3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 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))
48 cxix = dopoptosub(cxstack_ix);
52 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. */
76 register PMOP *pm = (PMOP*)cLOGOP->op_other;
80 /* prevent recompiling under /o and ithreads. */
81 #if defined(USE_ITHREADS)
82 if (pm->op_pmflags & PMf_KEEP && PM_GETRE(pm)) {
83 if (PL_op->op_flags & OPf_STACKED) {
92 if (PL_op->op_flags & OPf_STACKED) {
93 /* multiple args; concatentate them */
95 tmpstr = PAD_SV(ARGTARG);
96 sv_setpvn(tmpstr, "", 0);
97 while (++MARK <= SP) {
98 if (PL_amagic_generation) {
100 if ((SvAMAGIC(tmpstr) || SvAMAGIC(*MARK)) &&
101 (sv = amagic_call(tmpstr, *MARK, concat_amg, AMGf_assign)))
103 sv_setsv(tmpstr, sv);
107 sv_catsv(tmpstr, *MARK);
116 SV *sv = SvRV(tmpstr);
118 mg = mg_find(sv, PERL_MAGIC_qr);
121 regexp * const re = (regexp *)mg->mg_obj;
122 ReREFCNT_dec(PM_GETRE(pm));
123 PM_SETRE(pm, ReREFCNT_inc(re));
127 const char *t = SvPV_const(tmpstr, len);
129 /* Check against the last compiled regexp. */
130 if (!PM_GETRE(pm) || !PM_GETRE(pm)->precomp ||
131 PM_GETRE(pm)->prelen != (I32)len ||
132 memNE(PM_GETRE(pm)->precomp, t, len))
135 ReREFCNT_dec(PM_GETRE(pm));
136 PM_SETRE(pm, NULL); /* crucial if regcomp aborts */
138 if (PL_op->op_flags & OPf_SPECIAL)
139 PL_reginterp_cnt = I32_MAX; /* Mark as safe. */
141 pm->op_pmflags = pm->op_pmpermflags; /* reset case sensitivity */
143 pm->op_pmdynflags |= PMdf_DYN_UTF8;
145 pm->op_pmdynflags &= ~PMdf_DYN_UTF8;
146 if (pm->op_pmdynflags & PMdf_UTF8)
147 t = (char*)bytes_to_utf8((U8*)t, &len);
149 PM_SETRE(pm, CALLREGCOMP(aTHX_ (char *)t, (char *)t + len, pm));
150 if (!DO_UTF8(tmpstr) && (pm->op_pmdynflags & PMdf_UTF8))
152 PL_reginterp_cnt = 0; /* XXXX Be extra paranoid - needed
153 inside tie/overload accessors. */
157 #ifndef INCOMPLETE_TAINTS
160 pm->op_pmdynflags |= PMdf_TAINTED;
162 pm->op_pmdynflags &= ~PMdf_TAINTED;
166 if (!PM_GETRE(pm)->prelen && PL_curpm)
168 else if (strEQ("\\s+", PM_GETRE(pm)->precomp))
169 pm->op_pmflags |= PMf_WHITE;
171 pm->op_pmflags &= ~PMf_WHITE;
173 /* XXX runtime compiled output needs to move to the pad */
174 if (pm->op_pmflags & PMf_KEEP) {
175 pm->op_private &= ~OPpRUNTIME; /* no point compiling again */
176 #if !defined(USE_ITHREADS)
177 /* XXX can't change the optree at runtime either */
178 cLOGOP->op_first->op_next = PL_op->op_next;
188 register PERL_CONTEXT *cx = &cxstack[cxstack_ix];
189 register PMOP * const pm = (PMOP*) cLOGOP->op_other;
190 register SV * const dstr = cx->sb_dstr;
191 register char *s = cx->sb_s;
192 register char *m = cx->sb_m;
193 char *orig = cx->sb_orig;
194 register REGEXP * const rx = cx->sb_rx;
196 REGEXP *old = PM_GETRE(pm);
203 rxres_restore(&cx->sb_rxres, rx);
204 RX_MATCH_UTF8_set(rx, DO_UTF8(cx->sb_targ));
206 if (cx->sb_iters++) {
207 const I32 saviters = cx->sb_iters;
208 if (cx->sb_iters > cx->sb_maxiters)
209 DIE(aTHX_ "Substitution loop");
211 if (!(cx->sb_rxtainted & 2) && SvTAINTED(TOPs))
212 cx->sb_rxtainted |= 2;
213 sv_catsv(dstr, POPs);
214 FREETMPS; /* Prevent excess tmp stack */
217 if (cx->sb_once || !CALLREGEXEC(aTHX_ rx, s, cx->sb_strend, orig,
218 s == m, cx->sb_targ, NULL,
219 ((cx->sb_rflags & REXEC_COPY_STR)
220 ? (REXEC_IGNOREPOS|REXEC_NOT_FIRST)
221 : (REXEC_COPY_STR|REXEC_IGNOREPOS|REXEC_NOT_FIRST))))
223 SV * const targ = cx->sb_targ;
225 assert(cx->sb_strend >= s);
226 if(cx->sb_strend > s) {
227 if (DO_UTF8(dstr) && !SvUTF8(targ))
228 sv_catpvn_utf8_upgrade(dstr, s, cx->sb_strend - s, nsv);
230 sv_catpvn(dstr, s, cx->sb_strend - s);
232 cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
234 #ifdef PERL_OLD_COPY_ON_WRITE
236 sv_force_normal_flags(targ, SV_COW_DROP_PV);
242 SvPV_set(targ, SvPVX(dstr));
243 SvCUR_set(targ, SvCUR(dstr));
244 SvLEN_set(targ, SvLEN(dstr));
247 SvPV_set(dstr, NULL);
250 TAINT_IF(cx->sb_rxtainted & 1);
251 PUSHs(sv_2mortal(newSViv(saviters - 1)));
253 (void)SvPOK_only_UTF8(targ);
254 TAINT_IF(cx->sb_rxtainted);
258 LEAVE_SCOPE(cx->sb_oldsave);
261 RETURNOP(pm->op_next);
263 cx->sb_iters = saviters;
265 if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) {
268 cx->sb_orig = orig = rx->subbeg;
270 cx->sb_strend = s + (cx->sb_strend - m);
272 cx->sb_m = m = rx->startp[0] + orig;
274 if (DO_UTF8(dstr) && !SvUTF8(cx->sb_targ))
275 sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv);
277 sv_catpvn(dstr, s, m-s);
279 cx->sb_s = rx->endp[0] + orig;
280 { /* Update the pos() information. */
281 SV * const sv = cx->sb_targ;
284 if (SvTYPE(sv) < SVt_PVMG)
285 SvUPGRADE(sv, SVt_PVMG);
286 if (!(mg = mg_find(sv, PERL_MAGIC_regex_global))) {
287 #ifdef PERL_OLD_COPY_ON_WRITE
289 sv_force_normal_flags(sv, 0);
291 mg = sv_magicext(sv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob,
300 (void)ReREFCNT_inc(rx);
301 cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
302 rxres_save(&cx->sb_rxres, rx);
303 RETURNOP(pm->op_pmreplstart);
307 Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx)
313 if (!p || p[1] < rx->nparens) {
314 #ifdef PERL_OLD_COPY_ON_WRITE
315 i = 7 + rx->nparens * 2;
317 i = 6 + rx->nparens * 2;
326 *p++ = PTR2UV(RX_MATCH_COPIED(rx) ? rx->subbeg : NULL);
327 RX_MATCH_COPIED_off(rx);
329 #ifdef PERL_OLD_COPY_ON_WRITE
330 *p++ = PTR2UV(rx->saved_copy);
331 rx->saved_copy = NULL;
336 *p++ = PTR2UV(rx->subbeg);
337 *p++ = (UV)rx->sublen;
338 for (i = 0; i <= rx->nparens; ++i) {
339 *p++ = (UV)rx->startp[i];
340 *p++ = (UV)rx->endp[i];
345 Perl_rxres_restore(pTHX_ void **rsp, REGEXP *rx)
351 RX_MATCH_COPY_FREE(rx);
352 RX_MATCH_COPIED_set(rx, *p);
355 #ifdef PERL_OLD_COPY_ON_WRITE
357 SvREFCNT_dec (rx->saved_copy);
358 rx->saved_copy = INT2PTR(SV*,*p);
364 rx->subbeg = INT2PTR(char*,*p++);
365 rx->sublen = (I32)(*p++);
366 for (i = 0; i <= rx->nparens; ++i) {
367 rx->startp[i] = (I32)(*p++);
368 rx->endp[i] = (I32)(*p++);
373 Perl_rxres_free(pTHX_ void **rsp)
375 UV * const p = (UV*)*rsp;
380 void *tmp = INT2PTR(char*,*p);
383 PoisonFree(*p, 1, sizeof(*p));
385 Safefree(INT2PTR(char*,*p));
387 #ifdef PERL_OLD_COPY_ON_WRITE
389 SvREFCNT_dec (INT2PTR(SV*,p[1]));
399 dVAR; dSP; dMARK; dORIGMARK;
400 register SV * const tmpForm = *++MARK;
405 register SV *sv = NULL;
406 const char *item = NULL;
410 bool chopspace = (strchr(PL_chopset, ' ') != NULL);
411 const char *chophere = NULL;
412 char *linemark = NULL;
414 bool gotsome = FALSE;
416 const STRLEN fudge = SvPOK(tmpForm)
417 ? (SvCUR(tmpForm) * (IN_BYTES ? 1 : 3) + 1) : 0;
418 bool item_is_utf8 = FALSE;
419 bool targ_is_utf8 = FALSE;
421 OP * parseres = NULL;
425 if (!SvMAGICAL(tmpForm) || !SvCOMPILED(tmpForm)) {
426 if (SvREADONLY(tmpForm)) {
427 SvREADONLY_off(tmpForm);
428 parseres = doparseform(tmpForm);
429 SvREADONLY_on(tmpForm);
432 parseres = doparseform(tmpForm);
436 SvPV_force(PL_formtarget, len);
437 if (DO_UTF8(PL_formtarget))
439 t = SvGROW(PL_formtarget, len + fudge + 1); /* XXX SvCUR bad */
441 f = SvPV_const(tmpForm, len);
442 /* need to jump to the next word */
443 fpc = (U32*)(f + len + WORD_ALIGN - SvCUR(tmpForm) % WORD_ALIGN);
447 const char *name = "???";
450 case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break;
451 case FF_BLANK: arg = fpc[1]; name = "BLANK"; break;
452 case FF_SKIP: arg = fpc[1]; name = "SKIP"; break;
453 case FF_FETCH: arg = fpc[1]; name = "FETCH"; break;
454 case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break;
456 case FF_CHECKNL: name = "CHECKNL"; break;
457 case FF_CHECKCHOP: name = "CHECKCHOP"; break;
458 case FF_SPACE: name = "SPACE"; break;
459 case FF_HALFSPACE: name = "HALFSPACE"; break;
460 case FF_ITEM: name = "ITEM"; break;
461 case FF_CHOP: name = "CHOP"; break;
462 case FF_LINEGLOB: name = "LINEGLOB"; break;
463 case FF_NEWLINE: name = "NEWLINE"; break;
464 case FF_MORE: name = "MORE"; break;
465 case FF_LINEMARK: name = "LINEMARK"; break;
466 case FF_END: name = "END"; break;
467 case FF_0DECIMAL: name = "0DECIMAL"; break;
468 case FF_LINESNGL: name = "LINESNGL"; break;
471 PerlIO_printf(Perl_debug_log, "%-16s%ld\n", name, (long) arg);
473 PerlIO_printf(Perl_debug_log, "%-16s\n", name);
484 if (targ_is_utf8 && !SvUTF8(tmpForm)) {
485 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
487 sv_catpvn_utf8_upgrade(PL_formtarget, f, arg, nsv);
488 t = SvEND(PL_formtarget);
491 if (!targ_is_utf8 && DO_UTF8(tmpForm)) {
492 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
494 sv_utf8_upgrade(PL_formtarget);
495 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
496 t = SvEND(PL_formtarget);
516 if (ckWARN(WARN_SYNTAX))
517 Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Not enough format arguments");
524 const char *s = item = SvPV_const(sv, len);
527 itemsize = sv_len_utf8(sv);
528 if (itemsize != (I32)len) {
530 if (itemsize > fieldsize) {
531 itemsize = fieldsize;
532 itembytes = itemsize;
533 sv_pos_u2b(sv, &itembytes, 0);
537 send = chophere = s + itembytes;
547 sv_pos_b2u(sv, &itemsize);
551 item_is_utf8 = FALSE;
552 if (itemsize > fieldsize)
553 itemsize = fieldsize;
554 send = chophere = s + itemsize;
568 const char *s = item = SvPV_const(sv, len);
571 itemsize = sv_len_utf8(sv);
572 if (itemsize != (I32)len) {
574 if (itemsize <= fieldsize) {
575 const char *send = chophere = s + itemsize;
588 itemsize = fieldsize;
589 itembytes = itemsize;
590 sv_pos_u2b(sv, &itembytes, 0);
591 send = chophere = s + itembytes;
592 while (s < send || (s == send && isSPACE(*s))) {
602 if (strchr(PL_chopset, *s))
607 itemsize = chophere - item;
608 sv_pos_b2u(sv, &itemsize);
614 item_is_utf8 = FALSE;
615 if (itemsize <= fieldsize) {
616 const char *const send = chophere = s + itemsize;
629 itemsize = fieldsize;
630 send = chophere = s + itemsize;
631 while (s < send || (s == send && isSPACE(*s))) {
641 if (strchr(PL_chopset, *s))
646 itemsize = chophere - item;
652 arg = fieldsize - itemsize;
661 arg = fieldsize - itemsize;
672 const char *s = item;
676 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
678 sv_utf8_upgrade(PL_formtarget);
679 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
680 t = SvEND(PL_formtarget);
684 if (UTF8_IS_CONTINUED(*s)) {
685 STRLEN skip = UTF8SKIP(s);
702 if ( !((*t++ = *s++) & ~31) )
708 if (targ_is_utf8 && !item_is_utf8) {
709 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
711 sv_catpvn_utf8_upgrade(PL_formtarget, s, arg, nsv);
712 for (; t < SvEND(PL_formtarget); t++) {
725 const int ch = *t++ = *s++;
728 if ( !((*t++ = *s++) & ~31) )
737 const char *s = chophere;
755 const char *s = item = SvPV_const(sv, len);
757 if ((item_is_utf8 = DO_UTF8(sv)))
758 itemsize = sv_len_utf8(sv);
760 bool chopped = FALSE;
761 const char *const send = s + len;
763 chophere = s + itemsize;
779 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
781 SvUTF8_on(PL_formtarget);
783 SvCUR_set(sv, chophere - item);
784 sv_catsv(PL_formtarget, sv);
785 SvCUR_set(sv, itemsize);
787 sv_catsv(PL_formtarget, sv);
789 SvCUR_set(PL_formtarget, SvCUR(PL_formtarget) - 1);
790 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
791 t = SvPVX(PL_formtarget) + SvCUR(PL_formtarget);
800 #if defined(USE_LONG_DOUBLE)
801 fmt = (arg & 256) ? "%#0*.*" PERL_PRIfldbl : "%0*.*" PERL_PRIfldbl;
803 fmt = (arg & 256) ? "%#0*.*f" : "%0*.*f";
808 #if defined(USE_LONG_DOUBLE)
809 fmt = (arg & 256) ? "%#*.*" PERL_PRIfldbl : "%*.*" PERL_PRIfldbl;
811 fmt = (arg & 256) ? "%#*.*f" : "%*.*f";
814 /* If the field is marked with ^ and the value is undefined,
816 if ((arg & 512) && !SvOK(sv)) {
824 /* overflow evidence */
825 if (num_overflow(value, fieldsize, arg)) {
831 /* Formats aren't yet marked for locales, so assume "yes". */
833 STORE_NUMERIC_STANDARD_SET_LOCAL();
834 sprintf(t, fmt, (int) fieldsize, (int) arg & 255, value);
835 RESTORE_NUMERIC_STANDARD();
842 while (t-- > linemark && *t == ' ') ;
850 if (arg) { /* repeat until fields exhausted? */
852 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
853 lines += FmLINES(PL_formtarget);
856 if (strnEQ(linemark, linemark - arg, arg))
857 DIE(aTHX_ "Runaway format");
860 SvUTF8_on(PL_formtarget);
861 FmLINES(PL_formtarget) = lines;
863 RETURNOP(cLISTOP->op_first);
874 const char *s = chophere;
875 const char *send = item + len;
877 while (isSPACE(*s) && (s < send))
882 arg = fieldsize - itemsize;
889 if (strnEQ(s1," ",3)) {
890 while (s1 > SvPVX_const(PL_formtarget) && isSPACE(s1[-1]))
901 SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget));
903 SvUTF8_on(PL_formtarget);
904 FmLINES(PL_formtarget) += lines;
916 if (PL_stack_base + *PL_markstack_ptr == SP) {
918 if (GIMME_V == G_SCALAR)
919 XPUSHs(sv_2mortal(newSViv(0)));
920 RETURNOP(PL_op->op_next->op_next);
922 PL_stack_sp = PL_stack_base + *PL_markstack_ptr + 1;
923 pp_pushmark(); /* push dst */
924 pp_pushmark(); /* push src */
925 ENTER; /* enter outer scope */
928 if (PL_op->op_private & OPpGREP_LEX)
929 SAVESPTR(PAD_SVl(PL_op->op_targ));
932 ENTER; /* enter inner scope */
935 src = PL_stack_base[*PL_markstack_ptr];
937 if (PL_op->op_private & OPpGREP_LEX)
938 PAD_SVl(PL_op->op_targ) = src;
943 if (PL_op->op_type == OP_MAPSTART)
944 pp_pushmark(); /* push top */
945 return ((LOGOP*)PL_op->op_next)->op_other;
951 const I32 gimme = GIMME_V;
952 I32 items = (SP - PL_stack_base) - *PL_markstack_ptr; /* how many new items */
958 /* first, move source pointer to the next item in the source list */
959 ++PL_markstack_ptr[-1];
961 /* if there are new items, push them into the destination list */
962 if (items && gimme != G_VOID) {
963 /* might need to make room back there first */
964 if (items > PL_markstack_ptr[-1] - PL_markstack_ptr[-2]) {
965 /* XXX this implementation is very pessimal because the stack
966 * is repeatedly extended for every set of items. Is possible
967 * to do this without any stack extension or copying at all
968 * by maintaining a separate list over which the map iterates
969 * (like foreach does). --gsar */
971 /* everything in the stack after the destination list moves
972 * towards the end the stack by the amount of room needed */
973 shift = items - (PL_markstack_ptr[-1] - PL_markstack_ptr[-2]);
975 /* items to shift up (accounting for the moved source pointer) */
976 count = (SP - PL_stack_base) - (PL_markstack_ptr[-1] - 1);
978 /* This optimization is by Ben Tilly and it does
979 * things differently from what Sarathy (gsar)
980 * is describing. The downside of this optimization is
981 * that leaves "holes" (uninitialized and hopefully unused areas)
982 * to the Perl stack, but on the other hand this
983 * shouldn't be a problem. If Sarathy's idea gets
984 * implemented, this optimization should become
985 * irrelevant. --jhi */
987 shift = count; /* Avoid shifting too often --Ben Tilly */
992 PL_markstack_ptr[-1] += shift;
993 *PL_markstack_ptr += shift;
997 /* copy the new items down to the destination list */
998 dst = PL_stack_base + (PL_markstack_ptr[-2] += items) - 1;
999 if (gimme == G_ARRAY) {
1001 *dst-- = SvTEMP(TOPs) ? POPs : sv_mortalcopy(POPs);
1004 /* scalar context: we don't care about which values map returns
1005 * (we use undef here). And so we certainly don't want to do mortal
1006 * copies of meaningless values. */
1007 while (items-- > 0) {
1009 *dst-- = &PL_sv_undef;
1013 LEAVE; /* exit inner scope */
1016 if (PL_markstack_ptr[-1] > *PL_markstack_ptr) {
1018 (void)POPMARK; /* pop top */
1019 LEAVE; /* exit outer scope */
1020 (void)POPMARK; /* pop src */
1021 items = --*PL_markstack_ptr - PL_markstack_ptr[-1];
1022 (void)POPMARK; /* pop dst */
1023 SP = PL_stack_base + POPMARK; /* pop original mark */
1024 if (gimme == G_SCALAR) {
1025 if (PL_op->op_private & OPpGREP_LEX) {
1026 SV* sv = sv_newmortal();
1027 sv_setiv(sv, items);
1035 else if (gimme == G_ARRAY)
1042 ENTER; /* enter inner scope */
1045 /* set $_ to the new source item */
1046 src = PL_stack_base[PL_markstack_ptr[-1]];
1048 if (PL_op->op_private & OPpGREP_LEX)
1049 PAD_SVl(PL_op->op_targ) = src;
1053 RETURNOP(cLOGOP->op_other);
1062 if (GIMME == G_ARRAY)
1064 if (SvTRUEx(PAD_SV(PL_op->op_targ)))
1065 return cLOGOP->op_other;
1075 if (GIMME == G_ARRAY) {
1076 RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
1080 SV * const targ = PAD_SV(PL_op->op_targ);
1083 if (PL_op->op_private & OPpFLIP_LINENUM) {
1084 if (GvIO(PL_last_in_gv)) {
1085 flip = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
1088 GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV);
1090 flip = SvIV(sv) == SvIV(GvSV(gv));
1096 sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1);
1097 if (PL_op->op_flags & OPf_SPECIAL) {
1105 RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
1108 sv_setpvn(TARG, "", 0);
1114 /* This code tries to decide if "$left .. $right" should use the
1115 magical string increment, or if the range is numeric (we make
1116 an exception for .."0" [#18165]). AMS 20021031. */
1118 #define RANGE_IS_NUMERIC(left,right) ( \
1119 SvNIOKp(left) || (SvOK(left) && !SvPOKp(left)) || \
1120 SvNIOKp(right) || (SvOK(right) && !SvPOKp(right)) || \
1121 (((!SvOK(left) && SvOK(right)) || ((!SvOK(left) || \
1122 looks_like_number(left)) && SvPOKp(left) && *SvPVX_const(left) != '0')) \
1123 && (!SvOK(right) || looks_like_number(right))))
1129 if (GIMME == G_ARRAY) {
1135 if (RANGE_IS_NUMERIC(left,right)) {
1138 if ((SvOK(left) && SvNV(left) < IV_MIN) ||
1139 (SvOK(right) && SvNV(right) > IV_MAX))
1140 DIE(aTHX_ "Range iterator outside integer range");
1151 SV * const sv = sv_2mortal(newSViv(i++));
1156 SV * const final = sv_mortalcopy(right);
1158 const char * const tmps = SvPV_const(final, len);
1160 SV *sv = sv_mortalcopy(left);
1161 SvPV_force_nolen(sv);
1162 while (!SvNIOKp(sv) && SvCUR(sv) <= len) {
1164 if (strEQ(SvPVX_const(sv),tmps))
1166 sv = sv_2mortal(newSVsv(sv));
1173 SV * const targ = PAD_SV(cUNOP->op_first->op_targ);
1177 if (PL_op->op_private & OPpFLIP_LINENUM) {
1178 if (GvIO(PL_last_in_gv)) {
1179 flop = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
1182 GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV);
1183 if (gv && GvSV(gv)) flop = SvIV(sv) == SvIV(GvSV(gv));
1191 sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0);
1192 sv_catpvs(targ, "E0");
1202 static const char * const context_name[] = {
1215 S_dopoptolabel(pTHX_ const char *label)
1220 for (i = cxstack_ix; i >= 0; i--) {
