Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* gv.c |
79072805 | 2 | * |
4bb101f2 JH |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4 | * 2000, 2001, 2002, 2003, 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 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * 'Mercy!' cried Gandalf. 'If the giving of information is to be the cure | |
13 | * of your inquisitiveness, I shall spend all the rest of my days answering | |
14 | * you. What more do you want to know?' | |
15 | * 'The names of all the stars, and of all living things, and the whole | |
16 | * history of Middle-earth and Over-heaven and of the Sundering Seas,' | |
17 | * laughed Pippin. | |
79072805 LW |
18 | */ |
19 | ||
ccfc67b7 JH |
20 | /* |
21 | =head1 GV Functions | |
22 | */ | |
23 | ||
79072805 | 24 | #include "EXTERN.h" |
864dbfa3 | 25 | #define PERL_IN_GV_C |
79072805 LW |
26 | #include "perl.h" |
27 | ||
28 | GV * | |
864dbfa3 | 29 | Perl_gv_AVadd(pTHX_ register GV *gv) |
79072805 | 30 | { |
a0d0e21e | 31 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
cea2e8a9 | 32 | Perl_croak(aTHX_ "Bad symbol for array"); |
79072805 LW |
33 | if (!GvAV(gv)) |
34 | GvAV(gv) = newAV(); | |
35 | return gv; | |
36 | } | |
37 | ||
38 | GV * | |
864dbfa3 | 39 | Perl_gv_HVadd(pTHX_ register GV *gv) |
79072805 | 40 | { |
a0d0e21e | 41 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
cea2e8a9 | 42 | Perl_croak(aTHX_ "Bad symbol for hash"); |
79072805 | 43 | if (!GvHV(gv)) |
463ee0b2 | 44 | GvHV(gv) = newHV(); |
79072805 LW |
45 | return gv; |
46 | } | |
47 | ||
48 | GV * | |
864dbfa3 | 49 | Perl_gv_IOadd(pTHX_ register GV *gv) |
a0d0e21e LW |
50 | { |
51 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) | |
cea2e8a9 | 52 | Perl_croak(aTHX_ "Bad symbol for filehandle"); |
5bd07a3d | 53 | if (!GvIOp(gv)) { |
7fb37951 AMS |
54 | #ifdef GV_UNIQUE_CHECK |
55 | if (GvUNIQUE(gv)) { | |
56 | Perl_croak(aTHX_ "Bad symbol for filehandle (GV is unique)"); | |
5bd07a3d DM |
57 | } |
58 | #endif | |
a0d0e21e | 59 | GvIOp(gv) = newIO(); |
5bd07a3d | 60 | } |
a0d0e21e LW |
61 | return gv; |
62 | } | |
63 | ||
64 | GV * | |
864dbfa3 | 65 | Perl_gv_fetchfile(pTHX_ const char *name) |
79072805 | 66 | { |
eacec437 | 67 | char smallbuf[256]; |
53d95988 | 68 | char *tmpbuf; |
8ebc5c01 | 69 | STRLEN tmplen; |
79072805 LW |
70 | GV *gv; |
71 | ||
1d7c1841 GS |
72 | if (!PL_defstash) |
73 | return Nullgv; | |
74 | ||
53d95988 CS |
75 | tmplen = strlen(name) + 2; |
76 | if (tmplen < sizeof smallbuf) | |
77 | tmpbuf = smallbuf; | |
78 | else | |
79 | New(603, tmpbuf, tmplen + 1, char); | |
0ac0412a | 80 | /* This is where the debugger's %{"::_<$filename"} hash is created */ |
53d95988 CS |
81 | tmpbuf[0] = '_'; |
82 | tmpbuf[1] = '<'; | |
83 | strcpy(tmpbuf + 2, name); | |
3280af22 | 84 | gv = *(GV**)hv_fetch(PL_defstash, tmpbuf, tmplen, TRUE); |
1d7c1841 | 85 | if (!isGV(gv)) { |
3280af22 | 86 | gv_init(gv, PL_defstash, tmpbuf, tmplen, FALSE); |
1d7c1841 GS |
87 | sv_setpv(GvSV(gv), name); |
88 | if (PERLDB_LINE) | |
14befaf4 | 89 | hv_magic(GvHVn(gv_AVadd(gv)), Nullgv, PERL_MAGIC_dbfile); |
1d7c1841 | 90 | } |
53d95988 CS |
91 | if (tmpbuf != smallbuf) |
92 | Safefree(tmpbuf); | |
79072805 LW |
93 | return gv; |
94 | } | |
95 | ||
463ee0b2 | 96 | void |
864dbfa3 | 97 | Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi) |
463ee0b2 LW |
98 | { |
99 | register GP *gp; | |
55d729e4 GS |
100 | bool doproto = SvTYPE(gv) > SVt_NULL; |
101 | char *proto = (doproto && SvPOK(gv)) ? SvPVX(gv) : NULL; | |
463ee0b2 | 102 | |
dc437b57 | 103 | sv_upgrade((SV*)gv, SVt_PVGV); |
55d729e4 GS |
104 | if (SvLEN(gv)) { |
105 | if (proto) { | |
106 | SvPVX(gv) = NULL; | |
107 | SvLEN(gv) = 0; | |
108 | SvPOK_off(gv); | |
109 | } else | |
110 | Safefree(SvPVX(gv)); | |
111 | } | |
44a8e56a | 112 | Newz(602, gp, 1, GP); |
8990e307 | 113 | GvGP(gv) = gp_ref(gp); |
463ee0b2 | 114 | GvSV(gv) = NEWSV(72,0); |
1d7c1841 GS |
115 | GvLINE(gv) = CopLINE(PL_curcop); |
116 | GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : ""; | |
005a453c | 117 | GvCVGEN(gv) = 0; |
463ee0b2 | 118 | GvEGV(gv) = gv; |
14befaf4 | 119 | sv_magic((SV*)gv, (SV*)gv, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 120 | GvSTASH(gv) = (HV*)SvREFCNT_inc(stash); |
a0d0e21e | 121 | GvNAME(gv) = savepvn(name, len); |
463ee0b2 | 122 | GvNAMELEN(gv) = len; |
23ad5bf5 | 123 | if (multi || doproto) /* doproto means it _was_ mentioned */ |
a5f75d66 | 124 | GvMULTI_on(gv); |
55d729e4 | 125 | if (doproto) { /* Replicate part of newSUB here. */ |
57ff9a15 | 126 | SvIOK_off(gv); |
55d729e4 | 127 | ENTER; |
b099ddc0 | 128 | /* XXX unsafe for threads if eval_owner isn't held */ |
55d729e4 | 129 | start_subparse(0,0); /* Create CV in compcv. */ |
3280af22 | 130 | GvCV(gv) = PL_compcv; |
55d729e4 GS |
131 | LEAVE; |
132 | ||
3280af22 | 133 | PL_sub_generation++; |
65c50114 | 134 | CvGV(GvCV(gv)) = gv; |
e0d088d0 | 135 | CvFILE_set_from_cop(GvCV(gv), PL_curcop); |
3280af22 | 136 | CvSTASH(GvCV(gv)) = PL_curstash; |
55d729e4 GS |
137 | if (proto) { |
138 | sv_setpv((SV*)GvCV(gv), proto); | |
139 | Safefree(proto); | |
140 | } | |
141 | } | |
463ee0b2 LW |
142 | } |
143 | ||
76e3520e | 144 | STATIC void |
cea2e8a9 | 145 | S_gv_init_sv(pTHX_ GV *gv, I32 sv_type) |
a0d0e21e LW |
146 | { |
147 | switch (sv_type) { | |
148 | case SVt_PVIO: | |
149 | (void)GvIOn(gv); | |
150 | break; | |
151 | case SVt_PVAV: | |
152 | (void)GvAVn(gv); | |
153 | break; | |
154 | case SVt_PVHV: | |
155 | (void)GvHVn(gv); | |
156 | break; | |
157 | } | |
158 | } | |
159 | ||
954c1994 GS |
160 | /* |
161 | =for apidoc gv_fetchmeth | |
162 | ||
163 | Returns the glob with the given C<name> and a defined subroutine or | |
164 | C<NULL>. The glob lives in the given C<stash>, or in the stashes | |
07766739 | 165 | accessible via @ISA and UNIVERSAL::. |
954c1994 GS |
166 | |
167 | The argument C<level> should be either 0 or -1. If C<level==0>, as a | |
168 | side-effect creates a glob with the given C<name> in the given C<stash> | |
169 | which in the case of success contains an alias for the subroutine, and sets | |
b267980d | 170 | up caching info for this glob. Similarly for all the searched stashes. |
954c1994 GS |
171 | |
172 | This function grants C<"SUPER"> token as a postfix of the stash name. The | |
173 | GV returned from C<gv_fetchmeth> may be a method cache entry, which is not | |
4929bf7b | 174 | visible to Perl code. So when calling C<call_sv>, you should not use |
954c1994 | 175 | the GV directly; instead, you should use the method's CV, which can be |
b267980d | 176 | obtained from the GV with the C<GvCV> macro. |
954c1994 GS |
177 | |
178 | =cut | |
179 | */ | |
180 | ||
79072805 | 181 | GV * |
864dbfa3 | 182 | Perl_gv_fetchmeth(pTHX_ HV *stash, const char *name, STRLEN len, I32 level) |
79072805 LW |
183 | { |
184 | AV* av; | |
463ee0b2 | 185 | GV* topgv; |
79072805 | 186 | GV* gv; |
463ee0b2 | 187 | GV** gvp; |
748a9306 | 188 | CV* cv; |
a0d0e21e | 189 | |
af09ea45 IK |
190 | /* UNIVERSAL methods should be callable without a stash */ |
191 | if (!stash) { | |
192 | level = -1; /* probably appropriate */ | |
193 | if(!(stash = gv_stashpvn("UNIVERSAL", 9, FALSE))) | |
194 | return 0; | |
195 | } | |
196 | ||
e27ad1f2 AV |
197 | if (!HvNAME(stash)) |
198 | Perl_croak(aTHX_ | |
199 | "Can't use anonymous symbol table for method lookup"); | |
200 | ||
44a8e56a | 201 | if ((level > 100) || (level < -100)) |
cea2e8a9 | 202 | Perl_croak(aTHX_ "Recursive inheritance detected while looking for method '%s' in package '%s'", |
3e0ccd42 | 203 | name, HvNAME(stash)); |
463ee0b2 | 204 | |
cea2e8a9 | 205 | DEBUG_o( Perl_deb(aTHX_ "Looking for method %s in package %s\n",name,HvNAME(stash)) ); |
44a8e56a | 206 | |
207 | gvp = (GV**)hv_fetch(stash, name, len, (level >= 0)); | |
208 | if (!gvp) | |
209 | topgv = Nullgv; | |
210 | else { | |
211 | topgv = *gvp; | |
212 | if (SvTYPE(topgv) != SVt_PVGV) | |
213 | gv_init(topgv, stash, name, len, TRUE); | |
155aba94 | 214 | if ((cv = GvCV(topgv))) { |
44a8e56a | 215 | /* If genuine method or valid cache entry, use it */ |
3280af22 | 216 | if (!GvCVGEN(topgv) || GvCVGEN(topgv) == PL_sub_generation) |
7a4c00b4 | 217 | return topgv; |
44a8e56a | 218 | /* Stale cached entry: junk it */ |
219 | SvREFCNT_dec(cv); | |
220 | GvCV(topgv) = cv = Nullcv; | |
221 | GvCVGEN(topgv) = 0; | |
748a9306 | 222 | } |
3280af22 | 223 | else if (GvCVGEN(topgv) == PL_sub_generation) |
005a453c | 224 | return 0; /* cache indicates sub doesn't exist */ |
463ee0b2 | 225 | } |
79072805 | 226 | |
9607fc9c | 227 | gvp = (GV**)hv_fetch(stash, "ISA", 3, FALSE); |
3280af22 | 228 | av = (gvp && (gv = *gvp) && gv != (GV*)&PL_sv_undef) ? GvAV(gv) : Nullav; |
9607fc9c | 229 | |
fb73857a | 230 | /* create and re-create @.*::SUPER::ISA on demand */ |
231 | if (!av || !SvMAGIC(av)) { | |
9607fc9c | 232 | char* packname = HvNAME(stash); |
233 | STRLEN packlen = strlen(packname); | |
234 | ||
235 | if (packlen >= 7 && strEQ(packname + packlen - 7, "::SUPER")) { | |
236 | HV* basestash; | |
237 | ||
238 | packlen -= 7; | |
239 | basestash = gv_stashpvn(packname, packlen, TRUE); | |
240 | gvp = (GV**)hv_fetch(basestash, "ISA", 3, FALSE); | |
3280af22 | 241 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
9607fc9c | 242 | gvp = (GV**)hv_fetch(stash, "ISA", 3, TRUE); |
243 | if (!gvp || !(gv = *gvp)) | |
cea2e8a9 | 244 | Perl_croak(aTHX_ "Cannot create %s::ISA", HvNAME(stash)); |
9607fc9c | 245 | if (SvTYPE(gv) != SVt_PVGV) |
246 | gv_init(gv, stash, "ISA", 3, TRUE); | |
247 | SvREFCNT_dec(GvAV(gv)); | |
248 | GvAV(gv) = (AV*)SvREFCNT_inc(av); | |
249 | } | |
250 | } | |
251 | } | |
252 | ||
253 | if (av) { | |
79072805 | 254 | SV** svp = AvARRAY(av); |
93965878 NIS |
255 | /* NOTE: No support for tied ISA */ |
256 | I32 items = AvFILLp(av) + 1; | |
79072805 | 257 | while (items--) { |
79072805 | 258 | SV* sv = *svp++; |
a0d0e21e | 259 | HV* basestash = gv_stashsv(sv, FALSE); |
9bbf4081 | 260 | if (!basestash) { |
599cee73 | 261 | if (ckWARN(WARN_MISC)) |
35c1215d NC |
262 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Can't locate package %"SVf" for @%s::ISA", |
263 | sv, HvNAME(stash)); | |
79072805 LW |
264 | continue; |
265 | } | |
44a8e56a | 266 | gv = gv_fetchmeth(basestash, name, len, |
267 | (level >= 0) ? level + 1 : level - 1); | |
268 | if (gv) | |
269 | goto gotcha; | |
79072805 LW |
270 | } |
271 | } | |
a0d0e21e | 272 | |
9607fc9c | 273 | /* if at top level, try UNIVERSAL */ |
274 | ||
44a8e56a | 275 | if (level == 0 || level == -1) { |
9607fc9c | 276 | HV* lastchance; |
277 | ||
155aba94 GS |
278 | if ((lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE))) { |
279 | if ((gv = gv_fetchmeth(lastchance, name, len, | |
280 | (level >= 0) ? level + 1 : level - 1))) | |
281 | { | |
44a8e56a | 282 | gotcha: |
dc848c6f | 283 | /* |
284 | * Cache method in topgv if: | |
285 | * 1. topgv has no synonyms (else inheritance crosses wires) | |
286 | * 2. method isn't a stub (else AUTOLOAD fails spectacularly) | |
287 | */ | |
288 | if (topgv && | |
289 | GvREFCNT(topgv) == 1 && | |
290 | (cv = GvCV(gv)) && | |
291 | (CvROOT(cv) || CvXSUB(cv))) | |
292 | { | |
155aba94 | 293 | if ((cv = GvCV(topgv))) |
44a8e56a | 294 | SvREFCNT_dec(cv); |
295 | GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv)); | |
3280af22 | 296 | GvCVGEN(topgv) = PL_sub_generation; |
44a8e56a | 297 | } |
a0d0e21e LW |
298 | return gv; |
299 | } | |
005a453c JP |
300 | else if (topgv && GvREFCNT(topgv) == 1) { |
301 | /* cache the fact that the method is not defined */ | |
3280af22 | 302 | GvCVGEN(topgv) = PL_sub_generation; |
005a453c | 303 | } |
a0d0e21e LW |
304 | } |
305 | } | |
306 | ||
79072805 LW |
307 | return 0; |
308 | } | |
309 | ||
954c1994 | 310 | /* |
611c1e95 IZ |
311 | =for apidoc gv_fetchmeth_autoload |
312 | ||
313 | Same as gv_fetchmeth(), but looks for autoloaded subroutines too. | |
314 | Returns a glob for the subroutine. | |
315 | ||
316 | For an autoloaded subroutine without a GV, will create a GV even | |
317 | if C<level < 0>. For an autoloaded subroutine without a stub, GvCV() | |
318 | of the result may be zero. | |
319 | ||
320 | =cut | |
321 | */ | |
322 | ||
323 | GV * | |
324 | Perl_gv_fetchmeth_autoload(pTHX_ HV *stash, const char *name, STRLEN len, I32 level) | |
325 | { | |
326 | GV *gv = gv_fetchmeth(stash, name, len, level); | |
327 | ||
328 | if (!gv) { | |
329 | char autoload[] = "AUTOLOAD"; | |
330 | STRLEN autolen = sizeof(autoload)-1; | |
331 | CV *cv; | |
332 | GV **gvp; | |
333 | ||
334 | if (!stash) | |
335 | return Nullgv; /* UNIVERSAL::AUTOLOAD could cause trouble */ | |
336 | if (len == autolen && strnEQ(name, autoload, autolen)) | |
337 | return Nullgv; | |
338 | if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE))) | |
339 | return Nullgv; | |
340 | cv = GvCV(gv); | |
341 | if (!(CvROOT(cv) || CvXSUB(cv))) | |
342 | return Nullgv; | |
343 | /* Have an autoload */ | |
344 | if (level < 0) /* Cannot do without a stub */ | |
345 | gv_fetchmeth(stash, name, len, 0); | |
346 | gvp = (GV**)hv_fetch(stash, name, len, (level >= 0)); | |
347 | if (!gvp) | |
348 | return Nullgv; | |
349 | return *gvp; | |
350 | } | |
351 | return gv; | |
352 | } | |
353 | ||
354 | /* | |
954c1994 GS |
355 | =for apidoc gv_fetchmethod |
356 | ||
6d0f518e | 357 | See L<gv_fetchmethod_autoload>. |
954c1994 GS |
358 | |
359 | =cut | |
360 | */ | |
361 | ||
79072805 | 362 | GV * |
864dbfa3 | 363 | Perl_gv_fetchmethod(pTHX_ HV *stash, const char *name) |
463ee0b2 | 364 | { |
dc848c6f | 365 | return gv_fetchmethod_autoload(stash, name, TRUE); |
366 | } | |
367 | ||
954c1994 GS |
368 | /* |
369 | =for apidoc gv_fetchmethod_autoload | |
370 | ||
371 | Returns the glob which contains the subroutine to call to invoke the method | |
372 | on the C<stash>. In fact in the presence of autoloading this may be the | |
373 | glob for "AUTOLOAD". In this case the corresponding variable $AUTOLOAD is | |
b267980d | 374 | already setup. |
954c1994 GS |
375 | |
376 | The third parameter of C<gv_fetchmethod_autoload> determines whether | |
377 | AUTOLOAD lookup is performed if the given method is not present: non-zero | |
b267980d | 378 | means yes, look for AUTOLOAD; zero means no, don't look for AUTOLOAD. |
954c1994 | 379 | Calling C<gv_fetchmethod> is equivalent to calling C<gv_fetchmethod_autoload> |
b267980d | 380 | with a non-zero C<autoload> parameter. |
954c1994 GS |
381 | |
382 | These functions grant C<"SUPER"> token as a prefix of the method name. Note | |
383 | that if you want to keep the returned glob for a long time, you need to | |
384 | check for it being "AUTOLOAD", since at the later time the call may load a | |
385 | different subroutine due to $AUTOLOAD changing its value. Use the glob | |
b267980d | 386 | created via a side effect to do this. |
954c1994 GS |
387 | |
388 | These functions have the same side-effects and as C<gv_fetchmeth> with | |
389 | C<level==0>. C<name> should be writable if contains C<':'> or C<' | |
390 | ''>. The warning against passing the GV returned by C<gv_fetchmeth> to | |
b267980d | 391 | C<call_sv> apply equally to these functions. |
954c1994 GS |
392 | |
393 | =cut | |
394 | */ | |
395 | ||
dc848c6f | 396 | GV * |
864dbfa3 | 397 | Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload) |
dc848c6f | 398 | { |
08105a92 GS |
399 | register const char *nend; |
400 | const char *nsplit = 0; | |
a0d0e21e | 401 | GV* gv; |
0dae17bd GS |
402 | HV* ostash = stash; |
403 | ||
404 | if (stash && SvTYPE(stash) < SVt_PVHV) | |
405 | stash = Nullhv; | |
b267980d | 406 | |
463ee0b2 | 407 | for (nend = name; *nend; nend++) { |
9607fc9c | 408 | if (*nend == '\'') |
a0d0e21e | 409 | nsplit = nend; |
9607fc9c | 410 | else if (*nend == ':' && *(nend + 1) == ':') |
411 | nsplit = ++nend; | |
a0d0e21e LW |
412 | } |
413 | if (nsplit) { | |
08105a92 | 414 | const char *origname = name; |
a0d0e21e | 415 | name = nsplit + 1; |
a0d0e21e LW |
416 | if (*nsplit == ':') |
417 | --nsplit; | |
9607fc9c | 418 | if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) { |
419 | /* ->SUPER::method should really be looked up in original stash */ | |
cea2e8a9 | 420 | SV *tmpstr = sv_2mortal(Perl_newSVpvf(aTHX_ "%s::SUPER", |
1d7c1841 | 421 | CopSTASHPV(PL_curcop))); |
af09ea45 | 422 | /* __PACKAGE__::SUPER stash should be autovivified */ |
9607fc9c | 423 | stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE); |
cea2e8a9 | 424 | DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n", |
9607fc9c | 425 | origname, HvNAME(stash), name) ); |
4633a7c4 | 426 | } |
e189a56d | 427 | else { |
af09ea45 IK |
428 | /* don't autovifify if ->NoSuchStash::method */ |
429 | stash = gv_stashpvn(origname, nsplit - origname, FALSE); | |
e189a56d IK |
430 | |
431 | /* however, explicit calls to Pkg::SUPER::method may | |
432 | happen, and may require autovivification to work */ | |
433 | if (!stash && (nsplit - origname) >= 7 && | |
434 | strnEQ(nsplit - 7, "::SUPER", 7) && | |
435 | gv_stashpvn(origname, nsplit - origname - 7, FALSE)) | |
436 | stash = gv_stashpvn(origname, nsplit - origname, TRUE); | |
437 | } | |
0dae17bd | 438 | ostash = stash; |
4633a7c4 LW |
439 | } |
440 | ||
9607fc9c | 441 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
a0d0e21e | 442 | if (!gv) { |
2f6e0fe7 | 443 | if (strEQ(name,"import") || strEQ(name,"unimport")) |
3280af22 | 444 | gv = (GV*)&PL_sv_yes; |
dc848c6f | 445 | else if (autoload) |
0dae17bd | 446 | gv = gv_autoload4(ostash, name, nend - name, TRUE); |
463ee0b2 | 447 | } |
dc848c6f | 448 | else if (autoload) { |
449 | CV* cv = GvCV(gv); | |
09280a33 CS |
450 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
451 | GV* stubgv; | |
452 | GV* autogv; | |
453 | ||
454 | if (CvANON(cv)) | |
455 | stubgv = gv; | |
456 | else { | |
457 | stubgv = CvGV(cv); | |
458 | if (GvCV(stubgv) != cv) /* orphaned import */ | |
459 | stubgv = gv; | |
460 | } | |
461 | autogv = gv_autoload4(GvSTASH(stubgv), | |
462 | GvNAME(stubgv), GvNAMELEN(stubgv), TRUE); | |
dc848c6f | 463 | if (autogv) |
464 | gv = autogv; | |
465 | } | |
466 | } | |
44a8e56a | 467 | |
468 | return gv; | |
469 | } | |
470 | ||
471 | GV* | |
864dbfa3 | 472 | Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method) |
44a8e56a | 473 | { |
df3728a2 JH |
474 | char autoload[] = "AUTOLOAD"; |
475 | STRLEN autolen = sizeof(autoload)-1; | |
44a8e56a | 476 | GV* gv; |
477 | CV* cv; | |
478 | HV* varstash; | |
479 | GV* vargv; | |
480 | SV* varsv; | |
0dae17bd | 481 | char *packname = ""; |
44a8e56a | 482 | |
483 | if (len == autolen && strnEQ(name, autoload, autolen)) | |
484 | return Nullgv; | |
0dae17bd GS |
485 | if (stash) { |
486 | if (SvTYPE(stash) < SVt_PVHV) { | |
487 | packname = SvPV_nolen((SV*)stash); | |
488 | stash = Nullhv; | |
489 | } | |
490 | else { | |
491 | packname = HvNAME(stash); | |
492 | } | |
493 | } | |
dc848c6f | 494 | if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE))) |
495 | return Nullgv; | |
496 | cv = GvCV(gv); | |
497 | ||
adb5a9ae | 498 | if (!(CvROOT(cv) || CvXSUB(cv))) |
ed850460 JH |
499 | return Nullgv; |
500 | ||
dc848c6f | 501 | /* |
502 | * Inheriting AUTOLOAD for non-methods works ... for now. | |
503 | */ | |
12bcd1a6 | 504 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX) && !method && |
599cee73 | 505 | (GvCVGEN(gv) || GvSTASH(gv) != stash)) |
12bcd1a6 | 506 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
dc848c6f | 507 | "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated", |
0dae17bd | 508 | packname, (int)len, name); |
44a8e56a | 509 | |
adb5a9ae DM |
510 | if (CvXSUB(cv)) { |
511 | /* rather than lookup/init $AUTOLOAD here | |
512 | * only to have the XSUB do another lookup for $AUTOLOAD | |
513 | * and split that value on the last '::', | |
514 | * pass along the same data via some unused fields in the CV | |
515 | */ | |
516 | CvSTASH(cv) = stash; | |
0222aa7d | 517 | SvPVX(cv) = (char *)name; /* cast to lose constness warning */ |
adb5a9ae DM |
518 | SvCUR(cv) = len; |
519 | return gv; | |
520 | } | |
adb5a9ae | 521 | |
44a8e56a | 522 | /* |
523 | * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name. | |
524 | * The subroutine's original name may not be "AUTOLOAD", so we don't | |
525 | * use that, but for lack of anything better we will use the sub's | |
526 | * original package to look up $AUTOLOAD. | |
527 | */ | |
528 | varstash = GvSTASH(CvGV(cv)); | |
529 | vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE); | |
3d35f11b GS |
530 | ENTER; |
531 | ||
44a8e56a | 532 | if (!isGV(vargv)) |
533 | gv_init(vargv, varstash, autoload, autolen, FALSE); | |
3d35f11b | 534 | LEAVE; |
44a8e56a | 535 | varsv = GvSV(vargv); |
0dae17bd | 536 | sv_setpv(varsv, packname); |
44a8e56a | 537 | sv_catpvn(varsv, "::", 2); |
538 | sv_catpvn(varsv, name, len); | |
539 | SvTAINTED_off(varsv); | |
a0d0e21e LW |
540 | return gv; |
541 | } | |
542 | ||
d2c93421 RH |
543 | /* The "gv" parameter should be the glob known to Perl code as *! |
544 | * The scalar must already have been magicalized. | |
545 | */ | |
546 | STATIC void | |
547 | S_require_errno(pTHX_ GV *gv) | |
548 | { | |
549 | HV* stash = gv_stashpvn("Errno",5,FALSE); | |
550 | ||
551 | if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) { | |
552 | dSP; | |
553 | PUTBACK; | |
554 | ENTER; | |
555 | save_scalar(gv); /* keep the value of $! */ | |
84f1fa11 AMS |
556 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, |
557 | newSVpvn("Errno",5), Nullsv); | |
d2c93421 RH |
558 | LEAVE; |
559 | SPAGAIN; | |
560 | stash = gv_stashpvn("Errno",5,FALSE); | |
561 | if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) | |
562 | Perl_croak(aTHX_ "Can't use %%! because Errno.pm is not available"); | |
563 | } | |
564 | } | |
565 | ||
954c1994 GS |
566 | /* |
567 | =for apidoc gv_stashpv | |
568 | ||
386d01d6 GS |
569 | Returns a pointer to the stash for a specified package. C<name> should |
570 | be a valid UTF-8 string. If C<create> is set then the package will be | |
571 | created if it does not already exist. If C<create> is not set and the | |
572 | package does not exist then NULL is returned. | |
954c1994 GS |
573 | |
574 | =cut | |
575 | */ | |
576 | ||
a0d0e21e | 577 | HV* |
864dbfa3 | 578 | Perl_gv_stashpv(pTHX_ const char *name, I32 create) |
a0d0e21e | 579 | { |
dc437b57 | 580 | return gv_stashpvn(name, strlen(name), create); |
581 | } | |
582 | ||
583 | HV* | |
864dbfa3 | 584 | Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 create) |
dc437b57 | 585 | { |
46fc3d4c | 586 | char smallbuf[256]; |
587 | char *tmpbuf; | |
a0d0e21e LW |
588 | HV *stash; |
589 | GV *tmpgv; | |
dc437b57 | 590 | |
46fc3d4c | 591 | if (namelen + 3 < sizeof smallbuf) |
592 | tmpbuf = smallbuf; | |
593 | else | |
594 | New(606, tmpbuf, namelen + 3, char); | |
dc437b57 | 595 | Copy(name,tmpbuf,namelen,char); |
596 | tmpbuf[namelen++] = ':'; | |
597 | tmpbuf[namelen++] = ':'; | |
598 | tmpbuf[namelen] = '\0'; | |
46fc3d4c | 599 | tmpgv = gv_fetchpv(tmpbuf, create, SVt_PVHV); |
600 | if (tmpbuf != smallbuf) | |
601 | Safefree(tmpbuf); | |
a0d0e21e LW |
602 | if (!tmpgv) |
603 | return 0; | |
604 | if (!GvHV(tmpgv)) | |
605 | GvHV(tmpgv) = newHV(); | |
606 | stash = GvHV(tmpgv); | |
607 | if (!HvNAME(stash)) | |
608 | HvNAME(stash) = savepv(name); | |
609 | return stash; | |
463ee0b2 LW |
610 | } |
611 | ||
954c1994 GS |
612 | /* |
613 | =for apidoc gv_stashsv | |
614 | ||
386d01d6 GS |
615 | Returns a pointer to the stash for a specified package, which must be a |
616 | valid UTF-8 string. See C<gv_stashpv>. | |
954c1994 GS |
617 | |
618 | =cut | |
619 | */ | |
620 | ||
a0d0e21e | 621 | HV* |
864dbfa3 | 622 | Perl_gv_stashsv(pTHX_ SV *sv, I32 create) |
a0d0e21e | 623 | { |
dc437b57 | 624 | register char *ptr; |
625 | STRLEN len; | |
626 | ptr = SvPV(sv,len); | |
627 | return gv_stashpvn(ptr, len, create); | |
a0d0e21e LW |
628 | } |
629 | ||
630 | ||
463ee0b2 | 631 | GV * |
864dbfa3 | 632 | Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) |
79072805 | 633 | { |
08105a92 | 634 | register const char *name = nambeg; |
463ee0b2 | 635 | register GV *gv = 0; |
79072805 | 636 | GV**gvp; |
79072805 | 637 | I32 len; |
08105a92 | 638 | register const char *namend; |
463ee0b2 | 639 | HV *stash = 0; |
79072805 | 640 | |
c07a80fd | 641 | if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */ |
642 | name++; | |
643 | ||
79072805 | 644 | for (namend = name; *namend; namend++) { |
1d7c1841 GS |
645 | if ((*namend == ':' && namend[1] == ':') |
646 | || (*namend == '\'' && namend[1])) | |
463ee0b2 | 647 | { |
463ee0b2 | 648 | if (!stash) |
3280af22 | 649 | stash = PL_defstash; |
dc437b57 | 650 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0d0e21e | 651 | return Nullgv; |
463ee0b2 | 652 | |
85e6fe83 LW |
653 | len = namend - name; |
654 | if (len > 0) { | |
3c78fafa | 655 | char smallbuf[256]; |
62b57502 | 656 | char *tmpbuf; |
62b57502 | 657 | |
25c09a70 | 658 | if (len + 3 < sizeof (smallbuf)) |
3c78fafa | 659 | tmpbuf = smallbuf; |
62b57502 MB |
660 | else |
661 | New(601, tmpbuf, len+3, char); | |
a0d0e21e LW |
662 | Copy(name, tmpbuf, len, char); |
663 | tmpbuf[len++] = ':'; | |
664 | tmpbuf[len++] = ':'; | |
665 | tmpbuf[len] = '\0'; | |
463ee0b2 | 666 | gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); |
6fa846a0 | 667 | gv = gvp ? *gvp : Nullgv; |
3280af22 | 668 | if (gv && gv != (GV*)&PL_sv_undef) { |
6fa846a0 | 669 | if (SvTYPE(gv) != SVt_PVGV) |
0f303493 | 670 | gv_init(gv, stash, tmpbuf, len, (add & GV_ADDMULTI)); |
6fa846a0 GS |
671 | else |
672 | GvMULTI_on(gv); | |
673 | } | |
3c78fafa | 674 | if (tmpbuf != smallbuf) |
62b57502 | 675 | Safefree(tmpbuf); |
3280af22 | 676 | if (!gv || gv == (GV*)&PL_sv_undef) |
a0d0e21e | 677 | return Nullgv; |
85e6fe83 | 678 | |
463ee0b2 LW |
679 | if (!(stash = GvHV(gv))) |
680 | stash = GvHV(gv) = newHV(); | |
85e6fe83 | 681 | |
463ee0b2 | 682 | if (!HvNAME(stash)) |
a0d0e21e | 683 | HvNAME(stash) = savepvn(nambeg, namend - nambeg); |
463ee0b2 LW |
684 | } |
685 | ||
686 | if (*namend == ':') | |
687 | namend++; | |
688 | namend++; | |
689 | name = namend; | |
690 | if (!*name) | |
3280af22 | 691 | return gv ? gv : (GV*)*hv_fetch(PL_defstash, "main::", 6, TRUE); |
79072805 | 692 | } |
79072805 | 693 | } |
a0d0e21e | 694 | len = namend - name; |
463ee0b2 LW |
695 | |
696 | /* No stash in name, so see how we can default */ | |
697 | ||
698 | if (!stash) { | |
7e2040f0 | 699 | if (isIDFIRST_lazy(name)) { |
9607fc9c | 700 | bool global = FALSE; |
701 | ||
463ee0b2 | 702 | if (isUPPER(*name)) { |
9d116dd7 JH |
703 | if (*name == 'S' && ( |
704 | strEQ(name, "SIG") || | |
705 | strEQ(name, "STDIN") || | |
706 | strEQ(name, "STDOUT") || | |
707 | strEQ(name, "STDERR"))) | |
708 | global = TRUE; | |
709 | else if (*name == 'I' && strEQ(name, "INC")) | |
710 | global = TRUE; | |
711 | else if (*name == 'E' && strEQ(name, "ENV")) | |
712 | global = TRUE; | |
463ee0b2 LW |
713 | else if (*name == 'A' && ( |
714 | strEQ(name, "ARGV") || | |
9d116dd7 | 715 | strEQ(name, "ARGVOUT"))) |
463ee0b2 LW |
716 | global = TRUE; |
717 | } | |
c99da370 | 718 | else if (*name == '_' && !name[1]) |
463ee0b2 | 719 | global = TRUE; |
9607fc9c | 720 | |
463ee0b2 | 721 | if (global) |
3280af22 NIS |
722 | stash = PL_defstash; |
723 | else if ((COP*)PL_curcop == &PL_compiling) { | |
724 | stash = PL_curstash; | |
725 | if (add && (PL_hints & HINT_STRICT_VARS) && | |
748a9306 LW |
726 | sv_type != SVt_PVCV && |
727 | sv_type != SVt_PVGV && | |
4633a7c4 | 728 | sv_type != SVt_PVFM && |
c07a80fd | 729 | sv_type != SVt_PVIO && |
377b8fbc | 730 | !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) ) |
748a9306 | 731 | { |
4633a7c4 LW |
732 | gvp = (GV**)hv_fetch(stash,name,len,0); |
733 | if (!gvp || | |
3280af22 | 734 | *gvp == (GV*)&PL_sv_undef || |
a5f75d66 AD |
735 | SvTYPE(*gvp) != SVt_PVGV) |
736 | { | |
4633a7c4 | 737 | stash = 0; |
a5f75d66 | 738 | } |
155aba94 GS |
739 | else if ((sv_type == SVt_PV && !GvIMPORTED_SV(*gvp)) || |
740 | (sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp)) || | |
741 | (sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp)) ) | |
4633a7c4 | 742 | { |
cea2e8a9 | 743 | Perl_warn(aTHX_ "Variable \"%c%s\" is not imported", |
4633a7c4 LW |
744 | sv_type == SVt_PVAV ? '@' : |
745 | sv_type == SVt_PVHV ? '%' : '$', | |
746 | name); | |
8ebc5c01 | 747 | if (GvCVu(*gvp)) |
cc507455 | 748 | Perl_warn(aTHX_ "\t(Did you mean &%s instead?)\n", name); |
a0d0e21e | 749 | stash = 0; |
4633a7c4 | 750 | } |
a0d0e21e | 751 | } |
85e6fe83 | 752 | } |
463ee0b2 | 753 | else |
1d7c1841 | 754 | stash = CopSTASH(PL_curcop); |
463ee0b2 LW |
755 | } |
756 | else | |
3280af22 | 757 | stash = PL_defstash; |
463ee0b2 LW |
758 | } |
759 | ||
760 | /* By this point we should have a stash and a name */ | |
761 | ||
a0d0e21e | 762 | if (!stash) { |
5a844595 GS |
763 | if (add) { |
764 | qerror(Perl_mess(aTHX_ | |
765 | "Global symbol \"%s%s\" requires explicit package name", | |
766 | (sv_type == SVt_PV ? "$" | |
767 | : sv_type == SVt_PVAV ? "@" | |
768 | : sv_type == SVt_PVHV ? "%" | |
769 | : ""), name)); | |
d7aacf4e | 770 | stash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV)); |
a0d0e21e | 771 | } |
d7aacf4e RGS |
772 | else |
773 | return Nullgv; | |
a0d0e21e LW |
774 | } |
775 | ||
776 | if (!SvREFCNT(stash)) /* symbol table under destruction */ | |
777 | return Nullgv; | |
778 | ||
79072805 | 779 | gvp = (GV**)hv_fetch(stash,name,len,add); |
3280af22 | 780 | if (!gvp || *gvp == (GV*)&PL_sv_undef) |
79072805 LW |
781 | return Nullgv; |
782 | gv = *gvp; | |
783 | if (SvTYPE(gv) == SVt_PVGV) { | |
a0d0e21e | 784 | if (add) { |
a5f75d66 | 785 | GvMULTI_on(gv); |
a0d0e21e | 786 | gv_init_sv(gv, sv_type); |
d2c93421 RH |
787 | if (*name=='!' && sv_type == SVt_PVHV && len==1) |
788 | require_errno(gv); | |
a0d0e21e | 789 | } |
79072805 | 790 | return gv; |
55d729e4 GS |
791 | } else if (add & GV_NOINIT) { |
792 | return gv; | |
79072805 | 793 | } |
93a17b20 LW |
794 | |
795 | /* Adding a new symbol */ | |
796 | ||
0453d815 | 797 | if (add & GV_ADDWARN && ckWARN_d(WARN_INTERNAL)) |
9014280d | 798 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Had to create %s unexpectedly", nambeg); |
55d729e4 | 799 | gv_init(gv, stash, name, len, add & GV_ADDMULTI); |
a0d0e21e | 800 | gv_init_sv(gv, sv_type); |
93a17b20 | 801 | |
7272584d PM |
802 | if (isALPHA(name[0]) && ! (isLEXWARN_on ? ckWARN(WARN_ONCE) |
803 | : (PL_dowarn & G_WARN_ON ) ) ) | |
0453d815 PM |
804 | GvMULTI_on(gv) ; |
805 | ||
93a17b20 LW |
806 | /* set up magic where warranted */ |
807 | switch (*name) { | |
a0d0e21e LW |
808 | case 'A': |
809 | if (strEQ(name, "ARGV")) { | |
810 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; | |
811 | } | |
812 | break; | |
a0d0e21e LW |
813 | case 'E': |
814 | if (strnEQ(name, "EXPORT", 6)) | |
a5f75d66 | 815 | GvMULTI_on(gv); |
a0d0e21e | 816 | break; |
463ee0b2 LW |
817 | case 'I': |
818 | if (strEQ(name, "ISA")) { | |
819 | AV* av = GvAVn(gv); | |
a5f75d66 | 820 | GvMULTI_on(gv); |
14befaf4 | 821 | sv_magic((SV*)av, (SV*)gv, PERL_MAGIC_isa, Nullch, 0); |
93965878 | 822 | /* NOTE: No support for tied ISA */ |
55d729e4 GS |
823 | if ((add & GV_ADDMULTI) && strEQ(nambeg,"AnyDBM_File::ISA") |
824 | && AvFILLp(av) == -1) | |
85e6fe83 | 825 | { |
a0d0e21e | 826 | char *pname; |
79cb57f6 | 827 | av_push(av, newSVpvn(pname = "NDBM_File",9)); |
dc437b57 | 828 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 829 | av_push(av, newSVpvn(pname = "DB_File",7)); |
dc437b57 | 830 | gv_stashpvn(pname, 7, TRUE); |
79cb57f6 | 831 | av_push(av, newSVpvn(pname = "GDBM_File",9)); |
dc437b57 | 832 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 833 | av_push(av, newSVpvn(pname = "SDBM_File",9)); |
dc437b57 | 834 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 835 | av_push(av, newSVpvn(pname = "ODBM_File",9)); |
dc437b57 | 836 | gv_stashpvn(pname, 9, TRUE); |
85e6fe83 | 837 | } |
463ee0b2 LW |
838 | } |
839 | break; | |
a0d0e21e LW |
840 | case 'O': |
841 | if (strEQ(name, "OVERLOAD")) { | |
842 | HV* hv = GvHVn(gv); | |
a5f75d66 | 843 | GvMULTI_on(gv); |
14befaf4 | 844 | hv_magic(hv, Nullgv, PERL_MAGIC_overload); |
a0d0e21e LW |
845 | } |
846 | break; | |
93a17b20 LW |
847 | case 'S': |
848 | if (strEQ(name, "SIG")) { | |
849 | HV *hv; | |
dc437b57 | 850 | I32 i; |
1d7c1841 | 851 | if (!PL_psig_ptr) { |
0a8e0eff NIS |
852 | Newz(73, PL_psig_ptr, SIG_SIZE, SV*); |
853 | Newz(73, PL_psig_name, SIG_SIZE, SV*); | |
854 | Newz(73, PL_psig_pend, SIG_SIZE, int); | |
1d7c1841 GS |
855 | } |
856 | GvMULTI_on(gv); | |
857 | hv = GvHVn(gv); | |
14befaf4 | 858 | hv_magic(hv, Nullgv, PERL_MAGIC_sig); |
76d3c696 | 859 | for (i = 1; i < SIG_SIZE; i++) { |
dc437b57 | 860 | SV ** init; |
1d7c1841 GS |
861 | init = hv_fetch(hv, PL_sig_name[i], strlen(PL_sig_name[i]), 1); |
862 | if (init) | |
863 | sv_setsv(*init, &PL_sv_undef); | |
22c35a8c GS |
864 | PL_psig_ptr[i] = 0; |
865 | PL_psig_name[i] = 0; | |
0a8e0eff | 866 | PL_psig_pend[i] = 0; |
dc437b57 | 867 | } |
93a17b20 LW |
868 | } |
869 | break; | |
09bef843 SB |
870 | case 'V': |
871 | if (strEQ(name, "VERSION")) | |
872 | GvMULTI_on(gv); | |
873 | break; | |
93a17b20 LW |
874 | |
875 | case '&': | |
93a17b20 | 876 | case '`': |
93a17b20 | 877 | case '\'': |
b4a9608f JP |
878 | if ( |
879 | len > 1 || | |
880 | sv_type == SVt_PVAV || | |
881 | sv_type == SVt_PVHV || | |
882 | sv_type == SVt_PVCV || | |
b4a9608f JP |
883 | sv_type == SVt_PVFM || |
884 | sv_type == SVt_PVIO | |
885 | ) { break; } | |
3280af22 | 886 | PL_sawampersand = TRUE; |
a0d0e21e | 887 | goto ro_magicalize; |
93a17b20 LW |
888 | |
889 | case ':': | |
463ee0b2 LW |
890 | if (len > 1) |
891 | break; | |
3280af22 | 892 | sv_setpv(GvSV(gv),PL_chopset); |
93a17b20 LW |
893 | goto magicalize; |
894 | ||
ff0cee69 | 895 | case '?': |
896 | if (len > 1) | |
897 | break; | |
898 | #ifdef COMPLEX_STATUS | |
07f14f54 | 899 | (void)SvUPGRADE(GvSV(gv), SVt_PVLV); |
ff0cee69 | 900 | #endif |
901 | goto magicalize; | |
902 | ||
067391ea | 903 | case '!': |
4318d5a0 | 904 | if (len > 1) |
067391ea | 905 | break; |
d2c93421 RH |
906 | |
907 | /* If %! has been used, automatically load Errno.pm. | |
908 | The require will itself set errno, so in order to | |
909 | preserve its value we have to set up the magic | |
910 | now (rather than going to magicalize) | |
911 | */ | |
912 | ||
14befaf4 | 913 | sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, len); |
d2c93421 RH |
914 | |
915 | if (sv_type == SVt_PVHV) | |
916 | require_errno(gv); | |
917 | ||
918 | break; | |
6cef1e77 IZ |
919 | case '-': |
920 | if (len > 1) | |
921 | break; | |
922 | else { | |
923 | AV* av = GvAVn(gv); | |
14befaf4 | 924 | sv_magic((SV*)av, Nullsv, PERL_MAGIC_regdata, Nullch, 0); |
03a27ae7 | 925 | SvREADONLY_on(av); |
6cef1e77 IZ |
926 | } |
927 | goto magicalize; | |
a0d0e21e | 928 | case '*': |
f02c194e RGS |
929 | if (len == 1 && sv_type == SVt_PV && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
930 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
9b332a20 | 931 | "$* is no longer supported"); |
f02c194e RGS |
932 | break; |
933 | case '#': | |
934 | if (len == 1 && sv_type == SVt_PV && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) | |
935 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
936 | "Use of $# is deprecated"); | |
a0d0e21e LW |
937 | /* FALL THROUGH */ |
938 | case '[': | |
93a17b20 LW |
939 | case '^': |
940 | case '~': | |
941 | case '=': | |
93a17b20 LW |
942 | case '%': |
943 | case '.': | |
93a17b20 LW |
944 | case '(': |
945 | case ')': | |
946 | case '<': | |
947 | case '>': | |
948 | case ',': | |
949 | case '\\': | |
950 | case '/': | |
16070b82 GS |
951 | case '\001': /* $^A */ |
952 | case '\003': /* $^C */ | |
953 | case '\004': /* $^D */ | |
16070b82 GS |
954 | case '\006': /* $^F */ |
955 | case '\010': /* $^H */ | |
956 | case '\011': /* $^I, NOT \t in EBCDIC */ | |
a01268b5 | 957 | case '\016': /* $^N */ |
16070b82 | 958 | case '\020': /* $^P */ |
463ee0b2 LW |
959 | if (len > 1) |
960 | break; | |
961 | goto magicalize; | |
d8ce0c9a BH |
962 | case '|': |
963 | if (len > 1) | |
964 | break; | |
965 | sv_setiv(GvSV(gv), (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0); | |
966 | goto magicalize; | |
0a378802 JH |
967 | case '\005': /* $^E && $^ENCODING */ |
968 | if (len > 1 && strNE(name, "\005NCODING")) | |
969 | break; | |
970 | goto magicalize; | |
971 | ||
ac27b0f5 NIS |
972 | case '\017': /* $^O & $^OPEN */ |
973 | if (len > 1 && strNE(name, "\017PEN")) | |
974 | break; | |
975 | goto magicalize; | |
16070b82 | 976 | case '\023': /* $^S */ |
6cef1e77 IZ |
977 | if (len > 1) |
978 | break; | |
979 | goto ro_magicalize; | |
eb27b65e | 980 | case '\024': /* $^T, ${^TAINT} */ |
7c36658b MS |
981 | if (len == 1) |
982 | goto magicalize; | |
983 | else if (strEQ(name, "\024AINT")) | |
984 | goto ro_magicalize; | |
985 | else | |
986 | break; | |
fde18df1 | 987 | case '\025': |
a05d7ebb | 988 | if (len > 1 && strNE(name, "\025NICODE")) |
fde18df1 JH |
989 | break; |
990 | goto ro_magicalize; | |
991 | ||
6a818117 | 992 | case '\027': /* $^W & $^WARNING_BITS */ |
fde18df1 JH |
993 | if (len > 1 |
994 | && strNE(name, "\027ARNING_BITS") | |
995 | ) | |
4438c4b7 JH |
996 | break; |
997 | goto magicalize; | |
463ee0b2 | 998 | |
a0d0e21e | 999 | case '+': |
6cef1e77 IZ |
1000 | if (len > 1) |
1001 | break; | |
1002 | else { | |
1003 | AV* av = GvAVn(gv); | |
14befaf4 | 1004 | sv_magic((SV*)av, (SV*)av, PERL_MAGIC_regdata, Nullch, 0); |
03a27ae7 | 1005 | SvREADONLY_on(av); |
6cef1e77 IZ |
1006 | } |
1007 | /* FALL THROUGH */ | |
463ee0b2 LW |
1008 | case '1': |
1009 | case '2': | |
1010 | case '3': | |
1011 | case '4': | |
1012 | case '5': | |
1013 | case '6': | |
1014 | case '7': | |
1015 | case '8': | |
1016 | case '9': | |
e521374c JP |
1017 | /* ensures variable is only digits */ |
1018 | /* ${"1foo"} fails this test (and is thus writeable) */ | |
1019 | /* added by japhy, but borrowed from is_gv_magical */ | |
1020 | ||
1021 | if (len > 1) { | |
1022 | const char *end = name + len; | |
1023 | while (--end > name) { | |
1024 | if (!isDIGIT(*end)) return gv; | |
1025 | } | |
1026 | } | |
1027 | ||
a0d0e21e LW |
1028 | ro_magicalize: |
1029 | SvREADONLY_on(GvSV(gv)); | |
93a17b20 | 1030 | magicalize: |
14befaf4 | 1031 | sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, len); |
93a17b20 LW |
1032 | break; |
1033 | ||
16070b82 | 1034 | case '\014': /* $^L */ |
463ee0b2 LW |
1035 | if (len > 1) |
1036 | break; | |
93a17b20 | 1037 | sv_setpv(GvSV(gv),"\f"); |
3280af22 | 1038 | PL_formfeed = GvSV(gv); |
93a17b20 LW |
1039 | break; |
1040 | case ';': | |
463ee0b2 LW |
1041 | if (len > 1) |
1042 | break; | |
93a17b20 LW |
1043 | sv_setpv(GvSV(gv),"\034"); |
1044 | break; | |
463ee0b2 LW |
1045 | case ']': |
1046 | if (len == 1) { | |
f86702cc | 1047 | SV *sv = GvSV(gv); |
5089c844 | 1048 | (void)SvUPGRADE(sv, SVt_PVNV); |
6a6ba966 SB |
1049 | Perl_sv_setpvf(aTHX_ sv, |
1050 | #if defined(PERL_SUBVERSION) && (PERL_SUBVERSION > 0) | |
1051 | "%8.6" | |
1052 | #else | |
1053 | "%5.3" | |
1054 | #endif | |
1055 | NVff, | |
1056 | SvNVX(PL_patchlevel)); | |
5089c844 GS |
1057 | SvNVX(sv) = SvNVX(PL_patchlevel); |
1058 | SvNOK_on(sv); | |
5089c844 | 1059 | SvREADONLY_on(sv); |
93a17b20 LW |
1060 | } |
1061 | break; | |
16070b82 GS |
1062 | case '\026': /* $^V */ |
1063 | if (len == 1) { | |
1064 | SV *sv = GvSV(gv); | |
1065 | GvSV(gv) = SvREFCNT_inc(PL_patchlevel); | |
1066 | SvREFCNT_dec(sv); | |
1067 | } | |
1068 | break; | |
79072805 | 1069 | } |
93a17b20 | 1070 | return gv; |
79072805 LW |
1071 | } |
1072 | ||
1073 | void | |
43693395 GS |
1074 | Perl_gv_fullname4(pTHX_ SV *sv, GV *gv, const char *prefix, bool keepmain) |
1075 | { | |
e27ad1f2 | 1076 | char *name; |
43693395 GS |
1077 | HV *hv = GvSTASH(gv); |
1078 | if (!hv) { | |
1079 | (void)SvOK_off(sv); | |
1080 | return; | |
1081 | } | |
1082 | sv_setpv(sv, prefix ? prefix : ""); | |
e27ad1f2 AV |
1083 | |
1084 | if (!HvNAME(hv)) | |
1085 | name = "__ANON__"; | |
1086 | else | |
1087 | name = HvNAME(hv); | |
1088 | if (keepmain || strNE(name, "main")) { | |
1089 | sv_catpv(sv,name); | |
43693395 GS |
1090 | sv_catpvn(sv,"::", 2); |
1091 | } | |
1092 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); | |
1093 | } | |
1094 | ||
1095 | void | |
864dbfa3 | 1096 | Perl_gv_fullname3(pTHX_ SV *sv, GV *gv, const char *prefix) |
79072805 | 1097 | { |
84e79d79 | 1098 | gv_fullname4(sv, gv, prefix, TRUE); |
79072805 LW |
1099 | } |
1100 | ||
1101 | void | |
43693395 GS |
1102 | Perl_gv_efullname4(pTHX_ SV *sv, GV *gv, const char *prefix, bool keepmain) |
1103 | { | |
1104 | GV *egv = GvEGV(gv); | |
1105 | if (!egv) | |
1106 | egv = gv; | |
1107 | gv_fullname4(sv, egv, prefix, keepmain); | |
1108 | } | |
1109 | ||
1110 | void | |
864dbfa3 | 1111 | Perl_gv_efullname3(pTHX_ SV *sv, GV *gv, const char *prefix) |
79072805 | 1112 | { |
84e79d79 | 1113 | gv_efullname4(sv, gv, prefix, TRUE); |
f6aff53a | 1114 | } |
1115 | ||
1116 | /* XXX compatibility with versions <= 5.003. */ | |
1117 | void | |
864dbfa3 | 1118 | Perl_gv_fullname(pTHX_ SV *sv, GV *gv) |
f6aff53a | 1119 | { |
1120 | gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
1121 | } | |
1122 | ||
1123 | /* XXX compatibility with versions <= 5.003. */ | |
1124 | void | |
864dbfa3 | 1125 | Perl_gv_efullname(pTHX_ SV *sv, GV *gv) |
f6aff53a | 1126 | { |
1127 | gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
79072805 LW |
1128 | } |
1129 | ||
1130 | IO * | |
864dbfa3 | 1131 | Perl_newIO(pTHX) |
79072805 LW |
1132 | { |
1133 | IO *io; | |
8990e307 LW |
1134 | GV *iogv; |
1135 | ||
1136 | io = (IO*)NEWSV(0,0); | |
a0d0e21e | 1137 | sv_upgrade((SV *)io,SVt_PVIO); |
8990e307 LW |
1138 | SvREFCNT(io) = 1; |
1139 | SvOBJECT_on(io); | |
081fc587 AB |
1140 | /* Clear the stashcache because a new IO could overrule a |
1141 | package name */ | |
1142 | hv_clear(PL_stashcache); | |
c9de509e | 1143 | iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV); |
5f2d631d GS |
1144 | /* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */ |
1145 | if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv)))) | |
c9de509e | 1146 | iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV); |
8990e307 | 1147 | SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv)); |
79072805 LW |
1148 | return io; |
1149 | } | |
1150 | ||
1151 | void | |
864dbfa3 | 1152 | Perl_gv_check(pTHX_ HV *stash) |
79072805 LW |
1153 | { |
1154 | register HE *entry; | |
1155 | register I32 i; | |
1156 | register GV *gv; | |
463ee0b2 LW |
1157 | HV *hv; |
1158 | ||
8990e307 LW |
1159 | if (!HvARRAY(stash)) |
1160 | return; | |
a0d0e21e | 1161 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
dc437b57 | 1162 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
1163 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && | |
b862623f | 1164 | (gv = (GV*)HeVAL(entry)) && isGV(gv) && (hv = GvHV(gv))) |
a0d0e21e | 1165 | { |
19b6c847 | 1166 | if (hv != PL_defstash && hv != stash) |
a0d0e21e LW |
1167 | gv_check(hv); /* nested package */ |
1168 | } | |
dc437b57 | 1169 | else if (isALPHA(*HeKEY(entry))) { |
1d7c1841 | 1170 | char *file; |
dc437b57 | 1171 | gv = (GV*)HeVAL(entry); |
55d729e4 | 1172 | if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv)) |
463ee0b2 | 1173 | continue; |
1d7c1841 GS |
1174 | file = GvFILE(gv); |
1175 | /* performance hack: if filename is absolute and it's a standard | |
1176 | * module, don't bother warning */ | |
1177 | if (file | |
1178 | && PERL_FILE_IS_ABSOLUTE(file) | |
6eb630b7 CN |
1179 | #ifdef MACOS_TRADITIONAL |
1180 | && (instr(file, ":lib:") | |
1181 | #else | |
1182 | && (instr(file, "/lib/") | |
1183 | #endif | |
1184 | || instr(file, ".pm"))) | |
1d7c1841 | 1185 | { |
8990e307 | 1186 | continue; |
1d7c1841 GS |
1187 | } |
1188 | CopLINE_set(PL_curcop, GvLINE(gv)); | |
1189 | #ifdef USE_ITHREADS | |
1190 | CopFILE(PL_curcop) = file; /* set for warning */ | |
1191 | #else | |
1192 | CopFILEGV(PL_curcop) = gv_fetchfile(file); | |
1193 | #endif | |
9014280d | 1194 | Perl_warner(aTHX_ packWARN(WARN_ONCE), |
599cee73 | 1195 | "Name \"%s::%s\" used only once: possible typo", |
a0d0e21e | 1196 | HvNAME(stash), GvNAME(gv)); |
463ee0b2 | 1197 | } |
79072805 LW |
1198 | } |
1199 | } | |
1200 | } | |
1201 | ||
1202 | GV * | |
864dbfa3 | 1203 | Perl_newGVgen(pTHX_ char *pack) |
79072805 | 1204 | { |
cea2e8a9 | 1205 | return gv_fetchpv(Perl_form(aTHX_ "%s::_GEN_%ld", pack, (long)PL_gensym++), |
46fc3d4c | 1206 | TRUE, SVt_PVGV); |
79072805 LW |
1207 | } |
1208 | ||
1209 | /* hopefully this is only called on local symbol table entries */ | |
1210 | ||
1211 | GP* | |
864dbfa3 | 1212 | Perl_gp_ref(pTHX_ GP *gp) |
79072805 | 1213 | { |
1d7c1841 GS |
1214 | if (!gp) |
1215 | return (GP*)NULL; | |
79072805 | 1216 | gp->gp_refcnt++; |
44a8e56a | 1217 | if (gp->gp_cv) { |
1218 | if (gp->gp_cvgen) { | |
1219 | /* multi-named GPs cannot be used for method cache */ | |
1220 | SvREFCNT_dec(gp->gp_cv); | |
1221 | gp->gp_cv = Nullcv; | |
1222 | gp->gp_cvgen = 0; | |
1223 | } | |
1224 | else { | |
1225 | /* Adding a new name to a subroutine invalidates method cache */ | |
3280af22 | 1226 | PL_sub_generation++; |
44a8e56a | 1227 | } |
1228 | } | |
79072805 | 1229 | return gp; |
79072805 LW |
1230 | } |
1231 | ||
1232 | void | |
864dbfa3 | 1233 | Perl_gp_free(pTHX_ GV *gv) |
79072805 | 1234 | { |
79072805 LW |
1235 | GP* gp; |
1236 | ||
1237 | if (!gv || !(gp = GvGP(gv))) | |
1238 | return; | |
f248d071 GS |
1239 | if (gp->gp_refcnt == 0) { |
1240 | if (ckWARN_d(WARN_INTERNAL)) | |
9014280d | 1241 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
f248d071 | 1242 | "Attempt to free unreferenced glob pointers"); |
79072805 LW |
1243 | return; |
1244 | } | |
44a8e56a | 1245 | if (gp->gp_cv) { |
1246 | /* Deleting the name of a subroutine invalidates method cache */ | |
3280af22 | 1247 | PL_sub_generation++; |
44a8e56a | 1248 | } |
748a9306 LW |
1249 | if (--gp->gp_refcnt > 0) { |
1250 | if (gp->gp_egv == gv) | |
1251 | gp->gp_egv = 0; | |
79072805 | 1252 | return; |
748a9306 | 1253 | } |
79072805 | 1254 | |
13207a71 JH |
1255 | if (gp->gp_sv) SvREFCNT_dec(gp->gp_sv); |
1256 | if (gp->gp_sv) SvREFCNT_dec(gp->gp_av); | |
1257 | if (gp->gp_hv) { | |
1258 | if (PL_stashcache && HvNAME(gp->gp_hv)) | |
1259 | hv_delete(PL_stashcache, | |
1260 | HvNAME(gp->gp_hv), strlen(HvNAME(gp->gp_hv)), | |
1261 | G_DISCARD); | |
1262 | SvREFCNT_dec(gp->gp_hv); | |
1263 | } | |
1264 | if (gp->gp_io) SvREFCNT_dec(gp->gp_io); | |
1265 | if (gp->gp_cv) SvREFCNT_dec(gp->gp_cv); | |
1266 | if (gp->gp_form) SvREFCNT_dec(gp->gp_form); | |
748a9306 | 1267 | |
79072805 LW |
1268 | Safefree(gp); |
1269 | GvGP(gv) = 0; | |
1270 | } | |
1271 | ||
d460ef45 NIS |
1272 | int |
1273 | Perl_magic_freeovrld(pTHX_ SV *sv, MAGIC *mg) | |
1274 | { | |
1275 | AMT *amtp = (AMT*)mg->mg_ptr; | |
1276 | if (amtp && AMT_AMAGIC(amtp)) { | |
1277 | int i; | |
1278 | for (i = 1; i < NofAMmeth; i++) { | |
1279 | CV *cv = amtp->table[i]; | |
1280 | if (cv != Nullcv) { | |
1281 | SvREFCNT_dec((SV *) cv); | |
1282 | amtp->table[i] = Nullcv; | |
1283 | } | |
1284 | } | |
1285 | } | |
1286 | return 0; | |
1287 | } | |
1288 | ||
a0d0e21e LW |
1289 | /* Updates and caches the CV's */ |
1290 | ||
1291 | bool | |
864dbfa3 | 1292 | Perl_Gv_AMupdate(pTHX_ HV *stash) |
a0d0e21e | 1293 | { |
a0d0e21e LW |
1294 | GV* gv; |
1295 | CV* cv; | |
14befaf4 | 1296 | MAGIC* mg=mg_find((SV*)stash, PERL_MAGIC_overload_table); |
8ac85365 | 1297 | AMT *amtp = (mg) ? (AMT*)mg->mg_ptr: (AMT *) NULL; |
a6006777 | 1298 | AMT amt; |
a0d0e21e | 1299 | |
3280af22 NIS |
1300 | if (mg && amtp->was_ok_am == PL_amagic_generation |
1301 | && amtp->was_ok_sub == PL_sub_generation) | |
eb160463 | 1302 | return (bool)AMT_OVERLOADED(amtp); |
14befaf4 | 1303 | sv_unmagic((SV*)stash, PERL_MAGIC_overload_table); |
a0d0e21e | 1304 | |
cea2e8a9 | 1305 | DEBUG_o( Perl_deb(aTHX_ "Recalcing overload magic in package %s\n",HvNAME(stash)) ); |
a0d0e21e | 1306 | |
d460ef45 | 1307 | Zero(&amt,1,AMT); |
3280af22 NIS |
1308 | amt.was_ok_am = PL_amagic_generation; |
1309 | amt.was_ok_sub = PL_sub_generation; | |
a6006777 | 1310 | amt.fallback = AMGfallNO; |
1311 | amt.flags = 0; | |
1312 | ||
a6006777 | 1313 | { |
32251b26 IZ |
1314 | int filled = 0, have_ovl = 0; |
1315 | int i, lim = 1; | |
a6006777 | 1316 | SV* sv = NULL; |
a6006777 | 1317 | |
22c35a8c | 1318 | /* Work with "fallback" key, which we assume to be first in PL_AMG_names */ |
a6006777 | 1319 | |
89ffc314 IZ |
1320 | /* Try to find via inheritance. */ |
1321 | gv = gv_fetchmeth(stash, PL_AMG_names[0], 2, -1); | |
1322 | if (gv) | |
1323 | sv = GvSV(gv); | |
1324 | ||
1325 | if (!gv) | |
32251b26 | 1326 | lim = DESTROY_amg; /* Skip overloading entries. */ |
89ffc314 IZ |
1327 | else if (SvTRUE(sv)) |
1328 | amt.fallback=AMGfallYES; | |
1329 | else if (SvOK(sv)) | |
1330 | amt.fallback=AMGfallNEVER; | |
a6006777 | 1331 | |
32251b26 IZ |
1332 | for (i = 1; i < lim; i++) |
1333 | amt.table[i] = Nullcv; | |
1334 | for (; i < NofAMmeth; i++) { | |
c8ce92fc | 1335 | char *cooky = (char*)PL_AMG_names[i]; |
32251b26 IZ |
1336 | /* Human-readable form, for debugging: */ |
1337 | char *cp = (i >= DESTROY_amg ? cooky : AMG_id2name(i)); | |
89ffc314 IZ |
1338 | STRLEN l = strlen(cooky); |
1339 | ||
cea2e8a9 | 1340 | DEBUG_o( Perl_deb(aTHX_ "Checking overloading of `%s' in package `%.256s'\n", |
44a8e56a | 1341 | cp, HvNAME(stash)) ); |
611c1e95 IZ |
1342 | /* don't fill the cache while looking up! |
1343 | Creation of inheritance stubs in intermediate packages may | |
1344 | conflict with the logic of runtime method substitution. | |
1345 | Indeed, for inheritance A -> B -> C, if C overloads "+0", | |
1346 | then we could have created stubs for "(+0" in A and C too. | |
1347 | But if B overloads "bool", we may want to use it for | |
1348 | numifying instead of C's "+0". */ | |
1349 | if (i >= DESTROY_amg) | |
1350 | gv = Perl_gv_fetchmeth_autoload(aTHX_ stash, cooky, l, 0); | |
1351 | else /* Autoload taken care of below */ | |
1352 | gv = Perl_gv_fetchmeth(aTHX_ stash, cooky, l, -1); | |
46fc3d4c | 1353 | cv = 0; |
89ffc314 | 1354 | if (gv && (cv = GvCV(gv))) { |
44a8e56a | 1355 | if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil") |
1356 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) { | |
611c1e95 IZ |
1357 | /* This is a hack to support autoloading..., while |
1358 | knowing *which* methods were declared as overloaded. */ | |
44a8e56a | 1359 | /* GvSV contains the name of the method. */ |
4ea42e7f | 1360 | GV *ngv = Nullgv; |
44a8e56a | 1361 | |
84c133a0 RB |
1362 | DEBUG_o( Perl_deb(aTHX_ "Resolving method `%"SVf256\ |
1363 | "' for overloaded `%s' in package `%.256s'\n", | |
35c1215d | 1364 | GvSV(gv), cp, HvNAME(stash)) ); |
b267980d | 1365 | if (!SvPOK(GvSV(gv)) |
dc848c6f | 1366 | || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)), |
1367 | FALSE))) | |
1368 | { | |
44a8e56a | 1369 | /* Can be an import stub (created by `can'). */ |
35c1215d NC |
1370 | SV *gvsv = GvSV(gv); |
1371 | const char *name = SvPOK(gvsv) ? SvPVX(gvsv) : "???"; | |
84c133a0 RB |
1372 | Perl_croak(aTHX_ "%s method `%.256s' overloading `%s' "\ |
1373 | "in package `%.256s'", | |
35c1215d NC |
1374 | (GvCVGEN(gv) ? "Stub found while resolving" |
1375 | : "Can't resolve"), | |
1376 | name, cp, HvNAME(stash)); | |
44a8e56a | 1377 | } |
dc848c6f | 1378 | cv = GvCV(gv = ngv); |
44a8e56a | 1379 | } |
cea2e8a9 | 1380 | DEBUG_o( Perl_deb(aTHX_ "Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n", |
44a8e56a | 1381 | cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))), |
1382 | GvNAME(CvGV(cv))) ); | |
1383 | filled = 1; | |
32251b26 IZ |
1384 | if (i < DESTROY_amg) |
1385 | have_ovl = 1; | |
611c1e95 IZ |
1386 | } else if (gv) { /* Autoloaded... */ |
1387 | cv = (CV*)gv; | |
1388 | filled = 1; | |
44a8e56a | 1389 | } |
a6006777 | 1390 | amt.table[i]=(CV*)SvREFCNT_inc(cv); |
a0d0e21e | 1391 | } |
a0d0e21e | 1392 | if (filled) { |
a6006777 | 1393 | AMT_AMAGIC_on(&amt); |
32251b26 IZ |
1394 | if (have_ovl) |
1395 | AMT_OVERLOADED_on(&amt); | |
14befaf4 DM |
1396 | sv_magic((SV*)stash, 0, PERL_MAGIC_overload_table, |
1397 | (char*)&amt, sizeof(AMT)); | |
32251b26 | 1398 | return have_ovl; |
a0d0e21e LW |
1399 | } |
1400 | } | |
a6006777 | 1401 | /* Here we have no table: */ |
9cbac4c7 | 1402 | /* no_table: */ |
a6006777 | 1403 | AMT_AMAGIC_off(&amt); |
14befaf4 DM |
1404 | sv_magic((SV*)stash, 0, PERL_MAGIC_overload_table, |
1405 | (char*)&amt, sizeof(AMTS)); | |
a0d0e21e LW |
1406 | return FALSE; |
1407 | } | |
1408 | ||
32251b26 IZ |
1409 | |
1410 | CV* | |
1411 | Perl_gv_handler(pTHX_ HV *stash, I32 id) | |
1412 | { | |
3f8f4626 | 1413 | MAGIC *mg; |
32251b26 | 1414 | AMT *amtp; |
3ad83ce7 | 1415 | CV *ret; |
32251b26 | 1416 | |
e27ad1f2 | 1417 | if (!stash || !HvNAME(stash)) |
3f8f4626 | 1418 | return Nullcv; |
14befaf4 | 1419 | mg = mg_find((SV*)stash, PERL_MAGIC_overload_table); |
32251b26 IZ |
1420 | if (!mg) { |
1421 | do_update: | |
1422 | Gv_AMupdate(stash); | |
14befaf4 | 1423 | mg = mg_find((SV*)stash, PERL_MAGIC_overload_table); |
32251b26 IZ |
1424 | } |
1425 | amtp = (AMT*)mg->mg_ptr; | |
1426 | if ( amtp->was_ok_am != PL_amagic_generation | |
1427 | || amtp->was_ok_sub != PL_sub_generation ) | |
1428 | goto do_update; | |
3ad83ce7 AMS |
1429 | if (AMT_AMAGIC(amtp)) { |
1430 | ret = amtp->table[id]; | |
1431 | if (ret && isGV(ret)) { /* Autoloading stab */ | |
1432 | /* Passing it through may have resulted in a warning | |
1433 | "Inherited AUTOLOAD for a non-method deprecated", since | |
1434 | our caller is going through a function call, not a method call. | |
1435 | So return the CV for AUTOLOAD, setting $AUTOLOAD. */ | |
1436 | GV *gv = gv_fetchmethod(stash, (char*)PL_AMG_names[id]); | |
1437 | ||
1438 | if (gv && GvCV(gv)) | |
1439 | return GvCV(gv); | |
1440 | } | |
1441 | return ret; | |
1442 | } | |
1443 | ||
32251b26 IZ |
1444 | return Nullcv; |
1445 | } | |
1446 | ||
1447 | ||
a0d0e21e | 1448 | SV* |
864dbfa3 | 1449 | Perl_amagic_call(pTHX_ SV *left, SV *right, int method, int flags) |
a0d0e21e | 1450 | { |
b267980d | 1451 | MAGIC *mg; |
9c5ffd7c | 1452 | CV *cv=NULL; |
a0d0e21e | 1453 | CV **cvp=NULL, **ocvp=NULL; |
9c5ffd7c | 1454 | AMT *amtp=NULL, *oamtp=NULL; |
497b47a8 | 1455 | int off=0, off1, lr=0, assign=AMGf_assign & flags, notfound=0; |
ee239bfe | 1456 | int postpr = 0, force_cpy = 0, assignshift = assign ? 1 : 0; |
497b47a8 JH |
1457 | #ifdef DEBUGGING |
1458 | int fl=0; | |
497b47a8 | 1459 | #endif |
25716404 | 1460 | HV* stash=NULL; |
a0d0e21e | 1461 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) |
25716404 GS |
1462 | && (stash = SvSTASH(SvRV(left))) |
1463 | && (mg = mg_find((SV*)stash, PERL_MAGIC_overload_table)) | |
b267980d | 1464 | && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
a6006777 | 1465 | ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table |
8ac85365 | 1466 | : (CV **) NULL)) |
b267980d | 1467 | && ((cv = cvp[off=method+assignshift]) |
748a9306 LW |
1468 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to |
1469 | * usual method */ | |
497b47a8 JH |
1470 | ( |
1471 | #ifdef DEBUGGING | |
1472 | fl = 1, | |
1473 | #endif | |
1474 | cv = cvp[off=method])))) { | |
a0d0e21e LW |
1475 | lr = -1; /* Call method for left argument */ |
1476 | } else { | |
1477 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { | |
1478 | int logic; | |
1479 | ||
1480 | /* look for substituted methods */ | |
ee239bfe | 1481 | /* In all the covered cases we should be called with assign==0. */ |
a0d0e21e LW |
1482 | switch (method) { |
1483 | case inc_amg: | |
ee239bfe IZ |
1484 | force_cpy = 1; |
1485 | if ((cv = cvp[off=add_ass_amg]) | |
1486 | || ((cv = cvp[off = add_amg]) && (force_cpy = 0, postpr = 1))) { | |
3280af22 | 1487 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1488 | } |
1489 | break; | |
1490 | case dec_amg: | |
ee239bfe IZ |
1491 | force_cpy = 1; |
1492 | if ((cv = cvp[off = subtr_ass_amg]) | |
1493 | || ((cv = cvp[off = subtr_amg]) && (force_cpy = 0, postpr=1))) { | |
3280af22 | 1494 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1495 | } |
1496 | break; | |
1497 | case bool__amg: | |
1498 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); | |
1499 | break; | |
1500 | case numer_amg: | |
1501 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); | |
1502 | break; | |
1503 | case string_amg: | |
1504 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); | |
1505 | break; | |
dc437b57 | 1506 | case not_amg: |
b267980d | 1507 | (void)((cv = cvp[off=bool__amg]) |
dc437b57 | 1508 | || (cv = cvp[off=numer_amg]) |
1509 | || (cv = cvp[off=string_amg])); | |
1510 | postpr = 1; | |
1511 | break; | |
748a9306 LW |
1512 | case copy_amg: |
1513 | { | |
76e3520e GS |
1514 | /* |
1515 | * SV* ref causes confusion with the interpreter variable of | |
1516 | * the same name | |
1517 | */ | |
1518 | SV* tmpRef=SvRV(left); | |
1519 | if (!SvROK(tmpRef) && SvTYPE(tmpRef) <= SVt_PVMG) { | |
fc36a67e | 1520 | /* |
1521 | * Just to be extra cautious. Maybe in some | |
1522 | * additional cases sv_setsv is safe, too. | |
1523 | */ | |
76e3520e | 1524 | SV* newref = newSVsv(tmpRef); |
748a9306 | 1525 | SvOBJECT_on(newref); |
76e3520e | 1526 | SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(tmpRef)); |
748a9306 LW |
1527 | return newref; |
1528 | } | |
1529 | } | |
1530 | break; | |
a0d0e21e | 1531 | case abs_amg: |
b267980d | 1532 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e | 1533 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
748a9306 | 1534 | SV* nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e | 1535 | if (off1==lt_amg) { |
748a9306 | 1536 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1537 | lt_amg,AMGf_noright); |
1538 | logic = SvTRUE(lessp); | |
1539 | } else { | |
748a9306 | 1540 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1541 | ncmp_amg,AMGf_noright); |
1542 | logic = (SvNV(lessp) < 0); | |
1543 | } | |
1544 | if (logic) { | |
1545 | if (off==subtr_amg) { | |
1546 | right = left; | |
748a9306 | 1547 | left = nullsv; |
a0d0e21e LW |
1548 | lr = 1; |
1549 | } | |
1550 | } else { | |
1551 | return left; | |
1552 | } | |
1553 | } | |
1554 | break; | |
1555 | case neg_amg: | |
155aba94 | 1556 | if ((cv = cvp[off=subtr_amg])) { |
a0d0e21e LW |
1557 | right = left; |
1558 | left = sv_2mortal(newSViv(0)); | |
1559 | lr = 1; | |
1560 | } | |
1561 | break; | |
f216259d | 1562 | case int_amg: |
f5284f61 | 1563 | case iter_amg: /* XXXX Eventually should do to_gv. */ |
b267980d NIS |
1564 | /* FAIL safe */ |
1565 | return NULL; /* Delegate operation to standard mechanisms. */ | |
1566 | break; | |
f5284f61 IZ |
1567 | case to_sv_amg: |
1568 | case to_av_amg: | |
1569 | case to_hv_amg: | |
1570 | case to_gv_amg: | |
1571 | case to_cv_amg: | |
1572 | /* FAIL safe */ | |
b267980d | 1573 | return left; /* Delegate operation to standard mechanisms. */ |
f5284f61 | 1574 | break; |
a0d0e21e LW |
1575 | default: |
1576 | goto not_found; | |
1577 | } | |
1578 | if (!cv) goto not_found; | |
1579 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) | |
25716404 GS |
1580 | && (stash = SvSTASH(SvRV(right))) |
1581 | && (mg = mg_find((SV*)stash, PERL_MAGIC_overload_table)) | |
b267980d | 1582 | && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
a6006777 | 1583 | ? (amtp = (AMT*)mg->mg_ptr)->table |
8ac85365 | 1584 | : (CV **) NULL)) |
a0d0e21e LW |
1585 | && (cv = cvp[off=method])) { /* Method for right |
1586 | * argument found */ | |
1587 | lr=1; | |
b267980d NIS |
1588 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
1589 | && (cvp=ocvp) && (lr = -1)) | |
a0d0e21e LW |
1590 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
1591 | && !(flags & AMGf_unary)) { | |
1592 | /* We look for substitution for | |
1593 | * comparison operations and | |
fc36a67e | 1594 | * concatenation */ |
a0d0e21e LW |
1595 | if (method==concat_amg || method==concat_ass_amg |
1596 | || method==repeat_amg || method==repeat_ass_amg) { | |
1597 | return NULL; /* Delegate operation to string conversion */ | |
1598 | } | |
1599 | off = -1; | |
1600 | switch (method) { | |
1601 | case lt_amg: | |
1602 | case le_amg: | |
1603 | case gt_amg: | |
1604 | case ge_amg: | |
1605 | case eq_amg: | |
1606 | case ne_amg: | |
1607 | postpr = 1; off=ncmp_amg; break; | |
1608 | case slt_amg: | |
1609 | case sle_amg: | |
1610 | case sgt_amg: | |
1611 | case sge_amg: | |
1612 | case seq_amg: | |
1613 | case sne_amg: | |
1614 | postpr = 1; off=scmp_amg; break; | |
1615 | } | |
1616 | if (off != -1) cv = cvp[off]; | |
1617 | if (!cv) { | |
1618 | goto not_found; | |
1619 | } | |
1620 | } else { | |
a6006777 | 1621 | not_found: /* No method found, either report or croak */ |
b267980d NIS |
1622 | switch (method) { |
1623 | case to_sv_amg: | |
1624 | case to_av_amg: | |
1625 | case to_hv_amg: | |
1626 | case to_gv_amg: | |
1627 | case to_cv_amg: | |
1628 | /* FAIL safe */ | |
1629 | return left; /* Delegate operation to standard mechanisms. */ | |
1630 | break; | |
1631 | } | |
a0d0e21e LW |
1632 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
1633 | notfound = 1; lr = -1; | |
1634 | } else if (cvp && (cv=cvp[nomethod_amg])) { | |
1635 | notfound = 1; lr = 1; | |
1636 | } else { | |
46fc3d4c | 1637 | SV *msg; |
774d564b | 1638 | if (off==-1) off=method; |
b267980d | 1639 | msg = sv_2mortal(Perl_newSVpvf(aTHX_ |
46fc3d4c | 1640 | "Operation `%s': no method found,%sargument %s%s%s%s", |
89ffc314 | 1641 | AMG_id2name(method + assignshift), |
e7ea3e70 | 1642 | (flags & AMGf_unary ? " " : "\n\tleft "), |
b267980d | 1643 | SvAMAGIC(left)? |
a0d0e21e LW |
1644 | "in overloaded package ": |
1645 | "has no overloaded magic", | |
b267980d | 1646 | SvAMAGIC(left)? |
a0d0e21e LW |
1647 | HvNAME(SvSTASH(SvRV(left))): |
1648 | "", | |
b267980d | 1649 | SvAMAGIC(right)? |
e7ea3e70 | 1650 | ",\n\tright argument in overloaded package ": |
b267980d | 1651 | (flags & AMGf_unary |
e7ea3e70 IZ |
1652 | ? "" |
1653 | : ",\n\tright argument has no overloaded magic"), | |
b267980d | 1654 | SvAMAGIC(right)? |
a0d0e21e | 1655 | HvNAME(SvSTASH(SvRV(right))): |
46fc3d4c | 1656 | "")); |
a0d0e21e | 1657 | if (amtp && amtp->fallback >= AMGfallYES) { |
cea2e8a9 | 1658 | DEBUG_o( Perl_deb(aTHX_ "%s", SvPVX(msg)) ); |
a0d0e21e | 1659 | } else { |
894356b3 | 1660 | Perl_croak(aTHX_ "%"SVf, msg); |
a0d0e21e LW |
1661 | } |
1662 | return NULL; | |
1663 | } | |
ee239bfe | 1664 | force_cpy = force_cpy || assign; |
a0d0e21e LW |
1665 | } |
1666 | } | |
497b47a8 | 1667 | #ifdef DEBUGGING |
a0d0e21e | 1668 | if (!notfound) { |
497b47a8 JH |
1669 | DEBUG_o(Perl_deb(aTHX_ |
1670 | "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n", | |
1671 | AMG_id2name(off), | |
1672 | method+assignshift==off? "" : | |
1673 | " (initially `", | |
1674 | method+assignshift==off? "" : | |
1675 | AMG_id2name(method+assignshift), | |
1676 | method+assignshift==off? "" : "')", | |
1677 | flags & AMGf_unary? "" : | |
1678 | lr==1 ? " for right argument": " for left argument", | |
1679 | flags & AMGf_unary? " for argument" : "", | |
25716404 | 1680 | stash ? HvNAME(stash) : "null", |
497b47a8 | 1681 | fl? ",\n\tassignment variant used": "") ); |
ee239bfe | 1682 | } |
497b47a8 | 1683 | #endif |
748a9306 LW |
1684 | /* Since we use shallow copy during assignment, we need |
1685 | * to dublicate the contents, probably calling user-supplied | |
1686 | * version of copy operator | |
1687 | */ | |
ee239bfe IZ |
1688 | /* We need to copy in following cases: |
1689 | * a) Assignment form was called. | |
1690 | * assignshift==1, assign==T, method + 1 == off | |
1691 | * b) Increment or decrement, called directly. | |
1692 | * assignshift==0, assign==0, method + 0 == off | |
1693 | * c) Increment or decrement, translated to assignment add/subtr. | |
b267980d | 1694 | * assignshift==0, assign==T, |
ee239bfe IZ |
1695 | * force_cpy == T |
1696 | * d) Increment or decrement, translated to nomethod. | |
b267980d | 1697 | * assignshift==0, assign==0, |
ee239bfe IZ |
1698 | * force_cpy == T |
1699 | * e) Assignment form translated to nomethod. | |
1700 | * assignshift==1, assign==T, method + 1 != off | |
1701 | * force_cpy == T | |
1702 | */ | |
1703 | /* off is method, method+assignshift, or a result of opcode substitution. | |
1704 | * In the latter case assignshift==0, so only notfound case is important. | |
1705 | */ | |
1706 | if (( (method + assignshift == off) | |
1707 | && (assign || (method == inc_amg) || (method == dec_amg))) | |
1708 | || force_cpy) | |
1709 | RvDEEPCP(left); | |
a0d0e21e LW |
1710 | { |
1711 | dSP; | |
1712 | BINOP myop; | |
1713 | SV* res; | |
54310121 | 1714 | bool oldcatch = CATCH_GET; |
a0d0e21e | 1715 | |
54310121 | 1716 | CATCH_SET(TRUE); |
a0d0e21e LW |
1717 | Zero(&myop, 1, BINOP); |
1718 | myop.op_last = (OP *) &myop; | |
1719 | myop.op_next = Nullop; | |
54310121 | 1720 | myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED; |
a0d0e21e | 1721 | |
e788e7d3 | 1722 | PUSHSTACKi(PERLSI_OVERLOAD); |
a0d0e21e | 1723 | ENTER; |
462e5cf6 | 1724 | SAVEOP(); |
533c011a | 1725 | PL_op = (OP *) &myop; |
3280af22 | 1726 | if (PERLDB_SUB && PL_curstash != PL_debstash) |
533c011a | 1727 | PL_op->op_private |= OPpENTERSUB_DB; |
a0d0e21e | 1728 | PUTBACK; |
cea2e8a9 | 1729 | pp_pushmark(); |
a0d0e21e | 1730 | |
924508f0 | 1731 | EXTEND(SP, notfound + 5); |
a0d0e21e LW |
1732 | PUSHs(lr>0? right: left); |
1733 | PUSHs(lr>0? left: right); | |
3280af22 | 1734 | PUSHs( lr > 0 ? &PL_sv_yes : ( assign ? &PL_sv_undef : &PL_sv_no )); |
a0d0e21e | 1735 | if (notfound) { |
89ffc314 | 1736 | PUSHs( sv_2mortal(newSVpv(AMG_id2name(method + assignshift),0))); |
a0d0e21e LW |
1737 | } |
1738 | PUSHs((SV*)cv); | |
1739 | PUTBACK; | |
1740 | ||
155aba94 | 1741 | if ((PL_op = Perl_pp_entersub(aTHX))) |
cea2e8a9 | 1742 | CALLRUNOPS(aTHX); |
a0d0e21e LW |
1743 | LEAVE; |
1744 | SPAGAIN; | |
1745 | ||
1746 | res=POPs; | |
ebafeae7 | 1747 | PUTBACK; |
d3acc0f7 | 1748 | POPSTACK; |
54310121 | 1749 | CATCH_SET(oldcatch); |
a0d0e21e | 1750 | |
a0d0e21e | 1751 | if (postpr) { |
9c5ffd7c | 1752 | int ans=0; |
a0d0e21e LW |
1753 | switch (method) { |
1754 | case le_amg: | |
1755 | case sle_amg: | |
1756 | ans=SvIV(res)<=0; break; | |
1757 | case lt_amg: | |
1758 | case slt_amg: | |
1759 | ans=SvIV(res)<0; break; | |
1760 | case ge_amg: | |
1761 | case sge_amg: | |
1762 | ans=SvIV(res)>=0; break; | |
1763 | case gt_amg: | |
1764 | case sgt_amg: | |
1765 | ans=SvIV(res)>0; break; | |
1766 | case eq_amg: | |
1767 | case seq_amg: | |
1768 | ans=SvIV(res)==0; break; | |
1769 | case ne_amg: | |
1770 | case sne_amg: | |
1771 | ans=SvIV(res)!=0; break; | |
1772 | case inc_amg: | |
1773 | case dec_amg: | |
bbce6d69 | 1774 | SvSetSV(left,res); return left; |
dc437b57 | 1775 | case not_amg: |
fe7ac86a | 1776 | ans=!SvTRUE(res); break; |
a0d0e21e | 1777 | } |
54310121 | 1778 | return boolSV(ans); |
748a9306 LW |
1779 | } else if (method==copy_amg) { |
1780 | if (!SvROK(res)) { | |
cea2e8a9 | 1781 | Perl_croak(aTHX_ "Copy method did not return a reference"); |
748a9306 LW |
1782 | } |
1783 | return SvREFCNT_inc(SvRV(res)); | |
a0d0e21e LW |
1784 | } else { |
1785 | return res; | |
1786 | } | |
1787 | } | |
1788 | } | |
c9d5ac95 GS |
1789 | |
1790 | /* | |
1791 | =for apidoc is_gv_magical | |
1792 | ||
1793 | Returns C<TRUE> if given the name of a magical GV. | |
1794 | ||
1795 | Currently only useful internally when determining if a GV should be | |
1796 | created even in rvalue contexts. | |
1797 | ||
1798 | C<flags> is not used at present but available for future extension to | |
1799 | allow selecting particular classes of magical variable. | |
1800 | ||
1801 | =cut | |
1802 | */ | |
1803 | bool | |
1804 | Perl_is_gv_magical(pTHX_ char *name, STRLEN len, U32 flags) | |
1805 | { | |
1806 | if (!len) | |
1807 | return FALSE; | |
1808 | ||
1809 | switch (*name) { | |
1810 | case 'I': | |
1811 | if (len == 3 && strEQ(name, "ISA")) | |
1812 | goto yes; | |
1813 | break; | |
1814 | case 'O': | |
1815 | if (len == 8 && strEQ(name, "OVERLOAD")) | |
1816 | goto yes; | |
1817 | break; | |
1818 | case 'S': | |
1819 | if (len == 3 && strEQ(name, "SIG")) | |
1820 | goto yes; | |
1821 | break; | |
ac27b0f5 NIS |
1822 | case '\017': /* $^O & $^OPEN */ |
1823 | if (len == 1 | |
563aca73 | 1824 | || (len == 4 && strEQ(name, "\017PEN"))) |
ac27b0f5 NIS |
1825 | { |
1826 | goto yes; | |
1827 | } | |
1828 | break; | |
fde18df1 | 1829 | case '\025': |
a05d7ebb | 1830 | if (len > 1 && strEQ(name, "\025NICODE")) |
fde18df1 | 1831 | goto yes; |
c9d5ac95 GS |
1832 | case '\027': /* $^W & $^WARNING_BITS */ |
1833 | if (len == 1 | |
1834 | || (len == 12 && strEQ(name, "\027ARNING_BITS")) | |
fde18df1 | 1835 | ) |
c9d5ac95 GS |
1836 | { |
1837 | goto yes; | |
1838 | } | |
1839 | break; | |
1840 | ||
1841 | case '&': | |
1842 | case '`': | |
1843 | case '\'': | |
1844 | case ':': | |
1845 | case '?': | |
1846 | case '!': | |
1847 | case '-': | |
1848 | case '#': | |
c9d5ac95 GS |
1849 | case '[': |
1850 | case '^': | |
1851 | case '~': | |
1852 | case '=': | |
1853 | case '%': | |
1854 | case '.': | |
1855 | case '(': | |
1856 | case ')': | |
1857 | case '<': | |
1858 | case '>': | |
1859 | case ',': | |
1860 | case '\\': | |
1861 | case '/': | |
1862 | case '|': | |
1863 | case '+': | |
1864 | case ';': | |
1865 | case ']': | |
1866 | case '\001': /* $^A */ | |
1867 | case '\003': /* $^C */ | |
1868 | case '\004': /* $^D */ | |
1869 | case '\005': /* $^E */ | |
1870 | case '\006': /* $^F */ | |
1871 | case '\010': /* $^H */ | |
1872 | case '\011': /* $^I, NOT \t in EBCDIC */ | |
1873 | case '\014': /* $^L */ | |
a01268b5 | 1874 | case '\016': /* $^N */ |
c9d5ac95 GS |
1875 | case '\020': /* $^P */ |
1876 | case '\023': /* $^S */ | |
c9d5ac95 GS |
1877 | case '\026': /* $^V */ |
1878 | if (len == 1) | |
1879 | goto yes; | |
1880 | break; | |
eb27b65e AMS |
1881 | case '\024': /* $^T, ${^TAINT} */ |
1882 | if (len == 1 || strEQ(name, "\024AINT")) | |
1883 | goto yes; | |
1884 | break; | |
c9d5ac95 GS |
1885 | case '1': |
1886 | case '2': | |
1887 | case '3': | |
1888 | case '4': | |
1889 | case '5': | |
1890 | case '6': | |
1891 | case '7': | |
1892 | case '8': | |
1893 | case '9': | |
1894 | if (len > 1) { | |
1895 | char *end = name + len; | |
1896 | while (--end > name) { | |
1897 | if (!isDIGIT(*end)) | |
1898 | return FALSE; | |
1899 | } | |
1900 | } | |
1901 | yes: | |
1902 | return TRUE; | |
1903 | default: | |
1904 | break; | |
1905 | } | |
1906 | return FALSE; | |
1907 | } |