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));
99 SvMAGIC(sv) = SvMAGIC(osv);
107 #ifdef INLINED_ELSEWHERE
123 GvSV(gv) = NEWSV(72,0);
124 GvLINE(gv) = curcop->cop_line;
139 SSPUSHINT(SAVEt_SVREF);
141 sv = *sptr = NEWSV(0,0);
142 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(sv)) {
143 sv_upgrade(sv, SvTYPE(osv));
144 SvMAGIC(sv) = SvMAGIC(osv);
158 SSPUSHPTR(GvAVn(gv));
161 GvAV(gv) = Null(AV*);
171 SSPUSHPTR(GvHVn(gv));
174 GvHV(gv) = Null(HV*);
185 SSPUSHPTR(item); /* remember the pointer */
188 SSPUSHPTR(sv); /* remember the value */
189 SSPUSHINT(SAVEt_ITEM);
199 SSPUSHINT(SAVEt_INT);
209 SSPUSHINT(SAVEt_I32);
219 SSPUSHINT(SAVEt_SPTR);
228 SSPUSHINT(SAVEt_NSTAB);
238 SSPUSHINT(SAVEt_HPTR);
248 SSPUSHINT(SAVEt_APTR);
257 SSPUSHINT(SAVEt_FREESV);
266 SSPUSHINT(SAVEt_FREEOP);
275 SSPUSHINT(SAVEt_FREEPV);
284 SSPUSHINT(SAVEt_CLEARSV);
288 save_delete(hv,key,klen)
297 SSPUSHINT(SAVEt_DELETE);
301 save_list(sarg,maxsarg)
308 SSCHECK(3 * maxsarg);
309 for (i = 1; i <= maxsarg; i++) {
310 SSPUSHPTR(sarg[i]); /* remember the pointer */
312 sv_setsv(sv,sarg[i]);
313 SSPUSHPTR(sv); /* remember the value */
314 SSPUSHINT(SAVEt_ITEM);
330 croak("panic: corrupt saved stack index");
331 while (savestack_ix > base) {
333 case SAVEt_ITEM: /* normal string */
334 value = (SV*)SSPOPPTR;
336 sv_replace(sv,value);
339 case SAVEt_SV: /* scalar reference */
340 value = (SV*)SSPOPPTR;
343 if (SvTYPE(sv) >= SVt_PVMG)
346 GvSV(gv) = sv = value;
349 case SAVEt_SVREF: /* scalar reference */
352 if (SvTYPE(sv) >= SVt_PVMG)
355 *(SV**)ptr = sv = (SV*)SSPOPPTR;
358 case SAVEt_AV: /* array reference */
361 SvREFCNT_dec(GvAV(gv));
364 case SAVEt_HV: /* hash reference */
367 SvREFCNT_dec(GvHV(gv));
370 case SAVEt_INT: /* int reference */
372 *(int*)ptr = (int)SSPOPINT;
374 case SAVEt_I32: /* I32 reference */
376 *(I32*)ptr = (I32)SSPOPINT;
378 case SAVEt_SPTR: /* SV* reference */
380 *(SV**)ptr = (SV*)SSPOPPTR;
382 case SAVEt_HPTR: /* HV* reference */
384 *(HV**)ptr = (HV*)SSPOPPTR;
386 case SAVEt_APTR: /* AV* reference */
388 *(AV**)ptr = (AV*)SSPOPPTR;
394 case SAVEt_GP: /* scalar reference */
402 SvREFCNT_dec((SV*)ptr);
406 curpad = AvARRAY(comppad);
411 Safefree((char*)ptr);
416 if (SvREFCNT(sv) <= 1) { /* Can clear pad variable in place. */
417 if (SvTHINKFIRST(sv)) {
419 croak("panic: leave_scope clearsv");
424 switch (SvTYPE(sv)) {
438 if (SvPOK(sv) && SvLEN(sv))
445 else { /* Someone has a claim on this, so abandon it. */
446 SvREFCNT_dec(sv); /* Cast current value to the winds. */
447 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
448 case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break;
449 case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break;
450 default: *(SV**)ptr = NEWSV(0,0); break;
458 hv_delete(hv, (char*)ptr, (U32)SSPOPINT);
461 croak("panic: leave_scope inconsistency");
471 fprintf(stderr, "CX %d = %s\n", cx - cxstack, block_type[cx->cx_type]);
472 if (cx->cx_type != CXt_SUBST) {
473 fprintf(stderr, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
474 fprintf(stderr, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop);
475 fprintf(stderr, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
476 fprintf(stderr, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
477 fprintf(stderr, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
478 fprintf(stderr, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm);
479 fprintf(stderr, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
481 switch (cx->cx_type) {
486 fprintf(stderr, "BLK_SUB.CV = 0x%lx\n",
487 (long)cx->blk_sub.cv);
488 fprintf(stderr, "BLK_SUB.GV = 0x%lx\n",
489 (long)cx->blk_sub.gv);
490 fprintf(stderr, "BLK_SUB.DFOUTGV = 0x%lx\n",
491 (long)cx->blk_sub.dfoutgv);
492 fprintf(stderr, "BLK_SUB.OLDDEPTH = %ld\n",
493 (long)cx->blk_sub.olddepth);
494 fprintf(stderr, "BLK_SUB.HASARGS = %d\n",
495 (int)cx->blk_sub.hasargs);
498 fprintf(stderr, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
499 (long)cx->blk_eval.old_in_eval);
500 fprintf(stderr, "BLK_EVAL.OLD_OP_TYPE = %s\n",
501 op_name[cx->blk_eval.old_op_type]);
502 fprintf(stderr, "BLK_EVAL.OLD_NAME = %s\n",
503 cx->blk_eval.old_name);
504 fprintf(stderr, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n",
505 (long)cx->blk_eval.old_eval_root);
509 fprintf(stderr, "BLK_LOOP.LABEL = %s\n",
511 fprintf(stderr, "BLK_LOOP.RESETSP = %ld\n",
512 (long)cx->blk_loop.resetsp);
513 fprintf(stderr, "BLK_LOOP.REDO_OP = 0x%lx\n",
514 (long)cx->blk_loop.redo_op);
515 fprintf(stderr, "BLK_LOOP.NEXT_OP = 0x%lx\n",
516 (long)cx->blk_loop.next_op);
517 fprintf(stderr, "BLK_LOOP.LAST_OP = 0x%lx\n",
518 (long)cx->blk_loop.last_op);
519 fprintf(stderr, "BLK_LOOP.ITERIX = %ld\n",
520 (long)cx->blk_loop.iterix);
521 fprintf(stderr, "BLK_LOOP.ITERARY = 0x%lx\n",
522 (long)cx->blk_loop.iterary);
523 fprintf(stderr, "BLK_LOOP.ITERVAR = 0x%lx\n",
524 (long)cx->blk_loop.itervar);
525 if (cx->blk_loop.itervar)
526 fprintf(stderr, "BLK_LOOP.ITERSAVE = 0x%lx\n",
527 (long)cx->blk_loop.itersave);
531 fprintf(stderr, "SB_ITERS = %ld\n",
533 fprintf(stderr, "SB_MAXITERS = %ld\n",
534 (long)cx->sb_maxiters);
535 fprintf(stderr, "SB_SAFEBASE = %ld\n",
536 (long)cx->sb_safebase);
537 fprintf(stderr, "SB_ONCE = %ld\n",
539 fprintf(stderr, "SB_ORIG = %s\n",
541 fprintf(stderr, "SB_DSTR = 0x%lx\n",
543 fprintf(stderr, "SB_TARG = 0x%lx\n",
545 fprintf(stderr, "SB_S = 0x%lx\n",
547 fprintf(stderr, "SB_M = 0x%lx\n",
549 fprintf(stderr, "SB_STREND = 0x%lx\n",
550 (long)cx->sb_strend);
551 fprintf(stderr, "SB_SUBBASE = 0x%lx\n",
552 (long)cx->sb_subbase);