lib/perl5/5.6.1/msys/CORE/gv.h

   1 /*    gv.h
   2  *
   3  *    Copyright (c) 1991-2001, Larry Wall
   4  *
   5  *    You may distribute under the terms of either the GNU General Public
   6  *    License or the Artistic License, as specified in the README file.
   7  *
   8  */
   9
  10 struct gp {
  11     SV *        gp_sv;          /* scalar value */
  12     U32         gp_refcnt;      /* how many globs point to this? */
  13     struct io * gp_io;          /* filehandle value */
  14     CV *        gp_form;        /* format value */
  15     AV *        gp_av;          /* array value */
  16     HV *        gp_hv;          /* hash value */
  17     GV *        gp_egv;         /* effective gv, if *glob */
  18     CV *        gp_cv;          /* subroutine value */
  19     U32         gp_cvgen;       /* generational validity of cached gv_cv */
  20     U32         gp_flags;       /* XXX unused */
  21     line_t      gp_line;        /* line first declared at (for -w) */
  22     char *      gp_file;        /* file first declared in (for -w) */
  23 };
  24
  25 #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
  26 #define MICROPORT
  27 #endif
  28
  29 #define GvXPVGV(gv)     ((XPVGV*)SvANY(gv))
  30
  31 #define GvGP(gv)        (GvXPVGV(gv)->xgv_gp)
  32 #define GvNAME(gv)      (GvXPVGV(gv)->xgv_name)
  33 #define GvNAMELEN(gv)   (GvXPVGV(gv)->xgv_namelen)
  34 #define GvSTASH(gv)     (GvXPVGV(gv)->xgv_stash)
  35 #define GvFLAGS(gv)     (GvXPVGV(gv)->xgv_flags)
  36
  37 /*
  38 =for apidoc Am|SV*|GvSV|GV* gv
  39
  40 Return the SV from the GV.
  41
  42 =cut
  43 */
  44
  45 #define GvSV(gv)        (GvGP(gv)->gp_sv)
  46 #define GvREFCNT(gv)    (GvGP(gv)->gp_refcnt)
  47 #define GvIO(gv)        ((gv) && SvTYPE((SV*)gv) == SVt_PVGV ? GvIOp(gv) : 0)
  48 #define GvIOp(gv)       (GvGP(gv)->gp_io)
  49 #define GvIOn(gv)       (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv)))
  50
  51 #define GvFORM(gv)      (GvGP(gv)->gp_form)
  52 #define GvAV(gv)        (GvGP(gv)->gp_av)
  53
  54 /* This macro is deprecated.  Do not use! */
  55 #define GvREFCNT_inc(gv) ((GV*)SvREFCNT_inc(gv))        /* DO NOT USE */
  56
  57 #ifdef  MICROPORT       /* Microport 2.4 hack */
  58 AV *GvAVn();
  59 #else
  60 #define GvAVn(gv)       (GvGP(gv)->gp_av ? \
  61                          GvGP(gv)->gp_av : \
  62                          GvGP(gv_AVadd(gv))->gp_av)
  63 #endif
  64 #define GvHV(gv)        ((GvGP(gv))->gp_hv)
  65
  66 #ifdef  MICROPORT       /* Microport 2.4 hack */
  67 HV *GvHVn();
  68 #else
  69 #define GvHVn(gv)       (GvGP(gv)->gp_hv ? \
  70                          GvGP(gv)->gp_hv : \
  71                          GvGP(gv_HVadd(gv))->gp_hv)
  72 #endif                  /* Microport 2.4 hack */
  73
  74 #define GvCV(gv)        (GvGP(gv)->gp_cv)
  75 #define GvCVGEN(gv)     (GvGP(gv)->gp_cvgen)
  76 #define GvCVu(gv)       (GvGP(gv)->gp_cvgen ? Nullcv : GvGP(gv)->gp_cv)
  77
  78 #define GvGPFLAGS(gv)   (GvGP(gv)->gp_flags)
  79
  80 #define GvLINE(gv)      (GvGP(gv)->gp_line)
  81 #define GvFILE(gv)      (GvGP(gv)->gp_file)
  82 #define GvFILEGV(gv)    (gv_fetchfile(GvFILE(gv)))
  83
  84 #define GvEGV(gv)       (GvGP(gv)->gp_egv)
