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| author | Nick Ing-Simmons <nik@tiuk.ti.com> | 2001-12-18 15:55:22 +0000 |
|---|---|---|
| committer | Nick Ing-Simmons <nik@tiuk.ti.com> | 2001-12-18 15:55:22 +0000 |
| commit | 6bf628f32975338dd0214789d0e8f45e626885a8 (patch) | |
| tree | 6fd7ff4a46f0cbed519fe92c6244f38388482172 /hv.h | |
| parent | 4836c79c1e6601d963c96214b2b763125cf700bf (diff) | |
| download | perl-6bf628f32975338dd0214789d0e8f45e626885a8.tar.gz | |
Tidied version of Jeffrey Friedl's <jfriedl@yahoo.com> restricted hashes
- added delete of READONLY value inhibit & test for same
- re-tabbed
p4raw-id: //depot/perlio@13760
Diffstat (limited to 'hv.h')
| -rw-r--r-- | hv.h | 22 |
1 files changed, 21 insertions, 1 deletions
@@ -33,6 +33,7 @@ struct xpvhv { STRLEN xhv_max; /* subscript of last element of xhv_array */ IV xhv_keys; /* how many elements in the array */ NV xnv_nv; /* numeric value, if any */ +#define xhv_placeholders xnv_nv MAGIC* xmg_magic; /* magic for scalar array */ HV* xmg_stash; /* class package */ @@ -126,12 +127,31 @@ C<SV*>. #define HvARRAY(hv) (*(HE***)&((XPVHV*) SvANY(hv))->xhv_array) #define HvFILL(hv) ((XPVHV*) SvANY(hv))->xhv_fill #define HvMAX(hv) ((XPVHV*) SvANY(hv))->xhv_max -#define HvKEYS(hv) ((XPVHV*) SvANY(hv))->xhv_keys #define HvRITER(hv) ((XPVHV*) SvANY(hv))->xhv_riter #define HvEITER(hv) ((XPVHV*) SvANY(hv))->xhv_eiter #define HvPMROOT(hv) ((XPVHV*) SvANY(hv))->xhv_pmroot #define HvNAME(hv) ((XPVHV*) SvANY(hv))->xhv_name +/* the number of keys (including any placeholers) */ +#define XHvTOTALKEYS(xhv) ((xhv)->xhv_keys) + +/* The number of placeholders in the enumerated-keys hash */ +#define XHvPLACEHOLDERS(xhv) ((IV)((xhv)->xhv_placeholders)) + +/* the number of keys that exist() (i.e. excluding placeholers) */ +#define XHvUSEDKEYS(xhv) (XHvTOTALKEYS(xhv) - XHvPLACEHOLDERS(xhv)) + +/* + * HvKEYS gets the number of keys that actually exist(), and is provided + * for backwards compatibility with old XS code. The core uses HvUSEDKEYS + * (keys, excluding placeholdes) and HvTOTALKEYS (including placeholders) + */ +#define HvKEYS(hv) XHvUSEDKEYS((XPVHV*) SvANY(hv)) +#define HvUSEDKEYS(hv) XHvUSEDKEYS((XPVHV*) SvANY(hv)) +#define HvTOTALKEYS(hv) XHvTOTALKEYS((XPVHV*) SvANY(hv)) +#define HvPLACEHOLDERS(hv) XHvPLACEHOLDERS((XPVHV*) SvANY(hv)) + + #define HvSHAREKEYS(hv) (SvFLAGS(hv) & SVphv_SHAREKEYS) #define HvSHAREKEYS_on(hv) (SvFLAGS(hv) |= SVphv_SHAREKEYS) #define HvSHAREKEYS_off(hv) (SvFLAGS(hv) &= ~SVphv_SHAREKEYS) |