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Okay, here's your official unofficial closure leak patch
[perl5.git] / pp_ctl.c
CommitLineData
a0d0e21e
LW		 1/* pp_ctl.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 * Now far ahead the Road has gone,
12 * And I must follow, if I can,
13 * Pursuing it with eager feet,
14 * Until it joins some larger way
15 * Where many paths and errands meet.
16 * And whither then? I cannot say.
17 */
18
19#include "EXTERN.h"
20#include "perl.h"
21
22#ifndef WORD_ALIGN
23#define WORD_ALIGN sizeof(U16)
24#endif
25
26static OP *doeval _((int gimme));
27static OP *dofindlabel _((OP *op, char *label, OP **opstack));
28static void doparseform _((SV *sv));
29static I32 dopoptoeval _((I32 startingblock));
30static I32 dopoptolabel _((char *label));
31static I32 dopoptoloop _((I32 startingblock));
32static I32 dopoptosub _((I32 startingblock));
33static void save_lines _((AV *array, SV *sv));
34static int sortcmp _((const void *, const void *));
35static int sortcv _((const void *, const void *));
36
37static I32 sortcxix;
38
39PP(pp_wantarray)
40{
41 dSP;
42 I32 cxix;
43 EXTEND(SP, 1);
44
45 cxix = dopoptosub(cxstack_ix);
46 if (cxix < 0)
47 RETPUSHUNDEF;
48
49 if (cxstack[cxix].blk_gimme == G_ARRAY)
50 RETPUSHYES;
51 else
52 RETPUSHNO;
53}
54
55PP(pp_regcmaybe)
56{
57 return NORMAL;
58}
59
60PP(pp_regcomp) {
61 dSP;
62 register PMOP *pm = (PMOP*)cLOGOP->op_other;
63 register char *t;
64 SV *tmpstr;
65 STRLEN len;
66
67 tmpstr = POPs;
68 t = SvPV(tmpstr, len);
69
70 if (pm->op_pmregexp) {
71 regfree(pm->op_pmregexp);
72 pm->op_pmregexp = Null(REGEXP*); /* crucial if regcomp aborts */
73 }
74
75 pm->op_pmregexp = regcomp(t, t + len, pm);
76
77 if (!pm->op_pmregexp->prelen && curpm)
78 pm = curpm;
79 else if (strEQ("\\s+", pm->op_pmregexp->precomp))
80 pm->op_pmflags |= PMf_WHITE;
81
82 if (pm->op_pmflags & PMf_KEEP) {
a0d0e21e
LW		 83 pm->op_pmflags &= ~PMf_RUNTIME; /* no point compiling again */
84 hoistmust(pm);
85 cLOGOP->op_first->op_next = op->op_next;
a0d0e21e
LW		 86 }
87 RETURN;
88}
89
90PP(pp_substcont)
91{
92 dSP;
93 register PMOP *pm = (PMOP*) cLOGOP->op_other;
94 register CONTEXT *cx = &cxstack[cxstack_ix];
95 register SV *dstr = cx->sb_dstr;
96 register char *s = cx->sb_s;
97 register char *m = cx->sb_m;
98 char *orig = cx->sb_orig;
99 register REGEXP *rx = pm->op_pmregexp;
100
101 if (cx->sb_iters++) {
102 if (cx->sb_iters > cx->sb_maxiters)
103 DIE("Substitution loop");
104
105 sv_catsv(dstr, POPs);
106 if (rx->subbase)
107 Safefree(rx->subbase);
108 rx->subbase = cx->sb_subbase;
109
110 /* Are we done */
111 if (cx->sb_once || !regexec(rx, s, cx->sb_strend, orig,
112 s == m, Nullsv, cx->sb_safebase))
113 {
114 SV *targ = cx->sb_targ;
115 sv_catpvn(dstr, s, cx->sb_strend - s);
748a9306
LW		 116
117 SvPVX(targ) = SvPVX(dstr);
118 SvCUR_set(targ, SvCUR(dstr));
119 SvLEN_set(targ, SvLEN(dstr));
120 SvPVX(dstr) = 0;
121 sv_free(dstr);
122
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LW		 123 (void)SvPOK_only(targ);
124 SvSETMAGIC(targ);
125 PUSHs(sv_2mortal(newSViv((I32)cx->sb_iters - 1)));
126 POPSUBST(cx);
127 RETURNOP(pm->op_next);
128 }
129 }
130 if (rx->subbase && rx->subbase != orig) {
131 m = s;
132 s = orig;
133 cx->sb_orig = orig = rx->subbase;
134 s = orig + (m - s);
135 cx->sb_strend = s + (cx->sb_strend - m);
136 }
137 cx->sb_m = m = rx->startp[0];
138 sv_catpvn(dstr, s, m-s);
139 cx->sb_s = rx->endp[0];
140 cx->sb_subbase = rx->subbase;
141
142 rx->subbase = Nullch; /* so recursion works */
143 RETURNOP(pm->op_pmreplstart);
144}
145
146PP(pp_formline)
147{
148 dSP; dMARK; dORIGMARK;
149 register SV *form = *++MARK;
150 register U16 *fpc;
151 register char *t;
152 register char *f;
153 register char *s;
154 register char *send;
155 register I32 arg;
156 register SV *sv;
157 char *item;
158 I32 itemsize;
159 I32 fieldsize;
160 I32 lines = 0;
161 bool chopspace = (strchr(chopset, ' ') != Nullch);
162 char *chophere;
163 char *linemark;
a0d0e21e
LW		 164 double value;
165 bool gotsome;
166 STRLEN len;
167
168 if (!SvCOMPILED(form)) {
169 SvREADONLY_off(form);
170 doparseform(form);
171 }
172
173 SvPV_force(formtarget, len);
174 t = SvGROW(formtarget, len + SvCUR(form) + 1); /* XXX SvCUR bad */
175 t += len;
176 f = SvPV(form, len);
177 /* need to jump to the next word */
178 s = f + len + WORD_ALIGN - SvCUR(form) % WORD_ALIGN;
179
180 fpc = (U16*)s;
181
182 for (;;) {
183 DEBUG_f( {
184 char *name = "???";
185 arg = -1;
186 switch (*fpc) {
187 case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break;
188 case FF_BLANK: arg = fpc[1]; name = "BLANK"; break;
189 case FF_SKIP: arg = fpc[1]; name = "SKIP"; break;
190 case FF_FETCH: arg = fpc[1]; name = "FETCH"; break;
191 case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break;
192
193 case FF_CHECKNL: name = "CHECKNL"; break;
194 case FF_CHECKCHOP: name = "CHECKCHOP"; break;
195 case FF_SPACE: name = "SPACE"; break;
196 case FF_HALFSPACE: name = "HALFSPACE"; break;
197 case FF_ITEM: name = "ITEM"; break;
198 case FF_CHOP: name = "CHOP"; break;
199 case FF_LINEGLOB: name = "LINEGLOB"; break;
200 case FF_NEWLINE: name = "NEWLINE"; break;
201 case FF_MORE: name = "MORE"; break;
202 case FF_LINEMARK: name = "LINEMARK"; break;
203 case FF_END: name = "END"; break;
204 }
205 if (arg >= 0)
206 fprintf(stderr, "%-16s%ld\n", name, (long) arg);
207 else
208 fprintf(stderr, "%-16s\n", name);
209 } )
210 switch (*fpc++) {
211 case FF_LINEMARK:
212 linemark = t;
a0d0e21e
LW		 213 lines++;
214 gotsome = FALSE;
215 break;
216
217 case FF_LITERAL:
218 arg = *fpc++;
219 while (arg--)
220 *t++ = *f++;
221 break;
222
223 case FF_SKIP:
224 f += *fpc++;
225 break;
226
227 case FF_FETCH:
228 arg = *fpc++;
229 f += arg;
230 fieldsize = arg;
231
232 if (MARK < SP)
233 sv = *++MARK;
234 else {
235 sv = &sv_no;
236 if (dowarn)
237 warn("Not enough format arguments");
238 }
239 break;
240
241 case FF_CHECKNL:
242 item = s = SvPV(sv, len);
243 itemsize = len;
244 if (itemsize > fieldsize)
245 itemsize = fieldsize;
246 send = chophere = s + itemsize;
247 while (s < send) {
248 if (*s & ~31)
249 gotsome = TRUE;
250 else if (*s == '\n')
251 break;
252 s++;
253 }
254 itemsize = s - item;
255 break;
256
257 case FF_CHECKCHOP:
258 item = s = SvPV(sv, len);
259 itemsize = len;
260 if (itemsize <= fieldsize) {
261 send = chophere = s + itemsize;
262 while (s < send) {
