3 * Copyright (c) 1991-2002, 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.
20 #define PERL_IN_PP_CTL_C
24 #define WORD_ALIGN sizeof(U16)
27 #define DOCATCH(o) ((CATCH_GET == TRUE) ? docatch(o) : (o))
29 static I32 run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen);
37 cxix = dopoptosub(cxstack_ix);
41 switch (cxstack[cxix].blk_gimme) {
58 /* XXXX Should store the old value to allow for tie/overload - and
59 restore in regcomp, where marked with XXXX. */
67 register PMOP *pm = (PMOP*)cLOGOP->op_other;
71 MAGIC *mg = Null(MAGIC*);
75 /* prevent recompiling under /o and ithreads. */
76 #if defined(USE_ITHREADS)
77 if (pm->op_pmflags & PMf_KEEP && PM_GETRE(pm))
82 SV *sv = SvRV(tmpstr);
84 mg = mg_find(sv, PERL_MAGIC_qr);
87 regexp *re = (regexp *)mg->mg_obj;
88 ReREFCNT_dec(PM_GETRE(pm));
89 PM_SETRE(pm, ReREFCNT_inc(re));
92 t = SvPV(tmpstr, len);
94 /* Check against the last compiled regexp. */
95 if (!PM_GETRE(pm) || !PM_GETRE(pm)->precomp ||
96 PM_GETRE(pm)->prelen != (I32)len ||
97 memNE(PM_GETRE(pm)->precomp, t, len))
100 ReREFCNT_dec(PM_GETRE(pm));
101 PM_SETRE(pm, Null(REGEXP*)); /* crucial if regcomp aborts */
103 if (PL_op->op_flags & OPf_SPECIAL)
104 PL_reginterp_cnt = I32_MAX; /* Mark as safe. */
106 pm->op_pmflags = pm->op_pmpermflags; /* reset case sensitivity */
108 pm->op_pmdynflags |= PMdf_DYN_UTF8;
110 pm->op_pmdynflags &= ~PMdf_DYN_UTF8;
111 if (pm->op_pmdynflags & PMdf_UTF8)
112 t = (char*)bytes_to_utf8((U8*)t, &len);
114 PM_SETRE(pm, CALLREGCOMP(aTHX_ t, t + len, pm));
115 if (!DO_UTF8(tmpstr) && (pm->op_pmdynflags & PMdf_UTF8))
117 PL_reginterp_cnt = 0; /* XXXX Be extra paranoid - needed
118 inside tie/overload accessors. */
122 #ifndef INCOMPLETE_TAINTS
125 pm->op_pmdynflags |= PMdf_TAINTED;
127 pm->op_pmdynflags &= ~PMdf_TAINTED;
131 if (!PM_GETRE(pm)->prelen && PL_curpm)
133 else if (strEQ("\\s+", PM_GETRE(pm)->precomp))
134 pm->op_pmflags |= PMf_WHITE;
136 pm->op_pmflags &= ~PMf_WHITE;
138 /* XXX runtime compiled output needs to move to the pad */
139 if (pm->op_pmflags & PMf_KEEP) {
140 pm->op_private &= ~OPpRUNTIME; /* no point compiling again */
141 #if !defined(USE_ITHREADS)
142 /* XXX can't change the optree at runtime either */
143 cLOGOP->op_first->op_next = PL_op->op_next;
152 register PMOP *pm = (PMOP*) cLOGOP->op_other;
153 register PERL_CONTEXT *cx = &cxstack[cxstack_ix];
154 register SV *dstr = cx->sb_dstr;
155 register char *s = cx->sb_s;
156 register char *m = cx->sb_m;
157 char *orig = cx->sb_orig;
158 register REGEXP *rx = cx->sb_rx;
160 rxres_restore(&cx->sb_rxres, rx);
161 PL_reg_match_utf8 = SvUTF8(cx->sb_targ) ? 1 : 0;
163 if (cx->sb_iters++) {
164 I32 saviters = cx->sb_iters;
165 if (cx->sb_iters > cx->sb_maxiters)
166 DIE(aTHX_ "Substitution loop");
168 if (!(cx->sb_rxtainted & 2) && SvTAINTED(TOPs))
169 cx->sb_rxtainted |= 2;
170 sv_catsv(dstr, POPs);
173 if (cx->sb_once || !CALLREGEXEC(aTHX_ rx, s, cx->sb_strend, orig,
174 s == m, cx->sb_targ, NULL,
175 ((cx->sb_rflags & REXEC_COPY_STR)
176 ? (REXEC_IGNOREPOS|REXEC_NOT_FIRST)
177 : (REXEC_COPY_STR|REXEC_IGNOREPOS|REXEC_NOT_FIRST))))
179 SV *targ = cx->sb_targ;
181 sv_catpvn(dstr, s, cx->sb_strend - s);
182 cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
184 (void)SvOOK_off(targ);
185 Safefree(SvPVX(targ));
186 SvPVX(targ) = SvPVX(dstr);
187 SvCUR_set(targ, SvCUR(dstr));
188 SvLEN_set(targ, SvLEN(dstr));
194 TAINT_IF(cx->sb_rxtainted & 1);
195 PUSHs(sv_2mortal(newSViv((I32)cx->sb_iters - 1)));
197 (void)SvPOK_only_UTF8(targ);
198 TAINT_IF(cx->sb_rxtainted);
202 LEAVE_SCOPE(cx->sb_oldsave);
204 RETURNOP(pm->op_next);
206 cx->sb_iters = saviters;
208 if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) {
211 cx->sb_orig = orig = rx->subbeg;
213 cx->sb_strend = s + (cx->sb_strend - m);
215 cx->sb_m = m = rx->startp[0] + orig;
217 sv_catpvn(dstr, s, m-s);
218 cx->sb_s = rx->endp[0] + orig;
219 { /* Update the pos() information. */
220 SV *sv = cx->sb_targ;
223 if (SvTYPE(sv) < SVt_PVMG)
224 (void)SvUPGRADE(sv, SVt_PVMG);
225 if (!(mg = mg_find(sv, PERL_MAGIC_regex_global))) {
226 sv_magic(sv, Nullsv, PERL_MAGIC_regex_global, Nullch, 0);
227 mg = mg_find(sv, PERL_MAGIC_regex_global);
234 cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
235 rxres_save(&cx->sb_rxres, rx);
236 RETURNOP(pm->op_pmreplstart);
240 Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx)
245 if (!p || p[1] < rx->nparens) {
246 i = 6 + rx->nparens * 2;
254 *p++ = PTR2UV(RX_MATCH_COPIED(rx) ? rx->subbeg : Nullch);
255 RX_MATCH_COPIED_off(rx);
259 *p++ = PTR2UV(rx->subbeg);
260 *p++ = (UV)rx->sublen;
261 for (i = 0; i <= rx->nparens; ++i) {
262 *p++ = (UV)rx->startp[i];
263 *p++ = (UV)rx->endp[i];
268 Perl_rxres_restore(pTHX_ void **rsp, REGEXP *rx)
273 if (RX_MATCH_COPIED(rx))
274 Safefree(rx->subbeg);
275 RX_MATCH_COPIED_set(rx, *p);
280 rx->subbeg = INT2PTR(char*,*p++);
281 rx->sublen = (I32)(*p++);
282 for (i = 0; i <= rx->nparens; ++i) {
283 rx->startp[i] = (I32)(*p++);
284 rx->endp[i] = (I32)(*p++);
289 Perl_rxres_free(pTHX_ void **rsp)
294 Safefree(INT2PTR(char*,*p));
302 dSP; dMARK; dORIGMARK;
303 register SV *tmpForm = *++MARK;
310 register SV *sv = Nullsv;
315 bool chopspace = (strchr(PL_chopset, ' ') != Nullch);
316 char *chophere = Nullch;
317 char *linemark = Nullch;
319 bool gotsome = FALSE;
321 STRLEN fudge = SvCUR(tmpForm) * (IN_BYTES ? 1 : 3) + 1;
322 bool item_is_utf = FALSE;
324 if (!SvMAGICAL(tmpForm) || !SvCOMPILED(tmpForm)) {
325 if (SvREADONLY(tmpForm)) {
326 SvREADONLY_off(tmpForm);
327 doparseform(tmpForm);
328 SvREADONLY_on(tmpForm);
331 doparseform(tmpForm);
334 SvPV_force(PL_formtarget, len);
335 t = SvGROW(PL_formtarget, len + fudge + 1); /* XXX SvCUR bad */
337 f = SvPV(tmpForm, len);
338 /* need to jump to the next word */
339 s = f + len + WORD_ALIGN - SvCUR(tmpForm) % WORD_ALIGN;
348 case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break;
349 case FF_BLANK: arg = fpc[1]; name = "BLANK"; break;
350 case FF_SKIP: arg = fpc[1]; name = "SKIP"; break;
351 case FF_FETCH: arg = fpc[1]; name = "FETCH"; break;
352 case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break;
354 case FF_CHECKNL: name = "CHECKNL"; break;
355 case FF_CHECKCHOP: name = "CHECKCHOP"; break;
356 case FF_SPACE: name = "SPACE"; break;
357 case FF_HALFSPACE: name = "HALFSPACE"; break;
358 case FF_ITEM: name = "ITEM"; break;
359 case FF_CHOP: name = "CHOP"; break;
360 case FF_LINEGLOB: name = "LINEGLOB"; break;
361 case FF_NEWLINE: name = "NEWLINE"; break;
362 case FF_MORE: name = "MORE"; break;
363 case FF_LINEMARK: name = "LINEMARK"; break;
364 case FF_END: name = "END"; break;
365 case FF_0DECIMAL: name = "0DECIMAL"; break;
368 PerlIO_printf(Perl_debug_log, "%-16s%ld\n", name, (long) arg);
370 PerlIO_printf(Perl_debug_log, "%-16s\n", name);
398 if (ckWARN(WARN_SYNTAX))
399 Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Not enough format arguments");
404 item = s = SvPV(sv, len);
407 itemsize = sv_len_utf8(sv);
408 if (itemsize != (I32)len) {
410 if (itemsize > fieldsize) {
411 itemsize = fieldsize;
412 itembytes = itemsize;
413 sv_pos_u2b(sv, &itembytes, 0);
417 send = chophere = s + itembytes;
427 sv_pos_b2u(sv, &itemsize);
432 if (itemsize > fieldsize)
