Commit | Line | Data |
a0d0e21e |
1 | /* gv.c |
79072805 |
2 | * |
a0d0e21e |
3 | * Copyright (c) 1991-1994, 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 | |
71be2cbc |
22 | EXT char rcsid[]; |
93a17b20 |
23 | |
79072805 |
24 | GV * |
25 | gv_AVadd(gv) |
26 | register GV *gv; |
27 | { |
a0d0e21e |
28 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
29 | croak("Bad symbol for array"); |
79072805 |
30 | if (!GvAV(gv)) |
31 | GvAV(gv) = newAV(); |
32 | return gv; |
33 | } |
34 | |
35 | GV * |
36 | gv_HVadd(gv) |
37 | register GV *gv; |
38 | { |
a0d0e21e |
39 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
40 | croak("Bad symbol for hash"); |
79072805 |
41 | if (!GvHV(gv)) |
463ee0b2 |
42 | GvHV(gv) = newHV(); |
79072805 |
43 | return gv; |
44 | } |
45 | |
46 | GV * |
a0d0e21e |
47 | gv_IOadd(gv) |
48 | register GV *gv; |
49 | { |
50 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
51 | croak("Bad symbol for filehandle"); |
52 | if (!GvIOp(gv)) |
53 | GvIOp(gv) = newIO(); |
54 | return gv; |
55 | } |
56 | |
57 | GV * |
79072805 |
58 | gv_fetchfile(name) |
59 | char *name; |
60 | { |
61 | char tmpbuf[1200]; |
62 | GV *gv; |
63 | |
8990e307 |
64 | sprintf(tmpbuf,"::_<%s", name); |
85e6fe83 |
65 | gv = gv_fetchpv(tmpbuf, TRUE, SVt_PVGV); |
79072805 |
66 | sv_setpv(GvSV(gv), name); |
a0d0e21e |
67 | if (*name == '/' && (instr(name,"/lib/") || instr(name,".pm"))) |
a5f75d66 |
68 | GvMULTI_on(gv); |
79072805 |
69 | if (perldb) |
93a17b20 |
70 | hv_magic(GvHVn(gv_AVadd(gv)), gv, 'L'); |
79072805 |
71 | return gv; |
72 | } |
73 | |
463ee0b2 |
74 | void |
75 | gv_init(gv, stash, name, len, multi) |
76 | GV *gv; |
77 | HV *stash; |
78 | char *name; |
79 | STRLEN len; |
80 | int multi; |
81 | { |
82 | register GP *gp; |
83 | |
dc437b57 |
84 | sv_upgrade((SV*)gv, SVt_PVGV); |
463ee0b2 |
85 | if (SvLEN(gv)) |
86 | Safefree(SvPVX(gv)); |
87 | Newz(602,gp, 1, GP); |
8990e307 |
88 | GvGP(gv) = gp_ref(gp); |
463ee0b2 |
89 | GvREFCNT(gv) = 1; |
90 | GvSV(gv) = NEWSV(72,0); |
91 | GvLINE(gv) = curcop->cop_line; |
8990e307 |
92 | GvFILEGV(gv) = curcop->cop_filegv; |
463ee0b2 |
93 | GvEGV(gv) = gv; |
94 | sv_magic((SV*)gv, (SV*)gv, '*', name, len); |
95 | GvSTASH(gv) = stash; |
a0d0e21e |
96 | GvNAME(gv) = savepvn(name, len); |
463ee0b2 |
97 | GvNAMELEN(gv) = len; |
98 | if (multi) |
a5f75d66 |
99 | GvMULTI_on(gv); |
463ee0b2 |
100 | } |
101 | |
a0d0e21e |
102 | static void |
103 | gv_init_sv(gv, sv_type) |
104 | GV* gv; |
105 | I32 sv_type; |
106 | { |
107 | switch (sv_type) { |
108 | case SVt_PVIO: |
109 | (void)GvIOn(gv); |
110 | break; |
111 | case SVt_PVAV: |
112 | (void)GvAVn(gv); |
113 | break; |
114 | case SVt_PVHV: |
115 | (void)GvHVn(gv); |
116 | break; |
117 | } |
118 | } |
119 | |
79072805 |
120 | GV * |
a0d0e21e |
121 | gv_fetchmeth(stash, name, len, level) |
79072805 |
122 | HV* stash; |
123 | char* name; |
463ee0b2 |
124 | STRLEN len; |
a0d0e21e |
125 | I32 level; |
79072805 |
126 | { |
127 | AV* av; |
463ee0b2 |
128 | GV* topgv; |
79072805 |
129 | GV* gv; |
463ee0b2 |
130 | GV** gvp; |
a0d0e21e |
131 | HV* lastchance; |
748a9306 |
132 | CV* cv; |
a0d0e21e |
133 | |
134 | if (!stash) |
135 | return 0; |
136 | if (level > 100) |
137 | croak("Recursive inheritance detected"); |
463ee0b2 |
138 | |
139 | gvp = (GV**)hv_fetch(stash, name, len, TRUE); |
140 | |
141 | DEBUG_o( deb("Looking for method %s in package %s\n",name,HvNAME(stash)) ); |
142 | topgv = *gvp; |
143 | if (SvTYPE(topgv) != SVt_PVGV) |
144 | gv_init(topgv, stash, name, len, TRUE); |
145 | |
7a4c00b4 |
146 | if (cv = GvCV(topgv)) { |
147 | if (CvXSUB(cv) || CvROOT(cv) || CvGV(cv)) { /* Not deleted, possibly autoloaded. */ |
148 | if (GvCVGEN(topgv) >= sub_generation) |
149 | return topgv; /* valid cached inheritance */ |
150 | if (!GvCVGEN(topgv)) { /* not an inheritance cache */ |
151 | return topgv; |
152 | } |
748a9306 |
153 | } |
7a4c00b4 |
154 | /* stale cached entry, just junk it */ |
155 | SvREFCNT_dec(cv); |
156 | GvCV(topgv) = cv = 0; |
157 | GvCVGEN(topgv) = 0; |
463ee0b2 |
158 | } |
7a4c00b4 |
159 | /* Now cv = 0, and there is no cv in topgv. */ |
79072805 |
160 | |
161 | gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); |
162 | if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) { |
163 | SV** svp = AvARRAY(av); |
164 | I32 items = AvFILL(av) + 1; |
165 | while (items--) { |
79072805 |
166 | SV* sv = *svp++; |
a0d0e21e |
167 | HV* basestash = gv_stashsv(sv, FALSE); |
9bbf4081 |
168 | if (!basestash) { |
79072805 |
169 | if (dowarn) |
a0d0e21e |
170 | warn("Can't locate package %s for @%s::ISA", |
463ee0b2 |
171 | SvPVX(sv), HvNAME(stash)); |
79072805 |
172 | continue; |
173 | } |
a0d0e21e |
174 | gv = gv_fetchmeth(basestash, name, len, level + 1); |
463ee0b2 |
175 | if (gv) { |
176 | GvCV(topgv) = GvCV(gv); /* cache the CV */ |
177 | GvCVGEN(topgv) = sub_generation; /* valid for now */ |
7a4c00b4 |
178 | SvREFCNT_inc(GvCV(gv)); |
79072805 |
179 | return gv; |
463ee0b2 |
180 | } |
79072805 |
181 | } |
182 | } |
a0d0e21e |
183 | |
184 | if (!level) { |
dc437b57 |
185 | if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) { |
a0d0e21e |
186 | if (gv = gv_fetchmeth(lastchance, name, len, level + 1)) { |
187 | GvCV(topgv) = GvCV(gv); /* cache the CV */ |
188 | GvCVGEN(topgv) = sub_generation; /* valid for now */ |
7a4c00b4 |
189 | SvREFCNT_inc(GvCV(gv)); |
a0d0e21e |
190 | return gv; |
191 | } |
192 | } |
193 | } |
194 | |
79072805 |
195 | return 0; |
196 | } |
197 | |
198 | GV * |
463ee0b2 |
199 | gv_fetchmethod(stash, name) |
200 | HV* stash; |
201 | char* name; |
202 | { |
203 | register char *nend; |
a0d0e21e |
204 | char *nsplit = 0; |
205 | GV* gv; |
463ee0b2 |
206 | |
207 | for (nend = name; *nend; nend++) { |
a0d0e21e |
208 | if (*nend == ':' || *nend == '\'') |
209 | nsplit = nend; |
210 | } |
211 | if (nsplit) { |
212 | char ch; |
213 | char *origname = name; |
214 | name = nsplit + 1; |
215 | ch = *nsplit; |
216 | if (*nsplit == ':') |
217 | --nsplit; |
218 | *nsplit = '\0'; |
4633a7c4 |
219 | if (strEQ(origname,"SUPER")) { |
220 | /* Degenerate case ->SUPER::method should really lookup in original stash */ |
37120919 |
221 | SV *tmpstr = sv_2mortal(newSVpv(HvNAME(curcop->cop_stash),0)); |
4633a7c4 |
222 | sv_catpvn(tmpstr, "::SUPER", 7); |
dc437b57 |
223 | stash = gv_stashpvn(SvPVX(tmpstr),SvCUR(tmpstr),TRUE); |
4633a7c4 |
224 | *nsplit = ch; |
225 | DEBUG_o( deb("Treating %s as %s::%s\n",origname,HvNAME(stash),name) ); |
226 | } else { |
dc437b57 |
227 | stash = gv_stashpvn(origname, nsplit - origname, TRUE); |
4633a7c4 |
228 | *nsplit = ch; |
229 | } |
a0d0e21e |
230 | } |
231 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
4633a7c4 |
232 | |
233 | if (!gv) { |
234 | /* Failed obvious case - look for SUPER as last element of stash's name */ |
235 | char *packname = HvNAME(stash); |
236 | STRLEN len = strlen(packname); |
760ac839 |
237 | if (len >= 7 && strEQ(packname+len-7,"::SUPER")) { |
4633a7c4 |
238 | /* Now look for @.*::SUPER::ISA */ |
239 | GV** gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); |
760ac839 |
240 | len -= 7; |
4633a7c4 |
241 | if (!gvp || (gv = *gvp) == (GV*)&sv_undef || !GvAV(gv)) { |
242 | /* No @ISA in package ending in ::SUPER - drop suffix |
243 | and see if there is an @ISA there |
244 | */ |
245 | HV *basestash; |
dc437b57 |
246 | char ch = packname[len]; |
4633a7c4 |
247 | AV *av; |
dc437b57 |
248 | packname[len] = '\0'; |
249 | basestash = gv_stashpvn(packname, len, TRUE); |
250 | packname[len] = ch; |
4633a7c4 |
251 | gvp = (GV**)hv_fetch(basestash,"ISA",3,FALSE); |
252 | if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) { |
253 | /* Okay found @ISA after dropping the SUPER, alias it */ |
254 | SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0)); |
255 | sv_catpvn(tmpstr, "::ISA", 5); |
256 | gv = gv_fetchpv(SvPV(tmpstr,na),TRUE,SVt_PVGV); |
257 | if (gv) { |
258 | GvAV(gv) = (AV*)SvREFCNT_inc(av); |
259 | /* ... and re-try lookup */ |
260 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
261 | } else { |
262 | croak("Cannot create %s::ISA",HvNAME(stash)); |
263 | } |
264 | } |
265 | } |
266 | } |
267 | } |
268 | |
a0d0e21e |
269 | if (!gv) { |
270 | CV* cv; |
271 | |
702887b4 |
272 | if (strEQ(name,"import")) |
dc437b57 |
273 | gv = (GV*)&sv_yes; |
a0d0e21e |
274 | else if (strNE(name, "AUTOLOAD")) { |
275 | gv = gv_fetchmeth(stash, "AUTOLOAD", 8, 0); |
276 | if (gv && (cv = GvCV(gv))) { /* One more chance... */ |
748a9306 |
277 | SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0)); |
a0d0e21e |
278 | sv_catpvn(tmpstr,"::", 2); |
279 | sv_catpvn(tmpstr, name, nend - name); |
280 | sv_setsv(GvSV(CvGV(cv)), tmpstr); |
bbce6d69 |
281 | SvTAINTED_off(GvSV(CvGV(cv))); |
a0d0e21e |
282 | } |
463ee0b2 |
283 | } |
284 | } |
a0d0e21e |
285 | return gv; |
286 | } |
287 | |
288 | HV* |
289 | gv_stashpv(name,create) |
290 | char *name; |
291 | I32 create; |
292 | { |
dc437b57 |
293 | return gv_stashpvn(name, strlen(name), create); |
294 | } |
295 | |
296 | HV* |
297 | gv_stashpvn(name,namelen,create) |
298 | char *name; |
299 | U32 namelen; |
300 | I32 create; |
301 | { |
302 | char tmpbuf[1203]; |
a0d0e21e |
303 | HV *stash; |
304 | GV *tmpgv; |
dc437b57 |
305 | |
306 | if (namelen > 1200) { |
307 | namelen = 1200; |
308 | #ifdef VMS |
309 | warn("Weird package name \"%s\" truncated", name); |
310 | #else |
311 | warn("Weird package name \"%.*s...\" truncated", namelen, name); |
312 | #endif |
313 | } |
314 | Copy(name,tmpbuf,namelen,char); |
315 | tmpbuf[namelen++] = ':'; |
316 | tmpbuf[namelen++] = ':'; |
317 | tmpbuf[namelen] = '\0'; |
a0d0e21e |
318 | tmpgv = gv_fetchpv(tmpbuf,create, SVt_PVHV); |
319 | if (!tmpgv) |
320 | return 0; |
321 | if (!GvHV(tmpgv)) |
322 | GvHV(tmpgv) = newHV(); |
323 | stash = GvHV(tmpgv); |
