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/* hv.h
*
* Copyright (c) 1991-1994, 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.
*
*/
typedef struct he HE;
struct he {
HE *hent_next;
char *hent_key;
SV *hent_val;
U32 hent_hash;
I32 hent_klen;
};
struct xpvhv {
char * xhv_array; /* pointer to malloced string */
STRLEN xhv_fill; /* how full xhv_array currently is */
STRLEN xhv_max; /* subscript of last element of xhv_array */
I32 xhv_keys; /* how many elements in the array */
double xnv_nv; /* numeric value, if any */
MAGIC* xmg_magic; /* magic for scalar array */
HV* xmg_stash; /* class package */
I32 xhv_riter; /* current root of iterator */
HE *xhv_eiter; /* current entry of iterator */
PMOP *xhv_pmroot; /* list of pm's for this package */
char *xhv_name; /* name, if a symbol table */
};
#define PERL_HASH(hash,str,len) \
STMT_START { \
register char *s_PeRlHaSh = str; \
register I32 i_PeRlHaSh = len; \
register U32 hash_PeRlHaSh = 0; \
while (i_PeRlHaSh--) \
hash_PeRlHaSh = hash_PeRlHaSh * 33 + *s_PeRlHaSh++; \
(hash) = hash_PeRlHaSh; \
} STMT_END
/* these hash entry flags ride on hent_klen */
#define HEf_LAZYDEL -1 /* entry must be deleted during next iter step */
#define HEf_SVKEY -2 /* hent_key is a SV* (only for magic/tied HVs) */
#define Nullhv Null(HV*)
#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
#define HvSHAREKEYS(hv) (SvFLAGS(hv) & SVphv_SHAREKEYS)
#define HvSHAREKEYS_on(hv) (SvFLAGS(hv) |= SVphv_SHAREKEYS)
#define HvSHAREKEYS_off(hv) (SvFLAGS(hv) &= ~SVphv_SHAREKEYS)
#ifdef OVERLOAD
/* Maybe amagical: */
/* #define HV_AMAGICmb(hv) (SvFLAGS(hv) & (SVpgv_badAM | SVpgv_AM)) */
#define HV_AMAGIC(hv) (SvFLAGS(hv) & SVpgv_AM)
#define HV_AMAGIC_on(hv) (SvFLAGS(hv) |= SVpgv_AM)
#define HV_AMAGIC_off(hv) (SvFLAGS(hv) &= ~SVpgv_AM)
/*
#define HV_AMAGICbad(hv) (SvFLAGS(hv) & SVpgv_badAM)
#define HV_badAMAGIC_on(hv) (SvFLAGS(hv) |= SVpgv_badAM)
#define HV_badAMAGIC_off(hv) (SvFLAGS(hv) &= ~SVpgv_badAM)
*/
#endif /* OVERLOAD */
#define Nullhe Null(HE*)
#define HeNEXT(he) (he)->hent_next
#define HeKEY(he) (he)->hent_key
#define HeKLEN(he) (he)->hent_klen
#define HeVAL(he) (he)->hent_val
#define HeHASH(he) (he)->hent_hash
#define HePV(he) ((he)->hent_klen == HEf_SVKEY) ? \
SvPV((SV*)((he)->hent_key),na) : \
(he)->hent_key))
#define HeSVKEY(he) (((he)->hent_key && \
(he)->hent_klen == HEf_SVKEY) ? \
(SV*)((he)->hent_key) : Nullsv)
#define HeSVKEY_force(he) ((he)->hent_key ? \
(((he)->hent_klen == HEf_SVKEY) ? \
(SV*)((he)->hent_key) : \
sv_2mortal(newSVpv((he)->hent_key, \
(he)->hent_klen))) : \
&sv_undef)
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