Commit | Line | Data |
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a0d0e21e | 1 | /* sv.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
241d1a3b | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e | 9 | * "I wonder what the Entish is for 'yes' and 'no'," he thought. |
645c22ef DM |
10 | * |
11 | * | |
5e045b90 AMS |
12 | * This file contains the code that creates, manipulates and destroys |
13 | * scalar values (SVs). The other types (AV, HV, GV, etc.) reuse the | |
14 | * structure of an SV, so their creation and destruction is handled | |
15 | * here; higher-level functions are in av.c, hv.c, and so on. Opcode | |
16 | * level functions (eg. substr, split, join) for each of the types are | |
17 | * in the pp*.c files. | |
79072805 LW |
18 | */ |
19 | ||
20 | #include "EXTERN.h" | |
864dbfa3 | 21 | #define PERL_IN_SV_C |
79072805 | 22 | #include "perl.h" |
d2f185dc | 23 | #include "regcomp.h" |
79072805 | 24 | |
51371543 | 25 | #define FCALL *f |
2c5424a7 | 26 | |
2f8ed50e OS |
27 | #ifdef __Lynx__ |
28 | /* Missing proto on LynxOS */ | |
29 | char *gconvert(double, int, int, char *); | |
30 | #endif | |
31 | ||
e23c8137 JH |
32 | #ifdef PERL_UTF8_CACHE_ASSERT |
33 | /* The cache element 0 is the Unicode offset; | |
34 | * the cache element 1 is the byte offset of the element 0; | |
35 | * the cache element 2 is the Unicode length of the substring; | |
36 | * the cache element 3 is the byte length of the substring; | |
37 | * The checking of the substring side would be good | |
38 | * but substr() has enough code paths to make my head spin; | |
39 | * if adding more checks watch out for the following tests: | |
40 | * t/op/index.t t/op/length.t t/op/pat.t t/op/substr.t | |
41 | * lib/utf8.t lib/Unicode/Collate/t/index.t | |
42 | * --jhi | |
43 | */ | |
44 | #define ASSERT_UTF8_CACHE(cache) \ | |
45 | STMT_START { if (cache) { assert((cache)[0] <= (cache)[1]); } } STMT_END | |
46 | #else | |
47 | #define ASSERT_UTF8_CACHE(cache) NOOP | |
48 | #endif | |
49 | ||
765f542d NC |
50 | #ifdef PERL_COPY_ON_WRITE |
51 | #define SV_COW_NEXT_SV(sv) INT2PTR(SV *,SvUVX(sv)) | |
607fa7f2 | 52 | #define SV_COW_NEXT_SV_SET(current,next) SvUV_set(current, PTR2UV(next)) |
b5ccf5f2 | 53 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
765f542d | 54 | on-write. */ |
765f542d | 55 | #endif |
645c22ef DM |
56 | |
57 | /* ============================================================================ | |
58 | ||
59 | =head1 Allocation and deallocation of SVs. | |
60 | ||
5e045b90 AMS |
61 | An SV (or AV, HV, etc.) is allocated in two parts: the head (struct sv, |
62 | av, hv...) contains type and reference count information, as well as a | |
63 | pointer to the body (struct xrv, xpv, xpviv...), which contains fields | |
64 | specific to each type. | |
65 | ||
4977e971 NC |
66 | Normally, this allocation is done using arenas, which by default are |
67 | approximately 4K chunks of memory parcelled up into N heads or bodies. The | |
68 | first slot in each arena is reserved, and is used to hold a link to the next | |
69 | arena. In the case of heads, the unused first slot also contains some flags | |
70 | and a note of the number of slots. Snaked through each arena chain is a | |
5e045b90 | 71 | linked list of free items; when this becomes empty, an extra arena is |
4977e971 | 72 | allocated and divided up into N items which are threaded into the free list. |
645c22ef DM |
73 | |
74 | The following global variables are associated with arenas: | |
75 | ||
76 | PL_sv_arenaroot pointer to list of SV arenas | |
77 | PL_sv_root pointer to list of free SV structures | |
78 | ||
79 | PL_foo_arenaroot pointer to list of foo arenas, | |
80 | PL_foo_root pointer to list of free foo bodies | |
81 | ... for foo in xiv, xnv, xrv, xpv etc. | |
82 | ||
83 | Note that some of the larger and more rarely used body types (eg xpvio) | |
84 | are not allocated using arenas, but are instead just malloc()/free()ed as | |
85 | required. Also, if PURIFY is defined, arenas are abandoned altogether, | |
86 | with all items individually malloc()ed. In addition, a few SV heads are | |
87 | not allocated from an arena, but are instead directly created as static | |
4977e971 NC |
88 | or auto variables, eg PL_sv_undef. The size of arenas can be changed from |
89 | the default by setting PERL_ARENA_SIZE appropriately at compile time. | |
645c22ef DM |
90 | |
91 | The SV arena serves the secondary purpose of allowing still-live SVs | |
92 | to be located and destroyed during final cleanup. | |
93 | ||
94 | At the lowest level, the macros new_SV() and del_SV() grab and free | |
95 | an SV head. (If debugging with -DD, del_SV() calls the function S_del_sv() | |
96 | to return the SV to the free list with error checking.) new_SV() calls | |
97 | more_sv() / sv_add_arena() to add an extra arena if the free list is empty. | |
98 | SVs in the free list have their SvTYPE field set to all ones. | |
99 | ||
100 | Similarly, there are macros new_XIV()/del_XIV(), new_XNV()/del_XNV() etc | |
101 | that allocate and return individual body types. Normally these are mapped | |
ff276b08 RG |
102 | to the arena-manipulating functions new_xiv()/del_xiv() etc, but may be |
103 | instead mapped directly to malloc()/free() if PURIFY is defined. The | |
645c22ef DM |
104 | new/del functions remove from, or add to, the appropriate PL_foo_root |
105 | list, and call more_xiv() etc to add a new arena if the list is empty. | |
106 | ||
ff276b08 | 107 | At the time of very final cleanup, sv_free_arenas() is called from |
645c22ef DM |
108 | perl_destruct() to physically free all the arenas allocated since the |
109 | start of the interpreter. Note that this also clears PL_he_arenaroot, | |
110 | which is otherwise dealt with in hv.c. | |
111 | ||
112 | Manipulation of any of the PL_*root pointers is protected by enclosing | |
113 | LOCK_SV_MUTEX; ... UNLOCK_SV_MUTEX calls which should Do the Right Thing | |
114 | if threads are enabled. | |
115 | ||
116 | The function visit() scans the SV arenas list, and calls a specified | |
117 | function for each SV it finds which is still live - ie which has an SvTYPE | |
118 | other than all 1's, and a non-zero SvREFCNT. visit() is used by the | |
119 | following functions (specified as [function that calls visit()] / [function | |
120 | called by visit() for each SV]): | |
121 | ||
122 | sv_report_used() / do_report_used() | |
123 | dump all remaining SVs (debugging aid) | |
124 | ||
125 | sv_clean_objs() / do_clean_objs(),do_clean_named_objs() | |
126 | Attempt to free all objects pointed to by RVs, | |
127 | and, unless DISABLE_DESTRUCTOR_KLUDGE is defined, | |
128 | try to do the same for all objects indirectly | |
129 | referenced by typeglobs too. Called once from | |
130 | perl_destruct(), prior to calling sv_clean_all() | |
131 | below. | |
132 | ||
133 | sv_clean_all() / do_clean_all() | |
134 | SvREFCNT_dec(sv) each remaining SV, possibly | |
135 | triggering an sv_free(). It also sets the | |
136 | SVf_BREAK flag on the SV to indicate that the | |
137 | refcnt has been artificially lowered, and thus | |
138 | stopping sv_free() from giving spurious warnings | |
139 | about SVs which unexpectedly have a refcnt | |
140 | of zero. called repeatedly from perl_destruct() | |
141 | until there are no SVs left. | |
142 | ||
143 | =head2 Summary | |
144 | ||
145 | Private API to rest of sv.c | |
146 | ||
147 | new_SV(), del_SV(), | |
148 | ||
149 | new_XIV(), del_XIV(), | |
150 | new_XNV(), del_XNV(), | |
151 | etc | |
152 | ||
153 | Public API: | |
154 | ||
8cf8f3d1 | 155 | sv_report_used(), sv_clean_objs(), sv_clean_all(), sv_free_arenas() |
645c22ef DM |
156 | |
157 | ||
158 | =cut | |
159 | ||
160 | ============================================================================ */ | |
161 | ||
162 | ||
51371543 | 163 | |
4561caa4 CS |
164 | /* |
165 | * "A time to plant, and a time to uproot what was planted..." | |
166 | */ | |
167 | ||
cac9b346 | 168 | |
fd0854ff DM |
169 | #ifdef DEBUG_LEAKING_SCALARS |
170 | # ifdef NETWARE | |
171 | # define FREE_SV_DEBUG_FILE(sv) PerlMemfree((sv)->sv_debug_file) | |
172 | # else | |
173 | # define FREE_SV_DEBUG_FILE(sv) PerlMemShared_free((sv)->sv_debug_file) | |
174 | # endif | |
175 | #else | |
176 | # define FREE_SV_DEBUG_FILE(sv) | |
177 | #endif | |
178 | ||
053fc874 GS |
179 | #define plant_SV(p) \ |
180 | STMT_START { \ | |
fd0854ff | 181 | FREE_SV_DEBUG_FILE(p); \ |
053fc874 GS |
182 | SvANY(p) = (void *)PL_sv_root; \ |
183 | SvFLAGS(p) = SVTYPEMASK; \ | |
184 | PL_sv_root = (p); \ | |
185 | --PL_sv_count; \ | |
186 | } STMT_END | |
a0d0e21e | 187 | |
fba3b22e | 188 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
189 | #define uproot_SV(p) \ |
190 | STMT_START { \ | |
191 | (p) = PL_sv_root; \ | |
192 | PL_sv_root = (SV*)SvANY(p); \ | |
193 | ++PL_sv_count; \ | |
194 | } STMT_END | |
195 | ||
645c22ef | 196 | |
cac9b346 NC |
197 | /* make some more SVs by adding another arena */ |
198 | ||
199 | /* sv_mutex must be held while calling more_sv() */ | |
200 | STATIC SV* | |
201 | S_more_sv(pTHX) | |
202 | { | |
203 | SV* sv; | |
204 | ||
205 | if (PL_nice_chunk) { | |
206 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
207 | PL_nice_chunk = Nullch; | |
208 | PL_nice_chunk_size = 0; | |
209 | } | |
210 | else { | |
211 | char *chunk; /* must use New here to match call to */ | |
2e7ed132 NC |
212 | New(704,chunk,PERL_ARENA_SIZE,char); /* Safefree() in sv_free_arenas() */ |
213 | sv_add_arena(chunk, PERL_ARENA_SIZE, 0); | |
cac9b346 NC |
214 | } |
215 | uproot_SV(sv); | |
216 | return sv; | |
217 | } | |
218 | ||
645c22ef DM |
219 | /* new_SV(): return a new, empty SV head */ |
220 | ||
eba0f806 DM |
221 | #ifdef DEBUG_LEAKING_SCALARS |
222 | /* provide a real function for a debugger to play with */ | |
223 | STATIC SV* | |
224 | S_new_SV(pTHX) | |
225 | { | |
226 | SV* sv; | |
227 | ||
228 | LOCK_SV_MUTEX; | |
229 | if (PL_sv_root) | |
230 | uproot_SV(sv); | |
231 | else | |
cac9b346 | 232 | sv = S_more_sv(aTHX); |
eba0f806 DM |
233 | UNLOCK_SV_MUTEX; |
234 | SvANY(sv) = 0; | |
235 | SvREFCNT(sv) = 1; | |
236 | SvFLAGS(sv) = 0; | |
fd0854ff DM |
237 | sv->sv_debug_optype = PL_op ? PL_op->op_type : 0; |
238 | sv->sv_debug_line = (U16) ((PL_copline == NOLINE) ? | |
239 | (PL_curcop ? CopLINE(PL_curcop) : 0) : PL_copline); | |
240 | sv->sv_debug_inpad = 0; | |
241 | sv->sv_debug_cloned = 0; | |
242 | # ifdef NETWARE | |
243 | sv->sv_debug_file = PL_curcop ? savepv(CopFILE(PL_curcop)): NULL; | |
244 | # else | |
245 | sv->sv_debug_file = PL_curcop ? savesharedpv(CopFILE(PL_curcop)): NULL; | |
246 | # endif | |
247 | ||
eba0f806 DM |
248 | return sv; |
249 | } | |
250 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
251 | ||
252 | #else | |
253 | # define new_SV(p) \ | |
053fc874 GS |
254 | STMT_START { \ |
255 | LOCK_SV_MUTEX; \ | |
256 | if (PL_sv_root) \ | |
257 | uproot_SV(p); \ | |
258 | else \ | |
cac9b346 | 259 | (p) = S_more_sv(aTHX); \ |
053fc874 GS |
260 | UNLOCK_SV_MUTEX; \ |
261 | SvANY(p) = 0; \ | |
262 | SvREFCNT(p) = 1; \ | |
263 | SvFLAGS(p) = 0; \ | |
264 | } STMT_END | |
eba0f806 | 265 | #endif |
463ee0b2 | 266 | |
645c22ef DM |
267 | |
268 | /* del_SV(): return an empty SV head to the free list */ | |
269 | ||
a0d0e21e | 270 | #ifdef DEBUGGING |
4561caa4 | 271 | |
053fc874 GS |
272 | #define del_SV(p) \ |
273 | STMT_START { \ | |
274 | LOCK_SV_MUTEX; \ | |
aea4f609 | 275 | if (DEBUG_D_TEST) \ |
053fc874 GS |
276 | del_sv(p); \ |
277 | else \ | |
278 | plant_SV(p); \ | |
279 | UNLOCK_SV_MUTEX; \ | |
280 | } STMT_END | |
a0d0e21e | 281 | |
76e3520e | 282 | STATIC void |
cea2e8a9 | 283 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 284 | { |
aea4f609 | 285 | if (DEBUG_D_TEST) { |
4633a7c4 | 286 | SV* sva; |
a3b680e6 | 287 | bool ok = 0; |
3280af22 | 288 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
a3b680e6 AL |
289 | SV *sv = sva + 1; |
290 | SV *svend = &sva[SvREFCNT(sva)]; | |
c0ff570e | 291 | if (p >= sv && p < svend) { |
a0d0e21e | 292 | ok = 1; |
c0ff570e NC |
293 | break; |
294 | } | |
a0d0e21e LW |
295 | } |
296 | if (!ok) { | |
0453d815 | 297 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 298 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
299 | "Attempt to free non-arena SV: 0x%"UVxf |
300 | pTHX__FORMAT, PTR2UV(p) pTHX__VALUE); | |
a0d0e21e LW |
301 | return; |
302 | } | |
303 | } | |
4561caa4 | 304 | plant_SV(p); |
463ee0b2 | 305 | } |
a0d0e21e | 306 | |
4561caa4 CS |
307 | #else /* ! DEBUGGING */ |
308 | ||
309 | #define del_SV(p) plant_SV(p) | |
310 | ||
311 | #endif /* DEBUGGING */ | |
463ee0b2 | 312 | |
645c22ef DM |
313 | |
314 | /* | |
ccfc67b7 JH |
315 | =head1 SV Manipulation Functions |
316 | ||
645c22ef DM |
317 | =for apidoc sv_add_arena |
318 | ||
319 | Given a chunk of memory, link it to the head of the list of arenas, | |
320 | and split it into a list of free SVs. | |
321 | ||
322 | =cut | |
323 | */ | |
324 | ||
4633a7c4 | 325 | void |
864dbfa3 | 326 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 327 | { |
4633a7c4 | 328 | SV* sva = (SV*)ptr; |
463ee0b2 LW |
329 | register SV* sv; |
330 | register SV* svend; | |
4633a7c4 LW |
331 | |
332 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 333 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
334 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
335 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
336 | ||
3280af22 NIS |
337 | PL_sv_arenaroot = sva; |
338 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
339 | |
340 | svend = &sva[SvREFCNT(sva) - 1]; | |
341 | sv = sva + 1; | |
463ee0b2 | 342 | while (sv < svend) { |
a0d0e21e | 343 | SvANY(sv) = (void *)(SV*)(sv + 1); |
03e36789 | 344 | #ifdef DEBUGGING |
978b032e | 345 | SvREFCNT(sv) = 0; |
03e36789 NC |
346 | #endif |
347 | /* Must always set typemask because it's awlays checked in on cleanup | |
348 | when the arenas are walked looking for objects. */ | |
8990e307 | 349 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
350 | sv++; |
351 | } | |
352 | SvANY(sv) = 0; | |
03e36789 NC |
353 | #ifdef DEBUGGING |
354 | SvREFCNT(sv) = 0; | |
355 | #endif | |
4633a7c4 LW |
356 | SvFLAGS(sv) = SVTYPEMASK; |
357 | } | |
358 | ||
055972dc DM |
359 | /* visit(): call the named function for each non-free SV in the arenas |
360 | * whose flags field matches the flags/mask args. */ | |
645c22ef | 361 | |
5226ed68 | 362 | STATIC I32 |
055972dc | 363 | S_visit(pTHX_ SVFUNC_t f, U32 flags, U32 mask) |
8990e307 | 364 | { |
4633a7c4 | 365 | SV* sva; |
5226ed68 | 366 | I32 visited = 0; |
8990e307 | 367 | |
3280af22 | 368 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
a3b680e6 AL |
369 | register SV * const svend = &sva[SvREFCNT(sva)]; |
370 | register SV* sv; | |
4561caa4 | 371 | for (sv = sva + 1; sv < svend; ++sv) { |
055972dc DM |
372 | if (SvTYPE(sv) != SVTYPEMASK |
373 | && (sv->sv_flags & mask) == flags | |
374 | && SvREFCNT(sv)) | |
375 | { | |
acfe0abc | 376 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
377 | ++visited; |
378 | } | |
8990e307 LW |
379 | } |
380 | } | |
5226ed68 | 381 | return visited; |
8990e307 LW |
382 | } |
383 | ||
758a08c3 JH |
384 | #ifdef DEBUGGING |
385 | ||
645c22ef DM |
386 | /* called by sv_report_used() for each live SV */ |
387 | ||
388 | static void | |
acfe0abc | 389 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
390 | { |
391 | if (SvTYPE(sv) != SVTYPEMASK) { | |
392 | PerlIO_printf(Perl_debug_log, "****\n"); | |
393 | sv_dump(sv); | |
394 | } | |
395 | } | |
758a08c3 | 396 | #endif |
645c22ef DM |
397 | |
398 | /* | |
399 | =for apidoc sv_report_used | |
400 | ||
401 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
402 | ||
403 | =cut | |
404 | */ | |
405 | ||
8990e307 | 406 | void |
864dbfa3 | 407 | Perl_sv_report_used(pTHX) |
4561caa4 | 408 | { |
ff270d3a | 409 | #ifdef DEBUGGING |
055972dc | 410 | visit(do_report_used, 0, 0); |
ff270d3a | 411 | #endif |
4561caa4 CS |
412 | } |
413 | ||
645c22ef DM |
414 | /* called by sv_clean_objs() for each live SV */ |
415 | ||
416 | static void | |
acfe0abc | 417 | do_clean_objs(pTHX_ SV *sv) |
645c22ef DM |
418 | { |
419 | SV* rv; | |
420 | ||
421 | if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) { | |
422 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv))); | |
423 | if (SvWEAKREF(sv)) { | |
424 | sv_del_backref(sv); | |
425 | SvWEAKREF_off(sv); | |
b162af07 | 426 | SvRV_set(sv, NULL); |
645c22ef DM |
427 | } else { |
428 | SvROK_off(sv); | |
b162af07 | 429 | SvRV_set(sv, NULL); |
645c22ef DM |
430 | SvREFCNT_dec(rv); |
431 | } | |
432 | } | |
433 | ||
434 | /* XXX Might want to check arrays, etc. */ | |
435 | } | |
436 | ||
437 | /* called by sv_clean_objs() for each live SV */ | |
438 | ||
439 | #ifndef DISABLE_DESTRUCTOR_KLUDGE | |
440 | static void | |
acfe0abc | 441 | do_clean_named_objs(pTHX_ SV *sv) |
645c22ef DM |
442 | { |
443 | if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) { | |
444 | if ( SvOBJECT(GvSV(sv)) || | |
445 | (GvAV(sv) && SvOBJECT(GvAV(sv))) || | |
446 | (GvHV(sv) && SvOBJECT(GvHV(sv))) || | |
447 | (GvIO(sv) && SvOBJECT(GvIO(sv))) || | |
448 | (GvCV(sv) && SvOBJECT(GvCV(sv))) ) | |
449 | { | |
450 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv))); | |
ec5f3c78 | 451 | SvFLAGS(sv) |= SVf_BREAK; |
645c22ef DM |
452 | SvREFCNT_dec(sv); |
453 | } | |
454 | } | |
455 | } | |
456 | #endif | |
457 | ||
458 | /* | |
459 | =for apidoc sv_clean_objs | |
460 | ||
461 | Attempt to destroy all objects not yet freed | |
462 | ||
463 | =cut | |
464 | */ | |
465 | ||
4561caa4 | 466 | void |
864dbfa3 | 467 | Perl_sv_clean_objs(pTHX) |
4561caa4 | 468 | { |
3280af22 | 469 | PL_in_clean_objs = TRUE; |
055972dc | 470 | visit(do_clean_objs, SVf_ROK, SVf_ROK); |
4561caa4 | 471 | #ifndef DISABLE_DESTRUCTOR_KLUDGE |
2d0f3c12 | 472 | /* some barnacles may yet remain, clinging to typeglobs */ |
055972dc | 473 | visit(do_clean_named_objs, SVt_PVGV, SVTYPEMASK); |
4561caa4 | 474 | #endif |
3280af22 | 475 | PL_in_clean_objs = FALSE; |
4561caa4 CS |
476 | } |
477 | ||
645c22ef DM |
478 | /* called by sv_clean_all() for each live SV */ |
479 | ||
480 | static void | |
acfe0abc | 481 | do_clean_all(pTHX_ SV *sv) |
645c22ef DM |
482 | { |
483 | DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) )); | |
484 | SvFLAGS(sv) |= SVf_BREAK; | |
0e705b3b DM |
485 | if (PL_comppad == (AV*)sv) { |
486 | PL_comppad = Nullav; | |
487 | PL_curpad = Null(SV**); | |
488 | } | |
645c22ef DM |
489 | SvREFCNT_dec(sv); |
490 | } | |
491 | ||
492 | /* | |
493 | =for apidoc sv_clean_all | |
494 | ||
495 | Decrement the refcnt of each remaining SV, possibly triggering a | |
496 | cleanup. This function may have to be called multiple times to free | |
ff276b08 | 497 | SVs which are in complex self-referential hierarchies. |
645c22ef DM |
498 | |
499 | =cut | |
500 | */ | |
501 | ||
5226ed68 | 502 | I32 |
864dbfa3 | 503 | Perl_sv_clean_all(pTHX) |
8990e307 | 504 | { |
5226ed68 | 505 | I32 cleaned; |
3280af22 | 506 | PL_in_clean_all = TRUE; |
055972dc | 507 | cleaned = visit(do_clean_all, 0,0); |
3280af22 | 508 | PL_in_clean_all = FALSE; |
5226ed68 | 509 | return cleaned; |
8990e307 | 510 | } |
463ee0b2 | 511 | |
645c22ef DM |
512 | /* |
513 | =for apidoc sv_free_arenas | |
514 | ||
515 | Deallocate the memory used by all arenas. Note that all the individual SV | |
516 | heads and bodies within the arenas must already have been freed. | |
517 | ||
518 | =cut | |
519 | */ | |
520 | ||
4633a7c4 | 521 | void |
864dbfa3 | 522 | Perl_sv_free_arenas(pTHX) |
4633a7c4 LW |
523 | { |
524 | SV* sva; | |
525 | SV* svanext; | |
7b2c381c | 526 | void *arena, *arenanext; |
4633a7c4 LW |
527 | |
528 | /* Free arenas here, but be careful about fake ones. (We assume | |
529 | contiguity of the fake ones with the corresponding real ones.) */ | |
530 | ||
3280af22 | 531 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
532 | svanext = (SV*) SvANY(sva); |
533 | while (svanext && SvFAKE(svanext)) | |
534 | svanext = (SV*) SvANY(svanext); | |
535 | ||
536 | if (!SvFAKE(sva)) | |
1df70142 | 537 | Safefree(sva); |
4633a7c4 | 538 | } |
5f05dabc | 539 | |
612f20c3 | 540 | for (arena = PL_xnv_arenaroot; arena; arena = arenanext) { |
7b2c381c | 541 | arenanext = *(void **)arena; |
612f20c3 GS |
542 | Safefree(arena); |
543 | } | |
544 | PL_xnv_arenaroot = 0; | |
bf9cdc68 | 545 | PL_xnv_root = 0; |
612f20c3 | 546 | |
612f20c3 | 547 | for (arena = PL_xpv_arenaroot; arena; arena = arenanext) { |
7b2c381c | 548 | arenanext = *(void **)arena; |
612f20c3 GS |
549 | Safefree(arena); |
550 | } | |
551 | PL_xpv_arenaroot = 0; | |
bf9cdc68 | 552 | PL_xpv_root = 0; |
612f20c3 | 553 | |
7b2c381c NC |
554 | for (arena = PL_xpviv_arenaroot; arena; arena = arenanext) { |
555 | arenanext = *(void **)arena; | |
612f20c3 GS |
556 | Safefree(arena); |
557 | } | |
558 | PL_xpviv_arenaroot = 0; | |
bf9cdc68 | 559 | PL_xpviv_root = 0; |
612f20c3 | 560 | |
7b2c381c NC |
561 | for (arena = PL_xpvnv_arenaroot; arena; arena = arenanext) { |
562 | arenanext = *(void **)arena; | |
612f20c3 GS |
563 | Safefree(arena); |
564 | } | |
565 | PL_xpvnv_arenaroot = 0; | |
bf9cdc68 | 566 | PL_xpvnv_root = 0; |
612f20c3 | 567 | |
7b2c381c NC |
568 | for (arena = PL_xpvcv_arenaroot; arena; arena = arenanext) { |
569 | arenanext = *(void **)arena; | |
612f20c3 GS |
570 | Safefree(arena); |
571 | } | |
572 | PL_xpvcv_arenaroot = 0; | |
bf9cdc68 | 573 | PL_xpvcv_root = 0; |
612f20c3 | 574 | |
7b2c381c NC |
575 | for (arena = PL_xpvav_arenaroot; arena; arena = arenanext) { |
576 | arenanext = *(void **)arena; | |
612f20c3 GS |
577 | Safefree(arena); |
578 | } | |
579 | PL_xpvav_arenaroot = 0; | |
bf9cdc68 | 580 | PL_xpvav_root = 0; |
612f20c3 | 581 | |
7b2c381c NC |
582 | for (arena = PL_xpvhv_arenaroot; arena; arena = arenanext) { |
583 | arenanext = *(void **)arena; | |
612f20c3 GS |
584 | Safefree(arena); |
585 | } | |
586 | PL_xpvhv_arenaroot = 0; | |
bf9cdc68 | 587 | PL_xpvhv_root = 0; |
612f20c3 | 588 | |
7b2c381c NC |
589 | for (arena = PL_xpvmg_arenaroot; arena; arena = arenanext) { |
590 | arenanext = *(void **)arena; | |
612f20c3 GS |
591 | Safefree(arena); |
592 | } | |
593 | PL_xpvmg_arenaroot = 0; | |
bf9cdc68 | 594 | PL_xpvmg_root = 0; |
612f20c3 | 595 | |
7b2c381c NC |
596 | for (arena = PL_xpvgv_arenaroot; arena; arena = arenanext) { |
597 | arenanext = *(void **)arena; | |
727879eb NC |
598 | Safefree(arena); |
599 | } | |
600 | PL_xpvgv_arenaroot = 0; | |
601 | PL_xpvgv_root = 0; | |
602 | ||
7b2c381c NC |
603 | for (arena = PL_xpvlv_arenaroot; arena; arena = arenanext) { |
604 | arenanext = *(void **)arena; | |
612f20c3 GS |
605 | Safefree(arena); |
606 | } | |
607 | PL_xpvlv_arenaroot = 0; | |
bf9cdc68 | 608 | PL_xpvlv_root = 0; |
612f20c3 | 609 | |
7b2c381c NC |
610 | for (arena = PL_xpvbm_arenaroot; arena; arena = arenanext) { |
611 | arenanext = *(void **)arena; | |
612f20c3 GS |
612 | Safefree(arena); |
613 | } | |
614 | PL_xpvbm_arenaroot = 0; | |
bf9cdc68 | 615 | PL_xpvbm_root = 0; |
612f20c3 | 616 | |
b1135e3d NC |
617 | { |
618 | HE *he; | |
619 | HE *he_next; | |
620 | for (he = PL_he_arenaroot; he; he = he_next) { | |
621 | he_next = HeNEXT(he); | |
622 | Safefree(he); | |
623 | } | |
612f20c3 GS |
624 | } |
625 | PL_he_arenaroot = 0; | |
bf9cdc68 | 626 | PL_he_root = 0; |
612f20c3 | 627 | |
892b45be | 628 | #if defined(USE_ITHREADS) |
b1135e3d NC |
629 | { |
630 | struct ptr_tbl_ent *pte; | |
631 | struct ptr_tbl_ent *pte_next; | |
632 | for (pte = PL_pte_arenaroot; pte; pte = pte_next) { | |
633 | pte_next = pte->next; | |
634 | Safefree(pte); | |
635 | } | |
32e691d0 NC |
636 | } |
637 | PL_pte_arenaroot = 0; | |
638 | PL_pte_root = 0; | |
892b45be | 639 | #endif |
32e691d0 | 640 | |
3280af22 NIS |
641 | if (PL_nice_chunk) |
642 | Safefree(PL_nice_chunk); | |
643 | PL_nice_chunk = Nullch; | |
644 | PL_nice_chunk_size = 0; | |
645 | PL_sv_arenaroot = 0; | |
646 | PL_sv_root = 0; | |
4633a7c4 LW |
647 | } |
648 | ||
29489e7c DM |
649 | /* --------------------------------------------------------------------- |
650 | * | |
651 | * support functions for report_uninit() | |
652 | */ | |
653 | ||
654 | /* the maxiumum size of array or hash where we will scan looking | |
655 | * for the undefined element that triggered the warning */ | |
656 | ||
657 | #define FUV_MAX_SEARCH_SIZE 1000 | |
658 | ||
659 | /* Look for an entry in the hash whose value has the same SV as val; | |
660 | * If so, return a mortal copy of the key. */ | |
661 | ||
662 | STATIC SV* | |
663 | S_find_hash_subscript(pTHX_ HV *hv, SV* val) | |
664 | { | |
27da23d5 | 665 | dVAR; |
29489e7c | 666 | register HE **array; |
29489e7c DM |
667 | I32 i; |
668 | ||
669 | if (!hv || SvMAGICAL(hv) || !HvARRAY(hv) || | |
670 | (HvTOTALKEYS(hv) > FUV_MAX_SEARCH_SIZE)) | |
671 | return Nullsv; | |
672 | ||
673 | array = HvARRAY(hv); | |
674 | ||
675 | for (i=HvMAX(hv); i>0; i--) { | |
f54cb97a | 676 | register HE *entry; |
29489e7c DM |
677 | for (entry = array[i]; entry; entry = HeNEXT(entry)) { |
678 | if (HeVAL(entry) != val) | |
679 | continue; | |
680 | if ( HeVAL(entry) == &PL_sv_undef || | |
681 | HeVAL(entry) == &PL_sv_placeholder) | |
682 | continue; | |
683 | if (!HeKEY(entry)) | |
684 | return Nullsv; | |
685 | if (HeKLEN(entry) == HEf_SVKEY) | |
686 | return sv_mortalcopy(HeKEY_sv(entry)); | |
687 | return sv_2mortal(newSVpvn(HeKEY(entry), HeKLEN(entry))); | |
688 | } | |
689 | } | |
690 | return Nullsv; | |
691 | } | |
692 | ||
693 | /* Look for an entry in the array whose value has the same SV as val; | |
694 | * If so, return the index, otherwise return -1. */ | |
695 | ||
696 | STATIC I32 | |
697 | S_find_array_subscript(pTHX_ AV *av, SV* val) | |
698 | { | |
699 | SV** svp; | |
700 | I32 i; | |
701 | if (!av || SvMAGICAL(av) || !AvARRAY(av) || | |
702 | (AvFILLp(av) > FUV_MAX_SEARCH_SIZE)) | |
703 | return -1; | |
704 | ||
705 | svp = AvARRAY(av); | |
706 | for (i=AvFILLp(av); i>=0; i--) { | |
707 | if (svp[i] == val && svp[i] != &PL_sv_undef) | |
708 | return i; | |
709 | } | |
710 | return -1; | |
711 | } | |
712 | ||
713 | /* S_varname(): return the name of a variable, optionally with a subscript. | |
714 | * If gv is non-zero, use the name of that global, along with gvtype (one | |
715 | * of "$", "@", "%"); otherwise use the name of the lexical at pad offset | |
716 | * targ. Depending on the value of the subscript_type flag, return: | |
717 | */ | |
718 | ||
719 | #define FUV_SUBSCRIPT_NONE 1 /* "@foo" */ | |
720 | #define FUV_SUBSCRIPT_ARRAY 2 /* "$foo[aindex]" */ | |
721 | #define FUV_SUBSCRIPT_HASH 3 /* "$foo{keyname}" */ | |
722 | #define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */ | |
723 | ||
724 | STATIC SV* | |
bfed75c6 | 725 | S_varname(pTHX_ GV *gv, const char *gvtype, PADOFFSET targ, |
29489e7c DM |
726 | SV* keyname, I32 aindex, int subscript_type) |
727 | { | |
728 | AV *av; | |
a3b680e6 | 729 | SV *sv; |
29489e7c | 730 | |
a3b680e6 | 731 | SV * const name = sv_newmortal(); |
29489e7c DM |
732 | if (gv) { |
733 | ||
734 | /* simulate gv_fullname4(), but add literal '^' for $^FOO names | |
735 | * XXX get rid of all this if gv_fullnameX() ever supports this | |
736 | * directly */ | |
737 | ||
bfed75c6 | 738 | const char *p; |
29489e7c DM |
739 | HV *hv = GvSTASH(gv); |
740 | sv_setpv(name, gvtype); | |
741 | if (!hv) | |
742 | p = "???"; | |
bfcb3514 | 743 | else if (!(p=HvNAME_get(hv))) |
29489e7c | 744 | p = "__ANON__"; |
29489e7c DM |
745 | if (strNE(p, "main")) { |
746 | sv_catpv(name,p); | |
747 | sv_catpvn(name,"::", 2); | |
748 | } | |
749 | if (GvNAMELEN(gv)>= 1 && | |
750 | ((unsigned int)*GvNAME(gv)) <= 26) | |
751 | { /* handle $^FOO */ | |
752 | Perl_sv_catpvf(aTHX_ name,"^%c", *GvNAME(gv) + 'A' - 1); | |
753 | sv_catpvn(name,GvNAME(gv)+1,GvNAMELEN(gv)-1); | |
754 | } | |
755 | else | |
756 | sv_catpvn(name,GvNAME(gv),GvNAMELEN(gv)); | |
757 | } | |
758 | else { | |
759 | U32 u; | |
760 | CV *cv = find_runcv(&u); | |
616d8c9c AL |
761 | STRLEN len; |
762 | const char *str; | |
29489e7c DM |
763 | if (!cv || !CvPADLIST(cv)) |
764 | return Nullsv;; | |
765 | av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE)); | |
766 | sv = *av_fetch(av, targ, FALSE); | |
767 | /* SvLEN in a pad name is not to be trusted */ | |
616d8c9c AL |
768 | str = SvPV(sv,len); |
769 | sv_setpvn(name, str, len); | |
29489e7c DM |
770 | } |
771 | ||
772 | if (subscript_type == FUV_SUBSCRIPT_HASH) { | |
773 | *SvPVX(name) = '$'; | |
774 | sv = NEWSV(0,0); | |
775 | Perl_sv_catpvf(aTHX_ name, "{%s}", | |
3f7c398e | 776 | pv_display(sv,SvPVX_const(keyname), SvCUR(keyname), 0, 32)); |
29489e7c DM |
777 | SvREFCNT_dec(sv); |
778 | } | |
779 | else if (subscript_type == FUV_SUBSCRIPT_ARRAY) { | |
780 | *SvPVX(name) = '$'; | |
265a12b8 | 781 | Perl_sv_catpvf(aTHX_ name, "[%"IVdf"]", (IV)aindex); |
29489e7c DM |
782 | } |
783 | else if (subscript_type == FUV_SUBSCRIPT_WITHIN) | |
784 | sv_insert(name, 0, 0, "within ", 7); | |
785 | ||
786 | return name; | |
787 | } | |
788 | ||
789 | ||
790 | /* | |
791 | =for apidoc find_uninit_var | |
792 | ||
793 | Find the name of the undefined variable (if any) that caused the operator o | |
794 | to issue a "Use of uninitialized value" warning. | |
795 | If match is true, only return a name if it's value matches uninit_sv. | |
796 | So roughly speaking, if a unary operator (such as OP_COS) generates a | |
797 | warning, then following the direct child of the op may yield an | |
798 | OP_PADSV or OP_GV that gives the name of the undefined variable. On the | |
799 | other hand, with OP_ADD there are two branches to follow, so we only print | |
800 | the variable name if we get an exact match. | |
801 | ||
802 | The name is returned as a mortal SV. | |
803 | ||
804 | Assumes that PL_op is the op that originally triggered the error, and that | |
805 | PL_comppad/PL_curpad points to the currently executing pad. | |
806 | ||
807 | =cut | |
808 | */ | |
809 | ||
810 | STATIC SV * | |
811 | S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match) | |
812 | { | |
27da23d5 | 813 | dVAR; |
29489e7c DM |
814 | SV *sv; |
815 | AV *av; | |
816 | SV **svp; | |
817 | GV *gv; | |
818 | OP *o, *o2, *kid; | |
819 | ||
820 | if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef || | |
821 | uninit_sv == &PL_sv_placeholder))) | |
822 | return Nullsv; | |
823 | ||
824 | switch (obase->op_type) { | |
825 | ||
826 | case OP_RV2AV: | |
827 | case OP_RV2HV: | |
828 | case OP_PADAV: | |
829 | case OP_PADHV: | |
830 | { | |
f54cb97a AL |
831 | const bool pad = (obase->op_type == OP_PADAV || obase->op_type == OP_PADHV); |
832 | const bool hash = (obase->op_type == OP_PADHV || obase->op_type == OP_RV2HV); | |
112dcc46 RGS |
833 | I32 index = 0; |
834 | SV *keysv = Nullsv; | |
29489e7c DM |
835 | int subscript_type = FUV_SUBSCRIPT_WITHIN; |
836 | ||
837 | if (pad) { /* @lex, %lex */ | |
838 | sv = PAD_SVl(obase->op_targ); | |
839 | gv = Nullgv; | |
840 | } | |
841 | else { | |
842 | if (cUNOPx(obase)->op_first->op_type == OP_GV) { | |
843 | /* @global, %global */ | |
844 | gv = cGVOPx_gv(cUNOPx(obase)->op_first); | |
845 | if (!gv) | |
846 | break; | |
847 | sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv); | |
848 | } | |
849 | else /* @{expr}, %{expr} */ | |
850 | return find_uninit_var(cUNOPx(obase)->op_first, | |
851 | uninit_sv, match); | |
852 | } | |
853 | ||
854 | /* attempt to find a match within the aggregate */ | |
855 | if (hash) { | |
856 | keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
857 | if (keysv) | |
858 | subscript_type = FUV_SUBSCRIPT_HASH; | |
859 | } | |
860 | else { | |
861 | index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
862 | if (index >= 0) | |
863 | subscript_type = FUV_SUBSCRIPT_ARRAY; | |
864 | } | |
865 | ||
866 | if (match && subscript_type == FUV_SUBSCRIPT_WITHIN) | |
867 | break; | |
868 | ||
869 | return S_varname(aTHX_ gv, hash ? "%" : "@", obase->op_targ, | |
870 | keysv, index, subscript_type); | |
871 | } | |
872 | ||
873 | case OP_PADSV: | |
874 | if (match && PAD_SVl(obase->op_targ) != uninit_sv) | |
875 | break; | |
876 | return S_varname(aTHX_ Nullgv, "$", obase->op_targ, | |
877 | Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
878 | ||
879 | case OP_GVSV: | |
880 | gv = cGVOPx_gv(obase); | |
881 | if (!gv || (match && GvSV(gv) != uninit_sv)) | |
882 | break; | |
883 | return S_varname(aTHX_ gv, "$", 0, Nullsv, 0, FUV_SUBSCRIPT_NONE); | |
884 | ||
885 | case OP_AELEMFAST: | |
886 | if (obase->op_flags & OPf_SPECIAL) { /* lexical array */ | |
887 | if (match) { | |
888 | av = (AV*)PAD_SV(obase->op_targ); | |
889 | if (!av || SvRMAGICAL(av)) | |
890 | break; | |
891 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
892 | if (!svp || *svp != uninit_sv) | |
893 | break; | |
894 | } | |
895 | return S_varname(aTHX_ Nullgv, "$", obase->op_targ, | |
896 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
897 | } | |
898 | else { | |
899 | gv = cGVOPx_gv(obase); | |
900 | if (!gv) | |
901 | break; | |
902 | if (match) { | |
903 | av = GvAV(gv); | |
904 | if (!av || SvRMAGICAL(av)) | |
905 | break; | |
906 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
907 | if (!svp || *svp != uninit_sv) | |
908 | break; | |
909 | } | |
910 | return S_varname(aTHX_ gv, "$", 0, | |
911 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); | |
912 | } | |
913 | break; | |
914 | ||
915 | case OP_EXISTS: | |
916 | o = cUNOPx(obase)->op_first; | |
917 | if (!o || o->op_type != OP_NULL || | |
918 | ! (o->op_targ == OP_AELEM || o->op_targ == OP_HELEM)) | |
919 | break; | |
920 | return find_uninit_var(cBINOPo->op_last, uninit_sv, match); | |
921 | ||
922 | case OP_AELEM: | |
923 | case OP_HELEM: | |
924 | if (PL_op == obase) | |
925 | /* $a[uninit_expr] or $h{uninit_expr} */ | |
926 | return find_uninit_var(cBINOPx(obase)->op_last, uninit_sv, match); | |
927 | ||
928 | gv = Nullgv; | |
929 | o = cBINOPx(obase)->op_first; | |
930 | kid = cBINOPx(obase)->op_last; | |
931 | ||
932 | /* get the av or hv, and optionally the gv */ | |
933 | sv = Nullsv; | |
934 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) { | |
935 | sv = PAD_SV(o->op_targ); | |
936 | } | |
937 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_RV2HV) | |
938 | && cUNOPo->op_first->op_type == OP_GV) | |
939 | { | |
940 | gv = cGVOPx_gv(cUNOPo->op_first); | |
941 | if (!gv) | |
942 | break; | |
943 | sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv); | |
944 | } | |
945 | if (!sv) | |
946 | break; | |
947 | ||
948 | if (kid && kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) { | |
949 | /* index is constant */ | |
950 | if (match) { | |
951 | if (SvMAGICAL(sv)) | |
952 | break; | |
953 | if (obase->op_type == OP_HELEM) { | |
954 | HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0); | |
955 | if (!he || HeVAL(he) != uninit_sv) | |
956 | break; | |
957 | } | |
958 | else { | |
959 | svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE); | |
960 | if (!svp || *svp != uninit_sv) | |
961 | break; | |
962 | } | |
963 | } | |
964 | if (obase->op_type == OP_HELEM) | |
965 | return S_varname(aTHX_ gv, "%", o->op_targ, | |
966 | cSVOPx_sv(kid), 0, FUV_SUBSCRIPT_HASH); | |
967 | else | |
968 | return S_varname(aTHX_ gv, "@", o->op_targ, Nullsv, | |
969 | SvIV(cSVOPx_sv(kid)), FUV_SUBSCRIPT_ARRAY); | |
970 | ; | |
971 | } | |
972 | else { | |
973 | /* index is an expression; | |
974 | * attempt to find a match within the aggregate */ | |
975 | if (obase->op_type == OP_HELEM) { | |
976 | SV *keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
977 | if (keysv) | |
978 | return S_varname(aTHX_ gv, "%", o->op_targ, | |
979 | keysv, 0, FUV_SUBSCRIPT_HASH); | |
980 | } | |
981 | else { | |
f54cb97a | 982 | const I32 index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); |
29489e7c | 983 | if (index >= 0) |
f54cb97a | 984 | return S_varname(aTHX_ gv, "@", o->op_targ, |
29489e7c DM |
985 | Nullsv, index, FUV_SUBSCRIPT_ARRAY); |
986 | } | |
987 | if (match) | |
988 | break; | |
989 | return S_varname(aTHX_ gv, | |
990 | (o->op_type == OP_PADAV || o->op_type == OP_RV2AV) | |
991 | ? "@" : "%", | |
992 | o->op_targ, Nullsv, 0, FUV_SUBSCRIPT_WITHIN); | |
993 | } | |
994 | ||
995 | break; | |
996 | ||
997 | case OP_AASSIGN: | |
998 | /* only examine RHS */ | |
999 | return find_uninit_var(cBINOPx(obase)->op_first, uninit_sv, match); | |
1000 | ||
1001 | case OP_OPEN: | |
1002 | o = cUNOPx(obase)->op_first; | |
1003 | if (o->op_type == OP_PUSHMARK) | |
1004 | o = o->op_sibling; | |
1005 | ||
1006 | if (!o->op_sibling) { | |
1007 | /* one-arg version of open is highly magical */ | |
1008 | ||
1009 | if (o->op_type == OP_GV) { /* open FOO; */ | |
1010 | gv = cGVOPx_gv(o); | |
1011 | if (match && GvSV(gv) != uninit_sv) | |
1012 | break; | |
7a5fa8a2 | 1013 | return S_varname(aTHX_ gv, "$", 0, |
29489e7c DM |
1014 | Nullsv, 0, FUV_SUBSCRIPT_NONE); |
1015 | } | |
1016 | /* other possibilities not handled are: | |
1017 | * open $x; or open my $x; should return '${*$x}' | |
1018 | * open expr; should return '$'.expr ideally | |
1019 | */ | |
1020 | break; | |
1021 | } | |
1022 | goto do_op; | |
1023 | ||
1024 | /* ops where $_ may be an implicit arg */ | |
1025 | case OP_TRANS: | |
1026 | case OP_SUBST: | |
1027 | case OP_MATCH: | |
1028 | if ( !(obase->op_flags & OPf_STACKED)) { | |
1029 | if (uninit_sv == ((obase->op_private & OPpTARGET_MY) | |
1030 | ? PAD_SVl(obase->op_targ) | |
1031 | : DEFSV)) | |
1032 | { | |
1033 | sv = sv_newmortal(); | |
616d8c9c | 1034 | sv_setpvn(sv, "$_", 2); |
29489e7c DM |
1035 | return sv; |
1036 | } | |
1037 | } | |
1038 | goto do_op; | |
1039 | ||
1040 | case OP_PRTF: | |
1041 | case OP_PRINT: | |
1042 | /* skip filehandle as it can't produce 'undef' warning */ | |
1043 | o = cUNOPx(obase)->op_first; | |
1044 | if ((obase->op_flags & OPf_STACKED) && o->op_type == OP_PUSHMARK) | |
1045 | o = o->op_sibling->op_sibling; | |
1046 | goto do_op2; | |
1047 | ||
1048 | ||
e21bd382 | 1049 | case OP_RV2SV: |
29489e7c DM |
1050 | case OP_CUSTOM: |
1051 | case OP_ENTERSUB: | |
1052 | match = 1; /* XS or custom code could trigger random warnings */ | |
1053 | goto do_op; | |
1054 | ||
1055 | case OP_SCHOMP: | |
1056 | case OP_CHOMP: | |
1057 | if (SvROK(PL_rs) && uninit_sv == SvRV(PL_rs)) | |
1058 | return sv_2mortal(newSVpv("${$/}", 0)); | |
1059 | /* FALL THROUGH */ | |
1060 | ||
1061 | default: | |
1062 | do_op: | |
1063 | if (!(obase->op_flags & OPf_KIDS)) | |
1064 | break; | |
1065 | o = cUNOPx(obase)->op_first; | |
1066 | ||
1067 | do_op2: | |
1068 | if (!o) | |
1069 | break; | |
1070 | ||
1071 | /* if all except one arg are constant, or have no side-effects, | |
1072 | * or are optimized away, then it's unambiguous */ | |
1073 | o2 = Nullop; | |
1074 | for (kid=o; kid; kid = kid->op_sibling) { | |
1075 | if (kid && | |
1076 | ( (kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) | |
1077 | || (kid->op_type == OP_NULL && ! (kid->op_flags & OPf_KIDS)) | |
1078 | || (kid->op_type == OP_PUSHMARK) | |
1079 | ) | |
1080 | ) | |
1081 | continue; | |
1082 | if (o2) { /* more than one found */ | |
1083 | o2 = Nullop; | |
1084 | break; | |
1085 | } | |
1086 | o2 = kid; | |
1087 | } | |
1088 | if (o2) | |
1089 | return find_uninit_var(o2, uninit_sv, match); | |
1090 | ||
1091 | /* scan all args */ | |
1092 | while (o) { | |
1093 | sv = find_uninit_var(o, uninit_sv, 1); | |
1094 | if (sv) | |
1095 | return sv; | |
1096 | o = o->op_sibling; | |
1097 | } | |
1098 | break; | |
1099 | } | |
1100 | return Nullsv; | |
1101 | } | |
1102 | ||
1103 | ||
645c22ef DM |
1104 | /* |
1105 | =for apidoc report_uninit | |
1106 | ||
1107 | Print appropriate "Use of uninitialized variable" warning | |
1108 | ||
1109 | =cut | |
1110 | */ | |
1111 | ||
1d7c1841 | 1112 | void |
29489e7c DM |
1113 | Perl_report_uninit(pTHX_ SV* uninit_sv) |
1114 | { | |
1115 | if (PL_op) { | |
112dcc46 | 1116 | SV* varname = Nullsv; |
29489e7c DM |
1117 | if (uninit_sv) { |
1118 | varname = find_uninit_var(PL_op, uninit_sv,0); | |
1119 | if (varname) | |
1120 | sv_insert(varname, 0, 0, " ", 1); | |
1121 | } | |
9014280d | 1122 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
29489e7c DM |
1123 | varname ? SvPV_nolen(varname) : "", |
1124 | " in ", OP_DESC(PL_op)); | |
1125 | } | |
1d7c1841 | 1126 | else |
29489e7c DM |
1127 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
1128 | "", "", ""); | |
1d7c1841 GS |
1129 | } |
1130 | ||
645c22ef DM |
1131 | /* allocate another arena's worth of NV bodies */ |
1132 | ||
cbe51380 | 1133 | STATIC void |
cea2e8a9 | 1134 | S_more_xnv(pTHX) |
463ee0b2 | 1135 | { |
cac9b346 NC |
1136 | NV* xnv; |
1137 | NV* xnvend; | |
7b2c381c NC |
1138 | void *ptr; |
1139 | New(711, ptr, PERL_ARENA_SIZE/sizeof(NV), NV); | |
1140 | *((void **) ptr) = (void *)PL_xnv_arenaroot; | |
612f20c3 GS |
1141 | PL_xnv_arenaroot = ptr; |
1142 | ||
1143 | xnv = (NV*) ptr; | |
9c17f24a | 1144 | xnvend = &xnv[PERL_ARENA_SIZE / sizeof(NV) - 1]; |
65202027 | 1145 | xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */ |
3280af22 | 1146 | PL_xnv_root = xnv; |
463ee0b2 | 1147 | while (xnv < xnvend) { |
65202027 | 1148 | *(NV**)xnv = (NV*)(xnv + 1); |
463ee0b2 LW |
1149 | xnv++; |
1150 | } | |
cac9b346 NC |
1151 | *(NV**)xnv = 0; |
1152 | } | |
1153 | ||
1154 | /* allocate another arena's worth of struct xpv */ | |
1155 | ||
1156 | STATIC void | |
1157 | S_more_xpv(pTHX) | |
1158 | { | |
59813432 NC |
1159 | xpv_allocated* xpv; |
1160 | xpv_allocated* xpvend; | |
1161 | New(713, xpv, PERL_ARENA_SIZE/sizeof(xpv_allocated), xpv_allocated); | |
1162 | *((xpv_allocated**)xpv) = PL_xpv_arenaroot; | |
cac9b346 NC |
1163 | PL_xpv_arenaroot = xpv; |
1164 | ||
59813432 | 1165 | xpvend = &xpv[PERL_ARENA_SIZE / sizeof(xpv_allocated) - 1]; |
cac9b346 NC |
1166 | PL_xpv_root = ++xpv; |
1167 | while (xpv < xpvend) { | |
59813432 | 1168 | *((xpv_allocated**)xpv) = xpv + 1; |
cac9b346 NC |
1169 | xpv++; |
1170 | } | |
59813432 | 1171 | *((xpv_allocated**)xpv) = 0; |
cac9b346 NC |
1172 | } |
1173 | ||
1174 | /* allocate another arena's worth of struct xpviv */ | |
1175 | ||
1176 | STATIC void | |
1177 | S_more_xpviv(pTHX) | |
1178 | { | |
311a25d9 NC |
1179 | xpviv_allocated* xpviv; |
1180 | xpviv_allocated* xpvivend; | |
1181 | New(713, xpviv, PERL_ARENA_SIZE/sizeof(xpviv_allocated), xpviv_allocated); | |
1182 | *((xpviv_allocated**)xpviv) = PL_xpviv_arenaroot; | |
cac9b346 NC |
1183 | PL_xpviv_arenaroot = xpviv; |
1184 | ||
311a25d9 | 1185 | xpvivend = &xpviv[PERL_ARENA_SIZE / sizeof(xpviv_allocated) - 1]; |
cac9b346 NC |
1186 | PL_xpviv_root = ++xpviv; |
1187 | while (xpviv < xpvivend) { | |
311a25d9 | 1188 | *((xpviv_allocated**)xpviv) = xpviv + 1; |
cac9b346 NC |
1189 | xpviv++; |
1190 | } | |
311a25d9 | 1191 | *((xpviv_allocated**)xpviv) = 0; |
cac9b346 NC |
1192 | } |
1193 | ||
1194 | /* allocate another arena's worth of struct xpvnv */ | |
1195 | ||
1196 | STATIC void | |
1197 | S_more_xpvnv(pTHX) | |
1198 | { | |
1199 | XPVNV* xpvnv; | |
1200 | XPVNV* xpvnvend; | |
1201 | New(715, xpvnv, PERL_ARENA_SIZE/sizeof(XPVNV), XPVNV); | |
7b2c381c | 1202 | *((XPVNV**)xpvnv) = PL_xpvnv_arenaroot; |
cac9b346 NC |
1203 | PL_xpvnv_arenaroot = xpvnv; |
1204 | ||
1205 | xpvnvend = &xpvnv[PERL_ARENA_SIZE / sizeof(XPVNV) - 1]; | |
1206 | PL_xpvnv_root = ++xpvnv; | |
1207 | while (xpvnv < xpvnvend) { | |
7b2c381c | 1208 | *((XPVNV**)xpvnv) = xpvnv + 1; |
cac9b346 NC |
1209 | xpvnv++; |
1210 | } | |
7b2c381c | 1211 | *((XPVNV**)xpvnv) = 0; |
cac9b346 NC |
1212 | } |
1213 | ||
1214 | /* allocate another arena's worth of struct xpvcv */ | |
1215 | ||
1216 | STATIC void | |
1217 | S_more_xpvcv(pTHX) | |
1218 | { | |
1219 | XPVCV* xpvcv; | |
1220 | XPVCV* xpvcvend; | |
1221 | New(716, xpvcv, PERL_ARENA_SIZE/sizeof(XPVCV), XPVCV); | |
7b2c381c | 1222 | *((XPVCV**)xpvcv) = PL_xpvcv_arenaroot; |
cac9b346 NC |
1223 | PL_xpvcv_arenaroot = xpvcv; |
1224 | ||
1225 | xpvcvend = &xpvcv[PERL_ARENA_SIZE / sizeof(XPVCV) - 1]; | |
1226 | PL_xpvcv_root = ++xpvcv; | |
1227 | while (xpvcv < xpvcvend) { | |
7b2c381c | 1228 | *((XPVCV**)xpvcv) = xpvcv + 1; |
cac9b346 NC |
1229 | xpvcv++; |
1230 | } | |
7b2c381c | 1231 | *((XPVCV**)xpvcv) = 0; |
cac9b346 NC |
1232 | } |
1233 | ||
1234 | /* allocate another arena's worth of struct xpvav */ | |
1235 | ||
1236 | STATIC void | |
1237 | S_more_xpvav(pTHX) | |
1238 | { | |
59813432 NC |
1239 | xpvav_allocated* xpvav; |
1240 | xpvav_allocated* xpvavend; | |
1241 | New(717, xpvav, PERL_ARENA_SIZE/sizeof(xpvav_allocated), | |
1242 | xpvav_allocated); | |
1243 | *((xpvav_allocated**)xpvav) = PL_xpvav_arenaroot; | |
cac9b346 NC |
1244 | PL_xpvav_arenaroot = xpvav; |
1245 | ||
59813432 | 1246 | xpvavend = &xpvav[PERL_ARENA_SIZE / sizeof(xpvav_allocated) - 1]; |
cac9b346 NC |
1247 | PL_xpvav_root = ++xpvav; |
1248 | while (xpvav < xpvavend) { | |
59813432 | 1249 | *((xpvav_allocated**)xpvav) = xpvav + 1; |
cac9b346 NC |
1250 | xpvav++; |
1251 | } | |
59813432 | 1252 | *((xpvav_allocated**)xpvav) = 0; |
cac9b346 NC |
1253 | } |
1254 | ||
1255 | /* allocate another arena's worth of struct xpvhv */ | |
1256 | ||
1257 | STATIC void | |
1258 | S_more_xpvhv(pTHX) | |
1259 | { | |
59813432 NC |
1260 | xpvhv_allocated* xpvhv; |
1261 | xpvhv_allocated* xpvhvend; | |
1262 | New(718, xpvhv, PERL_ARENA_SIZE/sizeof(xpvhv_allocated), | |
1263 | xpvhv_allocated); | |
1264 | *((xpvhv_allocated**)xpvhv) = PL_xpvhv_arenaroot; | |
cac9b346 NC |
1265 | PL_xpvhv_arenaroot = xpvhv; |
1266 | ||
59813432 | 1267 | xpvhvend = &xpvhv[PERL_ARENA_SIZE / sizeof(xpvhv_allocated) - 1]; |
cac9b346 NC |
1268 | PL_xpvhv_root = ++xpvhv; |
1269 | while (xpvhv < xpvhvend) { | |
59813432 | 1270 | *((xpvhv_allocated**)xpvhv) = xpvhv + 1; |
cac9b346 NC |
1271 | xpvhv++; |
1272 | } | |
59813432 | 1273 | *((xpvhv_allocated**)xpvhv) = 0; |
cac9b346 NC |
1274 | } |
1275 | ||
1276 | /* allocate another arena's worth of struct xpvmg */ | |
1277 | ||
1278 | STATIC void | |
1279 | S_more_xpvmg(pTHX) | |
1280 | { | |
1281 | XPVMG* xpvmg; | |
1282 | XPVMG* xpvmgend; | |
1283 | New(719, xpvmg, PERL_ARENA_SIZE/sizeof(XPVMG), XPVMG); | |
7b2c381c | 1284 | *((XPVMG**)xpvmg) = PL_xpvmg_arenaroot; |
cac9b346 NC |
1285 | PL_xpvmg_arenaroot = xpvmg; |
1286 | ||
1287 | xpvmgend = &xpvmg[PERL_ARENA_SIZE / sizeof(XPVMG) - 1]; | |
1288 | PL_xpvmg_root = ++xpvmg; | |
1289 | while (xpvmg < xpvmgend) { | |
7b2c381c | 1290 | *((XPVMG**)xpvmg) = xpvmg + 1; |
cac9b346 NC |
1291 | xpvmg++; |
1292 | } | |
7b2c381c | 1293 | *((XPVMG**)xpvmg) = 0; |
cac9b346 NC |
1294 | } |
1295 | ||
1296 | /* allocate another arena's worth of struct xpvgv */ | |
1297 | ||
1298 | STATIC void | |
1299 | S_more_xpvgv(pTHX) | |
1300 | { | |
1301 | XPVGV* xpvgv; | |
1302 | XPVGV* xpvgvend; | |
1303 | New(720, xpvgv, PERL_ARENA_SIZE/sizeof(XPVGV), XPVGV); | |
7b2c381c | 1304 | *((XPVGV**)xpvgv) = PL_xpvgv_arenaroot; |
cac9b346 NC |
1305 | PL_xpvgv_arenaroot = xpvgv; |
1306 | ||
1307 | xpvgvend = &xpvgv[PERL_ARENA_SIZE / sizeof(XPVGV) - 1]; | |
1308 | PL_xpvgv_root = ++xpvgv; | |
1309 | while (xpvgv < xpvgvend) { | |
7b2c381c | 1310 | *((XPVGV**)xpvgv) = xpvgv + 1; |
cac9b346 NC |
1311 | xpvgv++; |
1312 | } | |
7b2c381c | 1313 | *((XPVGV**)xpvgv) = 0; |
cac9b346 NC |
1314 | } |
1315 | ||
1316 | /* allocate another arena's worth of struct xpvlv */ | |
1317 | ||
1318 | STATIC void | |
1319 | S_more_xpvlv(pTHX) | |
1320 | { | |
1321 | XPVLV* xpvlv; | |
1322 | XPVLV* xpvlvend; | |
1323 | New(720, xpvlv, PERL_ARENA_SIZE/sizeof(XPVLV), XPVLV); | |
7b2c381c | 1324 | *((XPVLV**)xpvlv) = PL_xpvlv_arenaroot; |
cac9b346 NC |
1325 | PL_xpvlv_arenaroot = xpvlv; |
1326 | ||
1327 | xpvlvend = &xpvlv[PERL_ARENA_SIZE / sizeof(XPVLV) - 1]; | |
1328 | PL_xpvlv_root = ++xpvlv; | |
1329 | while (xpvlv < xpvlvend) { | |
7b2c381c | 1330 | *((XPVLV**)xpvlv) = xpvlv + 1; |
cac9b346 NC |
1331 | xpvlv++; |
1332 | } | |
7b2c381c | 1333 | *((XPVLV**)xpvlv) = 0; |
cac9b346 NC |
1334 | } |
1335 | ||
1336 | /* allocate another arena's worth of struct xpvbm */ | |
1337 | ||
1338 | STATIC void | |
1339 | S_more_xpvbm(pTHX) | |
1340 | { | |
1341 | XPVBM* xpvbm; | |
1342 | XPVBM* xpvbmend; | |
1343 | New(721, xpvbm, PERL_ARENA_SIZE/sizeof(XPVBM), XPVBM); | |
7b2c381c | 1344 | *((XPVBM**)xpvbm) = PL_xpvbm_arenaroot; |
cac9b346 NC |
1345 | PL_xpvbm_arenaroot = xpvbm; |
1346 | ||
1347 | xpvbmend = &xpvbm[PERL_ARENA_SIZE / sizeof(XPVBM) - 1]; | |
1348 | PL_xpvbm_root = ++xpvbm; | |
1349 | while (xpvbm < xpvbmend) { | |
7b2c381c | 1350 | *((XPVBM**)xpvbm) = xpvbm + 1; |
cac9b346 NC |
1351 | xpvbm++; |
1352 | } | |
7b2c381c | 1353 | *((XPVBM**)xpvbm) = 0; |
cac9b346 | 1354 | } |
612f20c3 | 1355 | |
cac9b346 NC |
1356 | /* grab a new NV body from the free list, allocating more if necessary */ |
1357 | ||
1358 | STATIC XPVNV* | |
1359 | S_new_xnv(pTHX) | |
1360 | { | |
1361 | NV* xnv; | |
1362 | LOCK_SV_MUTEX; | |
1363 | if (!PL_xnv_root) | |
1364 | S_more_xnv(aTHX); | |
1365 | xnv = PL_xnv_root; | |
1366 | PL_xnv_root = *(NV**)xnv; | |
1367 | UNLOCK_SV_MUTEX; | |
1368 | return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv)); | |
1369 | } | |
1370 | ||
1371 | /* return an NV body to the free list */ | |
1372 | ||
1373 | STATIC void | |
1374 | S_del_xnv(pTHX_ XPVNV *p) | |
1375 | { | |
1376 | NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv)); | |
1377 | LOCK_SV_MUTEX; | |
1378 | *(NV**)xnv = PL_xnv_root; | |
1379 | PL_xnv_root = xnv; | |
1380 | UNLOCK_SV_MUTEX; | |
ed6116ce LW |
1381 | } |
1382 | ||
645c22ef DM |
1383 | /* grab a new struct xpv from the free list, allocating more if necessary */ |
1384 | ||
76e3520e | 1385 | STATIC XPV* |
cea2e8a9 | 1386 | S_new_xpv(pTHX) |
463ee0b2 | 1387 | { |
59813432 | 1388 | xpv_allocated* xpv; |
cbe51380 GS |
1389 | LOCK_SV_MUTEX; |
1390 | if (!PL_xpv_root) | |
cac9b346 | 1391 | S_more_xpv(aTHX); |
cbe51380 | 1392 | xpv = PL_xpv_root; |
59813432 | 1393 | PL_xpv_root = *(xpv_allocated**)xpv; |
cbe51380 | 1394 | UNLOCK_SV_MUTEX; |
59813432 NC |
1395 | /* If xpv_allocated is the same structure as XPV then the two OFFSETs |
1396 | sum to zero, and the pointer is unchanged. If the allocated structure | |
1397 | is smaller (no initial IV actually allocated) then the net effect is | |
1398 | to subtract the size of the IV from the pointer, to return a new pointer | |
1399 | as if an initial IV were actually allocated. */ | |
1400 | return (XPV*)((char*)xpv - STRUCT_OFFSET(XPV, xpv_cur) | |
1401 | + STRUCT_OFFSET(xpv_allocated, xpv_cur)); | |
463ee0b2 LW |
1402 | } |
1403 | ||
645c22ef DM |
1404 | /* return a struct xpv to the free list */ |
1405 | ||
76e3520e | 1406 | STATIC void |
cea2e8a9 | 1407 | S_del_xpv(pTHX_ XPV *p) |
463ee0b2 | 1408 | { |
59813432 NC |
1409 | xpv_allocated* xpv |
1410 | = (xpv_allocated*)((char*)(p) + STRUCT_OFFSET(XPV, xpv_cur) | |
1411 | - STRUCT_OFFSET(xpv_allocated, xpv_cur)); | |
cbe51380 | 1412 | LOCK_SV_MUTEX; |
59813432 NC |
1413 | *(xpv_allocated**)xpv = PL_xpv_root; |
1414 | PL_xpv_root = xpv; | |
cbe51380 | 1415 | UNLOCK_SV_MUTEX; |
463ee0b2 LW |
1416 | } |
1417 | ||
645c22ef DM |
1418 | /* grab a new struct xpviv from the free list, allocating more if necessary */ |
1419 | ||
932e9ff9 VB |
1420 | STATIC XPVIV* |
1421 | S_new_xpviv(pTHX) | |
1422 | { | |
311a25d9 | 1423 | xpviv_allocated* xpviv; |
932e9ff9 VB |
1424 | LOCK_SV_MUTEX; |
1425 | if (!PL_xpviv_root) | |
cac9b346 | 1426 | S_more_xpviv(aTHX); |
932e9ff9 | 1427 | xpviv = PL_xpviv_root; |
311a25d9 | 1428 | PL_xpviv_root = *(xpviv_allocated**)xpviv; |
932e9ff9 | 1429 | UNLOCK_SV_MUTEX; |
311a25d9 NC |
1430 | /* If xpviv_allocated is the same structure as XPVIV then the two OFFSETs |
1431 | sum to zero, and the pointer is unchanged. If the allocated structure | |
1432 | is smaller (no initial IV actually allocated) then the net effect is | |
1433 | to subtract the size of the IV from the pointer, to return a new pointer | |
1434 | as if an initial IV were actually allocated. */ | |
1435 | return (XPVIV*)((char*)xpviv - STRUCT_OFFSET(XPVIV, xpv_cur) | |
1436 | + STRUCT_OFFSET(xpviv_allocated, xpv_cur)); | |
932e9ff9 VB |
1437 | } |
1438 | ||
645c22ef DM |
1439 | /* return a struct xpviv to the free list */ |
1440 | ||
932e9ff9 VB |
1441 | STATIC void |
1442 | S_del_xpviv(pTHX_ XPVIV *p) | |
1443 | { | |
311a25d9 NC |
1444 | xpviv_allocated* xpviv |
1445 | = (xpviv_allocated*)((char*)(p) + STRUCT_OFFSET(XPVIV, xpv_cur) | |
1446 | - STRUCT_OFFSET(xpviv_allocated, xpv_cur)); | |
932e9ff9 | 1447 | LOCK_SV_MUTEX; |
311a25d9 NC |
1448 | *(xpviv_allocated**)xpviv = PL_xpviv_root; |
1449 | PL_xpviv_root = xpviv; | |
932e9ff9 VB |
1450 | UNLOCK_SV_MUTEX; |
1451 | } | |
1452 | ||
645c22ef DM |
1453 | /* grab a new struct xpvnv from the free list, allocating more if necessary */ |
1454 | ||
932e9ff9 VB |
1455 | STATIC XPVNV* |
1456 | S_new_xpvnv(pTHX) | |
1457 | { | |
1458 | XPVNV* xpvnv; | |
1459 | LOCK_SV_MUTEX; | |
1460 | if (!PL_xpvnv_root) | |
cac9b346 | 1461 | S_more_xpvnv(aTHX); |
932e9ff9 | 1462 | xpvnv = PL_xpvnv_root; |
7b2c381c | 1463 | PL_xpvnv_root = *(XPVNV**)xpvnv; |
932e9ff9 VB |
1464 | UNLOCK_SV_MUTEX; |
1465 | return xpvnv; | |
1466 | } | |
1467 | ||
645c22ef DM |
1468 | /* return a struct xpvnv to the free list */ |
1469 | ||
932e9ff9 VB |
1470 | STATIC void |
1471 | S_del_xpvnv(pTHX_ XPVNV *p) | |
1472 | { | |
1473 | LOCK_SV_MUTEX; | |
7b2c381c | 1474 | *(XPVNV**)p = PL_xpvnv_root; |
932e9ff9 VB |
1475 | PL_xpvnv_root = p; |
1476 | UNLOCK_SV_MUTEX; | |
1477 | } | |
1478 | ||
645c22ef DM |
1479 | /* grab a new struct xpvcv from the free list, allocating more if necessary */ |
1480 | ||
932e9ff9 VB |
1481 | STATIC XPVCV* |
1482 | S_new_xpvcv(pTHX) | |
1483 | { | |
1484 | XPVCV* xpvcv; | |
1485 | LOCK_SV_MUTEX; | |
1486 | if (!PL_xpvcv_root) | |
cac9b346 | 1487 | S_more_xpvcv(aTHX); |
932e9ff9 | 1488 | xpvcv = PL_xpvcv_root; |
7b2c381c | 1489 | PL_xpvcv_root = *(XPVCV**)xpvcv; |
932e9ff9 VB |
1490 | UNLOCK_SV_MUTEX; |
1491 | return xpvcv; | |
1492 | } | |
1493 | ||
645c22ef DM |
1494 | /* return a struct xpvcv to the free list */ |
1495 | ||
932e9ff9 VB |
1496 | STATIC void |
1497 | S_del_xpvcv(pTHX_ XPVCV *p) | |
1498 | { | |
1499 | LOCK_SV_MUTEX; | |
7b2c381c | 1500 | *(XPVCV**)p = PL_xpvcv_root; |
932e9ff9 VB |
1501 | PL_xpvcv_root = p; |
1502 | UNLOCK_SV_MUTEX; | |
1503 | } | |
1504 | ||
645c22ef DM |
1505 | /* grab a new struct xpvav from the free list, allocating more if necessary */ |
1506 | ||
932e9ff9 VB |
1507 | STATIC XPVAV* |
1508 | S_new_xpvav(pTHX) | |
1509 | { | |
59813432 | 1510 | xpvav_allocated* xpvav; |
932e9ff9 VB |
1511 | LOCK_SV_MUTEX; |
1512 | if (!PL_xpvav_root) | |
cac9b346 | 1513 | S_more_xpvav(aTHX); |
932e9ff9 | 1514 | xpvav = PL_xpvav_root; |
59813432 | 1515 | PL_xpvav_root = *(xpvav_allocated**)xpvav; |
932e9ff9 | 1516 | UNLOCK_SV_MUTEX; |
59813432 NC |
1517 | return (XPVAV*)((char*)xpvav - STRUCT_OFFSET(XPVAV, xav_fill) |
1518 | + STRUCT_OFFSET(xpvav_allocated, xav_fill)); | |
932e9ff9 VB |
1519 | } |
1520 | ||
645c22ef DM |
1521 | /* return a struct xpvav to the free list */ |
1522 | ||
932e9ff9 VB |
1523 | STATIC void |
1524 | S_del_xpvav(pTHX_ XPVAV *p) | |
1525 | { | |
59813432 NC |
1526 | xpvav_allocated* xpvav |
1527 | = (xpvav_allocated*)((char*)(p) + STRUCT_OFFSET(XPVAV, xav_fill) | |
1528 | - STRUCT_OFFSET(xpvav_allocated, xav_fill)); | |
932e9ff9 | 1529 | LOCK_SV_MUTEX; |
59813432 NC |
1530 | *(xpvav_allocated**)xpvav = PL_xpvav_root; |
1531 | PL_xpvav_root = xpvav; | |
932e9ff9 VB |
1532 | UNLOCK_SV_MUTEX; |
1533 | } | |
1534 | ||
645c22ef DM |
1535 | /* grab a new struct xpvhv from the free list, allocating more if necessary */ |
1536 | ||
932e9ff9 VB |
1537 | STATIC XPVHV* |
1538 | S_new_xpvhv(pTHX) | |
1539 | { | |
59813432 | 1540 | xpvhv_allocated* xpvhv; |
932e9ff9 VB |
1541 | LOCK_SV_MUTEX; |
1542 | if (!PL_xpvhv_root) | |
cac9b346 | 1543 | S_more_xpvhv(aTHX); |
932e9ff9 | 1544 | xpvhv = PL_xpvhv_root; |
59813432 | 1545 | PL_xpvhv_root = *(xpvhv_allocated**)xpvhv; |
932e9ff9 | 1546 | UNLOCK_SV_MUTEX; |
59813432 NC |
1547 | return (XPVHV*)((char*)xpvhv - STRUCT_OFFSET(XPVHV, xhv_fill) |
1548 | + STRUCT_OFFSET(xpvhv_allocated, xhv_fill)); | |
932e9ff9 VB |
1549 | } |
1550 | ||
645c22ef DM |
1551 | /* return a struct xpvhv to the free list */ |
1552 | ||
932e9ff9 VB |
1553 | STATIC void |
1554 | S_del_xpvhv(pTHX_ XPVHV *p) | |
1555 | { | |
59813432 NC |
1556 | xpvhv_allocated* xpvhv |
1557 | = (xpvhv_allocated*)((char*)(p) + STRUCT_OFFSET(XPVHV, xhv_fill) | |
1558 | - STRUCT_OFFSET(xpvhv_allocated, xhv_fill)); | |
932e9ff9 | 1559 | LOCK_SV_MUTEX; |
59813432 NC |
1560 | *(xpvhv_allocated**)xpvhv = PL_xpvhv_root; |
1561 | PL_xpvhv_root = xpvhv; | |
932e9ff9 VB |
1562 | UNLOCK_SV_MUTEX; |
1563 | } | |
1564 | ||
645c22ef DM |
1565 | /* grab a new struct xpvmg from the free list, allocating more if necessary */ |
1566 | ||
932e9ff9 VB |
1567 | STATIC XPVMG* |
1568 | S_new_xpvmg(pTHX) | |
1569 | { | |
1570 | XPVMG* xpvmg; | |
1571 | LOCK_SV_MUTEX; | |
1572 | if (!PL_xpvmg_root) | |
cac9b346 | 1573 | S_more_xpvmg(aTHX); |
932e9ff9 | 1574 | xpvmg = PL_xpvmg_root; |
7b2c381c | 1575 | PL_xpvmg_root = *(XPVMG**)xpvmg; |
932e9ff9 VB |
1576 | UNLOCK_SV_MUTEX; |
1577 | return xpvmg; | |
1578 | } | |
1579 | ||
645c22ef DM |
1580 | /* return a struct xpvmg to the free list */ |
1581 | ||
932e9ff9 VB |
1582 | STATIC void |
1583 | S_del_xpvmg(pTHX_ XPVMG *p) | |
1584 | { | |
1585 | LOCK_SV_MUTEX; | |
7b2c381c | 1586 | *(XPVMG**)p = PL_xpvmg_root; |
932e9ff9 VB |
1587 | PL_xpvmg_root = p; |
1588 | UNLOCK_SV_MUTEX; | |
1589 | } | |
1590 | ||
727879eb NC |
1591 | /* grab a new struct xpvgv from the free list, allocating more if necessary */ |
1592 | ||
1593 | STATIC XPVGV* | |
1594 | S_new_xpvgv(pTHX) | |
1595 | { | |
1596 | XPVGV* xpvgv; | |
1597 | LOCK_SV_MUTEX; | |
1598 | if (!PL_xpvgv_root) | |
cac9b346 | 1599 | S_more_xpvgv(aTHX); |
727879eb | 1600 | xpvgv = PL_xpvgv_root; |
7b2c381c | 1601 | PL_xpvgv_root = *(XPVGV**)xpvgv; |
727879eb NC |
1602 | UNLOCK_SV_MUTEX; |
1603 | return xpvgv; | |
1604 | } | |
