Commit | Line | Data |
a0d0e21e |
1 | /* gv.c |
79072805 |
2 | * |
9607fc9c |
3 | * Copyright (c) 1991-1997, Larry Wall |
79072805 |
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 |
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 |
17 | */ |
18 | |
19 | #include "EXTERN.h" |
20 | #include "perl.h" |
21 | |
22 | GV * |
8ac85365 |
23 | gv_AVadd(register GV *gv) |
79072805 |
24 | { |
a0d0e21e |
25 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
26 | croak("Bad symbol for array"); |
79072805 |
27 | if (!GvAV(gv)) |
28 | GvAV(gv) = newAV(); |
29 | return gv; |
30 | } |
31 | |
32 | GV * |
8ac85365 |
33 | gv_HVadd(register GV *gv) |
79072805 |
34 | { |
a0d0e21e |
35 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
36 | croak("Bad symbol for hash"); |
79072805 |
37 | if (!GvHV(gv)) |
463ee0b2 |
38 | GvHV(gv) = newHV(); |
79072805 |
39 | return gv; |
40 | } |
41 | |
42 | GV * |
8ac85365 |
43 | gv_IOadd(register GV *gv) |
a0d0e21e |
44 | { |
45 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
46 | croak("Bad symbol for filehandle"); |
47 | if (!GvIOp(gv)) |
48 | GvIOp(gv) = newIO(); |
49 | return gv; |
50 | } |
51 | |
52 | GV * |
8ac85365 |
53 | gv_fetchfile(char *name) |
79072805 |
54 | { |
e858de61 |
55 | dTHR; |
53d95988 |
56 | char smallbuf[256]; |
57 | char *tmpbuf; |
8ebc5c01 |
58 | STRLEN tmplen; |
79072805 |
59 | GV *gv; |
60 | |
53d95988 |
61 | tmplen = strlen(name) + 2; |
62 | if (tmplen < sizeof smallbuf) |
63 | tmpbuf = smallbuf; |
64 | else |
65 | New(603, tmpbuf, tmplen + 1, char); |
66 | tmpbuf[0] = '_'; |
67 | tmpbuf[1] = '<'; |
68 | strcpy(tmpbuf + 2, name); |
3280af22 |
69 | gv = *(GV**)hv_fetch(PL_defstash, tmpbuf, tmplen, TRUE); |
8ebc5c01 |
70 | if (!isGV(gv)) |
3280af22 |
71 | gv_init(gv, PL_defstash, tmpbuf, tmplen, FALSE); |
53d95988 |
72 | if (tmpbuf != smallbuf) |
73 | Safefree(tmpbuf); |
79072805 |
74 | sv_setpv(GvSV(gv), name); |
8ebc5c01 |
75 | if (*name == '/' && (instr(name, "/lib/") || instr(name, ".pm"))) |
a5f75d66 |
76 | GvMULTI_on(gv); |
84902520 |
77 | if (PERLDB_LINE) |
93a17b20 |
78 | hv_magic(GvHVn(gv_AVadd(gv)), gv, 'L'); |
79072805 |
79 | return gv; |
80 | } |
81 | |
463ee0b2 |
82 | void |
8ac85365 |
83 | gv_init(GV *gv, HV *stash, char *name, STRLEN len, int multi) |
463ee0b2 |
84 | { |
0f15f207 |
85 | dTHR; |
463ee0b2 |
86 | register GP *gp; |
55d729e4 |
87 | bool doproto = SvTYPE(gv) > SVt_NULL; |
88 | char *proto = (doproto && SvPOK(gv)) ? SvPVX(gv) : NULL; |
463ee0b2 |
89 | |
dc437b57 |
90 | sv_upgrade((SV*)gv, SVt_PVGV); |
55d729e4 |
91 | if (SvLEN(gv)) { |
92 | if (proto) { |
93 | SvPVX(gv) = NULL; |
94 | SvLEN(gv) = 0; |
95 | SvPOK_off(gv); |
96 | } else |
97 | Safefree(SvPVX(gv)); |
98 | } |
44a8e56a |
99 | Newz(602, gp, 1, GP); |
8990e307 |
100 | GvGP(gv) = gp_ref(gp); |
463ee0b2 |
101 | GvSV(gv) = NEWSV(72,0); |
3280af22 |
102 | GvLINE(gv) = PL_curcop->cop_line; |
103 | GvFILEGV(gv) = PL_curcop->cop_filegv; |
005a453c |
104 | GvCVGEN(gv) = 0; |
463ee0b2 |
105 | GvEGV(gv) = gv; |
106 | sv_magic((SV*)gv, (SV*)gv, '*', name, len); |
85aff577 |
107 | GvSTASH(gv) = (HV*)SvREFCNT_inc(stash); |
a0d0e21e |
108 | GvNAME(gv) = savepvn(name, len); |
463ee0b2 |
109 | GvNAMELEN(gv) = len; |
110 | if (multi) |
a5f75d66 |
111 | GvMULTI_on(gv); |
55d729e4 |
112 | if (doproto) { /* Replicate part of newSUB here. */ |
57ff9a15 |
113 | SvIOK_off(gv); |
55d729e4 |
114 | ENTER; |
b099ddc0 |
115 | /* XXX unsafe for threads if eval_owner isn't held */ |
55d729e4 |
116 | start_subparse(0,0); /* Create CV in compcv. */ |
3280af22 |
117 | GvCV(gv) = PL_compcv; |
55d729e4 |
118 | LEAVE; |
119 | |
3280af22 |
120 | PL_sub_generation++; |
55d729e4 |
121 | CvGV(GvCV(gv)) = (GV*)SvREFCNT_inc(gv); |
3280af22 |
122 | CvFILEGV(GvCV(gv)) = PL_curcop->cop_filegv; |
123 | CvSTASH(GvCV(gv)) = PL_curstash; |
55d729e4 |
124 | #ifdef USE_THREADS |
125 | CvOWNER(GvCV(gv)) = 0; |
1cfa4ec7 |
126 | if (!CvMUTEXP(GvCV(gv))) { |
b0a484d2 |
127 | New(666, CvMUTEXP(GvCV(gv)), 1, perl_mutex); |
1cfa4ec7 |
128 | MUTEX_INIT(CvMUTEXP(GvCV(gv))); |
129 | } |
55d729e4 |
130 | #endif /* USE_THREADS */ |
131 | if (proto) { |
132 | sv_setpv((SV*)GvCV(gv), proto); |
133 | Safefree(proto); |
134 | } |
135 | } |
463ee0b2 |
136 | } |
137 | |
76e3520e |
138 | STATIC void |
8ac85365 |
139 | gv_init_sv(GV *gv, I32 sv_type) |
a0d0e21e |
140 | { |
141 | switch (sv_type) { |
142 | case SVt_PVIO: |
143 | (void)GvIOn(gv); |
144 | break; |
145 | case SVt_PVAV: |
146 | (void)GvAVn(gv); |
147 | break; |
148 | case SVt_PVHV: |
149 | (void)GvHVn(gv); |
150 | break; |
151 | } |
152 | } |
153 | |
79072805 |
154 | GV * |
8ac85365 |
155 | gv_fetchmeth(HV *stash, char *name, STRLEN len, I32 level) |
79072805 |
156 | { |
157 | AV* av; |
463ee0b2 |
158 | GV* topgv; |
79072805 |
159 | GV* gv; |
463ee0b2 |
160 | GV** gvp; |
748a9306 |
161 | CV* cv; |
a0d0e21e |
162 | |
163 | if (!stash) |
164 | return 0; |
44a8e56a |
165 | if ((level > 100) || (level < -100)) |
3e0ccd42 |
166 | croak("Recursive inheritance detected while looking for method '%s' in package '%s'", |
167 | name, HvNAME(stash)); |
463ee0b2 |
168 | |
463ee0b2 |
169 | DEBUG_o( deb("Looking for method %s in package %s\n",name,HvNAME(stash)) ); |
44a8e56a |
170 | |
171 | gvp = (GV**)hv_fetch(stash, name, len, (level >= 0)); |
172 | if (!gvp) |
173 | topgv = Nullgv; |
174 | else { |
175 | topgv = *gvp; |
176 | if (SvTYPE(topgv) != SVt_PVGV) |
177 | gv_init(topgv, stash, name, len, TRUE); |
178 | if (cv = GvCV(topgv)) { |
179 | /* If genuine method or valid cache entry, use it */ |
3280af22 |
180 | if (!GvCVGEN(topgv) || GvCVGEN(topgv) == PL_sub_generation) |
7a4c00b4 |
181 | return topgv; |
44a8e56a |
182 | /* Stale cached entry: junk it */ |
183 | SvREFCNT_dec(cv); |
184 | GvCV(topgv) = cv = Nullcv; |
185 | GvCVGEN(topgv) = 0; |
748a9306 |
186 | } |
3280af22 |
187 | else if (GvCVGEN(topgv) == PL_sub_generation) |
005a453c |
188 | return 0; /* cache indicates sub doesn't exist */ |
463ee0b2 |
189 | } |
79072805 |
190 | |
9607fc9c |
191 | gvp = (GV**)hv_fetch(stash, "ISA", 3, FALSE); |
3280af22 |
192 | av = (gvp && (gv = *gvp) && gv != (GV*)&PL_sv_undef) ? GvAV(gv) : Nullav; |
9607fc9c |
193 | |
fb73857a |
194 | /* create and re-create @.*::SUPER::ISA on demand */ |
195 | if (!av || !SvMAGIC(av)) { |
9607fc9c |
196 | char* packname = HvNAME(stash); |
197 | STRLEN packlen = strlen(packname); |
198 | |
199 | if (packlen >= 7 && strEQ(packname + packlen - 7, "::SUPER")) { |
200 | HV* basestash; |
201 | |
202 | packlen -= 7; |
203 | basestash = gv_stashpvn(packname, packlen, TRUE); |
204 | gvp = (GV**)hv_fetch(basestash, "ISA", 3, FALSE); |
3280af22 |
205 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
e858de61 |
206 | dTHR; /* just for SvREFCNT_dec */ |
9607fc9c |
207 | gvp = (GV**)hv_fetch(stash, "ISA", 3, TRUE); |
208 | if (!gvp || !(gv = *gvp)) |
209 | croak("Cannot create %s::ISA", HvNAME(stash)); |
210 | if (SvTYPE(gv) != SVt_PVGV) |
211 | gv_init(gv, stash, "ISA", 3, TRUE); |
212 | SvREFCNT_dec(GvAV(gv)); |
213 | GvAV(gv) = (AV*)SvREFCNT_inc(av); |
214 | } |
215 | } |
216 | } |
217 | |
218 | if (av) { |
79072805 |
219 | SV** svp = AvARRAY(av); |
93965878 |
220 | /* NOTE: No support for tied ISA */ |
221 | I32 items = AvFILLp(av) + 1; |
79072805 |
222 | while (items--) { |
79072805 |
223 | SV* sv = *svp++; |
a0d0e21e |
224 | HV* basestash = gv_stashsv(sv, FALSE); |
9bbf4081 |
225 | if (!basestash) { |
d008e5eb |
226 | dTHR; /* just for ckWARN */ |
599cee73 |
227 | if (ckWARN(WARN_MISC)) |
228 | warner(WARN_MISC, "Can't locate package %s for @%s::ISA", |
463ee0b2 |
229 | SvPVX(sv), HvNAME(stash)); |
79072805 |
230 | continue; |
231 | } |
44a8e56a |
232 | gv = gv_fetchmeth(basestash, name, len, |
233 | (level >= 0) ? level + 1 : level - 1); |
234 | if (gv) |
235 | goto gotcha; |
79072805 |
236 | } |
237 | } |
a0d0e21e |
238 | |
9607fc9c |
239 | /* if at top level, try UNIVERSAL */ |
240 | |
44a8e56a |
241 | if (level == 0 || level == -1) { |
9607fc9c |
242 | HV* lastchance; |
243 | |
dc437b57 |
244 | if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) { |
44a8e56a |
245 | if (gv = gv_fetchmeth(lastchance, name, len, |
246 | (level >= 0) ? level + 1 : level - 1)) { |
247 | gotcha: |
dc848c6f |
248 | /* |
249 | * Cache method in topgv if: |
250 | * 1. topgv has no synonyms (else inheritance crosses wires) |
251 | * 2. method isn't a stub (else AUTOLOAD fails spectacularly) |
252 | */ |
253 | if (topgv && |
254 | GvREFCNT(topgv) == 1 && |
255 | (cv = GvCV(gv)) && |
256 | (CvROOT(cv) || CvXSUB(cv))) |
257 | { |
44a8e56a |
258 | if (cv = GvCV(topgv)) |
259 | SvREFCNT_dec(cv); |
260 | GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv)); |
3280af22 |
261 | GvCVGEN(topgv) = PL_sub_generation; |
44a8e56a |
262 | } |
a0d0e21e |
263 | return gv; |
264 | } |
005a453c |
265 | else if (topgv && GvREFCNT(topgv) == 1) { |
266 | /* cache the fact that the method is not defined */ |
3280af22 |
267 | GvCVGEN(topgv) = PL_sub_generation; |
005a453c |
268 | } |
a0d0e21e |
269 | } |
270 | } |
271 | |
79072805 |
272 | return 0; |
273 | } |
274 | |
275 | GV * |
8ac85365 |
276 | gv_fetchmethod(HV *stash, char *name) |
463ee0b2 |
277 | { |
dc848c6f |
278 | return gv_fetchmethod_autoload(stash, name, TRUE); |
279 | } |
280 | |
281 | GV * |
8ac85365 |
282 | gv_fetchmethod_autoload(HV *stash, char *name, I32 autoload) |
dc848c6f |
283 | { |
0f15f207 |
284 | dTHR; |
463ee0b2 |
285 | register char *nend; |
a0d0e21e |
286 | char *nsplit = 0; |
287 | GV* gv; |
463ee0b2 |
288 | |
289 | for (nend = name; *nend; nend++) { |
9607fc9c |
290 | if (*nend == '\'') |
a0d0e21e |
291 | nsplit = nend; |
9607fc9c |
292 | else if (*nend == ':' && *(nend + 1) == ':') |
293 | nsplit = ++nend; |
a0d0e21e |
294 | } |
295 | if (nsplit) { |
a0d0e21e |
296 | char *origname = name; |
297 | name = nsplit + 1; |
a0d0e21e |
298 | if (*nsplit == ':') |
299 | --nsplit; |
9607fc9c |
300 | if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) { |
301 | /* ->SUPER::method should really be looked up in original stash */ |
fc36a67e |
302 | SV *tmpstr = sv_2mortal(newSVpvf("%s::SUPER", |
3280af22 |
303 | HvNAME(PL_curcop->cop_stash))); |
9607fc9c |
304 | stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE); |
305 | DEBUG_o( deb("Treating %s as %s::%s\n", |
306 | origname, HvNAME(stash), name) ); |
4633a7c4 |
307 | } |
9607fc9c |
308 | else |
309 | stash = gv_stashpvn(origname, nsplit - origname, TRUE); |
4633a7c4 |
310 | } |
311 | |
9607fc9c |
312 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
a0d0e21e |
313 | if (!gv) { |
702887b4 |
314 | if (strEQ(name,"import")) |
3280af22 |
315 | gv = (GV*)&PL_sv_yes; |
dc848c6f |
316 | else if (autoload) |
54310121 |
317 | gv = gv_autoload4(stash, name, nend - name, TRUE); |
463ee0b2 |
318 | } |
dc848c6f |
319 | else if (autoload) { |
320 | CV* cv = GvCV(gv); |
09280a33 |
321 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
322 | GV* stubgv; |
323 | GV* autogv; |
324 | |
325 | if (CvANON(cv)) |
326 | stubgv = gv; |
327 | else { |
328 | stubgv = CvGV(cv); |
329 | if (GvCV(stubgv) != cv) /* orphaned import */ |
330 | stubgv = gv; |
331 | } |
332 | autogv = gv_autoload4(GvSTASH(stubgv), |
333 | GvNAME(stubgv), GvNAMELEN(stubgv), TRUE); |
dc848c6f |
334 | if (autogv) |
335 | gv = autogv; |
336 | } |
337 | } |
44a8e56a |
338 | |
339 | return gv; |
340 | } |
341 | |
342 | GV* |
8ac85365 |
343 | gv_autoload4(HV *stash, char *name, STRLEN len, I32 method) |
44a8e56a |
344 | { |
d008e5eb |
345 | dTHR; |
44a8e56a |
346 | static char autoload[] = "AUTOLOAD"; |
347 | static STRLEN autolen = 8; |
348 | GV* gv; |
349 | CV* cv; |
350 | HV* varstash; |
351 | GV* vargv; |
352 | SV* varsv; |
353 | |
354 | if (len == autolen && strnEQ(name, autoload, autolen)) |
355 | return Nullgv; |
dc848c6f |
356 | if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE))) |
357 | return Nullgv; |
358 | cv = GvCV(gv); |
359 | |
360 | /* |
361 | * Inheriting AUTOLOAD for non-methods works ... for now. |
362 | */ |
599cee73 |
363 | if (ckWARN(WARN_DEPRECATED) && !method && |
364 | (GvCVGEN(gv) || GvSTASH(gv) != stash)) |
365 | warner(WARN_DEPRECATED, |
dc848c6f |
366 | "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated", |
367 | HvNAME(stash), (int)len, name); |
44a8e56a |
368 | |
369 | /* |
370 | * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name. |
371 | * The subroutine's original name may not be "AUTOLOAD", so we don't |
372 | * use that, but for lack of anything better we will use the sub's |
373 | * original package to look up $AUTOLOAD. |
374 | */ |
375 | varstash = GvSTASH(CvGV(cv)); |
376 | vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE); |
377 | if (!isGV(vargv)) |
378 | gv_init(vargv, varstash, autoload, autolen, FALSE); |
