Commit | Line | Data |
a0d0e21e |
1 | /* pp_hot.c |
2 | * |
9607fc9c |
3 | * Copyright (c) 1991-1997, Larry Wall |
a0d0e21e |
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 | * |
8 | */ |
9 | |
10 | /* |
11 | * Then he heard Merry change the note, and up went the Horn-cry of Buckland, |
12 | * shaking the air. |
13 | * |
14 | * Awake! Awake! Fear, Fire, Foes! Awake! |
15 | * Fire, Foes! Awake! |
16 | */ |
17 | |
18 | #include "EXTERN.h" |
19 | #include "perl.h" |
20 | |
8ac85365 |
21 | #ifdef I_UNISTD |
22 | #include <unistd.h> |
23 | #endif |
9d116dd7 |
24 | #ifdef I_FCNTL |
25 | #include <fcntl.h> |
26 | #endif |
27 | #ifdef I_SYS_FILE |
28 | #include <sys/file.h> |
29 | #endif |
8ac85365 |
30 | |
a0ed51b3 |
31 | #define HOP(pos,off) (IN_UTF8 ? utf8_hop(pos, off) : (pos + off)) |
32 | |
a0d0e21e |
33 | /* Hot code. */ |
34 | |
11343788 |
35 | #ifdef USE_THREADS |
36 | static void |
8ac85365 |
37 | unset_cvowner(void *cvarg) |
11343788 |
38 | { |
39 | register CV* cv = (CV *) cvarg; |
40 | #ifdef DEBUGGING |
41 | dTHR; |
42 | #endif /* DEBUGGING */ |
43 | |
8b73bbec |
44 | DEBUG_S((PerlIO_printf(PerlIO_stderr(), "%p unsetting CvOWNER of %p:%s\n", |
1fd28e87 |
45 | thr, cv, SvPEEK((SV*)cv)))); |
11343788 |
46 | MUTEX_LOCK(CvMUTEXP(cv)); |
8b73bbec |
47 | DEBUG_S(if (CvDEPTH(cv) != 0) |
77a005ab |
48 | PerlIO_printf(PerlIO_stderr(), "depth %ld != 0\n", |
49 | CvDEPTH(cv));); |
11343788 |
50 | assert(thr == CvOWNER(cv)); |
51 | CvOWNER(cv) = 0; |
11343788 |
52 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
53 | SvREFCNT_dec(cv); |
54 | } |
11343788 |
55 | #endif /* USE_THREADS */ |
56 | |
a0d0e21e |
57 | PP(pp_const) |
58 | { |
4e35701f |
59 | djSP; |
a0d0e21e |
60 | XPUSHs(cSVOP->op_sv); |
61 | RETURN; |
62 | } |
63 | |
64 | PP(pp_nextstate) |
65 | { |
533c011a |
66 | PL_curcop = (COP*)PL_op; |
a0d0e21e |
67 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 |
68 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e |
69 | FREETMPS; |
70 | return NORMAL; |
71 | } |
72 | |
73 | PP(pp_gvsv) |
74 | { |
4e35701f |
75 | djSP; |
924508f0 |
76 | EXTEND(SP,1); |
533c011a |
77 | if (PL_op->op_private & OPpLVAL_INTRO) |
a0d0e21e |
78 | PUSHs(save_scalar(cGVOP->op_gv)); |
79 | else |
80 | PUSHs(GvSV(cGVOP->op_gv)); |
81 | RETURN; |
82 | } |
83 | |
84 | PP(pp_null) |
85 | { |
86 | return NORMAL; |
87 | } |
88 | |
89 | PP(pp_pushmark) |
90 | { |
3280af22 |
91 | PUSHMARK(PL_stack_sp); |
a0d0e21e |
92 | return NORMAL; |
93 | } |
94 | |
95 | PP(pp_stringify) |
96 | { |
4e35701f |
97 | djSP; dTARGET; |
a0d0e21e |
98 | STRLEN len; |
99 | char *s; |
100 | s = SvPV(TOPs,len); |
101 | sv_setpvn(TARG,s,len); |
102 | SETTARG; |
103 | RETURN; |
104 | } |
105 | |
106 | PP(pp_gv) |
107 | { |
4e35701f |
108 | djSP; |
a0d0e21e |
109 | XPUSHs((SV*)cGVOP->op_gv); |
110 | RETURN; |
111 | } |
112 | |
113 | PP(pp_and) |
114 | { |
4e35701f |
115 | djSP; |
a0d0e21e |
116 | if (!SvTRUE(TOPs)) |
117 | RETURN; |
118 | else { |
119 | --SP; |
120 | RETURNOP(cLOGOP->op_other); |
121 | } |
122 | } |
123 | |
124 | PP(pp_sassign) |
125 | { |
4e35701f |
126 | djSP; dPOPTOPssrl; |
748a9306 |
127 | MAGIC *mg; |
128 | |
533c011a |
129 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
a0d0e21e |
130 | SV *temp; |
131 | temp = left; left = right; right = temp; |
132 | } |
3280af22 |
133 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e |
134 | TAINT_NOT; |
54310121 |
135 | SvSetMagicSV(right, left); |
a0d0e21e |
136 | SETs(right); |
137 | RETURN; |
138 | } |
139 | |
140 | PP(pp_cond_expr) |
141 | { |
4e35701f |
142 | djSP; |
a0d0e21e |
143 | if (SvTRUEx(POPs)) |
144 | RETURNOP(cCONDOP->op_true); |
145 | else |
146 | RETURNOP(cCONDOP->op_false); |
147 | } |
148 | |
149 | PP(pp_unstack) |
150 | { |
151 | I32 oldsave; |
152 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 |
153 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e |
154 | FREETMPS; |
3280af22 |
155 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e |
156 | LEAVE_SCOPE(oldsave); |
157 | return NORMAL; |
158 | } |
159 | |
a0d0e21e |
160 | PP(pp_concat) |
161 | { |
4e35701f |
162 | djSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 |
163 | { |
164 | dPOPTOPssrl; |
a0d0e21e |
165 | STRLEN len; |
166 | char *s; |
167 | if (TARG != left) { |
168 | s = SvPV(left,len); |
169 | sv_setpvn(TARG,s,len); |
170 | } |
c07a80fd |
171 | else if (SvGMAGICAL(TARG)) |
172 | mg_get(TARG); |
7a4c00b4 |
173 | else if (!SvOK(TARG) && SvTYPE(TARG) <= SVt_PVMG) { |
748a9306 |
174 | sv_setpv(TARG, ""); /* Suppress warning. */ |
7a4c00b4 |
175 | s = SvPV_force(TARG, len); |
4633a7c4 |
176 | } |
a0d0e21e |
177 | s = SvPV(right,len); |
68dc0745 |
178 | if (SvOK(TARG)) |
179 | sv_catpvn(TARG,s,len); |
180 | else |
181 | sv_setpvn(TARG,s,len); /* suppress warning */ |
a0d0e21e |
182 | SETTARG; |
183 | RETURN; |
748a9306 |
184 | } |
a0d0e21e |
185 | } |
186 | |
187 | PP(pp_padsv) |
188 | { |
4e35701f |
189 | djSP; dTARGET; |
a0d0e21e |
190 | XPUSHs(TARG); |
533c011a |
191 | if (PL_op->op_flags & OPf_MOD) { |
192 | if (PL_op->op_private & OPpLVAL_INTRO) |
193 | SAVECLEARSV(PL_curpad[PL_op->op_targ]); |
194 | else if (PL_op->op_private & OPpDEREF) { |
8ec5e241 |
195 | PUTBACK; |
533c011a |
196 | vivify_ref(PL_curpad[PL_op->op_targ], PL_op->op_private & OPpDEREF); |
8ec5e241 |
197 | SPAGAIN; |
198 | } |
4633a7c4 |
199 | } |
a0d0e21e |
200 | RETURN; |
201 | } |
202 | |
203 | PP(pp_readline) |
204 | { |
3280af22 |
205 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
a0d0e21e |
206 | return do_readline(); |
207 | } |
208 | |
209 | PP(pp_eq) |
210 | { |
4e35701f |
211 | djSP; tryAMAGICbinSET(eq,0); |
a0d0e21e |
212 | { |
213 | dPOPnv; |
54310121 |
214 | SETs(boolSV(TOPn == value)); |
a0d0e21e |
215 | RETURN; |
216 | } |
217 | } |
218 | |
219 | PP(pp_preinc) |
220 | { |
4e35701f |
221 | djSP; |
68dc0745 |
222 | if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV) |
44a8e56a |
223 | croak(no_modify); |
55497cff |
224 | if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) && |
225 | SvIVX(TOPs) != IV_MAX) |
226 | { |
748a9306 |
227 | ++SvIVX(TOPs); |
55497cff |
228 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 |
229 | } |
230 | else |
231 | sv_inc(TOPs); |
a0d0e21e |
232 | SvSETMAGIC(TOPs); |
233 | return NORMAL; |
234 | } |
235 | |
236 | PP(pp_or) |
237 | { |
4e35701f |
238 | djSP; |
a0d0e21e |
239 | if (SvTRUE(TOPs)) |
240 | RETURN; |
241 | else { |
242 | --SP; |
243 | RETURNOP(cLOGOP->op_other); |
244 | } |
245 | } |
246 | |
247 | PP(pp_add) |
248 | { |
4e35701f |
249 | djSP; dATARGET; tryAMAGICbin(add,opASSIGN); |
a0d0e21e |
250 | { |
7a4c00b4 |
251 | dPOPTOPnnrl_ul; |
a0d0e21e |
252 | SETn( left + right ); |
253 | RETURN; |
254 | } |
255 | } |
256 | |
257 | PP(pp_aelemfast) |
258 | { |
4e35701f |
259 | djSP; |
a0d0e21e |
260 | AV *av = GvAV((GV*)cSVOP->op_sv); |
533c011a |
261 | U32 lval = PL_op->op_flags & OPf_MOD; |
262 | SV** svp = av_fetch(av, PL_op->op_private, lval); |
3280af22 |
263 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 |
264 | EXTEND(SP, 1); |
be6c24e0 |
265 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
266 | sv = sv_mortalcopy(sv); |
267 | PUSHs(sv); |
a0d0e21e |
268 | RETURN; |
269 | } |
270 | |
271 | PP(pp_join) |
272 | { |
4e35701f |
273 | djSP; dMARK; dTARGET; |
a0d0e21e |
274 | MARK++; |
275 | do_join(TARG, *MARK, MARK, SP); |
276 | SP = MARK; |
277 | SETs(TARG); |
278 | RETURN; |
279 | } |
280 | |
281 | PP(pp_pushre) |
282 | { |
4e35701f |
283 | djSP; |
44a8e56a |
284 | #ifdef DEBUGGING |
285 | /* |
286 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs |
287 | * will be enough to hold an OP*. |
288 | */ |
289 | SV* sv = sv_newmortal(); |
290 | sv_upgrade(sv, SVt_PVLV); |
291 | LvTYPE(sv) = '/'; |
533c011a |
292 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a |
293 | XPUSHs(sv); |
294 | #else |
6b88bc9c |
295 | XPUSHs((SV*)PL_op); |
44a8e56a |
296 | #endif |
a0d0e21e |
297 | RETURN; |
298 | } |
299 | |
300 | /* Oversized hot code. */ |
301 | |
302 | PP(pp_print) |
303 | { |
4e35701f |
304 | djSP; dMARK; dORIGMARK; |
a0d0e21e |
305 | GV *gv; |
306 | IO *io; |
760ac839 |
307 | register PerlIO *fp; |
236988e4 |
308 | MAGIC *mg; |
a0d0e21e |
309 | |
533c011a |
310 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
311 | gv = (GV*)*++MARK; |
312 | else |
3280af22 |
313 | gv = PL_defoutgv; |
3049007d |
314 | if (SvRMAGICAL(gv) && (mg = mg_find((SV*)gv, 'q'))) { |
68dc0745 |
315 | if (MARK == ORIGMARK) { |
a60c0954 |
316 | /* If using default handle then we need to make space to |
317 | * pass object as 1st arg, so move other args up ... |
318 | */ |
4352c267 |
319 | MEXTEND(SP, 1); |
68dc0745 |
320 | ++MARK; |
321 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); |
322 | ++SP; |
323 | } |
324 | PUSHMARK(MARK - 1); |
236988e4 |
325 | *MARK = mg->mg_obj; |
68dc0745 |
326 | PUTBACK; |
236988e4 |
327 | ENTER; |
328 | perl_call_method("PRINT", G_SCALAR); |
329 | LEAVE; |
330 | SPAGAIN; |
68dc0745 |
331 | MARK = ORIGMARK + 1; |
332 | *MARK = *SP; |
333 | SP = MARK; |
236988e4 |
334 | RETURN; |
335 | } |
a0d0e21e |
336 | if (!(io = GvIO(gv))) { |
599cee73 |
337 | if (ckWARN(WARN_UNOPENED)) { |
748a9306 |
338 | SV* sv = sv_newmortal(); |
4f732624 |
339 | gv_fullname3(sv, gv, Nullch); |
599cee73 |
340 | warner(WARN_UNOPENED, "Filehandle %s never opened", SvPV(sv,PL_na)); |
748a9306 |
341 | } |
342 | |
343 | SETERRNO(EBADF,RMS$_IFI); |
a0d0e21e |
344 | goto just_say_no; |
345 | } |
346 | else if (!(fp = IoOFP(io))) { |
599cee73 |
347 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
748a9306 |
348 | SV* sv = sv_newmortal(); |
4f732624 |
349 | gv_fullname3(sv, gv, Nullch); |
a0d0e21e |
350 | if (IoIFP(io)) |
599cee73 |
351 | warner(WARN_IO, "Filehandle %s opened only for input", |
352 | SvPV(sv,PL_na)); |
353 | else if (ckWARN(WARN_CLOSED)) |
354 | warner(WARN_CLOSED, "print on closed filehandle %s", |
355 | SvPV(sv,PL_na)); |
a0d0e21e |
356 | } |
748a9306 |
357 | SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI); |
a0d0e21e |
358 | goto just_say_no; |
359 | } |
360 | else { |
361 | MARK++; |
3280af22 |
362 | if (PL_ofslen) { |
a0d0e21e |
363 | while (MARK <= SP) { |
364 | if (!do_print(*MARK, fp)) |
365 | break; |
366 | MARK++; |
367 | if (MARK <= SP) { |
3280af22 |
368 | if (PerlIO_write(fp, PL_ofs, PL_ofslen) == 0 || PerlIO_error(fp)) { |
a0d0e21e |
369 | MARK--; |
370 | break; |
371 | } |
372 | } |
373 | } |
374 | } |
375 | else { |
376 | while (MARK <= SP) { |
377 | if (!do_print(*MARK, fp)) |
378 | break; |
379 | MARK++; |
380 | } |
381 | } |
382 | if (MARK <= SP) |
383 | goto just_say_no; |
384 | else { |
3280af22 |
385 | if (PL_orslen) |
386 | if (PerlIO_write(fp, PL_ors, PL_orslen) == 0 || PerlIO_error(fp)) |
a0d0e21e |
387 | goto just_say_no; |
388 | |
389 | if (IoFLAGS(io) & IOf_FLUSH) |
760ac839 |
