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gv.h
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/* gv.h * * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. * */ 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_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) */ 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) # 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);}))) # 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); } # 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);})) # 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); \ })) # 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); \ })) # 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)); }) #else # define GvGP(gv) (0+(gv)->sv_u.svu_gp) # define GvGP_set(gv,gp) ((gv)->sv_u.svu_gp = (gp)) # define GvFLAGS(gv) (GvXPVGV(gv)->xpv_cur) # define GvSTASH(gv) (GvXPVGV(gv)->xnv_u.xgv_stash) # define GvNAME_HEK(gv) (GvXPVGV(gv)->xiv_u.xivu_namehek) # define GvNAME_get(gv) HEK_KEY(GvNAME_HEK(gv)) # define GvNAMELEN_get(gv) HEK_LEN(GvNAME_HEK(gv)) # define GvNAMEUTF8(gv) HEK_UTF8(GvNAME_HEK(gv)) #endif #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. =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))) #else #define GvSVn(gv) GvSV(gv) #endif #define GvREFCNT(gv) (GvGP(gv)->gp_refcnt) #define GvIO(gv) \ ( \ (gv) \ && ( \ SvTYPE((const SV*)(gv)) == SVt_PVGV \ || SvTYPE((const SV*)(gv)) == SVt_PVLV \ ) \ && GvGP(gv) \ ? GvIOp(gv) \ : NULL \ ) #define GvIOp(gv) (GvGP(gv)->gp_io) #define GvIOn(gv) (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv))) #define GvFORM(gv) (GvGP(gv)->gp_form) #define GvAV(gv) (GvGP(gv)->gp_av) #define GvAVn(gv) (GvGP(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) #define GvCV(gv) (0+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 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 GvEGV(gv) (GvGP(gv)->gp_egv) #define GvEGVx(gv) (isGV_with_GP(gv) ? GvEGV(gv) : NULL) #define GvENAME(gv) GvNAME(GvEGV(gv) ? GvEGV(gv) : gv) #define GvENAMELEN(gv) GvNAMELEN(GvEGV(gv) ? GvEGV(gv) : gv) #define GvENAMEUTF8(gv) GvNAMEUTF8(GvEGV(gv) ? GvEGV(gv) : gv) #define GvENAME_HEK(gv) GvNAME_HEK(GvEGV(gv) ? GvEGV(gv) : gv) #define GvESTASH(gv) GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv) #define GVf_INTRO 0x01 #define GVf_MULTI 0x02 #define GVf_ASSUMECV 0x04 #define GVf_IN_PAD 0x08 #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 GvINTRO(gv) (GvFLAGS(gv) & GVf_INTRO) #define GvINTRO_on(gv) (GvFLAGS(gv) |= GVf_INTRO) #define GvINTRO_off(gv) (GvFLAGS(gv) &= ~GVf_INTRO) #define GvMULTI(gv) (GvFLAGS(gv) & GVf_MULTI) #define GvMULTI_on(gv) (GvFLAGS(gv) |= GVf_MULTI) #define GvMULTI_off(gv) (GvFLAGS(gv) &= ~GVf_MULTI) #define GvASSUMECV(gv) (GvFLAGS(gv) & GVf_ASSUMECV) #define GvASSUMECV_on(gv) (GvFLAGS(gv) |= GVf_ASSUMECV) #define GvASSUMECV_off(gv) (GvFLAGS(gv) &= ~GVf_ASSUMECV) #define GvIMPORTED(gv) (GvFLAGS(gv) & GVf_IMPORTED) #define GvIMPORTED_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED) #define GvIMPORTED_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED) #define GvIMPORTED_SV(gv) (GvFLAGS(gv) & GVf_IMPORTED_SV) #define GvIMPORTED_SV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_SV) #define GvIMPORTED_SV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_SV) #define GvIMPORTED_AV(gv) (GvFLAGS(gv) & GVf_IMPORTED_AV) #define GvIMPORTED_AV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_AV) #define GvIMPORTED_AV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_AV) #define GvIMPORTED_HV(gv) (GvFLAGS(gv) & GVf_IMPORTED_HV) #define GvIMPORTED_HV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_HV) #define GvIMPORTED_HV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_HV) #define GvIMPORTED_CV(gv) (GvFLAGS(gv) & GVf_IMPORTED_CV) #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) #ifndef PERL_CORE # define Nullgv Null(GV*) #endif #define DM_RUID 0x001 #define DM_EUID 0x002 #define DM_UID (DM_RUID|DM_EUID) #define DM_ARRAY_ISA 0x004 #define DM_RGID 0x010 #define DM_EGID 0x020 #define DM_GID (DM_RGID|DM_EGID) #define DM_DELAY 0x100 /* * 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. */ #define GV_ADDMULTI 0x02 /* add, pretending it has been added 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 */ #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 */ #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 ') */ #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) */ /* 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. */ #define GV_NOADD_MASK \ (SVf_UTF8|GV_NOADD_NOINIT|GV_NOEXPAND|GV_NOTQUAL|GV_ADDMG|GV_NO_SVGMAGIC) /* The bit flags that don't cause gv_fetchpv() to add a symbol if not found (with the exception GV_ADDMG, which *might* cause the symbol to be added) */ #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)) #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)) #define newGVgen(pack) newGVgen_flags(pack, 0) #define gv_AVadd(gv) gv_add_by_type((gv), SVt_PVAV) #define gv_HVadd(gv) gv_add_by_type((gv), SVt_PVHV) #define gv_IOadd(gv) gv_add_by_type((gv), SVt_PVIO) #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: */
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