Commit | Line | Data |
a0d0e21e |
1 | /* av.c |
79072805 |
2 | * |
9607fc9c |
3 | * Copyright (c) 1991-1997, 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" |
16 | #include "perl.h" |
17 | |
fb73857a |
18 | void |
8ac85365 |
19 | av_reify(AV *av) |
a0d0e21e |
20 | { |
21 | I32 key; |
22 | SV* sv; |
fb73857a |
23 | |
3c78fafa |
24 | if (AvREAL(av)) |
25 | return; |
93965878 |
26 | #ifdef DEBUGGING |
33c27489 |
27 | if (SvTIED_mg((SV*)av, 'P')) |
93965878 |
28 | warn("av_reify called on tied array"); |
29 | #endif |
a0d0e21e |
30 | key = AvMAX(av) + 1; |
93965878 |
31 | while (key > AvFILLp(av) + 1) |
3280af22 |
32 | AvARRAY(av)[--key] = &PL_sv_undef; |
a0d0e21e |
33 | while (key) { |
34 | sv = AvARRAY(av)[--key]; |
35 | assert(sv); |
3280af22 |
36 | if (sv != &PL_sv_undef) { |
11343788 |
37 | dTHR; |
a0d0e21e |
38 | (void)SvREFCNT_inc(sv); |
11343788 |
39 | } |
a0d0e21e |
40 | } |
29de640a |
41 | key = AvARRAY(av) - AvALLOC(av); |
42 | while (key) |
3280af22 |
43 | AvALLOC(av)[--key] = &PL_sv_undef; |
62b1ebc2 |
44 | AvREIFY_off(av); |
a0d0e21e |
45 | AvREAL_on(av); |
46 | } |
47 | |
48 | void |
8ac85365 |
49 | av_extend(AV *av, I32 key) |
a0d0e21e |
50 | { |
11343788 |
51 | dTHR; /* only necessary if we have to extend stack */ |
93965878 |
52 | MAGIC *mg; |
33c27489 |
53 | if (mg = SvTIED_mg((SV*)av, 'P')) { |
93965878 |
54 | dSP; |
55 | ENTER; |
56 | SAVETMPS; |
e788e7d3 |
57 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
58 | PUSHMARK(SP); |
59 | EXTEND(SP,2); |
33c27489 |
60 | PUSHs(SvTIED_obj((SV*)av, mg)); |
a60c0954 |
61 | PUSHs(sv_2mortal(newSViv(key+1))); |
93965878 |
62 | PUTBACK; |
63 | perl_call_method("EXTEND", G_SCALAR|G_DISCARD); |
d3acc0f7 |
64 | POPSTACK; |
93965878 |
65 | FREETMPS; |
66 | LEAVE; |
67 | return; |
68 | } |
a0d0e21e |
69 | if (key > AvMAX(av)) { |
70 | SV** ary; |
71 | I32 tmp; |
72 | I32 newmax; |
73 | |
74 | if (AvALLOC(av) != AvARRAY(av)) { |
93965878 |
75 | ary = AvALLOC(av) + AvFILLp(av) + 1; |
a0d0e21e |
76 | tmp = AvARRAY(av) - AvALLOC(av); |
93965878 |
77 | Move(AvARRAY(av), AvALLOC(av), AvFILLp(av)+1, SV*); |
a0d0e21e |
78 | AvMAX(av) += tmp; |
79 | SvPVX(av) = (char*)AvALLOC(av); |
80 | if (AvREAL(av)) { |
81 | while (tmp) |
3280af22 |
82 | ary[--tmp] = &PL_sv_undef; |
a0d0e21e |
83 | } |
84 | |
85 | if (key > AvMAX(av) - 10) { |
86 | newmax = key + AvMAX(av); |
87 | goto resize; |
88 | } |
89 | } |
90 | else { |
91 | if (AvALLOC(av)) { |
c07a80fd |
92 | #ifndef STRANGE_MALLOC |
4633a7c4 |
93 | U32 bytes; |
c07a80fd |
94 | #endif |
4633a7c4 |
95 | |
1fe09876 |
96 | #if defined(MYMALLOC) && !defined(PURIFY) && !defined(LEAKTEST) |
8d6dde3e |
97 | newmax = malloced_size((void*)AvALLOC(av))/sizeof(SV*) - 1; |
98 | |
99 | if (key <= newmax) |
100 | goto resized; |
101 | #endif |
a0d0e21e |
102 | newmax = key + AvMAX(av) / 5; |
103 | resize: |
8d6dde3e |
104 | #if defined(STRANGE_MALLOC) || defined(MYMALLOC) |
a0d0e21e |
105 | Renew(AvALLOC(av),newmax+1, SV*); |
4633a7c4 |
106 | #else |
107 | bytes = (newmax + 1) * sizeof(SV*); |
108 | #define MALLOC_OVERHEAD 16 |
109 | tmp = MALLOC_OVERHEAD; |
110 | while (tmp - MALLOC_OVERHEAD < bytes) |