390 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e |
391 | goto just_say_no; |
392 | } |
393 | } |
394 | SP = ORIGMARK; |
3280af22 |
395 | PUSHs(&PL_sv_yes); |
a0d0e21e |
396 | RETURN; |
397 | |
398 | just_say_no: |
399 | SP = ORIGMARK; |
3280af22 |
400 | PUSHs(&PL_sv_undef); |
a0d0e21e |
401 | RETURN; |
402 | } |
403 | |
404 | PP(pp_rv2av) |
405 | { |
4e35701f |
406 | djSP; dPOPss; |
a0d0e21e |
407 | AV *av; |
408 | |
409 | if (SvROK(sv)) { |
410 | wasref: |
411 | av = (AV*)SvRV(sv); |
412 | if (SvTYPE(av) != SVt_PVAV) |
413 | DIE("Not an ARRAY reference"); |
533c011a |
414 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
415 | PUSHs((SV*)av); |
416 | RETURN; |
417 | } |
418 | } |
419 | else { |
420 | if (SvTYPE(sv) == SVt_PVAV) { |
421 | av = (AV*)sv; |
533c011a |
422 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
423 | PUSHs((SV*)av); |
424 | RETURN; |
425 | } |
426 | } |
427 | else { |
67955e0c |
428 | GV *gv; |
429 | |
a0d0e21e |
430 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
431 | char *sym; |
432 | |
a0d0e21e |
433 | if (SvGMAGICAL(sv)) { |
434 | mg_get(sv); |
435 | if (SvROK(sv)) |
436 | goto wasref; |
437 | } |
438 | if (!SvOK(sv)) { |
533c011a |
439 | if (PL_op->op_flags & OPf_REF || |
440 | PL_op->op_private & HINT_STRICT_REFS) |
a0d0e21e |
441 | DIE(no_usym, "an ARRAY"); |
599cee73 |
442 | if (ckWARN(WARN_UNINITIALIZED)) |
443 | warner(WARN_UNINITIALIZED, warn_uninit); |
4633a7c4 |
444 | if (GIMME == G_ARRAY) |
445 | RETURN; |
a0d0e21e |
446 | RETPUSHUNDEF; |
447 | } |
3280af22 |
448 | sym = SvPV(sv,PL_na); |
533c011a |
449 | if (PL_op->op_private & HINT_STRICT_REFS) |
748a9306 |
450 | DIE(no_symref, sym, "an ARRAY"); |
67955e0c |
451 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
452 | } else { |
453 | gv = (GV*)sv; |
a0d0e21e |
454 | } |
67955e0c |
455 | av = GvAVn(gv); |
533c011a |
456 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c |
457 | av = save_ary(gv); |
533c011a |
458 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
459 | PUSHs((SV*)av); |
460 | RETURN; |
461 | } |
462 | } |
463 | } |
464 | |
465 | if (GIMME == G_ARRAY) { |
466 | I32 maxarg = AvFILL(av) + 1; |
93965878 |
467 | EXTEND(SP, maxarg); |
468 | if (SvRMAGICAL(av)) { |
469 | U32 i; |
470 | for (i=0; i < maxarg; i++) { |
471 | SV **svp = av_fetch(av, i, FALSE); |
3280af22 |
472 | SP[i+1] = (svp) ? *svp : &PL_sv_undef; |
93965878 |
473 | } |
474 | } |
475 | else { |
476 | Copy(AvARRAY(av), SP+1, maxarg, SV*); |
477 | } |
a0d0e21e |
478 | SP += maxarg; |
479 | } |
480 | else { |
481 | dTARGET; |
482 | I32 maxarg = AvFILL(av) + 1; |
483 | PUSHi(maxarg); |
484 | } |
485 | RETURN; |
486 | } |
487 | |
488 | PP(pp_rv2hv) |
489 | { |
4e35701f |
490 | djSP; dTOPss; |
a0d0e21e |
491 | HV *hv; |
492 | |
493 | if (SvROK(sv)) { |
494 | wasref: |
495 | hv = (HV*)SvRV(sv); |
c750a3ec |
496 | if (SvTYPE(hv) != SVt_PVHV && SvTYPE(hv) != SVt_PVAV) |
a0d0e21e |
497 | DIE("Not a HASH reference"); |
533c011a |
498 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
499 | SETs((SV*)hv); |
500 | RETURN; |
501 | } |
502 | } |
503 | else { |
c750a3ec |
504 | if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) { |
a0d0e21e |
505 | hv = (HV*)sv; |
533c011a |
506 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
507 | SETs((SV*)hv); |
508 | RETURN; |
509 | } |
510 | } |
511 | else { |
67955e0c |
512 | GV *gv; |
513 | |
a0d0e21e |
514 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
515 | char *sym; |
516 | |
a0d0e21e |
517 | if (SvGMAGICAL(sv)) { |
518 | mg_get(sv); |
519 | if (SvROK(sv)) |
520 | goto wasref; |
521 | } |
522 | if (!SvOK(sv)) { |
533c011a |
523 | if (PL_op->op_flags & OPf_REF || |
524 | PL_op->op_private & HINT_STRICT_REFS) |
a0d0e21e |
525 | DIE(no_usym, "a HASH"); |
599cee73 |
526 | if (ckWARN(WARN_UNINITIALIZED)) |
527 | warner(WARN_UNINITIALIZED, warn_uninit); |
4633a7c4 |
528 | if (GIMME == G_ARRAY) { |
529 | SP--; |
530 | RETURN; |
531 | } |
a0d0e21e |
532 | RETSETUNDEF; |
533 | } |
3280af22 |
534 | sym = SvPV(sv,PL_na); |
533c011a |
535 | if (PL_op->op_private & HINT_STRICT_REFS) |
748a9306 |
536 | DIE(no_symref, sym, "a HASH"); |
67955e0c |
537 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
538 | } else { |
539 | gv = (GV*)sv; |
a0d0e21e |
540 | } |
67955e0c |
541 | hv = GvHVn(gv); |
533c011a |
542 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c |
543 | hv = save_hash(gv); |
533c011a |
544 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
545 | SETs((SV*)hv); |
546 | RETURN; |
547 | } |
548 | } |
549 | } |
550 | |
551 | if (GIMME == G_ARRAY) { /* array wanted */ |
3280af22 |
552 | *PL_stack_sp = (SV*)hv; |
a0d0e21e |
553 | return do_kv(ARGS); |
554 | } |
555 | else { |
556 | dTARGET; |
4b154ab5 |
557 | if (SvTYPE(hv) == SVt_PVAV) |
558 | hv = avhv_keys((AV*)hv); |
46fc3d4c |
559 | if (HvFILL(hv)) |
560 | sv_setpvf(TARG, "%ld/%ld", |
561 | (long)HvFILL(hv), (long)HvMAX(hv) + 1); |
a0d0e21e |
562 | else |
563 | sv_setiv(TARG, 0); |
c750a3ec |
564 | |
a0d0e21e |
565 | SETTARG; |
566 | RETURN; |
567 | } |
568 | } |
569 | |
570 | PP(pp_aassign) |
571 | { |
4e35701f |
572 | djSP; |
3280af22 |
573 | SV **lastlelem = PL_stack_sp; |
574 | SV **lastrelem = PL_stack_base + POPMARK; |
575 | SV **firstrelem = PL_stack_base + POPMARK + 1; |
a0d0e21e |
576 | SV **firstlelem = lastrelem + 1; |
577 | |
578 | register SV **relem; |
579 | register SV **lelem; |
580 | |
581 | register SV *sv; |
582 | register AV *ary; |
583 | |
54310121 |
584 | I32 gimme; |
a0d0e21e |
585 | HV *hash; |
586 | I32 i; |
587 | int magic; |
588 | |
3280af22 |
589 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
a0d0e21e |
590 | |
591 | /* If there's a common identifier on both sides we have to take |
592 | * special care that assigning the identifier on the left doesn't |
593 | * clobber a value on the right that's used later in the list. |
594 | */ |
533c011a |
595 | if (PL_op->op_private & OPpASSIGN_COMMON) { |
a0d0e21e |
596 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
597 | /*SUPPRESS 560*/ |
a1f49e72 |
598 | if (sv = *relem) { |
599 | TAINT_NOT; /* Each item is independent */ |
a0d0e21e |
600 | *relem = sv_mortalcopy(sv); |
a1f49e72 |
601 | } |
a0d0e21e |
602 | } |
603 | } |
604 | |
605 | relem = firstrelem; |
606 | lelem = firstlelem; |
607 | ary = Null(AV*); |
608 | hash = Null(HV*); |
609 | while (lelem <= lastlelem) { |
bbce6d69 |
610 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e |
611 | sv = *lelem++; |
612 | switch (SvTYPE(sv)) { |
613 | case SVt_PVAV: |
614 | ary = (AV*)sv; |
748a9306 |
615 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e |
616 | |
617 | av_clear(ary); |
7e42bd57 |
618 | av_extend(ary, lastrelem - relem); |
a0d0e21e |
619 | i = 0; |
620 | while (relem <= lastrelem) { /* gobble up all the rest */ |
5117ca91 |
621 | SV **didstore; |
a0d0e21e |
622 | sv = NEWSV(28,0); |
623 | assert(*relem); |
624 | sv_setsv(sv,*relem); |
625 | *(relem++) = sv; |
5117ca91 |
626 | didstore = av_store(ary,i++,sv); |
627 | if (magic) { |
fb73857a |
628 | if (SvSMAGICAL(sv)) |
629 | mg_set(sv); |
5117ca91 |
630 | if (!didstore) |
631 | SvREFCNT_dec(sv); |
632 | } |
bbce6d69 |
633 | TAINT_NOT; |
a0d0e21e |
634 | } |
635 | break; |
636 | case SVt_PVHV: { |
a0d0e21e |
637 | SV *tmpstr; |
638 | |
639 | hash = (HV*)sv; |
748a9306 |
640 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e |
641 | hv_clear(hash); |
642 | |
643 | while (relem < lastrelem) { /* gobble up all the rest */ |
5117ca91 |
644 | HE *didstore; |
4633a7c4 |
645 | if (*relem) |
a0d0e21e |
646 | sv = *(relem++); |
4633a7c4 |
647 | else |
3280af22 |
648 | sv = &PL_sv_no, relem++; |
a0d0e21e |
649 | tmpstr = NEWSV(29,0); |
650 | if (*relem) |
651 | sv_setsv(tmpstr,*relem); /* value */ |
652 | *(relem++) = tmpstr; |
5117ca91 |
653 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
654 | if (magic) { |
fb73857a |
655 | if (SvSMAGICAL(tmpstr)) |
656 | mg_set(tmpstr); |
5117ca91 |
657 | if (!didstore) |
658 | SvREFCNT_dec(tmpstr); |
659 | } |
bbce6d69 |
660 | TAINT_NOT; |
8e07c86e |
661 | } |
6a0deba8 |
662 | if (relem == lastrelem) { |
663 | if (*relem) { |
664 | HE *didstore; |
599cee73 |
665 | if (ckWARN(WARN_UNSAFE)) { |
6a0deba8 |
666 | if (relem == firstrelem && |
667 | SvROK(*relem) && |
668 | ( SvTYPE(SvRV(*relem)) == SVt_PVAV || |
669 | SvTYPE(SvRV(*relem)) == SVt_PVHV ) ) |
599cee73 |
670 | warner(WARN_UNSAFE, "Reference found where even-sized list expected"); |
6a0deba8 |
671 | else |
599cee73 |
672 | warner(WARN_UNSAFE, "Odd number of elements in hash assignment"); |
6a0deba8 |
673 | } |
674 | tmpstr = NEWSV(29,0); |
675 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
676 | if (magic) { |
677 | if (SvSMAGICAL(tmpstr)) |
678 | mg_set(tmpstr); |
679 | if (!didstore) |
680 | SvREFCNT_dec(tmpstr); |
681 | } |
682 | TAINT_NOT; |
683 | } |
684 | relem++; |
1930e939 |
685 | } |
a0d0e21e |
686 | } |
687 | break; |
688 | default: |
689 | if (SvTHINKFIRST(sv)) { |
3280af22 |
690 | if (SvREADONLY(sv) && PL_curcop != &PL_compiling) { |
d689ffdd |
691 | if (!SvIMMORTAL(sv)) |
a0d0e21e |
692 | DIE(no_modify); |
693 | if (relem <= lastrelem) |
694 | relem++; |
695 | break; |
696 | } |
697 | if (SvROK(sv)) |
698 | sv_unref(sv); |
699 | } |
700 | if (relem <= lastrelem) { |
701 | sv_setsv(sv, *relem); |
702 | *(relem++) = sv; |
703 | } |
704 | else |
3280af22 |
705 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e |
706 | SvSETMAGIC(sv); |
707 | break; |
708 | } |
709 | } |
3280af22 |
710 | if (PL_delaymagic & ~DM_DELAY) { |
711 | if (PL_delaymagic & DM_UID) { |
a0d0e21e |
712 | #ifdef HAS_SETRESUID |
b28d0864 |
713 | (void)setresuid(PL_uid,PL_euid,(Uid_t)-1); |
56febc5e |
714 | #else |
715 | # ifdef HAS_SETREUID |
3280af22 |
716 | (void)setreuid(PL_uid,PL_euid); |
56febc5e |
717 | # else |
718 | # ifdef HAS_SETRUID |
b28d0864 |
719 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
720 | (void)setruid(PL_uid); |
721 | PL_delaymagic &= ~DM_RUID; |
a0d0e21e |
722 | } |
56febc5e |
723 | # endif /* HAS_SETRUID */ |
724 | # ifdef HAS_SETEUID |
b28d0864 |
725 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
726 | (void)seteuid(PL_uid); |
727 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e |
728 | } |
56febc5e |
729 | # endif /* HAS_SETEUID */ |
b28d0864 |
730 | if (PL_delaymagic & DM_UID) { |
731 | if (PL_uid != PL_euid) |
a0d0e21e |
732 | DIE("No setreuid available"); |
b28d0864 |
733 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e |
734 | } |
56febc5e |
735 | # endif /* HAS_SETREUID */ |
736 | #endif /* HAS_SETRESUID */ |
3280af22 |
737 | PL_uid = (int)PerlProc_getuid(); |
738 | PL_euid = (int)PerlProc_geteuid(); |
a0d0e21e |
739 | } |
3280af22 |
740 | if (PL_delaymagic & DM_GID) { |
a0d0e21e |
741 | #ifdef HAS_SETRESGID |
b28d0864 |
742 | (void)setresgid(PL_gid,PL_egid,(Gid_t)-1); |
56febc5e |
743 | #else |
744 | # ifdef HAS_SETREGID |
3280af22 |
745 | (void)setregid(PL_gid,PL_egid); |
56febc5e |
746 | # else |
747 | # ifdef HAS_SETRGID |
b28d0864 |
748 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
749 | (void)setrgid(PL_gid); |
750 | PL_delaymagic &= ~DM_RGID; |
a0d0e21e |
751 | } |
56febc5e |
752 | # endif /* HAS_SETRGID */ |
753 | # ifdef HAS_SETEGID |
b28d0864 |
754 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
755 | (void)setegid(PL_gid); |
756 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e |
757 | } |
56febc5e |
758 | # endif /* HAS_SETEGID */ |
b28d0864 |
759 | if (PL_delaymagic & DM_GID) { |
760 | if (PL_gid != PL_egid) |
a0d0e21e |
761 | DIE("No setregid available"); |
b28d0864 |
762 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e |
763 | } |
56febc5e |
764 | # endif /* HAS_SETREGID */ |
765 | #endif /* HAS_SETRESGID */ |
3280af22 |
766 | PL_gid = (int)PerlProc_getgid(); |
767 | PL_egid = (int)PerlProc_getegid(); |
a0d0e21e |
768 | } |
3280af22 |
769 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e |
770 | } |
3280af22 |
771 | PL_delaymagic = 0; |
54310121 |
772 | |
773 | gimme = GIMME_V; |
774 | if (gimme == G_VOID) |
775 | SP = firstrelem - 1; |
776 | else if (gimme == G_SCALAR) { |
777 | dTARGET; |
778 | SP = firstrelem; |
779 | SETi(lastrelem - firstrelem + 1); |
780 | } |
781 | else { |
a0d0e21e |
782 | if (ary || hash) |
783 | SP = lastrelem; |
784 | else |
785 | SP = firstrelem + (lastlelem - firstlelem); |
0c8c7a05 |
786 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc |
787 | while (relem <= SP) |
3280af22 |
788 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e |
789 | } |
54310121 |
790 | RETURN; |
a0d0e21e |
791 | } |
792 | |
8782bef2 |
793 | PP(pp_qr) |
794 | { |
795 | djSP; |
796 | register PMOP *pm = cPMOP; |
797 | SV *rv = sv_newmortal(); |
798 | SV *sv = newSVrv(rv, "Regexp"); |
799 | sv_magic(sv,(SV*)ReREFCNT_inc(pm->op_pmregexp),'r',0,0); |
800 | RETURNX(PUSHs(rv)); |
801 | } |
802 | |
a0d0e21e |
803 | PP(pp_match) |
804 | { |
4e35701f |
805 | djSP; dTARG; |
a0d0e21e |
806 | register PMOP *pm = cPMOP; |
807 | register char *t; |
808 | register char *s; |
809 | char *strend; |
810 | I32 global; |
811 | I32 safebase; |
812 | char *truebase; |
d9f97599 |
813 | register REGEXP *rx = pm->op_pmregexp; |
b3eb6a9b |
814 | bool rxtainted; |
a0d0e21e |
815 | I32 gimme = GIMME; |
816 | STRLEN len; |
748a9306 |
817 | I32 minmatch = 0; |
3280af22 |
818 | I32 oldsave = PL_savestack_ix; |
f86702cc |
819 | I32 update_minmatch = 1; |
c277df42 |
820 | SV *screamer; |
a0d0e21e |
821 | |
533c011a |
822 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
823 | TARG = POPs; |
824 | else { |
54b9620d |
825 | TARG = DEFSV; |
a0d0e21e |
826 | EXTEND(SP,1); |
827 | } |
c277df42 |
828 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e |
829 | s = SvPV(TARG, len); |
830 | strend = s + len; |
831 | if (!s) |
832 | DIE("panic: do_match"); |
b3eb6a9b |
833 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 |
834 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba |
835 | TAINT_NOT; |
a0d0e21e |
836 | |
48c036b1 |
837 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 |
838 | failure: |
a0d0e21e |
839 | if (gimme == G_ARRAY) |
840 | RETURN; |
841 | RETPUSHNO; |
842 | } |
843 | |
3280af22 |
844 | if (!rx->prelen && PL_curpm) { |
845 | pm = PL_curpm; |
d9f97599 |
846 | rx = pm->op_pmregexp; |
a0d0e21e |
847 | } |
d9f97599 |
848 | if (rx->minlen > len) goto failure; |
c277df42 |
849 | |
d9f97599 |
850 | screamer = ( (SvSCREAM(TARG) && rx->check_substr |
851 | && SvTYPE(rx->check_substr) == SVt_PVBM |
852 | && SvVALID(rx->check_substr)) |
c277df42 |
853 | ? TARG : Nullsv); |
a0d0e21e |
854 | truebase = t = s; |
855 | if (global = pm->op_pmflags & PMf_GLOBAL) { |
d9f97599 |
856 | rx->startp[0] = 0; |
a0d0e21e |
857 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
858 | MAGIC* mg = mg_find(TARG, 'g'); |
565764a8 |
859 | if (mg && mg->mg_len >= 0) { |
d9f97599 |
860 | rx->endp[0] = rx->startp[0] = s + mg->mg_len; |
748a9306 |
861 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc |
862 | update_minmatch = 0; |
748a9306 |
863 | } |
a0d0e21e |
864 | } |
865 | } |
9d080a66 |
866 | safebase = ((gimme != G_ARRAY && !global && rx->nparens) |
867 | || SvTEMP(TARG) || PL_sawampersand) |
868 | ? REXEC_COPY_STR : 0; |
a0d0e21e |
869 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 |
870 | SAVEINT(PL_multiline); |
871 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; |
a0d0e21e |
872 | } |
873 | |
874 | play_it_again: |
d9f97599 |
875 | if (global && rx->startp[0]) { |
876 | t = s = rx->endp[0]; |
877 | if ((s + rx->minlen) > strend) |
a0d0e21e |
878 | goto nope; |
f86702cc |
879 | if (update_minmatch++) |
d9f97599 |
880 | minmatch = (s == rx->startp[0]); |
a0d0e21e |
881 | } |
d9f97599 |
882 | if (rx->check_substr) { |
883 | if (!(rx->reganch & ROPT_NOSCAN)) { /* Floating checkstring. */ |
c277df42 |
884 | if ( screamer ) { |
885 | I32 p = -1; |
a0ed51b3 |
886 | char *b; |
c277df42 |
887 | |
3280af22 |
888 | if (PL_screamfirst[BmRARE(rx->check_substr)] < 0) |
a0d0e21e |
889 | goto nope; |
a0ed51b3 |
890 | |
dfe13c55 |
891 | b = (char*)HOP((U8*)s, rx->check_offset_min); |
a0ed51b3 |
892 | if (!(s = screaminstr(TARG, rx->check_substr, b - s, 0, &p, 0))) |
a0d0e21e |
893 | goto nope; |
a0ed51b3 |
894 | |
895 | if ((rx->reganch & ROPT_CHECK_ALL) |
3280af22 |
896 | && !PL_sawampersand && !SvTAIL(rx->check_substr)) |
a0d0e21e |
897 | goto yup; |
898 | } |
a0ed51b3 |
899 | else if (!(s = fbm_instr((unsigned char*)HOP((U8*)s, rx->check_offset_min), |
c277df42 |
900 | (unsigned char*)strend, |
411d5715 |
901 | rx->check_substr, 0))) |
a0d0e21e |
902 | goto nope; |
3280af22 |
903 | else if ((rx->reganch & ROPT_CHECK_ALL) && !PL_sawampersand) |
a0d0e21e |
904 | goto yup; |
ee027f1d |
905 | if (s && rx->check_offset_max < s - t) { |
d9f97599 |
906 | ++BmUSEFUL(rx->check_substr); |
dfe13c55 |
907 | s = (char*)HOP((U8*)s, -rx->check_offset_max); |
a0d0e21e |
908 | } |
909 | else |
910 | s = t; |
911 | } |
c277df42 |
912 | /* Now checkstring is fixed, i.e. at fixed offset from the |
913 | beginning of match, and the match is anchored at s. */ |
3280af22 |
914 | else if (!PL_multiline) { /* Anchored near beginning of string. */ |
c277df42 |
915 | I32 slen; |
dfe13c55 |
916 | char *b = (char*)HOP((U8*)s, rx->check_offset_min); |
a0ed51b3 |
917 | if (*SvPVX(rx->check_substr) != *b |
d9f97599 |
918 | || ((slen = SvCUR(rx->check_substr)) > 1 |
a0ed51b3 |
919 | && memNE(SvPVX(rx->check_substr), b, slen))) |
bbce6d69 |
920 | goto nope; |
a0d0e21e |
921 | } |
a0ed51b3 |
922 | if (!(rx->reganch & ROPT_NAUGHTY) && --BmUSEFUL(rx->check_substr) < 0 |
d9f97599 |
923 | && rx->check_substr == rx->float_substr) { |
924 | SvREFCNT_dec(rx->check_substr); |
925 | rx->check_substr = Nullsv; /* opt is being useless */ |
926 | rx->float_substr = Nullsv; |
a0d0e21e |
927 | } |
928 | } |
15e52e56 |
929 | if (CALLREGEXEC(rx, s, strend, truebase, minmatch, |
c277df42 |
930 | screamer, NULL, safebase)) |
bbce6d69 |
931 | { |
3280af22 |
932 | PL_curpm = pm; |
a0d0e21e |
933 | if (pm->op_pmflags & PMf_ONCE) |
48c036b1 |
934 | pm->op_pmdynflags |= PMdf_USED; |
a0d0e21e |
935 | goto gotcha; |
936 | } |
937 | else |
938 | goto ret_no; |
939 | /*NOTREACHED*/ |
940 | |
941 | gotcha: |
72311751 |
942 | if (rxtainted) |
943 | RX_MATCH_TAINTED_on(rx); |
944 | TAINT_IF(RX_MATCH_TAINTED(rx)); |
a0d0e21e |
945 | if (gimme == G_ARRAY) { |
946 | I32 iters, i, len; |
947 | |
d9f97599 |
948 | iters = rx->nparens; |
a0d0e21e |
949 | if (global && !iters) |
950 | i = 1; |
951 | else |
952 | i = 0; |
c277df42 |
953 | SPAGAIN; /* EVAL blocks could move the stack. */ |
a0d0e21e |
954 | EXTEND(SP, iters + i); |
bbce6d69 |
955 | EXTEND_MORTAL(iters + i); |
a0d0e21e |
956 | for (i = !i; i <= iters; i++) { |
957 | PUSHs(sv_newmortal()); |
958 | /*SUPPRESS 560*/ |
d9f97599 |
959 | if ((s = rx->startp[i]) && rx->endp[i] ) { |
960 | len = rx->endp[i] - s; |
a0d0e21e |
961 | sv_setpvn(*SP, s, len); |
962 | } |
963 | } |
964 | if (global) { |
d9f97599 |
965 | truebase = rx->subbeg; |
966 | strend = rx->subend; |
967 | if (rx->startp[0] && rx->startp[0] == rx->endp[0]) |
968 | ++rx->endp[0]; |
c277df42 |
969 | PUTBACK; /* EVAL blocks may use stack */ |
a0d0e21e |
970 | goto play_it_again; |
971 | } |
f7e33566 |
972 | else if (!iters) |
bde848c5 |
973 | XPUSHs(&PL_sv_yes); |
4633a7c4 |
974 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
975 | RETURN; |
976 | } |
977 | else { |
978 | if (global) { |
979 | MAGIC* mg = 0; |
980 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
981 | mg = mg_find(TARG, 'g'); |
982 | if (!mg) { |
983 | sv_magic(TARG, (SV*)0, 'g', Nullch, 0); |
984 | mg = mg_find(TARG, 'g'); |
985 | } |
d9f97599 |
986 | if (rx->startp[0]) { |
987 | mg->mg_len = rx->endp[0] - rx->subbeg; |
988 | if (rx->startp[0] == rx->endp[0]) |
748a9306 |
989 | mg->mg_flags |= MGf_MINMATCH; |
990 | else |
991 | mg->mg_flags &= ~MGf_MINMATCH; |
992 | } |
a0d0e21e |
993 | } |
4633a7c4 |
994 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
995 | RETPUSHYES; |
996 | } |
997 | |
c277df42 |
998 | yup: /* Confirmed by check_substr */ |
72311751 |
999 | if (rxtainted) |
1000 | RX_MATCH_TAINTED_on(rx); |
1001 | TAINT_IF(RX_MATCH_TAINTED(rx)); |
d9f97599 |
1002 | ++BmUSEFUL(rx->check_substr); |
3280af22 |
1003 | PL_curpm = pm; |
a0d0e21e |
1004 | if (pm->op_pmflags & PMf_ONCE) |
48c036b1 |
1005 | pm->op_pmdynflags |= PMdf_USED; |
d9f97599 |
1006 | Safefree(rx->subbase); |
1007 | rx->subbase = Nullch; |
a0d0e21e |
1008 | if (global) { |
d9f97599 |
1009 | rx->subbeg = truebase; |
1010 | rx->subend = strend; |
1011 | rx->startp[0] = s; |
1012 | rx->endp[0] = s + SvCUR(rx->check_substr); |
a0d0e21e |
1013 | goto gotcha; |
1014 | } |
3280af22 |
1015 | if (PL_sawampersand) { |
a0d0e21e |
1016 | char *tmps; |
1017 | |
d9f97599 |
1018 | tmps = rx->subbase = savepvn(t, strend-t); |
1019 | rx->subbeg = tmps; |
1020 | rx->subend = tmps + (strend-t); |
1021 | tmps = rx->startp[0] = tmps + (s - t); |
1022 | rx->endp[0] = tmps + SvCUR(rx->check_substr); |
a0d0e21e |
1023 | } |
4633a7c4 |
1024 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1025 | RETPUSHYES; |
1026 | |
1027 | nope: |
d9f97599 |
1028 | if (rx->check_substr) |
1029 | ++BmUSEFUL(rx->check_substr); |
a0d0e21e |
1030 | |
1031 | ret_no: |
c90c0ff4 |
1032 | if (global && !(pm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e |
1033 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
1034 | MAGIC* mg = mg_find(TARG, 'g'); |
1035 | if (mg) |
565764a8 |
1036 | mg->mg_len = -1; |
a0d0e21e |
1037 | } |
1038 | } |
4633a7c4 |
1039 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1040 | if (gimme == G_ARRAY) |
1041 | RETURN; |
1042 | RETPUSHNO; |
1043 | } |
1044 | |
1045 | OP * |
8ac85365 |
1046 | do_readline(void) |
a0d0e21e |
1047 | { |
1048 | dSP; dTARGETSTACKED; |
1049 | register SV *sv; |
1050 | STRLEN tmplen = 0; |
1051 | STRLEN offset; |
760ac839 |
1052 | PerlIO *fp; |
3280af22 |
1053 | register IO *io = GvIO(PL_last_in_gv); |
533c011a |
1054 | register I32 type = PL_op->op_type; |
54310121 |
1055 | I32 gimme = GIMME_V; |
e79b0511 |
1056 | MAGIC *mg; |
a0d0e21e |
1057 | |
3280af22 |
1058 | if (SvRMAGICAL(PL_last_in_gv) && (mg = mg_find((SV*)PL_last_in_gv, 'q'))) { |
e79b0511 |
1059 | PUSHMARK(SP); |
1060 | XPUSHs(mg->mg_obj); |
1061 | PUTBACK; |
1062 | ENTER; |
54310121 |
1063 | perl_call_method("READLINE", gimme); |
e79b0511 |
1064 | LEAVE; |
1065 | SPAGAIN; |
54310121 |
1066 | if (gimme == G_SCALAR) |
1067 | SvSetMagicSV_nosteal(TARG, TOPs); |
e79b0511 |
1068 | RETURN; |
1069 | } |
a0d0e21e |
1070 | fp = Nullfp; |
1071 | if (io) { |
1072 | fp = IoIFP(io); |
1073 | if (!fp) { |
1074 | if (IoFLAGS(io) & IOf_ARGV) { |
1075 | if (IoFLAGS(io) & IOf_START) { |
1076 | IoFLAGS(io) &= ~IOf_START; |
1077 | IoLINES(io) = 0; |
3280af22 |
1078 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
9d116dd7 |
1079 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 |
1080 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1081 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d |
1082 | fp = IoIFP(io); |
1083 | goto have_fp; |
a0d0e21e |
1084 | } |
1085 | } |
3280af22 |
1086 | fp = nextargv(PL_last_in_gv); |
a0d0e21e |
1087 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 |
1088 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e |
1089 | IoFLAGS(io) |= IOf_START; |
1090 | } |
1091 | } |
1092 | else if (type == OP_GLOB) { |
1093 | SV *tmpcmd = NEWSV(55, 0); |
1094 | SV *tmpglob = POPs; |
1095 | ENTER; |
1096 | SAVEFREESV(tmpcmd); |
1097 | #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */ |
1098 | /* since spawning off a process is a real performance hit */ |
1099 | { |
1100 | #include <descrip.h> |
1101 | #include <lib$routines.h> |
1102 | #include <nam.h> |
1103 | #include <rmsdef.h> |
1104 | char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'}; |
1105 | char vmsspec[NAM$C_MAXRSS+1]; |
1106 | char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp; |
1107 | char tmpfnam[L_tmpnam] = "SYS$SCRATCH:"; |
1108 | $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;"); |
760ac839 |
1109 | PerlIO *tmpfp; |
a0d0e21e |
1110 | STRLEN i; |
1111 | struct dsc$descriptor_s wilddsc |
1112 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; |
1113 | struct dsc$descriptor_vs rsdsc |
1114 | = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt}; |
1115 | unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0; |
1116 | |
1117 | /* We could find out if there's an explicit dev/dir or version |
1118 | by peeking into lib$find_file's internal context at |
1119 | ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb |
1120 | but that's unsupported, so I don't want to do it now and |
1121 | have it bite someone in the future. */ |
6ad3d225 |
1122 | strcat(tmpfnam,PerlLIO_tmpnam(NULL)); |
a0d0e21e |
1123 | cp = SvPV(tmpglob,i); |
1124 | for (; i; i--) { |
1125 | if (cp[i] == ';') hasver = 1; |
1126 | if (cp[i] == '.') { |
1127 | if (sts) hasver = 1; |
1128 | else sts = 1; |
1129 | } |
1130 | if (cp[i] == '/') { |
1131 | hasdir = isunix = 1; |
1132 | break; |
748a9306 |
1133 | } |
a0d0e21e |
1134 | if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') { |
1135 | hasdir = 1; |
1136 | break; |
1137 | } |
1138 | } |
760ac839 |
1139 | if ((tmpfp = PerlIO_open(tmpfnam,"w+","fop=dlt")) != NULL) { |
09b7f37c |
1140 | Stat_t st; |
c6ed36e1 |
1141 | if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode)) |
09b7f37c |
1142 | ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL); |
1143 | else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL); |
a0d0e21e |
1144 | if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer); |
1145 | while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt, |
1146 | &dfltdsc,NULL,NULL,NULL))&1)) { |
1147 | end = rstr + (unsigned long int) *rslt; |
1148 | if (!hasver) while (*end != ';') end--; |
1149 | *(end++) = '\n'; *end = '\0'; |
1150 | for (cp = rstr; *cp; cp++) *cp = _tolower(*cp); |
1151 | if (hasdir) { |
f86702cc |
1152 | if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1); |
a0d0e21e |
1153 | begin = rstr; |
1154 | } |
1155 | else { |
1156 | begin = end; |
1157 | while (*(--begin) != ']' && *begin != '>') ; |
1158 | ++begin; |
1159 | } |
760ac839 |
1160 | ok = (PerlIO_puts(tmpfp,begin) != EOF); |
a0d0e21e |
1161 | } |
1162 | if (cxt) (void)lib$find_file_end(&cxt); |
748a9306 |
1163 | if (ok && sts != RMS$_NMF && |
1164 | sts != RMS$_DNF && sts != RMS$_FNF) ok = 0; |
a0d0e21e |
1165 | if (!ok) { |
c07a80fd |
1166 | if (!(sts & 1)) { |
1167 | SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts); |
1168 | } |
760ac839 |
1169 | PerlIO_close(tmpfp); |
a0d0e21e |
1170 | fp = NULL; |
1171 | } |
1172 | else { |
760ac839 |
1173 | PerlIO_rewind(tmpfp); |
a0d0e21e |
1174 | IoTYPE(io) = '<'; |
1175 | IoIFP(io) = fp = tmpfp; |
1e422769 |
1176 | IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */ |
a0d0e21e |
1177 | } |
1178 | } |
1179 | } |
1180 | #else /* !VMS */ |
1181 | #ifdef DOSISH |
67955e0c |
1182 | #ifdef OS2 |
1183 | sv_setpv(tmpcmd, "for a in "); |
1184 | sv_catsv(tmpcmd, tmpglob); |
1185 | sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |"); |
1186 | #else |
39e571d4 |
1187 | #ifdef DJGPP |
1188 | sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */ |
1189 | sv_catsv(tmpcmd, tmpglob); |
1190 | #else |
a0d0e21e |
1191 | sv_setpv(tmpcmd, "perlglob "); |
1192 | sv_catsv(tmpcmd, tmpglob); |
1193 | sv_catpv(tmpcmd, " |"); |
39e571d4 |
1194 | #endif /* !DJGPP */ |
67955e0c |
1195 | #endif /* !OS2 */ |
1196 | #else /* !DOSISH */ |
1197 | #if defined(CSH) |
3280af22 |
1198 | sv_setpvn(tmpcmd, PL_cshname, PL_cshlen); |
a0d0e21e |
1199 | sv_catpv(tmpcmd, " -cf 'set nonomatch; glob "); |
1200 | sv_catsv(tmpcmd, tmpglob); |
16d20bd9 |
1201 | sv_catpv(tmpcmd, "' 2>/dev/null |"); |
a0d0e21e |
1202 | #else |
1203 | sv_setpv(tmpcmd, "echo "); |
1204 | sv_catsv(tmpcmd, tmpglob); |
1205 | #if 'z' - 'a' == 25 |
1206 | sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|"); |
1207 | #else |
1208 | sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|"); |
1209 | #endif |
1210 | #endif /* !CSH */ |
67955e0c |
1211 | #endif /* !DOSISH */ |
3280af22 |
1212 | (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd), |
9d116dd7 |
1213 | FALSE, O_RDONLY, 0, Nullfp); |
a0d0e21e |
1214 | fp = IoIFP(io); |
1215 | #endif /* !VMS */ |
1216 | LEAVE; |
1217 | } |
1218 | } |
1219 | else if (type == OP_GLOB) |
1220 | SP--; |
1221 | } |
1222 | if (!fp) { |
599cee73 |
1223 | if (ckWARN(WARN_CLOSED) && io && !(IoFLAGS(io) & IOf_START)) |
1224 | warner(WARN_CLOSED, |
1225 | "Read on closed filehandle <%s>", GvENAME(PL_last_in_gv)); |
54310121 |
1226 | if (gimme == G_SCALAR) { |
a0d0e21e |
1227 | (void)SvOK_off(TARG); |
1228 | PUSHTARG; |
1229 | } |
1230 | RETURN; |
1231 | } |
a2008d6d |
1232 | have_fp: |
54310121 |
1233 | if (gimme == G_SCALAR) { |
a0d0e21e |
1234 | sv = TARG; |
9607fc9c |
1235 | if (SvROK(sv)) |
1236 | sv_unref(sv); |
a0d0e21e |
1237 | (void)SvUPGRADE(sv, SVt_PV); |
1238 | tmplen = SvLEN(sv); /* remember if already alloced */ |
1239 | if (!tmplen) |
1240 | Sv_Grow(sv, 80); /* try short-buffering it */ |
1241 | if (type == OP_RCATLINE) |
1242 | offset = SvCUR(sv); |
1243 | else |
1244 | offset = 0; |
1245 | } |
54310121 |
1246 | else { |
1247 | sv = sv_2mortal(NEWSV(57, 80)); |
1248 | offset = 0; |
1249 | } |
a0d0e21e |
1250 | for (;;) { |
1251 | if (!sv_gets(sv, fp, offset)) { |
760ac839 |
1252 | PerlIO_clearerr(fp); |
a0d0e21e |
1253 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 |
1254 | fp = nextargv(PL_last_in_gv); |
a0d0e21e |
1255 | if (fp) |
1256 | continue; |
3280af22 |
1257 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e |
1258 | IoFLAGS(io) |= IOf_START; |
1259 | } |
1260 | else if (type == OP_GLOB) { |
4eb79ab5 |
1261 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_CLOSED)) { |
1262 | warner(WARN_CLOSED, |
1263 | "glob failed (child exited with status %d%s)", |
1264 | STATUS_CURRENT >> 8, |
1265 | (STATUS_CURRENT & 0xFF) ? ", core dumped" : ""); |
1266 | } |
a0d0e21e |
1267 | } |
54310121 |
1268 | if (gimme == G_SCALAR) { |
a0d0e21e |
1269 | (void)SvOK_off(TARG); |
1270 | PUSHTARG; |
1271 | } |
1272 | RETURN; |
1273 | } |
bbce6d69 |
1274 | /* This should not be marked tainted if the fp is marked clean */ |
1275 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { |
1276 | TAINT; |
1277 | SvTAINTED_on(sv); |
1278 | } |
a0d0e21e |
1279 | IoLINES(io)++; |
71be2cbc |
1280 | SvSETMAGIC(sv); |
a0d0e21e |
1281 | XPUSHs(sv); |
a0d0e21e |
1282 | if (type == OP_GLOB) { |
1283 | char *tmps; |
1284 | |
3280af22 |
1285 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd |
1286 | tmps = SvEND(sv) - 1; |
3280af22 |
1287 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd |
1288 | *tmps = '\0'; |
1289 | SvCUR(sv)--; |
1290 | } |
1291 | } |
a0d0e21e |
1292 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1293 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && |
1294 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) |
1295 | break; |
3280af22 |
1296 | if (*tmps && PerlLIO_stat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e |
1297 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1298 | continue; |
1299 | } |
1300 | } |
54310121 |
1301 | if (gimme == G_ARRAY) { |
a0d0e21e |
1302 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1303 | SvLEN_set(sv, SvCUR(sv)+1); |
1304 | Renew(SvPVX(sv), SvLEN(sv), char); |
1305 | } |
1306 | sv = sv_2mortal(NEWSV(58, 80)); |
1307 | continue; |
1308 | } |
54310121 |
1309 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e |
1310 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1311 | if (SvCUR(sv) < 60) |
1312 | SvLEN_set(sv, 80); |
1313 | else |
1314 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ |
1315 | Renew(SvPVX(sv), SvLEN(sv), char); |
1316 | } |
1317 | RETURN; |
1318 | } |
1319 | } |
1320 | |
1321 | PP(pp_enter) |
1322 | { |
4e35701f |
1323 | djSP; |
c09156bb |
1324 | register PERL_CONTEXT *cx; |
533c011a |
1325 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e |
1326 | |
54310121 |
1327 | if (gimme == -1) { |
1328 | if (cxstack_ix >= 0) |
1329 | gimme = cxstack[cxstack_ix].blk_gimme; |
1330 | else |
1331 | gimme = G_SCALAR; |
1332 | } |
a0d0e21e |
1333 | |
1334 | ENTER; |
1335 | |
1336 | SAVETMPS; |
924508f0 |
1337 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e |
1338 | |
1339 | RETURN; |
1340 | } |
1341 | |
1342 | PP(pp_helem) |
1343 | { |
4e35701f |
1344 | djSP; |
760ac839 |
1345 | HE* he; |
ae77835f |
1346 | SV **svp; |
a0d0e21e |
1347 | SV *keysv = POPs; |
a0d0e21e |
1348 | HV *hv = (HV*)POPs; |
533c011a |
1349 | U32 lval = PL_op->op_flags & OPf_MOD; |
1350 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
be6c24e0 |
1351 | SV *sv; |
a0d0e21e |
1352 | |
ae77835f |
1353 | if (SvTYPE(hv) == SVt_PVHV) { |
1354 | he = hv_fetch_ent(hv, keysv, lval && !defer, 0); |
97fcbf96 |
1355 | svp = he ? &HeVAL(he) : 0; |
ae77835f |
1356 | } |
1357 | else if (SvTYPE(hv) == SVt_PVAV) { |
0ebe0038 |
1358 | if (PL_op->op_private & OPpLVAL_INTRO) |
1359 | DIE("Can't localize pseudo-hash element"); |
97fcbf96 |
1360 | svp = avhv_fetch_ent((AV*)hv, keysv, lval && !defer, 0); |
ae77835f |
1361 | } |
c750a3ec |
1362 | else { |
a0d0e21e |
1363 | RETPUSHUNDEF; |
c750a3ec |
1364 | } |
a0d0e21e |
1365 | if (lval) { |
3280af22 |
1366 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 |
1367 | SV* lv; |
1368 | SV* key2; |
1369 | if (!defer) |
3280af22 |
1370 | DIE(no_helem, SvPV(keysv, PL_na)); |
68dc0745 |
1371 | lv = sv_newmortal(); |
1372 | sv_upgrade(lv, SVt_PVLV); |
1373 | LvTYPE(lv) = 'y'; |
1374 | sv_magic(lv, key2 = newSVsv(keysv), 'y', Nullch, 0); |
1375 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
1376 | LvTARG(lv) = SvREFCNT_inc(hv); |
1377 | LvTARGLEN(lv) = 1; |
1378 | PUSHs(lv); |
1379 | RETURN; |
1380 | } |
533c011a |
1381 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f |
1382 | if (HvNAME(hv) && isGV(*svp)) |
533c011a |
1383 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
5f05dabc |
1384 | else |
161b7d16 |
1385 | save_helem(hv, keysv, svp); |
5f05dabc |
1386 | } |
533c011a |
1387 | else if (PL_op->op_private & OPpDEREF) |
1388 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); |
a0d0e21e |
1389 | } |
3280af22 |
1390 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 |
1391 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1392 | * Pushing the magical RHS on to the stack is useless, since |
1393 | * that magic is soon destined to be misled by the local(), |
1394 | * and thus the later pp_sassign() will fail to mg_get() the |
1395 | * old value. This should also cure problems with delayed |
1396 | * mg_get()s. GSAR 98-07-03 */ |
1397 | if (!lval && SvGMAGICAL(sv)) |
1398 | sv = sv_mortalcopy(sv); |
1399 | PUSHs(sv); |
a0d0e21e |
1400 | RETURN; |
1401 | } |
1402 | |
1403 | PP(pp_leave) |
1404 | { |
4e35701f |
1405 | djSP; |
c09156bb |
1406 | register PERL_CONTEXT *cx; |
a0d0e21e |
1407 | register SV **mark; |
1408 | SV **newsp; |
1409 | PMOP *newpm; |
1410 | I32 gimme; |
1411 | |
533c011a |
1412 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e |
1413 | cx = &cxstack[cxstack_ix]; |
3280af22 |
1414 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e |
1415 | } |
1416 | |
1417 | POPBLOCK(cx,newpm); |
1418 | |
533c011a |
1419 | gimme = OP_GIMME(PL_op, -1); |
54310121 |
1420 | if (gimme == -1) { |
1421 | if (cxstack_ix >= 0) |
1422 | gimme = cxstack[cxstack_ix].blk_gimme; |
1423 | else |
1424 | gimme = G_SCALAR; |
1425 | } |
a0d0e21e |
1426 | |
a1f49e72 |
1427 | TAINT_NOT; |
54310121 |
1428 | if (gimme == G_VOID) |
1429 | SP = newsp; |
1430 | else if (gimme == G_SCALAR) { |
1431 | MARK = newsp + 1; |
1432 | if (MARK <= SP) |
1433 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1434 | *MARK = TOPs; |
1435 | else |
1436 | *MARK = sv_mortalcopy(TOPs); |
a0d0e21e |
1437 | else { |
54310121 |
1438 | MEXTEND(mark,0); |
3280af22 |
1439 | *MARK = &PL_sv_undef; |
a0d0e21e |
1440 | } |
54310121 |
1441 | SP = MARK; |
a0d0e21e |
1442 | } |
54310121 |
1443 | else if (gimme == G_ARRAY) { |
a1f49e72 |
1444 | /* in case LEAVE wipes old return values */ |
1445 | for (mark = newsp + 1; mark <= SP; mark++) { |
1446 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { |
a0d0e21e |
1447 | *mark = sv_mortalcopy(*mark); |
a1f49e72 |
1448 | TAINT_NOT; /* Each item is independent */ |
1449 | } |
1450 | } |
a0d0e21e |
1451 | } |
3280af22 |
1452 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e |
1453 | |
1454 | LEAVE; |
1455 | |
1456 | RETURN; |
1457 | } |
1458 | |
1459 | PP(pp_iter) |
1460 | { |
4e35701f |
1461 | djSP; |
c09156bb |
1462 | register PERL_CONTEXT *cx; |
5f05dabc |
1463 | SV* sv; |
4633a7c4 |
1464 | AV* av; |
a0d0e21e |
1465 | |
924508f0 |
1466 | EXTEND(SP, 1); |
a0d0e21e |
1467 | cx = &cxstack[cxstack_ix]; |
6b35e009 |
1468 | if (CxTYPE(cx) != CXt_LOOP) |
a0d0e21e |
1469 | DIE("panic: pp_iter"); |
1470 | |
4633a7c4 |
1471 | av = cx->blk_loop.iterary; |
89ea2908 |
1472 | if (SvTYPE(av) != SVt_PVAV) { |
1473 | /* iterate ($min .. $max) */ |
1474 | if (cx->blk_loop.iterlval) { |
1475 | /* string increment */ |
1476 | register SV* cur = cx->blk_loop.iterlval; |
1477 | STRLEN maxlen; |
1478 | char *max = SvPV((SV*)av, maxlen); |
1479 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
eaa5c2d6 |
1480 | #ifndef USE_THREADS /* don't risk potential race */ |
39ca2bb7 |
1481 | if (SvREFCNT(*cx->blk_loop.itervar) == 1 |
1482 | && !SvMAGICAL(*cx->blk_loop.itervar)) |
1483 | { |
eaa5c2d6 |
1484 | /* safe to reuse old SV */ |
1485 | sv_setsv(*cx->blk_loop.itervar, cur); |
1486 | } |
1487 | else |
1488 | #endif |
1489 | { |
1490 | /* we need a fresh SV every time so that loop body sees a |
1491 | * completely new SV for closures/references to work as |
1492 | * they used to */ |
1493 | SvREFCNT_dec(*cx->blk_loop.itervar); |
1494 | *cx->blk_loop.itervar = newSVsv(cur); |
1495 | } |
89ea2908 |
1496 | if (strEQ(SvPVX(cur), max)) |
1497 | sv_setiv(cur, 0); /* terminate next time */ |
1498 | else |
1499 | sv_inc(cur); |
1500 | RETPUSHYES; |
1501 | } |
1502 | RETPUSHNO; |
1503 | } |
1504 | /* integer increment */ |
1505 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) |
1506 | RETPUSHNO; |
7f61b687 |
1507 | |
eaa5c2d6 |
1508 | #ifndef USE_THREADS /* don't risk potential race */ |
39ca2bb7 |
1509 | if (SvREFCNT(*cx->blk_loop.itervar) == 1 |
1510 | && !SvMAGICAL(*cx->blk_loop.itervar)) |
1511 | { |
eaa5c2d6 |
1512 | /* safe to reuse old SV */ |
1513 | sv_setiv(*cx->blk_loop.itervar, cx->blk_loop.iterix++); |
1514 | } |
1515 | else |
1516 | #endif |
1517 | { |
1518 | /* we need a fresh SV every time so that loop body sees a |
1519 | * completely new SV for closures/references to work as they |
1520 | * used to */ |
1521 | SvREFCNT_dec(*cx->blk_loop.itervar); |
1522 | *cx->blk_loop.itervar = newSViv(cx->blk_loop.iterix++); |
1523 | } |
89ea2908 |
1524 | RETPUSHYES; |
1525 | } |
1526 | |
1527 | /* iterate array */ |
3280af22 |
1528 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) |
4633a7c4 |
1529 | RETPUSHNO; |
a0d0e21e |
1530 | |
7a4c00b4 |
1531 | SvREFCNT_dec(*cx->blk_loop.itervar); |
a0d0e21e |
1532 | |
93965878 |
1533 | if (sv = (SvMAGICAL(av)) |
1534 | ? *av_fetch(av, ++cx->blk_loop.iterix, FALSE) |
1535 | : AvARRAY(av)[++cx->blk_loop.iterix]) |
a0d0e21e |
1536 | SvTEMP_off(sv); |
a0d0e21e |
1537 | else |
3280af22 |
1538 | sv = &PL_sv_undef; |
1539 | if (av != PL_curstack && SvIMMORTAL(sv)) { |
5f05dabc |
1540 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc |
1541 | if (lv && SvREFCNT(lv) > 1) { |
1542 | SvREFCNT_dec(lv); |
1543 | lv = Nullsv; |
1544 | } |
5f05dabc |
1545 | if (lv) |
1546 | SvREFCNT_dec(LvTARG(lv)); |
1547 | else { |
68dc0745 |
1548 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc |
1549 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc |
1550 | LvTYPE(lv) = 'y'; |
68dc0745 |
1551 | sv_magic(lv, Nullsv, 'y', Nullch, 0); |
5f05dabc |
1552 | } |
1553 | LvTARG(lv) = SvREFCNT_inc(av); |
1554 | LvTARGOFF(lv) = cx->blk_loop.iterix; |
8ac85365 |
1555 | LvTARGLEN(lv) = (UV) -1; |
5f05dabc |
1556 | sv = (SV*)lv; |
1557 | } |
a0d0e21e |
1558 | |
7a4c00b4 |
1559 | *cx->blk_loop.itervar = SvREFCNT_inc(sv); |
a0d0e21e |
1560 | RETPUSHYES; |
1561 | } |
1562 | |
1563 | PP(pp_subst) |
1564 | { |
4e35701f |
1565 | djSP; dTARG; |
a0d0e21e |
1566 | register PMOP *pm = cPMOP; |
1567 | PMOP *rpm = pm; |
1568 | register SV *dstr; |
1569 | register char *s; |
1570 | char *strend; |
1571 | register char *m; |
1572 | char *c; |
1573 | register char *d; |
1574 | STRLEN clen; |
1575 | I32 iters = 0; |
1576 | I32 maxiters; |
1577 | register I32 i; |
1578 | bool once; |
71be2cbc |
1579 | bool rxtainted; |
a0d0e21e |
1580 | char *orig; |
1581 | I32 safebase; |
d9f97599 |
1582 | register REGEXP *rx = pm->op_pmregexp; |
a0d0e21e |
1583 | STRLEN len; |
1584 | int force_on_match = 0; |
3280af22 |
1585 | I32 oldsave = PL_savestack_ix; |
c277df42 |
1586 | I32 update_minmatch = 1; |
1587 | SV *screamer; |
a0d0e21e |
1588 | |
5cd24f17 |
1589 | /* known replacement string? */ |
1590 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; |
533c011a |
1591 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
1592 | TARG = POPs; |
1593 | else { |
54b9620d |
1594 | TARG = DEFSV; |
a0d0e21e |
1595 | EXTEND(SP,1); |
8ec5e241 |
1596 | } |
68dc0745 |
1597 | if (SvREADONLY(TARG) |
1598 | || (SvTYPE(TARG) > SVt_PVLV |
1599 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG)))) |
1600 | croak(no_modify); |
8ec5e241 |
1601 | PUTBACK; |
1602 | |
a0d0e21e |
1603 | s = SvPV(TARG, len); |
68dc0745 |
1604 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e |
1605 | force_on_match = 1; |
b3eb6a9b |
1606 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 |
1607 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
1608 | if (PL_tainted) |
b3eb6a9b |
1609 | rxtainted |= 2; |
9212bbba |
1610 | TAINT_NOT; |
a0d0e21e |
1611 | |
1612 | force_it: |
1613 | if (!pm || !s) |
1614 | DIE("panic: do_subst"); |
1615 | |
1616 | strend = s + len; |
2beec16e |
1617 | maxiters = 2*(strend - s) + 10; /* We can match twice at each |
1618 | position, once with zero-length, |
1619 | second time with non-zero. */ |
a0d0e21e |
1620 | |
3280af22 |
1621 | if (!rx->prelen && PL_curpm) { |
1622 | pm = PL_curpm; |
d9f97599 |
1623 | rx = pm->op_pmregexp; |
a0d0e21e |
1624 | } |
d9f97599 |
1625 | screamer = ( (SvSCREAM(TARG) && rx->check_substr |
1626 | && SvTYPE(rx->check_substr) == SVt_PVBM |
1627 | && SvVALID(rx->check_substr)) |
c277df42 |
1628 | ? TARG : Nullsv); |
9d080a66 |
1629 | safebase = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
1630 | ? REXEC_COPY_STR : 0; |
a0d0e21e |
1631 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 |
1632 | SAVEINT(PL_multiline); |
1633 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; |
a0d0e21e |
1634 | } |
1635 | orig = m = s; |
d9f97599 |
1636 | if (rx->check_substr) { |
1637 | if (!(rx->reganch & ROPT_NOSCAN)) { /* It floats. */ |
c277df42 |
1638 | if (screamer) { |
1639 | I32 p = -1; |
a0ed51b3 |
1640 | char *b; |
c277df42 |
1641 | |
3280af22 |
1642 | if (PL_screamfirst[BmRARE(rx->check_substr)] < 0) |
a0d0e21e |
1643 | goto nope; |
a0ed51b3 |
1644 | |
dfe13c55 |
1645 | b = (char*)HOP((U8*)s, rx->check_offset_min); |
a0ed51b3 |
1646 | if (!(s = screaminstr(TARG, rx->check_substr, b - s, 0, &p, 0))) |
a0d0e21e |
1647 | goto nope; |
1648 | } |
a0ed51b3 |
1649 | else if (!(s = fbm_instr((unsigned char*)HOP((U8*)s, rx->check_offset_min), |
c277df42 |
1650 | (unsigned char*)strend, |
411d5715 |
1651 | rx->check_substr, 0))) |
a0d0e21e |
1652 | goto nope; |
d9f97599 |
1653 | if (s && rx->check_offset_max < s - m) { |
1654 | ++BmUSEFUL(rx->check_substr); |
dfe13c55 |
1655 | s = (char*)HOP((U8*)s, -rx->check_offset_max); |
a0d0e21e |
1656 | } |
1657 | else |
1658 | s = m; |
1659 | } |
c277df42 |
1660 | /* Now checkstring is fixed, i.e. at fixed offset from the |
1661 | beginning of match, and the match is anchored at s. */ |
3280af22 |
1662 | else if (!PL_multiline) { /* Anchored at beginning of string. */ |
c277df42 |
1663 | I32 slen; |
dfe13c55 |
1664 | char *b = (char*)HOP((U8*)s, rx->check_offset_min); |
a0ed51b3 |
1665 | if (*SvPVX(rx->check_substr) != *b |
d9f97599 |
1666 | || ((slen = SvCUR(rx->check_substr)) > 1 |
a0ed51b3 |
1667 | && memNE(SvPVX(rx->check_substr), b, slen))) |
bbce6d69 |
1668 | goto nope; |
a0d0e21e |
1669 | } |
a0ed51b3 |
1670 | if (!(rx->reganch & ROPT_NAUGHTY) && --BmUSEFUL(rx->check_substr) < 0 |
d9f97599 |
1671 | && rx->check_substr == rx->float_substr) { |
1672 | SvREFCNT_dec(rx->check_substr); |
1673 | rx->check_substr = Nullsv; /* opt is being useless */ |
1674 | rx->float_substr = Nullsv; |
a0d0e21e |
1675 | } |
1676 | } |
71be2cbc |
1677 | |
1678 | /* only replace once? */ |
a0d0e21e |
1679 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc |
1680 | |
1681 | /* known replacement string? */ |
5cd24f17 |
1682 | c = dstr ? SvPV(dstr, clen) : Nullch; |
71be2cbc |
1683 | |
1684 | /* can do inplace substitution? */ |
d9f97599 |
1685 | if (c && clen <= rx->minlen && (once || !(safebase & REXEC_COPY_STR)) |
1686 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN)) { |
15e52e56 |
1687 | if (!CALLREGEXEC(rx, s, strend, orig, 0, screamer, NULL, safebase)) { |
8ec5e241 |
1688 | SPAGAIN; |
3280af22 |
1689 | PUSHs(&PL_sv_no); |
71be2cbc |
1690 | LEAVE_SCOPE(oldsave); |
1691 | RETURN; |
1692 | } |
1693 | if (force_on_match) { |
1694 | force_on_match = 0; |
1695 | s = SvPV_force(TARG, len); |
1696 | goto force_it; |
1697 | } |
71be2cbc |
1698 | d = s; |
3280af22 |
1699 | PL_curpm = pm; |
71be2cbc |
1700 | SvSCREAM_off(TARG); /* disable possible screamer */ |
1701 | if (once) { |
48c036b1 |
1702 | rxtainted |= RX_MATCH_TAINTED(rx); |
d9f97599 |
1703 | if (rx->subbase) { |
1704 | m = orig + (rx->startp[0] - rx->subbase); |
1705 | d = orig + (rx->endp[0] - rx->subbase); |
c277df42 |
1706 | } else { |
d9f97599 |
1707 | m = rx->startp[0]; |
1708 | d = rx->endp[0]; |
c277df42 |
1709 | } |
71be2cbc |
1710 | s = orig; |
1711 | if (m - s > strend - d) { /* faster to shorten from end */ |
1712 | if (clen) { |
1713 | Copy(c, m, clen, char); |
1714 | m += clen; |
a0d0e21e |
1715 | } |
71be2cbc |
1716 | i = strend - d; |
1717 | if (i > 0) { |
1718 | Move(d, m, i, char); |
1719 | m += i; |
a0d0e21e |
1720 | } |
71be2cbc |
1721 | *m = '\0'; |
1722 | SvCUR_set(TARG, m - s); |
1723 | } |
1724 | /*SUPPRESS 560*/ |
1725 | else if (i = m - s) { /* faster from front */ |
1726 | d -= clen; |
1727 | m = d; |
1728 | sv_chop(TARG, d-i); |
1729 | s += i; |
1730 | while (i--) |
1731 | *--d = *--s; |
1732 | if (clen) |
1733 | Copy(c, m, clen, char); |
1734 | } |
1735 | else if (clen) { |
1736 | d -= clen; |
1737 | sv_chop(TARG, d); |
1738 | Copy(c, d, clen, char); |
1739 | } |
1740 | else { |
1741 | sv_chop(TARG, d); |
1742 | } |
48c036b1 |
1743 | TAINT_IF(rxtainted & 1); |
8ec5e241 |
1744 | SPAGAIN; |
3280af22 |
1745 | PUSHs(&PL_sv_yes); |
71be2cbc |
1746 | } |
1747 | else { |
71be2cbc |
1748 | do { |
1749 | if (iters++ > maxiters) |
1750 | DIE("Substitution loop"); |
d9f97599 |
1751 | rxtainted |= RX_MATCH_TAINTED(rx); |
1752 | m = rx->startp[0]; |
71be2cbc |
1753 | /*SUPPRESS 560*/ |
1754 | if (i = m - s) { |
1755 | if (s != d) |
1756 | Move(s, d, i, char); |
1757 | d += i; |
a0d0e21e |
1758 | } |
71be2cbc |
1759 | if (clen) { |
1760 | Copy(c, d, clen, char); |
1761 | d += clen; |
1762 | } |
d9f97599 |
1763 | s = rx->endp[0]; |
15e52e56 |
1764 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
c277df42 |
1765 | Nullsv, NULL, 0)); /* don't match same null twice */ |
71be2cbc |
1766 | if (s != d) { |
1767 | i = strend - s; |
1768 | SvCUR_set(TARG, d - SvPVX(TARG) + i); |
1769 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e |
1770 | } |
48c036b1 |
1771 | TAINT_IF(rxtainted & 1); |
8ec5e241 |
1772 | SPAGAIN; |
71be2cbc |
1773 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e |
1774 | } |
71be2cbc |
1775 | (void)SvPOK_only(TARG); |
48c036b1 |
1776 | TAINT_IF(rxtainted); |
8ec5e241 |
1777 | if (SvSMAGICAL(TARG)) { |
1778 | PUTBACK; |
1779 | mg_set(TARG); |
1780 | SPAGAIN; |
1781 | } |
9212bbba |
1782 | SvTAINT(TARG); |
71be2cbc |
1783 | LEAVE_SCOPE(oldsave); |
1784 | RETURN; |
a0d0e21e |
1785 | } |
71be2cbc |
1786 | |
15e52e56 |
1787 | if (CALLREGEXEC(rx, s, strend, orig, 0, screamer, NULL, safebase)) { |
a0d0e21e |
1788 | if (force_on_match) { |
1789 | force_on_match = 0; |
1790 | s = SvPV_force(TARG, len); |
1791 | goto force_it; |
1792 | } |
48c036b1 |
1793 | rxtainted |= RX_MATCH_TAINTED(rx); |
8ec5e241 |
1794 | dstr = NEWSV(25, len); |
a0d0e21e |
1795 | sv_setpvn(dstr, m, s-m); |
3280af22 |
1796 | PL_curpm = pm; |
a0d0e21e |
1797 | if (!c) { |
c09156bb |
1798 | register PERL_CONTEXT *cx; |
8ec5e241 |
1799 | SPAGAIN; |
a0d0e21e |
1800 | PUSHSUBST(cx); |
1801 | RETURNOP(cPMOP->op_pmreplroot); |
1802 | } |
1803 | do { |
1804 | if (iters++ > maxiters) |
1805 | DIE("Substitution loop"); |
d9f97599 |
1806 | rxtainted |= RX_MATCH_TAINTED(rx); |
1807 | if (rx->subbase && rx->subbase != orig) { |
a0d0e21e |
1808 | m = s; |
1809 | s = orig; |
d9f97599 |
1810 | orig = rx->subbase; |
a0d0e21e |
1811 | s = orig + (m - s); |
1812 | strend = s + (strend - m); |
1813 | } |
d9f97599 |
1814 | m = rx->startp[0]; |
a0d0e21e |
1815 | sv_catpvn(dstr, s, m-s); |
d9f97599 |
1816 | s = rx->endp[0]; |
a0d0e21e |
1817 | if (clen) |
1818 | sv_catpvn(dstr, c, clen); |
1819 | if (once) |
1820 | break; |
15e52e56 |
1821 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, Nullsv, NULL, safebase)); |
a0d0e21e |
1822 | sv_catpvn(dstr, s, strend - s); |
748a9306 |
1823 | |
4633a7c4 |
1824 | (void)SvOOK_off(TARG); |
cb0b1708 |
1825 | Safefree(SvPVX(TARG)); |
748a9306 |
1826 | SvPVX(TARG) = SvPVX(dstr); |
1827 | SvCUR_set(TARG, SvCUR(dstr)); |
1828 | SvLEN_set(TARG, SvLEN(dstr)); |
1829 | SvPVX(dstr) = 0; |
1830 | sv_free(dstr); |
1831 | |
48c036b1 |
1832 | TAINT_IF(rxtainted & 1); |
f878fbec |
1833 | SPAGAIN; |
48c036b1 |
1834 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
1835 | |
a0d0e21e |
1836 | (void)SvPOK_only(TARG); |
48c036b1 |
1837 | TAINT_IF(rxtainted); |
a0d0e21e |
1838 | SvSETMAGIC(TARG); |
9212bbba |
1839 | SvTAINT(TARG); |
4633a7c4 |
1840 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1841 | RETURN; |
1842 | } |
5cd24f17 |
1843 | goto ret_no; |
a0d0e21e |
1844 | |
1845 | nope: |
d9f97599 |
1846 | ++BmUSEFUL(rx->check_substr); |
5cd24f17 |
1847 | |
8ec5e241 |
1848 | ret_no: |
1849 | SPAGAIN; |
3280af22 |
1850 | PUSHs(&PL_sv_no); |
4633a7c4 |
1851 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1852 | RETURN; |
1853 | } |
1854 | |
1855 | PP(pp_grepwhile) |
1856 | { |
4e35701f |
1857 | djSP; |
a0d0e21e |
1858 | |
1859 | if (SvTRUEx(POPs)) |
3280af22 |
1860 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
1861 | ++*PL_markstack_ptr; |
a0d0e21e |
1862 | LEAVE; /* exit inner scope */ |
1863 | |
1864 | /* All done yet? */ |
3280af22 |
1865 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e |
1866 | I32 items; |
54310121 |
1867 | I32 gimme = GIMME_V; |
a0d0e21e |
1868 | |
1869 | LEAVE; /* exit outer scope */ |
1870 | (void)POPMARK; /* pop src */ |
3280af22 |
1871 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e |
1872 | (void)POPMARK; /* pop dst */ |
3280af22 |
1873 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 |
1874 | if (gimme == G_SCALAR) { |
a0d0e21e |
1875 | dTARGET; |
1876 | XPUSHi(items); |
a0d0e21e |
1877 | } |
54310121 |
1878 | else if (gimme == G_ARRAY) |
1879 | SP += items; |
a0d0e21e |
1880 | RETURN; |
1881 | } |
1882 | else { |
1883 | SV *src; |
1884 | |
1885 | ENTER; /* enter inner scope */ |
3280af22 |
1886 | SAVESPTR(PL_curpm); |
a0d0e21e |
1887 | |
3280af22 |
1888 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e |
1889 | SvTEMP_off(src); |
54b9620d |
1890 | DEFSV = src; |
a0d0e21e |
1891 | |
1892 | RETURNOP(cLOGOP->op_other); |
1893 | } |
1894 | } |
1895 | |
1896 | PP(pp_leavesub) |
1897 | { |
4e35701f |
1898 | djSP; |
a0d0e21e |
1899 | SV **mark; |
1900 | SV **newsp; |
1901 | PMOP *newpm; |
1902 | I32 gimme; |
c09156bb |
1903 | register PERL_CONTEXT *cx; |
f86702cc |
1904 | struct block_sub cxsub; |
a0d0e21e |
1905 | |
1906 | POPBLOCK(cx,newpm); |
f86702cc |
1907 | POPSUB1(cx); /* Delay POPSUB2 until stack values are safe */ |
1908 | |
a1f49e72 |
1909 | TAINT_NOT; |
a0d0e21e |
1910 | if (gimme == G_SCALAR) { |
1911 | MARK = newsp + 1; |
a29cdaf0 |
1912 | if (MARK <= SP) { |
1913 | if (cxsub.cv && CvDEPTH(cxsub.cv) > 1) { |
1914 | if (SvTEMP(TOPs)) { |
1915 | *MARK = SvREFCNT_inc(TOPs); |
1916 | FREETMPS; |
1917 | sv_2mortal(*MARK); |
1918 | } else { |
1919 | FREETMPS; |
1920 | *MARK = sv_mortalcopy(TOPs); |
1921 | } |
1922 | } else |
1923 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
1924 | } else { |
f86702cc |
1925 | MEXTEND(MARK, 0); |
3280af22 |
1926 | *MARK = &PL_sv_undef; |
a0d0e21e |
1927 | } |
1928 | SP = MARK; |
1929 | } |
54310121 |
1930 | else if (gimme == G_ARRAY) { |
f86702cc |
1931 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 |
1932 | if (!SvTEMP(*MARK)) { |
f86702cc |
1933 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 |
1934 | TAINT_NOT; /* Each item is independent */ |
1935 | } |
f86702cc |
1936 | } |
a0d0e21e |
1937 | } |
f86702cc |
1938 | PUTBACK; |
1939 | |
1940 | POPSUB2(); /* Stack values are safe: release CV and @_ ... */ |
3280af22 |
1941 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e |
1942 | |
1943 | LEAVE; |
a0d0e21e |
1944 | return pop_return(); |
1945 | } |
1946 | |
76e3520e |
1947 | STATIC CV * |
8ac85365 |
1948 | get_db_sub(SV **svp, CV *cv) |
3de9ffa1 |
1949 | { |
1950 | dTHR; |
3280af22 |
1951 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 |
1952 | |
1953 | if (!PERLDB_SUB_NN) { |
1954 | GV *gv = CvGV(cv); |
1955 | |
1956 | save_item(dbsv); |
1957 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) |
1958 | || strEQ(GvNAME(gv), "END") |
1959 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
1960 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) |
1961 | && (gv = (GV*)*svp) ))) { |
1962 | /* Use GV from the stack as a fallback. */ |
1963 | /* GV is potentially non-unique, or contain different CV. */ |
1964 | sv_setsv(dbsv, newRV((SV*)cv)); |
1965 | } |
1966 | else { |
1967 | gv_efullname3(dbsv, gv, Nullch); |
1968 | } |
3de9ffa1 |
1969 | } |
1970 | else { |
491527d0 |
1971 | SvUPGRADE(dbsv, SVt_PVIV); |
1972 | SvIOK_on(dbsv); |
1973 | SAVEIV(SvIVX(dbsv)); |
1974 | SvIVX(dbsv) = (IV)cv; /* Do it the quickest way */ |
3de9ffa1 |
1975 | } |
491527d0 |
1976 | |
3de9ffa1 |
1977 | if (CvXSUB(cv)) |
3280af22 |
1978 | PL_curcopdb = PL_curcop; |
1979 | cv = GvCV(PL_DBsub); |
3de9ffa1 |
1980 | return cv; |
1981 | } |
1982 | |
a0d0e21e |
1983 | PP(pp_entersub) |
1984 | { |
4e35701f |
1985 | djSP; dPOPss; |
a0d0e21e |
1986 | GV *gv; |
1987 | HV *stash; |
1988 | register CV *cv; |
c09156bb |
1989 | register PERL_CONTEXT *cx; |
5d94fbed |
1990 | I32 gimme; |
533c011a |
1991 | bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e |
1992 | |
1993 | if (!sv) |
1994 | DIE("Not a CODE reference"); |
1995 | switch (SvTYPE(sv)) { |
1996 | default: |
1997 | if (!SvROK(sv)) { |
748a9306 |
1998 | char *sym; |
1999 | |
3280af22 |
2000 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a |
2001 | if (hasargs) |
3280af22 |
2002 | SP = PL_stack_base + POPMARK; |
a0d0e21e |
2003 | RETURN; |
fb73857a |
2004 | } |
15ff848f |
2005 | if (SvGMAGICAL(sv)) { |
2006 | mg_get(sv); |
2007 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; |
2008 | } |
2009 | else |
3280af22 |
2010 | sym = SvPV(sv, PL_na); |
15ff848f |
2011 | if (!sym) |
a0d0e21e |
2012 | DIE(no_usym, "a subroutine"); |
533c011a |
2013 | if (PL_op->op_private & HINT_STRICT_REFS) |
748a9306 |
2014 | DIE(no_symref, sym, "a subroutine"); |
2015 | cv = perl_get_cv(sym, TRUE); |
a0d0e21e |
2016 | break; |
2017 | } |
2018 | cv = (CV*)SvRV(sv); |
2019 | if (SvTYPE(cv) == SVt_PVCV) |
2020 | break; |
2021 | /* FALL THROUGH */ |
2022 | case SVt_PVHV: |
2023 | case SVt_PVAV: |
2024 | DIE("Not a CODE reference"); |
2025 | case SVt_PVCV: |
2026 | cv = (CV*)sv; |
2027 | break; |
2028 | case SVt_PVGV: |
8ebc5c01 |
2029 | if (!(cv = GvCVu((GV*)sv))) |
a0d0e21e |
2030 | cv = sv_2cv(sv, &stash, &gv, TRUE); |
2031 | break; |
2032 | } |
2033 | |
2034 | ENTER; |
2035 | SAVETMPS; |
2036 | |
2037 | retry: |
2038 | if (!cv) |
2039 | DIE("Not a CODE reference"); |
2040 | |
2041 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
44a8e56a |
2042 | GV* autogv; |
22239a37 |
2043 | SV* sub_name; |
44a8e56a |
2044 | |
2045 | /* anonymous or undef'd function leaves us no recourse */ |
2046 | if (CvANON(cv) || !(gv = CvGV(cv))) |
2047 | DIE("Undefined subroutine called"); |
2048 | /* autoloaded stub? */ |
2049 | if (cv != GvCV(gv)) { |
2050 | cv = GvCV(gv); |
2051 | goto retry; |
a0d0e21e |
2052 | } |
44a8e56a |
2053 | /* should call AUTOLOAD now? */ |
54310121 |
2054 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
2055 | FALSE))) |
2056 | { |
44a8e56a |
2057 | cv = GvCV(autogv); |
2058 | goto retry; |
a0d0e21e |
2059 | } |
44a8e56a |
2060 | /* sorry */ |
22239a37 |
2061 | sub_name = sv_newmortal(); |
2062 | gv_efullname3(sub_name, gv, Nullch); |
2063 | DIE("Undefined subroutine &%s called", SvPVX(sub_name)); |
a0d0e21e |
2064 | } |
2065 | |
54310121 |
2066 | gimme = GIMME_V; |
533c011a |
2067 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) |
4f01c5a5 |
2068 | cv = get_db_sub(&sv, cv); |
3de9ffa1 |
2069 | if (!cv) |
2070 | DIE("No DBsub routine"); |
a0d0e21e |
2071 | |
11343788 |
2072 | #ifdef USE_THREADS |
3de9ffa1 |
2073 | /* |
2074 | * First we need to check if the sub or method requires locking. |
458fb581 |
2075 | * If so, we gain a lock on the CV, the first argument or the |
2076 | * stash (for static methods), as appropriate. This has to be |
2077 | * inline because for FAKE_THREADS, COND_WAIT inlines code to |
2078 | * reschedule by returning a new op. |
3de9ffa1 |
2079 | */ |
11343788 |
2080 | MUTEX_LOCK(CvMUTEXP(cv)); |
77a005ab |
2081 | if (CvFLAGS(cv) & CVf_LOCKED) { |
2082 | MAGIC *mg; |
2083 | if (CvFLAGS(cv) & CVf_METHOD) { |
533c011a |
2084 | if (SP > PL_stack_base + TOPMARK) |
2085 | sv = *(PL_stack_base + TOPMARK + 1); |
77a005ab |
2086 | else { |
2087 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
2088 | croak("no argument for locked method call"); |
2089 | } |
2090 | if (SvROK(sv)) |
2091 | sv = SvRV(sv); |
458fb581 |
2092 | else { |
2093 | STRLEN len; |
2094 | char *stashname = SvPV(sv, len); |
2095 | sv = (SV*)gv_stashpvn(stashname, len, TRUE); |
2096 | } |
77a005ab |
2097 | } |
2098 | else { |
2099 | sv = (SV*)cv; |
2100 | } |
2101 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
2102 | mg = condpair_magic(sv); |
2103 | MUTEX_LOCK(MgMUTEXP(mg)); |
2104 | if (MgOWNER(mg) == thr) |
2105 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
2106 | else { |
2107 | while (MgOWNER(mg)) |
2108 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); |
2109 | MgOWNER(mg) = thr; |
8b73bbec |
2110 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: pp_entersub lock %p\n", |
1fd28e87 |
2111 | thr, sv);) |
77a005ab |
2112 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
e55aaa0e |
2113 | SvREFCNT_inc(sv); /* Keep alive until magic_mutexfree */ |
77a005ab |
2114 | save_destructor(unlock_condpair, sv); |
11343788 |
2115 | } |
77a005ab |
2116 | MUTEX_LOCK(CvMUTEXP(cv)); |
11343788 |
2117 | } |
3de9ffa1 |
2118 | /* |
2119 | * Now we have permission to enter the sub, we must distinguish |
2120 | * four cases. (0) It's an XSUB (in which case we don't care |
2121 | * about ownership); (1) it's ours already (and we're recursing); |
2122 | * (2) it's free (but we may already be using a cached clone); |
2123 | * (3) another thread owns it. Case (1) is easy: we just use it. |
2124 | * Case (2) means we look for a clone--if we have one, use it |
2125 | * otherwise grab ownership of cv. Case (3) means we look for a |
2126 | * clone (for non-XSUBs) and have to create one if we don't |
2127 | * already have one. |
2128 | * Why look for a clone in case (2) when we could just grab |
2129 | * ownership of cv straight away? Well, we could be recursing, |
2130 | * i.e. we originally tried to enter cv while another thread |
2131 | * owned it (hence we used a clone) but it has been freed up |
2132 | * and we're now recursing into it. It may or may not be "better" |
2133 | * to use the clone but at least CvDEPTH can be trusted. |
2134 | */ |
2135 | if (CvOWNER(cv) == thr || CvXSUB(cv)) |
2136 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
11343788 |
2137 | else { |
3de9ffa1 |
2138 | /* Case (2) or (3) */ |
2139 | SV **svp; |
2140 | |
11343788 |
2141 | /* |
3de9ffa1 |
2142 | * XXX Might it be better to release CvMUTEXP(cv) while we |
2143 | * do the hv_fetch? We might find someone has pinched it |
2144 | * when we look again, in which case we would be in case |
2145 | * (3) instead of (2) so we'd have to clone. Would the fact |
2146 | * that we released the mutex more quickly make up for this? |
2147 | */ |
533c011a |
2148 | if (PL_threadnum && |
6ee623d5 |
2149 | (svp = hv_fetch(thr->cvcache, (char *)cv, sizeof(cv), FALSE))) |
2150 | { |
3de9ffa1 |
2151 | /* We already have a clone to use */ |
11343788 |
2152 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
3de9ffa1 |
2153 | cv = *(CV**)svp; |
8b73bbec |
2154 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
1fd28e87 |
2155 | "entersub: %p already has clone %p:%s\n", |
2156 | thr, cv, SvPEEK((SV*)cv))); |
3de9ffa1 |
2157 | CvOWNER(cv) = thr; |
2158 | SvREFCNT_inc(cv); |
2159 | if (CvDEPTH(cv) == 0) |
2160 | SAVEDESTRUCTOR(unset_cvowner, (void*) cv); |
2161 | } |
11343788 |
2162 | else { |
3de9ffa1 |
2163 | /* (2) => grab ownership of cv. (3) => make clone */ |
2164 | if (!CvOWNER(cv)) { |
2165 | CvOWNER(cv) = thr; |
2166 | SvREFCNT_inc(cv); |
11343788 |
2167 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
8b73bbec |
2168 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
1fd28e87 |
2169 | "entersub: %p grabbing %p:%s in stash %s\n", |
2170 | thr, cv, SvPEEK((SV*)cv), CvSTASH(cv) ? |
3de9ffa1 |
2171 | HvNAME(CvSTASH(cv)) : "(none)")); |
2172 | } else { |
2173 | /* Make a new clone. */ |
2174 | CV *clonecv; |
2175 | SvREFCNT_inc(cv); /* don't let it vanish from under us */ |
2176 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
8b73bbec |
2177 | DEBUG_S((PerlIO_printf(PerlIO_stderr(), |
1fd28e87 |
2178 | "entersub: %p cloning %p:%s\n", |
2179 | thr, cv, SvPEEK((SV*)cv)))); |
3de9ffa1 |
2180 | /* |
2181 | * We're creating a new clone so there's no race |
2182 | * between the original MUTEX_UNLOCK and the |
2183 | * SvREFCNT_inc since no one will be trying to undef |
2184 | * it out from underneath us. At least, I don't think |
2185 | * there's a race... |
2186 | */ |
2187 | clonecv = cv_clone(cv); |
2188 | SvREFCNT_dec(cv); /* finished with this */ |
199100c8 |
2189 | hv_store(thr->cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0); |
3de9ffa1 |
2190 | CvOWNER(clonecv) = thr; |
2191 | cv = clonecv; |
11343788 |
2192 | SvREFCNT_inc(cv); |
11343788 |
2193 | } |
8b73bbec |
2194 | DEBUG_S(if (CvDEPTH(cv) != 0) |
3de9ffa1 |
2195 | PerlIO_printf(PerlIO_stderr(), "depth %ld != 0\n", |
2196 | CvDEPTH(cv));); |
2197 | SAVEDESTRUCTOR(unset_cvowner, (void*) cv); |
11343788 |
2198 | } |
3de9ffa1 |
2199 | } |
11343788 |
2200 | #endif /* USE_THREADS */ |
2201 | |
a0d0e21e |
2202 | if (CvXSUB(cv)) { |
2203 | if (CvOLDSTYLE(cv)) { |
ecfc5424 |
2204 | I32 (*fp3)_((int,int,int)); |
a0d0e21e |
2205 | dMARK; |
2206 | register I32 items = SP - MARK; |
67955e0c |
2207 | /* We dont worry to copy from @_. */ |
924508f0 |
2208 | while (SP > mark) { |
2209 | SP[1] = SP[0]; |
2210 | SP--; |
a0d0e21e |
2211 | } |
3280af22 |
2212 | PL_stack_sp = mark + 1; |
ecfc5424 |
2213 | fp3 = (I32(*)_((int,int,int)))CvXSUB(cv); |
2214 | items = (*fp3)(CvXSUBANY(cv).any_i32, |
3280af22 |
2215 | MARK - PL_stack_base + 1, |
ecfc5424 |
2216 | items); |
3280af22 |
2217 | PL_stack_sp = PL_stack_base + items; |
a0d0e21e |
2218 | } |
2219 | else { |
748a9306 |
2220 | I32 markix = TOPMARK; |
2221 | |
a0d0e21e |
2222 | PUTBACK; |
67955e0c |
2223 | |
2224 | if (!hasargs) { |
2225 | /* Need to copy @_ to stack. Alternative may be to |
2226 | * switch stack to @_, and copy return values |
2227 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ |
6d4ff0d2 |
2228 | AV* av; |
2229 | I32 items; |
2230 | #ifdef USE_THREADS |
533c011a |
2231 | av = (AV*)PL_curpad[0]; |
6d4ff0d2 |
2232 | #else |
3280af22 |
2233 | av = GvAV(PL_defgv); |
6d4ff0d2 |
2234 | #endif /* USE_THREADS */ |
93965878 |
2235 | items = AvFILLp(av) + 1; /* @_ is not tieable */ |
67955e0c |
2236 | |
2237 | if (items) { |
2238 | /* Mark is at the end of the stack. */ |
924508f0 |
2239 | EXTEND(SP, items); |
2240 | Copy(AvARRAY(av), SP + 1, items, SV*); |
2241 | SP += items; |
67955e0c |
2242 | PUTBACK ; |
2243 | } |
2244 | } |
3280af22 |
2245 | if (PL_curcopdb) { /* We assume that the first |
67955e0c |
