Commit | Line | Data |
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a0d0e21e | 1 | /* sv.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
241d1a3b | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e | 9 | * "I wonder what the Entish is for 'yes' and 'no'," he thought. |
645c22ef DM |
10 | * |
11 | * | |
5e045b90 AMS |
12 | * This file contains the code that creates, manipulates and destroys |
13 | * scalar values (SVs). The other types (AV, HV, GV, etc.) reuse the | |
14 | * structure of an SV, so their creation and destruction is handled | |
15 | * here; higher-level functions are in av.c, hv.c, and so on. Opcode | |
16 | * level functions (eg. substr, split, join) for each of the types are | |
17 | * in the pp*.c files. | |
79072805 LW |
18 | */ |
19 | ||
20 | #include "EXTERN.h" | |
864dbfa3 | 21 | #define PERL_IN_SV_C |
79072805 | 22 | #include "perl.h" |
d2f185dc | 23 | #include "regcomp.h" |
79072805 | 24 | |
51371543 | 25 | #define FCALL *f |
2c5424a7 | 26 | |
2f8ed50e OS |
27 | #ifdef __Lynx__ |
28 | /* Missing proto on LynxOS */ | |
29 | char *gconvert(double, int, int, char *); | |
30 | #endif | |
31 | ||
e23c8137 JH |
32 | #ifdef PERL_UTF8_CACHE_ASSERT |
33 | /* The cache element 0 is the Unicode offset; | |
34 | * the cache element 1 is the byte offset of the element 0; | |
35 | * the cache element 2 is the Unicode length of the substring; | |
36 | * the cache element 3 is the byte length of the substring; | |
37 | * The checking of the substring side would be good | |
38 | * but substr() has enough code paths to make my head spin; | |
39 | * if adding more checks watch out for the following tests: | |
40 | * t/op/index.t t/op/length.t t/op/pat.t t/op/substr.t | |
41 | * lib/utf8.t lib/Unicode/Collate/t/index.t | |
42 | * --jhi | |
43 | */ | |
44 | #define ASSERT_UTF8_CACHE(cache) \ | |
45 | STMT_START { if (cache) { assert((cache)[0] <= (cache)[1]); } } STMT_END | |
46 | #else | |
47 | #define ASSERT_UTF8_CACHE(cache) NOOP | |
48 | #endif | |
49 | ||
f8c7b90f | 50 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 51 | #define SV_COW_NEXT_SV(sv) INT2PTR(SV *,SvUVX(sv)) |
607fa7f2 | 52 | #define SV_COW_NEXT_SV_SET(current,next) SvUV_set(current, PTR2UV(next)) |
b5ccf5f2 | 53 | /* This is a pessimistic view. Scalar must be purely a read-write PV to copy- |
765f542d | 54 | on-write. */ |
765f542d | 55 | #endif |
645c22ef DM |
56 | |
57 | /* ============================================================================ | |
58 | ||
59 | =head1 Allocation and deallocation of SVs. | |
60 | ||
5e045b90 AMS |
61 | An SV (or AV, HV, etc.) is allocated in two parts: the head (struct sv, |
62 | av, hv...) contains type and reference count information, as well as a | |
63 | pointer to the body (struct xrv, xpv, xpviv...), which contains fields | |
64 | specific to each type. | |
65 | ||
4977e971 NC |
66 | Normally, this allocation is done using arenas, which by default are |
67 | approximately 4K chunks of memory parcelled up into N heads or bodies. The | |
68 | first slot in each arena is reserved, and is used to hold a link to the next | |
69 | arena. In the case of heads, the unused first slot also contains some flags | |
70 | and a note of the number of slots. Snaked through each arena chain is a | |
5e045b90 | 71 | linked list of free items; when this becomes empty, an extra arena is |
4977e971 | 72 | allocated and divided up into N items which are threaded into the free list. |
645c22ef DM |
73 | |
74 | The following global variables are associated with arenas: | |
75 | ||
76 | PL_sv_arenaroot pointer to list of SV arenas | |
77 | PL_sv_root pointer to list of free SV structures | |
78 | ||
79 | PL_foo_arenaroot pointer to list of foo arenas, | |
80 | PL_foo_root pointer to list of free foo bodies | |
81 | ... for foo in xiv, xnv, xrv, xpv etc. | |
82 | ||
83 | Note that some of the larger and more rarely used body types (eg xpvio) | |
84 | are not allocated using arenas, but are instead just malloc()/free()ed as | |
85 | required. Also, if PURIFY is defined, arenas are abandoned altogether, | |
86 | with all items individually malloc()ed. In addition, a few SV heads are | |
87 | not allocated from an arena, but are instead directly created as static | |
4977e971 NC |
88 | or auto variables, eg PL_sv_undef. The size of arenas can be changed from |
89 | the default by setting PERL_ARENA_SIZE appropriately at compile time. | |
645c22ef DM |
90 | |
91 | The SV arena serves the secondary purpose of allowing still-live SVs | |
92 | to be located and destroyed during final cleanup. | |
93 | ||
94 | At the lowest level, the macros new_SV() and del_SV() grab and free | |
95 | an SV head. (If debugging with -DD, del_SV() calls the function S_del_sv() | |
96 | to return the SV to the free list with error checking.) new_SV() calls | |
97 | more_sv() / sv_add_arena() to add an extra arena if the free list is empty. | |
98 | SVs in the free list have their SvTYPE field set to all ones. | |
99 | ||
100 | Similarly, there are macros new_XIV()/del_XIV(), new_XNV()/del_XNV() etc | |
101 | that allocate and return individual body types. Normally these are mapped | |
ff276b08 RG |
102 | to the arena-manipulating functions new_xiv()/del_xiv() etc, but may be |
103 | instead mapped directly to malloc()/free() if PURIFY is defined. The | |
645c22ef DM |
104 | new/del functions remove from, or add to, the appropriate PL_foo_root |
105 | list, and call more_xiv() etc to add a new arena if the list is empty. | |
106 | ||
ff276b08 | 107 | At the time of very final cleanup, sv_free_arenas() is called from |
645c22ef DM |
108 | perl_destruct() to physically free all the arenas allocated since the |
109 | start of the interpreter. Note that this also clears PL_he_arenaroot, | |
110 | which is otherwise dealt with in hv.c. | |
111 | ||
112 | Manipulation of any of the PL_*root pointers is protected by enclosing | |
113 | LOCK_SV_MUTEX; ... UNLOCK_SV_MUTEX calls which should Do the Right Thing | |
114 | if threads are enabled. | |
115 | ||
116 | The function visit() scans the SV arenas list, and calls a specified | |
117 | function for each SV it finds which is still live - ie which has an SvTYPE | |
118 | other than all 1's, and a non-zero SvREFCNT. visit() is used by the | |
119 | following functions (specified as [function that calls visit()] / [function | |
120 | called by visit() for each SV]): | |
121 | ||
122 | sv_report_used() / do_report_used() | |
123 | dump all remaining SVs (debugging aid) | |
124 | ||
125 | sv_clean_objs() / do_clean_objs(),do_clean_named_objs() | |
126 | Attempt to free all objects pointed to by RVs, | |
127 | and, unless DISABLE_DESTRUCTOR_KLUDGE is defined, | |
128 | try to do the same for all objects indirectly | |
129 | referenced by typeglobs too. Called once from | |
130 | perl_destruct(), prior to calling sv_clean_all() | |
131 | below. | |
132 | ||
133 | sv_clean_all() / do_clean_all() | |
134 | SvREFCNT_dec(sv) each remaining SV, possibly | |
135 | triggering an sv_free(). It also sets the | |
136 | SVf_BREAK flag on the SV to indicate that the | |
137 | refcnt has been artificially lowered, and thus | |
138 | stopping sv_free() from giving spurious warnings | |
139 | about SVs which unexpectedly have a refcnt | |
140 | of zero. called repeatedly from perl_destruct() | |
141 | until there are no SVs left. | |
142 | ||
143 | =head2 Summary | |
144 | ||
145 | Private API to rest of sv.c | |
146 | ||
147 | new_SV(), del_SV(), | |
148 | ||
149 | new_XIV(), del_XIV(), | |
150 | new_XNV(), del_XNV(), | |
151 | etc | |
152 | ||
153 | Public API: | |
154 | ||
8cf8f3d1 | 155 | sv_report_used(), sv_clean_objs(), sv_clean_all(), sv_free_arenas() |
645c22ef DM |
156 | |
157 | ||
158 | =cut | |
159 | ||
160 | ============================================================================ */ | |
161 | ||
162 | ||
51371543 | 163 | |
4561caa4 CS |
164 | /* |
165 | * "A time to plant, and a time to uproot what was planted..." | |
166 | */ | |
167 | ||
cac9b346 | 168 | |
fd0854ff DM |
169 | #ifdef DEBUG_LEAKING_SCALARS |
170 | # ifdef NETWARE | |
171 | # define FREE_SV_DEBUG_FILE(sv) PerlMemfree((sv)->sv_debug_file) | |
172 | # else | |
173 | # define FREE_SV_DEBUG_FILE(sv) PerlMemShared_free((sv)->sv_debug_file) | |
174 | # endif | |
175 | #else | |
176 | # define FREE_SV_DEBUG_FILE(sv) | |
177 | #endif | |
178 | ||
053fc874 GS |
179 | #define plant_SV(p) \ |
180 | STMT_START { \ | |
fd0854ff | 181 | FREE_SV_DEBUG_FILE(p); \ |
053fc874 GS |
182 | SvANY(p) = (void *)PL_sv_root; \ |
183 | SvFLAGS(p) = SVTYPEMASK; \ | |
184 | PL_sv_root = (p); \ | |
185 | --PL_sv_count; \ | |
186 | } STMT_END | |
a0d0e21e | 187 | |
fba3b22e | 188 | /* sv_mutex must be held while calling uproot_SV() */ |
053fc874 GS |
189 | #define uproot_SV(p) \ |
190 | STMT_START { \ | |
191 | (p) = PL_sv_root; \ | |
192 | PL_sv_root = (SV*)SvANY(p); \ | |
193 | ++PL_sv_count; \ | |
194 | } STMT_END | |
195 | ||
645c22ef | 196 | |
cac9b346 NC |
197 | /* make some more SVs by adding another arena */ |
198 | ||
199 | /* sv_mutex must be held while calling more_sv() */ | |
200 | STATIC SV* | |
201 | S_more_sv(pTHX) | |
202 | { | |
203 | SV* sv; | |
204 | ||
205 | if (PL_nice_chunk) { | |
206 | sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0); | |
207 | PL_nice_chunk = Nullch; | |
208 | PL_nice_chunk_size = 0; | |
209 | } | |
210 | else { | |
211 | char *chunk; /* must use New here to match call to */ | |
2e7ed132 NC |
212 | New(704,chunk,PERL_ARENA_SIZE,char); /* Safefree() in sv_free_arenas() */ |
213 | sv_add_arena(chunk, PERL_ARENA_SIZE, 0); | |
cac9b346 NC |
214 | } |
215 | uproot_SV(sv); | |
216 | return sv; | |
217 | } | |
218 | ||
645c22ef DM |
219 | /* new_SV(): return a new, empty SV head */ |
220 | ||
eba0f806 DM |
221 | #ifdef DEBUG_LEAKING_SCALARS |
222 | /* provide a real function for a debugger to play with */ | |
223 | STATIC SV* | |
224 | S_new_SV(pTHX) | |
225 | { | |
226 | SV* sv; | |
227 | ||
228 | LOCK_SV_MUTEX; | |
229 | if (PL_sv_root) | |
230 | uproot_SV(sv); | |
231 | else | |
cac9b346 | 232 | sv = S_more_sv(aTHX); |
eba0f806 DM |
233 | UNLOCK_SV_MUTEX; |
234 | SvANY(sv) = 0; | |
235 | SvREFCNT(sv) = 1; | |
236 | SvFLAGS(sv) = 0; | |
fd0854ff DM |
237 | sv->sv_debug_optype = PL_op ? PL_op->op_type : 0; |
238 | sv->sv_debug_line = (U16) ((PL_copline == NOLINE) ? | |
239 | (PL_curcop ? CopLINE(PL_curcop) : 0) : PL_copline); | |
240 | sv->sv_debug_inpad = 0; | |
241 | sv->sv_debug_cloned = 0; | |
242 | # ifdef NETWARE | |
243 | sv->sv_debug_file = PL_curcop ? savepv(CopFILE(PL_curcop)): NULL; | |
244 | # else | |
245 | sv->sv_debug_file = PL_curcop ? savesharedpv(CopFILE(PL_curcop)): NULL; | |
246 | # endif | |
247 | ||
eba0f806 DM |
248 | return sv; |
249 | } | |
250 | # define new_SV(p) (p)=S_new_SV(aTHX) | |
251 | ||
252 | #else | |
253 | # define new_SV(p) \ | |
053fc874 GS |
254 | STMT_START { \ |
255 | LOCK_SV_MUTEX; \ | |
256 | if (PL_sv_root) \ | |
257 | uproot_SV(p); \ | |
258 | else \ | |
cac9b346 | 259 | (p) = S_more_sv(aTHX); \ |
053fc874 GS |
260 | UNLOCK_SV_MUTEX; \ |
261 | SvANY(p) = 0; \ | |
262 | SvREFCNT(p) = 1; \ | |
263 | SvFLAGS(p) = 0; \ | |
264 | } STMT_END | |
eba0f806 | 265 | #endif |
463ee0b2 | 266 | |
645c22ef DM |
267 | |
268 | /* del_SV(): return an empty SV head to the free list */ | |
269 | ||
a0d0e21e | 270 | #ifdef DEBUGGING |
4561caa4 | 271 | |
053fc874 GS |
272 | #define del_SV(p) \ |
273 | STMT_START { \ | |
274 | LOCK_SV_MUTEX; \ | |
aea4f609 | 275 | if (DEBUG_D_TEST) \ |
053fc874 GS |
276 | del_sv(p); \ |
277 | else \ | |
278 | plant_SV(p); \ | |
279 | UNLOCK_SV_MUTEX; \ | |
280 | } STMT_END | |
a0d0e21e | 281 | |
76e3520e | 282 | STATIC void |
cea2e8a9 | 283 | S_del_sv(pTHX_ SV *p) |
463ee0b2 | 284 | { |
aea4f609 | 285 | if (DEBUG_D_TEST) { |
4633a7c4 | 286 | SV* sva; |
a3b680e6 | 287 | bool ok = 0; |
3280af22 | 288 | for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) { |
53c1dcc0 AL |
289 | const SV * const sv = sva + 1; |
290 | const SV * const svend = &sva[SvREFCNT(sva)]; | |
c0ff570e | 291 | if (p >= sv && p < svend) { |
a0d0e21e | 292 | ok = 1; |
c0ff570e NC |
293 | break; |
294 | } | |
a0d0e21e LW |
295 | } |
296 | if (!ok) { | |
0453d815 | 297 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 298 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
299 | "Attempt to free non-arena SV: 0x%"UVxf |
300 | pTHX__FORMAT, PTR2UV(p) pTHX__VALUE); | |
a0d0e21e LW |
301 | return; |
302 | } | |
303 | } | |
4561caa4 | 304 | plant_SV(p); |
463ee0b2 | 305 | } |
a0d0e21e | 306 | |
4561caa4 CS |
307 | #else /* ! DEBUGGING */ |
308 | ||
309 | #define del_SV(p) plant_SV(p) | |
310 | ||
311 | #endif /* DEBUGGING */ | |
463ee0b2 | 312 | |
645c22ef DM |
313 | |
314 | /* | |
ccfc67b7 JH |
315 | =head1 SV Manipulation Functions |
316 | ||
645c22ef DM |
317 | =for apidoc sv_add_arena |
318 | ||
319 | Given a chunk of memory, link it to the head of the list of arenas, | |
320 | and split it into a list of free SVs. | |
321 | ||
322 | =cut | |
323 | */ | |
324 | ||
4633a7c4 | 325 | void |
864dbfa3 | 326 | Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags) |
463ee0b2 | 327 | { |
4633a7c4 | 328 | SV* sva = (SV*)ptr; |
463ee0b2 LW |
329 | register SV* sv; |
330 | register SV* svend; | |
4633a7c4 LW |
331 | |
332 | /* The first SV in an arena isn't an SV. */ | |
3280af22 | 333 | SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */ |
4633a7c4 LW |
334 | SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */ |
335 | SvFLAGS(sva) = flags; /* FAKE if not to be freed */ | |
336 | ||
3280af22 NIS |
337 | PL_sv_arenaroot = sva; |
338 | PL_sv_root = sva + 1; | |
4633a7c4 LW |
339 | |
340 | svend = &sva[SvREFCNT(sva) - 1]; | |
341 | sv = sva + 1; | |
463ee0b2 | 342 | while (sv < svend) { |
a0d0e21e | 343 | SvANY(sv) = (void *)(SV*)(sv + 1); |
03e36789 | 344 | #ifdef DEBUGGING |
978b032e | 345 | SvREFCNT(sv) = 0; |
03e36789 NC |
346 | #endif |
347 | /* Must always set typemask because it's awlays checked in on cleanup | |
348 | when the arenas are walked looking for objects. */ | |
8990e307 | 349 | SvFLAGS(sv) = SVTYPEMASK; |
463ee0b2 LW |
350 | sv++; |
351 | } | |
352 | SvANY(sv) = 0; | |
03e36789 NC |
353 | #ifdef DEBUGGING |
354 | SvREFCNT(sv) = 0; | |
355 | #endif | |
4633a7c4 LW |
356 | SvFLAGS(sv) = SVTYPEMASK; |
357 | } | |
358 | ||
055972dc DM |
359 | /* visit(): call the named function for each non-free SV in the arenas |
360 | * whose flags field matches the flags/mask args. */ | |
645c22ef | 361 | |
5226ed68 | 362 | STATIC I32 |
055972dc | 363 | S_visit(pTHX_ SVFUNC_t f, U32 flags, U32 mask) |
8990e307 | 364 | { |
4633a7c4 | 365 | SV* sva; |
5226ed68 | 366 | I32 visited = 0; |
8990e307 | 367 | |
3280af22 | 368 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
53c1dcc0 | 369 | register const SV * const svend = &sva[SvREFCNT(sva)]; |
a3b680e6 | 370 | register SV* sv; |
4561caa4 | 371 | for (sv = sva + 1; sv < svend; ++sv) { |
055972dc DM |
372 | if (SvTYPE(sv) != SVTYPEMASK |
373 | && (sv->sv_flags & mask) == flags | |
374 | && SvREFCNT(sv)) | |
375 | { | |
acfe0abc | 376 | (FCALL)(aTHX_ sv); |
5226ed68 JH |
377 | ++visited; |
378 | } | |
8990e307 LW |
379 | } |
380 | } | |
5226ed68 | 381 | return visited; |
8990e307 LW |
382 | } |
383 | ||
758a08c3 JH |
384 | #ifdef DEBUGGING |
385 | ||
645c22ef DM |
386 | /* called by sv_report_used() for each live SV */ |
387 | ||
388 | static void | |
acfe0abc | 389 | do_report_used(pTHX_ SV *sv) |
645c22ef DM |
390 | { |
391 | if (SvTYPE(sv) != SVTYPEMASK) { | |
392 | PerlIO_printf(Perl_debug_log, "****\n"); | |
393 | sv_dump(sv); | |
394 | } | |
395 | } | |
758a08c3 | 396 | #endif |
645c22ef DM |
397 | |
398 | /* | |
399 | =for apidoc sv_report_used | |
400 | ||
401 | Dump the contents of all SVs not yet freed. (Debugging aid). | |
402 | ||
403 | =cut | |
404 | */ | |
405 | ||
8990e307 | 406 | void |
864dbfa3 | 407 | Perl_sv_report_used(pTHX) |
4561caa4 | 408 | { |
ff270d3a | 409 | #ifdef DEBUGGING |
055972dc | 410 | visit(do_report_used, 0, 0); |
ff270d3a | 411 | #endif |
4561caa4 CS |
412 | } |
413 | ||
645c22ef DM |
414 | /* called by sv_clean_objs() for each live SV */ |
415 | ||
416 | static void | |
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 | |
7cfef17e NC |
512 | static void |
513 | S_free_arena(pTHX_ void **root) { | |
514 | while (root) { | |
1b6737cc | 515 | void ** const next = *(void **)root; |
7cfef17e NC |
516 | Safefree(root); |
517 | root = next; | |
518 | } | |
519 | } | |
520 | ||
645c22ef DM |
521 | /* |
522 | =for apidoc sv_free_arenas | |
523 | ||
524 | Deallocate the memory used by all arenas. Note that all the individual SV | |
525 | heads and bodies within the arenas must already have been freed. | |
526 | ||
527 | =cut | |
528 | */ | |
529 | ||
7cfef17e NC |
530 | #define free_arena(name) \ |
531 | STMT_START { \ | |
532 | S_free_arena(aTHX_ (void**) PL_ ## name ## _arenaroot); \ | |
533 | PL_ ## name ## _arenaroot = 0; \ | |
534 | PL_ ## name ## _root = 0; \ | |
535 | } STMT_END | |
536 | ||
4633a7c4 | 537 | void |
864dbfa3 | 538 | Perl_sv_free_arenas(pTHX) |
4633a7c4 LW |
539 | { |
540 | SV* sva; | |
541 | SV* svanext; | |
542 | ||
543 | /* Free arenas here, but be careful about fake ones. (We assume | |
544 | contiguity of the fake ones with the corresponding real ones.) */ | |
545 | ||
3280af22 | 546 | for (sva = PL_sv_arenaroot; sva; sva = svanext) { |
4633a7c4 LW |
547 | svanext = (SV*) SvANY(sva); |
548 | while (svanext && SvFAKE(svanext)) | |
549 | svanext = (SV*) SvANY(svanext); | |
550 | ||
551 | if (!SvFAKE(sva)) | |
1df70142 | 552 | Safefree(sva); |
4633a7c4 | 553 | } |
8b4f5e17 | 554 | |
7cfef17e NC |
555 | free_arena(xnv); |
556 | free_arena(xpv); | |
557 | free_arena(xpviv); | |
558 | free_arena(xpvnv); | |
559 | free_arena(xpvcv); | |
560 | free_arena(xpvav); | |
561 | free_arena(xpvhv); | |
562 | free_arena(xpvmg); | |
563 | free_arena(xpvgv); | |
564 | free_arena(xpvlv); | |
565 | free_arena(xpvbm); | |
566 | free_arena(he); | |
567 | #if defined(USE_ITHREADS) | |
568 | free_arena(pte); | |
569 | #endif | |
612f20c3 | 570 | |
3280af22 NIS |
571 | if (PL_nice_chunk) |
572 | Safefree(PL_nice_chunk); | |
573 | PL_nice_chunk = Nullch; | |
574 | PL_nice_chunk_size = 0; | |
575 | PL_sv_arenaroot = 0; | |
576 | PL_sv_root = 0; | |
4633a7c4 LW |
577 | } |
578 | ||
29489e7c DM |
579 | /* --------------------------------------------------------------------- |
580 | * | |
581 | * support functions for report_uninit() | |
582 | */ | |
583 | ||
584 | /* the maxiumum size of array or hash where we will scan looking | |
585 | * for the undefined element that triggered the warning */ | |
586 | ||
587 | #define FUV_MAX_SEARCH_SIZE 1000 | |
588 | ||
589 | /* Look for an entry in the hash whose value has the same SV as val; | |
590 | * If so, return a mortal copy of the key. */ | |
591 | ||
592 | STATIC SV* | |
593 | S_find_hash_subscript(pTHX_ HV *hv, SV* val) | |
594 | { | |
27da23d5 | 595 | dVAR; |
29489e7c | 596 | register HE **array; |
29489e7c DM |
597 | I32 i; |
598 | ||
599 | if (!hv || SvMAGICAL(hv) || !HvARRAY(hv) || | |
600 | (HvTOTALKEYS(hv) > FUV_MAX_SEARCH_SIZE)) | |
601 | return Nullsv; | |
602 | ||
603 | array = HvARRAY(hv); | |
604 | ||
605 | for (i=HvMAX(hv); i>0; i--) { | |
f54cb97a | 606 | register HE *entry; |
29489e7c DM |
607 | for (entry = array[i]; entry; entry = HeNEXT(entry)) { |
608 | if (HeVAL(entry) != val) | |
609 | continue; | |
610 | if ( HeVAL(entry) == &PL_sv_undef || | |
611 | HeVAL(entry) == &PL_sv_placeholder) | |
612 | continue; | |
613 | if (!HeKEY(entry)) | |
614 | return Nullsv; | |
615 | if (HeKLEN(entry) == HEf_SVKEY) | |
616 | return sv_mortalcopy(HeKEY_sv(entry)); | |
617 | return sv_2mortal(newSVpvn(HeKEY(entry), HeKLEN(entry))); | |
618 | } | |
619 | } | |
620 | return Nullsv; | |
621 | } | |
622 | ||
623 | /* Look for an entry in the array whose value has the same SV as val; | |
624 | * If so, return the index, otherwise return -1. */ | |
625 | ||
626 | STATIC I32 | |
627 | S_find_array_subscript(pTHX_ AV *av, SV* val) | |
628 | { | |
629 | SV** svp; | |
630 | I32 i; | |
631 | if (!av || SvMAGICAL(av) || !AvARRAY(av) || | |
632 | (AvFILLp(av) > FUV_MAX_SEARCH_SIZE)) | |
633 | return -1; | |
634 | ||
635 | svp = AvARRAY(av); | |
636 | for (i=AvFILLp(av); i>=0; i--) { | |
637 | if (svp[i] == val && svp[i] != &PL_sv_undef) | |
638 | return i; | |
639 | } | |
640 | return -1; | |
641 | } | |
642 | ||
643 | /* S_varname(): return the name of a variable, optionally with a subscript. | |
644 | * If gv is non-zero, use the name of that global, along with gvtype (one | |
645 | * of "$", "@", "%"); otherwise use the name of the lexical at pad offset | |
646 | * targ. Depending on the value of the subscript_type flag, return: | |
647 | */ | |
648 | ||
649 | #define FUV_SUBSCRIPT_NONE 1 /* "@foo" */ | |
650 | #define FUV_SUBSCRIPT_ARRAY 2 /* "$foo[aindex]" */ | |
651 | #define FUV_SUBSCRIPT_HASH 3 /* "$foo{keyname}" */ | |
652 | #define FUV_SUBSCRIPT_WITHIN 4 /* "within @foo" */ | |
653 | ||
654 | STATIC SV* | |
bfed75c6 | 655 | S_varname(pTHX_ GV *gv, const char *gvtype, PADOFFSET targ, |
29489e7c DM |
656 | SV* keyname, I32 aindex, int subscript_type) |
657 | { | |
29489e7c | 658 | |
a3b680e6 | 659 | SV * const name = sv_newmortal(); |
29489e7c DM |
660 | if (gv) { |
661 | ||
662 | /* simulate gv_fullname4(), but add literal '^' for $^FOO names | |
663 | * XXX get rid of all this if gv_fullnameX() ever supports this | |
664 | * directly */ | |
665 | ||
bfed75c6 | 666 | const char *p; |
53c1dcc0 | 667 | HV * const hv = GvSTASH(gv); |
29489e7c DM |
668 | sv_setpv(name, gvtype); |
669 | if (!hv) | |
670 | p = "???"; | |
bfcb3514 | 671 | else if (!(p=HvNAME_get(hv))) |
29489e7c | 672 | p = "__ANON__"; |
29489e7c DM |
673 | if (strNE(p, "main")) { |
674 | sv_catpv(name,p); | |
675 | sv_catpvn(name,"::", 2); | |
676 | } | |
677 | if (GvNAMELEN(gv)>= 1 && | |
678 | ((unsigned int)*GvNAME(gv)) <= 26) | |
679 | { /* handle $^FOO */ | |
680 | Perl_sv_catpvf(aTHX_ name,"^%c", *GvNAME(gv) + 'A' - 1); | |
681 | sv_catpvn(name,GvNAME(gv)+1,GvNAMELEN(gv)-1); | |
682 | } | |
683 | else | |
684 | sv_catpvn(name,GvNAME(gv),GvNAMELEN(gv)); | |
685 | } | |
686 | else { | |
53c1dcc0 AL |
687 | U32 unused; |
688 | CV * const cv = find_runcv(&unused); | |
689 | SV *sv; | |
690 | AV *av; | |
691 | ||
29489e7c | 692 | if (!cv || !CvPADLIST(cv)) |
1b6737cc | 693 | return Nullsv; |
29489e7c DM |
694 | av = (AV*)(*av_fetch(CvPADLIST(cv), 0, FALSE)); |
695 | sv = *av_fetch(av, targ, FALSE); | |
696 | /* SvLEN in a pad name is not to be trusted */ | |
f9926b10 | 697 | sv_setpv(name, SvPV_nolen_const(sv)); |
29489e7c DM |
698 | } |
699 | ||
700 | if (subscript_type == FUV_SUBSCRIPT_HASH) { | |
1b6737cc | 701 | SV * const sv = NEWSV(0,0); |
29489e7c | 702 | *SvPVX(name) = '$'; |
29489e7c | 703 | Perl_sv_catpvf(aTHX_ name, "{%s}", |
3f7c398e | 704 | pv_display(sv,SvPVX_const(keyname), SvCUR(keyname), 0, 32)); |
29489e7c DM |
705 | SvREFCNT_dec(sv); |
706 | } | |
707 | else if (subscript_type == FUV_SUBSCRIPT_ARRAY) { | |
708 | *SvPVX(name) = '$'; | |
265a12b8 | 709 | Perl_sv_catpvf(aTHX_ name, "[%"IVdf"]", (IV)aindex); |
29489e7c DM |
710 | } |
711 | else if (subscript_type == FUV_SUBSCRIPT_WITHIN) | |
712 | sv_insert(name, 0, 0, "within ", 7); | |
713 | ||
714 | return name; | |
715 | } | |
716 | ||
717 | ||
718 | /* | |
719 | =for apidoc find_uninit_var | |
720 | ||
721 | Find the name of the undefined variable (if any) that caused the operator o | |
722 | to issue a "Use of uninitialized value" warning. | |
723 | If match is true, only return a name if it's value matches uninit_sv. | |
724 | So roughly speaking, if a unary operator (such as OP_COS) generates a | |
725 | warning, then following the direct child of the op may yield an | |
726 | OP_PADSV or OP_GV that gives the name of the undefined variable. On the | |
727 | other hand, with OP_ADD there are two branches to follow, so we only print | |
728 | the variable name if we get an exact match. | |
729 | ||
730 | The name is returned as a mortal SV. | |
731 | ||
732 | Assumes that PL_op is the op that originally triggered the error, and that | |
733 | PL_comppad/PL_curpad points to the currently executing pad. | |
734 | ||
735 | =cut | |
736 | */ | |
737 | ||
738 | STATIC SV * | |
739 | S_find_uninit_var(pTHX_ OP* obase, SV* uninit_sv, bool match) | |
740 | { | |
27da23d5 | 741 | dVAR; |
29489e7c DM |
742 | SV *sv; |
743 | AV *av; | |
29489e7c DM |
744 | GV *gv; |
745 | OP *o, *o2, *kid; | |
746 | ||
747 | if (!obase || (match && (!uninit_sv || uninit_sv == &PL_sv_undef || | |
748 | uninit_sv == &PL_sv_placeholder))) | |
749 | return Nullsv; | |
750 | ||
751 | switch (obase->op_type) { | |
752 | ||
753 | case OP_RV2AV: | |
754 | case OP_RV2HV: | |
755 | case OP_PADAV: | |
756 | case OP_PADHV: | |
757 | { | |
f54cb97a AL |
758 | const bool pad = (obase->op_type == OP_PADAV || obase->op_type == OP_PADHV); |
759 | const bool hash = (obase->op_type == OP_PADHV || obase->op_type == OP_RV2HV); | |
112dcc46 RGS |
760 | I32 index = 0; |
761 | SV *keysv = Nullsv; | |
29489e7c DM |
762 | int subscript_type = FUV_SUBSCRIPT_WITHIN; |
763 | ||
764 | if (pad) { /* @lex, %lex */ | |
765 | sv = PAD_SVl(obase->op_targ); | |
766 | gv = Nullgv; | |
767 | } | |
768 | else { | |
769 | if (cUNOPx(obase)->op_first->op_type == OP_GV) { | |
770 | /* @global, %global */ | |
771 | gv = cGVOPx_gv(cUNOPx(obase)->op_first); | |
772 | if (!gv) | |
773 | break; | |
774 | sv = hash ? (SV*)GvHV(gv): (SV*)GvAV(gv); | |
775 | } | |
776 | else /* @{expr}, %{expr} */ | |
777 | return find_uninit_var(cUNOPx(obase)->op_first, | |
778 | uninit_sv, match); | |
779 | } | |
780 | ||
781 | /* attempt to find a match within the aggregate */ | |
782 | if (hash) { | |
783 | keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); | |
784 | if (keysv) | |
785 | subscript_type = FUV_SUBSCRIPT_HASH; | |
786 | } | |
787 | else { | |
788 | index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); | |
789 | if (index >= 0) | |
790 | subscript_type = FUV_SUBSCRIPT_ARRAY; | |
791 | } | |
792 | ||
793 | if (match && subscript_type == FUV_SUBSCRIPT_WITHIN) | |
794 | break; | |
795 | ||
1b6737cc | 796 | return varname(gv, hash ? "%" : "@", obase->op_targ, |
29489e7c DM |
797 | keysv, index, subscript_type); |
798 | } | |
799 | ||
800 | case OP_PADSV: | |
801 | if (match && PAD_SVl(obase->op_targ) != uninit_sv) | |
802 | break; | |
1b6737cc | 803 | return varname(Nullgv, "$", obase->op_targ, |
29489e7c DM |
804 | Nullsv, 0, FUV_SUBSCRIPT_NONE); |
805 | ||
806 | case OP_GVSV: | |
807 | gv = cGVOPx_gv(obase); | |
808 | if (!gv || (match && GvSV(gv) != uninit_sv)) | |
809 | break; | |
1b6737cc | 810 | return varname(gv, "$", 0, Nullsv, 0, FUV_SUBSCRIPT_NONE); |
29489e7c DM |
811 | |
812 | case OP_AELEMFAST: | |
813 | if (obase->op_flags & OPf_SPECIAL) { /* lexical array */ | |
814 | if (match) { | |
1b6737cc | 815 | SV **svp; |
29489e7c DM |
816 | av = (AV*)PAD_SV(obase->op_targ); |
817 | if (!av || SvRMAGICAL(av)) | |
818 | break; | |
819 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
820 | if (!svp || *svp != uninit_sv) | |
821 | break; | |
822 | } | |
1b6737cc | 823 | return varname(Nullgv, "$", obase->op_targ, |
29489e7c DM |
824 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); |
825 | } | |
826 | else { | |
827 | gv = cGVOPx_gv(obase); | |
828 | if (!gv) | |
829 | break; | |
830 | if (match) { | |
1b6737cc | 831 | SV **svp; |
29489e7c DM |
832 | av = GvAV(gv); |
833 | if (!av || SvRMAGICAL(av)) | |
834 | break; | |
835 | svp = av_fetch(av, (I32)obase->op_private, FALSE); | |
836 | if (!svp || *svp != uninit_sv) | |
837 | break; | |
838 | } | |
1b6737cc | 839 | return varname(gv, "$", 0, |
29489e7c DM |
840 | Nullsv, (I32)obase->op_private, FUV_SUBSCRIPT_ARRAY); |
841 | } | |
842 | break; | |
843 | ||
844 | case OP_EXISTS: | |
845 | o = cUNOPx(obase)->op_first; | |
846 | if (!o || o->op_type != OP_NULL || | |
847 | ! (o->op_targ == OP_AELEM || o->op_targ == OP_HELEM)) | |
848 | break; | |
849 | return find_uninit_var(cBINOPo->op_last, uninit_sv, match); | |
850 | ||
851 | case OP_AELEM: | |
852 | case OP_HELEM: | |
853 | if (PL_op == obase) | |
854 | /* $a[uninit_expr] or $h{uninit_expr} */ | |
855 | return find_uninit_var(cBINOPx(obase)->op_last, uninit_sv, match); | |
856 | ||
857 | gv = Nullgv; | |
858 | o = cBINOPx(obase)->op_first; | |
859 | kid = cBINOPx(obase)->op_last; | |
860 | ||
861 | /* get the av or hv, and optionally the gv */ | |
862 | sv = Nullsv; | |
863 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) { | |
864 | sv = PAD_SV(o->op_targ); | |
865 | } | |
866 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_RV2HV) | |
867 | && cUNOPo->op_first->op_type == OP_GV) | |
868 | { | |
869 | gv = cGVOPx_gv(cUNOPo->op_first); | |
870 | if (!gv) | |
871 | break; | |
872 | sv = o->op_type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)GvAV(gv); | |
873 | } | |
874 | if (!sv) | |
875 | break; | |
876 | ||
877 | if (kid && kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) { | |
878 | /* index is constant */ | |
879 | if (match) { | |
880 | if (SvMAGICAL(sv)) | |
881 | break; | |
882 | if (obase->op_type == OP_HELEM) { | |
883 | HE* he = hv_fetch_ent((HV*)sv, cSVOPx_sv(kid), 0, 0); | |
884 | if (!he || HeVAL(he) != uninit_sv) | |
885 | break; | |
886 | } | |
887 | else { | |
1b6737cc | 888 | SV ** const svp = av_fetch((AV*)sv, SvIV(cSVOPx_sv(kid)), FALSE); |
29489e7c DM |
889 | if (!svp || *svp != uninit_sv) |
890 | break; | |
891 | } | |
892 | } | |
893 | if (obase->op_type == OP_HELEM) | |
1b6737cc | 894 | return varname(gv, "%", o->op_targ, |
29489e7c DM |
895 | cSVOPx_sv(kid), 0, FUV_SUBSCRIPT_HASH); |
896 | else | |
1b6737cc | 897 | return varname(gv, "@", o->op_targ, Nullsv, |
29489e7c DM |
898 | SvIV(cSVOPx_sv(kid)), FUV_SUBSCRIPT_ARRAY); |
899 | ; | |
900 | } | |
901 | else { | |
902 | /* index is an expression; | |
903 | * attempt to find a match within the aggregate */ | |
904 | if (obase->op_type == OP_HELEM) { | |
53c1dcc0 | 905 | SV * const keysv = S_find_hash_subscript(aTHX_ (HV*)sv, uninit_sv); |
29489e7c | 906 | if (keysv) |
1b6737cc | 907 | return varname(gv, "%", o->op_targ, |
29489e7c DM |
908 | keysv, 0, FUV_SUBSCRIPT_HASH); |
909 | } | |
910 | else { | |
f54cb97a | 911 | const I32 index = S_find_array_subscript(aTHX_ (AV*)sv, uninit_sv); |
29489e7c | 912 | if (index >= 0) |
1b6737cc | 913 | return varname(gv, "@", o->op_targ, |
29489e7c DM |
914 | Nullsv, index, FUV_SUBSCRIPT_ARRAY); |
915 | } | |
916 | if (match) | |
917 | break; | |
1b6737cc | 918 | return varname(gv, |
29489e7c DM |
919 | (o->op_type == OP_PADAV || o->op_type == OP_RV2AV) |
920 | ? "@" : "%", | |
921 | o->op_targ, Nullsv, 0, FUV_SUBSCRIPT_WITHIN); | |
922 | } | |
923 | ||
924 | break; | |
925 | ||
926 | case OP_AASSIGN: | |
927 | /* only examine RHS */ | |
928 | return find_uninit_var(cBINOPx(obase)->op_first, uninit_sv, match); | |
929 | ||
930 | case OP_OPEN: | |
931 | o = cUNOPx(obase)->op_first; | |
932 | if (o->op_type == OP_PUSHMARK) | |
933 | o = o->op_sibling; | |
934 | ||
935 | if (!o->op_sibling) { | |
936 | /* one-arg version of open is highly magical */ | |
937 | ||
938 | if (o->op_type == OP_GV) { /* open FOO; */ | |
939 | gv = cGVOPx_gv(o); | |
940 | if (match && GvSV(gv) != uninit_sv) | |
941 | break; | |
1b6737cc | 942 | return varname(gv, "$", 0, |
29489e7c DM |
943 | Nullsv, 0, FUV_SUBSCRIPT_NONE); |
944 | } | |
945 | /* other possibilities not handled are: | |
946 | * open $x; or open my $x; should return '${*$x}' | |
947 | * open expr; should return '$'.expr ideally | |
948 | */ | |
949 | break; | |
950 | } | |
951 | goto do_op; | |
952 | ||
953 | /* ops where $_ may be an implicit arg */ | |
954 | case OP_TRANS: | |
955 | case OP_SUBST: | |
956 | case OP_MATCH: | |
957 | if ( !(obase->op_flags & OPf_STACKED)) { | |
958 | if (uninit_sv == ((obase->op_private & OPpTARGET_MY) | |
959 | ? PAD_SVl(obase->op_targ) | |
960 | : DEFSV)) | |
961 | { | |
962 | sv = sv_newmortal(); | |
616d8c9c | 963 | sv_setpvn(sv, "$_", 2); |
29489e7c DM |
964 | return sv; |
965 | } | |
966 | } | |
967 | goto do_op; | |
968 | ||
969 | case OP_PRTF: | |
970 | case OP_PRINT: | |
971 | /* skip filehandle as it can't produce 'undef' warning */ | |
972 | o = cUNOPx(obase)->op_first; | |
973 | if ((obase->op_flags & OPf_STACKED) && o->op_type == OP_PUSHMARK) | |
974 | o = o->op_sibling->op_sibling; | |
975 | goto do_op2; | |
976 | ||
977 | ||
e21bd382 | 978 | case OP_RV2SV: |
29489e7c DM |
979 | case OP_CUSTOM: |
980 | case OP_ENTERSUB: | |
981 | match = 1; /* XS or custom code could trigger random warnings */ | |
982 | goto do_op; | |
983 | ||
984 | case OP_SCHOMP: | |
985 | case OP_CHOMP: | |
986 | if (SvROK(PL_rs) && uninit_sv == SvRV(PL_rs)) | |
987 | return sv_2mortal(newSVpv("${$/}", 0)); | |
988 | /* FALL THROUGH */ | |
989 | ||
990 | default: | |
991 | do_op: | |
992 | if (!(obase->op_flags & OPf_KIDS)) | |
993 | break; | |
994 | o = cUNOPx(obase)->op_first; | |
995 | ||
996 | do_op2: | |
997 | if (!o) | |
998 | break; | |
999 | ||
1000 | /* if all except one arg are constant, or have no side-effects, | |
1001 | * or are optimized away, then it's unambiguous */ | |
1002 | o2 = Nullop; | |
1003 | for (kid=o; kid; kid = kid->op_sibling) { | |
1004 | if (kid && | |
1005 | ( (kid->op_type == OP_CONST && SvOK(cSVOPx_sv(kid))) | |
1006 | || (kid->op_type == OP_NULL && ! (kid->op_flags & OPf_KIDS)) | |
1007 | || (kid->op_type == OP_PUSHMARK) | |
1008 | ) | |
1009 | ) | |
1010 | continue; | |
1011 | if (o2) { /* more than one found */ | |
1012 | o2 = Nullop; | |
1013 | break; | |
1014 | } | |
1015 | o2 = kid; | |
1016 | } | |
1017 | if (o2) | |
1018 | return find_uninit_var(o2, uninit_sv, match); | |
1019 | ||
1020 | /* scan all args */ | |
1021 | while (o) { | |
1022 | sv = find_uninit_var(o, uninit_sv, 1); | |
1023 | if (sv) | |
1024 | return sv; | |
1025 | o = o->op_sibling; | |
1026 | } | |
1027 | break; | |
1028 | } | |
1029 | return Nullsv; | |
1030 | } | |
1031 | ||
1032 | ||
645c22ef DM |
1033 | /* |
1034 | =for apidoc report_uninit | |
1035 | ||
1036 | Print appropriate "Use of uninitialized variable" warning | |
1037 | ||
1038 | =cut | |
1039 | */ | |
1040 | ||
1d7c1841 | 1041 | void |
29489e7c DM |
1042 | Perl_report_uninit(pTHX_ SV* uninit_sv) |
1043 | { | |
1044 | if (PL_op) { | |
112dcc46 | 1045 | SV* varname = Nullsv; |
29489e7c DM |
1046 | if (uninit_sv) { |
1047 | varname = find_uninit_var(PL_op, uninit_sv,0); | |
1048 | if (varname) | |
1049 | sv_insert(varname, 0, 0, " ", 1); | |
1050 | } | |
9014280d | 1051 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
93524f2b | 1052 | varname ? SvPV_nolen_const(varname) : "", |
29489e7c DM |
1053 | " in ", OP_DESC(PL_op)); |
1054 | } | |
1d7c1841 | 1055 | else |
29489e7c DM |
1056 | Perl_warner(aTHX_ packWARN(WARN_UNINITIALIZED), PL_warn_uninit, |
1057 | "", "", ""); | |
1d7c1841 GS |
1058 | } |
1059 | ||
de042e1d | 1060 | STATIC void * |
e3bbdc67 | 1061 | S_more_bodies (pTHX_ void **arena_root, void **root, size_t size) |
cac9b346 | 1062 | { |
e3bbdc67 NC |
1063 | char *start; |
1064 | const char *end; | |
53c1dcc0 | 1065 | const size_t count = PERL_ARENA_SIZE/size; |
e3bbdc67 NC |
1066 | New(0, start, count*size, char); |
1067 | *((void **) start) = *arena_root; | |
1068 | *arena_root = (void *)start; | |
cac9b346 | 1069 | |
e3bbdc67 | 1070 | end = start + (count-1) * size; |
cac9b346 | 1071 | |
e3bbdc67 NC |
1072 | /* The initial slot is used to link the arenas together, so it isn't to be |
1073 | linked into the list of ready-to-use bodies. */ | |
cac9b346 | 1074 | |
e3bbdc67 | 1075 | start += size; |
cac9b346 | 1076 | |
e3bbdc67 | 1077 | *root = (void *)start; |
cac9b346 | 1078 | |
e3bbdc67 | 1079 | while (start < end) { |
53c1dcc0 | 1080 | char * const next = start + size; |
e3bbdc67 NC |
1081 | *(void**) start = (void *)next; |
1082 | start = next; | |
cac9b346 | 1083 | } |
e3bbdc67 | 1084 | *(void **)start = 0; |
de042e1d NC |
1085 | |
1086 | return *root; | |
cac9b346 NC |
1087 | } |
1088 | ||
aeb18a1e | 1089 | /* grab a new thing from the free list, allocating more if necessary */ |
645c22ef | 1090 | |
aeb18a1e | 1091 | STATIC void * |
dd690478 | 1092 | S_new_body(pTHX_ void **arena_root, void **root, size_t size) |
932e9ff9 | 1093 | { |
aeb18a1e | 1094 | void *xpv; |
932e9ff9 | 1095 | LOCK_SV_MUTEX; |
aeb18a1e NC |
1096 | xpv = *root ? *root : S_more_bodies(aTHX_ arena_root, root, size); |
1097 | *root = *(void**)xpv; | |
932e9ff9 | 1098 | UNLOCK_SV_MUTEX; |
dd690478 | 1099 | return xpv; |
932e9ff9 VB |
1100 | } |
1101 | ||
aeb18a1e | 1102 | /* return a thing to the free list */ |
645c22ef | 1103 | |
cb4415b8 NC |
1104 | #define del_body(thing, root) \ |
1105 | STMT_START { \ | |
1106 | LOCK_SV_MUTEX; \ | |
1107 | *(void **)thing = *root; \ | |
1108 | *root = (void*)thing; \ | |
1109 | UNLOCK_SV_MUTEX; \ | |
1110 | } STMT_END | |
932e9ff9 | 1111 | |
aeb18a1e NC |
1112 | /* Conventionally we simply malloc() a big block of memory, then divide it |
1113 | up into lots of the thing that we're allocating. | |
645c22ef | 1114 | |
aeb18a1e NC |
1115 | This macro will expand to call to S_new_body. So for XPVBM (with ithreads), |
1116 | it would become | |
932e9ff9 | 1117 | |
aeb18a1e NC |
1118 | S_new_body(my_perl, (void**)&(my_perl->Ixpvbm_arenaroot), |
1119 | (void**)&(my_perl->Ixpvbm_root), sizeof(XPVBM), 0) | |
1120 | */ | |
645c22ef | 1121 | |
aeb18a1e NC |
1122 | #define new_body(TYPE,lctype) \ |
1123 | S_new_body(aTHX_ (void**)&PL_ ## lctype ## _arenaroot, \ | |
1124 | (void**)&PL_ ## lctype ## _root, \ | |
dd690478 NC |
1125 | sizeof(TYPE)) |
1126 | ||
cb4415b8 NC |
1127 | #define del_body_type(p,TYPE,lctype) \ |
1128 | del_body((void*)p, (void**)&PL_ ## lctype ## _root) | |
aeb18a1e NC |
1129 | |
1130 | /* But for some types, we cheat. The type starts with some members that are | |
1131 | never accessed. So we allocate the substructure, starting at the first used | |
1132 | member, then adjust the pointer back in memory by the size of the bit not | |
1133 | allocated, so it's as if we allocated the full structure. | |
1134 | (But things will all go boom if you write to the part that is "not there", | |
1135 | because you'll be overwriting the last members of the preceding structure | |
1136 | in memory.) | |
1137 | ||
1138 | We calculate the correction using the STRUCT_OFFSET macro. For example, if | |
1139 | xpv_allocated is the same structure as XPV then the two OFFSETs sum to zero, | |
1140 | and the pointer is unchanged. If the allocated structure is smaller (no | |
1141 | initial NV actually allocated) then the net effect is to subtract the size | |
1142 | of the NV from the pointer, to return a new pointer as if an initial NV were | |
1143 | actually allocated. | |
1144 | ||
1145 | This is the same trick as was used for NV and IV bodies. Ironically it | |
1146 | doesn't need to be used for NV bodies any more, because NV is now at the | |
1147 | start of the structure. IV bodies don't need it either, because they are | |
1148 | no longer allocated. */ | |
1149 | ||
1150 | #define new_body_allocated(TYPE,lctype,member) \ | |
dd690478 NC |
1151 | (void*)((char*)S_new_body(aTHX_ (void**)&PL_ ## lctype ## _arenaroot, \ |
1152 | (void**)&PL_ ## lctype ## _root, \ | |
1153 | sizeof(lctype ## _allocated)) - \ | |
1154 | STRUCT_OFFSET(TYPE, member) \ | |
1155 | + STRUCT_OFFSET(lctype ## _allocated, member)) | |
aeb18a1e NC |
1156 | |
1157 | ||
aeb18a1e | 1158 | #define del_body_allocated(p,TYPE,lctype,member) \ |
cb4415b8 NC |
1159 | del_body((void*)((char*)p + STRUCT_OFFSET(TYPE, member) \ |
1160 | - STRUCT_OFFSET(lctype ## _allocated, member)), \ | |
1161 | (void**)&PL_ ## lctype ## _root) | |
932e9ff9 | 1162 | |
7bab3ede MB |
1163 | #define my_safemalloc(s) (void*)safemalloc(s) |
1164 | #define my_safefree(p) safefree((char*)p) | |
463ee0b2 | 1165 | |
d33b2eba | 1166 | #ifdef PURIFY |
463ee0b2 | 1167 | |
d33b2eba GS |
1168 | #define new_XNV() my_safemalloc(sizeof(XPVNV)) |
1169 | #define del_XNV(p) my_safefree(p) | |
463ee0b2 | 1170 | |
d33b2eba GS |
1171 | #define new_XPV() my_safemalloc(sizeof(XPV)) |
1172 | #define del_XPV(p) my_safefree(p) | |
9b94d1dd | 1173 | |
d33b2eba GS |
1174 | #define new_XPVIV() my_safemalloc(sizeof(XPVIV)) |
1175 | #define del_XPVIV(p) my_safefree(p) | |
932e9ff9 | 1176 | |
d33b2eba GS |
1177 | #define new_XPVNV() my_safemalloc(sizeof(XPVNV)) |
1178 | #define del_XPVNV(p) my_safefree(p) | |
932e9ff9 | 1179 | |
d33b2eba GS |
1180 | #define new_XPVCV() my_safemalloc(sizeof(XPVCV)) |
1181 | #define del_XPVCV(p) my_safefree(p) | |
932e9ff9 | 1182 | |
d33b2eba GS |
1183 | #define new_XPVAV() my_safemalloc(sizeof(XPVAV)) |
1184 | #define del_XPVAV(p) my_safefree(p) | |
1185 | ||
1186 | #define new_XPVHV() my_safemalloc(sizeof(XPVHV)) | |
1187 | #define del_XPVHV(p) my_safefree(p) | |
1c846c1f | 1188 | |
d33b2eba GS |
1189 | #define new_XPVMG() my_safemalloc(sizeof(XPVMG)) |
1190 | #define del_XPVMG(p) my_safefree(p) | |
1191 | ||
727879eb NC |
1192 | #define new_XPVGV() my_safemalloc(sizeof(XPVGV)) |
1193 | #define del_XPVGV(p) my_safefree(p) | |
1194 | ||
d33b2eba GS |
1195 | #define new_XPVLV() my_safemalloc(sizeof(XPVLV)) |
1196 | #define del_XPVLV(p) my_safefree(p) | |
1197 | ||
1198 | #define new_XPVBM() my_safemalloc(sizeof(XPVBM)) | |
1199 | #define del_XPVBM(p) my_safefree(p) | |
1200 | ||
1201 | #else /* !PURIFY */ | |
1202 | ||
aeb18a1e | 1203 | #define new_XNV() new_body(NV, xnv) |
cb4415b8 | 1204 | #define del_XNV(p) del_body_type(p, NV, xnv) |
9b94d1dd | 1205 | |
aeb18a1e NC |
1206 | #define new_XPV() new_body_allocated(XPV, xpv, xpv_cur) |
1207 | #define del_XPV(p) del_body_allocated(p, XPV, xpv, xpv_cur) | |
d33b2eba | 1208 | |
aeb18a1e NC |
1209 | #define new_XPVIV() new_body_allocated(XPVIV, xpviv, xpv_cur) |
1210 | #define del_XPVIV(p) del_body_allocated(p, XPVIV, xpviv, xpv_cur) | |
d33b2eba | 1211 | |
aeb18a1e | 1212 | #define new_XPVNV() new_body(XPVNV, xpvnv) |
cb4415b8 | 1213 | #define del_XPVNV(p) del_body_type(p, XPVNV, xpvnv) |
d33b2eba | 1214 | |
aeb18a1e | 1215 | #define new_XPVCV() new_body(XPVCV, xpvcv) |
cb4415b8 | 1216 | #define del_XPVCV(p) del_body_type(p, XPVCV, xpvcv) |
d33b2eba | 1217 | |
aeb18a1e NC |
1218 | #define new_XPVAV() new_body_allocated(XPVAV, xpvav, xav_fill) |
1219 | #define del_XPVAV(p) del_body_allocated(p, XPVAV, xpvav, xav_fill) | |
d33b2eba | 1220 | |
aeb18a1e NC |
1221 | #define new_XPVHV() new_body_allocated(XPVHV, xpvhv, xhv_fill) |
1222 | #define del_XPVHV(p) del_body_allocated(p, XPVHV, xpvhv, xhv_fill) | |
1c846c1f | 1223 | |
aeb18a1e | 1224 | #define new_XPVMG() new_body(XPVMG, xpvmg) |
cb4415b8 | 1225 | #define del_XPVMG(p) del_body_type(p, XPVMG, xpvmg) |
d33b2eba | 1226 | |
aeb18a1e | 1227 | #define new_XPVGV() new_body(XPVGV, xpvgv) |
cb4415b8 | 1228 | #define del_XPVGV(p) del_body_type(p, XPVGV, xpvgv) |
727879eb | 1229 | |
aeb18a1e | 1230 | #define new_XPVLV() new_body(XPVLV, xpvlv) |
cb4415b8 | 1231 | #define del_XPVLV(p) del_body_type(p, XPVLV, xpvlv) |
d33b2eba | 1232 | |
aeb18a1e | 1233 | #define new_XPVBM() new_body(XPVBM, xpvbm) |
cb4415b8 | 1234 | #define del_XPVBM(p) del_body_type(p, XPVBM, xpvbm) |
d33b2eba GS |
1235 | |
1236 | #endif /* PURIFY */ | |
9b94d1dd | 1237 | |
d33b2eba GS |
1238 | #define new_XPVFM() my_safemalloc(sizeof(XPVFM)) |
1239 | #define del_XPVFM(p) my_safefree(p) | |
1c846c1f | 1240 | |
d33b2eba GS |
1241 | #define new_XPVIO() my_safemalloc(sizeof(XPVIO)) |
1242 | #define del_XPVIO(p) my_safefree(p) | |
8990e307 | 1243 | |
954c1994 GS |
1244 | /* |
1245 | =for apidoc sv_upgrade | |
1246 | ||
ff276b08 | 1247 | Upgrade an SV to a more complex form. Generally adds a new body type to the |
645c22ef | 1248 | SV, then copies across as much information as possible from the old body. |
ff276b08 | 1249 | You generally want to use the C<SvUPGRADE> macro wrapper. See also C<svtype>. |
954c1994 GS |
1250 | |
1251 | =cut | |
1252 | */ | |
1253 | ||
63f97190 | 1254 | void |
864dbfa3 | 1255 | Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt) |
79072805 | 1256 | { |
9a085840 | 1257 | void** old_body_arena; |
878cc751 | 1258 | size_t old_body_offset; |
4cbc76b1 | 1259 | size_t old_body_length; /* Well, the length to copy. */ |
878cc751 | 1260 | void* old_body; |
16b305e3 NC |
1261 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
1262 | /* If NV 0.0 is store as all bits 0 then Zero() already creates a correct | |
1263 | 0.0 for us. */ | |
4cbc76b1 | 1264 | bool zero_nv = TRUE; |
16b305e3 | 1265 | #endif |
403d36eb NC |
1266 | void* new_body; |
1267 | size_t new_body_length; | |
1268 | size_t new_body_offset; | |
1269 | void** new_body_arena; | |
1270 | void** new_body_arenaroot; | |
53c1dcc0 | 1271 | const U32 old_type = SvTYPE(sv); |
79072805 | 1272 | |
765f542d NC |
1273 | if (mt != SVt_PV && SvIsCOW(sv)) { |
1274 | sv_force_normal_flags(sv, 0); | |
f130fd45 NIS |
1275 | } |
1276 | ||
79072805 | 1277 | if (SvTYPE(sv) == mt) |
63f97190 | 1278 | return; |
79072805 | 1279 | |
f5282e15 | 1280 | if (SvTYPE(sv) > mt) |
921edb34 RGS |
1281 | Perl_croak(aTHX_ "sv_upgrade from type %d down to type %d", |
1282 | (int)SvTYPE(sv), (int)mt); | |
f5282e15 | 1283 | |
d2e56290 | 1284 | |
878cc751 NC |
1285 | old_body = SvANY(sv); |
1286 | old_body_arena = 0; | |
1287 | old_body_offset = 0; | |
4cbc76b1 | 1288 | old_body_length = 0; |
403d36eb NC |
1289 | new_body_offset = 0; |
1290 | new_body_length = ~0; | |
1291 | ||
1292 | /* Copying structures onto other structures that have been neatly zeroed | |
1293 | has a subtle gotcha. Consider XPVMG | |
1294 | ||
1295 | +------+------+------+------+------+-------+-------+ | |
1296 | | NV | CUR | LEN | IV | MAGIC | STASH | | |
1297 | +------+------+------+------+------+-------+-------+ | |
1298 | 0 4 8 12 16 20 24 28 | |
1299 | ||
1300 | where NVs are aligned to 8 bytes, so that sizeof that structure is | |
1301 | actually 32 bytes long, with 4 bytes of padding at the end: | |
1302 | ||
1303 | +------+------+------+------+------+-------+-------+------+ | |
1304 | | NV | CUR | LEN | IV | MAGIC | STASH | ??? | | |
1305 | +------+------+------+------+------+-------+-------+------+ | |
1306 | 0 4 8 12 16 20 24 28 32 | |
1307 | ||
1308 | so what happens if you allocate memory for this structure: | |
1309 | ||
1310 | +------+------+------+------+------+-------+-------+------+------+... | |
1311 | | NV | CUR | LEN | IV | MAGIC | STASH | GP | NAME | | |
1312 | +------+------+------+------+------+-------+-------+------+------+... | |
1313 | 0 4 8 12 16 20 24 28 32 36 | |
1314 | ||
1315 | zero it, then copy sizeof(XPVMG) bytes on top of it? Not quite what you | |
1316 | expect, because you copy the area marked ??? onto GP. Now, ??? may have | |
1317 | started out as zero once, but it's quite possible that it isn't. So now, | |
1318 | rather than a nicely zeroed GP, you have it pointing somewhere random. | |
1319 | Bugs ensue. | |
1320 | ||
1321 | (In fact, GP ends up pointing at a previous GP structure, because the | |
1322 | principle cause of the padding in XPVMG getting garbage is a copy of | |
1323 | sizeof(XPVMG) bytes from a XPVGV structure in sv_unglob) | |
1324 | ||
1325 | So we are careful and work out the size of used parts of all the | |
1326 | structures. */ | |
878cc751 | 1327 | |
79072805 LW |
1328 | switch (SvTYPE(sv)) { |
1329 | case SVt_NULL: | |
79072805 | 1330 | break; |
79072805 | 1331 | case SVt_IV: |
ed6116ce | 1332 | if (mt == SVt_NV) |
463ee0b2 | 1333 | mt = SVt_PVNV; |
ed6116ce LW |
1334 | else if (mt < SVt_PVIV) |
1335 | mt = SVt_PVIV; | |
4cbc76b1 NC |
1336 | old_body_offset = STRUCT_OFFSET(XPVIV, xiv_iv); |
1337 | old_body_length = sizeof(IV); | |
79072805 LW |
1338 | break; |
1339 | case SVt_NV: | |
9a085840 | 1340 | old_body_arena = (void **) &PL_xnv_root; |
4cbc76b1 | 1341 | old_body_length = sizeof(NV); |
16b305e3 | 1342 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
4cbc76b1 | 1343 | zero_nv = FALSE; |
16b305e3 | 1344 | #endif |
ed6116ce | 1345 | if (mt < SVt_PVNV) |
79072805 LW |
1346 | mt = SVt_PVNV; |
1347 | break; | |
ed6116ce | 1348 | case SVt_RV: |
ed6116ce | 1349 | break; |
79072805 | 1350 | case SVt_PV: |
9a085840 | 1351 | old_body_arena = (void **) &PL_xpv_root; |
878cc751 NC |
1352 | old_body_offset = STRUCT_OFFSET(XPV, xpv_cur) |
1353 | - STRUCT_OFFSET(xpv_allocated, xpv_cur); | |
403d36eb NC |
1354 | old_body_length = STRUCT_OFFSET(XPV, xpv_len) |
1355 | + sizeof (((XPV*)SvANY(sv))->xpv_len) | |
1356 | - old_body_offset; | |
748a9306 LW |
1357 | if (mt <= SVt_IV) |
1358 | mt = SVt_PVIV; | |
1359 | else if (mt == SVt_NV) | |
1360 | mt = SVt_PVNV; | |
79072805 LW |
1361 | break; |
1362 | case SVt_PVIV: | |
9a085840 | 1363 | old_body_arena = (void **) &PL_xpviv_root; |
878cc751 NC |
1364 | old_body_offset = STRUCT_OFFSET(XPVIV, xpv_cur) |
1365 | - STRUCT_OFFSET(xpviv_allocated, xpv_cur); | |
403d36eb NC |
1366 | old_body_length = STRUCT_OFFSET(XPVIV, xiv_u) |
1367 | + sizeof (((XPVIV*)SvANY(sv))->xiv_u) | |
1368 | - old_body_offset; | |
79072805 LW |
1369 | break; |
1370 | case SVt_PVNV: | |
9a085840 | 1371 | old_body_arena = (void **) &PL_xpvnv_root; |
403d36eb NC |
1372 | old_body_length = STRUCT_OFFSET(XPVNV, xiv_u) |
1373 | + sizeof (((XPVNV*)SvANY(sv))->xiv_u); | |
16b305e3 | 1374 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
4cbc76b1 | 1375 | zero_nv = FALSE; |
16b305e3 | 1376 | #endif |
79072805 LW |
1377 | break; |
1378 | case SVt_PVMG: | |
0ec50a73 NC |
1379 | /* Because the XPVMG of PL_mess_sv isn't allocated from the arena, |
1380 | there's no way that it can be safely upgraded, because perl.c | |
1381 | expects to Safefree(SvANY(PL_mess_sv)) */ | |
1382 | assert(sv != PL_mess_sv); | |
bce8f412 NC |
1383 | /* This flag bit is used to mean other things in other scalar types. |
1384 | Given that it only has meaning inside the pad, it shouldn't be set | |
1385 | on anything that can get upgraded. */ | |
1386 | assert((SvFLAGS(sv) & SVpad_TYPED) == 0); | |
9a085840 | 1387 | old_body_arena = (void **) &PL_xpvmg_root; |
403d36eb NC |
1388 | old_body_length = STRUCT_OFFSET(XPVMG, xmg_stash) |
1389 | + sizeof (((XPVMG*)SvANY(sv))->xmg_stash); | |
16b305e3 | 1390 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
4cbc76b1 | 1391 | zero_nv = FALSE; |
16b305e3 | 1392 | #endif |
79072805 LW |
1393 | break; |
1394 | default: | |
cea2e8a9 | 1395 | Perl_croak(aTHX_ "Can't upgrade that kind of scalar"); |
79072805 LW |
1396 | } |
1397 | ||
ffb05e06 NC |
1398 | SvFLAGS(sv) &= ~SVTYPEMASK; |
1399 | SvFLAGS(sv) |= mt; | |
1400 | ||
79072805 LW |
1401 | switch (mt) { |
1402 | case SVt_NULL: | |
cea2e8a9 | 1403 | Perl_croak(aTHX_ "Can't upgrade to undef"); |
79072805 | 1404 | case SVt_IV: |
4cbc76b1 | 1405 | assert(old_type == SVt_NULL); |
339049b0 | 1406 | SvANY(sv) = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
403d36eb | 1407 | SvIV_set(sv, 0); |
85274cbc | 1408 | return; |
79072805 | 1409 | case SVt_NV: |
4cbc76b1 | 1410 | assert(old_type == SVt_NULL); |
79072805 | 1411 | SvANY(sv) = new_XNV(); |
403d36eb | 1412 | SvNV_set(sv, 0); |
85274cbc | 1413 | return; |
ed6116ce | 1414 | case SVt_RV: |
4cbc76b1 | 1415 | assert(old_type == SVt_NULL); |
339049b0 | 1416 | SvANY(sv) = &sv->sv_u.svu_rv; |
403d36eb | 1417 | SvRV_set(sv, 0); |
85274cbc | 1418 | return; |
79072805 LW |
1419 | case SVt_PVHV: |
1420 | SvANY(sv) = new_XPVHV(); | |
463ee0b2 LW |
1421 | HvFILL(sv) = 0; |
1422 | HvMAX(sv) = 0; | |
8aacddc1 | 1423 | HvTOTALKEYS(sv) = 0; |
bd4b1eb5 | 1424 | |
2068cd4d NC |
1425 | goto hv_av_common; |
1426 | ||
1427 | case SVt_PVAV: | |
1428 | SvANY(sv) = new_XPVAV(); | |
1429 | AvMAX(sv) = -1; | |
1430 | AvFILLp(sv) = -1; | |
1431 | AvALLOC(sv) = 0; | |
1432 | AvREAL_only(sv); | |
1433 | ||
1434 | hv_av_common: | |
1435 | /* SVt_NULL isn't the only thing upgraded to AV or HV. | |
1436 | The target created by newSVrv also is, and it can have magic. | |
1437 | However, it never has SvPVX set. | |
1438 | */ | |
1439 | if (old_type >= SVt_RV) { | |
1440 | assert(SvPVX_const(sv) == 0); | |
8bd4d4c5 | 1441 | } |
2068cd4d NC |
1442 | |
1443 | /* Could put this in the else clause below, as PVMG must have SvPVX | |
1444 | 0 already (the assertion above) */ | |
bd4b1eb5 | 1445 | SvPV_set(sv, (char*)0); |
2068cd4d NC |
1446 | |
1447 | if (old_type >= SVt_PVMG) { | |
1448 | SvMAGIC_set(sv, ((XPVMG*)old_body)->xmg_magic); | |
1449 | SvSTASH_set(sv, ((XPVMG*)old_body)->xmg_stash); | |
1450 | } else { | |
1451 | SvMAGIC_set(sv, 0); | |
1452 | SvSTASH_set(sv, 0); | |
1453 | } | |
79072805 | 1454 | break; |
bd4b1eb5 NC |
1455 | |
1456 | case SVt_PVIO: | |
403d36eb NC |
1457 | new_body = new_XPVIO(); |
1458 | new_body_length = sizeof(XPVIO); | |
1459 | goto zero; | |
bd4b1eb5 | 1460 | case SVt_PVFM: |
403d36eb NC |
1461 | new_body = new_XPVFM(); |
1462 | new_body_length = sizeof(XPVFM); | |
1463 | goto zero; | |
1464 | ||
bd4b1eb5 | 1465 | case SVt_PVBM: |
403d36eb NC |
1466 | new_body_length = sizeof(XPVBM); |
1467 | new_body_arena = (void **) &PL_xpvbm_root; | |
1468 | new_body_arenaroot = (void **) &PL_xpvbm_arenaroot; | |
1469 | goto new_body; | |
bd4b1eb5 | 1470 | case SVt_PVGV: |
403d36eb NC |
1471 | new_body_length = sizeof(XPVGV); |
1472 | new_body_arena = (void **) &PL_xpvgv_root; | |
1473 | new_body_arenaroot = (void **) &PL_xpvgv_arenaroot; | |
1474 | goto new_body; | |
79072805 | 1475 | case SVt_PVCV: |
403d36eb NC |
1476 | new_body_length = sizeof(XPVCV); |
1477 | new_body_arena = (void **) &PL_xpvcv_root; | |
1478 | new_body_arenaroot = (void **) &PL_xpvcv_arenaroot; | |
1479 | goto new_body; | |
bd4b1eb5 | 1480 | case SVt_PVLV: |
403d36eb NC |
1481 | new_body_length = sizeof(XPVLV); |
1482 | new_body_arena = (void **) &PL_xpvlv_root; | |
1483 | new_body_arenaroot = (void **) &PL_xpvlv_arenaroot; | |
1484 | goto new_body; | |
1485 | case SVt_PVMG: | |
1486 | new_body_length = sizeof(XPVMG); | |
1487 | new_body_arena = (void **) &PL_xpvmg_root; | |
1488 | new_body_arenaroot = (void **) &PL_xpvmg_arenaroot; | |
1489 | goto new_body; | |
1490 | case SVt_PVNV: | |
1491 | new_body_length = sizeof(XPVNV); | |
1492 | new_body_arena = (void **) &PL_xpvnv_root; | |
1493 | new_body_arenaroot = (void **) &PL_xpvnv_arenaroot; | |
1494 | goto new_body; | |
1495 | case SVt_PVIV: | |
1496 | new_body_offset = STRUCT_OFFSET(XPVIV, xpv_cur) | |
1497 | - STRUCT_OFFSET(xpviv_allocated, xpv_cur); | |
1498 | new_body_length = sizeof(XPVIV) - new_body_offset; | |
1499 | new_body_arena = (void **) &PL_xpviv_root; | |
1500 | new_body_arenaroot = (void **) &PL_xpviv_arenaroot; | |
1501 | /* XXX Is this still needed? Was it ever needed? Surely as there is | |
1502 | no route from NV to PVIV, NOK can never be true */ | |
1503 | if (SvNIOK(sv)) | |
1504 | (void)SvIOK_on(sv); | |
1505 | SvNOK_off(sv); | |
1506 | goto new_body_no_NV; | |
1507 | case SVt_PV: | |
1508 | new_body_offset = STRUCT_OFFSET(XPV, xpv_cur) | |
1509 | - STRUCT_OFFSET(xpv_allocated, xpv_cur); | |
1510 | new_body_length = sizeof(XPV) - new_body_offset; | |
1511 | new_body_arena = (void **) &PL_xpv_root; | |
1512 | new_body_arenaroot = (void **) &PL_xpv_arenaroot; | |
1513 | new_body_no_NV: | |
1514 | /* PV and PVIV don't have an NV slot. */ | |
16b305e3 | 1515 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
403d36eb | 1516 | zero_nv = FALSE; |
16b305e3 | 1517 | #endif |
403d36eb | 1518 | |
16b305e3 NC |
1519 | new_body: |
1520 | assert(new_body_length); | |
403d36eb | 1521 | #ifndef PURIFY |
16b305e3 NC |
1522 | /* This points to the start of the allocated area. */ |
1523 | new_body = S_new_body(aTHX_ new_body_arenaroot, new_body_arena, | |
1524 | new_body_length); | |
403d36eb | 1525 | #else |
16b305e3 NC |
1526 | /* We always allocated the full length item with PURIFY */ |
1527 | new_body_length += new_body_offset; | |
1528 | new_body_offset = 0; | |
1529 | new_body = my_safemalloc(new_body_length); | |
403d36eb NC |
1530 | |
1531 | #endif | |
16b305e3 NC |
1532 | zero: |
1533 | Zero(new_body, new_body_length, char); | |
1534 | new_body = ((char *)new_body) - new_body_offset; | |
1535 | SvANY(sv) = new_body; | |
1536 | ||
1537 | if (old_body_length) { | |
1538 | Copy((char *)old_body + old_body_offset, | |
1539 | (char *)new_body + old_body_offset, | |
1540 | old_body_length, char); | |
1541 | } | |
403d36eb | 1542 | |
16b305e3 NC |
1543 | #ifndef NV_ZERO_IS_ALLBITS_ZERO |
1544 | if (zero_nv) | |
1545 | SvNV_set(sv, 0); | |
1546 | #endif | |
403d36eb | 1547 | |
16b305e3 NC |
1548 | if (mt == SVt_PVIO) |
1549 | IoPAGE_LEN(sv) = 60; | |
1550 | if (old_type < SVt_RV) | |
1551 | SvPV_set(sv, 0); | |
8990e307 | 1552 | break; |
403d36eb NC |
1553 | default: |
1554 | Perl_croak(aTHX_ "panic: sv_upgrade to unknown type %lu", mt); | |
8990e307 | 1555 | } |
878cc751 NC |
1556 | |
1557 | ||
1558 | if (old_body_arena) { | |
1559 | #ifdef PURIFY | |
ee6954bb | 1560 | my_safefree(old_body); |
878cc751 | 1561 | #else |
cb4415b8 NC |
1562 | del_body((void*)((char*)old_body + old_body_offset), |
1563 | old_body_arena); | |
878cc751 | 1564 | #endif |
2068cd4d | 1565 | } |
79072805 LW |
1566 | } |
1567 | ||
645c22ef DM |
1568 | /* |
1569 | =for apidoc sv_backoff | |
1570 | ||
1571 | Remove any string offset. You should normally use the C<SvOOK_off> macro | |
1572 | wrapper instead. | |
1573 | ||
1574 | =cut | |
1575 | */ | |
1576 | ||
79072805 | 1577 | int |
864dbfa3 | 1578 | Perl_sv_backoff(pTHX_ register SV *sv) |
79072805 LW |
1579 | { |
