Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* gv.c |
79072805 | 2 | * |
1129b882 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
67fbe0e1 | 4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 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 | |
4ac71550 | 13 | * of your inquisitiveness, I shall spend all the rest of my days in answering |
a0d0e21e LW |
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. | |
4ac71550 TC |
18 | * |
19 | * [p.599 of _The Lord of the Rings_, III/xi: "The PalantÃr"] | |
79072805 LW |
20 | */ |
21 | ||
ccfc67b7 JH |
22 | /* |
23 | =head1 GV Functions | |
166f8a29 DM |
24 | |
25 | A GV is a structure which corresponds to to a Perl typeglob, ie *foo. | |
26 | It is a structure that holds a pointer to a scalar, an array, a hash etc, | |
27 | corresponding to $foo, @foo, %foo. | |
28 | ||
29 | GVs are usually found as values in stashes (symbol table hashes) where | |
30 | Perl stores its global variables. | |
31 | ||
32 | =cut | |
ccfc67b7 JH |
33 | */ |
34 | ||
79072805 | 35 | #include "EXTERN.h" |
864dbfa3 | 36 | #define PERL_IN_GV_C |
79072805 | 37 | #include "perl.h" |
8261f8eb | 38 | #include "overload.c" |
79072805 | 39 | |
f54cb97a AL |
40 | static const char S_autoload[] = "AUTOLOAD"; |
41 | static const STRLEN S_autolen = sizeof(S_autoload)-1; | |
5c7983e5 | 42 | |
c69033f2 NC |
43 | |
44 | #ifdef PERL_DONT_CREATE_GVSV | |
45 | GV * | |
46 | Perl_gv_SVadd(pTHX_ GV *gv) | |
47 | { | |
7918f24d NC |
48 | PERL_ARGS_ASSERT_GV_SVADD; |
49 | ||
ad64d0ec | 50 | if (!gv || SvTYPE((const SV *)gv) != SVt_PVGV) |
c69033f2 NC |
51 | Perl_croak(aTHX_ "Bad symbol for scalar"); |
52 | if (!GvSV(gv)) | |
561b68a9 | 53 | GvSV(gv) = newSV(0); |
c69033f2 NC |
54 | return gv; |
55 | } | |
56 | #endif | |
57 | ||
79072805 | 58 | GV * |
864dbfa3 | 59 | Perl_gv_AVadd(pTHX_ register GV *gv) |
79072805 | 60 | { |
7918f24d NC |
61 | PERL_ARGS_ASSERT_GV_AVADD; |
62 | ||
ad64d0ec | 63 | if (!gv || SvTYPE((const SV *)gv) != SVt_PVGV) |
cea2e8a9 | 64 | Perl_croak(aTHX_ "Bad symbol for array"); |
79072805 LW |
65 | if (!GvAV(gv)) |
66 | GvAV(gv) = newAV(); | |
67 | return gv; | |
68 | } | |
69 | ||
70 | GV * | |
864dbfa3 | 71 | Perl_gv_HVadd(pTHX_ register GV *gv) |
79072805 | 72 | { |
7918f24d NC |
73 | PERL_ARGS_ASSERT_GV_HVADD; |
74 | ||
ad64d0ec | 75 | if (!gv || SvTYPE((const SV *)gv) != SVt_PVGV) |
cea2e8a9 | 76 | Perl_croak(aTHX_ "Bad symbol for hash"); |
79072805 | 77 | if (!GvHV(gv)) |
463ee0b2 | 78 | GvHV(gv) = newHV(); |
79072805 LW |
79 | return gv; |
80 | } | |
81 | ||
82 | GV * | |
864dbfa3 | 83 | Perl_gv_IOadd(pTHX_ register GV *gv) |
a0d0e21e | 84 | { |
97aff369 | 85 | dVAR; |
7918f24d NC |
86 | |
87 | PERL_ARGS_ASSERT_GV_IOADD; | |
88 | ||
ad64d0ec | 89 | if (!gv || SvTYPE((const SV *)gv) != SVt_PVGV) { |
8b5be85c SP |
90 | |
91 | /* | |
92 | * if it walks like a dirhandle, then let's assume that | |
93 | * this is a dirhandle. | |
94 | */ | |
b37c2d43 | 95 | const char * const fh = |
666ea192 JH |
96 | PL_op->op_type == OP_READDIR || |
97 | PL_op->op_type == OP_TELLDIR || | |
98 | PL_op->op_type == OP_SEEKDIR || | |
99 | PL_op->op_type == OP_REWINDDIR || | |
100 | PL_op->op_type == OP_CLOSEDIR ? | |
101 | "dirhandle" : "filehandle"; | |
8b5be85c SP |
102 | Perl_croak(aTHX_ "Bad symbol for %s", fh); |
103 | } | |
104 | ||
5bd07a3d | 105 | if (!GvIOp(gv)) { |
7fb37951 AMS |
106 | #ifdef GV_UNIQUE_CHECK |
107 | if (GvUNIQUE(gv)) { | |
108 | Perl_croak(aTHX_ "Bad symbol for filehandle (GV is unique)"); | |
5bd07a3d DM |
109 | } |
110 | #endif | |
a0d0e21e | 111 | GvIOp(gv) = newIO(); |
5bd07a3d | 112 | } |
a0d0e21e LW |
113 | return gv; |
114 | } | |
115 | ||
116 | GV * | |
864dbfa3 | 117 | Perl_gv_fetchfile(pTHX_ const char *name) |
79072805 | 118 | { |
7918f24d | 119 | PERL_ARGS_ASSERT_GV_FETCHFILE; |
d9095cec NC |
120 | return gv_fetchfile_flags(name, strlen(name), 0); |
121 | } | |
122 | ||
123 | GV * | |
124 | Perl_gv_fetchfile_flags(pTHX_ const char *const name, const STRLEN namelen, | |
125 | const U32 flags) | |
126 | { | |
97aff369 | 127 | dVAR; |
4116122e | 128 | char smallbuf[128]; |
53d95988 | 129 | char *tmpbuf; |
d9095cec | 130 | const STRLEN tmplen = namelen + 2; |
79072805 LW |
131 | GV *gv; |
132 | ||
7918f24d | 133 | PERL_ARGS_ASSERT_GV_FETCHFILE_FLAGS; |
d9095cec NC |
134 | PERL_UNUSED_ARG(flags); |
135 | ||
1d7c1841 | 136 | if (!PL_defstash) |
a0714e2c | 137 | return NULL; |
1d7c1841 | 138 | |
d9095cec | 139 | if (tmplen <= sizeof smallbuf) |
53d95988 CS |
140 | tmpbuf = smallbuf; |
141 | else | |
798b63bc | 142 | Newx(tmpbuf, tmplen, char); |
0ac0412a | 143 | /* This is where the debugger's %{"::_<$filename"} hash is created */ |
53d95988 CS |
144 | tmpbuf[0] = '_'; |
145 | tmpbuf[1] = '<'; | |
d9095cec NC |
146 | memcpy(tmpbuf + 2, name, namelen); |
147 | gv = *(GV**)hv_fetch(PL_defstash, tmpbuf, tmplen, TRUE); | |
1d7c1841 | 148 | if (!isGV(gv)) { |
d9095cec | 149 | gv_init(gv, PL_defstash, tmpbuf, tmplen, FALSE); |
c69033f2 | 150 | #ifdef PERL_DONT_CREATE_GVSV |
d9095cec | 151 | GvSV(gv) = newSVpvn(name, namelen); |
c69033f2 | 152 | #else |
d9095cec | 153 | sv_setpvn(GvSV(gv), name, namelen); |
c69033f2 | 154 | #endif |
65269a95 | 155 | if (PERLDB_LINE || PERLDB_SAVESRC) |
a0714e2c | 156 | hv_magic(GvHVn(gv_AVadd(gv)), NULL, PERL_MAGIC_dbfile); |
1d7c1841 | 157 | } |
53d95988 CS |
158 | if (tmpbuf != smallbuf) |
159 | Safefree(tmpbuf); | |
79072805 LW |
160 | return gv; |
161 | } | |
162 | ||
62d55b22 NC |
163 | /* |
164 | =for apidoc gv_const_sv | |
165 | ||
166 | If C<gv> is a typeglob whose subroutine entry is a constant sub eligible for | |
167 | inlining, or C<gv> is a placeholder reference that would be promoted to such | |
168 | a typeglob, then returns the value returned by the sub. Otherwise, returns | |
169 | NULL. | |
170 | ||
171 | =cut | |
172 | */ | |
173 | ||
174 | SV * | |
175 | Perl_gv_const_sv(pTHX_ GV *gv) | |
176 | { | |
7918f24d NC |
177 | PERL_ARGS_ASSERT_GV_CONST_SV; |
178 | ||
62d55b22 NC |
179 | if (SvTYPE(gv) == SVt_PVGV) |
180 | return cv_const_sv(GvCVu(gv)); | |
181 | return SvROK(gv) ? SvRV(gv) : NULL; | |
182 | } | |
183 | ||
12816592 NC |
184 | GP * |
185 | Perl_newGP(pTHX_ GV *const gv) | |
186 | { | |
187 | GP *gp; | |
19bad673 NC |
188 | U32 hash; |
189 | #ifdef USE_ITHREADS | |
1df5f7c1 NC |
190 | const char *const file |
191 | = (PL_curcop && CopFILE(PL_curcop)) ? CopFILE(PL_curcop) : ""; | |
19bad673 NC |
192 | const STRLEN len = strlen(file); |
193 | #else | |
194 | SV *const temp_sv = CopFILESV(PL_curcop); | |
195 | const char *file; | |
196 | STRLEN len; | |
197 | ||
7918f24d NC |
198 | PERL_ARGS_ASSERT_NEWGP; |
199 | ||
19bad673 NC |
200 | if (temp_sv) { |
201 | file = SvPVX(temp_sv); | |
202 | len = SvCUR(temp_sv); | |
203 | } else { | |
204 | file = ""; | |
205 | len = 0; | |
206 | } | |
207 | #endif | |
f4890806 NC |
208 | |
209 | PERL_HASH(hash, file, len); | |
210 | ||
12816592 NC |
211 | Newxz(gp, 1, GP); |
212 | ||
213 | #ifndef PERL_DONT_CREATE_GVSV | |
b5c2dcb8 | 214 | gp->gp_sv = newSV(0); |
12816592 NC |
215 | #endif |
216 | ||
1df5f7c1 | 217 | gp->gp_line = PL_curcop ? CopLINE(PL_curcop) : 0; |
12816592 NC |
218 | /* XXX Ideally this cast would be replaced with a change to const char* |
219 | in the struct. */ | |
f4890806 | 220 | gp->gp_file_hek = share_hek(file, len, hash); |
12816592 NC |
221 | gp->gp_egv = gv; |
222 | gp->gp_refcnt = 1; | |
223 | ||
224 | return gp; | |
225 | } | |
226 | ||
463ee0b2 | 227 | void |
864dbfa3 | 228 | Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi) |
463ee0b2 | 229 | { |
27da23d5 | 230 | dVAR; |
3b6733bf NC |
231 | const U32 old_type = SvTYPE(gv); |
232 | const bool doproto = old_type > SVt_NULL; | |
024963f8 | 233 | char * const proto = (doproto && SvPOK(gv)) ? SvPVX(gv) : NULL; |
49a54bbe | 234 | const STRLEN protolen = proto ? SvCUR(gv) : 0; |
756cb477 | 235 | SV *const has_constant = doproto && SvROK(gv) ? SvRV(gv) : NULL; |
1ccdb730 | 236 | const U32 exported_constant = has_constant ? SvPCS_IMPORTED(gv) : 0; |
756cb477 | 237 | |
7918f24d | 238 | PERL_ARGS_ASSERT_GV_INIT; |
756cb477 NC |
239 | assert (!(proto && has_constant)); |
240 | ||
241 | if (has_constant) { | |
5c1f4d79 NC |
242 | /* The constant has to be a simple scalar type. */ |
243 | switch (SvTYPE(has_constant)) { | |
244 | case SVt_PVAV: | |
245 | case SVt_PVHV: | |
246 | case SVt_PVCV: | |
247 | case SVt_PVFM: | |
248 | case SVt_PVIO: | |
249 | Perl_croak(aTHX_ "Cannot convert a reference to %s to typeglob", | |
250 | sv_reftype(has_constant, 0)); | |
42d0e0b7 | 251 | default: NOOP; |
5c1f4d79 | 252 | } |
756cb477 NC |
253 | SvRV_set(gv, NULL); |
254 | SvROK_off(gv); | |
255 | } | |
463ee0b2 | 256 | |
3b6733bf NC |
257 | |
258 | if (old_type < SVt_PVGV) { | |
259 | if (old_type >= SVt_PV) | |
260 | SvCUR_set(gv, 0); | |
ad64d0ec | 261 | sv_upgrade(MUTABLE_SV(gv), SVt_PVGV); |
3b6733bf | 262 | } |
55d729e4 GS |
263 | if (SvLEN(gv)) { |
264 | if (proto) { | |
f880fe2f | 265 | SvPV_set(gv, NULL); |
b162af07 | 266 | SvLEN_set(gv, 0); |
55d729e4 GS |
267 | SvPOK_off(gv); |
268 | } else | |
94010e71 | 269 | Safefree(SvPVX_mutable(gv)); |
55d729e4 | 270 | } |
2e5b91de NC |
271 | SvIOK_off(gv); |
272 | isGV_with_GP_on(gv); | |
12816592 NC |
273 | |
274 | GvGP(gv) = Perl_newGP(aTHX_ gv); | |
e15faf7d NC |
275 | GvSTASH(gv) = stash; |
276 | if (stash) | |
ad64d0ec | 277 | Perl_sv_add_backref(aTHX_ MUTABLE_SV(stash), MUTABLE_SV(gv)); |
ae8cc45f | 278 | gv_name_set(gv, name, len, GV_ADD); |
23ad5bf5 | 279 | if (multi || doproto) /* doproto means it _was_ mentioned */ |
a5f75d66 | 280 | GvMULTI_on(gv); |
55d729e4 GS |
281 | if (doproto) { /* Replicate part of newSUB here. */ |
282 | ENTER; | |
756cb477 NC |
283 | if (has_constant) { |
284 | /* newCONSTSUB takes ownership of the reference from us. */ | |
285 | GvCV(gv) = newCONSTSUB(stash, name, has_constant); | |
1ccdb730 NC |
286 | /* If this reference was a copy of another, then the subroutine |
287 | must have been "imported", by a Perl space assignment to a GV | |
288 | from a reference to CV. */ | |
289 | if (exported_constant) | |
290 | GvIMPORTED_CV_on(gv); | |
756cb477 | 291 | } else { |
756cb477 NC |
292 | (void) start_subparse(0,0); /* Create empty CV in compcv. */ |
293 | GvCV(gv) = PL_compcv; | |
294 | } | |
55d729e4 GS |
295 | LEAVE; |
296 | ||
e1a479c5 | 297 | mro_method_changed_in(GvSTASH(gv)); /* sub Foo::bar($) { (shift) } sub ASDF::baz($); *ASDF::baz = \&Foo::bar */ |
65c50114 | 298 | CvGV(GvCV(gv)) = gv; |
e0d088d0 | 299 | CvFILE_set_from_cop(GvCV(gv), PL_curcop); |
3280af22 | 300 | CvSTASH(GvCV(gv)) = PL_curstash; |
55d729e4 | 301 | if (proto) { |
ad64d0ec | 302 | sv_usepvn_flags(MUTABLE_SV(GvCV(gv)), proto, protolen, |
49a54bbe | 303 | SV_HAS_TRAILING_NUL); |
55d729e4 GS |
304 | } |
305 | } | |
463ee0b2 LW |
306 | } |
307 | ||
76e3520e | 308 | STATIC void |
fe9845cc | 309 | S_gv_init_sv(pTHX_ GV *gv, const svtype sv_type) |
a0d0e21e | 310 | { |
7918f24d NC |
311 | PERL_ARGS_ASSERT_GV_INIT_SV; |
312 | ||
a0d0e21e LW |
313 | switch (sv_type) { |
314 | case SVt_PVIO: | |
315 | (void)GvIOn(gv); | |
316 | break; | |
317 | case SVt_PVAV: | |
318 | (void)GvAVn(gv); | |
319 | break; | |
320 | case SVt_PVHV: | |
321 | (void)GvHVn(gv); | |
322 | break; | |
c69033f2 NC |
323 | #ifdef PERL_DONT_CREATE_GVSV |
324 | case SVt_NULL: | |
325 | case SVt_PVCV: | |
326 | case SVt_PVFM: | |
e654831b | 327 | case SVt_PVGV: |
c69033f2 NC |
328 | break; |
329 | default: | |
dbdce04c NC |
330 | if(GvSVn(gv)) { |
331 | /* Work round what appears to be a bug in Sun C++ 5.8 2005/10/13 | |
