Commit | Line | Data |
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a0d0e21e | 1 | /* gv.c |
79072805 | 2 | * |
bc89e66f | 3 | * Copyright (c) 1991-2001, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * 'Mercy!' cried Gandalf. 'If the giving of information is to be the cure | |
12 | * of your inquisitiveness, I shall spend all the rest of my days answering | |
13 | * you. What more do you want to know?' | |
14 | * 'The names of all the stars, and of all living things, and the whole | |
15 | * history of Middle-earth and Over-heaven and of the Sundering Seas,' | |
16 | * laughed Pippin. | |
79072805 LW |
17 | */ |
18 | ||
19 | #include "EXTERN.h" | |
864dbfa3 | 20 | #define PERL_IN_GV_C |
79072805 LW |
21 | #include "perl.h" |
22 | ||
23 | GV * | |
864dbfa3 | 24 | Perl_gv_AVadd(pTHX_ register GV *gv) |
79072805 | 25 | { |
a0d0e21e | 26 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
cea2e8a9 | 27 | Perl_croak(aTHX_ "Bad symbol for array"); |
79072805 LW |
28 | if (!GvAV(gv)) |
29 | GvAV(gv) = newAV(); | |
30 | return gv; | |
31 | } | |
32 | ||
33 | GV * | |
864dbfa3 | 34 | Perl_gv_HVadd(pTHX_ register GV *gv) |
79072805 | 35 | { |
a0d0e21e | 36 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
cea2e8a9 | 37 | Perl_croak(aTHX_ "Bad symbol for hash"); |
79072805 | 38 | if (!GvHV(gv)) |
463ee0b2 | 39 | GvHV(gv) = newHV(); |
79072805 LW |
40 | return gv; |
41 | } | |
42 | ||
43 | GV * | |
864dbfa3 | 44 | Perl_gv_IOadd(pTHX_ register GV *gv) |
a0d0e21e LW |
45 | { |
46 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) | |
cea2e8a9 | 47 | Perl_croak(aTHX_ "Bad symbol for filehandle"); |
5bd07a3d | 48 | if (!GvIOp(gv)) { |
7fb37951 AMS |
49 | #ifdef GV_UNIQUE_CHECK |
50 | if (GvUNIQUE(gv)) { | |
51 | Perl_croak(aTHX_ "Bad symbol for filehandle (GV is unique)"); | |
5bd07a3d DM |
52 | } |
53 | #endif | |
a0d0e21e | 54 | GvIOp(gv) = newIO(); |
5bd07a3d | 55 | } |
a0d0e21e LW |
56 | return gv; |
57 | } | |
58 | ||
59 | GV * | |
864dbfa3 | 60 | Perl_gv_fetchfile(pTHX_ const char *name) |
79072805 | 61 | { |
eacec437 | 62 | char smallbuf[256]; |
53d95988 | 63 | char *tmpbuf; |
8ebc5c01 | 64 | STRLEN tmplen; |
79072805 LW |
65 | GV *gv; |
66 | ||
1d7c1841 GS |
67 | if (!PL_defstash) |
68 | return Nullgv; | |
69 | ||
53d95988 CS |
70 | tmplen = strlen(name) + 2; |
71 | if (tmplen < sizeof smallbuf) | |
72 | tmpbuf = smallbuf; | |
73 | else | |
74 | New(603, tmpbuf, tmplen + 1, char); | |
0ac0412a | 75 | /* This is where the debugger's %{"::_<$filename"} hash is created */ |
53d95988 CS |
76 | tmpbuf[0] = '_'; |
77 | tmpbuf[1] = '<'; | |
78 | strcpy(tmpbuf + 2, name); | |
3280af22 | 79 | gv = *(GV**)hv_fetch(PL_defstash, tmpbuf, tmplen, TRUE); |
1d7c1841 | 80 | if (!isGV(gv)) { |
3280af22 | 81 | gv_init(gv, PL_defstash, tmpbuf, tmplen, FALSE); |
1d7c1841 GS |
82 | sv_setpv(GvSV(gv), name); |
83 | if (PERLDB_LINE) | |
14befaf4 | 84 | hv_magic(GvHVn(gv_AVadd(gv)), Nullgv, PERL_MAGIC_dbfile); |
1d7c1841 | 85 | } |
53d95988 CS |
86 | if (tmpbuf != smallbuf) |
87 | Safefree(tmpbuf); | |
79072805 LW |
88 | return gv; |
89 | } | |
90 | ||
463ee0b2 | 91 | void |
864dbfa3 | 92 | Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi) |
463ee0b2 LW |
93 | { |
94 | register GP *gp; | |
55d729e4 GS |
95 | bool doproto = SvTYPE(gv) > SVt_NULL; |
96 | char *proto = (doproto && SvPOK(gv)) ? SvPVX(gv) : NULL; | |
463ee0b2 | 97 | |
dc437b57 | 98 | sv_upgrade((SV*)gv, SVt_PVGV); |
55d729e4 GS |
99 | if (SvLEN(gv)) { |
100 | if (proto) { | |
101 | SvPVX(gv) = NULL; | |
102 | SvLEN(gv) = 0; | |
103 | SvPOK_off(gv); | |
104 | } else | |
105 | Safefree(SvPVX(gv)); | |
106 | } | |
44a8e56a | 107 | Newz(602, gp, 1, GP); |
8990e307 | 108 | GvGP(gv) = gp_ref(gp); |
463ee0b2 | 109 | GvSV(gv) = NEWSV(72,0); |
1d7c1841 GS |
110 | GvLINE(gv) = CopLINE(PL_curcop); |
111 | GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : ""; | |
005a453c | 112 | GvCVGEN(gv) = 0; |
463ee0b2 | 113 | GvEGV(gv) = gv; |
14befaf4 | 114 | sv_magic((SV*)gv, (SV*)gv, PERL_MAGIC_glob, Nullch, 0); |
85aff577 | 115 | GvSTASH(gv) = (HV*)SvREFCNT_inc(stash); |
a0d0e21e | 116 | GvNAME(gv) = savepvn(name, len); |
463ee0b2 | 117 | GvNAMELEN(gv) = len; |
23ad5bf5 | 118 | if (multi || doproto) /* doproto means it _was_ mentioned */ |
a5f75d66 | 119 | GvMULTI_on(gv); |
55d729e4 | 120 | if (doproto) { /* Replicate part of newSUB here. */ |
57ff9a15 | 121 | SvIOK_off(gv); |
55d729e4 | 122 | ENTER; |
b099ddc0 | 123 | /* XXX unsafe for threads if eval_owner isn't held */ |
55d729e4 | 124 | start_subparse(0,0); /* Create CV in compcv. */ |
3280af22 | 125 | GvCV(gv) = PL_compcv; |
55d729e4 GS |
126 | LEAVE; |
127 | ||
3280af22 | 128 | PL_sub_generation++; |
65c50114 | 129 | CvGV(GvCV(gv)) = gv; |
e0d088d0 | 130 | CvFILE_set_from_cop(GvCV(gv), PL_curcop); |
3280af22 | 131 | CvSTASH(GvCV(gv)) = PL_curstash; |
4d1ff10f | 132 | #ifdef USE_5005THREADS |
55d729e4 | 133 | CvOWNER(GvCV(gv)) = 0; |
1cfa4ec7 | 134 | if (!CvMUTEXP(GvCV(gv))) { |
b0a484d2 | 135 | New(666, CvMUTEXP(GvCV(gv)), 1, perl_mutex); |
1cfa4ec7 GS |
136 | MUTEX_INIT(CvMUTEXP(GvCV(gv))); |
137 | } | |
4d1ff10f | 138 | #endif /* USE_5005THREADS */ |
55d729e4 GS |
139 | if (proto) { |
140 | sv_setpv((SV*)GvCV(gv), proto); | |
141 | Safefree(proto); | |
142 | } | |
143 | } | |
463ee0b2 LW |
144 | } |
145 | ||
76e3520e | 146 | STATIC void |
cea2e8a9 | 147 | S_gv_init_sv(pTHX_ GV *gv, I32 sv_type) |
a0d0e21e LW |
148 | { |
149 | switch (sv_type) { | |
150 | case SVt_PVIO: | |
151 | (void)GvIOn(gv); | |
152 | break; | |
153 | case SVt_PVAV: | |
154 | (void)GvAVn(gv); | |
155 | break; | |
156 | case SVt_PVHV: | |
157 | (void)GvHVn(gv); | |
158 | break; | |
159 | } | |
160 | } | |
161 | ||
954c1994 GS |
162 | /* |
163 | =for apidoc gv_fetchmeth | |
164 | ||
165 | Returns the glob with the given C<name> and a defined subroutine or | |
166 | C<NULL>. The glob lives in the given C<stash>, or in the stashes | |
07766739 | 167 | accessible via @ISA and UNIVERSAL::. |
954c1994 GS |
168 | |
169 | The argument C<level> should be either 0 or -1. If C<level==0>, as a | |
170 | side-effect creates a glob with the given C<name> in the given C<stash> | |
171 | which in the case of success contains an alias for the subroutine, and sets | |
b267980d | 172 | up caching info for this glob. Similarly for all the searched stashes. |
954c1994 GS |
173 | |
174 | This function grants C<"SUPER"> token as a postfix of the stash name. The | |
175 | GV returned from C<gv_fetchmeth> may be a method cache entry, which is not | |
4929bf7b | 176 | visible to Perl code. So when calling C<call_sv>, you should not use |
954c1994 | 177 | the GV directly; instead, you should use the method's CV, which can be |
b267980d | 178 | obtained from the GV with the C<GvCV> macro. |
954c1994 GS |
179 | |
180 | =cut | |
181 | */ | |
182 | ||
79072805 | 183 | GV * |
864dbfa3 | 184 | Perl_gv_fetchmeth(pTHX_ HV *stash, const char *name, STRLEN len, I32 level) |
79072805 LW |
185 | { |
186 | AV* av; | |
463ee0b2 | 187 | GV* topgv; |
79072805 | 188 | GV* gv; |
463ee0b2 | 189 | GV** gvp; |
748a9306 | 190 | CV* cv; |
a0d0e21e | 191 | |
af09ea45 IK |
192 | /* UNIVERSAL methods should be callable without a stash */ |
193 | if (!stash) { | |
194 | level = -1; /* probably appropriate */ | |
195 | if(!(stash = gv_stashpvn("UNIVERSAL", 9, FALSE))) | |
196 | return 0; | |
197 | } | |
198 | ||
44a8e56a | 199 | if ((level > 100) || (level < -100)) |
cea2e8a9 | 200 | Perl_croak(aTHX_ "Recursive inheritance detected while looking for method '%s' in package '%s'", |
3e0ccd42 | 201 | name, HvNAME(stash)); |
463ee0b2 | 202 | |
cea2e8a9 | 203 | DEBUG_o( Perl_deb(aTHX_ "Looking for method %s in package %s\n",name,HvNAME(stash)) ); |
44a8e56a | 204 | |
205 | gvp = (GV**)hv_fetch(stash, name, len, (level >= 0)); | |
206 | if (!gvp) | |
207 | topgv = Nullgv; | |
208 | else { | |
209 | topgv = *gvp; | |
210 | if (SvTYPE(topgv) != SVt_PVGV) | |
211 | gv_init(topgv, stash, name, len, TRUE); | |
155aba94 | 212 | if ((cv = GvCV(topgv))) { |
44a8e56a | 213 | /* If genuine method or valid cache entry, use it */ |
3280af22 | 214 | if (!GvCVGEN(topgv) || GvCVGEN(topgv) == PL_sub_generation) |
7a4c00b4 | 215 | return topgv; |
44a8e56a | 216 | /* Stale cached entry: junk it */ |
217 | SvREFCNT_dec(cv); | |
218 | GvCV(topgv) = cv = Nullcv; | |
219 | GvCVGEN(topgv) = 0; | |
748a9306 | 220 | } |