1580 | assert(SvOOK(sv)); | |
b79f7545 NC |
1581 | assert(SvTYPE(sv) != SVt_PVHV); |
1582 | assert(SvTYPE(sv) != SVt_PVAV); | |
463ee0b2 | 1583 | if (SvIVX(sv)) { |
53c1dcc0 | 1584 | const char * const s = SvPVX_const(sv); |
b162af07 | 1585 | SvLEN_set(sv, SvLEN(sv) + SvIVX(sv)); |
f880fe2f | 1586 | SvPV_set(sv, SvPVX(sv) - SvIVX(sv)); |
79072805 | 1587 | SvIV_set(sv, 0); |
463ee0b2 | 1588 | Move(s, SvPVX(sv), SvCUR(sv)+1, char); |
79072805 LW |
1589 | } |
1590 | SvFLAGS(sv) &= ~SVf_OOK; | |
a0d0e21e | 1591 | return 0; |
79072805 LW |
1592 | } |
1593 | ||
954c1994 GS |
1594 | /* |
1595 | =for apidoc sv_grow | |
1596 | ||
645c22ef DM |
1597 | Expands the character buffer in the SV. If necessary, uses C<sv_unref> and |
1598 | upgrades the SV to C<SVt_PV>. Returns a pointer to the character buffer. | |
1599 | Use the C<SvGROW> wrapper instead. | |
954c1994 GS |
1600 | |
1601 | =cut | |
1602 | */ | |
1603 | ||
79072805 | 1604 | char * |
864dbfa3 | 1605 | Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen) |
79072805 LW |
1606 | { |
1607 | register char *s; | |
1608 | ||
55497cff | 1609 | #ifdef HAS_64K_LIMIT |
79072805 | 1610 | if (newlen >= 0x10000) { |
1d7c1841 GS |
1611 | PerlIO_printf(Perl_debug_log, |
1612 | "Allocation too large: %"UVxf"\n", (UV)newlen); | |
79072805 LW |
1613 | my_exit(1); |
1614 | } | |
55497cff | 1615 | #endif /* HAS_64K_LIMIT */ |
a0d0e21e LW |
1616 | if (SvROK(sv)) |
1617 | sv_unref(sv); | |
79072805 LW |
1618 | if (SvTYPE(sv) < SVt_PV) { |
1619 | sv_upgrade(sv, SVt_PV); | |
93524f2b | 1620 | s = SvPVX_mutable(sv); |
79072805 LW |
1621 | } |
1622 | else if (SvOOK(sv)) { /* pv is offset? */ | |
1623 | sv_backoff(sv); | |
93524f2b | 1624 | s = SvPVX_mutable(sv); |
79072805 LW |
1625 | if (newlen > SvLEN(sv)) |
1626 | newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */ | |
c6f8c383 GA |
1627 | #ifdef HAS_64K_LIMIT |
1628 | if (newlen >= 0x10000) | |
1629 | newlen = 0xFFFF; | |
1630 | #endif | |
79072805 | 1631 | } |
bc44a8a2 | 1632 | else |
4d84ee25 | 1633 | s = SvPVX_mutable(sv); |
54f0641b | 1634 | |
79072805 | 1635 | if (newlen > SvLEN(sv)) { /* need more room? */ |
7a9b70e9 | 1636 | newlen = PERL_STRLEN_ROUNDUP(newlen); |
8d6dde3e | 1637 | if (SvLEN(sv) && s) { |
7bab3ede | 1638 | #ifdef MYMALLOC |
93524f2b | 1639 | const STRLEN l = malloced_size((void*)SvPVX_const(sv)); |
8d6dde3e IZ |
1640 | if (newlen <= l) { |
1641 | SvLEN_set(sv, l); | |
1642 | return s; | |
1643 | } else | |
c70c8a0a | 1644 | #endif |
1936d2a7 | 1645 | s = saferealloc(s, newlen); |
8d6dde3e | 1646 | } |
bfed75c6 | 1647 | else { |
1936d2a7 | 1648 | s = safemalloc(newlen); |
3f7c398e SP |
1649 | if (SvPVX_const(sv) && SvCUR(sv)) { |
1650 | Move(SvPVX_const(sv), s, (newlen < SvCUR(sv)) ? newlen : SvCUR(sv), char); | |
40565179 | 1651 | } |
4e83176d | 1652 | } |
79072805 | 1653 | SvPV_set(sv, s); |
e1ec3a88 | 1654 | SvLEN_set(sv, newlen); |
79072805 LW |
1655 | } |
1656 | return s; | |
1657 | } | |
1658 | ||
954c1994 GS |
1659 | /* |
1660 | =for apidoc sv_setiv | |
1661 | ||
645c22ef DM |
1662 | Copies an integer into the given SV, upgrading first if necessary. |
1663 | Does not handle 'set' magic. See also C<sv_setiv_mg>. | |
954c1994 GS |
1664 | |
1665 | =cut | |
1666 | */ | |
1667 | ||
79072805 | 1668 | void |
864dbfa3 | 1669 | Perl_sv_setiv(pTHX_ register SV *sv, IV i) |
79072805 | 1670 | { |
765f542d | 1671 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 LW |
1672 | switch (SvTYPE(sv)) { |
1673 | case SVt_NULL: | |
79072805 | 1674 | sv_upgrade(sv, SVt_IV); |
463ee0b2 LW |
1675 | break; |
1676 | case SVt_NV: | |
1677 | sv_upgrade(sv, SVt_PVNV); | |
1678 | break; | |
ed6116ce | 1679 | case SVt_RV: |
463ee0b2 | 1680 | case SVt_PV: |
79072805 | 1681 | sv_upgrade(sv, SVt_PVIV); |
463ee0b2 | 1682 | break; |
a0d0e21e LW |
1683 | |
1684 | case SVt_PVGV: | |
a0d0e21e LW |
1685 | case SVt_PVAV: |
1686 | case SVt_PVHV: | |
1687 | case SVt_PVCV: | |
1688 | case SVt_PVFM: | |
1689 | case SVt_PVIO: | |
411caa50 | 1690 | Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0), |
53e06cf0 | 1691 | OP_DESC(PL_op)); |
463ee0b2 | 1692 | } |
a0d0e21e | 1693 | (void)SvIOK_only(sv); /* validate number */ |
45977657 | 1694 | SvIV_set(sv, i); |
463ee0b2 | 1695 | SvTAINT(sv); |
79072805 LW |
1696 | } |
1697 | ||
954c1994 GS |
1698 | /* |
1699 | =for apidoc sv_setiv_mg | |
1700 | ||
1701 | Like C<sv_setiv>, but also handles 'set' magic. | |
1702 | ||
1703 | =cut | |
1704 | */ | |
1705 | ||
79072805 | 1706 | void |
864dbfa3 | 1707 | Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i) |
ef50df4b GS |
1708 | { |
1709 | sv_setiv(sv,i); | |
1710 | SvSETMAGIC(sv); | |
1711 | } | |
1712 | ||
954c1994 GS |
1713 | /* |
1714 | =for apidoc sv_setuv | |
1715 | ||
645c22ef DM |
1716 | Copies an unsigned integer into the given SV, upgrading first if necessary. |
1717 | Does not handle 'set' magic. See also C<sv_setuv_mg>. | |
954c1994 GS |
1718 | |
1719 | =cut | |
1720 | */ | |
1721 | ||
ef50df4b | 1722 | void |
864dbfa3 | 1723 | Perl_sv_setuv(pTHX_ register SV *sv, UV u) |
55497cff | 1724 | { |
55ada374 NC |
1725 | /* With these two if statements: |
1726 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 1727 | |
55ada374 NC |
1728 | without |
1729 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 1730 | |
55ada374 NC |
1731 | If you wish to remove them, please benchmark to see what the effect is |
1732 | */ | |
28e5dec8 JH |
1733 | if (u <= (UV)IV_MAX) { |
1734 | sv_setiv(sv, (IV)u); | |
1735 | return; | |
1736 | } | |
25da4f38 IZ |
1737 | sv_setiv(sv, 0); |
1738 | SvIsUV_on(sv); | |
607fa7f2 | 1739 | SvUV_set(sv, u); |
55497cff | 1740 | } |
1741 | ||
954c1994 GS |
1742 | /* |
1743 | =for apidoc sv_setuv_mg | |
1744 | ||
1745 | Like C<sv_setuv>, but also handles 'set' magic. | |
1746 | ||
1747 | =cut | |
1748 | */ | |
1749 | ||
55497cff | 1750 | void |
864dbfa3 | 1751 | Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u) |
ef50df4b | 1752 | { |
55ada374 NC |
1753 | /* With these two if statements: |
1754 | u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865 | |
d460ef45 | 1755 | |
55ada374 NC |
1756 | without |
1757 | u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865 | |
d460ef45 | 1758 | |
55ada374 NC |
1759 | If you wish to remove them, please benchmark to see what the effect is |
1760 | */ | |
28e5dec8 JH |
1761 | if (u <= (UV)IV_MAX) { |
1762 | sv_setiv(sv, (IV)u); | |
1763 | } else { | |
1764 | sv_setiv(sv, 0); | |
1765 | SvIsUV_on(sv); | |
1766 | sv_setuv(sv,u); | |
1767 | } | |
ef50df4b GS |
1768 | SvSETMAGIC(sv); |
1769 | } | |
1770 | ||
954c1994 GS |
1771 | /* |
1772 | =for apidoc sv_setnv | |
1773 | ||
645c22ef DM |
1774 | Copies a double into the given SV, upgrading first if necessary. |
1775 | Does not handle 'set' magic. See also C<sv_setnv_mg>. | |
954c1994 GS |
1776 | |
1777 | =cut | |
1778 | */ | |
1779 | ||
ef50df4b | 1780 | void |
65202027 | 1781 | Perl_sv_setnv(pTHX_ register SV *sv, NV num) |
79072805 | 1782 | { |
765f542d | 1783 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
a0d0e21e LW |
1784 | switch (SvTYPE(sv)) { |
1785 | case SVt_NULL: | |
1786 | case SVt_IV: | |
79072805 | 1787 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 1788 | break; |
a0d0e21e LW |
1789 | case SVt_RV: |
1790 | case SVt_PV: | |
1791 | case SVt_PVIV: | |
79072805 | 1792 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e | 1793 | break; |
827b7e14 | 1794 | |
a0d0e21e | 1795 | case SVt_PVGV: |
a0d0e21e LW |
1796 | case SVt_PVAV: |
1797 | case SVt_PVHV: | |
1798 | case SVt_PVCV: | |
1799 | case SVt_PVFM: | |
1800 | case SVt_PVIO: | |
411caa50 | 1801 | Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0), |
53e06cf0 | 1802 | OP_NAME(PL_op)); |
79072805 | 1803 | } |
9d6ce603 | 1804 | SvNV_set(sv, num); |
a0d0e21e | 1805 | (void)SvNOK_only(sv); /* validate number */ |
463ee0b2 | 1806 | SvTAINT(sv); |
79072805 LW |
1807 | } |
1808 | ||
954c1994 GS |
1809 | /* |
1810 | =for apidoc sv_setnv_mg | |
1811 | ||
1812 | Like C<sv_setnv>, but also handles 'set' magic. | |
1813 | ||
1814 | =cut | |
1815 | */ | |
1816 | ||
ef50df4b | 1817 | void |
65202027 | 1818 | Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num) |
ef50df4b GS |
1819 | { |
1820 | sv_setnv(sv,num); | |
1821 | SvSETMAGIC(sv); | |
1822 | } | |
1823 | ||
645c22ef DM |
1824 | /* Print an "isn't numeric" warning, using a cleaned-up, |
1825 | * printable version of the offending string | |
1826 | */ | |
1827 | ||
76e3520e | 1828 | STATIC void |
cea2e8a9 | 1829 | S_not_a_number(pTHX_ SV *sv) |
a0d0e21e | 1830 | { |
94463019 JH |
1831 | SV *dsv; |
1832 | char tmpbuf[64]; | |
1b6737cc | 1833 | const char *pv; |
94463019 JH |
1834 | |
1835 | if (DO_UTF8(sv)) { | |
1836 | dsv = sv_2mortal(newSVpv("", 0)); | |
1837 | pv = sv_uni_display(dsv, sv, 10, 0); | |
1838 | } else { | |
1839 | char *d = tmpbuf; | |
1840 | char *limit = tmpbuf + sizeof(tmpbuf) - 8; | |
1841 | /* each *s can expand to 4 chars + "...\0", | |
1842 | i.e. need room for 8 chars */ | |
ecdeb87c | 1843 | |
e62f0680 NC |
1844 | const char *s, *end; |
1845 | for (s = SvPVX_const(sv), end = s + SvCUR(sv); s < end && d < limit; | |
1846 | s++) { | |
94463019 JH |
1847 | int ch = *s & 0xFF; |
1848 | if (ch & 128 && !isPRINT_LC(ch)) { | |
1849 | *d++ = 'M'; | |
1850 | *d++ = '-'; | |
1851 | ch &= 127; | |
1852 | } | |
1853 | if (ch == '\n') { | |
1854 | *d++ = '\\'; | |
1855 | *d++ = 'n'; | |
1856 | } | |
1857 | else if (ch == '\r') { | |
1858 | *d++ = '\\'; | |
1859 | *d++ = 'r'; | |
1860 | } | |
1861 | else if (ch == '\f') { | |
1862 | *d++ = '\\'; | |
1863 | *d++ = 'f'; | |
1864 | } | |
1865 | else if (ch == '\\') { | |
1866 | *d++ = '\\'; | |
1867 | *d++ = '\\'; | |
1868 | } | |
1869 | else if (ch == '\0') { | |
1870 | *d++ = '\\'; | |
1871 | *d++ = '0'; | |
1872 | } | |
1873 | else if (isPRINT_LC(ch)) | |
1874 | *d++ = ch; | |
1875 | else { | |
1876 | *d++ = '^'; | |
1877 | *d++ = toCTRL(ch); | |
1878 | } | |
1879 | } | |
1880 | if (s < end) { | |
1881 | *d++ = '.'; | |
1882 | *d++ = '.'; | |
1883 | *d++ = '.'; | |
1884 | } | |
1885 | *d = '\0'; | |
1886 | pv = tmpbuf; | |
a0d0e21e | 1887 | } |
a0d0e21e | 1888 | |
533c011a | 1889 | if (PL_op) |
9014280d | 1890 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 JH |
1891 | "Argument \"%s\" isn't numeric in %s", pv, |
1892 | OP_DESC(PL_op)); | |
a0d0e21e | 1893 | else |
9014280d | 1894 | Perl_warner(aTHX_ packWARN(WARN_NUMERIC), |
94463019 | 1895 | "Argument \"%s\" isn't numeric", pv); |
a0d0e21e LW |
1896 | } |
1897 | ||
c2988b20 NC |
1898 | /* |
1899 | =for apidoc looks_like_number | |
1900 | ||
645c22ef DM |
1901 | Test if the content of an SV looks like a number (or is a number). |
1902 | C<Inf> and C<Infinity> are treated as numbers (so will not issue a | |
1903 | non-numeric warning), even if your atof() doesn't grok them. | |
c2988b20 NC |
1904 | |
1905 | =cut | |
1906 | */ | |
1907 | ||
1908 | I32 | |
1909 | Perl_looks_like_number(pTHX_ SV *sv) | |
1910 | { | |
a3b680e6 | 1911 | register const char *sbegin; |
c2988b20 NC |
1912 | STRLEN len; |
1913 | ||
1914 | if (SvPOK(sv)) { | |
3f7c398e | 1915 | sbegin = SvPVX_const(sv); |
c2988b20 NC |
1916 | len = SvCUR(sv); |
1917 | } | |
1918 | else if (SvPOKp(sv)) | |
83003860 | 1919 | sbegin = SvPV_const(sv, len); |
c2988b20 | 1920 | else |
e0ab1c0e | 1921 | return SvFLAGS(sv) & (SVf_NOK|SVp_NOK|SVf_IOK|SVp_IOK); |
c2988b20 NC |
1922 | return grok_number(sbegin, len, NULL); |
1923 | } | |
25da4f38 IZ |
1924 | |
1925 | /* Actually, ISO C leaves conversion of UV to IV undefined, but | |
1926 | until proven guilty, assume that things are not that bad... */ | |
1927 | ||
645c22ef DM |
1928 | /* |
1929 | NV_PRESERVES_UV: | |
1930 | ||
1931 | As 64 bit platforms often have an NV that doesn't preserve all bits of | |
28e5dec8 JH |
1932 | an IV (an assumption perl has been based on to date) it becomes necessary |
1933 | to remove the assumption that the NV always carries enough precision to | |
1934 | recreate the IV whenever needed, and that the NV is the canonical form. | |
1935 | Instead, IV/UV and NV need to be given equal rights. So as to not lose | |
645c22ef | 1936 | precision as a side effect of conversion (which would lead to insanity |
28e5dec8 JH |
1937 | and the dragon(s) in t/op/numconvert.t getting very angry) the intent is |
1938 | 1) to distinguish between IV/UV/NV slots that have cached a valid | |
1939 | conversion where precision was lost and IV/UV/NV slots that have a | |
1940 | valid conversion which has lost no precision | |
645c22ef | 1941 | 2) to ensure that if a numeric conversion to one form is requested that |
28e5dec8 JH |
1942 | would lose precision, the precise conversion (or differently |
1943 | imprecise conversion) is also performed and cached, to prevent | |
1944 | requests for different numeric formats on the same SV causing | |
1945 | lossy conversion chains. (lossless conversion chains are perfectly | |
1946 | acceptable (still)) | |
1947 | ||
1948 | ||
1949 | flags are used: | |
1950 | SvIOKp is true if the IV slot contains a valid value | |
1951 | SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true) | |
1952 | SvNOKp is true if the NV slot contains a valid value | |
1953 | SvNOK is true only if the NV value is accurate | |
1954 | ||
1955 | so | |
645c22ef | 1956 | while converting from PV to NV, check to see if converting that NV to an |
28e5dec8 JH |
1957 | IV(or UV) would lose accuracy over a direct conversion from PV to |
1958 | IV(or UV). If it would, cache both conversions, return NV, but mark | |
1959 | SV as IOK NOKp (ie not NOK). | |
1960 | ||
645c22ef | 1961 | While converting from PV to IV, check to see if converting that IV to an |
28e5dec8 JH |
1962 | NV would lose accuracy over a direct conversion from PV to NV. If it |
1963 | would, cache both conversions, flag similarly. | |
1964 | ||
1965 | Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite | |
1966 | correctly because if IV & NV were set NV *always* overruled. | |
645c22ef DM |
1967 | Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flag's meaning |
1968 | changes - now IV and NV together means that the two are interchangeable: | |
28e5dec8 | 1969 | SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX; |
d460ef45 | 1970 | |
645c22ef DM |
1971 | The benefit of this is that operations such as pp_add know that if |
1972 | SvIOK is true for both left and right operands, then integer addition | |
1973 | can be used instead of floating point (for cases where the result won't | |
1974 | overflow). Before, floating point was always used, which could lead to | |
28e5dec8 JH |
1975 | loss of precision compared with integer addition. |
1976 | ||
1977 | * making IV and NV equal status should make maths accurate on 64 bit | |
1978 | platforms | |
1979 | * may speed up maths somewhat if pp_add and friends start to use | |
645c22ef | 1980 | integers when possible instead of fp. (Hopefully the overhead in |
28e5dec8 JH |
1981 | looking for SvIOK and checking for overflow will not outweigh the |
1982 | fp to integer speedup) | |
1983 | * will slow down integer operations (callers of SvIV) on "inaccurate" | |
1984 | values, as the change from SvIOK to SvIOKp will cause a call into | |
1985 | sv_2iv each time rather than a macro access direct to the IV slot | |
1986 | * should speed up number->string conversion on integers as IV is | |
645c22ef | 1987 | favoured when IV and NV are equally accurate |
28e5dec8 JH |
1988 | |
1989 | #################################################################### | |
645c22ef DM |
1990 | You had better be using SvIOK_notUV if you want an IV for arithmetic: |
1991 | SvIOK is true if (IV or UV), so you might be getting (IV)SvUV. | |
1992 | On the other hand, SvUOK is true iff UV. | |
28e5dec8 JH |
1993 | #################################################################### |
1994 | ||
645c22ef | 1995 | Your mileage will vary depending your CPU's relative fp to integer |
28e5dec8 JH |
1996 | performance ratio. |
1997 | */ | |
1998 | ||
1999 | #ifndef NV_PRESERVES_UV | |
645c22ef DM |
2000 | # define IS_NUMBER_UNDERFLOW_IV 1 |
2001 | # define IS_NUMBER_UNDERFLOW_UV 2 | |
2002 | # define IS_NUMBER_IV_AND_UV 2 | |
2003 | # define IS_NUMBER_OVERFLOW_IV 4 | |
2004 | # define IS_NUMBER_OVERFLOW_UV 5 | |
2005 | ||
2006 | /* sv_2iuv_non_preserve(): private routine for use by sv_2iv() and sv_2uv() */ | |
28e5dec8 JH |
2007 | |
2008 | /* For sv_2nv these three cases are "SvNOK and don't bother casting" */ | |
2009 | STATIC int | |
645c22ef | 2010 | S_sv_2iuv_non_preserve(pTHX_ register SV *sv, I32 numtype) |
28e5dec8 | 2011 | { |
3f7c398e | 2012 | 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 |
2013 | if (SvNVX(sv) < (NV)IV_MIN) { |
2014 | (void)SvIOKp_on(sv); | |
2015 | (void)SvNOK_on(sv); | |
45977657 | 2016 | SvIV_set(sv, IV_MIN); |
28e5dec8 JH |
2017 | return IS_NUMBER_UNDERFLOW_IV; |
2018 | } | |
2019 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2020 | (void)SvIOKp_on(sv); | |
2021 | (void)SvNOK_on(sv); | |
2022 | SvIsUV_on(sv); | |
607fa7f2 | 2023 | SvUV_set(sv, UV_MAX); |
28e5dec8 JH |
2024 | return IS_NUMBER_OVERFLOW_UV; |
2025 | } | |
c2988b20 NC |
2026 | (void)SvIOKp_on(sv); |
2027 | (void)SvNOK_on(sv); | |
2028 | /* Can't use strtol etc to convert this string. (See truth table in | |
2029 | sv_2iv */ | |
2030 | if (SvNVX(sv) <= (UV)IV_MAX) { | |
45977657 | 2031 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2032 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2033 | SvIOK_on(sv); /* Integer is precise. NOK, IOK */ | |
2034 | } else { | |
2035 | /* Integer is imprecise. NOK, IOKp */ | |
2036 | } | |
2037 | return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV; | |
2038 | } | |
2039 | SvIsUV_on(sv); | |
607fa7f2 | 2040 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2041 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { |
2042 | if (SvUVX(sv) == UV_MAX) { | |
2043 | /* As we know that NVs don't preserve UVs, UV_MAX cannot | |
2044 | possibly be preserved by NV. Hence, it must be overflow. | |
2045 | NOK, IOKp */ | |
2046 | return IS_NUMBER_OVERFLOW_UV; | |
2047 | } | |
2048 | SvIOK_on(sv); /* Integer is precise. NOK, UOK */ | |
2049 | } else { | |
2050 | /* Integer is imprecise. NOK, IOKp */ | |
28e5dec8 | 2051 | } |
c2988b20 | 2052 | return IS_NUMBER_OVERFLOW_IV; |
28e5dec8 | 2053 | } |
645c22ef DM |
2054 | #endif /* !NV_PRESERVES_UV*/ |
2055 | ||
891f9566 YST |
2056 | /* sv_2iv() is now a macro using Perl_sv_2iv_flags(); |
2057 | * this function provided for binary compatibility only | |
2058 | */ | |
2059 | ||
2060 | IV | |
2061 | Perl_sv_2iv(pTHX_ register SV *sv) | |
2062 | { | |
2063 | return sv_2iv_flags(sv, SV_GMAGIC); | |
2064 | } | |
2065 | ||
645c22ef | 2066 | /* |
891f9566 | 2067 | =for apidoc sv_2iv_flags |
645c22ef | 2068 | |
891f9566 YST |
2069 | Return the integer value of an SV, doing any necessary string |
2070 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. | |
2071 | Normally used via the C<SvIV(sv)> and C<SvIVx(sv)> macros. | |
645c22ef DM |
2072 | |
2073 | =cut | |
2074 | */ | |
28e5dec8 | 2075 | |
a0d0e21e | 2076 | IV |
891f9566 | 2077 | Perl_sv_2iv_flags(pTHX_ register SV *sv, I32 flags) |
79072805 LW |
2078 | { |
2079 | if (!sv) | |
2080 | return 0; | |
8990e307 | 2081 | if (SvGMAGICAL(sv)) { |
891f9566 YST |
2082 | if (flags & SV_GMAGIC) |
2083 | mg_get(sv); | |
463ee0b2 LW |
2084 | if (SvIOKp(sv)) |
2085 | return SvIVX(sv); | |
748a9306 | 2086 | if (SvNOKp(sv)) { |
25da4f38 | 2087 | return I_V(SvNVX(sv)); |
748a9306 | 2088 | } |
36477c24 | 2089 | if (SvPOKp(sv) && SvLEN(sv)) |
2090 | return asIV(sv); | |
3fe9a6f1 | 2091 | if (!SvROK(sv)) { |
d008e5eb | 2092 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2093 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2094 | report_uninit(sv); |
c6ee37c5 | 2095 | } |
36477c24 | 2096 | return 0; |
3fe9a6f1 | 2097 | } |
463ee0b2 | 2098 | } |
ed6116ce | 2099 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2100 | if (SvROK(sv)) { |
a0d0e21e | 2101 | SV* tmpstr; |
1554e226 | 2102 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2103 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2104 | return SvIV(tmpstr); |
56431972 | 2105 | return PTR2IV(SvRV(sv)); |
a0d0e21e | 2106 | } |
765f542d NC |
2107 | if (SvIsCOW(sv)) { |
2108 | sv_force_normal_flags(sv, 0); | |
47deb5e7 | 2109 | } |
0336b60e | 2110 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2111 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2112 | report_uninit(sv); |
ed6116ce LW |
2113 | return 0; |
2114 | } | |
79072805 | 2115 | } |
25da4f38 IZ |
2116 | if (SvIOKp(sv)) { |
2117 | if (SvIsUV(sv)) { | |
2118 | return (IV)(SvUVX(sv)); | |
2119 | } | |
2120 | else { | |
2121 | return SvIVX(sv); | |
2122 | } | |
463ee0b2 | 2123 | } |
748a9306 | 2124 | if (SvNOKp(sv)) { |
28e5dec8 JH |
2125 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2126 | * without also getting a cached IV/UV from it at the same time | |
2127 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2128 | * IV or UV at same time to avoid this. NWC */ | |
25da4f38 IZ |
2129 | |
2130 | if (SvTYPE(sv) == SVt_NV) | |
2131 | sv_upgrade(sv, SVt_PVNV); | |
2132 | ||
28e5dec8 JH |
2133 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ |
2134 | /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost | |
2135 | certainly cast into the IV range at IV_MAX, whereas the correct | |
2136 | answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary | |
2137 | cases go to UV */ | |
2138 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2139 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2140 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2141 | #ifndef NV_PRESERVES_UV | |
2142 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2143 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2144 | /* Don't flag it as "accurately an integer" if the number | |
2145 | came from a (by definition imprecise) NV operation, and | |
2146 | we're outside the range of NV integer precision */ | |
2147 | #endif | |
2148 | ) { | |
2149 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2150 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2151 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2152 | PTR2UV(sv), |
2153 | SvNVX(sv), | |
2154 | SvIVX(sv))); | |
2155 | ||
2156 | } else { | |
2157 | /* IV not precise. No need to convert from PV, as NV | |
2158 | conversion would already have cached IV if it detected | |
2159 | that PV->IV would be better than PV->NV->IV | |
2160 | flags already correct - don't set public IOK. */ | |
2161 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2162 | "0x%"UVxf" iv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2163 | PTR2UV(sv), |
2164 | SvNVX(sv), | |
2165 | SvIVX(sv))); | |
2166 | } | |
2167 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2168 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2169 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2170 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2171 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2172 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2173 | Hopefully for 2s complement IV_MIN is something like | |
2174 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2175 | } |
25da4f38 | 2176 | else { |
607fa7f2 | 2177 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2178 | if ( |
2179 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2180 | #ifndef NV_PRESERVES_UV | |
2181 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2182 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2183 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2184 | /* Don't flag it as "accurately an integer" if the number | |
2185 | came from a (by definition imprecise) NV operation, and | |
2186 | we're outside the range of NV integer precision */ | |
2187 | #endif | |
2188 | ) | |
2189 | SvIOK_on(sv); | |
25da4f38 IZ |
2190 | SvIsUV_on(sv); |
2191 | ret_iv_max: | |
1c846c1f | 2192 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
57def98f | 2193 | "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n", |
56431972 | 2194 | PTR2UV(sv), |
57def98f JH |
2195 | SvUVX(sv), |
2196 | SvUVX(sv))); | |
25da4f38 IZ |
2197 | return (IV)SvUVX(sv); |
2198 | } | |
748a9306 LW |
2199 | } |
2200 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 2201 | UV value; |
504618e9 | 2202 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
25da4f38 IZ |
2203 | /* We want to avoid a possible problem when we cache an IV which |
2204 | may be later translated to an NV, and the resulting NV is not | |
c2988b20 NC |
2205 | the same as the direct translation of the initial string |
2206 | (eg 123.456 can shortcut to the IV 123 with atol(), but we must | |
2207 | be careful to ensure that the value with the .456 is around if the | |
2208 | NV value is requested in the future). | |
1c846c1f | 2209 | |
25da4f38 IZ |
2210 | This means that if we cache such an IV, we need to cache the |
2211 | NV as well. Moreover, we trade speed for space, and do not | |
28e5dec8 | 2212 | cache the NV if we are sure it's not needed. |
25da4f38 | 2213 | */ |
16b7a9a4 | 2214 | |
c2988b20 NC |
2215 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2216 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2217 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2218 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 JH |
2219 | if (SvTYPE(sv) < SVt_PVIV) |
2220 | sv_upgrade(sv, SVt_PVIV); | |
f7bbb42a | 2221 | (void)SvIOK_on(sv); |
c2988b20 NC |
2222 | } else if (SvTYPE(sv) < SVt_PVNV) |
2223 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 | 2224 | |
c2988b20 NC |
2225 | /* If NV preserves UV then we only use the UV value if we know that |
2226 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2227 | then the value returned may have more precision than atof() will | |
2228 | return, even though value isn't perfectly accurate. */ | |
2229 | if ((numtype & (IS_NUMBER_IN_UV | |
2230 | #ifdef NV_PRESERVES_UV | |
2231 | | IS_NUMBER_NOT_INT | |
2232 | #endif | |
2233 | )) == IS_NUMBER_IN_UV) { | |
2234 | /* This won't turn off the public IOK flag if it was set above */ | |
2235 | (void)SvIOKp_on(sv); | |
2236 | ||
2237 | if (!(numtype & IS_NUMBER_NEG)) { | |
2238 | /* positive */; | |
2239 | if (value <= (UV)IV_MAX) { | |
45977657 | 2240 | SvIV_set(sv, (IV)value); |
c2988b20 | 2241 | } else { |
607fa7f2 | 2242 | SvUV_set(sv, value); |
c2988b20 NC |
2243 | SvIsUV_on(sv); |
2244 | } | |
2245 | } else { | |
2246 | /* 2s complement assumption */ | |
2247 | if (value <= (UV)IV_MIN) { | |
45977657 | 2248 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2249 | } else { |
2250 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2251 | I'm assuming it will be rare. */ |
c2988b20 NC |
2252 | if (SvTYPE(sv) < SVt_PVNV) |
2253 | sv_upgrade(sv, SVt_PVNV); | |
2254 | SvNOK_on(sv); | |
2255 | SvIOK_off(sv); | |
2256 | SvIOKp_on(sv); | |
9d6ce603 | 2257 | SvNV_set(sv, -(NV)value); |
45977657 | 2258 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2259 | } |
2260 | } | |
2261 | } | |
2262 | /* For !NV_PRESERVES_UV and IS_NUMBER_IN_UV and IS_NUMBER_NOT_INT we | |
2263 | will be in the previous block to set the IV slot, and the next | |
2264 | block to set the NV slot. So no else here. */ | |
2265 | ||
2266 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2267 | != IS_NUMBER_IN_UV) { | |
2268 | /* It wasn't an (integer that doesn't overflow the UV). */ | |
3f7c398e | 2269 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 | 2270 | |
c2988b20 NC |
2271 | if (! numtype && ckWARN(WARN_NUMERIC)) |
2272 | not_a_number(sv); | |
28e5dec8 | 2273 | |
65202027 | 2274 | #if defined(USE_LONG_DOUBLE) |
c2988b20 NC |
2275 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n", |
2276 | PTR2UV(sv), SvNVX(sv))); | |
65202027 | 2277 | #else |
1779d84d | 2278 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"NVgf")\n", |
c2988b20 | 2279 | PTR2UV(sv), SvNVX(sv))); |
65202027 | 2280 | #endif |
28e5dec8 JH |
2281 | |
2282 | ||
2283 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2284 | (void)SvIOKp_on(sv); |
2285 | (void)SvNOK_on(sv); | |
2286 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2287 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2288 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2289 | SvIOK_on(sv); | |
28e5dec8 | 2290 | } else { |
c2988b20 NC |
2291 | /* Integer is imprecise. NOK, IOKp */ |
2292 | } | |
2293 | /* UV will not work better than IV */ | |
2294 | } else { | |
2295 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2296 | SvIsUV_on(sv); | |
2297 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 2298 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
2299 | SvIsUV_on(sv); |
2300 | } else { | |
607fa7f2 | 2301 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2302 | /* 0xFFFFFFFFFFFFFFFF not an issue in here */ |
2303 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2304 | SvIOK_on(sv); | |
28e5dec8 JH |
2305 | SvIsUV_on(sv); |
2306 | } else { | |
c2988b20 NC |
2307 | /* Integer is imprecise. NOK, IOKp, is UV */ |
2308 | SvIsUV_on(sv); | |
28e5dec8 | 2309 | } |
28e5dec8 | 2310 | } |
c2988b20 NC |
2311 | goto ret_iv_max; |
2312 | } | |
28e5dec8 | 2313 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2314 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2315 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2316 | /* The IV slot will have been set from value returned by | |
2317 | grok_number above. The NV slot has just been set using | |
2318 | Atof. */ | |
560b0c46 | 2319 | SvNOK_on(sv); |
c2988b20 NC |
2320 | assert (SvIOKp(sv)); |
2321 | } else { | |
2322 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2323 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2324 | /* Small enough to preserve all bits. */ | |
2325 | (void)SvIOKp_on(sv); | |
2326 | SvNOK_on(sv); | |
45977657 | 2327 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2328 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
2329 | SvIOK_on(sv); | |
2330 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2331 | this NV is in the preserved range, therefore: */ | |
2332 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2333 | < (UV)IV_MAX)) { | |
32fdb065 | 2334 | 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 |
2335 | } |
2336 | } else { | |
2337 | /* IN_UV NOT_INT | |
2338 | 0 0 already failed to read UV. | |
2339 | 0 1 already failed to read UV. | |
2340 | 1 0 you won't get here in this case. IV/UV | |
2341 | slot set, public IOK, Atof() unneeded. | |
2342 | 1 1 already read UV. | |
2343 | so there's no point in sv_2iuv_non_preserve() attempting | |
2344 | to use atol, strtol, strtoul etc. */ | |
2345 | if (sv_2iuv_non_preserve (sv, numtype) | |
2346 | >= IS_NUMBER_OVERFLOW_IV) | |
2347 | goto ret_iv_max; | |
2348 | } | |
2349 | } | |
28e5dec8 | 2350 | #endif /* NV_PRESERVES_UV */ |
25da4f38 | 2351 | } |
28e5dec8 | 2352 | } else { |
599cee73 | 2353 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 2354 | report_uninit(sv); |
25da4f38 IZ |
2355 | if (SvTYPE(sv) < SVt_IV) |
2356 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2357 | sv_upgrade(sv, SVt_IV); | |
a0d0e21e | 2358 | return 0; |
79072805 | 2359 | } |
1d7c1841 GS |
2360 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n", |
2361 | PTR2UV(sv),SvIVX(sv))); | |
25da4f38 | 2362 | return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv); |
79072805 LW |
2363 | } |
2364 | ||
891f9566 YST |
2365 | /* sv_2uv() is now a macro using Perl_sv_2uv_flags(); |
2366 | * this function provided for binary compatibility only | |
2367 | */ | |
2368 | ||
2369 | UV | |
2370 | Perl_sv_2uv(pTHX_ register SV *sv) | |
2371 | { | |
2372 | return sv_2uv_flags(sv, SV_GMAGIC); | |
2373 | } | |
2374 | ||
645c22ef | 2375 | /* |
891f9566 | 2376 | =for apidoc sv_2uv_flags |
645c22ef DM |
2377 | |
2378 | Return the unsigned integer value of an SV, doing any necessary string | |
891f9566 YST |
2379 | conversion. If flags includes SV_GMAGIC, does an mg_get() first. |
2380 | Normally used via the C<SvUV(sv)> and C<SvUVx(sv)> macros. | |
645c22ef DM |
2381 | |
2382 | =cut | |
2383 | */ | |
2384 | ||
ff68c719 | 2385 | UV |
891f9566 | 2386 | Perl_sv_2uv_flags(pTHX_ register SV *sv, I32 flags) |
ff68c719 | 2387 | { |
2388 | if (!sv) | |
2389 | return 0; | |
2390 | if (SvGMAGICAL(sv)) { | |
891f9566 YST |
2391 | if (flags & SV_GMAGIC) |
2392 | mg_get(sv); | |
ff68c719 | 2393 | if (SvIOKp(sv)) |
2394 | return SvUVX(sv); | |
2395 | if (SvNOKp(sv)) | |
2396 | return U_V(SvNVX(sv)); | |
36477c24 | 2397 | if (SvPOKp(sv) && SvLEN(sv)) |
2398 | return asUV(sv); | |
3fe9a6f1 | 2399 | if (!SvROK(sv)) { |
d008e5eb | 2400 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2401 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2402 | report_uninit(sv); |
c6ee37c5 | 2403 | } |
36477c24 | 2404 | return 0; |
3fe9a6f1 | 2405 | } |
ff68c719 | 2406 | } |
2407 | if (SvTHINKFIRST(sv)) { | |
2408 | if (SvROK(sv)) { | |
ff68c719 | 2409 | SV* tmpstr; |
1554e226 | 2410 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2411 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2412 | return SvUV(tmpstr); |
56431972 | 2413 | return PTR2UV(SvRV(sv)); |
ff68c719 | 2414 | } |
765f542d NC |
2415 | if (SvIsCOW(sv)) { |
2416 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2417 | } |
0336b60e | 2418 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 2419 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2420 | report_uninit(sv); |
ff68c719 | 2421 | return 0; |
2422 | } | |
2423 | } | |
25da4f38 IZ |
2424 | if (SvIOKp(sv)) { |
2425 | if (SvIsUV(sv)) { | |
2426 | return SvUVX(sv); | |
2427 | } | |
2428 | else { | |
2429 | return (UV)SvIVX(sv); | |
2430 | } | |
ff68c719 | 2431 | } |
2432 | if (SvNOKp(sv)) { | |
28e5dec8 JH |
2433 | /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv |
2434 | * without also getting a cached IV/UV from it at the same time | |
2435 | * (ie PV->NV conversion should detect loss of accuracy and cache | |
2436 | * IV or UV at same time to avoid this. */ | |
2437 | /* IV-over-UV optimisation - choose to cache IV if possible */ | |
2438 | ||
25da4f38 IZ |
2439 | if (SvTYPE(sv) == SVt_NV) |
2440 | sv_upgrade(sv, SVt_PVNV); | |
28e5dec8 JH |
2441 | |
2442 | (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */ | |
2443 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2444 | SvIV_set(sv, I_V(SvNVX(sv))); |
28e5dec8 JH |
2445 | if (SvNVX(sv) == (NV) SvIVX(sv) |
2446 | #ifndef NV_PRESERVES_UV | |
2447 | && (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2448 | (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv))) | |
2449 | /* Don't flag it as "accurately an integer" if the number | |
2450 | came from a (by definition imprecise) NV operation, and | |
2451 | we're outside the range of NV integer precision */ | |
2452 | #endif | |
2453 | ) { | |
2454 | SvIOK_on(sv); /* Can this go wrong with rounding? NWC */ | |
2455 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2456 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (precise)\n", |
28e5dec8 JH |
2457 | PTR2UV(sv), |
2458 | SvNVX(sv), | |
2459 | SvIVX(sv))); | |
2460 | ||
2461 | } else { | |
2462 | /* IV not precise. No need to convert from PV, as NV | |
2463 | conversion would already have cached IV if it detected | |
2464 | that PV->IV would be better than PV->NV->IV | |
2465 | flags already correct - don't set public IOK. */ | |
2466 | DEBUG_c(PerlIO_printf(Perl_debug_log, | |
7234c960 | 2467 | "0x%"UVxf" uv(%"NVgf" => %"IVdf") (imprecise)\n", |
28e5dec8 JH |
2468 | PTR2UV(sv), |
2469 | SvNVX(sv), | |
2470 | SvIVX(sv))); | |
2471 | } | |
2472 | /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN, | |
2473 | but the cast (NV)IV_MIN rounds to a the value less (more | |
2474 | negative) than IV_MIN which happens to be equal to SvNVX ?? | |
2475 | Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and | |
2476 | NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and | |
2477 | (NV)UVX == NVX are both true, but the values differ. :-( | |
2478 | Hopefully for 2s complement IV_MIN is something like | |
2479 | 0x8000000000000000 which will be exact. NWC */ | |
d460ef45 | 2480 | } |
28e5dec8 | 2481 | else { |
607fa7f2 | 2482 | SvUV_set(sv, U_V(SvNVX(sv))); |
28e5dec8 JH |
2483 | if ( |
2484 | (SvNVX(sv) == (NV) SvUVX(sv)) | |
2485 | #ifndef NV_PRESERVES_UV | |
2486 | /* Make sure it's not 0xFFFFFFFFFFFFFFFF */ | |
2487 | /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */ | |
2488 | && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv)) | |
2489 | /* Don't flag it as "accurately an integer" if the number | |
2490 | came from a (by definition imprecise) NV operation, and | |
2491 | we're outside the range of NV integer precision */ | |
2492 | #endif | |
2493 | ) | |
2494 | SvIOK_on(sv); | |
2495 | SvIsUV_on(sv); | |
1c846c1f | 2496 | DEBUG_c(PerlIO_printf(Perl_debug_log, |
28e5dec8 | 2497 | "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n", |
57def98f | 2498 | PTR2UV(sv), |
28e5dec8 JH |
2499 | SvUVX(sv), |
2500 | SvUVX(sv))); | |
25da4f38 | 2501 | } |
ff68c719 | 2502 | } |
2503 | else if (SvPOKp(sv) && SvLEN(sv)) { | |
c2988b20 | 2504 | UV value; |
504618e9 | 2505 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
25da4f38 IZ |
2506 | |
2507 | /* We want to avoid a possible problem when we cache a UV which | |
2508 | may be later translated to an NV, and the resulting NV is not | |
2509 | the translation of the initial data. | |
1c846c1f | 2510 | |
25da4f38 IZ |
2511 | This means that if we cache such a UV, we need to cache the |
2512 | NV as well. Moreover, we trade speed for space, and do not | |
2513 | cache the NV if not needed. | |
2514 | */ | |
16b7a9a4 | 2515 | |
c2988b20 NC |
2516 | /* SVt_PVNV is one higher than SVt_PVIV, hence this order */ |
2517 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2518 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2519 | /* It's definitely an integer, only upgrade to PVIV */ |
28e5dec8 | 2520 | if (SvTYPE(sv) < SVt_PVIV) |
f7bbb42a JH |
2521 | sv_upgrade(sv, SVt_PVIV); |
2522 | (void)SvIOK_on(sv); | |
c2988b20 NC |
2523 | } else if (SvTYPE(sv) < SVt_PVNV) |
2524 | sv_upgrade(sv, SVt_PVNV); | |
d460ef45 | 2525 | |
c2988b20 NC |
2526 | /* If NV preserves UV then we only use the UV value if we know that |
2527 | we aren't going to call atof() below. If NVs don't preserve UVs | |
2528 | then the value returned may have more precision than atof() will | |
2529 | return, even though it isn't accurate. */ | |
2530 | if ((numtype & (IS_NUMBER_IN_UV | |
2531 | #ifdef NV_PRESERVES_UV | |
2532 | | IS_NUMBER_NOT_INT | |
2533 | #endif | |
2534 | )) == IS_NUMBER_IN_UV) { | |
2535 | /* This won't turn off the public IOK flag if it was set above */ | |
2536 | (void)SvIOKp_on(sv); | |
2537 | ||
2538 | if (!(numtype & IS_NUMBER_NEG)) { | |
2539 | /* positive */; | |
2540 | if (value <= (UV)IV_MAX) { | |
45977657 | 2541 | SvIV_set(sv, (IV)value); |
28e5dec8 JH |
2542 | } else { |
2543 | /* it didn't overflow, and it was positive. */ | |
607fa7f2 | 2544 | SvUV_set(sv, value); |
28e5dec8 JH |
2545 | SvIsUV_on(sv); |
2546 | } | |
c2988b20 NC |
2547 | } else { |
2548 | /* 2s complement assumption */ | |
2549 | if (value <= (UV)IV_MIN) { | |
45977657 | 2550 | SvIV_set(sv, -(IV)value); |
c2988b20 NC |
2551 | } else { |
2552 | /* Too negative for an IV. This is a double upgrade, but | |
d1be9408 | 2553 | I'm assuming it will be rare. */ |
c2988b20 NC |
2554 | if (SvTYPE(sv) < SVt_PVNV) |
2555 | sv_upgrade(sv, SVt_PVNV); | |
2556 | SvNOK_on(sv); | |
2557 | SvIOK_off(sv); | |
2558 | SvIOKp_on(sv); | |
9d6ce603 | 2559 | SvNV_set(sv, -(NV)value); |
45977657 | 2560 | SvIV_set(sv, IV_MIN); |
c2988b20 NC |
2561 | } |
2562 | } | |
2563 | } | |
2564 | ||
2565 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2566 | != IS_NUMBER_IN_UV) { | |
2567 | /* It wasn't an integer, or it overflowed the UV. */ | |
3f7c398e | 2568 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 | 2569 | |
c2988b20 | 2570 | if (! numtype && ckWARN(WARN_NUMERIC)) |
28e5dec8 JH |
2571 | not_a_number(sv); |
2572 | ||
2573 | #if defined(USE_LONG_DOUBLE) | |
c2988b20 NC |
2574 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n", |
2575 | PTR2UV(sv), SvNVX(sv))); | |
28e5dec8 | 2576 | #else |
1779d84d | 2577 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"NVgf")\n", |
c2988b20 | 2578 | PTR2UV(sv), SvNVX(sv))); |
28e5dec8 JH |
2579 | #endif |
2580 | ||
2581 | #ifdef NV_PRESERVES_UV | |
c2988b20 NC |
2582 | (void)SvIOKp_on(sv); |
2583 | (void)SvNOK_on(sv); | |
2584 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { | |
45977657 | 2585 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2586 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) { |
2587 | SvIOK_on(sv); | |
2588 | } else { | |
2589 | /* Integer is imprecise. NOK, IOKp */ | |
2590 | } | |
2591 | /* UV will not work better than IV */ | |
2592 | } else { | |
2593 | if (SvNVX(sv) > (NV)UV_MAX) { | |
2594 | SvIsUV_on(sv); | |
2595 | /* Integer is inaccurate. NOK, IOKp, is UV */ | |
607fa7f2 | 2596 | SvUV_set(sv, UV_MAX); |
c2988b20 NC |
2597 | SvIsUV_on(sv); |
2598 | } else { | |
607fa7f2 | 2599 | SvUV_set(sv, U_V(SvNVX(sv))); |
c2988b20 NC |
2600 | /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs |
2601 | NV preservse UV so can do correct comparison. */ | |
2602 | if ((NV)(SvUVX(sv)) == SvNVX(sv)) { | |
2603 | SvIOK_on(sv); | |
2604 | SvIsUV_on(sv); | |
2605 | } else { | |
2606 | /* Integer is imprecise. NOK, IOKp, is UV */ | |
2607 | SvIsUV_on(sv); | |
2608 | } | |
2609 | } | |
2610 | } | |
28e5dec8 | 2611 | #else /* NV_PRESERVES_UV */ |
c2988b20 NC |
2612 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2613 | == (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) { | |
2614 | /* The UV slot will have been set from value returned by | |
2615 | grok_number above. The NV slot has just been set using | |
2616 | Atof. */ | |
560b0c46 | 2617 | SvNOK_on(sv); |
c2988b20 NC |
2618 | assert (SvIOKp(sv)); |
2619 | } else { | |
2620 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
2621 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { | |
2622 | /* Small enough to preserve all bits. */ | |
2623 | (void)SvIOKp_on(sv); | |
2624 | SvNOK_on(sv); | |
45977657 | 2625 | SvIV_set(sv, I_V(SvNVX(sv))); |
c2988b20 NC |
2626 | if ((NV)(SvIVX(sv)) == SvNVX(sv)) |
2627 | SvIOK_on(sv); | |
2628 | /* Assumption: first non-preserved integer is < IV_MAX, | |
2629 | this NV is in the preserved range, therefore: */ | |
2630 | if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)) | |
2631 | < (UV)IV_MAX)) { | |
32fdb065 | 2632 | 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 |
2633 | } |
2634 | } else | |
2635 | sv_2iuv_non_preserve (sv, numtype); | |
2636 | } | |
28e5dec8 | 2637 | #endif /* NV_PRESERVES_UV */ |
f7bbb42a | 2638 | } |
ff68c719 | 2639 | } |
2640 | else { | |
d008e5eb | 2641 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2642 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2643 | report_uninit(sv); |
c6ee37c5 | 2644 | } |
25da4f38 IZ |
2645 | if (SvTYPE(sv) < SVt_IV) |
2646 | /* Typically the caller expects that sv_any is not NULL now. */ | |
2647 | sv_upgrade(sv, SVt_IV); | |
ff68c719 | 2648 | return 0; |
2649 | } | |
25da4f38 | 2650 | |
1d7c1841 GS |
2651 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n", |
2652 | PTR2UV(sv),SvUVX(sv))); | |
25da4f38 | 2653 | return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv); |
ff68c719 | 2654 | } |
2655 | ||
645c22ef DM |
2656 | /* |
2657 | =for apidoc sv_2nv | |
2658 | ||
2659 | Return the num value of an SV, doing any necessary string or integer | |
2660 | conversion, magic etc. Normally used via the C<SvNV(sv)> and C<SvNVx(sv)> | |
2661 | macros. | |
2662 | ||
2663 | =cut | |
2664 | */ | |
2665 | ||
65202027 | 2666 | NV |
864dbfa3 | 2667 | Perl_sv_2nv(pTHX_ register SV *sv) |
79072805 LW |
2668 | { |
2669 | if (!sv) | |
2670 | return 0.0; | |
8990e307 | 2671 | if (SvGMAGICAL(sv)) { |
463ee0b2 LW |
2672 | mg_get(sv); |
2673 | if (SvNOKp(sv)) | |
2674 | return SvNVX(sv); | |
a0d0e21e | 2675 | if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 2676 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && |
504618e9 | 2677 | !grok_number(SvPVX_const(sv), SvCUR(sv), NULL)) |
a0d0e21e | 2678 | not_a_number(sv); |
3f7c398e | 2679 | return Atof(SvPVX_const(sv)); |
a0d0e21e | 2680 | } |
25da4f38 | 2681 | if (SvIOKp(sv)) { |
1c846c1f | 2682 | if (SvIsUV(sv)) |
65202027 | 2683 | return (NV)SvUVX(sv); |
25da4f38 | 2684 | else |
65202027 | 2685 | return (NV)SvIVX(sv); |
25da4f38 | 2686 | } |
16d20bd9 | 2687 | if (!SvROK(sv)) { |
d008e5eb | 2688 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 2689 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 2690 | report_uninit(sv); |
c6ee37c5 | 2691 | } |
66a1b24b | 2692 | return (NV)0; |
16d20bd9 | 2693 | } |
463ee0b2 | 2694 | } |
ed6116ce | 2695 | if (SvTHINKFIRST(sv)) { |
a0d0e21e | 2696 | if (SvROK(sv)) { |
a0d0e21e | 2697 | SV* tmpstr; |
1554e226 | 2698 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) && |
b4b9a328 | 2699 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) |
9e7bc3e8 | 2700 | return SvNV(tmpstr); |
56431972 | 2701 | return PTR2NV(SvRV(sv)); |
a0d0e21e | 2702 | } |
765f542d NC |
2703 | if (SvIsCOW(sv)) { |
2704 | sv_force_normal_flags(sv, 0); | |
8a818333 | 2705 | } |
0336b60e | 2706 | if (SvREADONLY(sv) && !SvOK(sv)) { |
599cee73 | 2707 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 2708 | report_uninit(sv); |
ed6116ce LW |
2709 | return 0.0; |
2710 | } | |
79072805 LW |
2711 | } |
2712 | if (SvTYPE(sv) < SVt_NV) { | |
463ee0b2 LW |
2713 | if (SvTYPE(sv) == SVt_IV) |
2714 | sv_upgrade(sv, SVt_PVNV); | |
2715 | else | |
2716 | sv_upgrade(sv, SVt_NV); | |
906f284f | 2717 | #ifdef USE_LONG_DOUBLE |
097ee67d | 2718 | DEBUG_c({ |
f93f4e46 | 2719 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2720 | PerlIO_printf(Perl_debug_log, |
2721 | "0x%"UVxf" num(%" PERL_PRIgldbl ")\n", | |
2722 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2723 | RESTORE_NUMERIC_LOCAL(); |
2724 | }); | |
65202027 | 2725 | #else |
572bbb43 | 2726 | DEBUG_c({ |
f93f4e46 | 2727 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2728 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%"NVgf")\n", |
1d7c1841 | 2729 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2730 | RESTORE_NUMERIC_LOCAL(); |
2731 | }); | |
572bbb43 | 2732 | #endif |
79072805 LW |
2733 | } |
2734 | else if (SvTYPE(sv) < SVt_PVNV) | |
2735 | sv_upgrade(sv, SVt_PVNV); | |
59d8ce62 NC |
2736 | if (SvNOKp(sv)) { |
2737 | return SvNVX(sv); | |
61604483 | 2738 | } |
59d8ce62 | 2739 | if (SvIOKp(sv)) { |
9d6ce603 | 2740 | SvNV_set(sv, SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv)); |
28e5dec8 JH |
2741 | #ifdef NV_PRESERVES_UV |
2742 | SvNOK_on(sv); | |
2743 | #else | |
2744 | /* Only set the public NV OK flag if this NV preserves the IV */ | |
2745 | /* Check it's not 0xFFFFFFFFFFFFFFFF */ | |
2746 | if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv)))) | |
2747 | : (SvIVX(sv) == I_V(SvNVX(sv)))) | |
2748 | SvNOK_on(sv); | |
2749 | else | |
2750 | SvNOKp_on(sv); | |
2751 | #endif | |
93a17b20 | 2752 | } |
748a9306 | 2753 | else if (SvPOKp(sv) && SvLEN(sv)) { |
c2988b20 | 2754 | UV value; |
3f7c398e | 2755 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
c2988b20 | 2756 | if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !numtype) |
a0d0e21e | 2757 | not_a_number(sv); |
28e5dec8 | 2758 | #ifdef NV_PRESERVES_UV |
c2988b20 NC |
2759 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2760 | == IS_NUMBER_IN_UV) { | |
5e045b90 | 2761 | /* It's definitely an integer */ |
9d6ce603 | 2762 | SvNV_set(sv, (numtype & IS_NUMBER_NEG) ? -(NV)value : (NV)value); |
c2988b20 | 2763 | } else |
3f7c398e | 2764 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2765 | SvNOK_on(sv); |
2766 | #else | |
3f7c398e | 2767 | SvNV_set(sv, Atof(SvPVX_const(sv))); |
28e5dec8 JH |
2768 | /* Only set the public NV OK flag if this NV preserves the value in |
2769 | the PV at least as well as an IV/UV would. | |
2770 | Not sure how to do this 100% reliably. */ | |
2771 | /* if that shift count is out of range then Configure's test is | |
2772 | wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS == | |
2773 | UV_BITS */ | |
2774 | if (((UV)1 << NV_PRESERVES_UV_BITS) > | |
c2988b20 | 2775 | U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) { |
28e5dec8 | 2776 | SvNOK_on(sv); /* Definitely small enough to preserve all bits */ |
c2988b20 NC |
2777 | } else if (!(numtype & IS_NUMBER_IN_UV)) { |
2778 | /* Can't use strtol etc to convert this string, so don't try. | |
2779 | sv_2iv and sv_2uv will use the NV to convert, not the PV. */ | |
2780 | SvNOK_on(sv); | |
2781 | } else { | |
2782 | /* value has been set. It may not be precise. */ | |
2783 | if ((numtype & IS_NUMBER_NEG) && (value > (UV)IV_MIN)) { | |
2784 | /* 2s complement assumption for (UV)IV_MIN */ | |
2785 | SvNOK_on(sv); /* Integer is too negative. */ | |
2786 | } else { | |
2787 | SvNOKp_on(sv); | |
2788 | SvIOKp_on(sv); | |
6fa402ec | 2789 | |
c2988b20 | 2790 | if (numtype & IS_NUMBER_NEG) { |
45977657 | 2791 | SvIV_set(sv, -(IV)value); |
c2988b20 | 2792 | } else if (value <= (UV)IV_MAX) { |
45977657 | 2793 | SvIV_set(sv, (IV)value); |
c2988b20 | 2794 | } else { |
607fa7f2 | 2795 | SvUV_set(sv, value); |
c2988b20 NC |
2796 | SvIsUV_on(sv); |
2797 | } | |
2798 | ||
2799 | if (numtype & IS_NUMBER_NOT_INT) { | |
2800 | /* I believe that even if the original PV had decimals, | |
2801 | they are lost beyond the limit of the FP precision. | |
2802 | However, neither is canonical, so both only get p | |
2803 | flags. NWC, 2000/11/25 */ | |
2804 | /* Both already have p flags, so do nothing */ | |
2805 | } else { | |
66a1b24b | 2806 | const NV nv = SvNVX(sv); |
c2988b20 NC |
2807 | if (SvNVX(sv) < (NV)IV_MAX + 0.5) { |
2808 | if (SvIVX(sv) == I_V(nv)) { | |
2809 | SvNOK_on(sv); | |
2810 | SvIOK_on(sv); | |
2811 | } else { | |
2812 | SvIOK_on(sv); | |
2813 | /* It had no "." so it must be integer. */ | |
2814 | } | |
2815 | } else { | |
2816 | /* between IV_MAX and NV(UV_MAX). | |
2817 | Could be slightly > UV_MAX */ | |
6fa402ec | 2818 | |
c2988b20 NC |
2819 | if (numtype & IS_NUMBER_NOT_INT) { |
2820 | /* UV and NV both imprecise. */ | |
2821 | } else { | |
66a1b24b | 2822 | const UV nv_as_uv = U_V(nv); |
c2988b20 NC |
2823 | |
2824 | if (value == nv_as_uv && SvUVX(sv) != UV_MAX) { | |
2825 | SvNOK_on(sv); | |
2826 | SvIOK_on(sv); | |
2827 | } else { | |
2828 | SvIOK_on(sv); | |
2829 | } | |
2830 | } | |
2831 | } | |
2832 | } | |
2833 | } | |
2834 | } | |
28e5dec8 | 2835 | #endif /* NV_PRESERVES_UV */ |
93a17b20 | 2836 | } |
79072805 | 2837 | else { |
599cee73 | 2838 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) |
29489e7c | 2839 | report_uninit(sv); |
25da4f38 IZ |
2840 | if (SvTYPE(sv) < SVt_NV) |
2841 | /* Typically the caller expects that sv_any is not NULL now. */ | |
28e5dec8 JH |
2842 | /* XXX Ilya implies that this is a bug in callers that assume this |
2843 | and ideally should be fixed. */ | |
25da4f38 | 2844 | sv_upgrade(sv, SVt_NV); |
a0d0e21e | 2845 | return 0.0; |
79072805 | 2846 | } |
572bbb43 | 2847 | #if defined(USE_LONG_DOUBLE) |
097ee67d | 2848 | DEBUG_c({ |
f93f4e46 | 2849 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1d7c1841 GS |
2850 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n", |
2851 | PTR2UV(sv), SvNVX(sv)); | |
572bbb43 GS |
2852 | RESTORE_NUMERIC_LOCAL(); |
2853 | }); | |
65202027 | 2854 | #else |
572bbb43 | 2855 | DEBUG_c({ |
f93f4e46 | 2856 | STORE_NUMERIC_LOCAL_SET_STANDARD(); |
1779d84d | 2857 | PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%"NVgf")\n", |
1d7c1841 | 2858 | PTR2UV(sv), SvNVX(sv)); |
097ee67d JH |
2859 | RESTORE_NUMERIC_LOCAL(); |
2860 | }); | |
572bbb43 | 2861 | #endif |
463ee0b2 | 2862 | return SvNVX(sv); |
79072805 LW |
2863 | } |
2864 | ||
645c22ef DM |
2865 | /* asIV(): extract an integer from the string value of an SV. |
2866 | * Caller must validate PVX */ | |
2867 | ||
76e3520e | 2868 | STATIC IV |
cea2e8a9 | 2869 | S_asIV(pTHX_ SV *sv) |
36477c24 | 2870 | { |
c2988b20 | 2871 | UV value; |
66a1b24b | 2872 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
c2988b20 NC |
2873 | |
2874 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) | |
2875 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2876 | /* It's definitely an integer */ |
c2988b20 NC |
2877 | if (numtype & IS_NUMBER_NEG) { |
2878 | if (value < (UV)IV_MIN) | |
2879 | return -(IV)value; | |
2880 | } else { | |
2881 | if (value < (UV)IV_MAX) | |
2882 | return (IV)value; | |
2883 | } | |
2884 | } | |
d008e5eb | 2885 | if (!numtype) { |
d008e5eb GS |
2886 | if (ckWARN(WARN_NUMERIC)) |
2887 | not_a_number(sv); | |
2888 | } | |
3f7c398e | 2889 | return I_V(Atof(SvPVX_const(sv))); |
36477c24 | 2890 | } |
2891 | ||
645c22ef DM |
2892 | /* asUV(): extract an unsigned integer from the string value of an SV |
2893 | * Caller must validate PVX */ | |
2894 | ||
76e3520e | 2895 | STATIC UV |
cea2e8a9 | 2896 | S_asUV(pTHX_ SV *sv) |
36477c24 | 2897 | { |
c2988b20 | 2898 | UV value; |
504618e9 | 2899 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), &value); |
36477c24 | 2900 | |
c2988b20 NC |
2901 | if ((numtype & (IS_NUMBER_IN_UV | IS_NUMBER_NOT_INT)) |
2902 | == IS_NUMBER_IN_UV) { | |
645c22ef | 2903 | /* It's definitely an integer */ |
6fa402ec | 2904 | if (!(numtype & IS_NUMBER_NEG)) |
c2988b20 NC |
2905 | return value; |
2906 | } | |
d008e5eb | 2907 | if (!numtype) { |
d008e5eb GS |
2908 | if (ckWARN(WARN_NUMERIC)) |
2909 | not_a_number(sv); | |
2910 | } | |
3f7c398e | 2911 | return U_V(Atof(SvPVX_const(sv))); |
36477c24 | 2912 | } |
2913 | ||
645c22ef DM |
2914 | /* |
2915 | =for apidoc sv_2pv_nolen | |
2916 | ||
2917 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
2918 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
2919 | =cut | |
2920 | */ | |
2921 | ||
79072805 | 2922 | char * |
864dbfa3 | 2923 | Perl_sv_2pv_nolen(pTHX_ register SV *sv) |
1fa8b10d | 2924 | { |
dafda6d1 | 2925 | return sv_2pv(sv, 0); |
1fa8b10d JD |
2926 | } |
2927 | ||
645c22ef DM |
2928 | /* uiv_2buf(): private routine for use by sv_2pv_flags(): print an IV or |
2929 | * UV as a string towards the end of buf, and return pointers to start and | |
2930 | * end of it. | |
2931 | * | |
2932 | * We assume that buf is at least TYPE_CHARS(UV) long. | |
2933 | */ | |
2934 | ||
864dbfa3 | 2935 | static char * |
25da4f38 IZ |
2936 | uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob) |
2937 | { | |
25da4f38 IZ |
2938 | char *ptr = buf + TYPE_CHARS(UV); |
2939 | char *ebuf = ptr; | |
2940 | int sign; | |
25da4f38 IZ |
2941 | |
2942 | if (is_uv) | |
2943 | sign = 0; | |
2944 | else if (iv >= 0) { | |
2945 | uv = iv; | |
2946 | sign = 0; | |
2947 | } else { | |
2948 | uv = -iv; | |
2949 | sign = 1; | |
2950 | } | |
2951 | do { | |
eb160463 | 2952 | *--ptr = '0' + (char)(uv % 10); |
25da4f38 IZ |
2953 | } while (uv /= 10); |
2954 | if (sign) | |
2955 | *--ptr = '-'; | |
2956 | *peob = ebuf; | |
2957 | return ptr; | |
2958 | } | |
2959 | ||
09540bc3 JH |
2960 | /* sv_2pv() is now a macro using Perl_sv_2pv_flags(); |
2961 | * this function provided for binary compatibility only | |
2962 | */ | |
2963 | ||
2964 | char * | |
2965 | Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp) | |
2966 | { | |
2967 | return sv_2pv_flags(sv, lp, SV_GMAGIC); | |
2968 | } | |
2969 | ||
645c22ef DM |
2970 | /* |
2971 | =for apidoc sv_2pv_flags | |
2972 | ||
ff276b08 | 2973 | Returns a pointer to the string value of an SV, and sets *lp to its length. |
645c22ef DM |
2974 | If flags includes SV_GMAGIC, does an mg_get() first. Coerces sv to a string |
2975 | if necessary. | |
2976 | Normally invoked via the C<SvPV_flags> macro. C<sv_2pv()> and C<sv_2pv_nomg> | |
2977 | usually end up here too. | |
2978 | ||
2979 | =cut | |
2980 | */ | |
2981 | ||
8d6d96c1 HS |
2982 | char * |
2983 | Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags) | |
2984 | { | |
79072805 LW |
2985 | register char *s; |
2986 | int olderrno; | |
cb50f42d | 2987 | SV *tsv, *origsv; |
25da4f38 IZ |
2988 | char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */ |
2989 | char *tmpbuf = tbuf; | |
79072805 | 2990 | |
463ee0b2 | 2991 | if (!sv) { |
cdb061a3 NC |
2992 | if (lp) |
2993 | *lp = 0; | |
73d840c0 | 2994 | return (char *)""; |
463ee0b2 | 2995 | } |
8990e307 | 2996 | if (SvGMAGICAL(sv)) { |
8d6d96c1 HS |
2997 | if (flags & SV_GMAGIC) |
2998 | mg_get(sv); | |
463ee0b2 | 2999 | if (SvPOKp(sv)) { |
cdb061a3 NC |
3000 | if (lp) |
3001 | *lp = SvCUR(sv); | |
10516c54 NC |
3002 | if (flags & SV_MUTABLE_RETURN) |
3003 | return SvPVX_mutable(sv); | |
4d84ee25 NC |
3004 | if (flags & SV_CONST_RETURN) |
3005 | return (char *)SvPVX_const(sv); | |
463ee0b2 LW |
3006 | return SvPVX(sv); |
3007 | } | |
cf2093f6 | 3008 | if (SvIOKp(sv)) { |
1c846c1f | 3009 | if (SvIsUV(sv)) |
57def98f | 3010 | (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv)); |
cf2093f6 | 3011 | else |
57def98f | 3012 | (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv)); |
46fc3d4c | 3013 | tsv = Nullsv; |
a0d0e21e | 3014 | goto tokensave; |
463ee0b2 LW |
3015 | } |
3016 | if (SvNOKp(sv)) { | |
2d4389e4 | 3017 | Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf); |
46fc3d4c | 3018 | tsv = Nullsv; |
