3 * Copyright (c) 1991-1994, 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.
11 * "For the fashion of Minas Tirith was such that it was built on seven
25 av_extend(stack, (p - stack_base) + (n) + 128);
27 stack_sp = AvARRAY(stack) + (sp - stack_base);
28 stack_base = AvARRAY(stack);
29 stack_max = stack_base + AvMAX(stack) - 1;
37 cxstack_max = cxstack_max * 3 / 2;
38 Renew(cxstack, cxstack_max, CONTEXT);
39 return cxstack_ix + 1;
46 if (retstack_ix == retstack_max) {
47 retstack_max = retstack_max * 3 / 2;
48 Renew(retstack, retstack_max, OP*);
50 retstack[retstack_ix++] = retop;
57 return retstack[--retstack_ix];
65 if (scopestack_ix == scopestack_max) {
66 scopestack_max = scopestack_max * 3 / 2;
67 Renew(scopestack, scopestack_max, I32);
69 scopestack[scopestack_ix++] = savestack_ix;
76 I32 oldsave = scopestack[--scopestack_ix];
83 I32 oldmax = markstack_max - markstack;
84 I32 newmax = oldmax * 3 / 2;
86 Renew(markstack, newmax, I32);
87 markstack_ptr = markstack + oldmax;
88 markstack_max = markstack + newmax;
94 savestack_max = savestack_max * 3 / 2;
95 Renew(savestack, savestack_max, ANY);
101 /* XXX should tmps_floor live in cxstack? */
102 I32 myfloor = tmps_floor;
103 while (tmps_ix > myfloor) { /* clean up after last statement */
104 SV* sv = tmps_stack[tmps_ix];
105 tmps_stack[tmps_ix--] = Nullsv;
110 SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
127 sv = GvSV(gv) = NEWSV(0,0);
128 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
129 sv_upgrade(sv, SvTYPE(osv));
130 if (SvGMAGICAL(osv)) {
132 SvFLAGS(osv) |= (SvFLAGS(osv) &
133 (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
135 SvMAGIC(sv) = SvMAGIC(osv);
136 SvFLAGS(sv) |= SvMAGICAL(osv);
144 #ifdef INLINED_ELSEWHERE
160 GvSV(gv) = NEWSV(72,0);
161 GvLINE(gv) = curcop->cop_line;
176 SSPUSHINT(SAVEt_SVREF);
178 sv = *sptr = NEWSV(0,0);
179 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
180 sv_upgrade(sv, SvTYPE(osv));
181 if (SvGMAGICAL(osv)) {
183 SvFLAGS(osv) |= (SvFLAGS(osv) &
184 (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
186 SvMAGIC(sv) = SvMAGIC(osv);
187 SvFLAGS(sv) |= SvMAGICAL(osv);
201 SSPUSHPTR(GvAVn(gv));
204 GvAV(gv) = Null(AV*);
214 SSPUSHPTR(GvHVn(gv));
217 GvHV(gv) = Null(HV*);
228 SSPUSHPTR(item); /* remember the pointer */
231 SSPUSHPTR(sv); /* remember the value */
232 SSPUSHINT(SAVEt_ITEM);
242 SSPUSHINT(SAVEt_INT);
252 SSPUSHINT(SAVEt_LONG);
262 SSPUSHINT(SAVEt_I32);
275 /* Cannot use save_sptr() to store a char* since the SV** cast will
276 * force word-alignment and we'll miss the pointer.
285 SSPUSHINT(SAVEt_PPTR);
295 SSPUSHINT(SAVEt_SPTR);
304 SSPUSHINT(SAVEt_NSTAB);
314 SSPUSHINT(SAVEt_HPTR);
324 SSPUSHINT(SAVEt_APTR);
333 SSPUSHINT(SAVEt_FREESV);
342 SSPUSHINT(SAVEt_FREEOP);
351 SSPUSHINT(SAVEt_FREEPV);
360 SSPUSHINT(SAVEt_CLEARSV);
364 save_delete(hv,key,klen)
373 SSPUSHINT(SAVEt_DELETE);
377 save_list(sarg,maxsarg)
384 SSCHECK(3 * maxsarg);
385 for (i = 1; i <= maxsarg; i++) {
386 SSPUSHPTR(sarg[i]); /* remember the pointer */
388 sv_setsv(sv,sarg[i]);
389 SSPUSHPTR(sv); /* remember the value */
390 SSPUSHINT(SAVEt_ITEM);
396 void (*f) _((void*));
402 SSPUSHINT(SAVEt_DESTRUCTOR);
417 croak("panic: corrupt saved stack index");
418 while (savestack_ix > base) {
420 case SAVEt_ITEM: /* normal string */
421 value = (SV*)SSPOPPTR;
423 sv_replace(sv,value);
428 case SAVEt_SV: /* scalar reference */
429 value = (SV*)SSPOPPTR;
432 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && SvTYPE(sv) != SVt_PVGV){
433 (void)SvUPGRADE(value, SvTYPE(sv));
434 SvMAGIC(value) = SvMAGIC(sv);
435 SvFLAGS(value) |= SvMAGICAL(sv);
445 case SAVEt_SVREF: /* scalar reference */
448 value = (SV*)SSPOPPTR;
449 if (SvTYPE(sv) >= SVt_PVMG && SvTYPE(sv) != SVt_PVGV) {
450 (void)SvUPGRADE(value, SvTYPE(sv));
451 SvMAGIC(value) = SvMAGIC(sv);
452 SvFLAGS(value) |= SvMAGICAL(sv);
462 case SAVEt_AV: /* array reference */
465 SvREFCNT_dec(GvAV(gv));
468 case SAVEt_HV: /* hash reference */
471 SvREFCNT_dec(GvHV(gv));
474 case SAVEt_INT: /* int reference */
476 *(int*)ptr = (int)SSPOPINT;
478 case SAVEt_LONG: /* long reference */
480 *(long*)ptr = (long)SSPOPLONG;
482 case SAVEt_I32: /* I32 reference */
484 *(I32*)ptr = (I32)SSPOPINT;
486 case SAVEt_IV: /* IV reference */
488 *(IV*)ptr = (IV)SSPOPIV;
490 case SAVEt_SPTR: /* SV* reference */
492 *(SV**)ptr = (SV*)SSPOPPTR;
494 case SAVEt_PPTR: /* char* reference */
496 *(char**)ptr = (char*)SSPOPPTR;
498 case SAVEt_HPTR: /* HV* reference */
500 *(HV**)ptr = (HV*)SSPOPPTR;
502 case SAVEt_APTR: /* AV* reference */
504 *(AV**)ptr = (AV*)SSPOPPTR;
510 case SAVEt_GP: /* scalar reference */
518 SvREFCNT_dec((SV*)ptr);
522 curpad = AvARRAY(comppad);
527 Safefree((char*)ptr);
532 if (SvREFCNT(sv) <= 1) { /* Can clear pad variable in place. */
533 if (SvTHINKFIRST(sv)) {
535 croak("panic: leave_scope clearsv");
542 switch (SvTYPE(sv)) {
556 if (SvPOK(sv) && SvLEN(sv))
562 else { /* Someone has a claim on this, so abandon it. */
563 SvREFCNT_dec(sv); /* Cast current value to the winds. */
564 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
565 case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break;
566 case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break;
567 default: *(SV**)ptr = NEWSV(0,0); break;
575 hv_delete(hv, (char*)ptr, (U32)SSPOPINT);
577 case SAVEt_DESTRUCTOR:
581 case SAVEt_REGCONTEXT:
582 savestack_ix -= SSPOPINT; /* regexp must have croaked */
585 croak("panic: leave_scope inconsistency");
595 fprintf(stderr, "CX %d = %s\n", cx - cxstack, block_type[cx->cx_type]);
596 if (cx->cx_type != CXt_SUBST) {
597 fprintf(stderr, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
598 fprintf(stderr, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop);
599 fprintf(stderr, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
600 fprintf(stderr, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
601 fprintf(stderr, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
602 fprintf(stderr, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm);
603 fprintf(stderr, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
605 switch (cx->cx_type) {
610 fprintf(stderr, "BLK_SUB.CV = 0x%lx\n",
611 (long)cx->blk_sub.cv);
612 fprintf(stderr, "BLK_SUB.GV = 0x%lx\n",
613 (long)cx->blk_sub.gv);
614 fprintf(stderr, "BLK_SUB.DFOUTGV = 0x%lx\n",
615 (long)cx->blk_sub.dfoutgv);
616 fprintf(stderr, "BLK_SUB.OLDDEPTH = %ld\n",
617 (long)cx->blk_sub.olddepth);
618 fprintf(stderr, "BLK_SUB.HASARGS = %d\n",
619 (int)cx->blk_sub.hasargs);
622 fprintf(stderr, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
623 (long)cx->blk_eval.old_in_eval);
624 fprintf(stderr, "BLK_EVAL.OLD_OP_TYPE = %s\n",
625 op_name[cx->blk_eval.old_op_type]);
626 fprintf(stderr, "BLK_EVAL.OLD_NAME = %s\n",
627 cx->blk_eval.old_name);
628 fprintf(stderr, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n",
629 (long)cx->blk_eval.old_eval_root);
633 fprintf(stderr, "BLK_LOOP.LABEL = %s\n",
635 fprintf(stderr, "BLK_LOOP.RESETSP = %ld\n",
636 (long)cx->blk_loop.resetsp);
637 fprintf(stderr, "BLK_LOOP.REDO_OP = 0x%lx\n",
638 (long)cx->blk_loop.redo_op);
639 fprintf(stderr, "BLK_LOOP.NEXT_OP = 0x%lx\n",
640 (long)cx->blk_loop.next_op);
641 fprintf(stderr, "BLK_LOOP.LAST_OP = 0x%lx\n",
642 (long)cx->blk_loop.last_op);
643 fprintf(stderr, "BLK_LOOP.ITERIX = %ld\n",
644 (long)cx->blk_loop.iterix);
645 fprintf(stderr, "BLK_LOOP.ITERARY = 0x%lx\n",
646 (long)cx->blk_loop.iterary);
647 fprintf(stderr, "BLK_LOOP.ITERVAR = 0x%lx\n",
648 (long)cx->blk_loop.itervar);
649 if (cx->blk_loop.itervar)
650 fprintf(stderr, "BLK_LOOP.ITERSAVE = 0x%lx\n",
651 (long)cx->blk_loop.itersave);
655 fprintf(stderr, "SB_ITERS = %ld\n",
657 fprintf(stderr, "SB_MAXITERS = %ld\n",
658 (long)cx->sb_maxiters);
659 fprintf(stderr, "SB_SAFEBASE = %ld\n",
660 (long)cx->sb_safebase);
661 fprintf(stderr, "SB_ONCE = %ld\n",
663 fprintf(stderr, "SB_ORIG = %s\n",
665 fprintf(stderr, "SB_DSTR = 0x%lx\n",
667 fprintf(stderr, "SB_TARG = 0x%lx\n",
669 fprintf(stderr, "SB_S = 0x%lx\n",
671 fprintf(stderr, "SB_M = 0x%lx\n",
673 fprintf(stderr, "SB_STREND = 0x%lx\n",
674 (long)cx->sb_strend);
675 fprintf(stderr, "SB_SUBBASE = 0x%lx\n",
676 (long)cx->sb_subbase);