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 * 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.
23 #define WORD_ALIGN sizeof(U16)
26 static OP *doeval _((int gimme));
27 static OP *dofindlabel _((OP *op, char *label, OP **opstack));
28 static void doparseform _((SV *sv));
29 static I32 dopoptoeval _((I32 startingblock));
30 static I32 dopoptolabel _((char *label));
31 static I32 dopoptoloop _((I32 startingblock));
32 static I32 dopoptosub _((I32 startingblock));
33 static void save_lines _((AV *array, SV *sv));
34 static int sortcmp _((const void *, const void *));
35 static int sortcv _((const void *, const void *));
45 cxix = dopoptosub(cxstack_ix);
49 if (cxstack[cxix].blk_gimme == G_ARRAY)
62 register PMOP *pm = (PMOP*)cLOGOP->op_other;
68 t = SvPV(tmpstr, len);
70 if (pm->op_pmregexp) {
71 regfree(pm->op_pmregexp);
72 pm->op_pmregexp = Null(REGEXP*); /* crucial if regcomp aborts */
75 pm->op_pmregexp = regcomp(t, t + len, pm);
77 if (!pm->op_pmregexp->prelen && curpm)
79 else if (strEQ("\\s+", pm->op_pmregexp->precomp))
80 pm->op_pmflags |= PMf_WHITE;
82 if (pm->op_pmflags & PMf_KEEP) {
84 if (!(pm->op_pmflags & PMf_FOLD))
85 scan_prefix(pm, pm->op_pmregexp->precomp,
86 pm->op_pmregexp->prelen);
88 pm->op_pmflags &= ~PMf_RUNTIME; /* no point compiling again */
90 cLOGOP->op_first->op_next = op->op_next;
91 /* XXX delete push code? */
99 register PMOP *pm = (PMOP*) cLOGOP->op_other;
100 register CONTEXT *cx = &cxstack[cxstack_ix];
101 register SV *dstr = cx->sb_dstr;
102 register char *s = cx->sb_s;
103 register char *m = cx->sb_m;
104 char *orig = cx->sb_orig;
105 register REGEXP *rx = pm->op_pmregexp;
107 if (cx->sb_iters++) {
108 if (cx->sb_iters > cx->sb_maxiters)
109 DIE("Substitution loop");
111 sv_catsv(dstr, POPs);
113 Safefree(rx->subbase);
114 rx->subbase = cx->sb_subbase;
117 if (cx->sb_once || !regexec(rx, s, cx->sb_strend, orig,
118 s == m, Nullsv, cx->sb_safebase))
120 SV *targ = cx->sb_targ;
121 sv_catpvn(dstr, s, cx->sb_strend - s);
122 sv_replace(targ, dstr);
123 (void)SvPOK_only(targ);
125 PUSHs(sv_2mortal(newSViv((I32)cx->sb_iters - 1)));
127 RETURNOP(pm->op_next);
130 if (rx->subbase && rx->subbase != orig) {
133 cx->sb_orig = orig = rx->subbase;
135 cx->sb_strend = s + (cx->sb_strend - m);
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;
142 rx->subbase = Nullch; /* so recursion works */
143 RETURNOP(pm->op_pmreplstart);
148 dSP; dMARK; dORIGMARK;
149 register SV *form = *++MARK;
161 bool chopspace = (strchr(chopset, ' ') != Nullch);
170 if (!SvCOMPILED(form)) {
171 SvREADONLY_off(form);
175 SvPV_force(formtarget, len);
176 t = SvGROW(formtarget, len + SvCUR(form) + 1); /* XXX SvCUR bad */
179 /* need to jump to the next word */
180 s = f + len + WORD_ALIGN - SvCUR(form) % WORD_ALIGN;
189 case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break;
190 case FF_BLANK: arg = fpc[1]; name = "BLANK"; break;
191 case FF_SKIP: arg = fpc[1]; name = "SKIP"; break;
192 case FF_FETCH: arg = fpc[1]; name = "FETCH"; break;
193 case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break;
195 case FF_CHECKNL: name = "CHECKNL"; break;
196 case FF_CHECKCHOP: name = "CHECKCHOP"; break;
197 case FF_SPACE: name = "SPACE"; break;
198 case FF_HALFSPACE: name = "HALFSPACE"; break;
199 case FF_ITEM: name = "ITEM"; break;
200 case FF_CHOP: name = "CHOP"; break;
201 case FF_LINEGLOB: name = "LINEGLOB"; break;
202 case FF_NEWLINE: name = "NEWLINE"; break;
203 case FF_MORE: name = "MORE"; break;
204 case FF_LINEMARK: name = "LINEMARK"; break;
205 case FF_END: name = "END"; break;
208 fprintf(stderr, "%-16s%ld\n", name, (long) arg);
210 fprintf(stderr, "%-16s\n", name);