a0d0e21e | 3019 | goto tokensave; |
463ee0b2 | 3020 | } |
16d20bd9 | 3021 | if (!SvROK(sv)) { |
d008e5eb | 3022 | if (!(SvFLAGS(sv) & SVs_PADTMP)) { |
d008e5eb | 3023 | if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing) |
29489e7c | 3024 | report_uninit(sv); |
c6ee37c5 | 3025 | } |
cdb061a3 NC |
3026 | if (lp) |
3027 | *lp = 0; | |
73d840c0 | 3028 | return (char *)""; |
16d20bd9 | 3029 | } |
463ee0b2 | 3030 | } |
ed6116ce LW |
3031 | if (SvTHINKFIRST(sv)) { |
3032 | if (SvROK(sv)) { | |
a0d0e21e | 3033 | SV* tmpstr; |
e1ec3a88 | 3034 | register const char *typestr; |
1554e226 | 3035 | if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) && |
b4b9a328 | 3036 | (!SvROK(tmpstr) || (SvRV(tmpstr) != SvRV(sv)))) { |
50adf7d2 NC |
3037 | /* Unwrap this: */ |
3038 | /* char *pv = lp ? SvPV(tmpstr, *lp) : SvPV_nolen(tmpstr); */ | |
3039 | ||
3040 | char *pv; | |
3041 | if ((SvFLAGS(tmpstr) & (SVf_POK)) == SVf_POK) { | |
3042 | if (flags & SV_CONST_RETURN) { | |
3043 | pv = (char *) SvPVX_const(tmpstr); | |
3044 | } else { | |
3045 | pv = (flags & SV_MUTABLE_RETURN) | |
3046 | ? SvPVX_mutable(tmpstr) : SvPVX(tmpstr); | |
3047 | } | |
3048 | if (lp) | |
3049 | *lp = SvCUR(tmpstr); | |
3050 | } else { | |
3051 | pv = sv_2pv_flags(tmpstr, lp, flags); | |
3052 | } | |
446eaa42 YST |
3053 | if (SvUTF8(tmpstr)) |
3054 | SvUTF8_on(sv); | |
3055 | else | |
3056 | SvUTF8_off(sv); | |
3057 | return pv; | |
3058 | } | |
cb50f42d | 3059 | origsv = sv; |
ed6116ce LW |
3060 | sv = (SV*)SvRV(sv); |
3061 | if (!sv) | |
e1ec3a88 | 3062 | typestr = "NULLREF"; |
ed6116ce | 3063 | else { |
f9277f47 IZ |
3064 | MAGIC *mg; |
3065 | ||
ed6116ce | 3066 | switch (SvTYPE(sv)) { |
f9277f47 IZ |
3067 | case SVt_PVMG: |
3068 | if ( ((SvFLAGS(sv) & | |
1c846c1f | 3069 | (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG)) |
faf82a0b | 3070 | == (SVs_OBJECT|SVs_SMG)) |
14befaf4 | 3071 | && (mg = mg_find(sv, PERL_MAGIC_qr))) { |
e1ec3a88 | 3072 | const regexp *re = (regexp *)mg->mg_obj; |
1bd3ad17 | 3073 | |
2cd61cdb | 3074 | if (!mg->mg_ptr) { |
e1ec3a88 | 3075 | const char *fptr = "msix"; |
8782bef2 GB |
3076 | char reflags[6]; |
3077 | char ch; | |
3078 | int left = 0; | |
3079 | int right = 4; | |
ff385a1b | 3080 | char need_newline = 0; |
eb160463 | 3081 | U16 reganch = (U16)((re->reganch & PMf_COMPILETIME) >> 12); |
8782bef2 | 3082 | |
155aba94 | 3083 | while((ch = *fptr++)) { |
8782bef2 GB |
3084 | if(reganch & 1) { |
3085 | reflags[left++] = ch; | |
3086 | } | |
3087 | else { | |
3088 | reflags[right--] = ch; | |
3089 | } | |
3090 | reganch >>= 1; | |
3091 | } | |
3092 | if(left != 4) { | |
3093 | reflags[left] = '-'; | |
3094 | left = 5; | |
3095 | } | |
3096 | ||
3097 | mg->mg_len = re->prelen + 4 + left; | |
ff385a1b JF |
3098 | /* |
3099 | * If /x was used, we have to worry about a regex | |
3100 | * ending with a comment later being embedded | |
3101 | * within another regex. If so, we don't want this | |
3102 | * regex's "commentization" to leak out to the | |
3103 | * right part of the enclosing regex, we must cap | |
3104 | * it with a newline. | |
3105 | * | |
3106 | * So, if /x was used, we scan backwards from the | |
3107 | * end of the regex. If we find a '#' before we | |
3108 | * find a newline, we need to add a newline | |
3109 | * ourself. If we find a '\n' first (or if we | |
3110 | * don't find '#' or '\n'), we don't need to add | |
3111 | * anything. -jfriedl | |
3112 | */ | |
3113 | if (PMf_EXTENDED & re->reganch) | |
3114 | { | |
e1ec3a88 | 3115 | const char *endptr = re->precomp + re->prelen; |
ff385a1b JF |
3116 | while (endptr >= re->precomp) |
3117 | { | |
e1ec3a88 | 3118 | const char c = *(endptr--); |
ff385a1b JF |
3119 | if (c == '\n') |
3120 | break; /* don't need another */ | |
3121 | if (c == '#') { | |
3122 | /* we end while in a comment, so we | |
3123 | need a newline */ | |
3124 | mg->mg_len++; /* save space for it */ | |
3125 | need_newline = 1; /* note to add it */ | |
ab01544f | 3126 | break; |
ff385a1b JF |
3127 | } |
3128 | } | |
3129 | } | |
3130 | ||
8782bef2 GB |
3131 | New(616, mg->mg_ptr, mg->mg_len + 1 + left, char); |
3132 | Copy("(?", mg->mg_ptr, 2, char); | |
3133 | Copy(reflags, mg->mg_ptr+2, left, char); | |
3134 | Copy(":", mg->mg_ptr+left+2, 1, char); | |
3135 | Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char); | |
ff385a1b JF |
3136 | if (need_newline) |
3137 | mg->mg_ptr[mg->mg_len - 2] = '\n'; | |
1bd3ad17 IZ |
3138 | mg->mg_ptr[mg->mg_len - 1] = ')'; |
3139 | mg->mg_ptr[mg->mg_len] = 0; | |
3140 | } | |
3280af22 | 3141 | PL_reginterp_cnt += re->program[0].next_off; |
cb50f42d YST |
3142 | |
3143 | if (re->reganch & ROPT_UTF8) | |
3144 | SvUTF8_on(origsv); | |
3145 | else | |
3146 | SvUTF8_off(origsv); | |
cdb061a3 NC |
3147 | if (lp) |
3148 | *lp = mg->mg_len; | |
1bd3ad17 | 3149 | return mg->mg_ptr; |
f9277f47 IZ |
3150 | } |
3151 | /* Fall through */ | |
ed6116ce LW |
3152 | case SVt_NULL: |
3153 | case SVt_IV: | |
3154 | case SVt_NV: | |
3155 | case SVt_RV: | |
3156 | case SVt_PV: | |
3157 | case SVt_PVIV: | |
3158 | case SVt_PVNV: | |
e1ec3a88 AL |
3159 | case SVt_PVBM: typestr = SvROK(sv) ? "REF" : "SCALAR"; break; |
3160 | case SVt_PVLV: typestr = SvROK(sv) ? "REF" | |
be65207d DM |
3161 | /* tied lvalues should appear to be |
3162 | * scalars for backwards compatitbility */ | |
3163 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
3164 | ? "SCALAR" : "LVALUE"; break; | |
e1ec3a88 AL |
3165 | case SVt_PVAV: typestr = "ARRAY"; break; |
3166 | case SVt_PVHV: typestr = "HASH"; break; | |
3167 | case SVt_PVCV: typestr = "CODE"; break; | |
3168 | case SVt_PVGV: typestr = "GLOB"; break; | |
3169 | case SVt_PVFM: typestr = "FORMAT"; break; | |
3170 | case SVt_PVIO: typestr = "IO"; break; | |
3171 | default: typestr = "UNKNOWN"; break; | |
ed6116ce | 3172 | } |
46fc3d4c | 3173 | tsv = NEWSV(0,0); |
a5cb6b62 | 3174 | if (SvOBJECT(sv)) { |
bfcb3514 | 3175 | const char *name = HvNAME_get(SvSTASH(sv)); |
a5cb6b62 | 3176 | Perl_sv_setpvf(aTHX_ tsv, "%s=%s(0x%"UVxf")", |
e1ec3a88 | 3177 | name ? name : "__ANON__" , typestr, PTR2UV(sv)); |
a5cb6b62 | 3178 | } |
ed6116ce | 3179 | else |
e1ec3a88 | 3180 | Perl_sv_setpvf(aTHX_ tsv, "%s(0x%"UVxf")", typestr, PTR2UV(sv)); |
a0d0e21e | 3181 | goto tokensaveref; |
463ee0b2 | 3182 | } |
cdb061a3 NC |
3183 | if (lp) |
3184 | *lp = strlen(typestr); | |
73d840c0 | 3185 | return (char *)typestr; |
79072805 | 3186 | } |
0336b60e | 3187 | if (SvREADONLY(sv) && !SvOK(sv)) { |
0336b60e | 3188 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 3189 | report_uninit(sv); |
cdb061a3 NC |
3190 | if (lp) |
3191 | *lp = 0; | |
73d840c0 | 3192 | return (char *)""; |
79072805 | 3193 | } |
79072805 | 3194 | } |
28e5dec8 JH |
3195 | if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) { |
3196 | /* I'm assuming that if both IV and NV are equally valid then | |
3197 | converting the IV is going to be more efficient */ | |
e1ec3a88 AL |
3198 | const U32 isIOK = SvIOK(sv); |
3199 | const U32 isUIOK = SvIsUV(sv); | |
28e5dec8 JH |
3200 | char buf[TYPE_CHARS(UV)]; |
3201 | char *ebuf, *ptr; | |
3202 | ||
3203 | if (SvTYPE(sv) < SVt_PVIV) | |
3204 | sv_upgrade(sv, SVt_PVIV); | |
3205 | if (isUIOK) | |
3206 | ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf); | |
3207 | else | |
3208 | ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf); | |
5902b6a9 NC |
3209 | /* inlined from sv_setpvn */ |
3210 | SvGROW_mutable(sv, (STRLEN)(ebuf - ptr + 1)); | |
4d84ee25 | 3211 | Move(ptr,SvPVX_mutable(sv),ebuf - ptr,char); |
28e5dec8 JH |
3212 | SvCUR_set(sv, ebuf - ptr); |
3213 | s = SvEND(sv); | |
3214 | *s = '\0'; | |
3215 | if (isIOK) | |
3216 | SvIOK_on(sv); | |
3217 | else | |
3218 | SvIOKp_on(sv); | |
3219 | if (isUIOK) | |
3220 | SvIsUV_on(sv); | |
3221 | } | |
3222 | else if (SvNOKp(sv)) { | |
79072805 LW |
3223 | if (SvTYPE(sv) < SVt_PVNV) |
3224 | sv_upgrade(sv, SVt_PVNV); | |
1c846c1f | 3225 | /* The +20 is pure guesswork. Configure test needed. --jhi */ |
5902b6a9 | 3226 | s = SvGROW_mutable(sv, NV_DIG + 20); |
79072805 | 3227 | olderrno = errno; /* some Xenix systems wipe out errno here */ |
79072805 | 3228 | #ifdef apollo |
463ee0b2 | 3229 | if (SvNVX(sv) == 0.0) |
79072805 LW |
3230 | (void)strcpy(s,"0"); |
3231 | else | |
3232 | #endif /*apollo*/ | |
bbce6d69 | 3233 | { |
2d4389e4 | 3234 | Gconvert(SvNVX(sv), NV_DIG, 0, s); |
bbce6d69 | 3235 | } |
79072805 | 3236 | errno = olderrno; |
a0d0e21e LW |
3237 | #ifdef FIXNEGATIVEZERO |
3238 | if (*s == '-' && s[1] == '0' && !s[2]) | |
3239 | strcpy(s,"0"); | |
3240 | #endif | |
79072805 LW |
3241 | while (*s) s++; |
3242 | #ifdef hcx | |
3243 | if (s[-1] == '.') | |
46fc3d4c | 3244 | *--s = '\0'; |
79072805 LW |
3245 | #endif |
3246 | } | |
79072805 | 3247 | else { |
0336b60e IZ |
3248 | if (ckWARN(WARN_UNINITIALIZED) |
3249 | && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP)) | |
29489e7c | 3250 | report_uninit(sv); |
cdb061a3 | 3251 | if (lp) |
a0d0e21e | 3252 | *lp = 0; |
25da4f38 IZ |
3253 | if (SvTYPE(sv) < SVt_PV) |
3254 | /* Typically the caller expects that sv_any is not NULL now. */ | |
3255 | sv_upgrade(sv, SVt_PV); | |
73d840c0 | 3256 | return (char *)""; |
79072805 | 3257 | } |
cdb061a3 NC |
3258 | { |
3259 | STRLEN len = s - SvPVX_const(sv); | |
3260 | if (lp) | |
3261 | *lp = len; | |
3262 | SvCUR_set(sv, len); | |
3263 | } | |
79072805 | 3264 | SvPOK_on(sv); |
1d7c1841 | 3265 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 3266 | PTR2UV(sv),SvPVX_const(sv))); |
4d84ee25 NC |
3267 | if (flags & SV_CONST_RETURN) |
3268 | return (char *)SvPVX_const(sv); | |
10516c54 NC |
3269 | if (flags & SV_MUTABLE_RETURN) |
3270 | return SvPVX_mutable(sv); | |
463ee0b2 | 3271 | return SvPVX(sv); |
a0d0e21e LW |
3272 | |
3273 | tokensave: | |
3274 | if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */ | |
3275 | /* Sneaky stuff here */ | |
3276 | ||
3277 | tokensaveref: | |
46fc3d4c | 3278 | if (!tsv) |
96827780 | 3279 | tsv = newSVpv(tmpbuf, 0); |
46fc3d4c | 3280 | sv_2mortal(tsv); |
cdb061a3 NC |
3281 | if (lp) |
3282 | *lp = SvCUR(tsv); | |
46fc3d4c | 3283 | return SvPVX(tsv); |
a0d0e21e LW |
3284 | } |
3285 | else { | |
27da23d5 | 3286 | dVAR; |
a0d0e21e | 3287 | STRLEN len; |
73d840c0 | 3288 | const char *t; |
46fc3d4c | 3289 | |
3290 | if (tsv) { | |
3291 | sv_2mortal(tsv); | |
3f7c398e | 3292 | t = SvPVX_const(tsv); |
46fc3d4c | 3293 | len = SvCUR(tsv); |
3294 | } | |
3295 | else { | |
96827780 MB |
3296 | t = tmpbuf; |
3297 | len = strlen(tmpbuf); | |
46fc3d4c | 3298 | } |
a0d0e21e | 3299 | #ifdef FIXNEGATIVEZERO |
46fc3d4c | 3300 | if (len == 2 && t[0] == '-' && t[1] == '0') { |
3301 | t = "0"; | |
3302 | len = 1; | |
3303 | } | |
a0d0e21e | 3304 | #endif |
862a34c6 | 3305 | SvUPGRADE(sv, SVt_PV); |
cdb061a3 NC |
3306 | if (lp) |
3307 | *lp = len; | |
5902b6a9 | 3308 | s = SvGROW_mutable(sv, len + 1); |
a0d0e21e | 3309 | SvCUR_set(sv, len); |
6bf554b4 | 3310 | SvPOKp_on(sv); |
e90e2364 | 3311 | return strcpy(s, t); |
a0d0e21e | 3312 | } |
463ee0b2 LW |
3313 | } |
3314 | ||
645c22ef | 3315 | /* |
6050d10e JP |
3316 | =for apidoc sv_copypv |
3317 | ||
3318 | Copies a stringified representation of the source SV into the | |
3319 | destination SV. Automatically performs any necessary mg_get and | |
54f0641b | 3320 | coercion of numeric values into strings. Guaranteed to preserve |
6050d10e | 3321 | UTF-8 flag even from overloaded objects. Similar in nature to |
54f0641b NIS |
3322 | sv_2pv[_flags] but operates directly on an SV instead of just the |
3323 | string. Mostly uses sv_2pv_flags to do its work, except when that | |
6050d10e JP |
3324 | would lose the UTF-8'ness of the PV. |
3325 | ||
3326 | =cut | |
3327 | */ | |
3328 | ||
3329 | void | |
3330 | Perl_sv_copypv(pTHX_ SV *dsv, register SV *ssv) | |
3331 | { | |
446eaa42 | 3332 | STRLEN len; |
53c1dcc0 | 3333 | const char * const s = SvPV_const(ssv,len); |
cb50f42d | 3334 | sv_setpvn(dsv,s,len); |
446eaa42 | 3335 | if (SvUTF8(ssv)) |
cb50f42d | 3336 | SvUTF8_on(dsv); |
446eaa42 | 3337 | else |
cb50f42d | 3338 | SvUTF8_off(dsv); |
6050d10e JP |
3339 | } |
3340 | ||
3341 | /* | |
645c22ef DM |
3342 | =for apidoc sv_2pvbyte_nolen |
3343 | ||
3344 | Return a pointer to the byte-encoded representation of the SV. | |
1e54db1a | 3345 | May cause the SV to be downgraded from UTF-8 as a side-effect. |
645c22ef DM |
3346 | |
3347 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
3348 | ||
3349 | =cut | |
3350 | */ | |
3351 | ||
7340a771 GS |
3352 | char * |
3353 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
3354 | { | |
dafda6d1 | 3355 | return sv_2pvbyte(sv, 0); |
7340a771 GS |
3356 | } |
3357 | ||
645c22ef DM |
3358 | /* |
3359 | =for apidoc sv_2pvbyte | |
3360 | ||
3361 | Return a pointer to the byte-encoded representation of the SV, and set *lp | |
1e54db1a | 3362 | to its length. May cause the SV to be downgraded from UTF-8 as a |
645c22ef DM |
3363 | side-effect. |
3364 | ||
3365 | Usually accessed via the C<SvPVbyte> macro. | |
3366 | ||
3367 | =cut | |
3368 | */ | |
3369 | ||
7340a771 GS |
3370 | char * |
3371 | Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp) | |
3372 | { | |
0875d2fe | 3373 | sv_utf8_downgrade(sv,0); |
97972285 | 3374 | return lp ? SvPV(sv,*lp) : SvPV_nolen(sv); |
7340a771 GS |
3375 | } |
3376 | ||
645c22ef DM |
3377 | /* |
3378 | =for apidoc sv_2pvutf8_nolen | |
3379 | ||
1e54db1a JH |
3380 | Return a pointer to the UTF-8-encoded representation of the SV. |
3381 | May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3382 | |
3383 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
3384 | ||
3385 | =cut | |
3386 | */ | |
3387 | ||
7340a771 GS |
3388 | char * |
3389 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
3390 | { | |
dafda6d1 | 3391 | return sv_2pvutf8(sv, 0); |
7340a771 GS |
3392 | } |
3393 | ||
645c22ef DM |
3394 | /* |
3395 | =for apidoc sv_2pvutf8 | |
3396 | ||
1e54db1a JH |
3397 | Return a pointer to the UTF-8-encoded representation of the SV, and set *lp |
3398 | to its length. May cause the SV to be upgraded to UTF-8 as a side-effect. | |
645c22ef DM |
3399 | |
3400 | Usually accessed via the C<SvPVutf8> macro. | |
3401 | ||
3402 | =cut | |
3403 | */ | |
3404 | ||
7340a771 GS |
3405 | char * |
3406 | Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp) | |
3407 | { | |
560a288e | 3408 | sv_utf8_upgrade(sv); |
7d59b7e4 | 3409 | return SvPV(sv,*lp); |
7340a771 | 3410 | } |
1c846c1f | 3411 | |
645c22ef DM |
3412 | /* |
3413 | =for apidoc sv_2bool | |
3414 | ||
3415 | This function is only called on magical items, and is only used by | |
8cf8f3d1 | 3416 | sv_true() or its macro equivalent. |
645c22ef DM |
3417 | |
3418 | =cut | |
3419 | */ | |
3420 | ||
463ee0b2 | 3421 | bool |
864dbfa3 | 3422 | Perl_sv_2bool(pTHX_ register SV *sv) |
463ee0b2 | 3423 | { |
8990e307 | 3424 | if (SvGMAGICAL(sv)) |
463ee0b2 LW |
3425 | mg_get(sv); |
3426 | ||
a0d0e21e LW |
3427 | if (!SvOK(sv)) |
3428 | return 0; | |
3429 | if (SvROK(sv)) { | |
a0d0e21e | 3430 | SV* tmpsv; |
1554e226 | 3431 | if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) && |
9e3013b1 | 3432 | (!SvROK(tmpsv) || (SvRV(tmpsv) != SvRV(sv)))) |
8a31060d | 3433 | return (bool)SvTRUE(tmpsv); |
a0d0e21e LW |
3434 | return SvRV(sv) != 0; |
3435 | } | |
463ee0b2 | 3436 | if (SvPOKp(sv)) { |
53c1dcc0 AL |
3437 | register XPV* const Xpvtmp = (XPV*)SvANY(sv); |
3438 | if (Xpvtmp && | |
339049b0 | 3439 | (*sv->sv_u.svu_pv > '0' || |
11343788 | 3440 | Xpvtmp->xpv_cur > 1 || |
339049b0 | 3441 | (Xpvtmp->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
463ee0b2 LW |
3442 | return 1; |
3443 | else | |
3444 | return 0; | |
3445 | } | |
3446 | else { | |
3447 | if (SvIOKp(sv)) | |
3448 | return SvIVX(sv) != 0; | |
3449 | else { | |
3450 | if (SvNOKp(sv)) | |
3451 | return SvNVX(sv) != 0.0; | |
3452 | else | |
3453 | return FALSE; | |
3454 | } | |
3455 | } | |
79072805 LW |
3456 | } |
3457 | ||
09540bc3 JH |
3458 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
3459 | * this function provided for binary compatibility only | |
3460 | */ | |
3461 | ||
3462 | ||
3463 | STRLEN | |
3464 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
3465 | { | |
3466 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
3467 | } | |
3468 | ||
c461cf8f JH |
3469 | /* |
3470 | =for apidoc sv_utf8_upgrade | |
3471 | ||
78ea37eb | 3472 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3473 | Forces the SV to string form if it is not already. |
4411f3b6 NIS |
3474 | Always sets the SvUTF8 flag to avoid future validity checks even |
3475 | if all the bytes have hibit clear. | |
c461cf8f | 3476 | |
13a6c0e0 JH |
3477 | This is not as a general purpose byte encoding to Unicode interface: |
3478 | use the Encode extension for that. | |
3479 | ||
8d6d96c1 HS |
3480 | =for apidoc sv_utf8_upgrade_flags |
3481 | ||
78ea37eb | 3482 | Converts the PV of an SV to its UTF-8-encoded form. |
645c22ef | 3483 | Forces the SV to string form if it is not already. |
8d6d96c1 HS |
3484 | Always sets the SvUTF8 flag to avoid future validity checks even |
3485 | if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set, | |
3486 | will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and | |
3487 | C<sv_utf8_upgrade_nomg> are implemented in terms of this function. | |
3488 | ||
13a6c0e0 JH |
3489 | This is not as a general purpose byte encoding to Unicode interface: |
3490 | use the Encode extension for that. | |
3491 | ||
8d6d96c1 HS |
3492 | =cut |
3493 | */ | |
3494 | ||
3495 | STRLEN | |
3496 | Perl_sv_utf8_upgrade_flags(pTHX_ register SV *sv, I32 flags) | |
3497 | { | |
808c356f RGS |
3498 | if (sv == &PL_sv_undef) |
3499 | return 0; | |
e0e62c2a NIS |
3500 | if (!SvPOK(sv)) { |
3501 | STRLEN len = 0; | |
d52b7888 NC |
3502 | if (SvREADONLY(sv) && (SvPOKp(sv) || SvIOKp(sv) || SvNOKp(sv))) { |
3503 | (void) sv_2pv_flags(sv,&len, flags); | |
3504 | if (SvUTF8(sv)) | |
3505 | return len; | |
3506 | } else { | |
3507 | (void) SvPV_force(sv,len); | |
3508 | } | |
e0e62c2a | 3509 | } |
4411f3b6 | 3510 | |
f5cee72b | 3511 | if (SvUTF8(sv)) { |
5fec3b1d | 3512 | return SvCUR(sv); |
f5cee72b | 3513 | } |
5fec3b1d | 3514 | |
765f542d NC |
3515 | if (SvIsCOW(sv)) { |
3516 | sv_force_normal_flags(sv, 0); | |
db42d148 NIS |
3517 | } |
3518 | ||
88632417 | 3519 | if (PL_encoding && !(flags & SV_UTF8_NO_ENCODING)) |
799ef3cb | 3520 | sv_recode_to_utf8(sv, PL_encoding); |
9f4817db | 3521 | else { /* Assume Latin-1/EBCDIC */ |
c4e7c712 NC |
3522 | /* This function could be much more efficient if we |
3523 | * had a FLAG in SVs to signal if there are any hibit | |
3524 | * chars in the PV. Given that there isn't such a flag | |
3525 | * make the loop as fast as possible. */ | |
93524f2b NC |
3526 | const U8 *s = (U8 *) SvPVX_const(sv); |
3527 | const U8 *e = (U8 *) SvEND(sv); | |
3528 | const U8 *t = s; | |
c4e7c712 NC |
3529 | int hibit = 0; |
3530 | ||
3531 | while (t < e) { | |
53c1dcc0 | 3532 | const U8 ch = *t++; |
c4e7c712 NC |
3533 | if ((hibit = !NATIVE_IS_INVARIANT(ch))) |
3534 | break; | |
3535 | } | |
3536 | if (hibit) { | |
3537 | STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */ | |
53c1dcc0 | 3538 | U8 * const recoded = bytes_to_utf8((U8*)s, &len); |
c4e7c712 NC |
3539 | |
3540 | SvPV_free(sv); /* No longer using what was there before. */ | |
3541 | ||
1e2ebb21 | 3542 | SvPV_set(sv, (char*)recoded); |
c4e7c712 NC |
3543 | SvCUR_set(sv, len - 1); |
3544 | SvLEN_set(sv, len); /* No longer know the real size. */ | |
3545 | } | |
3546 | /* Mark as UTF-8 even if no hibit - saves scanning loop */ | |
3547 | SvUTF8_on(sv); | |
560a288e | 3548 | } |
4411f3b6 | 3549 | return SvCUR(sv); |
560a288e GS |
3550 | } |
3551 | ||
c461cf8f JH |
3552 | /* |
3553 | =for apidoc sv_utf8_downgrade | |
3554 | ||
78ea37eb TS |
3555 | Attempts to convert the PV of an SV from characters to bytes. |
3556 | If the PV contains a character beyond byte, this conversion will fail; | |
3557 | in this case, either returns false or, if C<fail_ok> is not | |
c461cf8f JH |
3558 | true, croaks. |
3559 | ||
13a6c0e0 JH |
3560 | This is not as a general purpose Unicode to byte encoding interface: |
3561 | use the Encode extension for that. | |
3562 | ||
c461cf8f JH |
3563 | =cut |
3564 | */ | |
3565 | ||
560a288e GS |
3566 | bool |
3567 | Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok) | |
3568 | { | |
78ea37eb | 3569 | if (SvPOKp(sv) && SvUTF8(sv)) { |
fa301091 | 3570 | if (SvCUR(sv)) { |
03cfe0ae | 3571 | U8 *s; |
652088fc | 3572 | STRLEN len; |
fa301091 | 3573 | |
765f542d NC |
3574 | if (SvIsCOW(sv)) { |
3575 | sv_force_normal_flags(sv, 0); | |
3576 | } | |
03cfe0ae NIS |
3577 | s = (U8 *) SvPV(sv, len); |
3578 | if (!utf8_to_bytes(s, &len)) { | |
fa301091 JH |
3579 | if (fail_ok) |
3580 | return FALSE; | |
3581 | else { | |
3582 | if (PL_op) | |
3583 | Perl_croak(aTHX_ "Wide character in %s", | |
53e06cf0 | 3584 | OP_DESC(PL_op)); |
fa301091 JH |
3585 | else |
3586 | Perl_croak(aTHX_ "Wide character"); | |
3587 | } | |
4b3603a4 | 3588 | } |
b162af07 | 3589 | SvCUR_set(sv, len); |
67e989fb | 3590 | } |
560a288e | 3591 | } |
ffebcc3e | 3592 | SvUTF8_off(sv); |
560a288e GS |
3593 | return TRUE; |
3594 | } | |
3595 | ||
c461cf8f JH |
3596 | /* |
3597 | =for apidoc sv_utf8_encode | |
3598 | ||
78ea37eb TS |
3599 | Converts the PV of an SV to UTF-8, but then turns the C<SvUTF8> |
3600 | flag off so that it looks like octets again. | |
c461cf8f JH |
3601 | |
3602 | =cut | |
3603 | */ | |
3604 | ||
560a288e GS |
3605 | void |
3606 | Perl_sv_utf8_encode(pTHX_ register SV *sv) | |
3607 | { | |
4411f3b6 | 3608 | (void) sv_utf8_upgrade(sv); |
4c94c214 NC |
3609 | if (SvIsCOW(sv)) { |
3610 | sv_force_normal_flags(sv, 0); | |
3611 | } | |
3612 | if (SvREADONLY(sv)) { | |
3613 | Perl_croak(aTHX_ PL_no_modify); | |
3614 | } | |
560a288e GS |
3615 | SvUTF8_off(sv); |
3616 | } | |
3617 | ||
4411f3b6 NIS |
3618 | /* |
3619 | =for apidoc sv_utf8_decode | |
3620 | ||
78ea37eb TS |
3621 | If the PV of the SV is an octet sequence in UTF-8 |
3622 | and contains a multiple-byte character, the C<SvUTF8> flag is turned on | |
3623 | so that it looks like a character. If the PV contains only single-byte | |
3624 | characters, the C<SvUTF8> flag stays being off. | |
3625 | Scans PV for validity and returns false if the PV is invalid UTF-8. | |
4411f3b6 NIS |
3626 | |
3627 | =cut | |
3628 | */ | |
3629 | ||
560a288e GS |
3630 | bool |
3631 | Perl_sv_utf8_decode(pTHX_ register SV *sv) | |
3632 | { | |
78ea37eb | 3633 | if (SvPOKp(sv)) { |
93524f2b NC |
3634 | const U8 *c; |
3635 | const U8 *e; | |
9cbac4c7 | 3636 | |
645c22ef DM |
3637 | /* The octets may have got themselves encoded - get them back as |
3638 | * bytes | |
3639 | */ | |
3640 | if (!sv_utf8_downgrade(sv, TRUE)) | |
560a288e GS |
3641 | return FALSE; |
3642 | ||
3643 | /* it is actually just a matter of turning the utf8 flag on, but | |
3644 | * we want to make sure everything inside is valid utf8 first. | |
3645 | */ | |
93524f2b | 3646 | c = (const U8 *) SvPVX_const(sv); |
63cd0674 | 3647 | if (!is_utf8_string(c, SvCUR(sv)+1)) |
67e989fb | 3648 | return FALSE; |
93524f2b | 3649 | e = (const U8 *) SvEND(sv); |
511c2ff0 | 3650 | while (c < e) { |
c4d5f83a NIS |
3651 | U8 ch = *c++; |
3652 | if (!UTF8_IS_INVARIANT(ch)) { | |
67e989fb JH |
3653 | SvUTF8_on(sv); |
3654 | break; | |
3655 | } | |
560a288e | 3656 | } |
560a288e GS |
3657 | } |
3658 | return TRUE; | |
3659 | } | |
3660 | ||
09540bc3 JH |
3661 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); |
3662 | * this function provided for binary compatibility only | |
3663 | */ | |
3664 | ||
3665 | void | |
3666 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
3667 | { | |
3668 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
3669 | } | |
3670 | ||
954c1994 GS |
3671 | /* |
3672 | =for apidoc sv_setsv | |
3673 | ||
645c22ef DM |
3674 | Copies the contents of the source SV C<ssv> into the destination SV |
3675 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3676 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3677 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3678 | content of the destination. | |
3679 | ||
3680 | You probably want to use one of the assortment of wrappers, such as | |
3681 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3682 | C<SvSetMagicSV_nosteal>. | |
3683 | ||
8d6d96c1 HS |
3684 | =for apidoc sv_setsv_flags |
3685 | ||
645c22ef DM |
3686 | Copies the contents of the source SV C<ssv> into the destination SV |
3687 | C<dsv>. The source SV may be destroyed if it is mortal, so don't use this | |
3688 | function if the source SV needs to be reused. Does not handle 'set' magic. | |
3689 | Loosely speaking, it performs a copy-by-value, obliterating any previous | |
3690 | content of the destination. | |
3691 | If the C<flags> parameter has the C<SV_GMAGIC> bit set, will C<mg_get> on | |
5fcdf167 NC |
3692 | C<ssv> if appropriate, else not. If the C<flags> parameter has the |
3693 | C<NOSTEAL> bit set then the buffers of temps will not be stolen. <sv_setsv> | |
3694 | and C<sv_setsv_nomg> are implemented in terms of this function. | |
645c22ef DM |
3695 | |
3696 | You probably want to use one of the assortment of wrappers, such as | |
3697 | C<SvSetSV>, C<SvSetSV_nosteal>, C<SvSetMagicSV> and | |
3698 | C<SvSetMagicSV_nosteal>. | |
3699 | ||
3700 | This is the primary function for copying scalars, and most other | |
3701 | copy-ish functions and macros use this underneath. | |
8d6d96c1 HS |
3702 | |
3703 | =cut | |
3704 | */ | |
3705 | ||
3706 | void | |
3707 | Perl_sv_setsv_flags(pTHX_ SV *dstr, register SV *sstr, I32 flags) | |
3708 | { | |
8990e307 LW |
3709 | register U32 sflags; |
3710 | register int dtype; | |
3711 | register int stype; | |
463ee0b2 | 3712 | |
79072805 LW |
3713 | if (sstr == dstr) |
3714 | return; | |
765f542d | 3715 | SV_CHECK_THINKFIRST_COW_DROP(dstr); |
79072805 | 3716 | if (!sstr) |
3280af22 | 3717 | sstr = &PL_sv_undef; |
8990e307 LW |
3718 | stype = SvTYPE(sstr); |
3719 | dtype = SvTYPE(dstr); | |
79072805 | 3720 | |
a0d0e21e | 3721 | SvAMAGIC_off(dstr); |
7a5fa8a2 | 3722 | if ( SvVOK(dstr) ) |
ece467f9 JP |
3723 | { |
3724 | /* need to nuke the magic */ | |
3725 | mg_free(dstr); | |
3726 | SvRMAGICAL_off(dstr); | |
3727 | } | |
9e7bc3e8 | 3728 | |
463ee0b2 | 3729 | /* There's a lot of redundancy below but we're going for speed here */ |
79072805 | 3730 | |
8990e307 | 3731 | switch (stype) { |
79072805 | 3732 | case SVt_NULL: |
aece5585 | 3733 | undef_sstr: |
20408e3c GS |
3734 | if (dtype != SVt_PVGV) { |
3735 | (void)SvOK_off(dstr); | |
3736 | return; | |
3737 | } | |
3738 | break; | |
463ee0b2 | 3739 | case SVt_IV: |
aece5585 GA |
3740 | if (SvIOK(sstr)) { |
3741 | switch (dtype) { | |
3742 | case SVt_NULL: | |
8990e307 | 3743 | sv_upgrade(dstr, SVt_IV); |
aece5585 GA |
3744 | break; |
3745 | case SVt_NV: | |
8990e307 | 3746 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3747 | break; |
3748 | case SVt_RV: | |
3749 | case SVt_PV: | |
a0d0e21e | 3750 | sv_upgrade(dstr, SVt_PVIV); |
aece5585 GA |
3751 | break; |
3752 | } | |
3753 | (void)SvIOK_only(dstr); | |
45977657 | 3754 | SvIV_set(dstr, SvIVX(sstr)); |
25da4f38 IZ |
3755 | if (SvIsUV(sstr)) |
3756 | SvIsUV_on(dstr); | |
27c9684d AP |
3757 | if (SvTAINTED(sstr)) |
3758 | SvTAINT(dstr); | |
aece5585 | 3759 | return; |
8990e307 | 3760 | } |
aece5585 GA |
3761 | goto undef_sstr; |
3762 | ||
463ee0b2 | 3763 | case SVt_NV: |
aece5585 GA |
3764 | if (SvNOK(sstr)) { |
3765 | switch (dtype) { | |
3766 | case SVt_NULL: | |
3767 | case SVt_IV: | |
8990e307 | 3768 | sv_upgrade(dstr, SVt_NV); |
aece5585 GA |
3769 | break; |
3770 | case SVt_RV: | |
3771 | case SVt_PV: | |
3772 | case SVt_PVIV: | |
a0d0e21e | 3773 | sv_upgrade(dstr, SVt_PVNV); |
aece5585 GA |
3774 | break; |
3775 | } | |
9d6ce603 | 3776 | SvNV_set(dstr, SvNVX(sstr)); |
aece5585 | 3777 | (void)SvNOK_only(dstr); |
27c9684d AP |
3778 | if (SvTAINTED(sstr)) |
3779 | SvTAINT(dstr); | |
aece5585 | 3780 | return; |
8990e307 | 3781 | } |
aece5585 GA |
3782 | goto undef_sstr; |
3783 | ||
ed6116ce | 3784 | case SVt_RV: |
8990e307 | 3785 | if (dtype < SVt_RV) |
ed6116ce | 3786 | sv_upgrade(dstr, SVt_RV); |
c07a80fd | 3787 | else if (dtype == SVt_PVGV && |
23bb1b96 | 3788 | SvROK(sstr) && SvTYPE(SvRV(sstr)) == SVt_PVGV) { |
c07a80fd | 3789 | sstr = SvRV(sstr); |
a5f75d66 | 3790 | if (sstr == dstr) { |
1d7c1841 GS |
3791 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3792 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3793 | { | |
a5f75d66 | 3794 | GvIMPORTED_on(dstr); |
1d7c1841 | 3795 | } |
a5f75d66 AD |
3796 | GvMULTI_on(dstr); |
3797 | return; | |
3798 | } | |
c07a80fd | 3799 | goto glob_assign; |
3800 | } | |
ed6116ce | 3801 | break; |
fc36a67e | 3802 | case SVt_PVFM: |
f8c7b90f | 3803 | #ifdef PERL_OLD_COPY_ON_WRITE |
d89fc664 NC |
3804 | if ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
3805 | if (dtype < SVt_PVIV) | |
3806 | sv_upgrade(dstr, SVt_PVIV); | |
3807 | break; | |
3808 | } | |
3809 | /* Fall through */ | |
3810 | #endif | |
3811 | case SVt_PV: | |
8990e307 | 3812 | if (dtype < SVt_PV) |
463ee0b2 | 3813 | sv_upgrade(dstr, SVt_PV); |
463ee0b2 LW |
3814 | break; |
3815 | case SVt_PVIV: | |
8990e307 | 3816 | if (dtype < SVt_PVIV) |
463ee0b2 | 3817 | sv_upgrade(dstr, SVt_PVIV); |
463ee0b2 LW |
3818 | break; |
3819 | case SVt_PVNV: | |
8990e307 | 3820 | if (dtype < SVt_PVNV) |
463ee0b2 | 3821 | sv_upgrade(dstr, SVt_PVNV); |
463ee0b2 | 3822 | break; |
4633a7c4 LW |
3823 | case SVt_PVAV: |
3824 | case SVt_PVHV: | |
3825 | case SVt_PVCV: | |
4633a7c4 | 3826 | case SVt_PVIO: |
a3b680e6 AL |
3827 | { |
3828 | const char * const type = sv_reftype(sstr,0); | |
533c011a | 3829 | if (PL_op) |
a3b680e6 | 3830 | Perl_croak(aTHX_ "Bizarre copy of %s in %s", type, OP_NAME(PL_op)); |
4633a7c4 | 3831 | else |
a3b680e6 AL |
3832 | Perl_croak(aTHX_ "Bizarre copy of %s", type); |
3833 | } | |
4633a7c4 LW |
3834 | break; |
3835 | ||
79072805 | 3836 | case SVt_PVGV: |
8990e307 | 3837 | if (dtype <= SVt_PVGV) { |
c07a80fd | 3838 | glob_assign: |
a5f75d66 | 3839 | if (dtype != SVt_PVGV) { |
a3b680e6 AL |
3840 | const char * const name = GvNAME(sstr); |
3841 | const STRLEN len = GvNAMELEN(sstr); | |
b76195c2 DM |
3842 | /* don't upgrade SVt_PVLV: it can hold a glob */ |
3843 | if (dtype != SVt_PVLV) | |
3844 | sv_upgrade(dstr, SVt_PVGV); | |
14befaf4 | 3845 | sv_magic(dstr, dstr, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 3846 | GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr)); |
a0d0e21e LW |
3847 | GvNAME(dstr) = savepvn(name, len); |
3848 | GvNAMELEN(dstr) = len; | |
3849 | SvFAKE_on(dstr); /* can coerce to non-glob */ | |
3850 | } | |
7bac28a0 | 3851 | /* ahem, death to those who redefine active sort subs */ |
3280af22 NIS |
3852 | else if (PL_curstackinfo->si_type == PERLSI_SORT |
3853 | && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr))) | |
cea2e8a9 | 3854 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", |
7bac28a0 | 3855 | GvNAME(dstr)); |
5bd07a3d | 3856 | |
7fb37951 AMS |
3857 | #ifdef GV_UNIQUE_CHECK |
3858 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3859 | Perl_croak(aTHX_ PL_no_modify); |
3860 | } | |
3861 | #endif | |
3862 | ||
a0d0e21e | 3863 | (void)SvOK_off(dstr); |
a5f75d66 | 3864 | GvINTRO_off(dstr); /* one-shot flag */ |
1edc1566 | 3865 | gp_free((GV*)dstr); |
79072805 | 3866 | GvGP(dstr) = gp_ref(GvGP(sstr)); |
27c9684d AP |
3867 | if (SvTAINTED(sstr)) |
3868 | SvTAINT(dstr); | |
1d7c1841 GS |
3869 | if (GvIMPORTED(dstr) != GVf_IMPORTED |
3870 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) | |
3871 | { | |
a5f75d66 | 3872 | GvIMPORTED_on(dstr); |
1d7c1841 | 3873 | } |
a5f75d66 | 3874 | GvMULTI_on(dstr); |
79072805 LW |
3875 | return; |
3876 | } | |
3877 | /* FALL THROUGH */ | |
3878 | ||
3879 | default: | |
8d6d96c1 | 3880 | if (SvGMAGICAL(sstr) && (flags & SV_GMAGIC)) { |
973f89ab | 3881 | mg_get(sstr); |
eb160463 | 3882 | if ((int)SvTYPE(sstr) != stype) { |
973f89ab CS |
3883 | stype = SvTYPE(sstr); |
3884 | if (stype == SVt_PVGV && dtype <= SVt_PVGV) | |
3885 | goto glob_assign; | |
3886 | } | |
3887 | } | |
ded42b9f | 3888 | if (stype == SVt_PVLV) |
862a34c6 | 3889 | SvUPGRADE(dstr, SVt_PVNV); |
ded42b9f | 3890 | else |
862a34c6 | 3891 | SvUPGRADE(dstr, (U32)stype); |
79072805 LW |
3892 | } |
3893 | ||
8990e307 LW |
3894 | sflags = SvFLAGS(sstr); |
3895 | ||
3896 | if (sflags & SVf_ROK) { | |
3897 | if (dtype >= SVt_PV) { | |
3898 | if (dtype == SVt_PVGV) { | |
3899 | SV *sref = SvREFCNT_inc(SvRV(sstr)); | |
3900 | SV *dref = 0; | |
a3b680e6 | 3901 | const int intro = GvINTRO(dstr); |
a0d0e21e | 3902 | |
7fb37951 AMS |
3903 | #ifdef GV_UNIQUE_CHECK |
3904 | if (GvUNIQUE((GV*)dstr)) { | |
5bd07a3d DM |
3905 | Perl_croak(aTHX_ PL_no_modify); |
3906 | } | |
3907 | #endif | |
3908 | ||
a0d0e21e | 3909 | if (intro) { |
a5f75d66 | 3910 | GvINTRO_off(dstr); /* one-shot flag */ |
1d7c1841 | 3911 | GvLINE(dstr) = CopLINE(PL_curcop); |
1edc1566 | 3912 | GvEGV(dstr) = (GV*)dstr; |
a0d0e21e | 3913 | } |
a5f75d66 | 3914 | GvMULTI_on(dstr); |
8990e307 LW |
3915 | switch (SvTYPE(sref)) { |
3916 | case SVt_PVAV: | |
a0d0e21e | 3917 | if (intro) |
890ed176 | 3918 | SAVEGENERICSV(GvAV(dstr)); |
a0d0e21e LW |
3919 | else |
3920 | dref = (SV*)GvAV(dstr); | |
8990e307 | 3921 | GvAV(dstr) = (AV*)sref; |
39bac7f7 | 3922 | if (!GvIMPORTED_AV(dstr) |
1d7c1841 GS |
3923 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3924 | { | |
a5f75d66 | 3925 | GvIMPORTED_AV_on(dstr); |
1d7c1841 | 3926 | } |
8990e307 LW |
3927 | break; |
3928 | case SVt_PVHV: | |
a0d0e21e | 3929 | if (intro) |
890ed176 | 3930 | SAVEGENERICSV(GvHV(dstr)); |
a0d0e21e LW |
3931 | else |
3932 | dref = (SV*)GvHV(dstr); | |
8990e307 | 3933 | GvHV(dstr) = (HV*)sref; |
39bac7f7 | 3934 | if (!GvIMPORTED_HV(dstr) |
1d7c1841 GS |
3935 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3936 | { | |
a5f75d66 | 3937 | GvIMPORTED_HV_on(dstr); |
1d7c1841 | 3938 | } |
8990e307 LW |
3939 | break; |
3940 | case SVt_PVCV: | |
8ebc5c01 | 3941 | if (intro) { |
3942 | if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) { | |
3943 | SvREFCNT_dec(GvCV(dstr)); | |
3944 | GvCV(dstr) = Nullcv; | |
68dc0745 | 3945 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
3280af22 | 3946 | PL_sub_generation++; |
8ebc5c01 | 3947 | } |
890ed176 | 3948 | SAVEGENERICSV(GvCV(dstr)); |
8ebc5c01 | 3949 | } |
68dc0745 | 3950 | else |
3951 | dref = (SV*)GvCV(dstr); | |
3952 | if (GvCV(dstr) != (CV*)sref) { | |
748a9306 | 3953 | CV* cv = GvCV(dstr); |
4633a7c4 | 3954 | if (cv) { |
68dc0745 | 3955 | if (!GvCVGEN((GV*)dstr) && |
3956 | (CvROOT(cv) || CvXSUB(cv))) | |
3957 | { | |
7bac28a0 | 3958 | /* ahem, death to those who redefine |
3959 | * active sort subs */ | |
3280af22 NIS |
3960 | if (PL_curstackinfo->si_type == PERLSI_SORT && |
3961 | PL_sortcop == CvSTART(cv)) | |
1c846c1f | 3962 | Perl_croak(aTHX_ |
7bac28a0 | 3963 | "Can't redefine active sort subroutine %s", |
3964 | GvENAME((GV*)dstr)); | |
beab0874 JT |
3965 | /* Redefining a sub - warning is mandatory if |
3966 | it was a const and its value changed. */ | |
3967 | if (ckWARN(WARN_REDEFINE) | |
3968 | || (CvCONST(cv) | |
3969 | && (!CvCONST((CV*)sref) | |
3970 | || sv_cmp(cv_const_sv(cv), | |
3971 | cv_const_sv((CV*)sref))))) | |
3972 | { | |
9014280d | 3973 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 | 3974 | CvCONST(cv) |
910764e6 RGS |
3975 | ? "Constant subroutine %s::%s redefined" |
3976 | : "Subroutine %s::%s redefined", | |
bfcb3514 | 3977 | HvNAME_get(GvSTASH((GV*)dstr)), |
beab0874 JT |
3978 | GvENAME((GV*)dstr)); |
3979 | } | |
9607fc9c | 3980 | } |
fb24441d RGS |
3981 | if (!intro) |
3982 | cv_ckproto(cv, (GV*)dstr, | |
93524f2b NC |
3983 | SvPOK(sref) |
3984 | ? SvPVX_const(sref) : Nullch); | |
4633a7c4 | 3985 | } |
a5f75d66 | 3986 | GvCV(dstr) = (CV*)sref; |
7a4c00b4 | 3987 | GvCVGEN(dstr) = 0; /* Switch off cacheness. */ |
a5f75d66 | 3988 | GvASSUMECV_on(dstr); |
3280af22 | 3989 | PL_sub_generation++; |
a5f75d66 | 3990 | } |
39bac7f7 | 3991 | if (!GvIMPORTED_CV(dstr) |
1d7c1841 GS |
3992 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
3993 | { | |
a5f75d66 | 3994 | GvIMPORTED_CV_on(dstr); |
1d7c1841 | 3995 | } |
8990e307 | 3996 | break; |
91bba347 LW |
3997 | case SVt_PVIO: |
3998 | if (intro) | |
890ed176 | 3999 | SAVEGENERICSV(GvIOp(dstr)); |
91bba347 LW |
4000 | else |
4001 | dref = (SV*)GvIOp(dstr); | |
4002 | GvIOp(dstr) = (IO*)sref; | |
4003 | break; | |
f4d13ee9 JH |
4004 | case SVt_PVFM: |
4005 | if (intro) | |
890ed176 | 4006 | SAVEGENERICSV(GvFORM(dstr)); |
f4d13ee9 JH |
4007 | else |
4008 | dref = (SV*)GvFORM(dstr); | |
4009 | GvFORM(dstr) = (CV*)sref; | |
4010 | break; | |
8990e307 | 4011 | default: |
a0d0e21e | 4012 | if (intro) |
890ed176 | 4013 | SAVEGENERICSV(GvSV(dstr)); |
a0d0e21e LW |
4014 | else |
4015 | dref = (SV*)GvSV(dstr); | |
8990e307 | 4016 | GvSV(dstr) = sref; |
39bac7f7 | 4017 | if (!GvIMPORTED_SV(dstr) |
1d7c1841 GS |
4018 | && CopSTASH_ne(PL_curcop, GvSTASH(dstr))) |
4019 | { | |
a5f75d66 | 4020 | GvIMPORTED_SV_on(dstr); |
1d7c1841 | 4021 | } |
8990e307 LW |
4022 | break; |
4023 | } | |
4024 | if (dref) | |
4025 | SvREFCNT_dec(dref); | |
27c9684d AP |
4026 | if (SvTAINTED(sstr)) |
4027 | SvTAINT(dstr); | |
8990e307 LW |
4028 | return; |
4029 | } | |
3f7c398e | 4030 | if (SvPVX_const(dstr)) { |
8bd4d4c5 | 4031 | SvPV_free(dstr); |
b162af07 SP |
4032 | SvLEN_set(dstr, 0); |
4033 | SvCUR_set(dstr, 0); | |
a0d0e21e | 4034 | } |
8990e307 | 4035 | } |
a0d0e21e | 4036 | (void)SvOK_off(dstr); |
b162af07 | 4037 | SvRV_set(dstr, SvREFCNT_inc(SvRV(sstr))); |
ed6116ce | 4038 | SvROK_on(dstr); |
8990e307 | 4039 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4040 | SvNOKp_on(dstr); |
4041 | /* Only set the public OK flag if the source has public OK. */ | |
4042 | if (sflags & SVf_NOK) | |
4043 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 4044 | SvNV_set(dstr, SvNVX(sstr)); |
ed6116ce | 4045 | } |
8990e307 | 4046 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4047 | (void)SvIOKp_on(dstr); |
4048 | if (sflags & SVf_IOK) | |
4049 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4050 | if (sflags & SVf_IVisUV) |
25da4f38 | 4051 | SvIsUV_on(dstr); |
45977657 | 4052 | SvIV_set(dstr, SvIVX(sstr)); |
ed6116ce | 4053 | } |
a0d0e21e LW |
4054 | if (SvAMAGIC(sstr)) { |
4055 | SvAMAGIC_on(dstr); | |
4056 | } | |
ed6116ce | 4057 | } |
8990e307 | 4058 | else if (sflags & SVp_POK) { |
765f542d | 4059 | bool isSwipe = 0; |
79072805 LW |
4060 | |
4061 | /* | |
4062 | * Check to see if we can just swipe the string. If so, it's a | |
4063 | * possible small lose on short strings, but a big win on long ones. | |
3f7c398e SP |
4064 | * It might even be a win on short strings if SvPVX_const(dstr) |
4065 | * has to be allocated and SvPVX_const(sstr) has to be freed. | |
79072805 LW |
4066 | */ |
4067 | ||
120fac95 NC |
4068 | /* Whichever path we take through the next code, we want this true, |
4069 | and doing it now facilitates the COW check. */ | |
4070 | (void)SvPOK_only(dstr); | |
4071 | ||
765f542d | 4072 | if ( |
b8f9541a NC |
4073 | /* We're not already COW */ |
4074 | ((sflags & (SVf_FAKE | SVf_READONLY)) != (SVf_FAKE | SVf_READONLY) | |
f8c7b90f | 4075 | #ifndef PERL_OLD_COPY_ON_WRITE |
b8f9541a NC |
4076 | /* or we are, but dstr isn't a suitable target. */ |
4077 | || (SvFLAGS(dstr) & CAN_COW_MASK) != CAN_COW_FLAGS | |
4078 | #endif | |
4079 | ) | |
765f542d | 4080 | && |
765f542d NC |
4081 | !(isSwipe = |
4082 | (sflags & SVs_TEMP) && /* slated for free anyway? */ | |
4083 | !(sflags & SVf_OOK) && /* and not involved in OOK hack? */ | |
5fcdf167 NC |
4084 | (!(flags & SV_NOSTEAL)) && |
4085 | /* and we're allowed to steal temps */ | |
765f542d NC |
4086 | SvREFCNT(sstr) == 1 && /* and no other references to it? */ |
4087 | SvLEN(sstr) && /* and really is a string */ | |
645c22ef | 4088 | /* and won't be needed again, potentially */ |
765f542d | 4089 | !(PL_op && PL_op->op_type == OP_AASSIGN)) |
f8c7b90f | 4090 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 4091 | && !((sflags & CAN_COW_MASK) == CAN_COW_FLAGS |
120fac95 | 4092 | && (SvFLAGS(dstr) & CAN_COW_MASK) == CAN_COW_FLAGS |
765f542d NC |
4093 | && SvTYPE(sstr) >= SVt_PVIV) |
4094 | #endif | |
4095 | ) { | |
4096 | /* Failed the swipe test, and it's not a shared hash key either. | |
4097 | Have to copy the string. */ | |
4098 | STRLEN len = SvCUR(sstr); | |
4099 | SvGROW(dstr, len + 1); /* inlined from sv_setpvn */ | |
3f7c398e | 4100 | Move(SvPVX_const(sstr),SvPVX(dstr),len,char); |
765f542d NC |
4101 | SvCUR_set(dstr, len); |
4102 | *SvEND(dstr) = '\0'; | |
765f542d | 4103 | } else { |
f8c7b90f | 4104 | /* If PERL_OLD_COPY_ON_WRITE is not defined, then isSwipe will always |
765f542d | 4105 | be true in here. */ |
765f542d NC |
4106 | /* Either it's a shared hash key, or it's suitable for |
4107 | copy-on-write or we can swipe the string. */ | |
46187eeb | 4108 | if (DEBUG_C_TEST) { |
ed252734 | 4109 | PerlIO_printf(Perl_debug_log, "Copy on write: sstr --> dstr\n"); |
e419cbc5 NC |
4110 | sv_dump(sstr); |
4111 | sv_dump(dstr); | |
46187eeb | 4112 | } |
f8c7b90f | 4113 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4114 | if (!isSwipe) { |
4115 | /* I believe I should acquire a global SV mutex if | |
4116 | it's a COW sv (not a shared hash key) to stop | |
4117 | it going un copy-on-write. | |
4118 | If the source SV has gone un copy on write between up there | |
4119 | and down here, then (assert() that) it is of the correct | |
4120 | form to make it copy on write again */ | |
4121 | if ((sflags & (SVf_FAKE | SVf_READONLY)) | |
4122 | != (SVf_FAKE | SVf_READONLY)) { | |
4123 | SvREADONLY_on(sstr); | |
4124 | SvFAKE_on(sstr); | |
4125 | /* Make the source SV into a loop of 1. | |
4126 | (about to become 2) */ | |
a29f6d03 | 4127 | SV_COW_NEXT_SV_SET(sstr, sstr); |
765f542d NC |
4128 | } |
4129 | } | |
4130 | #endif | |
4131 | /* Initial code is common. */ | |
94010e71 NC |
4132 | if (SvPVX_const(dstr)) { /* we know that dtype >= SVt_PV */ |
4133 | SvPV_free(dstr); | |
79072805 | 4134 | } |
765f542d | 4135 | |
765f542d NC |
4136 | if (!isSwipe) { |
4137 | /* making another shared SV. */ | |
4138 | STRLEN cur = SvCUR(sstr); | |
4139 | STRLEN len = SvLEN(sstr); | |
f8c7b90f | 4140 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d | 4141 | if (len) { |
b8f9541a | 4142 | assert (SvTYPE(dstr) >= SVt_PVIV); |
765f542d NC |
4143 | /* SvIsCOW_normal */ |
4144 | /* splice us in between source and next-after-source. */ | |
a29f6d03 NC |
4145 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); |
4146 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 4147 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
a604c751 NC |
4148 | } else |
4149 | #endif | |
4150 | { | |
765f542d | 4151 | /* SvIsCOW_shared_hash */ |
46187eeb NC |
4152 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4153 | "Copy on write: Sharing hash\n")); | |
b8f9541a | 4154 | |
bdd68bc3 | 4155 | assert (SvTYPE(dstr) >= SVt_PV); |
765f542d | 4156 | SvPV_set(dstr, |
d1db91c6 | 4157 | HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr))))); |
bdd68bc3 | 4158 | } |
87a1ef3d SP |
4159 | SvLEN_set(dstr, len); |
4160 | SvCUR_set(dstr, cur); | |
765f542d NC |
4161 | SvREADONLY_on(dstr); |
4162 | SvFAKE_on(dstr); | |
4163 | /* Relesase a global SV mutex. */ | |
4164 | } | |
4165 | else | |
765f542d | 4166 | { /* Passes the swipe test. */ |
78d1e721 | 4167 | SvPV_set(dstr, SvPVX_mutable(sstr)); |
765f542d NC |
4168 | SvLEN_set(dstr, SvLEN(sstr)); |
4169 | SvCUR_set(dstr, SvCUR(sstr)); | |
4170 | ||
4171 | SvTEMP_off(dstr); | |
4172 | (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */ | |
4173 | SvPV_set(sstr, Nullch); | |
4174 | SvLEN_set(sstr, 0); | |
4175 | SvCUR_set(sstr, 0); | |
4176 | SvTEMP_off(sstr); | |
4177 | } | |
4178 | } | |
9aa983d2 | 4179 | if (sflags & SVf_UTF8) |
a7cb1f99 | 4180 | SvUTF8_on(dstr); |
8990e307 | 4181 | if (sflags & SVp_NOK) { |
3332b3c1 JH |
4182 | SvNOKp_on(dstr); |
4183 | if (sflags & SVf_NOK) | |
4184 | SvFLAGS(dstr) |= SVf_NOK; | |
9d6ce603 | 4185 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 | 4186 | } |
8990e307 | 4187 | if (sflags & SVp_IOK) { |
3332b3c1 JH |
4188 | (void)SvIOKp_on(dstr); |
4189 | if (sflags & SVf_IOK) | |
4190 | SvFLAGS(dstr) |= SVf_IOK; | |
2b1c7e3e | 4191 | if (sflags & SVf_IVisUV) |
25da4f38 | 4192 | SvIsUV_on(dstr); |
45977657 | 4193 | SvIV_set(dstr, SvIVX(sstr)); |
79072805 | 4194 | } |
92f0c265 | 4195 | if (SvVOK(sstr)) { |
7a5fa8a2 | 4196 | MAGIC *smg = mg_find(sstr,PERL_MAGIC_vstring); |
ece467f9 JP |
4197 | sv_magic(dstr, NULL, PERL_MAGIC_vstring, |
4198 | smg->mg_ptr, smg->mg_len); | |
439cb1c4 | 4199 | SvRMAGICAL_on(dstr); |
7a5fa8a2 | 4200 | } |
79072805 | 4201 | } |
8990e307 | 4202 | else if (sflags & SVp_IOK) { |
3332b3c1 JH |
4203 | if (sflags & SVf_IOK) |
4204 | (void)SvIOK_only(dstr); | |
4205 | else { | |
9cbac4c7 DM |
4206 | (void)SvOK_off(dstr); |
4207 | (void)SvIOKp_on(dstr); | |
3332b3c1 JH |
4208 | } |
4209 | /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */ | |
2b1c7e3e | 4210 | if (sflags & SVf_IVisUV) |
25da4f38 | 4211 | SvIsUV_on(dstr); |
45977657 | 4212 | SvIV_set(dstr, SvIVX(sstr)); |
3332b3c1 JH |
4213 | if (sflags & SVp_NOK) { |
4214 | if (sflags & SVf_NOK) | |
4215 | (void)SvNOK_on(dstr); | |
4216 | else | |
4217 | (void)SvNOKp_on(dstr); | |
9d6ce603 | 4218 | SvNV_set(dstr, SvNVX(sstr)); |
3332b3c1 JH |
4219 | } |
4220 | } | |
4221 | else if (sflags & SVp_NOK) { | |
4222 | if (sflags & SVf_NOK) | |
4223 | (void)SvNOK_only(dstr); | |
4224 | else { | |
9cbac4c7 | 4225 | (void)SvOK_off(dstr); |
3332b3c1 JH |
4226 | SvNOKp_on(dstr); |
4227 | } | |
9d6ce603 | 4228 | SvNV_set(dstr, SvNVX(sstr)); |
79072805 LW |
4229 | } |
4230 | else { | |
20408e3c | 4231 | if (dtype == SVt_PVGV) { |
e476b1b5 | 4232 | if (ckWARN(WARN_MISC)) |
9014280d | 4233 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Undefined value assigned to typeglob"); |
20408e3c GS |
4234 | } |
4235 | else | |
4236 | (void)SvOK_off(dstr); | |
a0d0e21e | 4237 | } |
27c9684d AP |
4238 | if (SvTAINTED(sstr)) |
4239 | SvTAINT(dstr); | |
79072805 LW |
4240 | } |
4241 | ||
954c1994 GS |
4242 | /* |
4243 | =for apidoc sv_setsv_mg | |
4244 | ||
4245 | Like C<sv_setsv>, but also handles 'set' magic. | |
4246 | ||
4247 | =cut | |
4248 | */ | |
4249 | ||
79072805 | 4250 | void |
864dbfa3 | 4251 | Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr) |
ef50df4b GS |
4252 | { |
4253 | sv_setsv(dstr,sstr); | |
4254 | SvSETMAGIC(dstr); | |
4255 | } | |
4256 | ||
f8c7b90f | 4257 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
4258 | SV * |
4259 | Perl_sv_setsv_cow(pTHX_ SV *dstr, SV *sstr) | |
4260 | { | |
4261 | STRLEN cur = SvCUR(sstr); | |
4262 | STRLEN len = SvLEN(sstr); | |
4263 | register char *new_pv; | |
4264 | ||
4265 | if (DEBUG_C_TEST) { | |
4266 | PerlIO_printf(Perl_debug_log, "Fast copy on write: %p -> %p\n", | |
4267 | sstr, dstr); | |
4268 | sv_dump(sstr); | |
4269 | if (dstr) | |
4270 | sv_dump(dstr); | |
4271 | } | |
4272 | ||
4273 | if (dstr) { | |
4274 | if (SvTHINKFIRST(dstr)) | |
4275 | sv_force_normal_flags(dstr, SV_COW_DROP_PV); | |
3f7c398e SP |
4276 | else if (SvPVX_const(dstr)) |
4277 | Safefree(SvPVX_const(dstr)); | |
ed252734 NC |
4278 | } |
4279 | else | |
4280 | new_SV(dstr); | |
862a34c6 | 4281 | SvUPGRADE(dstr, SVt_PVIV); |
ed252734 NC |
4282 | |
4283 | assert (SvPOK(sstr)); | |
4284 | assert (SvPOKp(sstr)); | |
4285 | assert (!SvIOK(sstr)); | |
4286 | assert (!SvIOKp(sstr)); | |
4287 | assert (!SvNOK(sstr)); | |
4288 | assert (!SvNOKp(sstr)); | |
4289 | ||
4290 | if (SvIsCOW(sstr)) { | |
4291 | ||
4292 | if (SvLEN(sstr) == 0) { | |
4293 | /* source is a COW shared hash key. */ | |
ed252734 NC |
4294 | DEBUG_C(PerlIO_printf(Perl_debug_log, |
4295 | "Fast copy on write: Sharing hash\n")); | |
d1db91c6 | 4296 | new_pv = HEK_KEY(share_hek_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)))); |
ed252734 NC |
4297 | goto common_exit; |
4298 | } | |
4299 | SV_COW_NEXT_SV_SET(dstr, SV_COW_NEXT_SV(sstr)); | |
4300 | } else { | |
4301 | assert ((SvFLAGS(sstr) & CAN_COW_MASK) == CAN_COW_FLAGS); | |
862a34c6 | 4302 | SvUPGRADE(sstr, SVt_PVIV); |
ed252734 NC |
4303 | SvREADONLY_on(sstr); |
4304 | SvFAKE_on(sstr); | |
4305 | DEBUG_C(PerlIO_printf(Perl_debug_log, | |
4306 | "Fast copy on write: Converting sstr to COW\n")); | |
4307 | SV_COW_NEXT_SV_SET(dstr, sstr); | |
4308 | } | |
4309 | SV_COW_NEXT_SV_SET(sstr, dstr); | |
940132f3 | 4310 | new_pv = SvPVX_mutable(sstr); |
ed252734 NC |
4311 | |
4312 | common_exit: | |
4313 | SvPV_set(dstr, new_pv); | |
4314 | SvFLAGS(dstr) = (SVt_PVIV|SVf_POK|SVp_POK|SVf_FAKE|SVf_READONLY); | |
4315 | if (SvUTF8(sstr)) | |
4316 | SvUTF8_on(dstr); | |
87a1ef3d SP |
4317 | SvLEN_set(dstr, len); |
4318 | SvCUR_set(dstr, cur); | |
ed252734 NC |
4319 | if (DEBUG_C_TEST) { |
4320 | sv_dump(dstr); | |
4321 | } | |
4322 | return dstr; | |
4323 | } | |
4324 | #endif | |
4325 | ||
954c1994 GS |
4326 | /* |
4327 | =for apidoc sv_setpvn | |
4328 | ||
4329 | Copies a string into an SV. The C<len> parameter indicates the number of | |
9e09f5f2 MHM |
4330 | bytes to be copied. If the C<ptr> argument is NULL the SV will become |
4331 | undefined. Does not handle 'set' magic. See C<sv_setpvn_mg>. | |
954c1994 GS |
4332 | |
4333 | =cut | |
4334 | */ | |
4335 | ||
ef50df4b | 4336 | void |
864dbfa3 | 4337 | Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
79072805 | 4338 | { |
c6f8c383 | 4339 | register char *dptr; |
22c522df | 4340 | |
765f542d | 4341 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4342 | if (!ptr) { |
a0d0e21e | 4343 | (void)SvOK_off(sv); |
463ee0b2 LW |
4344 | return; |
4345 | } | |
22c522df JH |
4346 | else { |
4347 | /* len is STRLEN which is unsigned, need to copy to signed */ | |
a3b680e6 | 4348 | const IV iv = len; |
9c5ffd7c JH |
4349 | if (iv < 0) |
4350 | Perl_croak(aTHX_ "panic: sv_setpvn called with negative strlen"); | |
22c522df | 4351 | } |
862a34c6 | 4352 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4353 | |
5902b6a9 | 4354 | dptr = SvGROW(sv, len + 1); |
c6f8c383 GA |
4355 | Move(ptr,dptr,len,char); |
4356 | dptr[len] = '\0'; | |
79072805 | 4357 | SvCUR_set(sv, len); |
1aa99e6b | 4358 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4359 | SvTAINT(sv); |
79072805 LW |
4360 | } |
4361 | ||
954c1994 GS |
4362 | /* |
4363 | =for apidoc sv_setpvn_mg | |
4364 | ||
4365 | Like C<sv_setpvn>, but also handles 'set' magic. | |
4366 | ||
4367 | =cut | |
4368 | */ | |
4369 | ||
79072805 | 4370 | void |
864dbfa3 | 4371 | Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4372 | { |
4373 | sv_setpvn(sv,ptr,len); | |
4374 | SvSETMAGIC(sv); | |
4375 | } | |
4376 | ||
954c1994 GS |
4377 | /* |
4378 | =for apidoc sv_setpv | |
4379 | ||
4380 | Copies a string into an SV. The string must be null-terminated. Does not | |
4381 | handle 'set' magic. See C<sv_setpv_mg>. | |
4382 | ||
4383 | =cut | |
4384 | */ | |
4385 | ||
ef50df4b | 4386 | void |
864dbfa3 | 4387 | Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4388 | { |
4389 | register STRLEN len; | |
4390 | ||
765f542d | 4391 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
463ee0b2 | 4392 | if (!ptr) { |
a0d0e21e | 4393 | (void)SvOK_off(sv); |
463ee0b2 LW |
4394 | return; |
4395 | } | |
79072805 | 4396 | len = strlen(ptr); |
862a34c6 | 4397 | SvUPGRADE(sv, SVt_PV); |
c6f8c383 | 4398 | |
79072805 | 4399 | SvGROW(sv, len + 1); |
463ee0b2 | 4400 | Move(ptr,SvPVX(sv),len+1,char); |
79072805 | 4401 | SvCUR_set(sv, len); |
1aa99e6b | 4402 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 LW |
4403 | SvTAINT(sv); |
4404 | } | |
4405 | ||
954c1994 GS |
4406 | /* |
4407 | =for apidoc sv_setpv_mg | |
4408 | ||
4409 | Like C<sv_setpv>, but also handles 'set' magic. | |
4410 | ||
4411 | =cut | |
4412 | */ | |
4413 | ||
463ee0b2 | 4414 | void |
864dbfa3 | 4415 | Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b GS |
4416 | { |
4417 | sv_setpv(sv,ptr); | |
4418 | SvSETMAGIC(sv); | |
4419 | } | |
4420 | ||
954c1994 GS |
4421 | /* |
4422 | =for apidoc sv_usepvn | |
4423 | ||
4424 | Tells an SV to use C<ptr> to find its string value. Normally the string is | |
1c846c1f | 4425 | stored inside the SV but sv_usepvn allows the SV to use an outside string. |
954c1994 GS |
4426 | The C<ptr> should point to memory that was allocated by C<malloc>. The |
4427 | string length, C<len>, must be supplied. This function will realloc the | |
4428 | memory pointed to by C<ptr>, so that pointer should not be freed or used by | |
4429 | the programmer after giving it to sv_usepvn. Does not handle 'set' magic. | |
4430 | See C<sv_usepvn_mg>. | |
4431 | ||
4432 | =cut | |
4433 | */ | |
4434 | ||
ef50df4b | 4435 | void |
864dbfa3 | 4436 | Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
463ee0b2 | 4437 | { |
1936d2a7 | 4438 | STRLEN allocate; |
765f542d | 4439 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
862a34c6 | 4440 | SvUPGRADE(sv, SVt_PV); |
463ee0b2 | 4441 | if (!ptr) { |
a0d0e21e | 4442 | (void)SvOK_off(sv); |
463ee0b2 LW |
4443 | return; |
4444 | } | |
3f7c398e | 4445 | if (SvPVX_const(sv)) |
8bd4d4c5 | 4446 | SvPV_free(sv); |
1936d2a7 NC |
4447 | |
4448 | allocate = PERL_STRLEN_ROUNDUP(len + 1); | |
7a9b70e9 | 4449 | ptr = saferealloc (ptr, allocate); |
f880fe2f | 4450 | SvPV_set(sv, ptr); |
463ee0b2 | 4451 | SvCUR_set(sv, len); |
1936d2a7 | 4452 | SvLEN_set(sv, allocate); |
463ee0b2 | 4453 | *SvEND(sv) = '\0'; |
1aa99e6b | 4454 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4455 | SvTAINT(sv); |
79072805 LW |
4456 | } |
4457 | ||
954c1994 GS |
4458 | /* |
4459 | =for apidoc sv_usepvn_mg | |
4460 | ||
4461 | Like C<sv_usepvn>, but also handles 'set' magic. | |
4462 | ||
4463 | =cut | |
4464 | */ | |
4465 | ||
ef50df4b | 4466 | void |
864dbfa3 | 4467 | Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len) |
ef50df4b | 4468 | { |
51c1089b | 4469 | sv_usepvn(sv,ptr,len); |
ef50df4b GS |
4470 | SvSETMAGIC(sv); |
4471 | } | |
4472 | ||
f8c7b90f | 4473 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4474 | /* Need to do this *after* making the SV normal, as we need the buffer |
4475 | pointer to remain valid until after we've copied it. If we let go too early, | |
4476 | another thread could invalidate it by unsharing last of the same hash key | |
4477 | (which it can do by means other than releasing copy-on-write Svs) | |
4478 | or by changing the other copy-on-write SVs in the loop. */ | |
4479 | STATIC void | |
bdd68bc3 | 4480 | S_sv_release_COW(pTHX_ register SV *sv, const char *pvx, STRLEN len, SV *after) |
765f542d NC |
4481 | { |
4482 | if (len) { /* this SV was SvIsCOW_normal(sv) */ | |
4483 | /* we need to find the SV pointing to us. */ | |
4484 | SV *current = SV_COW_NEXT_SV(after); | |
7a5fa8a2 | 4485 | |
765f542d NC |
4486 | if (current == sv) { |
4487 | /* The SV we point to points back to us (there were only two of us | |
4488 | in the loop.) | |
4489 | Hence other SV is no longer copy on write either. */ | |
4490 | SvFAKE_off(after); | |
4491 | SvREADONLY_off(after); | |
4492 | } else { | |
4493 | /* We need to follow the pointers around the loop. */ | |
4494 | SV *next; | |
4495 | while ((next = SV_COW_NEXT_SV(current)) != sv) { | |
4496 | assert (next); | |
4497 | current = next; | |
4498 | /* don't loop forever if the structure is bust, and we have | |
4499 | a pointer into a closed loop. */ | |
4500 | assert (current != after); | |
3f7c398e | 4501 | assert (SvPVX_const(current) == pvx); |
765f542d NC |
4502 | } |
4503 | /* Make the SV before us point to the SV after us. */ | |
a29f6d03 | 4504 | SV_COW_NEXT_SV_SET(current, after); |
765f542d NC |
4505 | } |
4506 | } else { | |
bdd68bc3 | 4507 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); |
765f542d NC |
4508 | } |
4509 | } | |
4510 | ||
4511 | int | |
4512 | Perl_sv_release_IVX(pTHX_ register SV *sv) | |
4513 | { | |
4514 | if (SvIsCOW(sv)) | |
4515 | sv_force_normal_flags(sv, 0); | |
0c34ef67 MHM |
4516 | SvOOK_off(sv); |
4517 | return 0; | |
765f542d NC |
4518 | } |
4519 | #endif | |
645c22ef DM |
4520 | /* |
4521 | =for apidoc sv_force_normal_flags | |
4522 | ||
4523 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4524 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
765f542d NC |
4525 | an xpvmg; if we're a copy-on-write scalar, this is the on-write time when |
4526 | we do the copy, and is also used locally. If C<SV_COW_DROP_PV> is set | |
4527 | then a copy-on-write scalar drops its PV buffer (if any) and becomes | |
4528 | SvPOK_off rather than making a copy. (Used where this scalar is about to be | |
d3050d9d | 4529 | set to some other value.) In addition, the C<flags> parameter gets passed to |
765f542d NC |
4530 | C<sv_unref_flags()> when unrefing. C<sv_force_normal> calls this function |
4531 | with flags set to 0. | |
645c22ef DM |
4532 | |
4533 | =cut | |
4534 | */ | |
4535 | ||
6fc92669 | 4536 | void |
840a7b70 | 4537 | Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags) |
0f15f207 | 4538 | { |
f8c7b90f | 4539 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4540 | if (SvREADONLY(sv)) { |
4541 | /* At this point I believe I should acquire a global SV mutex. */ | |
4542 | if (SvFAKE(sv)) { | |
a28509cc AL |
4543 | const char *pvx = SvPVX_const(sv); |
4544 | const STRLEN len = SvLEN(sv); | |
4545 | const STRLEN cur = SvCUR(sv); | |
a28509cc | 4546 | SV * const next = SV_COW_NEXT_SV(sv); /* next COW sv in the loop. */ |
