Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* gv.c |
79072805 | 2 | * |
3818b22b | 3 | * Copyright (c) 1991-2000, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * 'Mercy!' cried Gandalf. 'If the giving of information is to be the cure | |
12 | * of your inquisitiveness, I shall spend all the rest of my days answering | |
13 | * you. What more do you want to know?' | |
14 | * 'The names of all the stars, and of all living things, and the whole | |
15 | * history of Middle-earth and Over-heaven and of the Sundering Seas,' | |
16 | * laughed Pippin. | |
79072805 LW |
17 | */ |
18 | ||
19 | #include "EXTERN.h" | |
864dbfa3 | 20 | #define PERL_IN_GV_C |
79072805 LW |
21 | #include "perl.h" |
22 | ||
23 | GV * | |
864dbfa3 | 24 | Perl_gv_AVadd(pTHX_ register GV *gv) |
79072805 | 25 | { |
a0d0e21e | 26 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
cea2e8a9 | 27 | Perl_croak(aTHX_ "Bad symbol for array"); |
79072805 LW |
28 | if (!GvAV(gv)) |
29 | GvAV(gv) = newAV(); | |
30 | return gv; | |
31 | } | |
32 | ||
33 | GV * | |
864dbfa3 | 34 | Perl_gv_HVadd(pTHX_ register GV *gv) |
79072805 | 35 | { |
a0d0e21e | 36 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
cea2e8a9 | 37 | Perl_croak(aTHX_ "Bad symbol for hash"); |
79072805 | 38 | if (!GvHV(gv)) |
463ee0b2 | 39 | GvHV(gv) = newHV(); |
79072805 LW |
40 | return gv; |
41 | } | |
42 | ||
43 | GV * | |
864dbfa3 | 44 | Perl_gv_IOadd(pTHX_ register GV *gv) |
a0d0e21e LW |
45 | { |
46 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) | |
cea2e8a9 | 47 | Perl_croak(aTHX_ "Bad symbol for filehandle"); |
a0d0e21e LW |
48 | if (!GvIOp(gv)) |
49 | GvIOp(gv) = newIO(); | |
50 | return gv; | |
51 | } | |
52 | ||
53 | GV * | |
864dbfa3 | 54 | Perl_gv_fetchfile(pTHX_ const char *name) |
79072805 | 55 | { |
e858de61 | 56 | dTHR; |
53d95988 CS |
57 | char smallbuf[256]; |
58 | char *tmpbuf; | |
8ebc5c01 | 59 | STRLEN tmplen; |
79072805 LW |
60 | GV *gv; |
61 | ||
1d7c1841 GS |
62 | if (!PL_defstash) |
63 | return Nullgv; | |
64 | ||
53d95988 CS |
65 | tmplen = strlen(name) + 2; |
66 | if (tmplen < sizeof smallbuf) | |
67 | tmpbuf = smallbuf; | |
68 | else | |
69 | New(603, tmpbuf, tmplen + 1, char); | |
70 | tmpbuf[0] = '_'; | |
71 | tmpbuf[1] = '<'; | |
72 | strcpy(tmpbuf + 2, name); | |
3280af22 | 73 | gv = *(GV**)hv_fetch(PL_defstash, tmpbuf, tmplen, TRUE); |
1d7c1841 | 74 | if (!isGV(gv)) { |
3280af22 | 75 | gv_init(gv, PL_defstash, tmpbuf, tmplen, FALSE); |
1d7c1841 GS |
76 | sv_setpv(GvSV(gv), name); |
77 | if (PERLDB_LINE) | |
78 | hv_magic(GvHVn(gv_AVadd(gv)), gv, 'L'); | |
79 | } | |
53d95988 CS |
80 | if (tmpbuf != smallbuf) |
81 | Safefree(tmpbuf); | |
79072805 LW |
82 | return gv; |
83 | } | |
84 | ||
463ee0b2 | 85 | void |
864dbfa3 | 86 | Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi) |
463ee0b2 | 87 | { |
0f15f207 | 88 | dTHR; |
463ee0b2 | 89 | register GP *gp; |
55d729e4 GS |
90 | bool doproto = SvTYPE(gv) > SVt_NULL; |
91 | char *proto = (doproto && SvPOK(gv)) ? SvPVX(gv) : NULL; | |
463ee0b2 | 92 | |
dc437b57 | 93 | sv_upgrade((SV*)gv, SVt_PVGV); |
55d729e4 GS |
94 | if (SvLEN(gv)) { |
95 | if (proto) { | |
96 | SvPVX(gv) = NULL; | |
97 | SvLEN(gv) = 0; | |
98 | SvPOK_off(gv); | |
99 | } else | |
100 | Safefree(SvPVX(gv)); | |
101 | } | |
44a8e56a | 102 | Newz(602, gp, 1, GP); |
8990e307 | 103 | GvGP(gv) = gp_ref(gp); |
463ee0b2 | 104 | GvSV(gv) = NEWSV(72,0); |
1d7c1841 GS |
105 | GvLINE(gv) = CopLINE(PL_curcop); |
106 | GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : ""; | |
005a453c | 107 | GvCVGEN(gv) = 0; |
463ee0b2 LW |
108 | GvEGV(gv) = gv; |
109 | sv_magic((SV*)gv, (SV*)gv, '*', name, len); | |
85aff577 | 110 | GvSTASH(gv) = (HV*)SvREFCNT_inc(stash); |
a0d0e21e | 111 | GvNAME(gv) = savepvn(name, len); |
463ee0b2 | 112 | GvNAMELEN(gv) = len; |
23ad5bf5 | 113 | if (multi || doproto) /* doproto means it _was_ mentioned */ |
a5f75d66 | 114 | GvMULTI_on(gv); |
55d729e4 | 115 | if (doproto) { /* Replicate part of newSUB here. */ |
57ff9a15 | 116 | SvIOK_off(gv); |
55d729e4 | 117 | ENTER; |
b099ddc0 | 118 | /* XXX unsafe for threads if eval_owner isn't held */ |
55d729e4 | 119 | start_subparse(0,0); /* Create CV in compcv. */ |
3280af22 | 120 | GvCV(gv) = PL_compcv; |
55d729e4 GS |
121 | LEAVE; |
122 | ||
3280af22 | 123 | PL_sub_generation++; |
55d729e4 | 124 | CvGV(GvCV(gv)) = (GV*)SvREFCNT_inc(gv); |
1d7c1841 | 125 | CvFILE(GvCV(gv)) = CopFILE(PL_curcop); |
3280af22 | 126 | CvSTASH(GvCV(gv)) = PL_curstash; |
55d729e4 GS |
127 | #ifdef USE_THREADS |
128 | CvOWNER(GvCV(gv)) = 0; | |
1cfa4ec7 | 129 | if (!CvMUTEXP(GvCV(gv))) { |
b0a484d2 | 130 | New(666, CvMUTEXP(GvCV(gv)), 1, perl_mutex); |
1cfa4ec7 GS |
131 | MUTEX_INIT(CvMUTEXP(GvCV(gv))); |
132 | } | |
55d729e4 GS |
133 | #endif /* USE_THREADS */ |
134 | if (proto) { | |
135 | sv_setpv((SV*)GvCV(gv), proto); | |
136 | Safefree(proto); | |
137 | } | |
138 | } | |
463ee0b2 LW |
139 | } |
140 | ||
76e3520e | 141 | STATIC void |
cea2e8a9 | 142 | S_gv_init_sv(pTHX_ GV *gv, I32 sv_type) |
a0d0e21e LW |
143 | { |
144 | switch (sv_type) { | |
145 | case SVt_PVIO: | |
146 | (void)GvIOn(gv); | |
147 | break; | |
148 | case SVt_PVAV: | |
149 | (void)GvAVn(gv); | |
150 | break; | |
151 | case SVt_PVHV: | |
152 | (void)GvHVn(gv); | |
153 | break; | |
154 | } | |
155 | } | |
156 | ||
954c1994 GS |
157 | /* |
158 | =for apidoc gv_fetchmeth | |
159 | ||
160 | Returns the glob with the given C<name> and a defined subroutine or | |
161 | C<NULL>. The glob lives in the given C<stash>, or in the stashes | |
162 | accessible via @ISA and @UNIVERSAL. | |
163 | ||
164 | The argument C<level> should be either 0 or -1. If C<level==0>, as a | |
165 | side-effect creates a glob with the given C<name> in the given C<stash> | |
166 | which in the case of success contains an alias for the subroutine, and sets | |
167 | up caching info for this glob. Similarly for all the searched stashes. | |
168 | ||
169 | This function grants C<"SUPER"> token as a postfix of the stash name. The | |
170 | GV returned from C<gv_fetchmeth> may be a method cache entry, which is not | |
4929bf7b | 171 | visible to Perl code. So when calling C<call_sv>, you should not use |
954c1994 GS |
172 | the GV directly; instead, you should use the method's CV, which can be |
173 | obtained from the GV with the C<GvCV> macro. | |
174 | ||
175 | =cut | |
176 | */ | |
177 | ||
79072805 | 178 | GV * |
864dbfa3 | 179 | Perl_gv_fetchmeth(pTHX_ HV *stash, const char *name, STRLEN len, I32 level) |
79072805 LW |
180 | { |
181 | AV* av; | |
463ee0b2 | 182 | GV* topgv; |
79072805 | 183 | GV* gv; |
463ee0b2 | 184 | GV** gvp; |
748a9306 | 185 | CV* cv; |
a0d0e21e LW |
186 | |
187 | if (!stash) | |
188 | return 0; | |
44a8e56a | 189 | if ((level > 100) || (level < -100)) |
cea2e8a9 | 190 | Perl_croak(aTHX_ "Recursive inheritance detected while looking for method '%s' in package '%s'", |
3e0ccd42 | 191 | name, HvNAME(stash)); |
463ee0b2 | 192 | |
cea2e8a9 | 193 | DEBUG_o( Perl_deb(aTHX_ "Looking for method %s in package %s\n",name,HvNAME(stash)) ); |
44a8e56a | 194 | |
195 | gvp = (GV**)hv_fetch(stash, name, len, (level >= 0)); | |
196 | if (!gvp) | |
197 | topgv = Nullgv; | |
198 | else { | |
199 | topgv = *gvp; | |
200 | if (SvTYPE(topgv) != SVt_PVGV) | |
201 | gv_init(topgv, stash, name, len, TRUE); | |