241 warn("Not enough format arguments");
246 item = s = SvPV(sv, len);
248 if (itemsize > fieldsize)
249 itemsize = fieldsize;
250 send = chophere = s + itemsize;
262 item = s = SvPV(sv, len);
264 if (itemsize <= fieldsize) {
265 send = chophere = s + itemsize;
276 itemsize = fieldsize;
277 send = chophere = s + itemsize;
278 while (s < send || (s == send && isSPACE(*s))) {
288 if (strchr(chopset, *s))
293 itemsize = chophere - item;
298 arg = fieldsize - itemsize;
307 arg = fieldsize - itemsize;
321 int ch = *t++ = *s++;
325 if ( !((*t++ = *s++) & ~31) )
335 while (*s && isSPACE(*s))
342 item = s = SvPV(sv, len);
355 SvCUR_set(formtarget, t - SvPVX(formtarget));
356 sv_catpvn(formtarget, item, itemsize);
357 SvGROW(formtarget, SvCUR(formtarget) + SvCUR(form) + 1);
358 t = SvPVX(formtarget) + SvCUR(formtarget);
363 /* If the field is marked with ^ and the value is undefined,
366 if ((arg & 512) && !SvOK(sv)) {
375 sprintf(t, "%#*.*f", (int) fieldsize, (int) arg & 255, value);
377 sprintf(t, "%*.0f", (int) fieldsize, value);
384 while (t-- > linemark && *t == ' ') ;
392 if (arg) { /* repeat until fields exhausted? */
394 SvCUR_set(formtarget, t - SvPVX(formtarget));
395 lines += FmLINES(formtarget);
398 if (strnEQ(linemark, linemark - arg, arg))
399 DIE("Runaway format");
401 FmLINES(formtarget) = lines;
403 RETURNOP(cLISTOP->op_first);
414 arg = fieldsize - itemsize;
421 if (strnEQ(s," ",3)) {
422 while (s > SvPVX(formtarget) && isSPACE(s[-1]))
433 SvCUR_set(formtarget, t - SvPVX(formtarget));
434 FmLINES(formtarget) += lines;
446 if (stack_base + *markstack_ptr == sp) {
448 if (GIMME != G_ARRAY)
450 RETURNOP(op->op_next->op_next);
452 stack_sp = stack_base + *markstack_ptr + 1;
453 pp_pushmark(); /* push dst */
454 pp_pushmark(); /* push src */
455 ENTER; /* enter outer scope */
458 SAVESPTR(GvSV(defgv));
460 ENTER; /* enter inner scope */
463 src = stack_base[*markstack_ptr];
468 if (op->op_type == OP_MAPSTART)
469 pp_pushmark(); /* push top */
470 return ((LOGOP*)op->op_next)->op_other;
475 DIE("panic: mapstart"); /* uses grepstart */
481 I32 diff = (sp - stack_base) - *markstack_ptr;
489 if (diff > markstack_ptr[-1] - markstack_ptr[-2]) {
490 shift = diff - (markstack_ptr[-1] - markstack_ptr[-2]);
491 count = (sp - stack_base) - markstack_ptr[-1] + 2;
496 markstack_ptr[-1] += shift;
497 *markstack_ptr += shift;
501 dst = stack_base + (markstack_ptr[-2] += diff) - 1;
504 *dst-- = SvTEMP(TOPs) ? POPs : sv_mortalcopy(POPs);
506 LEAVE; /* exit inner scope */
509 if (markstack_ptr[-1] > *markstack_ptr) {
512 (void)POPMARK; /* pop top */
513 LEAVE; /* exit outer scope */
514 (void)POPMARK; /* pop src */
515 items = --*markstack_ptr - markstack_ptr[-1];
516 (void)POPMARK; /* pop dst */
517 SP = stack_base + POPMARK; /* pop original mark */
518 if (GIMME != G_ARRAY) {
529 ENTER; /* enter inner scope */
532 src = stack_base[markstack_ptr[-1]];
536 RETURNOP(cLOGOP->op_other);
543 dSP; dMARK; dORIGMARK;
545 SV **myorigmark = ORIGMARK;
551 OP* nextop = op->op_next;
553 if (gimme != G_ARRAY) {
558 if (op->op_flags & OPf_STACKED) {
560 if (op->op_flags & OPf_SPECIAL) {
561 OP *kid = cLISTOP->op_first->op_sibling; /* pass pushmark */
562 kid = kUNOP->op_first; /* pass rv2gv */
563 kid = kUNOP->op_first; /* pass leave */
564 sortcop = kid->op_next;
565 stash = curcop->cop_stash;
568 cv = sv_2cv(*++MARK, &stash, &gv, 0);
569 if (!(cv && CvROOT(cv))) {
571 SV *tmpstr = sv_newmortal();
572 gv_efullname(tmpstr, gv);
573 if (cv && CvXSUB(cv))
574 DIE("Xsub \"%s\" called in sort", SvPVX(tmpstr));
575 DIE("Undefined sort subroutine \"%s\" called",
580 DIE("Xsub called in sort");
581 DIE("Undefined subroutine in sort");
583 DIE("Not a CODE reference in sort");
585 sortcop = CvSTART(cv);
586 SAVESPTR(CvROOT(cv)->op_ppaddr);
587 CvROOT(cv)->op_ppaddr = ppaddr[OP_NULL];
590 curpad = AvARRAY((AV*)AvARRAY(CvPADLIST(cv))[1]);
595 stash = curcop->cop_stash;
599 while (MARK < SP) { /* This may or may not shift down one here. */
601 if (*up = *++MARK) { /* Weed out nulls. */
603 (void)sv_2pv(*up, &na);
609 max = --up - myorigmark;
622 AvREAL_off(sortstack);
623 av_extend(sortstack, 32);
625 SWITCHSTACK(stack, sortstack);
626 if (sortstash != stash) {
627 firstgv = gv_fetchpv("a", TRUE, SVt_PV);
628 secondgv = gv_fetchpv("b", TRUE, SVt_PV);
632 SAVESPTR(GvSV(firstgv));
633 SAVESPTR(GvSV(secondgv));
634 PUSHBLOCK(cx, CXt_LOOP, stack_base);
635 sortcxix = cxstack_ix;
637 qsort((char*)(myorigmark+1), max, sizeof(SV*), sortcv);
640 SWITCHSTACK(sortstack, oldstack);
646 MEXTEND(SP, 20); /* Can't afford stack realloc on signal. */
647 qsort((char*)(ORIGMARK+1), max, sizeof(SV*), sortcmp);
650 stack_sp = ORIGMARK + max;
658 if (GIMME == G_ARRAY)
659 return cCONDOP->op_true;
660 return SvTRUEx(PAD_SV(op->op_targ)) ? cCONDOP->op_false : cCONDOP->op_true;
667 if (GIMME == G_ARRAY) {
668 RETURNOP(((CONDOP*)cUNOP->op_first)->op_false);
672 SV *targ = PAD_SV(op->op_targ);
674 if ((op->op_private & OPpFLIP_LINENUM)
675 ? last_in_gv && SvIV(sv) == IoLINES(GvIOp(last_in_gv))
677 sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1);
678 if (op->op_flags & OPf_SPECIAL) {
685 RETURNOP(((CONDOP*)cUNOP->op_first)->op_false);
698 if (GIMME == G_ARRAY) {
704 if (SvNIOK(left) || !SvPOK(left) ||
705 (looks_like_number(left) && *SvPVX(left) != '0') ) {
709 EXTEND(SP, max - i + 1);
711 sv = sv_mortalcopy(&sv_no);
717 SV *final = sv_mortalcopy(right);
719 char *tmps = SvPV(final, len);
721 sv = sv_mortalcopy(left);
722 while (!SvNIOK(sv) && SvCUR(sv) <= len &&
723 strNE(SvPVX(sv),tmps) ) {
725 sv = sv_2mortal(newSVsv(sv));
728 if (strEQ(SvPVX(sv),tmps))
734 SV *targ = PAD_SV(cUNOP->op_first->op_targ);
736 if ((op->op_private & OPpFLIP_LINENUM)
737 ? last_in_gv && SvIV(sv) == IoLINES(GvIOp(last_in_gv))
739 sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0);
740 sv_catpv(targ, "E0");
755 register CONTEXT *cx;
757 for (i = cxstack_ix; i >= 0; i--) {
759 switch (cx->cx_type) {
762 warn("Exiting substitution via %s", op_name[op->op_type]);
766 warn("Exiting subroutine via %s", op_name[op->op_type]);
770 warn("Exiting eval via %s", op_name[op->op_type]);
773 if (!cx->blk_loop.label ||
774 strNE(label, cx->blk_loop.label) ) {
775 DEBUG_l(deb("(Skipping label #%d %s)\n",
776 i, cx->blk_loop.label));
779 DEBUG_l( deb("(Found label #%d %s)\n", i, label));
787 dopoptosub(startingblock)
791 register CONTEXT *cx;
792 for (i = startingblock; i >= 0; i--) {
794 switch (cx->cx_type) {
799 DEBUG_l( deb("(Found sub #%d)\n", i));
807 dopoptoeval(startingblock)
811 register CONTEXT *cx;
812 for (i = startingblock; i >= 0; i--) {
814 switch (cx->cx_type) {
818 DEBUG_l( deb("(Found eval #%d)\n", i));
826 dopoptoloop(startingblock)
830 register CONTEXT *cx;
831 for (i = startingblock; i >= 0; i--) {
833 switch (cx->cx_type) {
836 warn("Exiting substitition via %s", op_name[op->op_type]);
840 warn("Exiting subroutine via %s", op_name[op->op_type]);
844 warn("Exiting eval via %s", op_name[op->op_type]);
847 DEBUG_l( deb("(Found loop #%d)\n", i));
858 register CONTEXT *cx;
862 while (cxstack_ix > cxix) {
863 cx = &cxstack[cxstack_ix--];
864 DEBUG_l(fprintf(stderr, "Unwinding block %ld, type %s\n", (long) cxstack_ix+1,
865 block_type[cx->cx_type]));
866 /* Note: we don't need to restore the base context info till the end. */
867 switch (cx->cx_type) {
