Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* av.c |
79072805 | 2 | * |
4eb8286e | 3 | * Copyright (c) 1991-1999, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "...for the Entwives desired order, and plenty, and peace (by which they | |
12 | * meant that things should remain where they had set them)." --Treebeard | |
79072805 LW |
13 | */ |
14 | ||
15 | #include "EXTERN.h" | |
864dbfa3 | 16 | #define PERL_IN_AV_C |
79072805 LW |
17 | #include "perl.h" |
18 | ||
fb73857a | 19 | void |
864dbfa3 | 20 | Perl_av_reify(pTHX_ AV *av) |
a0d0e21e LW |
21 | { |
22 | I32 key; | |
23 | SV* sv; | |
fb73857a | 24 | |
3c78fafa GS |
25 | if (AvREAL(av)) |
26 | return; | |
93965878 | 27 | #ifdef DEBUGGING |
0453d815 PM |
28 | if (SvTIED_mg((SV*)av, 'P') && ckWARN_d(WARN_DEBUGGING)) |
29 | Perl_warner(aTHX_ WARN_DEBUGGING, "av_reify called on tied array"); | |
93965878 | 30 | #endif |
a0d0e21e | 31 | key = AvMAX(av) + 1; |
93965878 | 32 | while (key > AvFILLp(av) + 1) |
3280af22 | 33 | AvARRAY(av)[--key] = &PL_sv_undef; |
a0d0e21e LW |
34 | while (key) { |
35 | sv = AvARRAY(av)[--key]; | |
36 | assert(sv); | |
3280af22 | 37 | if (sv != &PL_sv_undef) { |
11343788 | 38 | dTHR; |
a0d0e21e | 39 | (void)SvREFCNT_inc(sv); |
11343788 | 40 | } |
a0d0e21e | 41 | } |
29de640a CS |
42 | key = AvARRAY(av) - AvALLOC(av); |
43 | while (key) | |
3280af22 | 44 | AvALLOC(av)[--key] = &PL_sv_undef; |
62b1ebc2 | 45 | AvREIFY_off(av); |
a0d0e21e LW |
46 | AvREAL_on(av); |
47 | } | |
48 | ||
49 | void | |
864dbfa3 | 50 | Perl_av_extend(pTHX_ AV *av, I32 key) |
a0d0e21e | 51 | { |
11343788 | 52 | dTHR; /* only necessary if we have to extend stack */ |
93965878 | 53 | MAGIC *mg; |
33c27489 | 54 | if (mg = SvTIED_mg((SV*)av, 'P')) { |
93965878 NIS |
55 | dSP; |
56 | ENTER; | |
57 | SAVETMPS; | |
e788e7d3 | 58 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
59 | PUSHMARK(SP); |
60 | EXTEND(SP,2); | |
33c27489 | 61 | PUSHs(SvTIED_obj((SV*)av, mg)); |
a60c0954 | 62 | PUSHs(sv_2mortal(newSViv(key+1))); |
93965878 | 63 | PUTBACK; |
864dbfa3 | 64 | call_method("EXTEND", G_SCALAR|G_DISCARD); |
d3acc0f7 | 65 | POPSTACK; |
93965878 NIS |
66 | FREETMPS; |
67 | LEAVE; | |
68 | return; | |
69 | } | |
a0d0e21e LW |
70 | if (key > AvMAX(av)) { |
71 | SV** ary; | |
72 | I32 tmp; | |
73 | I32 newmax; | |
74 | ||
75 | if (AvALLOC(av) != AvARRAY(av)) { | |
93965878 | 76 | ary = AvALLOC(av) + AvFILLp(av) + 1; |
a0d0e21e | 77 | tmp = AvARRAY(av) - AvALLOC(av); |
93965878 | 78 | Move(AvARRAY(av), AvALLOC(av), AvFILLp(av)+1, SV*); |
a0d0e21e LW |
79 | AvMAX(av) += tmp; |
80 | SvPVX(av) = (char*)AvALLOC(av); | |
81 | if (AvREAL(av)) { | |
82 | while (tmp) | |
3280af22 | 83 | ary[--tmp] = &PL_sv_undef; |
a0d0e21e LW |
84 | } |
85 | ||
86 | if (key > AvMAX(av) - 10) { | |
87 | newmax = key + AvMAX(av); | |
88 | goto resize; | |
89 | } | |
90 | } | |
91 | else { | |
92 | if (AvALLOC(av)) { | |
c07a80fd | 93 | #ifndef STRANGE_MALLOC |
c1f7b11a SB |
94 | MEM_SIZE bytes; |
95 | IV itmp; | |
c07a80fd | 96 | #endif |
4633a7c4 | 97 | |
1fe09876 | 98 | #if defined(MYMALLOC) && !defined(PURIFY) && !defined(LEAKTEST) |
8d6dde3e IZ |
99 | newmax = malloced_size((void*)AvALLOC(av))/sizeof(SV*) - 1; |
100 | ||
101 | if (key <= newmax) | |
102 | goto resized; | |
103 | #endif | |
a0d0e21e LW |
104 | newmax = key + AvMAX(av) / 5; |
105 | resize: | |
8d6dde3e | 106 | #if defined(STRANGE_MALLOC) || defined(MYMALLOC) |
a0d0e21e | 107 | Renew(AvALLOC(av),newmax+1, SV*); |
4633a7c4 LW |
108 | #else |
109 | bytes = (newmax + 1) * sizeof(SV*); | |
110 | #define MALLOC_OVERHEAD 16 | |
c1f7b11a SB |
111 | itmp = MALLOC_OVERHEAD; |
112 | while (itmp - MALLOC_OVERHEAD < bytes) | |
113 | itmp += itmp; | |
114 | itmp -= MALLOC_OVERHEAD; | |
115 | itmp /= sizeof(SV*); | |
116 | assert(itmp > newmax); | |
117 | newmax = itmp - 1; | |
118 | assert(newmax >= AvMAX(av)); | |
4633a7c4 LW |
119 | New(2,ary, newmax+1, SV*); |
120 | Copy(AvALLOC(av), ary, AvMAX(av)+1, SV*); | |
fba3b22e MB |
121 | if (AvMAX(av) > 64) |
122 | offer_nice_chunk(AvALLOC(av), (AvMAX(av)+1) * sizeof(SV*)); | |
4633a7c4 LW |
123 | else |
124 | Safefree(AvALLOC(av)); | |
125 | AvALLOC(av) = ary; | |
126 | #endif | |
8d6dde3e | 127 | resized: |
a0d0e21e LW |
128 | ary = AvALLOC(av) + AvMAX(av) + 1; |
129 | tmp = newmax - AvMAX(av); | |
3280af22 NIS |
130 | if (av == PL_curstack) { /* Oops, grew stack (via av_store()?) */ |
131 | PL_stack_sp = AvALLOC(av) + (PL_stack_sp - PL_stack_base); | |
132 | PL_stack_base = AvALLOC(av); | |
133 | PL_stack_max = PL_stack_base + newmax; | |
a0d0e21e LW |
134 | } |
135 | } | |
136 | else { | |
8d6dde3e | 137 | newmax = key < 3 ? 3 : key; |
a0d0e21e LW |
138 | New(2,AvALLOC(av), newmax+1, SV*); |
139 | ary = AvALLOC(av) + 1; | |
140 | tmp = newmax; | |
3280af22 | 141 | AvALLOC(av)[0] = &PL_sv_undef; /* For the stacks */ |
a0d0e21e LW |
142 | } |
143 | if (AvREAL(av)) { | |
144 | while (tmp) | |
3280af22 | 145 | ary[--tmp] = &PL_sv_undef; |
a0d0e21e LW |
146 | } |
147 | ||
148 | SvPVX(av) = (char*)AvALLOC(av); | |
149 | AvMAX(av) = newmax; | |
150 | } | |
151 | } | |
152 | } | |
153 | ||
79072805 | 154 | SV** |
864dbfa3 | 155 | Perl_av_fetch(pTHX_ register AV *av, I32 key, I32 lval) |
79072805 LW |
156 | { |
157 | SV *sv; | |
158 | ||
a0d0e21e LW |
159 | if (!av) |
160 | return 0; | |
161 | ||
93965878 NIS |
162 | if (key < 0) { |
163 | key += AvFILL(av) + 1; | |
164 | if (key < 0) | |
165 | return 0; | |
166 | } | |
167 | ||
