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Fix up tests to work around tie $handle
[perl5.git] / gv.h
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a0d0e21e 1/* gv.h
79072805 2 *
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3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
4 * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
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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 *
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9 */
10
11struct gp {
12 SV * gp_sv; /* scalar value */
79072805 13 struct io * gp_io; /* filehandle value */
79072805 14 CV * gp_cv; /* subroutine value */
463ee0b2 15 U32 gp_cvgen; /* generational validity of cached gv_cv */
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16 U32 gp_refcnt; /* how many globs point to this? */
17 HV * gp_hv; /* hash value */
18 AV * gp_av; /* array value */
19 CV * gp_form; /* format value */
20 GV * gp_egv; /* effective gv, if *glob */
79072805 21 line_t gp_line; /* line first declared at (for -w) */
f4890806 22 HEK * gp_file_hek; /* file first declared in (for -w) */
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23};
24
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25#define GvXPVGV(gv) ((XPVGV*)SvANY(gv))
26
a5f75d66 27
e51a6fb1 28#if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__INTEL_COMPILER)
dedf8e73 29# define GvGP(gv) \
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30 (*({GV *const _gvgp = (GV *) (gv); \
31 assert(SvTYPE(_gvgp) == SVt_PVGV || SvTYPE(_gvgp) == SVt_PVLV); \
32 assert(isGV_with_GP(_gvgp)); \
33 &((_gvgp)->sv_u.svu_gp);}))
dedf8e73 34# define GvFLAGS(gv) \
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35 (*({GV *const _gvflags = (GV *) (gv); \
36 assert(SvTYPE(_gvflags) == SVt_PVGV || SvTYPE(_gvflags) == SVt_PVLV); \
37 assert(isGV_with_GP(_gvflags)); \
38 &(GvXPVGV(_gvflags)->xpv_cur);}))
c72c5e99 39# define GvSTASH(gv) \
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40 (*({ GV * const _gvstash = (GV *) (gv); \
41 assert(isGV_with_GP(_gvstash)); \
42 assert(SvTYPE(_gvstash) == SVt_PVGV || SvTYPE(_gvstash) >= SVt_PVLV); \
43 &(GvXPVGV(_gvstash)->xnv_u.xgv_stash); \
c72c5e99 44 }))
acda4c6a 45# define GvNAME_HEK(gv) \
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46 (*({ GV * const _gvname_hek = (GV *) (gv); \
47 assert(isGV_with_GP(_gvname_hek)); \
48 assert(SvTYPE(_gvname_hek) == SVt_PVGV || SvTYPE(_gvname_hek) >= SVt_PVLV); \
49 assert(!SvVALID(_gvname_hek)); \
50 &(GvXPVGV(_gvname_hek)->xiv_u.xivu_namehek); \
acda4c6a 51 }))
1404b487 52# define GvNAME_get(gv) ({ assert(GvNAME_HEK(gv)); (char *)HEK_KEY(GvNAME_HEK(gv)); })
9f616d01 53# define GvNAMELEN_get(gv) ({ assert(GvNAME_HEK(gv)); HEK_LEN(GvNAME_HEK(gv)); })
c72c5e99 54#else
dedf8e73 55# define GvGP(gv) ((gv)->sv_u.svu_gp)
5526b5b3 56# define GvFLAGS(gv) (GvXPVGV(gv)->xpv_cur)
58430790 57# define GvSTASH(gv) (GvXPVGV(gv)->xnv_u.xgv_stash)
274ac62a 58# define GvNAME_HEK(gv) (GvXPVGV(gv)->xiv_u.xivu_namehek)
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59# define GvNAME_get(gv) HEK_KEY(GvNAME_HEK(gv))
60# define GvNAMELEN_get(gv) HEK_LEN(GvNAME_HEK(gv))
c72c5e99 61#endif
dedf8e73 62
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63#define GvNAME(gv) GvNAME_get(gv)
64#define GvNAMELEN(gv) GvNAMELEN_get(gv)
65
08002bbf 66#define GvASSIGN_GENERATION(gv) (0 + ((XPV*) SvANY(gv))->xpv_len)
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67#define GvASSIGN_GENERATION_set(gv,val) \
68 STMT_START { assert(SvTYPE(gv) == SVt_PVGV); \
08002bbf 69 (((XPV*) SvANY(gv))->xpv_len = (val)); } STMT_END
169d2d72 70
954c1994 71/*
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72=head1 GV Functions
73
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74=for apidoc Am|SV*|GvSV|GV* gv
75
76Return the SV from the GV.
