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Commit	Line	Data
	1	/* mg.h
	2	*
	3	* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
	4	* 2000, 2002, 2005, 2006, 2007, 2008 by Larry Wall and others
	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	*
	9	*/
	10
	11	struct mgvtbl {
	12	int (svt_get) (pTHX_ SV sv, MAGIC* mg);
	13	int (svt_set) (pTHX_ SV sv, MAGIC* mg);
	14	U32 (svt_len) (pTHX_ SV sv, MAGIC* mg);
	15	int (svt_clear)(pTHX_ SV sv, MAGIC* mg);
	16	int (svt_free) (pTHX_ SV sv, MAGIC* mg);
	17	int (svt_copy) (pTHX_ SV sv, MAGIC* mg,
	18	SV nsv, const char name, I32 namlen);
	19	int (svt_dup) (pTHX_ MAGIC mg, CLONE_PARAMS *param);
	20	int (svt_local)(pTHX_ SV nsv, MAGIC *mg);
	21	};
	22
	23	struct magic {
	24	MAGIC* mg_moremagic;
	25	MGVTBL* mg_virtual; /* pointer to magic functions */
	26	U16 mg_private;
	27	char mg_type;
	28	U8 mg_flags;
	29	SSize_t mg_len;
	30	SV* mg_obj;
	31	char* mg_ptr;
	32	};
	33
	34	#define MGf_TAINTEDDIR 1 /* PERL_MAGIC_envelem only */
	35	#define MGf_MINMATCH 1 /* PERL_MAGIC_regex_global only */
	36	#define MGf_REQUIRE_GV 1 /* PERL_MAGIC_checkcall only */
	37	#define MGf_REFCOUNTED 2
	38	#define MGf_GSKIP 4 /* skip further GETs until after next SET */
	39	#define MGf_COPY 8 /* has an svt_copy MGVTBL entry */
	40	#define MGf_DUP 0x10 /* has an svt_dup MGVTBL entry */
	41	#define MGf_LOCAL 0x20 /* has an svt_local MGVTBL entry */
	42	#define MGf_BYTES 0x40 /* PERL_MAGIC_regex_global only */
	43	#define MGf_PERSIST 0x80 /* PERL_MAGIC_lvref only */
	44
	45	#define MgTAINTEDDIR(mg) (mg->mg_flags & MGf_TAINTEDDIR)
	46	#define MgTAINTEDDIR_on(mg) (mg->mg_flags \|= MGf_TAINTEDDIR)
	47	#define MgTAINTEDDIR_off(mg) (mg->mg_flags &= ~MGf_TAINTEDDIR)
	48
	49	#define MgPV(mg,lp) ((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ? \
	50	SvPV(MUTABLE_SV((mg)->mg_ptr),lp) : \
	51	(mg)->mg_ptr)
	52	#define MgPV_const(mg,lp) ((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ? \
	53	SvPV_const(MUTABLE_SV((mg)->mg_ptr),lp) : \
	54	(const char*)(mg)->mg_ptr)
	55	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
	56	SvPV_nolen_const(MUTABLE_SV((mg)->mg_ptr)) : \
	57	(const char*)(mg)->mg_ptr)
	58
	59	#define SvTIED_mg(sv,how) (SvRMAGICAL(sv) ? mg_find((sv),(how)) : NULL)
	60	#define SvTIED_obj(sv,mg) \
	61	((mg)->mg_obj ? (mg)->mg_obj : sv_2mortal(newRV(sv)))
	62
	63	#if defined(PERL_CORE) \|\| defined(PERL_EXT)
	64	# define MgBYTEPOS(mg,sv,pv,len) S_MgBYTEPOS(aTHX_ mg,sv,pv,len)
	65	/* assumes get-magic and stringification have already occurred */
	66	# define MgBYTEPOS_set(mg,sv,pv,off) ( \
	67	assert_((mg)->mg_type == PERL_MAGIC_regex_global) \
	68	SvPOK(sv) && (!SvGMAGICAL(sv) \|\| sv_only_taint_gmagic(sv)) \
	69	? (mg)->mg_len = (off), (mg)->mg_flags \|= MGf_BYTES \
	70	: ((mg)->mg_len = DO_UTF8(sv) \
	71	? (SSize_t)utf8_length((U8 )(pv), (U8 )(pv)+(off)) \
	72	: (SSize_t)(off), \
	73	(mg)->mg_flags &= ~MGf_BYTES))
	74	#endif
	75
	76	#define whichsig(pv) whichsig_pv(pv)
	77
	78	/*
	79	* ex: set ts=8 sts=4 sw=4 et:
	80	*/