896 int oldrunlevel = runlevel;
897 int was_in_eval = in_eval;
904 message = mess(pat, &args);
906 restartop = die_where(message);
907 if ((!restartop && was_in_eval) || oldrunlevel > 1)
918 register CONTEXT *cx;
922 sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),message);
923 cxix = dopoptoeval(cxstack_ix);
927 if (cxix < cxstack_ix)
931 if (cx->cx_type != CXt_EVAL) {
932 fprintf(stderr, "panic: die %s", message);
937 if (gimme == G_SCALAR)
938 *++newsp = &sv_undef;
942 if (optype == OP_REQUIRE)
943 DIE("%s", SvPVx(GvSV(gv_fetchpv("@",TRUE, SVt_PV)), na));
947 fputs(message, stderr);
948 (void)fflush(stderr);
950 (void)UNLINK(e_tmpname);
952 my_exit((I32)((errno&255)?errno:((statusvalue&255)?statusvalue:255)));
959 if (SvTRUE(left) != SvTRUE(right))
971 RETURNOP(cLOGOP->op_other);
980 RETURNOP(cLOGOP->op_other);
987 SV** mark = (stack_base + *markstack_ptr + 1);
989 while (mark < sp) { /* emulate old interface */
994 return pp_entersub();
1001 register I32 cxix = dopoptosub(cxstack_ix);
1002 register CONTEXT *cx;
1012 if (GIMME != G_ARRAY)
1016 if (DBsub && cxix >= 0 &&
1017 cxstack[cxix].blk_sub.cv == GvCV(DBsub))
1021 cxix = dopoptosub(cxix - 1);
1023 cx = &cxstack[cxix];
1024 if (GIMME != G_ARRAY) {
1027 sv_setpv(TARG, HvNAME(cx->blk_oldcop->cop_stash));
1031 dbcxix = dopoptosub(cxix - 1);
1032 if (DBsub && dbcxix >= 0 && cxstack[dbcxix].blk_sub.cv == GvCV(DBsub))
1033 cx = &cxstack[dbcxix];
1035 PUSHs(sv_2mortal(newSVpv(HvNAME(cx->blk_oldcop->cop_stash), 0)));
1036 PUSHs(sv_2mortal(newSVpv(SvPVX(GvSV(cx->blk_oldcop->cop_filegv)), 0)));
1037 PUSHs(sv_2mortal(newSViv((I32)cx->blk_oldcop->cop_line)));
1040 if (cx->cx_type == CXt_SUB) {
1042 gv_efullname(sv, CvGV(cxstack[cxix].blk_sub.cv));
1043 PUSHs(sv_2mortal(sv));
1044 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1047 PUSHs(sv_2mortal(newSVpv("(eval)",0)));
1048 PUSHs(sv_2mortal(newSViv(0)));
1050 PUSHs(sv_2mortal(newSViv((I32)cx->blk_gimme)));
1051 if (cx->blk_sub.hasargs && curcop->cop_stash == debstash) {
1052 AV *ary = cx->blk_sub.argarray;
1053 int off = AvARRAY(ary) - AvALLOC(ary);
1057 dbargs = GvAV(gv_AVadd(tmpgv = gv_fetchpv("DB::args", TRUE,
1060 AvREAL_off(dbargs); /* XXX Should be REIFY */
1063 if (AvMAX(dbargs) < AvFILL(ary) + off)
1064 av_extend(dbargs, AvFILL(ary) + off);
1065 Copy(AvALLOC(ary), AvARRAY(dbargs), AvFILL(ary) + 1 + off, SV*);
1066 AvFILL(dbargs) = AvFILL(ary) + off;
1076 SV **str1 = (SV **) a;
1077 SV **str2 = (SV **) b;
1078 I32 oldscopeix = scopestack_ix;
1080 GvSV(firstgv) = *str1;
1081 GvSV(secondgv) = *str2;
1082 stack_sp = stack_base;
1085 if (stack_sp != stack_base + 1)
1086 croak("Sort subroutine didn't return single value");
1087 if (!SvNIOK(*stack_sp))
1088 croak("Sort subroutine didn't return a numeric value");
1089 result = SvIV(*stack_sp);
1090 while (scopestack_ix > oldscopeix) {
1101 register SV *str1 = *(SV **) a;
1102 register SV *str2 = *(SV **) b;
1105 if (SvCUR(str1) < SvCUR(str2)) {
1107 if (retval = memcmp(SvPVX(str1), SvPVX(str2), SvCUR(str1)))
1113 else if (retval = memcmp(SvPVX(str1), SvPVX(str2), SvCUR(str2)))
1115 else if (SvCUR(str1) == SvCUR(str2))
1130 sv_reset(tmps, curcop->cop_stash);
1143 TAINT_NOT; /* Each statement is presumed innocent */
1144 stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
1147 if (op->op_private || SvIV(DBsingle) || SvIV(DBsignal) || SvIV(DBtrace))
1151 register CONTEXT *cx;
1168 DIE("No DB::DB routine defined");
1170 if (CvDEPTH(cv) >= 1) /* don't do recursive DB::DB call */
1172 push_return(op->op_next);
1173 PUSHBLOCK(cx, CXt_SUB, sp - 1);
1176 (void)SvREFCNT_inc(cv);
1178 curpad = AvARRAY((AV*)*av_fetch(CvPADLIST(cv),1,FALSE));
1179 RETURNOP(CvSTART(cv));
1193 register CONTEXT *cx;
1198 svp = &curpad[op->op_targ]; /* "my" variable */
1200 svp = &GvSV((GV*)POPs); /* symbol table variable */
1206 PUSHBLOCK(cx, CXt_LOOP, SP);
1207 PUSHLOOP(cx, svp, MARK);
1208 cx->blk_loop.iterary = stack;
1209 cx->blk_loop.iterix = MARK - stack_base;
1217 register CONTEXT *cx;
1224 PUSHBLOCK(cx, CXt_LOOP, SP);
1225 PUSHLOOP(cx, 0, SP);
1233 register CONTEXT *cx;
1242 if (gimme == G_SCALAR) {
1243 if (op->op_private & OPpLEAVE_VOID)
1247 *++newsp = sv_mortalcopy(*SP);
1249 *++newsp = &sv_undef;
1254 *++newsp = sv_mortalcopy(*++mark);
1256 curpm = newpm; /* Don't pop $1 et al till now */
1268 register CONTEXT *cx;
1274 if (stack == sortstack) {
1275 if (cxstack_ix == sortcxix || dopoptosub(cxstack_ix) < sortcxix) {
1276 AvARRAY(stack)[1] = *SP;
1277 stack_sp = stack_base + 1;
1282 cxix = dopoptosub(cxstack_ix);
1284 DIE("Can't return outside a subroutine");
1285 if (cxix < cxstack_ix)
1289 switch (cx->cx_type) {
1297 DIE("panic: return");
1301 if (gimme == G_SCALAR) {
1303 *++newsp = sv_mortalcopy(*SP);
1305 *++newsp = &sv_undef;
1306 if (optype == OP_REQUIRE && !SvTRUE(*newsp))
1307 DIE("%s", SvPVx(GvSV(gv_fetchpv("@",TRUE, SVt_PV)), na));
1310 if (optype == OP_REQUIRE && MARK == SP)
1311 DIE("%s", SvPVx(GvSV(gv_fetchpv("@",TRUE, SVt_PV)), na));
1313 *++newsp = sv_mortalcopy(*++MARK);
1315 curpm = newpm; /* Don't pop $1 et al till now */
1319 return pop_return();
1326 register CONTEXT *cx;
1332 SV **mark = stack_base + cxstack[cxstack_ix].blk_oldsp;
1333 /* XXX The sp is probably not right yet... */
1335 if (op->op_flags & OPf_SPECIAL) {
1336 cxix = dopoptoloop(cxstack_ix);
1338 DIE("Can't \"last\" outside a block");
1341 cxix = dopoptolabel(cPVOP->op_pv);
1343 DIE("Label not found for \"last %s\"", cPVOP->op_pv);
1345 if (cxix < cxstack_ix)
1349 switch (cx->cx_type) {
1352 nextop = cx->blk_loop.last_op->op_next;
1357 nextop = pop_return();
1361 nextop = pop_return();
1368 if (gimme == G_SCALAR) {
1370 *++newsp = sv_mortalcopy(*SP);
1372 *++newsp = &sv_undef;
1376 *++newsp = sv_mortalcopy(*++mark);
1378 curpm = newpm; /* Don't pop $1 et al till now */
1388 register CONTEXT *cx;
1391 if (op->op_flags & OPf_SPECIAL) {
1392 cxix = dopoptoloop(cxstack_ix);
1394 DIE("Can't \"next\" outside a block");
1397 cxix = dopoptolabel(cPVOP->op_pv);
1399 DIE("Label not found for \"next %s\"", cPVOP->op_pv);
1401 if (cxix < cxstack_ix)
1405 oldsave = scopestack[scopestack_ix - 1];
1406 LEAVE_SCOPE(oldsave);
1407 return cx->blk_loop.next_op;
1413 register CONTEXT *cx;
1416 if (op->op_flags & OPf_SPECIAL) {
1417 cxix = dopoptoloop(cxstack_ix);
1419 DIE("Can't \"redo\" outside a block");
1422 cxix = dopoptolabel(cPVOP->op_pv);
1424 DIE("Label not found for \"redo %s\"", cPVOP->op_pv);
1426 if (cxix < cxstack_ix)
1430 oldsave = scopestack[scopestack_ix - 1];
1431 LEAVE_SCOPE(oldsave);
1432 return cx->blk_loop.redo_op;
1435 static OP* lastgotoprobe;
1438 dofindlabel(op,label,opstack)
1446 if (op->op_type == OP_LEAVE ||
1447 op->op_type == OP_SCOPE ||
1448 op->op_type == OP_LEAVELOOP ||
1449 op->op_type == OP_LEAVETRY)
1450 *ops++ = cUNOP->op_first;
1452 if (op->op_flags & OPf_KIDS) {
1453 /* First try all the kids at this level, since that's likeliest. */
1454 for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) {
1455 if ((kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) &&
1456 kCOP->cop_label && strEQ(kCOP->cop_label, label))
1459 for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) {
1460 if (kid == lastgotoprobe)
1462 if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) {
1463 if (ops > opstack &&
1464 (ops[-1]->op_type == OP_NEXTSTATE ||