324 | if (!HvNAME(stash)) |
325 | HvNAME(stash) = savepv(name); |
326 | return stash; |
463ee0b2 |
327 | } |
328 | |
a0d0e21e |
329 | HV* |
330 | gv_stashsv(sv,create) |
331 | SV *sv; |
332 | I32 create; |
333 | { |
dc437b57 |
334 | register char *ptr; |
335 | STRLEN len; |
336 | ptr = SvPV(sv,len); |
337 | return gv_stashpvn(ptr, len, create); |
a0d0e21e |
338 | } |
339 | |
340 | |
463ee0b2 |
341 | GV * |
a0d0e21e |
342 | gv_fetchpv(nambeg,add,sv_type) |
463ee0b2 |
343 | char *nambeg; |
79072805 |
344 | I32 add; |
a0d0e21e |
345 | I32 sv_type; |
79072805 |
346 | { |
463ee0b2 |
347 | register char *name = nambeg; |
348 | register GV *gv = 0; |
79072805 |
349 | GV**gvp; |
79072805 |
350 | I32 len; |
351 | register char *namend; |
463ee0b2 |
352 | HV *stash = 0; |
79072805 |
353 | bool global = FALSE; |
85e6fe83 |
354 | char *tmpbuf; |
79072805 |
355 | |
c07a80fd |
356 | if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */ |
357 | name++; |
358 | |
79072805 |
359 | for (namend = name; *namend; namend++) { |
463ee0b2 |
360 | if ((*namend == '\'' && namend[1]) || |
361 | (*namend == ':' && namend[1] == ':')) |
362 | { |
463ee0b2 |
363 | if (!stash) |
364 | stash = defstash; |
dc437b57 |
365 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0d0e21e |
366 | return Nullgv; |
463ee0b2 |
367 | |
85e6fe83 |
368 | len = namend - name; |
369 | if (len > 0) { |
a0d0e21e |
370 | New(601, tmpbuf, len+3, char); |
371 | Copy(name, tmpbuf, len, char); |
372 | tmpbuf[len++] = ':'; |
373 | tmpbuf[len++] = ':'; |
374 | tmpbuf[len] = '\0'; |
463ee0b2 |
375 | gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); |
85e6fe83 |
376 | Safefree(tmpbuf); |
463ee0b2 |
377 | if (!gvp || *gvp == (GV*)&sv_undef) |
378 | return Nullgv; |
379 | gv = *gvp; |
85e6fe83 |
380 | |
463ee0b2 |
381 | if (SvTYPE(gv) == SVt_PVGV) |
a5f75d66 |
382 | GvMULTI_on(gv); |
a0d0e21e |
383 | else if (!add) |
384 | return Nullgv; |
463ee0b2 |
385 | else |
386 | gv_init(gv, stash, nambeg, namend - nambeg, (add & 2)); |
85e6fe83 |
387 | |
463ee0b2 |
388 | if (!(stash = GvHV(gv))) |
389 | stash = GvHV(gv) = newHV(); |
85e6fe83 |
390 | |
463ee0b2 |
391 | if (!HvNAME(stash)) |
a0d0e21e |
392 | HvNAME(stash) = savepvn(nambeg, namend - nambeg); |
463ee0b2 |
393 | } |
394 | |
395 | if (*namend == ':') |
396 | namend++; |
397 | namend++; |
398 | name = namend; |
399 | if (!*name) |
dc437b57 |
400 | return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE); |
79072805 |
401 | } |
79072805 |
402 | } |
a0d0e21e |
403 | len = namend - name; |
404 | if (!len) |
405 | len = 1; |
463ee0b2 |
406 | |
407 | /* No stash in name, so see how we can default */ |
408 | |
409 | if (!stash) { |
410 | if (isIDFIRST(*name)) { |
411 | if (isUPPER(*name)) { |
412 | if (*name > 'I') { |
413 | if (*name == 'S' && ( |
414 | strEQ(name, "SIG") || |
415 | strEQ(name, "STDIN") || |
416 | strEQ(name, "STDOUT") || |
417 | strEQ(name, "STDERR") )) |
418 | global = TRUE; |
419 | } |
420 | else if (*name > 'E') { |
421 | if (*name == 'I' && strEQ(name, "INC")) |
422 | global = TRUE; |
423 | } |
424 | else if (*name > 'A') { |
425 | if (*name == 'E' && strEQ(name, "ENV")) |
426 | global = TRUE; |
427 | } |
428 | else if (*name == 'A' && ( |
429 | strEQ(name, "ARGV") || |
430 | strEQ(name, "ARGVOUT") )) |
431 | global = TRUE; |
432 | } |
433 | else if (*name == '_' && !name[1]) |
434 | global = TRUE; |
435 | if (global) |
436 | stash = defstash; |
85e6fe83 |
437 | else if ((COP*)curcop == &compiling) { |
a0d0e21e |
438 | stash = curstash; |
748a9306 |
439 | if (add && (hints & HINT_STRICT_VARS) && |
440 | sv_type != SVt_PVCV && |
441 | sv_type != SVt_PVGV && |
4633a7c4 |
442 | sv_type != SVt_PVFM && |
c07a80fd |
443 | sv_type != SVt_PVIO && |
377b8fbc |
444 | !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) ) |
748a9306 |
445 | { |
4633a7c4 |
446 | gvp = (GV**)hv_fetch(stash,name,len,0); |
447 | if (!gvp || |
a5f75d66 |
448 | *gvp == (GV*)&sv_undef || |
449 | SvTYPE(*gvp) != SVt_PVGV) |
450 | { |
4633a7c4 |
451 | stash = 0; |
a5f75d66 |
452 | } |
453 | else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) || |
454 | sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) || |
455 | sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) ) |
4633a7c4 |
456 | { |
a5f75d66 |
457 | warn("Variable \"%c%s\" is not imported", |
4633a7c4 |
458 | sv_type == SVt_PVAV ? '@' : |
459 | sv_type == SVt_PVHV ? '%' : '$', |
460 | name); |
461 | if (GvCV(*gvp)) |
462 | warn("(Did you mean &%s instead?)\n", name); |
a0d0e21e |
463 | stash = 0; |
4633a7c4 |
464 | } |
a0d0e21e |
465 | } |
85e6fe83 |
466 | } |
463ee0b2 |
467 | else |
468 | stash = curcop->cop_stash; |
469 | } |
470 | else |
471 | stash = defstash; |
472 | } |
473 | |
474 | /* By this point we should have a stash and a name */ |
475 | |
a0d0e21e |
476 | if (!stash) { |
477 | if (add) { |
478 | warn("Global symbol \"%s\" requires explicit package name", name); |
479 | ++error_count; |
480 | stash = curstash ? curstash : defstash; /* avoid core dumps */ |
481 | } |
482 | else |
483 | return Nullgv; |
484 | } |
485 | |
486 | if (!SvREFCNT(stash)) /* symbol table under destruction */ |
487 | return Nullgv; |
488 | |
79072805 |
489 | gvp = (GV**)hv_fetch(stash,name,len,add); |
490 | if (!gvp || *gvp == (GV*)&sv_undef) |
491 | return Nullgv; |
492 | gv = *gvp; |
493 | if (SvTYPE(gv) == SVt_PVGV) { |
a0d0e21e |
494 | if (add) { |
a5f75d66 |
495 | GvMULTI_on(gv); |
a0d0e21e |
496 | gv_init_sv(gv, sv_type); |
497 | } |
79072805 |
498 | return gv; |
499 | } |
93a17b20 |
500 | |
501 | /* Adding a new symbol */ |
502 | |
a0d0e21e |
503 | if (add & 4) |
504 | warn("Had to create %s unexpectedly", nambeg); |
463ee0b2 |
505 | gv_init(gv, stash, name, len, add & 2); |
a0d0e21e |
506 | gv_init_sv(gv, sv_type); |
93a17b20 |
507 | |
508 | /* set up magic where warranted */ |
509 | switch (*name) { |
a0d0e21e |
510 | case 'A': |
511 | if (strEQ(name, "ARGV")) { |
512 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; |
513 | } |
514 | break; |
515 | |
ed6116ce |
516 | case 'a': |
517 | case 'b': |
518 | if (len == 1) |
a5f75d66 |
519 | GvMULTI_on(gv); |
ed6116ce |
520 | break; |
a0d0e21e |
521 | case 'E': |
522 | if (strnEQ(name, "EXPORT", 6)) |
a5f75d66 |
523 | GvMULTI_on(gv); |
a0d0e21e |
524 | break; |
463ee0b2 |
525 | case 'I': |
526 | if (strEQ(name, "ISA")) { |
527 | AV* av = GvAVn(gv); |
a5f75d66 |
528 | GvMULTI_on(gv); |
a0d0e21e |
529 | sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0); |
530 | if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1) |
85e6fe83 |
531 | { |
a0d0e21e |
532 | char *pname; |
533 | av_push(av, newSVpv(pname = "NDBM_File",0)); |
dc437b57 |
534 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
535 | av_push(av, newSVpv(pname = "DB_File",0)); |
dc437b57 |
536 | gv_stashpvn(pname, 7, TRUE); |
a0d0e21e |
537 | av_push(av, newSVpv(pname = "GDBM_File",0)); |
dc437b57 |
538 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
539 | av_push(av, newSVpv(pname = "SDBM_File",0)); |
dc437b57 |
540 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
541 | av_push(av, newSVpv(pname = "ODBM_File",0)); |
dc437b57 |
542 | gv_stashpvn(pname, 9, TRUE); |
85e6fe83 |
543 | } |
463ee0b2 |
544 | } |
545 | break; |
a0d0e21e |
546 | #ifdef OVERLOAD |
547 | case 'O': |
548 | if (strEQ(name, "OVERLOAD")) { |
549 | HV* hv = GvHVn(gv); |
a5f75d66 |
550 | GvMULTI_on(gv); |
a0d0e21e |
551 | sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0); |
552 | } |
553 | break; |
554 | #endif /* OVERLOAD */ |
93a17b20 |
555 | case 'S': |
556 | if (strEQ(name, "SIG")) { |
557 | HV *hv; |
dc437b57 |
558 | I32 i; |
93a17b20 |
559 | siggv = gv; |
a5f75d66 |
560 | GvMULTI_on(siggv); |
93a17b20 |
561 | hv = GvHVn(siggv); |
562 | hv_magic(hv, siggv, 'S'); |
dc437b57 |
563 | for(i=1;sig_name[i];i++) { |
564 | SV ** init; |
565 | init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1); |
566 | if(init) |
567 | sv_setsv(*init,&sv_undef); |
568 | psig_ptr[i] = 0; |
569 | psig_name[i] = 0; |
570 | } |
93a17b20 |
571 | /* initialize signal stack */ |
572 | signalstack = newAV(); |
93a17b20 |
573 | AvREAL_off(signalstack); |
a0d0e21e |
574 | av_extend(signalstack, 30); |
575 | av_fill(signalstack, 0); |
93a17b20 |
576 | } |
577 | break; |
578 | |
579 | case '&': |
463ee0b2 |
580 | if (len > 1) |
581 | break; |
93a17b20 |
582 | ampergv = gv; |
583 | sawampersand = TRUE; |
a0d0e21e |
584 | goto ro_magicalize; |
93a17b20 |
585 | |
586 | case '`': |
463ee0b2 |
587 | if (len > 1) |
588 | break; |
93a17b20 |
589 | leftgv = gv; |
590 | sawampersand = TRUE; |
a0d0e21e |
591 | goto ro_magicalize; |
93a17b20 |
592 | |
593 | case '\'': |
463ee0b2 |
594 | if (len > 1) |
595 | break; |
93a17b20 |
596 | rightgv = gv; |
597 | sawampersand = TRUE; |
a0d0e21e |
598 | goto ro_magicalize; |
93a17b20 |
599 | |
600 | case ':': |
463ee0b2 |
601 | if (len > 1) |
602 | break; |
93a17b20 |
603 | sv_setpv(GvSV(gv),chopset); |
604 | goto magicalize; |
605 | |
93a17b20 |
606 | case '#': |
a0d0e21e |
607 | case '*': |
608 | if (dowarn && len == 1 && sv_type == SVt_PV) |
609 | warn("Use of $%s is deprecated", name); |
610 | /* FALL THROUGH */ |
611 | case '[': |
612 | case '!': |
93a17b20 |
613 | case '?': |
614 | case '^': |
615 | case '~': |
616 | case '=': |
617 | case '-': |
618 | case '%': |
619 | case '.': |
93a17b20 |
620 | case '(': |
621 | case ')': |
622 | case '<': |
623 | case '>': |
624 | case ',': |
625 | case '\\': |
626 | case '/': |
93a17b20 |
627 | case '|': |
748a9306 |
628 | case '\001': |
93a17b20 |
629 | case '\004': |
ad8898e0 |
630 | case '\005': |
748a9306 |
631 | case '\006': |
a0d0e21e |
632 | case '\010': |
ad8898e0 |
633 | case '\017': |
93a17b20 |
634 | case '\t': |
635 | case '\020': |
636 | case '\024': |
637 | case '\027': |
463ee0b2 |
638 | if (len > 1) |
639 | break; |
640 | goto magicalize; |
641 | |
a0d0e21e |
642 | case '+': |
463ee0b2 |
643 | case '1': |
644 | case '2': |
645 | case '3': |
646 | case '4': |
647 | case '5': |
648 | case '6': |
649 | case '7': |
650 | case '8': |
651 | case '9': |
a0d0e21e |
652 | ro_magicalize: |
653 | SvREADONLY_on(GvSV(gv)); |
93a17b20 |
654 | magicalize: |
463ee0b2 |
655 | sv_magic(GvSV(gv), (SV*)gv, 0, name, len); |
93a17b20 |
656 | break; |
657 | |
658 | case '\014': |
463ee0b2 |
659 | if (len > 1) |
660 | break; |
93a17b20 |
661 | sv_setpv(GvSV(gv),"\f"); |
662 | formfeed = GvSV(gv); |
663 | break; |
664 | case ';': |
463ee0b2 |
665 | if (len > 1) |
666 | break; |
93a17b20 |
667 | sv_setpv(GvSV(gv),"\034"); |
668 | break; |
463ee0b2 |
669 | case ']': |
670 | if (len == 1) { |
93a17b20 |
671 | SV *sv; |
672 | sv = GvSV(gv); |
673 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e |
674 | sv_setpv(sv, patchlevel); |
93a17b20 |
675 | } |
676 | break; |
79072805 |
677 | } |
93a17b20 |
678 | return gv; |
79072805 |
679 | } |
680 | |
681 | void |
f6aff53a |
682 | gv_fullname3(sv, gv, prefix) |
79072805 |
683 | SV *sv; |
684 | GV *gv; |
f967eb5f |
685 | char *prefix; |
79072805 |
686 | { |
687 | HV *hv = GvSTASH(gv); |
f967eb5f |
688 | if (!hv) { |
689 | SvOK_off(sv); |
79072805 |
690 | return; |
f967eb5f |
691 | } |
692 | sv_setpv(sv, prefix ? prefix : ""); |
79072805 |
693 | sv_catpv(sv,HvNAME(hv)); |
463ee0b2 |
694 | sv_catpvn(sv,"::", 2); |
79072805 |
695 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); |
696 | } |
697 | |
698 | void |
f6aff53a |
699 | gv_efullname3(sv, gv, prefix) |
79072805 |
700 | SV *sv; |
701 | GV *gv; |
f967eb5f |
702 | char *prefix; |
79072805 |
703 | { |
f967eb5f |
704 | GV *egv = GvEGV(gv); |
748a9306 |
705 | if (!egv) |
706 | egv = gv; |
f6aff53a |
707 | gv_fullname3(sv, egv, prefix); |
708 | } |
709 | |
710 | /* XXX compatibility with versions <= 5.003. */ |
711 | void |
712 | gv_fullname(sv,gv) |
713 | SV *sv; |
714 | GV *gv; |
715 | { |
716 | gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : ""); |
717 | } |
718 | |
719 | /* XXX compatibility with versions <= 5.003. */ |
720 | void |
721 | gv_efullname(sv,gv) |
722 | SV *sv; |
723 | GV *gv; |
724 | { |
725 | gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : ""); |
79072805 |
726 | } |
727 | |
728 | IO * |
729 | newIO() |
730 | { |
731 | IO *io; |
8990e307 |
732 | GV *iogv; |
733 | |
734 | io = (IO*)NEWSV(0,0); |
a0d0e21e |
735 | sv_upgrade((SV *)io,SVt_PVIO); |
8990e307 |
736 | SvREFCNT(io) = 1; |
737 | SvOBJECT_on(io); |
dc437b57 |
738 | iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV); |
8990e307 |
739 | SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv)); |
79072805 |
740 | return io; |
741 | } |
742 | |
743 | void |
463ee0b2 |
744 | gv_check(stash) |
745 | HV* stash; |
79072805 |
746 | { |
747 | register HE *entry; |
748 | register I32 i; |
749 | register GV *gv; |
463ee0b2 |
750 | HV *hv; |
a0d0e21e |
751 | GV *filegv; |
463ee0b2 |
752 | |
8990e307 |
753 | if (!HvARRAY(stash)) |
754 | return; |
a0d0e21e |
755 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
dc437b57 |
756 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
757 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && |
758 | (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv)) |
a0d0e21e |
759 | { |
760 | if (hv != defstash) |
761 | gv_check(hv); /* nested package */ |
762 | } |
dc437b57 |
763 | else if (isALPHA(*HeKEY(entry))) { |
764 | gv = (GV*)HeVAL(entry); |
a5f75d66 |
765 | if (GvMULTI(gv)) |
463ee0b2 |
766 | continue; |
767 | curcop->cop_line = GvLINE(gv); |
a0d0e21e |
768 | filegv = GvFILEGV(gv); |
769 | curcop->cop_filegv = filegv; |
a5f75d66 |
770 | if (filegv && GvMULTI(filegv)) /* Filename began with slash */ |
8990e307 |
771 | continue; |
dc437b57 |
772 | warn("Name \"%s::%s\" used only once: possible typo", |
a0d0e21e |
773 | HvNAME(stash), GvNAME(gv)); |
463ee0b2 |
774 | } |
79072805 |
775 | } |
776 | } |
777 | } |
778 | |
779 | GV * |
a0d0e21e |
780 | newGVgen(pack) |
781 | char *pack; |
79072805 |
782 | { |
a0d0e21e |
783 | (void)sprintf(tokenbuf,"%s::_GEN_%ld",pack,(long)gensym++); |
85e6fe83 |
784 | return gv_fetchpv(tokenbuf,TRUE, SVt_PVGV); |
79072805 |
785 | } |
786 | |
787 | /* hopefully this is only called on local symbol table entries */ |
788 | |
789 | GP* |
790 | gp_ref(gp) |
791 | GP* gp; |
792 | { |
793 | gp->gp_refcnt++; |
794 | return gp; |
795 | |
796 | } |
797 | |
798 | void |
799 | gp_free(gv) |
800 | GV* gv; |
801 | { |
79072805 |
802 | GP* gp; |
377b8fbc |
803 | CV* cv; |
79072805 |
804 | |
805 | if (!gv || !(gp = GvGP(gv))) |
806 | return; |
807 | if (gp->gp_refcnt == 0) { |
808 | warn("Attempt to free unreferenced glob pointers"); |
809 | return; |
810 | } |
748a9306 |
811 | if (--gp->gp_refcnt > 0) { |
812 | if (gp->gp_egv == gv) |
813 | gp->gp_egv = 0; |
79072805 |
