arena */ | |
8390 | xpvmg = new_XPVMG(); | |
8391 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8392 | del_XPVGV(SvANY(sv)); | |
8393 | SvANY(sv) = xpvmg; | |
8394 | ||
a0d0e21e LW |
8395 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8396 | SvFLAGS(sv) |= SVt_PVMG; | |
8397 | } | |
8398 | ||
954c1994 | 8399 | /* |
840a7b70 | 8400 | =for apidoc sv_unref_flags |
954c1994 GS |
8401 | |
8402 | Unsets the RV status of the SV, and decrements the reference count of | |
8403 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8404 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8405 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8406 | (otherwise the decrementing is conditional on the reference count being | |
8407 | different from one or the reference being a readonly SV). | |
7889fe52 | 8408 | See C<SvROK_off>. |
954c1994 GS |
8409 | |
8410 | =cut | |
8411 | */ | |
8412 | ||
ed6116ce | 8413 | void |
e15faf7d | 8414 | Perl_sv_unref_flags(pTHX_ SV *ref, U32 flags) |
ed6116ce | 8415 | { |
e15faf7d | 8416 | SV* target = SvRV(ref); |
810b8aa5 | 8417 | |
e15faf7d NC |
8418 | if (SvWEAKREF(ref)) { |
8419 | sv_del_backref(target, ref); | |
8420 | SvWEAKREF_off(ref); | |
8421 | SvRV_set(ref, NULL); | |
810b8aa5 GS |
8422 | return; |
8423 | } | |
e15faf7d NC |
8424 | SvRV_set(ref, NULL); |
8425 | SvROK_off(ref); | |
8426 | /* You can't have a || SvREADONLY(target) here, as $a = $$a, where $a was | |
04ca4930 | 8427 | assigned to as BEGIN {$a = \"Foo"} will fail. */ |
e15faf7d NC |
8428 | if (SvREFCNT(target) != 1 || (flags & SV_IMMEDIATE_UNREF)) |
8429 | SvREFCNT_dec(target); | |
840a7b70 | 8430 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
e15faf7d | 8431 | sv_2mortal(target); /* Schedule for freeing later */ |
ed6116ce | 8432 | } |
8990e307 | 8433 | |
840a7b70 IZ |
8434 | /* |
8435 | =for apidoc sv_unref | |
8436 | ||
8437 | Unsets the RV status of the SV, and decrements the reference count of | |
8438 | whatever was being referenced by the RV. This can almost be thought of | |
8439 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
7889fe52 | 8440 | being zero. See C<SvROK_off>. |
840a7b70 IZ |
8441 | |
8442 | =cut | |
8443 | */ | |
8444 | ||
8445 | void | |
8446 | Perl_sv_unref(pTHX_ SV *sv) | |
8447 | { | |
8448 | sv_unref_flags(sv, 0); | |
8449 | } | |
8450 | ||
645c22ef DM |
8451 | /* |
8452 | =for apidoc sv_taint | |
8453 | ||
8454 | Taint an SV. Use C<SvTAINTED_on> instead. | |
8455 | =cut | |
8456 | */ | |
8457 | ||
bbce6d69 | 8458 | void |
864dbfa3 | 8459 | Perl_sv_taint(pTHX_ SV *sv) |
bbce6d69 | 8460 | { |
14befaf4 | 8461 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); |
bbce6d69 | 8462 | } |
8463 | ||
645c22ef DM |
8464 | /* |
8465 | =for apidoc sv_untaint | |
8466 | ||
8467 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8468 | =cut | |
8469 | */ | |
8470 | ||
bbce6d69 | 8471 | void |
864dbfa3 | 8472 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8473 | { |
13f57bf8 | 8474 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8475 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8476 | if (mg) |
565764a8 | 8477 | mg->mg_len &= ~1; |
36477c24 | 8478 | } |
bbce6d69 | 8479 | } |
8480 | ||
645c22ef DM |
8481 | /* |
8482 | =for apidoc sv_tainted | |
8483 | ||
8484 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8485 | =cut | |
8486 | */ | |
8487 | ||
bbce6d69 | 8488 | bool |
864dbfa3 | 8489 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8490 | { |
13f57bf8 | 8491 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
a28509cc | 8492 | MAGIC * const mg = mg_find(sv, PERL_MAGIC_taint); |
2ddb8a4f | 8493 | if (mg && (mg->mg_len & 1) ) |
36477c24 | 8494 | return TRUE; |
8495 | } | |
8496 | return FALSE; | |
bbce6d69 | 8497 | } |
8498 | ||
09540bc3 JH |
8499 | /* |
8500 | =for apidoc sv_setpviv | |
8501 | ||
8502 | Copies an integer into the given SV, also updating its string value. | |
8503 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8504 | ||
8505 | =cut | |
8506 | */ | |
8507 | ||
8508 | void | |
8509 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8510 | { | |
8511 | char buf[TYPE_CHARS(UV)]; | |
8512 | char *ebuf; | |
8513 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8514 | ||
8515 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8516 | } | |
8517 | ||
8518 | /* | |
8519 | =for apidoc sv_setpviv_mg | |
8520 | ||
8521 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8522 | ||
8523 | =cut | |
8524 | */ | |
8525 | ||
8526 | void | |
8527 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8528 | { | |
8529 | char buf[TYPE_CHARS(UV)]; | |
8530 | char *ebuf; | |
8531 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8532 | ||
8533 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8534 | SvSETMAGIC(sv); | |
8535 | } | |
8536 | ||
cea2e8a9 | 8537 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8538 | |
8539 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8540 | * version of the main function, (which may itself be aliased to us). | |
8541 | * Don't access this version directly. | |
8542 | */ | |
8543 | ||
cea2e8a9 GS |
8544 | void |
8545 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8546 | { | |
8547 | dTHX; | |
8548 | va_list args; | |
8549 | va_start(args, pat); | |
c5be433b | 8550 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8551 | va_end(args); |
8552 | } | |
8553 | ||
645c22ef DM |
8554 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8555 | * version of the main function, (which may itself be aliased to us). | |
8556 | * Don't access this version directly. | |
8557 | */ | |
cea2e8a9 GS |
8558 | |
8559 | void | |
8560 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8561 | { | |
8562 | dTHX; | |
8563 | va_list args; | |
8564 | va_start(args, pat); | |
c5be433b | 8565 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8566 | va_end(args); |
cea2e8a9 GS |
8567 | } |
8568 | #endif | |
8569 | ||
954c1994 GS |
8570 | /* |
8571 | =for apidoc sv_setpvf | |
8572 | ||
bffc3d17 SH |
8573 | Works like C<sv_catpvf> but copies the text into the SV instead of |
8574 | appending it. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
954c1994 GS |
8575 | |
8576 | =cut | |
8577 | */ | |
8578 | ||
46fc3d4c | 8579 | void |
864dbfa3 | 8580 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8581 | { |
8582 | va_list args; | |
46fc3d4c | 8583 | va_start(args, pat); |
c5be433b | 8584 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8585 | va_end(args); |
8586 | } | |
8587 | ||
bffc3d17 SH |
8588 | /* |
8589 | =for apidoc sv_vsetpvf | |
8590 | ||
8591 | Works like C<sv_vcatpvf> but copies the text into the SV instead of | |
8592 | appending it. Does not handle 'set' magic. See C<sv_vsetpvf_mg>. | |
8593 | ||
8594 | Usually used via its frontend C<sv_setpvf>. | |
8595 | ||
8596 | =cut | |
8597 | */ | |
645c22ef | 8598 | |
c5be433b GS |
8599 | void |
8600 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8601 | { | |
8602 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8603 | } | |
ef50df4b | 8604 | |
954c1994 GS |
8605 | /* |
8606 | =for apidoc sv_setpvf_mg | |
8607 | ||
8608 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8609 | ||
8610 | =cut | |
8611 | */ | |
8612 | ||
ef50df4b | 8613 | void |
864dbfa3 | 8614 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8615 | { |
8616 | va_list args; | |
ef50df4b | 8617 | va_start(args, pat); |
c5be433b | 8618 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8619 | va_end(args); |
c5be433b GS |
8620 | } |
8621 | ||
bffc3d17 SH |
8622 | /* |
8623 | =for apidoc sv_vsetpvf_mg | |
8624 | ||
8625 | Like C<sv_vsetpvf>, but also handles 'set' magic. | |
8626 | ||
8627 | Usually used via its frontend C<sv_setpvf_mg>. | |
8628 | ||
8629 | =cut | |
8630 | */ | |
645c22ef | 8631 | |
c5be433b GS |
8632 | void |
8633 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8634 | { | |
8635 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8636 | SvSETMAGIC(sv); |
8637 | } | |
8638 | ||
cea2e8a9 | 8639 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8640 | |
8641 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8642 | * version of the main function, (which may itself be aliased to us). | |
8643 | * Don't access this version directly. | |
8644 | */ | |
8645 | ||
cea2e8a9 GS |
8646 | void |
8647 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
8648 | { | |
8649 | dTHX; | |
8650 | va_list args; | |
8651 | va_start(args, pat); | |
c5be433b | 8652 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
8653 | va_end(args); |
8654 | } | |
8655 | ||
645c22ef DM |
8656 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8657 | * version of the main function, (which may itself be aliased to us). | |
8658 | * Don't access this version directly. | |
8659 | */ | |
8660 | ||
cea2e8a9 GS |
8661 | void |
8662 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8663 | { | |
8664 | dTHX; | |
8665 | va_list args; | |
8666 | va_start(args, pat); | |
c5be433b | 8667 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 8668 | va_end(args); |
cea2e8a9 GS |
8669 | } |
8670 | #endif | |
8671 | ||
954c1994 GS |
8672 | /* |
8673 | =for apidoc sv_catpvf | |
8674 | ||
d5ce4a7c GA |
8675 | Processes its arguments like C<sprintf> and appends the formatted |
8676 | output to an SV. If the appended data contains "wide" characters | |
8677 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
8678 | and characters >255 formatted with %c), the original SV might get | |
bffc3d17 | 8679 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. See |
cdd94ca7 NC |
8680 | C<sv_catpvf_mg>. If the original SV was UTF-8, the pattern should be |
8681 | valid UTF-8; if the original SV was bytes, the pattern should be too. | |
954c1994 | 8682 | |
d5ce4a7c | 8683 | =cut */ |
954c1994 | 8684 | |
46fc3d4c | 8685 | void |
864dbfa3 | 8686 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8687 | { |
8688 | va_list args; | |
46fc3d4c | 8689 | va_start(args, pat); |
c5be433b | 8690 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 8691 | va_end(args); |
8692 | } | |
8693 | ||
bffc3d17 SH |
8694 | /* |
8695 | =for apidoc sv_vcatpvf | |
8696 | ||
8697 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8698 | to an SV. Does not handle 'set' magic. See C<sv_vcatpvf_mg>. | |
8699 | ||
8700 | Usually used via its frontend C<sv_catpvf>. | |
8701 | ||
8702 | =cut | |
8703 | */ | |
645c22ef | 8704 | |
ef50df4b | 8705 | void |
c5be433b GS |
8706 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
8707 | { | |
8708 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8709 | } | |
8710 | ||
954c1994 GS |
8711 | /* |
8712 | =for apidoc sv_catpvf_mg | |
8713 | ||
8714 | Like C<sv_catpvf>, but also handles 'set' magic. | |
8715 | ||
8716 | =cut | |
8717 | */ | |
8718 | ||
c5be433b | 8719 | void |
864dbfa3 | 8720 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8721 | { |
8722 | va_list args; | |
ef50df4b | 8723 | va_start(args, pat); |
c5be433b | 8724 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 8725 | va_end(args); |
c5be433b GS |
8726 | } |
8727 | ||
bffc3d17 SH |
8728 | /* |
8729 | =for apidoc sv_vcatpvf_mg | |
8730 | ||
8731 | Like C<sv_vcatpvf>, but also handles 'set' magic. | |
8732 | ||
8733 | Usually used via its frontend C<sv_catpvf_mg>. | |
8734 | ||
8735 | =cut | |
8736 | */ | |
645c22ef | 8737 | |
c5be433b GS |
8738 | void |
8739 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8740 | { | |
8741 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8742 | SvSETMAGIC(sv); |
8743 | } | |
8744 | ||
954c1994 GS |
8745 | /* |
8746 | =for apidoc sv_vsetpvfn | |
8747 | ||
bffc3d17 | 8748 | Works like C<sv_vcatpvfn> but copies the text into the SV instead of |
954c1994 GS |
8749 | appending it. |
8750 | ||
bffc3d17 | 8751 | Usually used via one of its frontends C<sv_vsetpvf> and C<sv_vsetpvf_mg>. |
645c22ef | 8752 | |
954c1994 GS |
8753 | =cut |
8754 | */ | |
8755 | ||
46fc3d4c | 8756 | void |
7d5ea4e7 | 8757 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8758 | { |
8759 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 8760 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 8761 | } |
8762 | ||
645c22ef DM |
8763 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
8764 | ||
2d00ba3b | 8765 | STATIC I32 |
9dd79c3f | 8766 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
8767 | { |
8768 | I32 var = 0; | |
8769 | switch (**pattern) { | |
8770 | case '1': case '2': case '3': | |
8771 | case '4': case '5': case '6': | |
8772 | case '7': case '8': case '9': | |
8773 | while (isDIGIT(**pattern)) | |
8774 | var = var * 10 + (*(*pattern)++ - '0'); | |
8775 | } | |
8776 | return var; | |
8777 | } | |
9dd79c3f | 8778 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 8779 | |
4151a5fe IZ |
8780 | static char * |
8781 | F0convert(NV nv, char *endbuf, STRLEN *len) | |
8782 | { | |
a3b680e6 | 8783 | const int neg = nv < 0; |
4151a5fe | 8784 | UV uv; |
4151a5fe IZ |
8785 | |
8786 | if (neg) | |
8787 | nv = -nv; | |
8788 | if (nv < UV_MAX) { | |
b464bac0 | 8789 | char *p = endbuf; |
4151a5fe | 8790 | nv += 0.5; |
028f8eaa | 8791 | uv = (UV)nv; |
4151a5fe IZ |
8792 | if (uv & 1 && uv == nv) |
8793 | uv--; /* Round to even */ | |
8794 | do { | |
a3b680e6 | 8795 | const unsigned dig = uv % 10; |
4151a5fe IZ |
8796 | *--p = '0' + dig; |
8797 | } while (uv /= 10); | |
8798 | if (neg) | |
8799 | *--p = '-'; | |
8800 | *len = endbuf - p; | |
8801 | return p; | |
8802 | } | |
8803 | return Nullch; | |
8804 | } | |
8805 | ||
8806 | ||
954c1994 GS |
8807 | /* |
8808 | =for apidoc sv_vcatpvfn | |
8809 | ||
8810 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8811 | to an SV. Uses an array of SVs if the C style variable argument list is | |
8812 | missing (NULL). When running with taint checks enabled, indicates via | |
8813 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
8814 | locales). | |
8815 | ||
bffc3d17 | 8816 | Usually used via one of its frontends C<sv_vcatpvf> and C<sv_vcatpvf_mg>. |
645c22ef | 8817 | |
954c1994 GS |
8818 | =cut |
8819 | */ | |
8820 | ||
1ef29b0e RGS |
8821 | /* XXX maybe_tainted is never assigned to, so the doc above is lying. */ |
8822 | ||
46fc3d4c | 8823 | void |
7d5ea4e7 | 8824 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8825 | { |
8826 | char *p; | |
8827 | char *q; | |
a3b680e6 | 8828 | const char *patend; |
fc36a67e | 8829 | STRLEN origlen; |
46fc3d4c | 8830 | I32 svix = 0; |
27da23d5 | 8831 | static const char nullstr[] = "(null)"; |
9c5ffd7c | 8832 | SV *argsv = Nullsv; |
b464bac0 AL |
8833 | bool has_utf8 = DO_UTF8(sv); /* has the result utf8? */ |
8834 | const bool pat_utf8 = has_utf8; /* the pattern is in utf8? */ | |
db79b45b | 8835 | SV *nsv = Nullsv; |
4151a5fe IZ |
8836 | /* Times 4: a decimal digit takes more than 3 binary digits. |
8837 | * NV_DIG: mantissa takes than many decimal digits. | |
8838 | * Plus 32: Playing safe. */ | |
8839 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
8840 | /* large enough for "%#.#f" --chip */ | |
8841 | /* what about long double NVs? --jhi */ | |
db79b45b | 8842 | |
53c1dcc0 AL |
8843 | PERL_UNUSED_ARG(maybe_tainted); |
8844 | ||
46fc3d4c | 8845 | /* no matter what, this is a string now */ |
fc36a67e | 8846 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 8847 | |
0dbb1585 | 8848 | /* special-case "", "%s", and "%-p" (SVf) */ |
46fc3d4c | 8849 | if (patlen == 0) |
8850 | return; | |
0dbb1585 | 8851 | if (patlen == 2 && pat[0] == '%' && pat[1] == 's') { |
c635e13b | 8852 | if (args) { |
53c1dcc0 | 8853 | const char * const s = va_arg(*args, char*); |
c635e13b | 8854 | sv_catpv(sv, s ? s : nullstr); |
8855 | } | |
7e2040f0 | 8856 | else if (svix < svmax) { |
fc36a67e | 8857 | sv_catsv(sv, *svargs); |
7e2040f0 GS |
8858 | if (DO_UTF8(*svargs)) |
8859 | SvUTF8_on(sv); | |
8860 | } | |
fc36a67e | 8861 | return; |
0dbb1585 AL |
8862 | } |
8863 | if (patlen == 3 && pat[0] == '%' && | |
8864 | pat[1] == '-' && pat[2] == 'p') { | |
fc36a67e | 8865 | if (args) { |
7e2040f0 GS |
8866 | argsv = va_arg(*args, SV*); |
8867 | sv_catsv(sv, argsv); | |
8868 | if (DO_UTF8(argsv)) | |
8869 | SvUTF8_on(sv); | |
fc36a67e | 8870 | return; |
8871 | } | |
46fc3d4c | 8872 | } |
8873 | ||
1d917b39 | 8874 | #ifndef USE_LONG_DOUBLE |
4151a5fe | 8875 | /* special-case "%.<number>[gf]" */ |
7af36d83 | 8876 | if ( !args && patlen <= 5 && pat[0] == '%' && pat[1] == '.' |
4151a5fe IZ |
8877 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { |
8878 | unsigned digits = 0; | |
8879 | const char *pp; | |
8880 | ||
8881 | pp = pat + 2; | |
8882 | while (*pp >= '0' && *pp <= '9') | |
8883 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 8884 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
8885 | NV nv; |
8886 | ||
7af36d83 | 8887 | if (svix < svmax) |
4151a5fe IZ |
8888 | nv = SvNV(*svargs); |
8889 | else | |
8890 | return; | |
8891 | if (*pp == 'g') { | |
2873255c NC |
8892 | /* Add check for digits != 0 because it seems that some |
8893 | gconverts are buggy in this case, and we don't yet have | |
8894 | a Configure test for this. */ | |
8895 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
8896 | /* 0, point, slack */ | |
2e59c212 | 8897 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
8898 | sv_catpv(sv, ebuf); |
8899 | if (*ebuf) /* May return an empty string for digits==0 */ | |
8900 | return; | |
8901 | } | |
8902 | } else if (!digits) { | |
8903 | STRLEN l; | |
8904 | ||
8905 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
8906 | sv_catpvn(sv, p, l); | |
8907 | return; | |
8908 | } | |
8909 | } | |
8910 | } | |
8911 | } | |
1d917b39 | 8912 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 8913 | |
2cf2cfc6 | 8914 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 8915 | has_utf8 = TRUE; |
2cf2cfc6 | 8916 | |
46fc3d4c | 8917 | patend = (char*)pat + patlen; |
8918 | for (p = (char*)pat; p < patend; p = q) { | |
8919 | bool alt = FALSE; | |
8920 | bool left = FALSE; | |
b22c7a20 | 8921 | bool vectorize = FALSE; |
211dfcf1 | 8922 | bool vectorarg = FALSE; |
2cf2cfc6 | 8923 | bool vec_utf8 = FALSE; |
46fc3d4c | 8924 | char fill = ' '; |
8925 | char plus = 0; | |
8926 | char intsize = 0; | |
8927 | STRLEN width = 0; | |
fc36a67e | 8928 | STRLEN zeros = 0; |
46fc3d4c | 8929 | bool has_precis = FALSE; |
8930 | STRLEN precis = 0; | |
58e33a90 | 8931 | I32 osvix = svix; |
2cf2cfc6 | 8932 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
8933 | #ifdef HAS_LDBL_SPRINTF_BUG |
8934 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 8935 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
8936 | bool fix_ldbl_sprintf_bug = FALSE; |
8937 | #endif | |
205f51d8 | 8938 | |
46fc3d4c | 8939 | char esignbuf[4]; |
89ebb4a3 | 8940 | U8 utf8buf[UTF8_MAXBYTES+1]; |
46fc3d4c | 8941 | STRLEN esignlen = 0; |
8942 | ||
4d84ee25 | 8943 | const char *eptr = Nullch; |
fc36a67e | 8944 | STRLEN elen = 0; |
81f715da | 8945 | SV *vecsv = Nullsv; |
245d4a47 | 8946 | const U8 *vecstr = Null(U8*); |
b22c7a20 | 8947 | STRLEN veclen = 0; |
934abaf1 | 8948 | char c = 0; |
46fc3d4c | 8949 | int i; |
9c5ffd7c | 8950 | unsigned base = 0; |
8c8eb53c RB |
8951 | IV iv = 0; |
8952 | UV uv = 0; | |
9e5b023a JH |
8953 | /* we need a long double target in case HAS_LONG_DOUBLE but |
8954 | not USE_LONG_DOUBLE | |
8955 | */ | |
35fff930 | 8956 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
8957 | long double nv; |
8958 | #else | |
65202027 | 8959 | NV nv; |
9e5b023a | 8960 | #endif |
46fc3d4c | 8961 | STRLEN have; |
8962 | STRLEN need; | |
8963 | STRLEN gap; | |
7af36d83 | 8964 | const char *dotstr = "."; |
b22c7a20 | 8965 | STRLEN dotstrlen = 1; |
211dfcf1 | 8966 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 8967 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
8968 | I32 epix = 0; /* explicit precision index */ |
8969 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 8970 | bool asterisk = FALSE; |
46fc3d4c | 8971 | |
211dfcf1 | 8972 | /* echo everything up to the next format specification */ |
46fc3d4c | 8973 | for (q = p; q < patend && *q != '%'; ++q) ; |
8974 | if (q > p) { | |
db79b45b JH |
8975 | if (has_utf8 && !pat_utf8) |
8976 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
8977 | else | |
8978 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 8979 | p = q; |
8980 | } | |
8981 | if (q++ >= patend) | |
8982 | break; | |
8983 | ||
211dfcf1 HS |
8984 | /* |
8985 | We allow format specification elements in this order: | |
8986 | \d+\$ explicit format parameter index | |
8987 | [-+ 0#]+ flags | |
a472f209 | 8988 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 8989 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
8990 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
8991 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
8992 | [hlqLV] size | |
8993 | [%bcdefginopsux_DFOUX] format (mandatory) | |
8994 | */ | |
8995 | if (EXPECT_NUMBER(q, width)) { | |
8996 | if (*q == '$') { | |
8997 | ++q; | |
8998 | efix = width; | |
8999 | } else { | |
9000 | goto gotwidth; | |
9001 | } | |
9002 | } | |
9003 | ||
fc36a67e | 9004 | /* FLAGS */ |
9005 | ||
46fc3d4c | 9006 | while (*q) { |
9007 | switch (*q) { | |
9008 | case ' ': | |
9009 | case '+': | |
9010 | plus = *q++; | |
9011 | continue; | |
9012 | ||
9013 | case '-': | |
9014 | left = TRUE; | |
9015 | q++; | |
9016 | continue; | |
9017 | ||
9018 | case '0': | |
9019 | fill = *q++; | |
9020 | continue; | |
9021 | ||
9022 | case '#': | |
9023 | alt = TRUE; | |
9024 | q++; | |
9025 | continue; | |
9026 | ||
fc36a67e | 9027 | default: |
9028 | break; | |
9029 | } | |
9030 | break; | |
9031 | } | |
46fc3d4c | 9032 | |
211dfcf1 | 9033 | tryasterisk: |
eb3fce90 | 9034 | if (*q == '*') { |
211dfcf1 HS |
9035 | q++; |
9036 | if (EXPECT_NUMBER(q, ewix)) | |
9037 | if (*q++ != '$') | |
9038 | goto unknown; | |
eb3fce90 | 9039 | asterisk = TRUE; |
211dfcf1 HS |
9040 | } |
9041 | if (*q == 'v') { | |
eb3fce90 | 9042 | q++; |
211dfcf1 HS |
9043 | if (vectorize) |
9044 | goto unknown; | |
9cbac4c7 | 9045 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
9046 | evix = ewix; |
9047 | ewix = 0; | |
9048 | asterisk = FALSE; | |
9049 | } | |
9050 | vectorize = TRUE; | |
9051 | goto tryasterisk; | |
eb3fce90 JH |
9052 | } |
9053 | ||
211dfcf1 | 9054 | if (!asterisk) |
7a5fa8a2 | 9055 | if( *q == '0' ) |
f3583277 | 9056 | fill = *q++; |
211dfcf1 HS |
9057 | EXPECT_NUMBER(q, width); |
9058 | ||
9059 | if (vectorize) { | |
9060 | if (vectorarg) { | |
9061 | if (args) | |
9062 | vecsv = va_arg(*args, SV*); | |
9063 | else | |
9064 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
3a7a539e | 9065 | svargs[evix ? evix-1 : svix++] : &PL_sv_undef; |
245d4a47 | 9066 | dotstr = SvPV_const(vecsv, dotstrlen); |
211dfcf1 | 9067 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 9068 | is_utf8 = TRUE; |
211dfcf1 HS |
9069 | } |
9070 | if (args) { | |
9071 | vecsv = va_arg(*args, SV*); | |
245d4a47 | 9072 | vecstr = (U8*)SvPV_const(vecsv,veclen); |
2cf2cfc6 | 9073 | vec_utf8 = DO_UTF8(vecsv); |
eb3fce90 | 9074 | } |
211dfcf1 HS |
9075 | else if (efix ? efix <= svmax : svix < svmax) { |
9076 | vecsv = svargs[efix ? efix-1 : svix++]; | |
245d4a47 | 9077 | vecstr = (U8*)SvPV_const(vecsv,veclen); |
2cf2cfc6 | 9078 | vec_utf8 = DO_UTF8(vecsv); |
d7aa5382 | 9079 | /* if this is a version object, we need to return the |
3f7c398e | 9080 | * stringified representation (which the SvPVX_const has |
d7aa5382 JP |
9081 | * already done for us), but not vectorize the args |
9082 | */ | |
9083 | if ( *q == 'd' && sv_derived_from(vecsv,"version") ) | |
9084 | { | |
9085 | q++; /* skip past the rest of the %vd format */ | |
245d4a47 | 9086 | eptr = (const char *) vecstr; |
d7aa5382 JP |
9087 | elen = strlen(eptr); |
9088 | vectorize=FALSE; | |
9089 | goto string; | |
9090 | } | |
211dfcf1 HS |
9091 | } |
9092 | else { | |
9093 | vecstr = (U8*)""; | |
9094 | veclen = 0; | |
9095 | } | |
eb3fce90 | 9096 | } |
fc36a67e | 9097 | |
eb3fce90 | 9098 | if (asterisk) { |
fc36a67e | 9099 | if (args) |
9100 | i = va_arg(*args, int); | |
9101 | else | |
eb3fce90 JH |
9102 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
9103 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9104 | left |= (i < 0); |
9105 | width = (i < 0) ? -i : i; | |
fc36a67e | 9106 | } |
211dfcf1 | 9107 | gotwidth: |
fc36a67e | 9108 | |
9109 | /* PRECISION */ | |
46fc3d4c | 9110 | |
fc36a67e | 9111 | if (*q == '.') { |
9112 | q++; | |
9113 | if (*q == '*') { | |
211dfcf1 | 9114 | q++; |
7b8dd722 HS |
9115 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
9116 | goto unknown; | |
9117 | /* XXX: todo, support specified precision parameter */ | |
9118 | if (epix) | |
211dfcf1 | 9119 | goto unknown; |
46fc3d4c | 9120 | if (args) |
9121 | i = va_arg(*args, int); | |
9122 | else | |
eb3fce90 JH |
9123 | i = (ewix ? ewix <= svmax : svix < svmax) |
9124 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9125 | precis = (i < 0) ? 0 : i; |
fc36a67e | 9126 | } |
9127 | else { | |
9128 | precis = 0; | |
9129 | while (isDIGIT(*q)) | |
9130 | precis = precis * 10 + (*q++ - '0'); | |
9131 | } | |
9132 | has_precis = TRUE; | |
9133 | } | |
46fc3d4c | 9134 | |
fc36a67e | 9135 | /* SIZE */ |
46fc3d4c | 9136 | |
fc36a67e | 9137 | switch (*q) { |
c623ac67 GS |
9138 | #ifdef WIN32 |
9139 | case 'I': /* Ix, I32x, and I64x */ | |
9140 | # ifdef WIN64 | |
9141 | if (q[1] == '6' && q[2] == '4') { | |
9142 | q += 3; | |
9143 | intsize = 'q'; | |
9144 | break; | |
9145 | } | |
9146 | # endif | |
9147 | if (q[1] == '3' && q[2] == '2') { | |
9148 | q += 3; | |
9149 | break; | |
9150 | } | |
9151 | # ifdef WIN64 | |
9152 | intsize = 'q'; | |
9153 | # endif | |
9154 | q++; | |
9155 | break; | |
9156 | #endif | |
9e5b023a | 9157 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 9158 | case 'L': /* Ld */ |
e5c81feb | 9159 | /* FALL THROUGH */ |
e5c81feb | 9160 | #ifdef HAS_QUAD |
6f9bb7fd | 9161 | case 'q': /* qd */ |
9e5b023a | 9162 | #endif |
6f9bb7fd GS |
9163 | intsize = 'q'; |
9164 | q++; | |
9165 | break; | |
9166 | #endif | |
fc36a67e | 9167 | case 'l': |
9e5b023a | 9168 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 9169 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 9170 | intsize = 'q'; |
9171 | q += 2; | |
46fc3d4c | 9172 | break; |
cf2093f6 | 9173 | } |
fc36a67e | 9174 | #endif |
6f9bb7fd | 9175 | /* FALL THROUGH */ |
fc36a67e | 9176 | case 'h': |
cf2093f6 | 9177 | /* FALL THROUGH */ |
fc36a67e | 9178 | case 'V': |
9179 | intsize = *q++; | |
46fc3d4c | 9180 | break; |
9181 | } | |
9182 | ||
fc36a67e | 9183 | /* CONVERSION */ |
9184 | ||
211dfcf1 HS |
9185 | if (*q == '%') { |
9186 | eptr = q++; | |
9187 | elen = 1; | |
9188 | goto string; | |
9189 | } | |
9190 | ||
be75b157 HS |
9191 | if (vectorize) |
9192 | argsv = vecsv; | |
9193 | else if (!args) | |
211dfcf1 HS |
9194 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
9195 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
9196 | ||
46fc3d4c | 9197 | switch (c = *q++) { |
9198 | ||
9199 | /* STRINGS */ | |
9200 | ||
46fc3d4c | 9201 | case 'c': |
be75b157 | 9202 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
9203 | if ((uv > 255 || |
9204 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 9205 | && !IN_BYTES) { |
dfe13c55 | 9206 | eptr = (char*)utf8buf; |
9041c2e3 | 9207 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 9208 | is_utf8 = TRUE; |
7e2040f0 GS |
9209 | } |
9210 | else { | |
9211 | c = (char)uv; | |
9212 | eptr = &c; | |
9213 | elen = 1; | |
a0ed51b3 | 9214 | } |
46fc3d4c | 9215 | goto string; |
9216 | ||
46fc3d4c | 9217 | case 's': |
be75b157 | 9218 | if (args && !vectorize) { |
fc36a67e | 9219 | eptr = va_arg(*args, char*); |
c635e13b | 9220 | if (eptr) |
1d7c1841 GS |
9221 | #ifdef MACOS_TRADITIONAL |
9222 | /* On MacOS, %#s format is used for Pascal strings */ | |
9223 | if (alt) | |
9224 | elen = *eptr++; | |
9225 | else | |
9226 | #endif | |
c635e13b | 9227 | elen = strlen(eptr); |
9228 | else { | |
27da23d5 | 9229 | eptr = (char *)nullstr; |
c635e13b | 9230 | elen = sizeof nullstr - 1; |
9231 | } | |
46fc3d4c | 9232 | } |
211dfcf1 | 9233 | else { |
4d84ee25 | 9234 | eptr = SvPVx_const(argsv, elen); |
7e2040f0 | 9235 | if (DO_UTF8(argsv)) { |
a0ed51b3 LW |
9236 | if (has_precis && precis < elen) { |
9237 | I32 p = precis; | |
7e2040f0 | 9238 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
9239 | precis = p; |
9240 | } | |
9241 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 9242 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 9243 | } |
2cf2cfc6 | 9244 | is_utf8 = TRUE; |
a0ed51b3 LW |
9245 | } |
9246 | } | |
fc36a67e | 9247 | |
46fc3d4c | 9248 | string: |
b22c7a20 | 9249 | vectorize = FALSE; |
46fc3d4c | 9250 | if (has_precis && elen > precis) |
9251 | elen = precis; | |
9252 | break; | |
9253 | ||
9254 | /* INTEGERS */ | |
9255 | ||
fc36a67e | 9256 | case 'p': |
0dbb1585 | 9257 | if (left && args) { /* SVf */ |
5df617be | 9258 | left = FALSE; |
0dbb1585 AL |
9259 | if (width) { |
9260 | precis = width; | |
9261 | has_precis = TRUE; | |
9262 | width = 0; | |
9263 | } | |
9264 | if (vectorize) | |
9265 | goto unknown; | |
9266 | argsv = va_arg(*args, SV*); | |
4d84ee25 | 9267 | eptr = SvPVx_const(argsv, elen); |
0dbb1585 AL |
9268 | if (DO_UTF8(argsv)) |
9269 | is_utf8 = TRUE; | |
9270 | goto string; | |
5df617be | 9271 | } |
be75b157 | 9272 | if (alt || vectorize) |
c2e66d9e | 9273 | goto unknown; |
211dfcf1 | 9274 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 9275 | base = 16; |
9276 | goto integer; | |
9277 | ||
46fc3d4c | 9278 | case 'D': |
29fe7a80 | 9279 | #ifdef IV_IS_QUAD |
22f3ae8c | 9280 | intsize = 'q'; |
29fe7a80 | 9281 | #else |
46fc3d4c | 9282 | intsize = 'l'; |
29fe7a80 | 9283 | #endif |
46fc3d4c | 9284 | /* FALL THROUGH */ |
9285 | case 'd': | |
9286 | case 'i': | |
b22c7a20 | 9287 | if (vectorize) { |
ba210ebe | 9288 | STRLEN ulen; |
211dfcf1 HS |
9289 | if (!veclen) |
9290 | continue; | |
2cf2cfc6 A |
9291 | if (vec_utf8) |
9292 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9293 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9294 | else { |
e83d50c9 | 9295 | uv = *vecstr; |
b22c7a20 GS |
9296 | ulen = 1; |
9297 | } | |
9298 | vecstr += ulen; | |
9299 | veclen -= ulen; | |
e83d50c9 JP |
9300 | if (plus) |
9301 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
9302 | } |
9303 | else if (args) { | |
46fc3d4c | 9304 | switch (intsize) { |
9305 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 9306 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 9307 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 9308 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
9309 | #ifdef HAS_QUAD |
9310 | case 'q': iv = va_arg(*args, Quad_t); break; | |
9311 | #endif | |
46fc3d4c | 9312 | } |
9313 | } | |
9314 | else { | |
b10c0dba | 9315 | IV tiv = SvIVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9316 | switch (intsize) { |
b10c0dba MHM |
9317 | case 'h': iv = (short)tiv; break; |
9318 | case 'l': iv = (long)tiv; break; | |
9319 | case 'V': | |
9320 | default: iv = tiv; break; | |
cf2093f6 | 9321 | #ifdef HAS_QUAD |
b10c0dba | 9322 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 9323 | #endif |
46fc3d4c | 9324 | } |
9325 | } | |
e83d50c9 JP |
9326 | if ( !vectorize ) /* we already set uv above */ |
9327 | { | |
9328 | if (iv >= 0) { | |
9329 | uv = iv; | |
9330 | if (plus) | |
9331 | esignbuf[esignlen++] = plus; | |
9332 | } | |
9333 | else { | |
9334 | uv = -iv; | |
9335 | esignbuf[esignlen++] = '-'; | |
9336 | } | |
46fc3d4c | 9337 | } |
9338 | base = 10; | |
9339 | goto integer; | |
9340 | ||
fc36a67e | 9341 | case 'U': |
29fe7a80 | 9342 | #ifdef IV_IS_QUAD |
22f3ae8c | 9343 | intsize = 'q'; |
29fe7a80 | 9344 | #else |
fc36a67e | 9345 | intsize = 'l'; |
29fe7a80 | 9346 | #endif |
fc36a67e | 9347 | /* FALL THROUGH */ |
9348 | case 'u': | |
9349 | base = 10; | |
9350 | goto uns_integer; | |
9351 | ||
4f19785b WSI |
9352 | case 'b': |
9353 | base = 2; | |
9354 | goto uns_integer; | |
9355 | ||
46fc3d4c | 9356 | case 'O': |
29fe7a80 | 9357 | #ifdef IV_IS_QUAD |
22f3ae8c | 9358 | intsize = 'q'; |
29fe7a80 | 9359 | #else |
46fc3d4c | 9360 | intsize = 'l'; |
29fe7a80 | 9361 | #endif |
46fc3d4c | 9362 | /* FALL THROUGH */ |
9363 | case 'o': | |
9364 | base = 8; | |
9365 | goto uns_integer; | |
9366 | ||
9367 | case 'X': | |
46fc3d4c | 9368 | case 'x': |
9369 | base = 16; | |
46fc3d4c | 9370 | |
9371 | uns_integer: | |
b22c7a20 | 9372 | if (vectorize) { |
ba210ebe | 9373 | STRLEN ulen; |
b22c7a20 | 9374 | vector: |
211dfcf1 HS |
9375 | if (!veclen) |
9376 | continue; | |
2cf2cfc6 A |
9377 | if (vec_utf8) |
9378 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9379 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9380 | else { |
a05b299f | 9381 | uv = *vecstr; |
b22c7a20 GS |
9382 | ulen = 1; |
9383 | } | |
9384 | vecstr += ulen; | |
9385 | veclen -= ulen; | |
9386 | } | |
9387 | else if (args) { | |
46fc3d4c | 9388 | switch (intsize) { |
9389 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 9390 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 9391 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 9392 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 9393 | #ifdef HAS_QUAD |
9e3321a5 | 9394 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 9395 | #endif |
46fc3d4c | 9396 | } |
9397 | } | |
9398 | else { | |
b10c0dba | 9399 | UV tuv = SvUVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9400 | switch (intsize) { |
b10c0dba MHM |
9401 | case 'h': uv = (unsigned short)tuv; break; |
9402 | case 'l': uv = (unsigned long)tuv; break; | |
9403 | case 'V': | |
9404 | default: uv = tuv; break; | |
cf2093f6 | 9405 | #ifdef HAS_QUAD |
b10c0dba | 9406 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 9407 | #endif |
46fc3d4c | 9408 | } |
9409 | } | |
9410 | ||
9411 | integer: | |
4d84ee25 NC |
9412 | { |
9413 | char *ptr = ebuf + sizeof ebuf; | |
9414 | switch (base) { | |
9415 | unsigned dig; | |
9416 | case 16: | |
9417 | if (!uv) | |
9418 | alt = FALSE; | |
9419 | p = (char*)((c == 'X') | |
9420 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
9421 | do { | |
9422 | dig = uv & 15; | |
9423 | *--ptr = p[dig]; | |
9424 | } while (uv >>= 4); | |
9425 | if (alt) { | |
9426 | esignbuf[esignlen++] = '0'; | |
9427 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ | |
9428 | } | |
9429 | break; | |
9430 | case 8: | |
9431 | do { | |
9432 | dig = uv & 7; | |
9433 | *--ptr = '0' + dig; | |
9434 | } while (uv >>= 3); | |
9435 | if (alt && *ptr != '0') | |
9436 | *--ptr = '0'; | |
9437 | break; | |
9438 | case 2: | |
9439 | do { | |
9440 | dig = uv & 1; | |
9441 | *--ptr = '0' + dig; | |
9442 | } while (uv >>= 1); | |
9443 | if (alt) { | |
9444 | esignbuf[esignlen++] = '0'; | |
9445 | esignbuf[esignlen++] = 'b'; | |
9446 | } | |
9447 | break; | |
9448 | default: /* it had better be ten or less */ | |
9449 | do { | |
9450 | dig = uv % base; | |
9451 | *--ptr = '0' + dig; | |
9452 | } while (uv /= base); | |
9453 | break; | |
46fc3d4c | 9454 | } |
4d84ee25 NC |
9455 | elen = (ebuf + sizeof ebuf) - ptr; |
9456 | eptr = ptr; | |
9457 | if (has_precis) { | |
9458 | if (precis > elen) | |
9459 | zeros = precis - elen; | |
9460 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9461 | elen = 0; | |
eda88b6d | 9462 | } |
c10ed8b9 | 9463 | } |
46fc3d4c | 9464 | break; |
9465 | ||
9466 | /* FLOATING POINT */ | |
9467 | ||
fc36a67e | 9468 | case 'F': |
9469 | c = 'f'; /* maybe %F isn't supported here */ | |
9470 | /* FALL THROUGH */ | |
46fc3d4c | 9471 | case 'e': case 'E': |
fc36a67e | 9472 | case 'f': |
46fc3d4c | 9473 | case 'g': case 'G': |
9474 | ||
9475 | /* This is evil, but floating point is even more evil */ | |
9476 | ||
9e5b023a JH |
9477 | /* for SV-style calling, we can only get NV |
9478 | for C-style calling, we assume %f is double; | |
9479 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9480 | */ | |
9481 | switch (intsize) { | |
9482 | case 'V': | |
9483 | #if defined(USE_LONG_DOUBLE) | |
9484 | intsize = 'q'; | |
9485 | #endif | |
9486 | break; | |
8a2e3f14 | 9487 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9488 | case 'l': |
9489 | /* FALL THROUGH */ | |
9e5b023a JH |
9490 | default: |
9491 | #if defined(USE_LONG_DOUBLE) | |
9492 | intsize = args ? 0 : 'q'; | |
9493 | #endif | |
9494 | break; | |
9495 | case 'q': | |
9496 | #if defined(HAS_LONG_DOUBLE) | |
9497 | break; | |
9498 | #else | |
9499 | /* FALL THROUGH */ | |
9500 | #endif | |
9501 | case 'h': | |
9e5b023a JH |
9502 | goto unknown; |
9503 | } | |
9504 | ||
9505 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9506 | nv = (args && !vectorize) ? |
35fff930 JH |
9507 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9508 | intsize == 'q' ? | |
205f51d8 AS |
9509 | va_arg(*args, long double) : |
9510 | va_arg(*args, double) | |
35fff930 | 9511 | #else |
205f51d8 | 9512 | va_arg(*args, double) |
35fff930 | 9513 | #endif |
9e5b023a | 9514 | : SvNVx(argsv); |
fc36a67e | 9515 | |
9516 | need = 0; | |
be75b157 | 9517 | vectorize = FALSE; |
fc36a67e | 9518 | if (c != 'e' && c != 'E') { |
9519 | i = PERL_INT_MIN; | |
9e5b023a JH |
9520 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9521 | will cast our (long double) to (double) */ | |
73b309ea | 9522 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9523 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9524 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9525 | if (i > 0) |
fc36a67e | 9526 | need = BIT_DIGITS(i); |
9527 | } | |
9528 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9529 | |
fc36a67e | 9530 | if (need < width) |
9531 | need = width; | |
9532 | ||
20f6aaab AS |
9533 | #ifdef HAS_LDBL_SPRINTF_BUG |
9534 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9535 | with sfio - Allen <allens@cpan.org> */ |
9536 | ||
9537 | # ifdef DBL_MAX | |
9538 | # define MY_DBL_MAX DBL_MAX | |
9539 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9540 | # if DOUBLESIZE >= 8 | |
9541 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9542 | # else | |
9543 | # define MY_DBL_MAX 3.40282347E+38L | |
9544 | # endif | |
9545 | # endif | |
9546 | ||
9547 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9548 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9549 | # else |
205f51d8 | 9550 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9551 | # endif |
20f6aaab | 9552 | |
205f51d8 AS |
9553 | # ifdef DBL_MIN |
9554 | # define MY_DBL_MIN DBL_MIN | |
9555 | # else /* XXX guessing! -Allen */ | |
9556 | # if DOUBLESIZE >= 8 | |
9557 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9558 | # else | |
9559 | # define MY_DBL_MIN 1.17549435E-38L | |
9560 | # endif | |
9561 | # endif | |
20f6aaab | 9562 | |
205f51d8 AS |
9563 | if ((intsize == 'q') && (c == 'f') && |
9564 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9565 | (need < DBL_DIG)) { | |
9566 | /* it's going to be short enough that | |
9567 | * long double precision is not needed */ | |
9568 | ||
9569 | if ((nv <= 0L) && (nv >= -0L)) | |
9570 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9571 | else { | |
9572 | /* would use Perl_fp_class as a double-check but not | |
9573 | * functional on IRIX - see perl.h comments */ | |
9574 | ||
9575 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9576 | /* It's within the range that a double can represent */ | |
9577 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9578 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9579 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9580 | #endif |
205f51d8 | 9581 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9582 | } |
205f51d8 AS |
9583 | } |
9584 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9585 | double temp; | |
9586 | ||
9587 | intsize = 0; | |
9588 | temp = (double)nv; | |
9589 | nv = (NV)temp; | |
9590 | } | |
20f6aaab | 9591 | } |
205f51d8 AS |
9592 | |
9593 | # undef MY_DBL_MAX | |
9594 | # undef MY_DBL_MAX_BUG | |
9595 | # undef MY_DBL_MIN | |
9596 | ||
20f6aaab AS |
9597 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9598 | ||
46fc3d4c | 9599 | need += 20; /* fudge factor */ |
80252599 GS |
9600 | if (PL_efloatsize < need) { |
9601 | Safefree(PL_efloatbuf); | |
9602 | PL_efloatsize = need + 20; /* more fudge */ | |
9603 | New(906, PL_efloatbuf, PL_efloatsize, char); | |
7d5ea4e7 | 9604 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9605 | } |
9606 | ||
4151a5fe IZ |
9607 | if ( !(width || left || plus || alt) && fill != '0' |
9608 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
9609 | /* See earlier comment about buggy Gconvert when digits, |
9610 | aka precis is 0 */ | |
9611 | if ( c == 'g' && precis) { | |
2e59c212 | 9612 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4151a5fe IZ |
9613 | if (*PL_efloatbuf) /* May return an empty string for digits==0 */ |
9614 | goto float_converted; | |
9615 | } else if ( c == 'f' && !precis) { | |
9616 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
9617 | break; | |
9618 | } | |
9619 | } | |
4d84ee25 NC |
9620 | { |
9621 | char *ptr = ebuf + sizeof ebuf; | |
9622 | *--ptr = '\0'; | |
9623 | *--ptr = c; | |
9624 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ | |
9e5b023a | 9625 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) |
4d84ee25 NC |
9626 | if (intsize == 'q') { |
9627 | /* Copy the one or more characters in a long double | |
9628 | * format before the 'base' ([efgEFG]) character to | |
9629 | * the format string. */ | |
9630 | static char const prifldbl[] = PERL_PRIfldbl; | |
9631 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9632 | while (p >= prifldbl) { *--ptr = *p--; } | |
9633 | } | |
65202027 | 9634 | #endif |
4d84ee25 NC |
9635 | if (has_precis) { |
9636 | base = precis; | |
9637 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
9638 | *--ptr = '.'; | |
9639 | } | |
9640 | if (width) { | |
9641 | base = width; | |
9642 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
9643 | } | |
9644 | if (fill == '0') | |
9645 | *--ptr = fill; | |
9646 | if (left) | |
9647 | *--ptr = '-'; | |
9648 | if (plus) | |
9649 | *--ptr = plus; | |
9650 | if (alt) | |
9651 | *--ptr = '#'; | |
9652 | *--ptr = '%'; | |
9653 | ||
9654 | /* No taint. Otherwise we are in the strange situation | |
9655 | * where printf() taints but print($float) doesn't. | |
9656 | * --jhi */ | |
9e5b023a | 9657 | #if defined(HAS_LONG_DOUBLE) |
4d84ee25 NC |
9658 | if (intsize == 'q') |
9659 | (void)sprintf(PL_efloatbuf, ptr, nv); | |
9660 | else | |
9661 | (void)sprintf(PL_efloatbuf, ptr, (double)nv); | |
9e5b023a | 9662 | #else |
4d84ee25 | 9663 | (void)sprintf(PL_efloatbuf, ptr, nv); |
9e5b023a | 9664 | #endif |
4d84ee25 | 9665 | } |
4151a5fe | 9666 | float_converted: |
80252599 GS |
9667 | eptr = PL_efloatbuf; |
9668 | elen = strlen(PL_efloatbuf); | |
46fc3d4c | 9669 | break; |
9670 | ||
fc36a67e | 9671 | /* SPECIAL */ |
9672 | ||
9673 | case 'n': | |
9674 | i = SvCUR(sv) - origlen; | |
be75b157 | 9675 | if (args && !vectorize) { |
c635e13b | 9676 | switch (intsize) { |
9677 | case 'h': *(va_arg(*args, short*)) = i; break; | |
9678 | default: *(va_arg(*args, int*)) = i; break; | |
9679 | case 'l': *(va_arg(*args, long*)) = i; break; | |
9680 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
9681 | #ifdef HAS_QUAD |
9682 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
9683 | #endif | |
c635e13b | 9684 | } |
fc36a67e | 9685 | } |
9dd79c3f | 9686 | else |
211dfcf1 | 9687 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 9688 | vectorize = FALSE; |
fc36a67e | 9689 | continue; /* not "break" */ |
9690 | ||
9691 | /* UNKNOWN */ | |
9692 | ||
46fc3d4c | 9693 | default: |
fc36a67e | 9694 | unknown: |
599cee73 | 9695 | if (!args && ckWARN(WARN_PRINTF) && |
533c011a | 9696 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) { |
c635e13b | 9697 | SV *msg = sv_newmortal(); |
35c1215d NC |
9698 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
9699 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 9700 | if (c) { |
0f4b6630 | 9701 | if (isPRINT(c)) |
1c846c1f | 9702 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
9703 | "\"%%%c\"", c & 0xFF); |
9704 | else | |
9705 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 9706 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 9707 | (UV)c & 0xFF); |
0f4b6630 | 9708 | } else |
c635e13b | 9709 | sv_catpv(msg, "end of string"); |
9014280d | 9710 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 9711 | } |
fb73857a | 9712 | |
9713 | /* output mangled stuff ... */ | |
9714 | if (c == '\0') | |
9715 | --q; | |
46fc3d4c | 9716 | eptr = p; |
9717 | elen = q - p; | |
fb73857a | 9718 | |
9719 | /* ... right here, because formatting flags should not apply */ | |
9720 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9721 | p = SvEND(sv); | |
4459522c | 9722 | Copy(eptr, p, elen, char); |
fb73857a | 9723 | p += elen; |
9724 | *p = '\0'; | |
3f7c398e | 9725 | SvCUR_set(sv, p - SvPVX_const(sv)); |
58e33a90 | 9726 | svix = osvix; |
fb73857a | 9727 | continue; /* not "break" */ |
46fc3d4c | 9728 | } |
9729 | ||
6c94ec8b HS |
9730 | /* calculate width before utf8_upgrade changes it */ |
9731 | have = esignlen + zeros + elen; | |
9732 | ||
d2876be5 JH |
9733 | if (is_utf8 != has_utf8) { |
9734 | if (is_utf8) { | |
9735 | if (SvCUR(sv)) | |
9736 | sv_utf8_upgrade(sv); | |
9737 | } | |
9738 | else { | |
53c1dcc0 | 9739 | SV * const nsv = sv_2mortal(newSVpvn(eptr, elen)); |
d2876be5 | 9740 | sv_utf8_upgrade(nsv); |
93524f2b | 9741 | eptr = SvPVX_const(nsv); |
d2876be5 JH |
9742 | elen = SvCUR(nsv); |
9743 | } | |
9744 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9745 | p = SvEND(sv); | |
9746 | *p = '\0'; | |
9747 | } | |
6af65485 | 9748 | |
46fc3d4c | 9749 | need = (have > width ? have : width); |
9750 | gap = need - have; | |
9751 | ||
b22c7a20 | 9752 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 9753 | p = SvEND(sv); |
9754 | if (esignlen && fill == '0') { | |
53c1dcc0 | 9755 | int i; |
eb160463 | 9756 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9757 | *p++ = esignbuf[i]; |
9758 | } | |
9759 | if (gap && !left) { | |
9760 | memset(p, fill, gap); | |
9761 | p += gap; | |
9762 | } | |
9763 | if (esignlen && fill != '0') { | |
53c1dcc0 | 9764 | int i; |
eb160463 | 9765 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9766 | *p++ = esignbuf[i]; |
9767 | } | |
fc36a67e | 9768 | if (zeros) { |
53c1dcc0 | 9769 | int i; |
fc36a67e | 9770 | for (i = zeros; i; i--) |
9771 | *p++ = '0'; | |
9772 | } | |
46fc3d4c | 9773 | if (elen) { |
4459522c | 9774 | Copy(eptr, p, elen, char); |
46fc3d4c | 9775 | p += elen; |
9776 | } | |
9777 | if (gap && left) { | |
9778 | memset(p, ' ', gap); | |
9779 | p += gap; | |
9780 | } | |
b22c7a20 GS |
9781 | if (vectorize) { |
9782 | if (veclen) { | |
4459522c | 9783 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
9784 | p += dotstrlen; |
9785 | } | |
9786 | else | |
9787 | vectorize = FALSE; /* done iterating over vecstr */ | |
9788 | } | |
2cf2cfc6 A |
9789 | if (is_utf8) |
9790 | has_utf8 = TRUE; | |
9791 | if (has_utf8) | |
7e2040f0 | 9792 | SvUTF8_on(sv); |
46fc3d4c | 9793 | *p = '\0'; |
3f7c398e | 9794 | SvCUR_set(sv, p - SvPVX_const(sv)); |
b22c7a20 GS |
9795 | if (vectorize) { |
9796 | esignlen = 0; | |
9797 | goto vector; | |
9798 | } | |
46fc3d4c | 9799 | } |
9800 | } | |
51371543 | 9801 | |
645c22ef DM |
9802 | /* ========================================================================= |
9803 | ||
9804 | =head1 Cloning an interpreter | |
9805 | ||
9806 | All the macros and functions in this section are for the private use of | |
9807 | the main function, perl_clone(). | |
9808 | ||
9809 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
9810 | During the course of a cloning, a hash table is used to map old addresses | |
9811 | to new addresses. The table is created and manipulated with the | |
9812 | ptr_table_* functions. | |
9813 | ||
9814 | =cut | |
9815 | ||
9816 | ============================================================================*/ | |
9817 | ||
9818 | ||
1d7c1841 GS |
9819 | #if defined(USE_ITHREADS) |
9820 | ||
1d7c1841 GS |
9821 | #ifndef GpREFCNT_inc |
9822 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
9823 | #endif | |
9824 | ||
9825 | ||
d2d73c3e AB |
9826 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
9827 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
9828 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9829 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
9830 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9831 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
9832 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9833 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
9834 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9835 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
9836 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
9837 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
9838 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 9839 | |
d2d73c3e | 9840 | |
d2f185dc AMS |
9841 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
9842 | regcomp.c. AMS 20010712 */ | |
645c22ef | 9843 | |
1d7c1841 | 9844 | REGEXP * |
53c1dcc0 | 9845 | Perl_re_dup(pTHX_ const REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 9846 | { |
27da23d5 | 9847 | dVAR; |
d2f185dc AMS |
9848 | REGEXP *ret; |
9849 | int i, len, npar; | |
9850 | struct reg_substr_datum *s; | |
9851 | ||
9852 | if (!r) | |
9853 | return (REGEXP *)NULL; | |
9854 | ||
9855 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
9856 | return ret; | |
9857 | ||
9858 | len = r->offsets[0]; | |
9859 | npar = r->nparens+1; | |
9860 | ||
9861 | Newc(0, ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); | |
9862 | Copy(r->program, ret->program, len+1, regnode); | |
9863 | ||
9864 | New(0, ret->startp, npar, I32); | |
9865 | Copy(r->startp, ret->startp, npar, I32); | |
9866 | New(0, ret->endp, npar, I32); | |
9867 | Copy(r->startp, ret->startp, npar, I32); | |
9868 | ||
d2f185dc AMS |
9869 | New(0, ret->substrs, 1, struct reg_substr_data); |
9870 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { | |
9871 | s->min_offset = r->substrs->data[i].min_offset; | |
9872 | s->max_offset = r->substrs->data[i].max_offset; | |
9873 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 9874 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
9875 | } |
9876 | ||
70612e96 | 9877 | ret->regstclass = NULL; |
d2f185dc AMS |
9878 | if (r->data) { |
9879 | struct reg_data *d; | |
e1ec3a88 | 9880 | const int count = r->data->count; |
53c1dcc0 | 9881 | int i; |
d2f185dc AMS |
9882 | |
9883 | Newc(0, d, sizeof(struct reg_data) + count*sizeof(void *), | |
9884 | char, struct reg_data); | |
9885 | New(0, d->what, count, U8); | |
9886 | ||
9887 | d->count = count; | |
9888 | for (i = 0; i < count; i++) { | |
9889 | d->what[i] = r->data->what[i]; | |
9890 | switch (d->what[i]) { | |
a3621e74 YO |
9891 | /* legal options are one of: sfpont |
9892 | see also regcomp.h and pregfree() */ | |
d2f185dc AMS |
9893 | case 's': |
9894 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
9895 | break; | |
9896 | case 'p': | |
9897 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
9898 | break; | |
9899 | case 'f': | |
9900 | /* This is cheating. */ | |
9901 | New(0, d->data[i], 1, struct regnode_charclass_class); | |
9902 | StructCopy(r->data->data[i], d->data[i], | |
9903 | struct regnode_charclass_class); | |
70612e96 | 9904 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
9905 | break; |
9906 | case 'o': | |
33773810 AMS |
9907 | /* Compiled op trees are readonly, and can thus be |
9908 | shared without duplication. */ | |
b34c0dd4 | 9909 | OP_REFCNT_LOCK; |
9b978d73 | 9910 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
b34c0dd4 | 9911 | OP_REFCNT_UNLOCK; |
9b978d73 | 9912 | break; |
d2f185dc AMS |
9913 | case 'n': |
9914 | d->data[i] = r->data->data[i]; | |
9915 | break; | |
a3621e74 YO |
9916 | case 't': |
9917 | d->data[i] = r->data->data[i]; | |
9918 | OP_REFCNT_LOCK; | |
9919 | ((reg_trie_data*)d->data[i])->refcount++; | |
9920 | OP_REFCNT_UNLOCK; | |
9921 | break; | |
9922 | default: | |
9923 | Perl_croak(aTHX_ "panic: re_dup unknown data code '%c'", r->data->what[i]); | |
d2f185dc AMS |
9924 | } |
9925 | } | |
9926 | ||
9927 | ret->data = d; | |
9928 | } | |
9929 | else | |
9930 | ret->data = NULL; | |
9931 | ||
9932 | New(0, ret->offsets, 2*len+1, U32); | |
9933 | Copy(r->offsets, ret->offsets, 2*len+1, U32); | |
9934 | ||
e01c5899 | 9935 | ret->precomp = SAVEPVN(r->precomp, r->prelen); |
d2f185dc AMS |
9936 | ret->refcnt = r->refcnt; |
9937 | ret->minlen = r->minlen; | |
9938 | ret->prelen = r->prelen; | |
9939 | ret->nparens = r->nparens; | |
9940 | ret->lastparen = r->lastparen; | |
9941 | ret->lastcloseparen = r->lastcloseparen; | |
9942 | ret->reganch = r->reganch; | |
9943 | ||
70612e96 RG |
9944 | ret->sublen = r->sublen; |
9945 | ||
9946 | if (RX_MATCH_COPIED(ret)) | |
e01c5899 | 9947 | ret->subbeg = SAVEPVN(r->subbeg, r->sublen); |
70612e96 RG |
9948 | else |
9949 | ret->subbeg = Nullch; | |
f8c7b90f | 9950 | #ifdef PERL_OLD_COPY_ON_WRITE |
9a26048b NC |
9951 | ret->saved_copy = Nullsv; |
9952 | #endif | |
70612e96 | 9953 | |
d2f185dc AMS |
9954 | ptr_table_store(PL_ptr_table, r, ret); |
9955 | return ret; | |
1d7c1841 GS |
9956 | } |
9957 | ||
d2d73c3e | 9958 | /* duplicate a file handle */ |
645c22ef | 9959 | |
1d7c1841 | 9960 | PerlIO * |
a8fc9800 | 9961 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
9962 | { |
9963 | PerlIO *ret; | |
53c1dcc0 AL |
9964 | |
9965 | PERL_UNUSED_ARG(type); | |
73d840c0 | 9966 | |
1d7c1841 GS |
9967 | if (!fp) |
9968 | return (PerlIO*)NULL; | |
9969 | ||
9970 | /* look for it in the table first */ | |
9971 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
9972 | if (ret) | |
9973 | return ret; | |
9974 | ||
9975 | /* create anew and remember what it is */ | |
ecdeb87c | 9976 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
9977 | ptr_table_store(PL_ptr_table, fp, ret); |
9978 | return ret; | |
9979 | } | |
9980 | ||
645c22ef DM |
9981 | /* duplicate a directory handle */ |
9982 | ||
1d7c1841 GS |
9983 | DIR * |
9984 | Perl_dirp_dup(pTHX_ DIR *dp) | |
9985 | { | |
9986 | if (!dp) | |
9987 | return (DIR*)NULL; | |
9988 | /* XXX TODO */ | |
9989 | return dp; | |
9990 | } | |
9991 | ||
ff276b08 | 9992 | /* duplicate a typeglob */ |
645c22ef | 9993 | |
1d7c1841 | 9994 | GP * |
a8fc9800 | 9995 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
9996 | { |
9997 | GP *ret; | |
9998 | if (!gp) | |
9999 | return (GP*)NULL; | |
10000 | /* look for it in the table first */ | |
10001 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
10002 | if (ret) | |
10003 | return ret; | |
10004 | ||
10005 | /* create anew and remember what it is */ | |
10006 | Newz(0, ret, 1, GP); | |
10007 | ptr_table_store(PL_ptr_table, gp, ret); | |
10008 | ||
10009 | /* clone */ | |
10010 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
10011 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
10012 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
10013 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
10014 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
10015 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
10016 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
10017 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 | 10018 | ret->gp_cvgen = gp->gp_cvgen; |
1d7c1841 GS |
10019 | ret->gp_line = gp->gp_line; |
10020 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
10021 | return ret; | |
10022 | } | |
10023 | ||
645c22ef DM |
10024 | /* duplicate a chain of magic */ |
10025 | ||
1d7c1841 | 10026 | MAGIC * |
a8fc9800 | 10027 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 10028 | { |
cb359b41 JH |
10029 | MAGIC *mgprev = (MAGIC*)NULL; |
10030 | MAGIC *mgret; | |
1d7c1841 GS |
10031 | if (!mg) |
10032 | return (MAGIC*)NULL; | |
10033 | /* look for it in the table first */ | |
10034 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
10035 | if (mgret) | |
10036 | return mgret; | |
10037 | ||
10038 | for (; mg; mg = mg->mg_moremagic) { | |
10039 | MAGIC *nmg; | |
10040 | Newz(0, nmg, 1, MAGIC); | |
cb359b41 | 10041 | if (mgprev) |
1d7c1841 | 10042 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
10043 | else |
10044 | mgret = nmg; | |
1d7c1841 GS |
10045 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
10046 | nmg->mg_private = mg->mg_private; | |
10047 | nmg->mg_type = mg->mg_type; | |
10048 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 10049 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 10050 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 10051 | } |
05bd4103 | 10052 | else if(mg->mg_type == PERL_MAGIC_backref) { |
7fc63493 | 10053 | const AV * const av = (AV*) mg->mg_obj; |
fdc9a813 AE |
10054 | SV **svp; |
10055 | I32 i; | |
7fc63493 | 10056 | (void)SvREFCNT_inc(nmg->mg_obj = (SV*)newAV()); |
fdc9a813 AE |
10057 | svp = AvARRAY(av); |
10058 | for (i = AvFILLp(av); i >= 0; i--) { | |
3a81978b | 10059 | if (!svp[i]) continue; |
fdc9a813 AE |
10060 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); |
10061 | } | |
05bd4103 | 10062 | } |
8d2f4536 NC |
10063 | else if (mg->mg_type == PERL_MAGIC_symtab) { |
10064 | nmg->mg_obj = mg->mg_obj; | |
10065 | } | |
1d7c1841 GS |
10066 | else { |
10067 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
10068 | ? sv_dup_inc(mg->mg_obj, param) |
10069 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
10070 | } |
10071 | nmg->mg_len = mg->mg_len; | |
10072 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 10073 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 10074 | if (mg->mg_len > 0) { |
1d7c1841 | 10075 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
10076 | if (mg->mg_type == PERL_MAGIC_overload_table && |
10077 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
10078 | { | |
1d7c1841 GS |
10079 | AMT *amtp = (AMT*)mg->mg_ptr; |
10080 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
10081 | I32 i; | |
10082 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 10083 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
10084 | } |
10085 | } | |
10086 | } | |
10087 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 10088 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 10089 | } |
68795e93 NIS |
10090 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
10091 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
10092 | } | |
1d7c1841 GS |
10093 | mgprev = nmg; |
10094 | } | |
10095 | return mgret; | |
10096 | } | |
10097 | ||
645c22ef DM |
10098 | /* create a new pointer-mapping table */ |
10099 | ||
1d7c1841 GS |
10100 | PTR_TBL_t * |
10101 | Perl_ptr_table_new(pTHX) | |
10102 | { | |
10103 | PTR_TBL_t *tbl; | |
10104 | Newz(0, tbl, 1, PTR_TBL_t); | |
10105 | tbl->tbl_max = 511; | |
10106 | tbl->tbl_items = 0; | |
10107 | Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); | |
10108 | return tbl; | |
10109 | } | |
10110 | ||
134ca3d6 DM |
10111 | #if (PTRSIZE == 8) |
10112 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 3) | |
10113 | #else | |
10114 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 2) | |
10115 | #endif | |
10116 | ||
437a6bf1 | 10117 | #define new_pte() new_body(struct ptr_tbl_ent, pte) |
cb4415b8 | 10118 | #define del_pte(p) del_body_type(p, struct ptr_tbl_ent, pte) |
32e691d0 | 10119 | |
645c22ef DM |
10120 | /* map an existing pointer using a table */ |
10121 | ||
1d7c1841 | 10122 | void * |
53c1dcc0 | 10123 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, const void *sv) |
1d7c1841 GS |
10124 | { |
10125 | PTR_TBL_ENT_t *tblent; | |
4373e329 | 10126 | const UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
10127 | assert(tbl); |
10128 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
10129 | for (; tblent; tblent = tblent->next) { | |
10130 | if (tblent->oldval == sv) | |
10131 | return tblent->newval; | |
10132 | } | |
10133 | return (void*)NULL; | |
10134 | } | |
10135 | ||
645c22ef DM |
10136 | /* add a new entry to a pointer-mapping table */ |
10137 | ||
1d7c1841 | 10138 | void |
53c1dcc0 | 10139 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, const void *oldv, void *newv) |
1d7c1841 GS |
10140 | { |
10141 | PTR_TBL_ENT_t *tblent, **otblent; | |
10142 | /* XXX this may be pessimal on platforms where pointers aren't good | |
10143 | * hash values e.g. if they grow faster in the most significant | |
10144 | * bits */ | |
4373e329 | 10145 | const UV hash = PTR_TABLE_HASH(oldv); |
14cade97 | 10146 | bool empty = 1; |
1d7c1841 GS |
10147 | |
10148 | assert(tbl); | |
10149 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
14cade97 | 10150 | for (tblent = *otblent; tblent; empty=0, tblent = tblent->next) { |
1d7c1841 GS |
10151 | if (tblent->oldval == oldv) { |
10152 | tblent->newval = newv; | |
1d7c1841 GS |
10153 | return; |
10154 | } | |
10155 | } | |
437a6bf1 | 10156 | tblent = new_pte(); |
1d7c1841 GS |
10157 | tblent->oldval = oldv; |
10158 | tblent->newval = newv; | |
10159 | tblent->next = *otblent; | |
10160 | *otblent = tblent; | |
10161 | tbl->tbl_items++; | |
14cade97 | 10162 | if (!empty && tbl->tbl_items > tbl->tbl_max) |
1d7c1841 GS |
10163 | ptr_table_split(tbl); |
10164 | } | |
10165 | ||
645c22ef DM |
10166 | /* double the hash bucket size of an existing ptr table */ |
10167 | ||
1d7c1841 GS |
10168 | void |
10169 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
10170 | { | |
10171 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
4373e329 | 10172 | const UV oldsize = tbl->tbl_max + 1; |
1d7c1841 GS |
10173 | UV newsize = oldsize * 2; |
10174 | UV i; | |
10175 | ||
10176 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
10177 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
10178 | tbl->tbl_max = --newsize; | |
10179 | tbl->tbl_ary = ary; | |
10180 | for (i=0; i < oldsize; i++, ary++) { | |
10181 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
10182 | if (!*ary) | |
10183 | continue; | |
10184 | curentp = ary + oldsize; | |
10185 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 10186 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
10187 | *entp = ent->next; |
10188 | ent->next = *curentp; | |
10189 | *curentp = ent; | |
10190 | continue; | |
10191 | } | |
10192 | else | |
10193 | entp = &ent->next; | |
10194 | } | |
10195 | } | |
10196 | } | |
10197 | ||
645c22ef DM |
10198 | /* remove all the entries from a ptr table */ |
10199 | ||
a0739874 DM |
10200 | void |
10201 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
10202 | { | |
10203 | register PTR_TBL_ENT_t **array; | |
10204 | register PTR_TBL_ENT_t *entry; | |
a0739874 DM |
10205 | UV riter = 0; |
10206 | UV max; | |
10207 | ||
10208 | if (!tbl || !tbl->tbl_items) { | |
10209 | return; | |
10210 | } | |
10211 | ||
10212 | array = tbl->tbl_ary; | |
10213 | entry = array[0]; | |
10214 | max = tbl->tbl_max; | |
10215 | ||
10216 | for (;;) { | |
10217 | if (entry) { | |
4373e329 | 10218 | PTR_TBL_ENT_t *oentry = entry; |
a0739874 | 10219 | entry = entry->next; |
437a6bf1 | 10220 | del_pte(oentry); |
a0739874 DM |
10221 | } |
10222 | if (!entry) { | |
10223 | if (++riter > max) { | |
10224 | break; | |
10225 | } | |
10226 | entry = array[riter]; | |
10227 | } | |
10228 | } | |
10229 | ||
10230 | tbl->tbl_items = 0; | |
10231 | } | |
10232 | ||
645c22ef DM |
10233 | /* clear and free a ptr table */ |
10234 | ||
a0739874 DM |
10235 | void |
10236 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
10237 | { | |
10238 | if (!tbl) { | |
10239 | return; | |
10240 | } | |
10241 | ptr_table_clear(tbl); | |
10242 | Safefree(tbl->tbl_ary); | |
10243 | Safefree(tbl); | |
10244 | } | |
10245 | ||
5bd07a3d | 10246 | |
83841fad NIS |
10247 | void |
10248 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
10249 | { | |
10250 | if (SvROK(sstr)) { | |
b162af07 SP |
10251 | SvRV_set(dstr, SvWEAKREF(sstr) |
10252 | ? sv_dup(SvRV(sstr), param) | |
10253 | : sv_dup_inc(SvRV(sstr), param)); | |
f880fe2f | 10254 | |
83841fad | 10255 | } |
3f7c398e | 10256 | else if (SvPVX_const(sstr)) { |
83841fad NIS |
10257 | /* Has something there */ |
10258 | if (SvLEN(sstr)) { | |
68795e93 | 10259 | /* Normal PV - clone whole allocated space */ |
3f7c398e | 10260 | SvPV_set(dstr, SAVEPVN(SvPVX_const(sstr), SvLEN(sstr)-1)); |
d3d0e6f1 NC |
10261 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
10262 | /* Not that normal - actually sstr is copy on write. | |
10263 | But we are a true, independant SV, so: */ | |
10264 | SvREADONLY_off(dstr); | |
10265 | SvFAKE_off(dstr); | |
10266 | } | |
68795e93 | 10267 | } |
83841fad NIS |
10268 | else { |
10269 | /* Special case - not normally malloced for some reason */ | |
ef10be65 NC |
10270 | if ((SvREADONLY(sstr) && SvFAKE(sstr))) { |
10271 | /* A "shared" PV - clone it as "shared" PV */ | |
10272 | SvPV_set(dstr, | |
10273 | HEK_KEY(hek_dup(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)), | |
10274 | param))); | |
83841fad NIS |
10275 | } |
10276 | else { | |
10277 | /* Some other special case - random pointer */ | |
f880fe2f | 10278 | SvPV_set(dstr, SvPVX(sstr)); |
d3d0e6f1 | 10279 | } |
83841fad NIS |
10280 | } |
10281 | } | |
10282 | else { | |
10283 | /* Copy the Null */ | |
f880fe2f | 10284 | if (SvTYPE(dstr) == SVt_RV) |
b162af07 | 10285 | SvRV_set(dstr, NULL); |
f880fe2f SP |
10286 | else |
10287 | SvPV_set(dstr, 0); | |
83841fad NIS |
10288 | } |
10289 | } | |
10290 | ||
662fb8b2 NC |
10291 | /* duplicate an SV of any type (including AV, HV etc) */ |
10292 | ||
1d7c1841 | 10293 | SV * |
a8fc9800 | 10294 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 10295 | { |
27da23d5 | 10296 | dVAR; |
1d7c1841 GS |
10297 | SV *dstr; |
10298 | ||
10299 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
10300 | return Nullsv; | |
10301 | /* look for it in the table first */ | |
10302 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
10303 | if (dstr) | |
10304 | return dstr; | |
10305 | ||
0405e91e AB |
10306 | if(param->flags & CLONEf_JOIN_IN) { |
10307 | /** We are joining here so we don't want do clone | |
10308 | something that is bad **/ | |
bfcb3514 | 10309 | const char *hvname; |
0405e91e AB |
10310 | |
10311 | if(SvTYPE(sstr) == SVt_PVHV && | |
bfcb3514 | 10312 | (hvname = HvNAME_get(sstr))) { |
0405e91e | 10313 | /** don't clone stashes if they already exist **/ |
bfcb3514 | 10314 | HV* old_stash = gv_stashpv(hvname,0); |
0405e91e AB |
10315 | return (SV*) old_stash; |
10316 | } | |
10317 | } | |
10318 | ||
1d7c1841 GS |
10319 | /* create anew and remember what it is */ |
10320 | new_SV(dstr); | |
fd0854ff DM |
10321 | |
10322 | #ifdef DEBUG_LEAKING_SCALARS | |
10323 | dstr->sv_debug_optype = sstr->sv_debug_optype; | |
10324 | dstr->sv_debug_line = sstr->sv_debug_line; | |
10325 | dstr->sv_debug_inpad = sstr->sv_debug_inpad; | |
10326 | dstr->sv_debug_cloned = 1; | |
10327 | # ifdef NETWARE | |
10328 | dstr->sv_debug_file = savepv(sstr->sv_debug_file); | |
10329 | # else | |
10330 | dstr->sv_debug_file = savesharedpv(sstr->sv_debug_file); | |
10331 | # endif | |
10332 | #endif | |
10333 | ||
1d7c1841 GS |
10334 | ptr_table_store(PL_ptr_table, sstr, dstr); |
10335 | ||
10336 | /* clone */ | |
10337 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
10338 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
10339 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
10340 | ||
10341 | #ifdef DEBUGGING | |
3f7c398e | 10342 | if (SvANY(sstr) && PL_watch_pvx && SvPVX_const(sstr) == PL_watch_pvx) |
1d7c1841 | 10343 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", |
3f7c398e | 10344 | PL_watch_pvx, SvPVX_const(sstr)); |
1d7c1841 GS |
10345 | #endif |
10346 | ||
9660f481 DM |
10347 | /* don't clone objects whose class has asked us not to */ |
10348 | if (SvOBJECT(sstr) && ! (SvFLAGS(SvSTASH(sstr)) & SVphv_CLONEABLE)) { | |
10349 | SvFLAGS(dstr) &= ~SVTYPEMASK; | |
10350 | SvOBJECT_off(dstr); | |
10351 | return dstr; | |
10352 | } | |
10353 | ||
1d7c1841 GS |
10354 | switch (SvTYPE(sstr)) { |
10355 | case SVt_NULL: | |
10356 | SvANY(dstr) = NULL; | |
10357 | break; | |
10358 | case SVt_IV: | |
339049b0 | 10359 | SvANY(dstr) = (XPVIV*)((char*)&(dstr->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
45977657 | 10360 | SvIV_set(dstr, SvIVX(sstr)); |
1d7c1841 GS |
10361 | break; |
10362 | case SVt_NV: | |
10363 | SvANY(dstr) = new_XNV(); | |
9d6ce603 | 10364 | SvNV_set(dstr, SvNVX(sstr)); |
1d7c1841 GS |
10365 | break; |
10366 | case SVt_RV: | |
339049b0 | 10367 | SvANY(dstr) = &(dstr->sv_u.svu_rv); |
83841fad | 10368 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 | 10369 | break; |
662fb8b2 NC |
10370 | default: |
10371 | { | |
10372 | /* These are all the types that need complex bodies allocating. */ | |
10373 | size_t new_body_length; | |
10374 | size_t new_body_offset = 0; | |
10375 | void **new_body_arena; | |
10376 | void **new_body_arenaroot; | |
10377 | void *new_body; | |
10378 | ||
10379 | switch (SvTYPE(sstr)) { | |
10380 | default: | |
10381 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", | |
10382 | (IV)SvTYPE(sstr)); | |
10383 | break; | |
10384 | ||
10385 | case SVt_PVIO: | |
10386 | new_body = new_XPVIO(); | |
10387 | new_body_length = sizeof(XPVIO); | |
10388 | break; | |
10389 | case SVt_PVFM: | |
10390 | new_body = new_XPVFM(); | |
10391 | new_body_length = sizeof(XPVFM); | |
10392 | break; | |
10393 | ||
10394 | case SVt_PVHV: | |
10395 | new_body_arena = (void **) &PL_xpvhv_root; | |
10396 | new_body_arenaroot = (void **) &PL_xpvhv_arenaroot; | |
10397 | new_body_offset = STRUCT_OFFSET(XPVHV, xhv_fill) | |
10398 | - STRUCT_OFFSET(xpvhv_allocated, xhv_fill); | |
10399 | new_body_length = STRUCT_OFFSET(XPVHV, xmg_stash) | |
10400 | + sizeof (((XPVHV*)SvANY(sstr))->xmg_stash) | |
10401 | - new_body_offset; | |
10402 | goto new_body; | |
10403 | case SVt_PVAV: | |
10404 | new_body_arena = (void **) &PL_xpvav_root; | |
10405 | new_body_arenaroot = (void **) &PL_xpvav_arenaroot; | |
10406 | new_body_offset = STRUCT_OFFSET(XPVAV, xav_fill) | |
10407 | - STRUCT_OFFSET(xpvav_allocated, xav_fill); | |
10408 | new_body_length = STRUCT_OFFSET(XPVHV, xmg_stash) | |
10409 | + sizeof (((XPVHV*)SvANY(sstr))->xmg_stash) | |
10410 | - new_body_offset; | |
10411 | goto new_body; | |
10412 | case SVt_PVBM: | |
10413 | new_body_length = sizeof(XPVBM); | |
10414 | new_body_arena = (void **) &PL_xpvbm_root; | |
10415 | new_body_arenaroot = (void **) &PL_xpvbm_arenaroot; | |
10416 | goto new_body; | |
10417 | case SVt_PVGV: | |
10418 | if (GvUNIQUE((GV*)sstr)) { | |
0abe3f7c | 10419 | /* Do sharing here. */ |
662fb8b2 NC |
10420 | } |
10421 | new_body_length = sizeof(XPVGV); | |
10422 | new_body_arena = (void **) &PL_xpvgv_root; | |
10423 | new_body_arenaroot = (void **) &PL_xpvgv_arenaroot; | |
10424 | goto new_body; | |
10425 | case SVt_PVCV: | |
10426 | new_body_length = sizeof(XPVCV); | |
10427 | new_body_arena = (void **) &PL_xpvcv_root; | |
10428 | new_body_arenaroot = (void **) &PL_xpvcv_arenaroot; | |
10429 | goto new_body; | |
10430 | case SVt_PVLV: | |
10431 | new_body_length = sizeof(XPVLV); | |
10432 | new_body_arena = (void **) &PL_xpvlv_root; | |
10433 | new_body_arenaroot = (void **) &PL_xpvlv_arenaroot; | |
10434 | goto new_body; | |
10435 | case SVt_PVMG: | |
10436 | new_body_length = sizeof(XPVMG); | |
10437 | new_body_arena = (void **) &PL_xpvmg_root; | |
10438 | new_body_arenaroot = (void **) &PL_xpvmg_arenaroot; | |
10439 | goto new_body; | |
10440 | case SVt_PVNV: | |
10441 | new_body_length = sizeof(XPVNV); | |
10442 | new_body_arena = (void **) &PL_xpvnv_root; | |
10443 | new_body_arenaroot = (void **) &PL_xpvnv_arenaroot; | |
10444 | goto new_body; | |
10445 | case SVt_PVIV: | |
10446 | new_body_offset = STRUCT_OFFSET(XPVIV, xpv_cur) | |
10447 | - STRUCT_OFFSET(xpviv_allocated, xpv_cur); | |
10448 | new_body_length = sizeof(XPVIV) - new_body_offset; | |
10449 | new_body_arena = (void **) &PL_xpviv_root; | |
10450 | new_body_arenaroot = (void **) &PL_xpviv_arenaroot; | |
10451 | goto new_body; | |
10452 | case SVt_PV: | |
10453 | new_body_offset = STRUCT_OFFSET(XPV, xpv_cur) | |
10454 | - STRUCT_OFFSET(xpv_allocated, xpv_cur); | |
10455 | new_body_length = sizeof(XPV) - new_body_offset; | |
10456 | new_body_arena = (void **) &PL_xpv_root; | |
10457 | new_body_arenaroot = (void **) &PL_xpv_arenaroot; | |
10458 | new_body: | |
10459 | assert(new_body_length); | |
10460 | #ifndef PURIFY | |
dd690478 NC |
10461 | new_body = (void*)((char*)S_new_body(aTHX_ new_body_arenaroot, |
10462 | new_body_arena, | |
10463 | new_body_length) | |
10464 | - new_body_offset); | |
662fb8b2 NC |
10465 | #else |
10466 | /* We always allocated the full length item with PURIFY */ | |
10467 | new_body_length += new_body_offset; | |
10468 | new_body_offset = 0; | |
10469 | new_body = my_safemalloc(new_body_length); | |
5bd07a3d | 10470 | #endif |
1d7c1841 | 10471 | } |
662fb8b2 NC |
10472 | assert(new_body); |
10473 | SvANY(dstr) = new_body; | |
10474 | ||
10475 | Copy(((char*)SvANY(sstr)) + new_body_offset, | |
10476 | ((char*)SvANY(dstr)) + new_body_offset, | |
10477 | new_body_length, char); | |
10478 | ||
10479 | if (SvTYPE(sstr) != SVt_PVAV && SvTYPE(sstr) != SVt_PVHV) | |
10480 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); | |
10481 | ||
10482 | /* The Copy above means that all the source (unduplicated) pointers | |
10483 | are now in the destination. We can check the flags and the | |
10484 | pointers in either, but it's possible that there's less cache | |
10485 | missing by always going for the destination. | |
10486 | FIXME - instrument and check that assumption */ | |
10487 | if (SvTYPE(sstr) >= SVt_PVMG) { | |
10488 | if (SvMAGIC(dstr)) | |
10489 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(dstr), param)); | |
10490 | if (SvSTASH(dstr)) | |
10491 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(dstr), param)); | |
1d7c1841 | 10492 | } |
662fb8b2 NC |
10493 | |
10494 | switch (SvTYPE(sstr)) { | |
10495 | case SVt_PV: | |
10496 | break; | |
10497 | case SVt_PVIV: | |
10498 | break; | |
10499 | case SVt_PVNV: | |
10500 | break; | |
10501 | case SVt_PVMG: | |
10502 | break; | |
10503 | case SVt_PVBM: | |
10504 | break; | |
10505 | case SVt_PVLV: | |
10506 | /* XXX LvTARGOFF sometimes holds PMOP* when DEBUGGING */ | |
10507 | if (LvTYPE(dstr) == 't') /* for tie: unrefcnted fake (SV**) */ | |
10508 | LvTARG(dstr) = dstr; | |
10509 | else if (LvTYPE(dstr) == 'T') /* for tie: fake HE */ | |
10510 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(dstr), 0, param); | |
10511 | else | |
10512 | LvTARG(dstr) = sv_dup_inc(LvTARG(dstr), param); | |
10513 | break; | |
10514 | case SVt_PVGV: | |
10515 | GvNAME(dstr) = SAVEPVN(GvNAME(dstr), GvNAMELEN(dstr)); | |
e15faf7d NC |
10516 | GvSTASH(dstr) = hv_dup(GvSTASH(dstr), param); |
10517 | /* Don't call sv_add_backref here as it's going to be created | |
10518 | as part of the magic cloning of the symbol table. */ | |
662fb8b2 NC |
10519 | GvGP(dstr) = gp_dup(GvGP(dstr), param); |
10520 | (void)GpREFCNT_inc(GvGP(dstr)); | |
10521 | break; | |
10522 | case SVt_PVIO: | |
10523 | IoIFP(dstr) = fp_dup(IoIFP(dstr), IoTYPE(dstr), param); | |
10524 | if (IoOFP(dstr) == IoIFP(sstr)) | |
10525 | IoOFP(dstr) = IoIFP(dstr); | |
10526 | else | |
10527 | IoOFP(dstr) = fp_dup(IoOFP(dstr), IoTYPE(dstr), param); | |
10528 | /* PL_rsfp_filters entries have fake IoDIRP() */ | |
10529 | if (IoDIRP(dstr) && !(IoFLAGS(dstr) & IOf_FAKE_DIRP)) | |
10530 | IoDIRP(dstr) = dirp_dup(IoDIRP(dstr)); | |
10531 | if(IoFLAGS(dstr) & IOf_FAKE_DIRP) { | |
10532 | /* I have no idea why fake dirp (rsfps) | |
10533 | should be treated differently but otherwise | |
10534 | we end up with leaks -- sky*/ | |
10535 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(dstr), param); | |
10536 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(dstr), param); | |
10537 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(dstr), param); | |
10538 | } else { | |
10539 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(dstr), param); | |
10540 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(dstr), param); | |
10541 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(dstr), param); | |
10542 | } | |
10543 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(dstr)); | |
10544 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(dstr)); | |
10545 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(dstr)); | |
10546 | break; | |
10547 | case SVt_PVAV: | |
10548 | if (AvARRAY((AV*)sstr)) { | |
10549 | SV **dst_ary, **src_ary; | |
10550 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10551 | ||
10552 | src_ary = AvARRAY((AV*)sstr); | |
10553 | Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*); | |
10554 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); | |
10555 | SvPV_set(dstr, (char*)dst_ary); | |
10556 | AvALLOC((AV*)dstr) = dst_ary; | |
10557 | if (AvREAL((AV*)sstr)) { | |
10558 | while (items-- > 0) | |
10559 | *dst_ary++ = sv_dup_inc(*src_ary++, param); | |
10560 | } | |
10561 | else { | |
10562 | while (items-- > 0) | |
10563 | *dst_ary++ = sv_dup(*src_ary++, param); | |
10564 | } | |
10565 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10566 | while (items-- > 0) { | |
10567 | *dst_ary++ = &PL_sv_undef; | |
10568 | } | |
bfcb3514 | 10569 | } |
662fb8b2 NC |
10570 | else { |
10571 | SvPV_set(dstr, Nullch); | |
10572 | AvALLOC((AV*)dstr) = (SV**)NULL; | |
b79f7545 | 10573 | } |
662fb8b2 NC |
10574 | break; |
10575 | case SVt_PVHV: | |
10576 | { | |
10577 | HEK *hvname = 0; | |
10578 | ||
10579 | if (HvARRAY((HV*)sstr)) { | |
10580 | STRLEN i = 0; | |
10581 | const bool sharekeys = !!HvSHAREKEYS(sstr); | |
10582 | XPVHV * const dxhv = (XPVHV*)SvANY(dstr); | |
10583 | XPVHV * const sxhv = (XPVHV*)SvANY(sstr); | |
10584 | char *darray; | |
10585 | New(0, darray, | |
10586 | PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1) | |
10587 | + (SvOOK(sstr) ? sizeof(struct xpvhv_aux) : 0), | |
10588 | char); | |
10589 | HvARRAY(dstr) = (HE**)darray; | |
10590 | while (i <= sxhv->xhv_max) { | |
10591 | HE *source = HvARRAY(sstr)[i]; | |
10592 | HvARRAY(dstr)[i] = source | |
10593 | ? he_dup(source, sharekeys, param) : 0; | |
10594 | ++i; | |
10595 | } | |
10596 | if (SvOOK(sstr)) { | |
10597 | struct xpvhv_aux *saux = HvAUX(sstr); | |
10598 | struct xpvhv_aux *daux = HvAUX(dstr); | |
10599 | /* This flag isn't copied. */ | |
10600 | /* SvOOK_on(hv) attacks the IV flags. */ | |
10601 | SvFLAGS(dstr) |= SVf_OOK; | |
10602 | ||
10603 | hvname = saux->xhv_name; | |
dd690478 NC |
10604 | daux->xhv_name |
10605 | = hvname ? hek_dup(hvname, param) : hvname; | |
662fb8b2 NC |
10606 | |
10607 | daux->xhv_riter = saux->xhv_riter; | |
10608 | daux->xhv_eiter = saux->xhv_eiter | |
dd690478 NC |
10609 | ? he_dup(saux->xhv_eiter, |
10610 | (bool)!!HvSHAREKEYS(sstr), param) : 0; | |
662fb8b2 NC |
10611 | } |
10612 | } | |
10613 | else { | |
10614 | SvPV_set(dstr, Nullch); | |
10615 | } | |
10616 | /* Record stashes for possible cloning in Perl_clone(). */ | |
10617 | if(hvname) | |
10618 | av_push(param->stashes, dstr); | |
10619 | } | |
10620 | break; | |
10621 | case SVt_PVFM: | |
10622 | case SVt_PVCV: | |
10623 | /* NOTE: not refcounted */ | |
10624 | CvSTASH(dstr) = hv_dup(CvSTASH(dstr), param); | |
10625 | OP_REFCNT_LOCK; | |
10626 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(dstr)); | |
10627 | OP_REFCNT_UNLOCK; | |
10628 | if (CvCONST(dstr)) { | |
10629 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(dstr)) ? | |
10630 | SvREFCNT_inc(CvXSUBANY(dstr).any_ptr) : | |
10631 | sv_dup_inc((SV *)CvXSUBANY(dstr).any_ptr, param); | |
10632 | } | |
10633 | /* don't dup if copying back - CvGV isn't refcounted, so the | |
10634 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
10635 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
10636 | Nullgv : gv_dup(CvGV(dstr), param) ; | |
10637 | if (!(param->flags & CLONEf_COPY_STACKS)) { | |
10638 | CvDEPTH(dstr) = 0; | |
10639 | } | |
10640 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); | |
10641 | CvOUTSIDE(dstr) = | |
10642 | CvWEAKOUTSIDE(sstr) | |
10643 | ? cv_dup( CvOUTSIDE(dstr), param) | |
10644 | : cv_dup_inc(CvOUTSIDE(dstr), param); | |
10645 | if (!CvXSUB(dstr)) | |
10646 | CvFILE(dstr) = SAVEPV(CvFILE(dstr)); | |
10647 | break; | |
bfcb3514 | 10648 | } |
1d7c1841 | 10649 | } |
1d7c1841 GS |
10650 | } |
10651 | ||
10652 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
10653 | ++PL_sv_objcount; | |
10654 | ||
10655 | return dstr; | |
d2d73c3e | 10656 | } |
1d7c1841 | 10657 | |
645c22ef DM |
10658 | /* duplicate a context */ |
10659 | ||
1d7c1841 | 10660 | PERL_CONTEXT * |
a8fc9800 | 10661 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
10662 | { |
10663 | PERL_CONTEXT *ncxs; | |
10664 | ||
10665 | if (!cxs) | |
10666 | return (PERL_CONTEXT*)NULL; | |
10667 | ||
10668 | /* look for it in the table first */ | |
10669 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
10670 | if (ncxs) | |
10671 | return ncxs; | |
10672 | ||
10673 | /* create anew and remember what it is */ | |
10674 | Newz(56, ncxs, max + 1, PERL_CONTEXT); | |
10675 | ptr_table_store(PL_ptr_table, cxs, ncxs); | |
10676 | ||
10677 | while (ix >= 0) { | |
10678 | PERL_CONTEXT *cx = &cxs[ix]; | |
10679 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
10680 | ncx->cx_type = cx->cx_type; | |
10681 | if (CxTYPE(cx) == CXt_SUBST) { | |
10682 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
10683 | } | |
10684 | else { | |
10685 | ncx->blk_oldsp = cx->blk_oldsp; | |
10686 | ncx->blk_oldcop = cx->blk_oldcop; | |
1d7c1841 GS |
10687 | ncx->blk_oldmarksp = cx->blk_oldmarksp; |
10688 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
10689 | ncx->blk_oldpm = cx->blk_oldpm; | |
10690 | ncx->blk_gimme = cx->blk_gimme; | |
10691 | switch (CxTYPE(cx)) { | |
10692 | case CXt_SUB: | |
10693 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
10694 | ? cv_dup_inc(cx->blk_sub.cv, param) |
10695 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 10696 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 10697 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 10698 | : Nullav); |
d2d73c3e | 10699 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
10700 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
10701 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
10702 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
f39bc417 | 10703 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
10704 | break; |
10705 | case CXt_EVAL: | |
10706 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
10707 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 10708 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 10709 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 10710 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
f39bc417 | 10711 | ncx->blk_eval.retop = cx->blk_eval.retop; |
1d7c1841 GS |
10712 | break; |
10713 | case CXt_LOOP: | |
10714 | ncx->blk_loop.label = cx->blk_loop.label; | |
10715 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
10716 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
10717 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
10718 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
10719 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
10720 | ? cx->blk_loop.iterdata | |
d2d73c3e | 10721 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
10722 | ncx->blk_loop.oldcomppad |
10723 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
10724 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
10725 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
10726 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
10727 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
10728 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
10729 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
10730 | break; | |
10731 | case CXt_FORMAT: | |
d2d73c3e AB |
10732 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
10733 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
10734 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 | 10735 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
f39bc417 | 10736 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
10737 | break; |
10738 | case CXt_BLOCK: | |
10739 | case CXt_NULL: | |
10740 | break; | |
10741 | } | |
10742 | } | |
10743 | --ix; | |
10744 | } | |
10745 | return ncxs; | |
10746 | } | |
10747 | ||
645c22ef DM |
10748 | /* duplicate a stack info structure */ |
10749 | ||
1d7c1841 | 10750 | PERL_SI * |
a8fc9800 | 10751 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
10752 | { |
10753 | PERL_SI *nsi; | |
10754 | ||
10755 | if (!si) | |
10756 | return (PERL_SI*)NULL; | |
10757 | ||
10758 | /* look for it in the table first */ | |
10759 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
10760 | if (nsi) | |
10761 | return nsi; | |
10762 | ||
10763 | /* create anew and remember what it is */ | |
10764 | Newz(56, nsi, 1, PERL_SI); | |
10765 | ptr_table_store(PL_ptr_table, si, nsi); | |
10766 | ||
d2d73c3e | 10767 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
10768 | nsi->si_cxix = si->si_cxix; |
10769 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 10770 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 10771 | nsi->si_type = si->si_type; |
d2d73c3e AB |
10772 | nsi->si_prev = si_dup(si->si_prev, param); |
10773 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
10774 | nsi->si_markoff = si->si_markoff; |
10775 | ||
10776 | return nsi; | |
10777 | } | |
10778 | ||
10779 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
10780 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
10781 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
10782 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
10783 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
10784 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
10785 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
10786 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
10787 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
10788 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
10789 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
10790 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
10791 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
10792 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
10793 | ||
10794 | /* XXXXX todo */ | |
10795 | #define pv_dup_inc(p) SAVEPV(p) | |
10796 | #define pv_dup(p) SAVEPV(p) | |
10797 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
10798 | ||
645c22ef DM |
10799 | /* map any object to the new equivent - either something in the |
10800 | * ptr table, or something in the interpreter structure | |
10801 | */ | |
10802 | ||
1d7c1841 | 10803 | void * |
53c1dcc0 | 10804 | Perl_any_dup(pTHX_ void *v, const PerlInterpreter *proto_perl) |
1d7c1841 GS |
10805 | { |
10806 | void *ret; | |
10807 | ||
10808 | if (!v) | |
10809 | return (void*)NULL; | |
10810 | ||
10811 | /* look for it in the table first */ | |
10812 | ret = ptr_table_fetch(PL_ptr_table, v); | |
10813 | if (ret) | |
10814 | return ret; | |
10815 | ||
10816 | /* see if it is part of the interpreter structure */ | |
10817 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 10818 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 10819 | else { |
1d7c1841 | 10820 | ret = v; |
05ec9bb3 | 10821 | } |
1d7c1841 GS |
10822 | |
10823 | return ret; | |
10824 | } | |
10825 | ||
645c22ef DM |
10826 | /* duplicate the save stack */ |
10827 | ||
1d7c1841 | 10828 | ANY * |
a8fc9800 | 10829 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 | 10830 | { |
53c1dcc0 AL |
10831 | ANY * const ss = proto_perl->Tsavestack; |
10832 | const I32 max = proto_perl->Tsavestack_max; | |
10833 | I32 ix = proto_perl->Tsavestack_ix; | |
1d7c1841 GS |
10834 | ANY *nss; |
10835 | SV *sv; | |
10836 | GV *gv; | |
10837 | AV *av; | |
10838 | HV *hv; | |
10839 | void* ptr; | |
10840 | int intval; | |
10841 | long longval; | |
10842 | GP *gp; | |
10843 | IV iv; | |
c4e33207 | 10844 | char *c = NULL; |
1d7c1841 | 10845 | void (*dptr) (void*); |
acfe0abc | 10846 | void (*dxptr) (pTHX_ void*); |
1d7c1841 GS |
10847 | |
10848 | Newz(54, nss, max, ANY); | |
10849 | ||
10850 | while (ix > 0) { | |
b464bac0 | 10851 | I32 i = POPINT(ss,ix); |
1d7c1841 GS |
10852 | TOPINT(nss,ix) = i; |
10853 | switch (i) { | |
10854 | case SAVEt_ITEM: /* normal string */ | |
10855 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10856 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10857 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10858 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10859 | break; |
10860 | case SAVEt_SV: /* scalar reference */ | |
10861 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10862 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10863 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10864 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 10865 | break; |
f4dd75d9 GS |
10866 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
10867 | c = (char*)POPPTR(ss,ix); | |
10868 | TOPPTR(nss,ix) = pv_dup(c); | |
10869 | ptr = POPPTR(ss,ix); | |
10870 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10871 | break; | |
05ec9bb3 NIS |
10872 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
10873 | c = (char*)POPPTR(ss,ix); | |
10874 | TOPPTR(nss,ix) = savesharedpv(c); | |
10875 | ptr = POPPTR(ss,ix); | |
10876 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10877 | break; | |
1d7c1841 GS |
10878 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
10879 | case SAVEt_SVREF: /* scalar reference */ | |
10880 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10881 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10882 | ptr = POPPTR(ss,ix); |
10883 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
10884 | break; | |
10885 | case SAVEt_AV: /* array reference */ | |
10886 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10887 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 10888 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10889 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10890 | break; |
10891 | case SAVEt_HV: /* hash reference */ | |
10892 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10893 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 10894 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10895 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10896 | break; |
10897 | case SAVEt_INT: /* int reference */ | |
10898 | ptr = POPPTR(ss,ix); | |
10899 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10900 | intval = (int)POPINT(ss,ix); | |
10901 | TOPINT(nss,ix) = intval; | |
10902 | break; | |
10903 | case SAVEt_LONG: /* long reference */ | |
10904 | ptr = POPPTR(ss,ix); | |
10905 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10906 | longval = (long)POPLONG(ss,ix); | |
10907 | TOPLONG(nss,ix) = longval; | |
10908 | break; | |
10909 | case SAVEt_I32: /* I32 reference */ | |
10910 | case SAVEt_I16: /* I16 reference */ | |
10911 | case SAVEt_I8: /* I8 reference */ | |
10912 | ptr = POPPTR(ss,ix); | |
10913 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10914 | i = POPINT(ss,ix); | |
10915 | TOPINT(nss,ix) = i; | |
10916 | break; | |
10917 | case SAVEt_IV: /* IV reference */ | |
10918 | ptr = POPPTR(ss,ix); | |
10919 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10920 | iv = POPIV(ss,ix); | |
10921 | TOPIV(nss,ix) = iv; | |
10922 | break; | |
10923 | case SAVEt_SPTR: /* SV* reference */ | |
10924 | ptr = POPPTR(ss,ix); | |
10925 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10926 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10927 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
10928 | break; |
10929 | case SAVEt_VPTR: /* random* reference */ | |
10930 | ptr = POPPTR(ss,ix); | |
10931 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10932 | ptr = POPPTR(ss,ix); | |
10933 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10934 | break; | |
10935 | case SAVEt_PPTR: /* char* reference */ | |
10936 | ptr = POPPTR(ss,ix); | |
10937 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10938 | c = (char*)POPPTR(ss,ix); | |
10939 | TOPPTR(nss,ix) = pv_dup(c); | |
10940 | break; | |
10941 | case SAVEt_HPTR: /* HV* reference */ | |
10942 | ptr = POPPTR(ss,ix); | |
10943 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10944 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10945 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
10946 | break; |
10947 | case SAVEt_APTR: /* AV* reference */ | |
10948 | ptr = POPPTR(ss,ix); | |
10949 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10950 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10951 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
10952 | break; |
10953 | case SAVEt_NSTAB: | |
10954 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 10955 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10956 | break; |
10957 | case SAVEt_GP: /* scalar reference */ | |
10958 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 10959 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
10960 | (void)GpREFCNT_inc(gp); |
10961 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 10962 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
10963 | c = (char*)POPPTR(ss,ix); |
10964 | TOPPTR(nss,ix) = pv_dup(c); | |
10965 | iv = POPIV(ss,ix); | |
10966 | TOPIV(nss,ix) = iv; | |
10967 | iv = POPIV(ss,ix); | |
10968 | TOPIV(nss,ix) = iv; | |
10969 | break; | |
10970 | case SAVEt_FREESV: | |
26d9b02f | 10971 | case SAVEt_MORTALIZESV: |
1d7c1841 | 10972 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10973 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10974 | break; |
10975 | case SAVEt_FREEOP: | |
10976 | ptr = POPPTR(ss,ix); | |
10977 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
10978 | /* these are assumed to be refcounted properly */ | |
53c1dcc0 | 10979 | OP *o; |
1d7c1841 GS |
10980 | switch (((OP*)ptr)->op_type) { |
10981 | case OP_LEAVESUB: | |
10982 | case OP_LEAVESUBLV: | |
10983 | case OP_LEAVEEVAL: | |
10984 | case OP_LEAVE: | |
10985 | case OP_SCOPE: | |
10986 | case OP_LEAVEWRITE: | |
e977893f GS |
10987 | TOPPTR(nss,ix) = ptr; |
10988 | o = (OP*)ptr; | |
10989 | OpREFCNT_inc(o); | |
1d7c1841 GS |
10990 | break; |
10991 | default: | |
10992 | TOPPTR(nss,ix) = Nullop; | |
10993 | break; | |
10994 | } | |
10995 | } | |
10996 | else | |
10997 | TOPPTR(nss,ix) = Nullop; | |
10998 | break; | |
10999 | case SAVEt_FREEPV: | |
11000 | c = (char*)POPPTR(ss,ix); | |
11001 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11002 | break; | |
11003 | case SAVEt_CLEARSV: | |
11004 | longval = POPLONG(ss,ix); | |
11005 | TOPLONG(nss,ix) = longval; | |
11006 | break; | |
11007 | case SAVEt_DELETE: | |
11008 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11009 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11010 | c = (char*)POPPTR(ss,ix); |
11011 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11012 | i = POPINT(ss,ix); | |
11013 | TOPINT(nss,ix) = i; | |
11014 | break; | |
11015 | case SAVEt_DESTRUCTOR: | |
11016 | ptr = POPPTR(ss,ix); | |
11017 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11018 | dptr = POPDPTR(ss,ix); | |
8141890a JH |
11019 | TOPDPTR(nss,ix) = DPTR2FPTR(void (*)(void*), |
11020 | any_dup(FPTR2DPTR(void *, dptr), | |
11021 | proto_perl)); | |
1d7c1841 GS |
11022 | break; |
11023 | case SAVEt_DESTRUCTOR_X: | |
11024 | ptr = POPPTR(ss,ix); | |
11025 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11026 | dxptr = POPDXPTR(ss,ix); | |
8141890a JH |
11027 | TOPDXPTR(nss,ix) = DPTR2FPTR(void (*)(pTHX_ void*), |
11028 | any_dup(FPTR2DPTR(void *, dxptr), | |
11029 | proto_perl)); | |
1d7c1841 GS |
11030 | break; |
11031 | case SAVEt_REGCONTEXT: | |
11032 | case SAVEt_ALLOC: | |
11033 | i = POPINT(ss,ix); | |
11034 | TOPINT(nss,ix) = i; | |
11035 | ix -= i; | |
11036 | break; | |
11037 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
11038 | i = POPINT(ss,ix); | |
11039 | TOPINT(nss,ix) = i; | |
11040 | break; | |
11041 | case SAVEt_AELEM: /* array element */ | |
11042 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11043 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11044 | i = POPINT(ss,ix); |
11045 | TOPINT(nss,ix) = i; | |
11046 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11047 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
11048 | break; |
11049 | case SAVEt_HELEM: /* hash element */ | |
11050 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11051 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11052 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11053 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11054 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 11055 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11056 | break; |
11057 | case SAVEt_OP: | |
11058 | ptr = POPPTR(ss,ix); | |
11059 | TOPPTR(nss,ix) = ptr; | |
11060 | break; | |
11061 | case SAVEt_HINTS: | |
11062 | i = POPINT(ss,ix); | |
11063 | TOPINT(nss,ix) = i; | |
11064 | break; | |
c4410b1b GS |
11065 | case SAVEt_COMPPAD: |
11066 | av = (AV*)POPPTR(ss,ix); | |
58ed4fbe | 11067 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 11068 | break; |
c3564e5c GS |
11069 | case SAVEt_PADSV: |
11070 | longval = (long)POPLONG(ss,ix); | |
11071 | TOPLONG(nss,ix) = longval; | |
11072 | ptr = POPPTR(ss,ix); | |
11073 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11074 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11075 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 11076 | break; |
a1bb4754 | 11077 | case SAVEt_BOOL: |
38d8b13e | 11078 | ptr = POPPTR(ss,ix); |
b9609c01 | 11079 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 11080 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 11081 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 11082 | break; |
8bd2680e MHM |
11083 | case SAVEt_SET_SVFLAGS: |
11084 | i = POPINT(ss,ix); | |
11085 | TOPINT(nss,ix) = i; | |
11086 | i = POPINT(ss,ix); | |
11087 | TOPINT(nss,ix) = i; | |
11088 | sv = (SV*)POPPTR(ss,ix); | |
11089 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
11090 | break; | |
1d7c1841 GS |
11091 | default: |
11092 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
11093 | } | |
11094 | } | |
11095 | ||
11096 | return nss; | |
11097 | } | |
11098 | ||
9660f481 DM |
11099 | |
11100 | /* if sv is a stash, call $class->CLONE_SKIP(), and set the SVphv_CLONEABLE | |
11101 | * flag to the result. This is done for each stash before cloning starts, | |
11102 | * so we know which stashes want their objects cloned */ | |
11103 | ||
11104 | static void | |
11105 | do_mark_cloneable_stash(pTHX_ SV *sv) | |
11106 | { | |
53c1dcc0 | 11107 | const HEK * const hvname = HvNAME_HEK((HV*)sv); |
bfcb3514 | 11108 | if (hvname) { |
53c1dcc0 | 11109 | GV* const cloner = gv_fetchmethod_autoload((HV*)sv, "CLONE_SKIP", 0); |
9660f481 DM |
11110 | SvFLAGS(sv) |= SVphv_CLONEABLE; /* clone objects by default */ |
11111 | if (cloner && GvCV(cloner)) { | |
11112 | dSP; | |
11113 | UV status; | |
11114 | ||
11115 | ENTER; | |
11116 | SAVETMPS; | |
11117 | PUSHMARK(SP); | |
84bda14a | 11118 | XPUSHs(sv_2mortal(newSVhek(hvname))); |
9660f481 DM |
11119 | PUTBACK; |
11120 | call_sv((SV*)GvCV(cloner), G_SCALAR); | |
11121 | SPAGAIN; | |
11122 | status = POPu; | |
11123 | PUTBACK; | |
11124 | FREETMPS; | |
11125 | LEAVE; | |
11126 | if (status) | |
11127 | SvFLAGS(sv) &= ~SVphv_CLONEABLE; | |
11128 | } | |
11129 | } | |
11130 | } | |
11131 | ||
11132 | ||
11133 | ||
645c22ef DM |
11134 | /* |
11135 | =for apidoc perl_clone | |
11136 | ||
11137 | Create and return a new interpreter by cloning the current one. | |
11138 | ||
4be49ee6 | 11139 | perl_clone takes these flags as parameters: |
6a78b4db | 11140 | |
7a5fa8a2 NIS |
11141 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, |
11142 | without it we only clone the data and zero the stacks, | |
11143 | with it we copy the stacks and the new perl interpreter is | |
11144 | ready to run at the exact same point as the previous one. | |
11145 | The pseudo-fork code uses COPY_STACKS while the | |
6a78b4db AB |
11146 | threads->new doesn't. |
11147 | ||
11148 | CLONEf_KEEP_PTR_TABLE | |
7a5fa8a2 NIS |
11149 | perl_clone keeps a ptr_table with the pointer of the old |
11150 | variable as a key and the new variable as a value, | |
11151 | this allows it to check if something has been cloned and not | |
11152 | clone it again but rather just use the value and increase the | |
11153 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
11154 | the ptr_table using the function | |
11155 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
11156 | reason to keep it around is if you want to dup some of your own | |
11157 | variable who are outside the graph perl scans, example of this | |
6a78b4db AB |
11158 | code is in threads.xs create |
11159 | ||
11160 | CLONEf_CLONE_HOST | |
7a5fa8a2 NIS |
11161 | This is a win32 thing, it is ignored on unix, it tells perls |
11162 | win32host code (which is c++) to clone itself, this is needed on | |
11163 | win32 if you want to run two threads at the same time, | |
11164 | if you just want to do some stuff in a separate perl interpreter | |
11165 | and then throw it away and return to the original one, | |
6a78b4db AB |
11166 | you don't need to do anything. |
11167 | ||
645c22ef DM |
11168 | =cut |
11169 | */ | |
11170 | ||
11171 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
11172 | EXTERN_C PerlInterpreter * |
11173 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 11174 | |
1d7c1841 GS |
11175 | PerlInterpreter * |
11176 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
11177 | { | |
27da23d5 | 11178 | dVAR; |
1d7c1841 | 11179 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
11180 | |
11181 | /* perlhost.h so we need to call into it | |
11182 | to clone the host, CPerlHost should have a c interface, sky */ | |
11183 | ||
11184 | if (flags & CLONEf_CLONE_HOST) { | |
11185 | return perl_clone_host(proto_perl,flags); | |
11186 | } | |
11187 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
11188 | proto_perl->IMem, |
11189 | proto_perl->IMemShared, | |
11190 | proto_perl->IMemParse, | |
11191 | proto_perl->IEnv, | |
11192 | proto_perl->IStdIO, | |
11193 | proto_perl->ILIO, | |
11194 | proto_perl->IDir, | |
11195 | proto_perl->ISock, | |
11196 | proto_perl->IProc); | |
11197 | } | |
11198 | ||
11199 | PerlInterpreter * | |
11200 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
11201 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
11202 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
11203 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
11204 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
11205 | struct IPerlProc* ipP) | |
11206 | { | |
11207 | /* XXX many of the string copies here can be optimized if they're | |
11208 | * constants; they need to be allocated as common memory and just | |
11209 | * their pointers copied. */ | |
11210 | ||
8fc9efbd | 11211 | IV i; |
64aa0685 GS |
11212 | CLONE_PARAMS clone_params; |
11213 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 11214 | |
1d7c1841 | 11215 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
9660f481 DM |
11216 | /* for each stash, determine whether its objects should be cloned */ |
11217 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 11218 | PERL_SET_THX(my_perl); |
1d7c1841 | 11219 | |
acfe0abc | 11220 | # ifdef DEBUGGING |
a4530404 | 11221 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11222 | PL_op = Nullop; |
c008732b | 11223 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11224 | PL_markstack = 0; |
11225 | PL_scopestack = 0; | |
11226 | PL_savestack = 0; | |
22f7c9c9 JH |
11227 | PL_savestack_ix = 0; |
11228 | PL_savestack_max = -1; | |
66fe0623 | 11229 | PL_sig_pending = 0; |
25596c82 | 11230 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 11231 | # else /* !DEBUGGING */ |
1d7c1841 | 11232 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 11233 | # endif /* DEBUGGING */ |
1d7c1841 GS |
11234 | |
11235 | /* host pointers */ | |
11236 | PL_Mem = ipM; | |
11237 | PL_MemShared = ipMS; | |
11238 | PL_MemParse = ipMP; | |
11239 | PL_Env = ipE; | |
11240 | PL_StdIO = ipStd; | |
11241 | PL_LIO = ipLIO; | |
11242 | PL_Dir = ipD; | |
11243 | PL_Sock = ipS; | |
11244 | PL_Proc = ipP; | |
1d7c1841 GS |
11245 | #else /* !PERL_IMPLICIT_SYS */ |
11246 | IV i; | |
64aa0685 GS |
11247 | CLONE_PARAMS clone_params; |
11248 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 11249 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
9660f481 DM |
11250 | /* for each stash, determine whether its objects should be cloned */ |
11251 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 11252 | PERL_SET_THX(my_perl); |
1d7c1841 GS |
11253 | |
11254 | # ifdef DEBUGGING | |
a4530404 | 11255 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11256 | PL_op = Nullop; |
c008732b | 11257 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11258 | PL_markstack = 0; |
11259 | PL_scopestack = 0; | |
11260 | PL_savestack = 0; | |
22f7c9c9 JH |
11261 | PL_savestack_ix = 0; |
11262 | PL_savestack_max = -1; | |
66fe0623 | 11263 | PL_sig_pending = 0; |
25596c82 | 11264 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
11265 | # else /* !DEBUGGING */ |
11266 | Zero(my_perl, 1, PerlInterpreter); | |
11267 | # endif /* DEBUGGING */ | |
11268 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 11269 | param->flags = flags; |
59b40662 | 11270 | param->proto_perl = proto_perl; |
1d7c1841 GS |
11271 | |
11272 | /* arena roots */ | |
612f20c3 | 11273 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 11274 | PL_xnv_root = NULL; |
612f20c3 | 11275 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 11276 | PL_xpv_root = NULL; |
612f20c3 | 11277 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 11278 | PL_xpviv_root = NULL; |
612f20c3 | 11279 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 11280 | PL_xpvnv_root = NULL; |
612f20c3 | 11281 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 11282 | PL_xpvcv_root = NULL; |
612f20c3 | 11283 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 11284 | PL_xpvav_root = NULL; |
612f20c3 | 11285 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 11286 | PL_xpvhv_root = NULL; |
612f20c3 | 11287 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 11288 | PL_xpvmg_root = NULL; |
7552b40b DM |
11289 | PL_xpvgv_arenaroot = NULL; |
11290 | PL_xpvgv_root = NULL; | |
612f20c3 | 11291 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 11292 | PL_xpvlv_root = NULL; |
612f20c3 | 11293 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 11294 | PL_xpvbm_root = NULL; |
612f20c3 | 11295 | PL_he_arenaroot = NULL; |
1d7c1841 | 11296 | PL_he_root = NULL; |
892b45be | 11297 | #if defined(USE_ITHREADS) |
32e691d0 NC |
11298 | PL_pte_arenaroot = NULL; |
11299 | PL_pte_root = NULL; | |
892b45be | 11300 | #endif |
1d7c1841 GS |
11301 | PL_nice_chunk = NULL; |
11302 | PL_nice_chunk_size = 0; | |
11303 | PL_sv_count = 0; | |
11304 | PL_sv_objcount = 0; | |
11305 | PL_sv_root = Nullsv; | |
11306 | PL_sv_arenaroot = Nullsv; | |
11307 | ||
11308 | PL_debug = proto_perl->Idebug; | |
11309 | ||
8df990a8 NC |
11310 | PL_hash_seed = proto_perl->Ihash_seed; |
11311 | PL_rehash_seed = proto_perl->Irehash_seed; | |
11312 | ||
e5dd39fc | 11313 | #ifdef USE_REENTRANT_API |
68853529 SB |
11314 | /* XXX: things like -Dm will segfault here in perlio, but doing |
11315 | * PERL_SET_CONTEXT(proto_perl); | |
11316 | * breaks too many other things | |
11317 | */ | |
59bd0823 | 11318 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
11319 | #endif |
11320 | ||
1d7c1841 GS |
11321 | /* create SV map for pointer relocation */ |
11322 | PL_ptr_table = ptr_table_new(); | |
11323 | ||
11324 | /* initialize these special pointers as early as possible */ | |
11325 | SvANY(&PL_sv_undef) = NULL; | |
11326 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
11327 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
11328 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
11329 | ||
1d7c1841 | 11330 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 | 11331 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
0309f36e NC |
11332 | SvFLAGS(&PL_sv_no) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11333 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 11334 | SvPV_set(&PL_sv_no, SAVEPVN(PL_No, 0)); |
b162af07 SP |
11335 | SvCUR_set(&PL_sv_no, 0); |
11336 | SvLEN_set(&PL_sv_no, 1); | |
45977657 | 11337 | SvIV_set(&PL_sv_no, 0); |
9d6ce603 | 11338 | SvNV_set(&PL_sv_no, 0); |
1d7c1841 GS |
11339 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); |
11340 | ||
1d7c1841 | 11341 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 | 11342 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
0309f36e NC |
11343 | SvFLAGS(&PL_sv_yes) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11344 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 11345 | SvPV_set(&PL_sv_yes, SAVEPVN(PL_Yes, 1)); |
b162af07 SP |
11346 | SvCUR_set(&PL_sv_yes, 1); |
11347 | SvLEN_set(&PL_sv_yes, 2); | |
45977657 | 11348 | SvIV_set(&PL_sv_yes, 1); |
9d6ce603 | 11349 | SvNV_set(&PL_sv_yes, 1); |
1d7c1841 GS |
11350 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); |
11351 | ||
05ec9bb3 | 11352 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
11353 | PL_strtab = newHV(); |
11354 | HvSHAREKEYS_off(PL_strtab); | |
c4a9c09d | 11355 | hv_ksplit(PL_strtab, HvTOTALKEYS(proto_perl->Istrtab)); |
1d7c1841 GS |
11356 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); |
11357 | ||
05ec9bb3 NIS |
11358 | PL_compiling = proto_perl->Icompiling; |
11359 | ||
11360 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
11361 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
11362 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
11363 | ||
11364 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
11365 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
11366 | ||
1d7c1841 GS |
11367 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
11368 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 11369 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 11370 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 11371 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
11372 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
11373 | ||
11374 | /* pseudo environmental stuff */ | |
11375 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 11376 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 11377 | |
d2d73c3e AB |
11378 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
11379 | ||
a1ea730d | 11380 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
11381 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
11382 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 11383 | #endif |
d2d73c3e AB |
11384 | |
11385 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
11386 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
11387 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 11388 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
11389 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
11390 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
11391 | |
11392 | /* switches */ | |
11393 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 11394 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
11395 | PL_localpatches = proto_perl->Ilocalpatches; |
11396 | PL_splitstr = proto_perl->Isplitstr; | |
11397 | PL_preprocess = proto_perl->Ipreprocess; | |
11398 | PL_minus_n = proto_perl->Iminus_n; | |
11399 | PL_minus_p = proto_perl->Iminus_p; | |
11400 | PL_minus_l = proto_perl->Iminus_l; | |
11401 | PL_minus_a = proto_perl->Iminus_a; | |
11402 | PL_minus_F = proto_perl->Iminus_F; | |
11403 | PL_doswitches = proto_perl->Idoswitches; | |
11404 | PL_dowarn = proto_perl->Idowarn; | |
11405 | PL_doextract = proto_perl->Idoextract; | |
11406 | PL_sawampersand = proto_perl->Isawampersand; | |
11407 | PL_unsafe = proto_perl->Iunsafe; | |
11408 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 11409 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
11410 | PL_perldb = proto_perl->Iperldb; |
11411 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 11412 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
11413 | |
11414 | /* magical thingies */ | |
11415 | /* XXX time(&PL_basetime) when asked for? */ | |
11416 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 11417 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
11418 | |
11419 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
11420 | PL_multiline = proto_perl->Imultiline; | |
11421 | PL_statusvalue = proto_perl->Istatusvalue; | |
11422 | #ifdef VMS | |
11423 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
11424 | #endif | |
0a378802 | 11425 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 11426 | |
4a4c6fe3 | 11427 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
11428 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
11429 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 11430 | |
d2f185dc AMS |
11431 | /* Clone the regex array */ |
11432 | PL_regex_padav = newAV(); | |
11433 | { | |
a3b680e6 | 11434 | const I32 len = av_len((AV*)proto_perl->Iregex_padav); |
53c1dcc0 | 11435 | SV** const regexen = AvARRAY((AV*)proto_perl->Iregex_padav); |
b464bac0 | 11436 | IV i; |
0f95fc41 AB |
11437 | av_push(PL_regex_padav, |
11438 | sv_dup_inc(regexen[0],param)); | |
11439 | for(i = 1; i <= len; i++) { | |
11440 | if(SvREPADTMP(regexen[i])) { | |
11441 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 11442 | } else { |
0f95fc41 AB |
11443 | av_push(PL_regex_padav, |
11444 | SvREFCNT_inc( | |
8cf8f3d1 | 11445 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 11446 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
11447 | )); |
11448 | } | |
d2f185dc AMS |
11449 | } |
11450 | } | |
11451 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 11452 | |
1d7c1841 | 11453 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
11454 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
11455 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11456 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11457 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11458 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11459 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
11460 | |
11461 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 11462 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
11463 | |
11464 | /* shortcuts to misc objects */ | |
d2d73c3e | 11465 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
11466 | |
11467 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
11468 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
11469 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11470 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11471 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11472 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11473 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 11474 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
11475 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
11476 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
11477 | |
11478 | /* symbol tables */ | |
d2d73c3e AB |
11479 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
11480 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
11481 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
11482 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11483 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11484 | ||
11485 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 11486 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 11487 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
11488 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11489 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11490 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
11491 | |
11492 | PL_sub_generation = proto_perl->Isub_generation; | |
11493 | ||
11494 | /* funky return mechanisms */ | |
11495 | PL_forkprocess = proto_perl->Iforkprocess; | |
11496 | ||
11497 | /* subprocess state */ | |
d2d73c3e | 11498 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
11499 | |
11500 | /* internal state */ | |
11501 | PL_tainting = proto_perl->Itainting; | |
7135f00b | 11502 | PL_taint_warn = proto_perl->Itaint_warn; |
1d7c1841 GS |
11503 | PL_maxo = proto_perl->Imaxo; |
11504 | if (proto_perl->Iop_mask) | |
11505 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11506 | else | |
11507 | PL_op_mask = Nullch; | |
06492da6 | 11508 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
11509 | |
11510 | /* current interpreter roots */ | |
d2d73c3e | 11511 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
11512 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
11513 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 11514 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
11515 | PL_eval_start = proto_perl->Ieval_start; |
11516 | ||
11517 | /* runtime control stuff */ | |
11518 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11519 | PL_copline = proto_perl->Icopline; | |
11520 | ||
11521 | PL_filemode = proto_perl->Ifilemode; | |
11522 | PL_lastfd = proto_perl->Ilastfd; | |
11523 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11524 | PL_Argv = NULL; | |
11525 | PL_Cmd = Nullch; | |
11526 | PL_gensym = proto_perl->Igensym; | |
11527 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 11528 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
11529 | PL_laststatval = proto_perl->Ilaststatval; |
11530 | PL_laststype = proto_perl->Ilaststype; | |
11531 | PL_mess_sv = Nullsv; | |
11532 | ||
d2d73c3e | 11533 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
11534 | |
11535 | /* interpreter atexit processing */ | |
11536 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11537 | if (PL_exitlistlen) { | |
11538 | New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11539 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11540 | } | |
11541 | else | |
11542 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 11543 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
11544 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
11545 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
11546 | |
11547 | PL_profiledata = NULL; | |
a8fc9800 | 11548 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 11549 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 11550 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 11551 | |
d2d73c3e | 11552 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
11553 | |
11554 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
11555 | |
11556 | #ifdef HAVE_INTERP_INTERN | |
11557 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11558 | #endif | |
11559 | ||
11560 | /* more statics moved here */ | |
11561 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 11562 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
11563 | |
11564 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
11565 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
11566 | ||
11567 | PL_uid = proto_perl->Iuid; | |
11568 | PL_euid = proto_perl->Ieuid; | |
11569 | PL_gid = proto_perl->Igid; | |
11570 | PL_egid = proto_perl->Iegid; | |
11571 | PL_nomemok = proto_perl->Inomemok; | |
11572 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
11573 | PL_evalseq = proto_perl->Ievalseq; |
11574 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11575 | PL_origalen = proto_perl->Iorigalen; | |
11576 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
11577 | PL_osname = SAVEPV(proto_perl->Iosname); | |
1d7c1841 GS |
11578 | PL_sighandlerp = proto_perl->Isighandlerp; |
11579 | ||
1d7c1841 GS |
11580 | PL_runops = proto_perl->Irunops; |
11581 | ||
11582 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
11583 | ||
11584 | #ifdef CSH | |
11585 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 11586 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
11587 | #endif |
11588 | ||
11589 | PL_lex_state = proto_perl->Ilex_state; | |
11590 | PL_lex_defer = proto_perl->Ilex_defer; | |
11591 | PL_lex_expect = proto_perl->Ilex_expect; | |
11592 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
11593 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
11594 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
11595 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
11596 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
11597 | PL_lex_op = proto_perl->Ilex_op; |
11598 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
11599 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
11600 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
11601 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
11602 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
11603 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
11604 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
11605 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
11606 | ||
11607 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
11608 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
11609 | PL_nexttoke = proto_perl->Inexttoke; | |
11610 | ||
1d773130 TB |
11611 | /* XXX This is probably masking the deeper issue of why |
11612 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
11613 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
11614 | * (A little debugging with a watchpoint on it may help.) | |
11615 | */ | |
389edf32 TB |
11616 | if (SvANY(proto_perl->Ilinestr)) { |
11617 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
3f7c398e | 11618 | i = proto_perl->Ibufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11619 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11620 | i = proto_perl->Ioldbufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11621 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11622 | i = proto_perl->Ioldoldbufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11623 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11624 | i = proto_perl->Ilinestart - SvPVX_const(proto_perl->Ilinestr); |
389edf32 TB |
11625 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
11626 | } | |
11627 | else { | |
11628 | PL_linestr = NEWSV(65,79); | |
11629 | sv_upgrade(PL_linestr,SVt_PVIV); | |
11630 | sv_setpvn(PL_linestr,"",0); | |
11631 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
11632 | } | |
1d7c1841 | 11633 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
11634 | PL_pending_ident = proto_perl->Ipending_ident; |
11635 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
11636 | ||
11637 | PL_expect = proto_perl->Iexpect; | |
11638 | ||
11639 | PL_multi_start = proto_perl->Imulti_start; | |
11640 | PL_multi_end = proto_perl->Imulti_end; | |
11641 | PL_multi_open = proto_perl->Imulti_open; | |
11642 | PL_multi_close = proto_perl->Imulti_close; | |
11643 | ||
11644 | PL_error_count = proto_perl->Ierror_count; | |
11645 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 11646 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 11647 | |
1d773130 | 11648 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 | 11649 | if (SvANY(proto_perl->Ilinestr)) { |
3f7c398e | 11650 | i = proto_perl->Ilast_uni - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11651 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11652 | i = proto_perl->Ilast_lop - SvPVX_const(proto_perl->Ilinestr); |
389edf32 TB |
11653 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
11654 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
11655 | } | |
11656 | else { | |
11657 | PL_last_uni = SvPVX(PL_linestr); | |
11658 | PL_last_lop = SvPVX(PL_linestr); | |
11659 | PL_last_lop_op = 0; | |
11660 | } | |
1d7c1841 | 11661 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 11662 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
11663 | #ifdef FCRYPT |
11664 | PL_cryptseen = proto_perl->Icryptseen; | |
11665 | #endif | |
11666 | ||
11667 | PL_hints = proto_perl->Ihints; | |
11668 | ||
11669 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
11670 | ||
11671 | #ifdef USE_LOCALE_COLLATE | |
11672 | PL_collation_ix = proto_perl->Icollation_ix; | |
11673 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
11674 | PL_collation_standard = proto_perl->Icollation_standard; | |
11675 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
11676 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
11677 | #endif /* USE_LOCALE_COLLATE */ | |
11678 | ||
11679 | #ifdef USE_LOCALE_NUMERIC | |
11680 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
11681 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
11682 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 11683 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
11684 | #endif /* !USE_LOCALE_NUMERIC */ |
11685 | ||
11686 | /* utf8 character classes */ | |
d2d73c3e AB |
11687 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
11688 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
11689 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
11690 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
11691 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
11692 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
11693 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
11694 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
11695 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
11696 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
11697 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
11698 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
11699 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
11700 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
11701 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
11702 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
11703 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 11704 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
11705 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
11706 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 11707 | |
6c3182a5 | 11708 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 11709 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
11710 | /* Unicode features (see perlrun/-C) */ |
11711 | PL_unicode = proto_perl->Iunicode; | |
11712 | ||
11713 | /* Pre-5.8 signals control */ | |
11714 | PL_signals = proto_perl->Isignals; | |
11715 | ||
11716 | /* times() ticks per second */ | |
11717 | PL_clocktick = proto_perl->Iclocktick; | |
11718 | ||
11719 | /* Recursion stopper for PerlIO_find_layer */ | |
11720 | PL_in_load_module = proto_perl->Iin_load_module; | |
11721 | ||
11722 | /* sort() routine */ | |
11723 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
11724 | ||
57c6e6d2 JH |
11725 | /* Not really needed/useful since the reenrant_retint is "volatile", |
11726 | * but do it for consistency's sake. */ | |
11727 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
11728 | ||
15a5279a JH |
11729 | /* Hooks to shared SVs and locks. */ |
11730 | PL_sharehook = proto_perl->Isharehook; | |
11731 | PL_lockhook = proto_perl->Ilockhook; | |
11732 | PL_unlockhook = proto_perl->Iunlockhook; | |
11733 | PL_threadhook = proto_perl->Ithreadhook; | |
11734 | ||
bce260cd JH |
11735 | PL_runops_std = proto_perl->Irunops_std; |
11736 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
11737 | ||
11738 | #ifdef THREADS_HAVE_PIDS | |
11739 | PL_ppid = proto_perl->Ippid; | |
11740 | #endif | |
11741 | ||
1d7c1841 GS |
11742 | /* swatch cache */ |
11743 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
11744 | PL_last_swash_klen = 0; | |
11745 | PL_last_swash_key[0]= '\0'; | |
11746 | PL_last_swash_tmps = (U8*)NULL; | |
11747 | PL_last_swash_slen = 0; | |
11748 | ||
1d7c1841 GS |
11749 | PL_glob_index = proto_perl->Iglob_index; |
11750 | PL_srand_called = proto_perl->Isrand_called; | |
11751 | PL_uudmap['M'] = 0; /* reinits on demand */ | |
11752 | PL_bitcount = Nullch; /* reinits on demand */ | |
11753 | ||
66fe0623 NIS |
11754 | if (proto_perl->Ipsig_pend) { |
11755 | Newz(0, PL_psig_pend, SIG_SIZE, int); | |
9dd79c3f | 11756 | } |
66fe0623 NIS |
11757 | else { |
11758 | PL_psig_pend = (int*)NULL; | |
11759 | } | |
11760 | ||
1d7c1841 | 11761 | if (proto_perl->Ipsig_ptr) { |
76d3c696 JH |
11762 | Newz(0, PL_psig_ptr, SIG_SIZE, SV*); |
11763 | Newz(0, PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 11764 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
11765 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
11766 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
11767 | } |
11768 | } | |
11769 | else { | |
11770 | PL_psig_ptr = (SV**)NULL; | |
11771 | PL_psig_name = (SV**)NULL; | |
11772 | } | |
11773 | ||
11774 | /* thrdvar.h stuff */ | |
11775 | ||
a0739874 | 11776 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
11777 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
11778 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
11779 | PL_tmps_max = proto_perl->Ttmps_max; | |
11780 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
11781 | Newz(50, PL_tmps_stack, PL_tmps_max, SV*); | |
11782 | i = 0; | |
11783 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 11784 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
11785 | ++i; |
11786 | } | |
11787 | ||
11788 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
11789 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
11790 | Newz(54, PL_markstack, i, I32); | |
11791 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
11792 | - proto_perl->Tmarkstack); | |
11793 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
11794 | - proto_perl->Tmarkstack); | |
11795 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
11796 | PL_markstack_ptr - PL_markstack + 1, I32); | |
11797 | ||
11798 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
11799 | * NOTE: unlike the others! */ | |
11800 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
11801 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
11802 | Newz(54, PL_scopestack, PL_scopestack_max, I32); | |
11803 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
11804 | ||
1d7c1841 | 11805 | /* NOTE: si_dup() looks at PL_markstack */ |
d2d73c3e | 11806 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
11807 | |
11808 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
11809 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
11810 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
11811 | |
11812 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
11813 | PL_stack_base = AvARRAY(PL_curstack); | |
11814 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
11815 | - proto_perl->Tstack_base); | |
11816 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
11817 | ||
11818 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
11819 | * NOTE: unlike the others! */ | |
11820 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
11821 | PL_savestack_max = proto_perl->Tsavestack_max; | |
11822 | /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/ | |
d2d73c3e | 11823 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
11824 | } |
11825 | else { | |
11826 | init_stacks(); | |
985e7056 | 11827 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
11828 | } |
11829 | ||
11830 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
11831 | PL_top_env = &PL_start_env; | |
11832 | ||
11833 | PL_op = proto_perl->Top; | |
11834 | ||
11835 | PL_Sv = Nullsv; | |
11836 | PL_Xpv = (XPV*)NULL; | |
11837 | PL_na = proto_perl->Tna; | |
11838 | ||
11839 | PL_statbuf = proto_perl->Tstatbuf; | |
11840 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
11841 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
11842 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
11843 | #ifdef HAS_TIMES |
11844 | PL_timesbuf = proto_perl->Ttimesbuf; | |
11845 | #endif | |
11846 | ||
11847 | PL_tainted = proto_perl->Ttainted; | |
11848 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
11849 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
11850 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
11851 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
11852 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 11853 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
11854 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
11855 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
11856 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
11857 | |
11858 | PL_restartop = proto_perl->Trestartop; | |
11859 | PL_in_eval = proto_perl->Tin_eval; | |
11860 | PL_delaymagic = proto_perl->Tdelaymagic; | |
11861 | PL_dirty = proto_perl->Tdirty; | |
11862 | PL_localizing = proto_perl->Tlocalizing; | |
11863 | ||
d2d73c3e | 11864 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
dd28f7bb | 11865 | PL_hv_fetch_ent_mh = Nullhe; |
1d7c1841 GS |
11866 | PL_modcount = proto_perl->Tmodcount; |
11867 | PL_lastgotoprobe = Nullop; | |
11868 | PL_dumpindent = proto_perl->Tdumpindent; | |
11869 | ||
11870 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
11871 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
11872 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
11873 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
11874 | PL_sortcxix = proto_perl->Tsortcxix; |
11875 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
11876 | PL_efloatsize = 0; /* reinits on demand */ | |
11877 | ||
11878 | /* regex stuff */ | |
11879 | ||
11880 | PL_screamfirst = NULL; | |
11881 | PL_screamnext = NULL; | |
11882 | PL_maxscream = -1; /* reinits on demand */ | |
11883 | PL_lastscream = Nullsv; | |
11884 | ||
11885 | PL_watchaddr = NULL; | |
11886 | PL_watchok = Nullch; | |
11887 | ||
11888 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
11889 | PL_regprecomp = Nullch; |
11890 | PL_regnpar = 0; | |
11891 | PL_regsize = 0; | |
1d7c1841 GS |
11892 | PL_colorset = 0; /* reinits PL_colors[] */ |
11893 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
11894 | PL_reginput = Nullch; |
11895 | PL_regbol = Nullch; | |
11896 | PL_regeol = Nullch; | |
11897 | PL_regstartp = (I32*)NULL; | |
11898 | PL_regendp = (I32*)NULL; | |
11899 | PL_reglastparen = (U32*)NULL; | |
2d862feb | 11900 | PL_reglastcloseparen = (U32*)NULL; |
1d7c1841 | 11901 | PL_regtill = Nullch; |
1d7c1841 GS |
11902 | PL_reg_start_tmp = (char**)NULL; |
11903 | PL_reg_start_tmpl = 0; | |
11904 | PL_regdata = (struct reg_data*)NULL; | |
11905 | PL_bostr = Nullch; | |
11906 | PL_reg_flags = 0; | |
11907 | PL_reg_eval_set = 0; | |
11908 | PL_regnarrate = 0; | |
11909 | PL_regprogram = (regnode*)NULL; | |
11910 | PL_regindent = 0; | |
11911 | PL_regcc = (CURCUR*)NULL; | |
11912 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
11913 | PL_reg_re = (regexp*)NULL; | |
11914 | PL_reg_ganch = Nullch; | |
11915 | PL_reg_sv = Nullsv; | |
53c4c00c | 11916 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
11917 | PL_reg_magic = (MAGIC*)NULL; |
11918 | PL_reg_oldpos = 0; | |
11919 | PL_reg_oldcurpm = (PMOP*)NULL; | |
11920 | PL_reg_curpm = (PMOP*)NULL; | |
11921 | PL_reg_oldsaved = Nullch; | |
11922 | PL_reg_oldsavedlen = 0; | |
f8c7b90f | 11923 | #ifdef PERL_OLD_COPY_ON_WRITE |
504cff3b | 11924 | PL_nrs = Nullsv; |
ed252734 | 11925 | #endif |
1d7c1841 GS |
11926 | PL_reg_maxiter = 0; |
11927 | PL_reg_leftiter = 0; | |
11928 | PL_reg_poscache = Nullch; | |
11929 | PL_reg_poscache_size= 0; | |
11930 | ||
11931 | /* RE engine - function pointers */ | |
11932 | PL_regcompp = proto_perl->Tregcompp; | |
11933 | PL_regexecp = proto_perl->Tregexecp; | |
11934 | PL_regint_start = proto_perl->Tregint_start; | |
11935 | PL_regint_string = proto_perl->Tregint_string; | |
11936 | PL_regfree = proto_perl->Tregfree; | |
11937 | ||
11938 | PL_reginterp_cnt = 0; | |
11939 | PL_reg_starttry = 0; | |
11940 | ||
a2efc822 SC |
11941 | /* Pluggable optimizer */ |
11942 | PL_peepp = proto_perl->Tpeepp; | |
11943 | ||
081fc587 AB |
11944 | PL_stashcache = newHV(); |
11945 | ||
a0739874 DM |
11946 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
11947 | ptr_table_free(PL_ptr_table); | |
11948 | PL_ptr_table = NULL; | |
11949 | } | |
8cf8f3d1 | 11950 | |
f284b03f AMS |
11951 | /* Call the ->CLONE method, if it exists, for each of the stashes |
11952 | identified by sv_dup() above. | |
11953 | */ | |
d2d73c3e | 11954 | while(av_len(param->stashes) != -1) { |
53c1dcc0 AL |
11955 | HV* const stash = (HV*) av_shift(param->stashes); |
11956 | GV* const cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); | |
f284b03f AMS |
11957 | if (cloner && GvCV(cloner)) { |
11958 | dSP; | |
11959 | ENTER; | |
11960 | SAVETMPS; | |
11961 | PUSHMARK(SP); | |
84bda14a | 11962 | XPUSHs(sv_2mortal(newSVhek(HvNAME_HEK(stash)))); |
f284b03f AMS |
11963 | PUTBACK; |
11964 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
11965 | FREETMPS; | |
11966 | LEAVE; | |
11967 | } | |
4a09accc | 11968 | } |
a0739874 | 11969 | |
dc507217 | 11970 | SvREFCNT_dec(param->stashes); |
dc507217 | 11971 | |
6d26897e DM |
11972 | /* orphaned? eg threads->new inside BEGIN or use */ |
11973 | if (PL_compcv && ! SvREFCNT(PL_compcv)) { | |
a3b680e6 | 11974 | (void)SvREFCNT_inc(PL_compcv); |
6d26897e DM |
11975 | SAVEFREESV(PL_compcv); |
11976 | } | |
11977 | ||
1d7c1841 | 11978 | return my_perl; |
1d7c1841 GS |
11979 | } |
11980 | ||
1d7c1841 | 11981 | #endif /* USE_ITHREADS */ |
a0ae6670 | 11982 | |
9f4817db | 11983 | /* |
ccfc67b7 JH |
11984 | =head1 Unicode Support |
11985 | ||
9f4817db JH |
11986 | =for apidoc sv_recode_to_utf8 |
11987 | ||
5d170f3a JH |
11988 | The encoding is assumed to be an Encode object, on entry the PV |
11989 | of the sv is assumed to be octets in that encoding, and the sv | |
11990 | will be converted into Unicode (and UTF-8). | |
9f4817db | 11991 | |
5d170f3a JH |
11992 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
11993 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
11994 | an C<Encode::XS> Encoding object, bad things will happen. |
11995 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 11996 | |
5d170f3a | 11997 | The PV of the sv is returned. |
9f4817db | 11998 | |
5d170f3a JH |
11999 | =cut */ |
12000 | ||
12001 | char * | |
12002 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
12003 | { | |
27da23d5 | 12004 | dVAR; |
220e2d4e | 12005 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
12006 | SV *uni; |
12007 | STRLEN len; | |
93524f2b | 12008 | const char *s; |
d0063567 DK |
12009 | dSP; |
12010 | ENTER; | |
12011 | SAVETMPS; | |
220e2d4e | 12012 | save_re_context(); |
d0063567 DK |
12013 | PUSHMARK(sp); |
12014 | EXTEND(SP, 3); | |
12015 | XPUSHs(encoding); | |
12016 | XPUSHs(sv); | |
7a5fa8a2 | 12017 | /* |
f9893866 NIS |
12018 | NI-S 2002/07/09 |
12019 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
7a5fa8a2 | 12020 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means |
f9893866 NIS |
12021 | remove converted chars from source. |
12022 | ||
12023 | Both will default the value - let them. | |
7a5fa8a2 | 12024 | |
d0063567 | 12025 | XPUSHs(&PL_sv_yes); |
f9893866 | 12026 | */ |
d0063567 DK |
12027 | PUTBACK; |
12028 | call_method("decode", G_SCALAR); | |
12029 | SPAGAIN; | |
12030 | uni = POPs; | |
12031 | PUTBACK; | |
93524f2b | 12032 | s = SvPV_const(uni, len); |
3f7c398e | 12033 | if (s != SvPVX_const(sv)) { |
d0063567 | 12034 | SvGROW(sv, len + 1); |
93524f2b | 12035 | Move(s, SvPVX(sv), len + 1, char); |
d0063567 | 12036 | SvCUR_set(sv, len); |
d0063567 DK |
12037 | } |
12038 | FREETMPS; | |
12039 | LEAVE; | |
d0063567 | 12040 | SvUTF8_on(sv); |
95899a2a | 12041 | return SvPVX(sv); |
f9893866 | 12042 | } |
95899a2a | 12043 | return SvPOKp(sv) ? SvPVX(sv) : NULL; |
9f4817db JH |
12044 | } |
12045 | ||
220e2d4e IH |
12046 | /* |
12047 | =for apidoc sv_cat_decode | |
12048 | ||
12049 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
12050 | assumed to be octets in that encoding and decoding the input starts | |
12051 | from the position which (PV + *offset) pointed to. The dsv will be | |
12052 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
12053 | when the string tstr appears in decoding output or the input ends on | |
12054 | the PV of the ssv. The value which the offset points will be modified | |
12055 | to the last input position on the ssv. | |
68795e93 | 12056 | |
220e2d4e IH |
12057 | Returns TRUE if the terminator was found, else returns FALSE. |
12058 | ||
12059 | =cut */ | |
12060 | ||
12061 | bool | |
12062 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
12063 | SV *ssv, int *offset, char *tstr, int tlen) | |
12064 | { | |
27da23d5 | 12065 | dVAR; |
a73e8557 | 12066 | bool ret = FALSE; |
220e2d4e | 12067 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
12068 | SV *offsv; |
12069 | dSP; | |
12070 | ENTER; | |
12071 | SAVETMPS; | |
12072 | save_re_context(); | |
12073 | PUSHMARK(sp); | |
12074 | EXTEND(SP, 6); | |
12075 | XPUSHs(encoding); | |
12076 | XPUSHs(dsv); | |
12077 | XPUSHs(ssv); | |
12078 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
12079 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
12080 | PUTBACK; | |
12081 | call_method("cat_decode", G_SCALAR); | |
12082 | SPAGAIN; | |
12083 | ret = SvTRUE(TOPs); | |
12084 | *offset = SvIV(offsv); | |
12085 | PUTBACK; | |
12086 | FREETMPS; | |
12087 | LEAVE; | |
220e2d4e | 12088 | } |
a73e8557 JH |
12089 | else |
12090 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
12091 | return ret; | |
220e2d4e | 12092 | } |
f9893866 | 12093 | |
241d1a3b NC |
12094 | /* |
12095 | * Local variables: | |
12096 | * c-indentation-style: bsd | |
12097 | * c-basic-offset: 4 | |
12098 | * indent-tabs-mode: t | |
12099 | * End: | |
12100 | * | |
37442d52 RGS |
12101 | * ex: set ts=8 sts=4 sw=4 noet: |
12102 | */ |