3280af22 | 221 | else if (GvCVGEN(topgv) == PL_sub_generation) |
005a453c | 222 | return 0; /* cache indicates sub doesn't exist */ |
463ee0b2 | 223 | } |
79072805 | 224 | |
9607fc9c | 225 | gvp = (GV**)hv_fetch(stash, "ISA", 3, FALSE); |
3280af22 | 226 | av = (gvp && (gv = *gvp) && gv != (GV*)&PL_sv_undef) ? GvAV(gv) : Nullav; |
9607fc9c | 227 | |
fb73857a | 228 | /* create and re-create @.*::SUPER::ISA on demand */ |
229 | if (!av || !SvMAGIC(av)) { | |
9607fc9c | 230 | char* packname = HvNAME(stash); |
231 | STRLEN packlen = strlen(packname); | |
232 | ||
233 | if (packlen >= 7 && strEQ(packname + packlen - 7, "::SUPER")) { | |
234 | HV* basestash; | |
235 | ||
236 | packlen -= 7; | |
237 | basestash = gv_stashpvn(packname, packlen, TRUE); | |
238 | gvp = (GV**)hv_fetch(basestash, "ISA", 3, FALSE); | |
3280af22 | 239 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
9607fc9c | 240 | gvp = (GV**)hv_fetch(stash, "ISA", 3, TRUE); |
241 | if (!gvp || !(gv = *gvp)) | |
cea2e8a9 | 242 | Perl_croak(aTHX_ "Cannot create %s::ISA", HvNAME(stash)); |
9607fc9c | 243 | if (SvTYPE(gv) != SVt_PVGV) |
244 | gv_init(gv, stash, "ISA", 3, TRUE); | |
245 | SvREFCNT_dec(GvAV(gv)); | |
246 | GvAV(gv) = (AV*)SvREFCNT_inc(av); | |
247 | } | |
248 | } | |
249 | } | |
250 | ||
251 | if (av) { | |
79072805 | 252 | SV** svp = AvARRAY(av); |
93965878 NIS |
253 | /* NOTE: No support for tied ISA */ |
254 | I32 items = AvFILLp(av) + 1; | |
79072805 | 255 | while (items--) { |
79072805 | 256 | SV* sv = *svp++; |
a0d0e21e | 257 | HV* basestash = gv_stashsv(sv, FALSE); |
9bbf4081 | 258 | if (!basestash) { |
599cee73 | 259 | if (ckWARN(WARN_MISC)) |
cea2e8a9 | 260 | Perl_warner(aTHX_ WARN_MISC, "Can't locate package %s for @%s::ISA", |
463ee0b2 | 261 | SvPVX(sv), HvNAME(stash)); |
79072805 LW |
262 | continue; |
263 | } | |
44a8e56a | 264 | gv = gv_fetchmeth(basestash, name, len, |
265 | (level >= 0) ? level + 1 : level - 1); | |
266 | if (gv) | |
267 | goto gotcha; | |
79072805 LW |
268 | } |
269 | } | |
a0d0e21e | 270 | |
9607fc9c | 271 | /* if at top level, try UNIVERSAL */ |
272 | ||
44a8e56a | 273 | if (level == 0 || level == -1) { |
9607fc9c | 274 | HV* lastchance; |
275 | ||
155aba94 GS |
276 | if ((lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE))) { |
277 | if ((gv = gv_fetchmeth(lastchance, name, len, | |
278 | (level >= 0) ? level + 1 : level - 1))) | |
279 | { | |
44a8e56a | 280 | gotcha: |
dc848c6f | 281 | /* |
282 | * Cache method in topgv if: | |
283 | * 1. topgv has no synonyms (else inheritance crosses wires) | |
284 | * 2. method isn't a stub (else AUTOLOAD fails spectacularly) | |
285 | */ | |
286 | if (topgv && | |
287 | GvREFCNT(topgv) == 1 && | |
288 | (cv = GvCV(gv)) && | |
289 | (CvROOT(cv) || CvXSUB(cv))) | |
290 | { | |
155aba94 | 291 | if ((cv = GvCV(topgv))) |
44a8e56a | 292 | SvREFCNT_dec(cv); |
293 | GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv)); | |
3280af22 | 294 | GvCVGEN(topgv) = PL_sub_generation; |
44a8e56a | 295 | } |
a0d0e21e LW |
296 | return gv; |
297 | } | |
005a453c JP |
298 | else if (topgv && GvREFCNT(topgv) == 1) { |
299 | /* cache the fact that the method is not defined */ | |
3280af22 | 300 | GvCVGEN(topgv) = PL_sub_generation; |
005a453c | 301 | } |
a0d0e21e LW |
302 | } |
303 | } | |
304 | ||
79072805 LW |
305 | return 0; |
306 | } | |
307 | ||
954c1994 GS |
308 | /* |
309 | =for apidoc gv_fetchmethod | |
310 | ||
6d0f518e | 311 | See L<gv_fetchmethod_autoload>. |
954c1994 GS |
312 | |
313 | =cut | |
314 | */ | |
315 | ||
79072805 | 316 | GV * |
864dbfa3 | 317 | Perl_gv_fetchmethod(pTHX_ HV *stash, const char *name) |
463ee0b2 | 318 | { |
dc848c6f | 319 | return gv_fetchmethod_autoload(stash, name, TRUE); |
320 | } | |
321 | ||
954c1994 GS |
322 | /* |
323 | =for apidoc gv_fetchmethod_autoload | |
324 | ||
325 | Returns the glob which contains the subroutine to call to invoke the method | |
326 | on the C<stash>. In fact in the presence of autoloading this may be the | |
327 | glob for "AUTOLOAD". In this case the corresponding variable $AUTOLOAD is | |
b267980d | 328 | already setup. |
954c1994 GS |
329 | |
330 | The third parameter of C<gv_fetchmethod_autoload> determines whether | |
331 | AUTOLOAD lookup is performed if the given method is not present: non-zero | |
b267980d | 332 | means yes, look for AUTOLOAD; zero means no, don't look for AUTOLOAD. |
954c1994 | 333 | Calling C<gv_fetchmethod> is equivalent to calling C<gv_fetchmethod_autoload> |
b267980d | 334 | with a non-zero C<autoload> parameter. |
954c1994 GS |
335 | |
336 | These functions grant C<"SUPER"> token as a prefix of the method name. Note | |
337 | that if you want to keep the returned glob for a long time, you need to | |
338 | check for it being "AUTOLOAD", since at the later time the call may load a | |
339 | different subroutine due to $AUTOLOAD changing its value. Use the glob | |
b267980d | 340 | created via a side effect to do this. |
954c1994 GS |
341 | |
342 | These functions have the same side-effects and as C<gv_fetchmeth> with | |
343 | C<level==0>. C<name> should be writable if contains C<':'> or C<' | |
344 | ''>. The warning against passing the GV returned by C<gv_fetchmeth> to | |
b267980d | 345 | C<call_sv> apply equally to these functions. |
954c1994 GS |
346 | |
347 | =cut | |
348 | */ | |
349 | ||
dc848c6f | 350 | GV * |
864dbfa3 | 351 | Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload) |
dc848c6f | 352 | { |
08105a92 GS |
353 | register const char *nend; |
354 | const char *nsplit = 0; | |
a0d0e21e | 355 | GV* gv; |
b267980d | 356 | |
463ee0b2 | 357 | for (nend = name; *nend; nend++) { |
9607fc9c | 358 | if (*nend == '\'') |
a0d0e21e | 359 | nsplit = nend; |
9607fc9c | 360 | else if (*nend == ':' && *(nend + 1) == ':') |
361 | nsplit = ++nend; | |
a0d0e21e LW |
362 | } |
363 | if (nsplit) { | |
08105a92 | 364 | const char *origname = name; |
a0d0e21e | 365 | name = nsplit + 1; |
a0d0e21e LW |
366 | if (*nsplit == ':') |
367 | --nsplit; | |
9607fc9c | 368 | if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) { |
369 | /* ->SUPER::method should really be looked up in original stash */ | |
cea2e8a9 | 370 | SV *tmpstr = sv_2mortal(Perl_newSVpvf(aTHX_ "%s::SUPER", |
1d7c1841 | 371 | CopSTASHPV(PL_curcop))); |
af09ea45 | 372 | /* __PACKAGE__::SUPER stash should be autovivified */ |
9607fc9c | 373 | stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE); |
cea2e8a9 | 374 | DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n", |
9607fc9c | 375 | origname, HvNAME(stash), name) ); |
4633a7c4 | 376 | } |
9607fc9c | 377 | else |
af09ea45 IK |
378 | /* don't autovifify if ->NoSuchStash::method */ |
379 | stash = gv_stashpvn(origname, nsplit - origname, FALSE); | |
4633a7c4 LW |
380 | } |
381 | ||
9607fc9c | 382 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
a0d0e21e | 383 | if (!gv) { |
2f6e0fe7 | 384 | if (strEQ(name,"import") || strEQ(name,"unimport")) |
3280af22 | 385 | gv = (GV*)&PL_sv_yes; |
dc848c6f | 386 | else if (autoload) |
54310121 | 387 | gv = gv_autoload4(stash, name, nend - name, TRUE); |
463ee0b2 | 388 | } |
dc848c6f | 389 | else if (autoload) { |
390 | CV* cv = GvCV(gv); | |
09280a33 CS |
391 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
392 | GV* stubgv; | |
393 | GV* autogv; | |
394 | ||
395 | if (CvANON(cv)) | |
396 | stubgv = gv; | |
397 | else { | |
398 | stubgv = CvGV(cv); | |
399 | if (GvCV(stubgv) != cv) /* orphaned import */ | |
400 | stubgv = gv; | |
401 | } | |
402 | autogv = gv_autoload4(GvSTASH(stubgv), | |
403 | GvNAME(stubgv), GvNAMELEN(stubgv), TRUE); | |
dc848c6f | 404 | if (autogv) |
405 | gv = autogv; | |
406 | } | |
407 | } | |
44a8e56a | 408 | |
409 | return gv; | |
410 | } | |
411 | ||
412 | GV* | |
864dbfa3 | 413 | Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method) |
44a8e56a | 414 | { |
df3728a2 JH |
415 | char autoload[] = "AUTOLOAD"; |
416 | STRLEN autolen = sizeof(autoload)-1; | |
44a8e56a | 417 | GV* gv; |
418 | CV* cv; | |
419 | HV* varstash; | |
420 | GV* vargv; | |
421 | SV* varsv; | |
422 | ||
af09ea45 IK |
423 | if (!stash) |
424 | return Nullgv; /* UNIVERSAL::AUTOLOAD could cause trouble */ | |
44a8e56a | 425 | if (len == autolen && strnEQ(name, autoload, autolen)) |
426 | return Nullgv; | |
dc848c6f | 427 | if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE))) |
428 | return Nullgv; | |
429 | cv = GvCV(gv); | |
