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gv.c: Added gv_init_(sv|pv|pvn), renamed gv_init_sv as gv_init_svtype.
[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) \
c43ae56f 30 (0+(*({GV *const _gvgp = (GV *) (gv); \
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31 assert(SvTYPE(_gvgp) == SVt_PVGV || SvTYPE(_gvgp) == SVt_PVLV); \
32 assert(isGV_with_GP(_gvgp)); \
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33 &((_gvgp)->sv_u.svu_gp);})))
34# define GvGP_set(gv,gp) \
35 {GV *const _gvgp = (GV *) (gv); \
36 assert(SvTYPE(_gvgp) == SVt_PVGV || SvTYPE(_gvgp) == SVt_PVLV); \
37 assert(isGV_with_GP(_gvgp)); \
38 (_gvgp)->sv_u.svu_gp = (gp); }
dedf8e73 39# define GvFLAGS(gv) \
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40 (*({GV *const _gvflags = (GV *) (gv); \
41 assert(SvTYPE(_gvflags) == SVt_PVGV || SvTYPE(_gvflags) == SVt_PVLV); \
42 assert(isGV_with_GP(_gvflags)); \
43 &(GvXPVGV(_gvflags)->xpv_cur);}))
c72c5e99 44# define GvSTASH(gv) \
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45 (*({ GV * const _gvstash = (GV *) (gv); \
46 assert(isGV_with_GP(_gvstash)); \
47 assert(SvTYPE(_gvstash) == SVt_PVGV || SvTYPE(_gvstash) >= SVt_PVLV); \
48 &(GvXPVGV(_gvstash)->xnv_u.xgv_stash); \
c72c5e99 49 }))
acda4c6a 50# define GvNAME_HEK(gv) \
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51 (*({ GV * const _gvname_hek = (GV *) (gv); \
52 assert(isGV_with_GP(_gvname_hek)); \
53 assert(SvTYPE(_gvname_hek) == SVt_PVGV || SvTYPE(_gvname_hek) >= SVt_PVLV); \
54 assert(!SvVALID(_gvname_hek)); \
55 &(GvXPVGV(_gvname_hek)->xiv_u.xivu_namehek); \
acda4c6a 56 }))
1404b487 57# define GvNAME_get(gv) ({ assert(GvNAME_HEK(gv)); (char *)HEK_KEY(GvNAME_HEK(gv)); })
9f616d01 58# define GvNAMELEN_get(gv) ({ assert(GvNAME_HEK(gv)); HEK_LEN(GvNAME_HEK(gv)); })
f2462604 59# define GvNAMEUTF8_get(gv) ({ assert(GvNAME_HEK(gv)); HEK_UTF8(GvNAME_HEK(gv)); })
c72c5e99 60#else
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61# define GvGP(gv) (0+(gv)->sv_u.svu_gp)
62# define GvGP_set(gv,gp) ((gv)->sv_u.svu_gp = (gp))
5526b5b3 63# define GvFLAGS(gv) (GvXPVGV(gv)->xpv_cur)
58430790 64# define GvSTASH(gv) (GvXPVGV(gv)->xnv_u.xgv_stash)
274ac62a 65# define GvNAME_HEK(gv) (GvXPVGV(gv)->xiv_u.xivu_namehek)
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66# define GvNAME_get(gv) HEK_KEY(GvNAME_HEK(gv))
67# define GvNAMELEN_get(gv) HEK_LEN(GvNAME_HEK(gv))
f2462604 68# define GvNAMEUTF8_get(gv) HEK_UTF8(GvNAME_HEK(gv))
c72c5e99 69#endif
dedf8e73 70
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71#define GvNAME(gv) GvNAME_get(gv)
72#define GvNAMELEN(gv) GvNAMELEN_get(gv)
f2462604 73#define GvNAMEUTF8(gv) GvNAMEUTF8_get(gv)
f5c1e807 74
08002bbf 75#define GvASSIGN_GENERATION(gv) (0 + ((XPV*) SvANY(gv))->xpv_len)
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76#define GvASSIGN_GENERATION_set(gv,val) \
77 STMT_START { assert(SvTYPE(gv) == SVt_PVGV); \
08002bbf 78 (((XPV*) SvANY(gv))->xpv_len = (val)); } STMT_END
169d2d72 79
954c1994 80/*
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81=head1 GV Functions
82
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83=for apidoc Am|SV*|GvSV|GV* gv
84
85Return the SV from the GV.