155aba94 | 202 | if ((cv = GvCV(topgv))) { |
44a8e56a | 203 | /* If genuine method or valid cache entry, use it */ |
3280af22 | 204 | if (!GvCVGEN(topgv) || GvCVGEN(topgv) == PL_sub_generation) |
7a4c00b4 | 205 | return topgv; |
44a8e56a | 206 | /* Stale cached entry: junk it */ |
207 | SvREFCNT_dec(cv); | |
208 | GvCV(topgv) = cv = Nullcv; | |
209 | GvCVGEN(topgv) = 0; | |
748a9306 | 210 | } |
3280af22 | 211 | else if (GvCVGEN(topgv) == PL_sub_generation) |
005a453c | 212 | return 0; /* cache indicates sub doesn't exist */ |
463ee0b2 | 213 | } |
79072805 | 214 | |
9607fc9c | 215 | gvp = (GV**)hv_fetch(stash, "ISA", 3, FALSE); |
3280af22 | 216 | av = (gvp && (gv = *gvp) && gv != (GV*)&PL_sv_undef) ? GvAV(gv) : Nullav; |
9607fc9c | 217 | |
fb73857a | 218 | /* create and re-create @.*::SUPER::ISA on demand */ |
219 | if (!av || !SvMAGIC(av)) { | |
9607fc9c | 220 | char* packname = HvNAME(stash); |
221 | STRLEN packlen = strlen(packname); | |
222 | ||
223 | if (packlen >= 7 && strEQ(packname + packlen - 7, "::SUPER")) { | |
224 | HV* basestash; | |
225 | ||
226 | packlen -= 7; | |
227 | basestash = gv_stashpvn(packname, packlen, TRUE); | |
228 | gvp = (GV**)hv_fetch(basestash, "ISA", 3, FALSE); | |
3280af22 | 229 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
e858de61 | 230 | dTHR; /* just for SvREFCNT_dec */ |
9607fc9c | 231 | gvp = (GV**)hv_fetch(stash, "ISA", 3, TRUE); |
232 | if (!gvp || !(gv = *gvp)) | |
cea2e8a9 | 233 | Perl_croak(aTHX_ "Cannot create %s::ISA", HvNAME(stash)); |
9607fc9c | 234 | if (SvTYPE(gv) != SVt_PVGV) |
235 | gv_init(gv, stash, "ISA", 3, TRUE); | |
236 | SvREFCNT_dec(GvAV(gv)); | |
237 | GvAV(gv) = (AV*)SvREFCNT_inc(av); | |
238 | } | |
239 | } | |
240 | } | |
241 | ||
242 | if (av) { | |
79072805 | 243 | SV** svp = AvARRAY(av); |
93965878 NIS |
244 | /* NOTE: No support for tied ISA */ |
245 | I32 items = AvFILLp(av) + 1; | |
79072805 | 246 | while (items--) { |
79072805 | 247 | SV* sv = *svp++; |
a0d0e21e | 248 | HV* basestash = gv_stashsv(sv, FALSE); |
9bbf4081 | 249 | if (!basestash) { |
d008e5eb | 250 | dTHR; /* just for ckWARN */ |
599cee73 | 251 | if (ckWARN(WARN_MISC)) |
cea2e8a9 | 252 | Perl_warner(aTHX_ WARN_MISC, "Can't locate package %s for @%s::ISA", |
463ee0b2 | 253 | SvPVX(sv), HvNAME(stash)); |
79072805 LW |
254 | continue; |
255 | } | |
44a8e56a | 256 | gv = gv_fetchmeth(basestash, name, len, |
257 | (level >= 0) ? level + 1 : level - 1); | |
258 | if (gv) | |
259 | goto gotcha; | |
79072805 LW |
260 | } |
261 | } | |
a0d0e21e | 262 | |
9607fc9c | 263 | /* if at top level, try UNIVERSAL */ |
264 | ||
44a8e56a | 265 | if (level == 0 || level == -1) { |
9607fc9c | 266 | HV* lastchance; |
267 | ||
155aba94 GS |
268 | if ((lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE))) { |
269 | if ((gv = gv_fetchmeth(lastchance, name, len, | |
270 | (level >= 0) ? level + 1 : level - 1))) | |
271 | { | |
44a8e56a | 272 | gotcha: |
dc848c6f | 273 | /* |
274 | * Cache method in topgv if: | |
275 | * 1. topgv has no synonyms (else inheritance crosses wires) | |
276 | * 2. method isn't a stub (else AUTOLOAD fails spectacularly) | |
277 | */ | |
278 | if (topgv && | |
279 | GvREFCNT(topgv) == 1 && | |
280 | (cv = GvCV(gv)) && | |
281 | (CvROOT(cv) || CvXSUB(cv))) | |
282 | { | |
155aba94 | 283 | if ((cv = GvCV(topgv))) |
44a8e56a | 284 | SvREFCNT_dec(cv); |
285 | GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv)); | |
3280af22 | 286 | GvCVGEN(topgv) = PL_sub_generation; |
44a8e56a | 287 | } |
a0d0e21e LW |
288 | return gv; |
289 | } | |
005a453c JP |
290 | else if (topgv && GvREFCNT(topgv) == 1) { |
291 | /* cache the fact that the method is not defined */ | |
3280af22 | 292 | GvCVGEN(topgv) = PL_sub_generation; |
005a453c | 293 | } |
a0d0e21e LW |
294 | } |
295 | } | |
296 | ||
79072805 LW |
297 | return 0; |
298 | } | |
299 | ||
954c1994 GS |
300 | /* |
301 | =for apidoc gv_fetchmethod | |
302 | ||
6d0f518e | 303 | See L<gv_fetchmethod_autoload>. |
954c1994 GS |
304 | |
305 | =cut | |
306 | */ | |
307 | ||
79072805 | 308 | GV * |
864dbfa3 | 309 | Perl_gv_fetchmethod(pTHX_ HV *stash, const char *name) |
463ee0b2 | 310 | { |
dc848c6f | 311 | return gv_fetchmethod_autoload(stash, name, TRUE); |
312 | } | |
313 | ||
954c1994 GS |
314 | /* |
315 | =for apidoc gv_fetchmethod_autoload | |
316 | ||
317 | Returns the glob which contains the subroutine to call to invoke the method | |
318 | on the C<stash>. In fact in the presence of autoloading this may be the | |
319 | glob for "AUTOLOAD". In this case the corresponding variable $AUTOLOAD is | |
320 | already setup. | |
321 | ||
322 | The third parameter of C<gv_fetchmethod_autoload> determines whether | |
323 | AUTOLOAD lookup is performed if the given method is not present: non-zero | |
324 | means yes, look for AUTOLOAD; zero means no, don't look for AUTOLOAD. | |
325 | Calling C<gv_fetchmethod> is equivalent to calling C<gv_fetchmethod_autoload> | |
326 | with a non-zero C<autoload> parameter. | |
327 | ||
328 | These functions grant C<"SUPER"> token as a prefix of the method name. Note | |
329 | that if you want to keep the returned glob for a long time, you need to | |
330 | check for it being "AUTOLOAD", since at the later time the call may load a | |
331 | different subroutine due to $AUTOLOAD changing its value. Use the glob | |
332 | created via a side effect to do this. | |
333 | ||
334 | These functions have the same side-effects and as C<gv_fetchmeth> with | |
335 | C<level==0>. C<name> should be writable if contains C<':'> or C<' | |
336 | ''>. The warning against passing the GV returned by C<gv_fetchmeth> to | |
4929bf7b | 337 | C<call_sv> apply equally to these functions. |
954c1994 GS |
338 | |
339 | =cut | |
340 | */ | |
341 | ||
dc848c6f | 342 | GV * |
864dbfa3 | 343 | Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload) |
dc848c6f | 344 | { |
0f15f207 | 345 | dTHR; |
08105a92 GS |
346 | register const char *nend; |
347 | const char *nsplit = 0; | |
a0d0e21e | 348 | GV* gv; |
463ee0b2 LW |
349 | |
350 | for (nend = name; *nend; nend++) { | |
9607fc9c | 351 | if (*nend == '\'') |
a0d0e21e | 352 | nsplit = nend; |
9607fc9c | 353 | else if (*nend == ':' && *(nend + 1) == ':') |
354 | nsplit = ++nend; | |
a0d0e21e LW |
355 | } |
356 | if (nsplit) { | |
08105a92 | 357 | const char *origname = name; |
a0d0e21e | 358 | name = nsplit + 1; |
a0d0e21e LW |
359 | if (*nsplit == ':') |
360 | --nsplit; | |
9607fc9c | 361 | if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) { |
362 | /* ->SUPER::method should really be looked up in original stash */ | |
cea2e8a9 | 363 | SV *tmpstr = sv_2mortal(Perl_newSVpvf(aTHX_ "%s::SUPER", |
1d7c1841 | 364 | CopSTASHPV(PL_curcop))); |
9607fc9c | 365 | stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE); |
cea2e8a9 | 366 | DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n", |
9607fc9c | 367 | origname, HvNAME(stash), name) ); |
4633a7c4 | 368 | } |
9607fc9c | 369 | else |
370 | stash = gv_stashpvn(origname, nsplit - origname, TRUE); | |
4633a7c4 LW |
371 | } |
372 | ||
9607fc9c | 373 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
a0d0e21e | 374 | if (!gv) { |
702887b4 | 375 | if (strEQ(name,"import")) |
3280af22 | 376 | gv = (GV*)&PL_sv_yes; |
dc848c6f | 377 | else if (autoload) |
