Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* av.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
1d325971 | 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 LW |
9 | */ |
10 | ||
11 | /* | |
12 | * "...for the Entwives desired order, and plenty, and peace (by which they | |
13 | * meant that things should remain where they had set them)." --Treebeard | |
79072805 LW |
14 | */ |
15 | ||
ccfc67b7 JH |
16 | /* |
17 | =head1 Array Manipulation Functions | |
18 | */ | |
19 | ||
79072805 | 20 | #include "EXTERN.h" |
864dbfa3 | 21 | #define PERL_IN_AV_C |
79072805 LW |
22 | #include "perl.h" |
23 | ||
fb73857a | 24 | void |
864dbfa3 | 25 | Perl_av_reify(pTHX_ AV *av) |
a0d0e21e LW |
26 | { |
27 | I32 key; | |
fb73857a | 28 | |
3c78fafa GS |
29 | if (AvREAL(av)) |
30 | return; | |
93965878 | 31 | #ifdef DEBUGGING |
14befaf4 | 32 | if (SvTIED_mg((SV*)av, PERL_MAGIC_tied) && ckWARN_d(WARN_DEBUGGING)) |
9014280d | 33 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), "av_reify called on tied array"); |
93965878 | 34 | #endif |
a0d0e21e | 35 | key = AvMAX(av) + 1; |
93965878 | 36 | while (key > AvFILLp(av) + 1) |
3280af22 | 37 | AvARRAY(av)[--key] = &PL_sv_undef; |
a0d0e21e | 38 | while (key) { |
4373e329 | 39 | SV * const sv = AvARRAY(av)[--key]; |
a0d0e21e | 40 | assert(sv); |
411caa50 | 41 | if (sv != &PL_sv_undef) |
a0d0e21e LW |
42 | (void)SvREFCNT_inc(sv); |
43 | } | |
29de640a CS |
44 | key = AvARRAY(av) - AvALLOC(av); |
45 | while (key) | |
3280af22 | 46 | AvALLOC(av)[--key] = &PL_sv_undef; |
62b1ebc2 | 47 | AvREIFY_off(av); |
a0d0e21e LW |
48 | AvREAL_on(av); |
49 | } | |
50 | ||
cb50131a CB |
51 | /* |
52 | =for apidoc av_extend | |
53 | ||
54 | Pre-extend an array. The C<key> is the index to which the array should be | |
55 | extended. | |
56 | ||
57 | =cut | |
58 | */ | |
59 | ||
a0d0e21e | 60 | void |
864dbfa3 | 61 | Perl_av_extend(pTHX_ AV *av, I32 key) |
a0d0e21e | 62 | { |
823a54a3 AL |
63 | MAGIC * const mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied); |
64 | if (mg) { | |
93965878 NIS |
65 | dSP; |
66 | ENTER; | |
67 | SAVETMPS; | |
e788e7d3 | 68 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
69 | PUSHMARK(SP); |
70 | EXTEND(SP,2); | |
33c27489 | 71 | PUSHs(SvTIED_obj((SV*)av, mg)); |
a60c0954 | 72 | PUSHs(sv_2mortal(newSViv(key+1))); |
93965878 | 73 | PUTBACK; |
864dbfa3 | 74 | call_method("EXTEND", G_SCALAR|G_DISCARD); |
d3acc0f7 | 75 | POPSTACK; |
93965878 NIS |
76 | FREETMPS; |
77 | LEAVE; | |
78 | return; | |
79 | } | |
a0d0e21e LW |
80 | if (key > AvMAX(av)) { |
81 | SV** ary; | |
82 | I32 tmp; | |
83 | I32 newmax; | |
84 | ||
85 | if (AvALLOC(av) != AvARRAY(av)) { | |
93965878 | 86 | ary = AvALLOC(av) + AvFILLp(av) + 1; |
a0d0e21e | 87 | tmp = AvARRAY(av) - AvALLOC(av); |
93965878 | 88 | Move(AvARRAY(av), AvALLOC(av), AvFILLp(av)+1, SV*); |
a0d0e21e | 89 | AvMAX(av) += tmp; |
f880fe2f | 90 | SvPV_set(av, (char*)AvALLOC(av)); |
a0d0e21e LW |
91 | if (AvREAL(av)) { |
92 | while (tmp) | |
3280af22 | 93 | ary[--tmp] = &PL_sv_undef; |
a0d0e21e | 94 | } |
a0d0e21e LW |
95 | if (key > AvMAX(av) - 10) { |
96 | newmax = key + AvMAX(av); | |
97 | goto resize; | |
98 | } | |
99 | } | |
100 | else { | |
2b573ace JH |
101 | #ifdef PERL_MALLOC_WRAP |
102 | static const char oom_array_extend[] = | |
103 | "Out of memory during array extend"; /* Duplicated in pp_hot.c */ | |
104 | #endif | |
105 | ||
a0d0e21e | 106 | if (AvALLOC(av)) { |
516a5887 | 107 | #if !defined(STRANGE_MALLOC) && !defined(MYMALLOC) |
c1f7b11a SB |
108 | MEM_SIZE bytes; |
109 | IV itmp; | |
c07a80fd | 110 | #endif |
4633a7c4 | 111 | |
7bab3ede | 112 | #ifdef MYMALLOC |
8d6dde3e IZ |
113 | newmax = malloced_size((void*)AvALLOC(av))/sizeof(SV*) - 1; |
114 | ||
115 | if (key <= newmax) | |
116 | goto resized; | |
117 | #endif | |
a0d0e21e LW |
118 | newmax = key + AvMAX(av) / 5; |
119 | resize: | |
2b573ace | 120 | MEM_WRAP_CHECK_1(newmax+1, SV*, oom_array_extend); |
8d6dde3e | 121 | #if defined(STRANGE_MALLOC) || defined(MYMALLOC) |
a0d0e21e | 122 | Renew(AvALLOC(av),newmax+1, SV*); |
4633a7c4 LW |
123 | #else |
124 | bytes = (newmax + 1) * sizeof(SV*); | |
125 | #define MALLOC_OVERHEAD 16 | |
c1f7b11a | 126 | itmp = MALLOC_OVERHEAD; |
eb160463 | 127 | while ((MEM_SIZE)(itmp - MALLOC_OVERHEAD) < bytes) |
c1f7b11a SB |
128 | itmp += itmp; |
129 | itmp -= MALLOC_OVERHEAD; | |
130 | itmp /= sizeof(SV*); | |
131 | assert(itmp > newmax); | |
132 | newmax = itmp - 1; | |
133 | assert(newmax >= AvMAX(av)); | |
a02a5408 | 134 | Newx(ary, newmax+1, SV*); |
4633a7c4 | 135 | Copy(AvALLOC(av), ary, AvMAX(av)+1, SV*); |
fba3b22e MB |
136 | if (AvMAX(av) > 64) |
137 | offer_nice_chunk(AvALLOC(av), (AvMAX(av)+1) * sizeof(SV*)); | |
4633a7c4 LW |
138 | else |
139 | Safefree(AvALLOC(av)); | |
140 | AvALLOC(av) = ary; | |
141 | #endif | |
7bab3ede | 142 | #ifdef MYMALLOC |
8d6dde3e | 143 | resized: |
9c5ffd7c | 144 | #endif |
a0d0e21e LW |
145 | ary = AvALLOC(av) + AvMAX(av) + 1; |
146 | tmp = newmax - AvMAX(av); | |
3280af22 NIS |
147 | if (av == PL_curstack) { /* Oops, grew stack (via av_store()?) */ |
148 | PL_stack_sp = AvALLOC(av) + (PL_stack_sp - PL_stack_base); | |
149 | PL_stack_base = AvALLOC(av); | |
150 | PL_stack_max = PL_stack_base + newmax; | |
a0d0e21e LW |
151 | } |
152 | } | |
153 | else { | |
8d6dde3e | 154 | newmax = key < 3 ? 3 : key; |
2b573ace | 155 | MEM_WRAP_CHECK_1(newmax+1, SV*, oom_array_extend); |
a02a5408 | 156 | Newx(AvALLOC(av), newmax+1, SV*); |
a0d0e21e LW |
157 | ary = AvALLOC(av) + 1; |
158 | tmp = newmax; | |
3280af22 | 159 | AvALLOC(av)[0] = &PL_sv_undef; /* For the stacks */ |
a0d0e21e LW |
160 | } |
161 | if (AvREAL(av)) { | |
162 | while (tmp) | |
3280af22 | 163 | ary[--tmp] = &PL_sv_undef; |
a0d0e21e LW |
164 | } |
165 | ||
f880fe2f | 166 | SvPV_set(av, (char*)AvALLOC(av)); |
a0d0e21e LW |
167 | AvMAX(av) = newmax; |
168 | } | |
169 | } | |
170 | } | |
171 | ||
cb50131a CB |
172 | /* |
173 | =for apidoc av_fetch | |
174 | ||
175 | Returns the SV at the specified index in the array. The C<key> is the | |
176 | index. If C<lval> is set then the fetch will be part of a store. Check | |
177 | that the return value is non-null before dereferencing it to a C<SV*>. | |
178 | ||
179 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for | |
180 | more information on how to use this function on tied arrays. | |
181 | ||
182 | =cut | |
183 | */ | |
184 | ||
79072805 | 185 | SV** |
864dbfa3 | 186 | Perl_av_fetch(pTHX_ register AV *av, I32 key, I32 lval) |
79072805 LW |
187 | { |
188 | SV *sv; | |
189 | ||
a0d0e21e LW |
190 | if (!av) |
191 | return 0; | |
192 | ||
6f12eb6d | 193 | if (SvRMAGICAL(av)) { |
35a4481c | 194 | const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied); |
6f12eb6d MJD |
195 | if (tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata)) { |
196 | U32 adjust_index = 1; | |
197 | ||
198 | if (tied_magic && key < 0) { | |
199 | /* Handle negative array indices 20020222 MJD */ | |
823a54a3 | 200 | SV * const * const negative_indices_glob = |
6f12eb6d MJD |
201 | hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av, |
202 | tied_magic))), | |
203 | NEGATIVE_INDICES_VAR, 16, 0); | |
204 | ||
205 | if (negative_indices_glob | |
206 | && SvTRUE(GvSV(*negative_indices_glob))) | |
207 | adjust_index = 0; | |
208 | } | |
209 | ||
210 | if (key < 0 && adjust_index) { | |
211 | key += AvFILL(av) + 1; | |
212 | if (key < 0) | |
213 | return 0; | |
214 | } | |
215 | ||
216 | sv = sv_newmortal(); | |
dd28f7bb DM |
217 | sv_upgrade(sv, SVt_PVLV); |
218 | mg_copy((SV*)av, sv, 0, key); | |
219 | LvTYPE(sv) = 't'; | |
220 | LvTARG(sv) = sv; /* fake (SV**) */ | |
221 | return &(LvTARG(sv)); | |
6f12eb6d MJD |
222 | } |
223 | } | |
224 | ||
93965878 NIS |
225 | if (key < 0) { |
226 | key += AvFILL(av) + 1; | |
227 | if (key < 0) | |
228 | return 0; | |
229 | } | |
230 | ||
93965878 | 231 | if (key > AvFILLp(av)) { |
a0d0e21e LW |
232 | if (!lval) |
233 | return 0; | |
352edd90 | 234 | sv = NEWSV(5,0); |
a0d0e21e | 235 | return av_store(av,key,sv); |
79072805 | 236 | } |
3280af22 | 237 | if (AvARRAY(av)[key] == &PL_sv_undef) { |
4dbf4341 | 238 | emptyness: |
79072805 LW |
239 | if (lval) { |
240 | sv = NEWSV(6,0); | |
463ee0b2 | 241 | return av_store(av,key,sv); |
79072805 LW |
242 | } |
243 | return 0; | |
244 | } | |
4dbf4341 | 245 | else if (AvREIFY(av) |
246 | && (!AvARRAY(av)[key] /* eg. @_ could have freed elts */ | |
0565a181 | 247 | || SvIS_FREED(AvARRAY(av)[key]))) { |
3280af22 | 248 | AvARRAY(av)[key] = &PL_sv_undef; /* 1/2 reify */ |
4dbf4341 | 249 | goto emptyness; |
250 | } | |
463ee0b2 | 251 | return &AvARRAY(av)[key]; |
79072805 LW |
252 | } |
253 | ||
cb50131a CB |
254 | /* |
255 | =for apidoc av_store | |
256 | ||
257 | Stores an SV in an array. The array index is specified as C<key>. The | |
258 | return value will be NULL if the operation failed or if the value did not | |
259 | need to be actually stored within the array (as in the case of tied | |
260 | arrays). Otherwise it can be dereferenced to get the original C<SV*>. Note | |
261 | that the caller is responsible for suitably incrementing the reference | |
262 | count of C<val> before the call, and decrementing it if the function | |
263 | returned NULL. | |
264 | ||
265 | See L<perlguts/"Understanding the Magic of Tied Hashes and Arrays"> for | |
266 | more information on how to use this function on tied arrays. | |
267 | ||
268 | =cut | |
269 | */ | |
270 | ||
79072805 | 271 | SV** |
864dbfa3 | 272 | Perl_av_store(pTHX_ register AV *av, I32 key, SV *val) |
79072805 | 273 | { |
79072805 LW |
274 | SV** ary; |
275 | ||
a0d0e21e LW |
276 | if (!av) |
277 | return 0; | |
43fcc5d2 | 278 | if (!val) |
3280af22 | 279 | val = &PL_sv_undef; |
463ee0b2 | 280 | |
6f12eb6d | 281 | if (SvRMAGICAL(av)) { |
35a4481c | 282 | const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied); |
6f12eb6d MJD |
283 | if (tied_magic) { |
284 | /* Handle negative array indices 20020222 MJD */ | |
285 | if (key < 0) { | |
286 | unsigned adjust_index = 1; | |
823a54a3 | 287 | SV * const * const negative_indices_glob = |
6f12eb6d MJD |
288 | hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av, |
289 | tied_magic))), | |
290 | NEGATIVE_INDICES_VAR, 16, 0); | |
291 | if (negative_indices_glob | |
292 | && SvTRUE(GvSV(*negative_indices_glob))) | |
293 | adjust_index = 0; | |
294 | if (adjust_index) { | |
295 | key += AvFILL(av) + 1; | |
296 | if (key < 0) | |
297 | return 0; | |
298 | } | |
299 | } | |
300 | if (val != &PL_sv_undef) { | |
301 | mg_copy((SV*)av, val, 0, key); | |
302 | } | |
303 | return 0; | |
304 | } | |
305 | } | |
306 | ||
307 | ||
a0d0e21e LW |
308 | if (key < 0) { |
309 | key += AvFILL(av) + 1; | |
310 | if (key < 0) | |
311 | return 0; | |
79072805 | 312 | } |
93965878 | 313 | |
43fcc5d2 | 314 | if (SvREADONLY(av) && key >= AvFILL(av)) |
cea2e8a9 | 315 | Perl_croak(aTHX_ PL_no_modify); |
93965878 | 316 | |
49beac48 | 317 | if (!AvREAL(av) && AvREIFY(av)) |
a0d0e21e | 318 | av_reify(av); |
a0d0e21e LW |
319 | if (key > AvMAX(av)) |
320 | av_extend(av,key); | |
463ee0b2 | 321 | ary = AvARRAY(av); |
93965878 | 322 | if (AvFILLp(av) < key) { |
a0d0e21e | 323 | if (!AvREAL(av)) { |
3280af22 NIS |
324 | if (av == PL_curstack && key > PL_stack_sp - PL_stack_base) |
325 | PL_stack_sp = PL_stack_base + key; /* XPUSH in disguise */ | |
a0d0e21e | 326 | do |
3280af22 | 327 | ary[++AvFILLp(av)] = &PL_sv_undef; |
93965878 | 328 | while (AvFILLp(av) < key); |
79072805 | 329 | } |
93965878 | 330 | AvFILLp(av) = key; |
79072805 | 331 | } |
a0d0e21e LW |