1221 register const PERL_CONTEXT * const cx = &cxstack[i];
1222 switch (CxTYPE(cx)) {
1230 if (ckWARN(WARN_EXITING))
1231 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s",
1232 context_name[CxTYPE(cx)], OP_NAME(PL_op));
1233 if (CxTYPE(cx) == CXt_NULL)
1237 if ( !cx->blk_loop.label || strNE(label, cx->blk_loop.label) ) {
1238 DEBUG_l(Perl_deb(aTHX_ "(Skipping label #%ld %s)\n",
1239 (long)i, cx->blk_loop.label));
1242 DEBUG_l( Perl_deb(aTHX_ "(Found label #%ld %s)\n", (long)i, label));
1252 Perl_dowantarray(pTHX)
1255 const I32 gimme = block_gimme();
1256 return (gimme == G_VOID) ? G_SCALAR : gimme;
1260 Perl_block_gimme(pTHX)
1263 const I32 cxix = dopoptosub(cxstack_ix);
1267 switch (cxstack[cxix].blk_gimme) {
1275 Perl_croak(aTHX_ "panic: bad gimme: %d\n", cxstack[cxix].blk_gimme);
1282 Perl_is_lvalue_sub(pTHX)
1285 const I32 cxix = dopoptosub(cxstack_ix);
1286 assert(cxix >= 0); /* We should only be called from inside subs */
1288 if (cxstack[cxix].blk_sub.lval && CvLVALUE(cxstack[cxix].blk_sub.cv))
1289 return cxstack[cxix].blk_sub.lval;
1295 S_dopoptosub(pTHX_ I32 startingblock)
1298 return dopoptosub_at(cxstack, startingblock);
1302 S_dopoptosub_at(pTHX_ const PERL_CONTEXT *cxstk, I32 startingblock)
1306 for (i = startingblock; i >= 0; i--) {
1307 register const PERL_CONTEXT * const cx = &cxstk[i];
1308 switch (CxTYPE(cx)) {
1314 DEBUG_l( Perl_deb(aTHX_ "(Found sub #%ld)\n", (long)i));
1322 S_dopoptoeval(pTHX_ I32 startingblock)
1326 for (i = startingblock; i >= 0; i--) {
1327 register const PERL_CONTEXT *cx = &cxstack[i];
1328 switch (CxTYPE(cx)) {
1332 DEBUG_l( Perl_deb(aTHX_ "(Found eval #%ld)\n", (long)i));
1340 S_dopoptoloop(pTHX_ I32 startingblock)
1344 for (i = startingblock; i >= 0; i--) {
1345 register const PERL_CONTEXT * const cx = &cxstack[i];
1346 switch (CxTYPE(cx)) {
1352 if (ckWARN(WARN_EXITING))
1353 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s",
1354 context_name[CxTYPE(cx)], OP_NAME(PL_op));
1355 if ((CxTYPE(cx)) == CXt_NULL)
1359 DEBUG_l( Perl_deb(aTHX_ "(Found loop #%ld)\n", (long)i));
1367 S_dopoptogiven(pTHX_ I32 startingblock)
1371 for (i = startingblock; i >= 0; i--) {
1372 register const PERL_CONTEXT *cx = &cxstack[i];
1373 switch (CxTYPE(cx)) {
1377 DEBUG_l( Perl_deb(aTHX_ "(Found given #%ld)\n", (long)i));
1380 if (CxFOREACHDEF(cx)) {
1381 DEBUG_l( Perl_deb(aTHX_ "(Found foreach #%ld)\n", (long)i));
1390 S_dopoptowhen(pTHX_ I32 startingblock)
1394 for (i = startingblock; i >= 0; i--) {
1395 register const PERL_CONTEXT *cx = &cxstack[i];
1396 switch (CxTYPE(cx)) {
1400 DEBUG_l( Perl_deb(aTHX_ "(Found when #%ld)\n", (long)i));
1408 Perl_dounwind(pTHX_ I32 cxix)
1413 while (cxstack_ix > cxix) {
1415 register PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1416 DEBUG_l(PerlIO_printf(Perl_debug_log, "Unwinding block %ld, type %s\n",
1417 (long) cxstack_ix, PL_block_type[CxTYPE(cx)]));
1418 /* Note: we don't need to restore the base context info till the end. */
1419 switch (CxTYPE(cx)) {
1422 continue; /* not break */
1441 PERL_UNUSED_VAR(optype);
1445 Perl_qerror(pTHX_ SV *err)
1449 sv_catsv(ERRSV, err);
1451 sv_catsv(PL_errors, err);
1453 Perl_warn(aTHX_ "%"SVf, err);
1458 Perl_die_where(pTHX_ const char *message, STRLEN msglen)
1467 if (PL_in_eval & EVAL_KEEPERR) {
1468 static const char prefix[] = "\t(in cleanup) ";
1469 SV * const err = ERRSV;
1470 const char *e = NULL;
1472 sv_setpvn(err,"",0);
1473 else if (SvCUR(err) >= sizeof(prefix)+msglen-1) {
1475 e = SvPV_const(err, len);
1477 if (*e != *message || strNE(e,message))
1481 SvGROW(err, SvCUR(err)+sizeof(prefix)+msglen);
1482 sv_catpvn(err, prefix, sizeof(prefix)-1);
1483 sv_catpvn(err, message, msglen);
1484 if (ckWARN(WARN_MISC)) {
1485 const STRLEN start = SvCUR(err)-msglen-sizeof(prefix)+1;
1486 Perl_warner(aTHX_ packWARN(WARN_MISC), SvPVX_const(err)+start);
1491 sv_setpvn(ERRSV, message, msglen);
1495 while ((cxix = dopoptoeval(cxstack_ix)) < 0
1496 && PL_curstackinfo->si_prev)
1504 register PERL_CONTEXT *cx;
1507 if (cxix < cxstack_ix)
1510 POPBLOCK(cx,PL_curpm);
1511 if (CxTYPE(cx) != CXt_EVAL) {
1513 message = SvPVx_const(ERRSV, msglen);
1514 PerlIO_write(Perl_error_log, "panic: die ", 11);
1515 PerlIO_write(Perl_error_log, message, msglen);
1520 if (gimme == G_SCALAR)
1521 *++newsp = &PL_sv_undef;
1522 PL_stack_sp = newsp;
1526 /* LEAVE could clobber PL_curcop (see save_re_context())
1527 * XXX it might be better to find a way to avoid messing with
1528 * PL_curcop in save_re_context() instead, but this is a more
1529 * minimal fix --GSAR */
1530 PL_curcop = cx->blk_oldcop;
1532 if (optype == OP_REQUIRE) {
1533 const char* const msg = SvPVx_nolen_const(ERRSV);
1534 SV * const nsv = cx->blk_eval.old_namesv;
1535 (void)hv_store(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv),
1537 DIE(aTHX_ "%sCompilation failed in require",
1538 *msg ? msg : "Unknown error\n");
1540 assert(CxTYPE(cx) == CXt_EVAL);
1541 return cx->blk_eval.retop;
1545 message = SvPVx_const(ERRSV, msglen);
1547 write_to_stderr(message, msglen);
1555 dVAR; dSP; dPOPTOPssrl;
1556 if (SvTRUE(left) != SvTRUE(right))
1566 register I32 cxix = dopoptosub(cxstack_ix);
1567 register const PERL_CONTEXT *cx;
1568 register const PERL_CONTEXT *ccstack = cxstack;
1569 const PERL_SI *top_si = PL_curstackinfo;
1571 const char *stashname;
1578 /* we may be in a higher stacklevel, so dig down deeper */
1579 while (cxix < 0 && top_si->si_type != PERLSI_MAIN) {
1580 top_si = top_si->si_prev;
1581 ccstack = top_si->si_cxstack;
1582 cxix = dopoptosub_at(ccstack, top_si->si_cxix);
1585 if (GIMME != G_ARRAY) {
1591 /* caller() should not report the automatic calls to &DB::sub */
1592 if (PL_DBsub && GvCV(PL_DBsub) && cxix >= 0 &&
1593 ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub))
1597 cxix = dopoptosub_at(ccstack, cxix - 1);
1600 cx = &ccstack[cxix];
1601 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
1602 const I32 dbcxix = dopoptosub_at(ccstack, cxix - 1);
1603 /* We expect that ccstack[dbcxix] is CXt_SUB, anyway, the
1604 field below is defined for any cx. */
1605 /* caller() should not report the automatic calls to &DB::sub */
1606 if (PL_DBsub && GvCV(PL_DBsub) && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub))
1607 cx = &ccstack[dbcxix];
1610 stashname = CopSTASHPV(cx->blk_oldcop);
1611 if (GIMME != G_ARRAY) {
1614 PUSHs(&PL_sv_undef);
1617 sv_setpv(TARG, stashname);
1626 PUSHs(&PL_sv_undef);
1628 PUSHs(sv_2mortal(newSVpv(stashname, 0)));
1629 PUSHs(sv_2mortal(newSVpv(OutCopFILE(cx->blk_oldcop), 0)));
1630 PUSHs(sv_2mortal(newSViv((I32)CopLINE(cx->blk_oldcop))));
1633 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
1634 GV * const cvgv = CvGV(ccstack[cxix].blk_sub.cv);
1635 /* So is ccstack[dbcxix]. */
1637 SV * const sv = newSV(0);
1638 gv_efullname3(sv, cvgv, NULL);
1639 PUSHs(sv_2mortal(sv));
1640 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1643 PUSHs(sv_2mortal(newSVpvs("(unknown)")));
1644 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1648 PUSHs(sv_2mortal(newSVpvs("(eval)")));
1649 PUSHs(sv_2mortal(newSViv(0)));
1651 gimme = (I32)cx->blk_gimme;
1652 if (gimme == G_VOID)
1653 PUSHs(&PL_sv_undef);
1655 PUSHs(sv_2mortal(newSViv(gimme & G_ARRAY)));
1656 if (CxTYPE(cx) == CXt_EVAL) {
1658 if (cx->blk_eval.old_op_type == OP_ENTEREVAL) {
1659 PUSHs(cx->blk_eval.cur_text);
1663 else if (cx->blk_eval.old_namesv) {
1664 PUSHs(sv_2mortal(newSVsv(cx->blk_eval.old_namesv)));
1667 /* eval BLOCK (try blocks have old_namesv == 0) */
1669 PUSHs(&PL_sv_undef);
1670 PUSHs(&PL_sv_undef);
1674 PUSHs(&PL_sv_undef);
1675 PUSHs(&PL_sv_undef);
1677 if (CxTYPE(cx) == CXt_SUB && cx->blk_sub.hasargs
1678 && CopSTASH_eq(PL_curcop, PL_debstash))
1680 AV * const ary = cx->blk_sub.argarray;
1681 const int off = AvARRAY(ary) - AvALLOC(ary);
1684 GV* const tmpgv = gv_fetchpvs("DB::args", GV_ADD, SVt_PVAV);
1685 PL_dbargs = GvAV(gv_AVadd(tmpgv));
1687 AvREAL_off(PL_dbargs); /* XXX should be REIFY (see av.h) */
1690 if (AvMAX(PL_dbargs) < AvFILLp(ary) + off)
1691 av_extend(PL_dbargs, AvFILLp(ary) + off);
1692 Copy(AvALLOC(ary), AvARRAY(PL_dbargs), AvFILLp(ary) + 1 + off, SV*);
1693 AvFILLp(PL_dbargs) = AvFILLp(ary) + off;
1695 /* XXX only hints propagated via op_private are currently
1696 * visible (others are not easily accessible, since they
1697 * use the global PL_hints) */
1698 PUSHs(sv_2mortal(newSViv(CopHINTS_get(cx->blk_oldcop))));
1701 STRLEN * const old_warnings = cx->blk_oldcop->cop_warnings ;
1703 if (old_warnings == pWARN_NONE ||
1704 (old_warnings == pWARN_STD && (PL_dowarn & G_WARN_ON) == 0))
1705 mask = newSVpvn(WARN_NONEstring, WARNsize) ;
1706 else if (old_warnings == pWARN_ALL ||
1707 (old_warnings == pWARN_STD && PL_dowarn & G_WARN_ON)) {
1708 /* Get the bit mask for $warnings::Bits{all}, because
1709 * it could have been extended by warnings::register */
1711 HV * const bits = get_hv("warnings::Bits", FALSE);
1712 if (bits && (bits_all=hv_fetchs(bits, "all", FALSE))) {
1713 mask = newSVsv(*bits_all);
1716 mask = newSVpvn(WARN_ALLstring, WARNsize) ;
1720 mask = newSVpvn((char *) (old_warnings + 1), old_warnings[0]);
1721 PUSHs(sv_2mortal(mask));
1724 PUSHs(cx->blk_oldcop->cop_hints ?
1725 sv_2mortal(newRV_noinc(
1726 (SV*)Perl_refcounted_he_chain_2hv(aTHX_
1727 cx->blk_oldcop->cop_hints)))
1736 const char * const tmps = (MAXARG < 1) ? "" : POPpconstx;
1737 sv_reset(tmps, CopSTASH(PL_curcop));
1742 /* like pp_nextstate, but used instead when the debugger is active */
1747 PL_curcop = (COP*)PL_op;
1748 TAINT_NOT; /* Each statement is presumed innocent */
1749 PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;
1752 if (PL_op->op_flags & OPf_SPECIAL /* breakpoint */
1753 || SvIV(PL_DBsingle) || SvIV(PL_DBsignal) || SvIV(PL_DBtrace))
1756 register PERL_CONTEXT *cx;
1757 const I32 gimme = G_ARRAY;
1759 GV * const gv = PL_DBgv;
1760 register CV * const cv = GvCV(gv);
1763 DIE(aTHX_ "No DB::DB routine defined");
1765 if (CvDEPTH(cv) >= 1 && !(PL_debug & DEBUG_DB_RECURSE_FLAG))
1766 /* don't do recursive DB::DB call */
1781 (void)(*CvXSUB(cv))(aTHX_ cv);
1788 PUSHBLOCK(cx, CXt_SUB, SP);
1790 cx->blk_sub.retop = PL_op->op_next;
1793 PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
1794 RETURNOP(CvSTART(cv));
1804 register PERL_CONTEXT *cx;
1805 const I32 gimme = GIMME_V;
1807 U32 cxtype = CXt_LOOP | CXp_FOREACH;
1815 if (PL_op->op_targ) {
1816 if (PL_op->op_private & OPpLVAL_INTRO) { /* for my $x (...) */
1817 SvPADSTALE_off(PAD_SVl(PL_op->op_targ));
1818 SAVESETSVFLAGS(PAD_SVl(PL_op->op_targ),
1819 SVs_PADSTALE, SVs_PADSTALE);
1821 #ifndef USE_ITHREADS
1822 svp = &PAD_SVl(PL_op->op_targ); /* "my" variable */
1825 SAVEPADSV(PL_op->op_targ);
1826 iterdata = INT2PTR(void*, PL_op->op_targ);
1827 cxtype |= CXp_PADVAR;
1831 GV * const gv = (GV*)POPs;
1832 svp = &GvSV(gv); /* symbol table variable */
1833 SAVEGENERICSV(*svp);
1836 iterdata = (void*)gv;
1840 if (PL_op->op_private & OPpITER_DEF)
1841 cxtype |= CXp_FOR_DEF;
1845 PUSHBLOCK(cx, cxtype, SP);
1847 PUSHLOOP(cx, iterdata, MARK);
1849 PUSHLOOP(cx, svp, MARK);
1851 if (PL_op->op_flags & OPf_STACKED) {
1852 cx->blk_loop.iterary = (AV*)SvREFCNT_inc(POPs);
1853 if (SvTYPE(cx->blk_loop.iterary) != SVt_PVAV) {
1855 SV * const right = (SV*)cx->blk_loop.iterary;
1858 if (RANGE_IS_NUMERIC(sv,right)) {
1859 if ((SvOK(sv) && SvNV(sv) < IV_MIN) ||
1860 (SvOK(right) && SvNV(right) >= IV_MAX))
1861 DIE(aTHX_ "Range iterator outside integer range");
1862 cx->blk_loop.iterix = SvIV(sv);
1863 cx->blk_loop.itermax = SvIV(right);
1865 /* for correct -Dstv display */
1866 cx->blk_oldsp = sp - PL_stack_base;
1870 cx->blk_loop.iterlval = newSVsv(sv);
1871 (void) SvPV_force_nolen(cx->blk_loop.iterlval);
1872 (void) SvPV_nolen_const(right);
1875 else if (PL_op->op_private & OPpITER_REVERSED) {
1876 cx->blk_loop.itermax = 0;
1877 cx->blk_loop.iterix = AvFILL(cx->blk_loop.iterary) + 1;
1882 cx->blk_loop.iterary = PL_curstack;
1883 AvFILLp(PL_curstack) = SP - PL_stack_base;
1884 if (PL_op->op_private & OPpITER_REVERSED) {
1885 cx->blk_loop.itermax = MARK - PL_stack_base + 1;
1886 cx->blk_loop.iterix = cx->blk_oldsp + 1;
1889 cx->blk_loop.iterix = MARK - PL_stack_base;
1899 register PERL_CONTEXT *cx;
1900 const I32 gimme = GIMME_V;
1906 PUSHBLOCK(cx, CXt_LOOP, SP);
1907 PUSHLOOP(cx, 0, SP);
1915 register PERL_CONTEXT *cx;
1922 assert(CxTYPE(cx) == CXt_LOOP);
1924 newsp = PL_stack_base + cx->blk_loop.resetsp;
1927 if (gimme == G_VOID)
1928 /*EMPTY*/; /* do nothing */
1929 else if (gimme == G_SCALAR) {
1931 *++newsp = sv_mortalcopy(*SP);
1933 *++newsp = &PL_sv_undef;
1937 *++newsp = sv_mortalcopy(*++mark);
1938 TAINT_NOT; /* Each item is independent */
1944 POPLOOP(cx); /* Stack values are safe: release loop vars ... */
1945 PL_curpm = newpm; /* ... and pop $1 et al */
1956 register PERL_CONTEXT *cx;
1957 bool popsub2 = FALSE;
1958 bool clear_errsv = FALSE;
1966 const I32 cxix = dopoptosub(cxstack_ix);
1969 if (CxMULTICALL(cxstack)) { /* In this case we must be in a
1970 * sort block, which is a CXt_NULL
1973 PL_stack_base[1] = *PL_stack_sp;
1974 PL_stack_sp = PL_stack_base + 1;
1978 DIE(aTHX_ "Can't return outside a subroutine");
1980 if (cxix < cxstack_ix)
1983 if (CxMULTICALL(&cxstack[cxix])) {
1984 gimme = cxstack[cxix].blk_gimme;
1985 if (gimme == G_VOID)
1986 PL_stack_sp = PL_stack_base;
1987 else if (gimme == G_SCALAR) {
1988 PL_stack_base[1] = *PL_stack_sp;
1989 PL_stack_sp = PL_stack_base + 1;
1995 switch (CxTYPE(cx)) {
1998 retop = cx->blk_sub.retop;
1999 cxstack_ix++; /* preserve cx entry on stack for use by POPSUB */
2002 if (!(PL_in_eval & EVAL_KEEPERR))
2005 retop = cx->blk_eval.retop;
2009 if (optype == OP_REQUIRE &&
2010 (MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) )
2012 /* Unassume the success we assumed earlier. */
2013 SV * const nsv = cx->blk_eval.old_namesv;
2014 (void)hv_delete(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv), G_DISCARD);
2015 DIE(aTHX_ "%"SVf" did not return a true value", nsv);
2020 retop = cx->blk_sub.retop;
2023 DIE(aTHX_ "panic: return");
2027 if (gimme == G_SCALAR) {
2030 if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) {
2032 *++newsp = SvREFCNT_inc(*SP);
2037 sv = SvREFCNT_inc(*SP); /* FREETMPS could clobber it */
2039 *++newsp = sv_mortalcopy(sv);
2044 *++newsp = (SvTEMP(*SP)) ? *SP : sv_mortalcopy(*SP);
2047 *++newsp = sv_mortalcopy(*SP);
2050 *++newsp = &PL_sv_undef;
2052 else if (gimme == G_ARRAY) {
2053 while (++MARK <= SP) {
2054 *++newsp = (popsub2 && SvTEMP(*MARK))
2055 ? *MARK : sv_mortalcopy(*MARK);
2056 TAINT_NOT; /* Each item is independent */
2059 PL_stack_sp = newsp;
2062 /* Stack values are safe: */
2065 POPSUB(cx,sv); /* release CV and @_ ... */
2069 PL_curpm = newpm; /* ... and pop $1 et al */
2073 sv_setpvn(ERRSV,"",0);
2081 register PERL_CONTEXT *cx;
2092 if (PL_op->op_flags & OPf_SPECIAL) {
2093 cxix = dopoptoloop(cxstack_ix);
2095 DIE(aTHX_ "Can't \"last\" outside a loop block");
2098 cxix = dopoptolabel(cPVOP->op_pv);
2100 DIE(aTHX_ "Label not found for \"last %s\"", cPVOP->op_pv);
2102 if (cxix < cxstack_ix)
2106 cxstack_ix++; /* temporarily protect top context */
2108 switch (CxTYPE(cx)) {
2111 newsp = PL_stack_base + cx->blk_loop.resetsp;
2112 nextop = cx->blk_loop.last_op->op_next;
2116 nextop = cx->blk_sub.retop;
2120 nextop = cx->blk_eval.retop;
2124 nextop = cx->blk_sub.retop;
2127 DIE(aTHX_ "panic: last");
2131 if (gimme == G_SCALAR) {
2133 *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*SP))
2134 ? *SP : sv_mortalcopy(*SP);
2136 *++newsp = &PL_sv_undef;
2138 else if (gimme == G_ARRAY) {
2139 while (++MARK <= SP) {
2140 *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*MARK))
2141 ? *MARK : sv_mortalcopy(*MARK);
2142 TAINT_NOT; /* Each item is independent */
2150 /* Stack values are safe: */
2153 POPLOOP(cx); /* release loop vars ... */
2157 POPSUB(cx,sv); /* release CV and @_ ... */
2160 PL_curpm = newpm; /* ... and pop $1 et al */
2163 PERL_UNUSED_VAR(optype);
2164 PERL_UNUSED_VAR(gimme);
2172 register PERL_CONTEXT *cx;
2175 if (PL_op->op_flags & OPf_SPECIAL) {
2176 cxix = dopoptoloop(cxstack_ix);
2178 DIE(aTHX_ "Can't \"next\" outside a loop block");
2181 cxix = dopoptolabel(cPVOP->op_pv);
2183 DIE(aTHX_ "Label not found for \"next %s\"", cPVOP->op_pv);
2185 if (cxix < cxstack_ix)
2188 /* clear off anything above the scope we're re-entering, but
2189 * save the rest until after a possible continue block */
2190 inner = PL_scopestack_ix;
2192 if (PL_scopestack_ix < inner)
2193 leave_scope(PL_scopestack[PL_scopestack_ix]);
2194 PL_curcop = cx->blk_oldcop;
2195 return cx->blk_loop.next_op;
2202 register PERL_CONTEXT *cx;
2206 if (PL_op->op_flags & OPf_SPECIAL) {
2207 cxix = dopoptoloop(cxstack_ix);
2209 DIE(aTHX_ "Can't \"redo\" outside a loop block");
2212 cxix = dopoptolabel(cPVOP->op_pv);
2214 DIE(aTHX_ "Label not found for \"redo %s\"", cPVOP->op_pv);
2216 if (cxix < cxstack_ix)
2219 redo_op = cxstack[cxix].blk_loop.redo_op;
2220 if (redo_op->op_type == OP_ENTER) {
2221 /* pop one less context to avoid $x being freed in while (my $x..) */
2223 assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_BLOCK);
2224 redo_op = redo_op->op_next;
2228 oldsave = PL_scopestack[PL_scopestack_ix - 1];
2229 LEAVE_SCOPE(oldsave);
2231 PL_curcop = cx->blk_oldcop;
2236 S_dofindlabel(pTHX_ OP *o, const char *label, OP **opstack, OP **oplimit)
2240 static const char too_deep[] = "Target of goto is too deeply nested";
2243 Perl_croak(aTHX_ too_deep);
2244 if (o->op_type == OP_LEAVE ||
2245 o->op_type == OP_SCOPE ||
2246 o->op_type == OP_LEAVELOOP ||
2247 o->op_type == OP_LEAVESUB ||
2248 o->op_type == OP_LEAVETRY)
2250 *ops++ = cUNOPo->op_first;
2252 Perl_croak(aTHX_ too_deep);
2255 if (o->op_flags & OPf_KIDS) {
2257 /* First try all the kids at this level, since that's likeliest. */
2258 for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
2259 if ((kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) &&
2260 kCOP->cop_label && strEQ(kCOP->cop_label, label))
2263 for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
2264 if (kid == PL_lastgotoprobe)
2266 if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) {
2269 else if (ops[-1]->op_type == OP_NEXTSTATE ||
2270 ops[-1]->op_type == OP_DBSTATE)
2275 if ((o = dofindlabel(kid, label, ops, oplimit)))
2288 register PERL_CONTEXT *cx;
2289 #define GOTO_DEPTH 64
2290 OP *enterops[GOTO_DEPTH];
2291 const char *label = NULL;
2292 const bool do_dump = (PL_op->op_type == OP_DUMP);
2293 static const char must_have_label[] = "goto must have label";
2295 if (PL_op->op_flags & OPf_STACKED) {
2296 SV * const sv = POPs;
2298 /* This egregious kludge implements goto &subroutine */
2299 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) {
2301 register PERL_CONTEXT *cx;
2302 CV* cv = (CV*)SvRV(sv);
2309 if (!CvROOT(cv) && !CvXSUB(cv)) {
2310 const GV * const gv = CvGV(cv);
2314 /* autoloaded stub? */
2315 if (cv != GvCV(gv) && (cv = GvCV(gv)))
2317 autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv),
2318 GvNAMELEN(gv), FALSE);
2319 if (autogv && (cv = GvCV(autogv)))
2321 tmpstr = sv_newmortal();
2322 gv_efullname3(tmpstr, gv, NULL);
2323 DIE(aTHX_ "Goto undefined subroutine &%"SVf"",tmpstr);
2325 DIE(aTHX_ "Goto undefined subroutine");
2328 /* First do some returnish stuff. */
2329 SvREFCNT_inc_simple_void(cv); /* avoid premature free during unwind */
2331 cxix = dopoptosub(cxstack_ix);
2333 DIE(aTHX_ "Can't goto subroutine outside a subroutine");
2334 if (cxix < cxstack_ix)
2338 /* ban goto in eval: see <20050521150056.GC20213@iabyn.com> */
2339 if (CxTYPE(cx) == CXt_EVAL) {
2341 DIE(aTHX_ "Can't goto subroutine from an eval-string");
2343 DIE(aTHX_ "Can't goto subroutine from an eval-block");
2345 else if (CxMULTICALL(cx))
2346 DIE(aTHX_ "Can't goto subroutine from a sort sub (or similar callback)");
2347 if (CxTYPE(cx) == CXt_SUB && cx->blk_sub.hasargs) {
2348 /* put @_ back onto stack */
2349 AV* av = cx->blk_sub.argarray;
2351 items = AvFILLp(av) + 1;
2352 EXTEND(SP, items+1); /* @_ could have been extended. */
2353 Copy(AvARRAY(av), SP + 1, items, SV*);
2354 SvREFCNT_dec(GvAV(PL_defgv));
2355 GvAV(PL_defgv) = cx->blk_sub.savearray;
2357 /* abandon @_ if it got reified */
2362 av_extend(av, items-1);
2364 PAD_SVl(0) = (SV*)(cx->blk_sub.argarray = av);
2367 else if (CvISXSUB(cv)) { /* put GvAV(defgv) back onto stack */
2368 AV* const av = GvAV(PL_defgv);
2369 items = AvFILLp(av) + 1;
2370 EXTEND(SP, items+1); /* @_ could have been extended. */
2371 Copy(AvARRAY(av), SP + 1, items, SV*);
2375 if (CxTYPE(cx) == CXt_SUB &&
2376 !(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth))
2377 SvREFCNT_dec(cx->blk_sub.cv);
2378 oldsave = PL_scopestack[PL_scopestack_ix - 1];
2379 LEAVE_SCOPE(oldsave);
2381 /* Now do some callish stuff. */
2383 SAVEFREESV(cv); /* later, undo the 'avoid premature free' hack */
2385 OP* const retop = cx->blk_sub.retop;
2390 for (index=0; index<items; index++)
2391 sv_2mortal(SP[-index]);
2394 /* XS subs don't have a CxSUB, so pop it */
2395 POPBLOCK(cx, PL_curpm);
2396 /* Push a mark for the start of arglist */
2399 (void)(*CvXSUB(cv))(aTHX_ cv);
2404 AV* const padlist = CvPADLIST(cv);
2405 if (CxTYPE(cx) == CXt_EVAL) {
2406 PL_in_eval = cx->blk_eval.old_in_eval;
2407 PL_eval_root = cx->blk_eval.old_eval_root;
2408 cx->cx_type = CXt_SUB;
2409 cx->blk_sub.hasargs = 0;
2411 cx->blk_sub.cv = cv;
2412 cx->blk_sub.olddepth = CvDEPTH(cv);
2415 if (CvDEPTH(cv) < 2)
2416 SvREFCNT_inc_void_NN(cv);
2418 if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION))
2419 sub_crush_depth(cv);
2420 pad_push(padlist, CvDEPTH(cv));
2423 PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv));
2424 if (cx->blk_sub.hasargs)
2426 AV* const av = (AV*)PAD_SVl(0);
2428 cx->blk_sub.savearray = GvAV(PL_defgv);
2429 GvAV(PL_defgv) = (AV*)SvREFCNT_inc_simple(av);
2430 CX_CURPAD_SAVE(cx->blk_sub);
2431 cx->blk_sub.argarray = av;
2433 if (items >= AvMAX(av) + 1) {
2434 SV **ary = AvALLOC(av);
2435 if (AvARRAY(av) != ary) {
2436 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
2437 SvPV_set(av, (char*)ary);
2439 if (items >= AvMAX(av) + 1) {
2440 AvMAX(av) = items - 1;
2441 Renew(ary,items+1,SV*);
2443 SvPV_set(av, (char*)ary);
2447 Copy(mark,AvARRAY(av),items,SV*);
2448 AvFILLp(av) = items - 1;
2449 assert(!AvREAL(av));
2451 /* transfer 'ownership' of refcnts to new @_ */
2461 if (PERLDB_SUB) { /* Checking curstash breaks DProf. */
2463 * We do not care about using sv to call CV;
2464 * it's for informational purposes only.
