Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* av.c |
79072805 | 2 | * |
9607fc9c | 3 | * Copyright (c) 1991-1997, 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" | |
16 | #include "perl.h" | |
17 | ||
fb73857a | 18 | void |
8ac85365 | 19 | av_reify(AV *av) |
a0d0e21e LW |
20 | { |
21 | I32 key; | |
22 | SV* sv; | |
fb73857a | 23 | |
3c78fafa GS |
24 | if (AvREAL(av)) |
25 | return; | |
93965878 | 26 | #ifdef DEBUGGING |
3c78fafa | 27 | if (SvRMAGICAL(av) && mg_find((SV*)av,'P')) |
93965878 NIS |
28 | warn("av_reify called on tied array"); |
29 | #endif | |
a0d0e21e | 30 | key = AvMAX(av) + 1; |
93965878 | 31 | while (key > AvFILLp(av) + 1) |
a0d0e21e LW |
32 | AvARRAY(av)[--key] = &sv_undef; |
33 | while (key) { | |
34 | sv = AvARRAY(av)[--key]; | |
35 | assert(sv); | |
11343788 MB |
36 | if (sv != &sv_undef) { |
37 | dTHR; | |
a0d0e21e | 38 | (void)SvREFCNT_inc(sv); |
11343788 | 39 | } |
a0d0e21e | 40 | } |
29de640a CS |
41 | key = AvARRAY(av) - AvALLOC(av); |
42 | while (key) | |
43 | AvALLOC(av)[--key] = &sv_undef; | |
a0d0e21e LW |
44 | AvREAL_on(av); |
45 | } | |
46 | ||
47 | void | |
8ac85365 | 48 | av_extend(AV *av, I32 key) |
a0d0e21e | 49 | { |
11343788 | 50 | dTHR; /* only necessary if we have to extend stack */ |
93965878 NIS |
51 | MAGIC *mg; |
52 | if (SvRMAGICAL(av) && (mg = mg_find((SV*)av,'P'))) { | |
53 | dSP; | |
54 | ENTER; | |
55 | SAVETMPS; | |
e788e7d3 | 56 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
57 | PUSHMARK(SP); |
58 | EXTEND(SP,2); | |
93965878 | 59 | PUSHs(mg->mg_obj); |
a60c0954 | 60 | PUSHs(sv_2mortal(newSViv(key+1))); |
93965878 NIS |
61 | PUTBACK; |
62 | perl_call_method("EXTEND", G_SCALAR|G_DISCARD); | |
d3acc0f7 | 63 | POPSTACK; |
93965878 NIS |
64 | FREETMPS; |
65 | LEAVE; | |
66 | return; | |
67 | } | |
a0d0e21e LW |
68 | if (key > AvMAX(av)) { |
69 | SV** ary; | |
70 | I32 tmp; | |
71 | I32 newmax; | |
72 | ||
73 | if (AvALLOC(av) != AvARRAY(av)) { | |
93965878 | 74 | ary = AvALLOC(av) + AvFILLp(av) + 1; |
a0d0e21e | 75 | tmp = AvARRAY(av) - AvALLOC(av); |
93965878 | 76 | Move(AvARRAY(av), AvALLOC(av), AvFILLp(av)+1, SV*); |
a0d0e21e LW |
77 | AvMAX(av) += tmp; |
78 | SvPVX(av) = (char*)AvALLOC(av); | |
79 | if (AvREAL(av)) { | |
80 | while (tmp) | |
81 | ary[--tmp] = &sv_undef; | |
82 | } | |
83 | ||
84 | if (key > AvMAX(av) - 10) { | |
85 | newmax = key + AvMAX(av); | |
86 | goto resize; | |
87 | } | |
88 | } | |
89 | else { | |
90 | if (AvALLOC(av)) { | |
c07a80fd | 91 | #ifndef STRANGE_MALLOC |
4633a7c4 | 92 | U32 bytes; |