332 | else if (AvREAL(av)) |
333 | SvREFCNT_dec(ary[key]); | |
79072805 | 334 | ary[key] = val; |
8990e307 | 335 | if (SvSMAGICAL(av)) { |
3280af22 | 336 | if (val != &PL_sv_undef) { |
a0d0e21e LW |
337 | MAGIC* mg = SvMAGIC(av); |
338 | sv_magic(val, (SV*)av, toLOWER(mg->mg_type), 0, key); | |
339 | } | |
463ee0b2 LW |
340 | mg_set((SV*)av); |
341 | } | |
79072805 LW |
342 | return &ary[key]; |
343 | } | |
344 | ||
cb50131a CB |
345 | /* |
346 | =for apidoc newAV | |
347 | ||
348 | Creates a new AV. The reference count is set to 1. | |
349 | ||
350 | =cut | |
351 | */ | |
352 | ||
79072805 | 353 | AV * |
864dbfa3 | 354 | Perl_newAV(pTHX) |
79072805 | 355 | { |
823a54a3 | 356 | register AV * const av = (AV*)NEWSV(3,0); |
79072805 | 357 | |
a0d0e21e | 358 | sv_upgrade((SV *)av, SVt_PVAV); |
a7f5e44d | 359 | /* sv_upgrade does AvREAL_only() */ |
463ee0b2 | 360 | AvALLOC(av) = 0; |
f880fe2f | 361 | SvPV_set(av, (char*)0); |
93965878 | 362 | AvMAX(av) = AvFILLp(av) = -1; |
463ee0b2 | 363 | return av; |
79072805 LW |
364 | } |
365 | ||
cb50131a CB |
366 | /* |
367 | =for apidoc av_make | |
368 | ||
369 | Creates a new AV and populates it with a list of SVs. The SVs are copied | |
370 | into the array, so they may be freed after the call to av_make. The new AV | |
371 | will have a reference count of 1. | |
372 | ||
373 | =cut | |
374 | */ | |
375 | ||
79072805 | 376 | AV * |
864dbfa3 | 377 | Perl_av_make(pTHX_ register I32 size, register SV **strp) |
79072805 | 378 | { |
823a54a3 | 379 | register AV * const av = (AV*)NEWSV(8,0); |
79072805 | 380 | |
a0d0e21e | 381 | sv_upgrade((SV *) av,SVt_PVAV); |
a7f5e44d | 382 | /* sv_upgrade does AvREAL_only() */ |
a0288114 | 383 | if (size) { /* "defined" was returning undef for size==0 anyway. */ |
dd374669 AL |
384 | register SV** ary; |
385 | register I32 i; | |
a02a5408 | 386 | Newx(ary,size,SV*); |
573fa4ea | 387 | AvALLOC(av) = ary; |
f880fe2f | 388 | SvPV_set(av, (char*)ary); |
93965878 | 389 | AvFILLp(av) = size - 1; |
573fa4ea TB |
390 | AvMAX(av) = size - 1; |
391 | for (i = 0; i < size; i++) { | |
392 | assert (*strp); | |
393 | ary[i] = NEWSV(7,0); | |
394 | sv_setsv(ary[i], *strp); | |
395 | strp++; | |
396 | } | |
79072805 | 397 | } |
463ee0b2 | 398 | return av; |
79072805 LW |
399 | } |
400 | ||
cb50131a CB |
401 | /* |
402 | =for apidoc av_clear | |
403 | ||
404 | Clears an array, making it empty. Does not free the memory used by the | |
405 | array itself. | |
406 | ||
407 | =cut | |
408 | */ | |
409 | ||
79072805 | 410 | void |
864dbfa3 | 411 | Perl_av_clear(pTHX_ register AV *av) |
79072805 LW |
412 | { |
413 | register I32 key; | |
414 | ||
7d55f622 | 415 | #ifdef DEBUGGING |
32da55ab | 416 | if (SvREFCNT(av) == 0 && ckWARN_d(WARN_DEBUGGING)) { |
9014280d | 417 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), "Attempt to clear deleted array"); |
7d55f622 | 418 | } |
419 | #endif | |
a60c0954 | 420 | if (!av) |
79072805 | 421 | return; |
a0d0e21e | 422 | |
39caa665 | 423 | if (SvREADONLY(av)) |
cea2e8a9 | 424 | Perl_croak(aTHX_ PL_no_modify); |
39caa665 | 425 | |
93965878 NIS |
426 | /* Give any tie a chance to cleanup first */ |
427 | if (SvRMAGICAL(av)) | |
428 | mg_clear((SV*)av); | |
429 | ||
a60c0954 NIS |
430 | if (AvMAX(av) < 0) |
431 | return; | |
432 | ||
a0d0e21e | 433 | if (AvREAL(av)) { |
823a54a3 | 434 | SV** const ary = AvARRAY(av); |
93965878 | 435 | key = AvFILLp(av) + 1; |
a0d0e21e | 436 | while (key) { |
823a54a3 | 437 | SV * const sv = ary[--key]; |
6b42d12b DM |
438 | /* undef the slot before freeing the value, because a |
439 | * destructor might try to modify this arrray */ | |
3280af22 | 440 | ary[key] = &PL_sv_undef; |
6b42d12b | 441 | SvREFCNT_dec(sv); |
a0d0e21e LW |
442 | } |
443 | } | |
155aba94 | 444 | if ((key = AvARRAY(av) - AvALLOC(av))) { |
463ee0b2 | 445 | AvMAX(av) += key; |
f880fe2f | 446 | SvPV_set(av, (char*)AvALLOC(av)); |
79072805 | 447 | } |
93965878 | 448 | AvFILLp(av) = -1; |
fb73857a | 449 | |
79072805 LW |
450 | } |
451 | ||
cb50131a CB |
452 | /* |
453 | =for apidoc av_undef | |
454 | ||
455 | Undefines the array. Frees the memory used by the array itself. | |
456 | ||
457 | =cut | |
458 | */ | |
459 | ||
79072805 | 460 | void |
864dbfa3 | 461 | Perl_av_undef(pTHX_ register AV *av) |
79072805 | 462 | { |
463ee0b2 | 463 | if (!av) |
79072805 | 464 | return; |
93965878 NIS |
465 | |
466 | /* Give any tie a chance to cleanup first */ | |
14befaf4 | 467 | if (SvTIED_mg((SV*)av, PERL_MAGIC_tied)) |
93965878 NIS |
468 | av_fill(av, -1); /* mg_clear() ? */ |
469 | ||
a0d0e21e | 470 | if (AvREAL(av)) { |
a3b680e6 | 471 | register I32 key = AvFILLp(av) + 1; |
a0d0e21e LW |
472 | while (key) |
473 | SvREFCNT_dec(AvARRAY(av)[--key]); | |
474 | } | |
463ee0b2 LW |
475 | Safefree(AvALLOC(av)); |
476 | AvALLOC(av) = 0; | |
f880fe2f | 477 | SvPV_set(av, (char*)0); |
93965878 | 478 | AvMAX(av) = AvFILLp(av) = -1; |
79072805 LW |
479 | } |
480 | ||
cb50131a CB |
481 | /* |
482 | =for apidoc av_push | |
483 | ||
484 | Pushes an SV onto the end of the array. The array will grow automatically | |
485 | to accommodate the addition. | |
486 | ||
487 | =cut | |
488 | */ | |
489 | ||
a0d0e21e | 490 | void |
864dbfa3 | 491 | Perl_av_push(pTHX_ register AV *av, SV *val) |
93965878 | 492 | { |
27da23d5 | 493 | dVAR; |
93965878 | 494 | MAGIC *mg; |
a0d0e21e LW |
495 | if (!av) |
496 | return; | |
93965878 | 497 | if (SvREADONLY(av)) |
cea2e8a9 | 498 | Perl_croak(aTHX_ PL_no_modify); |
93965878 | 499 | |
14befaf4 | 500 | if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) { |
93965878 | 501 | dSP; |
e788e7d3 | 502 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
503 | PUSHMARK(SP); |
504 | EXTEND(SP,2); | |
33c27489 | 505 | PUSHs(SvTIED_obj((SV*)av, mg)); |
93965878 | 506 | PUSHs(val); |
a60c0954 NIS |
507 | PUTBACK; |
508 | ENTER; | |
864dbfa3 | 509 | call_method("PUSH", G_SCALAR|G_DISCARD); |
a60c0954 | 510 | LEAVE; |
d3acc0f7 | 511 | POPSTACK; |
93965878 NIS |
512 | return; |
513 | } | |
514 | av_store(av,AvFILLp(av)+1,val); | |
79072805 LW |
515 | } |
516 | ||
cb50131a CB |
517 | /* |
518 | =for apidoc av_pop | |
519 | ||
520 | Pops an SV off the end of the array. Returns C<&PL_sv_undef> if the array | |
521 | is empty. | |
522 | ||
523 | =cut | |
524 | */ | |
525 | ||
79072805 | 526 | SV * |
864dbfa3 | 527 | Perl_av_pop(pTHX_ register AV *av) |
79072805 | 528 | { |
27da23d5 | 529 | dVAR; |
79072805 | 530 | SV *retval; |
93965878 | 531 | MAGIC* mg; |
79072805 | 532 | |
d19c0e07 MJD |
533 | if (!av) |
534 | return &PL_sv_undef; | |
43fcc5d2 | 535 | if (SvREADONLY(av)) |
cea2e8a9 | 536 | Perl_croak(aTHX_ PL_no_modify); |
14befaf4 | 537 | if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) { |
93965878 | 538 | dSP; |
e788e7d3 | 539 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 540 | PUSHMARK(SP); |
33c27489 | 541 | XPUSHs(SvTIED_obj((SV*)av, mg)); |
a60c0954 NIS |
542 | PUTBACK; |
543 | ENTER; | |
864dbfa3 | 544 | if (call_method("POP", G_SCALAR)) { |
3280af22 | 545 | retval = newSVsv(*PL_stack_sp--); |
93965878 | 546 | } else { |
3280af22 | 547 | retval = &PL_sv_undef; |
93965878 | 548 | } |
a60c0954 | 549 | LEAVE; |
d3acc0f7 | 550 | POPSTACK; |
93965878 NIS |
551 | return retval; |
552 | } | |
d19c0e07 MJD |
553 | if (AvFILL(av) < 0) |
554 | return &PL_sv_undef; | |
93965878 | 555 | retval = AvARRAY(av)[AvFILLp(av)]; |
3280af22 | 556 | AvARRAY(av)[AvFILLp(av)--] = &PL_sv_undef; |
8990e307 | 557 | if (SvSMAGICAL(av)) |
463ee0b2 | 558 | mg_set((SV*)av); |
79072805 LW |
559 | return retval; |
560 | } | |
561 | ||
cb50131a CB |
562 | /* |
563 | =for apidoc av_unshift | |
564 | ||
565 | Unshift the given number of C<undef> values onto the beginning of the | |
566 | array. The array will grow automatically to accommodate the addition. You | |
567 | must then use C<av_store> to assign values to these new elements. | |
568 | ||
569 | =cut | |
570 | */ | |
571 | ||
79072805 | 572 | void |
864dbfa3 | 573 | Perl_av_unshift(pTHX_ register AV *av, register I32 num) |
79072805 | 574 | { |
27da23d5 | 575 | dVAR; |
79072805 | 576 | register I32 i; |
93965878 | 577 | MAGIC* mg; |
79072805 | 578 | |
d19c0e07 | 579 | if (!av) |
79072805 | 580 | return; |
43fcc5d2 | 581 | if (SvREADONLY(av)) |
cea2e8a9 | 582 | Perl_croak(aTHX_ PL_no_modify); |
93965878 | 583 | |
14befaf4 | 584 | if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) { |
93965878 | 585 | dSP; |
e788e7d3 | 586 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
587 | PUSHMARK(SP); |
588 | EXTEND(SP,1+num); | |
33c27489 | 589 | PUSHs(SvTIED_obj((SV*)av, mg)); |
93965878 | 590 | while (num-- > 0) { |
3280af22 | 591 | PUSHs(&PL_sv_undef); |
93965878 NIS |
592 | } |
593 | PUTBACK; | |
a60c0954 | 594 | ENTER; |
864dbfa3 | 595 | call_method("UNSHIFT", G_SCALAR|G_DISCARD); |
a60c0954 | 596 | LEAVE; |
d3acc0f7 | 597 | POPSTACK; |
93965878 NIS |
598 | return; |
599 | } | |
600 | ||
d19c0e07 MJD |
601 | if (num <= 0) |
602 | return; | |
49beac48 CS |
603 | if (!AvREAL(av) && AvREIFY(av)) |
604 | av_reify(av); | |
a0d0e21e LW |
605 | i = AvARRAY(av) - AvALLOC(av); |
606 | if (i) { | |
607 | if (i > num) | |
608 | i = num; | |
609 | num -= i; | |
610 | ||
611 | AvMAX(av) += i; | |
93965878 | 612 | AvFILLp(av) += i; |
f880fe2f | 613 | SvPV_set(av, (char*)(AvARRAY(av) - i)); |
a0d0e21e | 614 | } |
d2719217 | 615 | if (num) { |
a3b680e6 AL |
616 | register SV **ary; |
617 | I32 slide; | |
67a38de0 | 618 | i = AvFILLp(av); |
e2b534e7 BT |
619 | /* Create extra elements */ |
620 | slide = i > 0 ? i : 0; | |
621 | num += slide; | |
67a38de0 | 622 | av_extend(av, i + num); |
93965878 | 623 | AvFILLp(av) += num; |
67a38de0 NIS |
624 | ary = AvARRAY(av); |
625 | Move(ary, ary + num, i + 1, SV*); | |
626 | do { | |
3280af22 | 627 | ary[--num] = &PL_sv_undef; |
67a38de0 | 628 | } while (num); |
e2b534e7 BT |
629 | /* Make extra elements into a buffer */ |
630 | AvMAX(av) -= slide; | |
631 | AvFILLp(av) -= slide; | |
f880fe2f | 632 | SvPV_set(av, (char*)(AvARRAY(av) + slide)); |
79072805 LW |
633 | } |
634 | } | |
635 | ||
cb50131a CB |
636 | /* |
637 | =for apidoc av_shift | |
638 | ||
639 | Shifts an SV off the beginning of the array. | |
640 | ||
641 | =cut | |
642 | */ | |
643 | ||
79072805 | 644 | SV * |
864dbfa3 | 645 | Perl_av_shift(pTHX_ register AV *av) |
79072805 | 646 | { |
27da23d5 | 647 | dVAR; |
79072805 | 648 | SV *retval; |
93965878 | 649 | MAGIC* mg; |
79072805 | 650 | |
d19c0e07 | 651 | if (!av) |
3280af22 | 652 | return &PL_sv_undef; |
43fcc5d2 | 653 | if (SvREADONLY(av)) |
cea2e8a9 | 654 | Perl_croak(aTHX_ PL_no_modify); |
14befaf4 | 655 | if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) { |
93965878 | 656 | dSP; |
e788e7d3 | 657 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 658 | PUSHMARK(SP); |
33c27489 | 659 | XPUSHs(SvTIED_obj((SV*)av, mg)); |
a60c0954 NIS |
660 | PUTBACK; |
661 | ENTER; | |
864dbfa3 | 662 | if (call_method("SHIFT", G_SCALAR)) { |
3280af22 | 663 | retval = newSVsv(*PL_stack_sp--); |
93965878 | 664 | } else { |
3280af22 | 665 | retval = &PL_sv_undef; |
a60c0954 NIS |
666 | } |
667 | LEAVE; | |
d3acc0f7 | 668 | POPSTACK; |
93965878 NIS |
669 | return retval; |
670 | } | |
d19c0e07 MJD |
671 | if (AvFILL(av) < 0) |
672 | return &PL_sv_undef; | |
463ee0b2 | 673 | retval = *AvARRAY(av); |
a0d0e21e | 674 | if (AvREAL(av)) |
3280af22 | 675 | *AvARRAY(av) = &PL_sv_undef; |
f880fe2f | 676 | SvPV_set(av, (char*)(AvARRAY(av) + 1)); |
463ee0b2 | 677 | AvMAX(av)--; |
93965878 | 678 | AvFILLp(av)--; |
8990e307 | 679 | if (SvSMAGICAL(av)) |
463ee0b2 | 680 | mg_set((SV*)av); |
