Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* gv.c |
79072805 | 2 | * |
a0d0e21e | 3 | * Copyright (c) 1991-1994, Larry Wall |
79072805 LW |
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 LW |
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 LW |
17 | */ |
18 | ||
19 | #include "EXTERN.h" | |
20 | #include "perl.h" | |
21 | ||
463ee0b2 | 22 | extern char rcsid[]; |
93a17b20 | 23 | |
79072805 LW |
24 | GV * |
25 | gv_AVadd(gv) | |
26 | register GV *gv; | |
27 | { | |
a0d0e21e LW |
28 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
29 | croak("Bad symbol for array"); | |
79072805 LW |
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 LW |
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 LW |
43 | return gv; |
44 | } | |
45 | ||
46 | GV * | |
a0d0e21e LW |
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 LW |
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 LW |
71 | return gv; |
72 | } | |
73 | ||
463ee0b2 LW |
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 LW |
85 | if (SvLEN(gv)) |
86 | Safefree(SvPVX(gv)); | |
87 | Newz(602,gp, 1, GP); | |
8990e307 | 88 | GvGP(gv) = gp_ref(gp); |
463ee0b2 LW |
89 | GvREFCNT(gv) = 1; |
90 | GvSV(gv) = NEWSV(72,0); | |
91 | GvLINE(gv) = curcop->cop_line; | |
8990e307 | 92 | GvFILEGV(gv) = curcop->cop_filegv; |
463ee0b2 LW |
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 LW |
97 | GvNAMELEN(gv) = len; |
98 | if (multi) | |
a5f75d66 | 99 | GvMULTI_on(gv); |
463ee0b2 LW |
100 | } |
101 | ||
a0d0e21e LW |
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 LW |
122 | HV* stash; |
123 | char* name; | |
463ee0b2 | 124 | STRLEN len; |
a0d0e21e | 125 | I32 level; |
79072805 LW |
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 LW |
133 | |
134 | if (!stash) | |
135 | return 0; | |
136 | if (level > 100) | |
137 | croak("Recursive inheritance detected"); | |
463ee0b2 LW |
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 LW |
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 LW |
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 LW |
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 LW |
171 | continue; |
172 | } | |
a0d0e21e | 173 | gv = gv_fetchmeth(basestash, name, len, level + 1); |
463ee0b2 | 174 | if (gv) { |
748a9306 LW |
175 | if (cv) { /* junk old undef */ |
176 | assert(SvREFCNT(topgv) > 1); | |
177 | SvREFCNT_dec(topgv); | |
178 | SvREFCNT_dec(cv); | |
179 | } | |
463ee0b2 LW |
180 | GvCV(topgv) = GvCV(gv); /* cache the CV */ |
181 | GvCVGEN(topgv) = sub_generation; /* valid for now */ | |
79072805 | 182 | return gv; |
463ee0b2 | 183 | } |
79072805 LW |
184 | } |
185 | } | |
a0d0e21e LW |
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 LW |
190 | if (cv) { /* junk old undef */ |
191 | assert(SvREFCNT(topgv) > 1); | |
192 | SvREFCNT_dec(topgv); | |
193 | SvREFCNT_dec(cv); | |
194 | } | |
a0d0e21e LW |
195 | GvCV(topgv) = GvCV(gv); /* cache the CV */ |
196 | GvCVGEN(topgv) = sub_generation; /* valid for now */ | |
197 | return gv; | |
198 | } | |
199 | } | |
200 | } | |
201 | ||
79072805 LW |
202 | return 0; |
203 | } | |
204 | ||
205 | GV * | |
463ee0b2 LW |
206 | gv_fetchmethod(stash, name) |
207 | HV* stash; | |
208 | char* name; | |
209 | { | |
210 | register char *nend; | |
a0d0e21e LW |
211 | char *nsplit = 0; |
212 | GV* gv; | |
463ee0b2 LW |
213 | |
214 | for (nend = name; *nend; nend++) { | |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
235 | *nsplit = ch; |
236 | } | |
a0d0e21e LW |
237 | } |
238 | gv = gv_fetchmeth(stash, name, nend - name, 0); | |
4633a7c4 LW |
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 LW |
245 | /* Now look for @.*::SUPER::ISA */ |
246 | GV** gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); | |
760ac839 | 247 | len -= 7; |
4633a7c4 LW |
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 LW |
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 LW |
276 | if (!gv) { |
277 | CV* cv; | |
278 | ||
279 | if (strEQ(name,"import") || strEQ(name,"unimport")) | |
dc437b57 | 280 | gv = (GV*)&sv_yes; |
a0d0e21e LW |
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 LW |
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 LW |
291 | } |
292 | } | |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
335 | } |
336 | ||
a0d0e21e LW |