86
87=cut
88*/
89
79072805 90#define GvSV(gv) (GvGP(gv)->gp_sv)
c69033f2 91#ifdef PERL_DONT_CREATE_GVSV
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92#define GvSVn(gv) (*(GvGP(gv)->gp_sv ? \
93 &(GvGP(gv)->gp_sv) : \
94 &(GvGP(gv_SVadd(gv))->gp_sv)))
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95#else
96#define GvSVn(gv) GvSV(gv)
97#endif
98
79072805 99#define GvREFCNT(gv) (GvGP(gv)->gp_refcnt)
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100#define GvIO(gv) \
101 ( \
102 (gv) \
103 && ( \
104 SvTYPE((const SV*)(gv)) == SVt_PVGV \
105 || SvTYPE((const SV*)(gv)) == SVt_PVLV \
106 ) \
107 && GvGP(gv) \
108 ? GvIOp(gv) \
109 : NULL \
110 )
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111#define GvIOp(gv) (GvGP(gv)->gp_io)
112#define GvIOn(gv) (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv)))
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113
114#define GvFORM(gv) (GvGP(gv)->gp_form)
115#define GvAV(gv) (GvGP(gv)->gp_av)
44a8e56a 116
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117#define GvAVn(gv) (GvGP(gv)->gp_av ? \
118 GvGP(gv)->gp_av : \
119 GvGP(gv_AVadd(gv))->gp_av)
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120#define GvHV(gv) ((GvGP(gv))->gp_hv)
121
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122#define GvHVn(gv) (GvGP(gv)->gp_hv ? \
123 GvGP(gv)->gp_hv : \
124 GvGP(gv_HVadd(gv))->gp_hv)
79072805 125
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126#define GvCV(gv) (0+GvGP(gv)->gp_cv)
127#define GvCV_set(gv,cv) (GvGP(gv)->gp_cv = (cv))
463ee0b2 128#define GvCVGEN(gv) (GvGP(gv)->gp_cvgen)
601f1833 129#define GvCVu(gv) (GvGP(gv)->gp_cvgen ? NULL : GvGP(gv)->gp_cv)
79072805 130
79072805 131#define GvLINE(gv) (GvGP(gv)->gp_line)
f4890806 132#define GvFILE_HEK(gv) (GvGP(gv)->gp_file_hek)
5be41be4 133#define GvFILE(gv) (GvFILE_HEK(gv) ? HEK_KEY(GvFILE_HEK(gv)) : NULL)
57843af0 134#define GvFILEGV(gv) (gv_fetchfile(GvFILE(gv)))
79072805 135
79072805 136#define GvEGV(gv) (GvGP(gv)->gp_egv)
099be4f1 137#define GvEGVx(gv) (isGV_with_GP(gv) ? GvEGV(gv) : NULL)
748a9306 138#define GvENAME(gv) GvNAME(GvEGV(gv) ? GvEGV(gv) : gv)
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139#define GvENAMELEN(gv) GvNAMELEN(GvEGV(gv) ? GvEGV(gv) : gv)
140#define GvENAMEUTF8(gv) GvNAMEUTF8(GvEGV(gv) ? GvEGV(gv) : gv)
141#define GvENAME_HEK(gv) GvNAME_HEK(GvEGV(gv) ? GvEGV(gv) : gv)
748a9306 142#define GvESTASH(gv) GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv)
79072805 143
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144#define GVf_INTRO 0x01
145#define GVf_MULTI 0x02
146#define GVf_ASSUMECV 0x04
743e66e6 147#define GVf_IN_PAD 0x08
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148#define GVf_IMPORTED 0xF0
149#define GVf_IMPORTED_SV 0x10
150#define GVf_IMPORTED_AV 0x20
151#define GVf_IMPORTED_HV 0x40
152#define GVf_IMPORTED_CV 0x80
153
154#define GvINTRO(gv) (GvFLAGS(gv) & GVf_INTRO)
155#define GvINTRO_on(gv) (GvFLAGS(gv) |= GVf_INTRO)
156#define GvINTRO_off(gv) (GvFLAGS(gv) &= ~GVf_INTRO)
157
158#define GvMULTI(gv) (GvFLAGS(gv) & GVf_MULTI)
159#define GvMULTI_on(gv) (GvFLAGS(gv) |= GVf_MULTI)
160#define GvMULTI_off(gv) (GvFLAGS(gv) &= ~GVf_MULTI)
161
162#define GvASSUMECV(gv) (GvFLAGS(gv) & GVf_ASSUMECV)
163#define GvASSUMECV_on(gv) (GvFLAGS(gv) |= GVf_ASSUMECV)
164#define GvASSUMECV_off(gv) (GvFLAGS(gv) &= ~GVf_ASSUMECV)
165
166#define GvIMPORTED(gv) (GvFLAGS(gv) & GVf_IMPORTED)
167#define GvIMPORTED_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED)
168#define GvIMPORTED_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED)
169
170#define GvIMPORTED_SV(gv) (GvFLAGS(gv) & GVf_IMPORTED_SV)
171#define GvIMPORTED_SV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_SV)
172#define GvIMPORTED_SV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_SV)
173
174#define GvIMPORTED_AV(gv) (GvFLAGS(gv) & GVf_IMPORTED_AV)
175#define GvIMPORTED_AV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_AV)
176#define GvIMPORTED_AV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_AV)
177
178#define GvIMPORTED_HV(gv) (GvFLAGS(gv) & GVf_IMPORTED_HV)
179#define GvIMPORTED_HV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_HV)
180#define GvIMPORTED_HV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_HV)