332 | If we just cast GvSVn(gv) to void, it ignores evaluating it for | |
333 | its side effect */ | |
334 | } | |
c69033f2 | 335 | #endif |
a0d0e21e LW |
336 | } |
337 | } | |
338 | ||
954c1994 GS |
339 | /* |
340 | =for apidoc gv_fetchmeth | |
341 | ||
342 | Returns the glob with the given C<name> and a defined subroutine or | |
343 | C<NULL>. The glob lives in the given C<stash>, or in the stashes | |
07766739 | 344 | accessible via @ISA and UNIVERSAL::. |
954c1994 GS |
345 | |
346 | The argument C<level> should be either 0 or -1. If C<level==0>, as a | |
347 | side-effect creates a glob with the given C<name> in the given C<stash> | |
348 | which in the case of success contains an alias for the subroutine, and sets | |
e1a479c5 | 349 | up caching info for this glob. |
954c1994 GS |
350 | |
351 | This function grants C<"SUPER"> token as a postfix of the stash name. The | |
352 | GV returned from C<gv_fetchmeth> may be a method cache entry, which is not | |
4929bf7b | 353 | visible to Perl code. So when calling C<call_sv>, you should not use |
954c1994 | 354 | the GV directly; instead, you should use the method's CV, which can be |
b267980d | 355 | obtained from the GV with the C<GvCV> macro. |
954c1994 GS |
356 | |
357 | =cut | |
358 | */ | |
359 | ||
e1a479c5 BB |
360 | /* NOTE: No support for tied ISA */ |
361 | ||
79072805 | 362 | GV * |
864dbfa3 | 363 | Perl_gv_fetchmeth(pTHX_ HV *stash, const char *name, STRLEN len, I32 level) |
79072805 | 364 | { |
97aff369 | 365 | dVAR; |
463ee0b2 | 366 | GV** gvp; |
e1a479c5 BB |
367 | AV* linear_av; |
368 | SV** linear_svp; | |
369 | SV* linear_sv; | |
370 | HV* cstash; | |
371 | GV* candidate = NULL; | |
372 | CV* cand_cv = NULL; | |
373 | CV* old_cv; | |
374 | GV* topgv = NULL; | |
bfcb3514 | 375 | const char *hvname; |
e1a479c5 BB |
376 | I32 create = (level >= 0) ? 1 : 0; |
377 | I32 items; | |
378 | STRLEN packlen; | |
379 | U32 topgen_cmp; | |
a0d0e21e | 380 | |
7918f24d NC |
381 | PERL_ARGS_ASSERT_GV_FETCHMETH; |
382 | ||
af09ea45 IK |
383 | /* UNIVERSAL methods should be callable without a stash */ |
384 | if (!stash) { | |
e1a479c5 | 385 | create = 0; /* probably appropriate */ |
da51bb9b | 386 | if(!(stash = gv_stashpvs("UNIVERSAL", 0))) |
af09ea45 IK |
387 | return 0; |
388 | } | |
389 | ||
e1a479c5 BB |
390 | assert(stash); |
391 | ||
bfcb3514 NC |
392 | hvname = HvNAME_get(stash); |
393 | if (!hvname) | |
e1a479c5 | 394 | Perl_croak(aTHX_ "Can't use anonymous symbol table for method lookup"); |
e27ad1f2 | 395 | |
e1a479c5 BB |
396 | assert(hvname); |
397 | assert(name); | |
463ee0b2 | 398 | |
bfcb3514 | 399 | DEBUG_o( Perl_deb(aTHX_ "Looking for method %s in package %s\n",name,hvname) ); |
44a8e56a | 400 | |
dd69841b | 401 | topgen_cmp = HvMROMETA(stash)->cache_gen + PL_sub_generation; |
e1a479c5 BB |
402 | |
403 | /* check locally for a real method or a cache entry */ | |
404 | gvp = (GV**)hv_fetch(stash, name, len, create); | |
405 | if(gvp) { | |
406 | topgv = *gvp; | |
407 | assert(topgv); | |
408 | if (SvTYPE(topgv) != SVt_PVGV) | |
409 | gv_init(topgv, stash, name, len, TRUE); | |
410 | if ((cand_cv = GvCV(topgv))) { | |
411 | /* If genuine method or valid cache entry, use it */ | |
412 | if (!GvCVGEN(topgv) || GvCVGEN(topgv) == topgen_cmp) { | |
413 | return topgv; | |
414 | } | |
415 | else { | |
416 | /* stale cache entry, junk it and move on */ | |
417 | SvREFCNT_dec(cand_cv); | |
418 | GvCV(topgv) = cand_cv = NULL; | |
419 | GvCVGEN(topgv) = 0; | |
420 | } | |
421 | } | |
422 | else if (GvCVGEN(topgv) == topgen_cmp) { | |
423 | /* cache indicates no such method definitively */ | |
424 | return 0; | |
425 | } | |
463ee0b2 | 426 | } |
79072805 | 427 | |
e1a479c5 BB |
428 | packlen = HvNAMELEN_get(stash); |
429 | if (packlen >= 7 && strEQ(hvname + packlen - 7, "::SUPER")) { | |
430 | HV* basestash; | |
431 | packlen -= 7; | |
432 | basestash = gv_stashpvn(hvname, packlen, GV_ADD); | |
433 | linear_av = mro_get_linear_isa(basestash); | |
9607fc9c | 434 | } |
e1a479c5 BB |
435 | else { |
436 | linear_av = mro_get_linear_isa(stash); /* has ourselves at the top of the list */ | |
79072805 | 437 | } |
a0d0e21e | 438 | |
e1a479c5 BB |
439 | linear_svp = AvARRAY(linear_av) + 1; /* skip over self */ |
440 | items = AvFILLp(linear_av); /* no +1, to skip over self */ | |
441 | while (items--) { | |
442 | linear_sv = *linear_svp++; | |
443 | assert(linear_sv); | |
444 | cstash = gv_stashsv(linear_sv, 0); | |
445 | ||
dd69841b | 446 | if (!cstash) { |
b0c482e3 RGS |
447 | if (ckWARN(WARN_SYNTAX)) |
448 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Can't locate package %"SVf" for @%s::ISA", | |
e1a479c5 BB |
449 | SVfARG(linear_sv), hvname); |
450 | continue; | |
451 | } | |
9607fc9c | 452 | |
e1a479c5 BB |
453 | assert(cstash); |
454 | ||
455 | gvp = (GV**)hv_fetch(cstash, name, len, 0); | |
456 | if (!gvp) continue; | |
457 | candidate = *gvp; | |
458 | assert(candidate); | |
459 | if (SvTYPE(candidate) != SVt_PVGV) gv_init(candidate, cstash, name, len, TRUE); | |
460 | if (SvTYPE(candidate) == SVt_PVGV && (cand_cv = GvCV(candidate)) && !GvCVGEN(candidate)) { | |
461 | /* | |
462 | * Found real method, cache method in topgv if: | |
463 | * 1. topgv has no synonyms (else inheritance crosses wires) | |
464 | * 2. method isn't a stub (else AUTOLOAD fails spectacularly) | |
465 | */ | |
466 | if (topgv && (GvREFCNT(topgv) == 1) && (CvROOT(cand_cv) || CvXSUB(cand_cv))) { | |
467 | if ((old_cv = GvCV(topgv))) SvREFCNT_dec(old_cv); | |
468 | SvREFCNT_inc_simple_void_NN(cand_cv); | |
469 | GvCV(topgv) = cand_cv; | |
470 | GvCVGEN(topgv) = topgen_cmp; | |
471 | } | |
472 | return candidate; | |
473 | } | |
474 | } | |
9607fc9c | 475 | |
e1a479c5 BB |
476 | /* Check UNIVERSAL without caching */ |
477 | if(level == 0 || level == -1) { | |
478 | candidate = gv_fetchmeth(NULL, name, len, 1); | |
479 | if(candidate) { | |
480 | cand_cv = GvCV(candidate); | |
481 | if (topgv && (GvREFCNT(topgv) == 1) && (CvROOT(cand_cv) || CvXSUB(cand_cv))) { | |
482 | if ((old_cv = GvCV(topgv))) SvREFCNT_dec(old_cv); | |
483 | SvREFCNT_inc_simple_void_NN(cand_cv); | |
484 | GvCV(topgv) = cand_cv; | |
485 | GvCVGEN(topgv) = topgen_cmp; | |
486 | } | |
487 | return candidate; | |
488 | } | |
489 | } | |
490 | ||
491 | if (topgv && GvREFCNT(topgv) == 1) { | |
492 | /* cache the fact that the method is not defined */ | |
493 | GvCVGEN(topgv) = topgen_cmp; | |
a0d0e21e LW |
494 | } |
495 | ||
79072805 LW |
496 | return 0; |
497 | } | |
498 | ||
954c1994 | 499 | /* |
611c1e95 IZ |
500 | =for apidoc gv_fetchmeth_autoload |
501 | ||
502 | Same as gv_fetchmeth(), but looks for autoloaded subroutines too. | |
503 | Returns a glob for the subroutine. | |
504 | ||
505 | For an autoloaded subroutine without a GV, will create a GV even | |
506 | if C<level < 0>. For an autoloaded subroutine without a stub, GvCV() | |
507 | of the result may be zero. | |
508 | ||
509 | =cut | |
510 | */ | |
511 | ||
512 | GV * | |
513 | Perl_gv_fetchmeth_autoload(pTHX_ HV *stash, const char *name, STRLEN len, I32 level) | |
514 | { | |
515 | GV *gv = gv_fetchmeth(stash, name, len, level); | |
516 | ||
7918f24d NC |
517 | PERL_ARGS_ASSERT_GV_FETCHMETH_AUTOLOAD; |
518 | ||
611c1e95 | 519 | if (!gv) { |
611c1e95 IZ |
520 | CV *cv; |
521 | GV **gvp; | |
522 | ||
523 | if (!stash) | |
6136c704 | 524 | return NULL; /* UNIVERSAL::AUTOLOAD could cause trouble */ |
7edbdc6b | 525 | if (len == S_autolen && memEQ(name, S_autoload, S_autolen)) |
6136c704 | 526 | return NULL; |
5c7983e5 | 527 | if (!(gv = gv_fetchmeth(stash, S_autoload, S_autolen, FALSE))) |
6136c704 | 528 | return NULL; |
611c1e95 IZ |
529 | cv = GvCV(gv); |
530 | if (!(CvROOT(cv) || CvXSUB(cv))) | |
6136c704 | 531 | return NULL; |
611c1e95 IZ |
532 | /* Have an autoload */ |
533 | if (level < 0) /* Cannot do without a stub */ | |
534 | gv_fetchmeth(stash, name, len, 0); | |
535 | gvp = (GV**)hv_fetch(stash, name, len, (level >= 0)); | |
536 | if (!gvp) | |
6136c704 | 537 | return NULL; |
611c1e95 IZ |
538 | return *gvp; |
539 | } | |
540 | return gv; | |
541 | } | |
542 | ||
543 | /* | |
954c1994 GS |
544 | =for apidoc gv_fetchmethod_autoload |
545 | ||
546 | Returns the glob which contains the subroutine to call to invoke the method | |
547 | on the C<stash>. In fact in the presence of autoloading this may be the | |
548 | glob for "AUTOLOAD". In this case the corresponding variable $AUTOLOAD is | |
b267980d | 549 | already setup. |
954c1994 GS |
550 | |
551 | The third parameter of C<gv_fetchmethod_autoload> determines whether | |
552 | AUTOLOAD lookup is performed if the given method is not present: non-zero | |
b267980d | 553 | means yes, look for AUTOLOAD; zero means no, don't look for AUTOLOAD. |
954c1994 | 554 | Calling C<gv_fetchmethod> is equivalent to calling C<gv_fetchmethod_autoload> |
b267980d | 555 | with a non-zero C<autoload> parameter. |
954c1994 GS |
556 | |
557 | These functions grant C<"SUPER"> token as a prefix of the method name. Note | |
558 | that if you want to keep the returned glob for a long time, you need to | |
559 | check for it being "AUTOLOAD", since at the later time the call may load a | |
560 | different subroutine due to $AUTOLOAD changing its value. Use the glob | |
b267980d | 561 | created via a side effect to do this. |
954c1994 GS |
562 | |
563 | These functions have the same side-effects and as C<gv_fetchmeth> with | |
564 | C<level==0>. C<name> should be writable if contains C<':'> or C<' | |
565 | ''>. The warning against passing the GV returned by C<gv_fetchmeth> to | |
b267980d | 566 | C<call_sv> apply equally to these functions. |
954c1994 GS |
567 | |
568 | =cut | |
569 | */ | |
570 | ||
7d3b1f61 BB |
571 | STATIC HV* |
572 | S_gv_get_super_pkg(pTHX_ const char* name, I32 namelen) | |
573 | { | |
574 | AV* superisa; | |
575 | GV** gvp; | |
576 | GV* gv; | |
577 | HV* stash; | |
578 | ||
7918f24d NC |
579 | PERL_ARGS_ASSERT_GV_GET_SUPER_PKG; |
580 | ||
7d3b1f61 BB |
581 | stash = gv_stashpvn(name, namelen, 0); |
582 | if(stash) return stash; | |
583 | ||
584 | /* If we must create it, give it an @ISA array containing | |
585 | the real package this SUPER is for, so that it's tied | |
586 | into the cache invalidation code correctly */ | |
587 | stash = gv_stashpvn(name, namelen, GV_ADD); | |
588 | gvp = (GV**)hv_fetchs(stash, "ISA", TRUE); | |
589 | gv = *gvp; | |
590 | gv_init(gv, stash, "ISA", 3, TRUE); | |
591 | superisa = GvAVn(gv); | |
592 | GvMULTI_on(gv); | |
ad64d0ec | 593 | sv_magic(MUTABLE_SV(superisa), MUTABLE_SV(gv), PERL_MAGIC_isa, NULL, 0); |
8e3a4a30 | 594 | #ifdef USE_ITHREADS |
7d3b1f61 | 595 | av_push(superisa, newSVpv(CopSTASHPV(PL_curcop), 0)); |
8e3a4a30 NC |
596 | #else |
597 | av_push(superisa, newSVhek(CopSTASH(PL_curcop) | |
598 | ? HvNAME_HEK(CopSTASH(PL_curcop)) : NULL)); | |
599 | #endif | |
7d3b1f61 BB |
600 | |
601 | return stash; | |
602 | } | |
603 | ||
dc848c6f | 604 | GV * |
864dbfa3 | 605 | Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload) |
dc848c6f | 606 | { |
547bb267 NC |
607 | PERL_ARGS_ASSERT_GV_FETCHMETHOD_AUTOLOAD; |
608 | ||
256d1bb2 NC |
609 | return gv_fetchmethod_flags(stash, name, autoload ? GV_AUTOLOAD : 0); |
610 | } | |
611 | ||
612 | /* Don't merge this yet, as it's likely to get a len parameter, and possibly | |
613 | even a U32 hash */ | |
614 | GV * | |
615 | Perl_gv_fetchmethod_flags(pTHX_ HV *stash, const char *name, U32 flags) | |
616 | { | |
97aff369 | 617 | dVAR; |
08105a92 | 618 | register const char *nend; |
c445ea15 | 619 | const char *nsplit = NULL; |
a0d0e21e | 620 | GV* gv; |
