source: trunk/third/perl/gv.h @ 10724

/*    gv.h
 *
 *    Copyright (c) 1991-1997, Larry Wall
 *
 *    You may distribute under the terms of either the GNU General Public
 *    License or the Artistic License, as specified in the README file.
 *
 */

struct gp {
    SV *        gp_sv;          /* scalar value */
    U32         gp_refcnt;      /* how many globs point to this? */
    struct io * gp_io;          /* filehandle value */
    CV *        gp_form;        /* format value */
    AV *        gp_av;          /* array value */
    HV *        gp_hv;          /* hash value */
    GV *        gp_egv;         /* effective gv, if *glob */
    CV *        gp_cv;          /* subroutine value */
    U32         gp_cvgen;       /* generational validity of cached gv_cv */
    I32         gp_lastexpr;    /* used by nothing_in_common() */
    line_t      gp_line;        /* line first declared at (for -w) */
    GV *        gp_filegv;      /* file first declared in (for -w) */
};

#if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
#define MICROPORT
#endif

#define GvXPVGV(gv)     ((XPVGV*)SvANY(gv))

#define GvGP(gv)        (GvXPVGV(gv)->xgv_gp)
#define GvNAME(gv)      (GvXPVGV(gv)->xgv_name)
#define GvNAMELEN(gv)   (GvXPVGV(gv)->xgv_namelen)
#define GvSTASH(gv)     (GvXPVGV(gv)->xgv_stash)
#define GvFLAGS(gv)     (GvXPVGV(gv)->xgv_flags)

#define GvSV(gv)        (GvGP(gv)->gp_sv)
#define GvREFCNT(gv)    (GvGP(gv)->gp_refcnt)
#define GvIO(gv)        ((gv) && SvTYPE((SV*)gv) == SVt_PVGV ? GvIOp(gv) : 0)
#define GvIOp(gv)       (GvGP(gv)->gp_io)
#define GvIOn(gv)       (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv)))

#define GvFORM(gv)      (GvGP(gv)->gp_form)
#define GvAV(gv)        (GvGP(gv)->gp_av)

/* This macro is deprecated.  Do not use! */
#define GvREFCNT_inc(gv) ((GV*)SvREFCNT_inc(gv))        /* DO NOT USE */

#ifdef  MICROPORT       /* Microport 2.4 hack */
AV *GvAVn();
#else
#define GvAVn(gv)       (GvGP(gv)->gp_av ? \
                         GvGP(gv)->gp_av : \
                         GvGP(gv_AVadd(gv))->gp_av)
#endif
#define GvHV(gv)        ((GvGP(gv))->gp_hv)

#ifdef  MICROPORT       /* Microport 2.4 hack */
HV *GvHVn();
#else
#define GvHVn(gv)       (GvGP(gv)->gp_hv ? \
                         GvGP(gv)->gp_hv : \
                         GvGP(gv_HVadd(gv))->gp_hv)
#endif                  /* Microport 2.4 hack */

#define GvCV(gv)        (GvGP(gv)->gp_cv)
#define GvCVGEN(gv)     (GvGP(gv)->gp_cvgen)
#define GvCVu(gv)       (GvGP(gv)->gp_cvgen ? Nullcv : GvGP(gv)->gp_cv)

#define GvLASTEXPR(gv)  (GvGP(gv)->gp_lastexpr)

#define GvLINE(gv)      (GvGP(gv)->gp_line)
#define GvFILEGV(gv)    (GvGP(gv)->gp_filegv)

#define GvEGV(gv)       (GvGP(gv)->gp_egv)
#define GvENAME(gv)     GvNAME(GvEGV(gv) ? GvEGV(gv) : gv)
#define GvESTASH(gv)    GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv)

#define GVf_INTRO       0x01
#define GVf_MULTI       0x02
#define GVf_ASSUMECV    0x04
#define GVf_IMPORTED    0xF0
#define GVf_IMPORTED_SV   0x10
#define GVf_IMPORTED_AV   0x20
#define GVf_IMPORTED_HV   0x40
#define GVf_IMPORTED_CV   0x80

#define GvINTRO(gv)             (GvFLAGS(gv) & GVf_INTRO)
#define GvINTRO_on(gv)          (GvFLAGS(gv) |= GVf_INTRO)
#define GvINTRO_off(gv)         (GvFLAGS(gv) &= ~GVf_INTRO)

#define GvMULTI(gv)             (GvFLAGS(gv) & GVf_MULTI)
#define GvMULTI_on(gv)          (GvFLAGS(gv) |= GVf_MULTI)
#define GvMULTI_off(gv)         (GvFLAGS(gv) &= ~GVf_MULTI)

#define GvASSUMECV(gv)          (GvFLAGS(gv) & GVf_ASSUMECV)
#define GvASSUMECV_on(gv)       (GvFLAGS(gv) |= GVf_ASSUMECV)
#define GvASSUMECV_off(gv)      (GvFLAGS(gv) &= ~GVf_ASSUMECV)

#define GvIMPORTED(gv)          (GvFLAGS(gv) & GVf_IMPORTED)
#define GvIMPORTED_on(gv)       (GvFLAGS(gv) |= GVf_IMPORTED)
#define GvIMPORTED_off(gv)      (GvFLAGS(gv) &= ~GVf_IMPORTED)

#define GvIMPORTED_SV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_SV)
#define GvIMPORTED_SV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_SV)
#define GvIMPORTED_SV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_SV)

#define GvIMPORTED_AV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_AV)
#define GvIMPORTED_AV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_AV)
#define GvIMPORTED_AV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_AV)

#define GvIMPORTED_HV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_HV)
#define GvIMPORTED_HV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_HV)
#define GvIMPORTED_HV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_HV)

#define GvIMPORTED_CV(gv)       (GvFLAGS(gv) & GVf_IMPORTED_CV)
#define GvIMPORTED_CV_on(gv)    (GvFLAGS(gv) |= GVf_IMPORTED_CV)
#define GvIMPORTED_CV_off(gv)   (GvFLAGS(gv) &= ~GVf_IMPORTED_CV)

#define Nullgv Null(GV*)

#define DM_UID   0x003
#define DM_RUID   0x001
#define DM_EUID   0x002
#define DM_GID   0x030
#define DM_RGID   0x010
#define DM_EGID   0x020
#define DM_DELAY 0x100

#define GV_ADD          0x01
#define GV_ADDMULTI     0x02
#define GV_ADDWARN      0x04