X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/743e66e61aecff1c9998bd0ff719a1d679b03e9f..f4890806d306bfeee79f1864c882eb307b4f54fd:/gv.h diff --git a/gv.h b/gv.h index fde836d..25961ef 100644 --- a/gv.h +++ b/gv.h @@ -1,6 +1,7 @@ /* gv.h * - * Copyright (c) 1991-1999, Larry Wall + * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, + * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 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. @@ -17,26 +18,76 @@ struct gp { GV * gp_egv; /* effective gv, if *glob */ CV * gp_cv; /* subroutine value */ U32 gp_cvgen; /* generational validity of cached gv_cv */ - U32 gp_flags; /* XXX unused */ line_t gp_line; /* line first declared at (for -w) */ - char * gp_file; /* file first declared in (for -w) */ + HEK * gp_file_hek; /* file first declared in (for -w) */ }; -#if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286)) -#define MICROPORT +#define GvXPVGV(gv) ((XPVGV*)SvANY(gv)) + + +#if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) +# define GvGP(gv) \ + (*({GV *const shplep = (GV *) (gv); \ + assert(SvTYPE(shplep) == SVt_PVGV || SvTYPE(shplep) == SVt_PVLV); \ + assert(isGV_with_GP(shplep)); \ + &((shplep)->sv_u.svu_gp);})) +# define GvFLAGS(gv) \ + (*({GV *const yaah = (GV *) (gv); \ + assert(SvTYPE(yaah) == SVt_PVGV || SvTYPE(yaah) == SVt_PVLV); \ + assert(isGV_with_GP(yaah)); \ + &(GvXPVGV(yaah)->xpv_cur);})) +# define GvSTASH(gv) \ + (*({ GV * const _gv = (GV *) (gv); \ + assert(isGV_with_GP(_gv)); \ + assert(SvTYPE(_gv) == SVt_PVGV || SvTYPE(_gv) >= SVt_PVLV); \ + &(GvXPVGV(_gv)->xnv_u.xgv_stash); \ + })) +# define GvNAME_HEK(gv) \ + (*({ GV * const zzzz = (GV *) (gv); \ + assert(isGV_with_GP(zzzz)); \ + assert(SvTYPE(zzzz) == SVt_PVGV || SvTYPE(zzzz) >= SVt_PVLV); \ + &(GvXPVGV(zzzz)->xiv_u.xivu_namehek); \ + })) +# define GvNAME_get(gv) ({ assert(GvNAME_HEK(gv)); HEK_KEY(GvNAME_HEK(gv)); }) +# define GvNAMELEN_get(gv) ({ assert(GvNAME_HEK(gv)); HEK_LEN(GvNAME_HEK(gv)); }) +#else +# define GvGP(gv) ((gv)->sv_u.svu_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)) #endif -#define GvXPVGV(gv) ((XPVGV*)SvANY(gv)) +#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 -#define GvGP(gv) (GvXPVGV(gv)->xgv_gp) -#define GvNAME(gv) (GvXPVGV(gv)->xgv_name) -#define GvNAMELEN(gv) (GvXPVGV(gv)->xgv_namelen) -#define GvSTASH(gv) (GvXPVGV(gv)->xgv_stash) -#define GvFLAGS(gv) (GvXPVGV(gv)->xgv_flags) +/* +=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((SV*)gv) == SVt_PVGV ? GvIOp(gv) : 0) +#define GvIO(gv) ((gv) && SvTYPE((SV*)gv) == SVt_PVGV && GvGP(gv) ? GvIOp(gv) : 0) #define GvIOp(gv) (GvGP(gv)->gp_io) #define GvIOn(gv) (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv))) @@ -46,32 +97,23 @@ struct gp { /* This macro is deprecated. Do not use! */ #define GvREFCNT_inc(gv) ((GV*)SvREFCNT_inc(gv)) /* DO NOT USE */ -#ifdef MICROPORT /* Microport 2.4 hack */ -AV *GvAVn(); -#else #define GvAVn(gv) (GvGP(gv)->gp_av ? \ GvGP(gv)->gp_av : \ GvGP(gv_AVadd(gv))->gp_av) -#endif #define GvHV(gv) ((GvGP(gv))->gp_hv) -#ifdef MICROPORT /* Microport 2.4 hack */ -HV *GvHVn(); -#else #define GvHVn(gv) (GvGP(gv)->gp_hv ? \ GvGP(gv)->gp_hv : \ GvGP(gv_HVadd(gv))->gp_hv) -#endif /* Microport 2.4 hack */ #define GvCV(gv) (GvGP(gv)->gp_cv) #define GvCVGEN(gv) (GvGP(gv)->gp_cvgen) -#define GvCVu(gv) (GvGP(gv)->gp_cvgen ? Nullcv : GvGP(gv)->gp_cv) - -#define GvGPFLAGS(gv) (GvGP(gv)->gp_flags) +#define GvCVu(gv) (GvGP(gv)->gp_cvgen ? NULL : GvGP(gv)->gp_cv) #define GvLINE(gv) (GvGP(gv)->gp_line) -#define GvFILE(gv) (GvGP(gv)->gp_file) -#define GvFILEGV(gv) (gv_fetchfile(GvGP(gv)->gp_file)) +#define GvFILE_HEK(gv) (GvGP(gv)->gp_file_hek) +#define GvFILE(gv) HEK_KEY(GvFILE_HEK(gv)) +#define GvFILEGV(gv) (gv_fetchfile(GvFILE(gv))) #define GvEGV(gv) (GvGP(gv)->gp_egv) #define GvENAME(gv) GvNAME(GvEGV(gv) ? GvEGV(gv) : gv) @@ -123,6 +165,16 @@ HV *GvHVn(); #define GvIN_PAD_on(gv) (GvFLAGS(gv) |= GVf_IN_PAD) #define GvIN_PAD_off(gv) (GvFLAGS(gv) &= ~GVf_IN_PAD) +#define GvUNIQUE(gv) 0 +#define GvUNIQUE_on(gv) NOOP +#define GvUNIQUE_off(gv) NOOP + +#ifdef USE_ITHREADS +#define GV_UNIQUE_CHECK +#else +#undef GV_UNIQUE_CHECK +#endif + #define Nullgv Null(GV*) #define DM_UID 0x003 @@ -136,9 +188,34 @@ HV *GvHVn(); /* * symbol creation flags, for use in gv_fetchpv() and get_*v() */ -#define GV_ADD 0x01 /* add, if symbol not already there */ +#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 */ #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 */ -#define GV_ADDOUR 0x20 /* add "our" variable */ +/* 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 ') */ + +/* SVf_UTF8 (more accurately the return value from SvUTF8) is also valid + as a flag to gv_fetch_pvn_flags, so ensure it lies outside this range. +*/ +#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) + +/* + * Local variables: + * c-indentation-style: bsd + * c-basic-offset: 4 + * indent-tabs-mode: t + * End: + * + * ex: set ts=8 sts=4 sw=4 noet: + */