379 | varsv = GvSV(vargv); |
380 | sv_setpv(varsv, HvNAME(stash)); |
381 | sv_catpvn(varsv, "::", 2); |
382 | sv_catpvn(varsv, name, len); |
383 | SvTAINTED_off(varsv); |
a0d0e21e |
384 | return gv; |
385 | } |
386 | |
387 | HV* |
8ac85365 |
388 | gv_stashpv(char *name, I32 create) |
a0d0e21e |
389 | { |
dc437b57 |
390 | return gv_stashpvn(name, strlen(name), create); |
391 | } |
392 | |
393 | HV* |
8ac85365 |
394 | gv_stashpvn(char *name, U32 namelen, I32 create) |
dc437b57 |
395 | { |
46fc3d4c |
396 | char smallbuf[256]; |
397 | char *tmpbuf; |
a0d0e21e |
398 | HV *stash; |
399 | GV *tmpgv; |
dc437b57 |
400 | |
46fc3d4c |
401 | if (namelen + 3 < sizeof smallbuf) |
402 | tmpbuf = smallbuf; |
403 | else |
404 | New(606, tmpbuf, namelen + 3, char); |
dc437b57 |
405 | Copy(name,tmpbuf,namelen,char); |
406 | tmpbuf[namelen++] = ':'; |
407 | tmpbuf[namelen++] = ':'; |
408 | tmpbuf[namelen] = '\0'; |
46fc3d4c |
409 | tmpgv = gv_fetchpv(tmpbuf, create, SVt_PVHV); |
410 | if (tmpbuf != smallbuf) |
411 | Safefree(tmpbuf); |
a0d0e21e |
412 | if (!tmpgv) |
413 | return 0; |
414 | if (!GvHV(tmpgv)) |
415 | GvHV(tmpgv) = newHV(); |
416 | stash = GvHV(tmpgv); |
417 | if (!HvNAME(stash)) |
418 | HvNAME(stash) = savepv(name); |
419 | return stash; |
463ee0b2 |
420 | } |
421 | |
a0d0e21e |
422 | HV* |
8ac85365 |
423 | gv_stashsv(SV *sv, I32 create) |
a0d0e21e |
424 | { |
dc437b57 |
425 | register char *ptr; |
426 | STRLEN len; |
427 | ptr = SvPV(sv,len); |
428 | return gv_stashpvn(ptr, len, create); |
a0d0e21e |
429 | } |
430 | |
431 | |
463ee0b2 |
432 | GV * |
8ac85365 |
433 | gv_fetchpv(char *nambeg, I32 add, I32 sv_type) |
79072805 |
434 | { |
11343788 |
435 | dTHR; |
463ee0b2 |
436 | register char *name = nambeg; |
437 | register GV *gv = 0; |
79072805 |
438 | GV**gvp; |
79072805 |
439 | I32 len; |
440 | register char *namend; |
463ee0b2 |
441 | HV *stash = 0; |
9607fc9c |
442 | U32 add_gvflags = 0; |
79072805 |
443 | |
c07a80fd |
444 | if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */ |
445 | name++; |
446 | |
79072805 |
447 | for (namend = name; *namend; namend++) { |
463ee0b2 |
448 | if ((*namend == '\'' && namend[1]) || |
449 | (*namend == ':' && namend[1] == ':')) |
450 | { |
463ee0b2 |
451 | if (!stash) |
3280af22 |
452 | stash = PL_defstash; |
dc437b57 |
453 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0d0e21e |
454 | return Nullgv; |
463ee0b2 |
455 | |
85e6fe83 |
456 | len = namend - name; |
457 | if (len > 0) { |
3c78fafa |
458 | char smallbuf[256]; |
62b57502 |
459 | char *tmpbuf; |
62b57502 |
460 | |
3c78fafa |
461 | if (len + 3 < sizeof smallbuf) |
462 | tmpbuf = smallbuf; |
62b57502 |
463 | else |
464 | New(601, tmpbuf, len+3, char); |
a0d0e21e |
465 | Copy(name, tmpbuf, len, char); |
466 | tmpbuf[len++] = ':'; |
467 | tmpbuf[len++] = ':'; |
468 | tmpbuf[len] = '\0'; |
463ee0b2 |
469 | gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); |
6fa846a0 |
470 | gv = gvp ? *gvp : Nullgv; |
3280af22 |
471 | if (gv && gv != (GV*)&PL_sv_undef) { |
6fa846a0 |
472 | if (SvTYPE(gv) != SVt_PVGV) |
0f303493 |
473 | gv_init(gv, stash, tmpbuf, len, (add & GV_ADDMULTI)); |
6fa846a0 |
474 | else |
475 | GvMULTI_on(gv); |
476 | } |
3c78fafa |
477 | if (tmpbuf != smallbuf) |
62b57502 |
478 | Safefree(tmpbuf); |
3280af22 |
479 | if (!gv || gv == (GV*)&PL_sv_undef) |
a0d0e21e |
480 | return Nullgv; |
85e6fe83 |
481 | |
463ee0b2 |
482 | if (!(stash = GvHV(gv))) |
483 | stash = GvHV(gv) = newHV(); |
85e6fe83 |
484 | |
463ee0b2 |
485 | if (!HvNAME(stash)) |
a0d0e21e |
486 | HvNAME(stash) = savepvn(nambeg, namend - nambeg); |
463ee0b2 |
487 | } |
488 | |
489 | if (*namend == ':') |
490 | namend++; |
491 | namend++; |
492 | name = namend; |
493 | if (!*name) |
3280af22 |
494 | return gv ? gv : (GV*)*hv_fetch(PL_defstash, "main::", 6, TRUE); |
79072805 |
495 | } |
79072805 |
496 | } |
a0d0e21e |
497 | len = namend - name; |
498 | if (!len) |
499 | len = 1; |
463ee0b2 |
500 | |
501 | /* No stash in name, so see how we can default */ |
502 | |
503 | if (!stash) { |
b86a2fa7 |
504 | if (isIDFIRST(*name) |
505 | || (IN_UTF8 && ((*name & 0xc0) == 0xc0) && isIDFIRST_utf8((U8*)name))) |
506 | { |
9607fc9c |
507 | bool global = FALSE; |
508 | |
463ee0b2 |
509 | if (isUPPER(*name)) { |
9d116dd7 |
510 | if (*name == 'S' && ( |
511 | strEQ(name, "SIG") || |
512 | strEQ(name, "STDIN") || |
513 | strEQ(name, "STDOUT") || |
514 | strEQ(name, "STDERR"))) |
515 | global = TRUE; |
516 | else if (*name == 'I' && strEQ(name, "INC")) |
517 | global = TRUE; |
518 | else if (*name == 'E' && strEQ(name, "ENV")) |
519 | global = TRUE; |
463ee0b2 |
520 | else if (*name == 'A' && ( |
521 | strEQ(name, "ARGV") || |
9d116dd7 |
522 | strEQ(name, "ARGVOUT"))) |
463ee0b2 |
523 | global = TRUE; |
524 | } |
525 | else if (*name == '_' && !name[1]) |
526 | global = TRUE; |
9607fc9c |
527 | |
463ee0b2 |
528 | if (global) |
3280af22 |
529 | stash = PL_defstash; |
530 | else if ((COP*)PL_curcop == &PL_compiling) { |
531 | stash = PL_curstash; |
532 | if (add && (PL_hints & HINT_STRICT_VARS) && |
748a9306 |
533 | sv_type != SVt_PVCV && |
534 | sv_type != SVt_PVGV && |
4633a7c4 |
535 | sv_type != SVt_PVFM && |
c07a80fd |
536 | sv_type != SVt_PVIO && |
377b8fbc |
537 | !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) ) |
748a9306 |
538 | { |
4633a7c4 |
539 | gvp = (GV**)hv_fetch(stash,name,len,0); |
540 | if (!gvp || |
3280af22 |
541 | *gvp == (GV*)&PL_sv_undef || |
a5f75d66 |
542 | SvTYPE(*gvp) != SVt_PVGV) |
543 | { |
4633a7c4 |
544 | stash = 0; |
a5f75d66 |
545 | } |
546 | else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) || |
547 | sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) || |
548 | sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) ) |
4633a7c4 |
549 | { |
a5f75d66 |
550 | warn("Variable \"%c%s\" is not imported", |
4633a7c4 |
551 | sv_type == SVt_PVAV ? '@' : |
552 | sv_type == SVt_PVHV ? '%' : '$', |
553 | name); |
8ebc5c01 |
554 | if (GvCVu(*gvp)) |
4633a7c4 |
555 | warn("(Did you mean &%s instead?)\n", name); |
a0d0e21e |
556 | stash = 0; |
4633a7c4 |
557 | } |
a0d0e21e |
558 | } |
85e6fe83 |
559 | } |
463ee0b2 |
560 | else |
3280af22 |
561 | stash = PL_curcop->cop_stash; |
463ee0b2 |
562 | } |
563 | else |
3280af22 |
564 | stash = PL_defstash; |
463ee0b2 |
565 | } |
566 | |
567 | /* By this point we should have a stash and a name */ |
