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