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1 /* mg.h 2 * 3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 4 * 2000, 2002, 2005, 2006, 2007, 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 int (CPERLscope(*svt_local))(pTHX_ SV *nsv, MAGIC *mg); 24 }; 25 #endif 26 27 struct magic { 28 MAGIC* mg_moremagic; 29 MGVTBL* mg_virtual; /* pointer to magic functions */ 30 U16 mg_private; 31 char mg_type; 32 U8 mg_flags; 33 I32 mg_len; 34 SV* mg_obj; 35 char* mg_ptr; 36 }; 37 38 #define MGf_TAINTEDDIR 1 /* PERL_MAGIC_envelem only */ 39 #define MGf_MINMATCH 1 /* PERL_MAGIC_regex_global only */ 40 #define MGf_REFCOUNTED 2 41 #define MGf_GSKIP 4 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 */ 45 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) 49 50 #define MgPV(mg,lp) ((((int)(lp = (mg)->mg_len)) == HEf_SVKEY) ? \ 51 SvPV((SV*)((mg)->mg_ptr),lp) : \ 52 (mg)->mg_ptr) 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)) : \ 58 (const char*)(mg)->mg_ptr) 59 60 #define SvTIED_mg(sv,how) (SvRMAGICAL(sv) ? mg_find((sv),(how)) : NULL) 61 #define SvTIED_obj(sv,mg) \ 62 ((mg)->mg_obj ? (mg)->mg_obj : sv_2mortal(newRV(sv)))
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