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

   1 /*    cv.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 /* This structure much match XPVCV in B/C.pm and the beginning of XPVFM
  11  * in sv.h  */
  12
  13 struct xpvcv {
  14     char *      xpv_pv;         /* pointer to malloced string */
  15     STRLEN      xpv_cur;        /* length of xp_pv as a C string */
  16     STRLEN      xpv_len;        /* allocated size */
  17     IV          xof_off;        /* integer value */
  18     NV          xnv_nv;         /* numeric value, if any */
  19     MAGIC*      xmg_magic;      /* magic for scalar array */
  20     HV*         xmg_stash;      /* class package */
  21
  22     HV *        xcv_stash;
  23     OP *        xcv_start;
  24     OP *        xcv_root;
  25     void        (*xcv_xsub) (pTHXo_ CV*);
  26     ANY         xcv_xsubany;
  27     GV *        xcv_gv;
  28     char *      xcv_file;
  29     long        xcv_depth;      /* >= 2 indicates recursive call */
  30     AV *        xcv_padlist;
  31     CV *        xcv_outside;
  32 #ifdef USE_THREADS
  33     perl_mutex *xcv_mutexp;
  34     struct perl_thread *xcv_owner;      /* current owner thread */
  35 #endif /* USE_THREADS */
  36     cv_flags_t  xcv_flags;
  37 };
  38
  39 /*
  40 =for apidoc AmU||Nullcv
  41 Null CV pointer.
  42
  43 =for apidoc Am|HV*|CvSTASH|CV* cv
  44 Returns the stash of the CV.
  45
  46 =cut
  47 */
  48
  49 #define Nullcv Null(CV*)
  50
  51 #define CvSTASH(sv)     ((XPVCV*)SvANY(sv))->xcv_stash
  52 #define CvSTART(sv)     ((XPVCV*)SvANY(sv))->xcv_start
  53 #define CvROOT(sv)      ((XPVCV*)SvANY(sv))->xcv_root
  54 #define CvXSUB(sv)      ((XPVCV*)SvANY(sv))->xcv_xsub
  55 #define CvXSUBANY(sv)   ((XPVCV*)SvANY(sv))->xcv_xsubany
  56 #define CvGV(sv)        ((XPVCV*)SvANY(sv))->xcv_gv
  57 #define CvFILE(sv)      ((XPVCV*)SvANY(sv))->xcv_file
  58 #define CvFILEGV(sv)    (gv_fetchfile(CvFILE(sv))
  59 #define CvDEPTH(sv)     ((XPVCV*)SvANY(sv))->xcv_depth
  60 #define CvPADLIST(sv)   ((XPVCV*)SvANY(sv))->xcv_padlist
  61 #define CvOUTSIDE(sv)   ((XPVCV*)SvANY(sv))->xcv_outside
  62 #ifdef USE_THREADS
  63 #define CvMUTEXP(sv)    ((XPVCV*)SvANY(sv))->xcv_mutexp
  64 #define CvOWNER(sv)     ((XPVCV*)SvANY(sv))->xcv_owner
  65 #endif /* USE_THREADS */
  66 #define CvFLAGS(sv)     ((XPVCV*)SvANY(sv))->xcv_flags
  67
  68 #define CVf_CLONE       0x0001  /* anon CV uses external lexicals */
  69 #define CVf_CLONED      0x0002  /* a clone of one of those */
  70 #define CVf_ANON        0x0004  /* CvGV() can't be trusted */
  71 #define CVf_OLDSTYLE    0x0008
  72 #define CVf_UNIQUE      0x0010  /* can't be cloned */
  73 #define CVf_NODEBUG     0x0020  /* no DB::sub indirection for this CV
  74                                    (esp. useful for special XSUBs) */
  75 #define CVf_METHOD      0x0040  /* CV is explicitly marked as a method */
  76 #define CVf_LOCKED      0x0080  /* CV locks itself or first arg on entry */
  77 #define CVf_LVALUE      0x0100  /* CV return value can be used as lvalue */
  78
  79 #define CvCLONE(cv)             (CvFLAGS(cv) & CVf_CLONE)
  80 #define CvCLONE_on(cv)          (CvFLAGS(cv) |= CVf_CLONE)
  81 #define CvCLONE_off(cv)         (CvFLAGS(cv) &= ~CVf_CLONE)
  82
  83 #define CvCLONED(cv)            (CvFLAGS(cv) & CVf_CLONED)
  84 #define CvCLONED_on(cv)         (CvFLAGS(cv) |= CVf_CLONED)
  85 #define CvCLONED_off(cv)        (CvFLAGS(cv) &= ~CVf_CLONED)
  86
  87 #define CvANON(cv)              (CvFLAGS(cv) & CVf_ANON)
  88 #define CvANON_on(cv)           (CvFLAGS(cv) |= CVf_ANON)
  89 #define CvANON_off(cv)          (CvFLAGS(cv) &= ~CVf_ANON)
  90
  91 #ifdef PERL_XSUB_OLDSTYLE
  92 #define CvOLDSTYLE(cv)          (CvFLAGS(cv) & CVf_OLDSTYLE)
  93 #define CvOLDSTYLE_on(cv)       (CvFLAGS(cv) |= CVf_OLDSTYLE)
  94 #define CvOLDSTYLE_off(cv)      (CvFLAGS(cv) &= ~CVf_OLDSTYLE)
  95 #endif
  96
  97 #define CvUNIQUE(cv)            (CvFLAGS(cv) & CVf_UNIQUE)
  98 #define CvUNIQUE_on(cv)         (CvFLAGS(cv) |= CVf_UNIQUE)
  99 #define CvUNIQUE_off(cv)        (CvFLAGS(cv) &= ~CVf_UNIQUE)
 100
 101 #define CvNODEBUG(cv)           (CvFLAGS(cv) & CVf_NODEBUG)
 102 #define CvNODEBUG_on(cv)        (CvFLAGS(cv) |= CVf_NODEBUG)
 103 #define CvNODEBUG_off(cv)       (CvFLAGS(cv) &= ~CVf_NODEBUG)
 104
 105 #define CvMETHOD(cv)            (CvFLAGS(cv) & CVf_METHOD)
 106 #define CvMETHOD_on(cv)         (CvFLAGS(cv) |= CVf_METHOD)
 107 #define CvMETHOD_off(cv)        (CvFLAGS(cv) &= ~CVf_METHOD)
 108
 109 #define CvLOCKED(cv)            (CvFLAGS(cv) & CVf_LOCKED)
 110 #define CvLOCKED_on(cv)         (CvFLAGS(cv) |= CVf_LOCKED)
 111 #define CvLOCKED_off(cv)        (CvFLAGS(cv) &= ~CVf_LOCKED)
 112
 113 #define CvLVALUE(cv)            (CvFLAGS(cv) & CVf_LVALUE)
 114 #define CvLVALUE_on(cv)         (CvFLAGS(cv) |= CVf_LVALUE)
 115 #define CvLVALUE_off(cv)        (CvFLAGS(cv) &= ~CVf_LVALUE)
 116
 117 #define CvEVAL(cv)              (CvUNIQUE(cv) && !SvFAKE(cv))
 118 #define CvEVAL_on(cv)           (CvUNIQUE_on(cv),SvFAKE_off(cv))
 119 #define CvEVAL_off(cv)          CvUNIQUE_off(cv)
 120
 121 /* BEGIN|INIT|END */
 122 #define CvSPECIAL(cv)           (CvUNIQUE(cv) && SvFAKE(cv))
 123 #define CvSPECIAL_on(cv)        (CvUNIQUE_on(cv),SvFAKE_on(cv))
 124 #define CvSPECIAL_off(cv)       (CvUNIQUE_off(cv),SvFAKE_off(cv))