8990e307 | 168 | if (SvRMAGICAL(av)) { |
6cef1e77 | 169 | if (mg_find((SV*)av,'P') || mg_find((SV*)av,'D')) { |
11343788 | 170 | dTHR; |
8990e307 | 171 | sv = sv_newmortal(); |
463ee0b2 | 172 | mg_copy((SV*)av, sv, 0, key); |
3280af22 NIS |
173 | PL_av_fetch_sv = sv; |
174 | return &PL_av_fetch_sv; | |
463ee0b2 LW |
175 | } |
176 | } | |
177 | ||
93965878 | 178 | if (key > AvFILLp(av)) { |
a0d0e21e LW |
179 | if (!lval) |
180 | return 0; | |
352edd90 | 181 | sv = NEWSV(5,0); |
a0d0e21e | 182 | return av_store(av,key,sv); |
79072805 | 183 | } |
3280af22 | 184 | if (AvARRAY(av)[key] == &PL_sv_undef) { |
4dbf4341 | 185 | emptyness: |
79072805 LW |
186 | if (lval) { |
187 | sv = NEWSV(6,0); | |
463ee0b2 | 188 | return av_store(av,key,sv); |
79072805 LW |
189 | } |
190 | return 0; | |
191 | } | |
4dbf4341 | 192 | else if (AvREIFY(av) |
193 | && (!AvARRAY(av)[key] /* eg. @_ could have freed elts */ | |
194 | || SvTYPE(AvARRAY(av)[key]) == SVTYPEMASK)) { | |
3280af22 | 195 | AvARRAY(av)[key] = &PL_sv_undef; /* 1/2 reify */ |
4dbf4341 | 196 | goto emptyness; |
197 | } | |
463ee0b2 | 198 | return &AvARRAY(av)[key]; |
79072805 LW |
199 | } |
200 | ||
201 | SV** | |
864dbfa3 | 202 | Perl_av_store(pTHX_ register AV *av, I32 key, SV *val) |
79072805 | 203 | { |
79072805 | 204 | SV** ary; |
93965878 NIS |
205 | U32 fill; |
206 | ||
79072805 | 207 | |
a0d0e21e LW |
208 | if (!av) |
209 | return 0; | |
43fcc5d2 | 210 | if (!val) |
3280af22 | 211 | val = &PL_sv_undef; |
463ee0b2 | 212 | |
a0d0e21e LW |
213 | if (key < 0) { |
214 | key += AvFILL(av) + 1; | |
215 | if (key < 0) | |
216 | return 0; | |
79072805 | 217 | } |
93965878 | 218 | |
43fcc5d2 | 219 | if (SvREADONLY(av) && key >= AvFILL(av)) |
cea2e8a9 | 220 | Perl_croak(aTHX_ PL_no_modify); |
93965878 NIS |
221 | |
222 | if (SvRMAGICAL(av)) { | |
223 | if (mg_find((SV*)av,'P')) { | |
3280af22 | 224 | if (val != &PL_sv_undef) { |
93965878 NIS |
225 | mg_copy((SV*)av, val, 0, key); |
226 | } | |
227 | return 0; | |
228 | } | |
229 | } | |
230 | ||
49beac48 | 231 | if (!AvREAL(av) && AvREIFY(av)) |
a0d0e21e | 232 | av_reify(av); |
a0d0e21e LW |
233 | if (key > AvMAX(av)) |
234 | av_extend(av,key); | |
463ee0b2 | 235 | ary = AvARRAY(av); |
93965878 | 236 | if (AvFILLp(av) < key) { |
a0d0e21e | 237 | if (!AvREAL(av)) { |
11343788 | 238 | dTHR; |
3280af22 NIS |
239 | if (av == PL_curstack && key > PL_stack_sp - PL_stack_base) |
240 | PL_stack_sp = PL_stack_base + key; /* XPUSH in disguise */ | |
a0d0e21e | 241 | do |
3280af22 | 242 | ary[++AvFILLp(av)] = &PL_sv_undef; |
93965878 | 243 | while (AvFILLp(av) < key); |
79072805 | 244 | } |
93965878 | 245 | AvFILLp(av) = key; |
79072805 | 246 | } |
a0d0e21e LW |
247 | else if (AvREAL(av)) |
248 | SvREFCNT_dec(ary[key]); | |
79072805 | 249 | ary[key] = val; |
8990e307 | 250 | if (SvSMAGICAL(av)) { |
3280af22 | 251 | if (val != &PL_sv_undef) { |
a0d0e21e LW |
252 | MAGIC* mg = SvMAGIC(av); |
253 | sv_magic(val, (SV*)av, toLOWER(mg->mg_type), 0, key); | |
254 | } | |
463ee0b2 LW |
255 | mg_set((SV*)av); |
256 | } | |
79072805 LW |
257 | return &ary[key]; |
258 | } | |
259 | ||
260 | AV * | |
864dbfa3 | 261 | Perl_newAV(pTHX) |
79072805 | 262 | { |
463ee0b2 | 263 | register AV *av; |
79072805 | 264 | |
a0d0e21e LW |
265 | av = (AV*)NEWSV(3,0); |
266 | sv_upgrade((SV *)av, SVt_PVAV); | |
463ee0b2 LW |
267 | AvREAL_on(av); |
268 | AvALLOC(av) = 0; | |
269 | SvPVX(av) = 0; | |
93965878 | 270 | AvMAX(av) = AvFILLp(av) = -1; |
463ee0b2 | 271 | return av; |
79072805 LW |
272 | } |
273 | ||
274 | AV * | |
864dbfa3 | 275 | Perl_av_make(pTHX_ register I32 size, register SV **strp) |
79072805 | 276 | { |
463ee0b2 | 277 | register AV *av; |
79072805 LW |
278 | register I32 i; |
279 | register SV** ary; | |
280 | ||
a0d0e21e LW |
281 | av = (AV*)NEWSV(8,0); |
282 | sv_upgrade((SV *) av,SVt_PVAV); | |
a0d0e21e | 283 | AvFLAGS(av) = AVf_REAL; |
573fa4ea TB |
284 | if (size) { /* `defined' was returning undef for size==0 anyway. */ |
285 | New(4,ary,size,SV*); | |
286 | AvALLOC(av) = ary; | |
287 | SvPVX(av) = (char*)ary; | |
93965878 | 288 | AvFILLp(av) = size - 1; |
573fa4ea TB |
289 | AvMAX(av) = size - 1; |
290 | for (i = 0; i < size; i++) { | |
291 | assert (*strp); | |
292 | ary[i] = NEWSV(7,0); | |
293 | sv_setsv(ary[i], *strp); | |
294 | strp++; | |
295 | } | |
79072805 | 296 | } |
463ee0b2 | 297 | return av; |
79072805 LW |
298 | } |
299 | ||
300 | AV * | |
864dbfa3 | 301 | Perl_av_fake(pTHX_ register I32 size, register SV **strp) |
79072805 | 302 | { |
463ee0b2 | 303 | register AV *av; |
79072805 LW |
304 | register SV** ary; |
305 | ||
a0d0e21e LW |
306 | av = (AV*)NEWSV(9,0); |
307 | sv_upgrade((SV *)av, SVt_PVAV); | |
79072805 | 308 | New(4,ary,size+1,SV*); |
463ee0b2 | 309 | AvALLOC(av) = ary; |
79072805 | 310 | Copy(strp,ary,size,SV*); |
a0d0e21e | 311 | AvFLAGS(av) = AVf_REIFY; |
463ee0b2 | 312 | SvPVX(av) = (char*)ary; |
93965878 | 313 | AvFILLp(av) = size - 1; |
463ee0b2 | 314 | AvMAX(av) = size - 1; |
79072805 | 315 | while (size--) { |
a0d0e21e LW |
316 | assert (*strp); |
317 | SvTEMP_off(*strp); | |
79072805 LW |
318 | strp++; |
319 | } | |
463ee0b2 | 320 | return av; |
79072805 LW |
321 | } |
322 | ||
323 | void | |
864dbfa3 | 324 | Perl_av_clear(pTHX_ register AV *av) |
79072805 LW |
325 | { |
326 | register I32 key; | |
a0d0e21e | 327 | SV** ary; |
79072805 | 328 | |
7d55f622 | 329 | #ifdef DEBUGGING |
0453d815 PM |
330 | if (SvREFCNT(av) <= 0 && ckWARN_d(WARN_DEBUGGING)) { |
331 | Perl_warner(aTHX_ WARN_DEBUGGING, "Attempt to clear deleted array"); | |
7d55f622 | 332 | } |
333 | #endif | |
a60c0954 | 334 | if (!av) |
79072805 LW |
335 | return; |
336 | /*SUPPRESS 560*/ | |
a0d0e21e | 337 | |
39caa665 | 338 | if (SvREADONLY(av)) |
cea2e8a9 | 339 | Perl_croak(aTHX_ PL_no_modify); |
39caa665 | 340 | |
93965878 NIS |
341 | /* Give any tie a chance to cleanup first */ |
342 | if (SvRMAGICAL(av)) | |
343 | mg_clear((SV*)av); | |
344 | ||
a60c0954 NIS |
345 | if (AvMAX(av) < 0) |
346 | return; | |
347 | ||
a0d0e21e LW |
348 | if (AvREAL(av)) { |
349 | ary = AvARRAY(av); | |
93965878 | 350 | key = AvFILLp(av) + 1; |
a0d0e21e LW |
351 | while (key) { |
352 | SvREFCNT_dec(ary[--key]); | |
3280af22 | 353 | ary[key] = &PL_sv_undef; |
a0d0e21e LW |
354 | } |
355 | } | |
463ee0b2 LW |
356 | if (key = AvARRAY(av) - AvALLOC(av)) { |
357 | AvMAX(av) += key; | |
a0d0e21e | 358 | SvPVX(av) = (char*)AvALLOC(av); |
79072805 | 359 | } |
93965878 | 360 | AvFILLp(av) = -1; |
fb73857a | 361 | |
79072805 LW |
362 | } |
363 | ||
364 | void | |
864dbfa3 | 365 | Perl_av_undef(pTHX_ register AV *av) |
79072805 LW |
366 | { |
367 | register I32 key; | |
368 | ||
463ee0b2 | 369 | if (!av) |
79072805 LW |
370 | return; |
371 | /*SUPPRESS 560*/ | |
93965878 NIS |
372 | |
373 | /* Give any tie a chance to cleanup first */ | |
33c27489 | 374 | if (SvTIED_mg((SV*)av, 'P')) |
93965878 NIS |
375 | av_fill(av, -1); /* mg_clear() ? */ |
376 | ||
a0d0e21e | 377 | if (AvREAL(av)) { |
93965878 | 378 | key = AvFILLp(av) + 1; |
a0d0e21e LW |
379 | while (key) |
380 | SvREFCNT_dec(AvARRAY(av)[--key]); | |
381 | } | |
463ee0b2 LW |
382 | Safefree(AvALLOC(av)); |
383 | AvALLOC(av) = 0; | |
384 | SvPVX(av) = 0; | |
93965878 | 385 | AvMAX(av) = AvFILLp(av) = -1; |
748a9306 LW |
386 | if (AvARYLEN(av)) { |
387 | SvREFCNT_dec(AvARYLEN(av)); | |
388 | AvARYLEN(av) = 0; | |
389 | } | |
79072805 LW |
390 | } |
391 | ||
a0d0e21e | 392 | void |
864dbfa3 | 393 | Perl_av_push(pTHX_ register AV *av, SV *val) |
93965878 NIS |
394 | { |
395 | MAGIC *mg; | |
a0d0e21e LW |
396 | if (!av) |
397 | return; | |
93965878 | 398 | if (SvREADONLY(av)) |
cea2e8a9 | 399 | Perl_croak(aTHX_ PL_no_modify); |
93965878 | 400 | |
33c27489 | 401 | if (mg = SvTIED_mg((SV*)av, 'P')) { |
93965878 | 402 | dSP; |
e788e7d3 | 403 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
404 | PUSHMARK(SP); |
405 | EXTEND(SP,2); | |
33c27489 | 406 | PUSHs(SvTIED_obj((SV*)av, mg)); |
93965878 | 407 | PUSHs(val); |
a60c0954 NIS |
408 | PUTBACK; |
409 | ENTER; | |
864dbfa3 | 410 | call_method("PUSH", G_SCALAR|G_DISCARD); |
a60c0954 | 411 | LEAVE; |
d3acc0f7 | 412 | POPSTACK; |
93965878 NIS |
413 | return; |
414 | } | |
415 | av_store(av,AvFILLp(av)+1,val); | |
79072805 LW |
416 | } |
417 | ||
418 | SV * | |
864dbfa3 | 419 | Perl_av_pop(pTHX_ register AV *av) |
79072805 LW |
420 | { |
421 | SV *retval; | |
93965878 | 422 | MAGIC* mg; |
79072805 | 423 | |
a0d0e21e | 424 | if (!av || AvFILL(av) < 0) |
3280af22 | 425 | return &PL_sv_undef; |
43fcc5d2 | 426 | if (SvREADONLY(av)) |
cea2e8a9 | 427 | Perl_croak(aTHX_ PL_no_modify); |
33c27489 | 428 | if (mg = SvTIED_mg((SV*)av, 'P')) { |
93965878 | 429 | dSP; |
e788e7d3 | 430 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 431 | PUSHMARK(SP); |
33c27489 | 432 | XPUSHs(SvTIED_obj((SV*)av, mg)); |
a60c0954 NIS |
433 | PUTBACK; |
434 | ENTER; | |
864dbfa3 | 435 | if (call_method("POP", G_SCALAR)) { |
3280af22 | 436 | retval = newSVsv(*PL_stack_sp--); |
93965878 | 437 | } else { |
3280af22 | 438 | retval = &PL_sv_undef; |
93965878 | 439 | } |
a60c0954 | 440 | LEAVE; |
d3acc0f7 | 441 | POPSTACK; |
93965878 NIS |
442 | return retval; |
443 | } | |
444 | retval = AvARRAY(av)[AvFILLp(av)]; | |
3280af22 | 445 | AvARRAY(av)[AvFILLp(av)--] = &PL_sv_undef; |
8990e307 | 446 | if (SvSMAGICAL(av)) |
463ee0b2 | 447 | mg_set((SV*)av); |
79072805 LW |
448 | return retval; |
449 | } | |
450 | ||
451 | void | |
864dbfa3 | 452 | Perl_av_unshift(pTHX_ register AV *av, register I32 num) |
79072805 LW |
453 | { |
454 | register I32 i; | |
67a38de0 | 455 | register SV **ary; |
93965878 | 456 | MAGIC* mg; |
79072805 | 457 | |
a0d0e21e | 458 | if (!av || num <= 0) |
79072805 | 459 | return; |
43fcc5d2 | 460 | if (SvREADONLY(av)) |
cea2e8a9 | 461 | Perl_croak(aTHX_ PL_no_modify); |
93965878 | 462 | |
33c27489 | 463 | if (mg = SvTIED_mg((SV*)av, 'P')) { |
93965878 | 464 | dSP; |
e788e7d3 | 465 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
466 | PUSHMARK(SP); |
467 | EXTEND(SP,1+num); | |
33c27489 | 468 | PUSHs(SvTIED_obj((SV*)av, mg)); |
93965878 | 469 | while (num-- > 0) { |
3280af22 | 470 | PUSHs(&PL_sv_undef); |
93965878 NIS |
471 | } |
472 | PUTBACK; | |
a60c0954 | 473 | ENTER; |
864dbfa3 | 474 | call_method("UNSHIFT", G_SCALAR|G_DISCARD); |
a60c0954 | 475 | LEAVE; |
d3acc0f7 | 476 | POPSTACK; |
93965878 NIS |
477 | return; |
478 | } | |
479 | ||
49beac48 CS |
480 | if (!AvREAL(av) && AvREIFY(av)) |
481 | av_reify(av); | |
a0d0e21e LW |
482 | i = AvARRAY(av) - AvALLOC(av); |
483 | if (i) { | |
484 | if (i > num) | |
485 | i = num; | |
486 | num -= i; | |
487 | ||
488 | AvMAX(av) += i; | |
93965878 | 489 | AvFILLp(av) += i; |
a0d0e21e LW |
490 | SvPVX(av) = (char*)(AvARRAY(av) - i); |
491 | } | |
d2719217 | 492 | if (num) { |
67a38de0 NIS |
493 | i = AvFILLp(av); |
494 | av_extend(av, i + num); | |
93965878 | 495 | AvFILLp(av) += num; |
67a38de0 NIS |
496 | ary = AvARRAY(av); |
497 | Move(ary, ary + num, i + 1, SV*); | |
498 | do { | |
3280af22 | 499 | ary[--num] = &PL_sv_undef; |
67a38de0 | 500 | } while (num); |
79072805 LW |
501 | } |
502 | } | |
503 | ||
504 | SV * | |
864dbfa3 | 505 | Perl_av_shift(pTHX_ register AV *av) |
79072805 LW |
506 | { |
507 | SV *retval; | |
93965878 | 508 | MAGIC* mg; |
79072805 | 509 | |
a0d0e21e | 510 | if (!av || AvFILL(av) < 0) |
3280af22 | 511 | return &PL_sv_undef; |
43fcc5d2 | 512 | if (SvREADONLY(av)) |
cea2e8a9 | 513 | Perl_croak(aTHX_ PL_no_modify); |
33c27489 | 514 | if (mg = SvTIED_mg((SV*)av, 'P')) { |
93965878 | 515 | dSP; |
e788e7d3 | 516 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 517 | PUSHMARK(SP); |
33c27489 | 518 | XPUSHs(SvTIED_obj((SV*)av, mg)); |
a60c0954 NIS |
519 | PUTBACK; |
520 | ENTER; | |
864dbfa3 | 521 | if (call_method("SHIFT", G_SCALAR)) { |
3280af22 | 522 | retval = newSVsv(*PL_stack_sp--); |
93965878 | 523 | } else { |
3280af22 | 524 | retval = &PL_sv_undef; |
a60c0954 NIS |
525 | } |
526 | LEAVE; | |
d3acc0f7 | 527 | POPSTACK; |
93965878 NIS |
528 | return retval; |
529 | } | |
463ee0b2 | 530 | retval = *AvARRAY(av); |
a0d0e21e | 531 | if (AvREAL(av)) |
3280af22 | 532 | *AvARRAY(av) = &PL_sv_undef; |
463ee0b2 LW |
533 | SvPVX(av) = (char*)(AvARRAY(av) + 1); |
534 | AvMAX(av)--; | |
93965878 | 535 | AvFILLp(av)--; |
8990e307 | 536 | if (SvSMAGICAL(av)) |
463ee0b2 | 537 | mg_set((SV*)av); |
79072805 LW |
538 | return retval; |
539 | } | |
540 | ||
541 | I32 | |
864dbfa3 | 542 | Perl_av_len(pTHX_ register AV *av) |
79072805 | 543 | { |
463ee0b2 | 544 | return AvFILL(av); |
79072805 LW |
545 | } |
546 | ||
547 | void | |
864dbfa3 | 548 | Perl_av_fill(pTHX_ register AV *av, I32 fill) |
79072805 | 549 | { |
93965878 | 550 | MAGIC *mg; |
a0d0e21e | 551 | if (!av) |
cea2e8a9 | 552 | Perl_croak(aTHX_ "panic: null array"); |
79072805 LW |
553 | if (fill < 0) |
554 | fill = -1; | |
33c27489 | 555 | if (mg = SvTIED_mg((SV*)av, 'P')) { |
93965878 NIS |
556 | dSP; |
557 | ENTER; | |
558 | SAVETMPS; | |
e788e7d3 | 559 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
560 | PUSHMARK(SP); |
561 | EXTEND(SP,2); | |
33c27489 | 562 | PUSHs(SvTIED_obj((SV*)av, mg)); |
a60c0954 | 563 | PUSHs(sv_2mortal(newSViv(fill+1))); |
93965878 | 564 | PUTBACK; |
864dbfa3 | 565 | call_method("STORESIZE", G_SCALAR|G_DISCARD); |
d3acc0f7 | 566 | POPSTACK; |
93965878 NIS |
567 | FREETMPS; |
568 | LEAVE; | |
569 | return; | |
570 | } | |
463ee0b2 | 571 | if (fill <= AvMAX(av)) { |
93965878 | 572 | I32 key = AvFILLp(av); |
a0d0e21e LW |
573 | SV** ary = AvARRAY(av); |
574 | ||
575 | if (AvREAL(av)) { | |
576 | while (key > fill) { | |
577 | SvREFCNT_dec(ary[key]); | |
3280af22 | 578 | ary[key--] = &PL_sv_undef; |