568 | |
a0d0e21e |
569 | if (!stash) { |
93233ece |
570 | if (!add) |
a0d0e21e |
571 | return Nullgv; |
462551cc |
572 | { |
2c4aebbd |
573 | char sv_type_char = ((sv_type == SVt_PV) ? '$' |
574 | : (sv_type == SVt_PVAV) ? '@' |
575 | : (sv_type == SVt_PVHV) ? '%' |
576 | : 0); |
577 | if (sv_type_char) |
578 | warn("Global symbol \"%c%s\" requires explicit package name", |
579 | sv_type_char, name); |
580 | else |
93233ece |
581 | warn("Global symbol \"%s\" requires explicit package name", |
582 | name); |
a0d0e21e |
583 | } |
3280af22 |
584 | ++PL_error_count; |
585 | stash = PL_curstash ? PL_curstash : PL_defstash; /* avoid core dumps */ |
93233ece |
586 | add_gvflags = ((sv_type == SVt_PV) ? GVf_IMPORTED_SV |
587 | : (sv_type == SVt_PVAV) ? GVf_IMPORTED_AV |
588 | : (sv_type == SVt_PVHV) ? GVf_IMPORTED_HV |
589 | : 0); |
a0d0e21e |
590 | } |
591 | |
592 | if (!SvREFCNT(stash)) /* symbol table under destruction */ |
593 | return Nullgv; |
594 | |
79072805 |
595 | gvp = (GV**)hv_fetch(stash,name,len,add); |
3280af22 |
596 | if (!gvp || *gvp == (GV*)&PL_sv_undef) |
79072805 |
597 | return Nullgv; |
598 | gv = *gvp; |
599 | if (SvTYPE(gv) == SVt_PVGV) { |
a0d0e21e |
600 | if (add) { |
a5f75d66 |
601 | GvMULTI_on(gv); |
a0d0e21e |
602 | gv_init_sv(gv, sv_type); |
603 | } |
79072805 |
604 | return gv; |
55d729e4 |
605 | } else if (add & GV_NOINIT) { |
606 | return gv; |
79072805 |
607 | } |
93a17b20 |
608 | |
609 | /* Adding a new symbol */ |
610 | |
55d729e4 |
611 | if (add & GV_ADDWARN) |
a0d0e21e |
612 | warn("Had to create %s unexpectedly", nambeg); |
55d729e4 |
613 | gv_init(gv, stash, name, len, add & GV_ADDMULTI); |
a0d0e21e |
614 | gv_init_sv(gv, sv_type); |
9607fc9c |
615 | GvFLAGS(gv) |= add_gvflags; |
93a17b20 |
616 | |
617 | /* set up magic where warranted */ |
618 | switch (*name) { |
a0d0e21e |
619 | case 'A': |
620 | if (strEQ(name, "ARGV")) { |
621 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; |
622 | } |
623 | break; |
624 | |
ed6116ce |
625 | case 'a': |
626 | case 'b': |
627 | if (len == 1) |
a5f75d66 |
628 | GvMULTI_on(gv); |
ed6116ce |
629 | break; |
a0d0e21e |
630 | case 'E': |
631 | if (strnEQ(name, "EXPORT", 6)) |
a5f75d66 |
632 | GvMULTI_on(gv); |
a0d0e21e |
633 | break; |
463ee0b2 |
634 | case 'I': |
635 | if (strEQ(name, "ISA")) { |
636 | AV* av = GvAVn(gv); |
a5f75d66 |
637 | GvMULTI_on(gv); |
a0d0e21e |
638 | sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0); |
93965878 |
639 | /* NOTE: No support for tied ISA */ |
55d729e4 |
640 | if ((add & GV_ADDMULTI) && strEQ(nambeg,"AnyDBM_File::ISA") |
641 | && AvFILLp(av) == -1) |
85e6fe83 |
642 | { |
a0d0e21e |
643 | char *pname; |
644 | av_push(av, newSVpv(pname = "NDBM_File",0)); |
dc437b57 |
645 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
646 | av_push(av, newSVpv(pname = "DB_File",0)); |
dc437b57 |
647 | gv_stashpvn(pname, 7, TRUE); |
a0d0e21e |
648 | av_push(av, newSVpv(pname = "GDBM_File",0)); |
dc437b57 |
649 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
650 | av_push(av, newSVpv(pname = "SDBM_File",0)); |
dc437b57 |
651 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
652 | av_push(av, newSVpv(pname = "ODBM_File",0)); |
dc437b57 |
653 | gv_stashpvn(pname, 9, TRUE); |
85e6fe83 |
654 | } |
463ee0b2 |
655 | } |
656 | break; |
a0d0e21e |
657 | #ifdef OVERLOAD |
658 | case 'O': |
659 | if (strEQ(name, "OVERLOAD")) { |
660 | HV* hv = GvHVn(gv); |
a5f75d66 |
661 | GvMULTI_on(gv); |
ea0efc06 |
662 | hv_magic(hv, gv, 'A'); |
a0d0e21e |
663 | } |
664 | break; |
665 | #endif /* OVERLOAD */ |
93a17b20 |
666 | case 'S': |
667 | if (strEQ(name, "SIG")) { |
668 | HV *hv; |
dc437b57 |
669 | I32 i; |
3280af22 |
670 | PL_siggv = gv; |
671 | GvMULTI_on(PL_siggv); |
672 | hv = GvHVn(PL_siggv); |
673 | hv_magic(hv, PL_siggv, 'S'); |
22c35a8c |
674 | for(i=1;PL_sig_name[i];i++) { |
dc437b57 |
675 | SV ** init; |
22c35a8c |
676 | init=hv_fetch(hv,PL_sig_name[i],strlen(PL_sig_name[i]),1); |
dc437b57 |
677 | if(init) |
3280af22 |
678 | sv_setsv(*init,&PL_sv_undef); |
22c35a8c |
679 | PL_psig_ptr[i] = 0; |
680 | PL_psig_name[i] = 0; |
dc437b57 |
681 | } |
93a17b20 |
682 | } |
683 | break; |
684 | |
685 | case '&': |
463ee0b2 |
686 | if (len > 1) |
687 | break; |
3280af22 |
688 | PL_ampergv = gv; |
689 | PL_sawampersand = TRUE; |
a0d0e21e |
690 | goto ro_magicalize; |
93a17b20 |
691 | |
692 | case '`': |
463ee0b2 |
693 | if (len > 1) |
694 | break; |
3280af22 |
695 | PL_leftgv = gv; |
696 | PL_sawampersand = TRUE; |
a0d0e21e |
697 | goto ro_magicalize; |
93a17b20 |
698 | |
699 | case '\'': |
463ee0b2 |
700 | if (len > 1) |
701 | break; |
3280af22 |
702 | PL_rightgv = gv; |
703 | PL_sawampersand = TRUE; |
a0d0e21e |
704 | goto ro_magicalize; |
93a17b20 |
705 | |
706 | case ':': |
463ee0b2 |
707 | if (len > 1) |
708 | break; |
3280af22 |
709 | sv_setpv(GvSV(gv),PL_chopset); |
93a17b20 |
710 | goto magicalize; |
711 | |
ff0cee69 |
712 | case '?': |
713 | if (len > 1) |
714 | break; |
715 | #ifdef COMPLEX_STATUS |
07f14f54 |
716 | (void)SvUPGRADE(GvSV(gv), SVt_PVLV); |
ff0cee69 |
717 | #endif |
718 | goto magicalize; |
719 | |
067391ea |
720 | case '!': |
4318d5a0 |
721 | if (len > 1) |
067391ea |
722 | break; |
3280af22 |
723 | if (sv_type > SVt_PV && PL_curcop != &PL_compiling) { |
067391ea |
724 | HV* stash = gv_stashpvn("Errno",5,FALSE); |
725 | if(!stash || !(gv_fetchmethod(stash, "TIEHASH"))) { |
726 | dSP; |
727 | PUTBACK; |
728 | perl_require_pv("Errno.pm"); |
729 | SPAGAIN; |
730 | stash = gv_stashpvn("Errno",5,FALSE); |
731 | if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) |
1d2dff63 |
732 | croak("Can't use %%! because Errno.pm is not available"); |
067391ea |
733 | } |
734 | } |
735 | goto magicalize; |
6cef1e77 |
736 | case '-': |
737 | if (len > 1) |
738 | break; |
739 | else { |
740 | AV* av = GvAVn(gv); |
741 | sv_magic((SV*)av, Nullsv, 'D', Nullch, 0); |
742 | } |
743 | goto magicalize; |
93a17b20 |
744 | case '#': |
a0d0e21e |
745 | case '*': |
599cee73 |
746 | if (ckWARN(WARN_DEPRECATED) && len == 1 && sv_type == SVt_PV) |
747 | warner(WARN_DEPRECATED, "Use of $%s is deprecated", name); |
a0d0e21e |
748 | /* FALL THROUGH */ |
749 | case '[': |
93a17b20 |
750 | case '^': |
751 | case '~': |
752 | case '=': |
93a17b20 |
753 | case '%': |
754 | case '.': |
93a17b20 |
755 | case '(': |
756 | case ')': |
