X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/04ec7e598cf9b8c51b752c7cbcd2ea2b582dfcbd..HEAD:/gv.h?ds=sidebyside diff --git a/gv.h b/gv.h index a393262..2de1767 100644 --- a/gv.h +++ b/gv.h @@ -12,48 +12,48 @@ struct gp { SV * gp_sv; /* scalar value */ struct io * gp_io; /* filehandle value */ CV * gp_cv; /* subroutine value */ - U32 gp_cvgen; /* generational validity of cached gv_cv */ + U32 gp_cvgen; /* generational validity of cached gp_cv */ U32 gp_refcnt; /* how many globs point to this? */ HV * gp_hv; /* hash value */ AV * gp_av; /* array value */ CV * gp_form; /* format value */ GV * gp_egv; /* effective gv, if *glob */ - line_t gp_line; /* line first declared at (for -w) */ + PERL_BITFIELD32 gp_line:31; /* line first declared at (for -w) */ + PERL_BITFIELD32 gp_flags:1; HEK * gp_file_hek; /* file first declared in (for -w) */ }; #define GvXPVGV(gv) ((XPVGV*)SvANY(gv)) -#if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__INTEL_COMPILER) +#if defined (DEBUGGING) && defined(PERL_USE_GCC_BRACE_GROUPS) && !defined(__INTEL_COMPILER) # define GvGP(gv) \ - (0+(*({GV *const _gvgp = (GV *) (gv); \ - assert(SvTYPE(_gvgp) == SVt_PVGV || SvTYPE(_gvgp) == SVt_PVLV); \ - assert(isGV_with_GP(_gvgp)); \ - &((_gvgp)->sv_u.svu_gp);}))) + ((GP *)(*({GV *const _gvgp = (GV *) (gv); \ + assert(SvTYPE(_gvgp) == SVt_PVGV || SvTYPE(_gvgp) == SVt_PVLV); \ + assert(isGV_with_GP(_gvgp)); \ + &((_gvgp)->sv_u.svu_gp);}))) # define GvGP_set(gv,gp) \ - {GV *const _gvgp = (GV *) (gv); \ - assert(SvTYPE(_gvgp) == SVt_PVGV || SvTYPE(_gvgp) == SVt_PVLV); \ - assert(isGV_with_GP(_gvgp)); \ - (_gvgp)->sv_u.svu_gp = (gp); } + {GV *const _gvgp = (GV *) (gv); \ + assert(SvTYPE(_gvgp) == SVt_PVGV || SvTYPE(_gvgp) == SVt_PVLV); \ + assert(isGV_with_GP(_gvgp)); \ + (_gvgp)->sv_u.svu_gp = (gp); } # define GvFLAGS(gv) \ - (*({GV *const _gvflags = (GV *) (gv); \ - assert(SvTYPE(_gvflags) == SVt_PVGV || SvTYPE(_gvflags) == SVt_PVLV); \ - assert(isGV_with_GP(_gvflags)); \ - &(GvXPVGV(_gvflags)->xpv_cur);})) + (*({GV *const _gvflags = (GV *) (gv); \ + assert(SvTYPE(_gvflags) == SVt_PVGV || SvTYPE(_gvflags) == SVt_PVLV); \ + assert(isGV_with_GP(_gvflags)); \ + &(GvXPVGV(_gvflags)->xpv_cur);})) # define GvSTASH(gv) \ - (*({ GV * const _gvstash = (GV *) (gv); \ - assert(isGV_with_GP(_gvstash)); \ - assert(SvTYPE(_gvstash) == SVt_PVGV || SvTYPE(_gvstash) >= SVt_PVLV); \ - &(GvXPVGV(_gvstash)->xnv_u.xgv_stash); \ - })) + (*({ GV * const _gvstash = (GV *) (gv); \ + assert(isGV_with_GP(_gvstash)); \ + assert(SvTYPE(_gvstash) == SVt_PVGV || SvTYPE(_gvstash) >= SVt_PVLV); \ + &(GvXPVGV(_gvstash)->xnv_u.xgv_stash); \ + })) # define GvNAME_HEK(gv) \ (*({ GV * const _gvname_hek = (GV *) (gv); \ - assert(isGV_with_GP(_gvname_hek)); \ - assert(SvTYPE(_gvname_hek) == SVt_PVGV || SvTYPE(_gvname_hek) >= SVt_PVLV); \ - assert(!SvVALID(_gvname_hek)); \ - &(GvXPVGV(_gvname_hek)->xiv_u.xivu_namehek); \ - })) + assert(isGV_with_GP(_gvname_hek)); \ + assert(SvTYPE(_gvname_hek) == SVt_PVGV || SvTYPE(_gvname_hek) >= SVt_PVLV); \ + &(GvXPVGV(_gvname_hek)->xiv_u.xivu_namehek); \ + })) # define GvNAME_get(gv) ({ assert(GvNAME_HEK(gv)); (char *)HEK_KEY(GvNAME_HEK(gv)); }) # define GvNAMELEN_get(gv) ({ assert(GvNAME_HEK(gv)); HEK_LEN(GvNAME_HEK(gv)); }) # define GvNAMEUTF8(gv) ({ assert(GvNAME_HEK(gv)); HEK_UTF8(GvNAME_HEK(gv)); }) @@ -71,26 +71,38 @@ struct gp { #define GvNAME(gv) GvNAME_get(gv) #define GvNAMELEN(gv) GvNAMELEN_get(gv) -#define GvASSIGN_GENERATION(gv) (0 + ((XPV*) SvANY(gv))->xpv_len) -#define GvASSIGN_GENERATION_set(gv,val) \ - STMT_START { assert(SvTYPE(gv) == SVt_PVGV); \ - (((XPV*) SvANY(gv))->xpv_len = (val)); } STMT_END - /* -=head1 GV Functions - =for apidoc Am|SV*|GvSV|GV* gv Return the SV from the GV. +Prior to Perl v5.9.3, this would add a scalar if none existed. Nowadays, use +C> for that, or compile perl with S>. See +L. + +=for apidoc Am|SV*|GvSVn|GV* gv +Like C>, but creates an empty scalar if none already exists. + +=for apidoc Am|AV*|GvAV|GV* gv + +Return the AV from the GV. + +=for apidoc Am|HV*|GvHV|GV* gv + +Return the HV from the GV. + +=for apidoc Am|CV*|GvCV|GV* gv + +Return the CV from the GV. + =cut */ #define GvSV(gv) (GvGP(gv)->gp_sv) #ifdef PERL_DONT_CREATE_GVSV #define GvSVn(gv) (*(GvGP(gv)->gp_sv ? \ - &(GvGP(gv)->gp_sv) : \ - &(GvGP(gv_SVadd(gv))->gp_sv))) + &(GvGP(gv)->gp_sv) : \ + &(GvGP(gv_SVadd(gv))->gp_sv))) #else #define GvSVn(gv) GvSV(gv) #endif @@ -114,23 +126,26 @@ Return the SV from the GV. #define GvAV(gv) (GvGP(gv)->gp_av) #define GvAVn(gv) (GvGP(gv)->gp_av ? \ - GvGP(gv)->gp_av : \ - GvGP(gv_AVadd(gv))->gp_av) + GvGP(gv)->gp_av : \ + GvGP(gv_AVadd(gv))->gp_av) #define GvHV(gv) ((GvGP(gv))->gp_hv) #define GvHVn(gv) (GvGP(gv)->gp_hv ? \ - GvGP(gv)->gp_hv : \ - GvGP(gv_HVadd(gv))->gp_hv) + GvGP(gv)->gp_hv : \ + GvGP(gv_HVadd(gv))->gp_hv) -#define GvCV(gv) (0+GvGP(gv)->gp_cv) +#define GvCV(gv) ((CV*)GvGP(gv)->gp_cv) #define GvCV_set(gv,cv) (GvGP(gv)->gp_cv = (cv)) #define GvCVGEN(gv) (GvGP(gv)->gp_cvgen) #define GvCVu(gv) (GvGP(gv)->gp_cvgen ? NULL : GvGP(gv)->gp_cv) +#define GvGPFLAGS(gv) (GvGP(gv)->gp_flags) + #define GvLINE(gv) (GvGP(gv)->gp_line) #define GvFILE_HEK(gv) (GvGP(gv)->gp_file_hek) -#define GvFILE(gv) (GvFILE_HEK(gv) ? HEK_KEY(GvFILE_HEK(gv)) : NULL) -#define GvFILEGV(gv) (gv_fetchfile(GvFILE(gv))) +#define GvFILEx(gv) HEK_KEY(GvFILE_HEK(gv)) +#define GvFILE(gv) (GvFILE_HEK(gv) ? GvFILEx(gv) : NULL) +#define GvFILEGV(gv) (GvFILE_HEK(gv) ? gv_fetchfile(GvFILEx(gv)) : NULL) #define GvEGV(gv) (GvGP(gv)->gp_egv) #define GvEGVx(gv) (isGV_with_GP(gv) ? GvEGV(gv) : NULL) @@ -140,15 +155,29 @@ Return the SV from the GV. #define GvENAME_HEK(gv) GvNAME_HEK(GvEGV(gv) ? GvEGV(gv) : gv) #define GvESTASH(gv) GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv) +/* GVf_INTRO is one-shot flag which indicates that the next assignment + of a reference to the