lib/perl5/5.8.8/msys/CORE/gv.h

   1 /*    gv.h
   2  *
   3  *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   4  *    2000, 2001, 2002, 2003, 2004, 2005, 2006, 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 gp {
  12     SV *        gp_sv;          /* scalar value */
  13     U32         gp_refcnt;      /* how many globs point to this? */
  14     struct io * gp_io;          /* filehandle value */
  15     CV *        gp_form;        /* format value */
  16     AV *        gp_av;          /* array value */
  17     HV *        gp_hv;          /* hash value */
  18     GV *        gp_egv;         /* effective gv, if *glob */
  19     CV *        gp_cv;          /* subroutine value */
  20     U32         gp_cvgen;       /* generational validity of cached gv_cv */
  21     U32         gp_flags;       /* XXX unused */
  22     line_t      gp_line;        /* line first declared at (for -w) */
  23     char *      gp_file;        /* file first declared in (for -w) */
  24 };
  25
  26 #define GvXPVGV(gv)     ((XPVGV*)SvANY(gv))
  27
  28 #define GvGP(gv)        (GvXPVGV(gv)->xgv_gp)
  29 #define GvNAME(gv)      (GvXPVGV(gv)->xgv_name)
  30 #define GvNAMELEN(gv)   (GvXPVGV(gv)->xgv_namelen)
  31 #define GvSTASH(gv)     (GvXPVGV(gv)->xgv_stash)
  32 #define GvFLAGS(gv)     (GvXPVGV(gv)->xgv_flags)
  33
  34 /*
  35 =head1 GV Functions
  36
  37 =for apidoc Am|SV*|GvSV|GV* gv
  38
  39 Return the SV from the GV.
  40
  41 =cut
  42 */
  43
  44 #define GvSV(gv)        (GvGP(gv)->gp_sv)
  45 #ifdef PERL_DONT_CREATE_GVSV
  46 #define GvSVn(gv)       (*(GvGP(gv)->gp_sv ? \
  47                          &(GvGP(gv)->gp_sv) : \
  48                          &(GvGP(gv_SVadd(gv))->gp_sv)))
  49 #else
  50 #define GvSVn(gv)       GvSV(gv)
  51 #endif
  52
  53 #define GvREFCNT(gv)    (GvGP(gv)->gp_refcnt)
  54 #define GvIO(gv)        ((gv) && SvTYPE((SV*)gv) == SVt_PVGV && GvGP(gv) ? GvIOp(gv) : 0)
  55 #define GvIOp(gv)       (GvGP(gv)->gp_io)
  56 #define GvIOn(gv)       (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv)))
  57
  58 #define GvFORM(gv)      (GvGP(gv)->gp_form)
  59 #define GvAV(gv)        (GvGP(gv)->gp_av)
  60
  61 /* This macro is deprecated.  Do not use! */
  62 #define GvREFCNT_inc(gv) ((GV*)SvREFCNT_inc(gv))        /* DO NOT USE */
  63
  64 #define GvAVn(gv)       (GvGP(gv)->gp_av ? \
  65                          GvGP(gv)->gp_av : \
  66                          GvGP(gv_AVadd(gv))->gp_av)
  67 #define GvHV(gv)        ((GvGP(gv))->gp_hv)
  68
  69 #define GvHVn(gv)       (GvGP(gv)->gp_hv ? \
  70                          GvGP(gv)->gp_hv : \
  71                          GvGP(gv_HVadd(gv))->gp_hv)
  72
  73 #define GvCV(gv)        (GvGP(gv)->gp_cv)
  74 #define GvCVGEN(gv)     (GvGP(gv)->gp_cvgen)
  75 #define GvCVu(gv)       (GvGP(gv)->gp_cvgen ? Nullcv : GvGP(gv)->gp_cv)
  76
  77 #define GvGPFLAGS(gv)   (GvGP(gv)->gp_flags)
  78
  79 #define GvLINE(gv)      (GvGP(gv)->gp_line)
  80 #define GvFILE(gv)      (GvGP(gv)->gp_file)
  81 #define GvFILEGV(gv)    (gv_fetchfile(GvFILE(gv)))
  82
  83 #define GvEGV(gv)       (GvGP(gv)->gp_egv)
  84 #define GvENAME(gv)     GvNAME(GvEGV(gv) ? GvEGV(gv) : gv)
  85 #define GvESTASH(gv)    GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv)
  86
  87 #define GVf_INTRO       0x01
  88 #define GVf_MULTI       0x02
  89 #define GVf_ASSUMECV    0x04
  90 #define GVf_IN_PAD      0x08
  91 #define GVf_IMPORTED    0xF0
  92 #define GVf_IMPORTED_SV   0x10
