X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=op.c;h=8f8e796ea20ac27c659d07875509abc080f788b8;hb=664bb207f6bd57f05b66c9abec00898987f7060b;hp=ae6297c7e091a93724e9228e26929377855afbfa;hpb=0b94c7bb9a33fcbef93724c1b5f96b2616e1e13f;p=p5sagit%2Fp5-mst-13.2.git diff --git a/op.c b/op.c index ae6297c..8f8e796 100644 --- a/op.c +++ b/op.c @@ -18,12 +18,7 @@ #include "EXTERN.h" #define PERL_IN_OP_C #include "perl.h" - -#ifdef PERL_OBJECT -#define CHECKCALL this->*PL_check -#else -#define CHECKCALL *PL_check -#endif +#include "keywords.h" /* #define PL_OP_SLAB_ALLOC */ @@ -57,7 +52,7 @@ S_Slab_Alloc(pTHX_ int m, size_t sz) ? ( op_free((OP*)o), \ Perl_croak(aTHX_ "%s trapped by operation mask", PL_op_desc[type]), \ Nullop ) \ - : (CHECKCALL[type])(aTHX_ (OP*)o)) + : CALL_FPTR(PL_check[type])(aTHX_ (OP*)o)) #define PAD_MAX 999999999 @@ -102,30 +97,9 @@ S_bad_type(pTHX_ I32 n, char *t, char *name, OP *kid) STATIC void S_no_bareword_allowed(pTHX_ OP *o) { - Perl_warn(aTHX_ "Bareword \"%s\" not allowed while \"strict subs\" in use", - SvPV_nolen(cSVOPo->op_sv)); - ++PL_error_count; -} - -void -Perl_assertref(pTHX_ OP *o) -{ - int type = o->op_type; - if (type != OP_AELEM && type != OP_HELEM && type != OP_GELEM) { - yyerror(Perl_form(aTHX_ "Can't use subscript on %s", PL_op_desc[type])); - if (type == OP_ENTERSUB || type == OP_RV2HV || type == OP_PADHV) { - dTHR; - SV *msg = sv_2mortal( - Perl_newSVpvf(aTHX_ "(Did you mean $ or @ instead of %c?)\n", - type == OP_ENTERSUB ? '&' : '%')); - if (PL_in_eval & EVAL_WARNONLY) - Perl_warn(aTHX_ "%_", msg); - else if (PL_in_eval) - sv_catsv(GvSV(PL_errgv), msg); - else - PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg)); - } - } + qerror(Perl_mess(aTHX_ + "Bareword \"%s\" not allowed while \"strict subs\" in use", + SvPV_nolen(cSVOPo->op_sv))); } /* "register" allocation */ @@ -138,9 +112,10 @@ Perl_pad_allocmy(pTHX_ char *name) SV *sv; if (!( + PL_in_my == KEY_our || isALPHA(name[1]) || (PL_hints & HINT_UTF8 && (name[1] & 0xc0) == 0xc0) || - name[1] == '_' && (int)strlen(name) > 2)) + name[1] == '_' && (int)strlen(name) > 2 )) { if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { /* 1999-02-27 mjd@plover.com */ @@ -172,8 +147,10 @@ Perl_pad_allocmy(pTHX_ char *name) && strEQ(name, SvPVX(sv))) { Perl_warner(aTHX_ WARN_UNSAFE, - "\"my\" variable %s masks earlier declaration in same %s", - name, (SvIVX(sv) == PAD_MAX ? "scope" : "statement")); + "\"%s\" variable %s masks earlier declaration in same %s", + (PL_in_my == KEY_our ? "our" : "my"), + name, + (SvIVX(sv) == PAD_MAX ? "scope" : "statement")); break; } } @@ -191,6 +168,8 @@ Perl_pad_allocmy(pTHX_ char *name) SvSTASH(sv) = (HV*)SvREFCNT_inc(PL_in_my_stash); PL_sv_objcount++; } + if (PL_in_my == KEY_our) + SvFLAGS(sv) |= SVpad_OUR; av_store(PL_comppad_name, off, sv); SvNVX(sv) = (NV)PAD_MAX; SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ @@ -258,6 +237,8 @@ S_pad_findlex(pTHX_ char *name, PADOFFSET newoff, U32 seq, CV* startcv, SvNVX(namesv) = (NV)PL_curcop->cop_seq; SvIVX(namesv) = PAD_MAX; /* A ref, intro immediately */ SvFAKE_on(namesv); /* A ref, not a real var */ + if (SvFLAGS(sv) & SVpad_OUR)/* An "our" variable */ + SvFLAGS(namesv) |= SVpad_OUR; if (SvOBJECT(sv)) { /* A typed var */ SvOBJECT_on(namesv); (void)SvUPGRADE(namesv, SVt_PVMG); @@ -382,7 +363,7 @@ Perl_pad_findmy(pTHX_ char *name) seq > I_32(SvNVX(sv)))) && strEQ(SvPVX(sv), name)) { - if (SvIVX(sv)) + if (SvIVX(sv) || SvFLAGS(sv) & SVpad_OUR) return (PADOFFSET)off; pendoff = off; /* this pending def. will override import */ } @@ -648,6 +629,7 @@ void Perl_op_free(pTHX_ OP *o) { register OP *kid, *nextkid; + OPCODE type; if (!o || o->op_seq == (U16)-1) return; @@ -658,22 +640,42 @@ Perl_op_free(pTHX_ OP *o) op_free(kid); } } + type = o->op_type; + if (type == OP_NULL) + type = o->op_targ; + + /* COP* is not cleared by op_clear() so that we may track line + * numbers etc even after null() */ + if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE) + cop_free((COP*)o); + + op_clear(o); + +#ifdef PL_OP_SLAB_ALLOC + if ((char *) o == PL_OpPtr) + { + } +#else + Safefree(o); +#endif +} +STATIC void +S_op_clear(pTHX_ OP *o) +{ switch (o->op_type) { - case OP_NULL: - o->op_targ = 0; /* Was holding old type, if any. */ - break; - case OP_ENTEREVAL: - o->op_targ = 0; /* Was holding hints. */ + case OP_NULL: /* Was holding old type, if any. */ + case OP_ENTEREVAL: /* Was holding hints. */ +#ifdef USE_THREADS + case OP_THREADSV: /* Was holding index into thr->threadsv AV. */ +#endif + o->op_targ = 0; break; #ifdef USE_THREADS case OP_ENTERITER: if (!(o->op_flags & OPf_SPECIAL)) break; /* FALL THROUGH */ - case OP_THREADSV: - o->op_targ = 0; /* Was holding index into thr->threadsv AV. */ - break; #endif /* USE_THREADS */ default: if (!(o->op_flags & OPf_REF) @@ -684,13 +686,11 @@ Perl_op_free(pTHX_ OP *o) case OP_GV: case OP_AELEMFAST: SvREFCNT_dec(cGVOPo->op_gv); - break; - case OP_NEXTSTATE: - case OP_DBSTATE: - cop_free((COP*)o); + cGVOPo->op_gv = Nullgv; break; case OP_CONST: SvREFCNT_dec(cSVOPo->op_sv); + cSVOPo->op_sv = Nullsv; break; case OP_GOTO: case OP_NEXT: @@ -700,31 +700,29 @@ Perl_op_free(pTHX_ OP *o) break; /* FALL THROUGH */ case OP_TRANS: - if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) + if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { SvREFCNT_dec(cSVOPo->op_sv); - else + cSVOPo->op_sv = Nullsv; + } + else { Safefree(cPVOPo->op_pv); + cPVOPo->op_pv = Nullch; + } break; case OP_SUBST: op_free(cPMOPo->op_pmreplroot); + cPMOPo->op_pmreplroot = Nullop; /* FALL THROUGH */ case OP_PUSHRE: case OP_MATCH: case OP_QR: ReREFCNT_dec(cPMOPo->op_pmregexp); + cPMOPo->op_pmregexp = (REGEXP*)NULL; break; } if (o->op_targ > 0) pad_free(o->op_targ); - -#ifdef PL_OP_SLAB_ALLOC - if ((char *) o == PL_OpPtr) - { - } -#else - Safefree(o); -#endif } STATIC void @@ -739,8 +737,9 @@ S_cop_free(pTHX_ COP* cop) STATIC void S_null(pTHX_ OP *o) { - if (o->op_type != OP_NULL && o->op_type != OP_THREADSV && o->op_targ > 0) - pad_free(o->op_targ); + if (o->op_type == OP_NULL) + return; + op_clear(o); o->op_targ = o->op_type; o->op_type = OP_NULL; o->op_ppaddr = PL_ppaddr[OP_NULL]; @@ -881,9 +880,12 @@ Perl_scalarvoid(pTHX_ OP *o) SV* sv; U8 want; - if (o->op_type == OP_NEXTSTATE || o->op_type == OP_DBSTATE || - (o->op_type == OP_NULL && - (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE))) + if (o->op_type == OP_NEXTSTATE + || o->op_type == OP_SETSTATE + || o->op_type == OP_DBSTATE + || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE + || o->op_targ == OP_SETSTATE + || o->op_targ == OP_DBSTATE))) { dTHR; PL_curcop = (COP*)o; /* for warning below */ @@ -1013,8 +1015,7 @@ Perl_scalarvoid(pTHX_ OP *o) } } } - null(o); /* don't execute a constant */ - SvREFCNT_dec(sv); /* don't even remember it */ + null(o); /* don't execute or even remember it */ break; case OP_POSTINC: @@ -1246,6 +1247,91 @@ Perl_mod(pTHX_ OP *o, I32 type) null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ break; } + else { /* lvalue subroutine call */ + o->op_private |= OPpLVAL_INTRO; + if (type == OP_GREPSTART || type == OP_ENTERSUB) { + /* Backward compatibility mode: */ + o->op_private |= OPpENTERSUB_INARGS; + break; + } + else { /* Compile-time error message: */ + OP *kid = cUNOPo->op_first; + CV *cv; + OP *okid; + + if (kid->op_type == OP_PUSHMARK) + goto skip_kids; + if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) + Perl_croak(aTHX_ + "panic: unexpected lvalue entersub " + "args: type/targ %ld:%ld", + (long)kid->op_type,kid->op_targ); + kid = kLISTOP->op_first; + skip_kids: + while (kid->op_sibling) + kid = kid->op_sibling; + if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { + /* Indirect call */ + if (kid->op_type == OP_METHOD_NAMED + || kid->op_type == OP_METHOD) + { + OP *newop; + + if (kid->op_sibling || kid->op_next != kid) { + yyerror("panic: unexpected optree near method call"); + break; + } + + NewOp(1101, newop, 1, OP); + newop->op_type = OP_RV2CV; + newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; + newop->op_next = newop; + kid->op_sibling = newop; + newop->op_private |= OPpLVAL_INTRO; + break; + } + + if (kid->op_type != OP_RV2CV) + Perl_croak(aTHX_ + "panic: unexpected lvalue entersub " + "entry via type/targ %ld:%ld", + (long)kid->op_type,kid->op_targ); + kid->op_private |= OPpLVAL_INTRO; + break; /* Postpone until runtime */ + } + + okid = kid; + kid = kUNOP->op_first; + if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) + kid = kUNOP->op_first; + if (kid->op_type == OP_NULL) + Perl_croak(aTHX_ + "Unexpected constant lvalue entersub " + "entry via type/targ %ld:%ld", + (long)kid->op_type,kid->op_targ); + if (kid->op_type != OP_GV) { + /* Restore RV2CV to check lvalueness */ + restore_2cv: + if (kid->op_next && kid->op_next != kid) { /* Happens? */ + okid->op_next = kid->op_next; + kid->op_next = okid; + } + else + okid->op_next = Nullop; + okid->op_type = OP_RV2CV; + okid->op_targ = 0; + okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; + okid->op_private |= OPpLVAL_INTRO; + break; + } + + cv = GvCV(kGVOP->op_gv); + if (!cv) + goto restore_2cv; + if (CvLVALUE(cv)) + break; + } + } /* FALL THROUGH */ default: nomod: @@ -1254,7 +1340,10 @@ Perl_mod(pTHX_ OP *o, I32 type) break; yyerror(Perl_form(aTHX_ "Can't modify %s in %s", (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) - ? "do block" : PL_op_desc[o->op_type]), + ? "do block" + : (o->op_type == OP_ENTERSUB + ? "non-lvalue subroutine call" + : PL_op_desc[o->op_type])), type ? PL_op_desc[type] : "local")); return o; @@ -1583,8 +1672,60 @@ Perl_ref(pTHX_ OP *o, I32 type) } -OP * -Perl_my(pTHX_ OP *o) +STATIC OP * +S_dup_attrlist(pTHX_ OP *o) +{ + OP *rop = Nullop; + + /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, + * where the first kid is OP_PUSHMARK and the remaining ones + * are OP_CONST. We need to push the OP_CONST values. + */ + if (o->op_type == OP_CONST) + rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc(cSVOPo->op_sv)); + else { + assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); + for (o = cLISTOPo->op_first; o; o=o->op_sibling) { + if (o->op_type == OP_CONST) + rop = append_elem(OP_LIST, rop, + newSVOP(OP_CONST, o->op_flags, + SvREFCNT_inc(cSVOPo->op_sv))); + } + } + return rop; +} + +STATIC void +S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs) +{ + OP *modname; /* for 'use' */ + SV *stashsv; + + /* fake up C */ + ENTER; /* need to protect against