Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* gv.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
fdf8c088 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * 'Mercy!' cried Gandalf. 'If the giving of information is to be the cure | |
13 | * of your inquisitiveness, I shall spend all the rest of my days answering | |
14 | * you. What more do you want to know?' | |
15 | * 'The names of all the stars, and of all living things, and the whole | |
16 | * history of Middle-earth and Over-heaven and of the Sundering Seas,' | |
17 | * laughed Pippin. | |
79072805 LW |
18 | */ |
19 | ||
ccfc67b7 JH |
20 | /* |
21 | =head1 GV Functions | |
166f8a29 DM |
22 | |
23 | A GV is a structure which corresponds to to a Perl typeglob, ie *foo. | |
24 | It is a structure that holds a pointer to a scalar, an array, a hash etc, | |
25 | corresponding to $foo, @foo, %foo. | |
26 | ||
27 | GVs are usually found as values in stashes (symbol table hashes) where | |
28 | Perl stores its global variables. | |
29 | ||
30 | =cut | |
ccfc67b7 JH |
31 | */ |
32 | ||
79072805 | 33 | #include "EXTERN.h" |
864dbfa3 | 34 | #define PERL_IN_GV_C |
79072805 | 35 | #include "perl.h" |
8261f8eb | 36 | #include "overload.c" |
79072805 | 37 | |
f54cb97a AL |
38 | static const char S_autoload[] = "AUTOLOAD"; |
39 | static const STRLEN S_autolen = sizeof(S_autoload)-1; | |
5c7983e5 | 40 | |
c69033f2 NC |
41 | |
42 | #ifdef PERL_DONT_CREATE_GVSV | |
43 | GV * | |
44 | Perl_gv_SVadd(pTHX_ GV *gv) | |
45 | { | |
46 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) | |
47 | Perl_croak(aTHX_ "Bad symbol for scalar"); | |
48 | if (!GvSV(gv)) | |
561b68a9 | 49 | GvSV(gv) = newSV(0); |
c69033f2 NC |
50 | return gv; |
51 | } | |
52 | #endif | |
53 | ||
79072805 | 54 | GV * |
864dbfa3 | 55 | Perl_gv_AVadd(pTHX_ register GV *gv) |
79072805 | 56 | { |
a0d0e21e | 57 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
cea2e8a9 | 58 | Perl_croak(aTHX_ "Bad symbol for array"); |
79072805 LW |
59 | if (!GvAV(gv)) |
60 | GvAV(gv) = newAV(); | |
61 | return gv; | |
62 | } | |
63 | ||
64 | GV * | |
864dbfa3 | 65 | Perl_gv_HVadd(pTHX_ register GV *gv) |
79072805 | 66 | { |
a0d0e21e | 67 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
cea2e8a9 | 68 | Perl_croak(aTHX_ "Bad symbol for hash"); |
79072805 | 69 | if (!GvHV(gv)) |
463ee0b2 | 70 | GvHV(gv) = newHV(); |
79072805 LW |
71 | return gv; |
72 | } | |
73 | ||
74 | GV * | |
864dbfa3 | 75 | Perl_gv_IOadd(pTHX_ register GV *gv) |
a0d0e21e | 76 | { |
97aff369 | 77 | dVAR; |
8b5be85c SP |
78 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) { |
79 | ||
80 | /* | |
81 | * if it walks like a dirhandle, then let's assume that | |
82 | * this is a dirhandle. | |
83 | */ | |
b37c2d43 | 84 | const char * const fh = |
666ea192 JH |
85 | PL_op->op_type == OP_READDIR || |
86 | PL_op->op_type == OP_TELLDIR || | |
87 | PL_op->op_type == OP_SEEKDIR || | |
88 | PL_op->op_type == OP_REWINDDIR || | |
89 | PL_op->op_type == OP_CLOSEDIR ? | |
90 | "dirhandle" : "filehandle"; | |
8b5be85c SP |
91 | Perl_croak(aTHX_ "Bad symbol for %s", fh); |
92 | } | |
93 | ||
5bd07a3d | 94 | if (!GvIOp(gv)) { |
7fb37951 AMS |
95 | #ifdef GV_UNIQUE_CHECK |
96 | if (GvUNIQUE(gv)) { | |
97 | Perl_croak(aTHX_ "Bad symbol for filehandle (GV is unique)"); | |
5bd07a3d DM |
98 | } |
99 | #endif | |
a0d0e21e | 100 | GvIOp(gv) = newIO(); |
5bd07a3d | 101 | } |
a0d0e21e LW |
102 | return gv; |
103 | } | |
104 | ||
105 | GV * | |
864dbfa3 | 106 | Perl_gv_fetchfile(pTHX_ const char *name) |
79072805 | 107 | { |
d9095cec NC |
108 | return gv_fetchfile_flags(name, strlen(name), 0); |
109 | } | |
110 | ||
111 | GV * | |
112 | Perl_gv_fetchfile_flags(pTHX_ const char *const name, const STRLEN namelen, | |
113 | const U32 flags) | |
114 | { | |
97aff369 | 115 | dVAR; |
4116122e | 116 | char smallbuf[128]; |
53d95988 | 117 | char *tmpbuf; |
d9095cec | 118 | const STRLEN tmplen = namelen + 2; |
79072805 LW |
119 | GV *gv; |
120 | ||
d9095cec NC |
121 | PERL_UNUSED_ARG(flags); |
122 | ||
1d7c1841 | 123 | if (!PL_defstash) |
a0714e2c | 124 | return NULL; |
1d7c1841 | 125 | |
d9095cec | 126 | if (tmplen <= sizeof smallbuf) |
53d95988 CS |
127 | tmpbuf = smallbuf; |
128 | else | |
798b63bc | 129 | Newx(tmpbuf, tmplen, char); |
0ac0412a | 130 | /* This is where the debugger's %{"::_<$filename"} hash is created */ |
53d95988 CS |
131 | tmpbuf[0] = '_'; |
132 | tmpbuf[1] = '<'; | |
d9095cec NC |
133 | memcpy(tmpbuf + 2, name, namelen); |
134 | gv = *(GV**)hv_fetch(PL_defstash, tmpbuf, tmplen, TRUE); | |
1d7c1841 | 135 | if (!isGV(gv)) { |
d9095cec | 136 | gv_init(gv, PL_defstash, tmpbuf, tmplen, FALSE); |
c69033f2 | 137 | #ifdef PERL_DONT_CREATE_GVSV |
d9095cec | 138 | GvSV(gv) = newSVpvn(name, namelen); |
c69033f2 | 139 | #else |
d9095cec | 140 | sv_setpvn(GvSV(gv), name, namelen); |
c69033f2 | 141 | #endif |
1d7c1841 | 142 | if (PERLDB_LINE) |
a0714e2c | 143 | hv_magic(GvHVn(gv_AVadd(gv)), NULL, PERL_MAGIC_dbfile); |
1d7c1841 | 144 | } |
53d95988 CS |
145 | if (tmpbuf != smallbuf) |
146 | Safefree(tmpbuf); | |
79072805 LW |
147 | return gv; |
148 | } | |
149 | ||
62d55b22 NC |
150 | /* |
151 | =for apidoc gv_const_sv | |
152 | ||
153 | If C<gv> is a typeglob whose subroutine entry is a constant sub eligible for | |
154 | inlining, or C<gv> is a placeholder reference that would be promoted to such | |
155 | a typeglob, then returns the value returned by the sub. Otherwise, returns | |
156 | NULL. | |
157 | ||
158 | =cut | |
159 | */ | |
160 | ||
161 | SV * | |
162 | Perl_gv_const_sv(pTHX_ GV *gv) | |
163 | { | |
164 | if (SvTYPE(gv) == SVt_PVGV) | |
165 | return cv_const_sv(GvCVu(gv)); | |
166 | return SvROK(gv) ? SvRV(gv) : NULL; | |
167 | } | |
168 | ||
12816592 NC |
169 | GP * |
170 | Perl_newGP(pTHX_ GV *const gv) | |
171 | { | |
172 | GP *gp; | |
19bad673 NC |
173 | U32 hash; |
174 | #ifdef USE_ITHREADS | |
1df5f7c1 NC |
175 | const char *const file |
176 | = (PL_curcop && CopFILE(PL_curcop)) ? CopFILE(PL_curcop) : ""; | |
19bad673 NC |
177 | const STRLEN len = strlen(file); |
178 | #else | |
179 | SV *const temp_sv = CopFILESV(PL_curcop); | |
180 | const char *file; | |
181 | STRLEN len; | |
182 | ||
183 | if (temp_sv) { | |
184 | file = SvPVX(temp_sv); | |
185 | len = SvCUR(temp_sv); | |
186 | } else { | |
187 | file = ""; | |
188 | len = 0; | |
189 | } | |
190 | #endif | |
f4890806 NC |
191 | |
192 | PERL_HASH(hash, file, len); | |
193 | ||
12816592 NC |
194 | Newxz(gp, 1, GP); |
195 | ||
196 | #ifndef PERL_DONT_CREATE_GVSV | |
b5c2dcb8 | 197 | gp->gp_sv = newSV(0); |
12816592 NC |
198 | #endif |
199 | ||
1df5f7c1 | 200 | gp->gp_line = PL_curcop ? CopLINE(PL_curcop) : 0; |
12816592 NC |
201 | /* XXX Ideally this cast would be replaced with a change to const char* |
202 | in the struct. */ | |
f4890806 | 203 | gp->gp_file_hek = share_hek(file, len, hash); |
12816592 NC |
204 | gp->gp_egv = gv; |
205 | gp->gp_refcnt = 1; | |
206 | ||
207 | return gp; | |
208 | } | |
209 | ||
463ee0b2 | 210 | void |
864dbfa3 | 211 | Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi) |
463ee0b2 | 212 | { |
27da23d5 | 213 | dVAR; |
3b6733bf NC |
214 | const U32 old_type = SvTYPE(gv); |
215 | const bool doproto = old_type > SVt_NULL; | |
024963f8 | 216 | char * const proto = (doproto && SvPOK(gv)) ? SvPVX(gv) : NULL; |
49a54bbe | 217 | const STRLEN protolen = proto ? SvCUR(gv) : 0; |
756cb477 | 218 | SV *const has_constant = doproto && SvROK(gv) ? SvRV(gv) : NULL; |
1ccdb730 | 219 | const U32 exported_constant = has_constant ? SvPCS_IMPORTED(gv) : 0; |
756cb477 NC |
220 | |
221 | assert (!(proto && has_constant)); | |
222 | ||
223 | if (has_constant) { | |
5c1f4d79 NC |
224 | /* The constant has to be a simple scalar type. */ |
225 | switch (SvTYPE(has_constant)) { | |
226 | case SVt_PVAV: | |
227 | case SVt_PVHV: | |
228 | case SVt_PVCV: | |
229 | case SVt_PVFM: | |
230 | case SVt_PVIO: | |
231 | Perl_croak(aTHX_ "Cannot convert a reference to %s to typeglob", | |
232 | sv_reftype(has_constant, 0)); | |
42d0e0b7 | 233 | default: NOOP; |
5c1f4d79 | 234 | } |
756cb477 NC |
235 | SvRV_set(gv, NULL); |
236 | SvROK_off(gv); | |
237 | } | |
463ee0b2 | 238 | |
3b6733bf NC |
239 | |
240 | if (old_type < SVt_PVGV) { | |
241 | if (old_type >= SVt_PV) | |
242 | SvCUR_set(gv, 0); | |
243 | sv_upgrade((SV*)gv, SVt_PVGV); | |
244 | } | |
55d729e4 GS |
245 | if (SvLEN(gv)) { |
246 | if (proto) { | |
f880fe2f | 247 | SvPV_set(gv, NULL); |
b162af07 | 248 | SvLEN_set(gv, 0); |
55d729e4 GS |
249 | SvPOK_off(gv); |
250 | } else | |
94010e71 | 251 | Safefree(SvPVX_mutable(gv)); |
55d729e4 | 252 | } |
2e5b91de NC |
253 | SvIOK_off(gv); |
254 | isGV_with_GP_on(gv); | |
12816592 NC |
255 | |
256 | GvGP(gv) = Perl_newGP(aTHX_ gv); | |
e15faf7d NC |
257 | GvSTASH(gv) = stash; |
258 | if (stash) | |
259 | Perl_sv_add_backref(aTHX_ (SV*)stash, (SV*)gv); | |
ae8cc45f | 260 | gv_name_set(gv, name, len, GV_ADD); |
23ad5bf5 | 261 | if (multi || doproto) /* doproto means it _was_ mentioned */ |
a5f75d66 | 262 | GvMULTI_on(gv); |
55d729e4 GS |
263 | if (doproto) { /* Replicate part of newSUB here. */ |
264 | ENTER; | |
756cb477 NC |
265 | if (has_constant) { |
266 | /* newCONSTSUB takes ownership of the reference from us. */ | |
267 | GvCV(gv) = newCONSTSUB(stash, name, has_constant); | |
1ccdb730 NC |
268 | /* If this reference was a copy of another, then the subroutine |
269 | must have been "imported", by a Perl space assignment to a GV | |
270 | from a reference to CV. */ | |
271 | if (exported_constant) | |
272 | GvIMPORTED_CV_on(gv); | |
756cb477 | 273 | } else { |
756cb477 NC |
274 | (void) start_subparse(0,0); /* Create empty CV in compcv. */ |
275 | GvCV(gv) = PL_compcv; | |
276 | } | |
55d729e4 GS |
277 | LEAVE; |
278 | ||
e1a479c5 | 279 | mro_method_changed_in(GvSTASH(gv)); /* sub Foo::bar($) { (shift) } sub ASDF::baz($); *ASDF::baz = \&Foo::bar */ |
65c50114 | 280 | CvGV(GvCV(gv)) = gv; |
e0d088d0 | 281 | CvFILE_set_from_cop(GvCV(gv), PL_curcop); |
3280af22 | 282 | CvSTASH(GvCV(gv)) = PL_curstash; |
55d729e4 | 283 | if (proto) { |
49a54bbe NC |
284 | sv_usepvn_flags((SV*)GvCV(gv), proto, protolen, |
285 | SV_HAS_TRAILING_NUL); | |
55d729e4 GS |
286 | } |
287 | } | |
463ee0b2 LW |
288 | } |
289 | ||
76e3520e | 290 | STATIC void |
cea2e8a9 | 291 | S_gv_init_sv(pTHX_ GV *gv, I32 sv_type) |
a0d0e21e LW |
292 | { |
293 | switch (sv_type) { | |
294 | case SVt_PVIO: | |
295 | (void)GvIOn(gv); | |
296 | break; | |
297 | case SVt_PVAV: | |
298 | (void)GvAVn(gv); | |
299 | break; | |
300 | case SVt_PVHV: | |
301 | (void)GvHVn(gv); | |
302 | break; | |
c69033f2 NC |
303 | #ifdef PERL_DONT_CREATE_GVSV |
304 | case SVt_NULL: | |
305 | case SVt_PVCV: | |
306 | case SVt_PVFM: | |
e654831b | 307 | case SVt_PVGV: |
c69033f2 NC |
308 | break; |
309 | default: | |
dbdce04c NC |
310 | if(GvSVn(gv)) { |
311 | /* Work round what appears to be a bug in Sun C++ 5.8 2005/10/13 | |
312 | If we just cast GvSVn(gv) to void, it ignores evaluating it for | |
313 | its side effect */ | |
314 | } | |
c69033f2 | 315 | #endif |
a0d0e21e LW |
316 | } |
317 | } | |
318 | ||
954c1994 GS |
319 | /* |
320 | =for apidoc gv_fetchmeth | |
321 | ||
322 | Returns the glob with the given C<name> and a defined subroutine or | |
323 | C<NULL>. The glob lives in the given C<stash>, or in the stashes | |
07766739 | 324 | accessible via @ISA and UNIVERSAL::. |
954c1994 GS |
325 | |
326 | The argument C<level> should be either 0 or -1. If C<level==0>, as a | |
327 | side-effect creates a glob with the given C<name> in the given C<stash> | |
328 | which in the case of success contains an alias for the subroutine, and sets | |
e1a479c5 | 329 | up caching info for this glob. |
954c1994 GS |
330 | |
331 | This function grants C<"SUPER"> token as a postfix of the stash name. The | |
332 | GV returned from C<gv_fetchmeth> may be a method cache entry, which is not | |
4929bf7b | 333 | visible to Perl code. So when calling C<call_sv>, you should not use |
954c1994 | 334 | the GV directly; instead, you should use the method's CV, which can be |
b267980d | 335 | obtained from the GV with the C<GvCV> macro. |
954c1994 GS |
336 | |
337 | =cut | |
338 | */ | |
339 | ||
e1a479c5 BB |
340 | /* NOTE: No support for tied ISA */ |
341 | ||
79072805 | 342 | GV * |
864dbfa3 | 343 | Perl_gv_fetchmeth(pTHX_ HV *stash, const char *name, STRLEN len, I32 level) |
79072805 | 344 | { |
97aff369 | 345 | dVAR; |
463ee0b2 | 346 | GV** gvp; |
e1a479c5 BB |
347 | AV* linear_av; |
348 | SV** linear_svp; | |
349 | SV* linear_sv; | |
350 | HV* cstash; | |
351 | GV* candidate = NULL; | |
352 | CV* cand_cv = NULL; | |
353 | CV* old_cv; | |
354 | GV* topgv = NULL; | |
bfcb3514 | 355 | const char *hvname; |
e1a479c5 BB |
356 | I32 create = (level >= 0) ? 1 : 0; |
357 | I32 items; | |
358 | STRLEN packlen; | |
359 | U32 topgen_cmp; | |
a0d0e21e | 360 | |
af09ea45 IK |
361 | /* UNIVERSAL methods should be callable without a stash */ |
362 | if (!stash) { | |
e1a479c5 | 363 | create = 0; /* probably appropriate */ |
da51bb9b | 364 | if(!(stash = gv_stashpvs("UNIVERSAL", 0))) |
af09ea45 IK |
365 | return 0; |
366 | } | |
367 | ||
e1a479c5 BB |
368 | assert(stash); |
369 | ||
bfcb3514 NC |
370 | hvname = HvNAME_get(stash); |
371 | if (!hvname) | |
e1a479c5 | 372 | Perl_croak(aTHX_ "Can't use anonymous symbol table for method lookup"); |
e27ad1f2 | 373 | |
e1a479c5 BB |
374 | assert(hvname); |
375 | assert(name); | |
463ee0b2 | 376 | |
bfcb3514 | 377 | DEBUG_o( Perl_deb(aTHX_ "Looking for method %s in package %s\n",name,hvname) ); |
44a8e56a | 378 | |
dd69841b | 379 | topgen_cmp = HvMROMETA(stash)->cache_gen + PL_sub_generation; |
e1a479c5 BB |
380 | |
381 | /* check locally for a real method or a cache entry */ | |
382 | gvp = (GV**)hv_fetch(stash, name, len, create); | |
383 | if(gvp) { | |
384 | topgv = *gvp; | |
385 | assert(topgv); | |
386 | if (SvTYPE(topgv) != SVt_PVGV) | |
387 | gv_init(topgv, stash, name, len, TRUE); | |
388 | if ((cand_cv = GvCV(topgv))) { | |
389 | /* If genuine method or valid cache entry, use it */ | |
390 | if (!GvCVGEN(topgv) || GvCVGEN(topgv) == topgen_cmp) { | |
391 | return topgv; | |
392 | } | |
393 | else { | |
394 | /* stale cache entry, junk it and move on */ | |
395 | SvREFCNT_dec(cand_cv); | |
396 | GvCV(topgv) = cand_cv = NULL; | |
397 | GvCVGEN(topgv) = 0; | |
398 | } | |
399 | } | |
400 | else if (GvCVGEN(topgv) == topgen_cmp) { | |
401 | /* cache indicates no such method definitively */ | |
402 | return 0; | |
403 | } | |
463ee0b2 | 404 | } |
79072805 | 405 | |
e1a479c5 BB |
406 | packlen = HvNAMELEN_get(stash); |
407 | if (packlen >= 7 && strEQ(hvname + packlen - 7, "::SUPER")) { | |
408 | HV* basestash; | |
409 | packlen -= 7; | |
410 | basestash = gv_stashpvn(hvname, packlen, GV_ADD); | |
411 | linear_av = mro_get_linear_isa(basestash); | |
9607fc9c | 412 | } |
e1a479c5 BB |
413 | else { |
414 | linear_av = mro_get_linear_isa(stash); /* has ourselves at the top of the list */ | |
79072805 | 415 | } |
a0d0e21e | 416 | |
e1a479c5 BB |
417 | linear_svp = AvARRAY(linear_av) + 1; /* skip over self */ |
418 | items = AvFILLp(linear_av); /* no +1, to skip over self */ | |
419 | while (items--) { | |
420 | linear_sv = *linear_svp++; | |
421 | assert(linear_sv); | |
422 | cstash = gv_stashsv(linear_sv, 0); | |
423 | ||
dd69841b | 424 | if (!cstash) { |
b0c482e3 RGS |
425 | if (ckWARN(WARN_SYNTAX)) |
426 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Can't locate package %"SVf" for @%s::ISA", | |
e1a479c5 BB |
427 | SVfARG(linear_sv), hvname); |
428 | continue; | |
429 | } | |
9607fc9c | 430 | |
e1a479c5 BB |
431 | assert(cstash); |
432 | ||
433 | gvp = (GV**)hv_fetch(cstash, name, len, 0); | |
434 | if (!gvp) continue; | |
435 | candidate = *gvp; | |
436 | assert(candidate); | |
437 | if (SvTYPE(candidate) != SVt_PVGV) gv_init(candidate, cstash, name, len, TRUE); | |
438 | if (SvTYPE(candidate) == SVt_PVGV && (cand_cv = GvCV(candidate)) && !GvCVGEN(candidate)) { | |
439 | /* | |
440 | * Found real method, cache method in topgv if: | |
441 | * 1. topgv has no synonyms (else inheritance crosses wires) | |
442 | * 2. method isn't a stub (else AUTOLOAD fails spectacularly) | |
443 | */ | |
444 | if (topgv && (GvREFCNT(topgv) == 1) && (CvROOT(cand_cv) || CvXSUB(cand_cv))) { | |
445 | if ((old_cv = GvCV(topgv))) SvREFCNT_dec(old_cv); | |
446 | SvREFCNT_inc_simple_void_NN(cand_cv); | |
447 | GvCV(topgv) = cand_cv; | |
448 | GvCVGEN(topgv) = topgen_cmp; | |
449 | } | |
450 | return candidate; | |
451 | } | |
452 | } | |
9607fc9c | 453 | |
e1a479c5 BB |
454 | /* Check UNIVERSAL without caching */ |
455 | if(level == 0 || level == -1) { | |
456 | candidate = gv_fetchmeth(NULL, name, len, 1); | |
457 | if(candidate) { | |
458 | cand_cv = GvCV(candidate); | |
459 | if (topgv && (GvREFCNT(topgv) == 1) && (CvROOT(cand_cv) || CvXSUB(cand_cv))) { | |
460 | if ((old_cv = GvCV(topgv))) SvREFCNT_dec(old_cv); | |
461 | SvREFCNT_inc_simple_void_NN(cand_cv); | |
462 | GvCV(topgv) = cand_cv; | |
463 | GvCVGEN(topgv) = topgen_cmp; | |
464 | } | |
465 | return candidate; | |
466 | } | |
467 | } | |
468 | ||
469 | if (topgv && GvREFCNT(topgv) == 1) { | |
470 | /* cache the fact that the method is not defined */ | |
471 | GvCVGEN(topgv) = topgen_cmp; | |
a0d0e21e LW |
472 | } |
473 | ||
79072805 LW |
474 | return 0; |
475 | } | |
476 | ||
954c1994 | 477 | /* |
611c1e95 IZ |
478 | =for apidoc gv_fetchmeth_autoload |
479 | ||
480 | Same as gv_fetchmeth(), but looks for autoloaded subroutines too. | |
481 | Returns a glob for the subroutine. | |
482 | ||
483 | For an autoloaded subroutine without a GV, will create a GV even | |
484 | if C<level < 0>. For an autoloaded subroutine without a stub, GvCV() | |
485 | of the result may be zero. | |
486 | ||
487 | =cut | |
488 | */ | |
489 | ||
490 | GV * | |
491 | Perl_gv_fetchmeth_autoload(pTHX_ HV *stash, const char *name, STRLEN len, I32 level) | |
492 | { | |
493 | GV *gv = gv_fetchmeth(stash, name, len, level); | |
494 | ||
495 | if (!gv) { | |
611c1e95 IZ |
496 | CV *cv; |
497 | GV **gvp; | |
498 | ||
499 | if (!stash) | |
6136c704 | 500 | return NULL; /* UNIVERSAL::AUTOLOAD could cause trouble */ |
5c7983e5 | 501 | if (len == S_autolen && strnEQ(name, S_autoload, S_autolen)) |
6136c704 | 502 | return NULL; |
5c7983e5 | 503 | if (!(gv = gv_fetchmeth(stash, S_autoload, S_autolen, FALSE))) |
6136c704 | 504 | return NULL; |
611c1e95 IZ |
505 | cv = GvCV(gv); |
506 | if (!(CvROOT(cv) || CvXSUB(cv))) | |
6136c704 | 507 | return NULL; |
611c1e95 IZ |
508 | /* Have an autoload */ |
509 | if (level < 0) /* Cannot do without a stub */ | |
510 | gv_fetchmeth(stash, name, len, 0); | |
511 | gvp = (GV**)hv_fetch(stash, name, len, (level >= 0)); | |
512 | if (!gvp) | |
6136c704 | 513 | return NULL; |
611c1e95 IZ |
514 | return *gvp; |
515 | } | |
516 | return gv; | |
517 | } | |
518 | ||
519 | /* | |
954c1994 GS |
520 | =for apidoc gv_fetchmethod_autoload |
521 | ||
522 | Returns the glob which contains the subroutine to call to invoke the method | |
523 | on the C<stash>. In fact in the presence of autoloading this may be the | |
524 | glob for "AUTOLOAD". In this case the corresponding variable $AUTOLOAD is | |
b267980d | 525 | already setup. |
954c1994 GS |
526 | |
527 | The third parameter of C<gv_fetchmethod_autoload> determines whether | |
528 | AUTOLOAD lookup is performed if the given method is not present: non-zero | |
b267980d | 529 | means yes, look for AUTOLOAD; zero means no, don't look for AUTOLOAD. |
954c1994 | 530 | Calling C<gv_fetchmethod> is equivalent to calling C<gv_fetchmethod_autoload> |
b267980d | 531 | with a non-zero C<autoload> parameter. |
954c1994 GS |
532 | |
533 | These functions grant C<"SUPER"> token as a prefix of the method name. Note | |
534 | that if you want to keep the returned glob for a long time, you need to | |
535 | check for it being "AUTOLOAD", since at the later time the call may load a | |
536 | different subroutine due to $AUTOLOAD changing its value. Use the glob | |
b267980d | 537 | created via a side effect to do this. |
954c1994 GS |
538 | |
539 | These functions have the same side-effects and as C<gv_fetchmeth> with | |
540 | C<level==0>. C<name> should be writable if contains C<':'> or C<' | |
541 | ''>. The warning against passing the GV returned by C<gv_fetchmeth> to | |
b267980d | 542 | C<call_sv> apply equally to these functions. |
954c1994 GS |
543 | |
544 | =cut | |
545 | */ | |
546 | ||
7d3b1f61 BB |
547 | STATIC HV* |
548 | S_gv_get_super_pkg(pTHX_ const char* name, I32 namelen) | |
549 | { | |
550 | AV* superisa; | |
551 | GV** gvp; | |
552 | GV* gv; | |
553 | HV* stash; | |
554 | ||
555 | stash = gv_stashpvn(name, namelen, 0); | |
556 | if(stash) return stash; | |
557 | ||
558 | /* If we must create it, give it an @ISA array containing | |
559 | the real package this SUPER is for, so that it's tied | |
560 | into the cache invalidation code correctly */ | |
561 | stash = gv_stashpvn(name, namelen, GV_ADD); | |
562 | gvp = (GV**)hv_fetchs(stash, "ISA", TRUE); | |
563 | gv = *gvp; | |
564 | gv_init(gv, stash, "ISA", 3, TRUE); | |
565 | superisa = GvAVn(gv); | |
566 | GvMULTI_on(gv); | |
567 | sv_magic((SV*)superisa, (SV*)gv, PERL_MAGIC_isa, NULL, 0); | |
8e3a4a30 | 568 | #ifdef USE_ITHREADS |
7d3b1f61 | 569 | av_push(superisa, newSVpv(CopSTASHPV(PL_curcop), 0)); |
8e3a4a30 NC |
570 | #else |
571 | av_push(superisa, newSVhek(CopSTASH(PL_curcop) | |
572 | ? HvNAME_HEK(CopSTASH(PL_curcop)) : NULL)); | |
573 | #endif | |
7d3b1f61 BB |
574 | |
575 | return stash; | |
576 | } | |
577 | ||
16815324 NC |
578 | /* FIXME. If changing this function note the comment in pp_hot's |
579 | S_method_common: | |
580 | ||
581 | This code tries to figure out just what went wrong with | |
582 | gv_fetchmethod. It therefore needs to duplicate a lot of | |
583 | the internals of that function. ... | |
584 | ||
585 | I'd guess that with one more flag bit that could all be moved inside | |
586 | here. | |
587 | */ | |
588 | ||
dc848c6f | 589 | GV * |
864dbfa3 | 590 | Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload) |
dc848c6f | 591 | { |
