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;
321 if ((hibit = !NATIVE_IS_INVARIANT(ch)))
325 s = bytes_to_utf8(s, &len);
330 svp = hv_fetch(hv, "FINAL", 5, FALSE);
335 /* d needs to be bigger than s, in case e.g. upgrading is required */
336 New(0, d, len*3+UTF8_MAXLEN, U8);
346 if ((uv = swash_fetch(rv, s)) < none) {
349 d = uvchr_to_utf8(d, uv);
351 else if (uv == none) {
357 else if (uv == extra) {
361 d = uvchr_to_utf8(d, final);
367 STRLEN clen = d - dstart;
368 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
370 Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
371 Renew(dstart, nlen+UTF8_MAXLEN, U8);
373 dend = dstart + nlen;
376 if (grows || hibit) {
377 sv_setpvn(sv, (char*)dstart, d - dstart);
384 SvCUR_set(sv, d - dstart);
388 /* Downgrading just 'cos it will is suspect - NI-S */
389 if (!isutf8 && !(PL_hints & HINT_UTF8))
390 sv_utf8_downgrade(sv, TRUE);
396 S_do_trans_count_utf8(pTHX_ SV *sv)/* SPC - OK */
403 SV* rv = (SV*)cSVOP->op_sv;
404 HV* hv = (HV*)SvRV(rv);
405 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
406 UV none = svp ? SvUV(*svp) : 0x7fffffff;
410 s = (U8*)SvPV(sv, len);
412 U8 *t = s, *e = s + len;
415 if ((hibit = !NATIVE_IS_INVARIANT(ch)))
419 start = s = bytes_to_utf8(s, &len);
424 if ((uv = swash_fetch(rv, s)) < none)
435 S_do_trans_complex_utf8(pTHX_ SV *sv) /* SPC - NOT OK */
441 I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
442 I32 del = PL_op->op_private & OPpTRANS_DELETE;
443 I32 grows = PL_op->op_private & OPpTRANS_GROWS;
444 SV* rv = (SV*)cSVOP->op_sv;
445 HV* hv = (HV*)SvRV(rv);
446 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
447 UV none = svp ? SvUV(*svp) : 0x7fffffff;
456 s = (U8*)SvPV(sv, len);
459 U8 *t = s, *e = s + len;
462 if ((hibit = !NATIVE_IS_INVARIANT(ch)))
466 s = bytes_to_utf8(s, &len);
471 svp = hv_fetch(hv, "FINAL", 5, FALSE);
476 /* d needs to be bigger than s, in case e.g. upgrading is required */
477 New(0, d, len*3+UTF8_MAXLEN, U8);
489 uv = swash_fetch(rv, s);
492 STRLEN clen = d - dstart;
493 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
495 Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
496 Renew(dstart, nlen+UTF8_MAXLEN, U8);
498 dend = dstart + nlen;
504 d = uvchr_to_utf8(d, uv);
509 else if (uv == none) { /* "none" is unmapped character */
517 else if (uv == extra && !del) {
521 d = uvchr_to_utf8(d, final);
526 matches++; /* "none+1" is delete character */
532 uv = swash_fetch(rv, s);
534 STRLEN clen = d - dstart;
535 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
537 Perl_croak(aTHX_ "panic: do_trans_complex_utf8");
538 Renew(dstart, nlen+UTF8_MAXLEN, U8);
540 dend = dstart + nlen;
545 d = uvchr_to_utf8(d, uv);
548 else if (uv == none) { /* "none" is unmapped character */
555 else if (uv == extra && !del) {
558 d = uvchr_to_utf8(d, final);
561 matches++; /* "none+1" is delete character */
565 if (grows || hibit) {
566 sv_setpvn(sv, (char*)dstart, d - dstart);
573 SvCUR_set(sv, d - dstart);
576 if (!isutf8 && !(PL_hints & HINT_UTF8))
577 sv_utf8_downgrade(sv, TRUE);
584 Perl_do_trans(pTHX_ SV *sv)
587 I32 hasutf = (PL_op->op_private &
588 (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF));
590 if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL))
591 Perl_croak(aTHX_ PL_no_modify);
597 (void)SvPV_force(sv, len);
598 if (!(PL_op->op_private & OPpTRANS_IDENTICAL))
599 (void)SvPOK_only_UTF8(sv);
601 DEBUG_t( Perl_deb(aTHX_ "2.TBL\n"));
603 switch (PL_op->op_private & ~hasutf & 63) {
606 return do_trans_simple_utf8(sv);
608 return do_trans_simple(sv);
610 case OPpTRANS_IDENTICAL:
611 case OPpTRANS_IDENTICAL|OPpTRANS_COMPLEMENT:
613 return do_trans_count_utf8(sv);
615 return do_trans_count(sv);
619 return do_trans_complex_utf8(sv);
