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 | 763 | if (add) { |
608b3986 | 764 | register SV *err = Perl_mess(aTHX_ |
5a844595 GS |
765 | "Global symbol \"%s%s\" requires explicit package name", |
766 | (sv_type == SVt_PV ? "$" | |
767 | : sv_type == SVt_PVAV ? "@" | |
768 | : sv_type == SVt_PVHV ? "%" | |
608b3986 AE |
769 | : ""), name); |
770 | if (USE_UTF8_IN_NAMES) | |
771 | SvUTF8_on(err); | |
772 | qerror(err); | |
d7aacf4e | 773 | stash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV)); |
a0d0e21e | 774 | } |
d7aacf4e RGS |
775 | else |
776 | return Nullgv; | |
a0d0e21e LW |
777 | } |
778 | ||
779 | if (!SvREFCNT(stash)) /* symbol table under destruction */ | |
780 | return Nullgv; | |
781 | ||
79072805 | 782 | gvp = (GV**)hv_fetch(stash,name,len,add); |
3280af22 | 783 | if (!gvp || *gvp == (GV*)&PL_sv_undef) |
79072805 LW |
784 | return Nullgv; |
785 | gv = *gvp; | |
786 | if (SvTYPE(gv) == SVt_PVGV) { | |
a0d0e21e | 787 | if (add) { |
a5f75d66 | 788 | GvMULTI_on(gv); |
a0d0e21e | 789 | gv_init_sv(gv, sv_type); |
d2c93421 RH |
790 | if (*name=='!' && sv_type == SVt_PVHV && len==1) |
791 | require_errno(gv); | |
a0d0e21e | 792 | } |
79072805 | 793 | return gv; |
55d729e4 GS |
794 | } else if (add & GV_NOINIT) { |
795 | return gv; | |
79072805 | 796 | } |
93a17b20 LW |
797 | |
798 | /* Adding a new symbol */ | |
799 | ||
0453d815 | 800 | if (add & GV_ADDWARN && ckWARN_d(WARN_INTERNAL)) |
9014280d | 801 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Had to create %s unexpectedly", nambeg); |
55d729e4 | 802 | gv_init(gv, stash, name, len, add & GV_ADDMULTI); |
a0d0e21e | 803 | gv_init_sv(gv, sv_type); |
93a17b20 | 804 | |
7272584d PM |
805 | if (isALPHA(name[0]) && ! (isLEXWARN_on ? ckWARN(WARN_ONCE) |
806 | : (PL_dowarn & G_WARN_ON ) ) ) | |
0453d815 PM |
807 | GvMULTI_on(gv) ; |
808 | ||
93a17b20 LW |
809 | /* set up magic where warranted */ |
810 | switch (*name) { | |
a0d0e21e LW |
811 | case 'A': |
812 | if (strEQ(name, "ARGV")) { | |
813 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; | |
814 | } | |
815 | break; | |
a0d0e21e LW |
816 | case 'E': |
817 | if (strnEQ(name, "EXPORT", 6)) | |
a5f75d66 | 818 | GvMULTI_on(gv); |
a0d0e21e | 819 | break; |
463ee0b2 LW |
820 | case 'I': |
821 | if (strEQ(name, "ISA")) { | |
822 | AV* av = GvAVn(gv); | |
a5f75d66 | 823 | GvMULTI_on(gv); |
14befaf4 | 824 | sv_magic((SV*)av, (SV*)gv, PERL_MAGIC_isa, Nullch, 0); |
93965878 | 825 | /* NOTE: No support for tied ISA */ |
55d729e4 GS |
826 | if ((add & GV_ADDMULTI) && strEQ(nambeg,"AnyDBM_File::ISA") |
827 | && AvFILLp(av) == -1) | |
85e6fe83 | 828 | { |
a0d0e21e | 829 | char *pname; |
79cb57f6 | 830 | av_push(av, newSVpvn(pname = "NDBM_File",9)); |
dc437b57 | 831 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 832 | av_push(av, newSVpvn(pname = "DB_File",7)); |
dc437b57 | 833 | gv_stashpvn(pname, 7, TRUE); |
79cb57f6 | 834 | av_push(av, newSVpvn(pname = "GDBM_File",9)); |
dc437b57 | 835 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 836 | av_push(av, newSVpvn(pname = "SDBM_File",9)); |
dc437b57 | 837 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 838 | av_push(av, newSVpvn(pname = "ODBM_File",9)); |
dc437b57 | 839 | gv_stashpvn(pname, 9, TRUE); |
85e6fe83 | 840 | } |
463ee0b2 LW |
841 | } |
842 | break; | |
a0d0e21e LW |
843 | case 'O': |
844 | if (strEQ(name, "OVERLOAD")) { | |
845 | HV* hv = GvHVn(gv); | |
a5f75d66 | 846 | GvMULTI_on(gv); |
14befaf4 | 847 | hv_magic(hv, Nullgv, PERL_MAGIC_overload); |
a0d0e21e LW |
848 | } |
849 | break; | |
93a17b20 LW |
850 | case 'S': |
851 | if (strEQ(name, "SIG")) { | |
852 | HV *hv; | |
dc437b57 | 853 | I32 i; |
1d7c1841 | 854 | if (!PL_psig_ptr) { |
0a8e0eff NIS |
855 | Newz(73, PL_psig_ptr, SIG_SIZE, SV*); |
856 | Newz(73, PL_psig_name, SIG_SIZE, SV*); | |
857 | Newz(73, PL_psig_pend, SIG_SIZE, int); | |
1d7c1841 GS |
858 | } |
859 | GvMULTI_on(gv); | |
860 | hv = GvHVn(gv); | |
14befaf4 | 861 | hv_magic(hv, Nullgv, PERL_MAGIC_sig); |
76d3c696 | 862 | for (i = 1; i < SIG_SIZE; i++) { |
dc437b57 | 863 | SV ** init; |
1d7c1841 GS |
864 | init = hv_fetch(hv, PL_sig_name[i], strlen(PL_sig_name[i]), 1); |
865 | if (init) | |
866 | sv_setsv(*init, &PL_sv_undef); | |
22c35a8c GS |
867 | PL_psig_ptr[i] = 0; |
868 | PL_psig_name[i] = 0; | |
0a8e0eff | 869 | PL_psig_pend[i] = 0; |
dc437b57 | 870 | } |
93a17b20 LW |
871 | } |
872 | break; | |
09bef843 SB |
873 | case 'V': |
874 | if (strEQ(name, "VERSION")) | |
875 | GvMULTI_on(gv); | |
876 | break; | |
93a17b20 LW |
877 | |
878 | case '&': | |
93a17b20 | 879 | case '`': |
93a17b20 | 880 | case '\'': |
b4a9608f JP |
881 | if ( |
882 | len > 1 || | |
883 | sv_type == SVt_PVAV || | |
884 | sv_type == SVt_PVHV || | |
885 | sv_type == SVt_PVCV || | |
b4a9608f JP |
886 | sv_type == SVt_PVFM || |
887 | sv_type == SVt_PVIO | |
888 | ) { break; } | |
3280af22 | 889 | PL_sawampersand = TRUE; |
a0d0e21e | 890 | goto ro_magicalize; |
93a17b20 LW |
891 | |
892 | case ':': | |
463ee0b2 LW |
893 | if (len > 1) |
894 | break; | |
3280af22 | 895 | sv_setpv(GvSV(gv),PL_chopset); |
93a17b20 LW |
896 | goto magicalize; |
897 | ||
ff0cee69 | 898 | case '?': |
899 | if (len > 1) | |
900 | break; | |