2466 SV * const sv = GvSV(PL_DBsub);
2468 if (PERLDB_SUB_NN) {
2469 const int type = SvTYPE(sv);
2470 if (type < SVt_PVIV && type != SVt_IV)
2471 sv_upgrade(sv, SVt_PVIV);
2473 SvIV_set(sv, PTR2IV(cv)); /* Do it the quickest way */
2475 gv_efullname3(sv, CvGV(cv), NULL);
2478 CV * const gotocv = get_cv("DB::goto", FALSE);
2480 PUSHMARK( PL_stack_sp );
2481 call_sv((SV*)gotocv, G_SCALAR | G_NODEBUG);
2486 RETURNOP(CvSTART(cv));
2490 label = SvPV_nolen_const(sv);
2491 if (!(do_dump || *label))
2492 DIE(aTHX_ must_have_label);
2495 else if (PL_op->op_flags & OPf_SPECIAL) {
2497 DIE(aTHX_ must_have_label);
2500 label = cPVOP->op_pv;
2502 if (label && *label) {
2503 OP *gotoprobe = NULL;
2504 bool leaving_eval = FALSE;
2505 bool in_block = FALSE;
2506 PERL_CONTEXT *last_eval_cx = NULL;
2510 PL_lastgotoprobe = NULL;
2512 for (ix = cxstack_ix; ix >= 0; ix--) {
2514 switch (CxTYPE(cx)) {
2516 leaving_eval = TRUE;
2517 if (!CxTRYBLOCK(cx)) {
2518 gotoprobe = (last_eval_cx ?
2519 last_eval_cx->blk_eval.old_eval_root :
2524 /* else fall through */
2526 gotoprobe = cx->blk_oldcop->op_sibling;
2532 gotoprobe = cx->blk_oldcop->op_sibling;
2535 gotoprobe = PL_main_root;
2538 if (CvDEPTH(cx->blk_sub.cv) && !CxMULTICALL(cx)) {
2539 gotoprobe = CvROOT(cx->blk_sub.cv);
2545 DIE(aTHX_ "Can't \"goto\" out of a pseudo block");
2548 DIE(aTHX_ "panic: goto");
2549 gotoprobe = PL_main_root;
2553 retop = dofindlabel(gotoprobe, label,
2554 enterops, enterops + GOTO_DEPTH);
2558 PL_lastgotoprobe = gotoprobe;
2561 DIE(aTHX_ "Can't find label %s", label);
2563 /* if we're leaving an eval, check before we pop any frames
2564 that we're not going to punt, otherwise the error
2567 if (leaving_eval && *enterops && enterops[1]) {
2569 for (i = 1; enterops[i]; i++)
2570 if (enterops[i]->op_type == OP_ENTERITER)
2571 DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
2574 /* pop unwanted frames */
2576 if (ix < cxstack_ix) {
2583 oldsave = PL_scopestack[PL_scopestack_ix];
2584 LEAVE_SCOPE(oldsave);
2587 /* push wanted frames */
2589 if (*enterops && enterops[1]) {
2590 OP * const oldop = PL_op;
2591 ix = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1;
2592 for (; enterops[ix]; ix++) {
2593 PL_op = enterops[ix];
2594 /* Eventually we may want to stack the needed arguments
2595 * for each op. For now, we punt on the hard ones. */
2596 if (PL_op->op_type == OP_ENTERITER)
2597 DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
2598 CALL_FPTR(PL_op->op_ppaddr)(aTHX);
2606 if (!retop) retop = PL_main_start;
2608 PL_restartop = retop;
2609 PL_do_undump = TRUE;
2613 PL_restartop = 0; /* hmm, must be GNU unexec().. */
2614 PL_do_undump = FALSE;
2631 if (anum == 1 && (PL_op->op_private & OPpEXIT_VMSISH))
2633 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
2636 PL_exit_flags |= PERL_EXIT_EXPECTED;
2638 /* KLUDGE: disable exit 0 in BEGIN blocks when we're just compiling */
2639 if (anum || !(PL_minus_c && PL_madskills))
2644 PUSHs(&PL_sv_undef);
2651 S_save_lines(pTHX_ AV *array, SV *sv)
2653 const char *s = SvPVX_const(sv);
2654 const char * const send = SvPVX_const(sv) + SvCUR(sv);
2657 while (s && s < send) {
2659 SV * const tmpstr = newSV(0);
2661 sv_upgrade(tmpstr, SVt_PVMG);
2662 t = strchr(s, '\n');
2668 sv_setpvn(tmpstr, s, t - s);
2669 av_store(array, line++, tmpstr);
2675 S_docatch_body(pTHX)
2683 S_docatch(pTHX_ OP *o)
2687 OP * const oldop = PL_op;
2691 assert(CATCH_GET == TRUE);
2698 assert(cxstack_ix >= 0);
2699 assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL);
2700 cxstack[cxstack_ix].blk_eval.cur_top_env = PL_top_env;
2705 /* die caught by an inner eval - continue inner loop */
2707 /* NB XXX we rely on the old popped CxEVAL still being at the top
2708 * of the stack; the way die_where() currently works, this
2709 * assumption is valid. In theory The cur_top_env value should be
2710 * returned in another global, the way retop (aka PL_restartop)
2712 assert(CxTYPE(&cxstack[cxstack_ix+1]) == CXt_EVAL);
2715 && cxstack[cxstack_ix+1].blk_eval.cur_top_env == PL_top_env)
2717 PL_op = PL_restartop;
2734 Perl_sv_compile_2op(pTHX_ SV *sv, OP** startop, const char *code, PAD** padp)
2735 /* sv Text to convert to OP tree. */
2736 /* startop op_free() this to undo. */
2737 /* code Short string id of the caller. */
2739 /* FIXME - how much of this code is common with pp_entereval? */
2740 dVAR; dSP; /* Make POPBLOCK work. */
2747 char tbuf[TYPE_DIGITS(long) + 12 + 10];
2748 char *tmpbuf = tbuf;
2751 CV* runcv = NULL; /* initialise to avoid compiler warnings */
2757 /* switch to eval mode */
2759 if (IN_PERL_COMPILETIME) {
2760 SAVECOPSTASH_FREE(&PL_compiling);
2761 CopSTASH_set(&PL_compiling, PL_curstash);
2763 if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
2764 SV * const sv = sv_newmortal();
2765 Perl_sv_setpvf(aTHX_ sv, "_<(%.10seval %lu)[%s:%"IVdf"]",
2766 code, (unsigned long)++PL_evalseq,
2767 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
2772 len = my_sprintf(tmpbuf, "_<(%.10s_eval %lu)", code,
2773 (unsigned long)++PL_evalseq);
2774 SAVECOPFILE_FREE(&PL_compiling);
2775 CopFILE_set(&PL_compiling, tmpbuf+2);
2776 SAVECOPLINE(&PL_compiling);
2777 CopLINE_set(&PL_compiling, 1);
2778 /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
2779 deleting the eval's FILEGV from the stash before gv_check() runs
2780 (i.e. before run-time proper). To work around the coredump that
2781 ensues, we always turn GvMULTI_on for any globals that were
2782 introduced within evals. See force_ident(). GSAR 96-10-12 */
2783 safestr = savepvn(tmpbuf, len);
2784 SAVEDELETE(PL_defstash, safestr, len);
2786 #ifdef OP_IN_REGISTER
2792 /* we get here either during compilation, or via pp_regcomp at runtime */
2793 runtime = IN_PERL_RUNTIME;
2795 runcv = find_runcv(NULL);
2798 PL_op->op_type = OP_ENTEREVAL;
2799 PL_op->op_flags = 0; /* Avoid uninit warning. */
2800 PUSHBLOCK(cx, CXt_EVAL|(IN_PERL_COMPILETIME ? 0 : CXp_REAL), SP);
2801 PUSHEVAL(cx, 0, NULL);
2804 rop = doeval(G_SCALAR, startop, runcv, PL_curcop->cop_seq);
2806 rop = doeval(G_SCALAR, startop, PL_compcv, PL_cop_seqmax);
2807 POPBLOCK(cx,PL_curpm);
2810 (*startop)->op_type = OP_NULL;
2811 (*startop)->op_ppaddr = PL_ppaddr[OP_NULL];
2813 /* XXX DAPM do this properly one year */
2814 *padp = (AV*)SvREFCNT_inc_simple(PL_comppad);
2816 if (IN_PERL_COMPILETIME)
2817 CopHINTS_set(&PL_compiling, PL_hints);
2818 #ifdef OP_IN_REGISTER
2821 PERL_UNUSED_VAR(newsp);
2822 PERL_UNUSED_VAR(optype);
2829 =for apidoc find_runcv
2831 Locate the CV corresponding to the currently executing sub or eval.
2832 If db_seqp is non_null, skip CVs that are in the DB package and populate
2833 *db_seqp with the cop sequence number at the point that the DB:: code was
2834 entered. (allows debuggers to eval in the scope of the breakpoint rather
2835 than in the scope of the debugger itself).
2841 Perl_find_runcv(pTHX_ U32 *db_seqp)
2847 *db_seqp = PL_curcop->cop_seq;
2848 for (si = PL_curstackinfo; si; si = si->si_prev) {
2850 for (ix = si->si_cxix; ix >= 0; ix--) {
2851 const PERL_CONTEXT *cx = &(si->si_cxstack[ix]);
2852 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
2853 CV * const cv = cx->blk_sub.cv;
2854 /* skip DB:: code */
2855 if (db_seqp && PL_debstash && CvSTASH(cv) == PL_debstash) {
2856 *db_seqp = cx->blk_oldcop->cop_seq;
2861 else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx))
2869 /* Compile a require/do, an eval '', or a /(?{...})/.
2870 * In the last case, startop is non-null, and contains the address of
2871 * a pointer that should be set to the just-compiled code.
2872 * outside is the lexically enclosing CV (if any) that invoked us.