263 if (*s == '\r') {
264 itemsize = s - item;
265 break;
266 }
267 if (*s++ & ~31)
268 gotsome = TRUE;
269 }
270 }
271 else {
272 itemsize = fieldsize;
273 send = chophere = s + itemsize;
274 while (s < send || (s == send && isSPACE(*s))) {
275 if (isSPACE(*s)) {
276 if (chopspace)
277 chophere = s;
278 if (*s == '\r')
279 break;
280 }
281 else {
282 if (*s & ~31)
283 gotsome = TRUE;
284 if (strchr(chopset, *s))
285 chophere = s + 1;
286 }
287 s++;
288 }
289 itemsize = chophere - item;
290 }
291 break;
292
293 case FF_SPACE:
294 arg = fieldsize - itemsize;
295 if (arg) {
296 fieldsize -= arg;
297 while (arg-- > 0)
298 *t++ = ' ';
299 }
300 break;
301
302 case FF_HALFSPACE:
303 arg = fieldsize - itemsize;
304 if (arg) {
305 arg /= 2;
306 fieldsize -= arg;
307 while (arg-- > 0)
308 *t++ = ' ';
309 }
310 break;
311
312 case FF_ITEM:
313 arg = itemsize;
314 s = item;
315 while (arg--) {
316#if 'z' - 'a' != 25
317 int ch = *t++ = *s++;
318 if (!iscntrl(ch))
319 t[-1] = ' ';
320#else
321 if ( !((*t++ = *s++) & ~31) )
322 t[-1] = ' ';
323#endif
324
325 }
326 break;
327
328 case FF_CHOP:
329 s = chophere;
330 if (chopspace) {
331 while (*s && isSPACE(*s))
332 s++;
333 }
334 sv_chop(sv,s);
335 break;
336
337 case FF_LINEGLOB:
338 item = s = SvPV(sv, len);
339 itemsize = len;
340 if (itemsize) {
341 gotsome = TRUE;
342 send = s + itemsize;
343 while (s < send) {
344 if (*s++ == '\n') {
345 if (s == send)
346 itemsize--;
347 else
348 lines++;
349 }
350 }
351 SvCUR_set(formtarget, t - SvPVX(formtarget));
352 sv_catpvn(formtarget, item, itemsize);
353 SvGROW(formtarget, SvCUR(formtarget) + SvCUR(form) + 1);
354 t = SvPVX(formtarget) + SvCUR(formtarget);
355 }
356 break;
357
358 case FF_DECIMAL:
359 /* If the field is marked with ^ and the value is undefined,
360 blank it out. */
361 arg = *fpc++;
362 if ((arg & 512) && !SvOK(sv)) {
363 arg = fieldsize;
364 while (arg--)
365 *t++ = ' ';
366 break;
367 }
368 gotsome = TRUE;
369 value = SvNV(sv);
370 if (arg & 256) {
371 sprintf(t, "%#*.*f", (int) fieldsize, (int) arg & 255, value);
372 } else {
373 sprintf(t, "%*.0f", (int) fieldsize, value);
374 }
375 t += fieldsize;
376 break;
377
378 case FF_NEWLINE:
379 f++;
380 while (t-- > linemark && *t == ' ') ;
381 t++;
382 *t++ = '\n';
383 break;
384
385 case FF_BLANK:
386 arg = *fpc++;
387 if (gotsome) {
388 if (arg) { /* repeat until fields exhausted? */
389 *t = '\0';
390 SvCUR_set(formtarget, t - SvPVX(formtarget));
391 lines += FmLINES(formtarget);
392 if (lines == 200) {
393 arg = t - linemark;
394 if (strnEQ(linemark, linemark - arg, arg))
395 DIE("Runaway format");
396 }
397 FmLINES(formtarget) = lines;
398 SP = ORIGMARK;
399 RETURNOP(cLISTOP->op_first);
400 }
401 }
402 else {
403 t = linemark;
404 lines--;
405 }
406 break;
407
408 case FF_MORE:
409 if (itemsize) {
410 arg = fieldsize - itemsize;
411 if (arg) {
412 fieldsize -= arg;
413 while (arg-- > 0)
414 *t++ = ' ';
415 }
416 s = t - 3;
417 if (strnEQ(s," ",3)) {
418 while (s > SvPVX(formtarget) && isSPACE(s[-1]))
419 s--;
420 }
421 *s++ = '.';
422 *s++ = '.';
423 *s++ = '.';
424 }
425 break;
426
427 case FF_END:
428 *t = '\0';
429 SvCUR_set(formtarget, t - SvPVX(formtarget));
430 FmLINES(formtarget) += lines;
431 SP = ORIGMARK;
432 RETPUSHYES;
433 }
434 }
435}
436
437PP(pp_grepstart)
438{
439 dSP;
440 SV *src;
441
442 if (stack_base + *markstack_ptr == sp) {
443 (void)POPMARK;
444 if (GIMME != G_ARRAY)
445 XPUSHs(&sv_no);
446 RETURNOP(op->op_next->op_next);
447 }
448 stack_sp = stack_base + *markstack_ptr + 1;
449 pp_pushmark(); /* push dst */
450 pp_pushmark(); /* push src */
451 ENTER; /* enter outer scope */
452
453 SAVETMPS;
454 SAVESPTR(GvSV(defgv));
455
456 ENTER; /* enter inner scope */
457 SAVESPTR(curpm);
458
459 src = stack_base[*markstack_ptr];
460 SvTEMP_off(src);
461 GvSV(defgv) = src;
462
463 PUTBACK;
464 if (op->op_type == OP_MAPSTART)
465 pp_pushmark(); /* push top */
466 return ((LOGOP*)op->op_next)->op_other;
467}
468
469PP(pp_mapstart)
470{
471 DIE("panic: mapstart"); /* uses grepstart */
472}
473
474PP(pp_mapwhile)
475{
476 dSP;
477 I32 diff = (sp - stack_base) - *markstack_ptr;
478 I32 count;
479 I32 shift;
480 SV** src;
481 SV** dst;
482
483 ++markstack_ptr[-1];
484 if (diff) {
485 if (diff > markstack_ptr[-1] - markstack_ptr[-2]) {
486 shift = diff - (markstack_ptr[-1] - markstack_ptr[-2]);
487 count = (sp - stack_base) - markstack_ptr[-1] + 2;
488
489 EXTEND(sp,shift);
490 src = sp;
491 dst = (sp += shift);
492 markstack_ptr[-1] += shift;
493 *markstack_ptr += shift;
494 while (--count)
495 *dst-- = *src--;
496 }
497 dst = stack_base + (markstack_ptr[-2] += diff) - 1;
498 ++diff;
499 while (--diff)
500 *dst-- = SvTEMP(TOPs) ? POPs : sv_mortalcopy(POPs);
501 }
502 LEAVE; /* exit inner scope */
503
504 /* All done yet? */
505 if (markstack_ptr[-1] > *markstack_ptr) {
506 I32 items;
507
508 (void)POPMARK; /* pop top */
509 LEAVE; /* exit outer scope */
510 (void)POPMARK; /* pop src */
511 items = --*markstack_ptr - markstack_ptr[-1];
512 (void)POPMARK; /* pop dst */
513 SP = stack_base + POPMARK; /* pop original mark */
514 if (GIMME != G_ARRAY) {
515 dTARGET;
516 XPUSHi(items);
517 RETURN;
518 }
519 SP += items;
520 RETURN;
521 }
522 else {
523 SV *src;
524
525 ENTER; /* enter inner scope */
526 SAVESPTR(curpm);
527
528 src = stack_base[markstack_ptr[-1]];
529 SvTEMP_off(src);
530 GvSV(defgv) = src;
531
532 RETURNOP(cLOGOP->op_other);
533 }
534}
535
536
537PP(pp_sort)
538{
539 dSP; dMARK; dORIGMARK;
540 register SV **up;
541 SV **myorigmark = ORIGMARK;
542 register I32 max;
543 HV *stash;
544 GV *gv;
545 CV *cv;
546 I32 gimme = GIMME;
547 OP* nextop = op->op_next;
548
549 if (gimme != G_ARRAY) {
550 SP = MARK;
551 RETPUSHUNDEF;
552 }
553
554 if (op->op_flags & OPf_STACKED) {
555 ENTER;
556 if (op->op_flags & OPf_SPECIAL) {
557 OP *kid = cLISTOP->op_first->op_sibling; /* pass pushmark */
558 kid = kUNOP->op_first; /* pass rv2gv */
559 kid = kUNOP->op_first; /* pass leave */
560 sortcop = kid->op_next;
561 stash = curcop->cop_stash;
562 }
563 else {
564 cv = sv_2cv(*++MARK, &stash, &gv, 0);
565 if (!(cv && CvROOT(cv))) {
566 if (gv) {
567 SV *tmpstr = sv_newmortal();
568 gv_efullname(tmpstr, gv);
569 if (cv && CvXSUB(cv))
570 DIE("Xsub \"%s\" called in sort", SvPVX(tmpstr));
571 DIE("Undefined sort subroutine \"%s\" called",
572 SvPVX(tmpstr));
573 }
574 if (cv) {
575 if (CvXSUB(cv))
