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 = utf8n_to_uvchr(s, send - s, &ulen, 0);
70 if (c < 0x100 && (ch = tbl[c]) >= 0) {
72 d = uvchr_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 = utf8n_to_uvchr(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_uvchr(s, &len);
216 ch = (rlen == 0) ? comp :
217 (comp - 0x100 < rlen) ?
218 tbl[comp+1] : tbl[0x100+rlen];
220 d = uvchr_to_utf8(d, ch);
228 else if ((ch = tbl[comp]) >= 0) {
231 d = uvchr_to_utf8(d, ch);
237 else if (ch == -1) { /* -1 is unmapped character */
241 else if (ch == -2) /* -2 is delete character */
250 UV comp = utf8_to_uvchr(s, &len);
259 if (comp - 0x100 < rlen)
260 d = uvchr_to_utf8(d, tbl[comp+1]);
262 d = uvchr_to_utf8(d, tbl[0x100+rlen]);
266 else if ((ch = tbl[comp]) >= 0) {
267 d = uvchr_to_utf8(d, ch);
270 else if (ch == -1) { /* -1 is unmapped character */
274 else if (ch == -2) /* -2 is delete character */
280 sv_setpvn(sv, (char*)dstart, d - dstart);
285 SvCUR_set(sv, d - dstart);
294 S_do_trans_simple_utf8(pTHX_ SV *sv)/* SPC - OK */
302 I32 grows = PL_op->op_private & OPpTRANS_GROWS;
305 SV* rv = (SV*)cSVOP->op_sv;
306 HV* hv = (HV*)SvRV(rv);
307 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
308 UV none = svp ? SvUV(*svp) : 0x7fffffff;
315 s = (U8*)SvPV(sv, len);
318 U8 *t = s, *e = s + len;
320 if ((hibit = !UTF8_IS_INVARIANT(*t++)))
323 s = bytes_to_utf8(s, &len);
328 svp = hv_fetch(hv, "FINAL", 5, FALSE);
333 /* d needs to be bigger than s, in case e.g. upgrading is required */
334 New(0, d, len*3+UTF8_MAXLEN, U8);
344 if ((uv = swash_fetch(rv, s)) < none) {
347 d = uvchr_to_utf8(d, uv);
349 else if (uv == none) {
355 else if (uv == extra) {
359 d = uvchr_to_utf8(d, final);
365 STRLEN clen = d - dstart;
366 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
368 Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
369 Renew(dstart, nlen+UTF8_MAXLEN, U8);
371 dend = dstart + nlen;
374 if (grows || hibit) {
375 sv_setpvn(sv, (char*)dstart, d - dstart);
382 SvCUR_set(sv, d - dstart);
386 /* Downgrading just 'cos it will is suspect - NI-S */
387 if (!isutf8 && !(PL_hints & HINT_UTF8))
388 sv_utf8_downgrade(sv, TRUE);
394 S_do_trans_count_utf8(pTHX_ SV *sv)/* SPC - OK */
401 SV* rv = (SV*)cSVOP->op_sv;
402 HV* hv = (HV*)SvRV(rv);
403 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
404 UV none = svp ? SvUV(*svp) : 0x7fffffff;
408 s = (U8*)SvPV(sv, len);
410 U8 *t = s, *e = s + len;
412 if ((hibit = !UTF8_IS_INVARIANT(*t++)))
415 start = s = bytes_to_utf8(s, &len);
420 if ((uv = swash_fetch(rv, s)) < none)
431 S_do_trans_complex_utf8(pTHX_ SV *sv) /* SPC - NOT OK */
437 I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
438 I32 del = PL_op->op_private & OPpTRANS_DELETE;
439 I32 grows = PL_op->op_private & OPpTRANS_GROWS;
440 SV* rv = (SV*)cSVOP->op_sv;
441 HV* hv = (HV*)SvRV(rv);
442 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
443 UV none = svp ? SvUV(*svp) : 0x7fffffff;
452 s = (U8*)SvPV(sv, len);
455 U8 *t = s, *e = s + len;
457 if ((hibit = !UTF8_IS_INVARIANT(*t++)))
460 s = bytes_to_utf8(s, &len);
465 svp = hv_fetch(hv, "FINAL", 5, FALSE);
470 /* d needs to be bigger than s, in case e.g. upgrading is required */
471 New(0, d, len*3+UTF8_MAXLEN, U8);
483 uv = swash_fetch(rv, s);
486 STRLEN clen = d - dstart;
487 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
489 Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
490 Renew(dstart, nlen+UTF8_MAXLEN, U8);
492 dend = dstart + nlen;
498 d = uvchr_to_utf8(d, uv);
503 else if (uv == none) { /* "none" is unmapped character */
511 else if (uv == extra && !del) {
515 d = uvchr_to_utf8(d, final);
520 matches++; /* "none+1" is delete character */
526 uv = swash_fetch(rv, s);
528 STRLEN clen = d - dstart;
529 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
531 Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
532 Renew(dstart, nlen+UTF8_MAXLEN, U8);
534 dend = dstart + nlen;
539 d = uvchr_to_utf8(d, uv);
542 else if (uv == none) { /* "none" is unmapped character */
549 else if (uv == extra && !del) {
552 d = uvchr_to_utf8(d, final);
555 matches++; /* "none+1" is delete character */
559 if (grows || hibit) {
560 sv_setpvn(sv, (char*)dstart, d - dstart);
567 SvCUR_set(sv, d - dstart);
570 if (!isutf8 && !(PL_hints & HINT_UTF8))
571 sv_utf8_downgrade(sv, TRUE);
578 Perl_do_trans(pTHX_ SV *sv)
581 I32 hasutf = (PL_op->op_private &
582 (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF));
584 if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL))
585 Perl_croak(aTHX_ PL_no_modify);
591 (void)SvPV_force(sv, len);
592 if (!(PL_op->op_private & OPpTRANS_IDENTICAL))
593 (void)SvPOK_only_UTF8(sv);
595 DEBUG_t( Perl_deb(aTHX_ "2.TBL\n"));
597 switch (PL_op->op_private & ~hasutf & 63) {
600 return do_trans_simple_utf8(sv);
602 return do_trans_simple(sv);
604 case OPpTRANS_IDENTICAL:
605 case OPpTRANS_IDENTICAL|OPpTRANS_COMPLEMENT:
607 return do_trans_count_utf8(sv);
609 return do_trans_count(sv);
613 return do_trans_complex_utf8(sv);
615 return do_trans_complex(sv);
620 Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp)
623 register I32 items = sp - mark;
626 register char *delim = SvPV(del, delimlen);
630 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
631 (void)SvUPGRADE(sv, SVt_PV);
632 if (SvLEN(sv) < len + items) { /* current length is way too short */
633 while (items-- > 0) {
634 if (*mark && !SvGAMAGIC(*mark) && SvOK(*mark)) {
640 SvGROW(sv, len + 1); /* so try to pre-extend */
656 for (; items > 0; items--,mark++) {
662 for (; items > 0; items--,mark++)
669 Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
672 char *pat = SvPV(*sarg, patlen);
673 bool do_taint = FALSE;
675 sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
681 /* currently converts input to bytes if possible, but doesn't sweat failure */
683 Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size)
686 unsigned char *s = (unsigned char *) SvPV(sv, srclen);
691 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
692 Perl_croak(aTHX_ "Illegal number of bits in vec");
695 (void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE);
697 offset *= size; /* turn into bit offset */
698 len = (offset + size + 7) / 8; /* required number of bytes */
703 offset >>= 3; /* turn into byte offset */
705 if (offset >= srclen)
708 retnum = (UV) s[offset] << 8;
710 else if (size == 32) {
711 if (offset >= srclen)
713 else if (offset + 1 >= srclen)
715 ((UV) s[offset ] << 24);
716 else if (offset + 2 >= srclen)
718 ((UV) s[offset ] << 24) +
719 ((UV) s[offset + 1] << 16);
722 ((UV) s[offset ] << 24) +
723 ((UV) s[offset + 1] << 16) +
724 ( s[offset + 2] << 8);
727 else if (size == 64) {
728 if (ckWARN(WARN_PORTABLE))
729 Perl_warner(aTHX_ WARN_PORTABLE,
730 "Bit vector size > 32 non-portable");
731 if (offset >= srclen)
733 else if (offset + 1 >= srclen)
735 (UV) s[offset ] << 56;
736 else if (offset + 2 >= srclen)
738 ((UV) s[offset ] << 56) +
739 ((UV) s[offset + 1] << 48);
740 else if (offset + 3 >= srclen)
742 ((UV) s[offset ] << 56) +
743 ((UV) s[offset + 1] << 48) +
744 ((UV) s[offset + 2] << 40);
745 else if (offset + 4 >= srclen)
747 ((UV) s[offset ] << 56) +
748 ((UV) s[offset + 1] << 48) +
749 ((UV) s[offset + 2] << 40) +
750 ((UV) s[offset + 3] << 32);
751 else if (offset + 5 >= srclen)
753 ((UV) s[offset ] << 56) +
754 ((UV) s[offset + 1] << 48) +
755 ((UV) s[offset + 2] << 40) +
756 ((UV) s[offset + 3] << 32) +
757 ( s[offset + 4] << 24);
758 else if (offset + 6 >= srclen)
760 ((UV) s[offset ] << 56) +
761 ((UV) s[offset + 1] << 48) +
762 ((UV) s[offset + 2] << 40) +
763 ((UV) s[offset + 3] << 32) +
764 ((UV) s[offset + 4] << 24) +
765 ((UV) s[offset + 5] << 16);
768 ((UV) s[offset ] << 56) +
769 ((UV) s[offset + 1] << 48) +
770 ((UV) s[offset + 2] << 40) +
771 ((UV) s[offset + 3] << 32) +
772 ((UV) s[offset + 4] << 24) +
773 ((UV) s[offset + 5] << 16) +
774 ( s[offset + 6] << 8);
780 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
782 offset >>= 3; /* turn into byte offset */
787 ((UV) s[offset] << 8) +
791 ((UV) s[offset ] << 24) +
792 ((UV) s[offset + 1] << 16) +
793 ( s[offset + 2] << 8) +
796 else if (size == 64) {
797 if (ckWARN(WARN_PORTABLE))
798 Perl_warner(aTHX_ WARN_PORTABLE,
799 "Bit vector size > 32 non-portable");
801 ((UV) s[offset ] << 56) +
802 ((UV) s[offset + 1] << 48) +
803 ((UV) s[offset + 2] << 40) +
804 ((UV) s[offset + 3] << 32) +
805 ((UV) s[offset + 4] << 24) +
806 ((UV) s[offset + 5] << 16) +
807 ( s[offset + 6] << 8) +
816 /* currently converts input to bytes if possible but doesn't sweat failures,
817 * although it does ensure that the string it clobbers is not marked as
818 * utf8-valid any more
821 Perl_do_vecset(pTHX_ SV *sv)
823 SV *targ = LvTARG(sv);
826 register unsigned char *s;
834 s = (unsigned char*)SvPV_force(targ, targlen);
836 /* This is handled by the SvPOK_only below...
837 if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE))
840 (void) Perl_sv_utf8_downgrade(aTHX_ targ, TRUE);
843 (void)SvPOK_only(targ);
845 offset = LvTARGOFF(sv);
847 Perl_croak(aTHX_ "Assigning to negative offset in vec");
848 size = LvTARGLEN(sv);
849 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
850 Perl_croak(aTHX_ "Illegal number of bits in vec");
852 offset *= size; /* turn into bit offset */
853 len = (offset + size + 7) / 8; /* required number of bytes */
855 s = (unsigned char*)SvGROW(targ, len + 1);
856 (void)memzero((char *)(s + targlen), len - targlen + 1);
857 SvCUR_set(targ, len);
861 mask = (1 << size) - 1;
864 offset >>= 3; /* turn into byte offset */
865 s[offset] &= ~(mask << size);
866 s[offset] |= lval << size;
869 offset >>= 3; /* turn into byte offset */
871 s[offset ] = lval & 0xff;
872 else if (size == 16) {
873 s[offset ] = (lval >> 8) & 0xff;
874 s[offset+1] = lval & 0xff;
876 else if (size == 32) {
877 s[offset ] = (lval >> 24) & 0xff;
878 s[offset+1] = (lval >> 16) & 0xff;
879 s[offset+2] = (lval >> 8) & 0xff;
880 s[offset+3] = lval & 0xff;
883 else if (size == 64) {
884 if (ckWARN(WARN_PORTABLE))
885 Perl_warner(aTHX_ WARN_PORTABLE,
886 "Bit vector size > 32 non-portable");
887 s[offset ] = (lval >> 56) & 0xff;
888 s[offset+1] = (lval >> 48) & 0xff;
889 s[offset+2] = (lval >> 40) & 0xff;
890 s[offset+3] = (lval >> 32) & 0xff;
891 s[offset+4] = (lval >> 24) & 0xff;
892 s[offset+5] = (lval >> 16) & 0xff;
893 s[offset+6] = (lval >> 8) & 0xff;
894 s[offset+7] = lval & 0xff;
902 Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
907 if (SvTYPE(sv) == SVt_PVAV) {
912 for (i = 0; i <= max; i++) {
913 sv = (SV*)av_fetch(av, i, FALSE);
914 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
919 else if (SvTYPE(sv) == SVt_PVHV) {
922 (void)hv_iterinit(hv);
924 while ((entry = hv_iternext(hv)))
925 do_chop(astr,hv_iterval(hv,entry));
928 else if (SvREADONLY(sv))
929 Perl_croak(aTHX_ PL_no_modify);
931 if (len && !SvPOK(sv))
932 s = SvPV_force(sv, len);
935 char *send = s + len;
938 while (s > start && UTF8_IS_CONTINUATION(*s))
940 if (utf8_to_uvchr((U8*)s, 0)) {
941 sv_setpvn(astr, s, send - s);
943 SvCUR_set(sv, s - start);
949 sv_setpvn(astr, "", 0);
953 sv_setpvn(astr, s, 1);
960 sv_setpvn(astr, "", 0);
965 Perl_do_chomp(pTHX_ register SV *sv)
976 if (SvTYPE(sv) == SVt_PVAV) {
981 for (i = 0; i <= max; i++) {
982 sv = (SV*)av_fetch(av, i, FALSE);
983 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
984 count += do_chomp(sv);
988 else if (SvTYPE(sv) == SVt_PVHV) {
991 (void)hv_iterinit(hv);
993 while ((entry = hv_iternext(hv)))
994 count += do_chomp(hv_iterval(hv,entry));
997 else if (SvREADONLY(sv))
998 Perl_croak(aTHX_ PL_no_modify);
1000 if (len && !SvPOKp(sv))
1001 s = SvPV_force(sv, len);
1004 if (RsPARA(PL_rs)) {
1008 while (len && s[-1] == '\n') {
1016 char *rsptr = SvPV(PL_rs, rslen);
1023 if (len < rslen - 1)
1027 if (memNE(s, rsptr, rslen))
1042 Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
1058 bool left_utf = DO_UTF8(left);
1059 bool right_utf = DO_UTF8(right);
1062 if (left_utf && !right_utf)
1063 sv_utf8_upgrade(right);
1064 else if (!left_utf && right_utf)
1065 sv_utf8_upgrade(left);
1067 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
1068 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
1069 lsave = lc = SvPV(left, leftlen);
1070 rsave = rc = SvPV(right, rightlen);
1071 len = leftlen < rightlen ? leftlen : rightlen;
1073 if ((left_utf || right_utf) && (sv == left || sv == right)) {
1074 needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
1075 Newz(801, dc, needlen + 1, char);
1077 else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
1079 dc = SvPV_force(sv, n_a);
1080 if (SvCUR(sv) < len) {
1081 dc = SvGROW(sv, len + 1);
1082 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
1084 if (optype != OP_BIT_AND && (left_utf || right_utf))
1085 dc = SvGROW(sv, leftlen + rightlen + 1);
1088 needlen = ((optype == OP_BIT_AND)
1089 ? len : (leftlen > rightlen ? leftlen : rightlen));
1090 Newz(801, dc, needlen + 1, char);
1091 (void)sv_usepvn(sv, dc, needlen);
1092 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
1095 (void)SvPOK_only(sv);
1096 if (left_utf || right_utf) {
1099 STRLEN lulen = leftlen;
1100 STRLEN rulen = rightlen;
1105 while (lulen && rulen) {
1106 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1109 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1113 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1115 if (sv == left || sv == right)
1116 (void)sv_usepvn(sv, dcsave, needlen);
1117 SvCUR_set(sv, dc - dcsave);
1120 while (lulen && rulen) {
1121 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1124 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1128 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1132 while (lulen && rulen) {
1133 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1136 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1140 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1143 if (sv == left || sv == right)
1144 (void)sv_usepvn(sv, dcsave, needlen);
1145 SvCUR_set(sv, dc - dcsave);
1147 sv_catpvn(sv, rc, rulen);
1149 sv_catpvn(sv, lc, lulen);
1159 if (len >= sizeof(long)*4 &&
1160 !((long)dc % sizeof(long)) &&
1161 !((long)lc % sizeof(long)) &&
1162 !((long)rc % sizeof(long))) /* It's almost always aligned... */
1164 I32 remainder = len % (sizeof(long)*4);
1165 len /= (sizeof(long)*4);
1174 *dl++ = *ll++ & *rl++;
1175 *dl++ = *ll++ & *rl++;
1176 *dl++ = *ll++ & *rl++;
1177 *dl++ = *ll++ & *rl++;
1182 *dl++ = *ll++ ^ *rl++;
1183 *dl++ = *ll++ ^ *rl++;
1184 *dl++ = *ll++ ^ *rl++;
1185 *dl++ = *ll++ ^ *rl++;
1190 *dl++ = *ll++ | *rl++;
1191 *dl++ = *ll++ | *rl++;
1192 *dl++ = *ll++ | *rl++;
1193 *dl++ = *ll++ | *rl++;
1208 *dc++ = *lc++ & *rc++;
1212 *dc++ = *lc++ ^ *rc++;
1216 *dc++ = *lc++ | *rc++;
1220 sv_catpvn(sv, rsave + len, rightlen - len);
1221 else if (leftlen > len)
1222 sv_catpvn(sv, lsave + len, leftlen - len);
1240 I32 gimme = GIMME_V;
1241 I32 dokeys = (PL_op->op_type == OP_KEYS);
1242 I32 dovalues = (PL_op->op_type == OP_VALUES);
1243 I32 realhv = (SvTYPE(hv) == SVt_PVHV);
1245 if (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV)
1246 dokeys = dovalues = TRUE;
1249 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1250 dTARGET; /* make sure to clear its target here */
1251 if (SvTYPE(TARG) == SVt_PVLV)
1252 LvTARG(TARG) = Nullsv;
1258 keys = realhv ? hv : avhv_keys((AV*)hv);
1259 (void)hv_iterinit(keys); /* always reset iterator regardless */
1261 if (gimme == G_VOID)
1264 if (gimme == G_SCALAR) {
1268 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1269 if (SvTYPE(TARG) < SVt_PVLV) {
1270 sv_upgrade(TARG, SVt_PVLV);
1271 sv_magic(TARG, Nullsv, 'k', Nullch, 0);
1274 if (LvTARG(TARG) != (SV*)keys) {
1276 SvREFCNT_dec(LvTARG(TARG));
1277 LvTARG(TARG) = SvREFCNT_inc(keys);
1283 if (! SvTIED_mg((SV*)keys, 'P'))
1288 while (hv_iternext(keys)) i++;
1294 EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
1296 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
1297 while ((entry = hv_iternext(keys))) {
1300 XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
1304 hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry);
1305 DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
1306 (unsigned long)HeHASH(entry),
1308 (unsigned long)(HeHASH(entry) & HvMAX(keys))));