433 itemsize = fieldsize;
434 send = chophere = s + itemsize;
446 item = s = SvPV(sv, len);
449 itemsize = sv_len_utf8(sv);
450 if (itemsize != (I32)len) {
452 if (itemsize <= fieldsize) {
453 send = chophere = s + itemsize;
464 itemsize = fieldsize;
465 itembytes = itemsize;
466 sv_pos_u2b(sv, &itembytes, 0);
467 send = chophere = s + itembytes;
468 while (s < send || (s == send && isSPACE(*s))) {
478 if (strchr(PL_chopset, *s))
483 itemsize = chophere - item;
484 sv_pos_b2u(sv, &itemsize);
491 if (itemsize <= fieldsize) {
492 send = chophere = s + itemsize;
503 itemsize = fieldsize;
504 send = chophere = s + itemsize;
505 while (s < send || (s == send && isSPACE(*s))) {
515 if (strchr(PL_chopset, *s))
520 itemsize = chophere - item;
525 arg = fieldsize - itemsize;
534 arg = fieldsize - itemsize;
548 if (UTF8_IS_CONTINUED(*s)) {
549 STRLEN skip = UTF8SKIP(s);
566 if ( !((*t++ = *s++) & ~31) )
574 int ch = *t++ = *s++;
577 if ( !((*t++ = *s++) & ~31) )
586 while (*s && isSPACE(*s))
593 item = s = SvPV(sv, len);
595 item_is_utf = FALSE; /* XXX is this correct? */
607 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
608 sv_catpvn(PL_formtarget, item, itemsize);
609 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
610 t = SvPVX(PL_formtarget) + SvCUR(PL_formtarget);
615 /* If the field is marked with ^ and the value is undefined,
618 if ((arg & 512) && !SvOK(sv)) {
626 /* Formats aren't yet marked for locales, so assume "yes". */
628 STORE_NUMERIC_STANDARD_SET_LOCAL();
629 #if defined(USE_LONG_DOUBLE)
631 sprintf(t, "%#*.*" PERL_PRIfldbl,
632 (int) fieldsize, (int) arg & 255, value);
634 sprintf(t, "%*.0" PERL_PRIfldbl, (int) fieldsize, value);
639 (int) fieldsize, (int) arg & 255, value);
642 (int) fieldsize, value);
645 RESTORE_NUMERIC_STANDARD();
651 /* If the field is marked with ^ and the value is undefined,
654 if ((arg & 512) && !SvOK(sv)) {
662 /* Formats aren't yet marked for locales, so assume "yes". */
664 STORE_NUMERIC_STANDARD_SET_LOCAL();
665 #if defined(USE_LONG_DOUBLE)
667 sprintf(t, "%#0*.*" PERL_PRIfldbl,
668 (int) fieldsize, (int) arg & 255, value);
669 /* is this legal? I don't have long doubles */
671 sprintf(t, "%0*.0" PERL_PRIfldbl, (int) fieldsize, value);
675 sprintf(t, "%#0*.*f",
676 (int) fieldsize, (int) arg & 255, value);
679 (int) fieldsize, value);
682 RESTORE_NUMERIC_STANDARD();
689 while (t-- > linemark && *t == ' ') ;
697 if (arg) { /* repeat until fields exhausted? */
699 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
700 lines += FmLINES(PL_formtarget);
703 if (strnEQ(linemark, linemark - arg, arg))
704 DIE(aTHX_ "Runaway format");
706 FmLINES(PL_formtarget) = lines;
708 RETURNOP(cLISTOP->op_first);
721 while (*s && isSPACE(*s) && s < send)
725 arg = fieldsize - itemsize;
732 if (strnEQ(s," ",3)) {
733 while (s > SvPVX(PL_formtarget) && isSPACE(s[-1]))
744 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
745 FmLINES(PL_formtarget) += lines;
757 if (PL_stack_base + *PL_markstack_ptr == SP) {
759 if (GIMME_V == G_SCALAR)
760 XPUSHs(sv_2mortal(newSViv(0)));
761 RETURNOP(PL_op->op_next->op_next);
763 PL_stack_sp = PL_stack_base + *PL_markstack_ptr + 1;
764 pp_pushmark(); /* push dst */
765 pp_pushmark(); /* push src */
766 ENTER; /* enter outer scope */
769 /* SAVE_DEFSV does *not* suffice here for USE_5005THREADS */
771 ENTER; /* enter inner scope */
774 src = PL_stack_base[*PL_markstack_ptr];
779 if (PL_op->op_type == OP_MAPSTART)
780 pp_pushmark(); /* push top */
781 return ((LOGOP*)PL_op->op_next)->op_other;
786 DIE(aTHX_ "panic: mapstart"); /* uses grepstart */
792 I32 items = (SP - PL_stack_base) - *PL_markstack_ptr; /* how many new items */
798 /* first, move source pointer to the next item in the source list */
799 ++PL_markstack_ptr[-1];
801 /* if there are new items, push them into the destination list */
803 /* might need to make room back there first */
804 if (items > PL_markstack_ptr[-1] - PL_markstack_ptr[-2]) {
805 /* XXX this implementation is very pessimal because the stack
806 * is repeatedly extended for every set of items. Is possible
807 * to do this without any stack extension or copying at all
808 * by maintaining a separate list over which the map iterates
809 * (like foreach does). --gsar */
811 /* everything in the stack after the destination list moves
812 * towards the end the stack by the amount of room needed */
813 shift = items - (PL_markstack_ptr[-1] - PL_markstack_ptr[-2]);
815 /* items to shift up (accounting for the moved source pointer) */
816 count = (SP - PL_stack_base) - (PL_markstack_ptr[-1] - 1);
818 /* This optimization is by Ben Tilly and it does
819 * things differently from what Sarathy (gsar)
820 * is describing. The downside of this optimization is
821 * that leaves "holes" (uninitialized and hopefully unused areas)
822 * to the Perl stack, but on the other hand this
823 * shouldn't be a problem. If Sarathy's idea gets
824 * implemented, this optimization should become
825 * irrelevant. --jhi */
827 shift = count; /* Avoid shifting too often --Ben Tilly */
832 PL_markstack_ptr[-1] += shift;
833 *PL_markstack_ptr += shift;
837 /* copy the new items down to the destination list */
838 dst = PL_stack_base + (PL_markstack_ptr[-2] += items) - 1;
840 *dst-- = SvTEMP(TOPs) ? POPs : sv_mortalcopy(POPs);
842 LEAVE; /* exit inner scope */
845 if (PL_markstack_ptr[-1] > *PL_markstack_ptr) {
848 (void)POPMARK; /* pop top */
849 LEAVE; /* exit outer scope */
850 (void)POPMARK; /* pop src */
851 items = --*PL_markstack_ptr - PL_markstack_ptr[-1];
852 (void)POPMARK; /* pop dst */
853 SP = PL_stack_base + POPMARK; /* pop original mark */
854 if (gimme == G_SCALAR) {
858 else if (gimme == G_ARRAY)
865 ENTER; /* enter inner scope */
868 /* set $_ to the new source item */
869 src = PL_stack_base[PL_markstack_ptr[-1]];
873 RETURNOP(cLOGOP->op_other);
881 if (GIMME == G_ARRAY)
883 if (SvTRUEx(PAD_SV(PL_op->op_targ)))
884 return cLOGOP->op_other;
893 if (GIMME == G_ARRAY) {
894 RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
898 SV *targ = PAD_SV(PL_op->op_targ);
901 if (PL_op->op_private & OPpFLIP_LINENUM) {
902 if (GvIO(PL_last_in_gv)) {
903 flip = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
906 GV *gv = gv_fetchpv(".", TRUE, SVt_PV);
907 if (gv && GvSV(gv)) flip = SvIV(sv) == SvIV(GvSV(gv));
913 sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1);
914 if (PL_op->op_flags & OPf_SPECIAL) {
922 RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
935 if (GIMME == G_ARRAY) {
941 if (SvGMAGICAL(left))
943 if (SvGMAGICAL(right))
946 /* This code tries to decide if "$left .. $right" should use the
947 magical string increment, or if the range is numeric (we make
948 an exception for .."0" [#18165]). AMS 20021031. */
950 if (SvNIOKp(left) || !SvPOKp(left) ||
951 SvNIOKp(right) || !SvPOKp(right) ||
952 (looks_like_number(left) && *SvPVX(left) != '0' &&
953 looks_like_number(right)))
955 if (SvNV(left) < IV_MIN || SvNV(right) > IV_MAX)
956 DIE(aTHX_ "Range iterator outside integer range");
967 sv = sv_2mortal(newSViv(i++));
972 SV *final = sv_mortalcopy(right);
974 char *tmps = SvPV(final, len);
976 sv = sv_mortalcopy(left);
978 while (!SvNIOKp(sv) && SvCUR(sv) <= len) {
980 if (strEQ(SvPVX(sv),tmps))
982 sv = sv_2mortal(newSVsv(sv));
989 SV *targ = PAD_SV(cUNOP->op_first->op_targ);
993 if (PL_op->op_private & OPpFLIP_LINENUM) {
994 if (GvIO(PL_last_in_gv)) {
995 flop = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
998 GV *gv = gv_fetchpv(".", TRUE, SVt_PV);
999 if (gv && GvSV(gv)) flop = SvIV(sv) == SvIV(GvSV(gv));
1007 sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0);
1008 sv_catpv(targ, "E0");
1019 S_dopoptolabel(pTHX_ char *label)
1022 register PERL_CONTEXT *cx;
1024 for (i = cxstack_ix; i >= 0; i--) {
1026 switch (CxTYPE(cx)) {
1028 if (ckWARN(WARN_EXITING))
1029 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting substitution via %s",
1033 if (ckWARN(WARN_EXITING))
1034 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting subroutine via %s",
1038 if (ckWARN(WARN_EXITING))
1039 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting format via %s",
1043 if (ckWARN(WARN_EXITING))
1044 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting eval via %s",
1048 if (ckWARN(WARN_EXITING))
1049 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting pseudo-block via %s",
1053 if (!cx->blk_loop.label ||
1054 strNE(label, cx->blk_loop.label) ) {
1055 DEBUG_l(Perl_deb(aTHX_ "(Skipping label #%ld %s)\n",
1056 (long)i, cx->blk_loop.label));
1059 DEBUG_l( Perl_deb(aTHX_ "(Found label #%ld %s)\n", (long)i, label));
1067 Perl_dowantarray(pTHX)
1069 I32 gimme = block_gimme();
1070 return (gimme == G_VOID) ? G_SCALAR : gimme;
1074 Perl_block_gimme(pTHX)
1078 cxix = dopoptosub(cxstack_ix);
1082 switch (cxstack[cxix].blk_gimme) {
1090 Perl_croak(aTHX_ "panic: bad gimme: %d\n", cxstack[cxix].blk_gimme);
1097 Perl_is_lvalue_sub(pTHX)
1101 cxix = dopoptosub(cxstack_ix);
1102 assert(cxix >= 0); /* We should only be called from inside subs */
1104 if (cxstack[cxix].blk_sub.lval && CvLVALUE(cxstack[cxix].blk_sub.cv))
1105 return cxstack[cxix].blk_sub.lval;
1111 S_dopoptosub(pTHX_ I32 startingblock)
1113 return dopoptosub_at(cxstack, startingblock);
1117 S_dopoptosub_at(pTHX_ PERL_CONTEXT *cxstk, I32 startingblock)
1120 register PERL_CONTEXT *cx;
1121 for (i = startingblock; i >= 0; i--) {
1123 switch (CxTYPE(cx)) {
1129 DEBUG_l( Perl_deb(aTHX_ "(Found sub #%ld)\n", (long)i));
1137 S_dopoptoeval(pTHX_ I32 startingblock)
1140 register PERL_CONTEXT *cx;
1141 for (i = startingblock; i >= 0; i--) {
1143 switch (CxTYPE(cx)) {
1147 DEBUG_l( Perl_deb(aTHX_ "(Found eval #%ld)\n", (long)i));
1155 S_dopoptoloop(pTHX_ I32 startingblock)
1158 register PERL_CONTEXT *cx;
1159 for (i = startingblock; i >= 0; i--) {
1161 switch (CxTYPE(cx)) {
1163 if (ckWARN(WARN_EXITING))
1164 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting substitution via %s",
1168 if (ckWARN(WARN_EXITING))
1169 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting subroutine via %s",
1173 if (ckWARN(WARN_EXITING))
1174 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting format via %s",
1178 if (ckWARN(WARN_EXITING))
1179 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting eval via %s",
1183 if (ckWARN(WARN_EXITING))
1184 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting pseudo-block via %s",
1188 DEBUG_l( Perl_deb(aTHX_ "(Found loop #%ld)\n", (long)i));
1196 Perl_dounwind(pTHX_ I32 cxix)
1198 register PERL_CONTEXT *cx;
1201 while (cxstack_ix > cxix) {
1203 cx = &cxstack[cxstack_ix];
1204 DEBUG_l(PerlIO_printf(Perl_debug_log, "Unwinding block %ld, type %s\n",
1205 (long) cxstack_ix, PL_block_type[CxTYPE(cx)]));
1206 /* Note: we don't need to restore the base context info till the end. */
1207 switch (CxTYPE(cx)) {
1210 continue; /* not break */
1232 Perl_qerror(pTHX_ SV *err)
1235 sv_catsv(ERRSV, err);
1237 sv_catsv(PL_errors, err);
1239 Perl_warn(aTHX_ "%"SVf, err);
1244 Perl_die_where(pTHX_ char *message, STRLEN msglen)
1252 register PERL_CONTEXT *cx;
1257 if (PL_in_eval & EVAL_KEEPERR) {
1258 static char prefix[] = "\t(in cleanup) ";
1263 else if (SvCUR(err) >= sizeof(prefix)+msglen-1) {
1266 if (*e != *message || strNE(e,message))
1270 SvGROW(err, SvCUR(err)+sizeof(prefix)+msglen);
1271 sv_catpvn(err, prefix, sizeof(prefix)-1);
1272 sv_catpvn(err, message, msglen);
1273 if (ckWARN(WARN_MISC)) {
1274 STRLEN start = SvCUR(err)-msglen-sizeof(prefix)+1;
1275 Perl_warner(aTHX_ packWARN(WARN_MISC), SvPVX(err)+start);
1280 sv_setpvn(ERRSV, message, msglen);
1284 message = SvPVx(ERRSV, msglen);
1286 while ((cxix = dopoptoeval(cxstack_ix)) < 0
1287 && PL_curstackinfo->si_prev)
1296 if (cxix < cxstack_ix)
1299 POPBLOCK(cx,PL_curpm);
1300 if (CxTYPE(cx) != CXt_EVAL) {
1301 PerlIO_write(Perl_error_log, "panic: die ", 11);
1302 PerlIO_write(Perl_error_log, message, msglen);
1307 if (gimme == G_SCALAR)
1308 *++newsp = &PL_sv_undef;
1309 PL_stack_sp = newsp;
1313 /* LEAVE could clobber PL_curcop (see save_re_context())
1314 * XXX it might be better to find a way to avoid messing with
1315 * PL_curcop in save_re_context() instead, but this is a more
1316 * minimal fix --GSAR */
1317 PL_curcop = cx->blk_oldcop;
1319 if (optype == OP_REQUIRE) {
1320 char* msg = SvPVx(ERRSV, n_a);
1321 DIE(aTHX_ "%sCompilation failed in require",
1322 *msg ? msg : "Unknown error\n");
1324 return pop_return();
1328 message = SvPVx(ERRSV, msglen);
1330 /* if STDERR is tied, print to it instead */
1331 if (PL_stderrgv && (io = GvIOp(PL_stderrgv))
1332 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
1335 XPUSHs(SvTIED_obj((SV*)io, mg));
1336 XPUSHs(sv_2mortal(newSVpvn(message, msglen)));
1338 call_method("PRINT", G_SCALAR);
1343 /* SFIO can really mess with your errno */
1346 PerlIO *serr = Perl_error_log;
1348 PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen);
1349 (void)PerlIO_flush(serr);
1362 if (SvTRUE(left) != SvTRUE(right))
1374 RETURNOP(cLOGOP->op_other);
1383 RETURNOP(cLOGOP->op_other);
1392 if (!sv || !SvANY(sv)) {
1393 RETURNOP(cLOGOP->op_other);
1396 switch (SvTYPE(sv)) {
1398 if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied)))
1402 if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied)))
1406 if (CvROOT(sv) || CvXSUB(sv))
1416 RETURNOP(cLOGOP->op_other);
1422 register I32 cxix = dopoptosub(cxstack_ix);
1423 register PERL_CONTEXT *cx;
1424 register PERL_CONTEXT *ccstack = cxstack;
1425 PERL_SI *top_si = PL_curstackinfo;
1436 /* we may be in a higher stacklevel, so dig down deeper */
1437 while (cxix < 0 && top_si->si_type != PERLSI_MAIN) {
1438 top_si = top_si->si_prev;
1439 ccstack = top_si->si_cxstack;
1440 cxix = dopoptosub_at(ccstack, top_si->si_cxix);
1443 if (GIMME != G_ARRAY) {
1449 if (PL_DBsub && cxix >= 0 &&
1450 ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub))
1454 cxix = dopoptosub_at(ccstack, cxix - 1);
1457 cx = &ccstack[cxix];
1458 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
1459 dbcxix = dopoptosub_at(ccstack, cxix - 1);
1460 /* We expect that ccstack[dbcxix] is CXt_SUB, anyway, the
1461 field below is defined for any cx. */
1462 if (PL_DBsub && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub))
1463 cx = &ccstack[dbcxix];
1466 stashname = CopSTASHPV(cx->blk_oldcop);
1467 if (GIMME != G_ARRAY) {
1470 PUSHs(&PL_sv_undef);
1473 sv_setpv(TARG, stashname);
1482 PUSHs(&PL_sv_undef);
1484 PUSHs(sv_2mortal(newSVpv(stashname, 0)));
1485 PUSHs(sv_2mortal(newSVpv(OutCopFILE(cx->blk_oldcop), 0)));
1486 PUSHs(sv_2mortal(newSViv((I32)CopLINE(cx->blk_oldcop))));
1489 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
1490 GV *cvgv = CvGV(ccstack[cxix].blk_sub.cv);
1491 /* So is ccstack[dbcxix]. */
1494 gv_efullname3(sv, cvgv, Nullch);
1495 PUSHs(sv_2mortal(sv));
1496 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1499 PUSHs(sv_2mortal(newSVpvn("(unknown)",9)));
1500 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1504 PUSHs(sv_2mortal(newSVpvn("(eval)",6)));
1505 PUSHs(sv_2mortal(newSViv(0)));
1507 gimme = (I32)cx->blk_gimme;
1508 if (gimme == G_VOID)
1509 PUSHs(&PL_sv_undef);
1511 PUSHs(sv_2mortal(newSViv(gimme & G_ARRAY)));
1512 if (CxTYPE(cx) == CXt_EVAL) {
1514 if (cx->blk_eval.old_op_type == OP_ENTEREVAL) {
1515 PUSHs(cx->blk_eval.cur_text);
1519 else if (cx->blk_eval.old_namesv) {
1520 PUSHs(sv_2mortal(newSVsv(cx->blk_eval.old_namesv)));
1523 /* eval BLOCK (try blocks have old_namesv == 0) */
1525 PUSHs(&PL_sv_undef);
1526 PUSHs(&PL_sv_undef);
1530 PUSHs(&PL_sv_undef);
1531 PUSHs(&PL_sv_undef);
1533 if (CxTYPE(cx) == CXt_SUB && cx->blk_sub.hasargs
1534 && CopSTASH_eq(PL_curcop, PL_debstash))
1536 AV *ary = cx->blk_sub.argarray;
1537 int off = AvARRAY(ary) - AvALLOC(ary);
1541 PL_dbargs = GvAV(gv_AVadd(tmpgv = gv_fetchpv("DB::args", TRUE,
1544 AvREAL_off(PL_dbargs); /* XXX should be REIFY (see av.h) */
1547 if (AvMAX(PL_dbargs) < AvFILLp(ary) + off)
1548 av_extend(PL_dbargs, AvFILLp(ary) + off);
1549 Copy(AvALLOC(ary), AvARRAY(PL_dbargs), AvFILLp(ary) + 1 + off, SV*);
1550 AvFILLp(PL_dbargs) = AvFILLp(ary) + off;
1552 /* XXX only hints propagated via op_private are currently
1553 * visible (others are not easily accessible, since they
1554 * use the global PL_hints) */
1555 PUSHs(sv_2mortal(newSViv((I32)cx->blk_oldcop->op_private &
1556 HINT_PRIVATE_MASK)));
1559 SV * old_warnings = cx->blk_oldcop->cop_warnings ;
1561 if (old_warnings == pWARN_NONE ||
1562 (old_warnings == pWARN_STD && (PL_dowarn & G_WARN_ON) == 0))
1563 mask = newSVpvn(WARN_NONEstring, WARNsize) ;
1564 else if (old_warnings == pWARN_ALL ||
1565 (old_warnings == pWARN_STD && PL_dowarn & G_WARN_ON))
1566 mask = newSVpvn(WARN_ALLstring, WARNsize) ;
1568 mask = newSVsv(old_warnings);
1569 PUSHs(sv_2mortal(mask));
1584 sv_reset(tmps, CopSTASH(PL_curcop));
1594 /* like pp_nextstate, but used instead when the debugger is active */
1598 PL_curcop = (COP*)PL_op;
1599 TAINT_NOT; /* Each statement is presumed innocent */
1600 PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;
1603 if (PL_op->op_private || SvIV(PL_DBsingle) || SvIV(PL_DBsignal) || SvIV(PL_DBtrace))
1607 register PERL_CONTEXT *cx;
1608 I32 gimme = G_ARRAY;
1615 DIE(aTHX_ "No DB::DB routine defined");
1617 if (CvDEPTH(cv) >= 1 && !(PL_debug & DEBUG_DB_RECURSE_FLAG))
1618 /* don't do recursive DB::DB call */
1630 push_return(PL_op->op_next);
1631 PUSHBLOCK(cx, CXt_SUB, SP);
1634 (void)SvREFCNT_inc(cv);
1635 PAD_SET_CUR(CvPADLIST(cv),1);
1636 RETURNOP(CvSTART(cv));
1650 register PERL_CONTEXT *cx;
1651 I32 gimme = GIMME_V;
1653 U32 cxtype = CXt_LOOP;
1661 if (PL_op->op_targ) {
1662 #ifndef USE_ITHREADS
1663 svp = &PAD_SVl(PL_op->op_targ); /* "my" variable */
1666 SAVEPADSV(PL_op->op_targ);
1667 iterdata = INT2PTR(void*, PL_op->op_targ);
1668 cxtype |= CXp_PADVAR;
1673 svp = &GvSV(gv); /* symbol table variable */
1674 SAVEGENERICSV(*svp);
1677 iterdata = (void*)gv;
1683 PUSHBLOCK(cx, cxtype, SP);
1685 PUSHLOOP(cx, iterdata, MARK);
1687 PUSHLOOP(cx, svp, MARK);
1689 if (PL_op->op_flags & OPf_STACKED) {
1690 cx->blk_loop.iterary = (AV*)SvREFCNT_inc(POPs);
1691 if (SvTYPE(cx->blk_loop.iterary) != SVt_PVAV) {
1693 if (SvNIOKp(sv) || !SvPOKp(sv) ||
1694 SvNIOKp(cx->blk_loop.iterary) || !SvPOKp(cx->blk_loop.iterary) ||
1695 (looks_like_number(sv) && *SvPVX(sv) != '0' &&
1696 looks_like_number((SV*)cx->blk_loop.iterary) &&
1697 *SvPVX(cx->blk_loop.iterary) != '0'))
1699 if (SvNV(sv) < IV_MIN ||
1700 SvNV((SV*)cx->blk_loop.iterary) >= IV_MAX)
1701 DIE(aTHX_ "Range iterator outside integer range");
1702 cx->blk_loop.iterix = SvIV(sv);
1703 cx->blk_loop.itermax = SvIV((SV*)cx->blk_loop.iterary);
1706 cx->blk_loop.iterlval = newSVsv(sv);
1710 cx->blk_loop.iterary = PL_curstack;
1711 AvFILLp(PL_curstack) = SP - PL_stack_base;
1712 cx->blk_loop.iterix = MARK - PL_stack_base;
1721 register PERL_CONTEXT *cx;
1722 I32 gimme = GIMME_V;
1728 PUSHBLOCK(cx, CXt_LOOP, SP);
1729 PUSHLOOP(cx, 0, SP);
1737 register PERL_CONTEXT *cx;
1745 newsp = PL_stack_base + cx->blk_loop.resetsp;
1748 if (gimme == G_VOID)
1750 else if (gimme == G_SCALAR) {
1752 *++newsp = sv_mortalcopy(*SP);
1754 *++newsp = &PL_sv_undef;
1758 *++newsp = sv_mortalcopy(*++mark);
1759 TAINT_NOT; /* Each item is independent */
1765 POPLOOP(cx); /* Stack values are safe: release loop vars ... */
1766 PL_curpm = newpm; /* ... and pop $1 et al */
1778 register PERL_CONTEXT *cx;
1779 bool popsub2 = FALSE;
1780 bool clear_errsv = FALSE;
1787 if (PL_curstackinfo->si_type == PERLSI_SORT) {
1788 if (cxstack_ix == PL_sortcxix
1789 || dopoptosub(cxstack_ix) <= PL_sortcxix)
1791 if (cxstack_ix > PL_sortcxix)
1792 dounwind(PL_sortcxix);
1793 AvARRAY(PL_curstack)[1] = *SP;
1794 PL_stack_sp = PL_stack_base + 1;
1799 cxix = dopoptosub(cxstack_ix);
1801 DIE(aTHX_ "Can't return outside a subroutine");
1802 if (cxix < cxstack_ix)
1806 switch (CxTYPE(cx)) {
1811 if (!(PL_in_eval & EVAL_KEEPERR))
1817 if (optype == OP_REQUIRE &&
1818 (MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) )
1820 /* Unassume the success we assumed earlier. */
1821 SV *nsv = cx->blk_eval.old_namesv;
1822 (void)hv_delete(GvHVn(PL_incgv), SvPVX(nsv), SvCUR(nsv), G_DISCARD);
1823 DIE(aTHX_ "%s did not return a true value", SvPVX(nsv));
1830 DIE(aTHX_ "panic: return");
1834 if (gimme == G_SCALAR) {
1837 if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) {
1839 *++newsp = SvREFCNT_inc(*SP);
1844 sv = SvREFCNT_inc(*SP); /* FREETMPS could clobber it */
1846 *++newsp = sv_mortalcopy(sv);
1851 *++newsp = (SvTEMP(*SP)) ? *SP : sv_mortalcopy(*SP);
1854 *++newsp = sv_mortalcopy(*SP);
1857 *++newsp = &PL_sv_undef;
1859 else if (gimme == G_ARRAY) {
1860 while (++MARK <= SP) {
1861 *++newsp = (popsub2 && SvTEMP(*MARK))
1862 ? *MARK : sv_mortalcopy(*MARK);
1863 TAINT_NOT; /* Each item is independent */
1866 PL_stack_sp = newsp;
1868 /* Stack values are safe: */
1870 POPSUB(cx,sv); /* release CV and @_ ... */
1874 PL_curpm = newpm; /* ... and pop $1 et al */
1880 return pop_return();
1887 register PERL_CONTEXT *cx;
1897 if (PL_op->op_flags & OPf_SPECIAL) {
1898 cxix = dopoptoloop(cxstack_ix);
1900 DIE(aTHX_ "Can't \"last\" outside a loop block");
1903 cxix = dopoptolabel(cPVOP->op_pv);
1905 DIE(aTHX_ "Label not found for \"last %s\"", cPVOP->op_pv);
1907 if (cxix < cxstack_ix)
1912 switch (CxTYPE(cx)) {
1915 newsp = PL_stack_base + cx->blk_loop.resetsp;
1916 nextop = cx->blk_loop.last_op->op_next;
1920 nextop = pop_return();
1924 nextop = pop_return();
1928 nextop = pop_return();
1931 DIE(aTHX_ "panic: last");
1935 if (gimme == G_SCALAR) {
1937 *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*SP))
1938 ? *SP : sv_mortalcopy(*SP);
1940 *++newsp = &PL_sv_undef;