576 DIE("Xsub called in sort");
577 DIE("Undefined subroutine in sort");
578 }
579 DIE("Not a CODE reference in sort");
580 }
581 sortcop = CvSTART(cv);
582 SAVESPTR(CvROOT(cv)->op_ppaddr);
583 CvROOT(cv)->op_ppaddr = ppaddr[OP_NULL];
584
585 SAVESPTR(curpad);
586 curpad = AvARRAY((AV*)AvARRAY(CvPADLIST(cv))[1]);
587 }
588 }
589 else {
590 sortcop = Nullop;
591 stash = curcop->cop_stash;
592 }
593
594 up = myorigmark + 1;
595 while (MARK < SP) { /* This may or may not shift down one here. */
596 /*SUPPRESS 560*/
597 if (*up = *++MARK) { /* Weed out nulls. */
598 if (!SvPOK(*up))
599 (void)sv_2pv(*up, &na);
600 else
601 SvTEMP_off(*up);
602 up++;
603 }
604 }
605 max = --up - myorigmark;
606 if (sortcop) {
607 if (max > 1) {
608 AV *oldstack;
609 CONTEXT *cx;
610 SV** newsp;
611
612 SAVETMPS;
613 SAVESPTR(op);
614
615 oldstack = stack;
616 if (!sortstack) {
617 sortstack = newAV();
618 AvREAL_off(sortstack);
619 av_extend(sortstack, 32);
620 }
621 SWITCHSTACK(stack, sortstack);
622 if (sortstash != stash) {
623 firstgv = gv_fetchpv("a", TRUE, SVt_PV);
624 secondgv = gv_fetchpv("b", TRUE, SVt_PV);
625 sortstash = stash;
626 }
627
628 SAVESPTR(GvSV(firstgv));
629 SAVESPTR(GvSV(secondgv));
630 PUSHBLOCK(cx, CXt_LOOP, stack_base);
631 sortcxix = cxstack_ix;
632
633 qsort((char*)(myorigmark+1), max, sizeof(SV*), sortcv);
634
635 POPBLOCK(cx,curpm);
636 SWITCHSTACK(sortstack, oldstack);
637 }
638 LEAVE;
639 }
640 else {
641 if (max > 1) {
642 MEXTEND(SP, 20); /* Can't afford stack realloc on signal. */
643 qsort((char*)(ORIGMARK+1), max, sizeof(SV*), sortcmp);
644 }
645 }
646 stack_sp = ORIGMARK + max;
647 return nextop;
648}
649
650/* Range stuff. */
651
652PP(pp_range)
653{
654 if (GIMME == G_ARRAY)
655 return cCONDOP->op_true;
656 return SvTRUEx(PAD_SV(op->op_targ)) ? cCONDOP->op_false : cCONDOP->op_true;
657}
658
659PP(pp_flip)
660{
661 dSP;
662
663 if (GIMME == G_ARRAY) {
664 RETURNOP(((CONDOP*)cUNOP->op_first)->op_false);
665 }
666 else {
667 dTOPss;
668 SV *targ = PAD_SV(op->op_targ);
669
670 if ((op->op_private & OPpFLIP_LINENUM)
671 ? last_in_gv && SvIV(sv) == IoLINES(GvIOp(last_in_gv))
672 : SvTRUE(sv) ) {
673 sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1);
674 if (op->op_flags & OPf_SPECIAL) {
675 sv_setiv(targ, 1);
676 RETURN;
677 }
678 else {
679 sv_setiv(targ, 0);
680 sp--;
681 RETURNOP(((CONDOP*)cUNOP->op_first)->op_false);
682 }
683 }
684 sv_setpv(TARG, "");
685 SETs(targ);
686 RETURN;
687 }
688}
689
690PP(pp_flop)
691{
692 dSP;
693
694 if (GIMME == G_ARRAY) {
695 dPOPPOPssrl;
696 register I32 i;
697 register SV *sv;
698 I32 max;
699
700 if (SvNIOK(left) || !SvPOK(left) ||
701 (looks_like_number(left) && *SvPVX(left) != '0') ) {
702 i = SvIV(left);
703 max = SvIV(right);
704 if (max > i)
705 EXTEND(SP, max - i + 1);
706 while (i <= max) {
707 sv = sv_mortalcopy(&sv_no);
708 sv_setiv(sv,i++);
709 PUSHs(sv);
710 }
711 }
712 else {
713 SV *final = sv_mortalcopy(right);
714 STRLEN len;
715 char *tmps = SvPV(final, len);
716
717 sv = sv_mortalcopy(left);
718 while (!SvNIOK(sv) && SvCUR(sv) <= len &&
719 strNE(SvPVX(sv),tmps) ) {
720 XPUSHs(sv);
721 sv = sv_2mortal(newSVsv(sv));
722 sv_inc(sv);
723 }
724 if (strEQ(SvPVX(sv),tmps))
725 XPUSHs(sv);
726 }
727 }
728 else {
729 dTOPss;
730 SV *targ = PAD_SV(cUNOP->op_first->op_targ);
731 sv_inc(targ);
732 if ((op->op_private & OPpFLIP_LINENUM)
733 ? last_in_gv && SvIV(sv) == IoLINES(GvIOp(last_in_gv))
734 : SvTRUE(sv) ) {
735 sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0);
736 sv_catpv(targ, "E0");
737 }
738 SETs(targ);
739 }
740
741 RETURN;
742}
743
744/* Control. */
745
746static I32
747dopoptolabel(label)
748char *label;
749{
750 register I32 i;
751 register CONTEXT *cx;
752
753 for (i = cxstack_ix; i >= 0; i--) {
754 cx = &cxstack[i];
755 switch (cx->cx_type) {
756 case CXt_SUBST:
757 if (dowarn)
758 warn("Exiting substitution via %s", op_name[op->op_type]);
759 break;
760 case CXt_SUB:
761 if (dowarn)
762 warn("Exiting subroutine via %s", op_name[op->op_type]);
763 break;
764 case CXt_EVAL:
765 if (dowarn)
766 warn("Exiting eval via %s", op_name[op->op_type]);
767 break;
768 case CXt_LOOP:
769 if (!cx->blk_loop.label ||
770 strNE(label, cx->blk_loop.label) ) {
771 DEBUG_l(deb("(Skipping label #%d %s)\n",
772 i, cx->blk_loop.label));
773 continue;
774 }
775 DEBUG_l( deb("(Found label #%d %s)\n", i, label));
776 return i;
777 }
778 }
779 return i;
780}
781
782static I32
783dopoptosub(startingblock)
784I32 startingblock;
785{
786 I32 i;
787 register CONTEXT *cx;
788 for (i = startingblock; i >= 0; i--) {
789 cx = &cxstack[i];
790 switch (cx->cx_type) {
791 default:
792 continue;
793 case CXt_EVAL:
794 case CXt_SUB:
795 DEBUG_l( deb("(Found sub #%d)\n", i));
796 return i;
797 }
798 }
799 return i;
800}
801
802static I32
803dopoptoeval(startingblock)
804I32 startingblock;
805{
806 I32 i;
807 register CONTEXT *cx;
808 for (i = startingblock; i >= 0; i--) {
809 cx = &cxstack[i];
810 switch (cx->cx_type) {
811 default:
812 continue;
813 case CXt_EVAL:
814 DEBUG_l( deb("(Found eval #%d)\n", i));
815 return i;
816 }
817 }
818 return i;
819}
820
821static I32
822dopoptoloop(startingblock)
823I32 startingblock;
824{
825 I32 i;
826 register CONTEXT *cx;
827 for (i = startingblock; i >= 0; i--) {
828 cx = &cxstack[i];
829 switch (cx->cx_type) {
830 case CXt_SUBST:
831 if (dowarn)
832 warn("Exiting substitition via %s", op_name[op->op_type]);
833 break;
834 case CXt_SUB:
835 if (dowarn)
836 warn("Exiting subroutine via %s", op_name[op->op_type]);
837 break;
838 case CXt_EVAL:
839 if (dowarn)
840 warn("Exiting eval via %s", op_name[op->op_type]);
841 break;
842 case CXt_LOOP:
843 DEBUG_l( deb("(Found loop #%d)\n", i));
844 return i;
845 }
846 }
847 return i;
848}
849
850void
851dounwind(cxix)
852I32 cxix;
853{
854 register CONTEXT *cx;
855 SV **newsp;
856 I32 optype;
857
858 while (cxstack_ix > cxix) {
859 cx = &cxstack[cxstack_ix--];
860 DEBUG_l(fprintf(stderr, "Unwinding block %ld, type %s\n", (long) cxstack_ix+1,
861 block_type[cx->cx_type]));
862 /* Note: we don't need to restore the base context info till the end. */
863 switch (cx->cx_type) {
864 case CXt_SUB:
865 POPSUB(cx);
866 break;
867 case CXt_EVAL:
868 POPEVAL(cx);
869 break;
870 case CXt_LOOP:
871 POPLOOP(cx);
872 break;
873 case CXt_SUBST:
874 break;
875 }
876 }
877}
878
ecfc5424 879#ifdef I_STDARG
a0d0e21e
LW		 880OP *
881die(char* pat, ...)
882#else
883/*VARARGS0*/
884OP *
885die(pat, va_alist)
886 char *pat;
887 va_dcl
888#endif
889{
890 va_list args;
891 char *message;
892 int oldrunlevel = runlevel;
893 int was_in_eval = in_eval;
748a9306
LW		 894 HV *stash;
895 GV *gv;
896 CV *cv;
a0d0e21e
LW		 897
898#ifdef I_STDARG
899 va_start(args, pat);
900#else
901 va_start(args);
902#endif
903 message = mess(pat, &args);
904 va_end(args);
748a9306
LW		 905 if (diehook && (cv = sv_2cv(diehook, &stash, &gv, 0)) && !CvDEPTH(cv)) {
906 dSP;
907
908 PUSHMARK(sp);
909 EXTEND(sp, 1);
910 PUSHs(sv_2mortal(newSVpv(message,0)));
911 PUTBACK;
912 perl_call_sv((SV*)cv, G_DISCARD);
913 }
a0d0e21e
LW		 914 restartop = die_where(message);
915 if ((!restartop && was_in_eval) || oldrunlevel > 1)
916 longjmp(top_env, 3);
917 return restartop;
918}
919
920OP *
921die_where(message)
922char *message;
923{
924 if (in_eval) {
925 I32 cxix;
926 register CONTEXT *cx;
927 I32 gimme;
928 SV **newsp;
748a9306
LW		 929 SV *errsv;
930
931 errsv = GvSV(gv_fetchpv("@",TRUE, SVt_PV));
932 /* As destructors may produce errors we set $@ at the last moment */
933 sv_setpv(errsv, ""); /* clear $@ before destroying */
a0d0e21e 934
a0d0e21e
LW		 935 cxix = dopoptoeval(cxstack_ix);
936 if (cxix >= 0) {
937 I32 optype;
938
939 if (cxix < cxstack_ix)
940 dounwind(cxix);
941
942 POPBLOCK(cx,curpm);
943 if (cx->cx_type != CXt_EVAL) {
944 fprintf(stderr, "panic: die %s", message);
945 my_exit(1);
946 }
947 POPEVAL(cx);
948
949 if (gimme == G_SCALAR)
950 *++newsp = &sv_undef;
951 stack_sp = newsp;
952
953 LEAVE;
748a9306
LW		 954
955 sv_insert(errsv, 0, 0, message, strlen(message));
a0d0e21e
LW		 956 if (optype == OP_REQUIRE)
957 DIE("%s", SvPVx(GvSV(gv_fetchpv("@",TRUE, SVt_PV)), na));
958 return pop_return();
959 }
960 }
961 fputs(message, stderr);
962 (void)fflush(stderr);
963 if (e_fp)
964 (void)UNLINK(e_tmpname);
748a9306
LW		 965 statusvalue = SHIFTSTATUS(statusvalue);
966#ifdef VMS
967 my_exit((U32)vaxc$errno?vaxc$errno:errno?errno:statusvalue?statusvalue:SS$_ABORT);
968#else
a0d0e21e 969 my_exit((I32)((errno&255)?errno:((statusvalue&255)?statusvalue:255)));
748a9306 970#endif
a0d0e21e
LW		 971 return 0;
972}
973
974PP(pp_xor)
975{
976 dSP; dPOPTOPssrl;
977 if (SvTRUE(left) != SvTRUE(right))
978 RETSETYES;
979 else
980 RETSETNO;
981}
982
983PP(pp_andassign)
984{
985 dSP;
986 if (!SvTRUE(TOPs))
987 RETURN;
988 else
989 RETURNOP(cLOGOP->op_other);
990}
991
992PP(pp_orassign)
993{
994 dSP;
995 if (SvTRUE(TOPs))
996 RETURN;
997 else
998 RETURNOP(cLOGOP->op_other);
999}
1000
1001#ifdef DEPRECATED
1002PP(pp_entersubr)
1003{
1004 dSP;
1005 SV** mark = (stack_base + *markstack_ptr + 1);
1006 SV* cv = *mark;
1007 while (mark < sp) { /* emulate old interface */
1008 *mark = mark[1];
1009 mark++;
1010 }
1011 *sp = cv;
1012 return pp_entersub();
1013}
1014#endif
1015
1016PP(pp_caller)
1017{
1018 dSP;
1019 register I32 cxix = dopoptosub(cxstack_ix);
1020 register CONTEXT *cx;
1021 I32 dbcxix;
1022 SV *sv;
1023 I32 count = 0;
1024
1025 if (MAXARG)
1026 count = POPi;
1027 EXTEND(SP, 6);
1028 for (;;) {
1029 if (cxix < 0) {
1030 if (GIMME != G_ARRAY)
1031 RETPUSHUNDEF;
1032 RETURN;
1033 }
1034 if (DBsub && cxix >= 0 &&
1035 cxstack[cxix].blk_sub.cv == GvCV(DBsub))
1036 count++;
1037 if (!count--)
1038 break;
1039 cxix = dopoptosub(cxix - 1);
1040 }
1041 cx = &cxstack[cxix];
1042 if (GIMME != G_ARRAY) {
1043 dTARGET;
1044
1045 sv_setpv(TARG, HvNAME(cx->blk_oldcop->cop_stash));
1046 PUSHs(TARG);
1047 RETURN;
1048 }
1049 dbcxix = dopoptosub(cxix - 1);
1050 if (DBsub && dbcxix >= 0 && cxstack[dbcxix].blk_sub.cv == GvCV(DBsub))
1051 cx = &cxstack[dbcxix];
1052
1053 PUSHs(sv_2mortal(newSVpv(HvNAME(cx->blk_oldcop->cop_stash), 0)));
1054 PUSHs(sv_2mortal(newSVpv(SvPVX(GvSV(cx->blk_oldcop->cop_filegv)), 0)));
1055 PUSHs(sv_2mortal(newSViv((I32)cx->blk_oldcop->cop_line)));
1056 if (!MAXARG)
1057 RETURN;
1058 if (cx->cx_type == CXt_SUB) {
1059 sv = NEWSV(49, 0);
1060 gv_efullname(sv, CvGV(cxstack[cxix].blk_sub.cv));
1061 PUSHs(sv_2mortal(sv));
1062 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1063 }
1064 else {
1065 PUSHs(sv_2mortal(newSVpv("(eval)",0)));
1066 PUSHs(sv_2mortal(newSViv(0)));
1067 }
1068 PUSHs(sv_2mortal(newSViv((I32)cx->blk_gimme)));
748a9306
LW		 1069 if (cx->cx_type == CXt_EVAL && cx->blk_eval.old_op_type == OP_ENTEREVAL)
1070 PUSHs(cx->blk_eval.cur_text);
1071
a0d0e21e
LW		 1072 if (cx->blk_sub.hasargs && curcop->cop_stash == debstash) {
1073 AV *ary = cx->blk_sub.argarray;
1074 int off = AvARRAY(ary) - AvALLOC(ary);
1075
1076 if (!dbargs) {
1077 GV* tmpgv;
1078 dbargs = GvAV(gv_AVadd(tmpgv = gv_fetchpv("DB::args", TRUE,
1079 SVt_PVAV)));
1080 SvMULTI_on(tmpgv);
1081 AvREAL_off(dbargs); /* XXX Should be REIFY */
1082 }
1083
1084 if (AvMAX(dbargs) < AvFILL(ary) + off)
1085 av_extend(dbargs, AvFILL(ary) + off);
1086 Copy(AvALLOC(ary), AvARRAY(dbargs), AvFILL(ary) + 1 + off, SV*);
1087 AvFILL(dbargs) = AvFILL(ary) + off;
1088 }
1089 RETURN;
1090}
1091
1092static int
1093sortcv(a, b)
1094const void *a;
1095const void *b;
1096{
1097 SV **str1 = (SV **) a;
1098 SV **str2 = (SV **) b;
748a9306 1099 I32 oldsaveix = savestack_ix;
a0d0e21e
LW		 1100 I32 oldscopeix = scopestack_ix;
1101 I32 result;
1102 GvSV(firstgv) = *str1;
1103 GvSV(secondgv) = *str2;
1104 stack_sp = stack_base;
1105 op = sortcop;
1106 run();
1107 if (stack_sp != stack_base + 1)
1108 croak("Sort subroutine didn't return single value");
748a9306 1109 if (!SvNIOKp(*stack_sp))
a0d0e21e
LW		 1110 croak("Sort subroutine didn't return a numeric value");
1111 result = SvIV(*stack_sp);
1112 while (scopestack_ix > oldscopeix) {
1113 LEAVE;
1114 }
748a9306 1115 leave_scope(oldsaveix);
a0d0e21e
LW		 1116 return result;
1117}
1118
1119static int
1120sortcmp(a, b)
1121const void *a;
1122const void *b;
1123{
1124 register SV *str1 = *(SV **) a;
1125 register SV *str2 = *(SV **) b;
1126 I32 retval;
1127
1128 if (SvCUR(str1) < SvCUR(str2)) {
1129 /*SUPPRESS 560*/
1130 if (retval = memcmp(SvPVX(str1), SvPVX(str2), SvCUR(str1)))
1131 return retval;
1132 else
1133 return -1;
1134 }
1135 /*SUPPRESS 560*/
1136 else if (retval = memcmp(SvPVX(str1), SvPVX(str2), SvCUR(str2)))
1137 return retval;
1138 else if (SvCUR(str1) == SvCUR(str2))
1139 return 0;
1140 else
1141 return 1;
1142}
1143
1144PP(pp_reset)
1145{
1146 dSP;
1147 char *tmps;
1148
1149 if (MAXARG < 1)
1150 tmps = "";
1151 else
1152 tmps = POPp;
1153 sv_reset(tmps, curcop->cop_stash);
1154 PUSHs(&sv_yes);
1155 RETURN;
1156}
1157
1158PP(pp_lineseq)
1159{
1160 return NORMAL;
1161}
1162
1163PP(pp_dbstate)
1164{
1165 curcop = (COP*)op;
1166 TAINT_NOT; /* Each statement is presumed innocent */
1167 stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
1168 FREETMPS;
1169
1170 if (op->op_private || SvIV(DBsingle) || SvIV(DBsignal) || SvIV(DBtrace))
1171 {
1172 SV **sp;
1173 register CV *cv;
1174 register CONTEXT *cx;
748a9306 1175 I32 gimme = G_ARRAY;
a0d0e21e
LW		 1176 I32 hasargs;
1177 GV *gv;
1178
1179 ENTER;
1180 SAVETMPS;
1181
a0d0e21e
LW		 1182 gv = DBgv;
1183 cv = GvCV(gv);
a0d0e21e
LW		 1184 if (!cv)
1185 DIE("No DB::DB routine defined");
1186
1187 if (CvDEPTH(cv) >= 1) /* don't do recursive DB::DB call */
1188 return NORMAL;
748a9306
LW		 1189
1190 SAVEI32(debug);
1191 SAVESPTR(stack_sp);
1192 debug = 0;
1193 hasargs = 0;
1194 sp = stack_sp;
1195
a0d0e21e 1196 push_return(op->op_next);
748a9306 1197 PUSHBLOCK(cx, CXt_SUB, sp);
a0d0e21e
LW		 1198 PUSHSUB(cx);
1199 CvDEPTH(cv)++;
1200 (void)SvREFCNT_inc(cv);
1201 SAVESPTR(curpad);
1202 curpad = AvARRAY((AV*)*av_fetch(CvPADLIST(cv),1,FALSE));
1203 RETURNOP(CvSTART(cv));
1204 }
1205 else
1206 return NORMAL;
1207}
1208
1209PP(pp_scope)
1210{
1211 return NORMAL;
1212}
1213
1214PP(pp_enteriter)
1215{
1216 dSP; dMARK;
1217 register CONTEXT *cx;
1218 I32 gimme = GIMME;
1219 SV **svp;
1220
1221 if (op->op_targ)
1222 svp = &curpad[op->op_targ]; /* "my" variable */
1223 else
1224 svp = &GvSV((GV*)POPs); /* symbol table variable */
1225
1226 ENTER;
1227 SAVETMPS;
1228 ENTER;
1229
1230 PUSHBLOCK(cx, CXt_LOOP, SP);
1231 PUSHLOOP(cx, svp, MARK);
1232 cx->blk_loop.iterary = stack;
1233 cx->blk_loop.iterix = MARK - stack_base;
1234
1235 RETURN;
1236}
1237
1238PP(pp_enterloop)
1239{
1240 dSP;
1241 register CONTEXT *cx;
1242 I32 gimme = GIMME;
1243
1244 ENTER;
1245 SAVETMPS;
1246 ENTER;
1247
1248 PUSHBLOCK(cx, CXt_LOOP, SP);
1249 PUSHLOOP(cx, 0, SP);
1250
1251 RETURN;
1252}
1253
1254PP(pp_leaveloop)
1255{
1256 dSP;
1257 register CONTEXT *cx;
1258 I32 gimme;
1259 SV **newsp;
1260 PMOP *newpm;
1261 SV **mark;
1262
1263 POPBLOCK(cx,newpm);
1264 mark = newsp;
1265 POPLOOP(cx);
1266 if (gimme == G_SCALAR) {
1267 if (op->op_private & OPpLEAVE_VOID)
1268 ;
1269 else {
1270 if (mark < SP)
1271 *++newsp = sv_mortalcopy(*SP);
1272 else
1273 *++newsp = &sv_undef;
1274 }
1275 }
1276 else {
1277 while (mark < SP)
1278 *++newsp = sv_mortalcopy(*++mark);
1279 }
1280 curpm = newpm; /* Don't pop $1 et al till now */
1281 sp = newsp;
1282 LEAVE;
1283 LEAVE;
1284
1285 RETURN;
1286}
1287
1288PP(pp_return)
1289{
1290 dSP; dMARK;
1291 I32 cxix;
1292 register CONTEXT *cx;
1293 I32 gimme;
1294 SV **newsp;
1295 PMOP *newpm;
1296 I32 optype = 0;
1297
1298 if (stack == sortstack) {
1299 if (cxstack_ix == sortcxix || dopoptosub(cxstack_ix) < sortcxix) {
1300 AvARRAY(stack)[1] = *SP;
1301 stack_sp = stack_base + 1;
1302 return 0;
1303 }
1304 }
1305
1306 cxix = dopoptosub(cxstack_ix);
1307 if (cxix < 0)
1308 DIE("Can't return outside a subroutine");
1309 if (cxix < cxstack_ix)
1310 dounwind(cxix);
1311
1312 POPBLOCK(cx,newpm);
1313 switch (cx->cx_type) {
1314 case CXt_SUB:
1315 POPSUB(cx);
1316 break;
1317 case CXt_EVAL:
1318 POPEVAL(cx);
748a9306
LW		 1319 if (optype == OP_REQUIRE &&
1320 (MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) )
1321 {
1322 char *name = cx->blk_eval.old_name;
1323 (void)hv_delete(GvHVn(incgv), name, strlen(name), G_DISCARD);
1324 DIE("%s did not return a true value", name);
1325 }
a0d0e21e
LW		 1326 break;
1327 default:
1328 DIE("panic: return");
1329 break;
1330 }
1331
1332 if (gimme == G_SCALAR) {
1333 if (MARK < SP)
1334 *++newsp = sv_mortalcopy(*SP);
1335 else
1336 *++newsp = &sv_undef;
a0d0e21e
LW		 1337 }
1338 else {
a0d0e21e
LW		 1339 while (MARK < SP)
1340 *++newsp = sv_mortalcopy(*++MARK);
1341 }
1342 curpm = newpm; /* Don't pop $1 et al till now */
1343 stack_sp = newsp;
1344
1345 LEAVE;
1346 return pop_return();
1347}
1348
1349PP(pp_last)
1350{
1351 dSP;
1352 I32 cxix;
1353 register CONTEXT *cx;
1354 I32 gimme;
1355 I32 optype;
1356 OP *nextop;
1357 SV **newsp;
1358 PMOP *newpm;
1359 SV **mark = stack_base + cxstack[cxstack_ix].blk_oldsp;
a0d0e21e
LW		 1360
1361 if (op->op_flags & OPf_SPECIAL) {
1362 cxix = dopoptoloop(cxstack_ix);
1363 if (cxix < 0)
1364 DIE("Can't \"last\" outside a block");
1365 }
1366 else {
1367 cxix = dopoptolabel(cPVOP->op_pv);
1368 if (cxix < 0)
1369 DIE("Label not found for \"last %s\"", cPVOP->op_pv);
1370 }
1371 if (cxix < cxstack_ix)
1372 dounwind(cxix);
1373
1374 POPBLOCK(cx,newpm);
1375 switch (cx->cx_type) {
1376 case CXt_LOOP:
1377 POPLOOP(cx);
1378 nextop = cx->blk_loop.last_op->op_next;
1379 LEAVE;
1380 break;
1381 case CXt_EVAL:
1382 POPEVAL(cx);
1383 nextop = pop_return();
1384 break;
1385 case CXt_SUB:
1386 POPSUB(cx);
1387 nextop = pop_return();
1388 break;
1389 default:
1390 DIE("panic: last");
1391 break;
1392 }
1393
1394 if (gimme == G_SCALAR) {
1395 if (mark < SP)
1396 *++newsp = sv_mortalcopy(*SP);
1397 else
1398 *++newsp = &sv_undef;
1399 }
1400 else {
1401 while (mark < SP)
1402 *++newsp = sv_mortalcopy(*++mark);
1403 }
1404 curpm = newpm; /* Don't pop $1 et al till now */
1405 sp = newsp;
1406
1407 LEAVE;
1408 RETURNOP(nextop);
1409}
1410
1411PP(pp_next)
1412{
1413 I32 cxix;
1414 register CONTEXT *cx;
1415 I32 oldsave;
1416
1417 if (op->op_flags & OPf_SPECIAL) {
1418 cxix = dopoptoloop(cxstack_ix);
1419 if (cxix < 0)
1420 DIE("Can't \"next\" outside a block");
1421 }
1422 else {
1423 cxix = dopoptolabel(cPVOP->op_pv);
1424 if (cxix < 0)
1425 DIE("Label not found for \"next %s\"", cPVOP->op_pv);
1426 }
1427 if (cxix < cxstack_ix)
1428 dounwind(cxix);
1429
1430 TOPBLOCK(cx);
1431 oldsave = scopestack[scopestack_ix - 1];
1432 LEAVE_SCOPE(oldsave);
1433 return cx->blk_loop.next_op;
1434}
1435
1436PP(pp_redo)
1437{
1438 I32 cxix;
1439 register CONTEXT *cx;
1440 I32 oldsave;
1441
1442 if (op->op_flags & OPf_SPECIAL) {
1443 cxix = dopoptoloop(cxstack_ix);
1444 if (cxix < 0)
1445 DIE("Can't \"redo\" outside a block");
1446 }
1447 else {
1448 cxix = dopoptolabel(cPVOP->op_pv);
1449 if (cxix < 0)
1450 DIE("Label not found for \"redo %s\"", cPVOP->op_pv);
1451 }
1452 if (cxix < cxstack_ix)
1453 dounwind(cxix);
1454
1455 TOPBLOCK(cx);
1456 oldsave = scopestack[scopestack_ix - 1];
1457 LEAVE_SCOPE(oldsave);
1458 return cx->blk_loop.redo_op;
1459}
1460
1461static OP* lastgotoprobe;
1462
1463static OP *
1464dofindlabel(op,label,opstack)
1465OP *op;
1466char *label;
1467OP **opstack;
1468{
1469 OP *kid;
1470 OP **ops = opstack;
1471
1472 if (op->op_type == OP_LEAVE ||
1473 op->op_type == OP_SCOPE ||
1474 op->op_type == OP_LEAVELOOP ||
1475 op->op_type == OP_LEAVETRY)
1476 *ops++ = cUNOP->op_first;
1477 *ops = 0;
1478 if (op->op_flags & OPf_KIDS) {
1479 /* First try all the kids at this level, since that's likeliest. */
1480 for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) {
1481 if ((kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) &&
1482 kCOP->cop_label && strEQ(kCOP->cop_label, label))
1483 return kid;
1484 }
1485 for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) {
1486 if (kid == lastgotoprobe)
1487 continue;
1488 if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) {
1489 if (ops > opstack &&
1490 (ops[-1]->op_type == OP_NEXTSTATE ||
1491 ops[-1]->op_type == OP_DBSTATE))
1492 *ops = kid;
1493 else
1494 *ops++ = kid;
1495 }
1496 if (op = dofindlabel(kid,label,ops))
1497 return op;
1498 }
1499 }
1500 *ops = 0;
1501 return 0;
1502}
1503
1504PP(pp_dump)
1505{
1506 return pp_goto(ARGS);
1507 /*NOTREACHED*/
1508}
1509
1510PP(pp_goto)
1511{
1512 dSP;
1513 OP *retop = 0;
1514 I32 ix;
1515 register CONTEXT *cx;
1516 OP *enterops[64];
1517 char *label;
1518 int do_dump = (op->op_type == OP_DUMP);
1519
1520 label = 0;
1521 if (op->op_flags & OPf_STACKED) {
1522 SV *sv = POPs;
1523
1524 /* This egregious kludge implements goto &subroutine */
1525 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) {
1526 I32 cxix;
1527 register CONTEXT *cx;
1528 CV* cv = (CV*)SvRV(sv);
1529 SV** mark;
1530 I32 items = 0;
1531 I32 oldsave;
1532
1533 /* First do some returnish stuff. */
1534 cxix = dopoptosub(cxstack_ix);
1535 if (cxix < 0)
1536 DIE("Can't goto subroutine outside a subroutine");
1537 if (cxix < cxstack_ix)
1538 dounwind(cxix);
1539 TOPBLOCK(cx);
1540 mark = stack_sp;
1541 if (cx->blk_sub.hasargs) { /* put @_ back onto stack */
1542 AV* av = cx->blk_sub.argarray;
1543
1544 items = AvFILL(av) + 1;
1545 Copy(AvARRAY(av), ++stack_sp, items, SV*);
1546 stack_sp += items;
1547 GvAV(defgv) = cx->blk_sub.savearray;
1548 av_clear(av);
1549 AvREAL_off(av);
1550 }
1551 if (!(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth))
1552 SvREFCNT_dec(cx->blk_sub.cv);
1553 oldsave = scopestack[scopestack_ix - 1];
1554 LEAVE_SCOPE(oldsave);
1555
1556 /* Now do some callish stuff. */
1557 SAVETMPS;
1558 if (CvXSUB(cv)) {
1559 if (CvOLDSTYLE(cv)) {
ecfc5424 1560 I32 (*fp3)_((int,int,int));
a0d0e21e
LW		 1561 while (sp > mark) {
1562 sp[1] = sp[0];
1563 sp--;
1564 }
ecfc5424
AD		 1565 fp3 = (I32(*)_((int,int,int)))CvXSUB(cv);
1566 items = (*fp3)(CvXSUBANY(cv).any_i32,
1567 mark - stack_base + 1,
1568 items);
a0d0e21e
LW		 1569 sp = stack_base + items;
1570 }
1571 else {
1572 (void)(*CvXSUB(cv))(cv);
1573 }
1574 LEAVE;
1575 return pop_return();
1576 }
1577 else {
1578 AV* padlist = CvPADLIST(cv);
1579 SV** svp = AvARRAY(padlist);
1580 cx->blk_sub.cv = cv;
1581 cx->blk_sub.olddepth = CvDEPTH(cv);
1582 CvDEPTH(cv)++;
1583 if (CvDEPTH(cv) < 2)
1584 (void)SvREFCNT_inc(cv);
1585 else { /* save temporaries on recursion? */
1586 if (CvDEPTH(cv) == 100 && dowarn)
1587 warn("Deep recursion on subroutine \"%s\"",
1588 GvENAME(CvGV(cv)));
1589 if (CvDEPTH(cv) > AvFILL(padlist)) {
1590 AV *newpad = newAV();
748a9306 1591 AV *oldpad = (AV*)AvARRAY(svp[CvDEPTH(cv)-1]);
a0d0e21e
LW		 1592 I32 ix = AvFILL((AV*)svp[1]);
1593 svp = AvARRAY(svp[0]);
748a9306 1594 for ( ;ix > 0; ix--) {
a0d0e21e 1595 if (svp[ix] != &sv_undef) {
748a9306
LW		 1596 char *name = SvPVX(svp[ix]);
1597 if (SvFLAGS(svp[ix]) & SVf_FAKE) {
1598 /* outer lexical? */
1599 av_store(newpad, ix,
1600 SvREFCNT_inc(AvARRAY(oldpad)[ix]) );
1601 }
1602 else { /* our own lexical */
1603 if (*name == '@')
1604 av_store(newpad, ix, sv = (SV*)newAV());
1605 else if (*name == '%')
1606 av_store(newpad, ix, sv = (SV*)newHV());
1607 else
1608 av_store(newpad, ix, sv = NEWSV(0,0));
1609 SvPADMY_on(sv);
1610 }
a0d0e21e
LW		 1611 }
1612 else {
748a9306 1613 av_store(newpad, ix, sv = NEWSV(0,0));
a0d0e21e
LW		 1614 SvPADTMP_on(sv);
1615 }
1616 }
1617 if (cx->blk_sub.hasargs) {
1618 AV* av = newAV();
1619 av_extend(av, 0);
1620 av_store(newpad, 0, (SV*)av);
1621 AvFLAGS(av) = AVf_REIFY;
1622 }
1623 av_store(padlist, CvDEPTH(cv), (SV*)newpad);
1624 AvFILL(padlist) = CvDEPTH(cv);
1625 svp = AvARRAY(padlist);
1626 }
1627 }
1628 SAVESPTR(curpad);
1629 curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
1630 if (cx->blk_sub.hasargs) {
1631 AV* av = (AV*)curpad[0];
1632 SV** ary;
1633
1634 cx->blk_sub.savearray = GvAV(defgv);
1635 cx->blk_sub.argarray = av;
1636 GvAV(defgv) = cx->blk_sub.argarray;
1637 ++mark;
1638
1639 if (items >= AvMAX(av) + 1) {
1640 ary = AvALLOC(av);
1641 if (AvARRAY(av) != ary) {
1642 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
1643 SvPVX(av) = (char*)ary;
1644 }
1645 if (items >= AvMAX(av) + 1) {
1646 AvMAX(av) = items - 1;
1647 Renew(ary,items+1,SV*);
1648 AvALLOC(av) = ary;
1649 SvPVX(av) = (char*)ary;
1650 }
1651 }
1652 Copy(mark,AvARRAY(av),items,SV*);
1653 AvFILL(av) = items - 1;
1654
1655 while (items--) {
1656 if (*mark)
1657 SvTEMP_off(*mark);
1658 mark++;
1659 }
1660 }
1661 RETURNOP(CvSTART(cv));
1662 }
1663 }
1664 else
1665 label = SvPV(sv,na);
1666 }
1667 else if (op->op_flags & OPf_SPECIAL) {
1668 if (! do_dump)
1669 DIE("goto must have label");
1670 }
1671 else
1672 label = cPVOP->op_pv;
1673
1674 if (label && *label) {
1675 OP *gotoprobe = 0;
1676
1677 /* find label */
1678
1679 lastgotoprobe = 0;
1680 *enterops = 0;
1681 for (ix = cxstack_ix; ix >= 0; ix--) {
1682 cx = &cxstack[ix];
1683 switch (cx->cx_type) {
1684 case CXt_SUB:
1685 gotoprobe = CvROOT(cx->blk_sub.cv);
1686 break;
1687 case CXt_EVAL:
1688 gotoprobe = eval_root; /* XXX not good for nested eval */
1689 break;
1690 case CXt_LOOP:
1691 gotoprobe = cx->blk_oldcop->op_sibling;
1692 break;
1693 case CXt_SUBST:
1694 continue;
1695 case CXt_BLOCK:
1696 if (ix)
1697 gotoprobe = cx->blk_oldcop->op_sibling;
1698 else
1699 gotoprobe = main_root;
1700 break;
1701 default:
1702 if (ix)
1703 DIE("panic: goto");
1704 else
1705 gotoprobe = main_root;
1706 break;
1707 }
1708 retop = dofindlabel(gotoprobe, label, enterops);
1709 if (retop)
1710 break;
1711 lastgotoprobe = gotoprobe;
1712 }
1713 if (!retop)
1714 DIE("Can't find label %s", label);
1715
1716 /* pop unwanted frames */
1717
1718 if (ix < cxstack_ix) {
1719 I32 oldsave;
1720
1721 if (ix < 0)
1722 ix = 0;
1723 dounwind(ix);
1724 TOPBLOCK(cx);
1725 oldsave = scopestack[scopestack_ix];
1726 LEAVE_SCOPE(oldsave);
1727 }
1728
1729 /* push wanted frames */
1730
748a9306 1731 if (*enterops && enterops[1]) {
a0d0e21e 1732 OP *oldop = op;
748a9306 1733 for (ix = 1; enterops[ix]; ix++) {
a0d0e21e
LW		 1734 op = enterops[ix];
1735 (*op->op_ppaddr)();
1736 }
1737 op = oldop;
1738 }
1739 }
1740
1741 if (do_dump) {
1742 restartop = retop;
1743 do_undump = TRUE;
1744
1745 my_unexec();
1746
1747 restartop = 0; /* hmm, must be GNU unexec().. */
1748 do_undump = FALSE;
1749 }
1750
748a9306
LW		 1751 if (stack == signalstack) {
1752 restartop = retop;
1753 longjmp(top_env, 3);
1754 }
1755
a0d0e21e
LW		 1756 RETURNOP(retop);
1757}
1758
1759PP(pp_exit)
1760{
1761 dSP;
1762 I32 anum;
1763
1764 if (MAXARG < 1)
1765 anum = 0;
1766 else
1767 anum = SvIVx(POPs);
1768 my_exit(anum);
1769 PUSHs(&sv_undef);
1770 RETURN;
1771}
1772
1773#ifdef NOTYET
1774PP(pp_nswitch)
1775{
1776 dSP;
1777 double value = SvNVx(GvSV(cCOP->cop_gv));
1778 register I32 match = I_32(value);
1779
1780 if (value < 0.0) {
1781 if (((double)match) > value)
1782 --match; /* was fractional--truncate other way */
1783 }
1784 match -= cCOP->uop.scop.scop_offset;