  93 #define GVf_IMPORTED_AV   0x20
  94 #define GVf_IMPORTED_HV   0x40
  95 #define GVf_IMPORTED_CV   0x80
  96
  97 #define GvINTRO(gv)             (GvFLAGS(gv) & GVf_INTRO)
  98 #define GvINTRO_on(gv)          (GvFLAGS(gv) |= GVf_INTRO)
  99 #define GvINTRO_off(gv)         (GvFLAGS(gv) &= ~GVf_INTRO)
 100
 101 #define GvMULTI(gv)             (GvFLAGS(gv) & GVf_MULTI)
 102 #define GvMULTI_on(gv)          (GvFLAGS(gv) |= GVf_MULTI)
 103 #define GvMULTI_off(gv)         (GvFLAGS(gv) &= ~GVf_MULTI)
 104
 105 #define GvASSUMECV(gv)          (GvFLAGS(gv) & GVf_ASSUMECV)
 106 #define GvASSUMECV_on(gv)       (GvFLAGS(gv) |= GVf_ASSUMECV)
 107 #define GvASSUMECV_off(gv)      (GvFLAGS(gv) &= ~GVf_ASSUMECV)
 108
 109 #define GvIMPORTED(gv)          (GvFLAGS(gv) & GVf_IMPORTED)
 110 #define GvIMPORTED_on(gv)       (GvFLAGS(gv) |= GVf_IMPORTED)
 111 #define GvIMPORTED_off(gv)      (GvFLAGS(gv) &= ~GVf_IMPORTED)
 112
 113 #define GvIMPORTED_SV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_SV)
 114 #define GvIMPORTED_SV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_SV)
 115 #define GvIMPORTED_SV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_SV)
 116
 117 #define GvIMPORTED_AV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_AV)
 118 #define GvIMPORTED_AV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_AV)
 119 #define GvIMPORTED_AV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_AV)
 120
 121 #define GvIMPORTED_HV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_HV)
 122 #define GvIMPORTED_HV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_HV)
 123 #define GvIMPORTED_HV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_HV)
 124
 125 #define GvIMPORTED_CV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_CV)
 126 #define GvIMPORTED_CV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_CV)
 127 #define GvIMPORTED_CV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_CV)
 128
 129 #define GvIN_PAD(gv)            (GvFLAGS(gv) & GVf_IN_PAD)
 130 #define GvIN_PAD_on(gv)         (GvFLAGS(gv) |= GVf_IN_PAD)
 131 #define GvIN_PAD_off(gv)        (GvFLAGS(gv) &= ~GVf_IN_PAD)
 132
 133 /* XXX: all GvFLAGS options are used, borrowing GvGPFLAGS for the moment */
 134
 135 #define GVf_UNIQUE           0x0001
 136 #define GvUNIQUE(gv)         (GvGP(gv) && (GvGPFLAGS(gv) & GVf_UNIQUE))
 137 #define GvUNIQUE_on(gv)      (GvGPFLAGS(gv) |= GVf_UNIQUE)
 138 #define GvUNIQUE_off(gv)     (GvGPFLAGS(gv) &= ~GVf_UNIQUE)
 139
 140 #ifdef USE_ITHREADS
 141 #define GV_UNIQUE_CHECK
 142 #else
 143 #undef  GV_UNIQUE_CHECK
 144 #endif
 145
 146 #define Nullgv Null(GV*)
 147
 148 #define DM_UID   0x003
 149 #define DM_RUID   0x001
 150 #define DM_EUID   0x002
 151 #define DM_GID   0x030
 152 #define DM_RGID   0x010
 153 #define DM_EGID   0x020
 154 #define DM_DELAY 0x100
 155
 156 /*
 157  * symbol creation flags, for use in gv_fetchpv() and get_*v()
 158  */
 159 #define GV_ADD          0x01    /* add, if symbol not already there */
 160 #define GV_ADDMULTI     0x02    /* add, pretending it has been added already */
 161 #define GV_ADDWARN      0x04    /* add, but warn if symbol wasn't already there */
 162 #define GV_ADDINEVAL    0x08    /* add, as though we're doing so within an eval */
 163 #define GV_NOINIT       0x10    /* add, but don't init symbol, if type != PVGV */
 164
 165 #define gv_fullname3(sv,gv,prefix) gv_fullname4(sv,gv,prefix,TRUE)
 166 #define gv_efullname3(sv,gv,prefix) gv_efullname4(sv,gv,prefix,TRUE)