0dae17bd | 621 | HV* ostash = stash; |
c94593d0 | 622 | const char * const origname = name; |
ad64d0ec | 623 | SV *const error_report = MUTABLE_SV(stash); |
256d1bb2 NC |
624 | const U32 autoload = flags & GV_AUTOLOAD; |
625 | const U32 do_croak = flags & GV_CROAK; | |
0dae17bd | 626 | |
547bb267 | 627 | PERL_ARGS_ASSERT_GV_FETCHMETHOD_FLAGS; |
7918f24d | 628 | |
eff494dd | 629 | if (SvTYPE(stash) < SVt_PVHV) |
5c284bb0 | 630 | stash = NULL; |
c9bf4021 NC |
631 | else { |
632 | /* The only way stash can become NULL later on is if nsplit is set, | |
633 | which in turn means that there is no need for a SVt_PVHV case | |
634 | the error reporting code. */ | |
635 | } | |
b267980d | 636 | |
463ee0b2 | 637 | for (nend = name; *nend; nend++) { |
c94593d0 | 638 | if (*nend == '\'') { |
a0d0e21e | 639 | nsplit = nend; |
c94593d0 NC |
640 | name = nend + 1; |
641 | } | |
642 | else if (*nend == ':' && *(nend + 1) == ':') { | |
643 | nsplit = nend++; | |
644 | name = nend + 1; | |
645 | } | |
a0d0e21e LW |
646 | } |
647 | if (nsplit) { | |
7edbdc6b | 648 | if ((nsplit - origname) == 5 && memEQ(origname, "SUPER", 5)) { |
9607fc9c | 649 | /* ->SUPER::method should really be looked up in original stash */ |
b37c2d43 | 650 | SV * const tmpstr = sv_2mortal(Perl_newSVpvf(aTHX_ "%s::SUPER", |
1d7c1841 | 651 | CopSTASHPV(PL_curcop))); |
af09ea45 | 652 | /* __PACKAGE__::SUPER stash should be autovivified */ |
7d3b1f61 | 653 | stash = gv_get_super_pkg(SvPVX_const(tmpstr), SvCUR(tmpstr)); |
cea2e8a9 | 654 | DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n", |
bfcb3514 | 655 | origname, HvNAME_get(stash), name) ); |
4633a7c4 | 656 | } |
e189a56d | 657 | else { |
af09ea45 | 658 | /* don't autovifify if ->NoSuchStash::method */ |
da51bb9b | 659 | stash = gv_stashpvn(origname, nsplit - origname, 0); |
e189a56d IK |
660 | |
661 | /* however, explicit calls to Pkg::SUPER::method may | |
662 | happen, and may require autovivification to work */ | |
663 | if (!stash && (nsplit - origname) >= 7 && | |
664 | strnEQ(nsplit - 7, "::SUPER", 7) && | |
da51bb9b | 665 | gv_stashpvn(origname, nsplit - origname - 7, 0)) |
7d3b1f61 | 666 | stash = gv_get_super_pkg(origname, nsplit - origname); |
e189a56d | 667 | } |
0dae17bd | 668 | ostash = stash; |
4633a7c4 LW |
669 | } |
670 | ||
9607fc9c | 671 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
a0d0e21e | 672 | if (!gv) { |
2f6e0fe7 | 673 | if (strEQ(name,"import") || strEQ(name,"unimport")) |
159b6efe | 674 | gv = MUTABLE_GV(&PL_sv_yes); |
dc848c6f | 675 | else if (autoload) |
0dae17bd | 676 | gv = gv_autoload4(ostash, name, nend - name, TRUE); |
256d1bb2 NC |
677 | if (!gv && do_croak) { |
678 | /* Right now this is exclusively for the benefit of S_method_common | |
679 | in pp_hot.c */ | |
680 | if (stash) { | |
681 | Perl_croak(aTHX_ | |
682 | "Can't locate object method \"%s\" via package \"%.*s\"", | |
c49b597d | 683 | name, (int)HvNAMELEN_get(stash), HvNAME_get(stash)); |
256d1bb2 NC |
684 | } |
685 | else { | |
686 | STRLEN packlen; | |
687 | const char *packname; | |
688 | ||
256d1bb2 NC |
689 | if (nsplit) { |
690 | packlen = nsplit - origname; | |
691 | packname = origname; | |
256d1bb2 NC |
692 | } else { |
693 | packname = SvPV_const(error_report, packlen); | |
694 | } | |
695 | ||
696 | Perl_croak(aTHX_ | |
697 | "Can't locate object method \"%s\" via package \"%.*s\"" | |
698 | " (perhaps you forgot to load \"%.*s\"?)", | |
699 | name, (int)packlen, packname, (int)packlen, packname); | |
700 | } | |
701 | } | |
463ee0b2 | 702 | } |
dc848c6f | 703 | else if (autoload) { |
9d4ba2ae | 704 | CV* const cv = GvCV(gv); |
09280a33 CS |
705 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
706 | GV* stubgv; | |
707 | GV* autogv; | |
708 | ||
709 | if (CvANON(cv)) | |
710 | stubgv = gv; | |
711 | else { | |
712 | stubgv = CvGV(cv); | |
713 | if (GvCV(stubgv) != cv) /* orphaned import */ | |
714 | stubgv = gv; | |
715 | } | |
716 | autogv = gv_autoload4(GvSTASH(stubgv), | |
717 | GvNAME(stubgv), GvNAMELEN(stubgv), TRUE); | |
dc848c6f | 718 | if (autogv) |
719 | gv = autogv; | |
720 | } | |
721 | } | |
44a8e56a | 722 | |
723 | return gv; | |
724 | } | |
725 | ||
726 | GV* | |
864dbfa3 | 727 | Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method) |
44a8e56a | 728 | { |
27da23d5 | 729 | dVAR; |
44a8e56a | 730 | GV* gv; |
731 | CV* cv; | |
732 | HV* varstash; | |
733 | GV* vargv; | |
734 | SV* varsv; | |
e1ec3a88 | 735 | const char *packname = ""; |
eae70eaa | 736 | STRLEN packname_len = 0; |
44a8e56a | 737 | |
7918f24d NC |
738 | PERL_ARGS_ASSERT_GV_AUTOLOAD4; |
739 | ||
7edbdc6b | 740 | if (len == S_autolen && memEQ(name, S_autoload, S_autolen)) |
a0714e2c | 741 | return NULL; |
0dae17bd GS |
742 | if (stash) { |
743 | if (SvTYPE(stash) < SVt_PVHV) { | |
ad64d0ec | 744 | packname = SvPV_const(MUTABLE_SV(stash), packname_len); |
5c284bb0 | 745 | stash = NULL; |
0dae17bd GS |
746 | } |
747 | else { | |
bfcb3514 | 748 | packname = HvNAME_get(stash); |
7423f6db | 749 | packname_len = HvNAMELEN_get(stash); |
0dae17bd GS |
750 | } |
751 | } | |
5c7983e5 | 752 | if (!(gv = gv_fetchmeth(stash, S_autoload, S_autolen, FALSE))) |
a0714e2c | 753 | return NULL; |
dc848c6f | 754 | cv = GvCV(gv); |
755 | ||
adb5a9ae | 756 | if (!(CvROOT(cv) || CvXSUB(cv))) |
a0714e2c | 757 | return NULL; |
ed850460 | 758 | |
dc848c6f | 759 | /* |
760 | * Inheriting AUTOLOAD for non-methods works ... for now. | |
761 | */ | |
041457d9 DM |
762 | if (!method && (GvCVGEN(gv) || GvSTASH(gv) != stash) |
763 | && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX) | |
764 | ) | |
12bcd1a6 | 765 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
dc848c6f | 766 | "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated", |
0dae17bd | 767 | packname, (int)len, name); |
44a8e56a | 768 | |
aed2304a | 769 | if (CvISXSUB(cv)) { |
adb5a9ae DM |
770 | /* rather than lookup/init $AUTOLOAD here |
771 | * only to have the XSUB do another lookup for $AUTOLOAD | |
772 | * and split that value on the last '::', | |
773 | * pass along the same data via some unused fields in the CV | |
774 | */ | |
775 | CvSTASH(cv) = stash; | |
f880fe2f | 776 | SvPV_set(cv, (char *)name); /* cast to lose constness warning */ |
b162af07 | 777 | SvCUR_set(cv, len); |
adb5a9ae DM |
778 | return gv; |
779 | } | |
adb5a9ae | 780 | |
44a8e56a | 781 | /* |
782 | * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name. | |
783 | * The subroutine's original name may not be "AUTOLOAD", so we don't | |
784 | * use that, but for lack of anything better we will use the sub's | |
785 | * original package to look up $AUTOLOAD. | |
786 | */ | |
787 | varstash = GvSTASH(CvGV(cv)); | |
5c7983e5 | 788 | vargv = *(GV**)hv_fetch(varstash, S_autoload, S_autolen, TRUE); |
3d35f11b GS |
789 | ENTER; |
790 | ||
c69033f2 | 791 | if (!isGV(vargv)) { |
5c7983e5 | 792 | gv_init(vargv, varstash, S_autoload, S_autolen, FALSE); |
c69033f2 | 793 | #ifdef PERL_DONT_CREATE_GVSV |
561b68a9 | 794 | GvSV(vargv) = newSV(0); |
c69033f2 NC |
795 | #endif |
796 | } | |
3d35f11b | 797 | LEAVE; |
e203899d | 798 | varsv = GvSVn(vargv); |
7423f6db | 799 | sv_setpvn(varsv, packname, packname_len); |
396482e1 | 800 | sv_catpvs(varsv, "::"); |
44a8e56a | 801 | sv_catpvn(varsv, name, len); |
a0d0e21e LW |
802 | return gv; |
803 | } | |
804 | ||
44a2ac75 YO |
805 | |
806 | /* require_tie_mod() internal routine for requiring a module | |
807 | * that implements the logic of automatical ties like %! and %- | |
808 | * | |
809 | * The "gv" parameter should be the glob. | |
45cbc99a RGS |
810 | * "varpv" holds the name of the var, used for error messages. |
811 | * "namesv" holds the module name. Its refcount will be decremented. | |
44a2ac75 | 812 | * "methpv" holds the method name to test for to check that things |
45cbc99a RGS |
813 | * are working reasonably close to as expected. |
814 | * "flags": if flag & 1 then save the scalar before loading. | |
44a2ac75 YO |
815 | * For the protection of $! to work (it is set by this routine) |
816 | * the sv slot must already be magicalized. | |
d2c93421 | 817 | */ |
44a2ac75 YO |
818 | STATIC HV* |
819 | S_require_tie_mod(pTHX_ GV *gv, const char *varpv, SV* namesv, const char *methpv,const U32 flags) | |
d2c93421 | 820 | { |
27da23d5 | 821 | dVAR; |
da51bb9b | 822 | HV* stash = gv_stashsv(namesv, 0); |
45cbc99a | 823 | |
7918f24d NC |
824 | PERL_ARGS_ASSERT_REQUIRE_TIE_MOD; |
825 | ||
44a2ac75 | 826 | if (!stash || !(gv_fetchmethod(stash, methpv))) { |
45cbc99a RGS |
827 | SV *module = newSVsv(namesv); |
828 | char varname = *varpv; /* varpv might be clobbered by load_module, | |
829 | so save it. For the moment it's always | |
830 | a single char. */ | |
d2c93421 | 831 | dSP; |
d2c93421 | 832 | ENTER; |
44a2ac75 | 833 | if ( flags & 1 ) |
45cbc99a | 834 | save_scalar(gv); |
cac54379 | 835 | PUSHSTACKi(PERLSI_MAGIC); |
45cbc99a | 836 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, module, NULL); |
cac54379 | 837 | POPSTACK; |
d2c93421 RH |
838 | LEAVE; |
839 | SPAGAIN; | |
da51bb9b | 840 | stash = gv_stashsv(namesv, 0); |
44a2ac75 | 841 | if (!stash) |
45cbc99a RGS |
842 | Perl_croak(aTHX_ "panic: Can't use %%%c because %"SVf" is not available", |
843 | varname, SVfARG(namesv)); | |
844 | else if (!gv_fetchmethod(stash, methpv)) | |
845 | Perl_croak(aTHX_ "panic: Can't use %%%c because %"SVf" does not support method %s", | |
846 | varname, SVfARG(namesv), methpv); | |
d2c93421 | 847 | } |
45cbc99a | 848 | SvREFCNT_dec(namesv); |
44a2ac75 | 849 | return stash; |
d2c93421 RH |
850 | } |
851 | ||
954c1994 GS |
852 | /* |
853 | =for apidoc gv_stashpv | |
854 | ||
da51bb9b | 855 | Returns a pointer to the stash for a specified package. Uses C<strlen> to |
75c442e4 | 856 | determine the length of C<name>, then calls C<gv_stashpvn()>. |
954c1994 GS |
857 | |
858 | =cut | |
859 | */ | |
860 | ||
a0d0e21e | 861 | HV* |
864dbfa3 | 862 | Perl_gv_stashpv(pTHX_ const char *name, I32 create) |
a0d0e21e | 863 | { |
7918f24d | 864 | PERL_ARGS_ASSERT_GV_STASHPV; |
dc437b57 | 865 | return gv_stashpvn(name, strlen(name), create); |
866 | } | |
867 | ||
bc96cb06 SH |
868 | /* |
869 | =for apidoc gv_stashpvn | |
870 | ||
da51bb9b NC |
871 | Returns a pointer to the stash for a specified package. The C<namelen> |
872 | parameter indicates the length of the C<name>, in bytes. C<flags> is passed | |
873 | to C<gv_fetchpvn_flags()>, so if set to C<GV_ADD> then the package will be | |
874 | created if it does not already exist. If the package does not exist and | |
875 | C<flags> is 0 (or any other setting that does not create packages) then NULL | |
876 | is returned. | |
877 | ||
bc96cb06 SH |
878 | |
879 | =cut | |
880 | */ | |
881 | ||
dc437b57 | 882 | HV* |
da51bb9b | 883 | Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 flags) |
dc437b57 | 884 | { |
0cea0058 | 885 | char smallbuf[128]; |
46fc3d4c | 886 | char *tmpbuf; |
a0d0e21e LW |
887 | HV *stash; |
888 | GV *tmpgv; | |
dc437b57 | 889 | |
7918f24d NC |
890 | PERL_ARGS_ASSERT_GV_STASHPVN; |
891 | ||
798b63bc | 892 | if (namelen + 2 <= sizeof smallbuf) |
46fc3d4c | 893 | tmpbuf = smallbuf; |
894 | else | |
2ae0db35 | 895 | Newx(tmpbuf, namelen + 2, char); |
dc437b57 | 896 | Copy(name,tmpbuf,namelen,char); |
897 | tmpbuf[namelen++] = ':'; | |
898 | tmpbuf[namelen++] = ':'; | |
da51bb9b | 899 | tmpgv = gv_fetchpvn_flags(tmpbuf, namelen, flags, SVt_PVHV); |
46fc3d4c | 900 | if (tmpbuf != smallbuf) |
901 | Safefree(tmpbuf); | |
a0d0e21e | 902 | if (!tmpgv) |
da51bb9b | 903 | return NULL; |
a0d0e21e LW |
904 | if (!GvHV(tmpgv)) |