1785 if (match < 0)
1786 match = 0;
1787 else if (match > cCOP->uop.scop.scop_max)
1788 match = cCOP->uop.scop.scop_max;
1789 op = cCOP->uop.scop.scop_next[match];
1790 RETURNOP(op);
1791}
1792
1793PP(pp_cswitch)
1794{
1795 dSP;
1796 register I32 match;
1797
1798 if (multiline)
1799 op = op->op_next; /* can't assume anything */
1800 else {
1801 match = *(SvPVx(GvSV(cCOP->cop_gv), na)) & 255;
1802 match -= cCOP->uop.scop.scop_offset;
1803 if (match < 0)
1804 match = 0;
1805 else if (match > cCOP->uop.scop.scop_max)
1806 match = cCOP->uop.scop.scop_max;
1807 op = cCOP->uop.scop.scop_next[match];
1808 }
1809 RETURNOP(op);
1810}
1811#endif
1812
1813/* Eval. */
1814
1815static void
1816save_lines(array, sv)
1817AV *array;
1818SV *sv;
1819{
1820 register char *s = SvPVX(sv);
1821 register char *send = SvPVX(sv) + SvCUR(sv);
1822 register char *t;
1823 register I32 line = 1;
1824
1825 while (s && s < send) {
1826 SV *tmpstr = NEWSV(85,0);
1827
1828 sv_upgrade(tmpstr, SVt_PVMG);
1829 t = strchr(s, '\n');
1830 if (t)
1831 t++;
1832 else
1833 t = send;
1834
1835 sv_setpvn(tmpstr, s, t - s);
1836 av_store(array, line++, tmpstr);
1837 s = t;
1838 }
1839}
1840
1841static OP *
1842doeval(gimme)
1843int gimme;
1844{
1845 dSP;
1846 OP *saveop = op;
1847 HV *newstash;
748a9306 1848 AV* comppadlist;
a0d0e21e
LW		 1849
1850 in_eval = 1;
1851
1852 /* set up a scratch pad */
1853
1854 SAVEINT(padix);
1855 SAVESPTR(curpad);
1856 SAVESPTR(comppad);
1857 SAVESPTR(comppad_name);
1858 SAVEINT(comppad_name_fill);
1859 SAVEINT(min_intro_pending);
1860 SAVEINT(max_intro_pending);
748a9306
LW		 1861
1862 SAVESPTR(compcv);
1863 compcv = (CV*)NEWSV(1104,0);
1864 sv_upgrade((SV *)compcv, SVt_PVCV);
1865
a0d0e21e
LW		 1866 comppad = newAV();
1867 comppad_name = newAV();
1868 comppad_name_fill = 0;
1869 min_intro_pending = 0;
1870 av_push(comppad, Nullsv);
1871 curpad = AvARRAY(comppad);
1872 padix = 0;
1873
748a9306
LW		 1874 comppadlist = newAV();
1875 AvREAL_off(comppadlist);
1876 av_store(comppadlist, 0, SvREFCNT_inc((SV*)comppad_name));
1877 av_store(comppadlist, 1, SvREFCNT_inc((SV*)comppad));
1878 CvPADLIST(compcv) = comppadlist;
1879
a0d0e21e
LW		 1880 /* make sure we compile in the right package */
1881
1882 newstash = curcop->cop_stash;
1883 if (curstash != newstash) {
1884 SAVESPTR(curstash);
1885 curstash = newstash;
1886 }
1887 SAVESPTR(beginav);
1888 beginav = newAV();
1889 SAVEFREESV(beginav);
1890
1891 /* try to compile it */
1892
1893 eval_root = Nullop;
1894 error_count = 0;
1895 curcop = &compiling;
1896 curcop->cop_arybase = 0;
1897 rs = "\n";
1898 rslen = 1;
1899 rschar = '\n';
1900 rspara = 0;
1901 sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
1902 if (yyparse() || error_count || !eval_root) {
1903 SV **newsp;
1904 I32 gimme;
1905 CONTEXT *cx;
1906 I32 optype;
1907
1908 op = saveop;
1909 if (eval_root) {
1910 op_free(eval_root);
1911 eval_root = Nullop;
1912 }
1913 POPBLOCK(cx,curpm);
1914 POPEVAL(cx);
1915 pop_return();
1916 lex_end();
1917 LEAVE;
1918 if (optype == OP_REQUIRE)
1919 DIE("%s", SvPVx(GvSV(gv_fetchpv("@",TRUE, SVt_PV)), na));
1920 rs = nrs;
1921 rslen = nrslen;
1922 rschar = nrschar;
1923 rspara = (nrslen == 2);
1924 RETPUSHUNDEF;
1925 }
1926 rs = nrs;
1927 rslen = nrslen;
1928 rschar = nrschar;
1929 rspara = (nrslen == 2);
1930 compiling.cop_line = 0;
748a9306 1931 SAVEFREESV(compcv);
a0d0e21e
LW		 1932 SAVEFREEOP(eval_root);
1933 if (gimme & G_ARRAY)
1934 list(eval_root);
1935 else
1936 scalar(eval_root);
1937
1938 DEBUG_x(dump_eval());
1939
1940 /* compiled okay, so do it */
1941
1942 RETURNOP(eval_start);
1943}
1944
1945PP(pp_require)
1946{
1947 dSP;
1948 register CONTEXT *cx;
1949 SV *sv;
1950 char *name;
1951 char *tmpname;
1952 SV** svp;
1953 I32 gimme = G_SCALAR;
1954 FILE *tryrsfp = 0;
1955
1956 sv = POPs;
1957 if (SvNIOK(sv) && !SvPOKp(sv)) {
1958 if (atof(patchlevel) + 0.000999 < SvNV(sv))
1959 DIE("Perl %3.3f required--this is only version %s, stopped",
1960 SvNV(sv),patchlevel);
1961 RETPUSHYES;
1962 }
1963 name = SvPV(sv, na);
1964 if (!*name)
1965 DIE("Null filename used");
1966 if (op->op_type == OP_REQUIRE &&
1967 (svp = hv_fetch(GvHVn(incgv), name, SvCUR(sv), 0)) &&
1968 *svp != &sv_undef)
1969 RETPUSHYES;
1970
1971 /* prepare to compile file */
1972
1973 tmpname = savepv(name);
1974 if (*tmpname == '/' ||
1975 (*tmpname == '.' &&
1976 (tmpname[1] == '/' ||
748a9306
LW		 1977 (tmpname[1] == '.' && tmpname[2] == '/')))
1978#ifdef VMS
1979 || ((*tmpname == '[' || *tmpname == '<') &&
1980 (tmpname[1] == '-' || tmpname[1] == ']' || tmpname[1] == '>'))
1981#endif
1982 )
a0d0e21e
LW		 1983 {
1984 tryrsfp = fopen(tmpname,"r");
1985 }
1986 else {
1987 AV *ar = GvAVn(incgv);
1988 I32 i;
1989
1990 for (i = 0; i <= AvFILL(ar); i++) {
748a9306
LW		 1991#ifdef VMS
1992 if (tounixpath_ts(SvPVx(*av_fetch(ar, i, TRUE), na),buf) == NULL)
1993 croak("Error converting file specification %s",
1994 SvPVx(*av_fetch(ar, i, TRUE), na));
1995 strcat(buf,name);
1996#else
a0d0e21e
LW		 1997 (void)sprintf(buf, "%s/%s",
1998 SvPVx(*av_fetch(ar, i, TRUE), na), name);
748a9306 1999#endif
a0d0e21e
LW		 2000 tryrsfp = fopen(buf, "r");
2001 if (tryrsfp) {
2002 char *s = buf;
2003
2004 if (*s == '.' && s[1] == '/')
2005 s += 2;
2006 Safefree(tmpname);
2007 tmpname = savepv(s);
2008 break;
2009 }
2010 }
2011 }
2012 SAVESPTR(compiling.cop_filegv);
2013 compiling.cop_filegv = gv_fetchfile(tmpname);
2014 Safefree(tmpname);
2015 tmpname = Nullch;
2016 if (!tryrsfp) {
2017 if (op->op_type == OP_REQUIRE) {
2018 sprintf(tokenbuf,"Can't locate %s in @INC", name);
2019 if (instr(tokenbuf,".h "))
2020 strcat(tokenbuf," (change .h to .ph maybe?)");
2021 if (instr(tokenbuf,".ph "))
2022 strcat(tokenbuf," (did you run h2ph?)");
2023 DIE("%s",tokenbuf);
2024 }
2025
2026 RETPUSHUNDEF;
2027 }
2028
2029 /* Assume success here to prevent recursive requirement. */
2030 (void)hv_store(GvHVn(incgv), name, strlen(name),
2031 newSVsv(GvSV(compiling.cop_filegv)), 0 );
2032
2033 ENTER;
2034 SAVETMPS;
2035 lex_start(sv_2mortal(newSVpv("",0)));
2036 rsfp = tryrsfp;
2037 name = savepv(name);
2038 SAVEFREEPV(name);
2039 SAVEI32(hints);
2040 hints = 0;
2041
2042 /* switch to eval mode */
2043
2044 push_return(op->op_next);
2045 PUSHBLOCK(cx, CXt_EVAL, SP);
2046 PUSHEVAL(cx, name, compiling.cop_filegv);
2047
2048 compiling.cop_line = 0;
2049
2050 PUTBACK;
2051 return doeval(G_SCALAR);
2052}
2053
2054PP(pp_dofile)
2055{
2056 return pp_require(ARGS);
2057}
2058
2059PP(pp_entereval)
2060{
2061 dSP;
2062 register CONTEXT *cx;
2063 dPOPss;
2064 I32 gimme = GIMME;
2065 char tmpbuf[32];
2066 STRLEN len;
2067
2068 if (!SvPV(sv,len) || !len)
2069 RETPUSHUNDEF;
748a9306 2070 TAINT_PROPER("eval");
a0d0e21e
LW		 2071
2072 ENTER;
a0d0e21e 2073 lex_start(sv);
748a9306 2074 SAVETMPS;
a0d0e21e
LW		 2075
2076 /* switch to eval mode */
2077
748a9306 2078 SAVESPTR(compiling.cop_filegv);
