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 | ||
71be2cbc | 22 | EXT 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]; | |
8ebc5c01 | 62 | STRLEN tmplen; |
79072805 LW |
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 LW |
75 | return gv; |
76 | } | |
77 | ||
463ee0b2 LW |
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 LW |
89 | if (SvLEN(gv)) |
90 | Safefree(SvPVX(gv)); | |
91 | Newz(602,gp, 1, GP); | |
8990e307 | 92 | GvGP(gv) = gp_ref(gp); |
463ee0b2 LW |
93 | GvREFCNT(gv) = 1; |
94 | GvSV(gv) = NEWSV(72,0); | |
95 | GvLINE(gv) = curcop->cop_line; | |
8990e307 | 96 | GvFILEGV(gv) = curcop->cop_filegv; |
463ee0b2 LW |
97 | GvEGV(gv) = gv; |
98 | sv_magic((SV*)gv, (SV*)gv, '*', name, len); | |
99 | GvSTASH(gv) = stash; | |
a0d0e21e | 100 | GvNAME(gv) = savepvn(name, len); |
463ee0b2 LW |
101 | GvNAMELEN(gv) = len; |
102 | if (multi) | |
a5f75d66 | 103 | GvMULTI_on(gv); |
463ee0b2 LW |
104 | } |
105 | ||
a0d0e21e LW |
106 | static void |
107 | gv_init_sv(gv, sv_type) | |
108 | GV* gv; | |
109 | I32 sv_type; | |
110 | { | |
111 | switch (sv_type) { | |
112 | case SVt_PVIO: | |
113 | (void)GvIOn(gv); | |
114 | break; | |
115 | case SVt_PVAV: | |
116 | (void)GvAVn(gv); | |
117 | break; | |
118 | case SVt_PVHV: | |
119 | (void)GvHVn(gv); | |
120 | break; | |
121 | } | |
122 | } | |
123 | ||
79072805 | 124 | GV * |
a0d0e21e | 125 | gv_fetchmeth(stash, name, len, level) |
79072805 LW |
126 | HV* stash; |
127 | char* name; | |
463ee0b2 | 128 | STRLEN len; |
a0d0e21e | 129 | I32 level; |
79072805 LW |
130 | { |
131 | AV* av; | |
463ee0b2 | 132 | GV* topgv; |
79072805 | 133 | GV* gv; |
463ee0b2 | 134 | GV** gvp; |
a0d0e21e | 135 | HV* lastchance; |
748a9306 | 136 | CV* cv; |
a0d0e21e LW |
137 | |
138 | if (!stash) | |
139 | return 0; | |
140 | if (level > 100) | |
141 | croak("Recursive inheritance detected"); | |
463ee0b2 LW |
142 | |
143 | gvp = (GV**)hv_fetch(stash, name, len, TRUE); | |
144 | ||
145 | DEBUG_o( deb("Looking for method %s in package %s\n",name,HvNAME(stash)) ); | |
146 | topgv = *gvp; | |
147 | if (SvTYPE(topgv) != SVt_PVGV) | |
148 | gv_init(topgv, stash, name, len, TRUE); | |
149 | ||
7a4c00b4 | 150 | if (cv = GvCV(topgv)) { |
151 | if (CvXSUB(cv) || CvROOT(cv) || CvGV(cv)) { /* Not deleted, possibly autoloaded. */ | |
152 | if (GvCVGEN(topgv) >= sub_generation) | |
153 | return topgv; /* valid cached inheritance */ | |
154 | if (!GvCVGEN(topgv)) { /* not an inheritance cache */ | |
155 | return topgv; | |
156 | } | |
748a9306 | 157 | } |
7a4c00b4 | 158 | /* stale cached entry, just junk it */ |
159 | SvREFCNT_dec(cv); | |
160 | GvCV(topgv) = cv = 0; | |
161 | GvCVGEN(topgv) = 0; | |
463ee0b2 | 162 | } |
7a4c00b4 | 163 | /* Now cv = 0, and there is no cv in topgv. */ |
79072805 LW |
164 | |
165 | gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); | |
166 | if (gvp && (gv = *gvp) != (GV*)&sv_undef && (av = GvAV(gv))) { | |
167 | SV** svp = AvARRAY(av); | |
168 | I32 items = AvFILL(av) + 1; | |
169 | while (items--) { | |
79072805 | 170 | SV* sv = *svp++; |
a0d0e21e | 171 | HV* basestash = gv_stashsv(sv, FALSE); |
9bbf4081 | 172 | if (!basestash) { |
79072805 | 173 | if (dowarn) |
a0d0e21e | 174 | warn("Can't locate package %s for @%s::ISA", |
463ee0b2 | 175 | SvPVX(sv), HvNAME(stash)); |
79072805 LW |
176 | continue; |
177 | } | |
a0d0e21e | 178 | gv = gv_fetchmeth(basestash, name, len, level + 1); |
463ee0b2 LW |
179 | if (gv) { |
180 | GvCV(topgv) = GvCV(gv); /* cache the CV */ | |
181 | GvCVGEN(topgv) = sub_generation; /* valid for now */ | |
7a4c00b4 | 182 | SvREFCNT_inc(GvCV(gv)); |
79072805 | 183 | return gv; |
463ee0b2 | 184 | } |