2875 /* With USE_5005THREADS, eval_owner must be held on entry to doeval */
2877 S_doeval(pTHX_ int gimme, OP** startop, CV* outside, U32 seq)
2880 OP * const saveop = PL_op;
2882 PL_in_eval = ((saveop && saveop->op_type == OP_REQUIRE)
2883 ? (EVAL_INREQUIRE | (PL_in_eval & EVAL_INEVAL))
2888 SAVESPTR(PL_compcv);
2889 PL_compcv = (CV*)newSV(0);
2890 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2891 CvEVAL_on(PL_compcv);
2892 assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL);
2893 cxstack[cxstack_ix].blk_eval.cv = PL_compcv;
2895 CvOUTSIDE_SEQ(PL_compcv) = seq;
2896 CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc_simple(outside);
2898 /* set up a scratch pad */
2900 CvPADLIST(PL_compcv) = pad_new(padnew_SAVE);
2904 SAVEMORTALIZESV(PL_compcv); /* must remain until end of current statement */
2906 /* make sure we compile in the right package */
2908 if (CopSTASH_ne(PL_curcop, PL_curstash)) {
2909 SAVESPTR(PL_curstash);
2910 PL_curstash = CopSTASH(PL_curcop);
2912 SAVESPTR(PL_beginav);
2913 PL_beginav = newAV();
2914 SAVEFREESV(PL_beginav);
2915 SAVEI32(PL_error_count);
2918 SAVEI32(PL_madskills);
2922 /* try to compile it */
2924 PL_eval_root = NULL;
2926 PL_curcop = &PL_compiling;
2927 CopARYBASE_set(PL_curcop, 0);
2928 if (saveop && (saveop->op_type != OP_REQUIRE) && (saveop->op_flags & OPf_SPECIAL))
2929 PL_in_eval |= EVAL_KEEPERR;
2931 sv_setpvn(ERRSV,"",0);
2932 if (yyparse() || PL_error_count || !PL_eval_root) {
2933 SV **newsp; /* Used by POPBLOCK. */
2934 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
2935 I32 optype = 0; /* Might be reset by POPEVAL. */
2940 op_free(PL_eval_root);
2941 PL_eval_root = NULL;
2943 SP = PL_stack_base + POPMARK; /* pop original mark */
2945 POPBLOCK(cx,PL_curpm);
2951 msg = SvPVx_nolen_const(ERRSV);
2952 if (optype == OP_REQUIRE) {
2953 const SV * const nsv = cx->blk_eval.old_namesv;
2954 (void)hv_store(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv),
2956 DIE(aTHX_ "%sCompilation failed in require",
2957 *msg ? msg : "Unknown error\n");
2960 POPBLOCK(cx,PL_curpm);
2962 Perl_croak(aTHX_ "%sCompilation failed in regexp",
2963 (*msg ? msg : "Unknown error\n"));
2967 sv_setpv(ERRSV, "Compilation error");
2970 PERL_UNUSED_VAR(newsp);
2973 CopLINE_set(&PL_compiling, 0);
2975 *startop = PL_eval_root;
2977 SAVEFREEOP(PL_eval_root);
2979 /* Set the context for this new optree.
2980 * If the last op is an OP_REQUIRE, force scalar context.
2981 * Otherwise, propagate the context from the eval(). */
2982 if (PL_eval_root->op_type == OP_LEAVEEVAL
2983 && cUNOPx(PL_eval_root)->op_first->op_type == OP_LINESEQ
2984 && cLISTOPx(cUNOPx(PL_eval_root)->op_first)->op_last->op_type
2986 scalar(PL_eval_root);
2987 else if (gimme & G_VOID)
2988 scalarvoid(PL_eval_root);
2989 else if (gimme & G_ARRAY)
2992 scalar(PL_eval_root);
2994 DEBUG_x(dump_eval());
2996 /* Register with debugger: */
2997 if (PERLDB_INTER && saveop->op_type == OP_REQUIRE) {
2998 CV * const cv = get_cv("DB::postponed", FALSE);
3002 XPUSHs((SV*)CopFILEGV(&PL_compiling));
3004 call_sv((SV*)cv, G_DISCARD);
3008 /* compiled okay, so do it */
3010 CvDEPTH(PL_compcv) = 1;
3011 SP = PL_stack_base + POPMARK; /* pop original mark */
3012 PL_op = saveop; /* The caller may need it. */
3013 PL_lex_state = LEX_NOTPARSING; /* $^S needs this. */
3015 RETURNOP(PL_eval_start);
3019 S_check_type_and_open(pTHX_ const char *name, const char *mode)
3022 const int st_rc = PerlLIO_stat(name, &st);
3023 if (st_rc < 0 || S_ISDIR(st.st_mode) || S_ISBLK(st.st_mode)) {
3027 return PerlIO_open(name, mode);
3031 S_doopen_pm(pTHX_ const char *name, const char *mode)
3033 #ifndef PERL_DISABLE_PMC
3034 const STRLEN namelen = strlen(name);
3037 if (namelen > 3 && strEQ(name + namelen - 3, ".pm")) {
3038 SV * const pmcsv = Perl_newSVpvf(aTHX_ "%s%c", name, 'c');
3039 const char * const pmc = SvPV_nolen_const(pmcsv);
3041 if (PerlLIO_stat(pmc, &pmcstat) < 0) {
3042 fp = check_type_and_open(name, mode);
3045 fp = check_type_and_open(pmc, mode);
3047 SvREFCNT_dec(pmcsv);
3050 fp = check_type_and_open(name, mode);
3054 return check_type_and_open(name, mode);
3055 #endif /* !PERL_DISABLE_PMC */
3061 register PERL_CONTEXT *cx;
3065 const char *tryname = NULL;
3067 const I32 gimme = GIMME_V;
3068 int filter_has_file = 0;
3069 PerlIO *tryrsfp = NULL;
3070 GV *filter_child_proc = NULL;
3071 SV *filter_state = NULL;
3072 SV *filter_sub = NULL;
3078 if ( (SvNIOKp(sv) || SvVOK(sv)) && PL_op->op_type != OP_DOFILE) {
3079 if ( SvVOK(sv) && ckWARN(WARN_PORTABLE) ) /* require v5.6.1 */
3080 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
3081 "v-string in use/require non-portable");
3083 sv = new_version(sv);
3084 if (!sv_derived_from(PL_patchlevel, "version"))
3085 upg_version(PL_patchlevel);
3086 if (cUNOP->op_first->op_type == OP_CONST && cUNOP->op_first->op_private & OPpCONST_NOVER) {
3087 if ( vcmp(sv,PL_patchlevel) < 0 )
3088 DIE(aTHX_ "Perls since %"SVf" too modern--this is %"SVf", stopped",
3089 vnormal(sv), vnormal(PL_patchlevel));
3092 if ( vcmp(sv,PL_patchlevel) > 0 )
3093 DIE(aTHX_ "Perl %"SVf" required--this is only %"SVf", stopped",
3094 vnormal(sv), vnormal(PL_patchlevel));
3099 name = SvPV_const(sv, len);
3100 if (!(name && len > 0 && *name))
3101 DIE(aTHX_ "Null filename used");
3102 TAINT_PROPER("require");
3103 if (PL_op->op_type == OP_REQUIRE) {
3104 SV * const * const svp = hv_fetch(GvHVn(PL_incgv), name, len, 0);
3106 if (*svp != &PL_sv_undef)
3109 DIE(aTHX_ "Compilation failed in require");
3113 /* prepare to compile file */
3115 if (path_is_absolute(name)) {
3117 tryrsfp = doopen_pm(name,PERL_SCRIPT_MODE);
3119 #ifdef MACOS_TRADITIONAL
3123 MacPerl_CanonDir(name, newname, 1);
3124 if (path_is_absolute(newname)) {
3126 tryrsfp = doopen_pm(newname,PERL_SCRIPT_MODE);
3131 AV * const ar = GvAVn(PL_incgv);
3135 if ((unixname = tounixspec(name, NULL)) != NULL)
3139 for (i = 0; i <= AvFILL(ar); i++) {
3140 SV *dirsv = *av_fetch(ar, i, TRUE);
3146 if (SvTYPE(SvRV(loader)) == SVt_PVAV
3147 && !sv_isobject(loader))
3149 loader = *av_fetch((AV *)SvRV(loader), 0, TRUE);
3152 Perl_sv_setpvf(aTHX_ namesv, "/loader/0x%"UVxf"/%s",
3153 PTR2UV(SvRV(dirsv)), name);
3154 tryname = SvPVX_const(namesv);
3165 if (sv_isobject(loader))
3166 count = call_method("INC", G_ARRAY);
3168 count = call_sv(loader, G_ARRAY);
3178 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVGV) {
3182 if (SvTYPE(arg) == SVt_PVGV) {
3183 IO *io = GvIO((GV *)arg);
3188 tryrsfp = IoIFP(io);
3189 if (IoTYPE(io) == IoTYPE_PIPE) {
3190 /* reading from a child process doesn't
3191 nest -- when returning from reading
3192 the inner module, the outer one is
3193 unreadable (closed?) I've tried to
3194 save the gv to manage the lifespan of
3195 the pipe, but this didn't help. XXX */
3196 filter_child_proc = (GV *)arg;
3197 SvREFCNT_inc_simple_void(filter_child_proc);
3200 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
3201 PerlIO_close(IoOFP(io));
3213 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVCV) {
3215 SvREFCNT_inc_void_NN(filter_sub);
3218 filter_state = SP[i];
3219 SvREFCNT_inc_simple_void(filter_state);
3223 tryrsfp = PerlIO_open(BIT_BUCKET,
3239 filter_has_file = 0;
3240 if (filter_child_proc) {
3241 SvREFCNT_dec(filter_child_proc);
3242 filter_child_proc = NULL;
3245 SvREFCNT_dec(filter_state);
3246 filter_state = NULL;
3249 SvREFCNT_dec(filter_sub);
3254 if (!path_is_absolute(name)
3255 #ifdef MACOS_TRADITIONAL
3256 /* We consider paths of the form :a:b ambiguous and interpret them first
3257 as global then as local
3259 || (*name == ':' && name[1] != ':' && strchr(name+2, ':'))
3262 const char *dir = SvPVx_nolen_const(dirsv);
3263 #ifdef MACOS_TRADITIONAL
3267 MacPerl_CanonDir(name, buf2, 1);
3268 Perl_sv_setpvf(aTHX_ namesv, "%s%s", MacPerl_CanonDir(dir, buf1, 0), buf2+(buf2[0] == ':'));
3272 if ((unixdir = tounixpath(dir, NULL)) == NULL)
3274 sv_setpv(namesv, unixdir);
3275 sv_catpv(namesv, unixname);
3277 # ifdef __SYMBIAN32__
3278 if (PL_origfilename[0] &&
3279 PL_origfilename[1] == ':' &&
3280 !(dir[0] && dir[1] == ':'))
3281 Perl_sv_setpvf(aTHX_ namesv,
3286 Perl_sv_setpvf(aTHX_ namesv,
3290 Perl_sv_setpvf(aTHX_ namesv, "%s/%s", dir, name);
3294 TAINT_PROPER("require");
3295 tryname = SvPVX_const(namesv);
3296 tryrsfp = doopen_pm(tryname, PERL_SCRIPT_MODE);
3298 if (tryname[0] == '.' && tryname[1] == '/')
3307 SAVECOPFILE_FREE(&PL_compiling);
3308 CopFILE_set(&PL_compiling, tryrsfp ? tryname : name);
3309 SvREFCNT_dec(namesv);
3311 if (PL_op->op_type == OP_REQUIRE) {
3312 const char *msgstr = name;
3313 if(errno == EMFILE) {
3315 = sv_2mortal(Perl_newSVpvf(aTHX_ "%s: %s", msgstr,
3317 msgstr = SvPV_nolen_const(msg);
3319 if (namesv) { /* did we lookup @INC? */
3320 AV * const ar = GvAVn(PL_incgv);
3322 SV * const msg = sv_2mortal(Perl_newSVpvf(aTHX_
3323 "%s in @INC%s%s (@INC contains:",
3325 (instr(msgstr, ".h ")
3326 ? " (change .h to .ph maybe?)" : ""),
3327 (instr(msgstr, ".ph ")
3328 ? " (did you run h2ph?)" : "")
3331 for (i = 0; i <= AvFILL(ar); i++) {
3332 sv_catpvs(msg, " ");
3333 sv_catsv(msg, *av_fetch(ar, i, TRUE));
3335 sv_catpvs(msg, ")");
3336 msgstr = SvPV_nolen_const(msg);
3339 DIE(aTHX_ "Can't locate %s", msgstr);
3345 SETERRNO(0, SS_NORMAL);
3347 /* Assume success here to prevent recursive requirement. */
3348 /* name is never assigned to again, so len is still strlen(name) */
3349 /* Check whether a hook in @INC has already filled %INC */
3351 (void)hv_store(GvHVn(PL_incgv), name, len, newSVpv(CopFILE(&PL_compiling),0),0);
3353 SV** const svp = hv_fetch(GvHVn(PL_incgv), name, len, 0);
3355 (void)hv_store(GvHVn(PL_incgv), name, len, SvREFCNT_inc_simple(hook_sv), 0 );
3360 lex_start(sv_2mortal(newSVpvs("")));
3361 SAVEGENERICSV(PL_rsfp_filters);
3362 PL_rsfp_filters = NULL;
3367 SAVECOPWARNINGS(&PL_compiling);
3368 if (PL_dowarn & G_WARN_ALL_ON)
3369 PL_compiling.cop_warnings = pWARN_ALL ;
3370 else if (PL_dowarn & G_WARN_ALL_OFF)
3371 PL_compiling.cop_warnings = pWARN_NONE ;
3372 else if (PL_taint_warn) {
3373 PL_compiling.cop_warnings
3374 = Perl_new_warnings_bitfield(aTHX_ NULL, WARN_TAINTstring, WARNsize);
3377 PL_compiling.cop_warnings = pWARN_STD ;
3378 SAVESPTR(PL_compiling.cop_io);
3379 PL_compiling.cop_io = NULL;
3381 if (filter_sub || filter_child_proc) {
3382 SV * const datasv = filter_add(S_run_user_filter, NULL);
3383 IoLINES(datasv) = filter_has_file;
3384 IoFMT_GV(datasv) = (GV *)filter_child_proc;
3385 IoTOP_GV(datasv) = (GV *)filter_state;
3386 IoBOTTOM_GV(datasv) = (GV *)filter_sub;
3389 /* switch to eval mode */
3390 PUSHBLOCK(cx, CXt_EVAL, SP);
3391 PUSHEVAL(cx, name, NULL);
3392 cx->blk_eval.retop = PL_op->op_next;
3394 SAVECOPLINE(&PL_compiling);
3395 CopLINE_set(&PL_compiling, 0);
3399 /* Store and reset encoding. */
3400 encoding = PL_encoding;
3403 op = DOCATCH(doeval(gimme, NULL, NULL, PL_curcop->cop_seq));
3405 /* Restore encoding. */
3406 PL_encoding = encoding;
3414 register PERL_CONTEXT *cx;
3416 const I32 gimme = GIMME_V;
3417 const I32 was = PL_sub_generation;
3418 char tbuf[TYPE_DIGITS(long) + 12];
3419 char *tmpbuf = tbuf;
3425 HV *saved_hh = NULL;
3427 if (PL_op->op_private & OPpEVAL_HAS_HH) {
3428 saved_hh = (HV*) SvREFCNT_inc(POPs);
3432 if (!SvPV_nolen_const(sv))
3434 TAINT_PROPER("eval");
3440 /* switch to eval mode */
3442 if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
3443 SV * const temp_sv = sv_newmortal();
3444 Perl_sv_setpvf(aTHX_ temp_sv, "_<(eval %lu)[%s:%"IVdf"]",
3445 (unsigned long)++PL_evalseq,
3446 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
3447 tmpbuf = SvPVX(temp_sv);
3448 len = SvCUR(temp_sv);
3451 len = my_sprintf(tmpbuf, "_<(eval %lu)", (unsigned long)++PL_evalseq);
3452 SAVECOPFILE_FREE(&PL_compiling);
3453 CopFILE_set(&PL_compiling, tmpbuf+2);
3454 SAVECOPLINE(&PL_compiling);
3455 CopLINE_set(&PL_compiling, 1);
3456 /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
3457 deleting the eval's FILEGV from the stash before gv_check() runs
3458 (i.e. before run-time proper). To work around the coredump that
3459 ensues, we always turn GvMULTI_on for any globals that were
3460 introduced within evals. See force_ident(). GSAR 96-10-12 */
3461 safestr = savepvn(tmpbuf, len);
3462 SAVEDELETE(PL_defstash, safestr, len);
3464 PL_hints = PL_op->op_targ;
3466 GvHV(PL_hintgv) = saved_hh;
3467 SAVECOPWARNINGS(&PL_compiling);
3468 PL_compiling.cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings);
3469 SAVESPTR(PL_compiling.cop_io);
3470 if (specialCopIO(PL_curcop->cop_io))
3471 PL_compiling.cop_io = PL_curcop->cop_io;
3473 PL_compiling.cop_io = newSVsv(PL_curcop->cop_io);
3474 SAVEFREESV(PL_compiling.cop_io);
3476 if (PL_compiling.cop_hints) {
3477 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints);
3479 PL_compiling.cop_hints = PL_curcop->cop_hints;
3480 if (PL_compiling.cop_hints) {
3482 PL_compiling.cop_hints->refcounted_he_refcnt++;
3483 HINTS_REFCNT_UNLOCK;
3485 /* special case: an eval '' executed within the DB package gets lexically
3486 * placed in the first non-DB CV rather than the current CV - this
3487 * allows the debugger to execute code, find lexicals etc, in the
3488 * scope of the code being debugged. Passing &seq gets find_runcv
3489 * to do the dirty work for us */
3490 runcv = find_runcv(&seq);
3492 PUSHBLOCK(cx, (CXt_EVAL|CXp_REAL), SP);
3493 PUSHEVAL(cx, 0, NULL);
3494 cx->blk_eval.retop = PL_op->op_next;
3496 /* prepare to compile string */
3498 if (PERLDB_LINE && PL_curstash != PL_debstash)
3499 save_lines(CopFILEAV(&PL_compiling), PL_linestr);
3501 ret = doeval(gimme, NULL, runcv, seq);
3502 if (PERLDB_INTER && was != (I32)PL_sub_generation /* Some subs defined here. */
3503 && ret != PL_op->op_next) { /* Successive compilation. */
3504 strcpy(safestr, "_<(eval )"); /* Anything fake and short. */
3506 return DOCATCH(ret);
3516 register PERL_CONTEXT *cx;
3518 const U8 save_flags = PL_op -> op_flags;
3523 retop = cx->blk_eval.retop;
3526 if (gimme == G_VOID)
3528 else if (gimme == G_SCALAR) {
3531 if (SvFLAGS(TOPs) & SVs_TEMP)
3534 *MARK = sv_mortalcopy(TOPs);
3538 *MARK = &PL_sv_undef;
3543 /* in case LEAVE wipes old return values */
3544 for (mark = newsp + 1; mark <= SP; mark++) {
3545 if (!(SvFLAGS(*mark) & SVs_TEMP)) {
3546 *mark = sv_mortalcopy(*mark);
3547 TAINT_NOT; /* Each item is independent */
3551 PL_curpm = newpm; /* Don't pop $1 et al till now */
3554 assert(CvDEPTH(PL_compcv) == 1);
3556 CvDEPTH(PL_compcv) = 0;
3559 if (optype == OP_REQUIRE &&
3560 !(gimme == G_SCALAR ? SvTRUE(*SP) : SP > newsp))
3562 /* Unassume the success we assumed earlier. */
3563 SV * const nsv = cx->blk_eval.old_namesv;
3564 (void)hv_delete(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv), G_DISCARD);
3565 retop = Perl_die(aTHX_ "%"SVf" did not return a true value", nsv);
3566 /* die_where() did LEAVE, or we won't be here */
3570 if (!(save_flags & OPf_SPECIAL))
3571 sv_setpvn(ERRSV,"",0);
3577 /* Common code for Perl_call_sv and Perl_fold_constants, put here to keep it
3578 close to the related Perl_create_eval_scope. */
3580 Perl_delete_eval_scope(pTHX)
3585 register PERL_CONTEXT *cx;
3592 PERL_UNUSED_VAR(newsp);
3593 PERL_UNUSED_VAR(gimme);
3594 PERL_UNUSED_VAR(optype);
3597 /* Common-ish code salvaged from Perl_call_sv and pp_entertry, because it was
3598 also needed by Perl_fold_constants. */
3600 Perl_create_eval_scope(pTHX_ U32 flags)
3603 const I32 gimme = GIMME_V;
3608 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
3610 PL_eval_root = PL_op; /* Only needed so that goto works right. */
3612 PL_in_eval = EVAL_INEVAL;
3613 if (flags & G_KEEPERR)
3614 PL_in_eval |= EVAL_KEEPERR;
3616 sv_setpvn(ERRSV,"",0);
3617 if (flags & G_FAKINGEVAL) {
3618 PL_eval_root = PL_op; /* Only needed so that goto works right. */
3626 PERL_CONTEXT *cx = create_eval_scope(0);
3627 cx->blk_eval.retop = cLOGOP->op_other->op_next;
3628 return DOCATCH(PL_op->op_next);
3637 register PERL_CONTEXT *cx;
3642 PERL_UNUSED_VAR(optype);
3645 if (gimme == G_VOID)
3647 else if (gimme == G_SCALAR) {
3651 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
3654 *MARK = sv_mortalcopy(TOPs);
3658 *MARK = &PL_sv_undef;
3663 /* in case LEAVE wipes old return values */
3665 for (mark = newsp + 1; mark <= SP; mark++) {
3666 if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) {
3667 *mark = sv_mortalcopy(*mark);
3668 TAINT_NOT; /* Each item is independent */
3672 PL_curpm = newpm; /* Don't pop $1 et al till now */
3675 sv_setpvn(ERRSV,"",0);
3682 register PERL_CONTEXT *cx;
3683 const I32 gimme = GIMME_V;
3688 if (PL_op->op_targ == 0) {
3689 SV ** const defsv_p = &GvSV(PL_defgv);
3690 *defsv_p = newSVsv(POPs);
3691 SAVECLEARSV(*defsv_p);
3694 sv_setsv(PAD_SV(PL_op->op_targ), POPs);
3696 PUSHBLOCK(cx, CXt_GIVEN, SP);
3705 register PERL_CONTEXT *cx;
3709 PERL_UNUSED_CONTEXT;
3712 assert(CxTYPE(cx) == CXt_GIVEN);
3717 PL_curpm = newpm; /* pop $1 et al */
3724 /* Helper routines used by pp_smartmatch */
3727 S_make_matcher(pTHX_ regexp *re)
3730 PMOP *matcher = (PMOP *) newPMOP(OP_MATCH, OPf_WANT_SCALAR | OPf_STACKED);
3731 PM_SETRE(matcher, ReREFCNT_inc(re));
3733 SAVEFREEOP((OP *) matcher);
3741 S_matcher_matches_sv(pTHX_ PMOP *matcher, SV *sv)
3746 PL_op = (OP *) matcher;
3751 return (SvTRUEx(POPs));
3756 S_destroy_matcher(pTHX_ PMOP *matcher)
3759 PERL_UNUSED_ARG(matcher);
3764 /* Do a smart match */
3767 return do_smartmatch(NULL, NULL);
3770 /* This version of do_smartmatch() implements the following
3771 table of smart matches:
3773 $a $b Type of Match Implied Matching Code
3774 ====== ===== ===================== =============
3775 (overloading trumps everything)
3777 Code[+] Code[+] referential equality match if refaddr($a) == refaddr($b)
3778 Any Code[+] scalar sub truth match if $b->($a)
3780 Hash Hash hash keys identical match if sort(keys(%$a)) ÈeqÇ sort(keys(%$b))
3781 Hash Array hash value slice truth match if $a->{any(@$b)}
3782 Hash Regex hash key grep match if any(keys(%$a)) =~ /$b/
3783 Hash Any hash entry existence match if exists $a->{$b}
3785 Array Array arrays are identical[*] match if $a È~~Ç $b
3786 Array Regex array grep match if any(@$a) =~ /$b/
3787 Array Num array contains number match if any($a) == $b
3788 Array Any array contains string match if any($a) eq $b
3790 Any undef undefined match if !defined $a
3791 Any Regex pattern match match if $a =~ /$b/
3792 Code() Code() results are equal match if $a->() eq $b->()
3793 Any Code() simple closure truth match if $b->() (ignoring $a)
3794 Num numish[!] numeric equality match if $a == $b
3795 Any Str string equality match if $a eq $b
3796 Any Num numeric equality match if $a == $b
3798 Any Any string equality match if $a eq $b
3801 + - this must be a code reference whose prototype (if present) is not ""
3802 (subs with a "" prototype are dealt with by the 'Code()' entry lower down)
3803 * - if a circular reference is found, we fall back to referential equality
3804 ! - either a real number, or a string that looks_like_number()
3809 S_do_smartmatch(pTHX_ HV *seen_this, HV *seen_other)
3814 SV *e = TOPs; /* e is for 'expression' */
3815 SV *d = TOPm1s; /* d is for 'default', as in PL_defgv */
3818 regexp *this_regex, *other_regex;
3820 # define NOT_EMPTY_PROTO(cv) (!SvPOK(cv) || SvCUR(cv) == 0)
3822 # define SM_REF(type) ( \
3823 (SvROK(d) && (SvTYPE(this = SvRV(d)) == SVt_##type) && (other = e)) \
3824 || (SvROK(e) && (SvTYPE(this = SvRV(e)) == SVt_##type) && (other = d)))
3826 # define SM_CV_NEP /* Find a code ref without an empty prototype */ \
3827 ((SvROK(d) && (SvTYPE(this = SvRV(d)) == SVt_PVCV) \
3828 && NOT_EMPTY_PROTO(this) && (other = e)) \
3829 || (SvROK(e) && (SvTYPE(this = SvRV(e)) == SVt_PVCV) \
3830 && NOT_EMPTY_PROTO(this) && (other = d)))
3832 # define SM_REGEX ( \
3833 (SvROK(d) && SvMAGICAL(this = SvRV(d)) \
3834 && (mg = mg_find(this, PERL_MAGIC_qr)) \
3835 && (this_regex = (regexp *)mg->mg_obj) \
3838 (SvROK(e) && SvMAGICAL(this = SvRV(e)) \
3839 && (mg = mg_find(this, PERL_MAGIC_qr)) \
3840 && (this_regex = (regexp *)mg->mg_obj) \
3844 # define SM_OTHER_REF(type) \
3845 (SvROK(other) && SvTYPE(SvRV(other)) == SVt_##type)
3847 # define SM_OTHER_REGEX (SvROK(other) && SvMAGICAL(SvRV(other)) \
3848 && (mg = mg_find(SvRV(other), PERL_MAGIC_qr)) \
3849 && (other_regex = (regexp *)mg->mg_obj))
3852 # define SM_SEEN_THIS(sv) hv_exists_ent(seen_this, \
3853 sv_2mortal(newSViv(PTR2IV(sv))), 0)
3855 # define SM_SEEN_OTHER(sv) hv_exists_ent(seen_other, \
3856 sv_2mortal(newSViv(PTR2IV(sv))), 0)
3858 tryAMAGICbinSET(smart, 0);
3860 SP -= 2; /* Pop the values */
3862 /* Take care only to invoke mg_get() once for each argument.
