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1 | /* hv.h |
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2 | * |
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3 | * Copyright (c) 1991-1994, Larry Wall |
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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 | * |
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8 | */ |
| 9 | |
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10 | typedef struct he HE; |
| 11 | |
| 12 | struct he { |
| 13 | HE *hent_next; |
| 14 | char *hent_key; |
| 15 | SV *hent_val; |
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16 | U32 hent_hash; |
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17 | I32 hent_klen; |
| 18 | }; |
| 19 | |
| 20 | struct xpvhv { |
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21 | char * xhv_array; /* pointer to malloced string */ |
| 22 | STRLEN xhv_fill; /* how full xhv_array currently is */ |
| 23 | STRLEN xhv_max; /* subscript of last element of xhv_array */ |
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24 | I32 xhv_keys; /* how many elements in the array */ |
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25 | double xnv_nv; /* numeric value, if any */ |
| 26 | MAGIC* xmg_magic; /* magic for scalar array */ |
| 27 | HV* xmg_stash; /* class package */ |
| 28 | |
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29 | I32 xhv_riter; /* current root of iterator */ |
| 30 | HE *xhv_eiter; /* current entry of iterator */ |
| 31 | PMOP *xhv_pmroot; /* list of pm's for this package */ |
| 32 | char *xhv_name; /* name, if a symbol table */ |
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33 | }; |
| 34 | |
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35 | #define PERL_HASH(hash,str,len) \ |
| 36 | STMT_START { \ |
| 37 | register char *s_PeRlHaSh = str; \ |
| 38 | register I32 i_PeRlHaSh = len; \ |
| 39 | register U32 hash_PeRlHaSh = 0; \ |
| 40 | while (i_PeRlHaSh--) \ |
| 41 | hash_PeRlHaSh = hash_PeRlHaSh * 33 + *s_PeRlHaSh++; \ |
| 42 | (hash) = hash_PeRlHaSh; \ |
| 43 | } STMT_END |
| 44 | |
| 45 | |
| 46 | /* these hash entry flags ride on hent_klen */ |
| 47 | |
| 48 | #define HEf_LAZYDEL -1 /* entry must be deleted during next iter step */ |
| 49 | #define HEf_SVKEY -2 /* hent_key is a SV* (only for magic/tied HVs) */ |
| 50 | |
| 51 | |
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52 | #define Nullhv Null(HV*) |
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53 | #define HvARRAY(hv) ((HE**)((XPVHV*) SvANY(hv))->xhv_array) |
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54 | #define HvFILL(hv) ((XPVHV*) SvANY(hv))->xhv_fill |
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55 | #define HvMAX(hv) ((XPVHV*) SvANY(hv))->xhv_max |
| 56 | #define HvKEYS(hv) ((XPVHV*) SvANY(hv))->xhv_keys |
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57 | #define HvRITER(hv) ((XPVHV*) SvANY(hv))->xhv_riter |
| 58 | #define HvEITER(hv) ((XPVHV*) SvANY(hv))->xhv_eiter |
| 59 | #define HvPMROOT(hv) ((XPVHV*) SvANY(hv))->xhv_pmroot |
| 60 | #define HvNAME(hv) ((XPVHV*) SvANY(hv))->xhv_name |
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61 | |
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62 | #define HvSHAREKEYS(hv) (SvFLAGS(hv) & SVphv_SHAREKEYS) |
| 63 | #define HvSHAREKEYS_on(hv) (SvFLAGS(hv) |= SVphv_SHAREKEYS) |
| 64 | #define HvSHAREKEYS_off(hv) (SvFLAGS(hv) &= ~SVphv_SHAREKEYS) |
| 65 | |
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66 | #ifdef OVERLOAD |
| 67 | |
| 68 | /* Maybe amagical: */ |
| 69 | /* #define HV_AMAGICmb(hv) (SvFLAGS(hv) & (SVpgv_badAM | SVpgv_AM)) */ |
| 70 | |
| 71 | #define HV_AMAGIC(hv) (SvFLAGS(hv) & SVpgv_AM) |
| 72 | #define HV_AMAGIC_on(hv) (SvFLAGS(hv) |= SVpgv_AM) |
| 73 | #define HV_AMAGIC_off(hv) (SvFLAGS(hv) &= ~SVpgv_AM) |
| 74 | |
| 75 | /* |
| 76 | #define HV_AMAGICbad(hv) (SvFLAGS(hv) & SVpgv_badAM) |
| 77 | #define HV_badAMAGIC_on(hv) (SvFLAGS(hv) |= SVpgv_badAM) |
| 78 | #define HV_badAMAGIC_off(hv) (SvFLAGS(hv) &= ~SVpgv_badAM) |
| 79 | */ |
| 80 | |
| 81 | #endif /* OVERLOAD */ |
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82 | |
| 83 | #define Nullhe Null(HE*) |
| 84 | #define HeNEXT(he) (he)->hent_next |
| 85 | #define HeKEY(he) (he)->hent_key |
| 86 | #define HeKLEN(he) (he)->hent_klen |
| 87 | #define HeVAL(he) (he)->hent_val |
| 88 | #define HeHASH(he) (he)->hent_hash |
| 89 | #define HePV(he) ((he)->hent_klen == HEf_SVKEY) ? \ |
| 90 | SvPV((SV*)((he)->hent_key),na) : \ |
| 91 | (he)->hent_key)) |
| 92 | #define HeSVKEY(he) (((he)->hent_key && \ |
| 93 | (he)->hent_klen == HEf_SVKEY) ? \ |
| 94 | (SV*)((he)->hent_key) : Nullsv) |
| 95 | |
| 96 | #define HeSVKEY_force(he) ((he)->hent_key ? \ |
| 97 | (((he)->hent_klen == HEf_SVKEY) ? \ |
| 98 | (SV*)((he)->hent_key) : \ |
| 99 | sv_2mortal(newSVpv((he)->hent_key, \ |
| 100 | (he)->hent_klen))) : \ |
| 101 | &sv_undef) |
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