1 /* $RCSfile: op.c,v $$Revision: 4.1 $$Date: 92/08/07 17:19:16 $
3 * Copyright (c) 1991, Larry Wall
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.
17 cxstack_max = cxstack_max * 3 / 2;
18 Renew(cxstack, cxstack_max, CONTEXT);
19 return cxstack_ix + 1;
26 if (retstack_ix == retstack_max) {
27 retstack_max = retstack_max * 3 / 2;
28 Renew(retstack, retstack_max, OP*);
30 retstack[retstack_ix++] = retop;
37 return retstack[--retstack_ix];
45 if (scopestack_ix == scopestack_max) {
46 scopestack_max = scopestack_max * 3 / 2;
47 Renew(scopestack, scopestack_max, I32);
49 scopestack[scopestack_ix++] = savestack_ix;
56 I32 oldsave = scopestack[--scopestack_ix];
63 savestack_max = savestack_max * 3 / 2;
64 Renew(savestack, savestack_max, ANY);
70 /* XXX should tmps_floor live in cxstack? */
71 I32 myfloor = tmps_floor;
72 while (tmps_ix > myfloor) { /* clean up after last statement */
73 SV* sv = tmps_stack[tmps_ix];
74 tmps_stack[tmps_ix--] = Nullsv;
79 SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
96 sv = GvSV(gv) = NEWSV(0,0);
97 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv)) {
98 sv_upgrade(sv, SvTYPE(osv));
100 SvFLAGS(osv) |= (SvFLAGS(osv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
101 SvMAGIC(sv) = SvMAGIC(osv);
109 #ifdef INLINED_ELSEWHERE
125 GvSV(gv) = NEWSV(72,0);
126 GvLINE(gv) = curcop->cop_line;
141 SSPUSHINT(SAVEt_SVREF);
143 sv = *sptr = NEWSV(0,0);
144 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(sv)) {
145 sv_upgrade(sv, SvTYPE(osv));
146 SvMAGIC(sv) = SvMAGIC(osv);
160 SSPUSHPTR(GvAVn(gv));
163 GvAV(gv) = Null(AV*);
173 SSPUSHPTR(GvHVn(gv));
176 GvHV(gv) = Null(HV*);
187 SSPUSHPTR(item); /* remember the pointer */
190 SSPUSHPTR(sv); /* remember the value */
191 SSPUSHINT(SAVEt_ITEM);
201 SSPUSHINT(SAVEt_INT);
211 SSPUSHINT(SAVEt_LONG);
221 SSPUSHINT(SAVEt_I32);
224 /* Cannot use save_sptr() to store a char* since the SV** cast will
225 * force word-alignment and we'll miss the pointer.
234 SSPUSHINT(SAVEt_PPTR);
244 SSPUSHINT(SAVEt_SPTR);
253 SSPUSHINT(SAVEt_NSTAB);
263 SSPUSHINT(SAVEt_HPTR);
273 SSPUSHINT(SAVEt_APTR);
282 SSPUSHINT(SAVEt_FREESV);
291 SSPUSHINT(SAVEt_FREEOP);
300 SSPUSHINT(SAVEt_FREEPV);
309 SSPUSHINT(SAVEt_CLEARSV);
313 save_delete(hv,key,klen)
322 SSPUSHINT(SAVEt_DELETE);
326 save_list(sarg,maxsarg)
333 SSCHECK(3 * maxsarg);
334 for (i = 1; i <= maxsarg; i++) {
335 SSPUSHPTR(sarg[i]); /* remember the pointer */
337 sv_setsv(sv,sarg[i]);
338 SSPUSHPTR(sv); /* remember the value */
339 SSPUSHINT(SAVEt_ITEM);
355 croak("panic: corrupt saved stack index");
356 while (savestack_ix > base) {
358 case SAVEt_ITEM: /* normal string */
359 value = (SV*)SSPOPPTR;
361 sv_replace(sv,value);
364 case SAVEt_SV: /* scalar reference */
365 value = (SV*)SSPOPPTR;
368 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
369 SvMAGIC(value) = SvMAGIC(sv);
373 GvSV(gv) = sv = value;
376 case SAVEt_SVREF: /* scalar reference */
379 if (SvTYPE(sv) >= SVt_PVMG)
382 *(SV**)ptr = sv = (SV*)SSPOPPTR;
385 case SAVEt_AV: /* array reference */
388 SvREFCNT_dec(GvAV(gv));
391 case SAVEt_HV: /* hash reference */
394 SvREFCNT_dec(GvHV(gv));
397 case SAVEt_INT: /* int reference */
399 *(int*)ptr = (int)SSPOPINT;
401 case SAVEt_LONG: /* long reference */
403 *(long*)ptr = (long)SSPOPLONG;
405 case SAVEt_I32: /* I32 reference */
407 *(I32*)ptr = (I32)SSPOPINT;
409 case SAVEt_SPTR: /* SV* reference */
411 *(SV**)ptr = (SV*)SSPOPPTR;
413 case SAVEt_PPTR: /* char* reference */
415 *(char**)ptr = (char*)SSPOPPTR;
417 case SAVEt_HPTR: /* HV* reference */
419 *(HV**)ptr = (HV*)SSPOPPTR;
421 case SAVEt_APTR: /* AV* reference */
423 *(AV**)ptr = (AV*)SSPOPPTR;
429 case SAVEt_GP: /* scalar reference */
437 SvREFCNT_dec((SV*)ptr);
441 curpad = AvARRAY(comppad);
446 Safefree((char*)ptr);
451 if (SvREFCNT(sv) <= 1) { /* Can clear pad variable in place. */
452 if (SvTHINKFIRST(sv)) {
454 croak("panic: leave_scope clearsv");
459 switch (SvTYPE(sv)) {
473 if (SvPOK(sv) && SvLEN(sv))
480 else { /* Someone has a claim on this, so abandon it. */
481 SvREFCNT_dec(sv); /* Cast current value to the winds. */
482 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
483 case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break;
484 case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break;
485 default: *(SV**)ptr = NEWSV(0,0); break;
493 hv_delete(hv, (char*)ptr, (U32)SSPOPINT);
496 croak("panic: leave_scope inconsistency");
506 fprintf(stderr, "CX %d = %s\n", cx - cxstack, block_type[cx->cx_type]);
507 if (cx->cx_type != CXt_SUBST) {
508 fprintf(stderr, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
509 fprintf(stderr, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop);
510 fprintf(stderr, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
511 fprintf(stderr, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
512 fprintf(stderr, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
513 fprintf(stderr, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm);
514 fprintf(stderr, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
516 switch (cx->cx_type) {
521 fprintf(stderr, "BLK_SUB.CV = 0x%lx\n",
522 (long)cx->blk_sub.cv);
523 fprintf(stderr, "BLK_SUB.GV = 0x%lx\n",
524 (long)cx->blk_sub.gv);
525 fprintf(stderr, "BLK_SUB.DFOUTGV = 0x%lx\n",
526 (long)cx->blk_sub.dfoutgv);
527 fprintf(stderr, "BLK_SUB.OLDDEPTH = %ld\n",
528 (long)cx->blk_sub.olddepth);
529 fprintf(stderr, "BLK_SUB.HASARGS = %d\n",
530 (int)cx->blk_sub.hasargs);
533 fprintf(stderr, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
534 (long)cx->blk_eval.old_in_eval);
535 fprintf(stderr, "BLK_EVAL.OLD_OP_TYPE = %s\n",
536 op_name[cx->blk_eval.old_op_type]);
537 fprintf(stderr, "BLK_EVAL.OLD_NAME = %s\n",
538 cx->blk_eval.old_name);
539 fprintf(stderr, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n",
540 (long)cx->blk_eval.old_eval_root);
544 fprintf(stderr, "BLK_LOOP.LABEL = %s\n",
546 fprintf(stderr, "BLK_LOOP.RESETSP = %ld\n",
547 (long)cx->blk_loop.resetsp);
548 fprintf(stderr, "BLK_LOOP.REDO_OP = 0x%lx\n",
549 (long)cx->blk_loop.redo_op);
550 fprintf(stderr, "BLK_LOOP.NEXT_OP = 0x%lx\n",
551 (long)cx->blk_loop.next_op);
552 fprintf(stderr, "BLK_LOOP.LAST_OP = 0x%lx\n",
553 (long)cx->blk_loop.last_op);
554 fprintf(stderr, "BLK_LOOP.ITERIX = %ld\n",
555 (long)cx->blk_loop.iterix);
556 fprintf(stderr, "BLK_LOOP.ITERARY = 0x%lx\n",
557 (long)cx->blk_loop.iterary);
558 fprintf(stderr, "BLK_LOOP.ITERVAR = 0x%lx\n",
559 (long)cx->blk_loop.itervar);
560 if (cx->blk_loop.itervar)
561 fprintf(stderr, "BLK_LOOP.ITERSAVE = 0x%lx\n",
562 (long)cx->blk_loop.itersave);
566 fprintf(stderr, "SB_ITERS = %ld\n",
568 fprintf(stderr, "SB_MAXITERS = %ld\n",
569 (long)cx->sb_maxiters);
570 fprintf(stderr, "SB_SAFEBASE = %ld\n",
571 (long)cx->sb_safebase);
572 fprintf(stderr, "SB_ONCE = %ld\n",
574 fprintf(stderr, "SB_ORIG = %s\n",
576 fprintf(stderr, "SB_DSTR = 0x%lx\n",
578 fprintf(stderr, "SB_TARG = 0x%lx\n",
580 fprintf(stderr, "SB_S = 0x%lx\n",
582 fprintf(stderr, "SB_M = 0x%lx\n",
584 fprintf(stderr, "SB_STREND = 0x%lx\n",
585 (long)cx->sb_strend);
586 fprintf(stderr, "SB_SUBBASE = 0x%lx\n",
587 (long)cx->sb_subbase);