79072805 LW |
681 | return retval; |
682 | } | |
683 | ||
cb50131a CB |
684 | /* |
685 | =for apidoc av_len | |
686 | ||
687 | Returns the highest index in the array. Returns -1 if the array is | |
688 | empty. | |
689 | ||
690 | =cut | |
691 | */ | |
692 | ||
79072805 | 693 | I32 |
0d46e09a | 694 | Perl_av_len(pTHX_ register const AV *av) |
79072805 | 695 | { |
463ee0b2 | 696 | return AvFILL(av); |
79072805 LW |
697 | } |
698 | ||
f3b76584 SC |
699 | /* |
700 | =for apidoc av_fill | |
701 | ||
702 | Ensure than an array has a given number of elements, equivalent to | |
703 | Perl's C<$#array = $fill;>. | |
704 | ||
705 | =cut | |
706 | */ | |
79072805 | 707 | void |
864dbfa3 | 708 | Perl_av_fill(pTHX_ register AV *av, I32 fill) |
79072805 | 709 | { |
27da23d5 | 710 | dVAR; |
93965878 | 711 | MAGIC *mg; |
a0d0e21e | 712 | if (!av) |
cea2e8a9 | 713 | Perl_croak(aTHX_ "panic: null array"); |
79072805 LW |
714 | if (fill < 0) |
715 | fill = -1; | |
14befaf4 | 716 | if ((mg = SvTIED_mg((SV*)av, PERL_MAGIC_tied))) { |
93965878 NIS |
717 | dSP; |
718 | ENTER; | |
719 | SAVETMPS; | |
e788e7d3 | 720 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
721 | PUSHMARK(SP); |
722 | EXTEND(SP,2); | |
33c27489 | 723 | PUSHs(SvTIED_obj((SV*)av, mg)); |
a60c0954 | 724 | PUSHs(sv_2mortal(newSViv(fill+1))); |
93965878 | 725 | PUTBACK; |
864dbfa3 | 726 | call_method("STORESIZE", G_SCALAR|G_DISCARD); |
d3acc0f7 | 727 | POPSTACK; |
93965878 NIS |
728 | FREETMPS; |
729 | LEAVE; | |
730 | return; | |
731 | } | |
463ee0b2 | 732 | if (fill <= AvMAX(av)) { |
93965878 | 733 | I32 key = AvFILLp(av); |
a0d0e21e LW |
734 | SV** ary = AvARRAY(av); |
735 | ||
736 | if (AvREAL(av)) { | |
737 | while (key > fill) { | |
738 | SvREFCNT_dec(ary[key]); | |
3280af22 | 739 | ary[key--] = &PL_sv_undef; |
a0d0e21e LW |
740 | } |
741 | } | |
742 | else { | |
743 | while (key < fill) | |
3280af22 | 744 | ary[++key] = &PL_sv_undef; |
a0d0e21e LW |
745 | } |
746 | ||
93965878 | 747 | AvFILLp(av) = fill; |
8990e307 | 748 | if (SvSMAGICAL(av)) |
463ee0b2 LW |
749 | mg_set((SV*)av); |
750 | } | |
a0d0e21e | 751 | else |
3280af22 | 752 | (void)av_store(av,fill,&PL_sv_undef); |
79072805 | 753 | } |
c750a3ec | 754 | |
f3b76584 SC |
755 | /* |
756 | =for apidoc av_delete | |
757 | ||
758 | Deletes the element indexed by C<key> from the array. Returns the | |
a6214072 DM |
759 | deleted element. If C<flags> equals C<G_DISCARD>, the element is freed |
760 | and null is returned. | |
f3b76584 SC |
761 | |
762 | =cut | |
763 | */ | |
146174a9 CB |
764 | SV * |
765 | Perl_av_delete(pTHX_ AV *av, I32 key, I32 flags) | |
766 | { | |
767 | SV *sv; | |
768 | ||
769 | if (!av) | |
770 | return Nullsv; | |
771 | if (SvREADONLY(av)) | |
772 | Perl_croak(aTHX_ PL_no_modify); | |
6f12eb6d MJD |
773 | |
774 | if (SvRMAGICAL(av)) { | |
35a4481c | 775 | const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied); |
6f12eb6d MJD |
776 | if ((tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata))) { |
777 | /* Handle negative array indices 20020222 MJD */ | |
35a4481c | 778 | SV **svp; |
6f12eb6d MJD |
779 | if (key < 0) { |
780 | unsigned adjust_index = 1; | |
781 | if (tied_magic) { | |
823a54a3 | 782 | SV * const * const negative_indices_glob = |
6f12eb6d MJD |
783 | hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av, |
784 | tied_magic))), | |
785 | NEGATIVE_INDICES_VAR, 16, 0); | |
786 | if (negative_indices_glob | |
787 | && SvTRUE(GvSV(*negative_indices_glob))) | |
788 | adjust_index = 0; | |
789 | } | |
790 | if (adjust_index) { | |
791 | key += AvFILL(av) + 1; | |
792 | if (key < 0) | |
793 | return Nullsv; | |
794 | } | |
795 | } | |
796 | svp = av_fetch(av, key, TRUE); | |
797 | if (svp) { | |
798 | sv = *svp; | |
799 | mg_clear(sv); | |
800 | if (mg_find(sv, PERL_MAGIC_tiedelem)) { | |
801 | sv_unmagic(sv, PERL_MAGIC_tiedelem); /* No longer an element */ | |