905 | GvHV(tmpgv) = newHV(); | |
906 | stash = GvHV(tmpgv); | |
bfcb3514 | 907 | if (!HvNAME_get(stash)) |
51a37f80 | 908 | hv_name_set(stash, name, namelen, 0); |
a0d0e21e | 909 | return stash; |
463ee0b2 LW |
910 | } |
911 | ||
954c1994 GS |
912 | /* |
913 | =for apidoc gv_stashsv | |
914 | ||
da51bb9b | 915 | Returns a pointer to the stash for a specified package. See C<gv_stashpvn>. |
954c1994 GS |
916 | |
917 | =cut | |
918 | */ | |
919 | ||
a0d0e21e | 920 | HV* |
da51bb9b | 921 | Perl_gv_stashsv(pTHX_ SV *sv, I32 flags) |
a0d0e21e | 922 | { |
dc437b57 | 923 | STRLEN len; |
9d4ba2ae | 924 | const char * const ptr = SvPV_const(sv,len); |
7918f24d NC |
925 | |
926 | PERL_ARGS_ASSERT_GV_STASHSV; | |
927 | ||
da51bb9b | 928 | return gv_stashpvn(ptr, len, flags); |
a0d0e21e LW |
929 | } |
930 | ||
931 | ||
463ee0b2 | 932 | GV * |
fe9845cc | 933 | Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, const svtype sv_type) { |
7918f24d | 934 | PERL_ARGS_ASSERT_GV_FETCHPV; |
b7787f18 | 935 | return gv_fetchpvn_flags(nambeg, strlen(nambeg), add, sv_type); |
7a5fd60d NC |
936 | } |
937 | ||
938 | GV * | |
fe9845cc | 939 | Perl_gv_fetchsv(pTHX_ SV *name, I32 flags, const svtype sv_type) { |
7a5fd60d | 940 | STRLEN len; |
9d4ba2ae | 941 | const char * const nambeg = SvPV_const(name, len); |
7918f24d | 942 | PERL_ARGS_ASSERT_GV_FETCHSV; |
7a5fd60d NC |
943 | return gv_fetchpvn_flags(nambeg, len, flags | SvUTF8(name), sv_type); |
944 | } | |
945 | ||
946 | GV * | |
947 | Perl_gv_fetchpvn_flags(pTHX_ const char *nambeg, STRLEN full_len, I32 flags, | |
fe9845cc | 948 | const svtype sv_type) |
79072805 | 949 | { |
97aff369 | 950 | dVAR; |
08105a92 | 951 | register const char *name = nambeg; |
c445ea15 | 952 | register GV *gv = NULL; |
79072805 | 953 | GV**gvp; |
79072805 | 954 | I32 len; |
b3d904f3 | 955 | register const char *name_cursor; |
c445ea15 | 956 | HV *stash = NULL; |
add2581e | 957 | const I32 no_init = flags & (GV_NOADD_NOINIT | GV_NOINIT); |
e26df76a | 958 | const I32 no_expand = flags & GV_NOEXPAND; |
780a5241 | 959 | const I32 add = flags & ~GV_NOADD_MASK; |
b3d904f3 NC |
960 | const char *const name_end = nambeg + full_len; |
961 | const char *const name_em1 = name_end - 1; | |
5e0caaeb | 962 | U32 faking_it; |
79072805 | 963 | |
7918f24d NC |
964 | PERL_ARGS_ASSERT_GV_FETCHPVN_FLAGS; |
965 | ||
fafc274c NC |
966 | if (flags & GV_NOTQUAL) { |
967 | /* Caller promised that there is no stash, so we can skip the check. */ | |
968 | len = full_len; | |
969 | goto no_stash; | |
970 | } | |
971 | ||
b208e10c NC |
972 | if (full_len > 2 && *name == '*' && isALPHA(name[1])) { |
973 | /* accidental stringify on a GV? */ | |
c07a80fd | 974 | name++; |
b208e10c | 975 | } |
c07a80fd | 976 | |
b3d904f3 NC |
977 | for (name_cursor = name; name_cursor < name_end; name_cursor++) { |
978 | if ((*name_cursor == ':' && name_cursor < name_em1 | |
979 | && name_cursor[1] == ':') | |
980 | || (*name_cursor == '\'' && name_cursor[1])) | |
463ee0b2 | 981 | { |
463ee0b2 | 982 | if (!stash) |
3280af22 | 983 | stash = PL_defstash; |
dc437b57 | 984 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0714e2c | 985 | return NULL; |
463ee0b2 | 986 | |
b3d904f3 | 987 | len = name_cursor - name; |
85e6fe83 | 988 | if (len > 0) { |
0cea0058 | 989 | char smallbuf[128]; |
62b57502 | 990 | char *tmpbuf; |
62b57502 | 991 | |
798b63bc | 992 | if (len + 2 <= (I32)sizeof (smallbuf)) |
3c78fafa | 993 | tmpbuf = smallbuf; |
62b57502 | 994 | else |
2ae0db35 | 995 | Newx(tmpbuf, len+2, char); |
a0d0e21e LW |
996 | Copy(name, tmpbuf, len, char); |
997 | tmpbuf[len++] = ':'; | |
998 | tmpbuf[len++] = ':'; | |
463ee0b2 | 999 | gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); |
a0714e2c | 1000 | gv = gvp ? *gvp : NULL; |
159b6efe | 1001 | if (gv && gv != (const GV *)&PL_sv_undef) { |
6fa846a0 | 1002 | if (SvTYPE(gv) != SVt_PVGV) |
0f303493 | 1003 | gv_init(gv, stash, tmpbuf, len, (add & GV_ADDMULTI)); |
6fa846a0 GS |
1004 | else |
1005 | GvMULTI_on(gv); | |
1006 | } | |
3c78fafa | 1007 | if (tmpbuf != smallbuf) |
62b57502 | 1008 | Safefree(tmpbuf); |
159b6efe | 1009 | if (!gv || gv == (const GV *)&PL_sv_undef) |
a0714e2c | 1010 | return NULL; |
85e6fe83 | 1011 | |
463ee0b2 LW |
1012 | if (!(stash = GvHV(gv))) |
1013 | stash = GvHV(gv) = newHV(); | |
85e6fe83 | 1014 | |
bfcb3514 | 1015 | if (!HvNAME_get(stash)) |
b3d904f3 | 1016 | hv_name_set(stash, nambeg, name_cursor - nambeg, 0); |
463ee0b2 LW |
1017 | } |
1018 | ||
b3d904f3 NC |
1019 | if (*name_cursor == ':') |
1020 | name_cursor++; | |
1021 | name_cursor++; | |
1022 | name = name_cursor; | |
ad6bfa9d | 1023 | if (name == name_end) |
159b6efe NC |
1024 | return gv |
1025 | ? gv : MUTABLE_GV(*hv_fetchs(PL_defstash, "main::", TRUE)); | |
79072805 | 1026 | } |
79072805 | 1027 | } |
b3d904f3 | 1028 | len = name_cursor - name; |
463ee0b2 LW |
1029 | |
1030 | /* No stash in name, so see how we can default */ | |
1031 | ||
1032 | if (!stash) { | |
fafc274c | 1033 | no_stash: |
8ccce9ae | 1034 | if (len && isIDFIRST_lazy(name)) { |
9607fc9c | 1035 | bool global = FALSE; |
1036 | ||
8ccce9ae NC |
1037 | switch (len) { |
1038 | case 1: | |
18ea00d7 | 1039 | if (*name == '_') |
9d116dd7 | 1040 | global = TRUE; |
18ea00d7 | 1041 | break; |
8ccce9ae NC |
1042 | case 3: |
1043 | if ((name[0] == 'I' && name[1] == 'N' && name[2] == 'C') | |
1044 | || (name[0] == 'E' && name[1] == 'N' && name[2] == 'V') | |
1045 | || (name[0] == 'S' && name[1] == 'I' && name[2] == 'G')) | |
9d116dd7 | 1046 | global = TRUE; |
18ea00d7 | 1047 | break; |
8ccce9ae NC |
1048 | case 4: |
1049 | if (name[0] == 'A' && name[1] == 'R' && name[2] == 'G' | |
1050 | && name[3] == 'V') | |
9d116dd7 | 1051 | global = TRUE; |
18ea00d7 | 1052 | break; |
8ccce9ae NC |
1053 | case 5: |
1054 | if (name[0] == 'S' && name[1] == 'T' && name[2] == 'D' | |
1055 | && name[3] == 'I' && name[4] == 'N') | |
463ee0b2 | 1056 | global = TRUE; |
18ea00d7 | 1057 | break; |
8ccce9ae NC |
1058 | case 6: |
1059 | if ((name[0] == 'S' && name[1] == 'T' && name[2] == 'D') | |
1060 | &&((name[3] == 'O' && name[4] == 'U' && name[5] == 'T') | |
1061 | ||(name[3] == 'E' && name[4] == 'R' && name[5] == 'R'))) | |
1062 | global = TRUE; | |
1063 | break; | |
1064 | case 7: | |
1065 | if (name[0] == 'A' && name[1] == 'R' && name[2] == 'G' | |
1066 | && name[3] == 'V' && name[4] == 'O' && name[5] == 'U' | |
1067 | && name[6] == 'T') | |
18ea00d7 NC |
1068 | global = TRUE; |
1069 | break; | |
463ee0b2 | 1070 | } |
9607fc9c | 1071 | |
463ee0b2 | 1072 | if (global) |
3280af22 | 1073 | stash = PL_defstash; |
923e4eb5 | 1074 | else if (IN_PERL_COMPILETIME) { |
3280af22 NIS |
1075 | stash = PL_curstash; |
1076 | if (add && (PL_hints & HINT_STRICT_VARS) && | |
748a9306 LW |
1077 | sv_type != SVt_PVCV && |
1078 | sv_type != SVt_PVGV && | |
4633a7c4 | 1079 | sv_type != SVt_PVFM && |
c07a80fd | 1080 | sv_type != SVt_PVIO && |
70ec6265 NC |
1081 | !(len == 1 && sv_type == SVt_PV && |
1082 | (*name == 'a' || *name == 'b')) ) | |
748a9306 | 1083 | { |
4633a7c4 LW |
1084 | gvp = (GV**)hv_fetch(stash,name,len,0); |
1085 | if (!gvp || | |
159b6efe | 1086 | *gvp == (const GV *)&PL_sv_undef || |
a5f75d66 AD |
1087 | SvTYPE(*gvp) != SVt_PVGV) |
1088 | { | |
d4c19fe8 | 1089 | stash = NULL; |
a5f75d66 | 1090 | } |
155aba94 GS |
1091 | else if ((sv_type == SVt_PV && !GvIMPORTED_SV(*gvp)) || |
1092 | (sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp)) || | |
1093 | (sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp)) ) | |
4633a7c4 | 1094 | { |
cea2e8a9 | 1095 | Perl_warn(aTHX_ "Variable \"%c%s\" is not imported", |
4633a7c4 LW |
1096 | sv_type == SVt_PVAV ? '@' : |
1097 | sv_type == SVt_PVHV ? '%' : '$', | |
1098 | name); | |
8ebc5c01 | 1099 | if (GvCVu(*gvp)) |
cc507455 | 1100 | Perl_warn(aTHX_ "\t(Did you mean &%s instead?)\n", name); |
d4c19fe8 | 1101 | stash = NULL; |
4633a7c4 | 1102 | } |
a0d0e21e | 1103 | } |
85e6fe83 | 1104 | } |
463ee0b2 | 1105 | else |
1d7c1841 | 1106 | stash = CopSTASH(PL_curcop); |
463ee0b2 LW |
1107 | } |
1108 | else | |
3280af22 | 1109 | stash = PL_defstash; |
463ee0b2 LW |
1110 | } |
1111 | ||
1112 | /* By this point we should have a stash and a name */ | |
1113 | ||
a0d0e21e | 1114 | if (!stash) { |
5a844595 | 1115 | if (add) { |
9d4ba2ae | 1116 | SV * const err = Perl_mess(aTHX_ |
5a844595 GS |
1117 | "Global symbol \"%s%s\" requires explicit package name", |
1118 | (sv_type == SVt_PV ? "$" | |
1119 | : sv_type == SVt_PVAV ? "@" | |
1120 | : sv_type == SVt_PVHV ? "%" | |
608b3986 | 1121 | : ""), name); |
e7f343b6 | 1122 | GV *gv; |
608b3986 AE |
1123 | if (USE_UTF8_IN_NAMES) |
1124 | SvUTF8_on(err); | |
1125 | qerror(err); | |
76f68e9b | 1126 | gv = gv_fetchpvs("<none>::", GV_ADDMULTI, SVt_PVHV); |
e7f343b6 NC |
1127 | if(!gv) { |
1128 | /* symbol table under destruction */ | |
1129 | return NULL; | |
1130 | } | |
1131 | stash = GvHV(gv); | |
a0d0e21e | 1132 | } |
d7aacf4e | 1133 | else |
a0714e2c | 1134 | return NULL; |
a0d0e21e LW |
1135 | } |
1136 | ||
1137 | if (!SvREFCNT(stash)) /* symbol table under destruction */ | |
a0714e2c | 1138 | return NULL; |
a0d0e21e | 1139 | |
79072805 | 1140 | gvp = (GV**)hv_fetch(stash,name,len,add); |
159b6efe | 1141 | if (!gvp || *gvp == (const GV *)&PL_sv_undef) |
a0714e2c | 1142 | return NULL; |
79072805 LW |
1143 | gv = *gvp; |
1144 | if (SvTYPE(gv) == SVt_PVGV) { | |
a0d0e21e | 1145 | if (add) { |
a5f75d66 | 1146 | GvMULTI_on(gv); |
a0d0e21e | 1147 | gv_init_sv(gv, sv_type); |
45cbc99a | 1148 | if (len == 1 && (sv_type == SVt_PVHV || sv_type == SVt_PVGV)) { |
44a2ac75 YO |
1149 | if (*name == '!') |
1150 | require_tie_mod(gv, "!", newSVpvs("Errno"), "TIEHASH", 1); | |
45cbc99a | 1151 | else if (*name == '-' || *name == '+') |
192b9cd1 | 1152 | require_tie_mod(gv, name, newSVpvs("Tie::Hash::NamedCapture"), "TIEHASH", 0); |
45cbc99a | 1153 | } |
a0d0e21e | 1154 | } |
79072805 | 1155 | return gv; |
add2581e | 1156 | } else if (no_init) { |
55d729e4 | 1157 | return gv; |
e26df76a NC |
1158 | } else if (no_expand && SvROK(gv)) { |
1159 | return gv; | |
79072805 | 1160 | } |
93a17b20 | 1161 | |
5e0caaeb NC |
1162 | /* Adding a new symbol. |
1163 | Unless of course there was already something non-GV here, in which case | |
1164 | we want to behave as if there was always a GV here, containing some sort | |
1165 | of subroutine. | |
1166 | Otherwise we run the risk of creating things like GvIO, which can cause | |
1167 | subtle bugs. eg the one that tripped up SQL::Translator */ | |
1168 | ||
1169 | faking_it = SvOK(gv); | |
93a17b20 | 1170 | |
0453d815 | 1171 | if (add & GV_ADDWARN && ckWARN_d(WARN_INTERNAL)) |
9014280d | 1172 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Had to create %s unexpectedly", nambeg); |
55d729e4 | 1173 | gv_init(gv, stash, name, len, add & GV_ADDMULTI); |
5e0caaeb | 1174 | gv_init_sv(gv, faking_it ? SVt_PVCV : sv_type); |
93a17b20 | 1175 | |
a0288114 | 1176 | if (isALPHA(name[0]) && ! (isLEXWARN_on ? ckWARN(WARN_ONCE) |
7272584d | 1177 | : (PL_dowarn & G_WARN_ON ) ) ) |
0453d815 PM |
1178 | GvMULTI_on(gv) ; |
1179 | ||
93a17b20 | 1180 | /* set up magic where warranted */ |
cc4c2da6 | 1181 | if (len > 1) { |
9431620d | 1182 | #ifndef EBCDIC |
cc4c2da6 | 1183 | if (*name > 'V' ) { |
6f207bd3 | 1184 | NOOP; |
cc4c2da6 | 1185 | /* Nothing else to do. |
91f565cb | 1186 | The compiler will probably turn the switch statement into a |
cc4c2da6 NC |
1187 | branch table. Make sure we avoid even that small overhead for |
1188 | the common case of lower case variable names. */ | |
9431620d NC |
1189 | } else |
1190 | #endif | |
