source: vendor/perl/5.8.8/gv.h

Last change on this file was 3181, checked in by bird, 18 years ago

perl 5.8.8
File size: 5.3 KB
RevLine 
[3181]1/* gv.h
2 *
3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
5 *
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.
8 *
9 */
10
11struct gp {
12 SV * gp_sv; /* scalar value */
13 U32 gp_refcnt; /* how many globs point to this? */
14 struct io * gp_io; /* filehandle value */
15 CV * gp_form; /* format value */
16 AV * gp_av; /* array value */
17 HV * gp_hv; /* hash value */
18 GV * gp_egv; /* effective gv, if *glob */
19 CV * gp_cv; /* subroutine value */
20 U32 gp_cvgen; /* generational validity of cached gv_cv */
21 U32 gp_flags; /* XXX unused */
22 line_t gp_line; /* line first declared at (for -w) */
23 char * gp_file; /* file first declared in (for -w) */
24};
25
26#define GvXPVGV(gv) ((XPVGV*)SvANY(gv))
27
28#define GvGP(gv) (GvXPVGV(gv)->xgv_gp)
29#define GvNAME(gv) (GvXPVGV(gv)->xgv_name)
30#define GvNAMELEN(gv) (GvXPVGV(gv)->xgv_namelen)
31#define GvSTASH(gv) (GvXPVGV(gv)->xgv_stash)
32#define GvFLAGS(gv) (GvXPVGV(gv)->xgv_flags)
33
34/*
35=head1 GV Functions
36
37=for apidoc Am|SV*|GvSV|GV* gv
38
39Return the SV from the GV.
40
41=cut
42*/
43
44#define GvSV(gv) (GvGP(gv)->gp_sv)
45#ifdef PERL_DONT_CREATE_GVSV
46#define GvSVn(gv) (*(GvGP(gv)->gp_sv ? \
47 &(GvGP(gv)->gp_sv) : \
48 &(GvGP(gv_SVadd(gv))->gp_sv)))
49#else
50#define GvSVn(gv) GvSV(gv)
51#endif
52
53#define GvREFCNT(gv) (GvGP(gv)->gp_refcnt)
54#define GvIO(gv) ((gv) && SvTYPE((SV*)gv) == SVt_PVGV && GvGP(gv) ? GvIOp(gv) : 0)
55#define GvIOp(gv) (GvGP(gv)->gp_io)
56#define GvIOn(gv) (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv)))
57
58#define GvFORM(gv) (GvGP(gv)->gp_form)
59#define GvAV(gv) (GvGP(gv)->gp_av)
60
61/* This macro is deprecated. Do not use! */
62#define GvREFCNT_inc(gv) ((GV*)SvREFCNT_inc(gv)) /* DO NOT USE */
63
64#define GvAVn(gv) (GvGP(gv)->gp_av ? \
65 GvGP(gv)->gp_av : \
66 GvGP(gv_AVadd(gv))->gp_av)
67#define GvHV(gv) ((GvGP(gv))->gp_hv)
68
69#define GvHVn(gv) (GvGP(gv)->gp_hv ? \
70 GvGP(gv)->gp_hv : \
71 GvGP(gv_HVadd(gv))->gp_hv)
72
73#define GvCV(gv) (GvGP(gv)->gp_cv)
74#define GvCVGEN(gv) (GvGP(gv)->gp_cvgen)
75#define GvCVu(gv) (GvGP(gv)->gp_cvgen ? Nullcv : GvGP(gv)->gp_cv)
76
77#define GvGPFLAGS(gv) (GvGP(gv)->gp_flags)
78
79#define GvLINE(gv) (GvGP(gv)->gp_line)
80#define GvFILE(gv) (GvGP(gv)->gp_file)
81#define GvFILEGV(gv) (gv_fetchfile(GvFILE(gv)))
82
83#define GvEGV(gv) (GvGP(gv)->gp_egv)
84#define GvENAME(gv) GvNAME(GvEGV(gv) ? GvEGV(gv) : gv)
85#define GvESTASH(gv) GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv)
86
87#define GVf_INTRO 0x01
88#define GVf_MULTI 0x02
89#define GVf_ASSUMECV 0x04
90#define GVf_IN_PAD 0x08
91#define GVf_IMPORTED 0xF0
92#define GVf_IMPORTED_SV 0x10
93#define GVf_IMPORTED_AV 0x20
94#define GVf_IMPORTED_HV 0x40
95#define GVf_IMPORTED_CV 0x80
96
97#define GvINTRO(gv) (GvFLAGS(gv) & GVf_INTRO)
98#define GvINTRO_on(gv) (GvFLAGS(gv) |= GVf_INTRO)
99#define GvINTRO_off(gv) (GvFLAGS(gv) &= ~GVf_INTRO)
100
101#define GvMULTI(gv) (GvFLAGS(gv) & GVf_MULTI)
102#define GvMULTI_on(gv) (GvFLAGS(gv) |= GVf_MULTI)
103#define GvMULTI_off(gv) (GvFLAGS(gv) &= ~GVf_MULTI)
104
105#define GvASSUMECV(gv) (GvFLAGS(gv) & GVf_ASSUMECV)
106#define GvASSUMECV_on(gv) (GvFLAGS(gv) |= GVf_ASSUMECV)
107#define GvASSUMECV_off(gv) (GvFLAGS(gv) &= ~GVf_ASSUMECV)
108
109#define GvIMPORTED(gv) (GvFLAGS(gv) & GVf_IMPORTED)
110#define GvIMPORTED_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED)
111#define GvIMPORTED_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED)
112
113#define GvIMPORTED_SV(gv) (GvFLAGS(gv) & GVf_IMPORTED_SV)
114#define GvIMPORTED_SV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_SV)
115#define GvIMPORTED_SV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_SV)
116
117#define GvIMPORTED_AV(gv) (GvFLAGS(gv) & GVf_IMPORTED_AV)
118#define GvIMPORTED_AV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_AV)
119#define GvIMPORTED_AV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_AV)
120
121#define GvIMPORTED_HV(gv) (GvFLAGS(gv) & GVf_IMPORTED_HV)
122#define GvIMPORTED_HV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_HV)
123#define GvIMPORTED_HV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_HV)
124
125#define GvIMPORTED_CV(gv) (GvFLAGS(gv) & GVf_IMPORTED_CV)
126#define GvIMPORTED_CV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_CV)
127#define GvIMPORTED_CV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_CV)
128
129#define GvIN_PAD(gv) (GvFLAGS(gv) & GVf_IN_PAD)
130#define GvIN_PAD_on(gv) (GvFLAGS(gv) |= GVf_IN_PAD)
131#define GvIN_PAD_off(gv) (GvFLAGS(gv) &= ~GVf_IN_PAD)
132
133/* XXX: all GvFLAGS options are used, borrowing GvGPFLAGS for the moment */
134
135#define GVf_UNIQUE 0x0001
136#define GvUNIQUE(gv) (GvGP(gv) && (GvGPFLAGS(gv) & GVf_UNIQUE))
137#define GvUNIQUE_on(gv) (GvGPFLAGS(gv) |= GVf_UNIQUE)
138#define GvUNIQUE_off(gv) (GvGPFLAGS(gv) &= ~GVf_UNIQUE)
139
140#ifdef USE_ITHREADS
141#define GV_UNIQUE_CHECK
142#else
143#undef GV_UNIQUE_CHECK
144#endif
145
146#define Nullgv Null(GV*)
147
148#define DM_UID 0x003
149#define DM_RUID 0x001
150#define DM_EUID 0x002
151#define DM_GID 0x030
152#define DM_RGID 0x010
153#define DM_EGID 0x020
154#define DM_DELAY 0x100
155
156/*
157 * symbol creation flags, for use in gv_fetchpv() and get_*v()
158 */
159#define GV_ADD 0x01 /* add, if symbol not already there */
160#define GV_ADDMULTI 0x02 /* add, pretending it has been added already */
161#define GV_ADDWARN 0x04 /* add, but warn if symbol wasn't already there */
162#define GV_ADDINEVAL 0x08 /* add, as though we're doing so within an eval */
163#define GV_NOINIT 0x10 /* add, but don't init symbol, if type != PVGV */
164
165#define gv_fullname3(sv,gv,prefix) gv_fullname4(sv,gv,prefix,TRUE)
166#define gv_efullname3(sv,gv,prefix) gv_efullname4(sv,gv,prefix,TRUE)
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