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/* mg.h
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
* 2000, 2002, 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.
*
*/
#ifdef STRUCT_MGVTBL_DEFINITION
STRUCT_MGVTBL_DEFINITION;
#else
struct 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);
};
#endif
struct magic {
MAGIC* mg_moremagic;
const MGVTBL* mg_virtual; /* pointer to magic functions */
U16 mg_private;
char mg_type;
U8 mg_flags;
SV* mg_obj;
char* mg_ptr;
I32 mg_len;
};
#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(MAGIC*))
#define SvTIED_obj(sv,mg) \
((mg)->mg_obj ? (mg)->mg_obj : sv_2mortal(newRV(sv)))
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