1605 | ||
1606 | /* return a struct xpvgv to the free list */ | |
1607 | ||
1608 | STATIC void | |
1609 | S_del_xpvgv(pTHX_ XPVGV *p) | |
1610 | { | |
1611 | LOCK_SV_MUTEX; | |
7b2c381c | 1612 | *(XPVGV**)p = PL_xpvgv_root; |
727879eb NC |
1613 | PL_xpvgv_root = p; |
1614 | UNLOCK_SV_MUTEX; | |
1615 | } | |
1616 | ||
645c22ef DM |
1617 | /* grab a new struct xpvlv from the free list, allocating more if necessary */ |
1618 | ||
932e9ff9 VB |
1619 | STATIC XPVLV* |
1620 | S_new_xpvlv(pTHX) | |
1621 | { | |
1622 | XPVLV* xpvlv; | |
1623 | LOCK_SV_MUTEX; | |
1624 | if (!PL_xpvlv_root) | |
cac9b346 | 1625 | S_more_xpvlv(aTHX); |
932e9ff9 | 1626 | xpvlv = PL_xpvlv_root; |
7b2c381c | 1627 | PL_xpvlv_root = *(XPVLV**)xpvlv; |
932e9ff9 VB |
1628 | UNLOCK_SV_MUTEX; |
1629 | return xpvlv; | |
1630 | } | |
1631 | ||
645c22ef DM |
1632 | /* return a struct xpvlv to the free list */ |
1633 | ||
932e9ff9 VB |
1634 | STATIC void |
1635 | S_del_xpvlv(pTHX_ XPVLV *p) | |
1636 | { | |
1637 | LOCK_SV_MUTEX; | |
7b2c381c | 1638 | *(XPVLV**)p = PL_xpvlv_root; |
932e9ff9 VB |
1639 | PL_xpvlv_root = p; |
1640 | UNLOCK_SV_MUTEX; | |
1641 | } | |
1642 | ||
645c22ef DM |
1643 | /* grab a new struct xpvbm from the free list, allocating more if necessary */ |
1644 | ||
932e9ff9 VB |
1645 | STATIC XPVBM* |
1646 | S_new_xpvbm(pTHX) | |
1647 | { | |
1648 | XPVBM* xpvbm; | |
1649 | LOCK_SV_MUTEX; | |
1650 | if (!PL_xpvbm_root) | |
cac9b346 | 1651 | S_more_xpvbm(aTHX); |
932e9ff9 | 1652 | xpvbm = PL_xpvbm_root; |
7b2c381c | 1653 | PL_xpvbm_root = *(XPVBM**)xpvbm; |
932e9ff9 VB |
1654 | UNLOCK_SV_MUTEX; |
1655 | return xpvbm; | |
1656 | } | |
1657 | ||
645c22ef DM |
1658 | /* return a struct xpvbm to the free list */ |
1659 | ||
932e9ff9 VB |
1660 | STATIC void |
1661 | S_del_xpvbm(pTHX_ XPVBM *p) | |
1662 | { | |
1663 | LOCK_SV_MUTEX; | |
7b2c381c | 1664 | *(XPVBM**)p = PL_xpvbm_root; |
932e9ff9 VB |
1665 | PL_xpvbm_root = p; |
1666 | UNLOCK_SV_MUTEX; | |
1667 | } | |
1668 | ||
7bab3ede MB |
1669 | #define my_safemalloc(s) (void*)safemalloc(s) |
1670 | #define my_safefree(p) safefree((char*)p) | |
463ee0b2 | 1671 | |
d33b2eba | 1672 | #ifdef PURIFY |
463ee0b2 | 1673 | |
d33b2eba GS |
1674 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
1675 | #define del_XNV(p) my_safefree(p) | |
463ee0b2 | 1676 | |
d33b2eba GS |
1677 | #define new_XPV() my_safemalloc(sizeof(XPV)) |
1678 | #define del_XPV(p) my_safefree(p) | |
9b94d1dd | 1679 | |
d33b2eba GS |
1680 | #define new_XPVIV() my_safemalloc(sizeof(XPVIV)) |
1681 | #define del_XPVIV(p) my_safefree(p) | |
932e9ff9 | 1682 | |
d33b2eba GS |
1683 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
1684 | #define del_XPVNV(p) my_safefree(p) | |
932e9ff9 | 1685 | |
d33b2eba GS |
1686 | #define new_XPVCV() my_safemalloc(sizeof(XPVCV)) |
1687 | #define del_XPVCV(p) my_safefree(p) | |
932e9ff9 | 1688 | |
d33b2eba GS |
1689 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1690 | #define del_XPVAV(p) my_safefree(p) | |
1691 | ||
1692 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) | |
1693 | #define del_XPVHV(p) my_safefree(p) | |
1c846c1f | 1694 | |
d33b2eba GS |
1695 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1696 | #define del_XPVMG(p) my_safefree(p) | |
1697 | ||
727879eb NC |
1698 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1699 | #define del_XPVGV(p) my_safefree(p) | |
1700 | ||
d33b2eba GS |
1701 | #define new_XPVLV() my_safemalloc(sizeof(XPVLV)) |
1702 | #define del_XPVLV(p) my_safefree(p) | |
1703 | ||
1704 | #define new_XPVBM() my_safemalloc(sizeof(XPVBM)) | |
1705 | #define del_XPVBM(p) my_safefree(p) | |
1706 | ||
1707 | #else /* !PURIFY */ | |
1708 | ||
d33b2eba GS |
1709 | #define new_XNV() (void*)new_xnv() |
1710 | #define del_XNV(p) del_xnv((XPVNV*) p) | |
9b94d1dd | 1711 | |
d33b2eba GS |
1712 | #define new_XPV() (void*)new_xpv() |
1713 | #define del_XPV(p) del_xpv((XPV *)p) | |
1714 | ||
1715 | #define new_XPVIV() (void*)new_xpviv() | |
1716 | #define del_XPVIV(p) del_xpviv((XPVIV *)p) | |
1717 | ||
1718 | #define new_XPVNV() (void*)new_xpvnv() | |
1719 | #define del_XPVNV(p) del_xpvnv((XPVNV *)p) | |
1720 | ||
1721 | #define new_XPVCV() (void*)new_xpvcv() | |
1722 | #define del_XPVCV(p) del_xpvcv((XPVCV *)p) | |
1723 | ||
1724 | #define new_XPVAV() (void*)new_xpvav() | |
1725 | #define del_XPVAV(p) del_xpvav((XPVAV *)p) | |
1726 | ||
1727 | #define new_XPVHV() (void*)new_xpvhv() | |
1728 | #define del_XPVHV(p) del_xpvhv((XPVHV *)p) | |
1c846c1f | 1729 | |
d33b2eba GS |
1730 | #define new_XPVMG() (void*)new_xpvmg() |
1731 | #define del_XPVMG(p) del_xpvmg((XPVMG *)p) | |
1732 | ||
727879eb NC |
1733 | #define new_XPVGV() (void*)new_xpvgv() |
1734 | #define del_XPVGV(p) del_xpvgv((XPVGV *)p) | |
1735 | ||
d33b2eba GS |
1736 | #define new_XPVLV() (void*)new_xpvlv() |
1737 | #define del_XPVLV(p) del_xpvlv((XPVLV *)p) | |
1738 | ||
1739 | #define new_XPVBM() (void*)new_xpvbm() | |
1740 | #define del_XPVBM(p) del_xpvbm((XPVBM *)p) | |
1741 | ||
1742 | #endif /* PURIFY */ | |
9b94d1dd | 1743 | |
d33b2eba GS |
1744 | #define new_XPVFM() my_safemalloc(sizeof(XPVFM)) |
1745 | #define del_XPVFM(p) my_safefree(p) | |
1c846c1f | 1746 | |
d33b2eba GS |
1747 | #define new_XPVIO() my_safemalloc(sizeof(XPVIO)) |
1748 | #define del_XPVIO(p) my_safefree(p) | |
8990e307 | 1749 | |
954c1994 GS |
1750 | /* |
1751 | =for apidoc sv_upgrade | |
1752 | ||
ff276b08 | 1753 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 1754 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 1755 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
1756 | |
1757 | =cut | |
1758 | */ | |
1759 | ||
79072805 | 1760 | bool |
864dbfa3 | 1761 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt) |
79072805 | 1762 | { |
e763e3dc | 1763 | |
d2e56290 NC |
1764 | char* pv; |
1765 | U32 cur; | |
1766 | U32 len; | |
1767 | IV iv; | |
1768 | NV nv; | |
1769 | MAGIC* magic; | |
1770 | HV* stash; | |
79072805 | 1771 | |
765f542d NC |
1772 | if (mt != SVt_PV && SvIsCOW(sv)) { |
1773 | sv_force_normal_flags(sv, 0); | |
f130fd45 NIS |
1774 | } |
1775 | ||
79072805 LW |
1776 | if (SvTYPE(sv) == mt) |
1777 | return TRUE; | |
1778 | ||
d2e56290 NC |
1779 | pv = NULL; |
1780 | cur = 0; | |
1781 | len = 0; | |
1782 | iv = 0; | |
1783 | nv = 0.0; | |
1784 | magic = NULL; | |
1785 | stash = Nullhv; | |
1786 | ||
79072805 LW |
1787 | switch (SvTYPE(sv)) { |
1788 | case SVt_NULL: | |
79072805 | 1789 | break; |
79072805 | 1790 | case SVt_IV: |
463ee0b2 | 1791 | iv = SvIVX(sv); |
ed6116ce | 1792 | if (mt == SVt_NV) |
463ee0b2 | 1793 | mt = SVt_PVNV; |
ed6116ce LW |
1794 | else if (mt < SVt_PVIV) |
1795 | mt = SVt_PVIV; | |
79072805 LW |
1796 | break; |
1797 | case SVt_NV: | |
463ee0b2 | 1798 | nv = SvNVX(sv); |
79072805 | 1799 | del_XNV(SvANY(sv)); |
ed6116ce | 1800 | if (mt < SVt_PVNV) |
79072805 LW |
1801 | mt = SVt_PVNV; |
1802 | break; | |
ed6116ce LW |
1803 | case SVt_RV: |
1804 | pv = (char*)SvRV(sv); | |
ed6116ce | 1805 | break; |
79072805 | 1806 | case SVt_PV: |
4d84ee25 | 1807 | pv = SvPVX_mutable(sv); |
79072805 LW |
1808 | cur = SvCUR(sv); |
1809 | len = SvLEN(sv); | |
79072805 | 1810 | del_XPV(SvANY(sv)); |
748a9306 LW |
1811 | if (mt <= SVt_IV) |
1812 | mt = SVt_PVIV; | |
1813 | else if (mt == SVt_NV) | |
1814 | mt = SVt_PVNV; | |
79072805 LW |
1815 | break; |
1816 | case SVt_PVIV: | |
4d84ee25 | 1817 | pv = SvPVX_mutable(sv); |
79072805 LW |
1818 | cur = SvCUR(sv); |
1819 | len = SvLEN(sv); | |
463ee0b2 | 1820 | iv = SvIVX(sv); |
79072805 LW |
1821 | del_XPVIV(SvANY(sv)); |
1822 | break; | |
1823 | case SVt_PVNV: | |
4d84ee25 | 1824 | pv = SvPVX_mutable(sv); |
79072805 LW |
1825 | cur = SvCUR(sv); |
1826 | len = SvLEN(sv); | |
463ee0b2 LW |
1827 | iv = SvIVX(sv); |
1828 | nv = SvNVX(sv); | |
79072805 LW |
1829 | del_XPVNV(SvANY(sv)); |
1830 | break; | |
1831 | case SVt_PVMG: | |
0ec50a73 NC |
1832 | /* Because the XPVMG of PL_mess_sv isn't allocated from the arena, |
1833 | there's no way that it can be safely upgraded, because perl.c | |
1834 | expects to Safefree(SvANY(PL_mess_sv)) */ | |
1835 | assert(sv != PL_mess_sv); | |
bce8f412 NC |
1836 | /* This flag bit is used to mean other things in other scalar types. |
1837 | Given that it only has meaning inside the pad, it shouldn't be set | |
1838 | on anything that can get upgraded. */ | |
1839 | assert((SvFLAGS(sv) & SVpad_TYPED) == 0); | |
4d84ee25 | 1840 | pv = SvPVX_mutable(sv); |
79072805 LW |
1841 | cur = SvCUR(sv); |
1842 | len = SvLEN(sv); | |
463ee0b2 LW |
1843 | iv = SvIVX(sv); |
1844 | nv = SvNVX(sv); | |
79072805 LW |
1845 | magic = SvMAGIC(sv); |
1846 | stash = SvSTASH(sv); | |
1847 | del_XPVMG(SvANY(sv)); | |
1848 | break; | |
1849 | default: | |
cea2e8a9 | 1850 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); |
79072805 LW |
1851 | } |
1852 | ||
ffb05e06 NC |
1853 | SvFLAGS(sv) &= ~SVTYPEMASK; |
1854 | SvFLAGS(sv) |= mt; | |
1855 | ||
79072805 LW |
1856 | switch (mt) { |
1857 | case SVt_NULL: | |
cea2e8a9 | 1858 | Perl_croak(aTHX_ "Can't upgrade to undef"); |
79072805 | 1859 | case SVt_IV: |
339049b0 | 1860 | SvANY(sv) = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
45977657 | 1861 | SvIV_set(sv, iv); |
79072805 LW |
1862 | break; |
1863 | case SVt_NV: | |
1864 | SvANY(sv) = new_XNV(); | |
9d6ce603 | 1865 | SvNV_set(sv, nv); |
79072805 | 1866 | break; |
ed6116ce | 1867 | case SVt_RV: |
339049b0 | 1868 | SvANY(sv) = &sv->sv_u.svu_rv; |
b162af07 | 1869 | SvRV_set(sv, (SV*)pv); |
ed6116ce | 1870 | break; |
79072805 LW |
1871 | case SVt_PVHV: |
1872 | SvANY(sv) = new_XPVHV(); | |
463ee0b2 LW |
1873 | HvFILL(sv) = 0; |
1874 | HvMAX(sv) = 0; | |
8aacddc1 | 1875 | HvTOTALKEYS(sv) = 0; |
bd4b1eb5 NC |
1876 | |
1877 | /* Fall through... */ | |
1878 | if (0) { | |
1879 | case SVt_PVAV: | |
1880 | SvANY(sv) = new_XPVAV(); | |
1881 | AvMAX(sv) = -1; | |
1882 | AvFILLp(sv) = -1; | |
1883 | AvALLOC(sv) = 0; | |
11ca45c0 | 1884 | AvREAL_only(sv); |
bd4b1eb5 NC |
1885 | } |
1886 | /* to here. */ | |
c2bfdfaf NC |
1887 | /* XXX? Only SVt_NULL is ever upgraded to AV or HV? */ |
1888 | assert(!pv); | |
8bd4d4c5 NC |
1889 | /* FIXME. Should be able to remove all this if()... if the above |
1890 | assertion is genuinely always true. */ | |
1891 | if(SvOOK(sv)) { | |
1892 | pv -= iv; | |
1893 | SvFLAGS(sv) &= ~SVf_OOK; | |
1894 | } | |
1895 | Safefree(pv); | |
bd4b1eb5 | 1896 | SvPV_set(sv, (char*)0); |
b162af07 SP |
1897 | SvMAGIC_set(sv, magic); |
1898 | SvSTASH_set(sv, stash); | |
79072805 | 1899 | break; |
bd4b1eb5 NC |
1900 | |
1901 | case SVt_PVIO: | |
1902 | SvANY(sv) = new_XPVIO(); | |
1903 | Zero(SvANY(sv), 1, XPVIO); | |
1904 | IoPAGE_LEN(sv) = 60; | |
1905 | goto set_magic_common; | |
1906 | case SVt_PVFM: | |
1907 | SvANY(sv) = new_XPVFM(); | |
1908 | Zero(SvANY(sv), 1, XPVFM); | |
1909 | goto set_magic_common; | |
1910 | case SVt_PVBM: | |
1911 | SvANY(sv) = new_XPVBM(); | |
1912 | BmRARE(sv) = 0; | |
1913 | BmUSEFUL(sv) = 0; | |
1914 | BmPREVIOUS(sv) = 0; | |
1915 | goto set_magic_common; | |
1916 | case SVt_PVGV: | |
1917 | SvANY(sv) = new_XPVGV(); | |
1918 | GvGP(sv) = 0; | |
1919 | GvNAME(sv) = 0; | |
1920 | GvNAMELEN(sv) = 0; | |
1921 | GvSTASH(sv) = 0; | |
1922 | GvFLAGS(sv) = 0; | |
1923 | goto set_magic_common; | |
79072805 LW |
1924 | case SVt_PVCV: |
1925 | SvANY(sv) = new_XPVCV(); | |
748a9306 | 1926 | Zero(SvANY(sv), 1, XPVCV); |
bd4b1eb5 NC |
1927 | goto set_magic_common; |
1928 | case SVt_PVLV: | |
1929 | SvANY(sv) = new_XPVLV(); | |
1930 | LvTARGOFF(sv) = 0; | |
1931 | LvTARGLEN(sv) = 0; | |
1932 | LvTARG(sv) = 0; | |
1933 | LvTYPE(sv) = 0; | |
93a17b20 | 1934 | GvGP(sv) = 0; |
79072805 LW |
1935 | GvNAME(sv) = 0; |
1936 | GvNAMELEN(sv) = 0; | |
1937 | GvSTASH(sv) = 0; | |
a5f75d66 | 1938 | GvFLAGS(sv) = 0; |
bd4b1eb5 NC |
1939 | /* Fall through. */ |
1940 | if (0) { | |
1941 | case SVt_PVMG: | |
1942 | SvANY(sv) = new_XPVMG(); | |
1943 | } | |
1944 | set_magic_common: | |
b162af07 SP |
1945 | SvMAGIC_set(sv, magic); |
1946 | SvSTASH_set(sv, stash); | |
bd4b1eb5 NC |
1947 | /* Fall through. */ |
1948 | if (0) { | |
1949 | case SVt_PVNV: | |
1950 | SvANY(sv) = new_XPVNV(); | |
1951 | } | |
9d6ce603 | 1952 | SvNV_set(sv, nv); |
bd4b1eb5 NC |
1953 | /* Fall through. */ |
1954 | if (0) { | |
1955 | case SVt_PVIV: | |
1956 | SvANY(sv) = new_XPVIV(); | |
1957 | if (SvNIOK(sv)) | |
1958 | (void)SvIOK_on(sv); | |
1959 | SvNOK_off(sv); | |
1960 | } | |
1961 | SvIV_set(sv, iv); | |
1962 | /* Fall through. */ | |
1963 | if (0) { | |
1964 | case SVt_PV: | |
1965 | SvANY(sv) = new_XPV(); | |
1966 | } | |
f880fe2f | 1967 | SvPV_set(sv, pv); |
b162af07 SP |
1968 | SvCUR_set(sv, cur); |
1969 | SvLEN_set(sv, len); | |
8990e307 LW |
1970 | break; |
1971 | } | |
79072805 LW |
1972 | return TRUE; |
1973 | } | |
1974 | ||
645c22ef DM |
1975 | /* |
1976 | =for apidoc sv_backoff | |
1977 | ||
1978 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
1979 | wrapper instead. | |
1980 | ||
1981 | =cut | |
1982 | */ | |
1983 | ||
79072805 | 1984 | int |
864dbfa3 | 1985 | Perl_sv_backoff(pTHX_ register SV *sv) |
79072805 LW |
1986 | { |
1987 | assert(SvOOK(sv)); | |
b79f7545 NC |
1988 | assert(SvTYPE(sv) != SVt_PVHV); |
1989 | assert(SvTYPE(sv) != SVt_PVAV); | |
463ee0b2 | 1990 | if (SvIVX(sv)) { |
3f7c398e | 1991 | const char *s = SvPVX_const(sv); |
b162af07 | 1992 | SvLEN_set(sv, SvLEN(sv) + SvIVX(sv)); |
f880fe2f | 1993 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); |
79072805 | 1994 | SvIV_set(sv, 0); |
463ee0b2 | 1995 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
79072805 LW |
1996 | } |
1997 | SvFLAGS(sv) &= ~SVf_OOK; | |
a0d0e21e | 1998 | return 0; |
79072805 LW |
1999 | } |
2000 | ||
954c1994 GS |
2001 | /* |
2002 | =for apidoc sv_grow | |
2003 | ||
645c22ef DM |
2004 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
2005 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
2006 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
2007 | |
2008 | =cut | |
2009 | */ | |
2010 | ||
79072805 | 2011 | char * |
864dbfa3 | 2012 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) |
79072805 LW |
2013 | { |
2014 | register char *s; | |
2015 | ||
55497cff | 2016 | #ifdef HAS_64K_LIMIT |
79072805 | 2017 | if (newlen >= 0x10000) { |
1d7c1841 GS |
2018 | PerlIO_printf(Perl_debug_log, |
2019 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
79072805 LW |
2020 | my_exit(1); |
2021 | } | |
55497cff | 2022 | #endif /* HAS_64K_LIMIT */ |
a0d0e21e LW |
2023 | if (SvROK(sv)) |
2024 | sv_unref(sv); | |
79072805 LW |
2025 | if (SvTYPE(sv) < SVt_PV) { |
2026 | sv_upgrade(sv, SVt_PV); | |
463ee0b2 | 2027 | s = SvPVX(sv); |
79072805 LW |
2028 | } |
2029 | else if (SvOOK(sv)) { /* pv is offset? */ | |
2030 | sv_backoff(sv); | |
463ee0b2 | 2031 | s = SvPVX(sv); |
79072805 LW |
2032 | if (newlen > SvLEN(sv)) |
2033 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
c6f8c383 GA |
2034 | #ifdef HAS_64K_LIMIT |
2035 | if (newlen >= 0x10000) | |
2036 | newlen = 0xFFFF; | |
2037 | #endif | |
79072805 | 2038 | } |
bc44a8a2 | 2039 | else |
4d84ee25 | 2040 | s = SvPVX_mutable(sv); |
54f0641b | 2041 | |
79072805 | 2042 | if (newlen > SvLEN(sv)) { /* need more room? */ |
7a9b70e9 | 2043 | newlen = PERL_STRLEN_ROUNDUP(newlen); |
8d6dde3e | 2044 | if (SvLEN(sv) && s) { |
7bab3ede | 2045 | #ifdef MYMALLOC |
a3b680e6 | 2046 | const STRLEN l = malloced_size((void*)SvPVX(sv)); |
8d6dde3e IZ |
2047 | if (newlen <= l) { |
2048 | SvLEN_set(sv, l); | |
2049 | return s; | |
2050 | } else | |
c70c8a0a | 2051 | #endif |
1936d2a7 | 2052 | s = saferealloc(s, newlen); |
8d6dde3e | 2053 | } |
bfed75c6 | 2054 | else { |
1936d2a7 | 2055 | s = safemalloc(newlen); |
3f7c398e SP |
2056 | if (SvPVX_const(sv) && SvCUR(sv)) { |
2057 | Move(SvPVX_const(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); | |
40565179 | 2058 | } |
4e83176d | 2059 | } |
79072805 | 2060 | SvPV_set(sv, s); |
e1ec3a88 | 2061 | SvLEN_set(sv, newlen); |
79072805 LW |
2062 | } |
2063 | return s; | |
2064 | } | |
2065 | ||
954c1994 GS |
2066 | /* |
2067 | =for apidoc sv_setiv | |
2068 | ||
645c22ef DM |
2069 | Copies an integer into the given SV, upgrading first if necessary. |
2070 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
2071 | |
2072 | =cut | |
2073 | */ | |
2074 | ||
79072805 | 2075 | void |
864dbfa3 | 2076 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) |
79072805 | 2077 | { |
765f542d | 2078 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 LW |
2079 | switch (SvTYPE(sv)) { |
2080 | case SVt_NULL: | |
79072805 | 2081 | sv_upgrade(sv, SVt_IV); |
463ee0b2 LW |
2082 | break; |
2083 | case SVt_NV: | |
2084 | sv_upgrade(sv, SVt_PVNV); | |
2085 | break; | |
ed6116ce | 2086 | case SVt_RV: |
463ee0b2 | 2087 | case SVt_PV: |
79072805 | 2088 | sv_upgrade(sv, SVt_PVIV); |
463ee0b2 | 2089 | break; |
a0d0e21e LW |
2090 | |
2091 | case SVt_PVGV: | |
a0d0e21e LW |
2092 | case SVt_PVAV: |
2093 | case SVt_PVHV: | |
2094 | case SVt_PVCV: | |
2095 | case SVt_PVFM: | |
2096 | case SVt_PVIO: | |
411caa50 | 2097 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), |
53e06cf0 | 2098 | OP_DESC(PL_op)); |
463ee0b2 | 2099 | } |
a0d0e21e | 2100 | (void)SvIOK_only(sv); /* validate number */ |
45977657 | 2101 | SvIV_set(sv, i); |
463ee0b2 | 2102 | SvTAINT(sv); |
79072805 LW |
2103 | } |
2104 | ||
954c1994 GS |
2105 | /* |
2106 | =for apidoc sv_setiv_mg | |
2107 | ||
2108 | Like C<sv_setiv>, but also handles 'set' magic. | |
2109 | ||
2110 | =cut | |
2111 | */ | |
2112 | ||
79072805 | 2113 | void |
864dbfa3 | 2114 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) |
ef50df4b GS |
2115 | { |
2116 | sv_setiv(sv,i); | |
2117 | SvSETMAGIC(sv); | |
2118 | } | |
2119 | ||
954c1994 GS |
2120 | /* |
2121 | =for apidoc sv_setuv | |
2122 | ||
645c22ef DM |
2123 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
2124 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
2125 | |
2126 | =cut | |
2127 | */ | |
2128 | ||
ef50df4b | 2129 | void |
864dbfa3 | 2130 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) |
55497cff | 2131 | { |
55ada374 NC |
2132 | /* With these two if statements: |
2133 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 2134 | |
55ada374 NC |
2135 | without |
2136 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 2137 | |
55ada374 NC |
2138 | If you wish to remove them, please benchmark to see what the effect is |
2139 | */ | |
28e5dec8 JH |
2140 | if (u <= (UV)IV_MAX) { |
2141 | sv_setiv(sv, (IV)u); | |
2142 | return; | |
2143 | } | |
25da4f38 IZ |
2144 | sv_setiv(sv, 0); |
2145 | SvIsUV_on(sv); | |
607fa7f2 | 2146 | SvUV_set(sv, u); |
55497cff | 2147 | } |
2148 | ||
954c1994 GS |
2149 | /* |
2150 | =for apidoc sv_setuv_mg | |
2151 | ||
2152 | Like C<sv_setuv>, but also handles 'set' magic. | |
2153 | ||
2154 | =cut | |
2155 | */ | |
2156 | ||
55497cff | 2157 | void |
864dbfa3 | 2158 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) |
ef50df4b | 2159 | { |
55ada374 NC |
2160 | /* With these two if statements: |
2161 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 2162 | |
55ada374 NC |
2163 | without |
2164 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 2165 | |
55ada374 NC |
2166 | If you wish to remove them, please benchmark to see what the effect is |
2167 | */ | |
28e5dec8 JH |
2168 | if (u <= (UV)IV_MAX) { |
2169 | sv_setiv(sv, (IV)u); | |
2170 | } else { | |
2171 | sv_setiv(sv, 0); | |
2172 | SvIsUV_on(sv); | |
2173 | sv_setuv(sv,u); | |
2174 | } | |
ef50df4b GS |
2175 | SvSETMAGIC(sv); |
2176 | } | |
2177 | ||
954c1994 GS |
2178 | /* |
2179 | =for apidoc sv_setnv | |
2180 | ||
645c22ef DM |
2181 | Copies a double into the given SV, upgrading first if necessary. |
2182 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
2183 | |
2184 | =cut | |
2185 | */ | |
2186 | ||
ef50df4b | 2187 | void |
65202027 | 2188 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 2189 | { |
765f542d | 2190 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
a0d0e21e LW |
2191 | switch (SvTYPE(sv)) { |
2192 | case SVt_NULL: | |
2193 | case SVt_IV: | |
79072805 | 2194 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2195 | break; |
a0d0e21e LW |
2196 | case SVt_RV: |
2197 | case SVt_PV: | |
2198 | case SVt_PVIV: | |
79072805 | 2199 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e | 2200 | break; |
827b7e14 | 2201 | |
a0d0e21e | 2202 | case SVt_PVGV: |
a0d0e21e LW |
2203 | case SVt_PVAV: |
2204 | case SVt_PVHV: | |
2205 | case SVt_PVCV: | |
2206 | case SVt_PVFM: | |
2207 | case SVt_PVIO: | |
411caa50 | 2208 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), |
53e06cf0 | 2209 | OP_NAME(PL_op)); |
79072805 | 2210 | } |
9d6ce603 | 2211 | SvNV_set(sv, num); |
a0d0e21e | 2212 | (void)SvNOK_only(sv); /* validate number */ |
463ee0b2 | 2213 | SvTAINT(sv); |
79072805 LW |
2214 | } |
2215 | ||
954c1994 GS |
2216 | /* |
2217 | =for apidoc sv_setnv_mg | |
2218 | ||
2219 | Like C<sv_setnv>, but also handles 'set' magic. | |
2220 | ||
2221 | =cut | |
2222 | */ | |
2223 | ||
ef50df4b | 2224 | void |
65202027 | 2225 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) |
ef50df4b GS |
2226 | { |
2227 | sv_setnv(sv,num); | |
2228 | SvSETMAGIC(sv); | |
2229 | } | |
2230 | ||
645c22ef DM |
2231 | /* Print an "isn't numeric" warning, using a cleaned-up, |
2232 | * printable version of the offending string | |
2233 | */ | |
2234 | ||
76e3520e | 2235 | STATIC void |
cea2e8a9 | 2236 | S_not_a_number(pTHX_ SV *sv) |
a0d0e21e | 2237 | { |
94463019 JH |
2238 | SV *dsv; |
2239 | char tmpbuf[64]; | |
2240 | char *pv; | |
2241 | ||
2242 | if (DO_UTF8(sv)) { | |
2243 | dsv = sv_2mortal(newSVpv("", 0)); | |
2244 | pv = sv_uni_display(dsv, sv, 10, 0); | |
2245 | } else { | |
2246 | char *d = tmpbuf; | |
2247 | char *limit = tmpbuf + sizeof(tmpbuf) - 8; | |
2248 | /* each *s can expand to 4 chars + "...\0", | |
2249 | i.e. need room for 8 chars */ | |
ecdeb87c | 2250 | |
e62f0680 NC |
2251 | const char *s, *end; |
2252 | for (s = SvPVX_const(sv), end = s + SvCUR(sv); s < end && d < limit; | |
2253 | s++) { | |
94463019 JH |
2254 | int ch = *s & 0xFF; |
2255 | if (ch & 128 && !isPRINT_LC(ch)) { | |
2256 | *d++ = 'M'; | |
2257 | *d++ = '-'; | |
2258 | ch &= 127; | |
2259 | } | |
2260 | if (ch == '\n') { | |
2261 | *d++ = '\\'; | |
2262 | *d++ = 'n'; | |
2263 | } | |
2264 | else if (ch == '\r') { | |
2265 | *d++ = '\\'; | |
2266 | *d++ = 'r'; | |
2267 | } | |
2268 | else if (ch == '\f') { | |
2269 | *d++ = '\\'; | |
2270 | *d++ = 'f'; | |
2271 | } | |
2272 | else if (ch == '\\') { | |
2273 | *d++ = '\\'; | |
2274 | *d++ = '\\'; | |
2275 | } | |
2276 | else if (ch == '\0') { | |
2277 | *d++ = '\\'; | |
2278 | *d++ = '0'; | |
2279 | } | |
2280 | else if (isPRINT_LC(ch)) | |
2281 | *d++ = ch; | |
2282 | else { | |
2283 | *d++ = '^'; | |
2284 | *d++ = toCTRL(ch); | |
2285 | } | |
2286 | } | |
2287 | if (s < end) { | |
2288 | *d++ = '.'; | |
2289 | *d++ = '.'; | |
2290 | *d++ = '.'; | |
2291 | } | |
2292 | *d = '\0'; | |
2293 | pv = tmpbuf; | |
a0d0e21e | 2294 | } |
a0d0e21e | 2295 | |
533c011a | 2296 | if (PL_op) |
9014280d | 2297 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
2298 | "Argument \"%s\" isn't numeric in %s", pv, |
2299 | OP_DESC(PL_op)); | |
a0d0e21e | 2300 | else |
9014280d | 2301 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 2302 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
2303 | } |
2304 | ||
c2988b20 NC |
2305 | /* |
2306 | =for apidoc looks_like_number | |
2307 | ||
645c22ef DM |
2308 | Test if the content of an SV looks like a number (or is a number). |
2309 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
2310 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
2311 | |
2312 | =cut | |
2313 | */ | |
2314 | ||
2315 | I32 | |
2316 | Perl_looks_like_number(pTHX_ SV *sv) | |
2317 | { | |
a3b680e6 | 2318 | register const char *sbegin; |
c2988b20 NC |
2319 | STRLEN len; |
2320 | ||
2321 | if (SvPOK(sv)) { | |
3f7c398e | 2322 | sbegin = SvPVX_const(sv); |
c2988b20 NC |
2323 | len = SvCUR(sv); |
2324 | } | |
2325 | else if (SvPOKp(sv)) | |
2326 | sbegin = SvPV(sv, len); | |
2327 | else | |
e0ab1c0e | 2328 | return SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK); |
c2988b20 NC |
2329 | return grok_number(sbegin, len, NULL); |
2330 | } | |
25da4f38 IZ |
2331 | |
2332 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
2333 | until proven guilty, assume that things are not that bad... */ | |
2334 | ||
645c22ef DM |
2335 | /* |
2336 | NV_PRESERVES_UV: | |
2337 | ||
2338 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
2339 | an IV (an assumption perl has been based on to date) it becomes necessary |
2340 | to remove the assumption that the NV always carries enough precision to | |
2341 | recreate the IV whenever needed, and that the NV is the canonical form. | |
2342 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 2343 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
2344 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
2345 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
2346 | conversion where precision was lost and IV/UV/NV slots that have a | |
2347 | valid conversion which has lost no precision | |
645c22ef | 2348 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
2349 | would lose precision, the precise conversion (or differently |
2350 | imprecise conversion) is also performed and cached, to prevent | |
2351 | requests for different numeric formats on the same SV causing | |
2352 | lossy conversion chains. (lossless conversion chains are perfectly | |
2353 | acceptable (still)) | |
2354 | ||
2355 | ||
2356 | flags are used: | |
2357 | SvIOKp is true if the IV slot contains a valid value | |
2358 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
2359 | SvNOKp is true if the NV slot contains a valid value | |
2360 | SvNOK is true only if the NV value is accurate | |
2361 | ||
2362 | so | |
645c22ef | 2363 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
2364 | IV(or UV) would lose accuracy over a direct conversion from PV to |
2365 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
2366 | SV as IOK NOKp (ie not NOK). | |
2367 | ||
645c22ef | 2368 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
2369 | NV would lose accuracy over a direct conversion from PV to NV. If it |
2370 | would, cache both conversions, flag similarly. | |
2371 | ||
2372 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
2373 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
2374 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
2375 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 2376 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 2377 | |
645c22ef DM |
2378 | The benefit of this is that operations such as pp_add know that if |
2379 | SvIOK is true for both left and right operands, then integer addition | |
2380 | can be used instead of floating point (for cases where the result won't | |
2381 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
2382 | loss of precision compared with integer addition. |
2383 | ||
2384 | * making IV and NV equal status should make maths accurate on 64 bit | |
2385 | platforms | |
2386 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 2387 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
2388 | looking for SvIOK and checking for overflow will not outweigh the |
2389 | fp to integer speedup) | |
2390 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
2391 | values, as the change from SvIOK to SvIOKp will cause a call into | |
2392 | sv_2iv each time rather than a macro access direct to the IV slot | |
2393 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 2394 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
2395 | |
2396 | #################################################################### | |
645c22ef DM |
2397 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
2398 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
2399 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
2400 | #################################################################### |
2401 | ||
645c22ef | 2402 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
2403 | performance ratio. |
2404 | */ | |
2405 | ||
2406 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
2407 | # define IS_NUMBER_UNDERFLOW_IV 1 |
2408 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
2409 | # define IS_NUMBER_IV_AND_UV 2 | |
2410 | # define IS_NUMBER_OVERFLOW_IV 4 | |
2411 | # define IS_NUMBER_OVERFLOW_UV 5 | |
2412 | ||
2413 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
2414 | |
2415 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
2416 | STATIC int | |
645c22ef | 2417 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 2418 | { |
3f7c398e | 2419 | 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 |
2420 | if (SvNVX(sv) < (NV)IV_MIN) { |
2421 | (void)SvIOKp_on(sv); | |
2422 | (void)SvNOK_on(sv); | |
45977657 | 2423 | SvIV_set(sv, IV_MIN); |
28e5dec8 JH |
2424 | return IS_NUMBER_UNDERFLOW_IV; |
2425 | } | |
2426 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2427 | (void)SvIOKp_on(sv); | |
2428 | (void)SvNOK_on(sv); | |
2429 | SvIsUV_on(sv); | |
607fa7f2 | 2430 | SvUV_set(sv, UV_MAX); |
28e5dec8 JH |
2431 | return IS_NUMBER_OVERFLOW_UV; |
2432 | } | |
c2988b20 NC |
2433 | (void)SvIOKp_on(sv); |
2434 | (void)SvNOK_on(sv); | |
2435 | /* Can't use strtol etc to convert this string. (See truth table in | |
2436 | sv_2iv */ | |
2437 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
45977657 | 2438 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2439 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2440 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
2441 | } else { | |
2442 | /* Integer is imprecise. NOK, IOKp */ | |
2443 | } | |
2444 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
2445 | } | |
2446 | SvIsUV_on(sv); | |
607fa7f2 | 2447 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2448 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { |
2449 | if (SvUVX(sv) == UV_MAX) { | |
2450 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
2451 | possibly be preserved by NV. Hence, it must be overflow. | |
2452 | NOK, IOKp */ | |
2453 | return IS_NUMBER_OVERFLOW_UV; | |
2454 | } | |
2455 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
2456 | } else { | |
2457 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 2458 | } |
c2988b20 | 2459 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 2460 | } |
645c22ef DM |
2461 | #endif /* !NV_PRESERVES_UV*/ |
2462 | ||
891f9566 YST |
2463 | /* sv_2iv() is now a macro using Perl_sv_2iv_flags(); |
2464 | * this function provided for binary compatibility only | |
2465 | */ | |
2466 | ||
2467 | IV | |
2468 | Perl_sv_2iv(pTHX_ register SV *sv) | |
2469 | { | |
2470 | return sv_2iv_flags(sv, SV_GMAGIC); | |
2471 | } | |
2472 | ||
645c22ef | 2473 | /* |
891f9566 | 2474 | =for apidoc sv_2iv_flags |
645c22ef | 2475 | |
891f9566 YST |
2476 | Return the integer value of an SV, doing any necessary string |
2477 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. | |
2478 | Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
645c22ef DM |
2479 | |
2480 | =cut | |
2481 | */ | |
28e5dec8 | 2482 | |
a0d0e21e | 2483 | IV |
891f9566 | 2484 | Perl_sv_2iv_flags(pTHX_ register SV *sv, I32 flags) |
79072805 LW |
2485 | { |
2486 | if (!sv) | |
2487 | return 0; | |
8990e307 | 2488 | if (SvGMAGICAL(sv)) { |
891f9566 YST |
2489 | if (flags & SV_GMAGIC) |
2490 | mg_get(sv); | |
463ee0b2 LW |
2491 | if (SvIOKp(sv)) |
2492 | return SvIVX(sv); | |
748a9306 | 2493 | if (SvNOKp(sv)) { |
25da4f38 | 2494 | return I_V(SvNVX(sv)); |
748a9306 | 2495 | } |
36477c24 | 2496 | if (SvPOKp(sv) && SvLEN(sv)) |
2497 | return asIV(sv); | |
3fe9a6f1 | 2498 | if (!SvROK(sv)) { |
d008e5eb | 2499 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2500 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2501 | report_uninit(sv); |
c6ee37c5 | 2502 | } |
36477c24 | 2503 | return 0; |
3fe9a6f1 | 2504 | } |
463ee0b2 | 2505 | } |
ed6116ce | 2506 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2507 | if (SvROK(sv)) { |
a0d0e21e | 2508 | SV* tmpstr; |
1554e226 | 2509 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2510 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2511 | return SvIV(tmpstr); |
56431972 | 2512 | return PTR2IV(SvRV(sv)); |
a0d0e21e | 2513 | } |
765f542d NC |
2514 | if (SvIsCOW(sv)) { |
2515 | sv_force_normal_flags(sv, 0); | |
47deb5e7 | 2516 | } |
0336b60e | 2517 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2518 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2519 | report_uninit(sv); |
ed6116ce LW |
2520 | return 0; |
2521 | } | |
79072805 | 2522 | } |
25da4f38 IZ |
2523 | if (SvIOKp(sv)) { |
2524 | if (SvIsUV(sv)) { | |
2525 | return (IV)(SvUVX(sv)); | |
2526 | } | |
2527 | else { | |
2528 | return SvIVX(sv); | |
2529 | } | |
463ee0b2 | 2530 | } |
748a9306 | 2531 | if (SvNOKp(sv)) { |
28e5dec8 JH |
2532 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2533 | * without also getting a cached IV/UV from it at the same time | |
2534 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2535 | * IV or UV at same time to avoid this. NWC */ | |
25da4f38 IZ |
2536 | |
2537 | if (SvTYPE(sv) == SVt_NV) | |
2538 | sv_upgrade(sv, SVt_PVNV); | |
2539 | ||
28e5dec8 JH |
2540 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
2541 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
2542 | certainly cast into the IV range at IV_MAX, whereas the correct | |
2543 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
2544 | cases go to UV */ | |
2545 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2546 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2547 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2548 | #ifndef NV_PRESERVES_UV | |
2549 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2550 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2551 | /* Don't flag it as "accurately an integer" if the number | |
2552 | came from a (by definition imprecise) NV operation, and | |
2553 | we're outside the range of NV integer precision */ | |
2554 | #endif | |
2555 | ) { | |
2556 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2557 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2558 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2559 | PTR2UV(sv), |
2560 | SvNVX(sv), | |
2561 | SvIVX(sv))); | |
2562 | ||
2563 | } else { | |
2564 | /* IV not precise. No need to convert from PV, as NV | |
2565 | conversion would already have cached IV if it detected | |
2566 | that PV->IV would be better than PV->NV->IV | |
2567 | flags already correct - don't set public IOK. */ | |
2568 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2569 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2570 | PTR2UV(sv), |
2571 | SvNVX(sv), | |
2572 | SvIVX(sv))); | |
2573 | } | |
2574 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2575 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2576 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2577 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2578 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2579 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2580 | Hopefully for 2s complement IV_MIN is something like | |
2581 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2582 | } |
25da4f38 | 2583 | else { |
607fa7f2 | 2584 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2585 | if ( |
2586 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2587 | #ifndef NV_PRESERVES_UV | |
2588 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2589 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2590 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2591 | /* Don't flag it as "accurately an integer" if the number | |
2592 | came from a (by definition imprecise) NV operation, and | |
2593 | we're outside the range of NV integer precision */ | |
2594 | #endif | |
2595 | ) | |
2596 | SvIOK_on(sv); | |
25da4f38 IZ |
2597 | SvIsUV_on(sv); |
2598 | ret_iv_max: | |
1c846c1f | 2599 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 2600 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 2601 | PTR2UV(sv), |
57def98f JH |
2602 | SvUVX(sv), |
2603 | SvUVX(sv))); | |
25da4f38 IZ |
2604 | return (IV)SvUVX(sv); |
2605 | } | |
748a9306 LW |
2606 | } |
2607 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 2608 | UV value; |
504618e9 | 2609 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
25da4f38 IZ |
2610 | /* We want to avoid a possible problem when we cache an IV which |
2611 | may be later translated to an NV, and the resulting NV is not | |
c2988b20 NC |
2612 | the same as the direct translation of the initial string |
2613 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
2614 | be careful to ensure that the value with the .456 is around if the | |
2615 | NV value is requested in the future). | |
1c846c1f | 2616 | |
25da4f38 IZ |
2617 | This means that if we cache such an IV, we need to cache the |
2618 | NV as well. Moreover, we trade speed for space, and do not | |
28e5dec8 | 2619 | cache the NV if we are sure it's not needed. |
25da4f38 | 2620 | */ |
16b7a9a4 | 2621 | |
c2988b20 NC |
2622 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2623 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2624 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2625 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2626 | if (SvTYPE(sv) < SVt_PVIV) |
2627 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2628 | (void)SvIOK_on(sv); |
c2988b20 NC |
2629 | } else if (SvTYPE(sv) < SVt_PVNV) |
2630 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2631 | |
c2988b20 NC |
2632 | /* If NV preserves UV then we only use the UV value if we know that |
2633 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2634 | then the value returned may have more precision than atof() will | |
2635 | return, even though value isn't perfectly accurate. */ | |
2636 | if ((numtype & (IS_NUMBER_IN_UV | |
2637 | #ifdef NV_PRESERVES_UV | |
2638 | | IS_NUMBER_NOT_INT | |
2639 | #endif | |
2640 | )) == IS_NUMBER_IN_UV) { | |
2641 | /* This won't turn off the public IOK flag if it was set above */ | |
2642 | (void)SvIOKp_on(sv); | |
2643 | ||
2644 | if (!(numtype & IS_NUMBER_NEG)) { | |
2645 | /* positive */; | |
2646 | if (value <= (UV)IV_MAX) { | |
45977657 | 2647 | SvIV_set(sv, (IV)value); |
c2988b20 | 2648 | } else { |
607fa7f2 | 2649 | SvUV_set(sv, value); |
c2988b20 NC |
2650 | SvIsUV_on(sv); |
2651 | } | |
2652 | } else { | |
2653 | /* 2s complement assumption */ | |
2654 | if (value <= (UV)IV_MIN) { | |
45977657 | 2655 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2656 | } else { |
2657 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2658 | I'm assuming it will be rare. */ |
c2988b20 NC |
2659 | if (SvTYPE(sv) < SVt_PVNV) |
2660 | sv_upgrade(sv, SVt_PVNV); | |
2661 | SvNOK_on(sv); | |
2662 | SvIOK_off(sv); | |
2663 | SvIOKp_on(sv); | |
9d6ce603 | 2664 | SvNV_set(sv, -(NV)value); |
45977657 | 2665 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2666 | } |
2667 | } | |
2668 | } | |
2669 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2670 | will be in the previous block to set the IV slot, and the next | |
2671 | block to set the NV slot. So no else here. */ | |
2672 | ||
2673 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2674 | != IS_NUMBER_IN_UV) { | |
2675 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
3f7c398e | 2676 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 | 2677 | |
c2988b20 NC |
2678 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2679 | not_a_number(sv); | |
28e5dec8 | 2680 | |
65202027 | 2681 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2682 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2683 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2684 | #else |
1779d84d | 2685 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2686 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2687 | #endif |
28e5dec8 JH |
2688 | |
2689 | ||
2690 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2691 | (void)SvIOKp_on(sv); |
2692 | (void)SvNOK_on(sv); | |
2693 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2694 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2695 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2696 | SvIOK_on(sv); | |
28e5dec8 | 2697 | } else { |
c2988b20 NC |
2698 | /* Integer is imprecise. NOK, IOKp */ |
2699 | } | |
2700 | /* UV will not work better than IV */ | |
2701 | } else { | |
2702 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2703 | SvIsUV_on(sv); | |
2704 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 2705 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
2706 | SvIsUV_on(sv); |
2707 | } else { | |
607fa7f2 | 2708 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2709 | /* 0xFFFFFFFFFFFFFFFF not an issue in here */ |
2710 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2711 | SvIOK_on(sv); | |
28e5dec8 JH |
2712 | SvIsUV_on(sv); |
2713 | } else { | |
c2988b20 NC |
2714 | /* Integer is imprecise. NOK, IOKp, is UV */ |
2715 | SvIsUV_on(sv); | |
28e5dec8 | 2716 | } |
28e5dec8 | 2717 | } |
c2988b20 NC |
2718 | goto ret_iv_max; |
2719 | } | |
28e5dec8 | 2720 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2721 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2722 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2723 | /* The IV slot will have been set from value returned by | |
2724 | grok_number above. The NV slot has just been set using | |
2725 | Atof. */ | |
560b0c46 | 2726 | SvNOK_on(sv); |
c2988b20 NC |
2727 | assert (SvIOKp(sv)); |
2728 | } else { | |
2729 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2730 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2731 | /* Small enough to preserve all bits. */ | |
2732 | (void)SvIOKp_on(sv); | |
2733 | SvNOK_on(sv); | |
45977657 | 2734 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2735 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
2736 | SvIOK_on(sv); | |
2737 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2738 | this NV is in the preserved range, therefore: */ | |
2739 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2740 | < (UV)IV_MAX)) { | |
32fdb065 | 2741 | 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 |
2742 | } |
2743 | } else { | |
2744 | /* IN_UV NOT_INT | |
2745 | 0 0 already failed to read UV. | |
2746 | 0 1 already failed to read UV. | |
2747 | 1 0 you won't get here in this case. IV/UV | |
2748 | slot set, public IOK, Atof() unneeded. | |
2749 | 1 1 already read UV. | |
2750 | so there's no point in sv_2iuv_non_preserve() attempting | |
2751 | to use atol, strtol, strtoul etc. */ | |
2752 | if (sv_2iuv_non_preserve (sv, numtype) | |
2753 | >= IS_NUMBER_OVERFLOW_IV) | |
2754 | goto ret_iv_max; | |
2755 | } | |
2756 | } | |
28e5dec8 | 2757 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2758 | } |
28e5dec8 | 2759 | } else { |
599cee73 | 2760 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 2761 | report_uninit(sv); |
25da4f38 IZ |
2762 | if (SvTYPE(sv) < SVt_IV) |
2763 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2764 | sv_upgrade(sv, SVt_IV); | |
a0d0e21e | 2765 | return 0; |
79072805 | 2766 | } |
1d7c1841 GS |
2767 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2768 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2769 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2770 | } |
2771 | ||
891f9566 YST |
2772 | /* sv_2uv() is now a macro using Perl_sv_2uv_flags(); |
2773 | * this function provided for binary compatibility only | |
2774 | */ | |
2775 | ||
2776 | UV | |
2777 | Perl_sv_2uv(pTHX_ register SV *sv) | |
2778 | { | |
2779 | return sv_2uv_flags(sv, SV_GMAGIC); | |
2780 | } | |
2781 | ||
645c22ef | 2782 | /* |
891f9566 | 2783 | =for apidoc sv_2uv_flags |
645c22ef DM |
2784 | |
2785 | Return the unsigned integer value of an SV, doing any necessary string | |
891f9566 YST |
2786 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. |
2787 | Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros. | |
645c22ef DM |
2788 | |
2789 | =cut | |
2790 | */ | |
2791 | ||
ff68c719 | 2792 | UV |
891f9566 | 2793 | Perl_sv_2uv_flags(pTHX_ register SV *sv, I32 flags) |
ff68c719 | 2794 | { |
2795 | if (!sv) | |
2796 | return 0; | |
2797 | if (SvGMAGICAL(sv)) { | |
891f9566 YST |
2798 | if (flags & SV_GMAGIC) |
2799 | mg_get(sv); | |
ff68c719 | 2800 | if (SvIOKp(sv)) |
2801 | return SvUVX(sv); | |
2802 | if (SvNOKp(sv)) | |
2803 | return U_V(SvNVX(sv)); | |
36477c24 | 2804 | if (SvPOKp(sv) && SvLEN(sv)) |
2805 | return asUV(sv); | |
3fe9a6f1 | 2806 | if (!SvROK(sv)) { |
d008e5eb | 2807 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2808 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2809 | report_uninit(sv); |
c6ee37c5 | 2810 | } |
36477c24 | 2811 | return 0; |
3fe9a6f1 | 2812 | } |
ff68c719 | 2813 | } |
2814 | if (SvTHINKFIRST(sv)) { | |
2815 | if (SvROK(sv)) { | |
ff68c719 | 2816 | SV* tmpstr; |
1554e226 | 2817 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2818 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2819 | return SvUV(tmpstr); |
56431972 | 2820 | return PTR2UV(SvRV(sv)); |
ff68c719 | 2821 | } |
765f542d NC |
2822 | if (SvIsCOW(sv)) { |
2823 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2824 | } |
0336b60e | 2825 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2826 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2827 | report_uninit(sv); |
ff68c719 | 2828 | return 0; |
2829 | } | |
2830 | } | |
25da4f38 IZ |
2831 | if (SvIOKp(sv)) { |
2832 | if (SvIsUV(sv)) { | |
2833 | return SvUVX(sv); | |
2834 | } | |
2835 | else { | |
2836 | return (UV)SvIVX(sv); | |
2837 | } | |
ff68c719 | 2838 | } |
2839 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
2840 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2841 | * without also getting a cached IV/UV from it at the same time | |
2842 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2843 | * IV or UV at same time to avoid this. */ | |
2844 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
2845 | ||
25da4f38 IZ |
2846 | if (SvTYPE(sv) == SVt_NV) |
2847 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 JH |
2848 | |
2849 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ | |
2850 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2851 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2852 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2853 | #ifndef NV_PRESERVES_UV | |
2854 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2855 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2856 | /* Don't flag it as "accurately an integer" if the number | |
2857 | came from a (by definition imprecise) NV operation, and | |
2858 | we're outside the range of NV integer precision */ | |
2859 | #endif | |
2860 | ) { | |
2861 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2862 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2863 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2864 | PTR2UV(sv), |
2865 | SvNVX(sv), | |
2866 | SvIVX(sv))); | |
2867 | ||
2868 | } else { | |
2869 | /* IV not precise. No need to convert from PV, as NV | |
2870 | conversion would already have cached IV if it detected | |
2871 | that PV->IV would be better than PV->NV->IV | |
2872 | flags already correct - don't set public IOK. */ | |
2873 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2874 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2875 | PTR2UV(sv), |
2876 | SvNVX(sv), | |
2877 | SvIVX(sv))); | |
2878 | } | |
2879 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2880 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2881 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2882 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2883 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2884 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2885 | Hopefully for 2s complement IV_MIN is something like | |
2886 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2887 | } |
28e5dec8 | 2888 | else { |
607fa7f2 | 2889 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2890 | if ( |
2891 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2892 | #ifndef NV_PRESERVES_UV | |
2893 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2894 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2895 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2896 | /* Don't flag it as "accurately an integer" if the number | |
2897 | came from a (by definition imprecise) NV operation, and | |
2898 | we're outside the range of NV integer precision */ | |
2899 | #endif | |
2900 | ) | |
2901 | SvIOK_on(sv); | |
2902 | SvIsUV_on(sv); | |
1c846c1f | 2903 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
28e5dec8 | 2904 | "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n", |
57def98f | 2905 | PTR2UV(sv), |
28e5dec8 JH |
2906 | SvUVX(sv), |
2907 | SvUVX(sv))); | |
25da4f38 | 2908 | } |
ff68c719 | 2909 | } |
2910 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 2911 | UV value; |
504618e9 | 2912 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
25da4f38 IZ |
2913 | |
2914 | /* We want to avoid a possible problem when we cache a UV which | |
2915 | may be later translated to an NV, and the resulting NV is not | |
2916 | the translation of the initial data. | |
1c846c1f | 2917 | |
25da4f38 IZ |
2918 | This means that if we cache such a UV, we need to cache the |
2919 | NV as well. Moreover, we trade speed for space, and do not | |
2920 | cache the NV if not needed. | |
2921 | */ | |
16b7a9a4 | 2922 | |
c2988b20 NC |
2923 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2924 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2925 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2926 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 | 2927 | if (SvTYPE(sv) < SVt_PVIV) |
f7bbb42a JH |
2928 | sv_upgrade(sv, SVt_PVIV); |
2929 | (void)SvIOK_on(sv); | |
c2988b20 NC |
2930 | } else if (SvTYPE(sv) < SVt_PVNV) |
2931 | sv_upgrade(sv, SVt_PVNV); | |
d460ef45 | 2932 | |
c2988b20 NC |
2933 | /* If NV preserves UV then we only use the UV value if we know that |
2934 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2935 | then the value returned may have more precision than atof() will | |
2936 | return, even though it isn't accurate. */ | |
2937 | if ((numtype & (IS_NUMBER_IN_UV | |
2938 | #ifdef NV_PRESERVES_UV | |
2939 | | IS_NUMBER_NOT_INT | |
2940 | #endif | |
2941 | )) == IS_NUMBER_IN_UV) { | |
2942 | /* This won't turn off the public IOK flag if it was set above */ | |
2943 | (void)SvIOKp_on(sv); | |
2944 | ||
2945 | if (!(numtype & IS_NUMBER_NEG)) { | |
2946 | /* positive */; | |
2947 | if (value <= (UV)IV_MAX) { | |
45977657 | 2948 | SvIV_set(sv, (IV)value); |
28e5dec8 JH |
2949 | } else { |
2950 | /* it didn't overflow, and it was positive. */ | |
607fa7f2 | 2951 | SvUV_set(sv, value); |
28e5dec8 JH |
2952 | SvIsUV_on(sv); |
2953 | } | |
c2988b20 NC |
2954 | } else { |
2955 | /* 2s complement assumption */ | |
2956 | if (value <= (UV)IV_MIN) { | |
45977657 | 2957 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2958 | } else { |
2959 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2960 | I'm assuming it will be rare. */ |
c2988b20 NC |
2961 | if (SvTYPE(sv) < SVt_PVNV) |
2962 | sv_upgrade(sv, SVt_PVNV); | |
2963 | SvNOK_on(sv); | |
2964 | SvIOK_off(sv); | |
2965 | SvIOKp_on(sv); | |
9d6ce603 | 2966 | SvNV_set(sv, -(NV)value); |
45977657 | 2967 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2968 | } |
2969 | } | |
2970 | } | |
2971 | ||
2972 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2973 | != IS_NUMBER_IN_UV) { | |
2974 | /* It wasn't an integer, or it overflowed the UV. */ | |
3f7c398e | 2975 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 | 2976 | |
c2988b20 | 2977 | if (! numtype && ckWARN(WARN_NUMERIC)) |
28e5dec8 JH |
2978 | not_a_number(sv); |
2979 | ||
2980 | #if defined(USE_LONG_DOUBLE) | |
c2988b20 NC |
2981 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n", |
2982 | PTR2UV(sv), SvNVX(sv))); | |
28e5dec8 | 2983 | #else |
1779d84d | 2984 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"NVgf")\n", |
c2988b20 | 2985 | PTR2UV(sv), SvNVX(sv))); |
28e5dec8 JH |
2986 | #endif |
2987 | ||
2988 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2989 | (void)SvIOKp_on(sv); |
2990 | (void)SvNOK_on(sv); | |
2991 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2992 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2993 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2994 | SvIOK_on(sv); | |
2995 | } else { | |
2996 | /* Integer is imprecise. NOK, IOKp */ | |
2997 | } | |
2998 | /* UV will not work better than IV */ | |
2999 | } else { | |
3000 | if (SvNVX(sv) > (NV)UV_MAX) { | |
3001 | SvIsUV_on(sv); | |
3002 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 3003 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
3004 | SvIsUV_on(sv); |
3005 | } else { | |
607fa7f2 | 3006 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
3007 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs |
3008 | NV preservse UV so can do correct comparison. */ | |
3009 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
3010 | SvIOK_on(sv); | |
3011 | SvIsUV_on(sv); | |
3012 | } else { | |
3013 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
3014 | SvIsUV_on(sv); | |
3015 | } | |
3016 | } | |
3017 | } | |
28e5dec8 | 3018 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
3019 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3020 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
3021 | /* The UV slot will have been set from value returned by | |
3022 | grok_number above. The NV slot has just been set using | |
3023 | Atof. */ | |
560b0c46 | 3024 | SvNOK_on(sv); |
c2988b20 NC |
3025 | assert (SvIOKp(sv)); |
3026 | } else { | |
3027 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
3028 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
3029 | /* Small enough to preserve all bits. */ | |
3030 | (void)SvIOKp_on(sv); | |
3031 | SvNOK_on(sv); | |
45977657 | 3032 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
3033 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
3034 | SvIOK_on(sv); | |
3035 | /* Assumption: first non-preserved integer is < IV_MAX, | |
3036 | this NV is in the preserved range, therefore: */ | |
3037 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
3038 | < (UV)IV_MAX)) { | |
32fdb065 | 3039 | 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 |
3040 | } |
3041 | } else | |
3042 | sv_2iuv_non_preserve (sv, numtype); | |
3043 | } | |
28e5dec8 | 3044 | #endif /* NV_PRESERVES_UV */ |
f7bbb42a | 3045 | } |
ff68c719 | 3046 | } |
3047 | else { | |
d008e5eb | 3048 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3049 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3050 | report_uninit(sv); |
c6ee37c5 | 3051 | } |
25da4f38 IZ |
3052 | if (SvTYPE(sv) < SVt_IV) |
3053 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3054 | sv_upgrade(sv, SVt_IV); | |
ff68c719 | 3055 | return 0; |
3056 | } | |
25da4f38 | 3057 | |
1d7c1841 GS |
3058 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
3059 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 3060 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 3061 | } |
3062 | ||
645c22ef DM |
3063 | /* |
3064 | =for apidoc sv_2nv | |
3065 | ||
3066 | Return the num value of an SV, doing any necessary string or integer | |
3067 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
3068 | macros. | |
3069 | ||
3070 | =cut | |
3071 | */ | |
3072 | ||
65202027 | 3073 | NV |
864dbfa3 | 3074 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
3075 | { |
3076 | if (!sv) | |
3077 | return 0.0; | |
8990e307 | 3078 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
3079 | mg_get(sv); |
3080 | if (SvNOKp(sv)) | |
3081 | return SvNVX(sv); | |
a0d0e21e | 3082 | if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 3083 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && |
504618e9 | 3084 | !grok_number(SvPVX_const(sv), SvCUR(sv), NULL)) |
a0d0e21e | 3085 | not_a_number(sv); |
3f7c398e | 3086 | return Atof(SvPVX_const(sv)); |
a0d0e21e | 3087 | } |
25da4f38 | 3088 | if (SvIOKp(sv)) { |
1c846c1f | 3089 | if (SvIsUV(sv)) |
65202027 | 3090 | return (NV)SvUVX(sv); |
25da4f38 | 3091 | else |
65202027 | 3092 | return (NV)SvIVX(sv); |
25da4f38 | 3093 | } |
16d20bd9 | 3094 | if (!SvROK(sv)) { |
d008e5eb | 3095 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3096 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3097 | report_uninit(sv); |
c6ee37c5 | 3098 | } |
66a1b24b | 3099 | return (NV)0; |
16d20bd9 | 3100 | } |
463ee0b2 | 3101 | } |
ed6116ce | 3102 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 3103 | if (SvROK(sv)) { |
a0d0e21e | 3104 | SV* tmpstr; |
1554e226 | 3105 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 3106 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 3107 | return SvNV(tmpstr); |
56431972 | 3108 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 3109 | } |
765f542d NC |
3110 | if (SvIsCOW(sv)) { |
3111 | sv_force_normal_flags(sv, 0); | |
8a818333 | 3112 | } |
0336b60e | 3113 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 3114 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3115 | report_uninit(sv); |
ed6116ce LW |
3116 | return 0.0; |
3117 | } | |
79072805 LW |
3118 | } |
3119 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
3120 | if (SvTYPE(sv) == SVt_IV) |
3121 | sv_upgrade(sv, SVt_PVNV); | |
3122 | else | |
3123 | sv_upgrade(sv, SVt_NV); | |
906f284f | 3124 | #ifdef USE_LONG_DOUBLE |
097ee67d | 3125 | DEBUG_c({ |
f93f4e46 | 3126 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
3127 | PerlIO_printf(Perl_debug_log, |
3128 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
3129 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
3130 | RESTORE_NUMERIC_LOCAL(); |
3131 | }); | |
65202027 | 3132 | #else |
572bbb43 | 3133 | DEBUG_c({ |
f93f4e46 | 3134 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 3135 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 3136 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
3137 | RESTORE_NUMERIC_LOCAL(); |
3138 | }); | |
572bbb43 | 3139 | #endif |
79072805 LW |
3140 | } |
3141 | else if (SvTYPE(sv) < SVt_PVNV) | |
3142 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
3143 | if (SvNOKp(sv)) { |
3144 | return SvNVX(sv); | |
61604483 | 3145 | } |
59d8ce62 | 3146 | if (SvIOKp(sv)) { |
9d6ce603 | 3147 | SvNV_set(sv, SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv)); |
28e5dec8 JH |
3148 | #ifdef NV_PRESERVES_UV |
3149 | SvNOK_on(sv); | |
3150 | #else | |
3151 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
3152 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
3153 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
3154 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
3155 | SvNOK_on(sv); | |
3156 | else | |
3157 | SvNOKp_on(sv); | |
3158 | #endif | |
93a17b20 | 3159 | } |
748a9306 | 3160 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 3161 | UV value; |
3f7c398e | 3162 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
c2988b20 | 3163 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !numtype) |
a0d0e21e | 3164 | not_a_number(sv); |
28e5dec8 | 3165 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
3166 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3167 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 3168 | /* It's definitely an integer */ |
9d6ce603 | 3169 | SvNV_set(sv, (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value); |
c2988b20 | 3170 | } else |
3f7c398e | 3171 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
3172 | SvNOK_on(sv); |
3173 | #else | |
3f7c398e | 3174 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
3175 | /* Only set the public NV OK flag if this NV preserves the value in |
3176 | the PV at least as well as an IV/UV would. | |
3177 | Not sure how to do this 100% reliably. */ | |
3178 | /* if that shift count is out of range then Configure's test is | |
3179 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
3180 | UV_BITS */ | |
3181 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 3182 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 3183 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
3184 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
3185 | /* Can't use strtol etc to convert this string, so don't try. | |
3186 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
3187 | SvNOK_on(sv); | |
3188 | } else { | |
3189 | /* value has been set. It may not be precise. */ | |
3190 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
3191 | /* 2s complement assumption for (UV)IV_MIN */ | |
3192 | SvNOK_on(sv); /* Integer is too negative. */ | |
3193 | } else { | |
3194 | SvNOKp_on(sv); | |
3195 | SvIOKp_on(sv); | |
6fa402ec | 3196 | |
c2988b20 | 3197 | if (numtype & IS_NUMBER_NEG) { |
45977657 | 3198 | SvIV_set(sv, -(IV)value); |
c2988b20 | 3199 | } else if (value <= (UV)IV_MAX) { |
45977657 | 3200 | SvIV_set(sv, (IV)value); |
c2988b20 | 3201 | } else { |
607fa7f2 | 3202 | SvUV_set(sv, value); |
c2988b20 NC |
3203 | SvIsUV_on(sv); |
3204 | } | |
3205 | ||
3206 | if (numtype & IS_NUMBER_NOT_INT) { | |
3207 | /* I believe that even if the original PV had decimals, | |
3208 | they are lost beyond the limit of the FP precision. | |
3209 | However, neither is canonical, so both only get p | |
3210 | flags. NWC, 2000/11/25 */ | |
3211 | /* Both already have p flags, so do nothing */ | |
3212 | } else { | |
66a1b24b | 3213 | const NV nv = SvNVX(sv); |
c2988b20 NC |
3214 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { |
3215 | if (SvIVX(sv) == I_V(nv)) { | |
3216 | SvNOK_on(sv); | |
3217 | SvIOK_on(sv); | |
3218 | } else { | |
3219 | SvIOK_on(sv); | |
3220 | /* It had no "." so it must be integer. */ | |
3221 | } | |
3222 | } else { | |
3223 | /* between IV_MAX and NV(UV_MAX). | |
3224 | Could be slightly > UV_MAX */ | |
6fa402ec | 3225 | |
c2988b20 NC |
3226 | if (numtype & IS_NUMBER_NOT_INT) { |
3227 | /* UV and NV both imprecise. */ | |
3228 | } else { | |
66a1b24b | 3229 | const UV nv_as_uv = U_V(nv); |
c2988b20 NC |
3230 | |
3231 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
3232 | SvNOK_on(sv); | |
3233 | SvIOK_on(sv); | |
3234 | } else { | |
3235 | SvIOK_on(sv); | |
3236 | } | |
3237 | } | |
3238 | } | |
3239 | } | |
3240 | } | |
3241 | } | |
28e5dec8 | 3242 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 3243 | } |
79072805 | 3244 | else { |
599cee73 | 3245 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 3246 | report_uninit(sv); |
25da4f38 IZ |
3247 | if (SvTYPE(sv) < SVt_NV) |
3248 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
3249 | /* XXX Ilya implies that this is a bug in callers that assume this |
3250 | and ideally should be fixed. */ | |
25da4f38 | 3251 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 3252 | return 0.0; |
79072805 | 3253 | } |
572bbb43 | 3254 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 3255 | DEBUG_c({ |
f93f4e46 | 3256 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
3257 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
3258 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
3259 | RESTORE_NUMERIC_LOCAL(); |
3260 | }); | |
65202027 | 3261 | #else |
572bbb43 | 3262 | DEBUG_c({ |
f93f4e46 | 3263 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 3264 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 3265 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
3266 | RESTORE_NUMERIC_LOCAL(); |
3267 | }); | |
572bbb43 | 3268 | #endif |
463ee0b2 | 3269 | return SvNVX(sv); |
79072805 LW |
3270 | } |
3271 | ||
645c22ef DM |
3272 | /* asIV(): extract an integer from the string value of an SV. |
3273 | * Caller must validate PVX */ | |
3274 | ||
76e3520e | 3275 | STATIC IV |
cea2e8a9 | 3276 | S_asIV(pTHX_ SV *sv) |
36477c24 | 3277 | { |
c2988b20 | 3278 | UV value; |
66a1b24b | 3279 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
c2988b20 NC |
3280 | |
3281 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
3282 | == IS_NUMBER_IN_UV) { | |
645c22ef | 3283 | /* It's definitely an integer */ |
c2988b20 NC |
3284 | if (numtype & IS_NUMBER_NEG) { |
3285 | if (value < (UV)IV_MIN) | |
3286 | return -(IV)value; | |
3287 | } else { | |
3288 | if (value < (UV)IV_MAX) | |
3289 | return (IV)value; | |
3290 | } | |
3291 | } | |
d008e5eb | 3292 | if (!numtype) { |
d008e5eb GS |
3293 | if (ckWARN(WARN_NUMERIC)) |
3294 | not_a_number(sv); | |
3295 | } | |
3f7c398e | 3296 | return I_V(Atof(SvPVX_const(sv))); |
36477c24 | 3297 | } |
3298 | ||
645c22ef DM |
3299 | /* asUV(): extract an unsigned integer from the string value of an SV |
3300 | * Caller must validate PVX */ | |
3301 | ||
76e3520e | 3302 | STATIC UV |
cea2e8a9 | 3303 | S_asUV(pTHX_ SV *sv) |
36477c24 | 3304 | { |
c2988b20 | 3305 | UV value; |
504618e9 | 3306 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
36477c24 | 3307 | |
c2988b20 NC |
3308 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
3309 | == IS_NUMBER_IN_UV) { | |
645c22ef | 3310 | /* It's definitely an integer */ |
6fa402ec | 3311 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
3312 | return value; |
3313 | } | |
d008e5eb | 3314 | if (!numtype) { |
d008e5eb GS |
3315 | if (ckWARN(WARN_NUMERIC)) |
3316 | not_a_number(sv); | |
3317 | } | |
3f7c398e | 3318 | return U_V(Atof(SvPVX_const(sv))); |
36477c24 | 3319 | } |
3320 | ||
645c22ef DM |
3321 | /* |
3322 | =for apidoc sv_2pv_nolen | |
3323 | ||
3324 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
3325 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
3326 | =cut | |
3327 | */ | |
3328 | ||
79072805 | 3329 | char * |
864dbfa3 | 3330 | Perl_sv_2pv_nolen(pTHX_ register SV *sv) |
1fa8b10d | 3331 | { |
dafda6d1 | 3332 | return sv_2pv(sv, 0); |
1fa8b10d JD |
3333 | } |
3334 | ||
645c22ef DM |
3335 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
3336 | * UV as a string towards the end of buf, and return pointers to start and | |
3337 | * end of it. | |
3338 | * | |
3339 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
3340 | */ | |
3341 | ||
864dbfa3 | 3342 | static char * |
25da4f38 IZ |
3343 | uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
3344 | { | |
25da4f38 IZ |
3345 | char *ptr = buf + TYPE_CHARS(UV); |
3346 | char *ebuf = ptr; | |
3347 | int sign; | |
25da4f38 IZ |
3348 | |
3349 | if (is_uv) | |
3350 | sign = 0; | |
3351 | else if (iv >= 0) { | |
3352 | uv = iv; | |
3353 | sign = 0; | |
3354 | } else { | |
3355 | uv = -iv; | |
3356 | sign = 1; | |
3357 | } | |
3358 | do { | |
eb160463 | 3359 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
3360 | } while (uv /= 10); |
3361 | if (sign) | |
3362 | *--ptr = '-'; | |
3363 | *peob = ebuf; | |
3364 | return ptr; | |
3365 | } | |
3366 | ||
09540bc3 JH |
3367 | /* sv_2pv() is now a macro using Perl_sv_2pv_flags(); |
3368 | * this function provided for binary compatibility only | |
3369 | */ | |
3370 | ||
3371 | char * | |
3372 | Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp) | |
3373 | { | |
3374 | return sv_2pv_flags(sv, lp, SV_GMAGIC); | |
3375 | } | |
3376 | ||
645c22ef DM |
3377 | /* |
3378 | =for apidoc sv_2pv_flags | |
3379 | ||
ff276b08 | 3380 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
3381 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
3382 | if necessary. | |
3383 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
3384 | usually end up here too. | |
3385 | ||
3386 | =cut | |
3387 | */ | |
3388 | ||
8d6d96c1 HS |
3389 | char * |
3390 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
3391 | { | |
79072805 LW |
3392 | register char *s; |
3393 | int olderrno; | |
cb50f42d | 3394 | SV *tsv, *origsv; |
25da4f38 IZ |
3395 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
3396 | char *tmpbuf = tbuf; | |
dafda6d1 NC |
3397 | STRLEN n_a; |
3398 | ||
3399 | if (!lp) { | |
3400 | /* Saves needing to do lots of if (!lp) checks below */ | |
3401 | lp = &n_a; | |
3402 | } | |
79072805 | 3403 | |
463ee0b2 LW |
3404 | if (!sv) { |
3405 | *lp = 0; | |
73d840c0 | 3406 | return (char *)""; |
463ee0b2 | 3407 | } |
8990e307 | 3408 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
3409 | if (flags & SV_GMAGIC) |
3410 | mg_get(sv); | |
463ee0b2 LW |
3411 | if (SvPOKp(sv)) { |
3412 | *lp = SvCUR(sv); | |
4d84ee25 NC |
3413 | if (flags & SV_CONST_RETURN) |
3414 | return (char *)SvPVX_const(sv); | |
463ee0b2 LW |
3415 | return SvPVX(sv); |
3416 | } | |
cf2093f6 | 3417 | if (SvIOKp(sv)) { |
1c846c1f | 3418 | if (SvIsUV(sv)) |
57def98f | 3419 | (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 3420 | else |
57def98f | 3421 | (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv)); |
46fc3d4c | 3422 | tsv = Nullsv; |
a0d0e21e | 3423 | goto tokensave; |
463ee0b2 LW |
3424 | } |
3425 | if (SvNOKp(sv)) { | |
2d4389e4 | 3426 | Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf); |
46fc3d4c | 3427 | tsv = Nullsv; |
a0d0e21e | 3428 | goto tokensave; |
463ee0b2 | 3429 | } |
16d20bd9 | 3430 | if (!SvROK(sv)) { |
d008e5eb | 3431 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3432 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3433 | report_uninit(sv); |
c6ee37c5 | 3434 | } |
16d20bd9 | 3435 | *lp = 0; |
73d840c0 | 3436 | return (char *)""; |
16d20bd9 | 3437 | } |
463ee0b2 | 3438 | } |
ed6116ce LW |
3439 | if (SvTHINKFIRST(sv)) { |
3440 | if (SvROK(sv)) { | |
a0d0e21e | 3441 | SV* tmpstr; |
e1ec3a88 | 3442 | register const char *typestr; |
1554e226 | 3443 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 3444 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
446eaa42 YST |
3445 | char *pv = SvPV(tmpstr, *lp); |
3446 | if (SvUTF8(tmpstr)) | |
3447 | SvUTF8_on(sv); | |
3448 | else | |
3449 | SvUTF8_off(sv); | |
3450 | return pv; | |
3451 | } | |
cb50f42d | 3452 | origsv = sv; |
ed6116ce LW |
3453 | sv = (SV*)SvRV(sv); |
3454 | if (!sv) | |
e1ec3a88 | 3455 | typestr = "NULLREF"; |
ed6116ce | 3456 | else { |
f9277f47 IZ |
3457 | MAGIC *mg; |
3458 | ||
ed6116ce | 3459 | switch (SvTYPE(sv)) { |
f9277f47 IZ |
3460 | case SVt_PVMG: |
3461 | if ( ((SvFLAGS(sv) & | |
1c846c1f | 3462 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) |
faf82a0b | 3463 | == (SVs_OBJECT|SVs_SMG)) |
14befaf4 | 3464 | && (mg = mg_find(sv, PERL_MAGIC_qr))) { |
e1ec3a88 | 3465 | const regexp *re = (regexp *)mg->mg_obj; |
1bd3ad17 | 3466 | |
2cd61cdb | 3467 | if (!mg->mg_ptr) { |
e1ec3a88 | 3468 | const char *fptr = "msix"; |
8782bef2 GB |
3469 | char reflags[6]; |
3470 | char ch; | |
3471 | int left = 0; | |
3472 | int right = 4; | |
ff385a1b | 3473 | char need_newline = 0; |
eb160463 | 3474 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
8782bef2 | 3475 | |
155aba94 | 3476 | while((ch = *fptr++)) { |
8782bef2 GB |
3477 | if(reganch & 1) { |
3478 | reflags[left++] = ch; | |
3479 | } | |
3480 | else { | |
3481 | reflags[right--] = ch; | |
3482 | } | |
3483 | reganch >>= 1; | |
3484 | } | |
3485 | if(left != 4) { | |
3486 | reflags[left] = '-'; | |
3487 | left = 5; | |
3488 | } | |
3489 | ||
3490 | mg->mg_len = re->prelen + 4 + left; | |
ff385a1b JF |
3491 | /* |
3492 | * If /x was used, we have to worry about a regex | |
3493 | * ending with a comment later being embedded | |
3494 | * within another regex. If so, we don't want this | |
3495 | * regex's "commentization" to leak out to the | |
3496 | * right part of the enclosing regex, we must cap | |
3497 | * it with a newline. | |
3498 | * | |
3499 | * So, if /x was used, we scan backwards from the | |
3500 | * end of the regex. If we find a '#' before we | |
3501 | * find a newline, we need to add a newline | |
3502 | * ourself. If we find a '\n' first (or if we | |
3503 | * don't find '#' or '\n'), we don't need to add | |
3504 | * anything. -jfriedl | |
3505 | */ | |
3506 | if (PMf_EXTENDED & re->reganch) | |
3507 | { | |
e1ec3a88 | 3508 | const char *endptr = re->precomp + re->prelen; |
ff385a1b JF |
3509 | while (endptr >= re->precomp) |
3510 | { | |
e1ec3a88 | 3511 | const char c = *(endptr--); |
ff385a1b JF |
3512 | if (c == '\n') |
3513 | break; /* don't need another */ | |
3514 | if (c == '#') { | |
3515 | /* we end while in a comment, so we | |
3516 | need a newline */ | |
3517 | mg->mg_len++; /* save space for it */ | |
3518 | need_newline = 1; /* note to add it */ | |
ab01544f | 3519 | break; |
ff385a1b JF |
3520 | } |
3521 | } | |
3522 | } | |
3523 | ||
8782bef2 GB |
3524 | New(616, mg->mg_ptr, mg->mg_len + 1 + left, char); |
3525 | Copy("(?", mg->mg_ptr, 2, char); | |
3526 | Copy(reflags, mg->mg_ptr+2, left, char); | |
3527 | Copy(":", mg->mg_ptr+left+2, 1, char); | |
3528 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
ff385a1b JF |
3529 | if (need_newline) |
3530 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
1bd3ad17 IZ |
3531 | mg->mg_ptr[mg->mg_len - 1] = ')'; |
3532 | mg->mg_ptr[mg->mg_len] = 0; | |
3533 | } | |
3280af22 | 3534 | PL_reginterp_cnt += re->program[0].next_off; |
cb50f42d YST |
3535 | |
3536 | if (re->reganch & ROPT_UTF8) | |
3537 | SvUTF8_on(origsv); | |
3538 | else | |
3539 | SvUTF8_off(origsv); | |
1bd3ad17 IZ |
3540 | *lp = mg->mg_len; |
3541 | return mg->mg_ptr; | |
f9277f47 IZ |
3542 | } |
3543 | /* Fall through */ | |
ed6116ce LW |
3544 | case SVt_NULL: |
3545 | case SVt_IV: | |
3546 | case SVt_NV: | |
3547 | case SVt_RV: | |
3548 | case SVt_PV: | |
3549 | case SVt_PVIV: | |
3550 | case SVt_PVNV: | |
e1ec3a88 AL |
3551 | case SVt_PVBM: typestr = SvROK(sv) ? "REF" : "SCALAR"; break; |
3552 | case SVt_PVLV: typestr = SvROK(sv) ? "REF" | |
be65207d DM |
3553 | /* tied lvalues should appear to be |
3554 | * scalars for backwards compatitbility */ | |
3555 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
3556 | ? "SCALAR" : "LVALUE"; break; | |
e1ec3a88 AL |
3557 | case SVt_PVAV: typestr = "ARRAY"; break; |
3558 | case SVt_PVHV: typestr = "HASH"; break; | |
3559 | case SVt_PVCV: typestr = "CODE"; break; | |
3560 | case SVt_PVGV: typestr = "GLOB"; break; | |
3561 | case SVt_PVFM: typestr = "FORMAT"; break; | |
3562 | case SVt_PVIO: typestr = "IO"; break; | |
3563 | default: typestr = "UNKNOWN"; break; | |
ed6116ce | 3564 | } |
46fc3d4c | 3565 | tsv = NEWSV(0,0); |
a5cb6b62 | 3566 | if (SvOBJECT(sv)) { |
bfcb3514 | 3567 | const char *name = HvNAME_get(SvSTASH(sv)); |
a5cb6b62 | 3568 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s(0x%"UVxf")", |
e1ec3a88 | 3569 | name ? name : "__ANON__" , typestr, PTR2UV(sv)); |
a5cb6b62 | 3570 | } |
ed6116ce | 3571 | else |
e1ec3a88 | 3572 | Perl_sv_setpvf(aTHX_ tsv, "%s(0x%"UVxf")", typestr, PTR2UV(sv)); |
a0d0e21e | 3573 | goto tokensaveref; |
463ee0b2 | 3574 | } |
e1ec3a88 | 3575 | *lp = strlen(typestr); |
73d840c0 | 3576 | return (char *)typestr; |
79072805 | 3577 | } |
0336b60e | 3578 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 3579 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3580 | report_uninit(sv); |
ed6116ce | 3581 | *lp = 0; |
73d840c0 | 3582 | return (char *)""; |
79072805 | 3583 | } |
79072805 | 3584 | } |
28e5dec8 JH |
3585 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
3586 | /* I'm assuming that if both IV and NV are equally valid then | |
3587 | converting the IV is going to be more efficient */ | |
e1ec3a88 AL |
3588 | const U32 isIOK = SvIOK(sv); |
3589 | const U32 isUIOK = SvIsUV(sv); | |
28e5dec8 JH |
3590 | char buf[TYPE_CHARS(UV)]; |
3591 | char *ebuf, *ptr; | |
3592 | ||
3593 | if (SvTYPE(sv) < SVt_PVIV) | |
3594 | sv_upgrade(sv, SVt_PVIV); | |
3595 | if (isUIOK) | |
3596 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
3597 | else | |
3598 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
eb160463 | 3599 | SvGROW(sv, (STRLEN)(ebuf - ptr + 1)); /* inlined from sv_setpvn */ |
4d84ee25 | 3600 | Move(ptr,SvPVX_mutable(sv),ebuf - ptr,char); |
28e5dec8 JH |
3601 | SvCUR_set(sv, ebuf - ptr); |
3602 | s = SvEND(sv); | |
3603 | *s = '\0'; | |
3604 | if (isIOK) | |
3605 | SvIOK_on(sv); | |
3606 | else | |
3607 | SvIOKp_on(sv); | |
3608 | if (isUIOK) | |
3609 | SvIsUV_on(sv); | |
3610 | } | |
3611 | else if (SvNOKp(sv)) { | |
79072805 LW |
3612 | if (SvTYPE(sv) < SVt_PVNV) |
3613 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 3614 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
59155cc0 | 3615 | SvGROW(sv, NV_DIG + 20); |
4d84ee25 | 3616 | s = SvPVX_mutable(sv); |
79072805 | 3617 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 3618 | #ifdef apollo |
463ee0b2 | 3619 | if (SvNVX(sv) == 0.0) |
79072805 LW |
3620 | (void)strcpy(s,"0"); |
3621 | else | |
3622 | #endif /*apollo*/ | |
bbce6d69 | 3623 | { |
2d4389e4 | 3624 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 3625 | } |
79072805 | 3626 | errno = olderrno; |
a0d0e21e LW |
3627 | #ifdef FIXNEGATIVEZERO |
3628 | if (*s == '-' && s[1] == '0' && !s[2]) | |
3629 | strcpy(s,"0"); | |
3630 | #endif | |
79072805 LW |
3631 | while (*s) s++; |
3632 | #ifdef hcx | |
3633 | if (s[-1] == '.') | |
46fc3d4c | 3634 | *--s = '\0'; |
79072805 LW |
3635 | #endif |
3636 | } | |
79072805 | 3637 | else { |
0336b60e IZ |
3638 | if (ckWARN(WARN_UNINITIALIZED) |
3639 | && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) | |
29489e7c | 3640 | report_uninit(sv); |
a0d0e21e | 3641 | *lp = 0; |
25da4f38 IZ |
3642 | if (SvTYPE(sv) < SVt_PV) |
3643 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3644 | sv_upgrade(sv, SVt_PV); | |
73d840c0 | 3645 | return (char *)""; |
79072805 | 3646 | } |
3f7c398e | 3647 | *lp = s - SvPVX_const(sv); |
463ee0b2 | 3648 | SvCUR_set(sv, *lp); |
79072805 | 3649 | SvPOK_on(sv); |
1d7c1841 | 3650 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 3651 | PTR2UV(sv),SvPVX_const(sv))); |
4d84ee25 NC |
3652 | if (flags & SV_CONST_RETURN) |
3653 | return (char *)SvPVX_const(sv); | |
463ee0b2 | 3654 | return SvPVX(sv); |
a0d0e21e LW |
3655 | |
3656 | tokensave: | |
3657 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ | |
3658 | /* Sneaky stuff here */ | |
3659 | ||
3660 | tokensaveref: | |
46fc3d4c | 3661 | if (!tsv) |
96827780 | 3662 | tsv = newSVpv(tmpbuf, 0); |
46fc3d4c | 3663 | sv_2mortal(tsv); |
3664 | *lp = SvCUR(tsv); | |
3665 | return SvPVX(tsv); | |
a0d0e21e LW |
3666 | } |
3667 | else { | |
27da23d5 | 3668 | dVAR; |
a0d0e21e | 3669 | STRLEN len; |
73d840c0 | 3670 | const char *t; |
46fc3d4c | 3671 | |
3672 | if (tsv) { | |
3673 | sv_2mortal(tsv); | |
3f7c398e | 3674 | t = SvPVX_const(tsv); |
46fc3d4c | 3675 | len = SvCUR(tsv); |
3676 | } | |
3677 | else { | |
96827780 MB |
3678 | t = tmpbuf; |
3679 | len = strlen(tmpbuf); | |
46fc3d4c | 3680 | } |
a0d0e21e | 3681 | #ifdef FIXNEGATIVEZERO |
46fc3d4c | 3682 | if (len == 2 && t[0] == '-' && t[1] == '0') { |
3683 | t = "0"; | |
3684 | len = 1; | |
3685 | } | |
a0d0e21e | 3686 | #endif |
862a34c6 | 3687 | SvUPGRADE(sv, SVt_PV); |
46fc3d4c | 3688 | *lp = len; |
a0d0e21e LW |
3689 | s = SvGROW(sv, len + 1); |
3690 | SvCUR_set(sv, len); | |
6bf554b4 | 3691 | SvPOKp_on(sv); |
e90e2364 | 3692 | return strcpy(s, t); |
a0d0e21e | 3693 | } |
463ee0b2 LW |
3694 | } |
3695 | ||
645c22ef | 3696 | /* |
6050d10e JP |
3697 | =for apidoc sv_copypv |
3698 | ||
3699 | Copies a stringified representation of the source SV into the | |
3700 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3701 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3702 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3703 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3704 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3705 | would lose the UTF-8'ness of the PV. |
3706 | ||
3707 | =cut | |
3708 | */ | |
3709 | ||
3710 | void | |
3711 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3712 | { | |
446eaa42 | 3713 | STRLEN len; |
4d84ee25 NC |
3714 | const char *s; |
3715 | s = SvPV_const(ssv,len); | |
cb50f42d | 3716 | sv_setpvn(dsv,s,len); |
446eaa42 | 3717 | if (SvUTF8(ssv)) |
cb50f42d | 3718 | SvUTF8_on(dsv); |
446eaa42 | 3719 | else |
cb50f42d | 3720 | SvUTF8_off(dsv); |
6050d10e JP |
3721 | } |
3722 | ||
3723 | /* | |
645c22ef DM |
3724 | =for apidoc sv_2pvbyte_nolen |
3725 | ||
3726 | Return a pointer to the byte-encoded representation of the SV. | |
1e54db1a | 3727 | May cause the SV to be downgraded from UTF-8 as a side-effect. |
645c22ef DM |
3728 | |
3729 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3730 | ||
3731 | =cut | |
3732 | */ | |
3733 | ||
7340a771 GS |
3734 | char * |
3735 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
3736 | { | |
dafda6d1 | 3737 | return sv_2pvbyte(sv, 0); |
7340a771 GS |
3738 | } |
3739 | ||
645c22ef DM |
3740 | /* |
3741 | =for apidoc sv_2pvbyte | |
3742 | ||
3743 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 3744 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
3745 | side-effect. |
3746 | ||
3747 | Usually accessed via the C<SvPVbyte> macro. | |
3748 | ||
3749 | =cut | |
3750 | */ | |
3751 | ||
7340a771 GS |
3752 | char * |
3753 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3754 | { | |
0875d2fe NIS |
3755 | sv_utf8_downgrade(sv,0); |
3756 | return SvPV(sv,*lp); | |
7340a771 GS |
3757 | } |
3758 | ||
645c22ef DM |
3759 | /* |
3760 | =for apidoc sv_2pvutf8_nolen | |
3761 | ||
1e54db1a JH |
3762 | Return a pointer to the UTF-8-encoded representation of the SV. |
3763 | May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3764 | |
3765 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3766 | ||
3767 | =cut | |
3768 | */ | |
3769 | ||
7340a771 GS |
3770 | char * |
3771 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
3772 | { | |
dafda6d1 | 3773 | return sv_2pvutf8(sv, 0); |
7340a771 GS |
3774 | } |
3775 | ||
645c22ef DM |
3776 | /* |
3777 | =for apidoc sv_2pvutf8 | |
3778 | ||
1e54db1a JH |
3779 | Return a pointer to the UTF-8-encoded representation of the SV, and set *lp |
3780 | to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3781 | |
3782 | Usually accessed via the C<SvPVutf8> macro. | |
3783 | ||
3784 | =cut | |
3785 | */ | |
3786 | ||
7340a771 GS |
3787 | char * |
3788 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3789 | { | |
560a288e | 3790 | sv_utf8_upgrade(sv); |
7d59b7e4 | 3791 | return SvPV(sv,*lp); |
7340a771 | 3792 | } |
1c846c1f | 3793 | |
645c22ef DM |
3794 | /* |
3795 | =for apidoc sv_2bool | |
3796 | ||
3797 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3798 | sv_true() or its macro equivalent. |
645c22ef DM |
3799 | |
3800 | =cut | |
3801 | */ | |
3802 | ||
463ee0b2 | 3803 | bool |
864dbfa3 | 3804 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3805 | { |
8990e307 | 3806 | if (SvGMAGICAL(sv)) |
463ee0b2 LW |
3807 | mg_get(sv); |
3808 | ||
a0d0e21e LW |
3809 | if (!SvOK(sv)) |
3810 | return 0; | |
3811 | if (SvROK(sv)) { | |
a0d0e21e | 3812 | SV* tmpsv; |
1554e226 | 3813 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3814 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3815 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3816 | return SvRV(sv) != 0; |
3817 | } | |
463ee0b2 | 3818 | if (SvPOKp(sv)) { |
11343788 MB |
3819 | register XPV* Xpvtmp; |
3820 | if ((Xpvtmp = (XPV*)SvANY(sv)) && | |
339049b0 | 3821 | (*sv->sv_u.svu_pv > '0' || |
11343788 | 3822 | Xpvtmp->xpv_cur > 1 || |
339049b0 | 3823 | (Xpvtmp->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
463ee0b2 LW |
3824 | return 1; |
3825 | else | |
3826 | return 0; | |
3827 | } | |
3828 | else { | |
3829 | if (SvIOKp(sv)) | |
3830 | return SvIVX(sv) != 0; | |
3831 | else { | |
3832 | if (SvNOKp(sv)) | |
3833 | return SvNVX(sv) != 0.0; | |
3834 | else | |
3835 | return FALSE; | |
3836 | } | |
3837 | } | |
79072805 LW |
3838 | } |
3839 | ||
09540bc3 JH |
3840 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
3841 | * this function provided for binary compatibility only | |
3842 | */ | |
3843 | ||
3844 | ||
3845 | STRLEN | |
3846 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
3847 | { | |
3848 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
3849 | } | |
3850 | ||
c461cf8f JH |
3851 | /* |
3852 | =for apidoc sv_utf8_upgrade | |
3853 | ||
78ea37eb | 3854 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3855 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3856 | Always sets the SvUTF8 flag to avoid future validity checks even |
3857 | if all the bytes have hibit clear. | |
c461cf8f | 3858 | |
13a6c0e0 JH |
3859 | This is not as a general purpose byte encoding to Unicode interface: |
3860 | use the Encode extension for that. | |
3861 | ||
8d6d96c1 HS |
3862 | =for apidoc sv_utf8_upgrade_flags |
3863 | ||
78ea37eb | 3864 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3865 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3866 | Always sets the SvUTF8 flag to avoid future validity checks even |
3867 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3868 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3869 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3870 | ||
13a6c0e0 JH |
3871 | This is not as a general purpose byte encoding to Unicode interface: |
3872 | use the Encode extension for that. | |
3873 | ||
8d6d96c1 HS |
3874 | =cut |
3875 | */ | |
3876 | ||
3877 | STRLEN | |
3878 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3879 | { | |
808c356f RGS |
3880 | if (sv == &PL_sv_undef) |
3881 | return 0; | |
e0e62c2a NIS |
3882 | if (!SvPOK(sv)) { |
3883 | STRLEN len = 0; | |
d52b7888 NC |
3884 | if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) { |
3885 | (void) sv_2pv_flags(sv,&len, flags); | |
3886 | if (SvUTF8(sv)) | |
3887 | return len; | |
3888 | } else { | |
3889 | (void) SvPV_force(sv,len); | |
3890 | } | |
e0e62c2a | 3891 | } |
4411f3b6 | 3892 | |
f5cee72b | 3893 | if (SvUTF8(sv)) { |
5fec3b1d | 3894 | return SvCUR(sv); |
f5cee72b | 3895 | } |
5fec3b1d | 3896 | |
765f542d NC |
3897 | if (SvIsCOW(sv)) { |
3898 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3899 | } |
3900 | ||
88632417 | 3901 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3902 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 3903 | else { /* Assume Latin-1/EBCDIC */ |
c4e7c712 NC |
3904 | /* This function could be much more efficient if we |
3905 | * had a FLAG in SVs to signal if there are any hibit | |
3906 | * chars in the PV. Given that there isn't such a flag | |
3907 | * make the loop as fast as possible. */ | |
3908 | U8 *s = (U8 *) SvPVX(sv); | |
3909 | U8 *e = (U8 *) SvEND(sv); | |
3910 | U8 *t = s; | |
3911 | int hibit = 0; | |
3912 | ||
3913 | while (t < e) { | |
3914 | U8 ch = *t++; | |
3915 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) | |
3916 | break; | |
3917 | } | |
3918 | if (hibit) { | |
3919 | STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */ | |
3920 | s = bytes_to_utf8((U8*)s, &len); | |
3921 | ||
3922 | SvPV_free(sv); /* No longer using what was there before. */ | |
3923 | ||
3924 | SvPV_set(sv, (char*)s); | |
3925 | SvCUR_set(sv, len - 1); | |
3926 | SvLEN_set(sv, len); /* No longer know the real size. */ | |
3927 | } | |
3928 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ | |
3929 | SvUTF8_on(sv); | |
560a288e | 3930 | } |
4411f3b6 | 3931 | return SvCUR(sv); |
560a288e GS |
3932 | } |
3933 | ||
c461cf8f JH |
3934 | /* |
3935 | =for apidoc sv_utf8_downgrade | |
3936 | ||
78ea37eb TS |
3937 | Attempts to convert the PV of an SV from characters to bytes. |
3938 | If the PV contains a character beyond byte, this conversion will fail; | |
3939 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
3940 | true, croaks. |
3941 | ||
13a6c0e0 JH |
3942 | This is not as a general purpose Unicode to byte encoding interface: |
3943 | use the Encode extension for that. | |
3944 | ||
c461cf8f JH |
3945 | =cut |
3946 | */ | |
3947 | ||
560a288e GS |
3948 | bool |
3949 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
3950 | { | |
78ea37eb | 3951 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 3952 | if (SvCUR(sv)) { |
03cfe0ae | 3953 | U8 *s; |
652088fc | 3954 | STRLEN len; |
fa301091 | 3955 | |
765f542d NC |
3956 | if (SvIsCOW(sv)) { |
3957 | sv_force_normal_flags(sv, 0); | |
3958 | } | |
03cfe0ae NIS |
3959 | s = (U8 *) SvPV(sv, len); |
3960 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
3961 | if (fail_ok) |
3962 | return FALSE; | |
3963 | else { | |
3964 | if (PL_op) | |
3965 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 3966 | OP_DESC(PL_op)); |
fa301091 JH |
3967 | else |
3968 | Perl_croak(aTHX_ "Wide character"); | |
3969 | } | |
4b3603a4 | 3970 | } |
b162af07 | 3971 | SvCUR_set(sv, len); |
67e989fb | 3972 | } |
560a288e | 3973 | } |
ffebcc3e | 3974 | SvUTF8_off(sv); |
560a288e GS |
3975 | return TRUE; |
3976 | } | |
3977 | ||
c461cf8f JH |
3978 | /* |
3979 | =for apidoc sv_utf8_encode | |
3980 | ||
78ea37eb TS |
3981 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
3982 | flag off so that it looks like octets again. | |
c461cf8f JH |
3983 | |
3984 | =cut | |
3985 | */ | |
3986 | ||
560a288e GS |
3987 | void |
3988 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
3989 | { | |
4411f3b6 | 3990 | (void) sv_utf8_upgrade(sv); |
4c94c214 NC |
3991 | if (SvIsCOW(sv)) { |
3992 | sv_force_normal_flags(sv, 0); | |
3993 | } | |
3994 | if (SvREADONLY(sv)) { | |
3995 | Perl_croak(aTHX_ PL_no_modify); | |
3996 | } | |
560a288e GS |
3997 | SvUTF8_off(sv); |
3998 | } | |
3999 | ||
4411f3b6 NIS |
4000 | /* |
4001 | =for apidoc sv_utf8_decode | |
4002 | ||
78ea37eb TS |
4003 | If the PV of the SV is an octet sequence in UTF-8 |
4004 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
4005 | so that it looks like a character. If the PV contains only single-byte | |
4006 | characters, the C<SvUTF8> flag stays being off. | |
4007 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
4008 | |
4009 | =cut | |
4010 | */ | |
4011 | ||
560a288e GS |
4012 | bool |
4013 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
4014 | { | |
78ea37eb | 4015 | if (SvPOKp(sv)) { |
63cd0674 NIS |
4016 | U8 *c; |
4017 | U8 *e; | |
9cbac4c7 | 4018 | |
645c22ef DM |
4019 | /* The octets may have got themselves encoded - get them back as |
4020 | * bytes | |
4021 | */ | |
4022 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
4023 | return FALSE; |
4024 | ||
4025 | /* it is actually just a matter of turning the utf8 flag on, but | |
4026 | * we want to make sure everything inside is valid utf8 first. | |
4027 | */ | |
63cd0674 NIS |
4028 | c = (U8 *) SvPVX(sv); |
4029 | if (!is_utf8_string(c, SvCUR(sv)+1)) | |
67e989fb | 4030 | return FALSE; |
63cd0674 | 4031 | e = (U8 *) SvEND(sv); |
511c2ff0 | 4032 | while (c < e) { |
c4d5f83a NIS |
4033 | U8 ch = *c++; |
4034 | if (!UTF8_IS_INVARIANT(ch)) { | |
67e989fb JH |
4035 | SvUTF8_on(sv); |
4036 | break; | |
4037 | } | |
560a288e | 4038 | } |
560a288e GS |
4039 | } |
4040 | return TRUE; | |
4041 | } | |
4042 | ||
09540bc3 JH |
4043 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); |
4044 | * this function provided for binary compatibility only | |
4045 | */ | |
4046 | ||
4047 | void | |
4048 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
4049 | { | |
4050 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
4051 | } | |
4052 | ||
954c1994 GS |
4053 | /* |
4054 | =for apidoc sv_setsv | |
4055 | ||
645c22ef DM |
4056 | Copies the contents of the source SV C<ssv> into the destination SV |
4057 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4058 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4059 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4060 | content of the destination. | |
4061 | ||
4062 | You probably want to use one of the assortment of wrappers, such as | |
4063 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4064 | C<SvSetMagicSV_nosteal>. | |
4065 | ||
8d6d96c1 HS |
4066 | =for apidoc sv_setsv_flags |
4067 | ||
645c22ef DM |
4068 | Copies the contents of the source SV C<ssv> into the destination SV |
4069 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
4070 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
4071 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
4072 | content of the destination. | |
4073 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
5fcdf167 NC |
4074 | C<ssv> if appropriate, else not. If the C<flags> parameter has the |
4075 | C<NOSTEAL> bit set then the buffers of temps will not be stolen. <sv_setsv> | |
4076 | and C<sv_setsv_nomg> are implemented in terms of this function. | |
645c22ef DM |
4077 | |
4078 | You probably want to use one of the assortment of wrappers, such as | |
4079 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
4080 | C<SvSetMagicSV_nosteal>. | |
4081 | ||
4082 | This is the primary function for copying scalars, and most other | |
4083 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
4084 | |
4085 | =cut | |
4086 | */ | |
4087 | ||
4088 | void | |
4089 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
4090 | { | |
8990e307 LW |
4091 | register U32 sflags; |
4092 | register int dtype; | |
4093 | register int stype; | |
463ee0b2 | 4094 | |
79072805 LW |
4095 | if (sstr == dstr) |
4096 | return; | |
765f542d | 4097 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 4098 | if (!sstr) |
3280af22 | 4099 | sstr = &PL_sv_undef; |
8990e307 LW |
4100 | stype = SvTYPE(sstr); |
4101 | dtype = SvTYPE(dstr); | |
79072805 | 4102 | |
a0d0e21e | 4103 | SvAMAGIC_off(dstr); |
7a5fa8a2 | 4104 | if ( SvVOK(dstr) ) |
ece467f9 JP |
4105 | { |
4106 | /* need to nuke the magic */ | |
4107 | mg_free(dstr); | |
4108 | SvRMAGICAL_off(dstr); | |
4109 | } | |
9e7bc3e8 | 4110 | |
463ee0b2 | 4111 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 4112 | |
8990e307 | 4113 | switch (stype) { |
79072805 | 4114 | case SVt_NULL: |
aece5585 | 4115 | undef_sstr: |
20408e3c GS |
4116 | if (dtype != SVt_PVGV) { |
4117 | (void)SvOK_off(dstr); | |
4118 | return; | |
4119 | } | |
4120 | break; | |
463ee0b2 | 4121 | case SVt_IV: |
aece5585 GA |
4122 | if (SvIOK(sstr)) { |
4123 | switch (dtype) { | |
4124 | case SVt_NULL: | |
8990e307 | 4125 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
4126 | break; |
4127 | case SVt_NV: | |
8990e307 | 4128 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4129 | break; |
4130 | case SVt_RV: | |
4131 | case SVt_PV: | |
a0d0e21e | 4132 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
4133 | break; |
4134 | } | |
4135 | (void)SvIOK_only(dstr); | |
45977657 | 4136 | SvIV_set(dstr, SvIVX(sstr)); |
25da4f38 IZ |
4137 | if (SvIsUV(sstr)) |
4138 | SvIsUV_on(dstr); | |
27c9684d AP |
4139 | if (SvTAINTED(sstr)) |
4140 | SvTAINT(dstr); | |
aece5585 | 4141 | return; |
8990e307 | 4142 | } |
aece5585 GA |
4143 | goto undef_sstr; |
4144 | ||
463ee0b2 | 4145 | case SVt_NV: |
aece5585 GA |
4146 | if (SvNOK(sstr)) { |
4147 | switch (dtype) { | |
4148 | case SVt_NULL: | |
4149 | case SVt_IV: | |
8990e307 | 4150 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
4151 | break; |
4152 | case SVt_RV: | |
4153 | case SVt_PV: | |
4154 | case SVt_PVIV: | |
a0d0e21e | 4155 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
4156 | break; |
4157 | } | |
9d6ce603 | 4158 | SvNV_set(dstr, SvNVX(sstr)); |
aece5585 | 4159 | (void)SvNOK_only(dstr); |
27c9684d AP |
4160 | if (SvTAINTED(sstr)) |
4161 | SvTAINT(dstr); | |
aece5585 | 4162 | return; |
8990e307 | 4163 | } |
aece5585 GA |
4164 | goto undef_sstr; |
4165 | ||
ed6116ce | 4166 | case SVt_RV: |
8990e307 | 4167 | if (dtype < SVt_RV) |
ed6116ce | 4168 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 4169 | else if (dtype == SVt_PVGV && |
23bb1b96 | 4170 | SvROK(sstr) && SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
c07a80fd | 4171 | sstr = SvRV(sstr); |
a5f75d66 | 4172 | if (sstr == dstr) { |
1d7c1841 GS |
4173 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4174 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4175 | { | |
a5f75d66 | 4176 | GvIMPORTED_on(dstr); |
1d7c1841 | 4177 | } |
a5f75d66 AD |
4178 | GvMULTI_on(dstr); |
4179 | return; | |
4180 | } | |
c07a80fd | 4181 | goto glob_assign; |
4182 | } | |
ed6116ce | 4183 | break; |
fc36a67e | 4184 | case SVt_PVFM: |
d89fc664 NC |
4185 | #ifdef PERL_COPY_ON_WRITE |
4186 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
4187 | if (dtype < SVt_PVIV) | |
4188 | sv_upgrade(dstr, SVt_PVIV); | |
4189 | break; | |
4190 | } | |
4191 | /* Fall through */ | |
4192 | #endif | |
4193 | case SVt_PV: | |
8990e307 | 4194 | if (dtype < SVt_PV) |
463ee0b2 | 4195 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
4196 | break; |
4197 | case SVt_PVIV: | |
8990e307 | 4198 | if (dtype < SVt_PVIV) |
463ee0b2 | 4199 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
4200 | break; |
4201 | case SVt_PVNV: | |
8990e307 | 4202 | if (dtype < SVt_PVNV) |
463ee0b2 | 4203 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 4204 | break; |
4633a7c4 LW |
4205 | case SVt_PVAV: |
4206 | case SVt_PVHV: | |
4207 | case SVt_PVCV: | |
4633a7c4 | 4208 | case SVt_PVIO: |
a3b680e6 AL |
4209 | { |
4210 | const char * const type = sv_reftype(sstr,0); | |
533c011a | 4211 | if (PL_op) |
a3b680e6 | 4212 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", type, OP_NAME(PL_op)); |
4633a7c4 | 4213 | else |
a3b680e6 AL |
4214 | Perl_croak(aTHX_ "Bizarre copy of %s", type); |
4215 | } | |
4633a7c4 LW |
4216 | break; |
4217 | ||
79072805 | 4218 | case SVt_PVGV: |
8990e307 | 4219 | if (dtype <= SVt_PVGV) { |
c07a80fd | 4220 | glob_assign: |
a5f75d66 | 4221 | if (dtype != SVt_PVGV) { |
a3b680e6 AL |
4222 | const char * const name = GvNAME(sstr); |
4223 | const STRLEN len = GvNAMELEN(sstr); | |
b76195c2 DM |
4224 | /* don't upgrade SVt_PVLV: it can hold a glob */ |
4225 | if (dtype != SVt_PVLV) | |
4226 | sv_upgrade(dstr, SVt_PVGV); | |
14befaf4 | 4227 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 4228 | GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr)); |
a0d0e21e LW |
4229 | GvNAME(dstr) = savepvn(name, len); |
4230 | GvNAMELEN(dstr) = len; | |
4231 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
4232 | } | |
7bac28a0 | 4233 | /* ahem, death to those who redefine active sort subs */ |
3280af22 NIS |
4234 | else if (PL_curstackinfo->si_type == PERLSI_SORT |
4235 | && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr))) | |
cea2e8a9 | 4236 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", |
7bac28a0 | 4237 | GvNAME(dstr)); |
5bd07a3d | 4238 | |
7fb37951 AMS |
4239 | #ifdef GV_UNIQUE_CHECK |
4240 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4241 | Perl_croak(aTHX_ PL_no_modify); |
4242 | } | |
4243 | #endif | |
4244 | ||
a0d0e21e | 4245 | (void)SvOK_off(dstr); |
a5f75d66 | 4246 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 4247 | gp_free((GV*)dstr); |
79072805 | 4248 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
4249 | if (SvTAINTED(sstr)) |
4250 | SvTAINT(dstr); | |
1d7c1841 GS |
4251 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
4252 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
4253 | { | |
a5f75d66 | 4254 | GvIMPORTED_on(dstr); |
1d7c1841 | 4255 | } |
a5f75d66 | 4256 | GvMULTI_on(dstr); |
79072805 LW |
4257 | return; |
4258 | } | |
4259 | /* FALL THROUGH */ | |
4260 | ||
4261 | default: | |
8d6d96c1 | 4262 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 4263 | mg_get(sstr); |
eb160463 | 4264 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
4265 | stype = SvTYPE(sstr); |
4266 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
4267 | goto glob_assign; | |
4268 | } | |
4269 | } | |
ded42b9f | 4270 | if (stype == SVt_PVLV) |
862a34c6 | 4271 | SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 4272 | else |
862a34c6 | 4273 | SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
4274 | } |
4275 | ||
8990e307 LW |
4276 | sflags = SvFLAGS(sstr); |
4277 | ||
4278 | if (sflags & SVf_ROK) { | |
4279 | if (dtype >= SVt_PV) { | |
4280 | if (dtype == SVt_PVGV) { | |
4281 | SV *sref = SvREFCNT_inc(SvRV(sstr)); | |
4282 | SV *dref = 0; | |
a3b680e6 | 4283 | const int intro = GvINTRO(dstr); |
a0d0e21e | 4284 | |
7fb37951 AMS |
4285 | #ifdef GV_UNIQUE_CHECK |
4286 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
4287 | Perl_croak(aTHX_ PL_no_modify); |
4288 | } | |
4289 | #endif | |
4290 | ||
a0d0e21e | 4291 | if (intro) { |
a5f75d66 | 4292 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 4293 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 4294 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 4295 | } |
a5f75d66 | 4296 | GvMULTI_on(dstr); |
8990e307 LW |
4297 | switch (SvTYPE(sref)) { |
4298 | case SVt_PVAV: | |
a0d0e21e | 4299 | if (intro) |
890ed176 | 4300 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
4301 | else |
4302 | dref = (SV*)GvAV(dstr); | |
8990e307 | 4303 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 4304 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
4305 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4306 | { | |
a5f75d66 | 4307 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 4308 | } |
8990e307 LW |
4309 | break; |
4310 | case SVt_PVHV: | |
a0d0e21e | 4311 | if (intro) |
890ed176 | 4312 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
4313 | else |
4314 | dref = (SV*)GvHV(dstr); | |
8990e307 | 4315 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 4316 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
4317 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4318 | { | |
a5f75d66 | 4319 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 4320 | } |
8990e307 LW |
4321 | break; |
4322 | case SVt_PVCV: | |
8ebc5c01 | 4323 | if (intro) { |
4324 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
4325 | SvREFCNT_dec(GvCV(dstr)); | |
4326 | GvCV(dstr) = Nullcv; | |
68dc0745 | 4327 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 4328 | PL_sub_generation++; |
8ebc5c01 | 4329 | } |
890ed176 | 4330 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 4331 | } |
68dc0745 | 4332 | else |
4333 | dref = (SV*)GvCV(dstr); | |
4334 | if (GvCV(dstr) != (CV*)sref) { | |
748a9306 | 4335 | CV* cv = GvCV(dstr); |
4633a7c4 | 4336 | if (cv) { |
68dc0745 | 4337 | if (!GvCVGEN((GV*)dstr) && |
4338 | (CvROOT(cv) || CvXSUB(cv))) | |
4339 | { | |
7bac28a0 | 4340 | /* ahem, death to those who redefine |
4341 | * active sort subs */ | |
3280af22 NIS |
4342 | if (PL_curstackinfo->si_type == PERLSI_SORT && |
4343 | PL_sortcop == CvSTART(cv)) | |
1c846c1f | 4344 | Perl_croak(aTHX_ |
7bac28a0 | 4345 | "Can't redefine active sort subroutine %s", |
4346 | GvENAME((GV*)dstr)); | |
beab0874 JT |
4347 | /* Redefining a sub - warning is mandatory if |
4348 | it was a const and its value changed. */ | |
4349 | if (ckWARN(WARN_REDEFINE) | |
4350 | || (CvCONST(cv) | |
4351 | && (!CvCONST((CV*)sref) | |
4352 | || sv_cmp(cv_const_sv(cv), | |
4353 | cv_const_sv((CV*)sref))))) | |
4354 | { | |
9014280d | 4355 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 4356 | CvCONST(cv) |
910764e6 RGS |
4357 | ? "Constant subroutine %s::%s redefined" |
4358 | : "Subroutine %s::%s redefined", | |
bfcb3514 | 4359 | HvNAME_get(GvSTASH((GV*)dstr)), |
beab0874 JT |
4360 | GvENAME((GV*)dstr)); |
4361 | } | |
9607fc9c | 4362 | } |
fb24441d RGS |
4363 | if (!intro) |
4364 | cv_ckproto(cv, (GV*)dstr, | |
4365 | SvPOK(sref) ? SvPVX(sref) : Nullch); | |
4633a7c4 | 4366 | } |
a5f75d66 | 4367 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 4368 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 4369 | GvASSUMECV_on(dstr); |
3280af22 | 4370 | PL_sub_generation++; |
a5f75d66 | 4371 | } |
39bac7f7 | 4372 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
4373 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4374 | { | |
a5f75d66 | 4375 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 4376 | } |
8990e307 | 4377 | break; |
91bba347 LW |
4378 | case SVt_PVIO: |
4379 | if (intro) | |
890ed176 | 4380 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
4381 | else |
4382 | dref = (SV*)GvIOp(dstr); | |
4383 | GvIOp(dstr) = (IO*)sref; | |
4384 | break; | |
f4d13ee9 JH |
4385 | case SVt_PVFM: |
4386 | if (intro) | |
890ed176 | 4387 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
4388 | else |
4389 | dref = (SV*)GvFORM(dstr); | |
4390 | GvFORM(dstr) = (CV*)sref; | |
4391 | break; | |
8990e307 | 4392 | default: |
a0d0e21e | 4393 | if (intro) |
890ed176 | 4394 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
4395 | else |
4396 | dref = (SV*)GvSV(dstr); | |
8990e307 | 4397 | GvSV(dstr) = sref; |
39bac7f7 | 4398 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
4399 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4400 | { | |
a5f75d66 | 4401 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 4402 | } |
8990e307 LW |
4403 | break; |
4404 | } | |
4405 | if (dref) | |
4406 | SvREFCNT_dec(dref); | |
27c9684d AP |
4407 | if (SvTAINTED(sstr)) |
4408 | SvTAINT(dstr); | |
8990e307 LW |
4409 | return; |
4410 | } | |
3f7c398e | 4411 | if (SvPVX_const(dstr)) { |
8bd4d4c5 | 4412 | SvPV_free(dstr); |
b162af07 SP |
4413 | SvLEN_set(dstr, 0); |
4414 | SvCUR_set(dstr, 0); | |
a0d0e21e | 4415 | } |
8990e307 | 4416 | } |
a0d0e21e | 4417 | (void)SvOK_off(dstr); |
b162af07 | 4418 | SvRV_set(dstr, SvREFCNT_inc(SvRV(sstr))); |
ed6116ce | 4419 | SvROK_on(dstr); |
8990e307 | 4420 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4421 | SvNOKp_on(dstr); |
4422 | /* Only set the public OK flag if the source has public OK. */ | |
4423 | if (sflags & SVf_NOK) | |
4424 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 4425 | SvNV_set(dstr, SvNVX(sstr)); |
ed6116ce | 4426 | } |
8990e307 | 4427 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4428 | (void)SvIOKp_on(dstr); |
4429 | if (sflags & SVf_IOK) | |
4430 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4431 | if (sflags & SVf_IVisUV) |
25da4f38 | 4432 | SvIsUV_on(dstr); |
45977657 | 4433 | SvIV_set(dstr, SvIVX(sstr)); |
ed6116ce | 4434 | } |
a0d0e21e LW |
4435 | if (SvAMAGIC(sstr)) { |
4436 | SvAMAGIC_on(dstr); | |
4437 | } | |
ed6116ce | 4438 | } |
8990e307 | 4439 | else if (sflags & SVp_POK) { |
765f542d | 4440 | bool isSwipe = 0; |
79072805 LW |
4441 | |
4442 | /* | |
4443 | * Check to see if we can just swipe the string. If so, it's a | |
4444 | * possible small lose on short strings, but a big win on long ones. | |
3f7c398e SP |
4445 | * It might even be a win on short strings if SvPVX_const(dstr) |
4446 | * has to be allocated and SvPVX_const(sstr) has to be freed. | |
79072805 LW |
4447 | */ |
4448 | ||
120fac95 NC |
4449 | /* Whichever path we take through the next code, we want this true, |
4450 | and doing it now facilitates the COW check. */ | |
4451 | (void)SvPOK_only(dstr); | |
4452 | ||
765f542d | 4453 | if ( |
b8f9541a NC |
4454 | /* We're not already COW */ |
4455 | ((sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
4456 | #ifndef PERL_COPY_ON_WRITE | |
4457 | /* or we are, but dstr isn't a suitable target. */ | |
4458 | || (SvFLAGS(dstr) & CAN_COW_MASK) != CAN_COW_FLAGS | |
4459 | #endif | |
4460 | ) | |
765f542d | 4461 | && |
765f542d NC |
4462 | !(isSwipe = |
4463 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
4464 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
5fcdf167 NC |
4465 | (!(flags & SV_NOSTEAL)) && |
4466 | /* and we're allowed to steal temps */ | |
765f542d NC |
4467 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ |
4468 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 4469 | /* and won't be needed again, potentially */ |
765f542d NC |
4470 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
4471 | #ifdef PERL_COPY_ON_WRITE | |
4472 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS | |
120fac95 | 4473 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS |
765f542d NC |
4474 | && SvTYPE(sstr) >= SVt_PVIV) |
4475 | #endif | |
4476 | ) { | |
4477 | /* Failed the swipe test, and it's not a shared hash key either. | |
4478 | Have to copy the string. */ | |
4479 | STRLEN len = SvCUR(sstr); | |
4480 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
3f7c398e | 4481 | Move(SvPVX_const(sstr),SvPVX(dstr),len,char); |
765f542d NC |
4482 | SvCUR_set(dstr, len); |
4483 | *SvEND(dstr) = '\0'; | |
765f542d NC |
4484 | } else { |
4485 | /* If PERL_COPY_ON_WRITE is not defined, then isSwipe will always | |
4486 | be true in here. */ | |
765f542d NC |
4487 | /* Either it's a shared hash key, or it's suitable for |
4488 | copy-on-write or we can swipe the string. */ | |
46187eeb | 4489 | if (DEBUG_C_TEST) { |
ed252734 | 4490 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
4491 | sv_dump(sstr); |
4492 | sv_dump(dstr); | |
46187eeb | 4493 | } |
a604c751 | 4494 | #ifdef PERL_COPY_ON_WRITE |
765f542d NC |
4495 | if (!isSwipe) { |
4496 | /* I believe I should acquire a global SV mutex if | |
4497 | it's a COW sv (not a shared hash key) to stop | |
4498 | it going un copy-on-write. | |
4499 | If the source SV has gone un copy on write between up there | |
4500 | and down here, then (assert() that) it is of the correct | |
4501 | form to make it copy on write again */ | |
4502 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
4503 | != (SVf_FAKE | SVf_READONLY)) { | |
4504 | SvREADONLY_on(sstr); | |
4505 | SvFAKE_on(sstr); | |
4506 | /* Make the source SV into a loop of 1. | |
4507 | (about to become 2) */ | |
a29f6d03 | 4508 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
4509 | } |
4510 | } | |
4511 | #endif | |
4512 | /* Initial code is common. */ | |
3f7c398e | 4513 | if (SvPVX_const(dstr)) { /* we know that dtype >= SVt_PV */ |
a5f75d66 AD |
4514 | if (SvOOK(dstr)) { |
4515 | SvFLAGS(dstr) &= ~SVf_OOK; | |
3f7c398e | 4516 | Safefree(SvPVX_const(dstr) - SvIVX(dstr)); |
a5f75d66 | 4517 | } |
50483b2c | 4518 | else if (SvLEN(dstr)) |
3f7c398e | 4519 | Safefree(SvPVX_const(dstr)); |
79072805 | 4520 | } |
765f542d | 4521 | |
765f542d NC |
4522 | if (!isSwipe) { |
4523 | /* making another shared SV. */ | |
4524 | STRLEN cur = SvCUR(sstr); | |
4525 | STRLEN len = SvLEN(sstr); | |
a604c751 | 4526 | #ifdef PERL_COPY_ON_WRITE |
765f542d | 4527 | if (len) { |
b8f9541a | 4528 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4529 | /* SvIsCOW_normal */ |
4530 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4531 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4532 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
765f542d | 4533 | SvPV_set(dstr, SvPVX(sstr)); |
a604c751 NC |
4534 | } else |
4535 | #endif | |
4536 | { | |
765f542d | 4537 | /* SvIsCOW_shared_hash */ |
c158a4fd | 4538 | UV hash = SvSHARED_HASH(sstr); |
46187eeb NC |
4539 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4540 | "Copy on write: Sharing hash\n")); | |
b8f9541a NC |
4541 | |
4542 | assert (SvTYPE(dstr) >= SVt_PVIV); | |
765f542d | 4543 | SvPV_set(dstr, |
3f7c398e | 4544 | sharepvn(SvPVX_const(sstr), |
765f542d | 4545 | (sflags & SVf_UTF8?-cur:cur), hash)); |
607fa7f2 | 4546 | SvUV_set(dstr, hash); |
765f542d | 4547 | } |
87a1ef3d SP |
4548 | SvLEN_set(dstr, len); |
4549 | SvCUR_set(dstr, cur); | |
765f542d NC |
4550 | SvREADONLY_on(dstr); |
4551 | SvFAKE_on(dstr); | |
4552 | /* Relesase a global SV mutex. */ | |
4553 | } | |
4554 | else | |
765f542d NC |
4555 | { /* Passes the swipe test. */ |
4556 | SvPV_set(dstr, SvPVX(sstr)); | |
4557 | SvLEN_set(dstr, SvLEN(sstr)); | |
4558 | SvCUR_set(dstr, SvCUR(sstr)); | |
4559 | ||
4560 | SvTEMP_off(dstr); | |
4561 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4562 | SvPV_set(sstr, Nullch); | |
4563 | SvLEN_set(sstr, 0); | |
4564 | SvCUR_set(sstr, 0); | |
4565 | SvTEMP_off(sstr); | |
4566 | } | |
4567 | } | |
9aa983d2 | 4568 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4569 | SvUTF8_on(dstr); |
79072805 | 4570 | /*SUPPRESS 560*/ |
8990e307 | 4571 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4572 | SvNOKp_on(dstr); |
4573 | if (sflags & SVf_NOK) | |
4574 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 4575 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 | 4576 | } |
8990e307 | 4577 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4578 | (void)SvIOKp_on(dstr); |
4579 | if (sflags & SVf_IOK) | |
4580 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4581 | if (sflags & SVf_IVisUV) |
25da4f38 | 4582 | SvIsUV_on(dstr); |
45977657 | 4583 | SvIV_set(dstr, SvIVX(sstr)); |
79072805 | 4584 | } |
92f0c265 | 4585 | if (SvVOK(sstr)) { |
7a5fa8a2 | 4586 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
ece467f9 JP |
4587 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, |
4588 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4589 | SvRMAGICAL_on(dstr); |
7a5fa8a2 | 4590 | } |
79072805 | 4591 | } |
8990e307 | 4592 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4593 | if (sflags & SVf_IOK) |
4594 | (void)SvIOK_only(dstr); | |
4595 | else { | |
9cbac4c7 DM |
4596 | (void)SvOK_off(dstr); |
4597 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4598 | } |
4599 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4600 | if (sflags & SVf_IVisUV) |
25da4f38 | 4601 | SvIsUV_on(dstr); |
45977657 | 4602 | SvIV_set(dstr, SvIVX(sstr)); |
3332b3c1 JH |
4603 | if (sflags & SVp_NOK) { |
4604 | if (sflags & SVf_NOK) | |
4605 | (void)SvNOK_on(dstr); | |
4606 | else | |
4607 | (void)SvNOKp_on(dstr); | |
9d6ce603 | 4608 | SvNV_set(dstr, SvNVX(sstr)); |
3332b3c1 JH |
4609 | } |
4610 | } | |
4611 | else if (sflags & SVp_NOK) { | |
4612 | if (sflags & SVf_NOK) | |
4613 | (void)SvNOK_only(dstr); | |
4614 | else { | |
9cbac4c7 | 4615 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4616 | SvNOKp_on(dstr); |
4617 | } | |
9d6ce603 | 4618 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 LW |
4619 | } |
4620 | else { | |
20408e3c | 4621 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4622 | if (ckWARN(WARN_MISC)) |
9014280d | 4623 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4624 | } |
4625 | else | |
4626 | (void)SvOK_off(dstr); | |
a0d0e21e | 4627 | } |
27c9684d AP |
4628 | if (SvTAINTED(sstr)) |
4629 | SvTAINT(dstr); | |
79072805 LW |
4630 | } |
4631 | ||
954c1994 GS |
4632 | /* |
4633 | =for apidoc sv_setsv_mg | |
4634 | ||
4635 | Like C<sv_setsv>, but also handles 'set' magic. | |
4636 | ||
4637 | =cut | |
4638 | */ | |
4639 | ||
79072805 | 4640 | void |
864dbfa3 | 4641 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4642 | { |
4643 | sv_setsv(dstr,sstr); | |
4644 | SvSETMAGIC(dstr); | |
4645 | } | |
4646 | ||
ed252734 NC |
4647 | #ifdef PERL_COPY_ON_WRITE |
4648 | SV * | |
4649 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4650 | { | |
4651 | STRLEN cur = SvCUR(sstr); | |
4652 | STRLEN len = SvLEN(sstr); | |
4653 | register char *new_pv; | |
4654 | ||
4655 | if (DEBUG_C_TEST) { | |
4656 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4657 | sstr, dstr); | |
4658 | sv_dump(sstr); | |
4659 | if (dstr) | |
4660 | sv_dump(dstr); | |
4661 | } | |
4662 | ||
4663 | if (dstr) { | |
4664 | if (SvTHINKFIRST(dstr)) | |
4665 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
3f7c398e SP |
4666 | else if (SvPVX_const(dstr)) |
4667 | Safefree(SvPVX_const(dstr)); | |
ed252734 NC |
4668 | } |
4669 | else | |
4670 | new_SV(dstr); | |
862a34c6 | 4671 | SvUPGRADE(dstr, SVt_PVIV); |
ed252734 NC |
4672 | |
4673 | assert (SvPOK(sstr)); | |
4674 | assert (SvPOKp(sstr)); | |
4675 | assert (!SvIOK(sstr)); | |
4676 | assert (!SvIOKp(sstr)); | |
4677 | assert (!SvNOK(sstr)); | |
4678 | assert (!SvNOKp(sstr)); | |
4679 | ||
4680 | if (SvIsCOW(sstr)) { | |
4681 | ||
4682 | if (SvLEN(sstr) == 0) { | |
4683 | /* source is a COW shared hash key. */ | |
c158a4fd | 4684 | UV hash = SvSHARED_HASH(sstr); |
ed252734 NC |
4685 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4686 | "Fast copy on write: Sharing hash\n")); | |
607fa7f2 | 4687 | SvUV_set(dstr, hash); |
3f7c398e | 4688 | new_pv = sharepvn(SvPVX_const(sstr), (SvUTF8(sstr)?-cur:cur), hash); |
ed252734 NC |
4689 | goto common_exit; |
4690 | } | |
4691 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4692 | } else { | |
4693 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
862a34c6 | 4694 | SvUPGRADE(sstr, SVt_PVIV); |
ed252734 NC |
4695 | SvREADONLY_on(sstr); |
4696 | SvFAKE_on(sstr); | |
4697 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4698 | "Fast copy on write: Converting sstr to COW\n")); | |
4699 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4700 | } | |
4701 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
4702 | new_pv = SvPVX(sstr); | |
4703 | ||
4704 | common_exit: | |
4705 | SvPV_set(dstr, new_pv); | |
4706 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4707 | if (SvUTF8(sstr)) | |
4708 | SvUTF8_on(dstr); | |
87a1ef3d SP |
4709 | SvLEN_set(dstr, len); |
4710 | SvCUR_set(dstr, cur); | |
ed252734 NC |
4711 | if (DEBUG_C_TEST) { |
4712 | sv_dump(dstr); | |
4713 | } | |
4714 | return dstr; | |
4715 | } | |
4716 | #endif | |
4717 | ||
954c1994 GS |
4718 | /* |
4719 | =for apidoc sv_setpvn | |
4720 | ||
4721 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
4722 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
4723 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
4724 | |
4725 | =cut | |
4726 | */ | |
4727 | ||
ef50df4b | 4728 | void |
864dbfa3 | 4729 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4730 | { |
c6f8c383 | 4731 | register char *dptr; |
22c522df | 4732 | |
765f542d | 4733 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4734 | if (!ptr) { |
a0d0e21e | 4735 | (void)SvOK_off(sv); |
463ee0b2 LW |
4736 | return; |
4737 | } | |
22c522df JH |
4738 | else { |
4739 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
a3b680e6 | 4740 | const IV iv = len; |
9c5ffd7c JH |
4741 | if (iv < 0) |
4742 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4743 | } |
862a34c6 | 4744 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4745 | |
79072805 | 4746 | SvGROW(sv, len + 1); |
c6f8c383 GA |
4747 | dptr = SvPVX(sv); |
4748 | Move(ptr,dptr,len,char); | |
4749 | dptr[len] = '\0'; | |
79072805 | 4750 | SvCUR_set(sv, len); |
1aa99e6b | 4751 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4752 | SvTAINT(sv); |
79072805 LW |
4753 | } |
4754 | ||
954c1994 GS |
4755 | /* |
4756 | =for apidoc sv_setpvn_mg | |
4757 | ||
4758 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4759 | ||
4760 | =cut | |
4761 | */ | |
4762 | ||
79072805 | 4763 | void |
864dbfa3 | 4764 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4765 | { |
4766 | sv_setpvn(sv,ptr,len); | |
4767 | SvSETMAGIC(sv); | |
4768 | } | |
4769 | ||
954c1994 GS |
4770 | /* |
4771 | =for apidoc sv_setpv | |
4772 | ||
4773 | Copies a string into an SV. The string must be null-terminated. Does not | |
4774 | handle 'set' magic. See C<sv_setpv_mg>. | |
4775 | ||
4776 | =cut | |
4777 | */ | |
4778 | ||
ef50df4b | 4779 | void |
864dbfa3 | 4780 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4781 | { |
4782 | register STRLEN len; | |
4783 | ||
765f542d | 4784 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4785 | if (!ptr) { |
a0d0e21e | 4786 | (void)SvOK_off(sv); |
463ee0b2 LW |
4787 | return; |
4788 | } | |
79072805 | 4789 | len = strlen(ptr); |
862a34c6 | 4790 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4791 | |
79072805 | 4792 | SvGROW(sv, len + 1); |
463ee0b2 | 4793 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4794 | SvCUR_set(sv, len); |
1aa99e6b | 4795 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4796 | SvTAINT(sv); |
4797 | } | |
4798 | ||
954c1994 GS |
4799 | /* |
4800 | =for apidoc sv_setpv_mg | |
4801 | ||
4802 | Like C<sv_setpv>, but also handles 'set' magic. | |
4803 | ||
4804 | =cut | |
4805 | */ | |
4806 | ||
463ee0b2 | 4807 | void |
864dbfa3 | 4808 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4809 | { |
4810 | sv_setpv(sv,ptr); | |
4811 | SvSETMAGIC(sv); | |
4812 | } | |
4813 | ||
954c1994 GS |
4814 | /* |
4815 | =for apidoc sv_usepvn | |
4816 | ||
4817 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4818 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4819 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4820 | string length, C<len>, must be supplied. This function will realloc the | |
4821 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4822 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4823 | See C<sv_usepvn_mg>. | |
4824 | ||
4825 | =cut | |
4826 | */ | |
4827 | ||
ef50df4b | 4828 | void |
864dbfa3 | 4829 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4830 | { |
1936d2a7 | 4831 | STRLEN allocate; |
765f542d | 4832 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
862a34c6 | 4833 | SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4834 | if (!ptr) { |
a0d0e21e | 4835 | (void)SvOK_off(sv); |
463ee0b2 LW |
4836 | return; |
4837 | } | |
3f7c398e | 4838 | if (SvPVX_const(sv)) |
8bd4d4c5 | 4839 | SvPV_free(sv); |
1936d2a7 NC |
4840 | |
4841 | allocate = PERL_STRLEN_ROUNDUP(len + 1); | |
7a9b70e9 | 4842 | ptr = saferealloc (ptr, allocate); |
f880fe2f | 4843 | SvPV_set(sv, ptr); |
463ee0b2 | 4844 | SvCUR_set(sv, len); |
1936d2a7 | 4845 | SvLEN_set(sv, allocate); |
463ee0b2 | 4846 | *SvEND(sv) = '\0'; |
1aa99e6b | 4847 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4848 | SvTAINT(sv); |
79072805 LW |
4849 | } |
4850 | ||
954c1994 GS |
4851 | /* |
4852 | =for apidoc sv_usepvn_mg | |
4853 | ||
4854 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4855 | ||
4856 | =cut | |
4857 | */ | |
4858 | ||
ef50df4b | 4859 | void |
864dbfa3 | 4860 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4861 | { |
51c1089b | 4862 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4863 | SvSETMAGIC(sv); |
4864 | } | |
4865 | ||
765f542d NC |
4866 | #ifdef PERL_COPY_ON_WRITE |
4867 | /* Need to do this *after* making the SV normal, as we need the buffer | |
4868 | pointer to remain valid until after we've copied it. If we let go too early, | |
4869 | another thread could invalidate it by unsharing last of the same hash key | |
4870 | (which it can do by means other than releasing copy-on-write Svs) | |
4871 | or by changing the other copy-on-write SVs in the loop. */ | |
4872 | STATIC void | |
3f7c398e | 4873 | S_sv_release_COW(pTHX_ register SV *sv, const char *pvx, STRLEN cur, STRLEN len, |
765f542d NC |
4874 | U32 hash, SV *after) |
4875 | { | |
4876 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4877 | /* we need to find the SV pointing to us. */ | |
4878 | SV *current = SV_COW_NEXT_SV(after); | |
7a5fa8a2 | 4879 | |
765f542d NC |
4880 | if (current == sv) { |
4881 | /* The SV we point to points back to us (there were only two of us | |
4882 | in the loop.) | |
4883 | Hence other SV is no longer copy on write either. */ | |
4884 | SvFAKE_off(after); | |
4885 | SvREADONLY_off(after); | |
4886 | } else { | |
4887 | /* We need to follow the pointers around the loop. */ | |
4888 | SV *next; | |
4889 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4890 | assert (next); | |
4891 | current = next; | |
4892 | /* don't loop forever if the structure is bust, and we have | |
4893 | a pointer into a closed loop. */ | |
4894 | assert (current != after); | |
3f7c398e | 4895 | assert (SvPVX_const(current) == pvx); |
765f542d NC |
4896 | } |
4897 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4898 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4899 | } |
4900 | } else { | |
4901 | unsharepvn(pvx, SvUTF8(sv) ? -(I32)cur : cur, hash); | |
4902 | } | |
4903 | } | |
4904 | ||
4905 | int | |
4906 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4907 | { | |
4908 | if (SvIsCOW(sv)) | |
4909 | sv_force_normal_flags(sv, 0); | |
0c34ef67 MHM |
4910 | SvOOK_off(sv); |
4911 | return 0; | |
765f542d NC |
4912 | } |
4913 | #endif | |
645c22ef DM |
4914 | /* |
4915 | =for apidoc sv_force_normal_flags | |
4916 | ||
4917 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4918 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4919 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4920 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4921 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4922 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4923 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4924 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4925 | with flags set to 0. | |
645c22ef DM |
4926 | |
4927 | =cut | |
4928 | */ | |
4929 | ||
6fc92669 | 4930 | void |
840a7b70 | 4931 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4932 | { |
765f542d NC |
4933 | #ifdef PERL_COPY_ON_WRITE |
4934 | if (SvREADONLY(sv)) { | |
4935 | /* At this point I believe I should acquire a global SV mutex. */ | |
4936 | if (SvFAKE(sv)) { | |
3f7c398e | 4937 | const char *pvx = SvPVX_const(sv); |
66a1b24b AL |
4938 | const STRLEN len = SvLEN(sv); |
4939 | const STRLEN cur = SvCUR(sv); | |
4940 | const U32 hash = SvSHARED_HASH(sv); | |
4941 | SV *const next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ | |
46187eeb NC |
4942 | if (DEBUG_C_TEST) { |
4943 | PerlIO_printf(Perl_debug_log, | |
4944 | "Copy on write: Force normal %ld\n", | |
4945 | (long) flags); | |
e419cbc5 | 4946 | sv_dump(sv); |
46187eeb | 4947 | } |
765f542d NC |
4948 | SvFAKE_off(sv); |
4949 | SvREADONLY_off(sv); | |
4950 | /* This SV doesn't own the buffer, so need to New() a new one: */ | |
f880fe2f | 4951 | SvPV_set(sv, (char*)0); |
87a1ef3d | 4952 | SvLEN_set(sv, 0); |
765f542d NC |
4953 | if (flags & SV_COW_DROP_PV) { |
4954 | /* OK, so we don't need to copy our buffer. */ | |
4955 | SvPOK_off(sv); | |
4956 | } else { | |
4957 | SvGROW(sv, cur + 1); | |
4958 | Move(pvx,SvPVX(sv),cur,char); | |
87a1ef3d | 4959 | SvCUR_set(sv, cur); |
765f542d NC |
4960 | *SvEND(sv) = '\0'; |
4961 | } | |
e419cbc5 | 4962 | sv_release_COW(sv, pvx, cur, len, hash, next); |
46187eeb | 4963 | if (DEBUG_C_TEST) { |
e419cbc5 | 4964 | sv_dump(sv); |
46187eeb | 4965 | } |
765f542d | 4966 | } |
923e4eb5 | 4967 | else if (IN_PERL_RUNTIME) |
765f542d NC |
4968 | Perl_croak(aTHX_ PL_no_modify); |
4969 | /* At this point I believe that I can drop the global SV mutex. */ | |
4970 | } | |
4971 | #else | |
2213622d | 4972 | if (SvREADONLY(sv)) { |
1c846c1f | 4973 | if (SvFAKE(sv)) { |
a433f3d2 | 4974 | const char *pvx = SvPVX_const(sv); |
1df70142 | 4975 | const int is_utf8 = SvUTF8(sv); |
66a1b24b AL |
4976 | const STRLEN len = SvCUR(sv); |
4977 | const U32 hash = SvSHARED_HASH(sv); | |
10bcdfd6 NC |
4978 | SvFAKE_off(sv); |
4979 | SvREADONLY_off(sv); | |
66a1b24b AL |
4980 | SvPV_set(sv, Nullch); |
4981 | SvLEN_set(sv, 0); | |
1c846c1f | 4982 | SvGROW(sv, len + 1); |
3f7c398e | 4983 | Move(pvx,SvPVX_const(sv),len,char); |
1c846c1f | 4984 | *SvEND(sv) = '\0'; |
5c98da1c | 4985 | unsharepvn(pvx, is_utf8 ? -(I32)len : len, hash); |
1c846c1f | 4986 | } |
923e4eb5 | 4987 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 4988 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 4989 | } |
765f542d | 4990 | #endif |
2213622d | 4991 | if (SvROK(sv)) |
840a7b70 | 4992 | sv_unref_flags(sv, flags); |
6fc92669 GS |
4993 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
4994 | sv_unglob(sv); | |
0f15f207 | 4995 | } |
1c846c1f | 4996 | |
645c22ef DM |
4997 | /* |
4998 | =for apidoc sv_force_normal | |
4999 | ||
5000 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
5001 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
5002 | an xpvmg. See also C<sv_force_normal_flags>. | |
5003 | ||
5004 | =cut | |
5005 | */ | |
5006 | ||
840a7b70 IZ |
5007 | void |
5008 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
5009 | { | |
5010 | sv_force_normal_flags(sv, 0); | |
5011 | } | |
5012 | ||
954c1994 GS |
5013 | /* |
5014 | =for apidoc sv_chop | |
5015 | ||
1c846c1f | 5016 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
5017 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
5018 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 5019 | string. Uses the "OOK hack". |
3f7c398e | 5020 | Beware: after this function returns, C<ptr> and SvPVX_const(sv) may no longer |
31869a79 | 5021 | refer to the same chunk of data. |
954c1994 GS |
5022 | |
5023 | =cut | |
5024 | */ | |
5025 | ||
79072805 | 5026 | void |
f54cb97a | 5027 | Perl_sv_chop(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
5028 | { |
5029 | register STRLEN delta; | |
a0d0e21e | 5030 | if (!ptr || !SvPOKp(sv)) |
79072805 | 5031 | return; |
3f7c398e | 5032 | delta = ptr - SvPVX_const(sv); |
2213622d | 5033 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
5034 | if (SvTYPE(sv) < SVt_PVIV) |
5035 | sv_upgrade(sv,SVt_PVIV); | |
5036 | ||
5037 | if (!SvOOK(sv)) { | |
50483b2c | 5038 | if (!SvLEN(sv)) { /* make copy of shared string */ |
3f7c398e | 5039 | const char *pvx = SvPVX_const(sv); |
50483b2c JD |
5040 | STRLEN len = SvCUR(sv); |
5041 | SvGROW(sv, len + 1); | |
3f7c398e | 5042 | Move(pvx,SvPVX_const(sv),len,char); |
50483b2c JD |
5043 | *SvEND(sv) = '\0'; |
5044 | } | |
45977657 | 5045 | SvIV_set(sv, 0); |
a4bfb290 AB |
5046 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
5047 | and we do that anyway inside the SvNIOK_off | |
5048 | */ | |
7a5fa8a2 | 5049 | SvFLAGS(sv) |= SVf_OOK; |
79072805 | 5050 | } |
a4bfb290 | 5051 | SvNIOK_off(sv); |
b162af07 SP |
5052 | SvLEN_set(sv, SvLEN(sv) - delta); |
5053 | SvCUR_set(sv, SvCUR(sv) - delta); | |
f880fe2f | 5054 | SvPV_set(sv, SvPVX(sv) + delta); |
45977657 | 5055 | SvIV_set(sv, SvIVX(sv) + delta); |
79072805 LW |
5056 | } |
5057 | ||
09540bc3 JH |
5058 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); |
5059 | * this function provided for binary compatibility only | |
5060 | */ | |
5061 | ||
5062 | void | |
5063 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
5064 | { | |
5065 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
5066 | } | |
5067 | ||
954c1994 GS |
5068 | /* |
5069 | =for apidoc sv_catpvn | |
5070 | ||
5071 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5072 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5073 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 5074 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 5075 | |
8d6d96c1 HS |
5076 | =for apidoc sv_catpvn_flags |
5077 | ||
5078 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
5079 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
5080 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
5081 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
5082 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
5083 | in terms of this function. | |
5084 | ||
5085 | =cut | |
5086 | */ | |
5087 | ||
5088 | void | |
5089 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
5090 | { | |
5091 | STRLEN dlen; | |
f54cb97a | 5092 | const char *dstr = SvPV_force_flags(dsv, dlen, flags); |
8d6d96c1 | 5093 | |
8d6d96c1 HS |
5094 | SvGROW(dsv, dlen + slen + 1); |
5095 | if (sstr == dstr) | |
3f7c398e | 5096 | sstr = SvPVX_const(dsv); |
8d6d96c1 | 5097 | Move(sstr, SvPVX(dsv) + dlen, slen, char); |
b162af07 | 5098 | SvCUR_set(dsv, SvCUR(dsv) + slen); |
8d6d96c1 HS |
5099 | *SvEND(dsv) = '\0'; |
5100 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
5101 | SvTAINT(dsv); | |
79072805 LW |
5102 | } |
5103 | ||
954c1994 GS |
5104 | /* |
5105 | =for apidoc sv_catpvn_mg | |
5106 | ||
5107 | Like C<sv_catpvn>, but also handles 'set' magic. | |
5108 | ||
5109 | =cut | |
5110 | */ | |
5111 | ||
79072805 | 5112 | void |
864dbfa3 | 5113 | Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
5114 | { |
5115 | sv_catpvn(sv,ptr,len); | |
5116 | SvSETMAGIC(sv); | |
5117 | } | |
5118 | ||
09540bc3 JH |
5119 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); |
5120 | * this function provided for binary compatibility only | |
5121 | */ | |
5122 | ||
5123 | void | |
5124 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
5125 | { | |
5126 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
5127 | } | |
5128 | ||
954c1994 GS |
5129 | /* |
5130 | =for apidoc sv_catsv | |
5131 | ||
13e8c8e3 JH |
5132 | Concatenates the string from SV C<ssv> onto the end of the string in |
5133 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
5134 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 5135 | |
8d6d96c1 HS |
5136 | =for apidoc sv_catsv_flags |
5137 | ||
5138 | Concatenates the string from SV C<ssv> onto the end of the string in | |
5139 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
5140 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
5141 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
5142 | ||
5143 | =cut */ | |
5144 | ||
ef50df4b | 5145 | void |
8d6d96c1 | 5146 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 5147 | { |
4d84ee25 | 5148 | const char *spv; |
13e8c8e3 | 5149 | STRLEN slen; |
46199a12 | 5150 | if (!ssv) |
79072805 | 5151 | return; |
4d84ee25 | 5152 | if ((spv = SvPV_const(ssv, slen))) { |
4fd84b44 AD |
5153 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
5154 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
8cf8f3d1 NIS |
5155 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously |
5156 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4fd84b44 AD |
5157 | dsv->sv_flags doesn't have that bit set. |
5158 | Andy Dougherty 12 Oct 2001 | |
5159 | */ | |
b464bac0 | 5160 | const I32 sutf8 = DO_UTF8(ssv); |
4fd84b44 | 5161 | I32 dutf8; |
13e8c8e3 | 5162 | |
8d6d96c1 HS |
5163 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
5164 | mg_get(dsv); | |
5165 | dutf8 = DO_UTF8(dsv); | |
5166 | ||
5167 | if (dutf8 != sutf8) { | |
13e8c8e3 | 5168 | if (dutf8) { |
46199a12 | 5169 | /* Not modifying source SV, so taking a temporary copy. */ |
8d6d96c1 | 5170 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 5171 | |
46199a12 | 5172 | sv_utf8_upgrade(csv); |
8d6d96c1 | 5173 | spv = SvPV(csv, slen); |
13e8c8e3 | 5174 | } |
8d6d96c1 HS |
5175 | else |
5176 | sv_utf8_upgrade_nomg(dsv); | |
e84ff256 | 5177 | } |
8d6d96c1 | 5178 | sv_catpvn_nomg(dsv, spv, slen); |
560a288e | 5179 | } |
79072805 LW |
5180 | } |
5181 | ||
954c1994 GS |
5182 | /* |
5183 | =for apidoc sv_catsv_mg | |
5184 | ||
5185 | Like C<sv_catsv>, but also handles 'set' magic. | |
5186 | ||
5187 | =cut | |
5188 | */ | |
5189 | ||
79072805 | 5190 | void |
46199a12 | 5191 | Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv) |
ef50df4b | 5192 | { |
46199a12 JH |
5193 | sv_catsv(dsv,ssv); |
5194 | SvSETMAGIC(dsv); | |
ef50df4b GS |
5195 | } |
5196 | ||
954c1994 GS |
5197 | /* |
5198 | =for apidoc sv_catpv | |
5199 | ||
5200 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
5201 | If the SV has the UTF-8 status set, then the bytes appended should be |
5202 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 5203 | |
d5ce4a7c | 5204 | =cut */ |
954c1994 | 5205 | |
ef50df4b | 5206 | void |
0c981600 | 5207 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
5208 | { |
5209 | register STRLEN len; | |
463ee0b2 | 5210 | STRLEN tlen; |
748a9306 | 5211 | char *junk; |
79072805 | 5212 | |
0c981600 | 5213 | if (!ptr) |
79072805 | 5214 | return; |
748a9306 | 5215 | junk = SvPV_force(sv, tlen); |
0c981600 | 5216 | len = strlen(ptr); |
463ee0b2 | 5217 | SvGROW(sv, tlen + len + 1); |
0c981600 | 5218 | if (ptr == junk) |
3f7c398e | 5219 | ptr = SvPVX_const(sv); |
0c981600 | 5220 | Move(ptr,SvPVX(sv)+tlen,len+1,char); |
b162af07 | 5221 | SvCUR_set(sv, SvCUR(sv) + len); |
d41ff1b8 | 5222 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 5223 | SvTAINT(sv); |
79072805 LW |
5224 | } |
5225 | ||
954c1994 GS |
5226 | /* |
5227 | =for apidoc sv_catpv_mg | |
5228 | ||
5229 | Like C<sv_catpv>, but also handles 'set' magic. | |
5230 | ||
5231 | =cut | |
5232 | */ | |
5233 | ||
ef50df4b | 5234 | void |
0c981600 | 5235 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 5236 | { |
0c981600 | 5237 | sv_catpv(sv,ptr); |
ef50df4b GS |
5238 | SvSETMAGIC(sv); |
5239 | } | |
5240 | ||
645c22ef DM |
5241 | /* |
5242 | =for apidoc newSV | |
5243 | ||
5244 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
5245 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
5246 | macro. | |
5247 | ||
5248 | =cut | |
5249 | */ | |
5250 | ||
79072805 | 5251 | SV * |
864dbfa3 | 5252 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
5253 | { |
5254 | register SV *sv; | |
1c846c1f | 5255 | |
4561caa4 | 5256 | new_SV(sv); |
79072805 LW |
5257 | if (len) { |
5258 | sv_upgrade(sv, SVt_PV); | |
5259 | SvGROW(sv, len + 1); | |
5260 | } | |
5261 | return sv; | |
5262 | } | |
954c1994 | 5263 | /* |
92110913 | 5264 | =for apidoc sv_magicext |
954c1994 | 5265 | |
68795e93 | 5266 | Adds magic to an SV, upgrading it if necessary. Applies the |
2d8d5d5a | 5267 | supplied vtable and returns a pointer to the magic added. |
92110913 | 5268 | |
2d8d5d5a SH |
5269 | Note that C<sv_magicext> will allow things that C<sv_magic> will not. |
5270 | In particular, you can add magic to SvREADONLY SVs, and add more than | |
5271 | one instance of the same 'how'. | |
645c22ef | 5272 | |
2d8d5d5a SH |
5273 | If C<namlen> is greater than zero then a C<savepvn> I<copy> of C<name> is |
5274 | stored, if C<namlen> is zero then C<name> is stored as-is and - as another | |
5275 | special case - if C<(name && namlen == HEf_SVKEY)> then C<name> is assumed | |
5276 | to contain an C<SV*> and is stored as-is with its REFCNT incremented. | |
92110913 | 5277 | |
2d8d5d5a | 5278 | (This is now used as a subroutine by C<sv_magic>.) |
954c1994 GS |
5279 | |
5280 | =cut | |
5281 | */ | |
92110913 | 5282 | MAGIC * |
e1ec3a88 | 5283 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, const MGVTBL *vtable, |
92110913 | 5284 | const char* name, I32 namlen) |
79072805 LW |
5285 | { |
5286 | MAGIC* mg; | |
68795e93 | 5287 | |
92110913 | 5288 | if (SvTYPE(sv) < SVt_PVMG) { |
862a34c6 | 5289 | SvUPGRADE(sv, SVt_PVMG); |
463ee0b2 | 5290 | } |
79072805 LW |
5291 | Newz(702,mg, 1, MAGIC); |
5292 | mg->mg_moremagic = SvMAGIC(sv); | |
b162af07 | 5293 | SvMAGIC_set(sv, mg); |
75f9d97a | 5294 | |
05f95b08 SB |
5295 | /* Sometimes a magic contains a reference loop, where the sv and |
5296 | object refer to each other. To prevent a reference loop that | |
5297 | would prevent such objects being freed, we look for such loops | |
5298 | and if we find one we avoid incrementing the object refcount. | |
87f0b213 JH |
5299 | |
5300 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 5301 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
5302 | |
5303 | */ | |
14befaf4 DM |
5304 | if (!obj || obj == sv || |
5305 | how == PERL_MAGIC_arylen || | |
5306 | how == PERL_MAGIC_qr || | |
8d2f4536 | 5307 | how == PERL_MAGIC_symtab || |
75f9d97a JH |
5308 | (SvTYPE(obj) == SVt_PVGV && |
5309 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
5310 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 5311 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 5312 | { |
8990e307 | 5313 | mg->mg_obj = obj; |
75f9d97a | 5314 | } |
85e6fe83 | 5315 | else { |
8990e307 | 5316 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
5317 | mg->mg_flags |= MGf_REFCOUNTED; |
5318 | } | |
b5ccf5f2 YST |
5319 | |
5320 | /* Normal self-ties simply pass a null object, and instead of | |
5321 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
5322 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
5323 | with an RV obj pointing to the glob containing the PVIO. In | |
5324 | this case, to avoid a reference loop, we need to weaken the | |
5325 | reference. | |
5326 | */ | |
5327 | ||
5328 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
5329 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
5330 | { | |
5331 | sv_rvweaken(obj); | |
5332 | } | |
5333 | ||
79072805 | 5334 | mg->mg_type = how; |
565764a8 | 5335 | mg->mg_len = namlen; |
9cbac4c7 | 5336 | if (name) { |
92110913 | 5337 | if (namlen > 0) |
1edc1566 | 5338 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 5339 | else if (namlen == HEf_SVKEY) |
1edc1566 | 5340 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 5341 | else |
92110913 | 5342 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 5343 | } |
92110913 | 5344 | mg->mg_virtual = vtable; |
68795e93 | 5345 | |
92110913 NIS |
5346 | mg_magical(sv); |
5347 | if (SvGMAGICAL(sv)) | |
5348 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
5349 | return mg; | |
5350 | } | |
5351 | ||
5352 | /* | |
5353 | =for apidoc sv_magic | |
1c846c1f | 5354 | |
92110913 NIS |
5355 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
5356 | then adds a new magic item of type C<how> to the head of the magic list. | |
5357 | ||
2d8d5d5a SH |
5358 | See C<sv_magicext> (which C<sv_magic> now calls) for a description of the |
5359 | handling of the C<name> and C<namlen> arguments. | |
5360 | ||
4509d3fb SB |
5361 | You need to use C<sv_magicext> to add magic to SvREADONLY SVs and also |
5362 | to add more than one instance of the same 'how'. | |
5363 | ||
92110913 NIS |
5364 | =cut |
5365 | */ | |
5366 | ||
5367 | void | |
5368 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 5369 | { |
e1ec3a88 | 5370 | const MGVTBL *vtable = 0; |
92110913 | 5371 | MAGIC* mg; |
92110913 | 5372 | |
765f542d NC |
5373 | #ifdef PERL_COPY_ON_WRITE |
5374 | if (SvIsCOW(sv)) | |
5375 | sv_force_normal_flags(sv, 0); | |
5376 | #endif | |
92110913 | 5377 | if (SvREADONLY(sv)) { |
923e4eb5 | 5378 | if (IN_PERL_RUNTIME |
92110913 NIS |
5379 | && how != PERL_MAGIC_regex_global |
5380 | && how != PERL_MAGIC_bm | |
5381 | && how != PERL_MAGIC_fm | |
5382 | && how != PERL_MAGIC_sv | |
e6469971 | 5383 | && how != PERL_MAGIC_backref |
92110913 NIS |
5384 | ) |
5385 | { | |
5386 | Perl_croak(aTHX_ PL_no_modify); | |
5387 | } | |
5388 | } | |
5389 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
5390 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
5391 | /* sv_magic() refuses to add a magic of the same 'how' as an |
5392 | existing one | |
92110913 NIS |
5393 | */ |
5394 | if (how == PERL_MAGIC_taint) | |
5395 | mg->mg_len |= 1; | |
5396 | return; | |
5397 | } | |
5398 | } | |
68795e93 | 5399 | |
79072805 | 5400 | switch (how) { |
14befaf4 | 5401 | case PERL_MAGIC_sv: |
92110913 | 5402 | vtable = &PL_vtbl_sv; |
79072805 | 5403 | break; |
14befaf4 | 5404 | case PERL_MAGIC_overload: |
92110913 | 5405 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 5406 | break; |
14befaf4 | 5407 | case PERL_MAGIC_overload_elem: |
92110913 | 5408 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 5409 | break; |
14befaf4 | 5410 | case PERL_MAGIC_overload_table: |
92110913 | 5411 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 5412 | break; |
14befaf4 | 5413 | case PERL_MAGIC_bm: |
92110913 | 5414 | vtable = &PL_vtbl_bm; |
79072805 | 5415 | break; |
14befaf4 | 5416 | case PERL_MAGIC_regdata: |
92110913 | 5417 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 5418 | break; |
14befaf4 | 5419 | case PERL_MAGIC_regdatum: |
92110913 | 5420 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 5421 | break; |
14befaf4 | 5422 | case PERL_MAGIC_env: |
92110913 | 5423 | vtable = &PL_vtbl_env; |
79072805 | 5424 | break; |
14befaf4 | 5425 | case PERL_MAGIC_fm: |
92110913 | 5426 | vtable = &PL_vtbl_fm; |
55497cff | 5427 | break; |
14befaf4 | 5428 | case PERL_MAGIC_envelem: |
92110913 | 5429 | vtable = &PL_vtbl_envelem; |
79072805 | 5430 | break; |
14befaf4 | 5431 | case PERL_MAGIC_regex_global: |
92110913 | 5432 | vtable = &PL_vtbl_mglob; |
93a17b20 | 5433 | break; |
14befaf4 | 5434 | case PERL_MAGIC_isa: |
92110913 | 5435 | vtable = &PL_vtbl_isa; |
463ee0b2 | 5436 | break; |
14befaf4 | 5437 | case PERL_MAGIC_isaelem: |
92110913 | 5438 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 5439 | break; |
14befaf4 | 5440 | case PERL_MAGIC_nkeys: |
92110913 | 5441 | vtable = &PL_vtbl_nkeys; |
16660edb | 5442 | break; |
14befaf4 | 5443 | case PERL_MAGIC_dbfile: |
92110913 | 5444 | vtable = 0; |
93a17b20 | 5445 | break; |
14befaf4 | 5446 | case PERL_MAGIC_dbline: |
92110913 | 5447 | vtable = &PL_vtbl_dbline; |
79072805 | 5448 | break; |
36477c24 | 5449 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 5450 | case PERL_MAGIC_collxfrm: |
92110913 | 5451 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 5452 | break; |
36477c24 | 5453 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 5454 | case PERL_MAGIC_tied: |
92110913 | 5455 | vtable = &PL_vtbl_pack; |
463ee0b2 | 5456 | break; |
14befaf4 DM |
5457 | case PERL_MAGIC_tiedelem: |
5458 | case PERL_MAGIC_tiedscalar: | |
92110913 | 5459 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 5460 | break; |
14befaf4 | 5461 | case PERL_MAGIC_qr: |
92110913 | 5462 | vtable = &PL_vtbl_regexp; |
c277df42 | 5463 | break; |
14befaf4 | 5464 | case PERL_MAGIC_sig: |
92110913 | 5465 | vtable = &PL_vtbl_sig; |
79072805 | 5466 | break; |
14befaf4 | 5467 | case PERL_MAGIC_sigelem: |
92110913 | 5468 | vtable = &PL_vtbl_sigelem; |
79072805 | 5469 | break; |
14befaf4 | 5470 | case PERL_MAGIC_taint: |
92110913 | 5471 | vtable = &PL_vtbl_taint; |
463ee0b2 | 5472 | break; |
14befaf4 | 5473 | case PERL_MAGIC_uvar: |
92110913 | 5474 | vtable = &PL_vtbl_uvar; |
79072805 | 5475 | break; |
14befaf4 | 5476 | case PERL_MAGIC_vec: |
92110913 | 5477 | vtable = &PL_vtbl_vec; |
79072805 | 5478 | break; |
a3874608 | 5479 | case PERL_MAGIC_arylen_p: |
bfcb3514 | 5480 | case PERL_MAGIC_rhash: |
8d2f4536 | 5481 | case PERL_MAGIC_symtab: |
ece467f9 JP |
5482 | case PERL_MAGIC_vstring: |
5483 | vtable = 0; | |
5484 | break; | |
7e8c5dac HS |
5485 | case PERL_MAGIC_utf8: |
5486 | vtable = &PL_vtbl_utf8; | |
5487 | break; | |
14befaf4 | 5488 | case PERL_MAGIC_substr: |
92110913 | 5489 | vtable = &PL_vtbl_substr; |
79072805 | 5490 | break; |
14befaf4 | 5491 | case PERL_MAGIC_defelem: |
92110913 | 5492 | vtable = &PL_vtbl_defelem; |
5f05dabc | 5493 | break; |
14befaf4 | 5494 | case PERL_MAGIC_glob: |
92110913 | 5495 | vtable = &PL_vtbl_glob; |
79072805 | 5496 | break; |
14befaf4 | 5497 | case PERL_MAGIC_arylen: |
92110913 | 5498 | vtable = &PL_vtbl_arylen; |
79072805 | 5499 | break; |
14befaf4 | 5500 | case PERL_MAGIC_pos: |
92110913 | 5501 | vtable = &PL_vtbl_pos; |
a0d0e21e | 5502 | break; |
14befaf4 | 5503 | case PERL_MAGIC_backref: |
92110913 | 5504 | vtable = &PL_vtbl_backref; |
810b8aa5 | 5505 | break; |
14befaf4 DM |
5506 | case PERL_MAGIC_ext: |
5507 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
5508 | /* Useful for attaching extension internal data to perl vars. */ |
5509 | /* Note that multiple extensions may clash if magical scalars */ | |
5510 | /* etc holding private data from one are passed to another. */ | |
a0d0e21e | 5511 | break; |
79072805 | 5512 | default: |
14befaf4 | 5513 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 5514 | } |
68795e93 | 5515 | |
92110913 | 5516 | /* Rest of work is done else where */ |
27da23d5 | 5517 | mg = sv_magicext(sv,obj,how,(MGVTBL*)vtable,name,namlen); |
68795e93 | 5518 | |
92110913 NIS |
5519 | switch (how) { |
5520 | case PERL_MAGIC_taint: | |
5521 | mg->mg_len = 1; | |
5522 | break; | |
5523 | case PERL_MAGIC_ext: | |
5524 | case PERL_MAGIC_dbfile: | |
5525 | SvRMAGICAL_on(sv); | |
5526 | break; | |
5527 | } | |
463ee0b2 LW |
5528 | } |
5529 | ||
c461cf8f JH |
5530 | /* |
5531 | =for apidoc sv_unmagic | |
5532 | ||
645c22ef | 5533 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
5534 | |
5535 | =cut | |
5536 | */ | |
5537 | ||
463ee0b2 | 5538 | int |
864dbfa3 | 5539 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
5540 | { |
5541 | MAGIC* mg; | |
5542 | MAGIC** mgp; | |
91bba347 | 5543 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
5544 | return 0; |
5545 | mgp = &SvMAGIC(sv); | |
5546 | for (mg = *mgp; mg; mg = *mgp) { | |
5547 | if (mg->mg_type == type) { | |
e1ec3a88 | 5548 | const MGVTBL* const vtbl = mg->mg_virtual; |
463ee0b2 | 5549 | *mgp = mg->mg_moremagic; |
1d7c1841 | 5550 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 5551 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 5552 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 5553 | if (mg->mg_len > 0) |
1edc1566 | 5554 | Safefree(mg->mg_ptr); |
565764a8 | 5555 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 5556 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
5557 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
5558 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 5559 | } |
a0d0e21e LW |
5560 | if (mg->mg_flags & MGf_REFCOUNTED) |
5561 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5562 | Safefree(mg); |
5563 | } | |
5564 | else | |
5565 | mgp = &mg->mg_moremagic; | |
79072805 | 5566 | } |
91bba347 | 5567 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5568 | SvMAGICAL_off(sv); |
06759ea0 | 5569 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5570 | } |
5571 | ||
5572 | return 0; | |
79072805 LW |
5573 | } |
5574 | ||
c461cf8f JH |
5575 | /* |
5576 | =for apidoc sv_rvweaken | |
5577 | ||
645c22ef DM |
5578 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5579 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5580 | push a back-reference to this RV onto the array of backreferences | |
5581 | associated with that magic. | |
c461cf8f JH |
5582 | |
5583 | =cut | |
5584 | */ | |
5585 | ||
810b8aa5 | 5586 | SV * |
864dbfa3 | 5587 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5588 | { |
5589 | SV *tsv; | |
5590 | if (!SvOK(sv)) /* let undefs pass */ | |
5591 | return sv; | |
5592 | if (!SvROK(sv)) | |
cea2e8a9 | 5593 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5594 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5595 | if (ckWARN(WARN_MISC)) |
9014280d | 5596 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5597 | return sv; |
5598 | } | |
5599 | tsv = SvRV(sv); | |
5600 | sv_add_backref(tsv, sv); | |
5601 | SvWEAKREF_on(sv); | |
1c846c1f | 5602 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5603 | return sv; |
5604 | } | |
5605 | ||
645c22ef DM |
5606 | /* Give tsv backref magic if it hasn't already got it, then push a |
5607 | * back-reference to sv onto the array associated with the backref magic. | |
5608 | */ | |
5609 | ||
810b8aa5 | 5610 | STATIC void |
cea2e8a9 | 5611 | S_sv_add_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5612 | { |
5613 | AV *av; | |
5614 | MAGIC *mg; | |
14befaf4 | 5615 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5616 | av = (AV*)mg->mg_obj; |
5617 | else { | |
5618 | av = newAV(); | |
14befaf4 | 5619 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
d99b02a1 DM |
5620 | /* av now has a refcnt of 2, which avoids it getting freed |
5621 | * before us during global cleanup. The extra ref is removed | |
5622 | * by magic_killbackrefs() when tsv is being freed */ | |
810b8aa5 | 5623 | } |
d91d49e8 | 5624 | if (AvFILLp(av) >= AvMAX(av)) { |
fdc9a813 | 5625 | I32 i; |
d91d49e8 | 5626 | SV **svp = AvARRAY(av); |
fdc9a813 AE |
5627 | for (i = AvFILLp(av); i >= 0; i--) |
5628 | if (!svp[i]) { | |
d91d49e8 MM |
5629 | svp[i] = sv; /* reuse the slot */ |
5630 | return; | |
5631 | } | |
d91d49e8 MM |
5632 | av_extend(av, AvFILLp(av)+1); |
5633 | } | |
5634 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5635 | } |
5636 | ||
645c22ef DM |
5637 | /* delete a back-reference to ourselves from the backref magic associated |
5638 | * with the SV we point to. | |
5639 | */ | |
5640 | ||
1c846c1f | 5641 | STATIC void |
cea2e8a9 | 5642 | S_sv_del_backref(pTHX_ SV *sv) |
810b8aa5 GS |
5643 | { |
5644 | AV *av; | |
5645 | SV **svp; | |
5646 | I32 i; | |
5647 | SV *tsv = SvRV(sv); | |
c04a4dfe | 5648 | MAGIC *mg = NULL; |
14befaf4 | 5649 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5650 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5651 | av = (AV *)mg->mg_obj; |
5652 | svp = AvARRAY(av); | |
fdc9a813 AE |
5653 | for (i = AvFILLp(av); i >= 0; i--) |
5654 | if (svp[i] == sv) svp[i] = Nullsv; | |
810b8aa5 GS |
5655 | } |
5656 | ||
954c1994 GS |
5657 | /* |
5658 | =for apidoc sv_insert | |
5659 | ||
5660 | Inserts a string at the specified offset/length within the SV. Similar to | |
5661 | the Perl substr() function. | |
5662 | ||
5663 | =cut | |
5664 | */ | |
5665 | ||
79072805 | 5666 | void |
e1ec3a88 | 5667 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, const char *little, STRLEN littlelen) |
79072805 LW |
5668 | { |
5669 | register char *big; | |
5670 | register char *mid; | |
5671 | register char *midend; | |
5672 | register char *bigend; | |
5673 | register I32 i; | |
6ff81951 | 5674 | STRLEN curlen; |
1c846c1f | 5675 | |
79072805 | 5676 | |
8990e307 | 5677 | if (!bigstr) |
cea2e8a9 | 5678 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5679 | SvPV_force(bigstr, curlen); |
60fa28ff | 5680 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5681 | if (offset + len > curlen) { |
5682 | SvGROW(bigstr, offset+len+1); | |
3f7c398e | 5683 | Zero(SvPVX_const(bigstr)+curlen, offset+len-curlen, char); |
6ff81951 GS |
5684 | SvCUR_set(bigstr, offset+len); |
5685 | } | |
79072805 | 5686 | |
69b47968 | 5687 | SvTAINT(bigstr); |
79072805 LW |
5688 | i = littlelen - len; |
5689 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5690 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5691 | mid = big + offset + len; |
5692 | midend = bigend = big + SvCUR(bigstr); | |
5693 | bigend += i; | |
5694 | *bigend = '\0'; | |
5695 | while (midend > mid) /* shove everything down */ | |
5696 | *--bigend = *--midend; | |
5697 | Move(little,big+offset,littlelen,char); | |
b162af07 | 5698 | SvCUR_set(bigstr, SvCUR(bigstr) + i); |
79072805 LW |
5699 | SvSETMAGIC(bigstr); |
5700 | return; | |
5701 | } | |
5702 | else if (i == 0) { | |
463ee0b2 | 5703 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5704 | SvSETMAGIC(bigstr); |
5705 | return; | |
5706 | } | |
5707 | ||
463ee0b2 | 5708 | big = SvPVX(bigstr); |
79072805 LW |
5709 | mid = big + offset; |
5710 | midend = mid + len; | |
5711 | bigend = big + SvCUR(bigstr); | |
5712 | ||
5713 | if (midend > bigend) | |
cea2e8a9 | 5714 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5715 | |
5716 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5717 | if (littlelen) { | |
5718 | Move(little, mid, littlelen,char); | |
5719 | mid += littlelen; | |
5720 | } | |
5721 | i = bigend - midend; | |
5722 | if (i > 0) { | |
5723 | Move(midend, mid, i,char); | |
5724 | mid += i; | |
5725 | } | |
5726 | *mid = '\0'; | |
5727 | SvCUR_set(bigstr, mid - big); | |
5728 | } | |
5729 | /*SUPPRESS 560*/ | |
155aba94 | 5730 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5731 | midend -= littlelen; |
5732 | mid = midend; | |
5733 | sv_chop(bigstr,midend-i); | |
5734 | big += i; | |
5735 | while (i--) | |
5736 | *--midend = *--big; | |
5737 | if (littlelen) | |
5738 | Move(little, mid, littlelen,char); | |
5739 | } | |
5740 | else if (littlelen) { | |
5741 | midend -= littlelen; | |
5742 | sv_chop(bigstr,midend); | |
5743 | Move(little,midend,littlelen,char); | |
5744 | } | |
5745 | else { | |
5746 | sv_chop(bigstr,midend); | |
5747 | } | |
5748 | SvSETMAGIC(bigstr); | |
5749 | } | |
5750 | ||
c461cf8f JH |
5751 | /* |
5752 | =for apidoc sv_replace | |
5753 | ||
5754 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5755 | The target SV physically takes over ownership of the body of the source SV |
5756 | and inherits its flags; however, the target keeps any magic it owns, | |
5757 | and any magic in the source is discarded. | |
ff276b08 | 5758 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5759 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5760 | |
5761 | =cut | |
5762 | */ | |
79072805 LW |
5763 | |
5764 | void | |
864dbfa3 | 5765 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 | 5766 | { |
a3b680e6 | 5767 | const U32 refcnt = SvREFCNT(sv); |
765f542d | 5768 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
0453d815 | 5769 | if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL)) |
9014280d | 5770 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Reference miscount in sv_replace()"); |
93a17b20 | 5771 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5772 | if (SvMAGICAL(nsv)) |
5773 | mg_free(nsv); | |
5774 | else | |
5775 | sv_upgrade(nsv, SVt_PVMG); | |
b162af07 | 5776 | SvMAGIC_set(nsv, SvMAGIC(sv)); |
a0d0e21e | 5777 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 | 5778 | SvMAGICAL_off(sv); |
b162af07 | 5779 | SvMAGIC_set(sv, NULL); |
93a17b20 | 5780 | } |
79072805 LW |
5781 | SvREFCNT(sv) = 0; |
5782 | sv_clear(sv); | |
477f5d66 | 5783 | assert(!SvREFCNT(sv)); |
fd0854ff DM |
5784 | #ifdef DEBUG_LEAKING_SCALARS |
5785 | sv->sv_flags = nsv->sv_flags; | |
5786 | sv->sv_any = nsv->sv_any; | |
5787 | sv->sv_refcnt = nsv->sv_refcnt; | |
5788 | #else | |
79072805 | 5789 | StructCopy(nsv,sv,SV); |
fd0854ff | 5790 | #endif |
7b2c381c NC |
5791 | /* Currently could join these into one piece of pointer arithmetic, but |
5792 | it would be unclear. */ | |
5793 | if(SvTYPE(sv) == SVt_IV) | |
5794 | SvANY(sv) | |
339049b0 | 5795 | = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
7b2c381c | 5796 | else if (SvTYPE(sv) == SVt_RV) { |
339049b0 | 5797 | SvANY(sv) = &sv->sv_u.svu_rv; |
7b2c381c NC |
5798 | } |
5799 | ||
fd0854ff | 5800 | |
d3d0e6f1 NC |
5801 | #ifdef PERL_COPY_ON_WRITE |
5802 | if (SvIsCOW_normal(nsv)) { | |
5803 | /* We need to follow the pointers around the loop to make the | |
5804 | previous SV point to sv, rather than nsv. */ | |
5805 | SV *next; | |
5806 | SV *current = nsv; | |
5807 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5808 | assert(next); | |
5809 | current = next; | |
3f7c398e | 5810 | assert(SvPVX_const(current) == SvPVX_const(nsv)); |
d3d0e6f1 NC |
5811 | } |
5812 | /* Make the SV before us point to the SV after us. */ | |
5813 | if (DEBUG_C_TEST) { | |
5814 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5815 | sv_dump(current); | |
a29f6d03 NC |
5816 | PerlIO_printf(Perl_debug_log, |
5817 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5818 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5819 | } | |
a29f6d03 | 5820 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5821 | } |
5822 | #endif | |
79072805 | 5823 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5824 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 5825 | SvREFCNT(nsv) = 0; |
463ee0b2 | 5826 | del_SV(nsv); |
79072805 LW |
5827 | } |
5828 | ||
c461cf8f JH |
5829 | /* |
5830 | =for apidoc sv_clear | |
5831 | ||
645c22ef DM |
5832 | Clear an SV: call any destructors, free up any memory used by the body, |
5833 | and free the body itself. The SV's head is I<not> freed, although | |
5834 | its type is set to all 1's so that it won't inadvertently be assumed | |
5835 | to be live during global destruction etc. | |
5836 | This function should only be called when REFCNT is zero. Most of the time | |
5837 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5838 | instead. | |
c461cf8f JH |
5839 | |
5840 | =cut | |
5841 | */ | |
5842 | ||
79072805 | 5843 | void |
864dbfa3 | 5844 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5845 | { |
27da23d5 | 5846 | dVAR; |
ec12f114 | 5847 | HV* stash; |
79072805 LW |
5848 | assert(sv); |
5849 | assert(SvREFCNT(sv) == 0); | |
5850 | ||
ed6116ce | 5851 | if (SvOBJECT(sv)) { |
3280af22 | 5852 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5853 | dSP; |
d460ef45 | 5854 | do { |
b464bac0 | 5855 | CV* destructor; |
4e8e7886 | 5856 | stash = SvSTASH(sv); |
32251b26 | 5857 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5858 | if (destructor) { |
5cc433a6 AB |
5859 | SV* tmpref = newRV(sv); |
5860 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ | |
4e8e7886 | 5861 | ENTER; |
e788e7d3 | 5862 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5863 | EXTEND(SP, 2); |
5864 | PUSHMARK(SP); | |
5cc433a6 | 5865 | PUSHs(tmpref); |
4e8e7886 | 5866 | PUTBACK; |
44389ee9 | 5867 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
7a5fa8a2 NIS |
5868 | |
5869 | ||
d3acc0f7 | 5870 | POPSTACK; |
3095d977 | 5871 | SPAGAIN; |
4e8e7886 | 5872 | LEAVE; |
5cc433a6 AB |
5873 | if(SvREFCNT(tmpref) < 2) { |
5874 | /* tmpref is not kept alive! */ | |
5875 | SvREFCNT(sv)--; | |
b162af07 | 5876 | SvRV_set(tmpref, NULL); |
5cc433a6 AB |
5877 | SvROK_off(tmpref); |
5878 | } | |
5879 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5880 | } |
5881 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5882 | |
6f44e0a4 JP |
5883 | |
5884 | if (SvREFCNT(sv)) { | |
5885 | if (PL_in_clean_objs) | |
cea2e8a9 | 5886 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
bfcb3514 | 5887 | HvNAME_get(stash)); |
6f44e0a4 JP |
5888 | /* DESTROY gave object new lease on life */ |
5889 | return; | |
5890 | } | |
a0d0e21e | 5891 | } |
4e8e7886 | 5892 | |
a0d0e21e | 5893 | if (SvOBJECT(sv)) { |
4e8e7886 | 5894 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e LW |
5895 | SvOBJECT_off(sv); /* Curse the object. */ |
5896 | if (SvTYPE(sv) != SVt_PVIO) | |
3280af22 | 5897 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5898 | } |
463ee0b2 | 5899 | } |
524189f1 JH |
5900 | if (SvTYPE(sv) >= SVt_PVMG) { |
5901 | if (SvMAGIC(sv)) | |
5902 | mg_free(sv); | |
bce8f412 | 5903 | if (SvTYPE(sv) == SVt_PVMG && SvFLAGS(sv) & SVpad_TYPED) |
524189f1 JH |
5904 | SvREFCNT_dec(SvSTASH(sv)); |
5905 | } | |
ec12f114 | 5906 | stash = NULL; |
79072805 | 5907 | switch (SvTYPE(sv)) { |
8990e307 | 5908 | case SVt_PVIO: |
df0bd2f4 GS |
5909 | if (IoIFP(sv) && |
5910 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5911 | IoIFP(sv) != PerlIO_stdout() && |
5912 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5913 | { |
f2b5be74 | 5914 | io_close((IO*)sv, FALSE); |
93578b34 | 5915 | } |
1d7c1841 | 5916 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5917 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5918 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5919 | Safefree(IoTOP_NAME(sv)); |
5920 | Safefree(IoFMT_NAME(sv)); | |
5921 | Safefree(IoBOTTOM_NAME(sv)); | |
a0d0e21e | 5922 | /* FALL THROUGH */ |
79072805 | 5923 | case SVt_PVBM: |
a0d0e21e | 5924 | goto freescalar; |
79072805 | 5925 | case SVt_PVCV: |
748a9306 | 5926 | case SVt_PVFM: |
85e6fe83 | 5927 | cv_undef((CV*)sv); |
a0d0e21e | 5928 | goto freescalar; |
79072805 | 5929 | case SVt_PVHV: |
85e6fe83 | 5930 | hv_undef((HV*)sv); |
a0d0e21e | 5931 | break; |
79072805 | 5932 | case SVt_PVAV: |
85e6fe83 | 5933 | av_undef((AV*)sv); |
a0d0e21e | 5934 | break; |
02270b4e | 5935 | case SVt_PVLV: |
dd28f7bb DM |
5936 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5937 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5938 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5939 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5940 | } | |
5941 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5942 | SvREFCNT_dec(LvTARG(sv)); | |
02270b4e | 5943 | goto freescalar; |
a0d0e21e | 5944 | case SVt_PVGV: |
1edc1566 | 5945 | gp_free((GV*)sv); |
a0d0e21e | 5946 | Safefree(GvNAME(sv)); |
ec12f114 JPC |
5947 | /* cannot decrease stash refcount yet, as we might recursively delete |
5948 | ourselves when the refcnt drops to zero. Delay SvREFCNT_dec | |
5949 | of stash until current sv is completely gone. | |
5950 | -- JohnPC, 27 Mar 1998 */ | |
5951 | stash = GvSTASH(sv); | |
a0d0e21e | 5952 | /* FALL THROUGH */ |
79072805 | 5953 | case SVt_PVMG: |
79072805 LW |
5954 | case SVt_PVNV: |
5955 | case SVt_PVIV: | |
a0d0e21e | 5956 | freescalar: |
5228ca4e NC |
5957 | /* Don't bother with SvOOK_off(sv); as we're only going to free it. */ |
5958 | if (SvOOK(sv)) { | |
5959 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); | |
5960 | /* Don't even bother with turning off the OOK flag. */ | |
5961 | } | |
79072805 LW |
5962 | /* FALL THROUGH */ |
5963 | case SVt_PV: | |
a0d0e21e | 5964 | case SVt_RV: |
810b8aa5 GS |
5965 | if (SvROK(sv)) { |
5966 | if (SvWEAKREF(sv)) | |
5967 | sv_del_backref(sv); | |
5968 | else | |
5969 | SvREFCNT_dec(SvRV(sv)); | |
5970 | } | |
765f542d | 5971 | #ifdef PERL_COPY_ON_WRITE |
3f7c398e | 5972 | else if (SvPVX_const(sv)) { |
765f542d NC |
5973 | if (SvIsCOW(sv)) { |
5974 | /* I believe I need to grab the global SV mutex here and | |
5975 | then recheck the COW status. */ | |
46187eeb NC |
5976 | if (DEBUG_C_TEST) { |
5977 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5978 | sv_dump(sv); |
46187eeb | 5979 | } |
3f7c398e | 5980 | sv_release_COW(sv, SvPVX_const(sv), SvCUR(sv), SvLEN(sv), |
765f542d NC |
5981 | SvUVX(sv), SV_COW_NEXT_SV(sv)); |
5982 | /* And drop it here. */ | |
5983 | SvFAKE_off(sv); | |
5984 | } else if (SvLEN(sv)) { | |
3f7c398e | 5985 | Safefree(SvPVX_const(sv)); |
765f542d NC |
5986 | } |
5987 | } | |
5988 | #else | |
3f7c398e SP |
5989 | else if (SvPVX_const(sv) && SvLEN(sv)) |
5990 | Safefree(SvPVX_const(sv)); | |
5991 | else if (SvPVX_const(sv) && SvREADONLY(sv) && SvFAKE(sv)) { | |
5992 | unsharepvn(SvPVX_const(sv), | |
25716404 GS |
5993 | SvUTF8(sv) ? -(I32)SvCUR(sv) : SvCUR(sv), |
5994 | SvUVX(sv)); | |
1c846c1f NIS |
5995 | SvFAKE_off(sv); |
5996 | } | |
765f542d | 5997 | #endif |
79072805 | 5998 | break; |
a0d0e21e | 5999 | /* |
79072805 | 6000 | case SVt_NV: |
79072805 | 6001 | case SVt_IV: |
79072805 LW |
6002 | case SVt_NULL: |
6003 | break; | |
a0d0e21e | 6004 | */ |
79072805 LW |
6005 | } |
6006 | ||
6007 | switch (SvTYPE(sv)) { | |
6008 | case SVt_NULL: | |
6009 | break; | |
79072805 | 6010 | case SVt_IV: |
79072805 LW |
6011 | break; |
6012 | case SVt_NV: | |
6013 | del_XNV(SvANY(sv)); | |
6014 | break; | |
ed6116ce | 6015 | case SVt_RV: |
ed6116ce | 6016 | break; |
79072805 LW |
6017 | case SVt_PV: |
6018 | del_XPV(SvANY(sv)); | |
6019 | break; | |
6020 | case SVt_PVIV: | |
6021 | del_XPVIV(SvANY(sv)); | |
6022 | break; | |
6023 | case SVt_PVNV: | |
6024 | del_XPVNV(SvANY(sv)); | |
6025 | break; | |
6026 | case SVt_PVMG: | |
6027 | del_XPVMG(SvANY(sv)); | |
6028 | break; | |
6029 | case SVt_PVLV: | |
6030 | del_XPVLV(SvANY(sv)); | |
6031 | break; | |
6032 | case SVt_PVAV: | |
6033 | del_XPVAV(SvANY(sv)); | |
6034 | break; | |
6035 | case SVt_PVHV: | |
6036 | del_XPVHV(SvANY(sv)); | |
6037 | break; | |
6038 | case SVt_PVCV: | |
6039 | del_XPVCV(SvANY(sv)); | |
6040 | break; | |
6041 | case SVt_PVGV: | |
6042 | del_XPVGV(SvANY(sv)); | |
ec12f114 JPC |
6043 | /* code duplication for increased performance. */ |
6044 | SvFLAGS(sv) &= SVf_BREAK; | |
6045 | SvFLAGS(sv) |= SVTYPEMASK; | |
6046 | /* decrease refcount of the stash that owns this GV, if any */ | |
6047 | if (stash) | |
6048 | SvREFCNT_dec(stash); | |
6049 | return; /* not break, SvFLAGS reset already happened */ | |
79072805 LW |
6050 | case SVt_PVBM: |
6051 | del_XPVBM(SvANY(sv)); | |
6052 | break; | |
6053 | case SVt_PVFM: | |
6054 | del_XPVFM(SvANY(sv)); | |
6055 | break; | |
8990e307 LW |
6056 | case SVt_PVIO: |
6057 | del_XPVIO(SvANY(sv)); | |
6058 | break; | |
79072805 | 6059 | } |
a0d0e21e | 6060 | SvFLAGS(sv) &= SVf_BREAK; |
8990e307 | 6061 | SvFLAGS(sv) |= SVTYPEMASK; |
79072805 LW |
6062 | } |
6063 | ||
645c22ef DM |
6064 | /* |
6065 | =for apidoc sv_newref | |
6066 | ||
6067 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
6068 | instead. | |
6069 | ||
6070 | =cut | |
6071 | */ | |
6072 | ||
79072805 | 6073 | SV * |
864dbfa3 | 6074 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 6075 | { |
463ee0b2 | 6076 | if (sv) |
4db098f4 | 6077 | (SvREFCNT(sv))++; |
79072805 LW |
6078 | return sv; |
6079 | } | |
6080 | ||
c461cf8f JH |
6081 | /* |
6082 | =for apidoc sv_free | |
6083 | ||
645c22ef DM |
6084 | Decrement an SV's reference count, and if it drops to zero, call |
6085 | C<sv_clear> to invoke destructors and free up any memory used by | |
6086 | the body; finally, deallocate the SV's head itself. | |
6087 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
6088 | |
6089 | =cut | |
6090 | */ | |
6091 | ||
79072805 | 6092 | void |
864dbfa3 | 6093 | Perl_sv_free(pTHX_ SV *sv) |
79072805 | 6094 | { |
27da23d5 | 6095 | dVAR; |
79072805 LW |
6096 | if (!sv) |
6097 | return; | |
a0d0e21e LW |
6098 | if (SvREFCNT(sv) == 0) { |
6099 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
6100 | /* this SV's refcnt has been artificially decremented to |
6101 | * trigger cleanup */ | |
a0d0e21e | 6102 | return; |
3280af22 | 6103 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 6104 | return; |
d689ffdd JP |
6105 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6106 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6107 | SvREFCNT(sv) = (~(U32)0)/2; | |
6108 | return; | |
6109 | } | |
0453d815 | 6110 | if (ckWARN_d(WARN_INTERNAL)) |
d5dede04 | 6111 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
6112 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
6113 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 LW |
6114 | return; |
6115 | } | |
4db098f4 | 6116 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 6117 | return; |
8c4d3c90 NC |
6118 | Perl_sv_free2(aTHX_ sv); |
6119 | } | |
6120 | ||
6121 | void | |
6122 | Perl_sv_free2(pTHX_ SV *sv) | |
6123 | { | |
27da23d5 | 6124 | dVAR; |
463ee0b2 LW |
6125 | #ifdef DEBUGGING |
6126 | if (SvTEMP(sv)) { | |
0453d815 | 6127 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 6128 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
6129 | "Attempt to free temp prematurely: SV 0x%"UVxf |
6130 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 6131 | return; |
79072805 | 6132 | } |
463ee0b2 | 6133 | #endif |
d689ffdd JP |
6134 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
6135 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
6136 | SvREFCNT(sv) = (~(U32)0)/2; | |
6137 | return; | |
6138 | } | |
79072805 | 6139 | sv_clear(sv); |
477f5d66 CS |
6140 | if (! SvREFCNT(sv)) |
6141 | del_SV(sv); | |
79072805 LW |
6142 | } |
6143 | ||
954c1994 GS |
6144 | /* |
6145 | =for apidoc sv_len | |
6146 | ||
645c22ef DM |
6147 | Returns the length of the string in the SV. Handles magic and type |
6148 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
6149 | |
6150 | =cut | |
6151 | */ | |
6152 | ||
79072805 | 6153 | STRLEN |
864dbfa3 | 6154 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 6155 | { |
463ee0b2 | 6156 | STRLEN len; |
79072805 LW |
6157 | |
6158 | if (!sv) | |
6159 | return 0; | |
6160 | ||
8990e307 | 6161 | if (SvGMAGICAL(sv)) |
565764a8 | 6162 | len = mg_length(sv); |
8990e307 | 6163 | else |
4d84ee25 | 6164 | (void)SvPV_const(sv, len); |
463ee0b2 | 6165 | return len; |
79072805 LW |
6166 | } |
6167 | ||
c461cf8f JH |
6168 | /* |
6169 | =for apidoc sv_len_utf8 | |
6170 | ||
6171 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 6172 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
6173 | |
6174 | =cut | |
6175 | */ | |
6176 | ||
7e8c5dac HS |
6177 | /* |
6178 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
6179 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
6180 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
7a5fa8a2 | 6181 | * |
7e8c5dac HS |
6182 | */ |
6183 | ||
a0ed51b3 | 6184 | STRLEN |
864dbfa3 | 6185 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 6186 | { |
a0ed51b3 LW |
6187 | if (!sv) |
6188 | return 0; | |
6189 | ||
a0ed51b3 | 6190 | if (SvGMAGICAL(sv)) |
b76347f2 | 6191 | return mg_length(sv); |
a0ed51b3 | 6192 | else |
b76347f2 | 6193 | { |
7e8c5dac | 6194 | STRLEN len, ulen; |
e62f0680 | 6195 | const U8 *s = (U8*)SvPV_const(sv, len); |
7e8c5dac HS |
6196 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
6197 | ||
e23c8137 | 6198 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) { |
7e8c5dac | 6199 | ulen = mg->mg_len; |
e23c8137 JH |
6200 | #ifdef PERL_UTF8_CACHE_ASSERT |
6201 | assert(ulen == Perl_utf8_length(aTHX_ s, s + len)); | |
6202 | #endif | |
6203 | } | |
7e8c5dac HS |
6204 | else { |
6205 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
6206 | if (!mg && !SvREADONLY(sv)) { | |
6207 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6208 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6209 | assert(mg); | |
6210 | } | |
6211 | if (mg) | |
6212 | mg->mg_len = ulen; | |
6213 | } | |
6214 | return ulen; | |
6215 | } | |
6216 | } | |
6217 | ||
6218 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
6219 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6220 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
6221 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
6222 | * and byte offset) cache positions. | |
6223 | * | |
6224 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
6225 | * Note that the mg_len is not the length of the mg_ptr field. | |
6226 | * | |
6227 | */ | |
6228 | STATIC bool | |
a3b680e6 | 6229 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 offsetp, U8 *s, U8 *start) |
7e8c5dac | 6230 | { |
7a5fa8a2 | 6231 | bool found = FALSE; |
7e8c5dac HS |
6232 | |
6233 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
8f78557a | 6234 | if (!*mgp) |
27da23d5 | 6235 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, (MGVTBL*)&PL_vtbl_utf8, 0, 0); |
7e8c5dac | 6236 | assert(*mgp); |
b76347f2 | 6237 | |
7e8c5dac HS |
6238 | if ((*mgp)->mg_ptr) |
6239 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
6240 | else { | |
6241 | Newz(0, *cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
6242 | (*mgp)->mg_ptr = (char *) *cachep; | |
6243 | } | |
6244 | assert(*cachep); | |
6245 | ||
a3b680e6 | 6246 | (*cachep)[i] = offsetp; |
7e8c5dac HS |
6247 | (*cachep)[i+1] = s - start; |
6248 | found = TRUE; | |
a0ed51b3 | 6249 | } |
7e8c5dac HS |
6250 | |
6251 | return found; | |
a0ed51b3 LW |
6252 | } |
6253 | ||
645c22ef | 6254 | /* |
7e8c5dac HS |
6255 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
6256 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
6257 | * between UTF-8 and byte offsets. See also the comments of | |
6258 | * S_utf8_mg_pos_init(). | |
6259 | * | |
6260 | */ | |
6261 | STATIC bool | |
6e551876 | 6262 | S_utf8_mg_pos(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, I32 uoff, U8 **sp, U8 *start, U8 *send) |
7e8c5dac HS |
6263 | { |
6264 | bool found = FALSE; | |
6265 | ||
6266 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6267 | if (!*mgp) | |
6268 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
6269 | if (*mgp && (*mgp)->mg_ptr) { | |
6270 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
e23c8137 | 6271 | ASSERT_UTF8_CACHE(*cachep); |
667208dd | 6272 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
7a5fa8a2 | 6273 | found = TRUE; |