side-effects of 'use' */ + SAVEINT(PL_expect); + if (stash && HvNAME(stash)) + stashsv = newSVpv(HvNAME(stash), 0); + else + stashsv = &PL_sv_no; +#define ATTRSMODULE "attributes" + modname = newSVOP(OP_CONST, 0, + newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1)); + modname->op_private |= OPpCONST_BARE; + /* that flag is required to make 'use' work right */ + utilize(1, start_subparse(FALSE, 0), + Nullop, /* version */ + modname, + prepend_elem(OP_LIST, + newSVOP(OP_CONST, 0, stashsv), + prepend_elem(OP_LIST, + newSVOP(OP_CONST, 0, newRV(target)), + dup_attrlist(attrs)))); + LEAVE; +} + +STATIC OP * +S_my_kid(pTHX_ OP *o, OP *attrs) { OP *kid; I32 type; @@ -1595,9 +1736,13 @@ Perl_my(pTHX_ OP *o) type = o->op_type; if (type == OP_LIST) { for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) - my(kid); + my_kid(kid, attrs); } else if (type == OP_UNDEF) { return o; + } else if (type == OP_RV2SV || /* "our" declaration */ + type == OP_RV2AV || + type == OP_RV2HV) { /* XXX does this let anything illegal in? */ + return o; } else if (type != OP_PADSV && type != OP_PADAV && type != OP_PADHV && @@ -1606,12 +1751,44 @@ Perl_my(pTHX_ OP *o) yyerror(Perl_form(aTHX_ "Can't declare %s in my", PL_op_desc[o->op_type])); return o; } + else if (attrs && type != OP_PUSHMARK) { + HV *stash; + SV *padsv; + SV **namesvp; + + /* check for C when deciding package */ + namesvp = av_fetch(PL_comppad_name, o->op_targ, FALSE); + if (namesvp && *namesvp && SvOBJECT(*namesvp) && HvNAME(SvSTASH(*namesvp))) + stash = SvSTASH(*namesvp); + else + stash = PL_curstash; + padsv = PAD_SV(o->op_targ); + apply_attrs(stash, padsv, attrs); + } o->op_flags |= OPf_MOD; o->op_private |= OPpLVAL_INTRO; return o; } OP * +Perl_my_attrs(pTHX_ OP *o, OP *attrs) +{ + if (o->op_flags & OPf_PARENS) + list(o); + PL_in_my = FALSE; + PL_in_my_stash = Nullhv; + if (attrs) + SAVEFREEOP(attrs); + return my_kid(o, attrs); +} + +OP * +Perl_my(pTHX_ OP *o) +{ + return my_kid(o, Nullop); +} + +OP * Perl_sawparens(pTHX_ OP *o) { if (o) @@ -1685,8 +1862,8 @@ Perl_scope(pTHX_ OP *o) o->op_ppaddr = PL_ppaddr[OP_SCOPE]; kid = ((LISTOP*)o)->op_first; if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ - cop_free((COP*)kid); - null(kid); + kid->op_type = OP_SETSTATE; + kid->op_ppaddr = PL_ppaddr[OP_SETSTATE]; } } else @@ -1891,7 +2068,8 @@ Perl_fold_constants(pTHX_ register OP *o) goto nope; /* Don't try to run w/ errors */ for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { - if (curop->op_type != OP_CONST && + if ((curop->op_type != OP_CONST || + (curop->op_private & OPpCONST_BARE)) && curop->op_type != OP_LIST && curop->op_type != OP_SCALAR && curop->op_type != OP_NULL && @@ -2763,7 +2941,6 @@ Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg) } else { OP *pack; - OP *meth; if (version->op_type != OP_CONST || !SvNIOK(vesv)) Perl_croak(aTHX_ "Version number must be constant number"); @@ -2772,11 +2949,11 @@ Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg) pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); /* Fake up a method call to VERSION */ - meth = newSVOP(OP_CONST, 0, newSVpvn("VERSION", 7)); veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, append_elem(OP_LIST, prepend_elem(OP_LIST, pack, list(version)), - newUNOP(OP_METHOD, 0, meth))); + newSVOP(OP_METHOD_NAMED, 0, + newSVpvn("VERSION", 7)))); } } @@ -2789,15 +2966,12 @@ Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg) else { /* Make copy of id so we don't free it twice */ pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); - meth = newSVOP(OP_CONST, 0, - aver - ? newSVpvn("import", 6) - : newSVpvn("unimport", 8) - ); imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, append_elem(OP_LIST, prepend_elem(OP_LIST, pack, list(arg)), - newUNOP(OP_METHOD, 0, meth))); + newSVOP(OP_METHOD_NAMED, 0, + aver ? newSVpvn("import", 6) + : newSVpvn("unimport", 8)))); } /* Fake up a require, handle override, if any */ @@ -2817,9 +2991,10 @@ Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg) } /* Fake up the BEGIN {}, which does its thing immediately. */ - newSUB(floor, + newATTRSUB(floor, newSVOP(OP_CONST, 0, newSVpvn("BEGIN", 5)), Nullop, + Nullop, append_elem(OP_LINESEQ, append_elem(OP_LINESEQ, newSTATEOP(0, Nullch, rqop), @@ -3882,7 +4057,7 @@ Perl_op_const_sv(pTHX_ OP *o, CV *cv) for (; o; o = o->op_next) { OPCODE type = o->op_type; - if(sv && o->op_next == o) + if (sv && o->op_next == o) return sv; if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) continue; @@ -3906,14 +4081,35 @@ Perl_op_const_sv(pTHX_ OP *o, CV *cv) return sv; } +void +Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) +{ + if (o) + SAVEFREEOP(o); + if (proto) + SAVEFREEOP(proto); + if (attrs) + SAVEFREEOP(attrs); + if (block) + SAVEFREEOP(block); + Perl_croak(aTHX_ "\"my sub\" not yet implemented"); +} + CV * Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) { + return Perl_newATTRSUB(aTHX_ floor, o, proto, Nullop, block); +} + +CV * +Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) +{ dTHR; STRLEN n_a; char *name = o ? SvPVx(cSVOPo->op_sv, n_a) : Nullch; GV *gv = gv_fetchpv(name ? name : "__ANON__", - GV_ADDMULTI | (block ? 0 : GV_NOINIT), SVt_PVCV); + GV_ADDMULTI | ((block || attrs) ? 0 : GV_NOINIT), + SVt_PVCV); char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, n_a) : Nullch; register CV *cv=0; I32 ix; @@ -3922,8 +4118,10 @@ Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) SAVEFREEOP(o); if (proto) SAVEFREEOP(proto); + if (attrs) + SAVEFREEOP(attrs); - if (SvTYPE(gv) != SVt_PVGV) { /* Prototype now, and had + if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at maximum a prototype before. */ if (SvTYPE(gv) > SVt_NULL) { if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1) @@ -3951,7 +4149,7 @@ Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { SV* const_sv; bool const_changed = TRUE; - if (!block) { + if (!block && !attrs) { /* just a "sub foo;" when &foo is already defined */ SAVEFREESV(PL_compcv); goto done; @@ -3959,6 +4157,8 @@ Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) /* ahem, death to those who redefine active sort subs */ if (PL_curstackinfo->si_type == PERLSI_SORT && PL_sortcop == CvSTART(cv)) Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", name); + if (!block) + goto withattrs; if(const_sv = cv_const_sv(cv)) const_changed = sv_cmp(const_sv, op_const_sv(block, Nullcv)); if ((const_sv && const_changed) || ckWARN(WARN_REDEFINE) @@ -3970,14 +4170,46 @@ Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) PL_curcop->cop_line = PL_copline; Perl_warner(aTHX_ WARN_REDEFINE, const_sv ? "Constant subroutine %s redefined" - : "Subroutine %s redefined", name); + : "Subroutine %s redefined", name); PL_curcop->cop_line = oldline; } SvREFCNT_dec(cv); cv = Nullcv; } } + withattrs: + if (attrs) { + HV *stash; + SV *rcv; + + /* Need to do a C + * before we clobber PL_compcv. + */ + if (cv && !block) { + rcv = (SV*)cv; + if (CvGV(cv) && GvSTASH(CvGV(cv)) && HvNAME(GvSTASH(CvGV(cv)))) + stash = GvSTASH(CvGV(cv)); + else if (CvSTASH(cv) && HvNAME(CvSTASH(cv))) + stash = CvSTASH(cv); + else + stash = PL_curstash; + } + else { + /* possibly about to re-define existing subr -- ignore old cv */ + rcv = (SV*)PL_compcv; + if (name && GvSTASH(gv) && HvNAME(GvSTASH(gv))) + stash = GvSTASH(gv); + else + stash = PL_curstash; + } + apply_attrs(stash, rcv, attrs); + } if (cv) { /* must reuse cv if autoloaded */ + if (!block) { + /* got here with just attrs -- work done, so bug out */ + SAVEFREESV(PL_compcv); + goto done; + } cv_undef(cv); CvFLAGS(cv) = CvFLAGS(PL_compcv); CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); @@ -4075,7 +4307,12 @@ Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) } } - CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); + if(CvLVALUE(cv)) { + CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, scalarseq(block)); + } + else { + CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); + } CvSTART(cv) = LINKLIST(CvROOT(cv)); CvROOT(cv)->op_next = 0; peep(CvSTART(cv)); @@ -4165,10 +4402,11 @@ Perl_newCONSTSUB(pTHX_ HV *stash, char *name, SV *sv) if(stash) PL_curstash = PL_curcop->cop_stash = stash; - newSUB( + newATTRSUB( start_subparse(FALSE, 0), newSVOP(OP_CONST, 0, newSVpv(name,0)), newSVOP(OP_CONST, 0, &PL_sv_no), /* SvPV(&PL_sv_no) == "" -- GMB */ + Nullop, newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv)) ); @@ -4321,8 +4559,15 @@ Perl_newANONHASH(pTHX_ OP *o) OP * Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) { + return newANONATTRSUB(floor, proto, Nullop, block); +} + +OP * +Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) +{ return newUNOP(OP_REFGEN, 0, - newSVOP(OP_ANONCODE, 0, (SV*)newSUB(floor, 0, proto, block))); + newSVOP(OP_ANONCODE, 0, + (SV*)newATTRSUB(floor, 0, proto, attrs, block))); } OP * @@ -4707,6 +4952,7 @@ Perl_ck_rvconst(pTHX_ register OP *o) kid->op_type = OP_GV; SvREFCNT_dec(kid->op_sv); kid->op_sv = SvREFCNT_inc(gv); + kid->op_ppaddr = PL_ppaddr[OP_GV]; } } return o; @@ -4802,10 +5048,17 @@ Perl_ck_fun(pTHX_ OP *o) char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); OP *newop = newAVREF(newGVOP(OP_GV, 0, gv_fetchpv(name, TRUE, SVt_PVAV) )); +#ifdef IV_IS_QUAD + if (ckWARN(WARN_SYNTAX)) + Perl_warner(aTHX_ WARN_SYNTAX, + "Array @%s missing the @ in argument %" PERL_PRId64 " of %s()", + name, (IV)numargs, PL_op_desc[type]); +#else if (ckWARN(WARN_SYNTAX)) Perl_warner(aTHX_ WARN_SYNTAX, "Array @%s missing the @ in argument %ld of %s()", name, (long)numargs, PL_op_desc[type]); +#endif op_free(kid); kid = newop; kid->op_sibling = sibl; @@ -4822,10 +5075,17 @@ Perl_ck_fun(pTHX_ OP *o) char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); OP *newop = newHVREF(newGVOP(OP_GV, 0, gv_fetchpv(name, TRUE, SVt_PVHV) )); +#ifdef IV_IS_QUAD + if (ckWARN(WARN_SYNTAX)) + Perl_warner(aTHX_ WARN_SYNTAX, + "Hash %%%s missing the %% in argument %" PERL_PRId64 " of %s()", + name, (IV)numargs, PL_op_desc[type]); +#else if (ckWARN(WARN_SYNTAX)) Perl_warner(aTHX_ WARN_SYNTAX, "Hash %%%s missing the %% in argument %ld of %s()", name, (long)numargs, PL_op_desc[type]); +#endif op_free(kid); kid = newop; kid->op_sibling = sibl; @@ -5035,6 +5295,7 @@ Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ if ((o->op_flags & OPf_KIDS) && ckWARN(WARN_DEPRECATED)) { switch (cUNOPo->op_first->op_type) { case OP_RV2AV: + break; /* Globals via GV can be undef */ case OP_PADAV: case OP_AASSIGN: /* Is this a good idea? */ Perl_warner(aTHX_ WARN_DEPRECATED, @@ -5043,6 +5304,7 @@ Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ "(Maybe you should just omit the defined()?)\n"); break; case OP_RV2HV: + break; /* Globals via GV can be undef */ case OP_PADHV: Perl_warner(aTHX_ WARN_DEPRECATED, "defined(%hash) is deprecated"); @@ -5127,13 +5389,33 @@ Perl_ck_sassign(pTHX_ OP *o) OP *kkid = kid->op_sibling; /* Can just relocate the target. */ - if (kkid && kkid->op_type == OP_PADSV) { + if (kkid && kkid->op_type == OP_PADSV + && !(kkid->op_private & OPpLVAL_INTRO)) + { /* Concat has problems if target is equal to right arg. */ - if (kid->op_type == OP_CONCAT - && kLISTOP->op_first->op_sibling->op_type == OP_PADSV - && kLISTOP->op_first->op_sibling->op_targ == kkid->op_targ) - { - return o; + if (kid->op_type == OP_CONCAT) { + if (kLISTOP->op_first->op_sibling->op_type == OP_PADSV + && kLISTOP->op_first->op_sibling->op_targ == kkid->op_targ) + return o; + } + else if (kid->op_type == OP_JOIN) { + /* do_join has problems if the arguments coincide with target. + In fact the second argument *can* safely coincide, + but ignore=pessimize this rare occasion. */ + OP *arg = kLISTOP->op_first->op_sibling; /* Skip PUSHMARK */ + + while (arg) { + if (arg->op_type == OP_PADSV + && arg->op_targ == kkid->op_targ) + return o; + arg = arg->op_sibling; + } + } + else if (kid->op_type == OP_QUOTEMETA) { + /* quotemeta has problems if the argument coincides with target. */ + if (kLISTOP->op_first->op_type == OP_PADSV + && kLISTOP->op_first->op_targ == kkid->op_targ) + return o; } kid->op_targ = kkid->op_targ; /* Now we do not need PADSV and SASSIGN. */ @@ -5168,6 +5450,26 @@ Perl_ck_match(pTHX_ OP *o) } OP * +Perl_ck_method(pTHX_ OP *o) +{ + OP *kid = cUNOPo->op_first; + if (kid->op_type == OP_CONST) { + SV* sv = kSVOP->op_sv; + if (!(strchr(SvPVX(sv), ':') || strchr(SvPVX(sv), '\''))) { + OP *cmop; + sv_upgrade(sv, SVt_PVIV); + SvIOK_on(sv); + PERL_HASH(SvUVX(sv), SvPVX(sv), SvCUR(sv)); + cmop = newSVOP(OP_METHOD_NAMED, 0, sv); + kSVOP->op_sv = Nullsv; + op_free(o); + return cmop; + } + } + return o; +} + +OP * Perl_ck_null(pTHX_ OP *o) { return o; @@ -5374,9 +5676,10 @@ S_simplify_sort(pTHX_ OP *o) o->op_private |= OPpSORT_NUMERIC; if (k->op_type == OP_I_NCMP) o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; - op_free(cLISTOPo->op_first->op_sibling); /* delete comparison block */ - cLISTOPo->op_first->op_sibling = cLISTOPo->op_last; - cLISTOPo->op_children = 1; + kid = cLISTOPo->op_first->op_sibling; + cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ + op_free(kid); /* then delete it */ + cLISTOPo->op_children--; } OP * @@ -5431,6 +5734,23 @@ Perl_ck_split(pTHX_ OP *o) } OP * +Perl_ck_join(pTHX_ OP *o) +{ + if (ckWARN(WARN_SYNTAX)) { + OP *kid = cLISTOPo->op_first->op_sibling; + if (kid && kid->op_type == OP_MATCH) { + char *pmstr = "STRING"; + if (kPMOP->op_pmregexp) + pmstr = kPMOP->op_pmregexp->precomp; + Perl_warner(aTHX_ WARN_SYNTAX, + "/%s/ should probably be written as \"%s\"", + pmstr, pmstr); + } + } + return ck_fun(o); +} + +OP * Perl_ck_subr(pTHX_ OP *o) { dTHR; @@ -5445,21 +5765,24 @@ Perl_ck_subr(pTHX_ OP *o) I32 arg = 0; STRLEN n_a; + o->op_private |= OPpENTERSUB_HASTARG; for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; if (cvop->op_type == OP_RV2CV) { SVOP* tmpop; o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); null(cvop); /* disable rv2cv */ tmpop = (SVOP*)((UNOP*)cvop)->op_first; - if (tmpop->op_type == OP_GV) { + if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { cv = GvCVu(tmpop->op_sv); - if (cv && SvPOK(cv) && !