/* pp.c * * Copyright (c) 1991-2001, Larry Wall * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. * */ /* * "It's a big house this, and very peculiar. Always a bit more to discover, * and no knowing what you'll find around a corner. And Elves, sir!" --Samwise */ #include "EXTERN.h" #define PERL_IN_PP_C #include "perl.h" /* variations on pp_null */ /* XXX I can't imagine anyone who doesn't have this actually _needs_ it, since pid_t is an integral type. --AD 2/20/1998 */ #ifdef NEED_GETPID_PROTO extern Pid_t getpid (void); #endif PP(pp_stub) { dSP; if (GIMME_V == G_SCALAR) XPUSHs(&PL_sv_undef); RETURN; } PP(pp_scalar) { return NORMAL; } /* Pushy stuff. */ PP(pp_padav) { dSP; dTARGET; if (PL_op->op_private & OPpLVAL_INTRO) SAVECLEARSV(PL_curpad[PL_op->op_targ]); EXTEND(SP, 1); if (PL_op->op_flags & OPf_REF) { PUSHs(TARG); RETURN; } else if (LVRET) { if (GIMME == G_SCALAR) Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); PUSHs(TARG); RETURN; } if (GIMME == G_ARRAY) { I32 maxarg = AvFILL((AV*)TARG) + 1; EXTEND(SP, maxarg); if (SvMAGICAL(TARG)) { U32 i; for (i=0; i < maxarg; i++) { SV **svp = av_fetch((AV*)TARG, i, FALSE); SP[i+1] = (svp) ? *svp : &PL_sv_undef; } } else { Copy(AvARRAY((AV*)TARG), SP+1, maxarg, SV*); } SP += maxarg; } else { SV* sv = sv_newmortal(); I32 maxarg = AvFILL((AV*)TARG) + 1; sv_setiv(sv, maxarg); PUSHs(sv); } RETURN; } PP(pp_padhv) { dSP; dTARGET; I32 gimme; XPUSHs(TARG); if (PL_op->op_private & OPpLVAL_INTRO) SAVECLEARSV(PL_curpad[PL_op->op_targ]); if (PL_op->op_flags & OPf_REF) RETURN; else if (LVRET) { if (GIMME == G_SCALAR) Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); RETURN; } gimme = GIMME_V; if (gimme == G_ARRAY) { RETURNOP(do_kv()); } else if (gimme == G_SCALAR) { SV* sv = sv_newmortal(); if (HvFILL((HV*)TARG)) Perl_sv_setpvf(aTHX_ sv, "%ld/%ld", (long)HvFILL((HV*)TARG), (long)HvMAX((HV*)TARG) + 1); else sv_setiv(sv, 0); SETs(sv); } RETURN; } PP(pp_padany) { DIE(aTHX_ "NOT IMPL LINE %d",__LINE__); } /* Translations. */ PP(pp_rv2gv) { dSP; dTOPss; if (SvROK(sv)) { wasref: tryAMAGICunDEREF(to_gv); sv = SvRV(sv); if (SvTYPE(sv) == SVt_PVIO) { GV *gv = (GV*) sv_newmortal(); gv_init(gv, 0, "", 0, 0); GvIOp(gv) = (IO *)sv; (void)SvREFCNT_inc(sv); sv = (SV*) gv; } else if (SvTYPE(sv) != SVt_PVGV) DIE(aTHX_ "Not a GLOB reference"); } else { if (SvTYPE(sv) != SVt_PVGV) { char *sym; STRLEN len; if (SvGMAGICAL(sv)) { mg_get(sv); if (SvROK(sv)) goto wasref; } if (!SvOK(sv) && sv != &PL_sv_undef) { /* If this is a 'my' scalar and flag is set then vivify * NI-S 1999/05/07 */ if (PL_op->op_private & OPpDEREF) { char *name; GV *gv; if (cUNOP->op_targ) { STRLEN len; SV *namesv = PL_curpad[cUNOP->op_targ]; name = SvPV(namesv, len); gv = (GV*)NEWSV(0,0); gv_init(gv, CopSTASH(PL_curcop), name, len, 0); } else { name = CopSTASHPV(PL_curcop); gv = newGVgen(name); } if (SvTYPE(sv) < SVt_RV) sv_upgrade(sv, SVt_RV); SvRV(sv) = (SV*)gv; SvROK_on(sv); SvSETMAGIC(sv); goto wasref; } if (PL_op->op_flags & OPf_REF || PL_op->op_private & HINT_STRICT_REFS) DIE(aTHX_ PL_no_usym, "a symbol"); if (ckWARN(WARN_UNINITIALIZED)) report_uninit(); RETSETUNDEF; } sym = SvPV(sv,len); if ((PL_op->op_flags & OPf_SPECIAL) && !(PL_op->op_flags & OPf_MOD)) { sv = (SV*)gv_fetchpv(sym, FALSE, SVt_PVGV); if (!sv && (!is_gv_magical(sym,len,0) || !(sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVGV)))) { RETSETUNDEF; } } else { if (PL_op->op_private & HINT_STRICT_REFS) DIE(aTHX_ PL_no_symref, sym, "a symbol"); sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVGV); } } } if (PL_op->op_private & OPpLVAL_INTRO) save_gp((GV*)sv, !(PL_op->op_flags & OPf_SPECIAL)); SETs(sv); RETURN; } PP(pp_rv2sv) { dSP; dTOPss; if (SvROK(sv)) { wasref: tryAMAGICunDEREF(to_sv); sv = SvRV(sv); switch (SvTYPE(sv)) { case SVt_PVAV: case SVt_PVHV: case SVt_PVCV: DIE(aTHX_ "Not a SCALAR reference"); } } else { GV *gv = (GV*)sv; char *sym; STRLEN len; if (SvTYPE(gv) != SVt_PVGV) { if (SvGMAGICAL(sv)) { mg_get(sv); if (SvROK(sv)) goto wasref; } if (!SvOK(sv)) { if (PL_op->op_flags & OPf_REF || PL_op->op_private & HINT_STRICT_REFS) DIE(aTHX_ PL_no_usym, "a SCALAR"); if (ckWARN(WARN_UNINITIALIZED)) report_uninit(); RETSETUNDEF; } sym = SvPV(sv, len); if ((PL_op->op_flags & OPf_SPECIAL) && !(PL_op->op_flags & OPf_MOD)) { gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PV); if (!gv && (!is_gv_magical(sym,len,0) || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PV)))) { RETSETUNDEF; } } else { if (PL_op->op_private & HINT_STRICT_REFS) DIE(aTHX_ PL_no_symref, sym, "a SCALAR"); gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PV); } } sv = GvSV(gv); } if (PL_op->op_flags & OPf_MOD) { if (PL_op->op_private & OPpLVAL_INTRO) sv = save_scalar((GV*)TOPs); else if (PL_op->op_private & OPpDEREF) vivify_ref(sv, PL_op->op_private & OPpDEREF); } SETs(sv); RETURN; } PP(pp_av2arylen) { dSP; AV *av = (AV*)TOPs; SV *sv = AvARYLEN(av); if (!sv) { AvARYLEN(av) = sv = NEWSV(0,0); sv_upgrade(sv, SVt_IV); sv_magic(sv, (SV*)av, PERL_MAGIC_arylen, Nullch, 0); } SETs(sv); RETURN; } PP(pp_pos) { dSP; dTARGET; dPOPss; if (PL_op->op_flags & OPf_MOD || LVRET) { if (SvTYPE(TARG) < SVt_PVLV) { sv_upgrade(TARG, SVt_PVLV); sv_magic(TARG, Nullsv, PERL_MAGIC_pos, Nullch, 0); } LvTYPE(TARG) = '.'; if (LvTARG(TARG) != sv) { if (LvTARG(TARG)) SvREFCNT_dec(LvTARG(TARG)); LvTARG(TARG) = SvREFCNT_inc(sv); } PUSHs(TARG); /* no SvSETMAGIC */ RETURN; } else { MAGIC* mg; if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { mg = mg_find(sv, PERL_MAGIC_regex_global); if (mg && mg->mg_len >= 0) { I32 i = mg->mg_len; if (DO_UTF8(sv)) sv_pos_b2u(sv, &i); PUSHi(i + PL_curcop->cop_arybase); RETURN; } } RETPUSHUNDEF; } } PP(pp_rv2cv) { dSP; GV *gv; HV *stash; /* We usually try to add a non-existent subroutine in case of AUTOLOAD. */ /* (But not in defined().) */ CV *cv = sv_2cv(TOPs, &stash, &gv, !(PL_op->op_flags & OPf_SPECIAL)); if (cv) { if (CvCLONE(cv)) cv = (CV*)sv_2mortal((SV*)cv_clone(cv)); if ((PL_op->op_private & OPpLVAL_INTRO)) { if (gv && GvCV(gv) == cv && (gv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), FALSE))) cv = GvCV(gv); if (!CvLVALUE(cv)) DIE(aTHX_ "Can't modify non-lvalue subroutine call"); } } else cv = (CV*)&PL_sv_undef; SETs((SV*)cv); RETURN; } PP(pp_prototype) { dSP; CV *cv; HV *stash; GV *gv; SV *ret; ret = &PL_sv_undef; if (SvPOK(TOPs) && SvCUR(TOPs) >= 7) { char *s = SvPVX(TOPs); if (strnEQ(s, "CORE::", 6)) { int code; code = keyword(s + 6, SvCUR(TOPs) - 6); if (code < 0) { /* Overridable. */ #define MAX_ARGS_OP ((sizeof(I32) - 1) * 2) int i = 0, n = 0, seen_question = 0; I32 oa; char str[ MAX_ARGS_OP * 2 + 2 ]; /* One ';', one '\0' */ while (i < MAXO) { /* The slow way. */ if (strEQ(s + 6, PL_op_name[i]) || strEQ(s + 6, PL_op_desc[i])) { goto found; } i++; } goto nonesuch; /* Should not happen... */ found: oa = PL_opargs[i] >> OASHIFT; while (oa) { if (oa & OA_OPTIONAL && !seen_question) { seen_question = 1; str[n++] = ';'; } else if (n && str[0] == ';' && seen_question) goto set; /* XXXX system, exec */ if ((oa & (OA_OPTIONAL - 1)) >= OA_AVREF && (oa & (OA_OPTIONAL - 1)) <= OA_SCALARREF /* But globs are already references (kinda) */ && (oa & (OA_OPTIONAL - 1)) != OA_FILEREF ) { str[n++] = '\\'; } str[n++] = ("?$@@%&*$")[oa & (OA_OPTIONAL - 1)]; oa = oa >> 4; } str[n++] = '\0'; ret = sv_2mortal(newSVpvn(str, n - 1)); } else if (code) /* Non-Overridable */ goto set; else { /* None such */ nonesuch: DIE(aTHX_ "Can't find an opnumber for \"%s\"", s+6); } } } cv = sv_2cv(TOPs, &stash, &gv, FALSE); if (cv && SvPOK(cv)) ret = sv_2mortal(newSVpvn(SvPVX(cv), SvCUR(cv))); set: SETs(ret); RETURN; } PP(pp_anoncode) { dSP; CV* cv = (CV*)PL_curpad[PL_op->op_targ]; if (CvCLONE(cv)) cv = (CV*)sv_2mortal((SV*)cv_clone(cv)); EXTEND(SP,1); PUSHs((SV*)cv); RETURN; } PP(pp_srefgen) { dSP; *SP = refto(*SP); RETURN; } PP(pp_refgen) { dSP; dMARK; if (GIMME != G_ARRAY) { if (++MARK <= SP) *MARK = *SP; else *MARK = &PL_sv_undef; *MARK = refto(*MARK); SP = MARK; RETURN; } EXTEND_MORTAL(SP - MARK); while (++MARK <= SP) *MARK = refto(*MARK); RETURN; } STATIC SV* S_refto(pTHX_ SV *sv) { SV* rv; if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y') { if (LvTARGLEN(sv)) vivify_defelem(sv); if (!(sv = LvTARG(sv))) sv = &PL_sv_undef; else (void)SvREFCNT_inc(sv); } else if (SvTYPE(sv) == SVt_PVAV) { if (!AvREAL((AV*)sv) && AvREIFY((AV*)sv)) av_reify((AV*)sv); SvTEMP_off(sv); (void)SvREFCNT_inc(sv); } else if (SvPADTMP(sv) && !IS_PADGV(sv)) sv = newSVsv(sv); else { SvTEMP_off(sv); (void)SvREFCNT_inc(sv); } rv = sv_newmortal(); sv_upgrade(rv, SVt_RV); SvRV(rv) = sv; SvROK_on(rv); return rv; } PP(pp_ref) { dSP; dTARGET; SV *sv; char *pv; sv = POPs; if (sv && SvGMAGICAL(sv)) mg_get(sv); if (!sv || !SvROK(sv)) RETPUSHNO; sv = SvRV(sv); pv = sv_reftype(sv,TRUE); PUSHp(pv, strlen(pv)); RETURN; } PP(pp_bless) { dSP; HV *stash; if (MAXARG == 1) stash = CopSTASH(PL_curcop); else { SV *ssv = POPs; STRLEN len; char *ptr; if (ssv && !SvGMAGICAL(ssv) && !SvAMAGIC(ssv) && SvROK(ssv)) Perl_croak(aTHX_ "Attempt to bless into a reference"); ptr = SvPV(ssv,len); if (ckWARN(WARN_MISC) && len == 0) Perl_warner(aTHX_ WARN_MISC, "Explicit blessing to '' (assuming package main)"); stash = gv_stashpvn(ptr, len, TRUE); } (void)sv_bless(TOPs, stash); RETURN; } PP(pp_gelem) { GV *gv; SV *sv; SV *tmpRef; char *elem; dSP; STRLEN n_a; sv = POPs; elem = SvPV(sv, n_a); gv = (GV*)POPs; tmpRef = Nullsv; sv = Nullsv; switch (elem ? *elem : '\0') { case 'A': if (strEQ(elem, "ARRAY")) tmpRef = (SV*)GvAV(gv); break; case 'C': if (strEQ(elem, "CODE")) tmpRef = (SV*)GvCVu(gv); break; case 'F': if (strEQ(elem, "FILEHANDLE")) { /* finally deprecated in 5.8.0 */ deprecate("*glob{FILEHANDLE}"); tmpRef = (SV*)GvIOp(gv); } else if (strEQ(elem, "FORMAT")) tmpRef = (SV*)GvFORM(gv); break; case 'G': if (strEQ(elem, "GLOB")) tmpRef = (SV*)gv; break; case 'H': if (strEQ(elem, "HASH")) tmpRef = (SV*)GvHV(gv); break; case 'I': if (strEQ(elem, "IO")) tmpRef = (SV*)GvIOp(gv); break; case 'N': if (strEQ(elem, "NAME")) sv = newSVpvn(GvNAME(gv), GvNAMELEN(gv)); break; case 'P': if (strEQ(elem, "PACKAGE")) sv = newSVpv(HvNAME(GvSTASH(gv)), 0); break; case 'S': if (strEQ(elem, "SCALAR")) tmpRef = GvSV(gv); break; } if (tmpRef) sv = newRV(tmpRef); if (sv) sv_2mortal(sv); else sv = &PL_sv_undef; XPUSHs(sv); RETURN; } /* Pattern matching */ PP(pp_study) { dSP; dPOPss; register unsigned char *s; register I32 pos; register I32 ch; register I32 *sfirst; register I32 *snext; STRLEN len; if (sv == PL_lastscream) { if (SvSCREAM(sv)) RETPUSHYES; } else { if (PL_lastscream) { SvSCREAM_off(PL_lastscream); SvREFCNT_dec(PL_lastscream); } PL_lastscream = SvREFCNT_inc(sv); } s = (unsigned char*)(SvPV(sv, len)); pos = len; if (pos <= 0) RETPUSHNO; if (pos > PL_maxscream) { if (PL_maxscream < 0) { PL_maxscream = pos + 80; New(301, PL_screamfirst, 256, I32); New(302, PL_screamnext, PL_maxscream, I32); } else { PL_maxscream = pos + pos / 4; Renew(PL_screamnext, PL_maxscream, I32); } } sfirst = PL_screamfirst; snext = PL_screamnext; if (!sfirst || !snext) DIE(aTHX_ "do_study: out of memory"); for (ch = 256; ch; --ch) *sfirst++ = -1; sfirst -= 256; while (--pos >= 0) { ch = s[pos]; if (sfirst[ch] >= 0) snext[pos] = sfirst[ch] - pos; else snext[pos] = -pos; sfirst[ch] = pos; } SvSCREAM_on(sv); /* piggyback on m//g magic */ sv_magic(sv, Nullsv, PERL_MAGIC_regex_global, Nullch, 0); RETPUSHYES; } PP(pp_trans) { dSP; dTARG; SV *sv; if (PL_op->op_flags & OPf_STACKED) sv = POPs; else { sv = DEFSV; EXTEND(SP,1); } TARG = sv_newmortal(); PUSHi(do_trans(sv)); RETURN; } /* Lvalue operators. */ PP(pp_schop) { dSP; dTARGET; do_chop(TARG, TOPs); SETTARG; RETURN; } PP(pp_chop) { dSP; dMARK; dTARGET; dORIGMARK; while (MARK < SP) do_chop(TARG, *++MARK); SP = ORIGMARK; PUSHTARG; RETURN; } PP(pp_schomp) { dSP; dTARGET; SETi(do_chomp(TOPs)); RETURN; } PP(pp_chomp) { dSP; dMARK; dTARGET; register I32 count = 0; while (SP > MARK) count += do_chomp(POPs); PUSHi(count); RETURN; } PP(pp_defined) { dSP; register SV* sv; sv = POPs; if (!sv || !SvANY(sv)) RETPUSHNO; switch (SvTYPE(sv)) { case SVt_PVAV: if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) RETPUSHYES; break; case SVt_PVHV: if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) RETPUSHYES; break; case SVt_PVCV: if (CvROOT(sv) || CvXSUB(sv)) RETPUSHYES; break; default: if (SvGMAGICAL(sv)) mg_get(sv); if (SvOK(sv)) RETPUSHYES; } RETPUSHNO; } PP(pp_undef) { dSP; SV *sv; if (!PL_op->op_private) { EXTEND(SP, 1); RETPUSHUNDEF; } sv = POPs; if (!sv) RETPUSHUNDEF; if (SvTHINKFIRST(sv)) sv_force_normal(sv); switch (SvTYPE(sv)) { case SVt_NULL: break; case SVt_PVAV: av_undef((AV*)sv); break; case SVt_PVHV: hv_undef((HV*)sv); break; case SVt_PVCV: if (ckWARN(WARN_MISC) && cv_const_sv((CV*)sv)) Perl_warner(aTHX_ WARN_MISC, "Constant subroutine %s undefined", CvANON((CV*)sv) ? "(anonymous)" : GvENAME(CvGV((CV*)sv))); /* FALL THROUGH */ case SVt_PVFM: { /* let user-undef'd sub keep its identity */ GV* gv = CvGV((CV*)sv); cv_undef((CV*)sv); CvGV((CV*)sv) = gv; } break; case SVt_PVGV: if (SvFAKE(sv)) SvSetMagicSV(sv, &PL_sv_undef); else { GP *gp; gp_free((GV*)sv); Newz(602, gp, 1, GP); GvGP(sv) = gp_ref(gp); GvSV(sv) = NEWSV(72,0); GvLINE(sv) = CopLINE(PL_curcop); GvEGV(sv) = (GV*)sv; GvMULTI_on(sv); } break; default: if (SvTYPE(sv) >= SVt_PV && SvPVX(sv) && SvLEN(sv)) { (void)SvOOK_off(sv); Safefree(SvPVX(sv)); SvPV_set(sv, Nullch); SvLEN_set(sv, 0); } (void)SvOK_off(sv); SvSETMAGIC(sv); } RETPUSHUNDEF; } PP(pp_predec) { dSP; if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV) DIE(aTHX_ PL_no_modify); if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) && SvIVX(TOPs) != IV_MIN) { --SvIVX(TOPs); SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); } else sv_dec(TOPs); SvSETMAGIC(TOPs); return NORMAL; } PP(pp_postinc) { dSP; dTARGET; if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV) DIE(aTHX_ PL_no_modify); sv_setsv(TARG, TOPs); if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) && SvIVX(TOPs) != IV_MAX) { ++SvIVX(TOPs); SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); } else sv_inc(TOPs); SvSETMAGIC(TOPs); if (!SvOK(TARG)) sv_setiv(TARG, 0); SETs(TARG); return NORMAL; } PP(pp_postdec) { dSP; dTARGET; if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV) DIE(aTHX_ PL_no_modify); sv_setsv(TARG, TOPs); if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) && SvIVX(TOPs) != IV_MIN) { --SvIVX(TOPs); SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); } else sv_dec(TOPs); SvSETMAGIC(TOPs); SETs(TARG); return NORMAL; } /* Ordinary operators. */ PP(pp_pow) { dSP; dATARGET; tryAMAGICbin(pow,opASSIGN); { dPOPTOPnnrl; SETn( Perl_pow( left, right) ); RETURN; } } PP(pp_multiply) { dSP; dATARGET; tryAMAGICbin(mult,opASSIGN); #ifdef PERL_PRESERVE_IVUV SvIV_please(TOPs); if (SvIOK(TOPs)) { /* Unless the left argument is integer in range we are going to have to use NV maths. Hence only attempt to coerce the right argument if we know the left is integer. */ /* Left operand is defined, so is it IV? */ SvIV_please(TOPm1s); if (SvIOK(TOPm1s)) { bool auvok = SvUOK(TOPm1s); bool buvok = SvUOK(TOPs); const UV topmask = (~ (UV)0) << (4 * sizeof (UV)); const UV botmask = ~((~ (UV)0) << (4 * sizeof (UV))); UV alow; UV ahigh; UV blow; UV bhigh; if (auvok) { alow = SvUVX(TOPm1s); } else { IV aiv = SvIVX(TOPm1s); if (aiv >= 0) { alow = aiv; auvok = TRUE; /* effectively it's a UV now */ } else { alow = -aiv; /* abs, auvok == false records sign */ } } if (buvok) { blow = SvUVX(TOPs); } else { IV biv = SvIVX(TOPs); if (biv >= 0) { blow = biv; buvok = TRUE; /* effectively it's a UV now */ } else { blow = -biv; /* abs, buvok == false records sign */ } } /* If this does sign extension on unsigned it's time for plan B */ ahigh = alow >> (4 * sizeof (UV)); alow &= botmask; bhigh = blow >> (4 * sizeof (UV)); blow &= botmask; if (ahigh && bhigh) { /* eg 32 bit is at least 0x10000 * 0x10000 == 0x100000000 which is overflow. Drop to NVs below. */ } else if (!ahigh && !bhigh) { /* eg 32 bit is at most 0xFFFF * 0xFFFF == 0xFFFE0001 so the unsigned multiply cannot overflow. */ UV product = alow * blow; if (auvok == buvok) { /* -ve * -ve or +ve * +ve gives a +ve result. */ SP--; SETu( product ); RETURN; } else if (product <= (UV)IV_MIN) { /* 2s complement assumption that (UV)-IV_MIN is correct. */ /* -ve result, which could overflow an IV */ SP--; SETi( -(IV)product ); RETURN; } /* else drop to NVs below. */ } else { /* One operand is large, 1 small */ UV product_middle; if (bhigh) { /* swap the operands */ ahigh = bhigh; bhigh = blow; /* bhigh now the temp var for the swap */ blow = alow; alow = bhigh; } /* now, ((ahigh * blow) << half_UV_len) + (alow * blow) multiplies can't overflow. shift can, add can, -ve can. */ product_middle = ahigh * blow; if (!(product_middle & topmask)) { /* OK, (ahigh * blow) won't lose bits when we shift it. */ UV product_low; product_middle <<= (4 * sizeof (UV)); product_low = alow * blow; /* as for pp_add, UV + something mustn't get smaller. IIRC ANSI mandates this wrapping *behaviour* for unsigned whatever the actual representation*/ product_low += product_middle; if (product_low >= product_middle) { /* didn't overflow */ if (auvok == buvok) { /* -ve * -ve or +ve * +ve gives a +ve result. */ SP--; SETu( product_low ); RETURN; } else if (product_low <= (UV)IV_MIN) { /* 2s complement assumption again */ /* -ve result, which could overflow an IV */ SP--; SETi( -(IV)product_low ); RETURN; } /* else drop to NVs below. */ } } /* product_middle too large */ } /* ahigh && bhigh */ } /* SvIOK(TOPm1s) */ } /* SvIOK(TOPs) */ #endif { dPOPTOPnnrl; SETn( left * right ); RETURN; } } PP(pp_divide) { dSP; dATARGET; tryAMAGICbin(div,opASSIGN); /* Only try to do UV divide first if ((SLOPPYDIVIDE is true) or (PERL_PRESERVE_IVUV is true and one or both SV is a UV too large to preserve)) The assumption is that it is better to use floating point divide whenever possible, only doing integer divide first if we can't be sure. If NV_PRESERVES_UV is true then we know at compile time that no UV can be too large to preserve, so don't need to compile the code to test the size of UVs. */ #ifdef SLOPPYDIVIDE # define PERL_TRY_UV_DIVIDE /* ensure that 20./5. == 4. */ #else # ifdef PERL_PRESERVE_IVUV # ifndef NV_PRESERVES_UV # define PERL_TRY_UV_DIVIDE # endif # endif #endif #ifdef PERL_TRY_UV_DIVIDE SvIV_please(TOPs); if (SvIOK(TOPs)) { SvIV_please(TOPm1s); if (SvIOK(TOPm1s)) { bool left_non_neg = SvUOK(TOPm1s); bool right_non_neg = SvUOK(TOPs); UV left; UV right; if (right_non_neg) { right = SvUVX(TOPs); } else { IV biv = SvIVX(TOPs); if (biv >= 0) { right = biv; right_non_neg = TRUE; /* effectively it's a UV now */ } else { right = -biv; } } /* historically undef()/0 gives a "Use of uninitialized value" warning before dieing, hence this test goes here. If it were immediately before the second SvIV_please, then DIE() would be invoked before left was even inspected, so no inpsection would give no warning. */ if (right == 0) DIE(aTHX_ "Illegal division by zero"); if (left_non_neg) { left = SvUVX(TOPm1s); } else { IV aiv = SvIVX(TOPm1s); if (aiv >= 0) { left = aiv; left_non_neg = TRUE; /* effectively it's a UV now */ } else { left = -aiv; } } if (left >= right #ifdef SLOPPYDIVIDE /* For sloppy divide we always attempt integer division. */ #else /* Otherwise we only attempt it if either or both operands would not be preserved by an NV. If both fit in NVs we fall through to the NV divide code below. */ && ((left > ((UV)1 << NV_PRESERVES_UV_BITS)) || (right > ((UV)1 << NV_PRESERVES_UV_BITS))) #endif ) { /* Integer division can't overflow, but it can be imprecise. */ UV result = left / right; if (result * right == left) { SP--; /* result is valid */ if (left_non_neg == right_non_neg) { /* signs identical, result is positive. */ SETu( result ); RETURN; } /* 2s complement assumption */ if (result <= (UV)IV_MIN) SETi( -result ); else { /* It's exact but too negative for IV. */ SETn( -(NV)result ); } RETURN; } /* tried integer divide but it was not an integer result */ } /* else (abs(result) < 1.0) or (both UVs in range for NV) */ } /* left wasn't SvIOK */ } /* right wasn't SvIOK */ #endif /* PERL_TRY_UV_DIVIDE */ { dPOPPOPnnrl; if (right == 0.0) DIE(aTHX_ "Illegal division by zero"); PUSHn( left / right ); RETURN; } } PP(pp_modulo) { dSP; dATARGET; tryAMAGICbin(modulo,opASSIGN); { UV left = 0; UV right = 0; bool left_neg; bool right_neg; bool use_double = FALSE; bool dright_valid = FALSE; NV dright = 0.0; NV dleft = 0.0; SvIV_please(TOPs); if (SvIOK(TOPs)) { right_neg = !SvUOK(TOPs); if (!right_neg) { right = SvUVX(POPs); } else { IV biv = SvIVX(POPs); if (biv >= 0) { right = biv; right_neg = FALSE; /* effectively it's a UV now */ } else { right = -biv; } } } else { dright = POPn; right_neg = dright < 0; if (right_neg) dright = -dright; if (dright < UV_MAX_P1) { right = U_V(dright); dright_valid = TRUE; /* In case we need to use double below. */ } else { use_double = TRUE; } } /* At this point use_double is only true if right is out of range for a UV. In range NV has been rounded down to nearest UV and use_double false. */ SvIV_please(TOPs); if (!use_double && SvIOK(TOPs)) { if (SvIOK(TOPs)) { left_neg = !SvUOK(TOPs); if (!left_neg) { left = SvUVX(POPs); } else { IV aiv = SvIVX(POPs); if (aiv >= 0) { left = aiv; left_neg = FALSE; /* effectively it's a UV now */ } else { left = -aiv; } } } } else { dleft = POPn; left_neg = dleft < 0; if (left_neg) dleft = -dleft; /* This should be exactly the 5.6 behaviour - if left and right are both in range for UV then use U_V() rather than floor. */ if (!use_double) { if (dleft < UV_MAX_P1) { /* right was in range, so is dleft, so use UVs not double. */ left = U_V(dleft); } /* left is out of range for UV, right was in range, so promote right (back) to double. */ else { /* The +0.5 is used in 5.6 even though it is not strictly consistent with the implicit +0 floor in the U_V() inside the #if 1. */ dleft = Perl_floor(dleft + 0.5); use_double = TRUE; if (dright_valid) dright = Perl_floor(dright + 0.5); else dright = right; } } } if (use_double) { NV dans; if (!dright) DIE(aTHX_ "Illegal modulus zero"); dans = Perl_fmod(dleft, dright); if ((left_neg != right_neg) && dans) dans = dright - dans; if (right_neg) dans = -dans; sv_setnv(TARG, dans); } else { UV ans; if (!right) DIE(aTHX_ "Illegal modulus zero"); ans = left % right; if ((left_neg != right_neg) && ans) ans = right - ans; if (right_neg) { /* XXX may warn: unary minus operator applied to unsigned type */ /* could change -foo to be (~foo)+1 instead */ if (ans <= ~((UV)IV_MAX)+1) sv_setiv(TARG, ~ans+1); else sv_setnv(TARG, -(NV)ans); } else sv_setuv(TARG, ans); } PUSHTARG; RETURN; } } PP(pp_repeat) { dSP; dATARGET; tryAMAGICbin(repeat,opASSIGN); { register IV count = POPi; if (GIMME == G_ARRAY && PL_op->op_private & OPpREPEAT_DOLIST) { dMARK; I32 items = SP - MARK; I32 max; max = items * count; MEXTEND(MARK, max); if (count > 1) { while (SP > MARK) { if (*SP) { *SP = sv_2mortal(newSVsv(*SP)); SvREADONLY_on(*SP); } SP--; } MARK++; repeatcpy((char*)(MARK + items), (char*)MARK, items * sizeof(SV*), count - 1); SP += max; } else if (count <= 0) SP -= items; } else { /* Note: mark already snarfed by pp_list */ SV *tmpstr = POPs; STRLEN len; bool isutf; SvSetSV(TARG, tmpstr); SvPV_force(TARG, len); isutf = DO_UTF8(TARG); if (count != 1) { if (count < 1) SvCUR_set(TARG, 0); else { SvGROW(TARG, (count * len) + 1); repeatcpy(SvPVX(TARG) + len, SvPVX(TARG), len, count - 1); SvCUR(TARG) *= count; } *SvEND(TARG) = '\0'; } if (isutf) (void)SvPOK_only_UTF8(TARG); else (void)SvPOK_only(TARG); if (PL_op->op_private & OPpREPEAT_DOLIST) { /* The parser saw this as a list repeat, and there are probably several items on the stack. But we're in scalar context, and there's no pp_list to save us now. So drop the rest of the items -- robin@kitsite.com */ dMARK; SP = MARK; } PUSHTARG; } RETURN; } } PP(pp_subtract) { dSP; dATARGET; bool useleft; tryAMAGICbin(subtr,opASSIGN); useleft = USE_LEFT(TOPm1s); #ifdef PERL_PRESERVE_IVUV /* See comments in pp_add (in pp_hot.c) about Overflow, and how "bad things" happen if you rely on signed integers wrapping. */ SvIV_please(TOPs); if (SvIOK(TOPs)) { /* Unless the left argument is integer in range we are going to have to use NV maths. Hence only attempt to coerce the right argument if we know the left is integer. */ register UV auv = 0; bool auvok = FALSE; bool a_valid = 0; if (!useleft) { auv = 0; a_valid = auvok = 1; /* left operand is undef, treat as zero. */ } else { /* Left operand is defined, so is it IV? */ SvIV_please(TOPm1s); if (SvIOK(TOPm1s)) { if ((auvok = SvUOK(TOPm1s))) auv = SvUVX(TOPm1s); else { register IV aiv = SvIVX(TOPm1s); if (aiv >= 0) { auv = aiv; auvok = 1; /* Now acting as a sign flag. */ } else { /* 2s complement assumption for IV_MIN */ auv = (UV)-aiv; } } a_valid = 1; } } if (a_valid) { bool result_good = 0; UV result; register UV buv; bool buvok = SvUOK(TOPs); if (buvok) buv = SvUVX(TOPs); else { register IV biv = SvIVX(TOPs); if (biv >= 0) { buv = biv; buvok = 1; } else buv = (UV)-biv; } /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, else "IV" now, independant of how it came in. if a, b represents positive, A, B negative, a maps to -A etc a - b => (a - b) A - b => -(a + b) a - B => (a + b) A - B => -(a - b) all UV maths. negate result if A negative. subtract if signs same, add if signs differ. */ if (auvok ^ buvok) { /* Signs differ. */ result = auv + buv; if (result >= auv) result_good = 1; } else { /* Signs same */ if (auv >= buv) { result = auv - buv; /* Must get smaller */ if (result <= auv) result_good = 1; } else { result = buv - auv; if (result <= buv) { /* result really should be -(auv-buv). as its negation of true value, need to swap our result flag */ auvok = !auvok; result_good = 1; } } } if (result_good) { SP--; if (auvok) SETu( result ); else { /* Negate result */ if (result <= (UV)IV_MIN) SETi( -(IV)result ); else { /* result valid, but out of range for IV. */ SETn( -(NV)result ); } } RETURN; } /* Overflow, drop through to NVs. */ } } #endif useleft = USE_LEFT(TOPm1s); { dPOPnv; if (!useleft) { /* left operand is undef, treat as zero - value */ SETn(-value); RETURN; } SETn( TOPn - value ); RETURN; } } PP(pp_left_shift) { dSP; dATARGET; tryAMAGICbin(lshift,opASSIGN); { IV shift = POPi; if (PL_op->op_private & HINT_INTEGER) { IV i = TOPi; SETi(i << shift); } else { UV u = TOPu; SETu(u << shift); } RETURN; } } PP(pp_right_shift) { dSP; dATARGET; tryAMAGICbin(rshift,opASSIGN); { IV shift = POPi; if (PL_op->op_private & HINT_INTEGER) { IV i = TOPi; SETi(i >> shift); } else { UV u = TOPu; SETu(u >> shift); } RETURN; } } PP(pp_lt) { dSP; tryAMAGICbinSET(lt,0); #ifdef PERL_PRESERVE_IVUV SvIV_please(TOPs); if (SvIOK(TOPs)) { SvIV_please(TOPm1s); if (SvIOK(TOPm1s)) { bool auvok = SvUOK(TOPm1s); bool buvok = SvUOK(TOPs); if (!auvok && !buvok) { /* ## IV < IV ## */ IV aiv = SvIVX(TOPm1s); IV biv = SvIVX(TOPs); SP--; SETs(boolSV(aiv < biv)); RETURN; } if (auvok && buvok) { /* ## UV < UV ## */ UV auv = SvUVX(TOPm1s); UV buv = SvUVX(TOPs); SP--; SETs(boolSV(auv < buv)); RETURN; } if (auvok) { /* ## UV < IV ## */ UV auv; IV biv; biv = SvIVX(TOPs); SP--; if (biv < 0) { /* As (a) is a UV, it's >=0, so it cannot be < */ SETs(&PL_sv_no); RETURN; } auv = SvUVX(TOPs); if (auv >= (UV) IV_MAX) { /* As (b) is an IV, it cannot be > IV_MAX */ SETs(&PL_sv_no); RETURN; } SETs(boolSV(auv < (UV)biv)); RETURN; } { /* ## IV < UV ## */ IV aiv; UV buv; aiv = SvIVX(TOPm1s); if (aiv < 0) { /* As (b) is a UV, it's >=0, so it must be < */ SP--; SETs(&PL_sv_yes); RETURN; } buv = SvUVX(TOPs); SP--; if (buv > (UV) IV_MAX) { /* As (a) is an IV, it cannot be > IV_MAX */ SETs(&PL_sv_yes); RETURN; } SETs(boolSV((UV)aiv < buv)); RETURN; } } } #endif { dPOPnv; SETs(boolSV(TOPn < value)); RETURN; } } PP(pp_gt) { dSP; tryAMAGICbinSET(gt,0); #ifdef PERL_PRESERVE_IVUV SvIV_please(TOPs); if (SvIOK(TOPs)) { SvIV_please(TOPm1s); if (SvIOK(TOPm1s)) { bool auvok = SvUOK(TOPm1s); bool buvok = SvUOK(TOPs); if (!auvok && !buvok) { /* ## IV > IV ## */ IV aiv = SvIVX(TOPm1s); IV biv = SvIVX(TOPs); SP--; SETs(boolSV(aiv > biv)); RETURN; } if (auvok && buvok) { /* ## UV > UV ## */ UV auv = SvUVX(TOPm1s); UV buv = SvUVX(TOPs); SP--; SETs(boolSV(auv > buv)); RETURN; } if (auvok) { /* ## UV > IV ## */ UV auv; IV biv; biv = SvIVX(TOPs); SP--; if (biv < 0) { /* As (a) is a UV, it's >=0, so it must be > */ SETs(&PL_sv_yes); RETURN; } auv = SvUVX(TOPs); if (auv > (UV) IV_MAX) { /* As (b) is an IV, it cannot be > IV_MAX */ SETs(&PL_sv_yes); RETURN; } SETs(boolSV(auv > (UV)biv)); RETURN; } { /* ## IV > UV ## */ IV aiv; UV buv; aiv = SvIVX(TOPm1s); if (aiv < 0) { /* As (b) is a UV, it's >=0, so it cannot be > */ SP--; SETs(&PL_sv_no); RETURN; } buv = SvUVX(TOPs); SP--; if (buv >= (UV) IV_MAX) { /* As (a) is an IV, it cannot be > IV_MAX */ SETs(&PL_sv_no); RETURN; } SETs(boolSV((UV)aiv > buv)); RETURN; } } } #endif { dPOPnv; SETs(boolSV(TOPn > value)); RETURN; } } PP(pp_le) { dSP; tryAMAGICbinSET(le,0); #ifdef PERL_PRESERVE_IVUV SvIV_please(TOPs); if (SvIOK(TOPs)) { SvIV_please(TOPm1s); if (SvIOK(TOPm1s)) { bool auvok = SvUOK(TOPm1s); bool buvok = SvUOK(TOPs); if (!auvok && !buvok) { /* ## IV <= IV ## */ IV aiv = SvIVX(TOPm1s); IV biv = SvIVX(TOPs); SP--; SETs(boolSV(aiv <= biv)); RETURN; } if (auvok && buvok) { /* ## UV <= UV ## */ UV auv = SvUVX(TOPm1s); UV buv = SvUVX(TOPs); SP--; SETs(boolSV(auv <= buv)); RETURN; } if (auvok) { /* ## UV <= IV ## */ UV auv; IV biv; biv = SvIVX(TOPs); SP--; if (biv < 0) { /* As (a) is a UV, it's >=0, so a cannot be <= */ SETs(&PL_sv_no); RETURN; } auv = SvUVX(TOPs); if (auv > (UV) IV_MAX) { /* As (b) is an IV, it cannot be > IV_MAX */ SETs(&PL_sv_no); RETURN; } SETs(boolSV(auv <= (UV)biv)); RETURN; } { /* ## IV <= UV ## */ IV aiv; UV buv; aiv = SvIVX(TOPm1s); if (aiv < 0) { /* As (b) is a UV, it's >=0, so a must be <= */ SP--; SETs(&PL_sv_yes); RETURN; } buv = SvUVX(TOPs); SP--; if (buv >= (UV) IV_MAX) { /* As (a) is an IV, it cannot be > IV_MAX */ SETs(&PL_sv_yes); RETURN; } SETs(boolSV((UV)aiv <= buv)); RETURN; } } } #endif { dPOPnv; SETs(boolSV(TOPn <= value)); RETURN; } } PP(pp_ge) { dSP; tryAMAGICbinSET(ge,0); #ifdef PERL_PRESERVE_IVUV SvIV_please(TOPs); if (SvIOK(TOPs)) { SvIV_please(TOPm1s); if (SvIOK(TOPm1s)) { bool auvok = SvUOK(TOPm1s); bool buvok = SvUOK(TOPs); if (!auvok && !buvok) { /* ## IV >= IV ## */ IV aiv = SvIVX(TOPm1s); IV biv = SvIVX(TOPs); SP--; SETs(boolSV(aiv >= biv)); RETURN; } if (auvok && buvok) { /* ## UV >= UV ## */ UV auv = SvUVX(TOPm1s); UV buv = SvUVX(TOPs); SP--; SETs(boolSV(auv >= buv)); RETURN; } if (auvok) { /* ## UV >= IV ## */ UV auv; IV biv; biv = SvIVX(TOPs); SP--; if (biv < 0) { /* As (a) is a UV, it's >=0, so it must be >= */ SETs(&PL_sv_yes); RETURN; } auv = SvUVX(TOPs); if (auv >= (UV) IV_MAX) { /* As (b) is an IV, it cannot be > IV_MAX */ SETs(&PL_sv_yes); RETURN; } SETs(boolSV(auv >= (UV)biv)); RETURN; } { /* ## IV >= UV ## */ IV aiv; UV buv; aiv = SvIVX(TOPm1s); if (aiv < 0) { /* As (b) is a UV, it's >=0, so a cannot be >= */ SP--; SETs(&PL_sv_no); RETURN; } buv = SvUVX(TOPs); SP--; if (buv > (UV) IV_MAX) { /* As (a) is an IV, it cannot be > IV_MAX */ SETs(&PL_sv_no); RETURN; } SETs(boolSV((UV)aiv >= buv)); RETURN; } } } #endif { dPOPnv; SETs(boolSV(TOPn >= value)); RETURN; } } PP(pp_ne) { dSP; tryAMAGICbinSET(ne,0); #ifndef NV_PRESERVES_UV if (SvROK(TOPs) && SvROK(TOPm1s)) { SETs(boolSV(SvRV(TOPs) != SvRV(TOPm1s))); RETURN; } #endif #ifdef PERL_PRESERVE_IVUV SvIV_please(TOPs); if (SvIOK(TOPs)) { SvIV_please(TOPm1s); if (SvIOK(TOPm1s)) { bool auvok = SvUOK(TOPm1s); bool buvok = SvUOK(TOPs); if (!auvok && !buvok) { /* ## IV <=> IV ## */ IV aiv = SvIVX(TOPm1s); IV biv = SvIVX(TOPs); SP--; SETs(boolSV(aiv != biv)); RETURN; } if (auvok && buvok) { /* ## UV != UV ## */ UV auv = SvUVX(TOPm1s); UV buv = SvUVX(TOPs); SP--; SETs(boolSV(auv != buv)); RETURN; } { /* ## Mixed IV,UV ## */ IV iv; UV uv; /* != is commutative so swap if needed (save code) */ if (auvok) { /* swap. top of stack (b) is the iv */ iv = SvIVX(TOPs); SP--; if (iv < 0) { /* As (a) is a UV, it's >0, so it cannot be == */ SETs(&PL_sv_yes); RETURN; } uv = SvUVX(TOPs); } else { iv = SvIVX(TOPm1s); SP--; if (iv < 0) { /* As (b) is a UV, it's >0, so it cannot be == */ SETs(&PL_sv_yes); RETURN; } uv = SvUVX(*(SP+1)); /* Do I want TOPp1s() ? */ } /* we know iv is >= 0 */ if (uv > (UV) IV_MAX) { SETs(&PL_sv_yes); RETURN; } SETs(boolSV((UV)iv != uv)); RETURN; } } } #endif { dPOPnv; SETs(boolSV(TOPn != value)); RETURN; } } PP(pp_ncmp) { dSP; dTARGET; tryAMAGICbin(ncmp,0); #ifndef NV_PRESERVES_UV if (SvROK(TOPs) && SvROK(TOPm1s)) { SETi(PTR2UV(SvRV(TOPs)) - PTR2UV(SvRV(TOPm1s))); RETURN; } #endif #ifdef PERL_PRESERVE_IVUV /* Fortunately it seems NaN isn't IOK */ SvIV_please(TOPs); if (SvIOK(TOPs)) { SvIV_please(TOPm1s); if (SvIOK(TOPm1s)) { bool leftuvok = SvUOK(TOPm1s); bool rightuvok = SvUOK(TOPs); I32 value; if (!leftuvok && !rightuvok) { /* ## IV <=> IV ## */ IV leftiv = SvIVX(TOPm1s); IV rightiv = SvIVX(TOPs); if (leftiv > rightiv) value = 1; else if (leftiv < rightiv) value = -1; else value = 0; } else if (leftuvok && rightuvok) { /* ## UV <=> UV ## */ UV leftuv = SvUVX(TOPm1s); UV rightuv = SvUVX(TOPs); if (leftuv > rightuv) value = 1; else if (leftuv < rightuv) value = -1; else value = 0; } else if (leftuvok) { /* ## UV <=> IV ## */ UV leftuv; IV rightiv; rightiv = SvIVX(TOPs); if (rightiv < 0) { /* As (a) is a UV, it's >=0, so it cannot be < */ value = 1; } else { leftuv = SvUVX(TOPm1s); if (leftuv > (UV) IV_MAX) { /* As (b) is an IV, it cannot be > IV_MAX */ value = 1; } else if (leftuv > (UV)rightiv) { value = 1; } else if (leftuv < (UV)rightiv) { value = -1; } else { value = 0; } } } else { /* ## IV <=> UV ## */ IV leftiv; UV rightuv; leftiv = SvIVX(TOPm1s); if (leftiv < 0) { /* As (b) is a UV, it's >=0, so it must be < */ value = -1; } else { rightuv = SvUVX(TOPs); if (rightuv > (UV) IV_MAX) { /* As (a) is an IV, it cannot be > IV_MAX */ value = -1; } else if (leftiv > (UV)rightuv) { value = 1; } else if (leftiv < (UV)rightuv) { value = -1; } else { value = 0; } } } SP--; SETi(value); RETURN; } } #endif { dPOPTOPnnrl; I32 value; #ifdef Perl_isnan if (Perl_isnan(left) || Perl_isnan(right)) { SETs(&PL_sv_undef); RETURN; } value = (left > right) - (left < right); #else if (left == right) value = 0; else if (left < right) value = -1; else if (left > right) value = 1; else { SETs(&PL_sv_undef); RETURN; } #endif SETi(value); RETURN; } } PP(pp_slt) { dSP; tryAMAGICbinSET(slt,0); { dPOPTOPssrl; int cmp = (IN_LOCALE_RUNTIME ? sv_cmp_locale(left, right) : sv_cmp(left, right)); SETs(boolSV(cmp < 0)); RETURN; } } PP(pp_sgt) { dSP; tryAMAGICbinSET(sgt,0); { dPOPTOPssrl; int cmp = (IN_LOCALE_RUNTIME ? sv_cmp_locale(left, right) : sv_cmp(left, right)); SETs(boolSV(cmp > 0)); RETURN; } } PP(pp_sle) { dSP; tryAMAGICbinSET(sle,0); { dPOPTOPssrl; int cmp = (IN_LOCALE_RUNTIME ? sv_cmp_locale(left, right) : sv_cmp(left, right)); SETs(boolSV(cmp <= 0)); RETURN; } } PP(pp_sge) { dSP; tryAMAGICbinSET(sge,0); { dPOPTOPssrl; int cmp = (IN_LOCALE_RUNTIME ? sv_cmp_locale(left, right) : sv_cmp(left, right)); SETs(boolSV(cmp >= 0)); RETURN; } } PP(pp_seq) { dSP; tryAMAGICbinSET(seq,0); { dPOPTOPssrl; SETs(boolSV(sv_eq(left, right))); RETURN; } } PP(pp_sne) { dSP; tryAMAGICbinSET(sne,0); { dPOPTOPssrl; SETs(boolSV(!sv_eq(left, right))); RETURN; } } PP(pp_scmp) { dSP; dTARGET; tryAMAGICbin(scmp,0); { dPOPTOPssrl; int cmp = (IN_LOCALE_RUNTIME ? sv_cmp_locale(left, right) : sv_cmp(left, right)); SETi( cmp ); RETURN; } } PP(pp_bit_and) { dSP; dATARGET; tryAMAGICbin(band,opASSIGN); { dPOPTOPssrl; if (SvNIOKp(left) || SvNIOKp(right)) { if (PL_op->op_private & HINT_INTEGER) { IV i = SvIV(left) & SvIV(right); SETi(i); } else { UV u = SvUV(left) & SvUV(right); SETu(u); } } else { do_vop(PL_op->op_type, TARG, left, right); SETTARG; } RETURN; } } PP(pp_bit_xor) { dSP; dATARGET; tryAMAGICbin(bxor,opASSIGN); { dPOPTOPssrl; if (SvNIOKp(left) || SvNIOKp(right)) { if (PL_op->op_private & HINT_INTEGER) { IV i = (USE_LEFT(left) ? SvIV(left) : 0) ^ SvIV(right); SETi(i); } else { UV u = (USE_LEFT(left) ? SvUV(left) : 0) ^ SvUV(right); SETu(u); } } else { do_vop(PL_op->op_type, TARG, left, right); SETTARG; } RETURN; } } PP(pp_bit_or) { dSP; dATARGET; tryAMAGICbin(bor,opASSIGN); { dPOPTOPssrl; if (SvNIOKp(left) || SvNIOKp(right)) { if (PL_op->op_private & HINT_INTEGER) { IV i = (USE_LEFT(left) ? SvIV(left) : 0) | SvIV(right); SETi(i); } else { UV u = (USE_LEFT(left) ? SvUV(left) : 0) | SvUV(right); SETu(u); } } else { do_vop(PL_op->op_type, TARG, left, right); SETTARG; } RETURN; } } PP(pp_negate) { dSP; dTARGET; tryAMAGICun(neg); { dTOPss; int flags = SvFLAGS(sv); if (SvGMAGICAL(sv)) mg_get(sv); if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { /* It's publicly an integer, or privately an integer-not-float */ oops_its_an_int: if (SvIsUV(sv)) { if (SvIVX(sv) == IV_MIN) { /* 2s complement assumption. */ SETi(SvIVX(sv)); /* special case: -((UV)IV_MAX+1) == IV_MIN */ RETURN; } else if (SvUVX(sv) <= IV_MAX) { SETi(-SvIVX(sv)); RETURN; } } else if (SvIVX(sv) != IV_MIN) { SETi(-SvIVX(sv)); RETURN; } #ifdef PERL_PRESERVE_IVUV else { SETu((UV)IV_MIN); RETURN; } #endif } if (SvNIOKp(sv)) SETn(-SvNV(sv)); else if (SvPOKp(sv)) { STRLEN len; char *s = SvPV(sv, len); if (isIDFIRST(*s)) { sv_setpvn(TARG, "-", 1); sv_catsv(TARG, sv); } else if (*s == '+' || *s == '-') { sv_setsv(TARG, sv); *SvPV_force(TARG, len) = *s == '-' ? '+' : '-'; } else if (DO_UTF8(sv) && UTF8_IS_START(*s) && isIDFIRST_utf8((U8*)s)) { sv_setpvn(TARG, "-", 1); sv_catsv(TARG, sv); } else { SvIV_please(sv); if (SvIOK(sv)) goto oops_its_an_int; sv_setnv(TARG, -SvNV(sv)); } SETTARG; } else SETn(-SvNV(sv)); } RETURN; } PP(pp_not) { dSP; tryAMAGICunSET(not); *PL_stack_sp = boolSV(!SvTRUE(*PL_stack_sp)); return NORMAL; } PP(pp_complement) { dSP; dTARGET; tryAMAGICun(compl); { dTOPss; if (SvNIOKp(sv)) { if (PL_op->op_private & HINT_INTEGER) { IV i = ~SvIV(sv); SETi(i); } else { UV u = ~SvUV(sv); SETu(u); } } else { register U8 *tmps; register I32 anum; STRLEN len; SvSetSV(TARG, sv); tmps = (U8*)SvPV_force(TARG, len); anum = len; if (SvUTF8(TARG)) { /* Calculate exact length, let's not estimate. */ STRLEN targlen = 0; U8 *result; U8 *send; STRLEN l; UV nchar = 0; UV nwide = 0; send = tmps + len; while (tmps < send) { UV c = utf8n_to_uvchr(tmps, send-tmps, &l, UTF8_ALLOW_ANYUV); tmps += UTF8SKIP(tmps); targlen += UNISKIP(~c); nchar++; if (c > 0xff) nwide++; } /* Now rewind strings and write them. */ tmps -= len; if (nwide) { Newz(0, result, targlen + 1, U8); while (tmps < send) { UV c = utf8n_to_uvchr(tmps, send-tmps, &l, UTF8_ALLOW_ANYUV); tmps += UTF8SKIP(tmps); result = uvchr_to_utf8(result, ~c); } *result = '\0'; result -= targlen; sv_setpvn(TARG, (char*)result, targlen); SvUTF8_on(TARG); } else { Newz(0, result, nchar + 1, U8); while (tmps < send) { U8 c = (U8)utf8n_to_uvchr(tmps, 0, &l, UTF8_ALLOW_ANY); tmps += UTF8SKIP(tmps); *result++ = ~c; } *result = '\0'; result -= nchar; sv_setpvn(TARG, (char*)result, nchar); } Safefree(result); SETs(TARG); RETURN; } #ifdef LIBERAL { register long *tmpl; for ( ; anum && (unsigned long)tmps % sizeof(long); anum--, tmps++) *tmps = ~*tmps; tmpl = (long*)tmps; for ( ; anum >= sizeof(long); anum -= sizeof(long), tmpl++) *tmpl = ~*tmpl; tmps = (U8*)tmpl; } #endif for ( ; anum > 0; anum--, tmps++) *tmps = ~*tmps; SETs(TARG); } RETURN; } } /* integer versions of some of the above */ PP(pp_i_multiply) { dSP; dATARGET; tryAMAGICbin(mult,opASSIGN); { dPOPTOPiirl; SETi( left * right ); RETURN; } } PP(pp_i_divide) { dSP; dATARGET; tryAMAGICbin(div,opASSIGN); { dPOPiv; if (value == 0) DIE(aTHX_ "Illegal division by zero"); value = POPi / value; PUSHi( value ); RETURN; } } PP(pp_i_modulo) { dSP; dATARGET; tryAMAGICbin(modulo,opASSIGN); { dPOPTOPiirl; if (!right) DIE(aTHX_ "Illegal modulus zero"); SETi( left % right ); RETURN; } } PP(pp_i_add) { dSP; dATARGET; tryAMAGICbin(add,opASSIGN); { dPOPTOPiirl_ul; SETi( left + right ); RETURN; } } PP(pp_i_subtract) { dSP; dATARGET; tryAMAGICbin(subtr,opASSIGN); { dPOPTOPiirl_ul; SETi( left - right ); RETURN; } } PP(pp_i_lt) { dSP; tryAMAGICbinSET(lt,0); { dPOPTOPiirl; SETs(boolSV(left < right)); RETURN; } } PP(pp_i_gt) { dSP; tryAMAGICbinSET(gt,0); { dPOPTOPiirl; SETs(boolSV(left > right)); RETURN; } } PP(pp_i_le) { dSP; tryAMAGICbinSET(le,0); { dPOPTOPiirl; SETs(boolSV(left <= right)); RETURN; } } PP(pp_i_ge) { dSP; tryAMAGICbinSET(ge,0); { dPOPTOPiirl; SETs(boolSV(left >= right)); RETURN; } } PP(pp_i_eq) { dSP; tryAMAGICbinSET(eq,0); { dPOPTOPiirl; SETs(boolSV(left == right)); RETURN; } } PP(pp_i_ne) { dSP; tryAMAGICbinSET(ne,0); { dPOPTOPiirl; SETs(boolSV(left != right)); RETURN; } } PP(pp_i_ncmp) { dSP; dTARGET; tryAMAGICbin(ncmp,0); { dPOPTOPiirl; I32 value; if (left > right) value = 1; else if (left < right) value = -1; else value = 0; SETi(value); RETURN; } } PP(pp_i_negate) { dSP; dTARGET; tryAMAGICun(neg); SETi(-TOPi); RETURN; } /* High falutin' math. */ PP(pp_atan2) { dSP; dTARGET; tryAMAGICbin(atan2,0); { dPOPTOPnnrl; SETn(Perl_atan2(left, right)); RETURN; } } PP(pp_sin) { dSP; dTARGET; tryAMAGICun(sin); { NV value; value = POPn; value = Perl_sin(value); XPUSHn(value); RETURN; } } PP(pp_cos) { dSP; dTARGET; tryAMAGICun(cos); { NV value; value = POPn; value = Perl_cos(value); XPUSHn(value); RETURN; } } /* Support Configure command-line overrides for rand() functions. After 5.005, perhaps we should replace this by Configure support for drand48(), random(), or rand(). For 5.005, though, maintain compatibility by calling rand() but allow the user to override it. See INSTALL for details. --Andy Dougherty 15 July 1998 */ /* Now it's after 5.005, and Configure supports drand48() and random(), in addition to rand(). So the overrides should not be needed any more. --Jarkko Hietaniemi 27 September 1998 */ #ifndef HAS_DRAND48_PROTO extern double drand48 (void); #endif PP(pp_rand) { dSP; dTARGET; NV value; if (MAXARG < 1) value = 1.0; else value = POPn; if (value == 0.0) value = 1.0; if (!PL_srand_called) { (void)seedDrand01((Rand_seed_t)seed()); PL_srand_called = TRUE; } value *= Drand01(); XPUSHn(value); RETURN; } PP(pp_srand) { dSP; UV anum; if (MAXARG < 1) anum = seed(); else anum = POPu; (void)seedDrand01((Rand_seed_t)anum); PL_srand_called = TRUE; EXTEND(SP, 1); RETPUSHYES; } STATIC U32 S_seed(pTHX) { /* * This is really just a quick hack which grabs various garbage * values. It really should be a real hash algorithm which * spreads the effect of every input bit onto every output bit, * if someone who knows about such things would bother to write it. * Might be a good idea to add that function to CORE as well. * No numbers below come from careful analysis or anything here, * except they are primes and SEED_C1 > 1E6 to get a full-width * value from (tv_sec * SEED_C1 + tv_usec). The multipliers should * probably be bigger too. */ #if RANDBITS > 16 # define SEED_C1 1000003 #define SEED_C4 73819 #else # define SEED_C1 25747 #define SEED_C4 20639 #endif #define SEED_C2 3 #define SEED_C3 269 #define SEED_C5 26107 #ifndef PERL_NO_DEV_RANDOM int fd; #endif U32 u; #ifdef VMS # include /* when[] = (low 32 bits, high 32 bits) of time since epoch * in 100-ns units, typically incremented ever 10 ms. */ unsigned int when[2]; #else # ifdef HAS_GETTIMEOFDAY struct timeval when; # else Time_t when; # endif #endif /* This test is an escape hatch, this symbol isn't set by Configure. */ #ifndef PERL_NO_DEV_RANDOM #ifndef PERL_RANDOM_DEVICE /* /dev/random isn't used by default because reads from it will block * if there isn't enough entropy available. You can compile with * PERL_RANDOM_DEVICE to it if you'd prefer Perl to block until there * is enough real entropy to fill the seed. */ # define PERL_RANDOM_DEVICE "/dev/urandom" #endif fd = PerlLIO_open(PERL_RANDOM_DEVICE, 0); if (fd != -1) { if (PerlLIO_read(fd, &u, sizeof u) != sizeof u) u = 0; PerlLIO_close(fd); if (u) return u; } #endif #ifdef VMS _ckvmssts(sys$gettim(when)); u = (U32)SEED_C1 * when[0] + (U32)SEED_C2 * when[1]; #else # ifdef HAS_GETTIMEOFDAY gettimeofday(&when,(struct timezone *) 0); u = (U32)SEED_C1 * when.tv_sec + (U32)SEED_C2 * when.tv_usec; # else (void)time(&when); u = (U32)SEED_C1 * when; # endif #endif u += SEED_C3 * (U32)PerlProc_getpid(); u += SEED_C4 * (U32)PTR2UV(PL_stack_sp); #ifndef PLAN9 /* XXX Plan9 assembler chokes on this; fix needed */ u += SEED_C5 * (U32)PTR2UV(&when); #endif return u; } PP(pp_exp) { dSP; dTARGET; tryAMAGICun(exp); { NV value; value = POPn; value = Perl_exp(value); XPUSHn(value); RETURN; } } PP(pp_log) { dSP; dTARGET; tryAMAGICun(log); { NV value; value = POPn; if (value <= 0.0) { SET_NUMERIC_STANDARD(); DIE(aTHX_ "Can't take log of %g", value); } value = Perl_log(value); XPUSHn(value); RETURN; } } PP(pp_sqrt) { dSP; dTARGET; tryAMAGICun(sqrt); { NV value; value = POPn; if (value < 0.0) { SET_NUMERIC_STANDARD(); DIE(aTHX_ "Can't take sqrt of %g", value); } value = Perl_sqrt(value); XPUSHn(value); RETURN; } } PP(pp_int) { dSP; dTARGET; tryAMAGICun(int); { NV value; IV iv = TOPi; /* attempt to convert to IV if possible. */ /* XXX it's arguable that compiler casting to IV might be subtly different from modf (for numbers inside (IV_MIN,UV_MAX)) in which else preferring IV has introduced a subtle behaviour change bug. OTOH relying on floating point to be accurate is a bug. */ if (SvIOK(TOPs)) { if (SvIsUV(TOPs)) { UV uv = TOPu; SETu(uv); } else SETi(iv); } else { value = TOPn; if (value >= 0.0) { if (value < (NV)UV_MAX + 0.5) { SETu(U_V(value)); } else { #if defined(HAS_MODFL) || defined(LONG_DOUBLE_EQUALS_DOUBLE) # ifdef HAS_MODFL_POW32_BUG /* some versions of glibc split (i + d) into (i-1, d+1) for 2^32 <= i < 2^64 */ { NV offset = Perl_modf(value, &value); (void)Perl_modf(offset, &offset); value += offset; } # else (void)Perl_modf(value, &value); # endif #else double tmp = (double)value; (void)Perl_modf(tmp, &tmp); value = (NV)tmp; #endif SETn(value); } } else { if (value > (NV)IV_MIN - 0.5) { SETi(I_V(value)); } else { #if defined(HAS_MODFL) || defined(LONG_DOUBLE_EQUALS_DOUBLE) # ifdef HAS_MODFL_POW32_BUG /* some versions of glibc split (i + d) into (i-1, d+1) for 2^32 <= i < 2^64 */ { NV offset = Perl_modf(-value, &value); (void)Perl_modf(offset, &offset); value += offset; } # else (void)Perl_modf(-value, &value); # endif value = -value; #else double tmp = (double)value; (void)Perl_modf(-tmp, &tmp); value = -(NV)tmp; #endif SETn(value); } } } } RETURN; } PP(pp_abs) { dSP; dTARGET; tryAMAGICun(abs); { /* This will cache the NV value if string isn't actually integer */ IV iv = TOPi; if (SvIOK(TOPs)) { /* IVX is precise */ if (SvIsUV(TOPs)) { SETu(TOPu); /* force it to be numeric only */ } else { if (iv >= 0) { SETi(iv); } else { if (iv != IV_MIN) { SETi(-iv); } else { /* 2s complement assumption. Also, not really needed as IV_MIN and -IV_MIN should both be %100...00 and NV-able */ SETu(IV_MIN); } } } } else{ NV value = TOPn; if (value < 0.0) value = -value; SETn(value); } } RETURN; } PP(pp_hex) { dSP; dTARGET; char *tmps; I32 flags = PERL_SCAN_ALLOW_UNDERSCORES; STRLEN len; NV result_nv; UV result_uv; tmps = (SvPVx(POPs, len)); result_uv = grok_hex (tmps, &len, &flags, &result_nv); if (flags & PERL_SCAN_GREATER_THAN_UV_MAX) { XPUSHn(result_nv); } else { XPUSHu(result_uv); } RETURN; } PP(pp_oct) { dSP; dTARGET; char *tmps; I32 flags = PERL_SCAN_ALLOW_UNDERSCORES; STRLEN len; NV result_nv; UV result_uv; tmps = (SvPVx(POPs, len)); while (*tmps && len && isSPACE(*tmps)) tmps++, len--; if (*tmps == '0') tmps++, len--; if (*tmps == 'x') result_uv = grok_hex (tmps, &len, &flags, &result_nv); else if (*tmps == 'b') result_uv = grok_bin (tmps, &len, &flags, &result_nv); else result_uv = grok_oct (tmps, &len, &flags, &result_nv); if (flags & PERL_SCAN_GREATER_THAN_UV_MAX) { XPUSHn(result_nv); } else { XPUSHu(result_uv); } RETURN; } /* String stuff. */ PP(pp_length) { dSP; dTARGET; SV *sv = TOPs; if (DO_UTF8(sv)) SETi(sv_len_utf8(sv)); else SETi(sv_len(sv)); RETURN; } PP(pp_substr) { dSP; dTARGET; SV *sv; I32 len = 0; STRLEN curlen; STRLEN utf8_curlen; I32 pos; I32 rem; I32 fail; I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET; char *tmps; I32 arybase = PL_curcop->cop_arybase; SV *repl_sv = NULL; char *repl = 0; STRLEN repl_len; int num_args = PL_op->op_private & 7; bool repl_need_utf8_upgrade = FALSE; bool repl_is_utf8 = FALSE; SvTAINTED_off(TARG); /* decontaminate */ SvUTF8_off(TARG); /* decontaminate */ if (num_args > 2) { if (num_args > 3) { repl_sv = POPs; repl = SvPV(repl_sv, repl_len); repl_is_utf8 = DO_UTF8(repl_sv) && SvCUR(repl_sv); } len = POPi; } pos = POPi; sv = POPs; PUTBACK; if (repl_sv) { if (repl_is_utf8) { if (!DO_UTF8(sv)) sv_utf8_upgrade(sv); } else if (DO_UTF8(sv)) repl_need_utf8_upgrade = TRUE; } tmps = SvPV(sv, curlen); if (DO_UTF8(sv)) { utf8_curlen = sv_len_utf8(sv); if (utf8_curlen == curlen) utf8_curlen = 0; else curlen = utf8_curlen; } else utf8_curlen = 0; if (pos >= arybase) { pos -= arybase; rem = curlen-pos; fail = rem; if (num_args > 2) { if (len < 0) { rem += len; if (rem < 0) rem = 0; } else if (rem > len) rem = len; } } else { pos += curlen; if (num_args < 3) rem = curlen; else if (len >= 0) { rem = pos+len; if (rem > (I32)curlen) rem = curlen; } else { rem = curlen+len; if (rem < pos) rem = pos; } if (pos < 0) pos = 0; fail = rem; rem -= pos; } if (fail < 0) { if (lvalue || repl) Perl_croak(aTHX_ "substr outside of string"); if (ckWARN(WARN_SUBSTR)) Perl_warner(aTHX_ WARN_SUBSTR, "substr outside of string"); RETPUSHUNDEF; } else { I32 upos = pos; I32 urem = rem; if (utf8_curlen) sv_pos_u2b(sv, &pos, &rem); tmps += pos; sv_setpvn(TARG, tmps, rem); #ifdef USE_LOCALE_COLLATE sv_unmagic(TARG, PERL_MAGIC_collxfrm); #endif if (utf8_curlen) SvUTF8_on(TARG); if (repl) { SV* repl_sv_copy = NULL; if (repl_need_utf8_upgrade) { repl_sv_copy = newSVsv(repl_sv); sv_utf8_upgrade(repl_sv_copy); repl = SvPV(repl_sv_copy, repl_len); repl_is_utf8 = DO_UTF8(repl_sv_copy) && SvCUR(sv); } sv_insert(sv, pos, rem, repl, repl_len); if (repl_is_utf8) SvUTF8_on(sv); if (repl_sv_copy) SvREFCNT_dec(repl_sv_copy); } else if (lvalue) { /* it's an lvalue! */ if (!SvGMAGICAL(sv)) { if (SvROK(sv)) { STRLEN n_a; SvPV_force(sv,n_a); if (ckWARN(WARN_SUBSTR)) Perl_warner(aTHX_ WARN_SUBSTR, "Attempt to use reference as lvalue in substr"); } if (SvOK(sv)) /* is it defined ? */ (void)SvPOK_only_UTF8(sv); else sv_setpvn(sv,"",0); /* avoid lexical reincarnation */ } if (SvTYPE(TARG) < SVt_PVLV) { sv_upgrade(TARG, SVt_PVLV); sv_magic(TARG, Nullsv, PERL_MAGIC_substr, Nullch, 0); } LvTYPE(TARG) = 'x'; if (LvTARG(TARG) != sv) { if (LvTARG(TARG)) SvREFCNT_dec(LvTARG(TARG)); LvTARG(TARG) = SvREFCNT_inc(sv); } LvTARGOFF(TARG) = upos; LvTARGLEN(TARG) = urem; } } SPAGAIN; PUSHs(TARG); /* avoid SvSETMAGIC here */ RETURN; } PP(pp_vec) { dSP; dTARGET; register IV size = POPi; register IV offset = POPi; register SV *src = POPs; I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET; SvTAINTED_off(TARG); /* decontaminate */ if (lvalue) { /* it's an lvalue! */ if (SvTYPE(TARG) < SVt_PVLV) { sv_upgrade(TARG, SVt_PVLV); sv_magic(TARG, Nullsv, PERL_MAGIC_vec, Nullch, 0); } LvTYPE(TARG) = 'v'; if (LvTARG(TARG) != src) { if (LvTARG(TARG)) SvREFCNT_dec(LvTARG(TARG)); LvTARG(TARG) = SvREFCNT_inc(src); } LvTARGOFF(TARG) = offset; LvTARGLEN(TARG) = size; } sv_setuv(TARG, do_vecget(src, offset, size)); PUSHs(TARG); RETURN; } PP(pp_index) { dSP; dTARGET; SV *big; SV *little; I32 offset; I32 retval; char *tmps; char *tmps2; STRLEN biglen; I32 arybase = PL_curcop->cop_arybase; if (MAXARG < 3) offset = 0; else offset = POPi - arybase; little = POPs; big = POPs; tmps = SvPV(big, biglen); if (offset > 0 && DO_UTF8(big)) sv_pos_u2b(big, &offset, 0); if (offset < 0) offset = 0; else if (offset > biglen) offset = biglen; if (!(tmps2 = fbm_instr((unsigned char*)tmps + offset, (unsigned char*)tmps + biglen, little, 0))) retval = -1; else retval = tmps2 - tmps; if (retval > 0 && DO_UTF8(big)) sv_pos_b2u(big, &retval); PUSHi(retval + arybase); RETURN; } PP(pp_rindex) { dSP; dTARGET; SV *big; SV *little; STRLEN blen; STRLEN llen; I32 offset; I32 retval; char *tmps; char *tmps2; I32 arybase = PL_curcop->cop_arybase; if (MAXARG >= 3) offset = POPi; little = POPs; big = POPs; tmps2 = SvPV(little, llen); tmps = SvPV(big, blen); if (MAXARG < 3) offset = blen; else { if (offset > 0 && DO_UTF8(big)) sv_pos_u2b(big, &offset, 0); offset = offset - arybase + llen; } if (offset < 0) offset = 0; else if (offset > blen) offset = blen; if (!(tmps2 = rninstr(tmps, tmps + offset, tmps2, tmps2 + llen))) retval = -1; else retval = tmps2 - tmps; if (retval > 0 && DO_UTF8(big)) sv_pos_b2u(big, &retval); PUSHi(retval + arybase); RETURN; } PP(pp_sprintf) { dSP; dMARK; dORIGMARK; dTARGET; do_sprintf(TARG, SP-MARK, MARK+1); TAINT_IF(SvTAINTED(TARG)); if (DO_UTF8(*(MARK+1))) SvUTF8_on(TARG); SP = ORIGMARK; PUSHTARG; RETURN; } PP(pp_ord) { dSP; dTARGET; SV *argsv = POPs; STRLEN len; U8 *s = (U8*)SvPVx(argsv, len); XPUSHu(DO_UTF8(argsv) ? utf8_to_uvchr(s, 0) : (*s & 0xff)); RETURN; } PP(pp_chr) { dSP; dTARGET; char *tmps; UV value = POPu; (void)SvUPGRADE(TARG,SVt_PV); if (value > 255 && !IN_BYTES) { SvGROW(TARG, UNISKIP(value)+1); tmps = (char*)uvchr_to_utf8((U8*)SvPVX(TARG), value); SvCUR_set(TARG, tmps - SvPVX(TARG)); *tmps = '\0'; (void)SvPOK_only(TARG); SvUTF8_on(TARG); XPUSHs(TARG); RETURN; } SvGROW(TARG,2); SvCUR_set(TARG, 1); tmps = SvPVX(TARG); *tmps++ = value; *tmps = '\0'; (void)SvPOK_only(TARG); XPUSHs(TARG); RETURN; } PP(pp_crypt) { dSP; dTARGET; dPOPTOPssrl; STRLEN n_a; #ifdef HAS_CRYPT STRLEN len; char *tmps = SvPV(left, len); char *t = 0; if (DO_UTF8(left)) { /* If Unicode take the crypt() of the low 8 bits * of the characters of the string. */ char *s = tmps; char *send = tmps + len; STRLEN i = 0; Newz(688, t, len, char); while (s < send) { t[i++] = utf8_to_uvchr((U8*)s, 0) & 0xFF; s += UTF8SKIP(s); } tmps = t; } #ifdef FCRYPT sv_setpv(TARG, fcrypt(tmps, SvPV(right, n_a))); #else sv_setpv(TARG, PerlProc_crypt(tmps, SvPV(right, n_a))); #endif Safefree(t); #else DIE(aTHX_ "The crypt() function is unimplemented due to excessive paranoia."); #endif SETs(TARG); RETURN; } PP(pp_ucfirst) { dSP; SV *sv = TOPs; register U8 *s; STRLEN slen; if (DO_UTF8(sv) && (s = (U8*)SvPV(sv, slen)) && slen && UTF8_IS_START(*s)) { STRLEN ulen; U8 tmpbuf[UTF8_MAXLEN*2+1]; U8 *tend; UV uv; toTITLE_utf8(s, tmpbuf, &ulen); /* XXX --jhi */ uv = utf8_to_uvchr(tmpbuf, 0); tend = uvchr_to_utf8(tmpbuf, uv); if (!SvPADTMP(sv) || tend - tmpbuf != ulen || SvREADONLY(sv)) { dTARGET; sv_setpvn(TARG, (char*)tmpbuf, tend - tmpbuf); sv_catpvn(TARG, (char*)(s + ulen), slen - ulen); SvUTF8_on(TARG); SETs(TARG); } else { s = (U8*)SvPV_force(sv, slen); Copy(tmpbuf, s, ulen, U8); } } else { if (!SvPADTMP(sv) || SvREADONLY(sv)) { dTARGET; SvUTF8_off(TARG); /* decontaminate */ sv_setsv(TARG, sv); sv = TARG; SETs(sv); } s = (U8*)SvPV_force(sv, slen); if (*s) { if (IN_LOCALE_RUNTIME) { TAINT; SvTAINTED_on(sv); *s = toUPPER_LC(*s); } else *s = toUPPER(*s); } } if (SvSMAGICAL(sv)) mg_set(sv); RETURN; } PP(pp_lcfirst) { dSP; SV *sv = TOPs; register U8 *s; STRLEN slen; if (DO_UTF8(sv) && (s = (U8*)SvPV(sv, slen)) && slen && UTF8_IS_START(*s)) { STRLEN ulen; U8 tmpbuf[UTF8_MAXLEN*2+1]; U8 *tend; UV uv; toLOWER_utf8(s, tmpbuf, &ulen); /* XXX --jhi */ uv = utf8_to_uvchr(tmpbuf, 0); tend = uvchr_to_utf8(tmpbuf, uv); if (!SvPADTMP(sv) || tend - tmpbuf != ulen || SvREADONLY(sv)) { dTARGET; sv_setpvn(TARG, (char*)tmpbuf, tend - tmpbuf); sv_catpvn(TARG, (char*)(s + ulen), slen - ulen); SvUTF8_on(TARG); SETs(TARG); } else { s = (U8*)SvPV_force(sv, slen); Copy(tmpbuf, s, ulen, U8); } } else { if (!SvPADTMP(sv) || SvREADONLY(sv)) { dTARGET; SvUTF8_off(TARG); /* decontaminate */ sv_setsv(TARG, sv); sv = TARG; SETs(sv); } s = (U8*)SvPV_force(sv, slen); if (*s) { if (IN_LOCALE_RUNTIME) { TAINT; SvTAINTED_on(sv); *s = toLOWER_LC(*s); } else *s = toLOWER(*s); } } if (SvSMAGICAL(sv)) mg_set(sv); RETURN; } PP(pp_uc) { dSP; SV *sv = TOPs; register U8 *s; STRLEN len; if (DO_UTF8(sv)) { dTARGET; STRLEN ulen; register U8 *d; U8 *send; U8 tmpbuf[UTF8_MAXLEN*2+1]; s = (U8*)SvPV(sv,len); if (!len) { SvUTF8_off(TARG); /* decontaminate */ sv_setpvn(TARG, "", 0); SETs(TARG); } else { (void)SvUPGRADE(TARG, SVt_PV); SvGROW(TARG, (len * 2) + 1); (void)SvPOK_only(TARG); d = (U8*)SvPVX(TARG); send = s + len; while (s < send) { toUPPER_utf8(s, tmpbuf, &ulen); /* XXX --jhi */ Copy(tmpbuf, d, ulen, U8); d += ulen; s += UTF8SKIP(s); } *d = '\0'; SvUTF8_on(TARG); SvCUR_set(TARG, d - (U8*)SvPVX(TARG)); SETs(TARG); } } else { if (!SvPADTMP(sv) || SvREADONLY(sv)) { dTARGET; SvUTF8_off(TARG); /* decontaminate */ sv_setsv(TARG, sv); sv = TARG; SETs(sv); } s = (U8*)SvPV_force(sv, len); if (len) { register U8 *send = s + len; if (IN_LOCALE_RUNTIME) { TAINT; SvTAINTED_on(sv); for (; s < send; s++) *s = toUPPER_LC(*s); } else { for (; s < send; s++) *s = toUPPER(*s); } } } if (SvSMAGICAL(sv)) mg_set(sv); RETURN; } PP(pp_lc) { dSP; SV *sv = TOPs; register U8 *s; STRLEN len; if (DO_UTF8(sv)) { dTARGET; STRLEN ulen; register U8 *d; U8 *send; U8 tmpbuf[UTF8_MAXLEN*2+1]; s = (U8*)SvPV(sv,len); if (!len) { SvUTF8_off(TARG); /* decontaminate */ sv_setpvn(TARG, "", 0); SETs(TARG); } else { (void)SvUPGRADE(TARG, SVt_PV); SvGROW(TARG, (len * 2) + 1); (void)SvPOK_only(TARG); d = (U8*)SvPVX(TARG); send = s + len; while (s < send) { toLOWER_utf8(s, tmpbuf, &ulen); /* XXX --jhi */ Copy(tmpbuf, d, ulen, U8); d += ulen; s += UTF8SKIP(s); } *d = '\0'; SvUTF8_on(TARG); SvCUR_set(TARG, d - (U8*)SvPVX(TARG)); SETs(TARG); } } else { if (!SvPADTMP(sv) || SvREADONLY(sv)) { dTARGET; SvUTF8_off(TARG); /* decontaminate */ sv_setsv(TARG, sv); sv = TARG; SETs(sv); } s = (U8*)SvPV_force(sv, len); if (len) { register U8 *send = s + len; if (IN_LOCALE_RUNTIME) { TAINT; SvTAINTED_on(sv); for (; s < send; s++) *s = toLOWER_LC(*s); } else { for (; s < send; s++) *s = toLOWER(*s); } } } if (SvSMAGICAL(sv)) mg_set(sv); RETURN; } PP(pp_quotemeta) { dSP; dTARGET; SV *sv = TOPs; STRLEN len; register char *s = SvPV(sv,len); register char *d; SvUTF8_off(TARG); /* decontaminate */ if (len) { (void)SvUPGRADE(TARG, SVt_PV); SvGROW(TARG, (len * 2) + 1); d = SvPVX(TARG); if (DO_UTF8(sv)) { while (len) { if (UTF8_IS_CONTINUED(*s)) { STRLEN ulen = UTF8SKIP(s); if (ulen > len) ulen = len; len -= ulen; while (ulen--) *d++ = *s++; } else { if (!isALNUM(*s)) *d++ = '\\'; *d++ = *s++; len--; } } SvUTF8_on(TARG); } else { while (len--) { if (!isALNUM(*s)) *d++ = '\\'; *d++ = *s++; } } *d = '\0'; SvCUR_set(TARG, d - SvPVX(TARG)); (void)SvPOK_only_UTF8(TARG); } else sv_setpvn(TARG, s, len); SETs(TARG); if (SvSMAGICAL(TARG)) mg_set(TARG); RETURN; } /* Arrays. */ PP(pp_aslice) { dSP; dMARK; dORIGMARK; register