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 LW |
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 LW |
355 | register char *name = nambeg; |
356 | register GV *gv = 0; | |
79072805 | 357 | GV**gvp; |
79072805 LW |
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 LW |
368 | if ((*namend == '\'' && namend[1]) || |
369 | (*namend == ':' && namend[1] == ':')) | |
370 | { | |
463ee0b2 LW |
371 | if (!stash) |
372 | stash = defstash; | |
dc437b57 | 373 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0d0e21e | 374 | return Nullgv; |
463ee0b2 | 375 | |
85e6fe83 LW |
376 | len = namend - name; |
377 | if (len > 0) { | |
a0d0e21e LW |
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 LW |
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 LW |
391 | else if (!add) |
392 | return Nullgv; | |
463ee0b2 LW |
393 | else |
394 | gv_init(gv, stash, nambeg, namend - nambeg, (add & 2)); | |
85e6fe83 | 395 | |
463ee0b2 LW |
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 LW |
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 LW |
411 | len = namend - name; |
412 | if (!len) | |
413 | len = 1; | |
463ee0b2 LW |
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 LW |
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 LW |
454 | gvp = (GV**)hv_fetch(stash,name,len,0); |
455 | if (!gvp || | |
a5f75d66 AD |
456 | *gvp == (GV*)&sv_undef || |
457 | SvTYPE(*gvp) != SVt_PVGV) | |
458 | { | |
4633a7c4 | 459 | stash = 0; |
a5f75d66 AD |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
504 | gv_init_sv(gv, sv_type); |
505 | } | |
79072805 LW |
506 | return gv; |
507 | } | |
93a17b20 LW |
508 | |
509 | /* Adding a new symbol */ | |
510 | ||
a0d0e21e LW |
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 LW |
515 | |
516 | /* set up magic where warranted */ | |
517 | switch (*name) { | |
a0d0e21e LW |
518 | case 'A': |
519 | if (strEQ(name, "ARGV")) { | |
520 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; | |
521 | } | |
522 | break; | |
523 | ||
ed6116ce LW |
524 | case 'a': |
525 | case 'b': | |
526 | if (len == 1) | |
a5f75d66 | 527 | GvMULTI_on(gv); |
ed6116ce | 528 | break; |
a0d0e21e LW |
529 | case 'E': |
530 | if (strnEQ(name, "EXPORT", 6)) | |
a5f75d66 | 531 | GvMULTI_on(gv); |
a0d0e21e | 532 | break; |
463ee0b2 LW |
533 | case 'I': |
534 | if (strEQ(name, "ISA")) { | |
535 | AV* av = GvAVn(gv); | |
a5f75d66 | 536 | GvMULTI_on(gv); |
a0d0e21e LW |
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 LW |
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 LW |
552 | } |
553 | break; | |
a0d0e21e LW |
554 | #ifdef OVERLOAD |
555 | case 'O': | |
556 | if (strEQ(name, "OVERLOAD")) { | |
557 | HV* hv = GvHVn(gv); | |
a5f75d66 | 558 | GvMULTI_on(gv); |
a0d0e21e LW |
559 | sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0); |
560 | } | |
561 | break; | |
562 | #endif /* OVERLOAD */ | |
93a17b20 LW |
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 LW |
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 LW |
579 | /* initialize signal stack */ |
580 | signalstack = newAV(); | |
93a17b20 | 581 | AvREAL_off(signalstack); |
a0d0e21e LW |
582 | av_extend(signalstack, 30); |
583 | av_fill(signalstack, 0); | |
93a17b20 LW |
584 | } |
585 | break; | |
586 | ||
587 | case '&': | |
463ee0b2 LW |
588 | if (len > 1) |
589 | break; | |
93a17b20 LW |
590 | ampergv = gv; |
591 | sawampersand = TRUE; | |
a0d0e21e | 592 | goto ro_magicalize; |
93a17b20 LW |
593 | |
594 | case '`': | |
463ee0b2 LW |
595 | if (len > 1) |
596 | break; | |
93a17b20 LW |
597 | leftgv = gv; |
598 | sawampersand = TRUE; | |
a0d0e21e | 599 | goto ro_magicalize; |
93a17b20 LW |
600 | |
601 | case '\'': | |
463ee0b2 LW |
602 | if (len > 1) |
603 | break; | |
93a17b20 LW |
604 | rightgv = gv; |
605 | sawampersand = TRUE; | |
a0d0e21e | 606 | goto ro_magicalize; |
93a17b20 LW |
607 | |
608 | case ':': | |
463ee0b2 LW |
609 | if (len > 1) |
610 | break; | |
93a17b20 LW |
611 | sv_setpv(GvSV(gv),chopset); |
612 | goto magicalize; | |
613 | ||
93a17b20 | 614 | case '#': |
a0d0e21e LW |
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 LW |
621 | case '?': |
622 | case '^': | |
623 | case '~': | |
624 | case '=': | |
625 | case '-': | |
626 | case '%': | |
627 | case '.': | |
93a17b20 LW |
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 LW |
642 | case '\t': |
643 | case '\020': | |
644 | case '\024': | |
645 | case '\027': | |
463ee0b2 LW |
646 | if (len > 1) |
647 | break; | |
648 | goto magicalize; | |
649 | ||
a0d0e21e | 650 | case '+': |
463ee0b2 LW |
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 LW |
660 | ro_magicalize: |
661 | SvREADONLY_on(GvSV(gv)); | |
93a17b20 | 662 | magicalize: |
463ee0b2 | 663 | sv_magic(GvSV(gv), (SV*)gv, 0, name, len); |
93a17b20 LW |
664 | break; |
665 | ||
666 | case '\014': | |
463ee0b2 LW |
667 | if (len > 1) |
668 | break; | |
93a17b20 LW |
669 | sv_setpv(GvSV(gv),"\f"); |
670 | formfeed = GvSV(gv); | |
671 | break; | |
672 | case ';': | |
463ee0b2 LW |
673 | if (len > 1) |
674 | break; | |
93a17b20 LW |
675 | sv_setpv(GvSV(gv),"\034"); |
676 | break; | |
463ee0b2 LW |
677 | case ']': |
678 | if (len == 1) { | |
93a17b20 LW |
679 | SV *sv; |
680 | sv = GvSV(gv); | |
681 | sv_upgrade(sv, SVt_PVNV); | |
a0d0e21e | 682 | sv_setpv(sv, patchlevel); |
93a17b20 LW |
683 | } |
684 | break; | |
79072805 | 685 | } |
93a17b20 | 686 | return gv; |
79072805 LW |
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 LW |
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 LW |
710 | HV *hv; |
711 | ||
712 | if (!egv) | |
713 | egv = gv; | |
714 | hv = GvSTASH(egv); | |
79072805 LW |
715 | if (!hv) |
716 | return; | |
748a9306 | 717 | |
79072805 LW |
718 | sv_setpv(sv, sv == (SV*)gv ? "*" : ""); |
719 | sv_catpv(sv,HvNAME(hv)); | |
463ee0b2 | 720 | sv_catpvn(sv,"::", 2); |
79072805 LW |
721 | sv_catpvn(sv,GvNAME(egv),GvNAMELEN(egv)); |
722 | } | |
723 | ||
724 | IO * | |
725 | newIO() | |
726 | { | |
727 | IO *io; | |
8990e307 LW |
728 | GV *iogv; |
729 | ||
730 | io = (IO*)NEWSV(0,0); | |
a0d0e21e | 731 | sv_upgrade((SV *)io,SVt_PVIO); |
8990e307 LW |
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 LW |
736 | return io; |
737 | } | |
738 | ||
739 | void | |
463ee0b2 LW |
740 | gv_check(stash) |
741 | HV* stash; | |
79072805 LW |
742 | { |
743 | register HE *entry; | |
744 | register I32 i; | |
745 | register GV *gv; | |
463ee0b2 | 746 | HV *hv; |
a0d0e21e | 747 | GV *filegv; |
463ee0b2 | 748 | |
8990e307 LW |
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 LW |
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 LW |
762 | continue; |
763 | curcop->cop_line = GvLINE(gv); | |
a0d0e21e LW |
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 LW |
771 | } |
772 | } | |
773 | } | |
774 | ||
775 | GV * | |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
817 | if ((cv = gp->gp_cv) && !GvCVGEN(gv)) |
818 | SvREFCNT_dec(cv); | |
748a9306 LW |
819 | SvREFCNT_dec(gp->gp_form); |
820 | ||
79072805 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
939 | cp,HvNAME(stash)); |
940 | return FALSE; | |
941 | } | |
942 | } | |
943 | } | |
748a9306 | 944 | amt.table[i]=(CV*)SvREFCNT_inc(cv); |
a0d0e21e LW |
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 LW |
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 LW |
978 | && ((cv = cvp[off=method+assignshift]) |
979 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to | |
980 | * usual method */ | |
981 | (fl = 1, cv = cvp[off=method])))) { | |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
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 LW |
1039 | lt_amg,AMGf_noright); |
1040 | logic = SvTRUE(lessp); | |
1041 | } else { | |
748a9306 | 1042 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
1148 | HvNAME(stash), |
1149 | fl? ",\n\tassignment variant used": "") ); | |
748a9306 LW |
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 LW |
1155 | && (assign || method==inc_amg || method==dec_amg)) |
1156 | || inc_dec_ass) RvDEEPCP(left); | |
a0d0e21e LW |
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 LW |
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 LW |
1182 | } |
1183 | PUSHs((SV*)cv); | |
1184 | PUTBACK; | |
1185 | ||
1186 | if (op = pp_entersub()) | |
ad8898e0 | 1187 | runops(); |
a0d0e21e LW |
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 LW |
1225 | } |
1226 | return ans? &sv_yes: &sv_no; | |
748a9306 LW |
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 LW |
1232 | } else { |
1233 | return res; | |
1234 | } | |
1235 | } | |
1236 | } | |
1237 | #endif /* OVERLOAD */ |