(o->op_private & OPpENTERSUB_AMPER)) { + if (!cv) + tmpop->op_private |= OPpEARLY_CV; + else if (SvPOK(cv)) { namegv = CvANON(cv) ? (GV*)tmpop->op_sv : CvGV(cv); proto = SvPV((SV*)cv, n_a); } } } - else if (cvop->op_type == OP_METHOD) { + else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { if (o2->op_type == OP_CONST) o2->op_private &= ~OPpCONST_STRICT; else if (o2->op_type == OP_LIST) { @@ -5548,6 +5871,8 @@ Perl_ck_subr(pTHX_ OP *o) case '$': if (o2->op_type != OP_RV2SV && o2->op_type != OP_PADSV + && o2->op_type != OP_HELEM + && o2->op_type != OP_AELEM && o2->op_type != OP_THREADSV) { bad_type(arg, "scalar", gv_ename(namegv), o2); @@ -5627,6 +5952,7 @@ Perl_peep(pTHX_ register OP *o) dTHR; register OP* oldop = 0; STRLEN n_a; + OP *last_composite = Nullop; if (!o || o->op_seq) return; @@ -5640,10 +5966,12 @@ Perl_peep(pTHX_ register OP *o) PL_op_seqmax++; PL_op = o; switch (o->op_type) { + case OP_SETSTATE: case OP_NEXTSTATE: case OP_DBSTATE: PL_curcop = ((COP*)o); /* for warnings */ o->op_seq = PL_op_seqmax++; + last_composite = Nullop; break; case OP_CONST: @@ -5672,8 +6000,10 @@ Perl_peep(pTHX_ register OP *o) && (((LISTOP*)o)->op_first->op_sibling->op_targ == o->op_next->op_targ))) { goto ignore_optimization; - } else { + } + else { o->op_targ = o->op_next->op_targ; + o->op_private |= OPpTARGET_MY; } } null(o->op_next); @@ -5688,8 +6018,12 @@ Perl_peep(pTHX_ register OP *o) } goto nothin; case OP_NULL: - if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) + if (o->op_targ == OP_NEXTSTATE + || o->op_targ == OP_DBSTATE + || o->op_targ == OP_SETSTATE) + { PL_curcop = ((COP*)o); + } goto nothin; case OP_SCALAR: case OP_LINESEQ: @@ -5724,7 +6058,6 @@ Perl_peep(pTHX_ register OP *o) <= 255 && i >= 0) { - SvREFCNT_dec(((SVOP*)pop)->op_sv); null(o->op_next); null(pop->op_next); null(pop); @@ -5736,6 +6069,18 @@ Perl_peep(pTHX_ register OP *o) GvAVn(((GVOP*)o)->op_gv); } } + else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_UNSAFE)) { + GV *gv = cGVOPo->op_gv; + if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX(GvCV(gv))) { + /* XXX could check prototype here instead of just carping */ + SV *sv = sv_newmortal(); + gv_efullname3(sv, gv, Nullch); + Perl_warner(aTHX_ WARN_UNSAFE, + "%s() called too early to check prototype", + SvPV_nolen(sv)); + } + } + o->op_seq = PL_op_seqmax++; break; @@ -5743,6 +6088,8 @@ Perl_peep(pTHX_ register OP *o) case OP_GREPWHILE: case OP_AND: case OP_OR: + case OP_ANDASSIGN: + case OP_ORASSIGN: case OP_COND_EXPR: case OP_RANGE: o->op_seq = PL_op_seqmax++; @@ -5823,6 +6170,40 @@ Perl_peep(pTHX_ register OP *o) break; } + case OP_RV2AV: + case OP_RV2HV: + if (!(o->op_flags & OPf_WANT) + || o->op_flags & OPf_WANT == OPf_WANT_LIST) + last_composite = o; + o->op_seq = PL_op_seqmax++; + break; + + case OP_RETURN: + if (o->op_next->op_type != OP_LEAVESUBLV) { + o->op_seq = PL_op_seqmax++; + break; + } + /* FALL THROUGH */ + + case OP_LEAVESUBLV: + if (last_composite) { + OP *r = last_composite; + + while (r->op_sibling) + r = r->op_sibling; + if (r->op_next == o + || (r->op_next->op_type == OP_LIST + && r->op_next->op_next == o)) + { + if (last_composite->op_type == OP_RV2AV) + yyerror("Lvalue subs returning arrays not implemented yet"); + else + yyerror("Lvalue subs returning hashes not implemented yet"); + ; + } + } + /* FALL THROUGH */ + default: o->op_seq = PL_op_seqmax++; break;