54310121 | 378 | gv = gv_autoload4(stash, name, nend - name, TRUE); |
463ee0b2 | 379 | } |
dc848c6f | 380 | else if (autoload) { |
381 | CV* cv = GvCV(gv); | |
09280a33 CS |
382 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
383 | GV* stubgv; | |
384 | GV* autogv; | |
385 | ||
386 | if (CvANON(cv)) | |
387 | stubgv = gv; | |
388 | else { | |
389 | stubgv = CvGV(cv); | |
390 | if (GvCV(stubgv) != cv) /* orphaned import */ | |
391 | stubgv = gv; | |
392 | } | |
393 | autogv = gv_autoload4(GvSTASH(stubgv), | |
394 | GvNAME(stubgv), GvNAMELEN(stubgv), TRUE); | |
dc848c6f | 395 | if (autogv) |
396 | gv = autogv; | |
397 | } | |
398 | } | |
44a8e56a | 399 | |
400 | return gv; | |
401 | } | |
402 | ||
403 | GV* | |
864dbfa3 | 404 | Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method) |
44a8e56a | 405 | { |
d008e5eb | 406 | dTHR; |
44a8e56a | 407 | static char autoload[] = "AUTOLOAD"; |
408 | static STRLEN autolen = 8; | |
409 | GV* gv; | |
410 | CV* cv; | |
411 | HV* varstash; | |
412 | GV* vargv; | |
413 | SV* varsv; | |
414 | ||
415 | if (len == autolen && strnEQ(name, autoload, autolen)) | |
416 | return Nullgv; | |
dc848c6f | 417 | if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE))) |
418 | return Nullgv; | |
419 | cv = GvCV(gv); | |
420 | ||
421 | /* | |
422 | * Inheriting AUTOLOAD for non-methods works ... for now. | |
423 | */ | |
599cee73 PM |
424 | if (ckWARN(WARN_DEPRECATED) && !method && |
425 | (GvCVGEN(gv) || GvSTASH(gv) != stash)) | |
cea2e8a9 | 426 | Perl_warner(aTHX_ WARN_DEPRECATED, |
dc848c6f | 427 | "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated", |
428 | HvNAME(stash), (int)len, name); | |
44a8e56a | 429 | |
430 | /* | |
431 | * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name. | |
432 | * The subroutine's original name may not be "AUTOLOAD", so we don't | |
433 | * use that, but for lack of anything better we will use the sub's | |
434 | * original package to look up $AUTOLOAD. | |
435 | */ | |
436 | varstash = GvSTASH(CvGV(cv)); | |
437 | vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE); | |
438 | if (!isGV(vargv)) | |
439 | gv_init(vargv, varstash, autoload, autolen, FALSE); | |
440 | varsv = GvSV(vargv); | |
441 | sv_setpv(varsv, HvNAME(stash)); | |
442 | sv_catpvn(varsv, "::", 2); | |
443 | sv_catpvn(varsv, name, len); | |
444 | SvTAINTED_off(varsv); | |
a0d0e21e LW |
445 | return gv; |
446 | } | |
447 | ||
954c1994 GS |
448 | /* |
449 | =for apidoc gv_stashpv | |
450 | ||
451 | Returns a pointer to the stash for a specified package. If C<create> is | |
452 | set then the package will be created if it does not already exist. If | |
453 | C<create> is not set and the package does not exist then NULL is | |
454 | returned. | |
455 | ||
456 | =cut | |
457 | */ | |
458 | ||
a0d0e21e | 459 | HV* |
864dbfa3 | 460 | Perl_gv_stashpv(pTHX_ const char *name, I32 create) |
a0d0e21e | 461 | { |
dc437b57 | 462 | return gv_stashpvn(name, strlen(name), create); |
463 | } | |
464 | ||
465 | HV* | |
864dbfa3 | 466 | Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 create) |
dc437b57 | 467 | { |
46fc3d4c | 468 | char smallbuf[256]; |
469 | char *tmpbuf; | |
a0d0e21e LW |
470 | HV *stash; |
471 | GV *tmpgv; | |
dc437b57 | 472 | |
46fc3d4c | 473 | if (namelen + 3 < sizeof smallbuf) |
474 | tmpbuf = smallbuf; | |
475 | else | |
476 | New(606, tmpbuf, namelen + 3, char); | |
dc437b57 | 477 | Copy(name,tmpbuf,namelen,char); |
478 | tmpbuf[namelen++] = ':'; | |
479 | tmpbuf[namelen++] = ':'; | |
480 | tmpbuf[namelen] = '\0'; | |
46fc3d4c | 481 | tmpgv = gv_fetchpv(tmpbuf, create, SVt_PVHV); |
482 | if (tmpbuf != smallbuf) | |
483 | Safefree(tmpbuf); | |
a0d0e21e LW |
484 | if (!tmpgv) |
485 | return 0; | |
486 | if (!GvHV(tmpgv)) | |
487 | GvHV(tmpgv) = newHV(); | |
488 | stash = GvHV(tmpgv); | |
489 | if (!HvNAME(stash)) | |
490 | HvNAME(stash) = savepv(name); | |
491 | return stash; | |
463ee0b2 LW |
492 | } |
493 | ||
954c1994 GS |
494 | /* |
495 | =for apidoc gv_stashsv | |
496 | ||
497 | Returns a pointer to the stash for a specified package. See | |
498 | C<gv_stashpv>. | |
499 | ||
500 | =cut | |
501 | */ | |
502 | ||
a0d0e21e | 503 | HV* |
864dbfa3 | 504 | Perl_gv_stashsv(pTHX_ SV *sv, I32 create) |
a0d0e21e | 505 | { |
dc437b57 | 506 | register char *ptr; |
507 | STRLEN len; | |
508 | ptr = SvPV(sv,len); | |
509 | return gv_stashpvn(ptr, len, create); | |
a0d0e21e LW |
510 | } |
511 | ||
512 | ||
463ee0b2 | 513 | GV * |
864dbfa3 | 514 | Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) |
79072805 | 515 | { |
11343788 | 516 | dTHR; |
08105a92 | 517 | register const char *name = nambeg; |
463ee0b2 | 518 | register GV *gv = 0; |
79072805 | 519 | GV**gvp; |
79072805 | 520 | I32 len; |
08105a92 | 521 | register const char *namend; |
463ee0b2 | 522 | HV *stash = 0; |
9607fc9c | 523 | U32 add_gvflags = 0; |
79072805 | 524 | |
c07a80fd | 525 | if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */ |
526 | name++; | |
527 | ||
79072805 | 528 | for (namend = name; *namend; namend++) { |
1d7c1841 GS |
529 | if ((*namend == ':' && namend[1] == ':') |
530 | || (*namend == '\'' && namend[1])) | |
463ee0b2 | 531 | { |
463ee0b2 | 532 | if (!stash) |
3280af22 | 533 | stash = PL_defstash; |
dc437b57 | 534 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0d0e21e | 535 | return Nullgv; |
463ee0b2 | 536 | |
85e6fe83 LW |
537 | len = namend - name; |
538 | if (len > 0) { | |
3c78fafa | 539 | char smallbuf[256]; |
62b57502 | 540 | char *tmpbuf; |
62b57502 | 541 | |
3c78fafa GS |
542 | if (len + 3 < sizeof smallbuf) |
543 | tmpbuf = smallbuf; | |
62b57502 MB |
544 | else |
545 | New(601, tmpbuf, len+3, char); | |
a0d0e21e LW |
546 | Copy(name, tmpbuf, len, char); |
547 | tmpbuf[len++] = ':'; | |
548 | tmpbuf[len++] = ':'; | |
549 | tmpbuf[len] = '\0'; | |
463ee0b2 | 550 | gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); |
6fa846a0 | 551 | gv = gvp ? *gvp : Nullgv; |
3280af22 | 552 | if (gv && gv != (GV*)&PL_sv_undef) { |
6fa846a0 | 553 | if (SvTYPE(gv) != SVt_PVGV) |
0f303493 | 554 | gv_init(gv, stash, tmpbuf, len, (add & GV_ADDMULTI)); |
6fa846a0 GS |
555 | else |
556 | GvMULTI_on(gv); | |
557 | } | |
3c78fafa | 558 | if (tmpbuf != smallbuf) |
62b57502 | 559 | Safefree(tmpbuf); |
3280af22 | 560 | if (!gv || gv == (GV*)&PL_sv_undef) |
a0d0e21e | 561 | return Nullgv; |
85e6fe83 | 562 | |
463ee0b2 LW |
563 | if (!(stash = GvHV(gv))) |
564 | stash = GvHV(gv) = newHV(); | |
85e6fe83 | 565 | |
463ee0b2 | 566 | if (!HvNAME(stash)) |
a0d0e21e | 567 | HvNAME(stash) = savepvn(nambeg, namend - nambeg); |
463ee0b2 LW |
568 | } |
569 | ||
570 | if (*namend == ':') | |
571 | namend++; | |
572 | namend++; | |
573 | name = namend; | |
574 | if (!*name) | |
3280af22 | 575 | return gv ? gv : (GV*)*hv_fetch(PL_defstash, "main::", 6, TRUE); |
79072805 | 576 | } |
79072805 | 577 | } |
a0d0e21e LW |
578 | len = namend - name; |
579 | if (!len) | |
580 | len = 1; | |
463ee0b2 LW |
581 | |
582 | /* No stash in name, so see how we can default */ | |
583 | ||
584 | if (!stash) { | |
7e2040f0 | 585 | if (isIDFIRST_lazy(name)) { |
9607fc9c | 586 | bool global = FALSE; |
587 | ||
463ee0b2 | 588 | if (isUPPER(*name)) { |
9d116dd7 JH |
589 | if (*name == 'S' && ( |
590 | strEQ(name, "SIG") || | |
591 | strEQ(name, "STDIN") || | |
592 | strEQ(name, "STDOUT") || | |
593 | strEQ(name, "STDERR"))) | |
594 | global = TRUE; | |
595 | else if (*name == 'I' && strEQ(name, "INC")) | |
596 | global = TRUE; | |
597 | else if (*name == 'E' && strEQ(name, "ENV")) | |
598 | global = TRUE; | |
463ee0b2 LW |
599 | else if (*name == 'A' && ( |
600 | strEQ(name, "ARGV") || | |
9d116dd7 | 601 | strEQ(name, "ARGVOUT"))) |
463ee0b2 LW |
602 | global = TRUE; |
603 | } | |
604 | else if (*name == '_' && !name[1]) | |
605 | global = TRUE; | |
9607fc9c | 606 | |
463ee0b2 | 607 | if (global) |
3280af22 NIS |
608 | stash = PL_defstash; |
609 | else if ((COP*)PL_curcop == &PL_compiling) { | |
610 | stash = PL_curstash; | |
611 | if (add && (PL_hints & HINT_STRICT_VARS) && | |
748a9306 LW |
612 | sv_type != SVt_PVCV && |
613 | sv_type != SVt_PVGV && | |
4633a7c4 | 614 | sv_type != SVt_PVFM && |
c07a80fd | 615 | sv_type != SVt_PVIO && |
377b8fbc | 616 | !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) ) |
748a9306 | 617 | { |
4633a7c4 LW |
618 | gvp = (GV**)hv_fetch(stash,name,len,0); |
619 | if (!gvp || | |
3280af22 | 620 | *gvp == (GV*)&PL_sv_undef || |
a5f75d66 AD |
621 | SvTYPE(*gvp) != SVt_PVGV) |
622 | { | |
4633a7c4 | 623 | stash = 0; |
a5f75d66 | 624 | } |
155aba94 GS |
625 | else if ((sv_type == SVt_PV && !GvIMPORTED_SV(*gvp)) || |
626 | (sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp)) || | |
627 | (sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp)) ) | |
4633a7c4 | 628 | { |
cea2e8a9 | 629 | Perl_warn(aTHX_ "Variable \"%c%s\" is not imported", |
4633a7c4 LW |
630 | sv_type == SVt_PVAV ? '@' : |
631 | sv_type == SVt_PVHV ? '%' : '$', | |
632 | name); | |
8ebc5c01 | 633 | if (GvCVu(*gvp)) |
cea2e8a9 | 634 | Perl_warn(aTHX_ "(Did you mean &%s instead?)\n", name); |
a0d0e21e | 635 | stash = 0; |
4633a7c4 | 636 | } |
a0d0e21e | 637 | } |
85e6fe83 | 638 | } |
463ee0b2 | 639 | else |
1d7c1841 | 640 | stash = CopSTASH(PL_curcop); |
463ee0b2 LW |
641 | } |
642 | else | |
3280af22 | 643 | stash = PL_defstash; |
463ee0b2 LW |
644 | } |
645 | ||
646 | /* By this point we should have a stash and a name */ | |
647 | ||
a0d0e21e | 648 | if (!stash) { |
5a844595 GS |
649 | if (add) { |
650 | qerror(Perl_mess(aTHX_ | |
651 | "Global symbol \"%s%s\" requires explicit package name", | |
652 | (sv_type == SVt_PV ? "$" | |
653 | : sv_type == SVt_PVAV ? "@" | |
654 | : sv_type == SVt_PVHV ? "%" | |
655 | : ""), name)); | |
a0d0e21e | 656 | } |
5a844595 | 657 | return Nullgv; |
a0d0e21e LW |
658 | } |
659 | ||
660 | if (!SvREFCNT(stash)) /* symbol table under destruction */ | |
661 | return Nullgv; | |
662 | ||
79072805 | 663 | gvp = (GV**)hv_fetch(stash,name,len,add); |
3280af22 | 664 | if (!gvp || *gvp == (GV*)&PL_sv_undef) |
79072805 LW |
665 | return Nullgv; |
666 | gv = *gvp; | |
667 | if (SvTYPE(gv) == SVt_PVGV) { | |
a0d0e21e | 668 | if (add) { |
a5f75d66 | 669 | GvMULTI_on(gv); |
a0d0e21e LW |
670 | gv_init_sv(gv, sv_type); |
671 | } | |
79072805 | 672 | return gv; |
55d729e4 GS |
673 | } else if (add & GV_NOINIT) { |
674 | return gv; | |
79072805 | 675 | } |
93a17b20 LW |
676 | |
677 | /* Adding a new symbol */ | |
678 | ||
0453d815 PM |
679 | if (add & GV_ADDWARN && ckWARN_d(WARN_INTERNAL)) |
680 | Perl_warner(aTHX_ WARN_INTERNAL, "Had to create %s unexpectedly", nambeg); | |
55d729e4 | 681 | gv_init(gv, stash, name, len, add & GV_ADDMULTI); |
a0d0e21e | 682 | gv_init_sv(gv, sv_type); |
9607fc9c | 683 | GvFLAGS(gv) |= add_gvflags; |
93a17b20 | 684 | |
0453d815 PM |
685 | if (isLEXWARN_on && isALPHA(name[0]) && ! ckWARN(WARN_ONCE)) |
686 | GvMULTI_on(gv) ; | |
687 | ||
93a17b20 LW |
688 | /* set up magic where warranted */ |
689 | switch (*name) { | |
a0d0e21e LW |
690 | case 'A': |
691 | if (strEQ(name, "ARGV")) { | |
692 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; | |
693 | } | |
694 | break; | |
a0d0e21e LW |
695 | case 'E': |
696 | if (strnEQ(name, "EXPORT", 6)) | |
a5f75d66 | 697 | GvMULTI_on(gv); |
a0d0e21e | 698 | break; |
463ee0b2 LW |
699 | case 'I': |
700 | if (strEQ(name, "ISA")) { | |
701 | AV* av = GvAVn(gv); | |
a5f75d66 | 702 | GvMULTI_on(gv); |
a0d0e21e | 703 | sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0); |
93965878 | 704 | /* NOTE: No support for tied ISA */ |
55d729e4 GS |
705 | if ((add & GV_ADDMULTI) && strEQ(nambeg,"AnyDBM_File::ISA") |
706 | && AvFILLp(av) == -1) | |
85e6fe83 | 707 | { |
a0d0e21e | 708 | char *pname; |
79cb57f6 | 709 | av_push(av, newSVpvn(pname = "NDBM_File",9)); |
dc437b57 | 710 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 711 | av_push(av, newSVpvn(pname = "DB_File",7)); |
dc437b57 | 712 | gv_stashpvn(pname, 7, TRUE); |
79cb57f6 | 713 | av_push(av, newSVpvn(pname = "GDBM_File",9)); |
dc437b57 | 714 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 715 | av_push(av, newSVpvn(pname = "SDBM_File",9)); |
dc437b57 | 716 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 717 | av_push(av, newSVpvn(pname = "ODBM_File",9)); |
dc437b57 | 718 | gv_stashpvn(pname, 9, TRUE); |
85e6fe83 | 719 | } |
463ee0b2 LW |
720 | } |
721 | break; | |
a0d0e21e LW |
722 | case 'O': |
723 | if (strEQ(name, "OVERLOAD")) { | |
724 | HV* hv = GvHVn(gv); | |
a5f75d66 | 725 | GvMULTI_on(gv); |
ea0efc06 | 726 | hv_magic(hv, gv, 'A'); |
a0d0e21e LW |
727 | } |
728 | break; | |
93a17b20 LW |
729 | case 'S': |
730 | if (strEQ(name, "SIG")) { | |
731 | HV *hv; | |
dc437b57 | 732 | I32 i; |
1d7c1841 GS |
733 | if (!PL_psig_ptr) { |
734 | int sig_num[] = { SIG_NUM }; | |
735 | New(73, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*); | |
736 | New(73, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*); | |
737 | } | |
738 | GvMULTI_on(gv); | |
739 | hv = GvHVn(gv); | |
740 | hv_magic(hv, gv, 'S'); | |
741 | for (i = 1; PL_sig_name[i]; i++) { | |
dc437b57 | 742 | SV ** init; |
1d7c1841 GS |
743 | init = hv_fetch(hv, PL_sig_name[i], strlen(PL_sig_name[i]), 1); |
744 | if (init) | |
745 | sv_setsv(*init, &PL_sv_undef); | |
22c35a8c GS |
746 | PL_psig_ptr[i] = 0; |
747 | PL_psig_name[i] = 0; | |
dc437b57 | 748 | } |
93a17b20 LW |
749 | } |
750 | break; | |
09bef843 SB |
751 | case 'V': |
752 | if (strEQ(name, "VERSION")) | |
753 | GvMULTI_on(gv); | |
754 | break; | |
93a17b20 LW |
755 | |
756 | case '&': | |
463ee0b2 LW |
757 | if (len > 1) |
758 | break; | |
3280af22 | 759 | PL_sawampersand = TRUE; |
a0d0e21e | 760 | goto ro_magicalize; |
93a17b20 LW |
761 | |
762 | case '`': | |
463ee0b2 LW |
763 | if (len > 1) |
764 | break; | |
3280af22 | 765 | PL_sawampersand = TRUE; |
a0d0e21e | 766 | goto ro_magicalize; |
93a17b20 LW |
767 | |
768 | case '\'': | |
463ee0b2 LW |
769 | if (len > 1) |
770 | break; | |
3280af22 | 771 | PL_sawampersand = TRUE; |
a0d0e21e | 772 | goto ro_magicalize; |
93a17b20 LW |
773 | |
774 | case ':': | |
463ee0b2 LW |
775 | if (len > 1) |
776 | break; | |
3280af22 | 777 | sv_setpv(GvSV(gv),PL_chopset); |
93a17b20 LW |
778 | goto magicalize; |
779 | ||
ff0cee69 | 780 | case '?': |
781 | if (len > 1) | |
782 | break; | |
783 | #ifdef COMPLEX_STATUS | |
07f14f54 | 784 | (void)SvUPGRADE(GvSV(gv), SVt_PVLV); |
ff0cee69 | 785 | #endif |
786 | goto magicalize; | |
787 | ||
067391ea | 788 | case '!': |
4318d5a0 | 789 | if (len > 1) |
067391ea | 790 | break; |
3280af22 | 791 | if (sv_type > SVt_PV && PL_curcop != &PL_compiling) { |