c07a80fd | 93 | #endif |
4633a7c4 | 94 | |
c70c8a0a | 95 | #if defined(MYMALLOC) && !defined(PURIFY) |
8d6dde3e IZ |
96 | newmax = malloced_size((void*)AvALLOC(av))/sizeof(SV*) - 1; |
97 | ||
98 | if (key <= newmax) | |
99 | goto resized; | |
100 | #endif | |
a0d0e21e LW |
101 | newmax = key + AvMAX(av) / 5; |
102 | resize: | |
8d6dde3e | 103 | #if defined(STRANGE_MALLOC) || defined(MYMALLOC) |
a0d0e21e | 104 | Renew(AvALLOC(av),newmax+1, SV*); |
4633a7c4 LW |
105 | #else |
106 | bytes = (newmax + 1) * sizeof(SV*); | |
107 | #define MALLOC_OVERHEAD 16 | |
108 | tmp = MALLOC_OVERHEAD; | |
109 | while (tmp - MALLOC_OVERHEAD < bytes) | |
110 | tmp += tmp; | |
111 | tmp -= MALLOC_OVERHEAD; | |
112 | tmp /= sizeof(SV*); | |
113 | assert(tmp > newmax); | |
114 | newmax = tmp - 1; | |
115 | New(2,ary, newmax+1, SV*); | |
116 | Copy(AvALLOC(av), ary, AvMAX(av)+1, SV*); | |
fba3b22e MB |
117 | if (AvMAX(av) > 64) |
118 | offer_nice_chunk(AvALLOC(av), (AvMAX(av)+1) * sizeof(SV*)); | |
4633a7c4 LW |
119 | else |
120 | Safefree(AvALLOC(av)); | |
121 | AvALLOC(av) = ary; | |
122 | #endif | |
8d6dde3e | 123 | resized: |
a0d0e21e LW |
124 | ary = AvALLOC(av) + AvMAX(av) + 1; |
125 | tmp = newmax - AvMAX(av); | |
7d55f622 | 126 | if (av == curstack) { /* Oops, grew stack (via av_store()?) */ |
a0d0e21e LW |
127 | stack_sp = AvALLOC(av) + (stack_sp - stack_base); |
128 | stack_base = AvALLOC(av); | |
129 | stack_max = stack_base + newmax; | |
130 | } | |
131 | } | |
132 | else { | |
8d6dde3e | 133 | newmax = key < 3 ? 3 : key; |
a0d0e21e LW |
134 | New(2,AvALLOC(av), newmax+1, SV*); |
135 | ary = AvALLOC(av) + 1; | |
136 | tmp = newmax; | |
137 | AvALLOC(av)[0] = &sv_undef; /* For the stacks */ | |
138 | } | |
139 | if (AvREAL(av)) { | |
140 | while (tmp) | |
141 | ary[--tmp] = &sv_undef; | |
142 | } | |
143 | ||
144 | SvPVX(av) = (char*)AvALLOC(av); | |
145 | AvMAX(av) = newmax; | |
146 | } | |
147 | } | |
148 | } | |
149 | ||
79072805 | 150 | SV** |
8ac85365 | 151 | av_fetch(register AV *av, I32 key, I32 lval) |
79072805 LW |
152 | { |
153 | SV *sv; | |
154 | ||
a0d0e21e LW |
155 | if (!av) |
156 | return 0; | |
157 | ||
93965878 NIS |
158 | if (key < 0) { |
159 | key += AvFILL(av) + 1; | |
160 | if (key < 0) | |
161 | return 0; | |
162 | } | |
163 | ||
8990e307 | 164 | if (SvRMAGICAL(av)) { |
463ee0b2 | 165 | if (mg_find((SV*)av,'P')) { |
11343788 | 166 | dTHR; |
8990e307 | 167 | sv = sv_newmortal(); |
463ee0b2 | 168 | mg_copy((SV*)av, sv, 0, key); |
4e4c362e GS |
169 | av_fetch_sv = sv; |
170 | return &av_fetch_sv; | |
463ee0b2 LW |
171 | } |
172 | } | |
173 | ||
93965878 | 174 | if (key > AvFILLp(av)) { |
a0d0e21e LW |
175 | if (!lval) |
176 | return 0; | |
177 | if (AvREALISH(av)) | |
178 | sv = NEWSV(5,0); | |
179 | else | |
180 | sv = sv_newmortal(); | |
181 | return av_store(av,key,sv); | |
79072805 | 182 | } |
a0d0e21e | 183 | if (AvARRAY(av)[key] == &sv_undef) { |
4dbf4341 | 184 | emptyness: |
79072805 LW |
185 | if (lval) { |
186 | sv = NEWSV(6,0); | |
463ee0b2 | 187 | return av_store(av,key,sv); |
79072805 LW |
188 | } |
189 | return 0; | |
190 | } | |
4dbf4341 | 191 | else if (AvREIFY(av) |
192 | && (!AvARRAY(av)[key] /* eg. @_ could have freed elts */ | |
193 | || SvTYPE(AvARRAY(av)[key]) == SVTYPEMASK)) { | |
194 | AvARRAY(av)[key] = &sv_undef; /* 1/2 reify */ | |
195 | goto emptyness; | |
196 | } | |
463ee0b2 | 197 | return &AvARRAY(av)[key]; |
79072805 LW |
198 | } |
199 | ||
200 | SV** | |
8ac85365 | 201 | av_store(register AV *av, I32 key, SV *val) |
79072805 | 202 | { |
79072805 | 203 | SV** ary; |
93965878 NIS |
204 | U32 fill; |
205 | ||
79072805 | 206 | |
a0d0e21e LW |
207 | if (!av) |
208 | return 0; | |
43fcc5d2 CS |
209 | if (!val) |
210 | val = &sv_undef; | |
463ee0b2 | 211 | |
a0d0e21e LW |
212 | if (key < 0) { |
213 | key += AvFILL(av) + 1; | |
214 | if (key < 0) | |
215 | return 0; | |
79072805 | 216 | } |
93965878 | 217 | |
43fcc5d2 CS |
218 | if (SvREADONLY(av) && key >= AvFILL(av)) |
219 | croak(no_modify); | |
93965878 NIS |
220 | |
221 | if (SvRMAGICAL(av)) { | |
222 | if (mg_find((SV*)av,'P')) { | |
223 | if (val != &sv_undef) { | |
224 | mg_copy((SV*)av, val, 0, key); | |
225 | } | |
226 | return 0; | |
227 | } | |
228 | } | |
229 | ||
49beac48 | 230 | if (!AvREAL(av) && AvREIFY(av)) |
a0d0e21e | 231 | av_reify(av); |
a0d0e21e LW |
232 | if (key > AvMAX(av)) |
233 | av_extend(av,key); | |
463ee0b2 | 234 | ary = AvARRAY(av); |
93965878 | 235 | if (AvFILLp(av) < key) { |
a0d0e21e | 236 | if (!AvREAL(av)) { |
11343788 | 237 | dTHR; |
7d55f622 | 238 | if (av == curstack && key > stack_sp - stack_base) |
a0d0e21e LW |
239 | stack_sp = stack_base + key; /* XPUSH in disguise */ |
240 | do | |
93965878 NIS |
241 | ary[++AvFILLp(av)] = &sv_undef; |
242 | while (AvFILLp(av) < key); | |
79072805 | 243 | } |
93965878 | 244 | AvFILLp(av) = key; |
79072805 | 245 | } |
a0d0e21e LW |
246 | else if (AvREAL(av)) |
247 | SvREFCNT_dec(ary[key]); | |
79072805 | 248 | ary[key] = val; |
8990e307 | 249 | if (SvSMAGICAL(av)) { |
a0d0e21e LW |
250 | if (val != &sv_undef) { |
251 | MAGIC* mg = SvMAGIC(av); | |
252 | sv_magic(val, (SV*)av, toLOWER(mg->mg_type), 0, key); | |
253 | } | |
463ee0b2 LW |
254 | mg_set((SV*)av); |
255 | } | |
79072805 LW |
256 | return &ary[key]; |
257 | } | |
258 | ||
259 | AV * | |
8ac85365 | 260 | newAV(void) |
79072805 | 261 | { |
463ee0b2 | 262 | register AV *av; |
79072805 | 263 | |
a0d0e21e LW |
264 | av = (AV*)NEWSV(3,0); |
265 | sv_upgrade((SV *)av, SVt_PVAV); | |
463ee0b2 LW |
266 | AvREAL_on(av); |
267 | AvALLOC(av) = 0; | |
268 | SvPVX(av) = 0; | |
93965878 | 269 | AvMAX(av) = AvFILLp(av) = -1; |
463ee0b2 | 270 | return av; |
79072805 LW |
271 | } |
272 | ||
273 | AV * | |
8ac85365 | 274 | av_make(register I32 size, register SV **strp) |
79072805 | 275 | { |
463ee0b2 | 276 | register AV *av; |
79072805 LW |
277 | register I32 i; |
278 | register SV** ary; | |
279 | ||
a0d0e21e LW |
280 | av = (AV*)NEWSV(8,0); |
281 | sv_upgrade((SV *) av,SVt_PVAV); | |
a0d0e21e | 282 | AvFLAGS(av) = AVf_REAL; |
573fa4ea TB |
283 | if (size) { /* `defined' was returning undef for size==0 anyway. */ |
284 | New(4,ary,size,SV*); | |
285 | AvALLOC(av) = ary; | |
286 | SvPVX(av) = (char*)ary; | |
93965878 | 287 | AvFILLp(av) = size - 1; |
573fa4ea TB |
288 | AvMAX(av) = size - 1; |
289 | for (i = 0; i < size; i++) { | |
290 | assert (*strp); | |
291 | ary[i] = NEWSV(7,0); | |
292 | sv_setsv(ary[i], *strp); | |
293 | strp++; | |
294 | } | |
79072805 | 295 | } |
463ee0b2 | 296 | return av; |
79072805 LW |
297 | } |
298 | ||
299 | AV * | |
8ac85365 | 300 | av_fake(register I32 size, register SV **strp) |
79072805 | 301 | { |
463ee0b2 | 302 | register AV *av; |
79072805 LW |
303 | register SV** ary; |
304 | ||
a0d0e21e LW |
305 | av = (AV*)NEWSV(9,0); |
306 | sv_upgrade((SV *)av, SVt_PVAV); | |
79072805 | 307 | New(4,ary,size+1,SV*); |
463ee0b2 | 308 | AvALLOC(av) = ary; |
79072805 | 309 | Copy(strp,ary,size,SV*); |
a0d0e21e | 310 | AvFLAGS(av) = AVf_REIFY; |
463ee0b2 | 311 | SvPVX(av) = (char*)ary; |
93965878 | 312 | AvFILLp(av) = size - 1; |
463ee0b2 | 313 | AvMAX(av) = size - 1; |
79072805 | 314 | while (size--) { |
a0d0e21e LW |
315 | assert (*strp); |
316 | SvTEMP_off(*strp); | |
79072805 LW |
317 | strp++; |
318 | } | |
463ee0b2 | 319 | return av; |
79072805 LW |
320 | } |
321 | ||
322 | void | |
8ac85365 | 323 | av_clear(register AV *av) |
79072805 LW |
324 | { |
325 | register I32 key; | |
a0d0e21e | 326 | SV** ary; |
79072805 | 327 | |
7d55f622 | 328 | #ifdef DEBUGGING |
329 | if (SvREFCNT(av) <= 0) { | |
330 | warn("Attempt to clear deleted array"); | |
331 | } | |
332 | #endif | |
a60c0954 | 333 | if (!av) |
79072805 LW |
334 | return; |
335 | /*SUPPRESS 560*/ | |
a0d0e21e | 336 | |
39caa665 JP |
337 | if (SvREADONLY(av)) |
338 | croak(no_modify); | |
339 | ||
93965878 NIS |
340 | /* Give any tie a chance to cleanup first */ |
341 | if (SvRMAGICAL(av)) | |
342 | mg_clear((SV*)av); | |
343 | ||
a60c0954 NIS |
344 | if (AvMAX(av) < 0) |
345 | return; | |
346 | ||
a0d0e21e LW |
347 | if (AvREAL(av)) { |
348 | ary = AvARRAY(av); | |
93965878 | 349 | key = AvFILLp(av) + 1; |
a0d0e21e LW |
350 | while (key) { |
351 | SvREFCNT_dec(ary[--key]); | |
352 | ary[key] = &sv_undef; | |
353 | } | |
354 | } | |
463ee0b2 LW |
355 | if (key = AvARRAY(av) - AvALLOC(av)) { |
356 | AvMAX(av) += key; | |
a0d0e21e | 357 | SvPVX(av) = (char*)AvALLOC(av); |
79072805 | 358 | } |
93965878 | 359 | AvFILLp(av) = -1; |
fb73857a | 360 | |
79072805 LW |
361 | } |
362 | ||
363 | void | |
8ac85365 | 364 | av_undef(register AV *av) |
79072805 LW |
365 | { |
366 | register I32 key; | |
367 | ||
463ee0b2 | 368 | if (!av) |
79072805 LW |
369 | return; |
370 | /*SUPPRESS 560*/ | |
93965878 NIS |
371 | |
372 | /* Give any tie a chance to cleanup first */ | |
373 | if (SvRMAGICAL(av) && mg_find((SV*)av,'P')) | |
374 | av_fill(av, -1); /* mg_clear() ? */ | |
375 | ||
a0d0e21e | 376 | if (AvREAL(av)) { |
93965878 | 377 | key = AvFILLp(av) + 1; |
a0d0e21e LW |
378 | while (key) |
379 | SvREFCNT_dec(AvARRAY(av)[--key]); | |
380 | } | |
463ee0b2 LW |
381 | Safefree(AvALLOC(av)); |
382 | AvALLOC(av) = 0; | |
383 | SvPVX(av) = 0; | |
93965878 | 384 | AvMAX(av) = AvFILLp(av) = -1; |
748a9306 LW |
385 | if (AvARYLEN(av)) { |
386 | SvREFCNT_dec(AvARYLEN(av)); | |
387 | AvARYLEN(av) = 0; | |
388 | } | |
79072805 LW |
389 | } |
390 | ||
a0d0e21e | 391 | void |
8ac85365 | 392 | av_push(register AV *av, SV *val) |
93965878 NIS |
393 | { |
394 | MAGIC *mg; | |
a0d0e21e LW |
395 | if (!av) |
396 | return; | |
93965878 NIS |
397 | if (SvREADONLY(av)) |
398 | croak(no_modify); | |
399 | ||
400 | if (SvRMAGICAL(av) && (mg = mg_find((SV*)av,'P'))) { | |
401 | dSP; | |
e788e7d3 | 402 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
403 | PUSHMARK(SP); |
404 | EXTEND(SP,2); | |
93965878 NIS |
405 | PUSHs(mg->mg_obj); |
406 | PUSHs(val); | |
a60c0954 NIS |
407 | PUTBACK; |
408 | ENTER; | |
93965878 | 409 | perl_call_method("PUSH", G_SCALAR|G_DISCARD); |
a60c0954 | 410 | LEAVE; |
d3acc0f7 | 411 | POPSTACK; |
93965878 NIS |
412 | return; |
413 | } | |
414 | av_store(av,AvFILLp(av)+1,val); | |
79072805 LW |
415 | } |
416 | ||
417 | SV * | |
8ac85365 | 418 | av_pop(register AV *av) |
79072805 LW |
419 | { |
420 | SV *retval; | |
93965878 | 421 | MAGIC* mg; |
79072805 | 422 | |
a0d0e21e LW |
423 | if (!av || AvFILL(av) < 0) |
424 | return &sv_undef; | |
43fcc5d2 CS |
425 | if (SvREADONLY(av)) |
426 | croak(no_modify); | |
93965878 NIS |
427 | if (SvRMAGICAL(av) && (mg = mg_find((SV*)av,'P'))) { |
428 | dSP; | |
e788e7d3 | 429 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 430 | PUSHMARK(SP); |
93965878 | 431 | XPUSHs(mg->mg_obj); |
a60c0954 NIS |
432 | PUTBACK; |
433 | ENTER; | |
93965878 NIS |
434 | if (perl_call_method("POP", G_SCALAR)) { |
435 | retval = newSVsv(*stack_sp--); | |
436 | } else { | |
437 | retval = &sv_undef; | |
438 | } | |
a60c0954 | 439 | LEAVE; |
d3acc0f7 | 440 | POPSTACK; |
93965878 NIS |
441 | return retval; |
442 | } | |
443 | retval = AvARRAY(av)[AvFILLp(av)]; | |
444 | AvARRAY(av)[AvFILLp(av)--] = &sv_undef; | |
8990e307 | 445 | if (SvSMAGICAL(av)) |
463ee0b2 | 446 | mg_set((SV*)av); |
79072805 LW |
447 | return retval; |
448 | } | |
449 | ||
450 | void | |
8ac85365 | 451 | av_unshift(register AV *av, register I32 num) |
79072805 LW |
452 | { |
453 | register I32 i; | |
67a38de0 | 454 | register SV **ary; |
93965878 | 455 | MAGIC* mg; |
79072805 | 456 | |
a0d0e21e | 457 | if (!av || num <= 0) |
79072805 | 458 | return; |
43fcc5d2 CS |
459 | if (SvREADONLY(av)) |
460 | croak(no_modify); | |
93965878 NIS |
461 | |
462 | if (SvRMAGICAL(av) && (mg = mg_find((SV*)av,'P'))) { | |
463 | dSP; | |
e788e7d3 | 464 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
465 | PUSHMARK(SP); |
466 | EXTEND(SP,1+num); | |
93965878 NIS |
467 | PUSHs(mg->mg_obj); |
468 | while (num-- > 0) { | |
469 | PUSHs(&sv_undef); | |
470 | } | |
471 | PUTBACK; | |
a60c0954 | 472 | ENTER; |
93965878 | 473 | perl_call_method("UNSHIFT", G_SCALAR|G_DISCARD); |
a60c0954 | 474 | LEAVE; |
d3acc0f7 | 475 | POPSTACK; |
93965878 NIS |
476 | return; |
477 | } | |
478 | ||
49beac48 CS |
479 | if (!AvREAL(av) && AvREIFY(av)) |
480 | av_reify(av); | |
a0d0e21e LW |
481 | i = AvARRAY(av) - AvALLOC(av); |
482 | if (i) { | |
483 | if (i > num) | |
484 | i = num; | |
485 | num -= i; | |
486 | ||
487 | AvMAX(av) += i; | |
93965878 | 488 | AvFILLp(av) += i; |
a0d0e21e LW |
489 | SvPVX(av) = (char*)(AvARRAY(av) - i); |
490 | } | |
d2719217 | 491 | if (num) { |
67a38de0 NIS |
492 | i = AvFILLp(av); |
493 | av_extend(av, i + num); | |
93965878 | 494 | AvFILLp(av) += num; |
67a38de0 NIS |
495 | ary = AvARRAY(av); |
496 | Move(ary, ary + num, i + 1, SV*); | |
497 | do { | |
498 | ary[--num] = &sv_undef; | |
499 | } while (num); | |
79072805 LW |
500 | } |
501 | } | |
502 | ||
503 | SV * | |
8ac85365 | 504 | av_shift(register AV *av) |
79072805 LW |
505 | { |
506 | SV *retval; | |
93965878 | 507 | MAGIC* mg; |
79072805 | 508 | |
a0d0e21e LW |
509 | if (!av || AvFILL(av) < 0) |
510 | return &sv_undef; | |
43fcc5d2 CS |
511 | if (SvREADONLY(av)) |
512 | croak(no_modify); | |
93965878 NIS |
513 | if (SvRMAGICAL(av) && (mg = mg_find((SV*)av,'P'))) { |
514 | dSP; | |
e788e7d3 | 515 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 516 | PUSHMARK(SP); |
93965878 | 517 | XPUSHs(mg->mg_obj); |
a60c0954 NIS |
518 | PUTBACK; |
519 | ENTER; | |
93965878 NIS |
520 | if (perl_call_method("SHIFT", G_SCALAR)) { |
521 | retval = newSVsv(*stack_sp--); | |
522 | } else { | |
523 | retval = &sv_undef; | |
a60c0954 NIS |
524 | } |
525 | LEAVE; | |
d3acc0f7 | 526 | POPSTACK; |
93965878 NIS |
527 | return retval; |
528 | } | |
463ee0b2 | 529 | retval = *AvARRAY(av); |
a0d0e21e LW |
530 | if (AvREAL(av)) |
531 | *AvARRAY(av) = &sv_undef; | |
463ee0b2 LW |
532 | SvPVX(av) = (char*)(AvARRAY(av) + 1); |
533 | AvMAX(av)--; | |
93965878 | 534 | AvFILLp(av)--; |
8990e307 | 535 | if (SvSMAGICAL(av)) |
463ee0b2 | 536 | mg_set((SV*)av); |
79072805 LW |
537 | return retval; |
538 | } | |
539 | ||
540 | I32 | |
8ac85365 | 541 | av_len(register AV *av) |
79072805 | 542 | { |
463ee0b2 | 543 | return AvFILL(av); |
79072805 LW |
544 | } |
545 | ||
546 | void | |
8ac85365 | 547 | av_fill(register AV *av, I32 fill) |
79072805 | 548 | { |
93965878 | 549 | MAGIC *mg; |
a0d0e21e LW |
550 | if (!av) |
551 | croak("panic: null array"); | |
79072805 LW |
552 | if (fill < 0) |
553 | fill = -1; | |
93965878 NIS |
554 | if (SvRMAGICAL(av) && (mg = mg_find((SV*)av,'P'))) { |
555 | dSP; | |
556 | ENTER; | |
557 | SAVETMPS; | |
e788e7d3 | 558 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
559 | PUSHMARK(SP); |
560 | EXTEND(SP,2); | |
93965878 | 561 | PUSHs(mg->mg_obj); |
a60c0954 | 562 | PUSHs(sv_2mortal(newSViv(fill+1))); |
93965878 NIS |
563 | PUTBACK; |
564 | perl_call_method("STORESIZE", G_SCALAR|G_DISCARD); | |
d3acc0f7 | 565 | POPSTACK; |
93965878 NIS |
566 | FREETMPS; |
567 | LEAVE; | |
568 | return; | |
569 | } | |
463ee0b2 | 570 | if (fill <= AvMAX(av)) { |
93965878 | 571 | I32 key = AvFILLp(av); |
a0d0e21e LW |
572 | SV** ary = AvARRAY(av); |
573 | ||
574 | if (AvREAL(av)) { | |
575 | while (key > fill) { | |
576 | SvREFCNT_dec(ary[key]); | |
577 | ary[key--] = &sv_undef; | |
578 | } | |
579 | } | |
580 | else { | |
581 | while (key < fill) | |
582 | ary[++key] = &sv_undef; | |
583 | } | |
584 | ||
93965878 | 585 | AvFILLp(av) = fill; |
8990e307 | 586 | if (SvSMAGICAL(av)) |
463ee0b2 LW |
587 | mg_set((SV*)av); |
588 | } | |
a0d0e21e LW |
589 | else |
590 | (void)av_store(av,fill,&sv_undef); | |
79072805 | 591 | } |
c750a3ec | 592 | |
57079c46 GA |
593 | |
594 | /* AVHV: Support for treating arrays as if they were hashes. The | |
595 | * first element of the array should be a hash reference that maps | |
596 | * hash keys to array indices. | |
597 | */ | |
598 | ||
72311751 | 599 | STATIC I32 |
57079c46 GA |
600 | avhv_index_sv(SV* sv) |
601 | { | |
602 | I32 index = SvIV(sv); | |
603 | if (index < 1) | |
604 | croak("Bad index while coercing array into hash"); | |
605 | return index; | |
606 | } | |
607 | ||
5d5aaa5e JP |
608 | HV* |
609 | avhv_keys(AV *av) | |
610 | { | |
57079c46 | 611 | SV **keysp = av_fetch(av, 0, FALSE); |
5d5aaa5e | 612 | if (keysp) { |
d627ae4e MB |
613 | SV *sv = *keysp; |
614 | if (SvGMAGICAL(sv)) | |
615 | mg_get(sv); | |
616 | if (SvROK(sv)) { | |
617 | sv = SvRV(sv); | |
618 | if (SvTYPE(sv) == SVt_PVHV) | |
57079c46 | 619 | return (HV*)sv; |
5d5aaa5e JP |
620 | } |
621 | } | |
57079c46 | 622 | croak("Can't coerce array into hash"); |
72311751 | 623 | return Nullhv; |
c750a3ec MB |
624 | } |
625 | ||
626 | SV** | |
8ac85365 | 627 | avhv_fetch_ent(AV *av, SV *keysv, I32 lval, U32 hash) |
97fcbf96 | 628 | { |
5d5aaa5e JP |
629 | SV **indsvp; |
630 | HV *keys = avhv_keys(av); | |
97fcbf96 | 631 | HE *he; |
5bc6513d | 632 | |
5d5aaa5e | 633 | he = hv_fetch_ent(keys, keysv, FALSE, hash); |
57079c46 GA |
634 | if (!he) |
635 | croak("No such array field"); | |
636 | return av_fetch(av, avhv_index_sv(HeVAL(he)), lval); | |
5bc6513d MB |
637 | } |
638 | ||
c750a3ec | 639 | bool |
8ac85365 | 640 | avhv_exists_ent(AV *av, SV *keysv, U32 hash) |
97fcbf96 | 641 | { |
5d5aaa5e JP |
642 | HV *keys = avhv_keys(av); |
643 | return hv_exists_ent(keys, keysv, hash); | |
97fcbf96 MB |
644 | } |
645 | ||
c750a3ec | 646 | HE * |
8ac85365 | 647 | avhv_iternext(AV *av) |
c750a3ec | 648 | { |
5d5aaa5e JP |
649 | HV *keys = avhv_keys(av); |
650 | return hv_iternext(keys); | |
c750a3ec MB |
651 | } |
652 | ||
653 | SV * | |
8ac85365 | 654 | avhv_iterval(AV *av, register HE *entry) |
c750a3ec | 655 | { |
57079c46 GA |
656 | SV *sv = hv_iterval(avhv_keys(av), entry); |
657 | return *av_fetch(av, avhv_index_sv(sv), TRUE); | |
c750a3ec | 658 | } |