46187eeb NC |
4547 | if (DEBUG_C_TEST) { |
4548 | PerlIO_printf(Perl_debug_log, | |
4549 | "Copy on write: Force normal %ld\n", | |
4550 | (long) flags); | |
e419cbc5 | 4551 | sv_dump(sv); |
46187eeb | 4552 | } |
765f542d NC |
4553 | SvFAKE_off(sv); |
4554 | SvREADONLY_off(sv); | |
4555 | /* This SV doesn't own the buffer, so need to New() a new one: */ | |
f880fe2f | 4556 | SvPV_set(sv, (char*)0); |
87a1ef3d | 4557 | SvLEN_set(sv, 0); |
765f542d NC |
4558 | if (flags & SV_COW_DROP_PV) { |
4559 | /* OK, so we don't need to copy our buffer. */ | |
4560 | SvPOK_off(sv); | |
4561 | } else { | |
4562 | SvGROW(sv, cur + 1); | |
4563 | Move(pvx,SvPVX(sv),cur,char); | |
87a1ef3d | 4564 | SvCUR_set(sv, cur); |
765f542d NC |
4565 | *SvEND(sv) = '\0'; |
4566 | } | |
bdd68bc3 | 4567 | sv_release_COW(sv, pvx, len, next); |
46187eeb | 4568 | if (DEBUG_C_TEST) { |
e419cbc5 | 4569 | sv_dump(sv); |
46187eeb | 4570 | } |
765f542d | 4571 | } |
923e4eb5 | 4572 | else if (IN_PERL_RUNTIME) |
765f542d NC |
4573 | Perl_croak(aTHX_ PL_no_modify); |
4574 | /* At this point I believe that I can drop the global SV mutex. */ | |
4575 | } | |
4576 | #else | |
2213622d | 4577 | if (SvREADONLY(sv)) { |
1c846c1f | 4578 | if (SvFAKE(sv)) { |
a433f3d2 | 4579 | const char *pvx = SvPVX_const(sv); |
66a1b24b | 4580 | const STRLEN len = SvCUR(sv); |
10bcdfd6 NC |
4581 | SvFAKE_off(sv); |
4582 | SvREADONLY_off(sv); | |
66a1b24b AL |
4583 | SvPV_set(sv, Nullch); |
4584 | SvLEN_set(sv, 0); | |
1c846c1f | 4585 | SvGROW(sv, len + 1); |
3f7c398e | 4586 | Move(pvx,SvPVX_const(sv),len,char); |
1c846c1f | 4587 | *SvEND(sv) = '\0'; |
bdd68bc3 | 4588 | unshare_hek(SvSHARED_HEK_FROM_PV(pvx)); |
1c846c1f | 4589 | } |
923e4eb5 | 4590 | else if (IN_PERL_RUNTIME) |
cea2e8a9 | 4591 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 4592 | } |
765f542d | 4593 | #endif |
2213622d | 4594 | if (SvROK(sv)) |
840a7b70 | 4595 | sv_unref_flags(sv, flags); |
6fc92669 GS |
4596 | else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) |
4597 | sv_unglob(sv); | |
0f15f207 | 4598 | } |
1c846c1f | 4599 | |
645c22ef DM |
4600 | /* |
4601 | =for apidoc sv_force_normal | |
4602 | ||
4603 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
4604 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
4605 | an xpvmg. See also C<sv_force_normal_flags>. | |
4606 | ||
4607 | =cut | |
4608 | */ | |
4609 | ||
840a7b70 IZ |
4610 | void |
4611 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
4612 | { | |
4613 | sv_force_normal_flags(sv, 0); | |
4614 | } | |
4615 | ||
954c1994 GS |
4616 | /* |
4617 | =for apidoc sv_chop | |
4618 | ||
1c846c1f | 4619 | Efficient removal of characters from the beginning of the string buffer. |
954c1994 GS |
4620 | SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside |
4621 | the string buffer. The C<ptr> becomes the first character of the adjusted | |
645c22ef | 4622 | string. Uses the "OOK hack". |
3f7c398e | 4623 | Beware: after this function returns, C<ptr> and SvPVX_const(sv) may no longer |
31869a79 | 4624 | refer to the same chunk of data. |
954c1994 GS |
4625 | |
4626 | =cut | |
4627 | */ | |
4628 | ||
79072805 | 4629 | void |
f54cb97a | 4630 | Perl_sv_chop(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4631 | { |
4632 | register STRLEN delta; | |
a0d0e21e | 4633 | if (!ptr || !SvPOKp(sv)) |
79072805 | 4634 | return; |
3f7c398e | 4635 | delta = ptr - SvPVX_const(sv); |
2213622d | 4636 | SV_CHECK_THINKFIRST(sv); |
79072805 LW |
4637 | if (SvTYPE(sv) < SVt_PVIV) |
4638 | sv_upgrade(sv,SVt_PVIV); | |
4639 | ||
4640 | if (!SvOOK(sv)) { | |
50483b2c | 4641 | if (!SvLEN(sv)) { /* make copy of shared string */ |
3f7c398e | 4642 | const char *pvx = SvPVX_const(sv); |
a28509cc | 4643 | const STRLEN len = SvCUR(sv); |
50483b2c | 4644 | SvGROW(sv, len + 1); |
3f7c398e | 4645 | Move(pvx,SvPVX_const(sv),len,char); |
50483b2c JD |
4646 | *SvEND(sv) = '\0'; |
4647 | } | |
45977657 | 4648 | SvIV_set(sv, 0); |
a4bfb290 AB |
4649 | /* Same SvOOK_on but SvOOK_on does a SvIOK_off |
4650 | and we do that anyway inside the SvNIOK_off | |
4651 | */ | |
7a5fa8a2 | 4652 | SvFLAGS(sv) |= SVf_OOK; |
79072805 | 4653 | } |
a4bfb290 | 4654 | SvNIOK_off(sv); |
b162af07 SP |
4655 | SvLEN_set(sv, SvLEN(sv) - delta); |
4656 | SvCUR_set(sv, SvCUR(sv) - delta); | |
f880fe2f | 4657 | SvPV_set(sv, SvPVX(sv) + delta); |
45977657 | 4658 | SvIV_set(sv, SvIVX(sv) + delta); |
79072805 LW |
4659 | } |
4660 | ||
09540bc3 JH |
4661 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); |
4662 | * this function provided for binary compatibility only | |
4663 | */ | |
4664 | ||
4665 | void | |
4666 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
4667 | { | |
4668 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
4669 | } | |
4670 | ||
954c1994 GS |
4671 | /* |
4672 | =for apidoc sv_catpvn | |
4673 | ||
4674 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
4675 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
4676 | status set, then the bytes appended should be valid UTF-8. | |
d5ce4a7c | 4677 | Handles 'get' magic, but not 'set' magic. See C<sv_catpvn_mg>. |
954c1994 | 4678 | |
8d6d96c1 HS |
4679 | =for apidoc sv_catpvn_flags |
4680 | ||
4681 | Concatenates the string onto the end of the string which is in the SV. The | |
1e54db1a JH |
4682 | C<len> indicates number of bytes to copy. If the SV has the UTF-8 |
4683 | status set, then the bytes appended should be valid UTF-8. | |
8d6d96c1 HS |
4684 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<dsv> if |
4685 | appropriate, else not. C<sv_catpvn> and C<sv_catpvn_nomg> are implemented | |
4686 | in terms of this function. | |
4687 | ||
4688 | =cut | |
4689 | */ | |
4690 | ||
4691 | void | |
4692 | Perl_sv_catpvn_flags(pTHX_ register SV *dsv, register const char *sstr, register STRLEN slen, I32 flags) | |
4693 | { | |
4694 | STRLEN dlen; | |
f54cb97a | 4695 | const char *dstr = SvPV_force_flags(dsv, dlen, flags); |
8d6d96c1 | 4696 | |
8d6d96c1 HS |
4697 | SvGROW(dsv, dlen + slen + 1); |
4698 | if (sstr == dstr) | |
3f7c398e | 4699 | sstr = SvPVX_const(dsv); |
8d6d96c1 | 4700 | Move(sstr, SvPVX(dsv) + dlen, slen, char); |
b162af07 | 4701 | SvCUR_set(dsv, SvCUR(dsv) + slen); |
8d6d96c1 HS |
4702 | *SvEND(dsv) = '\0'; |
4703 | (void)SvPOK_only_UTF8(dsv); /* validate pointer */ | |
4704 | SvTAINT(dsv); | |
79072805 LW |
4705 | } |
4706 | ||
954c1994 GS |
4707 | /* |
4708 | =for apidoc sv_catpvn_mg | |
4709 | ||
4710 | Like C<sv_catpvn>, but also handles 'set' magic. | |
4711 | ||
4712 | =cut | |
4713 | */ | |
4714 | ||
79072805 | 4715 | void |
864dbfa3 | 4716 | Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len) |
ef50df4b GS |
4717 | { |
4718 | sv_catpvn(sv,ptr,len); | |
4719 | SvSETMAGIC(sv); | |
4720 | } | |
4721 | ||
09540bc3 JH |
4722 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); |
4723 | * this function provided for binary compatibility only | |
4724 | */ | |
4725 | ||
4726 | void | |
4727 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
4728 | { | |
4729 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
4730 | } | |
4731 | ||
954c1994 GS |
4732 | /* |
4733 | =for apidoc sv_catsv | |
4734 | ||
13e8c8e3 JH |
4735 | Concatenates the string from SV C<ssv> onto the end of the string in |
4736 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but | |
4737 | not 'set' magic. See C<sv_catsv_mg>. | |
954c1994 | 4738 | |
8d6d96c1 HS |
4739 | =for apidoc sv_catsv_flags |
4740 | ||
4741 | Concatenates the string from SV C<ssv> onto the end of the string in | |
4742 | SV C<dsv>. Modifies C<dsv> but not C<ssv>. If C<flags> has C<SV_GMAGIC> | |
4743 | bit set, will C<mg_get> on the SVs if appropriate, else not. C<sv_catsv> | |
4744 | and C<sv_catsv_nomg> are implemented in terms of this function. | |
4745 | ||
4746 | =cut */ | |
4747 | ||
ef50df4b | 4748 | void |
8d6d96c1 | 4749 | Perl_sv_catsv_flags(pTHX_ SV *dsv, register SV *ssv, I32 flags) |
79072805 | 4750 | { |
4d84ee25 | 4751 | const char *spv; |
13e8c8e3 | 4752 | STRLEN slen; |
46199a12 | 4753 | if (!ssv) |
79072805 | 4754 | return; |
4d84ee25 | 4755 | if ((spv = SvPV_const(ssv, slen))) { |
4fd84b44 AD |
4756 | /* sutf8 and dutf8 were type bool, but under USE_ITHREADS, |
4757 | gcc version 2.95.2 20000220 (Debian GNU/Linux) for | |
8cf8f3d1 NIS |
4758 | Linux xxx 2.2.17 on sparc64 with gcc -O2, we erroneously |
4759 | get dutf8 = 0x20000000, (i.e. SVf_UTF8) even though | |
4fd84b44 AD |
4760 | dsv->sv_flags doesn't have that bit set. |
4761 | Andy Dougherty 12 Oct 2001 | |
4762 | */ | |
b464bac0 | 4763 | const I32 sutf8 = DO_UTF8(ssv); |
4fd84b44 | 4764 | I32 dutf8; |
13e8c8e3 | 4765 | |
8d6d96c1 HS |
4766 | if (SvGMAGICAL(dsv) && (flags & SV_GMAGIC)) |
4767 | mg_get(dsv); | |
4768 | dutf8 = DO_UTF8(dsv); | |
4769 | ||
4770 | if (dutf8 != sutf8) { | |
13e8c8e3 | 4771 | if (dutf8) { |
46199a12 | 4772 | /* Not modifying source SV, so taking a temporary copy. */ |
8d6d96c1 | 4773 | SV* csv = sv_2mortal(newSVpvn(spv, slen)); |
13e8c8e3 | 4774 | |
46199a12 | 4775 | sv_utf8_upgrade(csv); |
93524f2b | 4776 | spv = SvPV_const(csv, slen); |
13e8c8e3 | 4777 | } |
8d6d96c1 HS |
4778 | else |
4779 | sv_utf8_upgrade_nomg(dsv); | |
e84ff256 | 4780 | } |
8d6d96c1 | 4781 | sv_catpvn_nomg(dsv, spv, slen); |
560a288e | 4782 | } |
79072805 LW |
4783 | } |
4784 | ||
954c1994 GS |
4785 | /* |
4786 | =for apidoc sv_catsv_mg | |
4787 | ||
4788 | Like C<sv_catsv>, but also handles 'set' magic. | |
4789 | ||
4790 | =cut | |
4791 | */ | |
4792 | ||
79072805 | 4793 | void |
46199a12 | 4794 | Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv) |
ef50df4b | 4795 | { |
46199a12 JH |
4796 | sv_catsv(dsv,ssv); |
4797 | SvSETMAGIC(dsv); | |
ef50df4b GS |
4798 | } |
4799 | ||
954c1994 GS |
4800 | /* |
4801 | =for apidoc sv_catpv | |
4802 | ||
4803 | Concatenates the string onto the end of the string which is in the SV. | |
1e54db1a JH |
4804 | If the SV has the UTF-8 status set, then the bytes appended should be |
4805 | valid UTF-8. Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>. | |
954c1994 | 4806 | |
d5ce4a7c | 4807 | =cut */ |
954c1994 | 4808 | |
ef50df4b | 4809 | void |
0c981600 | 4810 | Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr) |
79072805 LW |
4811 | { |
4812 | register STRLEN len; | |
463ee0b2 | 4813 | STRLEN tlen; |
748a9306 | 4814 | char *junk; |
79072805 | 4815 | |
0c981600 | 4816 | if (!ptr) |
79072805 | 4817 | return; |
748a9306 | 4818 | junk = SvPV_force(sv, tlen); |
0c981600 | 4819 | len = strlen(ptr); |
463ee0b2 | 4820 | SvGROW(sv, tlen + len + 1); |
0c981600 | 4821 | if (ptr == junk) |
3f7c398e | 4822 | ptr = SvPVX_const(sv); |
0c981600 | 4823 | Move(ptr,SvPVX(sv)+tlen,len+1,char); |
b162af07 | 4824 | SvCUR_set(sv, SvCUR(sv) + len); |
d41ff1b8 | 4825 | (void)SvPOK_only_UTF8(sv); /* validate pointer */ |
463ee0b2 | 4826 | SvTAINT(sv); |
79072805 LW |
4827 | } |
4828 | ||
954c1994 GS |
4829 | /* |
4830 | =for apidoc sv_catpv_mg | |
4831 | ||
4832 | Like C<sv_catpv>, but also handles 'set' magic. | |
4833 | ||
4834 | =cut | |
4835 | */ | |
4836 | ||
ef50df4b | 4837 | void |
0c981600 | 4838 | Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr) |
ef50df4b | 4839 | { |
0c981600 | 4840 | sv_catpv(sv,ptr); |
ef50df4b GS |
4841 | SvSETMAGIC(sv); |
4842 | } | |
4843 | ||
645c22ef DM |
4844 | /* |
4845 | =for apidoc newSV | |
4846 | ||
4847 | Create a new null SV, or if len > 0, create a new empty SVt_PV type SV | |
4848 | with an initial PV allocation of len+1. Normally accessed via the C<NEWSV> | |
4849 | macro. | |
4850 | ||
4851 | =cut | |
4852 | */ | |
4853 | ||
79072805 | 4854 | SV * |
864dbfa3 | 4855 | Perl_newSV(pTHX_ STRLEN len) |
79072805 LW |
4856 | { |
4857 | register SV *sv; | |
1c846c1f | 4858 | |
4561caa4 | 4859 | new_SV(sv); |
79072805 LW |
4860 | if (len) { |
4861 | sv_upgrade(sv, SVt_PV); | |
4862 | SvGROW(sv, len + 1); | |
4863 | } | |
4864 | return sv; | |
4865 | } | |
954c1994 | 4866 | /* |
92110913 | 4867 | =for apidoc sv_magicext |
954c1994 | 4868 | |
68795e93 | 4869 | Adds magic to an SV, upgrading it if necessary. Applies the |
2d8d5d5a | 4870 | supplied vtable and returns a pointer to the magic added. |
92110913 | 4871 | |
2d8d5d5a SH |
4872 | Note that C<sv_magicext> will allow things that C<sv_magic> will not. |
4873 | In particular, you can add magic to SvREADONLY SVs, and add more than | |
4874 | one instance of the same 'how'. | |
645c22ef | 4875 | |
2d8d5d5a SH |
4876 | If C<namlen> is greater than zero then a C<savepvn> I<copy> of C<name> is |
4877 | stored, if C<namlen> is zero then C<name> is stored as-is and - as another | |
4878 | special case - if C<(name && namlen == HEf_SVKEY)> then C<name> is assumed | |
4879 | to contain an C<SV*> and is stored as-is with its REFCNT incremented. | |
92110913 | 4880 | |
2d8d5d5a | 4881 | (This is now used as a subroutine by C<sv_magic>.) |
954c1994 GS |
4882 | |
4883 | =cut | |
4884 | */ | |
92110913 | 4885 | MAGIC * |
e1ec3a88 | 4886 | Perl_sv_magicext(pTHX_ SV* sv, SV* obj, int how, const MGVTBL *vtable, |
92110913 | 4887 | const char* name, I32 namlen) |
79072805 LW |
4888 | { |
4889 | MAGIC* mg; | |
68795e93 | 4890 | |
92110913 | 4891 | if (SvTYPE(sv) < SVt_PVMG) { |
862a34c6 | 4892 | SvUPGRADE(sv, SVt_PVMG); |
463ee0b2 | 4893 | } |
79072805 LW |
4894 | Newz(702,mg, 1, MAGIC); |
4895 | mg->mg_moremagic = SvMAGIC(sv); | |
b162af07 | 4896 | SvMAGIC_set(sv, mg); |
75f9d97a | 4897 | |
05f95b08 SB |
4898 | /* Sometimes a magic contains a reference loop, where the sv and |
4899 | object refer to each other. To prevent a reference loop that | |
4900 | would prevent such objects being freed, we look for such loops | |
4901 | and if we find one we avoid incrementing the object refcount. | |
87f0b213 JH |
4902 | |
4903 | Note we cannot do this to avoid self-tie loops as intervening RV must | |
b5ccf5f2 | 4904 | have its REFCNT incremented to keep it in existence. |
87f0b213 JH |
4905 | |
4906 | */ | |
14befaf4 DM |
4907 | if (!obj || obj == sv || |
4908 | how == PERL_MAGIC_arylen || | |
4909 | how == PERL_MAGIC_qr || | |
8d2f4536 | 4910 | how == PERL_MAGIC_symtab || |
75f9d97a JH |
4911 | (SvTYPE(obj) == SVt_PVGV && |
4912 | (GvSV(obj) == sv || GvHV(obj) == (HV*)sv || GvAV(obj) == (AV*)sv || | |
4913 | GvCV(obj) == (CV*)sv || GvIOp(obj) == (IO*)sv || | |
2628be26 | 4914 | GvFORM(obj) == (CV*)sv))) |
75f9d97a | 4915 | { |
8990e307 | 4916 | mg->mg_obj = obj; |
75f9d97a | 4917 | } |
85e6fe83 | 4918 | else { |
8990e307 | 4919 | mg->mg_obj = SvREFCNT_inc(obj); |
85e6fe83 LW |
4920 | mg->mg_flags |= MGf_REFCOUNTED; |
4921 | } | |
b5ccf5f2 YST |
4922 | |
4923 | /* Normal self-ties simply pass a null object, and instead of | |
4924 | using mg_obj directly, use the SvTIED_obj macro to produce a | |
4925 | new RV as needed. For glob "self-ties", we are tieing the PVIO | |
4926 | with an RV obj pointing to the glob containing the PVIO. In | |
4927 | this case, to avoid a reference loop, we need to weaken the | |
4928 | reference. | |
4929 | */ | |
4930 | ||
4931 | if (how == PERL_MAGIC_tiedscalar && SvTYPE(sv) == SVt_PVIO && | |
4932 | obj && SvROK(obj) && GvIO(SvRV(obj)) == (IO*)sv) | |
4933 | { | |
4934 | sv_rvweaken(obj); | |
4935 | } | |
4936 | ||
79072805 | 4937 | mg->mg_type = how; |
565764a8 | 4938 | mg->mg_len = namlen; |
9cbac4c7 | 4939 | if (name) { |
92110913 | 4940 | if (namlen > 0) |
1edc1566 | 4941 | mg->mg_ptr = savepvn(name, namlen); |
c6ee37c5 | 4942 | else if (namlen == HEf_SVKEY) |
1edc1566 | 4943 | mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name); |
68795e93 | 4944 | else |
92110913 | 4945 | mg->mg_ptr = (char *) name; |
9cbac4c7 | 4946 | } |
92110913 | 4947 | mg->mg_virtual = vtable; |
68795e93 | 4948 | |
92110913 NIS |
4949 | mg_magical(sv); |
4950 | if (SvGMAGICAL(sv)) | |
4951 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
4952 | return mg; | |
4953 | } | |
4954 | ||
4955 | /* | |
4956 | =for apidoc sv_magic | |
1c846c1f | 4957 | |
92110913 NIS |
4958 | Adds magic to an SV. First upgrades C<sv> to type C<SVt_PVMG> if necessary, |
4959 | then adds a new magic item of type C<how> to the head of the magic list. | |
4960 | ||
2d8d5d5a SH |
4961 | See C<sv_magicext> (which C<sv_magic> now calls) for a description of the |
4962 | handling of the C<name> and C<namlen> arguments. | |
4963 | ||
4509d3fb SB |
4964 | You need to use C<sv_magicext> to add magic to SvREADONLY SVs and also |
4965 | to add more than one instance of the same 'how'. | |
4966 | ||
92110913 NIS |
4967 | =cut |
4968 | */ | |
4969 | ||
4970 | void | |
4971 | Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen) | |
68795e93 | 4972 | { |
e1ec3a88 | 4973 | const MGVTBL *vtable = 0; |
92110913 | 4974 | MAGIC* mg; |
92110913 | 4975 | |
f8c7b90f | 4976 | #ifdef PERL_OLD_COPY_ON_WRITE |
765f542d NC |
4977 | if (SvIsCOW(sv)) |
4978 | sv_force_normal_flags(sv, 0); | |
4979 | #endif | |
92110913 | 4980 | if (SvREADONLY(sv)) { |
923e4eb5 | 4981 | if (IN_PERL_RUNTIME |
92110913 NIS |
4982 | && how != PERL_MAGIC_regex_global |
4983 | && how != PERL_MAGIC_bm | |
4984 | && how != PERL_MAGIC_fm | |
4985 | && how != PERL_MAGIC_sv | |
e6469971 | 4986 | && how != PERL_MAGIC_backref |
92110913 NIS |
4987 | ) |
4988 | { | |
4989 | Perl_croak(aTHX_ PL_no_modify); | |
4990 | } | |
4991 | } | |
4992 | if (SvMAGICAL(sv) || (how == PERL_MAGIC_taint && SvTYPE(sv) >= SVt_PVMG)) { | |
4993 | if (SvMAGIC(sv) && (mg = mg_find(sv, how))) { | |
68795e93 NIS |
4994 | /* sv_magic() refuses to add a magic of the same 'how' as an |
4995 | existing one | |
92110913 NIS |
4996 | */ |
4997 | if (how == PERL_MAGIC_taint) | |
4998 | mg->mg_len |= 1; | |
4999 | return; | |
5000 | } | |
5001 | } | |
68795e93 | 5002 | |
79072805 | 5003 | switch (how) { |
14befaf4 | 5004 | case PERL_MAGIC_sv: |
92110913 | 5005 | vtable = &PL_vtbl_sv; |
79072805 | 5006 | break; |
14befaf4 | 5007 | case PERL_MAGIC_overload: |
92110913 | 5008 | vtable = &PL_vtbl_amagic; |
a0d0e21e | 5009 | break; |
14befaf4 | 5010 | case PERL_MAGIC_overload_elem: |
92110913 | 5011 | vtable = &PL_vtbl_amagicelem; |
a0d0e21e | 5012 | break; |
14befaf4 | 5013 | case PERL_MAGIC_overload_table: |
92110913 | 5014 | vtable = &PL_vtbl_ovrld; |
a0d0e21e | 5015 | break; |
14befaf4 | 5016 | case PERL_MAGIC_bm: |
92110913 | 5017 | vtable = &PL_vtbl_bm; |
79072805 | 5018 | break; |
14befaf4 | 5019 | case PERL_MAGIC_regdata: |
92110913 | 5020 | vtable = &PL_vtbl_regdata; |
6cef1e77 | 5021 | break; |
14befaf4 | 5022 | case PERL_MAGIC_regdatum: |
92110913 | 5023 | vtable = &PL_vtbl_regdatum; |
6cef1e77 | 5024 | break; |
14befaf4 | 5025 | case PERL_MAGIC_env: |
92110913 | 5026 | vtable = &PL_vtbl_env; |
79072805 | 5027 | break; |
14befaf4 | 5028 | case PERL_MAGIC_fm: |
92110913 | 5029 | vtable = &PL_vtbl_fm; |
55497cff | 5030 | break; |
14befaf4 | 5031 | case PERL_MAGIC_envelem: |
92110913 | 5032 | vtable = &PL_vtbl_envelem; |
79072805 | 5033 | break; |
14befaf4 | 5034 | case PERL_MAGIC_regex_global: |
92110913 | 5035 | vtable = &PL_vtbl_mglob; |
93a17b20 | 5036 | break; |
14befaf4 | 5037 | case PERL_MAGIC_isa: |
92110913 | 5038 | vtable = &PL_vtbl_isa; |
463ee0b2 | 5039 | break; |
14befaf4 | 5040 | case PERL_MAGIC_isaelem: |
92110913 | 5041 | vtable = &PL_vtbl_isaelem; |
463ee0b2 | 5042 | break; |
14befaf4 | 5043 | case PERL_MAGIC_nkeys: |
92110913 | 5044 | vtable = &PL_vtbl_nkeys; |
16660edb | 5045 | break; |
14befaf4 | 5046 | case PERL_MAGIC_dbfile: |
92110913 | 5047 | vtable = 0; |
93a17b20 | 5048 | break; |
14befaf4 | 5049 | case PERL_MAGIC_dbline: |
92110913 | 5050 | vtable = &PL_vtbl_dbline; |
79072805 | 5051 | break; |
36477c24 | 5052 | #ifdef USE_LOCALE_COLLATE |
14befaf4 | 5053 | case PERL_MAGIC_collxfrm: |
92110913 | 5054 | vtable = &PL_vtbl_collxfrm; |
bbce6d69 | 5055 | break; |
36477c24 | 5056 | #endif /* USE_LOCALE_COLLATE */ |
14befaf4 | 5057 | case PERL_MAGIC_tied: |
92110913 | 5058 | vtable = &PL_vtbl_pack; |
463ee0b2 | 5059 | break; |
14befaf4 DM |
5060 | case PERL_MAGIC_tiedelem: |
5061 | case PERL_MAGIC_tiedscalar: | |
92110913 | 5062 | vtable = &PL_vtbl_packelem; |
463ee0b2 | 5063 | break; |
14befaf4 | 5064 | case PERL_MAGIC_qr: |
92110913 | 5065 | vtable = &PL_vtbl_regexp; |
c277df42 | 5066 | break; |
14befaf4 | 5067 | case PERL_MAGIC_sig: |
92110913 | 5068 | vtable = &PL_vtbl_sig; |
79072805 | 5069 | break; |
14befaf4 | 5070 | case PERL_MAGIC_sigelem: |
92110913 | 5071 | vtable = &PL_vtbl_sigelem; |
79072805 | 5072 | break; |
14befaf4 | 5073 | case PERL_MAGIC_taint: |
92110913 | 5074 | vtable = &PL_vtbl_taint; |
463ee0b2 | 5075 | break; |
14befaf4 | 5076 | case PERL_MAGIC_uvar: |
92110913 | 5077 | vtable = &PL_vtbl_uvar; |
79072805 | 5078 | break; |
14befaf4 | 5079 | case PERL_MAGIC_vec: |
92110913 | 5080 | vtable = &PL_vtbl_vec; |
79072805 | 5081 | break; |
a3874608 | 5082 | case PERL_MAGIC_arylen_p: |
bfcb3514 | 5083 | case PERL_MAGIC_rhash: |
8d2f4536 | 5084 | case PERL_MAGIC_symtab: |
ece467f9 JP |
5085 | case PERL_MAGIC_vstring: |
5086 | vtable = 0; | |
5087 | break; | |
7e8c5dac HS |
5088 | case PERL_MAGIC_utf8: |
5089 | vtable = &PL_vtbl_utf8; | |
5090 | break; | |
14befaf4 | 5091 | case PERL_MAGIC_substr: |
92110913 | 5092 | vtable = &PL_vtbl_substr; |
79072805 | 5093 | break; |
14befaf4 | 5094 | case PERL_MAGIC_defelem: |
92110913 | 5095 | vtable = &PL_vtbl_defelem; |
5f05dabc | 5096 | break; |
14befaf4 | 5097 | case PERL_MAGIC_glob: |
92110913 | 5098 | vtable = &PL_vtbl_glob; |
79072805 | 5099 | break; |
14befaf4 | 5100 | case PERL_MAGIC_arylen: |
92110913 | 5101 | vtable = &PL_vtbl_arylen; |
79072805 | 5102 | break; |
14befaf4 | 5103 | case PERL_MAGIC_pos: |
92110913 | 5104 | vtable = &PL_vtbl_pos; |
a0d0e21e | 5105 | break; |
14befaf4 | 5106 | case PERL_MAGIC_backref: |
92110913 | 5107 | vtable = &PL_vtbl_backref; |
810b8aa5 | 5108 | break; |
14befaf4 DM |
5109 | case PERL_MAGIC_ext: |
5110 | /* Reserved for use by extensions not perl internals. */ | |
4633a7c4 LW |
5111 | /* Useful for attaching extension internal data to perl vars. */ |
5112 | /* Note that multiple extensions may clash if magical scalars */ | |
5113 | /* etc holding private data from one are passed to another. */ | |
a0d0e21e | 5114 | break; |
79072805 | 5115 | default: |
14befaf4 | 5116 | Perl_croak(aTHX_ "Don't know how to handle magic of type \\%o", how); |
463ee0b2 | 5117 | } |
68795e93 | 5118 | |
92110913 | 5119 | /* Rest of work is done else where */ |
27da23d5 | 5120 | mg = sv_magicext(sv,obj,how,(MGVTBL*)vtable,name,namlen); |
68795e93 | 5121 | |
92110913 NIS |
5122 | switch (how) { |
5123 | case PERL_MAGIC_taint: | |
5124 | mg->mg_len = 1; | |
5125 | break; | |
5126 | case PERL_MAGIC_ext: | |
5127 | case PERL_MAGIC_dbfile: | |
5128 | SvRMAGICAL_on(sv); | |
5129 | break; | |
5130 | } | |
463ee0b2 LW |
5131 | } |
5132 | ||
c461cf8f JH |
5133 | /* |
5134 | =for apidoc sv_unmagic | |
5135 | ||
645c22ef | 5136 | Removes all magic of type C<type> from an SV. |
c461cf8f JH |
5137 | |
5138 | =cut | |
5139 | */ | |
5140 | ||
463ee0b2 | 5141 | int |
864dbfa3 | 5142 | Perl_sv_unmagic(pTHX_ SV *sv, int type) |
463ee0b2 LW |
5143 | { |
5144 | MAGIC* mg; | |
5145 | MAGIC** mgp; | |
91bba347 | 5146 | if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv)) |
463ee0b2 LW |
5147 | return 0; |
5148 | mgp = &SvMAGIC(sv); | |
5149 | for (mg = *mgp; mg; mg = *mgp) { | |
5150 | if (mg->mg_type == type) { | |
e1ec3a88 | 5151 | const MGVTBL* const vtbl = mg->mg_virtual; |
463ee0b2 | 5152 | *mgp = mg->mg_moremagic; |
1d7c1841 | 5153 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 5154 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 5155 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
92110913 | 5156 | if (mg->mg_len > 0) |
1edc1566 | 5157 | Safefree(mg->mg_ptr); |
565764a8 | 5158 | else if (mg->mg_len == HEf_SVKEY) |
1edc1566 | 5159 | SvREFCNT_dec((SV*)mg->mg_ptr); |
7e8c5dac HS |
5160 | else if (mg->mg_type == PERL_MAGIC_utf8 && mg->mg_ptr) |
5161 | Safefree(mg->mg_ptr); | |
9cbac4c7 | 5162 | } |
a0d0e21e LW |
5163 | if (mg->mg_flags & MGf_REFCOUNTED) |
5164 | SvREFCNT_dec(mg->mg_obj); | |
463ee0b2 LW |
5165 | Safefree(mg); |
5166 | } | |
5167 | else | |
5168 | mgp = &mg->mg_moremagic; | |
79072805 | 5169 | } |
91bba347 | 5170 | if (!SvMAGIC(sv)) { |
463ee0b2 | 5171 | SvMAGICAL_off(sv); |
06759ea0 | 5172 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
5173 | } |
5174 | ||
5175 | return 0; | |
79072805 LW |
5176 | } |
5177 | ||
c461cf8f JH |
5178 | /* |
5179 | =for apidoc sv_rvweaken | |
5180 | ||
645c22ef DM |
5181 | Weaken a reference: set the C<SvWEAKREF> flag on this RV; give the |
5182 | referred-to SV C<PERL_MAGIC_backref> magic if it hasn't already; and | |
5183 | push a back-reference to this RV onto the array of backreferences | |
5184 | associated with that magic. | |
c461cf8f JH |
5185 | |
5186 | =cut | |
5187 | */ | |
5188 | ||
810b8aa5 | 5189 | SV * |
864dbfa3 | 5190 | Perl_sv_rvweaken(pTHX_ SV *sv) |
810b8aa5 GS |
5191 | { |
5192 | SV *tsv; | |
5193 | if (!SvOK(sv)) /* let undefs pass */ | |
5194 | return sv; | |
5195 | if (!SvROK(sv)) | |
cea2e8a9 | 5196 | Perl_croak(aTHX_ "Can't weaken a nonreference"); |
810b8aa5 | 5197 | else if (SvWEAKREF(sv)) { |
810b8aa5 | 5198 | if (ckWARN(WARN_MISC)) |
9014280d | 5199 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Reference is already weak"); |
810b8aa5 GS |
5200 | return sv; |
5201 | } | |
5202 | tsv = SvRV(sv); | |
5203 | sv_add_backref(tsv, sv); | |
5204 | SvWEAKREF_on(sv); | |
1c846c1f | 5205 | SvREFCNT_dec(tsv); |
810b8aa5 GS |
5206 | return sv; |
5207 | } | |
5208 | ||
645c22ef DM |
5209 | /* Give tsv backref magic if it hasn't already got it, then push a |
5210 | * back-reference to sv onto the array associated with the backref magic. | |
5211 | */ | |
5212 | ||
810b8aa5 | 5213 | STATIC void |
cea2e8a9 | 5214 | S_sv_add_backref(pTHX_ SV *tsv, SV *sv) |
810b8aa5 GS |
5215 | { |
5216 | AV *av; | |
5217 | MAGIC *mg; | |
14befaf4 | 5218 | if (SvMAGICAL(tsv) && (mg = mg_find(tsv, PERL_MAGIC_backref))) |
810b8aa5 GS |
5219 | av = (AV*)mg->mg_obj; |
5220 | else { | |
5221 | av = newAV(); | |
14befaf4 | 5222 | sv_magic(tsv, (SV*)av, PERL_MAGIC_backref, NULL, 0); |
d99b02a1 DM |
5223 | /* av now has a refcnt of 2, which avoids it getting freed |
5224 | * before us during global cleanup. The extra ref is removed | |
5225 | * by magic_killbackrefs() when tsv is being freed */ | |
810b8aa5 | 5226 | } |
d91d49e8 | 5227 | if (AvFILLp(av) >= AvMAX(av)) { |
d91d49e8 MM |
5228 | av_extend(av, AvFILLp(av)+1); |
5229 | } | |
5230 | AvARRAY(av)[++AvFILLp(av)] = sv; /* av_push() */ | |
810b8aa5 GS |
5231 | } |
5232 | ||
645c22ef DM |
5233 | /* delete a back-reference to ourselves from the backref magic associated |
5234 | * with the SV we point to. | |
5235 | */ | |
5236 | ||
1c846c1f | 5237 | STATIC void |
cea2e8a9 | 5238 | S_sv_del_backref(pTHX_ SV *sv) |
810b8aa5 GS |
5239 | { |
5240 | AV *av; | |
5241 | SV **svp; | |
5242 | I32 i; | |
1b6737cc | 5243 | SV * const tsv = SvRV(sv); |
c04a4dfe | 5244 | MAGIC *mg = NULL; |
14befaf4 | 5245 | if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, PERL_MAGIC_backref))) |
cea2e8a9 | 5246 | Perl_croak(aTHX_ "panic: del_backref"); |
810b8aa5 GS |
5247 | av = (AV *)mg->mg_obj; |
5248 | svp = AvARRAY(av); | |
6a76db8b NC |
5249 | /* We shouldn't be in here more than once, but for paranoia reasons lets |
5250 | not assume this. */ | |
5251 | for (i = AvFILLp(av); i >= 0; i--) { | |
5252 | if (svp[i] == sv) { | |
5253 | const SSize_t fill = AvFILLp(av); | |
5254 | if (i != fill) { | |
5255 | /* We weren't the last entry. | |
5256 | An unordered list has this property that you can take the | |
5257 | last element off the end to fill the hole, and it's still | |
5258 | an unordered list :-) | |
5259 | */ | |
5260 | svp[i] = svp[fill]; | |
5261 | } | |
5262 | svp[fill] = Nullsv; | |
5263 | AvFILLp(av) = fill - 1; | |
5264 | } | |
5265 | } | |
810b8aa5 GS |
5266 | } |
5267 | ||
954c1994 GS |
5268 | /* |
5269 | =for apidoc sv_insert | |
5270 | ||
5271 | Inserts a string at the specified offset/length within the SV. Similar to | |
5272 | the Perl substr() function. | |
5273 | ||
5274 | =cut | |
5275 | */ | |
5276 | ||
79072805 | 5277 | void |
e1ec3a88 | 5278 | Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, const char *little, STRLEN littlelen) |
79072805 LW |
5279 | { |
5280 | register char *big; | |
5281 | register char *mid; | |
5282 | register char *midend; | |
5283 | register char *bigend; | |
5284 | register I32 i; | |
6ff81951 | 5285 | STRLEN curlen; |
1c846c1f | 5286 | |
79072805 | 5287 | |
8990e307 | 5288 | if (!bigstr) |
cea2e8a9 | 5289 | Perl_croak(aTHX_ "Can't modify non-existent substring"); |
6ff81951 | 5290 | SvPV_force(bigstr, curlen); |
60fa28ff | 5291 | (void)SvPOK_only_UTF8(bigstr); |
6ff81951 GS |
5292 | if (offset + len > curlen) { |
5293 | SvGROW(bigstr, offset+len+1); | |
93524f2b | 5294 | Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char); |
6ff81951 GS |
5295 | SvCUR_set(bigstr, offset+len); |
5296 | } | |
79072805 | 5297 | |
69b47968 | 5298 | SvTAINT(bigstr); |
79072805 LW |
5299 | i = littlelen - len; |
5300 | if (i > 0) { /* string might grow */ | |
a0d0e21e | 5301 | big = SvGROW(bigstr, SvCUR(bigstr) + i + 1); |
79072805 LW |
5302 | mid = big + offset + len; |
5303 | midend = bigend = big + SvCUR(bigstr); | |
5304 | bigend += i; | |
5305 | *bigend = '\0'; | |
5306 | while (midend > mid) /* shove everything down */ | |
5307 | *--bigend = *--midend; | |
5308 | Move(little,big+offset,littlelen,char); | |
b162af07 | 5309 | SvCUR_set(bigstr, SvCUR(bigstr) + i); |
79072805 LW |
5310 | SvSETMAGIC(bigstr); |
5311 | return; | |
5312 | } | |
5313 | else if (i == 0) { | |
463ee0b2 | 5314 | Move(little,SvPVX(bigstr)+offset,len,char); |
79072805 LW |
5315 | SvSETMAGIC(bigstr); |
5316 | return; | |
5317 | } | |
5318 | ||
463ee0b2 | 5319 | big = SvPVX(bigstr); |
79072805 LW |
5320 | mid = big + offset; |
5321 | midend = mid + len; | |
5322 | bigend = big + SvCUR(bigstr); | |
5323 | ||
5324 | if (midend > bigend) | |
cea2e8a9 | 5325 | Perl_croak(aTHX_ "panic: sv_insert"); |
79072805 LW |
5326 | |
5327 | if (mid - big > bigend - midend) { /* faster to shorten from end */ | |
5328 | if (littlelen) { | |
5329 | Move(little, mid, littlelen,char); | |
5330 | mid += littlelen; | |
5331 | } | |
5332 | i = bigend - midend; | |
5333 | if (i > 0) { | |
5334 | Move(midend, mid, i,char); | |
5335 | mid += i; | |
5336 | } | |
5337 | *mid = '\0'; | |
5338 | SvCUR_set(bigstr, mid - big); | |
5339 | } | |
155aba94 | 5340 | else if ((i = mid - big)) { /* faster from front */ |
79072805 LW |
5341 | midend -= littlelen; |
5342 | mid = midend; | |
5343 | sv_chop(bigstr,midend-i); | |
5344 | big += i; | |
5345 | while (i--) | |
5346 | *--midend = *--big; | |
5347 | if (littlelen) | |
5348 | Move(little, mid, littlelen,char); | |
5349 | } | |
5350 | else if (littlelen) { | |
5351 | midend -= littlelen; | |
5352 | sv_chop(bigstr,midend); | |
5353 | Move(little,midend,littlelen,char); | |
5354 | } | |
5355 | else { | |
5356 | sv_chop(bigstr,midend); | |
5357 | } | |
5358 | SvSETMAGIC(bigstr); | |
5359 | } | |
5360 | ||
c461cf8f JH |
5361 | /* |
5362 | =for apidoc sv_replace | |
5363 | ||
5364 | Make the first argument a copy of the second, then delete the original. | |
645c22ef DM |
5365 | The target SV physically takes over ownership of the body of the source SV |
5366 | and inherits its flags; however, the target keeps any magic it owns, | |
5367 | and any magic in the source is discarded. | |
ff276b08 | 5368 | Note that this is a rather specialist SV copying operation; most of the |
645c22ef | 5369 | time you'll want to use C<sv_setsv> or one of its many macro front-ends. |
c461cf8f JH |
5370 | |
5371 | =cut | |
5372 | */ | |
79072805 LW |
5373 | |
5374 | void | |
864dbfa3 | 5375 | Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv) |
79072805 | 5376 | { |
a3b680e6 | 5377 | const U32 refcnt = SvREFCNT(sv); |
765f542d | 5378 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
0453d815 | 5379 | if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL)) |
9014280d | 5380 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Reference miscount in sv_replace()"); |
93a17b20 | 5381 | if (SvMAGICAL(sv)) { |
a0d0e21e LW |
5382 | if (SvMAGICAL(nsv)) |
5383 | mg_free(nsv); | |
5384 | else | |
5385 | sv_upgrade(nsv, SVt_PVMG); | |
b162af07 | 5386 | SvMAGIC_set(nsv, SvMAGIC(sv)); |
a0d0e21e | 5387 | SvFLAGS(nsv) |= SvMAGICAL(sv); |
93a17b20 | 5388 | SvMAGICAL_off(sv); |
b162af07 | 5389 | SvMAGIC_set(sv, NULL); |
93a17b20 | 5390 | } |
79072805 LW |
5391 | SvREFCNT(sv) = 0; |
5392 | sv_clear(sv); | |
477f5d66 | 5393 | assert(!SvREFCNT(sv)); |
fd0854ff DM |
5394 | #ifdef DEBUG_LEAKING_SCALARS |
5395 | sv->sv_flags = nsv->sv_flags; | |
5396 | sv->sv_any = nsv->sv_any; | |
5397 | sv->sv_refcnt = nsv->sv_refcnt; | |
f34d0642 | 5398 | sv->sv_u = nsv->sv_u; |
fd0854ff | 5399 | #else |
79072805 | 5400 | StructCopy(nsv,sv,SV); |
fd0854ff | 5401 | #endif |
7b2c381c NC |
5402 | /* Currently could join these into one piece of pointer arithmetic, but |
5403 | it would be unclear. */ | |
5404 | if(SvTYPE(sv) == SVt_IV) | |
5405 | SvANY(sv) | |
339049b0 | 5406 | = (XPVIV*)((char*)&(sv->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
7b2c381c | 5407 | else if (SvTYPE(sv) == SVt_RV) { |
339049b0 | 5408 | SvANY(sv) = &sv->sv_u.svu_rv; |
7b2c381c NC |
5409 | } |
5410 | ||
fd0854ff | 5411 | |
f8c7b90f | 5412 | #ifdef PERL_OLD_COPY_ON_WRITE |
d3d0e6f1 NC |
5413 | if (SvIsCOW_normal(nsv)) { |
5414 | /* We need to follow the pointers around the loop to make the | |
5415 | previous SV point to sv, rather than nsv. */ | |
5416 | SV *next; | |
5417 | SV *current = nsv; | |
5418 | while ((next = SV_COW_NEXT_SV(current)) != nsv) { | |
5419 | assert(next); | |
5420 | current = next; | |
3f7c398e | 5421 | assert(SvPVX_const(current) == SvPVX_const(nsv)); |
d3d0e6f1 NC |
5422 | } |
5423 | /* Make the SV before us point to the SV after us. */ | |
5424 | if (DEBUG_C_TEST) { | |
5425 | PerlIO_printf(Perl_debug_log, "previous is\n"); | |
5426 | sv_dump(current); | |
a29f6d03 NC |
5427 | PerlIO_printf(Perl_debug_log, |
5428 | "move it from 0x%"UVxf" to 0x%"UVxf"\n", | |
d3d0e6f1 NC |
5429 | (UV) SV_COW_NEXT_SV(current), (UV) sv); |
5430 | } | |
a29f6d03 | 5431 | SV_COW_NEXT_SV_SET(current, sv); |
d3d0e6f1 NC |
5432 | } |
5433 | #endif | |
79072805 | 5434 | SvREFCNT(sv) = refcnt; |
1edc1566 | 5435 | SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */ |
39cf41c2 | 5436 | SvREFCNT(nsv) = 0; |
463ee0b2 | 5437 | del_SV(nsv); |
79072805 LW |
5438 | } |
5439 | ||
c461cf8f JH |
5440 | /* |
5441 | =for apidoc sv_clear | |
5442 | ||
645c22ef DM |
5443 | Clear an SV: call any destructors, free up any memory used by the body, |
5444 | and free the body itself. The SV's head is I<not> freed, although | |
5445 | its type is set to all 1's so that it won't inadvertently be assumed | |
5446 | to be live during global destruction etc. | |
5447 | This function should only be called when REFCNT is zero. Most of the time | |
5448 | you'll want to call C<sv_free()> (or its macro wrapper C<SvREFCNT_dec>) | |
5449 | instead. | |
c461cf8f JH |
5450 | |
5451 | =cut | |
5452 | */ | |
5453 | ||
79072805 | 5454 | void |
864dbfa3 | 5455 | Perl_sv_clear(pTHX_ register SV *sv) |
79072805 | 5456 | { |
27da23d5 | 5457 | dVAR; |
ec12f114 | 5458 | HV* stash; |
79072805 LW |
5459 | assert(sv); |
5460 | assert(SvREFCNT(sv) == 0); | |
5461 | ||
ed6116ce | 5462 | if (SvOBJECT(sv)) { |
3280af22 | 5463 | if (PL_defstash) { /* Still have a symbol table? */ |
39644a26 | 5464 | dSP; |
d460ef45 | 5465 | do { |
b464bac0 | 5466 | CV* destructor; |
4e8e7886 | 5467 | stash = SvSTASH(sv); |
32251b26 | 5468 | destructor = StashHANDLER(stash,DESTROY); |
4e8e7886 | 5469 | if (destructor) { |
1b6737cc | 5470 | SV* const tmpref = newRV(sv); |
5cc433a6 | 5471 | SvREADONLY_on(tmpref); /* DESTROY() could be naughty */ |
4e8e7886 | 5472 | ENTER; |
e788e7d3 | 5473 | PUSHSTACKi(PERLSI_DESTROY); |
4e8e7886 GS |
5474 | EXTEND(SP, 2); |
5475 | PUSHMARK(SP); | |
5cc433a6 | 5476 | PUSHs(tmpref); |
4e8e7886 | 5477 | PUTBACK; |
44389ee9 | 5478 | call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR|G_VOID); |
7a5fa8a2 NIS |
5479 | |
5480 | ||
d3acc0f7 | 5481 | POPSTACK; |
3095d977 | 5482 | SPAGAIN; |
4e8e7886 | 5483 | LEAVE; |
5cc433a6 AB |
5484 | if(SvREFCNT(tmpref) < 2) { |
5485 | /* tmpref is not kept alive! */ | |
5486 | SvREFCNT(sv)--; | |
b162af07 | 5487 | SvRV_set(tmpref, NULL); |
5cc433a6 AB |
5488 | SvROK_off(tmpref); |
5489 | } | |
5490 | SvREFCNT_dec(tmpref); | |
4e8e7886 GS |
5491 | } |
5492 | } while (SvOBJECT(sv) && SvSTASH(sv) != stash); | |
8ebc5c01 | 5493 | |
6f44e0a4 JP |
5494 | |
5495 | if (SvREFCNT(sv)) { | |
5496 | if (PL_in_clean_objs) | |
cea2e8a9 | 5497 | Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'", |
bfcb3514 | 5498 | HvNAME_get(stash)); |
6f44e0a4 JP |
5499 | /* DESTROY gave object new lease on life */ |
5500 | return; | |
5501 | } | |
a0d0e21e | 5502 | } |
4e8e7886 | 5503 | |
a0d0e21e | 5504 | if (SvOBJECT(sv)) { |
4e8e7886 | 5505 | SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */ |
a0d0e21e LW |
5506 | SvOBJECT_off(sv); /* Curse the object. */ |
5507 | if (SvTYPE(sv) != SVt_PVIO) | |
3280af22 | 5508 | --PL_sv_objcount; /* XXX Might want something more general */ |
a0d0e21e | 5509 | } |
463ee0b2 | 5510 | } |
524189f1 JH |
5511 | if (SvTYPE(sv) >= SVt_PVMG) { |
5512 | if (SvMAGIC(sv)) | |
5513 | mg_free(sv); | |
bce8f412 | 5514 | if (SvTYPE(sv) == SVt_PVMG && SvFLAGS(sv) & SVpad_TYPED) |
524189f1 JH |
5515 | SvREFCNT_dec(SvSTASH(sv)); |
5516 | } | |
ec12f114 | 5517 | stash = NULL; |
79072805 | 5518 | switch (SvTYPE(sv)) { |
8990e307 | 5519 | case SVt_PVIO: |
df0bd2f4 GS |
5520 | if (IoIFP(sv) && |
5521 | IoIFP(sv) != PerlIO_stdin() && | |
5f05dabc | 5522 | IoIFP(sv) != PerlIO_stdout() && |
5523 | IoIFP(sv) != PerlIO_stderr()) | |
93578b34 | 5524 | { |
f2b5be74 | 5525 | io_close((IO*)sv, FALSE); |
93578b34 | 5526 | } |
1d7c1841 | 5527 | if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP)) |
1236053a | 5528 | PerlDir_close(IoDIRP(sv)); |
1d7c1841 | 5529 | IoDIRP(sv) = (DIR*)NULL; |
8990e307 LW |
5530 | Safefree(IoTOP_NAME(sv)); |
5531 | Safefree(IoFMT_NAME(sv)); | |
5532 | Safefree(IoBOTTOM_NAME(sv)); | |
a0d0e21e | 5533 | /* FALL THROUGH */ |
79072805 | 5534 | case SVt_PVBM: |
a0d0e21e | 5535 | goto freescalar; |
79072805 | 5536 | case SVt_PVCV: |
748a9306 | 5537 | case SVt_PVFM: |
85e6fe83 | 5538 | cv_undef((CV*)sv); |
a0d0e21e | 5539 | goto freescalar; |
79072805 | 5540 | case SVt_PVHV: |
85e6fe83 | 5541 | hv_undef((HV*)sv); |
a0d0e21e | 5542 | break; |
79072805 | 5543 | case SVt_PVAV: |
85e6fe83 | 5544 | av_undef((AV*)sv); |
a0d0e21e | 5545 | break; |
02270b4e | 5546 | case SVt_PVLV: |
dd28f7bb DM |
5547 | if (LvTYPE(sv) == 'T') { /* for tie: return HE to pool */ |
5548 | SvREFCNT_dec(HeKEY_sv((HE*)LvTARG(sv))); | |
5549 | HeNEXT((HE*)LvTARG(sv)) = PL_hv_fetch_ent_mh; | |
5550 | PL_hv_fetch_ent_mh = (HE*)LvTARG(sv); | |
5551 | } | |
5552 | else if (LvTYPE(sv) != 't') /* unless tie: unrefcnted fake SV** */ | |
5553 | SvREFCNT_dec(LvTARG(sv)); | |
02270b4e | 5554 | goto freescalar; |
a0d0e21e | 5555 | case SVt_PVGV: |
1edc1566 | 5556 | gp_free((GV*)sv); |
a0d0e21e | 5557 | Safefree(GvNAME(sv)); |
ec12f114 JPC |
5558 | /* cannot decrease stash refcount yet, as we might recursively delete |
5559 | ourselves when the refcnt drops to zero. Delay SvREFCNT_dec | |
5560 | of stash until current sv is completely gone. | |
5561 | -- JohnPC, 27 Mar 1998 */ | |
5562 | stash = GvSTASH(sv); | |
a0d0e21e | 5563 | /* FALL THROUGH */ |
79072805 | 5564 | case SVt_PVMG: |
79072805 LW |
5565 | case SVt_PVNV: |
5566 | case SVt_PVIV: | |
a0d0e21e | 5567 | freescalar: |
5228ca4e NC |
5568 | /* Don't bother with SvOOK_off(sv); as we're only going to free it. */ |
5569 | if (SvOOK(sv)) { | |
93524f2b | 5570 | SvPV_set(sv, SvPVX_mutable(sv) - SvIVX(sv)); |
5228ca4e NC |
5571 | /* Don't even bother with turning off the OOK flag. */ |
5572 | } | |
79072805 LW |
5573 | /* FALL THROUGH */ |
5574 | case SVt_PV: | |
a0d0e21e | 5575 | case SVt_RV: |
810b8aa5 GS |
5576 | if (SvROK(sv)) { |
5577 | if (SvWEAKREF(sv)) | |
5578 | sv_del_backref(sv); | |
5579 | else | |
5580 | SvREFCNT_dec(SvRV(sv)); | |
5581 | } | |
f8c7b90f | 5582 | #ifdef PERL_OLD_COPY_ON_WRITE |
3f7c398e | 5583 | else if (SvPVX_const(sv)) { |
765f542d NC |
5584 | if (SvIsCOW(sv)) { |
5585 | /* I believe I need to grab the global SV mutex here and | |
5586 | then recheck the COW status. */ | |
46187eeb NC |
5587 | if (DEBUG_C_TEST) { |
5588 | PerlIO_printf(Perl_debug_log, "Copy on write: clear\n"); | |
e419cbc5 | 5589 | sv_dump(sv); |
46187eeb | 5590 | } |
bdd68bc3 NC |
5591 | sv_release_COW(sv, SvPVX_const(sv), SvLEN(sv), |
5592 | SV_COW_NEXT_SV(sv)); | |
765f542d NC |
5593 | /* And drop it here. */ |
5594 | SvFAKE_off(sv); | |
5595 | } else if (SvLEN(sv)) { | |
3f7c398e | 5596 | Safefree(SvPVX_const(sv)); |
765f542d NC |
5597 | } |
5598 | } | |
5599 | #else | |
3f7c398e | 5600 | else if (SvPVX_const(sv) && SvLEN(sv)) |
94010e71 | 5601 | Safefree(SvPVX_mutable(sv)); |
3f7c398e | 5602 | else if (SvPVX_const(sv) && SvREADONLY(sv) && SvFAKE(sv)) { |
bdd68bc3 | 5603 | unshare_hek(SvSHARED_HEK_FROM_PV(SvPVX_const(sv))); |
1c846c1f NIS |
5604 | SvFAKE_off(sv); |
5605 | } | |
765f542d | 5606 | #endif |
79072805 | 5607 | break; |
a0d0e21e | 5608 | /* |
79072805 | 5609 | case SVt_NV: |
79072805 | 5610 | case SVt_IV: |
79072805 LW |
5611 | case SVt_NULL: |
5612 | break; | |
a0d0e21e | 5613 | */ |
79072805 LW |
5614 | } |
5615 | ||
5616 | switch (SvTYPE(sv)) { | |
5617 | case SVt_NULL: | |
5618 | break; | |
79072805 | 5619 | case SVt_IV: |
79072805 LW |
5620 | break; |
5621 | case SVt_NV: | |
5622 | del_XNV(SvANY(sv)); | |
5623 | break; | |
ed6116ce | 5624 | case SVt_RV: |
ed6116ce | 5625 | break; |
79072805 LW |
5626 | case SVt_PV: |
5627 | del_XPV(SvANY(sv)); | |
5628 | break; | |
5629 | case SVt_PVIV: | |
5630 | del_XPVIV(SvANY(sv)); | |
5631 | break; | |
5632 | case SVt_PVNV: | |
5633 | del_XPVNV(SvANY(sv)); | |
5634 | break; | |
5635 | case SVt_PVMG: | |
5636 | del_XPVMG(SvANY(sv)); | |
5637 | break; | |
5638 | case SVt_PVLV: | |
5639 | del_XPVLV(SvANY(sv)); | |
5640 | break; | |
5641 | case SVt_PVAV: | |
5642 | del_XPVAV(SvANY(sv)); | |
5643 | break; | |
5644 | case SVt_PVHV: | |
5645 | del_XPVHV(SvANY(sv)); | |
5646 | break; | |
5647 | case SVt_PVCV: | |
5648 | del_XPVCV(SvANY(sv)); | |
5649 | break; | |
5650 | case SVt_PVGV: | |
5651 | del_XPVGV(SvANY(sv)); | |
ec12f114 JPC |
5652 | /* code duplication for increased performance. */ |
5653 | SvFLAGS(sv) &= SVf_BREAK; | |
5654 | SvFLAGS(sv) |= SVTYPEMASK; | |
5655 | /* decrease refcount of the stash that owns this GV, if any */ | |
5656 | if (stash) | |
5657 | SvREFCNT_dec(stash); | |
5658 | return; /* not break, SvFLAGS reset already happened */ | |
79072805 LW |
5659 | case SVt_PVBM: |
5660 | del_XPVBM(SvANY(sv)); | |
5661 | break; | |
5662 | case SVt_PVFM: | |
5663 | del_XPVFM(SvANY(sv)); | |
5664 | break; | |
8990e307 LW |
5665 | case SVt_PVIO: |
5666 | del_XPVIO(SvANY(sv)); | |
5667 | break; | |
79072805 | 5668 | } |
a0d0e21e | 5669 | SvFLAGS(sv) &= SVf_BREAK; |
8990e307 | 5670 | SvFLAGS(sv) |= SVTYPEMASK; |
79072805 LW |
5671 | } |
5672 | ||
645c22ef DM |
5673 | /* |
5674 | =for apidoc sv_newref | |
5675 | ||
5676 | Increment an SV's reference count. Use the C<SvREFCNT_inc()> wrapper | |
5677 | instead. | |
5678 | ||
5679 | =cut | |
5680 | */ | |
5681 | ||
79072805 | 5682 | SV * |
864dbfa3 | 5683 | Perl_sv_newref(pTHX_ SV *sv) |
79072805 | 5684 | { |
463ee0b2 | 5685 | if (sv) |
4db098f4 | 5686 | (SvREFCNT(sv))++; |
79072805 LW |
5687 | return sv; |
5688 | } | |
5689 | ||
c461cf8f JH |
5690 | /* |
5691 | =for apidoc sv_free | |
5692 | ||
645c22ef DM |
5693 | Decrement an SV's reference count, and if it drops to zero, call |
5694 | C<sv_clear> to invoke destructors and free up any memory used by | |
5695 | the body; finally, deallocate the SV's head itself. | |
5696 | Normally called via a wrapper macro C<SvREFCNT_dec>. | |
c461cf8f JH |
5697 | |
5698 | =cut | |
5699 | */ | |
5700 | ||
79072805 | 5701 | void |
864dbfa3 | 5702 | Perl_sv_free(pTHX_ SV *sv) |
79072805 | 5703 | { |
27da23d5 | 5704 | dVAR; |
79072805 LW |
5705 | if (!sv) |
5706 | return; | |
a0d0e21e LW |
5707 | if (SvREFCNT(sv) == 0) { |
5708 | if (SvFLAGS(sv) & SVf_BREAK) | |
645c22ef DM |
5709 | /* this SV's refcnt has been artificially decremented to |
5710 | * trigger cleanup */ | |
a0d0e21e | 5711 | return; |
3280af22 | 5712 | if (PL_in_clean_all) /* All is fair */ |
1edc1566 | 5713 | return; |
d689ffdd JP |
5714 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5715 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5716 | SvREFCNT(sv) = (~(U32)0)/2; | |
5717 | return; | |
5718 | } | |
0453d815 | 5719 | if (ckWARN_d(WARN_INTERNAL)) |
d5dede04 | 5720 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
5721 | "Attempt to free unreferenced scalar: SV 0x%"UVxf |
5722 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 LW |
5723 | return; |
5724 | } | |
4db098f4 | 5725 | if (--(SvREFCNT(sv)) > 0) |
8990e307 | 5726 | return; |
8c4d3c90 NC |
5727 | Perl_sv_free2(aTHX_ sv); |
5728 | } | |
5729 | ||
5730 | void | |
5731 | Perl_sv_free2(pTHX_ SV *sv) | |
5732 | { | |
27da23d5 | 5733 | dVAR; |
463ee0b2 LW |
5734 | #ifdef DEBUGGING |
5735 | if (SvTEMP(sv)) { | |
0453d815 | 5736 | if (ckWARN_d(WARN_DEBUGGING)) |
9014280d | 5737 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
472d47bc SB |
5738 | "Attempt to free temp prematurely: SV 0x%"UVxf |
5739 | pTHX__FORMAT, PTR2UV(sv) pTHX__VALUE); | |
79072805 | 5740 | return; |
79072805 | 5741 | } |
463ee0b2 | 5742 | #endif |
d689ffdd JP |
5743 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) { |
5744 | /* make sure SvREFCNT(sv)==0 happens very seldom */ | |
5745 | SvREFCNT(sv) = (~(U32)0)/2; | |
5746 | return; | |
5747 | } | |
79072805 | 5748 | sv_clear(sv); |
477f5d66 CS |
5749 | if (! SvREFCNT(sv)) |
5750 | del_SV(sv); | |
79072805 LW |
5751 | } |
5752 | ||
954c1994 GS |
5753 | /* |
5754 | =for apidoc sv_len | |
5755 | ||
645c22ef DM |
5756 | Returns the length of the string in the SV. Handles magic and type |
5757 | coercion. See also C<SvCUR>, which gives raw access to the xpv_cur slot. | |
954c1994 GS |
5758 | |
5759 | =cut | |
5760 | */ | |
5761 | ||
79072805 | 5762 | STRLEN |
864dbfa3 | 5763 | Perl_sv_len(pTHX_ register SV *sv) |
79072805 | 5764 | { |
463ee0b2 | 5765 | STRLEN len; |
79072805 LW |
5766 | |
5767 | if (!sv) | |
5768 | return 0; | |
5769 | ||
8990e307 | 5770 | if (SvGMAGICAL(sv)) |
565764a8 | 5771 | len = mg_length(sv); |
8990e307 | 5772 | else |
4d84ee25 | 5773 | (void)SvPV_const(sv, len); |
463ee0b2 | 5774 | return len; |
79072805 LW |
5775 | } |
5776 | ||
c461cf8f JH |
5777 | /* |
5778 | =for apidoc sv_len_utf8 | |
5779 | ||
5780 | Returns the number of characters in the string in an SV, counting wide | |
1e54db1a | 5781 | UTF-8 bytes as a single character. Handles magic and type coercion. |
c461cf8f JH |
5782 | |
5783 | =cut | |
5784 | */ | |
5785 | ||
7e8c5dac HS |
5786 | /* |
5787 | * The length is cached in PERL_UTF8_magic, in the mg_len field. Also the | |
5788 | * mg_ptr is used, by sv_pos_u2b(), see the comments of S_utf8_mg_pos_init(). | |
5789 | * (Note that the mg_len is not the length of the mg_ptr field.) | |
7a5fa8a2 | 5790 | * |
7e8c5dac HS |
5791 | */ |
5792 | ||
a0ed51b3 | 5793 | STRLEN |
864dbfa3 | 5794 | Perl_sv_len_utf8(pTHX_ register SV *sv) |
a0ed51b3 | 5795 | { |
a0ed51b3 LW |
5796 | if (!sv) |
5797 | return 0; | |
5798 | ||
a0ed51b3 | 5799 | if (SvGMAGICAL(sv)) |
b76347f2 | 5800 | return mg_length(sv); |
a0ed51b3 | 5801 | else |
b76347f2 | 5802 | { |
7e8c5dac | 5803 | STRLEN len, ulen; |
e62f0680 | 5804 | const U8 *s = (U8*)SvPV_const(sv, len); |
7e8c5dac HS |
5805 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : 0; |
5806 | ||
e23c8137 | 5807 | if (mg && mg->mg_len != -1 && (mg->mg_len > 0 || len == 0)) { |
7e8c5dac | 5808 | ulen = mg->mg_len; |
e23c8137 JH |
5809 | #ifdef PERL_UTF8_CACHE_ASSERT |
5810 | assert(ulen == Perl_utf8_length(aTHX_ s, s + len)); | |
5811 | #endif | |
5812 | } | |
7e8c5dac HS |
5813 | else { |
5814 | ulen = Perl_utf8_length(aTHX_ s, s + len); | |
5815 | if (!mg && !SvREADONLY(sv)) { | |
5816 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
5817 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
5818 | assert(mg); | |
5819 | } | |
5820 | if (mg) | |
5821 | mg->mg_len = ulen; | |
5822 | } | |
5823 | return ulen; | |
5824 | } | |
5825 | } | |
5826 | ||
5827 | /* S_utf8_mg_pos_init() is used to initialize the mg_ptr field of | |
5828 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5829 | * between UTF-8 and byte offsets. There are two (substr offset and substr | |
5830 | * length, the i offset, PERL_MAGIC_UTF8_CACHESIZE) times two (UTF-8 offset | |
5831 | * and byte offset) cache positions. | |
5832 | * | |
5833 | * The mg_len field is used by sv_len_utf8(), see its comments. | |
5834 | * Note that the mg_len is not the length of the mg_ptr field. | |
5835 | * | |
5836 | */ | |
5837 | STATIC bool | |
245d4a47 NC |
5838 | S_utf8_mg_pos_init(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, |
5839 | I32 offsetp, const U8 *s, const U8 *start) | |
7e8c5dac | 5840 | { |
7a5fa8a2 | 5841 | bool found = FALSE; |
7e8c5dac HS |
5842 | |
5843 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
8f78557a | 5844 | if (!*mgp) |
27da23d5 | 5845 | *mgp = sv_magicext(sv, 0, PERL_MAGIC_utf8, (MGVTBL*)&PL_vtbl_utf8, 0, 0); |
7e8c5dac | 5846 | assert(*mgp); |
b76347f2 | 5847 | |
7e8c5dac HS |
5848 | if ((*mgp)->mg_ptr) |
5849 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
5850 | else { | |
5851 | Newz(0, *cachep, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); | |
5852 | (*mgp)->mg_ptr = (char *) *cachep; | |
5853 | } | |
5854 | assert(*cachep); | |
5855 | ||
a3b680e6 | 5856 | (*cachep)[i] = offsetp; |
7e8c5dac HS |
5857 | (*cachep)[i+1] = s - start; |
5858 | found = TRUE; | |
a0ed51b3 | 5859 | } |
7e8c5dac HS |
5860 | |
5861 | return found; | |
a0ed51b3 LW |
5862 | } |
5863 | ||
645c22ef | 5864 | /* |
7e8c5dac HS |
5865 | * S_utf8_mg_pos() is used to query and update mg_ptr field of |
5866 | * a PERL_UTF8_magic. The mg_ptr is used to store the mapping | |
5867 | * between UTF-8 and byte offsets. See also the comments of | |
5868 | * S_utf8_mg_pos_init(). | |
5869 | * | |
5870 | */ | |
5871 | STATIC bool | |
245d4a47 | 5872 | S_utf8_mg_pos(pTHX_ SV *sv, MAGIC **mgp, STRLEN **cachep, I32 i, I32 *offsetp, I32 uoff, const U8 **sp, const U8 *start, const U8 *send) |
7e8c5dac HS |
5873 | { |
5874 | bool found = FALSE; | |
5875 | ||
5876 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
5877 | if (!*mgp) | |
5878 | *mgp = mg_find(sv, PERL_MAGIC_utf8); | |
5879 | if (*mgp && (*mgp)->mg_ptr) { | |
5880 | *cachep = (STRLEN *) (*mgp)->mg_ptr; | |
e23c8137 | 5881 | ASSERT_UTF8_CACHE(*cachep); |
667208dd | 5882 | if ((*cachep)[i] == (STRLEN)uoff) /* An exact match. */ |
7a5fa8a2 | 5883 | found = TRUE; |
7e8c5dac HS |
5884 | else { /* We will skip to the right spot. */ |
5885 | STRLEN forw = 0; | |
5886 | STRLEN backw = 0; | |
a3b680e6 | 5887 | const U8* p = NULL; |
7e8c5dac HS |
5888 | |
5889 | /* The assumption is that going backward is half | |
5890 | * the speed of going forward (that's where the | |
5891 | * 2 * backw in the below comes from). (The real | |
5892 | * figure of course depends on the UTF-8 data.) */ | |
5893 | ||
667208dd | 5894 | if ((*cachep)[i] > (STRLEN)uoff) { |
7e8c5dac | 5895 | forw = uoff; |
667208dd | 5896 | backw = (*cachep)[i] - (STRLEN)uoff; |
7e8c5dac HS |
5897 | |
5898 | if (forw < 2 * backw) | |
5899 | p = start; | |
5900 | else | |
5901 | p = start + (*cachep)[i+1]; | |
5902 | } | |
5903 | /* Try this only for the substr offset (i == 0), | |
5904 | * not for the substr length (i == 2). */ | |
5905 | else if (i == 0) { /* (*cachep)[i] < uoff */ | |
a3b680e6 | 5906 | const STRLEN ulen = sv_len_utf8(sv); |
7e8c5dac | 5907 | |
667208dd JH |
5908 | if ((STRLEN)uoff < ulen) { |
5909 | forw = (STRLEN)uoff - (*cachep)[i]; | |
5910 | backw = ulen - (STRLEN)uoff; | |
7e8c5dac HS |
5911 | |
5912 | if (forw < 2 * backw) | |
5913 | p = start + (*cachep)[i+1]; | |
5914 | else | |
5915 | p = send; | |
5916 | } | |
5917 | ||
5918 | /* If the string is not long enough for uoff, | |
5919 | * we could extend it, but not at this low a level. */ | |
5920 | } | |
5921 | ||
5922 | if (p) { | |
5923 | if (forw < 2 * backw) { | |
5924 | while (forw--) | |
5925 | p += UTF8SKIP(p); | |
5926 | } | |
5927 | else { | |
5928 | while (backw--) { | |
5929 | p--; | |
5930 | while (UTF8_IS_CONTINUATION(*p)) | |
5931 | p--; | |
5932 | } | |
5933 | } | |
5934 | ||
5935 | /* Update the cache. */ | |
667208dd | 5936 | (*cachep)[i] = (STRLEN)uoff; |
7e8c5dac | 5937 | (*cachep)[i+1] = p - start; |
8f78557a AE |
5938 | |
5939 | /* Drop the stale "length" cache */ | |
5940 | if (i == 0) { | |
5941 | (*cachep)[2] = 0; | |
5942 | (*cachep)[3] = 0; | |
5943 | } | |
7a5fa8a2 | 5944 | |
7e8c5dac HS |
5945 | found = TRUE; |
5946 | } | |
5947 | } | |
5948 | if (found) { /* Setup the return values. */ | |
5949 | *offsetp = (*cachep)[i+1]; | |
5950 | *sp = start + *offsetp; | |
5951 | if (*sp >= send) { | |
5952 | *sp = send; | |
5953 | *offsetp = send - start; | |
5954 | } | |
5955 | else if (*sp < start) { | |
5956 | *sp = start; | |
5957 | *offsetp = 0; | |
5958 | } | |
5959 | } | |
5960 | } | |
e23c8137 JH |
5961 | #ifdef PERL_UTF8_CACHE_ASSERT |
5962 | if (found) { | |
5963 | U8 *s = start; | |
5964 | I32 n = uoff; | |
5965 | ||
5966 | while (n-- && s < send) | |
5967 | s += UTF8SKIP(s); | |
5968 | ||
5969 | if (i == 0) { | |
5970 | assert(*offsetp == s - start); | |
5971 | assert((*cachep)[0] == (STRLEN)uoff); | |
5972 | assert((*cachep)[1] == *offsetp); | |
5973 | } | |
5974 | ASSERT_UTF8_CACHE(*cachep); | |
5975 | } | |
5976 | #endif | |
7e8c5dac | 5977 | } |
e23c8137 | 5978 | |
7e8c5dac HS |
5979 | return found; |
5980 | } | |
7a5fa8a2 | 5981 | |
7e8c5dac | 5982 | /* |
645c22ef DM |
5983 | =for apidoc sv_pos_u2b |
5984 | ||
1e54db1a | 5985 | Converts the value pointed to by offsetp from a count of UTF-8 chars from |
645c22ef DM |
5986 | the start of the string, to a count of the equivalent number of bytes; if |
5987 | lenp is non-zero, it does the same to lenp, but this time starting from | |
5988 | the offset, rather than from the start of the string. Handles magic and | |
5989 | type coercion. | |
5990 | ||
5991 | =cut | |
5992 | */ | |
5993 | ||
7e8c5dac HS |
5994 | /* |
5995 | * sv_pos_u2b() uses, like sv_pos_b2u(), the mg_ptr of the potential | |
5996 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
5997 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
5998 | * | |
5999 | */ | |
6000 | ||
a0ed51b3 | 6001 | void |
864dbfa3 | 6002 | Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp) |
a0ed51b3 | 6003 | { |
245d4a47 | 6004 | const U8 *start; |
a0ed51b3 LW |
6005 | STRLEN len; |
6006 | ||
6007 | if (!sv) | |
6008 | return; | |
6009 | ||
245d4a47 | 6010 | start = (U8*)SvPV_const(sv, len); |
7e8c5dac | 6011 | if (len) { |
b464bac0 AL |
6012 | STRLEN boffset = 0; |
6013 | STRLEN *cache = 0; | |
245d4a47 NC |
6014 | const U8 *s = start; |
6015 | I32 uoffset = *offsetp; | |
6016 | const U8 *send = s + len; | |
6017 | MAGIC *mg = 0; | |
6018 | bool found = FALSE; | |
7e8c5dac | 6019 | |
bdf77a2a | 6020 | if (utf8_mg_pos(sv, &mg, &cache, 0, offsetp, *offsetp, &s, start, send)) |
7e8c5dac HS |
6021 | found = TRUE; |
6022 | if (!found && uoffset > 0) { | |
6023 | while (s < send && uoffset--) | |
6024 | s += UTF8SKIP(s); | |
6025 | if (s >= send) | |
6026 | s = send; | |
a3b680e6 | 6027 | if (utf8_mg_pos_init(sv, &mg, &cache, 0, *offsetp, s, start)) |
7e8c5dac HS |
6028 | boffset = cache[1]; |
6029 | *offsetp = s - start; | |
6030 | } | |
6031 | if (lenp) { | |
6032 | found = FALSE; | |
6033 | start = s; | |
ec062429 | 6034 | if (utf8_mg_pos(sv, &mg, &cache, 2, lenp, *lenp, &s, start, send)) { |
7e8c5dac HS |
6035 | *lenp -= boffset; |
6036 | found = TRUE; | |
6037 | } | |
6038 | if (!found && *lenp > 0) { | |
6039 | I32 ulen = *lenp; | |
6040 | if (ulen > 0) | |
6041 | while (s < send && ulen--) | |
6042 | s += UTF8SKIP(s); | |
6043 | if (s >= send) | |
6044 | s = send; | |
a3b680e6 | 6045 | utf8_mg_pos_init(sv, &mg, &cache, 2, *lenp, s, start); |
7e8c5dac HS |
6046 | } |
6047 | *lenp = s - start; | |
6048 | } | |
e23c8137 | 6049 | ASSERT_UTF8_CACHE(cache); |
7e8c5dac HS |
6050 | } |
6051 | else { | |
6052 | *offsetp = 0; | |
6053 | if (lenp) | |
6054 | *lenp = 0; | |
a0ed51b3 | 6055 | } |
e23c8137 | 6056 | |
a0ed51b3 LW |
6057 | return; |
6058 | } | |
6059 | ||
645c22ef DM |
6060 | /* |
6061 | =for apidoc sv_pos_b2u | |
6062 | ||
6063 | Converts the value pointed to by offsetp from a count of bytes from the | |
1e54db1a | 6064 | start of the string, to a count of the equivalent number of UTF-8 chars. |
645c22ef DM |
6065 | Handles magic and type coercion. |
6066 | ||
6067 | =cut | |
6068 | */ | |
6069 | ||
7e8c5dac HS |
6070 | /* |
6071 | * sv_pos_b2u() uses, like sv_pos_u2b(), the mg_ptr of the potential | |
6072 | * PERL_UTF8_magic of the sv to store the mapping between UTF-8 and | |
6073 | * byte offsets. See also the comments of S_utf8_mg_pos(). | |
6074 | * | |
6075 | */ | |
6076 | ||
a0ed51b3 | 6077 | void |
7e8c5dac | 6078 | Perl_sv_pos_b2u(pTHX_ register SV* sv, I32* offsetp) |
