3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 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.
21 #define PERL_IN_PP_CTL_C
25 #define WORD_ALIGN sizeof(U32)
28 #define DOCATCH(o) ((CATCH_GET == TRUE) ? docatch(o) : (o))
30 static I32 run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen);
38 cxix = dopoptosub(cxstack_ix);
42 switch (cxstack[cxix].blk_gimme) {
59 /* XXXX Should store the old value to allow for tie/overload - and
60 restore in regcomp, where marked with XXXX. */
69 register PMOP *pm = (PMOP*)cLOGOP->op_other;
73 MAGIC *mg = Null(MAGIC*);
77 /* prevent recompiling under /o and ithreads. */
78 #if defined(USE_ITHREADS)
79 if (pm->op_pmflags & PMf_KEEP && PM_GETRE(pm))
84 SV *sv = SvRV(tmpstr);
86 mg = mg_find(sv, PERL_MAGIC_qr);
89 regexp *re = (regexp *)mg->mg_obj;
90 ReREFCNT_dec(PM_GETRE(pm));
91 PM_SETRE(pm, ReREFCNT_inc(re));
94 t = SvPV(tmpstr, len);
96 /* Check against the last compiled regexp. */
97 if (!PM_GETRE(pm) || !PM_GETRE(pm)->precomp ||
98 PM_GETRE(pm)->prelen != (I32)len ||
99 memNE(PM_GETRE(pm)->precomp, t, len))
102 ReREFCNT_dec(PM_GETRE(pm));
103 PM_SETRE(pm, Null(REGEXP*)); /* crucial if regcomp aborts */
105 if (PL_op->op_flags & OPf_SPECIAL)
106 PL_reginterp_cnt = I32_MAX; /* Mark as safe. */
108 pm->op_pmflags = pm->op_pmpermflags; /* reset case sensitivity */
110 pm->op_pmdynflags |= PMdf_DYN_UTF8;
112 pm->op_pmdynflags &= ~PMdf_DYN_UTF8;
113 if (pm->op_pmdynflags & PMdf_UTF8)
114 t = (char*)bytes_to_utf8((U8*)t, &len);
116 PM_SETRE(pm, CALLREGCOMP(aTHX_ t, t + len, pm));
117 if (!DO_UTF8(tmpstr) && (pm->op_pmdynflags & PMdf_UTF8))
119 PL_reginterp_cnt = 0; /* XXXX Be extra paranoid - needed
120 inside tie/overload accessors. */
124 #ifndef INCOMPLETE_TAINTS
127 pm->op_pmdynflags |= PMdf_TAINTED;
129 pm->op_pmdynflags &= ~PMdf_TAINTED;
133 if (!PM_GETRE(pm)->prelen && PL_curpm)
135 else if (strEQ("\\s+", PM_GETRE(pm)->precomp))
136 pm->op_pmflags |= PMf_WHITE;
138 pm->op_pmflags &= ~PMf_WHITE;
140 /* XXX runtime compiled output needs to move to the pad */
141 if (pm->op_pmflags & PMf_KEEP) {
142 pm->op_private &= ~OPpRUNTIME; /* no point compiling again */
143 #if !defined(USE_ITHREADS)
144 /* XXX can't change the optree at runtime either */
145 cLOGOP->op_first->op_next = PL_op->op_next;
154 register PMOP *pm = (PMOP*) cLOGOP->op_other;
155 register PERL_CONTEXT *cx = &cxstack[cxstack_ix];
156 register SV *dstr = cx->sb_dstr;
157 register char *s = cx->sb_s;
158 register char *m = cx->sb_m;
159 char *orig = cx->sb_orig;
160 register REGEXP *rx = cx->sb_rx;
162 REGEXP *old = PM_GETRE(pm);
169 rxres_restore(&cx->sb_rxres, rx);
170 RX_MATCH_UTF8_set(rx, SvUTF8(cx->sb_targ));
172 if (cx->sb_iters++) {
173 I32 saviters = cx->sb_iters;
174 if (cx->sb_iters > cx->sb_maxiters)
175 DIE(aTHX_ "Substitution loop");
177 if (!(cx->sb_rxtainted & 2) && SvTAINTED(TOPs))
178 cx->sb_rxtainted |= 2;
179 sv_catsv(dstr, POPs);
182 if (cx->sb_once || !CALLREGEXEC(aTHX_ rx, s, cx->sb_strend, orig,
183 s == m, cx->sb_targ, NULL,
184 ((cx->sb_rflags & REXEC_COPY_STR)
185 ? (REXEC_IGNOREPOS|REXEC_NOT_FIRST)
186 : (REXEC_COPY_STR|REXEC_IGNOREPOS|REXEC_NOT_FIRST))))
188 SV *targ = cx->sb_targ;
190 if (DO_UTF8(dstr) && !SvUTF8(targ))
191 sv_catpvn_utf8_upgrade(dstr, s, cx->sb_strend - s, nsv);
193 sv_catpvn(dstr, s, cx->sb_strend - s);
194 cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
196 #ifdef PERL_COPY_ON_WRITE
198 sv_force_normal_flags(targ, SV_COW_DROP_PV);
202 (void)SvOOK_off(targ);
204 Safefree(SvPVX(targ));
206 SvPVX(targ) = SvPVX(dstr);
207 SvCUR_set(targ, SvCUR(dstr));
208 SvLEN_set(targ, SvLEN(dstr));
214 TAINT_IF(cx->sb_rxtainted & 1);
215 PUSHs(sv_2mortal(newSViv(saviters - 1)));
217 (void)SvPOK_only_UTF8(targ);
218 TAINT_IF(cx->sb_rxtainted);
222 LEAVE_SCOPE(cx->sb_oldsave);
225 RETURNOP(pm->op_next);
227 cx->sb_iters = saviters;
229 if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) {
232 cx->sb_orig = orig = rx->subbeg;
234 cx->sb_strend = s + (cx->sb_strend - m);
236 cx->sb_m = m = rx->startp[0] + orig;
238 if (DO_UTF8(dstr) && !SvUTF8(cx->sb_targ))
239 sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv);
241 sv_catpvn(dstr, s, m-s);
243 cx->sb_s = rx->endp[0] + orig;
244 { /* Update the pos() information. */
245 SV *sv = cx->sb_targ;
248 if (SvTYPE(sv) < SVt_PVMG)
249 (void)SvUPGRADE(sv, SVt_PVMG);
250 if (!(mg = mg_find(sv, PERL_MAGIC_regex_global))) {
251 sv_magic(sv, Nullsv, PERL_MAGIC_regex_global, Nullch, 0);
252 mg = mg_find(sv, PERL_MAGIC_regex_global);
261 cx->sb_rxtainted |= RX_MATCH_TAINTED(rx);
262 rxres_save(&cx->sb_rxres, rx);
263 RETURNOP(pm->op_pmreplstart);
267 Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx)
272 if (!p || p[1] < rx->nparens) {
273 #ifdef PERL_COPY_ON_WRITE
274 i = 7 + rx->nparens * 2;
276 i = 6 + rx->nparens * 2;
285 *p++ = PTR2UV(RX_MATCH_COPIED(rx) ? rx->subbeg : Nullch);
286 RX_MATCH_COPIED_off(rx);
288 #ifdef PERL_COPY_ON_WRITE
289 *p++ = PTR2UV(rx->saved_copy);
290 rx->saved_copy = Nullsv;
295 *p++ = PTR2UV(rx->subbeg);
296 *p++ = (UV)rx->sublen;
297 for (i = 0; i <= rx->nparens; ++i) {
298 *p++ = (UV)rx->startp[i];
299 *p++ = (UV)rx->endp[i];
304 Perl_rxres_restore(pTHX_ void **rsp, REGEXP *rx)
309 RX_MATCH_COPY_FREE(rx);
310 RX_MATCH_COPIED_set(rx, *p);
313 #ifdef PERL_COPY_ON_WRITE
315 SvREFCNT_dec (rx->saved_copy);
316 rx->saved_copy = INT2PTR(SV*,*p);
322 rx->subbeg = INT2PTR(char*,*p++);
323 rx->sublen = (I32)(*p++);
324 for (i = 0; i <= rx->nparens; ++i) {
325 rx->startp[i] = (I32)(*p++);
326 rx->endp[i] = (I32)(*p++);
331 Perl_rxres_free(pTHX_ void **rsp)
336 Safefree(INT2PTR(char*,*p));
337 #ifdef PERL_COPY_ON_WRITE
339 SvREFCNT_dec (INT2PTR(SV*,p[1]));
349 dSP; dMARK; dORIGMARK;
350 register SV *tmpForm = *++MARK;
357 register SV *sv = Nullsv;
362 bool chopspace = (strchr(PL_chopset, ' ') != Nullch);
363 char *chophere = Nullch;
364 char *linemark = Nullch;
366 bool gotsome = FALSE;
368 STRLEN fudge = SvCUR(tmpForm) * (IN_BYTES ? 1 : 3) + 1;
369 bool item_is_utf8 = FALSE;
370 bool targ_is_utf8 = FALSE;
376 if (!SvMAGICAL(tmpForm) || !SvCOMPILED(tmpForm)) {
377 if (SvREADONLY(tmpForm)) {
378 SvREADONLY_off(tmpForm);
379 parseres = doparseform(tmpForm);
380 SvREADONLY_on(tmpForm);
383 parseres = doparseform(tmpForm);
387 SvPV_force(PL_formtarget, len);
388 if (DO_UTF8(PL_formtarget))
390 t = SvGROW(PL_formtarget, len + fudge + 1); /* XXX SvCUR bad */
392 f = SvPV(tmpForm, len);
393 /* need to jump to the next word */
394 s = f + len + WORD_ALIGN - SvCUR(tmpForm) % WORD_ALIGN;
403 case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break;
404 case FF_BLANK: arg = fpc[1]; name = "BLANK"; break;
405 case FF_SKIP: arg = fpc[1]; name = "SKIP"; break;
406 case FF_FETCH: arg = fpc[1]; name = "FETCH"; break;
407 case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break;
409 case FF_CHECKNL: name = "CHECKNL"; break;
410 case FF_CHECKCHOP: name = "CHECKCHOP"; break;
411 case FF_SPACE: name = "SPACE"; break;
412 case FF_HALFSPACE: name = "HALFSPACE"; break;
413 case FF_ITEM: name = "ITEM"; break;
414 case FF_CHOP: name = "CHOP"; break;
415 case FF_LINEGLOB: name = "LINEGLOB"; break;
416 case FF_NEWLINE: name = "NEWLINE"; break;
417 case FF_MORE: name = "MORE"; break;
418 case FF_LINEMARK: name = "LINEMARK"; break;
419 case FF_END: name = "END"; break;
420 case FF_0DECIMAL: name = "0DECIMAL"; break;
421 case FF_LINESNGL: name = "LINESNGL"; break;
424 PerlIO_printf(Perl_debug_log, "%-16s%ld\n", name, (long) arg);
426 PerlIO_printf(Perl_debug_log, "%-16s\n", name);
437 if (targ_is_utf8 && !SvUTF8(tmpForm)) {
438 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
440 sv_catpvn_utf8_upgrade(PL_formtarget, f, arg, nsv);
441 t = SvEND(PL_formtarget);
444 if (!targ_is_utf8 && DO_UTF8(tmpForm)) {
445 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
447 sv_utf8_upgrade(PL_formtarget);
448 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
449 t = SvEND(PL_formtarget);
469 if (ckWARN(WARN_SYNTAX))
470 Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Not enough format arguments");
475 item = s = SvPV(sv, len);
478 itemsize = sv_len_utf8(sv);
479 if (itemsize != (I32)len) {
481 if (itemsize > fieldsize) {
482 itemsize = fieldsize;
483 itembytes = itemsize;
484 sv_pos_u2b(sv, &itembytes, 0);
488 send = chophere = s + itembytes;
498 sv_pos_b2u(sv, &itemsize);
502 item_is_utf8 = FALSE;
503 if (itemsize > fieldsize)
504 itemsize = fieldsize;
505 send = chophere = s + itemsize;
517 item = s = SvPV(sv, len);
520 itemsize = sv_len_utf8(sv);
521 if (itemsize != (I32)len) {
523 if (itemsize <= fieldsize) {
524 send = chophere = s + itemsize;
536 itemsize = fieldsize;
537 itembytes = itemsize;
538 sv_pos_u2b(sv, &itembytes, 0);
539 send = chophere = s + itembytes;
540 while (s < send || (s == send && isSPACE(*s))) {
550 if (strchr(PL_chopset, *s))
555 itemsize = chophere - item;
556 sv_pos_b2u(sv, &itemsize);
562 item_is_utf8 = FALSE;
563 if (itemsize <= fieldsize) {
564 send = chophere = s + itemsize;
576 itemsize = fieldsize;
577 send = chophere = s + itemsize;
578 while (s < send || (s == send && isSPACE(*s))) {
588 if (strchr(PL_chopset, *s))
593 itemsize = chophere - item;
598 arg = fieldsize - itemsize;
607 arg = fieldsize - itemsize;
621 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
623 sv_utf8_upgrade(PL_formtarget);
624 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
625 t = SvEND(PL_formtarget);
629 if (UTF8_IS_CONTINUED(*s)) {
630 STRLEN skip = UTF8SKIP(s);
647 if ( !((*t++ = *s++) & ~31) )
653 if (targ_is_utf8 && !item_is_utf8) {
654 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
656 sv_catpvn_utf8_upgrade(PL_formtarget, s, arg, nsv);
657 for (; t < SvEND(PL_formtarget); t++) {
670 int ch = *t++ = *s++;
673 if ( !((*t++ = *s++) & ~31) )
682 while (*s && isSPACE(*s))
696 item = s = SvPV(sv, len);
698 if ((item_is_utf8 = DO_UTF8(sv)))
699 itemsize = sv_len_utf8(sv);
701 bool chopped = FALSE;
704 chophere = s + itemsize;
720 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
722 SvUTF8_on(PL_formtarget);
724 SvCUR_set(sv, chophere - item);
725 sv_catsv(PL_formtarget, sv);
726 SvCUR_set(sv, itemsize);
728 sv_catsv(PL_formtarget, sv);
730 SvCUR_set(PL_formtarget, SvCUR(PL_formtarget) - 1);
731 SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1);
732 t = SvPVX(PL_formtarget) + SvCUR(PL_formtarget);
740 #if defined(USE_LONG_DOUBLE)
741 fmt = (arg & 256) ? "%#0*.*" PERL_PRIfldbl : "%0*.*" PERL_PRIfldbl;
743 fmt = (arg & 256) ? "%#0*.*f" : "%0*.*f";
748 #if defined(USE_LONG_DOUBLE)
749 fmt = (arg & 256) ? "%#*.*" PERL_PRIfldbl : "%*.*" PERL_PRIfldbl;
751 fmt = (arg & 256) ? "%#*.*f" : "%*.*f";
754 /* If the field is marked with ^ and the value is undefined,
756 if ((arg & 512) && !SvOK(sv)) {
764 /* overflow evidence */
765 if (num_overflow(value, fieldsize, arg)) {
771 /* Formats aren't yet marked for locales, so assume "yes". */
773 STORE_NUMERIC_STANDARD_SET_LOCAL();
774 sprintf(t, fmt, (int) fieldsize, (int) arg & 255, value);
775 RESTORE_NUMERIC_STANDARD();
782 while (t-- > linemark && *t == ' ') ;
790 if (arg) { /* repeat until fields exhausted? */
792 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
793 lines += FmLINES(PL_formtarget);
796 if (strnEQ(linemark, linemark - arg, arg))
797 DIE(aTHX_ "Runaway format");
800 SvUTF8_on(PL_formtarget);
801 FmLINES(PL_formtarget) = lines;
803 RETURNOP(cLISTOP->op_first);
816 while (*s && isSPACE(*s) && s < send)
820 arg = fieldsize - itemsize;
827 if (strnEQ(s," ",3)) {
828 while (s > SvPVX(PL_formtarget) && isSPACE(s[-1]))
839 SvCUR_set(PL_formtarget, t - SvPVX(PL_formtarget));
841 SvUTF8_on(PL_formtarget);
842 FmLINES(PL_formtarget) += lines;
854 if (PL_stack_base + *PL_markstack_ptr == SP) {
856 if (GIMME_V == G_SCALAR)
857 XPUSHs(sv_2mortal(newSViv(0)));
858 RETURNOP(PL_op->op_next->op_next);
860 PL_stack_sp = PL_stack_base + *PL_markstack_ptr + 1;
861 pp_pushmark(); /* push dst */
862 pp_pushmark(); /* push src */
863 ENTER; /* enter outer scope */
866 if (PL_op->op_private & OPpGREP_LEX)
867 SAVESPTR(PAD_SVl(PL_op->op_targ));
870 ENTER; /* enter inner scope */
873 src = PL_stack_base[*PL_markstack_ptr];
875 if (PL_op->op_private & OPpGREP_LEX)
876 PAD_SVl(PL_op->op_targ) = src;
881 if (PL_op->op_type == OP_MAPSTART)
882 pp_pushmark(); /* push top */
883 return ((LOGOP*)PL_op->op_next)->op_other;
888 DIE(aTHX_ "panic: mapstart"); /* uses grepstart */
895 I32 items = (SP - PL_stack_base) - *PL_markstack_ptr; /* how many new items */
901 /* first, move source pointer to the next item in the source list */
902 ++PL_markstack_ptr[-1];
904 /* if there are new items, push them into the destination list */
905 if (items && gimme != G_VOID) {
906 /* might need to make room back there first */
907 if (items > PL_markstack_ptr[-1] - PL_markstack_ptr[-2]) {
908 /* XXX this implementation is very pessimal because the stack
909 * is repeatedly extended for every set of items. Is possible
910 * to do this without any stack extension or copying at all
911 * by maintaining a separate list over which the map iterates
912 * (like foreach does). --gsar */
914 /* everything in the stack after the destination list moves
915 * towards the end the stack by the amount of room needed */
916 shift = items - (PL_markstack_ptr[-1] - PL_markstack_ptr[-2]);
918 /* items to shift up (accounting for the moved source pointer) */
919 count = (SP - PL_stack_base) - (PL_markstack_ptr[-1] - 1);
921 /* This optimization is by Ben Tilly and it does
922 * things differently from what Sarathy (gsar)
923 * is describing. The downside of this optimization is
924 * that leaves "holes" (uninitialized and hopefully unused areas)
925 * to the Perl stack, but on the other hand this
926 * shouldn't be a problem. If Sarathy's idea gets
927 * implemented, this optimization should become
928 * irrelevant. --jhi */
930 shift = count; /* Avoid shifting too often --Ben Tilly */
935 PL_markstack_ptr[-1] += shift;
936 *PL_markstack_ptr += shift;
940 /* copy the new items down to the destination list */
941 dst = PL_stack_base + (PL_markstack_ptr[-2] += items) - 1;
942 if (gimme == G_ARRAY) {
944 *dst-- = SvTEMP(TOPs) ? POPs : sv_mortalcopy(POPs);
947 /* scalar context: we don't care about which values map returns
948 * (we use undef here). And so we certainly don't want to do mortal
949 * copies of meaningless values. */
950 while (items-- > 0) {
952 *dst-- = &PL_sv_undef;
956 LEAVE; /* exit inner scope */
959 if (PL_markstack_ptr[-1] > *PL_markstack_ptr) {
961 (void)POPMARK; /* pop top */
962 LEAVE; /* exit outer scope */
963 (void)POPMARK; /* pop src */
964 items = --*PL_markstack_ptr - PL_markstack_ptr[-1];
965 (void)POPMARK; /* pop dst */
966 SP = PL_stack_base + POPMARK; /* pop original mark */
967 if (gimme == G_SCALAR) {
968 if (PL_op->op_private & OPpGREP_LEX) {
969 SV* sv = sv_newmortal();
978 else if (gimme == G_ARRAY)
985 ENTER; /* enter inner scope */
988 /* set $_ to the new source item */
989 src = PL_stack_base[PL_markstack_ptr[-1]];
991 if (PL_op->op_private & OPpGREP_LEX)
992 PAD_SVl(PL_op->op_targ) = src;
996 RETURNOP(cLOGOP->op_other);
1004 if (GIMME == G_ARRAY)
1006 if (SvTRUEx(PAD_SV(PL_op->op_targ)))
1007 return cLOGOP->op_other;
1016 if (GIMME == G_ARRAY) {
1017 RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
1021 SV *targ = PAD_SV(PL_op->op_targ);
1024 if (PL_op->op_private & OPpFLIP_LINENUM) {
1025 if (GvIO(PL_last_in_gv)) {
1026 flip = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
1029 GV *gv = gv_fetchpv(".", TRUE, SVt_PV);
1030 if (gv && GvSV(gv)) flip = SvIV(sv) == SvIV(GvSV(gv));
1036 sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1);
1037 if (PL_op->op_flags & OPf_SPECIAL) {
1045 RETURNOP(((LOGOP*)cUNOP->op_first)->op_other);
1054 /* This code tries to decide if "$left .. $right" should use the
1055 magical string increment, or if the range is numeric (we make
1056 an exception for .."0" [#18165]). AMS 20021031. */
1058 #define RANGE_IS_NUMERIC(left,right) ( \
1059 SvNIOKp(left) || (SvOK(left) && !SvPOKp(left)) || \
1060 SvNIOKp(right) || (SvOK(right) && !SvPOKp(right)) || \
1061 (looks_like_number(left) && SvPOKp(left) && *SvPVX(left) != '0' && \
1062 looks_like_number(right)))
1068 if (GIMME == G_ARRAY) {
1074 if (SvGMAGICAL(left))
1076 if (SvGMAGICAL(right))
1079 if (RANGE_IS_NUMERIC(left,right)) {
1080 if (SvNV(left) < IV_MIN || SvNV(right) > IV_MAX)
1081 DIE(aTHX_ "Range iterator outside integer range");
1092 sv = sv_2mortal(newSViv(i++));
1097 SV *final = sv_mortalcopy(right);
1099 char *tmps = SvPV(final, len);
1101 sv = sv_mortalcopy(left);
1103 while (!SvNIOKp(sv) && SvCUR(sv) <= len) {
1105 if (strEQ(SvPVX(sv),tmps))
1107 sv = sv_2mortal(newSVsv(sv));
1114 SV *targ = PAD_SV(cUNOP->op_first->op_targ);
1118 if (PL_op->op_private & OPpFLIP_LINENUM) {
1119 if (GvIO(PL_last_in_gv)) {
1120 flop = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv));
1123 GV *gv = gv_fetchpv(".", TRUE, SVt_PV);
1124 if (gv && GvSV(gv)) flop = SvIV(sv) == SvIV(GvSV(gv));
1132 sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0);
1133 sv_catpv(targ, "E0");
1143 static char *context_name[] = {
1154 S_dopoptolabel(pTHX_ char *label)
1157 register PERL_CONTEXT *cx;
1159 for (i = cxstack_ix; i >= 0; i--) {
1161 switch (CxTYPE(cx)) {
1167 if (ckWARN(WARN_EXITING))
1168 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s",
1169 context_name[CxTYPE(cx)], OP_NAME(PL_op));
1170 if (CxTYPE(cx) == CXt_NULL)
1174 if (!cx->blk_loop.label ||
1175 strNE(label, cx->blk_loop.label) ) {
1176 DEBUG_l(Perl_deb(aTHX_ "(Skipping label #%ld %s)\n",
1177 (long)i, cx->blk_loop.label));
1180 DEBUG_l( Perl_deb(aTHX_ "(Found label #%ld %s)\n", (long)i, label));
1188 Perl_dowantarray(pTHX)
1190 I32 gimme = block_gimme();
1191 return (gimme == G_VOID) ? G_SCALAR : gimme;
1195 Perl_block_gimme(pTHX)
1199 cxix = dopoptosub(cxstack_ix);
1203 switch (cxstack[cxix].blk_gimme) {
1211 Perl_croak(aTHX_ "panic: bad gimme: %d\n", cxstack[cxix].blk_gimme);
1218 Perl_is_lvalue_sub(pTHX)
1222 cxix = dopoptosub(cxstack_ix);
1223 assert(cxix >= 0); /* We should only be called from inside subs */
1225 if (cxstack[cxix].blk_sub.lval && CvLVALUE(cxstack[cxix].blk_sub.cv))
1226 return cxstack[cxix].blk_sub.lval;
1232 S_dopoptosub(pTHX_ I32 startingblock)
1234 return dopoptosub_at(cxstack, startingblock);
1238 S_dopoptosub_at(pTHX_ PERL_CONTEXT *cxstk, I32 startingblock)
1241 register PERL_CONTEXT *cx;
1242 for (i = startingblock; i >= 0; i--) {
1244 switch (CxTYPE(cx)) {
1250 DEBUG_l( Perl_deb(aTHX_ "(Found sub #%ld)\n", (long)i));
1258 S_dopoptoeval(pTHX_ I32 startingblock)
1261 register PERL_CONTEXT *cx;
1262 for (i = startingblock; i >= 0; i--) {
1264 switch (CxTYPE(cx)) {
1268 DEBUG_l( Perl_deb(aTHX_ "(Found eval #%ld)\n", (long)i));
1276 S_dopoptoloop(pTHX_ I32 startingblock)
1279 register PERL_CONTEXT *cx;
1280 for (i = startingblock; i >= 0; i--) {
1282 switch (CxTYPE(cx)) {
1288 if (ckWARN(WARN_EXITING))
1289 Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s",
1290 context_name[CxTYPE(cx)], OP_NAME(PL_op));
1291 if ((CxTYPE(cx)) == CXt_NULL)
1295 DEBUG_l( Perl_deb(aTHX_ "(Found loop #%ld)\n", (long)i));
1303 Perl_dounwind(pTHX_ I32 cxix)
1305 register PERL_CONTEXT *cx;
1308 while (cxstack_ix > cxix) {
1310 cx = &cxstack[cxstack_ix];
1311 DEBUG_l(PerlIO_printf(Perl_debug_log, "Unwinding block %ld, type %s\n",
1312 (long) cxstack_ix, PL_block_type[CxTYPE(cx)]));
1313 /* Note: we don't need to restore the base context info till the end. */
1314 switch (CxTYPE(cx)) {
1317 continue; /* not break */
1339 Perl_qerror(pTHX_ SV *err)
1342 sv_catsv(ERRSV, err);
1344 sv_catsv(PL_errors, err);
1346 Perl_warn(aTHX_ "%"SVf, err);
1351 Perl_die_where(pTHX_ char *message, STRLEN msglen)
1357 register PERL_CONTEXT *cx;
1362 if (PL_in_eval & EVAL_KEEPERR) {
1363 static char prefix[] = "\t(in cleanup) ";
1368 else if (SvCUR(err) >= sizeof(prefix)+msglen-1) {
1371 if (*e != *message || strNE(e,message))
1375 SvGROW(err, SvCUR(err)+sizeof(prefix)+msglen);
1376 sv_catpvn(err, prefix, sizeof(prefix)-1);
1377 sv_catpvn(err, message, msglen);
1378 if (ckWARN(WARN_MISC)) {
1379 STRLEN start = SvCUR(err)-msglen-sizeof(prefix)+1;
1380 Perl_warner(aTHX_ packWARN(WARN_MISC), SvPVX(err)+start);
1385 sv_setpvn(ERRSV, message, msglen);
1389 while ((cxix = dopoptoeval(cxstack_ix)) < 0
1390 && PL_curstackinfo->si_prev)
1399 if (cxix < cxstack_ix)
1402 POPBLOCK(cx,PL_curpm);
1403 if (CxTYPE(cx) != CXt_EVAL) {
1405 message = SvPVx(ERRSV, msglen);
1406 PerlIO_write(Perl_error_log, "panic: die ", 11);
1407 PerlIO_write(Perl_error_log, message, msglen);
1412 if (gimme == G_SCALAR)
1413 *++newsp = &PL_sv_undef;
1414 PL_stack_sp = newsp;
1418 /* LEAVE could clobber PL_curcop (see save_re_context())
1419 * XXX it might be better to find a way to avoid messing with
1420 * PL_curcop in save_re_context() instead, but this is a more
1421 * minimal fix --GSAR */
1422 PL_curcop = cx->blk_oldcop;
1424 if (optype == OP_REQUIRE) {
1425 char* msg = SvPVx(ERRSV, n_a);
1426 SV *nsv = cx->blk_eval.old_namesv;
1427 (void)hv_store(GvHVn(PL_incgv), SvPVX(nsv), SvCUR(nsv),
1429 DIE(aTHX_ "%sCompilation failed in require",
1430 *msg ? msg : "Unknown error\n");
1432 return pop_return();
1436 message = SvPVx(ERRSV, msglen);
1438 write_to_stderr(message, msglen);
1447 if (SvTRUE(left) != SvTRUE(right))
1459 RETURNOP(cLOGOP->op_other);
1468 RETURNOP(cLOGOP->op_other);
1477 if (!sv || !SvANY(sv)) {
1478 RETURNOP(cLOGOP->op_other);
1481 switch (SvTYPE(sv)) {
1483 if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied)))
1487 if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied)))
1491 if (CvROOT(sv) || CvXSUB(sv))
1501 RETURNOP(cLOGOP->op_other);
1507 register I32 cxix = dopoptosub(cxstack_ix);
1508 register PERL_CONTEXT *cx;
1509 register PERL_CONTEXT *ccstack = cxstack;
1510 PERL_SI *top_si = PL_curstackinfo;
1521 /* we may be in a higher stacklevel, so dig down deeper */
1522 while (cxix < 0 && top_si->si_type != PERLSI_MAIN) {
1523 top_si = top_si->si_prev;
1524 ccstack = top_si->si_cxstack;
1525 cxix = dopoptosub_at(ccstack, top_si->si_cxix);
1528 if (GIMME != G_ARRAY) {
1534 if (PL_DBsub && cxix >= 0 &&
1535 ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub))
1539 cxix = dopoptosub_at(ccstack, cxix - 1);
1542 cx = &ccstack[cxix];
1543 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
1544 dbcxix = dopoptosub_at(ccstack, cxix - 1);
1545 /* We expect that ccstack[dbcxix] is CXt_SUB, anyway, the
1546 field below is defined for any cx. */
1547 if (PL_DBsub && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub))
1548 cx = &ccstack[dbcxix];
1551 stashname = CopSTASHPV(cx->blk_oldcop);
1552 if (GIMME != G_ARRAY) {
1555 PUSHs(&PL_sv_undef);
1558 sv_setpv(TARG, stashname);
1567 PUSHs(&PL_sv_undef);
1569 PUSHs(sv_2mortal(newSVpv(stashname, 0)));
1570 PUSHs(sv_2mortal(newSVpv(OutCopFILE(cx->blk_oldcop), 0)));
1571 PUSHs(sv_2mortal(newSViv((I32)CopLINE(cx->blk_oldcop))));
1574 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
1575 GV *cvgv = CvGV(ccstack[cxix].blk_sub.cv);
1576 /* So is ccstack[dbcxix]. */
1579 gv_efullname3(sv, cvgv, Nullch);
1580 PUSHs(sv_2mortal(sv));
1581 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1584 PUSHs(sv_2mortal(newSVpvn("(unknown)",9)));
1585 PUSHs(sv_2mortal(newSViv((I32)cx->blk_sub.hasargs)));
1589 PUSHs(sv_2mortal(newSVpvn("(eval)",6)));
1590 PUSHs(sv_2mortal(newSViv(0)));
1592 gimme = (I32)cx->blk_gimme;
1593 if (gimme == G_VOID)
1594 PUSHs(&PL_sv_undef);
1596 PUSHs(sv_2mortal(newSViv(gimme & G_ARRAY)));
1597 if (CxTYPE(cx) == CXt_EVAL) {
1599 if (cx->blk_eval.old_op_type == OP_ENTEREVAL) {
1600 PUSHs(cx->blk_eval.cur_text);
1604 else if (cx->blk_eval.old_namesv) {
1605 PUSHs(sv_2mortal(newSVsv(cx->blk_eval.old_namesv)));
1608 /* eval BLOCK (try blocks have old_namesv == 0) */
1610 PUSHs(&PL_sv_undef);
1611 PUSHs(&PL_sv_undef);
1615 PUSHs(&PL_sv_undef);
1616 PUSHs(&PL_sv_undef);
1618 if (CxTYPE(cx) == CXt_SUB && cx->blk_sub.hasargs
1619 && CopSTASH_eq(PL_curcop, PL_debstash))
1621 AV *ary = cx->blk_sub.argarray;
1622 int off = AvARRAY(ary) - AvALLOC(ary);
1626 PL_dbargs = GvAV(gv_AVadd(tmpgv = gv_fetchpv("DB::args", TRUE,
1629 AvREAL_off(PL_dbargs); /* XXX should be REIFY (see av.h) */
1632 if (AvMAX(PL_dbargs) < AvFILLp(ary) + off)
1633 av_extend(PL_dbargs, AvFILLp(ary) + off);
1634 Copy(AvALLOC(ary), AvARRAY(PL_dbargs), AvFILLp(ary) + 1 + off, SV*);
1635 AvFILLp(PL_dbargs) = AvFILLp(ary) + off;
1637 /* XXX only hints propagated via op_private are currently
1638 * visible (others are not easily accessible, since they
1639 * use the global PL_hints) */
1640 PUSHs(sv_2mortal(newSViv((I32)cx->blk_oldcop->op_private &
1641 HINT_PRIVATE_MASK)));
1644 SV * old_warnings = cx->blk_oldcop->cop_warnings ;
1646 if (old_warnings == pWARN_NONE ||
1647 (old_warnings == pWARN_STD && (PL_dowarn & G_WARN_ON) == 0))
1648 mask = newSVpvn(WARN_NONEstring, WARNsize) ;
1649 else if (old_warnings == pWARN_ALL ||
1650 (old_warnings == pWARN_STD && PL_dowarn & G_WARN_ON)) {
1651 /* Get the bit mask for $warnings::Bits{all}, because
1652 * it could have been extended by warnings::register */
1654 HV *bits = get_hv("warnings::Bits", FALSE);
1655 if (bits && (bits_all=hv_fetch(bits, "all", 3, FALSE))) {
1656 mask = newSVsv(*bits_all);
1659 mask = newSVpvn(WARN_ALLstring, WARNsize) ;
1663 mask = newSVsv(old_warnings);
1664 PUSHs(sv_2mortal(mask));
1679 sv_reset(tmps, CopSTASH(PL_curcop));
1689 /* like pp_nextstate, but used instead when the debugger is active */
1693 PL_curcop = (COP*)PL_op;
1694 TAINT_NOT; /* Each statement is presumed innocent */
1695 PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;
1698 if (PL_op->op_flags & OPf_SPECIAL /* breakpoint */
1699 || SvIV(PL_DBsingle) || SvIV(PL_DBsignal) || SvIV(PL_DBtrace))
1703 register PERL_CONTEXT *cx;
1704 I32 gimme = G_ARRAY;
1711 DIE(aTHX_ "No DB::DB routine defined");
1713 if (CvDEPTH(cv) >= 1 && !(PL_debug & DEBUG_DB_RECURSE_FLAG))
1714 /* don't do recursive DB::DB call */
1726 push_return(PL_op->op_next);
1727 PUSHBLOCK(cx, CXt_SUB, SP);
1730 PAD_SET_CUR(CvPADLIST(cv),1);
1731 RETURNOP(CvSTART(cv));
1745 register PERL_CONTEXT *cx;
1746 I32 gimme = GIMME_V;
1748 U32 cxtype = CXt_LOOP;
1756 if (PL_op->op_targ) {
1757 if (PL_op->op_private & OPpLVAL_INTRO) { /* for my $x (...) */
1758 SvPADSTALE_off(PAD_SVl(PL_op->op_targ));
1759 SAVESETSVFLAGS(PAD_SVl(PL_op->op_targ),
1760 SVs_PADSTALE, SVs_PADSTALE);
1762 #ifndef USE_ITHREADS
1763 svp = &PAD_SVl(PL_op->op_targ); /* "my" variable */
1766 SAVEPADSV(PL_op->op_targ);
1767 iterdata = INT2PTR(void*, PL_op->op_targ);
1768 cxtype |= CXp_PADVAR;
1773 svp = &GvSV(gv); /* symbol table variable */
1774 SAVEGENERICSV(*svp);
1777 iterdata = (void*)gv;
1783 PUSHBLOCK(cx, cxtype, SP);
1785 PUSHLOOP(cx, iterdata, MARK);
1787 PUSHLOOP(cx, svp, MARK);
1789 if (PL_op->op_flags & OPf_STACKED) {
1790 cx->blk_loop.iterary = (AV*)SvREFCNT_inc(POPs);
1791 if (SvTYPE(cx->blk_loop.iterary) != SVt_PVAV) {
1793 if (RANGE_IS_NUMERIC(sv,(SV*)cx->blk_loop.iterary)) {
1794 if (SvNV(sv) < IV_MIN ||
1795 SvNV((SV*)cx->blk_loop.iterary) >= IV_MAX)
1796 DIE(aTHX_ "Range iterator outside integer range");
1797 cx->blk_loop.iterix = SvIV(sv);
1798 cx->blk_loop.itermax = SvIV((SV*)cx->blk_loop.iterary);
1801 cx->blk_loop.iterlval = newSVsv(sv);
1805 cx->blk_loop.iterary = PL_curstack;
1806 AvFILLp(PL_curstack) = SP - PL_stack_base;
1807 cx->blk_loop.iterix = MARK - PL_stack_base;
1816 register PERL_CONTEXT *cx;
1817 I32 gimme = GIMME_V;
1823 PUSHBLOCK(cx, CXt_LOOP, SP);
1824 PUSHLOOP(cx, 0, SP);
1832 register PERL_CONTEXT *cx;
1840 newsp = PL_stack_base + cx->blk_loop.resetsp;
1843 if (gimme == G_VOID)
1845 else if (gimme == G_SCALAR) {
1847 *++newsp = sv_mortalcopy(*SP);
1849 *++newsp = &PL_sv_undef;
1853 *++newsp = sv_mortalcopy(*++mark);
1854 TAINT_NOT; /* Each item is independent */
1860 POPLOOP(cx); /* Stack values are safe: release loop vars ... */
1861 PL_curpm = newpm; /* ... and pop $1 et al */
1873 register PERL_CONTEXT *cx;
1874 bool popsub2 = FALSE;
1875 bool clear_errsv = FALSE;
1882 if (PL_curstackinfo->si_type == PERLSI_SORT) {
1883 if (cxstack_ix == PL_sortcxix
1884 || dopoptosub(cxstack_ix) <= PL_sortcxix)
1886 if (cxstack_ix > PL_sortcxix)
1887 dounwind(PL_sortcxix);
1888 AvARRAY(PL_curstack)[1] = *SP;
1889 PL_stack_sp = PL_stack_base + 1;
1894 cxix = dopoptosub(cxstack_ix);
1896 DIE(aTHX_ "Can't return outside a subroutine");
1897 if (cxix < cxstack_ix)
1901 switch (CxTYPE(cx)) {
1904 cxstack_ix++; /* preserve cx entry on stack for use by POPSUB */
1907 if (!(PL_in_eval & EVAL_KEEPERR))
1913 if (optype == OP_REQUIRE &&
1914 (MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) )
1916 /* Unassume the success we assumed earlier. */
1917 SV *nsv = cx->blk_eval.old_namesv;
1918 (void)hv_delete(GvHVn(PL_incgv), SvPVX(nsv), SvCUR(nsv), G_DISCARD);
1919 DIE(aTHX_ "%"SVf" did not return a true value", nsv);
1926 DIE(aTHX_ "panic: return");
1930 if (gimme == G_SCALAR) {
1933 if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) {
1935 *++newsp = SvREFCNT_inc(*SP);
1940 sv = SvREFCNT_inc(*SP); /* FREETMPS could clobber it */
1942 *++newsp = sv_mortalcopy(sv);
1947 *++newsp = (SvTEMP(*SP)) ? *SP : sv_mortalcopy(*SP);
1950 *++newsp = sv_mortalcopy(*SP);
1953 *++newsp = &PL_sv_undef;
1955 else if (gimme == G_ARRAY) {
1956 while (++MARK <= SP) {
1957 *++newsp = (popsub2 && SvTEMP(*MARK))
1958 ? *MARK : sv_mortalcopy(*MARK);
1959 TAINT_NOT; /* Each item is independent */
1962 PL_stack_sp = newsp;
1965 /* Stack values are safe: */
1968 POPSUB(cx,sv); /* release CV and @_ ... */
1972 PL_curpm = newpm; /* ... and pop $1 et al */
1977 return pop_return();
1984 register PERL_CONTEXT *cx;
1994 if (PL_op->op_flags & OPf_SPECIAL) {
1995 cxix = dopoptoloop(cxstack_ix);
1997 DIE(aTHX_ "Can't \"last\" outside a loop block");
2000 cxix = dopoptolabel(cPVOP->op_pv);
2002 DIE(aTHX_ "Label not found for \"last %s\"", cPVOP->op_pv);
2004 if (cxix < cxstack_ix)
2008 cxstack_ix++; /* temporarily protect top context */
2010 switch (CxTYPE(cx)) {
2013 newsp = PL_stack_base + cx->blk_loop.resetsp;
2014 nextop = cx->blk_loop.last_op->op_next;
2018 nextop = pop_return();
2022 nextop = pop_return();
2026 nextop = pop_return();
2029 DIE(aTHX_ "panic: last");
2033 if (gimme == G_SCALAR) {
2035 *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*SP))
2036 ? *SP : sv_mortalcopy(*SP);
2038 *++newsp = &PL_sv_undef;
2040 else if (gimme == G_ARRAY) {
2041 while (++MARK <= SP) {
2042 *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*MARK))
2043 ? *MARK : sv_mortalcopy(*MARK);
2044 TAINT_NOT; /* Each item is independent */
2052 /* Stack values are safe: */
2055 POPLOOP(cx); /* release loop vars ... */
2059 POPSUB(cx,sv); /* release CV and @_ ... */
2062 PL_curpm = newpm; /* ... and pop $1 et al */
2071 register PERL_CONTEXT *cx;
2074 if (PL_op->op_flags & OPf_SPECIAL) {
2075 cxix = dopoptoloop(cxstack_ix);
2077 DIE(aTHX_ "Can't \"next\" outside a loop block");
2080 cxix = dopoptolabel(cPVOP->op_pv);
2082 DIE(aTHX_ "Label not found for \"next %s\"", cPVOP->op_pv);
2084 if (cxix < cxstack_ix)
2087 /* clear off anything above the scope we're re-entering, but
2088 * save the rest until after a possible continue block */
2089 inner = PL_scopestack_ix;
2091 if (PL_scopestack_ix < inner)
2092 leave_scope(PL_scopestack[PL_scopestack_ix]);
2093 return cx->blk_loop.next_op;
2099 register PERL_CONTEXT *cx;
2102 if (PL_op->op_flags & OPf_SPECIAL) {
2103 cxix = dopoptoloop(cxstack_ix);
2105 DIE(aTHX_ "Can't \"redo\" outside a loop block");
2108 cxix = dopoptolabel(cPVOP->op_pv);
2110 DIE(aTHX_ "Label not found for \"redo %s\"", cPVOP->op_pv);
2112 if (cxix < cxstack_ix)
2116 oldsave = PL_scopestack[PL_scopestack_ix - 1];
2117 LEAVE_SCOPE(oldsave);
2118 return cx->blk_loop.redo_op;
2122 S_dofindlabel(pTHX_ OP *o, char *label, OP **opstack, OP **oplimit)
2126 static char too_deep[] = "Target of goto is too deeply nested";
2129 Perl_croak(aTHX_ too_deep);
2130 if (o->op_type == OP_LEAVE ||
2131 o->op_type == OP_SCOPE ||
2132 o->op_type == OP_LEAVELOOP ||
2133 o->op_type == OP_LEAVESUB ||
2134 o->op_type == OP_LEAVETRY)
2136 *ops++ = cUNOPo->op_first;
2138 Perl_croak(aTHX_ too_deep);
2141 if (o->op_flags & OPf_KIDS) {
2142 /* First try all the kids at this level, since that's likeliest. */
2143 for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
2144 if ((kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) &&
2145 kCOP->cop_label && strEQ(kCOP->cop_label, label))
2148 for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) {
2149 if (kid == PL_lastgotoprobe)
2151 if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) {
2154 else if (ops[-1]->op_type == OP_NEXTSTATE ||
2155 ops[-1]->op_type == OP_DBSTATE)
2160 if ((o = dofindlabel(kid, label, ops, oplimit)))
2179 register PERL_CONTEXT *cx;
2180 #define GOTO_DEPTH 64
2181 OP *enterops[GOTO_DEPTH];
2183 int do_dump = (PL_op->op_type == OP_DUMP);
2184 static char must_have_label[] = "goto must have label";
2187 if (PL_op->op_flags & OPf_STACKED) {
2191 /* This egregious kludge implements goto &subroutine */
2192 if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) {
2194 register PERL_CONTEXT *cx;
2195 CV* cv = (CV*)SvRV(sv);
2201 if (!CvROOT(cv) && !CvXSUB(cv)) {
2206 /* autoloaded stub? */
2207 if (cv != GvCV(gv) && (cv = GvCV(gv)))
2209 autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv),
2210 GvNAMELEN(gv), FALSE);
2211 if (autogv && (cv = GvCV(autogv)))
2213 tmpstr = sv_newmortal();
2214 gv_efullname3(tmpstr, gv, Nullch);
2215 DIE(aTHX_ "Goto undefined subroutine &%"SVf"",tmpstr);
2217 DIE(aTHX_ "Goto undefined subroutine");
2220 /* First do some returnish stuff. */
2221 SvREFCNT_inc(cv); /* avoid premature free during unwind */
2223 cxix = dopoptosub(cxstack_ix);
2225 DIE(aTHX_ "Can't goto subroutine outside a subroutine");
2226 if (cxix < cxstack_ix)
2230 DIE(aTHX_ "Can't goto subroutine from an eval-string");
2232 if (CxTYPE(cx) == CXt_SUB && cx->blk_sub.hasargs) {
2233 /* put @_ back onto stack */
2234 AV* av = cx->blk_sub.argarray;
2236 items = AvFILLp(av) + 1;
2238 EXTEND(PL_stack_sp, items); /* @_ could have been extended. */
2239 Copy(AvARRAY(av), PL_stack_sp, items, SV*);
2240 PL_stack_sp += items;
2241 SvREFCNT_dec(GvAV(PL_defgv));
2242 GvAV(PL_defgv) = cx->blk_sub.savearray;
2243 /* abandon @_ if it got reified */
2245 (void)sv_2mortal((SV*)av); /* delay until return */
2247 av_extend(av, items-1);
2248 AvFLAGS(av) = AVf_REIFY;
2249 PAD_SVl(0) = (SV*)(cx->blk_sub.argarray = av);
2254 else if (CvXSUB(cv)) { /* put GvAV(defgv) back onto stack */
2256 av = GvAV(PL_defgv);
2257 items = AvFILLp(av) + 1;
2259 EXTEND(PL_stack_sp, items); /* @_ could have been extended. */
2260 Copy(AvARRAY(av), PL_stack_sp, items, SV*);
2261 PL_stack_sp += items;
2263 if (CxTYPE(cx) == CXt_SUB &&
2264 !(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth))
2265 SvREFCNT_dec(cx->blk_sub.cv);
2266 oldsave = PL_scopestack[PL_scopestack_ix - 1];
2267 LEAVE_SCOPE(oldsave);
2269 /* Now do some callish stuff. */
2271 SAVEFREESV(cv); /* later, undo the 'avoid premature free' hack */
2273 #ifdef PERL_XSUB_OLDSTYLE
2274 if (CvOLDSTYLE(cv)) {
2275 I32 (*fp3)(int,int,int);
2280 fp3 = (I32(*)(int,int,int))CvXSUB(cv);
2281 items = (*fp3)(CvXSUBANY(cv).any_i32,
2282 mark - PL_stack_base + 1,
2284 SP = PL_stack_base + items;
2287 #endif /* PERL_XSUB_OLDSTYLE */
2292 PL_stack_sp--; /* There is no cv arg. */
2293 /* Push a mark for the start of arglist */
2295 (void)(*CvXSUB(cv))(aTHX_ cv);
2296 /* Pop the current context like a decent sub should */
2297 POPBLOCK(cx, PL_curpm);
2298 /* Do _not_ use PUTBACK, keep the XSUB's return stack! */
2301 return pop_return();
2304 AV* padlist = CvPADLIST(cv);
2305 if (CxTYPE(cx) == CXt_EVAL) {
2306 PL_in_eval = cx->blk_eval.old_in_eval;
2307 PL_eval_root = cx->blk_eval.old_eval_root;
2308 cx->cx_type = CXt_SUB;
2309 cx->blk_sub.hasargs = 0;
2311 cx->blk_sub.cv = cv;
2312 cx->blk_sub.olddepth = (U16)CvDEPTH(cv);
2315 if (CvDEPTH(cv) < 2)
2316 (void)SvREFCNT_inc(cv);
2318 if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION))
2319 sub_crush_depth(cv);
2320 pad_push(padlist, CvDEPTH(cv), cx->blk_sub.hasargs);
2322 PAD_SET_CUR(padlist, CvDEPTH(cv));
2323 if (cx->blk_sub.hasargs)
2325 AV* av = (AV*)PAD_SVl(0);
2328 cx->blk_sub.savearray = GvAV(PL_defgv);
2329 GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av);
2330 CX_CURPAD_SAVE(cx->blk_sub);
2331 cx->blk_sub.argarray = av;
2334 if (items >= AvMAX(av) + 1) {
2336 if (AvARRAY(av) != ary) {
2337 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
2338 SvPVX(av) = (char*)ary;
2340 if (items >= AvMAX(av) + 1) {
2341 AvMAX(av) = items - 1;
2342 Renew(ary,items+1,SV*);
2344 SvPVX(av) = (char*)ary;
2347 Copy(mark,AvARRAY(av),items,SV*);
2348 AvFILLp(av) = items - 1;
2349 assert(!AvREAL(av));
2356 if (PERLDB_SUB) { /* Checking curstash breaks DProf. */
2358 * We do not care about using sv to call CV;
2359 * it's for informational purposes only.
2361 SV *sv = GvSV(PL_DBsub);
2364 if (PERLDB_SUB_NN) {
2365 (void)SvUPGRADE(sv, SVt_PVIV);
2368 SvIVX(sv) = PTR2IV(cv); /* Do it the quickest way */
2371 gv_efullname3(sv, CvGV(cv), Nullch);
2374 && (gotocv = get_cv("DB::goto", FALSE)) ) {
2375 PUSHMARK( PL_stack_sp );
2376 call_sv((SV*)gotocv, G_SCALAR | G_NODEBUG);
2380 RETURNOP(CvSTART(cv));
2384 label = SvPV(sv,n_a);
2385 if (!(do_dump || *label))
2386 DIE(aTHX_ must_have_label);
2389 else if (PL_op->op_flags & OPf_SPECIAL) {
2391 DIE(aTHX_ must_have_label);
2394 label = cPVOP->op_pv;
2396 if (label && *label) {
2398 bool leaving_eval = FALSE;
2399 bool in_block = FALSE;
2400 PERL_CONTEXT *last_eval_cx = 0;
2404 PL_lastgotoprobe = 0;
2406 for (ix = cxstack_ix; ix >= 0; ix--) {
2408 switch (CxTYPE(cx)) {
2410 leaving_eval = TRUE;
2411 if (!CxTRYBLOCK(cx)) {
2412 gotoprobe = (last_eval_cx ?
2413 last_eval_cx->blk_eval.old_eval_root :
2418 /* else fall through */
2420 gotoprobe = cx->blk_oldcop->op_sibling;
2426 gotoprobe = cx->blk_oldcop->op_sibling;
2429 gotoprobe = PL_main_root;
2432 if (CvDEPTH(cx->blk_sub.cv)) {
2433 gotoprobe = CvROOT(cx->blk_sub.cv);
2439 DIE(aTHX_ "Can't \"goto\" out of a pseudo block");
2442 DIE(aTHX_ "panic: goto");
2443 gotoprobe = PL_main_root;
2447 retop = dofindlabel(gotoprobe, label,
2448 enterops, enterops + GOTO_DEPTH);
2452 PL_lastgotoprobe = gotoprobe;
2455 DIE(aTHX_ "Can't find label %s", label);
2457 /* if we're leaving an eval, check before we pop any frames
2458 that we're not going to punt, otherwise the error
2461 if (leaving_eval && *enterops && enterops[1]) {
2463 for (i = 1; enterops[i]; i++)
2464 if (enterops[i]->op_type == OP_ENTERITER)
2465 DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
2468 /* pop unwanted frames */
2470 if (ix < cxstack_ix) {
2477 oldsave = PL_scopestack[PL_scopestack_ix];
2478 LEAVE_SCOPE(oldsave);
2481 /* push wanted frames */
2483 if (*enterops && enterops[1]) {
2485 ix = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1;
2486 for (; enterops[ix]; ix++) {
2487 PL_op = enterops[ix];
2488 /* Eventually we may want to stack the needed arguments
2489 * for each op. For now, we punt on the hard ones. */
2490 if (PL_op->op_type == OP_ENTERITER)
2491 DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop");
2492 CALL_FPTR(PL_op->op_ppaddr)(aTHX);
2500 if (!retop) retop = PL_main_start;
2502 PL_restartop = retop;
2503 PL_do_undump = TRUE;
2507 PL_restartop = 0; /* hmm, must be GNU unexec().. */
2508 PL_do_undump = FALSE;
2524 if (anum == 1 && (PL_op->op_private & OPpEXIT_VMSISH))
2526 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
2529 PL_exit_flags |= PERL_EXIT_EXPECTED;
2531 PUSHs(&PL_sv_undef);
2539 NV value = SvNVx(GvSV(cCOP->cop_gv));
2540 register I32 match = I_32(value);
2543 if (((NV)match) > value)
2544 --match; /* was fractional--truncate other way */
2546 match -= cCOP->uop.scop.scop_offset;
2549 else if (match > cCOP->uop.scop.scop_max)
2550 match = cCOP->uop.scop.scop_max;
2551 PL_op = cCOP->uop.scop.scop_next[match];
2561 PL_op = PL_op->op_next; /* can't assume anything */
2564 match = *(SvPVx(GvSV(cCOP->cop_gv), n_a)) & 255;
2565 match -= cCOP->uop.scop.scop_offset;
2568 else if (match > cCOP->uop.scop.scop_max)
2569 match = cCOP->uop.scop.scop_max;
2570 PL_op = cCOP->uop.scop.scop_next[match];
2579 S_save_lines(pTHX_ AV *array, SV *sv)
2581 register char *s = SvPVX(sv);
2582 register char *send = SvPVX(sv) + SvCUR(sv);
2584 register I32 line = 1;
2586 while (s && s < send) {
2587 SV *tmpstr = NEWSV(85,0);
2589 sv_upgrade(tmpstr, SVt_PVMG);
2590 t = strchr(s, '\n');
2596 sv_setpvn(tmpstr, s, t - s);
2597 av_store(array, line++, tmpstr);
2602 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2604 S_docatch_body(pTHX_ va_list args)
2606 return docatch_body();
2611 S_docatch_body(pTHX)
2618 S_docatch(pTHX_ OP *o)
2623 volatile PERL_SI *cursi = PL_curstackinfo;
2627 assert(CATCH_GET == TRUE);
2631 /* Normally, the leavetry at the end of this block of ops will
2632 * pop an op off the return stack and continue there. By setting
2633 * the op to Nullop, we force an exit from the inner runops()
2636 retop = pop_return();
2637 push_return(Nullop);
2639 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2641 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_docatch_body));
2647 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2653 /* die caught by an inner eval - continue inner loop */
2654 if (PL_restartop && cursi == PL_curstackinfo) {
2655 PL_op = PL_restartop;
2659 /* a die in this eval - continue in outer loop */
2675 Perl_sv_compile_2op(pTHX_ SV *sv, OP** startop, char *code, PAD** padp)
2676 /* sv Text to convert to OP tree. */
2677 /* startop op_free() this to undo. */
2678 /* code Short string id of the caller. */
2680 dSP; /* Make POPBLOCK work. */
2683 I32 gimme = 0; /* SUSPECT - INITIALZE TO WHAT? NI-S */
2687 char tbuf[TYPE_DIGITS(long) + 12 + 10];
2688 char *tmpbuf = tbuf;
2691 CV* runcv = Nullcv; /* initialise to avoid compiler warnings */
2696 /* switch to eval mode */
2698 if (IN_PERL_COMPILETIME) {
2699 SAVECOPSTASH_FREE(&PL_compiling);
2700 CopSTASH_set(&PL_compiling, PL_curstash);
2702 if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
2703 SV *sv = sv_newmortal();
2704 Perl_sv_setpvf(aTHX_ sv, "_<(%.10seval %lu)[%s:%"IVdf"]",
2705 code, (unsigned long)++PL_evalseq,
2706 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
2710 sprintf(tmpbuf, "_<(%.10s_eval %lu)", code, (unsigned long)++PL_evalseq);
2711 SAVECOPFILE_FREE(&PL_compiling);
2712 CopFILE_set(&PL_compiling, tmpbuf+2);
2713 SAVECOPLINE(&PL_compiling);
2714 CopLINE_set(&PL_compiling, 1);
2715 /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
2716 deleting the eval's FILEGV from the stash before gv_check() runs
2717 (i.e. before run-time proper). To work around the coredump that
2718 ensues, we always turn GvMULTI_on for any globals that were
2719 introduced within evals. See force_ident(). GSAR 96-10-12 */
2720 safestr = savepv(tmpbuf);
2721 SAVEDELETE(PL_defstash, safestr, strlen(safestr));
2723 #ifdef OP_IN_REGISTER
2729 /* we get here either during compilation, or via pp_regcomp at runtime */
2730 runtime = IN_PERL_RUNTIME;
2732 runcv = find_runcv(NULL);
2735 PL_op->op_type = OP_ENTEREVAL;
2736 PL_op->op_flags = 0; /* Avoid uninit warning. */
2737 PUSHBLOCK(cx, CXt_EVAL|(IN_PERL_COMPILETIME ? 0 : CXp_REAL), SP);
2738 PUSHEVAL(cx, 0, Nullgv);
2741 rop = doeval(G_SCALAR, startop, runcv, PL_curcop->cop_seq);
2743 rop = doeval(G_SCALAR, startop, PL_compcv, PL_cop_seqmax);
2744 POPBLOCK(cx,PL_curpm);
2747 (*startop)->op_type = OP_NULL;
2748 (*startop)->op_ppaddr = PL_ppaddr[OP_NULL];
2750 /* XXX DAPM do this properly one year */
2751 *padp = (AV*)SvREFCNT_inc(PL_comppad);
2753 if (IN_PERL_COMPILETIME)
2754 PL_compiling.op_private = (U8)(PL_hints & HINT_PRIVATE_MASK);
2755 #ifdef OP_IN_REGISTER
2763 =for apidoc find_runcv
2765 Locate the CV corresponding to the currently executing sub or eval.
2766 If db_seqp is non_null, skip CVs that are in the DB package and populate
2767 *db_seqp with the cop sequence number at the point that the DB:: code was
2768 entered. (allows debuggers to eval in the scope of the breakpoint rather
2769 than in in the scope of the debuger itself).
2775 Perl_find_runcv(pTHX_ U32 *db_seqp)
2782 *db_seqp = PL_curcop->cop_seq;
2783 for (si = PL_curstackinfo; si; si = si->si_prev) {
2784 for (ix = si->si_cxix; ix >= 0; ix--) {
2785 cx = &(si->si_cxstack[ix]);
2786 if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) {
2787 CV *cv = cx->blk_sub.cv;
2788 /* skip DB:: code */
2789 if (db_seqp && PL_debstash && CvSTASH(cv) == PL_debstash) {
2790 *db_seqp = cx->blk_oldcop->cop_seq;
2795 else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx))
2803 /* Compile a require/do, an eval '', or a /(?{...})/.
2804 * In the last case, startop is non-null, and contains the address of
2805 * a pointer that should be set to the just-compiled code.
2806 * outside is the lexically enclosing CV (if any) that invoked us.
2809 /* With USE_5005THREADS, eval_owner must be held on entry to doeval */
2811 S_doeval(pTHX_ int gimme, OP** startop, CV* outside, U32 seq)
2816 PL_in_eval = ((saveop && saveop->op_type == OP_REQUIRE)
2817 ? (EVAL_INREQUIRE | (PL_in_eval & EVAL_INEVAL))
2822 SAVESPTR(PL_compcv);
2823 PL_compcv = (CV*)NEWSV(1104,0);
2824 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2825 CvEVAL_on(PL_compcv);
2826 assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL);
2827 cxstack[cxstack_ix].blk_eval.cv = PL_compcv;
2829 CvOUTSIDE_SEQ(PL_compcv) = seq;
2830 CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outside);
2832 /* set up a scratch pad */
2834 CvPADLIST(PL_compcv) = pad_new(padnew_SAVE);
2837 SAVEMORTALIZESV(PL_compcv); /* must remain until end of current statement */
2839 /* make sure we compile in the right package */
2841 if (CopSTASH_ne(PL_curcop, PL_curstash)) {
2842 SAVESPTR(PL_curstash);
2843 PL_curstash = CopSTASH(PL_curcop);
2845 SAVESPTR(PL_beginav);
2846 PL_beginav = newAV();
2847 SAVEFREESV(PL_beginav);
2848 SAVEI32(PL_error_count);
2850 /* try to compile it */
2852 PL_eval_root = Nullop;
2854 PL_curcop = &PL_compiling;
2855 PL_curcop->cop_arybase = 0;
2856 if (saveop && saveop->op_flags & OPf_SPECIAL)
2857 PL_in_eval |= EVAL_KEEPERR;
2860 if (yyparse() || PL_error_count || !PL_eval_root) {
2861 SV **newsp; /* Used by POPBLOCK. */
2862 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
2863 I32 optype = 0; /* Might be reset by POPEVAL. */
2868 op_free(PL_eval_root);
2869 PL_eval_root = Nullop;
2871 SP = PL_stack_base + POPMARK; /* pop original mark */
2873 POPBLOCK(cx,PL_curpm);
2879 if (optype == OP_REQUIRE) {
2880 char* msg = SvPVx(ERRSV, n_a);
2881 SV *nsv = cx->blk_eval.old_namesv;
2882 (void)hv_store(GvHVn(PL_incgv), SvPVX(nsv), SvCUR(nsv),
2884 DIE(aTHX_ "%sCompilation failed in require",
2885 *msg ? msg : "Unknown error\n");
2888 char* msg = SvPVx(ERRSV, n_a);
2890 POPBLOCK(cx,PL_curpm);
2892 Perl_croak(aTHX_ "%sCompilation failed in regexp",
2893 (*msg ? msg : "Unknown error\n"));
2896 char* msg = SvPVx(ERRSV, n_a);
2898 sv_setpv(ERRSV, "Compilation error");
2903 CopLINE_set(&PL_compiling, 0);
2905 *startop = PL_eval_root;
2907 SAVEFREEOP(PL_eval_root);
2909 /* Set the context for this new optree.
2910 * If the last op is an OP_REQUIRE, force scalar context.
2911 * Otherwise, propagate the context from the eval(). */
2912 if (PL_eval_root->op_type == OP_LEAVEEVAL
2913 && cUNOPx(PL_eval_root)->op_first->op_type == OP_LINESEQ
2914 && cLISTOPx(cUNOPx(PL_eval_root)->op_first)->op_last->op_type
2916 scalar(PL_eval_root);
2917 else if (gimme & G_VOID)
2918 scalarvoid(PL_eval_root);
2919 else if (gimme & G_ARRAY)
2922 scalar(PL_eval_root);
2924 DEBUG_x(dump_eval());
2926 /* Register with debugger: */
2927 if (PERLDB_INTER && saveop->op_type == OP_REQUIRE) {
2928 CV *cv = get_cv("DB::postponed", FALSE);
2932 XPUSHs((SV*)CopFILEGV(&PL_compiling));
2934 call_sv((SV*)cv, G_DISCARD);
2938 /* compiled okay, so do it */
2940 CvDEPTH(PL_compcv) = 1;
2941 SP = PL_stack_base + POPMARK; /* pop original mark */
2942 PL_op = saveop; /* The caller may need it. */
2943 PL_lex_state = LEX_NOTPARSING; /* $^S needs this. */
2945 RETURNOP(PL_eval_start);
2949 S_doopen_pm(pTHX_ const char *name, const char *mode)
2951 #ifndef PERL_DISABLE_PMC
2952 STRLEN namelen = strlen(name);
2955 if (namelen > 3 && strEQ(name + namelen - 3, ".pm")) {
2956 SV *pmcsv = Perl_newSVpvf(aTHX_ "%s%c", name, 'c');
2957 char *pmc = SvPV_nolen(pmcsv);
2960 if (PerlLIO_stat(pmc, &pmcstat) < 0) {
2961 fp = PerlIO_open(name, mode);
2964 if (PerlLIO_stat(name, &pmstat) < 0 ||
2965 pmstat.st_mtime < pmcstat.st_mtime)
2967 fp = PerlIO_open(pmc, mode);
2970 fp = PerlIO_open(name, mode);
2973 SvREFCNT_dec(pmcsv);
2976 fp = PerlIO_open(name, mode);
2980 return PerlIO_open(name, mode);
2981 #endif /* !PERL_DISABLE_PMC */
2987 register PERL_CONTEXT *cx;
2991 char *tryname = Nullch;
2992 SV *namesv = Nullsv;
2994 I32 gimme = GIMME_V;
2995 PerlIO *tryrsfp = 0;
2997 int filter_has_file = 0;
2998 GV *filter_child_proc = 0;
2999 SV *filter_state = 0;
3006 if (SvNIOKp(sv) && PL_op->op_type != OP_DOFILE) {
3007 if (SvPOK(sv) && SvNOK(sv) && SvNV(sv)) { /* require v5.6.1 */
3008 UV rev = 0, ver = 0, sver = 0;
3010 U8 *s = (U8*)SvPVX(sv);
3011 U8 *end = (U8*)SvPVX(sv) + SvCUR(sv);
3013 rev = utf8n_to_uvchr(s, end - s, &len, 0);
3016 ver = utf8n_to_uvchr(s, end - s, &len, 0);
3019 sver = utf8n_to_uvchr(s, end - s, &len, 0);
3022 if (PERL_REVISION < rev
3023 || (PERL_REVISION == rev
3024 && (PERL_VERSION < ver
3025 || (PERL_VERSION == ver
3026 && PERL_SUBVERSION < sver))))
3028 DIE(aTHX_ "Perl v%"UVuf".%"UVuf".%"UVuf" required--this is only "
3029 "v%d.%d.%d, stopped", rev, ver, sver, PERL_REVISION,
3030 PERL_VERSION, PERL_SUBVERSION);
3032 if (ckWARN(WARN_PORTABLE))
3033 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
3034 "v-string in use/require non-portable");
3037 else if (!SvPOKp(sv)) { /* require 5.005_03 */
3038 if ((NV)PERL_REVISION + ((NV)PERL_VERSION/(NV)1000)
3039 + ((NV)PERL_SUBVERSION/(NV)1000000)
3040 + 0.00000099 < SvNV(sv))
3044 NV nver = (nrev - rev) * 1000;
3045 UV ver = (UV)(nver + 0.0009);
3046 NV nsver = (nver - ver) * 1000;
3047 UV sver = (UV)(nsver + 0.0009);
3049 /* help out with the "use 5.6" confusion */
3050 if (sver == 0 && (rev > 5 || (rev == 5 && ver >= 100))) {
3051 DIE(aTHX_ "Perl v%"UVuf".%"UVuf".%"UVuf" required"
3052 " (did you mean v%"UVuf".%03"UVuf"?)--"
3053 "this is only v%d.%d.%d, stopped",
3054 rev, ver, sver, rev, ver/100,
3055 PERL_REVISION, PERL_VERSION, PERL_SUBVERSION);
3058 DIE(aTHX_ "Perl v%"UVuf".%"UVuf".%"UVuf" required--"
3059 "this is only v%d.%d.%d, stopped",
3060 rev, ver, sver, PERL_REVISION, PERL_VERSION,
3067 name = SvPV(sv, len);
3068 if (!(name && len > 0 && *name))
3069 DIE(aTHX_ "Null filename used");
3070 TAINT_PROPER("require");
3071 if (PL_op->op_type == OP_REQUIRE &&
3072 (svp = hv_fetch(GvHVn(PL_incgv), name, len, 0))) {
3073 if (*svp != &PL_sv_undef)
3076 DIE(aTHX_ "Compilation failed in require");
3079 /* prepare to compile file */
3081 if (path_is_absolute(name)) {
3083 tryrsfp = doopen_pm(name,PERL_SCRIPT_MODE);
3085 #ifdef MACOS_TRADITIONAL
3089 MacPerl_CanonDir(name, newname, 1);
3090 if (path_is_absolute(newname)) {
3092 tryrsfp = doopen_pm(newname,PERL_SCRIPT_MODE);
3097 AV *ar = GvAVn(PL_incgv);
3101 if ((unixname = tounixspec(name, Nullch)) != Nullch)
3104 namesv = NEWSV(806, 0);
3105 for (i = 0; i <= AvFILL(ar); i++) {
3106 SV *dirsv = *av_fetch(ar, i, TRUE);
3112 if (SvTYPE(SvRV(loader)) == SVt_PVAV
3113 && !sv_isobject(loader))
3115 loader = *av_fetch((AV *)SvRV(loader), 0, TRUE);
3118 Perl_sv_setpvf(aTHX_ namesv, "/loader/0x%"UVxf"/%s",
3119 PTR2UV(SvRV(dirsv)), name);
3120 tryname = SvPVX(namesv);
3131 if (sv_isobject(loader))
3132 count = call_method("INC", G_ARRAY);
3134 count = call_sv(loader, G_ARRAY);
3144 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVGV) {
3148 if (SvTYPE(arg) == SVt_PVGV) {
3149 IO *io = GvIO((GV *)arg);
3154 tryrsfp = IoIFP(io);
3155 if (IoTYPE(io) == IoTYPE_PIPE) {
3156 /* reading from a child process doesn't
3157 nest -- when returning from reading
3158 the inner module, the outer one is
3159 unreadable (closed?) I've tried to
3160 save the gv to manage the lifespan of
3161 the pipe, but this didn't help. XXX */
3162 filter_child_proc = (GV *)arg;
3163 (void)SvREFCNT_inc(filter_child_proc);
3166 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
3167 PerlIO_close(IoOFP(io));
3179 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVCV) {
3181 (void)SvREFCNT_inc(filter_sub);
3184 filter_state = SP[i];
3185 (void)SvREFCNT_inc(filter_state);
3189 tryrsfp = PerlIO_open("/dev/null",
3205 filter_has_file = 0;
3206 if (filter_child_proc) {
3207 SvREFCNT_dec(filter_child_proc);
3208 filter_child_proc = 0;
3211 SvREFCNT_dec(filter_state);
3215 SvREFCNT_dec(filter_sub);
3220 if (!path_is_absolute(name)
3221 #ifdef MACOS_TRADITIONAL
3222 /* We consider paths of the form :a:b ambiguous and interpret them first
3223 as global then as local
3225 || (*name == ':' && name[1] != ':' && strchr(name+2, ':'))
3228 char *dir = SvPVx(dirsv, n_a);
3229 #ifdef MACOS_TRADITIONAL
3233 MacPerl_CanonDir(name, buf2, 1);
3234 Perl_sv_setpvf(aTHX_ namesv, "%s%s", MacPerl_CanonDir(dir, buf1, 0), buf2+(buf2[0] == ':'));
3238 if ((unixdir = tounixpath(dir, Nullch)) == Nullch)
3240 sv_setpv(namesv, unixdir);
3241 sv_catpv(namesv, unixname);
3243 Perl_sv_setpvf(aTHX_ namesv, "%s/%s", dir, name);
3246 TAINT_PROPER("require");
3247 tryname = SvPVX(namesv);
3248 tryrsfp = doopen_pm(tryname, PERL_SCRIPT_MODE);
3250 if (tryname[0] == '.' && tryname[1] == '/')
3259 SAVECOPFILE_FREE(&PL_compiling);
3260 CopFILE_set(&PL_compiling, tryrsfp ? tryname : name);
3261 SvREFCNT_dec(namesv);
3263 if (PL_op->op_type == OP_REQUIRE) {
3264 char *msgstr = name;
3265 if (namesv) { /* did we lookup @INC? */
3266 SV *msg = sv_2mortal(newSVpv(msgstr,0));
3267 SV *dirmsgsv = NEWSV(0, 0);
3268 AV *ar = GvAVn(PL_incgv);
3270 sv_catpvn(msg, " in @INC", 8);
3271 if (instr(SvPVX(msg), ".h "))
3272 sv_catpv(msg, " (change .h to .ph maybe?)");
3273 if (instr(SvPVX(msg), ".ph "))
3274 sv_catpv(msg, " (did you run h2ph?)");
3275 sv_catpv(msg, " (@INC contains:");
3276 for (i = 0; i <= AvFILL(ar); i++) {
3277 char *dir = SvPVx(*av_fetch(ar, i, TRUE), n_a);
3278 Perl_sv_setpvf(aTHX_ dirmsgsv, " %s", dir);
3279 sv_catsv(msg, dirmsgsv);
3281 sv_catpvn(msg, ")", 1);
3282 SvREFCNT_dec(dirmsgsv);
3283 msgstr = SvPV_nolen(msg);
3285 DIE(aTHX_ "Can't locate %s", msgstr);
3291 SETERRNO(0, SS_NORMAL);
3293 /* Assume success here to prevent recursive requirement. */
3295 /* Check whether a hook in @INC has already filled %INC */
3296 if (!hook_sv || !(svp = hv_fetch(GvHVn(PL_incgv), name, len, 0))) {
3297 (void)hv_store(GvHVn(PL_incgv), name, len,
3298 (hook_sv ? SvREFCNT_inc(hook_sv)
3299 : newSVpv(CopFILE(&PL_compiling), 0)),
3305 lex_start(sv_2mortal(newSVpvn("",0)));
3306 SAVEGENERICSV(PL_rsfp_filters);
3307 PL_rsfp_filters = Nullav;
3312 SAVESPTR(PL_compiling.cop_warnings);
3313 if (PL_dowarn & G_WARN_ALL_ON)
3314 PL_compiling.cop_warnings = pWARN_ALL ;
3315 else if (PL_dowarn & G_WARN_ALL_OFF)
3316 PL_compiling.cop_warnings = pWARN_NONE ;
3317 else if (PL_taint_warn)
3318 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
3320 PL_compiling.cop_warnings = pWARN_STD ;
3321 SAVESPTR(PL_compiling.cop_io);
3322 PL_compiling.cop_io = Nullsv;
3324 if (filter_sub || filter_child_proc) {
3325 SV *datasv = filter_add(run_user_filter, Nullsv);
3326 IoLINES(datasv) = filter_has_file;
3327 IoFMT_GV(datasv) = (GV *)filter_child_proc;
3328 IoTOP_GV(datasv) = (GV *)filter_state;
3329 IoBOTTOM_GV(datasv) = (GV *)filter_sub;
3332 /* switch to eval mode */
3333 push_return(PL_op->op_next);
3334 PUSHBLOCK(cx, CXt_EVAL, SP);
3335 PUSHEVAL(cx, name, Nullgv);
3337 SAVECOPLINE(&PL_compiling);
