X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=av.h;h=06ecc7a656027f1ffb90a53081c5ae49ffd9734d;hb=700f8fa57dd2ddf62360a5b615a799f680e4bf19;hp=8f130d63c007ca6c4b7ea4f5e1e8c3186d1b5d27;hpb=bc89e66f06f2a92e37ea7c110f66788fcfbe6847;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/av.h b/av.h
index 8f130d6..06ecc7a 100644
--- a/av.h
+++ b/av.h
@@ -1,6 +1,7 @@
 /*    av.h
  *
- *    Copyright (c) 1991-2001, Larry Wall
+ *    Copyright (C) 1991, 1992, 1993, 1995, 1996, 1997, 1998, 1999,
+ *    2000, 2001, 2002, 2005, 2006, 2007, 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.
@@ -8,26 +9,62 @@
  */
 
 struct xpvav {
-    char*	xav_array;      /* pointer to first array element */
+    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;
     SSize_t	xav_fill;       /* Index of last element present */
     SSize_t	xav_max;        /* max index for which array has space */
-    IV		xof_off;	/* ptr is incremented by offset */
-    NV		xnv_nv;		/* numeric value, if any */
-    MAGIC*	xmg_magic;	/* magic for scalar 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 */
-
-    SV**	xav_alloc;	/* pointer to malloced string */
-    SV*		xav_arylen;
-    U8		xav_flags;
 };
 
+typedef struct {
+    SSize_t	xav_fill;       /* Index of last element present */
+    SSize_t	xav_max;        /* max index for which array has space */
+    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 */
+} xpvav_allocated;
+
+/* SV**	xav_alloc; */
+#define xav_alloc xiv_u.xivu_p1
+/* SV*	xav_arylen; */
 
-/* AVf_REAL is set for all AVs whose xav_array contents are refcounted.
+/* SVpav_REAL is set for all AVs whose xav_array contents are refcounted.
  * Some things like "@_" and the scratchpad list do not set this, to
  * indicate that they are cheating (for efficiency) by not refcounting
  * the AV's contents.
  * 
- * AVf_REIFY is only meaningful on such "fake" AVs (i.e. where AVf_REAL
+ * SVpav_REIFY is only meaningful on such "fake" AVs (i.e. where SVpav_REAL
  * is not set).  It indicates that the fake AV is capable of becoming
  * real if the array needs to be modified in some way.  Functions that
  * modify fake AVs check both flags to call av_reify() as appropriate.
@@ -39,16 +76,15 @@ struct xpvav {
  * manipulations external to perl should not care about any of this.
  * GSAR 1999-09-10
  */
-#define AVf_REAL 1	/* free old entries */
-#define AVf_REIFY 2	/* can become real */
-
-/* XXX this is not used anywhere */
-#define AVf_REUSED 4	/* got undeffed--don't turn old memory into SVs now */
 
 /*
+=head1 Handy Values
+
 =for apidoc AmU||Nullav
 Null AV pointer.
 
+=head1 Array Manipulation Functions
+
 =for apidoc Am|int|AvFILL|AV* av
 Same as C<av_len()>.  Deprecated, use C<av_len()> instead.
 
@@ -57,25 +93,34 @@ Same as C<av_len()>.  Deprecated, use C<av_len()> instead.
 
 #define Nullav Null(AV*)
 
-#define AvARRAY(av)	((SV**)((XPVAV*)  SvANY(av))->xav_array)
-#define AvALLOC(av)	((XPVAV*)  SvANY(av))->xav_alloc
+#define AvARRAY(av)	((av)->sv_u.svu_array)
+#define AvALLOC(av)	(*((SV***)&((XPVAV*)  SvANY(av))->xav_alloc))
 #define AvMAX(av)	((XPVAV*)  SvANY(av))->xav_max
 #define AvFILLp(av)	((XPVAV*)  SvANY(av))->xav_fill
-#define AvARYLEN(av)	((XPVAV*)  SvANY(av))->xav_arylen
-#define AvFLAGS(av)	((XPVAV*)  SvANY(av))->xav_flags
+#define AvARYLEN(av)	(*Perl_av_arylen_p(aTHX_ (AV*)av))
 
-#define AvREAL(av)	(AvFLAGS(av) & AVf_REAL)
-#define AvREAL_on(av)	(AvFLAGS(av) |= AVf_REAL)
-#define AvREAL_off(av)	(AvFLAGS(av) &= ~AVf_REAL)
-#define AvREIFY(av)	(AvFLAGS(av) & AVf_REIFY)
-#define AvREIFY_on(av)	(AvFLAGS(av) |= AVf_REIFY)
-#define AvREIFY_off(av)	(AvFLAGS(av) &= ~AVf_REIFY)
-#define AvREUSED(av)	(AvFLAGS(av) & AVf_REUSED)
-#define AvREUSED_on(av)	(AvFLAGS(av) |= AVf_REUSED)
-#define AvREUSED_off(av) (AvFLAGS(av) &= ~AVf_REUSED)
+#define AvREAL(av)	(SvFLAGS(av) & SVpav_REAL)
+#define AvREAL_on(av)	(SvFLAGS(av) |= SVpav_REAL)
+#define AvREAL_off(av)	(SvFLAGS(av) &= ~SVpav_REAL)
+#define AvREAL_only(av)	(AvREIFY_off(av), SvFLAGS(av) |= SVpav_REAL)
+#define AvREIFY(av)	(SvFLAGS(av) & SVpav_REIFY)
+#define AvREIFY_on(av)	(SvFLAGS(av) |= SVpav_REIFY)
+#define AvREIFY_off(av)	(SvFLAGS(av) &= ~SVpav_REIFY)
+#define AvREIFY_only(av)	(AvREAL_off(av), SvFLAGS(av) |= SVpav_REIFY)
 
-#define AvREALISH(av)	(AvFLAGS(av) & (AVf_REAL|AVf_REIFY))
+#define AvREALISH(av)	(SvFLAGS(av) & (SVpav_REAL|SVpav_REIFY))
                                           
 #define AvFILL(av)	((SvRMAGICAL((SV *) (av))) \
 			  ? mg_size((SV *) av) : AvFILLp(av))
 
+#define NEGATIVE_INDICES_VAR "NEGATIVE_INDICES"
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */