[p5sagit/p5-mst-13.2.git] / mg.h

/*    mg.h
 *
 *    Copyright (c) 1991-2001, Larry Wall
 *
 *    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);
};
#endif

struct magic {
    MAGIC*	mg_moremagic;
    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
#define MGf_REFCOUNTED 2
#define MGf_GSKIP      4

#define MGf_MINMATCH   1

#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 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)))
Commit	Line	Data
a0d0e21e	1	/* mg.h
79072805	2	*
bc89e66f	3	* Copyright (c) 1991-2001, Larry Wall
79072805	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	*
79072805	8	*/
79072805	9
0f4eea8f	10	#ifdef STRUCT_MGVTBL_DEFINITION
	11	STRUCT_MGVTBL_DEFINITION;
	12	#else
79072805	13	struct mgvtbl {
cea2e8a9	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);
79072805	19	};
0f4eea8f	20	#endif
79072805	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;
565764a8	30	I32 mg_len;
79072805	31	};
8990e307	32
8990e307	33	#define MGf_TAINTEDDIR 1
85e6fe83	34	#define MGf_REFCOUNTED 2
a0d0e21e	35	#define MGf_GSKIP 4
748a9306	36
	37	#define MGf_MINMATCH 1
	38
1e422769	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)
99069129	42
32da55ab	43	#define MgPV(mg,lp) ((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ? \
5aabfad6	44	SvPV((SV*)((mg)->mg_ptr),lp) : \
5aabfad6	45	(mg)->mg_ptr)
33c27489	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)))