1465 ops[-1]->op_type == OP_DBSTATE))
1470 if (op = dofindlabel(kid,label,ops))
1480 return pp_goto(ARGS);
1489 register CONTEXT *cx;
1492 int do_dump = (op->op_type == OP_DUMP);
1495 if (op->op_flags & OPf_STACKED) {
1498 /* This egregious kludge implements goto &subroutine */
1499 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) {
1501 register CONTEXT *cx;
1502 CV* cv = (CV*)SvRV(sv);
1507 /* First do some returnish stuff. */
1508 cxix = dopoptosub(cxstack_ix);
1510 DIE("Can't goto subroutine outside a subroutine");
1511 if (cxix < cxstack_ix)
1515 if (cx->blk_sub.hasargs) { /* put @_ back onto stack */
1516 AV* av = cx->blk_sub.argarray;
1518 items = AvFILL(av) + 1;
1519 Copy(AvARRAY(av), ++stack_sp, items, SV*);
1521 GvAV(defgv) = cx->blk_sub.savearray;
1525 if (!(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth))
1526 SvREFCNT_dec(cx->blk_sub.cv);
1527 oldsave = scopestack[scopestack_ix - 1];
1528 LEAVE_SCOPE(oldsave);
1530 /* Now do some callish stuff. */
1533 if (CvOLDSTYLE(cv)) {
1538 items = (*(I32(*)_((int,int,int)))CvXSUB(cv))(
1539 CvXSUBANY(cv).any_i32,
1540 mark - stack_base + 1,
1542 sp = stack_base + items;
1545 (void)(*CvXSUB(cv))(cv);
1548 return pop_return();
1551 AV* padlist = CvPADLIST(cv);
1552 SV** svp = AvARRAY(padlist);
1553 cx->blk_sub.cv = cv;
1554 cx->blk_sub.olddepth = CvDEPTH(cv);
1556 if (CvDEPTH(cv) < 2)
1557 (void)SvREFCNT_inc(cv);
1558 else { /* save temporaries on recursion? */
1559 if (CvDEPTH(cv) == 100 && dowarn)
1560 warn("Deep recursion on subroutine \"%s\"",
1562 if (CvDEPTH(cv) > AvFILL(padlist)) {
1563 AV *newpad = newAV();
1564 I32 ix = AvFILL((AV*)svp[1]);
1565 svp = AvARRAY(svp[0]);
1567 if (svp[ix] != &sv_undef) {
1568 char *name = SvPVX(svp[ix]); /* XXX */
1570 av_store(newpad, ix--, sv = (SV*)newAV());
1571 else if (*name == '%')
1572 av_store(newpad, ix--, sv = (SV*)newHV());
1574 av_store(newpad, ix--, sv = NEWSV(0,0));
1578 av_store(newpad, ix--, sv = NEWSV(0,0));
1582 if (cx->blk_sub.hasargs) {
1585 av_store(newpad, 0, (SV*)av);
1586 AvFLAGS(av) = AVf_REIFY;
1588 av_store(padlist, CvDEPTH(cv), (SV*)newpad);
1589 AvFILL(padlist) = CvDEPTH(cv);
1590 svp = AvARRAY(padlist);
1594 curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
1595 if (cx->blk_sub.hasargs) {
1596 AV* av = (AV*)curpad[0];
1599 cx->blk_sub.savearray = GvAV(defgv);
1600 cx->blk_sub.argarray = av;
1601 GvAV(defgv) = cx->blk_sub.argarray;
1604 if (items >= AvMAX(av) + 1) {
1606 if (AvARRAY(av) != ary) {
1607 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
1608 SvPVX(av) = (char*)ary;
1610 if (items >= AvMAX(av) + 1) {
1611 AvMAX(av) = items - 1;
1612 Renew(ary,items+1,SV*);
1614 SvPVX(av) = (char*)ary;
1617 Copy(mark,AvARRAY(av),items,SV*);
1618 AvFILL(av) = items - 1;
1626 RETURNOP(CvSTART(cv));
1630 label = SvPV(sv,na);
1632 else if (op->op_flags & OPf_SPECIAL) {
1634 DIE("goto must have label");
1637 label = cPVOP->op_pv;
1639 if (label && *label) {
1646 for (ix = cxstack_ix; ix >= 0; ix--) {
1648 switch (cx->cx_type) {
1650 gotoprobe = CvROOT(cx->blk_sub.cv);
1653 gotoprobe = eval_root; /* XXX not good for nested eval */
1656 gotoprobe = cx->blk_oldcop->op_sibling;
1662 gotoprobe = cx->blk_oldcop->op_sibling;
1664 gotoprobe = main_root;
1670 gotoprobe = main_root;
1673 retop = dofindlabel(gotoprobe, label, enterops);
1676 lastgotoprobe = gotoprobe;
1679 DIE("Can't find label %s", label);
1681 /* pop unwanted frames */
1683 if (ix < cxstack_ix) {
1690 oldsave = scopestack[scopestack_ix];
1691 LEAVE_SCOPE(oldsave);
1694 /* push wanted frames */
1698 for (ix = 0 + (gotoprobe == main_root); enterops[ix]; ix++) {
1712 restartop = 0; /* hmm, must be GNU unexec().. */
1737 double value = SvNVx(GvSV(cCOP->cop_gv));
1738 register I32 match = I_32(value);
1741 if (((double)match) > value)
1742 --match; /* was fractional--truncate other way */
1744 match -= cCOP->uop.scop.scop_offset;
1747 else if (match > cCOP->uop.scop.scop_max)
1748 match = cCOP->uop.scop.scop_max;
1749 op = cCOP->uop.scop.scop_next[match];
1759 op = op->op_next; /* can't assume anything */
1761 match = *(SvPVx(GvSV(cCOP->cop_gv), na)) & 255;
1762 match -= cCOP->uop.scop.scop_offset;
1765 else if (match > cCOP->uop.scop.scop_max)
1766 match = cCOP->uop.scop.scop_max;
1767 op = cCOP->uop.scop.scop_next[match];
1776 save_lines(array, sv)
1780 register char *s = SvPVX(sv);
1781 register char *send = SvPVX(sv) + SvCUR(sv);
1783 register I32 line = 1;
1785 while (s && s < send) {
1786 SV *tmpstr = NEWSV(85,0);
1788 sv_upgrade(tmpstr, SVt_PVMG);
1789 t = strchr(s, '\n');
1795 sv_setpvn(tmpstr, s, t - s);
1796 av_store(array, line++, tmpstr);
1811 /* set up a scratch pad */
1816 SAVESPTR(comppad_name);
1817 SAVEINT(comppad_name_fill);
1818 SAVEINT(min_intro_pending);
1819 SAVEINT(max_intro_pending);
1821 comppad_name = newAV();
1822 comppad_name_fill = 0;
1823 min_intro_pending = 0;
1824 av_push(comppad, Nullsv);
1825 curpad = AvARRAY(comppad);
1828 /* make sure we compile in the right package */
1830 newstash = curcop->cop_stash;
1831 if (curstash != newstash) {
1833 curstash = newstash;
1837 SAVEFREESV(beginav);
1839 /* try to compile it */
1843 curcop = &compiling;
1844 curcop->cop_arybase = 0;
1849 sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
1850 if (yyparse() || error_count || !eval_root) {
1866 if (optype == OP_REQUIRE)
1867 DIE("%s", SvPVx(GvSV(gv_fetchpv("@",TRUE, SVt_PV)), na));
1871 rspara = (nrslen == 2);
1877 rspara = (nrslen == 2);
1878 compiling.cop_line = 0;
1879 SAVEFREESV(comppad);
1880 SAVEFREESV(comppad_name);
1881 SAVEFREEOP(eval_root);
1882 if (gimme & G_ARRAY)
1887 DEBUG_x(dump_eval());
1889 /* compiled okay, so do it */
1891 RETURNOP(eval_start);
1897 register CONTEXT *cx;
1902 I32 gimme = G_SCALAR;
1906 if (SvNIOK(sv) && !SvPOKp(sv)) {
1907 if (atof(patchlevel) + 0.000999 < SvNV(sv))
1908 DIE("Perl %3.3f required--this is only version %s, stopped",
1909 SvNV(sv),patchlevel);
1912 name = SvPV(sv, na);
1914 DIE("Null filename used");
1915 if (op->op_type == OP_REQUIRE &&
1916 (svp = hv_fetch(GvHVn(incgv), name, SvCUR(sv), 0)) &&
1920 /* prepare to compile file */
1922 tmpname = savepv(name);
1923 if (*tmpname == '/' ||
1925 (tmpname[1] == '/' ||
1926 (tmpname[1] == '.' && tmpname[2] == '/'))))
1928 tryrsfp = fopen(tmpname,"r");
1931 AV *ar = GvAVn(incgv);
1934 for (i = 0; i <= AvFILL(ar); i++) {
1935 (void)sprintf(buf, "%s/%s",
1936 SvPVx(*av_fetch(ar, i, TRUE), na), name);
1937 tryrsfp = fopen(buf, "r");
1941 if (*s == '.' && s[1] == '/')
1944 tmpname = savepv(s);
1949 SAVESPTR(compiling.cop_filegv);
1950 compiling.cop_filegv = gv_fetchfile(tmpname);
1954 if (op->op_type == OP_REQUIRE) {
1955 sprintf(tokenbuf,"Can't locate %s in @INC", name);
1956 if (instr(tokenbuf,".h "))
1957 strcat(tokenbuf," (change .h to .ph maybe?)");
1958 if (instr(tokenbuf,".ph "))
1959 strcat(tokenbuf," (did you run h2ph?)");
1966 /* Assume success here to prevent recursive requirement. */
1967 (void)hv_store(GvHVn(incgv), name, strlen(name),
1968 newSVsv(GvSV(compiling.cop_filegv)), 0 );
1972 lex_start(sv_2mortal(newSVpv("",0)));
1974 name = savepv(name);
1979 /* switch to eval mode */
1981 push_return(op->op_next);
1982 PUSHBLOCK(cx, CXt_EVAL, SP);
1983 PUSHEVAL(cx, name, compiling.cop_filegv);
1985 compiling.cop_line = 0;
1988 return doeval(G_SCALAR);
1993 return pp_require(ARGS);
1999 register CONTEXT *cx;
2005 if (!SvPV(sv,len) || !len)
2012 /* switch to eval mode */
2014 sprintf(tmpbuf, "_<(eval %d)", ++evalseq);
2015 compiling.cop_filegv = gv_fetchfile(tmpbuf+2);
2016 compiling.cop_line = 1;
2017 SAVEDELETE(defstash, savepv(tmpbuf), strlen(tmpbuf));
2019 hints = op->op_targ;
2021 push_return(op->op_next);
2022 PUSHBLOCK(cx, CXt_EVAL, SP);
2023 PUSHEVAL(cx, 0, compiling.cop_filegv);
2025 /* prepare to compile string */
2027 if (perldb && curstash != debstash)
2028 save_lines(GvAV(compiling.cop_filegv), linestr);
2030 return doeval(gimme);
2040 register CONTEXT *cx;
2046 retop = pop_return();
2048 if (gimme == G_SCALAR) {
2049 if (op->op_private & OPpLEAVE_VOID)
2054 if (SvFLAGS(TOPs) & SVs_TEMP)
2057 *MARK = sv_mortalcopy(TOPs);
2067 for (mark = newsp + 1; mark <= SP; mark++)
2068 if (!(SvFLAGS(TOPs) & SVs_TEMP))
2069 *mark = sv_mortalcopy(*mark);
2070 /* in case LEAVE wipes old return values */
2072 curpm = newpm; /* Don't pop $1 et al till now */
2074 if (optype != OP_ENTEREVAL) {
2075 char *name = cx->blk_eval.old_name;
2077 if (!(gimme == G_SCALAR ? SvTRUE(*sp) : sp > newsp)) {
2078 /* Unassume the success we assumed earlier. */
2079 (void)hv_delete(GvHVn(incgv), name, strlen(name));
2081 if (optype == OP_REQUIRE)
2082 retop = die("%s did not return a true value", name);
2088 sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
2097 SP = do_eval(st[1], OP_EVAL, curcop->cop_stash, TRUE,
2100 SvREFCNT_dec(cSVOP->op_sv);
2101 op[1].arg_ptr.arg_cmd = eval_root;
2102 op[1].op_type = (A_CMD|A_DONT);
2103 op[0].op_type = OP_TRY;
2112 register CONTEXT *cx;
2118 push_return(cLOGOP->op_other->op_next);
2119 PUSHBLOCK(cx, CXt_EVAL, SP);
2121 eval_root = op; /* Only needed so that goto works right. */
2124 sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
2135 register CONTEXT *cx;
2142 if (gimme == G_SCALAR) {
2143 if (op->op_private & OPpLEAVE_VOID)
2148 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
2151 *MARK = sv_mortalcopy(TOPs);
2161 for (mark = newsp + 1; mark <= SP; mark++)
2162 if (!(SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)))
2163 *mark = sv_mortalcopy(*mark);
2164 /* in case LEAVE wipes old return values */
2166 curpm = newpm; /* Don't pop $1 et al till now */
2169 sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
2178 register char *s = SvPV_force(sv, len);
2179 register char *send = s + len;
2180 register char *base;
2181 register I32 skipspaces = 0;
2184 bool postspace = FALSE;
2191 New(804, fops, (send - s)*3+2, U16); /* Almost certainly too long... */
2196 *fpc++ = FF_LINEMARK;
2197 noblank = repeat = FALSE;
2215 case ' ': case '\t':
2228 *fpc++ = FF_LITERAL;
2235 *fpc++ = skipspaces;
2239 *fpc++ = FF_NEWLINE;
2243 arg = fpc - linepc + 1;
2250 *fpc++ = FF_LINEMARK;
2251 noblank = repeat = FALSE;
2260 ischop = s[-1] == '^';
2266 arg = (s - base) - 1;
2268 *fpc++ = FF_LITERAL;
2277 *fpc++ = FF_LINEGLOB;
2279 else if (*s == '#' || (*s == '.' && s[1] == '#')) {
2280 arg = ischop ? 512 : 0;
2290 arg |= 256 + (s - f);
2292 *fpc++ = s - base; /* fieldsize for FETCH */
2293 *fpc++ = FF_DECIMAL;
2298 bool ismore = FALSE;
2301 while (*++s == '>') ;
2302 prespace = FF_SPACE;
2304 else if (*s == '|') {
2305 while (*++s == '|') ;
2306 prespace = FF_HALFSPACE;
2311 while (*++s == '<') ;
2314 if (*s == '.' && s[1] == '.' && s[2] == '.') {
2318 *fpc++ = s - base; /* fieldsize for FETCH */
2320 *fpc++ = ischop ? FF_CHECKCHOP : FF_CHECKNL;
2338 { /* need to jump to the next word */
2340 z = WORD_ALIGN - SvCUR(sv) % WORD_ALIGN;
2341 SvGROW(sv, SvCUR(sv) + z + arg * sizeof(U16) + 4);
2342 s = SvPVX(sv) + SvCUR(sv) + z;
2344 Copy(fops, s, arg, U16);