430 | ||
adb5a9ae | 431 | if (!(CvROOT(cv) || CvXSUB(cv))) |
ed850460 JH |
432 | return Nullgv; |
433 | ||
dc848c6f | 434 | /* |
435 | * Inheriting AUTOLOAD for non-methods works ... for now. | |
436 | */ | |
b267980d | 437 | if (ckWARN(WARN_DEPRECATED) && !method && |
599cee73 | 438 | (GvCVGEN(gv) || GvSTASH(gv) != stash)) |
cea2e8a9 | 439 | Perl_warner(aTHX_ WARN_DEPRECATED, |
dc848c6f | 440 | "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated", |
441 | HvNAME(stash), (int)len, name); | |
44a8e56a | 442 | |
4d1ff10f | 443 | #ifndef USE_5005THREADS |
adb5a9ae DM |
444 | if (CvXSUB(cv)) { |
445 | /* rather than lookup/init $AUTOLOAD here | |
446 | * only to have the XSUB do another lookup for $AUTOLOAD | |
447 | * and split that value on the last '::', | |
448 | * pass along the same data via some unused fields in the CV | |
449 | */ | |
450 | CvSTASH(cv) = stash; | |
0222aa7d | 451 | SvPVX(cv) = (char *)name; /* cast to lose constness warning */ |
adb5a9ae DM |
452 | SvCUR(cv) = len; |
453 | return gv; | |
454 | } | |
455 | #endif | |
456 | ||
44a8e56a | 457 | /* |
458 | * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name. | |
459 | * The subroutine's original name may not be "AUTOLOAD", so we don't | |
460 | * use that, but for lack of anything better we will use the sub's | |
461 | * original package to look up $AUTOLOAD. | |
462 | */ | |
463 | varstash = GvSTASH(CvGV(cv)); | |
464 | vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE); | |
3d35f11b GS |
465 | ENTER; |
466 | ||
4d1ff10f | 467 | #ifdef USE_5005THREADS |
4755096e | 468 | sv_lock((SV *)varstash); |
3d35f11b | 469 | #endif |
44a8e56a | 470 | if (!isGV(vargv)) |
471 | gv_init(vargv, varstash, autoload, autolen, FALSE); | |
3d35f11b | 472 | LEAVE; |
44a8e56a | 473 | varsv = GvSV(vargv); |
4d1ff10f | 474 | #ifdef USE_5005THREADS |
4755096e | 475 | sv_lock(varsv); |
3d35f11b | 476 | #endif |
44a8e56a | 477 | sv_setpv(varsv, HvNAME(stash)); |
478 | sv_catpvn(varsv, "::", 2); | |
479 | sv_catpvn(varsv, name, len); | |
480 | SvTAINTED_off(varsv); | |
a0d0e21e LW |
481 | return gv; |
482 | } | |
483 | ||
d2c93421 RH |
484 | /* The "gv" parameter should be the glob known to Perl code as *! |
485 | * The scalar must already have been magicalized. | |
486 | */ | |
487 | STATIC void | |
488 | S_require_errno(pTHX_ GV *gv) | |
489 | { | |
490 | HV* stash = gv_stashpvn("Errno",5,FALSE); | |
491 | ||
492 | if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) { | |
493 | dSP; | |
494 | PUTBACK; | |
495 | ENTER; | |
496 | save_scalar(gv); /* keep the value of $! */ | |
497 | require_pv("Errno.pm"); | |
498 | LEAVE; | |
499 | SPAGAIN; | |
500 | stash = gv_stashpvn("Errno",5,FALSE); | |
501 | if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) | |
502 | Perl_croak(aTHX_ "Can't use %%! because Errno.pm is not available"); | |
503 | } | |
504 | } | |
505 | ||
954c1994 GS |
506 | /* |
507 | =for apidoc gv_stashpv | |
508 | ||
386d01d6 GS |
509 | Returns a pointer to the stash for a specified package. C<name> should |
510 | be a valid UTF-8 string. If C<create> is set then the package will be | |
511 | created if it does not already exist. If C<create> is not set and the | |
512 | package does not exist then NULL is returned. | |
954c1994 GS |
513 | |
514 | =cut | |
515 | */ | |
516 | ||
a0d0e21e | 517 | HV* |
864dbfa3 | 518 | Perl_gv_stashpv(pTHX_ const char *name, I32 create) |
a0d0e21e | 519 | { |
dc437b57 | 520 | return gv_stashpvn(name, strlen(name), create); |
521 | } | |
522 | ||
523 | HV* | |
864dbfa3 | 524 | Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 create) |
dc437b57 | 525 | { |
46fc3d4c | 526 | char smallbuf[256]; |
527 | char *tmpbuf; | |
a0d0e21e LW |
528 | HV *stash; |
529 | GV *tmpgv; | |
dc437b57 | 530 | |
46fc3d4c | 531 | if (namelen + 3 < sizeof smallbuf) |
532 | tmpbuf = smallbuf; | |
533 | else | |
534 | New(606, tmpbuf, namelen + 3, char); | |
dc437b57 | 535 | Copy(name,tmpbuf,namelen,char); |
536 | tmpbuf[namelen++] = ':'; | |
537 | tmpbuf[namelen++] = ':'; | |
538 | tmpbuf[namelen] = '\0'; | |
46fc3d4c | 539 | tmpgv = gv_fetchpv(tmpbuf, create, SVt_PVHV); |
540 | if (tmpbuf != smallbuf) | |
541 | Safefree(tmpbuf); | |
a0d0e21e LW |
542 | if (!tmpgv) |
543 | return 0; | |
544 | if (!GvHV(tmpgv)) | |
545 | GvHV(tmpgv) = newHV(); | |
546 | stash = GvHV(tmpgv); | |
547 | if (!HvNAME(stash)) | |
548 | HvNAME(stash) = savepv(name); | |
549 | return stash; | |
463ee0b2 LW |
550 | } |
551 | ||
954c1994 GS |
552 | /* |
553 | =for apidoc gv_stashsv | |
554 | ||
386d01d6 GS |
555 | Returns a pointer to the stash for a specified package, which must be a |
556 | valid UTF-8 string. See C<gv_stashpv>. | |
954c1994 GS |
557 | |
558 | =cut | |
559 | */ | |
560 | ||
a0d0e21e | 561 | HV* |
864dbfa3 | 562 | Perl_gv_stashsv(pTHX_ SV *sv, I32 create) |
a0d0e21e | 563 | { |
dc437b57 | 564 | register char *ptr; |
565 | STRLEN len; | |
566 | ptr = SvPV(sv,len); | |
567 | return gv_stashpvn(ptr, len, create); | |
a0d0e21e LW |
568 | } |
569 | ||
570 | ||
463ee0b2 | 571 | GV * |
864dbfa3 | 572 | Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) |
79072805 | 573 | { |
08105a92 | 574 | register const char *name = nambeg; |
463ee0b2 | 575 | register GV *gv = 0; |
79072805 | 576 | GV**gvp; |
79072805 | 577 | I32 len; |
08105a92 | 578 | register const char *namend; |
463ee0b2 | 579 | HV *stash = 0; |
79072805 | 580 | |
c07a80fd | 581 | if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */ |
582 | name++; | |
583 | ||
79072805 | 584 | for (namend = name; *namend; namend++) { |
1d7c1841 GS |
585 | if ((*namend == ':' && namend[1] == ':') |
586 | || (*namend == '\'' && namend[1])) | |
463ee0b2 | 587 | { |
463ee0b2 | 588 | if (!stash) |
3280af22 | 589 | stash = PL_defstash; |
dc437b57 | 590 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0d0e21e | 591 | return Nullgv; |
463ee0b2 | 592 | |
85e6fe83 LW |
593 | len = namend - name; |
594 | if (len > 0) { | |
3c78fafa | 595 | char smallbuf[256]; |
62b57502 | 596 | char *tmpbuf; |
62b57502 | 597 | |
3c78fafa GS |
598 | if (len + 3 < sizeof smallbuf) |
599 | tmpbuf = smallbuf; | |
62b57502 MB |
600 | else |
601 | New(601, tmpbuf, len+3, char); | |
a0d0e21e LW |
602 | Copy(name, tmpbuf, len, char); |
603 | tmpbuf[len++] = ':'; | |
604 | tmpbuf[len++] = ':'; | |
605 | tmpbuf[len] = '\0'; | |
463ee0b2 | 606 | gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); |
6fa846a0 | 607 | gv = gvp ? *gvp : Nullgv; |
3280af22 | 608 | if (gv && gv != (GV*)&PL_sv_undef) { |
6fa846a0 | 609 | if (SvTYPE(gv) != SVt_PVGV) |
0f303493 | 610 | gv_init(gv, stash, tmpbuf, len, (add & GV_ADDMULTI)); |
6fa846a0 GS |
611 | else |
612 | GvMULTI_on(gv); | |
613 | } | |
3c78fafa | 614 | if (tmpbuf != smallbuf) |
62b57502 | 615 | Safefree(tmpbuf); |
3280af22 | 616 | if (!gv || gv == (GV*)&PL_sv_undef) |
a0d0e21e | 617 | return Nullgv; |
85e6fe83 | 618 | |
463ee0b2 LW |
619 | if (!(stash = GvHV(gv))) |
620 | stash = GvHV(gv) = newHV(); | |
85e6fe83 | 621 | |
463ee0b2 | 622 | if (!HvNAME(stash)) |
a0d0e21e | 623 | HvNAME(stash) = savepvn(nambeg, namend - nambeg); |
463ee0b2 LW |
624 | } |
625 | ||
626 | if (*namend == ':') | |
627 | namend++; | |
628 | namend++; | |
629 | name = namend; | |
630 | if (!*name) | |
3280af22 | 631 | return gv ? gv : (GV*)*hv_fetch(PL_defstash, "main::", 6, TRUE); |
79072805 | 632 | } |
79072805 | 633 | } |
a0d0e21e LW |
634 | len = namend - name; |
635 | if (!len) | |
636 | len = 1; | |
463ee0b2 LW |
637 | |
638 | /* No stash in name, so see how we can default */ | |
639 | ||
640 | if (!stash) { | |
7e2040f0 | 641 | if (isIDFIRST_lazy(name)) { |
9607fc9c | 642 | bool global = FALSE; |
643 | ||
463ee0b2 | 644 | if (isUPPER(*name)) { |
9d116dd7 JH |
645 | if (*name == 'S' && ( |
646 | strEQ(name, "SIG") || | |
647 | strEQ(name, "STDIN") || | |
648 | strEQ(name, "STDOUT") || | |
649 | strEQ(name, "STDERR"))) | |
650 | global = TRUE; | |
651 | else if (*name == 'I' && strEQ(name, "INC")) | |
652 | global = TRUE; | |
653 | else if (*name == 'E' && strEQ(name, "ENV")) | |
654 | global = TRUE; | |
463ee0b2 LW |
655 | else if (*name == 'A' && ( |
656 | strEQ(name, "ARGV") || | |
9d116dd7 | 657 | strEQ(name, "ARGVOUT"))) |
463ee0b2 LW |
658 | global = TRUE; |
659 | } | |
16920d4e | 660 | else if (*name == '_' && (!name[1] || strEQ(name,"__ANON__"))) |
463ee0b2 | 661 | global = TRUE; |
9607fc9c | 662 | |
463ee0b2 | 663 | if (global) |
3280af22 NIS |
664 | stash = PL_defstash; |
665 | else if ((COP*)PL_curcop == &PL_compiling) { | |
666 | stash = PL_curstash; | |
667 | if (add && (PL_hints & HINT_STRICT_VARS) && | |
748a9306 LW |
668 | sv_type != SVt_PVCV && |
669 | sv_type != SVt_PVGV && | |
4633a7c4 | 670 | sv_type != SVt_PVFM && |
c07a80fd | 671 | sv_type != SVt_PVIO && |
377b8fbc | 672 | !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) ) |
748a9306 | 673 | { |
4633a7c4 LW |
674 | gvp = (GV**)hv_fetch(stash,name,len,0); |
675 | if (!gvp || | |
3280af22 | 676 | *gvp == (GV*)&PL_sv_undef || |
a5f75d66 AD |
677 | SvTYPE(*gvp) != SVt_PVGV) |
678 | { | |
4633a7c4 | 679 | stash = 0; |
a5f75d66 | 680 | } |
155aba94 GS |
681 | else if ((sv_type == SVt_PV && !GvIMPORTED_SV(*gvp)) || |
682 | (sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp)) || | |
683 | (sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp)) ) | |
4633a7c4 | 684 | { |
cea2e8a9 | 685 | Perl_warn(aTHX_ "Variable \"%c%s\" is not imported", |
4633a7c4 LW |
686 | sv_type == SVt_PVAV ? '@' : |
687 | sv_type == SVt_PVHV ? '%' : '$', | |
688 | name); | |
8ebc5c01 | 689 | if (GvCVu(*gvp)) |
cc507455 | 690 | Perl_warn(aTHX_ "\t(Did you mean &%s instead?)\n", name); |
a0d0e21e | 691 | stash = 0; |
4633a7c4 | 692 | } |
a0d0e21e | 693 | } |
85e6fe83 | 694 | } |
463ee0b2 | 695 | else |
1d7c1841 | 696 | stash = CopSTASH(PL_curcop); |
463ee0b2 LW |
697 | } |
698 | else | |
3280af22 | 699 | stash = PL_defstash; |
463ee0b2 LW |
700 | } |
701 | ||
702 | /* By this point we should have a stash and a name */ | |
703 | ||
a0d0e21e | 704 | if (!stash) { |
5a844595 GS |
705 | if (add) { |
706 | qerror(Perl_mess(aTHX_ | |
707 | "Global symbol \"%s%s\" requires explicit package name", | |
708 | (sv_type == SVt_PV ? "$" | |
709 | : sv_type == SVt_PVAV ? "@" | |
710 | : sv_type == SVt_PVHV ? "%" | |
711 | : ""), name)); | |
f180df80 | 712 | stash = PL_nullstash; |
a0d0e21e | 713 | } |
f180df80 GS |
714 | else |
715 | return Nullgv; | |
a0d0e21e LW |
716 | } |
717 | ||
718 | if (!SvREFCNT(stash)) /* symbol table under destruction */ | |
719 | return Nullgv; | |
720 | ||
79072805 | 721 | gvp = (GV**)hv_fetch(stash,name,len,add); |
3280af22 | 722 | if (!gvp || *gvp == (GV*)&PL_sv_undef) |
79072805 LW |
723 | return Nullgv; |
724 | gv = *gvp; | |
725 | if (SvTYPE(gv) == SVt_PVGV) { | |
a0d0e21e | 726 | if (add) { |
a5f75d66 | 727 | GvMULTI_on(gv); |
a0d0e21e | 728 | gv_init_sv(gv, sv_type); |
d2c93421 RH |
729 | if (*name=='!' && sv_type == SVt_PVHV && len==1) |
730 | require_errno(gv); | |
a0d0e21e | 731 | } |
79072805 | 732 | return gv; |
55d729e4 GS |
733 | } else if (add & GV_NOINIT) { |
734 | return gv; | |
79072805 | 735 | } |
93a17b20 LW |
736 | |
737 | /* Adding a new symbol */ | |
738 | ||
0453d815 PM |
739 | if (add & GV_ADDWARN && ckWARN_d(WARN_INTERNAL)) |
740 | Perl_warner(aTHX_ WARN_INTERNAL, "Had to create %s unexpectedly", nambeg); | |
55d729e4 | 741 | gv_init(gv, stash, name, len, add & GV_ADDMULTI); |
a0d0e21e | 742 | gv_init_sv(gv, sv_type); |
93a17b20 | 743 | |
7272584d PM |
744 | if (isALPHA(name[0]) && ! (isLEXWARN_on ? ckWARN(WARN_ONCE) |
745 | : (PL_dowarn & G_WARN_ON ) ) ) | |
0453d815 PM |
746 | GvMULTI_on(gv) ; |
747 | ||
93a17b20 LW |
748 | /* set up magic where warranted */ |
749 | switch (*name) { | |
a0d0e21e LW |
750 | case 'A': |
751 | if (strEQ(name, "ARGV")) { | |
752 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; | |
753 | } | |
754 | break; | |
a0d0e21e LW |
755 | case 'E': |
756 | if (strnEQ(name, "EXPORT", 6)) | |
a5f75d66 | 757 | GvMULTI_on(gv); |
a0d0e21e | 758 | break; |
463ee0b2 LW |
759 | case 'I': |
760 | if (strEQ(name, "ISA")) { | |
761 | AV* av = GvAVn(gv); | |
a5f75d66 | 762 | GvMULTI_on(gv); |
14befaf4 | 763 | sv_magic((SV*)av, (SV*)gv, PERL_MAGIC_isa, Nullch, 0); |
93965878 | 764 | /* NOTE: No support for tied ISA */ |
55d729e4 GS |
765 | if ((add & GV_ADDMULTI) && strEQ(nambeg,"AnyDBM_File::ISA") |
766 | && AvFILLp(av) == -1) | |
85e6fe83 | 767 | { |
a0d0e21e | 768 | char *pname; |
79cb57f6 | 769 | av_push(av, newSVpvn(pname = "NDBM_File",9)); |
dc437b57 | 770 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 771 | av_push(av, newSVpvn(pname = "DB_File",7)); |
dc437b57 | 772 | gv_stashpvn(pname, 7, TRUE); |
79cb57f6 | 773 | av_push(av, newSVpvn(pname = "GDBM_File",9)); |
dc437b57 | 774 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 775 | av_push(av, newSVpvn(pname = "SDBM_File",9)); |
dc437b57 | 776 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 777 | av_push(av, newSVpvn(pname = "ODBM_File",9)); |
dc437b57 | 778 | gv_stashpvn(pname, 9, TRUE); |
85e6fe83 | 779 | } |
463ee0b2 LW |
780 | } |
781 | break; | |
a0d0e21e LW |
782 | case 'O': |
783 | if (strEQ(name, "OVERLOAD")) { | |
784 | HV* hv = GvHVn(gv); | |
a5f75d66 | 785 | GvMULTI_on(gv); |
14befaf4 | 786 | hv_magic(hv, Nullgv, PERL_MAGIC_overload); |
a0d0e21e LW |
787 | } |
788 | break; | |
93a17b20 LW |
789 | case 'S': |
790 | if (strEQ(name, "SIG")) { | |
791 | HV *hv; | |
dc437b57 | 792 | I32 i; |
1d7c1841 | 793 | if (!PL_psig_ptr) { |
0a8e0eff NIS |
794 | Newz(73, PL_psig_ptr, SIG_SIZE, SV*); |
795 | Newz(73, PL_psig_name, SIG_SIZE, SV*); | |
796 | Newz(73, PL_psig_pend, SIG_SIZE, int); | |
1d7c1841 GS |
797 | } |
798 | GvMULTI_on(gv); | |
799 | hv = GvHVn(gv); | |
14befaf4 | 800 | hv_magic(hv, Nullgv, PERL_MAGIC_sig); |
76d3c696 | 801 | for (i = 1; i < SIG_SIZE; i++) { |
dc437b57 | 802 | SV ** init; |
1d7c1841 GS |
803 | init = hv_fetch(hv, PL_sig_name[i], strlen(PL_sig_name[i]), 1); |
804 | if (init) | |
805 | sv_setsv(*init, &PL_sv_undef); | |
22c35a8c GS |
806 | PL_psig_ptr[i] = 0; |
807 | PL_psig_name[i] = 0; | |
0a8e0eff | 808 | PL_psig_pend[i] = 0; |
dc437b57 | 809 | } |
93a17b20 LW |
810 | } |
811 | break; | |
09bef843 SB |
812 | case 'V': |
813 | if (strEQ(name, "VERSION")) | |
814 | GvMULTI_on(gv); | |
815 | break; | |
93a17b20 LW |
816 | |
817 | case '&': | |
93a17b20 | 818 | case '`': |
93a17b20 | 819 | case '\'': |
b4a9608f JP |
820 | if ( |
821 | len > 1 || | |
822 | sv_type == SVt_PVAV || | |
823 | sv_type == SVt_PVHV || | |
824 | sv_type == SVt_PVCV || | |
b4a9608f JP |
825 | sv_type == SVt_PVFM || |
826 | sv_type == SVt_PVIO | |
827 | ) { break; } | |
3280af22 | 828 | PL_sawampersand = TRUE; |
a0d0e21e | 829 | goto ro_magicalize; |
93a17b20 LW |
830 | |
831 | case ':': | |
463ee0b2 LW |
832 | if (len > 1) |
833 | break; | |
3280af22 | 834 | sv_setpv(GvSV(gv),PL_chopset); |
93a17b20 LW |
835 | goto magicalize; |
836 | ||
ff0cee69 | 837 | case '?': |
838 | if (len > 1) | |
839 | break; | |
840 | #ifdef COMPLEX_STATUS | |
07f14f54 | 841 | (void)SvUPGRADE(GvSV(gv), SVt_PVLV); |
ff0cee69 | 842 | #endif |
843 | goto magicalize; | |
844 | ||
067391ea | 845 | case '!': |
4318d5a0 | 846 | if (len > 1) |
067391ea | 847 | break; |
d2c93421 RH |
848 | |
849 | /* If %! has been used, automatically load Errno.pm. | |
850 | The require will itself set errno, so in order to | |
851 | preserve its value we have to set up the magic | |
852 | now (rather than going to magicalize) | |
853 | */ | |
854 | ||
14befaf4 | 855 | sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, len); |
d2c93421 RH |
856 | |
857 | if (sv_type == SVt_PVHV) | |
858 | require_errno(gv); | |
859 | ||
860 | break; | |
6cef1e77 IZ |
861 | case '-': |
862 | if (len > 1) | |
863 | break; | |
864 | else { | |
865 | AV* av = GvAVn(gv); | |
14befaf4 | 866 | sv_magic((SV*)av, Nullsv, PERL_MAGIC_regdata, Nullch, 0); |
03a27ae7 | 867 | SvREADONLY_on(av); |
6cef1e77 IZ |
868 | } |
869 | goto magicalize; | |
93a17b20 | 870 | case '#': |
a0d0e21e | 871 | case '*': |
599cee73 | 872 | if (ckWARN(WARN_DEPRECATED) && len == 1 && sv_type == SVt_PV) |
cea2e8a9 | 873 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of $%s is deprecated", name); |
a0d0e21e LW |
874 | /* FALL THROUGH */ |
875 | case '[': | |
93a17b20 LW |
876 | case '^': |
877 | case '~': | |
878 | case '=': | |
93a17b20 LW |
879 | case '%': |
880 | case '.': | |
93a17b20 LW |
881 | case '(': |
882 | case ')': | |
883 | case '<': | |
884 | case '>': | |
885 | case ',': | |
886 | case '\\': | |
887 | case '/': | |
16070b82 GS |
888 | case '\001': /* $^A */ |
889 | case '\003': /* $^C */ | |
890 | case '\004': /* $^D */ | |
16070b82 GS |
891 | case '\006': /* $^F */ |
892 | case '\010': /* $^H */ | |
893 | case '\011': /* $^I, NOT \t in EBCDIC */ | |
a01268b5 | 894 | case '\016': /* $^N */ |
16070b82 | 895 | case '\020': /* $^P */ |
463ee0b2 LW |
896 | if (len > 1) |
897 | break; | |
898 | goto magicalize; | |
d8ce0c9a BH |
899 | case '|': |
900 | if (len > 1) | |
901 | break; | |
902 | sv_setiv(GvSV(gv), (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0); | |
903 | goto magicalize; | |
0a378802 JH |
904 | case '\005': /* $^E && $^ENCODING */ |
905 | if (len > 1 && strNE(name, "\005NCODING")) | |
906 | break; | |
907 | goto magicalize; | |
908 | ||
ac27b0f5 NIS |
909 | case '\017': /* $^O & $^OPEN */ |
910 | if (len > 1 && strNE(name, "\017PEN")) | |
911 | break; | |
912 | goto magicalize; | |
16070b82 | 913 | case '\023': /* $^S */ |
6cef1e77 IZ |
914 | if (len > 1) |
915 | break; | |
916 | goto ro_magicalize; | |
eb27b65e | 917 | case '\024': /* $^T, ${^TAINT} */ |
7c36658b MS |
918 | if (len == 1) |
919 | goto magicalize; | |
920 | else if (strEQ(name, "\024AINT")) | |
921 | goto ro_magicalize; | |
922 | else | |
923 | break; | |
6a818117 | 924 | case '\027': /* $^W & $^WARNING_BITS */ |
a50e31ad GS |
925 | if (len > 1 && strNE(name, "\027ARNING_BITS") |
926 | && strNE(name, "\027IDE_SYSTEM_CALLS")) | |
4438c4b7 JH |
927 | break; |
928 | goto magicalize; | |
463ee0b2 | 929 | |
a0d0e21e | 930 | case '+': |
6cef1e77 IZ |
931 | if (len > 1) |
932 | break; | |
933 | else { | |
934 | AV* av = GvAVn(gv); | |
14befaf4 | 935 | sv_magic((SV*)av, (SV*)av, PERL_MAGIC_regdata, Nullch, 0); |
03a27ae7 | 936 | SvREADONLY_on(av); |
6cef1e77 IZ |
937 | } |
938 | /* FALL THROUGH */ | |
463ee0b2 LW |
939 | case '1': |
940 | case '2': | |
941 | case '3': | |
942 | case '4': | |
943 | case '5': | |
944 | case '6': | |
945 | case '7': | |
946 | case '8': | |
947 | case '9': | |
e521374c JP |
948 | /* ensures variable is only digits */ |
949 | /* ${"1foo"} fails this test (and is thus writeable) */ | |
950 | /* added by japhy, but borrowed from is_gv_magical */ | |
951 | ||
952 | if (len > 1) { | |
953 | const char *end = name + len; | |
954 | while (--end > name) { | |
955 | if (!isDIGIT(*end)) return gv; | |
956 | } | |
957 | } | |
958 | ||
a0d0e21e LW |
959 | ro_magicalize: |
960 | SvREADONLY_on(GvSV(gv)); | |
93a17b20 | 961 | magicalize: |
14befaf4 | 962 | sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, len); |
93a17b20 LW |
963 | break; |
964 | ||
16070b82 | 965 | case '\014': /* $^L */ |
463ee0b2 LW |
966 | if (len > 1) |
967 | break; | |
93a17b20 | 968 | sv_setpv(GvSV(gv),"\f"); |
3280af22 | 969 | PL_formfeed = GvSV(gv); |
93a17b20 LW |
970 | break; |
971 | case ';': | |
463ee0b2 LW |
972 | if (len > 1) |
973 | break; | |
93a17b20 LW |
974 | sv_setpv(GvSV(gv),"\034"); |
975 | break; | |
463ee0b2 LW |
976 | case ']': |
977 | if (len == 1) { | |
f86702cc | 978 | SV *sv = GvSV(gv); |
5089c844 | 979 | (void)SvUPGRADE(sv, SVt_PVNV); |
6a6ba966 SB |
980 | Perl_sv_setpvf(aTHX_ sv, |
981 | #if defined(PERL_SUBVERSION) && (PERL_SUBVERSION > 0) | |
982 | "%8.6" | |
983 | #else | |
984 | "%5.3" | |
985 | #endif | |
986 | NVff, | |
987 | SvNVX(PL_patchlevel)); | |
5089c844 GS |
988 | SvNVX(sv) = SvNVX(PL_patchlevel); |
989 | SvNOK_on(sv); | |
5089c844 | 990 | SvREADONLY_on(sv); |
93a17b20 LW |
991 | } |
992 | break; | |
16070b82 GS |
993 | case '\026': /* $^V */ |
994 | if (len == 1) { | |
995 | SV *sv = GvSV(gv); | |
996 | GvSV(gv) = SvREFCNT_inc(PL_patchlevel); | |
997 | SvREFCNT_dec(sv); | |
998 | } | |
999 | break; | |
79072805 | 1000 | } |
93a17b20 | 1001 | return gv; |
79072805 LW |
1002 | } |
1003 | ||
1004 | void | |
43693395 GS |
1005 | Perl_gv_fullname4(pTHX_ SV *sv, GV *gv, const char *prefix, bool keepmain) |
1006 | { | |
1007 | HV *hv = GvSTASH(gv); | |
1008 | if (!hv) { | |
1009 | (void)SvOK_off(sv); | |
1010 | return; | |
1011 | } | |
1012 | sv_setpv(sv, prefix ? prefix : ""); | |
1013 | if (keepmain || strNE(HvNAME(hv), "main")) { | |
1014 | sv_catpv(sv,HvNAME(hv)); | |
1015 | sv_catpvn(sv,"::", 2); | |
1016 | } | |
1017 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); | |
1018 | } | |
1019 | ||
1020 | void | |
864dbfa3 | 1021 | Perl_gv_fullname3(pTHX_ SV *sv, GV *gv, const char *prefix) |
79072805 LW |
1022 | { |
1023 | HV *hv = GvSTASH(gv); | |
f967eb5f | 1024 | if (!hv) { |
155aba94 | 1025 | (void)SvOK_off(sv); |
79072805 | 1026 | return; |
f967eb5f | 1027 | } |
1028 | sv_setpv(sv, prefix ? prefix : ""); | |
79072805 | 1029 | sv_catpv(sv,HvNAME(hv)); |
463ee0b2 | 1030 | sv_catpvn(sv,"::", 2); |
79072805 LW |
1031 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); |
1032 | } | |
1033 | ||
1034 | void | |
43693395 GS |
1035 | Perl_gv_efullname4(pTHX_ SV *sv, GV *gv, const char *prefix, bool keepmain) |
1036 | { | |
1037 | GV *egv = GvEGV(gv); | |
1038 | if (!egv) | |
1039 | egv = gv; | |
1040 | gv_fullname4(sv, egv, prefix, keepmain); | |
1041 | } | |
1042 | ||
1043 | void | |
864dbfa3 | 1044 | Perl_gv_efullname3(pTHX_ SV *sv, GV *gv, const char *prefix) |
79072805 | 1045 | { |
f967eb5f | 1046 | GV *egv = GvEGV(gv); |
748a9306 LW |
1047 | if (!egv) |
1048 | egv = gv; | |
f6aff53a | 1049 | gv_fullname3(sv, egv, prefix); |
1050 | } | |
1051 | ||
1052 | /* XXX compatibility with versions <= 5.003. */ | |
1053 | void | |
864dbfa3 | 1054 | Perl_gv_fullname(pTHX_ SV *sv, GV *gv) |
f6aff53a | 1055 | { |
1056 | gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
1057 | } | |
1058 | ||
1059 | /* XXX compatibility with versions <= 5.003. */ | |
1060 | void | |
864dbfa3 | 1061 | Perl_gv_efullname(pTHX_ SV *sv, GV *gv) |
f6aff53a | 1062 | { |
1063 | gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
79072805 LW |
1064 | } |
1065 | ||
1066 | IO * | |
864dbfa3 | 1067 | Perl_newIO(pTHX) |
79072805 LW |
1068 | { |
1069 | IO *io; | |
8990e307 LW |
1070 | GV *iogv; |
1071 | ||
1072 | io = (IO*)NEWSV(0,0); | |
a0d0e21e | 1073 | sv_upgrade((SV *)io,SVt_PVIO); |
8990e307 LW |
1074 | SvREFCNT(io) = 1; |
1075 | SvOBJECT_on(io); | |
c9de509e | 1076 | iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV); |
5f2d631d GS |
1077 | /* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */ |
1078 | if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv)))) | |
c9de509e | 1079 | iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV); |
8990e307 | 1080 | SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv)); |
79072805 LW |
1081 | return io; |
1082 | } | |
1083 | ||
1084 | void | |
864dbfa3 | 1085 | Perl_gv_check(pTHX_ HV *stash) |
79072805 LW |
1086 | { |
1087 | register HE *entry; | |
1088 | register I32 i; | |
1089 | register GV *gv; | |
463ee0b2 LW |
1090 | HV *hv; |
1091 | ||
8990e307 LW |
1092 | if (!HvARRAY(stash)) |
1093 | return; | |
a0d0e21e | 1094 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
dc437b57 | 1095 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
1096 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && | |
6676db26 | 1097 | (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv))) |
a0d0e21e | 1098 | { |
19b6c847 | 1099 | if (hv != PL_defstash && hv != stash) |
a0d0e21e LW |
1100 | gv_check(hv); /* nested package */ |
1101 | } | |
dc437b57 | 1102 | else if (isALPHA(*HeKEY(entry))) { |
1d7c1841 | 1103 | char *file; |
dc437b57 | 1104 | gv = (GV*)HeVAL(entry); |
55d729e4 | 1105 | if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv)) |
463ee0b2 | 1106 | continue; |
1d7c1841 GS |
1107 | file = GvFILE(gv); |
1108 | /* performance hack: if filename is absolute and it's a standard | |
1109 | * module, don't bother warning */ | |
1110 | if (file | |
1111 | && PERL_FILE_IS_ABSOLUTE(file) | |
6eb630b7 CN |
1112 | #ifdef MACOS_TRADITIONAL |
1113 | && (instr(file, ":lib:") | |
1114 | #else | |
1115 | && (instr(file, "/lib/") | |
1116 | #endif | |
1117 | || instr(file, ".pm"))) | |
1d7c1841 | 1118 | { |
8990e307 | 1119 | continue; |
1d7c1841 GS |
1120 | } |
1121 | CopLINE_set(PL_curcop, GvLINE(gv)); | |
1122 | #ifdef USE_ITHREADS | |
1123 | CopFILE(PL_curcop) = file; /* set for warning */ | |
1124 | #else | |
1125 | CopFILEGV(PL_curcop) = gv_fetchfile(file); | |
1126 | #endif | |
cea2e8a9 | 1127 | Perl_warner(aTHX_ WARN_ONCE, |
599cee73 | 1128 | "Name \"%s::%s\" used only once: possible typo", |
a0d0e21e | 1129 | HvNAME(stash), GvNAME(gv)); |
463ee0b2 | 1130 | } |
79072805 LW |
1131 | } |
1132 | } | |
1133 | } | |
1134 | ||
1135 | GV * | |
864dbfa3 | 1136 | Perl_newGVgen(pTHX_ char *pack) |
79072805 | 1137 | { |
cea2e8a9 | 1138 | return gv_fetchpv(Perl_form(aTHX_ "%s::_GEN_%ld", pack, (long)PL_gensym++), |
46fc3d4c | 1139 | TRUE, SVt_PVGV); |
79072805 LW |
1140 | } |
1141 | ||
1142 | /* hopefully this is only called on local symbol table entries */ | |
1143 | ||
1144 | GP* | |
864dbfa3 | 1145 | Perl_gp_ref(pTHX_ GP *gp) |
79072805 | 1146 | { |
1d7c1841 GS |
1147 | if (!gp) |
1148 | return (GP*)NULL; | |
79072805 | 1149 | gp->gp_refcnt++; |
44a8e56a | 1150 | if (gp->gp_cv) { |
1151 | if (gp->gp_cvgen) { | |
1152 | /* multi-named GPs cannot be used for method cache */ | |
1153 | SvREFCNT_dec(gp->gp_cv); | |
1154 | gp->gp_cv = Nullcv; | |
1155 | gp->gp_cvgen = 0; | |
1156 | } | |
1157 | else { | |
1158 | /* Adding a new name to a subroutine invalidates method cache */ | |
3280af22 | 1159 | PL_sub_generation++; |
44a8e56a | 1160 | } |
1161 | } | |
79072805 | 1162 | return gp; |
79072805 LW |
1163 | } |
1164 | ||
1165 | void | |
864dbfa3 | 1166 | Perl_gp_free(pTHX_ GV *gv) |
79072805 | 1167 | { |
79072805 LW |
1168 | GP* gp; |
1169 | ||
1170 | if (!gv || !(gp = GvGP(gv))) | |
1171 | return; | |
f248d071 GS |
1172 | if (gp->gp_refcnt == 0) { |
1173 | if (ckWARN_d(WARN_INTERNAL)) | |
1174 | Perl_warner(aTHX_ WARN_INTERNAL, | |
1175 | "Attempt to free unreferenced glob pointers"); | |
79072805 LW |
1176 | return; |
1177 | } | |
44a8e56a | 1178 | if (gp->gp_cv) { |
1179 | /* Deleting the name of a subroutine invalidates method cache */ | |
3280af22 | 1180 | PL_sub_generation++; |
44a8e56a | 1181 | } |
748a9306 LW |
1182 | if (--gp->gp_refcnt > 0) { |
1183 | if (gp->gp_egv == gv) | |
1184 | gp->gp_egv = 0; | |
79072805 | 1185 | return; |
748a9306 | 1186 | } |
79072805 | 1187 | |
8990e307 LW |
1188 | SvREFCNT_dec(gp->gp_sv); |
1189 | SvREFCNT_dec(gp->gp_av); | |
1190 | SvREFCNT_dec(gp->gp_hv); | |
377b8fbc | 1191 | SvREFCNT_dec(gp->gp_io); |
a6006777 | 1192 | SvREFCNT_dec(gp->gp_cv); |
748a9306 LW |
1193 | SvREFCNT_dec(gp->gp_form); |
1194 | ||
79072805 LW |
1195 | Safefree(gp); |
1196 | GvGP(gv) = 0; | |
1197 | } | |
1198 | ||
1199 | #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286)) | |
1200 | #define MICROPORT | |
1201 | #endif | |
1202 | ||
1203 | #ifdef MICROPORT /* Microport 2.4 hack */ | |
1204 | AV *GvAVn(gv) | |
1205 | register GV *gv; | |
1206 | { | |
b267980d | 1207 | if (GvGP(gv)->gp_av) |
79072805 LW |
1208 | return GvGP(gv)->gp_av; |
1209 | else | |
1210 | return GvGP(gv_AVadd(gv))->gp_av; | |
1211 | } | |
1212 | ||
1213 | HV *GvHVn(gv) | |
1214 | register GV *gv; | |
1215 | { | |
1216 | if (GvGP(gv)->gp_hv) | |
1217 | return GvGP(gv)->gp_hv; | |
1218 | else | |
1219 | return GvGP(gv_HVadd(gv))->gp_hv; | |
1220 | } | |
1221 | #endif /* Microport 2.4 hack */ | |
a0d0e21e | 1222 | |
d460ef45 NIS |
1223 | int |
1224 | Perl_magic_freeovrld(pTHX_ SV *sv, MAGIC *mg) | |
1225 | { | |
1226 | AMT *amtp = (AMT*)mg->mg_ptr; | |
1227 | if (amtp && AMT_AMAGIC(amtp)) { | |
1228 | int i; | |
1229 | for (i = 1; i < NofAMmeth; i++) { | |
1230 | CV *cv = amtp->table[i]; | |
1231 | if (cv != Nullcv) { | |
1232 | SvREFCNT_dec((SV *) cv); | |
1233 | amtp->table[i] = Nullcv; | |
1234 | } | |
1235 | } | |
1236 | } | |
1237 | return 0; | |
1238 | } | |
1239 | ||
a0d0e21e LW |
1240 | /* Updates and caches the CV's */ |
1241 | ||
1242 | bool | |
864dbfa3 | 1243 | Perl_Gv_AMupdate(pTHX_ HV *stash) |
a0d0e21e | 1244 | { |
a0d0e21e LW |
1245 | GV* gv; |
1246 | CV* cv; | |
14befaf4 | 1247 | MAGIC* mg=mg_find((SV*)stash, PERL_MAGIC_overload_table); |
8ac85365 | 1248 | AMT *amtp = (mg) ? (AMT*)mg->mg_ptr: (AMT *) NULL; |
a6006777 | 1249 | AMT amt; |
a0d0e21e | 1250 | |
3280af22 NIS |
1251 | if (mg && amtp->was_ok_am == PL_amagic_generation |
1252 | && amtp->was_ok_sub == PL_sub_generation) | |
32251b26 | 1253 | return AMT_OVERLOADED(amtp); |
14befaf4 | 1254 | sv_unmagic((SV*)stash, PERL_MAGIC_overload_table); |
a0d0e21e | 1255 | |
cea2e8a9 | 1256 | DEBUG_o( Perl_deb(aTHX_ "Recalcing overload magic in package %s\n",HvNAME(stash)) ); |
a0d0e21e | 1257 | |
d460ef45 | 1258 | Zero(&amt,1,AMT); |
3280af22 NIS |
1259 | amt.was_ok_am = PL_amagic_generation; |
1260 | amt.was_ok_sub = PL_sub_generation; | |
a6006777 | 1261 | amt.fallback = AMGfallNO; |
1262 | amt.flags = 0; | |
1263 | ||
a6006777 | 1264 | { |
32251b26 IZ |
1265 | int filled = 0, have_ovl = 0; |
1266 | int i, lim = 1; | |
a6006777 | 1267 | SV* sv = NULL; |
a6006777 | 1268 | |
22c35a8c | 1269 | /* Work with "fallback" key, which we assume to be first in PL_AMG_names */ |
a6006777 | 1270 | |
89ffc314 IZ |
1271 | /* Try to find via inheritance. */ |
1272 | gv = gv_fetchmeth(stash, PL_AMG_names[0], 2, -1); | |
1273 | if (gv) | |
1274 | sv = GvSV(gv); | |
1275 | ||
1276 | if (!gv) | |
32251b26 | 1277 | lim = DESTROY_amg; /* Skip overloading entries. */ |
89ffc314 IZ |
1278 | else if (SvTRUE(sv)) |
1279 | amt.fallback=AMGfallYES; | |
1280 | else if (SvOK(sv)) | |
1281 | amt.fallback=AMGfallNEVER; | |
a6006777 | 1282 | |
32251b26 IZ |
1283 | for (i = 1; i < lim; i++) |
1284 | amt.table[i] = Nullcv; | |
1285 | for (; i < NofAMmeth; i++) { | |
c8ce92fc | 1286 | char *cooky = (char*)PL_AMG_names[i]; |
32251b26 IZ |
1287 | /* Human-readable form, for debugging: */ |
1288 | char *cp = (i >= DESTROY_amg ? cooky : AMG_id2name(i)); | |
89ffc314 IZ |
1289 | STRLEN l = strlen(cooky); |
1290 | ||
cea2e8a9 | 1291 | DEBUG_o( Perl_deb(aTHX_ "Checking overloading of `%s' in package `%.256s'\n", |
44a8e56a | 1292 | cp, HvNAME(stash)) ); |
46fc3d4c | 1293 | /* don't fill the cache while looking up! */ |
89ffc314 | 1294 | gv = gv_fetchmeth(stash, cooky, l, -1); |
46fc3d4c | 1295 | cv = 0; |
89ffc314 | 1296 | if (gv && (cv = GvCV(gv))) { |
44a8e56a | 1297 | if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil") |
1298 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) { | |
1299 | /* GvSV contains the name of the method. */ | |
4ea42e7f | 1300 | GV *ngv = Nullgv; |
44a8e56a | 1301 | |
b267980d | 1302 | DEBUG_o( Perl_deb(aTHX_ "Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n", |
9c5ffd7c | 1303 | SvPV_nolen(GvSV(gv)), cp, HvNAME(stash)) ); |
b267980d | 1304 | if (!SvPOK(GvSV(gv)) |
dc848c6f | 1305 | || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)), |
1306 | FALSE))) | |
1307 | { | |
44a8e56a | 1308 | /* Can be an import stub (created by `can'). */ |
1309 | if (GvCVGEN(gv)) { | |
b267980d | 1310 | Perl_croak(aTHX_ "Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'", |
44a8e56a | 1311 | (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), |
1312 | cp, HvNAME(stash)); | |
1313 | } else | |
b267980d | 1314 | Perl_croak(aTHX_ "Can't resolve method `%.256s' overloading `%s' in package `%.256s'", |
44a8e56a | 1315 | (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), |
1316 | cp, HvNAME(stash)); | |
1317 | } | |
dc848c6f | 1318 | cv = GvCV(gv = ngv); |
44a8e56a | 1319 | } |
cea2e8a9 | 1320 | DEBUG_o( Perl_deb(aTHX_ "Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n", |
44a8e56a | 1321 | cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))), |
1322 | GvNAME(CvGV(cv))) ); | |
1323 | filled = 1; | |
32251b26 IZ |
1324 | if (i < DESTROY_amg) |
1325 | have_ovl = 1; | |
44a8e56a | 1326 | } |
a6006777 | 1327 | amt.table[i]=(CV*)SvREFCNT_inc(cv); |
a0d0e21e | 1328 | } |
a0d0e21e | 1329 | if (filled) { |
a6006777 | 1330 | AMT_AMAGIC_on(&amt); |
32251b26 IZ |
1331 | if (have_ovl) |
1332 | AMT_OVERLOADED_on(&amt); | |
14befaf4 DM |
1333 | sv_magic((SV*)stash, 0, PERL_MAGIC_overload_table, |
1334 | (char*)&amt, sizeof(AMT)); | |
32251b26 | 1335 | return have_ovl; |
a0d0e21e LW |
1336 | } |
1337 | } | |
a6006777 | 1338 | /* Here we have no table: */ |
9cbac4c7 | 1339 | /* no_table: */ |
a6006777 | 1340 | AMT_AMAGIC_off(&amt); |
14befaf4 DM |
1341 | sv_magic((SV*)stash, 0, PERL_MAGIC_overload_table, |
1342 | (char*)&amt, sizeof(AMTS)); | |
a0d0e21e LW |
1343 | return FALSE; |
1344 | } | |
1345 | ||
32251b26 IZ |
1346 | |
1347 | CV* | |
1348 | Perl_gv_handler(pTHX_ HV *stash, I32 id) | |
1349 | { | |
3f8f4626 | 1350 | MAGIC *mg; |
32251b26 IZ |
1351 | AMT *amtp; |
1352 | ||
3f8f4626 DC |
1353 | if (!stash) |
1354 | return Nullcv; | |
14befaf4 | 1355 | mg = mg_find((SV*)stash, PERL_MAGIC_overload_table); |
32251b26 IZ |
1356 | if (!mg) { |
1357 | do_update: | |
1358 | Gv_AMupdate(stash); | |
14befaf4 | 1359 | mg = mg_find((SV*)stash, PERL_MAGIC_overload_table); |
32251b26 IZ |
1360 | } |