a0d0e21e LW |
579 | } |
580 | } | |
581 | else { | |
582 | while (key < fill) | |
3280af22 | 583 | ary[++key] = &PL_sv_undef; |
a0d0e21e LW |
584 | } |
585 | ||
93965878 | 586 | AvFILLp(av) = fill; |
8990e307 | 587 | if (SvSMAGICAL(av)) |
463ee0b2 LW |
588 | mg_set((SV*)av); |
589 | } | |
a0d0e21e | 590 | else |
3280af22 | 591 | (void)av_store(av,fill,&PL_sv_undef); |
79072805 | 592 | } |
c750a3ec | 593 | |
57079c46 GA |
594 | |
595 | /* AVHV: Support for treating arrays as if they were hashes. The | |
596 | * first element of the array should be a hash reference that maps | |
597 | * hash keys to array indices. | |
598 | */ | |
599 | ||
72311751 | 600 | STATIC I32 |
cea2e8a9 | 601 | S_avhv_index_sv(pTHX_ SV* sv) |
57079c46 GA |
602 | { |
603 | I32 index = SvIV(sv); | |
604 | if (index < 1) | |
cea2e8a9 | 605 | Perl_croak(aTHX_ "Bad index while coercing array into hash"); |
57079c46 GA |
606 | return index; |
607 | } | |
608 | ||
5d5aaa5e | 609 | HV* |
864dbfa3 | 610 | Perl_avhv_keys(pTHX_ AV *av) |
5d5aaa5e | 611 | { |
57079c46 | 612 | SV **keysp = av_fetch(av, 0, FALSE); |
5d5aaa5e | 613 | if (keysp) { |
d627ae4e MB |
614 | SV *sv = *keysp; |
615 | if (SvGMAGICAL(sv)) | |
616 | mg_get(sv); | |
617 | if (SvROK(sv)) { | |
618 | sv = SvRV(sv); | |
619 | if (SvTYPE(sv) == SVt_PVHV) | |
57079c46 | 620 | return (HV*)sv; |
5d5aaa5e JP |
621 | } |
622 | } | |
cea2e8a9 | 623 | Perl_croak(aTHX_ "Can't coerce array into hash"); |
72311751 | 624 | return Nullhv; |
c750a3ec MB |
625 | } |
626 | ||
627 | SV** | |
864dbfa3 | 628 | Perl_avhv_fetch_ent(pTHX_ AV *av, SV *keysv, I32 lval, U32 hash) |
97fcbf96 | 629 | { |
5d5aaa5e JP |
630 | SV **indsvp; |
631 | HV *keys = avhv_keys(av); | |
97fcbf96 | 632 | HE *he; |
5bc6513d | 633 | |
5d5aaa5e | 634 | he = hv_fetch_ent(keys, keysv, FALSE, hash); |
57079c46 | 635 | if (!he) |
cea2e8a9 | 636 | Perl_croak(aTHX_ "No such array field"); |
57079c46 | 637 | return av_fetch(av, avhv_index_sv(HeVAL(he)), lval); |
5bc6513d MB |
638 | } |
639 | ||
c750a3ec | 640 | bool |
864dbfa3 | 641 | Perl_avhv_exists_ent(pTHX_ AV *av, SV *keysv, U32 hash) |
97fcbf96 | 642 | { |
5d5aaa5e JP |
643 | HV *keys = avhv_keys(av); |
644 | return hv_exists_ent(keys, keysv, hash); | |
97fcbf96 MB |
645 | } |
646 | ||
c750a3ec | 647 | HE * |
864dbfa3 | 648 | Perl_avhv_iternext(pTHX_ AV *av) |
c750a3ec | 649 | { |
5d5aaa5e JP |
650 | HV *keys = avhv_keys(av); |
651 | return hv_iternext(keys); | |
c750a3ec MB |
652 | } |
653 | ||
654 | SV * | |
864dbfa3 | 655 | Perl_avhv_iterval(pTHX_ AV *av, register HE *entry) |
c750a3ec | 656 | { |
57079c46 GA |
657 | SV *sv = hv_iterval(avhv_keys(av), entry); |
658 | return *av_fetch(av, avhv_index_sv(sv), TRUE); | |
c750a3ec | 659 | } |