X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/93524f2be2dba9389167a137d53a88545322b55e..6b00f562eddf90e215cb117d990dd4595e072f29:/doop.c diff --git a/doop.c b/doop.c index 73ccdcd..c1d4fd4 100644 --- a/doop.c +++ b/doop.c @@ -1,7 +1,7 @@ /* doop.c * - * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - * 2000, 2001, 2002, 2004, 2005, by Larry Wall and others + * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, + * 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. @@ -9,7 +9,9 @@ */ /* - * "'So that was the job I felt I had to do when I started,' thought Sam." + * 'So that was the job I felt I had to do when I started,' thought Sam. + * + * [p.934 of _The Lord of the Rings_, VI/iii: "Mount Doom"] */ /* This file contains some common functions needed to carry out certain @@ -26,99 +28,100 @@ #endif STATIC I32 -S_do_trans_simple(pTHX_ SV *sv) +S_do_trans_simple(pTHX_ SV * const sv) { - U8 *s; - U8 *d; - const U8 *send; - U8 *dstart; + dVAR; I32 matches = 0; - const I32 grows = PL_op->op_private & OPpTRANS_GROWS; STRLEN len; + U8 *s = (U8*)SvPV_nomg(sv,len); + U8 * const send = s+len; + const short * const tbl = (short*)cPVOP->op_pv; + + PERL_ARGS_ASSERT_DO_TRANS_SIMPLE; - const short *tbl = (short*)cPVOP->op_pv; if (!tbl) Perl_croak(aTHX_ "panic: do_trans_simple line %d",__LINE__); - s = (U8*)SvPV(sv, len); - send = s + len; - /* First, take care of non-UTF-8 input strings, because they're easy */ if (!SvUTF8(sv)) { while (s < send) { const I32 ch = tbl[*s]; if (ch >= 0) { matches++; - *s++ = (U8)ch; + *s = (U8)ch; } - else - s++; + s++; } SvSETMAGIC(sv); - return matches; - } - - /* Allow for expansion: $_="a".chr(400); tr/a/\xFE/, FE needs encoding */ - if (grows) - New(0, d, len*2+1, U8); - else - d = s; - dstart = d; - while (s < send) { - STRLEN ulen; - I32 ch; - - /* Need to check this, otherwise 128..255 won't match */ - const UV c = utf8n_to_uvchr(s, send - s, &ulen, 0); - if (c < 0x100 && (ch = tbl[c]) >= 0) { - matches++; - d = uvchr_to_utf8(d, ch); - s += ulen; - } - else { /* No match -> copy */ - Move(s, d, ulen, U8); - d += ulen; - s += ulen; - } - } - if (grows) { - sv_setpvn(sv, (char*)dstart, d - dstart); - Safefree(dstart); } else { - *d = '\0'; - SvCUR_set(sv, d - dstart); + const I32 grows = PL_op->op_private & OPpTRANS_GROWS; + U8 *d; + U8 *dstart; + + /* Allow for expansion: $_="a".chr(400); tr/a/\xFE/, FE needs encoding */ + if (grows) + Newx(d, len*2+1, U8); + else + d = s; + dstart = d; + while (s < send) { + STRLEN ulen; + I32 ch; + + /* Need to check this, otherwise 128..255 won't match */ + const UV c = utf8n_to_uvchr(s, send - s, &ulen, UTF8_ALLOW_DEFAULT); + if (c < 0x100 && (ch = tbl[c]) >= 0) { + matches++; + d = uvchr_to_utf8(d, ch); + s += ulen; + } + else { /* No match -> copy */ + Move(s, d, ulen, U8); + d += ulen; + s += ulen; + } + } + if (grows) { + sv_setpvn(sv, (char*)dstart, d - dstart); + Safefree(dstart); + } + else { + *d = '\0'; + SvCUR_set(sv, d - dstart); + } + SvUTF8_on(sv); + SvSETMAGIC(sv); } - SvUTF8_on(sv); - SvSETMAGIC(sv); return matches; } STATIC I32 -S_do_trans_count(pTHX_ SV *sv) +S_do_trans_count(pTHX_ SV * const sv) { - const U8 *s; - const U8 *send; - I32 matches = 0; + dVAR; STRLEN len; - const I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT; - + const U8 *s = (const U8*)SvPV_nomg_const(sv, len); + const U8 * const send = s + len; + I32 matches = 0; const short * const tbl = (short*)cPVOP->op_pv; + + PERL_ARGS_ASSERT_DO_TRANS_COUNT; + if (!tbl) Perl_croak(aTHX_ "panic: do_trans_count line %d",__LINE__); - s = (const U8*)SvPV_const(sv, len); - send = s + len; - - if (!SvUTF8(sv)) + if (!SvUTF8(sv)) { while (s < send) { if (tbl[*s++] >= 0) matches++; } - else + } + else { + const I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT; while (s < send) { STRLEN ulen; - const UV c = utf8n_to_uvchr(s, send - s, &ulen, 0); + const UV c = utf8n_to_uvchr(s, send - s, &ulen, UTF8_ALLOW_DEFAULT); if (c < 0x100) { if (tbl[c] >= 0) matches++; @@ -126,34 +129,30 @@ S_do_trans_count(pTHX_ SV *sv) matches++; s += ulen; } + } return matches; } STATIC I32 -S_do_trans_complex(pTHX_ SV *sv) +S_do_trans_complex(pTHX_ SV * const sv) { - U8 *s; - U8 *send; - U8 *d; - U8 *dstart; - I32 isutf8; + dVAR; + STRLEN len; + U8 *s = (U8*)SvPV_nomg(sv, len); + U8 * const send = s+len; I32 matches = 0; - const I32 grows = PL_op->op_private & OPpTRANS_GROWS; - const I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT; - const I32 del = PL_op->op_private & OPpTRANS_DELETE; - STRLEN len, rlen = 0; - const short * const tbl = (short*)cPVOP->op_pv; + + PERL_ARGS_ASSERT_DO_TRANS_COMPLEX; + if (!tbl) Perl_croak(aTHX_ "panic: do_trans_complex line %d",__LINE__); - s = (U8*)SvPV(sv, len); - isutf8 = SvUTF8(sv); - send = s + len; + if (!SvUTF8(sv)) { + U8 *d = s; + U8 * const dstart = d; - if (!isutf8) { - dstart = d = s; if (PL_op->op_private & OPpTRANS_SQUASH) { const U8* p = send; while (s < send) { @@ -188,35 +187,39 @@ S_do_trans_complex(pTHX_ SV *sv) *d = '\0'; SvCUR_set(sv, d - dstart); } - else { /* isutf8 */ + else { /* is utf8 */ + const I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT; + const I32 grows = PL_op->op_private & OPpTRANS_GROWS; + const I32 del = PL_op->op_private & OPpTRANS_DELETE; + U8 *d; + U8 *dstart; + STRLEN rlen = 0; + if (grows) - New(0, d, len*2+1, U8); + Newx(d, len*2+1, U8); else d = s; dstart = d; if (complement && !del) rlen = tbl[0x100]; -#ifdef MACOS_TRADITIONAL -#define comp CoMP /* "comp" is a keyword in some compilers ... */ -#endif - if (PL_op->op_private & OPpTRANS_SQUASH) { UV pch = 0xfeedface; while (s < send) { STRLEN len; - const UV comp = utf8_to_uvchr(s, &len); + const UV comp = utf8n_to_uvchr(s, send - s, &len, + UTF8_ALLOW_DEFAULT); I32 ch; if (comp > 0xff) { if (!complement) { - Copy(s, d, len, U8); + Move(s, d, len, U8); d += len; } else { matches++; if (!del) { - ch = (rlen == 0) ? comp : + ch = (rlen == 0) ? (I32)comp : (comp - 0x100 < rlen) ? tbl[comp+1] : tbl[0x100+rlen]; if ((UV)ch != pch) { @@ -238,7 +241,7 @@ S_do_trans_complex(pTHX_ SV *sv) continue; } else if (ch == -1) { /* -1 is unmapped character */ - Copy(s, d, len, U8); + Move(s, d, len, U8); d += len; } else if (ch == -2) /* -2 is delete character */ @@ -250,7 +253,8 @@ S_do_trans_complex(pTHX_ SV *sv) else { while (s < send) { STRLEN len; - const UV comp = utf8_to_uvchr(s, &len); + const UV comp = utf8n_to_uvchr(s, send - s, &len, + UTF8_ALLOW_DEFAULT); I32 ch; if (comp > 0xff) { if (!complement) { @@ -272,7 +276,7 @@ S_do_trans_complex(pTHX_ SV *sv) matches++; } else if (ch == -1) { /* -1 is unmapped character */ - Copy(s, d, len, U8); + Move(s, d, len, U8); d += len; } else if (ch == -2) /* -2 is delete character */ @@ -295,8 +299,9 @@ S_do_trans_complex(pTHX_ SV *sv) } STATIC I32 -S_do_trans_simple_utf8(pTHX_ SV *sv) +S_do_trans_simple_utf8(pTHX_ SV * const sv) { + dVAR; U8 *s; U8 *send; U8 *d; @@ -305,39 +310,44 @@ S_do_trans_simple_utf8(pTHX_ SV *sv) I32 matches = 0; const I32 grows = PL_op->op_private & OPpTRANS_GROWS; STRLEN len; - - SV* rv = (SV*)cSVOP->op_sv; - HV* hv = (HV*)SvRV(rv); - SV** svp = hv_fetch(hv, "NONE", 4, FALSE); + SV* const rv = +#ifdef USE_ITHREADS + PAD_SVl(cPADOP->op_padix); +#else + MUTABLE_SV(cSVOP->op_sv); +#endif + HV* const hv = MUTABLE_HV(SvRV(rv)); + SV* const * svp = hv_fetchs(hv, "NONE", FALSE); const UV none = svp ? SvUV(*svp) : 0x7fffffff; const UV extra = none + 1; UV final = 0; - UV uv; - I32 isutf8; U8 hibit = 0; - s = (U8*)SvPV(sv, len); - isutf8 = SvUTF8(sv); - if (!isutf8) { - const U8 *t = s, *e = s + len; + PERL_ARGS_ASSERT_DO_TRANS_SIMPLE_UTF8; + + s = (U8*)SvPV_nomg(sv, len); + if (!SvUTF8(sv)) { + const U8 *t = s; + const U8 * const e = s + len; while (t < e) { const U8 ch = *t++; - if ((hibit = !NATIVE_IS_INVARIANT(ch))) + hibit = !NATIVE_IS_INVARIANT(ch); + if (hibit) { + s = bytes_to_utf8(s, &len); break; + } } - if (hibit) - s = bytes_to_utf8(s, &len); } send = s + len; start = s; - svp = hv_fetch(hv, "FINAL", 5, FALSE); + svp = hv_fetchs(hv, "FINAL", FALSE); if (svp) final = SvUV(*svp); if (grows) { /* d needs to be bigger than s, in case e.g. upgrading is required */ - New(0, d, len * 3 + UTF8_MAXBYTES, U8); + Newx(d, len * 3 + UTF8_MAXBYTES, U8); dend = d + len * 3; dstart = d; } @@ -347,7 +357,8 @@ S_do_trans_simple_utf8(pTHX_ SV *sv) } while (s < send) { - if ((uv = swash_fetch(rv, s, TRUE)) < none) { + const UV uv = swash_fetch(rv, s, TRUE); + if (uv < none) { s += UTF8SKIP(s); matches++; d = uvuni_to_utf8(d, uv); @@ -393,37 +404,46 @@ S_do_trans_simple_utf8(pTHX_ SV *sv) } STATIC I32 -S_do_trans_count_utf8(pTHX_ SV *sv) +S_do_trans_count_utf8(pTHX_ SV * const sv) { + dVAR; const U8 *s; - const U8 *start = 0, *send; + const U8 *start = NULL; + const U8 *send; I32 matches = 0; STRLEN