a0ed51b3 | 6079 | { |
83003860 | 6080 | const U8* s; |
a0ed51b3 LW |
6081 | STRLEN len; |
6082 | ||
6083 | if (!sv) | |
6084 | return; | |
6085 | ||
83003860 | 6086 | s = (const U8*)SvPV_const(sv, len); |
eb160463 | 6087 | if ((I32)len < *offsetp) |
a0dbb045 | 6088 | Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset"); |
7e8c5dac | 6089 | else { |
83003860 | 6090 | const U8* send = s + *offsetp; |
7e8c5dac HS |
6091 | MAGIC* mg = NULL; |
6092 | STRLEN *cache = NULL; | |
6093 | ||
6094 | len = 0; | |
6095 | ||
6096 | if (SvMAGICAL(sv) && !SvREADONLY(sv)) { | |
6097 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6098 | if (mg && mg->mg_ptr) { | |
6099 | cache = (STRLEN *) mg->mg_ptr; | |
c5661c80 | 6100 | if (cache[1] == (STRLEN)*offsetp) { |
7e8c5dac HS |
6101 | /* An exact match. */ |
6102 | *offsetp = cache[0]; | |
6103 | ||
6104 | return; | |
6105 | } | |
c5661c80 | 6106 | else if (cache[1] < (STRLEN)*offsetp) { |
7e8c5dac HS |
6107 | /* We already know part of the way. */ |
6108 | len = cache[0]; | |
6109 | s += cache[1]; | |
7a5fa8a2 | 6110 | /* Let the below loop do the rest. */ |
7e8c5dac HS |
6111 | } |
6112 | else { /* cache[1] > *offsetp */ | |
6113 | /* We already know all of the way, now we may | |
6114 | * be able to walk back. The same assumption | |
6115 | * is made as in S_utf8_mg_pos(), namely that | |
6116 | * walking backward is twice slower than | |
6117 | * walking forward. */ | |
6118 | STRLEN forw = *offsetp; | |
6119 | STRLEN backw = cache[1] - *offsetp; | |
6120 | ||
6121 | if (!(forw < 2 * backw)) { | |
83003860 | 6122 | const U8 *p = s + cache[1]; |
7e8c5dac | 6123 | STRLEN ubackw = 0; |
7a5fa8a2 | 6124 | |
a5b510f2 AE |
6125 | cache[1] -= backw; |
6126 | ||
7e8c5dac HS |
6127 | while (backw--) { |
6128 | p--; | |
0aeb64d0 | 6129 | while (UTF8_IS_CONTINUATION(*p)) { |
7e8c5dac | 6130 | p--; |
0aeb64d0 JH |
6131 | backw--; |
6132 | } | |
7e8c5dac HS |
6133 | ubackw++; |
6134 | } | |
6135 | ||
6136 | cache[0] -= ubackw; | |
0aeb64d0 | 6137 | *offsetp = cache[0]; |
a67d7df9 TS |
6138 | |
6139 | /* Drop the stale "length" cache */ | |
6140 | cache[2] = 0; | |
6141 | cache[3] = 0; | |
6142 | ||
0aeb64d0 | 6143 | return; |
7e8c5dac HS |
6144 | } |
6145 | } | |
6146 | } | |
e23c8137 | 6147 | ASSERT_UTF8_CACHE(cache); |
a0dbb045 | 6148 | } |
7e8c5dac HS |
6149 | |
6150 | while (s < send) { | |
6151 | STRLEN n = 1; | |
6152 | ||
6153 | /* Call utf8n_to_uvchr() to validate the sequence | |
6154 | * (unless a simple non-UTF character) */ | |
6155 | if (!UTF8_IS_INVARIANT(*s)) | |
6156 | utf8n_to_uvchr(s, UTF8SKIP(s), &n, 0); | |
6157 | if (n > 0) { | |
6158 | s += n; | |
6159 | len++; | |
6160 | } | |
6161 | else | |
6162 | break; | |
6163 | } | |
6164 | ||
6165 | if (!SvREADONLY(sv)) { | |
6166 | if (!mg) { | |
6167 | sv_magic(sv, 0, PERL_MAGIC_utf8, 0, 0); | |
6168 | mg = mg_find(sv, PERL_MAGIC_utf8); | |
6169 | } | |
6170 | assert(mg); | |
6171 | ||
6172 | if (!mg->mg_ptr) { | |
979acdb5 | 6173 | Newz(0, cache, PERL_MAGIC_UTF8_CACHESIZE * 2, STRLEN); |
7e8c5dac HS |
6174 | mg->mg_ptr = (char *) cache; |
6175 | } | |
6176 | assert(cache); | |
6177 | ||
6178 | cache[0] = len; | |
6179 | cache[1] = *offsetp; | |
a67d7df9 TS |
6180 | /* Drop the stale "length" cache */ |
6181 | cache[2] = 0; | |
6182 | cache[3] = 0; | |
7e8c5dac HS |
6183 | } |
6184 | ||
6185 | *offsetp = len; | |
a0ed51b3 | 6186 | } |
a0ed51b3 LW |
6187 | return; |
6188 | } | |
6189 | ||
954c1994 GS |
6190 | /* |
6191 | =for apidoc sv_eq | |
6192 | ||
6193 | Returns a boolean indicating whether the strings in the two SVs are | |
645c22ef DM |
6194 | identical. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6195 | coerce its args to strings if necessary. | |
954c1994 GS |
6196 | |
6197 | =cut | |
6198 | */ | |
6199 | ||
79072805 | 6200 | I32 |
e01b9e88 | 6201 | Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6202 | { |
e1ec3a88 | 6203 | const char *pv1; |
463ee0b2 | 6204 | STRLEN cur1; |
e1ec3a88 | 6205 | const char *pv2; |
463ee0b2 | 6206 | STRLEN cur2; |
e01b9e88 | 6207 | I32 eq = 0; |
553e1bcc AT |
6208 | char *tpv = Nullch; |
6209 | SV* svrecode = Nullsv; | |
79072805 | 6210 | |
e01b9e88 | 6211 | if (!sv1) { |
79072805 LW |
6212 | pv1 = ""; |
6213 | cur1 = 0; | |
6214 | } | |
463ee0b2 | 6215 | else |
4d84ee25 | 6216 | pv1 = SvPV_const(sv1, cur1); |
79072805 | 6217 | |
e01b9e88 SC |
6218 | if (!sv2){ |
6219 | pv2 = ""; | |
6220 | cur2 = 0; | |
92d29cee | 6221 | } |
e01b9e88 | 6222 | else |
4d84ee25 | 6223 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 6224 | |
cf48d248 | 6225 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6226 | /* Differing utf8ness. |
6227 | * Do not UTF8size the comparands as a side-effect. */ | |
6228 | if (PL_encoding) { | |
6229 | if (SvUTF8(sv1)) { | |
553e1bcc AT |
6230 | svrecode = newSVpvn(pv2, cur2); |
6231 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6232 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
6233 | } |
6234 | else { | |
553e1bcc AT |
6235 | svrecode = newSVpvn(pv1, cur1); |
6236 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6237 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
6238 | } |
6239 | /* Now both are in UTF-8. */ | |
0a1bd7ac DM |
6240 | if (cur1 != cur2) { |
6241 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6242 | return FALSE; |
0a1bd7ac | 6243 | } |
799ef3cb JH |
6244 | } |
6245 | else { | |
6246 | bool is_utf8 = TRUE; | |
6247 | ||
6248 | if (SvUTF8(sv1)) { | |
6249 | /* sv1 is the UTF-8 one, | |
6250 | * if is equal it must be downgrade-able */ | |
e1ec3a88 | 6251 | char *pv = (char*)bytes_from_utf8((const U8*)pv1, |
799ef3cb JH |
6252 | &cur1, &is_utf8); |
6253 | if (pv != pv1) | |
553e1bcc | 6254 | pv1 = tpv = pv; |
799ef3cb JH |
6255 | } |
6256 | else { | |
6257 | /* sv2 is the UTF-8 one, | |
6258 | * if is equal it must be downgrade-able */ | |
e1ec3a88 | 6259 | char *pv = (char *)bytes_from_utf8((const U8*)pv2, |
799ef3cb JH |
6260 | &cur2, &is_utf8); |
6261 | if (pv != pv2) | |
553e1bcc | 6262 | pv2 = tpv = pv; |
799ef3cb JH |
6263 | } |
6264 | if (is_utf8) { | |
6265 | /* Downgrade not possible - cannot be eq */ | |
bf694877 | 6266 | assert (tpv == 0); |
799ef3cb JH |
6267 | return FALSE; |
6268 | } | |
6269 | } | |
cf48d248 JH |
6270 | } |
6271 | ||
6272 | if (cur1 == cur2) | |
765f542d | 6273 | eq = (pv1 == pv2) || memEQ(pv1, pv2, cur1); |
e01b9e88 | 6274 | |
553e1bcc AT |
6275 | if (svrecode) |
6276 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6277 | |
553e1bcc AT |
6278 | if (tpv) |
6279 | Safefree(tpv); | |
cf48d248 | 6280 | |
e01b9e88 | 6281 | return eq; |
79072805 LW |
6282 | } |
6283 | ||
954c1994 GS |
6284 | /* |
6285 | =for apidoc sv_cmp | |
6286 | ||
6287 | Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the | |
6288 | string in C<sv1> is less than, equal to, or greater than the string in | |
645c22ef DM |
6289 | C<sv2>. Is UTF-8 and 'use bytes' aware, handles get magic, and will |
6290 | coerce its args to strings if necessary. See also C<sv_cmp_locale>. | |
954c1994 GS |
6291 | |
6292 | =cut | |
6293 | */ | |
6294 | ||
79072805 | 6295 | I32 |
e01b9e88 | 6296 | Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2) |
79072805 | 6297 | { |
560a288e | 6298 | STRLEN cur1, cur2; |
e1ec3a88 AL |
6299 | const char *pv1, *pv2; |
6300 | char *tpv = Nullch; | |
cf48d248 | 6301 | I32 cmp; |
553e1bcc | 6302 | SV *svrecode = Nullsv; |
560a288e | 6303 | |
e01b9e88 SC |
6304 | if (!sv1) { |
6305 | pv1 = ""; | |
560a288e GS |
6306 | cur1 = 0; |
6307 | } | |
e01b9e88 | 6308 | else |
4d84ee25 | 6309 | pv1 = SvPV_const(sv1, cur1); |
560a288e | 6310 | |
553e1bcc | 6311 | if (!sv2) { |
e01b9e88 | 6312 | pv2 = ""; |
560a288e GS |
6313 | cur2 = 0; |
6314 | } | |
e01b9e88 | 6315 | else |
4d84ee25 | 6316 | pv2 = SvPV_const(sv2, cur2); |
79072805 | 6317 | |
cf48d248 | 6318 | if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTES) { |
799ef3cb JH |
6319 | /* Differing utf8ness. |
6320 | * Do not UTF8size the comparands as a side-effect. */ | |
cf48d248 | 6321 | if (SvUTF8(sv1)) { |
799ef3cb | 6322 | if (PL_encoding) { |
553e1bcc AT |
6323 | svrecode = newSVpvn(pv2, cur2); |
6324 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6325 | pv2 = SvPV_const(svrecode, cur2); |
799ef3cb JH |
6326 | } |
6327 | else { | |
e1ec3a88 | 6328 | pv2 = tpv = (char*)bytes_to_utf8((const U8*)pv2, &cur2); |
799ef3cb | 6329 | } |
cf48d248 JH |
6330 | } |
6331 | else { | |
799ef3cb | 6332 | if (PL_encoding) { |
553e1bcc AT |
6333 | svrecode = newSVpvn(pv1, cur1); |
6334 | sv_recode_to_utf8(svrecode, PL_encoding); | |
93524f2b | 6335 | pv1 = SvPV_const(svrecode, cur1); |
799ef3cb JH |
6336 | } |
6337 | else { | |
e1ec3a88 | 6338 | pv1 = tpv = (char*)bytes_to_utf8((const U8*)pv1, &cur1); |
799ef3cb | 6339 | } |
cf48d248 JH |
6340 | } |
6341 | } | |
6342 | ||
e01b9e88 | 6343 | if (!cur1) { |
cf48d248 | 6344 | cmp = cur2 ? -1 : 0; |
e01b9e88 | 6345 | } else if (!cur2) { |
cf48d248 JH |
6346 | cmp = 1; |
6347 | } else { | |
e1ec3a88 | 6348 | const I32 retval = memcmp((const void*)pv1, (const void*)pv2, cur1 < cur2 ? cur1 : cur2); |
e01b9e88 SC |
6349 | |
6350 | if (retval) { | |
cf48d248 | 6351 | cmp = retval < 0 ? -1 : 1; |
e01b9e88 | 6352 | } else if (cur1 == cur2) { |
cf48d248 JH |
6353 | cmp = 0; |
6354 | } else { | |
6355 | cmp = cur1 < cur2 ? -1 : 1; | |
e01b9e88 | 6356 | } |
cf48d248 | 6357 | } |
16660edb | 6358 | |
553e1bcc AT |
6359 | if (svrecode) |
6360 | SvREFCNT_dec(svrecode); | |
799ef3cb | 6361 | |
553e1bcc AT |
6362 | if (tpv) |
6363 | Safefree(tpv); | |
cf48d248 JH |
6364 | |
6365 | return cmp; | |
bbce6d69 | 6366 | } |
16660edb | 6367 | |
c461cf8f JH |
6368 | /* |
6369 | =for apidoc sv_cmp_locale | |
6370 | ||
645c22ef DM |
6371 | Compares the strings in two SVs in a locale-aware manner. Is UTF-8 and |
6372 | 'use bytes' aware, handles get magic, and will coerce its args to strings | |
6373 | if necessary. See also C<sv_cmp_locale>. See also C<sv_cmp>. | |
c461cf8f JH |
6374 | |
6375 | =cut | |
6376 | */ | |
6377 | ||
bbce6d69 | 6378 | I32 |
864dbfa3 | 6379 | Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2) |
bbce6d69 | 6380 | { |
36477c24 | 6381 | #ifdef USE_LOCALE_COLLATE |
16660edb | 6382 | |
bbce6d69 | 6383 | char *pv1, *pv2; |
6384 | STRLEN len1, len2; | |
6385 | I32 retval; | |
16660edb | 6386 | |
3280af22 | 6387 | if (PL_collation_standard) |
bbce6d69 | 6388 | goto raw_compare; |
16660edb | 6389 | |
bbce6d69 | 6390 | len1 = 0; |
8ac85365 | 6391 | pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL; |
bbce6d69 | 6392 | len2 = 0; |
8ac85365 | 6393 | pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL; |
16660edb | 6394 | |
bbce6d69 | 6395 | if (!pv1 || !len1) { |
6396 | if (pv2 && len2) | |
6397 | return -1; | |
6398 | else | |
6399 | goto raw_compare; | |
6400 | } | |
6401 | else { | |
6402 | if (!pv2 || !len2) | |
6403 | return 1; | |
6404 | } | |
16660edb | 6405 | |
bbce6d69 | 6406 | retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2); |
16660edb | 6407 | |
bbce6d69 | 6408 | if (retval) |
16660edb | 6409 | return retval < 0 ? -1 : 1; |
6410 | ||
bbce6d69 | 6411 | /* |
6412 | * When the result of collation is equality, that doesn't mean | |
6413 | * that there are no differences -- some locales exclude some | |
6414 | * characters from consideration. So to avoid false equalities, | |
6415 | * we use the raw string as a tiebreaker. | |
6416 | */ | |
16660edb | 6417 | |
bbce6d69 | 6418 | raw_compare: |
6419 | /* FALL THROUGH */ | |
16660edb | 6420 | |
36477c24 | 6421 | #endif /* USE_LOCALE_COLLATE */ |
16660edb | 6422 | |
bbce6d69 | 6423 | return sv_cmp(sv1, sv2); |
6424 | } | |
79072805 | 6425 | |
645c22ef | 6426 | |
36477c24 | 6427 | #ifdef USE_LOCALE_COLLATE |
645c22ef | 6428 | |
7a4c00b4 | 6429 | /* |
645c22ef DM |
6430 | =for apidoc sv_collxfrm |
6431 | ||
6432 | Add Collate Transform magic to an SV if it doesn't already have it. | |
6433 | ||
6434 | Any scalar variable may carry PERL_MAGIC_collxfrm magic that contains the | |
6435 | scalar data of the variable, but transformed to such a format that a normal | |
6436 | memory comparison can be used to compare the data according to the locale | |
6437 | settings. | |
6438 | ||
6439 | =cut | |
6440 | */ | |
6441 | ||
bbce6d69 | 6442 | char * |
864dbfa3 | 6443 | Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp) |
bbce6d69 | 6444 | { |
7a4c00b4 | 6445 | MAGIC *mg; |
16660edb | 6446 | |
14befaf4 | 6447 | mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_collxfrm) : (MAGIC *) NULL; |
3280af22 | 6448 | if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) { |
93524f2b NC |
6449 | const char *s; |
6450 | char *xf; | |
bbce6d69 | 6451 | STRLEN len, xlen; |
6452 | ||
7a4c00b4 | 6453 | if (mg) |
6454 | Safefree(mg->mg_ptr); | |
93524f2b | 6455 | s = SvPV_const(sv, len); |
bbce6d69 | 6456 | if ((xf = mem_collxfrm(s, len, &xlen))) { |
ff0cee69 | 6457 | if (SvREADONLY(sv)) { |
6458 | SAVEFREEPV(xf); | |
6459 | *nxp = xlen; | |
3280af22 | 6460 | return xf + sizeof(PL_collation_ix); |
ff0cee69 | 6461 | } |
7a4c00b4 | 6462 | if (! mg) { |
14befaf4 DM |
6463 | sv_magic(sv, 0, PERL_MAGIC_collxfrm, 0, 0); |
6464 | mg = mg_find(sv, PERL_MAGIC_collxfrm); | |
7a4c00b4 | 6465 | assert(mg); |
bbce6d69 | 6466 | } |
7a4c00b4 | 6467 | mg->mg_ptr = xf; |
565764a8 | 6468 | mg->mg_len = xlen; |
7a4c00b4 | 6469 | } |
6470 | else { | |
ff0cee69 | 6471 | if (mg) { |
6472 | mg->mg_ptr = NULL; | |
565764a8 | 6473 | mg->mg_len = -1; |
ff0cee69 | 6474 | } |
bbce6d69 | 6475 | } |
6476 | } | |
7a4c00b4 | 6477 | if (mg && mg->mg_ptr) { |
565764a8 | 6478 | *nxp = mg->mg_len; |
3280af22 | 6479 | return mg->mg_ptr + sizeof(PL_collation_ix); |
bbce6d69 | 6480 | } |
6481 | else { | |
6482 | *nxp = 0; | |
6483 | return NULL; | |
16660edb | 6484 | } |
79072805 LW |
6485 | } |
6486 | ||
36477c24 | 6487 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 6488 | |
c461cf8f JH |
6489 | /* |
6490 | =for apidoc sv_gets | |
6491 | ||
6492 | Get a line from the filehandle and store it into the SV, optionally | |
6493 | appending to the currently-stored string. | |
6494 | ||
6495 | =cut | |
6496 | */ | |
6497 | ||
79072805 | 6498 | char * |
864dbfa3 | 6499 | Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append) |
79072805 | 6500 | { |
e1ec3a88 | 6501 | const char *rsptr; |
c07a80fd | 6502 | STRLEN rslen; |
6503 | register STDCHAR rslast; | |
6504 | register STDCHAR *bp; | |
6505 | register I32 cnt; | |
9c5ffd7c | 6506 | I32 i = 0; |
8bfdd7d9 | 6507 | I32 rspara = 0; |
e311fd51 | 6508 | I32 recsize; |
c07a80fd | 6509 | |
bc44a8a2 NC |
6510 | if (SvTHINKFIRST(sv)) |
6511 | sv_force_normal_flags(sv, append ? 0 : SV_COW_DROP_PV); | |
765f542d NC |
6512 | /* XXX. If you make this PVIV, then copy on write can copy scalars read |
6513 | from <>. | |
6514 | However, perlbench says it's slower, because the existing swipe code | |
6515 | is faster than copy on write. | |
6516 | Swings and roundabouts. */ | |
862a34c6 | 6517 | SvUPGRADE(sv, SVt_PV); |
99491443 | 6518 | |
ff68c719 | 6519 | SvSCREAM_off(sv); |
efd8b2ba AE |
6520 | |
6521 | if (append) { | |
6522 | if (PerlIO_isutf8(fp)) { | |
6523 | if (!SvUTF8(sv)) { | |
6524 | sv_utf8_upgrade_nomg(sv); | |
6525 | sv_pos_u2b(sv,&append,0); | |
6526 | } | |
6527 | } else if (SvUTF8(sv)) { | |
1b6737cc | 6528 | SV * const tsv = NEWSV(0,0); |
efd8b2ba AE |
6529 | sv_gets(tsv, fp, 0); |
6530 | sv_utf8_upgrade_nomg(tsv); | |
6531 | SvCUR_set(sv,append); | |
6532 | sv_catsv(sv,tsv); | |
6533 | sv_free(tsv); | |
6534 | goto return_string_or_null; | |
6535 | } | |
6536 | } | |
6537 | ||
6538 | SvPOK_only(sv); | |
6539 | if (PerlIO_isutf8(fp)) | |
6540 | SvUTF8_on(sv); | |
c07a80fd | 6541 | |
923e4eb5 | 6542 | if (IN_PERL_COMPILETIME) { |
8bfdd7d9 HS |
6543 | /* we always read code in line mode */ |
6544 | rsptr = "\n"; | |
6545 | rslen = 1; | |
6546 | } | |
6547 | else if (RsSNARF(PL_rs)) { | |
7a5fa8a2 NIS |
6548 | /* If it is a regular disk file use size from stat() as estimate |
6549 | of amount we are going to read - may result in malloc-ing | |
6550 | more memory than we realy need if layers bellow reduce | |
e468d35b NIS |
6551 | size we read (e.g. CRLF or a gzip layer) |
6552 | */ | |
e311fd51 | 6553 | Stat_t st; |
e468d35b | 6554 | if (!PerlLIO_fstat(PerlIO_fileno(fp), &st) && S_ISREG(st.st_mode)) { |
f54cb97a | 6555 | const Off_t offset = PerlIO_tell(fp); |
58f1856e | 6556 | if (offset != (Off_t) -1 && st.st_size + append > offset) { |
e468d35b NIS |
6557 | (void) SvGROW(sv, (STRLEN)((st.st_size - offset) + append + 1)); |
6558 | } | |
6559 | } | |
c07a80fd | 6560 | rsptr = NULL; |
6561 | rslen = 0; | |
6562 | } | |
3280af22 | 6563 | else if (RsRECORD(PL_rs)) { |
e311fd51 | 6564 | I32 bytesread; |
5b2b9c68 HM |
6565 | char *buffer; |
6566 | ||
6567 | /* Grab the size of the record we're getting */ | |
3280af22 | 6568 | recsize = SvIV(SvRV(PL_rs)); |
e311fd51 | 6569 | buffer = SvGROW(sv, (STRLEN)(recsize + append + 1)) + append; |
5b2b9c68 HM |
6570 | /* Go yank in */ |
6571 | #ifdef VMS | |
6572 | /* VMS wants read instead of fread, because fread doesn't respect */ | |
6573 | /* RMS record boundaries. This is not necessarily a good thing to be */ | |
e468d35b NIS |
6574 | /* doing, but we've got no other real choice - except avoid stdio |
6575 | as implementation - perhaps write a :vms layer ? | |
6576 | */ | |
5b2b9c68 HM |
6577 | bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize); |
6578 | #else | |
6579 | bytesread = PerlIO_read(fp, buffer, recsize); | |
6580 | #endif | |
27e6ca2d AE |
6581 | if (bytesread < 0) |
6582 | bytesread = 0; | |
e311fd51 | 6583 | SvCUR_set(sv, bytesread += append); |
e670df4e | 6584 | buffer[bytesread] = '\0'; |
efd8b2ba | 6585 | goto return_string_or_null; |
5b2b9c68 | 6586 | } |
3280af22 | 6587 | else if (RsPARA(PL_rs)) { |
c07a80fd | 6588 | rsptr = "\n\n"; |
6589 | rslen = 2; | |
8bfdd7d9 | 6590 | rspara = 1; |
c07a80fd | 6591 | } |
7d59b7e4 NIS |
6592 | else { |
6593 | /* Get $/ i.e. PL_rs into same encoding as stream wants */ | |
6594 | if (PerlIO_isutf8(fp)) { | |
6595 | rsptr = SvPVutf8(PL_rs, rslen); | |
6596 | } | |
6597 | else { | |
6598 | if (SvUTF8(PL_rs)) { | |
6599 | if (!sv_utf8_downgrade(PL_rs, TRUE)) { | |
6600 | Perl_croak(aTHX_ "Wide character in $/"); | |
6601 | } | |
6602 | } | |
93524f2b | 6603 | rsptr = SvPV_const(PL_rs, rslen); |
7d59b7e4 NIS |
6604 | } |
6605 | } | |
6606 | ||
c07a80fd | 6607 | rslast = rslen ? rsptr[rslen - 1] : '\0'; |
6608 | ||
8bfdd7d9 | 6609 | if (rspara) { /* have to do this both before and after */ |
79072805 | 6610 | do { /* to make sure file boundaries work right */ |
760ac839 | 6611 | if (PerlIO_eof(fp)) |
a0d0e21e | 6612 | return 0; |
760ac839 | 6613 | i = PerlIO_getc(fp); |
79072805 | 6614 | if (i != '\n') { |
a0d0e21e LW |
6615 | if (i == -1) |
6616 | return 0; | |
760ac839 | 6617 | PerlIO_ungetc(fp,i); |
79072805 LW |
6618 | break; |
6619 | } | |
6620 | } while (i != EOF); | |
6621 | } | |
c07a80fd | 6622 | |
760ac839 LW |
6623 | /* See if we know enough about I/O mechanism to cheat it ! */ |
6624 | ||
6625 | /* This used to be #ifdef test - it is made run-time test for ease | |
1c846c1f | 6626 | of abstracting out stdio interface. One call should be cheap |
760ac839 LW |
6627 | enough here - and may even be a macro allowing compile |
6628 | time optimization. | |
6629 | */ | |
6630 | ||
6631 | if (PerlIO_fast_gets(fp)) { | |
6632 | ||
6633 | /* | |
6634 | * We're going to steal some values from the stdio struct | |
6635 | * and put EVERYTHING in the innermost loop into registers. | |
6636 | */ | |
6637 | register STDCHAR *ptr; | |
6638 | STRLEN bpx; | |
6639 | I32 shortbuffered; | |
6640 | ||
16660edb | 6641 | #if defined(VMS) && defined(PERLIO_IS_STDIO) |
6642 | /* An ungetc()d char is handled separately from the regular | |
6643 | * buffer, so we getc() it back out and stuff it in the buffer. | |
6644 | */ | |
6645 | i = PerlIO_getc(fp); | |
6646 | if (i == EOF) return 0; | |
6647 | *(--((*fp)->_ptr)) = (unsigned char) i; | |
6648 | (*fp)->_cnt++; | |
6649 | #endif | |
c07a80fd | 6650 | |
c2960299 | 6651 | /* Here is some breathtakingly efficient cheating */ |
c07a80fd | 6652 | |
a20bf0c3 | 6653 | cnt = PerlIO_get_cnt(fp); /* get count into register */ |
e468d35b | 6654 | /* make sure we have the room */ |
7a5fa8a2 | 6655 | if ((I32)(SvLEN(sv) - append) <= cnt + 1) { |
e468d35b | 6656 | /* Not room for all of it |
7a5fa8a2 | 6657 | if we are looking for a separator and room for some |
e468d35b NIS |
6658 | */ |
6659 | if (rslen && cnt > 80 && (I32)SvLEN(sv) > append) { | |
7a5fa8a2 | 6660 | /* just process what we have room for */ |
79072805 LW |
6661 | shortbuffered = cnt - SvLEN(sv) + append + 1; |
6662 | cnt -= shortbuffered; | |
6663 | } | |
6664 | else { | |
6665 | shortbuffered = 0; | |
bbce6d69 | 6666 | /* remember that cnt can be negative */ |
eb160463 | 6667 | SvGROW(sv, (STRLEN)(append + (cnt <= 0 ? 2 : (cnt + 1)))); |
79072805 LW |
6668 | } |
6669 | } | |
7a5fa8a2 | 6670 | else |
79072805 | 6671 | shortbuffered = 0; |
3f7c398e | 6672 | bp = (STDCHAR*)SvPVX_const(sv) + append; /* move these two too to registers */ |
a20bf0c3 | 6673 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); |
16660edb | 6674 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6675 | "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
16660edb | 6676 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
ba7abf9d | 6677 | "Screamer: entering: PerlIO * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6678 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6679 | PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0))); |
79072805 LW |
6680 | for (;;) { |
6681 | screamer: | |
93a17b20 | 6682 | if (cnt > 0) { |
c07a80fd | 6683 | if (rslen) { |
760ac839 LW |
6684 | while (cnt > 0) { /* this | eat */ |
6685 | cnt--; | |
c07a80fd | 6686 | if ((*bp++ = *ptr++) == rslast) /* really | dust */ |
6687 | goto thats_all_folks; /* screams | sed :-) */ | |
6688 | } | |
6689 | } | |
6690 | else { | |
1c846c1f NIS |
6691 | Copy(ptr, bp, cnt, char); /* this | eat */ |
6692 | bp += cnt; /* screams | dust */ | |
c07a80fd | 6693 | ptr += cnt; /* louder | sed :-) */ |
a5f75d66 | 6694 | cnt = 0; |
93a17b20 | 6695 | } |
79072805 LW |
6696 | } |
6697 | ||
748a9306 | 6698 | if (shortbuffered) { /* oh well, must extend */ |
79072805 LW |
6699 | cnt = shortbuffered; |
6700 | shortbuffered = 0; | |
3f7c398e | 6701 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
6702 | SvCUR_set(sv, bpx); |
6703 | SvGROW(sv, SvLEN(sv) + append + cnt + 2); | |
3f7c398e | 6704 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
79072805 LW |
6705 | continue; |
6706 | } | |
6707 | ||
16660edb | 6708 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 GS |
6709 | "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n", |
6710 | PTR2UV(ptr),(long)cnt)); | |
cc00df79 | 6711 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* deregisterize cnt and ptr */ |
ba7abf9d | 6712 | #if 0 |
16660edb | 6713 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6714 | "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6715 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6716 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6717 | #endif |
1c846c1f | 6718 | /* This used to call 'filbuf' in stdio form, but as that behaves like |
774d564b | 6719 | getc when cnt <= 0 we use PerlIO_getc here to avoid introducing |
6720 | another abstraction. */ | |
760ac839 | 6721 | i = PerlIO_getc(fp); /* get more characters */ |
ba7abf9d | 6722 | #if 0 |
16660edb | 6723 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6724 | "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6725 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6726 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
ba7abf9d | 6727 | #endif |
a20bf0c3 JH |
6728 | cnt = PerlIO_get_cnt(fp); |
6729 | ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */ | |
16660edb | 6730 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6731 | "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
79072805 | 6732 | |
748a9306 LW |
6733 | if (i == EOF) /* all done for ever? */ |
6734 | goto thats_really_all_folks; | |
6735 | ||
3f7c398e | 6736 | bpx = bp - (STDCHAR*)SvPVX_const(sv); /* box up before relocation */ |
79072805 LW |
6737 | SvCUR_set(sv, bpx); |
6738 | SvGROW(sv, bpx + cnt + 2); | |
3f7c398e | 6739 | bp = (STDCHAR*)SvPVX_const(sv) + bpx; /* unbox after relocation */ |
c07a80fd | 6740 | |
eb160463 | 6741 | *bp++ = (STDCHAR)i; /* store character from PerlIO_getc */ |
79072805 | 6742 | |
c07a80fd | 6743 | if (rslen && (STDCHAR)i == rslast) /* all done for now? */ |
79072805 | 6744 | goto thats_all_folks; |
79072805 LW |
6745 | } |
6746 | ||
6747 | thats_all_folks: | |
3f7c398e | 6748 | if ((rslen > 1 && (STRLEN)(bp - (STDCHAR*)SvPVX_const(sv)) < rslen) || |
36477c24 | 6749 | memNE((char*)bp - rslen, rsptr, rslen)) |
760ac839 | 6750 | goto screamer; /* go back to the fray */ |
79072805 LW |
6751 | thats_really_all_folks: |
6752 | if (shortbuffered) | |
6753 | cnt += shortbuffered; | |
16660edb | 6754 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6755 | "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt)); |
cc00df79 | 6756 | PerlIO_set_ptrcnt(fp, (STDCHAR*)ptr, cnt); /* put these back or we're in trouble */ |
16660edb | 6757 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1d7c1841 | 6758 | "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n", |
1c846c1f | 6759 | PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp), |
1d7c1841 | 6760 | PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0))); |
79072805 | 6761 | *bp = '\0'; |
3f7c398e | 6762 | SvCUR_set(sv, bp - (STDCHAR*)SvPVX_const(sv)); /* set length */ |
16660edb | 6763 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
fb73857a | 6764 | "Screamer: done, len=%ld, string=|%.*s|\n", |
3f7c398e | 6765 | (long)SvCUR(sv),(int)SvCUR(sv),SvPVX_const(sv))); |
760ac839 LW |
6766 | } |
6767 | else | |
79072805 | 6768 | { |
6edd2cd5 | 6769 | /*The big, slow, and stupid way. */ |
27da23d5 | 6770 | #ifdef USE_HEAP_INSTEAD_OF_STACK /* Even slower way. */ |
6edd2cd5 JH |
6771 | STDCHAR *buf = 0; |
6772 | New(0, buf, 8192, STDCHAR); | |
6773 | assert(buf); | |
4d2c4e07 | 6774 | #else |
6edd2cd5 | 6775 | STDCHAR buf[8192]; |
4d2c4e07 | 6776 | #endif |
79072805 | 6777 | |
760ac839 | 6778 | screamer2: |
c07a80fd | 6779 | if (rslen) { |
6867be6d | 6780 | const register STDCHAR *bpe = buf + sizeof(buf); |
760ac839 | 6781 | bp = buf; |
eb160463 | 6782 | while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = (STDCHAR)i) != rslast && bp < bpe) |
760ac839 LW |
6783 | ; /* keep reading */ |
6784 | cnt = bp - buf; | |
c07a80fd | 6785 | } |
6786 | else { | |
760ac839 | 6787 | cnt = PerlIO_read(fp,(char*)buf, sizeof(buf)); |
16660edb | 6788 | /* Accomodate broken VAXC compiler, which applies U8 cast to |
6789 | * both args of ?: operator, causing EOF to change into 255 | |
6790 | */ | |
37be0adf | 6791 | if (cnt > 0) |
cbe9e203 JH |
6792 | i = (U8)buf[cnt - 1]; |
6793 | else | |
37be0adf | 6794 | i = EOF; |
c07a80fd | 6795 | } |
79072805 | 6796 | |
cbe9e203 JH |
6797 | if (cnt < 0) |
6798 | cnt = 0; /* we do need to re-set the sv even when cnt <= 0 */ | |
6799 | if (append) | |
6800 | sv_catpvn(sv, (char *) buf, cnt); | |
6801 | else | |
6802 | sv_setpvn(sv, (char *) buf, cnt); | |
c07a80fd | 6803 | |
6804 | if (i != EOF && /* joy */ | |
6805 | (!rslen || | |
6806 | SvCUR(sv) < rslen || | |
3f7c398e | 6807 | memNE(SvPVX_const(sv) + SvCUR(sv) - rslen, rsptr, rslen))) |
79072805 LW |
6808 | { |
6809 | append = -1; | |
63e4d877 CS |
6810 | /* |
6811 | * If we're reading from a TTY and we get a short read, | |
6812 | * indicating that the user hit his EOF character, we need | |
6813 | * to notice it now, because if we try to read from the TTY | |
6814 | * again, the EOF condition will disappear. | |
6815 | * | |
6816 | * The comparison of cnt to sizeof(buf) is an optimization | |
6817 | * that prevents unnecessary calls to feof(). | |
6818 | * | |
6819 | * - jik 9/25/96 | |
6820 | */ | |
6821 | if (!(cnt < sizeof(buf) && PerlIO_eof(fp))) | |
6822 | goto screamer2; | |
79072805 | 6823 | } |
6edd2cd5 | 6824 | |
27da23d5 | 6825 | #ifdef USE_HEAP_INSTEAD_OF_STACK |
6edd2cd5 JH |
6826 | Safefree(buf); |
6827 | #endif | |
79072805 LW |
6828 | } |
6829 | ||
8bfdd7d9 | 6830 | if (rspara) { /* have to do this both before and after */ |
c07a80fd | 6831 | while (i != EOF) { /* to make sure file boundaries work right */ |
760ac839 | 6832 | i = PerlIO_getc(fp); |
79072805 | 6833 | if (i != '\n') { |
760ac839 | 6834 | PerlIO_ungetc(fp,i); |
79072805 LW |
6835 | break; |
6836 | } | |
6837 | } | |
6838 | } | |
c07a80fd | 6839 | |
efd8b2ba | 6840 | return_string_or_null: |
c07a80fd | 6841 | return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch; |
79072805 LW |
6842 | } |
6843 | ||
954c1994 GS |
6844 | /* |
6845 | =for apidoc sv_inc | |
6846 | ||
645c22ef DM |
6847 | Auto-increment of the value in the SV, doing string to numeric conversion |
6848 | if necessary. Handles 'get' magic. | |
954c1994 GS |
6849 | |
6850 | =cut | |
6851 | */ | |
6852 | ||
79072805 | 6853 | void |
864dbfa3 | 6854 | Perl_sv_inc(pTHX_ register SV *sv) |
79072805 LW |
6855 | { |
6856 | register char *d; | |
463ee0b2 | 6857 | int flags; |
79072805 LW |
6858 | |
6859 | if (!sv) | |
6860 | return; | |
b23a5f78 GB |
6861 | if (SvGMAGICAL(sv)) |
6862 | mg_get(sv); | |
ed6116ce | 6863 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
6864 | if (SvIsCOW(sv)) |
6865 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 6866 | if (SvREADONLY(sv)) { |
923e4eb5 | 6867 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 6868 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 6869 | } |
a0d0e21e | 6870 | if (SvROK(sv)) { |
b5be31e9 | 6871 | IV i; |
9e7bc3e8 JD |
6872 | if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) |
6873 | return; | |
56431972 | 6874 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
6875 | sv_unref(sv); |
6876 | sv_setiv(sv, i); | |
a0d0e21e | 6877 | } |
ed6116ce | 6878 | } |
8990e307 | 6879 | flags = SvFLAGS(sv); |
28e5dec8 JH |
6880 | if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) { |
6881 | /* It's (privately or publicly) a float, but not tested as an | |
6882 | integer, so test it to see. */ | |
d460ef45 | 6883 | (void) SvIV(sv); |
28e5dec8 JH |
6884 | flags = SvFLAGS(sv); |
6885 | } | |
6886 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { | |
6887 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 6888 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 6889 | oops_its_int: |
59d8ce62 | 6890 | #endif |
25da4f38 IZ |
6891 | if (SvIsUV(sv)) { |
6892 | if (SvUVX(sv) == UV_MAX) | |
a1e868e7 | 6893 | sv_setnv(sv, UV_MAX_P1); |
25da4f38 IZ |
6894 | else |
6895 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 6896 | SvUV_set(sv, SvUVX(sv) + 1); |
25da4f38 IZ |
6897 | } else { |
6898 | if (SvIVX(sv) == IV_MAX) | |
28e5dec8 | 6899 | sv_setuv(sv, (UV)IV_MAX + 1); |
25da4f38 IZ |
6900 | else { |
6901 | (void)SvIOK_only(sv); | |
45977657 | 6902 | SvIV_set(sv, SvIVX(sv) + 1); |
1c846c1f | 6903 | } |
55497cff | 6904 | } |
79072805 LW |
6905 | return; |
6906 | } | |
28e5dec8 JH |
6907 | if (flags & SVp_NOK) { |
6908 | (void)SvNOK_only(sv); | |
9d6ce603 | 6909 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6910 | return; |
6911 | } | |
6912 | ||
3f7c398e | 6913 | if (!(flags & SVp_POK) || !*SvPVX_const(sv)) { |
28e5dec8 | 6914 | if ((flags & SVTYPEMASK) < SVt_PVIV) |
f5282e15 | 6915 | sv_upgrade(sv, ((flags & SVTYPEMASK) > SVt_IV ? SVt_PVIV : SVt_IV)); |
28e5dec8 | 6916 | (void)SvIOK_only(sv); |
45977657 | 6917 | SvIV_set(sv, 1); |
79072805 LW |
6918 | return; |
6919 | } | |
463ee0b2 | 6920 | d = SvPVX(sv); |
79072805 LW |
6921 | while (isALPHA(*d)) d++; |
6922 | while (isDIGIT(*d)) d++; | |
6923 | if (*d) { | |
28e5dec8 | 6924 | #ifdef PERL_PRESERVE_IVUV |
d1be9408 | 6925 | /* Got to punt this as an integer if needs be, but we don't issue |
28e5dec8 JH |
6926 | warnings. Probably ought to make the sv_iv_please() that does |
6927 | the conversion if possible, and silently. */ | |
504618e9 | 6928 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
6929 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
6930 | /* Need to try really hard to see if it's an integer. | |
6931 | 9.22337203685478e+18 is an integer. | |
6932 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
6933 | so $a="9.22337203685478e+18"; $a+0; $a++ | |
6934 | needs to be the same as $a="9.22337203685478e+18"; $a++ | |
6935 | or we go insane. */ | |
d460ef45 | 6936 | |
28e5dec8 JH |
6937 | (void) sv_2iv(sv); |
6938 | if (SvIOK(sv)) | |
6939 | goto oops_its_int; | |
6940 | ||
6941 | /* sv_2iv *should* have made this an NV */ | |
6942 | if (flags & SVp_NOK) { | |
6943 | (void)SvNOK_only(sv); | |
9d6ce603 | 6944 | SvNV_set(sv, SvNVX(sv) + 1.0); |
28e5dec8 JH |
6945 | return; |
6946 | } | |
6947 | /* I don't think we can get here. Maybe I should assert this | |
6948 | And if we do get here I suspect that sv_setnv will croak. NWC | |
6949 | Fall through. */ | |
6950 | #if defined(USE_LONG_DOUBLE) | |
6951 | 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 | 6952 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 6953 | #else |
1779d84d | 6954 | 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 | 6955 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
6956 | #endif |
6957 | } | |
6958 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 6959 | sv_setnv(sv,Atof(SvPVX_const(sv)) + 1.0); |
79072805 LW |
6960 | return; |
6961 | } | |
6962 | d--; | |
3f7c398e | 6963 | while (d >= SvPVX_const(sv)) { |
79072805 LW |
6964 | if (isDIGIT(*d)) { |
6965 | if (++*d <= '9') | |
6966 | return; | |
6967 | *(d--) = '0'; | |
6968 | } | |
6969 | else { | |
9d116dd7 JH |
6970 | #ifdef EBCDIC |
6971 | /* MKS: The original code here died if letters weren't consecutive. | |
6972 | * at least it didn't have to worry about non-C locales. The | |
6973 | * new code assumes that ('z'-'a')==('Z'-'A'), letters are | |
1c846c1f | 6974 | * arranged in order (although not consecutively) and that only |
9d116dd7 JH |
6975 | * [A-Za-z] are accepted by isALPHA in the C locale. |
6976 | */ | |
6977 | if (*d != 'z' && *d != 'Z') { | |
6978 | do { ++*d; } while (!isALPHA(*d)); | |
6979 | return; | |
6980 | } | |
6981 | *(d--) -= 'z' - 'a'; | |
6982 | #else | |
79072805 LW |
6983 | ++*d; |
6984 | if (isALPHA(*d)) | |
6985 | return; | |
6986 | *(d--) -= 'z' - 'a' + 1; | |
9d116dd7 | 6987 | #endif |
79072805 LW |
6988 | } |
6989 | } | |
6990 | /* oh,oh, the number grew */ | |
6991 | SvGROW(sv, SvCUR(sv) + 2); | |
b162af07 | 6992 | SvCUR_set(sv, SvCUR(sv) + 1); |
3f7c398e | 6993 | for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX_const(sv); d--) |
79072805 LW |
6994 | *d = d[-1]; |
6995 | if (isDIGIT(d[1])) | |
6996 | *d = '1'; | |
6997 | else | |
6998 | *d = d[1]; | |
6999 | } | |
7000 | ||
954c1994 GS |
7001 | /* |
7002 | =for apidoc sv_dec | |
7003 | ||
645c22ef DM |
7004 | Auto-decrement of the value in the SV, doing string to numeric conversion |
7005 | if necessary. Handles 'get' magic. | |
954c1994 GS |
7006 | |
7007 | =cut | |
7008 | */ | |
7009 | ||
79072805 | 7010 | void |
864dbfa3 | 7011 | Perl_sv_dec(pTHX_ register SV *sv) |
79072805 | 7012 | { |
463ee0b2 LW |
7013 | int flags; |
7014 | ||
79072805 LW |
7015 | if (!sv) |
7016 | return; | |
b23a5f78 GB |
7017 | if (SvGMAGICAL(sv)) |
7018 | mg_get(sv); | |
ed6116ce | 7019 | if (SvTHINKFIRST(sv)) { |
765f542d NC |
7020 | if (SvIsCOW(sv)) |
7021 | sv_force_normal_flags(sv, 0); | |
0f15f207 | 7022 | if (SvREADONLY(sv)) { |
923e4eb5 | 7023 | if (IN_PERL_RUNTIME) |
cea2e8a9 | 7024 | Perl_croak(aTHX_ PL_no_modify); |
0f15f207 | 7025 | } |
a0d0e21e | 7026 | if (SvROK(sv)) { |
b5be31e9 | 7027 | IV i; |
9e7bc3e8 JD |
7028 | if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) |
7029 | return; | |
56431972 | 7030 | i = PTR2IV(SvRV(sv)); |
b5be31e9 SM |
7031 | sv_unref(sv); |
7032 | sv_setiv(sv, i); | |
a0d0e21e | 7033 | } |
ed6116ce | 7034 | } |
28e5dec8 JH |
7035 | /* Unlike sv_inc we don't have to worry about string-never-numbers |
7036 | and keeping them magic. But we mustn't warn on punting */ | |
8990e307 | 7037 | flags = SvFLAGS(sv); |
28e5dec8 JH |
7038 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
7039 | /* It's publicly an integer, or privately an integer-not-float */ | |
59d8ce62 | 7040 | #ifdef PERL_PRESERVE_IVUV |
28e5dec8 | 7041 | oops_its_int: |
59d8ce62 | 7042 | #endif |
25da4f38 IZ |
7043 | if (SvIsUV(sv)) { |
7044 | if (SvUVX(sv) == 0) { | |
7045 | (void)SvIOK_only(sv); | |
45977657 | 7046 | SvIV_set(sv, -1); |
25da4f38 IZ |
7047 | } |
7048 | else { | |
7049 | (void)SvIOK_only_UV(sv); | |
607fa7f2 | 7050 | SvUV_set(sv, SvUVX(sv) + 1); |
1c846c1f | 7051 | } |
25da4f38 IZ |
7052 | } else { |
7053 | if (SvIVX(sv) == IV_MIN) | |
65202027 | 7054 | sv_setnv(sv, (NV)IV_MIN - 1.0); |
25da4f38 IZ |
7055 | else { |
7056 | (void)SvIOK_only(sv); | |
45977657 | 7057 | SvIV_set(sv, SvIVX(sv) - 1); |
1c846c1f | 7058 | } |
55497cff | 7059 | } |
7060 | return; | |
7061 | } | |
28e5dec8 | 7062 | if (flags & SVp_NOK) { |
9d6ce603 | 7063 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
7064 | (void)SvNOK_only(sv); |
7065 | return; | |
7066 | } | |
8990e307 | 7067 | if (!(flags & SVp_POK)) { |
4633a7c4 LW |
7068 | if ((flags & SVTYPEMASK) < SVt_PVNV) |
7069 | sv_upgrade(sv, SVt_NV); | |
f599b64b | 7070 | SvNV_set(sv, 1.0); |
a0d0e21e | 7071 | (void)SvNOK_only(sv); |
79072805 LW |
7072 | return; |
7073 | } | |
28e5dec8 JH |
7074 | #ifdef PERL_PRESERVE_IVUV |
7075 | { | |
504618e9 | 7076 | const int numtype = grok_number(SvPVX_const(sv), SvCUR(sv), NULL); |
28e5dec8 JH |
7077 | if (numtype && !(numtype & IS_NUMBER_INFINITY)) { |
7078 | /* Need to try really hard to see if it's an integer. | |
7079 | 9.22337203685478e+18 is an integer. | |
7080 | but "9.22337203685478e+18" + 0 is UV=9223372036854779904 | |
7081 | so $a="9.22337203685478e+18"; $a+0; $a-- | |
7082 | needs to be the same as $a="9.22337203685478e+18"; $a-- | |
7083 | or we go insane. */ | |
d460ef45 | 7084 | |
28e5dec8 JH |
7085 | (void) sv_2iv(sv); |
7086 | if (SvIOK(sv)) | |
7087 | goto oops_its_int; | |
7088 | ||
7089 | /* sv_2iv *should* have made this an NV */ | |
7090 | if (flags & SVp_NOK) { | |
7091 | (void)SvNOK_only(sv); | |
9d6ce603 | 7092 | SvNV_set(sv, SvNVX(sv) - 1.0); |
28e5dec8 JH |
7093 | return; |
7094 | } | |
7095 | /* I don't think we can get here. Maybe I should assert this | |
7096 | And if we do get here I suspect that sv_setnv will croak. NWC | |
7097 | Fall through. */ | |
7098 | #if defined(USE_LONG_DOUBLE) | |
7099 | 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 | 7100 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 | 7101 | #else |
1779d84d | 7102 | 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 | 7103 | SvPVX_const(sv), SvIVX(sv), SvNVX(sv))); |
28e5dec8 JH |
7104 | #endif |
7105 | } | |
7106 | } | |
7107 | #endif /* PERL_PRESERVE_IVUV */ | |
3f7c398e | 7108 | sv_setnv(sv,Atof(SvPVX_const(sv)) - 1.0); /* punt */ |
79072805 LW |
7109 | } |
7110 | ||
954c1994 GS |
7111 | /* |
7112 | =for apidoc sv_mortalcopy | |
7113 | ||
645c22ef | 7114 | Creates a new SV which is a copy of the original SV (using C<sv_setsv>). |
d4236ebc DM |
7115 | The new SV is marked as mortal. It will be destroyed "soon", either by an |
7116 | explicit call to FREETMPS, or by an implicit call at places such as | |
7117 | statement boundaries. See also C<sv_newmortal> and C<sv_2mortal>. | |
954c1994 GS |
7118 | |
7119 | =cut | |
7120 | */ | |
7121 | ||
79072805 LW |
7122 | /* Make a string that will exist for the duration of the expression |
7123 | * evaluation. Actually, it may have to last longer than that, but | |
7124 | * hopefully we won't free it until it has been assigned to a | |
7125 | * permanent location. */ | |
7126 | ||
7127 | SV * | |
864dbfa3 | 7128 | Perl_sv_mortalcopy(pTHX_ SV *oldstr) |
79072805 | 7129 | { |
463ee0b2 | 7130 | register SV *sv; |
b881518d | 7131 | |
4561caa4 | 7132 | new_SV(sv); |
79072805 | 7133 | sv_setsv(sv,oldstr); |
677b06e3 GS |
7134 | EXTEND_MORTAL(1); |
7135 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 LW |
7136 | SvTEMP_on(sv); |
7137 | return sv; | |
7138 | } | |
7139 | ||
954c1994 GS |
7140 | /* |
7141 | =for apidoc sv_newmortal | |
7142 | ||
645c22ef | 7143 | Creates a new null SV which is mortal. The reference count of the SV is |
d4236ebc DM |
7144 | set to 1. It will be destroyed "soon", either by an explicit call to |
7145 | FREETMPS, or by an implicit call at places such as statement boundaries. | |
7146 | See also C<sv_mortalcopy> and C<sv_2mortal>. | |
954c1994 GS |
7147 | |
7148 | =cut | |
7149 | */ | |
7150 | ||
8990e307 | 7151 | SV * |
864dbfa3 | 7152 | Perl_sv_newmortal(pTHX) |
8990e307 LW |
7153 | { |
7154 | register SV *sv; | |
7155 | ||
4561caa4 | 7156 | new_SV(sv); |
8990e307 | 7157 | SvFLAGS(sv) = SVs_TEMP; |
677b06e3 GS |
7158 | EXTEND_MORTAL(1); |
7159 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
79072805 LW |
7160 | return sv; |
7161 | } | |
7162 | ||
954c1994 GS |
7163 | /* |
7164 | =for apidoc sv_2mortal | |
7165 | ||
d4236ebc DM |
7166 | Marks an existing SV as mortal. The SV will be destroyed "soon", either |
7167 | by an explicit call to FREETMPS, or by an implicit call at places such as | |
37d2ac18 NC |
7168 | statement boundaries. SvTEMP() is turned on which means that the SV's |
7169 | string buffer can be "stolen" if this SV is copied. See also C<sv_newmortal> | |
7170 | and C<sv_mortalcopy>. | |
954c1994 GS |
7171 | |
7172 | =cut | |
7173 | */ | |
7174 | ||
79072805 | 7175 | SV * |
864dbfa3 | 7176 | Perl_sv_2mortal(pTHX_ register SV *sv) |
79072805 | 7177 | { |
27da23d5 | 7178 | dVAR; |
79072805 LW |
7179 | if (!sv) |
7180 | return sv; | |
d689ffdd | 7181 | if (SvREADONLY(sv) && SvIMMORTAL(sv)) |
11162842 | 7182 | return sv; |
677b06e3 GS |
7183 | EXTEND_MORTAL(1); |
7184 | PL_tmps_stack[++PL_tmps_ix] = sv; | |
8990e307 | 7185 | SvTEMP_on(sv); |
79072805 LW |
7186 | return sv; |
7187 | } | |
7188 | ||
954c1994 GS |
7189 | /* |
7190 | =for apidoc newSVpv | |
7191 | ||
7192 | Creates a new SV and copies a string into it. The reference count for the | |
7193 | SV is set to 1. If C<len> is zero, Perl will compute the length using | |
7194 | strlen(). For efficiency, consider using C<newSVpvn> instead. | |
7195 | ||
7196 | =cut | |
7197 | */ | |
7198 | ||
79072805 | 7199 | SV * |
864dbfa3 | 7200 | Perl_newSVpv(pTHX_ const char *s, STRLEN len) |
79072805 | 7201 | { |
463ee0b2 | 7202 | register SV *sv; |
79072805 | 7203 | |
4561caa4 | 7204 | new_SV(sv); |
616d8c9c | 7205 | sv_setpvn(sv,s,len ? len : strlen(s)); |
79072805 LW |
7206 | return sv; |
7207 | } | |
7208 | ||
954c1994 GS |
7209 | /* |
7210 | =for apidoc newSVpvn | |
7211 | ||
7212 | Creates a new SV and copies a string into it. The reference count for the | |
1c846c1f | 7213 | SV is set to 1. Note that if C<len> is zero, Perl will create a zero length |
954c1994 | 7214 | string. You are responsible for ensuring that the source string is at least |
9e09f5f2 | 7215 | C<len> bytes long. If the C<s> argument is NULL the new SV will be undefined. |
954c1994 GS |
7216 | |
7217 | =cut | |
7218 | */ | |
7219 | ||
9da1e3b5 | 7220 | SV * |
864dbfa3 | 7221 | Perl_newSVpvn(pTHX_ const char *s, STRLEN len) |
9da1e3b5 MUN |
7222 | { |
7223 | register SV *sv; | |
7224 | ||
7225 | new_SV(sv); | |
9da1e3b5 MUN |
7226 | sv_setpvn(sv,s,len); |
7227 | return sv; | |
7228 | } | |
7229 | ||
bd08039b NC |
7230 | |
7231 | /* | |
926f8064 | 7232 | =for apidoc newSVhek |
bd08039b NC |
7233 | |
7234 | Creates a new SV from the hash key structure. It will generate scalars that | |
5aaec2b4 NC |
7235 | point to the shared string table where possible. Returns a new (undefined) |
7236 | SV if the hek is NULL. | |
bd08039b NC |
7237 | |
7238 | =cut | |
7239 | */ | |
7240 | ||
7241 | SV * | |
c1b02ed8 | 7242 | Perl_newSVhek(pTHX_ const HEK *hek) |
bd08039b | 7243 | { |
5aaec2b4 NC |
7244 | if (!hek) { |
7245 | SV *sv; | |
7246 | ||
7247 | new_SV(sv); | |
7248 | return sv; | |
7249 | } | |
7250 | ||
bd08039b NC |
7251 | if (HEK_LEN(hek) == HEf_SVKEY) { |
7252 | return newSVsv(*(SV**)HEK_KEY(hek)); | |
7253 | } else { | |
7254 | const int flags = HEK_FLAGS(hek); | |
7255 | if (flags & HVhek_WASUTF8) { | |
7256 | /* Trouble :-) | |
7257 | Andreas would like keys he put in as utf8 to come back as utf8 | |
7258 | */ | |
7259 | STRLEN utf8_len = HEK_LEN(hek); | |
7260 | U8 *as_utf8 = bytes_to_utf8 ((U8*)HEK_KEY(hek), &utf8_len); | |
7261 | SV *sv = newSVpvn ((char*)as_utf8, utf8_len); | |
7262 | ||
7263 | SvUTF8_on (sv); | |
7264 | Safefree (as_utf8); /* bytes_to_utf8() allocates a new string */ | |
7265 | return sv; | |
7266 | } else if (flags & HVhek_REHASH) { | |
7267 | /* We don't have a pointer to the hv, so we have to replicate the | |
7268 | flag into every HEK. This hv is using custom a hasing | |
7269 | algorithm. Hence we can't return a shared string scalar, as | |
7270 | that would contain the (wrong) hash value, and might get passed | |
7271 | into an hv routine with a regular hash */ | |
7272 | ||
7273 | SV *sv = newSVpvn (HEK_KEY(hek), HEK_LEN(hek)); | |
7274 | if (HEK_UTF8(hek)) | |
7275 | SvUTF8_on (sv); | |
7276 | return sv; | |
7277 | } | |
7278 | /* This will be overwhelminly the most common case. */ | |
7279 | return newSVpvn_share(HEK_KEY(hek), | |
7280 | (HEK_UTF8(hek) ? -HEK_LEN(hek) : HEK_LEN(hek)), | |
7281 | HEK_HASH(hek)); | |
7282 | } | |
7283 | } | |
7284 | ||
1c846c1f NIS |
7285 | /* |
7286 | =for apidoc newSVpvn_share | |
7287 | ||
3f7c398e | 7288 | Creates a new SV with its SvPVX_const pointing to a shared string in the string |
645c22ef DM |
7289 | table. If the string does not already exist in the table, it is created |
7290 | first. Turns on READONLY and FAKE. The string's hash is stored in the UV | |
7291 | slot of the SV; if the C<hash> parameter is non-zero, that value is used; | |
7292 | otherwise the hash is computed. The idea here is that as the string table | |
3f7c398e | 7293 | is used for shared hash keys these strings will have SvPVX_const == HeKEY and |
645c22ef | 7294 | hash lookup will avoid string compare. |
1c846c1f NIS |
7295 | |
7296 | =cut | |
7297 | */ | |
7298 | ||
7299 | SV * | |
c3654f1a | 7300 | Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash) |
1c846c1f NIS |
7301 | { |
7302 | register SV *sv; | |
c3654f1a IH |
7303 | bool is_utf8 = FALSE; |
7304 | if (len < 0) { | |
77caf834 | 7305 | STRLEN tmplen = -len; |
c3654f1a | 7306 | is_utf8 = TRUE; |
75a54232 | 7307 | /* See the note in hv.c:hv_fetch() --jhi */ |
e1ec3a88 | 7308 | src = (char*)bytes_from_utf8((const U8*)src, &tmplen, &is_utf8); |
75a54232 JH |
7309 | len = tmplen; |
7310 | } | |
1c846c1f | 7311 | if (!hash) |
5afd6d42 | 7312 | PERL_HASH(hash, src, len); |
1c846c1f | 7313 | new_SV(sv); |
bdd68bc3 | 7314 | sv_upgrade(sv, SVt_PV); |
f880fe2f | 7315 | SvPV_set(sv, sharepvn(src, is_utf8?-len:len, hash)); |
b162af07 | 7316 | SvCUR_set(sv, len); |
b162af07 | 7317 | SvLEN_set(sv, 0); |
1c846c1f NIS |
7318 | SvREADONLY_on(sv); |
7319 | SvFAKE_on(sv); | |
7320 | SvPOK_on(sv); | |
c3654f1a IH |
7321 | if (is_utf8) |
7322 | SvUTF8_on(sv); | |
1c846c1f NIS |
7323 | return sv; |
7324 | } | |
7325 | ||
645c22ef | 7326 | |
cea2e8a9 | 7327 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
7328 | |
7329 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
7330 | * version of the main function, (which may itself be aliased to us). | |
7331 | * Don't access this version directly. | |
7332 | */ | |
7333 | ||
46fc3d4c | 7334 | SV * |
cea2e8a9 | 7335 | Perl_newSVpvf_nocontext(const char* pat, ...) |
46fc3d4c | 7336 | { |
cea2e8a9 | 7337 | dTHX; |
46fc3d4c | 7338 | register SV *sv; |
7339 | va_list args; | |
46fc3d4c | 7340 | va_start(args, pat); |
c5be433b | 7341 | sv = vnewSVpvf(pat, &args); |
46fc3d4c | 7342 | va_end(args); |
7343 | return sv; | |
7344 | } | |
cea2e8a9 | 7345 | #endif |
46fc3d4c | 7346 | |
954c1994 GS |
7347 | /* |
7348 | =for apidoc newSVpvf | |
7349 | ||
645c22ef | 7350 | Creates a new SV and initializes it with the string formatted like |
954c1994 GS |
7351 | C<sprintf>. |
7352 | ||
7353 | =cut | |
7354 | */ | |
7355 | ||
cea2e8a9 GS |
7356 | SV * |
7357 | Perl_newSVpvf(pTHX_ const char* pat, ...) | |
7358 | { | |
7359 | register SV *sv; | |
7360 | va_list args; | |
cea2e8a9 | 7361 | va_start(args, pat); |
c5be433b | 7362 | sv = vnewSVpvf(pat, &args); |
cea2e8a9 GS |
7363 | va_end(args); |
7364 | return sv; | |
7365 | } | |
46fc3d4c | 7366 | |
645c22ef DM |
7367 | /* backend for newSVpvf() and newSVpvf_nocontext() */ |
7368 | ||
79072805 | 7369 | SV * |
c5be433b GS |
7370 | Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args) |
7371 | { | |
7372 | register SV *sv; | |
7373 | new_SV(sv); | |
7374 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
7375 | return sv; | |
7376 | } | |
7377 | ||
954c1994 GS |
7378 | /* |
7379 | =for apidoc newSVnv | |
7380 | ||
7381 | Creates a new SV and copies a floating point value into it. | |
7382 | The reference count for the SV is set to 1. | |
7383 | ||
7384 | =cut | |
7385 | */ | |
7386 | ||
c5be433b | 7387 | SV * |
65202027 | 7388 | Perl_newSVnv(pTHX_ NV n) |
79072805 | 7389 | { |
463ee0b2 | 7390 | register SV *sv; |
79072805 | 7391 | |
4561caa4 | 7392 | new_SV(sv); |
79072805 LW |
7393 | sv_setnv(sv,n); |
7394 | return sv; | |
7395 | } | |
7396 | ||
954c1994 GS |
7397 | /* |
7398 | =for apidoc newSViv | |
7399 | ||
7400 | Creates a new SV and copies an integer into it. The reference count for the | |
7401 | SV is set to 1. | |
7402 | ||
7403 | =cut | |
7404 | */ | |
7405 | ||
79072805 | 7406 | SV * |
864dbfa3 | 7407 | Perl_newSViv(pTHX_ IV i) |
79072805 | 7408 | { |
463ee0b2 | 7409 | register SV *sv; |
79072805 | 7410 | |
4561caa4 | 7411 | new_SV(sv); |
79072805 LW |
7412 | sv_setiv(sv,i); |
7413 | return sv; | |
7414 | } | |
7415 | ||
954c1994 | 7416 | /* |
1a3327fb JH |
7417 | =for apidoc newSVuv |
7418 | ||
7419 | Creates a new SV and copies an unsigned integer into it. | |
7420 | The reference count for the SV is set to 1. | |
7421 | ||
7422 | =cut | |
7423 | */ | |
7424 | ||
7425 | SV * | |
7426 | Perl_newSVuv(pTHX_ UV u) | |
7427 | { | |
7428 | register SV *sv; | |
7429 | ||
7430 | new_SV(sv); | |
7431 | sv_setuv(sv,u); | |
7432 | return sv; | |
7433 | } | |
7434 | ||
7435 | /* | |
954c1994 GS |
7436 | =for apidoc newRV_noinc |
7437 | ||
7438 | Creates an RV wrapper for an SV. The reference count for the original | |
7439 | SV is B<not> incremented. | |
7440 | ||
7441 | =cut | |
7442 | */ | |
7443 | ||
2304df62 | 7444 | SV * |
864dbfa3 | 7445 | Perl_newRV_noinc(pTHX_ SV *tmpRef) |
2304df62 AD |
7446 | { |
7447 | register SV *sv; | |
7448 | ||
4561caa4 | 7449 | new_SV(sv); |
2304df62 | 7450 | sv_upgrade(sv, SVt_RV); |
76e3520e | 7451 | SvTEMP_off(tmpRef); |
b162af07 | 7452 | SvRV_set(sv, tmpRef); |
2304df62 | 7453 | SvROK_on(sv); |
2304df62 AD |
7454 | return sv; |
7455 | } | |
7456 | ||
ff276b08 | 7457 | /* newRV_inc is the official function name to use now. |
645c22ef DM |
7458 | * newRV_inc is in fact #defined to newRV in sv.h |
7459 | */ | |
7460 | ||
5f05dabc | 7461 | SV * |
864dbfa3 | 7462 | Perl_newRV(pTHX_ SV *tmpRef) |
5f05dabc | 7463 | { |
5f6447b6 | 7464 | return newRV_noinc(SvREFCNT_inc(tmpRef)); |
5f05dabc | 7465 | } |
5f05dabc | 7466 | |
954c1994 GS |
7467 | /* |
7468 | =for apidoc newSVsv | |
7469 | ||
7470 | Creates a new SV which is an exact duplicate of the original SV. | |
645c22ef | 7471 | (Uses C<sv_setsv>). |
954c1994 GS |
7472 | |
7473 | =cut | |
7474 | */ | |
7475 | ||
79072805 | 7476 | SV * |
864dbfa3 | 7477 | Perl_newSVsv(pTHX_ register SV *old) |
79072805 | 7478 | { |
463ee0b2 | 7479 | register SV *sv; |
79072805 LW |
7480 | |
7481 | if (!old) | |
7482 | return Nullsv; | |
8990e307 | 7483 | if (SvTYPE(old) == SVTYPEMASK) { |
0453d815 | 7484 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 7485 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "semi-panic: attempt to dup freed string"); |
79072805 LW |
7486 | return Nullsv; |
7487 | } | |
4561caa4 | 7488 | new_SV(sv); |
e90aabeb NC |
7489 | /* SV_GMAGIC is the default for sv_setv() |
7490 | SV_NOSTEAL prevents TEMP buffers being, well, stolen, and saves games | |
7491 | with SvTEMP_off and SvTEMP_on round a call to sv_setsv. */ | |
7492 | sv_setsv_flags(sv, old, SV_GMAGIC | SV_NOSTEAL); | |
463ee0b2 | 7493 | return sv; |
79072805 LW |
7494 | } |
7495 | ||
645c22ef DM |
7496 | /* |
7497 | =for apidoc sv_reset | |
7498 | ||
7499 | Underlying implementation for the C<reset> Perl function. | |
7500 | Note that the perl-level function is vaguely deprecated. | |
7501 | ||
7502 | =cut | |
7503 | */ | |
7504 | ||
79072805 | 7505 | void |
e1ec3a88 | 7506 | Perl_sv_reset(pTHX_ register const char *s, HV *stash) |
79072805 | 7507 | { |
27da23d5 | 7508 | dVAR; |
4802d5d7 | 7509 | char todo[PERL_UCHAR_MAX+1]; |
79072805 | 7510 | |
49d8d3a1 MB |
7511 | if (!stash) |
7512 | return; | |
7513 | ||
79072805 | 7514 | if (!*s) { /* reset ?? searches */ |
8d2f4536 NC |
7515 | MAGIC *mg = mg_find((SV *)stash, PERL_MAGIC_symtab); |
7516 | if (mg) { | |
7517 | PMOP *pm = (PMOP *) mg->mg_obj; | |
7518 | while (pm) { | |
7519 | pm->op_pmdynflags &= ~PMdf_USED; | |
7520 | pm = pm->op_pmnext; | |
7521 | } | |
79072805 LW |
7522 | } |
7523 | return; | |
7524 | } | |
7525 | ||
7526 | /* reset variables */ | |
7527 | ||
7528 | if (!HvARRAY(stash)) | |
7529 | return; | |
463ee0b2 LW |
7530 | |
7531 | Zero(todo, 256, char); | |
79072805 | 7532 | while (*s) { |
b464bac0 AL |
7533 | I32 max; |
7534 | I32 i = (unsigned char)*s; | |
79072805 LW |
7535 | if (s[1] == '-') { |
7536 | s += 2; | |
7537 | } | |
4802d5d7 | 7538 | max = (unsigned char)*s++; |
79072805 | 7539 | for ( ; i <= max; i++) { |
463ee0b2 LW |
7540 | todo[i] = 1; |
7541 | } | |
a0d0e21e | 7542 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
b464bac0 | 7543 | HE *entry; |
79072805 | 7544 | for (entry = HvARRAY(stash)[i]; |
9e35f4b3 GS |
7545 | entry; |
7546 | entry = HeNEXT(entry)) | |
7547 | { | |
b464bac0 AL |
7548 | register GV *gv; |
7549 | register SV *sv; | |
7550 | ||
1edc1566 | 7551 | if (!todo[(U8)*HeKEY(entry)]) |
463ee0b2 | 7552 | continue; |
1edc1566 | 7553 | gv = (GV*)HeVAL(entry); |
79072805 | 7554 | sv = GvSV(gv); |
9e35f4b3 GS |
7555 | if (SvTHINKFIRST(sv)) { |
7556 | if (!SvREADONLY(sv) && SvROK(sv)) | |
7557 | sv_unref(sv); | |
7558 | continue; | |
7559 | } | |
0c34ef67 | 7560 | SvOK_off(sv); |
79072805 LW |
7561 | if (SvTYPE(sv) >= SVt_PV) { |
7562 | SvCUR_set(sv, 0); | |
3f7c398e | 7563 | if (SvPVX_const(sv) != Nullch) |
463ee0b2 | 7564 | *SvPVX(sv) = '\0'; |
44a8e56a | 7565 | SvTAINT(sv); |
79072805 LW |
7566 | } |
7567 | if (GvAV(gv)) { | |
7568 | av_clear(GvAV(gv)); | |
7569 | } | |
bfcb3514 | 7570 | if (GvHV(gv) && !HvNAME_get(GvHV(gv))) { |
463ee0b2 | 7571 | hv_clear(GvHV(gv)); |
2f42fcb0 | 7572 | #ifndef PERL_MICRO |
fa6a1c44 | 7573 | #ifdef USE_ENVIRON_ARRAY |
4efc5df6 GS |
7574 | if (gv == PL_envgv |
7575 | # ifdef USE_ITHREADS | |
7576 | && PL_curinterp == aTHX | |
7577 | # endif | |
7578 | ) | |
7579 | { | |
79072805 | 7580 | environ[0] = Nullch; |
4efc5df6 | 7581 | } |
a0d0e21e | 7582 | #endif |
2f42fcb0 | 7583 | #endif /* !PERL_MICRO */ |
79072805 LW |
7584 | } |
7585 | } | |
7586 | } | |
7587 | } | |
7588 | } | |
7589 | ||
645c22ef DM |
7590 | /* |
7591 | =for apidoc sv_2io | |
7592 | ||
7593 | Using various gambits, try to get an IO from an SV: the IO slot if its a | |
7594 | GV; or the recursive result if we're an RV; or the IO slot of the symbol | |
7595 | named after the PV if we're a string. | |
7596 | ||
7597 | =cut | |
7598 | */ | |
7599 | ||
46fc3d4c | 7600 | IO* |
864dbfa3 | 7601 | Perl_sv_2io(pTHX_ SV *sv) |
46fc3d4c | 7602 | { |
7603 | IO* io; | |
7604 | GV* gv; | |
7605 | ||
7606 | switch (SvTYPE(sv)) { | |
7607 | case SVt_PVIO: | |
7608 | io = (IO*)sv; | |
7609 | break; | |
7610 | case SVt_PVGV: | |
7611 | gv = (GV*)sv; | |
7612 | io = GvIO(gv); | |
7613 | if (!io) | |
cea2e8a9 | 7614 | Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv)); |
46fc3d4c | 7615 | break; |
7616 | default: | |
7617 | if (!SvOK(sv)) | |
cea2e8a9 | 7618 | Perl_croak(aTHX_ PL_no_usym, "filehandle"); |
46fc3d4c | 7619 | if (SvROK(sv)) |
7620 | return sv_2io(SvRV(sv)); | |
7a5fd60d | 7621 | gv = gv_fetchsv(sv, FALSE, SVt_PVIO); |
46fc3d4c | 7622 | if (gv) |
7623 | io = GvIO(gv); | |
7624 | else | |
7625 | io = 0; | |
7626 | if (!io) | |
35c1215d | 7627 | Perl_croak(aTHX_ "Bad filehandle: %"SVf, sv); |
46fc3d4c | 7628 | break; |
7629 | } | |
7630 | return io; | |
7631 | } | |
7632 | ||
645c22ef DM |
7633 | /* |
7634 | =for apidoc sv_2cv | |
7635 | ||
7636 | Using various gambits, try to get a CV from an SV; in addition, try if | |
7637 | possible to set C<*st> and C<*gvp> to the stash and GV associated with it. | |
7638 | ||
7639 | =cut | |
7640 | */ | |
7641 | ||
79072805 | 7642 | CV * |
864dbfa3 | 7643 | Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref) |
79072805 | 7644 | { |
27da23d5 | 7645 | dVAR; |
c04a4dfe JH |
7646 | GV *gv = Nullgv; |
7647 | CV *cv = Nullcv; | |
79072805 LW |
7648 | |
7649 | if (!sv) | |
93a17b20 | 7650 | return *gvp = Nullgv, Nullcv; |
79072805 | 7651 | switch (SvTYPE(sv)) { |
79072805 LW |
7652 | case SVt_PVCV: |
7653 | *st = CvSTASH(sv); | |
7654 | *gvp = Nullgv; | |
7655 | return (CV*)sv; | |
7656 | case SVt_PVHV: | |
7657 | case SVt_PVAV: | |
7658 | *gvp = Nullgv; | |
7659 | return Nullcv; | |
8990e307 LW |
7660 | case SVt_PVGV: |
7661 | gv = (GV*)sv; | |
a0d0e21e | 7662 | *gvp = gv; |
8990e307 LW |
7663 | *st = GvESTASH(gv); |
7664 | goto fix_gv; | |
7665 | ||
79072805 | 7666 | default: |
a0d0e21e LW |
7667 | if (SvGMAGICAL(sv)) |
7668 | mg_get(sv); | |
7669 | if (SvROK(sv)) { | |
f5284f61 IZ |
7670 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
7671 | tryAMAGICunDEREF(to_cv); | |
7672 | ||
62f274bf GS |
7673 | sv = SvRV(sv); |
7674 | if (SvTYPE(sv) == SVt_PVCV) { | |
7675 | cv = (CV*)sv; | |
7676 | *gvp = Nullgv; | |
7677 | *st = CvSTASH(cv); | |
7678 | return cv; | |
7679 | } | |
7680 | else if(isGV(sv)) | |
7681 | gv = (GV*)sv; | |
7682 | else | |
cea2e8a9 | 7683 | Perl_croak(aTHX_ "Not a subroutine reference"); |
a0d0e21e | 7684 | } |
62f274bf | 7685 | else if (isGV(sv)) |
79072805 LW |
7686 | gv = (GV*)sv; |
7687 | else | |
7a5fd60d | 7688 | gv = gv_fetchsv(sv, lref, SVt_PVCV); |
79072805 LW |
7689 | *gvp = gv; |
7690 | if (!gv) | |
7691 | return Nullcv; | |
7692 | *st = GvESTASH(gv); | |
8990e307 | 7693 | fix_gv: |
8ebc5c01 | 7694 | if (lref && !GvCVu(gv)) { |
4633a7c4 | 7695 | SV *tmpsv; |
748a9306 | 7696 | ENTER; |
4633a7c4 | 7697 | tmpsv = NEWSV(704,0); |
16660edb | 7698 | gv_efullname3(tmpsv, gv, Nullch); |
f6ec51f7 GS |
7699 | /* XXX this is probably not what they think they're getting. |
7700 | * It has the same effect as "sub name;", i.e. just a forward | |
7701 | * declaration! */ | |
774d564b | 7702 | newSUB(start_subparse(FALSE, 0), |
4633a7c4 LW |
7703 | newSVOP(OP_CONST, 0, tmpsv), |
7704 | Nullop, | |
8990e307 | 7705 | Nullop); |
748a9306 | 7706 | LEAVE; |
8ebc5c01 | 7707 | if (!GvCVu(gv)) |
35c1215d NC |
7708 | Perl_croak(aTHX_ "Unable to create sub named \"%"SVf"\"", |
7709 | sv); | |
8990e307 | 7710 | } |
8ebc5c01 | 7711 | return GvCVu(gv); |
79072805 LW |
7712 | } |
7713 | } | |
7714 | ||
c461cf8f JH |
7715 | /* |
7716 | =for apidoc sv_true | |
7717 | ||
7718 | Returns true if the SV has a true value by Perl's rules. | |
645c22ef DM |
7719 | Use the C<SvTRUE> macro instead, which may call C<sv_true()> or may |
7720 | instead use an in-line version. | |
c461cf8f JH |
7721 | |
7722 | =cut | |
7723 | */ | |
7724 | ||
79072805 | 7725 | I32 |
864dbfa3 | 7726 | Perl_sv_true(pTHX_ register SV *sv) |
79072805 | 7727 | { |
8990e307 LW |
7728 | if (!sv) |
7729 | return 0; | |
79072805 | 7730 | if (SvPOK(sv)) { |
e1ec3a88 | 7731 | const register XPV* tXpv; |
4e35701f | 7732 | if ((tXpv = (XPV*)SvANY(sv)) && |
c2f1de04 | 7733 | (tXpv->xpv_cur > 1 || |
339049b0 | 7734 | (tXpv->xpv_cur && *sv->sv_u.svu_pv != '0'))) |
79072805 LW |
7735 | return 1; |
7736 | else | |
7737 | return 0; | |
7738 | } | |
7739 | else { | |
7740 | if (SvIOK(sv)) | |
463ee0b2 | 7741 | return SvIVX(sv) != 0; |
79072805 LW |
7742 | else { |
7743 | if (SvNOK(sv)) | |
463ee0b2 | 7744 | return SvNVX(sv) != 0.0; |
79072805 | 7745 | else |
463ee0b2 | 7746 | return sv_2bool(sv); |
79072805 LW |
7747 | } |
7748 | } | |
7749 | } | |
79072805 | 7750 | |
645c22ef DM |
7751 | /* |
7752 | =for apidoc sv_iv | |
7753 | ||
7754 | A private implementation of the C<SvIVx> macro for compilers which can't | |
7755 | cope with complex macro expressions. Always use the macro instead. | |
7756 | ||
7757 | =cut | |
7758 | */ | |
7759 | ||
ff68c719 | 7760 | IV |
864dbfa3 | 7761 | Perl_sv_iv(pTHX_ register SV *sv) |
85e6fe83 | 7762 | { |
25da4f38 IZ |
7763 | if (SvIOK(sv)) { |
7764 | if (SvIsUV(sv)) | |
7765 | return (IV)SvUVX(sv); | |
ff68c719 | 7766 | return SvIVX(sv); |
25da4f38 | 7767 | } |
ff68c719 | 7768 | return sv_2iv(sv); |
85e6fe83 | 7769 | } |
85e6fe83 | 7770 | |
645c22ef DM |
7771 | /* |
7772 | =for apidoc sv_uv | |
7773 | ||
7774 | A private implementation of the C<SvUVx> macro for compilers which can't | |
7775 | cope with complex macro expressions. Always use the macro instead. | |
7776 | ||
7777 | =cut | |
7778 | */ | |
7779 | ||
ff68c719 | 7780 | UV |
864dbfa3 | 7781 | Perl_sv_uv(pTHX_ register SV *sv) |
ff68c719 | 7782 | { |
25da4f38 IZ |
7783 | if (SvIOK(sv)) { |
7784 | if (SvIsUV(sv)) | |
7785 | return SvUVX(sv); | |
7786 | return (UV)SvIVX(sv); | |
7787 | } | |
ff68c719 | 7788 | return sv_2uv(sv); |
7789 | } | |
85e6fe83 | 7790 | |
645c22ef DM |
7791 | /* |
7792 | =for apidoc sv_nv | |
7793 | ||
7794 | A private implementation of the C<SvNVx> macro for compilers which can't | |
7795 | cope with complex macro expressions. Always use the macro instead. | |
7796 | ||
7797 | =cut | |
7798 | */ | |
7799 | ||
65202027 | 7800 | NV |
864dbfa3 | 7801 | Perl_sv_nv(pTHX_ register SV *sv) |
79072805 | 7802 | { |
ff68c719 | 7803 | if (SvNOK(sv)) |
7804 | return SvNVX(sv); | |
7805 | return sv_2nv(sv); | |
79072805 | 7806 | } |
79072805 | 7807 | |
09540bc3 JH |
7808 | /* sv_pv() is now a macro using SvPV_nolen(); |
7809 | * this function provided for binary compatibility only | |
7810 | */ | |
7811 | ||
7812 | char * | |
7813 | Perl_sv_pv(pTHX_ SV *sv) | |
7814 | { | |
09540bc3 JH |
7815 | if (SvPOK(sv)) |
7816 | return SvPVX(sv); | |
7817 | ||
93524f2b | 7818 | return sv_2pv(sv, 0); |
09540bc3 JH |
7819 | } |
7820 | ||
645c22ef DM |
7821 | /* |
7822 | =for apidoc sv_pv | |
7823 | ||
baca2b92 | 7824 | Use the C<SvPV_nolen> macro instead |
645c22ef | 7825 | |
645c22ef DM |
7826 | =for apidoc sv_pvn |
7827 | ||
7828 | A private implementation of the C<SvPV> macro for compilers which can't | |
7829 | cope with complex macro expressions. Always use the macro instead. | |
7830 | ||
7831 | =cut | |
7832 | */ | |
7833 | ||
1fa8b10d | 7834 | char * |
864dbfa3 | 7835 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) |
79072805 | 7836 | { |
85e6fe83 LW |
7837 | if (SvPOK(sv)) { |
7838 | *lp = SvCUR(sv); | |
a0d0e21e | 7839 | return SvPVX(sv); |
85e6fe83 | 7840 | } |
463ee0b2 | 7841 | return sv_2pv(sv, lp); |
79072805 | 7842 | } |
79072805 | 7843 | |
6e9d1081 NC |
7844 | |
7845 | char * | |
7846 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
7847 | { | |
7848 | if (SvPOK(sv)) { | |
7849 | *lp = SvCUR(sv); | |
7850 | return SvPVX(sv); | |
7851 | } | |
7852 | return sv_2pv_flags(sv, lp, 0); | |
7853 | } | |
7854 | ||
09540bc3 JH |
7855 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); |
7856 | * this function provided for binary compatibility only | |
7857 | */ | |
7858 | ||
7859 | char * | |
7860 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
7861 | { | |
7862 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
7863 | } | |
7864 | ||
c461cf8f JH |
7865 | /* |
7866 | =for apidoc sv_pvn_force | |
7867 | ||
7868 | Get a sensible string out of the SV somehow. | |
645c22ef DM |
7869 | A private implementation of the C<SvPV_force> macro for compilers which |
7870 | can't cope with complex macro expressions. Always use the macro instead. | |
c461cf8f | 7871 | |
8d6d96c1 HS |
7872 | =for apidoc sv_pvn_force_flags |
7873 | ||
7874 | Get a sensible string out of the SV somehow. | |
7875 | If C<flags> has C<SV_GMAGIC> bit set, will C<mg_get> on C<sv> if | |
7876 | appropriate, else not. C<sv_pvn_force> and C<sv_pvn_force_nomg> are | |
7877 | implemented in terms of this function. | |
645c22ef DM |
7878 | You normally want to use the various wrapper macros instead: see |
7879 | C<SvPV_force> and C<SvPV_force_nomg> | |
8d6d96c1 HS |
7880 | |
7881 | =cut | |
7882 | */ | |
7883 | ||
7884 | char * | |
7885 | Perl_sv_pvn_force_flags(pTHX_ SV *sv, STRLEN *lp, I32 flags) | |
7886 | { | |
a0d0e21e | 7887 | |
6fc92669 | 7888 | if (SvTHINKFIRST(sv) && !SvROK(sv)) |
765f542d | 7889 | sv_force_normal_flags(sv, 0); |
1c846c1f | 7890 | |
a0d0e21e | 7891 | if (SvPOK(sv)) { |
13c5b33c NC |
7892 | if (lp) |
7893 | *lp = SvCUR(sv); | |
a0d0e21e LW |
7894 | } |
7895 | else { | |
a3b680e6 | 7896 | char *s; |
13c5b33c NC |
7897 | STRLEN len; |
7898 | ||
4d84ee25 NC |
7899 | if (SvREADONLY(sv) && !(flags & SV_MUTABLE_RETURN)) { |
7900 | if (PL_op) | |
7901 | Perl_croak(aTHX_ "Can't coerce readonly %s to string in %s", | |
7902 | sv_reftype(sv,0), OP_NAME(PL_op)); | |
7903 | else | |
7904 | Perl_croak(aTHX_ "Can't coerce readonly %s to string", | |
7905 | sv_reftype(sv,0)); | |
7906 | } | |
748a9306 | 7907 | if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) { |
cea2e8a9 | 7908 | Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0), |
53e06cf0 | 7909 | OP_NAME(PL_op)); |
a0d0e21e | 7910 | } |
4633a7c4 | 7911 | else |
13c5b33c NC |
7912 | s = sv_2pv_flags(sv, &len, flags); |
7913 | if (lp) | |
7914 | *lp = len; | |
7915 | ||
3f7c398e | 7916 | if (s != SvPVX_const(sv)) { /* Almost, but not quite, sv_setpvn() */ |
a0d0e21e LW |
7917 | if (SvROK(sv)) |
7918 | sv_unref(sv); | |
862a34c6 | 7919 | SvUPGRADE(sv, SVt_PV); /* Never FALSE */ |
a0d0e21e | 7920 | SvGROW(sv, len + 1); |
3f7c398e | 7921 | Move(s,SvPVX_const(sv),len,char); |
a0d0e21e LW |
7922 | SvCUR_set(sv, len); |
7923 | *SvEND(sv) = '\0'; | |
7924 | } | |
7925 | if (!SvPOK(sv)) { | |
7926 | SvPOK_on(sv); /* validate pointer */ | |
7927 | SvTAINT(sv); | |
1d7c1841 | 7928 | DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n", |
3f7c398e | 7929 | PTR2UV(sv),SvPVX_const(sv))); |
a0d0e21e LW |
7930 | } |
7931 | } | |
4d84ee25 | 7932 | return SvPVX_mutable(sv); |
a0d0e21e LW |
7933 | } |
7934 | ||
09540bc3 JH |
7935 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); |
7936 | * this function provided for binary compatibility only | |
7937 | */ | |
7938 | ||
7939 | char * | |
7940 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
7941 | { | |
7942 | sv_utf8_downgrade(sv,0); | |
7943 | return sv_pv(sv); | |
7944 | } | |
7945 | ||
645c22ef DM |
7946 | /* |
7947 | =for apidoc sv_pvbyte | |
7948 | ||
baca2b92 | 7949 | Use C<SvPVbyte_nolen> instead. |
645c22ef | 7950 | |
645c22ef DM |
7951 | =for apidoc sv_pvbyten |
7952 | ||
7953 | A private implementation of the C<SvPVbyte> macro for compilers | |
7954 | which can't cope with complex macro expressions. Always use the macro | |
7955 | instead. | |
7956 | ||
7957 | =cut | |
7958 | */ | |
7959 | ||
7340a771 GS |
7960 | char * |
7961 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
7962 | { | |
ffebcc3e | 7963 | sv_utf8_downgrade(sv,0); |
7340a771 GS |
7964 | return sv_pvn(sv,lp); |
7965 | } | |
7966 | ||
645c22ef DM |
7967 | /* |
7968 | =for apidoc sv_pvbyten_force | |
7969 | ||
7970 | A private implementation of the C<SvPVbytex_force> macro for compilers | |
7971 | which can't cope with complex macro expressions. Always use the macro | |
7972 | instead. | |
7973 | ||
7974 | =cut | |
7975 | */ | |
7976 | ||
7340a771 GS |
7977 | char * |
7978 | Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp) | |
7979 | { | |
46ec2f14 | 7980 | sv_pvn_force(sv,lp); |
ffebcc3e | 7981 | sv_utf8_downgrade(sv,0); |
46ec2f14 TS |
7982 | *lp = SvCUR(sv); |
7983 | return SvPVX(sv); | |
7340a771 GS |
7984 | } |
7985 | ||
09540bc3 JH |
7986 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
7987 | * this function provided for binary compatibility only | |
7988 | */ | |
7989 | ||
7990 | char * | |
7991 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
7992 | { | |
7993 | sv_utf8_upgrade(sv); | |
7994 | return sv_pv(sv); | |
7995 | } | |
7996 | ||
645c22ef DM |
7997 | /* |
7998 | =for apidoc sv_pvutf8 | |
7999 | ||
baca2b92 | 8000 | Use the C<SvPVutf8_nolen> macro instead |
645c22ef | 8001 | |
645c22ef DM |
8002 | =for apidoc sv_pvutf8n |
8003 | ||
8004 | A private implementation of the C<SvPVutf8> macro for compilers | |
8005 | which can't cope with complex macro expressions. Always use the macro | |
8006 | instead. | |
8007 | ||
8008 | =cut | |
8009 | */ | |
8010 | ||
7340a771 GS |
8011 | char * |
8012 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
8013 | { | |
560a288e | 8014 | sv_utf8_upgrade(sv); |
7340a771 GS |
8015 | return sv_pvn(sv,lp); |
8016 | } | |
8017 | ||
c461cf8f JH |
8018 | /* |
8019 | =for apidoc sv_pvutf8n_force | |
8020 | ||
645c22ef DM |
8021 | A private implementation of the C<SvPVutf8_force> macro for compilers |
8022 | which can't cope with complex macro expressions. Always use the macro | |
8023 | instead. | |
c461cf8f JH |
8024 | |
8025 | =cut | |
8026 | */ | |
8027 | ||
7340a771 GS |
8028 | char * |
8029 | Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp) | |
8030 | { | |
46ec2f14 | 8031 | sv_pvn_force(sv,lp); |
560a288e | 8032 | sv_utf8_upgrade(sv); |
46ec2f14 TS |
8033 | *lp = SvCUR(sv); |
8034 | return SvPVX(sv); | |
7340a771 GS |
8035 | } |
8036 | ||
c461cf8f JH |
8037 | /* |
8038 | =for apidoc sv_reftype | |
8039 | ||
8040 | Returns a string describing what the SV is a reference to. | |
8041 | ||
8042 | =cut | |
8043 | */ | |
8044 | ||
1cb0ed9b | 8045 | char * |
bfed75c6 | 8046 | Perl_sv_reftype(pTHX_ const SV *sv, int ob) |
a0d0e21e | 8047 | { |
07409e01 NC |
8048 | /* The fact that I don't need to downcast to char * everywhere, only in ?: |
8049 | inside return suggests a const propagation bug in g++. */ | |
c86bf373 | 8050 | if (ob && SvOBJECT(sv)) { |
1b6737cc | 8051 | char * const name = HvNAME_get(SvSTASH(sv)); |
07409e01 | 8052 | return name ? name : (char *) "__ANON__"; |
c86bf373 | 8053 | } |
a0d0e21e LW |
8054 | else { |
8055 | switch (SvTYPE(sv)) { | |
8056 | case SVt_NULL: | |
8057 | case SVt_IV: | |
8058 | case SVt_NV: | |
8059 | case SVt_RV: | |
8060 | case SVt_PV: | |
8061 | case SVt_PVIV: | |
8062 | case SVt_PVNV: | |
8063 | case SVt_PVMG: | |
8064 | case SVt_PVBM: | |
1cb0ed9b | 8065 | if (SvVOK(sv)) |
439cb1c4 | 8066 | return "VSTRING"; |
a0d0e21e LW |
8067 | if (SvROK(sv)) |
8068 | return "REF"; | |
8069 | else | |
8070 | return "SCALAR"; | |
1cb0ed9b | 8071 | |
07409e01 | 8072 | case SVt_PVLV: return (char *) (SvROK(sv) ? "REF" |
be65207d DM |
8073 | /* tied lvalues should appear to be |
8074 | * scalars for backwards compatitbility */ | |
8075 | : (LvTYPE(sv) == 't' || LvTYPE(sv) == 'T') | |
07409e01 | 8076 | ? "SCALAR" : "LVALUE"); |
a0d0e21e LW |
8077 | case SVt_PVAV: return "ARRAY"; |
8078 | case SVt_PVHV: return "HASH"; | |
8079 | case SVt_PVCV: return "CODE"; | |
8080 | case SVt_PVGV: return "GLOB"; | |
1d2dff63 | 8081 | case SVt_PVFM: return "FORMAT"; |
27f9d8f3 | 8082 | case SVt_PVIO: return "IO"; |
a0d0e21e LW |
8083 | default: return "UNKNOWN"; |
8084 | } | |
8085 | } | |
8086 | } | |
8087 | ||
954c1994 GS |
8088 | /* |
8089 | =for apidoc sv_isobject | |
8090 | ||
8091 | Returns a boolean indicating whether the SV is an RV pointing to a blessed | |
8092 | object. If the SV is not an RV, or if the object is not blessed, then this | |
8093 | will return false. | |
8094 | ||
8095 | =cut | |
8096 | */ | |
8097 | ||
463ee0b2 | 8098 | int |
864dbfa3 | 8099 | Perl_sv_isobject(pTHX_ SV *sv) |
85e6fe83 | 8100 | { |
68dc0745 | 8101 | if (!sv) |
8102 | return 0; | |
8103 | if (SvGMAGICAL(sv)) | |
8104 | mg_get(sv); | |
85e6fe83 LW |
8105 | if (!SvROK(sv)) |
8106 | return 0; | |
8107 | sv = (SV*)SvRV(sv); | |
8108 | if (!SvOBJECT(sv)) | |
8109 | return 0; | |
8110 | return 1; | |
8111 | } | |
8112 | ||
954c1994 GS |
8113 | /* |
8114 | =for apidoc sv_isa | |
8115 | ||
8116 | Returns a boolean indicating whether the SV is blessed into the specified | |
8117 | class. This does not check for subtypes; use C<sv_derived_from> to verify | |
8118 | an inheritance relationship. | |
8119 | ||
8120 | =cut | |
8121 | */ | |
8122 | ||
85e6fe83 | 8123 | int |
864dbfa3 | 8124 | Perl_sv_isa(pTHX_ SV *sv, const char *name) |
463ee0b2 | 8125 | { |
bfcb3514 | 8126 | const char *hvname; |
68dc0745 | 8127 | if (!sv) |
8128 | return 0; | |
8129 | if (SvGMAGICAL(sv)) | |
8130 | mg_get(sv); | |
ed6116ce | 8131 | if (!SvROK(sv)) |
463ee0b2 | 8132 | return 0; |
ed6116ce LW |
8133 | sv = (SV*)SvRV(sv); |
8134 | if (!SvOBJECT(sv)) | |
463ee0b2 | 8135 | return 0; |
bfcb3514 NC |
8136 | hvname = HvNAME_get(SvSTASH(sv)); |
8137 | if (!hvname) | |
e27ad1f2 | 8138 | return 0; |
463ee0b2 | 8139 | |
bfcb3514 | 8140 | return strEQ(hvname, name); |
463ee0b2 LW |
8141 | } |
8142 | ||
954c1994 GS |
8143 | /* |
8144 | =for apidoc newSVrv | |
8145 | ||
8146 | Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then | |
8147 | it will be upgraded to one. If C<classname> is non-null then the new SV will | |
8148 | be blessed in the specified package. The new SV is returned and its | |
8149 | reference count is 1. | |
8150 | ||
8151 | =cut | |
8152 | */ | |
8153 | ||
463ee0b2 | 8154 | SV* |
864dbfa3 | 8155 | Perl_newSVrv(pTHX_ SV *rv, const char *classname) |
463ee0b2 | 8156 | { |
463ee0b2 LW |
8157 | SV *sv; |
8158 | ||
4561caa4 | 8159 | new_SV(sv); |
51cf62d8 | 8160 | |
765f542d | 8161 | SV_CHECK_THINKFIRST_COW_DROP(rv); |
51cf62d8 | 8162 | SvAMAGIC_off(rv); |
51cf62d8 | 8163 | |
0199fce9 | 8164 | if (SvTYPE(rv) >= SVt_PVMG) { |
a3b680e6 | 8165 | const U32 refcnt = SvREFCNT(rv); |
0199fce9 JD |
8166 | SvREFCNT(rv) = 0; |
8167 | sv_clear(rv); | |
8168 | SvFLAGS(rv) = 0; | |
8169 | SvREFCNT(rv) = refcnt; | |
8170 | } | |
8171 | ||
51cf62d8 | 8172 | if (SvTYPE(rv) < SVt_RV) |
0199fce9 JD |
8173 | sv_upgrade(rv, SVt_RV); |
8174 | else if (SvTYPE(rv) > SVt_RV) { | |
8bd4d4c5 | 8175 | SvPV_free(rv); |
0199fce9 JD |
8176 | SvCUR_set(rv, 0); |
8177 | SvLEN_set(rv, 0); | |
8178 | } | |
51cf62d8 | 8179 | |
0c34ef67 | 8180 | SvOK_off(rv); |
b162af07 | 8181 | SvRV_set(rv, sv); |
ed6116ce | 8182 | SvROK_on(rv); |
463ee0b2 | 8183 | |
a0d0e21e | 8184 | if (classname) { |
1b6737cc | 8185 | HV* const stash = gv_stashpv(classname, TRUE); |
a0d0e21e LW |
8186 | (void)sv_bless(rv, stash); |
8187 | } | |
8188 | return sv; | |
8189 | } | |
8190 | ||
954c1994 GS |
8191 | /* |
8192 | =for apidoc sv_setref_pv | |
8193 | ||
8194 | Copies a pointer into a new SV, optionally blessing the SV. The C<rv> | |
8195 | argument will be upgraded to an RV. That RV will be modified to point to | |
8196 | the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed | |
8197 | into the SV. The C<classname> argument indicates the package for the | |
8198 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8199 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8200 | |
8201 | Do not use with other Perl types such as HV, AV, SV, CV, because those | |
8202 | objects will become corrupted by the pointer copy process. | |
8203 | ||
8204 | Note that C<sv_setref_pvn> copies the string while this copies the pointer. | |
8205 | ||
8206 | =cut | |
8207 | */ | |
8208 | ||
a0d0e21e | 8209 | SV* |
864dbfa3 | 8210 | Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv) |
a0d0e21e | 8211 | { |
189b2af5 | 8212 | if (!pv) { |
3280af22 | 8213 | sv_setsv(rv, &PL_sv_undef); |
189b2af5 GS |
8214 | SvSETMAGIC(rv); |
8215 | } | |
a0d0e21e | 8216 | else |
56431972 | 8217 | sv_setiv(newSVrv(rv,classname), PTR2IV(pv)); |
a0d0e21e LW |
8218 | return rv; |
8219 | } | |
8220 | ||
954c1994 GS |
8221 | /* |
8222 | =for apidoc sv_setref_iv | |
8223 | ||
8224 | Copies an integer into a new SV, optionally blessing the SV. The C<rv> | |
8225 | argument will be upgraded to an RV. That RV will be modified to point to | |
8226 | the new SV. The C<classname> argument indicates the package for the | |
8227 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8228 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8229 | |
8230 | =cut | |
8231 | */ | |
8232 | ||
a0d0e21e | 8233 | SV* |
864dbfa3 | 8234 | Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv) |
a0d0e21e LW |
8235 | { |
8236 | sv_setiv(newSVrv(rv,classname), iv); | |
8237 | return rv; | |
8238 | } | |
8239 | ||
954c1994 | 8240 | /* |
e1c57cef JH |
8241 | =for apidoc sv_setref_uv |
8242 | ||
8243 | Copies an unsigned integer into a new SV, optionally blessing the SV. The C<rv> | |
8244 | argument will be upgraded to an RV. That RV will be modified to point to | |
8245 | the new SV. The C<classname> argument indicates the package for the | |
8246 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8247 | will have a reference count of 1, and the RV will be returned. |
e1c57cef JH |
8248 | |
8249 | =cut | |
8250 | */ | |
8251 | ||
8252 | SV* | |
8253 | Perl_sv_setref_uv(pTHX_ SV *rv, const char *classname, UV uv) | |
8254 | { | |
8255 | sv_setuv(newSVrv(rv,classname), uv); | |
8256 | return rv; | |
8257 | } | |
8258 | ||
8259 | /* | |
954c1994 GS |
8260 | =for apidoc sv_setref_nv |
8261 | ||
8262 | Copies a double into a new SV, optionally blessing the SV. The C<rv> | |
8263 | argument will be upgraded to an RV. That RV will be modified to point to | |
8264 | the new SV. The C<classname> argument indicates the package for the | |
8265 | blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV | |
d34c2299 | 8266 | will have a reference count of 1, and the RV will be returned. |
954c1994 GS |
8267 | |
8268 | =cut | |
8269 | */ | |
8270 | ||
a0d0e21e | 8271 | SV* |
65202027 | 8272 | Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv) |
a0d0e21e LW |
8273 | { |
8274 | sv_setnv(newSVrv(rv,classname), nv); | |
8275 | return rv; | |
8276 | } | |
463ee0b2 | 8277 | |
954c1994 GS |
8278 | /* |
8279 | =for apidoc sv_setref_pvn | |
8280 | ||
8281 | Copies a string into a new SV, optionally blessing the SV. The length of the | |
8282 | string must be specified with C<n>. The C<rv> argument will be upgraded to | |
8283 | an RV. That RV will be modified to point to the new SV. The C<classname> | |
8284 | argument indicates the package for the blessing. Set C<classname> to | |
7a5fa8a2 | 8285 | C<Nullch> to avoid the blessing. The new SV will have a reference count |
d34c2299 | 8286 | of 1, and the RV will be returned. |
954c1994 GS |
8287 | |
8288 | Note that C<sv_setref_pv> copies the pointer while this copies the string. | |
8289 | ||
8290 | =cut | |
8291 | */ | |
8292 | ||
a0d0e21e | 8293 | SV* |
1b6737cc | 8294 | Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, const char *pv, STRLEN n) |
a0d0e21e LW |
8295 | { |
8296 | sv_setpvn(newSVrv(rv,classname), pv, n); | |
463ee0b2 LW |
8297 | return rv; |
8298 | } | |
8299 | ||
954c1994 GS |
8300 | /* |
8301 | =for apidoc sv_bless | |
8302 | ||
8303 | Blesses an SV into a specified package. The SV must be an RV. The package | |
8304 | must be designated by its stash (see C<gv_stashpv()>). The reference count | |
8305 | of the SV is unaffected. | |
8306 | ||
8307 | =cut | |
8308 | */ | |
8309 | ||
a0d0e21e | 8310 | SV* |
864dbfa3 | 8311 | Perl_sv_bless(pTHX_ SV *sv, HV *stash) |
a0d0e21e | 8312 | { |
76e3520e | 8313 | SV *tmpRef; |
a0d0e21e | 8314 | if (!SvROK(sv)) |
cea2e8a9 | 8315 | Perl_croak(aTHX_ "Can't bless non-reference value"); |
76e3520e GS |
8316 | tmpRef = SvRV(sv); |
8317 | if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) { | |
8318 | if (SvREADONLY(tmpRef)) | |
cea2e8a9 | 8319 | Perl_croak(aTHX_ PL_no_modify); |
76e3520e GS |
8320 | if (SvOBJECT(tmpRef)) { |
8321 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8322 | --PL_sv_objcount; |
76e3520e | 8323 | SvREFCNT_dec(SvSTASH(tmpRef)); |
2e3febc6 | 8324 | } |
a0d0e21e | 8325 | } |
76e3520e GS |
8326 | SvOBJECT_on(tmpRef); |
8327 | if (SvTYPE(tmpRef) != SVt_PVIO) | |
3280af22 | 8328 | ++PL_sv_objcount; |
862a34c6 | 8329 | SvUPGRADE(tmpRef, SVt_PVMG); |
b162af07 | 8330 | SvSTASH_set(tmpRef, (HV*)SvREFCNT_inc(stash)); |
a0d0e21e | 8331 | |
2e3febc6 CS |
8332 | if (Gv_AMG(stash)) |
8333 | SvAMAGIC_on(sv); | |
8334 | else | |
8335 | SvAMAGIC_off(sv); | |
a0d0e21e | 8336 | |
1edbfb88 AB |
8337 | if(SvSMAGICAL(tmpRef)) |
8338 | if(mg_find(tmpRef, PERL_MAGIC_ext) || mg_find(tmpRef, PERL_MAGIC_uvar)) | |
8339 | mg_set(tmpRef); | |
8340 | ||
8341 | ||
ecdeb87c | 8342 | |
a0d0e21e LW |
8343 | return sv; |
8344 | } | |
8345 | ||
645c22ef | 8346 | /* Downgrades a PVGV to a PVMG. |
645c22ef DM |
8347 | */ |
8348 | ||
76e3520e | 8349 | STATIC void |
cea2e8a9 | 8350 | S_sv_unglob(pTHX_ SV *sv) |
a0d0e21e | 8351 | { |
850fabdf GS |
8352 | void *xpvmg; |
8353 | ||
a0d0e21e LW |
8354 | assert(SvTYPE(sv) == SVt_PVGV); |
8355 | SvFAKE_off(sv); | |
8356 | if (GvGP(sv)) | |
1edc1566 | 8357 | gp_free((GV*)sv); |
e826b3c7 GS |
8358 | if (GvSTASH(sv)) { |
8359 | SvREFCNT_dec(GvSTASH(sv)); | |
8360 | GvSTASH(sv) = Nullhv; | |
8361 | } | |
14befaf4 | 8362 | sv_unmagic(sv, PERL_MAGIC_glob); |
a0d0e21e | 8363 | Safefree(GvNAME(sv)); |
a5f75d66 | 8364 | GvMULTI_off(sv); |
850fabdf GS |
8365 | |
8366 | /* need to keep SvANY(sv) in the right arena */ | |
8367 | xpvmg = new_XPVMG(); | |
8368 | StructCopy(SvANY(sv), xpvmg, XPVMG); | |
8369 | del_XPVGV(SvANY(sv)); | |
8370 | SvANY(sv) = xpvmg; | |
8371 | ||
a0d0e21e LW |
8372 | SvFLAGS(sv) &= ~SVTYPEMASK; |
8373 | SvFLAGS(sv) |= SVt_PVMG; | |
8374 | } | |
8375 | ||
954c1994 | 8376 | /* |
840a7b70 | 8377 | =for apidoc sv_unref_flags |
954c1994 GS |
8378 | |
8379 | Unsets the RV status of the SV, and decrements the reference count of | |
8380 | whatever was being referenced by the RV. This can almost be thought of | |
840a7b70 IZ |
8381 | as a reversal of C<newSVrv>. The C<cflags> argument can contain |
8382 | C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented | |
8383 | (otherwise the decrementing is conditional on the reference count being | |
8384 | different from one or the reference being a readonly SV). | |
7889fe52 | 8385 | See C<SvROK_off>. |
954c1994 GS |
8386 | |
8387 | =cut | |
8388 | */ | |
8389 | ||
ed6116ce | 8390 | void |
840a7b70 | 8391 | Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags) |
ed6116ce | 8392 | { |
a0d0e21e | 8393 | SV* rv = SvRV(sv); |
810b8aa5 GS |
8394 | |
8395 | if (SvWEAKREF(sv)) { | |
8396 | sv_del_backref(sv); | |
8397 | SvWEAKREF_off(sv); | |
b162af07 | 8398 | SvRV_set(sv, NULL); |
810b8aa5 GS |
8399 | return; |
8400 | } | |
b162af07 | 8401 | SvRV_set(sv, NULL); |
ed6116ce | 8402 | SvROK_off(sv); |
04ca4930 NC |
8403 | /* You can't have a || SvREADONLY(rv) here, as $a = $$a, where $a was |
8404 | assigned to as BEGIN {$a = \"Foo"} will fail. */ | |
8405 | if (SvREFCNT(rv) != 1 || (flags & SV_IMMEDIATE_UNREF)) | |
4633a7c4 | 8406 | SvREFCNT_dec(rv); |
840a7b70 | 8407 | else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */ |
4633a7c4 | 8408 | sv_2mortal(rv); /* Schedule for freeing later */ |
ed6116ce | 8409 | } |
8990e307 | 8410 | |
840a7b70 IZ |
8411 | /* |
8412 | =for apidoc sv_unref | |
8413 | ||
8414 | Unsets the RV status of the SV, and decrements the reference count of | |
8415 | whatever was being referenced by the RV. This can almost be thought of | |
8416 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
7889fe52 | 8417 | being zero. See C<SvROK_off>. |
840a7b70 IZ |
8418 | |
8419 | =cut | |
8420 | */ | |
8421 | ||
8422 | void | |
8423 | Perl_sv_unref(pTHX_ SV *sv) | |
8424 | { | |
8425 | sv_unref_flags(sv, 0); | |
8426 | } | |
8427 | ||
645c22ef DM |
8428 | /* |
8429 | =for apidoc sv_taint | |
8430 | ||
8431 | Taint an SV. Use C<SvTAINTED_on> instead. | |
8432 | =cut | |
8433 | */ | |
8434 | ||
bbce6d69 | 8435 | void |
864dbfa3 | 8436 | Perl_sv_taint(pTHX_ SV *sv) |
bbce6d69 | 8437 | { |
14befaf4 | 8438 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); |
bbce6d69 | 8439 | } |
8440 | ||
645c22ef DM |
8441 | /* |
8442 | =for apidoc sv_untaint | |
8443 | ||
8444 | Untaint an SV. Use C<SvTAINTED_off> instead. | |
8445 | =cut | |
8446 | */ | |
8447 | ||
bbce6d69 | 8448 | void |
864dbfa3 | 8449 | Perl_sv_untaint(pTHX_ SV *sv) |
bbce6d69 | 8450 | { |
13f57bf8 | 8451 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
14befaf4 | 8452 | MAGIC *mg = mg_find(sv, PERL_MAGIC_taint); |
36477c24 | 8453 | if (mg) |
565764a8 | 8454 | mg->mg_len &= ~1; |
36477c24 | 8455 | } |
bbce6d69 | 8456 | } |
8457 | ||
645c22ef DM |
8458 | /* |
8459 | =for apidoc sv_tainted | |
8460 | ||
8461 | Test an SV for taintedness. Use C<SvTAINTED> instead. | |
8462 | =cut | |
8463 | */ | |
8464 | ||
bbce6d69 | 8465 | bool |
864dbfa3 | 8466 | Perl_sv_tainted(pTHX_ SV *sv) |
bbce6d69 | 8467 | { |
13f57bf8 | 8468 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
a28509cc | 8469 | MAGIC * const mg = mg_find(sv, PERL_MAGIC_taint); |
2ddb8a4f | 8470 | if (mg && (mg->mg_len & 1) ) |
36477c24 | 8471 | return TRUE; |
8472 | } | |
8473 | return FALSE; | |
bbce6d69 | 8474 | } |
8475 | ||
09540bc3 JH |
8476 | /* |
8477 | =for apidoc sv_setpviv | |
8478 | ||
8479 | Copies an integer into the given SV, also updating its string value. | |
8480 | Does not handle 'set' magic. See C<sv_setpviv_mg>. | |
8481 | ||
8482 | =cut | |
8483 | */ | |
8484 | ||
8485 | void | |
8486 | Perl_sv_setpviv(pTHX_ SV *sv, IV iv) | |
8487 | { | |
8488 | char buf[TYPE_CHARS(UV)]; | |
8489 | char *ebuf; | |
8490 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8491 | ||
8492 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8493 | } | |
8494 | ||
8495 | /* | |
8496 | =for apidoc sv_setpviv_mg | |
8497 | ||
8498 | Like C<sv_setpviv>, but also handles 'set' magic. | |
8499 | ||
8500 | =cut | |
8501 | */ | |
8502 | ||
8503 | void | |
8504 | Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv) | |
8505 | { | |
8506 | char buf[TYPE_CHARS(UV)]; | |
8507 | char *ebuf; | |
8508 | char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf); | |
8509 | ||
8510 | sv_setpvn(sv, ptr, ebuf - ptr); | |
8511 | SvSETMAGIC(sv); | |
8512 | } | |
8513 | ||
cea2e8a9 | 8514 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8515 | |
8516 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8517 | * version of the main function, (which may itself be aliased to us). | |
8518 | * Don't access this version directly. | |
8519 | */ | |
8520 | ||
cea2e8a9 GS |
8521 | void |
8522 | Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...) | |
8523 | { | |
8524 | dTHX; | |
8525 | va_list args; | |
8526 | va_start(args, pat); | |
c5be433b | 8527 | sv_vsetpvf(sv, pat, &args); |
cea2e8a9 GS |
8528 | va_end(args); |
8529 | } | |
8530 | ||
645c22ef DM |
8531 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8532 | * version of the main function, (which may itself be aliased to us). | |
8533 | * Don't access this version directly. | |
8534 | */ | |
cea2e8a9 GS |
8535 | |
8536 | void | |
8537 | Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8538 | { | |
8539 | dTHX; | |
8540 | va_list args; | |
8541 | va_start(args, pat); | |
c5be433b | 8542 | sv_vsetpvf_mg(sv, pat, &args); |
cea2e8a9 | 8543 | va_end(args); |
cea2e8a9 GS |
8544 | } |
8545 | #endif | |
8546 | ||
954c1994 GS |
8547 | /* |
8548 | =for apidoc sv_setpvf | |
8549 | ||
bffc3d17 SH |
8550 | Works like C<sv_catpvf> but copies the text into the SV instead of |
8551 | appending it. Does not handle 'set' magic. See C<sv_setpvf_mg>. | |
954c1994 GS |
8552 | |
8553 | =cut | |
8554 | */ | |
8555 | ||
46fc3d4c | 8556 | void |
864dbfa3 | 8557 | Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8558 | { |
8559 | va_list args; | |
46fc3d4c | 8560 | va_start(args, pat); |
c5be433b | 8561 | sv_vsetpvf(sv, pat, &args); |
46fc3d4c | 8562 | va_end(args); |
8563 | } | |
8564 | ||
bffc3d17 SH |
8565 | /* |
8566 | =for apidoc sv_vsetpvf | |
8567 | ||
8568 | Works like C<sv_vcatpvf> but copies the text into the SV instead of | |
8569 | appending it. Does not handle 'set' magic. See C<sv_vsetpvf_mg>. | |
8570 | ||
8571 | Usually used via its frontend C<sv_setpvf>. | |
8572 | ||
8573 | =cut | |
8574 | */ | |
645c22ef | 8575 | |
c5be433b GS |
8576 | void |
8577 | Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args) | |
8578 | { | |
8579 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8580 | } | |
ef50df4b | 8581 | |
954c1994 GS |
8582 | /* |
8583 | =for apidoc sv_setpvf_mg | |
8584 | ||
8585 | Like C<sv_setpvf>, but also handles 'set' magic. | |
8586 | ||
8587 | =cut | |
8588 | */ | |
8589 | ||
ef50df4b | 8590 | void |
864dbfa3 | 8591 | Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8592 | { |
8593 | va_list args; | |
ef50df4b | 8594 | va_start(args, pat); |
c5be433b | 8595 | sv_vsetpvf_mg(sv, pat, &args); |
ef50df4b | 8596 | va_end(args); |
c5be433b GS |
8597 | } |
8598 | ||
bffc3d17 SH |
8599 | /* |
8600 | =for apidoc sv_vsetpvf_mg | |
8601 | ||
8602 | Like C<sv_vsetpvf>, but also handles 'set' magic. | |
8603 | ||
8604 | Usually used via its frontend C<sv_setpvf_mg>. | |
8605 | ||
8606 | =cut | |
8607 | */ | |
645c22ef | 8608 | |
c5be433b GS |
8609 | void |
8610 | Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8611 | { | |
8612 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8613 | SvSETMAGIC(sv); |
8614 | } | |
8615 | ||
cea2e8a9 | 8616 | #if defined(PERL_IMPLICIT_CONTEXT) |
645c22ef DM |
8617 | |
8618 | /* pTHX_ magic can't cope with varargs, so this is a no-context | |
8619 | * version of the main function, (which may itself be aliased to us). | |
8620 | * Don't access this version directly. | |
8621 | */ | |
8622 | ||
cea2e8a9 GS |
8623 | void |
8624 | Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...) | |
8625 | { | |
8626 | dTHX; | |
8627 | va_list args; | |
8628 | va_start(args, pat); | |
c5be433b | 8629 | sv_vcatpvf(sv, pat, &args); |
cea2e8a9 GS |
8630 | va_end(args); |
8631 | } | |
8632 | ||
645c22ef DM |
8633 | /* pTHX_ magic can't cope with varargs, so this is a no-context |
8634 | * version of the main function, (which may itself be aliased to us). | |
8635 | * Don't access this version directly. | |
8636 | */ | |
8637 | ||
cea2e8a9 GS |
8638 | void |
8639 | Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...) | |
8640 | { | |
8641 | dTHX; | |
8642 | va_list args; | |
8643 | va_start(args, pat); | |
c5be433b | 8644 | sv_vcatpvf_mg(sv, pat, &args); |
cea2e8a9 | 8645 | va_end(args); |
cea2e8a9 GS |
8646 | } |
8647 | #endif | |
8648 | ||
954c1994 GS |
8649 | /* |
8650 | =for apidoc sv_catpvf | |
8651 | ||
d5ce4a7c GA |
8652 | Processes its arguments like C<sprintf> and appends the formatted |
8653 | output to an SV. If the appended data contains "wide" characters | |
8654 | (including, but not limited to, SVs with a UTF-8 PV formatted with %s, | |
8655 | and characters >255 formatted with %c), the original SV might get | |
bffc3d17 | 8656 | upgraded to UTF-8. Handles 'get' magic, but not 'set' magic. See |
cdd94ca7 NC |
8657 | C<sv_catpvf_mg>. If the original SV was UTF-8, the pattern should be |
8658 | valid UTF-8; if the original SV was bytes, the pattern should be too. | |
954c1994 | 8659 | |
d5ce4a7c | 8660 | =cut */ |
954c1994 | 8661 | |
46fc3d4c | 8662 | void |
864dbfa3 | 8663 | Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...) |
46fc3d4c | 8664 | { |
8665 | va_list args; | |
46fc3d4c | 8666 | va_start(args, pat); |
c5be433b | 8667 | sv_vcatpvf(sv, pat, &args); |
46fc3d4c | 8668 | va_end(args); |
8669 | } | |
8670 | ||
bffc3d17 SH |
8671 | /* |
8672 | =for apidoc sv_vcatpvf | |
8673 | ||
8674 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8675 | to an SV. Does not handle 'set' magic. See C<sv_vcatpvf_mg>. | |
8676 | ||
8677 | Usually used via its frontend C<sv_catpvf>. | |
8678 | ||
8679 | =cut | |
8680 | */ | |
645c22ef | 8681 | |
ef50df4b | 8682 | void |
c5be433b GS |
8683 | Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args) |
8684 | { | |
8685 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
8686 | } | |
8687 | ||
954c1994 GS |
8688 | /* |
8689 | =for apidoc sv_catpvf_mg | |
8690 | ||
8691 | Like C<sv_catpvf>, but also handles 'set' magic. | |
8692 | ||
8693 | =cut | |
8694 | */ | |
8695 | ||
c5be433b | 8696 | void |
864dbfa3 | 8697 | Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...) |
ef50df4b GS |
8698 | { |
8699 | va_list args; | |
ef50df4b | 8700 | va_start(args, pat); |
c5be433b | 8701 | sv_vcatpvf_mg(sv, pat, &args); |
ef50df4b | 8702 | va_end(args); |
c5be433b GS |
8703 | } |
8704 | ||
bffc3d17 SH |
8705 | /* |
8706 | =for apidoc sv_vcatpvf_mg | |
8707 | ||
8708 | Like C<sv_vcatpvf>, but also handles 'set' magic. | |
8709 | ||
8710 | Usually used via its frontend C<sv_catpvf_mg>. | |
8711 | ||
8712 | =cut | |
8713 | */ | |
645c22ef | 8714 | |
c5be433b GS |
8715 | void |
8716 | Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args) | |
8717 | { | |
8718 | sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
ef50df4b GS |
8719 | SvSETMAGIC(sv); |
8720 | } | |
8721 | ||
954c1994 GS |
8722 | /* |
8723 | =for apidoc sv_vsetpvfn | |
8724 | ||
bffc3d17 | 8725 | Works like C<sv_vcatpvfn> but copies the text into the SV instead of |
954c1994 GS |
8726 | appending it. |
8727 | ||
bffc3d17 | 8728 | Usually used via one of its frontends C<sv_vsetpvf> and C<sv_vsetpvf_mg>. |
645c22ef | 8729 | |
954c1994 GS |
8730 | =cut |
8731 | */ | |
8732 | ||
46fc3d4c | 8733 | void |
7d5ea4e7 | 8734 | Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8735 | { |
8736 | sv_setpvn(sv, "", 0); | |
7d5ea4e7 | 8737 | sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted); |
46fc3d4c | 8738 | } |
8739 | ||
645c22ef DM |
8740 | /* private function for use in sv_vcatpvfn via the EXPECT_NUMBER macro */ |
8741 | ||
2d00ba3b | 8742 | STATIC I32 |
9dd79c3f | 8743 | S_expect_number(pTHX_ char** pattern) |
211dfcf1 HS |
8744 | { |
8745 | I32 var = 0; | |
8746 | switch (**pattern) { | |
8747 | case '1': case '2': case '3': | |
8748 | case '4': case '5': case '6': | |
8749 | case '7': case '8': case '9': | |
8750 | while (isDIGIT(**pattern)) | |
8751 | var = var * 10 + (*(*pattern)++ - '0'); | |
8752 | } | |
8753 | return var; | |
8754 | } | |
9dd79c3f | 8755 | #define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern)) |
211dfcf1 | 8756 | |
4151a5fe IZ |
8757 | static char * |
8758 | F0convert(NV nv, char *endbuf, STRLEN *len) | |
8759 | { | |
a3b680e6 | 8760 | const int neg = nv < 0; |
4151a5fe | 8761 | UV uv; |
4151a5fe IZ |
8762 | |
8763 | if (neg) | |
8764 | nv = -nv; | |
8765 | if (nv < UV_MAX) { | |
b464bac0 | 8766 | char *p = endbuf; |
4151a5fe | 8767 | nv += 0.5; |
028f8eaa | 8768 | uv = (UV)nv; |
4151a5fe IZ |
8769 | if (uv & 1 && uv == nv) |
8770 | uv--; /* Round to even */ | |
8771 | do { | |
a3b680e6 | 8772 | const unsigned dig = uv % 10; |
4151a5fe IZ |
8773 | *--p = '0' + dig; |
8774 | } while (uv /= 10); | |
8775 | if (neg) | |
8776 | *--p = '-'; | |
8777 | *len = endbuf - p; | |
8778 | return p; | |
8779 | } | |
8780 | return Nullch; | |
8781 | } | |
8782 | ||
8783 | ||
954c1994 GS |
8784 | /* |
8785 | =for apidoc sv_vcatpvfn | |
8786 | ||
8787 | Processes its arguments like C<vsprintf> and appends the formatted output | |
8788 | to an SV. Uses an array of SVs if the C style variable argument list is | |
8789 | missing (NULL). When running with taint checks enabled, indicates via | |
8790 | C<maybe_tainted> if results are untrustworthy (often due to the use of | |
8791 | locales). | |
8792 | ||
bffc3d17 | 8793 | Usually used via one of its frontends C<sv_vcatpvf> and C<sv_vcatpvf_mg>. |
645c22ef | 8794 | |
954c1994 GS |
8795 | =cut |
8796 | */ | |
8797 | ||
1ef29b0e RGS |
8798 | /* XXX maybe_tainted is never assigned to, so the doc above is lying. */ |
8799 | ||
46fc3d4c | 8800 | void |
7d5ea4e7 | 8801 | Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted) |
46fc3d4c | 8802 | { |
8803 | char *p; | |
8804 | char *q; | |
a3b680e6 | 8805 | const char *patend; |
fc36a67e | 8806 | STRLEN origlen; |
46fc3d4c | 8807 | I32 svix = 0; |
27da23d5 | 8808 | static const char nullstr[] = "(null)"; |
9c5ffd7c | 8809 | SV *argsv = Nullsv; |
b464bac0 AL |
8810 | bool has_utf8 = DO_UTF8(sv); /* has the result utf8? */ |
8811 | const bool pat_utf8 = has_utf8; /* the pattern is in utf8? */ | |
db79b45b | 8812 | SV *nsv = Nullsv; |
4151a5fe IZ |
8813 | /* Times 4: a decimal digit takes more than 3 binary digits. |
8814 | * NV_DIG: mantissa takes than many decimal digits. | |
8815 | * Plus 32: Playing safe. */ | |
8816 | char ebuf[IV_DIG * 4 + NV_DIG + 32]; | |
8817 | /* large enough for "%#.#f" --chip */ | |
8818 | /* what about long double NVs? --jhi */ | |
db79b45b | 8819 | |
53c1dcc0 AL |
8820 | PERL_UNUSED_ARG(maybe_tainted); |
8821 | ||
46fc3d4c | 8822 | /* no matter what, this is a string now */ |
fc36a67e | 8823 | (void)SvPV_force(sv, origlen); |
46fc3d4c | 8824 | |
0dbb1585 | 8825 | /* special-case "", "%s", and "%-p" (SVf) */ |
46fc3d4c | 8826 | if (patlen == 0) |
8827 | return; | |
0dbb1585 | 8828 | if (patlen == 2 && pat[0] == '%' && pat[1] == 's') { |
c635e13b | 8829 | if (args) { |
53c1dcc0 | 8830 | const char * const s = va_arg(*args, char*); |
c635e13b | 8831 | sv_catpv(sv, s ? s : nullstr); |
8832 | } | |
7e2040f0 | 8833 | else if (svix < svmax) { |
fc36a67e | 8834 | sv_catsv(sv, *svargs); |
7e2040f0 GS |
8835 | if (DO_UTF8(*svargs)) |
8836 | SvUTF8_on(sv); | |
8837 | } | |
fc36a67e | 8838 | return; |
0dbb1585 AL |
8839 | } |
8840 | if (patlen == 3 && pat[0] == '%' && | |
8841 | pat[1] == '-' && pat[2] == 'p') { | |
fc36a67e | 8842 | if (args) { |
7e2040f0 GS |
8843 | argsv = va_arg(*args, SV*); |
8844 | sv_catsv(sv, argsv); | |
8845 | if (DO_UTF8(argsv)) | |
8846 | SvUTF8_on(sv); | |
fc36a67e | 8847 | return; |
8848 | } | |
46fc3d4c | 8849 | } |
8850 | ||
1d917b39 | 8851 | #ifndef USE_LONG_DOUBLE |
4151a5fe | 8852 | /* special-case "%.<number>[gf]" */ |
7af36d83 | 8853 | if ( !args && patlen <= 5 && pat[0] == '%' && pat[1] == '.' |
4151a5fe IZ |
8854 | && (pat[patlen-1] == 'g' || pat[patlen-1] == 'f') ) { |
8855 | unsigned digits = 0; | |
8856 | const char *pp; | |
8857 | ||
8858 | pp = pat + 2; | |
8859 | while (*pp >= '0' && *pp <= '9') | |
8860 | digits = 10 * digits + (*pp++ - '0'); | |
028f8eaa | 8861 | if (pp - pat == (int)patlen - 1) { |
4151a5fe IZ |
8862 | NV nv; |
8863 | ||
7af36d83 | 8864 | if (svix < svmax) |
4151a5fe IZ |
8865 | nv = SvNV(*svargs); |
8866 | else | |
8867 | return; | |
8868 | if (*pp == 'g') { | |
2873255c NC |
8869 | /* Add check for digits != 0 because it seems that some |
8870 | gconverts are buggy in this case, and we don't yet have | |
8871 | a Configure test for this. */ | |
8872 | if (digits && digits < sizeof(ebuf) - NV_DIG - 10) { | |
8873 | /* 0, point, slack */ | |
2e59c212 | 8874 | Gconvert(nv, (int)digits, 0, ebuf); |
4151a5fe IZ |
8875 | sv_catpv(sv, ebuf); |
8876 | if (*ebuf) /* May return an empty string for digits==0 */ | |
8877 | return; | |
8878 | } | |
8879 | } else if (!digits) { | |
8880 | STRLEN l; | |
8881 | ||
8882 | if ((p = F0convert(nv, ebuf + sizeof ebuf, &l))) { | |
8883 | sv_catpvn(sv, p, l); | |
8884 | return; | |
8885 | } | |
8886 | } | |
8887 | } | |
8888 | } | |
1d917b39 | 8889 | #endif /* !USE_LONG_DOUBLE */ |
4151a5fe | 8890 | |
2cf2cfc6 | 8891 | if (!args && svix < svmax && DO_UTF8(*svargs)) |
205f51d8 | 8892 | has_utf8 = TRUE; |
2cf2cfc6 | 8893 | |
46fc3d4c | 8894 | patend = (char*)pat + patlen; |
8895 | for (p = (char*)pat; p < patend; p = q) { | |
8896 | bool alt = FALSE; | |
8897 | bool left = FALSE; | |
b22c7a20 | 8898 | bool vectorize = FALSE; |
211dfcf1 | 8899 | bool vectorarg = FALSE; |
2cf2cfc6 | 8900 | bool vec_utf8 = FALSE; |
46fc3d4c | 8901 | char fill = ' '; |
8902 | char plus = 0; | |
8903 | char intsize = 0; | |
8904 | STRLEN width = 0; | |
fc36a67e | 8905 | STRLEN zeros = 0; |
46fc3d4c | 8906 | bool has_precis = FALSE; |
8907 | STRLEN precis = 0; | |
58e33a90 | 8908 | I32 osvix = svix; |
2cf2cfc6 | 8909 | bool is_utf8 = FALSE; /* is this item utf8? */ |
20f6aaab AS |
8910 | #ifdef HAS_LDBL_SPRINTF_BUG |
8911 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 | 8912 | with sfio - Allen <allens@cpan.org> */ |
20f6aaab AS |
8913 | bool fix_ldbl_sprintf_bug = FALSE; |
8914 | #endif | |
205f51d8 | 8915 | |
46fc3d4c | 8916 | char esignbuf[4]; |
89ebb4a3 | 8917 | U8 utf8buf[UTF8_MAXBYTES+1]; |
46fc3d4c | 8918 | STRLEN esignlen = 0; |
8919 | ||
4d84ee25 | 8920 | const char *eptr = Nullch; |
fc36a67e | 8921 | STRLEN elen = 0; |
81f715da | 8922 | SV *vecsv = Nullsv; |
245d4a47 | 8923 | const U8 *vecstr = Null(U8*); |
b22c7a20 | 8924 | STRLEN veclen = 0; |
934abaf1 | 8925 | char c = 0; |
46fc3d4c | 8926 | int i; |
9c5ffd7c | 8927 | unsigned base = 0; |
8c8eb53c RB |
8928 | IV iv = 0; |
8929 | UV uv = 0; | |
9e5b023a JH |
8930 | /* we need a long double target in case HAS_LONG_DOUBLE but |
8931 | not USE_LONG_DOUBLE | |
8932 | */ | |
35fff930 | 8933 | #if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE > DOUBLESIZE |
9e5b023a JH |
8934 | long double nv; |
8935 | #else | |
65202027 | 8936 | NV nv; |
9e5b023a | 8937 | #endif |
46fc3d4c | 8938 | STRLEN have; |
8939 | STRLEN need; | |
8940 | STRLEN gap; | |
7af36d83 | 8941 | const char *dotstr = "."; |
b22c7a20 | 8942 | STRLEN dotstrlen = 1; |
211dfcf1 | 8943 | I32 efix = 0; /* explicit format parameter index */ |
eb3fce90 | 8944 | I32 ewix = 0; /* explicit width index */ |
211dfcf1 HS |
8945 | I32 epix = 0; /* explicit precision index */ |
8946 | I32 evix = 0; /* explicit vector index */ | |
eb3fce90 | 8947 | bool asterisk = FALSE; |
46fc3d4c | 8948 | |
211dfcf1 | 8949 | /* echo everything up to the next format specification */ |
46fc3d4c | 8950 | for (q = p; q < patend && *q != '%'; ++q) ; |
8951 | if (q > p) { | |
db79b45b JH |
8952 | if (has_utf8 && !pat_utf8) |
8953 | sv_catpvn_utf8_upgrade(sv, p, q - p, nsv); | |
8954 | else | |
8955 | sv_catpvn(sv, p, q - p); | |
46fc3d4c | 8956 | p = q; |
8957 | } | |
8958 | if (q++ >= patend) | |
8959 | break; | |
8960 | ||
211dfcf1 HS |
8961 | /* |
8962 | We allow format specification elements in this order: | |
8963 | \d+\$ explicit format parameter index | |
8964 | [-+ 0#]+ flags | |
a472f209 | 8965 | v|\*(\d+\$)?v vector with optional (optionally specified) arg |
f3583277 | 8966 | 0 flag (as above): repeated to allow "v02" |
211dfcf1 HS |
8967 | \d+|\*(\d+\$)? width using optional (optionally specified) arg |
8968 | \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg | |
8969 | [hlqLV] size | |
8970 | [%bcdefginopsux_DFOUX] format (mandatory) | |
8971 | */ | |
8972 | if (EXPECT_NUMBER(q, width)) { | |
8973 | if (*q == '$') { | |
8974 | ++q; | |
8975 | efix = width; | |
8976 | } else { | |
8977 | goto gotwidth; | |
8978 | } | |
8979 | } | |
8980 | ||
fc36a67e | 8981 | /* FLAGS */ |
8982 | ||
46fc3d4c | 8983 | while (*q) { |
8984 | switch (*q) { | |
8985 | case ' ': | |
8986 | case '+': | |
8987 | plus = *q++; | |
8988 | continue; | |
8989 | ||
8990 | case '-': | |
8991 | left = TRUE; | |
8992 | q++; | |
8993 | continue; | |
8994 | ||
8995 | case '0': | |
8996 | fill = *q++; | |
8997 | continue; | |
8998 | ||
8999 | case '#': | |
9000 | alt = TRUE; | |
9001 | q++; | |
9002 | continue; | |
9003 | ||
fc36a67e | 9004 | default: |
9005 | break; | |
9006 | } | |
9007 | break; | |
9008 | } | |
46fc3d4c | 9009 | |
211dfcf1 | 9010 | tryasterisk: |
eb3fce90 | 9011 | if (*q == '*') { |
211dfcf1 HS |
9012 | q++; |
9013 | if (EXPECT_NUMBER(q, ewix)) | |
9014 | if (*q++ != '$') | |
9015 | goto unknown; | |
eb3fce90 | 9016 | asterisk = TRUE; |
211dfcf1 HS |
9017 | } |
9018 | if (*q == 'v') { | |
eb3fce90 | 9019 | q++; |
211dfcf1 HS |
9020 | if (vectorize) |
9021 | goto unknown; | |
9cbac4c7 | 9022 | if ((vectorarg = asterisk)) { |
211dfcf1 HS |
9023 | evix = ewix; |
9024 | ewix = 0; | |
9025 | asterisk = FALSE; | |
9026 | } | |
9027 | vectorize = TRUE; | |
9028 | goto tryasterisk; | |
eb3fce90 JH |
9029 | } |
9030 | ||
211dfcf1 | 9031 | if (!asterisk) |
7a5fa8a2 | 9032 | if( *q == '0' ) |
f3583277 | 9033 | fill = *q++; |
211dfcf1 HS |
9034 | EXPECT_NUMBER(q, width); |
9035 | ||
9036 | if (vectorize) { | |
9037 | if (vectorarg) { | |
9038 | if (args) | |
9039 | vecsv = va_arg(*args, SV*); | |
9040 | else | |
9041 | vecsv = (evix ? evix <= svmax : svix < svmax) ? | |
3a7a539e | 9042 | svargs[evix ? evix-1 : svix++] : &PL_sv_undef; |
245d4a47 | 9043 | dotstr = SvPV_const(vecsv, dotstrlen); |
211dfcf1 | 9044 | if (DO_UTF8(vecsv)) |
2cf2cfc6 | 9045 | is_utf8 = TRUE; |
211dfcf1 HS |
9046 | } |
9047 | if (args) { | |
9048 | vecsv = va_arg(*args, SV*); | |
245d4a47 | 9049 | vecstr = (U8*)SvPV_const(vecsv,veclen); |
2cf2cfc6 | 9050 | vec_utf8 = DO_UTF8(vecsv); |
eb3fce90 | 9051 | } |
211dfcf1 HS |
9052 | else if (efix ? efix <= svmax : svix < svmax) { |
9053 | vecsv = svargs[efix ? efix-1 : svix++]; | |
245d4a47 | 9054 | vecstr = (U8*)SvPV_const(vecsv,veclen); |
2cf2cfc6 | 9055 | vec_utf8 = DO_UTF8(vecsv); |
d7aa5382 | 9056 | /* if this is a version object, we need to return the |
3f7c398e | 9057 | * stringified representation (which the SvPVX_const has |
d7aa5382 JP |
9058 | * already done for us), but not vectorize the args |
9059 | */ | |
9060 | if ( *q == 'd' && sv_derived_from(vecsv,"version") ) | |
9061 | { | |
9062 | q++; /* skip past the rest of the %vd format */ | |
245d4a47 | 9063 | eptr = (const char *) vecstr; |
d7aa5382 JP |
9064 | elen = strlen(eptr); |
9065 | vectorize=FALSE; | |
9066 | goto string; | |
9067 | } | |
211dfcf1 HS |
9068 | } |
9069 | else { | |
9070 | vecstr = (U8*)""; | |
9071 | veclen = 0; | |
9072 | } | |
eb3fce90 | 9073 | } |
fc36a67e | 9074 | |
eb3fce90 | 9075 | if (asterisk) { |
fc36a67e | 9076 | if (args) |
9077 | i = va_arg(*args, int); | |
9078 | else | |
eb3fce90 JH |
9079 | i = (ewix ? ewix <= svmax : svix < svmax) ? |
9080 | SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9081 | left |= (i < 0); |
9082 | width = (i < 0) ? -i : i; | |
fc36a67e | 9083 | } |
211dfcf1 | 9084 | gotwidth: |
fc36a67e | 9085 | |
9086 | /* PRECISION */ | |
46fc3d4c | 9087 | |
fc36a67e | 9088 | if (*q == '.') { |
9089 | q++; | |
9090 | if (*q == '*') { | |
211dfcf1 | 9091 | q++; |
7b8dd722 HS |
9092 | if (EXPECT_NUMBER(q, epix) && *q++ != '$') |
9093 | goto unknown; | |
9094 | /* XXX: todo, support specified precision parameter */ | |
9095 | if (epix) | |
211dfcf1 | 9096 | goto unknown; |
46fc3d4c | 9097 | if (args) |
9098 | i = va_arg(*args, int); | |
9099 | else | |
eb3fce90 JH |
9100 | i = (ewix ? ewix <= svmax : svix < svmax) |
9101 | ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0; | |
fc36a67e | 9102 | precis = (i < 0) ? 0 : i; |
fc36a67e | 9103 | } |
9104 | else { | |
9105 | precis = 0; | |
9106 | while (isDIGIT(*q)) | |
9107 | precis = precis * 10 + (*q++ - '0'); | |
9108 | } | |
9109 | has_precis = TRUE; | |
9110 | } | |
46fc3d4c | 9111 | |
fc36a67e | 9112 | /* SIZE */ |
46fc3d4c | 9113 | |
fc36a67e | 9114 | switch (*q) { |
c623ac67 GS |
9115 | #ifdef WIN32 |
9116 | case 'I': /* Ix, I32x, and I64x */ | |
9117 | # ifdef WIN64 | |
9118 | if (q[1] == '6' && q[2] == '4') { | |
9119 | q += 3; | |
9120 | intsize = 'q'; | |
9121 | break; | |
9122 | } | |
9123 | # endif | |
9124 | if (q[1] == '3' && q[2] == '2') { | |
9125 | q += 3; | |
9126 | break; | |
9127 | } | |
9128 | # ifdef WIN64 | |
9129 | intsize = 'q'; | |
9130 | # endif | |
9131 | q++; | |
9132 | break; | |
9133 | #endif | |
9e5b023a | 9134 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
6f9bb7fd | 9135 | case 'L': /* Ld */ |
e5c81feb | 9136 | /* FALL THROUGH */ |
e5c81feb | 9137 | #ifdef HAS_QUAD |
6f9bb7fd | 9138 | case 'q': /* qd */ |
9e5b023a | 9139 | #endif |
6f9bb7fd GS |
9140 | intsize = 'q'; |
9141 | q++; | |
9142 | break; | |
9143 | #endif | |
fc36a67e | 9144 | case 'l': |
9e5b023a | 9145 | #if defined(HAS_QUAD) || defined(HAS_LONG_DOUBLE) |
205f51d8 | 9146 | if (*(q + 1) == 'l') { /* lld, llf */ |
fc36a67e | 9147 | intsize = 'q'; |
9148 | q += 2; | |
46fc3d4c | 9149 | break; |
cf2093f6 | 9150 | } |
fc36a67e | 9151 | #endif |
6f9bb7fd | 9152 | /* FALL THROUGH */ |
fc36a67e | 9153 | case 'h': |
cf2093f6 | 9154 | /* FALL THROUGH */ |
fc36a67e | 9155 | case 'V': |
9156 | intsize = *q++; | |
46fc3d4c | 9157 | break; |
9158 | } | |
9159 | ||
fc36a67e | 9160 | /* CONVERSION */ |
9161 | ||
211dfcf1 HS |
9162 | if (*q == '%') { |
9163 | eptr = q++; | |
9164 | elen = 1; | |
9165 | goto string; | |
9166 | } | |
9167 | ||
be75b157 HS |
9168 | if (vectorize) |
9169 | argsv = vecsv; | |
9170 | else if (!args) | |
211dfcf1 HS |
9171 | argsv = (efix ? efix <= svmax : svix < svmax) ? |
9172 | svargs[efix ? efix-1 : svix++] : &PL_sv_undef; | |
9173 | ||
46fc3d4c | 9174 | switch (c = *q++) { |
9175 | ||
9176 | /* STRINGS */ | |
9177 | ||
46fc3d4c | 9178 | case 'c': |
be75b157 | 9179 | uv = (args && !vectorize) ? va_arg(*args, int) : SvIVx(argsv); |
1bd104fb JH |
9180 | if ((uv > 255 || |
9181 | (!UNI_IS_INVARIANT(uv) && SvUTF8(sv))) | |
0064a8a9 | 9182 | && !IN_BYTES) { |
dfe13c55 | 9183 | eptr = (char*)utf8buf; |
9041c2e3 | 9184 | elen = uvchr_to_utf8((U8*)eptr, uv) - utf8buf; |
2cf2cfc6 | 9185 | is_utf8 = TRUE; |
7e2040f0 GS |
9186 | } |
9187 | else { | |
9188 | c = (char)uv; | |
9189 | eptr = &c; | |
9190 | elen = 1; | |
a0ed51b3 | 9191 | } |
46fc3d4c | 9192 | goto string; |
9193 | ||
46fc3d4c | 9194 | case 's': |
be75b157 | 9195 | if (args && !vectorize) { |
fc36a67e | 9196 | eptr = va_arg(*args, char*); |
c635e13b | 9197 | if (eptr) |
1d7c1841 GS |
9198 | #ifdef MACOS_TRADITIONAL |
9199 | /* On MacOS, %#s format is used for Pascal strings */ | |
9200 | if (alt) | |
9201 | elen = *eptr++; | |
9202 | else | |
9203 | #endif | |
c635e13b | 9204 | elen = strlen(eptr); |
9205 | else { | |
27da23d5 | 9206 | eptr = (char *)nullstr; |
c635e13b | 9207 | elen = sizeof nullstr - 1; |
9208 | } | |
46fc3d4c | 9209 | } |
211dfcf1 | 9210 | else { |
4d84ee25 | 9211 | eptr = SvPVx_const(argsv, elen); |
7e2040f0 | 9212 | if (DO_UTF8(argsv)) { |
a0ed51b3 LW |
9213 | if (has_precis && precis < elen) { |
9214 | I32 p = precis; | |
7e2040f0 | 9215 | sv_pos_u2b(argsv, &p, 0); /* sticks at end */ |
a0ed51b3 LW |
9216 | precis = p; |
9217 | } | |
9218 | if (width) { /* fudge width (can't fudge elen) */ | |
7e2040f0 | 9219 | width += elen - sv_len_utf8(argsv); |
a0ed51b3 | 9220 | } |
2cf2cfc6 | 9221 | is_utf8 = TRUE; |
a0ed51b3 LW |
9222 | } |
9223 | } | |
fc36a67e | 9224 | |
46fc3d4c | 9225 | string: |
b22c7a20 | 9226 | vectorize = FALSE; |
46fc3d4c | 9227 | if (has_precis && elen > precis) |
9228 | elen = precis; | |
9229 | break; | |
9230 | ||
9231 | /* INTEGERS */ | |
9232 | ||
fc36a67e | 9233 | case 'p': |
0dbb1585 | 9234 | if (left && args) { /* SVf */ |
5df617be | 9235 | left = FALSE; |
0dbb1585 AL |
9236 | if (width) { |
9237 | precis = width; | |
9238 | has_precis = TRUE; | |
9239 | width = 0; | |
9240 | } | |
9241 | if (vectorize) | |
9242 | goto unknown; | |
9243 | argsv = va_arg(*args, SV*); | |
4d84ee25 | 9244 | eptr = SvPVx_const(argsv, elen); |
0dbb1585 AL |
9245 | if (DO_UTF8(argsv)) |
9246 | is_utf8 = TRUE; | |
9247 | goto string; | |
5df617be | 9248 | } |
be75b157 | 9249 | if (alt || vectorize) |
c2e66d9e | 9250 | goto unknown; |
211dfcf1 | 9251 | uv = PTR2UV(args ? va_arg(*args, void*) : argsv); |
fc36a67e | 9252 | base = 16; |
9253 | goto integer; | |
9254 | ||
46fc3d4c | 9255 | case 'D': |
29fe7a80 | 9256 | #ifdef IV_IS_QUAD |
22f3ae8c | 9257 | intsize = 'q'; |
29fe7a80 | 9258 | #else |
46fc3d4c | 9259 | intsize = 'l'; |
29fe7a80 | 9260 | #endif |
46fc3d4c | 9261 | /* FALL THROUGH */ |
9262 | case 'd': | |
9263 | case 'i': | |
b22c7a20 | 9264 | if (vectorize) { |
ba210ebe | 9265 | STRLEN ulen; |
211dfcf1 HS |
9266 | if (!veclen) |
9267 | continue; | |
2cf2cfc6 A |
9268 | if (vec_utf8) |
9269 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9270 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9271 | else { |
e83d50c9 | 9272 | uv = *vecstr; |
b22c7a20 GS |
9273 | ulen = 1; |
9274 | } | |
9275 | vecstr += ulen; | |
9276 | veclen -= ulen; | |
e83d50c9 JP |
9277 | if (plus) |
9278 | esignbuf[esignlen++] = plus; | |
b22c7a20 GS |
9279 | } |
9280 | else if (args) { | |
46fc3d4c | 9281 | switch (intsize) { |
9282 | case 'h': iv = (short)va_arg(*args, int); break; | |
46fc3d4c | 9283 | case 'l': iv = va_arg(*args, long); break; |
fc36a67e | 9284 | case 'V': iv = va_arg(*args, IV); break; |
b10c0dba | 9285 | default: iv = va_arg(*args, int); break; |
cf2093f6 JH |
9286 | #ifdef HAS_QUAD |
9287 | case 'q': iv = va_arg(*args, Quad_t); break; | |
9288 | #endif | |
46fc3d4c | 9289 | } |
9290 | } | |
9291 | else { | |
b10c0dba | 9292 | IV tiv = SvIVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9293 | switch (intsize) { |
b10c0dba MHM |
9294 | case 'h': iv = (short)tiv; break; |
9295 | case 'l': iv = (long)tiv; break; | |
9296 | case 'V': | |
9297 | default: iv = tiv; break; | |
cf2093f6 | 9298 | #ifdef HAS_QUAD |
b10c0dba | 9299 | case 'q': iv = (Quad_t)tiv; break; |
cf2093f6 | 9300 | #endif |
46fc3d4c | 9301 | } |
9302 | } | |
e83d50c9 JP |
9303 | if ( !vectorize ) /* we already set uv above */ |
9304 | { | |
9305 | if (iv >= 0) { | |
9306 | uv = iv; | |
9307 | if (plus) | |
9308 | esignbuf[esignlen++] = plus; | |
9309 | } | |
9310 | else { | |
9311 | uv = -iv; | |
9312 | esignbuf[esignlen++] = '-'; | |
9313 | } | |
46fc3d4c | 9314 | } |
9315 | base = 10; | |
9316 | goto integer; | |
9317 | ||
fc36a67e | 9318 | case 'U': |
29fe7a80 | 9319 | #ifdef IV_IS_QUAD |
22f3ae8c | 9320 | intsize = 'q'; |
29fe7a80 | 9321 | #else |
fc36a67e | 9322 | intsize = 'l'; |
29fe7a80 | 9323 | #endif |
fc36a67e | 9324 | /* FALL THROUGH */ |
9325 | case 'u': | |
9326 | base = 10; | |
9327 | goto uns_integer; | |
9328 | ||
4f19785b WSI |
9329 | case 'b': |
9330 | base = 2; | |
9331 | goto uns_integer; | |
9332 | ||
46fc3d4c | 9333 | case 'O': |
29fe7a80 | 9334 | #ifdef IV_IS_QUAD |
22f3ae8c | 9335 | intsize = 'q'; |
29fe7a80 | 9336 | #else |
46fc3d4c | 9337 | intsize = 'l'; |
29fe7a80 | 9338 | #endif |
46fc3d4c | 9339 | /* FALL THROUGH */ |
9340 | case 'o': | |
9341 | base = 8; | |
9342 | goto uns_integer; | |
9343 | ||
9344 | case 'X': | |
46fc3d4c | 9345 | case 'x': |
9346 | base = 16; | |
46fc3d4c | 9347 | |
9348 | uns_integer: | |
b22c7a20 | 9349 | if (vectorize) { |
ba210ebe | 9350 | STRLEN ulen; |
b22c7a20 | 9351 | vector: |
211dfcf1 HS |
9352 | if (!veclen) |
9353 | continue; | |
2cf2cfc6 A |
9354 | if (vec_utf8) |
9355 | uv = utf8n_to_uvchr(vecstr, veclen, &ulen, | |
9356 | UTF8_ALLOW_ANYUV); | |
b22c7a20 | 9357 | else { |
a05b299f | 9358 | uv = *vecstr; |
b22c7a20 GS |
9359 | ulen = 1; |
9360 | } | |
9361 | vecstr += ulen; | |
9362 | veclen -= ulen; | |
9363 | } | |
9364 | else if (args) { | |
46fc3d4c | 9365 | switch (intsize) { |
9366 | case 'h': uv = (unsigned short)va_arg(*args, unsigned); break; | |
46fc3d4c | 9367 | case 'l': uv = va_arg(*args, unsigned long); break; |
fc36a67e | 9368 | case 'V': uv = va_arg(*args, UV); break; |
b10c0dba | 9369 | default: uv = va_arg(*args, unsigned); break; |
cf2093f6 | 9370 | #ifdef HAS_QUAD |
9e3321a5 | 9371 | case 'q': uv = va_arg(*args, Uquad_t); break; |
cf2093f6 | 9372 | #endif |
46fc3d4c | 9373 | } |
9374 | } | |
9375 | else { | |
b10c0dba | 9376 | UV tuv = SvUVx(argsv); /* work around GCC bug #13488 */ |
46fc3d4c | 9377 | switch (intsize) { |
b10c0dba MHM |
9378 | case 'h': uv = (unsigned short)tuv; break; |
9379 | case 'l': uv = (unsigned long)tuv; break; | |
9380 | case 'V': | |
9381 | default: uv = tuv; break; | |
cf2093f6 | 9382 | #ifdef HAS_QUAD |
b10c0dba | 9383 | case 'q': uv = (Uquad_t)tuv; break; |
cf2093f6 | 9384 | #endif |
46fc3d4c | 9385 | } |
9386 | } | |
9387 | ||
9388 | integer: | |
4d84ee25 NC |
9389 | { |
9390 | char *ptr = ebuf + sizeof ebuf; | |
9391 | switch (base) { | |
9392 | unsigned dig; | |
9393 | case 16: | |
9394 | if (!uv) | |
9395 | alt = FALSE; | |
9396 | p = (char*)((c == 'X') | |
9397 | ? "0123456789ABCDEF" : "0123456789abcdef"); | |
9398 | do { | |
9399 | dig = uv & 15; | |
9400 | *--ptr = p[dig]; | |
9401 | } while (uv >>= 4); | |
9402 | if (alt) { | |
9403 | esignbuf[esignlen++] = '0'; | |
9404 | esignbuf[esignlen++] = c; /* 'x' or 'X' */ | |
9405 | } | |
9406 | break; | |
9407 | case 8: | |
9408 | do { | |
9409 | dig = uv & 7; | |
9410 | *--ptr = '0' + dig; | |
9411 | } while (uv >>= 3); | |
9412 | if (alt && *ptr != '0') | |
9413 | *--ptr = '0'; | |
9414 | break; | |
9415 | case 2: | |
9416 | do { | |
9417 | dig = uv & 1; | |
9418 | *--ptr = '0' + dig; | |
9419 | } while (uv >>= 1); | |
9420 | if (alt) { | |
9421 | esignbuf[esignlen++] = '0'; | |
9422 | esignbuf[esignlen++] = 'b'; | |
9423 | } | |
9424 | break; | |
9425 | default: /* it had better be ten or less */ | |
9426 | do { | |
9427 | dig = uv % base; | |
9428 | *--ptr = '0' + dig; | |
9429 | } while (uv /= base); | |
9430 | break; | |
46fc3d4c | 9431 | } |
4d84ee25 NC |
9432 | elen = (ebuf + sizeof ebuf) - ptr; |
9433 | eptr = ptr; | |
9434 | if (has_precis) { | |
9435 | if (precis > elen) | |
9436 | zeros = precis - elen; | |
9437 | else if (precis == 0 && elen == 1 && *eptr == '0') | |
9438 | elen = 0; | |
eda88b6d | 9439 | } |
c10ed8b9 | 9440 | } |
46fc3d4c | 9441 | break; |
9442 | ||
9443 | /* FLOATING POINT */ | |
9444 | ||
fc36a67e | 9445 | case 'F': |
9446 | c = 'f'; /* maybe %F isn't supported here */ | |
9447 | /* FALL THROUGH */ | |
46fc3d4c | 9448 | case 'e': case 'E': |
fc36a67e | 9449 | case 'f': |
46fc3d4c | 9450 | case 'g': case 'G': |
9451 | ||
9452 | /* This is evil, but floating point is even more evil */ | |
9453 | ||
9e5b023a JH |
9454 | /* for SV-style calling, we can only get NV |
9455 | for C-style calling, we assume %f is double; | |
9456 | for simplicity we allow any of %Lf, %llf, %qf for long double | |
9457 | */ | |
9458 | switch (intsize) { | |
9459 | case 'V': | |
9460 | #if defined(USE_LONG_DOUBLE) | |
9461 | intsize = 'q'; | |
9462 | #endif | |
9463 | break; | |
8a2e3f14 | 9464 | /* [perl #20339] - we should accept and ignore %lf rather than die */ |
00e17364 HS |
9465 | case 'l': |
9466 | /* FALL THROUGH */ | |
9e5b023a JH |
9467 | default: |
9468 | #if defined(USE_LONG_DOUBLE) | |
9469 | intsize = args ? 0 : 'q'; | |
9470 | #endif | |
9471 | break; | |
9472 | case 'q': | |
9473 | #if defined(HAS_LONG_DOUBLE) | |
9474 | break; | |
9475 | #else | |
9476 | /* FALL THROUGH */ | |
9477 | #endif | |
9478 | case 'h': | |
9e5b023a JH |
9479 | goto unknown; |
9480 | } | |
9481 | ||
9482 | /* now we need (long double) if intsize == 'q', else (double) */ | |
be75b157 | 9483 | nv = (args && !vectorize) ? |
35fff930 JH |
9484 | #if LONG_DOUBLESIZE > DOUBLESIZE |
9485 | intsize == 'q' ? | |
205f51d8 AS |
9486 | va_arg(*args, long double) : |
9487 | va_arg(*args, double) | |
35fff930 | 9488 | #else |
205f51d8 | 9489 | va_arg(*args, double) |
35fff930 | 9490 | #endif |
9e5b023a | 9491 | : SvNVx(argsv); |
fc36a67e | 9492 | |
9493 | need = 0; | |
be75b157 | 9494 | vectorize = FALSE; |
fc36a67e | 9495 | if (c != 'e' && c != 'E') { |
9496 | i = PERL_INT_MIN; | |
9e5b023a JH |
9497 | /* FIXME: if HAS_LONG_DOUBLE but not USE_LONG_DOUBLE this |
9498 | will cast our (long double) to (double) */ | |
73b309ea | 9499 | (void)Perl_frexp(nv, &i); |
fc36a67e | 9500 | if (i == PERL_INT_MIN) |
cea2e8a9 | 9501 | Perl_die(aTHX_ "panic: frexp"); |
c635e13b | 9502 | if (i > 0) |
fc36a67e | 9503 | need = BIT_DIGITS(i); |
9504 | } | |
9505 | need += has_precis ? precis : 6; /* known default */ | |
20f6aaab | 9506 | |
fc36a67e | 9507 | if (need < width) |
9508 | need = width; | |
9509 | ||
20f6aaab AS |
9510 | #ifdef HAS_LDBL_SPRINTF_BUG |
9511 | /* This is to try to fix a bug with irix/nonstop-ux/powerux and | |
205f51d8 AS |
9512 | with sfio - Allen <allens@cpan.org> */ |
9513 | ||
9514 | # ifdef DBL_MAX | |
9515 | # define MY_DBL_MAX DBL_MAX | |
9516 | # else /* XXX guessing! HUGE_VAL may be defined as infinity, so not using */ | |
9517 | # if DOUBLESIZE >= 8 | |
9518 | # define MY_DBL_MAX 1.7976931348623157E+308L | |
9519 | # else | |
9520 | # define MY_DBL_MAX 3.40282347E+38L | |
9521 | # endif | |
9522 | # endif | |
9523 | ||
9524 | # ifdef HAS_LDBL_SPRINTF_BUG_LESS1 /* only between -1L & 1L - Allen */ | |
9525 | # define MY_DBL_MAX_BUG 1L | |
20f6aaab | 9526 | # else |
205f51d8 | 9527 | # define MY_DBL_MAX_BUG MY_DBL_MAX |
20f6aaab | 9528 | # endif |
20f6aaab | 9529 | |
205f51d8 AS |
9530 | # ifdef DBL_MIN |
9531 | # define MY_DBL_MIN DBL_MIN | |
9532 | # else /* XXX guessing! -Allen */ | |
9533 | # if DOUBLESIZE >= 8 | |
9534 | # define MY_DBL_MIN 2.2250738585072014E-308L | |
9535 | # else | |
9536 | # define MY_DBL_MIN 1.17549435E-38L | |
9537 | # endif | |
9538 | # endif | |
20f6aaab | 9539 | |
205f51d8 AS |
9540 | if ((intsize == 'q') && (c == 'f') && |
9541 | ((nv < MY_DBL_MAX_BUG) && (nv > -MY_DBL_MAX_BUG)) && | |
9542 | (need < DBL_DIG)) { | |
9543 | /* it's going to be short enough that | |
9544 | * long double precision is not needed */ | |
9545 | ||
9546 | if ((nv <= 0L) && (nv >= -0L)) | |
9547 | fix_ldbl_sprintf_bug = TRUE; /* 0 is 0 - easiest */ | |
9548 | else { | |
9549 | /* would use Perl_fp_class as a double-check but not | |
9550 | * functional on IRIX - see perl.h comments */ | |
9551 | ||
9552 | if ((nv >= MY_DBL_MIN) || (nv <= -MY_DBL_MIN)) { | |
9553 | /* It's within the range that a double can represent */ | |
9554 | #if defined(DBL_MAX) && !defined(DBL_MIN) | |
9555 | if ((nv >= ((long double)1/DBL_MAX)) || | |
9556 | (nv <= (-(long double)1/DBL_MAX))) | |
20f6aaab | 9557 | #endif |
205f51d8 | 9558 | fix_ldbl_sprintf_bug = TRUE; |
20f6aaab | 9559 | } |
205f51d8 AS |
9560 | } |
9561 | if (fix_ldbl_sprintf_bug == TRUE) { | |
9562 | double temp; | |
9563 | ||
9564 | intsize = 0; | |
9565 | temp = (double)nv; | |
9566 | nv = (NV)temp; | |
9567 | } | |
20f6aaab | 9568 | } |
205f51d8 AS |
9569 | |
9570 | # undef MY_DBL_MAX | |
9571 | # undef MY_DBL_MAX_BUG | |
9572 | # undef MY_DBL_MIN | |
9573 | ||
20f6aaab AS |
9574 | #endif /* HAS_LDBL_SPRINTF_BUG */ |
9575 | ||
46fc3d4c | 9576 | need += 20; /* fudge factor */ |
80252599 GS |
9577 | if (PL_efloatsize < need) { |
9578 | Safefree(PL_efloatbuf); | |
9579 | PL_efloatsize = need + 20; /* more fudge */ | |
9580 | New(906, PL_efloatbuf, PL_efloatsize, char); | |
7d5ea4e7 | 9581 | PL_efloatbuf[0] = '\0'; |
46fc3d4c | 9582 | } |
9583 | ||
4151a5fe IZ |
9584 | if ( !(width || left || plus || alt) && fill != '0' |
9585 | && has_precis && intsize != 'q' ) { /* Shortcuts */ | |
2873255c NC |
9586 | /* See earlier comment about buggy Gconvert when digits, |
9587 | aka precis is 0 */ | |
9588 | if ( c == 'g' && precis) { | |
2e59c212 | 9589 | Gconvert((NV)nv, (int)precis, 0, PL_efloatbuf); |
4151a5fe IZ |
9590 | if (*PL_efloatbuf) /* May return an empty string for digits==0 */ |
9591 | goto float_converted; | |
9592 | } else if ( c == 'f' && !precis) { | |
9593 | if ((eptr = F0convert(nv, ebuf + sizeof ebuf, &elen))) | |
9594 | break; | |
9595 | } | |
9596 | } | |
4d84ee25 NC |
9597 | { |
9598 | char *ptr = ebuf + sizeof ebuf; | |
9599 | *--ptr = '\0'; | |
9600 | *--ptr = c; | |
9601 | /* FIXME: what to do if HAS_LONG_DOUBLE but not PERL_PRIfldbl? */ | |
9e5b023a | 9602 | #if defined(HAS_LONG_DOUBLE) && defined(PERL_PRIfldbl) |
4d84ee25 NC |
9603 | if (intsize == 'q') { |
9604 | /* Copy the one or more characters in a long double | |
9605 | * format before the 'base' ([efgEFG]) character to | |
9606 | * the format string. */ | |
9607 | static char const prifldbl[] = PERL_PRIfldbl; | |
9608 | char const *p = prifldbl + sizeof(prifldbl) - 3; | |
9609 | while (p >= prifldbl) { *--ptr = *p--; } | |
9610 | } | |
65202027 | 9611 | #endif |
4d84ee25 NC |
9612 | if (has_precis) { |
9613 | base = precis; | |
9614 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
9615 | *--ptr = '.'; | |
9616 | } | |
9617 | if (width) { | |
9618 | base = width; | |
9619 | do { *--ptr = '0' + (base % 10); } while (base /= 10); | |
9620 | } | |
9621 | if (fill == '0') | |
9622 | *--ptr = fill; | |
9623 | if (left) | |
9624 | *--ptr = '-'; | |
9625 | if (plus) | |
9626 | *--ptr = plus; | |
9627 | if (alt) | |
9628 | *--ptr = '#'; | |
9629 | *--ptr = '%'; | |
9630 | ||
9631 | /* No taint. Otherwise we are in the strange situation | |
9632 | * where printf() taints but print($float) doesn't. | |
9633 | * --jhi */ | |
9e5b023a | 9634 | #if defined(HAS_LONG_DOUBLE) |
4d84ee25 NC |
9635 | if (intsize == 'q') |
9636 | (void)sprintf(PL_efloatbuf, ptr, nv); | |
9637 | else | |
9638 | (void)sprintf(PL_efloatbuf, ptr, (double)nv); | |
9e5b023a | 9639 | #else |
4d84ee25 | 9640 | (void)sprintf(PL_efloatbuf, ptr, nv); |
9e5b023a | 9641 | #endif |
4d84ee25 | 9642 | } |
4151a5fe | 9643 | float_converted: |
80252599 GS |
9644 | eptr = PL_efloatbuf; |
9645 | elen = strlen(PL_efloatbuf); | |
46fc3d4c | 9646 | break; |
9647 | ||
fc36a67e | 9648 | /* SPECIAL */ |
9649 | ||
9650 | case 'n': | |
9651 | i = SvCUR(sv) - origlen; | |
be75b157 | 9652 | if (args && !vectorize) { |
c635e13b | 9653 | switch (intsize) { |
9654 | case 'h': *(va_arg(*args, short*)) = i; break; | |
9655 | default: *(va_arg(*args, int*)) = i; break; | |
9656 | case 'l': *(va_arg(*args, long*)) = i; break; | |
9657 | case 'V': *(va_arg(*args, IV*)) = i; break; | |
cf2093f6 JH |
9658 | #ifdef HAS_QUAD |
9659 | case 'q': *(va_arg(*args, Quad_t*)) = i; break; | |
9660 | #endif | |
c635e13b | 9661 | } |
fc36a67e | 9662 | } |
9dd79c3f | 9663 | else |
211dfcf1 | 9664 | sv_setuv_mg(argsv, (UV)i); |
be75b157 | 9665 | vectorize = FALSE; |
fc36a67e | 9666 | continue; /* not "break" */ |
9667 | ||
9668 | /* UNKNOWN */ | |
9669 | ||
46fc3d4c | 9670 | default: |
fc36a67e | 9671 | unknown: |
599cee73 | 9672 | if (!args && ckWARN(WARN_PRINTF) && |
533c011a | 9673 | (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) { |
c635e13b | 9674 | SV *msg = sv_newmortal(); |
35c1215d NC |
9675 | Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %sprintf: ", |
9676 | (PL_op->op_type == OP_PRTF) ? "" : "s"); | |
0f4b6630 | 9677 | if (c) { |
0f4b6630 | 9678 | if (isPRINT(c)) |
1c846c1f | 9679 | Perl_sv_catpvf(aTHX_ msg, |
0f4b6630 JH |
9680 | "\"%%%c\"", c & 0xFF); |
9681 | else | |
9682 | Perl_sv_catpvf(aTHX_ msg, | |
57def98f | 9683 | "\"%%\\%03"UVof"\"", |
0f4b6630 | 9684 | (UV)c & 0xFF); |
0f4b6630 | 9685 | } else |
c635e13b | 9686 | sv_catpv(msg, "end of string"); |
9014280d | 9687 | Perl_warner(aTHX_ packWARN(WARN_PRINTF), "%"SVf, msg); /* yes, this is reentrant */ |
c635e13b | 9688 | } |
fb73857a | 9689 | |
9690 | /* output mangled stuff ... */ | |
9691 | if (c == '\0') | |
9692 | --q; | |
46fc3d4c | 9693 | eptr = p; |
9694 | elen = q - p; | |
fb73857a | 9695 | |
9696 | /* ... right here, because formatting flags should not apply */ | |
9697 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9698 | p = SvEND(sv); | |
4459522c | 9699 | Copy(eptr, p, elen, char); |
fb73857a | 9700 | p += elen; |
9701 | *p = '\0'; | |
3f7c398e | 9702 | SvCUR_set(sv, p - SvPVX_const(sv)); |
58e33a90 | 9703 | svix = osvix; |
fb73857a | 9704 | continue; /* not "break" */ |
46fc3d4c | 9705 | } |
9706 | ||
6c94ec8b HS |
9707 | /* calculate width before utf8_upgrade changes it */ |
9708 | have = esignlen + zeros + elen; | |
9709 | ||
d2876be5 JH |
9710 | if (is_utf8 != has_utf8) { |
9711 | if (is_utf8) { | |
9712 | if (SvCUR(sv)) | |
9713 | sv_utf8_upgrade(sv); | |
9714 | } | |
9715 | else { | |
53c1dcc0 | 9716 | SV * const nsv = sv_2mortal(newSVpvn(eptr, elen)); |
d2876be5 | 9717 | sv_utf8_upgrade(nsv); |
93524f2b | 9718 | eptr = SvPVX_const(nsv); |
d2876be5 JH |
9719 | elen = SvCUR(nsv); |
9720 | } | |
9721 | SvGROW(sv, SvCUR(sv) + elen + 1); | |
9722 | p = SvEND(sv); | |
9723 | *p = '\0'; | |
9724 | } | |
6af65485 | 9725 | |
46fc3d4c | 9726 | need = (have > width ? have : width); |
9727 | gap = need - have; | |
9728 | ||
b22c7a20 | 9729 | SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1); |
46fc3d4c | 9730 | p = SvEND(sv); |
9731 | if (esignlen && fill == '0') { | |
53c1dcc0 | 9732 | int i; |
eb160463 | 9733 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9734 | *p++ = esignbuf[i]; |
9735 | } | |
9736 | if (gap && !left) { | |
9737 | memset(p, fill, gap); | |
9738 | p += gap; | |
9739 | } | |
9740 | if (esignlen && fill != '0') { | |
53c1dcc0 | 9741 | int i; |
eb160463 | 9742 | for (i = 0; i < (int)esignlen; i++) |
46fc3d4c | 9743 | *p++ = esignbuf[i]; |
9744 | } | |
fc36a67e | 9745 | if (zeros) { |
53c1dcc0 | 9746 | int i; |
fc36a67e | 9747 | for (i = zeros; i; i--) |
9748 | *p++ = '0'; | |
9749 | } | |
46fc3d4c | 9750 | if (elen) { |
4459522c | 9751 | Copy(eptr, p, elen, char); |
46fc3d4c | 9752 | p += elen; |
9753 | } | |
9754 | if (gap && left) { | |
9755 | memset(p, ' ', gap); | |
9756 | p += gap; | |
9757 | } | |
b22c7a20 GS |
9758 | if (vectorize) { |
9759 | if (veclen) { | |
4459522c | 9760 | Copy(dotstr, p, dotstrlen, char); |
b22c7a20 GS |
9761 | p += dotstrlen; |
9762 | } | |
9763 | else | |
9764 | vectorize = FALSE; /* done iterating over vecstr */ | |
9765 | } | |
2cf2cfc6 A |
9766 | if (is_utf8) |
9767 | has_utf8 = TRUE; | |
9768 | if (has_utf8) | |
7e2040f0 | 9769 | SvUTF8_on(sv); |
46fc3d4c | 9770 | *p = '\0'; |
3f7c398e | 9771 | SvCUR_set(sv, p - SvPVX_const(sv)); |
b22c7a20 GS |
9772 | if (vectorize) { |
9773 | esignlen = 0; | |
9774 | goto vector; | |
9775 | } | |
46fc3d4c | 9776 | } |
9777 | } | |
51371543 | 9778 | |
645c22ef DM |
9779 | /* ========================================================================= |
9780 | ||
9781 | =head1 Cloning an interpreter | |
9782 | ||
9783 | All the macros and functions in this section are for the private use of | |
9784 | the main function, perl_clone(). | |
9785 | ||
9786 | The foo_dup() functions make an exact copy of an existing foo thinngy. | |
9787 | During the course of a cloning, a hash table is used to map old addresses | |
9788 | to new addresses. The table is created and manipulated with the | |
9789 | ptr_table_* functions. | |
9790 | ||
9791 | =cut | |
9792 | ||
9793 | ============================================================================*/ | |
9794 | ||
9795 | ||
1d7c1841 GS |
9796 | #if defined(USE_ITHREADS) |
9797 | ||
1d7c1841 GS |
9798 | #ifndef GpREFCNT_inc |
9799 | # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL) | |
9800 | #endif | |
9801 | ||
9802 | ||
d2d73c3e AB |
9803 | #define sv_dup_inc(s,t) SvREFCNT_inc(sv_dup(s,t)) |
9804 | #define av_dup(s,t) (AV*)sv_dup((SV*)s,t) | |
9805 | #define av_dup_inc(s,t) (AV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9806 | #define hv_dup(s,t) (HV*)sv_dup((SV*)s,t) | |
9807 | #define hv_dup_inc(s,t) (HV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9808 | #define cv_dup(s,t) (CV*)sv_dup((SV*)s,t) | |
9809 | #define cv_dup_inc(s,t) (CV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9810 | #define io_dup(s,t) (IO*)sv_dup((SV*)s,t) | |
9811 | #define io_dup_inc(s,t) (IO*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
9812 | #define gv_dup(s,t) (GV*)sv_dup((SV*)s,t) | |
9813 | #define gv_dup_inc(s,t) (GV*)SvREFCNT_inc(sv_dup((SV*)s,t)) | |
1d7c1841 GS |
9814 | #define SAVEPV(p) (p ? savepv(p) : Nullch) |
9815 | #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch) | |
8cf8f3d1 | 9816 | |
d2d73c3e | 9817 | |
d2f185dc AMS |
9818 | /* Duplicate a regexp. Required reading: pregcomp() and pregfree() in |
9819 | regcomp.c. AMS 20010712 */ | |
645c22ef | 9820 | |
1d7c1841 | 9821 | REGEXP * |
53c1dcc0 | 9822 | Perl_re_dup(pTHX_ const REGEXP *r, CLONE_PARAMS *param) |
1d7c1841 | 9823 | { |
27da23d5 | 9824 | dVAR; |
d2f185dc AMS |
9825 | REGEXP *ret; |
9826 | int i, len, npar; | |
9827 | struct reg_substr_datum *s; | |
9828 | ||
9829 | if (!r) | |
9830 | return (REGEXP *)NULL; | |
9831 | ||
9832 | if ((ret = (REGEXP *)ptr_table_fetch(PL_ptr_table, r))) | |
9833 | return ret; | |
9834 | ||
9835 | len = r->offsets[0]; | |
9836 | npar = r->nparens+1; | |
9837 | ||
9838 | Newc(0, ret, sizeof(regexp) + (len+1)*sizeof(regnode), char, regexp); | |
9839 | Copy(r->program, ret->program, len+1, regnode); | |
9840 | ||
9841 | New(0, ret->startp, npar, I32); | |
9842 | Copy(r->startp, ret->startp, npar, I32); | |
9843 | New(0, ret->endp, npar, I32); | |
9844 | Copy(r->startp, ret->startp, npar, I32); | |
9845 | ||
d2f185dc AMS |
9846 | New(0, ret->substrs, 1, struct reg_substr_data); |
9847 | for (s = ret->substrs->data, i = 0; i < 3; i++, s++) { | |
9848 | s->min_offset = r->substrs->data[i].min_offset; | |
9849 | s->max_offset = r->substrs->data[i].max_offset; | |
9850 | s->substr = sv_dup_inc(r->substrs->data[i].substr, param); | |
33b8afdf | 9851 | s->utf8_substr = sv_dup_inc(r->substrs->data[i].utf8_substr, param); |
d2f185dc AMS |
9852 | } |
9853 | ||
70612e96 | 9854 | ret->regstclass = NULL; |
d2f185dc AMS |
9855 | if (r->data) { |
9856 | struct reg_data *d; | |
e1ec3a88 | 9857 | const int count = r->data->count; |
53c1dcc0 | 9858 | int i; |
d2f185dc AMS |
9859 | |
9860 | Newc(0, d, sizeof(struct reg_data) + count*sizeof(void *), | |
9861 | char, struct reg_data); | |
9862 | New(0, d->what, count, U8); | |
9863 | ||
9864 | d->count = count; | |
9865 | for (i = 0; i < count; i++) { | |
9866 | d->what[i] = r->data->what[i]; | |
9867 | switch (d->what[i]) { | |
a3621e74 YO |
9868 | /* legal options are one of: sfpont |
9869 | see also regcomp.h and pregfree() */ | |
d2f185dc AMS |
9870 | case 's': |
9871 | d->data[i] = sv_dup_inc((SV *)r->data->data[i], param); | |
9872 | break; | |
9873 | case 'p': | |
9874 | d->data[i] = av_dup_inc((AV *)r->data->data[i], param); | |
9875 | break; | |
9876 | case 'f': | |
9877 | /* This is cheating. */ | |
9878 | New(0, d->data[i], 1, struct regnode_charclass_class); | |
9879 | StructCopy(r->data->data[i], d->data[i], | |
9880 | struct regnode_charclass_class); | |
70612e96 | 9881 | ret->regstclass = (regnode*)d->data[i]; |
d2f185dc AMS |
9882 | break; |
9883 | case 'o': | |
33773810 AMS |
9884 | /* Compiled op trees are readonly, and can thus be |
9885 | shared without duplication. */ | |
b34c0dd4 | 9886 | OP_REFCNT_LOCK; |
9b978d73 | 9887 | d->data[i] = (void*)OpREFCNT_inc((OP*)r->data->data[i]); |
b34c0dd4 | 9888 | OP_REFCNT_UNLOCK; |
9b978d73 | 9889 | break; |
d2f185dc AMS |
9890 | case 'n': |
9891 | d->data[i] = r->data->data[i]; | |
9892 | break; | |
a3621e74 YO |
9893 | case 't': |
9894 | d->data[i] = r->data->data[i]; | |
9895 | OP_REFCNT_LOCK; | |
9896 | ((reg_trie_data*)d->data[i])->refcount++; | |
9897 | OP_REFCNT_UNLOCK; | |
9898 | break; | |
9899 | default: | |
9900 | Perl_croak(aTHX_ "panic: re_dup unknown data code '%c'", r->data->what[i]); | |
d2f185dc AMS |
9901 | } |
9902 | } | |
9903 | ||
9904 | ret->data = d; | |
9905 | } | |
9906 | else | |
9907 | ret->data = NULL; | |
9908 | ||
9909 | New(0, ret->offsets, 2*len+1, U32); | |
9910 | Copy(r->offsets, ret->offsets, 2*len+1, U32); | |
9911 | ||
e01c5899 | 9912 | ret->precomp = SAVEPVN(r->precomp, r->prelen); |
d2f185dc AMS |
9913 | ret->refcnt = r->refcnt; |
9914 | ret->minlen = r->minlen; | |
9915 | ret->prelen = r->prelen; | |
9916 | ret->nparens = r->nparens; | |
9917 | ret->lastparen = r->lastparen; | |
9918 | ret->lastcloseparen = r->lastcloseparen; | |
9919 | ret->reganch = r->reganch; | |
9920 | ||
70612e96 RG |
9921 | ret->sublen = r->sublen; |
9922 | ||
9923 | if (RX_MATCH_COPIED(ret)) | |
e01c5899 | 9924 | ret->subbeg = SAVEPVN(r->subbeg, r->sublen); |
70612e96 RG |
9925 | else |
9926 | ret->subbeg = Nullch; | |
f8c7b90f | 9927 | #ifdef PERL_OLD_COPY_ON_WRITE |
9a26048b NC |
9928 | ret->saved_copy = Nullsv; |
9929 | #endif | |
70612e96 | 9930 | |
d2f185dc AMS |
9931 | ptr_table_store(PL_ptr_table, r, ret); |
9932 | return ret; | |
1d7c1841 GS |
9933 | } |
9934 | ||
d2d73c3e | 9935 | /* duplicate a file handle */ |
645c22ef | 9936 | |
1d7c1841 | 9937 | PerlIO * |
a8fc9800 | 9938 | Perl_fp_dup(pTHX_ PerlIO *fp, char type, CLONE_PARAMS *param) |
1d7c1841 GS |
9939 | { |
9940 | PerlIO *ret; | |
53c1dcc0 AL |
9941 | |
9942 | PERL_UNUSED_ARG(type); | |
73d840c0 | 9943 | |
1d7c1841 GS |
9944 | if (!fp) |
9945 | return (PerlIO*)NULL; | |
9946 | ||
9947 | /* look for it in the table first */ | |
9948 | ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp); | |
9949 | if (ret) | |
9950 | return ret; | |
9951 | ||
9952 | /* create anew and remember what it is */ | |
ecdeb87c | 9953 | ret = PerlIO_fdupopen(aTHX_ fp, param, PERLIO_DUP_CLONE); |
1d7c1841 GS |
9954 | ptr_table_store(PL_ptr_table, fp, ret); |
9955 | return ret; | |
9956 | } | |
9957 | ||
645c22ef DM |
9958 | /* duplicate a directory handle */ |
9959 | ||
1d7c1841 GS |
9960 | DIR * |
9961 | Perl_dirp_dup(pTHX_ DIR *dp) | |
9962 | { | |
9963 | if (!dp) | |
9964 | return (DIR*)NULL; | |
9965 | /* XXX TODO */ | |
9966 | return dp; | |
9967 | } | |
9968 | ||
ff276b08 | 9969 | /* duplicate a typeglob */ |
645c22ef | 9970 | |
1d7c1841 | 9971 | GP * |
a8fc9800 | 9972 | Perl_gp_dup(pTHX_ GP *gp, CLONE_PARAMS* param) |
1d7c1841 GS |
9973 | { |
9974 | GP *ret; | |
9975 | if (!gp) | |
9976 | return (GP*)NULL; | |
9977 | /* look for it in the table first */ | |
9978 | ret = (GP*)ptr_table_fetch(PL_ptr_table, gp); | |
9979 | if (ret) | |
9980 | return ret; | |
9981 | ||
9982 | /* create anew and remember what it is */ | |
9983 | Newz(0, ret, 1, GP); | |
9984 | ptr_table_store(PL_ptr_table, gp, ret); | |
9985 | ||
9986 | /* clone */ | |
9987 | ret->gp_refcnt = 0; /* must be before any other dups! */ | |
d2d73c3e AB |
9988 | ret->gp_sv = sv_dup_inc(gp->gp_sv, param); |
9989 | ret->gp_io = io_dup_inc(gp->gp_io, param); | |
9990 | ret->gp_form = cv_dup_inc(gp->gp_form, param); | |
9991 | ret->gp_av = av_dup_inc(gp->gp_av, param); | |
9992 | ret->gp_hv = hv_dup_inc(gp->gp_hv, param); | |
9993 | ret->gp_egv = gv_dup(gp->gp_egv, param);/* GvEGV is not refcounted */ | |
9994 | ret->gp_cv = cv_dup_inc(gp->gp_cv, param); | |
1d7c1841 GS |
9995 | ret->gp_cvgen = gp->gp_cvgen; |
9996 | ret->gp_flags = gp->gp_flags; | |
9997 | ret->gp_line = gp->gp_line; | |
9998 | ret->gp_file = gp->gp_file; /* points to COP.cop_file */ | |
9999 | return ret; | |
10000 | } | |
10001 | ||
645c22ef DM |
10002 | /* duplicate a chain of magic */ |
10003 | ||
1d7c1841 | 10004 | MAGIC * |
a8fc9800 | 10005 | Perl_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS* param) |
1d7c1841 | 10006 | { |
cb359b41 JH |
10007 | MAGIC *mgprev = (MAGIC*)NULL; |
10008 | MAGIC *mgret; | |
1d7c1841 GS |
10009 | if (!mg) |
10010 | return (MAGIC*)NULL; | |
10011 | /* look for it in the table first */ | |
10012 | mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg); | |
10013 | if (mgret) | |
10014 | return mgret; | |
10015 | ||
10016 | for (; mg; mg = mg->mg_moremagic) { | |
10017 | MAGIC *nmg; | |
10018 | Newz(0, nmg, 1, MAGIC); | |
cb359b41 | 10019 | if (mgprev) |
1d7c1841 | 10020 | mgprev->mg_moremagic = nmg; |
cb359b41 JH |
10021 | else |
10022 | mgret = nmg; | |
1d7c1841 GS |
10023 | nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */ |
10024 | nmg->mg_private = mg->mg_private; | |
10025 | nmg->mg_type = mg->mg_type; | |
10026 | nmg->mg_flags = mg->mg_flags; | |
14befaf4 | 10027 | if (mg->mg_type == PERL_MAGIC_qr) { |
d2f185dc | 10028 | nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj, param); |
1d7c1841 | 10029 | } |
05bd4103 | 10030 | else if(mg->mg_type == PERL_MAGIC_backref) { |
7fc63493 | 10031 | const AV * const av = (AV*) mg->mg_obj; |
fdc9a813 AE |
10032 | SV **svp; |
10033 | I32 i; | |
7fc63493 | 10034 | (void)SvREFCNT_inc(nmg->mg_obj = (SV*)newAV()); |
fdc9a813 AE |
10035 | svp = AvARRAY(av); |
10036 | for (i = AvFILLp(av); i >= 0; i--) { | |
3a81978b | 10037 | if (!svp[i]) continue; |
fdc9a813 AE |
10038 | av_push((AV*)nmg->mg_obj,sv_dup(svp[i],param)); |
10039 | } | |
05bd4103 | 10040 | } |
8d2f4536 NC |
10041 | else if (mg->mg_type == PERL_MAGIC_symtab) { |
10042 | nmg->mg_obj = mg->mg_obj; | |
10043 | } | |
1d7c1841 GS |
10044 | else { |
10045 | nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED) | |
d2d73c3e AB |
10046 | ? sv_dup_inc(mg->mg_obj, param) |
10047 | : sv_dup(mg->mg_obj, param); | |
1d7c1841 GS |
10048 | } |
10049 | nmg->mg_len = mg->mg_len; | |
10050 | nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */ | |
14befaf4 | 10051 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
68795e93 | 10052 | if (mg->mg_len > 0) { |
1d7c1841 | 10053 | nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len); |
14befaf4 DM |
10054 | if (mg->mg_type == PERL_MAGIC_overload_table && |
10055 | AMT_AMAGIC((AMT*)mg->mg_ptr)) | |
10056 | { | |
1d7c1841 GS |
10057 | AMT *amtp = (AMT*)mg->mg_ptr; |
10058 | AMT *namtp = (AMT*)nmg->mg_ptr; | |
10059 | I32 i; | |
10060 | for (i = 1; i < NofAMmeth; i++) { | |
d2d73c3e | 10061 | namtp->table[i] = cv_dup_inc(amtp->table[i], param); |
1d7c1841 GS |
10062 | } |
10063 | } | |
10064 | } | |
10065 | else if (mg->mg_len == HEf_SVKEY) | |
d2d73c3e | 10066 | nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr, param); |
1d7c1841 | 10067 | } |
68795e93 NIS |
10068 | if ((mg->mg_flags & MGf_DUP) && mg->mg_virtual && mg->mg_virtual->svt_dup) { |
10069 | CALL_FPTR(nmg->mg_virtual->svt_dup)(aTHX_ nmg, param); | |
10070 | } | |
1d7c1841 GS |
10071 | mgprev = nmg; |
10072 | } | |
10073 | return mgret; | |
10074 | } | |
10075 | ||
645c22ef DM |
10076 | /* create a new pointer-mapping table */ |
10077 | ||
1d7c1841 GS |
10078 | PTR_TBL_t * |
10079 | Perl_ptr_table_new(pTHX) | |
10080 | { | |
10081 | PTR_TBL_t *tbl; | |
10082 | Newz(0, tbl, 1, PTR_TBL_t); | |
10083 | tbl->tbl_max = 511; | |
10084 | tbl->tbl_items = 0; | |
10085 | Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*); | |
10086 | return tbl; | |
10087 | } | |
10088 | ||
134ca3d6 DM |
10089 | #if (PTRSIZE == 8) |
10090 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 3) | |
10091 | #else | |
10092 | # define PTR_TABLE_HASH(ptr) (PTR2UV(ptr) >> 2) | |
10093 | #endif | |
10094 | ||
437a6bf1 | 10095 | #define new_pte() new_body(struct ptr_tbl_ent, pte) |
cb4415b8 | 10096 | #define del_pte(p) del_body_type(p, struct ptr_tbl_ent, pte) |
32e691d0 | 10097 | |
645c22ef DM |
10098 | /* map an existing pointer using a table */ |
10099 | ||
1d7c1841 | 10100 | void * |
53c1dcc0 | 10101 | Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, const void *sv) |
1d7c1841 GS |
10102 | { |
10103 | PTR_TBL_ENT_t *tblent; | |
4373e329 | 10104 | const UV hash = PTR_TABLE_HASH(sv); |
1d7c1841 GS |
10105 | assert(tbl); |
10106 | tblent = tbl->tbl_ary[hash & tbl->tbl_max]; | |
10107 | for (; tblent; tblent = tblent->next) { | |
10108 | if (tblent->oldval == sv) | |
10109 | return tblent->newval; | |
10110 | } | |
10111 | return (void*)NULL; | |
10112 | } | |
10113 | ||
645c22ef DM |
10114 | /* add a new entry to a pointer-mapping table */ |
10115 | ||
1d7c1841 | 10116 | void |
53c1dcc0 | 10117 | Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, const void *oldv, void *newv) |
1d7c1841 GS |
10118 | { |
10119 | PTR_TBL_ENT_t *tblent, **otblent; | |
10120 | /* XXX this may be pessimal on platforms where pointers aren't good | |
10121 | * hash values e.g. if they grow faster in the most significant | |
10122 | * bits */ | |
4373e329 | 10123 | const UV hash = PTR_TABLE_HASH(oldv); |
14cade97 | 10124 | bool empty = 1; |
1d7c1841 GS |
10125 | |
10126 | assert(tbl); | |
10127 | otblent = &tbl->tbl_ary[hash & tbl->tbl_max]; | |
14cade97 | 10128 | for (tblent = *otblent; tblent; empty=0, tblent = tblent->next) { |
1d7c1841 GS |
10129 | if (tblent->oldval == oldv) { |
10130 | tblent->newval = newv; | |
1d7c1841 GS |
10131 | return; |
10132 | } | |
10133 | } | |
437a6bf1 | 10134 | tblent = new_pte(); |
1d7c1841 GS |
10135 | tblent->oldval = oldv; |
10136 | tblent->newval = newv; | |
10137 | tblent->next = *otblent; | |
10138 | *otblent = tblent; | |
10139 | tbl->tbl_items++; | |
14cade97 | 10140 | if (!empty && tbl->tbl_items > tbl->tbl_max) |
1d7c1841 GS |
10141 | ptr_table_split(tbl); |
10142 | } | |
10143 | ||
645c22ef DM |
10144 | /* double the hash bucket size of an existing ptr table */ |
10145 | ||
1d7c1841 GS |
10146 | void |
10147 | Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl) | |
10148 | { | |
10149 | PTR_TBL_ENT_t **ary = tbl->tbl_ary; | |
4373e329 | 10150 | const UV oldsize = tbl->tbl_max + 1; |
1d7c1841 GS |
10151 | UV newsize = oldsize * 2; |
10152 | UV i; | |
10153 | ||
10154 | Renew(ary, newsize, PTR_TBL_ENT_t*); | |
10155 | Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*); | |
10156 | tbl->tbl_max = --newsize; | |
10157 | tbl->tbl_ary = ary; | |
10158 | for (i=0; i < oldsize; i++, ary++) { | |
10159 | PTR_TBL_ENT_t **curentp, **entp, *ent; | |
10160 | if (!*ary) | |
10161 | continue; | |
10162 | curentp = ary + oldsize; | |
10163 | for (entp = ary, ent = *ary; ent; ent = *entp) { | |
134ca3d6 | 10164 | if ((newsize & PTR_TABLE_HASH(ent->oldval)) != i) { |
1d7c1841 GS |
10165 | *entp = ent->next; |
10166 | ent->next = *curentp; | |
10167 | *curentp = ent; | |
10168 | continue; | |
10169 | } | |
10170 | else | |
10171 | entp = &ent->next; | |
10172 | } | |
10173 | } | |
10174 | } | |
10175 | ||
645c22ef DM |
10176 | /* remove all the entries from a ptr table */ |
10177 | ||
a0739874 DM |
10178 | void |
10179 | Perl_ptr_table_clear(pTHX_ PTR_TBL_t *tbl) | |
10180 | { | |
10181 | register PTR_TBL_ENT_t **array; | |
10182 | register PTR_TBL_ENT_t *entry; | |
a0739874 DM |
10183 | UV riter = 0; |
10184 | UV max; | |
10185 | ||
10186 | if (!tbl || !tbl->tbl_items) { | |
10187 | return; | |
10188 | } | |
10189 | ||
10190 | array = tbl->tbl_ary; | |
10191 | entry = array[0]; | |
10192 | max = tbl->tbl_max; | |
10193 | ||
10194 | for (;;) { | |
10195 | if (entry) { | |
4373e329 | 10196 | PTR_TBL_ENT_t *oentry = entry; |
a0739874 | 10197 | entry = entry->next; |
437a6bf1 | 10198 | del_pte(oentry); |
a0739874 DM |
10199 | } |
10200 | if (!entry) { | |
10201 | if (++riter > max) { | |
10202 | break; | |
10203 | } | |
10204 | entry = array[riter]; | |
10205 | } | |
10206 | } | |
10207 | ||
10208 | tbl->tbl_items = 0; | |
10209 | } | |
10210 | ||
645c22ef DM |
10211 | /* clear and free a ptr table */ |
10212 | ||
a0739874 DM |
10213 | void |
10214 | Perl_ptr_table_free(pTHX_ PTR_TBL_t *tbl) | |
10215 | { | |
10216 | if (!tbl) { | |
10217 | return; | |
10218 | } | |
10219 | ptr_table_clear(tbl); | |
10220 | Safefree(tbl->tbl_ary); | |
10221 | Safefree(tbl); | |
10222 | } | |
10223 | ||
645c22ef DM |
10224 | /* attempt to make everything in the typeglob readonly */ |
10225 | ||
5bd07a3d | 10226 | STATIC SV * |
59b40662 | 10227 | S_gv_share(pTHX_ SV *sstr, CLONE_PARAMS *param) |
5bd07a3d DM |
10228 | { |
10229 | GV *gv = (GV*)sstr; | |
59b40662 | 10230 | SV *sv = ¶m->proto_perl->Isv_no; /* just need SvREADONLY-ness */ |
5bd07a3d DM |
10231 | |
10232 | if (GvIO(gv) || GvFORM(gv)) { | |
7fb37951 | 10233 | GvUNIQUE_off(gv); /* GvIOs cannot be shared. nor can GvFORMs */ |
5bd07a3d DM |
10234 | } |
10235 | else if (!GvCV(gv)) { | |
10236 | GvCV(gv) = (CV*)sv; | |
10237 | } | |
10238 | else { | |
10239 | /* CvPADLISTs cannot be shared */ | |
37e20706 | 10240 | if (!SvREADONLY(GvCV(gv)) && !CvXSUB(GvCV(gv))) { |
7fb37951 | 10241 | GvUNIQUE_off(gv); |
5bd07a3d DM |
10242 | } |
10243 | } | |
10244 | ||
7fb37951 | 10245 | if (!GvUNIQUE(gv)) { |
5bd07a3d DM |
10246 | #if 0 |
10247 | PerlIO_printf(Perl_debug_log, "gv_share: unable to share %s::%s\n", | |
bfcb3514 | 10248 | HvNAME_get(GvSTASH(gv)), GvNAME(gv)); |
5bd07a3d DM |
10249 | #endif |
10250 | return Nullsv; | |
10251 | } | |
10252 | ||
4411f3b6 | 10253 | /* |
5bd07a3d DM |
10254 | * write attempts will die with |
10255 | * "Modification of a read-only value attempted" | |
10256 | */ | |
10257 | if (!GvSV(gv)) { | |
10258 | GvSV(gv) = sv; | |
10259 | } | |
10260 | else { | |
10261 | SvREADONLY_on(GvSV(gv)); | |
10262 | } | |
10263 | ||
10264 | if (!GvAV(gv)) { | |
10265 | GvAV(gv) = (AV*)sv; | |
10266 | } | |
10267 | else { | |
10268 | SvREADONLY_on(GvAV(gv)); | |
10269 | } | |
10270 | ||
10271 | if (!GvHV(gv)) { | |
10272 | GvHV(gv) = (HV*)sv; | |
10273 | } | |
10274 | else { | |
53c33732 | 10275 | SvREADONLY_on(GvHV(gv)); |
5bd07a3d DM |
10276 | } |
10277 | ||
10278 | return sstr; /* he_dup() will SvREFCNT_inc() */ | |
10279 | } | |
10280 | ||
83841fad NIS |
10281 | void |
10282 | Perl_rvpv_dup(pTHX_ SV *dstr, SV *sstr, CLONE_PARAMS* param) | |
10283 | { | |
10284 | if (SvROK(sstr)) { | |
b162af07 SP |
10285 | SvRV_set(dstr, SvWEAKREF(sstr) |
10286 | ? sv_dup(SvRV(sstr), param) | |
10287 | : sv_dup_inc(SvRV(sstr), param)); | |
f880fe2f | 10288 | |
83841fad | 10289 | } |
3f7c398e | 10290 | else if (SvPVX_const(sstr)) { |
83841fad NIS |
10291 | /* Has something there */ |
10292 | if (SvLEN(sstr)) { | |
68795e93 | 10293 | /* Normal PV - clone whole allocated space */ |
3f7c398e | 10294 | SvPV_set(dstr, SAVEPVN(SvPVX_const(sstr), SvLEN(sstr)-1)); |
d3d0e6f1 NC |
10295 | if (SvREADONLY(sstr) && SvFAKE(sstr)) { |
10296 | /* Not that normal - actually sstr is copy on write. | |
10297 | But we are a true, independant SV, so: */ | |
10298 | SvREADONLY_off(dstr); | |
10299 | SvFAKE_off(dstr); | |
10300 | } | |
68795e93 | 10301 | } |
83841fad NIS |
10302 | else { |
10303 | /* Special case - not normally malloced for some reason */ | |
ef10be65 NC |
10304 | if ((SvREADONLY(sstr) && SvFAKE(sstr))) { |
10305 | /* A "shared" PV - clone it as "shared" PV */ | |
10306 | SvPV_set(dstr, | |
10307 | HEK_KEY(hek_dup(SvSHARED_HEK_FROM_PV(SvPVX_const(sstr)), | |
10308 | param))); | |
83841fad NIS |
10309 | } |
10310 | else { | |
10311 | /* Some other special case - random pointer */ | |
f880fe2f | 10312 | SvPV_set(dstr, SvPVX(sstr)); |
d3d0e6f1 | 10313 | } |
83841fad NIS |
10314 | } |
10315 | } | |
10316 | else { | |
10317 | /* Copy the Null */ | |
f880fe2f | 10318 | if (SvTYPE(dstr) == SVt_RV) |
b162af07 | 10319 | SvRV_set(dstr, NULL); |
f880fe2f SP |
10320 | else |
10321 | SvPV_set(dstr, 0); | |
83841fad NIS |
10322 | } |
10323 | } | |
10324 | ||
662fb8b2 NC |
10325 | /* duplicate an SV of any type (including AV, HV etc) */ |
10326 | ||
1d7c1841 | 10327 | SV * |
a8fc9800 | 10328 | Perl_sv_dup(pTHX_ SV *sstr, CLONE_PARAMS* param) |
1d7c1841 | 10329 | { |
27da23d5 | 10330 | dVAR; |
1d7c1841 GS |
10331 | SV *dstr; |
10332 | ||
10333 | if (!sstr || SvTYPE(sstr) == SVTYPEMASK) | |
10334 | return Nullsv; | |
10335 | /* look for it in the table first */ | |
10336 | dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr); | |
10337 | if (dstr) | |
10338 | return dstr; | |
10339 | ||
0405e91e AB |
10340 | if(param->flags & CLONEf_JOIN_IN) { |
10341 | /** We are joining here so we don't want do clone | |
10342 | something that is bad **/ | |
bfcb3514 | 10343 | const char *hvname; |
0405e91e AB |
10344 | |
10345 | if(SvTYPE(sstr) == SVt_PVHV && | |
bfcb3514 | 10346 | (hvname = HvNAME_get(sstr))) { |
0405e91e | 10347 | /** don't clone stashes if they already exist **/ |
bfcb3514 | 10348 | HV* old_stash = gv_stashpv(hvname,0); |
0405e91e AB |
10349 | return (SV*) old_stash; |
10350 | } | |
10351 | } | |
10352 | ||
1d7c1841 GS |
10353 | /* create anew and remember what it is */ |
10354 | new_SV(dstr); | |
fd0854ff DM |
10355 | |
10356 | #ifdef DEBUG_LEAKING_SCALARS | |
10357 | dstr->sv_debug_optype = sstr->sv_debug_optype; | |
10358 | dstr->sv_debug_line = sstr->sv_debug_line; | |
10359 | dstr->sv_debug_inpad = sstr->sv_debug_inpad; | |
10360 | dstr->sv_debug_cloned = 1; | |
10361 | # ifdef NETWARE | |
10362 | dstr->sv_debug_file = savepv(sstr->sv_debug_file); | |
10363 | # else | |
10364 | dstr->sv_debug_file = savesharedpv(sstr->sv_debug_file); | |
10365 | # endif | |
10366 | #endif | |
10367 | ||
1d7c1841 GS |
10368 | ptr_table_store(PL_ptr_table, sstr, dstr); |
10369 | ||
10370 | /* clone */ | |
10371 | SvFLAGS(dstr) = SvFLAGS(sstr); | |
10372 | SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */ | |
10373 | SvREFCNT(dstr) = 0; /* must be before any other dups! */ | |
10374 | ||
10375 | #ifdef DEBUGGING | |
3f7c398e | 10376 | if (SvANY(sstr) && PL_watch_pvx && SvPVX_const(sstr) == PL_watch_pvx) |
1d7c1841 | 10377 | PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n", |
3f7c398e | 10378 | PL_watch_pvx, SvPVX_const(sstr)); |
1d7c1841 GS |
10379 | #endif |
10380 | ||
9660f481 DM |
10381 | /* don't clone objects whose class has asked us not to */ |
10382 | if (SvOBJECT(sstr) && ! (SvFLAGS(SvSTASH(sstr)) & SVphv_CLONEABLE)) { | |
10383 | SvFLAGS(dstr) &= ~SVTYPEMASK; | |
10384 | SvOBJECT_off(dstr); | |
10385 | return dstr; | |
10386 | } | |
10387 | ||
1d7c1841 GS |
10388 | switch (SvTYPE(sstr)) { |
10389 | case SVt_NULL: | |
10390 | SvANY(dstr) = NULL; | |
10391 | break; | |
10392 | case SVt_IV: | |
339049b0 | 10393 | SvANY(dstr) = (XPVIV*)((char*)&(dstr->sv_u.svu_iv) - STRUCT_OFFSET(XPVIV, xiv_iv)); |
45977657 | 10394 | SvIV_set(dstr, SvIVX(sstr)); |
1d7c1841 GS |
10395 | break; |
10396 | case SVt_NV: | |
10397 | SvANY(dstr) = new_XNV(); | |
9d6ce603 | 10398 | SvNV_set(dstr, SvNVX(sstr)); |
1d7c1841 GS |
10399 | break; |
10400 | case SVt_RV: | |
339049b0 | 10401 | SvANY(dstr) = &(dstr->sv_u.svu_rv); |
83841fad | 10402 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); |
1d7c1841 | 10403 | break; |
662fb8b2 NC |
10404 | default: |
10405 | { | |
10406 | /* These are all the types that need complex bodies allocating. */ | |
10407 | size_t new_body_length; | |
10408 | size_t new_body_offset = 0; | |
10409 | void **new_body_arena; | |
10410 | void **new_body_arenaroot; | |
10411 | void *new_body; | |
10412 | ||
10413 | switch (SvTYPE(sstr)) { | |
10414 | default: | |
10415 | Perl_croak(aTHX_ "Bizarre SvTYPE [%" IVdf "]", | |
10416 | (IV)SvTYPE(sstr)); | |
10417 | break; | |
10418 | ||
10419 | case SVt_PVIO: | |
10420 | new_body = new_XPVIO(); | |
10421 | new_body_length = sizeof(XPVIO); | |
10422 | break; | |
10423 | case SVt_PVFM: | |
10424 | new_body = new_XPVFM(); | |
10425 | new_body_length = sizeof(XPVFM); | |
10426 | break; | |
10427 | ||
10428 | case SVt_PVHV: | |
10429 | new_body_arena = (void **) &PL_xpvhv_root; | |
10430 | new_body_arenaroot = (void **) &PL_xpvhv_arenaroot; | |
10431 | new_body_offset = STRUCT_OFFSET(XPVHV, xhv_fill) | |
10432 | - STRUCT_OFFSET(xpvhv_allocated, xhv_fill); | |
10433 | new_body_length = STRUCT_OFFSET(XPVHV, xmg_stash) | |
10434 | + sizeof (((XPVHV*)SvANY(sstr))->xmg_stash) | |
10435 | - new_body_offset; | |
10436 | goto new_body; | |
10437 | case SVt_PVAV: | |
10438 | new_body_arena = (void **) &PL_xpvav_root; | |
10439 | new_body_arenaroot = (void **) &PL_xpvav_arenaroot; | |
10440 | new_body_offset = STRUCT_OFFSET(XPVAV, xav_fill) | |
10441 | - STRUCT_OFFSET(xpvav_allocated, xav_fill); | |
10442 | new_body_length = STRUCT_OFFSET(XPVHV, xmg_stash) | |
10443 | + sizeof (((XPVHV*)SvANY(sstr))->xmg_stash) | |
10444 | - new_body_offset; | |
10445 | goto new_body; | |
10446 | case SVt_PVBM: | |
10447 | new_body_length = sizeof(XPVBM); | |
10448 | new_body_arena = (void **) &PL_xpvbm_root; | |
10449 | new_body_arenaroot = (void **) &PL_xpvbm_arenaroot; | |
10450 | goto new_body; | |
10451 | case SVt_PVGV: | |
10452 | if (GvUNIQUE((GV*)sstr)) { | |
10453 | SV *share; | |
10454 | if ((share = gv_share(sstr, param))) { | |
10455 | del_SV(dstr); | |
10456 | dstr = share; | |
10457 | ptr_table_store(PL_ptr_table, sstr, dstr); | |
5bd07a3d | 10458 | #if 0 |
662fb8b2 NC |
10459 | PerlIO_printf(Perl_debug_log, "sv_dup: sharing %s::%s\n", |
10460 | HvNAME_get(GvSTASH(share)), GvNAME(share)); | |
10461 | #endif | |
10462 | goto done_share; | |
10463 | } | |
10464 | } | |
10465 | new_body_length = sizeof(XPVGV); | |
10466 | new_body_arena = (void **) &PL_xpvgv_root; | |
10467 | new_body_arenaroot = (void **) &PL_xpvgv_arenaroot; | |
10468 | goto new_body; | |
10469 | case SVt_PVCV: | |
10470 | new_body_length = sizeof(XPVCV); | |
10471 | new_body_arena = (void **) &PL_xpvcv_root; | |
10472 | new_body_arenaroot = (void **) &PL_xpvcv_arenaroot; | |
10473 | goto new_body; | |
10474 | case SVt_PVLV: | |
10475 | new_body_length = sizeof(XPVLV); | |
10476 | new_body_arena = (void **) &PL_xpvlv_root; | |
10477 | new_body_arenaroot = (void **) &PL_xpvlv_arenaroot; | |
10478 | goto new_body; | |
10479 | case SVt_PVMG: | |
10480 | new_body_length = sizeof(XPVMG); | |
10481 | new_body_arena = (void **) &PL_xpvmg_root; | |
10482 | new_body_arenaroot = (void **) &PL_xpvmg_arenaroot; | |
10483 | goto new_body; | |
10484 | case SVt_PVNV: | |
10485 | new_body_length = sizeof(XPVNV); | |
10486 | new_body_arena = (void **) &PL_xpvnv_root; | |
10487 | new_body_arenaroot = (void **) &PL_xpvnv_arenaroot; | |
10488 | goto new_body; | |
10489 | case SVt_PVIV: | |
10490 | new_body_offset = STRUCT_OFFSET(XPVIV, xpv_cur) | |
10491 | - STRUCT_OFFSET(xpviv_allocated, xpv_cur); | |
10492 | new_body_length = sizeof(XPVIV) - new_body_offset; | |
10493 | new_body_arena = (void **) &PL_xpviv_root; | |
10494 | new_body_arenaroot = (void **) &PL_xpviv_arenaroot; | |
10495 | goto new_body; | |
10496 | case SVt_PV: | |
10497 | new_body_offset = STRUCT_OFFSET(XPV, xpv_cur) | |
10498 | - STRUCT_OFFSET(xpv_allocated, xpv_cur); | |
10499 | new_body_length = sizeof(XPV) - new_body_offset; | |
10500 | new_body_arena = (void **) &PL_xpv_root; | |
10501 | new_body_arenaroot = (void **) &PL_xpv_arenaroot; | |
10502 | new_body: | |
10503 | assert(new_body_length); | |
10504 | #ifndef PURIFY | |
dd690478 NC |
10505 | new_body = (void*)((char*)S_new_body(aTHX_ new_body_arenaroot, |
10506 | new_body_arena, | |
10507 | new_body_length) | |
10508 | - new_body_offset); | |
662fb8b2 NC |
10509 | #else |
10510 | /* We always allocated the full length item with PURIFY */ | |
10511 | new_body_length += new_body_offset; | |
10512 | new_body_offset = 0; | |
10513 | new_body = my_safemalloc(new_body_length); | |
5bd07a3d | 10514 | #endif |
1d7c1841 | 10515 | } |
662fb8b2 NC |
10516 | assert(new_body); |
10517 | SvANY(dstr) = new_body; | |
10518 | ||
10519 | Copy(((char*)SvANY(sstr)) + new_body_offset, | |
10520 | ((char*)SvANY(dstr)) + new_body_offset, | |
10521 | new_body_length, char); | |
10522 | ||
10523 | if (SvTYPE(sstr) != SVt_PVAV && SvTYPE(sstr) != SVt_PVHV) | |
10524 | Perl_rvpv_dup(aTHX_ dstr, sstr, param); | |
10525 | ||
10526 | /* The Copy above means that all the source (unduplicated) pointers | |
10527 | are now in the destination. We can check the flags and the | |
10528 | pointers in either, but it's possible that there's less cache | |
10529 | missing by always going for the destination. | |
10530 | FIXME - instrument and check that assumption */ | |
10531 | if (SvTYPE(sstr) >= SVt_PVMG) { | |
10532 | if (SvMAGIC(dstr)) | |
10533 | SvMAGIC_set(dstr, mg_dup(SvMAGIC(dstr), param)); | |
10534 | if (SvSTASH(dstr)) | |
10535 | SvSTASH_set(dstr, hv_dup_inc(SvSTASH(dstr), param)); | |
1d7c1841 | 10536 | } |
662fb8b2 NC |
10537 | |
10538 | switch (SvTYPE(sstr)) { | |
10539 | case SVt_PV: | |
10540 | break; | |
10541 | case SVt_PVIV: | |
10542 | break; | |
10543 | case SVt_PVNV: | |
10544 | break; | |
10545 | case SVt_PVMG: | |
10546 | break; | |
10547 | case SVt_PVBM: | |
10548 | break; | |
10549 | case SVt_PVLV: | |
10550 | /* XXX LvTARGOFF sometimes holds PMOP* when DEBUGGING */ | |
10551 | if (LvTYPE(dstr) == 't') /* for tie: unrefcnted fake (SV**) */ | |
10552 | LvTARG(dstr) = dstr; | |
10553 | else if (LvTYPE(dstr) == 'T') /* for tie: fake HE */ | |
10554 | LvTARG(dstr) = (SV*)he_dup((HE*)LvTARG(dstr), 0, param); | |
10555 | else | |
10556 | LvTARG(dstr) = sv_dup_inc(LvTARG(dstr), param); | |
10557 | break; | |
10558 | case SVt_PVGV: | |
10559 | GvNAME(dstr) = SAVEPVN(GvNAME(dstr), GvNAMELEN(dstr)); | |
10560 | GvSTASH(dstr) = hv_dup_inc(GvSTASH(dstr), param); | |
10561 | GvGP(dstr) = gp_dup(GvGP(dstr), param); | |
10562 | (void)GpREFCNT_inc(GvGP(dstr)); | |
10563 | break; | |
10564 | case SVt_PVIO: | |
10565 | IoIFP(dstr) = fp_dup(IoIFP(dstr), IoTYPE(dstr), param); | |
10566 | if (IoOFP(dstr) == IoIFP(sstr)) | |
10567 | IoOFP(dstr) = IoIFP(dstr); | |
10568 | else | |
10569 | IoOFP(dstr) = fp_dup(IoOFP(dstr), IoTYPE(dstr), param); | |
10570 | /* PL_rsfp_filters entries have fake IoDIRP() */ | |
10571 | if (IoDIRP(dstr) && !(IoFLAGS(dstr) & IOf_FAKE_DIRP)) | |
10572 | IoDIRP(dstr) = dirp_dup(IoDIRP(dstr)); | |
10573 | if(IoFLAGS(dstr) & IOf_FAKE_DIRP) { | |
10574 | /* I have no idea why fake dirp (rsfps) | |
10575 | should be treated differently but otherwise | |
10576 | we end up with leaks -- sky*/ | |
10577 | IoTOP_GV(dstr) = gv_dup_inc(IoTOP_GV(dstr), param); | |
10578 | IoFMT_GV(dstr) = gv_dup_inc(IoFMT_GV(dstr), param); | |
10579 | IoBOTTOM_GV(dstr) = gv_dup_inc(IoBOTTOM_GV(dstr), param); | |
10580 | } else { | |
10581 | IoTOP_GV(dstr) = gv_dup(IoTOP_GV(dstr), param); | |
10582 | IoFMT_GV(dstr) = gv_dup(IoFMT_GV(dstr), param); | |
10583 | IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(dstr), param); | |
10584 | } | |
10585 | IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(dstr)); | |
10586 | IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(dstr)); | |
10587 | IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(dstr)); | |
10588 | break; | |
10589 | case SVt_PVAV: | |
10590 | if (AvARRAY((AV*)sstr)) { | |
10591 | SV **dst_ary, **src_ary; | |
10592 | SSize_t items = AvFILLp((AV*)sstr) + 1; | |
10593 | ||
10594 | src_ary = AvARRAY((AV*)sstr); | |
10595 | Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*); | |
10596 | ptr_table_store(PL_ptr_table, src_ary, dst_ary); | |
10597 | SvPV_set(dstr, (char*)dst_ary); | |
10598 | AvALLOC((AV*)dstr) = dst_ary; | |
10599 | if (AvREAL((AV*)sstr)) { | |
10600 | while (items-- > 0) | |
10601 | *dst_ary++ = sv_dup_inc(*src_ary++, param); | |
10602 | } | |
10603 | else { | |
10604 | while (items-- > 0) | |
10605 | *dst_ary++ = sv_dup(*src_ary++, param); | |
10606 | } | |
10607 | items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr); | |
10608 | while (items-- > 0) { | |
10609 | *dst_ary++ = &PL_sv_undef; | |
10610 | } | |
bfcb3514 | 10611 | } |
662fb8b2 NC |
10612 | else { |
10613 | SvPV_set(dstr, Nullch); | |
10614 | AvALLOC((AV*)dstr) = (SV**)NULL; | |
b79f7545 | 10615 | } |
662fb8b2 NC |
10616 | break; |
10617 | case SVt_PVHV: | |
10618 | { | |
10619 | HEK *hvname = 0; | |
10620 | ||
10621 | if (HvARRAY((HV*)sstr)) { | |
10622 | STRLEN i = 0; | |
10623 | const bool sharekeys = !!HvSHAREKEYS(sstr); | |
10624 | XPVHV * const dxhv = (XPVHV*)SvANY(dstr); | |
10625 | XPVHV * const sxhv = (XPVHV*)SvANY(sstr); | |
10626 | char *darray; | |
10627 | New(0, darray, | |
10628 | PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1) | |
10629 | + (SvOOK(sstr) ? sizeof(struct xpvhv_aux) : 0), | |
10630 | char); | |
10631 | HvARRAY(dstr) = (HE**)darray; | |
10632 | while (i <= sxhv->xhv_max) { | |
10633 | HE *source = HvARRAY(sstr)[i]; | |
10634 | HvARRAY(dstr)[i] = source | |
10635 | ? he_dup(source, sharekeys, param) : 0; | |
10636 | ++i; | |
10637 | } | |
10638 | if (SvOOK(sstr)) { | |
10639 | struct xpvhv_aux *saux = HvAUX(sstr); | |
10640 | struct xpvhv_aux *daux = HvAUX(dstr); | |
10641 | /* This flag isn't copied. */ | |
10642 | /* SvOOK_on(hv) attacks the IV flags. */ | |
10643 | SvFLAGS(dstr) |= SVf_OOK; | |
10644 | ||
10645 | hvname = saux->xhv_name; | |
dd690478 NC |
10646 | daux->xhv_name |
10647 | = hvname ? hek_dup(hvname, param) : hvname; | |
662fb8b2 NC |
10648 | |
10649 | daux->xhv_riter = saux->xhv_riter; | |
10650 | daux->xhv_eiter = saux->xhv_eiter | |
dd690478 NC |
10651 | ? he_dup(saux->xhv_eiter, |
10652 | (bool)!!HvSHAREKEYS(sstr), param) : 0; | |
662fb8b2 NC |
10653 | } |
10654 | } | |
10655 | else { | |
10656 | SvPV_set(dstr, Nullch); | |
10657 | } | |
10658 | /* Record stashes for possible cloning in Perl_clone(). */ | |
10659 | if(hvname) | |
10660 | av_push(param->stashes, dstr); | |
10661 | } | |
10662 | break; | |
10663 | case SVt_PVFM: | |
10664 | case SVt_PVCV: | |
10665 | /* NOTE: not refcounted */ | |
10666 | CvSTASH(dstr) = hv_dup(CvSTASH(dstr), param); | |
10667 | OP_REFCNT_LOCK; | |
10668 | CvROOT(dstr) = OpREFCNT_inc(CvROOT(dstr)); | |
10669 | OP_REFCNT_UNLOCK; | |
10670 | if (CvCONST(dstr)) { | |
10671 | CvXSUBANY(dstr).any_ptr = GvUNIQUE(CvGV(dstr)) ? | |
10672 | SvREFCNT_inc(CvXSUBANY(dstr).any_ptr) : | |
10673 | sv_dup_inc((SV *)CvXSUBANY(dstr).any_ptr, param); | |
10674 | } | |
10675 | /* don't dup if copying back - CvGV isn't refcounted, so the | |
10676 | * duped GV may never be freed. A bit of a hack! DAPM */ | |
10677 | CvGV(dstr) = (param->flags & CLONEf_JOIN_IN) ? | |
10678 | Nullgv : gv_dup(CvGV(dstr), param) ; | |
10679 | if (!(param->flags & CLONEf_COPY_STACKS)) { | |
10680 | CvDEPTH(dstr) = 0; | |
10681 | } | |
10682 | PAD_DUP(CvPADLIST(dstr), CvPADLIST(sstr), param); | |
10683 | CvOUTSIDE(dstr) = | |
10684 | CvWEAKOUTSIDE(sstr) | |
10685 | ? cv_dup( CvOUTSIDE(dstr), param) | |
10686 | : cv_dup_inc(CvOUTSIDE(dstr), param); | |
10687 | if (!CvXSUB(dstr)) | |
10688 | CvFILE(dstr) = SAVEPV(CvFILE(dstr)); | |
10689 | break; | |
bfcb3514 | 10690 | } |
1d7c1841 | 10691 | } |
1d7c1841 GS |
10692 | } |
10693 | ||
662fb8b2 | 10694 | done_share: |
1d7c1841 GS |
10695 | if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO) |
10696 | ++PL_sv_objcount; | |
10697 | ||
10698 | return dstr; | |
d2d73c3e | 10699 | } |
1d7c1841 | 10700 | |
645c22ef DM |
10701 | /* duplicate a context */ |
10702 | ||
1d7c1841 | 10703 | PERL_CONTEXT * |
a8fc9800 | 10704 | Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max, CLONE_PARAMS* param) |
1d7c1841 GS |
10705 | { |
10706 | PERL_CONTEXT *ncxs; | |
10707 | ||
10708 | if (!cxs) | |
10709 | return (PERL_CONTEXT*)NULL; | |
10710 | ||
10711 | /* look for it in the table first */ | |
10712 | ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs); | |
10713 | if (ncxs) | |
10714 | return ncxs; | |
10715 | ||
10716 | /* create anew and remember what it is */ | |
10717 | Newz(56, ncxs, max + 1, PERL_CONTEXT); | |
10718 | ptr_table_store(PL_ptr_table, cxs, ncxs); | |
10719 | ||
10720 | while (ix >= 0) { | |
10721 | PERL_CONTEXT *cx = &cxs[ix]; | |
10722 | PERL_CONTEXT *ncx = &ncxs[ix]; | |
10723 | ncx->cx_type = cx->cx_type; | |
10724 | if (CxTYPE(cx) == CXt_SUBST) { | |
10725 | Perl_croak(aTHX_ "Cloning substitution context is unimplemented"); | |
10726 | } | |
10727 | else { | |
10728 | ncx->blk_oldsp = cx->blk_oldsp; | |
10729 | ncx->blk_oldcop = cx->blk_oldcop; | |
1d7c1841 GS |
10730 | ncx->blk_oldmarksp = cx->blk_oldmarksp; |
10731 | ncx->blk_oldscopesp = cx->blk_oldscopesp; | |
10732 | ncx->blk_oldpm = cx->blk_oldpm; | |
10733 | ncx->blk_gimme = cx->blk_gimme; | |
10734 | switch (CxTYPE(cx)) { | |
10735 | case CXt_SUB: | |
10736 | ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0 | |
d2d73c3e AB |
10737 | ? cv_dup_inc(cx->blk_sub.cv, param) |
10738 | : cv_dup(cx->blk_sub.cv,param)); | |
1d7c1841 | 10739 | ncx->blk_sub.argarray = (cx->blk_sub.hasargs |
d2d73c3e | 10740 | ? av_dup_inc(cx->blk_sub.argarray, param) |
1d7c1841 | 10741 | : Nullav); |
d2d73c3e | 10742 | ncx->blk_sub.savearray = av_dup_inc(cx->blk_sub.savearray, param); |
1d7c1841 GS |
10743 | ncx->blk_sub.olddepth = cx->blk_sub.olddepth; |
10744 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; | |
10745 | ncx->blk_sub.lval = cx->blk_sub.lval; | |
f39bc417 | 10746 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
10747 | break; |
10748 | case CXt_EVAL: | |
10749 | ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval; | |
10750 | ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type; | |
b47cad08 | 10751 | ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv, param); |
1d7c1841 | 10752 | ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root; |
d2d73c3e | 10753 | ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text, param); |
f39bc417 | 10754 | ncx->blk_eval.retop = cx->blk_eval.retop; |
1d7c1841 GS |
10755 | break; |
10756 | case CXt_LOOP: | |
10757 | ncx->blk_loop.label = cx->blk_loop.label; | |
10758 | ncx->blk_loop.resetsp = cx->blk_loop.resetsp; | |
10759 | ncx->blk_loop.redo_op = cx->blk_loop.redo_op; | |
10760 | ncx->blk_loop.next_op = cx->blk_loop.next_op; | |
10761 | ncx->blk_loop.last_op = cx->blk_loop.last_op; | |
10762 | ncx->blk_loop.iterdata = (CxPADLOOP(cx) | |
10763 | ? cx->blk_loop.iterdata | |
d2d73c3e | 10764 | : gv_dup((GV*)cx->blk_loop.iterdata, param)); |
f3548bdc DM |
10765 | ncx->blk_loop.oldcomppad |
10766 | = (PAD*)ptr_table_fetch(PL_ptr_table, | |
10767 | cx->blk_loop.oldcomppad); | |
d2d73c3e AB |
10768 | ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave, param); |
10769 | ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval, param); | |
10770 | ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary, param); | |
1d7c1841 GS |
10771 | ncx->blk_loop.iterix = cx->blk_loop.iterix; |
10772 | ncx->blk_loop.itermax = cx->blk_loop.itermax; | |
10773 | break; | |
10774 | case CXt_FORMAT: | |
d2d73c3e AB |
10775 | ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv, param); |
10776 | ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv, param); | |
10777 | ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv, param); | |
1d7c1841 | 10778 | ncx->blk_sub.hasargs = cx->blk_sub.hasargs; |
f39bc417 | 10779 | ncx->blk_sub.retop = cx->blk_sub.retop; |
1d7c1841 GS |
10780 | break; |
10781 | case CXt_BLOCK: | |
10782 | case CXt_NULL: | |
10783 | break; | |
10784 | } | |
10785 | } | |
10786 | --ix; | |
10787 | } | |
10788 | return ncxs; | |
10789 | } | |
10790 | ||
645c22ef DM |
10791 | /* duplicate a stack info structure */ |
10792 | ||
1d7c1841 | 10793 | PERL_SI * |
a8fc9800 | 10794 | Perl_si_dup(pTHX_ PERL_SI *si, CLONE_PARAMS* param) |
1d7c1841 GS |
10795 | { |
10796 | PERL_SI *nsi; | |
10797 | ||
10798 | if (!si) | |
10799 | return (PERL_SI*)NULL; | |
10800 | ||
10801 | /* look for it in the table first */ | |
10802 | nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si); | |
10803 | if (nsi) | |
10804 | return nsi; | |
10805 | ||
10806 | /* create anew and remember what it is */ | |
10807 | Newz(56, nsi, 1, PERL_SI); | |
10808 | ptr_table_store(PL_ptr_table, si, nsi); | |
10809 | ||
d2d73c3e | 10810 | nsi->si_stack = av_dup_inc(si->si_stack, param); |
1d7c1841 GS |
10811 | nsi->si_cxix = si->si_cxix; |
10812 | nsi->si_cxmax = si->si_cxmax; | |
d2d73c3e | 10813 | nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax, param); |
1d7c1841 | 10814 | nsi->si_type = si->si_type; |
d2d73c3e AB |
10815 | nsi->si_prev = si_dup(si->si_prev, param); |
10816 | nsi->si_next = si_dup(si->si_next, param); | |
1d7c1841 GS |
10817 | nsi->si_markoff = si->si_markoff; |
10818 | ||
10819 | return nsi; | |
10820 | } | |
10821 | ||
10822 | #define POPINT(ss,ix) ((ss)[--(ix)].any_i32) | |
10823 | #define TOPINT(ss,ix) ((ss)[ix].any_i32) | |
10824 | #define POPLONG(ss,ix) ((ss)[--(ix)].any_long) | |
10825 | #define TOPLONG(ss,ix) ((ss)[ix].any_long) | |
10826 | #define POPIV(ss,ix) ((ss)[--(ix)].any_iv) | |
10827 | #define TOPIV(ss,ix) ((ss)[ix].any_iv) | |
38d8b13e HS |
10828 | #define POPBOOL(ss,ix) ((ss)[--(ix)].any_bool) |
10829 | #define TOPBOOL(ss,ix) ((ss)[ix].any_bool) | |
1d7c1841 GS |
10830 | #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr) |
10831 | #define TOPPTR(ss,ix) ((ss)[ix].any_ptr) | |
10832 | #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr) | |
10833 | #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr) | |
10834 | #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr) | |
10835 | #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr) | |
10836 | ||
10837 | /* XXXXX todo */ | |
10838 | #define pv_dup_inc(p) SAVEPV(p) | |
10839 | #define pv_dup(p) SAVEPV(p) | |
10840 | #define svp_dup_inc(p,pp) any_dup(p,pp) | |
10841 | ||
645c22ef DM |
10842 | /* map any object to the new equivent - either something in the |
10843 | * ptr table, or something in the interpreter structure | |
10844 | */ | |
10845 | ||
1d7c1841 | 10846 | void * |
53c1dcc0 | 10847 | Perl_any_dup(pTHX_ void *v, const PerlInterpreter *proto_perl) |
1d7c1841 GS |
10848 | { |
10849 | void *ret; | |
10850 | ||
10851 | if (!v) | |
10852 | return (void*)NULL; | |
10853 | ||
10854 | /* look for it in the table first */ | |
10855 | ret = ptr_table_fetch(PL_ptr_table, v); | |
10856 | if (ret) | |
10857 | return ret; | |
10858 | ||
10859 | /* see if it is part of the interpreter structure */ | |
10860 | if (v >= (void*)proto_perl && v < (void*)(proto_perl+1)) | |
acfe0abc | 10861 | ret = (void*)(((char*)aTHX) + (((char*)v) - (char*)proto_perl)); |
05ec9bb3 | 10862 | else { |
1d7c1841 | 10863 | ret = v; |
05ec9bb3 | 10864 | } |
1d7c1841 GS |
10865 | |
10866 | return ret; | |
10867 | } | |
10868 | ||
645c22ef DM |
10869 | /* duplicate the save stack */ |
10870 | ||
1d7c1841 | 10871 | ANY * |
a8fc9800 | 10872 | Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param) |
1d7c1841 | 10873 | { |
53c1dcc0 AL |
10874 | ANY * const ss = proto_perl->Tsavestack; |
10875 | const I32 max = proto_perl->Tsavestack_max; | |
10876 | I32 ix = proto_perl->Tsavestack_ix; | |
1d7c1841 GS |
10877 | ANY *nss; |
10878 | SV *sv; | |
10879 | GV *gv; | |
10880 | AV *av; | |
10881 | HV *hv; | |
10882 | void* ptr; | |
10883 | int intval; | |
10884 | long longval; | |
10885 | GP *gp; | |
10886 | IV iv; | |
c4e33207 | 10887 | char *c = NULL; |
1d7c1841 | 10888 | void (*dptr) (void*); |
acfe0abc | 10889 | void (*dxptr) (pTHX_ void*); |
1d7c1841 GS |
10890 | |
10891 | Newz(54, nss, max, ANY); | |
10892 | ||
10893 | while (ix > 0) { | |
b464bac0 | 10894 | I32 i = POPINT(ss,ix); |
1d7c1841 GS |
10895 | TOPINT(nss,ix) = i; |
10896 | switch (i) { | |
10897 | case SAVEt_ITEM: /* normal string */ | |
10898 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10899 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10900 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 10901 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10902 | break; |
10903 | case SAVEt_SV: /* scalar reference */ | |
10904 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10905 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 10906 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10907 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 | 10908 | break; |
f4dd75d9 GS |
10909 | case SAVEt_GENERIC_PVREF: /* generic char* */ |
10910 | c = (char*)POPPTR(ss,ix); | |
10911 | TOPPTR(nss,ix) = pv_dup(c); | |
10912 | ptr = POPPTR(ss,ix); | |
10913 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10914 | break; | |
05ec9bb3 NIS |
10915 | case SAVEt_SHARED_PVREF: /* char* in shared space */ |
10916 | c = (char*)POPPTR(ss,ix); | |
10917 | TOPPTR(nss,ix) = savesharedpv(c); | |
10918 | ptr = POPPTR(ss,ix); | |
10919 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10920 | break; | |
1d7c1841 GS |
10921 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
10922 | case SAVEt_SVREF: /* scalar reference */ | |
10923 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10924 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
10925 | ptr = POPPTR(ss,ix); |
10926 | TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */ | |
10927 | break; | |
10928 | case SAVEt_AV: /* array reference */ | |
10929 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10930 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 | 10931 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10932 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10933 | break; |
10934 | case SAVEt_HV: /* hash reference */ | |
10935 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10936 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 | 10937 | gv = (GV*)POPPTR(ss,ix); |
d2d73c3e | 10938 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10939 | break; |
10940 | case SAVEt_INT: /* int reference */ | |
10941 | ptr = POPPTR(ss,ix); | |
10942 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10943 | intval = (int)POPINT(ss,ix); | |
10944 | TOPINT(nss,ix) = intval; | |
10945 | break; | |
10946 | case SAVEt_LONG: /* long reference */ | |
10947 | ptr = POPPTR(ss,ix); | |
10948 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10949 | longval = (long)POPLONG(ss,ix); | |
10950 | TOPLONG(nss,ix) = longval; | |
10951 | break; | |
10952 | case SAVEt_I32: /* I32 reference */ | |
10953 | case SAVEt_I16: /* I16 reference */ | |
10954 | case SAVEt_I8: /* I8 reference */ | |
10955 | ptr = POPPTR(ss,ix); | |
10956 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10957 | i = POPINT(ss,ix); | |
10958 | TOPINT(nss,ix) = i; | |
10959 | break; | |
10960 | case SAVEt_IV: /* IV reference */ | |
10961 | ptr = POPPTR(ss,ix); | |
10962 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10963 | iv = POPIV(ss,ix); | |
10964 | TOPIV(nss,ix) = iv; | |
10965 | break; | |
10966 | case SAVEt_SPTR: /* SV* reference */ | |
10967 | ptr = POPPTR(ss,ix); | |
10968 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10969 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 10970 | TOPPTR(nss,ix) = sv_dup(sv, param); |
1d7c1841 GS |
10971 | break; |
10972 | case SAVEt_VPTR: /* random* reference */ | |
10973 | ptr = POPPTR(ss,ix); | |
10974 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10975 | ptr = POPPTR(ss,ix); | |
10976 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10977 | break; | |
10978 | case SAVEt_PPTR: /* char* reference */ | |
10979 | ptr = POPPTR(ss,ix); | |
10980 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10981 | c = (char*)POPPTR(ss,ix); | |
10982 | TOPPTR(nss,ix) = pv_dup(c); | |
10983 | break; | |
10984 | case SAVEt_HPTR: /* HV* reference */ | |
10985 | ptr = POPPTR(ss,ix); | |
10986 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10987 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 10988 | TOPPTR(nss,ix) = hv_dup(hv, param); |
1d7c1841 GS |
10989 | break; |
10990 | case SAVEt_APTR: /* AV* reference */ | |
10991 | ptr = POPPTR(ss,ix); | |
10992 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
10993 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 10994 | TOPPTR(nss,ix) = av_dup(av, param); |
1d7c1841 GS |
10995 | break; |
10996 | case SAVEt_NSTAB: | |
10997 | gv = (GV*)POPPTR(ss,ix); | |
d2d73c3e | 10998 | TOPPTR(nss,ix) = gv_dup(gv, param); |
1d7c1841 GS |
10999 | break; |
11000 | case SAVEt_GP: /* scalar reference */ | |
11001 | gp = (GP*)POPPTR(ss,ix); | |
d2d73c3e | 11002 | TOPPTR(nss,ix) = gp = gp_dup(gp, param); |
1d7c1841 GS |
11003 | (void)GpREFCNT_inc(gp); |
11004 | gv = (GV*)POPPTR(ss,ix); | |
2ed3c8fc | 11005 | TOPPTR(nss,ix) = gv_dup_inc(gv, param); |
1d7c1841 GS |
11006 | c = (char*)POPPTR(ss,ix); |
11007 | TOPPTR(nss,ix) = pv_dup(c); | |
11008 | iv = POPIV(ss,ix); | |
11009 | TOPIV(nss,ix) = iv; | |
11010 | iv = POPIV(ss,ix); | |
11011 | TOPIV(nss,ix) = iv; | |
11012 | break; | |
11013 | case SAVEt_FREESV: | |
26d9b02f | 11014 | case SAVEt_MORTALIZESV: |
1d7c1841 | 11015 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11016 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11017 | break; |
11018 | case SAVEt_FREEOP: | |
11019 | ptr = POPPTR(ss,ix); | |
11020 | if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) { | |
11021 | /* these are assumed to be refcounted properly */ | |
53c1dcc0 | 11022 | OP *o; |
1d7c1841 GS |
11023 | switch (((OP*)ptr)->op_type) { |
11024 | case OP_LEAVESUB: | |
11025 | case OP_LEAVESUBLV: | |
11026 | case OP_LEAVEEVAL: | |
11027 | case OP_LEAVE: | |
11028 | case OP_SCOPE: | |
11029 | case OP_LEAVEWRITE: | |
e977893f GS |
11030 | TOPPTR(nss,ix) = ptr; |
11031 | o = (OP*)ptr; | |
11032 | OpREFCNT_inc(o); | |
1d7c1841 GS |
11033 | break; |
11034 | default: | |
11035 | TOPPTR(nss,ix) = Nullop; | |
11036 | break; | |
11037 | } | |
11038 | } | |
11039 | else | |
11040 | TOPPTR(nss,ix) = Nullop; | |
11041 | break; | |
11042 | case SAVEt_FREEPV: | |
11043 | c = (char*)POPPTR(ss,ix); | |
11044 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11045 | break; | |
11046 | case SAVEt_CLEARSV: | |
11047 | longval = POPLONG(ss,ix); | |
11048 | TOPLONG(nss,ix) = longval; | |
11049 | break; | |
11050 | case SAVEt_DELETE: | |
11051 | hv = (HV*)POPPTR(ss,ix); | |
d2d73c3e | 11052 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11053 | c = (char*)POPPTR(ss,ix); |
11054 | TOPPTR(nss,ix) = pv_dup_inc(c); | |
11055 | i = POPINT(ss,ix); | |
11056 | TOPINT(nss,ix) = i; | |
11057 | break; | |
11058 | case SAVEt_DESTRUCTOR: | |
11059 | ptr = POPPTR(ss,ix); | |
11060 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11061 | dptr = POPDPTR(ss,ix); | |
8141890a JH |
11062 | TOPDPTR(nss,ix) = DPTR2FPTR(void (*)(void*), |
11063 | any_dup(FPTR2DPTR(void *, dptr), | |
11064 | proto_perl)); | |
1d7c1841 GS |
11065 | break; |
11066 | case SAVEt_DESTRUCTOR_X: | |
11067 | ptr = POPPTR(ss,ix); | |
11068 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */ | |
11069 | dxptr = POPDXPTR(ss,ix); | |
8141890a JH |
11070 | TOPDXPTR(nss,ix) = DPTR2FPTR(void (*)(pTHX_ void*), |
11071 | any_dup(FPTR2DPTR(void *, dxptr), | |
11072 | proto_perl)); | |
1d7c1841 GS |
11073 | break; |
11074 | case SAVEt_REGCONTEXT: | |
11075 | case SAVEt_ALLOC: | |
11076 | i = POPINT(ss,ix); | |
11077 | TOPINT(nss,ix) = i; | |
11078 | ix -= i; | |
11079 | break; | |
11080 | case SAVEt_STACK_POS: /* Position on Perl stack */ | |
11081 | i = POPINT(ss,ix); | |
11082 | TOPINT(nss,ix) = i; | |
11083 | break; | |
11084 | case SAVEt_AELEM: /* array element */ | |
11085 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11086 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 GS |
11087 | i = POPINT(ss,ix); |
11088 | TOPINT(nss,ix) = i; | |
11089 | av = (AV*)POPPTR(ss,ix); | |
d2d73c3e | 11090 | TOPPTR(nss,ix) = av_dup_inc(av, param); |
1d7c1841 GS |
11091 | break; |
11092 | case SAVEt_HELEM: /* hash element */ | |
11093 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11094 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11095 | sv = (SV*)POPPTR(ss,ix); |
d2d73c3e | 11096 | TOPPTR(nss,ix) = sv_dup_inc(sv, param); |
1d7c1841 | 11097 | hv = (HV*)POPPTR(ss,ix); |
d2d73c3e | 11098 | TOPPTR(nss,ix) = hv_dup_inc(hv, param); |
1d7c1841 GS |
11099 | break; |
11100 | case SAVEt_OP: | |
11101 | ptr = POPPTR(ss,ix); | |
11102 | TOPPTR(nss,ix) = ptr; | |
11103 | break; | |
11104 | case SAVEt_HINTS: | |
11105 | i = POPINT(ss,ix); | |
11106 | TOPINT(nss,ix) = i; | |
11107 | break; | |
c4410b1b GS |
11108 | case SAVEt_COMPPAD: |
11109 | av = (AV*)POPPTR(ss,ix); | |
58ed4fbe | 11110 | TOPPTR(nss,ix) = av_dup(av, param); |
c4410b1b | 11111 | break; |
c3564e5c GS |
11112 | case SAVEt_PADSV: |
11113 | longval = (long)POPLONG(ss,ix); | |
11114 | TOPLONG(nss,ix) = longval; | |
11115 | ptr = POPPTR(ss,ix); | |
11116 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); | |
11117 | sv = (SV*)POPPTR(ss,ix); | |
d2d73c3e | 11118 | TOPPTR(nss,ix) = sv_dup(sv, param); |
c3564e5c | 11119 | break; |
a1bb4754 | 11120 | case SAVEt_BOOL: |
38d8b13e | 11121 | ptr = POPPTR(ss,ix); |
b9609c01 | 11122 | TOPPTR(nss,ix) = any_dup(ptr, proto_perl); |
38d8b13e | 11123 | longval = (long)POPBOOL(ss,ix); |
b9609c01 | 11124 | TOPBOOL(nss,ix) = (bool)longval; |
a1bb4754 | 11125 | break; |
8bd2680e MHM |
11126 | case SAVEt_SET_SVFLAGS: |
11127 | i = POPINT(ss,ix); | |
11128 | TOPINT(nss,ix) = i; | |
11129 | i = POPINT(ss,ix); | |
11130 | TOPINT(nss,ix) = i; | |
11131 | sv = (SV*)POPPTR(ss,ix); | |
11132 | TOPPTR(nss,ix) = sv_dup(sv, param); | |
11133 | break; | |
1d7c1841 GS |
11134 | default: |
11135 | Perl_croak(aTHX_ "panic: ss_dup inconsistency"); | |
11136 | } | |
11137 | } | |
11138 | ||
11139 | return nss; | |
11140 | } | |
11141 | ||
9660f481 DM |
11142 | |
11143 | /* if sv is a stash, call $class->CLONE_SKIP(), and set the SVphv_CLONEABLE | |
11144 | * flag to the result. This is done for each stash before cloning starts, | |
11145 | * so we know which stashes want their objects cloned */ | |
11146 | ||
11147 | static void | |
11148 | do_mark_cloneable_stash(pTHX_ SV *sv) | |
11149 | { | |
53c1dcc0 | 11150 | const HEK * const hvname = HvNAME_HEK((HV*)sv); |
bfcb3514 | 11151 | if (hvname) { |
53c1dcc0 | 11152 | GV* const cloner = gv_fetchmethod_autoload((HV*)sv, "CLONE_SKIP", 0); |
9660f481 DM |
11153 | SvFLAGS(sv) |= SVphv_CLONEABLE; /* clone objects by default */ |
11154 | if (cloner && GvCV(cloner)) { | |
11155 | dSP; | |
11156 | UV status; | |
11157 | ||
11158 | ENTER; | |
11159 | SAVETMPS; | |
11160 | PUSHMARK(SP); | |
84bda14a | 11161 | XPUSHs(sv_2mortal(newSVhek(hvname))); |
9660f481 DM |
11162 | PUTBACK; |
11163 | call_sv((SV*)GvCV(cloner), G_SCALAR); | |
11164 | SPAGAIN; | |
11165 | status = POPu; | |
11166 | PUTBACK; | |
11167 | FREETMPS; | |
11168 | LEAVE; | |
11169 | if (status) | |
11170 | SvFLAGS(sv) &= ~SVphv_CLONEABLE; | |
11171 | } | |
11172 | } | |
11173 | } | |
11174 | ||
11175 | ||
11176 | ||
645c22ef DM |
11177 | /* |
11178 | =for apidoc perl_clone | |
11179 | ||
11180 | Create and return a new interpreter by cloning the current one. | |
11181 | ||
4be49ee6 | 11182 | perl_clone takes these flags as parameters: |
6a78b4db | 11183 | |
7a5fa8a2 NIS |
11184 | CLONEf_COPY_STACKS - is used to, well, copy the stacks also, |
11185 | without it we only clone the data and zero the stacks, | |
11186 | with it we copy the stacks and the new perl interpreter is | |
11187 | ready to run at the exact same point as the previous one. | |
11188 | The pseudo-fork code uses COPY_STACKS while the | |
6a78b4db AB |
11189 | threads->new doesn't. |
11190 | ||
11191 | CLONEf_KEEP_PTR_TABLE | |
7a5fa8a2 NIS |
11192 | perl_clone keeps a ptr_table with the pointer of the old |
11193 | variable as a key and the new variable as a value, | |
11194 | this allows it to check if something has been cloned and not | |
11195 | clone it again but rather just use the value and increase the | |
11196 | refcount. If KEEP_PTR_TABLE is not set then perl_clone will kill | |
11197 | the ptr_table using the function | |
11198 | C<ptr_table_free(PL_ptr_table); PL_ptr_table = NULL;>, | |
11199 | reason to keep it around is if you want to dup some of your own | |
11200 | variable who are outside the graph perl scans, example of this | |
6a78b4db AB |
11201 | code is in threads.xs create |
11202 | ||
11203 | CLONEf_CLONE_HOST | |
7a5fa8a2 NIS |
11204 | This is a win32 thing, it is ignored on unix, it tells perls |
11205 | win32host code (which is c++) to clone itself, this is needed on | |
11206 | win32 if you want to run two threads at the same time, | |
11207 | if you just want to do some stuff in a separate perl interpreter | |
11208 | and then throw it away and return to the original one, | |
6a78b4db AB |
11209 | you don't need to do anything. |
11210 | ||
645c22ef DM |
11211 | =cut |
11212 | */ | |
11213 | ||
11214 | /* XXX the above needs expanding by someone who actually understands it ! */ | |
3fc56081 NK |
11215 | EXTERN_C PerlInterpreter * |
11216 | perl_clone_host(PerlInterpreter* proto_perl, UV flags); | |
645c22ef | 11217 | |
1d7c1841 GS |
11218 | PerlInterpreter * |
11219 | perl_clone(PerlInterpreter *proto_perl, UV flags) | |
11220 | { | |
27da23d5 | 11221 | dVAR; |
1d7c1841 | 11222 | #ifdef PERL_IMPLICIT_SYS |
c43294b8 AB |
11223 | |
11224 | /* perlhost.h so we need to call into it | |
11225 | to clone the host, CPerlHost should have a c interface, sky */ | |
11226 | ||
11227 | if (flags & CLONEf_CLONE_HOST) { | |
11228 | return perl_clone_host(proto_perl,flags); | |
11229 | } | |
11230 | return perl_clone_using(proto_perl, flags, | |
1d7c1841 GS |
11231 | proto_perl->IMem, |
11232 | proto_perl->IMemShared, | |
11233 | proto_perl->IMemParse, | |
11234 | proto_perl->IEnv, | |
11235 | proto_perl->IStdIO, | |
11236 | proto_perl->ILIO, | |
11237 | proto_perl->IDir, | |
11238 | proto_perl->ISock, | |
11239 | proto_perl->IProc); | |
11240 | } | |
11241 | ||
11242 | PerlInterpreter * | |
11243 | perl_clone_using(PerlInterpreter *proto_perl, UV flags, | |
11244 | struct IPerlMem* ipM, struct IPerlMem* ipMS, | |
11245 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, | |
11246 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, | |
11247 | struct IPerlDir* ipD, struct IPerlSock* ipS, | |
11248 | struct IPerlProc* ipP) | |
11249 | { | |
11250 | /* XXX many of the string copies here can be optimized if they're | |
11251 | * constants; they need to be allocated as common memory and just | |
11252 | * their pointers copied. */ | |
11253 | ||
8fc9efbd | 11254 | IV i; |
64aa0685 GS |
11255 | CLONE_PARAMS clone_params; |
11256 | CLONE_PARAMS* param = &clone_params; | |
d2d73c3e | 11257 | |
1d7c1841 | 11258 | PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
9660f481 DM |
11259 | /* for each stash, determine whether its objects should be cloned */ |
11260 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 11261 | PERL_SET_THX(my_perl); |
1d7c1841 | 11262 | |
acfe0abc | 11263 | # ifdef DEBUGGING |
a4530404 | 11264 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11265 | PL_op = Nullop; |
c008732b | 11266 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11267 | PL_markstack = 0; |
11268 | PL_scopestack = 0; | |
11269 | PL_savestack = 0; | |
22f7c9c9 JH |
11270 | PL_savestack_ix = 0; |
11271 | PL_savestack_max = -1; | |
66fe0623 | 11272 | PL_sig_pending = 0; |
25596c82 | 11273 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
acfe0abc | 11274 | # else /* !DEBUGGING */ |
1d7c1841 | 11275 | Zero(my_perl, 1, PerlInterpreter); |
acfe0abc | 11276 | # endif /* DEBUGGING */ |
1d7c1841 GS |
11277 | |
11278 | /* host pointers */ | |
11279 | PL_Mem = ipM; | |
11280 | PL_MemShared = ipMS; | |
11281 | PL_MemParse = ipMP; | |
11282 | PL_Env = ipE; | |
11283 | PL_StdIO = ipStd; | |
11284 | PL_LIO = ipLIO; | |
11285 | PL_Dir = ipD; | |
11286 | PL_Sock = ipS; | |
11287 | PL_Proc = ipP; | |
1d7c1841 GS |
11288 | #else /* !PERL_IMPLICIT_SYS */ |
11289 | IV i; | |
64aa0685 GS |
11290 | CLONE_PARAMS clone_params; |
11291 | CLONE_PARAMS* param = &clone_params; | |
1d7c1841 | 11292 | PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
9660f481 DM |
11293 | /* for each stash, determine whether its objects should be cloned */ |
11294 | S_visit(proto_perl, do_mark_cloneable_stash, SVt_PVHV, SVTYPEMASK); | |
ba869deb | 11295 | PERL_SET_THX(my_perl); |
1d7c1841 GS |
11296 | |
11297 | # ifdef DEBUGGING | |
a4530404 | 11298 | Poison(my_perl, 1, PerlInterpreter); |
fd0854ff | 11299 | PL_op = Nullop; |
c008732b | 11300 | PL_curcop = (COP *)Nullop; |
1d7c1841 GS |
11301 | PL_markstack = 0; |
11302 | PL_scopestack = 0; | |
11303 | PL_savestack = 0; | |
22f7c9c9 JH |
11304 | PL_savestack_ix = 0; |
11305 | PL_savestack_max = -1; | |
66fe0623 | 11306 | PL_sig_pending = 0; |
25596c82 | 11307 | Zero(&PL_debug_pad, 1, struct perl_debug_pad); |
1d7c1841 GS |
11308 | # else /* !DEBUGGING */ |
11309 | Zero(my_perl, 1, PerlInterpreter); | |
11310 | # endif /* DEBUGGING */ | |
11311 | #endif /* PERL_IMPLICIT_SYS */ | |
83236556 | 11312 | param->flags = flags; |
59b40662 | 11313 | param->proto_perl = proto_perl; |
1d7c1841 GS |
11314 | |
11315 | /* arena roots */ | |
612f20c3 | 11316 | PL_xnv_arenaroot = NULL; |
1d7c1841 | 11317 | PL_xnv_root = NULL; |
612f20c3 | 11318 | PL_xpv_arenaroot = NULL; |
1d7c1841 | 11319 | PL_xpv_root = NULL; |
612f20c3 | 11320 | PL_xpviv_arenaroot = NULL; |
1d7c1841 | 11321 | PL_xpviv_root = NULL; |
612f20c3 | 11322 | PL_xpvnv_arenaroot = NULL; |
1d7c1841 | 11323 | PL_xpvnv_root = NULL; |
612f20c3 | 11324 | PL_xpvcv_arenaroot = NULL; |
1d7c1841 | 11325 | PL_xpvcv_root = NULL; |
612f20c3 | 11326 | PL_xpvav_arenaroot = NULL; |
1d7c1841 | 11327 | PL_xpvav_root = NULL; |
612f20c3 | 11328 | PL_xpvhv_arenaroot = NULL; |
1d7c1841 | 11329 | PL_xpvhv_root = NULL; |
612f20c3 | 11330 | PL_xpvmg_arenaroot = NULL; |
1d7c1841 | 11331 | PL_xpvmg_root = NULL; |
7552b40b DM |
11332 | PL_xpvgv_arenaroot = NULL; |
11333 | PL_xpvgv_root = NULL; | |
612f20c3 | 11334 | PL_xpvlv_arenaroot = NULL; |
1d7c1841 | 11335 | PL_xpvlv_root = NULL; |
612f20c3 | 11336 | PL_xpvbm_arenaroot = NULL; |
1d7c1841 | 11337 | PL_xpvbm_root = NULL; |
612f20c3 | 11338 | PL_he_arenaroot = NULL; |
1d7c1841 | 11339 | PL_he_root = NULL; |
892b45be | 11340 | #if defined(USE_ITHREADS) |
32e691d0 NC |
11341 | PL_pte_arenaroot = NULL; |
11342 | PL_pte_root = NULL; | |
892b45be | 11343 | #endif |
1d7c1841 GS |
11344 | PL_nice_chunk = NULL; |
11345 | PL_nice_chunk_size = 0; | |
11346 | PL_sv_count = 0; | |
11347 | PL_sv_objcount = 0; | |
11348 | PL_sv_root = Nullsv; | |
11349 | PL_sv_arenaroot = Nullsv; | |
11350 | ||
11351 | PL_debug = proto_perl->Idebug; | |
11352 | ||
8df990a8 NC |
11353 | PL_hash_seed = proto_perl->Ihash_seed; |
11354 | PL_rehash_seed = proto_perl->Irehash_seed; | |
11355 | ||
e5dd39fc | 11356 | #ifdef USE_REENTRANT_API |
68853529 SB |
11357 | /* XXX: things like -Dm will segfault here in perlio, but doing |
11358 | * PERL_SET_CONTEXT(proto_perl); | |
11359 | * breaks too many other things | |
11360 | */ | |
59bd0823 | 11361 | Perl_reentrant_init(aTHX); |
e5dd39fc AB |
11362 | #endif |
11363 | ||
1d7c1841 GS |
11364 | /* create SV map for pointer relocation */ |
11365 | PL_ptr_table = ptr_table_new(); | |
11366 | ||
11367 | /* initialize these special pointers as early as possible */ | |
11368 | SvANY(&PL_sv_undef) = NULL; | |
11369 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; | |
11370 | SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL; | |
11371 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef); | |
11372 | ||
1d7c1841 | 11373 | SvANY(&PL_sv_no) = new_XPVNV(); |
1d7c1841 | 11374 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
0309f36e NC |
11375 | SvFLAGS(&PL_sv_no) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11376 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 11377 | SvPV_set(&PL_sv_no, SAVEPVN(PL_No, 0)); |
b162af07 SP |
11378 | SvCUR_set(&PL_sv_no, 0); |
11379 | SvLEN_set(&PL_sv_no, 1); | |
45977657 | 11380 | SvIV_set(&PL_sv_no, 0); |
9d6ce603 | 11381 | SvNV_set(&PL_sv_no, 0); |
1d7c1841 GS |
11382 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no); |
11383 | ||
1d7c1841 | 11384 | SvANY(&PL_sv_yes) = new_XPVNV(); |
1d7c1841 | 11385 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
0309f36e NC |
11386 | SvFLAGS(&PL_sv_yes) = SVp_IOK|SVf_IOK|SVp_NOK|SVf_NOK |
11387 | |SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV; | |
f880fe2f | 11388 | SvPV_set(&PL_sv_yes, SAVEPVN(PL_Yes, 1)); |
b162af07 SP |
11389 | SvCUR_set(&PL_sv_yes, 1); |
11390 | SvLEN_set(&PL_sv_yes, 2); | |
45977657 | 11391 | SvIV_set(&PL_sv_yes, 1); |
9d6ce603 | 11392 | SvNV_set(&PL_sv_yes, 1); |
1d7c1841 GS |
11393 | ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes); |
11394 | ||
05ec9bb3 | 11395 | /* create (a non-shared!) shared string table */ |
1d7c1841 GS |
11396 | PL_strtab = newHV(); |
11397 | HvSHAREKEYS_off(PL_strtab); | |
c4a9c09d | 11398 | hv_ksplit(PL_strtab, HvTOTALKEYS(proto_perl->Istrtab)); |
1d7c1841 GS |
11399 | ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab); |
11400 | ||
05ec9bb3 NIS |
11401 | PL_compiling = proto_perl->Icompiling; |
11402 | ||
11403 | /* These two PVs will be free'd special way so must set them same way op.c does */ | |
11404 | PL_compiling.cop_stashpv = savesharedpv(PL_compiling.cop_stashpv); | |
11405 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_stashpv, PL_compiling.cop_stashpv); | |
11406 | ||
11407 | PL_compiling.cop_file = savesharedpv(PL_compiling.cop_file); | |
11408 | ptr_table_store(PL_ptr_table, proto_perl->Icompiling.cop_file, PL_compiling.cop_file); | |
11409 | ||
1d7c1841 GS |
11410 | ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling); |
11411 | if (!specialWARN(PL_compiling.cop_warnings)) | |
d2d73c3e | 11412 | PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings, param); |
ac27b0f5 | 11413 | if (!specialCopIO(PL_compiling.cop_io)) |
d2d73c3e | 11414 | PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io, param); |
1d7c1841 GS |
11415 | PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl); |
11416 | ||
11417 | /* pseudo environmental stuff */ | |
11418 | PL_origargc = proto_perl->Iorigargc; | |
e2975953 | 11419 | PL_origargv = proto_perl->Iorigargv; |
d2d73c3e | 11420 | |
d2d73c3e AB |
11421 | param->stashes = newAV(); /* Setup array of objects to call clone on */ |
11422 | ||
a1ea730d | 11423 | #ifdef PERLIO_LAYERS |
3a1ee7e8 NIS |
11424 | /* Clone PerlIO tables as soon as we can handle general xx_dup() */ |
11425 | PerlIO_clone(aTHX_ proto_perl, param); | |
a1ea730d | 11426 | #endif |
d2d73c3e AB |
11427 | |
11428 | PL_envgv = gv_dup(proto_perl->Ienvgv, param); | |
11429 | PL_incgv = gv_dup(proto_perl->Iincgv, param); | |
11430 | PL_hintgv = gv_dup(proto_perl->Ihintgv, param); | |
1d7c1841 | 11431 | PL_origfilename = SAVEPV(proto_perl->Iorigfilename); |
d2d73c3e AB |
11432 | PL_diehook = sv_dup_inc(proto_perl->Idiehook, param); |
11433 | PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook, param); | |
1d7c1841 GS |
11434 | |
11435 | /* switches */ | |
11436 | PL_minus_c = proto_perl->Iminus_c; | |
d2d73c3e | 11437 | PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel, param); |
1d7c1841 GS |
11438 | PL_localpatches = proto_perl->Ilocalpatches; |
11439 | PL_splitstr = proto_perl->Isplitstr; | |
11440 | PL_preprocess = proto_perl->Ipreprocess; | |
11441 | PL_minus_n = proto_perl->Iminus_n; | |
11442 | PL_minus_p = proto_perl->Iminus_p; | |
11443 | PL_minus_l = proto_perl->Iminus_l; | |
11444 | PL_minus_a = proto_perl->Iminus_a; | |
11445 | PL_minus_F = proto_perl->Iminus_F; | |
11446 | PL_doswitches = proto_perl->Idoswitches; | |
11447 | PL_dowarn = proto_perl->Idowarn; | |
11448 | PL_doextract = proto_perl->Idoextract; | |
11449 | PL_sawampersand = proto_perl->Isawampersand; | |
11450 | PL_unsafe = proto_perl->Iunsafe; | |
11451 | PL_inplace = SAVEPV(proto_perl->Iinplace); | |
d2d73c3e | 11452 | PL_e_script = sv_dup_inc(proto_perl->Ie_script, param); |
1d7c1841 GS |
11453 | PL_perldb = proto_perl->Iperldb; |
11454 | PL_perl_destruct_level = proto_perl->Iperl_destruct_level; | |
1cbb0781 | 11455 | PL_exit_flags = proto_perl->Iexit_flags; |
1d7c1841 GS |
11456 | |
11457 | /* magical thingies */ | |
11458 | /* XXX time(&PL_basetime) when asked for? */ | |
11459 | PL_basetime = proto_perl->Ibasetime; | |
d2d73c3e | 11460 | PL_formfeed = sv_dup(proto_perl->Iformfeed, param); |
1d7c1841 GS |
11461 | |
11462 | PL_maxsysfd = proto_perl->Imaxsysfd; | |
11463 | PL_multiline = proto_perl->Imultiline; | |
11464 | PL_statusvalue = proto_perl->Istatusvalue; | |
11465 | #ifdef VMS | |
11466 | PL_statusvalue_vms = proto_perl->Istatusvalue_vms; | |
11467 | #endif | |
0a378802 | 11468 | PL_encoding = sv_dup(proto_perl->Iencoding, param); |
1d7c1841 | 11469 | |
4a4c6fe3 | 11470 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
1f483ca1 JH |
11471 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
11472 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ | |
4a4c6fe3 | 11473 | |
d2f185dc AMS |
11474 | /* Clone the regex array */ |
11475 | PL_regex_padav = newAV(); | |
11476 | { | |
a3b680e6 | 11477 | const I32 len = av_len((AV*)proto_perl->Iregex_padav); |
53c1dcc0 | 11478 | SV** const regexen = AvARRAY((AV*)proto_perl->Iregex_padav); |
b464bac0 | 11479 | IV i; |
0f95fc41 AB |
11480 | av_push(PL_regex_padav, |
11481 | sv_dup_inc(regexen[0],param)); | |
11482 | for(i = 1; i <= len; i++) { | |
11483 | if(SvREPADTMP(regexen[i])) { | |
11484 | av_push(PL_regex_padav, sv_dup_inc(regexen[i], param)); | |
8cf8f3d1 | 11485 | } else { |
0f95fc41 AB |
11486 | av_push(PL_regex_padav, |
11487 | SvREFCNT_inc( | |
8cf8f3d1 | 11488 | newSViv(PTR2IV(re_dup(INT2PTR(REGEXP *, |
cbfa9890 | 11489 | SvIVX(regexen[i])), param))) |
0f95fc41 AB |
11490 | )); |
11491 | } | |
d2f185dc AMS |
11492 | } |
11493 | } | |
11494 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 11495 | |
1d7c1841 | 11496 | /* shortcuts to various I/O objects */ |
d2d73c3e AB |
11497 | PL_stdingv = gv_dup(proto_perl->Istdingv, param); |
11498 | PL_stderrgv = gv_dup(proto_perl->Istderrgv, param); | |
11499 | PL_defgv = gv_dup(proto_perl->Idefgv, param); | |
11500 | PL_argvgv = gv_dup(proto_perl->Iargvgv, param); | |
11501 | PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv, param); | |
11502 | PL_argvout_stack = av_dup_inc(proto_perl->Iargvout_stack, param); | |
1d7c1841 GS |
11503 | |
11504 | /* shortcuts to regexp stuff */ | |
d2d73c3e | 11505 | PL_replgv = gv_dup(proto_perl->Ireplgv, param); |
1d7c1841 GS |
11506 | |
11507 | /* shortcuts to misc objects */ | |
d2d73c3e | 11508 | PL_errgv = gv_dup(proto_perl->Ierrgv, param); |
1d7c1841 GS |
11509 | |
11510 | /* shortcuts to debugging objects */ | |
d2d73c3e AB |
11511 | PL_DBgv = gv_dup(proto_perl->IDBgv, param); |
11512 | PL_DBline = gv_dup(proto_perl->IDBline, param); | |
11513 | PL_DBsub = gv_dup(proto_perl->IDBsub, param); | |
11514 | PL_DBsingle = sv_dup(proto_perl->IDBsingle, param); | |
11515 | PL_DBtrace = sv_dup(proto_perl->IDBtrace, param); | |
11516 | PL_DBsignal = sv_dup(proto_perl->IDBsignal, param); | |
06492da6 | 11517 | PL_DBassertion = sv_dup(proto_perl->IDBassertion, param); |
d2d73c3e AB |
11518 | PL_lineary = av_dup(proto_perl->Ilineary, param); |
11519 | PL_dbargs = av_dup(proto_perl->Idbargs, param); | |
1d7c1841 GS |
11520 | |
11521 | /* symbol tables */ | |
d2d73c3e AB |
11522 | PL_defstash = hv_dup_inc(proto_perl->Tdefstash, param); |
11523 | PL_curstash = hv_dup(proto_perl->Tcurstash, param); | |
d2d73c3e AB |
11524 | PL_debstash = hv_dup(proto_perl->Idebstash, param); |
11525 | PL_globalstash = hv_dup(proto_perl->Iglobalstash, param); | |
11526 | PL_curstname = sv_dup_inc(proto_perl->Icurstname, param); | |
11527 | ||
11528 | PL_beginav = av_dup_inc(proto_perl->Ibeginav, param); | |
ee1c5a4e | 11529 | PL_beginav_save = av_dup_inc(proto_perl->Ibeginav_save, param); |
ece599bd | 11530 | PL_checkav_save = av_dup_inc(proto_perl->Icheckav_save, param); |
d2d73c3e AB |
11531 | PL_endav = av_dup_inc(proto_perl->Iendav, param); |
11532 | PL_checkav = av_dup_inc(proto_perl->Icheckav, param); | |
11533 | PL_initav = av_dup_inc(proto_perl->Iinitav, param); | |
1d7c1841 GS |
11534 | |
11535 | PL_sub_generation = proto_perl->Isub_generation; | |
11536 | ||
11537 | /* funky return mechanisms */ | |
11538 | PL_forkprocess = proto_perl->Iforkprocess; | |
11539 | ||
11540 | /* subprocess state */ | |
d2d73c3e | 11541 | PL_fdpid = av_dup_inc(proto_perl->Ifdpid, param); |
1d7c1841 GS |
11542 | |
11543 | /* internal state */ | |
11544 | PL_tainting = proto_perl->Itainting; | |
7135f00b | 11545 | PL_taint_warn = proto_perl->Itaint_warn; |
1d7c1841 GS |
11546 | PL_maxo = proto_perl->Imaxo; |
11547 | if (proto_perl->Iop_mask) | |
11548 | PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo); | |
11549 | else | |
11550 | PL_op_mask = Nullch; | |
06492da6 | 11551 | /* PL_asserting = proto_perl->Iasserting; */ |
1d7c1841 GS |
11552 | |
11553 | /* current interpreter roots */ | |
d2d73c3e | 11554 | PL_main_cv = cv_dup_inc(proto_perl->Imain_cv, param); |
1d7c1841 GS |
11555 | PL_main_root = OpREFCNT_inc(proto_perl->Imain_root); |
11556 | PL_main_start = proto_perl->Imain_start; | |
e977893f | 11557 | PL_eval_root = proto_perl->Ieval_root; |
1d7c1841 GS |
11558 | PL_eval_start = proto_perl->Ieval_start; |
11559 | ||
11560 | /* runtime control stuff */ | |
11561 | PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl); | |
11562 | PL_copline = proto_perl->Icopline; | |
11563 | ||
11564 | PL_filemode = proto_perl->Ifilemode; | |
11565 | PL_lastfd = proto_perl->Ilastfd; | |
11566 | PL_oldname = proto_perl->Ioldname; /* XXX not quite right */ | |
11567 | PL_Argv = NULL; | |
11568 | PL_Cmd = Nullch; | |
11569 | PL_gensym = proto_perl->Igensym; | |
11570 | PL_preambled = proto_perl->Ipreambled; | |
d2d73c3e | 11571 | PL_preambleav = av_dup_inc(proto_perl->Ipreambleav, param); |
1d7c1841 GS |
11572 | PL_laststatval = proto_perl->Ilaststatval; |
11573 | PL_laststype = proto_perl->Ilaststype; | |
11574 | PL_mess_sv = Nullsv; | |
11575 | ||
d2d73c3e | 11576 | PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv, param); |
1d7c1841 GS |
11577 | |
11578 | /* interpreter atexit processing */ | |
11579 | PL_exitlistlen = proto_perl->Iexitlistlen; | |
11580 | if (PL_exitlistlen) { | |
11581 | New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11582 | Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry); | |
11583 | } | |
11584 | else | |
11585 | PL_exitlist = (PerlExitListEntry*)NULL; | |
d2d73c3e | 11586 | PL_modglobal = hv_dup_inc(proto_perl->Imodglobal, param); |
19e8ce8e AB |
11587 | PL_custom_op_names = hv_dup_inc(proto_perl->Icustom_op_names,param); |
11588 | PL_custom_op_descs = hv_dup_inc(proto_perl->Icustom_op_descs,param); | |
1d7c1841 GS |
11589 | |
11590 | PL_profiledata = NULL; | |
a8fc9800 | 11591 | PL_rsfp = fp_dup(proto_perl->Irsfp, '<', param); |
1d7c1841 | 11592 | /* PL_rsfp_filters entries have fake IoDIRP() */ |
d2d73c3e | 11593 | PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters, param); |
1d7c1841 | 11594 | |
d2d73c3e | 11595 | PL_compcv = cv_dup(proto_perl->Icompcv, param); |
dd2155a4 DM |
11596 | |
11597 | PAD_CLONE_VARS(proto_perl, param); | |
1d7c1841 GS |
11598 | |
11599 | #ifdef HAVE_INTERP_INTERN | |
11600 | sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern); | |
11601 | #endif | |
11602 | ||
11603 | /* more statics moved here */ | |
11604 | PL_generation = proto_perl->Igeneration; | |
d2d73c3e | 11605 | PL_DBcv = cv_dup(proto_perl->IDBcv, param); |
1d7c1841 GS |
11606 | |
11607 | PL_in_clean_objs = proto_perl->Iin_clean_objs; | |
11608 | PL_in_clean_all = proto_perl->Iin_clean_all; | |
11609 | ||
11610 | PL_uid = proto_perl->Iuid; | |
11611 | PL_euid = proto_perl->Ieuid; | |
11612 | PL_gid = proto_perl->Igid; | |
11613 | PL_egid = proto_perl->Iegid; | |
11614 | PL_nomemok = proto_perl->Inomemok; | |
11615 | PL_an = proto_perl->Ian; | |
1d7c1841 GS |
11616 | PL_evalseq = proto_perl->Ievalseq; |
11617 | PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */ | |
11618 | PL_origalen = proto_perl->Iorigalen; | |
11619 | PL_pidstatus = newHV(); /* XXX flag for cloning? */ | |
11620 | PL_osname = SAVEPV(proto_perl->Iosname); | |
5c728af0 | 11621 | PL_sh_path_compat = proto_perl->Ish_path_compat; /* XXX never deallocated */ |
1d7c1841 GS |
11622 | PL_sighandlerp = proto_perl->Isighandlerp; |
11623 | ||
11624 | ||
11625 | PL_runops = proto_perl->Irunops; | |
11626 | ||
11627 | Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char); | |
11628 | ||
11629 | #ifdef CSH | |
11630 | PL_cshlen = proto_perl->Icshlen; | |
74f1b2b8 | 11631 | PL_cshname = proto_perl->Icshname; /* XXX never deallocated */ |
1d7c1841 GS |
11632 | #endif |
11633 | ||
11634 | PL_lex_state = proto_perl->Ilex_state; | |
11635 | PL_lex_defer = proto_perl->Ilex_defer; | |
11636 | PL_lex_expect = proto_perl->Ilex_expect; | |
11637 | PL_lex_formbrack = proto_perl->Ilex_formbrack; | |
11638 | PL_lex_dojoin = proto_perl->Ilex_dojoin; | |
11639 | PL_lex_starts = proto_perl->Ilex_starts; | |
d2d73c3e AB |
11640 | PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff, param); |
11641 | PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl, param); | |
1d7c1841 GS |
11642 | PL_lex_op = proto_perl->Ilex_op; |
11643 | PL_lex_inpat = proto_perl->Ilex_inpat; | |
11644 | PL_lex_inwhat = proto_perl->Ilex_inwhat; | |
11645 | PL_lex_brackets = proto_perl->Ilex_brackets; | |
11646 | i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets); | |
11647 | PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i); | |
11648 | PL_lex_casemods = proto_perl->Ilex_casemods; | |
11649 | i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods); | |
11650 | PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i); | |
11651 | ||
11652 | Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE); | |
11653 | Copy(proto_perl->Inexttype, PL_nexttype, 5, I32); | |
11654 | PL_nexttoke = proto_perl->Inexttoke; | |
11655 | ||
1d773130 TB |
11656 | /* XXX This is probably masking the deeper issue of why |
11657 | * SvANY(proto_perl->Ilinestr) can be NULL at this point. For test case: | |
11658 | * http://archive.develooper.com/perl5-porters%40perl.org/msg83298.html | |
11659 | * (A little debugging with a watchpoint on it may help.) | |
11660 | */ | |
389edf32 TB |
11661 | if (SvANY(proto_perl->Ilinestr)) { |
11662 | PL_linestr = sv_dup_inc(proto_perl->Ilinestr, param); | |
3f7c398e | 11663 | i = proto_perl->Ibufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11664 | PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11665 | i = proto_perl->Ioldbufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11666 | PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11667 | i = proto_perl->Ioldoldbufptr - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11668 | PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11669 | i = proto_perl->Ilinestart - SvPVX_const(proto_perl->Ilinestr); |
389edf32 TB |
11670 | PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
11671 | } | |
11672 | else { | |
11673 | PL_linestr = NEWSV(65,79); | |
11674 | sv_upgrade(PL_linestr,SVt_PVIV); | |
11675 | sv_setpvn(PL_linestr,"",0); | |
11676 | PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
11677 | } | |
1d7c1841 | 11678 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1d7c1841 GS |
11679 | PL_pending_ident = proto_perl->Ipending_ident; |
11680 | PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */ | |
11681 | ||
11682 | PL_expect = proto_perl->Iexpect; | |
11683 | ||
11684 | PL_multi_start = proto_perl->Imulti_start; | |
11685 | PL_multi_end = proto_perl->Imulti_end; | |
11686 | PL_multi_open = proto_perl->Imulti_open; | |
11687 | PL_multi_close = proto_perl->Imulti_close; | |
11688 | ||
11689 | PL_error_count = proto_perl->Ierror_count; | |
11690 | PL_subline = proto_perl->Isubline; | |
d2d73c3e | 11691 | PL_subname = sv_dup_inc(proto_perl->Isubname, param); |
1d7c1841 | 11692 | |
1d773130 | 11693 | /* XXX See comment on SvANY(proto_perl->Ilinestr) above */ |
389edf32 | 11694 | if (SvANY(proto_perl->Ilinestr)) { |
3f7c398e | 11695 | i = proto_perl->Ilast_uni - SvPVX_const(proto_perl->Ilinestr); |
389edf32 | 11696 | PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
3f7c398e | 11697 | i = proto_perl->Ilast_lop - SvPVX_const(proto_perl->Ilinestr); |
389edf32 TB |
11698 | PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i); |
11699 | PL_last_lop_op = proto_perl->Ilast_lop_op; | |
11700 | } | |
11701 | else { | |
11702 | PL_last_uni = SvPVX(PL_linestr); | |
11703 | PL_last_lop = SvPVX(PL_linestr); | |
11704 | PL_last_lop_op = 0; | |
11705 | } | |
1d7c1841 | 11706 | PL_in_my = proto_perl->Iin_my; |
d2d73c3e | 11707 | PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash, param); |
1d7c1841 GS |
11708 | #ifdef FCRYPT |
11709 | PL_cryptseen = proto_perl->Icryptseen; | |
11710 | #endif | |
11711 | ||
11712 | PL_hints = proto_perl->Ihints; | |
11713 | ||
11714 | PL_amagic_generation = proto_perl->Iamagic_generation; | |
11715 | ||
11716 | #ifdef USE_LOCALE_COLLATE | |
11717 | PL_collation_ix = proto_perl->Icollation_ix; | |
11718 | PL_collation_name = SAVEPV(proto_perl->Icollation_name); | |
11719 | PL_collation_standard = proto_perl->Icollation_standard; | |
11720 | PL_collxfrm_base = proto_perl->Icollxfrm_base; | |
11721 | PL_collxfrm_mult = proto_perl->Icollxfrm_mult; | |
11722 | #endif /* USE_LOCALE_COLLATE */ | |
11723 | ||
11724 | #ifdef USE_LOCALE_NUMERIC | |
11725 | PL_numeric_name = SAVEPV(proto_perl->Inumeric_name); | |
11726 | PL_numeric_standard = proto_perl->Inumeric_standard; | |
11727 | PL_numeric_local = proto_perl->Inumeric_local; | |
d2d73c3e | 11728 | PL_numeric_radix_sv = sv_dup_inc(proto_perl->Inumeric_radix_sv, param); |
1d7c1841 GS |
11729 | #endif /* !USE_LOCALE_NUMERIC */ |
11730 | ||
11731 | /* utf8 character classes */ | |
d2d73c3e AB |
11732 | PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum, param); |
11733 | PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc, param); | |
11734 | PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii, param); | |
11735 | PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha, param); | |
11736 | PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space, param); | |
11737 | PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl, param); | |
11738 | PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph, param); | |
11739 | PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit, param); | |
11740 | PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper, param); | |
11741 | PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower, param); | |
11742 | PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print, param); | |
11743 | PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct, param); | |
11744 | PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit, param); | |
11745 | PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark, param); | |
11746 | PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper, param); | |
11747 | PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle, param); | |
11748 | PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower, param); | |
b4e400f9 | 11749 | PL_utf8_tofold = sv_dup_inc(proto_perl->Iutf8_tofold, param); |
82686b01 JH |
11750 | PL_utf8_idstart = sv_dup_inc(proto_perl->Iutf8_idstart, param); |
11751 | PL_utf8_idcont = sv_dup_inc(proto_perl->Iutf8_idcont, param); | |
1d7c1841 | 11752 | |
6c3182a5 | 11753 | /* Did the locale setup indicate UTF-8? */ |
9769094f | 11754 | PL_utf8locale = proto_perl->Iutf8locale; |
6c3182a5 JH |
11755 | /* Unicode features (see perlrun/-C) */ |
11756 | PL_unicode = proto_perl->Iunicode; | |
11757 | ||
11758 | /* Pre-5.8 signals control */ | |
11759 | PL_signals = proto_perl->Isignals; | |
11760 | ||
11761 | /* times() ticks per second */ | |
11762 | PL_clocktick = proto_perl->Iclocktick; | |
11763 | ||
11764 | /* Recursion stopper for PerlIO_find_layer */ | |
11765 | PL_in_load_module = proto_perl->Iin_load_module; | |
11766 | ||
11767 | /* sort() routine */ | |
11768 | PL_sort_RealCmp = proto_perl->Isort_RealCmp; | |
11769 | ||
57c6e6d2 JH |
11770 | /* Not really needed/useful since the reenrant_retint is "volatile", |
11771 | * but do it for consistency's sake. */ | |
11772 | PL_reentrant_retint = proto_perl->Ireentrant_retint; | |
11773 | ||
15a5279a JH |
11774 | /* Hooks to shared SVs and locks. */ |
11775 | PL_sharehook = proto_perl->Isharehook; | |
11776 | PL_lockhook = proto_perl->Ilockhook; | |
11777 | PL_unlockhook = proto_perl->Iunlockhook; | |
11778 | PL_threadhook = proto_perl->Ithreadhook; | |
11779 | ||
bce260cd JH |
11780 | PL_runops_std = proto_perl->Irunops_std; |
11781 | PL_runops_dbg = proto_perl->Irunops_dbg; | |
11782 | ||
11783 | #ifdef THREADS_HAVE_PIDS | |
11784 | PL_ppid = proto_perl->Ippid; | |
11785 | #endif | |
11786 | ||
1d7c1841 GS |
11787 | /* swatch cache */ |
11788 | PL_last_swash_hv = Nullhv; /* reinits on demand */ | |
11789 | PL_last_swash_klen = 0; | |
11790 | PL_last_swash_key[0]= '\0'; | |
11791 | PL_last_swash_tmps = (U8*)NULL; | |
11792 | PL_last_swash_slen = 0; | |
11793 | ||
1d7c1841 GS |
11794 | PL_glob_index = proto_perl->Iglob_index; |
11795 | PL_srand_called = proto_perl->Isrand_called; | |
11796 | PL_uudmap['M'] = 0; /* reinits on demand */ | |
11797 | PL_bitcount = Nullch; /* reinits on demand */ | |
11798 | ||
66fe0623 NIS |
11799 | if (proto_perl->Ipsig_pend) { |
11800 | Newz(0, PL_psig_pend, SIG_SIZE, int); | |
9dd79c3f | 11801 | } |
66fe0623 NIS |
11802 | else { |
11803 | PL_psig_pend = (int*)NULL; | |
11804 | } | |
11805 | ||
1d7c1841 | 11806 | if (proto_perl->Ipsig_ptr) { |
76d3c696 JH |
11807 | Newz(0, PL_psig_ptr, SIG_SIZE, SV*); |
11808 | Newz(0, PL_psig_name, SIG_SIZE, SV*); | |
76d3c696 | 11809 | for (i = 1; i < SIG_SIZE; i++) { |
d2d73c3e AB |
11810 | PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i], param); |
11811 | PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i], param); | |
1d7c1841 GS |
11812 | } |
11813 | } | |
11814 | else { | |
11815 | PL_psig_ptr = (SV**)NULL; | |
11816 | PL_psig_name = (SV**)NULL; | |
11817 | } | |
11818 | ||
11819 | /* thrdvar.h stuff */ | |
11820 | ||
a0739874 | 11821 | if (flags & CLONEf_COPY_STACKS) { |
1d7c1841 GS |
11822 | /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */ |
11823 | PL_tmps_ix = proto_perl->Ttmps_ix; | |
11824 | PL_tmps_max = proto_perl->Ttmps_max; | |
11825 | PL_tmps_floor = proto_perl->Ttmps_floor; | |
11826 | Newz(50, PL_tmps_stack, PL_tmps_max, SV*); | |
11827 | i = 0; | |
11828 | while (i <= PL_tmps_ix) { | |
d2d73c3e | 11829 | PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i], param); |
1d7c1841 GS |
11830 | ++i; |
11831 | } | |
11832 | ||
11833 | /* next PUSHMARK() sets *(PL_markstack_ptr+1) */ | |
11834 | i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack; | |
11835 | Newz(54, PL_markstack, i, I32); | |
11836 | PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max | |
11837 | - proto_perl->Tmarkstack); | |
11838 | PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr | |
11839 | - proto_perl->Tmarkstack); | |
11840 | Copy(proto_perl->Tmarkstack, PL_markstack, | |
11841 | PL_markstack_ptr - PL_markstack + 1, I32); | |
11842 | ||
11843 | /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix] | |
11844 | * NOTE: unlike the others! */ | |
11845 | PL_scopestack_ix = proto_perl->Tscopestack_ix; | |
11846 | PL_scopestack_max = proto_perl->Tscopestack_max; | |
11847 | Newz(54, PL_scopestack, PL_scopestack_max, I32); | |
11848 | Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32); | |
11849 | ||
1d7c1841 | 11850 | /* NOTE: si_dup() looks at PL_markstack */ |
d2d73c3e | 11851 | PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo, param); |
1d7c1841 GS |
11852 | |
11853 | /* PL_curstack = PL_curstackinfo->si_stack; */ | |
d2d73c3e AB |
11854 | PL_curstack = av_dup(proto_perl->Tcurstack, param); |
11855 | PL_mainstack = av_dup(proto_perl->Tmainstack, param); | |
1d7c1841 GS |
11856 | |
11857 | /* next PUSHs() etc. set *(PL_stack_sp+1) */ | |
11858 | PL_stack_base = AvARRAY(PL_curstack); | |
11859 | PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp | |
11860 | - proto_perl->Tstack_base); | |
11861 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); | |
11862 | ||
11863 | /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix] | |
11864 | * NOTE: unlike the others! */ | |
11865 | PL_savestack_ix = proto_perl->Tsavestack_ix; | |
11866 | PL_savestack_max = proto_perl->Tsavestack_max; | |
11867 | /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/ | |
d2d73c3e | 11868 | PL_savestack = ss_dup(proto_perl, param); |
1d7c1841 GS |
11869 | } |
11870 | else { | |
11871 | init_stacks(); | |
985e7056 | 11872 | ENTER; /* perl_destruct() wants to LEAVE; */ |
1d7c1841 GS |
11873 | } |
11874 | ||
11875 | PL_start_env = proto_perl->Tstart_env; /* XXXXXX */ | |
11876 | PL_top_env = &PL_start_env; | |
11877 | ||
11878 | PL_op = proto_perl->Top; | |
11879 | ||
11880 | PL_Sv = Nullsv; | |
11881 | PL_Xpv = (XPV*)NULL; | |
11882 | PL_na = proto_perl->Tna; | |
11883 | ||
11884 | PL_statbuf = proto_perl->Tstatbuf; | |
11885 | PL_statcache = proto_perl->Tstatcache; | |
d2d73c3e AB |
11886 | PL_statgv = gv_dup(proto_perl->Tstatgv, param); |
11887 | PL_statname = sv_dup_inc(proto_perl->Tstatname, param); | |
1d7c1841 GS |
11888 | #ifdef HAS_TIMES |
11889 | PL_timesbuf = proto_perl->Ttimesbuf; | |
11890 | #endif | |
11891 | ||
11892 | PL_tainted = proto_perl->Ttainted; | |
11893 | PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */ | |
d2d73c3e AB |
11894 | PL_rs = sv_dup_inc(proto_perl->Trs, param); |
11895 | PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv, param); | |
11896 | PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv, param); | |
11897 | PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv, param); | |
1d7c1841 | 11898 | PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */ |
d2d73c3e AB |
11899 | PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget, param); |
11900 | PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget, param); | |
11901 | PL_formtarget = sv_dup(proto_perl->Tformtarget, param); | |
1d7c1841 GS |
11902 | |
11903 | PL_restartop = proto_perl->Trestartop; | |
11904 | PL_in_eval = proto_perl->Tin_eval; | |
11905 | PL_delaymagic = proto_perl->Tdelaymagic; | |
11906 | PL_dirty = proto_perl->Tdirty; | |
11907 | PL_localizing = proto_perl->Tlocalizing; | |
11908 | ||
d2d73c3e | 11909 | PL_errors = sv_dup_inc(proto_perl->Terrors, param); |
dd28f7bb | 11910 | PL_hv_fetch_ent_mh = Nullhe; |
1d7c1841 GS |
11911 | PL_modcount = proto_perl->Tmodcount; |
11912 | PL_lastgotoprobe = Nullop; | |
11913 | PL_dumpindent = proto_perl->Tdumpindent; | |
11914 | ||
11915 | PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl); | |
d2d73c3e AB |
11916 | PL_sortstash = hv_dup(proto_perl->Tsortstash, param); |
11917 | PL_firstgv = gv_dup(proto_perl->Tfirstgv, param); | |
11918 | PL_secondgv = gv_dup(proto_perl->Tsecondgv, param); | |
1d7c1841 GS |
11919 | PL_sortcxix = proto_perl->Tsortcxix; |
11920 | PL_efloatbuf = Nullch; /* reinits on demand */ | |
11921 | PL_efloatsize = 0; /* reinits on demand */ | |
11922 | ||
11923 | /* regex stuff */ | |
11924 | ||
11925 | PL_screamfirst = NULL; | |
11926 | PL_screamnext = NULL; | |
11927 | PL_maxscream = -1; /* reinits on demand */ | |
11928 | PL_lastscream = Nullsv; | |
11929 | ||
11930 | PL_watchaddr = NULL; | |
11931 | PL_watchok = Nullch; | |
11932 | ||
11933 | PL_regdummy = proto_perl->Tregdummy; | |
1d7c1841 GS |
11934 | PL_regprecomp = Nullch; |
11935 | PL_regnpar = 0; | |
11936 | PL_regsize = 0; | |
1d7c1841 GS |
11937 | PL_colorset = 0; /* reinits PL_colors[] */ |
11938 | /*PL_colors[6] = {0,0,0,0,0,0};*/ | |
1d7c1841 GS |
11939 | PL_reginput = Nullch; |
11940 | PL_regbol = Nullch; | |
11941 | PL_regeol = Nullch; | |
11942 | PL_regstartp = (I32*)NULL; | |
11943 | PL_regendp = (I32*)NULL; | |
11944 | PL_reglastparen = (U32*)NULL; | |
2d862feb | 11945 | PL_reglastcloseparen = (U32*)NULL; |
1d7c1841 | 11946 | PL_regtill = Nullch; |
1d7c1841 GS |
11947 | PL_reg_start_tmp = (char**)NULL; |
11948 | PL_reg_start_tmpl = 0; | |
11949 | PL_regdata = (struct reg_data*)NULL; | |
11950 | PL_bostr = Nullch; | |
11951 | PL_reg_flags = 0; | |
11952 | PL_reg_eval_set = 0; | |
11953 | PL_regnarrate = 0; | |
11954 | PL_regprogram = (regnode*)NULL; | |
11955 | PL_regindent = 0; | |
11956 | PL_regcc = (CURCUR*)NULL; | |
11957 | PL_reg_call_cc = (struct re_cc_state*)NULL; | |
11958 | PL_reg_re = (regexp*)NULL; | |
11959 | PL_reg_ganch = Nullch; | |
11960 | PL_reg_sv = Nullsv; | |
53c4c00c | 11961 | PL_reg_match_utf8 = FALSE; |
1d7c1841 GS |
11962 | PL_reg_magic = (MAGIC*)NULL; |
11963 | PL_reg_oldpos = 0; | |
11964 | PL_reg_oldcurpm = (PMOP*)NULL; | |
11965 | PL_reg_curpm = (PMOP*)NULL; | |
11966 | PL_reg_oldsaved = Nullch; | |
11967 | PL_reg_oldsavedlen = 0; | |
f8c7b90f | 11968 | #ifdef PERL_OLD_COPY_ON_WRITE |
504cff3b | 11969 | PL_nrs = Nullsv; |
ed252734 | 11970 | #endif |
1d7c1841 GS |
11971 | PL_reg_maxiter = 0; |
11972 | PL_reg_leftiter = 0; | |
11973 | PL_reg_poscache = Nullch; | |
11974 | PL_reg_poscache_size= 0; | |
11975 | ||
11976 | /* RE engine - function pointers */ | |
11977 | PL_regcompp = proto_perl->Tregcompp; | |
11978 | PL_regexecp = proto_perl->Tregexecp; | |
11979 | PL_regint_start = proto_perl->Tregint_start; | |
11980 | PL_regint_string = proto_perl->Tregint_string; | |
11981 | PL_regfree = proto_perl->Tregfree; | |
11982 | ||
11983 | PL_reginterp_cnt = 0; | |
11984 | PL_reg_starttry = 0; | |
11985 | ||
a2efc822 SC |
11986 | /* Pluggable optimizer */ |
11987 | PL_peepp = proto_perl->Tpeepp; | |
11988 | ||
081fc587 AB |
11989 | PL_stashcache = newHV(); |
11990 | ||
a0739874 DM |
11991 | if (!(flags & CLONEf_KEEP_PTR_TABLE)) { |
11992 | ptr_table_free(PL_ptr_table); | |
11993 | PL_ptr_table = NULL; | |
11994 | } | |
8cf8f3d1 | 11995 | |
f284b03f AMS |
11996 | /* Call the ->CLONE method, if it exists, for each of the stashes |
11997 | identified by sv_dup() above. | |
11998 | */ | |
d2d73c3e | 11999 | while(av_len(param->stashes) != -1) { |
53c1dcc0 AL |
12000 | HV* const stash = (HV*) av_shift(param->stashes); |
12001 | GV* const cloner = gv_fetchmethod_autoload(stash, "CLONE", 0); | |
f284b03f AMS |
12002 | if (cloner && GvCV(cloner)) { |
12003 | dSP; | |
12004 | ENTER; | |
12005 | SAVETMPS; | |
12006 | PUSHMARK(SP); | |
84bda14a | 12007 | XPUSHs(sv_2mortal(newSVhek(HvNAME_HEK(stash)))); |
f284b03f AMS |
12008 | PUTBACK; |
12009 | call_sv((SV*)GvCV(cloner), G_DISCARD); | |
12010 | FREETMPS; | |
12011 | LEAVE; | |
12012 | } | |
4a09accc | 12013 | } |
a0739874 | 12014 | |
dc507217 | 12015 | SvREFCNT_dec(param->stashes); |
dc507217 | 12016 | |
6d26897e DM |
12017 | /* orphaned? eg threads->new inside BEGIN or use */ |
12018 | if (PL_compcv && ! SvREFCNT(PL_compcv)) { | |
a3b680e6 | 12019 | (void)SvREFCNT_inc(PL_compcv); |
6d26897e DM |
12020 | SAVEFREESV(PL_compcv); |
12021 | } | |
12022 | ||
1d7c1841 | 12023 | return my_perl; |
1d7c1841 GS |
12024 | } |
12025 | ||
1d7c1841 | 12026 | #endif /* USE_ITHREADS */ |
a0ae6670 | 12027 | |
9f4817db | 12028 | /* |
ccfc67b7 JH |
12029 | =head1 Unicode Support |
12030 | ||
9f4817db JH |
12031 | =for apidoc sv_recode_to_utf8 |
12032 | ||
5d170f3a JH |
12033 | The encoding is assumed to be an Encode object, on entry the PV |
12034 | of the sv is assumed to be octets in that encoding, and the sv | |
12035 | will be converted into Unicode (and UTF-8). | |
9f4817db | 12036 | |
5d170f3a JH |
12037 | If the sv already is UTF-8 (or if it is not POK), or if the encoding |
12038 | is not a reference, nothing is done to the sv. If the encoding is not | |
1768d7eb JH |
12039 | an C<Encode::XS> Encoding object, bad things will happen. |
12040 | (See F<lib/encoding.pm> and L<Encode>). | |
9f4817db | 12041 | |
5d170f3a | 12042 | The PV of the sv is returned. |
9f4817db | 12043 | |
5d170f3a JH |
12044 | =cut */ |
12045 | ||
12046 | char * | |
12047 | Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding) | |
12048 | { | |
27da23d5 | 12049 | dVAR; |
220e2d4e | 12050 | if (SvPOK(sv) && !SvUTF8(sv) && !IN_BYTES && SvROK(encoding)) { |
d0063567 DK |
12051 | SV *uni; |
12052 | STRLEN len; | |
93524f2b | 12053 | const char *s; |
d0063567 DK |
12054 | dSP; |
12055 | ENTER; | |
12056 | SAVETMPS; | |
220e2d4e | 12057 | save_re_context(); |
d0063567 DK |
12058 | PUSHMARK(sp); |
12059 | EXTEND(SP, 3); | |
12060 | XPUSHs(encoding); | |
12061 | XPUSHs(sv); | |
7a5fa8a2 | 12062 | /* |
f9893866 NIS |
12063 | NI-S 2002/07/09 |
12064 | Passing sv_yes is wrong - it needs to be or'ed set of constants | |
7a5fa8a2 | 12065 | for Encode::XS, while UTf-8 decode (currently) assumes a true value means |
f9893866 NIS |
12066 | remove converted chars from source. |
12067 | ||
12068 | Both will default the value - let them. | |
7a5fa8a2 | 12069 | |
d0063567 | 12070 | XPUSHs(&PL_sv_yes); |
f9893866 | 12071 | */ |
d0063567 DK |
12072 | PUTBACK; |
12073 | call_method("decode", G_SCALAR); | |
12074 | SPAGAIN; | |
12075 | uni = POPs; | |
12076 | PUTBACK; | |
93524f2b | 12077 | s = SvPV_const(uni, len); |
3f7c398e | 12078 | if (s != SvPVX_const(sv)) { |
d0063567 | 12079 | SvGROW(sv, len + 1); |
93524f2b | 12080 | Move(s, SvPVX(sv), len + 1, char); |
d0063567 | 12081 | SvCUR_set(sv, len); |
d0063567 DK |
12082 | } |
12083 | FREETMPS; | |
12084 | LEAVE; | |
d0063567 | 12085 | SvUTF8_on(sv); |
95899a2a | 12086 | return SvPVX(sv); |
f9893866 | 12087 | } |
95899a2a | 12088 | return SvPOKp(sv) ? SvPVX(sv) : NULL; |
9f4817db JH |
12089 | } |
12090 | ||
220e2d4e IH |
12091 | /* |
12092 | =for apidoc sv_cat_decode | |
12093 | ||
12094 | The encoding is assumed to be an Encode object, the PV of the ssv is | |
12095 | assumed to be octets in that encoding and decoding the input starts | |
12096 | from the position which (PV + *offset) pointed to. The dsv will be | |
12097 | concatenated the decoded UTF-8 string from ssv. Decoding will terminate | |
12098 | when the string tstr appears in decoding output or the input ends on | |
12099 | the PV of the ssv. The value which the offset points will be modified | |
12100 | to the last input position on the ssv. | |
68795e93 | 12101 | |
220e2d4e IH |
12102 | Returns TRUE if the terminator was found, else returns FALSE. |
12103 | ||
12104 | =cut */ | |
12105 | ||
12106 | bool | |
12107 | Perl_sv_cat_decode(pTHX_ SV *dsv, SV *encoding, | |
12108 | SV *ssv, int *offset, char *tstr, int tlen) | |
12109 | { | |
27da23d5 | 12110 | dVAR; |
a73e8557 | 12111 | bool ret = FALSE; |
220e2d4e | 12112 | if (SvPOK(ssv) && SvPOK(dsv) && SvROK(encoding) && offset) { |
220e2d4e IH |
12113 | SV *offsv; |
12114 | dSP; | |
12115 | ENTER; | |
12116 | SAVETMPS; | |
12117 | save_re_context(); | |
12118 | PUSHMARK(sp); | |
12119 | EXTEND(SP, 6); | |
12120 | XPUSHs(encoding); | |
12121 | XPUSHs(dsv); | |
12122 | XPUSHs(ssv); | |
12123 | XPUSHs(offsv = sv_2mortal(newSViv(*offset))); | |
12124 | XPUSHs(sv_2mortal(newSVpvn(tstr, tlen))); | |
12125 | PUTBACK; | |
12126 | call_method("cat_decode", G_SCALAR); | |
12127 | SPAGAIN; | |
12128 | ret = SvTRUE(TOPs); | |
12129 | *offset = SvIV(offsv); | |
12130 | PUTBACK; | |
12131 | FREETMPS; | |
12132 | LEAVE; | |
220e2d4e | 12133 | } |
a73e8557 JH |
12134 | else |
12135 | Perl_croak(aTHX_ "Invalid argument to sv_cat_decode"); | |
12136 | return ret; | |
220e2d4e | 12137 | } |
f9893866 | 12138 | |
241d1a3b NC |
12139 | /* |
12140 | * Local variables: | |
12141 | * c-indentation-style: bsd | |
12142 | * c-basic-offset: 4 | |
12143 | * indent-tabs-mode: t | |
12144 | * End: | |
12145 | * | |
37442d52 RGS |
12146 | * ex: set ts=8 sts=4 sw=4 noet: |
12147 | */ |