77
78=cut
79*/
80
79072805 81#define GvSV(gv) (GvGP(gv)->gp_sv)
c69033f2 82#ifdef PERL_DONT_CREATE_GVSV
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83#define GvSVn(gv) (*(GvGP(gv)->gp_sv ? \
84 &(GvGP(gv)->gp_sv) : \
85 &(GvGP(gv_SVadd(gv))->gp_sv)))
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86#else
87#define GvSVn(gv) GvSV(gv)
88#endif
89
79072805 90#define GvREFCNT(gv) (GvGP(gv)->gp_refcnt)
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91#define GvIO(gv) \
92 ( \
93 (gv) \
94 && ( \
95 SvTYPE((const SV*)(gv)) == SVt_PVGV \
96 || SvTYPE((const SV*)(gv)) == SVt_PVLV \
97 ) \
98 && GvGP(gv) \
99 ? GvIOp(gv) \
100 : NULL \
101 )
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102#define GvIOp(gv) (GvGP(gv)->gp_io)
103#define GvIOn(gv) (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv)))
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104
105#define GvFORM(gv) (GvGP(gv)->gp_form)
106#define GvAV(gv) (GvGP(gv)->gp_av)
44a8e56a 107
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108#define GvAVn(gv) (GvGP(gv)->gp_av ? \
109 GvGP(gv)->gp_av : \
110 GvGP(gv_AVadd(gv))->gp_av)
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111#define GvHV(gv) ((GvGP(gv))->gp_hv)
112
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113#define GvHVn(gv) (GvGP(gv)->gp_hv ? \
114 GvGP(gv)->gp_hv : \
115 GvGP(gv_HVadd(gv))->gp_hv)
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116
117#define GvCV(gv) (GvGP(gv)->gp_cv)
463ee0b2 118#define GvCVGEN(gv) (GvGP(gv)->gp_cvgen)
601f1833 119#define GvCVu(gv) (GvGP(gv)->gp_cvgen ? NULL : GvGP(gv)->gp_cv)
79072805 120
79072805 121#define GvLINE(gv) (GvGP(gv)->gp_line)
f4890806 122#define GvFILE_HEK(gv) (GvGP(gv)->gp_file_hek)
5be41be4 123#define GvFILE(gv) (GvFILE_HEK(gv) ? HEK_KEY(GvFILE_HEK(gv)) : NULL)
57843af0 124#define GvFILEGV(gv) (gv_fetchfile(GvFILE(gv)))
79072805 125
79072805 126#define GvEGV(gv) (GvGP(gv)->gp_egv)
099be4f1 127#define GvEGVx(gv) (isGV_with_GP(gv) ? GvEGV(gv) : NULL)
748a9306 128#define GvENAME(gv) GvNAME(GvEGV(gv) ? GvEGV(gv) : gv)
748a9306 129#define GvESTASH(gv) GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv)
79072805 130
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131#define GVf_INTRO 0x01
132#define GVf_MULTI 0x02
133#define GVf_ASSUMECV 0x04
743e66e6 134#define GVf_IN_PAD 0x08
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135#define GVf_IMPORTED 0xF0
136#define GVf_IMPORTED_SV 0x10
137#define GVf_IMPORTED_AV 0x20
138#define GVf_IMPORTED_HV 0x40
139#define GVf_IMPORTED_CV 0x80
140
141#define GvINTRO(gv) (GvFLAGS(gv) & GVf_INTRO)
142#define GvINTRO_on(gv) (GvFLAGS(gv) |= GVf_INTRO)
143#define GvINTRO_off(gv) (GvFLAGS(gv) &= ~GVf_INTRO)
144
145#define GvMULTI(gv) (GvFLAGS(gv) & GVf_MULTI)
146#define GvMULTI_on(gv) (GvFLAGS(gv) |= GVf_MULTI)
147#define GvMULTI_off(gv) (GvFLAGS(gv) &= ~GVf_MULTI)
148
149#define GvASSUMECV(gv) (GvFLAGS(gv) & GVf_ASSUMECV)
150#define GvASSUMECV_on(gv) (GvFLAGS(gv) |= GVf_ASSUMECV)
151#define GvASSUMECV_off(gv) (GvFLAGS(gv) &= ~GVf_ASSUMECV)
152
153#define GvIMPORTED(gv) (GvFLAGS(gv) & GVf_IMPORTED)
154#define GvIMPORTED_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED)
155#define GvIMPORTED_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED)
156
157#define GvIMPORTED_SV(gv) (GvFLAGS(gv) & GVf_IMPORTED_SV)
158#define GvIMPORTED_SV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_SV)
159#define GvIMPORTED_SV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_SV)
160
161#define GvIMPORTED_AV(gv) (GvFLAGS(gv) & GVf_IMPORTED_AV)
162#define GvIMPORTED_AV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_AV)
163#define GvIMPORTED_AV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_AV)
164
165#define GvIMPORTED_HV(gv) (GvFLAGS(gv) & GVf_IMPORTED_HV)
166#define GvIMPORTED_HV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_HV)
167#define GvIMPORTED_HV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_HV)
168
169#define GvIMPORTED_CV(gv) (GvFLAGS(gv) & GVf_IMPORTED_CV)
170#define GvIMPORTED_CV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_CV)
171#define GvIMPORTED_CV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_CV)
172
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173#define GvIN_PAD(gv) (GvFLAGS(gv) & GVf_IN_PAD)
174#define GvIN_PAD_on(gv) (GvFLAGS(gv) |= GVf_IN_PAD)
175#define GvIN_PAD_off(gv) (GvFLAGS(gv) &= ~GVf_IN_PAD)
176
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177#ifndef PERL_CORE
178# define Nullgv Null(GV*)
179#endif
79072805 180
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181#define DM_RUID 0x001
182#define DM_EUID 0x002
6ca8229d 183#define DM_UID (DM_RUID|DM_EUID)
354b0578 184#define DM_ARRAY_ISA 0x004
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185#define DM_RGID 0x010
186#define DM_EGID 0x020
6ca8229d 187#define DM_GID (DM_RGID|DM_EGID)
613a9ec2 188#define DM_DELAY 0x100
79072805 189
0f303493 190/*
864dbfa3 191 * symbol creation flags, for use in gv_fetchpv() and get_*v()
0f303493 192 */
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193#define GV_ADD 0x01 /* add, if symbol not already there
194 For gv_name_set, adding a HEK for the first
195 time, so don't try to free what's there. */
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196#define GV_ADDMULTI 0x02 /* add, pretending it has been added already */
197#define GV_ADDWARN 0x04 /* add, but warn if symbol wasn't already there */
198#define GV_ADDINEVAL 0x08 /* add, as though we're doing so within an eval */
199#define GV_NOINIT 0x10 /* add, but don't init symbol, if type != PVGV */
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200/* This is used by toke.c to avoid turing placeholder constants in the symbol
201 table into full PVGVs with attached constant subroutines. */
202#define GV_NOADD_NOINIT 0x20 /* Don't add the symbol if it's not there.
203 Don't init it if it is there but ! PVGV */
e26df76a 204#define GV_NOEXPAND 0x40 /* Don't expand SvOK() entries to PVGV */
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205#define GV_NOTQUAL 0x80 /* A plain symbol name, not qualified with a
206 package (so skip checks for :: and ') */
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207#define GV_AUTOLOAD 0x100 /* gv_fetchmethod_flags() should AUTOLOAD */
208#define GV_CROAK 0x200 /* gv_fetchmethod_flags() should croak */
add2581e 209
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210/* SVf_UTF8 (more accurately the return value from SvUTF8) is also valid
211 as a flag to gv_fetch_pvn_flags, so ensure it lies outside this range.
212*/
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213
214#define GV_NOADD_MASK (SVf_UTF8|GV_NOADD_NOINIT|GV_NOEXPAND|GV_NOTQUAL)
215/* The bit flags that don't cause gv_fetchpv() to add a symbol if not found */
216
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217#define gv_fullname3(sv,gv,prefix) gv_fullname4(sv,gv,prefix,TRUE)
218#define gv_efullname3(sv,gv,prefix) gv_efullname4(sv,gv,prefix,TRUE)
887986eb 219#define gv_fetchmethod(stash, name) gv_fetchmethod_autoload(stash, name, TRUE)
f4890806 220
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221#define gv_AVadd(gv) gv_add_by_type((gv), SVt_PVAV)
222#define gv_HVadd(gv) gv_add_by_type((gv), SVt_PVHV)
bb85b28a 223#define gv_IOadd(gv) gv_add_by_type((gv), SVt_PVIO)
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224#define gv_SVadd(gv) gv_add_by_type((gv), SVt_NULL)
225
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226/*
227 * Local variables:
228 * c-indentation-style: bsd
229 * c-basic-offset: 4
230 * indent-tabs-mode: t
231 * End:
232 *
233 * ex: set ts=8 sts=4 sw=4 noet:
234 */