SV** svp; register AV* av = (AV*)POPs; register I32 lval = (PL_op->op_flags & OPf_MOD || LVRET); I32 arybase = PL_curcop->cop_arybase; I32 elem; if (SvTYPE(av) == SVt_PVAV) { if (lval && PL_op->op_private & OPpLVAL_INTRO) { I32 max = -1; for (svp = MARK + 1; svp <= SP; svp++) { elem = SvIVx(*svp); if (elem > max) max = elem; } if (max > AvMAX(av)) av_extend(av, max); } while (++MARK <= SP) { elem = SvIVx(*MARK); if (elem > 0) elem -= arybase; svp = av_fetch(av, elem, lval); if (lval) { if (!svp || *svp == &PL_sv_undef) DIE(aTHX_ PL_no_aelem, elem); if (PL_op->op_private & OPpLVAL_INTRO) save_aelem(av, elem, svp); } *MARK = svp ? *svp : &PL_sv_undef; } } if (GIMME != G_ARRAY) { MARK = ORIGMARK; *++MARK = *SP; SP = MARK; } RETURN; } /* Associative arrays. */ PP(pp_each) { dSP; HV *hash = (HV*)POPs; HE *entry; I32 gimme = GIMME_V; I32 realhv = (SvTYPE(hash) == SVt_PVHV); PUTBACK; /* might clobber stack_sp */ entry = realhv ? hv_iternext(hash) : avhv_iternext((AV*)hash); SPAGAIN; EXTEND(SP, 2); if (entry) { PUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */ if (gimme == G_ARRAY) { SV *val; PUTBACK; /* might clobber stack_sp */ val = realhv ? hv_iterval(hash, entry) : avhv_iterval((AV*)hash, entry); SPAGAIN; PUSHs(val); } } else if (gimme == G_SCALAR) RETPUSHUNDEF; RETURN; } PP(pp_values) { return do_kv(); } PP(pp_keys) { return do_kv(); } PP(pp_delete) { dSP; I32 gimme = GIMME_V; I32 discard = (gimme == G_VOID) ? G_DISCARD : 0; SV *sv; HV *hv; if (PL_op->op_private & OPpSLICE) { dMARK; dORIGMARK; U32 hvtype; hv = (HV*)POPs; hvtype = SvTYPE(hv); if (hvtype == SVt_PVHV) { /* hash element */ while (++MARK <= SP) { sv = hv_delete_ent(hv, *MARK, discard, 0); *MARK = sv ? sv : &PL_sv_undef; } } else if (hvtype == SVt_PVAV) { if (PL_op->op_flags & OPf_SPECIAL) { /* array element */ while (++MARK <= SP) { sv = av_delete((AV*)hv, SvIV(*MARK), discard); *MARK = sv ? sv : &PL_sv_undef; } } else { /* pseudo-hash element */ while (++MARK <= SP) { sv = avhv_delete_ent((AV*)hv, *MARK, discard, 0); *MARK = sv ? sv : &PL_sv_undef; } } } else DIE(aTHX_ "Not a HASH reference"); if (discard) SP = ORIGMARK; else if (gimme == G_SCALAR) { MARK = ORIGMARK; *++MARK = *SP; SP = MARK; } } else { SV *keysv = POPs; hv = (HV*)POPs; if (SvTYPE(hv) == SVt_PVHV) sv = hv_delete_ent(hv, keysv, discard, 0); else if (SvTYPE(hv) == SVt_PVAV) { if (PL_op->op_flags & OPf_SPECIAL) sv = av_delete((AV*)hv, SvIV(keysv), discard); else sv = avhv_delete_ent((AV*)hv, keysv, discard, 0); } else DIE(aTHX_ "Not a HASH reference"); if (!sv) sv = &PL_sv_undef; if (!discard) PUSHs(sv); } RETURN; } PP(pp_exists) { dSP; SV *tmpsv; HV *hv; if (PL_op->op_private & OPpEXISTS_SUB) { GV *gv; CV *cv; SV *sv = POPs; cv = sv_2cv(sv, &hv, &gv, FALSE); if (cv) RETPUSHYES; if (gv && isGV(gv) && GvCV(gv) && !GvCVGEN(gv)) RETPUSHYES; RETPUSHNO; } tmpsv = POPs; hv = (HV*)POPs; if (SvTYPE(hv) == SVt_PVHV) { if (hv_exists_ent(hv, tmpsv, 0)) RETPUSHYES; } else if (SvTYPE(hv) == SVt_PVAV) { if (PL_op->op_flags & OPf_SPECIAL) { /* array element */ if (av_exists((AV*)hv, SvIV(tmpsv))) RETPUSHYES; } else if (avhv_exists_ent((AV*)hv, tmpsv, 0)) /* pseudo-hash element */ RETPUSHYES; } else { DIE(aTHX_ "Not a HASH reference"); } RETPUSHNO; } PP(pp_hslice) { dSP; dMARK; dORIGMARK; register HV *hv = (HV*)POPs; register I32 lval = (PL_op->op_flags & OPf_MOD || LVRET); I32 realhv = (SvTYPE(hv) == SVt_PVHV); if (!realhv && PL_op->op_private & OPpLVAL_INTRO) DIE(aTHX_ "Can't localize pseudo-hash element"); if (realhv || SvTYPE(hv) == SVt_PVAV) { while (++MARK <= SP) { SV *keysv = *MARK; SV **svp; I32 preeminent = SvRMAGICAL(hv) ? 1 : realhv ? hv_exists_ent(hv, keysv, 0) : avhv_exists_ent((AV*)hv, keysv, 0); if (realhv) { HE *he = hv_fetch_ent(hv, keysv, lval, 0); svp = he ? &HeVAL(he) : 0; } else { svp = avhv_fetch_ent((AV*)hv, keysv, lval, 0); } if (lval) { if (!svp || *svp == &PL_sv_undef) { STRLEN n_a; DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); } if (PL_op->op_private & OPpLVAL_INTRO) { if (preeminent) save_helem(hv, keysv, svp); else { STRLEN keylen; char *key = SvPV(keysv, keylen); SAVEDELETE(hv, savepvn(key,keylen), keylen); } } } *MARK = svp ? *svp : &PL_sv_undef; } } if (GIMME != G_ARRAY) { MARK = ORIGMARK; *++MARK = *SP; SP = MARK; } RETURN; } /* List operators. */ PP(pp_list) { dSP; dMARK; if (GIMME != G_ARRAY) { if (++MARK <= SP) *MARK = *SP; /* unwanted list, return last item */ else *MARK = &PL_sv_undef; SP = MARK; } RETURN; } PP(pp_lslice) { dSP; SV **lastrelem = PL_stack_sp; SV **lastlelem = PL_stack_base + POPMARK; SV **firstlelem = PL_stack_base + POPMARK + 1; register SV **firstrelem = lastlelem + 1; I32 arybase = PL_curcop->cop_arybase; I32 lval = PL_op->op_flags & OPf_MOD; I32 is_something_there = lval; register I32 max = lastrelem - lastlelem; register SV **lelem; register I32 ix; if (GIMME != G_ARRAY) { ix = SvIVx(*lastlelem); if (ix < 0) ix += max; else ix -= arybase; if (ix < 0 || ix >= max) *firstlelem = &PL_sv_undef; else *firstlelem = firstrelem[ix]; SP = firstlelem; RETURN; } if (max == 0) { SP = firstlelem - 1; RETURN; } for (lelem = firstlelem; lelem <= lastlelem; lelem++) { ix = SvIVx(*lelem); if (ix < 0) ix += max; else ix -= arybase; if (ix < 0 || ix >= max) *lelem = &PL_sv_undef; else { is_something_there = TRUE; if (!(*lelem = firstrelem[ix])) *lelem = &PL_sv_undef; } } if (is_something_there) SP = lastlelem; else SP = firstlelem - 1; RETURN; } PP(pp_anonlist) { dSP; dMARK; dORIGMARK; I32 items = SP - MARK; SV *av = sv_2mortal((SV*)av_make(items, MARK+1)); SP = ORIGMARK; /* av_make() might realloc stack_sp */ XPUSHs(av); RETURN; } PP(pp_anonhash) { dSP; dMARK; dORIGMARK; HV* hv = (HV*)sv_2mortal((SV*)newHV()); while (MARK < SP) { SV* key = *++MARK; SV *val = NEWSV(46, 0); if (MARK < SP) sv_setsv(val, *++MARK); else if (ckWARN(WARN_MISC)) Perl_warner(aTHX_ WARN_MISC, "Odd number of elements in hash assignment"); (void)hv_store_ent(hv,key,val,0); } SP = ORIGMARK; XPUSHs((SV*)hv); RETURN; } PP(pp_splice) { dSP; dMARK; dORIGMARK; register AV *ary = (AV*)*++MARK; register SV **src; register SV **dst; register I32 i; register I32 offset; register I32 length; I32 newlen; I32 after; I32 diff; SV **tmparyval = 0; MAGIC *mg; if ((mg = SvTIED_mg((SV*)ary, PERL_MAGIC_tied))) { *MARK-- = SvTIED_obj((SV*)ary, mg); PUSHMARK(MARK); PUTBACK; ENTER; call_method("SPLICE",GIMME_V); LEAVE; SPAGAIN; RETURN; } SP++; if (++MARK < SP) { offset = i = SvIVx(*MARK); if (offset < 0) offset += AvFILLp(ary) + 1; else offset -= PL_curcop->cop_arybase; if (offset < 0) DIE(aTHX_ PL_no_aelem, i); if (++MARK < SP) { length = SvIVx(*MARK++); if (length < 0) { length += AvFILLp(ary) - offset + 1; if (length < 0) length = 0; } } else length = AvMAX(ary) + 1; /* close enough to infinity */ } else { offset = 0; length = AvMAX(ary) + 1; } if (offset > AvFILLp(ary) + 1) offset = AvFILLp(ary) + 1; after = AvFILLp(ary) + 1 - (offset + length); if (after < 0) { /* not that much array */ length += after; /* offset+length now in array */ after = 0; if (!AvALLOC(ary)) av_extend(ary, 0); } /* At this point, MARK .. SP-1 is our new LIST */ newlen = SP - MARK; diff = newlen - length; if (newlen && !AvREAL(ary) && AvREIFY(ary)) av_reify(ary); if (diff < 0) { /* shrinking the area */ if (newlen) { New(451, tmparyval, newlen, SV*); /* so remember insertion */ Copy(MARK, tmparyval, newlen, SV*); } MARK = ORIGMARK + 1; if (GIMME == G_ARRAY) { /* copy return vals to stack */ MEXTEND(MARK, length); Copy(AvARRAY(ary)+offset, MARK, length, SV*); if (AvREAL(ary)) { EXTEND_MORTAL(length); for (i = length, dst = MARK; i; i--) { sv_2mortal(*dst); /* free them eventualy */ dst++; } } MARK += length - 1; } else { *MARK = AvARRAY(ary)[offset+length-1]; if (AvREAL(ary)) { sv_2mortal(*MARK); for (i = length - 1, dst = &AvARRAY(ary)[offset]; i > 0; i--) SvREFCNT_dec(*dst++); /* free them now */ } } AvFILLp(ary) += diff; /* pull up or down? */ if (offset < after) { /* easier to pull up */ if (offset) { /* esp. if nothing to pull */ src = &AvARRAY(ary)[offset-1]; dst = src - diff; /* diff is negative */ for (i = offset; i > 0; i--) /* can't trust Copy */ *dst-- = *src--; } dst = AvARRAY(ary); SvPVX(ary) = (char*)(AvARRAY(ary) - diff); /* diff is negative */ AvMAX(ary) += diff; } else { if (after) { /* anything to pull down? */ src = AvARRAY(ary) + offset + length; dst = src + diff; /* diff is negative */ Move(src, dst, after, SV*); } dst = &AvARRAY(ary)[AvFILLp(ary)+1]; /* avoid later double free */ } i = -diff; while (i) dst[--i] = &PL_sv_undef; if (newlen) { for (src = tmparyval, dst = AvARRAY(ary) + offset; newlen; newlen--) { *dst = NEWSV(46, 0); sv_setsv(*dst++, *src++); } Safefree(tmparyval); } } else { /* no, expanding (or same) */ if (length) { New(452, tmparyval, length, SV*); /* so remember deletion */ Copy(AvARRAY(ary)+offset, tmparyval, length, SV*); } if (diff > 0) { /* expanding */ /* push up or down? */ if (offset < after && diff <= AvARRAY(ary) - AvALLOC(ary)) { if (offset) { src = AvARRAY(ary); dst = src - diff; Move(src, dst, offset, SV*); } SvPVX(ary) = (char*)(AvARRAY(ary) - diff);/* diff is positive */ AvMAX(ary) += diff; AvFILLp(ary) += diff; } else { if (AvFILLp(ary) + diff >= AvMAX(ary)) /* oh, well */ av_extend(ary, AvFILLp(ary) + diff); AvFILLp(ary) += diff; if (after) { dst = AvARRAY(ary) + AvFILLp(ary); src = dst - diff; for (i = after; i; i--) { *dst-- = *src--; } } } } for (src = MARK, dst = AvARRAY(ary) + offset; newlen; newlen--) { *dst = NEWSV(46, 0); sv_setsv(*dst++, *src++); } MARK = ORIGMARK + 1; if (GIMME == G_ARRAY) { /* copy return vals to stack */ if (length) { Copy(tmparyval, MARK, length, SV*); if (AvREAL(ary)) { EXTEND_MORTAL(length); for (i = length, dst = MARK; i; i--) { sv_2mortal(*dst); /* free them eventualy */ dst++; } } Safefree(tmparyval); } MARK += length - 1; } else if (length--) { *MARK = tmparyval[length]; if (AvREAL(ary)) { sv_2mortal(*MARK); while (length-- > 0) SvREFCNT_dec(tmparyval[length]); } Safefree(tmparyval); } else *MARK = &PL_sv_undef; } SP = MARK; RETURN; } PP(pp_push) { dSP; dMARK; dORIGMARK; dTARGET; register AV *ary = (AV*)*++MARK; register SV *sv = &PL_sv_undef; MAGIC *mg; if ((mg = SvTIED_mg((SV*)ary, PERL_MAGIC_tied))) { *MARK-- = SvTIED_obj((SV*)ary, mg); PUSHMARK(MARK); PUTBACK; ENTER; call_method("PUSH",G_SCALAR|G_DISCARD); LEAVE; SPAGAIN; } else { /* Why no pre-extend of ary here ? */ for (++MARK; MARK <= SP; MARK++) { sv = NEWSV(51, 0); if (*MARK) sv_setsv(sv, *MARK); av_push(ary, sv); } } SP = ORIGMARK; PUSHi( AvFILL(ary) + 1 ); RETURN; } PP(pp_pop) { dSP; AV *av = (AV*)POPs; SV *sv = av_pop(av); if (AvREAL(av)) (void)sv_2mortal(sv); PUSHs(sv); RETURN; } PP(pp_shift) { dSP; AV *av = (AV*)POPs; SV *sv = av_shift(av); EXTEND(SP, 1); if (!sv) RETPUSHUNDEF; if (AvREAL(av)) (void)sv_2mortal(sv); PUSHs(sv); RETURN; } PP(pp_unshift) { dSP; dMARK; dORIGMARK; dTARGET; register AV *ary = (AV*)*++MARK; register SV *sv; register I32 i = 0; MAGIC *mg; if ((mg = SvTIED_mg((SV*)ary, PERL_MAGIC_tied))) { *MARK-- = SvTIED_obj((SV*)ary, mg); PUSHMARK(MARK); PUTBACK; ENTER; call_method("UNSHIFT",G_SCALAR|G_DISCARD); LEAVE; SPAGAIN; } else { av_unshift(ary, SP - MARK); while (MARK < SP) { sv = NEWSV(27, 0); sv_setsv(sv, *++MARK); (void)av_store(ary, i++, sv); } } SP = ORIGMARK; PUSHi( AvFILL(ary) + 1 ); RETURN; } PP(pp_reverse) { dSP; dMARK; register SV *tmp; SV **oldsp = SP; if (GIMME == G_ARRAY) { MARK++; while (MARK < SP) { tmp = *MARK; *MARK++ = *SP; *SP-- = tmp; } /* safe as long as stack cannot get extended in the above */ SP = oldsp; } else { register char *up; register char *down; register I32 tmp; dTARGET; STRLEN len; SvUTF8_off(TARG); /* decontaminate */ if (SP - MARK > 1) do_join(TARG, &PL_sv_no, MARK, SP); else sv_setsv(TARG, (SP > MARK) ? *SP : DEFSV); up = SvPV_force(TARG, len); if (len > 1) { if (DO_UTF8(TARG)) { /* first reverse each character */ U8* s = (U8*)SvPVX(TARG); U8* send = (U8*)(s + len); while (s < send) { if (UTF8_IS_INVARIANT(*s)) { s++; continue; } else { if (!utf8_to_uvchr(s, 0)) break; up = (char*)s; s += UTF8SKIP(s); down = (char*)(s - 1); /* reverse this character */ while (down > up) { tmp = *up; *up++ = *down; *down-- = tmp; } } } up = SvPVX(TARG); } down = SvPVX(TARG) + len - 1; while (down > up) { tmp = *up; *up++ = *down; *down-- = tmp; } (void)SvPOK_only_UTF8(TARG); } SP = MARK + 1; SETTARG; } RETURN; } PP(pp_split) { dSP; dTARG; AV *ary; register IV limit = POPi; /* note, negative is forever */ SV *sv = POPs; STRLEN len; register char *s = SvPV(sv, len); bool do_utf8 = DO_UTF8(sv); char *strend = s + len; register PMOP *pm; register REGEXP *rx; register SV *dstr; register char *m; I32 iters = 0; STRLEN slen = do_utf8 ? utf8_length((U8*)s, (U8*)strend) : (strend - s); I32 maxiters = slen + 10; I32 i; char *orig; I32 origlimit = limit; I32 realarray = 0; I32 base; AV *oldstack = PL_curstack; I32 gimme = GIMME_V; I32 oldsave = PL_savestack_ix; I32 make_mortal = 1; MAGIC *mg = (MAGIC *) NULL; #ifdef DEBUGGING Copy(&LvTARGOFF(POPs), &pm, 1, PMOP*); #else pm = (PMOP*)POPs; #endif if (!pm || !s) DIE(aTHX_ "panic: pp_split"); rx = PM_GETRE(pm); TAINT_IF((pm->op_pmflags & PMf_LOCALE) && (pm->op_pmflags & (PMf_WHITE | PMf_SKIPWHITE))); PL_reg_match_utf8 = do_utf8; if (pm->op_pmreplroot) { #ifdef USE_ITHREADS ary = GvAVn((GV*)PL_curpad[INT2PTR(PADOFFSET, pm->op_pmreplroot)]); #else ary = GvAVn((GV*)pm->op_pmreplroot); #endif } else if (gimme != G_ARRAY) #ifdef USE_5005THREADS ary = (AV*)PL_curpad[0]; #else ary = GvAVn(PL_defgv); #endif /* USE_5005THREADS */ else ary = Nullav; if (ary && (gimme != G_ARRAY || (pm->op_pmflags & PMf_ONCE))) { realarray = 1; PUTBACK; av_extend(ary,0); av_clear(ary); SPAGAIN; if ((mg = SvTIED_mg((SV*)ary, PERL_MAGIC_tied))) { PUSHMARK(SP); XPUSHs(SvTIED_obj((SV*)ary, mg)); } else { if (!AvREAL(ary)) { AvREAL_on(ary); AvREIFY_off(ary); for (i = AvFILLp(ary); i >= 0; i--) AvARRAY(ary)[i] = &PL_sv_undef; /* don't free mere refs */ } /* temporarily switch stacks */ SWITCHSTACK(PL_curstack, ary); make_mortal = 0; } } base = SP - PL_stack_base; orig = s; if (pm->op_pmflags & PMf_SKIPWHITE) { if (pm->op_pmflags & PMf_LOCALE) { while (isSPACE_LC(*s)) s++; } else { while (isSPACE(*s)) s++; } } if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { SAVEINT(PL_multiline); PL_multiline = pm->op_pmflags & PMf_MULTILINE; } if (!limit) limit = maxiters + 2; if (pm->op_pmflags & PMf_WHITE) { while (--limit) { m = s; while (m < strend && !((pm->op_pmflags & PMf_LOCALE) ? isSPACE_LC(*m) : isSPACE(*m))) ++m; if (m >= strend) break; dstr = NEWSV(30, m-s); sv_setpvn(dstr, s, m-s); if (make_mortal) sv_2mortal(dstr); if (do_utf8) (void)SvUTF8_on(dstr); XPUSHs(dstr); s = m + 1; while (s < strend && ((pm->op_pmflags & PMf_LOCALE) ? isSPACE_LC(*s) : isSPACE(*s))) ++s; } } else if (strEQ("^", rx->precomp)) { while (--limit) { /*SUPPRESS 530*/ for (m = s; m < strend && *m != '\n'; m++) ; m++; if (m >= strend) break; dstr = NEWSV(30, m-s); sv_setpvn(dstr, s, m-s); if (make_mortal) sv_2mortal(dstr); if (do_utf8) (void)SvUTF8_on(dstr); XPUSHs(dstr); s = m; } } else if (do_utf8 == ((rx->reganch & ROPT_UTF8) != 0) && (rx->reganch & RE_USE_INTUIT) && !rx->nparens && (rx->reganch & ROPT_CHECK_ALL) && !(rx->reganch & ROPT_ANCH)) { int tail = (rx->reganch & RE_INTUIT_TAIL); SV *csv = CALLREG_INTUIT_STRING(aTHX_ rx); len = rx->minlen; if (len == 1 && !(rx->reganch & ROPT_UTF8) && !tail) { STRLEN n_a; char c = *SvPV(csv, n_a); while (--limit) { /*SUPPRESS 530*/ for (m = s; m < strend && *m != c; m++) ; if (m >= strend) break; dstr = NEWSV(30, m-s); sv_setpvn(dstr, s, m-s); if (make_mortal) sv_2mortal(dstr); if (do_utf8) (void)SvUTF8_on(dstr); XPUSHs(dstr); /* The rx->minlen is in characters but we want to step * s ahead by bytes. */ if (do_utf8) s = (char*)utf8_hop((U8*)m, len); else s = m + len; /* Fake \n at the end */ } } else { #ifndef lint while (s < strend && --limit && (m = fbm_instr((unsigned char*)s, (unsigned char*)strend, csv, PL_multiline ? FBMrf_MULTILINE : 0)) ) #endif { dstr = NEWSV(31, m-s); sv_setpvn(dstr, s, m-s); if (make_mortal) sv_2mortal(dstr); if (do_utf8) (void)SvUTF8_on(dstr); XPUSHs(dstr); /* The rx->minlen is in characters but we want to step * s ahead by bytes. */ if (do_utf8) s = (char*)utf8_hop((U8*)m, len); else s = m + len; /* Fake \n at the end */ } } } else { maxiters += slen * rx->nparens; while (s < strend && --limit /* && (!rx->check_substr || ((s = CALLREG_INTUIT_START(aTHX_ rx, sv, s, strend, 0, NULL)))) */ && CALLREGEXEC(aTHX_ rx, s, strend, orig, 1 /* minend */, sv, NULL, 0)) { TAINT_IF(RX_MATCH_TAINTED(rx)); if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { m = s; s = orig; orig = rx->subbeg; s = orig + (m - s); strend = s + (strend - m); } m = rx->startp[0] + orig; dstr = NEWSV(32, m-s); sv_setpvn(dstr, s, m-s); if (make_mortal) sv_2mortal(dstr); if (do_utf8) (void)SvUTF8_on(dstr); XPUSHs(dstr); if (rx->nparens) { for (i = 1; i <= rx->nparens; i++) { s = rx->startp[i] + orig; m = rx->endp[i] + orig; /* japhy (07/27/01) -- the (m && s) test doesn't catch parens that didn't match -- they should be set to undef, not the empty string */ if (m >= orig && s >= orig) { dstr = NEWSV(33, m-s); sv_setpvn(dstr, s, m-s); } else dstr = &PL_sv_undef; /* undef, not "" */ if (make_mortal) sv_2mortal(dstr); if (do_utf8) (void)SvUTF8_on(dstr); XPUSHs(dstr); } } s = rx->endp[0] + orig; } } LEAVE_SCOPE(oldsave); iters = (SP - PL_stack_base) - base; if (iters > maxiters) DIE(aTHX_ "Split loop"); /* keep field after final delim? */ if (s < strend || (iters && origlimit)) { STRLEN l = strend - s; dstr = NEWSV(34, l); sv_setpvn(dstr, s, l); if (make_mortal) sv_2mortal(dstr); if (do_utf8) (void)SvUTF8_on(dstr); XPUSHs(dstr); iters++; } else if (!origlimit) { while (iters > 0 && (!TOPs || !SvANY(TOPs) || SvCUR(TOPs) == 0)) iters--, SP--; } if (realarray) { if (!mg) { SWITCHSTACK(ary, oldstack); if (SvSMAGICAL(ary)) { PUTBACK; mg_set((SV*)ary); SPAGAIN; } if (gimme == G_ARRAY) { EXTEND(SP, iters); Copy(AvARRAY(ary), SP + 1, iters, SV*); SP += iters; RETURN; } } else { PUTBACK; ENTER; call_method("PUSH",G_SCALAR|G_DISCARD); LEAVE; SPAGAIN; if (gimme == G_ARRAY) { /* EXTEND should not be needed - we just popped them */ EXTEND(SP, iters); for (i=0; i < iters; i++) { SV **svp = av_fetch(ary, i, FALSE); PUSHs((svp) ? *svp : &PL_sv_undef); } RETURN; } } } else { if (gimme == G_ARRAY) RETURN; } if (iters || !pm->op_pmreplroot) { GETTARGET; PUSHi(iters); RETURN; } RETPUSHUNDEF; } #ifdef USE_5005THREADS void Perl_unlock_condpair(pTHX_ void *svv) { MAGIC *mg = mg_find((SV*)svv, PERL_MAGIC_mutex); if (!mg) Perl_croak(aTHX_ "panic: unlock_condpair unlocking non-mutex"); MUTEX_LOCK(MgMUTEXP(mg)); if (MgOWNER(mg) != thr) Perl_croak(aTHX_ "panic: unlock_condpair unlocking mutex that we don't own"); MgOWNER(mg) = 0; COND_SIGNAL(MgOWNERCONDP(mg)); DEBUG_S(PerlIO_printf(Perl_debug_log, "0x%"UVxf": unlock 0x%"UVxf"\n", PTR2UV(thr), PTR2UV(svv))); MUTEX_UNLOCK(MgMUTEXP(mg)); } #endif /* USE_5005THREADS */ PP(pp_lock) { dSP; dTOPss; SV *retsv = sv; #ifdef USE_5005THREADS sv_lock(sv); #endif /* USE_5005THREADS */ #ifdef USE_ITHREADS shared_sv *ssv = Perl_sharedsv_find(aTHX_ sv); if(ssv) Perl_sharedsv_lock(aTHX_ ssv); #endif /* USE_ITHREADS */ if (SvTYPE(retsv) == SVt_PVAV || SvTYPE(retsv) == SVt_PVHV || SvTYPE(retsv) == SVt_PVCV) { retsv = refto(retsv); } SETs(retsv); RETURN; } PP(pp_threadsv) { #ifdef USE_5005THREADS dSP; EXTEND(SP, 1); if (PL_op->op_private & OPpLVAL_INTRO) PUSHs(*save_threadsv(PL_op->op_targ)); else PUSHs(THREADSV(PL_op->op_targ)); RETURN; #else DIE(aTHX_ "tried to access per-thread data in non-threaded perl"); #endif /* USE_5005THREADS */ }