Commit | Line | Data |
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a0d0e21e | 1 | /* gv.h |
79072805 | 2 | * |
1129b882 NC |
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 | |
79072805 LW |
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 | * | |
79072805 LW |
9 | */ |
10 | ||
11 | struct 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 */ |
9bd87817 NC |
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) */ |
79072805 LW |
23 | }; |
24 | ||
79072805 LW |
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); \ |
603aa20d RU |
31 | assert(SvTYPE(_gvgp) == SVt_PVGV || SvTYPE(_gvgp) == SVt_PVLV); \ |
32 | assert(isGV_with_GP(_gvgp)); \ | |
c43ae56f DM |
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) \ |
603aa20d RU |
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) \ |
603aa20d RU |
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) \ |
603aa20d RU |
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)); }) |
b2c03ebd | 59 | # define GvNAMEUTF8(gv) ({ assert(GvNAME_HEK(gv)); HEK_UTF8(GvNAME_HEK(gv)); }) |
c72c5e99 | 60 | #else |
c43ae56f DM |
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) |
9f616d01 MHM |
66 | # define GvNAME_get(gv) HEK_KEY(GvNAME_HEK(gv)) |
67 | # define GvNAMELEN_get(gv) HEK_LEN(GvNAME_HEK(gv)) | |
b2c03ebd | 68 | # define GvNAMEUTF8(gv) HEK_UTF8(GvNAME_HEK(gv)) |
c72c5e99 | 69 | #endif |
dedf8e73 | 70 | |
f5c1e807 NC |
71 | #define GvNAME(gv) GvNAME_get(gv) |
72 | #define GvNAMELEN(gv) GvNAMELEN_get(gv) | |
73 | ||
08002bbf | 74 | #define GvASSIGN_GENERATION(gv) (0 + ((XPV*) SvANY(gv))->xpv_len) |
169d2d72 NC |
75 | #define GvASSIGN_GENERATION_set(gv,val) \ |
76 | STMT_START { assert(SvTYPE(gv) == SVt_PVGV); \ | |
08002bbf | 77 | (((XPV*) SvANY(gv))->xpv_len = (val)); } STMT_END |
169d2d72 | 78 | |
954c1994 | 79 | /* |
ccfc67b7 JH |
80 | =head1 GV Functions |
81 | ||
954c1994 GS |
82 | =for apidoc Am|SV*|GvSV|GV* gv |
83 | ||
84 | Return the SV from the GV. | |
85 | ||
b019ef6e JL |
86 | =for apidoc Am|AV*|GvAV|GV* gv |
87 | ||
88 | Return the AV from the GV. | |
89 | ||
90 | =for apidoc Am|HV*|GvHV|GV* gv | |
91 | ||
92 | Return the HV from the GV. | |
93 | ||
94 | =for apidoc Am|CV*|GvCV|GV* gv | |
95 | ||
96 | Return the CV from the GV. | |
97 | ||
954c1994 GS |
98 | =cut |
99 | */ | |
100 | ||
79072805 | 101 | #define GvSV(gv) (GvGP(gv)->gp_sv) |
c69033f2 | 102 | #ifdef PERL_DONT_CREATE_GVSV |
547f15c3 NC |
103 | #define GvSVn(gv) (*(GvGP(gv)->gp_sv ? \ |
104 | &(GvGP(gv)->gp_sv) : \ | |
105 | &(GvGP(gv_SVadd(gv))->gp_sv))) | |
c69033f2 NC |
106 | #else |
107 | #define GvSVn(gv) GvSV(gv) | |
108 | #endif | |
109 | ||
79072805 | 110 | #define GvREFCNT(gv) (GvGP(gv)->gp_refcnt) |
13be902c FC |
111 | #define GvIO(gv) \ |
112 | ( \ | |
113 | (gv) \ | |
114 | && ( \ | |
115 | SvTYPE((const SV*)(gv)) == SVt_PVGV \ | |
116 | || SvTYPE((const SV*)(gv)) == SVt_PVLV \ | |
117 | ) \ | |
118 | && GvGP(gv) \ | |
119 | ? GvIOp(gv) \ | |
120 | : NULL \ | |
121 | ) | |
a0d0e21e LW |
122 | #define GvIOp(gv) (GvGP(gv)->gp_io) |
123 | #define GvIOn(gv) (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv))) | |
79072805 LW |
124 | |
125 | #define GvFORM(gv) (GvGP(gv)->gp_form) | |
126 | #define GvAV(gv) (GvGP(gv)->gp_av) | |
44a8e56a | 127 | |
79072805 LW |
128 | #define GvAVn(gv) (GvGP(gv)->gp_av ? \ |
129 | GvGP(gv)->gp_av : \ | |
130 | GvGP(gv_AVadd(gv))->gp_av) | |
79072805 LW |
131 | #define GvHV(gv) ((GvGP(gv))->gp_hv) |
132 | ||
79072805 LW |
133 | #define GvHVn(gv) (GvGP(gv)->gp_hv ? \ |
134 | GvGP(gv)->gp_hv : \ | |
135 | GvGP(gv_HVadd(gv))->gp_hv) | |
79072805 | 136 | |
c43ae56f DM |
137 | #define GvCV(gv) (0+GvGP(gv)->gp_cv) |
138 | #define GvCV_set(gv,cv) (GvGP(gv)->gp_cv = (cv)) | |
463ee0b2 | 139 | #define GvCVGEN(gv) (GvGP(gv)->gp_cvgen) |
601f1833 | 140 | #define GvCVu(gv) (GvGP(gv)->gp_cvgen ? NULL : GvGP(gv)->gp_cv) |
79072805 | 141 | |
79072805 | 142 | #define GvLINE(gv) (GvGP(gv)->gp_line) |
f4890806 | 143 | #define GvFILE_HEK(gv) (GvGP(gv)->gp_file_hek) |
5be41be4 | 144 | #define GvFILE(gv) (GvFILE_HEK(gv) ? HEK_KEY(GvFILE_HEK(gv)) : NULL) |
57843af0 | 145 | #define GvFILEGV(gv) (gv_fetchfile(GvFILE(gv))) |
79072805 | 146 | |
79072805 | 147 | #define GvEGV(gv) (GvGP(gv)->gp_egv) |
099be4f1 | 148 | #define GvEGVx(gv) (isGV_with_GP(gv) ? GvEGV(gv) : NULL) |
748a9306 | 149 | #define GvENAME(gv) GvNAME(GvEGV(gv) ? GvEGV(gv) : gv) |
f2462604 BF |
150 | #define GvENAMELEN(gv) GvNAMELEN(GvEGV(gv) ? GvEGV(gv) : gv) |
151 | #define GvENAMEUTF8(gv) GvNAMEUTF8(GvEGV(gv) ? GvEGV(gv) : gv) | |
152 | #define GvENAME_HEK(gv) GvNAME_HEK(GvEGV(gv) ? GvEGV(gv) : gv) | |
748a9306 | 153 | #define GvESTASH(gv) GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv) |
79072805 | 154 | |
a5f75d66 AD |
155 | #define GVf_INTRO 0x01 |
156 | #define GVf_MULTI 0x02 | |
157 | #define GVf_ASSUMECV 0x04 | |
743e66e6 | 158 | #define GVf_IN_PAD 0x08 |
a5f75d66 AD |
159 | #define GVf_IMPORTED 0xF0 |
160 | #define GVf_IMPORTED_SV 0x10 | |
161 | #define GVf_IMPORTED_AV 0x20 | |
162 | #define GVf_IMPORTED_HV 0x40 | |
163 | #define GVf_IMPORTED_CV 0x80 | |
164 | ||
165 | #define GvINTRO(gv) (GvFLAGS(gv) & GVf_INTRO) | |
166 | #define GvINTRO_on(gv) (GvFLAGS(gv) |= GVf_INTRO) | |
167 | #define GvINTRO_off(gv) (GvFLAGS(gv) &= ~GVf_INTRO) | |
168 | ||
169 | #define GvMULTI(gv) (GvFLAGS(gv) & GVf_MULTI) | |
170 | #define GvMULTI_on(gv) (GvFLAGS(gv) |= GVf_MULTI) | |
171 | #define GvMULTI_off(gv) (GvFLAGS(gv) &= ~GVf_MULTI) | |
172 | ||
173 | #define GvASSUMECV(gv) (GvFLAGS(gv) & GVf_ASSUMECV) | |
174 | #define GvASSUMECV_on(gv) (GvFLAGS(gv) |= GVf_ASSUMECV) | |
175 | #define GvASSUMECV_off(gv) (GvFLAGS(gv) &= ~GVf_ASSUMECV) | |
176 | ||
177 | #define GvIMPORTED(gv) (GvFLAGS(gv) & GVf_IMPORTED) | |
178 | #define GvIMPORTED_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED) | |
179 | #define GvIMPORTED_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED) | |
180 | ||
181 | #define GvIMPORTED_SV(gv) (GvFLAGS(gv) & GVf_IMPORTED_SV) | |
182 | #define GvIMPORTED_SV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_SV) | |
183 | #define GvIMPORTED_SV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_SV) | |
184 | ||
185 | #define GvIMPORTED_AV(gv) (GvFLAGS(gv) & GVf_IMPORTED_AV) | |
186 | #define GvIMPORTED_AV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_AV) | |
187 | #define GvIMPORTED_AV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_AV) | |
188 | ||
189 | #define GvIMPORTED_HV(gv) (GvFLAGS(gv) & GVf_IMPORTED_HV) | |
190 | #define GvIMPORTED_HV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_HV) | |
191 | #define GvIMPORTED_HV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_HV) | |
192 | ||
193 | #define GvIMPORTED_CV(gv) (GvFLAGS(gv) & GVf_IMPORTED_CV) | |
194 | #define GvIMPORTED_CV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_CV) | |
195 | #define GvIMPORTED_CV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_CV) | |
196 | ||
743e66e6 GS |
197 | #define GvIN_PAD(gv) (GvFLAGS(gv) & GVf_IN_PAD) |
198 | #define GvIN_PAD_on(gv) (GvFLAGS(gv) |= GVf_IN_PAD) | |
199 | #define GvIN_PAD_off(gv) (GvFLAGS(gv) &= ~GVf_IN_PAD) | |
200 | ||
3ae1b226 NC |
201 | #ifndef PERL_CORE |
202 | # define Nullgv Null(GV*) | |
203 | #endif | |
79072805 | 204 | |
613a9ec2 DM |
205 | #define DM_RUID 0x001 |
206 | #define DM_EUID 0x002 | |
6ca8229d | 207 | #define DM_UID (DM_RUID|DM_EUID) |
354b0578 | 208 | #define DM_ARRAY_ISA 0x004 |
613a9ec2 DM |
209 | #define DM_RGID 0x010 |
210 | #define DM_EGID 0x020 | |
6ca8229d | 211 | #define DM_GID (DM_RGID|DM_EGID) |
613a9ec2 | 212 | #define DM_DELAY 0x100 |
79072805 | 213 | |
0f303493 | 214 | /* |
864dbfa3 | 215 | * symbol creation flags, for use in gv_fetchpv() and get_*v() |
0f303493 | 216 | */ |
ae8cc45f NC |
217 | #define GV_ADD 0x01 /* add, if symbol not already there |
218 | For gv_name_set, adding a HEK for the first | |
219 | time, so don't try to free what's there. */ | |
04ec7e59 FC |
220 | #define GV_ADDMULTI 0x02 /* add, pretending it has been added |
221 | already; used also by gv_init_* */ | |
0f303493 GS |
222 | #define GV_ADDWARN 0x04 /* add, but warn if symbol wasn't already there */ |
223 | #define GV_ADDINEVAL 0x08 /* add, as though we're doing so within an eval */ | |
224 | #define GV_NOINIT 0x10 /* add, but don't init symbol, if type != PVGV */ | |
add2581e NC |
225 | /* This is used by toke.c to avoid turing placeholder constants in the symbol |
226 | table into full PVGVs with attached constant subroutines. */ | |
227 | #define GV_NOADD_NOINIT 0x20 /* Don't add the symbol if it's not there. | |
228 | Don't init it if it is there but ! PVGV */ | |
e26df76a | 229 | #define GV_NOEXPAND 0x40 /* Don't expand SvOK() entries to PVGV */ |
fafc274c NC |
230 | #define GV_NOTQUAL 0x80 /* A plain symbol name, not qualified with a |
231 | package (so skip checks for :: and ') */ | |
256d1bb2 NC |
232 | #define GV_AUTOLOAD 0x100 /* gv_fetchmethod_flags() should AUTOLOAD */ |
233 | #define GV_CROAK 0x200 /* gv_fetchmethod_flags() should croak */ | |
23496c6e | 234 | #define GV_ADDMG 0x400 /* add if magical */ |
77cb3b01 FC |
235 | #define GV_NO_SVGMAGIC 0x800 /* Skip get-magic on an SV argument; |
236 | used only by gv_fetchsv(_nomg) */ | |
add2581e | 237 | |
aae43805 FC |
238 | /* Flags for gv_fetchmeth_pvn and gv_autoload_pvn*/ |
239 | #define GV_SUPER 0x1000 /* SUPER::method */ | |
240 | ||
0eeb01b9 FC |
241 | /* Flags for gv_autoload_*/ |
242 | #define GV_AUTOLOAD_ISMETHOD 1 /* autoloading a method? */ | |
243 | ||
7a5fd60d | 244 | /* SVf_UTF8 (more accurately the return value from SvUTF8) is also valid |
04ec7e59 | 245 | as a flag to various gv_* functions, so ensure it lies |
0eeb01b9 | 246 | outside this range. |
7a5fd60d | 247 | */ |
780a5241 | 248 | |
23496c6e | 249 | #define GV_NOADD_MASK \ |
77cb3b01 | 250 | (SVf_UTF8|GV_NOADD_NOINIT|GV_NOEXPAND|GV_NOTQUAL|GV_ADDMG|GV_NO_SVGMAGIC) |
23496c6e FC |
251 | /* The bit flags that don't cause gv_fetchpv() to add a symbol if not |
252 | found (with the exception GV_ADDMG, which *might* cause the symbol | |
253 | to be added) */ | |
780a5241 | 254 | |
d9a22066 NC |
255 | #define gv_fullname3(sv,gv,prefix) gv_fullname4(sv,gv,prefix,TRUE) |
256 | #define gv_efullname3(sv,gv,prefix) gv_efullname4(sv,gv,prefix,TRUE) | |
887986eb | 257 | #define gv_fetchmethod(stash, name) gv_fetchmethod_autoload(stash, name, TRUE) |
77cb3b01 | 258 | #define gv_fetchsv_nomg(n,f,t) gv_fetchsv(n,(f)|GV_NO_SVGMAGIC,t) |
04ec7e59 FC |
259 | #define gv_init(gv,stash,name,len,multi) \ |
260 | gv_init_pvn(gv,stash,name,len,GV_ADDMULTI*!!(multi)) | |
d21989ed BF |
261 | #define gv_fetchmeth(stash,name,len,level) gv_fetchmeth_pvn(stash, name, len, level, 0) |
262 | #define gv_fetchmeth_autoload(stash,name,len,level) gv_fetchmeth_pvn_autoload(stash, name, len, level, 0) | |
44130a26 | 263 | #define gv_fetchmethod_flags(stash,name,flags) gv_fetchmethod_pv_flags(stash, name, flags) |
0eeb01b9 FC |
264 | #define gv_autoload4(stash, name, len, method) \ |
265 | gv_autoload_pvn(stash, name, len, !!(method)) | |
9cc50d5b | 266 | #define newGVgen(pack) newGVgen_flags(pack, 0) |
978a498e FC |
267 | #define gv_method_changed(gv) \ |
268 | ( \ | |
269 | assert_(isGV_with_GP(gv)) \ | |
270 | GvREFCNT(gv) > 1 \ | |
271 | ? (void)++PL_sub_generation \ | |
272 | : mro_method_changed_in(GvSTASH(gv)) \ | |
273 | ) | |
f4890806 | 274 | |
d5713896 NC |
275 | #define gv_AVadd(gv) gv_add_by_type((gv), SVt_PVAV) |
276 | #define gv_HVadd(gv) gv_add_by_type((gv), SVt_PVHV) | |
bb85b28a | 277 | #define gv_IOadd(gv) gv_add_by_type((gv), SVt_PVIO) |
d5713896 NC |
278 | #define gv_SVadd(gv) gv_add_by_type((gv), SVt_NULL) |
279 | ||
f4890806 NC |
280 | /* |
281 | * Local variables: | |
282 | * c-indentation-style: bsd | |
283 | * c-basic-offset: 4 | |
14d04a33 | 284 | * indent-tabs-mode: nil |
f4890806 NC |
285 | * End: |
286 | * | |
14d04a33 | 287 | * ex: set ts=8 sts=4 sw=4 et: |
f4890806 | 288 | */ |