1191 | { | |
b464bac0 | 1192 | const char * const name2 = name + 1; |
cc4c2da6 NC |
1193 | switch (*name) { |
1194 | case 'A': | |
1195 | if (strEQ(name2, "RGV")) { | |
1196 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; | |
1197 | } | |
7b8203e3 YST |
1198 | else if (strEQ(name2, "RGVOUT")) { |
1199 | GvMULTI_on(gv); | |
1200 | } | |
cc4c2da6 NC |
1201 | break; |
1202 | case 'E': | |
1203 | if (strnEQ(name2, "XPORT", 5)) | |
1204 | GvMULTI_on(gv); | |
1205 | break; | |
1206 | case 'I': | |
1207 | if (strEQ(name2, "SA")) { | |
9d4ba2ae | 1208 | AV* const av = GvAVn(gv); |
cc4c2da6 | 1209 | GvMULTI_on(gv); |
ad64d0ec NC |
1210 | sv_magic(MUTABLE_SV(av), MUTABLE_SV(gv), PERL_MAGIC_isa, |
1211 | NULL, 0); | |
cc4c2da6 NC |
1212 | /* NOTE: No support for tied ISA */ |
1213 | if ((add & GV_ADDMULTI) && strEQ(nambeg,"AnyDBM_File::ISA") | |
1214 | && AvFILLp(av) == -1) | |
1215 | { | |
e84ce9a2 MHM |
1216 | av_push(av, newSVpvs("NDBM_File")); |
1217 | gv_stashpvs("NDBM_File", GV_ADD); | |
1218 | av_push(av, newSVpvs("DB_File")); | |
1219 | gv_stashpvs("DB_File", GV_ADD); | |
1220 | av_push(av, newSVpvs("GDBM_File")); | |
1221 | gv_stashpvs("GDBM_File", GV_ADD); | |
1222 | av_push(av, newSVpvs("SDBM_File")); | |
1223 | gv_stashpvs("SDBM_File", GV_ADD); | |
1224 | av_push(av, newSVpvs("ODBM_File")); | |
1225 | gv_stashpvs("ODBM_File", GV_ADD); | |
cc4c2da6 NC |
1226 | } |
1227 | } | |
1228 | break; | |
1229 | case 'O': | |
1230 | if (strEQ(name2, "VERLOAD")) { | |
9d4ba2ae | 1231 | HV* const hv = GvHVn(gv); |
cc4c2da6 | 1232 | GvMULTI_on(gv); |
a0714e2c | 1233 | hv_magic(hv, NULL, PERL_MAGIC_overload); |
cc4c2da6 NC |
1234 | } |
1235 | break; | |
1236 | case 'S': | |
1237 | if (strEQ(name2, "IG")) { | |
1238 | HV *hv; | |
1239 | I32 i; | |
1240 | if (!PL_psig_ptr) { | |
a02a5408 JC |
1241 | Newxz(PL_psig_ptr, SIG_SIZE, SV*); |
1242 | Newxz(PL_psig_name, SIG_SIZE, SV*); | |
1243 | Newxz(PL_psig_pend, SIG_SIZE, int); | |
cc4c2da6 NC |
1244 | } |
1245 | GvMULTI_on(gv); | |
1246 | hv = GvHVn(gv); | |
a0714e2c | 1247 | hv_magic(hv, NULL, PERL_MAGIC_sig); |
cc4c2da6 | 1248 | for (i = 1; i < SIG_SIZE; i++) { |
551405c4 | 1249 | SV * const * const init = hv_fetch(hv, PL_sig_name[i], strlen(PL_sig_name[i]), 1); |
cc4c2da6 NC |
1250 | if (init) |
1251 | sv_setsv(*init, &PL_sv_undef); | |
1252 | PL_psig_ptr[i] = 0; | |
1253 | PL_psig_name[i] = 0; | |
1254 | PL_psig_pend[i] = 0; | |
1255 | } | |
1256 | } | |
1257 | break; | |
1258 | case 'V': | |
1259 | if (strEQ(name2, "ERSION")) | |
1260 | GvMULTI_on(gv); | |
1261 | break; | |
e5218da5 GA |
1262 | case '\003': /* $^CHILD_ERROR_NATIVE */ |
1263 | if (strEQ(name2, "HILD_ERROR_NATIVE")) | |
1264 | goto magicalize; | |
1265 | break; | |
cc4c2da6 NC |
1266 | case '\005': /* $^ENCODING */ |
1267 | if (strEQ(name2, "NCODING")) | |
1268 | goto magicalize; | |
1269 | break; | |
cde0cee5 YO |
1270 | case '\015': /* $^MATCH */ |
1271 | if (strEQ(name2, "ATCH")) | |
2fdbfb4d | 1272 | goto magicalize; |
cc4c2da6 NC |
1273 | case '\017': /* $^OPEN */ |
1274 | if (strEQ(name2, "PEN")) | |
1275 | goto magicalize; | |
1276 | break; | |
cde0cee5 YO |
1277 | case '\020': /* $^PREMATCH $^POSTMATCH */ |
1278 | if (strEQ(name2, "REMATCH") || strEQ(name2, "OSTMATCH")) | |
2fdbfb4d | 1279 | goto magicalize; |
cc4c2da6 NC |
1280 | case '\024': /* ${^TAINT} */ |
1281 | if (strEQ(name2, "AINT")) | |
1282 | goto ro_magicalize; | |
1283 | break; | |
7cebcbc0 | 1284 | case '\025': /* ${^UNICODE}, ${^UTF8LOCALE} */ |
a0288114 | 1285 | if (strEQ(name2, "NICODE")) |
cc4c2da6 | 1286 | goto ro_magicalize; |
a0288114 | 1287 | if (strEQ(name2, "TF8LOCALE")) |
7cebcbc0 | 1288 | goto ro_magicalize; |
e07ea26a NC |
1289 | if (strEQ(name2, "TF8CACHE")) |
1290 | goto magicalize; | |
cc4c2da6 NC |
1291 | break; |
1292 | case '\027': /* $^WARNING_BITS */ | |
1293 | if (strEQ(name2, "ARNING_BITS")) | |
1294 | goto magicalize; | |
1295 | break; | |
1296 | case '1': | |
1297 | case '2': | |
1298 | case '3': | |
1299 | case '4': | |
1300 | case '5': | |
1301 | case '6': | |
1302 | case '7': | |
1303 | case '8': | |
1304 | case '9': | |
85e6fe83 | 1305 | { |
2fdbfb4d AB |
1306 | /* Ensures that we have an all-digit variable, ${"1foo"} fails |
1307 | this test */ | |
1308 | /* This snippet is taken from is_gv_magical */ | |
cc4c2da6 NC |
1309 | const char *end = name + len; |
1310 | while (--end > name) { | |
2fdbfb4d | 1311 | if (!isDIGIT(*end)) return gv; |
cc4c2da6 | 1312 | } |
2fdbfb4d | 1313 | goto magicalize; |
1d7c1841 | 1314 | } |
dc437b57 | 1315 | } |
93a17b20 | 1316 | } |
392db708 NC |
1317 | } else { |
1318 | /* Names of length 1. (Or 0. But name is NUL terminated, so that will | |
1319 | be case '\0' in this switch statement (ie a default case) */ | |
cc4c2da6 NC |
1320 | switch (*name) { |
1321 | case '&': | |
1322 | case '`': | |
1323 | case '\'': | |
1324 | if ( | |
1325 | sv_type == SVt_PVAV || | |
1326 | sv_type == SVt_PVHV || | |
1327 | sv_type == SVt_PVCV || | |
1328 | sv_type == SVt_PVFM || | |
1329 | sv_type == SVt_PVIO | |
1330 | ) { break; } | |
1331 | PL_sawampersand = TRUE; | |
2fdbfb4d | 1332 | goto magicalize; |
cc4c2da6 NC |
1333 | |
1334 | case ':': | |
c69033f2 | 1335 | sv_setpv(GvSVn(gv),PL_chopset); |
cc4c2da6 NC |
1336 | goto magicalize; |
1337 | ||
1338 | case '?': | |
ff0cee69 | 1339 | #ifdef COMPLEX_STATUS |
c69033f2 | 1340 | SvUPGRADE(GvSVn(gv), SVt_PVLV); |
ff0cee69 | 1341 | #endif |
cc4c2da6 | 1342 | goto magicalize; |
ff0cee69 | 1343 | |
cc4c2da6 | 1344 | case '!': |
67261566 | 1345 | GvMULTI_on(gv); |
44a2ac75 | 1346 | /* If %! has been used, automatically load Errno.pm. */ |
d2c93421 | 1347 | |
ad64d0ec | 1348 | sv_magic(GvSVn(gv), MUTABLE_SV(gv), PERL_MAGIC_sv, name, len); |
d2c93421 | 1349 | |
44a2ac75 | 1350 | /* magicalization must be done before require_tie_mod is called */ |
67261566 | 1351 | if (sv_type == SVt_PVHV || sv_type == SVt_PVGV) |
44a2ac75 | 1352 | require_tie_mod(gv, "!", newSVpvs("Errno"), "TIEHASH", 1); |
d2c93421 | 1353 | |
6cef1e77 | 1354 | break; |
cc4c2da6 | 1355 | case '-': |
44a2ac75 YO |
1356 | case '+': |
1357 | GvMULTI_on(gv); /* no used once warnings here */ | |
1358 | { | |
44a2ac75 | 1359 | AV* const av = GvAVn(gv); |
ad64d0ec | 1360 | SV* const avc = (*name == '+') ? MUTABLE_SV(av) : NULL; |
44a2ac75 | 1361 | |
ad64d0ec NC |
1362 | sv_magic(MUTABLE_SV(av), avc, PERL_MAGIC_regdata, NULL, 0); |
1363 | sv_magic(GvSVn(gv), MUTABLE_SV(gv), PERL_MAGIC_sv, name, len); | |
67261566 | 1364 | if (avc) |
44a2ac75 | 1365 | SvREADONLY_on(GvSVn(gv)); |
44a2ac75 | 1366 | SvREADONLY_on(av); |
67261566 YO |
1367 | |
1368 | if (sv_type == SVt_PVHV || sv_type == SVt_PVGV) | |
192b9cd1 | 1369 | require_tie_mod(gv, name, newSVpvs("Tie::Hash::NamedCapture"), "TIEHASH", 0); |
67261566 | 1370 | |
80305961 | 1371 | break; |
cc4c2da6 NC |
1372 | } |
1373 | case '*': | |
cc4c2da6 | 1374 | case '#': |
fafcdf9e | 1375 | if (sv_type == SVt_PV && ckWARN2_d(WARN_DEPRECATED, WARN_SYNTAX)) |
cc4c2da6 | 1376 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
8ae1fe26 RGS |
1377 | "$%c is no longer supported", *name); |
1378 | break; | |
cc4c2da6 | 1379 | case '|': |
c69033f2 | 1380 | sv_setiv(GvSVn(gv), (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0); |
cc4c2da6 NC |
1381 | goto magicalize; |
1382 | ||
b3ca2e83 NC |
1383 | case '\010': /* $^H */ |
1384 | { | |
1385 | HV *const hv = GvHVn(gv); | |
1386 | hv_magic(hv, NULL, PERL_MAGIC_hints); | |
1387 | } | |
1388 | goto magicalize; | |
cc4c2da6 | 1389 | case '\023': /* $^S */ |
2fdbfb4d AB |
1390 | ro_magicalize: |
1391 | SvREADONLY_on(GvSVn(gv)); | |
1392 | /* FALL THROUGH */ | |
cc4c2da6 NC |
1393 | case '1': |
1394 | case '2': | |
1395 | case '3': | |
1396 | case '4': | |
1397 | case '5': | |
1398 | case '6': | |
1399 | case '7': | |
1400 | case '8': | |
1401 | case '9': | |
cc4c2da6 NC |
1402 | case '[': |
1403 | case '^': | |
1404 | case '~': | |
1405 | case '=': | |
1406 | case '%': | |
1407 | case '.': | |
1408 | case '(': | |
1409 | case ')': | |
1410 | case '<': | |
1411 | case '>': | |
cc4c2da6 NC |
1412 | case '\\': |
1413 | case '/': | |
1414 | case '\001': /* $^A */ | |
1415 | case '\003': /* $^C */ | |
1416 | case '\004': /* $^D */ | |
1417 | case '\005': /* $^E */ | |
1418 | case '\006': /* $^F */ | |
cc4c2da6 NC |
1419 | case '\011': /* $^I, NOT \t in EBCDIC */ |
1420 | case '\016': /* $^N */ | |
1421 | case '\017': /* $^O */ | |
1422 | case '\020': /* $^P */ | |
1423 | case '\024': /* $^T */ | |
1424 | case '\027': /* $^W */ | |
1425 | magicalize: | |
ad64d0ec | 1426 | sv_magic(GvSVn(gv), MUTABLE_SV(gv), PERL_MAGIC_sv, name, len); |
cc4c2da6 | 1427 | break; |
e521374c | 1428 | |
cc4c2da6 | 1429 | case '\014': /* $^L */ |
76f68e9b | 1430 | sv_setpvs(GvSVn(gv),"\f"); |
c69033f2 | 1431 | PL_formfeed = GvSVn(gv); |
463ee0b2 | 1432 | break; |
cc4c2da6 | 1433 | case ';': |
76f68e9b | 1434 | sv_setpvs(GvSVn(gv),"\034"); |
463ee0b2 | 1435 | break; |
cc4c2da6 NC |
1436 | case ']': |
1437 | { | |
c69033f2 | 1438 | SV * const sv = GvSVn(gv); |
d7aa5382 | 1439 | if (!sv_derived_from(PL_patchlevel, "version")) |
ac0e6a2f | 1440 | upg_version(PL_patchlevel, TRUE); |
7d54d38e SH |
1441 | GvSV(gv) = vnumify(PL_patchlevel); |
1442 | SvREADONLY_on(GvSV(gv)); | |
1443 | SvREFCNT_dec(sv); | |
93a17b20 LW |
1444 | } |
1445 | break; | |
cc4c2da6 NC |
1446 | case '\026': /* $^V */ |
1447 | { | |
c69033f2 | 1448 | SV * const sv = GvSVn(gv); |
f9be5ac8 DM |
1449 | GvSV(gv) = new_version(PL_patchlevel); |
1450 | SvREADONLY_on(GvSV(gv)); | |
1451 | SvREFCNT_dec(sv); | |
16070b82 GS |
1452 | } |
1453 | break; | |
cc4c2da6 | 1454 | } |
79072805 | 1455 | } |
93a17b20 | 1456 | return gv; |
79072805 LW |
1457 | } |
1458 | ||
1459 | void | |
35a4481c | 1460 | Perl_gv_fullname4(pTHX_ SV *sv, const GV *gv, const char *prefix, bool keepmain) |
43693395 | 1461 | { |
35a4481c | 1462 | const char *name; |
7423f6db | 1463 | STRLEN namelen; |
35a4481c | 1464 | const HV * const hv = GvSTASH(gv); |
7918f24d NC |
1465 | |
1466 | PERL_ARGS_ASSERT_GV_FULLNAME4; | |
1467 | ||
43693395 | 1468 | if (!hv) { |
0c34ef67 | 1469 | SvOK_off(sv); |
43693395 GS |
1470 | return; |
1471 | } | |
666ea192 | 1472 | sv_setpv(sv, prefix ? prefix : ""); |
a0288114 | 1473 | |
bfcb3514 | 1474 | name = HvNAME_get(hv); |
7423f6db NC |
1475 | if (name) { |
1476 | namelen = HvNAMELEN_get(hv); | |
1477 | } else { | |
e27ad1f2 | 1478 | name = "__ANON__"; |
7423f6db NC |
1479 | namelen = 8; |
1480 | } | |
a0288114 | 1481 | |
e27ad1f2 | 1482 | if (keepmain || strNE(name, "main")) { |
7423f6db | 1483 | sv_catpvn(sv,name,namelen); |
396482e1 | 1484 | sv_catpvs(sv,"::"); |
43693395 | 1485 | } |
257984c0 | 1486 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); |
43693395 GS |
1487 | } |
1488 | ||
1489 | void | |
35a4481c | 1490 | Perl_gv_efullname4(pTHX_ SV *sv, const GV *gv, const char *prefix, bool keepmain) |
43693395 | 1491 | { |
46c461b5 | 1492 | const GV * const egv = GvEGV(gv); |
7918f24d NC |
1493 | |
1494 | PERL_ARGS_ASSERT_GV_EFULLNAME4; | |
1495 | ||
46c461b5 | 1496 | gv_fullname4(sv, egv ? egv : gv, prefix, keepmain); |
43693395 GS |
1497 | } |
1498 | ||
79072805 | 1499 | IO * |
864dbfa3 | 1500 | Perl_newIO(pTHX) |
79072805 | 1501 | { |
97aff369 | 1502 | dVAR; |
8990e307 | 1503 | GV *iogv; |
a45c7426 | 1504 | IO * const io = MUTABLE_IO(newSV_type(SVt_PVIO)); |
158623e7 NC |
1505 | /* This used to read SvREFCNT(io) = 1; |
1506 | It's not clear why the reference count needed an explicit reset. NWC | |
1507 | */ | |
1508 | assert (SvREFCNT(io) == 1); | |
8990e307 | 1509 | SvOBJECT_on(io); |
b464bac0 | 1510 | /* Clear the stashcache because a new IO could overrule a package name */ |
081fc587 | 1511 | hv_clear(PL_stashcache); |
71315bf2 | 1512 | iogv = gv_fetchpvs("FileHandle::", 0, SVt_PVHV); |
5f2d631d GS |
1513 | /* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */ |
1514 | if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv)))) | |
71315bf2 | 1515 | iogv = gv_fetchpvs("IO::Handle::", GV_ADD, SVt_PVHV); |
85fbaab2 | 1516 | SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv)))); |
79072805 LW |
1517 | return io; |
1518 | } | |
1519 | ||
1520 | void | |
1146e912 | 1521 | Perl_gv_check(pTHX_ const HV *stash) |
79072805 | 1522 | { |
97aff369 | 1523 | dVAR; |
79072805 | 1524 | register I32 i; |
463ee0b2 | 1525 | |
7918f24d NC |
1526 | PERL_ARGS_ASSERT_GV_CHECK; |
1527 | ||
8990e307 LW |
1528 | if (!HvARRAY(stash)) |
1529 | return; | |
a0d0e21e | 1530 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
e1ec3a88 | 1531 | const HE *entry; |
dc437b57 | 1532 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
b7787f18 AL |
1533 | register GV *gv; |
1534 | HV *hv; | |
dc437b57 | 1535 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && |
159b6efe | 1536 | (gv = MUTABLE_GV(HeVAL(entry))) && isGV(gv) && (hv = GvHV(gv))) |
a0d0e21e | 1537 | { |
19b6c847 | 1538 | if (hv != PL_defstash && hv != stash) |
a0d0e21e LW |
1539 | gv_check(hv); /* nested package */ |
1540 | } | |
dc437b57 | 1541 | else if (isALPHA(*HeKEY(entry))) { |
e1ec3a88 | 1542 | const char *file; |
159b6efe | 1543 | gv = MUTABLE_GV(HeVAL(entry)); |
55d729e4 | 1544 | if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv)) |
463ee0b2 | 1545 | continue; |
1d7c1841 | 1546 | file = GvFILE(gv); |
1d7c1841 GS |
1547 | CopLINE_set(PL_curcop, GvLINE(gv)); |
1548 | #ifdef USE_ITHREADS | |
dd374669 | 1549 | CopFILE(PL_curcop) = (char *)file; /* set for warning */ |
1d7c1841 | 1550 | #else |
9bde8eb0 NC |
1551 | CopFILEGV(PL_curcop) |
1552 | = gv_fetchfile_flags(file, HEK_LEN(GvFILE_HEK(gv)), 0); | |
1d7c1841 | 1553 | #endif |
9014280d | 1554 | Perl_warner(aTHX_ packWARN(WARN_ONCE), |
599cee73 | 1555 | "Name \"%s::%s\" used only once: possible typo", |
bfcb3514 | 1556 | HvNAME_get(stash), GvNAME(gv)); |
463ee0b2 | 1557 | } |
79072805 LW |
1558 | } |
1559 | } | |
1560 | } | |
1561 | ||
1562 | GV * | |
e1ec3a88 | 1563 | Perl_newGVgen(pTHX_ const char *pack) |
79072805 | 1564 | { |
97aff369 | 1565 | dVAR; |
7918f24d NC |
1566 | |
1567 | PERL_ARGS_ASSERT_NEWGVGEN; | |
1568 | ||
cea2e8a9 | 1569 | return gv_fetchpv(Perl_form(aTHX_ "%s::_GEN_%ld", pack, (long)PL_gensym++), |
6fd99bb3 | 1570 | GV_ADD, SVt_PVGV); |
79072805 LW |
1571 | } |
1572 | ||
1573 | /* hopefully this is only called on local symbol table entries */ | |
1574 | ||
1575 | GP* | |
864dbfa3 | 1576 | Perl_gp_ref(pTHX_ GP *gp) |
79072805 | 1577 | { |
97aff369 | 1578 | dVAR; |
1d7c1841 | 1579 | if (!gp) |
d4c19fe8 | 1580 | return NULL; |
79072805 | 1581 | gp->gp_refcnt++; |
44a8e56a | 1582 | if (gp->gp_cv) { |
1583 | if (gp->gp_cvgen) { | |
e1a479c5 BB |
1584 | /* If the GP they asked for a reference to contains |
1585 | a method cache entry, clear it first, so that we | |
1586 | don't infect them with our cached entry */ | |
44a8e56a | 1587 | SvREFCNT_dec(gp->gp_cv); |
601f1833 | 1588 | gp->gp_cv = NULL; |
44a8e56a | 1589 | gp->gp_cvgen = 0; |
1590 | } | |
44a8e56a | 1591 | } |
79072805 | 1592 | return gp; |
79072805 LW |
1593 | } |
1594 | ||
1595 | void | |
864dbfa3 | 1596 | Perl_gp_free(pTHX_ GV *gv) |
79072805 | 1597 | { |
97aff369 | 1598 | dVAR; |
79072805 LW |
1599 | GP* gp; |
1600 | ||
f7877b28 | 1601 | if (!gv || !isGV_with_GP(gv) || !(gp = GvGP(gv))) |
79072805 | 1602 | return; |
f248d071 GS |
1603 | if (gp->gp_refcnt == 0) { |
1604 | if (ckWARN_d(WARN_INTERNAL)) | |
9014280d | 1605 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
1606 | "Attempt to free unreferenced glob pointers" |
1607 | pTHX__FORMAT pTHX__VALUE); | |
79072805 LW |
1608 | return; |
1609 | } | |
748a9306 LW |
1610 | if (--gp->gp_refcnt > 0) { |
1611 | if (gp->gp_egv == gv) | |
1612 | gp->gp_egv = 0; | |
dd38834b | 1613 | GvGP(gv) = 0; |
79072805 | 1614 | return; |
748a9306 | 1615 | } |
79072805 | 1616 | |
c9ce39a9 RGS |
1617 | if (gp->gp_file_hek) |
1618 | unshare_hek(gp->gp_file_hek); | |
c9da69fb AL |
1619 | SvREFCNT_dec(gp->gp_sv); |
1620 | SvREFCNT_dec(gp->gp_av); | |
bfcb3514 NC |
1621 | /* FIXME - another reference loop GV -> symtab -> GV ? |
1622 | Somehow gp->gp_hv can end up pointing at freed garbage. */ | |
1623 | if (gp->gp_hv && SvTYPE(gp->gp_hv) == SVt_PVHV) { | |
bfcb3514 NC |
1624 | const char *hvname = HvNAME_get(gp->gp_hv); |
1625 | if (PL_stashcache && hvname) | |
04fe65b0 | 1626 | (void)hv_delete(PL_stashcache, hvname, HvNAMELEN_get(gp->gp_hv), |
7423f6db | 1627 | G_DISCARD); |
bfcb3514 | 1628 | SvREFCNT_dec(gp->gp_hv); |
13207a71 | 1629 | } |
c9da69fb AL |
1630 | SvREFCNT_dec(gp->gp_io); |
1631 | SvREFCNT_dec(gp->gp_cv); | |
1632 | SvREFCNT_dec(gp->gp_form); | |
748a9306 | 1633 | |
79072805 LW |
1634 | Safefree(gp); |
1635 | GvGP(gv) = 0; | |
1636 | } | |
1637 | ||
d460ef45 NIS |
1638 | int |
1639 | Perl_magic_freeovrld(pTHX_ SV *sv, MAGIC *mg) | |
1640 | { | |
53c1dcc0 AL |
1641 | AMT * const amtp = (AMT*)mg->mg_ptr; |
1642 | PERL_UNUSED_ARG(sv); | |
dd374669 | 1643 | |
7918f24d NC |
1644 | PERL_ARGS_ASSERT_MAGIC_FREEOVRLD; |
1645 | ||
d460ef45 NIS |
1646 | if (amtp && AMT_AMAGIC(amtp)) { |
1647 | int i; | |
1648 | for (i = 1; i < NofAMmeth; i++) { | |
53c1dcc0 | 1649 | CV * const cv = amtp->table[i]; |
b37c2d43 | 1650 | if (cv) { |
ad64d0ec | 1651 | SvREFCNT_dec(MUTABLE_SV(cv)); |
601f1833 | 1652 | amtp->table[i] = NULL; |
d460ef45 NIS |
1653 | } |
1654 | } | |
1655 | } | |
1656 | return 0; | |
1657 | } | |
1658 | ||
a0d0e21e LW |
1659 | /* Updates and caches the CV's */ |
1660 | ||
1661 | bool | |
864dbfa3 | 1662 | Perl_Gv_AMupdate(pTHX_ HV *stash) |
a0d0e21e | 1663 | { |
97aff369 | 1664 | dVAR; |
ad64d0ec | 1665 | MAGIC* const mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table); |
a6006777 | 1666 | AMT amt; |
9b439311 | 1667 | const struct mro_meta* stash_meta = HvMROMETA(stash); |
e1a479c5 | 1668 | U32 newgen; |
a0d0e21e | 1669 | |
7918f24d NC |
1670 | PERL_ARGS_ASSERT_GV_AMUPDATE; |
1671 | ||
9b439311 | 1672 | newgen = PL_sub_generation + stash_meta->pkg_gen + stash_meta->cache_gen; |
14899595 NC |
1673 | if (mg) { |
1674 | const AMT * const amtp = (AMT*)mg->mg_ptr; | |
1675 | if (amtp->was_ok_am == PL_amagic_generation | |
e1a479c5 | 1676 | && amtp->was_ok_sub == newgen) { |
14899595 NC |
1677 | return (bool)AMT_OVERLOADED(amtp); |
1678 | } | |
ad64d0ec | 1679 | sv_unmagic(MUTABLE_SV(stash), PERL_MAGIC_overload_table); |
14899595 | 1680 | } |
a0d0e21e | 1681 | |
bfcb3514 | 1682 | DEBUG_o( Perl_deb(aTHX_ "Recalcing overload magic in package %s\n",HvNAME_get(stash)) ); |
a0d0e21e | 1683 | |
d460ef45 | 1684 | Zero(&amt,1,AMT); |
3280af22 | 1685 | amt.was_ok_am = PL_amagic_generation; |
e1a479c5 | 1686 | amt.was_ok_sub = newgen; |
a6006777 | 1687 | amt.fallback = AMGfallNO; |
1688 | amt.flags = 0; | |
1689 | ||
a6006777 | 1690 | { |
32251b26 IZ |
1691 | int filled = 0, have_ovl = 0; |
1692 | int i, lim = 1; | |
a6006777 | 1693 | |
22c35a8c | 1694 | /* Work with "fallback" key, which we assume to be first in PL_AMG_names */ |
a6006777 | 1695 | |
89ffc314 | 1696 | /* Try to find via inheritance. */ |
53c1dcc0 AL |
1697 | GV *gv = gv_fetchmeth(stash, PL_AMG_names[0], 2, -1); |
1698 | SV * const sv = gv ? GvSV(gv) : NULL; | |
1699 | CV* cv; | |
89ffc314 IZ |
1700 | |
1701 | if (!gv) | |
32251b26 | 1702 | lim = DESTROY_amg; /* Skip overloading entries. */ |
c69033f2 NC |
1703 | #ifdef PERL_DONT_CREATE_GVSV |
1704 | else if (!sv) { | |
6f207bd3 | 1705 | NOOP; /* Equivalent to !SvTRUE and !SvOK */ |
c69033f2 NC |
1706 | } |
1707 | #endif | |
89ffc314 IZ |
1708 | else if (SvTRUE(sv)) |
1709 | amt.fallback=AMGfallYES; | |
1710 | else if (SvOK(sv)) | |
1711 | amt.fallback=AMGfallNEVER; | |
a6006777 | 1712 | |
32251b26 | 1713 | for (i = 1; i < lim; i++) |
601f1833 | 1714 | amt.table[i] = NULL; |
32251b26 | 1715 | for (; i < NofAMmeth; i++) { |
6136c704 | 1716 | const char * const cooky = PL_AMG_names[i]; |
32251b26 | 1717 | /* Human-readable form, for debugging: */ |
6136c704 | 1718 | const char * const cp = (i >= DESTROY_amg ? cooky : AMG_id2name(i)); |
d279ab82 | 1719 | const STRLEN l = PL_AMG_namelens[i]; |
89ffc314 | 1720 | |
a0288114 | 1721 | DEBUG_o( Perl_deb(aTHX_ "Checking overloading of \"%s\" in package \"%.256s\"\n", |
bfcb3514 | 1722 | cp, HvNAME_get(stash)) ); |
611c1e95 IZ |
1723 | /* don't fill the cache while looking up! |
1724 | Creation of inheritance stubs in intermediate packages may | |
1725 | conflict with the logic of runtime method substitution. | |
1726 | Indeed, for inheritance A -> B -> C, if C overloads "+0", | |
1727 | then we could have created stubs for "(+0" in A and C too. | |
1728 | But if B overloads "bool", we may want to use it for | |
1729 | numifying instead of C's "+0". */ | |
1730 | if (i >= DESTROY_amg) | |
1731 | gv = Perl_gv_fetchmeth_autoload(aTHX_ stash, cooky, l, 0); | |
1732 | else /* Autoload taken care of below */ | |
1733 | gv = Perl_gv_fetchmeth(aTHX_ stash, cooky, l, -1); | |
46fc3d4c | 1734 | cv = 0; |
89ffc314 | 1735 | if (gv && (cv = GvCV(gv))) { |
bfcb3514 | 1736 | const char *hvname; |
44a8e56a | 1737 | if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil") |
bfcb3514 | 1738 | && strEQ(hvname = HvNAME_get(GvSTASH(CvGV(cv))), "overload")) { |
611c1e95 IZ |
1739 | /* This is a hack to support autoloading..., while |
1740 | knowing *which* methods were declared as overloaded. */ | |
44a8e56a | 1741 | /* GvSV contains the name of the method. */ |
6136c704 | 1742 | GV *ngv = NULL; |
c69033f2 | 1743 | SV *gvsv = GvSV(gv); |
a0288114 AL |
1744 | |
1745 | DEBUG_o( Perl_deb(aTHX_ "Resolving method \"%"SVf256\ | |
1746 | "\" for overloaded \"%s\" in package \"%.256s\"\n", | |
ca0270c4 | 1747 | (void*)GvSV(gv), cp, hvname) ); |
c69033f2 NC |
1748 | if (!gvsv || !SvPOK(gvsv) |
1749 | || !(ngv = gv_fetchmethod_autoload(stash, SvPVX_const(gvsv), | |
dc848c6f | 1750 | FALSE))) |
1751 | { | |
a0288114 | 1752 | /* Can be an import stub (created by "can"). */ |
666ea192 | 1753 | const char * const name = (gvsv && SvPOK(gvsv)) ? SvPVX_const(gvsv) : "???"; |
a0288114 AL |
1754 | Perl_croak(aTHX_ "%s method \"%.256s\" overloading \"%s\" "\ |
1755 | "in package \"%.256s\"", | |
35c1215d NC |
1756 | (GvCVGEN(gv) ? "Stub found while resolving" |
1757 | : "Can't resolve"), | |
bfcb3514 | 1758 | name, cp, hvname); |
44a8e56a | 1759 | } |
dc848c6f | 1760 | cv = GvCV(gv = ngv); |
44a8e56a | 1761 | } |
b464bac0 | 1762 | DEBUG_o( Perl_deb(aTHX_ "Overloading \"%s\" in package \"%.256s\" via \"%.256s::%.256s\"\n", |
bfcb3514 | 1763 | cp, HvNAME_get(stash), HvNAME_get(GvSTASH(CvGV(cv))), |
44a8e56a | 1764 | GvNAME(CvGV(cv))) ); |
1765 | filled = 1; | |
32251b26 IZ |
1766 | if (i < DESTROY_amg) |
1767 | have_ovl = 1; | |
611c1e95 | 1768 | } else if (gv) { /* Autoloaded... */ |
ea726b52 | 1769 | cv = MUTABLE_CV(gv); |
611c1e95 | 1770 | filled = 1; |
44a8e56a | 1771 | } |
ea726b52 | 1772 | amt.table[i]=MUTABLE_CV(SvREFCNT_inc_simple(cv)); |
a0d0e21e | 1773 | } |
a0d0e21e | 1774 | if (filled) { |
a6006777 | 1775 | AMT_AMAGIC_on(&amt); |
32251b26 IZ |
1776 | if (have_ovl) |
1777 | AMT_OVERLOADED_on(&amt); | |
ad64d0ec | 1778 | sv_magic(MUTABLE_SV(stash), 0, PERL_MAGIC_overload_table, |
14befaf4 | 1779 | (char*)&amt, sizeof(AMT)); |
32251b26 | 1780 | return have_ovl; |
a0d0e21e LW |
