3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * Now far ahead the Road has gone,
13 * And I must follow, if I can,
14 * Pursuing it with eager feet,
15 * Until it joins some larger way
16 * Where many paths and errands meet.
17 * And whither then? I cannot say.
20 /* This file contains control-oriented pp ("push/pop") functions that
21 * execute the opcodes that make up a perl program. A typical pp function
22 * expects to find its arguments on the stack, and usually pushes its
23 * results onto the stack, hence the 'pp' terminology. Each OP structure
24 * contains a pointer to the relevant pp_foo() function.
26 * Control-oriented means things like pp_enteriter() and pp_next(), which
27 * alter the flow of control of the program.
32 #define PERL_IN_PP_CTL_C
36 #define WORD_ALIGN sizeof(U32)
39 #define DOCATCH(o) ((CATCH_GET == TRUE) ? docatch(o) : (o))
41 static I32 run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen);
49 cxix = dopoptosub(cxstack_ix);
53 switch (cxstack[cxix].blk_gimme) {
65 /* XXXX Should store the old value to allow for tie/overload - and
66 restore in regcomp, where marked with XXXX. */
75 register PMOP *pm = (PMOP*)cLOGOP->op_other;
77 MAGIC *mg = Null(MAGIC*);
79 /* prevent recompiling under /o and ithreads. */
80 #if defined(USE_ITHREADS)
81 if (pm->op_pmflags & PMf_KEEP && PM_GETRE(pm)) {
82 if (PL_op->op_flags & OPf_STACKED) {
91 if (PL_op->op_flags & OPf_STACKED) {
92 /* multiple args; concatentate them */
94 tmpstr = PAD_SV(ARGTARG);
95 sv_setpvn(tmpstr, "", 0);
96 while (++MARK <= SP) {
97 if (PL_amagic_generation) {
99 if ((SvAMAGIC(tmpstr) || SvAMAGIC(*MARK)) &&
100 (sv = amagic_call(tmpstr, *MARK, concat_amg, AMGf_assign)))
102 sv_setsv(tmpstr, sv);
106 sv_catsv(tmpstr, *MARK);
115 SV *sv = SvRV(tmpstr);
117 mg = mg_find(sv, PERL_MAGIC_qr);
120 regexp * const re = (regexp *)mg->mg_obj;
121 ReREFCNT_dec(PM_GETRE(pm));
122 PM_SETRE(pm, ReREFCNT_inc(re));
126 const char *t = SvPV_const(tmpstr, len);
128 /* Check against the last compiled regexp. */
129 if (!PM_GETRE(pm) || !PM_GETRE(pm)->precomp ||
130 PM_GETRE(pm)->prelen != (I32)len ||
131 memNE(PM_GETRE(pm)->precomp, t, len))
134 ReREFCNT_dec(PM_GETRE(pm));
135 PM_SETRE(pm, Null(REGEXP*)); /* crucial if regcomp aborts */
137 if (PL_op->op_flags & OPf_SPECIAL)
138 PL_reginterp_cnt = I32_MAX; /* Mark as safe. */
140 pm->op_pmflags = pm->op_pmpermflags; /* reset case sensitivity */
142 pm->op_pmdynflags |= PMdf_DYN_UTF8;
144 pm->op_pmdynflags &= ~PMdf_DYN_UTF8;
145 if (pm->op_pmdynflags & PMdf_UTF8)
146 t = (char*)bytes_to_utf8((U8*)t, &len);
148 PM_SETRE(pm, CALLREGCOMP(aTHX_ (char *)t, (char *)t + len, pm));
149 if (!DO_UTF8(tmpstr) && (pm->op_pmdynflags & PMdf_UTF8))
151 PL_reginterp_cnt = 0; /* XXXX Be extra paranoid - needed
152 inside tie/overload accessors. */
156 #ifndef INCOMPLETE_TAINTS
159 pm->op_pmdynflags |= PMdf_TAINTED;
161 pm->op_pmdynflags &= ~PMdf_TAINTED;
165 if (!PM_GETRE(pm)->prelen && PL_curpm)
167 else if (strEQ("\\s+", PM_GETRE(pm)->precomp))
168 pm->op_pmflags |= PMf_WHITE;
170 pm->op_pmflags &= ~PMf_WHITE;
172 /* XXX runtime compiled output needs to move to the pad */
173 if (pm->op_pmflags & PMf_KEEP) {
174 pm->op_private &= ~OPpRUNTIME; /* no point compiling again */
175 #if !defined(USE_ITHREADS)
176 /* XXX can't change the optree at runtime either */
177 cLOGOP->op_first->op_next = PL_op->op_next;
186 register PERL_CONTEXT *cx = &cxstack[cxstack_ix];
187 register PMOP * const pm = (PMOP*) cLOGOP->op_other;
188 register SV * const dstr = cx->sb_dstr;
189 register char *s = cx->sb_s;
190 register char *m = cx->sb_m;
191 char *orig = cx->sb_orig;
192 register REGEXP * const rx = cx->sb_rx;
194 REGEXP *old = PM_GETRE(pm);
201 rxres_restore(&cx->sb_rxres, rx);
202 RX_MATCH_UTF8_set(rx, DO_UTF8(cx->sb_targ));
204 if (cx->sb_iters++) {
205 const I32 saviters = cx->sb_iters;
206 if (cx->sb_iters > cx->sb_maxiters)
207 DIE(aTHX_ "Substitution loop");
209 if (!(cx->sb_rxtainted & 2) && SvTAINTED(TOPs))
210 cx->sb_rxtainted |= 2;
211 sv_catsv(dstr, POPs);
214 if (cx->sb_once || !CALLREGEXEC(aTHX_ rx, s, cx->sb_strend, orig,
215 s == m, cx->sb_targ, NULL,
216 ((cx->sb_rflags & REXEC_COPY_STR)
217 ? (REXEC_IGNOREPOS|REXEC_NOT_FIRST)
218 : (REXEC_COPY_STR|REXEC_IGNOREPOS|REXEC_NOT_FIRST))))
220 SV * const targ = cx->sb_targ;
222 assert(cx->sb_strend >= s);
223 if(cx->sb_strend > s) {
224 if (DO_UTF8(dstr) && !SvUTF8(targ))
225 sv_catpvn_utf8_upgrade(dstr, s, cx->sb_strend - s, nsv);
227 sv_catpvn(dstr, s, cx->sb_strend - s);
229 cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
231 #ifdef PERL_OLD_COPY_ON_WRITE
233 sv_force_normal_flags(targ, SV_COW_DROP_PV);
239 SvPV_set(targ, SvPVX(dstr));
240 SvCUR_set(targ, SvCUR(dstr));
241 SvLEN_set(targ, SvLEN(dstr));
244 SvPV_set(dstr, (char*)0);
247 TAINT_IF(cx->sb_rxtainted & 1);
248 PUSHs(sv_2mortal(newSViv(saviters - 1)));
250 (void)SvPOK_only_UTF8(targ);
251 TAINT_IF(cx->sb_rxtainted);
255 LEAVE_SCOPE(cx->sb_oldsave);
258 RETURNOP(pm->op_next);
260 cx->sb_iters = saviters;
262 if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) {
265 cx->sb_orig = orig = rx->subbeg;
267 cx->sb_strend = s + (cx->sb_strend - m);
269 cx->sb_m = m = rx->startp[0] + orig;
271 if (DO_UTF8(dstr) && !SvUTF8(cx->sb_targ))
272 sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv);
274 sv_catpvn(dstr, s, m-s);
276 cx->sb_s = rx->endp[0] + orig;
277 { /* Update the pos() information. */
278 SV * const sv = cx->sb_targ;
281 if (SvTYPE(sv) < SVt_PVMG)
282 SvUPGRADE(sv, SVt_PVMG);
283 if (!(mg = mg_find(sv, PERL_MAGIC_regex_global))) {
284 sv_magic(sv, Nullsv, PERL_MAGIC_regex_global, Nullch, 0);
285 mg = mg_find(sv, PERL_MAGIC_regex_global);
293 (void)ReREFCNT_inc(rx);
294 cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
295 rxres_save(&cx->sb_rxres, rx);
296 RETURNOP(pm->op_pmreplstart);
300 Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx)
305 if (!p || p[1] < rx->nparens) {
306 #ifdef PERL_OLD_COPY_ON_WRITE
307 i = 7 + rx->nparens * 2;
309 i = 6 + rx->nparens * 2;
318 *p++ = PTR2UV(RX_MATCH_COPIED(rx) ? rx->subbeg : Nullch);
319 RX_MATCH_COPIED_off(rx);
321 #ifdef PERL_OLD_COPY_ON_WRITE
322 *p++ = PTR2UV(rx->saved_copy);
323 rx->saved_copy = Nullsv;
328 *p++ = PTR2UV(rx->subbeg);
329 *p++ = (UV)rx->sublen;
330 for (i = 0; i <= rx->nparens; ++i) {
331 *p++ = (UV)rx->startp[i];
332 *p++ = (UV)rx->endp[i];
337 Perl_rxres_restore(pTHX_ void **rsp, REGEXP *rx)
342 RX_MATCH_COPY_FREE(rx);
343 RX_MATCH_COPIED_set(rx, *p);
346 #ifdef PERL_OLD_COPY_ON_WRITE
348 SvREFCNT_dec (rx->saved_copy);
349 rx->saved_copy = INT2PTR(SV*,*p);
355 rx->subbeg = INT2PTR(char*,*p++);
356 rx->sublen = (I32)(*p++);
357 for (i = 0; i <= rx->nparens; ++i) {
358 rx->startp[i] = (I32)(*p++);
359 rx->endp[i] = (I32)(*p++);
364 Perl_rxres_free(pTHX_ void **rsp)
366 UV * const p = (UV*)*rsp;
370 void *tmp = INT2PTR(char*,*p);
373 Poison(*p, 1, sizeof(*p));
375 Safefree(INT2PTR(char*,*p));
377 #ifdef PERL_OLD_COPY_ON_WRITE
379 SvREFCNT_dec (INT2PTR(SV*,p[1]));
389 dSP; dMARK; dORIGMARK;
390 register SV * const tmpForm = *++MARK;
395 register SV *sv = Nullsv;
396 const char *item = Nullch;
400 bool chopspace = (strchr(PL_chopset, ' ') != Nullch);
401 const char *chophere = Nullch;
402 char *linemark = Nullch;
404 bool gotsome = FALSE;
406 const STRLEN fudge = SvPOK(tmpForm)
407 ? (SvCUR(tmpForm) * (IN_BYTES ? 1 : 3) + 1) : 0;
408 bool item_is_utf8 = FALSE;
409 bool targ_is_utf8 = FALSE;
415 if (!SvMAGICAL(tmpForm) || !SvCOMPILED(tmpForm)) {
416 if (SvREADONLY(tmpForm)) {
417 SvREADONLY_off(tmpForm);
418 parseres = doparseform(tmpForm);
419 SvREADONLY_on(tmpForm);
422 parseres = doparseform(tmpForm);
426 SvPV_force(PL_formtarget, len);
427 if (DO_UTF8(PL_formtarget))
429 t = SvGROW(PL_formtarget, len + fudge + 1); /* XXX SvCUR bad */
431 f = SvPV_const(tmpForm, len);
432 /* need to jump to the next word */
433 fpc = (U32*)(f + len + WORD_ALIGN - SvCUR(tmpForm) % WORD_ALIGN);
437 const char *name = "???";
440 case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break;
441 case FF_BLANK: arg = fpc[1]; name = "BLANK"; break;
442 case FF_SKIP: arg = fpc[1]; name = "SKIP"; break;
443 case FF_FETCH: arg = fpc[1]; name = "FETCH"; break;
444 case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break;
446 case FF_CHECKNL: name = "CHECKNL"; break;
447 case FF_CHECKCHOP: name = "CHECKCHOP"; break;
448 case FF_SPACE: name = "SPACE"; break;
449 case FF_HALFSPACE: name = "HALFSPACE"; break;
450 case FF_ITEM: name = "ITEM"; break;
451 case FF_CHOP: name = "CHOP"; break;
452 case FF_LINEGLOB: name = "LINEGLOB"; break;
453 case FF_NEWLINE: name = "NEWLINE"; break;
454 case FF_MORE: name = "MORE"; break;
455 case FF_LINEMARK: name = "LINEMARK"; break;
456 case FF_END: name = "END"; break;
457 case FF_0DECIMAL: name = "0DECIMAL"; break;
458 case FF_LINESNGL: name = "LINESNGL"; break;
461 PerlIO_printf(Perl_debug_log, "%-16s%ld\n", name, (long) arg);
463 PerlIO_printf(Perl_debug_log, "%-16s\n", name);
474 if (targ_is_utf8 && !SvUTF8(tmpForm)) {
475 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
477 sv_catpvn_utf8_upgrade(PL_formtarget, f, arg, nsv);
478 t = SvEND(PL_formtarget);
481 if (!targ_is_utf8 && DO_UTF8(tmpForm)) {
482 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
484 sv_utf8_upgrade(PL_formtarget);
485 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
486 t = SvEND(PL_formtarget);
506 if (ckWARN(WARN_SYNTAX))
507 Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Not enough format arguments");
514 const char *s = item = SvPV_const(sv, len);
517 itemsize = sv_len_utf8(sv);
518 if (itemsize != (I32)len) {
520 if (itemsize > fieldsize) {
521 itemsize = fieldsize;
522 itembytes = itemsize;
523 sv_pos_u2b(sv, &itembytes, 0);
527 send = chophere = s + itembytes;
537 sv_pos_b2u(sv, &itemsize);
541 item_is_utf8 = FALSE;
542 if (itemsize > fieldsize)
543 itemsize = fieldsize;
544 send = chophere = s + itemsize;
558 const char *s = item = SvPV_const(sv, len);
561 itemsize = sv_len_utf8(sv);
562 if (itemsize != (I32)len) {
564 if (itemsize <= fieldsize) {
565 const char *send = chophere = s + itemsize;
578 itemsize = fieldsize;
579 itembytes = itemsize;
580 sv_pos_u2b(sv, &itembytes, 0);
581 send = chophere = s + itembytes;
582 while (s < send || (s == send && isSPACE(*s))) {
592 if (strchr(PL_chopset, *s))
597 itemsize = chophere - item;
598 sv_pos_b2u(sv, &itemsize);
604 item_is_utf8 = FALSE;
605 if (itemsize <= fieldsize) {
606 const char *const send = chophere = s + itemsize;
619 itemsize = fieldsize;
620 send = chophere = s + itemsize;
621 while (s < send || (s == send && isSPACE(*s))) {
631 if (strchr(PL_chopset, *s))
636 itemsize = chophere - item;
642 arg = fieldsize - itemsize;
651 arg = fieldsize - itemsize;
662 const char *s = item;
666 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
668 sv_utf8_upgrade(PL_formtarget);
669 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
670 t = SvEND(PL_formtarget);
674 if (UTF8_IS_CONTINUED(*s)) {
675 STRLEN skip = UTF8SKIP(s);
692 if ( !((*t++ = *s++) & ~31) )
698 if (targ_is_utf8 && !item_is_utf8) {
699 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
701 sv_catpvn_utf8_upgrade(PL_formtarget, s, arg, nsv);
702 for (; t < SvEND(PL_formtarget); t++) {
715 const int ch = *t++ = *s++;
718 if ( !((*t++ = *s++) & ~31) )
727 const char *s = chophere;
729 while (*s && isSPACE(*s))
745 const char *s = item = SvPV_const(sv, len);
747 if ((item_is_utf8 = DO_UTF8(sv)))
748 itemsize = sv_len_utf8(sv);
750 bool chopped = FALSE;
751 const char *const send = s + len;
753 chophere = s + itemsize;
769 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
771 SvUTF8_on(PL_formtarget);
773 SvCUR_set(sv, chophere - item);
774 sv_catsv(PL_formtarget, sv);
775 SvCUR_set(sv, itemsize);
777 sv_catsv(PL_formtarget, sv);
779 SvCUR_set(PL_formtarget, SvCUR(PL_formtarget) - 1);
780 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
781 t = SvPVX(PL_formtarget) + SvCUR(PL_formtarget);
790 #if defined(USE_LONG_DOUBLE)
791 fmt = (arg & 256) ? "%#0*.*" PERL_PRIfldbl : "%0*.*" PERL_PRIfldbl;
793 fmt = (arg & 256) ? "%#0*.*f" : "%0*.*f";
798 #if defined(USE_LONG_DOUBLE)
799 fmt = (arg & 256) ? "%#*.*" PERL_PRIfldbl : "%*.*" PERL_PRIfldbl;
801 fmt = (arg & 256) ? "%#*.*f" : "%*.*f";
804 /* If the field is marked with ^ and the value is undefined,
806 if ((arg & 512) && !SvOK(sv)) {
814 /* overflow evidence */
815 if (num_overflow(value, fieldsize, arg)) {
821 /* Formats aren't yet marked for locales, so assume "yes". */
823 STORE_NUMERIC_STANDARD_SET_LOCAL();
824 sprintf(t, fmt, (int) fieldsize, (int) arg & 255, value);
825 RESTORE_NUMERIC_STANDARD();
832 while (t-- > linemark && *t == ' ') ;
840 if (arg) { /* repeat until fields exhausted? */
842 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
843 lines += FmLINES(PL_formtarget);
846 if (strnEQ(linemark, linemark - arg, arg))
847 DIE(aTHX_ "Runaway format");
850 SvUTF8_on(PL_formtarget);
851 FmLINES(PL_formtarget) = lines;
853 RETURNOP(cLISTOP->op_first);
864 const char *s = chophere;
865 const char *send = item + len;
867 while (*s && isSPACE(*s) && s < send)
872 arg = fieldsize - itemsize;
879 if (strnEQ(s1," ",3)) {
880 while (s1 > SvPVX_const(PL_formtarget) && isSPACE(s1[-1]))
891 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
893 SvUTF8_on(PL_formtarget);
894 FmLINES(PL_formtarget) += lines;
906 if (PL_stack_base + *PL_markstack_ptr == SP) {
908 if (GIMME_V == G_SCALAR)
909 XPUSHs(sv_2mortal(newSViv(0)));
910 RETURNOP(PL_op->op_next->op_next);
912 PL_stack_sp = PL_stack_base + *PL_markstack_ptr + 1;
913 pp_pushmark(); /* push dst */
914 pp_pushmark(); /* push src */
915 ENTER; /* enter outer scope */
918 if (PL_op->op_private & OPpGREP_LEX)
919 SAVESPTR(PAD_SVl(PL_op->op_targ));
922 ENTER; /* enter inner scope */
925 src = PL_stack_base[*PL_markstack_ptr];
927 if (PL_op->op_private & OPpGREP_LEX)
928 PAD_SVl(PL_op->op_targ) = src;
933 if (PL_op->op_type == OP_MAPSTART)
934 pp_pushmark(); /* push top */
935 return ((LOGOP*)PL_op->op_next)->op_other;
941 const I32 gimme = GIMME_V;
942 I32 items = (SP - PL_stack_base) - *PL_markstack_ptr; /* how many new items */
948 /* first, move source pointer to the next item in the source list */
949 ++PL_markstack_ptr[-1];
951 /* if there are new items, push them into the destination list */
952 if (items && gimme != G_VOID) {
953 /* might need to make room back there first */
954 if (items > PL_markstack_ptr[-1] - PL_markstack_ptr[-2]) {
955 /* XXX this implementation is very pessimal because the stack
956 * is repeatedly extended for every set of items. Is possible
957 * to do this without any stack extension or copying at all
958 * by maintaining a separate list over which the map iterates
959 * (like foreach does). --gsar */
961 /* everything in the stack after the destination list moves
962 * towards the end the stack by the amount of room needed */
963 shift = items - (PL_markstack_ptr[-1] - PL_markstack_ptr[-2]);
965 /* items to shift up (accounting for the moved source pointer) */
966 count = (SP - PL_stack_base) - (PL_markstack_ptr[-1] - 1);
968 /* This optimization is by Ben Tilly and it does
969 * things differently from what Sarathy (gsar)
970 * is describing. The downside of this optimization is
971 * that leaves "holes" (uninitialized and hopefully unused areas)
972 * to the Perl stack, but on the other hand this
973 * shouldn't be a problem. If Sarathy's idea gets
974 * implemented, this optimization should become
975 * irrelevant. --jhi */
977 shift = count; /* Avoid shifting too often --Ben Tilly */
982 PL_markstack_ptr[-1] += shift;
983 *PL_markstack_ptr += shift;
987 /* copy the new items down to the destination list */
988 dst = PL_stack_base + (PL_markstack_ptr[-2] += items) - 1;
989 if (gimme == G_ARRAY) {
991 *dst-- = SvTEMP(TOPs) ? POPs : sv_mortalcopy(POPs);
994 /* scalar context: we don't care about which values map returns
995 * (we use undef here). And so we certainly don't want to do mortal
996 * copies of meaningless values. */
997 while (items-- > 0) {
999 *dst-- = &PL_sv_undef;
1003 LEAVE; /* exit inner scope */
1006 if (PL_markstack_ptr[-1] > *PL_markstack_ptr) {
1008 (void)POPMARK; /* pop top */
1009 LEAVE; /* exit outer scope */
1010 (void)POPMARK; /* pop src */
1011 items = --*PL_markstack_ptr - PL_markstack_ptr[-1];
1012 (void)POPMARK; /* pop dst */
1013 SP = PL_stack_base + POPMARK; /* pop original mark */
1014 if (gimme == G_SCALAR) {
1015 if (PL_op->op_private & OPpGREP_LEX) {
1016 SV* sv = sv_newmortal();
1017 sv_setiv(sv, items);
1025 else if (gimme == G_ARRAY)
1032 ENTER; /* enter inner scope */
1035 /* set $_ to the new source item */
1036 src = PL_stack_base[PL_markstack_ptr[-1]];
1038 if (PL_op->op_private & OPpGREP_LEX)
1039 PAD_SVl(PL_op->op_targ) = src;
1043 RETURNOP(cLOGOP->op_other);
1051 if (GIMME == G_ARRAY)
1053 if (SvTRUEx(PAD_SV(PL_op->op_targ)))
1054 return cLOGOP->op_other;
1063 if (GIMME == G_ARRAY) {
1064 RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
1068 SV * const targ = PAD_SV(PL_op->op_targ);
1071 if (PL_op->op_private & OPpFLIP_LINENUM) {
1072 if (GvIO(PL_last_in_gv)) {
1073 flip = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
1076 GV * const gv = gv_fetchpv(".", TRUE, SVt_PV);
1078 flip = SvIV(sv) == SvIV(GvSV(gv));
1084 sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1);
1085 if (PL_op->op_flags & OPf_SPECIAL) {
1093 RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
1096 sv_setpvn(TARG, "", 0);
1102 /* This code tries to decide if "$left .. $right" should use the
1103 magical string increment, or if the range is numeric (we make
1104 an exception for .."0" [#18165]). AMS 20021031. */
1106 #define RANGE_IS_NUMERIC(left,right) ( \
1107 SvNIOKp(left) || (SvOK(left) && !SvPOKp(left)) || \
1108 SvNIOKp(right) || (SvOK(right) && !SvPOKp(right)) || \
1109 (((!SvOK(left) && SvOK(right)) || ((!SvOK(left) || \
1110 looks_like_number(left)) && SvPOKp(left) && *SvPVX_const(left) != '0')) \
1111 && (!SvOK(right) || looks_like_number(right))))
1117 if (GIMME == G_ARRAY) {
1123 if (RANGE_IS_NUMERIC(left,right)) {
1126 if ((SvOK(left) && SvNV(left) < IV_MIN) ||
1127 (SvOK(right) && SvNV(right) > IV_MAX))
1128 DIE(aTHX_ "Range iterator outside integer range");
1139 SV * const sv = sv_2mortal(newSViv(i++));
1144 SV * const final = sv_mortalcopy(right);
1146 const char * const tmps = SvPV_const(final, len);
1148 SV *sv = sv_mortalcopy(left);
1149 SvPV_force_nolen(sv);
1150 while (!SvNIOKp(sv) && SvCUR(sv) <= len) {
1152 if (strEQ(SvPVX_const(sv),tmps))
1154 sv = sv_2mortal(newSVsv(sv));
1161 SV * const targ = PAD_SV(cUNOP->op_first->op_targ);
1165 if (PL_op->op_private & OPpFLIP_LINENUM) {
1166 if (GvIO(PL_last_in_gv)) {
1167 flop = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
1170 GV * const gv = gv_fetchpv(".", TRUE, SVt_PV);
1171 if (gv && GvSV(gv)) flop = SvIV(sv) == SvIV(GvSV(gv));
1179 sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0);
1180 sv_catpvn(targ, "E0", 2);
1190 static const char * const context_name[] = {
1201 S_dopoptolabel(pTHX_ const char *label)
1205 for (i = cxstack_ix; i >= 0; i--) {
1206 register const PERL_CONTEXT * const cx = &cxstack[i];
1207 switch (CxTYPE(cx)) {
1213 if (ckWARN(WARN_EXITING))
1214 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s",
1215 context_name[CxTYPE(cx)], OP_NAME(PL_op));
1216 if (CxTYPE(cx) == CXt_NULL)
1220 if ( !cx->blk_loop.label || strNE(label, cx->blk_loop.label) ) {
1221 DEBUG_l(Perl_deb(aTHX_ "(Skipping label #%ld %s)\n",
1222 (long)i, cx->blk_loop.label));
1225 DEBUG_l( Perl_deb(aTHX_ "(Found label #%ld %s)\n", (long)i, label));
1233 Perl_dowantarray(pTHX)
1235 const I32 gimme = block_gimme();
1236 return (gimme == G_VOID) ? G_SCALAR : gimme;
1240 Perl_block_gimme(pTHX)
1242 const I32 cxix = dopoptosub(cxstack_ix);
1246 switch (cxstack[cxix].blk_gimme) {
1254 Perl_croak(aTHX_ "panic: bad gimme: %d\n", cxstack[cxix].blk_gimme);
1261 Perl_is_lvalue_sub(pTHX)
1263 const I32 cxix = dopoptosub(cxstack_ix);
1264 assert(cxix >= 0); /* We should only be called from inside subs */
1266 if (cxstack[cxix].blk_sub.lval && CvLVALUE(cxstack[cxix].blk_sub.cv))
1267 return cxstack[cxix].blk_sub.lval;
1273 S_dopoptosub(pTHX_ I32 startingblock)
1275 return dopoptosub_at(cxstack, startingblock);
1279 S_dopoptosub_at(pTHX_ const PERL_CONTEXT *cxstk, I32 startingblock)
1282 for (i = startingblock; i >= 0; i--) {
1283 register const PERL_CONTEXT * const cx = &cxstk[i];
1284 switch (CxTYPE(cx)) {
1290 DEBUG_l( Perl_deb(aTHX_ "(Found sub #%ld)\n", (long)i));
1298 S_dopoptoeval(pTHX_ I32 startingblock)
1301 for (i = startingblock; i >= 0; i--) {
1302 register const PERL_CONTEXT *cx = &cxstack[i];
1303 switch (CxTYPE(cx)) {
1307 DEBUG_l( Perl_deb(aTHX_ "(Found eval #%ld)\n", (long)i));
1315 S_dopoptoloop(pTHX_ I32 startingblock)
1318 for (i = startingblock; i >= 0; i--) {
1319 register const PERL_CONTEXT * const cx = &cxstack[i];
1320 switch (CxTYPE(cx)) {
1326 if (ckWARN(WARN_EXITING))
1327 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s",
1328 context_name[CxTYPE(cx)], OP_NAME(PL_op));
1329 if ((CxTYPE(cx)) == CXt_NULL)
1333 DEBUG_l( Perl_deb(aTHX_ "(Found loop #%ld)\n", (long)i));
1341 Perl_dounwind(pTHX_ I32 cxix)
1345 while (cxstack_ix > cxix) {
1347 register PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1348 DEBUG_l(PerlIO_printf(Perl_debug_log, "Unwinding block %ld, type %s\n",
1349 (long) cxstack_ix, PL_block_type[CxTYPE(cx)]));
1350 /* Note: we don't need to restore the base context info till the end. */
1351 switch (CxTYPE(cx)) {
1354 continue; /* not break */
1373 PERL_UNUSED_VAR(optype);
1377 Perl_qerror(pTHX_ SV *err)
1380 sv_catsv(ERRSV, err);
1382 sv_catsv(PL_errors, err);
1384 Perl_warn(aTHX_ "%"SVf, err);
1389 Perl_die_where(pTHX_ const char *message, STRLEN msglen)
1398 if (PL_in_eval & EVAL_KEEPERR) {
1399 static const char prefix[] = "\t(in cleanup) ";
1400 SV * const err = ERRSV;
1401 const char *e = Nullch;
1403 sv_setpvn(err,"",0);
1404 else if (SvCUR(err) >= sizeof(prefix)+msglen-1) {
1406 e = SvPV_const(err, len);
1408 if (*e != *message || strNE(e,message))
1412 SvGROW(err, SvCUR(err)+sizeof(prefix)+msglen);
1413 sv_catpvn(err, prefix, sizeof(prefix)-1);
1414 sv_catpvn(err, message, msglen);
1415 if (ckWARN(WARN_MISC)) {
1416 const STRLEN start = SvCUR(err)-msglen-sizeof(prefix)+1;
1417 Perl_warner(aTHX_ packWARN(WARN_MISC), SvPVX_const(err)+start);
1422 sv_setpvn(ERRSV, message, msglen);
1426 while ((cxix = dopoptoeval(cxstack_ix)) < 0
1427 && PL_curstackinfo->si_prev)
1435 register PERL_CONTEXT *cx;
1438 if (cxix < cxstack_ix)
1441 POPBLOCK(cx,PL_curpm);
1442 if (CxTYPE(cx) != CXt_EVAL) {
1444 message = SvPVx_const(ERRSV, msglen);
1445 PerlIO_write(Perl_error_log, "panic: die ", 11);
1446 PerlIO_write(Perl_error_log, message, msglen);
1451 if (gimme == G_SCALAR)
1452 *++newsp = &PL_sv_undef;
1453 PL_stack_sp = newsp;
1457 /* LEAVE could clobber PL_curcop (see save_re_context())
1458 * XXX it might be better to find a way to avoid messing with
1459 * PL_curcop in save_re_context() instead, but this is a more
1460 * minimal fix --GSAR */
1461 PL_curcop = cx->blk_oldcop;
1463 if (optype == OP_REQUIRE) {
1464 const char* const msg = SvPVx_nolen_const(ERRSV);
1465 SV * const nsv = cx->blk_eval.old_namesv;
1466 (void)hv_store(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv),
1468 DIE(aTHX_ "%sCompilation failed in require",
1469 *msg ? msg : "Unknown error\n");
1471 assert(CxTYPE(cx) == CXt_EVAL);
1472 return cx->blk_eval.retop;
1476 message = SvPVx_const(ERRSV, msglen);
1478 write_to_stderr(message, msglen);
1487 if (SvTRUE(left) != SvTRUE(right))
1499 RETURNOP(cLOGOP->op_other);
1508 RETURNOP(cLOGOP->op_other);
1517 if (!sv || !SvANY(sv)) {
1518 RETURNOP(cLOGOP->op_other);
1521 switch (SvTYPE(sv)) {
1523 if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied)))
1527 if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied)))
1531 if (CvROOT(sv) || CvXSUB(sv))
1540 RETURNOP(cLOGOP->op_other);
1546 register I32 cxix = dopoptosub(cxstack_ix);
1547 register const PERL_CONTEXT *cx;
1548 register const PERL_CONTEXT *ccstack = cxstack;
1549 const PERL_SI *top_si = PL_curstackinfo;
1551 const char *stashname;
1558 /* we may be in a higher stacklevel, so dig down deeper */
1559 while (cxix < 0 && top_si->si_type != PERLSI_MAIN) {
1560 top_si = top_si->si_prev;
1561 ccstack = top_si->si_cxstack;
1562 cxix = dopoptosub_at(ccstack, top_si->si_cxix);
1565 if (GIMME != G_ARRAY) {
1571 /* caller() should not report the automatic calls to &DB::sub */
1572 if (PL_DBsub && GvCV(PL_DBsub) && cxix >= 0 &&
1573 ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub))
1577 cxix = dopoptosub_at(ccstack, cxix - 1);
1580 cx = &ccstack[cxix];
1581 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
1582 const I32 dbcxix = dopoptosub_at(ccstack, cxix - 1);
1583 /* We expect that ccstack[dbcxix] is CXt_SUB, anyway, the
1584 field below is defined for any cx. */
1585 /* caller() should not report the automatic calls to &DB::sub */
1586 if (PL_DBsub && GvCV(PL_DBsub) && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub))
1587 cx = &ccstack[dbcxix];
1590 stashname = CopSTASHPV(cx->blk_oldcop);
1591 if (GIMME != G_ARRAY) {
1594 PUSHs(&PL_sv_undef);
1597 sv_setpv(TARG, stashname);
1606 PUSHs(&PL_sv_undef);
1608 PUSHs(sv_2mortal(newSVpv(stashname, 0)));
1609 PUSHs(sv_2mortal(newSVpv(OutCopFILE(cx->blk_oldcop), 0)));
1610 PUSHs(sv_2mortal(newSViv((I32)CopLINE(cx->blk_oldcop))));
1613 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
1614 GV *cvgv = CvGV(ccstack[cxix].blk_sub.cv);
1615 /* So is ccstack[dbcxix]. */
1617 SV * const sv = NEWSV(49, 0);
1618 gv_efullname3(sv, cvgv, Nullch);
1619 PUSHs(sv_2mortal(sv));
1620 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1623 PUSHs(sv_2mortal(newSVpvn("(unknown)",9)));
1624 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1628 PUSHs(sv_2mortal(newSVpvn("(eval)",6)));
1629 PUSHs(sv_2mortal(newSViv(0)));
1631 gimme = (I32)cx->blk_gimme;
1632 if (gimme == G_VOID)
1633 PUSHs(&PL_sv_undef);
1635 PUSHs(sv_2mortal(newSViv(gimme & G_ARRAY)));
1636 if (CxTYPE(cx) == CXt_EVAL) {
1638 if (cx->blk_eval.old_op_type == OP_ENTEREVAL) {
1639 PUSHs(cx->blk_eval.cur_text);
1643 else if (cx->blk_eval.old_namesv) {
1644 PUSHs(sv_2mortal(newSVsv(cx->blk_eval.old_namesv)));
1647 /* eval BLOCK (try blocks have old_namesv == 0) */
1649 PUSHs(&PL_sv_undef);
1650 PUSHs(&PL_sv_undef);
1654 PUSHs(&PL_sv_undef);
1655 PUSHs(&PL_sv_undef);
1657 if (CxTYPE(cx) == CXt_SUB && cx->blk_sub.hasargs
1658 && CopSTASH_eq(PL_curcop, PL_debstash))
1660 AV * const ary = cx->blk_sub.argarray;
1661 const int off = AvARRAY(ary) - AvALLOC(ary);
1665 PL_dbargs = GvAV(gv_AVadd(tmpgv = gv_fetchpv("DB::args", TRUE,
1668 AvREAL_off(PL_dbargs); /* XXX should be REIFY (see av.h) */
1671 if (AvMAX(PL_dbargs) < AvFILLp(ary) + off)
1672 av_extend(PL_dbargs, AvFILLp(ary) + off);
1673 Copy(AvALLOC(ary), AvARRAY(PL_dbargs), AvFILLp(ary) + 1 + off, SV*);
1674 AvFILLp(PL_dbargs) = AvFILLp(ary) + off;
1676 /* XXX only hints propagated via op_private are currently
1677 * visible (others are not easily accessible, since they
1678 * use the global PL_hints) */
1679 PUSHs(sv_2mortal(newSViv((I32)cx->blk_oldcop->op_private &
1680 HINT_PRIVATE_MASK)));
1683 SV * old_warnings = cx->blk_oldcop->cop_warnings ;
1685 if (old_warnings == pWARN_NONE ||
1686 (old_warnings == pWARN_STD && (PL_dowarn & G_WARN_ON) == 0))
1687 mask = newSVpvn(WARN_NONEstring, WARNsize) ;
1688 else if (old_warnings == pWARN_ALL ||
1689 (old_warnings == pWARN_STD && PL_dowarn & G_WARN_ON)) {
1690 /* Get the bit mask for $warnings::Bits{all}, because
1691 * it could have been extended by warnings::register */
1693 HV *bits = get_hv("warnings::Bits", FALSE);
1694 if (bits && (bits_all=hv_fetch(bits, "all", 3, FALSE))) {
1695 mask = newSVsv(*bits_all);
1698 mask = newSVpvn(WARN_ALLstring, WARNsize) ;
1702 mask = newSVsv(old_warnings);
1703 PUSHs(sv_2mortal(mask));
1717 sv_reset(tmps, CopSTASH(PL_curcop));
1722 /* like pp_nextstate, but used instead when the debugger is active */
1727 PL_curcop = (COP*)PL_op;
1728 TAINT_NOT; /* Each statement is presumed innocent */
1729 PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;
1732 if (PL_op->op_flags & OPf_SPECIAL /* breakpoint */
1733 || SvIV(PL_DBsingle) || SvIV(PL_DBsignal) || SvIV(PL_DBtrace))
1737 register PERL_CONTEXT *cx;
1738 const I32 gimme = G_ARRAY;
1745 DIE(aTHX_ "No DB::DB routine defined");
1747 if (CvDEPTH(cv) >= 1 && !(PL_debug & DEBUG_DB_RECURSE_FLAG))
1748 /* don't do recursive DB::DB call */
1763 (void)(*CvXSUB(cv))(aTHX_ cv);
1770 PUSHBLOCK(cx, CXt_SUB, SP);
1772 cx->blk_sub.retop = PL_op->op_next;
1775 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
1776 RETURNOP(CvSTART(cv));
1786 register PERL_CONTEXT *cx;
1787 const I32 gimme = GIMME_V;
1789 U32 cxtype = CXt_LOOP;
1797 if (PL_op->op_targ) {
1798 if (PL_op->op_private & OPpLVAL_INTRO) { /* for my $x (...) */
1799 SvPADSTALE_off(PAD_SVl(PL_op->op_targ));
1800 SAVESETSVFLAGS(PAD_SVl(PL_op->op_targ),
1801 SVs_PADSTALE, SVs_PADSTALE);
1803 #ifndef USE_ITHREADS
1804 svp = &PAD_SVl(PL_op->op_targ); /* "my" variable */
1807 SAVEPADSV(PL_op->op_targ);
1808 iterdata = INT2PTR(void*, PL_op->op_targ);
1809 cxtype |= CXp_PADVAR;
1814 svp = &GvSV(gv); /* symbol table variable */
1815 SAVEGENERICSV(*svp);
1818 iterdata = (void*)gv;
1824 PUSHBLOCK(cx, cxtype, SP);
1826 PUSHLOOP(cx, iterdata, MARK);
1828 PUSHLOOP(cx, svp, MARK);
1830 if (PL_op->op_flags & OPf_STACKED) {
1831 cx->blk_loop.iterary = (AV*)SvREFCNT_inc(POPs);
1832 if (SvTYPE(cx->blk_loop.iterary) != SVt_PVAV) {
1834 SV *right = (SV*)cx->blk_loop.iterary;
1837 if (RANGE_IS_NUMERIC(sv,right)) {
1838 if ((SvOK(sv) && SvNV(sv) < IV_MIN) ||
1839 (SvOK(right) && SvNV(right) >= IV_MAX))
1840 DIE(aTHX_ "Range iterator outside integer range");
1841 cx->blk_loop.iterix = SvIV(sv);
1842 cx->blk_loop.itermax = SvIV(right);
1844 /* for correct -Dstv display */
1845 cx->blk_oldsp = sp - PL_stack_base;
1849 cx->blk_loop.iterlval = newSVsv(sv);
1850 (void) SvPV_force_nolen(cx->blk_loop.iterlval);
1851 (void) SvPV_nolen_const(right);
1854 else if (PL_op->op_private & OPpITER_REVERSED) {
1855 cx->blk_loop.itermax = -1;
1856 cx->blk_loop.iterix = AvFILL(cx->blk_loop.iterary);
1861 cx->blk_loop.iterary = PL_curstack;
1862 AvFILLp(PL_curstack) = SP - PL_stack_base;
1863 if (PL_op->op_private & OPpITER_REVERSED) {
1864 cx->blk_loop.itermax = MARK - PL_stack_base;
1865 cx->blk_loop.iterix = cx->blk_oldsp;
1868 cx->blk_loop.iterix = MARK - PL_stack_base;
1878 register PERL_CONTEXT *cx;
1879 const I32 gimme = GIMME_V;
1885 PUSHBLOCK(cx, CXt_LOOP, SP);
1886 PUSHLOOP(cx, 0, SP);
1894 register PERL_CONTEXT *cx;
1901 assert(CxTYPE(cx) == CXt_LOOP);
1903 newsp = PL_stack_base + cx->blk_loop.resetsp;
1906 if (gimme == G_VOID)
1908 else if (gimme == G_SCALAR) {
1910 *++newsp = sv_mortalcopy(*SP);
1912 *++newsp = &PL_sv_undef;
1916 *++newsp = sv_mortalcopy(*++mark);
1917 TAINT_NOT; /* Each item is independent */
1923 POPLOOP(cx); /* Stack values are safe: release loop vars ... */
1924 PL_curpm = newpm; /* ... and pop $1 et al */
1936 register PERL_CONTEXT *cx;
1937 bool popsub2 = FALSE;
1938 bool clear_errsv = FALSE;
1946 if (PL_curstackinfo->si_type == PERLSI_SORT) {
1947 if (cxstack_ix == PL_sortcxix
1948 || dopoptosub(cxstack_ix) <= PL_sortcxix)
1950 if (cxstack_ix > PL_sortcxix)
1951 dounwind(PL_sortcxix);
1952 AvARRAY(PL_curstack)[1] = *SP;
1953 PL_stack_sp = PL_stack_base + 1;
1958 cxix = dopoptosub(cxstack_ix);
1960 DIE(aTHX_ "Can't return outside a subroutine");
1961 if (cxix < cxstack_ix)
1965 switch (CxTYPE(cx)) {
1968 retop = cx->blk_sub.retop;
1969 cxstack_ix++; /* preserve cx entry on stack for use by POPSUB */
1972 if (!(PL_in_eval & EVAL_KEEPERR))
1975 retop = cx->blk_eval.retop;
1979 if (optype == OP_REQUIRE &&
1980 (MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) )
1982 /* Unassume the success we assumed earlier. */
1983 SV * const nsv = cx->blk_eval.old_namesv;
1984 (void)hv_delete(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv), G_DISCARD);
1985 DIE(aTHX_ "%"SVf" did not return a true value", nsv);
1990 retop = cx->blk_sub.retop;
1993 DIE(aTHX_ "panic: return");
1997 if (gimme == G_SCALAR) {
2000 if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) {
2002 *++newsp = SvREFCNT_inc(*SP);
2007 sv = SvREFCNT_inc(*SP); /* FREETMPS could clobber it */
2009 *++newsp = sv_mortalcopy(sv);
2014 *++newsp = (SvTEMP(*SP)) ? *SP : sv_mortalcopy(*SP);
2017 *++newsp = sv_mortalcopy(*SP);
2020 *++newsp = &PL_sv_undef;
2022 else if (gimme == G_ARRAY) {
2023 while (++MARK <= SP) {
2024 *++newsp = (popsub2 && SvTEMP(*MARK))
2025 ? *MARK : sv_mortalcopy(*MARK);
2026 TAINT_NOT; /* Each item is independent */
2029 PL_stack_sp = newsp;
2032 /* Stack values are safe: */
2035 POPSUB(cx,sv); /* release CV and @_ ... */
2039 PL_curpm = newpm; /* ... and pop $1 et al */
2043 sv_setpvn(ERRSV,"",0);
2051 register PERL_CONTEXT *cx;
2062 if (PL_op->op_flags & OPf_SPECIAL) {
2063 cxix = dopoptoloop(cxstack_ix);
2065 DIE(aTHX_ "Can't \"last\" outside a loop block");
2068 cxix = dopoptolabel(cPVOP->op_pv);
2070 DIE(aTHX_ "Label not found for \"last %s\"", cPVOP->op_pv);
2072 if (cxix < cxstack_ix)
2076 cxstack_ix++; /* temporarily protect top context */
2078 switch (CxTYPE(cx)) {
2081 newsp = PL_stack_base + cx->blk_loop.resetsp;
2082 nextop = cx->blk_loop.last_op->op_next;
2086 nextop = cx->blk_sub.retop;
2090 nextop = cx->blk_eval.retop;
2094 nextop = cx->blk_sub.retop;
2097 DIE(aTHX_ "panic: last");
2101 if (gimme == G_SCALAR) {
2103 *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*SP))
2104 ? *SP : sv_mortalcopy(*SP);
2106 *++newsp = &PL_sv_undef;
2108 else if (gimme == G_ARRAY) {
2109 while (++MARK <= SP) {
2110 *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*MARK))
2111 ? *MARK : sv_mortalcopy(*MARK);
2112 TAINT_NOT; /* Each item is independent */
2120 /* Stack values are safe: */
2123 POPLOOP(cx); /* release loop vars ... */
2127 POPSUB(cx,sv); /* release CV and @_ ... */
2130 PL_curpm = newpm; /* ... and pop $1 et al */
2133 PERL_UNUSED_VAR(optype);
2134 PERL_UNUSED_VAR(gimme);
2142 register PERL_CONTEXT *cx;
2145 if (PL_op->op_flags & OPf_SPECIAL) {
2146 cxix = dopoptoloop(cxstack_ix);
2148 DIE(aTHX_ "Can't \"next\" outside a loop block");
2151 cxix = dopoptolabel(cPVOP->op_pv);
2153 DIE(aTHX_ "Label not found for \"next %s\"", cPVOP->op_pv);
2155 if (cxix < cxstack_ix)
2158 /* clear off anything above the scope we're re-entering, but
2159 * save the rest until after a possible continue block */
2160 inner = PL_scopestack_ix;
2162 if (PL_scopestack_ix < inner)
2163 leave_scope(PL_scopestack[PL_scopestack_ix]);
2164 PL_curcop = cx->blk_oldcop;
2165 return cx->blk_loop.next_op;
2172 register PERL_CONTEXT *cx;
2176 if (PL_op->op_flags & OPf_SPECIAL) {
2177 cxix = dopoptoloop(cxstack_ix);
2179 DIE(aTHX_ "Can't \"redo\" outside a loop block");
2182 cxix = dopoptolabel(cPVOP->op_pv);
2184 DIE(aTHX_ "Label not found for \"redo %s\"", cPVOP->op_pv);
2186 if (cxix < cxstack_ix)
2189 redo_op = cxstack[cxix].blk_loop.redo_op;
2190 if (redo_op->op_type == OP_ENTER) {
2191 /* pop one less context to avoid $x being freed in while (my $x..) */
2193 assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_BLOCK);
2194 redo_op = redo_op->op_next;
2198 oldsave = PL_scopestack[PL_scopestack_ix - 1];
2199 LEAVE_SCOPE(oldsave);
2201 PL_curcop = cx->blk_oldcop;
2206 S_dofindlabel(pTHX_ OP *o, const char *label, OP **opstack, OP **oplimit)
2209 static const char too_deep[] = "Target of goto is too deeply nested";
2212 Perl_croak(aTHX_ too_deep);
2213 if (o->op_type == OP_LEAVE ||
2214 o->op_type == OP_SCOPE ||
2215 o->op_type == OP_LEAVELOOP ||
2216 o->op_type == OP_LEAVESUB ||
2217 o->op_type == OP_LEAVETRY)
2219 *ops++ = cUNOPo->op_first;
2221 Perl_croak(aTHX_ too_deep);
2224 if (o->op_flags & OPf_KIDS) {
2226 /* First try all the kids at this level, since that's likeliest. */
2227 for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
2228 if ((kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) &&
2229 kCOP->cop_label && strEQ(kCOP->cop_label, label))
2232 for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
2233 if (kid == PL_lastgotoprobe)
2235 if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) {
2238 else if (ops[-1]->op_type == OP_NEXTSTATE ||
2239 ops[-1]->op_type == OP_DBSTATE)
2244 if ((o = dofindlabel(kid, label, ops, oplimit)))
2257 register PERL_CONTEXT *cx;
2258 #define GOTO_DEPTH 64
2259 OP *enterops[GOTO_DEPTH];
2260 const char *label = 0;
2261 const bool do_dump = (PL_op->op_type == OP_DUMP);
2262 static const char must_have_label[] = "goto must have label";
2264 if (PL_op->op_flags & OPf_STACKED) {
2265 SV * const sv = POPs;
2267 /* This egregious kludge implements goto &subroutine */
2268 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) {
2270 register PERL_CONTEXT *cx;
2271 CV* cv = (CV*)SvRV(sv);
2278 if (!CvROOT(cv) && !CvXSUB(cv)) {
2279 const GV * const gv = CvGV(cv);
2283 /* autoloaded stub? */
2284 if (cv != GvCV(gv) && (cv = GvCV(gv)))
2286 autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv),
2287 GvNAMELEN(gv), FALSE);
2288 if (autogv && (cv = GvCV(autogv)))
2290 tmpstr = sv_newmortal();
2291 gv_efullname3(tmpstr, gv, Nullch);
2292 DIE(aTHX_ "Goto undefined subroutine &%"SVf"",tmpstr);
2294 DIE(aTHX_ "Goto undefined subroutine");
2297 /* First do some returnish stuff. */
2298 (void)SvREFCNT_inc(cv); /* avoid premature free during unwind */
2300 cxix = dopoptosub(cxstack_ix);
2302 DIE(aTHX_ "Can't goto subroutine outside a subroutine");
2303 if (cxix < cxstack_ix)
2307 /* ban goto in eval: see <20050521150056.GC20213@iabyn.com> */
2308 if (CxTYPE(cx) == CXt_EVAL) {
2310 DIE(aTHX_ "Can't goto subroutine from an eval-string");
2312 DIE(aTHX_ "Can't goto subroutine from an eval-block");
2314 if (CxTYPE(cx) == CXt_SUB && cx->blk_sub.hasargs) {
2315 /* put @_ back onto stack */
2316 AV* av = cx->blk_sub.argarray;
2318 items = AvFILLp(av) + 1;
2319 EXTEND(SP, items+1); /* @_ could have been extended. */
2320 Copy(AvARRAY(av), SP + 1, items, SV*);
2321 SvREFCNT_dec(GvAV(PL_defgv));
2322 GvAV(PL_defgv) = cx->blk_sub.savearray;
2324 /* abandon @_ if it got reified */
2329 av_extend(av, items-1);
2331 PAD_SVl(0) = (SV*)(cx->blk_sub.argarray = av);
2334 else if (CvXSUB(cv)) { /* put GvAV(defgv) back onto stack */
2335 AV* const av = GvAV(PL_defgv);
2336 items = AvFILLp(av) + 1;
2337 EXTEND(SP, items+1); /* @_ could have been extended. */
2338 Copy(AvARRAY(av), SP + 1, items, SV*);
2342 if (CxTYPE(cx) == CXt_SUB &&
2343 !(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth))
2344 SvREFCNT_dec(cx->blk_sub.cv);
2345 oldsave = PL_scopestack[PL_scopestack_ix - 1];
2346 LEAVE_SCOPE(oldsave);
2348 /* Now do some callish stuff. */
2350 SAVEFREESV(cv); /* later, undo the 'avoid premature free' hack */
2352 OP* retop = cx->blk_sub.retop;
2355 for (index=0; index<items; index++)
2356 sv_2mortal(SP[-index]);
2358 #ifdef PERL_XSUB_OLDSTYLE
2359 if (CvOLDSTYLE(cv)) {
2360 I32 (*fp3)(int,int,int);
2365 fp3 = (I32(*)(int,int,int))CvXSUB(cv);
2366 items = (*fp3)(CvXSUBANY(cv).any_i32,
2367 mark - PL_stack_base + 1,
2369 SP = PL_stack_base + items;
2372 #endif /* PERL_XSUB_OLDSTYLE */
2377 /* XS subs don't have a CxSUB, so pop it */
2378 POPBLOCK(cx, PL_curpm);
2379 /* Push a mark for the start of arglist */
2382 (void)(*CvXSUB(cv))(aTHX_ cv);
2383 /* Put these at the bottom since the vars are set but not used */
2384 PERL_UNUSED_VAR(newsp);
2385 PERL_UNUSED_VAR(gimme);
2391 AV* padlist = CvPADLIST(cv);
2392 if (CxTYPE(cx) == CXt_EVAL) {
2393 PL_in_eval = cx->blk_eval.old_in_eval;
2394 PL_eval_root = cx->blk_eval.old_eval_root;
2395 cx->cx_type = CXt_SUB;
2396 cx->blk_sub.hasargs = 0;
2398 cx->blk_sub.cv = cv;
2399 cx->blk_sub.olddepth = (U16)CvDEPTH(cv);
2402 if (CvDEPTH(cv) < 2)
2403 (void)SvREFCNT_inc(cv);
2405 if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION))
2406 sub_crush_depth(cv);
2407 pad_push(padlist, CvDEPTH(cv));
2410 PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv));
2411 if (cx->blk_sub.hasargs)
2413 AV* av = (AV*)PAD_SVl(0);
2416 cx->blk_sub.savearray = GvAV(PL_defgv);
2417 GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av);
2418 CX_CURPAD_SAVE(cx->blk_sub);
2419 cx->blk_sub.argarray = av;
2421 if (items >= AvMAX(av) + 1) {
2423 if (AvARRAY(av) != ary) {
2424 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
2425 SvPV_set(av, (char*)ary);
2427 if (items >= AvMAX(av) + 1) {
2428 AvMAX(av) = items - 1;
2429 Renew(ary,items+1,SV*);
2431 SvPV_set(av, (char*)ary);
2435 Copy(mark,AvARRAY(av),items,SV*);
2436 AvFILLp(av) = items - 1;
2437 assert(!AvREAL(av));
2439 /* transfer 'ownership' of refcnts to new @_ */
2449 if (PERLDB_SUB) { /* Checking curstash breaks DProf. */
2451 * We do not care about using sv to call CV;
2452 * it's for informational purposes only.
2454 SV * const sv = GvSV(PL_DBsub);
2458 if (PERLDB_SUB_NN) {
2459 const int type = SvTYPE(sv);
2460 if (type < SVt_PVIV && type != SVt_IV)
2461 sv_upgrade(sv, SVt_PVIV);
2463 SvIV_set(sv, PTR2IV(cv)); /* Do it the quickest way */
2465 gv_efullname3(sv, CvGV(cv), Nullch);
2468 && (gotocv = get_cv("DB::goto", FALSE)) ) {
2469 PUSHMARK( PL_stack_sp );
2470 call_sv((SV*)gotocv, G_SCALAR | G_NODEBUG);
2474 RETURNOP(CvSTART(cv));
2478 label = SvPV_nolen_const(sv);
2479 if (!(do_dump || *label))
2480 DIE(aTHX_ must_have_label);
2483 else if (PL_op->op_flags & OPf_SPECIAL) {
2485 DIE(aTHX_ must_have_label);
2488 label = cPVOP->op_pv;
2490 if (label && *label) {
2492 bool leaving_eval = FALSE;
2493 bool in_block = FALSE;
2494 PERL_CONTEXT *last_eval_cx = 0;
2498 PL_lastgotoprobe = 0;
2500 for (ix = cxstack_ix; ix >= 0; ix--) {
2502 switch (CxTYPE(cx)) {
2504 leaving_eval = TRUE;
2505 if (!CxTRYBLOCK(cx)) {
2506 gotoprobe = (last_eval_cx ?
