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]; |
8ebc5c01 |
62 | STRLEN tmplen; |
79072805 |
63 | GV *gv; |
64 | |
8ebc5c01 |
65 | sprintf(tmpbuf, "_<%s", name); |
66 | tmplen = strlen(tmpbuf); |
67 | gv = *(GV**)hv_fetch(defstash, tmpbuf, tmplen, TRUE); |
68 | if (!isGV(gv)) |
69 | gv_init(gv, defstash, tmpbuf, tmplen, FALSE); |
79072805 |
70 | sv_setpv(GvSV(gv), name); |
8ebc5c01 |
71 | if (*name == '/' && (instr(name, "/lib/") || instr(name, ".pm"))) |
a5f75d66 |
72 | GvMULTI_on(gv); |
79072805 |
73 | if (perldb) |
93a17b20 |
74 | hv_magic(GvHVn(gv_AVadd(gv)), gv, 'L'); |
79072805 |
75 | return gv; |
76 | } |
77 | |
463ee0b2 |
78 | void |
79 | gv_init(gv, stash, name, len, multi) |
80 | GV *gv; |
81 | HV *stash; |
82 | char *name; |
83 | STRLEN len; |
84 | int multi; |
85 | { |
86 | register GP *gp; |
87 | |
dc437b57 |
88 | sv_upgrade((SV*)gv, SVt_PVGV); |
463ee0b2 |
89 | if (SvLEN(gv)) |
90 | Safefree(SvPVX(gv)); |
44a8e56a |
91 | Newz(602, gp, 1, GP); |
8990e307 |
92 | GvGP(gv) = gp_ref(gp); |
463ee0b2 |
93 | GvSV(gv) = NEWSV(72,0); |
94 | GvLINE(gv) = curcop->cop_line; |
8990e307 |
95 | GvFILEGV(gv) = curcop->cop_filegv; |
463ee0b2 |
96 | GvEGV(gv) = gv; |
97 | sv_magic((SV*)gv, (SV*)gv, '*', name, len); |
98 | GvSTASH(gv) = stash; |
a0d0e21e |
99 | GvNAME(gv) = savepvn(name, len); |
463ee0b2 |
100 | GvNAMELEN(gv) = len; |
101 | if (multi) |
a5f75d66 |
102 | GvMULTI_on(gv); |
463ee0b2 |
103 | } |
104 | |
a0d0e21e |
105 | static void |
106 | gv_init_sv(gv, sv_type) |
107 | GV* gv; |
108 | I32 sv_type; |
109 | { |
110 | switch (sv_type) { |
111 | case SVt_PVIO: |
112 | (void)GvIOn(gv); |
113 | break; |
114 | case SVt_PVAV: |
115 | (void)GvAVn(gv); |
116 | break; |
117 | case SVt_PVHV: |
118 | (void)GvHVn(gv); |
119 | break; |
120 | } |
121 | } |
122 | |
79072805 |
123 | GV * |
a0d0e21e |
124 | gv_fetchmeth(stash, name, len, level) |
79072805 |
125 | HV* stash; |
126 | char* name; |
463ee0b2 |
127 | STRLEN len; |
a0d0e21e |
128 | I32 level; |
79072805 |
129 | { |
130 | AV* av; |
463ee0b2 |
131 | GV* topgv; |
79072805 |
132 | GV* gv; |
463ee0b2 |
133 | GV** gvp; |
a0d0e21e |
134 | HV* lastchance; |
748a9306 |
135 | CV* cv; |
a0d0e21e |
136 | |
137 | if (!stash) |
138 | return 0; |
44a8e56a |
139 | if ((level > 100) || (level < -100)) |
a0d0e21e |
140 | croak("Recursive inheritance detected"); |
463ee0b2 |
141 | |
463ee0b2 |
142 | DEBUG_o( deb("Looking for method %s in package %s\n",name,HvNAME(stash)) ); |
44a8e56a |
143 | |
144 | gvp = (GV**)hv_fetch(stash, name, len, (level >= 0)); |
145 | if (!gvp) |
146 | topgv = Nullgv; |
147 | else { |
148 | topgv = *gvp; |
149 | if (SvTYPE(topgv) != SVt_PVGV) |
150 | gv_init(topgv, stash, name, len, TRUE); |
151 | if (cv = GvCV(topgv)) { |
152 | /* If genuine method or valid cache entry, use it */ |
153 | if (!GvCVGEN(topgv) || GvCVGEN(topgv) >= sub_generation) |
7a4c00b4 |
154 | return topgv; |
44a8e56a |
155 | /* Stale cached entry: junk it */ |
156 | SvREFCNT_dec(cv); |
157 | GvCV(topgv) = cv = Nullcv; |
158 | GvCVGEN(topgv) = 0; |
748a9306 |
159 | } |
463ee0b2 |
160 | } |
79072805 |
161 | |
162 | gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); |
163 | if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) { |
164 | SV** svp = AvARRAY(av); |
165 | I32 items = AvFILL(av) + 1; |
166 | while (items--) { |
79072805 |
167 | SV* sv = *svp++; |
a0d0e21e |
168 | HV* basestash = gv_stashsv(sv, FALSE); |
9bbf4081 |
169 | if (!basestash) { |
79072805 |
170 | if (dowarn) |
a0d0e21e |
171 | warn("Can't locate package %s for @%s::ISA", |
463ee0b2 |
172 | SvPVX(sv), HvNAME(stash)); |
79072805 |
173 | continue; |
174 | } |
44a8e56a |
175 | gv = gv_fetchmeth(basestash, name, len, |
176 | (level >= 0) ? level + 1 : level - 1); |
177 | if (gv) |
178 | goto gotcha; |
79072805 |
179 | } |
180 | } |
a0d0e21e |
181 | |
44a8e56a |
182 | if (level == 0 || level == -1) { |
dc437b57 |
183 | if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) { |
44a8e56a |
184 | if (gv = gv_fetchmeth(lastchance, name, len, |
185 | (level >= 0) ? level + 1 : level - 1)) { |
186 | gotcha: |
187 | /* Use topgv for cache only if it has no synonyms */ |
188 | if (topgv && GvREFCNT(topgv) == 1) { |
189 | if (cv = GvCV(topgv)) |
190 | SvREFCNT_dec(cv); |
191 | GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv)); |
192 | GvCVGEN(topgv) = sub_generation; |
193 | } |
a0d0e21e |
194 | return gv; |
195 | } |
196 | } |
197 | } |
198 | |
79072805 |
199 | return 0; |
200 | } |
201 | |
202 | GV * |
463ee0b2 |
203 | gv_fetchmethod(stash, name) |
204 | HV* stash; |
205 | char* name; |
206 | { |
207 | register char *nend; |
a0d0e21e |
208 | char *nsplit = 0; |
209 | GV* gv; |
463ee0b2 |
210 | |
211 | for (nend = name; *nend; nend++) { |
a0d0e21e |
212 | if (*nend == ':' || *nend == '\'') |
213 | nsplit = nend; |
214 | } |
215 | if (nsplit) { |
216 | char ch; |
217 | char *origname = name; |
218 | name = nsplit + 1; |
219 | ch = *nsplit; |
220 | if (*nsplit == ':') |
221 | --nsplit; |
222 | *nsplit = '\0'; |
4633a7c4 |
223 | if (strEQ(origname,"SUPER")) { |
224 | /* Degenerate case ->SUPER::method should really lookup in original stash */ |
37120919 |
225 | SV *tmpstr = sv_2mortal(newSVpv(HvNAME(curcop->cop_stash),0)); |
4633a7c4 |
226 | sv_catpvn(tmpstr, "::SUPER", 7); |
dc437b57 |
227 | stash = gv_stashpvn(SvPVX(tmpstr),SvCUR(tmpstr),TRUE); |
4633a7c4 |
228 | *nsplit = ch; |
229 | DEBUG_o( deb("Treating %s as %s::%s\n",origname,HvNAME(stash),name) ); |
230 | } else { |
dc437b57 |
231 | stash = gv_stashpvn(origname, nsplit - origname, TRUE); |
4633a7c4 |
232 | *nsplit = ch; |
233 | } |
a0d0e21e |
234 | } |
235 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
4633a7c4 |
236 | |
237 | if (!gv) { |
238 | /* Failed obvious case - look for SUPER as last element of stash's name */ |
239 | char *packname = HvNAME(stash); |
240 | STRLEN len = strlen(packname); |
760ac839 |
241 | if (len >= 7 && strEQ(packname+len-7,"::SUPER")) { |
4633a7c4 |
242 | /* Now look for @.*::SUPER::ISA */ |
243 | GV** gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); |
760ac839 |
244 | len -= 7; |
4633a7c4 |
245 | if (!gvp || (gv = *gvp) == (GV*)&sv_undef || !GvAV(gv)) { |
246 | /* No @ISA in package ending in ::SUPER - drop suffix |
247 | and see if there is an @ISA there |
248 | */ |
249 | HV *basestash; |
dc437b57 |
250 | char ch = packname[len]; |
4633a7c4 |
251 | AV *av; |
dc437b57 |
252 | packname[len] = '\0'; |
253 | basestash = gv_stashpvn(packname, len, TRUE); |
254 | packname[len] = ch; |
4633a7c4 |
255 | gvp = (GV**)hv_fetch(basestash,"ISA",3,FALSE); |
256 | if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) { |
257 | /* Okay found @ISA after dropping the SUPER, alias it */ |
258 | SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0)); |
259 | sv_catpvn(tmpstr, "::ISA", 5); |
260 | gv = gv_fetchpv(SvPV(tmpstr,na),TRUE,SVt_PVGV); |
261 | if (gv) { |
262 | GvAV(gv) = (AV*)SvREFCNT_inc(av); |
263 | /* ... and re-try lookup */ |
264 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
265 | } else { |
266 | croak("Cannot create %s::ISA",HvNAME(stash)); |
267 | } |
268 | } |
269 | } |
270 | } |
271 | } |
272 | |
a0d0e21e |
273 | if (!gv) { |
702887b4 |
274 | if (strEQ(name,"import")) |
dc437b57 |
275 | gv = (GV*)&sv_yes; |
44a8e56a |
276 | else |
277 | gv = gv_autoload(stash, name, nend - name); |
463ee0b2 |
278 | } |
44a8e56a |
279 | |
280 | return gv; |
281 | } |
282 | |
283 | GV* |
284 | gv_autoload(stash, name, len) |
285 | HV* stash; |
286 | char* name; |
287 | STRLEN len; |
288 | { |
289 | static char autoload[] = "AUTOLOAD"; |
290 | static STRLEN autolen = 8; |
291 | GV* gv; |
292 | CV* cv; |
293 | HV* varstash; |
294 | GV* vargv; |
295 | SV* varsv; |
296 | |
297 | if (len == autolen && strnEQ(name, autoload, autolen)) |
298 | return Nullgv; |
299 | if (!(gv = gv_fetchmeth(stash, autoload, autolen, 0))) |
300 | return Nullgv; |
301 | cv = GvCV(gv); |
302 | |
303 | /* |
304 | * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name. |
305 | * The subroutine's original name may not be "AUTOLOAD", so we don't |
306 | * use that, but for lack of anything better we will use the sub's |
307 | * original package to look up $AUTOLOAD. |
308 | */ |
309 | varstash = GvSTASH(CvGV(cv)); |
310 | vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE); |
311 | if (!isGV(vargv)) |
312 | gv_init(vargv, varstash, autoload, autolen, FALSE); |
313 | varsv = GvSV(vargv); |
314 | sv_setpv(varsv, HvNAME(stash)); |
315 | sv_catpvn(varsv, "::", 2); |
316 | sv_catpvn(varsv, name, len); |
317 | SvTAINTED_off(varsv); |
a0d0e21e |
318 | return gv; |
319 | } |
320 | |
321 | HV* |
322 | gv_stashpv(name,create) |
323 | char *name; |
324 | I32 create; |
325 | { |
dc437b57 |
326 | return gv_stashpvn(name, strlen(name), create); |
327 | } |
328 | |
329 | HV* |
330 | gv_stashpvn(name,namelen,create) |
331 | char *name; |
332 | U32 namelen; |
333 | I32 create; |
334 | { |
335 | char tmpbuf[1203]; |
a0d0e21e |
336 | HV *stash; |
337 | GV *tmpgv; |
dc437b57 |
338 | |
339 | if (namelen > 1200) { |
340 | namelen = 1200; |
341 | #ifdef VMS |
342 | warn("Weird package name \"%s\" truncated", name); |
343 | #else |
ff0cee69 |
344 | warn("Weird package name \"%.*s...\" truncated", (int)namelen, name); |
dc437b57 |
345 | #endif |
346 | } |
347 | Copy(name,tmpbuf,namelen,char); |
348 | tmpbuf[namelen++] = ':'; |
349 | tmpbuf[namelen++] = ':'; |
350 | tmpbuf[namelen] = '\0'; |
a0d0e21e |
351 | tmpgv = gv_fetchpv(tmpbuf,create, SVt_PVHV); |
352 | if (!tmpgv) |
353 | return 0; |
354 | if (!GvHV(tmpgv)) |
355 | GvHV(tmpgv) = newHV(); |
356 | stash = GvHV(tmpgv); |
357 | if (!HvNAME(stash)) |
358 | HvNAME(stash) = savepv(name); |
359 | return stash; |
463ee0b2 |
360 | } |
361 | |
a0d0e21e |
362 | HV* |
363 | gv_stashsv(sv,create) |
364 | SV *sv; |
365 | I32 create; |
366 | { |
dc437b57 |
367 | register char *ptr; |
368 | STRLEN len; |
369 | ptr = SvPV(sv,len); |
370 | return gv_stashpvn(ptr, len, create); |
a0d0e21e |
371 | } |
372 | |
373 | |
463ee0b2 |
374 | GV * |
a0d0e21e |
375 | gv_fetchpv(nambeg,add,sv_type) |
463ee0b2 |
376 | char *nambeg; |
79072805 |
377 | I32 add; |
a0d0e21e |
378 | I32 sv_type; |
79072805 |
379 | { |
463ee0b2 |
380 | register char *name = nambeg; |
381 | register GV *gv = 0; |
79072805 |
382 | GV**gvp; |
79072805 |
383 | I32 len; |
384 | register char *namend; |
463ee0b2 |
385 | HV *stash = 0; |