1781 | } |
1782 | } | |
a6006777 | 1783 | /* Here we have no table: */ |
9cbac4c7 | 1784 | /* no_table: */ |
a6006777 | 1785 | AMT_AMAGIC_off(&amt); |
ad64d0ec | 1786 | sv_magic(MUTABLE_SV(stash), 0, PERL_MAGIC_overload_table, |
14befaf4 | 1787 | (char*)&amt, sizeof(AMTS)); |
a0d0e21e LW |
1788 | return FALSE; |
1789 | } | |
1790 | ||
32251b26 IZ |
1791 | |
1792 | CV* | |
1793 | Perl_gv_handler(pTHX_ HV *stash, I32 id) | |
1794 | { | |
97aff369 | 1795 | dVAR; |
3f8f4626 | 1796 | MAGIC *mg; |
32251b26 | 1797 | AMT *amtp; |
e1a479c5 | 1798 | U32 newgen; |
9b439311 | 1799 | struct mro_meta* stash_meta; |
32251b26 | 1800 | |
bfcb3514 | 1801 | if (!stash || !HvNAME_get(stash)) |
601f1833 | 1802 | return NULL; |
e1a479c5 | 1803 | |
9b439311 BB |
1804 | stash_meta = HvMROMETA(stash); |
1805 | newgen = PL_sub_generation + stash_meta->pkg_gen + stash_meta->cache_gen; | |
e1a479c5 | 1806 | |
ad64d0ec | 1807 | mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table); |
32251b26 IZ |
1808 | if (!mg) { |
1809 | do_update: | |
1810 | Gv_AMupdate(stash); | |
ad64d0ec | 1811 | mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table); |
32251b26 | 1812 | } |
a9fd4e40 | 1813 | assert(mg); |
32251b26 IZ |
1814 | amtp = (AMT*)mg->mg_ptr; |
1815 | if ( amtp->was_ok_am != PL_amagic_generation | |
e1a479c5 | 1816 | || amtp->was_ok_sub != newgen ) |
32251b26 | 1817 | goto do_update; |
3ad83ce7 | 1818 | if (AMT_AMAGIC(amtp)) { |
b7787f18 | 1819 | CV * const ret = amtp->table[id]; |
3ad83ce7 AMS |
1820 | if (ret && isGV(ret)) { /* Autoloading stab */ |
1821 | /* Passing it through may have resulted in a warning | |
1822 | "Inherited AUTOLOAD for a non-method deprecated", since | |
1823 | our caller is going through a function call, not a method call. | |
1824 | So return the CV for AUTOLOAD, setting $AUTOLOAD. */ | |
890ce7af | 1825 | GV * const gv = gv_fetchmethod(stash, PL_AMG_names[id]); |
3ad83ce7 AMS |
1826 | |
1827 | if (gv && GvCV(gv)) | |
1828 | return GvCV(gv); | |
1829 | } | |
1830 | return ret; | |
1831 | } | |
a0288114 | 1832 | |
601f1833 | 1833 | return NULL; |
32251b26 IZ |
1834 | } |
1835 | ||
1836 | ||
a0d0e21e | 1837 | SV* |
864dbfa3 | 1838 | Perl_amagic_call(pTHX_ SV *left, SV *right, int method, int flags) |
a0d0e21e | 1839 | { |
27da23d5 | 1840 | dVAR; |
b267980d | 1841 | MAGIC *mg; |
9c5ffd7c | 1842 | CV *cv=NULL; |
a0d0e21e | 1843 | CV **cvp=NULL, **ocvp=NULL; |
9c5ffd7c | 1844 | AMT *amtp=NULL, *oamtp=NULL; |
b464bac0 AL |
1845 | int off = 0, off1, lr = 0, notfound = 0; |
1846 | int postpr = 0, force_cpy = 0; | |
1847 | int assign = AMGf_assign & flags; | |
1848 | const int assignshift = assign ? 1 : 0; | |
497b47a8 JH |
1849 | #ifdef DEBUGGING |
1850 | int fl=0; | |
497b47a8 | 1851 | #endif |
25716404 | 1852 | HV* stash=NULL; |
7918f24d NC |
1853 | |
1854 | PERL_ARGS_ASSERT_AMAGIC_CALL; | |
1855 | ||
e46c382e YK |
1856 | if ( PL_curcop->cop_hints & HINT_NO_AMAGIC ) { |
1857 | SV *lex_mask = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, | |
1858 | 0, "overloading", 11, 0, 0); | |
1859 | ||
1860 | if ( !lex_mask || !SvOK(lex_mask) ) | |
1861 | /* overloading lexically disabled */ | |
1862 | return NULL; | |
1863 | else if ( lex_mask && SvPOK(lex_mask) ) { | |
1864 | /* we have an entry in the hints hash, check if method has been | |
1865 | * masked by overloading.pm */ | |
d15cd831 | 1866 | STRLEN len; |
e46c382e | 1867 | const int offset = method / 8; |
d87d3eed | 1868 | const int bit = method % 8; |
e46c382e YK |
1869 | char *pv = SvPV(lex_mask, len); |
1870 | ||
d15cd831 | 1871 | /* Bit set, so this overloading operator is disabled */ |
ed15e576 | 1872 | if ( (STRLEN)offset < len && pv[offset] & ( 1 << bit ) ) |
e46c382e YK |
1873 | return NULL; |
1874 | } | |
1875 | } | |
1876 | ||
a0d0e21e | 1877 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) |
25716404 | 1878 | && (stash = SvSTASH(SvRV(left))) |
ad64d0ec | 1879 | && (mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table)) |
b267980d | 1880 | && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
a6006777 | 1881 | ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table |
d4c19fe8 | 1882 | : NULL)) |
b267980d | 1883 | && ((cv = cvp[off=method+assignshift]) |
748a9306 LW |
1884 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to |
1885 | * usual method */ | |
497b47a8 JH |
1886 | ( |
1887 | #ifdef DEBUGGING | |
1888 | fl = 1, | |
a0288114 | 1889 | #endif |
497b47a8 | 1890 | cv = cvp[off=method])))) { |
a0d0e21e LW |
1891 | lr = -1; /* Call method for left argument */ |
1892 | } else { | |
1893 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { | |
1894 | int logic; | |
1895 | ||
1896 | /* look for substituted methods */ | |
ee239bfe | 1897 | /* In all the covered cases we should be called with assign==0. */ |
a0d0e21e LW |
1898 | switch (method) { |
1899 | case inc_amg: | |
ee239bfe IZ |
1900 | force_cpy = 1; |
1901 | if ((cv = cvp[off=add_ass_amg]) | |
1902 | || ((cv = cvp[off = add_amg]) && (force_cpy = 0, postpr = 1))) { | |
3280af22 | 1903 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1904 | } |
1905 | break; | |
1906 | case dec_amg: | |
ee239bfe IZ |
1907 | force_cpy = 1; |
1908 | if ((cv = cvp[off = subtr_ass_amg]) | |
1909 | || ((cv = cvp[off = subtr_amg]) && (force_cpy = 0, postpr=1))) { | |
3280af22 | 1910 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1911 | } |
1912 | break; | |
1913 | case bool__amg: | |
1914 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); | |
1915 | break; | |
1916 | case numer_amg: | |
1917 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); | |
1918 | break; | |
1919 | case string_amg: | |
1920 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); | |
1921 | break; | |
b7787f18 AL |
1922 | case not_amg: |
1923 | (void)((cv = cvp[off=bool__amg]) | |
1924 | || (cv = cvp[off=numer_amg]) | |
1925 | || (cv = cvp[off=string_amg])); | |
1926 | postpr = 1; | |
1927 | break; | |
748a9306 LW |
1928 | case copy_amg: |
1929 | { | |
76e3520e GS |
1930 | /* |
1931 | * SV* ref causes confusion with the interpreter variable of | |
1932 | * the same name | |
1933 | */ | |
890ce7af | 1934 | SV* const tmpRef=SvRV(left); |
76e3520e | 1935 | if (!SvROK(tmpRef) && SvTYPE(tmpRef) <= SVt_PVMG) { |
fc36a67e | 1936 | /* |
1937 | * Just to be extra cautious. Maybe in some | |
1938 | * additional cases sv_setsv is safe, too. | |
1939 | */ | |
890ce7af | 1940 | SV* const newref = newSVsv(tmpRef); |
748a9306 | 1941 | SvOBJECT_on(newref); |
96d4b0ee NC |
1942 | /* As a bit of a source compatibility hack, SvAMAGIC() and |
1943 | friends dereference an RV, to behave the same was as when | |
1944 | overloading was stored on the reference, not the referant. | |
1945 | Hence we can't use SvAMAGIC_on() | |
1946 | */ | |
1947 | SvFLAGS(newref) |= SVf_AMAGIC; | |
85fbaab2 | 1948 | SvSTASH_set(newref, MUTABLE_HV(SvREFCNT_inc(SvSTASH(tmpRef)))); |
748a9306 LW |
1949 | return newref; |
1950 | } | |
1951 | } | |
1952 | break; | |
a0d0e21e | 1953 | case abs_amg: |
b267980d | 1954 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e | 1955 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
890ce7af | 1956 | SV* const nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e | 1957 | if (off1==lt_amg) { |
890ce7af | 1958 | SV* const lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1959 | lt_amg,AMGf_noright); |
1960 | logic = SvTRUE(lessp); | |
1961 | } else { | |
890ce7af | 1962 | SV* const lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1963 | ncmp_amg,AMGf_noright); |
1964 | logic = (SvNV(lessp) < 0); | |
1965 | } | |
1966 | if (logic) { | |
1967 | if (off==subtr_amg) { | |
1968 | right = left; | |
748a9306 | 1969 | left = nullsv; |
a0d0e21e LW |
1970 | lr = 1; |
1971 | } | |
1972 | } else { | |
1973 | return left; | |
1974 | } | |
1975 | } | |
1976 | break; | |
1977 | case neg_amg: | |
155aba94 | 1978 | if ((cv = cvp[off=subtr_amg])) { |
a0d0e21e LW |
1979 | right = left; |
1980 | left = sv_2mortal(newSViv(0)); | |
1981 | lr = 1; | |
1982 | } | |
1983 | break; | |
f216259d | 1984 | case int_amg: |
f5284f61 | 1985 | case iter_amg: /* XXXX Eventually should do to_gv. */ |
b267980d NIS |
1986 | /* FAIL safe */ |
1987 | return NULL; /* Delegate operation to standard mechanisms. */ | |
1988 | break; | |
f5284f61 IZ |
1989 | case to_sv_amg: |
1990 | case to_av_amg: | |
1991 | case to_hv_amg: | |
1992 | case to_gv_amg: | |
1993 | case to_cv_amg: | |
1994 | /* FAIL safe */ | |
b267980d | 1995 | return left; /* Delegate operation to standard mechanisms. */ |
f5284f61 | 1996 | break; |
a0d0e21e LW |
1997 | default: |
1998 | goto not_found; | |
1999 | } | |
2000 | if (!cv) goto not_found; | |
2001 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) | |
25716404 | 2002 | && (stash = SvSTASH(SvRV(right))) |
ad64d0ec | 2003 | && (mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table)) |
b267980d | 2004 | && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
a6006777 | 2005 | ? (amtp = (AMT*)mg->mg_ptr)->table |
d4c19fe8 | 2006 | : NULL)) |
a0d0e21e LW |
2007 | && (cv = cvp[off=method])) { /* Method for right |
2008 | * argument found */ | |
2009 | lr=1; | |
b267980d NIS |
2010 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
2011 | && (cvp=ocvp) && (lr = -1)) | |
a0d0e21e LW |
2012 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
2013 | && !(flags & AMGf_unary)) { | |
2014 | /* We look for substitution for | |
2015 | * comparison operations and | |
fc36a67e | 2016 | * concatenation */ |
a0d0e21e LW |
2017 | if (method==concat_amg || method==concat_ass_amg |
2018 | || method==repeat_amg || method==repeat_ass_amg) { | |
2019 | return NULL; /* Delegate operation to string conversion */ | |
2020 | } | |
2021 | off = -1; | |
2022 | switch (method) { | |
2023 | case lt_amg: | |
2024 | case le_amg: | |
2025 | case gt_amg: | |
2026 | case ge_amg: | |
2027 | case eq_amg: | |
2028 | case ne_amg: | |
2029 | postpr = 1; off=ncmp_amg; break; | |
2030 | case slt_amg: | |
2031 | case sle_amg: | |
2032 | case sgt_amg: | |
2033 | case sge_amg: | |
2034 | case seq_amg: | |
2035 | case sne_amg: | |
2036 | postpr = 1; off=scmp_amg; break; | |
2037 | } | |
2038 | if (off != -1) cv = cvp[off]; | |
2039 | if (!cv) { | |
2040 | goto not_found; | |
2041 | } | |
2042 | } else { | |
a6006777 | 2043 | not_found: /* No method found, either report or croak */ |
b267980d | 2044 | switch (method) { |
d11ee47c RD |
2045 | case lt_amg: |
2046 | case le_amg: | |
2047 | case gt_amg: | |
2048 | case ge_amg: | |
2049 | case eq_amg: | |
2050 | case ne_amg: | |
2051 | case slt_amg: | |
2052 | case sle_amg: | |
2053 | case sgt_amg: | |
2054 | case sge_amg: | |
2055 | case seq_amg: | |
2056 | case sne_amg: | |
2057 | postpr = 0; break; | |
b267980d NIS |
2058 | case to_sv_amg: |
2059 | case to_av_amg: | |
2060 | case to_hv_amg: | |
2061 | case to_gv_amg: | |
2062 | case to_cv_amg: | |
2063 | /* FAIL safe */ | |
2064 | return left; /* Delegate operation to standard mechanisms. */ | |
2065 | break; | |
2066 | } | |
a0d0e21e LW |
2067 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
2068 | notfound = 1; lr = -1; | |
2069 | } else if (cvp && (cv=cvp[nomethod_amg])) { | |
2070 | notfound = 1; lr = 1; | |
4cc0ca18 NC |
2071 | } else if ((amtp && amtp->fallback >= AMGfallYES) && !DEBUG_o_TEST) { |
2072 | /* Skip generating the "no method found" message. */ | |
2073 | return NULL; | |
a0d0e21e | 2074 | } else { |
46fc3d4c | 2075 | SV *msg; |
774d564b | 2076 | if (off==-1) off=method; |
b267980d | 2077 | msg = sv_2mortal(Perl_newSVpvf(aTHX_ |
a0288114 | 2078 | "Operation \"%s\": no method found,%sargument %s%s%s%s", |
89ffc314 | 2079 | AMG_id2name(method + assignshift), |
e7ea3e70 | 2080 | (flags & AMGf_unary ? " " : "\n\tleft "), |
b267980d | 2081 | SvAMAGIC(left)? |
a0d0e21e LW |
2082 | "in overloaded package ": |
2083 | "has no overloaded magic", | |
b267980d | 2084 | SvAMAGIC(left)? |
bfcb3514 | 2085 | HvNAME_get(SvSTASH(SvRV(left))): |
a0d0e21e | 2086 | "", |
b267980d | 2087 | SvAMAGIC(right)? |
e7ea3e70 | 2088 | ",\n\tright argument in overloaded package ": |
b267980d | 2089 | (flags & AMGf_unary |
e7ea3e70 IZ |
2090 | ? "" |
2091 | : ",\n\tright argument has no overloaded magic"), | |
b267980d | 2092 | SvAMAGIC(right)? |
bfcb3514 | 2093 | HvNAME_get(SvSTASH(SvRV(right))): |
46fc3d4c | 2094 | "")); |
a0d0e21e | 2095 | if (amtp && amtp->fallback >= AMGfallYES) { |
b15aece3 | 2096 | DEBUG_o( Perl_deb(aTHX_ "%s", SvPVX_const(msg)) ); |
a0d0e21e | 2097 | } else { |
be2597df | 2098 | Perl_croak(aTHX_ "%"SVf, SVfARG(msg)); |
a0d0e21e LW |
2099 | } |
2100 | return NULL; | |
2101 | } | |
ee239bfe | 2102 | force_cpy = force_cpy || assign; |
a0d0e21e LW |
2103 | } |
2104 | } | |
497b47a8 | 2105 | #ifdef DEBUGGING |
a0d0e21e | 2106 | if (!notfound) { |
497b47a8 | 2107 | DEBUG_o(Perl_deb(aTHX_ |
a0288114 | 2108 | "Overloaded operator \"%s\"%s%s%s:\n\tmethod%s found%s in package %s%s\n", |
497b47a8 JH |
2109 | AMG_id2name(off), |
2110 | method+assignshift==off? "" : | |
a0288114 | 2111 | " (initially \"", |
497b47a8 JH |
2112 | method+assignshift==off? "" : |
2113 | AMG_id2name(method+assignshift), | |
a0288114 | 2114 | method+assignshift==off? "" : "\")", |
497b47a8 JH |
2115 | flags & AMGf_unary? "" : |
2116 | lr==1 ? " for right argument": " for left argument", | |
2117 | flags & AMGf_unary? " for argument" : "", | |
bfcb3514 | 2118 | stash ? HvNAME_get(stash) : "null", |
497b47a8 | 2119 | fl? ",\n\tassignment variant used": "") ); |
ee239bfe | 2120 | } |
497b47a8 | 2121 | #endif |
748a9306 LW |
2122 | /* Since we use shallow copy during assignment, we need |
2123 | * to dublicate the contents, probably calling user-supplied | |
2124 | * version of copy operator | |
2125 | */ | |
ee239bfe IZ |
2126 | /* We need to copy in following cases: |
2127 | * a) Assignment form was called. | |
2128 | * assignshift==1, assign==T, method + 1 == off | |
2129 | * b) Increment or decrement, called directly. | |
2130 | * assignshift==0, assign==0, method + 0 == off | |
2131 | * c) Increment or decrement, translated to assignment add/subtr. | |
b267980d | 2132 | * assignshift==0, assign==T, |
ee239bfe IZ |
2133 | * force_cpy == T |
2134 | * d) Increment or decrement, translated to nomethod. | |
b267980d | 2135 | * assignshift==0, assign==0, |
ee239bfe IZ |
2136 | * force_cpy == T |
2137 | * e) Assignment form translated to nomethod. | |
2138 | * assignshift==1, assign==T, method + 1 != off | |
2139 | * force_cpy == T | |
2140 | */ | |
2141 | /* off is method, method+assignshift, or a result of opcode substitution. | |
2142 | * In the latter case assignshift==0, so only notfound case is important. | |
2143 | */ | |
2144 | if (( (method + assignshift == off) | |
2145 | && (assign || (method == inc_amg) || (method == dec_amg))) | |
2146 | || force_cpy) | |
2147 | RvDEEPCP(left); | |
a0d0e21e LW |
2148 | { |
2149 | dSP; | |
2150 | BINOP myop; | |
2151 | SV* res; | |
b7787f18 | 2152 | const bool oldcatch = CATCH_GET; |
a0d0e21e | 2153 | |
54310121 | 2154 | CATCH_SET(TRUE); |
a0d0e21e LW |
2155 | Zero(&myop, 1, BINOP); |
2156 | myop.op_last = (OP *) &myop; | |
b37c2d43 | 2157 | myop.op_next = NULL; |
54310121 | 2158 | myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED; |
a0d0e21e | 2159 | |
e788e7d3 | 2160 | PUSHSTACKi(PERLSI_OVERLOAD); |
a0d0e21e | 2161 | ENTER; |
462e5cf6 | 2162 | SAVEOP(); |
533c011a | 2163 | PL_op = (OP *) &myop; |
3280af22 | 2164 | if (PERLDB_SUB && PL_curstash != PL_debstash) |
533c011a | 2165 | PL_op->op_private |= OPpENTERSUB_DB; |
a0d0e21e | 2166 | PUTBACK; |
cea2e8a9 | 2167 | pp_pushmark(); |
a0d0e21e | 2168 | |
924508f0 | 2169 | EXTEND(SP, notfound + 5); |
a0d0e21e LW |
2170 | PUSHs(lr>0? right: left); |
2171 | PUSHs(lr>0? left: right); | |
3280af22 | 2172 | PUSHs( lr > 0 ? &PL_sv_yes : ( assign ? &PL_sv_undef : &PL_sv_no )); |
a0d0e21e | 2173 | if (notfound) { |
59cd0e26 NC |
2174 | PUSHs(newSVpvn_flags(AMG_id2name(method + assignshift), |
2175 | AMG_id2namelen(method + assignshift), SVs_TEMP)); | |
a0d0e21e | 2176 | } |
ad64d0ec | 2177 | PUSHs(MUTABLE_SV(cv)); |
a0d0e21e LW |
2178 | PUTBACK; |
2179 | ||
139d0ce6 | 2180 | if ((PL_op = PL_ppaddr[OP_ENTERSUB](aTHX))) |
cea2e8a9 | 2181 | CALLRUNOPS(aTHX); |
a0d0e21e LW |
2182 | LEAVE; |
2183 | SPAGAIN; | |
2184 | ||
2185 | res=POPs; | |
ebafeae7 | 2186 | PUTBACK; |
d3acc0f7 | 2187 | POPSTACK; |
54310121 | 2188 | CATCH_SET(oldcatch); |
a0d0e21e | 2189 | |
a0d0e21e | 2190 | if (postpr) { |
b7787f18 | 2191 | int ans; |
a0d0e21e LW |
2192 | switch (method) { |
2193 | case le_amg: | |
2194 | case sle_amg: | |
2195 | ans=SvIV(res)<=0; break; | |
2196 | case lt_amg: | |
2197 | case slt_amg: | |
2198 | ans=SvIV(res)<0; break; | |
2199 | case ge_amg: | |
2200 | case sge_amg: | |
2201 | ans=SvIV(res)>=0; break; | |
2202 | case gt_amg: | |
2203 | case sgt_amg: | |
2204 | ans=SvIV(res)>0; break; | |
2205 | case eq_amg: | |
2206 | case seq_amg: | |
2207 | ans=SvIV(res)==0; break; | |
2208 | case ne_amg: | |
2209 | case sne_amg: | |
2210 | ans=SvIV(res)!=0; break; | |
2211 | case inc_amg: | |
2212 | case dec_amg: | |
bbce6d69 | 2213 | SvSetSV(left,res); return left; |
dc437b57 | 2214 | case not_amg: |
fe7ac86a | 2215 | ans=!SvTRUE(res); break; |
b7787f18 AL |
2216 | default: |
2217 | ans=0; break; | |
a0d0e21e | 2218 | } |
54310121 | 2219 | return boolSV(ans); |
748a9306 LW |
2220 | } else if (method==copy_amg) { |
2221 | if (!SvROK(res)) { | |
cea2e8a9 | 2222 | Perl_croak(aTHX_ "Copy method did not return a reference"); |
748a9306 LW |
2223 | } |
2224 | return SvREFCNT_inc(SvRV(res)); | |
a0d0e21e LW |
2225 | } else { |
2226 | return res; | |
2227 | } | |
2228 | } | |
2229 | } | |
c9d5ac95 GS |
2230 | |
2231 | /* | |
7fc63493 | 2232 | =for apidoc is_gv_magical_sv |
c9d5ac95 GS |
2233 | |
2234 | Returns C<TRUE> if given the name of a magical GV. | |
2235 | ||
2236 | Currently only useful internally when determining if a GV should be | |
2237 | created even in rvalue contexts. | |
2238 | ||
2239 | C<flags> is not used at present but available for future extension to | |
2240 | allow selecting particular classes of magical variable. | |
2241 | ||
b9b0e72c NC |
2242 | Currently assumes that C<name> is NUL terminated (as well as len being valid). |
2243 | This assumption is met by all callers within the perl core, which all pass | |
2244 | pointers returned by SvPV. | |
2245 | ||
c9d5ac95 GS |
2246 | =cut |
2247 | */ | |
9d8f40c4 | 2248 | |
c9d5ac95 | 2249 | bool |
9d8f40c4 | 2250 | Perl_is_gv_magical_sv(pTHX_ SV *const name_sv, U32 flags) |
c9d5ac95 | 2251 | { |
9d8f40c4 NC |
2252 | STRLEN len; |
2253 | const char *const name = SvPV_const(name_sv, len); | |
9d4ba2ae | 2254 | |
9d8f40c4 NC |
2255 | PERL_UNUSED_ARG(flags); |
2256 | PERL_ARGS_ASSERT_IS_GV_MAGICAL_SV; | |
7918f24d | 2257 | |
b9b0e72c | 2258 | if (len > 1) { |
b464bac0 | 2259 | const char * const name1 = name + 1; |
b9b0e72c NC |
2260 | switch (*name) { |
2261 | case 'I': | |
f2df7081 | 2262 | if (len == 3 && name[1] == 'S' && name[2] == 'A') |
b9b0e72c NC |
2263 | goto yes; |
2264 | break; | |
2265 | case 'O': | |
9431620d | 2266 | if (len == 8 && strEQ(name1, "VERLOAD")) |
b9b0e72c NC |
2267 | goto yes; |
2268 | break; | |
2269 | case 'S': | |
9431620d | 2270 | if (len == 3 && name[1] == 'I' && name[2] == 'G') |
b9b0e72c NC |
2271 | goto yes; |
2272 | break; | |
2273 | /* Using ${^...} variables is likely to be sufficiently rare that | |
2274 | it seems sensible to avoid the space hit of also checking the | |
2275 | length. */ | |
2276 | case '\017': /* ${^OPEN} */ | |
9431620d | 2277 | if (strEQ(name1, "PEN")) |
b9b0e72c NC |
2278 | goto yes; |
2279 | break; | |
2280 | case '\024': /* ${^TAINT} */ | |
9431620d | 2281 | if (strEQ(name1, "AINT")) |
b9b0e72c NC |
2282 | goto yes; |
2283 | break; | |
2284 | case '\025': /* ${^UNICODE} */ | |
9431620d | 2285 | if (strEQ(name1, "NICODE")) |
b9b0e72c | 2286 | goto yes; |
a0288114 | 2287 | if (strEQ(name1, "TF8LOCALE")) |
7cebcbc0 | 2288 | goto yes; |
b9b0e72c NC |
2289 | break; |
2290 | case '\027': /* ${^WARNING_BITS} */ | |
9431620d | 2291 | if (strEQ(name1, "ARNING_BITS")) |
b9b0e72c NC |
2292 | goto yes; |
2293 | break; | |
2294 | case '1': | |
2295 | case '2': | |
2296 | case '3': | |
2297 | case '4': | |
2298 | case '5': | |
2299 | case '6': | |
2300 | case '7': | |
2301 | case '8': | |
2302 | case '9': | |
c9d5ac95 | 2303 | { |
7fc63493 | 2304 | const char *end = name + len; |
c9d5ac95 GS |
2305 | while (--end > name) { |
2306 | if (!isDIGIT(*end)) | |
2307 | return FALSE; | |
2308 | } | |
b9b0e72c NC |
2309 | goto yes; |
2310 | } | |
2311 | } | |
2312 | } else { | |
2313 | /* Because we're already assuming that name is NUL terminated | |
2314 | below, we can treat an empty name as "\0" */ | |
2315 | switch (*name) { | |
2316 | case '&': | |
2317 | case '`': | |
2318 | case '\'': | |
2319 | case ':': | |
2320 | case '?': | |
2321 | case '!': | |
2322 | case '-': | |
2323 | case '#': | |
2324 | case '[': | |
2325 | case '^': | |
2326 | case '~': | |
2327 | case '=': | |
2328 | case '%': | |
2329 | case '.': | |
2330 | case '(': | |
2331 | case ')': | |
2332 | case '<': | |
2333 | case '>': | |
b9b0e72c NC |
2334 | case '\\': |
2335 | case '/': | |
2336 | case '|': | |
2337 | case '+': | |
2338 | case ';': | |
2339 | case ']': | |
2340 | case '\001': /* $^A */ | |
2341 | case '\003': /* $^C */ | |
2342 | case '\004': /* $^D */ | |
2343 | case '\005': /* $^E */ | |
2344 | case '\006': /* $^F */ | |
2345 | case '\010': /* $^H */ | |
2346 | case '\011': /* $^I, NOT \t in EBCDIC */ | |
2347 | case '\014': /* $^L */ | |
2348 | case '\016': /* $^N */ | |
2349 | case '\017': /* $^O */ | |
2350 | case '\020': /* $^P */ | |
2351 | case '\023': /* $^S */ | |
2352 | case '\024': /* $^T */ | |
2353 | case '\026': /* $^V */ | |
2354 | case '\027': /* $^W */ | |
2355 | case '1': | |
2356 | case '2': | |
2357 | case '3': | |
2358 | case '4': | |
2359 | case '5': | |
2360 | case '6': | |
2361 | case '7': | |
2362 | case '8': | |
2363 | case '9': | |
2364 | yes: | |
2365 | return TRUE; | |
2366 | default: | |
2367 | break; | |
c9d5ac95 | 2368 | } |
c9d5ac95 GS |
2369 | } |
2370 | return FALSE; | |
2371 | } | |
66610fdd | 2372 | |
f5c1e807 NC |
2373 | void |
2374 | Perl_gv_name_set(pTHX_ GV *gv, const char *name, U32 len, U32 flags) | |
2375 | { | |
2376 | dVAR; | |
acda4c6a | 2377 | U32 hash; |
f5c1e807 | 2378 | |
7918f24d | 2379 | PERL_ARGS_ASSERT_GV_NAME_SET; |
f5c1e807 NC |
2380 | PERL_UNUSED_ARG(flags); |
2381 | ||
acda4c6a NC |
2382 | if (len > I32_MAX) |
2383 | Perl_croak(aTHX_ "panic: gv name too long (%"UVuf")", (UV) len); | |
2384 | ||
ae8cc45f NC |
2385 | if (!(flags & GV_ADD) && GvNAME_HEK(gv)) { |
2386 | unshare_hek(GvNAME_HEK(gv)); | |
2387 | } | |
2388 | ||
acda4c6a | 2389 | PERL_HASH(hash, name, len); |
9f616d01 | 2390 | GvNAME_HEK(gv) = share_hek(name, len, hash); |
f5c1e807 NC |
2391 | } |
2392 | ||
66610fdd RGS |
2393 | /* |
2394 | * Local variables: | |
2395 | * c-indentation-style: bsd | |
2396 | * c-basic-offset: 4 | |
2397 | * indent-tabs-mode: t | |
2398 | * End: | |
2399 | * | |
37442d52 RGS |
2400 | * ex: set ts=8 sts=4 sw=4 noet: |
2401 | */ |