1361 | amtp = (AMT*)mg->mg_ptr; | |
1362 | if ( amtp->was_ok_am != PL_amagic_generation | |
1363 | || amtp->was_ok_sub != PL_sub_generation ) | |
1364 | goto do_update; | |
1365 | if (AMT_AMAGIC(amtp)) | |
1366 | return amtp->table[id]; | |
1367 | return Nullcv; | |
1368 | } | |
1369 | ||
1370 | ||
a0d0e21e | 1371 | SV* |
864dbfa3 | 1372 | Perl_amagic_call(pTHX_ SV *left, SV *right, int method, int flags) |
a0d0e21e | 1373 | { |
b267980d | 1374 | MAGIC *mg; |
9c5ffd7c | 1375 | CV *cv=NULL; |
a0d0e21e | 1376 | CV **cvp=NULL, **ocvp=NULL; |
9c5ffd7c | 1377 | AMT *amtp=NULL, *oamtp=NULL; |
497b47a8 | 1378 | int off=0, off1, lr=0, assign=AMGf_assign & flags, notfound=0; |
ee239bfe | 1379 | int postpr = 0, force_cpy = 0, assignshift = assign ? 1 : 0; |
497b47a8 JH |
1380 | #ifdef DEBUGGING |
1381 | int fl=0; | |
497b47a8 | 1382 | #endif |
25716404 | 1383 | HV* stash=NULL; |
a0d0e21e | 1384 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) |
25716404 GS |
1385 | && (stash = SvSTASH(SvRV(left))) |
1386 | && (mg = mg_find((SV*)stash, PERL_MAGIC_overload_table)) | |
b267980d | 1387 | && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
a6006777 | 1388 | ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table |
8ac85365 | 1389 | : (CV **) NULL)) |
b267980d | 1390 | && ((cv = cvp[off=method+assignshift]) |
748a9306 LW |
1391 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to |
1392 | * usual method */ | |
497b47a8 JH |
1393 | ( |
1394 | #ifdef DEBUGGING | |
1395 | fl = 1, | |
1396 | #endif | |
1397 | cv = cvp[off=method])))) { | |
a0d0e21e LW |
1398 | lr = -1; /* Call method for left argument */ |
1399 | } else { | |
1400 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { | |
1401 | int logic; | |
1402 | ||
1403 | /* look for substituted methods */ | |
ee239bfe | 1404 | /* In all the covered cases we should be called with assign==0. */ |
a0d0e21e LW |
1405 | switch (method) { |
1406 | case inc_amg: | |
ee239bfe IZ |
1407 | force_cpy = 1; |
1408 | if ((cv = cvp[off=add_ass_amg]) | |
1409 | || ((cv = cvp[off = add_amg]) && (force_cpy = 0, postpr = 1))) { | |
3280af22 | 1410 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1411 | } |
1412 | break; | |
1413 | case dec_amg: | |
ee239bfe IZ |
1414 | force_cpy = 1; |
1415 | if ((cv = cvp[off = subtr_ass_amg]) | |
1416 | || ((cv = cvp[off = subtr_amg]) && (force_cpy = 0, postpr=1))) { | |
3280af22 | 1417 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1418 | } |
1419 | break; | |
1420 | case bool__amg: | |
1421 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); | |
1422 | break; | |
1423 | case numer_amg: | |
1424 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); | |
1425 | break; | |
1426 | case string_amg: | |
1427 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); | |
1428 | break; | |
dc437b57 | 1429 | case not_amg: |
b267980d | 1430 | (void)((cv = cvp[off=bool__amg]) |
dc437b57 | 1431 | || (cv = cvp[off=numer_amg]) |
1432 | || (cv = cvp[off=string_amg])); | |
1433 | postpr = 1; | |
1434 | break; | |
748a9306 LW |
1435 | case copy_amg: |
1436 | { | |
76e3520e GS |
1437 | /* |
1438 | * SV* ref causes confusion with the interpreter variable of | |
1439 | * the same name | |
1440 | */ | |
1441 | SV* tmpRef=SvRV(left); | |
1442 | if (!SvROK(tmpRef) && SvTYPE(tmpRef) <= SVt_PVMG) { | |
fc36a67e | 1443 | /* |
1444 | * Just to be extra cautious. Maybe in some | |
1445 | * additional cases sv_setsv is safe, too. | |
1446 | */ | |
76e3520e | 1447 | SV* newref = newSVsv(tmpRef); |
748a9306 | 1448 | SvOBJECT_on(newref); |
76e3520e | 1449 | SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(tmpRef)); |
748a9306 LW |
1450 | return newref; |
1451 | } | |
1452 | } | |
1453 | break; | |
a0d0e21e | 1454 | case abs_amg: |
b267980d | 1455 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e | 1456 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
748a9306 | 1457 | SV* nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e | 1458 | if (off1==lt_amg) { |
748a9306 | 1459 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1460 | lt_amg,AMGf_noright); |
1461 | logic = SvTRUE(lessp); | |
1462 | } else { | |
748a9306 | 1463 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1464 | ncmp_amg,AMGf_noright); |
1465 | logic = (SvNV(lessp) < 0); | |
1466 | } | |
1467 | if (logic) { | |
1468 | if (off==subtr_amg) { | |
1469 | right = left; | |
748a9306 | 1470 | left = nullsv; |
a0d0e21e LW |
1471 | lr = 1; |
1472 | } | |
1473 | } else { | |
1474 | return left; | |
1475 | } | |
1476 | } | |
1477 | break; | |
1478 | case neg_amg: | |
155aba94 | 1479 | if ((cv = cvp[off=subtr_amg])) { |
a0d0e21e LW |
1480 | right = left; |
1481 | left = sv_2mortal(newSViv(0)); | |
1482 | lr = 1; | |
1483 | } | |
1484 | break; | |
f216259d | 1485 | case int_amg: |
f5284f61 | 1486 | case iter_amg: /* XXXX Eventually should do to_gv. */ |
b267980d NIS |
1487 | /* FAIL safe */ |
1488 | return NULL; /* Delegate operation to standard mechanisms. */ | |
1489 | break; | |
f5284f61 IZ |
1490 | case to_sv_amg: |
1491 | case to_av_amg: | |
1492 | case to_hv_amg: | |
1493 | case to_gv_amg: | |
1494 | case to_cv_amg: | |
1495 | /* FAIL safe */ | |
b267980d | 1496 | return left; /* Delegate operation to standard mechanisms. */ |
f5284f61 | 1497 | break; |
a0d0e21e LW |
1498 | default: |
1499 | goto not_found; | |
1500 | } | |
1501 | if (!cv) goto not_found; | |
1502 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) | |
25716404 GS |
1503 | && (stash = SvSTASH(SvRV(right))) |
1504 | && (mg = mg_find((SV*)stash, PERL_MAGIC_overload_table)) | |
b267980d | 1505 | && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
a6006777 | 1506 | ? (amtp = (AMT*)mg->mg_ptr)->table |
8ac85365 | 1507 | : (CV **) NULL)) |
a0d0e21e LW |
1508 | && (cv = cvp[off=method])) { /* Method for right |
1509 | * argument found */ | |
1510 | lr=1; | |
b267980d NIS |
1511 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
1512 | && (cvp=ocvp) && (lr = -1)) | |
a0d0e21e LW |
1513 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
1514 | && !(flags & AMGf_unary)) { | |
1515 | /* We look for substitution for | |
1516 | * comparison operations and | |
fc36a67e | 1517 | * concatenation */ |
a0d0e21e LW |
1518 | if (method==concat_amg || method==concat_ass_amg |
1519 | || method==repeat_amg || method==repeat_ass_amg) { | |
1520 | return NULL; /* Delegate operation to string conversion */ | |
1521 | } | |
1522 | off = -1; | |
1523 | switch (method) { | |
1524 | case lt_amg: | |
1525 | case le_amg: | |
1526 | case gt_amg: | |
1527 | case ge_amg: | |
1528 | case eq_amg: | |
1529 | case ne_amg: | |
1530 | postpr = 1; off=ncmp_amg; break; | |
1531 | case slt_amg: | |
1532 | case sle_amg: | |
1533 | case sgt_amg: | |
1534 | case sge_amg: | |
1535 | case seq_amg: | |
1536 | case sne_amg: | |
1537 | postpr = 1; off=scmp_amg; break; | |
1538 | } | |
1539 | if (off != -1) cv = cvp[off]; | |
1540 | if (!cv) { | |
1541 | goto not_found; | |
1542 | } | |
1543 | } else { | |
a6006777 | 1544 | not_found: /* No method found, either report or croak */ |
b267980d NIS |
1545 | switch (method) { |
1546 | case to_sv_amg: | |
1547 | case to_av_amg: | |
1548 | case to_hv_amg: | |
1549 | case to_gv_amg: | |
1550 | case to_cv_amg: | |
1551 | /* FAIL safe */ | |
1552 | return left; /* Delegate operation to standard mechanisms. */ | |
1553 | break; | |
1554 | } | |
a0d0e21e LW |
1555 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
1556 | notfound = 1; lr = -1; | |
1557 | } else if (cvp && (cv=cvp[nomethod_amg])) { | |
1558 | notfound = 1; lr = 1; | |
1559 | } else { | |
46fc3d4c | 1560 | SV *msg; |
774d564b | 1561 | if (off==-1) off=method; |
b267980d | 1562 | msg = sv_2mortal(Perl_newSVpvf(aTHX_ |
46fc3d4c | 1563 | "Operation `%s': no method found,%sargument %s%s%s%s", |
89ffc314 | 1564 | AMG_id2name(method + assignshift), |
e7ea3e70 | 1565 | (flags & AMGf_unary ? " " : "\n\tleft "), |
b267980d | 1566 | SvAMAGIC(left)? |
a0d0e21e LW |
1567 | "in overloaded package ": |
1568 | "has no overloaded magic", | |
b267980d | 1569 | SvAMAGIC(left)? |
a0d0e21e LW |
1570 | HvNAME(SvSTASH(SvRV(left))): |
1571 | "", | |
b267980d | 1572 | SvAMAGIC(right)? |
e7ea3e70 | 1573 | ",\n\tright argument in overloaded package ": |
b267980d | 1574 | (flags & AMGf_unary |
e7ea3e70 IZ |
1575 | ? "" |
1576 | : ",\n\tright argument has no overloaded magic"), | |
b267980d | 1577 | SvAMAGIC(right)? |
a0d0e21e | 1578 | HvNAME(SvSTASH(SvRV(right))): |
46fc3d4c | 1579 | "")); |
a0d0e21e | 1580 | if (amtp && amtp->fallback >= AMGfallYES) { |
cea2e8a9 | 1581 | DEBUG_o( Perl_deb(aTHX_ "%s", SvPVX(msg)) ); |
a0d0e21e | 1582 | } else { |
894356b3 | 1583 | Perl_croak(aTHX_ "%"SVf, msg); |
a0d0e21e LW |
1584 | } |
1585 | return NULL; | |
1586 | } | |
ee239bfe | 1587 | force_cpy = force_cpy || assign; |
a0d0e21e LW |
1588 | } |
1589 | } | |
497b47a8 | 1590 | #ifdef DEBUGGING |
a0d0e21e | 1591 | if (!notfound) { |
497b47a8 JH |
1592 | DEBUG_o(Perl_deb(aTHX_ |
1593 | "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n", | |
1594 | AMG_id2name(off), | |
1595 | method+assignshift==off? "" : | |
1596 | " (initially `", | |
1597 | method+assignshift==off? "" : | |
1598 | AMG_id2name(method+assignshift), | |
1599 | method+assignshift==off? "" : "')", | |
1600 | flags & AMGf_unary? "" : | |
1601 | lr==1 ? " for right argument": " for left argument", | |
1602 | flags & AMGf_unary? " for argument" : "", | |
25716404 | 1603 | stash ? HvNAME(stash) : "null", |
497b47a8 | 1604 | fl? ",\n\tassignment variant used": "") ); |
ee239bfe | 1605 | } |
497b47a8 | 1606 | #endif |
748a9306 LW |
1607 | /* Since we use shallow copy during assignment, we need |
1608 | * to dublicate the contents, probably calling user-supplied | |
1609 | * version of copy operator | |
1610 | */ | |
ee239bfe IZ |
1611 | /* We need to copy in following cases: |
1612 | * a) Assignment form was called. | |
1613 | * assignshift==1, assign==T, method + 1 == off | |
1614 | * b) Increment or decrement, called directly. | |
1615 | * assignshift==0, assign==0, method + 0 == off | |
1616 | * c) Increment or decrement, translated to assignment add/subtr. | |
b267980d | 1617 | * assignshift==0, assign==T, |
ee239bfe IZ |
1618 | * force_cpy == T |
1619 | * d) Increment or decrement, translated to nomethod. | |
b267980d | 1620 | * assignshift==0, assign==0, |
ee239bfe IZ |
1621 | * force_cpy == T |
1622 | * e) Assignment form translated to nomethod. | |
1623 | * assignshift==1, assign==T, method + 1 != off | |
1624 | * force_cpy == T | |
1625 | */ | |
1626 | /* off is method, method+assignshift, or a result of opcode substitution. | |
1627 | * In the latter case assignshift==0, so only notfound case is important. | |
1628 | */ | |
1629 | if (( (method + assignshift == off) | |
1630 | && (assign || (method == inc_amg) || (method == dec_amg))) | |
1631 | || force_cpy) | |
1632 | RvDEEPCP(left); | |
a0d0e21e LW |
1633 | { |
1634 | dSP; | |
1635 | BINOP myop; | |
1636 | SV* res; | |
54310121 | 1637 | bool oldcatch = CATCH_GET; |
a0d0e21e | 1638 | |
54310121 | 1639 | CATCH_SET(TRUE); |
a0d0e21e LW |
1640 | Zero(&myop, 1, BINOP); |
1641 | myop.op_last = (OP *) &myop; | |
1642 | myop.op_next = Nullop; | |
54310121 | 1643 | myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED; |
a0d0e21e | 1644 | |
e788e7d3 | 1645 | PUSHSTACKi(PERLSI_OVERLOAD); |
a0d0e21e | 1646 | ENTER; |
462e5cf6 | 1647 | SAVEOP(); |
533c011a | 1648 | PL_op = (OP *) &myop; |
3280af22 | 1649 | if (PERLDB_SUB && PL_curstash != PL_debstash) |
533c011a | 1650 | PL_op->op_private |= OPpENTERSUB_DB; |
a0d0e21e | 1651 | PUTBACK; |
cea2e8a9 | 1652 | pp_pushmark(); |
a0d0e21e | 1653 | |
924508f0 | 1654 | EXTEND(SP, notfound + 5); |
a0d0e21e LW |
1655 | PUSHs(lr>0? right: left); |
1656 | PUSHs(lr>0? left: right); | |
3280af22 | 1657 | PUSHs( lr > 0 ? &PL_sv_yes : ( assign ? &PL_sv_undef : &PL_sv_no )); |
a0d0e21e | 1658 | if (notfound) { |
89ffc314 | 1659 | PUSHs( sv_2mortal(newSVpv(AMG_id2name(method + assignshift),0))); |
a0d0e21e LW |
1660 | } |
1661 | PUSHs((SV*)cv); | |
1662 | PUTBACK; | |
1663 | ||
155aba94 | 1664 | if ((PL_op = Perl_pp_entersub(aTHX))) |
cea2e8a9 | 1665 | CALLRUNOPS(aTHX); |
a0d0e21e LW |
1666 | LEAVE; |
1667 | SPAGAIN; | |
1668 | ||
1669 | res=POPs; | |
ebafeae7 | 1670 | PUTBACK; |
d3acc0f7 | 1671 | POPSTACK; |
54310121 | 1672 | CATCH_SET(oldcatch); |
a0d0e21e | 1673 | |
a0d0e21e | 1674 | if (postpr) { |
9c5ffd7c | 1675 | int ans=0; |
a0d0e21e LW |
1676 | switch (method) { |
1677 | case le_amg: | |
1678 | case sle_amg: | |
1679 | ans=SvIV(res)<=0; break; | |
1680 | case lt_amg: | |
1681 | case slt_amg: | |
1682 | ans=SvIV(res)<0; break; | |
1683 | case ge_amg: | |
1684 | case sge_amg: | |
1685 | ans=SvIV(res)>=0; break; | |
1686 | case gt_amg: | |
1687 | case sgt_amg: | |
1688 | ans=SvIV(res)>0; break; | |
1689 | case eq_amg: | |
1690 | case seq_amg: | |
1691 | ans=SvIV(res)==0; break; | |
1692 | case ne_amg: | |
1693 | case sne_amg: | |
1694 | ans=SvIV(res)!=0; break; | |
1695 | case inc_amg: | |
1696 | case dec_amg: | |
bbce6d69 | 1697 | SvSetSV(left,res); return left; |
dc437b57 | 1698 | case not_amg: |
fe7ac86a | 1699 | ans=!SvTRUE(res); break; |
a0d0e21e | 1700 | } |
54310121 | 1701 | return boolSV(ans); |
748a9306 LW |
1702 | } else if (method==copy_amg) { |
1703 | if (!SvROK(res)) { | |
cea2e8a9 | 1704 | Perl_croak(aTHX_ "Copy method did not return a reference"); |
748a9306 LW |
1705 | } |
1706 | return SvREFCNT_inc(SvRV(res)); | |
a0d0e21e LW |
1707 | } else { |
1708 | return res; | |
1709 | } | |
1710 | } | |
1711 | } | |
c9d5ac95 GS |
1712 | |
1713 | /* | |
1714 | =for apidoc is_gv_magical | |
1715 | ||
1716 | Returns C<TRUE> if given the name of a magical GV. | |
1717 | ||
1718 | Currently only useful internally when determining if a GV should be | |
1719 | created even in rvalue contexts. | |
1720 | ||
1721 | C<flags> is not used at present but available for future extension to | |
1722 | allow selecting particular classes of magical variable. | |
1723 | ||
1724 | =cut | |
1725 | */ | |
1726 | bool | |
1727 | Perl_is_gv_magical(pTHX_ char *name, STRLEN len, U32 flags) | |
1728 | { | |
1729 | if (!len) | |
1730 | return FALSE; | |
1731 | ||
1732 | switch (*name) { | |
1733 | case 'I': | |
1734 | if (len == 3 && strEQ(name, "ISA")) | |
1735 | goto yes; | |
1736 | break; | |
1737 | case 'O': | |
1738 | if (len == 8 && strEQ(name, "OVERLOAD")) | |
1739 | goto yes; | |
1740 | break; | |
1741 | case 'S': | |
1742 | if (len == 3 && strEQ(name, "SIG")) | |
1743 | goto yes; | |
1744 | break; | |
ac27b0f5 NIS |
1745 | case '\017': /* $^O & $^OPEN */ |
1746 | if (len == 1 | |
1747 | || (len == 4 && strEQ(name, "\027PEN"))) | |
1748 | { | |
1749 | goto yes; | |
1750 | } | |
1751 | break; | |
c9d5ac95 GS |
1752 | case '\027': /* $^W & $^WARNING_BITS */ |
1753 | if (len == 1 | |
1754 | || (len == 12 && strEQ(name, "\027ARNING_BITS")) | |
1755 | || (len == 17 && strEQ(name, "\027IDE_SYSTEM_CALLS"))) | |
1756 | { | |
1757 | goto yes; | |
1758 | } | |
1759 | break; | |
1760 | ||
1761 | case '&': | |
1762 | case '`': | |
1763 | case '\'': | |
1764 | case ':': | |
1765 | case '?': | |
1766 | case '!': | |
1767 | case '-': | |
1768 | case '#': | |
1769 | case '*': | |
1770 | case '[': | |
1771 | case '^': | |
1772 | case '~': | |
1773 | case '=': | |
1774 | case '%': | |
1775 | case '.': | |
1776 | case '(': | |
1777 | case ')': | |
1778 | case '<': | |
1779 | case '>': | |
1780 | case ',': | |
1781 | case '\\': | |
1782 | case '/': | |
1783 | case '|': | |
1784 | case '+': | |
1785 | case ';': | |
1786 | case ']': | |
1787 | case '\001': /* $^A */ | |
1788 | case '\003': /* $^C */ | |
1789 | case '\004': /* $^D */ | |
1790 | case '\005': /* $^E */ | |
1791 | case '\006': /* $^F */ | |
1792 | case '\010': /* $^H */ | |
1793 | case '\011': /* $^I, NOT \t in EBCDIC */ | |
1794 | case '\014': /* $^L */ | |
a01268b5 | 1795 | case '\016': /* $^N */ |
c9d5ac95 GS |
1796 | case '\020': /* $^P */ |
1797 | case '\023': /* $^S */ | |
c9d5ac95 GS |
1798 | case '\026': /* $^V */ |
1799 | if (len == 1) | |
1800 | goto yes; | |
1801 | break; | |
eb27b65e AMS |
1802 | case '\024': /* $^T, ${^TAINT} */ |
1803 | if (len == 1 || strEQ(name, "\024AINT")) | |
1804 | goto yes; | |
1805 | break; | |
c9d5ac95 GS |
1806 | case '1': |
1807 | case '2': | |
1808 | case '3': | |
1809 | case '4': | |
1810 | case '5': | |
1811 | case '6': | |
1812 | case '7': | |
1813 | case '8': | |
1814 | case '9': | |
1815 | if (len > 1) { | |
1816 | char *end = name + len; | |
1817 | while (--end > name) { | |
1818 | if (!isDIGIT(*end)) | |
1819 | return FALSE; | |
1820 | } | |
1821 | } | |
1822 | yes: | |
1823 | return TRUE; | |
1824 | default: | |
1825 | break; | |
1826 | } | |
1827 | return FALSE; | |
1828 | } |