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