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1 | /* gv.h |
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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 | |
11 | struct gp { |
12 | SV * gp_sv; /* scalar value */ |
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13 | struct io * gp_io; /* filehandle value */ |
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14 | CV * gp_cv; /* subroutine value */ |
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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 */ |
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21 | line_t gp_line; /* line first declared at (for -w) */ |
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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 | |
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27 | |
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28 | #if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__INTEL_COMPILER) |
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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);})) |
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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);})) |
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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); \ |
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44 | })) |
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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); \ |
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51 | })) |
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52 | # define GvNAME_get(gv) ({ assert(GvNAME_HEK(gv)); HEK_KEY(GvNAME_HEK(gv)); }) |
53 | # define GvNAMELEN_get(gv) ({ assert(GvNAME_HEK(gv)); HEK_LEN(GvNAME_HEK(gv)); }) |
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54 | #else |
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55 | # define GvGP(gv) ((gv)->sv_u.svu_gp) |
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56 | # define GvFLAGS(gv) (GvXPVGV(gv)->xpv_cur) |
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57 | # define GvSTASH(gv) (GvXPVGV(gv)->xnv_u.xgv_stash) |
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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)) |
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61 | #endif |
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62 | |
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63 | #define GvNAME(gv) GvNAME_get(gv) |
64 | #define GvNAMELEN(gv) GvNAMELEN_get(gv) |
65 | |
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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); \ |
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69 | (((XPV*) SvANY(gv))->xpv_len = (val)); } STMT_END |
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70 | |
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71 | /* |
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72 | =head1 GV Functions |
73 | |
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74 | =for apidoc Am|SV*|GvSV|GV* gv |
75 | |
76 | Return the SV from the GV. |
77 | |
78 | =cut |
79 | */ |
80 | |
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81 | #define GvSV(gv) (GvGP(gv)->gp_sv) |
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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 | |
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90 | #define GvREFCNT(gv) (GvGP(gv)->gp_refcnt) |
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91 | #define GvIO(gv) ((gv) && SvTYPE((const SV*)gv) == SVt_PVGV && GvGP(gv) ? GvIOp(gv) : NULL) |
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92 | #define GvIOp(gv) (GvGP(gv)->gp_io) |
93 | #define GvIOn(gv) (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv))) |
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94 | |
95 | #define GvFORM(gv) (GvGP(gv)->gp_form) |
96 | #define GvAV(gv) (GvGP(gv)->gp_av) |
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97 | |
98 | /* This macro is deprecated. Do not use! */ |
99 | #define GvREFCNT_inc(gv) ((GV*)SvREFCNT_inc(gv)) /* DO NOT USE */ |
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100 | |
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101 | #define GvAVn(gv) (GvGP(gv)->gp_av ? \ |
102 | GvGP(gv)->gp_av : \ |
103 | GvGP(gv_AVadd(gv))->gp_av) |
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104 | #define GvHV(gv) ((GvGP(gv))->gp_hv) |
105 | |
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106 | #define GvHVn(gv) (GvGP(gv)->gp_hv ? \ |
107 | GvGP(gv)->gp_hv : \ |
108 | GvGP(gv_HVadd(gv))->gp_hv) |
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109 | |
110 | #define GvCV(gv) (GvGP(gv)->gp_cv) |
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111 | #define GvCVGEN(gv) (GvGP(gv)->gp_cvgen) |
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112 | #define GvCVu(gv) (GvGP(gv)->gp_cvgen ? NULL : GvGP(gv)->gp_cv) |
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113 | |
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114 | #define GvLINE(gv) (GvGP(gv)->gp_line) |
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115 | #define GvFILE_HEK(gv) (GvGP(gv)->gp_file_hek) |
5be41be4 |
116 | #define GvFILE(gv) (GvFILE_HEK(gv) ? HEK_KEY(GvFILE_HEK(gv)) : NULL) |
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117 | #define GvFILEGV(gv) (gv_fetchfile(GvFILE(gv))) |
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118 | |
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119 | #define GvEGV(gv) (GvGP(gv)->gp_egv) |
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120 | #define GvENAME(gv) GvNAME(GvEGV(gv) ? GvEGV(gv) : gv) |
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121 | #define GvESTASH(gv) GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv) |
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122 | |
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123 | #define GVf_INTRO 0x01 |
124 | #define GVf_MULTI 0x02 |
125 | #define GVf_ASSUMECV 0x04 |
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126 | #define GVf_IN_PAD 0x08 |
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127 | #define GVf_IMPORTED 0xF0 |
128 | #define GVf_IMPORTED_SV 0x10 |
129 | #define GVf_IMPORTED_AV 0x20 |
130 | #define GVf_IMPORTED_HV 0x40 |
131 | #define GVf_IMPORTED_CV 0x80 |
132 | |
133 | #define GvINTRO(gv) (GvFLAGS(gv) & GVf_INTRO) |
134 | #define GvINTRO_on(gv) (GvFLAGS(gv) |= GVf_INTRO) |
135 | #define GvINTRO_off(gv) (GvFLAGS(gv) &= ~GVf_INTRO) |
136 | |
137 | #define GvMULTI(gv) (GvFLAGS(gv) & GVf_MULTI) |
138 | #define GvMULTI_on(gv) (GvFLAGS(gv) |= GVf_MULTI) |
139 | #define GvMULTI_off(gv) (GvFLAGS(gv) &= ~GVf_MULTI) |
140 | |
141 | #define GvASSUMECV(gv) (GvFLAGS(gv) & GVf_ASSUMECV) |
142 | #define GvASSUMECV_on(gv) (GvFLAGS(gv) |= GVf_ASSUMECV) |
143 | #define GvASSUMECV_off(gv) (GvFLAGS(gv) &= ~GVf_ASSUMECV) |
144 | |
145 | #define GvIMPORTED(gv) (GvFLAGS(gv) & GVf_IMPORTED) |
146 | #define GvIMPORTED_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED) |
147 | #define GvIMPORTED_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED) |
148 | |
149 | #define GvIMPORTED_SV(gv) (GvFLAGS(gv) & GVf_IMPORTED_SV) |
150 | #define GvIMPORTED_SV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_SV) |
151 | #define GvIMPORTED_SV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_SV) |
152 | |
153 | #define GvIMPORTED_AV(gv) (GvFLAGS(gv) & GVf_IMPORTED_AV) |
154 | #define GvIMPORTED_AV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_AV) |
155 | #define GvIMPORTED_AV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_AV) |
156 | |
157 | #define GvIMPORTED_HV(gv) (GvFLAGS(gv) & GVf_IMPORTED_HV) |
158 | #define GvIMPORTED_HV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_HV) |
159 | #define GvIMPORTED_HV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_HV) |
160 | |
161 | #define GvIMPORTED_CV(gv) (GvFLAGS(gv) & GVf_IMPORTED_CV) |
162 | #define GvIMPORTED_CV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_CV) |
163 | #define GvIMPORTED_CV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_CV) |
164 | |
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165 | #define GvIN_PAD(gv) (GvFLAGS(gv) & GVf_IN_PAD) |
166 | #define GvIN_PAD_on(gv) (GvFLAGS(gv) |= GVf_IN_PAD) |
167 | #define GvIN_PAD_off(gv) (GvFLAGS(gv) &= ~GVf_IN_PAD) |
168 | |
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169 | #ifndef PERL_CORE |
170 | # define Nullgv Null(GV*) |
171 | #endif |
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172 | |
173 | #define DM_UID 0x003 |
174 | #define DM_RUID 0x001 |
175 | #define DM_EUID 0x002 |
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176 | #define DM_ARRAY 0x004 |
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177 | #define DM_GID 0x030 |
178 | #define DM_RGID 0x010 |
179 | #define DM_EGID 0x020 |
180 | #define DM_DELAY 0x100 |
181 | |
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182 | /* |
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183 | * symbol creation flags, for use in gv_fetchpv() and get_*v() |
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184 | */ |
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185 | #define GV_ADD 0x01 /* add, if symbol not already there |
186 | For gv_name_set, adding a HEK for the first |
187 | time, so don't try to free what's there. */ |
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188 | #define GV_ADDMULTI 0x02 /* add, pretending it has been added already */ |
189 | #define GV_ADDWARN 0x04 /* add, but warn if symbol wasn't already there */ |
190 | #define GV_ADDINEVAL 0x08 /* add, as though we're doing so within an eval */ |
191 | #define GV_NOINIT 0x10 /* add, but don't init symbol, if type != PVGV */ |
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192 | /* This is used by toke.c to avoid turing placeholder constants in the symbol |
193 | table into full PVGVs with attached constant subroutines. */ |
194 | #define GV_NOADD_NOINIT 0x20 /* Don't add the symbol if it's not there. |
195 | Don't init it if it is there but ! PVGV */ |
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196 | #define GV_NOEXPAND 0x40 /* Don't expand SvOK() entries to PVGV */ |
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197 | #define GV_NOTQUAL 0x80 /* A plain symbol name, not qualified with a |
198 | package (so skip checks for :: and ') */ |
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199 | #define GV_AUTOLOAD 0x100 /* gv_fetchmethod_flags() should AUTOLOAD */ |
200 | #define GV_CROAK 0x200 /* gv_fetchmethod_flags() should croak */ |
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201 | |
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202 | /* SVf_UTF8 (more accurately the return value from SvUTF8) is also valid |
203 | as a flag to gv_fetch_pvn_flags, so ensure it lies outside this range. |
204 | */ |
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205 | |
206 | #define GV_NOADD_MASK (SVf_UTF8|GV_NOADD_NOINIT|GV_NOEXPAND|GV_NOTQUAL) |
207 | /* The bit flags that don't cause gv_fetchpv() to add a symbol if not found */ |
208 | |
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209 | #define gv_fullname3(sv,gv,prefix) gv_fullname4(sv,gv,prefix,TRUE) |
210 | #define gv_efullname3(sv,gv,prefix) gv_efullname4(sv,gv,prefix,TRUE) |
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211 | #define gv_fetchmethod(stash, name) gv_fetchmethod_autoload(stash, name, TRUE) |
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212 | |
213 | /* |
214 | * Local variables: |
215 | * c-indentation-style: bsd |
216 | * c-basic-offset: 4 |
217 | * indent-tabs-mode: t |
218 | * End: |
219 | * |
220 | * ex: set ts=8 sts=4 sw=4 noet: |
221 | */ |