7e8c5dac HS |
6274 | else { /* We will skip to the right spot. */ |
6275 | STRLEN forw = 0; | |
6276 | STRLEN backw = 0; | |
a3b680e6 | 6277 | const U8* p = NULL; |
7e8c5dac HS |
6278 | |
6279 | /* The assumption is that going backward is half | |
6280 | * the speed of going forward (that's where the | |
6281 | * 2 * backw in the below comes from). (The real | |
6282 | * figure of course depends on the UTF-8 data.) */ | |
6283 | ||
667208dd | 6284 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 6285 | forw = uoff; |
667208dd | 6286 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
6287 | |
6288 | if (forw < 2 * backw) | |
6289 | p = start; | |
6290 | else | |
6291 | p = start + (*cachep)[i+1]; | |
6292 | } | |
6293 | /* Try this only for the substr offset (i == 0), | |
6294 | * not for the substr length (i == 2). */ | |
6295 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
a3b680e6 | 6296 | const STRLEN ulen = sv_len_utf8(sv); |
7e8c5dac | 6297 | |
667208dd JH |
6298 | if ((STRLEN)uoff < ulen) { |
6299 | forw = (STRLEN)uoff - (*cachep)[i]; | |
6300 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
6301 | |
6302 | if (forw < 2 * backw) | |
6303 | p = start + (*cachep)[i+1]; | |
6304 | else | |
6305 | p = send; | |
6306 | } | |
6307 | ||
6308 | /* If the string is not long enough for uoff, | |
6309 | * we could extend it, but not at this low a level. */ | |
6310 | } | |
6311 | ||
6312 | if (p) { | |
6313 | if (forw < 2 * backw) { | |
6314 | while (forw--) | |
6315 | p += UTF8SKIP(p); | |
6316 | } | |
6317 | else { | |
6318 | while (backw--) { | |
6319 | p--; | |
6320 | while (UTF8_IS_CONTINUATION(*p)) | |
6321 | p--; | |
6322 | } | |
6323 | } | |
6324 | ||
6325 | /* Update the cache. */ | |
667208dd | 6326 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac | 6327 | (*cachep)[i+1] = p - start; |
8f78557a AE |
6328 | |
6329 | /* Drop the stale "length" cache */ | |
6330 | if (i == 0) { | |
6331 | (*cachep)[2] = 0; | |
6332 | (*cachep)[3] = 0; | |
6333 | } | |
7a5fa8a2 | 6334 | |
7e8c5dac HS |
6335 | found = TRUE; |
6336 | } | |
6337 | } | |
6338 | if (found) { /* Setup the return values. */ | |
6339 | *offsetp = (*cachep)[i+1]; | |
6340 | *sp = start + *offsetp; | |
6341 | if (*sp >= send) { | |
6342 | *sp = send; | |
6343 | *offsetp = send - start; | |
6344 | } | |
6345 | else if (*sp < start) { | |
6346 | *sp = start; | |
6347 | *offsetp = 0; | |
6348 | } | |
6349 | } | |
6350 | } | |
e23c8137 JH |
6351 | #ifdef PERL_UTF8_CACHE_ASSERT |
6352 | if (found) { | |
6353 | U8 *s = start; | |
6354 | I32 n = uoff; | |
6355 | ||
6356 | while (n-- && s < send) | |
6357 | s += UTF8SKIP(s); | |
6358 | ||
6359 | if (i == 0) { | |
6360 | assert(*offsetp == s - start); | |
6361 | assert((*cachep)[0] == (STRLEN)uoff); | |
6362 | assert((*cachep)[1] == *offsetp); | |
6363 | } | |
6364 | ASSERT_UTF8_CACHE(*cachep); | |
6365 | } | |
6366 | #endif | |
7e8c5dac | 6367 | } |
e23c8137 | 6368 | |
7e8c5dac HS |
6369 | return found; |
6370 | } | |
7a5fa8a2 | 6371 | |
7e8c5dac | 6372 | /* |
645c22ef DM |
6373 | =for apidoc sv_pos_u2b |
6374 | ||
1e54db1a | 6375 | Converts the value pointed to by offsetp from a count of UTF-8 chars from |
645c22ef DM |
6376 | the start of the string, to a count of the equivalent number of bytes; if |
6377 | lenp is non-zero, it does the same to lenp, but this time starting from | |
6378 | the offset, rather than from the start of the string. Handles magic and | |
6379 | type coercion. | |
6380 | ||
6381 | =cut | |
6382 | */ | |
6383 | ||
7e8c5dac HS |
6384 | /* |
6385 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
6386 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6387 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6388 | * | |
6389 | */ | |
6390 | ||
a0ed51b3 | 6391 | void |
864dbfa3 | 6392 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 6393 | { |
dfe13c55 | 6394 | U8 *start; |
a0ed51b3 LW |
6395 | STRLEN len; |
6396 | ||
6397 | if (!sv) | |
6398 | return; | |
6399 | ||
b464bac0 | 6400 | start = (U8*)SvPV(sv, len); |
7e8c5dac | 6401 | if (len) { |
b464bac0 AL |
6402 | STRLEN boffset = 0; |
6403 | STRLEN *cache = 0; | |
6404 | U8 *s = start; | |
7e8c5dac HS |
6405 | I32 uoffset = *offsetp; |
6406 | U8 *send = s + len; | |
6407 | MAGIC *mg = 0; | |
6408 | bool found = FALSE; | |
6409 | ||
bdf77a2a | 6410 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
6411 | found = TRUE; |
6412 | if (!found && uoffset > 0) { | |
6413 | while (s < send && uoffset--) | |
6414 | s += UTF8SKIP(s); | |
6415 | if (s >= send) | |
6416 | s = send; | |
a3b680e6 | 6417 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, *offsetp, s, start)) |
7e8c5dac HS |
6418 | boffset = cache[1]; |
6419 | *offsetp = s - start; | |
6420 | } | |
6421 | if (lenp) { | |
6422 | found = FALSE; | |
6423 | start = s; | |
ec062429 | 6424 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp, &s, start, send)) { |
7e8c5dac HS |
6425 | *lenp -= boffset; |
6426 | found = TRUE; | |
6427 | } | |
6428 | if (!found && *lenp > 0) { | |
6429 | I32 ulen = *lenp; | |
6430 | if (ulen > 0) | |
6431 | while (s < send && ulen--) | |
6432 | s += UTF8SKIP(s); | |
6433 | if (s >= send) | |
6434 | s = send; | |
a3b680e6 | 6435 | utf8_mg_pos_init(sv, &mg, &cache, 2, *lenp, s, start); |
7e8c5dac HS |
6436 | } |
6437 | *lenp = s - start; | |
6438 | } | |
e23c8137 | 6439 | ASSERT_UTF8_CACHE(cache); |
7e8c5dac HS |
6440 | } |
6441 | else { | |
6442 | *offsetp = 0; | |
6443 | if (lenp) | |
6444 | *lenp = 0; | |
a0ed51b3 | 6445 | } |
e23c8137 | 6446 | |
a0ed51b3 LW |
6447 | return; |
6448 | } | |
6449 | ||
645c22ef DM |
6450 | /* |
6451 | =for apidoc sv_pos_b2u | |
6452 | ||
6453 | Converts the value pointed to by offsetp from a count of bytes from the | |
1e54db1a | 6454 | start of the string, to a count of the equivalent number of UTF-8 chars. |
645c22ef DM |
6455 | Handles magic and type coercion. |
6456 | ||
6457 | =cut | |
6458 | */ | |
6459 | ||
7e8c5dac HS |
6460 | /* |
6461 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
6462 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6463 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6464 | * | |
6465 | */ | |
6466 | ||
a0ed51b3 | 6467 | void |
7e8c5dac | 6468 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 6469 | { |
7e8c5dac | 6470 | U8* s; |
a0ed51b3 LW |
6471 | STRLEN len; |
6472 | ||
6473 | if (!sv) | |
6474 | return; | |
6475 | ||
dfe13c55 | 6476 | s = (U8*)SvPV(sv, len); |
eb160463 | 6477 | if ((I32)len < *offsetp) |
a0dbb045 | 6478 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac HS |
6479 | else { |
6480 | U8* send = s + *offsetp; | |
6481 | MAGIC* mg = NULL; | |
6482 | STRLEN *cache = NULL; | |
6483 | ||
6484 | len = 0; | |
6485 | ||
6486 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6487 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6488 | if (mg && mg->mg_ptr) { | |
6489 | cache = (STRLEN *) mg->mg_ptr; | |
c5661c80 | 6490 | if (cache[1] == (STRLEN)*offsetp) { |
7e8c5dac HS |
6491 | /* An exact match. */ |
6492 | *offsetp = cache[0]; | |
6493 | ||
6494 | return; | |
6495 | } | |
c5661c80 | 6496 | else if (cache[1] < (STRLEN)*offsetp) { |
7e8c5dac HS |
6497 | /* We already know part of the way. */ |
6498 | len = cache[0]; | |
6499 | s += cache[1]; | |
7a5fa8a2 | 6500 | /* Let the below loop do the rest. */ |
7e8c5dac HS |
6501 | } |
6502 | else { /* cache[1] > *offsetp */ | |
6503 | /* We already know all of the way, now we may | |
6504 | * be able to walk back. The same assumption | |
6505 | * is made as in S_utf8_mg_pos(), namely that | |
6506 | * walking backward is twice slower than | |
6507 | * walking forward. */ | |
6508 | STRLEN forw = *offsetp; | |
6509 | STRLEN backw = cache[1] - *offsetp; | |
6510 | ||
6511 | if (!(forw < 2 * backw)) { | |
6512 | U8 *p = s + cache[1]; | |
6513 | STRLEN ubackw = 0; | |
7a5fa8a2 | 6514 | |
a5b510f2 AE |
6515 | cache[1] -= backw; |
6516 | ||
7e8c5dac HS |
6517 | while (backw--) { |
6518 | p--; | |
0aeb64d0 | 6519 | while (UTF8_IS_CONTINUATION(*p)) { |
7e8c5dac | 6520 | p--; |
0aeb64d0 JH |
6521 | backw--; |
6522 | } | |
7e8c5dac HS |
6523 | ubackw++; |
6524 | } | |
6525 | ||
6526 | cache[0] -= ubackw; | |
0aeb64d0 | 6527 | *offsetp = cache[0]; |
a67d7df9 TS |
6528 | |
6529 | /* Drop the stale "length" cache */ | |
6530 | cache[2] = 0; | |
6531 | cache[3] = 0; | |
6532 | ||
0aeb64d0 | 6533 | return; |
7e8c5dac HS |
6534 | } |
6535 | } | |
6536 | } | |
e23c8137 | 6537 | ASSERT_UTF8_CACHE(cache); |
a0dbb045 | 6538 | } |
7e8c5dac HS |
6539 | |
6540 | while (s < send) { | |
6541 | STRLEN n = 1; | |
6542 | ||
6543 | /* Call utf8n_to_uvchr() to validate the sequence | |
6544 | * (unless a simple non-UTF character) */ | |
6545 | if (!UTF8_IS_INVARIANT(*s)) | |
6546 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
6547 | if (n > 0) { | |
6548 | s += n; | |
6549 | len++; | |
6550 | } | |
6551 | else | |
6552 | break; | |
6553 | } | |
6554 | ||
6555 | if (!SvREADONLY(sv)) { | |
6556 | if (!mg) { | |
6557 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6558 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6559 | } | |
6560 | assert(mg); | |
6561 | ||
6562 | if (!mg->mg_ptr) { | |
979acdb5 | 6563 | Newz(0, cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
6564 | mg->mg_ptr = (char *) cache; |
6565 | } | |
6566 | assert(cache); | |
6567 | ||
6568 | cache[0] = len; | |
6569 | cache[1] = *offsetp; | |
a67d7df9 TS |
6570 | /* Drop the stale "length" cache */ |
6571 | cache[2] = 0; | |
6572 | cache[3] = 0; | |
7e8c5dac HS |
6573 | } |
6574 | ||
6575 | *offsetp = len; | |
a0ed51b3 | 6576 | } |
a0ed51b3 LW |
6577 | return; |
6578 | } | |
6579 | ||
954c1994 GS |
6580 | /* |
6581 | =for apidoc sv_eq | |
6582 | ||
6583 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
6584 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6585 | coerce its args to strings if necessary. | |
954c1994 GS |
6586 | |
6587 | =cut | |
6588 | */ | |
6589 | ||
79072805 | 6590 | I32 |
e01b9e88 | 6591 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6592 | { |
e1ec3a88 | 6593 | const char *pv1; |
463ee0b2 | 6594 | STRLEN cur1; |
e1ec3a88 | 6595 | const char *pv2; |
463ee0b2 | 6596 | STRLEN cur2; |
e01b9e88 | 6597 | I32 eq = 0; |
553e1bcc AT |
6598 | char *tpv = Nullch; |
6599 | SV* svrecode = Nullsv; | |
79072805 | 6600 | |
e01b9e88 | 6601 | if (!sv1) { |
79072805 LW |
6602 | pv1 = ""; |
6603 | cur1 = 0; | |
6604 | } | |
463ee0b2 | 6605 | else |
4d84ee25 | 6606 | pv1 = SvPV_const(sv1, cur1); |
79072805 | 6607 | |
e01b9e88 SC |
6608 | if (!sv2){ |
6609 | pv2 = ""; | |
6610 | cur2 = 0; | |
92d29cee | 6611 | } |
e01b9e88 | 6612 | else |
4d84ee25 | 6613 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 6614 | |
cf48d248 | 6615 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6616 | /* Differing utf8ness. |
6617 | * Do not UTF8size the comparands as a side-effect. */ | |
6618 | if (PL_encoding) { | |
6619 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6620 | svrecode = newSVpvn(pv2, cur2); |
6621 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6622 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6623 | } |
6624 | else { | |
553e1bcc AT |
6625 | svrecode = newSVpvn(pv1, cur1); |
6626 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6627 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6628 | } |
6629 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
6630 | if (cur1 != cur2) { |
6631 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6632 | return FALSE; |
0a1bd7ac | 6633 | } |
799ef3cb JH |
6634 | } |
6635 | else { | |
6636 | bool is_utf8 = TRUE; | |
6637 | ||
6638 | if (SvUTF8(sv1)) { | |
6639 | /* sv1 is the UTF-8 one, | |
6640 | * if is equal it must be downgrade-able */ | |
e1ec3a88 | 6641 | char *pv = (char*)bytes_from_utf8((const U8*)pv1, |
799ef3cb JH |
6642 | &cur1, &is_utf8); |
6643 | if (pv != pv1) | |
553e1bcc | 6644 | pv1 = tpv = pv; |
799ef3cb JH |
6645 | } |
6646 | else { | |
6647 | /* sv2 is the UTF-8 one, | |
6648 | * if is equal it must be downgrade-able */ | |
e1ec3a88 | 6649 | char *pv = (char *)bytes_from_utf8((const U8*)pv2, |
799ef3cb JH |
6650 | &cur2, &is_utf8); |
6651 | if (pv != pv2) | |
553e1bcc | 6652 | pv2 = tpv = pv; |
799ef3cb JH |
6653 | } |
6654 | if (is_utf8) { | |
6655 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 6656 | assert (tpv == 0); |
799ef3cb JH |
6657 | return FALSE; |
6658 | } | |
6659 | } | |
cf48d248 JH |
6660 | } |
6661 | ||
6662 | if (cur1 == cur2) | |
765f542d | 6663 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6664 | |
553e1bcc AT |
6665 | if (svrecode) |
6666 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6667 | |
553e1bcc AT |
6668 | if (tpv) |
6669 | Safefree(tpv); | |
cf48d248 | 6670 | |
e01b9e88 | 6671 | return eq; |
79072805 LW |
6672 | } |
6673 | ||
954c1994 GS |
6674 | /* |
6675 | =for apidoc sv_cmp | |
6676 | ||
6677 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6678 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6679 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6680 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6681 | |
6682 | =cut | |
6683 | */ | |
6684 | ||
79072805 | 6685 | I32 |
e01b9e88 | 6686 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6687 | { |
560a288e | 6688 | STRLEN cur1, cur2; |
e1ec3a88 AL |
6689 | const char *pv1, *pv2; |
6690 | char *tpv = Nullch; | |
cf48d248 | 6691 | I32 cmp; |
553e1bcc | 6692 | SV *svrecode = Nullsv; |
560a288e | 6693 | |
e01b9e88 SC |
6694 | if (!sv1) { |
6695 | pv1 = ""; | |
560a288e GS |
6696 | cur1 = 0; |
6697 | } | |
e01b9e88 | 6698 | else |
4d84ee25 | 6699 | pv1 = SvPV_const(sv1, cur1); |
560a288e | 6700 | |
553e1bcc | 6701 | if (!sv2) { |
e01b9e88 | 6702 | pv2 = ""; |
560a288e GS |
6703 | cur2 = 0; |
6704 | } | |
e01b9e88 | 6705 | else |
4d84ee25 | 6706 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 6707 | |
cf48d248 | 6708 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6709 | /* Differing utf8ness. |
6710 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6711 | if (SvUTF8(sv1)) { |
799ef3cb | 6712 | if (PL_encoding) { |
553e1bcc AT |
6713 | svrecode = newSVpvn(pv2, cur2); |
6714 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6715 | pv2 = SvPV(svrecode, cur2); | |
799ef3cb JH |
6716 | } |
6717 | else { | |
e1ec3a88 | 6718 | pv2 = tpv = (char*)bytes_to_utf8((const U8*)pv2, &cur2); |
799ef3cb | 6719 | } |
cf48d248 JH |
6720 | } |
6721 | else { | |
799ef3cb | 6722 | if (PL_encoding) { |
553e1bcc AT |
6723 | svrecode = newSVpvn(pv1, cur1); |
6724 | sv_recode_to_utf8(svrecode, PL_encoding); | |
6725 | pv1 = SvPV(svrecode, cur1); | |
799ef3cb JH |
6726 | } |
6727 | else { | |
e1ec3a88 | 6728 | pv1 = tpv = (char*)bytes_to_utf8((const U8*)pv1, &cur1); |
799ef3cb | 6729 | } |
cf48d248 JH |
6730 | } |
6731 | } | |
6732 | ||
e01b9e88 | 6733 | if (!cur1) { |
cf48d248 | 6734 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6735 | } else if (!cur2) { |
cf48d248 JH |
6736 | cmp = 1; |
6737 | } else { | |
e1ec3a88 | 6738 | const I32 retval = memcmp((const void*)pv1, (const void*)pv2, cur1 < cur2 ? cur1 : cur2); |
e01b9e88 SC |
6739 | |
6740 | if (retval) { | |
cf48d248 | 6741 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6742 | } else if (cur1 == cur2) { |
cf48d248 JH |
6743 | cmp = 0; |
6744 | } else { | |
6745 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6746 | } |
cf48d248 | 6747 | } |
16660edb | 6748 | |
553e1bcc AT |
6749 | if (svrecode) |
6750 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6751 | |
553e1bcc AT |
6752 | if (tpv) |
6753 | Safefree(tpv); | |
cf48d248 JH |
6754 | |
6755 | return cmp; | |
bbce6d69 | 6756 | } |
16660edb | 6757 | |
c461cf8f JH |
6758 | /* |
6759 | =for apidoc sv_cmp_locale | |
6760 | ||
645c22ef DM |
6761 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6762 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6763 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6764 | |
6765 | =cut | |
6766 | */ | |
6767 | ||
bbce6d69 | 6768 | I32 |
864dbfa3 | 6769 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6770 | { |
36477c24 | 6771 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6772 | |
bbce6d69 | 6773 | char *pv1, *pv2; |
6774 | STRLEN len1, len2; | |
6775 | I32 retval; | |
16660edb | 6776 | |
3280af22 | 6777 | if (PL_collation_standard) |
bbce6d69 | 6778 | goto raw_compare; |
16660edb | 6779 | |
bbce6d69 | 6780 | len1 = 0; |
8ac85365 | 6781 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6782 | len2 = 0; |
8ac85365 | 6783 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6784 | |
bbce6d69 | 6785 | if (!pv1 || !len1) { |
6786 | if (pv2 && len2) | |
6787 | return -1; | |
6788 | else | |
6789 | goto raw_compare; | |
6790 | } | |
6791 | else { | |
6792 | if (!pv2 || !len2) | |
6793 | return 1; | |
6794 | } | |
16660edb | 6795 | |
bbce6d69 | 6796 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6797 | |
bbce6d69 | 6798 | if (retval) |
16660edb | 6799 | return retval < 0 ? -1 : 1; |
6800 | ||
bbce6d69 | 6801 | /* |
6802 | * When the result of collation is equality, that doesn't mean | |
6803 | * that there are no differences -- some locales exclude some | |
6804 | * characters from consideration. So to avoid false equalities, | |
6805 | * we use the raw string as a tiebreaker. | |
6806 | */ | |
16660edb | 6807 | |
bbce6d69 | 6808 | raw_compare: |
6809 | /* FALL THROUGH */ | |
16660edb | 6810 | |
36477c24 | 6811 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6812 | |
bbce6d69 | 6813 | return sv_cmp(sv1, sv2); |
6814 | } | |
79072805 | 6815 | |
645c22ef | 6816 | |
36477c24 | 6817 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6818 | |
7a4c00b4 | 6819 | /* |
645c22ef DM |
6820 | =for apidoc sv_collxfrm |
6821 | ||
6822 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6823 | ||
6824 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6825 | scalar data of the variable, but transformed to such a format that a normal | |
6826 | memory comparison can be used to compare the data according to the locale | |
6827 | settings. | |
6828 | ||
6829 | =cut | |
6830 | */ | |
6831 | ||
bbce6d69 | 6832 | char * |
864dbfa3 | 6833 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6834 | { |
7a4c00b4 | 6835 | MAGIC *mg; |
16660edb | 6836 | |
14befaf4 | 6837 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6838 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
bbce6d69 | 6839 | char *s, *xf; |
6840 | STRLEN len, xlen; | |
6841 | ||
7a4c00b4 | 6842 | if (mg) |
6843 | Safefree(mg->mg_ptr); | |
bbce6d69 | 6844 | s = SvPV(sv, len); |
6845 | if ((xf = mem_collxfrm(s, len, &xlen))) { | |
ff0cee69 | 6846 | if (SvREADONLY(sv)) { |
6847 | SAVEFREEPV(xf); | |
6848 | *nxp = xlen; | |
3280af22 | 6849 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6850 | } |
7a4c00b4 | 6851 | if (! mg) { |
14befaf4 DM |
6852 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6853 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6854 | assert(mg); |
bbce6d69 | 6855 | } |
7a4c00b4 | 6856 | mg->mg_ptr = xf; |
565764a8 | 6857 | mg->mg_len = xlen; |
7a4c00b4 | 6858 | } |
6859 | else { | |
ff0cee69 | 6860 | if (mg) { |
6861 | mg->mg_ptr = NULL; | |
565764a8 | 6862 | mg->mg_len = -1; |
ff0cee69 | 6863 | } |
bbce6d69 | 6864 | } |
6865 | } | |
7a4c00b4 | 6866 | if (mg && mg->mg_ptr) { |
565764a8 | 6867 | *nxp = mg->mg_len; |
3280af22 | 6868 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6869 | } |
6870 | else { | |
6871 | *nxp = 0; | |
6872 | return NULL; | |
16660edb | 6873 | } |
79072805 LW |
6874 | } |
6875 | ||
36477c24 | 6876 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6877 | |
c461cf8f JH |
6878 | /* |
6879 | =for apidoc sv_gets | |
6880 | ||
6881 | Get a line from the filehandle and store it into the SV, optionally | |
6882 | appending to the currently-stored string. | |
6883 | ||
6884 | =cut | |
6885 | */ | |
6886 | ||
79072805 | 6887 | char * |
864dbfa3 | 6888 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6889 | { |
e1ec3a88 | 6890 | const char *rsptr; |
c07a80fd | 6891 | STRLEN rslen; |
6892 | register STDCHAR rslast; | |
6893 | register STDCHAR *bp; | |
6894 | register I32 cnt; | |
9c5ffd7c | 6895 | I32 i = 0; |
8bfdd7d9 | 6896 | I32 rspara = 0; |
e311fd51 | 6897 | I32 recsize; |
c07a80fd | 6898 | |
bc44a8a2 NC |
6899 | if (SvTHINKFIRST(sv)) |
6900 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6901 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6902 | from <>. | |
6903 | However, perlbench says it's slower, because the existing swipe code | |
6904 | is faster than copy on write. | |
6905 | Swings and roundabouts. */ | |
862a34c6 | 6906 | SvUPGRADE(sv, SVt_PV); |
99491443 | 6907 | |
ff68c719 | 6908 | SvSCREAM_off(sv); |
efd8b2ba AE |
6909 | |
6910 | if (append) { | |
6911 | if (PerlIO_isutf8(fp)) { | |
6912 | if (!SvUTF8(sv)) { | |
6913 | sv_utf8_upgrade_nomg(sv); | |
6914 | sv_pos_u2b(sv,&append,0); | |
6915 | } | |
6916 | } else if (SvUTF8(sv)) { | |
6917 | SV *tsv = NEWSV(0,0); | |
6918 | sv_gets(tsv, fp, 0); | |
6919 | sv_utf8_upgrade_nomg(tsv); | |
6920 | SvCUR_set(sv,append); | |
6921 | sv_catsv(sv,tsv); | |
6922 | sv_free(tsv); | |
6923 | goto return_string_or_null; | |
6924 | } | |
6925 | } | |
6926 | ||
6927 | SvPOK_only(sv); | |
6928 | if (PerlIO_isutf8(fp)) | |
6929 | SvUTF8_on(sv); | |
c07a80fd | 6930 | |
923e4eb5 | 6931 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
6932 | /* we always read code in line mode */ |
6933 | rsptr = "\n"; | |
6934 | rslen = 1; | |
6935 | } | |
6936 | else if (RsSNARF(PL_rs)) { | |
7a5fa8a2 NIS |
6937 | /* If it is a regular disk file use size from stat() as estimate |
6938 | of amount we are going to read - may result in malloc-ing | |
6939 | more memory than we realy need if layers bellow reduce | |
e468d35b NIS |
6940 | size we read (e.g. CRLF or a gzip layer) |
6941 | */ | |
e311fd51 | 6942 | Stat_t st; |
e468d35b | 6943 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
f54cb97a | 6944 | const Off_t offset = PerlIO_tell(fp); |
58f1856e | 6945 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6946 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6947 | } | |
6948 | } | |
c07a80fd | 6949 | rsptr = NULL; |
6950 | rslen = 0; | |
6951 | } | |
3280af22 | 6952 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6953 | I32 bytesread; |
5b2b9c68 HM |
6954 | char *buffer; |
6955 | ||
6956 | /* Grab the size of the record we're getting */ | |
3280af22 | 6957 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 6958 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6959 | /* Go yank in */ |
6960 | #ifdef VMS | |
6961 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6962 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6963 | /* doing, but we've got no other real choice - except avoid stdio |
6964 | as implementation - perhaps write a :vms layer ? | |
6965 | */ | |
5b2b9c68 HM |
6966 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6967 | #else | |
6968 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6969 | #endif | |
27e6ca2d AE |
6970 | if (bytesread < 0) |
6971 | bytesread = 0; | |
e311fd51 | 6972 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6973 | buffer[bytesread] = '\0'; |
efd8b2ba | 6974 | goto return_string_or_null; |
5b2b9c68 | 6975 | } |
3280af22 | 6976 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6977 | rsptr = "\n\n"; |
6978 | rslen = 2; | |
8bfdd7d9 | 6979 | rspara = 1; |
c07a80fd | 6980 | } |
7d59b7e4 NIS |
6981 | else { |
6982 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6983 | if (PerlIO_isutf8(fp)) { | |
6984 | rsptr = SvPVutf8(PL_rs, rslen); | |
6985 | } | |
6986 | else { | |
6987 | if (SvUTF8(PL_rs)) { | |
6988 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
6989 | Perl_croak(aTHX_ "Wide character in $/"); | |
6990 | } | |
6991 | } | |
6992 | rsptr = SvPV(PL_rs, rslen); | |
6993 | } | |
6994 | } | |
6995 | ||
c07a80fd | 6996 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
6997 | ||
8bfdd7d9 | 6998 | if (rspara) { /* have to do this both before and after */ |
79072805 | 6999 | do { /* to make sure file boundaries work right */ |
760ac839 | 7000 | if (PerlIO_eof(fp)) |
a0d0e21e | 7001 | return 0; |
760ac839 | 7002 | i = PerlIO_getc(fp); |
79072805 | 7003 | if (i != '\n') { |
a0d0e21e LW |
7004 | if (i == -1) |
7005 | return 0; | |
760ac839 | 7006 | PerlIO_ungetc(fp,i); |
79072805 LW |
7007 | break; |
7008 | } | |
7009 | } while (i != EOF); | |
7010 | } | |
c07a80fd | 7011 | |
760ac839 LW |
7012 | /* See if we know enough about I/O mechanism to cheat it ! */ |
7013 | ||
7014 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 7015 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
7016 | enough here - and may even be a macro allowing compile |
7017 | time optimization. | |
7018 | */ | |
7019 | ||
7020 | if (PerlIO_fast_gets(fp)) { | |
7021 | ||
7022 | /* | |
7023 | * We're going to steal some values from the stdio struct | |
7024 | * and put EVERYTHING in the innermost loop into registers. | |
7025 | */ | |
7026 | register STDCHAR *ptr; | |
7027 | STRLEN bpx; | |
7028 | I32 shortbuffered; | |
7029 | ||
16660edb | 7030 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
7031 | /* An ungetc()d char is handled separately from the regular | |
7032 | * buffer, so we getc() it back out and stuff it in the buffer. | |
7033 | */ | |
7034 | i = PerlIO_getc(fp); | |
7035 | if (i == EOF) return 0; | |
7036 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
7037 | (*fp)->_cnt++; | |
7038 | #endif | |
c07a80fd | 7039 | |
c2960299 | 7040 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 7041 | |
a20bf0c3 | 7042 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b | 7043 | /* make sure we have the room */ |
7a5fa8a2 | 7044 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { |
e468d35b | 7045 | /* Not room for all of it |
7a5fa8a2 | 7046 | if we are looking for a separator and room for some |
e468d35b NIS |
7047 | */ |
7048 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7a5fa8a2 | 7049 | /* just process what we have room for */ |
79072805 LW |
7050 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
7051 | cnt -= shortbuffered; | |
7052 | } | |
7053 | else { | |
7054 | shortbuffered = 0; | |
bbce6d69 | 7055 | /* remember that cnt can be negative */ |
eb160463 | 7056 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
7057 | } |
7058 | } | |
7a5fa8a2 | 7059 | else |
79072805 | 7060 | shortbuffered = 0; |
3f7c398e | 7061 | bp = (STDCHAR*)SvPVX_const(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 7062 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 7063 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7064 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 7065 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 7066 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7067 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7068 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
7069 | for (;;) { |
7070 | screamer: | |
93a17b20 | 7071 | if (cnt > 0) { |
c07a80fd | 7072 | if (rslen) { |
760ac839 LW |
7073 | while (cnt > 0) { /* this | eat */ |
7074 | cnt--; | |
c07a80fd | 7075 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
7076 | goto thats_all_folks; /* screams | sed :-) */ | |
7077 | } | |
7078 | } | |
7079 | else { | |
1c846c1f NIS |
7080 | Copy(ptr, bp, cnt, char); /* this | eat */ |
7081 | bp += cnt; /* screams | dust */ | |
c07a80fd | 7082 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 7083 | cnt = 0; |
93a17b20 | 7084 | } |
79072805 LW |
7085 | } |
7086 | ||
748a9306 | 7087 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
7088 | cnt = shortbuffered; |
7089 | shortbuffered = 0; | |
3f7c398e | 7090 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
7091 | SvCUR_set(sv, bpx); |
7092 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
3f7c398e | 7093 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
7094 | continue; |
7095 | } | |
7096 | ||
16660edb | 7097 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
7098 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
7099 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 7100 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 7101 | #if 0 |
16660edb | 7102 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7103 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7104 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7105 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7106 | #endif |
1c846c1f | 7107 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 7108 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
7109 | another abstraction. */ | |
760ac839 | 7110 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 7111 | #if 0 |
16660edb | 7112 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7113 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7114 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7115 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 7116 | #endif |
a20bf0c3 JH |
7117 | cnt = PerlIO_get_cnt(fp); |
7118 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 7119 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7120 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 7121 | |
748a9306 LW |
7122 | if (i == EOF) /* all done for ever? */ |
7123 | goto thats_really_all_folks; | |
7124 | ||
3f7c398e | 7125 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
7126 | SvCUR_set(sv, bpx); |
7127 | SvGROW(sv, bpx + cnt + 2); | |
3f7c398e | 7128 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
c07a80fd | 7129 | |
eb160463 | 7130 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 7131 | |
c07a80fd | 7132 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 7133 | goto thats_all_folks; |
79072805 LW |
7134 | } |
7135 | ||
7136 | thats_all_folks: | |
3f7c398e | 7137 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX_const(sv)) < rslen) || |
36477c24 | 7138 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 7139 | goto screamer; /* go back to the fray */ |
79072805 LW |
7140 | thats_really_all_folks: |
7141 | if (shortbuffered) | |
7142 | cnt += shortbuffered; | |
16660edb | 7143 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7144 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 7145 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 7146 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 7147 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 7148 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 7149 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 7150 | *bp = '\0'; |
3f7c398e | 7151 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX_const(sv)); /* set length */ |
16660edb | 7152 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 7153 | "Screamer: done, len=%ld, string=|%.*s|\n", |
3f7c398e | 7154 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX_const(sv))); |
760ac839 LW |
7155 | } |
7156 | else | |
79072805 | 7157 | { |
6edd2cd5 | 7158 | /*The big, slow, and stupid way. */ |
27da23d5 | 7159 | #ifdef USE_HEAP_INSTEAD_OF_STACK /* Even slower way. */ |
6edd2cd5 JH |
7160 | STDCHAR *buf = 0; |
7161 | New(0, buf, 8192, STDCHAR); | |
7162 | assert(buf); | |
4d2c4e07 | 7163 | #else |
6edd2cd5 | 7164 | STDCHAR buf[8192]; |
4d2c4e07 | 7165 | #endif |
79072805 | 7166 | |
760ac839 | 7167 | screamer2: |
c07a80fd | 7168 | if (rslen) { |
6867be6d | 7169 | const register STDCHAR *bpe = buf + sizeof(buf); |
760ac839 | 7170 | bp = buf; |
eb160463 | 7171 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
7172 | ; /* keep reading */ |
7173 | cnt = bp - buf; | |
c07a80fd | 7174 | } |
7175 | else { | |
760ac839 | 7176 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 7177 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
7178 | * both args of ?: operator, causing EOF to change into 255 | |
7179 | */ | |
37be0adf | 7180 | if (cnt > 0) |
cbe9e203 JH |
7181 | i = (U8)buf[cnt - 1]; |
7182 | else | |
37be0adf | 7183 | i = EOF; |
c07a80fd | 7184 | } |
79072805 | 7185 | |
cbe9e203 JH |
7186 | if (cnt < 0) |
7187 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
7188 | if (append) | |
7189 | sv_catpvn(sv, (char *) buf, cnt); | |
7190 | else | |
7191 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 7192 | |
7193 | if (i != EOF && /* joy */ | |
7194 | (!rslen || | |
7195 | SvCUR(sv) < rslen || | |
3f7c398e | 7196 | memNE(SvPVX_const(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
7197 | { |
7198 | append = -1; | |
63e4d877 CS |
7199 | /* |
7200 | * If we're reading from a TTY and we get a short read, | |
7201 | * indicating that the user hit his EOF character, we need | |
7202 | * to notice it now, because if we try to read from the TTY | |
7203 | * again, the EOF condition will disappear. | |
7204 | * | |
7205 | * The comparison of cnt to sizeof(buf) is an optimization | |
7206 | * that prevents unnecessary calls to feof(). | |
7207 | * | |
7208 | * - jik 9/25/96 | |
7209 | */ | |
7210 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
7211 | goto screamer2; | |
79072805 | 7212 | } |
6edd2cd5 | 7213 | |
27da23d5 | 7214 | #ifdef USE_HEAP_INSTEAD_OF_STACK |
6edd2cd5 JH |
7215 | Safefree(buf); |
7216 | #endif | |
79072805 LW |
7217 | } |
7218 | ||
8bfdd7d9 | 7219 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 7220 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 7221 | i = PerlIO_getc(fp); |
79072805 | 7222 | if (i != '\n') { |
760ac839 | 7223 | PerlIO_ungetc(fp,i); |
79072805 LW |
7224 | break; |
7225 | } | |
7226 | } | |
7227 | } | |
c07a80fd | 7228 | |
efd8b2ba | 7229 | return_string_or_null: |
c07a80fd | 7230 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
7231 | } |
7232 | ||
954c1994 GS |
7233 | /* |
7234 | =for apidoc sv_inc | |
7235 | ||
645c22ef DM |
7236 | Auto-increment of the value in the SV, doing string to numeric conversion |
7237 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7238 | |
7239 | =cut | |
7240 | */ | |
7241 | ||
79072805 | 7242 | void |
864dbfa3 | 7243 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
7244 | { |
7245 | register char *d; | |
463ee0b2 | 7246 | int flags; |
79072805 LW |
7247 | |
7248 | if (!sv) | |
7249 | return; | |
b23a5f78 GB |
7250 | if (SvGMAGICAL(sv)) |
7251 | mg_get(sv); | |
ed6116ce | 7252 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7253 | if (SvIsCOW(sv)) |
7254 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7255 | if (SvREADONLY(sv)) { |
923e4eb5 | 7256 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7257 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7258 | } |
a0d0e21e | 7259 | if (SvROK(sv)) { |
b5be31e9 | 7260 | IV i; |
9e7bc3e8 JD |
7261 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
7262 | return; | |
56431972 | 7263 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7264 | sv_unref(sv); |
7265 | sv_setiv(sv, i); | |
a0d0e21e | 7266 | } |
ed6116ce | 7267 | } |
8990e307 | 7268 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7269 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
7270 | /* It's (privately or publicly) a float, but not tested as an | |
7271 | integer, so test it to see. */ | |
d460ef45 | 7272 | (void) SvIV(sv); |
28e5dec8 JH |
7273 | flags = SvFLAGS(sv); |
7274 | } | |
7275 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
7276 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7277 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7278 | oops_its_int: |
59d8ce62 | 7279 | #endif |
25da4f38 IZ |
7280 | if (SvIsUV(sv)) { |
7281 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 7282 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
7283 | else |
7284 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 7285 | SvUV_set(sv, SvUVX(sv) + 1); |
25da4f38 IZ |
7286 | } else { |
7287 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 7288 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
7289 | else { |
7290 | (void)SvIOK_only(sv); | |
45977657 | 7291 | SvIV_set(sv, SvIVX(sv) + 1); |
1c846c1f | 7292 | } |
55497cff | 7293 | } |
79072805 LW |
7294 | return; |
7295 | } | |
28e5dec8 JH |
7296 | if (flags & SVp_NOK) { |
7297 | (void)SvNOK_only(sv); | |
9d6ce603 | 7298 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
7299 | return; |
7300 | } | |
7301 | ||
3f7c398e | 7302 | if (!(flags & SVp_POK) || !*SvPVX_const(sv)) { |
28e5dec8 JH |
7303 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
7304 | sv_upgrade(sv, SVt_IV); | |
7305 | (void)SvIOK_only(sv); | |
45977657 | 7306 | SvIV_set(sv, 1); |
79072805 LW |
7307 | return; |
7308 | } | |
463ee0b2 | 7309 | d = SvPVX(sv); |
79072805 LW |
7310 | while (isALPHA(*d)) d++; |
7311 | while (isDIGIT(*d)) d++; | |
7312 | if (*d) { | |
28e5dec8 | 7313 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 7314 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
7315 | warnings. Probably ought to make the sv_iv_please() that does |
7316 | the conversion if possible, and silently. */ | |
504618e9 | 7317 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7318 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7319 | /* Need to try really hard to see if it's an integer. | |
7320 | 9.22337203685478e+18 is an integer. | |
7321 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7322 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
7323 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
7324 | or we go insane. */ | |
d460ef45 | 7325 | |
28e5dec8 JH |
7326 | (void) sv_2iv(sv); |
7327 | if (SvIOK(sv)) | |
7328 | goto oops_its_int; | |
7329 | ||
7330 | /* sv_2iv *should* have made this an NV */ | |
7331 | if (flags & SVp_NOK) { | |
7332 | (void)SvNOK_only(sv); | |
9d6ce603 | 7333 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
7334 | return; |
7335 | } | |
7336 | /* I don't think we can get here. Maybe I should assert this | |
7337 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7338 | Fall through. */ | |
7339 | #if defined(USE_LONG_DOUBLE) | |
7340 | 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 | 7341 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 7342 | #else |
1779d84d | 7343 | 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 | 7344 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
7345 | #endif |
7346 | } | |
7347 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 7348 | sv_setnv(sv,Atof(SvPVX_const(sv)) + 1.0); |
79072805 LW |
7349 | return; |
7350 | } | |
7351 | d--; | |
3f7c398e | 7352 | while (d >= SvPVX_const(sv)) { |
79072805 LW |
7353 | if (isDIGIT(*d)) { |
7354 | if (++*d <= '9') | |
7355 | return; | |
7356 | *(d--) = '0'; | |
7357 | } | |
7358 | else { | |
9d116dd7 JH |
7359 | #ifdef EBCDIC |
7360 | /* MKS: The original code here died if letters weren't consecutive. | |
7361 | * at least it didn't have to worry about non-C locales. The | |
7362 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 7363 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
7364 | * [A-Za-z] are accepted by isALPHA in the C locale. |
7365 | */ | |
7366 | if (*d != 'z' && *d != 'Z') { | |
7367 | do { ++*d; } while (!isALPHA(*d)); | |
7368 | return; | |
7369 | } | |
7370 | *(d--) -= 'z' - 'a'; | |
7371 | #else | |
79072805 LW |
7372 | ++*d; |
7373 | if (isALPHA(*d)) | |
7374 | return; | |
7375 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 7376 | #endif |
79072805 LW |
7377 | } |
7378 | } | |
7379 | /* oh,oh, the number grew */ | |
7380 | SvGROW(sv, SvCUR(sv) + 2); | |
b162af07 | 7381 | SvCUR_set(sv, SvCUR(sv) + 1); |
3f7c398e | 7382 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX_const(sv); d--) |
79072805 LW |
7383 | *d = d[-1]; |
7384 | if (isDIGIT(d[1])) | |
7385 | *d = '1'; | |
7386 | else | |
7387 | *d = d[1]; | |
7388 | } | |
7389 | ||
954c1994 GS |
7390 | /* |
7391 | =for apidoc sv_dec | |
7392 | ||
645c22ef DM |
7393 | Auto-decrement of the value in the SV, doing string to numeric conversion |
7394 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7395 | |
7396 | =cut | |
7397 | */ | |
7398 | ||
79072805 | 7399 | void |
864dbfa3 | 7400 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 7401 | { |
463ee0b2 LW |
7402 | int flags; |
7403 | ||
79072805 LW |
7404 | if (!sv) |
7405 | return; | |
b23a5f78 GB |
7406 | if (SvGMAGICAL(sv)) |
7407 | mg_get(sv); | |
ed6116ce | 7408 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7409 | if (SvIsCOW(sv)) |
7410 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7411 | if (SvREADONLY(sv)) { |
923e4eb5 | 7412 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7413 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7414 | } |
a0d0e21e | 7415 | if (SvROK(sv)) { |
b5be31e9 | 7416 | IV i; |
9e7bc3e8 JD |
7417 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
7418 | return; | |
56431972 | 7419 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7420 | sv_unref(sv); |
7421 | sv_setiv(sv, i); | |
a0d0e21e | 7422 | } |
ed6116ce | 7423 | } |
28e5dec8 JH |
7424 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
7425 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 7426 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7427 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
7428 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7429 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7430 | oops_its_int: |
59d8ce62 | 7431 | #endif |
25da4f38 IZ |
7432 | if (SvIsUV(sv)) { |
7433 | if (SvUVX(sv) == 0) { | |
7434 | (void)SvIOK_only(sv); | |
45977657 | 7435 | SvIV_set(sv, -1); |
25da4f38 IZ |
7436 | } |
7437 | else { | |
7438 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 7439 | SvUV_set(sv, SvUVX(sv) + 1); |
1c846c1f | 7440 | } |
25da4f38 IZ |
7441 | } else { |
7442 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 7443 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
7444 | else { |
7445 | (void)SvIOK_only(sv); | |
45977657 | 7446 | SvIV_set(sv, SvIVX(sv) - 1); |
1c846c1f | 7447 | } |
55497cff | 7448 | } |
7449 | return; | |
7450 | } | |
28e5dec8 | 7451 | if (flags & SVp_NOK) { |
9d6ce603 | 7452 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
7453 | (void)SvNOK_only(sv); |
7454 | return; | |
7455 | } | |
8990e307 | 7456 | if (!(flags & SVp_POK)) { |
4633a7c4 LW |
7457 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
7458 | sv_upgrade(sv, SVt_NV); | |
f599b64b | 7459 | SvNV_set(sv, 1.0); |
a0d0e21e | 7460 | (void)SvNOK_only(sv); |
79072805 LW |
7461 | return; |
7462 | } | |
28e5dec8 JH |
7463 | #ifdef PERL_PRESERVE_IVUV |
7464 | { | |
504618e9 | 7465 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7466 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7467 | /* Need to try really hard to see if it's an integer. | |
7468 | 9.22337203685478e+18 is an integer. | |
7469 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7470 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
7471 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
7472 | or we go insane. */ | |
d460ef45 | 7473 | |
28e5dec8 JH |
7474 | (void) sv_2iv(sv); |
7475 | if (SvIOK(sv)) | |
7476 | goto oops_its_int; | |
7477 | ||
7478 | /* sv_2iv *should* have made this an NV */ | |
7479 | if (flags & SVp_NOK) { | |
7480 | (void)SvNOK_only(sv); | |
9d6ce603 | 7481 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
7482 | return; |
7483 | } | |
7484 | /* I don't think we can get here. Maybe I should assert this | |
7485 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7486 | Fall through. */ | |
7487 | #if defined(USE_LONG_DOUBLE) | |
7488 | 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 | 7489 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 7490 | #else |
1779d84d | 7491 | 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 | 7492 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
7493 | #endif |
7494 | } | |
7495 | } | |
7496 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 7497 | sv_setnv(sv,Atof(SvPVX_const(sv)) - 1.0); /* punt */ |
79072805 LW |
7498 | } |
7499 | ||
954c1994 GS |
7500 | /* |
7501 | =for apidoc sv_mortalcopy | |
7502 | ||
645c22ef | 7503 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
7504 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
7505 | explicit call to FREETMPS, or by an implicit call at places such as | |
7506 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
7507 | |
7508 | =cut | |
7509 | */ | |
7510 | ||
79072805 LW |
7511 | /* Make a string that will exist for the duration of the expression |
7512 | * evaluation. Actually, it may have to last longer than that, but | |
7513 | * hopefully we won't free it until it has been assigned to a | |
7514 | * permanent location. */ | |
7515 | ||
7516 | SV * | |
864dbfa3 | 7517 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 7518 | { |
463ee0b2 | 7519 | register SV *sv; |
b881518d | 7520 | |
4561caa4 | 7521 | new_SV(sv); |
79072805 | 7522 | sv_setsv(sv,oldstr); |
677b06e3 GS |
7523 | EXTEND_MORTAL(1); |
7524 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
7525 | SvTEMP_on(sv); |
7526 | return sv; | |
7527 | } | |
7528 | ||
954c1994 GS |
7529 | /* |
7530 | =for apidoc sv_newmortal | |
7531 | ||
645c22ef | 7532 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
7533 | set to 1. It will be destroyed "soon", either by an explicit call to |
7534 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
7535 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
7536 | |
7537 | =cut | |
7538 | */ | |
7539 | ||
8990e307 | 7540 | SV * |
864dbfa3 | 7541 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
7542 | { |
7543 | register SV *sv; | |
7544 | ||
4561caa4 | 7545 | new_SV(sv); |
8990e307 | 7546 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
7547 | EXTEND_MORTAL(1); |
7548 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
7549 | return sv; |
7550 | } | |
7551 | ||
954c1994 GS |
7552 | /* |
7553 | =for apidoc sv_2mortal | |
7554 | ||
d4236ebc DM |
7555 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
7556 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
7557 | statement boundaries. SvTEMP() is turned on which means that the SV's |
7558 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
7559 | and C<sv_mortalcopy>. | |
954c1994 GS |
7560 | |
7561 | =cut | |
7562 | */ | |
7563 | ||
79072805 | 7564 | SV * |
864dbfa3 | 7565 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 | 7566 | { |
27da23d5 | 7567 | dVAR; |
79072805 LW |
7568 | if (!sv) |
7569 | return sv; | |
d689ffdd | 7570 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 7571 | return sv; |
677b06e3 GS |
7572 | EXTEND_MORTAL(1); |
7573 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 7574 | SvTEMP_on(sv); |
79072805 LW |
7575 | return sv; |
7576 | } | |
7577 | ||
954c1994 GS |
7578 | /* |
7579 | =for apidoc newSVpv | |
7580 | ||
7581 | Creates a new SV and copies a string into it. The reference count for the | |
7582 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
7583 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
7584 | ||
7585 | =cut | |
7586 | */ | |
7587 | ||
79072805 | 7588 | SV * |
864dbfa3 | 7589 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 7590 | { |
463ee0b2 | 7591 | register SV *sv; |
79072805 | 7592 | |
4561caa4 | 7593 | new_SV(sv); |
616d8c9c | 7594 | sv_setpvn(sv,s,len ? len : strlen(s)); |
79072805 LW |
7595 | return sv; |
7596 | } | |
7597 | ||
954c1994 GS |
7598 | /* |
7599 | =for apidoc newSVpvn | |
7600 | ||
7601 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 7602 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 7603 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 7604 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
7605 | |
7606 | =cut | |
7607 | */ | |
7608 | ||
9da1e3b5 | 7609 | SV * |
864dbfa3 | 7610 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7611 | { |
7612 | register SV *sv; | |
7613 | ||
7614 | new_SV(sv); | |
9da1e3b5 MUN |
7615 | sv_setpvn(sv,s,len); |
7616 | return sv; | |
7617 | } | |
7618 | ||
bd08039b NC |
7619 | |
7620 | /* | |
926f8064 | 7621 | =for apidoc newSVhek |
bd08039b NC |
7622 | |
7623 | Creates a new SV from the hash key structure. It will generate scalars that | |
5aaec2b4 NC |
7624 | point to the shared string table where possible. Returns a new (undefined) |
7625 | SV if the hek is NULL. | |
bd08039b NC |
7626 | |
7627 | =cut | |
7628 | */ | |
7629 | ||
7630 | SV * | |
c1b02ed8 | 7631 | Perl_newSVhek(pTHX_ const HEK *hek) |
bd08039b | 7632 | { |
5aaec2b4 NC |
7633 | if (!hek) { |
7634 | SV *sv; | |
7635 | ||
7636 | new_SV(sv); | |
7637 | return sv; | |
7638 | } | |
7639 | ||
bd08039b NC |
7640 | if (HEK_LEN(hek) == HEf_SVKEY) { |
7641 | return newSVsv(*(SV**)HEK_KEY(hek)); | |
7642 | } else { | |
7643 | const int flags = HEK_FLAGS(hek); | |
7644 | if (flags & HVhek_WASUTF8) { | |
7645 | /* Trouble :-) | |
7646 | Andreas would like keys he put in as utf8 to come back as utf8 | |
7647 | */ | |
7648 | STRLEN utf8_len = HEK_LEN(hek); | |
7649 | U8 *as_utf8 = bytes_to_utf8 ((U8*)HEK_KEY(hek), &utf8_len); | |
7650 | SV *sv = newSVpvn ((char*)as_utf8, utf8_len); | |
7651 | ||
7652 | SvUTF8_on (sv); | |
7653 | Safefree (as_utf8); /* bytes_to_utf8() allocates a new string */ | |
7654 | return sv; | |
7655 | } else if (flags & HVhek_REHASH) { | |
7656 | /* We don't have a pointer to the hv, so we have to replicate the | |
7657 | flag into every HEK. This hv is using custom a hasing | |
7658 | algorithm. Hence we can't return a shared string scalar, as | |
7659 | that would contain the (wrong) hash value, and might get passed | |
7660 | into an hv routine with a regular hash */ | |
7661 | ||
7662 | SV *sv = newSVpvn (HEK_KEY(hek), HEK_LEN(hek)); | |
7663 | if (HEK_UTF8(hek)) | |
7664 | SvUTF8_on (sv); | |
7665 | return sv; | |
7666 | } | |
7667 | /* This will be overwhelminly the most common case. */ | |
7668 | return newSVpvn_share(HEK_KEY(hek), | |
7669 | (HEK_UTF8(hek) ? -HEK_LEN(hek) : HEK_LEN(hek)), | |
7670 | HEK_HASH(hek)); | |
7671 | } | |
7672 | } | |
7673 | ||
1c846c1f NIS |
7674 | /* |
7675 | =for apidoc newSVpvn_share | |
7676 | ||
3f7c398e | 7677 | Creates a new SV with its SvPVX_const pointing to a shared string in the string |
645c22ef DM |
7678 | table. If the string does not already exist in the table, it is created |
7679 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7680 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7681 | otherwise the hash is computed. The idea here is that as the string table | |
3f7c398e | 7682 | is used for shared hash keys these strings will have SvPVX_const == HeKEY and |
645c22ef | 7683 | hash lookup will avoid string compare. |
1c846c1f NIS |
7684 | |
7685 | =cut | |
7686 | */ | |
7687 | ||
7688 | SV * | |
c3654f1a | 7689 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7690 | { |
7691 | register SV *sv; | |
c3654f1a IH |
7692 | bool is_utf8 = FALSE; |
7693 | if (len < 0) { | |
77caf834 | 7694 | STRLEN tmplen = -len; |
c3654f1a | 7695 | is_utf8 = TRUE; |
75a54232 | 7696 | /* See the note in hv.c:hv_fetch() --jhi */ |
e1ec3a88 | 7697 | src = (char*)bytes_from_utf8((const U8*)src, &tmplen, &is_utf8); |
75a54232 JH |
7698 | len = tmplen; |
7699 | } | |
1c846c1f | 7700 | if (!hash) |
5afd6d42 | 7701 | PERL_HASH(hash, src, len); |
1c846c1f NIS |
7702 | new_SV(sv); |
7703 | sv_upgrade(sv, SVt_PVIV); | |
f880fe2f | 7704 | SvPV_set(sv, sharepvn(src, is_utf8?-len:len, hash)); |
b162af07 | 7705 | SvCUR_set(sv, len); |
607fa7f2 | 7706 | SvUV_set(sv, hash); |
b162af07 | 7707 | SvLEN_set(sv, 0); |
1c846c1f NIS |
7708 | SvREADONLY_on(sv); |
7709 | SvFAKE_on(sv); | |
7710 | SvPOK_on(sv); | |
c3654f1a IH |
7711 | if (is_utf8) |
7712 | SvUTF8_on(sv); | |
1c846c1f NIS |
7713 | return sv; |
7714 | } | |
7715 | ||
645c22ef | 7716 | |
cea2e8a9 | 7717 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7718 | |
7719 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7720 | * version of the main function, (which may itself be aliased to us). | |
7721 | * Don't access this version directly. | |
7722 | */ | |
7723 | ||
46fc3d4c | 7724 | SV * |
cea2e8a9 | 7725 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7726 | { |
cea2e8a9 | 7727 | dTHX; |
46fc3d4c | 7728 | register SV *sv; |
7729 | va_list args; | |
46fc3d4c | 7730 | va_start(args, pat); |
c5be433b | 7731 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7732 | va_end(args); |
7733 | return sv; | |
7734 | } | |
cea2e8a9 | 7735 | #endif |
46fc3d4c | 7736 | |
954c1994 GS |
7737 | /* |
7738 | =for apidoc newSVpvf | |
7739 | ||
645c22ef | 7740 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7741 | C<sprintf>. |
7742 | ||
7743 | =cut | |
7744 | */ | |
7745 | ||
cea2e8a9 GS |
7746 | SV * |
7747 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7748 | { | |
7749 | register SV *sv; | |
7750 | va_list args; | |
cea2e8a9 | 7751 | va_start(args, pat); |
c5be433b | 7752 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7753 | va_end(args); |
7754 | return sv; | |
7755 | } | |
46fc3d4c | 7756 | |
645c22ef DM |
7757 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7758 | ||
79072805 | 7759 | SV * |
c5be433b GS |
7760 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7761 | { | |
7762 | register SV *sv; | |
7763 | new_SV(sv); | |
7764 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7765 | return sv; | |
7766 | } | |
7767 | ||
954c1994 GS |
7768 | /* |
7769 | =for apidoc newSVnv | |
7770 | ||
7771 | Creates a new SV and copies a floating point value into it. | |
7772 | The reference count for the SV is set to 1. | |
7773 | ||
7774 | =cut | |
7775 | */ | |
7776 | ||
c5be433b | 7777 | SV * |
65202027 | 7778 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7779 | { |
463ee0b2 | 7780 | register SV *sv; |
79072805 | 7781 | |
4561caa4 | 7782 | new_SV(sv); |
79072805 LW |
7783 | sv_setnv(sv,n); |
7784 | return sv; | |
7785 | } | |
7786 | ||
954c1994 GS |
7787 | /* |
7788 | =for apidoc newSViv | |
7789 | ||
7790 | Creates a new SV and copies an integer into it. The reference count for the | |
7791 | SV is set to 1. | |
7792 | ||
7793 | =cut | |
7794 | */ | |
7795 | ||
79072805 | 7796 | SV * |
864dbfa3 | 7797 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7798 | { |
463ee0b2 | 7799 | register SV *sv; |
79072805 | 7800 | |
4561caa4 | 7801 | new_SV(sv); |
79072805 LW |
7802 | sv_setiv(sv,i); |
7803 | return sv; | |
7804 | } | |
7805 | ||
954c1994 | 7806 | /* |
1a3327fb JH |
7807 | =for apidoc newSVuv |
7808 | ||
7809 | Creates a new SV and copies an unsigned integer into it. | |
7810 | The reference count for the SV is set to 1. | |
7811 | ||
7812 | =cut | |
7813 | */ | |
7814 | ||
7815 | SV * | |
7816 | Perl_newSVuv(pTHX_ UV u) | |
7817 | { | |
7818 | register SV *sv; | |
7819 | ||
7820 | new_SV(sv); | |
7821 | sv_setuv(sv,u); | |
7822 | return sv; | |
7823 | } | |
7824 | ||
7825 | /* | |
954c1994 GS |
7826 | =for apidoc newRV_noinc |
7827 | ||
7828 | Creates an RV wrapper for an SV. The reference count for the original | |
7829 | SV is B<not> incremented. | |
7830 | ||
7831 | =cut | |
7832 | */ | |
7833 | ||
2304df62 | 7834 | SV * |
864dbfa3 | 7835 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7836 | { |
7837 | register SV *sv; | |
7838 | ||
4561caa4 | 7839 | new_SV(sv); |
2304df62 | 7840 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7841 | SvTEMP_off(tmpRef); |
b162af07 | 7842 | SvRV_set(sv, tmpRef); |
2304df62 | 7843 | SvROK_on(sv); |
2304df62 AD |
7844 | return sv; |
7845 | } | |
7846 | ||
ff276b08 | 7847 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7848 | * newRV_inc is in fact #defined to newRV in sv.h |
7849 | */ | |
7850 | ||
5f05dabc | 7851 | SV * |
864dbfa3 | 7852 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7853 | { |
5f6447b6 | 7854 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7855 | } |
5f05dabc | 7856 | |
954c1994 GS |
7857 | /* |
7858 | =for apidoc newSVsv | |
7859 | ||
7860 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7861 | (Uses C<sv_setsv>). |
954c1994 GS |
7862 | |
7863 | =cut | |
7864 | */ | |
7865 | ||
79072805 | 7866 | SV * |
864dbfa3 | 7867 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7868 | { |
463ee0b2 | 7869 | register SV *sv; |
79072805 LW |
7870 | |
7871 | if (!old) | |
7872 | return Nullsv; | |
8990e307 | 7873 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7874 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7875 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7876 | return Nullsv; |
7877 | } | |
4561caa4 | 7878 | new_SV(sv); |
e90aabeb NC |
7879 | /* SV_GMAGIC is the default for sv_setv() |
7880 | SV_NOSTEAL prevents TEMP buffers being, well, stolen, and saves games | |
7881 | with SvTEMP_off and SvTEMP_on round a call to sv_setsv. */ | |
7882 | sv_setsv_flags(sv, old, SV_GMAGIC | SV_NOSTEAL); | |
463ee0b2 | 7883 | return sv; |
79072805 LW |
7884 | } |
7885 | ||
645c22ef DM |
7886 | /* |
7887 | =for apidoc sv_reset | |
7888 | ||
7889 | Underlying implementation for the C<reset> Perl function. | |
7890 | Note that the perl-level function is vaguely deprecated. | |
7891 | ||
7892 | =cut | |
7893 | */ | |
7894 | ||
79072805 | 7895 | void |
e1ec3a88 | 7896 | Perl_sv_reset(pTHX_ register const char *s, HV *stash) |
79072805 | 7897 | { |
27da23d5 | 7898 | dVAR; |
4802d5d7 | 7899 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7900 | |
49d8d3a1 MB |
7901 | if (!stash) |
7902 | return; | |
7903 | ||
79072805 | 7904 | if (!*s) { /* reset ?? searches */ |
8d2f4536 NC |
7905 | MAGIC *mg = mg_find((SV *)stash, PERL_MAGIC_symtab); |
7906 | if (mg) { | |
7907 | PMOP *pm = (PMOP *) mg->mg_obj; | |
7908 | while (pm) { | |
7909 | pm->op_pmdynflags &= ~PMdf_USED; | |
7910 | pm = pm->op_pmnext; | |
7911 | } | |
79072805 LW |
7912 | } |
7913 | return; | |
7914 | } | |
7915 | ||
7916 | /* reset variables */ | |
7917 | ||
7918 | if (!HvARRAY(stash)) | |
7919 | return; | |
463ee0b2 LW |
7920 | |
7921 | Zero(todo, 256, char); | |
79072805 | 7922 | while (*s) { |
b464bac0 AL |
7923 | I32 max; |
7924 | I32 i = (unsigned char)*s; | |
79072805 LW |
7925 | if (s[1] == '-') { |
7926 | s += 2; | |
7927 | } | |