901 | #ifdef COMPLEX_STATUS | |
07f14f54 | 902 | (void)SvUPGRADE(GvSV(gv), SVt_PVLV); |
ff0cee69 | 903 | #endif |
904 | goto magicalize; | |
905 | ||
067391ea | 906 | case '!': |
4318d5a0 | 907 | if (len > 1) |
067391ea | 908 | break; |
d2c93421 RH |
909 | |
910 | /* If %! has been used, automatically load Errno.pm. | |
911 | The require will itself set errno, so in order to | |
912 | preserve its value we have to set up the magic | |
913 | now (rather than going to magicalize) | |
914 | */ | |
915 | ||
14befaf4 | 916 | sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, len); |
d2c93421 RH |
917 | |
918 | if (sv_type == SVt_PVHV) | |
919 | require_errno(gv); | |
920 | ||
921 | break; | |
6cef1e77 IZ |
922 | case '-': |
923 | if (len > 1) | |
924 | break; | |
925 | else { | |
926 | AV* av = GvAVn(gv); | |
14befaf4 | 927 | sv_magic((SV*)av, Nullsv, PERL_MAGIC_regdata, Nullch, 0); |
03a27ae7 | 928 | SvREADONLY_on(av); |
6cef1e77 IZ |
929 | } |
930 | goto magicalize; | |
a0d0e21e | 931 | case '*': |
f02c194e RGS |
932 | if (len == 1 && sv_type == SVt_PV && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
933 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
9b332a20 | 934 | "$* is no longer supported"); |
f02c194e RGS |
935 | break; |
936 | case '#': | |
937 | if (len == 1 && sv_type == SVt_PV && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) | |
938 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
939 | "Use of $# is deprecated"); | |
a0d0e21e LW |
940 | /* FALL THROUGH */ |
941 | case '[': | |
93a17b20 LW |
942 | case '^': |
943 | case '~': | |
944 | case '=': | |
93a17b20 LW |
945 | case '%': |
946 | case '.': | |
93a17b20 LW |
947 | case '(': |
948 | case ')': | |
949 | case '<': | |
950 | case '>': | |
951 | case ',': | |
952 | case '\\': | |
953 | case '/': | |
16070b82 GS |
954 | case '\001': /* $^A */ |
955 | case '\003': /* $^C */ | |
956 | case '\004': /* $^D */ | |
16070b82 GS |
957 | case '\006': /* $^F */ |
958 | case '\010': /* $^H */ | |
959 | case '\011': /* $^I, NOT \t in EBCDIC */ | |
a01268b5 | 960 | case '\016': /* $^N */ |
16070b82 | 961 | case '\020': /* $^P */ |
463ee0b2 LW |
962 | if (len > 1) |
963 | break; | |
964 | goto magicalize; | |
d8ce0c9a BH |
965 | case '|': |
966 | if (len > 1) | |
967 | break; | |
968 | sv_setiv(GvSV(gv), (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0); | |
969 | goto magicalize; | |
0a378802 JH |
970 | case '\005': /* $^E && $^ENCODING */ |
971 | if (len > 1 && strNE(name, "\005NCODING")) | |
972 | break; | |
973 | goto magicalize; | |
974 | ||
ac27b0f5 NIS |
975 | case '\017': /* $^O & $^OPEN */ |
976 | if (len > 1 && strNE(name, "\017PEN")) | |
977 | break; | |
978 | goto magicalize; | |
16070b82 | 979 | case '\023': /* $^S */ |
6cef1e77 IZ |
980 | if (len > 1) |
981 | break; | |
982 | goto ro_magicalize; | |
eb27b65e | 983 | case '\024': /* $^T, ${^TAINT} */ |
7c36658b MS |
984 | if (len == 1) |
985 | goto magicalize; | |
986 | else if (strEQ(name, "\024AINT")) | |
987 | goto ro_magicalize; | |
988 | else | |
989 | break; | |
fde18df1 | 990 | case '\025': |
a05d7ebb | 991 | if (len > 1 && strNE(name, "\025NICODE")) |
fde18df1 JH |
992 | break; |
993 | goto ro_magicalize; | |
994 | ||
6a818117 | 995 | case '\027': /* $^W & $^WARNING_BITS */ |
fde18df1 JH |
996 | if (len > 1 |
997 | && strNE(name, "\027ARNING_BITS") | |
998 | ) | |
4438c4b7 JH |
999 | break; |
1000 | goto magicalize; | |
463ee0b2 | 1001 | |
a0d0e21e | 1002 | case '+': |
6cef1e77 IZ |
1003 | if (len > 1) |
1004 | break; | |
1005 | else { | |
1006 | AV* av = GvAVn(gv); | |
14befaf4 | 1007 | sv_magic((SV*)av, (SV*)av, PERL_MAGIC_regdata, Nullch, 0); |
03a27ae7 | 1008 | SvREADONLY_on(av); |
6cef1e77 IZ |
1009 | } |
1010 | /* FALL THROUGH */ | |
463ee0b2 LW |
1011 | case '1': |
1012 | case '2': | |
1013 | case '3': | |
1014 | case '4': | |
1015 | case '5': | |
1016 | case '6': | |
1017 | case '7': | |
1018 | case '8': | |
1019 | case '9': | |
e521374c JP |
1020 | /* ensures variable is only digits */ |
1021 | /* ${"1foo"} fails this test (and is thus writeable) */ | |
1022 | /* added by japhy, but borrowed from is_gv_magical */ | |
1023 | ||
1024 | if (len > 1) { | |
1025 | const char *end = name + len; | |
1026 | while (--end > name) { | |
1027 | if (!isDIGIT(*end)) return gv; | |
1028 | } | |
1029 | } | |
1030 | ||
a0d0e21e LW |
1031 | ro_magicalize: |
1032 | SvREADONLY_on(GvSV(gv)); | |
93a17b20 | 1033 | magicalize: |
14befaf4 | 1034 | sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, len); |
93a17b20 LW |
1035 | break; |
1036 | ||
16070b82 | 1037 | case '\014': /* $^L */ |
463ee0b2 LW |
1038 | if (len > 1) |
1039 | break; | |
93a17b20 | 1040 | sv_setpv(GvSV(gv),"\f"); |
3280af22 | 1041 | PL_formfeed = GvSV(gv); |
93a17b20 LW |
1042 | break; |
1043 | case ';': | |
463ee0b2 LW |
1044 | if (len > 1) |
1045 | break; | |
93a17b20 LW |
1046 | sv_setpv(GvSV(gv),"\034"); |
1047 | break; | |
463ee0b2 LW |
1048 | case ']': |
1049 | if (len == 1) { | |
f86702cc | 1050 | SV *sv = GvSV(gv); |
5089c844 | 1051 | (void)SvUPGRADE(sv, SVt_PVNV); |
6a6ba966 SB |
1052 | Perl_sv_setpvf(aTHX_ sv, |
1053 | #if defined(PERL_SUBVERSION) && (PERL_SUBVERSION > 0) | |
1054 | "%8.6" | |
1055 | #else | |