glob is to be localised; it distinguishes + 'local *g = $ref' from '*g = $ref'. + + GVf_MULTI is used to implement the "used only once" warning. It is + always set on a glob when an existing name is referenced, and when + a name is created when the warning is disabled. A post parse scan + in gv_check() then reports any names where this isn't set. + + GVf_ONCE_FATAL is set on a glob when it is created and fatal "used + only once" warnings are enabled, since PL_curcop no longer has the + fatal flag set at the point where the warnings are reported. +*/ #define GVf_INTRO 0x01 #define GVf_MULTI 0x02 #define GVf_ASSUMECV 0x04 -#define GVf_IN_PAD 0x08 +#define GVf_RESERVED 0x08 /* unused */ #define GVf_IMPORTED 0xF0 #define GVf_IMPORTED_SV 0x10 #define GVf_IMPORTED_AV 0x20 #define GVf_IMPORTED_HV 0x40 #define GVf_IMPORTED_CV 0x80 +#define GVf_ONCE_FATAL 0x100 #define GvINTRO(gv) (GvFLAGS(gv) & GVf_INTRO) #define GvINTRO_on(gv) (GvFLAGS(gv) |= GVf_INTRO) @@ -182,11 +211,14 @@ Return the SV from the GV. #define GvIMPORTED_CV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_CV) #define GvIMPORTED_CV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_CV) -#define GvIN_PAD(gv) (GvFLAGS(gv) & GVf_IN_PAD) -#define GvIN_PAD_on(gv) (GvFLAGS(gv) |= GVf_IN_PAD) -#define GvIN_PAD_off(gv) (GvFLAGS(gv) &= ~GVf_IN_PAD) +#define GvONCE_FATAL(gv) (GvFLAGS(gv) & GVf_ONCE_FATAL) +#define GvONCE_FATAL_on(gv) (GvFLAGS(gv) |= GVf_ONCE_FATAL) +#define GvONCE_FATAL_off(gv) (GvFLAGS(gv) &= ~GVf_ONCE_FATAL) #ifndef PERL_CORE +# define GvIN_PAD(gv) 0 +# define GvIN_PAD_on(gv) NOOP +# define GvIN_PAD_off(gv) NOOP # define Nullgv Null(GV*) #endif @@ -203,32 +235,38 @@ Return the SV from the GV. * symbol creation flags, for use in gv_fetchpv() and get_*v() */ #define GV_ADD 0x01 /* add, if symbol not already there - For gv_name_set, adding a HEK for the first - time, so don't try to free what's there. */ + For gv_name_set, adding a HEK for the first + time, so don't try to free what's there. */ #define GV_ADDMULTI 0x02 /* add, pretending it has been added - already; used also by gv_init_* */ + already; used also by gv_init_* */ #define GV_ADDWARN 0x04 /* add, but warn if symbol wasn't already there */ -#define GV_ADDINEVAL 0x08 /* add, as though we're doing so within an eval */ + /* 0x08 UNUSED */ #define GV_NOINIT 0x10 /* add, but don't init symbol, if type != PVGV */ /* This is used by toke.c to avoid turing placeholder constants in the symbol table into full PVGVs with attached constant subroutines. */ #define GV_NOADD_NOINIT 0x20 /* Don't add the symbol if it's not there. - Don't init it if it is there but ! PVGV */ + Don't init it if it is there but ! PVGV */ #define GV_NOEXPAND 0x40 /* Don't expand SvOK() entries to PVGV */ #define GV_NOTQUAL 0x80 /* A plain symbol name, not qualified with a - package (so skip checks for :: and ') */ + package (so skip checks for :: and ') */ #define GV_AUTOLOAD 0x100 /* gv_fetchmethod_flags() should AUTOLOAD */ #define GV_CROAK 0x200 /* gv_fetchmethod_flags() should croak */ #define GV_ADDMG 0x400 /* add if magical */ #define GV_NO_SVGMAGIC 0x800 /* Skip get-magic on an SV argument; - used only by gv_fetchsv(_nomg) */ + used only by gv_fetchsv(_nomg) */ +#define GV_CACHE_ONLY 0x1000 /* return stash only if found in cache; + used only in flags parameter to gv_stash* family */ + +/* Flags for gv_fetchmeth_pvn and gv_autoload_pvn*/ +#define GV_SUPER 0x1000 /* SUPER::method */ +#define GV_NOUNIVERSAL 0x2000 /* Skip UNIVERSAL lookup */ /* Flags for gv_autoload_*/ #define GV_AUTOLOAD_ISMETHOD 1 /* autoloading a method? */ /* SVf_UTF8 (more accurately the return value from SvUTF8) is also valid - as a flag to various gv_* functions, so ensure it lies - outside this range. + as a flag to various gv_* functions, so ensure it lies + outside this range. */ #define GV_NOADD_MASK \ @@ -237,18 +275,46 @@ Return the SV from the GV. found (with the exception GV_ADDMG, which *might* cause the symbol to be added) */ +/* gv_fetchfile_flags() */ +#define GVF_NOADD 0x01 /* don't add the glob if it doesn't exist */ + #define gv_fullname3(sv,gv,prefix) gv_fullname4(sv,gv,prefix,TRUE) #define gv_efullname3(sv,gv,prefix) gv_efullname4(sv,gv,prefix,TRUE) #define gv_fetchmethod(stash, name) gv_fetchmethod_autoload(stash, name, TRUE) #define gv_fetchsv_nomg(n,f,t) gv_fetchsv(n,(f)|GV_NO_SVGMAGIC,t) #define gv_init(gv,stash,name,len,multi) \ - gv_init_pvn(gv,stash,name,len,GV_ADDMULTI*!!(multi)) + gv_init_pvn(gv,stash,name,len,GV_ADDMULTI*cBOOL(multi)) #define gv_fetchmeth(stash,name,len,level) gv_fetchmeth_pvn(stash, name, len, level, 0) #define gv_fetchmeth_autoload(stash,name,len,level) gv_fetchmeth_pvn_autoload(stash, name, len, level, 0) #define gv_fetchmethod_flags(stash,name,flags) gv_fetchmethod_pv_flags(stash, name, flags) -#define gv_autoload4(stash, name, len, method) \ - gv_autoload_pvn(stash, name, len, !!(method)) + +/* +=for apidoc gv_autoload4 +Equivalent to C>. + +=cut +*/ +#define gv_autoload4(stash, name, len, autoload) \ + gv_autoload_pvn(stash, name, len, cBOOL(autoload)) #define newGVgen(pack) newGVgen_flags(pack, 0) +#define gv_method_changed(gv) \ + ( \ + assert_(isGV_with_GP(gv)) \ + GvREFCNT(gv) > 1 \ + ? (void)++PL_sub_generation \ + : mro_method_changed_in(GvSTASH(gv)) \ + ) + +/* +=for apidoc gv_AVadd +=for apidoc_item gv_HVadd +=for apidoc_item gv_IOadd +=for apidoc_item gv_SVadd + +Make sure there is a slot of the given type (AV, HV, IO, SV) in the GV C. + +=cut +*/ #define gv_AVadd(gv) gv_add_by_type((gv), SVt_PVAV) #define gv_HVadd(gv) gv_add_by_type((gv), SVt_PVHV) @@ -256,11 +322,5 @@ Return the SV from the GV. #define gv_SVadd(gv) gv_add_by_type((gv), SVt_NULL) /* - * Local variables: - * c-indentation-style: bsd - * c-basic-offset: 4 - * indent-tabs-mode: t - * End: - * - * ex: set ts=8 sts=4 sw=4 noet: + * ex: set ts=8 sts=4 sw=4 et: */