181
182#define GvIMPORTED_CV(gv) (GvFLAGS(gv) & GVf_IMPORTED_CV)
183#define GvIMPORTED_CV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_CV)
184#define GvIMPORTED_CV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_CV)
185
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186#define GvIN_PAD(gv) (GvFLAGS(gv) & GVf_IN_PAD)
187#define GvIN_PAD_on(gv) (GvFLAGS(gv) |= GVf_IN_PAD)
188#define GvIN_PAD_off(gv) (GvFLAGS(gv) &= ~GVf_IN_PAD)
189
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190#ifndef PERL_CORE
191# define Nullgv Null(GV*)
192#endif
79072805 193
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194#define DM_RUID 0x001
195#define DM_EUID 0x002
6ca8229d 196#define DM_UID (DM_RUID|DM_EUID)
354b0578 197#define DM_ARRAY_ISA 0x004
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198#define DM_RGID 0x010
199#define DM_EGID 0x020
6ca8229d 200#define DM_GID (DM_RGID|DM_EGID)
613a9ec2 201#define DM_DELAY 0x100
79072805 202
0f303493 203/*
864dbfa3 204 * symbol creation flags, for use in gv_fetchpv() and get_*v()
0f303493 205 */
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206#define GV_ADD 0x01 /* add, if symbol not already there
207 For gv_name_set, adding a HEK for the first
208 time, so don't try to free what's there. */
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209#define GV_ADDMULTI 0x02 /* add, pretending it has been added already */
210#define GV_ADDWARN 0x04 /* add, but warn if symbol wasn't already there */
211#define GV_ADDINEVAL 0x08 /* add, as though we're doing so within an eval */
212#define GV_NOINIT 0x10 /* add, but don't init symbol, if type != PVGV */
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213/* This is used by toke.c to avoid turing placeholder constants in the symbol
214 table into full PVGVs with attached constant subroutines. */
215#define GV_NOADD_NOINIT 0x20 /* Don't add the symbol if it's not there.
216 Don't init it if it is there but ! PVGV */
e26df76a 217#define GV_NOEXPAND 0x40 /* Don't expand SvOK() entries to PVGV */
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218#define GV_NOTQUAL 0x80 /* A plain symbol name, not qualified with a
219 package (so skip checks for :: and ') */
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220#define GV_AUTOLOAD 0x100 /* gv_fetchmethod_flags() should AUTOLOAD */
221#define GV_CROAK 0x200 /* gv_fetchmethod_flags() should croak */
23496c6e 222#define GV_ADDMG 0x400 /* add if magical */
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223#define GV_NO_SVGMAGIC 0x800 /* Skip get-magic on an SV argument;
224 used only by gv_fetchsv(_nomg) */
add2581e 225
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226/* SVf_UTF8 (more accurately the return value from SvUTF8) is also valid
227 as a flag to gv_fetch_pvn_flags, so ensure it lies outside this range.
228*/
780a5241 229
23496c6e 230#define GV_NOADD_MASK \
77cb3b01 231 (SVf_UTF8|GV_NOADD_NOINIT|GV_NOEXPAND|GV_NOTQUAL|GV_ADDMG|GV_NO_SVGMAGIC)
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232/* The bit flags that don't cause gv_fetchpv() to add a symbol if not
233 found (with the exception GV_ADDMG, which *might* cause the symbol
234 to be added) */
780a5241 235
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236#define gv_fullname3(sv,gv,prefix) gv_fullname4(sv,gv,prefix,TRUE)
237#define gv_efullname3(sv,gv,prefix) gv_efullname4(sv,gv,prefix,TRUE)
887986eb 238#define gv_fetchmethod(stash, name) gv_fetchmethod_autoload(stash, name, TRUE)
77cb3b01 239#define gv_fetchsv_nomg(n,f,t) gv_fetchsv(n,(f)|GV_NO_SVGMAGIC,t)
e6066781 240#define gv_init(gv,stash,name,len,multi) gv_init_pvn(gv,stash,name,len,multi,0)
f4890806 241
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242#define gv_AVadd(gv) gv_add_by_type((gv), SVt_PVAV)
243#define gv_HVadd(gv) gv_add_by_type((gv), SVt_PVHV)
bb85b28a 244#define gv_IOadd(gv) gv_add_by_type((gv), SVt_PVIO)
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245#define gv_SVadd(gv) gv_add_by_type((gv), SVt_NULL)
246
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247/*
248 * Local variables:
249 * c-indentation-style: bsd
250 * c-basic-offset: 4
251 * indent-tabs-mode: t
252 * End:
253 *
254 * ex: set ts=8 sts=4 sw=4 noet:
255 */