/* hv.h
*
* Copyright (C) 1991, 1992, 1993, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2005, 2006, 2007, by Larry Wall and others
+ * 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
Use the funcs in mro.c
*/
-typedef enum {
- MRO_DFS, /* 0 */
- MRO_C3 /* 1 */
-} mro_alg;
+
+/* structure may change, so not public yet */
+struct mro_alg;
struct mro_meta {
AV *mro_linear_dfs; /* cached dfs @ISA linearization */
HV *mro_nextmethod; /* next::method caching */
U32 cache_gen; /* Bumping this invalidates our method cache */
U32 pkg_gen; /* Bumps when local methods/@ISA change */
- mro_alg mro_which; /* which mro alg is in use? */
+ const struct mro_alg *mro_which; /* which mro alg is in use? */
};
/* Subject to change.
struct mro_meta *xhv_mro_meta;
};
+#define _XPVHV_ALLOCATED_HEAD \
+ STRLEN xhv_fill; /* how full xhv_array currently is */ \
+ STRLEN xhv_max /* subscript of last element of xhv_array */
+
+#define _XPVHV_HEAD \
+ union _xnvu xnv_u; \
+ _XPVHV_ALLOCATED_HEAD
+
/* hash structure: */
/* This structure must match the beginning of struct xpvmg in sv.h. */
struct xpvhv {
- union {
- NV xnv_nv; /* numeric value, if any */
- HV * xgv_stash;
- struct {
- U32 xlow;
- U32 xhigh;
- } xpad_cop_seq; /* used by pad.c for cop_sequence */
- struct {
- U32 xbm_previous; /* how many characters in string before rare? */
- U8 xbm_flags;
- U8 xbm_rare; /* rarest character in string */
- } xbm_s; /* fields from PVBM */
- } xnv_u;
- STRLEN xhv_fill; /* how full xhv_array currently is */
- STRLEN xhv_max; /* subscript of last element of xhv_array */
- union {
- IV xivu_iv; /* integer value or pv offset */
- UV xivu_uv;
- void * xivu_p1;
- I32 xivu_i32;
- HEK * xivu_namehek;
- } xiv_u;
- union {
- MAGIC* xmg_magic; /* linked list of magicalness */
- HV* xmg_ourstash; /* Stash for our (when SvPAD_OUR is true) */
- } xmg_u;
- HV* xmg_stash; /* class package */
+ _XPVHV_HEAD;
+ _XPVMG_HEAD;
};
#define xhv_keys xiv_u.xivu_iv
typedef struct {
- STRLEN xhv_fill; /* how full xhv_array currently is */
- STRLEN xhv_max; /* subscript of last element of xhv_array */
- union {
- IV xivu_iv; /* integer value or pv offset */
- UV xivu_uv;
- void * xivu_p1;
- I32 xivu_i32;
- HEK * xivu_namehek;
- } xiv_u;
- union {
- MAGIC* xmg_magic; /* linked list of magicalness */
- HV* xmg_ourstash; /* Stash for our (when SvPAD_OUR is true) */
- } xmg_u;
- HV* xmg_stash; /* class package */
+ _XPVHV_ALLOCATED_HEAD;
+ _XPVMG_HEAD;
} xpvhv_allocated;
+#undef _XPVHV_ALLOCATED_HEAD
+#undef _XPVHV_HEAD
+
/* hash a key */
/* FYI: This is the "One-at-a-Time" algorithm by Bob Jenkins
* from requirements by Colin Plumb.
variable. Remember though, that hash keys in perl are free to contain
embedded nulls, so using C<strlen()> or similar is not a good way to find
the length of hash keys. This is very similar to the C<SvPV()> macro
-described elsewhere in this document.
+described elsewhere in this document. See also C<HeUTF8>.
+
+If you are using C<HePV> to get values to pass to C<newSVpvn()> to create a
+new SV, you should consider using C<newSVhek(HeKEY_hek(he))> as it is more
+efficient.
+
+=for apidoc Am|char*|HeUTF8|HE* he|STRLEN len
+Returns whether the C<char *> value returned by C<HePV> is encoded in UTF-8,
+doing any necessary dereferencing of possibly C<SV*> keys. The value returned
+will be 0 or non-0, not necessarily 1 (or even a value with any low bits set),
+so B<do not> blindly assign this to a C<bool> variable, as C<bool> may be a
+typedef for C<char>.
=for apidoc Am|SV*|HeSVKEY|HE* he
Returns the key as an C<SV*>, or C<NULL> if the hash entry does not
#define HePV(he,lp) ((HeKLEN(he) == HEf_SVKEY) ? \
SvPV(HeKEY_sv(he),lp) : \
((lp = HeKLEN(he)), HeKEY(he)))
+#define HeUTF8(he) ((HeKLEN(he) == HEf_SVKEY) ? \
+ SvUTF8(HeKEY_sv(he)) : \
+ (U32)HeKUTF8(he))
#define HeSVKEY(he) ((HeKEY(he) && \
HeKLEN(he) == HEf_SVKEY) ? \
#define HeSVKEY_force(he) (HeKEY(he) ? \
((HeKLEN(he) == HEf_SVKEY) ? \
HeKEY_sv(he) : \
- sv_2mortal(newSVpvn(HeKEY(he), \
- HeKLEN(he)))) : \
+ newSVpvn_flags(HeKEY(he), \
+ HeKLEN(he), SVs_TEMP)) : \
&PL_sv_undef)
#define HeSVKEY_set(he,sv) ((HeKLEN(he) = HEf_SVKEY), (HeKEY_sv(he) = sv))
hek)
#define hv_store_ent(zlonk, awk, touche, zgruppp) \
- hv_common((zlonk), (awk), NULL, 0, 0, HV_FETCH_ISSTORE, (touche), (zgruppp))
+ ((HE *) hv_common((zlonk), (awk), NULL, 0, 0, HV_FETCH_ISSTORE, \
+ (touche), (zgruppp)))
#define hv_exists_ent(zlonk, awk, zgruppp) \
(hv_common((zlonk), (awk), NULL, 0, 0, HV_FETCH_ISEXISTS, 0, (zgruppp))\
? TRUE : FALSE)
#define hv_fetch_ent(zlonk, awk, touche, zgruppp) \
- hv_common((zlonk), (awk), NULL, 0, 0, ((touche) ? HV_FETCH_LVALUE : 0), \
- NULL, (zgruppp))
+ ((HE *) hv_common((zlonk), (awk), NULL, 0, 0, \
+ ((touche) ? HV_FETCH_LVALUE : 0), NULL, (zgruppp)))
#define hv_delete_ent(zlonk, awk, touche, zgruppp) \
((SV *) hv_common((zlonk), (awk), NULL, 0, 0, (touche) | HV_DELETE, \
NULL, (zgruppp)))
+#define hv_store_flags(urkk, zamm, clunk, thwape, sploosh, eee_yow) \
+ ((SV**) hv_common((urkk), NULL, (zamm), (clunk), (eee_yow), \
+ (HV_FETCH_ISSTORE|HV_FETCH_JUST_SV), (thwape), \
+ (sploosh)))
+
+#define hv_store(urkk, zamm, clunk, thwape, sploosh) \
+ ((SV**) hv_common_key_len((urkk), (zamm), (clunk), \
+ (HV_FETCH_ISSTORE|HV_FETCH_JUST_SV), \
+ (thwape), (sploosh)))
+
+#define hv_exists(urkk, zamm, clunk) \
+ (hv_common_key_len((urkk), (zamm), (clunk), HV_FETCH_ISEXISTS, NULL, 0) \
+ ? TRUE : FALSE)
+
+#define hv_fetch(urkk, zamm, clunk, pam) \
+ ((SV**) hv_common_key_len((urkk), (zamm), (clunk), (pam) \
+ ? (HV_FETCH_JUST_SV | HV_FETCH_LVALUE) \
+ : HV_FETCH_JUST_SV, NULL, 0))
+
+#define hv_delete(urkk, zamm, clunk, pam) \
+ ((SV*) hv_common_key_len((urkk), (zamm), (clunk), \
+ (pam) | HV_DELETE, NULL, 0))
+
/* This refcounted he structure is used for storing the hints used for lexical
pragmas. Without threads, it's basically struct he + refcount.
With threads, life gets more complex as the structure needs to be shared
#define HV_DELETE 0x40
/*
+=for apidoc newHV
+
+Creates a new HV. The reference count is set to 1.
+
+=cut
+*/
+
+#define newHV() ((HV*)newSV_type(SVt_PVHV))
+
+/*
* Local variables:
* c-indentation-style: bsd
* c-basic-offset: 4
projects / p5sagit/p5-mst-13.2.git / blobdiff