3 * Copyright (C) 1991, 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000,
4 * 2001, 2002, 2005, 2006, 2007, 2008, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
11 #define _XPVAV_ALLOCATED_HEAD \
12 SSize_t xav_fill; /* Index of last element present */ \
13 SSize_t xav_max /* max index for which array has space */
25 _XPVAV_ALLOCATED_HEAD;
29 #undef _XPVAV_ALLOCATED_HEAD
33 #define xav_alloc xiv_u.xivu_p1
36 /* SVpav_REAL is set for all AVs whose xav_array contents are refcounted.
37 * Some things like "@_" and the scratchpad list do not set this, to
38 * indicate that they are cheating (for efficiency) by not refcounting
41 * SVpav_REIFY is only meaningful on such "fake" AVs (i.e. where SVpav_REAL
42 * is not set). It indicates that the fake AV is capable of becoming
43 * real if the array needs to be modified in some way. Functions that
44 * modify fake AVs check both flags to call av_reify() as appropriate.
46 * Note that the Perl stack and @DB::args have neither flag set. (Thus,
47 * items that go on the stack are never refcounted.)
49 * These internal details are subject to change any time. AV
50 * manipulations external to perl should not care about any of this.
57 =for apidoc AmU||Nullav
60 (deprecated - use C<(AV *)NULL> instead)
62 =head1 Array Manipulation Functions
64 =for apidoc Am|int|AvFILL|AV* av
65 Same as C<av_len()>. Deprecated, use C<av_len()> instead.
71 # define Nullav Null(AV*)
74 #define AvARRAY(av) ((av)->sv_u.svu_array)
75 #define AvALLOC(av) (*((SV***)&((XPVAV*) SvANY(av))->xav_alloc))
76 #define AvMAX(av) ((XPVAV*) SvANY(av))->xav_max
77 #define AvFILLp(av) ((XPVAV*) SvANY(av))->xav_fill
78 #define AvARYLEN(av) (*Perl_av_arylen_p(aTHX_ MUTABLE_AV(av)))
80 #define AvREAL(av) (SvFLAGS(av) & SVpav_REAL)
81 #define AvREAL_on(av) (SvFLAGS(av) |= SVpav_REAL)
82 #define AvREAL_off(av) (SvFLAGS(av) &= ~SVpav_REAL)
83 #define AvREAL_only(av) (AvREIFY_off(av), SvFLAGS(av) |= SVpav_REAL)
84 #define AvREIFY(av) (SvFLAGS(av) & SVpav_REIFY)
85 #define AvREIFY_on(av) (SvFLAGS(av) |= SVpav_REIFY)
86 #define AvREIFY_off(av) (SvFLAGS(av) &= ~SVpav_REIFY)
87 #define AvREIFY_only(av) (AvREAL_off(av), SvFLAGS(av) |= SVpav_REIFY)
89 #define AvREALISH(av) (SvFLAGS(av) & (SVpav_REAL|SVpav_REIFY))
91 #define AvFILL(av) ((SvRMAGICAL((const SV *) (av))) \
92 ? mg_size(MUTABLE_SV(av)) : AvFILLp(av))
94 #define NEGATIVE_INDICES_VAR "NEGATIVE_INDICES"
99 Creates a new AV. The reference count is set to 1.
104 #define newAV() MUTABLE_AV(newSV_type(SVt_PVAV))
108 * c-indentation-style: bsd
110 * indent-tabs-mode: t
113 * ex: set ts=8 sts=4 sw=4 noet: