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

/*    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;
    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)
#define SvTIED_obj(sv,mg) \
    ((mg)->mg_obj ? (mg)->mg_obj : sv_2mortal(newRV(sv)))
Commit	Line	Data
a0d0e21e	1	/* mg.h
79072805	2	*
4bb101f2	3	* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
54ca4ee7	4	* 2000, 2002, 2005, 2006, by Larry Wall and others
79072805	5	*
	6	* You may distribute under the terms of either the GNU General Public
	7	* License or the Artistic License, as specified in the README file.
	8	*
79072805	9	*/
79072805	10
0f4eea8f	11	#ifdef STRUCT_MGVTBL_DEFINITION
	12	STRUCT_MGVTBL_DEFINITION;
	13	#else
79072805	14	struct mgvtbl {
cea2e8a9	15	int (CPERLscope(svt_get)) (pTHX_ SV sv, MAGIC* mg);
	16	int (CPERLscope(svt_set)) (pTHX_ SV sv, MAGIC* mg);
	17	U32 (CPERLscope(svt_len)) (pTHX_ SV sv, MAGIC* mg);
	18	int (CPERLscope(svt_clear))(pTHX_ SV sv, MAGIC* mg);
	19	int (CPERLscope(svt_free)) (pTHX_ SV sv, MAGIC* mg);
68795e93	20	int (CPERLscope(svt_copy)) (pTHX_ SV sv, MAGIC* mg,
	21	SV nsv, const char name, int namlen);
	22	int (CPERLscope(svt_dup)) (pTHX_ MAGIC mg, CLONE_PARAMS *param);
a5063e7c	23	int (CPERLscope(svt_local))(pTHX_ SV nsv, MAGIC *mg);
79072805	24	};
0f4eea8f	25	#endif
79072805	26
	27	struct magic {
	28	MAGIC* mg_moremagic;
92e67595	29	MGVTBL* mg_virtual; /* pointer to magic functions */
79072805	30	U16 mg_private;
	31	char mg_type;
	32	U8 mg_flags;
	33	SV* mg_obj;
	34	char* mg_ptr;
565764a8	35	I32 mg_len;
79072805	36	};
8990e307	37
cb50f42d	38	#define MGf_TAINTEDDIR 1 /* PERL_MAGIC_envelem only */
cb50f42d	39	#define MGf_MINMATCH 1 /* PERL_MAGIC_regex_global only */
85e6fe83	40	#define MGf_REFCOUNTED 2
a0d0e21e	41	#define MGf_GSKIP 4
a5063e7c	42	#define MGf_COPY 8 /* has an svt_copy MGVTBL entry */
	43	#define MGf_DUP 0x10 /* has an svt_dup MGVTBL entry */
	44	#define MGf_LOCAL 0x20 /* has an svt_local MGVTBL entry */
748a9306	45
1e422769	46	#define MgTAINTEDDIR(mg) (mg->mg_flags & MGf_TAINTEDDIR)
	47	#define MgTAINTEDDIR_on(mg) (mg->mg_flags \|= MGf_TAINTEDDIR)
	48	#define MgTAINTEDDIR_off(mg) (mg->mg_flags &= ~MGf_TAINTEDDIR)
99069129	49
32da55ab	50	#define MgPV(mg,lp) ((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ? \
5aabfad6	51	SvPV((SV*)((mg)->mg_ptr),lp) : \
5aabfad6	52	(mg)->mg_ptr)
01b8bcb7	53	#define MgPV_const(mg,lp) ((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ? \
	54	SvPV_const((SV*)((mg)->mg_ptr),lp) : \
	55	(const char*)(mg)->mg_ptr)
	56	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
	57	SvPV_nolen_const((SV*)((mg)->mg_ptr)) : \
fa28a6c6	58	(const char*)(mg)->mg_ptr)
33c27489	59
4608196e	60	#define SvTIED_mg(sv,how) (SvRMAGICAL(sv) ? mg_find((sv),(how)) : NULL)
33c27489	61	#define SvTIED_obj(sv,mg) \
33c27489	62	((mg)->mg_obj ? (mg)->mg_obj : sv_2mortal(newRV(sv)))