802 | return sv; | |
803 | } | |
804 | return Nullsv; | |
805 | } | |
806 | } | |
807 | } | |
808 | ||
146174a9 CB |
809 | if (key < 0) { |
810 | key += AvFILL(av) + 1; | |
811 | if (key < 0) | |
812 | return Nullsv; | |
813 | } | |
6f12eb6d | 814 | |
146174a9 CB |
815 | if (key > AvFILLp(av)) |
816 | return Nullsv; | |
817 | else { | |
a6214072 DM |
818 | if (!AvREAL(av) && AvREIFY(av)) |
819 | av_reify(av); | |
146174a9 CB |
820 | sv = AvARRAY(av)[key]; |
821 | if (key == AvFILLp(av)) { | |
d9c63288 | 822 | AvARRAY(av)[key] = &PL_sv_undef; |
146174a9 CB |
823 | do { |
824 | AvFILLp(av)--; | |
825 | } while (--key >= 0 && AvARRAY(av)[key] == &PL_sv_undef); | |
826 | } | |
827 | else | |
828 | AvARRAY(av)[key] = &PL_sv_undef; | |
829 | if (SvSMAGICAL(av)) | |
830 | mg_set((SV*)av); | |
831 | } | |
832 | if (flags & G_DISCARD) { | |
833 | SvREFCNT_dec(sv); | |
834 | sv = Nullsv; | |
835 | } | |
fdb3bdd0 | 836 | else if (AvREAL(av)) |
2c8ddff3 | 837 | sv = sv_2mortal(sv); |
146174a9 CB |
838 | return sv; |
839 | } | |
840 | ||
841 | /* | |
f3b76584 SC |
842 | =for apidoc av_exists |
843 | ||
844 | Returns true if the element indexed by C<key> has been initialized. | |
146174a9 | 845 | |
f3b76584 SC |
846 | This relies on the fact that uninitialized array elements are set to |
847 | C<&PL_sv_undef>. | |
848 | ||
849 | =cut | |
850 | */ | |
146174a9 CB |
851 | bool |
852 | Perl_av_exists(pTHX_ AV *av, I32 key) | |
853 | { | |
854 | if (!av) | |
855 | return FALSE; | |
6f12eb6d MJD |
856 | |
857 | ||
858 | if (SvRMAGICAL(av)) { | |
35a4481c | 859 | const MAGIC * const tied_magic = mg_find((SV*)av, PERL_MAGIC_tied); |
6f12eb6d MJD |
860 | if (tied_magic || mg_find((SV*)av, PERL_MAGIC_regdata)) { |
861 | SV *sv = sv_newmortal(); | |
862 | MAGIC *mg; | |
863 | /* Handle negative array indices 20020222 MJD */ | |
864 | if (key < 0) { | |
865 | unsigned adjust_index = 1; | |
866 | if (tied_magic) { | |
823a54a3 | 867 | SV * const * const negative_indices_glob = |
6f12eb6d MJD |
868 | hv_fetch(SvSTASH(SvRV(SvTIED_obj((SV *)av, |
869 | tied_magic))), | |
870 | NEGATIVE_INDICES_VAR, 16, 0); | |
871 | if (negative_indices_glob | |
872 | && SvTRUE(GvSV(*negative_indices_glob))) | |
873 | adjust_index = 0; | |
874 | } | |
875 | if (adjust_index) { | |
876 | key += AvFILL(av) + 1; | |
877 | if (key < 0) | |
878 | return FALSE; | |
879 | } | |
880 | } | |
881 | ||
882 | mg_copy((SV*)av, sv, 0, key); | |
883 | mg = mg_find(sv, PERL_MAGIC_tiedelem); | |
884 | if (mg) { | |
885 | magic_existspack(sv, mg); | |
886 | return (bool)SvTRUE(sv); | |
887 | } | |
888 | ||
889 | } | |
890 | } | |
891 | ||
146174a9 CB |
892 | if (key < 0) { |
893 | key += AvFILL(av) + 1; | |
894 | if (key < 0) | |
895 | return FALSE; | |
896 | } | |
6f12eb6d | 897 | |
146174a9 CB |
898 | if (key <= AvFILLp(av) && AvARRAY(av)[key] != &PL_sv_undef |
899 | && AvARRAY(av)[key]) | |
900 | { | |
901 | return TRUE; | |
902 | } | |
903 | else | |
904 | return FALSE; | |
905 | } | |
66610fdd | 906 | |
a3874608 NC |
907 | SV ** |
908 | Perl_av_arylen_p(pTHX_ AV *av) { | |
909 | dVAR; | |
910 | MAGIC *mg = mg_find((SV*)av, PERL_MAGIC_arylen_p); | |
911 | ||
912 | if (!mg) { | |
1b20cd17 NC |
913 | mg = sv_magicext((SV*)av, 0, PERL_MAGIC_arylen_p, &PL_vtbl_arylen_p, |
914 | 0, 0); | |
a3874608 NC |
915 | |
916 | if (!mg) { | |
917 | Perl_die(aTHX_ "panic: av_arylen_p"); | |
918 | } | |
919 | /* sv_magicext won't set this for us because we pass in a NULL obj */ | |
920 | mg->mg_flags |= MGf_REFCOUNTED; | |
921 | } | |
922 | return &(mg->mg_obj); | |
923 | } | |
924 | ||
66610fdd RGS |
925 | /* |
926 | * Local variables: | |
927 | * c-indentation-style: bsd | |
928 | * c-basic-offset: 4 | |
929 | * indent-tabs-mode: t | |
930 | * End: | |
931 | * | |
37442d52 RGS |
932 | * ex: set ts=8 sts=4 sw=4 noet: |
933 | */ |