a0d0e21e
LW		 2079 sprintf(tmpbuf, "_<(eval %d)", ++evalseq);
2080 compiling.cop_filegv = gv_fetchfile(tmpbuf+2);
2081 compiling.cop_line = 1;
2082 SAVEDELETE(defstash, savepv(tmpbuf), strlen(tmpbuf));
2083 SAVEI32(hints);
2084 hints = op->op_targ;
2085
2086 push_return(op->op_next);
2087 PUSHBLOCK(cx, CXt_EVAL, SP);
2088 PUSHEVAL(cx, 0, compiling.cop_filegv);
2089
2090 /* prepare to compile string */
2091
2092 if (perldb && curstash != debstash)
2093 save_lines(GvAV(compiling.cop_filegv), linestr);
2094 PUTBACK;
2095 return doeval(gimme);
2096}
2097
2098PP(pp_leaveeval)
2099{
2100 dSP;
2101 register SV **mark;
2102 SV **newsp;
2103 PMOP *newpm;
2104 I32 gimme;
2105 register CONTEXT *cx;
2106 OP *retop;
2107 I32 optype;
2108
2109 POPBLOCK(cx,newpm);
2110 POPEVAL(cx);
2111 retop = pop_return();
2112
2113 if (gimme == G_SCALAR) {
2114 if (op->op_private & OPpLEAVE_VOID)
2115 MARK = newsp;
2116 else {
2117 MARK = newsp + 1;
2118 if (MARK <= SP) {
2119 if (SvFLAGS(TOPs) & SVs_TEMP)
2120 *MARK = TOPs;
2121 else
2122 *MARK = sv_mortalcopy(TOPs);
2123 }
2124 else {
2125 MEXTEND(mark,0);
2126 *MARK = &sv_undef;
2127 }
2128 }
2129 SP = MARK;
2130 }
2131 else {
2132 for (mark = newsp + 1; mark <= SP; mark++)
2133 if (!(SvFLAGS(TOPs) & SVs_TEMP))
2134 *mark = sv_mortalcopy(*mark);
2135 /* in case LEAVE wipes old return values */
2136 }
2137 curpm = newpm; /* Don't pop $1 et al till now */
2138
2139 if (optype != OP_ENTEREVAL) {
2140 char *name = cx->blk_eval.old_name;
2141
2142 if (!(gimme == G_SCALAR ? SvTRUE(*sp) : sp > newsp)) {
2143 /* Unassume the success we assumed earlier. */
748a9306 2144 (void)hv_delete(GvHVn(incgv), name, strlen(name), G_DISCARD);
a0d0e21e
LW		 2145
2146 if (optype == OP_REQUIRE)
2147 retop = die("%s did not return a true value", name);
2148 }
2149 }
2150
2151 lex_end();
2152 LEAVE;
2153 sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
2154
2155 RETURNOP(retop);
2156}
2157
a0d0e21e
LW		 2158PP(pp_entertry)
2159{
2160 dSP;
2161 register CONTEXT *cx;
2162 I32 gimme = GIMME;
2163
2164 ENTER;
2165 SAVETMPS;
2166
2167 push_return(cLOGOP->op_other->op_next);
2168 PUSHBLOCK(cx, CXt_EVAL, SP);
2169 PUSHEVAL(cx, 0, 0);
2170 eval_root = op; /* Only needed so that goto works right. */
2171
2172 in_eval = 1;
2173 sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
2174 RETURN;
2175}
2176
2177PP(pp_leavetry)
2178{
2179 dSP;
2180 register SV **mark;
2181 SV **newsp;
2182 PMOP *newpm;
2183 I32 gimme;
2184 register CONTEXT *cx;
2185 I32 optype;
2186
2187 POPBLOCK(cx,newpm);
2188 POPEVAL(cx);
2189 pop_return();
2190
2191 if (gimme == G_SCALAR) {
2192 if (op->op_private & OPpLEAVE_VOID)
2193 MARK = newsp;
2194 else {
2195 MARK = newsp + 1;
2196 if (MARK <= SP) {
2197 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
2198 *MARK = TOPs;
2199 else
2200 *MARK = sv_mortalcopy(TOPs);
2201 }
2202 else {
2203 MEXTEND(mark,0);
2204 *MARK = &sv_undef;
2205 }
2206 }
2207 SP = MARK;
2208 }
2209 else {
2210 for (mark = newsp + 1; mark <= SP; mark++)
2211 if (!(SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)))
2212 *mark = sv_mortalcopy(*mark);
2213 /* in case LEAVE wipes old return values */
2214 }
2215 curpm = newpm; /* Don't pop $1 et al till now */
2216
2217 LEAVE;
2218 sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
2219 RETURN;
2220}
2221
2222static void
2223doparseform(sv)
2224SV *sv;
2225{
2226 STRLEN len;
2227 register char *s = SvPV_force(sv, len);
2228 register char *send = s + len;
2229 register char *base;
2230 register I32 skipspaces = 0;
2231 bool noblank;
2232 bool repeat;
2233 bool postspace = FALSE;
2234 U16 *fops;
2235 register U16 *fpc;
2236 U16 *linepc;
2237 register I32 arg;
2238 bool ischop;
2239
2240 New(804, fops, (send - s)*3+2, U16); /* Almost certainly too long... */
2241 fpc = fops;
2242
2243 if (s < send) {
2244 linepc = fpc;
2245 *fpc++ = FF_LINEMARK;
2246 noblank = repeat = FALSE;
2247 base = s;
2248 }
2249
2250 while (s <= send) {
2251 switch (*s++) {
2252 default:
2253 skipspaces = 0;
2254 continue;
2255
2256 case '~':
2257 if (*s == '~') {
2258 repeat = TRUE;
2259 *s = ' ';
2260 }
2261 noblank = TRUE;
2262 s[-1] = ' ';
2263 /* FALL THROUGH */
2264 case ' ': case '\t':
2265 skipspaces++;
2266 continue;
2267
2268 case '\n': case 0:
2269 arg = s - base;
2270 skipspaces++;
2271 arg -= skipspaces;
2272 if (arg) {
2273 if (postspace) {
2274 *fpc++ = FF_SPACE;
2275 postspace = FALSE;
2276 }
2277 *fpc++ = FF_LITERAL;
2278 *fpc++ = arg;
2279 }
2280 if (s <= send)
2281 skipspaces--;
2282 if (skipspaces) {
2283 *fpc++ = FF_SKIP;
2284 *fpc++ = skipspaces;
2285 }
2286 skipspaces = 0;
2287 if (s <= send)
2288 *fpc++ = FF_NEWLINE;
2289 if (noblank) {
2290 *fpc++ = FF_BLANK;
2291 if (repeat)
2292 arg = fpc - linepc + 1;
2293 else
2294 arg = 0;
2295 *fpc++ = arg;
2296 }
2297 if (s < send) {
2298 linepc = fpc;
2299 *fpc++ = FF_LINEMARK;
2300 noblank = repeat = FALSE;
2301 base = s;
2302 }
2303 else
2304 s++;
2305 continue;
2306
2307 case '@':
2308 case '^':
2309 ischop = s[-1] == '^';
2310
2311 if (postspace) {
2312 *fpc++ = FF_SPACE;
2313 postspace = FALSE;
2314 }
2315 arg = (s - base) - 1;
2316 if (arg) {
2317 *fpc++ = FF_LITERAL;
2318 *fpc++ = arg;
2319 }
2320
2321 base = s - 1;
2322 *fpc++ = FF_FETCH;
2323 if (*s == '*') {
2324 s++;
2325 *fpc++ = 0;
2326 *fpc++ = FF_LINEGLOB;
2327 }
2328 else if (*s == '#' || (*s == '.' && s[1] == '#')) {
2329 arg = ischop ? 512 : 0;
2330 base = s - 1;
2331 while (*s == '#')
2332 s++;
2333 if (*s == '.') {
2334 char *f;
2335 s++;
2336 f = s;
2337 while (*s == '#')
2338 s++;
2339 arg |= 256 + (s - f);
2340 }
2341 *fpc++ = s - base; /* fieldsize for FETCH */
2342 *fpc++ = FF_DECIMAL;
2343 *fpc++ = arg;
2344 }
2345 else {
2346 I32 prespace = 0;
2347 bool ismore = FALSE;
2348
2349 if (*s == '>') {
2350 while (*++s == '>') ;
2351 prespace = FF_SPACE;
2352 }
2353 else if (*s == '|') {
2354 while (*++s == '|') ;
2355 prespace = FF_HALFSPACE;
2356 postspace = TRUE;
2357 }
2358 else {
2359 if (*s == '<')
2360 while (*++s == '<') ;
2361 postspace = TRUE;
2362 }
2363 if (*s == '.' && s[1] == '.' && s[2] == '.') {
2364 s += 3;
2365 ismore = TRUE;
2366 }
2367 *fpc++ = s - base; /* fieldsize for FETCH */
2368
2369 *fpc++ = ischop ? FF_CHECKCHOP : FF_CHECKNL;
2370
2371 if (prespace)
2372 *fpc++ = prespace;
2373 *fpc++ = FF_ITEM;
2374 if (ismore)
2375 *fpc++ = FF_MORE;
2376 if (ischop)
2377 *fpc++ = FF_CHOP;
2378 }
2379 base = s;
2380 skipspaces = 0;
2381 continue;
2382 }
2383 }
2384 *fpc++ = FF_END;
2385
2386 arg = fpc - fops;
2387 { /* need to jump to the next word */
2388 int z;
2389 z = WORD_ALIGN - SvCUR(sv) % WORD_ALIGN;
2390 SvGROW(sv, SvCUR(sv) + z + arg * sizeof(U16) + 4);
2391 s = SvPVX(sv) + SvCUR(sv) + z;
2392 }
2393 Copy(fops, s, arg, U16);
2394 Safefree(fops);
2395 SvCOMPILED_on(sv);
2396}
2397
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