3338 CopLINE_set(&PL_compiling, 0);
3342 /* Store and reset encoding. */
3343 encoding = PL_encoding;
3344 PL_encoding = Nullsv;
3346 op = DOCATCH(doeval(gimme, NULL, Nullcv, PL_curcop->cop_seq));
3348 /* Restore encoding. */
3349 PL_encoding = encoding;
3356 return pp_require();
3362 register PERL_CONTEXT *cx;
3364 I32 gimme = GIMME_V, was = PL_sub_generation;
3365 char tbuf[TYPE_DIGITS(long) + 12];
3366 char *tmpbuf = tbuf;
3375 TAINT_PROPER("eval");
3381 /* switch to eval mode */
3383 if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) {
3384 SV *sv = sv_newmortal();
3385 Perl_sv_setpvf(aTHX_ sv, "_<(eval %lu)[%s:%"IVdf"]",
3386 (unsigned long)++PL_evalseq,
3387 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
3391 sprintf(tmpbuf, "_<(eval %lu)", (unsigned long)++PL_evalseq);
3392 SAVECOPFILE_FREE(&PL_compiling);
3393 CopFILE_set(&PL_compiling, tmpbuf+2);
3394 SAVECOPLINE(&PL_compiling);
3395 CopLINE_set(&PL_compiling, 1);
3396 /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up
3397 deleting the eval's FILEGV from the stash before gv_check() runs
3398 (i.e. before run-time proper). To work around the coredump that
3399 ensues, we always turn GvMULTI_on for any globals that were
3400 introduced within evals. See force_ident(). GSAR 96-10-12 */
3401 safestr = savepv(tmpbuf);
3402 SAVEDELETE(PL_defstash, safestr, strlen(safestr));
3404 PL_hints = PL_op->op_targ;
3405 SAVESPTR(PL_compiling.cop_warnings);
3406 if (specialWARN(PL_curcop->cop_warnings))
3407 PL_compiling.cop_warnings = PL_curcop->cop_warnings;
3409 PL_compiling.cop_warnings = newSVsv(PL_curcop->cop_warnings);
3410 SAVEFREESV(PL_compiling.cop_warnings);
3412 SAVESPTR(PL_compiling.cop_io);
3413 if (specialCopIO(PL_curcop->cop_io))
3414 PL_compiling.cop_io = PL_curcop->cop_io;
3416 PL_compiling.cop_io = newSVsv(PL_curcop->cop_io);
3417 SAVEFREESV(PL_compiling.cop_io);
3419 /* special case: an eval '' executed within the DB package gets lexically
3420 * placed in the first non-DB CV rather than the current CV - this
3421 * allows the debugger to execute code, find lexicals etc, in the
3422 * scope of the code being debugged. Passing &seq gets find_runcv
3423 * to do the dirty work for us */
3424 runcv = find_runcv(&seq);
3426 push_return(PL_op->op_next);
3427 PUSHBLOCK(cx, (CXt_EVAL|CXp_REAL), SP);
3428 PUSHEVAL(cx, 0, Nullgv);
3430 /* prepare to compile string */
3432 if (PERLDB_LINE && PL_curstash != PL_debstash)
3433 save_lines(CopFILEAV(&PL_compiling), PL_linestr);
3435 ret = doeval(gimme, NULL, runcv, seq);
3436 if (PERLDB_INTER && was != (I32)PL_sub_generation /* Some subs defined here. */
3437 && ret != PL_op->op_next) { /* Successive compilation. */
3438 strcpy(safestr, "_<(eval )"); /* Anything fake and short. */
3440 return DOCATCH(ret);
3450 register PERL_CONTEXT *cx;
3452 U8 save_flags = PL_op -> op_flags;
3457 retop = pop_return();
3460 if (gimme == G_VOID)
3462 else if (gimme == G_SCALAR) {
3465 if (SvFLAGS(TOPs) & SVs_TEMP)
3468 *MARK = sv_mortalcopy(TOPs);
3472 *MARK = &PL_sv_undef;
3477 /* in case LEAVE wipes old return values */
3478 for (mark = newsp + 1; mark <= SP; mark++) {
3479 if (!(SvFLAGS(*mark) & SVs_TEMP)) {
3480 *mark = sv_mortalcopy(*mark);
3481 TAINT_NOT; /* Each item is independent */
3485 PL_curpm = newpm; /* Don't pop $1 et al till now */
3488 assert(CvDEPTH(PL_compcv) == 1);
3490 CvDEPTH(PL_compcv) = 0;
3493 if (optype == OP_REQUIRE &&
3494 !(gimme == G_SCALAR ? SvTRUE(*SP) : SP > newsp))
3496 /* Unassume the success we assumed earlier. */
3497 SV *nsv = cx->blk_eval.old_namesv;
3498 (void)hv_delete(GvHVn(PL_incgv), SvPVX(nsv), SvCUR(nsv), G_DISCARD);
3499 retop = Perl_die(aTHX_ "%"SVf" did not return a true value", nsv);
3500 /* die_where() did LEAVE, or we won't be here */
3504 if (!(save_flags & OPf_SPECIAL))
3514 register PERL_CONTEXT *cx;
3515 I32 gimme = GIMME_V;
3520 push_return(cLOGOP->op_other->op_next);
3521 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), SP);
3524 PL_in_eval = EVAL_INEVAL;
3527 return DOCATCH(PL_op->op_next);
3538 register PERL_CONTEXT *cx;
3543 retop = pop_return();
3546 if (gimme == G_VOID)
3548 else if (gimme == G_SCALAR) {
3551 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
3554 *MARK = sv_mortalcopy(TOPs);
3558 *MARK = &PL_sv_undef;
3563 /* in case LEAVE wipes old return values */
3564 for (mark = newsp + 1; mark <= SP; mark++) {
3565 if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) {
3566 *mark = sv_mortalcopy(*mark);
3567 TAINT_NOT; /* Each item is independent */
3571 PL_curpm = newpm; /* Don't pop $1 et al till now */
3579 S_doparseform(pTHX_ SV *sv)
3582 register char *s = SvPV_force(sv, len);
3583 register char *send = s + len;
3584 register char *base = Nullch;
3585 register I32 skipspaces = 0;
3586 bool noblank = FALSE;
3587 bool repeat = FALSE;
3588 bool postspace = FALSE;
3594 bool unchopnum = FALSE;
3595 int maxops = 12; /* FF_LINEMARK + FF_END + 10 (\0 without preceding \n) */
3598 Perl_croak(aTHX_ "Null picture in formline");
3600 /* estimate the buffer size needed */
3601 for (base = s; s <= send; s++) {
3602 if (*s == '\n' || *s == '@' || *s == '^')
3608 New(804, fops, maxops, U32);
3613 *fpc++ = FF_LINEMARK;
3614 noblank = repeat = FALSE;
3632 case ' ': case '\t':
3639 } /* else FALL THROUGH */
3647 *fpc++ = FF_LITERAL;
3655 *fpc++ = (U16)skipspaces;
3659 *fpc++ = FF_NEWLINE;
3663 arg = fpc - linepc + 1;
3670 *fpc++ = FF_LINEMARK;
3671 noblank = repeat = FALSE;
3680 ischop = s[-1] == '^';
3686 arg = (s - base) - 1;
3688 *fpc++ = FF_LITERAL;
3696 *fpc++ = 2; /* skip the @* or ^* */
3698 *fpc++ = FF_LINESNGL;
3701 *fpc++ = FF_LINEGLOB;
3703 else if (*s == '#' || (*s == '.' && s[1] == '#')) {
3704 arg = ischop ? 512 : 0;
3714 arg |= 256 + (s - f);
3716 *fpc++ = s - base; /* fieldsize for FETCH */
3717 *fpc++ = FF_DECIMAL;
3719 unchopnum |= ! ischop;
3721 else if (*s == '0' && s[1] == '#') { /* Zero padded decimals */
3722 arg = ischop ? 512 : 0;
3724 s++; /* skip the '0' first */
3733 arg |= 256 + (s - f);
3735 *fpc++ = s - base; /* fieldsize for FETCH */
3736 *fpc++ = FF_0DECIMAL;
3738 unchopnum |= ! ischop;
3742 bool ismore = FALSE;
3745 while (*++s == '>') ;
3746 prespace = FF_SPACE;
3748 else if (*s == '|') {
3749 while (*++s == '|') ;
3750 prespace = FF_HALFSPACE;
3755 while (*++s == '<') ;
3758 if (*s == '.' && s[1] == '.' && s[2] == '.') {
3762 *fpc++ = s - base; /* fieldsize for FETCH */
3764 *fpc++ = ischop ? FF_CHECKCHOP : FF_CHECKNL;
3767 *fpc++ = (U16)prespace;
3781 assert (fpc <= fops + maxops); /* ensure our buffer estimate was valid */
3783 { /* need to jump to the next word */
3785 z = WORD_ALIGN - SvCUR(sv) % WORD_ALIGN;
3786 SvGROW(sv, SvCUR(sv) + z + arg * sizeof(U32) + 4);
3787 s = SvPVX(sv) + SvCUR(sv) + z;
3789 Copy(fops, s, arg, U32);
3791 sv_magic(sv, Nullsv, PERL_MAGIC_fm, Nullch, 0);
3794 if (unchopnum && repeat)
3795 DIE(aTHX_ "Repeated format line will never terminate (~~ and @#)");
3801 S_num_overflow(NV value, I32 fldsize, I32 frcsize)
3803 /* Can value be printed in fldsize chars, using %*.*f ? */
3807 int intsize = fldsize - (value < 0 ? 1 : 0);
3814 while (intsize--) pwr *= 10.0;
3815 while (frcsize--) eps /= 10.0;
3818 if (value + eps >= pwr)
3821 if (value - eps <= -pwr)
3828 run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen)
3830 SV *datasv = FILTER_DATA(idx);
3831 int filter_has_file = IoLINES(datasv);
3832 GV *filter_child_proc = (GV *)IoFMT_GV(datasv);
3833 SV *filter_state = (SV *)IoTOP_GV(datasv);
3834 SV *filter_sub = (SV *)IoBOTTOM_GV(datasv);
3837 /* I was having segfault trouble under Linux 2.2.5 after a
3838 parse error occured. (Had to hack around it with a test
3839 for PL_error_count == 0.) Solaris doesn't segfault --
3840 not sure where the trouble is yet. XXX */
3842 if (filter_has_file) {
3843 len = FILTER_READ(idx+1, buf_sv, maxlen);
3846 if (filter_sub && len >= 0) {
3857 PUSHs(sv_2mortal(newSViv(maxlen)));
3859 PUSHs(filter_state);
3862 count = call_sv(filter_sub, G_SCALAR);
3878 IoLINES(datasv) = 0;
3879 if (filter_child_proc) {
3880 SvREFCNT_dec(filter_child_proc);
3881 IoFMT_GV(datasv) = Nullgv;
3884 SvREFCNT_dec(filter_state);
3885 IoTOP_GV(datasv) = Nullgv;
3888 SvREFCNT_dec(filter_sub);
3889 IoBOTTOM_GV(datasv) = Nullgv;
3891 filter_del(run_user_filter);
3897 /* perhaps someone can come up with a better name for
3898 this? it is not really "absolute", per se ... */
3900 S_path_is_absolute(pTHX_ char *name)
3902 if (PERL_FILE_IS_ABSOLUTE(name)
3903 #ifdef MACOS_TRADITIONAL
3906 || (*name == '.' && (name[1] == '/' ||
3907 (name[1] == '.' && name[2] == '/'))))