| 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 | */ |