4802d5d7 | 7928 | max = (unsigned char)*s++; |
79072805 | 7929 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7930 | todo[i] = 1; |
7931 | } | |
a0d0e21e | 7932 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
b464bac0 | 7933 | HE *entry; |
79072805 | 7934 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7935 | entry; |
7936 | entry = HeNEXT(entry)) | |
7937 | { | |
b464bac0 AL |
7938 | register GV *gv; |
7939 | register SV *sv; | |
7940 | ||
1edc1566 | 7941 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7942 | continue; |
1edc1566 | 7943 | gv = (GV*)HeVAL(entry); |
79072805 | 7944 | sv = GvSV(gv); |
9e35f4b3 GS |
7945 | if (SvTHINKFIRST(sv)) { |
7946 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7947 | sv_unref(sv); | |
7948 | continue; | |
7949 | } | |
0c34ef67 | 7950 | SvOK_off(sv); |
79072805 LW |
7951 | if (SvTYPE(sv) >= SVt_PV) { |
7952 | SvCUR_set(sv, 0); | |
3f7c398e | 7953 | if (SvPVX_const(sv) != Nullch) |
463ee0b2 | 7954 | *SvPVX(sv) = '\0'; |
44a8e56a | 7955 | SvTAINT(sv); |
79072805 LW |
7956 | } |
7957 | if (GvAV(gv)) { | |
7958 | av_clear(GvAV(gv)); | |
7959 | } | |
bfcb3514 | 7960 | if (GvHV(gv) && !HvNAME_get(GvHV(gv))) { |
463ee0b2 | 7961 | hv_clear(GvHV(gv)); |
2f42fcb0 | 7962 | #ifndef PERL_MICRO |
fa6a1c44 | 7963 | #ifdef USE_ENVIRON_ARRAY |
4efc5df6 GS |
7964 | if (gv == PL_envgv |
7965 | # ifdef USE_ITHREADS | |
7966 | && PL_curinterp == aTHX | |
7967 | # endif | |
7968 | ) | |
7969 | { | |
79072805 | 7970 | environ[0] = Nullch; |
4efc5df6 | 7971 | } |
a0d0e21e | 7972 | #endif |
2f42fcb0 | 7973 | #endif /* !PERL_MICRO */ |
79072805 LW |
7974 | } |
7975 | } | |
7976 | } | |
7977 | } | |
7978 | } | |
7979 | ||
645c22ef DM |
7980 | /* |
7981 | =for apidoc sv_2io | |
7982 | ||
7983 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7984 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7985 | named after the PV if we're a string. | |
7986 | ||
7987 | =cut | |
7988 | */ | |
7989 | ||
46fc3d4c | 7990 | IO* |
864dbfa3 | 7991 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7992 | { |
7993 | IO* io; | |
7994 | GV* gv; | |
7995 | ||
7996 | switch (SvTYPE(sv)) { | |
7997 | case SVt_PVIO: | |
7998 | io = (IO*)sv; | |
7999 | break; | |
8000 | case SVt_PVGV: | |
8001 | gv = (GV*)sv; | |
8002 | io = GvIO(gv); | |
8003 | if (!io) | |
cea2e8a9 | 8004 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 8005 | break; |
8006 | default: | |
8007 | if (!SvOK(sv)) | |
cea2e8a9 | 8008 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 8009 | if (SvROK(sv)) |
8010 | return sv_2io(SvRV(sv)); | |
7a5fd60d | 8011 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
46fc3d4c | 8012 | if (gv) |
8013 | io = GvIO(gv); | |
8014 | else | |
8015 | io = 0; | |
8016 | if (!io) | |
35c1215d | 8017 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 8018 | break; |
8019 | } | |
8020 | return io; | |
8021 | } | |
8022 | ||
645c22ef DM |
8023 | /* |
8024 | =for apidoc sv_2cv | |
8025 | ||
8026 | Using various gambits, try to get a CV from an SV; in addition, try if | |
8027 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
8028 | ||
8029 | =cut | |
8030 | */ | |
8031 | ||
79072805 | 8032 | CV * |
864dbfa3 | 8033 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 8034 | { |
27da23d5 | 8035 | dVAR; |
c04a4dfe JH |
8036 | GV *gv = Nullgv; |
8037 | CV *cv = Nullcv; | |
79072805 LW |
8038 | |
8039 | if (!sv) | |
93a17b20 | 8040 | return *gvp = Nullgv, Nullcv; |
79072805 | 8041 | switch (SvTYPE(sv)) { |
79072805 LW |
8042 | case SVt_PVCV: |
8043 | *st = CvSTASH(sv); | |
8044 | *gvp = Nullgv; | |
8045 | return (CV*)sv; | |
8046 | case SVt_PVHV: | |
8047 | case SVt_PVAV: | |
8048 | *gvp = Nullgv; | |
8049 | return Nullcv; | |
8990e307 LW |
8050 | case SVt_PVGV: |
8051 | gv = (GV*)sv; | |
a0d0e21e | 8052 | *gvp = gv; |
8990e307 LW |
8053 | *st = GvESTASH(gv); |
8054 | goto fix_gv; | |
8055 | ||
79072805 | 8056 | default: |
a0d0e21e LW |
8057 | if (SvGMAGICAL(sv)) |
8058 | mg_get(sv); | |
8059 | if (SvROK(sv)) { | |
f5284f61 IZ |
8060 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
8061 | tryAMAGICunDEREF(to_cv); | |
8062 | ||
62f274bf GS |
8063 | sv = SvRV(sv); |
8064 | if (SvTYPE(sv) == SVt_PVCV) { | |
8065 | cv = (CV*)sv; | |
8066 | *gvp = Nullgv; | |
8067 | *st = CvSTASH(cv); | |
8068 | return cv; | |
8069 | } | |
8070 | else if(isGV(sv)) | |
8071 | gv = (GV*)sv; | |
8072 | else | |
cea2e8a9 | 8073 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 8074 | } |
62f274bf | 8075 | else if (isGV(sv)) |
79072805 LW |
8076 | gv = (GV*)sv; |
8077 | else | |
7a5fd60d | 8078 | gv = gv_fetchsv(sv, lref, SVt_PVCV); |
79072805 LW |
8079 | *gvp = gv; |
8080 | if (!gv) | |
8081 | return Nullcv; | |
8082 | *st = GvESTASH(gv); | |
8990e307 | 8083 | fix_gv: |
8ebc5c01 | 8084 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 8085 | SV *tmpsv; |
748a9306 | 8086 | ENTER; |
4633a7c4 | 8087 | tmpsv = NEWSV(704,0); |
16660edb | 8088 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
8089 | /* XXX this is probably not what they think they're getting. |
8090 | * It has the same effect as "sub name;", i.e. just a forward | |
8091 | * declaration! */ | |
774d564b | 8092 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
8093 | newSVOP(OP_CONST, 0, tmpsv), |
8094 | Nullop, | |
8990e307 | 8095 | Nullop); |
748a9306 | 8096 | LEAVE; |
8ebc5c01 | 8097 | if (!GvCVu(gv)) |
35c1215d NC |
8098 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
8099 | sv); | |
8990e307 | 8100 | } |
8ebc5c01 | 8101 | return GvCVu(gv); |
79072805 LW |
8102 | } |
8103 | } | |
8104 | ||
c461cf8f JH |
8105 | /* |
8106 | =for apidoc sv_true | |
8107 | ||
8108 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
8109 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
8110 | instead use an in-line version. | |
c461cf8f JH |
8111 | |
8112 | =cut | |
8113 | */ | |
8114 | ||
79072805 | 8115 | I32 |
864dbfa3 | 8116 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 8117 | { |
8990e307 LW |
8118 | if (!sv) |
8119 | return 0; | |
79072805 | 8120 | if (SvPOK(sv)) { |
e1ec3a88 | 8121 | const register XPV* tXpv; |
4e35701f | 8122 | if ((tXpv = (XPV*)SvANY(sv)) && |
c2f1de04 | 8123 | (tXpv->xpv_cur > 1 || |
339049b0 | 8124 | (tXpv->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
79072805 LW |
8125 | return 1; |
8126 | else | |
8127 | return 0; | |
8128 | } | |
8129 | else { | |
8130 | if (SvIOK(sv)) | |
463ee0b2 | 8131 | return SvIVX(sv) != 0; |
79072805 LW |
8132 | else { |
8133 | if (SvNOK(sv)) | |
463ee0b2 | 8134 | return SvNVX(sv) != 0.0; |
79072805 | 8135 | else |
463ee0b2 | 8136 | return sv_2bool(sv); |
79072805 LW |
8137 | } |
8138 | } | |
8139 | } | |
79072805 | 8140 | |
645c22ef DM |
8141 | /* |
8142 | =for apidoc sv_iv | |
8143 | ||
8144 | A private implementation of the C<SvIVx> macro for compilers which can't | |
8145 | cope with complex macro expressions. Always use the macro instead. | |
8146 | ||
8147 | =cut | |
8148 | */ | |
8149 | ||
ff68c719 | 8150 | IV |
864dbfa3 | 8151 | Perl_sv_iv(pTHX_ register SV *sv) |
85e6fe83 | 8152 | { |
25da4f38 IZ |
8153 | if (SvIOK(sv)) { |
8154 | if (SvIsUV(sv)) | |
8155 | return (IV)SvUVX(sv); | |
ff68c719 | 8156 | return SvIVX(sv); |
25da4f38 | 8157 | } |
ff68c719 | 8158 | return sv_2iv(sv); |
85e6fe83 | 8159 | } |
85e6fe83 | 8160 | |
645c22ef DM |
8161 | /* |
8162 | =for apidoc sv_uv | |
8163 | ||
8164 | A private implementation of the C<SvUVx> macro for compilers which can't | |
8165 | cope with complex macro expressions. Always use the macro instead. | |
8166 | ||
8167 | =cut | |
8168 | */ | |
8169 | ||
ff68c719 | 8170 | UV |
864dbfa3 | 8171 | Perl_sv_uv(pTHX_ register SV *sv) |
ff68c719 | 8172 | { |
25da4f38 IZ |
8173 | if (SvIOK(sv)) { |
8174 | if (SvIsUV(sv)) | |
8175 | return SvUVX(sv); | |
8176 | return (UV)SvIVX(sv); | |
8177 | } | |
ff68c719 | 8178 | return sv_2uv(sv); |
8179 | } | |
85e6fe83 | 8180 | |
645c22ef DM |
8181 | /* |
8182 | =for apidoc sv_nv | |
8183 | ||
8184 | A private implementation of the C<SvNVx> macro for compilers which can't | |
8185 | cope with complex macro expressions. Always use the macro instead. | |
8186 | ||
8187 | =cut | |
8188 | */ | |
8189 | ||
65202027 | 8190 | NV |
864dbfa3 | 8191 | Perl_sv_nv(pTHX_ register SV *sv) |
79072805 | 8192 | { |
ff68c719 | 8193 | if (SvNOK(sv)) |
8194 | return SvNVX(sv); | |
8195 | return sv_2nv(sv); | |
79072805 | 8196 | } |
79072805 | 8197 | |
09540bc3 JH |
8198 | /* sv_pv() is now a macro using SvPV_nolen(); |
8199 | * this function provided for binary compatibility only | |
8200 | */ | |
8201 | ||
8202 | char * | |
8203 | Perl_sv_pv(pTHX_ SV *sv) | |
8204 | { | |
8205 | STRLEN n_a; | |
8206 | ||
8207 | if (SvPOK(sv)) | |
8208 | return SvPVX(sv); | |
8209 | ||
8210 | return sv_2pv(sv, &n_a); | |
8211 | } | |
8212 | ||
645c22ef DM |
8213 | /* |
8214 | =for apidoc sv_pv | |
8215 | ||
baca2b92 | 8216 | Use the C<SvPV_nolen> macro instead |
645c22ef | 8217 | |
645c22ef DM |
8218 | =for apidoc sv_pvn |
8219 | ||
8220 | A private implementation of the C<SvPV> macro for compilers which can't | |
8221 | cope with complex macro expressions. Always use the macro instead. | |
8222 | ||
8223 | =cut | |
8224 | */ | |
8225 | ||
1fa8b10d | 8226 | char * |
864dbfa3 | 8227 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) |
79072805 | 8228 | { |
85e6fe83 LW |
8229 | if (SvPOK(sv)) { |
8230 | *lp = SvCUR(sv); | |
a0d0e21e | 8231 | return SvPVX(sv); |
85e6fe83 | 8232 | } |
463ee0b2 | 8233 | return sv_2pv(sv, lp); |
79072805 | 8234 | } |
79072805 | 8235 | |
6e9d1081 NC |
8236 | |
8237 | char * | |
8238 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
8239 | { | |
8240 | if (SvPOK(sv)) { | |
8241 | *lp = SvCUR(sv); | |
8242 | return SvPVX(sv); | |
8243 | } | |
8244 | return sv_2pv_flags(sv, lp, 0); | |
8245 | } | |
8246 | ||
09540bc3 JH |
8247 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); |
8248 | * this function provided for binary compatibility only | |
8249 | */ | |
8250 | ||
8251 | char * | |
8252 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
8253 | { | |
8254 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
8255 | } | |
8256 | ||
c461cf8f JH |
8257 | /* |
8258 | =for apidoc sv_pvn_force | |
8259 | ||
8260 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
8261 | A private implementation of the C<SvPV_force> macro for compilers which |
8262 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 8263 | |
8d6d96c1 HS |
8264 | =for apidoc sv_pvn_force_flags |
8265 | ||
8266 | Get a sensible string out of the SV somehow. | |
8267 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
8268 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
8269 | implemented in terms of this function. | |
645c22ef DM |
8270 | You normally want to use the various wrapper macros instead: see |
8271 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
8272 | |
8273 | =cut | |
8274 | */ | |
8275 | ||
8276 | char * | |
8277 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
8278 | { | |
a0d0e21e | 8279 | |
6fc92669 | 8280 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 8281 | sv_force_normal_flags(sv, 0); |
1c846c1f | 8282 | |
a0d0e21e LW |
8283 | if (SvPOK(sv)) { |
8284 | *lp = SvCUR(sv); | |
8285 | } | |
8286 | else { | |
a3b680e6 | 8287 | char *s; |
4d84ee25 NC |
8288 | |
8289 | if (SvREADONLY(sv) && !(flags & SV_MUTABLE_RETURN)) { | |
8290 | if (PL_op) | |
8291 | Perl_croak(aTHX_ "Can't coerce readonly %s to string in %s", | |
8292 | sv_reftype(sv,0), OP_NAME(PL_op)); | |
8293 | else | |
8294 | Perl_croak(aTHX_ "Can't coerce readonly %s to string", | |
8295 | sv_reftype(sv,0)); | |
8296 | } | |
748a9306 | 8297 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
cea2e8a9 | 8298 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 8299 | OP_NAME(PL_op)); |
a0d0e21e | 8300 | } |
4633a7c4 | 8301 | else |
8d6d96c1 | 8302 | s = sv_2pv_flags(sv, lp, flags); |
3f7c398e | 8303 | if (s != SvPVX_const(sv)) { /* Almost, but not quite, sv_setpvn() */ |
a3b680e6 | 8304 | const STRLEN len = *lp; |
1c846c1f | 8305 | |
a0d0e21e LW |
8306 | if (SvROK(sv)) |
8307 | sv_unref(sv); | |
862a34c6 | 8308 | SvUPGRADE(sv, SVt_PV); /* Never FALSE */ |
a0d0e21e | 8309 | SvGROW(sv, len + 1); |
3f7c398e | 8310 | Move(s,SvPVX_const(sv),len,char); |
a0d0e21e LW |
8311 | SvCUR_set(sv, len); |
8312 | *SvEND(sv) = '\0'; | |
8313 | } | |
8314 | if (!SvPOK(sv)) { | |
8315 | SvPOK_on(sv); /* validate pointer */ | |
8316 | SvTAINT(sv); | |
1d7c1841 | 8317 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 8318 | PTR2UV(sv),SvPVX_const(sv))); |
a0d0e21e LW |
8319 | } |
8320 | } | |
4d84ee25 | 8321 | return SvPVX_mutable(sv); |
a0d0e21e LW |
8322 | } |
8323 | ||
09540bc3 JH |
8324 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); |
8325 | * this function provided for binary compatibility only | |
8326 | */ | |
8327 | ||
8328 | char * | |
8329 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
8330 | { | |
8331 | sv_utf8_downgrade(sv,0); | |
8332 | return sv_pv(sv); | |
8333 | } | |
8334 | ||
645c22ef DM |
8335 | /* |
8336 | =for apidoc sv_pvbyte | |
8337 | ||
baca2b92 | 8338 | Use C<SvPVbyte_nolen> instead. |
645c22ef | 8339 | |
645c22ef DM |
8340 | =for apidoc sv_pvbyten |
8341 | ||
8342 | A private implementation of the C<SvPVbyte> macro for compilers | |
8343 | which can't cope with complex macro expressions. Always use the macro | |
8344 | instead. | |
8345 | ||
8346 | =cut | |
8347 | */ | |
8348 | ||
7340a771 GS |
8349 | char * |
8350 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
8351 | { | |
ffebcc3e | 8352 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
8353 | return sv_pvn(sv,lp); |
8354 | } | |
8355 | ||
645c22ef DM |
8356 | /* |
8357 | =for apidoc sv_pvbyten_force | |
8358 | ||
8359 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
8360 | which can't cope with complex macro expressions. Always use the macro | |
8361 | instead. | |
8362 | ||
8363 | =cut | |
8364 | */ | |
8365 | ||
7340a771 GS |
8366 | char * |
8367 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
8368 | { | |
46ec2f14 | 8369 | sv_pvn_force(sv,lp); |
ffebcc3e | 8370 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
8371 | *lp = SvCUR(sv); |
8372 | return SvPVX(sv); | |
7340a771 GS |
8373 | } |
8374 | ||
09540bc3 JH |
8375 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
8376 | * this function provided for binary compatibility only | |
8377 | */ | |
8378 | ||
8379 | char * | |
8380 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
8381 | { | |
8382 | sv_utf8_upgrade(sv); | |
8383 | return sv_pv(sv); | |
8384 | } | |
8385 | ||
645c22ef DM |
8386 | /* |
8387 | =for apidoc sv_pvutf8 | |
8388 | ||
baca2b92 | 8389 | Use the C<SvPVutf8_nolen> macro instead |
645c22ef | 8390 | |
645c22ef DM |
8391 | =for apidoc sv_pvutf8n |
8392 | ||
8393 | A private implementation of the C<SvPVutf8> macro for compilers | |
8394 | which can't cope with complex macro expressions. Always use the macro | |
8395 | instead. | |
8396 | ||
8397 | =cut | |
8398 | */ | |
8399 | ||
7340a771 GS |
8400 | char * |
8401 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
8402 | { | |
560a288e | 8403 | sv_utf8_upgrade(sv); |
7340a771 GS |
8404 | return sv_pvn(sv,lp); |
8405 | } | |
8406 | ||
c461cf8f JH |
8407 | /* |
8408 | =for apidoc sv_pvutf8n_force | |
8409 | ||
645c22ef DM |
8410 | A private implementation of the C<SvPVutf8_force> macro for compilers |
8411 | which can't cope with complex macro expressions. Always use the macro | |
8412 | instead. | |
c461cf8f JH |
8413 | |
8414 | =cut | |
8415 | */ | |
8416 | ||
7340a771 GS |
8417 | char * |
8418 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
8419 | { | |
46ec2f14 | 8420 | sv_pvn_force(sv,lp); |
560a288e | 8421 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
8422 | *lp = SvCUR(sv); |
8423 | return SvPVX(sv); | |
7340a771 GS |
8424 | } |
8425 | ||
c461cf8f JH |
8426 | /* |
8427 | =for apidoc sv_reftype | |
8428 | ||
8429 | Returns a string describing what the SV is a reference to. | |
8430 | ||
8431 | =cut | |
8432 | */ | |
8433 | ||
1cb0ed9b | 8434 | char * |
bfed75c6 | 8435 | Perl_sv_reftype(pTHX_ const SV *sv, int ob) |
a0d0e21e | 8436 | { |
07409e01 NC |
8437 | /* The fact that I don't need to downcast to char * everywhere, only in ?: |
8438 | inside return suggests a const propagation bug in g++. */ | |
c86bf373 | 8439 | if (ob && SvOBJECT(sv)) { |
bfcb3514 | 8440 | char *name = HvNAME_get(SvSTASH(sv)); |
07409e01 | 8441 | return name ? name : (char *) "__ANON__"; |
c86bf373 | 8442 | } |
a0d0e21e LW |
8443 | else { |
8444 | switch (SvTYPE(sv)) { | |
8445 | case SVt_NULL: | |
8446 | case SVt_IV: | |
8447 | case SVt_NV: | |
8448 | case SVt_RV: | |
8449 | case SVt_PV: | |
8450 | case SVt_PVIV: | |
8451 | case SVt_PVNV: | |
8452 | case SVt_PVMG: | |
8453 | case SVt_PVBM: | |
1cb0ed9b | 8454 | if (SvVOK(sv)) |
439cb1c4 | 8455 | return "VSTRING"; |
a0d0e21e LW |
8456 | if (SvROK(sv)) |
8457 | return "REF"; | |
8458 | else | |
8459 | return "SCALAR"; | |
1cb0ed9b | 8460 | |
07409e01 | 8461 | case SVt_PVLV: return (char *) (SvROK(sv) ? "REF" |
be65207d DM |
8462 | /* tied lvalues should appear to be |
8463 | * scalars for backwards compatitbility */ | |
8464 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
07409e01 | 8465 | ? "SCALAR" : "LVALUE"); |
a0d0e21e LW |
8466 | case SVt_PVAV: return "ARRAY"; |
8467 | case SVt_PVHV: return "HASH"; | |
8468 | case SVt_PVCV: return "CODE"; | |
8469 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 8470 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 8471 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
8472 | default: return "UNKNOWN"; |
8473 | } | |
8474 | } | |
8475 | } | |
8476 | ||
954c1994 GS |
8477 | /* |
8478 | =for apidoc sv_isobject | |
8479 | ||
8480 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
8481 | object. If the SV is not an RV, or if the object is not blessed, then this | |
8482 | will return false. | |
8483 | ||
8484 | =cut | |
8485 | */ | |
8486 | ||
463ee0b2 | 8487 | int |
864dbfa3 | 8488 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 8489 | { |
68dc0745 | 8490 | if (!sv) |
8491 | return 0; | |
8492 | if (SvGMAGICAL(sv)) | |
8493 | mg_get(sv); | |
85e6fe83 LW |
8494 | if (!SvROK(sv)) |
8495 | return 0; | |
8496 | sv = (SV*)SvRV(sv); | |
8497 | if (!SvOBJECT(sv)) | |
8498 | return 0; | |
8499 | return 1; | |
8500 | } | |
8501 | ||
954c1994 GS |
8502 | /* |
8503 | =for apidoc sv_isa | |
8504 | ||
8505 | Returns a boolean indicating whether the SV is blessed into the specified | |
8506 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
8507 | an inheritance relationship. | |
8508 | ||
8509 | =cut | |
8510 | */ | |
8511 | ||
85e6fe83 | 8512 | int |
864dbfa3 | 8513 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 8514 | { |
bfcb3514 | 8515 | const char *hvname; |
68dc0745 | 8516 | if (!sv) |
8517 | return 0; | |
8518 | if (SvGMAGICAL(sv)) | |
8519 | mg_get(sv); | |
ed6116ce | 8520 | if (!SvROK(sv)) |
463ee0b2 | 8521 | return 0; |
ed6116ce LW |
8522 | sv = (SV*)SvRV(sv); |
8523 | if (!SvOBJECT(sv)) | |
463ee0b2 | 8524 | return 0; |
bfcb3514 NC |
8525 | hvname = HvNAME_get(SvSTASH(sv)); |
8526 | if (!hvname) | |
e27ad1f2 | 8527 | return 0; |
463ee0b2 | 8528 | |
bfcb3514 | 8529 | return strEQ(hvname, name); |
463ee0b2 LW |
8530 | } |
8531 | ||
954c1994 GS |
8532 | /* |
8533 | =for apidoc newSVrv | |
8534 | ||
8535 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
8536 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
8537 | be blessed in the specified package. The new SV is returned and its | |
8538 | reference count is 1. | |
8539 | ||
8540 | =cut | |
8541 | */ | |
8542 | ||
463ee0b2 | 8543 | SV* |
864dbfa3 | 8544 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 8545 | { |
463ee0b2 LW |
8546 | SV *sv; |
8547 | ||
4561caa4 | 8548 | new_SV(sv); |
51cf62d8 | 8549 | |
765f542d | 8550 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 8551 | SvAMAGIC_off(rv); |
51cf62d8 | 8552 | |
0199fce9 | 8553 | if (SvTYPE(rv) >= SVt_PVMG) { |
a3b680e6 | 8554 | const U32 refcnt = SvREFCNT(rv); |
0199fce9 JD |
8555 | SvREFCNT(rv) = 0; |
8556 | sv_clear(rv); | |
8557 | SvFLAGS(rv) = 0; | |
8558 | SvREFCNT(rv) = refcnt; | |
8559 | } | |
8560 | ||
51cf62d8 | 8561 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
8562 | sv_upgrade(rv, SVt_RV); |
8563 | else if (SvTYPE(rv) > SVt_RV) { | |
8bd4d4c5 | 8564 | SvPV_free(rv); |
0199fce9 JD |
8565 | SvCUR_set(rv, 0); |
8566 | SvLEN_set(rv, 0); | |
8567 | } | |
51cf62d8 | 8568 | |
0c34ef67 | 8569 | SvOK_off(rv); |
b162af07 | 8570 | SvRV_set(rv, sv); |
ed6116ce | 8571 | SvROK_on(rv); |
463ee0b2 | 8572 | |
a0d0e21e LW |
8573 | if (classname) { |
8574 | HV* stash = gv_stashpv(classname, TRUE); | |
8575 | (void)sv_bless(rv, stash); | |
8576 | } | |
8577 | return sv; | |
8578 | } | |
8579 | ||
954c1994 GS |
8580 | /* |
8581 | =for apidoc sv_setref_pv | |
8582 | ||
8583 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
8584 | argument will be upgraded to an RV. That RV will be modified to point to | |
8585 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
8586 | into the SV. The C<classname> argument indicates the package for the | |
8587 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8588 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8589 | |
8590 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
8591 | objects will become corrupted by the pointer copy process. | |
8592 | ||
8593 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
8594 | ||
8595 | =cut | |
8596 | */ | |
8597 | ||
a0d0e21e | 8598 | SV* |
864dbfa3 | 8599 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 8600 | { |
189b2af5 | 8601 | if (!pv) { |
3280af22 | 8602 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
8603 | SvSETMAGIC(rv); |
8604 | } | |
a0d0e21e | 8605 | else |
56431972 | 8606 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
8607 | return rv; |
8608 | } | |
8609 | ||
954c1994 GS |
8610 | /* |
8611 | =for apidoc sv_setref_iv | |
8612 | ||
8613 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
8614 | argument will be upgraded to an RV. That RV will be modified to point to | |
8615 | the new SV. The C<classname> argument indicates the package for the | |
8616 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8617 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8618 | |
8619 | =cut | |
8620 | */ | |
8621 | ||
a0d0e21e | 8622 | SV* |
864dbfa3 | 8623 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
8624 | { |
8625 | sv_setiv(newSVrv(rv,classname), iv); | |
8626 | return rv; | |
8627 | } | |
8628 | ||
954c1994 | 8629 | /* |
e1c57cef JH |
8630 | =for apidoc sv_setref_uv |
8631 | ||
8632 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
8633 | argument will be upgraded to an RV. That RV will be modified to point to | |
8634 | the new SV. The C<classname> argument indicates the package for the | |
8635 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8636 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
8637 | |
8638 | =cut | |
8639 | */ | |
8640 | ||
8641 | SV* | |
8642 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
8643 | { | |
8644 | sv_setuv(newSVrv(rv,classname), uv); | |
8645 | return rv; | |
8646 | } | |
8647 | ||
8648 | /* | |
954c1994 GS |
8649 | =for apidoc sv_setref_nv |
8650 | ||
8651 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
8652 | argument will be upgraded to an RV. That RV will be modified to point to | |
8653 | the new SV. The C<classname> argument indicates the package for the | |
8654 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8655 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8656 | |
8657 | =cut | |
8658 | */ | |
8659 | ||
a0d0e21e | 8660 | SV* |
65202027 | 8661 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
8662 | { |
8663 | sv_setnv(newSVrv(rv,classname), nv); | |
8664 | return rv; | |
8665 | } | |
463ee0b2 | 8666 | |
954c1994 GS |
8667 | /* |
8668 | =for apidoc sv_setref_pvn | |
8669 | ||
8670 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
8671 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
8672 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
8673 | argument indicates the package for the blessing. Set C<classname> to | |
7a5fa8a2 | 8674 | C<Nullch> to avoid the blessing. The new SV will have a reference count |
d34c2299 | 8675 | of 1, and the RV will be returned. |
954c1994 GS |
8676 | |
8677 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
8678 | ||
8679 | =cut | |
8680 | */ | |
8681 | ||
a0d0e21e | 8682 | SV* |
864dbfa3 | 8683 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n) |
a0d0e21e LW |
8684 | { |
8685 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
8686 | return rv; |
8687 | } | |
8688 | ||
954c1994 GS |
8689 | /* |
8690 | =for apidoc sv_bless | |
8691 | ||
8692 | Blesses an SV into a specified package. The SV must be an RV. The package | |
8693 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
8694 | of the SV is unaffected. | |
8695 | ||
8696 | =cut | |
8697 | */ | |
8698 | ||
a0d0e21e | 8699 | SV* |
864dbfa3 | 8700 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 8701 | { |
76e3520e | 8702 | SV *tmpRef; |
a0d0e21e | 8703 | if (!SvROK(sv)) |
cea2e8a9 | 8704 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
8705 | tmpRef = SvRV(sv); |
8706 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
8707 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 8708 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
8709 | if (SvOBJECT(tmpRef)) { |
8710 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8711 | --PL_sv_objcount; |
76e3520e | 8712 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 8713 | } |
a0d0e21e | 8714 | } |
76e3520e GS |
8715 | SvOBJECT_on(tmpRef); |
8716 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8717 | ++PL_sv_objcount; |
862a34c6 | 8718 | SvUPGRADE(tmpRef, SVt_PVMG); |
b162af07 | 8719 | SvSTASH_set(tmpRef, (HV*)SvREFCNT_inc(stash)); |
a0d0e21e | 8720 | |
2e3febc6 CS |
8721 | if (Gv_AMG(stash)) |
8722 | SvAMAGIC_on(sv); | |
8723 | else | |
8724 | SvAMAGIC_off(sv); | |
a0d0e21e | 8725 | |
1edbfb88 AB |
8726 | if(SvSMAGICAL(tmpRef)) |
8727 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
8728 | mg_set(tmpRef); | |
8729 | ||
8730 | ||
ecdeb87c | 8731 | |
a0d0e21e LW |
8732 | return sv; |
8733 | } | |
8734 | ||
645c22ef | 8735 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
8736 | */ |
8737 | ||
76e3520e | 8738 | STATIC void |
cea2e8a9 | 8739 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 8740 | { |
850fabdf GS |
8741 | void *xpvmg; |
8742 | ||
a0d0e21e LW |
8743 | assert(SvTYPE(sv) == SVt_PVGV); |
8744 | SvFAKE_off(sv); | |
8745 | if (GvGP(sv)) | |
1edc1566 | 8746 | gp_free((GV*)sv); |
e826b3c7 GS |
8747 | if (GvSTASH(sv)) { |
8748 | SvREFCNT_dec(GvSTASH(sv)); | |
8749 | GvSTASH(sv) = Nullhv; | |
8750 | } | |
14befaf4 | 8751 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8752 | Safefree(GvNAME(sv)); |
a5f75d66 | 8753 | GvMULTI_off(sv); |
850fabdf GS |
8754 | |
8755 | /* need to keep SvANY(sv) in the right arena */ | |
8756 | xpvmg = new_XPVMG(); | |
8757 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8758 | del_XPVGV(SvANY(sv)); | |
8759 | SvANY(sv) = xpvmg; | |
8760 | ||
a0d0e21e LW |
8761 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8762 | SvFLAGS(sv) |= SVt_PVMG; | |
8763 | } | |
8764 | ||
954c1994 | 8765 | /* |
840a7b70 | 8766 | =for apidoc sv_unref_flags |
954c1994 GS |
8767 | |
8768 | Unsets the RV status of the SV, and decrements the reference count of | |
8769 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8770 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8771 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8772 | (otherwise the decrementing is conditional on the reference count being | |
8773 | different from one or the reference being a readonly SV). | |
7889fe52 | 8774 | See C<SvROK_off>. |
954c1994 GS |
8775 | |
8776 | =cut | |
8777 | */ | |
8778 | ||
ed6116ce | 8779 | void |
840a7b70 | 8780 | Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags) |
ed6116ce | 8781 | { |
a0d0e21e | 8782 | SV* rv = SvRV(sv); |
810b8aa5 GS |
8783 | |
8784 | if (SvWEAKREF(sv)) { | |
8785 | sv_del_backref(sv); | |
8786 | SvWEAKREF_off(sv); | |
b162af07 | 8787 | SvRV_set(sv, NULL); |
810b8aa5 GS |
8788 | return; |
8789 | } | |
b162af07 | 8790 | SvRV_set(sv, NULL); |
ed6116ce | 8791 | SvROK_off(sv); |
04ca4930 NC |
8792 | /* You can't have a || SvREADONLY(rv) here, as $a = $$a, where $a was |
8793 | assigned to as BEGIN {$a = \"Foo"} will fail. */ | |
8794 | if (SvREFCNT(rv) != 1 || (flags & SV_IMMEDIATE_UNREF)) | |
4633a7c4 | 8795 | SvREFCNT_dec(rv); |
840a7b70 | 8796 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
4633a7c4 | 8797 | sv_2mortal(rv); /* Schedule for freeing later */ |
ed6116ce | 8798 | } |
8990e307 | 8799 | |
840a7b70 IZ |
8800 | /* |
8801 | =for apidoc sv_unref | |
8802 | ||
8803 | Unsets the RV status of the SV, and decrements the reference count of | |
8804 | whatever was being referenced by the RV. This can almost be thought of | |
8805 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
7889fe52 | 8806 | being zero. See C<SvROK_off>. |
840a7b70 IZ |
8807 | |
8808 | =cut | |
8809 | */ | |
8810 | ||
8811 | void | |
8812 | Perl_sv_unref(pTHX_ SV *sv) | |
8813 | { | |
8814 | sv_unref_flags(sv, 0); | |
8815 | } | |
8816 | ||
645c22ef DM |
8817 | /* |
8818 | =for apidoc sv_taint | |
8819 | ||
8820 | Taint an SV. Use C<SvTAINTED_on> instead. | |
8821 | =cut | |
8822 | */ | |
8823 | ||
bbce6d69 | 8824 | void |
864dbfa3 | 8825 | Perl_sv_taint(pTHX_ SV *sv) |
bbce6d69 | 8826 | { |
14befaf4 | 8827 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); |
bbce6d69 | 8828 | } |
8829 | ||
645c22ef DM |
8830 | /* |
8831 | =for apidoc sv_untaint | |
8832 | ||
8833 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8834 | =cut | |
8835 | */ | |
8836 | ||
bbce6d69 | 8837 | void |
864dbfa3 | 8838 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8839 | { |
13f57bf8 | 8840 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8841 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8842 | if (mg) |
565764a8 | 8843 | mg->mg_len &= ~1; |
36477c24 | 8844 | } |
bbce6d69 | 8845 | } |
8846 | ||
645c22ef DM |
8847 | /* |
8848 | =for apidoc sv_tainted | |
8849 | ||
8850 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8851 | =cut | |
8852 | */ | |
8853 | ||
bbce6d69 | 8854 | bool |
864dbfa3 | 8855 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8856 | { |
13f57bf8 | 8857 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8858 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
155aba94 | 8859 | if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv))) |
36477c24 | 8860 | return TRUE; |
8861 | } | |
8862 | return FALSE; | |
bbce6d69 | 8863 | } |
8864 | ||
09540bc3 JH |
8865 | /* |
8866 | =for apidoc sv_setpviv | |
8867 | ||
8868 | Copies an integer into the given SV, also updating its string value. | |
8869 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8870 | ||
8871 | =cut | |
8872 | */ | |
8873 | ||
8874 | void | |
8875 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8876 | { | |
8877 | char buf[TYPE_CHARS(UV)]; | |
8878 | char *ebuf; | |
8879 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8880 | ||
8881 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8882 | } | |
8883 | ||
8884 | /* | |
8885 | =for apidoc sv_setpviv_mg | |
8886 | ||
8887 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8888 | ||
8889 | =cut | |
8890 | */ | |
8891 | ||
8892 | void | |
8893 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8894 | { | |
8895 | char buf[TYPE_CHARS(UV)]; | |
8896 | char *ebuf; | |
8897 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8898 | ||
8899 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8900 | SvSETMAGIC(sv); | |
8901 | } | |
8902 | ||
cea2e8a9 | 8903 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8904 | |
8905 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8906 | * version of the main function, (which may itself be aliased to us). | |
8907 | * Don't access this version directly. | |
8908 | */ | |
8909 | ||
cea2e8a9 GS |
8910 | void |
8911 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8912 | { | |
8913 | dTHX; | |
8914 | va_list args; | |
8915 | va_start(args, pat); | |
c5be433b | 8916 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8917 | va_end(args); |
8918 | } | |
8919 | ||
645c22ef DM |
8920 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8921 | * version of the main function, (which may itself be aliased to us). | |
8922 | * Don't access this version directly. | |
8923 | */ | |
cea2e8a9 GS |
8924 | |
8925 | void | |
8926 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8927 | { | |
8928 | dTHX; | |
8929 | va_list args; | |
8930 | va_start(args, pat); | |
c5be433b | 8931 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8932 | va_end(args); |
cea2e8a9 GS |
8933 | } |
8934 | #endif | |
8935 | ||
954c1994 GS |
8936 | /* |
8937 | =for apidoc sv_setpvf | |
8938 | ||
bffc3d17 SH |
8939 | Works like C<sv_catpvf> but copies the text into the SV instead of |
8940 | appending it. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
954c1994 GS |
8941 | |
8942 | =cut | |
8943 | */ | |
8944 | ||
46fc3d4c | 8945 | void |
864dbfa3 | 8946 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8947 | { |
8948 | va_list args; | |
46fc3d4c | 8949 | va_start(args, pat); |
c5be433b | 8950 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8951 | va_end(args); |
8952 | } | |
8953 | ||
bffc3d17 SH |
8954 | /* |
8955 | =for apidoc sv_vsetpvf | |
8956 | ||
8957 | Works like C<sv_vcatpvf> but copies the text into the SV instead of | |
8958 | appending it. Does not handle 'set' magic. See C<sv_vsetpvf_mg>. | |
8959 | ||
8960 | Usually used via its frontend C<sv_setpvf>. | |
8961 | ||
8962 | =cut | |
8963 | */ | |
645c22ef | 8964 | |
c5be433b GS |
8965 | void |
8966 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8967 | { | |
8968 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8969 | } | |
ef50df4b | 8970 | |
954c1994 GS |
8971 | /* |
8972 | =for apidoc sv_setpvf_mg | |
8973 | ||
8974 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8975 | ||
8976 | =cut | |
8977 | */ | |
8978 | ||
ef50df4b | 8979 | void |
864dbfa3 | 8980 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8981 | { |
8982 | va_list args; | |
ef50df4b | 8983 | va_start(args, pat); |
c5be433b | 8984 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8985 | va_end(args); |
c5be433b GS |
8986 | } |
8987 | ||
bffc3d17 SH |
8988 | /* |
8989 | =for apidoc sv_vsetpvf_mg | |
8990 | ||
8991 | Like C<sv_vsetpvf>, but also handles 'set' magic. | |
8992 | ||
8993 | Usually used via its frontend C<sv_setpvf_mg>. | |
8994 | ||
8995 | =cut | |
8996 | */ | |
645c22ef | 8997 | |
c5be433b GS |
8998 | void |
8999 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
9000 | { | |
9001 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
9002 | SvSETMAGIC(sv); |
9003 | } | |
9004 | ||
cea2e8a9 | 9005 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
9006 | |
9007 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
9008 | * version of the main function, (which may itself be aliased to us). | |
9009 | * Don't access this version directly. | |
9010 | */ | |
9011 | ||
cea2e8a9 GS |
9012 | void |
9013 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
9014 | { | |
9015 | dTHX; | |
9016 | va_list args; | |
9017 | va_start(args, pat); | |
c5be433b | 9018 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
9019 | va_end(args); |
9020 | } | |
9021 | ||
645c22ef DM |
9022 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
9023 | * version of the main function, (which may itself be aliased to us). | |
9024 | * Don't access this version directly. | |
9025 | */ | |
9026 | ||
cea2e8a9 GS |
9027 | void |
9028 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
9029 | { | |
9030 | dTHX; | |
9031 | va_list args; | |
9032 | va_start(args, pat); | |
c5be433b | 9033 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 9034 | va_end(args); |
cea2e8a9 GS |
9035 | } |
9036 | #endif | |
9037 | ||
954c1994 GS |
9038 | /* |
9039 | =for apidoc sv_catpvf | |
9040 | ||
d5ce4a7c GA |
9041 | Processes its arguments like C<sprintf> and appends the formatted |
9042 | output to an SV. If the appended data contains "wide" characters | |
9043 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
9044 | and characters >255 formatted with %c), the original SV might get | |
bffc3d17 | 9045 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. See |
cdd94ca7 NC |
9046 | C<sv_catpvf_mg>. If the original SV was UTF-8, the pattern should be |
9047 | valid UTF-8; if the original SV was bytes, the pattern should be too. | |
954c1994 | 9048 | |
d5ce4a7c | 9049 | =cut */ |
954c1994 | 9050 | |
46fc3d4c | 9051 | void |
864dbfa3 | 9052 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 9053 | { |
9054 | va_list args; | |
46fc3d4c | 9055 | va_start(args, pat); |
c5be433b | 9056 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 9057 | va_end(args); |
9058 | } | |
9059 | ||
bffc3d17 SH |
9060 | /* |
9061 | =for apidoc sv_vcatpvf | |
9062 | ||
9063 | Processes its arguments like C<vsprintf> and appends the formatted output | |
9064 | to an SV. Does not handle 'set' magic. See C<sv_vcatpvf_mg>. | |
9065 | ||
9066 | Usually used via its frontend C<sv_catpvf>. | |
9067 | ||
9068 | =cut | |
9069 | */ | |
645c22ef | 9070 | |
ef50df4b | 9071 | void |
c5be433b GS |
9072 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
9073 | { | |
9074 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
9075 | } | |
9076 | ||
954c1994 GS |
9077 | /* |
9078 | =for apidoc sv_catpvf_mg | |
9079 | ||
9080 | Like C<sv_catpvf>, but also handles 'set' magic. | |
9081 | ||
9082 | =cut | |
9083 | */ | |
9084 | ||
c5be433b | 9085 | void |
864dbfa3 | 9086 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
9087 | { |
9088 | va_list args; | |
ef50df4b | 9089 | va_start(args, pat); |
c5be433b | 9090 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 9091 | va_end(args); |
c5be433b GS |
9092 | } |
9093 | ||
bffc3d17 SH |
9094 | /* |
9095 | =for apidoc sv_vcatpvf_mg | |
9096 | ||
9097 | Like C<sv_vcatpvf>, but also handles 'set' magic. | |
9098 | ||
9099 | Usually used via its frontend C<sv_catpvf_mg>. | |
9100 | ||
9101 | =cut | |
9102 | */ | |
645c22ef | 9103 | |
c5be433b GS |
9104 | void |
9105 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
9106 | { | |
9107 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
9108 | SvSETMAGIC(sv); |
9109 | } | |
9110 | ||
954c1994 GS |
9111 | /* |
9112 | =for apidoc sv_vsetpvfn | |
9113 | ||
bffc3d17 | 9114 | Works like C<sv_vcatpvfn> but copies the text into the SV instead of |
954c1994 GS |
9115 | appending it. |
9116 | ||
bffc3d17 | 9117 | Usually used via one of its frontends C<sv_vsetpvf> and C<sv_vsetpvf_mg>. |
645c22ef | 9118 | |
954c1994 GS |
9119 | =cut |
9120 | */ | |
9121 | ||
46fc3d4c | 9122 | void |
7d5ea4e7 | 9123 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9124 | { |
9125 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 9126 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 9127 | } |
9128 | ||
645c22ef DM |
9129 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
9130 | ||
2d00ba3b | 9131 | STATIC I32 |
9dd79c3f | 9132 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
9133 | { |
9134 | I32 var = 0; | |
9135 | switch (**pattern) { | |
9136 | case '1': case '2': case '3': | |
9137 | case '4': case '5': case '6': | |
9138 | case '7': case '8': case '9': | |
9139 | while (isDIGIT(**pattern)) | |
9140 | var = var * 10 + (*(*pattern)++ - '0'); | |
9141 | } | |
9142 | return var; | |
9143 | } | |
9dd79c3f | 9144 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 9145 | |
4151a5fe IZ |
9146 | static char * |
9147 | F0convert(NV nv, char *endbuf, STRLEN *len) | |
9148 | { | |
a3b680e6 | 9149 | const int neg = nv < 0; |
4151a5fe | 9150 | UV uv; |
4151a5fe IZ |
9151 | |
9152 | if (neg) | |
9153 | nv = -nv; | |
9154 | if (nv < UV_MAX) { | |
b464bac0 | 9155 | char *p = endbuf; |
4151a5fe | 9156 | nv += 0.5; |
028f8eaa | 9157 | uv = (UV)nv; |
4151a5fe IZ |
9158 | if (uv & 1 && uv == nv) |
9159 | uv--; /* Round to even */ | |
9160 | do { | |
a3b680e6 | 9161 | const unsigned dig = uv % 10; |
4151a5fe IZ |
9162 | *--p = '0' + dig; |
9163 | } while (uv /= 10); | |
9164 | if (neg) | |
9165 | *--p = '-'; | |
9166 | *len = endbuf - p; | |
9167 | return p; | |
9168 | } | |
9169 | return Nullch; | |
9170 | } | |
9171 | ||
9172 | ||
954c1994 GS |
9173 | /* |
9174 | =for apidoc sv_vcatpvfn | |
9175 | ||
9176 | Processes its arguments like C<vsprintf> and appends the formatted output | |
9177 | to an SV. Uses an array of SVs if the C style variable argument list is | |
9178 | missing (NULL). When running with taint checks enabled, indicates via | |
9179 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
9180 | locales). | |
9181 | ||
bffc3d17 | 9182 | Usually used via one of its frontends C<sv_vcatpvf> and C<sv_vcatpvf_mg>. |
645c22ef | 9183 | |
954c1994 GS |
9184 | =cut |
9185 | */ | |
9186 | ||
1ef29b0e RGS |
9187 | /* XXX maybe_tainted is never assigned to, so the doc above is lying. */ |
9188 | ||
46fc3d4c | 9189 | void |
7d5ea4e7 | 9190 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 9191 | { |
9192 | char *p; | |
9193 | char *q; | |
a3b680e6 | 9194 | const char *patend; |
fc36a67e | 9195 | STRLEN origlen; |
46fc3d4c | 9196 | I32 svix = 0; |
27da23d5 | 9197 | static const char nullstr[] = "(null)"; |
9c5ffd7c | 9198 | SV *argsv = Nullsv; |
b464bac0 AL |
9199 | bool has_utf8 = DO_UTF8(sv); /* has the result utf8? */ |
9200 | const bool pat_utf8 = has_utf8; /* the pattern is in utf8? */ | |
db79b45b | 9201 | SV *nsv = Nullsv; |
4151a5fe IZ |
9202 | /* Times 4: a decimal digit takes more than 3 binary digits. |
9203 | * NV_DIG: mantissa takes than many decimal digits. | |
9204 | * Plus 32: Playing safe. */ | |
9205 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
9206 | /* large enough for "%#.#f" --chip */ | |
9207 | /* what about long double NVs? --jhi */ | |
db79b45b | 9208 | |
46fc3d4c | 9209 | /* no matter what, this is a string now */ |
fc36a67e | 9210 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 9211 | |
0dbb1585 | 9212 | /* special-case "", "%s", and "%-p" (SVf) */ |
46fc3d4c | 9213 | if (patlen == 0) |
9214 | return; | |
0dbb1585 | 9215 | if (patlen == 2 && pat[0] == '%' && pat[1] == 's') { |
c635e13b | 9216 | if (args) { |
73d840c0 | 9217 | const char *s = va_arg(*args, char*); |
c635e13b | 9218 | sv_catpv(sv, s ? s : nullstr); |
9219 | } | |
7e2040f0 | 9220 | else if (svix < svmax) { |
fc36a67e | 9221 | sv_catsv(sv, *svargs); |
7e2040f0 GS |
9222 | if (DO_UTF8(*svargs)) |
9223 | SvUTF8_on(sv); | |
9224 | } | |
fc36a67e | 9225 | return; |
0dbb1585 AL |
9226 | } |
9227 | if (patlen == 3 && pat[0] == '%' && | |
9228 | pat[1] == '-' && pat[2] == 'p') { | |
fc36a67e | 9229 | if (args) { |
7e2040f0 GS |
9230 | argsv = va_arg(*args, SV*); |
9231 | sv_catsv(sv, argsv); | |
9232 | if (DO_UTF8(argsv)) | |
9233 | SvUTF8_on(sv); | |
fc36a67e | 9234 | return; |
9235 | } | |
46fc3d4c | 9236 | } |
9237 | ||
1d917b39 | 9238 | #ifndef USE_LONG_DOUBLE |
4151a5fe IZ |
9239 | /* special-case "%.<number>[gf]" */ |
9240 | if ( patlen <= 5 && pat[0] == '%' && pat[1] == '.' | |
9241 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { | |
9242 | unsigned digits = 0; | |
9243 | const char *pp; | |
9244 | ||
9245 | pp = pat + 2; | |
9246 | while (*pp >= '0' && *pp <= '9') | |
9247 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 9248 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
9249 | NV nv; |
9250 | ||
9251 | if (args) | |
9252 | nv = (NV)va_arg(*args, double); | |
9253 | else if (svix < svmax) | |
9254 | nv = SvNV(*svargs); | |
9255 | else | |
9256 | return; | |
9257 | if (*pp == 'g') { | |
2873255c NC |
9258 | /* Add check for digits != 0 because it seems that some |
9259 | gconverts are buggy in this case, and we don't yet have | |
9260 | a Configure test for this. */ | |
9261 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
9262 | /* 0, point, slack */ | |
2e59c212 | 9263 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
9264 | sv_catpv(sv, ebuf); |
9265 | if (*ebuf) /* May return an empty string for digits==0 */ | |
9266 | return; | |
9267 | } | |
9268 | } else if (!digits) { | |
9269 | STRLEN l; | |
9270 | ||
9271 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
9272 | sv_catpvn(sv, p, l); | |
9273 | return; | |
9274 | } | |
9275 | } | |
9276 | } | |
9277 | } | |
1d917b39 | 9278 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 9279 | |
2cf2cfc6 | 9280 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 9281 | has_utf8 = TRUE; |
2cf2cfc6 | 9282 | |
46fc3d4c | 9283 | patend = (char*)pat + patlen; |
9284 | for (p = (char*)pat; p < patend; p = q) { | |
9285 | bool alt = FALSE; | |
9286 | bool left = FALSE; | |
b22c7a20 | 9287 | bool vectorize = FALSE; |
211dfcf1 | 9288 | bool vectorarg = FALSE; |
2cf2cfc6 | 9289 | bool vec_utf8 = FALSE; |
46fc3d4c | 9290 | char fill = ' '; |
9291 | char plus = 0; | |
9292 | char intsize = 0; | |
9293 | STRLEN width = 0; | |
fc36a67e | 9294 | STRLEN zeros = 0; |
46fc3d4c | 9295 | bool has_precis = FALSE; |
9296 | STRLEN precis = 0; | |
58e33a90 | 9297 | I32 osvix = svix; |
2cf2cfc6 | 9298 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
9299 | #ifdef HAS_LDBL_SPRINTF_BUG |
9300 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 9301 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
9302 | bool fix_ldbl_sprintf_bug = FALSE; |
9303 | #endif | |
205f51d8 | 9304 | |
46fc3d4c | 9305 | char esignbuf[4]; |
89ebb4a3 | 9306 | U8 utf8buf[UTF8_MAXBYTES+1]; |
46fc3d4c | 9307 | STRLEN esignlen = 0; |
9308 | ||
4d84ee25 | 9309 | const char *eptr = Nullch; |
fc36a67e | 9310 | STRLEN elen = 0; |
81f715da | 9311 | SV *vecsv = Nullsv; |
a05b299f | 9312 | U8 *vecstr = Null(U8*); |
b22c7a20 | 9313 | STRLEN veclen = 0; |
934abaf1 | 9314 | char c = 0; |
46fc3d4c | 9315 | int i; |
9c5ffd7c | 9316 | unsigned base = 0; |
8c8eb53c RB |
9317 | IV iv = 0; |
9318 | UV uv = 0; | |
9e5b023a JH |
9319 | /* we need a long double target in case HAS_LONG_DOUBLE but |
9320 | not USE_LONG_DOUBLE | |
9321 | */ | |
35fff930 | 9322 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
9323 | long double nv; |
9324 | #else | |
65202027 | 9325 | NV nv; |
9e5b023a | 9326 | #endif |
46fc3d4c | 9327 | STRLEN have; |
9328 | STRLEN need; | |
9329 | STRLEN gap; | |
e1ec3a88 | 9330 | const char *dotstr = "."; |
b22c7a20 | 9331 | STRLEN dotstrlen = 1; |
211dfcf1 | 9332 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 9333 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
9334 | I32 epix = 0; /* explicit precision index */ |
9335 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 9336 | bool asterisk = FALSE; |
46fc3d4c | 9337 | |
211dfcf1 | 9338 | /* echo everything up to the next format specification */ |
46fc3d4c | 9339 | for (q = p; q < patend && *q != '%'; ++q) ; |
9340 | if (q > p) { | |
db79b45b JH |
9341 | if (has_utf8 && !pat_utf8) |
9342 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
9343 | else | |
9344 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 9345 | p = q; |
9346 | } | |
9347 | if (q++ >= patend) | |
9348 | break; | |
9349 | ||
211dfcf1 HS |
9350 | /* |
9351 | We allow format specification elements in this order: | |
9352 | \d+\$ explicit format parameter index | |
9353 | [-+ 0#]+ flags | |
a472f209 | 9354 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 9355 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
9356 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
9357 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
9358 | [hlqLV] size | |
9359 | [%bcdefginopsux_DFOUX] format (mandatory) | |
9360 | */ | |
9361 | if (EXPECT_NUMBER(q, width)) { | |
9362 | if (*q == '$') { | |
9363 | ++q; | |
9364 | efix = width; | |
9365 | } else { | |
9366 | goto gotwidth; | |
9367 | } | |
9368 | } | |
9369 | ||
fc36a67e | 9370 | /* FLAGS */ |
9371 | ||
46fc3d4c | 9372 | while (*q) { |
9373 | switch (*q) { | |
9374 | case ' ': | |
9375 | case '+': | |
9376 | plus = *q++; | |
9377 | continue; | |
9378 | ||
9379 | case '-': | |
9380 | left = TRUE; | |
9381 | q++; | |
9382 | continue; | |
9383 | ||
9384 | case '0': | |
9385 | fill = *q++; | |
9386 | continue; | |
9387 | ||
9388 | case '#': | |
9389 | alt = TRUE; | |
9390 | q++; | |
9391 | continue; | |
9392 | ||
fc36a67e | 9393 | default: |
9394 | break; | |
9395 | } | |
9396 | break; | |
9397 | } | |
46fc3d4c | 9398 | |
211dfcf1 | 9399 | tryasterisk: |
eb3fce90 | 9400 | if (*q == '*') { |
211dfcf1 HS |
9401 | q++; |
9402 | if (EXPECT_NUMBER(q, ewix)) | |
9403 | if (*q++ != '$') | |
9404 | goto unknown; | |
eb3fce90 | 9405 | asterisk = TRUE; |
211dfcf1 HS |
9406 | } |
9407 | if (*q == 'v') { | |
eb3fce90 | 9408 | q++; |
211dfcf1 HS |
9409 | if (vectorize) |
9410 | goto unknown; | |
9cbac4c7 | 9411 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
9412 | evix = ewix; |
9413 | ewix = 0; | |
9414 | asterisk = FALSE; | |
9415 | } | |
9416 | vectorize = TRUE; | |
9417 | goto tryasterisk; | |
eb3fce90 JH |
9418 | } |
9419 | ||
211dfcf1 | 9420 | if (!asterisk) |
7a5fa8a2 | 9421 | if( *q == '0' ) |
f3583277 | 9422 | fill = *q++; |
211dfcf1 HS |
9423 | EXPECT_NUMBER(q, width); |
9424 | ||
9425 | if (vectorize) { | |
9426 | if (vectorarg) { | |
9427 | if (args) | |
9428 | vecsv = va_arg(*args, SV*); | |
9429 | else | |
9430 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
3a7a539e | 9431 | svargs[evix ? evix-1 : svix++] : &PL_sv_undef; |
4459522c | 9432 | dotstr = SvPVx(vecsv, dotstrlen); |
211dfcf1 | 9433 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 9434 | is_utf8 = TRUE; |
211dfcf1 HS |
9435 | } |
9436 | if (args) { | |
9437 | vecsv = va_arg(*args, SV*); | |
9438 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9439 | vec_utf8 = DO_UTF8(vecsv); |
eb3fce90 | 9440 | } |
211dfcf1 HS |
9441 | else if (efix ? efix <= svmax : svix < svmax) { |
9442 | vecsv = svargs[efix ? efix-1 : svix++]; | |
9443 | vecstr = (U8*)SvPVx(vecsv,veclen); | |
2cf2cfc6 | 9444 | vec_utf8 = DO_UTF8(vecsv); |
d7aa5382 | 9445 | /* if this is a version object, we need to return the |
3f7c398e | 9446 | * stringified representation (which the SvPVX_const has |
d7aa5382 JP |
9447 | * already done for us), but not vectorize the args |
9448 | */ | |
9449 | if ( *q == 'd' && sv_derived_from(vecsv,"version") ) | |
9450 | { | |
9451 | q++; /* skip past the rest of the %vd format */ | |
da6068d9 | 9452 | eptr = (char *) vecstr; |
d7aa5382 JP |
9453 | elen = strlen(eptr); |
9454 | vectorize=FALSE; | |
9455 | goto string; | |
9456 | } | |
211dfcf1 HS |
9457 | } |
9458 | else { | |
9459 | vecstr = (U8*)""; | |
9460 | veclen = 0; | |
9461 | } | |
eb3fce90 | 9462 | } |
fc36a67e | 9463 | |
eb3fce90 | 9464 | if (asterisk) { |
fc36a67e | 9465 | if (args) |
9466 | i = va_arg(*args, int); | |
9467 | else | |
eb3fce90 JH |
9468 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
9469 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9470 | left |= (i < 0); |
9471 | width = (i < 0) ? -i : i; | |
fc36a67e | 9472 | } |
211dfcf1 | 9473 | gotwidth: |
fc36a67e | 9474 | |
9475 | /* PRECISION */ | |
46fc3d4c | 9476 | |
fc36a67e | 9477 | if (*q == '.') { |
9478 | q++; | |
9479 | if (*q == '*') { | |
211dfcf1 | 9480 | q++; |
7b8dd722 HS |
9481 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
9482 | goto unknown; | |
9483 | /* XXX: todo, support specified precision parameter */ | |
9484 | if (epix) | |
211dfcf1 | 9485 | goto unknown; |
46fc3d4c | 9486 | if (args) |
9487 | i = va_arg(*args, int); | |
9488 | else | |
eb3fce90 JH |
9489 | i = (ewix ? ewix <= svmax : svix < svmax) |
9490 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9491 | precis = (i < 0) ? 0 : i; |
fc36a67e | 9492 | } |
9493 | else { | |
9494 | precis = 0; | |
9495 | while (isDIGIT(*q)) | |
9496 | precis = precis * 10 + (*q++ - '0'); | |
9497 | } | |
9498 | has_precis = TRUE; | |
9499 | } | |
46fc3d4c | 9500 | |
fc36a67e | 9501 | /* SIZE */ |
46fc3d4c | 9502 | |
fc36a67e | 9503 | switch (*q) { |
c623ac67 GS |
9504 | #ifdef WIN32 |
9505 | case 'I': /* Ix, I32x, and I64x */ | |
9506 | # ifdef WIN64 | |
9507 | if (q[1] == '6' && q[2] == '4') { | |
9508 | q += 3; | |
9509 | intsize = 'q'; | |
9510 | break; | |
9511 | } | |
9512 | # endif | |
9513 | if (q[1] == '3' && q[2] == '2') { | |
9514 | q += 3; | |
9515 | break; | |
9516 | } | |
9517 | # ifdef WIN64 | |
9518 | intsize = 'q'; | |
9519 | # endif | |
9520 | q++; | |
9521 | break; | |
9522 | #endif | |
9e5b023a | 9523 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 9524 | case 'L': /* Ld */ |
e5c81feb | 9525 | /* FALL THROUGH */ |
e5c81feb | 9526 | #ifdef HAS_QUAD |
6f9bb7fd | 9527 | case 'q': /* qd */ |
9e5b023a | 9528 | #endif |
6f9bb7fd GS |
9529 | intsize = 'q'; |
9530 | q++; | |
9531 | break; | |
9532 | #endif | |
fc36a67e | 9533 | case 'l': |
9e5b023a | 9534 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 9535 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 9536 | intsize = 'q'; |
9537 | q += 2; | |
46fc3d4c | 9538 | break; |
cf2093f6 | 9539 | } |
fc36a67e | 9540 | #endif |
6f9bb7fd | 9541 | /* FALL THROUGH */ |
fc36a67e | 9542 | case 'h': |
cf2093f6 | 9543 | /* FALL THROUGH */ |
fc36a67e | 9544 | case 'V': |
9545 | intsize = *q++; | |
46fc3d4c | 9546 | break; |
9547 | } | |
9548 | ||
fc36a67e | 9549 | /* CONVERSION */ |
9550 | ||
211dfcf1 HS |
9551 | if (*q == '%') { |
9552 | eptr = q++; | |
9553 | elen = 1; | |
9554 | goto string; | |
9555 | } | |
9556 | ||
be75b157 HS |
9557 | if (vectorize) |
9558 | argsv = vecsv; | |
9559 | else if (!args) | |
211dfcf1 HS |
9560 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
9561 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
9562 | ||
46fc3d4c | 9563 | switch (c = *q++) { |
9564 | ||
9565 | /* STRINGS */ | |
9566 | ||
46fc3d4c | 9567 | case 'c': |
be75b157 | 9568 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
9569 | if ((uv > 255 || |
9570 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 9571 | && !IN_BYTES) { |
dfe13c55 | 9572 | eptr = (char*)utf8buf; |
9041c2e3 | 9573 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 9574 | is_utf8 = TRUE; |
7e2040f0 GS |
9575 | } |
9576 | else { | |
9577 | c = (char)uv; | |
9578 | eptr = &c; | |
9579 | elen = 1; | |
a0ed51b3 | 9580 | } |
46fc3d4c | 9581 | goto string; |
9582 | ||
46fc3d4c | 9583 | case 's': |
be75b157 | 9584 | if (args && !vectorize) { |
fc36a67e | 9585 | eptr = va_arg(*args, char*); |
c635e13b | 9586 | if (eptr) |
1d7c1841 GS |
9587 | #ifdef MACOS_TRADITIONAL |
9588 | /* On MacOS, %#s format is used for Pascal strings */ | |
9589 | if (alt) | |
9590 | elen = *eptr++; | |
9591 | else | |
9592 | #endif | |
c635e13b | 9593 | elen = strlen(eptr); |
9594 | else { | |
27da23d5 | 9595 | eptr = (char *)nullstr; |
c635e13b | 9596 | elen = sizeof nullstr - 1; |
9597 | } | |
46fc3d4c | 9598 | } |
211dfcf1 | 9599 | else { |
4d84ee25 | 9600 | eptr = SvPVx_const(argsv, elen); |
7e2040f0 | 9601 | if (DO_UTF8(argsv)) { |
a0ed51b3 LW |
9602 | if (has_precis && precis < elen) { |
9603 | I32 p = precis; | |
7e2040f0 | 9604 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
9605 | precis = p; |
9606 | } | |
9607 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 9608 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 9609 | } |
2cf2cfc6 | 9610 | is_utf8 = TRUE; |
a0ed51b3 LW |
9611 | } |
9612 | } | |
fc36a67e | 9613 | |
46fc3d4c | 9614 | string: |
b22c7a20 | 9615 | vectorize = FALSE; |
46fc3d4c | 9616 | if (has_precis && elen > precis) |
9617 | elen = precis; | |
9618 | break; | |
9619 | ||
9620 | /* INTEGERS */ | |
9621 | ||
fc36a67e | 9622 | case 'p': |
0dbb1585 | 9623 | if (left && args) { /* SVf */ |
5df617be | 9624 | left = FALSE; |
0dbb1585 AL |
9625 | if (width) { |
9626 | precis = width; | |
9627 | has_precis = TRUE; | |
9628 | width = 0; | |
9629 | } | |
9630 | if (vectorize) | |
9631 | goto unknown; | |
9632 | argsv = va_arg(*args, SV*); | |
4d84ee25 | 9633 | eptr = SvPVx_const(argsv, elen); |
0dbb1585 AL |
9634 | if (DO_UTF8(argsv)) |
9635 | is_utf8 = TRUE; | |
9636 | goto string; | |
5df617be | 9637 | } |
be75b157 | 9638 | if (alt || vectorize) |
c2e66d9e | 9639 | goto unknown; |
211dfcf1 | 9640 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 9641 | base = 16; |
9642 | goto integer; | |
9643 | ||
46fc3d4c | 9644 | case 'D': |
29fe7a80 | 9645 | #ifdef IV_IS_QUAD |
22f3ae8c | 9646 | intsize = 'q'; |
29fe7a80 | 9647 | #else |
46fc3d4c | 9648 | intsize = 'l'; |
29fe7a80 | 9649 | #endif |
46fc3d4c | 9650 | /* FALL THROUGH */ |
9651 | case 'd': | |
9652 | case 'i': | |
b22c7a20 | 9653 | if (vectorize) { |
ba210ebe | 9654 | STRLEN ulen; |
211dfcf1 HS |
9655 | if (!veclen) |
9656 | continue; | |
2cf2cfc6 A |
9657 | if (vec_utf8) |
9658 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9659 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9660 | else { |
e83d50c9 | 9661 | uv = *vecstr; |
b22c7a20 GS |
9662 | ulen = 1; |
9663 | } | |
9664 | vecstr += ulen; | |
9665 | veclen -= ulen; | |
e83d50c9 JP |
9666 | if (plus) |
9667 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
9668 | } |
9669 | else if (args) { | |
46fc3d4c | 9670 | switch (intsize) { |
9671 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 9672 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 9673 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 9674 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
9675 | #ifdef HAS_QUAD |
9676 | case 'q': iv = va_arg(*args, Quad_t); break; | |
9677 | #endif | |
46fc3d4c | 9678 | } |
9679 | } | |
9680 | else { | |
b10c0dba | 9681 | IV tiv = SvIVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9682 | switch (intsize) { |
b10c0dba MHM |
9683 | case 'h': iv = (short)tiv; break; |
9684 | case 'l': iv = (long)tiv; break; | |
9685 | case 'V': | |
9686 | default: iv = tiv; break; | |
cf2093f6 | 9687 | #ifdef HAS_QUAD |
b10c0dba | 9688 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 9689 | #endif |
46fc3d4c | 9690 | } |
9691 | } | |
e83d50c9 JP |
9692 | if ( !vectorize ) /* we already set uv above */ |
9693 | { | |
9694 | if (iv >= 0) { | |
9695 | uv = iv; | |
9696 | if (plus) | |
9697 | esignbuf[esignlen++] = plus; | |
9698 | } | |
9699 | else { | |
9700 | uv = -iv; | |
9701 | esignbuf[esignlen++] = '-'; | |
9702 | } | |
46fc3d4c | 9703 | } |
9704 | base = 10; | |
9705 | goto integer; | |
9706 | ||
fc36a67e | 9707 | case 'U': |
29fe7a80 | 9708 | #ifdef IV_IS_QUAD |
22f3ae8c | 9709 | intsize = 'q'; |
29fe7a80 | 9710 | #else |
fc36a67e | 9711 | intsize = 'l'; |
29fe7a80 | 9712 | #endif |
fc36a67e | 9713 | /* FALL THROUGH */ |
9714 | case 'u': | |
9715 | base = 10; | |
9716 | goto uns_integer; | |
9717 | ||
4f19785b WSI |
9718 | case 'b': |
9719 | base = 2; | |
9720 | goto uns_integer; | |
9721 | ||
46fc3d4c | 9722 | case 'O': |
29fe7a80 | 9723 | #ifdef IV_IS_QUAD |
22f3ae8c | 9724 | intsize = 'q'; |
29fe7a80 | 9725 | #else |
46fc3d4c | 9726 | intsize = 'l'; |
29fe7a80 | 9727 | #endif |
46fc3d4c | 9728 | /* FALL THROUGH */ |
9729 | case 'o': | |
9730 | base = 8; | |
9731 | goto uns_integer; | |
9732 | ||
9733 | case 'X': | |
46fc3d4c | 9734 | case 'x': |
9735 | base = 16; | |
46fc3d4c | 9736 | |
9737 | uns_integer: | |
b22c7a20 | 9738 | if (vectorize) { |
ba210ebe | 9739 | STRLEN ulen; |
b22c7a20 | 9740 | vector: |
211dfcf1 HS |
9741 | if (!veclen) |
9742 | continue; | |
2cf2cfc6 A |
9743 | if (vec_utf8) |
9744 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9745 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9746 | else { |
a05b299f | 9747 | uv = *vecstr; |
b22c7a20 GS |
9748 | ulen = 1; |
9749 | } | |
9750 | vecstr += ulen; | |
9751 | veclen -= ulen; | |
9752 | } | |
9753 | else if (args) { | |
46fc3d4c | 9754 | switch (intsize) { |
9755 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 9756 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 9757 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 9758 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 9759 | #ifdef HAS_QUAD |
9e3321a5 | 9760 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 9761 | #endif |
46fc3d4c | 9762 | } |
9763 | } | |
9764 | else { | |
b10c0dba | 9765 | UV tuv = SvUVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9766 | switch (intsize) { |
b10c0dba MHM |
9767 | case 'h': uv = (unsigned short)tuv; break; |
9768 | case 'l': uv = (unsigned long)tuv; break; | |
9769 | case 'V': | |
9770 | default: uv = tuv; break; | |
cf2093f6 | 9771 | #ifdef HAS_QUAD |
b10c0dba | 9772 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 9773 | #endif |
46fc3d4c | 9774 | } |
9775 | } | |
9776 | ||
9777 | integer: | |
4d84ee25 NC |
9778 | { |
9779 | char *ptr = ebuf + sizeof ebuf; | |
9780 | switch (base) { | |
9781 | unsigned dig; | |
9782 | case 16: | |
9783 | if (!uv) | |
9784 | alt = FALSE; | |
9785 | p = (char*)((c == 'X') | |
9786 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
9787 | do { | |
9788 | dig = uv & 15; | |
9789 | *--ptr = p[dig]; | |
9790 | } while (uv >>= 4); | |
9791 | if (alt) { | |
9792 | esignbuf[esignlen++] = '0'; | |
9793 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ | |
9794 | } | |
9795 | break; | |
9796 | case 8: | |
9797 | do { | |
9798 | dig = uv & 7; | |
9799 | *--ptr = '0' + dig; | |
9800 | } while (uv >>= 3); | |
9801 | if (alt && *ptr != '0') | |
9802 | *--ptr = '0'; | |
9803 | break; | |
9804 | case 2: | |
9805 | do { | |
9806 | dig = uv & 1; | |
9807 | *--ptr = '0' + dig; | |
9808 | } while (uv >>= 1); | |
9809 | if (alt) { | |
9810 | esignbuf[esignlen++] = '0'; | |
9811 | esignbuf[esignlen++] = 'b'; | |
9812 | } | |
9813 | break; | |
9814 | default: /* it had better be ten or less */ | |
9815 | do { | |
9816 | dig = uv % base; | |
9817 | *--ptr = '0' + dig; | |
9818 | } while (uv /= base); | |
9819 | break; | |
46fc3d4c | 9820 | } |
4d84ee25 NC |
9821 | elen = (ebuf + sizeof ebuf) - ptr; |
9822 | eptr = ptr; | |
9823 | if (has_precis) { | |
9824 | if (precis > elen) | |
9825 | zeros = precis - elen; | |
9826 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9827 | elen = 0; | |
eda88b6d | 9828 | } |
c10ed8b9 | 9829 | } |
46fc3d4c | 9830 | break; |
9831 | ||
9832 | /* FLOATING POINT */ | |
9833 | ||
fc36a67e | 9834 | case 'F': |
9835 | c = 'f'; /* maybe %F isn't supported here */ | |
9836 | /* FALL THROUGH */ | |
46fc3d4c | 9837 | case 'e': case 'E': |
fc36a67e | 9838 | case 'f': |
46fc3d4c | 9839 | case 'g': case 'G': |
9840 | ||
9841 | /* This is evil, but floating point is even more evil */ | |
9842 | ||
9e5b023a JH |
9843 | /* for SV-style calling, we can only get NV |
9844 | for C-style calling, we assume %f is double; | |
9845 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9846 | */ | |
9847 | switch (intsize) { | |
9848 | case 'V': | |
9849 | #if defined(USE_LONG_DOUBLE) | |
9850 | intsize = 'q'; | |
9851 | #endif | |
9852 | break; | |
8a2e3f14 | 9853 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9854 | case 'l': |
9855 | /* FALL THROUGH */ | |
9e5b023a JH |
9856 | default: |
9857 | #if defined(USE_LONG_DOUBLE) | |
9858 | intsize = args ? 0 : 'q'; | |
9859 | #endif | |
9860 | break; | |
9861 | case 'q': | |
9862 | #if defined(HAS_LONG_DOUBLE) | |
9863 | break; | |
9864 | #else | |
9865 | /* FALL THROUGH */ | |
9866 | #endif | |
9867 | case 'h': | |
9e5b023a JH |
9868 | goto unknown; |
9869 | } | |
9870 | ||
9871 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9872 | nv = (args && !vectorize) ? |
35fff930 JH |
9873 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9874 | intsize == 'q' ? | |
205f51d8 AS |
9875 | va_arg(*args, long double) : |
9876 | va_arg(*args, double) | |
35fff930 | 9877 | #else |
205f51d8 | 9878 | va_arg(*args, double) |
35fff930 | 9879 | #endif |
9e5b023a | 9880 | : SvNVx(argsv); |
fc36a67e | 9881 | |
9882 | need = 0; | |
be75b157 | 9883 | vectorize = FALSE; |
fc36a67e | 9884 | if (c != 'e' && c != 'E') { |
9885 | i = PERL_INT_MIN; | |
9e5b023a JH |
9886 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9887 | will cast our (long double) to (double) */ | |
73b309ea | 9888 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9889 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9890 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9891 | if (i > 0) |
fc36a67e | 9892 | need = BIT_DIGITS(i); |
9893 | } | |
9894 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9895 | |
fc36a67e | 9896 | if (need < width) |
9897 | need = width; | |
9898 | ||
20f6aaab AS |
9899 | #ifdef HAS_LDBL_SPRINTF_BUG |
9900 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9901 | with sfio - Allen <allens@cpan.org> */ |
9902 | ||
9903 | # ifdef DBL_MAX | |
9904 | # define MY_DBL_MAX DBL_MAX | |
9905 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9906 | # if DOUBLESIZE >= 8 | |
9907 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9908 | # else | |
9909 | # define MY_DBL_MAX 3.40282347E+38L | |
9910 | # endif | |
9911 | # endif | |
9912 | ||
9913 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9914 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9915 | # else |
205f51d8 | 9916 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9917 | # endif |
20f6aaab | 9918 | |
205f51d8 AS |
9919 | # ifdef DBL_MIN |
9920 | # define MY_DBL_MIN DBL_MIN | |
9921 | # else /* XXX guessing! -Allen */ | |
9922 | # if DOUBLESIZE >= 8 | |
9923 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9924 | # else | |
9925 | # define MY_DBL_MIN 1.17549435E-38L | |
9926 | # endif | |
9927 | # endif | |
20f6aaab | 9928 | |
205f51d8 AS |
9929 | if ((intsize == 'q') && (c == 'f') && |
9930 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9931 | (need < DBL_DIG)) { | |
9932 | /* it's going to be short enough that | |
9933 | * long double precision is not needed */ | |
9934 | ||
9935 | if ((nv <= 0L) && (nv >= -0L)) | |
9936 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9937 | else { | |
9938 | /* would use Perl_fp_class as a double-check but not | |
9939 | * functional on IRIX - see perl.h comments */ | |
9940 | ||
9941 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9942 | /* It's within the range that a double can represent */ | |
9943 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9944 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9945 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9946 | #endif |
205f51d8 | 9947 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9948 | } |
205f51d8 AS |
9949 | } |
9950 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9951 | double temp; | |
9952 | ||
9953 | intsize = 0; | |
9954 | temp = (double)nv; | |
9955 | nv = (NV)temp; | |
9956 | } | |
20f6aaab | 9957 | } |
205f51d8 AS |
9958 | |
9959 | # undef MY_DBL_MAX | |
9960 | # undef MY_DBL_MAX_BUG | |
9961 | # undef MY_DBL_MIN | |
9962 | ||
20f6aaab AS |
9963 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9964 | ||
46fc3d4c | 9965 | need += 20; /* fudge factor */ |
80252599 GS |
9966 | if (PL_efloatsize < need) { |
9967 | Safefree(PL_efloatbuf); | |
9968 | PL_efloatsize = need + 20; /* more fudge */ | |
9969 | New(906, PL_efloatbuf, PL_efloatsize, char); | |
7d5ea4e7 | 9970 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9971 | } |
9972 | ||
4151a5fe IZ |
9973 | if ( !(width || left || plus || alt) && fill != '0' |
9974 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
9975 | /* See earlier comment about buggy Gconvert when digits, |
9976 | aka precis is 0 */ | |
9977 | if ( c == 'g' && precis) { | |
2e59c212 | 9978 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4151a5fe IZ |
9979 | if (*PL_efloatbuf) /* May return an empty string for digits==0 */ |
9980 | goto float_converted; | |
9981 | } else if ( c == 'f' && !precis) { | |
9982 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
9983 | break; | |
9984 | } | |
9985 | } | |
4d84ee25 NC |
9986 | { |
9987 | char *ptr = ebuf + sizeof ebuf; | |
9988 | *--ptr = '\0'; | |
9989 | *--ptr = c; | |
9990 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ | |
9e5b023a | 9991 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) |
4d84ee25 NC |
9992 | if (intsize == 'q') { |
9993 | /* Copy the one or more characters in a long double | |
9994 | * format before the 'base' ([efgEFG]) character to | |
9995 | * the format string. */ | |
9996 | static char const prifldbl[] = PERL_PRIfldbl; | |
9997 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9998 | while (p >= prifldbl) { *--ptr = *p--; } | |
9999 | } | |
65202027 | 10000 | #endif |
4d84ee25 NC |
10001 | if (has_precis) { |
10002 | base = precis; | |
10003 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
10004 | *--ptr = '.'; | |
10005 | } | |
10006 | if (width) { | |
10007 | base = width; | |
10008 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
10009 | } | |
10010 | if (fill == '0') | |
10011 | *--ptr = fill; | |
10012 | if (left) | |
10013 | *--ptr = '-'; | |
10014 | if (plus) | |
10015 | *--ptr = plus; | |
10016 | if (alt) | |
10017 | *--ptr = '#'; | |
10018 | *--ptr = '%'; | |
10019 | ||
10020 | /* No taint. Otherwise we are in the strange situation | |
10021 | * where printf() taints but print($float) doesn't. | |
10022 | * --jhi */ | |
9e5b023a | 10023 | #if defined(HAS_LONG_DOUBLE) |
4d84ee25 NC |
10024 | if (intsize == 'q') |
10025 | (void)sprintf(PL_efloatbuf, ptr, nv); | |
10026 | else | |
10027 | (void)sprintf(PL_efloatbuf, ptr, (double)nv); | |
9e5b023a | 10028 | #else |
4d84ee25 | 10029 | (void)sprintf(PL_efloatbuf, ptr, nv); |
9e5b023a | 10030 | #endif |
4d84ee25 | 10031 | } |
4151a5fe | 10032 | float_converted: |
80252599 GS |
10033 | eptr = PL_efloatbuf; |
10034 | elen = strlen(PL_efloatbuf); | |
46fc3d4c | 10035 | break; |
10036 | ||
fc36a67e | 10037 | /* SPECIAL */ |
10038 | ||
10039 | case 'n': | |
10040 | i = SvCUR(sv) - origlen; | |
be75b157 | 10041 | if (args && !vectorize) { |
c635e13b | 10042 | switch (intsize) { |
10043 | case 'h': *(va_arg(*args, short*)) = i; break; | |
10044 | default: *(va_arg(*args, int*)) = i; break; | |
10045 | case 'l': *(va_arg(*args, long*)) = i; break; | |
10046 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
10047 | #ifdef HAS_QUAD |
10048 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
10049 | #endif | |
c635e13b | 10050 | } |
fc36a67e | 10051 | } |
9dd79c3f | 10052 | else |
211dfcf1 | 10053 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 10054 | vectorize = FALSE; |
fc36a67e | 10055 | continue; /* not "break" */ |
10056 | ||
10057 | /* UNKNOWN */ | |
10058 | ||
46fc3d4c | 10059 | default: |
fc36a67e | 10060 | unknown: |
599cee73 | 10061 | if (!args && ckWARN(WARN_PRINTF) && |
533c011a | 10062 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) { |
c635e13b | 10063 | SV *msg = sv_newmortal(); |
35c1215d NC |
10064 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
10065 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 10066 | if (c) { |
0f4b6630 | 10067 | if (isPRINT(c)) |
1c846c1f | 10068 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
10069 | "\"%%%c\"", c & 0xFF); |
10070 | else | |
10071 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 10072 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 10073 | (UV)c & 0xFF); |
0f4b6630 | 10074 | } else |
c635e13b | 10075 | sv_catpv(msg, "end of string"); |
9014280d | 10076 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 10077 | } |
fb73857a | 10078 | |
10079 | /* output mangled stuff ... */ | |
10080 | if (c == '\0') | |
10081 | --q; | |
46fc3d4c | 10082 | eptr = p; |
10083 | elen = q - p; | |
fb73857a | 10084 | |
10085 | /* ... right here, because formatting flags should not apply */ | |
10086 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10087 | p = SvEND(sv); | |
4459522c | 10088 | Copy(eptr, p, elen, char); |
fb73857a | 10089 | p += elen; |
10090 | *p = '\0'; | |
3f7c398e | 10091 | SvCUR_set(sv, p - SvPVX_const(sv)); |
58e33a90 | 10092 | svix = osvix; |
fb73857a | 10093 | continue; /* not "break" */ |
46fc3d4c | 10094 | } |
10095 | ||
6c94ec8b HS |
10096 | /* calculate width before utf8_upgrade changes it */ |
10097 | have = esignlen + zeros + elen; | |
10098 | ||
d2876be5 JH |
10099 | if (is_utf8 != has_utf8) { |
10100 | if (is_utf8) { | |
10101 | if (SvCUR(sv)) | |
10102 | sv_utf8_upgrade(sv); | |
10103 | } | |
10104 | else { | |
10105 | SV *nsv = sv_2mortal(newSVpvn(eptr, elen)); | |
10106 | sv_utf8_upgrade(nsv); | |
10107 | eptr = SvPVX(nsv); | |
10108 | elen = SvCUR(nsv); | |
10109 | } | |
10110 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
10111 | p = SvEND(sv); | |
10112 | *p = '\0'; | |
10113 | } | |
6af65485 | 10114 | |
46fc3d4c | 10115 | need = (have > width ? have : width); |
10116 | gap = need - have; | |
10117 | ||
b22c7a20 | 10118 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 10119 | p = SvEND(sv); |
10120 | if (esignlen && fill == '0') { | |
eb160463 | 10121 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10122 | *p++ = esignbuf[i]; |
10123 | } | |
10124 | if (gap && !left) { | |
10125 | memset(p, fill, gap); | |
10126 | p += gap; | |
10127 | } | |
10128 | if (esignlen && fill != '0') { | |
eb160463 | 10129 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 10130 | *p++ = esignbuf[i]; |
10131 | } | |
fc36a67e | 10132 | if (zeros) { |
10133 | for (i = zeros; i; i--) | |
10134 | *p++ = '0'; | |
10135 | } | |
46fc3d4c | 10136 | if (elen) { |
4459522c | 10137 | Copy(eptr, p, elen, char); |
46fc3d4c | 10138 | p += elen; |
10139 | } | |
10140 | if (gap && left) { | |
10141 | memset(p, ' ', gap); | |
10142 | p += gap; | |
10143 | } | |
b22c7a20 GS |
10144 | if (vectorize) { |
10145 | if (veclen) { | |
4459522c | 10146 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
10147 | p += dotstrlen; |
10148 | } | |
10149 | else | |
10150 | vectorize = FALSE; /* done iterating over vecstr */ | |
10151 | } | |
2cf2cfc6 A |
10152 | if (is_utf8) |
10153 | has_utf8 = TRUE; | |
10154 | if (has_utf8) | |
7e2040f0 | 10155 | SvUTF8_on(sv); |
46fc3d4c | 10156 | *p = '\0'; |
3f7c398e | 10157 | SvCUR_set(sv, p - SvPVX_const(sv)); |
b22c7a20 GS |
10158 | if (vectorize) { |
10159 | esignlen = 0; | |
10160 | goto vector; | |
10161 | } | |
46fc3d4c | 10162 | } |
10163 | } | |
51371543 | 10164 | |
645c22ef DM |
10165 | /* ========================================================================= |
10166 | ||
10167 | =head1 Cloning an interpreter | |
10168 | ||
10169 | All the macros and functions in this section are for the private use of | |
10170 | the main function, perl_clone(). | |
10171 | ||
10172 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
10173 | During the course of a cloning, a hash table is used to map old addresses | |
10174 | to new addresses. The table is created and manipulated with the | |
10175 | ptr_table_* functions. | |
10176 | ||
10177 | =cut | |
10178 | ||
10179 | ============================================================================*/ | |
10180 | ||
10181 | ||
1d7c1841 GS |
10182 | #if defined(USE_ITHREADS) |
10183 | ||
1d7c1841 GS |
10184 | #ifndef GpREFCNT_inc |
10185 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
10186 | #endif | |
10187 | ||
10188 | ||
d2d73c3e AB |
10189 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
10190 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
10191 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10192 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
10193 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10194 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
10195 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10196 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
10197 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
10198 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
10199 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
10200 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
10201 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 10202 | |
d2d73c3e | 10203 | |
d2f185dc AMS |
10204 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
10205 | regcomp.c. AMS 20010712 */ | |
645c22ef | 10206 | |
1d7c1841 | 10207 | REGEXP * |
a8fc9800 | 10208 | Perl_re_dup(pTHX_ REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 10209 | { |
27da23d5 | 10210 | dVAR; |
d2f185dc AMS |
10211 | REGEXP *ret; |
10212 | int i, len, npar; | |
10213 | struct reg_substr_datum *s; | |
10214 | ||
10215 | if (!r) | |
10216 | return (REGEXP *)NULL; | |
10217 | ||
10218 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
10219 | return ret; | |
10220 | ||
10221 | len = r->offsets[0]; | |
10222 | npar = r->nparens+1; | |
10223 | ||
10224 | Newc(0, ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); | |
10225 | Copy(r->program, ret->program, len+1, regnode); | |
10226 | ||
10227 | New(0, ret->startp, npar, I32); | |
10228 | Copy(r->startp, ret->startp, npar, I32); | |
10229 | New(0, ret->endp, npar, I32); | |
10230 | Copy(r->startp, ret->startp, npar, I32); | |
10231 | ||
d2f185dc AMS |
10232 | New(0, ret->substrs, 1, struct reg_substr_data); |
10233 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { | |
10234 | s->min_offset = r->substrs->data[i].min_offset; | |
10235 | s->max_offset = r->substrs->data[i].max_offset; | |
10236 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 10237 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
10238 | } |
10239 | ||
70612e96 | 10240 | ret->regstclass = NULL; |
d2f185dc AMS |
10241 | if (r->data) { |
10242 | struct reg_data *d; | |
e1ec3a88 | 10243 | const int count = r->data->count; |
d2f185dc AMS |
10244 | |
10245 | Newc(0, d, sizeof(struct reg_data) + count*sizeof(void *), | |
10246 | char, struct reg_data); | |
10247 | New(0, d->what, count, U8); | |
10248 | ||
10249 | d->count = count; | |
10250 | for (i = 0; i < count; i++) { | |
10251 | d->what[i] = r->data->what[i]; | |
10252 | switch (d->what[i]) { | |
a3621e74 YO |
10253 | /* legal options are one of: sfpont |
10254 | see also regcomp.h and pregfree() */ | |
d2f185dc AMS |
10255 | case 's': |
10256 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
10257 | break; | |
10258 | case 'p': | |
10259 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
10260 | break; | |
10261 | case 'f': | |
10262 | /* This is cheating. */ | |
10263 | New(0, d->data[i], 1, struct regnode_charclass_class); | |
10264 | StructCopy(r->data->data[i], d->data[i], | |
10265 | struct regnode_charclass_class); | |
70612e96 | 10266 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
10267 | break; |
10268 | case 'o': | |
33773810 AMS |
10269 | /* Compiled op trees are readonly, and can thus be |
10270 | shared without duplication. */ | |
b34c0dd4 | 10271 | OP_REFCNT_LOCK; |
9b978d73 | 10272 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
b34c0dd4 | 10273 | OP_REFCNT_UNLOCK; |
9b978d73 | 10274 | break; |
d2f185dc AMS |
10275 | case 'n': |
10276 | d->data[i] = r->data->data[i]; | |
10277 | break; | |
a3621e74 YO |
10278 | case 't': |
10279 | d->data[i] = r->data->data[i]; | |
10280 | OP_REFCNT_LOCK; | |
10281 | ((reg_trie_data*)d->data[i])->refcount++; | |
10282 | OP_REFCNT_UNLOCK; | |
10283 | break; | |
10284 | default: | |
10285 | Perl_croak(aTHX_ "panic: re_dup unknown data code '%c'", r->data->what[i]); | |
d2f185dc AMS |
10286 | } |
10287 | } | |
10288 | ||
10289 | ret->data = d; | |
10290 | } | |
10291 | else | |
10292 | ret->data = NULL; | |
10293 | ||
10294 | New(0, ret->offsets, 2*len+1, U32); | |
10295 | Copy(r->offsets, ret->offsets, 2*len+1, U32); | |
10296 | ||
e01c5899 | 10297 | ret->precomp = SAVEPVN(r->precomp, r->prelen); |
d2f185dc AMS |
10298 | ret->refcnt = r->refcnt; |
10299 | ret->minlen = r->minlen; | |
10300 | ret->prelen = r->prelen; | |
10301 | ret->nparens = r->nparens; | |
10302 | ret->lastparen = r->lastparen; | |
10303 | ret->lastcloseparen = r->lastcloseparen; | |
10304 | ret->reganch = r->reganch; | |
10305 | ||
70612e96 RG |
10306 | ret->sublen = r->sublen; |
10307 | ||
10308 | if (RX_MATCH_COPIED(ret)) | |
e01c5899 | 10309 | ret->subbeg = SAVEPVN(r->subbeg, r->sublen); |
70612e96 RG |
10310 | else |
10311 | ret->subbeg = Nullch; | |
9a26048b NC |
10312 | #ifdef PERL_COPY_ON_WRITE |
10313 | ret->saved_copy = Nullsv; | |
10314 | #endif | |
70612e96 | 10315 | |
d2f185dc AMS |
10316 | ptr_table_store(PL_ptr_table, r, ret); |
10317 | return ret; | |
1d7c1841 GS |
10318 | } |
10319 | ||
d2d73c3e | 10320 | /* duplicate a file handle */ |
645c22ef | 10321 | |
1d7c1841 | 10322 | PerlIO * |
a8fc9800 | 10323 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
10324 | { |
10325 | PerlIO *ret; | |
73d840c0 AL |
10326 | (void)type; |
10327 | ||
1d7c1841 GS |
10328 | if (!fp) |
10329 | return (PerlIO*)NULL; | |
10330 | ||
10331 | /* look for it in the table first */ | |
10332 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
10333 | if (ret) | |
10334 | return ret; | |
10335 | ||
10336 | /* create anew and remember what it is */ | |
ecdeb87c | 10337 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
10338 | ptr_table_store(PL_ptr_table, fp, ret); |
10339 | return ret; | |
10340 | } | |
10341 | ||
645c22ef DM |
10342 | /* duplicate a directory handle */ |
10343 | ||
1d7c1841 GS |
10344 | DIR * |
10345 | Perl_dirp_dup(pTHX_ DIR *dp) | |
10346 | { | |
10347 | if (!dp) | |
10348 | return (DIR*)NULL; | |
10349 | /* XXX TODO */ | |
10350 | return dp; | |
10351 | } | |
10352 | ||
ff276b08 | 10353 | /* duplicate a typeglob */ |
645c22ef | 10354 | |
1d7c1841 | 10355 | GP * |
a8fc9800 | 10356 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
10357 | { |
10358 | GP *ret; | |
10359 | if (!gp) | |
10360 | return (GP*)NULL; | |
10361 | /* look for it in the table first */ | |
10362 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
10363 | if (ret) | |
10364 | return ret; | |
10365 | ||
10366 | /* create anew and remember what it is */ | |
10367 | Newz(0, ret, 1, GP); | |
10368 | ptr_table_store(PL_ptr_table, gp, ret); | |
10369 | ||
10370 | /* clone */ | |
10371 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
10372 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
10373 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
10374 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
10375 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
10376 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
10377 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
10378 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 GS |
10379 | ret->gp_cvgen = gp->gp_cvgen; |
10380 | ret->gp_flags = gp->gp_flags; | |
10381 | ret->gp_line = gp->gp_line; | |
10382 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
10383 | return ret; | |
10384 | } | |
10385 | ||
645c22ef DM |
10386 | /* duplicate a chain of magic */ |
10387 | ||
1d7c1841 | 10388 | MAGIC * |
a8fc9800 | 10389 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 10390 | { |
cb359b41 JH |
10391 | MAGIC *mgprev = (MAGIC*)NULL; |
10392 | MAGIC *mgret; | |
1d7c1841 GS |
10393 | if (!mg) |
10394 | return (MAGIC*)NULL; | |
10395 | /* look for it in the table first */ | |
10396 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
10397 | if (mgret) | |
10398 | return mgret; | |
10399 | ||
10400 | for (; mg; mg = mg->mg_moremagic) { | |
10401 | MAGIC *nmg; | |
10402 | Newz(0, nmg, 1, MAGIC); | |
cb359b41 | 10403 | if (mgprev) |
1d7c1841 | 10404 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
10405 | else |
10406 | mgret = nmg; | |
1d7c1841 GS |
10407 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
10408 | nmg->mg_private = mg->mg_private; | |
10409 | nmg->mg_type = mg->mg_type; | |
10410 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 10411 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 10412 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 10413 | } |
05bd4103 | 10414 | else if(mg->mg_type == PERL_MAGIC_backref) { |
7fc63493 | 10415 | const AV * const av = (AV*) mg->mg_obj; |
fdc9a813 AE |
10416 | SV **svp; |
10417 | I32 i; | |
7fc63493 | 10418 | (void)SvREFCNT_inc(nmg->mg_obj = (SV*)newAV()); |
fdc9a813 AE |
10419 | svp = AvARRAY(av); |
10420 | for (i = AvFILLp(av); i >= 0; i--) { | |
3a81978b | 10421 | if (!svp[i]) continue; |
fdc9a813 AE |
10422 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); |
10423 | } | |
05bd4103 | 10424 | } |
8d2f4536 NC |
10425 | else if (mg->mg_type == PERL_MAGIC_symtab) { |
10426 | nmg->mg_obj = mg->mg_obj; | |
10427 | } | |
1d7c1841 GS |
10428 | else { |
10429 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
10430 | ? sv_dup_inc(mg->mg_obj, param) |
10431 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
10432 | } |
10433 | nmg->mg_len = mg->mg_len; | |
10434 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 10435 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 10436 | if (mg->mg_len > 0) { |
1d7c1841 | 10437 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
10438 | if (mg->mg_type == PERL_MAGIC_overload_table && |
10439 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
10440 | { | |
1d7c1841 GS |
10441 | AMT *amtp = (AMT*)mg->mg_ptr; |
10442 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
10443 | I32 i; | |
10444 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 10445 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
10446 | } |
10447 | } | |
10448 | } | |
10449 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 10450 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 10451 | } |
68795e93 NIS |
10452 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
10453 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
10454 | } | |
1d7c1841 GS |
10455 | mgprev = nmg; |
10456 | } | |
10457 | return mgret; | |
10458 | } | |
10459 | ||
645c22ef DM |
10460 | /* create a new pointer-mapping table */ |
10461 | ||
1d7c1841 GS |
10462 | PTR_TBL_t * |
10463 | Perl_ptr_table_new(pTHX) | |
10464 | { | |
10465 | PTR_TBL_t *tbl; | |
10466 | Newz(0, tbl, 1, PTR_TBL_t); | |
10467 | tbl->tbl_max = 511; | |
10468 | tbl->tbl_items = 0; | |
10469 | Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); | |
10470 | return tbl; | |
10471 | } | |
10472 | ||
134ca3d6 DM |
10473 | #if (PTRSIZE == 8) |
10474 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 3) | |
10475 | #else | |
10476 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 2) | |
10477 | #endif | |
10478 | ||
32e691d0 NC |
10479 | |
10480 | ||
10481 | STATIC void | |
10482 | S_more_pte(pTHX) | |
10483 | { | |
cac9b346 NC |
10484 | struct ptr_tbl_ent* pte; |
10485 | struct ptr_tbl_ent* pteend; | |
c3929b72 NC |
10486 | New(0, pte, PERL_ARENA_SIZE/sizeof(struct ptr_tbl_ent), struct ptr_tbl_ent); |
10487 | pte->next = PL_pte_arenaroot; | |
10488 | PL_pte_arenaroot = pte; | |
32e691d0 | 10489 | |
9c17f24a | 10490 | pteend = &pte[PERL_ARENA_SIZE / sizeof(struct ptr_tbl_ent) - 1]; |
32e691d0 NC |
10491 | PL_pte_root = ++pte; |
10492 | while (pte < pteend) { | |
10493 | pte->next = pte + 1; | |
10494 | pte++; | |
10495 | } | |
10496 | pte->next = 0; | |
10497 | } | |
10498 | ||
10499 | STATIC struct ptr_tbl_ent* | |
10500 | S_new_pte(pTHX) | |
10501 | { | |
10502 | struct ptr_tbl_ent* pte; | |
10503 | if (!PL_pte_root) | |
10504 | S_more_pte(aTHX); | |
10505 | pte = PL_pte_root; | |
10506 | PL_pte_root = pte->next; | |
10507 | return pte; | |
10508 | } | |
10509 | ||
10510 | STATIC void | |
10511 | S_del_pte(pTHX_ struct ptr_tbl_ent*p) | |
10512 | { | |
10513 | p->next = PL_pte_root; | |
10514 | PL_pte_root = p; | |
10515 | } | |
10516 | ||
645c22ef DM |
10517 | /* map an existing pointer using a table */ |
10518 | ||
1d7c1841 GS |
10519 | void * |
10520 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv) | |
10521 | { | |
10522 | PTR_TBL_ENT_t *tblent; | |
4373e329 | 10523 | const UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
10524 | assert(tbl); |
10525 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
10526 | for (; tblent; tblent = tblent->next) { | |
10527 | if (tblent->oldval == sv) | |
10528 | return tblent->newval; | |
10529 | } | |
10530 | return (void*)NULL; | |
10531 | } | |
10532 | ||
645c22ef DM |
10533 | /* add a new entry to a pointer-mapping table */ |
10534 | ||
1d7c1841 GS |
10535 | void |
10536 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv) | |
10537 | { | |
10538 | PTR_TBL_ENT_t *tblent, **otblent; | |
10539 | /* XXX this may be pessimal on platforms where pointers aren't good | |
10540 | * hash values e.g. if they grow faster in the most significant | |
10541 | * bits */ | |
4373e329 | 10542 | const UV hash = PTR_TABLE_HASH(oldv); |
14cade97 | 10543 | bool empty = 1; |
1d7c1841 GS |
10544 | |
10545 | assert(tbl); | |
10546 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
14cade97 | 10547 | for (tblent = *otblent; tblent; empty=0, tblent = tblent->next) { |
1d7c1841 GS |
10548 | if (tblent->oldval == oldv) { |
10549 | tblent->newval = newv; | |
1d7c1841 GS |
10550 | return; |
10551 | } | |
10552 | } | |
32e691d0 | 10553 | tblent = S_new_pte(aTHX); |
1d7c1841 GS |
10554 | tblent->oldval = oldv; |
10555 | tblent->newval = newv; | |
10556 | tblent->next = *otblent; | |
10557 | *otblent = tblent; | |
10558 | tbl->tbl_items++; | |
14cade97 | 10559 | if (!empty && tbl->tbl_items > tbl->tbl_max) |
1d7c1841 GS |
10560 | ptr_table_split(tbl); |
10561 | } | |
10562 | ||
645c22ef DM |
10563 | /* double the hash bucket size of an existing ptr table */ |
10564 | ||
1d7c1841 GS |
10565 | void |
10566 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
10567 | { | |
10568 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
4373e329 | 10569 | const UV oldsize = tbl->tbl_max + 1; |
1d7c1841 GS |
10570 | UV newsize = oldsize * 2; |
10571 | UV i; | |
10572 | ||
10573 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
10574 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
10575 | tbl->tbl_max = --newsize; | |
10576 | tbl->tbl_ary = ary; | |
10577 | for (i=0; i < oldsize; i++, ary++) { | |
10578 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
10579 | if (!*ary) | |
10580 | continue; | |
10581 | curentp = ary + oldsize; | |
10582 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 10583 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
10584 | *entp = ent->next; |
10585 | ent->next = *curentp; | |
10586 | *curentp = ent; | |
10587 | continue; | |
10588 | } | |
10589 | else | |
10590 | entp = &ent->next; | |
10591 | } | |
10592 | } | |
10593 | } | |
10594 | ||
645c22ef DM |
10595 | /* remove all the entries from a ptr table */ |
10596 | ||
a0739874 DM |
10597 | void |
10598 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
10599 | { | |
10600 | register PTR_TBL_ENT_t **array; | |
10601 | register PTR_TBL_ENT_t *entry; | |
a0739874 DM |
10602 | UV riter = 0; |
10603 | UV max; | |
10604 | ||
10605 | if (!tbl || !tbl->tbl_items) { | |
10606 | return; | |
10607 | } | |
10608 | ||
10609 | array = tbl->tbl_ary; | |
10610 | entry = array[0]; | |
10611 | max = tbl->tbl_max; | |
10612 | ||
10613 | for (;;) { | |
10614 | if (entry) { | |
4373e329 | 10615 | PTR_TBL_ENT_t *oentry = entry; |
a0739874 | 10616 | entry = entry->next; |
32e691d0 | 10617 | S_del_pte(aTHX_ oentry); |
a0739874 DM |
10618 | } |
10619 | if (!entry) { | |
10620 | if (++riter > max) { | |
10621 | break; | |
10622 | } | |
10623 | entry = array[riter]; | |
10624 | } | |
10625 | } | |
10626 | ||
10627 | tbl->tbl_items = 0; | |
10628 | } | |
10629 | ||
645c22ef DM |
10630 | /* clear and free a ptr table */ |
10631 | ||
a0739874 DM |
10632 | void |
10633 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
10634 | { | |
10635 | if (!tbl) { | |
10636 | return; | |
10637 | } | |
10638 | ptr_table_clear(tbl); | |
10639 | Safefree(tbl->tbl_ary); | |
10640 | Safefree(tbl); | |
10641 | } | |
10642 | ||
645c22ef DM |
10643 | /* attempt to make everything in the typeglob readonly */ |
10644 | ||
5bd07a3d | 10645 | STATIC SV * |
59b40662 | 10646 | S_gv_share(pTHX_ SV *sstr, CLONE_PARAMS *param) |
5bd07a3d DM |
10647 | { |
10648 | GV *gv = (GV*)sstr; | |
59b40662 | 10649 | SV *sv = ¶m->proto_perl->Isv_no; /* just need SvREADONLY-ness */ |
5bd07a3d DM |
10650 | |
10651 | if (GvIO(gv) || GvFORM(gv)) { | |
7fb37951 | 10652 | GvUNIQUE_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */ |
5bd07a3d DM |
10653 | } |
10654 | else if (!GvCV(gv)) { | |
10655 | GvCV(gv) = (CV*)sv; | |
10656 | } | |
10657 | else { | |
10658 | /* CvPADLISTs cannot be shared */ | |
37e20706 | 10659 | if (!SvREADONLY(GvCV(gv)) && !CvXSUB(GvCV(gv))) { |
7fb37951 | 10660 | GvUNIQUE_off(gv); |
5bd07a3d DM |
10661 | } |
10662 | } | |
10663 | ||
7fb37951 | 10664 | if (!GvUNIQUE(gv)) { |
5bd07a3d DM |
10665 | #if 0 |
10666 | PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n", | |
bfcb3514 | 10667 | HvNAME_get(GvSTASH(gv)), GvNAME(gv)); |
5bd07a3d DM |
10668 | #endif |
10669 | return Nullsv; | |
10670 | } | |
10671 | ||
4411f3b6 | 10672 | /* |
5bd07a3d DM |
10673 | * write attempts will die with |
10674 | * "Modification of a read-only value attempted" | |
10675 | */ | |
10676 | if (!GvSV(gv)) { | |
10677 | GvSV(gv) = sv; | |
10678 | } | |
10679 | else { | |
10680 | SvREADONLY_on(GvSV(gv)); | |
10681 | } | |
10682 | ||
10683 | if (!GvAV(gv)) { | |
10684 | GvAV(gv) = (AV*)sv; | |
10685 | } | |
10686 | else { | |
10687 | SvREADONLY_on(GvAV(gv)); | |
10688 | } | |
10689 | ||
10690 | if (!GvHV(gv)) { | |
10691 | GvHV(gv) = (HV*)sv; | |
10692 | } | |
10693 | else { | |
53c33732 | 10694 | SvREADONLY_on(GvHV(gv)); |
5bd07a3d DM |
10695 | } |
10696 | ||
10697 | return sstr; /* he_dup() will SvREFCNT_inc() */ | |
10698 | } | |
10699 | ||
645c22ef DM |
10700 | /* duplicate an SV of any type (including AV, HV etc) */ |
10701 | ||
83841fad NIS |
10702 | void |
10703 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
10704 | { | |
10705 | if (SvROK(sstr)) { | |
b162af07 SP |
10706 | SvRV_set(dstr, SvWEAKREF(sstr) |
10707 | ? sv_dup(SvRV(sstr), param) | |
10708 | : sv_dup_inc(SvRV(sstr), param)); | |
f880fe2f | 10709 | |
83841fad | 10710 | } |
3f7c398e | 10711 | else if (SvPVX_const(sstr)) { |
83841fad NIS |
10712 | /* Has something there */ |
10713 | if (SvLEN(sstr)) { | |
68795e93 | 10714 | /* Normal PV - clone whole allocated space */ |
3f7c398e | 10715 | SvPV_set(dstr, SAVEPVN(SvPVX_const(sstr), SvLEN(sstr)-1)); |
d3d0e6f1 NC |
10716 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
10717 | /* Not that normal - actually sstr is copy on write. | |
10718 | But we are a true, independant SV, so: */ | |
10719 | SvREADONLY_off(dstr); | |
10720 | SvFAKE_off(dstr); | |
10721 | } | |
68795e93 | 10722 | } |
83841fad NIS |
10723 | else { |
10724 | /* Special case - not normally malloced for some reason */ | |
10725 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { | |
10726 | /* A "shared" PV - clone it as unshared string */ | |
281b2760 | 10727 | if(SvPADTMP(sstr)) { |
5e6160dc AB |
10728 | /* However, some of them live in the pad |
10729 | and they should not have these flags | |
10730 | turned off */ | |
281b2760 | 10731 | |
3f7c398e | 10732 | SvPV_set(dstr, sharepvn(SvPVX_const(sstr), SvCUR(sstr), |
f880fe2f | 10733 | SvUVX(sstr))); |
607fa7f2 | 10734 | SvUV_set(dstr, SvUVX(sstr)); |
281b2760 AB |
10735 | } else { |
10736 | ||
3f7c398e | 10737 | SvPV_set(dstr, SAVEPVN(SvPVX_const(sstr), SvCUR(sstr))); |
281b2760 AB |
10738 | SvFAKE_off(dstr); |
10739 | SvREADONLY_off(dstr); | |
5e6160dc | 10740 | } |
83841fad NIS |
10741 | } |
10742 | else { | |
10743 | /* Some other special case - random pointer */ | |
f880fe2f | 10744 | SvPV_set(dstr, SvPVX(sstr)); |
d3d0e6f1 | 10745 | } |
83841fad NIS |
10746 | } |
10747 | } | |
10748 | else { | |
10749 | /* Copy the Null */ | |
f880fe2f | 10750 | if (SvTYPE(dstr) == SVt_RV) |
b162af07 | 10751 | SvRV_set(dstr, NULL); |
f880fe2f SP |
10752 | else |
10753 | SvPV_set(dstr, 0); | |
83841fad NIS |
10754 | } |
10755 | } | |
10756 | ||
1d7c1841 | 10757 | SV * |
a8fc9800 | 10758 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 10759 | { |
27da23d5 | 10760 | dVAR; |
1d7c1841 GS |
10761 | SV *dstr; |
10762 | ||
10763 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
10764 | return Nullsv; | |
10765 | /* look for it in the table first */ | |
10766 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
10767 | if (dstr) | |
10768 | return dstr; | |
10769 | ||
0405e91e AB |
10770 | if(param->flags & CLONEf_JOIN_IN) { |
10771 | /** We are joining here so we don't want do clone | |
10772 | something that is bad **/ | |
bfcb3514 | 10773 | const char *hvname; |
0405e91e AB |
10774 | |
10775 | if(SvTYPE(sstr) == SVt_PVHV && | |
bfcb3514 | 10776 | (hvname = HvNAME_get(sstr))) { |
0405e91e | 10777 | /** don't clone stashes if they already exist **/ |
bfcb3514 | 10778 | HV* old_stash = gv_stashpv(hvname,0); |
0405e91e AB |
10779 | return (SV*) old_stash; |
10780 | } | |
10781 | } | |
10782 | ||
1d7c1841 GS |
10783 | /* create anew and remember what it is */ |
10784 | new_SV(dstr); | |
fd0854ff DM |
10785 | |
10786 | #ifdef DEBUG_LEAKING_SCALARS | |
10787 | dstr->sv_debug_optype = sstr->sv_debug_optype; | |
10788 | dstr->sv_debug_line = sstr->sv_debug_line; | |
10789 | dstr->sv_debug_inpad = sstr->sv_debug_inpad; | |
10790 | dstr->sv_debug_cloned = 1; | |
10791 | # ifdef NETWARE | |
10792 | dstr->sv_debug_file = savepv(sstr->sv_debug_file); | |
10793 | # else | |
10794 | dstr->sv_debug_file = savesharedpv(sstr->sv_debug_file); | |
10795 | # endif | |
10796 | #endif | |
10797 | ||
1d7c1841 GS |
10798 | ptr_table_store(PL_ptr_table, sstr, dstr); |
10799 | ||
10800 | /* clone */ | |
10801 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
10802 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
10803 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
10804 | ||
10805 | #ifdef DEBUGGING | |
3f7c398e | 10806 | if (SvANY(sstr) && PL_watch_pvx && SvPVX_const(sstr) == PL_watch_pvx) |
1d7c1841 | 10807 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", |
3f7c398e | 10808 | PL_watch_pvx, SvPVX_const(sstr)); |
1d7c1841 GS |
10809 | #endif |
10810 | ||
9660f481 DM |
10811 | /* don't clone objects whose class has asked us not to */ |
10812 | if (SvOBJECT(sstr) && ! (SvFLAGS(SvSTASH(sstr)) & SVphv_CLONEABLE)) { | |
10813 | SvFLAGS(dstr) &= ~SVTYPEMASK; | |
10814 | SvOBJECT_off(dstr); | |
10815 | return dstr; | |
10816 | } | |
10817 | ||
1d7c1841 GS |
10818 | switch (SvTYPE(sstr)) { |
10819 | case SVt_NULL: | |
10820 | SvANY(dstr) = NULL; | |
10821 | break; | |
10822 | case SVt_IV: | |
339049b0 | 10823 | SvANY(dstr) = (XPVIV*)((char*)&(dstr->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
45977657 | 10824 | SvIV_set(dstr, SvIVX(sstr)); |
1d7c1841 GS |
10825 | break; |
10826 | case SVt_NV: | |
10827 | SvANY(dstr) = new_XNV(); | |
9d6ce603 | 10828 | SvNV_set(dstr, SvNVX(sstr)); |
1d7c1841 GS |
10829 | break; |
10830 | case SVt_RV: | |
339049b0 | 10831 | SvANY(dstr) = &(dstr->sv_u.svu_rv); |
83841fad | 10832 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10833 | break; |
10834 | case SVt_PV: | |
10835 | SvANY(dstr) = new_XPV(); | |
b162af07 SP |
10836 | SvCUR_set(dstr, SvCUR(sstr)); |
10837 | SvLEN_set(dstr, SvLEN(sstr)); | |
83841fad | 10838 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10839 | break; |
10840 | case SVt_PVIV: | |
10841 | SvANY(dstr) = new_XPVIV(); | |
b162af07 SP |
10842 | SvCUR_set(dstr, SvCUR(sstr)); |
10843 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10844 | SvIV_set(dstr, SvIVX(sstr)); |
83841fad | 10845 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10846 | break; |
10847 | case SVt_PVNV: | |
10848 | SvANY(dstr) = new_XPVNV(); | |
b162af07 SP |
10849 | SvCUR_set(dstr, SvCUR(sstr)); |
10850 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10851 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10852 | SvNV_set(dstr, SvNVX(sstr)); |
83841fad | 10853 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10854 | break; |
10855 | case SVt_PVMG: | |
10856 | SvANY(dstr) = new_XPVMG(); | |
b162af07 SP |
10857 | SvCUR_set(dstr, SvCUR(sstr)); |
10858 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10859 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10860 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10861 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10862 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10863 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10864 | break; |
10865 | case SVt_PVBM: | |
10866 | SvANY(dstr) = new_XPVBM(); | |
b162af07 SP |
10867 | SvCUR_set(dstr, SvCUR(sstr)); |
10868 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10869 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10870 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10871 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10872 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10873 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10874 | BmRARE(dstr) = BmRARE(sstr); |
10875 | BmUSEFUL(dstr) = BmUSEFUL(sstr); | |
10876 | BmPREVIOUS(dstr)= BmPREVIOUS(sstr); | |
10877 | break; | |
10878 | case SVt_PVLV: | |
10879 | SvANY(dstr) = new_XPVLV(); | |
b162af07 SP |
10880 | SvCUR_set(dstr, SvCUR(sstr)); |
10881 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10882 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10883 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10884 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10885 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10886 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10887 | LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */ |
10888 | LvTARGLEN(dstr) = LvTARGLEN(sstr); | |
dd28f7bb DM |
10889 | if (LvTYPE(sstr) == 't') /* for tie: unrefcnted fake (SV**) */ |
10890 | LvTARG(dstr) = dstr; | |
10891 | else if (LvTYPE(sstr) == 'T') /* for tie: fake HE */ | |
10892 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(sstr), 0, param); | |
10893 | else | |
10894 | LvTARG(dstr) = sv_dup_inc(LvTARG(sstr), param); | |
1d7c1841 GS |
10895 | LvTYPE(dstr) = LvTYPE(sstr); |
10896 | break; | |
10897 | case SVt_PVGV: | |
7fb37951 | 10898 | if (GvUNIQUE((GV*)sstr)) { |
5bd07a3d | 10899 | SV *share; |
59b40662 | 10900 | if ((share = gv_share(sstr, param))) { |
5bd07a3d DM |
10901 | del_SV(dstr); |
10902 | dstr = share; | |
37e20706 | 10903 | ptr_table_store(PL_ptr_table, sstr, dstr); |
5bd07a3d DM |
10904 | #if 0 |
10905 | PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n", | |
bfcb3514 | 10906 | HvNAME_get(GvSTASH(share)), GvNAME(share)); |
5bd07a3d DM |
10907 | #endif |
10908 | break; | |
10909 | } | |
10910 | } | |
1d7c1841 | 10911 | SvANY(dstr) = new_XPVGV(); |
b162af07 SP |
10912 | SvCUR_set(dstr, SvCUR(sstr)); |
10913 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10914 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10915 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10916 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10917 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10918 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 GS |
10919 | GvNAMELEN(dstr) = GvNAMELEN(sstr); |
10920 | GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr)); | |
d2d73c3e | 10921 | GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr), param); |
1d7c1841 | 10922 | GvFLAGS(dstr) = GvFLAGS(sstr); |
d2d73c3e | 10923 | GvGP(dstr) = gp_dup(GvGP(sstr), param); |
1d7c1841 GS |
10924 | (void)GpREFCNT_inc(GvGP(dstr)); |
10925 | break; | |
10926 | case SVt_PVIO: | |
10927 | SvANY(dstr) = new_XPVIO(); | |
b162af07 SP |
10928 | SvCUR_set(dstr, SvCUR(sstr)); |
10929 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 10930 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 10931 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
10932 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10933 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 10934 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
a8fc9800 | 10935 | IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10936 | if (IoOFP(sstr) == IoIFP(sstr)) |
10937 | IoOFP(dstr) = IoIFP(dstr); | |
10938 | else | |
a8fc9800 | 10939 | IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr), param); |
1d7c1841 GS |
10940 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
10941 | if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP)) | |
10942 | IoDIRP(dstr) = dirp_dup(IoDIRP(sstr)); | |
10943 | else | |
10944 | IoDIRP(dstr) = IoDIRP(sstr); | |
10945 | IoLINES(dstr) = IoLINES(sstr); | |
10946 | IoPAGE(dstr) = IoPAGE(sstr); | |
10947 | IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr); | |
10948 | IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr); | |
7a5fa8a2 | 10949 | if(IoFLAGS(sstr) & IOf_FAKE_DIRP) { |
5a37521b AB |
10950 | /* I have no idea why fake dirp (rsfps) |
10951 | should be treaded differently but otherwise | |
10952 | we end up with leaks -- sky*/ | |
10953 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(sstr), param); | |
10954 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(sstr), param); | |
10955 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(sstr), param); | |
10956 | } else { | |
10957 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr), param); | |
10958 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr), param); | |
10959 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr), param); | |
10960 | } | |
1d7c1841 | 10961 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr)); |
1d7c1841 | 10962 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr)); |
1d7c1841 | 10963 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr)); |
1d7c1841 GS |
10964 | IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr); |
10965 | IoTYPE(dstr) = IoTYPE(sstr); | |
10966 | IoFLAGS(dstr) = IoFLAGS(sstr); | |
10967 | break; | |
10968 | case SVt_PVAV: | |
10969 | SvANY(dstr) = new_XPVAV(); | |
b162af07 SP |
10970 | SvCUR_set(dstr, SvCUR(sstr)); |
10971 | SvLEN_set(dstr, SvLEN(sstr)); | |
b162af07 SP |
10972 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
10973 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
1d7c1841 GS |
10974 | if (AvARRAY((AV*)sstr)) { |
10975 | SV **dst_ary, **src_ary; | |
10976 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10977 | ||
10978 | src_ary = AvARRAY((AV*)sstr); | |
10979 | Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*); | |
10980 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); | |
f880fe2f | 10981 | SvPV_set(dstr, (char*)dst_ary); |
1d7c1841 GS |
10982 | AvALLOC((AV*)dstr) = dst_ary; |
10983 | if (AvREAL((AV*)sstr)) { | |
10984 | while (items-- > 0) | |
d2d73c3e | 10985 | *dst_ary++ = sv_dup_inc(*src_ary++, param); |
1d7c1841 GS |
10986 | } |
10987 | else { | |
10988 | while (items-- > 0) | |
d2d73c3e | 10989 | *dst_ary++ = sv_dup(*src_ary++, param); |
1d7c1841 GS |
10990 | } |
10991 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10992 | while (items-- > 0) { | |
10993 | *dst_ary++ = &PL_sv_undef; | |
10994 | } | |
10995 | } | |
10996 | else { | |
f880fe2f | 10997 | SvPV_set(dstr, Nullch); |
1d7c1841 GS |
10998 | AvALLOC((AV*)dstr) = (SV**)NULL; |
10999 | } | |
11000 | break; | |
11001 | case SVt_PVHV: | |
11002 | SvANY(dstr) = new_XPVHV(); | |
b162af07 SP |
11003 | SvCUR_set(dstr, SvCUR(sstr)); |
11004 | SvLEN_set(dstr, SvLEN(sstr)); | |
94a66813 | 11005 | HvTOTALKEYS(dstr) = HvTOTALKEYS(sstr); |
b162af07 SP |
11006 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
11007 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
bfcb3514 | 11008 | { |
7423f6db | 11009 | HEK *hvname = 0; |
bfcb3514 | 11010 | |
bfcb3514 NC |
11011 | if (HvARRAY((HV*)sstr)) { |
11012 | STRLEN i = 0; | |
616d8c9c AL |
11013 | const bool sharekeys = !!HvSHAREKEYS(sstr); |
11014 | XPVHV * const dxhv = (XPVHV*)SvANY(dstr); | |
11015 | XPVHV * const sxhv = (XPVHV*)SvANY(sstr); | |
7b2c381c | 11016 | char *darray; |
a1cfa1c6 | 11017 | New(0, darray, |
b79f7545 NC |
11018 | PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1) |
11019 | + (SvOOK(sstr) ? sizeof(struct xpvhv_aux) : 0), char); | |
7b2c381c | 11020 | HvARRAY(dstr) = (HE**)darray; |
bfcb3514 | 11021 | while (i <= sxhv->xhv_max) { |
a1cfa1c6 | 11022 | HE *source = HvARRAY(sstr)[i]; |
7b2c381c | 11023 | HvARRAY(dstr)[i] |
a1cfa1c6 | 11024 | = source ? he_dup(source, sharekeys, param) : 0; |
bfcb3514 NC |
11025 | ++i; |
11026 | } | |
b79f7545 NC |
11027 | if (SvOOK(sstr)) { |
11028 | struct xpvhv_aux *saux = HvAUX(sstr); | |
11029 | struct xpvhv_aux *daux = HvAUX(dstr); | |
11030 | /* This flag isn't copied. */ | |
11031 | /* SvOOK_on(hv) attacks the IV flags. */ | |
11032 | SvFLAGS(dstr) |= SVf_OOK; | |
11033 | ||
11034 | hvname = saux->xhv_name; | |
11035 | daux->xhv_name = hvname ? hek_dup(hvname, param) : hvname; | |
11036 | ||
11037 | daux->xhv_riter = saux->xhv_riter; | |
11038 | daux->xhv_eiter = saux->xhv_eiter | |
11039 | ? he_dup(saux->xhv_eiter, (bool)!!HvSHAREKEYS(sstr), | |
11040 | param) : 0; | |
11041 | } | |
bfcb3514 NC |
11042 | } |
11043 | else { | |
11044 | SvPV_set(dstr, Nullch); | |
bfcb3514 NC |
11045 | } |
11046 | /* Record stashes for possible cloning in Perl_clone(). */ | |
11047 | if(hvname) | |
11048 | av_push(param->stashes, dstr); | |
1d7c1841 | 11049 | } |
1d7c1841 GS |
11050 | break; |
11051 | case SVt_PVFM: | |
11052 | SvANY(dstr) = new_XPVFM(); | |
11053 | FmLINES(dstr) = FmLINES(sstr); | |
11054 | goto dup_pvcv; | |
11055 | /* NOTREACHED */ | |
11056 | case SVt_PVCV: | |
11057 | SvANY(dstr) = new_XPVCV(); | |
d2d73c3e | 11058 | dup_pvcv: |
b162af07 SP |
11059 | SvCUR_set(dstr, SvCUR(sstr)); |
11060 | SvLEN_set(dstr, SvLEN(sstr)); | |
45977657 | 11061 | SvIV_set(dstr, SvIVX(sstr)); |
9d6ce603 | 11062 | SvNV_set(dstr, SvNVX(sstr)); |
b162af07 SP |
11063 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param)); |
11064 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param)); | |
83841fad | 11065 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
d2d73c3e | 11066 | CvSTASH(dstr) = hv_dup(CvSTASH(sstr), param); /* NOTE: not refcounted */ |
1d7c1841 | 11067 | CvSTART(dstr) = CvSTART(sstr); |
b34c0dd4 | 11068 | OP_REFCNT_LOCK; |
1d7c1841 | 11069 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr)); |
b34c0dd4 | 11070 | OP_REFCNT_UNLOCK; |
1d7c1841 GS |
11071 | CvXSUB(dstr) = CvXSUB(sstr); |
11072 | CvXSUBANY(dstr) = CvXSUBANY(sstr); | |
01485f8b DM |
11073 | if (CvCONST(sstr)) { |
11074 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(sstr)) ? | |
11075 | SvREFCNT_inc(CvXSUBANY(sstr).any_ptr) : | |
8f77bfdb | 11076 | sv_dup_inc((SV *)CvXSUBANY(sstr).any_ptr, param); |
01485f8b | 11077 | } |
b23f1a86 DM |
11078 | /* don't dup if copying back - CvGV isn't refcounted, so the |
11079 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
11080 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
11081 | Nullgv : gv_dup(CvGV(sstr), param) ; | |
d2d73c3e AB |
11082 | if (param->flags & CLONEf_COPY_STACKS) { |
11083 | CvDEPTH(dstr) = CvDEPTH(sstr); | |
11084 | } else { | |
11085 | CvDEPTH(dstr) = 0; | |
11086 | } | |
dd2155a4 | 11087 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); |
7dafbf52 DM |
11088 | CvOUTSIDE_SEQ(dstr) = CvOUTSIDE_SEQ(sstr); |
11089 | CvOUTSIDE(dstr) = | |
11090 | CvWEAKOUTSIDE(sstr) | |
11091 | ? cv_dup( CvOUTSIDE(sstr), param) | |
11092 | : cv_dup_inc(CvOUTSIDE(sstr), param); | |
1d7c1841 | 11093 | CvFLAGS(dstr) = CvFLAGS(sstr); |
54356c7d | 11094 | CvFILE(dstr) = CvXSUB(sstr) ? CvFILE(sstr) : SAVEPV(CvFILE(sstr)); |
1d7c1841 GS |
11095 | break; |
11096 | default: | |
c803eecc | 11097 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", (IV)SvTYPE(sstr)); |
1d7c1841 GS |
11098 | break; |
11099 | } | |
11100 | ||
11101 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) | |
11102 | ++PL_sv_objcount; | |
11103 | ||
11104 | return dstr; | |
d2d73c3e | 11105 | } |
1d7c1841 | 11106 | |
645c22ef DM |
11107 | /* duplicate a context */ |
11108 | ||
1d7c1841 | 11109 | PERL_CONTEXT * |
a8fc9800 | 11110 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
11111 | { |
11112 | PERL_CONTEXT *ncxs; | |
11113 | ||
11114 | if (!cxs) | |
11115 | return (PERL_CONTEXT*)NULL; | |
11116 | ||
11117 | /* look for it in the table first */ | |
11118 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
11119 | if (ncxs) | |
11120 | return ncxs; | |
11121 | ||
11122 | /* create anew and remember what it is */ | |
11123 | Newz(56, ncxs, max + 1, PERL_CONTEXT); | |
11124 | ptr_table_store(PL_ptr_table, cxs, ncxs); | |
11125 | ||
11126 | while (ix >= 0) { | |
11127 | PERL_CONTEXT *cx = &cxs[ix]; | |
11128 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
11129 | ncx->cx_type = cx->cx_type; | |
11130 | if (CxTYPE(cx) == CXt_SUBST) { | |
11131 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
11132 | } | |
11133 | else { | |
11134 | ncx->blk_oldsp = cx->blk_oldsp; | |
11135 | ncx->blk_oldcop = cx->blk_oldcop; | |
1d7c1841 GS |
11136 | ncx->blk_oldmarksp = cx->blk_oldmarksp; |
11137 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
11138 | ncx->blk_oldpm = cx->blk_oldpm; | |
11139 | ncx->blk_gimme = cx->blk_gimme; | |
11140 | switch (CxTYPE(cx)) { | |
11141 | case CXt_SUB: | |
11142 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
11143 | ? cv_dup_inc(cx->blk_sub.cv, param) |
11144 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 11145 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 11146 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 11147 | : Nullav); |
d2d73c3e | 11148 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
11149 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
11150 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
11151 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
f39bc417 | 11152 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
11153 | break; |
11154 | case CXt_EVAL: | |
11155 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
11156 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 11157 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 11158 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 11159 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
f39bc417 | 11160 | ncx->blk_eval.retop = cx->blk_eval.retop; |
1d7c1841 GS |
11161 | break; |
11162 | case CXt_LOOP: | |
11163 | ncx->blk_loop.label = cx->blk_loop.label; | |
11164 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
11165 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
11166 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
11167 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
11168 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
11169 | ? cx->blk_loop.iterdata | |
d2d73c3e | 11170 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
11171 | ncx->blk_loop.oldcomppad |
11172 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
11173 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
11174 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
11175 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
11176 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
11177 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
11178 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
11179 | break; | |
11180 | case CXt_FORMAT: | |
d2d73c3e AB |
11181 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
11182 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
11183 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 | 11184 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
f39bc417 | 11185 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
11186 | break; |
11187 | case CXt_BLOCK: | |
11188 | case CXt_NULL: | |
11189 | break; | |
11190 | } | |
11191 | } | |
11192 | --ix; | |
11193 | } | |
11194 | return ncxs; | |
11195 | } | |
11196 | ||
645c22ef DM |
11197 | /* duplicate a stack info structure */ |
11198 | ||