97aff369 | 592 | dVAR; |
08105a92 | 593 | register const char *nend; |
c445ea15 | 594 | const char *nsplit = NULL; |
a0d0e21e | 595 | GV* gv; |
0dae17bd GS |
596 | HV* ostash = stash; |
597 | ||
598 | if (stash && SvTYPE(stash) < SVt_PVHV) | |
5c284bb0 | 599 | stash = NULL; |
b267980d | 600 | |
463ee0b2 | 601 | for (nend = name; *nend; nend++) { |
9607fc9c | 602 | if (*nend == '\'') |
a0d0e21e | 603 | nsplit = nend; |
9607fc9c | 604 | else if (*nend == ':' && *(nend + 1) == ':') |
605 | nsplit = ++nend; | |
a0d0e21e LW |
606 | } |
607 | if (nsplit) { | |
9d4ba2ae | 608 | const char * const origname = name; |
a0d0e21e | 609 | name = nsplit + 1; |
a0d0e21e LW |
610 | if (*nsplit == ':') |
611 | --nsplit; | |
9607fc9c | 612 | if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) { |
613 | /* ->SUPER::method should really be looked up in original stash */ | |
b37c2d43 | 614 | SV * const tmpstr = sv_2mortal(Perl_newSVpvf(aTHX_ "%s::SUPER", |
1d7c1841 | 615 | CopSTASHPV(PL_curcop))); |
af09ea45 | 616 | /* __PACKAGE__::SUPER stash should be autovivified */ |
7d3b1f61 | 617 | stash = gv_get_super_pkg(SvPVX_const(tmpstr), SvCUR(tmpstr)); |
cea2e8a9 | 618 | DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n", |
bfcb3514 | 619 | origname, HvNAME_get(stash), name) ); |
4633a7c4 | 620 | } |
e189a56d | 621 | else { |
af09ea45 | 622 | /* don't autovifify if ->NoSuchStash::method */ |
da51bb9b | 623 | stash = gv_stashpvn(origname, nsplit - origname, 0); |
e189a56d IK |
624 | |
625 | /* however, explicit calls to Pkg::SUPER::method may | |
626 | happen, and may require autovivification to work */ | |
627 | if (!stash && (nsplit - origname) >= 7 && | |
628 | strnEQ(nsplit - 7, "::SUPER", 7) && | |
da51bb9b | 629 | gv_stashpvn(origname, nsplit - origname - 7, 0)) |
7d3b1f61 | 630 | stash = gv_get_super_pkg(origname, nsplit - origname); |
e189a56d | 631 | } |
0dae17bd | 632 | ostash = stash; |
4633a7c4 LW |
633 | } |
634 | ||
9607fc9c | 635 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
a0d0e21e | 636 | if (!gv) { |
2f6e0fe7 | 637 | if (strEQ(name,"import") || strEQ(name,"unimport")) |
3280af22 | 638 | gv = (GV*)&PL_sv_yes; |
dc848c6f | 639 | else if (autoload) |
0dae17bd | 640 | gv = gv_autoload4(ostash, name, nend - name, TRUE); |
463ee0b2 | 641 | } |
dc848c6f | 642 | else if (autoload) { |
9d4ba2ae | 643 | CV* const cv = GvCV(gv); |
09280a33 CS |
644 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
645 | GV* stubgv; | |
646 | GV* autogv; | |
647 | ||
648 | if (CvANON(cv)) | |
649 | stubgv = gv; | |
650 | else { | |
651 | stubgv = CvGV(cv); | |
652 | if (GvCV(stubgv) != cv) /* orphaned import */ | |
653 | stubgv = gv; | |
654 | } | |
655 | autogv = gv_autoload4(GvSTASH(stubgv), | |
656 | GvNAME(stubgv), GvNAMELEN(stubgv), TRUE); | |
dc848c6f | 657 | if (autogv) |
658 | gv = autogv; | |
659 | } | |
660 | } | |
44a8e56a | 661 | |
662 | return gv; | |
663 | } | |
664 | ||
665 | GV* | |
864dbfa3 | 666 | Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method) |
44a8e56a | 667 | { |
27da23d5 | 668 | dVAR; |
44a8e56a | 669 | GV* gv; |
670 | CV* cv; | |
671 | HV* varstash; | |
672 | GV* vargv; | |
673 | SV* varsv; | |
e1ec3a88 | 674 | const char *packname = ""; |
eae70eaa | 675 | STRLEN packname_len = 0; |
44a8e56a | 676 | |
5c7983e5 | 677 | if (len == S_autolen && strnEQ(name, S_autoload, S_autolen)) |
a0714e2c | 678 | return NULL; |
0dae17bd GS |
679 | if (stash) { |
680 | if (SvTYPE(stash) < SVt_PVHV) { | |
e62f0680 | 681 | packname = SvPV_const((SV*)stash, packname_len); |
5c284bb0 | 682 | stash = NULL; |
0dae17bd GS |
683 | } |
684 | else { | |
bfcb3514 | 685 | packname = HvNAME_get(stash); |
7423f6db | 686 | packname_len = HvNAMELEN_get(stash); |
0dae17bd GS |
687 | } |
688 | } | |
5c7983e5 | 689 | if (!(gv = gv_fetchmeth(stash, S_autoload, S_autolen, FALSE))) |
a0714e2c | 690 | return NULL; |
dc848c6f | 691 | cv = GvCV(gv); |
692 | ||
adb5a9ae | 693 | if (!(CvROOT(cv) || CvXSUB(cv))) |
a0714e2c | 694 | return NULL; |
ed850460 | 695 | |
dc848c6f | 696 | /* |
697 | * Inheriting AUTOLOAD for non-methods works ... for now. | |
698 | */ | |
041457d9 DM |
699 | if (!method && (GvCVGEN(gv) || GvSTASH(gv) != stash) |
700 | && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX) | |
701 | ) | |
12bcd1a6 | 702 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
dc848c6f | 703 | "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated", |
0dae17bd | 704 | packname, (int)len, name); |
44a8e56a | 705 | |
aed2304a | 706 | if (CvISXSUB(cv)) { |
adb5a9ae DM |
707 | /* rather than lookup/init $AUTOLOAD here |
708 | * only to have the XSUB do another lookup for $AUTOLOAD | |
709 | * and split that value on the last '::', | |
710 | * pass along the same data via some unused fields in the CV | |
711 | */ | |
712 | CvSTASH(cv) = stash; | |
f880fe2f | 713 | SvPV_set(cv, (char *)name); /* cast to lose constness warning */ |
b162af07 | 714 | SvCUR_set(cv, len); |
adb5a9ae DM |
715 | return gv; |
716 | } | |
adb5a9ae | 717 | |
44a8e56a | 718 | /* |
719 | * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name. | |
720 | * The subroutine's original name may not be "AUTOLOAD", so we don't | |
721 | * use that, but for lack of anything better we will use the sub's | |
722 | * original package to look up $AUTOLOAD. | |
723 | */ | |
724 | varstash = GvSTASH(CvGV(cv)); | |
5c7983e5 | 725 | vargv = *(GV**)hv_fetch(varstash, S_autoload, S_autolen, TRUE); |
3d35f11b GS |
726 | ENTER; |
727 | ||
c69033f2 | 728 | if (!isGV(vargv)) { |
5c7983e5 | 729 | gv_init(vargv, varstash, S_autoload, S_autolen, FALSE); |
c69033f2 | 730 | #ifdef PERL_DONT_CREATE_GVSV |
561b68a9 | 731 | GvSV(vargv) = newSV(0); |
c69033f2 NC |
732 | #endif |
733 | } | |
3d35f11b | 734 | LEAVE; |
e203899d | 735 | varsv = GvSVn(vargv); |
7423f6db | 736 | sv_setpvn(varsv, packname, packname_len); |
396482e1 | 737 | sv_catpvs(varsv, "::"); |
44a8e56a | 738 | sv_catpvn(varsv, name, len); |
a0d0e21e LW |
739 | return gv; |
740 | } | |
741 | ||
44a2ac75 YO |
742 | |
743 | /* require_tie_mod() internal routine for requiring a module | |
744 | * that implements the logic of automatical ties like %! and %- | |
745 | * | |
746 | * The "gv" parameter should be the glob. | |
45cbc99a RGS |
747 | * "varpv" holds the name of the var, used for error messages. |
748 | * "namesv" holds the module name. Its refcount will be decremented. | |
44a2ac75 | 749 | * "methpv" holds the method name to test for to check that things |
45cbc99a RGS |
750 | * are working reasonably close to as expected. |
751 | * "flags": if flag & 1 then save the scalar before loading. | |
44a2ac75 YO |
752 | * For the protection of $! to work (it is set by this routine) |
753 | * the sv slot must already be magicalized. | |
d2c93421 | 754 | */ |
44a2ac75 YO |
755 | STATIC HV* |
756 | S_require_tie_mod(pTHX_ GV *gv, const char *varpv, SV* namesv, const char *methpv,const U32 flags) | |
d2c93421 | 757 | { |
27da23d5 | 758 | dVAR; |
da51bb9b | 759 | HV* stash = gv_stashsv(namesv, 0); |
45cbc99a | 760 | |
44a2ac75 | 761 | if (!stash || !(gv_fetchmethod(stash, methpv))) { |
45cbc99a RGS |
762 | SV *module = newSVsv(namesv); |
763 | char varname = *varpv; /* varpv might be clobbered by load_module, | |
764 | so save it. For the moment it's always | |
765 | a single char. */ | |
d2c93421 | 766 | dSP; |
d2c93421 | 767 | ENTER; |
44a2ac75 | 768 | if ( flags & 1 ) |
45cbc99a | 769 | save_scalar(gv); |
cac54379 | 770 | PUSHSTACKi(PERLSI_MAGIC); |
45cbc99a | 771 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, module, NULL); |
cac54379 | 772 | POPSTACK; |
d2c93421 RH |
773 | LEAVE; |
774 | SPAGAIN; | |
da51bb9b | 775 | stash = gv_stashsv(namesv, 0); |
44a2ac75 | 776 | if (!stash) |
45cbc99a RGS |
777 | Perl_croak(aTHX_ "panic: Can't use %%%c because %"SVf" is not available", |
778 | varname, SVfARG(namesv)); | |
779 | else if (!gv_fetchmethod(stash, methpv)) | |
780 | Perl_croak(aTHX_ "panic: Can't use %%%c because %"SVf" does not support method %s", | |
781 | varname, SVfARG(namesv), methpv); | |
d2c93421 | 782 | } |
45cbc99a | 783 | SvREFCNT_dec(namesv); |
44a2ac75 | 784 | return stash; |
d2c93421 RH |
785 | } |
786 | ||
954c1994 GS |
787 | /* |
788 | =for apidoc gv_stashpv | |
789 | ||
da51bb9b | 790 | Returns a pointer to the stash for a specified package. Uses C<strlen> to |
75c442e4 | 791 | determine the length of C<name>, then calls C<gv_stashpvn()>. |
954c1994 GS |
792 | |
793 | =cut | |
794 | */ | |
795 | ||
a0d0e21e | 796 | HV* |
864dbfa3 | 797 | Perl_gv_stashpv(pTHX_ const char *name, I32 create) |
a0d0e21e | 798 | { |
dc437b57 | 799 | return gv_stashpvn(name, strlen(name), create); |
800 | } | |
801 | ||
bc96cb06 SH |
802 | /* |
803 | =for apidoc gv_stashpvn | |
804 | ||
da51bb9b NC |
805 | Returns a pointer to the stash for a specified package. The C<namelen> |
806 | parameter indicates the length of the C<name>, in bytes. C<flags> is passed | |
807 | to C<gv_fetchpvn_flags()>, so if set to C<GV_ADD> then the package will be | |
808 | created if it does not already exist. If the package does not exist and | |
809 | C<flags> is 0 (or any other setting that does not create packages) then NULL | |
810 | is returned. | |
811 | ||
bc96cb06 SH |
812 | |
813 | =cut | |
814 | */ | |
815 | ||
dc437b57 | 816 | HV* |
da51bb9b | 817 | Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 flags) |
dc437b57 | 818 | { |
0cea0058 | 819 | char smallbuf[128]; |
46fc3d4c | 820 | char *tmpbuf; |
a0d0e21e LW |
821 | HV *stash; |
822 | GV *tmpgv; | |
dc437b57 | 823 | |
798b63bc | 824 | if (namelen + 2 <= sizeof smallbuf) |
46fc3d4c | 825 | tmpbuf = smallbuf; |
826 | else | |
2ae0db35 | 827 | Newx(tmpbuf, namelen + 2, char); |
dc437b57 | 828 | Copy(name,tmpbuf,namelen,char); |
829 | tmpbuf[namelen++] = ':'; | |
830 | tmpbuf[namelen++] = ':'; | |
da51bb9b | 831 | tmpgv = gv_fetchpvn_flags(tmpbuf, namelen, flags, SVt_PVHV); |
46fc3d4c | 832 | if (tmpbuf != smallbuf) |
833 | Safefree(tmpbuf); | |
a0d0e21e | 834 | if (!tmpgv) |
da51bb9b | 835 | return NULL; |
a0d0e21e LW |
836 | if (!GvHV(tmpgv)) |
837 | GvHV(tmpgv) = newHV(); | |
838 | stash = GvHV(tmpgv); | |
bfcb3514 | 839 | if (!HvNAME_get(stash)) |
51a37f80 | 840 | hv_name_set(stash, name, namelen, 0); |
a0d0e21e | 841 | return stash; |
463ee0b2 LW |
842 | } |
843 | ||
954c1994 GS |
844 | /* |
845 | =for apidoc gv_stashsv | |
846 | ||
da51bb9b | 847 | Returns a pointer to the stash for a specified package. See C<gv_stashpvn>. |
954c1994 GS |
848 | |
849 | =cut | |
850 | */ | |
851 | ||
a0d0e21e | 852 | HV* |
da51bb9b | 853 | Perl_gv_stashsv(pTHX_ SV *sv, I32 flags) |
a0d0e21e | 854 | { |
dc437b57 | 855 | STRLEN len; |
9d4ba2ae | 856 | const char * const ptr = SvPV_const(sv,len); |
da51bb9b | 857 | return gv_stashpvn(ptr, len, flags); |
a0d0e21e LW |
858 | } |
859 | ||
860 | ||
463ee0b2 | 861 | GV * |
7a5fd60d | 862 | Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) { |
b7787f18 | 863 | return gv_fetchpvn_flags(nambeg, strlen(nambeg), add, sv_type); |
7a5fd60d NC |
864 | } |
865 | ||
866 | GV * | |
867 | Perl_gv_fetchsv(pTHX_ SV *name, I32 flags, I32 sv_type) { | |
868 | STRLEN len; | |
9d4ba2ae | 869 | const char * const nambeg = SvPV_const(name, len); |
7a5fd60d NC |
870 | return gv_fetchpvn_flags(nambeg, len, flags | SvUTF8(name), sv_type); |
871 | } | |
872 | ||
873 | GV * | |
874 | Perl_gv_fetchpvn_flags(pTHX_ const char *nambeg, STRLEN full_len, I32 flags, | |
875 | I32 sv_type) | |
79072805 | 876 | { |
97aff369 | 877 | dVAR; |
08105a92 | 878 | register const char *name = nambeg; |
c445ea15 | 879 | register GV *gv = NULL; |
79072805 | 880 | GV**gvp; |
79072805 | 881 | I32 len; |
b3d904f3 | 882 | register const char *name_cursor; |
c445ea15 | 883 | HV *stash = NULL; |
add2581e | 884 | const I32 no_init = flags & (GV_NOADD_NOINIT | GV_NOINIT); |
e26df76a | 885 | const I32 no_expand = flags & GV_NOEXPAND; |
780a5241 | 886 | const I32 add = flags & ~GV_NOADD_MASK; |
b3d904f3 NC |
887 | const char *const name_end = nambeg + full_len; |
888 | const char *const name_em1 = name_end - 1; | |
5e0caaeb | 889 | U32 faking_it; |
79072805 | 890 | |
fafc274c NC |
891 | if (flags & GV_NOTQUAL) { |
892 | /* Caller promised that there is no stash, so we can skip the check. */ | |
893 | len = full_len; | |
894 | goto no_stash; | |
895 | } | |
896 | ||
b208e10c NC |
897 | if (full_len > 2 && *name == '*' && isALPHA(name[1])) { |
898 | /* accidental stringify on a GV? */ | |
c07a80fd | 899 | name++; |
b208e10c | 900 | } |
c07a80fd | 901 | |
b3d904f3 NC |
902 | for (name_cursor = name; name_cursor < name_end; name_cursor++) { |
903 | if ((*name_cursor == ':' && name_cursor < name_em1 | |
904 | && name_cursor[1] == ':') | |
905 | || (*name_cursor == '\'' && name_cursor[1])) | |
463ee0b2 | 906 | { |
463ee0b2 | 907 | if (!stash) |
3280af22 | 908 | stash = PL_defstash; |
dc437b57 | 909 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0714e2c | 910 | return NULL; |
463ee0b2 | 911 | |
b3d904f3 | 912 | len = name_cursor - name; |
85e6fe83 | 913 | if (len > 0) { |
0cea0058 | 914 | char smallbuf[128]; |
62b57502 | 915 | char *tmpbuf; |
62b57502 | 916 | |
798b63bc | 917 | if (len + 2 <= (I32)sizeof (smallbuf)) |
3c78fafa | 918 | tmpbuf = smallbuf; |
62b57502 | 919 | else |
2ae0db35 | 920 | Newx(tmpbuf, len+2, char); |
a0d0e21e LW |
921 | Copy(name, tmpbuf, len, char); |
922 | tmpbuf[len++] = ':'; | |
923 | tmpbuf[len++] = ':'; | |
463ee0b2 | 924 | gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); |
a0714e2c | 925 | gv = gvp ? *gvp : NULL; |
3280af22 | 926 | if (gv && gv != (GV*)&PL_sv_undef) { |
6fa846a0 | 927 | if (SvTYPE(gv) != SVt_PVGV) |
0f303493 | 928 | gv_init(gv, stash, tmpbuf, len, (add & GV_ADDMULTI)); |
6fa846a0 GS |
929 | else |
930 | GvMULTI_on(gv); | |
931 | } | |
3c78fafa | 932 | if (tmpbuf != smallbuf) |
62b57502 | 933 | Safefree(tmpbuf); |
3280af22 | 934 | if (!gv || gv == (GV*)&PL_sv_undef) |
a0714e2c | 935 | return NULL; |
85e6fe83 | 936 | |
463ee0b2 LW |
937 | if (!(stash = GvHV(gv))) |
938 | stash = GvHV(gv) = newHV(); | |
85e6fe83 | 939 | |
bfcb3514 | 940 | if (!HvNAME_get(stash)) |
b3d904f3 | 941 | hv_name_set(stash, nambeg, name_cursor - nambeg, 0); |
463ee0b2 LW |
942 | } |
943 | ||
b3d904f3 NC |
944 | if (*name_cursor == ':') |
945 | name_cursor++; | |
946 | name_cursor++; | |
947 | name = name_cursor; | |
ad6bfa9d | 948 | if (name == name_end) |
017a3ce5 | 949 | return gv ? gv : (GV*)*hv_fetchs(PL_defstash, "main::", TRUE); |
79072805 | 950 | } |
79072805 | 951 | } |
b3d904f3 | 952 | len = name_cursor - name; |
463ee0b2 LW |
953 | |
954 | /* No stash in name, so see how we can default */ | |
955 | ||
956 | if (!stash) { | |
fafc274c | 957 | no_stash: |
8ccce9ae | 958 | if (len && isIDFIRST_lazy(name)) { |
9607fc9c | 959 | bool global = FALSE; |
960 | ||
8ccce9ae NC |
961 | switch (len) { |
962 | case 1: | |
18ea00d7 | 963 | if (*name == '_') |
9d116dd7 | 964 | global = TRUE; |
18ea00d7 | 965 | break; |
8ccce9ae NC |
966 | case 3: |
967 | if ((name[0] == 'I' && name[1] == 'N' && name[2] == 'C') | |
968 | || (name[0] == 'E' && name[1] == 'N' && name[2] == 'V') | |
969 | || (name[0] == 'S' && name[1] == 'I' && name[2] == 'G')) | |
9d116dd7 | 970 | global = TRUE; |
18ea00d7 | 971 | break; |
8ccce9ae NC |
972 | case 4: |
973 | if (name[0] == 'A' && name[1] == 'R' && name[2] == 'G' | |
974 | && name[3] == 'V') | |
9d116dd7 | 975 | global = TRUE; |
18ea00d7 | 976 | break; |
8ccce9ae NC |
977 | case 5: |
978 | if (name[0] == 'S' && name[1] == 'T' && name[2] == 'D' | |
979 | && name[3] == 'I' && name[4] == 'N') | |
463ee0b2 | 980 | global = TRUE; |
18ea00d7 | 981 | break; |
8ccce9ae NC |
982 | case 6: |
983 | if ((name[0] == 'S' && name[1] == 'T' && name[2] == 'D') | |
984 | &&((name[3] == 'O' && name[4] == 'U' && name[5] == 'T') | |
985 | ||(name[3] == 'E' && name[4] == 'R' && name[5] == 'R'))) | |
986 | global = TRUE; | |
987 | break; | |
988 | case 7: | |
989 | if (name[0] == 'A' && name[1] == 'R' && name[2] == 'G' | |
990 | && name[3] == 'V' && name[4] == 'O' && name[5] == 'U' | |
991 | && name[6] == 'T') | |
18ea00d7 NC |
992 | global = TRUE; |
993 | break; | |
463ee0b2 | 994 | } |
9607fc9c | 995 | |
463ee0b2 | 996 | if (global) |
3280af22 | 997 | stash = PL_defstash; |
923e4eb5 | 998 | else if (IN_PERL_COMPILETIME) { |
3280af22 NIS |
999 | stash = PL_curstash; |
1000 | if (add && (PL_hints & HINT_STRICT_VARS) && | |
748a9306 LW |
1001 | sv_type != SVt_PVCV && |
1002 | sv_type != SVt_PVGV && | |
4633a7c4 | 1003 | sv_type != SVt_PVFM && |
c07a80fd | 1004 | sv_type != SVt_PVIO && |
70ec6265 NC |
1005 | !(len == 1 && sv_type == SVt_PV && |
1006 | (*name == 'a' || *name == 'b')) ) | |
748a9306 | 1007 | { |
4633a7c4 LW |
1008 | gvp = (GV**)hv_fetch(stash,name,len,0); |
1009 | if (!gvp || | |
3280af22 | 1010 | *gvp == (GV*)&PL_sv_undef || |
a5f75d66 AD |
1011 | SvTYPE(*gvp) != SVt_PVGV) |
1012 | { | |
d4c19fe8 | 1013 | stash = NULL; |
a5f75d66 | 1014 | } |
155aba94 GS |
1015 | else if ((sv_type == SVt_PV && !GvIMPORTED_SV(*gvp)) || |
1016 | (sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp)) || | |
1017 | (sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp)) ) | |
4633a7c4 | 1018 | { |
cea2e8a9 | 1019 | Perl_warn(aTHX_ "Variable \"%c%s\" is not imported", |
4633a7c4 LW |
1020 | sv_type == SVt_PVAV ? '@' : |
1021 | sv_type == SVt_PVHV ? '%' : '$', | |
1022 | name); | |
8ebc5c01 | 1023 | if (GvCVu(*gvp)) |
cc507455 | 1024 | Perl_warn(aTHX_ "\t(Did you mean &%s instead?)\n", name); |
d4c19fe8 | 1025 | stash = NULL; |
4633a7c4 | 1026 | } |
a0d0e21e | 1027 | } |
85e6fe83 | 1028 | } |
463ee0b2 | 1029 | else |
1d7c1841 | 1030 | stash = CopSTASH(PL_curcop); |
463ee0b2 LW |
1031 | } |
1032 | else | |
3280af22 | 1033 | stash = PL_defstash; |
463ee0b2 LW |
1034 | } |
1035 | ||
1036 | /* By this point we should have a stash and a name */ | |
1037 | ||
a0d0e21e | 1038 | if (!stash) { |
5a844595 | 1039 | if (add) { |
9d4ba2ae | 1040 | SV * const err = Perl_mess(aTHX_ |
5a844595 GS |
1041 | "Global symbol \"%s%s\" requires explicit package name", |
1042 | (sv_type == SVt_PV ? "$" | |
1043 | : sv_type == SVt_PVAV ? "@" | |
1044 | : sv_type == SVt_PVHV ? "%" | |
608b3986 | 1045 | : ""), name); |
e7f343b6 | 1046 | GV *gv; |
608b3986 AE |
1047 | if (USE_UTF8_IN_NAMES) |
1048 | SvUTF8_on(err); | |
1049 | qerror(err); | |
e7f343b6 NC |
1050 | gv = gv_fetchpvn_flags("<none>::", 8, GV_ADDMULTI, SVt_PVHV); |
1051 | if(!gv) { | |
1052 | /* symbol table under destruction */ | |
1053 | return NULL; | |
1054 | } | |
1055 | stash = GvHV(gv); | |
a0d0e21e | 1056 | } |
d7aacf4e | 1057 | else |
a0714e2c | 1058 | return NULL; |
a0d0e21e LW |
1059 | } |
1060 | ||
1061 | if (!SvREFCNT(stash)) /* symbol table under destruction */ | |
a0714e2c | 1062 | return NULL; |
a0d0e21e | 1063 | |
79072805 | 1064 | gvp = (GV**)hv_fetch(stash,name,len,add); |
3280af22 | 1065 | if (!gvp || *gvp == (GV*)&PL_sv_undef) |
a0714e2c | 1066 | return NULL; |
79072805 LW |
1067 | gv = *gvp; |
1068 | if (SvTYPE(gv) == SVt_PVGV) { | |
a0d0e21e | 1069 | if (add) { |
a5f75d66 | 1070 | GvMULTI_on(gv); |
a0d0e21e | 1071 | gv_init_sv(gv, sv_type); |
45cbc99a | 1072 | if (len == 1 && (sv_type == SVt_PVHV || sv_type == SVt_PVGV)) { |
44a2ac75 YO |
1073 | if (*name == '!') |
1074 | require_tie_mod(gv, "!", newSVpvs("Errno"), "TIEHASH", 1); | |
45cbc99a | 1075 | else if (*name == '-' || *name == '+') |
192b9cd1 | 1076 | require_tie_mod(gv, name, newSVpvs("Tie::Hash::NamedCapture"), "TIEHASH", 0); |
45cbc99a | 1077 | } |
a0d0e21e | 1078 | } |
79072805 | 1079 | return gv; |
add2581e | 1080 | } else if (no_init) { |
55d729e4 | 1081 | return gv; |
e26df76a NC |
1082 | } else if (no_expand && SvROK(gv)) { |
1083 | return gv; | |
79072805 | 1084 | } |
93a17b20 | 1085 | |
5e0caaeb NC |
1086 | /* Adding a new symbol. |
1087 | Unless of course there was already something non-GV here, in which case | |
1088 | we want to behave as if there was always a GV here, containing some sort | |
1089 | of subroutine. | |
1090 | Otherwise we run the risk of creating things like GvIO, which can cause | |
1091 | subtle bugs. eg the one that tripped up SQL::Translator */ | |
1092 | ||
1093 | faking_it = SvOK(gv); | |
93a17b20 | 1094 | |
0453d815 | 1095 | if (add & GV_ADDWARN && ckWARN_d(WARN_INTERNAL)) |
9014280d | 1096 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Had to create %s unexpectedly", nambeg); |
55d729e4 | 1097 | gv_init(gv, stash, name, len, add & GV_ADDMULTI); |
5e0caaeb | 1098 | gv_init_sv(gv, faking_it ? SVt_PVCV : sv_type); |
93a17b20 | 1099 | |
a0288114 | 1100 | if (isALPHA(name[0]) && ! (isLEXWARN_on ? ckWARN(WARN_ONCE) |
7272584d | 1101 | : (PL_dowarn & G_WARN_ON ) ) ) |
0453d815 PM |
1102 | GvMULTI_on(gv) ; |
1103 | ||
93a17b20 | 1104 | /* set up magic where warranted */ |
cc4c2da6 | 1105 | if (len > 1) { |
9431620d | 1106 | #ifndef EBCDIC |
cc4c2da6 | 1107 | if (*name > 'V' ) { |
6f207bd3 | 1108 | NOOP; |
cc4c2da6 | 1109 | /* Nothing else to do. |
91f565cb | 1110 | The compiler will probably turn the switch statement into a |
cc4c2da6 NC |
1111 | branch table. Make sure we avoid even that small overhead for |
1112 | the common case of lower case variable names. */ | |
9431620d NC |
1113 | } else |
1114 | #endif | |
1115 | { | |
b464bac0 | 1116 | const char * const name2 = name + 1; |
cc4c2da6 NC |
1117 | switch (*name) { |
1118 | case 'A': | |
1119 | if (strEQ(name2, "RGV")) { | |
1120 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; | |
1121 | } | |
7b8203e3 YST |
1122 | else if (strEQ(name2, "RGVOUT")) { |
1123 | GvMULTI_on(gv); | |
1124 | } | |
cc4c2da6 NC |
1125 | break; |
1126 | case 'E': | |
1127 | if (strnEQ(name2, "XPORT", 5)) | |
1128 | GvMULTI_on(gv); | |
1129 | break; | |
1130 | case 'I': | |
1131 | if (strEQ(name2, "SA")) { | |
9d4ba2ae | 1132 | AV* const av = GvAVn(gv); |
cc4c2da6 | 1133 | GvMULTI_on(gv); |
bd61b366 | 1134 | sv_magic((SV*)av, (SV*)gv, PERL_MAGIC_isa, NULL, 0); |
cc4c2da6 NC |
1135 | /* NOTE: No support for tied ISA */ |
1136 | if ((add & GV_ADDMULTI) && strEQ(nambeg,"AnyDBM_File::ISA") | |
1137 | && AvFILLp(av) == -1) | |
1138 | { | |
e1ec3a88 | 1139 | const char *pname; |
cc4c2da6 | 1140 | av_push(av, newSVpvn(pname = "NDBM_File",9)); |
da51bb9b | 1141 | gv_stashpvn(pname, 9, GV_ADD); |
cc4c2da6 | 1142 | av_push(av, newSVpvn(pname = "DB_File",7)); |
da51bb9b | 1143 | gv_stashpvn(pname, 7, GV_ADD); |
cc4c2da6 | 1144 | av_push(av, newSVpvn(pname = "GDBM_File",9)); |
da51bb9b | 1145 | gv_stashpvn(pname, 9, GV_ADD); |
cc4c2da6 | 1146 | av_push(av, newSVpvn(pname = "SDBM_File",9)); |
da51bb9b | 1147 | gv_stashpvn(pname, 9, GV_ADD); |
cc4c2da6 | 1148 | av_push(av, newSVpvn(pname = "ODBM_File",9)); |
da51bb9b | 1149 | gv_stashpvn(pname, 9, GV_ADD); |
cc4c2da6 NC |
1150 | } |
1151 | } | |
1152 | break; | |
1153 | case 'O': | |
1154 | if (strEQ(name2, "VERLOAD")) { | |
9d4ba2ae | 1155 | HV* const hv = GvHVn(gv); |
cc4c2da6 | 1156 | GvMULTI_on(gv); |
a0714e2c | 1157 | hv_magic(hv, NULL, PERL_MAGIC_overload); |
cc4c2da6 NC |
1158 | } |
1159 | break; | |
1160 | case 'S': | |
1161 | if (strEQ(name2, "IG")) { | |
1162 | HV *hv; | |
1163 | I32 i; | |
1164 | if (!PL_psig_ptr) { | |
a02a5408 JC |
1165 | Newxz(PL_psig_ptr, SIG_SIZE, SV*); |
1166 | Newxz(PL_psig_name, SIG_SIZE, SV*); | |
1167 | Newxz(PL_psig_pend, SIG_SIZE, int); | |
cc4c2da6 NC |
1168 | } |
1169 | GvMULTI_on(gv); | |
1170 | hv = GvHVn(gv); | |
a0714e2c | 1171 | hv_magic(hv, NULL, PERL_MAGIC_sig); |
cc4c2da6 | 1172 | for (i = 1; i < SIG_SIZE; i++) { |
551405c4 | 1173 | SV * const * const init = hv_fetch(hv, PL_sig_name[i], strlen(PL_sig_name[i]), 1); |
cc4c2da6 NC |
1174 | if (init) |
1175 | sv_setsv(*init, &PL_sv_undef); | |
1176 | PL_psig_ptr[i] = 0; | |
1177 | PL_psig_name[i] = 0; | |
1178 | PL_psig_pend[i] = 0; | |
1179 | } | |
1180 | } | |
1181 | break; | |
1182 | case 'V': | |
1183 | if (strEQ(name2, "ERSION")) | |
1184 | GvMULTI_on(gv); | |
1185 | break; | |
e5218da5 GA |
1186 | case '\003': /* $^CHILD_ERROR_NATIVE */ |
1187 | if (strEQ(name2, "HILD_ERROR_NATIVE")) | |
1188 | goto magicalize; | |
1189 | break; | |
cc4c2da6 NC |
1190 | case '\005': /* $^ENCODING */ |
1191 | if (strEQ(name2, "NCODING")) | |
1192 | goto magicalize; | |
1193 | break; | |
cde0cee5 YO |
1194 | case '\015': /* $^MATCH */ |
1195 | if (strEQ(name2, "ATCH")) | |
2fdbfb4d | 1196 | goto magicalize; |
cc4c2da6 NC |
1197 | case '\017': /* $^OPEN */ |
1198 | if (strEQ(name2, "PEN")) | |
1199 | goto magicalize; | |
1200 | break; | |
cde0cee5 YO |
1201 | case '\020': /* $^PREMATCH $^POSTMATCH */ |
1202 | if (strEQ(name2, "REMATCH") || strEQ(name2, "OSTMATCH")) | |
2fdbfb4d | 1203 | goto magicalize; |
cc4c2da6 NC |
1204 | case '\024': /* ${^TAINT} */ |
1205 | if (strEQ(name2, "AINT")) | |
1206 | goto ro_magicalize; | |
1207 | break; | |
7cebcbc0 | 1208 | case '\025': /* ${^UNICODE}, ${^UTF8LOCALE} */ |
a0288114 | 1209 | if (strEQ(name2, "NICODE")) |
cc4c2da6 | 1210 | goto ro_magicalize; |
a0288114 | 1211 | if (strEQ(name2, "TF8LOCALE")) |
7cebcbc0 | 1212 | goto ro_magicalize; |
e07ea26a NC |
1213 | if (strEQ(name2, "TF8CACHE")) |
1214 | goto magicalize; | |
cc4c2da6 NC |
1215 | break; |
1216 | case '\027': /* $^WARNING_BITS */ | |
1217 | if (strEQ(name2, "ARNING_BITS")) | |
1218 | goto magicalize; | |
1219 | break; | |
1220 | case '1': | |
1221 | case '2': | |
1222 | case '3': | |
1223 | case '4': | |
1224 | case '5': | |
1225 | case '6': | |
1226 | case '7': | |
1227 | case '8': | |
1228 | case '9': | |
85e6fe83 | 1229 | { |
2fdbfb4d AB |
1230 | /* Ensures that we have an all-digit variable, ${"1foo"} fails |
1231 | this test */ | |
1232 | /* This snippet is taken from is_gv_magical */ | |
cc4c2da6 NC |
1233 | const char *end = name + len; |
1234 | while (--end > name) { | |
2fdbfb4d | 1235 | if (!isDIGIT(*end)) return gv; |
cc4c2da6 | 1236 | } |
2fdbfb4d | 1237 | goto magicalize; |
1d7c1841 | 1238 | } |
dc437b57 | 1239 | } |
93a17b20 | 1240 | } |
392db708 NC |
1241 | } else { |
1242 | /* Names of length 1. (Or 0. But name is NUL terminated, so that will | |
1243 | be case '\0' in this switch statement (ie a default case) */ | |
cc4c2da6 NC |
1244 | switch (*name) { |
1245 | case '&': | |
1246 | case '`': | |
1247 | case '\'': | |
1248 | if ( | |
1249 | sv_type == SVt_PVAV || | |
1250 | sv_type == SVt_PVHV || | |
1251 | sv_type == SVt_PVCV || | |
1252 | sv_type == SVt_PVFM || | |
1253 | sv_type == SVt_PVIO | |
1254 | ) { break; } | |
1255 | PL_sawampersand = TRUE; | |
2fdbfb4d | 1256 | goto magicalize; |
cc4c2da6 NC |
1257 | |
1258 | case ':': | |
c69033f2 | 1259 | sv_setpv(GvSVn(gv),PL_chopset); |
cc4c2da6 NC |
1260 | goto magicalize; |
1261 | ||
1262 | case '?': | |
ff0cee69 | 1263 | #ifdef COMPLEX_STATUS |
c69033f2 | 1264 | SvUPGRADE(GvSVn(gv), SVt_PVLV); |
ff0cee69 | 1265 | #endif |
cc4c2da6 | 1266 | goto magicalize; |
ff0cee69 | 1267 | |
cc4c2da6 | 1268 | case '!': |
67261566 | 1269 | GvMULTI_on(gv); |
44a2ac75 | 1270 | /* If %! has been used, automatically load Errno.pm. */ |
d2c93421 | 1271 | |
c69033f2 | 1272 | sv_magic(GvSVn(gv), (SV*)gv, PERL_MAGIC_sv, name, len); |
d2c93421 | 1273 | |
44a2ac75 | 1274 | /* magicalization must be done before require_tie_mod is called */ |
67261566 | 1275 | if (sv_type == SVt_PVHV || sv_type == SVt_PVGV) |
44a2ac75 | 1276 | require_tie_mod(gv, "!", newSVpvs("Errno"), "TIEHASH", 1); |
d2c93421 | 1277 | |
6cef1e77 | 1278 | break; |
cc4c2da6 | 1279 | case '-': |
44a2ac75 YO |
1280 | case '+': |
1281 | GvMULTI_on(gv); /* no used once warnings here */ | |
1282 | { | |
44a2ac75 | 1283 | AV* const av = GvAVn(gv); |
67261566 | 1284 | SV* const avc = (*name == '+') ? (SV*)av : NULL; |
44a2ac75 | 1285 | |
67261566 | 1286 | sv_magic((SV*)av, avc, PERL_MAGIC_regdata, NULL, 0); |
44a2ac75 | 1287 | sv_magic(GvSVn(gv), (SV*)gv, PERL_MAGIC_sv, name, len); |
67261566 | 1288 | if (avc) |
44a2ac75 | 1289 | SvREADONLY_on(GvSVn(gv)); |
44a2ac75 | 1290 | SvREADONLY_on(av); |
67261566 YO |
1291 | |
1292 | if (sv_type == SVt_PVHV || sv_type == SVt_PVGV) | |
192b9cd1 | 1293 | require_tie_mod(gv, name, newSVpvs("Tie::Hash::NamedCapture"), "TIEHASH", 0); |
67261566 | 1294 | |
80305961 | 1295 | break; |
cc4c2da6 NC |
1296 | } |
1297 | case '*': | |
cc4c2da6 | 1298 | case '#': |
fafcdf9e | 1299 | if (sv_type == SVt_PV && ckWARN2_d(WARN_DEPRECATED, WARN_SYNTAX)) |
cc4c2da6 | 1300 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
8ae1fe26 RGS |
1301 | "$%c is no longer supported", *name); |
1302 | break; | |
cc4c2da6 | 1303 | case '|': |
c69033f2 | 1304 | sv_setiv(GvSVn(gv), (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0); |
cc4c2da6 NC |
1305 | goto magicalize; |
1306 | ||
b3ca2e83 NC |
1307 | case '\010': /* $^H */ |
1308 | { | |
1309 | HV *const hv = GvHVn(gv); | |
1310 | hv_magic(hv, NULL, PERL_MAGIC_hints); | |
1311 | } | |
1312 | goto magicalize; | |
cc4c2da6 | 1313 | case '\023': /* $^S */ |
2fdbfb4d AB |
1314 | ro_magicalize: |
1315 | SvREADONLY_on(GvSVn(gv)); | |
1316 | /* FALL THROUGH */ | |
cc4c2da6 NC |
1317 | case '1': |
1318 | case '2': | |
1319 | case '3': | |
1320 | case '4': | |
1321 | case '5': | |
1322 | case '6': | |
1323 | case '7': | |
1324 | case '8': | |
1325 | case '9': | |
cc4c2da6 NC |
1326 | case '[': |
1327 | case '^': | |
1328 | case '~': | |
1329 | case '=': | |
1330 | case '%': | |
1331 | case '.': | |
1332 | case '(': | |
1333 | case ')': | |
1334 | case '<': | |
1335 | case '>': | |
1336 | case ',': | |
1337 | case '\\': | |
1338 | case '/': | |
1339 | case '\001': /* $^A */ | |
1340 | case '\003': /* $^C */ | |
1341 | case '\004': /* $^D */ | |
1342 | case '\005': /* $^E */ | |
1343 | case '\006': /* $^F */ | |
cc4c2da6 NC |
1344 | case '\011': /* $^I, NOT \t in EBCDIC */ |
1345 | case '\016': /* $^N */ | |
1346 | case '\017': /* $^O */ | |
1347 | case '\020': /* $^P */ | |
1348 | case '\024': /* $^T */ | |
1349 | case '\027': /* $^W */ | |
1350 | magicalize: | |
c69033f2 | 1351 | sv_magic(GvSVn(gv), (SV*)gv, PERL_MAGIC_sv, name, len); |
cc4c2da6 | 1352 | break; |
e521374c | 1353 | |
cc4c2da6 | 1354 | case '\014': /* $^L */ |
c69033f2 NC |
1355 | sv_setpvn(GvSVn(gv),"\f",1); |
1356 | PL_formfeed = GvSVn(gv); | |
463ee0b2 | 1357 | break; |
cc4c2da6 | 1358 | case ';': |
c69033f2 | 1359 | sv_setpvn(GvSVn(gv),"\034",1); |
463ee0b2 | 1360 | break; |
cc4c2da6 NC |
1361 | case ']': |
1362 | { | |
c69033f2 | 1363 | SV * const sv = GvSVn(gv); |
d7aa5382 | 1364 | if (!sv_derived_from(PL_patchlevel, "version")) |
ac0e6a2f | 1365 | upg_version(PL_patchlevel, TRUE); |
7d54d38e SH |
1366 | GvSV(gv) = vnumify(PL_patchlevel); |
1367 | SvREADONLY_on(GvSV(gv)); | |
1368 | SvREFCNT_dec(sv); | |
93a17b20 LW |
1369 | } |
1370 | break; | |
cc4c2da6 NC |
1371 | case '\026': /* $^V */ |
1372 | { | |
c69033f2 | 1373 | SV * const sv = GvSVn(gv); |
f9be5ac8 DM |
1374 | GvSV(gv) = new_version(PL_patchlevel); |
1375 | SvREADONLY_on(GvSV(gv)); | |
1376 | SvREFCNT_dec(sv); | |
16070b82 GS |
1377 | } |
1378 | break; | |
cc4c2da6 | 1379 | } |
79072805 | 1380 | } |
93a17b20 | 1381 | return gv; |
79072805 LW |
1382 | } |
1383 | ||
1384 | void | |
35a4481c | 1385 | Perl_gv_fullname4(pTHX_ SV *sv, const GV *gv, const char *prefix, bool keepmain) |
43693395 | 1386 | { |
35a4481c | 1387 | const char *name; |
7423f6db | 1388 | STRLEN namelen; |
35a4481c | 1389 | const HV * const hv = GvSTASH(gv); |
43693395 | 1390 | if (!hv) { |
0c34ef67 | 1391 | SvOK_off(sv); |
43693395 GS |
1392 | return; |
1393 | } | |
666ea192 | 1394 | sv_setpv(sv, prefix ? prefix : ""); |
a0288114 | 1395 | |
bfcb3514 | 1396 | name = HvNAME_get(hv); |
7423f6db NC |
1397 | if (name) { |
1398 | namelen = HvNAMELEN_get(hv); | |
1399 | } else { | |
e27ad1f2 | 1400 | name = "__ANON__"; |
7423f6db NC |
1401 | namelen = 8; |
1402 | } | |
a0288114 | 1403 | |
e27ad1f2 | 1404 | if (keepmain || strNE(name, "main")) { |
7423f6db | 1405 | sv_catpvn(sv,name,namelen); |
396482e1 | 1406 | sv_catpvs(sv,"::"); |
43693395 | 1407 | } |
257984c0 | 1408 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); |
43693395 GS |
1409 | } |
1410 | ||
1411 | void | |
35a4481c | 1412 | Perl_gv_efullname4(pTHX_ SV *sv, const GV *gv, const char *prefix, bool keepmain) |
43693395 | 1413 | { |
46c461b5 AL |
1414 | const GV * const egv = GvEGV(gv); |
1415 | gv_fullname4(sv, egv ? egv : gv, prefix, keepmain); | |
43693395 GS |
1416 | } |
1417 | ||
79072805 | 1418 | IO * |
864dbfa3 | 1419 | Perl_newIO(pTHX) |
79072805 | 1420 | { |
97aff369 | 1421 | dVAR; |
8990e307 | 1422 | GV *iogv; |
b9f83d2f | 1423 | IO * const io = (IO*)newSV_type(SVt_PVIO); |
158623e7 NC |
1424 | /* This used to read SvREFCNT(io) = 1; |
1425 | It's not clear why the reference count needed an explicit reset. NWC | |
1426 | */ | |
1427 | assert (SvREFCNT(io) == 1); | |
8990e307 | 1428 | SvOBJECT_on(io); |
b464bac0 | 1429 | /* Clear the stashcache because a new IO could overrule a package name */ |
081fc587 | 1430 | hv_clear(PL_stashcache); |
71315bf2 | 1431 | iogv = gv_fetchpvs("FileHandle::", 0, SVt_PVHV); |
5f2d631d GS |
1432 | /* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */ |
1433 | if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv)))) | |
71315bf2 | 1434 | iogv = gv_fetchpvs("IO::Handle::", GV_ADD, SVt_PVHV); |
