3 * Copyright (c) 1991-2001, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "'So that was the job I felt I had to do when I started,' thought Sam."
15 #define PERL_IN_DOOP_C
19 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
25 S_do_trans_simple(pTHX_ SV *sv)
32 I32 grows = PL_op->op_private & OPpTRANS_GROWS;
37 tbl = (short*)cPVOP->op_pv;
39 Perl_croak(aTHX_ "panic: do_trans_simple");
41 s = (U8*)SvPV(sv, len);
44 /* First, take care of non-UTF8 input strings, because they're easy */
47 if ((ch = tbl[*s]) >= 0) {
58 /* Allow for expansion: $_="a".chr(400); tr/a/\xFE/, FE needs encoding */
60 New(0, d, len*2+1, U8);
68 /* Need to check this, otherwise 128..255 won't match */
69 c = utf8_to_uv(s, send - s, &ulen, 0);
70 if (c < 0x100 && (ch = tbl[c]) >= 0) {
72 d = uv_to_utf8(d, ch);
75 else { /* No match -> copy */
82 sv_setpvn(sv, (char*)dstart, d - dstart);
87 SvCUR_set(sv, d - dstart);
95 S_do_trans_count(pTHX_ SV *sv)/* SPC - OK */
102 I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT;
104 tbl = (short*)cPVOP->op_pv;
106 Perl_croak(aTHX_ "panic: do_trans_count");
108 s = (U8*)SvPV(sv, len);
120 c = utf8_to_uv(s, send - s, &ulen, 0);
124 } else if (complement)
133 S_do_trans_complex(pTHX_ SV *sv)/* SPC - NOT OK */
141 I32 grows = PL_op->op_private & OPpTRANS_GROWS;
142 I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT;
143 I32 del = PL_op->op_private & OPpTRANS_DELETE;
148 tbl = (short*)cPVOP->op_pv;
150 Perl_croak(aTHX_ "panic: do_trans_complex");
152 s = (U8*)SvPV(sv, len);
158 if (PL_op->op_private & OPpTRANS_SQUASH) {
161 if ((ch = tbl[*s]) >= 0) {
164 if (p != d - 1 || *p != *d)
167 else if (ch == -1) /* -1 is unmapped character */
169 else if (ch == -2) /* -2 is delete character */
176 if ((ch = tbl[*s]) >= 0) {
180 else if (ch == -1) /* -1 is unmapped character */
182 else if (ch == -2) /* -2 is delete character */
187 SvCUR_set(sv, d - dstart);
191 New(0, d, len*2+1, U8);
195 if (complement && !del)
198 #ifdef MACOS_TRADITIONAL
199 #define comp CoMP /* "comp" is a keyword in some compilers ... */
202 if (PL_op->op_private & OPpTRANS_SQUASH) {
206 UV comp = utf8_to_uv_simple(s, &len);
216 ch = (comp - 0x100 < rlen) ?
217 tbl[comp+1] : tbl[0x100+rlen];
219 d = uv_to_utf8(d, ch);
227 else if ((ch = tbl[comp]) >= 0) {
230 d = uv_to_utf8(d, ch);
236 else if (ch == -1) { /* -1 is unmapped character */
240 else if (ch == -2) /* -2 is delete character */
249 UV comp = utf8_to_uv_simple(s, &len);
258 if (comp - 0x100 < rlen)
259 d = uv_to_utf8(d, tbl[comp+1]);
261 d = uv_to_utf8(d, tbl[0x100+rlen]);
265 else if ((ch = tbl[comp]) >= 0) {
266 d = uv_to_utf8(d, ch);
269 else if (ch == -1) { /* -1 is unmapped character */
273 else if (ch == -2) /* -2 is delete character */
279 sv_setpvn(sv, (char*)dstart, d - dstart);
284 SvCUR_set(sv, d - dstart);
293 S_do_trans_simple_utf8(pTHX_ SV *sv)/* SPC - OK */
301 I32 grows = PL_op->op_private & OPpTRANS_GROWS;
304 SV* rv = (SV*)cSVOP->op_sv;
305 HV* hv = (HV*)SvRV(rv);
306 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
307 UV none = svp ? SvUV(*svp) : 0x7fffffff;
314 s = (U8*)SvPV(sv, len);
317 U8 *t = s, *e = s + len;
319 if ((hibit = UTF8_IS_CONTINUED(*t++)))
322 s = bytes_to_utf8(s, &len);
327 svp = hv_fetch(hv, "FINAL", 5, FALSE);
332 /* d needs to be bigger than s, in case e.g. upgrading is required */
333 New(0, d, len*3+UTF8_MAXLEN, U8);
343 if ((uv = swash_fetch(rv, s)) < none) {
346 d = uv_to_utf8(d, uv);
348 else if (uv == none) {
354 else if (uv == extra) {
358 d = uv_to_utf8(d, final);