621 return do_trans_complex(sv);
626 Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp)
629 register I32 items = sp - mark;
632 register char *delim = SvPV(del, delimlen);
636 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
637 (void)SvUPGRADE(sv, SVt_PV);
638 if (SvLEN(sv) < len + items) { /* current length is way too short */
639 while (items-- > 0) {
640 if (*mark && !SvGAMAGIC(*mark) && SvOK(*mark)) {
646 SvGROW(sv, len + 1); /* so try to pre-extend */
662 for (; items > 0; items--,mark++) {
668 for (; items > 0; items--,mark++)
675 Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
678 char *pat = SvPV(*sarg, patlen);
679 bool do_taint = FALSE;
681 sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
687 /* currently converts input to bytes if possible, but doesn't sweat failure */
689 Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size)
692 unsigned char *s = (unsigned char *) SvPV(sv, srclen);
697 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
698 Perl_croak(aTHX_ "Illegal number of bits in vec");
701 (void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE);
703 offset *= size; /* turn into bit offset */
704 len = (offset + size + 7) / 8; /* required number of bytes */
709 offset >>= 3; /* turn into byte offset */
711 if (offset >= srclen)
714 retnum = (UV) s[offset] << 8;
716 else if (size == 32) {
717 if (offset >= srclen)
719 else if (offset + 1 >= srclen)
721 ((UV) s[offset ] << 24);
722 else if (offset + 2 >= srclen)
724 ((UV) s[offset ] << 24) +
725 ((UV) s[offset + 1] << 16);
728 ((UV) s[offset ] << 24) +
729 ((UV) s[offset + 1] << 16) +
730 ( s[offset + 2] << 8);
733 else if (size == 64) {
734 if (ckWARN(WARN_PORTABLE))
735 Perl_warner(aTHX_ WARN_PORTABLE,
736 "Bit vector size > 32 non-portable");
737 if (offset >= srclen)
739 else if (offset + 1 >= srclen)
741 (UV) s[offset ] << 56;
742 else if (offset + 2 >= srclen)
744 ((UV) s[offset ] << 56) +
745 ((UV) s[offset + 1] << 48);
746 else if (offset + 3 >= srclen)
748 ((UV) s[offset ] << 56) +
749 ((UV) s[offset + 1] << 48) +
750 ((UV) s[offset + 2] << 40);
751 else if (offset + 4 >= 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 else if (offset + 5 >= srclen)
759 ((UV) s[offset ] << 56) +
760 ((UV) s[offset + 1] << 48) +
761 ((UV) s[offset + 2] << 40) +
762 ((UV) s[offset + 3] << 32) +
763 ( s[offset + 4] << 24);
764 else if (offset + 6 >= srclen)
766 ((UV) s[offset ] << 56) +
767 ((UV) s[offset + 1] << 48) +
768 ((UV) s[offset + 2] << 40) +
769 ((UV) s[offset + 3] << 32) +
770 ((UV) s[offset + 4] << 24) +
771 ((UV) s[offset + 5] << 16);
774 ((UV) s[offset ] << 56) +
775 ((UV) s[offset + 1] << 48) +
776 ((UV) s[offset + 2] << 40) +
777 ((UV) s[offset + 3] << 32) +
778 ((UV) s[offset + 4] << 24) +
779 ((UV) s[offset + 5] << 16) +
780 ( s[offset + 6] << 8);
786 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
788 offset >>= 3; /* turn into byte offset */
793 ((UV) s[offset] << 8) +
797 ((UV) s[offset ] << 24) +
798 ((UV) s[offset + 1] << 16) +
799 ( s[offset + 2] << 8) +
802 else if (size == 64) {
803 if (ckWARN(WARN_PORTABLE))
804 Perl_warner(aTHX_ WARN_PORTABLE,
805 "Bit vector size > 32 non-portable");
807 ((UV) s[offset ] << 56) +
808 ((UV) s[offset + 1] << 48) +
809 ((UV) s[offset + 2] << 40) +
810 ((UV) s[offset + 3] << 32) +
811 ((UV) s[offset + 4] << 24) +
812 ((UV) s[offset + 5] << 16) +
813 ( s[offset + 6] << 8) +
822 /* currently converts input to bytes if possible but doesn't sweat failures,
823 * although it does ensure that the string it clobbers is not marked as
824 * utf8-valid any more
827 Perl_do_vecset(pTHX_ SV *sv)
829 SV *targ = LvTARG(sv);
832 register unsigned char *s;
840 s = (unsigned char*)SvPV_force(targ, targlen);
842 /* This is handled by the SvPOK_only below...
843 if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE))
846 (void) Perl_sv_utf8_downgrade(aTHX_ targ, TRUE);
849 (void)SvPOK_only(targ);
851 offset = LvTARGOFF(sv);
853 Perl_croak(aTHX_ "Assigning to negative offset in vec");
854 size = LvTARGLEN(sv);
855 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
856 Perl_croak(aTHX_ "Illegal number of bits in vec");
858 offset *= size; /* turn into bit offset */
859 len = (offset + size + 7) / 8; /* required number of bytes */
861 s = (unsigned char*)SvGROW(targ, len + 1);
862 (void)memzero((char *)(s + targlen), len - targlen + 1);
863 SvCUR_set(targ, len);
867 mask = (1 << size) - 1;
870 offset >>= 3; /* turn into byte offset */
871 s[offset] &= ~(mask << size);
872 s[offset] |= lval << size;
875 offset >>= 3; /* turn into byte offset */
877 s[offset ] = lval & 0xff;
878 else if (size == 16) {
879 s[offset ] = (lval >> 8) & 0xff;
880 s[offset+1] = lval & 0xff;
882 else if (size == 32) {
883 s[offset ] = (lval >> 24) & 0xff;
884 s[offset+1] = (lval >> 16) & 0xff;
885 s[offset+2] = (lval >> 8) & 0xff;
886 s[offset+3] = lval & 0xff;
889 else if (size == 64) {
890 if (ckWARN(WARN_PORTABLE))
891 Perl_warner(aTHX_ WARN_PORTABLE,
892 "Bit vector size > 32 non-portable");
893 s[offset ] = (lval >> 56) & 0xff;
894 s[offset+1] = (lval >> 48) & 0xff;
895 s[offset+2] = (lval >> 40) & 0xff;
896 s[offset+3] = (lval >> 32) & 0xff;
897 s[offset+4] = (lval >> 24) & 0xff;
898 s[offset+5] = (lval >> 16) & 0xff;
899 s[offset+6] = (lval >> 8) & 0xff;
900 s[offset+7] = lval & 0xff;
908 Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
913 if (SvTYPE(sv) == SVt_PVAV) {
918 for (i = 0; i <= max; i++) {
919 sv = (SV*)av_fetch(av, i, FALSE);
920 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
925 else if (SvTYPE(sv) == SVt_PVHV) {
928 (void)hv_iterinit(hv);
930 while ((entry = hv_iternext(hv)))
931 do_chop(astr,hv_iterval(hv,entry));
934 else if (SvREADONLY(sv))
935 Perl_croak(aTHX_ PL_no_modify);
937 if (len && !SvPOK(sv))
938 s = SvPV_force(sv, len);
941 char *send = s + len;
944 while (s > start && UTF8_IS_CONTINUATION(*s))
946 if (utf8_to_uvchr((U8*)s, 0)) {
947 sv_setpvn(astr, s, send - s);
949 SvCUR_set(sv, s - start);
955 sv_setpvn(astr, "", 0);
959 sv_setpvn(astr, s, 1);
966 sv_setpvn(astr, "", 0);
971 Perl_do_chomp(pTHX_ register SV *sv)
982 if (SvTYPE(sv) == SVt_PVAV) {
987 for (i = 0; i <= max; i++) {
988 sv = (SV*)av_fetch(av, i, FALSE);
989 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
990 count += do_chomp(sv);
994 else if (SvTYPE(sv) == SVt_PVHV) {
997 (void)hv_iterinit(hv);
999 while ((entry = hv_iternext(hv)))
1000 count += do_chomp(hv_iterval(hv,entry));
1003 else if (SvREADONLY(sv))
1004 Perl_croak(aTHX_ PL_no_modify);
1006 if (len && !SvPOKp(sv))
1007 s = SvPV_force(sv, len);
1010 if (RsPARA(PL_rs)) {
1014 while (len && s[-1] == '\n') {
1022 char *rsptr = SvPV(PL_rs, rslen);
1029 if (len < rslen - 1)
1033 if (memNE(s, rsptr, rslen))
1048 Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
1064 bool left_utf = DO_UTF8(left);
1065 bool right_utf = DO_UTF8(right);
1068 if (left_utf && !right_utf)
1069 sv_utf8_upgrade(right);
1070 else if (!left_utf && right_utf)
1071 sv_utf8_upgrade(left);
1073 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
1074 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
1075 lsave = lc = SvPV(left, leftlen);
1076 rsave = rc = SvPV(right, rightlen);
1077 len = leftlen < rightlen ? leftlen : rightlen;
1079 if ((left_utf || right_utf) && (sv == left || sv == right)) {
1080 needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
1081 Newz(801, dc, needlen + 1, char);
1083 else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
1085 dc = SvPV_force(sv, n_a);
1086 if (SvCUR(sv) < len) {
1087 dc = SvGROW(sv, len + 1);
1088 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
1090 if (optype != OP_BIT_AND && (left_utf || right_utf))
1091 dc = SvGROW(sv, leftlen + rightlen + 1);
1094 needlen = ((optype == OP_BIT_AND)
1095 ? len : (leftlen > rightlen ? leftlen : rightlen));
1096 Newz(801, dc, needlen + 1, char);
1097 (void)sv_usepvn(sv, dc, needlen);
1098 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
1101 (void)SvPOK_only(sv);
1102 if (left_utf || right_utf) {
1105 STRLEN lulen = leftlen;
1106 STRLEN rulen = rightlen;
1111 while (lulen && rulen) {
1112 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1115 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1119 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1121 if (sv == left || sv == right)
1122 (void)sv_usepvn(sv, dcsave, needlen);
1123 SvCUR_set(sv, dc - dcsave);
1126 while (lulen && rulen) {
1127 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1130 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1134 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1138 while (lulen && rulen) {
1139 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1142 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1146 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1149 if (sv == left || sv == right)
1150 (void)sv_usepvn(sv, dcsave, needlen);
1151 SvCUR_set(sv, dc - dcsave);
1153 sv_catpvn(sv, rc, rulen);
1155 sv_catpvn(sv, lc, lulen);
1165 if (len >= sizeof(long)*4 &&
1166 !((long)dc % sizeof(long)) &&
1167 !((long)lc % sizeof(long)) &&
1168 !((long)rc % sizeof(long))) /* It's almost always aligned... */
1170 I32 remainder = len % (sizeof(long)*4);
1171 len /= (sizeof(long)*4);
1180 *dl++ = *ll++ & *rl++;
1181 *dl++ = *ll++ & *rl++;
1182 *dl++ = *ll++ & *rl++;
1183 *dl++ = *ll++ & *rl++;
1188 *dl++ = *ll++ ^ *rl++;
1189 *dl++ = *ll++ ^ *rl++;
1190 *dl++ = *ll++ ^ *rl++;
1191 *dl++ = *ll++ ^ *rl++;
1196 *dl++ = *ll++ | *rl++;
1197 *dl++ = *ll++ | *rl++;
1198 *dl++ = *ll++ | *rl++;
1199 *dl++ = *ll++ | *rl++;
1214 *dc++ = *lc++ & *rc++;
1218 *dc++ = *lc++ ^ *rc++;
1222 *dc++ = *lc++ | *rc++;
1226 sv_catpvn(sv, rsave + len, rightlen - len);
1227 else if (leftlen > len)
1228 sv_catpvn(sv, lsave + len, leftlen - len);
1246 I32 gimme = GIMME_V;
1247 I32 dokeys = (PL_op->op_type == OP_KEYS);
1248 I32 dovalues = (PL_op->op_type == OP_VALUES);
1249 I32 realhv = (SvTYPE(hv) == SVt_PVHV);
1251 if (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV)
1252 dokeys = dovalues = TRUE;
1255 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1256 dTARGET; /* make sure to clear its target here */
1257 if (SvTYPE(TARG) == SVt_PVLV)
1258 LvTARG(TARG) = Nullsv;
1264 keys = realhv ? hv : avhv_keys((AV*)hv);
1265 (void)hv_iterinit(keys); /* always reset iterator regardless */
1267 if (gimme == G_VOID)
1270 if (gimme == G_SCALAR) {
1274 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1275 if (SvTYPE(TARG) < SVt_PVLV) {
1276 sv_upgrade(TARG, SVt_PVLV);
1277 sv_magic(TARG, Nullsv, 'k', Nullch, 0);
1280 if (LvTARG(TARG) != (SV*)keys) {
1282 SvREFCNT_dec(LvTARG(TARG));
1283 LvTARG(TARG) = SvREFCNT_inc(keys);
1289 if (! SvTIED_mg((SV*)keys, 'P'))
1294 while (hv_iternext(keys)) i++;
1300 EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
1302 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
1303 while ((entry = hv_iternext(keys))) {
1306 XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
1310 hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry);
1311 DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
1312 (unsigned long)HeHASH(entry),
1314 (unsigned long)(HeHASH(entry) & HvMAX(keys))));