/*    mg.h * *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, *    2000, 2002, 2005, 2006, 2007, 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. * */#ifdef STRUCT_MGVTBL_DEFINITIONSTRUCT_MGVTBL_DEFINITION;#elsestruct mgvtbl {    int		(CPERLscope(*svt_get))	(pTHX_ SV *sv, MAGIC* mg);    int		(CPERLscope(*svt_set))	(pTHX_ SV *sv, MAGIC* mg);    U32		(CPERLscope(*svt_len))	(pTHX_ SV *sv, MAGIC* mg);    int		(CPERLscope(*svt_clear))(pTHX_ SV *sv, MAGIC* mg);    int		(CPERLscope(*svt_free))	(pTHX_ SV *sv, MAGIC* mg);    int		(CPERLscope(*svt_copy))	(pTHX_ SV *sv, MAGIC* mg,    					SV *nsv, const char *name, int namlen);    int		(CPERLscope(*svt_dup))	(pTHX_ MAGIC *mg, CLONE_PARAMS *param);    int		(CPERLscope(*svt_local))(pTHX_ SV *nsv, MAGIC *mg);};#endifstruct magic {    MAGIC*	mg_moremagic;    MGVTBL*	mg_virtual;	/* pointer to magic functions */    U16		mg_private;    char	mg_type;    U8		mg_flags;    I32		mg_len;    SV*		mg_obj;    char*	mg_ptr;};#define MGf_TAINTEDDIR 1        /* PERL_MAGIC_envelem only */#define MGf_MINMATCH   1        /* PERL_MAGIC_regex_global only */#define MGf_REFCOUNTED 2#define MGf_GSKIP      4#define MGf_COPY       8	/* has an svt_copy  MGVTBL entry */#define MGf_DUP     0x10 	/* has an svt_dup   MGVTBL entry */#define MGf_LOCAL   0x20	/* has an svt_local MGVTBL entry */#define MgTAINTEDDIR(mg)	(mg->mg_flags & MGf_TAINTEDDIR)#define MgTAINTEDDIR_on(mg)	(mg->mg_flags |= MGf_TAINTEDDIR)#define MgTAINTEDDIR_off(mg)	(mg->mg_flags &= ~MGf_TAINTEDDIR)#define MgPV(mg,lp)		((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ?   \				 SvPV((SV*)((mg)->mg_ptr),lp) :		\				 (mg)->mg_ptr)#define MgPV_const(mg,lp)	((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ? \				 SvPV_const((SV*)((mg)->mg_ptr),lp) :        \				 (const char*)(mg)->mg_ptr)#define MgPV_nolen_const(mg)	(((((int)(mg)->mg_len)) == HEf_SVKEY) ?   \				 SvPV_nolen_const((SV*)((mg)->mg_ptr)) :  \				 (const char*)(mg)->mg_ptr)#define SvTIED_mg(sv,how) (SvRMAGICAL(sv) ? mg_find((sv),(how)) : NULL)#define SvTIED_obj(sv,mg) \    ((mg)->mg_obj ? (mg)->mg_obj : sv_2mortal(newRV(sv)))