3863 * Currently we do this by copying the SV if it's magical. */
3866 d = sv_mortalcopy(d);
3873 e = sv_mortalcopy(e);
3878 if ( SM_OTHER_REF(PVCV) && NOT_EMPTY_PROTO(SvRV(other)) )
3880 if (this == SvRV(other))
3891 c = call_sv(this, G_SCALAR);
3895 else if (SvTEMP(TOPs))
3901 else if (SM_REF(PVHV)) {
3902 if (SM_OTHER_REF(PVHV)) {
3903 /* Check that the key-sets are identical */
3905 HV *other_hv = (HV *) SvRV(other);
3907 bool other_tied = FALSE;
3908 U32 this_key_count = 0,
3909 other_key_count = 0;
3911 /* Tied hashes don't know how many keys they have. */
3912 if (SvTIED_mg(this, PERL_MAGIC_tied)) {
3915 else if (SvTIED_mg((SV *) other_hv, PERL_MAGIC_tied)) {
3916 HV * const temp = other_hv;
3917 other_hv = (HV *) this;
3921 if (SvTIED_mg((SV *) other_hv, PERL_MAGIC_tied))
3924 if (!tied && HvUSEDKEYS((HV *) this) != HvUSEDKEYS(other_hv))
3927 /* The hashes have the same number of keys, so it suffices
3928 to check that one is a subset of the other. */
3929 (void) hv_iterinit((HV *) this);
3930 while ( (he = hv_iternext((HV *) this)) ) {
3932 char * const key = hv_iterkey(he, &key_len);
3936 if(!hv_exists(other_hv, key, key_len)) {
3937 (void) hv_iterinit((HV *) this); /* reset iterator */
3943 (void) hv_iterinit(other_hv);
3944 while ( hv_iternext(other_hv) )
3948 other_key_count = HvUSEDKEYS(other_hv);
3950 if (this_key_count != other_key_count)
3955 else if (SM_OTHER_REF(PVAV)) {
3956 AV * const other_av = (AV *) SvRV(other);
3957 const I32 other_len = av_len(other_av) + 1;
3960 if (HvUSEDKEYS((HV *) this) != other_len)
3963 for(i = 0; i < other_len; ++i) {
3964 SV ** const svp = av_fetch(other_av, i, FALSE);
3968 if (!svp) /* ??? When can this happen? */
3971 key = SvPV(*svp, key_len);
3972 if(!hv_exists((HV *) this, key, key_len))
3977 else if (SM_OTHER_REGEX) {
3978 PMOP * const matcher = make_matcher(other_regex);
3981 (void) hv_iterinit((HV *) this);
3982 while ( (he = hv_iternext((HV *) this)) ) {
3983 if (matcher_matches_sv(matcher, hv_iterkeysv(he))) {
3984 (void) hv_iterinit((HV *) this);
3985 destroy_matcher(matcher);
3989 destroy_matcher(matcher);
3993 if (hv_exists_ent((HV *) this, other, 0))
3999 else if (SM_REF(PVAV)) {
4000 if (SM_OTHER_REF(PVAV)) {
4001 AV *other_av = (AV *) SvRV(other);
4002 if (av_len((AV *) this) != av_len(other_av))
4006 const I32 other_len = av_len(other_av);
4008 if (NULL == seen_this) {
4009 seen_this = newHV();
4010 (void) sv_2mortal((SV *) seen_this);
4012 if (NULL == seen_other) {
4013 seen_this = newHV();
4014 (void) sv_2mortal((SV *) seen_other);
4016 for(i = 0; i <= other_len; ++i) {
4017 SV * const * const this_elem = av_fetch((AV *)this, i, FALSE);
4018 SV * const * const other_elem = av_fetch(other_av, i, FALSE);
4020 if (!this_elem || !other_elem) {
4021 if (this_elem || other_elem)
4024 else if (SM_SEEN_THIS(*this_elem)
4025 || SM_SEEN_OTHER(*other_elem))
4027 if (*this_elem != *other_elem)
4031 hv_store_ent(seen_this,
4032 sv_2mortal(newSViv(PTR2IV(*this_elem))),
4034 hv_store_ent(seen_other,
4035 sv_2mortal(newSViv(PTR2IV(*other_elem))),
4041 (void) do_smartmatch(seen_this, seen_other);
4051 else if (SM_OTHER_REGEX) {
4052 PMOP * const matcher = make_matcher(other_regex);
4053 const I32 this_len = av_len((AV *) this);
4056 for(i = 0; i <= this_len; ++i) {
4057 SV * const * const svp = av_fetch((AV *)this, i, FALSE);
4058 if (svp && matcher_matches_sv(matcher, *svp)) {
4059 destroy_matcher(matcher);
4063 destroy_matcher(matcher);
4066 else if (SvIOK(other) || SvNOK(other)) {
4069 for(i = 0; i <= AvFILL((AV *) this); ++i) {
4070 SV * const * const svp = av_fetch((AV *)this, i, FALSE);
4077 if (CopHINTS_get(PL_curcop) & HINT_INTEGER)
4087 else if (SvPOK(other)) {
4088 const I32 this_len = av_len((AV *) this);
4091 for(i = 0; i <= this_len; ++i) {
4092 SV * const * const svp = av_fetch((AV *)this, i, FALSE);
4107 else if (!SvOK(d) || !SvOK(e)) {
4108 if (!SvOK(d) && !SvOK(e))
4113 else if (SM_REGEX) {
4114 PMOP * const matcher = make_matcher(this_regex);
4117 PUSHs(matcher_matches_sv(matcher, other)
4120 destroy_matcher(matcher);
4123 else if (SM_REF(PVCV)) {
4125 /* This must be a null-prototyped sub, because we
4126 already checked for the other kind. */
4132 c = call_sv(this, G_SCALAR);
4135 PUSHs(&PL_sv_undef);
4136 else if (SvTEMP(TOPs))
4139 if (SM_OTHER_REF(PVCV)) {
4140 /* This one has to be null-proto'd too.
4141 Call both of 'em, and compare the results */
4143 c = call_sv(SvRV(other), G_SCALAR);
4146 PUSHs(&PL_sv_undef);
4147 else if (SvTEMP(TOPs))
4159 else if ( ((SvIOK(d) || SvNOK(d)) && (this = d) && (other = e))
4160 || ((SvIOK(e) || SvNOK(e)) && (this = e) && (other = d)) )
4162 if (SvPOK(other) && !looks_like_number(other)) {
4163 /* String comparison */
4168 /* Otherwise, numeric comparison */
4171 if (CopHINTS_get(PL_curcop) & HINT_INTEGER)
4182 /* As a last resort, use string comparison */
4191 register PERL_CONTEXT *cx;
4192 const I32 gimme = GIMME_V;
4194 /* This is essentially an optimization: if the match
4195 fails, we don't want to push a context and then
4196 pop it again right away, so we skip straight
4197 to the op that follows the leavewhen.
4199 if ((0 == (PL_op->op_flags & OPf_SPECIAL)) && !SvTRUEx(POPs))
4200 return cLOGOP->op_other->op_next;
4205 PUSHBLOCK(cx, CXt_WHEN, SP);
4214 register PERL_CONTEXT *cx;
4220 assert(CxTYPE(cx) == CXt_WHEN);
4225 PL_curpm = newpm; /* pop $1 et al */
4235 register PERL_CONTEXT *cx;
4238 cxix = dopoptowhen(cxstack_ix);
4240 DIE(aTHX_ "Can't \"continue\" outside a when block");
4241 if (cxix < cxstack_ix)
4244 /* clear off anything above the scope we're re-entering */
4245 inner = PL_scopestack_ix;
4247 if (PL_scopestack_ix < inner)
4248 leave_scope(PL_scopestack[PL_scopestack_ix]);
4249 PL_curcop = cx->blk_oldcop;
4250 return cx->blk_givwhen.leave_op;
4257 register PERL_CONTEXT *cx;
4260 cxix = dopoptogiven(cxstack_ix);
4262 if (PL_op->op_flags & OPf_SPECIAL)
4263 DIE(aTHX_ "Can't use when() outside a topicalizer");
4265 DIE(aTHX_ "Can't \"break\" outside a given block");
4267 if (CxFOREACH(&cxstack[cxix]) && (0 == (PL_op->op_flags & OPf_SPECIAL)))
4268 DIE(aTHX_ "Can't \"break\" in a loop topicalizer");
4270 if (cxix < cxstack_ix)
4273 /* clear off anything above the scope we're re-entering */
4274 inner = PL_scopestack_ix;
4276 if (PL_scopestack_ix < inner)
4277 leave_scope(PL_scopestack[PL_scopestack_ix]);
4278 PL_curcop = cx->blk_oldcop;
4281 return cx->blk_loop.next_op;
4283 return cx->blk_givwhen.leave_op;
4287 S_doparseform(pTHX_ SV *sv)
4290 register char *s = SvPV_force(sv, len);
4291 register char * const send = s + len;
4292 register char *base = NULL;
4293 register I32 skipspaces = 0;
4294 bool noblank = FALSE;
4295 bool repeat = FALSE;
4296 bool postspace = FALSE;
4302 bool unchopnum = FALSE;
4303 int maxops = 12; /* FF_LINEMARK + FF_END + 10 (\0 without preceding \n) */
4306 Perl_croak(aTHX_ "Null picture in formline");
4308 /* estimate the buffer size needed */
4309 for (base = s; s <= send; s++) {
4310 if (*s == '\n' || *s == '@' || *s == '^')
4316 Newx(fops, maxops, U32);
4321 *fpc++ = FF_LINEMARK;
4322 noblank = repeat = FALSE;
4340 case ' ': case '\t':
4347 } /* else FALL THROUGH */
4355 *fpc++ = FF_LITERAL;
4363 *fpc++ = (U16)skipspaces;
4367 *fpc++ = FF_NEWLINE;
4371 arg = fpc - linepc + 1;
4378 *fpc++ = FF_LINEMARK;
4379 noblank = repeat = FALSE;
4388 ischop = s[-1] == '^';
4394 arg = (s - base) - 1;
4396 *fpc++ = FF_LITERAL;
4404 *fpc++ = 2; /* skip the @* or ^* */
4406 *fpc++ = FF_LINESNGL;
4409 *fpc++ = FF_LINEGLOB;
4411 else if (*s == '#' || (*s == '.' && s[1] == '#')) {
4412 arg = ischop ? 512 : 0;
4417 const char * const f = ++s;
4420 arg |= 256 + (s - f);
4422 *fpc++ = s - base; /* fieldsize for FETCH */
4423 *fpc++ = FF_DECIMAL;
4425 unchopnum |= ! ischop;
4427 else if (*s == '0' && s[1] == '#') { /* Zero padded decimals */
4428 arg = ischop ? 512 : 0;
4430 s++; /* skip the '0' first */
4434 const char * const f = ++s;
4437 arg |= 256 + (s - f);
4439 *fpc++ = s - base; /* fieldsize for FETCH */
4440 *fpc++ = FF_0DECIMAL;
4442 unchopnum |= ! ischop;
4446 bool ismore = FALSE;
4449 while (*++s == '>') ;
4450 prespace = FF_SPACE;
4452 else if (*s == '|') {
4453 while (*++s == '|') ;
4454 prespace = FF_HALFSPACE;
4459 while (*++s == '<') ;
4462 if (*s == '.' && s[1] == '.' && s[2] == '.') {
4466 *fpc++ = s - base; /* fieldsize for FETCH */
4468 *fpc++ = ischop ? FF_CHECKCHOP : FF_CHECKNL;
4471 *fpc++ = (U16)prespace;
4485 assert (fpc <= fops + maxops); /* ensure our buffer estimate was valid */
4487 { /* need to jump to the next word */
4489 z = WORD_ALIGN - SvCUR(sv) % WORD_ALIGN;
4490 SvGROW(sv, SvCUR(sv) + z + arg * sizeof(U32) + 4);
4491 s = SvPVX(sv) + SvCUR(sv) + z;
4493 Copy(fops, s, arg, U32);
4495 sv_magic(sv, NULL, PERL_MAGIC_fm, NULL, 0);
4498 if (unchopnum && repeat)
4499 DIE(aTHX_ "Repeated format line will never terminate (~~ and @#)");
4505 S_num_overflow(NV value, I32 fldsize, I32 frcsize)
4507 /* Can value be printed in fldsize chars, using %*.*f ? */
4511 int intsize = fldsize - (value < 0 ? 1 : 0);
4518 while (intsize--) pwr *= 10.0;
4519 while (frcsize--) eps /= 10.0;
4522 if (value + eps >= pwr)
4525 if (value - eps <= -pwr)
4532 S_run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen)
4535 SV * const datasv = FILTER_DATA(idx);
4536 const int filter_has_file = IoLINES(datasv);
4537 GV * const filter_child_proc = (GV *)IoFMT_GV(datasv);
4538 SV * const filter_state = (SV *)IoTOP_GV(datasv);
4539 SV * const filter_sub = (SV *)IoBOTTOM_GV(datasv);
4542 /* I was having segfault trouble under Linux 2.2.5 after a
4543 parse error occured. (Had to hack around it with a test
4544 for PL_error_count == 0.) Solaris doesn't segfault --
4545 not sure where the trouble is yet. XXX */
4547 if (filter_has_file) {