1942 else if (gimme == G_ARRAY) {
1943 while (++MARK <= SP) {
1944 *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*MARK))
1945 ? *MARK : sv_mortalcopy(*MARK);
1946 TAINT_NOT; /* Each item is independent */
1952 /* Stack values are safe: */
1955 POPLOOP(cx); /* release loop vars ... */
1959 POPSUB(cx,sv); /* release CV and @_ ... */
1962 PL_curpm = newpm; /* ... and pop $1 et al */
1972 register PERL_CONTEXT *cx;
1975 if (PL_op->op_flags & OPf_SPECIAL) {
1976 cxix = dopoptoloop(cxstack_ix);
1978 DIE(aTHX_ "Can't \"next\" outside a loop block");
1981 cxix = dopoptolabel(cPVOP->op_pv);
1983 DIE(aTHX_ "Label not found for \"next %s\"", cPVOP->op_pv);
1985 if (cxix < cxstack_ix)
1988 /* clear off anything above the scope we're re-entering, but
1989 * save the rest until after a possible continue block */
1990 inner = PL_scopestack_ix;
1992 if (PL_scopestack_ix < inner)
1993 leave_scope(PL_scopestack[PL_scopestack_ix]);
1994 return cx->blk_loop.next_op;
2000 register PERL_CONTEXT *cx;
2003 if (PL_op->op_flags & OPf_SPECIAL) {
2004 cxix = dopoptoloop(cxstack_ix);
2006 DIE(aTHX_ "Can't \"redo\" outside a loop block");
2009 cxix = dopoptolabel(cPVOP->op_pv);
2011 DIE(aTHX_ "Label not found for \"redo %s\"", cPVOP->op_pv);
2013 if (cxix < cxstack_ix)
2017 oldsave = PL_scopestack[PL_scopestack_ix - 1];
2018 LEAVE_SCOPE(oldsave);
2019 return cx->blk_loop.redo_op;
2023 S_dofindlabel(pTHX_ OP *o, char *label, OP **opstack, OP **oplimit)
2027 static char too_deep[] = "Target of goto is too deeply nested";
2030 Perl_croak(aTHX_ too_deep);
2031 if (o->op_type == OP_LEAVE ||
2032 o->op_type == OP_SCOPE ||
2033 o->op_type == OP_LEAVELOOP ||
2034 o->op_type == OP_LEAVETRY)
2036 *ops++ = cUNOPo->op_first;
2038 Perl_croak(aTHX_ too_deep);
2041 if (o->op_flags & OPf_KIDS) {
2042 /* First try all the kids at this level, since that's likeliest. */
2043 for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
2044 if ((kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) &&
2045 kCOP->cop_label && strEQ(kCOP->cop_label, label))
2048 for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
2049 if (kid == PL_lastgotoprobe)
2051 if ((kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) &&
2053 (ops[-1]->op_type != OP_NEXTSTATE &&
2054 ops[-1]->op_type != OP_DBSTATE)))
2056 if ((o = dofindlabel(kid, label, ops, oplimit)))
2075 register PERL_CONTEXT *cx;
2076 #define GOTO_DEPTH 64
2077 OP *enterops[GOTO_DEPTH];
2079 int do_dump = (PL_op->op_type == OP_DUMP);
2080 static char must_have_label[] = "goto must have label";
2083 if (PL_op->op_flags & OPf_STACKED) {
2087 /* This egregious kludge implements goto &subroutine */
2088 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) {
2090 register PERL_CONTEXT *cx;
2091 CV* cv = (CV*)SvRV(sv);
2097 if (!CvROOT(cv) && !CvXSUB(cv)) {
2102 /* autoloaded stub? */
2103 if (cv != GvCV(gv) && (cv = GvCV(gv)))
2105 autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv),
2106 GvNAMELEN(gv), FALSE);
2107 if (autogv && (cv = GvCV(autogv)))
2109 tmpstr = sv_newmortal();
2110 gv_efullname3(tmpstr, gv, Nullch);
2111 DIE(aTHX_ "Goto undefined subroutine &%s",SvPVX(tmpstr));
2113 DIE(aTHX_ "Goto undefined subroutine");
2116 /* First do some returnish stuff. */
2117 cxix = dopoptosub(cxstack_ix);
2119 DIE(aTHX_ "Can't goto subroutine outside a subroutine");
2120 if (cxix < cxstack_ix)
2124 DIE(aTHX_ "Can't goto subroutine from an eval-string");
2126 if (CxTYPE(cx) == CXt_SUB && cx->blk_sub.hasargs) {
2127 /* put @_ back onto stack */
2128 AV* av = cx->blk_sub.argarray;
2130 items = AvFILLp(av) + 1;
2132 EXTEND(PL_stack_sp, items); /* @_ could have been extended. */
2133 Copy(AvARRAY(av), PL_stack_sp, items, SV*);
2134 PL_stack_sp += items;
2135 SvREFCNT_dec(GvAV(PL_defgv));
2136 GvAV(PL_defgv) = cx->blk_sub.savearray;
2137 /* abandon @_ if it got reified */
2139 (void)sv_2mortal((SV*)av); /* delay until return */
2141 av_extend(av, items-1);
2142 AvFLAGS(av) = AVf_REIFY;
2143 PAD_SVl(0) = (SV*)(cx->blk_sub.argarray = av);
2146 else if (CvXSUB(cv)) { /* put GvAV(defgv) back onto stack */
2148 av = GvAV(PL_defgv);
2149 items = AvFILLp(av) + 1;
2151 EXTEND(PL_stack_sp, items); /* @_ could have been extended. */
2152 Copy(AvARRAY(av), PL_stack_sp, items, SV*);
2153 PL_stack_sp += items;
2155 if (CxTYPE(cx) == CXt_SUB &&
2156 !(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth))
2157 SvREFCNT_dec(cx->blk_sub.cv);
2158 oldsave = PL_scopestack[PL_scopestack_ix - 1];
2159 LEAVE_SCOPE(oldsave);
2161 /* Now do some callish stuff. */
2164 #ifdef PERL_XSUB_OLDSTYLE
2165 if (CvOLDSTYLE(cv)) {
2166 I32 (*fp3)(int,int,int);
2171 fp3 = (I32(*)(int,int,int))CvXSUB(cv);
2172 items = (*fp3)(CvXSUBANY(cv).any_i32,
2173 mark - PL_stack_base + 1,
2175 SP = PL_stack_base + items;
2178 #endif /* PERL_XSUB_OLDSTYLE */
2183 PL_stack_sp--; /* There is no cv arg. */
2184 /* Push a mark for the start of arglist */
2186 (void)(*CvXSUB(cv))(aTHX_ cv);
2187 /* Pop the current context like a decent sub should */
2188 POPBLOCK(cx, PL_curpm);
2189 /* Do _not_ use PUTBACK, keep the XSUB's return stack! */
2192 return pop_return();
2195 AV* padlist = CvPADLIST(cv);
2196 if (CxTYPE(cx) == CXt_EVAL) {
2197 PL_in_eval = cx->blk_eval.old_in_eval;
2198 PL_eval_root = cx->blk_eval.old_eval_root;
2199 cx->cx_type = CXt_SUB;
2200 cx->blk_sub.hasargs = 0;
2202 cx->blk_sub.cv = cv;
2203 cx->blk_sub.olddepth = (U16)CvDEPTH(cv);
2206 if (CvDEPTH(cv) < 2)
2207 (void)SvREFCNT_inc(cv);
2209 if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION))
2210 sub_crush_depth(cv);
2211 pad_push(padlist, CvDEPTH(cv), cx->blk_sub.hasargs);
2213 PAD_SET_CUR(padlist, CvDEPTH(cv));
2214 if (cx->blk_sub.hasargs)
2216 AV* av = (AV*)PAD_SVl(0);
2219 cx->blk_sub.savearray = GvAV(PL_defgv);
2220 GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av);
2221 CX_CURPAD_SAVE(cx->blk_sub);
2222 cx->blk_sub.argarray = av;
2225 if (items >= AvMAX(av) + 1) {
2227 if (AvARRAY(av) != ary) {
2228 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
2229 SvPVX(av) = (char*)ary;
2231 if (items >= AvMAX(av) + 1) {
2232 AvMAX(av) = items - 1;
2233 Renew(ary,items+1,SV*);
2235 SvPVX(av) = (char*)ary;
2238 Copy(mark,AvARRAY(av),items,SV*);
2239 AvFILLp(av) = items - 1;
2240 assert(!AvREAL(av));
2247 if (PERLDB_SUB) { /* Checking curstash breaks DProf. */
2249 * We do not care about using sv to call CV;
2250 * it's for informational purposes only.
2252 SV *sv = GvSV(PL_DBsub);
2255 if (PERLDB_SUB_NN) {
2256 SvIVX(sv) = PTR2IV(cv); /* Already upgraded, saved */
2259 gv_efullname3(sv, CvGV(cv), Nullch);
2262 && (gotocv = get_cv("DB::goto", FALSE)) ) {
2263 PUSHMARK( PL_stack_sp );
2264 call_sv((SV*)gotocv, G_SCALAR | G_NODEBUG);
2268 RETURNOP(CvSTART(cv));
2272 label = SvPV(sv,n_a);
2273 if (!(do_dump || *label))
2274 DIE(aTHX_ must_have_label);
2277 else if (PL_op->op_flags & OPf_SPECIAL) {
2279 DIE(aTHX_ must_have_label);
2282 label = cPVOP->op_pv;
2284 if (label && *label) {
2286 bool leaving_eval = FALSE;
2287 PERL_CONTEXT *last_eval_cx = 0;
2291 PL_lastgotoprobe = 0;
2293 for (ix = cxstack_ix; ix >= 0; ix--) {
2295 switch (CxTYPE(cx)) {
2297 leaving_eval = TRUE;
2298 if (CxREALEVAL(cx)) {
2299 gotoprobe = (last_eval_cx ?
2300 last_eval_cx->blk_eval.old_eval_root :
2305 /* else fall through */
2307 gotoprobe = cx->blk_oldcop->op_sibling;
2313 gotoprobe = cx->blk_oldcop->op_sibling;
2315 gotoprobe = PL_main_root;
2318 if (CvDEPTH(cx->blk_sub.cv)) {
2319 gotoprobe = CvROOT(cx->blk_sub.cv);
2325 DIE(aTHX_ "Can't \"goto\" out of a pseudo block");
2328 DIE(aTHX_ "panic: goto");
2329 gotoprobe = PL_main_root;
2333 retop = dofindlabel(gotoprobe, label,
2334 enterops, enterops + GOTO_DEPTH);
2338 PL_lastgotoprobe = gotoprobe;
2341 DIE(aTHX_ "Can't find label %s", label);
2343 /* if we're leaving an eval, check before we pop any frames
2344 that we're not going to punt, otherwise the error
2347 if (leaving_eval && *enterops && enterops[1]) {
2349 for (i = 1; enterops[i]; i++)
2350 if (enterops[i]->op_type == OP_ENTERITER)
2351 DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
2354 /* pop unwanted frames */
2356 if (ix < cxstack_ix) {
2363 oldsave = PL_scopestack[PL_scopestack_ix];
2364 LEAVE_SCOPE(oldsave);
2367 /* push wanted frames */
2369 if (*enterops && enterops[1]) {
2371 for (ix = 1; enterops[ix]; ix++) {
2372 PL_op = enterops[ix];
2373 /* Eventually we may want to stack the needed arguments
2374 * for each op. For now, we punt on the hard ones. */
2375 if (PL_op->op_type == OP_ENTERITER)
2376 DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
2377 CALL_FPTR(PL_op->op_ppaddr)(aTHX);
2385 if (!retop) retop = PL_main_start;
2387 PL_restartop = retop;
2388 PL_do_undump = TRUE;
2392 PL_restartop = 0; /* hmm, must be GNU unexec().. */
2393 PL_do_undump = FALSE;
2409 if (anum == 1 && (PL_op->op_private & OPpEXIT_VMSISH))
2411 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
2414 PL_exit_flags |= PERL_EXIT_EXPECTED;
2416 PUSHs(&PL_sv_undef);
2424 NV value = SvNVx(GvSV(cCOP->cop_gv));
2425 register I32 match = I_32(value);
2428 if (((NV)match) > value)
2429 --match; /* was fractional--truncate other way */
2431 match -= cCOP->uop.scop.scop_offset;
2434 else if (match > cCOP->uop.scop.scop_max)
2435 match = cCOP->uop.scop.scop_max;
2436 PL_op = cCOP->uop.scop.scop_next[match];
2446 PL_op = PL_op->op_next; /* can't assume anything */
2449 match = *(SvPVx(GvSV(cCOP->cop_gv), n_a)) & 255;
2450 match -= cCOP->uop.scop.scop_offset;
2453 else if (match > cCOP->uop.scop.scop_max)
2454 match = cCOP->uop.scop.scop_max;
2455 PL_op = cCOP->uop.scop.scop_next[match];
2464 S_save_lines(pTHX_ AV *array, SV *sv)
2466 register char *s = SvPVX(sv);
2467 register char *send = SvPVX(sv) + SvCUR(sv);
2469 register I32 line = 1;
2471 while (s && s < send) {
2472 SV *tmpstr = NEWSV(85,0);
2474 sv_upgrade(tmpstr, SVt_PVMG);
2475 t = strchr(s, '\n');
2481 sv_setpvn(tmpstr, s, t - s);
2482 av_store(array, line++, tmpstr);
2487 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2489 S_docatch_body(pTHX_ va_list args)
2491 return docatch_body();
2496 S_docatch_body(pTHX)
2503 S_docatch(pTHX_ OP *o)
2508 volatile PERL_SI *cursi = PL_curstackinfo;
2512 assert(CATCH_GET == TRUE);
2516 /* Normally, the leavetry at the end of this block of ops will
2517 * pop an op off the return stack and continue there. By setting
2518 * the op to Nullop, we force an exit from the inner runops()
2521 retop = pop_return();
2522 push_return(Nullop);
2524 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2526 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_docatch_body));
2532 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2538 /* die caught by an inner eval - continue inner loop */
2539 if (PL_restartop && cursi == PL_curstackinfo) {
2540 PL_op = PL_restartop;
2544 /* a die in this eval - continue in outer loop */
2560 Perl_sv_compile_2op(pTHX_ SV *sv, OP** startop, char *code, PAD** padp)
2561 /* sv Text to convert to OP tree. */
2562 /* startop op_free() this to undo. */
2563 /* code Short string id of the caller. */
2565 dSP; /* Make POPBLOCK work. */
2568 I32 gimme = 0; /* SUSPECT - INITIALZE TO WHAT? NI-S */
2572 char tbuf[TYPE_DIGITS(long) + 12 + 10];
2573 char *tmpbuf = tbuf;
2579 /* switch to eval mode */
2581 if (PL_curcop == &PL_compiling) {
2582 SAVECOPSTASH_FREE(&PL_compiling);
2583 CopSTASH_set(&PL_compiling, PL_curstash);
2585 if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
2586 SV *sv = sv_newmortal();
2587 Perl_sv_setpvf(aTHX_ sv, "_<(%.10seval %lu)[%s:%"IVdf"]",
2588 code, (unsigned long)++PL_evalseq,
2589 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
2593 sprintf(tmpbuf, "_<(%.10s_eval %lu)", code, (unsigned long)++PL_evalseq);
2594 SAVECOPFILE_FREE(&PL_compiling);
2595 CopFILE_set(&PL_compiling, tmpbuf+2);
2596 SAVECOPLINE(&PL_compiling);
2597 CopLINE_set(&PL_compiling, 1);
2598 /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
2599 deleting the eval's FILEGV from the stash before gv_check() runs
2600 (i.e. before run-time proper). To work around the coredump that
2601 ensues, we always turn GvMULTI_on for any globals that were
2602 introduced within evals. See force_ident(). GSAR 96-10-12 */
2603 safestr = savepv(tmpbuf);
2604 SAVEDELETE(PL_defstash, safestr, strlen(safestr));
2606 #ifdef OP_IN_REGISTER
2611 PL_hints &= HINT_UTF8;
2614 PL_op->op_type = OP_ENTEREVAL;
2615 PL_op->op_flags = 0; /* Avoid uninit warning. */
2616 PUSHBLOCK(cx, CXt_EVAL|(PL_curcop == &PL_compiling ? 0 : CXp_REAL), SP);
2617 PUSHEVAL(cx, 0, Nullgv);
2618 rop = doeval(G_SCALAR, startop);
2619 POPBLOCK(cx,PL_curpm);
2622 (*startop)->op_type = OP_NULL;
2623 (*startop)->op_ppaddr = PL_ppaddr[OP_NULL];
2625 /* XXX DAPM do this properly one year */
2626 *padp = (AV*)SvREFCNT_inc(PL_comppad);
2628 if (PL_curcop == &PL_compiling)
2629 PL_compiling.op_private = (U8)(PL_hints & HINT_PRIVATE_MASK);
2630 #ifdef OP_IN_REGISTER
2636 /* With USE_5005THREADS, eval_owner must be held on entry to doeval */
2638 S_doeval(pTHX_ int gimme, OP** startop)
2645 PL_in_eval = ((saveop && saveop->op_type == OP_REQUIRE)
2646 ? (EVAL_INREQUIRE | (PL_in_eval & EVAL_INEVAL))
2652 for (i = cxstack_ix - 1; i >= 0; i--) {
2653 PERL_CONTEXT *cx = &cxstack[i];
2654 if (CxTYPE(cx) == CXt_EVAL)
2656 else if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
2657 caller = cx->blk_sub.cv;
2662 SAVESPTR(PL_compcv);
2663 PL_compcv = (CV*)NEWSV(1104,0);
2664 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2665 CvEVAL_on(PL_compcv);
2666 assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL);
2667 cxstack[cxstack_ix].blk_eval.cv = PL_compcv;
2669 /* set up a scratch pad */
2671 CvPADLIST(PL_compcv) = pad_new(padnew_SAVE);
2674 (saveop->op_type != OP_REQUIRE && saveop->op_type != OP_DOFILE))
2676 CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(caller);
2679 SAVEMORTALIZESV(PL_compcv); /* must remain until end of current statement */
2681 /* make sure we compile in the right package */
2683 if (CopSTASH_ne(PL_curcop, PL_curstash)) {
2684 SAVESPTR(PL_curstash);
2685 PL_curstash = CopSTASH(PL_curcop);
2687 SAVESPTR(PL_beginav);
2688 PL_beginav = newAV();
2689 SAVEFREESV(PL_beginav);
2690 SAVEI32(PL_error_count);
2692 /* try to compile it */
2694 PL_eval_root = Nullop;
2696 PL_curcop = &PL_compiling;
2697 PL_curcop->cop_arybase = 0;
2698 if (saveop && saveop->op_flags & OPf_SPECIAL)
2699 PL_in_eval |= EVAL_KEEPERR;
2702 if (yyparse() || PL_error_count || !PL_eval_root) {
2706 I32 optype = 0; /* Might be reset by POPEVAL. */
2711 op_free(PL_eval_root);
2712 PL_eval_root = Nullop;
2714 SP = PL_stack_base + POPMARK; /* pop original mark */
2716 POPBLOCK(cx,PL_curpm);
2722 if (optype == OP_REQUIRE) {
2723 char* msg = SvPVx(ERRSV, n_a);
2724 DIE(aTHX_ "%sCompilation failed in require",
2725 *msg ? msg : "Unknown error\n");
2728 char* msg = SvPVx(ERRSV, n_a);
2730 POPBLOCK(cx,PL_curpm);
2732 Perl_croak(aTHX_ "%sCompilation failed in regexp",
2733 (*msg ? msg : "Unknown error\n"));
2736 char* msg = SvPVx(ERRSV, n_a);
2738 sv_setpv(ERRSV, "Compilation error");
2743 CopLINE_set(&PL_compiling, 0);
2745 *startop = PL_eval_root;
2746 SvREFCNT_dec(CvOUTSIDE(PL_compcv));
2747 CvOUTSIDE(PL_compcv) = Nullcv;
2749 SAVEFREEOP(PL_eval_root);
2751 scalarvoid(PL_eval_root);
2752 else if (gimme & G_ARRAY)
2755 scalar(PL_eval_root);
2757 DEBUG_x(dump_eval());
2759 /* Register with debugger: */
2760 if (PERLDB_INTER && saveop->op_type == OP_REQUIRE) {
2761 CV *cv = get_cv("DB::postponed", FALSE);
2765 XPUSHs((SV*)CopFILEGV(&PL_compiling));
2767 call_sv((SV*)cv, G_DISCARD);
2771 /* compiled okay, so do it */
2773 CvDEPTH(PL_compcv) = 1;
2774 SP = PL_stack_base + POPMARK; /* pop original mark */
2775 PL_op = saveop; /* The caller may need it. */
2776 PL_lex_state = LEX_NOTPARSING; /* $^S needs this. */
2778 RETURNOP(PL_eval_start);
2782 S_doopen_pmc(pTHX_ const char *name, const char *mode)
2784 STRLEN namelen = strlen(name);
2787 if (namelen > 3 && strEQ(name + namelen - 3, ".pm")) {
2788 SV *pmcsv = Perl_newSVpvf(aTHX_ "%s%c", name, 'c');
2789 char *pmc = SvPV_nolen(pmcsv);
2792 if (PerlLIO_stat(pmc, &pmcstat) < 0) {
2793 fp = PerlIO_open(name, mode);
2796 if (PerlLIO_stat(name, &pmstat) < 0 ||
2797 pmstat.st_mtime < pmcstat.st_mtime)
2799 fp = PerlIO_open(pmc, mode);
2802 fp = PerlIO_open(name, mode);
2805 SvREFCNT_dec(pmcsv);
2808 fp = PerlIO_open(name, mode);
2816 register PERL_CONTEXT *cx;
2820 char *tryname = Nullch;
2821 SV *namesv = Nullsv;
2823 I32 gimme = GIMME_V;
2824 PerlIO *tryrsfp = 0;
2826 int filter_has_file = 0;
2827 GV *filter_child_proc = 0;
2828 SV *filter_state = 0;
2835 if (SvNIOKp(sv) && PL_op->op_type != OP_DOFILE) {
2836 if (SvPOK(sv) && SvNOK(sv) && SvNV(sv)) { /* require v5.6.1 */
2837 UV rev = 0, ver = 0, sver = 0;
2839 U8 *s = (U8*)SvPVX(sv);
2840 U8 *end = (U8*)SvPVX(sv) + SvCUR(sv);
2842 rev = utf8n_to_uvchr(s, end - s, &len, 0);
2845 ver = utf8n_to_uvchr(s, end - s, &len, 0);
2848 sver = utf8n_to_uvchr(s, end - s, &len, 0);
2851 if (PERL_REVISION < rev
2852 || (PERL_REVISION == rev
2853 && (PERL_VERSION < ver
2854 || (PERL_VERSION == ver
2855 && PERL_SUBVERSION < sver))))
2857 DIE(aTHX_ "Perl v%"UVuf".%"UVuf".%"UVuf" required--this is only "
2858 "v%d.%d.%d, stopped", rev, ver, sver, PERL_REVISION,
2859 PERL_VERSION, PERL_SUBVERSION);
2861 if (ckWARN(WARN_PORTABLE))
2862 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
2863 "v-string in use/require non-portable");
2866 else if (!SvPOKp(sv)) { /* require 5.005_03 */
2867 if ((NV)PERL_REVISION + ((NV)PERL_VERSION/(NV)1000)
2868 + ((NV)PERL_SUBVERSION/(NV)1000000)
2869 + 0.00000099 < SvNV(sv))
2873 NV nver = (nrev - rev) * 1000;
2874 UV ver = (UV)(nver + 0.0009);
2875 NV nsver = (nver - ver) * 1000;
2876 UV sver = (UV)(nsver + 0.0009);
2878 /* help out with the "use 5.6" confusion */
2879 if (sver == 0 && (rev > 5 || (rev == 5 && ver >= 100))) {
2880 DIE(aTHX_ "Perl v%"UVuf".%"UVuf".%"UVuf" required"
2881 " (did you mean v%"UVuf".%03"UVuf"?)--"
2882 "this is only v%d.%d.%d, stopped",
2883 rev, ver, sver, rev, ver/100,
2884 PERL_REVISION, PERL_VERSION, PERL_SUBVERSION);
2887 DIE(aTHX_ "Perl v%"UVuf".%"UVuf".%"UVuf" required--"
2888 "this is only v%d.%d.%d, stopped",
2889 rev, ver, sver, PERL_REVISION, PERL_VERSION,
2896 name = SvPV(sv, len);
2897 if (!(name && len > 0 && *name))
2898 DIE(aTHX_ "Null filename used");
2899 TAINT_PROPER("require");
2900 if (PL_op->op_type == OP_REQUIRE &&
2901 (svp = hv_fetch(GvHVn(PL_incgv), name, len, 0)) &&
2902 *svp != &PL_sv_undef)
2905 /* prepare to compile file */
2907 if (path_is_absolute(name)) {
2909 tryrsfp = doopen_pmc(name,PERL_SCRIPT_MODE);
2911 #ifdef MACOS_TRADITIONAL
2915 MacPerl_CanonDir(name, newname, 1);
2916 if (path_is_absolute(newname)) {
2918 tryrsfp = doopen_pmc(newname,PERL_SCRIPT_MODE);
2923 AV *ar = GvAVn(PL_incgv);
2927 if ((unixname = tounixspec(name, Nullch)) != Nullch)
2930 namesv = NEWSV(806, 0);
2931 for (i = 0; i <= AvFILL(ar); i++) {
2932 SV *dirsv = *av_fetch(ar, i, TRUE);
2938 if (SvTYPE(SvRV(loader)) == SVt_PVAV
2939 && !sv_isobject(loader))
2941 loader = *av_fetch((AV *)SvRV(loader), 0, TRUE);
2944 Perl_sv_setpvf(aTHX_ namesv, "/loader/0x%"UVxf"/%s",
2945 PTR2UV(SvRV(dirsv)), name);
2946 tryname = SvPVX(namesv);
2957 if (sv_isobject(loader))
2958 count = call_method("INC", G_ARRAY);
2960 count = call_sv(loader, G_ARRAY);
2970 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVGV) {
2974 if (SvTYPE(arg) == SVt_PVGV) {
2975 IO *io = GvIO((GV *)arg);
2980 tryrsfp = IoIFP(io);
2981 if (IoTYPE(io) == IoTYPE_PIPE) {
2982 /* reading from a child process doesn't
2983 nest -- when returning from reading
2984 the inner module, the outer one is
2985 unreadable (closed?) I've tried to
2986 save the gv to manage the lifespan of
2987 the pipe, but this didn't help. XXX */
2988 filter_child_proc = (GV *)arg;
2989 (void)SvREFCNT_inc(filter_child_proc);
2992 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
2993 PerlIO_close(IoOFP(io));
3005 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVCV) {
3007 (void)SvREFCNT_inc(filter_sub);
3010 filter_state = SP[i];
3011 (void)SvREFCNT_inc(filter_state);
3015 tryrsfp = PerlIO_open("/dev/null",
3030 filter_has_file = 0;
3031 if (filter_child_proc) {
3032 SvREFCNT_dec(filter_child_proc);
3033 filter_child_proc = 0;
3036 SvREFCNT_dec(filter_state);
3040 SvREFCNT_dec(filter_sub);
3045 if (!path_is_absolute(name)
3046 #ifdef MACOS_TRADITIONAL
3047 /* We consider paths of the form :a:b ambiguous and interpret them first
3048 as global then as local
3050 || (*name == ':' && name[1] != ':' && strchr(name+2, ':'))
3053 char *dir = SvPVx(dirsv, n_a);
3054 #ifdef MACOS_TRADITIONAL
3058 MacPerl_CanonDir(name, buf2, 1);
3059 Perl_sv_setpvf(aTHX_ namesv, "%s%s", MacPerl_CanonDir(dir, buf1, 0), buf2+(buf2[0] == ':'));
3063 if ((unixdir = tounixpath(dir, Nullch)) == Nullch)
3065 sv_setpv(namesv, unixdir);
3066 sv_catpv(namesv, unixname);
3068 Perl_sv_setpvf(aTHX_ namesv, "%s/%s", dir, name);
3071 TAINT_PROPER("require");
3072 tryname = SvPVX(namesv);
3073 tryrsfp = doopen_pmc(tryname, PERL_SCRIPT_MODE);
3075 if (tryname[0] == '.' && tryname[1] == '/')
3084 SAVECOPFILE_FREE(&PL_compiling);
3085 CopFILE_set(&PL_compiling, tryrsfp ? tryname : name);
3086 SvREFCNT_dec(namesv);
3088 if (PL_op->op_type == OP_REQUIRE) {
3089 char *msgstr = name;
3090 if (namesv) { /* did we lookup @INC? */
3091 SV *msg = sv_2mortal(newSVpv(msgstr,0));
3092 SV *dirmsgsv = NEWSV(0, 0);
3093 AV *ar = GvAVn(PL_incgv);
3095 sv_catpvn(msg, " in @INC", 8);
3096 if (instr(SvPVX(msg), ".h "))
3097 sv_catpv(msg, " (change .h to .ph maybe?)");
3098 if (instr(SvPVX(msg), ".ph "))
3099 sv_catpv(msg, " (did you run h2ph?)");
3100 sv_catpv(msg, " (@INC contains:");
3101 for (i = 0; i <= AvFILL(ar); i++) {
3102 char *dir = SvPVx(*av_fetch(ar, i, TRUE), n_a);
3103 Perl_sv_setpvf(aTHX_ dirmsgsv, " %s", dir);
3104 sv_catsv(msg, dirmsgsv);
3106 sv_catpvn(msg, ")", 1);
3107 SvREFCNT_dec(dirmsgsv);
3108 msgstr = SvPV_nolen(msg);
3110 DIE(aTHX_ "Can't locate %s", msgstr);
3116 SETERRNO(0, SS_NORMAL);
3118 /* Assume success here to prevent recursive requirement. */
3120 /* Check whether a hook in @INC has already filled %INC */
3121 if (!hook_sv || !(svp = hv_fetch(GvHVn(PL_incgv), name, len, 0))) {
3122 (void)hv_store(GvHVn(PL_incgv), name, len,
3123 (hook_sv ? SvREFCNT_inc(hook_sv)
3124 : newSVpv(CopFILE(&PL_compiling), 0)),
3130 lex_start(sv_2mortal(newSVpvn("",0)));
3131 SAVEGENERICSV(PL_rsfp_filters);
3132 PL_rsfp_filters = Nullav;
3137 SAVESPTR(PL_compiling.cop_warnings);
3138 if (PL_dowarn & G_WARN_ALL_ON)
3139 PL_compiling.cop_warnings = pWARN_ALL ;
3140 else if (PL_dowarn & G_WARN_ALL_OFF)
3141 PL_compiling.cop_warnings = pWARN_NONE ;
3142 else if (PL_taint_warn)
3143 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
3145 PL_compiling.cop_warnings = pWARN_STD ;
3146 SAVESPTR(PL_compiling.cop_io);