2507 last_eval_cx->blk_eval.old_eval_root :
2512 /* else fall through */
2514 gotoprobe = cx->blk_oldcop->op_sibling;
2520 gotoprobe = cx->blk_oldcop->op_sibling;
2523 gotoprobe = PL_main_root;
2526 if (CvDEPTH(cx->blk_sub.cv)) {
2527 gotoprobe = CvROOT(cx->blk_sub.cv);
2533 DIE(aTHX_ "Can't \"goto\" out of a pseudo block");
2536 DIE(aTHX_ "panic: goto");
2537 gotoprobe = PL_main_root;
2541 retop = dofindlabel(gotoprobe, label,
2542 enterops, enterops + GOTO_DEPTH);
2546 PL_lastgotoprobe = gotoprobe;
2549 DIE(aTHX_ "Can't find label %s", label);
2551 /* if we're leaving an eval, check before we pop any frames
2552 that we're not going to punt, otherwise the error
2555 if (leaving_eval && *enterops && enterops[1]) {
2557 for (i = 1; enterops[i]; i++)
2558 if (enterops[i]->op_type == OP_ENTERITER)
2559 DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
2562 /* pop unwanted frames */
2564 if (ix < cxstack_ix) {
2571 oldsave = PL_scopestack[PL_scopestack_ix];
2572 LEAVE_SCOPE(oldsave);
2575 /* push wanted frames */
2577 if (*enterops && enterops[1]) {
2579 ix = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1;
2580 for (; enterops[ix]; ix++) {
2581 PL_op = enterops[ix];
2582 /* Eventually we may want to stack the needed arguments
2583 * for each op. For now, we punt on the hard ones. */
2584 if (PL_op->op_type == OP_ENTERITER)
2585 DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
2586 CALL_FPTR(PL_op->op_ppaddr)(aTHX);
2594 if (!retop) retop = PL_main_start;
2596 PL_restartop = retop;
2597 PL_do_undump = TRUE;
2601 PL_restartop = 0; /* hmm, must be GNU unexec().. */
2602 PL_do_undump = FALSE;
2618 if (anum == 1 && (PL_op->op_private & OPpEXIT_VMSISH))
2620 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
2623 PL_exit_flags |= PERL_EXIT_EXPECTED;
2625 PUSHs(&PL_sv_undef);
2633 const NV value = SvNVx(GvSV(cCOP->cop_gv));
2634 register I32 match = I_32(value);
2637 if (((NV)match) > value)
2638 --match; /* was fractional--truncate other way */
2640 match -= cCOP->uop.scop.scop_offset;
2643 else if (match > cCOP->uop.scop.scop_max)
2644 match = cCOP->uop.scop.scop_max;
2645 PL_op = cCOP->uop.scop.scop_next[match];
2655 PL_op = PL_op->op_next; /* can't assume anything */
2657 match = *(SvPVx_nolen_const(GvSV(cCOP->cop_gv))) & 255;
2658 match -= cCOP->uop.scop.scop_offset;
2661 else if (match > cCOP->uop.scop.scop_max)
2662 match = cCOP->uop.scop.scop_max;
2663 PL_op = cCOP->uop.scop.scop_next[match];
2672 S_save_lines(pTHX_ AV *array, SV *sv)
2674 const char *s = SvPVX_const(sv);
2675 const char * const send = SvPVX_const(sv) + SvCUR(sv);
2678 while (s && s < send) {
2680 SV * const tmpstr = NEWSV(85,0);
2682 sv_upgrade(tmpstr, SVt_PVMG);
2683 t = strchr(s, '\n');
2689 sv_setpvn(tmpstr, s, t - s);
2690 av_store(array, line++, tmpstr);
2696 S_docatch_body(pTHX)
2703 S_docatch(pTHX_ OP *o)
2706 OP * const oldop = PL_op;
2710 assert(CATCH_GET == TRUE);
2717 assert(cxstack_ix >= 0);
2718 assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL);
2719 cxstack[cxstack_ix].blk_eval.cur_top_env = PL_top_env;
2724 /* die caught by an inner eval - continue inner loop */
2726 /* NB XXX we rely on the old popped CxEVAL still being at the top
2727 * of the stack; the way die_where() currently works, this
2728 * assumption is valid. In theory The cur_top_env value should be
2729 * returned in another global, the way retop (aka PL_restartop)
2731 assert(CxTYPE(&cxstack[cxstack_ix+1]) == CXt_EVAL);
2734 && cxstack[cxstack_ix+1].blk_eval.cur_top_env == PL_top_env)
2736 PL_op = PL_restartop;
2753 Perl_sv_compile_2op(pTHX_ SV *sv, OP** startop, const char *code, PAD** padp)
2754 /* sv Text to convert to OP tree. */
2755 /* startop op_free() this to undo. */
2756 /* code Short string id of the caller. */
2758 dVAR; dSP; /* Make POPBLOCK work. */
2765 char tbuf[TYPE_DIGITS(long) + 12 + 10];
2766 char *tmpbuf = tbuf;
2769 CV* runcv = Nullcv; /* initialise to avoid compiler warnings */
2774 /* switch to eval mode */
2776 if (IN_PERL_COMPILETIME) {
2777 SAVECOPSTASH_FREE(&PL_compiling);
2778 CopSTASH_set(&PL_compiling, PL_curstash);
2780 if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
2781 SV * const sv = sv_newmortal();
2782 Perl_sv_setpvf(aTHX_ sv, "_<(%.10seval %lu)[%s:%"IVdf"]",
2783 code, (unsigned long)++PL_evalseq,
2784 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
2788 sprintf(tmpbuf, "_<(%.10s_eval %lu)", code, (unsigned long)++PL_evalseq);
2789 SAVECOPFILE_FREE(&PL_compiling);
2790 CopFILE_set(&PL_compiling, tmpbuf+2);
2791 SAVECOPLINE(&PL_compiling);
2792 CopLINE_set(&PL_compiling, 1);
2793 /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
2794 deleting the eval's FILEGV from the stash before gv_check() runs
2795 (i.e. before run-time proper). To work around the coredump that
2796 ensues, we always turn GvMULTI_on for any globals that were
2797 introduced within evals. See force_ident(). GSAR 96-10-12 */
2798 safestr = savepv(tmpbuf);
2799 SAVEDELETE(PL_defstash, safestr, strlen(safestr));
2801 #ifdef OP_IN_REGISTER
2807 /* we get here either during compilation, or via pp_regcomp at runtime */
2808 runtime = IN_PERL_RUNTIME;
2810 runcv = find_runcv(NULL);
2813 PL_op->op_type = OP_ENTEREVAL;
2814 PL_op->op_flags = 0; /* Avoid uninit warning. */
2815 PUSHBLOCK(cx, CXt_EVAL|(IN_PERL_COMPILETIME ? 0 : CXp_REAL), SP);
2816 PUSHEVAL(cx, 0, Nullgv);
2819 rop = doeval(G_SCALAR, startop, runcv, PL_curcop->cop_seq);
2821 rop = doeval(G_SCALAR, startop, PL_compcv, PL_cop_seqmax);
2822 POPBLOCK(cx,PL_curpm);
2825 (*startop)->op_type = OP_NULL;
2826 (*startop)->op_ppaddr = PL_ppaddr[OP_NULL];
2828 /* XXX DAPM do this properly one year */
2829 *padp = (AV*)SvREFCNT_inc(PL_comppad);
2831 if (IN_PERL_COMPILETIME)
2832 PL_compiling.op_private = (U8)(PL_hints & HINT_PRIVATE_MASK);
2833 #ifdef OP_IN_REGISTER
2836 PERL_UNUSED_VAR(newsp);
2837 PERL_UNUSED_VAR(optype);
2844 =for apidoc find_runcv
2846 Locate the CV corresponding to the currently executing sub or eval.
2847 If db_seqp is non_null, skip CVs that are in the DB package and populate
2848 *db_seqp with the cop sequence number at the point that the DB:: code was
2849 entered. (allows debuggers to eval in the scope of the breakpoint rather
2850 than in the scope of the debugger itself).
2856 Perl_find_runcv(pTHX_ U32 *db_seqp)
2861 *db_seqp = PL_curcop->cop_seq;
2862 for (si = PL_curstackinfo; si; si = si->si_prev) {
2864 for (ix = si->si_cxix; ix >= 0; ix--) {
2865 const PERL_CONTEXT *cx = &(si->si_cxstack[ix]);
2866 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
2867 CV * const cv = cx->blk_sub.cv;
2868 /* skip DB:: code */
2869 if (db_seqp && PL_debstash && CvSTASH(cv) == PL_debstash) {
2870 *db_seqp = cx->blk_oldcop->cop_seq;
2875 else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx))
2883 /* Compile a require/do, an eval '', or a /(?{...})/.
2884 * In the last case, startop is non-null, and contains the address of
2885 * a pointer that should be set to the just-compiled code.
2886 * outside is the lexically enclosing CV (if any) that invoked us.
2889 /* With USE_5005THREADS, eval_owner must be held on entry to doeval */
2891 S_doeval(pTHX_ int gimme, OP** startop, CV* outside, U32 seq)
2894 OP * const saveop = PL_op;
2896 PL_in_eval = ((saveop && saveop->op_type == OP_REQUIRE)
2897 ? (EVAL_INREQUIRE | (PL_in_eval & EVAL_INEVAL))
2902 SAVESPTR(PL_compcv);
2903 PL_compcv = (CV*)NEWSV(1104,0);
2904 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2905 CvEVAL_on(PL_compcv);
2906 assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL);
2907 cxstack[cxstack_ix].blk_eval.cv = PL_compcv;
2909 CvOUTSIDE_SEQ(PL_compcv) = seq;
2910 CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outside);
2912 /* set up a scratch pad */
2914 CvPADLIST(PL_compcv) = pad_new(padnew_SAVE);
2917 SAVEMORTALIZESV(PL_compcv); /* must remain until end of current statement */
2919 /* make sure we compile in the right package */
2921 if (CopSTASH_ne(PL_curcop, PL_curstash)) {
2922 SAVESPTR(PL_curstash);
2923 PL_curstash = CopSTASH(PL_curcop);
2925 SAVESPTR(PL_beginav);
2926 PL_beginav = newAV();
2927 SAVEFREESV(PL_beginav);
2928 SAVEI32(PL_error_count);
2930 /* try to compile it */
2932 PL_eval_root = Nullop;
2934 PL_curcop = &PL_compiling;
2935 PL_curcop->cop_arybase = 0;
2936 if (saveop && saveop->op_flags & OPf_SPECIAL)
2937 PL_in_eval |= EVAL_KEEPERR;
2939 sv_setpvn(ERRSV,"",0);
2940 if (yyparse() || PL_error_count || !PL_eval_root) {
2941 SV **newsp; /* Used by POPBLOCK. */
2942 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
2943 I32 optype = 0; /* Might be reset by POPEVAL. */
2948 op_free(PL_eval_root);
2949 PL_eval_root = Nullop;
2951 SP = PL_stack_base + POPMARK; /* pop original mark */
2953 POPBLOCK(cx,PL_curpm);
2959 msg = SvPVx_nolen_const(ERRSV);
2960 if (optype == OP_REQUIRE) {
2961 const SV * const nsv = cx->blk_eval.old_namesv;
2962 (void)hv_store(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv),
2964 DIE(aTHX_ "%sCompilation failed in require",
2965 *msg ? msg : "Unknown error\n");
2968 POPBLOCK(cx,PL_curpm);
2970 Perl_croak(aTHX_ "%sCompilation failed in regexp",
2971 (*msg ? msg : "Unknown error\n"));
2975 sv_setpv(ERRSV, "Compilation error");
2978 PERL_UNUSED_VAR(newsp);
2981 CopLINE_set(&PL_compiling, 0);
2983 *startop = PL_eval_root;
2985 SAVEFREEOP(PL_eval_root);
2987 /* Set the context for this new optree.
2988 * If the last op is an OP_REQUIRE, force scalar context.
2989 * Otherwise, propagate the context from the eval(). */
2990 if (PL_eval_root->op_type == OP_LEAVEEVAL
2991 && cUNOPx(PL_eval_root)->op_first->op_type == OP_LINESEQ
2992 && cLISTOPx(cUNOPx(PL_eval_root)->op_first)->op_last->op_type
2994 scalar(PL_eval_root);
2995 else if (gimme & G_VOID)
2996 scalarvoid(PL_eval_root);
2997 else if (gimme & G_ARRAY)
3000 scalar(PL_eval_root);
3002 DEBUG_x(dump_eval());
3004 /* Register with debugger: */
3005 if (PERLDB_INTER && saveop->op_type == OP_REQUIRE) {
3006 CV * const cv = get_cv("DB::postponed", FALSE);
3010 XPUSHs((SV*)CopFILEGV(&PL_compiling));
3012 call_sv((SV*)cv, G_DISCARD);
3016 /* compiled okay, so do it */
3018 CvDEPTH(PL_compcv) = 1;
3019 SP = PL_stack_base + POPMARK; /* pop original mark */
3020 PL_op = saveop; /* The caller may need it. */
3021 PL_lex_state = LEX_NOTPARSING; /* $^S needs this. */
3023 RETURNOP(PL_eval_start);
3027 S_doopen_pm(pTHX_ const char *name, const char *mode)
3029 #ifndef PERL_DISABLE_PMC
3030 const STRLEN namelen = strlen(name);
3033 if (namelen > 3 && strEQ(name + namelen - 3, ".pm")) {
3034 SV * const pmcsv = Perl_newSVpvf(aTHX_ "%s%c", name, 'c');
3035 const char * const pmc = SvPV_nolen_const(pmcsv);
3037 if (PerlLIO_stat(pmc, &pmcstat) < 0) {
3038 fp = PerlIO_open(name, mode);
3042 if (PerlLIO_stat(name, &pmstat) < 0 ||
3043 pmstat.st_mtime < pmcstat.st_mtime)
3045 fp = PerlIO_open(pmc, mode);
3048 fp = PerlIO_open(name, mode);
3051 SvREFCNT_dec(pmcsv);
3054 fp = PerlIO_open(name, mode);
3058 return PerlIO_open(name, mode);
3059 #endif /* !PERL_DISABLE_PMC */
3065 register PERL_CONTEXT *cx;
3069 const char *tryname = Nullch;
3070 SV *namesv = Nullsv;
3071 const I32 gimme = GIMME_V;
3072 PerlIO *tryrsfp = 0;
3073 int filter_has_file = 0;
3074 GV *filter_child_proc = 0;
3075 SV *filter_state = 0;
3082 if ( (SvNIOKp(sv) || SvVOK(sv)) && PL_op->op_type != OP_DOFILE) {
3083 if ( SvVOK(sv) && ckWARN(WARN_PORTABLE) ) /* require v5.6.1 */
3084 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
3085 "v-string in use/require non-portable");
3087 sv = new_version(sv);
3088 if (!sv_derived_from(PL_patchlevel, "version"))
3089 (void *)upg_version(PL_patchlevel);
3090 if (cUNOP->op_first->op_type == OP_CONST && cUNOP->op_first->op_private & OPpCONST_NOVER) {
3091 if ( vcmp(sv,PL_patchlevel) < 0 )
3092 DIE(aTHX_ "Perls since %"SVf" too modern--this is %"SVf", stopped",
3093 vnormal(sv), vnormal(PL_patchlevel));
3096 if ( vcmp(sv,PL_patchlevel) > 0 )
3097 DIE(aTHX_ "Perl %"SVf" required--this is only %"SVf", stopped",
3098 vnormal(sv), vnormal(PL_patchlevel));
3103 name = SvPV_const(sv, len);
3104 if (!(name && len > 0 && *name))
3105 DIE(aTHX_ "Null filename used");
3106 TAINT_PROPER("require");
3107 if (PL_op->op_type == OP_REQUIRE) {
3108 SV ** const svp = hv_fetch(GvHVn(PL_incgv), name, len, 0);
3110 if (*svp != &PL_sv_undef)
3113 DIE(aTHX_ "Compilation failed in require");
3117 /* prepare to compile file */
3119 if (path_is_absolute(name)) {
3121 tryrsfp = doopen_pm(name,PERL_SCRIPT_MODE);
3123 #ifdef MACOS_TRADITIONAL
3127 MacPerl_CanonDir(name, newname, 1);
3128 if (path_is_absolute(newname)) {
3130 tryrsfp = doopen_pm(newname,PERL_SCRIPT_MODE);
3135 AV * const ar = GvAVn(PL_incgv);
3139 if ((unixname = tounixspec(name, Nullch)) != Nullch)
3142 namesv = NEWSV(806, 0);
3143 for (i = 0; i <= AvFILL(ar); i++) {
3144 SV *dirsv = *av_fetch(ar, i, TRUE);
3150 if (SvTYPE(SvRV(loader)) == SVt_PVAV
3151 && !sv_isobject(loader))
3153 loader = *av_fetch((AV *)SvRV(loader), 0, TRUE);
3156 Perl_sv_setpvf(aTHX_ namesv, "/loader/0x%"UVxf"/%s",
3157 PTR2UV(SvRV(dirsv)), name);
3158 tryname = SvPVX_const(namesv);
3169 if (sv_isobject(loader))
3170 count = call_method("INC", G_ARRAY);
3172 count = call_sv(loader, G_ARRAY);
3182 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVGV) {
3186 if (SvTYPE(arg) == SVt_PVGV) {
3187 IO *io = GvIO((GV *)arg);
3192 tryrsfp = IoIFP(io);
3193 if (IoTYPE(io) == IoTYPE_PIPE) {
3194 /* reading from a child process doesn't
3195 nest -- when returning from reading
3196 the inner module, the outer one is
3197 unreadable (closed?) I've tried to
3198 save the gv to manage the lifespan of
3199 the pipe, but this didn't help. XXX */
3200 filter_child_proc = (GV *)arg;
3201 (void)SvREFCNT_inc(filter_child_proc);
3204 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
3205 PerlIO_close(IoOFP(io));
3217 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVCV) {
3219 (void)SvREFCNT_inc(filter_sub);
3222 filter_state = SP[i];
3223 (void)SvREFCNT_inc(filter_state);
3227 tryrsfp = PerlIO_open("/dev/null",
3243 filter_has_file = 0;
3244 if (filter_child_proc) {
3245 SvREFCNT_dec(filter_child_proc);
3246 filter_child_proc = 0;
3249 SvREFCNT_dec(filter_state);
3253 SvREFCNT_dec(filter_sub);
3258 if (!path_is_absolute(name)
3259 #ifdef MACOS_TRADITIONAL
3260 /* We consider paths of the form :a:b ambiguous and interpret them first
3261 as global then as local
3263 || (*name == ':' && name[1] != ':' && strchr(name+2, ':'))
3266 const char *dir = SvPVx_nolen_const(dirsv);
3267 #ifdef MACOS_TRADITIONAL
3271 MacPerl_CanonDir(name, buf2, 1);
3272 Perl_sv_setpvf(aTHX_ namesv, "%s%s", MacPerl_CanonDir(dir, buf1, 0), buf2+(buf2[0] == ':'));
3276 if ((unixdir = tounixpath(dir, Nullch)) == Nullch)
3278 sv_setpv(namesv, unixdir);
3279 sv_catpv(namesv, unixname);
3281 # ifdef __SYMBIAN32__
3282 if (PL_origfilename[0] &&
3283 PL_origfilename[1] == ':' &&
3284 !(dir[0] && dir[1] == ':'))
3285 Perl_sv_setpvf(aTHX_ namesv,
3290 Perl_sv_setpvf(aTHX_ namesv,
3294 Perl_sv_setpvf(aTHX_ namesv, "%s/%s", dir, name);
3298 TAINT_PROPER("require");
3299 tryname = SvPVX_const(namesv);
3300 tryrsfp = doopen_pm(tryname, PERL_SCRIPT_MODE);
3302 if (tryname[0] == '.' && tryname[1] == '/')
3311 SAVECOPFILE_FREE(&PL_compiling);
3312 CopFILE_set(&PL_compiling, tryrsfp ? tryname : name);
3313 SvREFCNT_dec(namesv);
3315 if (PL_op->op_type == OP_REQUIRE) {
3316 const char *msgstr = name;
3317 if(errno == EMFILE) {
3318 SV * const msg = sv_2mortal(newSVpv(msgstr,0));
3319 sv_catpv(msg, ": ");
3320 sv_catpv(msg, Strerror(errno));
3321 msgstr = SvPV_nolen_const(msg);
3323 if (namesv) { /* did we lookup @INC? */
3324 SV * const msg = sv_2mortal(newSVpv(msgstr,0));
3325 SV * const dirmsgsv = NEWSV(0, 0);
3326 AV * const ar = GvAVn(PL_incgv);
3328 sv_catpvn(msg, " in @INC", 8);
3329 if (instr(SvPVX_const(msg), ".h "))
3330 sv_catpv(msg, " (change .h to .ph maybe?)");
3331 if (instr(SvPVX_const(msg), ".ph "))
3332 sv_catpv(msg, " (did you run h2ph?)");
3333 sv_catpv(msg, " (@INC contains:");
3334 for (i = 0; i <= AvFILL(ar); i++) {
3335 const char *dir = SvPVx_nolen_const(*av_fetch(ar, i, TRUE));
3336 Perl_sv_setpvf(aTHX_ dirmsgsv, " %s", dir);
3337 sv_catsv(msg, dirmsgsv);
3339 sv_catpvn(msg, ")", 1);
3340 SvREFCNT_dec(dirmsgsv);
3341 msgstr = SvPV_nolen_const(msg);
3344 DIE(aTHX_ "Can't locate %s", msgstr);
3350 SETERRNO(0, SS_NORMAL);
3352 /* Assume success here to prevent recursive requirement. */
3354 /* Check whether a hook in @INC has already filled %INC */
3356 (void)hv_store(GvHVn(PL_incgv), name, len, newSVpv(CopFILE(&PL_compiling),0),0);
3358 SV** const svp = hv_fetch(GvHVn(PL_incgv), name, len, 0);
3360 (void)hv_store(GvHVn(PL_incgv), name, len, SvREFCNT_inc(hook_sv), 0 );
3365 lex_start(sv_2mortal(newSVpvn("",0)));
3366 SAVEGENERICSV(PL_rsfp_filters);
3367 PL_rsfp_filters = Nullav;
3372 SAVESPTR(PL_compiling.cop_warnings);
3373 if (PL_dowarn & G_WARN_ALL_ON)
3374 PL_compiling.cop_warnings = pWARN_ALL ;
3375 else if (PL_dowarn & G_WARN_ALL_OFF)
3376 PL_compiling.cop_warnings = pWARN_NONE ;
3377 else if (PL_taint_warn)
3378 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
3380 PL_compiling.cop_warnings = pWARN_STD ;
3381 SAVESPTR(PL_compiling.cop_io);
3382 PL_compiling.cop_io = Nullsv;
3384 if (filter_sub || filter_child_proc) {
3385 SV * const datasv = filter_add(run_user_filter, Nullsv);
3386 IoLINES(datasv) = filter_has_file;
3387 IoFMT_GV(datasv) = (GV *)filter_child_proc;
3388 IoTOP_GV(datasv) = (GV *)filter_state;
3389 IoBOTTOM_GV(datasv) = (GV *)filter_sub;
3392 /* switch to eval mode */
3393 PUSHBLOCK(cx, CXt_EVAL, SP);
3394 PUSHEVAL(cx, name, Nullgv);
3395 cx->blk_eval.retop = PL_op->op_next;
3397 SAVECOPLINE(&PL_compiling);
3398 CopLINE_set(&PL_compiling, 0);
3402 /* Store and reset encoding. */
3403 encoding = PL_encoding;
3404 PL_encoding = Nullsv;
3406 op = DOCATCH(doeval(gimme, NULL, Nullcv, PL_curcop->cop_seq));
3408 /* Restore encoding. */
3409 PL_encoding = encoding;
3417 register PERL_CONTEXT *cx;
3419 const I32 gimme = GIMME_V;