067391ea | 792 | HV* stash = gv_stashpvn("Errno",5,FALSE); |
265f5c4a | 793 | if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) { |
067391ea GS |
794 | dSP; |
795 | PUTBACK; | |
cea2e8a9 | 796 | require_pv("Errno.pm"); |
067391ea GS |
797 | SPAGAIN; |
798 | stash = gv_stashpvn("Errno",5,FALSE); | |
799 | if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) | |
cea2e8a9 | 800 | Perl_croak(aTHX_ "Can't use %%! because Errno.pm is not available"); |
067391ea GS |
801 | } |
802 | } | |
803 | goto magicalize; | |
6cef1e77 IZ |
804 | case '-': |
805 | if (len > 1) | |
806 | break; | |
807 | else { | |
808 | AV* av = GvAVn(gv); | |
809 | sv_magic((SV*)av, Nullsv, 'D', Nullch, 0); | |
810 | } | |
811 | goto magicalize; | |
93a17b20 | 812 | case '#': |
a0d0e21e | 813 | case '*': |
599cee73 | 814 | if (ckWARN(WARN_DEPRECATED) && len == 1 && sv_type == SVt_PV) |
cea2e8a9 | 815 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of $%s is deprecated", name); |
a0d0e21e LW |
816 | /* FALL THROUGH */ |
817 | case '[': | |
93a17b20 LW |
818 | case '^': |
819 | case '~': | |
820 | case '=': | |
93a17b20 LW |
821 | case '%': |
822 | case '.': | |
93a17b20 LW |
823 | case '(': |
824 | case ')': | |
825 | case '<': | |
826 | case '>': | |
827 | case ',': | |
828 | case '\\': | |
829 | case '/': | |
93a17b20 | 830 | case '|': |
16070b82 GS |
831 | case '\001': /* $^A */ |
832 | case '\003': /* $^C */ | |
833 | case '\004': /* $^D */ | |
834 | case '\005': /* $^E */ | |
835 | case '\006': /* $^F */ | |
836 | case '\010': /* $^H */ | |
837 | case '\011': /* $^I, NOT \t in EBCDIC */ | |
838 | case '\017': /* $^O */ | |
839 | case '\020': /* $^P */ | |
840 | case '\024': /* $^T */ | |
463ee0b2 LW |
841 | if (len > 1) |
842 | break; | |
843 | goto magicalize; | |
16070b82 | 844 | case '\023': /* $^S */ |
6cef1e77 IZ |
845 | if (len > 1) |
846 | break; | |
847 | goto ro_magicalize; | |
6a818117 | 848 | case '\027': /* $^W & $^WARNING_BITS */ |
a50e31ad GS |
849 | if (len > 1 && strNE(name, "\027ARNING_BITS") |
850 | && strNE(name, "\027IDE_SYSTEM_CALLS")) | |
4438c4b7 JH |
851 | break; |
852 | goto magicalize; | |
463ee0b2 | 853 | |
a0d0e21e | 854 | case '+': |
6cef1e77 IZ |
855 | if (len > 1) |
856 | break; | |
857 | else { | |
858 | AV* av = GvAVn(gv); | |
859 | sv_magic((SV*)av, (SV*)av, 'D', Nullch, 0); | |
860 | } | |
861 | /* FALL THROUGH */ | |
463ee0b2 LW |
862 | case '1': |
863 | case '2': | |
864 | case '3': | |
865 | case '4': | |
866 | case '5': | |
867 | case '6': | |
868 | case '7': | |
869 | case '8': | |
870 | case '9': | |
a0d0e21e LW |
871 | ro_magicalize: |
872 | SvREADONLY_on(GvSV(gv)); | |
93a17b20 | 873 | magicalize: |
463ee0b2 | 874 | sv_magic(GvSV(gv), (SV*)gv, 0, name, len); |
93a17b20 LW |
875 | break; |
876 | ||
16070b82 | 877 | case '\014': /* $^L */ |
463ee0b2 LW |
878 | if (len > 1) |
879 | break; | |
93a17b20 | 880 | sv_setpv(GvSV(gv),"\f"); |
3280af22 | 881 | PL_formfeed = GvSV(gv); |
93a17b20 LW |
882 | break; |
883 | case ';': | |
463ee0b2 LW |
884 | if (len > 1) |
885 | break; | |
93a17b20 LW |
886 | sv_setpv(GvSV(gv),"\034"); |
887 | break; | |
463ee0b2 LW |
888 | case ']': |
889 | if (len == 1) { | |
f86702cc | 890 | SV *sv = GvSV(gv); |
5089c844 GS |
891 | (void)SvUPGRADE(sv, SVt_PVNV); |
892 | SvNVX(sv) = SvNVX(PL_patchlevel); | |
893 | SvNOK_on(sv); | |
894 | (void)SvPV_nolen(sv); | |
895 | SvREADONLY_on(sv); | |
93a17b20 LW |
896 | } |
897 | break; | |
16070b82 GS |
898 | case '\026': /* $^V */ |
899 | if (len == 1) { | |
900 | SV *sv = GvSV(gv); | |
901 | GvSV(gv) = SvREFCNT_inc(PL_patchlevel); | |
902 | SvREFCNT_dec(sv); | |
903 | } | |
904 | break; | |
79072805 | 905 | } |
93a17b20 | 906 | return gv; |
79072805 LW |
907 | } |
908 | ||
909 | void | |
864dbfa3 | 910 | Perl_gv_fullname3(pTHX_ SV *sv, GV *gv, const char *prefix) |
79072805 LW |
911 | { |
912 | HV *hv = GvSTASH(gv); | |
f967eb5f | 913 | if (!hv) { |
155aba94 | 914 | (void)SvOK_off(sv); |
79072805 | 915 | return; |
f967eb5f | 916 | } |
917 | sv_setpv(sv, prefix ? prefix : ""); | |
79072805 | 918 | sv_catpv(sv,HvNAME(hv)); |
463ee0b2 | 919 | sv_catpvn(sv,"::", 2); |
79072805 LW |
920 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); |
921 | } | |
922 | ||
923 | void | |
864dbfa3 | 924 | Perl_gv_efullname3(pTHX_ SV *sv, GV *gv, const char *prefix) |
79072805 | 925 | { |
f967eb5f | 926 | GV *egv = GvEGV(gv); |
748a9306 LW |
927 | if (!egv) |
928 | egv = gv; | |
f6aff53a | 929 | gv_fullname3(sv, egv, prefix); |
930 | } | |
931 | ||
932 | /* XXX compatibility with versions <= 5.003. */ | |
933 | void | |
864dbfa3 | 934 | Perl_gv_fullname(pTHX_ SV *sv, GV *gv) |
f6aff53a | 935 | { |
936 | gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
937 | } | |
938 | ||
939 | /* XXX compatibility with versions <= 5.003. */ | |
940 | void | |
864dbfa3 | 941 | Perl_gv_efullname(pTHX_ SV *sv, GV *gv) |
f6aff53a | 942 | { |
943 | gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
79072805 LW |
944 | } |
945 | ||
946 | IO * | |
864dbfa3 | 947 | Perl_newIO(pTHX) |
79072805 | 948 | { |
11343788 | 949 | dTHR; |
79072805 | 950 | IO *io; |
8990e307 LW |
951 | GV *iogv; |
952 | ||
953 | io = (IO*)NEWSV(0,0); | |
a0d0e21e | 954 | sv_upgrade((SV *)io,SVt_PVIO); |
8990e307 LW |
955 | SvREFCNT(io) = 1; |
956 | SvOBJECT_on(io); | |
c9de509e | 957 | iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV); |
5f2d631d GS |
958 | /* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */ |
959 | if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv)))) | |
c9de509e | 960 | iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV); |
8990e307 | 961 | SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv)); |
79072805 LW |
962 | return io; |
963 | } | |
964 | ||
965 | void | |
864dbfa3 | 966 | Perl_gv_check(pTHX_ HV *stash) |
79072805 | 967 | { |
11343788 | 968 | dTHR; |
79072805 LW |
969 | register HE *entry; |
970 | register I32 i; | |
971 | register GV *gv; | |
463ee0b2 LW |
972 | HV *hv; |
973 | ||
8990e307 LW |
974 | if (!HvARRAY(stash)) |
975 | return; | |
a0d0e21e | 976 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
dc437b57 | 977 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
978 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && | |
979 | (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv)) | |
a0d0e21e | 980 | { |
19b6c847 | 981 | if (hv != PL_defstash && hv != stash) |
a0d0e21e LW |
982 | gv_check(hv); /* nested package */ |
983 | } | |
dc437b57 | 984 | else if (isALPHA(*HeKEY(entry))) { |
1d7c1841 | 985 | char *file; |
dc437b57 | 986 | gv = (GV*)HeVAL(entry); |
55d729e4 | 987 | if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv)) |
463ee0b2 | 988 | continue; |
1d7c1841 GS |
989 | file = GvFILE(gv); |
990 | /* performance hack: if filename is absolute and it's a standard | |
991 | * module, don't bother warning */ | |
992 | if (file | |
993 | && PERL_FILE_IS_ABSOLUTE(file) | |
994 | && (instr(file, "/lib/") || instr(file, ".pm"))) | |
995 | { | |
8990e307 | 996 | continue; |
1d7c1841 GS |
997 | } |
998 | CopLINE_set(PL_curcop, GvLINE(gv)); | |
999 | #ifdef USE_ITHREADS | |
1000 | CopFILE(PL_curcop) = file; /* set for warning */ | |
1001 | #else | |
1002 | CopFILEGV(PL_curcop) = gv_fetchfile(file); | |
1003 | #endif | |
cea2e8a9 | 1004 | Perl_warner(aTHX_ WARN_ONCE, |
