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Commit	Line	Data
	1	/* mg.h
	2	*
	3	* Copyright (c) 1991-2001, Larry Wall
	4	*
	5	* You may distribute under the terms of either the GNU General Public
	6	* License or the Artistic License, as specified in the README file.
	7	*
	8	*/
	9
	10	#ifdef STRUCT_MGVTBL_DEFINITION
	11	STRUCT_MGVTBL_DEFINITION;
	12	#else
	13	struct mgvtbl {
	14	int (CPERLscope(svt_get)) (pTHX_ SV sv, MAGIC* mg);
	15	int (CPERLscope(svt_set)) (pTHX_ SV sv, MAGIC* mg);
	16	U32 (CPERLscope(svt_len)) (pTHX_ SV sv, MAGIC* mg);
	17	int (CPERLscope(svt_clear))(pTHX_ SV sv, MAGIC* mg);
	18	int (CPERLscope(svt_free)) (pTHX_ SV sv, MAGIC* mg);
	19	};
	20	#endif
	21
	22	struct magic {
	23	MAGIC* mg_moremagic;
	24	MGVTBL* mg_virtual; /* pointer to magic functions */
	25	U16 mg_private;
	26	char mg_type;
	27	U8 mg_flags;
	28	SV* mg_obj;
	29	char* mg_ptr;
	30	I32 mg_len;
	31	};
	32
	33	#define MGf_TAINTEDDIR 1
	34	#define MGf_REFCOUNTED 2
	35	#define MGf_GSKIP 4
	36
	37	#define MGf_MINMATCH 1
	38
	39	#define MgTAINTEDDIR(mg) (mg->mg_flags & MGf_TAINTEDDIR)
	40	#define MgTAINTEDDIR_on(mg) (mg->mg_flags \|= MGf_TAINTEDDIR)
	41	#define MgTAINTEDDIR_off(mg) (mg->mg_flags &= ~MGf_TAINTEDDIR)
	42
	43	#define MgPV(mg,lp) ((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ? \
	44	SvPV((SV*)((mg)->mg_ptr),lp) : \
	45	(mg)->mg_ptr)
	46
	47	#define SvTIED_mg(sv,how) \
	48	(SvRMAGICAL(sv) ? mg_find((sv),(how)) : Null(MAGIC*))
	49	#define SvTIED_obj(sv,mg) \
	50	((mg)->mg_obj ? (mg)->mg_obj : sv_2mortal(newRV(sv)))