757 | case '<': |
758 | case '>': |
759 | case ',': |
760 | case '\\': |
761 | case '/': |
93a17b20 |
762 | case '|': |
748a9306 |
763 | case '\001': |
599cee73 |
764 | case '\002': |
49460fe6 |
765 | case '\003': |
93a17b20 |
766 | case '\004': |
ad8898e0 |
767 | case '\005': |
748a9306 |
768 | case '\006': |
a0d0e21e |
769 | case '\010': |
9d116dd7 |
770 | case '\011': /* NOT \t in EBCDIC */ |
ad8898e0 |
771 | case '\017': |
93a17b20 |
772 | case '\020': |
773 | case '\024': |
774 | case '\027': |
463ee0b2 |
775 | if (len > 1) |
776 | break; |
777 | goto magicalize; |
6cef1e77 |
778 | case '\023': |
779 | if (len > 1) |
780 | break; |
781 | goto ro_magicalize; |
463ee0b2 |
782 | |
a0d0e21e |
783 | case '+': |
6cef1e77 |
784 | if (len > 1) |
785 | break; |
786 | else { |
787 | AV* av = GvAVn(gv); |
788 | sv_magic((SV*)av, (SV*)av, 'D', Nullch, 0); |
789 | } |
790 | /* FALL THROUGH */ |
463ee0b2 |
791 | case '1': |
792 | case '2': |
793 | case '3': |
794 | case '4': |
795 | case '5': |
796 | case '6': |
797 | case '7': |
798 | case '8': |
799 | case '9': |
a0d0e21e |
800 | ro_magicalize: |
801 | SvREADONLY_on(GvSV(gv)); |
93a17b20 |
802 | magicalize: |
463ee0b2 |
803 | sv_magic(GvSV(gv), (SV*)gv, 0, name, len); |
93a17b20 |
804 | break; |
805 | |
806 | case '\014': |
463ee0b2 |
807 | if (len > 1) |
808 | break; |
93a17b20 |
809 | sv_setpv(GvSV(gv),"\f"); |
3280af22 |
810 | PL_formfeed = GvSV(gv); |
93a17b20 |
811 | break; |
812 | case ';': |
463ee0b2 |
813 | if (len > 1) |
814 | break; |
93a17b20 |
815 | sv_setpv(GvSV(gv),"\034"); |
816 | break; |
463ee0b2 |
817 | case ']': |
818 | if (len == 1) { |
f86702cc |
819 | SV *sv = GvSV(gv); |
07f14f54 |
820 | (void)SvUPGRADE(sv, SVt_PVNV); |
3280af22 |
821 | sv_setpv(sv, PL_patchlevel); |
f86702cc |
822 | (void)sv_2nv(sv); |
823 | SvREADONLY_on(sv); |
93a17b20 |
824 | } |
825 | break; |
79072805 |
826 | } |
93a17b20 |
827 | return gv; |
79072805 |
828 | } |
829 | |
830 | void |
8ac85365 |
831 | gv_fullname3(SV *sv, GV *gv, char *prefix) |
79072805 |
832 | { |
833 | HV *hv = GvSTASH(gv); |
f967eb5f |
834 | if (!hv) { |
835 | SvOK_off(sv); |
79072805 |
836 | return; |
f967eb5f |
837 | } |
838 | sv_setpv(sv, prefix ? prefix : ""); |
79072805 |
839 | sv_catpv(sv,HvNAME(hv)); |
463ee0b2 |
840 | sv_catpvn(sv,"::", 2); |
79072805 |
841 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); |
842 | } |
843 | |
844 | void |
8ac85365 |
845 | gv_efullname3(SV *sv, GV *gv, char *prefix) |
79072805 |
846 | { |
f967eb5f |
847 | GV *egv = GvEGV(gv); |
748a9306 |
848 | if (!egv) |
849 | egv = gv; |
f6aff53a |
850 | gv_fullname3(sv, egv, prefix); |
851 | } |
852 | |
853 | /* XXX compatibility with versions <= 5.003. */ |
854 | void |
8ac85365 |
855 | gv_fullname(SV *sv, GV *gv) |
f6aff53a |
856 | { |
857 | gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : ""); |
858 | } |
859 | |
860 | /* XXX compatibility with versions <= 5.003. */ |
861 | void |
8ac85365 |
862 | gv_efullname(SV *sv, GV *gv) |
f6aff53a |
863 | { |
864 | gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : ""); |
79072805 |
865 | } |
866 | |
867 | IO * |
8ac85365 |
868 | newIO(void) |
79072805 |
869 | { |
11343788 |
870 | dTHR; |
79072805 |
871 | IO *io; |
8990e307 |
872 | GV *iogv; |
873 | |
874 | io = (IO*)NEWSV(0,0); |
a0d0e21e |
875 | sv_upgrade((SV *)io,SVt_PVIO); |
8990e307 |
876 | SvREFCNT(io) = 1; |
877 | SvOBJECT_on(io); |
c9de509e |
878 | iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV); |
5f2d631d |
879 | /* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */ |
880 | if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv)))) |
c9de509e |
881 | iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV); |
8990e307 |
882 | SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv)); |
79072805 |
883 | return io; |
884 | } |
885 | |
886 | void |
8ac85365 |
887 | gv_check(HV *stash) |
79072805 |
888 | { |
11343788 |
889 | dTHR; |
79072805 |
890 | register HE *entry; |
891 | register I32 i; |
892 | register GV *gv; |
463ee0b2 |
893 | HV *hv; |
a0d0e21e |
894 | GV *filegv; |
463ee0b2 |
895 | |
8990e307 |
896 | if (!HvARRAY(stash)) |
897 | return; |
a0d0e21e |
898 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
dc437b57 |
899 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
900 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && |
901 | (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv)) |
a0d0e21e |
902 | { |
3280af22 |
903 | if (hv != PL_defstash) |
a0d0e21e |
904 | gv_check(hv); /* nested package */ |
905 | } |
dc437b57 |
906 | else if (isALPHA(*HeKEY(entry))) { |
907 | gv = (GV*)HeVAL(entry); |
55d729e4 |
908 | if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv)) |
463ee0b2 |
909 | continue; |
3280af22 |
910 | PL_curcop->cop_line = GvLINE(gv); |
a0d0e21e |
911 | filegv = GvFILEGV(gv); |
3280af22 |
912 | PL_curcop->cop_filegv = filegv; |
a5f75d66 |
913 | if (filegv && GvMULTI(filegv)) /* Filename began with slash */ |
8990e307 |
914 | continue; |
599cee73 |
915 | warner(WARN_ONCE, |
916 | "Name \"%s::%s\" used only once: possible typo", |
a0d0e21e |
917 | HvNAME(stash), GvNAME(gv)); |
463ee0b2 |
918 | } |
79072805 |
919 | } |
920 | } |
921 | } |
922 | |
923 | GV * |
8ac85365 |
924 | newGVgen(char *pack) |
79072805 |
925 | { |
3280af22 |
926 | return gv_fetchpv(form("%s::_GEN_%ld", pack, (long)PL_gensym++), |
46fc3d4c |
927 | TRUE, SVt_PVGV); |
79072805 |
928 | } |
929 | |
930 | /* hopefully this is only called on local symbol table entries */ |
931 | |
932 | GP* |
8ac85365 |
933 | gp_ref(GP *gp) |
79072805 |
934 | { |
935 | gp->gp_refcnt++; |
44a8e56a |
936 | if (gp->gp_cv) { |
937 | if (gp->gp_cvgen) { |
938 | /* multi-named GPs cannot be used for method cache */ |
939 | SvREFCNT_dec(gp->gp_cv); |
940 | gp->gp_cv = Nullcv; |
941 | gp->gp_cvgen = 0; |
942 | } |
943 | else { |
944 | /* Adding a new name to a subroutine invalidates method cache */ |
3280af22 |
945 | PL_sub_generation++; |
44a8e56a |
946 | } |
947 | } |
79072805 |
948 | return gp; |
79072805 |
949 | } |
950 | |
951 | void |
8ac85365 |
952 | gp_free(GV *gv) |
79072805 |
953 | { |
79072805 |
954 | GP* gp; |
377b8fbc |
955 | CV* cv; |
79072805 |
956 | |
957 | if (!gv || !(gp = GvGP(gv))) |
958 | return; |
959 | if (gp->gp_refcnt == 0) { |
960 | warn("Attempt to free unreferenced glob pointers"); |
961 | return; |
962 | } |
44a8e56a |
963 | if (gp->gp_cv) { |
964 | /* Deleting the name of a subroutine invalidates method cache */ |
3280af22 |
965 | PL_sub_generation++; |
44a8e56a |
966 | } |
748a9306 |
967 | if (--gp->gp_refcnt > 0) { |
968 | if (gp->gp_egv == gv) |
969 | gp->gp_egv = 0; |
79072805 |
970 | return; |
748a9306 |
971 | } |
79072805 |
972 | |
8990e307 |
973 | SvREFCNT_dec(gp->gp_sv); |
974 | SvREFCNT_dec(gp->gp_av); |
975 | SvREFCNT_dec(gp->gp_hv); |
377b8fbc |
976 | SvREFCNT_dec(gp->gp_io); |
a6006777 |
977 | SvREFCNT_dec(gp->gp_cv); |
748a9306 |
978 | SvREFCNT_dec(gp->gp_form); |
979 | |
79072805 |
980 | Safefree(gp); |
981 | GvGP(gv) = 0; |
982 | } |
983 | |
984 | #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286)) |
985 | #define MICROPORT |
986 | #endif |
987 | |
988 | #ifdef MICROPORT /* Microport 2.4 hack */ |
989 | AV *GvAVn(gv) |
990 | register GV *gv; |
991 | { |
992 | if (GvGP(gv)->gp_av) |
993 | return GvGP(gv)->gp_av; |
994 | else |
995 | return GvGP(gv_AVadd(gv))->gp_av; |
996 | } |
997 | |
998 | HV *GvHVn(gv) |
999 | register GV *gv; |
1000 | { |
1001 | if (GvGP(gv)->gp_hv) |
1002 | return GvGP(gv)->gp_hv; |
1003 | else |
1004 | return GvGP(gv_HVadd(gv))->gp_hv; |
1005 | } |
1006 | #endif /* Microport 2.4 hack */ |
a0d0e21e |
1007 | |
1008 | #ifdef OVERLOAD |
1009 | /* Updates and caches the CV's */ |
1010 | |
1011 | bool |
8ac85365 |
1012 | Gv_AMupdate(HV *stash) |
a0d0e21e |
1013 | { |
11343788 |
1014 | dTHR; |
a0d0e21e |
1015 | GV** gvp; |
1016 | HV* hv; |
1017 | GV* gv; |
1018 | CV* cv; |
1019 | MAGIC* mg=mg_find((SV*)stash,'c'); |
8ac85365 |
1020 | AMT *amtp = (mg) ? (AMT*)mg->mg_ptr: (AMT *) NULL; |
a6006777 |
1021 | AMT amt; |
2d8e6c8d |
1022 | STRLEN n_a; |
a0d0e21e |
1023 | |
3280af22 |
1024 | if (mg && amtp->was_ok_am == PL_amagic_generation |
1025 | && amtp->was_ok_sub == PL_sub_generation) |
a6006777 |
1026 | return AMT_AMAGIC(amtp); |
1027 | if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */ |
748a9306 |
1028 | int i; |
a6006777 |
1029 | for (i=1; i<NofAMmeth; i++) { |
748a9306 |
1030 | if (amtp->table[i]) { |
1031 | SvREFCNT_dec(amtp->table[i]); |
1032 | } |
1033 | } |
1034 | } |
a0d0e21e |
1035 | sv_unmagic((SV*)stash, 'c'); |
1036 | |
1037 | DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) ); |
1038 | |
3280af22 |
1039 | amt.was_ok_am = PL_amagic_generation; |
1040 | amt.was_ok_sub = PL_sub_generation; |
a6006777 |
1041 | amt.fallback = AMGfallNO; |
1042 | amt.flags = 0; |
1043 | |
1044 | #ifdef OVERLOAD_VIA_HASH |
1045 | gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */ |
3280af22 |
1046 | if (gvp && ((gv = *gvp) != (GV*)&PL_sv_undef && (hv = GvHV(gv)))) { |
a0d0e21e |
1047 | int filled=0; |
1048 | int i; |
1049 | char *cp; |
a0d0e21e |
1050 | SV* sv; |
1051 | SV** svp; |
a0d0e21e |
1052 | |
22c35a8c |
1053 | /* Work with "fallback" key, which we assume to be first in PL_AMG_names */ |
a0d0e21e |
1054 | |
22c35a8c |
1055 | if (( cp = (char *)PL_AMG_names[0] ) && |
a6006777 |
1056 | (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) { |
a0d0e21e |
1057 | if (SvTRUE(sv)) amt.fallback=AMGfallYES; |
1058 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; |
1059 | } |
a6006777 |
1060 | for (i = 1; i < NofAMmeth; i++) { |
1061 | cv = 0; |
22c35a8c |
1062 | cp = (char *)PL_AMG_names[i]; |
a6006777 |
1063 | |
1064 | svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE); |
3280af22 |
1065 | if (svp && ((sv = *svp) != &PL_sv_undef)) { |
a0d0e21e |
1066 | switch (SvTYPE(sv)) { |
1067 | default: |
1068 | if (!SvROK(sv)) { |
1069 | if (!SvOK(sv)) break; |
2d8e6c8d |
1070 | gv = gv_fetchmethod(stash, SvPV(sv, n_a)); |
a0d0e21e |
1071 | if (gv) cv = GvCV(gv); |
1072 | break; |
1073 | } |
1074 | cv = (CV*)SvRV(sv); |
1075 | if (SvTYPE(cv) == SVt_PVCV) |
1076 | break; |
1077 | /* FALL THROUGH */ |
1078 | case SVt_PVHV: |
1079 | case SVt_PVAV: |
a6006777 |
1080 | croak("Not a subroutine reference in overload table"); |
a0d0e21e |
1081 | return FALSE; |
1082 | case SVt_PVCV: |
8ebc5c01 |
1083 | cv = (CV*)sv; |
1084 | break; |
a0d0e21e |
1085 | case SVt_PVGV: |
8ebc5c01 |
1086 | if (!(cv = GvCVu((GV*)sv))) |
1087 | cv = sv_2cv(sv, &stash, &gv, TRUE); |
1088 | break; |
a0d0e21e |
1089 | } |
1090 | if (cv) filled=1; |
1091 | else { |
a6006777 |
1092 | croak("Method for operation %s not found in package %.256s during blessing\n", |
a0d0e21e |
1093 | cp,HvNAME(stash)); |
1094 | return FALSE; |
1095 | } |
1096 | } |
a6006777 |
1097 | #else |
1098 | { |
1099 | int filled = 0; |
1100 | int i; |
9607fc9c |
1101 | const char *cp; |
a6006777 |
1102 | SV* sv = NULL; |
1103 | SV** svp; |
1104 | |
22c35a8c |
1105 | /* Work with "fallback" key, which we assume to be first in PL_AMG_names */ |
a6006777 |
1106 | |
22c35a8c |
1107 | if ( cp = PL_AMG_names[0] ) { |
a6006777 |
1108 | /* Try to find via inheritance. */ |
774d564b |
1109 | gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */ |
a6006777 |
1110 | if (gv) sv = GvSV(gv); |
1111 | |
774d564b |
1112 | if (!gv) goto no_table; |
a6006777 |
1113 | else if (SvTRUE(sv)) amt.fallback=AMGfallYES; |
1114 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; |
1115 | } |
1116 | |
1117 | for (i = 1; i < NofAMmeth; i++) { |
22c35a8c |
1118 | SV *cookie = sv_2mortal(newSVpvf("(%s", cp = PL_AMG_names[i])); |
44a8e56a |
1119 | DEBUG_o( deb("Checking overloading of `%s' in package `%.256s'\n", |
1120 | cp, HvNAME(stash)) ); |
46fc3d4c |
1121 | /* don't fill the cache while looking up! */ |
1122 | gv = gv_fetchmeth(stash, SvPVX(cookie), SvCUR(cookie), -1); |
1123 | cv = 0; |
44a8e56a |
1124 | if(gv && (cv = GvCV(gv))) { |
44a8e56a |
1125 | if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil") |
1126 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) { |
1127 | /* GvSV contains the name of the method. */ |
1128 | GV *ngv; |
1129 | |
1130 | DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n", |
2d8e6c8d |
1131 | SvPV(GvSV(gv), n_a), cp, HvNAME(stash)) ); |
dc848c6f |
1132 | if (!SvPOK(GvSV(gv)) |
1133 | || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)), |
1134 | FALSE))) |
1135 | { |
44a8e56a |
1136 | /* Can be an import stub (created by `can'). */ |
1137 | if (GvCVGEN(gv)) { |
1138 | croak("Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'", |
1139 | (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), |
1140 | cp, HvNAME(stash)); |