b162af07 | 1435 | SvSTASH_set(io, (HV*)SvREFCNT_inc(GvHV(iogv))); |
79072805 LW |
1436 | return io; |
1437 | } | |
1438 | ||
1439 | void | |
1146e912 | 1440 | Perl_gv_check(pTHX_ const HV *stash) |
79072805 | 1441 | { |
97aff369 | 1442 | dVAR; |
79072805 | 1443 | register I32 i; |
463ee0b2 | 1444 | |
8990e307 LW |
1445 | if (!HvARRAY(stash)) |
1446 | return; | |
a0d0e21e | 1447 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
e1ec3a88 | 1448 | const HE *entry; |
dc437b57 | 1449 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
b7787f18 AL |
1450 | register GV *gv; |
1451 | HV *hv; | |
dc437b57 | 1452 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && |
b862623f | 1453 | (gv = (GV*)HeVAL(entry)) && isGV(gv) && (hv = GvHV(gv))) |
a0d0e21e | 1454 | { |
19b6c847 | 1455 | if (hv != PL_defstash && hv != stash) |
a0d0e21e LW |
1456 | gv_check(hv); /* nested package */ |
1457 | } | |
dc437b57 | 1458 | else if (isALPHA(*HeKEY(entry))) { |
e1ec3a88 | 1459 | const char *file; |
dc437b57 | 1460 | gv = (GV*)HeVAL(entry); |
55d729e4 | 1461 | if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv)) |
463ee0b2 | 1462 | continue; |
1d7c1841 | 1463 | file = GvFILE(gv); |
1d7c1841 GS |
1464 | CopLINE_set(PL_curcop, GvLINE(gv)); |
1465 | #ifdef USE_ITHREADS | |
dd374669 | 1466 | CopFILE(PL_curcop) = (char *)file; /* set for warning */ |
1d7c1841 | 1467 | #else |
9bde8eb0 NC |
1468 | CopFILEGV(PL_curcop) |
1469 | = gv_fetchfile_flags(file, HEK_LEN(GvFILE_HEK(gv)), 0); | |
1d7c1841 | 1470 | #endif |
9014280d | 1471 | Perl_warner(aTHX_ packWARN(WARN_ONCE), |
599cee73 | 1472 | "Name \"%s::%s\" used only once: possible typo", |
bfcb3514 | 1473 | HvNAME_get(stash), GvNAME(gv)); |
463ee0b2 | 1474 | } |
79072805 LW |
1475 | } |
1476 | } | |
1477 | } | |
1478 | ||
1479 | GV * | |
e1ec3a88 | 1480 | Perl_newGVgen(pTHX_ const char *pack) |
79072805 | 1481 | { |
97aff369 | 1482 | dVAR; |
cea2e8a9 | 1483 | return gv_fetchpv(Perl_form(aTHX_ "%s::_GEN_%ld", pack, (long)PL_gensym++), |
6fd99bb3 | 1484 | GV_ADD, SVt_PVGV); |
79072805 LW |
1485 | } |
1486 | ||
1487 | /* hopefully this is only called on local symbol table entries */ | |
1488 | ||
1489 | GP* | |
864dbfa3 | 1490 | Perl_gp_ref(pTHX_ GP *gp) |
79072805 | 1491 | { |
97aff369 | 1492 | dVAR; |
1d7c1841 | 1493 | if (!gp) |
d4c19fe8 | 1494 | return NULL; |
79072805 | 1495 | gp->gp_refcnt++; |
44a8e56a | 1496 | if (gp->gp_cv) { |
1497 | if (gp->gp_cvgen) { | |
e1a479c5 BB |
1498 | /* If the GP they asked for a reference to contains |
1499 | a method cache entry, clear it first, so that we | |
1500 | don't infect them with our cached entry */ | |
44a8e56a | 1501 | SvREFCNT_dec(gp->gp_cv); |
601f1833 | 1502 | gp->gp_cv = NULL; |
44a8e56a | 1503 | gp->gp_cvgen = 0; |
1504 | } | |
44a8e56a | 1505 | } |
79072805 | 1506 | return gp; |
79072805 LW |
1507 | } |
1508 | ||
1509 | void | |
864dbfa3 | 1510 | Perl_gp_free(pTHX_ GV *gv) |
79072805 | 1511 | { |
97aff369 | 1512 | dVAR; |
79072805 LW |
1513 | GP* gp; |
1514 | ||
f7877b28 | 1515 | if (!gv || !isGV_with_GP(gv) || !(gp = GvGP(gv))) |
79072805 | 1516 | return; |
f248d071 GS |
1517 | if (gp->gp_refcnt == 0) { |
1518 | if (ckWARN_d(WARN_INTERNAL)) | |
9014280d | 1519 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
472d47bc SB |
1520 | "Attempt to free unreferenced glob pointers" |
1521 | pTHX__FORMAT pTHX__VALUE); | |
79072805 LW |
1522 | return; |
1523 | } | |
748a9306 LW |
1524 | if (--gp->gp_refcnt > 0) { |
1525 | if (gp->gp_egv == gv) | |
1526 | gp->gp_egv = 0; | |
dd38834b | 1527 | GvGP(gv) = 0; |
79072805 | 1528 | return; |
748a9306 | 1529 | } |
79072805 | 1530 | |
c9ce39a9 RGS |
1531 | if (gp->gp_file_hek) |
1532 | unshare_hek(gp->gp_file_hek); | |
c9da69fb AL |
1533 | SvREFCNT_dec(gp->gp_sv); |
1534 | SvREFCNT_dec(gp->gp_av); | |
bfcb3514 NC |
1535 | /* FIXME - another reference loop GV -> symtab -> GV ? |
1536 | Somehow gp->gp_hv can end up pointing at freed garbage. */ | |
1537 | if (gp->gp_hv && SvTYPE(gp->gp_hv) == SVt_PVHV) { | |
bfcb3514 NC |
1538 | const char *hvname = HvNAME_get(gp->gp_hv); |
1539 | if (PL_stashcache && hvname) | |
04fe65b0 | 1540 | (void)hv_delete(PL_stashcache, hvname, HvNAMELEN_get(gp->gp_hv), |
7423f6db | 1541 | G_DISCARD); |
bfcb3514 | 1542 | SvREFCNT_dec(gp->gp_hv); |
13207a71 | 1543 | } |
c9da69fb AL |
1544 | SvREFCNT_dec(gp->gp_io); |
1545 | SvREFCNT_dec(gp->gp_cv); | |
1546 | SvREFCNT_dec(gp->gp_form); | |
748a9306 | 1547 | |
79072805 LW |
1548 | Safefree(gp); |
1549 | GvGP(gv) = 0; | |
1550 | } | |
1551 | ||
d460ef45 NIS |
1552 | int |
1553 | Perl_magic_freeovrld(pTHX_ SV *sv, MAGIC *mg) | |
1554 | { | |
53c1dcc0 AL |
1555 | AMT * const amtp = (AMT*)mg->mg_ptr; |
1556 | PERL_UNUSED_ARG(sv); | |
dd374669 | 1557 | |
d460ef45 NIS |
1558 | if (amtp && AMT_AMAGIC(amtp)) { |
1559 | int i; | |
1560 | for (i = 1; i < NofAMmeth; i++) { | |
53c1dcc0 | 1561 | CV * const cv = amtp->table[i]; |
b37c2d43 | 1562 | if (cv) { |
d460ef45 | 1563 | SvREFCNT_dec((SV *) cv); |
601f1833 | 1564 | amtp->table[i] = NULL; |
d460ef45 NIS |
1565 | } |
1566 | } | |
1567 | } | |
1568 | return 0; | |
1569 | } | |
1570 | ||
a0d0e21e LW |
1571 | /* Updates and caches the CV's */ |
1572 | ||
1573 | bool | |
864dbfa3 | 1574 | Perl_Gv_AMupdate(pTHX_ HV *stash) |
a0d0e21e | 1575 | { |
97aff369 | 1576 | dVAR; |
53c1dcc0 | 1577 | MAGIC* const mg = mg_find((SV*)stash, PERL_MAGIC_overload_table); |
a6006777 | 1578 | AMT amt; |
9b439311 | 1579 | const struct mro_meta* stash_meta = HvMROMETA(stash); |
e1a479c5 | 1580 | U32 newgen; |
a0d0e21e | 1581 | |
9b439311 | 1582 | newgen = PL_sub_generation + stash_meta->pkg_gen + stash_meta->cache_gen; |
14899595 NC |
1583 | if (mg) { |
1584 | const AMT * const amtp = (AMT*)mg->mg_ptr; | |
1585 | if (amtp->was_ok_am == PL_amagic_generation | |
e1a479c5 | 1586 | && amtp->was_ok_sub == newgen) { |
14899595 NC |
1587 | return (bool)AMT_OVERLOADED(amtp); |
1588 | } | |
1589 | sv_unmagic((SV*)stash, PERL_MAGIC_overload_table); | |
1590 | } | |
a0d0e21e | 1591 | |
bfcb3514 | 1592 | DEBUG_o( Perl_deb(aTHX_ "Recalcing overload magic in package %s\n",HvNAME_get(stash)) ); |
a0d0e21e | 1593 | |
d460ef45 | 1594 | Zero(&amt,1,AMT); |
3280af22 | 1595 | amt.was_ok_am = PL_amagic_generation; |
e1a479c5 | 1596 | amt.was_ok_sub = newgen; |
a6006777 | 1597 | amt.fallback = AMGfallNO; |
1598 | amt.flags = 0; | |
1599 | ||
a6006777 | 1600 | { |
32251b26 IZ |
1601 | int filled = 0, have_ovl = 0; |
1602 | int i, lim = 1; | |
a6006777 | 1603 | |
22c35a8c | 1604 | /* Work with "fallback" key, which we assume to be first in PL_AMG_names */ |
a6006777 | 1605 | |
89ffc314 | 1606 | /* Try to find via inheritance. */ |
53c1dcc0 AL |
1607 | GV *gv = gv_fetchmeth(stash, PL_AMG_names[0], 2, -1); |
1608 | SV * const sv = gv ? GvSV(gv) : NULL; | |
1609 | CV* cv; | |
89ffc314 IZ |
1610 | |
1611 | if (!gv) | |
32251b26 | 1612 | lim = DESTROY_amg; /* Skip overloading entries. */ |
c69033f2 NC |
1613 | #ifdef PERL_DONT_CREATE_GVSV |
1614 | else if (!sv) { | |
6f207bd3 | 1615 | NOOP; /* Equivalent to !SvTRUE and !SvOK */ |
c69033f2 NC |
1616 | } |
1617 | #endif | |
89ffc314 IZ |
1618 | else if (SvTRUE(sv)) |
1619 | amt.fallback=AMGfallYES; | |
1620 | else if (SvOK(sv)) | |
1621 | amt.fallback=AMGfallNEVER; | |
a6006777 | 1622 | |
32251b26 | 1623 | for (i = 1; i < lim; i++) |
601f1833 | 1624 | amt.table[i] = NULL; |
32251b26 | 1625 | for (; i < NofAMmeth; i++) { |
6136c704 | 1626 | const char * const cooky = PL_AMG_names[i]; |
32251b26 | 1627 | /* Human-readable form, for debugging: */ |
6136c704 | 1628 | const char * const cp = (i >= DESTROY_amg ? cooky : AMG_id2name(i)); |
d279ab82 | 1629 | const STRLEN l = PL_AMG_namelens[i]; |
89ffc314 | 1630 | |
a0288114 | 1631 | DEBUG_o( Perl_deb(aTHX_ "Checking overloading of \"%s\" in package \"%.256s\"\n", |
bfcb3514 | 1632 | cp, HvNAME_get(stash)) ); |
611c1e95 IZ |
1633 | /* don't fill the cache while looking up! |
1634 | Creation of inheritance stubs in intermediate packages may | |
1635 | conflict with the logic of runtime method substitution. | |
1636 | Indeed, for inheritance A -> B -> C, if C overloads "+0", | |
1637 | then we could have created stubs for "(+0" in A and C too. | |
1638 | But if B overloads "bool", we may want to use it for | |
1639 | numifying instead of C's "+0". */ | |
1640 | if (i >= DESTROY_amg) | |
1641 | gv = Perl_gv_fetchmeth_autoload(aTHX_ stash, cooky, l, 0); | |
1642 | else /* Autoload taken care of below */ | |
1643 | gv = Perl_gv_fetchmeth(aTHX_ stash, cooky, l, -1); | |
46fc3d4c | 1644 | cv = 0; |
89ffc314 | 1645 | if (gv && (cv = GvCV(gv))) { |
bfcb3514 | 1646 | const char *hvname; |
44a8e56a | 1647 | if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil") |
bfcb3514 | 1648 | && strEQ(hvname = HvNAME_get(GvSTASH(CvGV(cv))), "overload")) { |
611c1e95 IZ |
1649 | /* This is a hack to support autoloading..., while |
1650 | knowing *which* methods were declared as overloaded. */ | |
44a8e56a | 1651 | /* GvSV contains the name of the method. */ |
6136c704 | 1652 | GV *ngv = NULL; |
c69033f2 | 1653 | SV *gvsv = GvSV(gv); |
a0288114 AL |
1654 | |
1655 | DEBUG_o( Perl_deb(aTHX_ "Resolving method \"%"SVf256\ | |
1656 | "\" for overloaded \"%s\" in package \"%.256s\"\n", | |
ca0270c4 | 1657 | (void*)GvSV(gv), cp, hvname) ); |
c69033f2 NC |
1658 | if (!gvsv || !SvPOK(gvsv) |
1659 | || !(ngv = gv_fetchmethod_autoload(stash, SvPVX_const(gvsv), | |
dc848c6f | 1660 | FALSE))) |
1661 | { | |
a0288114 | 1662 | /* Can be an import stub (created by "can"). */ |
666ea192 | 1663 | const char * const name = (gvsv && SvPOK(gvsv)) ? SvPVX_const(gvsv) : "???"; |
a0288114 AL |
1664 | Perl_croak(aTHX_ "%s method \"%.256s\" overloading \"%s\" "\ |
1665 | "in package \"%.256s\"", | |
35c1215d NC |
1666 | (GvCVGEN(gv) ? "Stub found while resolving" |
1667 | : "Can't resolve"), | |
bfcb3514 | 1668 | name, cp, hvname); |
44a8e56a | 1669 | } |
dc848c6f | 1670 | cv = GvCV(gv = ngv); |
44a8e56a | 1671 | } |
b464bac0 | 1672 | DEBUG_o( Perl_deb(aTHX_ "Overloading \"%s\" in package \"%.256s\" via \"%.256s::%.256s\"\n", |
bfcb3514 | 1673 | cp, HvNAME_get(stash), HvNAME_get(GvSTASH(CvGV(cv))), |
44a8e56a | 1674 | GvNAME(CvGV(cv))) ); |
1675 | filled = 1; | |
32251b26 IZ |
1676 | if (i < DESTROY_amg) |
1677 | have_ovl = 1; | |
611c1e95 IZ |
1678 | } else if (gv) { /* Autoloaded... */ |
1679 | cv = (CV*)gv; | |
1680 | filled = 1; | |
44a8e56a | 1681 | } |
b37c2d43 | 1682 | amt.table[i]=(CV*)SvREFCNT_inc_simple(cv); |
a0d0e21e | 1683 | } |
a0d0e21e | 1684 | if (filled) { |
a6006777 | 1685 | AMT_AMAGIC_on(&amt); |
32251b26 IZ |
1686 | if (have_ovl) |
1687 | AMT_OVERLOADED_on(&amt); | |
14befaf4 DM |
1688 | sv_magic((SV*)stash, 0, PERL_MAGIC_overload_table, |
1689 | (char*)&amt, sizeof(AMT)); | |
32251b26 | 1690 | return have_ovl; |
a0d0e21e LW |
1691 | } |
1692 | } | |
a6006777 | 1693 | /* Here we have no table: */ |
9cbac4c7 | 1694 | /* no_table: */ |
a6006777 | 1695 | AMT_AMAGIC_off(&amt); |
14befaf4 DM |
1696 | sv_magic((SV*)stash, 0, PERL_MAGIC_overload_table, |
1697 | (char*)&amt, sizeof(AMTS)); | |
a0d0e21e LW |
