blob: 94871bfbce89f6974e59b6dd69338914e7156b8b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/* av.h
*
* Copyright (c) 1991-2003, 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.
*
*/
struct xpvav {
char* xav_array; /* pointer to first array element */
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 */
HV* xmg_stash; /* class package */
SV** xav_alloc; /* pointer to beginning of C array of SVs */
SV* xav_arylen;
U8 xav_flags;
};
/* AVf_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
* 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.
*
* Note that the Perl stack and @DB::args have neither flag set. (Thus,
* items that go on the stack are never refcounted.)
*
* These internal details are subject to change any time. AV
* 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.
=cut
*/
#define Nullav Null(AV*)
#define AvARRAY(av) ((SV**)((XPVAV*) SvANY(av))->xav_array)
#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) ((XPVAV*) SvANY(av))->xav_arylen
#define AvFLAGS(av) ((XPVAV*) SvANY(av))->xav_flags
#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 AvREALISH(av) (AvFLAGS(av) & (AVf_REAL|AVf_REIFY))
#define AvFILL(av) ((SvRMAGICAL((SV *) (av))) \
? mg_size((SV *) av) : AvFILLp(av))
#define NEGATIVE_INDICES_VAR "NEGATIVE_INDICES"
|