1141 | } else |
1142 | croak("Cannot resolve method `%.256s' overloading `%s' in package `%.256s'", |
1143 | (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), |
1144 | cp, HvNAME(stash)); |
1145 | } |
dc848c6f |
1146 | cv = GvCV(gv = ngv); |
44a8e56a |
1147 | } |
1148 | DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n", |
1149 | cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))), |
1150 | GvNAME(CvGV(cv))) ); |
1151 | filled = 1; |
1152 | } |
a6006777 |
1153 | #endif |
1154 | amt.table[i]=(CV*)SvREFCNT_inc(cv); |
a0d0e21e |
1155 | } |
a0d0e21e |
1156 | if (filled) { |
a6006777 |
1157 | AMT_AMAGIC_on(&amt); |
1158 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT)); |
a0d0e21e |
1159 | return TRUE; |
1160 | } |
1161 | } |
a6006777 |
1162 | /* Here we have no table: */ |
774d564b |
1163 | no_table: |
a6006777 |
1164 | AMT_AMAGIC_off(&amt); |
1165 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS)); |
a0d0e21e |
1166 | return FALSE; |
1167 | } |
1168 | |
a0d0e21e |
1169 | SV* |
8ac85365 |
1170 | amagic_call(SV *left, SV *right, int method, int flags) |
a0d0e21e |
1171 | { |
11343788 |
1172 | dTHR; |
a0d0e21e |
1173 | MAGIC *mg; |
1174 | CV *cv; |
1175 | CV **cvp=NULL, **ocvp=NULL; |
1176 | AMT *amtp, *oamtp; |
1177 | int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0; |
ee239bfe |
1178 | int postpr = 0, force_cpy = 0, assignshift = assign ? 1 : 0; |
a0d0e21e |
1179 | HV* stash; |
1180 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) |
1181 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c')) |
a6006777 |
1182 | && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1183 | ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table |
8ac85365 |
1184 | : (CV **) NULL)) |
748a9306 |
1185 | && ((cv = cvp[off=method+assignshift]) |
1186 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to |
1187 | * usual method */ |
1188 | (fl = 1, cv = cvp[off=method])))) { |
a0d0e21e |
1189 | lr = -1; /* Call method for left argument */ |
1190 | } else { |
1191 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { |
1192 | int logic; |
1193 | |
1194 | /* look for substituted methods */ |
ee239bfe |
1195 | /* In all the covered cases we should be called with assign==0. */ |
a0d0e21e |
1196 | switch (method) { |
1197 | case inc_amg: |
ee239bfe |
1198 | force_cpy = 1; |
1199 | if ((cv = cvp[off=add_ass_amg]) |
1200 | || ((cv = cvp[off = add_amg]) && (force_cpy = 0, postpr = 1))) { |
3280af22 |
1201 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e |
1202 | } |
1203 | break; |
1204 | case dec_amg: |
ee239bfe |
1205 | force_cpy = 1; |
1206 | if ((cv = cvp[off = subtr_ass_amg]) |
1207 | || ((cv = cvp[off = subtr_amg]) && (force_cpy = 0, postpr=1))) { |
3280af22 |
1208 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e |
1209 | } |
1210 | break; |
1211 | case bool__amg: |
1212 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); |
1213 | break; |
1214 | case numer_amg: |
1215 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); |
1216 | break; |
1217 | case string_amg: |
1218 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); |
1219 | break; |
dc437b57 |
1220 | case not_amg: |
1221 | (void)((cv = cvp[off=bool__amg]) |
1222 | || (cv = cvp[off=numer_amg]) |
1223 | || (cv = cvp[off=string_amg])); |
1224 | postpr = 1; |
1225 | break; |
748a9306 |
1226 | case copy_amg: |
1227 | { |
76e3520e |
1228 | /* |
1229 | * SV* ref causes confusion with the interpreter variable of |
1230 | * the same name |
1231 | */ |
1232 | SV* tmpRef=SvRV(left); |
1233 | if (!SvROK(tmpRef) && SvTYPE(tmpRef) <= SVt_PVMG) { |
fc36a67e |
1234 | /* |
1235 | * Just to be extra cautious. Maybe in some |
1236 | * additional cases sv_setsv is safe, too. |
1237 | */ |
76e3520e |
1238 | SV* newref = newSVsv(tmpRef); |
748a9306 |
1239 | SvOBJECT_on(newref); |
76e3520e |
1240 | SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(tmpRef)); |
748a9306 |
1241 | return newref; |
1242 | } |
1243 | } |
1244 | break; |
a0d0e21e |
1245 | case abs_amg: |
748a9306 |
1246 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e |
1247 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
748a9306 |
1248 | SV* nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e |
1249 | if (off1==lt_amg) { |
748a9306 |
1250 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e |
1251 | lt_amg,AMGf_noright); |
1252 | logic = SvTRUE(lessp); |
1253 | } else { |
748a9306 |
1254 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e |
1255 | ncmp_amg,AMGf_noright); |
1256 | logic = (SvNV(lessp) < 0); |
1257 | } |
1258 | if (logic) { |
1259 | if (off==subtr_amg) { |
1260 | right = left; |
748a9306 |
1261 | left = nullsv; |
a0d0e21e |
1262 | lr = 1; |
1263 | } |
1264 | } else { |
1265 | return left; |
1266 | } |
1267 | } |
1268 | break; |
1269 | case neg_amg: |
1270 | if (cv = cvp[off=subtr_amg]) { |
1271 | right = left; |
1272 | left = sv_2mortal(newSViv(0)); |
1273 | lr = 1; |
1274 | } |
1275 | break; |
f5284f61 |
1276 | case iter_amg: /* XXXX Eventually should do to_gv. */ |
1277 | case to_sv_amg: |
1278 | case to_av_amg: |
1279 | case to_hv_amg: |
1280 | case to_gv_amg: |
1281 | case to_cv_amg: |
1282 | /* FAIL safe */ |
1283 | return NULL; /* Delegate operation to standard mechanisms. */ |
1284 | break; |
a0d0e21e |
1285 | default: |
1286 | goto not_found; |
1287 | } |
1288 | if (!cv) goto not_found; |
1289 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) |
1290 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c')) |
a6006777 |
1291 | && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1292 | ? (amtp = (AMT*)mg->mg_ptr)->table |
8ac85365 |
1293 | : (CV **) NULL)) |
a0d0e21e |
1294 | && (cv = cvp[off=method])) { /* Method for right |
1295 | * argument found */ |
1296 | lr=1; |
748a9306 |
1297 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
4633a7c4 |
1298 | && (cvp=ocvp) && (lr = -1)) |
a0d0e21e |
1299 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
1300 | && !(flags & AMGf_unary)) { |
1301 | /* We look for substitution for |
1302 | * comparison operations and |
fc36a67e |
1303 | * concatenation */ |
a0d0e21e |
1304 | if (method==concat_amg || method==concat_ass_amg |
1305 | || method==repeat_amg || method==repeat_ass_amg) { |
1306 | return NULL; /* Delegate operation to string conversion */ |
1307 | } |
1308 | off = -1; |
1309 | switch (method) { |
1310 | case lt_amg: |
1311 | case le_amg: |
1312 | case gt_amg: |
1313 | case ge_amg: |
1314 | case eq_amg: |
1315 | case ne_amg: |
1316 | postpr = 1; off=ncmp_amg; break; |
1317 | case slt_amg: |
1318 | case sle_amg: |
1319 | case sgt_amg: |
1320 | case sge_amg: |
1321 | case seq_amg: |
1322 | case sne_amg: |
1323 | postpr = 1; off=scmp_amg; break; |
1324 | } |
1325 | if (off != -1) cv = cvp[off]; |
1326 | if (!cv) { |
1327 | goto not_found; |
1328 | } |
1329 | } else { |
a6006777 |
1330 | not_found: /* No method found, either report or croak */ |
a0d0e21e |
1331 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
1332 | notfound = 1; lr = -1; |
1333 | } else if (cvp && (cv=cvp[nomethod_amg])) { |
1334 | notfound = 1; lr = 1; |
1335 | } else { |
46fc3d4c |
1336 | SV *msg; |
774d564b |
1337 | if (off==-1) off=method; |
46fc3d4c |
1338 | msg = sv_2mortal(newSVpvf( |
1339 | "Operation `%s': no method found,%sargument %s%s%s%s", |
22c35a8c |
1340 | PL_AMG_names[method + assignshift], |
e7ea3e70 |
1341 | (flags & AMGf_unary ? " " : "\n\tleft "), |
a0d0e21e |
1342 | SvAMAGIC(left)? |
1343 | "in overloaded package ": |
1344 | "has no overloaded magic", |
1345 | SvAMAGIC(left)? |
1346 | HvNAME(SvSTASH(SvRV(left))): |
1347 | "", |
1348 | SvAMAGIC(right)? |
e7ea3e70 |
1349 | ",\n\tright argument in overloaded package ": |
1350 | (flags & AMGf_unary |
1351 | ? "" |
1352 | : ",\n\tright argument has no overloaded magic"), |
a0d0e21e |
1353 | SvAMAGIC(right)? |
1354 | HvNAME(SvSTASH(SvRV(right))): |
46fc3d4c |
1355 | "")); |
a0d0e21e |
1356 | if (amtp && amtp->fallback >= AMGfallYES) { |
46fc3d4c |
1357 | DEBUG_o( deb("%s", SvPVX(msg)) ); |
a0d0e21e |
1358 | } else { |
fc36a67e |
1359 | croak("%_", msg); |
a0d0e21e |
1360 | } |
1361 | return NULL; |
1362 | } |
ee239bfe |
1363 | force_cpy = force_cpy || assign; |
a0d0e21e |
1364 | } |
1365 | } |
1366 | if (!notfound) { |
774d564b |
1367 | DEBUG_o( deb( |
46fc3d4c |
1368 | "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n", |
22c35a8c |
1369 | PL_AMG_names[off], |
748a9306 |
1370 | method+assignshift==off? "" : |
1371 | " (initially `", |
1372 | method+assignshift==off? "" : |
22c35a8c |
1373 | PL_AMG_names[method+assignshift], |
748a9306 |
1374 | method+assignshift==off? "" : "')", |
1375 | flags & AMGf_unary? "" : |
1376 | lr==1 ? " for right argument": " for left argument", |
1377 | flags & AMGf_unary? " for argument" : "", |
a0d0e21e |
1378 | HvNAME(stash), |
1379 | fl? ",\n\tassignment variant used": "") ); |
ee239bfe |
1380 | } |
748a9306 |
1381 | /* Since we use shallow copy during assignment, we need |
1382 | * to dublicate the contents, probably calling user-supplied |
1383 | * version of copy operator |
1384 | */ |
ee239bfe |
1385 | /* We need to copy in following cases: |
1386 | * a) Assignment form was called. |
1387 | * assignshift==1, assign==T, method + 1 == off |
1388 | * b) Increment or decrement, called directly. |
1389 | * assignshift==0, assign==0, method + 0 == off |
1390 | * c) Increment or decrement, translated to assignment add/subtr. |
1391 | * assignshift==0, assign==T, |
1392 | * force_cpy == T |
1393 | * d) Increment or decrement, translated to nomethod. |
1394 | * assignshift==0, assign==0, |
1395 | * force_cpy == T |
1396 | * e) Assignment form translated to nomethod. |
1397 | * assignshift==1, assign==T, method + 1 != off |
1398 | * force_cpy == T |
1399 | */ |
1400 | /* off is method, method+assignshift, or a result of opcode substitution. |
1401 | * In the latter case assignshift==0, so only notfound case is important. |
1402 | */ |
1403 | if (( (method + assignshift == off) |
1404 | && (assign || (method == inc_amg) || (method == dec_amg))) |
1405 | || force_cpy) |
1406 | RvDEEPCP(left); |
a0d0e21e |
1407 | { |
1408 | dSP; |
1409 | BINOP myop; |
1410 | SV* res; |
54310121 |
1411 | bool oldcatch = CATCH_GET; |
a0d0e21e |
1412 | |
54310121 |
1413 | CATCH_SET(TRUE); |
a0d0e21e |
1414 | Zero(&myop, 1, BINOP); |
1415 | myop.op_last = (OP *) &myop; |
1416 | myop.op_next = Nullop; |
54310121 |
1417 | myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED; |
a0d0e21e |
1418 | |
e788e7d3 |
1419 | PUSHSTACKi(PERLSI_OVERLOAD); |
a0d0e21e |
1420 | ENTER; |
462e5cf6 |
1421 | SAVEOP(); |
533c011a |
1422 | PL_op = (OP *) &myop; |
3280af22 |
1423 | if (PERLDB_SUB && PL_curstash != PL_debstash) |
533c011a |
1424 | PL_op->op_private |= OPpENTERSUB_DB; |
a0d0e21e |
1425 | PUTBACK; |
11343788 |
1426 | pp_pushmark(ARGS); |
a0d0e21e |
1427 | |
924508f0 |
1428 | EXTEND(SP, notfound + 5); |
a0d0e21e |
1429 | PUSHs(lr>0? right: left); |
1430 | PUSHs(lr>0? left: right); |
3280af22 |
1431 | PUSHs( lr > 0 ? &PL_sv_yes : ( assign ? &PL_sv_undef : &PL_sv_no )); |
a0d0e21e |
1432 | if (notfound) { |
22c35a8c |
1433 | PUSHs( sv_2mortal(newSVpv((char *)PL_AMG_names[method + assignshift],0))); |
a0d0e21e |
1434 | } |
1435 | PUSHs((SV*)cv); |
1436 | PUTBACK; |
1437 | |
533c011a |
1438 | if (PL_op = pp_entersub(ARGS)) |
76e3520e |
1439 | CALLRUNOPS(); |
a0d0e21e |
1440 | LEAVE; |
1441 | SPAGAIN; |
1442 | |
1443 | res=POPs; |
ebafeae7 |
1444 | PUTBACK; |
d3acc0f7 |
1445 | POPSTACK; |
54310121 |
1446 | CATCH_SET(oldcatch); |
a0d0e21e |
1447 | |
a0d0e21e |
1448 | if (postpr) { |
1449 | int ans; |
1450 | switch (method) { |
1451 | case le_amg: |
1452 | case sle_amg: |
1453 | ans=SvIV(res)<=0; break; |
1454 | case lt_amg: |
1455 | case slt_amg: |
1456 | ans=SvIV(res)<0; break; |
1457 | case ge_amg: |
1458 | case sge_amg: |
1459 | ans=SvIV(res)>=0; break; |
1460 | case gt_amg: |
1461 | case sgt_amg: |
1462 | ans=SvIV(res)>0; break; |
1463 | case eq_amg: |
1464 | case seq_amg: |
1465 | ans=SvIV(res)==0; break; |
1466 | case ne_amg: |
1467 | case sne_amg: |
1468 | ans=SvIV(res)!=0; break; |
1469 | case inc_amg: |
1470 | case dec_amg: |
bbce6d69 |
1471 | SvSetSV(left,res); return left; |
dc437b57 |
1472 | case not_amg: |
44a8e56a |
1473 | ans=!SvOK(res); break; |
a0d0e21e |
1474 | } |
54310121 |
1475 | return boolSV(ans); |
748a9306 |
1476 | } else if (method==copy_amg) { |
1477 | if (!SvROK(res)) { |
a6006777 |
1478 | croak("Copy method did not return a reference"); |
748a9306 |
1479 | } |
1480 | return SvREFCNT_inc(SvRV(res)); |
a0d0e21e |
1481 | } else { |
1482 | return res; |
1483 | } |
1484 | } |
1485 | } |
1486 | #endif /* OVERLOAD */ |
4e35701f |
1487 | |