1698 | return FALSE; |
1699 | } | |
1700 | ||
32251b26 IZ |
1701 | |
1702 | CV* | |
1703 | Perl_gv_handler(pTHX_ HV *stash, I32 id) | |
1704 | { | |
97aff369 | 1705 | dVAR; |
3f8f4626 | 1706 | MAGIC *mg; |
32251b26 | 1707 | AMT *amtp; |
e1a479c5 | 1708 | U32 newgen; |
9b439311 | 1709 | struct mro_meta* stash_meta; |
32251b26 | 1710 | |
bfcb3514 | 1711 | if (!stash || !HvNAME_get(stash)) |
601f1833 | 1712 | return NULL; |
e1a479c5 | 1713 | |
9b439311 BB |
1714 | stash_meta = HvMROMETA(stash); |
1715 | newgen = PL_sub_generation + stash_meta->pkg_gen + stash_meta->cache_gen; | |
e1a479c5 | 1716 | |
14befaf4 | 1717 | mg = mg_find((SV*)stash, PERL_MAGIC_overload_table); |
32251b26 IZ |
1718 | if (!mg) { |
1719 | do_update: | |
1720 | Gv_AMupdate(stash); | |
14befaf4 | 1721 | mg = mg_find((SV*)stash, PERL_MAGIC_overload_table); |
32251b26 | 1722 | } |
a9fd4e40 | 1723 | assert(mg); |
32251b26 IZ |
1724 | amtp = (AMT*)mg->mg_ptr; |
1725 | if ( amtp->was_ok_am != PL_amagic_generation | |
e1a479c5 | 1726 | || amtp->was_ok_sub != newgen ) |
32251b26 | 1727 | goto do_update; |
3ad83ce7 | 1728 | if (AMT_AMAGIC(amtp)) { |
b7787f18 | 1729 | CV * const ret = amtp->table[id]; |
3ad83ce7 AMS |
1730 | if (ret && isGV(ret)) { /* Autoloading stab */ |
1731 | /* Passing it through may have resulted in a warning | |
1732 | "Inherited AUTOLOAD for a non-method deprecated", since | |
1733 | our caller is going through a function call, not a method call. | |
1734 | So return the CV for AUTOLOAD, setting $AUTOLOAD. */ | |
890ce7af | 1735 | GV * const gv = gv_fetchmethod(stash, PL_AMG_names[id]); |
3ad83ce7 AMS |
1736 | |
1737 | if (gv && GvCV(gv)) | |
1738 | return GvCV(gv); | |
1739 | } | |
1740 | return ret; | |
1741 | } | |
a0288114 | 1742 | |
601f1833 | 1743 | return NULL; |
32251b26 IZ |
1744 | } |
1745 | ||
1746 | ||
a0d0e21e | 1747 | SV* |
864dbfa3 | 1748 | Perl_amagic_call(pTHX_ SV *left, SV *right, int method, int flags) |
a0d0e21e | 1749 | { |
27da23d5 | 1750 | dVAR; |
b267980d | 1751 | MAGIC *mg; |
9c5ffd7c | 1752 | CV *cv=NULL; |
a0d0e21e | 1753 | CV **cvp=NULL, **ocvp=NULL; |
9c5ffd7c | 1754 | AMT *amtp=NULL, *oamtp=NULL; |
b464bac0 AL |
1755 | int off = 0, off1, lr = 0, notfound = 0; |
1756 | int postpr = 0, force_cpy = 0; | |
1757 | int assign = AMGf_assign & flags; | |
1758 | const int assignshift = assign ? 1 : 0; | |
497b47a8 JH |
1759 | #ifdef DEBUGGING |
1760 | int fl=0; | |
497b47a8 | 1761 | #endif |
25716404 | 1762 | HV* stash=NULL; |
a0d0e21e | 1763 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) |
25716404 GS |
1764 | && (stash = SvSTASH(SvRV(left))) |
1765 | && (mg = mg_find((SV*)stash, PERL_MAGIC_overload_table)) | |
b267980d | 1766 | && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
a6006777 | 1767 | ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table |
d4c19fe8 | 1768 | : NULL)) |
b267980d | 1769 | && ((cv = cvp[off=method+assignshift]) |
748a9306 LW |
1770 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to |
1771 | * usual method */ | |
497b47a8 JH |
1772 | ( |
1773 | #ifdef DEBUGGING | |
1774 | fl = 1, | |
a0288114 | 1775 | #endif |
497b47a8 | 1776 | cv = cvp[off=method])))) { |
a0d0e21e LW |
1777 | lr = -1; /* Call method for left argument */ |
1778 | } else { | |
1779 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { | |
1780 | int logic; | |
1781 | ||
1782 | /* look for substituted methods */ | |
ee239bfe | 1783 | /* In all the covered cases we should be called with assign==0. */ |
a0d0e21e LW |
1784 | switch (method) { |
1785 | case inc_amg: | |
ee239bfe IZ |
1786 | force_cpy = 1; |
1787 | if ((cv = cvp[off=add_ass_amg]) | |
1788 | || ((cv = cvp[off = add_amg]) && (force_cpy = 0, postpr = 1))) { | |
3280af22 | 1789 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1790 | } |
1791 | break; | |
1792 | case dec_amg: | |
ee239bfe IZ |
1793 | force_cpy = 1; |
1794 | if ((cv = cvp[off = subtr_ass_amg]) | |
1795 | || ((cv = cvp[off = subtr_amg]) && (force_cpy = 0, postpr=1))) { | |
3280af22 | 1796 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1797 | } |
1798 | break; | |
1799 | case bool__amg: | |
1800 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); | |
1801 | break; | |
1802 | case numer_amg: | |
1803 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); | |
1804 | break; | |
1805 | case string_amg: | |
1806 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); | |
1807 | break; | |
b7787f18 AL |
1808 | case not_amg: |
1809 | (void)((cv = cvp[off=bool__amg]) | |
1810 | || (cv = cvp[off=numer_amg]) | |
1811 | || (cv = cvp[off=string_amg])); | |
1812 | postpr = 1; | |
1813 | break; | |
748a9306 LW |
1814 | case copy_amg: |
1815 | { | |
76e3520e GS |
1816 | /* |
1817 | * SV* ref causes confusion with the interpreter variable of | |
1818 | * the same name | |
1819 | */ | |
890ce7af | 1820 | SV* const tmpRef=SvRV(left); |
76e3520e | 1821 | if (!SvROK(tmpRef) && SvTYPE(tmpRef) <= SVt_PVMG) { |
fc36a67e | 1822 | /* |
1823 | * Just to be extra cautious. Maybe in some | |
1824 | * additional cases sv_setsv is safe, too. | |
1825 | */ | |
890ce7af | 1826 | SV* const newref = newSVsv(tmpRef); |
748a9306 | 1827 | SvOBJECT_on(newref); |
96d4b0ee NC |
1828 | /* As a bit of a source compatibility hack, SvAMAGIC() and |
1829 | friends dereference an RV, to behave the same was as when | |
1830 | overloading was stored on the reference, not the referant. | |
1831 | Hence we can't use SvAMAGIC_on() | |
1832 | */ | |
1833 | SvFLAGS(newref) |= SVf_AMAGIC; | |
b162af07 | 1834 | SvSTASH_set(newref, (HV*)SvREFCNT_inc(SvSTASH(tmpRef))); |
748a9306 LW |
1835 | return newref; |
1836 | } | |
1837 | } | |
1838 | break; | |
a0d0e21e | 1839 | case abs_amg: |
b267980d | 1840 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e | 1841 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
890ce7af | 1842 | SV* const nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e | 1843 | if (off1==lt_amg) { |
890ce7af | 1844 | SV* const lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1845 | lt_amg,AMGf_noright); |
1846 | logic = SvTRUE(lessp); | |
1847 | } else { | |
890ce7af | 1848 | SV* const lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1849 | ncmp_amg,AMGf_noright); |
1850 | logic = (SvNV(lessp) < 0); | |
1851 | } | |
1852 | if (logic) { | |
1853 | if (off==subtr_amg) { | |
1854 | right = left; | |
748a9306 | 1855 | left = nullsv; |
a0d0e21e LW |
1856 | lr = 1; |
1857 | } | |
1858 | } else { | |
1859 | return left; | |
1860 | } | |
1861 | } | |
1862 | break; | |
1863 | case neg_amg: | |
155aba94 | 1864 | if ((cv = cvp[off=subtr_amg])) { |
a0d0e21e LW |
1865 | right = left; |
1866 | left = sv_2mortal(newSViv(0)); | |
1867 | lr = 1; | |
1868 | } | |
1869 | break; | |
f216259d | 1870 | case int_amg: |
f5284f61 | 1871 | case iter_amg: /* XXXX Eventually should do to_gv. */ |
b267980d NIS |
1872 | /* FAIL safe */ |
1873 | return NULL; /* Delegate operation to standard mechanisms. */ | |
1874 | break; | |
f5284f61 IZ |
1875 | case to_sv_amg: |
1876 | case to_av_amg: | |
1877 | case to_hv_amg: | |
1878 | case to_gv_amg: | |
1879 | case to_cv_amg: | |
1880 | /* FAIL safe */ | |
b267980d | 1881 | return left; /* Delegate operation to standard mechanisms. */ |
f5284f61 | 1882 | break; |
a0d0e21e LW |
1883 | default: |
1884 | goto not_found; | |
1885 | } | |
1886 | if (!cv) goto not_found; | |
1887 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) | |
25716404 GS |
1888 | && (stash = SvSTASH(SvRV(right))) |
1889 | && (mg = mg_find((SV*)stash, PERL_MAGIC_overload_table)) | |
b267980d | 1890 | && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
a6006777 | 1891 | ? (amtp = (AMT*)mg->mg_ptr)->table |
d4c19fe8 | 1892 | : NULL)) |
a0d0e21e LW |
1893 | && (cv = cvp[off=method])) { /* Method for right |
1894 | * argument found */ | |
1895 | lr=1; | |
b267980d NIS |
1896 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
1897 | && (cvp=ocvp) && (lr = -1)) | |
a0d0e21e LW |
1898 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
1899 | && !(flags & AMGf_unary)) { | |
1900 | /* We look for substitution for | |
1901 | * comparison operations and | |
fc36a67e | 1902 | * concatenation */ |
a0d0e21e LW |
1903 | if (method==concat_amg || method==concat_ass_amg |
1904 | || method==repeat_amg || method==repeat_ass_amg) { | |
1905 | return NULL; /* Delegate operation to string conversion */ | |
1906 | } | |
1907 | off = -1; | |
1908 | switch (method) { | |
1909 | case lt_amg: | |
1910 | case le_amg: | |
1911 | case gt_amg: | |
1912 | case ge_amg: | |
1913 | case eq_amg: | |
1914 | case ne_amg: | |
1915 | postpr = 1; off=ncmp_amg; break; | |
1916 | case slt_amg: | |
1917 | case sle_amg: | |
1918 | case sgt_amg: | |
1919 | case sge_amg: | |
1920 | case seq_amg: | |
1921 | case sne_amg: | |
1922 | postpr = 1; off=scmp_amg; break; | |
1923 | } | |
1924 | if (off != -1) cv = cvp[off]; | |
1925 | if (!cv) { | |
1926 | goto not_found; | |
1927 | } | |
1928 | } else { | |
a6006777 | 1929 | not_found: /* No method found, either report or croak */ |
b267980d | 1930 | switch (method) { |
d11ee47c RD |
1931 | case lt_amg: |
1932 | case le_amg: | |
1933 | case gt_amg: | |
1934 | case ge_amg: | |
1935 | case eq_amg: | |
1936 | case ne_amg: | |
1937 | case slt_amg: | |
1938 | case sle_amg: | |
1939 | case sgt_amg: | |
1940 | case sge_amg: | |
1941 | case seq_amg: | |
1942 | case sne_amg: | |
1943 | postpr = 0; break; | |
b267980d NIS |
1944 | case to_sv_amg: |
1945 | case to_av_amg: | |
1946 | case to_hv_amg: | |
1947 | case to_gv_amg: | |
1948 | case to_cv_amg: | |
1949 | /* FAIL safe */ | |
1950 | return left; /* Delegate operation to standard mechanisms. */ | |
1951 | break; | |
1952 | } | |
a0d0e21e LW |
1953 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
1954 | notfound = 1; lr = -1; | |
1955 | } else if (cvp && (cv=cvp[nomethod_amg])) { | |
1956 | notfound = 1; lr = 1; | |
4cc0ca18 NC |
1957 | } else if ((amtp && amtp->fallback >= AMGfallYES) && !DEBUG_o_TEST) { |
1958 | /* Skip generating the "no method found" message. */ | |
1959 | return NULL; | |
a0d0e21e | 1960 | } else { |
46fc3d4c | 1961 | SV *msg; |
774d564b | 1962 | if (off==-1) off=method; |
b267980d | 1963 | msg = sv_2mortal(Perl_newSVpvf(aTHX_ |
a0288114 | 1964 | "Operation \"%s\": no method found,%sargument %s%s%s%s", |
89ffc314 | 1965 | AMG_id2name(method + assignshift), |
e7ea3e70 | 1966 | (flags & AMGf_unary ? " " : "\n\tleft "), |
b267980d | 1967 | SvAMAGIC(left)? |
a0d0e21e LW |
1968 | "in overloaded package ": |
1969 | "has no overloaded magic", | |
b267980d | 1970 | SvAMAGIC(left)? |
bfcb3514 | 1971 | HvNAME_get(SvSTASH(SvRV(left))): |
a0d0e21e | 1972 | "", |
b267980d | 1973 | SvAMAGIC(right)? |
e7ea3e70 | 1974 | ",\n\tright argument in overloaded package ": |
b267980d | 1975 | (flags & AMGf_unary |
e7ea3e70 IZ |
1976 | ? "" |
1977 | : ",\n\tright argument has no overloaded magic"), | |
b267980d | 1978 | SvAMAGIC(right)? |
bfcb3514 | 1979 | HvNAME_get(SvSTASH(SvRV(right))): |
46fc3d4c | 1980 | "")); |
a0d0e21e | 1981 | if (amtp && amtp->fallback >= AMGfallYES) { |
b15aece3 | 1982 | DEBUG_o( Perl_deb(aTHX_ "%s", SvPVX_const(msg)) ); |
a0d0e21e | 1983 | } else { |
be2597df | 1984 | Perl_croak(aTHX_ "%"SVf, SVfARG(msg)); |
a0d0e21e LW |
1985 | } |
1986 | return NULL; | |
1987 | } | |
ee239bfe | 1988 | force_cpy = force_cpy || assign; |
a0d0e21e LW |
1989 | } |
1990 | } | |
497b47a8 | 1991 | #ifdef DEBUGGING |
a0d0e21e | 1992 | if (!notfound) { |
497b47a8 | 1993 | DEBUG_o(Perl_deb(aTHX_ |
a0288114 | 1994 | "Overloaded operator \"%s\"%s%s%s:\n\tmethod%s found%s in package %s%s\n", |
497b47a8 JH |
1995 | AMG_id2name(off), |
1996 | method+assignshift==off? "" : | |
a0288114 | 1997 | " (initially \"", |
497b47a8 JH |
1998 | method+assignshift==off? "" : |
1999 | AMG_id2name(method+assignshift), | |
a0288114 | 2000 | method+assignshift==off? "" : "\")", |
497b47a8 JH |
2001 | flags & AMGf_unary? "" : |
2002 | lr==1 ? " for right argument": " for left argument", | |
2003 | flags & AMGf_unary? " for argument" : "", | |
bfcb3514 | 2004 | stash ? HvNAME_get(stash) : "null", |
497b47a8 | 2005 | fl? ",\n\tassignment variant used": "") ); |
ee239bfe | 2006 | } |
497b47a8 | 2007 | #endif |
748a9306 LW |
2008 | /* Since we use shallow copy during assignment, we need |
2009 | * to dublicate the contents, probably calling user-supplied | |
2010 | * version of copy operator | |
2011 | */ | |
ee239bfe IZ |
2012 | /* We need to copy in following cases: |
2013 | * a) Assignment form was called. | |
2014 | * assignshift==1, assign==T, method + 1 == off | |
2015 | * b) Increment or decrement, called directly. | |
2016 | * assignshift==0, assign==0, method + 0 == off | |
2017 | * c) Increment or decrement, translated to assignment add/subtr. | |
b267980d | 2018 | * assignshift==0, assign==T, |
ee239bfe IZ |
2019 | * force_cpy == T |
2020 | * d) Increment or decrement, translated to nomethod. | |
b267980d | 2021 | * assignshift==0, assign==0, |
ee239bfe IZ |
2022 | * force_cpy == T |
2023 | * e) Assignment form translated to nomethod. | |
2024 | * assignshift==1, assign==T, method + 1 != off | |
2025 | * force_cpy == T | |
2026 | */ | |
2027 | /* off is method, method+assignshift, or a result of opcode substitution. | |
2028 | * In the latter case assignshift==0, so only notfound case is important. | |
2029 | */ | |
2030 | if (( (method + assignshift == off) | |
2031 | && (assign || (method == inc_amg) || (method == dec_amg))) | |
2032 | || force_cpy) | |
2033 | RvDEEPCP(left); | |
a0d0e21e LW |
2034 | { |
2035 | dSP; | |
2036 | BINOP myop; | |
2037 | SV* res; | |
b7787f18 | 2038 | const bool oldcatch = CATCH_GET; |
a0d0e21e | 2039 | |
54310121 | 2040 | CATCH_SET(TRUE); |
a0d0e21e LW |
2041 | Zero(&myop, 1, BINOP); |
2042 | myop.op_last = (OP *) &myop; | |
b37c2d43 | 2043 | myop.op_next = NULL; |
54310121 | 2044 | myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED; |
a0d0e21e | 2045 | |
e788e7d3 | 2046 | PUSHSTACKi(PERLSI_OVERLOAD); |
a0d0e21e | 2047 | ENTER; |
462e5cf6 | 2048 | SAVEOP(); |
533c011a | 2049 | PL_op = (OP *) &myop; |
3280af22 | 2050 | if (PERLDB_SUB && PL_curstash != PL_debstash) |
533c011a | 2051 | PL_op->op_private |= OPpENTERSUB_DB; |
a0d0e21e | 2052 | PUTBACK; |
cea2e8a9 | 2053 | pp_pushmark(); |
a0d0e21e | 2054 | |
924508f0 | 2055 | EXTEND(SP, notfound + 5); |
a0d0e21e LW |
2056 | PUSHs(lr>0? right: left); |
2057 | PUSHs(lr>0? left: right); | |
3280af22 | 2058 | PUSHs( lr > 0 ? &PL_sv_yes : ( assign ? &PL_sv_undef : &PL_sv_no )); |
a0d0e21e | 2059 | if (notfound) { |
82af6593 NC |
2060 | PUSHs( sv_2mortal(newSVpvn(AMG_id2name(method + assignshift), |
2061 | AMG_id2namelen(method + assignshift)))); | |
a0d0e21e LW |
2062 | } |
2063 | PUSHs((SV*)cv); | |
2064 | PUTBACK; | |
2065 | ||
155aba94 | 2066 | if ((PL_op = Perl_pp_entersub(aTHX))) |
cea2e8a9 | 2067 | CALLRUNOPS(aTHX); |
a0d0e21e LW |
2068 | LEAVE; |
2069 | SPAGAIN; | |
2070 | ||
2071 | res=POPs; | |
ebafeae7 | 2072 | PUTBACK; |
d3acc0f7 | 2073 | POPSTACK; |
54310121 | 2074 | CATCH_SET(oldcatch); |
a0d0e21e | 2075 | |
a0d0e21e | 2076 | if (postpr) { |
b7787f18 | 2077 | int ans; |
a0d0e21e LW |
2078 | switch (method) { |
2079 | case le_amg: | |
2080 | case sle_amg: | |
2081 | ans=SvIV(res)<=0; break; | |
2082 | case lt_amg: | |
2083 | case slt_amg: | |
2084 | ans=SvIV(res)<0; break; | |
2085 | case ge_amg: | |
2086 | case sge_amg: | |
2087 | ans=SvIV(res)>=0; break; | |
2088 | case gt_amg: | |
2089 | case sgt_amg: | |
2090 | ans=SvIV(res)>0; break; | |
2091 | case eq_amg: | |
2092 | case seq_amg: | |
2093 | ans=SvIV(res)==0; break; | |
2094 | case ne_amg: | |
2095 | case sne_amg: | |
2096 | ans=SvIV(res)!=0; break; | |
2097 | case inc_amg: | |
2098 | case dec_amg: | |
bbce6d69 | 2099 | SvSetSV(left,res); return left; |
dc437b57 | 2100 | case not_amg: |
fe7ac86a | 2101 | ans=!SvTRUE(res); break; |
b7787f18 AL |
2102 | default: |
2103 | ans=0; break; | |
a0d0e21e | 2104 | } |
54310121 | 2105 | return boolSV(ans); |
748a9306 LW |
2106 | } else if (method==copy_amg) { |
2107 | if (!SvROK(res)) { | |
cea2e8a9 | 2108 | Perl_croak(aTHX_ "Copy method did not return a reference"); |
748a9306 LW |
2109 | } |
2110 | return SvREFCNT_inc(SvRV(res)); | |
a0d0e21e LW |
2111 | } else { |
2112 | return res; | |
2113 | } | |
2114 | } | |
2115 | } | |
c9d5ac95 GS |
2116 | |
2117 | /* | |
7fc63493 | 2118 | =for apidoc is_gv_magical_sv |
c9d5ac95 | 2119 | |
7a5fd60d NC |
2120 | Returns C<TRUE> if given the name of a magical GV. Calls is_gv_magical. |
2121 | ||
2122 | =cut | |
2123 | */ | |
2124 | ||
2125 | bool | |
2126 | Perl_is_gv_magical_sv(pTHX_ SV *name, U32 flags) | |
2127 | { | |
2128 | STRLEN len; | |
b64e5050 | 2129 | const char * const temp = SvPV_const(name, len); |
7a5fd60d NC |
2130 | return is_gv_magical(temp, len, flags); |
2131 | } | |
2132 | ||
2133 | /* | |
2134 | =for apidoc is_gv_magical | |
2135 | ||
c9d5ac95 GS |
2136 | Returns C<TRUE> if given the name of a magical GV. |
2137 | ||
2138 | Currently only useful internally when determining if a GV should be | |
2139 | created even in rvalue contexts. | |
2140 | ||
2141 | C<flags> is not used at present but available for future extension to | |
2142 | allow selecting particular classes of magical variable. | |
2143 | ||
b9b0e72c NC |
2144 | Currently assumes that C<name> is NUL terminated (as well as len being valid). |
2145 | This assumption is met by all callers within the perl core, which all pass | |
2146 | pointers returned by SvPV. | |
2147 | ||
c9d5ac95 GS |
2148 | =cut |
2149 | */ | |
2150 | bool | |
7fc63493 | 2151 | Perl_is_gv_magical(pTHX_ const char *name, STRLEN len, U32 flags) |
c9d5ac95 | 2152 | { |
b37c2d43 | 2153 | PERL_UNUSED_CONTEXT; |
9d4ba2ae AL |
2154 | PERL_UNUSED_ARG(flags); |
2155 | ||
b9b0e72c | 2156 | if (len > 1) { |
b464bac0 | 2157 | const char * const name1 = name + 1; |
b9b0e72c NC |
2158 | switch (*name) { |
2159 | case 'I': | |
9431620d | 2160 | if (len == 3 && name1[1] == 'S' && name[2] == 'A') |
b9b0e72c NC |
2161 | goto yes; |
2162 | break; | |
2163 | case 'O': | |
9431620d | 2164 | if (len == 8 && strEQ(name1, "VERLOAD")) |
b9b0e72c NC |
2165 | goto yes; |
2166 | break; | |
2167 | case 'S': | |
9431620d | 2168 | if (len == 3 && name[1] == 'I' && name[2] == 'G') |
b9b0e72c NC |
2169 | goto yes; |
2170 | break; | |
2171 | /* Using ${^...} variables is likely to be sufficiently rare that | |
2172 | it seems sensible to avoid the space hit of also checking the | |
2173 | length. */ | |
2174 | case '\017': /* ${^OPEN} */ | |
9431620d | 2175 | if (strEQ(name1, "PEN")) |
b9b0e72c NC |
2176 | goto yes; |
2177 | break; | |
2178 | case '\024': /* ${^TAINT} */ | |
9431620d | 2179 | if (strEQ(name1, "AINT")) |
b9b0e72c NC |
2180 | goto yes; |
2181 | break; | |
2182 | case '\025': /* ${^UNICODE} */ | |
9431620d | 2183 | if (strEQ(name1, "NICODE")) |
b9b0e72c | 2184 | goto yes; |
a0288114 | 2185 | if (strEQ(name1, "TF8LOCALE")) |
7cebcbc0 | 2186 | goto yes; |
b9b0e72c NC |
2187 | break; |
2188 | case '\027': /* ${^WARNING_BITS} */ | |
9431620d | 2189 | if (strEQ(name1, "ARNING_BITS")) |
b9b0e72c NC |
2190 | goto yes; |
2191 | break; | |
2192 | case '1': | |
2193 | case '2': | |
2194 | case '3': | |
2195 | case '4': | |
2196 | case '5': | |
2197 | case '6': | |
2198 | case '7': | |
2199 | case '8': | |
2200 | case '9': | |
c9d5ac95 | 2201 | { |
7fc63493 | 2202 | const char *end = name + len; |
c9d5ac95 GS |
2203 | while (--end > name) { |
2204 | if (!isDIGIT(*end)) | |
2205 | return FALSE; | |
2206 | } | |
b9b0e72c NC |
2207 | goto yes; |
2208 | } | |
2209 | } | |
2210 | } else { | |
2211 | /* Because we're already assuming that name is NUL terminated | |
2212 | below, we can treat an empty name as "\0" */ | |
2213 | switch (*name) { | |
2214 | case '&': | |
2215 | case '`': | |
2216 | case '\'': | |
2217 | case ':': | |
2218 | case '?': | |
2219 | case '!': | |
2220 | case '-': | |
2221 | case '#': | |
2222 | case '[': | |
2223 | case '^': | |
2224 | case '~': | |
2225 | case '=': | |
2226 | case '%': | |
2227 | case '.': | |
2228 | case '(': | |
2229 | case ')': | |
2230 | case '<': | |
2231 | case '>': | |
2232 | case ',': | |
2233 | case '\\': | |
2234 | case '/': | |
2235 | case '|': | |
2236 | case '+': | |
2237 | case ';': | |
2238 | case ']': | |
2239 | case '\001': /* $^A */ | |
2240 | case '\003': /* $^C */ | |
2241 | case '\004': /* $^D */ | |
2242 | case '\005': /* $^E */ | |
2243 | case '\006': /* $^F */ | |
2244 | case '\010': /* $^H */ | |
2245 | case '\011': /* $^I, NOT \t in EBCDIC */ | |
2246 | case '\014': /* $^L */ | |
2247 | case '\016': /* $^N */ | |
2248 | case '\017': /* $^O */ | |
2249 | case '\020': /* $^P */ | |
2250 | case '\023': /* $^S */ | |
2251 | case '\024': /* $^T */ | |
2252 | case '\026': /* $^V */ | |
2253 | case '\027': /* $^W */ | |
2254 | case '1': | |
2255 | case '2': | |
2256 | case '3': | |
2257 | case '4': | |
2258 | case '5': | |
2259 | case '6': | |
2260 | case '7': | |
2261 | case '8': | |
2262 | case '9': | |
2263 | yes: | |
2264 | return TRUE; | |
2265 | default: | |
2266 | break; | |
c9d5ac95 | 2267 | } |
c9d5ac95 GS |
2268 | } |
2269 | return FALSE; | |
2270 | } | |
66610fdd | 2271 | |
f5c1e807 NC |
2272 | void |
2273 | Perl_gv_name_set(pTHX_ GV *gv, const char *name, U32 len, U32 flags) | |
2274 | { | |
2275 | dVAR; | |
acda4c6a | 2276 | U32 hash; |
f5c1e807 | 2277 | |
9f616d01 | 2278 | assert(name); |
f5c1e807 NC |
2279 | PERL_UNUSED_ARG(flags); |
2280 | ||
acda4c6a NC |
2281 | if (len > I32_MAX) |
2282 | Perl_croak(aTHX_ "panic: gv name too long (%"UVuf")", (UV) len); | |
2283 | ||
ae8cc45f NC |
2284 | if (!(flags & GV_ADD) && GvNAME_HEK(gv)) { |
2285 | unshare_hek(GvNAME_HEK(gv)); | |
2286 | } | |
2287 | ||
acda4c6a | 2288 | PERL_HASH(hash, name, len); |
9f616d01 | 2289 | GvNAME_HEK(gv) = share_hek(name, len, hash); |
f5c1e807 NC |
2290 | } |
2291 | ||
66610fdd RGS |
2292 | /* |
2293 | * Local variables: | |
2294 | * c-indentation-style: bsd | |
2295 | * c-basic-offset: 4 | |
2296 | * indent-tabs-mode: t | |
2297 | * End: | |
2298 | * | |
37442d52 RGS |
2299 | * ex: set ts=8 sts=4 sw=4 noet: |
2300 | */ |