/* hash key -- defined separately for use as shared pointer */
struct hek {
- U32 hek_hash; /* hash of key */
- I32 hek_len; /* length of hash key */
- char hek_key[1]; /* variable-length hash key */
+ U32 hek_hash; /* computed hash of key */
+ I32 hek_len; /* length of the hash key */
+ /* Be careful! Sometimes we store a pointer in the hek_key
+ * buffer, which means it must be 8 byte aligned or things
+ * dont work on aligned platforms like HPUX
+ * Also beware, the last byte of the hek_key buffer is a
+ * hidden flags byte about the key. */
+ char hek_key[1]; /* variable-length hash key */
/* the hash-key is \0-terminated */
/* after the \0 there is a byte for flags, such as whether the key
- is UTF-8 */
+ is UTF-8 or WAS-UTF-8, or an SV */
};
struct shared_he {
U32 xhv_last_rand; /* last random value for hash traversal,
used to detect each() after insert for warnings */
#endif
- U32 xhv_fill_lazy;
U32 xhv_aux_flags; /* assorted extra flags */
};
/*
=head1 Hash Manipulation Functions
-=for apidoc AmU||HEf_SVKEY
+=for apidoc AmnU||HEf_SVKEY
This flag, used in the length slot of hash entries and magic structures,
specifies the structure contains an C<SV*> pointer where a C<char*> pointer
is to be expected. (For information only--not to be used).
=head1 Handy Values
-=for apidoc AmU||Nullhv
+=for apidoc ADmnU||Nullhv
Null HV pointer.
(deprecated - use C<(HV *)NULL> instead)
# define Nullhv Null(HV*)
#endif
#define HvARRAY(hv) ((hv)->sv_u.svu_hash)
+
+/*
+
+=for apidoc Am|STRLEN|HvFILL|HV *const hv
+
+See L</hv_fill>.
+
+=cut
+
+*/
#define HvFILL(hv) Perl_hv_fill(aTHX_ MUTABLE_HV(hv))
#define HvMAX(hv) ((XPVHV*) SvANY(hv))->xhv_max
/* This quite intentionally does no flag checking first. That's your
((SvOOK(hv) && HvAUX(hv)->xhv_name_u.xhvnameu_name && HvAUX(hv)->xhv_name_count != -1) \
? HEK_UTF8(HvENAME_HEK_NN(hv)) : 0)
-/* the number of keys (including any placeholders) */
+/* the number of keys (including any placeholders) - NOT PART OF THE API */
#define XHvTOTALKEYS(xhv) ((xhv)->xhv_keys)
/*
#define HVhek_UTF8 0x01 /* Key is utf8 encoded. */
#define HVhek_WASUTF8 0x02 /* Key is bytes here, but was supplied as utf8. */
#define HVhek_UNSHARED 0x08 /* This key isn't a shared hash key. */
-#define HVhek_FREEKEY 0x100 /* Internal flag to say key is malloc()ed. */
+/* the following flags are options for functions, they are not stored in heks */
+#define HVhek_FREEKEY 0x100 /* Internal flag to say key is Newx()ed. */
#define HVhek_PLACEHOLD 0x200 /* Internal flag to create placeholder.
* (may change, but Storable is a core module) */
#define HVhek_KEYCANONICAL 0x400 /* Internal flag - key is in canonical form.
(val), (hash)))
#define hv_exists_ent(hv, keysv, hash) \
- (hv_common((hv), (keysv), NULL, 0, 0, HV_FETCH_ISEXISTS, 0, (hash)) \
- ? TRUE : FALSE)
+ cBOOL(hv_common((hv), (keysv), NULL, 0, 0, HV_FETCH_ISEXISTS, 0, (hash)))
#define hv_fetch_ent(hv, keysv, lval, hash) \
((HE *) hv_common((hv), (keysv), NULL, 0, 0, \
((lval) ? HV_FETCH_LVALUE : 0), NULL, (hash)))
(HV_FETCH_ISSTORE|HV_FETCH_JUST_SV), \
(val), (hash)))
+
+
#define hv_exists(hv, key, klen) \
- (hv_common_key_len((hv), (key), (klen), HV_FETCH_ISEXISTS, NULL, 0) \
- ? TRUE : FALSE)
+ cBOOL(hv_common_key_len((hv), (key), (klen), HV_FETCH_ISEXISTS, NULL, 0))
#define hv_fetch(hv, key, klen, lval) \
((SV**) hv_common_key_len((hv), (key), (klen), (lval) \
(MUTABLE_SV(hv_common_key_len((hv), (key), (klen), \
(flags) | HV_DELETE, NULL, 0)))
+/* Provide 's' suffix subs for constant strings (and avoid needing to count
+ * chars). See STR_WITH_LEN in handy.h - because these are macros we cant use
+ * STR_WITH_LEN to do the work, we have to unroll it. */
+#define hv_existss(hv, key) \
+ hv_exists((hv), ("" key ""), (sizeof(key)-1))
+
+#define hv_fetchs(hv, key, lval) \
+ hv_fetch((hv), ("" key ""), (sizeof(key)-1), (lval))
+
+#define hv_deletes(hv, key, flags) \
+ hv_delete((hv), ("" key ""), (sizeof(key)-1), (flags))
+
+#define hv_name_sets(hv, name, flags) \
+ hv_name_set((hv),("" name ""),(sizeof(name)-1), flags)
+
+#define hv_stores(hv, key, val) \
+ hv_store((hv), ("" key ""), (sizeof(key)-1), (val), 0)
+
#ifdef PERL_CORE
# define hv_storehek(hv, hek, val) \
hv_common((hv), NULL, HEK_KEY(hek), HEK_LEN(hek), HEK_UTF8(hek), \
};
/*
-=for apidoc m|SV *|refcounted_he_fetch_pvs|const struct refcounted_he *chain|const char *key|U32 flags
+=for apidoc m|SV *|refcounted_he_fetch_pvs|const struct refcounted_he *chain|"key"|U32 flags
-Like L</refcounted_he_fetch_pvn>, but takes a C<NUL>-terminated literal string
+Like L</refcounted_he_fetch_pvn>, but takes a literal string
instead of a string/length pair, and no precomputed hash.
=cut
Perl_refcounted_he_fetch_pvn(aTHX_ chain, STR_WITH_LEN(key), 0, flags)
/*
-=for apidoc m|struct refcounted_he *|refcounted_he_new_pvs|struct refcounted_he *parent|const char *key|SV *value|U32 flags
+=for apidoc m|struct refcounted_he *|refcounted_he_new_pvs|struct refcounted_he *parent|"key"|SV *value|U32 flags
-Like L</refcounted_he_new_pvn>, but takes a C<NUL>-terminated literal string
+Like L</refcounted_he_new_pvn>, but takes a literal string
instead of a string/length pair, and no precomputed hash.
=cut
https://perl5.git.perl.org / perl5.git / blobdiff