X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/c529f79d594c53d3968d464c57ac24a21137dd09..613a9ec2cfb133a94ef11f3e50bdfef024885d96:/gv.h diff --git a/gv.h b/gv.h index fc9985a..54722b7 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, 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. @@ -9,76 +10,118 @@ struct gp { SV * gp_sv; /* scalar value */ - U32 gp_refcnt; /* how many globs point to this? */ struct io * gp_io; /* filehandle value */ - CV * gp_form; /* format value */ - AV * gp_av; /* array value */ - HV * gp_hv; /* hash value */ - GV * gp_egv; /* effective gv, if *glob */ CV * gp_cv; /* subroutine value */ U32 gp_cvgen; /* generational validity of cached gv_cv */ - I32 gp_lastexpr; /* used by nothing_in_common() */ + 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) */ - GV * gp_filegv; /* 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) && !defined(__INTEL_COMPILER) +# define GvGP(gv) \ + (*({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 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)); }) +#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 + +/* +=head1 GV Functions + +=for apidoc Am|SV*|GvSV|GV* gv + +Return the SV from the GV. -#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) +=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((const SV*)gv) == SVt_PVGV && 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) -/* 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 GvLASTEXPR(gv) (GvGP(gv)->gp_lastexpr) +#define GvCVu(gv) (GvGP(gv)->gp_cvgen ? NULL : GvGP(gv)->gp_cv) #define GvLINE(gv) (GvGP(gv)->gp_line) -#define GvFILEGV(gv) (GvGP(gv)->gp_filegv) +#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 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 @@ -117,22 +160,65 @@ HV *GvHVn(); #define GvIMPORTED_CV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_CV) #define GvIMPORTED_CV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_CV) -#define Nullgv Null(GV*) +#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_UID 0x003 -#define DM_RUID 0x001 -#define DM_EUID 0x002 -#define DM_GID 0x030 -#define DM_RGID 0x010 -#define DM_EGID 0x020 -#define DM_DELAY 0x100 +#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 */ +#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 ') */ +#define GV_AUTOLOAD 0x100 /* gv_fetchmethod_flags() should AUTOLOAD */ +#define GV_CROAK 0x200 /* gv_fetchmethod_flags() should croak */ + +/* 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_NOADD_MASK (SVf_UTF8|GV_NOADD_NOINIT|GV_NOEXPAND|GV_NOTQUAL) +/* The bit flags that don't cause gv_fetchpv() to add a symbol if not found */ + +#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_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: + */