/* gv.h
*
- * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, 2005, 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.
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 */
+ CV * gp_cv; /* subroutine value */
+ 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 */
- CV * gp_cv; /* subroutine value */
- U32 gp_cvgen; /* generational validity of cached gv_cv */
- line_t gp_line; /* line first declared at (for -w) */
- char * gp_file; /* file first declared in (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))
-#ifdef DEBUGGING
-# define GvGP(gv) (*(assert(SvTYPE(gv) == SVt_PVGV || \
- SvTYPE(gv) == SVt_PVLV), \
- &(GvXPVGV(gv)->xgv_gp)))
+
+#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);})))
+# 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); \
+ &(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) (GvXPVGV(gv)->xgv_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)
+# 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) (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)
+#define GvNAME(gv) GvNAME_get(gv)
+#define GvNAMELEN(gv) GvNAMELEN_get(gv)
/*
-=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<L</GvSVn>> for that, or compile perl with S<C<-DPERL_CREATE_GVSV>>. See
+L<perl5100delta>.
+
+=for apidoc Am|SV*|GvSVn|GV* gv
+Like C<L</GvSV>>, 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
*/
#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)
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 ? Nullcv : GvGP(gv)->gp_cv)
+#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(gv) (GvGP(gv)->gp_file)
-#define GvFILEGV(gv) (gv_fetchfile(GvFILE(gv)))
+#define GvFILE_HEK(gv) (GvGP(gv)->gp_file_hek)
+#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)
#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)
+/* 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'.
+*/
#define GVf_INTRO 0x01
#define GVf_MULTI 0x02
#define GVf_ASSUMECV 0x04
-#define GVf_IN_PAD 0x08
+/* UNUSED 0x08 */
#define GVf_IMPORTED 0xF0
#define GVf_IMPORTED_SV 0x10
#define GVf_IMPORTED_AV 0x20
#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 GvUNIQUE(gv) 0
-#define GvUNIQUE_on(gv)
-#define GvUNIQUE_off(gv)
-
-#ifdef USE_ITHREADS
-#define GV_UNIQUE_CHECK
-#else
-#undef GV_UNIQUE_CHECK
+#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
-#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()
*/
-#define GV_ADD 0x01 /* add, if symbol not already there */
-#define GV_ADDMULTI 0x02 /* add, pretending it has been added already */
+#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 */
+ /* 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 */
#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) */
+#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 */
+
+/* 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 gv_fetch_pvn_flags, 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 \
+ (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, autoload) \
+ gv_autoload_pvn(stash, name, len, !!(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)) \
+ )
+
+#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)
+
+/*
+ * ex: set ts=8 sts=4 sw=4 et:
+ */
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