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Member "install-tl-20200916/tlpkg/tlperl/lib/CORE/mg.h" (5 Apr 2016, 3013 Bytes) of package /windows/misc/install-tl.zip:


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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, 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  */