79072805 |
386 | bool global = FALSE; |
85e6fe83 |
387 | char *tmpbuf; |
79072805 |
388 | |
c07a80fd |
389 | if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */ |
390 | name++; |
391 | |
79072805 |
392 | for (namend = name; *namend; namend++) { |
463ee0b2 |
393 | if ((*namend == '\'' && namend[1]) || |
394 | (*namend == ':' && namend[1] == ':')) |
395 | { |
463ee0b2 |
396 | if (!stash) |
397 | stash = defstash; |
dc437b57 |
398 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0d0e21e |
399 | return Nullgv; |
463ee0b2 |
400 | |
85e6fe83 |
401 | len = namend - name; |
402 | if (len > 0) { |
a0d0e21e |
403 | New(601, tmpbuf, len+3, char); |
404 | Copy(name, tmpbuf, len, char); |
405 | tmpbuf[len++] = ':'; |
406 | tmpbuf[len++] = ':'; |
407 | tmpbuf[len] = '\0'; |
463ee0b2 |
408 | gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); |
85e6fe83 |
409 | Safefree(tmpbuf); |
463ee0b2 |
410 | if (!gvp || *gvp == (GV*)&sv_undef) |
411 | return Nullgv; |
412 | gv = *gvp; |
85e6fe83 |
413 | |
463ee0b2 |
414 | if (SvTYPE(gv) == SVt_PVGV) |
a5f75d66 |
415 | GvMULTI_on(gv); |
a0d0e21e |
416 | else if (!add) |
417 | return Nullgv; |
463ee0b2 |
418 | else |
419 | gv_init(gv, stash, nambeg, namend - nambeg, (add & 2)); |
85e6fe83 |
420 | |
463ee0b2 |
421 | if (!(stash = GvHV(gv))) |
422 | stash = GvHV(gv) = newHV(); |
85e6fe83 |
423 | |
463ee0b2 |
424 | if (!HvNAME(stash)) |
a0d0e21e |
425 | HvNAME(stash) = savepvn(nambeg, namend - nambeg); |
463ee0b2 |
426 | } |
427 | |
428 | if (*namend == ':') |
429 | namend++; |
430 | namend++; |
431 | name = namend; |
432 | if (!*name) |
dc437b57 |
433 | return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE); |
79072805 |
434 | } |
79072805 |
435 | } |
a0d0e21e |
436 | len = namend - name; |
437 | if (!len) |
438 | len = 1; |
463ee0b2 |
439 | |
440 | /* No stash in name, so see how we can default */ |
441 | |
442 | if (!stash) { |
443 | if (isIDFIRST(*name)) { |
444 | if (isUPPER(*name)) { |
445 | if (*name > 'I') { |
446 | if (*name == 'S' && ( |
447 | strEQ(name, "SIG") || |
448 | strEQ(name, "STDIN") || |
449 | strEQ(name, "STDOUT") || |
450 | strEQ(name, "STDERR") )) |
451 | global = TRUE; |
452 | } |
453 | else if (*name > 'E') { |
454 | if (*name == 'I' && strEQ(name, "INC")) |
455 | global = TRUE; |
456 | } |
457 | else if (*name > 'A') { |
458 | if (*name == 'E' && strEQ(name, "ENV")) |
459 | global = TRUE; |
460 | } |
461 | else if (*name == 'A' && ( |
462 | strEQ(name, "ARGV") || |
463 | strEQ(name, "ARGVOUT") )) |
464 | global = TRUE; |
465 | } |
466 | else if (*name == '_' && !name[1]) |
467 | global = TRUE; |
468 | if (global) |
469 | stash = defstash; |
85e6fe83 |
470 | else if ((COP*)curcop == &compiling) { |
a0d0e21e |
471 | stash = curstash; |
748a9306 |
472 | if (add && (hints & HINT_STRICT_VARS) && |
473 | sv_type != SVt_PVCV && |
474 | sv_type != SVt_PVGV && |
4633a7c4 |
475 | sv_type != SVt_PVFM && |
c07a80fd |
476 | sv_type != SVt_PVIO && |
377b8fbc |
477 | !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) ) |
748a9306 |
478 | { |
4633a7c4 |
479 | gvp = (GV**)hv_fetch(stash,name,len,0); |
480 | if (!gvp || |
a5f75d66 |
481 | *gvp == (GV*)&sv_undef || |
482 | SvTYPE(*gvp) != SVt_PVGV) |
483 | { |
4633a7c4 |
484 | stash = 0; |
a5f75d66 |
485 | } |
486 | else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) || |
487 | sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) || |
488 | sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) ) |
4633a7c4 |
489 | { |
a5f75d66 |
490 | warn("Variable \"%c%s\" is not imported", |
4633a7c4 |
491 | sv_type == SVt_PVAV ? '@' : |
492 | sv_type == SVt_PVHV ? '%' : '$', |
493 | name); |
8ebc5c01 |
494 | if (GvCVu(*gvp)) |
4633a7c4 |
495 | warn("(Did you mean &%s instead?)\n", name); |
a0d0e21e |
496 | stash = 0; |
4633a7c4 |
497 | } |
a0d0e21e |
498 | } |
85e6fe83 |
499 | } |
463ee0b2 |
500 | else |
501 | stash = curcop->cop_stash; |
502 | } |
503 | else |
504 | stash = defstash; |
505 | } |
506 | |
507 | /* By this point we should have a stash and a name */ |
508 | |
a0d0e21e |
509 | if (!stash) { |
510 | if (add) { |
511 | warn("Global symbol \"%s\" requires explicit package name", name); |
512 | ++error_count; |
513 | stash = curstash ? curstash : defstash; /* avoid core dumps */ |
514 | } |
515 | else |
516 | return Nullgv; |
517 | } |
518 | |
519 | if (!SvREFCNT(stash)) /* symbol table under destruction */ |
520 | return Nullgv; |
521 | |
79072805 |
522 | gvp = (GV**)hv_fetch(stash,name,len,add); |
523 | if (!gvp || *gvp == (GV*)&sv_undef) |
524 | return Nullgv; |
525 | gv = *gvp; |
526 | if (SvTYPE(gv) == SVt_PVGV) { |
a0d0e21e |
527 | if (add) { |
a5f75d66 |
528 | GvMULTI_on(gv); |
a0d0e21e |
529 | gv_init_sv(gv, sv_type); |
530 | } |
79072805 |
531 | return gv; |
532 | } |
93a17b20 |
533 | |
534 | /* Adding a new symbol */ |
535 | |
a0d0e21e |
536 | if (add & 4) |
537 | warn("Had to create %s unexpectedly", nambeg); |
463ee0b2 |
538 | gv_init(gv, stash, name, len, add & 2); |
a0d0e21e |
539 | gv_init_sv(gv, sv_type); |
93a17b20 |
540 | |
541 | /* set up magic where warranted */ |
542 | switch (*name) { |
a0d0e21e |
543 | case 'A': |
544 | if (strEQ(name, "ARGV")) { |
545 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; |
546 | } |
547 | break; |
548 | |
ed6116ce |
549 | case 'a': |
550 | case 'b': |
551 | if (len == 1) |
a5f75d66 |
552 | GvMULTI_on(gv); |
ed6116ce |
553 | break; |
a0d0e21e |
554 | case 'E': |
555 | if (strnEQ(name, "EXPORT", 6)) |
a5f75d66 |
556 | GvMULTI_on(gv); |
a0d0e21e |
557 | break; |
463ee0b2 |
558 | case 'I': |
559 | if (strEQ(name, "ISA")) { |
560 | AV* av = GvAVn(gv); |
a5f75d66 |
561 | GvMULTI_on(gv); |
a0d0e21e |
562 | sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0); |
563 | if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1) |
85e6fe83 |
564 | { |
a0d0e21e |
565 | char *pname; |
566 | av_push(av, newSVpv(pname = "NDBM_File",0)); |
dc437b57 |
567 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
568 | av_push(av, newSVpv(pname = "DB_File",0)); |
dc437b57 |
569 | gv_stashpvn(pname, 7, TRUE); |
a0d0e21e |
570 | av_push(av, newSVpv(pname = "GDBM_File",0)); |
dc437b57 |
571 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
572 | av_push(av, newSVpv(pname = "SDBM_File",0)); |
dc437b57 |
573 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e |
574 | av_push(av, newSVpv(pname = "ODBM_File",0)); |
dc437b57 |
575 | gv_stashpvn(pname, 9, TRUE); |
85e6fe83 |
576 | } |
463ee0b2 |
577 | } |
578 | break; |
a0d0e21e |
579 | #ifdef OVERLOAD |
580 | case 'O': |
581 | if (strEQ(name, "OVERLOAD")) { |
582 | HV* hv = GvHVn(gv); |
a5f75d66 |
583 | GvMULTI_on(gv); |
a0d0e21e |
584 | sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0); |
585 | } |
586 | break; |
587 | #endif /* OVERLOAD */ |
93a17b20 |
588 | case 'S': |
589 | if (strEQ(name, "SIG")) { |
590 | HV *hv; |
dc437b57 |
591 | I32 i; |
93a17b20 |
592 | siggv = gv; |
a5f75d66 |
593 | GvMULTI_on(siggv); |
93a17b20 |
594 | hv = GvHVn(siggv); |
595 | hv_magic(hv, siggv, 'S'); |
dc437b57 |
596 | for(i=1;sig_name[i];i++) { |
597 | SV ** init; |
598 | init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1); |
599 | if(init) |
600 | sv_setsv(*init,&sv_undef); |
601 | psig_ptr[i] = 0; |
602 | psig_name[i] = 0; |
603 | } |
93a17b20 |
604 | /* initialize signal stack */ |
605 | signalstack = newAV(); |
93a17b20 |
606 | AvREAL_off(signalstack); |
a0d0e21e |
607 | av_extend(signalstack, 30); |
608 | av_fill(signalstack, 0); |
93a17b20 |
609 | } |
610 | break; |
611 | |
612 | case '&': |
463ee0b2 |
613 | if (len > 1) |
614 | break; |
93a17b20 |
615 | ampergv = gv; |
616 | sawampersand = TRUE; |
a0d0e21e |
617 | goto ro_magicalize; |
93a17b20 |
618 | |
619 | case '`': |
463ee0b2 |
620 | if (len > 1) |
621 | break; |
93a17b20 |
622 | leftgv = gv; |
623 | sawampersand = TRUE; |
a0d0e21e |
624 | goto ro_magicalize; |
93a17b20 |
625 | |
626 | case '\'': |
463ee0b2 |
627 | if (len > 1) |
628 | break; |
93a17b20 |
629 | rightgv = gv; |
630 | sawampersand = TRUE; |
a0d0e21e |
631 | goto ro_magicalize; |
93a17b20 |
632 | |
633 | case ':': |
463ee0b2 |
634 | if (len > 1) |
635 | break; |
93a17b20 |
636 | sv_setpv(GvSV(gv),chopset); |
637 | goto magicalize; |
638 | |
ff0cee69 |
639 | case '?': |
640 | if (len > 1) |
641 | break; |
642 | #ifdef COMPLEX_STATUS |
643 | sv_upgrade(GvSV(gv), SVt_PVLV); |
644 | #endif |
645 | goto magicalize; |
646 | |
93a17b20 |
647 | case '#': |
a0d0e21e |
648 | case '*': |
649 | if (dowarn && len == 1 && sv_type == SVt_PV) |
650 | warn("Use of $%s is deprecated", name); |
651 | /* FALL THROUGH */ |
652 | case '[': |
653 | case '!': |
93a17b20 |
654 | case '^': |
655 | case '~': |
656 | case '=': |
657 | case '-': |
658 | case '%': |
659 | case '.': |
93a17b20 |
660 | case '(': |
661 | case ')': |
662 | case '<': |
663 | case '>': |
664 | case ',': |
665 | case '\\': |
666 | case '/': |
93a17b20 |
667 | case '|': |
748a9306 |
668 | case '\001': |
93a17b20 |
669 | case '\004': |
ad8898e0 |
670 | case '\005': |
748a9306 |
671 | case '\006': |
a0d0e21e |
672 | case '\010': |
ad8898e0 |
673 | case '\017': |
93a17b20 |
674 | case '\t': |
675 | case '\020': |
676 | case '\024': |
677 | case '\027': |
463ee0b2 |
678 | if (len > 1) |
679 | break; |
680 | goto magicalize; |
681 | |
a0d0e21e |
682 | case '+': |
463ee0b2 |
683 | case '1': |
684 | case '2': |
685 | case '3': |
686 | case '4': |
687 | case '5': |
688 | case '6': |
689 | case '7': |
690 | case '8': |
691 | case '9': |
a0d0e21e |
692 | ro_magicalize: |
693 | SvREADONLY_on(GvSV(gv)); |
93a17b20 |
694 | magicalize: |
463ee0b2 |
695 | sv_magic(GvSV(gv), (SV*)gv, 0, name, len); |
93a17b20 |
696 | break; |
697 | |
698 | case '\014': |
463ee0b2 |
699 | if (len > 1) |
700 | break; |
93a17b20 |
701 | sv_setpv(GvSV(gv),"\f"); |
702 | formfeed = GvSV(gv); |
703 | break; |
704 | case ';': |
463ee0b2 |
705 | if (len > 1) |
706 | break; |
93a17b20 |
707 | sv_setpv(GvSV(gv),"\034"); |
708 | break; |
463ee0b2 |
709 | case ']': |
710 | if (len == 1) { |
f86702cc |
711 | SV *sv = GvSV(gv); |
93a17b20 |
712 | sv_upgrade(sv, SVt_PVNV); |
a0d0e21e |
713 | sv_setpv(sv, patchlevel); |
f86702cc |
714 | (void)sv_2nv(sv); |
715 | SvREADONLY_on(sv); |
93a17b20 |
716 | } |
717 | break; |
79072805 |
718 | } |
93a17b20 |
719 | return gv; |
79072805 |
720 | } |
721 | |
722 | void |
f6aff53a |
723 | gv_fullname3(sv, gv, prefix) |
79072805 |
724 | SV *sv; |
725 | GV *gv; |
f967eb5f |
726 | char *prefix; |
79072805 |
727 | { |
728 | HV *hv = GvSTASH(gv); |
f967eb5f |
729 | if (!hv) { |
730 | SvOK_off(sv); |
79072805 |
731 | return; |
f967eb5f |
732 | } |
733 | sv_setpv(sv, prefix ? prefix : ""); |
79072805 |
734 | sv_catpv(sv,HvNAME(hv)); |
463ee0b2 |
735 | sv_catpvn(sv,"::", 2); |
79072805 |
736 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); |
737 | } |
738 | |
739 | void |
f6aff53a |
740 | gv_efullname3(sv, gv, prefix) |
79072805 |
741 | SV *sv; |
742 | GV *gv; |
f967eb5f |
743 | char *prefix; |
79072805 |
744 | { |
f967eb5f |
745 | GV *egv = GvEGV(gv); |
748a9306 |
746 | if (!egv) |
747 | egv = gv; |
f6aff53a |
748 | gv_fullname3(sv, egv, prefix); |
749 | } |
750 | |
751 | /* XXX compatibility with versions <= 5.003. */ |
752 | void |
753 | gv_fullname(sv,gv) |
754 | SV *sv; |
755 | GV *gv; |
756 | { |
757 | gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : ""); |
758 | } |
759 | |
760 | /* XXX compatibility with versions <= 5.003. */ |
761 | void |
762 | gv_efullname(sv,gv) |
763 | SV *sv; |
764 | GV *gv; |
765 | { |
766 | gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : ""); |
79072805 |
767 | } |
768 | |
769 | IO * |
770 | newIO() |
771 | { |
772 | IO *io; |
8990e307 |
773 | GV *iogv; |
774 | |
775 | io = (IO*)NEWSV(0,0); |
a0d0e21e |
776 | sv_upgrade((SV *)io,SVt_PVIO); |
8990e307 |
777 | SvREFCNT(io) = 1; |
778 | SvOBJECT_on(io); |
dc437b57 |
779 | iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV); |
8990e307 |
780 | SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv)); |
79072805 |
781 | return io; |
782 | } |
783 | |
784 | void |
463ee0b2 |
785 | gv_check(stash) |
786 | HV* stash; |
79072805 |
787 | { |
788 | register HE *entry; |
789 | register I32 i; |
790 | register GV *gv; |
463ee0b2 |
791 | HV *hv; |
a0d0e21e |
792 | GV *filegv; |
463ee0b2 |
793 | |
8990e307 |
794 | if (!HvARRAY(stash)) |
795 | return; |
a0d0e21e |
796 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
dc437b57 |
797 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
798 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && |
799 | (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv)) |
a0d0e21e |
800 | { |
801 | if (hv != defstash) |
802 | gv_check(hv); /* nested package */ |
803 | } |
dc437b57 |
804 | else if (isALPHA(*HeKEY(entry))) { |
805 | gv = (GV*)HeVAL(entry); |
a5f75d66 |
806 | if (GvMULTI(gv)) |
463ee0b2 |
807 | continue; |
808 | curcop->cop_line = GvLINE(gv); |
a0d0e21e |
809 | filegv = GvFILEGV(gv); |
810 | curcop->cop_filegv = filegv; |
a5f75d66 |
811 | if (filegv && GvMULTI(filegv)) /* Filename began with slash */ |
8990e307 |
812 | continue; |
dc437b57 |
813 | warn("Name \"%s::%s\" used only once: possible typo", |
a0d0e21e |
814 | HvNAME(stash), GvNAME(gv)); |
463ee0b2 |
815 | } |
79072805 |
816 | } |
817 | } |
818 | } |
819 | |
820 | GV * |
a0d0e21e |
821 | newGVgen(pack) |
822 | char *pack; |
79072805 |
823 | { |
a0d0e21e |
824 | (void)sprintf(tokenbuf,"%s::_GEN_%ld",pack,(long)gensym++); |
85e6fe83 |
825 | return gv_fetchpv(tokenbuf,TRUE, SVt_PVGV); |
79072805 |
826 | } |
827 | |
828 | /* hopefully this is only called on local symbol table entries */ |
829 | |
830 | GP* |
831 | gp_ref(gp) |
832 | GP* gp; |
833 | { |
834 | gp->gp_refcnt++; |
44a8e56a |
835 | if (gp->gp_cv) { |
836 | if (gp->gp_cvgen) { |
837 | /* multi-named GPs cannot be used for method cache */ |
838 | SvREFCNT_dec(gp->gp_cv); |
839 | gp->gp_cv = Nullcv; |
840 | gp->gp_cvgen = 0; |
841 | } |
842 | else { |
843 | /* Adding a new name to a subroutine invalidates method cache */ |
844 | sub_generation++; |
845 | } |
846 | } |
79072805 |
847 | return gp; |
79072805 |
848 | } |
849 | |
850 | void |
851 | gp_free(gv) |
852 | GV* gv; |
853 | { |
79072805 |
854 | GP* gp; |
377b8fbc |
855 | CV* cv; |
79072805 |
856 | |
857 | if (!gv || !(gp = GvGP(gv))) |
858 | return; |
859 | if (gp->gp_refcnt == 0) { |
860 | warn("Attempt to free unreferenced glob pointers"); |
861 | return; |
862 | } |
44a8e56a |
863 | if (gp->gp_cv) { |
864 | /* Deleting the name of a subroutine invalidates method cache */ |
865 | sub_generation++; |
866 | } |
748a9306 |
867 | if (--gp->gp_refcnt > 0) { |
868 | if (gp->gp_egv == gv) |
869 | gp->gp_egv = 0; |
79072805 |
870 | return; |
748a9306 |
871 | } |
79072805 |
872 | |
8990e307 |
873 | SvREFCNT_dec(gp->gp_sv); |
874 | SvREFCNT_dec(gp->gp_av); |
875 | SvREFCNT_dec(gp->gp_hv); |
377b8fbc |
876 | SvREFCNT_dec(gp->gp_io); |
a6006777 |
877 | SvREFCNT_dec(gp->gp_cv); |
748a9306 |
878 | SvREFCNT_dec(gp->gp_form); |
879 | |
79072805 |
880 | Safefree(gp); |
881 | GvGP(gv) = 0; |
882 | } |
883 | |
884 | #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286)) |
885 | #define MICROPORT |
886 | #endif |
887 | |
888 | #ifdef MICROPORT /* Microport 2.4 hack */ |
889 | AV *GvAVn(gv) |
890 | register GV *gv; |
891 | { |
892 | if (GvGP(gv)->gp_av) |
893 | return GvGP(gv)->gp_av; |
894 | else |
895 | return GvGP(gv_AVadd(gv))->gp_av; |
896 | } |
897 | |
898 | HV *GvHVn(gv) |
899 | register GV *gv; |
900 | { |
901 | if (GvGP(gv)->gp_hv) |
902 | return GvGP(gv)->gp_hv; |
903 | else |
904 | return GvGP(gv_HVadd(gv))->gp_hv; |
905 | } |
906 | #endif /* Microport 2.4 hack */ |
a0d0e21e |
907 | |
908 | #ifdef OVERLOAD |
909 | /* Updates and caches the CV's */ |
910 | |
911 | bool |
912 | Gv_AMupdate(stash) |
913 | HV* stash; |
914 | { |
915 | GV** gvp; |
916 | HV* hv; |
917 | GV* gv; |
918 | CV* cv; |
919 | MAGIC* mg=mg_find((SV*)stash,'c'); |
748a9306 |
920 | AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL; |
a6006777 |
921 | AMT amt; |
a0d0e21e |
922 | |
e7ea3e70 |
923 | if (mg && amtp->was_ok_am == amagic_generation |
924 | && amtp->was_ok_sub == sub_generation) |
a6006777 |
925 | return AMT_AMAGIC(amtp); |
926 | if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */ |
748a9306 |
927 | int i; |
a6006777 |
928 | for (i=1; i<NofAMmeth; i++) { |
748a9306 |
929 | if (amtp->table[i]) { |
930 | SvREFCNT_dec(amtp->table[i]); |
931 | } |
932 | } |
933 | } |
a0d0e21e |
934 | sv_unmagic((SV*)stash, 'c'); |
935 | |
936 | DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) ); |
937 | |
a6006777 |
938 | amt.was_ok_am = amagic_generation; |
939 | amt.was_ok_sub = sub_generation; |
940 | amt.fallback = AMGfallNO; |
941 | amt.flags = 0; |
942 | |
943 | #ifdef OVERLOAD_VIA_HASH |
944 | gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */ |
a0d0e21e |
945 | if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) { |
946 | int filled=0; |
947 | int i; |
948 | char *cp; |
a0d0e21e |
949 | SV* sv; |
950 | SV** svp; |
a0d0e21e |
951 | |
952 | /* Work with "fallback" key, which we assume to be first in AMG_names */ |
953 | |
a6006777 |
954 | if (( cp = (char *)AMG_names[0] ) && |
955 | (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) { |
a0d0e21e |
956 | if (SvTRUE(sv)) amt.fallback=AMGfallYES; |
957 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; |
958 | } |
a6006777 |
959 | for (i = 1; i < NofAMmeth; i++) { |
960 | cv = 0; |
961 | cp = (char *)AMG_names[i]; |
962 | |
963 | svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE); |
dc437b57 |
964 | if (svp && ((sv = *svp) != &sv_undef)) { |
a0d0e21e |
965 | switch (SvTYPE(sv)) { |
966 | default: |
967 | if (!SvROK(sv)) { |
968 | if (!SvOK(sv)) break; |
748a9306 |
969 | gv = gv_fetchmethod(stash, SvPV(sv, na)); |
a0d0e21e |
970 | if (gv) cv = GvCV(gv); |
971 | break; |
972 | } |
973 | cv = (CV*)SvRV(sv); |
974 | if (SvTYPE(cv) == SVt_PVCV) |
975 | break; |
976 | /* FALL THROUGH */ |
977 | case SVt_PVHV: |
978 | case SVt_PVAV: |
a6006777 |
979 | croak("Not a subroutine reference in overload table"); |
a0d0e21e |
980 | return FALSE; |
981 | case SVt_PVCV: |
8ebc5c01 |
982 | cv = (CV*)sv; |
983 | break; |
a0d0e21e |
984 | case SVt_PVGV: |
8ebc5c01 |
985 | if (!(cv = GvCVu((GV*)sv))) |
986 | cv = sv_2cv(sv, &stash, &gv, TRUE); |
987 | break; |
a0d0e21e |
988 | } |
989 | if (cv) filled=1; |
990 | else { |
a6006777 |
991 | croak("Method for operation %s not found in package %.256s during blessing\n", |
a0d0e21e |
992 | cp,HvNAME(stash)); |
993 | return FALSE; |
994 | } |
995 | } |
a6006777 |
996 | #else |
997 | { |
998 | int filled = 0; |
999 | int i; |
1000 | char *cp; |
1001 | SV* sv = NULL; |
1002 | SV** svp; |
1003 | |
1004 | /* Work with "fallback" key, which we assume to be first in AMG_names */ |
1005 | |
1006 | if ( cp = (char *)AMG_names[0] ) { |
1007 | /* Try to find via inheritance. */ |
774d564b |
1008 | gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */ |
a6006777 |
1009 | if (gv) sv = GvSV(gv); |
1010 | |
774d564b |
1011 | if (!gv) goto no_table; |
a6006777 |
1012 | else if (SvTRUE(sv)) amt.fallback=AMGfallYES; |
1013 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; |
1014 | } |
1015 | |
1016 | for (i = 1; i < NofAMmeth; i++) { |
1017 | cv = 0; |
1018 | cp = (char *)AMG_names[i]; |
1019 | |
774d564b |
1020 | *buf = '('; /* A cookie: "(". */ |
a6006777 |
1021 | strcpy(buf + 1, cp); |
44a8e56a |
1022 | DEBUG_o( deb("Checking overloading of `%s' in package `%.256s'\n", |
1023 | cp, HvNAME(stash)) ); |
1024 | gv = gv_fetchmeth(stash, buf, strlen(buf), -1); /* no filling stash! */ |
1025 | if(gv && (cv = GvCV(gv))) { |
1026 | char *name = buf; |
1027 | if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil") |
1028 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) { |
1029 | /* GvSV contains the name of the method. */ |
1030 | GV *ngv; |
1031 | |
1032 | DEBUG_o( deb("Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n", |
1033 | SvPV(GvSV(gv), na), cp, HvNAME(stash)) ); |
1034 | if (SvPOK(GvSV(gv)) |
1035 | && (ngv = gv_fetchmethod(stash, SvPVX(GvSV(gv))))) { |
1036 | name = SvPVX(GvSV(gv)); |
1037 | cv = GvCV(gv = ngv); |
1038 | } else { |
1039 | /* Can be an import stub (created by `can'). */ |
1040 | if (GvCVGEN(gv)) { |
1041 | croak("Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'", |
1042 | (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), |
1043 | cp, HvNAME(stash)); |
1044 | } else |
1045 | croak("Cannot resolve method `%.256s' overloading `%s' in package `%.256s'", |
1046 | (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), |
1047 | cp, HvNAME(stash)); |
1048 | } |
1049 | /* If the sub is only a stub then we may have a gv to AUTOLOAD */ |
1050 | gv = (GV*)*hv_fetch(GvSTASH(gv), name, strlen(name), TRUE); |
1051 | cv = GvCV(gv); |
1052 | } |
1053 | DEBUG_o( deb("Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n", |
1054 | cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))), |
1055 | GvNAME(CvGV(cv))) ); |
1056 | filled = 1; |
1057 | } |
a6006777 |
1058 | #endif |
1059 | amt.table[i]=(CV*)SvREFCNT_inc(cv); |
a0d0e21e |
1060 | } |
a0d0e21e |
1061 | if (filled) { |
a6006777 |
1062 | AMT_AMAGIC_on(&amt); |
1063 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT)); |
a0d0e21e |
1064 | return TRUE; |
1065 | } |
1066 | } |
a6006777 |
1067 | /* Here we have no table: */ |
774d564b |
1068 | no_table: |
a6006777 |
1069 | AMT_AMAGIC_off(&amt); |
1070 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS)); |
a0d0e21e |
1071 | return FALSE; |
1072 | } |
1073 | |
1074 | /* During call to this subroutine stack can be reallocated. It is |
1075 | * advised to call SPAGAIN macro in your code after call */ |
1076 | |
1077 | SV* |
1078 | amagic_call(left,right,method,flags) |
1079 | SV* left; |
1080 | SV* right; |
1081 | int method; |
1082 | int flags; |
1083 | { |
1084 | MAGIC *mg; |
1085 | CV *cv; |
1086 | CV **cvp=NULL, **ocvp=NULL; |
1087 | AMT *amtp, *oamtp; |
1088 | int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0; |
748a9306 |
1089 | int postpr=0, inc_dec_ass=0, assignshift=assign?1:0; |
a0d0e21e |
1090 | HV* stash; |
1091 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) |
1092 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c')) |
a6006777 |
1093 | && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1094 | ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table |
1095 | : NULL)) |
748a9306 |
1096 | && ((cv = cvp[off=method+assignshift]) |
1097 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to |
1098 | * usual method */ |
1099 | (fl = 1, cv = cvp[off=method])))) { |
a0d0e21e |
1100 | lr = -1; /* Call method for left argument */ |
1101 | } else { |
1102 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { |
1103 | int logic; |
1104 | |
1105 | /* look for substituted methods */ |
1106 | switch (method) { |
1107 | case inc_amg: |
748a9306 |
1108 | if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1)) |
a0d0e21e |
1109 | || ((cv = cvp[off=add_amg]) && (postpr=1))) { |
1110 | right = &sv_yes; lr = -1; assign = 1; |
1111 | } |
1112 | break; |
1113 | case dec_amg: |
748a9306 |
1114 | if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1)) |
a0d0e21e |
1115 | || ((cv = cvp[off=subtr_amg]) && (postpr=1))) { |
1116 | right = &sv_yes; lr = -1; assign = 1; |
1117 | } |
1118 | break; |
1119 | case bool__amg: |
1120 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); |
1121 | break; |
1122 | case numer_amg: |
1123 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); |
1124 | break; |
1125 | case string_amg: |
1126 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); |
1127 | break; |
dc437b57 |
1128 | case not_amg: |
1129 | (void)((cv = cvp[off=bool__amg]) |
1130 | || (cv = cvp[off=numer_amg]) |
1131 | || (cv = cvp[off=string_amg])); |
1132 | postpr = 1; |
1133 | break; |
748a9306 |
1134 | case copy_amg: |
1135 | { |
1136 | SV* ref=SvRV(left); |
1137 | if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { /* Just to be |
1138 | * extra |
1139 | * causious, |
1140 | * maybe in some |
1141 | * additional |
1142 | * cases sv_setsv |
1143 | * is safe too */ |
1144 | SV* newref = newSVsv(ref); |
1145 | SvOBJECT_on(newref); |
1146 | SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref)); |
1147 | return newref; |
1148 | } |
1149 | } |
1150 | break; |
a0d0e21e |
1151 | case abs_amg: |
748a9306 |
1152 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e |
1153 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
748a9306 |
1154 | SV* nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e |
1155 | if (off1==lt_amg) { |
748a9306 |
1156 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e |
1157 | lt_amg,AMGf_noright); |
1158 | logic = SvTRUE(lessp); |
1159 | } else { |
748a9306 |
1160 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e |
1161 | ncmp_amg,AMGf_noright); |
1162 | logic = (SvNV(lessp) < 0); |
1163 | } |
1164 | if (logic) { |
1165 | if (off==subtr_amg) { |
1166 | right = left; |
748a9306 |
1167 | left = nullsv; |
a0d0e21e |
1168 | lr = 1; |
1169 | } |
1170 | } else { |
1171 | return left; |
1172 | } |
1173 | } |
1174 | break; |
1175 | case neg_amg: |
1176 | if (cv = cvp[off=subtr_amg]) { |
1177 | right = left; |
1178 | left = sv_2mortal(newSViv(0)); |
1179 | lr = 1; |
1180 | } |
1181 | break; |
1182 | default: |
1183 | goto not_found; |
1184 | } |
1185 | if (!cv) goto not_found; |
1186 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) |
1187 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c')) |
a6006777 |
1188 | && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1189 | ? (amtp = (AMT*)mg->mg_ptr)->table |
1190 | : NULL)) |
a0d0e21e |
1191 | && (cv = cvp[off=method])) { /* Method for right |
1192 | * argument found */ |
1193 | lr=1; |
748a9306 |
1194 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
4633a7c4 |
1195 | && (cvp=ocvp) && (lr = -1)) |
a0d0e21e |
1196 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
1197 | && !(flags & AMGf_unary)) { |
1198 | /* We look for substitution for |
1199 | * comparison operations and |
1200 | * concatendation */ |
1201 | if (method==concat_amg || method==concat_ass_amg |
1202 | || method==repeat_amg || method==repeat_ass_amg) { |
1203 | return NULL; /* Delegate operation to string conversion */ |
1204 | } |
1205 | off = -1; |
1206 | switch (method) { |
1207 | case lt_amg: |
1208 | case le_amg: |
1209 | case gt_amg: |
1210 | case ge_amg: |
1211 | case eq_amg: |
1212 | case ne_amg: |
1213 | postpr = 1; off=ncmp_amg; break; |
1214 | case slt_amg: |
1215 | case sle_amg: |
1216 | case sgt_amg: |
1217 | case sge_amg: |
1218 | case seq_amg: |
1219 | case sne_amg: |
1220 | postpr = 1; off=scmp_amg; break; |
1221 | } |
1222 | if (off != -1) cv = cvp[off]; |
1223 | if (!cv) { |
1224 | goto not_found; |
1225 | } |
1226 | } else { |
a6006777 |
1227 | not_found: /* No method found, either report or croak */ |
a0d0e21e |
1228 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
1229 | notfound = 1; lr = -1; |
1230 | } else if (cvp && (cv=cvp[nomethod_amg])) { |
1231 | notfound = 1; lr = 1; |
1232 | } else { |
774d564b |
1233 | if (off==-1) off=method; |
1234 | sprintf(buf, |
1235 | "Operation `%s': no method found,%sargument %s%.256s%s%.256s", |
a6006777 |
1236 | AMG_names[method + assignshift], |
e7ea3e70 |
1237 | (flags & AMGf_unary ? " " : "\n\tleft "), |
a0d0e21e |
1238 | SvAMAGIC(left)? |
1239 | "in overloaded package ": |
1240 | "has no overloaded magic", |
1241 | SvAMAGIC(left)? |
1242 | HvNAME(SvSTASH(SvRV(left))): |
1243 | "", |
1244 | SvAMAGIC(right)? |
e7ea3e70 |
1245 | ",\n\tright argument in overloaded package ": |
1246 | (flags & AMGf_unary |
1247 | ? "" |
1248 | : ",\n\tright argument has no overloaded magic"), |
a0d0e21e |
1249 | SvAMAGIC(right)? |
1250 | HvNAME(SvSTASH(SvRV(right))): |
1251 | ""); |
1252 | if (amtp && amtp->fallback >= AMGfallYES) { |
06b43eb7 |
1253 | DEBUG_o( deb(buf) ); |
a0d0e21e |
1254 | } else { |
a6006777 |
1255 | croak(buf); |
a0d0e21e |
1256 | } |
1257 | return NULL; |
1258 | } |
1259 | } |
1260 | } |
1261 | if (!notfound) { |
774d564b |
1262 | DEBUG_o( deb( |
1263 | "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %.256s%s\n", |
a6006777 |
1264 | AMG_names[off], |
748a9306 |
1265 | method+assignshift==off? "" : |
1266 | " (initially `", |
1267 | method+assignshift==off? "" : |
a6006777 |
1268 | AMG_names[method+assignshift], |
748a9306 |
1269 | method+assignshift==off? "" : "')", |
1270 | flags & AMGf_unary? "" : |
1271 | lr==1 ? " for right argument": " for left argument", |
1272 | flags & AMGf_unary? " for argument" : "", |
a0d0e21e |
1273 | HvNAME(stash), |
1274 | fl? ",\n\tassignment variant used": "") ); |
748a9306 |
1275 | /* Since we use shallow copy during assignment, we need |
1276 | * to dublicate the contents, probably calling user-supplied |
1277 | * version of copy operator |
1278 | */ |
c07a80fd |
1279 | if ((method + assignshift==off |
748a9306 |
1280 | && (assign || method==inc_amg || method==dec_amg)) |
1281 | || inc_dec_ass) RvDEEPCP(left); |
a0d0e21e |
1282 | } |
1283 | { |
1284 | dSP; |
1285 | BINOP myop; |
1286 | SV* res; |
1287 | |
1288 | Zero(&myop, 1, BINOP); |
1289 | myop.op_last = (OP *) &myop; |
1290 | myop.op_next = Nullop; |
1291 | myop.op_flags = OPf_KNOW|OPf_STACKED; |
1292 | |
1293 | ENTER; |
1294 | SAVESPTR(op); |
1295 | op = (OP *) &myop; |
dc437b57 |
1296 | if (perldb && curstash != debstash) |
1297 | op->op_private |= OPpENTERSUB_DB; |
a0d0e21e |
1298 | PUTBACK; |
1299 | pp_pushmark(); |
1300 | |
1301 | EXTEND(sp, notfound + 5); |
1302 | PUSHs(lr>0? right: left); |
1303 | PUSHs(lr>0? left: right); |
1304 | PUSHs( assign ? &sv_undef : (lr>0? &sv_yes: &sv_no)); |
1305 | if (notfound) { |
a6006777 |
1306 | PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) ); |
a0d0e21e |
1307 | } |
1308 | PUSHs((SV*)cv); |
1309 | PUTBACK; |
1310 | |
1311 | if (op = pp_entersub()) |
ad8898e0 |
1312 | runops(); |
a0d0e21e |
1313 | LEAVE; |
1314 | SPAGAIN; |
1315 | |
1316 | res=POPs; |
1317 | PUTBACK; |
1318 | |
a0d0e21e |
1319 | if (postpr) { |
1320 | int ans; |
1321 | switch (method) { |
1322 | case le_amg: |
1323 | case sle_amg: |
1324 | ans=SvIV(res)<=0; break; |
1325 | case lt_amg: |
1326 | case slt_amg: |
1327 | ans=SvIV(res)<0; break; |
1328 | case ge_amg: |
1329 | case sge_amg: |
1330 | ans=SvIV(res)>=0; break; |
1331 | case gt_amg: |
1332 | case sgt_amg: |
1333 | ans=SvIV(res)>0; break; |
1334 | case eq_amg: |
1335 | case seq_amg: |
1336 | ans=SvIV(res)==0; break; |
1337 | case ne_amg: |
1338 | case sne_amg: |
1339 | ans=SvIV(res)!=0; break; |
1340 | case inc_amg: |
1341 | case dec_amg: |
bbce6d69 |
1342 | SvSetSV(left,res); return left; |
dc437b57 |
1343 | case not_amg: |
44a8e56a |
1344 | ans=!SvOK(res); break; |
a0d0e21e |
1345 | } |
1346 | return ans? &sv_yes: &sv_no; |
748a9306 |
1347 | } else if (method==copy_amg) { |
1348 | if (!SvROK(res)) { |
a6006777 |
1349 | croak("Copy method did not return a reference"); |
748a9306 |
1350 | } |
1351 | return SvREFCNT_inc(SvRV(res)); |
a0d0e21e |
1352 | } else { |
1353 | return res; |
1354 | } |
1355 | } |
1356 | } |
1357 | #endif /* OVERLOAD */ |