814 | return; |
748a9306 |
815 | } |
79072805 |
816 | |
8990e307 |
817 | SvREFCNT_dec(gp->gp_sv); |
818 | SvREFCNT_dec(gp->gp_av); |
819 | SvREFCNT_dec(gp->gp_hv); |
377b8fbc |
820 | SvREFCNT_dec(gp->gp_io); |
a6006777 |
821 | SvREFCNT_dec(gp->gp_cv); |
748a9306 |
822 | SvREFCNT_dec(gp->gp_form); |
823 | |
79072805 |
824 | Safefree(gp); |
825 | GvGP(gv) = 0; |
826 | } |
827 | |
828 | #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286)) |
829 | #define MICROPORT |
830 | #endif |
831 | |
832 | #ifdef MICROPORT /* Microport 2.4 hack */ |
833 | AV *GvAVn(gv) |
834 | register GV *gv; |
835 | { |
836 | if (GvGP(gv)->gp_av) |
837 | return GvGP(gv)->gp_av; |
838 | else |
839 | return GvGP(gv_AVadd(gv))->gp_av; |
840 | } |
841 | |
842 | HV *GvHVn(gv) |
843 | register GV *gv; |
844 | { |
845 | if (GvGP(gv)->gp_hv) |
846 | return GvGP(gv)->gp_hv; |
847 | else |
848 | return GvGP(gv_HVadd(gv))->gp_hv; |
849 | } |
850 | #endif /* Microport 2.4 hack */ |
a0d0e21e |
851 | |
852 | #ifdef OVERLOAD |
853 | /* Updates and caches the CV's */ |
854 | |
855 | bool |
856 | Gv_AMupdate(stash) |
857 | HV* stash; |
858 | { |
859 | GV** gvp; |
860 | HV* hv; |
861 | GV* gv; |
862 | CV* cv; |
863 | MAGIC* mg=mg_find((SV*)stash,'c'); |
748a9306 |
864 | AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL; |
a6006777 |
865 | AMT amt; |
a0d0e21e |
866 | |
867 | if (mg && (amtp=((AMT*)(mg->mg_ptr)))->was_ok_am == amagic_generation && |
868 | amtp->was_ok_sub == sub_generation) |
a6006777 |
869 | return AMT_AMAGIC(amtp); |
870 | if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */ |
748a9306 |
871 | int i; |
a6006777 |
872 | for (i=1; i<NofAMmeth; i++) { |
748a9306 |
873 | if (amtp->table[i]) { |
874 | SvREFCNT_dec(amtp->table[i]); |
875 | } |
876 | } |
877 | } |
a0d0e21e |
878 | sv_unmagic((SV*)stash, 'c'); |
879 | |
880 | DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) ); |
881 | |
a6006777 |
882 | amt.was_ok_am = amagic_generation; |
883 | amt.was_ok_sub = sub_generation; |
884 | amt.fallback = AMGfallNO; |
885 | amt.flags = 0; |
886 | |
887 | #ifdef OVERLOAD_VIA_HASH |
888 | gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */ |
a0d0e21e |
889 | if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) { |
890 | int filled=0; |
891 | int i; |
892 | char *cp; |
a0d0e21e |
893 | SV* sv; |
894 | SV** svp; |
a0d0e21e |
895 | |
896 | /* Work with "fallback" key, which we assume to be first in AMG_names */ |
897 | |
a6006777 |
898 | if (( cp = (char *)AMG_names[0] ) && |
899 | (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) { |
a0d0e21e |
900 | if (SvTRUE(sv)) amt.fallback=AMGfallYES; |
901 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; |
902 | } |
a6006777 |
903 | for (i = 1; i < NofAMmeth; i++) { |
904 | cv = 0; |
905 | cp = (char *)AMG_names[i]; |
906 | |
907 | svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE); |
dc437b57 |
908 | if (svp && ((sv = *svp) != &sv_undef)) { |
a0d0e21e |
909 | switch (SvTYPE(sv)) { |
910 | default: |
911 | if (!SvROK(sv)) { |
912 | if (!SvOK(sv)) break; |
748a9306 |
913 | gv = gv_fetchmethod(stash, SvPV(sv, na)); |
a0d0e21e |
914 | if (gv) cv = GvCV(gv); |
915 | break; |
916 | } |
917 | cv = (CV*)SvRV(sv); |
918 | if (SvTYPE(cv) == SVt_PVCV) |
919 | break; |
920 | /* FALL THROUGH */ |
921 | case SVt_PVHV: |
922 | case SVt_PVAV: |
a6006777 |
923 | croak("Not a subroutine reference in overload table"); |
a0d0e21e |
924 | return FALSE; |
925 | case SVt_PVCV: |
926 | cv = (CV*)sv; |
927 | break; |
928 | case SVt_PVGV: |
929 | if (!(cv = GvCV((GV*)sv))) |
930 | cv = sv_2cv(sv, &stash, &gv, TRUE); |
931 | break; |
932 | } |
933 | if (cv) filled=1; |
934 | else { |
a6006777 |
935 | croak("Method for operation %s not found in package %.256s during blessing\n", |
a0d0e21e |
936 | cp,HvNAME(stash)); |
937 | return FALSE; |
938 | } |
939 | } |
a6006777 |
940 | #else |
941 | { |
942 | int filled = 0; |
943 | int i; |
944 | char *cp; |
945 | SV* sv = NULL; |
946 | SV** svp; |
947 | |
948 | /* Work with "fallback" key, which we assume to be first in AMG_names */ |
949 | |
950 | if ( cp = (char *)AMG_names[0] ) { |
951 | /* Try to find via inheritance. */ |
952 | gv = gv_fetchmeth(stash, "()", 2, 0); /* A cooky: "()". */ |
953 | if (gv) sv = GvSV(gv); |
954 | |
955 | if (!sv) /* Empty */; |
956 | else if (SvTRUE(sv)) amt.fallback=AMGfallYES; |
957 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; |
958 | } |
959 | |
960 | for (i = 1; i < NofAMmeth; i++) { |
961 | cv = 0; |
962 | cp = (char *)AMG_names[i]; |
963 | |
964 | *buf = '('; /* A cooky: "(". */ |
965 | strcpy(buf + 1, cp); |
966 | gv = gv_fetchmeth(stash, buf, strlen(buf), 0); /* fills the stash! */ |
967 | if(gv && (cv = GvCV(gv))) filled = 1; |
968 | #endif |
969 | amt.table[i]=(CV*)SvREFCNT_inc(cv); |
a0d0e21e |
970 | } |
a0d0e21e |
971 | if (filled) { |
a6006777 |
972 | AMT_AMAGIC_on(&amt); |
973 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT)); |
a0d0e21e |
974 | return TRUE; |
975 | } |
976 | } |
a6006777 |
977 | /* Here we have no table: */ |
978 | AMT_AMAGIC_off(&amt); |
979 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS)); |
a0d0e21e |
980 | return FALSE; |
981 | } |
982 | |
983 | /* During call to this subroutine stack can be reallocated. It is |
984 | * advised to call SPAGAIN macro in your code after call */ |
985 | |
986 | SV* |
987 | amagic_call(left,right,method,flags) |
988 | SV* left; |
989 | SV* right; |
990 | int method; |
991 | int flags; |
992 | { |
993 | MAGIC *mg; |
994 | CV *cv; |
995 | CV **cvp=NULL, **ocvp=NULL; |
996 | AMT *amtp, *oamtp; |
997 | int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0; |
748a9306 |
998 | int postpr=0, inc_dec_ass=0, assignshift=assign?1:0; |
a0d0e21e |
999 | HV* stash; |
1000 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) |
1001 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c')) |
a6006777 |
1002 | && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1003 | ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table |
1004 | : NULL)) |
748a9306 |
1005 | && ((cv = cvp[off=method+assignshift]) |
1006 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to |
1007 | * usual method */ |
1008 | (fl = 1, cv = cvp[off=method])))) { |
a0d0e21e |
1009 | lr = -1; /* Call method for left argument */ |
1010 | } else { |
1011 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { |
1012 | int logic; |
1013 | |
1014 | /* look for substituted methods */ |
1015 | switch (method) { |
1016 | case inc_amg: |
748a9306 |
1017 | if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1)) |
a0d0e21e |
1018 | || ((cv = cvp[off=add_amg]) && (postpr=1))) { |
1019 | right = &sv_yes; lr = -1; assign = 1; |
1020 | } |
1021 | break; |
1022 | case dec_amg: |
748a9306 |
1023 | if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1)) |
a0d0e21e |
1024 | || ((cv = cvp[off=subtr_amg]) && (postpr=1))) { |
1025 | right = &sv_yes; lr = -1; assign = 1; |
1026 | } |
1027 | break; |
1028 | case bool__amg: |
1029 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); |
1030 | break; |
1031 | case numer_amg: |
1032 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); |
1033 | break; |
1034 | case string_amg: |
1035 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); |
1036 | break; |
dc437b57 |
1037 | case not_amg: |
1038 | (void)((cv = cvp[off=bool__amg]) |
1039 | || (cv = cvp[off=numer_amg]) |
1040 | || (cv = cvp[off=string_amg])); |
1041 | postpr = 1; |
1042 | break; |
748a9306 |
1043 | case copy_amg: |
1044 | { |
1045 | SV* ref=SvRV(left); |
1046 | if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { /* Just to be |
1047 | * extra |
1048 | * causious, |
1049 | * maybe in some |
1050 | * additional |
1051 | * cases sv_setsv |
1052 | * is safe too */ |
1053 | SV* newref = newSVsv(ref); |
1054 | SvOBJECT_on(newref); |
1055 | SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref)); |
1056 | return newref; |
1057 | } |
1058 | } |
1059 | break; |
a0d0e21e |
1060 | case abs_amg: |
748a9306 |
1061 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e |
1062 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
748a9306 |
1063 | SV* nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e |
1064 | if (off1==lt_amg) { |
748a9306 |
1065 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e |
1066 | lt_amg,AMGf_noright); |
1067 | logic = SvTRUE(lessp); |
1068 | } else { |
748a9306 |
1069 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e |
1070 | ncmp_amg,AMGf_noright); |
1071 | logic = (SvNV(lessp) < 0); |
1072 | } |
1073 | if (logic) { |
1074 | if (off==subtr_amg) { |
1075 | right = left; |
748a9306 |
1076 | left = nullsv; |
a0d0e21e |
1077 | lr = 1; |
1078 | } |
1079 | } else { |
1080 | return left; |
1081 | } |
1082 | } |
1083 | break; |
1084 | case neg_amg: |
1085 | if (cv = cvp[off=subtr_amg]) { |
1086 | right = left; |
1087 | left = sv_2mortal(newSViv(0)); |
1088 | lr = 1; |
1089 | } |
1090 | break; |
1091 | default: |
1092 | goto not_found; |
1093 | } |
1094 | if (!cv) goto not_found; |
1095 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) |
1096 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c')) |
a6006777 |
1097 | && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1098 | ? (amtp = (AMT*)mg->mg_ptr)->table |
1099 | : NULL)) |
a0d0e21e |
1100 | && (cv = cvp[off=method])) { /* Method for right |
1101 | * argument found */ |
1102 | lr=1; |
748a9306 |
1103 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
4633a7c4 |
1104 | && (cvp=ocvp) && (lr = -1)) |
a0d0e21e |
1105 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
1106 | && !(flags & AMGf_unary)) { |
1107 | /* We look for substitution for |
1108 | * comparison operations and |
1109 | * concatendation */ |
1110 | if (method==concat_amg || method==concat_ass_amg |
1111 | || method==repeat_amg || method==repeat_ass_amg) { |
1112 | return NULL; /* Delegate operation to string conversion */ |
1113 | } |
1114 | off = -1; |
1115 | switch (method) { |
1116 | case lt_amg: |
1117 | case le_amg: |
1118 | case gt_amg: |
1119 | case ge_amg: |
1120 | case eq_amg: |
1121 | case ne_amg: |
1122 | postpr = 1; off=ncmp_amg; break; |
1123 | case slt_amg: |
1124 | case sle_amg: |
1125 | case sgt_amg: |
1126 | case sge_amg: |
1127 | case seq_amg: |
1128 | case sne_amg: |
1129 | postpr = 1; off=scmp_amg; break; |
1130 | } |
1131 | if (off != -1) cv = cvp[off]; |
1132 | if (!cv) { |
1133 | goto not_found; |
1134 | } |
1135 | } else { |
a6006777 |
1136 | not_found: /* No method found, either report or croak */ |
a0d0e21e |
1137 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
1138 | notfound = 1; lr = -1; |
1139 | } else if (cvp && (cv=cvp[nomethod_amg])) { |
1140 | notfound = 1; lr = 1; |
1141 | } else { |
748a9306 |
1142 | if (off==-1) off=method; |
06b43eb7 |
1143 | sprintf(buf, "Operation `%s': no method found,\n\tleft argument %s%.256s,\n\tright argument %s%.256s", |
a6006777 |
1144 | AMG_names[method + assignshift], |
a0d0e21e |
1145 | SvAMAGIC(left)? |
1146 | "in overloaded package ": |
1147 | "has no overloaded magic", |
1148 | SvAMAGIC(left)? |
1149 | HvNAME(SvSTASH(SvRV(left))): |
1150 | "", |
1151 | SvAMAGIC(right)? |
1152 | "in overloaded package ": |
1153 | "has no overloaded magic", |
1154 | SvAMAGIC(right)? |
1155 | HvNAME(SvSTASH(SvRV(right))): |
1156 | ""); |
1157 | if (amtp && amtp->fallback >= AMGfallYES) { |
06b43eb7 |
1158 | DEBUG_o( deb(buf) ); |
a0d0e21e |
1159 | } else { |
a6006777 |
1160 | croak(buf); |
a0d0e21e |
1161 | } |
1162 | return NULL; |
1163 | } |
1164 | } |
1165 | } |
1166 | if (!notfound) { |
06b43eb7 |
1167 | DEBUG_o( deb("Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %.256s%s\n", |
a6006777 |
1168 | AMG_names[off], |
748a9306 |
1169 | method+assignshift==off? "" : |
1170 | " (initially `", |
1171 | method+assignshift==off? "" : |
a6006777 |
1172 | AMG_names[method+assignshift], |
748a9306 |
1173 | method+assignshift==off? "" : "')", |
1174 | flags & AMGf_unary? "" : |
1175 | lr==1 ? " for right argument": " for left argument", |
1176 | flags & AMGf_unary? " for argument" : "", |
a0d0e21e |
1177 | HvNAME(stash), |
1178 | fl? ",\n\tassignment variant used": "") ); |
748a9306 |
1179 | /* Since we use shallow copy during assignment, we need |
1180 | * to dublicate the contents, probably calling user-supplied |
1181 | * version of copy operator |
1182 | */ |
c07a80fd |
1183 | if ((method + assignshift==off |
748a9306 |
1184 | && (assign || method==inc_amg || method==dec_amg)) |
1185 | || inc_dec_ass) RvDEEPCP(left); |
a0d0e21e |
1186 | } |
1187 | { |
1188 | dSP; |
1189 | BINOP myop; |
1190 | SV* res; |
1191 | |
1192 | Zero(&myop, 1, BINOP); |
1193 | myop.op_last = (OP *) &myop; |
1194 | myop.op_next = Nullop; |
1195 | myop.op_flags = OPf_KNOW|OPf_STACKED; |
1196 | |
1197 | ENTER; |
1198 | SAVESPTR(op); |
1199 | op = (OP *) &myop; |
dc437b57 |
1200 | if (perldb && curstash != debstash) |
1201 | op->op_private |= OPpENTERSUB_DB; |
a0d0e21e |
1202 | PUTBACK; |
1203 | pp_pushmark(); |
1204 | |
1205 | EXTEND(sp, notfound + 5); |
1206 | PUSHs(lr>0? right: left); |
1207 | PUSHs(lr>0? left: right); |
1208 | PUSHs( assign ? &sv_undef : (lr>0? &sv_yes: &sv_no)); |
1209 | if (notfound) { |
a6006777 |
1210 | PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) ); |
a0d0e21e |
1211 | } |
1212 | PUSHs((SV*)cv); |
1213 | PUTBACK; |
1214 | |
1215 | if (op = pp_entersub()) |
ad8898e0 |
1216 | runops(); |
a0d0e21e |
1217 | LEAVE; |
1218 | SPAGAIN; |
1219 | |
1220 | res=POPs; |
1221 | PUTBACK; |
1222 | |
1223 | if (notfound) { |
1224 | /* sv_2mortal(res); */ |
1225 | return NULL; |
1226 | } |
1227 | |
1228 | if (postpr) { |
1229 | int ans; |
1230 | switch (method) { |
1231 | case le_amg: |
1232 | case sle_amg: |
1233 | ans=SvIV(res)<=0; break; |
1234 | case lt_amg: |
1235 | case slt_amg: |
1236 | ans=SvIV(res)<0; break; |
1237 | case ge_amg: |
1238 | case sge_amg: |
1239 | ans=SvIV(res)>=0; break; |
1240 | case gt_amg: |
1241 | case sgt_amg: |
1242 | ans=SvIV(res)>0; break; |
1243 | case eq_amg: |
1244 | case seq_amg: |
1245 | ans=SvIV(res)==0; break; |
1246 | case ne_amg: |
1247 | case sne_amg: |
1248 | ans=SvIV(res)!=0; break; |
1249 | case inc_amg: |
1250 | case dec_amg: |
bbce6d69 |
1251 | SvSetSV(left,res); return left; |
dc437b57 |
1252 | case not_amg: |
1253 | ans=!SvOK(res); break; |
a0d0e21e |
1254 | } |
1255 | return ans? &sv_yes: &sv_no; |
748a9306 |
1256 | } else if (method==copy_amg) { |
1257 | if (!SvROK(res)) { |
a6006777 |
1258 | croak("Copy method did not return a reference"); |
748a9306 |
1259 | } |
1260 | return SvREFCNT_inc(SvRV(res)); |
a0d0e21e |
1261 | } else { |
1262 | return res; |
1263 | } |
1264 | } |
1265 | } |
1266 | #endif /* OVERLOAD */ |