364 STRLEN clen = d - dstart;
365 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
367 Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
368 Renew(dstart, nlen+UTF8_MAXLEN, U8);
370 dend = dstart + nlen;
373 if (grows || hibit) {
374 sv_setpvn(sv, (char*)dstart, d - dstart);
381 SvCUR_set(sv, d - dstart);
385 if (!isutf8 && !(PL_hints & HINT_UTF8))
386 sv_utf8_downgrade(sv, TRUE);
392 S_do_trans_count_utf8(pTHX_ SV *sv)/* SPC - OK */
399 SV* rv = (SV*)cSVOP->op_sv;
400 HV* hv = (HV*)SvRV(rv);
401 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
402 UV none = svp ? SvUV(*svp) : 0x7fffffff;
406 s = (U8*)SvPV(sv, len);
408 U8 *t = s, *e = s + len;
410 if ((hibit = !UTF8_IS_ASCII(*t++)))
413 start = s = bytes_to_utf8(s, &len);
418 if ((uv = swash_fetch(rv, s)) < none)
429 S_do_trans_complex_utf8(pTHX_ SV *sv) /* SPC - NOT OK */
435 I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
436 I32 del = PL_op->op_private & OPpTRANS_DELETE;
437 I32 grows = PL_op->op_private & OPpTRANS_GROWS;
438 SV* rv = (SV*)cSVOP->op_sv;
439 HV* hv = (HV*)SvRV(rv);
440 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
441 UV none = svp ? SvUV(*svp) : 0x7fffffff;
450 s = (U8*)SvPV(sv, len);
453 U8 *t = s, *e = s + len;
455 if ((hibit = !UTF8_IS_ASCII(*t++)))
458 s = bytes_to_utf8(s, &len);
463 svp = hv_fetch(hv, "FINAL", 5, FALSE);
468 /* d needs to be bigger than s, in case e.g. upgrading is required */
469 New(0, d, len*3+UTF8_MAXLEN, U8);
481 uv = swash_fetch(rv, s);
484 STRLEN clen = d - dstart;
485 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
487 Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
488 Renew(dstart, nlen+UTF8_MAXLEN, U8);
490 dend = dstart + nlen;
496 d = uv_to_utf8(d, uv);
501 else if (uv == none) { /* "none" is unmapped character */
509 else if (uv == extra && !del) {
513 d = uv_to_utf8(d, final);
518 matches++; /* "none+1" is delete character */
524 uv = swash_fetch(rv, s);
526 STRLEN clen = d - dstart;
527 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
529 Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
530 Renew(dstart, nlen+UTF8_MAXLEN, U8);
532 dend = dstart + nlen;
537 d = uv_to_utf8(d, uv);
540 else if (uv == none) { /* "none" is unmapped character */
547 else if (uv == extra && !del) {
550 d = uv_to_utf8(d, final);
553 matches++; /* "none+1" is delete character */
557 if (grows || hibit) {
558 sv_setpvn(sv, (char*)dstart, d - dstart);
565 SvCUR_set(sv, d - dstart);
568 if (!isutf8 && !(PL_hints & HINT_UTF8))
569 sv_utf8_downgrade(sv, TRUE);
576 Perl_do_trans(pTHX_ SV *sv)
579 I32 hasutf = (PL_op->op_private &
580 (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF));
582 if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL))
583 Perl_croak(aTHX_ PL_no_modify);
589 (void)SvPV_force(sv, len);
590 if (!(PL_op->op_private & OPpTRANS_IDENTICAL))
591 (void)SvPOK_only_UTF8(sv);
593 DEBUG_t( Perl_deb(aTHX_ "2.TBL\n"));
595 switch (PL_op->op_private & ~hasutf & 63) {
598 return do_trans_simple_utf8(sv);
600 return do_trans_simple(sv);
602 case OPpTRANS_IDENTICAL:
604 return do_trans_count_utf8(sv);
606 return do_trans_count(sv);
610 return do_trans_complex_utf8(sv);
612 return do_trans_complex(sv);
617 Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp)
620 register I32 items = sp - mark;
623 register char *delim = SvPV(del, delimlen);
627 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
628 (void)SvUPGRADE(sv, SVt_PV);
629 if (SvLEN(sv) < len + items) { /* current length is way too short */
