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 line %d",__LINE__);
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 line %d",__LINE__);
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 line %d",__LINE__);
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 */
188 SvCUR_set(sv, d - dstart);
192 New(0, d, len*2+1, U8);
196 if (complement && !del)
199 #ifdef MACOS_TRADITIONAL
200 #define comp CoMP /* "comp" is a keyword in some compilers ... */
203 if (PL_op->op_private & OPpTRANS_SQUASH) {
207 UV comp = utf8_to_uvchr(s, &len);
217 ch = (rlen == 0) ? comp :
218 (comp - 0x100 < rlen) ?
219 tbl[comp+1] : tbl[0x100+rlen];
221 d = uvchr_to_utf8(d, ch);
229 else if ((ch = tbl[comp]) >= 0) {
232 d = uvchr_to_utf8(d, ch);
238 else if (ch == -1) { /* -1 is unmapped character */
242 else if (ch == -2) /* -2 is delete character */
251 UV comp = utf8_to_uvchr(s, &len);
260 if (comp - 0x100 < rlen)
261 d = uvchr_to_utf8(d, tbl[comp+1]);
263 d = uvchr_to_utf8(d, tbl[0x100+rlen]);
267 else if ((ch = tbl[comp]) >= 0) {
268 d = uvchr_to_utf8(d, ch);
271 else if (ch == -1) { /* -1 is unmapped character */
275 else if (ch == -2) /* -2 is delete character */
281 sv_setpvn(sv, (char*)dstart, d - dstart);
286 SvCUR_set(sv, d - dstart);
295 S_do_trans_simple_utf8(pTHX_ SV *sv)/* SPC - OK */
303 I32 grows = PL_op->op_private & OPpTRANS_GROWS;
306 SV* rv = (SV*)cSVOP->op_sv;
307 HV* hv = (HV*)SvRV(rv);
308 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
309 UV none = svp ? SvUV(*svp) : 0x7fffffff;
316 s = (U8*)SvPV(sv, len);
319 U8 *t = s, *e = s + len;
322 if ((hibit = !NATIVE_IS_INVARIANT(ch)))
326 s = bytes_to_utf8(s, &len);
331 svp = hv_fetch(hv, "FINAL", 5, FALSE);
336 /* d needs to be bigger than s, in case e.g. upgrading is required */
337 New(0, d, len*3+UTF8_MAXLEN, U8);
347 if ((uv = swash_fetch(rv, s, TRUE)) < none) {
350 d = uvuni_to_utf8(d, uv);
352 else if (uv == none) {
358 else if (uv == extra) {
362 d = uvuni_to_utf8(d, final);
368 STRLEN clen = d - dstart;
369 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
371 Perl_croak(aTHX_ "panic: do_trans_simple_utf8 line %d",__LINE__);
372 Renew(dstart, nlen+UTF8_MAXLEN, U8);
374 dend = dstart + nlen;
377 if (grows || hibit) {
378 sv_setpvn(sv, (char*)dstart, d - dstart);
385 SvCUR_set(sv, d - dstart);
389 /* Downgrading just 'cos it will is suspect - NI-S */
390 if (!isutf8 && !(PL_hints & HINT_UTF8))
391 sv_utf8_downgrade(sv, TRUE);
397 S_do_trans_count_utf8(pTHX_ SV *sv)/* SPC - OK */
404 SV* rv = (SV*)cSVOP->op_sv;
405 HV* hv = (HV*)SvRV(rv);
406 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
407 UV none = svp ? SvUV(*svp) : 0x7fffffff;
412 s = (U8*)SvPV(sv, len);
414 U8 *t = s, *e = s + len;
417 if ((hibit = !NATIVE_IS_INVARIANT(ch)))
421 start = s = bytes_to_utf8(s, &len);
426 if ((uv = swash_fetch(rv, s, TRUE)) < none || uv == extra)
437 S_do_trans_complex_utf8(pTHX_ SV *sv) /* SPC - NOT OK */
443 I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
444 I32 del = PL_op->op_private & OPpTRANS_DELETE;
445 I32 grows = PL_op->op_private & OPpTRANS_GROWS;
446 SV* rv = (SV*)cSVOP->op_sv;
447 HV* hv = (HV*)SvRV(rv);
448 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
449 UV none = svp ? SvUV(*svp) : 0x7fffffff;
452 bool havefinal = FALSE;
459 s = (U8*)SvPV(sv, len);
462 U8 *t = s, *e = s + len;
465 if ((hibit = !NATIVE_IS_INVARIANT(ch)))
469 s = bytes_to_utf8(s, &len);
474 svp = hv_fetch(hv, "FINAL", 5, FALSE);
481 /* d needs to be bigger than s, in case e.g. upgrading is required */
482 New(0, d, len*3+UTF8_MAXLEN, U8);
494 uv = swash_fetch(rv, s, TRUE);
497 STRLEN clen = d - dstart;
498 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
500 Perl_croak(aTHX_ "panic: do_trans_complex_utf8 line %d",__LINE__);
501 Renew(dstart, nlen+UTF8_MAXLEN, U8);
503 dend = dstart + nlen;
509 d = uvuni_to_utf8(d, uv);
514 else if (uv == none) { /* "none" is unmapped character */
522 else if (uv == extra && !del) {
527 d = uvuni_to_utf8(d, final);
533 uv = utf8_to_uvuni(s, &len);
543 matches++; /* "none+1" is delete character */
549 uv = swash_fetch(rv, s, TRUE);
551 STRLEN clen = d - dstart;
552 STRLEN nlen = dend - dstart + len + UTF8_MAXLEN;
554 Perl_croak(aTHX_ "panic: do_trans_complex_utf8 line %d",__LINE__);
555 Renew(dstart, nlen+UTF8_MAXLEN, U8);
557 dend = dstart + nlen;
562 d = uvuni_to_utf8(d, uv);
565 else if (uv == none) { /* "none" is unmapped character */
572 else if (uv == extra && !del) {
575 d = uvuni_to_utf8(d, final);
578 matches++; /* "none+1" is delete character */
582 if (grows || hibit) {
583 sv_setpvn(sv, (char*)dstart, d - dstart);
590 SvCUR_set(sv, d - dstart);
593 if (!isutf8 && !(PL_hints & HINT_UTF8))
594 sv_utf8_downgrade(sv, TRUE);
601 Perl_do_trans(pTHX_ SV *sv)
604 I32 hasutf = (PL_op->op_private &
605 (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF));
607 if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL))
608 Perl_croak(aTHX_ PL_no_modify);
614 (void)SvPV_force(sv, len);
615 if (!(PL_op->op_private & OPpTRANS_IDENTICAL))
616 (void)SvPOK_only_UTF8(sv);
618 DEBUG_t( Perl_deb(aTHX_ "2.TBL\n"));
620 switch (PL_op->op_private & ~hasutf & 63) {
623 return do_trans_simple_utf8(sv);
625 return do_trans_simple(sv);
627 case OPpTRANS_IDENTICAL:
628 case OPpTRANS_IDENTICAL|OPpTRANS_COMPLEMENT:
630 return do_trans_count_utf8(sv);
632 return do_trans_count(sv);
636 return do_trans_complex_utf8(sv);
638 return do_trans_complex(sv);
643 Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp)
646 register I32 items = sp - mark;
651 (void) SvPV(del, delimlen); /* get the delimlen */
654 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
655 (void)SvUPGRADE(sv, SVt_PV);
656 if (SvLEN(sv) < len + items) { /* current length is way too short */
657 while (items-- > 0) {
658 if (*mark && !SvGAMAGIC(*mark) && SvOK(*mark)) {
664 SvGROW(sv, len + 1); /* so try to pre-extend */
672 if (PL_tainting && SvMAGICAL(sv))
682 for (; items > 0; items--,mark++) {
688 for (; items > 0; items--,mark++)
695 Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
698 char *pat = SvPV(*sarg, patlen);
699 bool do_taint = FALSE;
701 sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
707 /* currently converts input to bytes if possible, but doesn't sweat failure */
709 Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size)
712 unsigned char *s = (unsigned char *) SvPV(sv, srclen);
717 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
718 Perl_croak(aTHX_ "Illegal number of bits in vec");
721 (void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE);
723 offset *= size; /* turn into bit offset */
724 len = (offset + size + 7) / 8; /* required number of bytes */
729 offset >>= 3; /* turn into byte offset */
731 if (offset >= srclen)
734 retnum = (UV) s[offset] << 8;
736 else if (size == 32) {
737 if (offset >= srclen)
739 else if (offset + 1 >= srclen)
741 ((UV) s[offset ] << 24);
742 else if (offset + 2 >= srclen)
744 ((UV) s[offset ] << 24) +
745 ((UV) s[offset + 1] << 16);
748 ((UV) s[offset ] << 24) +
749 ((UV) s[offset + 1] << 16) +
750 ( s[offset + 2] << 8);
753 else if (size == 64) {
754 if (ckWARN(WARN_PORTABLE))
755 Perl_warner(aTHX_ WARN_PORTABLE,
756 "Bit vector size > 32 non-portable");
757 if (offset >= srclen)
759 else if (offset + 1 >= srclen)
761 (UV) s[offset ] << 56;
762 else if (offset + 2 >= srclen)
764 ((UV) s[offset ] << 56) +
765 ((UV) s[offset + 1] << 48);
766 else if (offset + 3 >= srclen)
768 ((UV) s[offset ] << 56) +
769 ((UV) s[offset + 1] << 48) +
770 ((UV) s[offset + 2] << 40);
771 else if (offset + 4 >= srclen)
773 ((UV) s[offset ] << 56) +
774 ((UV) s[offset + 1] << 48) +
775 ((UV) s[offset + 2] << 40) +
776 ((UV) s[offset + 3] << 32);
777 else if (offset + 5 >= srclen)
779 ((UV) s[offset ] << 56) +
780 ((UV) s[offset + 1] << 48) +
781 ((UV) s[offset + 2] << 40) +
782 ((UV) s[offset + 3] << 32) +
783 ( s[offset + 4] << 24);
784 else if (offset + 6 >= srclen)
786 ((UV) s[offset ] << 56) +
787 ((UV) s[offset + 1] << 48) +
788 ((UV) s[offset + 2] << 40) +
789 ((UV) s[offset + 3] << 32) +
790 ((UV) s[offset + 4] << 24) +
791 ((UV) s[offset + 5] << 16);
794 ((UV) s[offset ] << 56) +
795 ((UV) s[offset + 1] << 48) +
796 ((UV) s[offset + 2] << 40) +
797 ((UV) s[offset + 3] << 32) +
798 ((UV) s[offset + 4] << 24) +
799 ((UV) s[offset + 5] << 16) +
800 ( s[offset + 6] << 8);
806 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
808 offset >>= 3; /* turn into byte offset */
813 ((UV) s[offset] << 8) +
817 ((UV) s[offset ] << 24) +
818 ((UV) s[offset + 1] << 16) +
819 ( s[offset + 2] << 8) +
822 else if (size == 64) {
823 if (ckWARN(WARN_PORTABLE))
824 Perl_warner(aTHX_ WARN_PORTABLE,
825 "Bit vector size > 32 non-portable");
827 ((UV) s[offset ] << 56) +
828 ((UV) s[offset + 1] << 48) +
829 ((UV) s[offset + 2] << 40) +
830 ((UV) s[offset + 3] << 32) +
831 ((UV) s[offset + 4] << 24) +
832 ((UV) s[offset + 5] << 16) +
833 ( s[offset + 6] << 8) +
842 /* currently converts input to bytes if possible but doesn't sweat failures,
843 * although it does ensure that the string it clobbers is not marked as
844 * utf8-valid any more
847 Perl_do_vecset(pTHX_ SV *sv)
849 SV *targ = LvTARG(sv);
852 register unsigned char *s;
860 s = (unsigned char*)SvPV_force(targ, targlen);
862 /* This is handled by the SvPOK_only below...
863 if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE))
866 (void) Perl_sv_utf8_downgrade(aTHX_ targ, TRUE);
869 (void)SvPOK_only(targ);
871 offset = LvTARGOFF(sv);
873 Perl_croak(aTHX_ "Assigning to negative offset in vec");
874 size = LvTARGLEN(sv);
875 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
876 Perl_croak(aTHX_ "Illegal number of bits in vec");
878 offset *= size; /* turn into bit offset */
879 len = (offset + size + 7) / 8; /* required number of bytes */
881 s = (unsigned char*)SvGROW(targ, len + 1);
882 (void)memzero((char *)(s + targlen), len - targlen + 1);
883 SvCUR_set(targ, len);
887 mask = (1 << size) - 1;
890 offset >>= 3; /* turn into byte offset */
891 s[offset] &= ~(mask << size);
892 s[offset] |= lval << size;
895 offset >>= 3; /* turn into byte offset */
897 s[offset ] = lval & 0xff;
898 else if (size == 16) {
899 s[offset ] = (lval >> 8) & 0xff;
900 s[offset+1] = lval & 0xff;
902 else if (size == 32) {
903 s[offset ] = (lval >> 24) & 0xff;
904 s[offset+1] = (lval >> 16) & 0xff;
905 s[offset+2] = (lval >> 8) & 0xff;
906 s[offset+3] = lval & 0xff;
909 else if (size == 64) {
910 if (ckWARN(WARN_PORTABLE))
911 Perl_warner(aTHX_ WARN_PORTABLE,
912 "Bit vector size > 32 non-portable");
913 s[offset ] = (lval >> 56) & 0xff;
914 s[offset+1] = (lval >> 48) & 0xff;
915 s[offset+2] = (lval >> 40) & 0xff;
916 s[offset+3] = (lval >> 32) & 0xff;
917 s[offset+4] = (lval >> 24) & 0xff;
918 s[offset+5] = (lval >> 16) & 0xff;
919 s[offset+6] = (lval >> 8) & 0xff;
920 s[offset+7] = lval & 0xff;
928 Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
933 if (SvTYPE(sv) == SVt_PVAV) {
938 for (i = 0; i <= max; i++) {
939 sv = (SV*)av_fetch(av, i, FALSE);
940 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
945 else if (SvTYPE(sv) == SVt_PVHV) {
948 (void)hv_iterinit(hv);
950 while ((entry = hv_iternext(hv)))
951 do_chop(astr,hv_iterval(hv,entry));
954 else if (SvREADONLY(sv))
955 Perl_croak(aTHX_ PL_no_modify);
957 if (len && !SvPOK(sv))
958 s = SvPV_force(sv, len);
961 char *send = s + len;
964 while (s > start && UTF8_IS_CONTINUATION(*s))
966 if (utf8_to_uvchr((U8*)s, 0)) {
967 sv_setpvn(astr, s, send - s);
969 SvCUR_set(sv, s - start);
975 sv_setpvn(astr, "", 0);
979 sv_setpvn(astr, s, 1);
986 sv_setpvn(astr, "", 0);
991 Perl_do_chomp(pTHX_ register SV *sv)
1000 if (RsRECORD(PL_rs))
1003 if (SvTYPE(sv) == SVt_PVAV) {
1008 for (i = 0; i <= max; i++) {
1009 sv = (SV*)av_fetch(av, i, FALSE);
1010 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
1011 count += do_chomp(sv);
1015 else if (SvTYPE(sv) == SVt_PVHV) {
1018 (void)hv_iterinit(hv);
1020 while ((entry = hv_iternext(hv)))
1021 count += do_chomp(hv_iterval(hv,entry));
1024 else if (SvREADONLY(sv))
1025 Perl_croak(aTHX_ PL_no_modify);
1029 if (RsPARA(PL_rs)) {
1033 while (len && s[-1] == '\n') {
1041 char *rsptr = SvPV(PL_rs, rslen);
1048 if (len < rslen - 1)
1052 if (memNE(s, rsptr, rslen))
1057 s = SvPV_force(sv, n_a);
1068 Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
1084 bool left_utf = DO_UTF8(left);
1085 bool right_utf = DO_UTF8(right);
1088 if (left_utf && !right_utf)
1089 sv_utf8_upgrade(right);
1090 else if (!left_utf && right_utf)
1091 sv_utf8_upgrade(left);
1093 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
1094 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
1095 lsave = lc = SvPV(left, leftlen);
1096 rsave = rc = SvPV(right, rightlen);
1097 len = leftlen < rightlen ? leftlen : rightlen;
1099 if ((left_utf || right_utf) && (sv == left || sv == right)) {
1100 needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
1101 Newz(801, dc, needlen + 1, char);
1103 else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
1105 dc = SvPV_force(sv, n_a);
1106 if (SvCUR(sv) < len) {
1107 dc = SvGROW(sv, len + 1);
1108 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
1110 if (optype != OP_BIT_AND && (left_utf || right_utf))
1111 dc = SvGROW(sv, leftlen + rightlen + 1);
1114 needlen = ((optype == OP_BIT_AND)
1115 ? len : (leftlen > rightlen ? leftlen : rightlen));
1116 Newz(801, dc, needlen + 1, char);
1117 (void)sv_usepvn(sv, dc, needlen);
1118 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
1121 (void)SvPOK_only(sv);
1122 if (left_utf || right_utf) {
1125 STRLEN lulen = leftlen;
1126 STRLEN rulen = rightlen;
1131 while (lulen && rulen) {
1132 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1135 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1139 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1141 if (sv == left || sv == right)
1142 (void)sv_usepvn(sv, dcsave, needlen);
1143 SvCUR_set(sv, dc - dcsave);
1146 while (lulen && rulen) {
1147 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1150 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1154 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1158 while (lulen && rulen) {
1159 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1162 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1166 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1169 if (sv == left || sv == right)
1170 (void)sv_usepvn(sv, dcsave, needlen);
1171 SvCUR_set(sv, dc - dcsave);
1173 sv_catpvn(sv, rc, rulen);
1175 sv_catpvn(sv, lc, lulen);
1185 if (len >= sizeof(long)*4 &&
1186 !((long)dc % sizeof(long)) &&
1187 !((long)lc % sizeof(long)) &&
1188 !((long)rc % sizeof(long))) /* It's almost always aligned... */
1190 I32 remainder = len % (sizeof(long)*4);
1191 len /= (sizeof(long)*4);
1200 *dl++ = *ll++ & *rl++;
1201 *dl++ = *ll++ & *rl++;
1202 *dl++ = *ll++ & *rl++;
1203 *dl++ = *ll++ & *rl++;
1208 *dl++ = *ll++ ^ *rl++;
1209 *dl++ = *ll++ ^ *rl++;
1210 *dl++ = *ll++ ^ *rl++;
1211 *dl++ = *ll++ ^ *rl++;
1216 *dl++ = *ll++ | *rl++;
1217 *dl++ = *ll++ | *rl++;
1218 *dl++ = *ll++ | *rl++;
1219 *dl++ = *ll++ | *rl++;
1234 *dc++ = *lc++ & *rc++;
1238 *dc++ = *lc++ ^ *rc++;
1242 *dc++ = *lc++ | *rc++;
1246 sv_catpvn(sv, rsave + len, rightlen - len);
1247 else if (leftlen > len)
1248 sv_catpvn(sv, lsave + len, leftlen - len);
1266 I32 gimme = GIMME_V;
1267 I32 dokeys = (PL_op->op_type == OP_KEYS);
1268 I32 dovalues = (PL_op->op_type == OP_VALUES);
1269 I32 realhv = (SvTYPE(hv) == SVt_PVHV);
1271 if (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV)
1272 dokeys = dovalues = TRUE;
1275 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1276 dTARGET; /* make sure to clear its target here */
1277 if (SvTYPE(TARG) == SVt_PVLV)
1278 LvTARG(TARG) = Nullsv;
1284 keys = realhv ? hv : avhv_keys((AV*)hv);
1285 (void)hv_iterinit(keys); /* always reset iterator regardless */
1287 if (gimme == G_VOID)
1290 if (gimme == G_SCALAR) {
1294 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1295 if (SvTYPE(TARG) < SVt_PVLV) {
1296 sv_upgrade(TARG, SVt_PVLV);
1297 sv_magic(TARG, Nullsv, PERL_MAGIC_nkeys, Nullch, 0);
1300 if (LvTARG(TARG) != (SV*)keys) {
1302 SvREFCNT_dec(LvTARG(TARG));
1303 LvTARG(TARG) = SvREFCNT_inc(keys);
1309 if (! SvTIED_mg((SV*)keys, PERL_MAGIC_tied))
1314 while (hv_iternext(keys)) i++;
1320 EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
1322 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
1323 while ((entry = hv_iternext(keys))) {
1326 XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
1330 hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry);
1331 DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
1332 (unsigned long)HeHASH(entry),
1334 (unsigned long)(HeHASH(entry) & HvMAX(keys))));