Commit | Line | Data |
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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 | |
463ee0b2 |
22 | extern 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 | |
748a9306 |
146 | if (cv=GvCV(topgv)) { |
147 | if (GvCVGEN(topgv) >= sub_generation) |
148 | return topgv; /* valid cached inheritance */ |
149 | if (!GvCVGEN(topgv)) { /* not an inheritance cache */ |
16d20bd9 |
150 | return topgv; |
748a9306 |
151 | } |
152 | else { |
153 | /* stale cached entry, just junk it */ |
154 | GvCV(topgv) = cv = 0; |
155 | GvCVGEN(topgv) = 0; |
156 | } |
463ee0b2 |
157 | } |
748a9306 |
158 | /* if cv is still set, we have to free it if we find something to cache */ |
79072805 |
159 | |
160 | gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); |
161 | if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) { |
162 | SV** svp = AvARRAY(av); |
163 | I32 items = AvFILL(av) + 1; |
164 | while (items--) { |
79072805 |
165 | SV* sv = *svp++; |
a0d0e21e |
166 | HV* basestash = gv_stashsv(sv, FALSE); |
9bbf4081 |
167 | if (!basestash) { |
79072805 |
168 | if (dowarn) |
a0d0e21e |
169 | warn("Can't locate package %s for @%s::ISA", |
463ee0b2 |
170 | SvPVX(sv), HvNAME(stash)); |
79072805 |
171 | continue; |
172 | } |
a0d0e21e |
173 | gv = gv_fetchmeth(basestash, name, len, level + 1); |
463ee0b2 |
174 | if (gv) { |
748a9306 |
175 | if (cv) { /* junk old undef */ |
176 | assert(SvREFCNT(topgv) > 1); |
177 | SvREFCNT_dec(topgv); |
178 | SvREFCNT_dec(cv); |
179 | } |
463ee0b2 |
180 | GvCV(topgv) = GvCV(gv); /* cache the CV */ |
181 | GvCVGEN(topgv) = sub_generation; /* valid for now */ |
79072805 |
182 | return gv; |
463ee0b2 |
183 | } |
79072805 |
184 | } |
185 | } |
a0d0e21e |
186 | |
187 | if (!level) { |
dc437b57 |
188 | if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) { |
a0d0e21e |
189 | if (gv = gv_fetchmeth(lastchance, name, len, level + 1)) { |
748a9306 |
190 | if (cv) { /* junk old undef */ |
191 | assert(SvREFCNT(topgv) > 1); |
192 | SvREFCNT_dec(topgv); |
193 | SvREFCNT_dec(cv); |
194 | } |
a0d0e21e |
195 | GvCV(topgv) = GvCV(gv); /* cache the CV */ |
196 | GvCVGEN(topgv) = sub_generation; /* valid for now */ |
197 | return gv; |
198 | } |
199 | } |
200 | } |
201 | |
79072805 |
202 | return 0; |
203 | } |
204 | |
205 | GV * |
463ee0b2 |
206 | gv_fetchmethod(stash, name) |
207 | HV* stash; |
208 | char* name; |
209 | { |
210 | register char *nend; |
a0d0e21e |
211 | char *nsplit = 0; |
212 | GV* gv; |
463ee0b2 |
213 | |
214 | for (nend = name; *nend; nend++) { |
a0d0e21e |
215 | if (*nend == ':' || *nend == '\'') |
216 | nsplit = nend; |
217 | } |
218 | if (nsplit) { |
219 | char ch; |
220 | char *origname = name; |
221 | name = nsplit + 1; |
222 | ch = *nsplit; |
223 | if (*nsplit == ':') |
224 | --nsplit; |
225 | *nsplit = '\0'; |
4633a7c4 |
226 | if (strEQ(origname,"SUPER")) { |
227 | /* Degenerate case ->SUPER::method should really lookup in original stash */ |
37120919 |
228 | SV *tmpstr = sv_2mortal(newSVpv(HvNAME(curcop->cop_stash),0)); |
4633a7c4 |
229 | sv_catpvn(tmpstr, "::SUPER", 7); |
dc437b57 |
230 | stash = gv_stashpvn(SvPVX(tmpstr),SvCUR(tmpstr),TRUE); |
4633a7c4 |
231 | *nsplit = ch; |
232 | DEBUG_o( deb("Treating %s as %s::%s\n",origname,HvNAME(stash),name) ); |
233 | } else { |
dc437b57 |
234 | stash = gv_stashpvn(origname, nsplit - origname, TRUE); |
4633a7c4 |
235 | *nsplit = ch; |
236 | } |
a0d0e21e |
237 | } |
238 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
4633a7c4 |
239 | |
240 | if (!gv) { |
241 | /* Failed obvious case - look for SUPER as last element of stash's name */ |
242 | char *packname = HvNAME(stash); |
243 | STRLEN len = strlen(packname); |
760ac839 |
244 | if (len >= 7 && strEQ(packname+len-7,"::SUPER")) { |
4633a7c4 |
245 | /* Now look for @.*::SUPER::ISA */ |
246 | GV** gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); |
760ac839 |
247 | len -= 7; |
4633a7c4 |
248 | if (!gvp || (gv = *gvp) == (GV*)&sv_undef || !GvAV(gv)) { |
249 | /* No @ISA in package ending in ::SUPER - drop suffix |
250 | and see if there is an @ISA there |
251 | */ |
252 | HV *basestash; |
dc437b57 |
253 | char ch = packname[len]; |
4633a7c4 |
254 | AV *av; |
dc437b57 |
255 | packname[len] = '\0'; |
256 | basestash = gv_stashpvn(packname, len, TRUE); |
257 | packname[len] = ch; |
4633a7c4 |
258 | gvp = (GV**)hv_fetch(basestash,"ISA",3,FALSE); |
259 | if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) { |
260 | /* Okay found @ISA after dropping the SUPER, alias it */ |
261 | SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0)); |
262 | sv_catpvn(tmpstr, "::ISA", 5); |
263 | gv = gv_fetchpv(SvPV(tmpstr,na),TRUE,SVt_PVGV); |
264 | if (gv) { |
265 | GvAV(gv) = (AV*)SvREFCNT_inc(av); |
266 | /* ... and re-try lookup */ |
267 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
268 | } else { |
269 | croak("Cannot create %s::ISA",HvNAME(stash)); |
270 | } |
271 | } |
272 | } |
273 | } |
274 | } |
275 | |
a0d0e21e |
276 | if (!gv) { |
277 | CV* cv; |
278 | |
279 | if (strEQ(name,"import") || strEQ(name,"unimport")) |
dc437b57 |
280 | gv = (GV*)&sv_yes; |
a0d0e21e |
281 | else if (strNE(name, "AUTOLOAD")) { |
282 | gv = gv_fetchmeth(stash, "AUTOLOAD", 8, 0); |
283 | if (gv && (cv = GvCV(gv))) { /* One more chance... */ |
748a9306 |
284 | SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0)); |
a0d0e21e |
285 | sv_catpvn(tmpstr,"::", 2); |
286 | sv_catpvn(tmpstr, name, nend - name); |
287 | sv_setsv(GvSV(CvGV(cv)), tmpstr); |
c07a80fd |
288 | if (tainting) |
289 | sv_unmagic(GvSV(CvGV(cv)), 't'); |
a0d0e21e |
290 | } |
463ee0b2 |
291 | } |
292 | } |
a0d0e21e |
293 | return gv; |
294 | } |
295 | |
296 | HV* |
297 | gv_stashpv(name,create) |
298 | char *name; |
299 | I32 create; |
300 | { |
dc437b57 |
301 | return gv_stashpvn(name, strlen(name), create); |
302 | } |
303 | |
304 | HV* |
305 | gv_stashpvn(name,namelen,create) |
306 | char *name; |
307 | U32 namelen; |
308 | I32 create; |
309 | { |
310 | char tmpbuf[1203]; |
a0d0e21e |
311 | HV *stash; |
312 | GV *tmpgv; |
dc437b57 |
313 | |
314 | if (namelen > 1200) { |
315 | namelen = 1200; |
316 | #ifdef VMS |
317 | warn("Weird package name \"%s\" truncated", name); |
318 | #else |
319 | warn("Weird package name \"%.*s...\" truncated", namelen, name); |
320 | #endif |
321 | } |
322 | Copy(name,tmpbuf,namelen,char); |
323 | tmpbuf[namelen++] = ':'; |
324 | tmpbuf[namelen++] = ':'; |
325 | tmpbuf[namelen] = '\0'; |
a0d0e21e |
326 | tmpgv = gv_fetchpv(tmpbuf,create, SVt_PVHV); |
327 | if (!tmpgv) |
328 | return 0; |
329 | if (!GvHV(tmpgv)) |
330 | GvHV(tmpgv) = newHV(); |
331 | stash = GvHV(tmpgv); |
332 | if (!HvNAME(stash)) |
333 | HvNAME(stash) = savepv(name); |
334 | return stash; |
463ee0b2 |
335 | } |
336 | |
a0d0e21e |
337 | HV* |
338 | gv_stashsv(sv,create) |
339 | SV *sv; |
340 | I32 create; |
341 | { |
dc437b57 |
342 | register char *ptr; |
343 | STRLEN len; |
344 | ptr = SvPV(sv,len); |
345 | return gv_stashpvn(ptr, len, create); |
a0d0e21e |
346 | } |
347 | |
348 | |
463ee0b2 |
349 | GV * |
a0d0e21e |
350 | gv_fetchpv(nambeg,add,sv_type) |
463ee0b2 |
351 | char *nambeg; |
79072805 |
352 | I32 add; |
a0d0e21e |
353 | I32 sv_type; |
79072805 |
354 | { |
463ee0b2 |
355 | register char *name = nambeg; |
356 | register GV *gv = 0; |
79072805 |
357 | GV**gvp; |
79072805 |
358 | I32 len; |
359 | register char *namend; |
463ee0b2 |
360 | HV *stash = 0; |
79072805 |
361 | bool global = FALSE; |
85e6fe83 |
362 | char *tmpbuf; |
79072805 |
363 | |
c07a80fd |
364 | if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */ |
365 | name++; |
366 | |
79072805 |
367 | for (namend = name; *namend; namend++) { |
463ee0b2 |
368 | if ((*namend == '\'' && namend[1]) || |
369 | (*namend == ':' && namend[1] == ':')) |
370 | { |
463ee0b2 |
371 | if (!stash) |
372 | stash = defstash; |
dc437b57 |
373 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0d0e21e |
374 | return Nullgv; |
463ee0b2 |
375 | |
85e6fe83 |
376 | len = namend - name; |
377 | if (len > 0) { |
a0d0e21e |
378 | New(601, tmpbuf, len+3, char); |
379 | Copy(name, tmpbuf, len, char); |
380 | tmpbuf[len++] = ':'; |
381 | tmpbuf[len++] = ':'; |
382 | tmpbuf[len] = '\0'; |
463ee0b2 |
383 | gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); |
85e6fe83 |
384 | Safefree(tmpbuf); |
463ee0b2 |
385 | if (!gvp || *gvp == (GV*)&sv_undef) |
386 | return Nullgv; |
387 | gv = *gvp; |
85e6fe83 |
388 | |
463ee0b2 |
389 | if (SvTYPE(gv) == SVt_PVGV) |
a5f75d66 |
390 | GvMULTI_on(gv); |
a0d0e21e |
391 | else if (!add) |
392 | return Nullgv; |
463ee0b2 |
393 | else |
394 | gv_init(gv, stash, nambeg, namend - nambeg, (add & 2)); |
85e6fe83 |
395 | |
463ee0b2 |
396 | if (!(stash = GvHV(gv))) |
397 | stash = GvHV(gv) = newHV(); |
85e6fe83 |
398 | |
463ee0b2 |
399 | if (!HvNAME(stash)) |
a0d0e21e |
400 | HvNAME(stash) = savepvn(nambeg, namend - nambeg); |
463ee0b2 |
401 | } |
402 | |
403 | if (*namend == ':') |
404 | namend++; |
405 | namend++; |
406 | name = namend; |
407 | if (!*name) |
dc437b57 |
408 | return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE); |
79072805 |
409 | } |
79072805 |
410 | } |
a0d0e21e |
411 | len = namend - name; |
412 | if (!len) |
413 | len = 1; |
463ee0b2 |
414 | |
415 | /* No stash in name, so see how we can default */ |
416 | |
417 | if (!stash) { |
418 | if (isIDFIRST(*name)) { |
419 | if (isUPPER(*name)) { |
420 | if (*name > 'I') { |
421 | if (*name == 'S' && ( |
422 | strEQ(name, "SIG") || |
423 | strEQ(name, "STDIN") || |
424 | strEQ(name, "STDOUT") || |
425 | strEQ(name, "STDERR") )) |
426 | global = TRUE; |
427 | } |
428 | else if (*name > 'E') { |
429 | if (*name == 'I' && strEQ(name, "INC")) |
430 | global = TRUE; |
431 | } |
432 | else if (*name > 'A') { |
433 | if (*name == 'E' && strEQ(name, "ENV")) |
434 | global = TRUE; |
435 | } |
436 | else if (*name == 'A' && ( |
437 | strEQ(name, "ARGV") || |
438 | strEQ(name, "ARGVOUT") )) |
439 | global = TRUE; |
440 | } |
441 | else if (*name == '_' && !name[1]) |
442 | global = TRUE; |
443 | if (global) |
444 | stash = defstash; |
85e6fe83 |
445 | else if ((COP*)curcop == &compiling) { |
a0d0e21e |
446 | stash = curstash; |
748a9306 |
447 | if (add && (hints & HINT_STRICT_VARS) && |
448 | sv_type != SVt_PVCV && |
449 | sv_type != SVt_PVGV && |
4633a7c4 |
450 | sv_type != SVt_PVFM && |
c07a80fd |
451 | sv_type != SVt_PVIO && |
377b8fbc |
452 | !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) ) |
748a9306 |
453 | { |
4633a7c4 |
454 | gvp = (GV**)hv_fetch(stash,name,len,0); |
455 | if (!gvp || |
a5f75d66 |
456 | *gvp == (GV*)&sv_undef || |
457 | SvTYPE(*gvp) != SVt_PVGV) |
458 | { |
4633a7c4 |
459 | stash = 0; |
a5f75d66 |
460 | } |
461 | else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) || |
462 | sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) || |
463 | sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) ) |
4633a7c4 |
464 | { |
a5f75d66 |
465 | warn("Variable \"%c%s\" is not imported", |
4633a7c4 |
466 | sv_type == SVt_PVAV ? '@' : |
467 | sv_type == SVt_PVHV ? '%' : '$', |
468 | name); |
469 | if (GvCV(*gvp)) |
470 | warn("(Did you mean &%s instead?)\n", name); |
a0d0e21e |
471 | stash = 0; |
4633a7c4 |
472 | } |
a0d0e21e |
473 | } |
85e6fe83 |
474 | } |
463ee0b2 |
475 | else |
476 | stash = curcop->cop_stash; |
477 | } |
478 | else |
479 | stash = defstash; |
480 | } |
481 | |
482 | /* By this point we should have a stash and a name */ |
483 | |
a0d0e21e |
484 | if (!stash) { |
485 | if (add) { |
486 | warn("Global symbol \"%s\" requires explicit package name", name); |
487 | ++error_count; |
488 | stash = curstash ? curstash : defstash; /* avoid core dumps */ |
489 | } |
490 | else |
491 | return Nullgv; |
492 | } |
493 | |
494 | if (!SvREFCNT(stash)) /* symbol table under destruction */ |
495 | return Nullgv; |
496 | |
79072805 |
497 | gvp = (GV**)hv_fetch(stash,name,len,add); |
498 | if (!gvp || *gvp == (GV*)&sv_undef) |
499 | return Nullgv; |
500 | gv = *gvp; |
501 | if (SvTYPE(gv) == SVt_PVGV) { |
a0d0e21e |
502 | if (add) { |
a5f75d66 |
503 | GvMULTI_on(gv); |
a0d0e21e |
504 | gv_init_sv(gv, sv_type); |
505 | } |
79072805 |
506 | return gv; |
507 | } |
93a17b20 |
508 | |
509 | /* Adding a new symbol */ |
510 | |
a0d0e21e |
511 | if (add & 4) |
512 | warn("Had to create %s unexpectedly", nambeg); |
463ee0b2 |
513 | gv_init(gv, stash, name, len, add & 2); |
a0d0e21e |
514 | gv_init_sv(gv, sv_type); |
93a17b20 |
515 | |
516 | /* set up magic where warranted */ |
517 | switch (*name) { |
a0d0e21e |
518 | case 'A': |
519 | if (strEQ(name, "ARGV")) { |
520 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; |
521 | } |
522 | break; |
523 | |
ed6116ce |
524 | case 'a': |
525 | case 'b': |
526 | if (len == 1) |
a5f75d66 |
527 | GvMULTI_on(gv); |
ed6116ce |
528 | break; |
a0d0e21e |
529 | case 'E': |
530 | if (strnEQ(name, "EXPORT", 6)) |
a5f75d66 |
531 | GvMULTI_on(gv); |
a0d0e21e |
532 | break; |
463ee0b2 |
533 | case 'I': |
534 | if (strEQ(name, "ISA")) { |
535 | AV* av = GvAVn(gv); |
a5f75d66 |
536 | GvMULTI_on(gv); |
a0d0e21e |
537 | sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0); |
538 | if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1) |
85e6fe83 |
539 | { |
a0d0e21e |
540 | char *pname; |
541 | av_push(av, newSVpv(pname = "NDBM_File",0)); |
dc437b57 |
542 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
543 | av_push(av, newSVpv(pname = "DB_File",0)); |
dc437b57 |
544 | gv_stashpvn(pname, 7, TRUE); |
a0d0e21e |
545 | av_push(av, newSVpv(pname = "GDBM_File",0)); |
dc437b57 |
546 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
547 | av_push(av, newSVpv(pname = "SDBM_File",0)); |
dc437b57 |
548 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
549 | av_push(av, newSVpv(pname = "ODBM_File",0)); |
dc437b57 |
550 | gv_stashpvn(pname, 9, TRUE); |
85e6fe83 |
551 | } |
463ee0b2 |
552 | } |
553 | break; |
a0d0e21e |
554 | #ifdef OVERLOAD |
555 | case 'O': |
556 | if (strEQ(name, "OVERLOAD")) { |
557 | HV* hv = GvHVn(gv); |
a5f75d66 |
558 | GvMULTI_on(gv); |
a0d0e21e |
559 | sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0); |
560 | } |
561 | break; |
562 | #endif /* OVERLOAD */ |
93a17b20 |
563 | case 'S': |
564 | if (strEQ(name, "SIG")) { |
565 | HV *hv; |
dc437b57 |
566 | I32 i; |
93a17b20 |
567 | siggv = gv; |
a5f75d66 |
568 | GvMULTI_on(siggv); |
93a17b20 |
569 | hv = GvHVn(siggv); |
570 | hv_magic(hv, siggv, 'S'); |
dc437b57 |
571 | for(i=1;sig_name[i];i++) { |
572 | SV ** init; |
573 | init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1); |
574 | if(init) |
575 | sv_setsv(*init,&sv_undef); |
576 | psig_ptr[i] = 0; |
577 | psig_name[i] = 0; |
578 | } |
93a17b20 |
579 | /* initialize signal stack */ |
580 | signalstack = newAV(); |
93a17b20 |
581 | AvREAL_off(signalstack); |
a0d0e21e |
582 | av_extend(signalstack, 30); |
583 | av_fill(signalstack, 0); |
93a17b20 |
584 | } |
585 | break; |
586 | |
587 | case '&': |
463ee0b2 |
588 | if (len > 1) |
589 | break; |
93a17b20 |
590 | ampergv = gv; |
591 | sawampersand = TRUE; |
a0d0e21e |
592 | goto ro_magicalize; |
93a17b20 |
593 | |
594 | case '`': |
463ee0b2 |
595 | if (len > 1) |
596 | break; |
93a17b20 |
597 | leftgv = gv; |
598 | sawampersand = TRUE; |
a0d0e21e |
599 | goto ro_magicalize; |
93a17b20 |
600 | |
601 | case '\'': |
463ee0b2 |
602 | if (len > 1) |
603 | break; |
93a17b20 |
604 | rightgv = gv; |
605 | sawampersand = TRUE; |
a0d0e21e |
606 | goto ro_magicalize; |
93a17b20 |
607 | |
608 | case ':': |
463ee0b2 |
609 | if (len > 1) |
610 | break; |
93a17b20 |
611 | sv_setpv(GvSV(gv),chopset); |
612 | goto magicalize; |
613 | |
93a17b20 |
614 | case '#': |
a0d0e21e |
615 | case '*': |
616 | if (dowarn && len == 1 && sv_type == SVt_PV) |
617 | warn("Use of $%s is deprecated", name); |
618 | /* FALL THROUGH */ |
619 | case '[': |
620 | case '!': |
93a17b20 |
621 | case '?': |
622 | case '^': |
623 | case '~': |
624 | case '=': |
625 | case '-': |
626 | case '%': |
627 | case '.': |
93a17b20 |
628 | case '(': |
629 | case ')': |
630 | case '<': |
631 | case '>': |
632 | case ',': |
633 | case '\\': |
634 | case '/': |
93a17b20 |
635 | case '|': |
748a9306 |
636 | case '\001': |
93a17b20 |
637 | case '\004': |
ad8898e0 |
638 | case '\005': |
748a9306 |
639 | case '\006': |
a0d0e21e |
640 | case '\010': |
ad8898e0 |
641 | case '\017': |
93a17b20 |
642 | case '\t': |
643 | case '\020': |
644 | case '\024': |
645 | case '\027': |
463ee0b2 |
646 | if (len > 1) |
647 | break; |
648 | goto magicalize; |
649 | |
a0d0e21e |
650 | case '+': |
463ee0b2 |
651 | case '1': |
652 | case '2': |
653 | case '3': |
654 | case '4': |
655 | case '5': |
656 | case '6': |
657 | case '7': |
658 | case '8': |
659 | case '9': |
a0d0e21e |
660 | ro_magicalize: |
661 | SvREADONLY_on(GvSV(gv)); |
93a17b20 |
662 | magicalize: |
463ee0b2 |
663 | sv_magic(GvSV(gv), (SV*)gv, 0, name, len); |
93a17b20 |
664 | break; |
665 | |
666 | case '\014': |
463ee0b2 |
667 | if (len > 1) |
668 | break; |
93a17b20 |
669 | sv_setpv(GvSV(gv),"\f"); |
670 | formfeed = GvSV(gv); |
671 | break; |
672 | case ';': |
463ee0b2 |
673 | if (len > 1) |
674 | break; |
93a17b20 |
675 | sv_setpv(GvSV(gv),"\034"); |
676 | break; |
463ee0b2 |
677 | case ']': |
678 | if (len == 1) { |
93a17b20 |
679 | SV *sv; |
680 | sv = GvSV(gv); |
681 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e |
682 | sv_setpv(sv, patchlevel); |
93a17b20 |
683 | } |
684 | break; |
79072805 |
685 | } |
93a17b20 |
686 | return gv; |
79072805 |
687 | } |
688 | |
689 | void |
690 | gv_fullname(sv,gv) |
691 | SV *sv; |
692 | GV *gv; |
693 | { |
694 | HV *hv = GvSTASH(gv); |
695 | |
696 | if (!hv) |
697 | return; |
698 | sv_setpv(sv, sv == (SV*)gv ? "*" : ""); |
699 | sv_catpv(sv,HvNAME(hv)); |
463ee0b2 |
700 | sv_catpvn(sv,"::", 2); |
79072805 |
701 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); |
702 | } |
703 | |
704 | void |
705 | gv_efullname(sv,gv) |
706 | SV *sv; |
707 | GV *gv; |
708 | { |
709 | GV* egv = GvEGV(gv); |
748a9306 |
710 | HV *hv; |
711 | |
712 | if (!egv) |
713 | egv = gv; |
714 | hv = GvSTASH(egv); |
79072805 |
715 | if (!hv) |
716 | return; |
748a9306 |
717 | |
79072805 |
718 | sv_setpv(sv, sv == (SV*)gv ? "*" : ""); |
719 | sv_catpv(sv,HvNAME(hv)); |
463ee0b2 |
720 | sv_catpvn(sv,"::", 2); |
79072805 |
721 | sv_catpvn(sv,GvNAME(egv),GvNAMELEN(egv)); |
722 | } |
723 | |
724 | IO * |
725 | newIO() |
726 | { |
727 | IO *io; |
8990e307 |
728 | GV *iogv; |
729 | |
730 | io = (IO*)NEWSV(0,0); |
a0d0e21e |
731 | sv_upgrade((SV *)io,SVt_PVIO); |
8990e307 |
732 | SvREFCNT(io) = 1; |
733 | SvOBJECT_on(io); |
dc437b57 |
734 | iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV); |
8990e307 |
735 | SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv)); |
79072805 |
736 | return io; |
737 | } |
738 | |
739 | void |
463ee0b2 |
740 | gv_check(stash) |
741 | HV* stash; |
79072805 |
742 | { |
743 | register HE *entry; |
744 | register I32 i; |
745 | register GV *gv; |
463ee0b2 |
746 | HV *hv; |
a0d0e21e |
747 | GV *filegv; |
463ee0b2 |
748 | |
8990e307 |
749 | if (!HvARRAY(stash)) |
750 | return; |
a0d0e21e |
751 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
dc437b57 |
752 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
753 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && |
754 | (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv)) |
a0d0e21e |
755 | { |
756 | if (hv != defstash) |
757 | gv_check(hv); /* nested package */ |
758 | } |
dc437b57 |
759 | else if (isALPHA(*HeKEY(entry))) { |
760 | gv = (GV*)HeVAL(entry); |
a5f75d66 |
761 | if (GvMULTI(gv)) |
463ee0b2 |
762 | continue; |
763 | curcop->cop_line = GvLINE(gv); |
a0d0e21e |
764 | filegv = GvFILEGV(gv); |
765 | curcop->cop_filegv = filegv; |
a5f75d66 |
766 | if (filegv && GvMULTI(filegv)) /* Filename began with slash */ |
8990e307 |
767 | continue; |
dc437b57 |
768 | warn("Name \"%s::%s\" used only once: possible typo", |
a0d0e21e |
769 | HvNAME(stash), GvNAME(gv)); |
463ee0b2 |
770 | } |
79072805 |
771 | } |
772 | } |
773 | } |
774 | |
775 | GV * |
a0d0e21e |
776 | newGVgen(pack) |
777 | char *pack; |
79072805 |
778 | { |
a0d0e21e |
779 | (void)sprintf(tokenbuf,"%s::_GEN_%ld",pack,(long)gensym++); |
85e6fe83 |
780 | return gv_fetchpv(tokenbuf,TRUE, SVt_PVGV); |
79072805 |
781 | } |
782 | |
783 | /* hopefully this is only called on local symbol table entries */ |
784 | |
785 | GP* |
786 | gp_ref(gp) |
787 | GP* gp; |
788 | { |
789 | gp->gp_refcnt++; |
790 | return gp; |
791 | |
792 | } |
793 | |
794 | void |
795 | gp_free(gv) |
796 | GV* gv; |
797 | { |
79072805 |
798 | GP* gp; |
377b8fbc |
799 | CV* cv; |
79072805 |
800 | |
801 | if (!gv || !(gp = GvGP(gv))) |
802 | return; |
803 | if (gp->gp_refcnt == 0) { |
804 | warn("Attempt to free unreferenced glob pointers"); |
805 | return; |
806 | } |
748a9306 |
807 | if (--gp->gp_refcnt > 0) { |
808 | if (gp->gp_egv == gv) |
809 | gp->gp_egv = 0; |
79072805 |
810 | return; |
748a9306 |
811 | } |
79072805 |
812 | |
8990e307 |
813 | SvREFCNT_dec(gp->gp_sv); |
814 | SvREFCNT_dec(gp->gp_av); |
815 | SvREFCNT_dec(gp->gp_hv); |
377b8fbc |
816 | SvREFCNT_dec(gp->gp_io); |
8990e307 |
817 | if ((cv = gp->gp_cv) && !GvCVGEN(gv)) |
818 | SvREFCNT_dec(cv); |
748a9306 |
819 | SvREFCNT_dec(gp->gp_form); |
820 | |
79072805 |
821 | Safefree(gp); |
822 | GvGP(gv) = 0; |
823 | } |
824 | |
825 | #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286)) |
826 | #define MICROPORT |
827 | #endif |
828 | |
829 | #ifdef MICROPORT /* Microport 2.4 hack */ |
830 | AV *GvAVn(gv) |
831 | register GV *gv; |
832 | { |
833 | if (GvGP(gv)->gp_av) |
834 | return GvGP(gv)->gp_av; |
835 | else |
836 | return GvGP(gv_AVadd(gv))->gp_av; |
837 | } |
838 | |
839 | HV *GvHVn(gv) |
840 | register GV *gv; |
841 | { |
842 | if (GvGP(gv)->gp_hv) |
843 | return GvGP(gv)->gp_hv; |
844 | else |
845 | return GvGP(gv_HVadd(gv))->gp_hv; |
846 | } |
847 | #endif /* Microport 2.4 hack */ |
a0d0e21e |
848 | |
849 | #ifdef OVERLOAD |
850 | /* Updates and caches the CV's */ |
851 | |
852 | bool |
853 | Gv_AMupdate(stash) |
854 | HV* stash; |
855 | { |
856 | GV** gvp; |
857 | HV* hv; |
858 | GV* gv; |
859 | CV* cv; |
860 | MAGIC* mg=mg_find((SV*)stash,'c'); |
748a9306 |
861 | AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL; |
a0d0e21e |
862 | |
863 | if (mg && (amtp=((AMT*)(mg->mg_ptr)))->was_ok_am == amagic_generation && |
864 | amtp->was_ok_sub == sub_generation) |
865 | return HV_AMAGIC(stash)? TRUE: FALSE; |
866 | gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); |
748a9306 |
867 | if (amtp && amtp->table) { |
868 | int i; |
869 | for (i=1;i<NofAMmeth*2;i++) { |
870 | if (amtp->table[i]) { |
871 | SvREFCNT_dec(amtp->table[i]); |
872 | } |
873 | } |
874 | } |
a0d0e21e |
875 | sv_unmagic((SV*)stash, 'c'); |
876 | |
877 | DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) ); |
878 | |
879 | if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) { |
880 | int filled=0; |
881 | int i; |
882 | char *cp; |
883 | AMT amt; |
884 | SV* sv; |
885 | SV** svp; |
dc437b57 |
886 | GV** gvp; |
a0d0e21e |
887 | |
888 | /* if (*(svp)==(SV*)amagic_generation && *(svp+1)==(SV*)sub_generation) { |
889 | DEBUG_o( deb("Overload magic in package %s up-to-date\n",HvNAME(stash)) |
890 | ); |
891 | return HV_AMAGIC(stash)? TRUE: FALSE; |
892 | }*/ |
893 | |
894 | amt.was_ok_am=amagic_generation; |
895 | amt.was_ok_sub=sub_generation; |
896 | amt.fallback=AMGfallNO; |
897 | |
898 | /* Work with "fallback" key, which we assume to be first in AMG_names */ |
899 | |
900 | if ((cp=((char**)(*AMG_names))[0]) && |
901 | (svp=(SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) { |
902 | if (SvTRUE(sv)) amt.fallback=AMGfallYES; |
903 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; |
904 | } |
905 | |
906 | for (i=1;i<NofAMmeth*2;i++) { |
907 | cv=0; |
908 | |
909 | if ( (cp=((char**)(*AMG_names))[i]) ) { |
910 | svp=(SV**)hv_fetch(hv,cp,strlen(cp),FALSE); |
dc437b57 |
911 | if (svp && ((sv = *svp) != &sv_undef)) { |
a0d0e21e |
912 | switch (SvTYPE(sv)) { |
913 | default: |
914 | if (!SvROK(sv)) { |
915 | if (!SvOK(sv)) break; |
748a9306 |
916 | gv = gv_fetchmethod(stash, SvPV(sv, na)); |
a0d0e21e |
917 | if (gv) cv = GvCV(gv); |
918 | break; |
919 | } |
920 | cv = (CV*)SvRV(sv); |
921 | if (SvTYPE(cv) == SVt_PVCV) |
922 | break; |
923 | /* FALL THROUGH */ |
924 | case SVt_PVHV: |
925 | case SVt_PVAV: |
926 | die("Not a subroutine reference in %%OVERLOAD"); |
927 | return FALSE; |
928 | case SVt_PVCV: |
929 | cv = (CV*)sv; |
930 | break; |
931 | case SVt_PVGV: |
932 | if (!(cv = GvCV((GV*)sv))) |
933 | cv = sv_2cv(sv, &stash, &gv, TRUE); |
934 | break; |
935 | } |
936 | if (cv) filled=1; |
937 | else { |
06b43eb7 |
938 | die("Method for operation %s not found in package %.256s during blessing\n", |
a0d0e21e |
939 | cp,HvNAME(stash)); |
940 | return FALSE; |
941 | } |
942 | } |
943 | } |
748a9306 |
944 | amt.table[i]=(CV*)SvREFCNT_inc(cv); |
a0d0e21e |
945 | } |
946 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(amt)); |
947 | if (filled) { |
948 | /* HV_badAMAGIC_off(stash);*/ |
949 | HV_AMAGIC_on(stash); |
950 | return TRUE; |
951 | } |
952 | } |
953 | /*HV_badAMAGIC_off(stash);*/ |
954 | HV_AMAGIC_off(stash); |
955 | return FALSE; |
956 | } |
957 | |
958 | /* During call to this subroutine stack can be reallocated. It is |
959 | * advised to call SPAGAIN macro in your code after call */ |
960 | |
961 | SV* |
962 | amagic_call(left,right,method,flags) |
963 | SV* left; |
964 | SV* right; |
965 | int method; |
966 | int flags; |
967 | { |
968 | MAGIC *mg; |
969 | CV *cv; |
970 | CV **cvp=NULL, **ocvp=NULL; |
971 | AMT *amtp, *oamtp; |
972 | int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0; |
748a9306 |
973 | int postpr=0, inc_dec_ass=0, assignshift=assign?1:0; |
a0d0e21e |
974 | HV* stash; |
975 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) |
976 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c')) |
977 | && (ocvp = cvp = ((oamtp=amtp=(AMT*)mg->mg_ptr)->table)) |
748a9306 |
978 | && ((cv = cvp[off=method+assignshift]) |
979 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to |
980 | * usual method */ |
981 | (fl = 1, cv = cvp[off=method])))) { |
a0d0e21e |
982 | lr = -1; /* Call method for left argument */ |
983 | } else { |
984 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { |
985 | int logic; |
986 | |
987 | /* look for substituted methods */ |
988 | switch (method) { |
989 | case inc_amg: |
748a9306 |
990 | if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1)) |
a0d0e21e |
991 | || ((cv = cvp[off=add_amg]) && (postpr=1))) { |
992 | right = &sv_yes; lr = -1; assign = 1; |
993 | } |
994 | break; |
995 | case dec_amg: |
748a9306 |
996 | if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1)) |
a0d0e21e |
997 | || ((cv = cvp[off=subtr_amg]) && (postpr=1))) { |
998 | right = &sv_yes; lr = -1; assign = 1; |
999 | } |
1000 | break; |
1001 | case bool__amg: |
1002 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); |
1003 | break; |
1004 | case numer_amg: |
1005 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); |
1006 | break; |
1007 | case string_amg: |
1008 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); |
1009 | break; |
dc437b57 |
1010 | case not_amg: |
1011 | (void)((cv = cvp[off=bool__amg]) |
1012 | || (cv = cvp[off=numer_amg]) |
1013 | || (cv = cvp[off=string_amg])); |
1014 | postpr = 1; |
1015 | break; |
748a9306 |
1016 | case copy_amg: |
1017 | { |
1018 | SV* ref=SvRV(left); |
1019 | if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { /* Just to be |
1020 | * extra |
1021 | * causious, |
1022 | * maybe in some |
1023 | * additional |
1024 | * cases sv_setsv |
1025 | * is safe too */ |
1026 | SV* newref = newSVsv(ref); |
1027 | SvOBJECT_on(newref); |
1028 | SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref)); |
1029 | return newref; |
1030 | } |
1031 | } |
1032 | break; |
a0d0e21e |
1033 | case abs_amg: |
748a9306 |
1034 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e |
1035 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
748a9306 |
1036 | SV* nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e |
1037 | if (off1==lt_amg) { |
748a9306 |
1038 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e |
1039 | lt_amg,AMGf_noright); |
1040 | logic = SvTRUE(lessp); |
1041 | } else { |
748a9306 |
1042 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e |
1043 | ncmp_amg,AMGf_noright); |
1044 | logic = (SvNV(lessp) < 0); |
1045 | } |
1046 | if (logic) { |
1047 | if (off==subtr_amg) { |
1048 | right = left; |
748a9306 |
1049 | left = nullsv; |
a0d0e21e |
1050 | lr = 1; |
1051 | } |
1052 | } else { |
1053 | return left; |
1054 | } |
1055 | } |
1056 | break; |
1057 | case neg_amg: |
1058 | if (cv = cvp[off=subtr_amg]) { |
1059 | right = left; |
1060 | left = sv_2mortal(newSViv(0)); |
1061 | lr = 1; |
1062 | } |
1063 | break; |
1064 | default: |
1065 | goto not_found; |
1066 | } |
1067 | if (!cv) goto not_found; |
1068 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) |
1069 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c')) |
1070 | && (cvp = ((amtp=(AMT*)mg->mg_ptr)->table)) |
1071 | && (cv = cvp[off=method])) { /* Method for right |
1072 | * argument found */ |
1073 | lr=1; |
748a9306 |
1074 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
4633a7c4 |
1075 | && (cvp=ocvp) && (lr = -1)) |
a0d0e21e |
1076 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
1077 | && !(flags & AMGf_unary)) { |
1078 | /* We look for substitution for |
1079 | * comparison operations and |
1080 | * concatendation */ |
1081 | if (method==concat_amg || method==concat_ass_amg |
1082 | || method==repeat_amg || method==repeat_ass_amg) { |
1083 | return NULL; /* Delegate operation to string conversion */ |
1084 | } |
1085 | off = -1; |
1086 | switch (method) { |
1087 | case lt_amg: |
1088 | case le_amg: |
1089 | case gt_amg: |
1090 | case ge_amg: |
1091 | case eq_amg: |
1092 | case ne_amg: |
1093 | postpr = 1; off=ncmp_amg; break; |
1094 | case slt_amg: |
1095 | case sle_amg: |
1096 | case sgt_amg: |
1097 | case sge_amg: |
1098 | case seq_amg: |
1099 | case sne_amg: |
1100 | postpr = 1; off=scmp_amg; break; |
1101 | } |
1102 | if (off != -1) cv = cvp[off]; |
1103 | if (!cv) { |
1104 | goto not_found; |
1105 | } |
1106 | } else { |
1107 | not_found: /* No method found, either report or die */ |
1108 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
1109 | notfound = 1; lr = -1; |
1110 | } else if (cvp && (cv=cvp[nomethod_amg])) { |
1111 | notfound = 1; lr = 1; |
1112 | } else { |
748a9306 |
1113 | if (off==-1) off=method; |
06b43eb7 |
1114 | sprintf(buf, "Operation `%s': no method found,\n\tleft argument %s%.256s,\n\tright argument %s%.256s", |
c07a80fd |
1115 | ((char**)AMG_names)[method + assignshift], |
a0d0e21e |
1116 | SvAMAGIC(left)? |
1117 | "in overloaded package ": |
1118 | "has no overloaded magic", |
1119 | SvAMAGIC(left)? |
1120 | HvNAME(SvSTASH(SvRV(left))): |
1121 | "", |
1122 | SvAMAGIC(right)? |
1123 | "in overloaded package ": |
1124 | "has no overloaded magic", |
1125 | SvAMAGIC(right)? |
1126 | HvNAME(SvSTASH(SvRV(right))): |
1127 | ""); |
1128 | if (amtp && amtp->fallback >= AMGfallYES) { |
06b43eb7 |
1129 | DEBUG_o( deb(buf) ); |
a0d0e21e |
1130 | } else { |
06b43eb7 |
1131 | die(buf); |
a0d0e21e |
1132 | } |
1133 | return NULL; |
1134 | } |
1135 | } |
1136 | } |
1137 | if (!notfound) { |
06b43eb7 |
1138 | DEBUG_o( deb("Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %.256s%s\n", |
a0d0e21e |
1139 | ((char**)AMG_names)[off], |
748a9306 |
1140 | method+assignshift==off? "" : |
1141 | " (initially `", |
1142 | method+assignshift==off? "" : |
1143 | ((char**)AMG_names)[method+assignshift], |
1144 | method+assignshift==off? "" : "')", |
1145 | flags & AMGf_unary? "" : |
1146 | lr==1 ? " for right argument": " for left argument", |
1147 | flags & AMGf_unary? " for argument" : "", |
a0d0e21e |
1148 | HvNAME(stash), |
1149 | fl? ",\n\tassignment variant used": "") ); |
748a9306 |
1150 | /* Since we use shallow copy during assignment, we need |
1151 | * to dublicate the contents, probably calling user-supplied |
1152 | * version of copy operator |
1153 | */ |
c07a80fd |
1154 | if ((method + assignshift==off |
748a9306 |
1155 | && (assign || method==inc_amg || method==dec_amg)) |
1156 | || inc_dec_ass) RvDEEPCP(left); |
a0d0e21e |
1157 | } |
1158 | { |
1159 | dSP; |
1160 | BINOP myop; |
1161 | SV* res; |
1162 | |
1163 | Zero(&myop, 1, BINOP); |
1164 | myop.op_last = (OP *) &myop; |
1165 | myop.op_next = Nullop; |
1166 | myop.op_flags = OPf_KNOW|OPf_STACKED; |
1167 | |
1168 | ENTER; |
1169 | SAVESPTR(op); |
1170 | op = (OP *) &myop; |
dc437b57 |
1171 | if (perldb && curstash != debstash) |
1172 | op->op_private |= OPpENTERSUB_DB; |
a0d0e21e |
1173 | PUTBACK; |
1174 | pp_pushmark(); |
1175 | |
1176 | EXTEND(sp, notfound + 5); |
1177 | PUSHs(lr>0? right: left); |
1178 | PUSHs(lr>0? left: right); |
1179 | PUSHs( assign ? &sv_undef : (lr>0? &sv_yes: &sv_no)); |
1180 | if (notfound) { |
c07a80fd |
1181 | PUSHs( sv_2mortal(newSVpv(((char**)AMG_names)[method + assignshift],0)) ); |
a0d0e21e |
1182 | } |
1183 | PUSHs((SV*)cv); |
1184 | PUTBACK; |
1185 | |
1186 | if (op = pp_entersub()) |
ad8898e0 |
1187 | runops(); |
a0d0e21e |
1188 | LEAVE; |
1189 | SPAGAIN; |
1190 | |
1191 | res=POPs; |
1192 | PUTBACK; |
1193 | |
1194 | if (notfound) { |
1195 | /* sv_2mortal(res); */ |
1196 | return NULL; |
1197 | } |
1198 | |
1199 | if (postpr) { |
1200 | int ans; |
1201 | switch (method) { |
1202 | case le_amg: |
1203 | case sle_amg: |
1204 | ans=SvIV(res)<=0; break; |
1205 | case lt_amg: |
1206 | case slt_amg: |
1207 | ans=SvIV(res)<0; break; |
1208 | case ge_amg: |
1209 | case sge_amg: |
1210 | ans=SvIV(res)>=0; break; |
1211 | case gt_amg: |
1212 | case sgt_amg: |
1213 | ans=SvIV(res)>0; break; |
1214 | case eq_amg: |
1215 | case seq_amg: |
1216 | ans=SvIV(res)==0; break; |
1217 | case ne_amg: |
1218 | case sne_amg: |
1219 | ans=SvIV(res)!=0; break; |
1220 | case inc_amg: |
1221 | case dec_amg: |
1222 | SvSetSV(left,res); return res; break; |
dc437b57 |
1223 | case not_amg: |
1224 | ans=!SvOK(res); break; |
a0d0e21e |
1225 | } |
1226 | return ans? &sv_yes: &sv_no; |
748a9306 |
1227 | } else if (method==copy_amg) { |
1228 | if (!SvROK(res)) { |
1229 | die("Copy method did not return a reference"); |
1230 | } |
1231 | return SvREFCNT_inc(SvRV(res)); |
a0d0e21e |
1232 | } else { |
1233 | return res; |
1234 | } |
1235 | } |
1236 | } |
1237 | #endif /* OVERLOAD */ |