  85 #define GvENAME(gv)     GvNAME(GvEGV(gv) ? GvEGV(gv) : gv)
  86 #define GvESTASH(gv)    GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv)
  87
  88 #define GVf_INTRO       0x01
  89 #define GVf_MULTI       0x02
  90 #define GVf_ASSUMECV    0x04
  91 #define GVf_IN_PAD      0x08
  92 #define GVf_IMPORTED    0xF0
  93 #define GVf_IMPORTED_SV   0x10
  94 #define GVf_IMPORTED_AV   0x20
  95 #define GVf_IMPORTED_HV   0x40
  96 #define GVf_IMPORTED_CV   0x80
  97
  98 #define GvINTRO(gv)             (GvFLAGS(gv) & GVf_INTRO)
  99 #define GvINTRO_on(gv)          (GvFLAGS(gv) |= GVf_INTRO)
 100 #define GvINTRO_off(gv)         (GvFLAGS(gv) &= ~GVf_INTRO)
 101
 102 #define GvMULTI(gv)             (GvFLAGS(gv) & GVf_MULTI)
 103 #define GvMULTI_on(gv)          (GvFLAGS(gv) |= GVf_MULTI)
 104 #define GvMULTI_off(gv)         (GvFLAGS(gv) &= ~GVf_MULTI)
 105
 106 #define GvASSUMECV(gv)          (GvFLAGS(gv) & GVf_ASSUMECV)
 107 #define GvASSUMECV_on(gv)       (GvFLAGS(gv) |= GVf_ASSUMECV)
 108 #define GvASSUMECV_off(gv)      (GvFLAGS(gv) &= ~GVf_ASSUMECV)
 109
 110 #define GvIMPORTED(gv)          (GvFLAGS(gv) & GVf_IMPORTED)
 111 #define GvIMPORTED_on(gv)       (GvFLAGS(gv) |= GVf_IMPORTED)
 112 #define GvIMPORTED_off(gv)      (GvFLAGS(gv) &= ~GVf_IMPORTED)
 113
 114 #define GvIMPORTED_SV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_SV)
 115 #define GvIMPORTED_SV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_SV)
 116 #define GvIMPORTED_SV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_SV)
 117
 118 #define GvIMPORTED_AV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_AV)
 119 #define GvIMPORTED_AV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_AV)
 120 #define GvIMPORTED_AV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_AV)
 121
 122 #define GvIMPORTED_HV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_HV)
 123 #define GvIMPORTED_HV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_HV)
 124 #define GvIMPORTED_HV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_HV)
 125
 126 #define GvIMPORTED_CV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_CV)
 127 #define GvIMPORTED_CV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_CV)
 128 #define GvIMPORTED_CV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_CV)
 129
 130 #define GvIN_PAD(gv)            (GvFLAGS(gv) & GVf_IN_PAD)
 131 #define GvIN_PAD_on(gv)         (GvFLAGS(gv) |= GVf_IN_PAD)
 132 #define GvIN_PAD_off(gv)        (GvFLAGS(gv) &= ~GVf_IN_PAD)
 133
 134 #define Nullgv Null(GV*)
 135
 136 #define DM_UID   0x003
 137 #define DM_RUID   0x001
 138 #define DM_EUID   0x002
 139 #define DM_GID   0x030
 140 #define DM_RGID   0x010
 141 #define DM_EGID   0x020
 142 #define DM_DELAY 0x100
 143
 144 /*
 145  * symbol creation flags, for use in gv_fetchpv() and get_*v()
 146  */
 147 #define GV_ADD          0x01    /* add, if symbol not already there */
 148 #define GV_ADDMULTI     0x02    /* add, pretending it has been added already */
 149 #define GV_ADDWARN      0x04    /* add, but warn if symbol wasn't already there */
 150 #define GV_ADDINEVAL    0x08    /* add, as though we're doing so within an eval */
 151 #define GV_NOINIT       0x10    /* add, but don't init symbol, if type != PVGV */