3420 const I32 was = PL_sub_generation;
3421 char tbuf[TYPE_DIGITS(long) + 12];
3422 char *tmpbuf = tbuf;
3429 if (!SvPV_const(sv,len))
3431 TAINT_PROPER("eval");
3437 /* switch to eval mode */
3439 if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
3440 SV * const sv = sv_newmortal();
3441 Perl_sv_setpvf(aTHX_ sv, "_<(eval %lu)[%s:%"IVdf"]",
3442 (unsigned long)++PL_evalseq,
3443 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
3447 sprintf(tmpbuf, "_<(eval %lu)", (unsigned long)++PL_evalseq);
3448 SAVECOPFILE_FREE(&PL_compiling);
3449 CopFILE_set(&PL_compiling, tmpbuf+2);
3450 SAVECOPLINE(&PL_compiling);
3451 CopLINE_set(&PL_compiling, 1);
3452 /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
3453 deleting the eval's FILEGV from the stash before gv_check() runs
3454 (i.e. before run-time proper). To work around the coredump that
3455 ensues, we always turn GvMULTI_on for any globals that were
3456 introduced within evals. See force_ident(). GSAR 96-10-12 */
3457 safestr = savepv(tmpbuf);
3458 SAVEDELETE(PL_defstash, safestr, strlen(safestr));
3460 PL_hints = PL_op->op_targ;
3461 SAVESPTR(PL_compiling.cop_warnings);
3462 if (specialWARN(PL_curcop->cop_warnings))
3463 PL_compiling.cop_warnings = PL_curcop->cop_warnings;
3465 PL_compiling.cop_warnings = newSVsv(PL_curcop->cop_warnings);
3466 SAVEFREESV(PL_compiling.cop_warnings);
3468 SAVESPTR(PL_compiling.cop_io);
3469 if (specialCopIO(PL_curcop->cop_io))
3470 PL_compiling.cop_io = PL_curcop->cop_io;
3472 PL_compiling.cop_io = newSVsv(PL_curcop->cop_io);
3473 SAVEFREESV(PL_compiling.cop_io);
3475 /* special case: an eval '' executed within the DB package gets lexically
3476 * placed in the first non-DB CV rather than the current CV - this
3477 * allows the debugger to execute code, find lexicals etc, in the
3478 * scope of the code being debugged. Passing &seq gets find_runcv
3479 * to do the dirty work for us */
3480 runcv = find_runcv(&seq);
3482 PUSHBLOCK(cx, (CXt_EVAL|CXp_REAL), SP);
3483 PUSHEVAL(cx, 0, Nullgv);
3484 cx->blk_eval.retop = PL_op->op_next;
3486 /* prepare to compile string */
3488 if (PERLDB_LINE && PL_curstash != PL_debstash)
3489 save_lines(CopFILEAV(&PL_compiling), PL_linestr);
3491 ret = doeval(gimme, NULL, runcv, seq);
3492 if (PERLDB_INTER && was != (I32)PL_sub_generation /* Some subs defined here. */
3493 && ret != PL_op->op_next) { /* Successive compilation. */
3494 strcpy(safestr, "_<(eval )"); /* Anything fake and short. */
3496 return DOCATCH(ret);
3506 register PERL_CONTEXT *cx;
3508 const U8 save_flags = PL_op -> op_flags;
3513 retop = cx->blk_eval.retop;
3516 if (gimme == G_VOID)
3518 else if (gimme == G_SCALAR) {
3521 if (SvFLAGS(TOPs) & SVs_TEMP)
3524 *MARK = sv_mortalcopy(TOPs);
3528 *MARK = &PL_sv_undef;
3533 /* in case LEAVE wipes old return values */
3534 for (mark = newsp + 1; mark <= SP; mark++) {
3535 if (!(SvFLAGS(*mark) & SVs_TEMP)) {
3536 *mark = sv_mortalcopy(*mark);
3537 TAINT_NOT; /* Each item is independent */
3541 PL_curpm = newpm; /* Don't pop $1 et al till now */
3544 assert(CvDEPTH(PL_compcv) == 1);
3546 CvDEPTH(PL_compcv) = 0;
3549 if (optype == OP_REQUIRE &&
3550 !(gimme == G_SCALAR ? SvTRUE(*SP) : SP > newsp))
3552 /* Unassume the success we assumed earlier. */
3553 SV * const nsv = cx->blk_eval.old_namesv;
3554 (void)hv_delete(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv), G_DISCARD);
3555 retop = Perl_die(aTHX_ "%"SVf" did not return a true value", nsv);
3556 /* die_where() did LEAVE, or we won't be here */
3560 if (!(save_flags & OPf_SPECIAL))
3561 sv_setpvn(ERRSV,"",0);
3570 register PERL_CONTEXT *cx;
3571 const I32 gimme = GIMME_V;
3576 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), SP);
3578 cx->blk_eval.retop = cLOGOP->op_other->op_next;
3580 PL_in_eval = EVAL_INEVAL;
3581 sv_setpvn(ERRSV,"",0);
3583 return DOCATCH(PL_op->op_next);
3593 register PERL_CONTEXT *cx;
3598 PERL_UNUSED_VAR(optype);
3601 if (gimme == G_VOID)
3603 else if (gimme == G_SCALAR) {
3606 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
3609 *MARK = sv_mortalcopy(TOPs);
3613 *MARK = &PL_sv_undef;
3618 /* in case LEAVE wipes old return values */
3619 for (mark = newsp + 1; mark <= SP; mark++) {
3620 if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) {
3621 *mark = sv_mortalcopy(*mark);
3622 TAINT_NOT; /* Each item is independent */
3626 PL_curpm = newpm; /* Don't pop $1 et al till now */
3629 sv_setpvn(ERRSV,"",0);
3634 S_doparseform(pTHX_ SV *sv)
3637 register char *s = SvPV_force(sv, len);
3638 register char *send = s + len;
3639 register char *base = Nullch;
3640 register I32 skipspaces = 0;
3641 bool noblank = FALSE;
3642 bool repeat = FALSE;
3643 bool postspace = FALSE;
3649 bool unchopnum = FALSE;
3650 int maxops = 12; /* FF_LINEMARK + FF_END + 10 (\0 without preceding \n) */
3653 Perl_croak(aTHX_ "Null picture in formline");
3655 /* estimate the buffer size needed */
3656 for (base = s; s <= send; s++) {
3657 if (*s == '\n' || *s == '@' || *s == '^')
3663 Newx(fops, maxops, U32);
3668 *fpc++ = FF_LINEMARK;
3669 noblank = repeat = FALSE;
3687 case ' ': case '\t':
3694 } /* else FALL THROUGH */
3702 *fpc++ = FF_LITERAL;
3710 *fpc++ = (U16)skipspaces;
3714 *fpc++ = FF_NEWLINE;
3718 arg = fpc - linepc + 1;
3725 *fpc++ = FF_LINEMARK;
3726 noblank = repeat = FALSE;
3735 ischop = s[-1] == '^';
3741 arg = (s - base) - 1;
3743 *fpc++ = FF_LITERAL;
3751 *fpc++ = 2; /* skip the @* or ^* */
3753 *fpc++ = FF_LINESNGL;
3756 *fpc++ = FF_LINEGLOB;
3758 else if (*s == '#' || (*s == '.' && s[1] == '#')) {
3759 arg = ischop ? 512 : 0;
3764 const char * const f = ++s;
3767 arg |= 256 + (s - f);
3769 *fpc++ = s - base; /* fieldsize for FETCH */
3770 *fpc++ = FF_DECIMAL;
3772 unchopnum |= ! ischop;
3774 else if (*s == '0' && s[1] == '#') { /* Zero padded decimals */
3775 arg = ischop ? 512 : 0;
3777 s++; /* skip the '0' first */
3781 const char * const f = ++s;
3784 arg |= 256 + (s - f);
3786 *fpc++ = s - base; /* fieldsize for FETCH */
3787 *fpc++ = FF_0DECIMAL;
3789 unchopnum |= ! ischop;
3793 bool ismore = FALSE;
3796 while (*++s == '>') ;
3797 prespace = FF_SPACE;
3799 else if (*s == '|') {
3800 while (*++s == '|') ;
3801 prespace = FF_HALFSPACE;
3806 while (*++s == '<') ;
3809 if (*s == '.' && s[1] == '.' && s[2] == '.') {
3813 *fpc++ = s - base; /* fieldsize for FETCH */
3815 *fpc++ = ischop ? FF_CHECKCHOP : FF_CHECKNL;
3818 *fpc++ = (U16)prespace;
3832 assert (fpc <= fops + maxops); /* ensure our buffer estimate was valid */
3834 { /* need to jump to the next word */
3836 z = WORD_ALIGN - SvCUR(sv) % WORD_ALIGN;
3837 SvGROW(sv, SvCUR(sv) + z + arg * sizeof(U32) + 4);
3838 s = SvPVX(sv) + SvCUR(sv) + z;
3840 Copy(fops, s, arg, U32);
3842 sv_magic(sv, Nullsv, PERL_MAGIC_fm, Nullch, 0);
3845 if (unchopnum && repeat)
3846 DIE(aTHX_ "Repeated format line will never terminate (~~ and @#)");
3852 S_num_overflow(NV value, I32 fldsize, I32 frcsize)
3854 /* Can value be printed in fldsize chars, using %*.*f ? */
3858 int intsize = fldsize - (value < 0 ? 1 : 0);
3865 while (intsize--) pwr *= 10.0;
3866 while (frcsize--) eps /= 10.0;
3869 if (value + eps >= pwr)
3872 if (value - eps <= -pwr)
3879 run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen)
3882 SV *datasv = FILTER_DATA(idx);
3883 const int filter_has_file = IoLINES(datasv);
3884 GV *filter_child_proc = (GV *)IoFMT_GV(datasv);
3885 SV *filter_state = (SV *)IoTOP_GV(datasv);
3886 SV *filter_sub = (SV *)IoBOTTOM_GV(datasv);
3889 /* I was having segfault trouble under Linux 2.2.5 after a
3890 parse error occured. (Had to hack around it with a test
3891 for PL_error_count == 0.) Solaris doesn't segfault --
3892 not sure where the trouble is yet. XXX */
3894 if (filter_has_file) {
3895 len = FILTER_READ(idx+1, buf_sv, maxlen);
3898 if (filter_sub && len >= 0) {
3909 PUSHs(sv_2mortal(newSViv(maxlen)));
3911 PUSHs(filter_state);
3914 count = call_sv(filter_sub, G_SCALAR);
3930 IoLINES(datasv) = 0;
3931 if (filter_child_proc) {
3932 SvREFCNT_dec(filter_child_proc);
3933 IoFMT_GV(datasv) = Nullgv;
3936 SvREFCNT_dec(filter_state);
3937 IoTOP_GV(datasv) = Nullgv;
3940 SvREFCNT_dec(filter_sub);
3941 IoBOTTOM_GV(datasv) = Nullgv;
3943 filter_del(run_user_filter);
3949 /* perhaps someone can come up with a better name for
3950 this? it is not really "absolute", per se ... */
3952 S_path_is_absolute(pTHX_ const char *name)
3954 if (PERL_FILE_IS_ABSOLUTE(name)
3955 #ifdef MACOS_TRADITIONAL
3958 || (*name == '.' && (name[1] == '/' ||
3959 (name[1] == '.' && name[2] == '/'))))
3970 * c-indentation-style: bsd
3972 * indent-tabs-mode: t
3975 * ex: set ts=8 sts=4 sw=4 noet: