108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
|
/* av.h
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
struct xpvav {
|
||
|
|
HV* xmg_stash; /* class package */
|
||
|
|
union _xmgu xmg_u;
|
||
|
|
SSize_t xav_fill; /* Index of last element present */
|
||
|
|
SSize_t xav_max; /* max index for which array has space */
|
||
|
|
SV** xav_alloc; /* pointer to beginning of C array of SVs */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* SV* xav_arylen; */
|
||
|
|
|
||
|
|
/* 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.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
* manipulations external to perl should not care about any of this.
|
||
|
|
* GSAR 1999-09-10
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
=head1 Handy Values
|
||
|
|
|
||
|
|
=for apidoc AmU||Nullav
|
||
|
|
Null AV pointer.
|
||
|
|
|
||
|
|
(deprecated - use C<(AV *)NULL> instead)
|
||
|
|
|
||
|
|
=head1 Array Manipulation Functions
|
||
|
|
|
||
|
|
=for apidoc Am|int|AvFILL|AV* av
|
||
|
|
Same as C<av_top_index()> or C<av_tindex()>.
|
||
|
|
|
||
|
|
=for apidoc Am|int|av_tindex|AV* av
|
||
|
|
Same as C<av_top_index()>.
|
||
|
|
|
||
|
|
=cut
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef PERL_CORE
|
||
|
|
# define Nullav Null(AV*)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define AvARRAY(av) ((av)->sv_u.svu_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) (*Perl_av_arylen_p(aTHX_ MUTABLE_AV(av)))
|
||
|
|
|
||
|
|
#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) (SvFLAGS(av) & (SVpav_REAL|SVpav_REIFY))
|
||
|
|
|
||
|
|
#define AvFILL(av) ((SvRMAGICAL((const SV *) (av))) \
|
||
|
|
? mg_size(MUTABLE_SV(av)) : AvFILLp(av))
|
||
|
|
#define av_tindex(av) av_top_index(av)
|
||
|
|
|
||
|
|
/* Note that it doesn't make sense to do this:
|
||
|
|
* SvGETMAGIC(av); IV x = av_tindex_nomg(av);
|
||
|
|
*/
|
||
|
|
# define av_top_index_skip_len_mg(av) \
|
||
|
|
(__ASSERT_(SvTYPE(av) == SVt_PVAV) AvFILLp(av))
|
||
|
|
# define av_tindex_skip_len_mg(av) av_top_index_skip_len_mg(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))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ex: set ts=8 sts=4 sw=4 et:
|
||
|
|
*/
|