From eeacafe7910fb1a4f74af72f94a32acf464b6319 Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <millert@cvs.openbsd.org>
Date: Sun, 30 Nov 1997 07:49:45 +0000
Subject: perl 5.004_04

---
 gnu/usr.bin/perl/hv.h | 67 ++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 63 insertions(+), 4 deletions(-)

(limited to 'gnu/usr.bin/perl/hv.h')

diff --git a/gnu/usr.bin/perl/hv.h b/gnu/usr.bin/perl/hv.h
index 49703632b86..20af4eab578 100644
--- a/gnu/usr.bin/perl/hv.h
+++ b/gnu/usr.bin/perl/hv.h
@@ -1,6 +1,6 @@
 /*    hv.h
  *
- *    Copyright (c) 1991-1994, Larry Wall
+ *    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.
@@ -8,13 +8,18 @@
  */
 
 typedef struct he HE;
+typedef struct hek HEK;
 
 struct he {
     HE		*hent_next;
-    char	*hent_key;
+    HEK		*hent_hek;
     SV		*hent_val;
-    U32		hent_hash;
-    I32		hent_klen;
+};
+
+struct hek {
+    U32		hek_hash;
+    I32		hek_len;
+    char	hek_key[1];
 };
 
 struct xpvhv {
@@ -32,6 +37,21 @@ struct xpvhv {
     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
@@ -42,6 +62,14 @@ struct xpvhv {
 #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: */
@@ -58,3 +86,34 @@ struct xpvhv {
 */
 
 #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)))) :	\
+				 &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
-- 
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