3147 PL_compiling.cop_io = Nullsv;
3149 if (filter_sub || filter_child_proc) {
3150 SV *datasv = filter_add(run_user_filter, Nullsv);
3151 IoLINES(datasv) = filter_has_file;
3152 IoFMT_GV(datasv) = (GV *)filter_child_proc;
3153 IoTOP_GV(datasv) = (GV *)filter_state;
3154 IoBOTTOM_GV(datasv) = (GV *)filter_sub;
3157 /* switch to eval mode */
3158 push_return(PL_op->op_next);
3159 PUSHBLOCK(cx, CXt_EVAL, SP);
3160 PUSHEVAL(cx, name, Nullgv);
3162 SAVECOPLINE(&PL_compiling);
3163 CopLINE_set(&PL_compiling, 0);
3167 /* Store and reset encoding. */
3168 encoding = PL_encoding;
3169 PL_encoding = Nullsv;
3171 op = DOCATCH(doeval(gimme, NULL));
3173 /* Restore encoding. */
3174 PL_encoding = encoding;
3181 return pp_require();
3187 register PERL_CONTEXT *cx;
3189 I32 gimme = GIMME_V, was = PL_sub_generation;
3190 char tbuf[TYPE_DIGITS(long) + 12];
3191 char *tmpbuf = tbuf;
3198 TAINT_PROPER("eval");
3204 /* switch to eval mode */
3206 if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
3207 SV *sv = sv_newmortal();
3208 Perl_sv_setpvf(aTHX_ sv, "_<(eval %lu)[%s:%"IVdf"]",
3209 (unsigned long)++PL_evalseq,
3210 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
3214 sprintf(tmpbuf, "_<(eval %lu)", (unsigned long)++PL_evalseq);
3215 SAVECOPFILE_FREE(&PL_compiling);
3216 CopFILE_set(&PL_compiling, tmpbuf+2);
3217 SAVECOPLINE(&PL_compiling);
3218 CopLINE_set(&PL_compiling, 1);
3219 /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
3220 deleting the eval's FILEGV from the stash before gv_check() runs
3221 (i.e. before run-time proper). To work around the coredump that
3222 ensues, we always turn GvMULTI_on for any globals that were
3223 introduced within evals. See force_ident(). GSAR 96-10-12 */
3224 safestr = savepv(tmpbuf);
3225 SAVEDELETE(PL_defstash, safestr, strlen(safestr));
3227 PL_hints = PL_op->op_targ;
3228 SAVESPTR(PL_compiling.cop_warnings);
3229 if (specialWARN(PL_curcop->cop_warnings))
3230 PL_compiling.cop_warnings = PL_curcop->cop_warnings;
3232 PL_compiling.cop_warnings = newSVsv(PL_curcop->cop_warnings);
3233 SAVEFREESV(PL_compiling.cop_warnings);
3235 SAVESPTR(PL_compiling.cop_io);
3236 if (specialCopIO(PL_curcop->cop_io))
3237 PL_compiling.cop_io = PL_curcop->cop_io;
3239 PL_compiling.cop_io = newSVsv(PL_curcop->cop_io);
3240 SAVEFREESV(PL_compiling.cop_io);
3243 push_return(PL_op->op_next);
3244 PUSHBLOCK(cx, (CXt_EVAL|CXp_REAL), SP);
3245 PUSHEVAL(cx, 0, Nullgv);
3247 /* prepare to compile string */
3249 if (PERLDB_LINE && PL_curstash != PL_debstash)
3250 save_lines(CopFILEAV(&PL_compiling), PL_linestr);
3252 ret = doeval(gimme, NULL);
3253 if (PERLDB_INTER && was != (I32)PL_sub_generation /* Some subs defined here. */
3254 && ret != PL_op->op_next) { /* Successive compilation. */
3255 strcpy(safestr, "_<(eval )"); /* Anything fake and short. */
3257 return DOCATCH(ret);
3267 register PERL_CONTEXT *cx;
3269 U8 save_flags = PL_op -> op_flags;
3274 retop = pop_return();
3277 if (gimme == G_VOID)
3279 else if (gimme == G_SCALAR) {
3282 if (SvFLAGS(TOPs) & SVs_TEMP)
3285 *MARK = sv_mortalcopy(TOPs);
3289 *MARK = &PL_sv_undef;
3294 /* in case LEAVE wipes old return values */
3295 for (mark = newsp + 1; mark <= SP; mark++) {
3296 if (!(SvFLAGS(*mark) & SVs_TEMP)) {
3297 *mark = sv_mortalcopy(*mark);
3298 TAINT_NOT; /* Each item is independent */
3302 PL_curpm = newpm; /* Don't pop $1 et al till now */
3305 assert(CvDEPTH(PL_compcv) == 1);
3307 CvDEPTH(PL_compcv) = 0;
3310 if (optype == OP_REQUIRE &&
3311 !(gimme == G_SCALAR ? SvTRUE(*SP) : SP > newsp))
3313 /* Unassume the success we assumed earlier. */
3314 SV *nsv = cx->blk_eval.old_namesv;
3315 (void)hv_delete(GvHVn(PL_incgv), SvPVX(nsv), SvCUR(nsv), G_DISCARD);
3316 retop = Perl_die(aTHX_ "%s did not return a true value", SvPVX(nsv));
3317 /* die_where() did LEAVE, or we won't be here */
3321 if (!(save_flags & OPf_SPECIAL))
3331 register PERL_CONTEXT *cx;
3332 I32 gimme = GIMME_V;
3337 push_return(cLOGOP->op_other->op_next);
3338 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), SP);
3341 PL_in_eval = EVAL_INEVAL;
3344 return DOCATCH(PL_op->op_next);
3355 register PERL_CONTEXT *cx;
3360 retop = pop_return();
3363 if (gimme == G_VOID)
3365 else if (gimme == G_SCALAR) {
3368 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
3371 *MARK = sv_mortalcopy(TOPs);
3375 *MARK = &PL_sv_undef;
3380 /* in case LEAVE wipes old return values */
3381 for (mark = newsp + 1; mark <= SP; mark++) {
3382 if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) {
3383 *mark = sv_mortalcopy(*mark);
3384 TAINT_NOT; /* Each item is independent */
3388 PL_curpm = newpm; /* Don't pop $1 et al till now */
3396 S_doparseform(pTHX_ SV *sv)
3399 register char *s = SvPV_force(sv, len);
3400 register char *send = s + len;
3401 register char *base = Nullch;
3402 register I32 skipspaces = 0;
3403 bool noblank = FALSE;
3404 bool repeat = FALSE;
3405 bool postspace = FALSE;
3413 Perl_croak(aTHX_ "Null picture in formline");
3415 New(804, fops, (send - s)*3+10, U16); /* Almost certainly too long... */
3420 *fpc++ = FF_LINEMARK;
3421 noblank = repeat = FALSE;
3439 case ' ': case '\t':
3450 *fpc++ = FF_LITERAL;
3458 *fpc++ = (U16)skipspaces;
3462 *fpc++ = FF_NEWLINE;
3466 arg = fpc - linepc + 1;
3473 *fpc++ = FF_LINEMARK;
3474 noblank = repeat = FALSE;
3483 ischop = s[-1] == '^';
3489 arg = (s - base) - 1;
3491 *fpc++ = FF_LITERAL;
3500 *fpc++ = FF_LINEGLOB;
3502 else if (*s == '#' || (*s == '.' && s[1] == '#')) {
3503 arg = ischop ? 512 : 0;
3513 arg |= 256 + (s - f);
3515 *fpc++ = s - base; /* fieldsize for FETCH */
3516 *fpc++ = FF_DECIMAL;
3519 else if (*s == '0' && s[1] == '#') { /* Zero padded decimals */
3520 arg = ischop ? 512 : 0;
3522 s++; /* skip the '0' first */
3531 arg |= 256 + (s - f);
3533 *fpc++ = s - base; /* fieldsize for FETCH */
3534 *fpc++ = FF_0DECIMAL;
3539 bool ismore = FALSE;
3542 while (*++s == '>') ;
3543 prespace = FF_SPACE;
3545 else if (*s == '|') {
3546 while (*++s == '|') ;
3547 prespace = FF_HALFSPACE;
3552 while (*++s == '<') ;
3555 if (*s == '.' && s[1] == '.' && s[2] == '.') {
3559 *fpc++ = s - base; /* fieldsize for FETCH */
3561 *fpc++ = ischop ? FF_CHECKCHOP : FF_CHECKNL;
3564 *fpc++ = (U16)prespace;
3579 { /* need to jump to the next word */
3581 z = WORD_ALIGN - SvCUR(sv) % WORD_ALIGN;
3582 SvGROW(sv, SvCUR(sv) + z + arg * sizeof(U16) + 4);
3583 s = SvPVX(sv) + SvCUR(sv) + z;
3585 Copy(fops, s, arg, U16);
3587 sv_magic(sv, Nullsv, PERL_MAGIC_fm, Nullch, 0);
3592 run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen)
3594 SV *datasv = FILTER_DATA(idx);
3595 int filter_has_file = IoLINES(datasv);
3596 GV *filter_child_proc = (GV *)IoFMT_GV(datasv);
3597 SV *filter_state = (SV *)IoTOP_GV(datasv);
3598 SV *filter_sub = (SV *)IoBOTTOM_GV(datasv);
3601 /* I was having segfault trouble under Linux 2.2.5 after a
3602 parse error occured. (Had to hack around it with a test
3603 for PL_error_count == 0.) Solaris doesn't segfault --
3604 not sure where the trouble is yet. XXX */
3606 if (filter_has_file) {
3607 len = FILTER_READ(idx+1, buf_sv, maxlen);
3610 if (filter_sub && len >= 0) {
3621 PUSHs(sv_2mortal(newSViv(maxlen)));
3623 PUSHs(filter_state);
3626 count = call_sv(filter_sub, G_SCALAR);
3642 IoLINES(datasv) = 0;
3643 if (filter_child_proc) {
3644 SvREFCNT_dec(filter_child_proc);
3645 IoFMT_GV(datasv) = Nullgv;
3648 SvREFCNT_dec(filter_state);
3649 IoTOP_GV(datasv) = Nullgv;
3652 SvREFCNT_dec(filter_sub);
3653 IoBOTTOM_GV(datasv) = Nullgv;
3655 filter_del(run_user_filter);
3661 /* perhaps someone can come up with a better name for
3662 this? it is not really "absolute", per se ... */
3664 S_path_is_absolute(pTHX_ char *name)
3666 if (PERL_FILE_IS_ABSOLUTE(name)
3667 #ifdef MACOS_TRADITIONAL
3670 || (*name == '.' && (name[1] == '/' ||
3671 (name[1] == '.' && name[2] == '/'))))