X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/8eeaf79a35f94bcc9187bdbe4d3d43dc65f8a234..0a2ae3b5a5d575d6de55759981b41cdb8431accd:/av.h

diff --git a/av.h b/av.h
index 3dfd39e..35c921f 100644
--- a/av.h
+++ b/av.h
@@ -1,7 +1,7 @@
 /*    av.h
  *
- *    Copyright (C) 1991, 1992, 1993, 1995, 1996, 1997, 1998, 1999,
- *    2000, 2001, 2002, 2005, by Larry Wall and others
+ *    Copyright (C) 1991, 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000,
+ *    2001, 2002, 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.
@@ -9,58 +9,13 @@
  */
 
 struct xpvav {
-    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 */
-    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 */
-};
-
-#if 0
-typedef struct xpvav xpvav_allocated;
-#else
-typedef struct {
+    union _xmgu	xmg_u;
     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;
-#endif
+    SV**	xav_alloc;	/* pointer to beginning of C array of SVs */
+};
 
-/* SV**	xav_alloc; */
-#define xav_alloc xiv_u.xivu_p1
 /* SV*	xav_arylen; */
 
 /* SVpav_REAL is set for all AVs whose xav_array contents are refcounted.
@@ -73,7 +28,7 @@ typedef struct {
  * 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.
  *
- * Note that the Perl stack and @DB::args have neither flag set. (Thus,
+ * Note that the Perl stack has neither flag set. (Thus,
  * items that go on the stack are never refcounted.)
  *
  * These internal details are subject to change any time.  AV
@@ -87,6 +42,8 @@ typedef struct {
 =for apidoc AmU||Nullav
 Null AV pointer.
 
+(deprecated - use C<(AV *)NULL> instead)
+
 =head1 Array Manipulation Functions
 
 =for apidoc Am|int|AvFILL|AV* av
@@ -95,13 +52,15 @@ Same as C<av_len()>.  Deprecated, use C<av_len()> instead.
 =cut
 */
 
-#define Nullav Null(AV*)
+#ifndef PERL_CORE
+#  define Nullav Null(AV*)
+#endif
 
 #define AvARRAY(av)	((av)->sv_u.svu_array)
-#define AvALLOC(av)	(*((SV***)&((XPVAV*)  SvANY(av))->xav_alloc))
+#define AvALLOC(av)	((XPVAV*)  SvANY(av))->xav_alloc
 #define AvMAX(av)	((XPVAV*)  SvANY(av))->xav_max
 #define AvFILLp(av)	((XPVAV*)  SvANY(av))->xav_fill
-#define AvARYLEN(av)	(*Perl_av_arylen_p(aTHX_ (AV*)av))
+#define AvARYLEN(av)	(*Perl_av_arylen_p(aTHX_ MUTABLE_AV(av)))
 
 #define AvREAL(av)	(SvFLAGS(av) & SVpav_REAL)
 #define AvREAL_on(av)	(SvFLAGS(av) |= SVpav_REAL)
@@ -114,17 +73,29 @@ Same as C<av_len()>.  Deprecated, use C<av_len()> instead.
 
 #define AvREALISH(av)	(SvFLAGS(av) & (SVpav_REAL|SVpav_REIFY))
                                           
-#define AvFILL(av)	((SvRMAGICAL((SV *) (av))) \
-			  ? mg_size((SV *) av) : AvFILLp(av))
+#define AvFILL(av)	((SvRMAGICAL((const SV *) (av))) \
+			 ? mg_size(MUTABLE_SV(av)) : AvFILLp(av))
 
 #define NEGATIVE_INDICES_VAR "NEGATIVE_INDICES"
 
 /*
+=for apidoc newAV
+
+Creates a new AV.  The reference count is set to 1.
+
+Perl equivalent: C<my @array;>.
+
+=cut
+*/
+
+#define newAV()	MUTABLE_AV(newSV_type(SVt_PVAV))
+
+/*
  * Local variables:
  * c-indentation-style: bsd
  * c-basic-offset: 4
- * indent-tabs-mode: t
+ * indent-tabs-mode: nil
  * End:
  *
- * ex: set ts=8 sts=4 sw=4 noet:
+ * ex: set ts=8 sts=4 sw=4 et:
  */