X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=gv.c;h=317cbb0a3376c3089727ecb400e930ee0b32ed53;hb=dd629d5bb3bd7014585b7aad3c6715a5011673bc;hp=50dc34d83fe50e8d264d91d0471ec342bdb403c4;hpb=57843af05bc7863df9b9bfb6b37e3a29d08532a9;p=p5sagit%2Fp5-mst-13.2.git diff --git a/gv.c b/gv.c index 50dc34d..317cbb0 100644 --- a/gv.c +++ b/gv.c @@ -1,6 +1,6 @@ /* gv.c * - * Copyright (c) 1991-1999, Larry Wall + * Copyright (c) 1991-2000, 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. @@ -59,6 +59,9 @@ Perl_gv_fetchfile(pTHX_ const char *name) STRLEN tmplen; GV *gv; + if (!PL_defstash) + return Nullgv; + tmplen = strlen(name) + 2; if (tmplen < sizeof smallbuf) tmpbuf = smallbuf; @@ -151,6 +154,27 @@ S_gv_init_sv(pTHX_ GV *gv, I32 sv_type) } } +/* +=for apidoc gv_fetchmeth + +Returns the glob with the given C and a defined subroutine or +C. The glob lives in the given C, or in the stashes +accessible via @ISA and @UNIVERSAL. + +The argument C should be either 0 or -1. If C, as a +side-effect creates a glob with the given C in the given C +which in the case of success contains an alias for the subroutine, and sets +up caching info for this glob. Similarly for all the searched stashes. + +This function grants C<"SUPER"> token as a postfix of the stash name. The +GV returned from C may be a method cache entry, which is not +visible to Perl code. So when calling C, you should not use +the GV directly; instead, you should use the method's CV, which can be +obtained from the GV with the C macro. + +=cut +*/ + GV * Perl_gv_fetchmeth(pTHX_ HV *stash, const char *name, STRLEN len, I32 level) { @@ -272,12 +296,48 @@ Perl_gv_fetchmeth(pTHX_ HV *stash, const char *name, STRLEN len, I32 level) return 0; } +/* +=for apidoc gv_fetchmethod + +See L. + +=cut +*/ + GV * Perl_gv_fetchmethod(pTHX_ HV *stash, const char *name) { return gv_fetchmethod_autoload(stash, name, TRUE); } +/* +=for apidoc gv_fetchmethod_autoload + +Returns the glob which contains the subroutine to call to invoke the method +on the C. In fact in the presence of autoloading this may be the +glob for "AUTOLOAD". In this case the corresponding variable $AUTOLOAD is +already setup. + +The third parameter of C determines whether +AUTOLOAD lookup is performed if the given method is not present: non-zero +means yes, look for AUTOLOAD; zero means no, don't look for AUTOLOAD. +Calling C is equivalent to calling C +with a non-zero C parameter. + +These functions grant C<"SUPER"> token as a prefix of the method name. Note +that if you want to keep the returned glob for a long time, you need to +check for it being "AUTOLOAD", since at the later time the call may load a +different subroutine due to $AUTOLOAD changing its value. Use the glob +created via a side effect to do this. + +These functions have the same side-effects and as C with +C. C should be writable if contains C<':'> or C<' +''>. The warning against passing the GV returned by C to +C apply equally to these functions. + +=cut +*/ + GV * Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload) { @@ -300,7 +360,7 @@ Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload) if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) { /* ->SUPER::method should really be looked up in original stash */ SV *tmpstr = sv_2mortal(Perl_newSVpvf(aTHX_ "%s::SUPER", - HvNAME(PL_curcop->cop_stash))); + CopSTASHPV(PL_curcop))); stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE); DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n", origname, HvNAME(stash), name) ); @@ -384,6 +444,17 @@ Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method) return gv; } +/* +=for apidoc gv_stashpv + +Returns a pointer to the stash for a specified package. If C is +set then the package will be created if it does not already exist. If +C is not set and the package does not exist then NULL is +returned. + +=cut +*/ + HV* Perl_gv_stashpv(pTHX_ const char *name, I32 create) { @@ -419,6 +490,15 @@ Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 create) return stash; } +/* +=for apidoc gv_stashsv + +Returns a pointer to the stash for a specified package. See +C. + +=cut +*/ + HV* Perl_gv_stashsv(pTHX_ SV *sv, I32 create) { @@ -445,8 +525,8 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) name++; for (namend = name; *namend; namend++) { - if ((*namend == '\'' && namend[1]) || - (*namend == ':' && namend[1] == ':')) + if ((*namend == ':' && namend[1] == ':') + || (*namend == '\'' && namend[1])) { if (!stash) stash = PL_defstash; @@ -501,9 +581,7 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) /* No stash in name, so see how we can default */ if (!stash) { - if (isIDFIRST(*name) - || (IN_UTF8 && ((*name & 0xc0) == 0xc0) && isIDFIRST_utf8((U8*)name))) - { + if (isIDFIRST_lazy(name)) { bool global = FALSE; if (isUPPER(*name)) { @@ -530,7 +608,6 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) else if ((COP*)PL_curcop == &PL_compiling) { stash = PL_curstash; if (add && (PL_hints & HINT_STRICT_VARS) && - !(add & GV_ADDOUR) && sv_type != SVt_PVCV && sv_type != SVt_PVGV && sv_type != SVt_PVFM && @@ -559,7 +636,7 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) } } else - stash = PL_curcop->cop_stash; + stash = CopSTASH(PL_curcop); } else stash = PL_defstash; @@ -652,10 +729,15 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) if (strEQ(name, "SIG")) { HV *hv; I32 i; + if (!PL_psig_ptr) { + int sig_num[] = { SIG_NUM }; + New(73, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*); + New(73, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*); + } GvMULTI_on(gv); hv = GvHVn(gv); hv_magic(hv, gv, 'S'); - for(i = 1; PL_sig_name[i]; i++) { + for (i = 1; PL_sig_name[i]; i++) { SV ** init; init = hv_fetch(hv, PL_sig_name[i], strlen(PL_sig_name[i]), 1); if (init) @@ -745,25 +827,26 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) case '\\': case '/': case '|': - case '\001': - case '\003': - case '\004': - case '\005': - case '\006': - case '\010': - case '\011': /* NOT \t in EBCDIC */ - case '\017': - case '\020': - case '\024': + case '\001': /* $^A */ + case '\003': /* $^C */ + case '\004': /* $^D */ + case '\005': /* $^E */ + case '\006': /* $^F */ + case '\010': /* $^H */ + case '\011': /* $^I, NOT \t in EBCDIC */ + case '\017': /* $^O */ + case '\020': /* $^P */ + case '\024': /* $^T */ if (len > 1) break; goto magicalize; - case '\023': + case '\023': /* $^S */ if (len > 1) break; goto ro_magicalize; - case '\027': /* $^W & $^Warnings */ - if (len > 1 && strNE(name, "\027arnings")) + case '\027': /* $^W & $^WARNING_BITS */ + if (len > 1 && strNE(name, "\027ARNING_BITS") + && strNE(name, "\027IDE_SYSTEM_CALLS")) break; goto magicalize; @@ -790,7 +873,7 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) sv_magic(GvSV(gv), (SV*)gv, 0, name, len); break; - case '\014': + case '\014': /* $^L */ if (len > 1) break; sv_setpv(GvSV(gv),"\f"); @@ -805,11 +888,19 @@ Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) if (len == 1) { SV *sv = GvSV(gv); (void)SvUPGRADE(sv, SVt_PVNV); - sv_setpv(sv, PL_patchlevel); - (void)sv_2nv(sv); + SvNVX(sv) = SvNVX(PL_patchlevel); + SvNOK_on(sv); + (void)SvPV_nolen(sv); SvREADONLY_on(sv); } break; + case '\026': /* $^V */ + if (len == 1) { + SV *sv = GvSV(gv); + GvSV(gv) = SvREFCNT_inc(PL_patchlevel); + SvREFCNT_dec(sv); + } + break; } return gv; } @@ -929,6 +1020,8 @@ Perl_newGVgen(pTHX_ char *pack) GP* Perl_gp_ref(pTHX_ GP *gp) { + if (!gp) + return (GP*)NULL; gp->gp_refcnt++; if (gp->gp_cv) { if (gp->gp_cvgen) { @@ -1355,7 +1448,7 @@ Perl_amagic_call(pTHX_ SV *left, SV *right, int method, int flags) if (amtp && amtp->fallback >= AMGfallYES) { DEBUG_o( Perl_deb(aTHX_ "%s", SvPVX(msg)) ); } else { - Perl_croak(aTHX_ "%_", msg); + Perl_croak(aTHX_ "%"SVf, msg); } return NULL; }