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