1056 | "%5.3" | |
1057 | #endif | |
1058 | NVff, | |
1059 | SvNVX(PL_patchlevel)); | |
5089c844 GS |
1060 | SvNVX(sv) = SvNVX(PL_patchlevel); |
1061 | SvNOK_on(sv); | |
5089c844 | 1062 | SvREADONLY_on(sv); |
93a17b20 LW |
1063 | } |
1064 | break; | |
16070b82 GS |
1065 | case '\026': /* $^V */ |
1066 | if (len == 1) { | |
1067 | SV *sv = GvSV(gv); | |
1068 | GvSV(gv) = SvREFCNT_inc(PL_patchlevel); | |
1069 | SvREFCNT_dec(sv); | |
1070 | } | |
1071 | break; | |
79072805 | 1072 | } |
93a17b20 | 1073 | return gv; |
79072805 LW |
1074 | } |
1075 | ||
1076 | void | |
43693395 GS |
1077 | Perl_gv_fullname4(pTHX_ SV *sv, GV *gv, const char *prefix, bool keepmain) |
1078 | { | |
e27ad1f2 | 1079 | char *name; |
43693395 GS |
1080 | HV *hv = GvSTASH(gv); |
1081 | if (!hv) { | |
1082 | (void)SvOK_off(sv); | |
1083 | return; | |
1084 | } | |
1085 | sv_setpv(sv, prefix ? prefix : ""); | |
e27ad1f2 AV |
1086 | |
1087 | if (!HvNAME(hv)) | |
1088 | name = "__ANON__"; | |
1089 | else | |
1090 | name = HvNAME(hv); | |
1091 | if (keepmain || strNE(name, "main")) { | |
1092 | sv_catpv(sv,name); | |
43693395 GS |
1093 | sv_catpvn(sv,"::", 2); |
1094 | } | |
1095 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); | |
1096 | } | |
1097 | ||
1098 | void | |
864dbfa3 | 1099 | Perl_gv_fullname3(pTHX_ SV *sv, GV *gv, const char *prefix) |
79072805 | 1100 | { |
84e79d79 | 1101 | gv_fullname4(sv, gv, prefix, TRUE); |
79072805 LW |
1102 | } |
1103 | ||
1104 | void | |
43693395 GS |
1105 | Perl_gv_efullname4(pTHX_ SV *sv, GV *gv, const char *prefix, bool keepmain) |
1106 | { | |
1107 | GV *egv = GvEGV(gv); | |
1108 | if (!egv) | |
1109 | egv = gv; | |
1110 | gv_fullname4(sv, egv, prefix, keepmain); | |
1111 | } | |
1112 | ||
1113 | void | |
864dbfa3 | 1114 | Perl_gv_efullname3(pTHX_ SV *sv, GV *gv, const char *prefix) |
79072805 | 1115 | { |
84e79d79 | 1116 | gv_efullname4(sv, gv, prefix, TRUE); |
f6aff53a | 1117 | } |
1118 | ||
1119 | /* XXX compatibility with versions <= 5.003. */ | |
1120 | void | |
864dbfa3 | 1121 | Perl_gv_fullname(pTHX_ SV *sv, GV *gv) |
f6aff53a | 1122 | { |
1123 | gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
1124 | } | |
1125 | ||
1126 | /* XXX compatibility with versions <= 5.003. */ | |
1127 | void | |
864dbfa3 | 1128 | Perl_gv_efullname(pTHX_ SV *sv, GV *gv) |
f6aff53a | 1129 | { |
1130 | gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
79072805 LW |
1131 | } |
1132 | ||
1133 | IO * | |
864dbfa3 | 1134 | Perl_newIO(pTHX) |
79072805 LW |
1135 | { |
1136 | IO *io; | |
8990e307 LW |
1137 | GV *iogv; |
1138 | ||
1139 | io = (IO*)NEWSV(0,0); | |
a0d0e21e | 1140 | sv_upgrade((SV *)io,SVt_PVIO); |
8990e307 LW |
1141 | SvREFCNT(io) = 1; |
1142 | SvOBJECT_on(io); | |
081fc587 AB |
1143 | /* Clear the stashcache because a new IO could overrule a |
1144 | package name */ | |
1145 | hv_clear(PL_stashcache); | |
c9de509e | 1146 | iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV); |
5f2d631d GS |
1147 | /* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */ |
1148 | if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv)))) | |
c9de509e | 1149 | iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV); |
8990e307 | 1150 | SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv)); |
79072805 LW |
1151 | return io; |
1152 | } | |
1153 | ||
1154 | void | |
864dbfa3 | 1155 | Perl_gv_check(pTHX_ HV *stash) |
79072805 LW |
1156 | { |
1157 | register HE *entry; | |
1158 | register I32 i; | |
1159 | register GV *gv; | |
463ee0b2 LW |
1160 | HV *hv; |
1161 | ||
8990e307 LW |
1162 | if (!HvARRAY(stash)) |
1163 | return; | |
a0d0e21e | 1164 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
dc437b57 | 1165 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
1166 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && | |
b862623f | 1167 | (gv = (GV*)HeVAL(entry)) && isGV(gv) && (hv = GvHV(gv))) |
a0d0e21e | 1168 | { |
19b6c847 | 1169 | if (hv != PL_defstash && hv != stash) |
a0d0e21e LW |
1170 | gv_check(hv); /* nested package */ |
1171 | } | |
dc437b57 | 1172 | else if (isALPHA(*HeKEY(entry))) { |
1d7c1841 | 1173 | char *file; |
dc437b57 | 1174 | gv = (GV*)HeVAL(entry); |
55d729e4 | 1175 | if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv)) |
463ee0b2 | 1176 | continue; |
1d7c1841 GS |
1177 | file = GvFILE(gv); |
1178 | /* performance hack: if filename is absolute and it's a standard | |
1179 | * module, don't bother warning */ | |
1180 | if (file | |
1181 | && PERL_FILE_IS_ABSOLUTE(file) | |
6eb630b7 CN |
1182 | #ifdef MACOS_TRADITIONAL |
1183 | && (instr(file, ":lib:") | |
1184 | #else | |
1185 | && (instr(file, "/lib/") | |
1186 | #endif | |
1187 | || instr(file, ".pm"))) | |
1d7c1841 | 1188 | { |
8990e307 | 1189 | continue; |
1d7c1841 GS |
1190 | } |
1191 | CopLINE_set(PL_curcop, GvLINE(gv)); | |
1192 | #ifdef USE_ITHREADS | |
1193 | CopFILE(PL_curcop) = file; /* set for warning */ | |
1194 | #else | |
1195 | CopFILEGV(PL_curcop) = gv_fetchfile(file); | |
1196 | #endif | |
9014280d | 1197 | Perl_warner(aTHX_ packWARN(WARN_ONCE), |
599cee73 | 1198 | "Name \"%s::%s\" used only once: possible typo", |
a0d0e21e | 1199 | HvNAME(stash), GvNAME(gv)); |
463ee0b2 | 1200 | } |
79072805 LW |
1201 | } |
1202 | } | |
1203 | } | |
1204 | ||
1205 | GV * | |
864dbfa3 | 1206 | Perl_newGVgen(pTHX_ char *pack) |
79072805 | 1207 | { |
cea2e8a9 | 1208 | return gv_fetchpv(Perl_form(aTHX_ "%s::_GEN_%ld", pack, (long)PL_gensym++), |
46fc3d4c | 1209 | TRUE, SVt_PVGV); |
79072805 LW |
1210 | } |
1211 | ||
1212 | /* hopefully this is only called on local symbol table entries */ | |
1213 | ||
1214 | GP* | |
864dbfa3 | 1215 | Perl_gp_ref(pTHX_ GP *gp) |
79072805 | 1216 | { |
1d7c1841 GS |
1217 | if (!gp) |
1218 | return (GP*)NULL; | |
79072805 | 1219 | gp->gp_refcnt++; |
44a8e56a | 1220 | if (gp->gp_cv) { |
1221 | if (gp->gp_cvgen) { | |
1222 | /* multi-named GPs cannot be used for method cache */ | |
1223 | SvREFCNT_dec(gp->gp_cv); | |
1224 | gp->gp_cv = Nullcv; | |
1225 | gp->gp_cvgen = 0; | |
1226 | } | |
1227 | else { | |
1228 | /* Adding a new name to a subroutine invalidates method cache */ | |
3280af22 | 1229 | PL_sub_generation++; |
44a8e56a | 1230 | } |
1231 | } | |
79072805 | 1232 | return gp; |
79072805 LW |
1233 | } |
1234 | ||
1235 | void | |
864dbfa3 | 1236 | Perl_gp_free(pTHX_ GV *gv) |
79072805 | 1237 | { |
79072805 LW |
1238 | GP* gp; |
1239 | ||
1240 | if (!gv || !(gp = GvGP(gv))) | |
1241 | return; | |
f248d071 GS |
1242 | if (gp->gp_refcnt == 0) { |
1243 | if (ckWARN_d(WARN_INTERNAL)) | |
9014280d | 1244 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
f248d071 | 1245 | "Attempt to free unreferenced glob pointers"); |
79072805 LW |
1246 | return; |
1247 | } | |
44a8e56a | 1248 | if (gp->gp_cv) { |
1249 | /* Deleting the name of a subroutine invalidates method cache */ | |
3280af22 | 1250 | PL_sub_generation++; |
44a8e56a | 1251 | } |
748a9306 LW |
1252 | if (--gp->gp_refcnt > 0) { |
1253 | if (gp->gp_egv == gv) | |
1254 | gp->gp_egv = 0; | |
79072805 | 1255 | return; |
748a9306 | 1256 | } |
79072805 | 1257 | |
13207a71 JH |
1258 | if (gp->gp_sv) SvREFCNT_dec(gp->gp_sv); |
1259 | if (gp->gp_sv) SvREFCNT_dec(gp->gp_av); | |
1260 | if (gp->gp_hv) { | |
1261 | if (PL_stashcache && HvNAME(gp->gp_hv)) | |
1262 | hv_delete(PL_stashcache, | |
1263 | HvNAME(gp->gp_hv), strlen(HvNAME(gp->gp_hv)), | |
1264 | G_DISCARD); | |
1265 | SvREFCNT_dec(gp->gp_hv); | |
1266 | } | |
1267 | if (gp->gp_io) SvREFCNT_dec(gp->gp_io); | |
1268 | if (gp->gp_cv) SvREFCNT_dec(gp->gp_cv); | |
1269 | if (gp->gp_form) SvREFCNT_dec(gp->gp_form); | |
748a9306 | 1270 | |
79072805 LW |
1271 | Safefree(gp); |
1272 | GvGP(gv) = 0; | |
1273 | } | |
1274 | ||
d460ef45 NIS |
1275 | int |
1276 | Perl_magic_freeovrld(pTHX_ SV *sv, MAGIC *mg) | |
1277 | { | |
1278 | AMT *amtp = (AMT*)mg->mg_ptr; | |
1279 | if (amtp && AMT_AMAGIC(amtp)) { | |
1280 | int i; | |
1281 | for (i = 1; i < NofAMmeth; i++) { | |
1282 | CV *cv = amtp->table[i]; | |
1283 | if (cv != Nullcv) { | |
1284 | SvREFCNT_dec((SV *) cv); | |
1285 | amtp->table[i] = Nullcv; | |
1286 | } | |
1287 | } | |
1288 | } | |
1289 | return 0; | |
1290 | } | |
1291 | ||
a0d0e21e LW |
1292 | /* Updates and caches the CV's */ |
1293 | ||
1294 | bool | |
864dbfa3 | 1295 | Perl_Gv_AMupdate(pTHX_ HV *stash) |
a0d0e21e | 1296 | { |
a0d0e21e LW |
1297 | GV* gv; |
1298 | CV* cv; | |
14befaf4 | 1299 | MAGIC* mg=mg_find((SV*)stash, PERL_MAGIC_overload_table); |
8ac85365 | 1300 | AMT *amtp = (mg) ? (AMT*)mg->mg_ptr: (AMT *) NULL; |
a6006777 | 1301 | AMT amt; |
a0d0e21e | 1302 | |
3280af22 NIS |
1303 | if (mg && amtp->was_ok_am == PL_amagic_generation |
1304 | && amtp->was_ok_sub == PL_sub_generation) | |
eb160463 | 1305 | return (bool)AMT_OVERLOADED(amtp); |
14befaf4 | 1306 | sv_unmagic((SV*)stash, PERL_MAGIC_overload_table); |
a0d0e21e | 1307 | |
cea2e8a9 | 1308 | DEBUG_o( Perl_deb(aTHX_ "Recalcing overload magic in package %s\n",HvNAME(stash)) ); |
a0d0e21e | 1309 | |
d460ef45 | 1310 | Zero(&amt,1,AMT); |
3280af22 NIS |
1311 | amt.was_ok_am = PL_amagic_generation; |
1312 | amt.was_ok_sub = PL_sub_generation; | |
a6006777 | 1313 | amt.fallback = AMGfallNO; |
1314 | amt.flags = 0; | |
1315 | ||
a6006777 | 1316 | { |
32251b26 IZ |
1317 | int filled = 0, have_ovl = 0; |
1318 | int i, lim = 1; | |
a6006777 | 1319 | SV* sv = NULL; |
a6006777 | 1320 | |
22c35a8c | 1321 | /* Work with "fallback" key, which we assume to be first in PL_AMG_names */ |
a6006777 | 1322 | |
89ffc314 IZ |
1323 | /* Try to find via inheritance. */ |
1324 | gv = gv_fetchmeth(stash, PL_AMG_names[0], 2, -1); | |
1325 | if (gv) | |
1326 | sv = GvSV(gv); | |
1327 | ||
1328 | if (!gv) | |
32251b26 | 1329 | lim = DESTROY_amg; /* Skip overloading entries. */ |
89ffc314 IZ |
1330 | else if (SvTRUE(sv)) |
1331 | amt.fallback=AMGfallYES; | |
1332 | else if (SvOK(sv)) | |
1333 | amt.fallback=AMGfallNEVER; | |
a6006777 | 1334 | |
32251b26 IZ |
1335 | for (i = 1; i < lim; i++) |
1336 | amt.table[i] = Nullcv; | |
1337 | for (; i < NofAMmeth; i++) { | |
c8ce92fc | 1338 | char *cooky = (char*)PL_AMG_names[i]; |
32251b26 IZ |
1339 | /* Human-readable form, for debugging: */ |
1340 | char *cp = (i >= DESTROY_amg ? cooky : AMG_id2name(i)); | |
89ffc314 IZ |
1341 | STRLEN l = strlen(cooky); |
1342 | ||
cea2e8a9 | 1343 | DEBUG_o( Perl_deb(aTHX_ "Checking overloading of `%s' in package `%.256s'\n", |
44a8e56a | 1344 | cp, HvNAME(stash)) ); |
611c1e95 IZ |
1345 | /* don't fill the cache while looking up! |
1346 | Creation of inheritance stubs in intermediate packages may | |
1347 | conflict with the logic of runtime method substitution. | |
1348 | Indeed, for inheritance A -> B -> C, if C overloads "+0", | |
1349 | then we could have created stubs for "(+0" in A and C too. | |
1350 | But if B overloads "bool", we may want to use it for | |
1351 | numifying instead of C's "+0". */ | |
1352 | if (i >= DESTROY_amg) | |
1353 | gv = Perl_gv_fetchmeth_autoload(aTHX_ stash, cooky, l, 0); | |
1354 | else /* Autoload taken care of below */ | |
1355 | gv = Perl_gv_fetchmeth(aTHX_ stash, cooky, l, -1); | |
46fc3d4c | 1356 | cv = 0; |
89ffc314 | 1357 | if (gv && (cv = GvCV(gv))) { |
44a8e56a | 1358 | if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil") |
1359 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) { | |
611c1e95 IZ |
1360 | /* This is a hack to support autoloading..., while |
1361 | knowing *which* methods were declared as overloaded. */ | |
44a8e56a | 1362 | /* GvSV contains the name of the method. */ |
4ea42e7f | 1363 | GV *ngv = Nullgv; |
44a8e56a | 1364 | |
84c133a0 RB |
1365 | DEBUG_o( Perl_deb(aTHX_ "Resolving method `%"SVf256\ |
1366 | "' for overloaded `%s' in package `%.256s'\n", | |
35c1215d | 1367 | GvSV(gv), cp, HvNAME(stash)) ); |
b267980d | 1368 | if (!SvPOK(GvSV(gv)) |
dc848c6f | 1369 | || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)), |
1370 | FALSE))) | |
1371 | { | |
44a8e56a | 1372 | /* Can be an import stub (created by `can'). */ |
35c1215d NC |
1373 | SV *gvsv = GvSV(gv); |
1374 | const char *name = SvPOK(gvsv) ? SvPVX(gvsv) : "???"; | |
84c133a0 RB |
1375 | Perl_croak(aTHX_ "%s method `%.256s' overloading `%s' "\ |
1376 | "in package `%.256s'", | |
35c1215d NC |
1377 | (GvCVGEN(gv) ? "Stub found while resolving" |
1378 | : "Can't resolve"), | |
1379 | name, cp, HvNAME(stash)); | |
44a8e56a | 1380 | } |
dc848c6f | 1381 | cv = GvCV(gv = ngv); |
44a8e56a | 1382 | } |
cea2e8a9 | 1383 | DEBUG_o( Perl_deb(aTHX_ "Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n", |
44a8e56a | 1384 | cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))), |
1385 | GvNAME(CvGV(cv))) ); | |
1386 | filled = 1; | |
32251b26 IZ |
1387 | if (i < DESTROY_amg) |
1388 | have_ovl = 1; | |
611c1e95 IZ |
1389 | } else if (gv) { /* Autoloaded... */ |
1390 | cv = (CV*)gv; | |
1391 | filled = 1; | |
44a8e56a | 1392 | } |
a6006777 | 1393 | amt.table[i]=(CV*)SvREFCNT_inc(cv); |
a0d0e21e | 1394 | } |
a0d0e21e | 1395 | if (filled) { |
a6006777 | 1396 | AMT_AMAGIC_on(&amt); |
32251b26 IZ |
1397 | if (have_ovl) |
1398 | AMT_OVERLOADED_on(&amt); | |
14befaf4 DM |
1399 | sv_magic((SV*)stash, 0, PERL_MAGIC_overload_table, |
1400 | (char*)&amt, sizeof(AMT)); | |
32251b26 | 1401 | return have_ovl; |
a0d0e21e LW |
1402 | } |
1403 | } | |
a6006777 | 1404 | /* Here we have no table: */ |
9cbac4c7 | 1405 | /* no_table: */ |
a6006777 | 1406 | AMT_AMAGIC_off(&amt); |
14befaf4 DM |
1407 | sv_magic((SV*)stash, 0, PERL_MAGIC_overload_table, |
1408 | (char*)&amt, sizeof(AMTS)); | |
a0d0e21e LW |
1409 | return FALSE; |
1410 | } | |
1411 | ||
32251b26 IZ |
1412 | |
1413 | CV* | |
1414 | Perl_gv_handler(pTHX_ HV *stash, I32 id) | |
1415 | { | |
3f8f4626 | 1416 | MAGIC *mg; |
32251b26 | 1417 | AMT *amtp; |
3ad83ce7 | 1418 | CV *ret; |
32251b26 | 1419 | |
e27ad1f2 | 1420 | if (!stash || !HvNAME(stash)) |
3f8f4626 | 1421 | return Nullcv; |
14befaf4 | 1422 | mg = mg_find((SV*)stash, PERL_MAGIC_overload_table); |
32251b26 IZ |
1423 | if (!mg) { |
1424 | do_update: | |
1425 | Gv_AMupdate(stash); | |
14befaf4 | 1426 | mg = mg_find((SV*)stash, PERL_MAGIC_overload_table); |
32251b26 IZ |
1427 | } |
1428 | amtp = (AMT*)mg->mg_ptr; | |
1429 | if ( amtp->was_ok_am != PL_amagic_generation | |
1430 | || amtp->was_ok_sub != PL_sub_generation ) | |
1431 | goto do_update; | |
3ad83ce7 AMS |
1432 | if (AMT_AMAGIC(amtp)) { |
1433 | ret = amtp->table[id]; | |
1434 | if (ret && isGV(ret)) { /* Autoloading stab */ | |
1435 | /* Passing it through may have resulted in a warning | |
1436 | "Inherited AUTOLOAD for a non-method deprecated", since | |
1437 | our caller is going through a function call, not a method call. | |
1438 | So return the CV for AUTOLOAD, setting $AUTOLOAD. */ | |
1439 | GV *gv = gv_fetchmethod(stash, (char*)PL_AMG_names[id]); | |
1440 | ||
1441 | if (gv && GvCV(gv)) | |
1442 | return GvCV(gv); | |
1443 | } | |
1444 | return ret; | |
1445 | } | |
1446 | ||
32251b26 IZ |
1447 | return Nullcv; |
1448 | } | |
1449 | ||
1450 | ||
a0d0e21e | 1451 | SV* |
864dbfa3 | 1452 | Perl_amagic_call(pTHX_ SV *left, SV *right, int method, int flags) |
a0d0e21e | 1453 | { |
b267980d | 1454 | MAGIC *mg; |
9c5ffd7c | 1455 | CV *cv=NULL; |
a0d0e21e | 1456 | CV **cvp=NULL, **ocvp=NULL; |
9c5ffd7c | 1457 | AMT *amtp=NULL, *oamtp=NULL; |
497b47a8 | 1458 | int off=0, off1, lr=0, assign=AMGf_assign & flags, notfound=0; |
ee239bfe | 1459 | int postpr = 0, force_cpy = 0, assignshift = assign ? 1 : 0; |
497b47a8 JH |
1460 | #ifdef DEBUGGING |
1461 | int fl=0; | |
497b47a8 | 1462 | #endif |
25716404 | 1463 | HV* stash=NULL; |
a0d0e21e | 1464 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) |
25716404 GS |
1465 | && (stash = SvSTASH(SvRV(left))) |
1466 | && (mg = mg_find((SV*)stash, PERL_MAGIC_overload_table)) | |
b267980d | 1467 | && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
a6006777 | 1468 | ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table |
8ac85365 | 1469 | : (CV **) NULL)) |
b267980d | 1470 | && ((cv = cvp[off=method+assignshift]) |
748a9306 LW |
1471 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to |
1472 | * usual method */ | |
497b47a8 JH |
1473 | ( |
1474 | #ifdef DEBUGGING | |
1475 | fl = 1, | |
1476 | #endif | |
1477 | cv = cvp[off=method])))) { | |
a0d0e21e LW |
1478 | lr = -1; /* Call method for left argument */ |
1479 | } else { | |
1480 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { | |
1481 | int logic; | |
1482 | ||
1483 | /* look for substituted methods */ | |
ee239bfe | 1484 | /* In all the covered cases we should be called with assign==0. */ |
a0d0e21e LW |
1485 | switch (method) { |
1486 | case inc_amg: | |
ee239bfe IZ |
1487 | force_cpy = 1; |
1488 | if ((cv = cvp[off=add_ass_amg]) | |
1489 | || ((cv = cvp[off = add_amg]) && (force_cpy = 0, postpr = 1))) { | |
3280af22 | 1490 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1491 | } |
1492 | break; | |
1493 | case dec_amg: | |
ee239bfe IZ |
1494 | force_cpy = 1; |
1495 | if ((cv = cvp[off = subtr_ass_amg]) | |
1496 | || ((cv = cvp[off = subtr_amg]) && (force_cpy = 0, postpr=1))) { | |
3280af22 | 1497 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1498 | } |
1499 | break; | |
1500 | case bool__amg: | |
1501 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); | |
1502 | break; | |
1503 | case numer_amg: | |
1504 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); | |
1505 | break; | |
1506 | case string_amg: | |
1507 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); | |
1508 | break; | |
dc437b57 | 1509 | case not_amg: |
b267980d | 1510 | (void)((cv = cvp[off=bool__amg]) |
dc437b57 | 1511 | || (cv = cvp[off=numer_amg]) |
1512 | || (cv = cvp[off=string_amg])); | |
1513 | postpr = 1; | |
1514 | break; | |
748a9306 LW |
1515 | case copy_amg: |
1516 | { | |
76e3520e GS |
1517 | /* |
1518 | * SV* ref causes confusion with the interpreter variable of | |
1519 | * the same name | |
1520 | */ | |
1521 | SV* tmpRef=SvRV(left); | |
1522 | if (!SvROK(tmpRef) && SvTYPE(tmpRef) <= SVt_PVMG) { | |
fc36a67e | 1523 | /* |
1524 | * Just to be extra cautious. Maybe in some | |
1525 | * additional cases sv_setsv is safe, too. | |
1526 | */ | |
76e3520e | 1527 | SV* newref = newSVsv(tmpRef); |
748a9306 | 1528 | SvOBJECT_on(newref); |
76e3520e | 1529 | SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(tmpRef)); |
748a9306 LW |
1530 | return newref; |
1531 | } | |
1532 | } | |
1533 | break; | |
a0d0e21e | 1534 | case abs_amg: |
b267980d | 1535 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e | 1536 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
748a9306 | 1537 | SV* nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e | 1538 | if (off1==lt_amg) { |
748a9306 | 1539 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1540 | lt_amg,AMGf_noright); |
1541 | logic = SvTRUE(lessp); | |
1542 | } else { | |
748a9306 | 1543 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1544 | ncmp_amg,AMGf_noright); |
1545 | logic = (SvNV(lessp) < 0); | |
1546 | } | |
1547 | if (logic) { | |
1548 | if (off==subtr_amg) { | |
1549 | right = left; | |
748a9306 | 1550 | left = nullsv; |
a0d0e21e LW |
1551 | lr = 1; |
1552 | } | |
1553 | } else { | |
1554 | return left; | |
1555 | } | |
1556 | } | |
1557 | break; | |
1558 | case neg_amg: | |
155aba94 | 1559 | if ((cv = cvp[off=subtr_amg])) { |
a0d0e21e LW |
1560 | right = left; |
1561 | left = sv_2mortal(newSViv(0)); | |
1562 | lr = 1; | |
1563 | } | |
1564 | break; | |
f216259d | 1565 | case int_amg: |
f5284f61 | 1566 | case iter_amg: /* XXXX Eventually should do to_gv. */ |
b267980d NIS |
1567 | /* FAIL safe */ |
1568 | return NULL; /* Delegate operation to standard mechanisms. */ | |
1569 | break; | |
f5284f61 IZ |
1570 | case to_sv_amg: |
1571 | case to_av_amg: | |
1572 | case to_hv_amg: | |
1573 | case to_gv_amg: | |
1574 | case to_cv_amg: | |
1575 | /* FAIL safe */ | |
b267980d | 1576 | return left; /* Delegate operation to standard mechanisms. */ |
f5284f61 | 1577 | break; |
a0d0e21e LW |
1578 | default: |
1579 | goto not_found; | |
1580 | } | |
1581 | if (!cv) goto not_found; | |
1582 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) | |
25716404 GS |
1583 | && (stash = SvSTASH(SvRV(right))) |
1584 | && (mg = mg_find((SV*)stash, PERL_MAGIC_overload_table)) | |
b267980d | 1585 | && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
a6006777 | 1586 | ? (amtp = (AMT*)mg->mg_ptr)->table |
8ac85365 | 1587 | : (CV **) NULL)) |
a0d0e21e LW |
1588 | && (cv = cvp[off=method])) { /* Method for right |
1589 | * argument found */ | |
1590 | lr=1; | |
b267980d NIS |
1591 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
1592 | && (cvp=ocvp) && (lr = -1)) | |
a0d0e21e LW |
1593 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
1594 | && !(flags & AMGf_unary)) { | |
1595 | /* We look for substitution for | |
1596 | * comparison operations and | |
fc36a67e | 1597 | * concatenation */ |
a0d0e21e LW |
1598 | if (method==concat_amg || method==concat_ass_amg |
1599 | || method==repeat_amg || method==repeat_ass_amg) { | |
1600 | return NULL; /* Delegate operation to string conversion */ | |
1601 | } | |
1602 | off = -1; | |
1603 | switch (method) { | |
1604 | case lt_amg: | |
1605 | case le_amg: | |
1606 | case gt_amg: | |
1607 | case ge_amg: | |
1608 | case eq_amg: | |
1609 | case ne_amg: | |
1610 | postpr = 1; off=ncmp_amg; break; | |
1611 | case slt_amg: | |
1612 | case sle_amg: | |
1613 | case sgt_amg: | |
1614 | case sge_amg: | |
1615 | case seq_amg: | |
1616 | case sne_amg: | |
1617 | postpr = 1; off=scmp_amg; break; | |
1618 | } | |
1619 | if (off != -1) cv = cvp[off]; | |
1620 | if (!cv) { | |
1621 | goto not_found; | |
1622 | } | |
1623 | } else { | |
a6006777 | 1624 | not_found: /* No method found, either report or croak */ |
b267980d NIS |
1625 | switch (method) { |
1626 | case to_sv_amg: | |
1627 | case to_av_amg: | |
1628 | case to_hv_amg: | |
1629 | case to_gv_amg: | |
1630 | case to_cv_amg: | |
1631 | /* FAIL safe */ | |
1632 | return left; /* Delegate operation to standard mechanisms. */ | |
1633 | break; | |
1634 | } | |
a0d0e21e LW |
1635 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
1636 | notfound = 1; lr = -1; | |
1637 | } else if (cvp && (cv=cvp[nomethod_amg])) { | |
1638 | notfound = 1; lr = 1; | |
1639 | } else { | |
46fc3d4c | 1640 | SV *msg; |
774d564b | 1641 | if (off==-1) off=method; |
b267980d | 1642 | msg = sv_2mortal(Perl_newSVpvf(aTHX_ |
46fc3d4c | 1643 | "Operation `%s': no method found,%sargument %s%s%s%s", |
89ffc314 | 1644 | AMG_id2name(method + assignshift), |
e7ea3e70 | 1645 | (flags & AMGf_unary ? " " : "\n\tleft "), |
b267980d | 1646 | SvAMAGIC(left)? |
a0d0e21e LW |
1647 | "in overloaded package ": |
1648 | "has no overloaded magic", | |
b267980d | 1649 | SvAMAGIC(left)? |
a0d0e21e LW |
1650 | HvNAME(SvSTASH(SvRV(left))): |
1651 | "", | |
b267980d | 1652 | SvAMAGIC(right)? |
e7ea3e70 | 1653 | ",\n\tright argument in overloaded package ": |
b267980d | 1654 | (flags & AMGf_unary |
e7ea3e70 IZ |
1655 | ? "" |
1656 | : ",\n\tright argument has no overloaded magic"), | |
b267980d | 1657 | SvAMAGIC(right)? |
a0d0e21e | 1658 | HvNAME(SvSTASH(SvRV(right))): |
46fc3d4c | 1659 | "")); |
a0d0e21e | 1660 | if (amtp && amtp->fallback >= AMGfallYES) { |
cea2e8a9 | 1661 | DEBUG_o( Perl_deb(aTHX_ "%s", SvPVX(msg)) ); |
a0d0e21e | 1662 | } else { |
894356b3 | 1663 | Perl_croak(aTHX_ "%"SVf, msg); |
a0d0e21e LW |
1664 | } |
1665 | return NULL; | |
1666 | } | |
ee239bfe | 1667 | force_cpy = force_cpy || assign; |
a0d0e21e LW |
1668 | } |
1669 | } | |
497b47a8 | 1670 | #ifdef DEBUGGING |
a0d0e21e | 1671 | if (!notfound) { |
497b47a8 JH |
1672 | DEBUG_o(Perl_deb(aTHX_ |
1673 | "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n", | |
1674 | AMG_id2name(off), | |
1675 | method+assignshift==off? "" : | |
1676 | " (initially `", | |
1677 | method+assignshift==off? "" : | |
1678 | AMG_id2name(method+assignshift), | |
1679 | method+assignshift==off? "" : "')", | |
1680 | flags & AMGf_unary? "" : | |
1681 | lr==1 ? " for right argument": " for left argument", | |
1682 | flags & AMGf_unary? " for argument" : "", | |
25716404 | 1683 | stash ? HvNAME(stash) : "null", |
497b47a8 | 1684 | fl? ",\n\tassignment variant used": "") ); |
ee239bfe | 1685 | } |
497b47a8 | 1686 | #endif |
748a9306 LW |
1687 | /* Since we use shallow copy during assignment, we need |
1688 | * to dublicate the contents, probably calling user-supplied | |
1689 | * version of copy operator | |
1690 | */ | |
ee239bfe IZ |
1691 | /* We need to copy in following cases: |
1692 | * a) Assignment form was called. | |
1693 | * assignshift==1, assign==T, method + 1 == off | |
1694 | * b) Increment or decrement, called directly. | |
1695 | * assignshift==0, assign==0, method + 0 == off | |
1696 | * c) Increment or decrement, translated to assignment add/subtr. | |
b267980d | 1697 | * assignshift==0, assign==T, |
ee239bfe IZ |
1698 | * force_cpy == T |
1699 | * d) Increment or decrement, translated to nomethod. | |
b267980d | 1700 | * assignshift==0, assign==0, |
ee239bfe IZ |
1701 | * force_cpy == T |
1702 | * e) Assignment form translated to nomethod. | |
1703 | * assignshift==1, assign==T, method + 1 != off | |
1704 | * force_cpy == T | |
1705 | */ | |
1706 | /* off is method, method+assignshift, or a result of opcode substitution. | |
1707 | * In the latter case assignshift==0, so only notfound case is important. | |
1708 | */ | |
1709 | if (( (method + assignshift == off) | |
1710 | && (assign || (method == inc_amg) || (method == dec_amg))) | |
1711 | || force_cpy) | |
1712 | RvDEEPCP(left); | |
a0d0e21e LW |
1713 | { |
1714 | dSP; | |
1715 | BINOP myop; | |
1716 | SV* res; | |
54310121 | 1717 | bool oldcatch = CATCH_GET; |
a0d0e21e | 1718 | |
54310121 | 1719 | CATCH_SET(TRUE); |
a0d0e21e LW |
1720 | Zero(&myop, 1, BINOP); |
1721 | myop.op_last = (OP *) &myop; | |
1722 | myop.op_next = Nullop; | |
54310121 | 1723 | myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED; |
a0d0e21e | 1724 | |
e788e7d3 | 1725 | PUSHSTACKi(PERLSI_OVERLOAD); |
a0d0e21e | 1726 | ENTER; |
462e5cf6 | 1727 | SAVEOP(); |
533c011a | 1728 | PL_op = (OP *) &myop; |
3280af22 | 1729 | if (PERLDB_SUB && PL_curstash != PL_debstash) |
533c011a | 1730 | PL_op->op_private |= OPpENTERSUB_DB; |
a0d0e21e | 1731 | PUTBACK; |
cea2e8a9 | 1732 | pp_pushmark(); |
a0d0e21e | 1733 | |
924508f0 | 1734 | EXTEND(SP, notfound + 5); |
a0d0e21e LW |
1735 | PUSHs(lr>0? right: left); |
1736 | PUSHs(lr>0? left: right); | |
3280af22 | 1737 | PUSHs( lr > 0 ? &PL_sv_yes : ( assign ? &PL_sv_undef : &PL_sv_no )); |
a0d0e21e | 1738 | if (notfound) { |
89ffc314 | 1739 | PUSHs( sv_2mortal(newSVpv(AMG_id2name(method + assignshift),0))); |
a0d0e21e LW |
1740 | } |
1741 | PUSHs((SV*)cv); | |
1742 | PUTBACK; | |
1743 | ||
155aba94 | 1744 | if ((PL_op = Perl_pp_entersub(aTHX))) |
cea2e8a9 | 1745 | CALLRUNOPS(aTHX); |
a0d0e21e LW |
1746 | LEAVE; |
1747 | SPAGAIN; | |
1748 | ||
1749 | res=POPs; | |
ebafeae7 | 1750 | PUTBACK; |
d3acc0f7 | 1751 | POPSTACK; |
54310121 | 1752 | CATCH_SET(oldcatch); |
a0d0e21e | 1753 | |
a0d0e21e | 1754 | if (postpr) { |
9c5ffd7c | 1755 | int ans=0; |
a0d0e21e LW |
1756 | switch (method) { |
1757 | case le_amg: | |
1758 | case sle_amg: | |
1759 | ans=SvIV(res)<=0; break; | |
1760 | case lt_amg: | |
1761 | case slt_amg: | |
1762 | ans=SvIV(res)<0; break; | |
1763 | case ge_amg: | |
1764 | case sge_amg: | |
1765 | ans=SvIV(res)>=0; break; | |
1766 | case gt_amg: | |
1767 | case sgt_amg: | |
1768 | ans=SvIV(res)>0; break; | |
1769 | case eq_amg: | |
1770 | case seq_amg: | |
1771 | ans=SvIV(res)==0; break; | |
1772 | case ne_amg: | |
1773 | case sne_amg: | |
1774 | ans=SvIV(res)!=0; break; | |
1775 | case inc_amg: | |
1776 | case dec_amg: | |
bbce6d69 | 1777 | SvSetSV(left,res); return left; |
dc437b57 | 1778 | case not_amg: |
fe7ac86a | 1779 | ans=!SvTRUE(res); break; |
a0d0e21e | 1780 | } |
54310121 | 1781 | return boolSV(ans); |
748a9306 LW |
1782 | } else if (method==copy_amg) { |
1783 | if (!SvROK(res)) { | |
cea2e8a9 | 1784 | Perl_croak(aTHX_ "Copy method did not return a reference"); |
748a9306 LW |
1785 | } |
1786 | return SvREFCNT_inc(SvRV(res)); | |
a0d0e21e LW |
1787 | } else { |
1788 | return res; | |
1789 | } | |
1790 | } | |
1791 | } | |
c9d5ac95 GS |
1792 | |
1793 | /* | |
1794 | =for apidoc is_gv_magical | |
1795 | ||
1796 | Returns C<TRUE> if given the name of a magical GV. | |
1797 | ||
1798 | Currently only useful internally when determining if a GV should be | |
1799 | created even in rvalue contexts. | |
1800 | ||
1801 | C<flags> is not used at present but available for future extension to | |
1802 | allow selecting particular classes of magical variable. | |
1803 | ||
1804 | =cut | |
1805 | */ | |
1806 | bool | |
1807 | Perl_is_gv_magical(pTHX_ char *name, STRLEN len, U32 flags) | |
1808 | { | |
1809 | if (!len) | |
1810 | return FALSE; | |
1811 | ||
1812 | switch (*name) { | |
1813 | case 'I': | |
1814 | if (len == 3 && strEQ(name, "ISA")) | |
1815 | goto yes; | |
1816 | break; | |
1817 | case 'O': | |
1818 | if (len == 8 && strEQ(name, "OVERLOAD")) | |
1819 | goto yes; | |
1820 | break; | |
1821 | case 'S': | |
1822 | if (len == 3 && strEQ(name, "SIG")) | |
1823 | goto yes; | |
1824 | break; | |
ac27b0f5 NIS |
1825 | case '\017': /* $^O & $^OPEN */ |
1826 | if (len == 1 | |
563aca73 | 1827 | || (len == 4 && strEQ(name, "\017PEN"))) |
ac27b0f5 NIS |
1828 | { |
1829 | goto yes; | |
1830 | } | |
1831 | break; | |
fde18df1 | 1832 | case '\025': |
a05d7ebb | 1833 | if (len > 1 && strEQ(name, "\025NICODE")) |
fde18df1 | 1834 | goto yes; |
c9d5ac95 GS |
1835 | case '\027': /* $^W & $^WARNING_BITS */ |
1836 | if (len == 1 | |
1837 | || (len == 12 && strEQ(name, "\027ARNING_BITS")) | |
fde18df1 | 1838 | ) |
c9d5ac95 GS |
1839 | { |
1840 | goto yes; | |
1841 | } | |
1842 | break; | |
1843 | ||
1844 | case '&': | |
1845 | case '`': | |
1846 | case '\'': | |
1847 | case ':': | |
1848 | case '?': | |
1849 | case '!': | |
1850 | case '-': | |
1851 | case '#': | |
c9d5ac95 GS |
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 '+': | |
1867 | case ';': | |
1868 | case ']': | |
1869 | case '\001': /* $^A */ | |
1870 | case '\003': /* $^C */ | |
1871 | case '\004': /* $^D */ | |
1872 | case '\005': /* $^E */ | |
1873 | case '\006': /* $^F */ | |
1874 | case '\010': /* $^H */ | |
1875 | case '\011': /* $^I, NOT \t in EBCDIC */ | |
1876 | case '\014': /* $^L */ | |
a01268b5 | 1877 | case '\016': /* $^N */ |
c9d5ac95 GS |
1878 | case '\020': /* $^P */ |
1879 | case '\023': /* $^S */ | |
c9d5ac95 GS |
1880 | case '\026': /* $^V */ |
1881 | if (len == 1) | |
1882 | goto yes; | |
1883 | break; | |
eb27b65e AMS |
1884 | case '\024': /* $^T, ${^TAINT} */ |
1885 | if (len == 1 || strEQ(name, "\024AINT")) | |
1886 | goto yes; | |
1887 | break; | |
c9d5ac95 GS |
1888 | case '1': |
1889 | case '2': | |
1890 | case '3': | |
1891 | case '4': | |
1892 | case '5': | |
1893 | case '6': | |
1894 | case '7': | |
1895 | case '8': | |
1896 | case '9': | |
1897 | if (len > 1) { | |
1898 | char *end = name + len; | |
1899 | while (--end > name) { | |
1900 | if (!isDIGIT(*end)) | |
1901 | return FALSE; | |
1902 | } | |
1903 | } | |
1904 | yes: | |
1905 | return TRUE; | |
1906 | default: | |
1907 | break; | |
1908 | } | |
1909 | return FALSE; | |
1910 | } |