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This is my patch patch.1l for perl5.001.
[p5sagit/p5-mst-13.2.git] / pp_hot.c
CommitLineData
a0d0e21e 1/* pp_hot.c
2 *
3 * Copyright (c) 1991-1994, Larry Wall
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
21/* Hot code. */
22
23PP(pp_const)
24{
25 dSP;
26 XPUSHs(cSVOP->op_sv);
27 RETURN;
28}
29
30PP(pp_nextstate)
31{
32 curcop = (COP*)op;
33 TAINT_NOT; /* Each statement is presumed innocent */
34 stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
35 FREETMPS;
36 return NORMAL;
37}
38
39PP(pp_gvsv)
40{
41 dSP;
42 EXTEND(sp,1);
43 if (op->op_private & OPpLVAL_INTRO)
44 PUSHs(save_scalar(cGVOP->op_gv));
45 else
46 PUSHs(GvSV(cGVOP->op_gv));
47 RETURN;
48}
49
50PP(pp_null)
51{
52 return NORMAL;
53}
54
55PP(pp_pushmark)
56{
57 PUSHMARK(stack_sp);
58 return NORMAL;
59}
60
61PP(pp_stringify)
62{
63 dSP; dTARGET;
64 STRLEN len;
65 char *s;
66 s = SvPV(TOPs,len);
67 sv_setpvn(TARG,s,len);
68 SETTARG;
69 RETURN;
70}
71
72PP(pp_gv)
73{
74 dSP;
75 XPUSHs((SV*)cGVOP->op_gv);
76 RETURN;
77}
78
79PP(pp_and)
80{
81 dSP;
82 if (!SvTRUE(TOPs))
83 RETURN;
84 else {
85 --SP;
86 RETURNOP(cLOGOP->op_other);
87 }
88}
89
90PP(pp_sassign)
91{
92 dSP; dPOPTOPssrl;
748a9306 93 MAGIC *mg;
94
a0d0e21e 95 if (op->op_private & OPpASSIGN_BACKWARDS) {
96 SV *temp;
97 temp = left; left = right; right = temp;
98 }
99 if (tainting && tainted && (!SvGMAGICAL(left) || !SvSMAGICAL(left) ||
748a9306 100 !((mg = mg_find(left, 't')) && mg->mg_len & 1)))
101 {
a0d0e21e 102 TAINT_NOT;
103 }
104 SvSetSV(right, left);
105 SvSETMAGIC(right);
106 SETs(right);
107 RETURN;
108}
109
110PP(pp_cond_expr)
111{
112 dSP;
113 if (SvTRUEx(POPs))
114 RETURNOP(cCONDOP->op_true);
115 else
116 RETURNOP(cCONDOP->op_false);
117}
118
119PP(pp_unstack)
120{
121 I32 oldsave;
122 TAINT_NOT; /* Each statement is presumed innocent */
123 stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
124 FREETMPS;
125 oldsave = scopestack[scopestack_ix - 1];
126 LEAVE_SCOPE(oldsave);
127 return NORMAL;
128}
129
130PP(pp_seq)
131{
132 dSP; tryAMAGICbinSET(seq,0);
133 {
134 dPOPTOPssrl;
135 SETs( sv_eq(left, right) ? &sv_yes : &sv_no );
136 RETURN;
137 }
138}
139
140PP(pp_concat)
141{
748a9306 142 dSP; dATARGET; tryAMAGICbin(concat,opASSIGN);
143 {
144 dPOPTOPssrl;
a0d0e21e 145 STRLEN len;
146 char *s;
147 if (TARG != left) {
148 s = SvPV(left,len);
149 sv_setpvn(TARG,s,len);
150 }
748a9306 151 else if (!SvOK(TARG))
152 sv_setpv(TARG, ""); /* Suppress warning. */
a0d0e21e 153 s = SvPV(right,len);
154 sv_catpvn(TARG,s,len);
155 SETTARG;
156 RETURN;
748a9306 157 }
a0d0e21e 158}
159
160PP(pp_padsv)
161{
162 dSP; dTARGET;
163 XPUSHs(TARG);
164 if (op->op_private & OPpLVAL_INTRO)
165 SAVECLEARSV(curpad[op->op_targ]);
166 RETURN;
167}
168
169PP(pp_readline)
170{
171 last_in_gv = (GV*)(*stack_sp--);
172 return do_readline();
173}
174
175PP(pp_eq)
176{
177 dSP; tryAMAGICbinSET(eq,0);
178 {
179 dPOPnv;
180 SETs((TOPn == value) ? &sv_yes : &sv_no);
181 RETURN;
182 }
183}
184
185PP(pp_preinc)
186{
187 dSP;
748a9306 188 if (SvIOK(TOPs)) {
189 ++SvIVX(TOPs);
190 SvFLAGS(TOPs) &= ~(SVf_NOK|SVf_POK|SVp_NOK|SVp_POK);
191 }
192 else
193 sv_inc(TOPs);
a0d0e21e 194 SvSETMAGIC(TOPs);
195 return NORMAL;
196}
197
198PP(pp_or)
199{
200 dSP;
201 if (SvTRUE(TOPs))
202 RETURN;
203 else {
204 --SP;
205 RETURNOP(cLOGOP->op_other);
206 }
207}
208
209PP(pp_add)
210{
211 dSP; dATARGET; tryAMAGICbin(add,opASSIGN);
212 {
213 dPOPTOPnnrl;
214 SETn( left + right );
215 RETURN;
216 }
217}
218
219PP(pp_aelemfast)
220{
221 dSP;
222 AV *av = GvAV((GV*)cSVOP->op_sv);
223 SV** svp = av_fetch(av, op->op_private, op->op_flags & OPf_MOD);
224 PUSHs(svp ? *svp : &sv_undef);
225 RETURN;
226}
227
228PP(pp_join)
229{
230 dSP; dMARK; dTARGET;
231 MARK++;
232 do_join(TARG, *MARK, MARK, SP);
233 SP = MARK;
234 SETs(TARG);
235 RETURN;
236}
237
238PP(pp_pushre)
239{
240 dSP;
241 XPUSHs((SV*)op);
242 RETURN;
243}
244
245/* Oversized hot code. */
246
247PP(pp_print)
248{
249 dSP; dMARK; dORIGMARK;
250 GV *gv;
251 IO *io;
252 register FILE *fp;
253
254 if (op->op_flags & OPf_STACKED)
255 gv = (GV*)*++MARK;
256 else
257 gv = defoutgv;
258 if (!(io = GvIO(gv))) {
748a9306 259 if (dowarn) {
260 SV* sv = sv_newmortal();
261 gv_fullname(sv,gv);
262 warn("Filehandle %s never opened", SvPV(sv,na));
263 }
264
265 SETERRNO(EBADF,RMS$_IFI);
a0d0e21e 266 goto just_say_no;
267 }
268 else if (!(fp = IoOFP(io))) {
269 if (dowarn) {
748a9306 270 SV* sv = sv_newmortal();
271 gv_fullname(sv,gv);
a0d0e21e 272 if (IoIFP(io))
748a9306 273 warn("Filehandle %s opened only for input", SvPV(sv,na));
a0d0e21e 274 else
748a9306 275 warn("print on closed filehandle %s", SvPV(sv,na));
a0d0e21e 276 }
748a9306 277 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
a0d0e21e 278 goto just_say_no;
279 }
280 else {
281 MARK++;
282 if (ofslen) {
283 while (MARK <= SP) {
284 if (!do_print(*MARK, fp))
285 break;
286 MARK++;
287 if (MARK <= SP) {
288 if (fwrite1(ofs, 1, ofslen, fp) == 0 || ferror(fp)) {
289 MARK--;
290 break;
291 }
292 }
293 }
294 }
295 else {
296 while (MARK <= SP) {
297 if (!do_print(*MARK, fp))
298 break;
299 MARK++;
300 }
301 }
302 if (MARK <= SP)
303 goto just_say_no;
304 else {
305 if (orslen)
306 if (fwrite1(ors, 1, orslen, fp) == 0 || ferror(fp))
307 goto just_say_no;
308
309 if (IoFLAGS(io) & IOf_FLUSH)
310 if (fflush(fp) == EOF)
311 goto just_say_no;
312 }
313 }
314 SP = ORIGMARK;
315 PUSHs(&sv_yes);
316 RETURN;
317
318 just_say_no:
319 SP = ORIGMARK;
320 PUSHs(&sv_undef);
321 RETURN;
322}
323
324PP(pp_rv2av)
325{
326 dSP; dPOPss;
327
328 AV *av;
329
330 if (SvROK(sv)) {
331 wasref:
332 av = (AV*)SvRV(sv);
333 if (SvTYPE(av) != SVt_PVAV)
334 DIE("Not an ARRAY reference");
335 if (op->op_private & OPpLVAL_INTRO)
336 av = (AV*)save_svref((SV**)sv);
337 if (op->op_flags & OPf_REF) {
338 PUSHs((SV*)av);
339 RETURN;
340 }
341 }
342 else {
343 if (SvTYPE(sv) == SVt_PVAV) {
344 av = (AV*)sv;
345 if (op->op_flags & OPf_REF) {
346 PUSHs((SV*)av);
347 RETURN;
348 }
349 }
350 else {
351 if (SvTYPE(sv) != SVt_PVGV) {
748a9306 352 char *sym;
353
a0d0e21e 354 if (SvGMAGICAL(sv)) {
355 mg_get(sv);
356 if (SvROK(sv))
357 goto wasref;
358 }
359 if (!SvOK(sv)) {
360 if (op->op_flags & OPf_REF ||
361 op->op_private & HINT_STRICT_REFS)
362 DIE(no_usym, "an ARRAY");
363 RETPUSHUNDEF;
364 }
748a9306 365 sym = SvPV(sv,na);
a0d0e21e 366 if (op->op_private & HINT_STRICT_REFS)
748a9306 367 DIE(no_symref, sym, "an ARRAY");
368 sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVAV);
a0d0e21e 369 }
370 av = GvAVn(sv);
371 if (op->op_private & OPpLVAL_INTRO)
372 av = save_ary(sv);
373 if (op->op_flags & OPf_REF) {
374 PUSHs((SV*)av);
375 RETURN;
376 }
377 }
378 }
379
380 if (GIMME == G_ARRAY) {
381 I32 maxarg = AvFILL(av) + 1;
382 EXTEND(SP, maxarg);
383 Copy(AvARRAY(av), SP+1, maxarg, SV*);
384 SP += maxarg;
385 }
386 else {
387 dTARGET;
388 I32 maxarg = AvFILL(av) + 1;
389 PUSHi(maxarg);
390 }
391 RETURN;
392}
393
394PP(pp_rv2hv)
395{
396
397 dSP; dTOPss;
398
399 HV *hv;
400
401 if (SvROK(sv)) {
402 wasref:
403 hv = (HV*)SvRV(sv);
404 if (SvTYPE(hv) != SVt_PVHV)
405 DIE("Not a HASH reference");
406 if (op->op_private & OPpLVAL_INTRO)
407 hv = (HV*)save_svref((SV**)sv);
408 if (op->op_flags & OPf_REF) {
409 SETs((SV*)hv);
410 RETURN;
411 }
412 }
413 else {
414 if (SvTYPE(sv) == SVt_PVHV) {
415 hv = (HV*)sv;
416 if (op->op_flags & OPf_REF) {
417 SETs((SV*)hv);
418 RETURN;
419 }
420 }
421 else {
422 if (SvTYPE(sv) != SVt_PVGV) {
748a9306 423 char *sym;
424
a0d0e21e 425 if (SvGMAGICAL(sv)) {
426 mg_get(sv);
427 if (SvROK(sv))
428 goto wasref;
429 }
430 if (!SvOK(sv)) {
431 if (op->op_flags & OPf_REF ||
432 op->op_private & HINT_STRICT_REFS)
433 DIE(no_usym, "a HASH");
434 RETSETUNDEF;
435 }
748a9306 436 sym = SvPV(sv,na);
a0d0e21e 437 if (op->op_private & HINT_STRICT_REFS)
748a9306 438 DIE(no_symref, sym, "a HASH");
439 sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVHV);
a0d0e21e 440 }
441 hv = GvHVn(sv);
442 if (op->op_private & OPpLVAL_INTRO)
443 hv = save_hash(sv);
444 if (op->op_flags & OPf_REF) {
445 SETs((SV*)hv);
446 RETURN;
447 }
448 }
449 }
450
451 if (GIMME == G_ARRAY) { /* array wanted */
452 *stack_sp = (SV*)hv;
453 return do_kv(ARGS);
454 }
455 else {
456 dTARGET;
457 if (HvFILL(hv)) {
458 sprintf(buf, "%d/%d", HvFILL(hv), HvMAX(hv)+1);
459 sv_setpv(TARG, buf);
460 }
461 else
462 sv_setiv(TARG, 0);
463 SETTARG;
464 RETURN;
465 }
466}
467
468PP(pp_aassign)
469{
470 dSP;
471 SV **lastlelem = stack_sp;
472 SV **lastrelem = stack_base + POPMARK;
473 SV **firstrelem = stack_base + POPMARK + 1;
474 SV **firstlelem = lastrelem + 1;
475
476 register SV **relem;
477 register SV **lelem;
478
479 register SV *sv;
480 register AV *ary;
481
482 HV *hash;
483 I32 i;
484 int magic;
485
486 delaymagic = DM_DELAY; /* catch simultaneous items */
487
488 /* If there's a common identifier on both sides we have to take
489 * special care that assigning the identifier on the left doesn't
490 * clobber a value on the right that's used later in the list.
491 */
492 if (op->op_private & OPpASSIGN_COMMON) {
493 for (relem = firstrelem; relem <= lastrelem; relem++) {
494 /*SUPPRESS 560*/
495 if (sv = *relem)
496 *relem = sv_mortalcopy(sv);
497 }
498 }
499
500 relem = firstrelem;
501 lelem = firstlelem;
502 ary = Null(AV*);
503 hash = Null(HV*);
504 while (lelem <= lastlelem) {
505 sv = *lelem++;
506 switch (SvTYPE(sv)) {
507 case SVt_PVAV:
508 ary = (AV*)sv;
748a9306 509 magic = SvMAGICAL(ary) != 0;
a0d0e21e 510
511 av_clear(ary);
512 i = 0;
513 while (relem <= lastrelem) { /* gobble up all the rest */
514 sv = NEWSV(28,0);
515 assert(*relem);
516 sv_setsv(sv,*relem);
517 *(relem++) = sv;
518 (void)av_store(ary,i++,sv);
519 if (magic)
520 mg_set(sv);
521 }
522 break;
523 case SVt_PVHV: {
524 char *tmps;
525 SV *tmpstr;
526
527 hash = (HV*)sv;
748a9306 528 magic = SvMAGICAL(hash) != 0;
a0d0e21e 529 hv_clear(hash);
530
531 while (relem < lastrelem) { /* gobble up all the rest */
532 STRLEN len;
533 if (*relem)
534 sv = *(relem++);
535 else
536 sv = &sv_no, relem++;
537 tmps = SvPV(sv, len);
538 tmpstr = NEWSV(29,0);
539 if (*relem)
540 sv_setsv(tmpstr,*relem); /* value */
541 *(relem++) = tmpstr;
542 (void)hv_store(hash,tmps,len,tmpstr,0);
543 if (magic)
544 mg_set(tmpstr);
545 }
546 }
547 break;
548 default:
549 if (SvTHINKFIRST(sv)) {
550 if (SvREADONLY(sv) && curcop != &compiling) {
551 if (sv != &sv_undef && sv != &sv_yes && sv != &sv_no)
552 DIE(no_modify);
553 if (relem <= lastrelem)
554 relem++;
555 break;
556 }
557 if (SvROK(sv))
558 sv_unref(sv);
559 }
560 if (relem <= lastrelem) {
561 sv_setsv(sv, *relem);
562 *(relem++) = sv;
563 }
564 else
565 sv_setsv(sv, &sv_undef);
566 SvSETMAGIC(sv);
567 break;
568 }
569 }
570 if (delaymagic & ~DM_DELAY) {
571 if (delaymagic & DM_UID) {
572#ifdef HAS_SETRESUID
573 (void)setresuid(uid,euid,(Uid_t)-1);
56febc5e 574#else
575# ifdef HAS_SETREUID
a0d0e21e 576 (void)setreuid(uid,euid);
56febc5e 577# else
578# ifdef HAS_SETRUID
a0d0e21e 579 if ((delaymagic & DM_UID) == DM_RUID) {
580 (void)setruid(uid);
748a9306 581 delaymagic &= ~DM_RUID;
a0d0e21e 582 }
56febc5e 583# endif /* HAS_SETRUID */
584# ifdef HAS_SETEUID
a0d0e21e 585 if ((delaymagic & DM_UID) == DM_EUID) {
586 (void)seteuid(uid);
748a9306 587 delaymagic &= ~DM_EUID;
a0d0e21e 588 }
56febc5e 589# endif /* HAS_SETEUID */
a0d0e21e 590 if (delaymagic & DM_UID) {
591 if (uid != euid)
592 DIE("No setreuid available");
593 (void)setuid(uid);
594 }
56febc5e 595# endif /* HAS_SETREUID */
596#endif /* HAS_SETRESUID */
a0d0e21e 597 uid = (int)getuid();
598 euid = (int)geteuid();
599 }
600 if (delaymagic & DM_GID) {
601#ifdef HAS_SETRESGID
602 (void)setresgid(gid,egid,(Gid_t)-1);
56febc5e 603#else
604# ifdef HAS_SETREGID
a0d0e21e 605 (void)setregid(gid,egid);
56febc5e 606# else
607# ifdef HAS_SETRGID
a0d0e21e 608 if ((delaymagic & DM_GID) == DM_RGID) {
609 (void)setrgid(gid);
748a9306 610 delaymagic &= ~DM_RGID;
a0d0e21e 611 }
56febc5e 612# endif /* HAS_SETRGID */
613# ifdef HAS_SETEGID
a0d0e21e 614 if ((delaymagic & DM_GID) == DM_EGID) {
615 (void)setegid(gid);
748a9306 616 delaymagic &= ~DM_EGID;
a0d0e21e 617 }
56febc5e 618# endif /* HAS_SETEGID */
a0d0e21e 619 if (delaymagic & DM_GID) {
620 if (gid != egid)
621 DIE("No setregid available");
622 (void)setgid(gid);
623 }
56febc5e 624# endif /* HAS_SETREGID */
625#endif /* HAS_SETRESGID */
a0d0e21e 626 gid = (int)getgid();
627 egid = (int)getegid();
628 }
629 tainting |= (euid != uid || egid != gid);
630 }
631 delaymagic = 0;
632 if (GIMME == G_ARRAY) {
633 if (ary || hash)
634 SP = lastrelem;
635 else
636 SP = firstrelem + (lastlelem - firstlelem);
637 RETURN;
638 }
639 else {
640 SP = firstrelem;
641 for (relem = firstrelem; relem <= lastrelem; ++relem) {
642 if (SvOK(*relem)) {
643 dTARGET;
644
645 SETi(lastrelem - firstrelem + 1);
646 RETURN;
647 }
648 }
649 RETSETUNDEF;
650 }
651}
652
653PP(pp_match)
654{
655 dSP; dTARG;
656 register PMOP *pm = cPMOP;
657 register char *t;
658 register char *s;
659 char *strend;
660 I32 global;
661 I32 safebase;
662 char *truebase;
663 register REGEXP *rx = pm->op_pmregexp;
664 I32 gimme = GIMME;
665 STRLEN len;
748a9306 666 I32 minmatch = 0;
a0d0e21e 667
668 if (op->op_flags & OPf_STACKED)
669 TARG = POPs;
670 else {
671 TARG = GvSV(defgv);
672 EXTEND(SP,1);
673 }
674 s = SvPV(TARG, len);
675 strend = s + len;
676 if (!s)
677 DIE("panic: do_match");
678
679 if (pm->op_pmflags & PMf_USED) {
680 if (gimme == G_ARRAY)
681 RETURN;
682 RETPUSHNO;
683 }
684
685 if (!rx->prelen && curpm) {
686 pm = curpm;
687 rx = pm->op_pmregexp;
688 }
689 truebase = t = s;
690 if (global = pm->op_pmflags & PMf_GLOBAL) {
691 rx->startp[0] = 0;
692 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
693 MAGIC* mg = mg_find(TARG, 'g');
748a9306 694 if (mg && mg->mg_len >= 0) {
a0d0e21e 695 rx->endp[0] = rx->startp[0] = s + mg->mg_len;
748a9306 696 minmatch = (mg->mg_flags & MGf_MINMATCH);
697 }
a0d0e21e 698 }
699 }
748a9306 700 if (!rx->nparens && !global)
701 gimme = G_SCALAR; /* accidental array context? */
a0d0e21e 702 safebase = (gimme == G_ARRAY) || global;
703 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
704 SAVEINT(multiline);
705 multiline = pm->op_pmflags & PMf_MULTILINE;
706 }
707
708play_it_again:
709 if (global && rx->startp[0]) {
710 t = s = rx->endp[0];
711 if (s > strend)
712 goto nope;
748a9306 713 minmatch = (s == rx->startp[0]);
a0d0e21e 714 }
715 if (pm->op_pmshort) {
716 if (pm->op_pmflags & PMf_SCANFIRST) {
717 if (SvSCREAM(TARG)) {
718 if (screamfirst[BmRARE(pm->op_pmshort)] < 0)
719 goto nope;
720 else if (!(s = screaminstr(TARG, pm->op_pmshort)))
721 goto nope;
722 else if (pm->op_pmflags & PMf_ALL)
723 goto yup;
724 }
725 else if (!(s = fbm_instr((unsigned char*)s,
726 (unsigned char*)strend, pm->op_pmshort)))
727 goto nope;
728 else if (pm->op_pmflags & PMf_ALL)
729 goto yup;
730 if (s && rx->regback >= 0) {
731 ++BmUSEFUL(pm->op_pmshort);
732 s -= rx->regback;
733 if (s < t)
734 s = t;
735 }
736 else
737 s = t;
738 }
739 else if (!multiline) {
740 if (*SvPVX(pm->op_pmshort) != *s ||
741 bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) {
742 if (pm->op_pmflags & PMf_FOLD) {
743 if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) )
744 goto nope;
745 }
746 else
747 goto nope;
748 }
749 }
750 if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) {
751 SvREFCNT_dec(pm->op_pmshort);
752 pm->op_pmshort = Nullsv; /* opt is being useless */
753 }
754 }
748a9306 755 if (regexec(rx, s, strend, truebase, minmatch,
a0d0e21e 756 SvSCREAM(TARG) ? TARG : Nullsv,
757 safebase)) {
758 curpm = pm;
759 if (pm->op_pmflags & PMf_ONCE)
760 pm->op_pmflags |= PMf_USED;
761 goto gotcha;
762 }
763 else
764 goto ret_no;
765 /*NOTREACHED*/
766
767 gotcha:
768 if (gimme == G_ARRAY) {
769 I32 iters, i, len;
770
771 iters = rx->nparens;
772 if (global && !iters)
773 i = 1;
774 else
775 i = 0;
776 EXTEND(SP, iters + i);
777 for (i = !i; i <= iters; i++) {
778 PUSHs(sv_newmortal());
779 /*SUPPRESS 560*/
780 if ((s = rx->startp[i]) && rx->endp[i] ) {
781 len = rx->endp[i] - s;
782 sv_setpvn(*SP, s, len);
783 }
784 }
785 if (global) {
786 truebase = rx->subbeg;
787 if (rx->startp[0] && rx->startp[0] == rx->endp[0])
788 ++rx->endp[0];
789 goto play_it_again;
790 }
791 RETURN;
792 }
793 else {
794 if (global) {
795 MAGIC* mg = 0;
796 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG))
797 mg = mg_find(TARG, 'g');
798 if (!mg) {
799 sv_magic(TARG, (SV*)0, 'g', Nullch, 0);
800 mg = mg_find(TARG, 'g');
801 }
748a9306 802 if (rx->startp[0]) {
803 mg->mg_len = rx->endp[0] - truebase;
804 if (rx->startp[0] == rx->endp[0])
805 mg->mg_flags |= MGf_MINMATCH;
806 else
807 mg->mg_flags &= ~MGf_MINMATCH;
808 }
809 else
810 mg->mg_len = -1;
a0d0e21e 811 }
812 RETPUSHYES;
813 }
814
815yup:
816 ++BmUSEFUL(pm->op_pmshort);
817 curpm = pm;
818 if (pm->op_pmflags & PMf_ONCE)
819 pm->op_pmflags |= PMf_USED;
820 if (global) {
821 rx->subbeg = truebase;
822 rx->subend = strend;
823 rx->startp[0] = s;
824 rx->endp[0] = s + SvCUR(pm->op_pmshort);
825 goto gotcha;
826 }
827 if (sawampersand) {
828 char *tmps;
829
830 if (rx->subbase)
831 Safefree(rx->subbase);
832 tmps = rx->subbase = savepvn(t, strend-t);
833 rx->subbeg = tmps;
834 rx->subend = tmps + (strend-t);
835 tmps = rx->startp[0] = tmps + (s - t);
836 rx->endp[0] = tmps + SvCUR(pm->op_pmshort);
837 }
838 RETPUSHYES;
839
840nope:
841 if (pm->op_pmshort)
842 ++BmUSEFUL(pm->op_pmshort);
843
844ret_no:
845 if (global) {
846 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
847 MAGIC* mg = mg_find(TARG, 'g');
848 if (mg)
849 mg->mg_len = -1;
850 }
851 }
852 if (gimme == G_ARRAY)
853 RETURN;
854 RETPUSHNO;
855}
856
857OP *
858do_readline()
859{
860 dSP; dTARGETSTACKED;
861 register SV *sv;
862 STRLEN tmplen = 0;
863 STRLEN offset;
864 FILE *fp;
865 register IO *io = GvIO(last_in_gv);
866 register I32 type = op->op_type;
867
868 fp = Nullfp;
869 if (io) {
870 fp = IoIFP(io);
871 if (!fp) {
872 if (IoFLAGS(io) & IOf_ARGV) {
873 if (IoFLAGS(io) & IOf_START) {
874 IoFLAGS(io) &= ~IOf_START;
875 IoLINES(io) = 0;
876 if (av_len(GvAVn(last_in_gv)) < 0) {
877 SV *tmpstr = newSVpv("-", 1); /* assume stdin */
878 av_push(GvAVn(last_in_gv), tmpstr);
879 }
880 }
881 fp = nextargv(last_in_gv);
882 if (!fp) { /* Note: fp != IoIFP(io) */
883 (void)do_close(last_in_gv, FALSE); /* now it does*/
884 IoFLAGS(io) |= IOf_START;
885 }
886 }
887 else if (type == OP_GLOB) {
888 SV *tmpcmd = NEWSV(55, 0);
889 SV *tmpglob = POPs;
890 ENTER;
891 SAVEFREESV(tmpcmd);
892#ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
893 /* since spawning off a process is a real performance hit */
894 {
895#include <descrip.h>
896#include <lib$routines.h>
897#include <nam.h>
898#include <rmsdef.h>
899 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
900 char vmsspec[NAM$C_MAXRSS+1];
901 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
902 char tmpfnam[L_tmpnam] = "SYS$SCRATCH:";
903 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
904 FILE *tmpfp;
905 STRLEN i;
906 struct dsc$descriptor_s wilddsc
907 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
908 struct dsc$descriptor_vs rsdsc
909 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
910 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
911
912 /* We could find out if there's an explicit dev/dir or version
913 by peeking into lib$find_file's internal context at
914 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
915 but that's unsupported, so I don't want to do it now and
916 have it bite someone in the future. */
917 strcat(tmpfnam,tmpnam(NULL));
918 cp = SvPV(tmpglob,i);
919 for (; i; i--) {
920 if (cp[i] == ';') hasver = 1;
921 if (cp[i] == '.') {
922 if (sts) hasver = 1;
923 else sts = 1;
924 }
925 if (cp[i] == '/') {
926 hasdir = isunix = 1;
927 break;
748a9306 928 }
a0d0e21e 929 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
930 hasdir = 1;
931 break;
932 }
933 }
934 if ((tmpfp = fopen(tmpfnam,"w+","fop=dlt")) != NULL) {
935 ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
936 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
937 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
938 &dfltdsc,NULL,NULL,NULL))&1)) {
939 end = rstr + (unsigned long int) *rslt;
940 if (!hasver) while (*end != ';') end--;
941 *(end++) = '\n'; *end = '\0';
942 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
943 if (hasdir) {
944 if (isunix) trim_unixpath(SvPVX(tmpglob),rstr);
945 begin = rstr;
946 }
947 else {
948 begin = end;
949 while (*(--begin) != ']' && *begin != '>') ;
950 ++begin;
951 }
952 ok = (fputs(begin,tmpfp) != EOF);
953 }
954 if (cxt) (void)lib$find_file_end(&cxt);
748a9306 955 if (ok && sts != RMS$_NMF &&
956 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
a0d0e21e 957 if (!ok) {
958 fp = NULL;
959 }
960 else {
961 rewind(tmpfp);
962 IoTYPE(io) = '<';
963 IoIFP(io) = fp = tmpfp;
964 }
965 }
966 }
967#else /* !VMS */
968#ifdef DOSISH
969 sv_setpv(tmpcmd, "perlglob ");
970 sv_catsv(tmpcmd, tmpglob);
971 sv_catpv(tmpcmd, " |");
972#else
973#ifdef CSH
974 sv_setpvn(tmpcmd, cshname, cshlen);
975 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
976 sv_catsv(tmpcmd, tmpglob);
16d20bd9 977 sv_catpv(tmpcmd, "' 2>/dev/null |");
a0d0e21e 978#else
979 sv_setpv(tmpcmd, "echo ");
980 sv_catsv(tmpcmd, tmpglob);
981#if 'z' - 'a' == 25
982 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
983#else
984 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
985#endif
986#endif /* !CSH */
987#endif /* !MSDOS */
988 (void)do_open(last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),Nullfp);
989 fp = IoIFP(io);
990#endif /* !VMS */
991 LEAVE;
992 }
993 }
994 else if (type == OP_GLOB)
995 SP--;
996 }
997 if (!fp) {
748a9306 998 if (dowarn && !(IoFLAGS(io) & IOf_START))
a0d0e21e 999 warn("Read on closed filehandle <%s>", GvENAME(last_in_gv));
1000 if (GIMME == G_SCALAR) {
1001 (void)SvOK_off(TARG);
1002 PUSHTARG;
1003 }
1004 RETURN;
1005 }
1006 if (GIMME == G_ARRAY) {
1007 sv = sv_2mortal(NEWSV(57, 80));
1008 offset = 0;
1009 }
1010 else {
1011 sv = TARG;
1012 (void)SvUPGRADE(sv, SVt_PV);
1013 tmplen = SvLEN(sv); /* remember if already alloced */
1014 if (!tmplen)
1015 Sv_Grow(sv, 80); /* try short-buffering it */
1016 if (type == OP_RCATLINE)
1017 offset = SvCUR(sv);
1018 else
1019 offset = 0;
1020 }
1021 for (;;) {
1022 if (!sv_gets(sv, fp, offset)) {
1023 clearerr(fp);
1024 if (IoFLAGS(io) & IOf_ARGV) {
1025 fp = nextargv(last_in_gv);
1026 if (fp)
1027 continue;
1028 (void)do_close(last_in_gv, FALSE);
1029 IoFLAGS(io) |= IOf_START;
1030 }
1031 else if (type == OP_GLOB) {
1032 (void)do_close(last_in_gv, FALSE);
1033 }
1034 if (GIMME == G_SCALAR) {
1035 (void)SvOK_off(TARG);
1036 PUSHTARG;
1037 }
1038 RETURN;
1039 }
1040 IoLINES(io)++;
1041 XPUSHs(sv);
1042 if (tainting) {
1043 tainted = TRUE;
1044 SvTAINT(sv); /* Anything from the outside world...*/
1045 }
1046 if (type == OP_GLOB) {
1047 char *tmps;
1048
1049 if (SvCUR(sv) > 0)
1050 SvCUR(sv)--;
1051 if (*SvEND(sv) == rschar)
1052 *SvEND(sv) = '\0';
1053 else
1054 SvCUR(sv)++;
1055 for (tmps = SvPVX(sv); *tmps; tmps++)
1056 if (!isALPHA(*tmps) && !isDIGIT(*tmps) &&
1057 strchr("$&*(){}[]'\";\\|?<>~`", *tmps))
1058 break;
1059 if (*tmps && Stat(SvPVX(sv), &statbuf) < 0) {
1060 (void)POPs; /* Unmatched wildcard? Chuck it... */
1061 continue;
1062 }
1063 }
1064 if (GIMME == G_ARRAY) {
1065 if (SvLEN(sv) - SvCUR(sv) > 20) {
1066 SvLEN_set(sv, SvCUR(sv)+1);
1067 Renew(SvPVX(sv), SvLEN(sv), char);
1068 }
1069 sv = sv_2mortal(NEWSV(58, 80));
1070 continue;
1071 }
1072 else if (!tmplen && SvLEN(sv) - SvCUR(sv) > 80) {
1073 /* try to reclaim a bit of scalar space (only on 1st alloc) */
1074 if (SvCUR(sv) < 60)
1075 SvLEN_set(sv, 80);
1076 else
1077 SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */
1078 Renew(SvPVX(sv), SvLEN(sv), char);
1079 }
1080 RETURN;
1081 }
1082}
1083
1084PP(pp_enter)
1085{
1086 dSP;
1087 register CONTEXT *cx;
1088 I32 gimme;
1089
1090 /*
1091 * We don't just use the GIMME macro here because it assumes there's
1092 * already a context, which ain't necessarily so at initial startup.
1093 */
1094
1095 if (op->op_flags & OPf_KNOW)
1096 gimme = op->op_flags & OPf_LIST;
1097 else if (cxstack_ix >= 0)
1098 gimme = cxstack[cxstack_ix].blk_gimme;
1099 else
1100 gimme = G_SCALAR;
1101
1102 ENTER;
1103
1104 SAVETMPS;
1105 PUSHBLOCK(cx, CXt_BLOCK, sp);
1106
1107 RETURN;
1108}
1109
1110PP(pp_helem)
1111{
1112 dSP;
1113 SV** svp;
1114 SV *keysv = POPs;
1115 STRLEN keylen;
1116 char *key = SvPV(keysv, keylen);
1117 HV *hv = (HV*)POPs;
1118 I32 lval = op->op_flags & OPf_MOD;
1119
1120 if (SvTYPE(hv) != SVt_PVHV)
1121 RETPUSHUNDEF;
1122 svp = hv_fetch(hv, key, keylen, lval);
1123 if (lval) {
1124 if (!svp || *svp == &sv_undef)
1125 DIE(no_helem, key);
1126 if (op->op_private & OPpLVAL_INTRO)
1127 save_svref(svp);
1128 else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV)) {
1129 SV* sv = *svp;
1130 if (SvGMAGICAL(sv))
1131 mg_get(sv);
1132 if (!SvOK(sv)) {
1133 (void)SvUPGRADE(sv, SVt_RV);
1134 SvRV(sv) = (op->op_private & OPpDEREF_HV ?
1135 (SV*)newHV() : (SV*)newAV());
1136 SvROK_on(sv);
1137 SvSETMAGIC(sv);
1138 }
1139 }
1140 }
1141 PUSHs(svp ? *svp : &sv_undef);
1142 RETURN;
1143}
1144
1145PP(pp_leave)
1146{
1147 dSP;
1148 register CONTEXT *cx;
1149 register SV **mark;
1150 SV **newsp;
1151 PMOP *newpm;
1152 I32 gimme;
1153
1154 if (op->op_flags & OPf_SPECIAL) {
1155 cx = &cxstack[cxstack_ix];
1156 cx->blk_oldpm = curpm; /* fake block should preserve $1 et al */
1157 }
1158
1159 POPBLOCK(cx,newpm);
1160
1161 if (op->op_flags & OPf_KNOW)
1162 gimme = op->op_flags & OPf_LIST;
1163 else if (cxstack_ix >= 0)
1164 gimme = cxstack[cxstack_ix].blk_gimme;
1165 else
1166 gimme = G_SCALAR;
1167
1168 if (gimme == G_SCALAR) {
1169 if (op->op_private & OPpLEAVE_VOID)
1170 SP = newsp;
1171 else {
1172 MARK = newsp + 1;
1173 if (MARK <= SP)
1174 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
1175 *MARK = TOPs;
1176 else
1177 *MARK = sv_mortalcopy(TOPs);
1178 else {
1179 MEXTEND(mark,0);
1180 *MARK = &sv_undef;
1181 }
1182 SP = MARK;
1183 }
1184 }
1185 else {
1186 for (mark = newsp + 1; mark <= SP; mark++)
1187 if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP)))
1188 *mark = sv_mortalcopy(*mark);
1189 /* in case LEAVE wipes old return values */
1190 }
1191 curpm = newpm; /* Don't pop $1 et al till now */
1192
1193 LEAVE;
1194
1195 RETURN;
1196}
1197
1198PP(pp_iter)
1199{
1200 dSP;
1201 register CONTEXT *cx;
1202 SV *sv;
1203
1204 EXTEND(sp, 1);
1205 cx = &cxstack[cxstack_ix];
1206 if (cx->cx_type != CXt_LOOP)
1207 DIE("panic: pp_iter");
1208
1209 if (cx->blk_loop.iterix >= cx->blk_oldsp)
1210 RETPUSHNO;
1211
1212 if (sv = AvARRAY(cx->blk_loop.iterary)[++cx->blk_loop.iterix]) {
1213 SvTEMP_off(sv);
1214 *cx->blk_loop.itervar = sv;
1215 }
1216 else
1217 *cx->blk_loop.itervar = &sv_undef;
1218
1219 RETPUSHYES;
1220}
1221
1222PP(pp_subst)
1223{
1224 dSP; dTARG;
1225 register PMOP *pm = cPMOP;
1226 PMOP *rpm = pm;
1227 register SV *dstr;
1228 register char *s;
1229 char *strend;
1230 register char *m;
1231 char *c;
1232 register char *d;
1233 STRLEN clen;
1234 I32 iters = 0;
1235 I32 maxiters;
1236 register I32 i;
1237 bool once;
1238 char *orig;
1239 I32 safebase;
1240 register REGEXP *rx = pm->op_pmregexp;
1241 STRLEN len;
1242 int force_on_match = 0;
1243
1244 if (pm->op_pmflags & PMf_CONST) /* known replacement string? */
1245 dstr = POPs;
1246 if (op->op_flags & OPf_STACKED)
1247 TARG = POPs;
1248 else {
1249 TARG = GvSV(defgv);
1250 EXTEND(SP,1);
1251 }
1252 s = SvPV(TARG, len);
748a9306 1253 if (!SvPOKp(TARG) || SvREADONLY(TARG))
a0d0e21e 1254 force_on_match = 1;
1255
1256 force_it:
1257 if (!pm || !s)
1258 DIE("panic: do_subst");
1259
1260 strend = s + len;
1261 maxiters = (strend - s) + 10;
1262
1263 if (!rx->prelen && curpm) {
1264 pm = curpm;
1265 rx = pm->op_pmregexp;
1266 }
1267 safebase = ((!rx || !rx->nparens) && !sawampersand);
1268 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
1269 SAVEINT(multiline);
1270 multiline = pm->op_pmflags & PMf_MULTILINE;
1271 }
1272 orig = m = s;
1273 if (pm->op_pmshort) {
1274 if (pm->op_pmflags & PMf_SCANFIRST) {
1275 if (SvSCREAM(TARG)) {
1276 if (screamfirst[BmRARE(pm->op_pmshort)] < 0)
1277 goto nope;
1278 else if (!(s = screaminstr(TARG, pm->op_pmshort)))
1279 goto nope;
1280 }
1281 else if (!(s = fbm_instr((unsigned char*)s, (unsigned char*)strend,
1282 pm->op_pmshort)))
1283 goto nope;
1284 if (s && rx->regback >= 0) {
1285 ++BmUSEFUL(pm->op_pmshort);
1286 s -= rx->regback;
1287 if (s < m)
1288 s = m;
1289 }
1290 else
1291 s = m;
1292 }
1293 else if (!multiline) {
1294 if (*SvPVX(pm->op_pmshort) != *s ||
1295 bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) {
1296 if (pm->op_pmflags & PMf_FOLD) {
1297 if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) )
1298 goto nope;
1299 }
1300 else
1301 goto nope;
1302 }
1303 }
1304 if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) {
1305 SvREFCNT_dec(pm->op_pmshort);
1306 pm->op_pmshort = Nullsv; /* opt is being useless */
1307 }
1308 }
1309 once = !(rpm->op_pmflags & PMf_GLOBAL);
1310 if (rpm->op_pmflags & PMf_CONST) { /* known replacement string? */
1311 c = SvPV(dstr, clen);
1312 if (clen <= rx->minlen) {
1313 /* can do inplace substitution */
1314 if (regexec(rx, s, strend, orig, 0,
1315 SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
1316 if (force_on_match) {
1317 force_on_match = 0;
1318 s = SvPV_force(TARG, len);
1319 goto force_it;
1320 }
1321 if (rx->subbase) /* oops, no we can't */
1322 goto long_way;
1323 d = s;
1324 curpm = pm;
1325 SvSCREAM_off(TARG); /* disable possible screamer */
1326 if (once) {
1327 m = rx->startp[0];
1328 d = rx->endp[0];
1329 s = orig;
1330 if (m - s > strend - d) { /* faster to shorten from end */
1331 if (clen) {
1332 Copy(c, m, clen, char);
1333 m += clen;
1334 }
1335 i = strend - d;
1336 if (i > 0) {
1337 Move(d, m, i, char);
1338 m += i;
1339 }
1340 *m = '\0';
1341 SvCUR_set(TARG, m - s);
1342 (void)SvPOK_only(TARG);
1343 SvSETMAGIC(TARG);
1344 PUSHs(&sv_yes);
1345 RETURN;
1346 }
1347 /*SUPPRESS 560*/
1348 else if (i = m - s) { /* faster from front */
1349 d -= clen;
1350 m = d;
1351 sv_chop(TARG, d-i);
1352 s += i;
1353 while (i--)
1354 *--d = *--s;
1355 if (clen)
1356 Copy(c, m, clen, char);
1357 (void)SvPOK_only(TARG);
1358 SvSETMAGIC(TARG);
1359 PUSHs(&sv_yes);
1360 RETURN;
1361 }
1362 else if (clen) {
1363 d -= clen;
1364 sv_chop(TARG, d);
1365 Copy(c, d, clen, char);
1366 (void)SvPOK_only(TARG);
1367 SvSETMAGIC(TARG);
1368 PUSHs(&sv_yes);
1369 RETURN;
1370 }
1371 else {
1372 sv_chop(TARG, d);
1373 (void)SvPOK_only(TARG);
1374 SvSETMAGIC(TARG);
1375 PUSHs(&sv_yes);
1376 RETURN;
1377 }
1378 /* NOTREACHED */
1379 }
1380 do {
1381 if (iters++ > maxiters)
1382 DIE("Substitution loop");
1383 m = rx->startp[0];
1384 /*SUPPRESS 560*/
1385 if (i = m - s) {
1386 if (s != d)
1387 Move(s, d, i, char);
1388 d += i;
1389 }
1390 if (clen) {
1391 Copy(c, d, clen, char);
1392 d += clen;
1393 }
1394 s = rx->endp[0];
1395 } while (regexec(rx, s, strend, orig, s == m,
1396 Nullsv, TRUE)); /* (don't match same null twice) */
1397 if (s != d) {
1398 i = strend - s;
1399 SvCUR_set(TARG, d - SvPVX(TARG) + i);
1400 Move(s, d, i+1, char); /* include the Null */
1401 }
1402 (void)SvPOK_only(TARG);
1403 SvSETMAGIC(TARG);
1404 PUSHs(sv_2mortal(newSViv((I32)iters)));
1405 RETURN;
1406 }
1407 PUSHs(&sv_no);
1408 RETURN;
1409 }
1410 }
1411 else
1412 c = Nullch;
1413 if (regexec(rx, s, strend, orig, 0,
1414 SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
1415 long_way:
1416 if (force_on_match) {
1417 force_on_match = 0;
1418 s = SvPV_force(TARG, len);
1419 goto force_it;
1420 }
1421 dstr = NEWSV(25, sv_len(TARG));
1422 sv_setpvn(dstr, m, s-m);
1423 curpm = pm;
1424 if (!c) {
1425 register CONTEXT *cx;
1426 PUSHSUBST(cx);
1427 RETURNOP(cPMOP->op_pmreplroot);
1428 }
1429 do {
1430 if (iters++ > maxiters)
1431 DIE("Substitution loop");
1432 if (rx->subbase && rx->subbase != orig) {
1433 m = s;
1434 s = orig;
1435 orig = rx->subbase;
1436 s = orig + (m - s);
1437 strend = s + (strend - m);
1438 }
1439 m = rx->startp[0];
1440 sv_catpvn(dstr, s, m-s);
1441 s = rx->endp[0];
1442 if (clen)
1443 sv_catpvn(dstr, c, clen);
1444 if (once)
1445 break;
1446 } while (regexec(rx, s, strend, orig, s == m, Nullsv,
1447 safebase));
1448 sv_catpvn(dstr, s, strend - s);
748a9306 1449
cb0b1708 1450 Safefree(SvPVX(TARG));
748a9306 1451 SvPVX(TARG) = SvPVX(dstr);
1452 SvCUR_set(TARG, SvCUR(dstr));
1453 SvLEN_set(TARG, SvLEN(dstr));
1454 SvPVX(dstr) = 0;
1455 sv_free(dstr);
1456
a0d0e21e 1457 (void)SvPOK_only(TARG);
1458 SvSETMAGIC(TARG);
1459 PUSHs(sv_2mortal(newSViv((I32)iters)));
1460 RETURN;
1461 }
1462 PUSHs(&sv_no);
1463 RETURN;
1464
1465nope:
1466 ++BmUSEFUL(pm->op_pmshort);
1467 PUSHs(&sv_no);
1468 RETURN;
1469}
1470
1471PP(pp_grepwhile)
1472{
1473 dSP;
1474
1475 if (SvTRUEx(POPs))
1476 stack_base[markstack_ptr[-1]++] = stack_base[*markstack_ptr];
1477 ++*markstack_ptr;
1478 LEAVE; /* exit inner scope */
1479
1480 /* All done yet? */
1481 if (stack_base + *markstack_ptr > sp) {
1482 I32 items;
1483
1484 LEAVE; /* exit outer scope */
1485 (void)POPMARK; /* pop src */
1486 items = --*markstack_ptr - markstack_ptr[-1];
1487 (void)POPMARK; /* pop dst */
1488 SP = stack_base + POPMARK; /* pop original mark */
1489 if (GIMME != G_ARRAY) {
1490 dTARGET;
1491 XPUSHi(items);
1492 RETURN;
1493 }
1494 SP += items;
1495 RETURN;
1496 }
1497 else {
1498 SV *src;
1499
1500 ENTER; /* enter inner scope */
1501 SAVESPTR(curpm);
1502
1503 src = stack_base[*markstack_ptr];
1504 SvTEMP_off(src);
1505 GvSV(defgv) = src;
1506
1507 RETURNOP(cLOGOP->op_other);
1508 }
1509}
1510
1511PP(pp_leavesub)
1512{
1513 dSP;
1514 SV **mark;
1515 SV **newsp;
1516 PMOP *newpm;
1517 I32 gimme;
1518 register CONTEXT *cx;
1519
1520 POPBLOCK(cx,newpm);
1521 POPSUB(cx);
1522
1523 if (gimme == G_SCALAR) {
1524 MARK = newsp + 1;
1525 if (MARK <= SP)
1526 if (SvFLAGS(TOPs) & SVs_TEMP)
1527 *MARK = TOPs;
1528 else
1529 *MARK = sv_mortalcopy(TOPs);
1530 else {
1531 MEXTEND(mark,0);
1532 *MARK = &sv_undef;
1533 }
1534 SP = MARK;
1535 }
1536 else {
1537 for (mark = newsp + 1; mark <= SP; mark++)
1538 if (!(SvFLAGS(*mark) & SVs_TEMP))
1539 *mark = sv_mortalcopy(*mark);
1540 /* in case LEAVE wipes old return values */
1541 }
1542
1543 if (cx->blk_sub.hasargs) { /* You don't exist; go away. */
1544 AV* av = cx->blk_sub.argarray;
1545
1546 av_clear(av);
1547 AvREAL_off(av);
1548 }
1549 curpm = newpm; /* Don't pop $1 et al till now */
1550
1551 LEAVE;
1552 PUTBACK;
1553 return pop_return();
1554}
1555
1556PP(pp_entersub)
1557{
1558 dSP; dPOPss;
1559 GV *gv;
1560 HV *stash;
1561 register CV *cv;
1562 register CONTEXT *cx;
5d94fbed 1563 I32 gimme;
a0d0e21e 1564
1565 if (!sv)
1566 DIE("Not a CODE reference");
1567 switch (SvTYPE(sv)) {
1568 default:
1569 if (!SvROK(sv)) {
748a9306 1570 char *sym;
1571
a0d0e21e 1572 if (sv == &sv_yes) /* unfound import, ignore */
1573 RETURN;
1574 if (!SvOK(sv))
1575 DIE(no_usym, "a subroutine");
748a9306 1576 sym = SvPV(sv,na);
a0d0e21e 1577 if (op->op_private & HINT_STRICT_REFS)
748a9306 1578 DIE(no_symref, sym, "a subroutine");
1579 cv = perl_get_cv(sym, TRUE);
a0d0e21e 1580 break;
1581 }
1582 cv = (CV*)SvRV(sv);
1583 if (SvTYPE(cv) == SVt_PVCV)
1584 break;
1585 /* FALL THROUGH */
1586 case SVt_PVHV:
1587 case SVt_PVAV:
1588 DIE("Not a CODE reference");
1589 case SVt_PVCV:
1590 cv = (CV*)sv;
1591 break;
1592 case SVt_PVGV:
1593 if (!(cv = GvCV((GV*)sv)))
1594 cv = sv_2cv(sv, &stash, &gv, TRUE);
1595 break;
1596 }
1597
1598 ENTER;
1599 SAVETMPS;
1600
1601 retry:
1602 if (!cv)
1603 DIE("Not a CODE reference");
1604
1605 if (!CvROOT(cv) && !CvXSUB(cv)) {
1606 if (gv = CvGV(cv)) {
1607 SV *tmpstr = sv_newmortal();
1608 GV *ngv;
1609 gv_efullname(tmpstr, gv);
1610 ngv = gv_fetchmethod(GvESTASH(gv), "AUTOLOAD");
1611 if (ngv && ngv != gv && (cv = GvCV(ngv))) { /* One more chance... */
1612 gv = ngv;
1613 sv_setsv(GvSV(CvGV(cv)), tmpstr); /* Set CV's $AUTOLOAD */
1614 goto retry;
1615 }
1616 else
1617 DIE("Undefined subroutine &%s called",SvPVX(tmpstr));
1618 }
1619 DIE("Undefined subroutine called");
1620 }
1621
1622 if ((op->op_private & OPpDEREF_DB) && !CvXSUB(cv)) {
1623 sv = GvSV(DBsub);
1624 save_item(sv);
748a9306 1625 if (SvFLAGS(cv) & SVpcv_ANON) /* Is GV potentially non-unique? */
1626 sv_setsv(sv, newRV((SV*)cv));
1627 else {
1628 gv = CvGV(cv);
1629 gv_efullname(sv,gv);
1630 }
a0d0e21e 1631 cv = GvCV(DBsub);
1632 if (!cv)
1633 DIE("No DBsub routine");
1634 }
1635
5d94fbed 1636 gimme = GIMME;
1637
a0d0e21e 1638 if (CvXSUB(cv)) {
1639 if (CvOLDSTYLE(cv)) {
ecfc5424 1640 I32 (*fp3)_((int,int,int));
a0d0e21e 1641 dMARK;
1642 register I32 items = SP - MARK;
1643 while (sp > mark) {
1644 sp[1] = sp[0];
1645 sp--;
1646 }
1647 stack_sp = mark + 1;
ecfc5424 1648 fp3 = (I32(*)_((int,int,int)))CvXSUB(cv);
1649 items = (*fp3)(CvXSUBANY(cv).any_i32,
1650 MARK - stack_base + 1,
1651 items);
a0d0e21e 1652 stack_sp = stack_base + items;
1653 }
1654 else {
748a9306 1655 I32 markix = TOPMARK;
1656
a0d0e21e 1657 PUTBACK;
1658 (void)(*CvXSUB(cv))(cv);
748a9306 1659
1660 /* Enforce some sanity in scalar context. */
5d94fbed 1661 if (gimme == G_SCALAR && ++markix != stack_sp - stack_base ) {
748a9306 1662 if (markix > stack_sp - stack_base)
1663 *(stack_base + markix) = &sv_undef;
1664 else
1665 *(stack_base + markix) = *stack_sp;
1666 stack_sp = stack_base + markix;
1667 }
a0d0e21e 1668 }
1669 LEAVE;
1670 return NORMAL;
1671 }
1672 else {
1673 dMARK;
1674 register I32 items = SP - MARK;
1675 I32 hasargs = (op->op_flags & OPf_STACKED) != 0;
a0d0e21e 1676 AV* padlist = CvPADLIST(cv);
1677 SV** svp = AvARRAY(padlist);
1678 push_return(op->op_next);
1679 PUSHBLOCK(cx, CXt_SUB, MARK);
1680 PUSHSUB(cx);
1681 CvDEPTH(cv)++;
1682 if (CvDEPTH(cv) < 2)
1683 (void)SvREFCNT_inc(cv);
1684 else { /* save temporaries on recursion? */
1685 if (CvDEPTH(cv) == 100 && dowarn)
1686 warn("Deep recursion on subroutine \"%s\"",GvENAME(CvGV(cv)));
1687 if (CvDEPTH(cv) > AvFILL(padlist)) {
1688 AV *av;
1689 AV *newpad = newAV();
4aa0a1f7 1690 SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]);
a0d0e21e 1691 I32 ix = AvFILL((AV*)svp[1]);
1692 svp = AvARRAY(svp[0]);
748a9306 1693 for ( ;ix > 0; ix--) {
a0d0e21e 1694 if (svp[ix] != &sv_undef) {
748a9306 1695 char *name = SvPVX(svp[ix]);
1696 if (SvFLAGS(svp[ix]) & SVf_FAKE) { /* outer lexical? */
1697 av_store(newpad, ix,
4aa0a1f7 1698 SvREFCNT_inc(oldpad[ix]) );
748a9306 1699 }
1700 else { /* our own lexical */
1701 if (*name == '@')
1702 av_store(newpad, ix, sv = (SV*)newAV());
1703 else if (*name == '%')
1704 av_store(newpad, ix, sv = (SV*)newHV());
1705 else
1706 av_store(newpad, ix, sv = NEWSV(0,0));
1707 SvPADMY_on(sv);
1708 }
a0d0e21e 1709 }
1710 else {
748a9306 1711 av_store(newpad, ix, sv = NEWSV(0,0));
a0d0e21e 1712 SvPADTMP_on(sv);
1713 }
1714 }
1715 av = newAV(); /* will be @_ */
1716 av_extend(av, 0);
1717 av_store(newpad, 0, (SV*)av);
1718 AvFLAGS(av) = AVf_REIFY;
1719 av_store(padlist, CvDEPTH(cv), (SV*)newpad);
1720 AvFILL(padlist) = CvDEPTH(cv);
1721 svp = AvARRAY(padlist);
1722 }
1723 }
1724 SAVESPTR(curpad);
1725 curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
1726 if (hasargs) {
1727 AV* av = (AV*)curpad[0];
1728 SV** ary;
1729
1730 if (AvREAL(av)) {
1731 av_clear(av);
1732 AvREAL_off(av);
1733 }
1734 cx->blk_sub.savearray = GvAV(defgv);
1735 cx->blk_sub.argarray = av;
1736 GvAV(defgv) = cx->blk_sub.argarray;
1737 ++MARK;
1738
1739 if (items > AvMAX(av) + 1) {
1740 ary = AvALLOC(av);
1741 if (AvARRAY(av) != ary) {
1742 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
1743 SvPVX(av) = (char*)ary;
1744 }
1745 if (items > AvMAX(av) + 1) {
1746 AvMAX(av) = items - 1;
1747 Renew(ary,items,SV*);
1748 AvALLOC(av) = ary;
1749 SvPVX(av) = (char*)ary;
1750 }
1751 }
1752 Copy(MARK,AvARRAY(av),items,SV*);
1753 AvFILL(av) = items - 1;
1754
1755 while (items--) {
1756 if (*MARK)
1757 SvTEMP_off(*MARK);
1758 MARK++;
1759 }
1760 }
1761 RETURNOP(CvSTART(cv));
1762 }
1763}
1764
1765PP(pp_aelem)
1766{
1767 dSP;
1768 SV** svp;
748a9306 1769 I32 elem = POPi;
a0d0e21e 1770 AV *av = (AV*)POPs;
1771 I32 lval = op->op_flags & OPf_MOD;
1772
748a9306 1773 if (elem > 0)
1774 elem -= curcop->cop_arybase;
a0d0e21e 1775 if (SvTYPE(av) != SVt_PVAV)
1776 RETPUSHUNDEF;
1777 svp = av_fetch(av, elem, lval);
1778 if (lval) {
1779 if (!svp || *svp == &sv_undef)
1780 DIE(no_aelem, elem);
1781 if (op->op_private & OPpLVAL_INTRO)
1782 save_svref(svp);
1783 else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV)) {
1784 SV* sv = *svp;
1785 if (SvGMAGICAL(sv))
1786 mg_get(sv);
1787 if (!SvOK(sv)) {
1788 (void)SvUPGRADE(sv, SVt_RV);
1789 SvRV(sv) = (op->op_private & OPpDEREF_HV ?
1790 (SV*)newHV() : (SV*)newAV());
1791 SvROK_on(sv);
1792 SvSETMAGIC(sv);
1793 }
1794 }
1795 }
1796 PUSHs(svp ? *svp : &sv_undef);
1797 RETURN;
1798}
1799
1800PP(pp_method)
1801{
1802 dSP;
1803 SV* sv;
1804 SV* ob;
1805 GV* gv;
1806 SV* nm;
1807
1808 nm = TOPs;
1809 sv = *(stack_base + TOPMARK + 1);
1810
1811 gv = 0;
16d20bd9 1812 if (SvGMAGICAL(sv))
1813 mg_get(sv);
a0d0e21e 1814 if (SvROK(sv))
16d20bd9 1815 ob = (SV*)SvRV(sv);
a0d0e21e 1816 else {
1817 GV* iogv;
1818 char* packname = 0;
1819
1820 if (!SvOK(sv) ||
1821 !(packname = SvPV(sv, na)) ||
1822 !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) ||
1823 !(ob=(SV*)GvIO(iogv)))
1824 {
1825 char *name = SvPV(nm, na);
1826 HV *stash;
1827 if (!packname || !isALPHA(*packname))
1828DIE("Can't call method \"%s\" without a package or object reference", name);
1829 if (!(stash = gv_stashpv(packname, FALSE))) {
1830 if (gv_stashpv("UNIVERSAL", FALSE))
1831 stash = gv_stashpv(packname, TRUE);
1832 else
1833 DIE("Can't call method \"%s\" in empty package \"%s\"",
1834 name, packname);
1835 }
1836 gv = gv_fetchmethod(stash,name);
1837 if (!gv)
1838 DIE("Can't locate object method \"%s\" via package \"%s\"",
1839 name, packname);
1840 SETs(gv);
1841 RETURN;
1842 }
748a9306 1843 *(stack_base + TOPMARK + 1) = iogv;
a0d0e21e 1844 }
1845
1846 if (!ob || !SvOBJECT(ob)) {
1847 char *name = SvPV(nm, na);
1848 DIE("Can't call method \"%s\" on unblessed reference", name);
1849 }
1850
1851 if (!gv) { /* nothing cached */
1852 char *name = SvPV(nm, na);
1853 gv = gv_fetchmethod(SvSTASH(ob),name);
1854 if (!gv)
1855 DIE("Can't locate object method \"%s\" via package \"%s\"",
1856 name, HvNAME(SvSTASH(ob)));
1857 }
1858
1859 SETs(gv);
1860 RETURN;
1861}
1862
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