X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/e51a6fb1d1bcc2e57ebd9a4f62d455d38645f6b8..75006f0f4402bbabe02553499aa6e8b7687138fc:/gv.h diff --git a/gv.h b/gv.h index 6ef8ee6..6ef1c2b 100644 --- a/gv.h +++ b/gv.h @@ -1,7 +1,7 @@ /* gv.h * - * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others + * 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. @@ -10,14 +10,14 @@ 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 */ + 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) */ }; @@ -27,31 +27,38 @@ struct gp { #if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__INTEL_COMPILER) # 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);})) + (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 yaah = (GV *) (gv); \ - assert(SvTYPE(yaah) == SVt_PVGV || SvTYPE(yaah) == SVt_PVLV); \ - assert(isGV_with_GP(yaah)); \ - &(GvXPVGV(yaah)->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 _gv = (GV *) (gv); \ - assert(isGV_with_GP(_gv)); \ - assert(SvTYPE(_gv) == SVt_PVGV || SvTYPE(_gv) >= SVt_PVLV); \ - &(GvXPVGV(_gv)->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 zzzz = (GV *) (gv); \ - assert(isGV_with_GP(zzzz)); \ - assert(SvTYPE(zzzz) == SVt_PVGV || SvTYPE(zzzz) >= SVt_PVLV); \ - &(GvXPVGV(zzzz)->xiv_u.xivu_namehek); \ + (*({ 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)); HEK_KEY(GvNAME_HEK(gv)); }) +# 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 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) @@ -87,16 +94,23 @@ Return the SV from the GV. #endif #define GvREFCNT(gv) (GvGP(gv)->gp_refcnt) -#define GvIO(gv) ((gv) && SvTYPE((SV*)gv) == SVt_PVGV && GvGP(gv) ? GvIOp(gv) : 0) +#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) -/* This macro is deprecated. Do not use! */ -#define GvREFCNT_inc(gv) ((GV*)SvREFCNT_inc(gv)) /* DO NOT USE */ - #define GvAVn(gv) (GvGP(gv)->gp_av ? \ GvGP(gv)->gp_av : \ GvGP(gv_AVadd(gv))->gp_av) @@ -106,16 +120,18 @@ Return the SV from the GV. GvGP(gv)->gp_hv : \ GvGP(gv_HVadd(gv))->gp_hv) -#define GvCV(gv) (GvGP(gv)->gp_cv) +#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) HEK_KEY(GvFILE_HEK(gv)) +#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) @@ -165,25 +181,18 @@ Return the SV from the GV. #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 +#ifndef PERL_CORE +# define Nullgv Null(GV*) #endif -#define Nullgv Null(GV*) - -#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() @@ -202,13 +211,31 @@ Return the SV from the GV. #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) */ /* 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|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_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: