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- /* hv.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.
- *
- */
-
- typedef struct he HE;
- typedef struct hek HEK;
-
- struct he {
- HE *hent_next;
- HEK *hent_hek;
- SV *hent_val;
- };
-
- struct hek {
- U32 hek_hash;
- I32 hek_len;
- char hek_key[1];
- };
-
- /* This structure must match the beginning of struct xpvmg in sv.h. */
- 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 */
- IV 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 (for use only in magic/tied HVs) */
- #define HEf_SVKEY -2 /* hent_key is a SV* */
-
-
- #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)
-
- #define HvLAZYDEL(hv) (SvFLAGS(hv) & SVphv_LAZYDEL)
- #define HvLAZYDEL_on(hv) (SvFLAGS(hv) |= SVphv_LAZYDEL)
- #define HvLAZYDEL_off(hv) (SvFLAGS(hv) &= ~SVphv_LAZYDEL)
-
- #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_hek(he) (he)->hent_hek
- #define HeKEY(he) HEK_KEY(HeKEY_hek(he))
- #define HeKEY_sv(he) (*(SV**)HeKEY(he))
- #define HeKLEN(he) HEK_LEN(HeKEY_hek(he))
- #define HeVAL(he) (he)->hent_val
- #define HeHASH(he) HEK_HASH(HeKEY_hek(he))
- #define HePV(he,lp) ((HeKLEN(he) == HEf_SVKEY) ? \
- SvPV(HeKEY_sv(he),lp) : \
- (((lp = HeKLEN(he)) >= 0) ? \
- HeKEY(he) : Nullch))
-
- #define HeSVKEY(he) ((HeKEY(he) && \
- HeKLEN(he) == HEf_SVKEY) ? \
- HeKEY_sv(he) : Nullsv)
-
- #define HeSVKEY_force(he) (HeKEY(he) ? \
- ((HeKLEN(he) == HEf_SVKEY) ? \
- HeKEY_sv(he) : \
- sv_2mortal(newSVpv(HeKEY(he), \
- HeKLEN(he)))) : \
- &PL_sv_undef)
- #define HeSVKEY_set(he,sv) ((HeKLEN(he) = HEf_SVKEY), (HeKEY_sv(he) = sv))
-
- #define Nullhek Null(HEK*)
- #define HEK_BASESIZE STRUCT_OFFSET(HEK, hek_key[0])
- #define HEK_HASH(hek) (hek)->hek_hash
- #define HEK_LEN(hek) (hek)->hek_len
- #define HEK_KEY(hek) (hek)->hek_key
-