111 | tmp += tmp; |
112 | tmp -= MALLOC_OVERHEAD; |
113 | tmp /= sizeof(SV*); |
114 | assert(tmp > newmax); |
115 | newmax = tmp - 1; |
116 | New(2,ary, newmax+1, SV*); |
117 | Copy(AvALLOC(av), ary, AvMAX(av)+1, SV*); |
fba3b22e |
118 | if (AvMAX(av) > 64) |
119 | offer_nice_chunk(AvALLOC(av), (AvMAX(av)+1) * sizeof(SV*)); |
4633a7c4 |
120 | else |
121 | Safefree(AvALLOC(av)); |
122 | AvALLOC(av) = ary; |
123 | #endif |
8d6dde3e |
124 | resized: |
a0d0e21e |
125 | ary = AvALLOC(av) + AvMAX(av) + 1; |
126 | tmp = newmax - AvMAX(av); |
3280af22 |
127 | if (av == PL_curstack) { /* Oops, grew stack (via av_store()?) */ |
128 | PL_stack_sp = AvALLOC(av) + (PL_stack_sp - PL_stack_base); |
129 | PL_stack_base = AvALLOC(av); |
130 | PL_stack_max = PL_stack_base + newmax; |
a0d0e21e |
131 | } |
132 | } |
133 | else { |
8d6dde3e |
134 | newmax = key < 3 ? 3 : key; |
a0d0e21e |
135 | New(2,AvALLOC(av), newmax+1, SV*); |
136 | ary = AvALLOC(av) + 1; |
137 | tmp = newmax; |
3280af22 |
138 | AvALLOC(av)[0] = &PL_sv_undef; /* For the stacks */ |
a0d0e21e |
139 | } |
140 | if (AvREAL(av)) { |
141 | while (tmp) |
3280af22 |
142 | ary[--tmp] = &PL_sv_undef; |
a0d0e21e |
143 | } |
144 | |
145 | SvPVX(av) = (char*)AvALLOC(av); |
146 | AvMAX(av) = newmax; |
147 | } |
148 | } |
149 | } |
150 | |
79072805 |
151 | SV** |
8ac85365 |
152 | av_fetch(register AV *av, I32 key, I32 lval) |
79072805 |
153 | { |
154 | SV *sv; |
155 | |
a0d0e21e |
156 | if (!av) |
157 | return 0; |
158 | |
93965878 |
159 | if (key < 0) { |
160 | key += AvFILL(av) + 1; |
161 | if (key < 0) |
162 | return 0; |
163 | } |
164 | |
8990e307 |
165 | if (SvRMAGICAL(av)) { |
6cef1e77 |
166 | if (mg_find((SV*)av,'P') || mg_find((SV*)av,'D')) { |
11343788 |
167 | dTHR; |
8990e307 |
168 | sv = sv_newmortal(); |
463ee0b2 |
169 | mg_copy((SV*)av, sv, 0, key); |
3280af22 |
170 | PL_av_fetch_sv = sv; |
171 | return &PL_av_fetch_sv; |
463ee0b2 |
172 | } |
173 | } |
174 | |
93965878 |
175 | if (key > AvFILLp(av)) { |
a0d0e21e |
176 | if (!lval) |
177 | return 0; |
178 | if (AvREALISH(av)) |
179 | sv = NEWSV(5,0); |
180 | else |
181 | sv = sv_newmortal(); |
182 | return av_store(av,key,sv); |
79072805 |
183 | } |
3280af22 |
184 | if (AvARRAY(av)[key] == &PL_sv_undef) { |
4dbf4341 |
185 | emptyness: |
79072805 |
186 | if (lval) { |
187 | sv = NEWSV(6,0); |
463ee0b2 |
188 | return av_store(av,key,sv); |
79072805 |
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 |
199 | } |
200 | |
201 | SV** |
8ac85365 |
202 | av_store(register AV *av, I32 key, SV *val) |
79072805 |
203 | { |
79072805 |
204 | SV** ary; |
93965878 |
205 | U32 fill; |
206 | |
79072805 |
207 | |
a0d0e21e |
208 | if (!av) |
209 | return 0; |
43fcc5d2 |
210 | if (!val) |
3280af22 |
211 | val = &PL_sv_undef; |
463ee0b2 |
212 | |
a0d0e21e |
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)) |
22c35a8c |
220 | croak(PL_no_modify); |
93965878 |
221 | |
222 | if (SvRMAGICAL(av)) { |
223 | if (mg_find((SV*)av,'P')) { |
3280af22 |
224 | if (val != &PL_sv_undef) { |
93965878 |
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 |
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 |
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 |
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 |
252 | MAGIC* mg = SvMAGIC(av); |
253 | sv_magic(val, (SV*)av, toLOWER(mg->mg_type), 0, key); |
254 | } |
463ee0b2 |
255 | mg_set((SV*)av); |
256 | } |
79072805 |
257 | return &ary[key]; |
258 | } |
259 | |
260 | AV * |
8ac85365 |
261 | newAV(void) |
79072805 |
262 | { |
463ee0b2 |
263 | register AV *av; |
79072805 |
264 | |
a0d0e21e |
265 | av = (AV*)NEWSV(3,0); |
266 | sv_upgrade((SV *)av, SVt_PVAV); |
463ee0b2 |
267 | AvREAL_on(av); |
268 | AvALLOC(av) = 0; |
269 | SvPVX(av) = 0; |
93965878 |
270 | AvMAX(av) = AvFILLp(av) = -1; |
463ee0b2 |
271 | return av; |
79072805 |
272 | } |
273 | |
274 | AV * |
8ac85365 |
275 | av_make(register I32 size, register SV **strp) |
79072805 |
276 | { |
463ee0b2 |
277 | register AV *av; |
79072805 |
278 | register I32 i; |
279 | register SV** ary; |
280 | |
a0d0e21e |
281 | av = (AV*)NEWSV(8,0); |
282 | sv_upgrade((SV *) av,SVt_PVAV); |
a0d0e21e |
283 | AvFLAGS(av) = AVf_REAL; |
573fa4ea |
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 |
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 |
298 | } |
299 | |
300 | AV * |
8ac85365 |
301 | av_fake(register I32 size, register SV **strp) |
79072805 |
302 | { |
463ee0b2 |
303 | register AV *av; |
79072805 |
304 | register SV** ary; |
305 | |
a0d0e21e |
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 |
316 | assert (*strp); |
317 | SvTEMP_off(*strp); |
79072805 |
318 | strp++; |
319 | } |
463ee0b2 |
320 | return av; |
79072805 |
321 | } |
322 | |
323 | void |
8ac85365 |
324 | av_clear(register AV *av) |
79072805 |
325 | { |
326 | register I32 key; |
a0d0e21e |
327 | SV** ary; |
79072805 |
328 | |
7d55f622 |
329 | #ifdef DEBUGGING |
330 | if (SvREFCNT(av) <= 0) { |
331 | warn("Attempt to clear deleted array"); |
332 | } |
333 | #endif |
a60c0954 |
334 | if (!av) |
79072805 |
335 | return; |
336 | /*SUPPRESS 560*/ |
a0d0e21e |
337 | |
39caa665 |
338 | if (SvREADONLY(av)) |
22c35a8c |
339 | croak(PL_no_modify); |
39caa665 |
340 | |
93965878 |
341 | /* Give any tie a chance to cleanup first */ |
342 | if (SvRMAGICAL(av)) |
343 | mg_clear((SV*)av); |
344 | |
a60c0954 |
345 | if (AvMAX(av) < 0) |
346 | return; |
347 | |
a0d0e21e |
348 | if (AvREAL(av)) { |
349 | ary = AvARRAY(av); |
93965878 |
350 | key = AvFILLp(av) + 1; |
a0d0e21e |
351 | while (key) { |
352 | SvREFCNT_dec(ary[--key]); |
3280af22 |
353 | ary[key] = &PL_sv_undef; |
a0d0e21e |
354 | } |
355 | } |
463ee0b2 |
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 |
362 | } |
363 | |
364 | void |
8ac85365 |
365 | av_undef(register AV *av) |
79072805 |
366 | { |
367 | register I32 key; |
368 | |
463ee0b2 |
369 | if (!av) |
79072805 |
370 | return; |
371 | /*SUPPRESS 560*/ |
93965878 |
372 | |
373 | /* Give any tie a chance to cleanup first */ |
33c27489 |
374 | if (SvTIED_mg((SV*)av, 'P')) |
93965878 |
375 | av_fill(av, -1); /* mg_clear() ? */ |
376 | |
a0d0e21e |
377 | if (AvREAL(av)) { |
93965878 |
378 | key = AvFILLp(av) + 1; |
a0d0e21e |
379 | while (key) |