599cee73 | 1005 | "Name \"%s::%s\" used only once: possible typo", |
a0d0e21e | 1006 | HvNAME(stash), GvNAME(gv)); |
463ee0b2 | 1007 | } |
79072805 LW |
1008 | } |
1009 | } | |
1010 | } | |
1011 | ||
1012 | GV * | |
864dbfa3 | 1013 | Perl_newGVgen(pTHX_ char *pack) |
79072805 | 1014 | { |
cea2e8a9 | 1015 | return gv_fetchpv(Perl_form(aTHX_ "%s::_GEN_%ld", pack, (long)PL_gensym++), |
46fc3d4c | 1016 | TRUE, SVt_PVGV); |
79072805 LW |
1017 | } |
1018 | ||
1019 | /* hopefully this is only called on local symbol table entries */ | |
1020 | ||
1021 | GP* | |
864dbfa3 | 1022 | Perl_gp_ref(pTHX_ GP *gp) |
79072805 | 1023 | { |
1d7c1841 GS |
1024 | if (!gp) |
1025 | return (GP*)NULL; | |
79072805 | 1026 | gp->gp_refcnt++; |
44a8e56a | 1027 | if (gp->gp_cv) { |
1028 | if (gp->gp_cvgen) { | |
1029 | /* multi-named GPs cannot be used for method cache */ | |
1030 | SvREFCNT_dec(gp->gp_cv); | |
1031 | gp->gp_cv = Nullcv; | |
1032 | gp->gp_cvgen = 0; | |
1033 | } | |
1034 | else { | |
1035 | /* Adding a new name to a subroutine invalidates method cache */ | |
3280af22 | 1036 | PL_sub_generation++; |
44a8e56a | 1037 | } |
1038 | } | |
79072805 | 1039 | return gp; |
79072805 LW |
1040 | } |
1041 | ||
1042 | void | |
864dbfa3 | 1043 | Perl_gp_free(pTHX_ GV *gv) |
79072805 | 1044 | { |
f248d071 | 1045 | dTHR; |
79072805 LW |
1046 | GP* gp; |
1047 | ||
1048 | if (!gv || !(gp = GvGP(gv))) | |
1049 | return; | |
f248d071 GS |
1050 | if (gp->gp_refcnt == 0) { |
1051 | if (ckWARN_d(WARN_INTERNAL)) | |
1052 | Perl_warner(aTHX_ WARN_INTERNAL, | |
1053 | "Attempt to free unreferenced glob pointers"); | |
79072805 LW |
1054 | return; |
1055 | } | |
44a8e56a | 1056 | if (gp->gp_cv) { |
1057 | /* Deleting the name of a subroutine invalidates method cache */ | |
3280af22 | 1058 | PL_sub_generation++; |
44a8e56a | 1059 | } |
748a9306 LW |
1060 | if (--gp->gp_refcnt > 0) { |
1061 | if (gp->gp_egv == gv) | |
1062 | gp->gp_egv = 0; | |
79072805 | 1063 | return; |
748a9306 | 1064 | } |
79072805 | 1065 | |
8990e307 LW |
1066 | SvREFCNT_dec(gp->gp_sv); |
1067 | SvREFCNT_dec(gp->gp_av); | |
1068 | SvREFCNT_dec(gp->gp_hv); | |
377b8fbc | 1069 | SvREFCNT_dec(gp->gp_io); |
a6006777 | 1070 | SvREFCNT_dec(gp->gp_cv); |
748a9306 LW |
1071 | SvREFCNT_dec(gp->gp_form); |
1072 | ||
79072805 LW |
1073 | Safefree(gp); |
1074 | GvGP(gv) = 0; | |
1075 | } | |
1076 | ||
1077 | #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286)) | |
1078 | #define MICROPORT | |
1079 | #endif | |
1080 | ||
1081 | #ifdef MICROPORT /* Microport 2.4 hack */ | |
1082 | AV *GvAVn(gv) | |
1083 | register GV *gv; | |
1084 | { | |
1085 | if (GvGP(gv)->gp_av) | |
1086 | return GvGP(gv)->gp_av; | |
1087 | else | |
1088 | return GvGP(gv_AVadd(gv))->gp_av; | |
1089 | } | |
1090 | ||
1091 | HV *GvHVn(gv) | |
1092 | register GV *gv; | |
1093 | { | |
1094 | if (GvGP(gv)->gp_hv) | |
1095 | return GvGP(gv)->gp_hv; | |
1096 | else | |
1097 | return GvGP(gv_HVadd(gv))->gp_hv; | |
1098 | } | |
1099 | #endif /* Microport 2.4 hack */ | |
a0d0e21e | 1100 | |
a0d0e21e LW |
1101 | /* Updates and caches the CV's */ |
1102 | ||
1103 | bool | |
864dbfa3 | 1104 | Perl_Gv_AMupdate(pTHX_ HV *stash) |
a0d0e21e | 1105 | { |
155aba94 | 1106 | dTHR; |
a0d0e21e LW |
1107 | GV* gv; |
1108 | CV* cv; | |
1109 | MAGIC* mg=mg_find((SV*)stash,'c'); | |
8ac85365 | 1110 | AMT *amtp = (mg) ? (AMT*)mg->mg_ptr: (AMT *) NULL; |
a6006777 | 1111 | AMT amt; |
2d8e6c8d | 1112 | STRLEN n_a; |
155aba94 GS |
1113 | #ifdef OVERLOAD_VIA_HASH |
1114 | GV** gvp; | |
1115 | HV* hv; | |
1116 | #endif | |
a0d0e21e | 1117 | |
3280af22 NIS |
1118 | if (mg && amtp->was_ok_am == PL_amagic_generation |
1119 | && amtp->was_ok_sub == PL_sub_generation) | |
a6006777 | 1120 | return AMT_AMAGIC(amtp); |
1121 | if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */ | |
748a9306 | 1122 | int i; |
a6006777 | 1123 | for (i=1; i<NofAMmeth; i++) { |
748a9306 LW |
1124 | if (amtp->table[i]) { |
1125 | SvREFCNT_dec(amtp->table[i]); | |
1126 | } | |
1127 | } | |
1128 | } | |
a0d0e21e LW |
1129 | sv_unmagic((SV*)stash, 'c'); |
1130 | ||
cea2e8a9 | 1131 | DEBUG_o( Perl_deb(aTHX_ "Recalcing overload magic in package %s\n",HvNAME(stash)) ); |
a0d0e21e | 1132 | |
3280af22 NIS |
1133 | amt.was_ok_am = PL_amagic_generation; |
1134 | amt.was_ok_sub = PL_sub_generation; | |
a6006777 | 1135 | amt.fallback = AMGfallNO; |
1136 | amt.flags = 0; | |
1137 | ||
1138 | #ifdef OVERLOAD_VIA_HASH | |
1139 | gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */ | |
3280af22 | 1140 | if (gvp && ((gv = *gvp) != (GV*)&PL_sv_undef && (hv = GvHV(gv)))) { |
a0d0e21e LW |
1141 | int filled=0; |
1142 | int i; | |
1143 | char *cp; | |
a0d0e21e LW |
1144 | SV* sv; |
1145 | SV** svp; | |
a0d0e21e | 1146 | |
22c35a8c | 1147 | /* Work with "fallback" key, which we assume to be first in PL_AMG_names */ |
a0d0e21e | 1148 | |
22c35a8c | 1149 | if (( cp = (char *)PL_AMG_names[0] ) && |
a6006777 | 1150 | (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) { |
a0d0e21e LW |
1151 | if (SvTRUE(sv)) amt.fallback=AMGfallYES; |
1152 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; | |
1153 | } | |
a6006777 | 1154 | for (i = 1; i < NofAMmeth; i++) { |
1155 | cv = 0; | |
22c35a8c | 1156 | cp = (char *)PL_AMG_names[i]; |
a6006777 | 1157 | |
1158 | svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE); | |
3280af22 | 1159 | if (svp && ((sv = *svp) != &PL_sv_undef)) { |
a0d0e21e LW |
1160 | switch (SvTYPE(sv)) { |
1161 | default: | |
1162 | if (!SvROK(sv)) { | |
1163 | if (!SvOK(sv)) break; | |
2d8e6c8d | 1164 | gv = gv_fetchmethod(stash, SvPV(sv, n_a)); |
a0d0e21e LW |
1165 | if (gv) cv = GvCV(gv); |
1166 | break; | |
1167 | } | |
1168 | cv = (CV*)SvRV(sv); | |
1169 | if (SvTYPE(cv) == SVt_PVCV) | |
1170 | break; | |
1171 | /* FALL THROUGH */ | |
1172 | case SVt_PVHV: | |
1173 | case SVt_PVAV: | |
cea2e8a9 | 1174 | Perl_croak(aTHX_ "Not a subroutine reference in overload table"); |
a0d0e21e LW |
1175 | return FALSE; |
1176 | case SVt_PVCV: | |
8ebc5c01 | 1177 | cv = (CV*)sv; |
1178 | break; | |
a0d0e21e | 1179 | case SVt_PVGV: |
8ebc5c01 | 1180 | if (!(cv = GvCVu((GV*)sv))) |
f6ec51f7 | 1181 | cv = sv_2cv(sv, &stash, &gv, FALSE); |
8ebc5c01 | 1182 | break; |
a0d0e21e LW |
1183 | } |
1184 | if (cv) filled=1; | |
1185 | else { | |
cea2e8a9 | 1186 | Perl_croak(aTHX_ "Method for operation %s not found in package %.256s during blessing\n", |
a0d0e21e LW |
1187 | cp,HvNAME(stash)); |
1188 | return FALSE; | |
1189 | } | |
1190 | } | |
a6006777 | 1191 | #else |
1192 | { | |
1193 | int filled = 0; | |
1194 | int i; | |
9607fc9c | 1195 | const char *cp; |
a6006777 | 1196 | SV* sv = NULL; |
a6006777 | 1197 | |
22c35a8c | 1198 | /* Work with "fallback" key, which we assume to be first in PL_AMG_names */ |
a6006777 | 1199 | |
155aba94 | 1200 | if ((cp = PL_AMG_names[0])) { |
a6006777 | 1201 | /* Try to find via inheritance. */ |
774d564b | 1202 | gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */ |
155aba94 GS |
1203 | if (gv) |
1204 | sv = GvSV(gv); | |
1205 | ||
1206 | if (!gv) | |
1207 | goto no_table; | |
1208 | else if (SvTRUE(sv)) | |
1209 | amt.fallback=AMGfallYES; | |
1210 | else if (SvOK(sv)) | |
1211 | amt.fallback=AMGfallNEVER; | |
a6006777 | 1212 | } |
1213 | ||
1214 | for (i = 1; i < NofAMmeth; i++) { | |
cea2e8a9 GS |
1215 | SV *cookie = sv_2mortal(Perl_newSVpvf(aTHX_ "(%s", cp = PL_AMG_names[i])); |
1216 | DEBUG_o( Perl_deb(aTHX_ "Checking overloading of `%s' in package `%.256s'\n", | |
44a8e56a | 1217 | cp, HvNAME(stash)) ); |
46fc3d4c | 1218 | /* don't fill the cache while looking up! */ |
1219 | gv = gv_fetchmeth(stash, SvPVX(cookie), SvCUR(cookie), -1); | |
1220 | cv = 0; | |
44a8e56a | 1221 | if(gv && (cv = GvCV(gv))) { |
44a8e56a | 1222 | if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil") |
1223 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) { | |
1224 | /* GvSV contains the name of the method. */ | |
1225 | GV *ngv; | |
1226 | ||
cea2e8a9 | 1227 | DEBUG_o( Perl_deb(aTHX_ "Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n", |
2d8e6c8d | 1228 | SvPV(GvSV(gv), n_a), cp, HvNAME(stash)) ); |
dc848c6f | 1229 | if (!SvPOK(GvSV(gv)) |
1230 | || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)), | |
1231 | FALSE))) | |
1232 | { | |
44a8e56a | 1233 | /* Can be an import stub (created by `can'). */ |
1234 | if (GvCVGEN(gv)) { | |
cea2e8a9 | 1235 | Perl_croak(aTHX_ "Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'", |
44a8e56a | 1236 | (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), |
1237 | cp, HvNAME(stash)); | |
1238 | } else | |
cea2e8a9 | 1239 | Perl_croak(aTHX_ "Can't resolve method `%.256s' overloading `%s' in package `%.256s'", |
44a8e56a | 1240 | (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), |
1241 | cp, HvNAME(stash)); | |
1242 | } | |
dc848c6f | 1243 | cv = GvCV(gv = ngv); |
44a8e56a | 1244 | } |
cea2e8a9 | 1245 | DEBUG_o( Perl_deb(aTHX_ "Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n", |
44a8e56a | 1246 | cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))), |
1247 | GvNAME(CvGV(cv))) ); | |
1248 | filled = 1; | |
1249 | } | |
a6006777 | 1250 | #endif |
1251 | amt.table[i]=(CV*)SvREFCNT_inc(cv); | |
a0d0e21e | 1252 | } |
a0d0e21e | 1253 | if (filled) { |
a6006777 | 1254 | AMT_AMAGIC_on(&amt); |
1255 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT)); | |
a0d0e21e LW |
1256 | return TRUE; |
1257 | } | |
1258 | } | |
a6006777 | 1259 | /* Here we have no table: */ |
774d564b | 1260 | no_table: |
a6006777 | 1261 | AMT_AMAGIC_off(&amt); |
1262 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS)); | |
a0d0e21e LW |
1263 | return FALSE; |
1264 | } | |
1265 | ||
a0d0e21e | 1266 | SV* |
864dbfa3 | 1267 | Perl_amagic_call(pTHX_ SV *left, SV *right, int method, int flags) |
a0d0e21e | 1268 | { |
11343788 | 1269 | dTHR; |
a0d0e21e LW |
1270 | MAGIC *mg; |
1271 | CV *cv; | |
1272 | CV **cvp=NULL, **ocvp=NULL; | |
1273 | AMT *amtp, *oamtp; | |
1274 | int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0; | |
ee239bfe | 1275 | int postpr = 0, force_cpy = 0, assignshift = assign ? 1 : 0; |
a0d0e21e LW |
1276 | HV* stash; |
1277 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) | |
1278 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c')) | |
a6006777 | 1279 | && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1280 | ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table | |
8ac85365 | 1281 | : (CV **) NULL)) |
748a9306 LW |
1282 | && ((cv = cvp[off=method+assignshift]) |
1283 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to | |
1284 | * usual method */ | |
1285 | (fl = 1, cv = cvp[off=method])))) { | |
a0d0e21e LW |
1286 | lr = -1; /* Call method for left argument */ |
1287 | } else { | |
1288 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { | |
1289 | int logic; | |
1290 | ||
1291 | /* look for substituted methods */ | |
ee239bfe | 1292 | /* In all the covered cases we should be called with assign==0. */ |
a0d0e21e LW |
1293 | switch (method) { |
1294 | case inc_amg: | |
ee239bfe IZ |
1295 | force_cpy = 1; |
1296 | if ((cv = cvp[off=add_ass_amg]) | |
1297 | || ((cv = cvp[off = add_amg]) && (force_cpy = 0, postpr = 1))) { | |
3280af22 | 1298 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1299 | } |
1300 | break; | |
1301 | case dec_amg: | |
ee239bfe IZ |
1302 | force_cpy = 1; |
1303 | if ((cv = cvp[off = subtr_ass_amg]) | |
1304 | || ((cv = cvp[off = subtr_amg]) && (force_cpy = 0, postpr=1))) { | |
3280af22 | 1305 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1306 | } |
1307 | break; | |
1308 | case bool__amg: | |
1309 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); | |
1310 | break; | |
1311 | case numer_amg: | |
1312 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); | |
1313 | break; | |
1314 | case string_amg: | |
1315 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); | |
1316 | break; | |
dc437b57 | 1317 | case not_amg: |
1318 | (void)((cv = cvp[off=bool__amg]) | |
1319 | || (cv = cvp[off=numer_amg]) | |
1320 | || (cv = cvp[off=string_amg])); | |
1321 | postpr = 1; | |
1322 | break; | |
748a9306 LW |
1323 | case copy_amg: |
1324 | { | |
76e3520e GS |
1325 | /* |
1326 | * SV* ref causes confusion with the interpreter variable of | |
1327 | * the same name | |
1328 | */ | |
1329 | SV* tmpRef=SvRV(left); | |
1330 | if (!SvROK(tmpRef) && SvTYPE(tmpRef) <= SVt_PVMG) { | |
fc36a67e | 1331 | /* |
1332 | * Just to be extra cautious. Maybe in some | |
1333 | * additional cases sv_setsv is safe, too. | |
1334 | */ | |
76e3520e | 1335 | SV* newref = newSVsv(tmpRef); |
748a9306 | 1336 | SvOBJECT_on(newref); |
76e3520e | 1337 | SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(tmpRef)); |
748a9306 LW |
1338 | return newref; |
1339 | } | |
1340 | } | |
1341 | break; | |
a0d0e21e | 1342 | case abs_amg: |
748a9306 | 1343 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e | 1344 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
748a9306 | 1345 | SV* nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e | 1346 | if (off1==lt_amg) { |
748a9306 | 1347 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1348 | lt_amg,AMGf_noright); |
1349 | logic = SvTRUE(lessp); | |
1350 | } else { | |
748a9306 | 1351 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1352 | ncmp_amg,AMGf_noright); |
1353 | logic = (SvNV(lessp) < 0); | |
1354 | } | |
1355 | if (logic) { | |
1356 | if (off==subtr_amg) { | |
1357 | right = left; | |
748a9306 | 1358 | left = nullsv; |
a0d0e21e LW |
1359 | lr = 1; |
1360 | } | |
1361 | } else { | |
1362 | return left; | |
1363 | } | |
1364 | } | |
1365 | break; | |
1366 | case neg_amg: | |
155aba94 | 1367 | if ((cv = cvp[off=subtr_amg])) { |
a0d0e21e LW |
1368 | right = left; |
1369 | left = sv_2mortal(newSViv(0)); | |
1370 | lr = 1; | |
1371 | } | |
1372 | break; | |
f5284f61 IZ |
1373 | case iter_amg: /* XXXX Eventually should do to_gv. */ |
1374 | case to_sv_amg: | |
1375 | case to_av_amg: | |
1376 | case to_hv_amg: | |
1377 | case to_gv_amg: | |
1378 | case to_cv_amg: | |
1379 | /* FAIL safe */ | |
1380 | return NULL; /* Delegate operation to standard mechanisms. */ | |
1381 | break; | |
a0d0e21e LW |
1382 | default: |
1383 | goto not_found; | |
1384 | } | |
1385 | if (!cv) goto not_found; | |
1386 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) | |
1387 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c')) | |
a6006777 | 1388 | && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1389 | ? (amtp = (AMT*)mg->mg_ptr)->table | |
8ac85365 | 1390 | : (CV **) NULL)) |
a0d0e21e LW |
1391 | && (cv = cvp[off=method])) { /* Method for right |
1392 | * argument found */ | |
1393 | lr=1; | |
748a9306 | 1394 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
4633a7c4 | 1395 | && (cvp=ocvp) && (lr = -1)) |
a0d0e21e LW |
1396 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
1397 | && !(flags & AMGf_unary)) { | |
1398 | /* We look for substitution for | |
1399 | * comparison operations and | |
fc36a67e | 1400 | * concatenation */ |
a0d0e21e LW |
1401 | if (method==concat_amg || method==concat_ass_amg |
1402 | || method==repeat_amg || method==repeat_ass_amg) { | |
1403 | return NULL; /* Delegate operation to string conversion */ | |
1404 | } | |
1405 | off = -1; | |
1406 | switch (method) { | |
1407 | case lt_amg: | |
1408 | case le_amg: | |
1409 | case gt_amg: | |
1410 | case ge_amg: | |
1411 | case eq_amg: | |
1412 | case ne_amg: | |
1413 | postpr = 1; off=ncmp_amg; break; | |
1414 | case slt_amg: | |
1415 | case sle_amg: | |
1416 | case sgt_amg: | |
1417 | case sge_amg: | |
1418 | case seq_amg: | |
1419 | case sne_amg: | |
1420 | postpr = 1; off=scmp_amg; break; | |
1421 | } | |
1422 | if (off != -1) cv = cvp[off]; | |
1423 | if (!cv) { | |
1424 | goto not_found; | |
1425 | } | |
1426 | } else { | |
a6006777 | 1427 | not_found: /* No method found, either report or croak */ |
a0d0e21e LW |
1428 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
1429 | notfound = 1; lr = -1; | |
1430 | } else if (cvp && (cv=cvp[nomethod_amg])) { | |
1431 | notfound = 1; lr = 1; | |
1432 | } else { | |
46fc3d4c | 1433 | SV *msg; |
774d564b | 1434 | if (off==-1) off=method; |
cea2e8a9 | 1435 | msg = sv_2mortal(Perl_newSVpvf(aTHX_ |
46fc3d4c | 1436 | "Operation `%s': no method found,%sargument %s%s%s%s", |
22c35a8c | 1437 | PL_AMG_names[method + assignshift], |
e7ea3e70 | 1438 | (flags & AMGf_unary ? " " : "\n\tleft "), |
a0d0e21e LW |
1439 | SvAMAGIC(left)? |
1440 | "in overloaded package ": | |
1441 | "has no overloaded magic", | |
1442 | SvAMAGIC(left)? | |
1443 | HvNAME(SvSTASH(SvRV(left))): | |
1444 | "", | |
1445 | SvAMAGIC(right)? | |
e7ea3e70 IZ |
1446 | ",\n\tright argument in overloaded package ": |
1447 | (flags & AMGf_unary | |
1448 | ? "" | |
1449 | : ",\n\tright argument has no overloaded magic"), | |
a0d0e21e LW |
1450 | SvAMAGIC(right)? |
1451 | HvNAME(SvSTASH(SvRV(right))): | |
46fc3d4c | 1452 | "")); |
a0d0e21e | 1453 | if (amtp && amtp->fallback >= AMGfallYES) { |
cea2e8a9 | 1454 | DEBUG_o( Perl_deb(aTHX_ "%s", SvPVX(msg)) ); |
a0d0e21e | 1455 | } else { |
894356b3 | 1456 | Perl_croak(aTHX_ "%"SVf, msg); |
a0d0e21e LW |
1457 | } |
1458 | return NULL; | |
1459 | } | |
ee239bfe | 1460 | force_cpy = force_cpy || assign; |
a0d0e21e LW |
1461 | } |
1462 | } | |
1463 | if (!notfound) { | |
cea2e8a9 | 1464 | DEBUG_o( Perl_deb(aTHX_ |
46fc3d4c | 1465 | "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n", |
22c35a8c | 1466 | PL_AMG_names[off], |
748a9306 LW |
1467 | method+assignshift==off? "" : |
1468 | " (initially `", | |
1469 | method+assignshift==off? "" : | |
22c35a8c | 1470 | PL_AMG_names[method+assignshift], |
748a9306 LW |
1471 | method+assignshift==off? "" : "')", |
1472 | flags & AMGf_unary? "" : | |
1473 | lr==1 ? " for right argument": " for left argument", | |
1474 | flags & AMGf_unary? " for argument" : "", | |
a0d0e21e LW |
1475 | HvNAME(stash), |
1476 | fl? ",\n\tassignment variant used": "") ); | |
ee239bfe | 1477 | } |
748a9306 LW |
1478 | /* Since we use shallow copy during assignment, we need |
1479 | * to dublicate the contents, probably calling user-supplied | |
1480 | * version of copy operator | |
1481 | */ | |
ee239bfe IZ |
1482 | /* We need to copy in following cases: |
1483 | * a) Assignment form was called. | |
1484 | * assignshift==1, assign==T, method + 1 == off | |
1485 | * b) Increment or decrement, called directly. | |
1486 | * assignshift==0, assign==0, method + 0 == off | |
1487 | * c) Increment or decrement, translated to assignment add/subtr. | |
1488 | * assignshift==0, assign==T, | |
1489 | * force_cpy == T | |
1490 | * d) Increment or decrement, translated to nomethod. | |
1491 | * assignshift==0, assign==0, | |
1492 | * force_cpy == T | |
1493 | * e) Assignment form translated to nomethod. | |
1494 | * assignshift==1, assign==T, method + 1 != off | |
1495 | * force_cpy == T | |
1496 | */ | |
1497 | /* off is method, method+assignshift, or a result of opcode substitution. | |
1498 | * In the latter case assignshift==0, so only notfound case is important. | |
1499 | */ | |
1500 | if (( (method + assignshift == off) | |
1501 | && (assign || (method == inc_amg) || (method == dec_amg))) | |
1502 | || force_cpy) | |
1503 | RvDEEPCP(left); | |
a0d0e21e LW |
1504 | { |
1505 | dSP; | |
1506 | BINOP myop; | |
1507 | SV* res; | |
54310121 | 1508 | bool oldcatch = CATCH_GET; |
a0d0e21e | 1509 | |
54310121 | 1510 | CATCH_SET(TRUE); |
a0d0e21e LW |
1511 | Zero(&myop, 1, BINOP); |
1512 | myop.op_last = (OP *) &myop; | |
1513 | myop.op_next = Nullop; | |
54310121 | 1514 | myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED; |
a0d0e21e | 1515 | |
e788e7d3 | 1516 | PUSHSTACKi(PERLSI_OVERLOAD); |
a0d0e21e | 1517 | ENTER; |
462e5cf6 | 1518 | SAVEOP(); |
533c011a | 1519 | PL_op = (OP *) &myop; |
3280af22 | 1520 | if (PERLDB_SUB && PL_curstash != PL_debstash) |
533c011a | 1521 | PL_op->op_private |= OPpENTERSUB_DB; |
a0d0e21e | 1522 | PUTBACK; |
cea2e8a9 | 1523 | pp_pushmark(); |
a0d0e21e | 1524 | |
924508f0 | 1525 | EXTEND(SP, notfound + 5); |
a0d0e21e LW |
1526 | PUSHs(lr>0? right: left); |
1527 | PUSHs(lr>0? left: right); | |
3280af22 | 1528 | PUSHs( lr > 0 ? &PL_sv_yes : ( assign ? &PL_sv_undef : &PL_sv_no )); |
a0d0e21e | 1529 | if (notfound) { |
22c35a8c | 1530 | PUSHs( sv_2mortal(newSVpv((char *)PL_AMG_names[method + assignshift],0))); |
a0d0e21e LW |
1531 | } |
1532 | PUSHs((SV*)cv); | |
1533 | PUTBACK; | |
1534 | ||
155aba94 | 1535 | if ((PL_op = Perl_pp_entersub(aTHX))) |
cea2e8a9 | 1536 | CALLRUNOPS(aTHX); |
a0d0e21e LW |
1537 | LEAVE; |
1538 | SPAGAIN; | |
1539 | ||
1540 | res=POPs; | |
ebafeae7 | 1541 | PUTBACK; |
d3acc0f7 | 1542 | POPSTACK; |
54310121 | 1543 | CATCH_SET(oldcatch); |
a0d0e21e | 1544 | |
a0d0e21e LW |
1545 | if (postpr) { |
1546 | int ans; | |
1547 | switch (method) { | |
1548 | case le_amg: | |
1549 | case sle_amg: | |
1550 | ans=SvIV(res)<=0; break; | |
1551 | case lt_amg: | |
1552 | case slt_amg: | |
1553 | ans=SvIV(res)<0; break; | |
1554 | case ge_amg: | |
1555 | case sge_amg: | |
1556 | ans=SvIV(res)>=0; break; | |
1557 | case gt_amg: | |
1558 | case sgt_amg: | |
1559 | ans=SvIV(res)>0; break; | |
1560 | case eq_amg: | |
1561 | case seq_amg: | |
1562 | ans=SvIV(res)==0; break; | |
1563 | case ne_amg: | |
1564 | case sne_amg: | |
1565 | ans=SvIV(res)!=0; break; | |
1566 | case inc_amg: | |
1567 | case dec_amg: | |
bbce6d69 | 1568 | SvSetSV(left,res); return left; |
dc437b57 | 1569 | case not_amg: |
fe7ac86a | 1570 | ans=!SvTRUE(res); break; |
a0d0e21e | 1571 | } |
54310121 | 1572 | return boolSV(ans); |
748a9306 LW |
1573 | } else if (method==copy_amg) { |
1574 | if (!SvROK(res)) { | |
cea2e8a9 | 1575 | Perl_croak(aTHX_ "Copy method did not return a reference"); |
748a9306 LW |
1576 | } |
1577 | return SvREFCNT_inc(SvRV(res)); | |
a0d0e21e LW |
1578 | } else { |
1579 | return res; | |
1580 | } | |
1581 | } | |
1582 | } |