630 while (items-- > 0) {
631 if (*mark && !SvGAMAGIC(*mark) && SvOK(*mark)) {
637 SvGROW(sv, len + 1); /* so try to pre-extend */
653 for (; items > 0; items--,mark++) {
659 for (; items > 0; items--,mark++)
666 Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
669 char *pat = SvPV(*sarg, patlen);
670 bool do_taint = FALSE;
672 sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
678 /* currently converts input to bytes if possible, but doesn't sweat failure */
680 Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size)
683 unsigned char *s = (unsigned char *) SvPV(sv, srclen);
688 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
689 Perl_croak(aTHX_ "Illegal number of bits in vec");
692 (void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE);
694 offset *= size; /* turn into bit offset */
695 len = (offset + size + 7) / 8; /* required number of bytes */
700 offset >>= 3; /* turn into byte offset */
702 if (offset >= srclen)
705 retnum = (UV) s[offset] << 8;
707 else if (size == 32) {
708 if (offset >= srclen)
710 else if (offset + 1 >= srclen)
712 ((UV) s[offset ] << 24);
713 else if (offset + 2 >= srclen)
715 ((UV) s[offset ] << 24) +
716 ((UV) s[offset + 1] << 16);
719 ((UV) s[offset ] << 24) +
720 ((UV) s[offset + 1] << 16) +
721 ( s[offset + 2] << 8);
724 else if (size == 64) {
725 if (ckWARN(WARN_PORTABLE))
726 Perl_warner(aTHX_ WARN_PORTABLE,
727 "Bit vector size > 32 non-portable");
728 if (offset >= srclen)
730 else if (offset + 1 >= srclen)
732 (UV) s[offset ] << 56;
733 else if (offset + 2 >= srclen)
735 ((UV) s[offset ] << 56) +
736 ((UV) s[offset + 1] << 48);
737 else if (offset + 3 >= srclen)
739 ((UV) s[offset ] << 56) +
740 ((UV) s[offset + 1] << 48) +
741 ((UV) s[offset + 2] << 40);
742 else if (offset + 4 >= srclen)
744 ((UV) s[offset ] << 56) +
745 ((UV) s[offset + 1] << 48) +
746 ((UV) s[offset + 2] << 40) +
747 ((UV) s[offset + 3] << 32);
748 else if (offset + 5 >= srclen)
750 ((UV) s[offset ] << 56) +
751 ((UV) s[offset + 1] << 48) +
752 ((UV) s[offset + 2] << 40) +
753 ((UV) s[offset + 3] << 32) +
754 ( s[offset + 4] << 24);
755 else if (offset + 6 >= srclen)
757 ((UV) s[offset ] << 56) +
758 ((UV) s[offset + 1] << 48) +
759 ((UV) s[offset + 2] << 40) +
760 ((UV) s[offset + 3] << 32) +
761 ((UV) s[offset + 4] << 24) +
762 ((UV) s[offset + 5] << 16);
765 ((UV) s[offset ] << 56) +
766 ((UV) s[offset + 1] << 48) +
767 ((UV) s[offset + 2] << 40) +
768 ((UV) s[offset + 3] << 32) +
769 ((UV) s[offset + 4] << 24) +
770 ((UV) s[offset + 5] << 16) +
771 ( s[offset + 6] << 8);
777 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
779 offset >>= 3; /* turn into byte offset */
784 ((UV) s[offset] << 8) +
788 ((UV) s[offset ] << 24) +
789 ((UV) s[offset + 1] << 16) +
790 ( s[offset + 2] << 8) +
793 else if (size == 64) {
794 if (ckWARN(WARN_PORTABLE))
795 Perl_warner(aTHX_ WARN_PORTABLE,
796 "Bit vector size > 32 non-portable");
798 ((UV) s[offset ] << 56) +
799 ((UV) s[offset + 1] << 48) +
800 ((UV) s[offset + 2] << 40) +
801 ((UV) s[offset + 3] << 32) +
802 ((UV) s[offset + 4] << 24) +
803 ((UV) s[offset + 5] << 16) +
804 ( s[offset + 6] << 8) +
813 /* currently converts input to bytes if possible but doesn't sweat failures,
814 * although it does ensure that the string it clobbers is not marked as
815 * utf8-valid any more
818 Perl_do_vecset(pTHX_ SV *sv)
820 SV *targ = LvTARG(sv);
823 register unsigned char *s;
831 s = (unsigned char*)SvPV_force(targ, targlen);
833 /* This is handled by the SvPOK_only below...
834 if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE))
837 (void) Perl_sv_utf8_downgrade(aTHX_ targ, TRUE);
840 (void)SvPOK_only(targ);
842 offset = LvTARGOFF(sv);
844 Perl_croak(aTHX_ "Assigning to negative offset in vec");
845 size = LvTARGLEN(sv);
846 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
847 Perl_croak(aTHX_ "Illegal number of bits in vec");
849 offset *= size; /* turn into bit offset */
850 len = (offset + size + 7) / 8; /* required number of bytes */
852 s = (unsigned char*)SvGROW(targ, len + 1);
853 (void)memzero((char *)(s + targlen), len - targlen + 1);
854 SvCUR_set(targ, len);
858 mask = (1 << size) - 1;
861 offset >>= 3; /* turn into byte offset */
862 s[offset] &= ~(mask << size);
863 s[offset] |= lval << size;
866 offset >>= 3; /* turn into byte offset */
868 s[offset ] = lval & 0xff;
869 else if (size == 16) {
870 s[offset ] = (lval >> 8) & 0xff;
871 s[offset+1] = lval & 0xff;
873 else if (size == 32) {
874 s[offset ] = (lval >> 24) & 0xff;
875 s[offset+1] = (lval >> 16) & 0xff;
876 s[offset+2] = (lval >> 8) & 0xff;
877 s[offset+3] = lval & 0xff;
880 else if (size == 64) {
881 if (ckWARN(WARN_PORTABLE))
882 Perl_warner(aTHX_ WARN_PORTABLE,
883 "Bit vector size > 32 non-portable");
884 s[offset ] = (lval >> 56) & 0xff;
885 s[offset+1] = (lval >> 48) & 0xff;
886 s[offset+2] = (lval >> 40) & 0xff;
887 s[offset+3] = (lval >> 32) & 0xff;
888 s[offset+4] = (lval >> 24) & 0xff;
889 s[offset+5] = (lval >> 16) & 0xff;
890 s[offset+6] = (lval >> 8) & 0xff;
891 s[offset+7] = lval & 0xff;
899 Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
904 if (SvTYPE(sv) == SVt_PVAV) {
909 for (i = 0; i <= max; i++) {
910 sv = (SV*)av_fetch(av, i, FALSE);
911 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
916 else if (SvTYPE(sv) == SVt_PVHV) {
919 (void)hv_iterinit(hv);
921 while ((entry = hv_iternext(hv)))
922 do_chop(astr,hv_iterval(hv,entry));
925 else if (SvREADONLY(sv))
926 Perl_croak(aTHX_ PL_no_modify);
928 if (len && !SvPOK(sv))
929 s = SvPV_force(sv, len);
932 char *send = s + len;
935 while (s > start && UTF8_IS_CONTINUATION(*s))
937 if (utf8_to_uv_simple((U8*)s, 0)) {
938 sv_setpvn(astr, s, send - s);
940 SvCUR_set(sv, s - start);
946 sv_setpvn(astr, "", 0);
950 sv_setpvn(astr, s, 1);
957 sv_setpvn(astr, "", 0);
962 Perl_do_chomp(pTHX_ register SV *sv)
973 if (SvTYPE(sv) == SVt_PVAV) {
978 for (i = 0; i <= max; i++) {
979 sv = (SV*)av_fetch(av, i, FALSE);
980 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
981 count += do_chomp(sv);
985 else if (SvTYPE(sv) == SVt_PVHV) {
988 (void)hv_iterinit(hv);
990 while ((entry = hv_iternext(hv)))
991 count += do_chomp(hv_iterval(hv,entry));
994 else if (SvREADONLY(sv))
995 Perl_croak(aTHX_ PL_no_modify);
997 if (len && !SvPOKp(sv))
998 s = SvPV_force(sv, len);
1001 if (RsPARA(PL_rs)) {
1005 while (len && s[-1] == '\n') {
1013 char *rsptr = SvPV(PL_rs, rslen);
1020 if (len < rslen - 1)
1024 if (memNE(s, rsptr, rslen))
1039 Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
1055 bool left_utf = DO_UTF8(left);
1056 bool right_utf = DO_UTF8(right);
1059 if (left_utf && !right_utf)
1060 sv_utf8_upgrade(right);
1061 else if (!left_utf && right_utf)
1062 sv_utf8_upgrade(left);
1064 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
1065 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
1066 lsave = lc = SvPV(left, leftlen);
1067 rsave = rc = SvPV(right, rightlen);
1068 len = leftlen < rightlen ? leftlen : rightlen;
1070 if ((left_utf || right_utf) && (sv == left || sv == right)) {
1071 needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
1072 Newz(801, dc, needlen + 1, char);
1074 else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
1076 dc = SvPV_force(sv, n_a);
1077 if (SvCUR(sv) < len) {
1078 dc = SvGROW(sv, len + 1);
1079 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
1081 if (optype != OP_BIT_AND && (left_utf || right_utf))
1082 dc = SvGROW(sv, leftlen + rightlen + 1);
1085 needlen = ((optype == OP_BIT_AND)
1086 ? len : (leftlen > rightlen ? leftlen : rightlen));
1087 Newz(801, dc, needlen + 1, char);
1088 (void)sv_usepvn(sv, dc, needlen);
1089 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
1092 (void)SvPOK_only(sv);
1093 if (left_utf || right_utf) {
1096 STRLEN lulen = leftlen;
1097 STRLEN rulen = rightlen;
1102 while (lulen && rulen) {
1103 luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1106 ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1110 dc = (char*)uv_to_utf8((U8*)dc, duc);
1112 if (sv == left || sv == right)
1113 (void)sv_usepvn(sv, dcsave, needlen);
1114 SvCUR_set(sv, dc - dcsave);
1117 while (lulen && rulen) {
1118 luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1121 ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1125 dc = (char*)uv_to_utf8((U8*)dc, duc);
1129 while (lulen && rulen) {
1130 luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1133 ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1137 dc = (char*)uv_to_utf8((U8*)dc, duc);
1140 if (sv == left || sv == right)
1141 (void)sv_usepvn(sv, dcsave, needlen);
1142 SvCUR_set(sv, dc - dcsave);
1144 sv_catpvn(sv, rc, rulen);
1146 sv_catpvn(sv, lc, lulen);
1156 if (len >= sizeof(long)*4 &&
1157 !((long)dc % sizeof(long)) &&
1158 !((long)lc % sizeof(long)) &&
1159 !((long)rc % sizeof(long))) /* It's almost always aligned... */
1161 I32 remainder = len % (sizeof(long)*4);
1162 len /= (sizeof(long)*4);
1171 *dl++ = *ll++ & *rl++;
1172 *dl++ = *ll++ & *rl++;
1173 *dl++ = *ll++ & *rl++;
1174 *dl++ = *ll++ & *rl++;
1179 *dl++ = *ll++ ^ *rl++;
1180 *dl++ = *ll++ ^ *rl++;
1181 *dl++ = *ll++ ^ *rl++;
1182 *dl++ = *ll++ ^ *rl++;
1187 *dl++ = *ll++ | *rl++;
1188 *dl++ = *ll++ | *rl++;
1189 *dl++ = *ll++ | *rl++;
1190 *dl++ = *ll++ | *rl++;
1205 *dc++ = *lc++ & *rc++;
1209 *dc++ = *lc++ ^ *rc++;
1213 *dc++ = *lc++ | *rc++;
1217 sv_catpvn(sv, rsave + len, rightlen - len);
1218 else if (leftlen > len)
1219 sv_catpvn(sv, lsave + len, leftlen - len);
1237 I32 gimme = GIMME_V;
1238 I32 dokeys = (PL_op->op_type == OP_KEYS);
1239 I32 dovalues = (PL_op->op_type == OP_VALUES);
1240 I32 realhv = (SvTYPE(hv) == SVt_PVHV);
1242 if (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV)
1243 dokeys = dovalues = TRUE;
1246 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1247 dTARGET; /* make sure to clear its target here */
1248 if (SvTYPE(TARG) == SVt_PVLV)
1249 LvTARG(TARG) = Nullsv;
1255 keys = realhv ? hv : avhv_keys((AV*)hv);
1256 (void)hv_iterinit(keys); /* always reset iterator regardless */
1258 if (gimme == G_VOID)
1261 if (gimme == G_SCALAR) {
1265 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1266 if (SvTYPE(TARG) < SVt_PVLV) {
1267 sv_upgrade(TARG, SVt_PVLV);
1268 sv_magic(TARG, Nullsv, 'k', Nullch, 0);
1271 if (LvTARG(TARG) != (SV*)keys) {
1273 SvREFCNT_dec(LvTARG(TARG));
1274 LvTARG(TARG) = SvREFCNT_inc(keys);
1280 if (! SvTIED_mg((SV*)keys, 'P'))
1285 while (hv_iternext(keys)) i++;
1291 EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
1293 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
1294 while ((entry = hv_iternext(keys))) {
1297 XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
1301 hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry);
1302 DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
1303 (unsigned long)HeHASH(entry),
1305 (unsigned long)(HeHASH(entry) & HvMAX(keys))));