2246 | XSUB in &DB::sub is the |
2247 | called one. */ |
3280af22 |
2248 | SAVESPTR(PL_curcop); |
2249 | PL_curcop = PL_curcopdb; |
2250 | PL_curcopdb = NULL; |
67955e0c |
2251 | } |
2252 | /* Do we need to open block here? XXXX */ |
1d583055 |
2253 | (void)(*CvXSUB(cv))(cv _PERL_OBJECT_THIS); |
748a9306 |
2254 | |
2255 | /* Enforce some sanity in scalar context. */ |
3280af22 |
2256 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { |
2257 | if (markix > PL_stack_sp - PL_stack_base) |
2258 | *(PL_stack_base + markix) = &PL_sv_undef; |
748a9306 |
2259 | else |
3280af22 |
2260 | *(PL_stack_base + markix) = *PL_stack_sp; |
2261 | PL_stack_sp = PL_stack_base + markix; |
748a9306 |
2262 | } |
a0d0e21e |
2263 | } |
2264 | LEAVE; |
2265 | return NORMAL; |
2266 | } |
2267 | else { |
2268 | dMARK; |
2269 | register I32 items = SP - MARK; |
a0d0e21e |
2270 | AV* padlist = CvPADLIST(cv); |
2271 | SV** svp = AvARRAY(padlist); |
533c011a |
2272 | push_return(PL_op->op_next); |
a0d0e21e |
2273 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2274 | PUSHSUB(cx); |
2275 | CvDEPTH(cv)++; |
6b35e009 |
2276 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2277 | * that eval'' ops within this sub know the correct lexical space. |
2278 | * Owing the speed considerations, we choose to search for the cv |
2279 | * in doeval() instead. |
2280 | */ |
a0d0e21e |
2281 | if (CvDEPTH(cv) < 2) |
2282 | (void)SvREFCNT_inc(cv); |
2283 | else { /* save temporaries on recursion? */ |
93965878 |
2284 | if (CvDEPTH(cv) > AvFILLp(padlist)) { |
a0d0e21e |
2285 | AV *av; |
2286 | AV *newpad = newAV(); |
4aa0a1f7 |
2287 | SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]); |
93965878 |
2288 | I32 ix = AvFILLp((AV*)svp[1]); |
a0d0e21e |
2289 | svp = AvARRAY(svp[0]); |
748a9306 |
2290 | for ( ;ix > 0; ix--) { |
3280af22 |
2291 | if (svp[ix] != &PL_sv_undef) { |
748a9306 |
2292 | char *name = SvPVX(svp[ix]); |
5f05dabc |
2293 | if ((SvFLAGS(svp[ix]) & SVf_FAKE) /* outer lexical? */ |
2294 | || *name == '&') /* anonymous code? */ |
2295 | { |
2296 | av_store(newpad, ix, SvREFCNT_inc(oldpad[ix])); |
748a9306 |
2297 | } |
2298 | else { /* our own lexical */ |
2299 | if (*name == '@') |
2300 | av_store(newpad, ix, sv = (SV*)newAV()); |
2301 | else if (*name == '%') |
2302 | av_store(newpad, ix, sv = (SV*)newHV()); |
2303 | else |
2304 | av_store(newpad, ix, sv = NEWSV(0,0)); |
2305 | SvPADMY_on(sv); |
2306 | } |
a0d0e21e |
2307 | } |
2308 | else { |
748a9306 |
2309 | av_store(newpad, ix, sv = NEWSV(0,0)); |
a0d0e21e |
2310 | SvPADTMP_on(sv); |
2311 | } |
2312 | } |
2313 | av = newAV(); /* will be @_ */ |
2314 | av_extend(av, 0); |
2315 | av_store(newpad, 0, (SV*)av); |
2316 | AvFLAGS(av) = AVf_REIFY; |
2317 | av_store(padlist, CvDEPTH(cv), (SV*)newpad); |
93965878 |
2318 | AvFILLp(padlist) = CvDEPTH(cv); |
a0d0e21e |
2319 | svp = AvARRAY(padlist); |
2320 | } |
2321 | } |
6d4ff0d2 |
2322 | #ifdef USE_THREADS |
2323 | if (!hasargs) { |
533c011a |
2324 | AV* av = (AV*)PL_curpad[0]; |
6d4ff0d2 |
2325 | |
93965878 |
2326 | items = AvFILLp(av) + 1; |
6d4ff0d2 |
2327 | if (items) { |
2328 | /* Mark is at the end of the stack. */ |
924508f0 |
2329 | EXTEND(SP, items); |
2330 | Copy(AvARRAY(av), SP + 1, items, SV*); |
2331 | SP += items; |
6d4ff0d2 |
2332 | PUTBACK ; |
2333 | } |
2334 | } |
2335 | #endif /* USE_THREADS */ |
3280af22 |
2336 | SAVESPTR(PL_curpad); |
2337 | PL_curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]); |
6d4ff0d2 |
2338 | #ifndef USE_THREADS |
2339 | if (hasargs) |
2340 | #endif /* USE_THREADS */ |
2341 | { |
2342 | AV* av; |
a0d0e21e |
2343 | SV** ary; |
2344 | |
77a005ab |
2345 | #if 0 |
8b73bbec |
2346 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
0f15f207 |
2347 | "%p entersub preparing @_\n", thr)); |
77a005ab |
2348 | #endif |
3280af22 |
2349 | av = (AV*)PL_curpad[0]; |
a0d0e21e |
2350 | if (AvREAL(av)) { |
2351 | av_clear(av); |
2352 | AvREAL_off(av); |
2353 | } |
6d4ff0d2 |
2354 | #ifndef USE_THREADS |
3280af22 |
2355 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2356 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); |
6d4ff0d2 |
2357 | #endif /* USE_THREADS */ |
2358 | cx->blk_sub.argarray = av; |
a0d0e21e |
2359 | ++MARK; |
2360 | |
2361 | if (items > AvMAX(av) + 1) { |
2362 | ary = AvALLOC(av); |
2363 | if (AvARRAY(av) != ary) { |
2364 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); |
2365 | SvPVX(av) = (char*)ary; |
2366 | } |
2367 | if (items > AvMAX(av) + 1) { |
2368 | AvMAX(av) = items - 1; |
2369 | Renew(ary,items,SV*); |
2370 | AvALLOC(av) = ary; |
2371 | SvPVX(av) = (char*)ary; |
2372 | } |
2373 | } |
2374 | Copy(MARK,AvARRAY(av),items,SV*); |
93965878 |
2375 | AvFILLp(av) = items - 1; |
a0d0e21e |
2376 | |
2377 | while (items--) { |
2378 | if (*MARK) |
2379 | SvTEMP_off(*MARK); |
2380 | MARK++; |
2381 | } |
2382 | } |
4a925ff6 |
2383 | /* warning must come *after* we fully set up the context |
2384 | * stuff so that __WARN__ handlers can safely dounwind() |
2385 | * if they want to |
2386 | */ |
2387 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) |
2388 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) |
2389 | sub_crush_depth(cv); |
77a005ab |
2390 | #if 0 |
8b73bbec |
2391 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
0f15f207 |
2392 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab |
2393 | #endif |
a0d0e21e |
2394 | RETURNOP(CvSTART(cv)); |
2395 | } |
2396 | } |
2397 | |
44a8e56a |
2398 | void |
8ac85365 |
2399 | sub_crush_depth(CV *cv) |
44a8e56a |
2400 | { |
2401 | if (CvANON(cv)) |
599cee73 |
2402 | warner(WARN_RECURSION, "Deep recursion on anonymous subroutine"); |
44a8e56a |
2403 | else { |
2404 | SV* tmpstr = sv_newmortal(); |
2405 | gv_efullname3(tmpstr, CvGV(cv), Nullch); |
599cee73 |
2406 | warner(WARN_RECURSION, "Deep recursion on subroutine \"%s\"", |
2407 | SvPVX(tmpstr)); |
44a8e56a |
2408 | } |
2409 | } |
2410 | |
a0d0e21e |
2411 | PP(pp_aelem) |
2412 | { |
4e35701f |
2413 | djSP; |
a0d0e21e |
2414 | SV** svp; |
748a9306 |
2415 | I32 elem = POPi; |
68dc0745 |
2416 | AV* av = (AV*)POPs; |
533c011a |
2417 | U32 lval = PL_op->op_flags & OPf_MOD; |
2418 | U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av)); |
be6c24e0 |
2419 | SV *sv; |
a0d0e21e |
2420 | |
748a9306 |
2421 | if (elem > 0) |
3280af22 |
2422 | elem -= PL_curcop->cop_arybase; |
a0d0e21e |
2423 | if (SvTYPE(av) != SVt_PVAV) |
2424 | RETPUSHUNDEF; |
68dc0745 |
2425 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e |
2426 | if (lval) { |
3280af22 |
2427 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 |
2428 | SV* lv; |
2429 | if (!defer) |
2430 | DIE(no_aelem, elem); |
2431 | lv = sv_newmortal(); |
2432 | sv_upgrade(lv, SVt_PVLV); |
2433 | LvTYPE(lv) = 'y'; |
2434 | sv_magic(lv, Nullsv, 'y', Nullch, 0); |
2435 | LvTARG(lv) = SvREFCNT_inc(av); |
2436 | LvTARGOFF(lv) = elem; |
2437 | LvTARGLEN(lv) = 1; |
2438 | PUSHs(lv); |
2439 | RETURN; |
2440 | } |
533c011a |
2441 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 |
2442 | save_aelem(av, elem, svp); |
533c011a |
2443 | else if (PL_op->op_private & OPpDEREF) |
2444 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); |
a0d0e21e |
2445 | } |
3280af22 |
2446 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 |
2447 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2448 | sv = sv_mortalcopy(sv); |
2449 | PUSHs(sv); |
a0d0e21e |
2450 | RETURN; |
2451 | } |
2452 | |
02a9e968 |
2453 | void |
8ac85365 |
2454 | vivify_ref(SV *sv, U32 to_what) |
02a9e968 |
2455 | { |
2456 | if (SvGMAGICAL(sv)) |
2457 | mg_get(sv); |
2458 | if (!SvOK(sv)) { |
2459 | if (SvREADONLY(sv)) |
2460 | croak(no_modify); |
5f05dabc |
2461 | if (SvTYPE(sv) < SVt_RV) |
2462 | sv_upgrade(sv, SVt_RV); |
2463 | else if (SvTYPE(sv) >= SVt_PV) { |
2464 | (void)SvOOK_off(sv); |
2465 | Safefree(SvPVX(sv)); |
2466 | SvLEN(sv) = SvCUR(sv) = 0; |
2467 | } |
68dc0745 |
2468 | switch (to_what) { |
5f05dabc |
2469 | case OPpDEREF_SV: |
8c52afec |
2470 | SvRV(sv) = NEWSV(355,0); |
5f05dabc |
2471 | break; |
2472 | case OPpDEREF_AV: |
2473 | SvRV(sv) = (SV*)newAV(); |
2474 | break; |
2475 | case OPpDEREF_HV: |
2476 | SvRV(sv) = (SV*)newHV(); |
2477 | break; |
2478 | } |
02a9e968 |
2479 | SvROK_on(sv); |
2480 | SvSETMAGIC(sv); |
2481 | } |
2482 | } |
2483 | |
a0d0e21e |
2484 | PP(pp_method) |
2485 | { |
4e35701f |
2486 | djSP; |
a0d0e21e |
2487 | SV* sv; |
2488 | SV* ob; |
2489 | GV* gv; |
56304f61 |
2490 | HV* stash; |
2491 | char* name; |
ac91690f |
2492 | char* packname; |
2493 | STRLEN packlen; |
a0d0e21e |
2494 | |
fb73857a |
2495 | if (SvROK(TOPs)) { |
2496 | sv = SvRV(TOPs); |
2497 | if (SvTYPE(sv) == SVt_PVCV) { |
2498 | SETs(sv); |
2499 | RETURN; |
2500 | } |
2501 | } |
2502 | |
3280af22 |
2503 | name = SvPV(TOPs, PL_na); |
2504 | sv = *(PL_stack_base + TOPMARK + 1); |
a0d0e21e |
2505 | |
16d20bd9 |
2506 | if (SvGMAGICAL(sv)) |
2507 | mg_get(sv); |
a0d0e21e |
2508 | if (SvROK(sv)) |
16d20bd9 |
2509 | ob = (SV*)SvRV(sv); |
a0d0e21e |
2510 | else { |
2511 | GV* iogv; |
a0d0e21e |
2512 | |
56304f61 |
2513 | packname = Nullch; |
a0d0e21e |
2514 | if (!SvOK(sv) || |
56304f61 |
2515 | !(packname = SvPV(sv, packlen)) || |
a0d0e21e |
2516 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
2517 | !(ob=(SV*)GvIO(iogv))) |
2518 | { |
56304f61 |
2519 | if (!packname || !isIDFIRST(*packname)) |
72b5445b |
2520 | DIE("Can't call method \"%s\" %s", name, |
2521 | SvOK(sv)? "without a package or object reference" |
2522 | : "on an undefined value"); |
56304f61 |
2523 | stash = gv_stashpvn(packname, packlen, TRUE); |
ac91690f |
2524 | goto fetch; |
a0d0e21e |
2525 | } |
3280af22 |
2526 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e |
2527 | } |
2528 | |
ac91690f |
2529 | if (!ob || !SvOBJECT(ob)) |
a0d0e21e |
2530 | DIE("Can't call method \"%s\" on unblessed reference", name); |
a0d0e21e |
2531 | |
56304f61 |
2532 | stash = SvSTASH(ob); |
a0d0e21e |
2533 | |
ac91690f |
2534 | fetch: |
ac91690f |
2535 | gv = gv_fetchmethod(stash, name); |
56304f61 |
2536 | if (!gv) { |
2537 | char* leaf = name; |
2538 | char* sep = Nullch; |
2539 | char* p; |
2540 | |
2541 | for (p = name; *p; p++) { |
2542 | if (*p == '\'') |
2543 | sep = p, leaf = p + 1; |
2544 | else if (*p == ':' && *(p + 1) == ':') |
2545 | sep = p, leaf = p + 2; |
2546 | } |
2547 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { |
3280af22 |
2548 | packname = HvNAME(sep ? PL_curcop->cop_stash : stash); |
56304f61 |
2549 | packlen = strlen(packname); |
2550 | } |
2551 | else { |
2552 | packname = name; |
2553 | packlen = sep - name; |
2554 | } |
2555 | DIE("Can't locate object method \"%s\" via package \"%.*s\"", |
2556 | leaf, (int)packlen, packname); |
2557 | } |
8ebc5c01 |
2558 | SETs(isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv); |
a0d0e21e |
2559 | RETURN; |
2560 | } |
22239a37 |
2561 | |