380 | SvREFCNT_dec(AvARRAY(av)[--key]); |
381 | } |
463ee0b2 |
382 | Safefree(AvALLOC(av)); |
383 | AvALLOC(av) = 0; |
384 | SvPVX(av) = 0; |
93965878 |
385 | AvMAX(av) = AvFILLp(av) = -1; |
748a9306 |
386 | if (AvARYLEN(av)) { |
387 | SvREFCNT_dec(AvARYLEN(av)); |
388 | AvARYLEN(av) = 0; |
389 | } |
79072805 |
390 | } |
391 | |
a0d0e21e |
392 | void |
8ac85365 |
393 | av_push(register AV *av, SV *val) |
93965878 |
394 | { |
395 | MAGIC *mg; |
a0d0e21e |
396 | if (!av) |
397 | return; |
93965878 |
398 | if (SvREADONLY(av)) |
22c35a8c |
399 | croak(PL_no_modify); |
93965878 |
400 | |
33c27489 |
401 | if (mg = SvTIED_mg((SV*)av, 'P')) { |
93965878 |
402 | dSP; |
e788e7d3 |
403 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
404 | PUSHMARK(SP); |
405 | EXTEND(SP,2); |
33c27489 |
406 | PUSHs(SvTIED_obj((SV*)av, mg)); |
93965878 |
407 | PUSHs(val); |
a60c0954 |
408 | PUTBACK; |
409 | ENTER; |
93965878 |
410 | perl_call_method("PUSH", G_SCALAR|G_DISCARD); |
a60c0954 |
411 | LEAVE; |
d3acc0f7 |
412 | POPSTACK; |
93965878 |
413 | return; |
414 | } |
415 | av_store(av,AvFILLp(av)+1,val); |
79072805 |
416 | } |
417 | |
418 | SV * |
8ac85365 |
419 | av_pop(register AV *av) |
79072805 |
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)) |
22c35a8c |
427 | croak(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 |
433 | PUTBACK; |
434 | ENTER; |
93965878 |
435 | if (perl_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 |
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 |
448 | return retval; |
449 | } |
450 | |
451 | void |
8ac85365 |
452 | av_unshift(register AV *av, register I32 num) |
79072805 |
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)) |
22c35a8c |
461 | croak(PL_no_modify); |
93965878 |
462 | |
33c27489 |
463 | if (mg = SvTIED_mg((SV*)av, 'P')) { |
93965878 |
464 | dSP; |
e788e7d3 |
465 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
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 |
471 | } |
472 | PUTBACK; |
a60c0954 |
473 | ENTER; |
93965878 |
474 | perl_call_method("UNSHIFT", G_SCALAR|G_DISCARD); |
a60c0954 |
475 | LEAVE; |
d3acc0f7 |
476 | POPSTACK; |
93965878 |
477 | return; |
478 | } |
479 | |
49beac48 |
480 | if (!AvREAL(av) && AvREIFY(av)) |
481 | av_reify(av); |
a0d0e21e |
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 |
490 | SvPVX(av) = (char*)(AvARRAY(av) - i); |
491 | } |
d2719217 |
492 | if (num) { |
67a38de0 |
493 | i = AvFILLp(av); |
494 | av_extend(av, i + num); |
93965878 |
495 | AvFILLp(av) += num; |
67a38de0 |
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 |
501 | } |
502 | } |
503 | |
504 | SV * |
8ac85365 |
505 | av_shift(register AV *av) |
79072805 |
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)) |
22c35a8c |
513 | croak(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 |
519 | PUTBACK; |
520 | ENTER; |
93965878 |
521 | if (perl_call_method("SHIFT", G_SCALAR)) { |
3280af22 |
522 | retval = newSVsv(*PL_stack_sp--); |
93965878 |
523 | } else { |
3280af22 |
524 | retval = &PL_sv_undef; |
a60c0954 |
525 | } |
526 | LEAVE; |
d3acc0f7 |
527 | POPSTACK; |
93965878 |
528 | return retval; |
529 | } |
463ee0b2 |
530 | retval = *AvARRAY(av); |
a0d0e21e |
531 | if (AvREAL(av)) |
3280af22 |
532 | *AvARRAY(av) = &PL_sv_undef; |
463ee0b2 |
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 |
538 | return retval; |
539 | } |
540 | |
541 | I32 |
8ac85365 |
542 | av_len(register AV *av) |
79072805 |
543 | { |
463ee0b2 |
544 | return AvFILL(av); |
79072805 |
545 | } |
546 | |
547 | void |
8ac85365 |
548 | av_fill(register AV *av, I32 fill) |
79072805 |
549 | { |
93965878 |
550 | MAGIC *mg; |
a0d0e21e |
551 | if (!av) |
552 | croak("panic: null array"); |
79072805 |
553 | if (fill < 0) |
554 | fill = -1; |
33c27489 |
555 | if (mg = SvTIED_mg((SV*)av, 'P')) { |
93965878 |
556 | dSP; |
557 | ENTER; |
558 | SAVETMPS; |
e788e7d3 |
559 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
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; |
565 | perl_call_method("STORESIZE", G_SCALAR|G_DISCARD); |
d3acc0f7 |
566 | POPSTACK; |
93965878 |
567 | FREETMPS; |
568 | LEAVE; |
569 | return; |
570 | } |
463ee0b2 |
571 | if (fill <= AvMAX(av)) { |
93965878 |
572 | I32 key = AvFILLp(av); |
a0d0e21e |
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 |
579 | } |
580 | } |
581 | else { |
582 | while (key < fill) |
3280af22 |
583 | ary[++key] = &PL_sv_undef; |
a0d0e21e |
584 | } |
585 | |
93965878 |
586 | AvFILLp(av) = fill; |
8990e307 |
587 | if (SvSMAGICAL(av)) |
463ee0b2 |
588 | mg_set((SV*)av); |
589 | } |
a0d0e21e |
590 | else |
3280af22 |
591 | (void)av_store(av,fill,&PL_sv_undef); |
79072805 |
592 | } |
c750a3ec |
593 | |
57079c46 |
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 |
57079c46 |
601 | avhv_index_sv(SV* sv) |
602 | { |
603 | I32 index = SvIV(sv); |
604 | if (index < 1) |
605 | croak("Bad index while coercing array into hash"); |
606 | return index; |
607 | } |
608 | |
5d5aaa5e |
609 | HV* |
610 | avhv_keys(AV *av) |
611 | { |
57079c46 |
612 | SV **keysp = av_fetch(av, 0, FALSE); |
5d5aaa5e |
613 | if (keysp) { |
d627ae4e |
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 |
621 | } |
622 | } |
57079c46 |
623 | croak("Can't coerce array into hash"); |
72311751 |
624 | return Nullhv; |
c750a3ec |
625 | } |
626 | |
627 | SV** |
8ac85365 |
628 | avhv_fetch_ent(AV *av, SV *keysv, I32 lval, U32 hash) |
97fcbf96 |
629 | { |
5d5aaa5e |
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) |
636 | croak("No such array field"); |
637 | return av_fetch(av, avhv_index_sv(HeVAL(he)), lval); |
5bc6513d |
638 | } |
639 | |
c750a3ec |
640 | bool |
8ac85365 |
641 | avhv_exists_ent(AV *av, SV *keysv, U32 hash) |
97fcbf96 |
642 | { |
5d5aaa5e |
643 | HV *keys = avhv_keys(av); |
644 | return hv_exists_ent(keys, keysv, hash); |
97fcbf96 |
645 | } |
646 | |
c750a3ec |
647 | HE * |
8ac85365 |
648 | avhv_iternext(AV *av) |
c750a3ec |
649 | { |
5d5aaa5e |
650 | HV *keys = avhv_keys(av); |
651 | return hv_iternext(keys); |
c750a3ec |
652 | } |
653 | |
654 | SV * |
8ac85365 |
655 | avhv_iterval(AV *av, register HE *entry) |
c750a3ec |
656 | { |
57079c46 |
657 | SV *sv = hv_iterval(avhv_keys(av), entry); |
658 | return *av_fetch(av, avhv_index_sv(sv), TRUE); |
c750a3ec |
659 | } |