1d7c1841 | 11199 | PERL_SI * |
a8fc9800 | 11200 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
11201 | { |
11202 | PERL_SI *nsi; | |
11203 | ||
11204 | if (!si) | |
11205 | return (PERL_SI*)NULL; | |
11206 | ||
11207 | /* look for it in the table first */ | |
11208 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
11209 | if (nsi) | |
11210 | return nsi; | |
11211 | ||
11212 | /* create anew and remember what it is */ | |
11213 | Newz(56, nsi, 1, PERL_SI); | |
11214 | ptr_table_store(PL_ptr_table, si, nsi); | |
11215 | ||
d2d73c3e | 11216 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
11217 | nsi->si_cxix = si->si_cxix; |
11218 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 11219 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 11220 | nsi->si_type = si->si_type; |
d2d73c3e AB |
11221 | nsi->si_prev = si_dup(si->si_prev, param); |
11222 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
11223 | nsi->si_markoff = si->si_markoff; |
11224 | ||
11225 | return nsi; | |
11226 | } | |
11227 | ||
11228 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
11229 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
11230 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
11231 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
11232 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
11233 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
11234 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
11235 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
11236 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
11237 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
11238 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
11239 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
11240 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
11241 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
11242 | ||
11243 | /* XXXXX todo */ | |
11244 | #define pv_dup_inc(p) SAVEPV(p) | |
11245 | #define pv_dup(p) SAVEPV(p) | |
11246 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
11247 | ||
645c22ef DM |
11248 | /* map any object to the new equivent - either something in the |
11249 | * ptr table, or something in the interpreter structure | |
11250 | */ | |
11251 | ||
1d7c1841 GS |
11252 | void * |
11253 | Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl) | |
11254 | { | |
11255 | void *ret; | |
11256 | ||
11257 | if (!v) | |
11258 | return (void*)NULL; | |
11259 | ||
11260 | /* look for it in the table first */ | |
11261 | ret = ptr_table_fetch(PL_ptr_table, v); | |
11262 | if (ret) | |
11263 | return ret; | |
11264 | ||
11265 | /* see if it is part of the interpreter structure */ | |
11266 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 11267 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 11268 | else { |
1d7c1841 | 11269 | ret = v; |
05ec9bb3 | 11270 | } |
1d7c1841 GS |
11271 | |
11272 | return ret; | |
11273 | } | |
11274 | ||
645c22ef DM |
11275 | /* duplicate the save stack */ |
11276 | ||
1d7c1841 | 11277 | ANY * |
a8fc9800 | 11278 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 GS |
11279 | { |
11280 | ANY *ss = proto_perl->Tsavestack; | |
11281 | I32 ix = proto_perl->Tsavestack_ix; | |
11282 | I32 max = proto_perl->Tsavestack_max; | |
11283 | ANY *nss; | |
11284 | SV *sv; | |
11285 | GV *gv; | |
11286 | AV *av; | |
11287 | HV *hv; | |
11288 | void* ptr; | |
11289 | int intval; | |
11290 | long longval; | |
11291 | GP *gp; | |
11292 | IV iv; | |
c4e33207 | 11293 | char *c = NULL; |
1d7c1841 | 11294 | void (*dptr) (void*); |
acfe0abc | 11295 | void (*dxptr) (pTHX_ void*); |
e977893f | 11296 | OP *o; |
3c0f78ca JH |
11297 | /* Unions for circumventing strict ANSI C89 casting rules. */ |
11298 | union { void *vptr; void (*dptr)(void*); } u1, u2; | |
11299 | union { void *vptr; void (*dxptr)(pTHX_ void*); } u3, u4; | |
1d7c1841 GS |
11300 | |
11301 | Newz(54, nss, max, ANY); | |
11302 | ||
11303 | while (ix > 0) { | |
b464bac0 | 11304 | I32 i = POPINT(ss,ix); |
1d7c1841 GS |
11305 | TOPINT(nss,ix) = i; |
11306 | switch (i) { | |
11307 | case SAVEt_ITEM: /* normal string */ | |
11308 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11309 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11310 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11311 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11312 | break; |
11313 | case SAVEt_SV: /* scalar reference */ | |
11314 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11315 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11316 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11317 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 11318 | break; |
f4dd75d9 GS |
11319 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
11320 | c = (char*)POPPTR(ss,ix); | |
11321 | TOPPTR(nss,ix) = pv_dup(c); | |
11322 | ptr = POPPTR(ss,ix); | |
11323 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11324 | break; | |
05ec9bb3 NIS |
11325 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
11326 | c = (char*)POPPTR(ss,ix); | |
11327 | TOPPTR(nss,ix) = savesharedpv(c); | |
11328 | ptr = POPPTR(ss,ix); | |
11329 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11330 | break; | |
1d7c1841 GS |
11331 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
11332 | case SAVEt_SVREF: /* scalar reference */ | |
11333 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11334 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11335 | ptr = POPPTR(ss,ix); |
11336 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
11337 | break; | |
11338 | case SAVEt_AV: /* array reference */ | |
11339 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11340 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 11341 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11342 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11343 | break; |
11344 | case SAVEt_HV: /* hash reference */ | |
11345 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11346 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 11347 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 11348 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11349 | break; |
11350 | case SAVEt_INT: /* int reference */ | |
11351 | ptr = POPPTR(ss,ix); | |
11352 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11353 | intval = (int)POPINT(ss,ix); | |
11354 | TOPINT(nss,ix) = intval; | |
11355 | break; | |
11356 | case SAVEt_LONG: /* long reference */ | |
11357 | ptr = POPPTR(ss,ix); | |
11358 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11359 | longval = (long)POPLONG(ss,ix); | |
11360 | TOPLONG(nss,ix) = longval; | |
11361 | break; | |
11362 | case SAVEt_I32: /* I32 reference */ | |
11363 | case SAVEt_I16: /* I16 reference */ | |
11364 | case SAVEt_I8: /* I8 reference */ | |
11365 | ptr = POPPTR(ss,ix); | |
11366 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11367 | i = POPINT(ss,ix); | |
11368 | TOPINT(nss,ix) = i; | |
11369 | break; | |
11370 | case SAVEt_IV: /* IV reference */ | |
11371 | ptr = POPPTR(ss,ix); | |
11372 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11373 | iv = POPIV(ss,ix); | |
11374 | TOPIV(nss,ix) = iv; | |
11375 | break; | |
11376 | case SAVEt_SPTR: /* SV* reference */ | |
11377 | ptr = POPPTR(ss,ix); | |
11378 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11379 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11380 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
11381 | break; |
11382 | case SAVEt_VPTR: /* random* reference */ | |
11383 | ptr = POPPTR(ss,ix); | |
11384 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11385 | ptr = POPPTR(ss,ix); | |
11386 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11387 | break; | |
11388 | case SAVEt_PPTR: /* char* reference */ | |
11389 | ptr = POPPTR(ss,ix); | |
11390 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11391 | c = (char*)POPPTR(ss,ix); | |
11392 | TOPPTR(nss,ix) = pv_dup(c); | |
11393 | break; | |
11394 | case SAVEt_HPTR: /* HV* reference */ | |
11395 | ptr = POPPTR(ss,ix); | |
11396 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11397 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11398 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
11399 | break; |
11400 | case SAVEt_APTR: /* AV* reference */ | |
11401 | ptr = POPPTR(ss,ix); | |
11402 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11403 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11404 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
11405 | break; |
11406 | case SAVEt_NSTAB: | |
11407 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 11408 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
11409 | break; |
11410 | case SAVEt_GP: /* scalar reference */ | |
11411 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 11412 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
11413 | (void)GpREFCNT_inc(gp); |
11414 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 11415 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
11416 | c = (char*)POPPTR(ss,ix); |
11417 | TOPPTR(nss,ix) = pv_dup(c); | |
11418 | iv = POPIV(ss,ix); | |
11419 | TOPIV(nss,ix) = iv; | |
11420 | iv = POPIV(ss,ix); | |
11421 | TOPIV(nss,ix) = iv; | |
11422 | break; | |
11423 | case SAVEt_FREESV: | |
26d9b02f | 11424 | case SAVEt_MORTALIZESV: |
1d7c1841 | 11425 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11426 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11427 | break; |
11428 | case SAVEt_FREEOP: | |
11429 | ptr = POPPTR(ss,ix); | |
11430 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
11431 | /* these are assumed to be refcounted properly */ | |
11432 | switch (((OP*)ptr)->op_type) { | |
11433 | case OP_LEAVESUB: | |
11434 | case OP_LEAVESUBLV: | |
11435 | case OP_LEAVEEVAL: | |
11436 | case OP_LEAVE: | |
11437 | case OP_SCOPE: | |
11438 | case OP_LEAVEWRITE: | |
e977893f GS |
11439 | TOPPTR(nss,ix) = ptr; |
11440 | o = (OP*)ptr; | |
11441 | OpREFCNT_inc(o); | |
1d7c1841 GS |
11442 | break; |
11443 | default: | |
11444 | TOPPTR(nss,ix) = Nullop; | |
11445 | break; | |
11446 | } | |
11447 | } | |
11448 | else | |
11449 | TOPPTR(nss,ix) = Nullop; | |
11450 | break; | |
11451 | case SAVEt_FREEPV: | |
11452 | c = (char*)POPPTR(ss,ix); | |
11453 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11454 | break; | |
11455 | case SAVEt_CLEARSV: | |
11456 | longval = POPLONG(ss,ix); | |
11457 | TOPLONG(nss,ix) = longval; | |
11458 | break; | |
11459 | case SAVEt_DELETE: | |
11460 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11461 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11462 | c = (char*)POPPTR(ss,ix); |
11463 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11464 | i = POPINT(ss,ix); | |
11465 | TOPINT(nss,ix) = i; | |
11466 | break; | |
11467 | case SAVEt_DESTRUCTOR: | |
11468 | ptr = POPPTR(ss,ix); | |
11469 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11470 | dptr = POPDPTR(ss,ix); | |
3c0f78ca JH |
11471 | u1.dptr = dptr; |
11472 | u2.vptr = any_dup(u1.vptr, proto_perl); | |
11473 | TOPDPTR(nss,ix) = u2.dptr; | |
1d7c1841 GS |
11474 | break; |
11475 | case SAVEt_DESTRUCTOR_X: | |
11476 | ptr = POPPTR(ss,ix); | |
11477 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11478 | dxptr = POPDXPTR(ss,ix); | |
3c0f78ca JH |
11479 | u3.dxptr = dxptr; |
11480 | u4.vptr = any_dup(u3.vptr, proto_perl);; | |
11481 | TOPDXPTR(nss,ix) = u4.dxptr; | |
1d7c1841 GS |
11482 | break; |
11483 | case SAVEt_REGCONTEXT: | |
11484 | case SAVEt_ALLOC: | |
11485 | i = POPINT(ss,ix); | |
11486 | TOPINT(nss,ix) = i; | |
11487 | ix -= i; | |
11488 | break; | |
11489 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
11490 | i = POPINT(ss,ix); | |
11491 | TOPINT(nss,ix) = i; | |
11492 | break; | |
11493 | case SAVEt_AELEM: /* array element */ | |
11494 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11495 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11496 | i = POPINT(ss,ix); |
11497 | TOPINT(nss,ix) = i; | |
11498 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11499 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
11500 | break; |
11501 | case SAVEt_HELEM: /* hash element */ | |
11502 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11503 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11504 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11505 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11506 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 11507 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11508 | break; |
11509 | case SAVEt_OP: | |
11510 | ptr = POPPTR(ss,ix); | |
11511 | TOPPTR(nss,ix) = ptr; | |
11512 | break; | |
11513 | case SAVEt_HINTS: | |
11514 | i = POPINT(ss,ix); | |
11515 | TOPINT(nss,ix) = i; | |
11516 | break; | |
c4410b1b GS |
11517 | case SAVEt_COMPPAD: |
11518 | av = (AV*)POPPTR(ss,ix); | |
58ed4fbe | 11519 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 11520 | break; |
c3564e5c GS |
11521 | case SAVEt_PADSV: |
11522 | longval = (long)POPLONG(ss,ix); | |
11523 | TOPLONG(nss,ix) = longval; | |
11524 | ptr = POPPTR(ss,ix); | |
11525 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11526 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11527 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 11528 | break; |
a1bb4754 | 11529 | case SAVEt_BOOL: |
38d8b13e | 11530 | ptr = POPPTR(ss,ix); |
b9609c01 | 11531 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 11532 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 11533 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 11534 | break; |
8bd2680e MHM |
11535 | case SAVEt_SET_SVFLAGS: |
11536 | i = POPINT(ss,ix); | |
11537 | TOPINT(nss,ix) = i; | |
11538 | i = POPINT(ss,ix); | |
11539 | TOPINT(nss,ix) = i; | |
11540 | sv = (SV*)POPPTR(ss,ix); | |
11541 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
11542 | break; | |
1d7c1841 GS |
11543 | default: |
11544 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
11545 | } | |
11546 | } | |
11547 | ||
11548 | return nss; | |
11549 | } | |
11550 | ||
9660f481 DM |
11551 | |
11552 | /* if sv is a stash, call $class->CLONE_SKIP(), and set the SVphv_CLONEABLE | |
11553 | * flag to the result. This is done for each stash before cloning starts, | |
11554 | * so we know which stashes want their objects cloned */ | |
11555 | ||
11556 | static void | |
11557 | do_mark_cloneable_stash(pTHX_ SV *sv) | |
11558 | { | |
84bda14a | 11559 | const HEK *hvname = HvNAME_HEK((HV*)sv); |
bfcb3514 | 11560 | if (hvname) { |
9660f481 DM |
11561 | GV* cloner = gv_fetchmethod_autoload((HV*)sv, "CLONE_SKIP", 0); |
11562 | SvFLAGS(sv) |= SVphv_CLONEABLE; /* clone objects by default */ | |
11563 | if (cloner && GvCV(cloner)) { | |
11564 | dSP; | |
11565 | UV status; | |
11566 | ||
11567 | ENTER; | |
11568 | SAVETMPS; | |
11569 | PUSHMARK(SP); | |
84bda14a | 11570 | XPUSHs(sv_2mortal(newSVhek(hvname))); |
9660f481 DM |
11571 | PUTBACK; |
11572 | call_sv((SV*)GvCV(cloner), G_SCALAR); | |
11573 | SPAGAIN; | |
11574 | status = POPu; | |
11575 | PUTBACK; | |
11576 | FREETMPS; | |
11577 | LEAVE; | |
11578 | if (status) | |
11579 | SvFLAGS(sv) &= ~SVphv_CLONEABLE; | |
11580 | } | |
11581 | } | |
11582 | } | |
11583 | ||
11584 | ||
11585 | ||
645c22ef DM |
11586 | /* |
11587 | =for apidoc perl_clone | |
11588 | ||
11589 | Create and return a new interpreter by cloning the current one. | |
11590 | ||
4be49ee6 | 11591 | perl_clone takes these flags as parameters: |
6a78b4db | 11592 | |
7a5fa8a2 NIS |
11593 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, |
11594 | without it we only clone the data and zero the stacks, | |
11595 | with it we copy the stacks and the new perl interpreter is | |
11596 | ready to run at the exact same point as the previous one. | |
11597 | The pseudo-fork code uses COPY_STACKS while the | |
6a78b4db AB |
11598 | threads->new doesn't. |
11599 | ||
11600 | CLONEf_KEEP_PTR_TABLE | |
7a5fa8a2 NIS |
11601 | perl_clone keeps a ptr_table with the pointer of the old |
11602 | variable as a key and the new variable as a value, | |
11603 | this allows it to check if something has been cloned and not | |
11604 | clone it again but rather just use the value and increase the | |
11605 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
11606 | the ptr_table using the function | |
11607 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
11608 | reason to keep it around is if you want to dup some of your own | |
11609 | variable who are outside the graph perl scans, example of this | |
6a78b4db AB |
11610 | code is in threads.xs create |
11611 | ||
11612 | CLONEf_CLONE_HOST | |
7a5fa8a2 NIS |
11613 | This is a win32 thing, it is ignored on unix, it tells perls |
11614 | win32host code (which is c++) to clone itself, this is needed on | |
11615 | win32 if you want to run two threads at the same time, | |
11616 | if you just want to do some stuff in a separate perl interpreter | |
11617 | and then throw it away and return to the original one, | |
6a78b4db AB |
11618 | you don't need to do anything. |
11619 | ||
645c22ef DM |
11620 | =cut |
11621 | */ | |
11622 | ||
11623 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
11624 | EXTERN_C PerlInterpreter * |
11625 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 11626 | |
1d7c1841 GS |
11627 | PerlInterpreter * |
11628 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
11629 | { | |
27da23d5 | 11630 | dVAR; |
1d7c1841 | 11631 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
11632 | |
11633 | /* perlhost.h so we need to call into it | |
11634 | to clone the host, CPerlHost should have a c interface, sky */ | |
11635 | ||
11636 | if (flags & CLONEf_CLONE_HOST) { | |
11637 | return perl_clone_host(proto_perl,flags); | |
11638 | } | |
11639 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
11640 | proto_perl->IMem, |
11641 | proto_perl->IMemShared, | |
11642 | proto_perl->IMemParse, | |
11643 | proto_perl->IEnv, | |
11644 | proto_perl->IStdIO, | |
11645 | proto_perl->ILIO, | |
11646 | proto_perl->IDir, | |
11647 | proto_perl->ISock, | |
11648 | proto_perl->IProc); | |
11649 | } | |
11650 | ||
11651 | PerlInterpreter * | |
11652 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
11653 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
11654 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
11655 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
11656 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
11657 | struct IPerlProc* ipP) | |
11658 | { | |
11659 | /* XXX many of the string copies here can be optimized if they're | |
11660 | * constants; they need to be allocated as common memory and just | |
11661 | * their pointers copied. */ | |
11662 | ||
8fc9efbd | 11663 | IV i; |
64aa0685 GS |
11664 | CLONE_PARAMS clone_params; |
11665 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 11666 | |
1d7c1841 | 11667 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
9660f481 DM |
11668 | /* for each stash, determine whether its objects should be cloned */ |
11669 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 11670 | PERL_SET_THX(my_perl); |
1d7c1841 | 11671 | |
acfe0abc | 11672 | # ifdef DEBUGGING |
a4530404 | 11673 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11674 | PL_op = Nullop; |
c008732b | 11675 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11676 | PL_markstack = 0; |
11677 | PL_scopestack = 0; | |
11678 | PL_savestack = 0; | |
22f7c9c9 JH |
11679 | PL_savestack_ix = 0; |
11680 | PL_savestack_max = -1; | |
66fe0623 | 11681 | PL_sig_pending = 0; |
25596c82 | 11682 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 11683 | # else /* !DEBUGGING */ |
1d7c1841 | 11684 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 11685 | # endif /* DEBUGGING */ |
1d7c1841 GS |
11686 | |
11687 | /* host pointers */ | |
11688 | PL_Mem = ipM; | |
11689 | PL_MemShared = ipMS; | |
11690 | PL_MemParse = ipMP; | |
11691 | PL_Env = ipE; | |
11692 | PL_StdIO = ipStd; | |
11693 | PL_LIO = ipLIO; | |
11694 | PL_Dir = ipD; | |
11695 | PL_Sock = ipS; | |
11696 | PL_Proc = ipP; | |
1d7c1841 GS |
11697 | #else /* !PERL_IMPLICIT_SYS */ |
11698 | IV i; | |
64aa0685 GS |
11699 | CLONE_PARAMS clone_params; |
11700 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 11701 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
9660f481 DM |
11702 | /* for each stash, determine whether its objects should be cloned */ |
11703 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 11704 | PERL_SET_THX(my_perl); |
1d7c1841 GS |
11705 | |
11706 | # ifdef DEBUGGING | |
a4530404 | 11707 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11708 | PL_op = Nullop; |
c008732b | 11709 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11710 | PL_markstack = 0; |
11711 | PL_scopestack = 0; | |
11712 | PL_savestack = 0; | |
22f7c9c9 JH |
11713 | PL_savestack_ix = 0; |
11714 | PL_savestack_max = -1; | |
66fe0623 | 11715 | PL_sig_pending = 0; |
25596c82 | 11716 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
11717 | # else /* !DEBUGGING */ |
11718 | Zero(my_perl, 1, PerlInterpreter); | |
11719 | # endif /* DEBUGGING */ | |
11720 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 11721 | param->flags = flags; |
59b40662 | 11722 | param->proto_perl = proto_perl; |
1d7c1841 GS |
11723 | |
11724 | /* arena roots */ | |
612f20c3 | 11725 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 11726 | PL_xnv_root = NULL; |
612f20c3 | 11727 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 11728 | PL_xpv_root = NULL; |
612f20c3 | 11729 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 11730 | PL_xpviv_root = NULL; |
612f20c3 | 11731 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 11732 | PL_xpvnv_root = NULL; |
612f20c3 | 11733 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 11734 | PL_xpvcv_root = NULL; |
612f20c3 | 11735 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 11736 | PL_xpvav_root = NULL; |
612f20c3 | 11737 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 11738 | PL_xpvhv_root = NULL; |
612f20c3 | 11739 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 11740 | PL_xpvmg_root = NULL; |
7552b40b DM |
11741 | PL_xpvgv_arenaroot = NULL; |
11742 | PL_xpvgv_root = NULL; | |
612f20c3 | 11743 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 11744 | PL_xpvlv_root = NULL; |
612f20c3 | 11745 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 11746 | PL_xpvbm_root = NULL; |
612f20c3 | 11747 | PL_he_arenaroot = NULL; |
1d7c1841 | 11748 | PL_he_root = NULL; |
892b45be | 11749 | #if defined(USE_ITHREADS) |
32e691d0 NC |
11750 | PL_pte_arenaroot = NULL; |
11751 | PL_pte_root = NULL; | |
892b45be | 11752 | #endif |
1d7c1841 GS |
11753 | PL_nice_chunk = NULL; |
11754 | PL_nice_chunk_size = 0; | |
11755 | PL_sv_count = 0; | |
11756 | PL_sv_objcount = 0; | |
11757 | PL_sv_root = Nullsv; | |
11758 | PL_sv_arenaroot = Nullsv; | |
11759 | ||
11760 | PL_debug = proto_perl->Idebug; | |
11761 | ||
8df990a8 NC |
11762 | PL_hash_seed = proto_perl->Ihash_seed; |
11763 | PL_rehash_seed = proto_perl->Irehash_seed; | |
11764 | ||
e5dd39fc | 11765 | #ifdef USE_REENTRANT_API |
68853529 SB |
11766 | /* XXX: things like -Dm will segfault here in perlio, but doing |
11767 | * PERL_SET_CONTEXT(proto_perl); | |
11768 | * breaks too many other things | |
11769 | */ | |
59bd0823 | 11770 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
11771 | #endif |
11772 | ||
1d7c1841 GS |
11773 | /* create SV map for pointer relocation */ |
11774 | PL_ptr_table = ptr_table_new(); | |
c21d1a0f NC |
11775 | /* and one for finding shared hash keys quickly */ |
11776 | PL_shared_hek_table = ptr_table_new(); | |
1d7c1841 GS |
11777 | |
11778 | /* initialize these special pointers as early as possible */ | |
11779 | SvANY(&PL_sv_undef) = NULL; | |
11780 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
11781 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
11782 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
11783 | ||
1d7c1841 | 11784 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 | 11785 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
0309f36e NC |
11786 | SvFLAGS(&PL_sv_no) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11787 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 11788 | SvPV_set(&PL_sv_no, SAVEPVN(PL_No, 0)); |
b162af07 SP |
11789 | SvCUR_set(&PL_sv_no, 0); |
11790 | SvLEN_set(&PL_sv_no, 1); | |
45977657 | 11791 | SvIV_set(&PL_sv_no, 0); |
9d6ce603 | 11792 | SvNV_set(&PL_sv_no, 0); |
1d7c1841 GS |
11793 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); |
11794 | ||
1d7c1841 | 11795 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 | 11796 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
0309f36e NC |
11797 | SvFLAGS(&PL_sv_yes) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11798 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 11799 | SvPV_set(&PL_sv_yes, SAVEPVN(PL_Yes, 1)); |
b162af07 SP |
11800 | SvCUR_set(&PL_sv_yes, 1); |
11801 | SvLEN_set(&PL_sv_yes, 2); | |
45977657 | 11802 | SvIV_set(&PL_sv_yes, 1); |
9d6ce603 | 11803 | SvNV_set(&PL_sv_yes, 1); |
1d7c1841 GS |
11804 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); |
11805 | ||
05ec9bb3 | 11806 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
11807 | PL_strtab = newHV(); |
11808 | HvSHAREKEYS_off(PL_strtab); | |
c4a9c09d | 11809 | hv_ksplit(PL_strtab, HvTOTALKEYS(proto_perl->Istrtab)); |
1d7c1841 GS |
11810 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); |
11811 | ||
05ec9bb3 NIS |
11812 | PL_compiling = proto_perl->Icompiling; |
11813 | ||
11814 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
11815 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
11816 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
11817 | ||
11818 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
11819 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
11820 | ||
1d7c1841 GS |
11821 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
11822 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 11823 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 11824 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 11825 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
11826 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
11827 | ||
11828 | /* pseudo environmental stuff */ | |
11829 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 11830 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 11831 | |
d2d73c3e AB |
11832 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
11833 | ||
a1ea730d | 11834 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
11835 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
11836 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 11837 | #endif |
d2d73c3e AB |
11838 | |
11839 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
11840 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
11841 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 11842 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
11843 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
11844 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
11845 | |
11846 | /* switches */ | |
11847 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 11848 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
11849 | PL_localpatches = proto_perl->Ilocalpatches; |
11850 | PL_splitstr = proto_perl->Isplitstr; | |
11851 | PL_preprocess = proto_perl->Ipreprocess; | |
11852 | PL_minus_n = proto_perl->Iminus_n; | |
11853 | PL_minus_p = proto_perl->Iminus_p; | |
11854 | PL_minus_l = proto_perl->Iminus_l; | |
11855 | PL_minus_a = proto_perl->Iminus_a; | |
11856 | PL_minus_F = proto_perl->Iminus_F; | |
11857 | PL_doswitches = proto_perl->Idoswitches; | |
11858 | PL_dowarn = proto_perl->Idowarn; | |
11859 | PL_doextract = proto_perl->Idoextract; | |
11860 | PL_sawampersand = proto_perl->Isawampersand; | |
11861 | PL_unsafe = proto_perl->Iunsafe; | |
11862 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 11863 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
11864 | PL_perldb = proto_perl->Iperldb; |
11865 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 11866 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
11867 | |
11868 | /* magical thingies */ | |
11869 | /* XXX time(&PL_basetime) when asked for? */ | |
11870 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 11871 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
11872 | |
11873 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
11874 | PL_multiline = proto_perl->Imultiline; | |
11875 | PL_statusvalue = proto_perl->Istatusvalue; | |
11876 | #ifdef VMS | |
11877 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
11878 | #endif | |
0a378802 | 11879 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 11880 | |
4a4c6fe3 | 11881 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
11882 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
11883 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 11884 | |
d2f185dc AMS |
11885 | /* Clone the regex array */ |
11886 | PL_regex_padav = newAV(); | |
11887 | { | |
a3b680e6 | 11888 | const I32 len = av_len((AV*)proto_perl->Iregex_padav); |
d2f185dc | 11889 | SV** regexen = AvARRAY((AV*)proto_perl->Iregex_padav); |
b464bac0 | 11890 | IV i; |
0f95fc41 AB |
11891 | av_push(PL_regex_padav, |
11892 | sv_dup_inc(regexen[0],param)); | |
11893 | for(i = 1; i <= len; i++) { | |
11894 | if(SvREPADTMP(regexen[i])) { | |
11895 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 11896 | } else { |
0f95fc41 AB |
11897 | av_push(PL_regex_padav, |
11898 | SvREFCNT_inc( | |
8cf8f3d1 | 11899 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 11900 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
11901 | )); |
11902 | } | |
d2f185dc AMS |
11903 | } |
11904 | } | |
11905 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 11906 | |
1d7c1841 | 11907 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
11908 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
11909 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11910 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11911 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11912 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11913 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
11914 | |
11915 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 11916 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
11917 | |
11918 | /* shortcuts to misc objects */ | |
d2d73c3e | 11919 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
11920 | |
11921 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
11922 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
11923 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11924 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11925 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11926 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11927 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 11928 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
11929 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
11930 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
11931 | |
11932 | /* symbol tables */ | |
d2d73c3e AB |
11933 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
11934 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
11935 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
11936 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11937 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11938 | ||
11939 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 11940 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 11941 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
11942 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11943 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11944 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
11945 | |
11946 | PL_sub_generation = proto_perl->Isub_generation; | |
11947 | ||
11948 | /* funky return mechanisms */ | |
11949 | PL_forkprocess = proto_perl->Iforkprocess; | |
11950 | ||
11951 | /* subprocess state */ | |
d2d73c3e | 11952 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
11953 | |
11954 | /* internal state */ | |
11955 | PL_tainting = proto_perl->Itainting; | |
7135f00b | 11956 | PL_taint_warn = proto_perl->Itaint_warn; |
1d7c1841 GS |
11957 | PL_maxo = proto_perl->Imaxo; |
11958 | if (proto_perl->Iop_mask) | |
11959 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11960 | else | |
11961 | PL_op_mask = Nullch; | |
06492da6 | 11962 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
11963 | |
11964 | /* current interpreter roots */ | |
d2d73c3e | 11965 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
11966 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
11967 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 11968 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
11969 | PL_eval_start = proto_perl->Ieval_start; |
11970 | ||
11971 | /* runtime control stuff */ | |
11972 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11973 | PL_copline = proto_perl->Icopline; | |
11974 | ||
11975 | PL_filemode = proto_perl->Ifilemode; | |
11976 | PL_lastfd = proto_perl->Ilastfd; | |
11977 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11978 | PL_Argv = NULL; | |
11979 | PL_Cmd = Nullch; | |
11980 | PL_gensym = proto_perl->Igensym; | |
11981 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 11982 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
11983 | PL_laststatval = proto_perl->Ilaststatval; |
11984 | PL_laststype = proto_perl->Ilaststype; | |
11985 | PL_mess_sv = Nullsv; | |
11986 | ||
d2d73c3e | 11987 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
11988 | PL_ofmt = SAVEPV(proto_perl->Iofmt); |
11989 | ||
11990 | /* interpreter atexit processing */ | |
11991 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11992 | if (PL_exitlistlen) { | |
11993 | New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11994 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11995 | } | |
11996 | else | |
11997 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 11998 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
11999 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
12000 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
12001 | |
12002 | PL_profiledata = NULL; | |
a8fc9800 | 12003 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 12004 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 12005 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 12006 | |
d2d73c3e | 12007 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
12008 | |
12009 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
12010 | |
12011 | #ifdef HAVE_INTERP_INTERN | |
12012 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
12013 | #endif | |
12014 | ||
12015 | /* more statics moved here */ | |
12016 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 12017 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
12018 | |
12019 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
12020 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
12021 | ||
12022 | PL_uid = proto_perl->Iuid; | |
12023 | PL_euid = proto_perl->Ieuid; | |
12024 | PL_gid = proto_perl->Igid; | |
12025 | PL_egid = proto_perl->Iegid; | |
12026 | PL_nomemok = proto_perl->Inomemok; | |
12027 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
12028 | PL_evalseq = proto_perl->Ievalseq; |
12029 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
12030 | PL_origalen = proto_perl->Iorigalen; | |
12031 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
12032 | PL_osname = SAVEPV(proto_perl->Iosname); | |
5c728af0 | 12033 | PL_sh_path_compat = proto_perl->Ish_path_compat; /* XXX never deallocated */ |
1d7c1841 GS |
12034 | PL_sighandlerp = proto_perl->Isighandlerp; |
12035 | ||
12036 | ||
12037 | PL_runops = proto_perl->Irunops; | |
12038 | ||
12039 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
12040 | ||
12041 | #ifdef CSH | |
12042 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 12043 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
12044 | #endif |
12045 | ||
12046 | PL_lex_state = proto_perl->Ilex_state; | |
12047 | PL_lex_defer = proto_perl->Ilex_defer; | |
12048 | PL_lex_expect = proto_perl->Ilex_expect; | |
12049 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
12050 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
12051 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
12052 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
12053 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
12054 | PL_lex_op = proto_perl->Ilex_op; |
12055 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
12056 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
12057 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
12058 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
12059 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
12060 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
12061 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
12062 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
12063 | ||
12064 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
12065 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
12066 | PL_nexttoke = proto_perl->Inexttoke; | |
12067 | ||
1d773130 TB |
12068 | /* XXX This is probably masking the deeper issue of why |
12069 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
12070 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
12071 | * (A little debugging with a watchpoint on it may help.) | |
12072 | */ | |
389edf32 TB |
12073 | if (SvANY(proto_perl->Ilinestr)) { |
12074 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
3f7c398e | 12075 | i = proto_perl->Ibufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 12076 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 12077 | i = proto_perl->Ioldbufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 12078 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 12079 | i = proto_perl->Ioldoldbufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 12080 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 12081 | i = proto_perl->Ilinestart - SvPVX_const(proto_perl->Ilinestr); |
389edf32 TB |
12082 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
12083 | } | |
12084 | else { | |
12085 | PL_linestr = NEWSV(65,79); | |
12086 | sv_upgrade(PL_linestr,SVt_PVIV); | |
12087 | sv_setpvn(PL_linestr,"",0); | |
12088 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
12089 | } | |
1d7c1841 | 12090 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
12091 | PL_pending_ident = proto_perl->Ipending_ident; |
12092 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
12093 | ||
12094 | PL_expect = proto_perl->Iexpect; | |
12095 | ||
12096 | PL_multi_start = proto_perl->Imulti_start; | |
12097 | PL_multi_end = proto_perl->Imulti_end; | |
12098 | PL_multi_open = proto_perl->Imulti_open; | |
12099 | PL_multi_close = proto_perl->Imulti_close; | |
12100 | ||
12101 | PL_error_count = proto_perl->Ierror_count; | |
12102 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 12103 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 12104 | |
1d773130 | 12105 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 | 12106 | if (SvANY(proto_perl->Ilinestr)) { |
3f7c398e | 12107 | i = proto_perl->Ilast_uni - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 12108 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 12109 | i = proto_perl->Ilast_lop - SvPVX_const(proto_perl->Ilinestr); |
389edf32 TB |
12110 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
12111 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
12112 | } | |
12113 | else { | |
12114 | PL_last_uni = SvPVX(PL_linestr); | |
12115 | PL_last_lop = SvPVX(PL_linestr); | |
12116 | PL_last_lop_op = 0; | |
12117 | } | |
1d7c1841 | 12118 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 12119 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
12120 | #ifdef FCRYPT |
12121 | PL_cryptseen = proto_perl->Icryptseen; | |
12122 | #endif | |
12123 | ||
12124 | PL_hints = proto_perl->Ihints; | |
12125 | ||
12126 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
12127 | ||
12128 | #ifdef USE_LOCALE_COLLATE | |
12129 | PL_collation_ix = proto_perl->Icollation_ix; | |
12130 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
12131 | PL_collation_standard = proto_perl->Icollation_standard; | |
12132 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
12133 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
12134 | #endif /* USE_LOCALE_COLLATE */ | |
12135 | ||
12136 | #ifdef USE_LOCALE_NUMERIC | |
12137 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
12138 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
12139 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 12140 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
12141 | #endif /* !USE_LOCALE_NUMERIC */ |
12142 | ||
12143 | /* utf8 character classes */ | |
d2d73c3e AB |
12144 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
12145 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
12146 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
12147 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
12148 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
12149 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
12150 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
12151 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
12152 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
12153 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
12154 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
12155 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
12156 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
12157 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
12158 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
12159 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
12160 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 12161 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
12162 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
12163 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 12164 | |
6c3182a5 | 12165 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 12166 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
12167 | /* Unicode features (see perlrun/-C) */ |
12168 | PL_unicode = proto_perl->Iunicode; | |
12169 | ||
12170 | /* Pre-5.8 signals control */ | |
12171 | PL_signals = proto_perl->Isignals; | |
12172 | ||
12173 | /* times() ticks per second */ | |
12174 | PL_clocktick = proto_perl->Iclocktick; | |
12175 | ||
12176 | /* Recursion stopper for PerlIO_find_layer */ | |
12177 | PL_in_load_module = proto_perl->Iin_load_module; | |
12178 | ||
12179 | /* sort() routine */ | |
12180 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
12181 | ||
57c6e6d2 JH |
12182 | /* Not really needed/useful since the reenrant_retint is "volatile", |
12183 | * but do it for consistency's sake. */ | |
12184 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
12185 | ||
15a5279a JH |
12186 | /* Hooks to shared SVs and locks. */ |
12187 | PL_sharehook = proto_perl->Isharehook; | |
12188 | PL_lockhook = proto_perl->Ilockhook; | |
12189 | PL_unlockhook = proto_perl->Iunlockhook; | |
12190 | PL_threadhook = proto_perl->Ithreadhook; | |
12191 | ||
bce260cd JH |
12192 | PL_runops_std = proto_perl->Irunops_std; |
12193 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
12194 | ||
12195 | #ifdef THREADS_HAVE_PIDS | |
12196 | PL_ppid = proto_perl->Ippid; | |
12197 | #endif | |
12198 | ||
1d7c1841 GS |
12199 | /* swatch cache */ |
12200 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
12201 | PL_last_swash_klen = 0; | |
12202 | PL_last_swash_key[0]= '\0'; | |
12203 | PL_last_swash_tmps = (U8*)NULL; | |
12204 | PL_last_swash_slen = 0; | |
12205 | ||
1d7c1841 GS |
12206 | PL_glob_index = proto_perl->Iglob_index; |
12207 | PL_srand_called = proto_perl->Isrand_called; | |
12208 | PL_uudmap['M'] = 0; /* reinits on demand */ | |
12209 | PL_bitcount = Nullch; /* reinits on demand */ | |
12210 | ||
66fe0623 NIS |
12211 | if (proto_perl->Ipsig_pend) { |
12212 | Newz(0, PL_psig_pend, SIG_SIZE, int); | |
9dd79c3f | 12213 | } |
66fe0623 NIS |
12214 | else { |
12215 | PL_psig_pend = (int*)NULL; | |
12216 | } | |
12217 | ||
1d7c1841 | 12218 | if (proto_perl->Ipsig_ptr) { |
76d3c696 JH |
12219 | Newz(0, PL_psig_ptr, SIG_SIZE, SV*); |
12220 | Newz(0, PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 12221 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
12222 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
12223 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
12224 | } |
12225 | } | |
12226 | else { | |
12227 | PL_psig_ptr = (SV**)NULL; | |
12228 | PL_psig_name = (SV**)NULL; | |
12229 | } | |
12230 | ||
12231 | /* thrdvar.h stuff */ | |
12232 | ||
a0739874 | 12233 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
12234 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
12235 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
12236 | PL_tmps_max = proto_perl->Ttmps_max; | |
12237 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
12238 | Newz(50, PL_tmps_stack, PL_tmps_max, SV*); | |
12239 | i = 0; | |
12240 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 12241 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
12242 | ++i; |
12243 | } | |
12244 | ||
12245 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
12246 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
12247 | Newz(54, PL_markstack, i, I32); | |
12248 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
12249 | - proto_perl->Tmarkstack); | |
12250 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
12251 | - proto_perl->Tmarkstack); | |
12252 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
12253 | PL_markstack_ptr - PL_markstack + 1, I32); | |
12254 | ||
12255 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
12256 | * NOTE: unlike the others! */ | |
12257 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
12258 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
12259 | Newz(54, PL_scopestack, PL_scopestack_max, I32); | |
12260 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
12261 | ||
1d7c1841 | 12262 | /* NOTE: si_dup() looks at PL_markstack */ |
d2d73c3e | 12263 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
12264 | |
12265 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
12266 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
12267 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
12268 | |
12269 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
12270 | PL_stack_base = AvARRAY(PL_curstack); | |
12271 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
12272 | - proto_perl->Tstack_base); | |
12273 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
12274 | ||
12275 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
12276 | * NOTE: unlike the others! */ | |
12277 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
12278 | PL_savestack_max = proto_perl->Tsavestack_max; | |
12279 | /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/ | |
d2d73c3e | 12280 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
12281 | } |
12282 | else { | |
12283 | init_stacks(); | |
985e7056 | 12284 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
12285 | } |
12286 | ||
12287 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
12288 | PL_top_env = &PL_start_env; | |
12289 | ||
12290 | PL_op = proto_perl->Top; | |
12291 | ||
12292 | PL_Sv = Nullsv; | |
12293 | PL_Xpv = (XPV*)NULL; | |
12294 | PL_na = proto_perl->Tna; | |
12295 | ||
12296 | PL_statbuf = proto_perl->Tstatbuf; | |
12297 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
12298 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
12299 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
12300 | #ifdef HAS_TIMES |
12301 | PL_timesbuf = proto_perl->Ttimesbuf; | |
12302 | #endif | |
12303 | ||
12304 | PL_tainted = proto_perl->Ttainted; | |
12305 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
12306 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
12307 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
12308 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
12309 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 12310 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
12311 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
12312 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
12313 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
12314 | |
12315 | PL_restartop = proto_perl->Trestartop; | |
12316 | PL_in_eval = proto_perl->Tin_eval; | |
12317 | PL_delaymagic = proto_perl->Tdelaymagic; | |
12318 | PL_dirty = proto_perl->Tdirty; | |
12319 | PL_localizing = proto_perl->Tlocalizing; | |
12320 | ||
d2d73c3e | 12321 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
dd28f7bb | 12322 | PL_hv_fetch_ent_mh = Nullhe; |
1d7c1841 GS |
12323 | PL_modcount = proto_perl->Tmodcount; |
12324 | PL_lastgotoprobe = Nullop; | |
12325 | PL_dumpindent = proto_perl->Tdumpindent; | |
12326 | ||
12327 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
12328 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
12329 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
12330 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
12331 | PL_sortcxix = proto_perl->Tsortcxix; |
12332 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
12333 | PL_efloatsize = 0; /* reinits on demand */ | |
12334 | ||
12335 | /* regex stuff */ | |
12336 | ||
12337 | PL_screamfirst = NULL; | |
12338 | PL_screamnext = NULL; | |
12339 | PL_maxscream = -1; /* reinits on demand */ | |
12340 | PL_lastscream = Nullsv; | |
12341 | ||
12342 | PL_watchaddr = NULL; | |
12343 | PL_watchok = Nullch; | |
12344 | ||
12345 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
12346 | PL_regprecomp = Nullch; |
12347 | PL_regnpar = 0; | |
12348 | PL_regsize = 0; | |
1d7c1841 GS |
12349 | PL_colorset = 0; /* reinits PL_colors[] */ |
12350 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
12351 | PL_reginput = Nullch; |
12352 | PL_regbol = Nullch; | |
12353 | PL_regeol = Nullch; | |
12354 | PL_regstartp = (I32*)NULL; | |
12355 | PL_regendp = (I32*)NULL; | |
12356 | PL_reglastparen = (U32*)NULL; | |
2d862feb | 12357 | PL_reglastcloseparen = (U32*)NULL; |
1d7c1841 | 12358 | PL_regtill = Nullch; |
1d7c1841 GS |
12359 | PL_reg_start_tmp = (char**)NULL; |
12360 | PL_reg_start_tmpl = 0; | |
12361 | PL_regdata = (struct reg_data*)NULL; | |
12362 | PL_bostr = Nullch; | |
12363 | PL_reg_flags = 0; | |
12364 | PL_reg_eval_set = 0; | |
12365 | PL_regnarrate = 0; | |
12366 | PL_regprogram = (regnode*)NULL; | |
12367 | PL_regindent = 0; | |
12368 | PL_regcc = (CURCUR*)NULL; | |
12369 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
12370 | PL_reg_re = (regexp*)NULL; | |
12371 | PL_reg_ganch = Nullch; | |
12372 | PL_reg_sv = Nullsv; | |
53c4c00c | 12373 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
12374 | PL_reg_magic = (MAGIC*)NULL; |
12375 | PL_reg_oldpos = 0; | |
12376 | PL_reg_oldcurpm = (PMOP*)NULL; | |
12377 | PL_reg_curpm = (PMOP*)NULL; | |
12378 | PL_reg_oldsaved = Nullch; | |
12379 | PL_reg_oldsavedlen = 0; | |
ed252734 | 12380 | #ifdef PERL_COPY_ON_WRITE |
504cff3b | 12381 | PL_nrs = Nullsv; |
ed252734 | 12382 | #endif |
1d7c1841 GS |
12383 | PL_reg_maxiter = 0; |
12384 | PL_reg_leftiter = 0; | |
12385 | PL_reg_poscache = Nullch; | |
12386 | PL_reg_poscache_size= 0; | |
12387 | ||
12388 | /* RE engine - function pointers */ | |
12389 | PL_regcompp = proto_perl->Tregcompp; | |
12390 | PL_regexecp = proto_perl->Tregexecp; | |
12391 | PL_regint_start = proto_perl->Tregint_start; | |
12392 | PL_regint_string = proto_perl->Tregint_string; | |
12393 | PL_regfree = proto_perl->Tregfree; | |
12394 | ||
12395 | PL_reginterp_cnt = 0; | |
12396 | PL_reg_starttry = 0; | |
12397 | ||
a2efc822 SC |
12398 | /* Pluggable optimizer */ |
12399 | PL_peepp = proto_perl->Tpeepp; | |
12400 | ||
081fc587 AB |
12401 | PL_stashcache = newHV(); |
12402 | ||
a0739874 DM |
12403 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
12404 | ptr_table_free(PL_ptr_table); | |
12405 | PL_ptr_table = NULL; | |
c21d1a0f NC |
12406 | ptr_table_free(PL_shared_hek_table); |
12407 | PL_shared_hek_table = NULL; | |
a0739874 | 12408 | } |
8cf8f3d1 | 12409 | |
f284b03f AMS |
12410 | /* Call the ->CLONE method, if it exists, for each of the stashes |
12411 | identified by sv_dup() above. | |
12412 | */ | |
d2d73c3e AB |
12413 | while(av_len(param->stashes) != -1) { |
12414 | HV* stash = (HV*) av_shift(param->stashes); | |
f284b03f AMS |
12415 | GV* cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); |
12416 | if (cloner && GvCV(cloner)) { | |
12417 | dSP; | |
12418 | ENTER; | |
12419 | SAVETMPS; | |
12420 | PUSHMARK(SP); | |
84bda14a | 12421 | XPUSHs(sv_2mortal(newSVhek(HvNAME_HEK(stash)))); |
f284b03f AMS |
12422 | PUTBACK; |
12423 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
12424 | FREETMPS; | |
12425 | LEAVE; | |
12426 | } | |
4a09accc | 12427 | } |
a0739874 | 12428 | |
dc507217 | 12429 | SvREFCNT_dec(param->stashes); |
dc507217 | 12430 | |
6d26897e DM |
12431 | /* orphaned? eg threads->new inside BEGIN or use */ |
12432 | if (PL_compcv && ! SvREFCNT(PL_compcv)) { | |
a3b680e6 | 12433 | (void)SvREFCNT_inc(PL_compcv); |
6d26897e DM |
12434 | SAVEFREESV(PL_compcv); |
12435 | } | |
12436 | ||
1d7c1841 | 12437 | return my_perl; |
1d7c1841 GS |
12438 | } |
12439 | ||
1d7c1841 | 12440 | #endif /* USE_ITHREADS */ |
a0ae6670 | 12441 | |
9f4817db | 12442 | /* |
ccfc67b7 JH |
12443 | =head1 Unicode Support |
12444 | ||
9f4817db JH |
12445 | =for apidoc sv_recode_to_utf8 |
12446 | ||
5d170f3a JH |
12447 | The encoding is assumed to be an Encode object, on entry the PV |
12448 | of the sv is assumed to be octets in that encoding, and the sv | |
12449 | will be converted into Unicode (and UTF-8). | |
9f4817db | 12450 | |
5d170f3a JH |
12451 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
12452 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
12453 | an C<Encode::XS> Encoding object, bad things will happen. |
12454 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 12455 | |
5d170f3a | 12456 | The PV of the sv is returned. |
9f4817db | 12457 | |
5d170f3a JH |
12458 | =cut */ |
12459 | ||
12460 | char * | |
12461 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
12462 | { | |
27da23d5 | 12463 | dVAR; |
220e2d4e | 12464 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
12465 | SV *uni; |
12466 | STRLEN len; | |
12467 | char *s; | |
12468 | dSP; | |
12469 | ENTER; | |
12470 | SAVETMPS; | |
220e2d4e | 12471 | save_re_context(); |
d0063567 DK |
12472 | PUSHMARK(sp); |
12473 | EXTEND(SP, 3); | |
12474 | XPUSHs(encoding); | |
12475 | XPUSHs(sv); | |
7a5fa8a2 | 12476 | /* |
f9893866 NIS |
12477 | NI-S 2002/07/09 |
12478 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
7a5fa8a2 | 12479 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means |
f9893866 NIS |
12480 | remove converted chars from source. |
12481 | ||
12482 | Both will default the value - let them. | |
7a5fa8a2 | 12483 | |
d0063567 | 12484 | XPUSHs(&PL_sv_yes); |
f9893866 | 12485 | */ |
d0063567 DK |
12486 | PUTBACK; |
12487 | call_method("decode", G_SCALAR); | |
12488 | SPAGAIN; | |
12489 | uni = POPs; | |
12490 | PUTBACK; | |
12491 | s = SvPV(uni, len); | |
3f7c398e | 12492 | if (s != SvPVX_const(sv)) { |
d0063567 | 12493 | SvGROW(sv, len + 1); |
3f7c398e | 12494 | Move(s, SvPVX_const(sv), len, char); |
d0063567 DK |
12495 | SvCUR_set(sv, len); |
12496 | SvPVX(sv)[len] = 0; | |
12497 | } | |
12498 | FREETMPS; | |
12499 | LEAVE; | |
d0063567 | 12500 | SvUTF8_on(sv); |
95899a2a | 12501 | return SvPVX(sv); |
f9893866 | 12502 | } |
95899a2a | 12503 | return SvPOKp(sv) ? SvPVX(sv) : NULL; |
9f4817db JH |
12504 | } |
12505 | ||
220e2d4e IH |
12506 | /* |
12507 | =for apidoc sv_cat_decode | |
12508 | ||
12509 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
12510 | assumed to be octets in that encoding and decoding the input starts | |
12511 | from the position which (PV + *offset) pointed to. The dsv will be | |
12512 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
12513 | when the string tstr appears in decoding output or the input ends on | |
12514 | the PV of the ssv. The value which the offset points will be modified | |
12515 | to the last input position on the ssv. | |
68795e93 | 12516 | |
220e2d4e IH |
12517 | Returns TRUE if the terminator was found, else returns FALSE. |
12518 | ||
12519 | =cut */ | |
12520 | ||
12521 | bool | |
12522 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
12523 | SV *ssv, int *offset, char *tstr, int tlen) | |
12524 | { | |
27da23d5 | 12525 | dVAR; |
a73e8557 | 12526 | bool ret = FALSE; |
220e2d4e | 12527 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
12528 | SV *offsv; |
12529 | dSP; | |
12530 | ENTER; | |
12531 | SAVETMPS; | |
12532 | save_re_context(); | |
12533 | PUSHMARK(sp); | |
12534 | EXTEND(SP, 6); | |
12535 | XPUSHs(encoding); | |
12536 | XPUSHs(dsv); | |
12537 | XPUSHs(ssv); | |
12538 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
12539 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
12540 | PUTBACK; | |
12541 | call_method("cat_decode", G_SCALAR); | |
12542 | SPAGAIN; | |
12543 | ret = SvTRUE(TOPs); | |
12544 | *offset = SvIV(offsv); | |
12545 | PUTBACK; | |
12546 | FREETMPS; | |
12547 | LEAVE; | |
220e2d4e | 12548 | } |
a73e8557 JH |
12549 | else |
12550 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
12551 | return ret; | |
220e2d4e | 12552 | } |
f9893866 | 12553 | |
241d1a3b NC |
12554 | /* |
12555 | * Local variables: | |
12556 | * c-indentation-style: bsd | |
12557 | * c-basic-offset: 4 | |
12558 | * indent-tabs-mode: t | |
12559 | * End: | |
12560 | * | |
37442d52 RGS |
12561 | * ex: set ts=8 sts=4 sw=4 noet: |
12562 | */ |