1 /* mg.h 2 * 3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 4 * 2000, 2002, 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 #ifdef STRUCT_MGVTBL_DEFINITION 12 STRUCT_MGVTBL_DEFINITION; 13 #else 14 struct mgvtbl { 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); 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); 23 }; 24 #endif 25 26 struct magic { 27 MAGIC* mg_moremagic; 28 MGVTBL* mg_virtual; /* pointer to magic functions */ 29 U16 mg_private; 30 char mg_type; 31 U8 mg_flags; 32 SV* mg_obj; 33 char* mg_ptr; 34 I32 mg_len; 35 }; 36 37 #define MGf_TAINTEDDIR 1 /* PERL_MAGIC_envelem only */ 38 #define MGf_MINMATCH 1 /* PERL_MAGIC_regex_global only */ 39 #define MGf_REFCOUNTED 2 40 #define MGf_GSKIP 4 41 #define MGf_COPY 8 42 #define MGf_DUP 16 43 44 #define MgTAINTEDDIR(mg) (mg->mg_flags & MGf_TAINTEDDIR) 45 #define MgTAINTEDDIR_on(mg) (mg->mg_flags |= MGf_TAINTEDDIR) 46 #define MgTAINTEDDIR_off(mg) (mg->mg_flags &= ~MGf_TAINTEDDIR) 47 48 #define MgPV(mg,lp) ((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ? \ 49 SvPV((SV*)((mg)->mg_ptr),lp) : \ 50 (mg)->mg_ptr) 51 52 #define SvTIED_mg(sv,how) \ 53 (SvRMAGICAL(sv) ? mg_find((sv),(how)) : Null(MAGIC*)) 54 #define SvTIED_obj(sv,mg) \ 55 ((mg)->mg_obj ? (mg)->mg_obj : sv_2mortal(newRV(sv))) 56