len; - - SV* rv = (SV*)cSVOP->op_sv; - HV* hv = (HV*)SvRV(rv); - SV** svp = hv_fetch(hv, "NONE", 4, FALSE); + SV* const rv = +#ifdef USE_ITHREADS + PAD_SVl(cPADOP->op_padix); +#else + MUTABLE_SV(cSVOP->op_sv); +#endif + HV* const hv = MUTABLE_HV(SvRV(rv)); + SV* const * const svp = hv_fetchs(hv, "NONE", FALSE); const UV none = svp ? SvUV(*svp) : 0x7fffffff; const UV extra = none + 1; U8 hibit = 0; - s = (const U8*)SvPV_const(sv, len); + PERL_ARGS_ASSERT_DO_TRANS_COUNT_UTF8; + + s = (const U8*)SvPV_nomg_const(sv, len); if (!SvUTF8(sv)) { const U8 *t = s; - const U8 *e = s + len; + const U8 * const e = s + len; while (t < e) { const U8 ch = *t++; - if ((hibit = !NATIVE_IS_INVARIANT(ch))) + hibit = !NATIVE_IS_INVARIANT(ch); + if (hibit) { + start = s = bytes_to_utf8(s, &len); break; + } } - if (hibit) - start = s = bytes_to_utf8(s, &len); } send = s + len; while (s < send) { - UV uv; - if ((uv = swash_fetch(rv, s, TRUE)) < none || uv == extra) + const UV uv = swash_fetch(rv, s, TRUE); + if (uv < none || uv == extra) matches++; s += UTF8SKIP(s); } @@ -434,17 +454,23 @@ S_do_trans_count_utf8(pTHX_ SV *sv) } STATIC I32 -S_do_trans_complex_utf8(pTHX_ SV *sv) +S_do_trans_complex_utf8(pTHX_ SV * const sv) { + dVAR; U8 *start, *send; U8 *d; I32 matches = 0; const I32 squash = PL_op->op_private & OPpTRANS_SQUASH; const I32 del = PL_op->op_private & OPpTRANS_DELETE; const I32 grows = PL_op->op_private & OPpTRANS_GROWS; - SV* rv = (SV*)cSVOP->op_sv; - HV* hv = (HV*)SvRV(rv); - SV** svp = hv_fetch(hv, "NONE", 4, FALSE); + SV* const rv = +#ifdef USE_ITHREADS + PAD_SVl(cPADOP->op_padix); +#else + MUTABLE_SV(cSVOP->op_sv); +#endif + HV * const hv = MUTABLE_HV(SvRV(rv)); + SV * const *svp = hv_fetchs(hv, "NONE", FALSE); const UV none = svp ? SvUV(*svp) : 0x7fffffff; const UV extra = none + 1; UV final = 0; @@ -452,23 +478,26 @@ S_do_trans_complex_utf8(pTHX_ SV *sv) STRLEN len; U8 *dstart, *dend; U8 hibit = 0; + U8 *s = (U8*)SvPV_nomg(sv, len); + + PERL_ARGS_ASSERT_DO_TRANS_COMPLEX_UTF8; - U8 *s = (U8*)SvPV(sv, len); - const I32 isutf8 = SvUTF8(sv); - if (!isutf8) { - const U8 *t = s, *e = s + len; + if (!SvUTF8(sv)) { + const U8 *t = s; + const U8 * const e = s + len; while (t < e) { const U8 ch = *t++; - if ((hibit = !NATIVE_IS_INVARIANT(ch))) + hibit = !NATIVE_IS_INVARIANT(ch); + if (hibit) { + s = bytes_to_utf8(s, &len); break; + } } - if (hibit) - s = bytes_to_utf8(s, &len); } send = s + len; start = s; - svp = hv_fetch(hv, "FINAL", 5, FALSE); + svp = hv_fetchs(hv, "FINAL", FALSE); if (svp) { final = SvUV(*svp); havefinal = TRUE; @@ -476,7 +505,7 @@ S_do_trans_complex_utf8(pTHX_ SV *sv) if (grows) { /* d needs to be bigger than s, in case e.g. upgrading is required */ - New(0, d, len * 3 + UTF8_MAXBYTES, U8); + Newx(d, len * 3 + UTF8_MAXBYTES, U8); dend = d + len * 3; dstart = d; } @@ -527,7 +556,7 @@ S_do_trans_complex_utf8(pTHX_ SV *sv) } else { STRLEN len; - uv = utf8_to_uvuni(s, &len); + uv = utf8n_to_uvuni(s, send - s, &len, UTF8_ALLOW_DEFAULT); if (uv != puv) { Move(s, d, len, U8); d += len; @@ -595,22 +624,23 @@ S_do_trans_complex_utf8(pTHX_ SV *sv) I32 Perl_do_trans(pTHX_ SV *sv) { + dVAR; STRLEN len; const I32 hasutf = (PL_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)); - if (SvREADONLY(sv)) { - if (SvIsCOW(sv)) - sv_force_normal_flags(sv, 0); - if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL)) - Perl_croak(aTHX_ PL_no_modify); + PERL_ARGS_ASSERT_DO_TRANS; + + if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL)) { + if (!SvIsCOW(sv)) + Perl_croak_no_modify(aTHX); } (void)SvPV_const(sv, len); if (!len) return 0; if (!(PL_op->op_private & OPpTRANS_IDENTICAL)) { - if (!SvPOKp(sv)) - (void)SvPV_force(sv, len); + if (!SvPOKp(sv) || SvTHINKFIRST(sv)) + (void)SvPV_force_nomg(sv, len); (void)SvPOK_only_UTF8(sv); } @@ -641,14 +671,17 @@ Perl_do_trans(pTHX_ SV *sv) } void -Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp) +Perl_do_join(pTHX_ register SV *sv, SV *delim, register SV **mark, register SV **sp) { - SV **oldmark = mark; - register I32 items = sp - mark; - register STRLEN len; + dVAR; + SV ** const oldmark = mark; + I32 items = sp - mark; + STRLEN len; STRLEN delimlen; - (void) SvPV_const(del, delimlen); /* stringify and get the delimlen */ + PERL_ARGS_ASSERT_DO_JOIN; + + (void) SvPV_const(delim, delimlen); /* stringify and get the delimlen */ /* SvCUR assumes it's SvPOK() and woe betide you if it's not. */ mark++; @@ -670,7 +703,7 @@ Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **s ++mark; } - sv_setpvn(sv, "", 0); + sv_setpvs(sv, ""); /* sv_setpv retains old UTF8ness [perl #24846] */ SvUTF8_off(sv); @@ -685,7 +718,7 @@ Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **s if (delimlen) { for (; items > 0; items--,mark++) { - sv_catsv(sv,del); + sv_catsv_nomg(sv,delim); sv_catsv(sv,*mark); } } @@ -699,14 +732,25 @@ Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **s void Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg) { + dVAR; STRLEN patlen; - const char *pat = SvPV_const(*sarg, patlen); + const char * const pat = SvPV_const(*sarg, patlen); bool do_taint = FALSE; + PERL_ARGS_ASSERT_DO_SPRINTF; + + if (SvTAINTED(*sarg)) + TAINT_PROPER( + (PL_op && PL_op->op_type < OP_max) + ? (PL_op->op_type == OP_PRTF) + ? "printf" + : PL_op_name[PL_op->op_type] + : "(unknown)" + ); SvUTF8_off(sv); if (DO_UTF8(*sarg)) SvUTF8_on(sv); - sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint); + sv_vsetpvfn(sv, pat, patlen, NULL, sarg + 1, len - 1, &do_taint); SvSETMAGIC(sv); if (do_taint) SvTAINTED_on(sv); @@ -714,132 +758,145 @@ Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg) /* currently converts input to bytes if possible, but doesn't sweat failure */ UV -Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size) +Perl_do_vecget(pTHX_ SV *sv, SSize_t offset, int size) { - STRLEN srclen, len; - const unsigned char *s = (const unsigned char *) SvPV_const(sv, srclen); + dVAR; + STRLEN srclen, len, uoffset, bitoffs = 0; + const unsigned char *s = (const unsigned char *) SvPV_flags_const(sv, srclen, + SV_GMAGIC | ((PL_op->op_flags & OPf_MOD || LVRET) + ? SV_UNDEF_RETURNS_NULL : 0)); UV retnum = 0; + if (!s) { + s = (const unsigned char *)""; + } + + PERL_ARGS_ASSERT_DO_VECGET; + if (offset < 0) - return retnum; + return 0; if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */ Perl_croak(aTHX_ "Illegal number of bits in vec"); if (SvUTF8(sv)) (void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE); - offset *= size; /* turn into bit offset */ - len = (offset + size + 7) / 8; /* required number of bytes */ + if (size < 8) { + bitoffs = ((offset%8)*size)%8; + uoffset = offset/(8/size); + } + else if (size > 8) + uoffset = offset*(size/8); + else + uoffset = offset; + + len = uoffset + (bitoffs + size + 7)/8; /* required number of bytes */ if (len > srclen) { if (size <= 8) retnum = 0; else { - offset >>= 3; /* turn into byte offset */ if (size == 16) { - if ((STRLEN)offset >= srclen) + if (uoffset >= srclen) retnum = 0; else - retnum = (UV) s[offset] << 8; + retnum = (UV) s[uoffset] << 8; } else if (size == 32) { - if ((STRLEN)offset >= srclen) + if (uoffset >= srclen) retnum = 0; - else if ((STRLEN)(offset + 1) >= srclen) + else if (uoffset + 1 >= srclen) retnum = - ((UV) s[offset ] << 24); - else if ((STRLEN)(offset + 2) >= srclen) + ((UV) s[uoffset ] << 24); + else if (uoffset + 2 >= srclen) retnum = - ((UV) s[offset ] << 24) + - ((UV) s[offset + 1] << 16); + ((UV) s[uoffset ] << 24) + + ((UV) s[uoffset + 1] << 16); else retnum = - ((UV) s[offset ] << 24) + - ((UV) s[offset + 1] << 16) + - ( s[offset + 2] << 8); + ((UV) s[uoffset ] << 24) + + ((UV) s[uoffset + 1] << 16) + + ( s[uoffset + 2] << 8); } #ifdef UV_IS_QUAD else if (size == 64) { - if (ckWARN(WARN_PORTABLE)) - Perl_warner(aTHX_ packWARN(WARN_PORTABLE), - "Bit vector size > 32 non-portable"); - if (offset >= srclen) + Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE), + "Bit vector size > 32 non-portable"); + if (uoffset >= srclen) retnum = 0; - else if (offset + 1 >= srclen) + else if (uoffset + 1 >= srclen) retnum = - (UV) s[offset ] << 56; - else if (offset + 2 >= srclen) + (UV) s[uoffset ] << 56; + else if (uoffset + 2 >= srclen) retnum = - ((UV) s[offset ] << 56) + - ((UV) s[offset + 1] << 48); - else if (offset + 3 >= srclen) + ((UV) s[uoffset ] << 56) + + ((UV) s[uoffset + 1] << 48); + else if (uoffset + 3 >= srclen) retnum = - ((UV) s[offset ] << 56) + - ((UV) s[offset + 1] << 48) + - ((UV) s[offset + 2] << 40); - else if (offset + 4 >= srclen) + ((UV) s[uoffset ] << 56) + + ((UV) s[uoffset + 1] << 48) + + ((UV) s[uoffset + 2] << 40); + else if (uoffset + 4 >= srclen) retnum = - ((UV) s[offset ] << 56) + - ((UV) s[offset + 1] << 48) + - ((UV) s[offset + 2] << 40) + - ((UV) s[offset + 3] << 32); - else if (offset + 5 >= srclen) + ((UV) s[uoffset ] << 56) + + ((UV) s[uoffset + 1] << 48) + + ((UV) s[uoffset + 2] << 40) + + ((UV) s[uoffset + 3] << 32); + else if (uoffset + 5 >= srclen) retnum = - ((UV) s[offset ] << 56) + - ((UV) s[offset + 1] << 48) + - ((UV) s[offset + 2] << 40) + - ((UV) s[offset + 3] << 32) + - ( s[offset + 4] << 24); - else if (offset + 6 >= srclen) + ((UV) s[uoffset ] << 56) + + ((UV) s[uoffset + 1] << 48) + + ((UV) s[uoffset + 2] << 40) + + ((UV) s[uoffset + 3] << 32) + + ( s[uoffset + 4] << 24); + else if (uoffset + 6 >= srclen) retnum = - ((UV) s[offset ] << 56) + - ((UV) s[offset + 1] << 48) + - ((UV) s[offset + 2] << 40) + - ((UV) s[offset + 3] << 32) + - ((UV) s[offset + 4] << 24) + - ((UV) s[offset + 5] << 16); + ((UV) s[uoffset ] << 56) + + ((UV) s[uoffset + 1] << 48) + + ((UV) s[uoffset + 2] << 40) + + ((UV) s[uoffset + 3] << 32) + + ((UV) s[uoffset + 4] << 24) + + ((UV) s[uoffset + 5] << 16); else retnum = - ((UV) s[offset ] << 56) + - ((UV) s[offset + 1] << 48) + - ((UV) s[offset + 2] << 40) + - ((UV) s[offset + 3] << 32) + - ((UV) s[offset + 4] << 24) + - ((UV) s[offset + 5] << 16) + - ( s[offset + 6] << 8); + ((UV) s[uoffset ] << 56) + + ((UV) s[uoffset + 1] << 48) + + ((UV) s[uoffset + 2] << 40) + + ((UV) s[uoffset + 3] << 32) + + ((UV) s[uoffset + 4] << 24) + + ((UV) s[uoffset + 5] << 16) + + ( s[uoffset + 6] << 8); } #endif } } else if (size < 8) - retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1); + retnum = (s[uoffset] >> bitoffs) & ((1 << size) - 1); else { - offset >>= 3; /* turn into byte offset */ if (size == 8) - retnum = s[offset]; + retnum = s[uoffset]; else if (size == 16) retnum = - ((UV) s[offset] << 8) + - s[offset + 1]; + ((UV) s[uoffset] << 8) + + s[uoffset + 1]; else if (size == 32) retnum = - ((UV) s[offset ] << 24) + - ((UV) s[offset + 1] << 16) + - ( s[offset + 2] << 8) + - s[offset + 3]; + ((UV) s[uoffset ] << 24) + + ((UV) s[uoffset + 1] << 16) + + ( s[uoffset + 2] << 8) + + s[uoffset + 3]; #ifdef UV_IS_QUAD else if (size == 64) { - if (ckWARN(WARN_PORTABLE)) - Perl_warner(aTHX_ packWARN(WARN_PORTABLE), - "Bit vector size > 32 non-portable"); + Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE), + "Bit vector size > 32 non-portable"); retnum = - ((UV) s[offset ] << 56) + - ((UV) s[offset + 1] << 48) + - ((UV) s[offset + 2] << 40) + - ((UV) s[offset + 3] << 32) + - ((UV) s[offset + 4] << 24) + - ((UV) s[offset + 5] << 16) + - ( s[offset + 6] << 8) + - s[offset + 7]; + ((UV) s[uoffset ] << 56) + + ((UV) s[uoffset + 1] << 48) + + ((UV) s[uoffset + 2] << 40) + + ((UV) s[uoffset + 3] << 32) + + ((UV) s[uoffset + 4] << 24) + + ((UV) s[uoffset + 5] << 16) + + ( s[uoffset + 6] << 8) + + s[uoffset + 7]; } #endif } @@ -854,18 +911,22 @@ Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size) void Perl_do_vecset(pTHX_ SV *sv) { - SV *targ = LvTARG(sv); - register I32 offset; - register I32 size; - register unsigned char *s; - register UV lval; + dVAR; + SSize_t offset, bitoffs = 0; + int size; + unsigned char *s; + UV lval; I32 mask; STRLEN targlen; STRLEN len; + SV * const targ = LvTARG(sv); + + PERL_ARGS_ASSERT_DO_VECSET; if (!targ) return; - s = (unsigned char*)SvPV_force(targ, targlen); + s = (unsigned char*)SvPV_force_flags(targ, targlen, + SV_GMAGIC | SV_UNDEF_RETURNS_NULL); if (SvUTF8(targ)) { /* This is handled by the SvPOK_only below... if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE)) @@ -883,8 +944,14 @@ Perl_do_vecset(pTHX_ SV *sv) if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */ Perl_croak(aTHX_ "Illegal number of bits in vec"); - offset *= size; /* turn into bit offset */ - len = (offset + size + 7) / 8; /* required number of bytes */ + if (size < 8) { + bitoffs = ((offset%8)*size)%8; + offset /= 8/size; + } + else if (size > 8) + offset *= size/8; + + len = offset + (bitoffs + size + 7)/8; /* required number of bytes */ if (len > targlen) { s = (unsigned char*)SvGROW(targ, len + 1); (void)memzero((char *)(s + targlen), len - targlen + 1); @@ -893,14 +960,11 @@ Perl_do_vecset(pTHX_ SV *sv) if (size < 8) { mask = (1 << size) - 1; - size = offset & 7; lval &= mask; - offset >>= 3; /* turn into byte offset */ - s[offset] &= ~(mask << size); - s[offset] |= lval << size; + s[offset] &= ~(mask << bitoffs); + s[offset] |= lval << bitoffs; } else { - offset >>= 3; /* turn into byte offset */ if (size == 8) s[offset ] = (U8)( lval & 0xff); else if (size == 16) { @@ -915,9 +979,8 @@ Perl_do_vecset(pTHX_ SV *sv) } #ifdef UV_IS_QUAD else if (size == 64) { - if (ckWARN(WARN_PORTABLE)) - Perl_warner(aTHX_ packWARN(WARN_PORTABLE), - "Bit vector size > 32 non-portable"); + Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE), + "Bit vector size > 32 non-portable"); s[offset ] = (U8)((lval >> 56) & 0xff); s[offset+1] = (U8)((lval >> 48) & 0xff); s[offset+2] = (U8)((lval >> 40) & 0xff); @@ -933,268 +996,90 @@ Perl_do_vecset(pTHX_ SV *sv) } void -Perl_do_chop(pTHX_ register SV *astr, register SV *sv) +Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right) { + dVAR; +#ifdef LIBERAL + long *dl; + long *ll; + long *rl; +#endif + char *dc; + STRLEN leftlen; + STRLEN rightlen; + const char *lc; + const char *rc; STRLEN len; - char *s; + STRLEN lensave; + const char *lsave; + const char *rsave; + bool left_utf; + bool right_utf; + STRLEN needlen = 0; - if (SvTYPE(sv) == SVt_PVAV) { - register I32 i; - AV* av = (AV*)sv; - const I32 max = AvFILL(av); + PERL_ARGS_ASSERT_DO_VOP; - for (i = 0; i <= max; i++) { - sv = (SV*)av_fetch(av, i, FALSE); - if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef)) - do_chop(astr, sv); - } - return; - } - else if (SvTYPE(sv) == SVt_PVHV) { - HV* hv = (HV*)sv; - HE* entry; - (void)hv_iterinit(hv); - /*SUPPRESS 560*/ - while ((entry = hv_iternext(hv))) - do_chop(astr,hv_iterval(hv,entry)); - return; + if (sv != left || (optype != OP_BIT_AND && !SvOK(sv))) + sv_setpvs(sv, ""); /* avoid undef warning on |= and ^= */ + if (sv == left) { + lsave = lc = SvPV_force_nomg(left, leftlen); } - else if (SvREADONLY(sv)) { - if (SvFAKE(sv)) { - /* SV is copy-on-write */ - sv_force_normal_flags(sv, 0); - } - if (SvREADONLY(sv)) - Perl_croak(aTHX_ PL_no_modify); - } - s = SvPV(sv, len); - if (len && !SvPOK(sv)) - s = SvPV_force(sv, len); - if (DO_UTF8(sv)) { - if (s && len) { - char *send = s + len; - char *start = s; - s = send - 1; - while (s > start && UTF8_IS_CONTINUATION(*s)) - s--; - if (utf8_to_uvchr((U8*)s, 0)) { - sv_setpvn(astr, s, send - s); - *s = '\0'; - SvCUR_set(sv, s - start); - SvNIOK_off(sv); - SvUTF8_on(astr); - } - } - else - sv_setpvn(astr, "", 0); - } - else if (s && len) { - s += --len; - sv_setpvn(astr, s, 1); - *s = '\0'; - SvCUR_set(sv, len); - SvUTF8_off(sv); - SvNIOK_off(sv); + else { + lsave = lc = SvPV_nomg_const(left, leftlen); + SvPV_force_nomg_nolen(sv); } - else - sv_setpvn(astr, "", 0); - SvSETMAGIC(sv); -} + rsave = rc = SvPV_nomg_const(right, rightlen); -I32 -Perl_do_chomp(pTHX_ register SV *sv) -{ - register I32 count; - STRLEN len; - char *s; - char *temp_buffer = NULL; - SV* svrecode = Nullsv; + /* This need to come after SvPV to ensure that string overloading has + fired off. */ - if (RsSNARF(PL_rs)) - return 0; - if (RsRECORD(PL_rs)) - return 0; - count = 0; - if (SvTYPE(sv) == SVt_PVAV) { - register I32 i; - AV* av = (AV*)sv; - const I32 max = AvFILL(av); - - for (i = 0; i <= max; i++) { - sv = (SV*)av_fetch(av, i, FALSE); - if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef)) - count += do_chomp(sv); - } - return count; - } - else if (SvTYPE(sv) == SVt_PVHV) { - HV* hv = (HV*)sv; - HE* entry; - (void)hv_iterinit(hv); - /*SUPPRESS 560*/ - while ((entry = hv_iternext(hv))) - count += do_chomp(hv_iterval(hv,entry)); - return count; - } - else if (SvREADONLY(sv)) { - if (SvFAKE(sv)) { - /* SV is copy-on-write */ - sv_force_normal_flags(sv, 0); - } - if (SvREADONLY(sv)) - Perl_croak(aTHX_ PL_no_modify); - } + left_utf = DO_UTF8(left); + right_utf = DO_UTF8(right); - if (PL_encoding) { - if (!SvUTF8(sv)) { - /* XXX, here sv is utf8-ized as a side-effect! - If encoding.pm is used properly, almost string-generating - operations, including literal strings, chr(), input data, etc. - should have been utf8-ized already, right? + if (left_utf && !right_utf) { + /* Avoid triggering overloading again by using temporaries. + Maybe there should be a variant of sv_utf8_upgrade that takes pvn */ - sv_recode_to_utf8(sv, PL_encoding); - } - } - - s = SvPV(sv, len); - if (s && len) { - s += --len; - if (RsPARA(PL_rs)) { - if (*s != '\n') - goto nope; - ++count; - while (len && s[-1] == '\n') { - --len; - --s; - ++count; - } - } - else { - STRLEN rslen, rs_charlen; - const char *rsptr = SvPV_const(PL_rs, rslen); - - rs_charlen = SvUTF8(PL_rs) - ? sv_len_utf8(PL_rs) - : rslen; - - if (SvUTF8(PL_rs) != SvUTF8(sv)) { - /* Assumption is that rs is shorter than the scalar. */ - if (SvUTF8(PL_rs)) { - /* RS is utf8, scalar is 8 bit. */ - bool is_utf8 = TRUE; - temp_buffer = (char*)bytes_from_utf8((U8*)rsptr, - &rslen, &is_utf8); - if (is_utf8) { - /* Cannot downgrade, therefore cannot possibly match - */ - assert (temp_buffer == rsptr); - temp_buffer = NULL; - goto nope; - } - rsptr = temp_buffer; - } - else if (PL_encoding) { - /* RS is 8 bit, encoding.pm is used. - * Do not recode PL_rs as a side-effect. */ - svrecode = newSVpvn(rsptr, rslen); - sv_recode_to_utf8(svrecode, PL_encoding); - rsptr = SvPV_const(svrecode, rslen); - rs_charlen = sv_len_utf8(svrecode); - } - else { - /* RS is 8 bit, scalar is utf8. */ - temp_buffer = (char*)bytes_to_utf8((U8*)rsptr, &rslen); - rsptr = temp_buffer; - } - } - if (rslen == 1) { - if (*s != *rsptr) - goto nope; - ++count; - } - else { - if (len < rslen - 1) - goto nope; - len -= rslen - 1; - s -= rslen - 1; - if (memNE(s, rsptr, rslen)) - goto nope; - count += rs_charlen; - } - } - s = SvPV_force_nolen(sv); - SvCUR_set(sv, len); - *SvEND(sv) = '\0'; - SvNIOK_off(sv); - SvSETMAGIC(sv); - } - nope: - - if (svrecode) - SvREFCNT_dec(svrecode); - - Safefree(temp_buffer); - return count; -} - -void -Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right) -{ -#ifdef LIBERAL - register long *dl; - register long *ll; - register long *rl; -#endif - register char *dc; - STRLEN leftlen; - STRLEN rightlen; - register const char *lc; - register const char *rc; - register I32 len; - I32 lensave; - const char *lsave; - const char *rsave; - const bool left_utf = DO_UTF8(left); - const bool right_utf = DO_UTF8(right); - I32 needlen = 0; - - if (left_utf && !right_utf) + right = newSVpvn_flags(rsave, rightlen, SVs_TEMP); sv_utf8_upgrade(right); - else if (!left_utf && right_utf) + rsave = rc = SvPV_nomg_const(right, rightlen); + right_utf = TRUE; + } + else if (!left_utf && right_utf) { + left = newSVpvn_flags(lsave, leftlen, SVs_TEMP); sv_utf8_upgrade(left); + lsave = lc = SvPV_nomg_const(left, leftlen); + left_utf = TRUE; + } - if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv))) - sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */ - lsave = lc = SvPV_nomg_const(left, leftlen); - rsave = rc = SvPV_nomg_const(right, rightlen); len = leftlen < rightlen ? leftlen : rightlen; lensave = len; + SvCUR_set(sv, len); + (void)SvPOK_only(sv); if ((left_utf || right_utf) && (sv == left || sv == right)) { needlen = optype == OP_BIT_AND ? len : leftlen + rightlen; - Newz(801, dc, needlen + 1, char); + Newxz(dc, needlen + 1, char); } else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) { - STRLEN n_a; - dc = SvPV_force_nomg(sv, n_a); - if (SvCUR(sv) < (STRLEN)len) { - dc = SvGROW(sv, (STRLEN)(len + 1)); + dc = SvPV_force_nomg_nolen(sv); + if (SvLEN(sv) < len + 1) { + dc = SvGROW(sv, len + 1); (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1); } if (optype != OP_BIT_AND && (left_utf || right_utf)) dc = SvGROW(sv, leftlen + rightlen + 1); } else { - needlen = ((optype == OP_BIT_AND) - ? len : (leftlen > rightlen ? leftlen : rightlen)); - Newz(801, dc, needlen + 1, char); - (void)sv_usepvn(sv, dc, needlen); + needlen = optype == OP_BIT_AND + ? len : (leftlen > rightlen ? leftlen : rightlen); + Newxz(dc, needlen + 1, char); + sv_usepvn_flags(sv, dc, needlen, SV_HAS_TRAILING_NUL); dc = SvPVX(sv); /* sv_usepvn() calls Renew() */ } - SvCUR_set(sv, len); - (void)SvPOK_only(sv); if (left_utf || right_utf) { UV duc, luc, ruc; - char *dcsave = dc; + char *dcorig = dc; + char *dcsave = NULL; STRLEN lulen = leftlen; STRLEN rulen = rightlen; STRLEN ulen; @@ -1212,8 +1097,8 @@ Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right) dc = (char*)uvchr_to_utf8((U8*)dc, duc); } if (sv == left || sv == right) - (void)sv_usepvn(sv, dcsave, needlen); - SvCUR_set(sv, dc - dcsave); + (void)sv_usepvn(sv, dcorig, needlen); + SvCUR_set(sv, dc - dcorig); break; case OP_BIT_XOR: while (lulen && rulen) { @@ -1239,16 +1124,26 @@ Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right) dc = (char*)uvchr_to_utf8((U8*)dc, duc); } mop_up_utf: + if (rulen) + dcsave = savepvn(rc, rulen); + else if (lulen) + dcsave = savepvn(lc, lulen); if (sv == left || sv == right) - (void)sv_usepvn(sv, dcsave, needlen); - SvCUR_set(sv, dc - dcsave); + (void)sv_usepvn(sv, dcorig, needlen); /* uses Renew(); defaults to nomg */ + SvCUR_set(sv, dc - dcorig); if (rulen) - sv_catpvn(sv, rc, rulen); + sv_catpvn_nomg(sv, dcsave, rulen); else if (lulen) - sv_catpvn(sv, lc, lulen); + sv_catpvn_nomg(sv, dcsave, lulen); else *SvEND(sv) = '\0'; + Safefree(dcsave); break; + default: + if (sv == left || sv == right) + Safefree(dcorig); + Perl_croak(aTHX_ "panic: do_vop called for op %u (%s)", + (unsigned)optype, PL_op_name[optype]); } SvUTF8_on(sv); goto finish; @@ -1256,11 +1151,11 @@ Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right) else #ifdef LIBERAL if (len >= sizeof(long)*4 && - !((long)dc % sizeof(long)) && - !((long)lc % sizeof(long)) && - !((long)rc % sizeof(long))) /* It's almost always aligned... */ + !((unsigned long)dc % sizeof(long)) && + !((unsigned long)lc % sizeof(long)) && + !((unsigned long)rc % sizeof(long))) /* It's almost always aligned... */ { - const I32 remainder = len % (sizeof(long)*4); + const STRLEN remainder = len % (sizeof(long)*4); len /= (sizeof(long)*4); dl = (long*)dc; @@ -1305,6 +1200,7 @@ Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right) case OP_BIT_AND: while (len--) *dc++ = *lc++ & *rc++; + *dc = '\0'; break; case OP_BIT_XOR: while (len--) @@ -1315,10 +1211,10 @@ Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right) *dc++ = *lc++ | *rc++; mop_up: len = lensave; - if (rightlen > (STRLEN)len) - sv_catpvn(sv, rsave + len, rightlen - len); + if (rightlen > len) + sv_catpvn_nomg(sv, rsave + len, rightlen - len); else if (leftlen > (STRLEN)len) - sv_catpvn(sv, lsave + len, leftlen - len); + sv_catpvn_nomg(sv, lsave + len, leftlen - len); else *SvEND(sv) = '\0'; break; @@ -1331,77 +1227,61 @@ finish: OP * Perl_do_kv(pTHX) { + dVAR; dSP; - HV *hv = (HV*)POPs; - HV *keys; - register HE *entry; + HV * const keys = MUTABLE_HV(POPs); + HE *entry; const I32 gimme = GIMME_V; const I32 dokv = (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV); - const I32 dokeys = dokv || (PL_op->op_type == OP_KEYS); - const I32 dovalues = dokv || (PL_op->op_type == OP_VALUES); + /* op_type is OP_RKEYS/OP_RVALUES if pp_rkeys delegated to here */ + const I32 dokeys = dokv || (PL_op->op_type == OP_KEYS || PL_op->op_type == OP_RKEYS); + const I32 dovalues = dokv || (PL_op->op_type == OP_VALUES || PL_op->op_type == OP_RVALUES); - if (!hv) { - if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */ - dTARGET; /* make sure to clear its target here */ - if (SvTYPE(TARG) == SVt_PVLV) - LvTARG(TARG) = Nullsv; - PUSHs(TARG); - } - RETURN; - } - - keys = hv; (void)hv_iterinit(keys); /* always reset iterator regardless */ if (gimme == G_VOID) RETURN; if (gimme == G_SCALAR) { - IV i; - dTARGET; - if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */ - if (SvTYPE(TARG) < SVt_PVLV) { - sv_upgrade(TARG, SVt_PVLV); - sv_magic(TARG, Nullsv, PERL_MAGIC_nkeys, Nullch, 0); - } - LvTYPE(TARG) = 'k'; - if (LvTARG(TARG) != (SV*)keys) { - if (LvTARG(TARG)) - SvREFCNT_dec(LvTARG(TARG)); - LvTARG(TARG) = SvREFCNT_inc(keys); - } - PUSHs(TARG); - RETURN; + SV * const ret = sv_2mortal(newSV_type(SVt_PVLV)); /* Not TARG RT#67838 */ + sv_magic(ret, NULL, PERL_MAGIC_nkeys, NULL, 0); + LvTYPE(ret) = 'k'; + LvTARG(ret) = SvREFCNT_inc_simple(keys); + PUSHs(ret); } - - if (! SvTIED_mg((SV*)keys, PERL_MAGIC_tied)) - i = HvKEYS(keys); else { - i = 0; - /*SUPPRESS 560*/ - while (hv_iternext(keys)) i++; + IV i; + dTARGET; + + if (! SvTIED_mg((const SV *)keys, PERL_MAGIC_tied) ) { + i = HvUSEDKEYS(keys); + } + else { + i = 0; + while (hv_iternext(keys)) i++; + } + PUSHi( i ); } - PUSHi( i ); RETURN; } - EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues)); + EXTEND(SP, HvUSEDKEYS(keys) * (dokeys + dovalues)); PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */ while ((entry = hv_iternext(keys))) { SPAGAIN; if (dokeys) { - SV* sv = hv_iterkeysv(entry); + SV* const sv = hv_iterkeysv(entry); XPUSHs(sv); /* won't clobber stack_sp */ } if (dovalues) { SV *tmpstr; PUTBACK; - tmpstr = hv_iterval(hv,entry); + tmpstr = hv_iterval(keys,entry); DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu", (unsigned long)HeHASH(entry), - HvMAX(keys)+1, + (int)HvMAX(keys)+1, (unsigned long)(HeHASH(entry) & HvMAX(keys)))); SPAGAIN; XPUSHs(tmpstr); @@ -1415,8 +1295,8 @@ Perl_do_kv(pTHX) * Local variables: * c-indentation-style: bsd * c-basic-offset: 4 - * indent-tabs-mode: t + * indent-tabs-mode: nil * End: * - * ex: set ts=8 sts=4 sw=4 noet: + * ex: set ts=8 sts=4 sw=4 et: */