79072805 LW |
185 | } |
186 | } | |
a0d0e21e LW |
187 | |
188 | if (!level) { | |
dc437b57 | 189 | if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) { |
a0d0e21e LW |
190 | if (gv = gv_fetchmeth(lastchance, name, len, level + 1)) { |
191 | GvCV(topgv) = GvCV(gv); /* cache the CV */ | |
192 | GvCVGEN(topgv) = sub_generation; /* valid for now */ | |
7a4c00b4 | 193 | SvREFCNT_inc(GvCV(gv)); |
a0d0e21e LW |
194 | return gv; |
195 | } | |
196 | } | |
197 | } | |
198 | ||
79072805 LW |
199 | return 0; |
200 | } | |
201 | ||
202 | GV * | |
463ee0b2 LW |
203 | gv_fetchmethod(stash, name) |
204 | HV* stash; | |
205 | char* name; | |
206 | { | |
207 | register char *nend; | |
a0d0e21e LW |
208 | char *nsplit = 0; |
209 | GV* gv; | |
463ee0b2 LW |
210 | |
211 | for (nend = name; *nend; nend++) { | |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
232 | *nsplit = ch; |
233 | } | |
a0d0e21e LW |
234 | } |
235 | gv = gv_fetchmeth(stash, name, nend - name, 0); | |
4633a7c4 LW |
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 LW |
242 | /* Now look for @.*::SUPER::ISA */ |
243 | GV** gvp = (GV**)hv_fetch(stash,"ISA",3,FALSE); | |
760ac839 | 244 | len -= 7; |
4633a7c4 LW |
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 LW |
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 LW |
273 | if (!gv) { |
274 | CV* cv; | |
275 | ||
702887b4 | 276 | if (strEQ(name,"import")) |
dc437b57 | 277 | gv = (GV*)&sv_yes; |
a0d0e21e | 278 | else if (strNE(name, "AUTOLOAD")) { |
8ebc5c01 | 279 | if (gv = gv_fetchmeth(stash, "AUTOLOAD", 8, 0)) { |
280 | /* One more chance... */ | |
748a9306 | 281 | SV *tmpstr = sv_2mortal(newSVpv(HvNAME(stash),0)); |
a0d0e21e LW |
282 | sv_catpvn(tmpstr,"::", 2); |
283 | sv_catpvn(tmpstr, name, nend - name); | |
8ebc5c01 | 284 | cv = GvCV(gv); |
a0d0e21e | 285 | sv_setsv(GvSV(CvGV(cv)), tmpstr); |
bbce6d69 | 286 | SvTAINTED_off(GvSV(CvGV(cv))); |
a0d0e21e | 287 | } |
463ee0b2 LW |
288 | } |
289 | } | |
a0d0e21e LW |
290 | return gv; |
291 | } | |
292 | ||
293 | HV* | |
294 | gv_stashpv(name,create) | |
295 | char *name; | |
296 | I32 create; | |
297 | { | |
dc437b57 | 298 | return gv_stashpvn(name, strlen(name), create); |
299 | } | |
300 | ||
301 | HV* | |
302 | gv_stashpvn(name,namelen,create) | |
303 | char *name; | |
304 | U32 namelen; | |
305 | I32 create; | |
306 | { | |
307 | char tmpbuf[1203]; | |
a0d0e21e LW |
308 | HV *stash; |
309 | GV *tmpgv; | |
dc437b57 | 310 | |
311 | if (namelen > 1200) { | |
312 | namelen = 1200; | |
313 | #ifdef VMS | |
314 | warn("Weird package name \"%s\" truncated", name); | |
315 | #else | |
316 | warn("Weird package name \"%.*s...\" truncated", namelen, name); | |
317 | #endif | |
318 | } | |
319 | Copy(name,tmpbuf,namelen,char); | |
320 | tmpbuf[namelen++] = ':'; | |
321 | tmpbuf[namelen++] = ':'; | |
322 | tmpbuf[namelen] = '\0'; | |
a0d0e21e LW |
323 | tmpgv = gv_fetchpv(tmpbuf,create, SVt_PVHV); |
324 | if (!tmpgv) | |
325 | return 0; | |
326 | if (!GvHV(tmpgv)) | |
327 | GvHV(tmpgv) = newHV(); | |
328 | stash = GvHV(tmpgv); | |
329 | if (!HvNAME(stash)) | |
330 | HvNAME(stash) = savepv(name); | |
331 | return stash; | |
463ee0b2 LW |
332 | } |
333 | ||
a0d0e21e LW |
334 | HV* |
335 | gv_stashsv(sv,create) | |
336 | SV *sv; | |
337 | I32 create; | |
338 | { | |
dc437b57 | 339 | register char *ptr; |
340 | STRLEN len; | |
341 | ptr = SvPV(sv,len); | |
342 | return gv_stashpvn(ptr, len, create); | |
a0d0e21e LW |
343 | } |
344 | ||
345 | ||
463ee0b2 | 346 | GV * |
a0d0e21e | 347 | gv_fetchpv(nambeg,add,sv_type) |
463ee0b2 | 348 | char *nambeg; |
79072805 | 349 | I32 add; |
a0d0e21e | 350 | I32 sv_type; |
79072805 | 351 | { |
463ee0b2 LW |
352 | register char *name = nambeg; |
353 | register GV *gv = 0; | |
79072805 | 354 | GV**gvp; |
79072805 LW |
355 | I32 len; |
356 | register char *namend; | |
463ee0b2 | 357 | HV *stash = 0; |
79072805 | 358 | bool global = FALSE; |
85e6fe83 | 359 | char *tmpbuf; |
79072805 | 360 | |
c07a80fd | 361 | if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */ |
362 | name++; | |
363 | ||
79072805 | 364 | for (namend = name; *namend; namend++) { |
463ee0b2 LW |
365 | if ((*namend == '\'' && namend[1]) || |
366 | (*namend == ':' && namend[1] == ':')) | |
367 | { | |
463ee0b2 LW |
368 | if (!stash) |
369 | stash = defstash; | |
dc437b57 | 370 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0d0e21e | 371 | return Nullgv; |
463ee0b2 | 372 | |
85e6fe83 LW |
373 | len = namend - name; |
374 | if (len > 0) { | |
a0d0e21e LW |
375 | New(601, tmpbuf, len+3, char); |
376 | Copy(name, tmpbuf, len, char); | |
377 | tmpbuf[len++] = ':'; | |
378 | tmpbuf[len++] = ':'; | |
379 | tmpbuf[len] = '\0'; | |
463ee0b2 | 380 | gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); |
85e6fe83 | 381 | Safefree(tmpbuf); |
463ee0b2 LW |
382 | if (!gvp || *gvp == (GV*)&sv_undef) |
383 | return Nullgv; | |
384 | gv = *gvp; | |
85e6fe83 | 385 | |
463ee0b2 | 386 | if (SvTYPE(gv) == SVt_PVGV) |
a5f75d66 | 387 | GvMULTI_on(gv); |
a0d0e21e LW |
388 | else if (!add) |
389 | return Nullgv; | |
463ee0b2 LW |
390 | else |
391 | gv_init(gv, stash, nambeg, namend - nambeg, (add & 2)); | |
85e6fe83 | 392 | |
463ee0b2 LW |
393 | if (!(stash = GvHV(gv))) |
394 | stash = GvHV(gv) = newHV(); | |
85e6fe83 | 395 | |
463ee0b2 | 396 | if (!HvNAME(stash)) |
a0d0e21e | 397 | HvNAME(stash) = savepvn(nambeg, namend - nambeg); |
463ee0b2 LW |
398 | } |
399 | ||
400 | if (*namend == ':') | |
401 | namend++; | |
402 | namend++; | |
403 | name = namend; | |
404 | if (!*name) | |
dc437b57 | 405 | return gv ? gv : (GV*)*hv_fetch(defstash, "main::", 6, TRUE); |
79072805 | 406 | } |
79072805 | 407 | } |
a0d0e21e LW |
408 | len = namend - name; |
409 | if (!len) | |
410 | len = 1; | |
463ee0b2 LW |
411 | |
412 | /* No stash in name, so see how we can default */ | |
413 | ||
414 | if (!stash) { | |
415 | if (isIDFIRST(*name)) { | |
416 | if (isUPPER(*name)) { | |
417 | if (*name > 'I') { | |
418 | if (*name == 'S' && ( | |
419 | strEQ(name, "SIG") || | |
420 | strEQ(name, "STDIN") || | |
421 | strEQ(name, "STDOUT") || | |
422 | strEQ(name, "STDERR") )) | |
423 | global = TRUE; | |
424 | } | |
425 | else if (*name > 'E') { | |
426 | if (*name == 'I' && strEQ(name, "INC")) | |
427 | global = TRUE; | |
428 | } | |
429 | else if (*name > 'A') { | |
430 | if (*name == 'E' && strEQ(name, "ENV")) | |
431 | global = TRUE; | |
432 | } | |
433 | else if (*name == 'A' && ( | |
434 | strEQ(name, "ARGV") || | |
435 | strEQ(name, "ARGVOUT") )) | |
436 | global = TRUE; | |
437 | } | |
438 | else if (*name == '_' && !name[1]) | |
439 | global = TRUE; | |
440 | if (global) | |
441 | stash = defstash; | |
85e6fe83 | 442 | else if ((COP*)curcop == &compiling) { |
a0d0e21e | 443 | stash = curstash; |
748a9306 LW |
444 | if (add && (hints & HINT_STRICT_VARS) && |
445 | sv_type != SVt_PVCV && | |
446 | sv_type != SVt_PVGV && | |
4633a7c4 | 447 | sv_type != SVt_PVFM && |
c07a80fd | 448 | sv_type != SVt_PVIO && |
377b8fbc | 449 | !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) ) |
748a9306 | 450 | { |
4633a7c4 LW |
451 | gvp = (GV**)hv_fetch(stash,name,len,0); |
452 | if (!gvp || | |
a5f75d66 AD |
453 | *gvp == (GV*)&sv_undef || |
454 | SvTYPE(*gvp) != SVt_PVGV) | |
455 | { | |
4633a7c4 | 456 | stash = 0; |
a5f75d66 AD |
457 | } |
458 | else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) || | |
459 | sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) || | |
460 | sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) ) | |
4633a7c4 | 461 | { |
a5f75d66 | 462 | warn("Variable \"%c%s\" is not imported", |
4633a7c4 LW |
463 | sv_type == SVt_PVAV ? '@' : |
464 | sv_type == SVt_PVHV ? '%' : '$', | |
465 | name); | |
8ebc5c01 | 466 | if (GvCVu(*gvp)) |
4633a7c4 | 467 | warn("(Did you mean &%s instead?)\n", name); |
a0d0e21e | 468 | stash = 0; |
4633a7c4 | 469 | } |
a0d0e21e | 470 | } |
85e6fe83 | 471 | } |
463ee0b2 LW |
472 | else |
473 | stash = curcop->cop_stash; | |
474 | } | |
475 | else | |
476 | stash = defstash; | |
477 | } | |
478 | ||
479 | /* By this point we should have a stash and a name */ | |
480 | ||
a0d0e21e LW |
481 | if (!stash) { |
482 | if (add) { | |
483 | warn("Global symbol \"%s\" requires explicit package name", name); | |
484 | ++error_count; | |
485 | stash = curstash ? curstash : defstash; /* avoid core dumps */ | |
486 | } | |
487 | else | |
488 | return Nullgv; | |
489 | } | |
490 | ||
491 | if (!SvREFCNT(stash)) /* symbol table under destruction */ | |
492 | return Nullgv; | |
493 | ||
79072805 LW |
494 | gvp = (GV**)hv_fetch(stash,name,len,add); |
495 | if (!gvp || *gvp == (GV*)&sv_undef) | |
496 | return Nullgv; | |
497 | gv = *gvp; | |
498 | if (SvTYPE(gv) == SVt_PVGV) { | |
a0d0e21e | 499 | if (add) { |
a5f75d66 | 500 | GvMULTI_on(gv); |
a0d0e21e LW |
501 | gv_init_sv(gv, sv_type); |
502 | } | |
79072805 LW |
503 | return gv; |
504 | } | |
93a17b20 LW |
505 | |
506 | /* Adding a new symbol */ | |
507 | ||
a0d0e21e LW |
508 | if (add & 4) |
509 | warn("Had to create %s unexpectedly", nambeg); | |
463ee0b2 | 510 | gv_init(gv, stash, name, len, add & 2); |
a0d0e21e | 511 | gv_init_sv(gv, sv_type); |
93a17b20 LW |
512 | |
513 | /* set up magic where warranted */ | |
514 | switch (*name) { | |
a0d0e21e LW |
515 | case 'A': |
516 | if (strEQ(name, "ARGV")) { | |
517 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; | |
518 | } | |
519 | break; | |
520 | ||
ed6116ce LW |
521 | case 'a': |
522 | case 'b': | |
523 | if (len == 1) | |
a5f75d66 | 524 | GvMULTI_on(gv); |
ed6116ce | 525 | break; |
a0d0e21e LW |
526 | case 'E': |
527 | if (strnEQ(name, "EXPORT", 6)) | |
a5f75d66 | 528 | GvMULTI_on(gv); |
a0d0e21e | 529 | break; |
463ee0b2 LW |
530 | case 'I': |
531 | if (strEQ(name, "ISA")) { | |
532 | AV* av = GvAVn(gv); | |
a5f75d66 | 533 | GvMULTI_on(gv); |
a0d0e21e LW |
534 | sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0); |
535 | if (add & 2 && strEQ(nambeg,"AnyDBM_File::ISA") && AvFILL(av) == -1) | |
85e6fe83 | 536 | { |
a0d0e21e LW |
537 | char *pname; |
538 | av_push(av, newSVpv(pname = "NDBM_File",0)); | |
dc437b57 | 539 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e | 540 | av_push(av, newSVpv(pname = "DB_File",0)); |
dc437b57 | 541 | gv_stashpvn(pname, 7, TRUE); |
a0d0e21e | 542 | av_push(av, newSVpv(pname = "GDBM_File",0)); |
dc437b57 | 543 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e | 544 | av_push(av, newSVpv(pname = "SDBM_File",0)); |
dc437b57 | 545 | gv_stashpvn(pname, 9, TRUE); |
a0d0e21e | 546 | av_push(av, newSVpv(pname = "ODBM_File",0)); |
dc437b57 | 547 | gv_stashpvn(pname, 9, TRUE); |
85e6fe83 | 548 | } |
463ee0b2 LW |
549 | } |
550 | break; | |
a0d0e21e LW |
551 | #ifdef OVERLOAD |
552 | case 'O': | |
553 | if (strEQ(name, "OVERLOAD")) { | |
554 | HV* hv = GvHVn(gv); | |
a5f75d66 | 555 | GvMULTI_on(gv); |
a0d0e21e LW |
556 | sv_magic((SV*)hv, (SV*)gv, 'A', 0, 0); |
557 | } | |
558 | break; | |
559 | #endif /* OVERLOAD */ | |
93a17b20 LW |
560 | case 'S': |
561 | if (strEQ(name, "SIG")) { | |
562 | HV *hv; | |
dc437b57 | 563 | I32 i; |
93a17b20 | 564 | siggv = gv; |
a5f75d66 | 565 | GvMULTI_on(siggv); |
93a17b20 LW |
566 | hv = GvHVn(siggv); |
567 | hv_magic(hv, siggv, 'S'); | |
dc437b57 | 568 | for(i=1;sig_name[i];i++) { |
569 | SV ** init; | |
570 | init=hv_fetch(hv,sig_name[i],strlen(sig_name[i]),1); | |
571 | if(init) | |
572 | sv_setsv(*init,&sv_undef); | |
573 | psig_ptr[i] = 0; | |
574 | psig_name[i] = 0; | |
575 | } | |
93a17b20 LW |
576 | /* initialize signal stack */ |
577 | signalstack = newAV(); | |
93a17b20 | 578 | AvREAL_off(signalstack); |
a0d0e21e LW |
579 | av_extend(signalstack, 30); |
580 | av_fill(signalstack, 0); | |
93a17b20 LW |
581 | } |
582 | break; | |
583 | ||
584 | case '&': | |
463ee0b2 LW |
585 | if (len > 1) |
586 | break; | |
93a17b20 LW |
587 | ampergv = gv; |
588 | sawampersand = TRUE; | |
a0d0e21e | 589 | goto ro_magicalize; |
93a17b20 LW |
590 | |
591 | case '`': | |
463ee0b2 LW |
592 | if (len > 1) |
593 | break; | |
93a17b20 LW |
594 | leftgv = gv; |
595 | sawampersand = TRUE; | |
a0d0e21e | 596 | goto ro_magicalize; |
93a17b20 LW |
597 | |
598 | case '\'': | |
463ee0b2 LW |
599 | if (len > 1) |
600 | break; | |
93a17b20 LW |
601 | rightgv = gv; |
602 | sawampersand = TRUE; | |
a0d0e21e | 603 | goto ro_magicalize; |
93a17b20 LW |
604 | |
605 | case ':': | |
463ee0b2 LW |
606 | if (len > 1) |
607 | break; | |
93a17b20 LW |
608 | sv_setpv(GvSV(gv),chopset); |
609 | goto magicalize; | |
610 | ||
93a17b20 | 611 | case '#': |
a0d0e21e LW |
612 | case '*': |
613 | if (dowarn && len == 1 && sv_type == SVt_PV) | |
614 | warn("Use of $%s is deprecated", name); | |
615 | /* FALL THROUGH */ | |
616 | case '[': | |
617 | case '!': | |
93a17b20 LW |
618 | case '?': |
619 | case '^': | |
620 | case '~': | |
621 | case '=': | |
622 | case '-': | |
623 | case '%': | |
624 | case '.': | |
93a17b20 LW |
625 | case '(': |
626 | case ')': | |
627 | case '<': | |
628 | case '>': | |
629 | case ',': | |
630 | case '\\': | |
631 | case '/': | |
93a17b20 | 632 | case '|': |
748a9306 | 633 | case '\001': |
93a17b20 | 634 | case '\004': |
ad8898e0 | 635 | case '\005': |
748a9306 | 636 | case '\006': |
a0d0e21e | 637 | case '\010': |
ad8898e0 | 638 | case '\017': |
93a17b20 LW |
639 | case '\t': |
640 | case '\020': | |
641 | case '\024': | |
642 | case '\027': | |
463ee0b2 LW |
643 | if (len > 1) |
644 | break; | |
645 | goto magicalize; | |
646 | ||
a0d0e21e | 647 | case '+': |
463ee0b2 LW |
648 | case '1': |
649 | case '2': | |
650 | case '3': | |
651 | case '4': | |
652 | case '5': | |
653 | case '6': | |
654 | case '7': | |
655 | case '8': | |
656 | case '9': | |
a0d0e21e LW |
657 | ro_magicalize: |
658 | SvREADONLY_on(GvSV(gv)); | |
93a17b20 | 659 | magicalize: |
463ee0b2 | 660 | sv_magic(GvSV(gv), (SV*)gv, 0, name, len); |
93a17b20 LW |
661 | break; |
662 | ||
663 | case '\014': | |
463ee0b2 LW |
664 | if (len > 1) |
665 | break; | |
93a17b20 LW |
666 | sv_setpv(GvSV(gv),"\f"); |
667 | formfeed = GvSV(gv); | |
668 | break; | |
669 | case ';': | |
463ee0b2 LW |
670 | if (len > 1) |
671 | break; | |
93a17b20 LW |
672 | sv_setpv(GvSV(gv),"\034"); |
673 | break; | |
463ee0b2 LW |
674 | case ']': |
675 | if (len == 1) { | |
93a17b20 LW |
676 | SV *sv; |
677 | sv = GvSV(gv); | |
678 | sv_upgrade(sv, SVt_PVNV); | |
a0d0e21e | 679 | sv_setpv(sv, patchlevel); |
93a17b20 LW |
680 | } |
681 | break; | |
79072805 | 682 | } |
93a17b20 | 683 | return gv; |
79072805 LW |
684 | } |
685 | ||
686 | void | |
f6aff53a | 687 | gv_fullname3(sv, gv, prefix) |
79072805 LW |
688 | SV *sv; |
689 | GV *gv; | |
f967eb5f | 690 | char *prefix; |
79072805 LW |
691 | { |
692 | HV *hv = GvSTASH(gv); | |
f967eb5f | 693 | if (!hv) { |
694 | SvOK_off(sv); | |
79072805 | 695 | return; |
f967eb5f | 696 | } |
697 | sv_setpv(sv, prefix ? prefix : ""); | |
79072805 | 698 | sv_catpv(sv,HvNAME(hv)); |
463ee0b2 | 699 | sv_catpvn(sv,"::", 2); |
79072805 LW |
700 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); |
701 | } | |
702 | ||
703 | void | |
f6aff53a | 704 | gv_efullname3(sv, gv, prefix) |
79072805 LW |
705 | SV *sv; |
706 | GV *gv; | |
f967eb5f | 707 | char *prefix; |
79072805 | 708 | { |
f967eb5f | 709 | GV *egv = GvEGV(gv); |
748a9306 LW |
710 | if (!egv) |
711 | egv = gv; | |
f6aff53a | 712 | gv_fullname3(sv, egv, prefix); |
713 | } | |
714 | ||
715 | /* XXX compatibility with versions <= 5.003. */ | |
716 | void | |
717 | gv_fullname(sv,gv) | |
718 | SV *sv; | |
719 | GV *gv; | |
720 | { | |
721 | gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
722 | } | |
723 | ||
724 | /* XXX compatibility with versions <= 5.003. */ | |
725 | void | |
726 | gv_efullname(sv,gv) | |
727 | SV *sv; | |
728 | GV *gv; | |
729 | { | |
730 | gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
79072805 LW |
731 | } |
732 | ||
733 | IO * | |
734 | newIO() | |
735 | { | |
736 | IO *io; | |
8990e307 LW |
737 | GV *iogv; |
738 | ||
739 | io = (IO*)NEWSV(0,0); | |
a0d0e21e | 740 | sv_upgrade((SV *)io,SVt_PVIO); |
8990e307 LW |
741 | SvREFCNT(io) = 1; |
742 | SvOBJECT_on(io); | |
dc437b57 | 743 | iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV); |
8990e307 | 744 | SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv)); |
79072805 LW |
745 | return io; |
746 | } | |
747 | ||
748 | void | |
463ee0b2 LW |
749 | gv_check(stash) |
750 | HV* stash; | |
79072805 LW |
751 | { |
752 | register HE *entry; | |
753 | register I32 i; | |
754 | register GV *gv; | |
463ee0b2 | 755 | HV *hv; |
a0d0e21e | 756 | GV *filegv; |
463ee0b2 | 757 | |
8990e307 LW |
758 | if (!HvARRAY(stash)) |
759 | return; | |
a0d0e21e | 760 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
dc437b57 | 761 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
762 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && | |
763 | (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv)) | |
a0d0e21e LW |
764 | { |
765 | if (hv != defstash) | |
766 | gv_check(hv); /* nested package */ | |
767 | } | |
dc437b57 | 768 | else if (isALPHA(*HeKEY(entry))) { |
769 | gv = (GV*)HeVAL(entry); | |
a5f75d66 | 770 | if (GvMULTI(gv)) |
463ee0b2 LW |
771 | continue; |
772 | curcop->cop_line = GvLINE(gv); | |
a0d0e21e LW |
773 | filegv = GvFILEGV(gv); |
774 | curcop->cop_filegv = filegv; | |
a5f75d66 | 775 | if (filegv && GvMULTI(filegv)) /* Filename began with slash */ |
8990e307 | 776 | continue; |
dc437b57 | 777 | warn("Name \"%s::%s\" used only once: possible typo", |
a0d0e21e | 778 | HvNAME(stash), GvNAME(gv)); |
463ee0b2 | 779 | } |
79072805 LW |
780 | } |
781 | } | |
782 | } | |
783 | ||
784 | GV * | |
a0d0e21e LW |
785 | newGVgen(pack) |
786 | char *pack; | |
79072805 | 787 | { |
a0d0e21e | 788 | (void)sprintf(tokenbuf,"%s::_GEN_%ld",pack,(long)gensym++); |
85e6fe83 | 789 | return gv_fetchpv(tokenbuf,TRUE, SVt_PVGV); |
79072805 LW |
790 | } |
791 | ||
792 | /* hopefully this is only called on local symbol table entries */ | |
793 | ||
794 | GP* | |
795 | gp_ref(gp) | |
796 | GP* gp; | |
797 | { | |
798 | gp->gp_refcnt++; | |
799 | return gp; | |
800 | ||
801 | } | |
802 | ||
803 | void | |
804 | gp_free(gv) | |
805 | GV* gv; | |
806 | { | |
79072805 | 807 | GP* gp; |
377b8fbc | 808 | CV* cv; |
79072805 LW |
809 | |
810 | if (!gv || !(gp = GvGP(gv))) | |
811 | return; | |
812 | if (gp->gp_refcnt == 0) { | |
813 | warn("Attempt to free unreferenced glob pointers"); | |
814 | return; | |
815 | } | |
748a9306 LW |
816 | if (--gp->gp_refcnt > 0) { |
817 | if (gp->gp_egv == gv) | |
818 | gp->gp_egv = 0; | |
79072805 | 819 | return; |
748a9306 | 820 | } |
79072805 | 821 | |
8990e307 LW |
822 | SvREFCNT_dec(gp->gp_sv); |
823 | SvREFCNT_dec(gp->gp_av); | |
824 | SvREFCNT_dec(gp->gp_hv); | |
377b8fbc | 825 | SvREFCNT_dec(gp->gp_io); |
a6006777 | 826 | SvREFCNT_dec(gp->gp_cv); |
748a9306 LW |
827 | SvREFCNT_dec(gp->gp_form); |
828 | ||
79072805 LW |
829 | Safefree(gp); |
830 | GvGP(gv) = 0; | |
831 | } | |
832 | ||
833 | #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286)) | |
834 | #define MICROPORT | |
835 | #endif | |
836 | ||
837 | #ifdef MICROPORT /* Microport 2.4 hack */ | |
838 | AV *GvAVn(gv) | |
839 | register GV *gv; | |
840 | { | |
841 | if (GvGP(gv)->gp_av) | |
842 | return GvGP(gv)->gp_av; | |
843 | else | |
844 | return GvGP(gv_AVadd(gv))->gp_av; | |
845 | } | |
846 | ||
847 | HV *GvHVn(gv) | |
848 | register GV *gv; | |
849 | { | |
850 | if (GvGP(gv)->gp_hv) | |
851 | return GvGP(gv)->gp_hv; | |
852 | else | |
853 | return GvGP(gv_HVadd(gv))->gp_hv; | |
854 | } | |
855 | #endif /* Microport 2.4 hack */ | |
a0d0e21e LW |
856 | |
857 | #ifdef OVERLOAD | |
858 | /* Updates and caches the CV's */ | |
859 | ||
860 | bool | |
861 | Gv_AMupdate(stash) | |
862 | HV* stash; | |
863 | { | |
864 | GV** gvp; | |
865 | HV* hv; | |
866 | GV* gv; | |
867 | CV* cv; | |
868 | MAGIC* mg=mg_find((SV*)stash,'c'); | |
748a9306 | 869 | AMT *amtp=mg ? (AMT*)mg->mg_ptr: NULL; |
a6006777 | 870 | AMT amt; |
a0d0e21e LW |
871 | |
872 | if (mg && (amtp=((AMT*)(mg->mg_ptr)))->was_ok_am == amagic_generation && | |
873 | amtp->was_ok_sub == sub_generation) | |
a6006777 | 874 | return AMT_AMAGIC(amtp); |
875 | if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */ | |
748a9306 | 876 | int i; |
a6006777 | 877 | for (i=1; i<NofAMmeth; i++) { |
748a9306 LW |
878 | if (amtp->table[i]) { |
879 | SvREFCNT_dec(amtp->table[i]); | |
880 | } | |
881 | } | |
882 | } | |
a0d0e21e LW |
883 | sv_unmagic((SV*)stash, 'c'); |
884 | ||
885 | DEBUG_o( deb("Recalcing overload magic in package %s\n",HvNAME(stash)) ); | |
886 | ||
a6006777 | 887 | amt.was_ok_am = amagic_generation; |
888 | amt.was_ok_sub = sub_generation; | |
889 | amt.fallback = AMGfallNO; | |
890 | amt.flags = 0; | |
891 | ||
892 | #ifdef OVERLOAD_VIA_HASH | |
893 | gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */ | |
a0d0e21e LW |
894 | if (gvp && ((gv = *gvp) != (GV*)&sv_undef && (hv = GvHV(gv)))) { |
895 | int filled=0; | |
896 | int i; | |
897 | char *cp; | |
a0d0e21e LW |
898 | SV* sv; |
899 | SV** svp; | |
a0d0e21e LW |
900 | |
901 | /* Work with "fallback" key, which we assume to be first in AMG_names */ | |
902 | ||
a6006777 | 903 | if (( cp = (char *)AMG_names[0] ) && |
904 | (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) { | |
a0d0e21e LW |
905 | if (SvTRUE(sv)) amt.fallback=AMGfallYES; |
906 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; | |
907 | } | |
a6006777 | 908 | for (i = 1; i < NofAMmeth; i++) { |
909 | cv = 0; | |
910 | cp = (char *)AMG_names[i]; | |
911 | ||
912 | svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE); | |
dc437b57 | 913 | if (svp && ((sv = *svp) != &sv_undef)) { |
a0d0e21e LW |
914 | switch (SvTYPE(sv)) { |
915 | default: | |
916 | if (!SvROK(sv)) { | |
917 | if (!SvOK(sv)) break; | |
748a9306 | 918 | gv = gv_fetchmethod(stash, SvPV(sv, na)); |
a0d0e21e LW |
919 | if (gv) cv = GvCV(gv); |
920 | break; | |
921 | } | |
922 | cv = (CV*)SvRV(sv); | |
923 | if (SvTYPE(cv) == SVt_PVCV) | |
924 | break; | |
925 | /* FALL THROUGH */ | |
926 | case SVt_PVHV: | |
927 | case SVt_PVAV: | |
a6006777 | 928 | croak("Not a subroutine reference in overload table"); |
a0d0e21e LW |
929 | return FALSE; |
930 | case SVt_PVCV: | |
8ebc5c01 | 931 | cv = (CV*)sv; |
932 | break; | |
a0d0e21e | 933 | case SVt_PVGV: |
8ebc5c01 | 934 | if (!(cv = GvCVu((GV*)sv))) |
935 | cv = sv_2cv(sv, &stash, &gv, TRUE); | |
936 | break; | |
a0d0e21e LW |
937 | } |
938 | if (cv) filled=1; | |
939 | else { | |
a6006777 | 940 | croak("Method for operation %s not found in package %.256s during blessing\n", |
a0d0e21e LW |
941 | cp,HvNAME(stash)); |
942 | return FALSE; | |
943 | } | |
944 | } | |
a6006777 | 945 | #else |
946 | { | |
947 | int filled = 0; | |
948 | int i; | |
949 | char *cp; | |
950 | SV* sv = NULL; | |
951 | SV** svp; | |
952 | ||
953 | /* Work with "fallback" key, which we assume to be first in AMG_names */ | |
954 | ||
955 | if ( cp = (char *)AMG_names[0] ) { | |
956 | /* Try to find via inheritance. */ | |
957 | gv = gv_fetchmeth(stash, "()", 2, 0); /* A cooky: "()". */ | |
958 | if (gv) sv = GvSV(gv); | |
959 | ||
960 | if (!sv) /* Empty */; | |
961 | else if (SvTRUE(sv)) amt.fallback=AMGfallYES; | |
962 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; | |
963 | } | |
964 | ||
965 | for (i = 1; i < NofAMmeth; i++) { | |
966 | cv = 0; | |
967 | cp = (char *)AMG_names[i]; | |
968 | ||
969 | *buf = '('; /* A cooky: "(". */ | |
970 | strcpy(buf + 1, cp); | |
971 | gv = gv_fetchmeth(stash, buf, strlen(buf), 0); /* fills the stash! */ | |
972 | if(gv && (cv = GvCV(gv))) filled = 1; | |
973 | #endif | |
974 | amt.table[i]=(CV*)SvREFCNT_inc(cv); | |
a0d0e21e | 975 | } |
a0d0e21e | 976 | if (filled) { |
a6006777 | 977 | AMT_AMAGIC_on(&amt); |
978 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT)); | |
a0d0e21e LW |
979 | return TRUE; |
980 | } | |
981 | } | |
a6006777 | 982 | /* Here we have no table: */ |
983 | AMT_AMAGIC_off(&amt); | |
984 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS)); | |
a0d0e21e LW |
985 | return FALSE; |
986 | } | |
987 | ||
988 | /* During call to this subroutine stack can be reallocated. It is | |
989 | * advised to call SPAGAIN macro in your code after call */ | |
990 | ||
991 | SV* | |
992 | amagic_call(left,right,method,flags) | |
993 | SV* left; | |
994 | SV* right; | |
995 | int method; | |
996 | int flags; | |
997 | { | |
998 | MAGIC *mg; | |
999 | CV *cv; | |
1000 | CV **cvp=NULL, **ocvp=NULL; | |
1001 | AMT *amtp, *oamtp; | |
1002 | int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0; | |
748a9306 | 1003 | int postpr=0, inc_dec_ass=0, assignshift=assign?1:0; |
a0d0e21e LW |
1004 | HV* stash; |
1005 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) | |
1006 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c')) | |
a6006777 | 1007 | && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1008 | ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table | |
1009 | : NULL)) | |
748a9306 LW |
1010 | && ((cv = cvp[off=method+assignshift]) |
1011 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to | |
1012 | * usual method */ | |
1013 | (fl = 1, cv = cvp[off=method])))) { | |
a0d0e21e LW |
1014 | lr = -1; /* Call method for left argument */ |
1015 | } else { | |
1016 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { | |
1017 | int logic; | |
1018 | ||
1019 | /* look for substituted methods */ | |
1020 | switch (method) { | |
1021 | case inc_amg: | |
748a9306 | 1022 | if (((cv = cvp[off=add_ass_amg]) && (inc_dec_ass=1)) |
a0d0e21e LW |
1023 | || ((cv = cvp[off=add_amg]) && (postpr=1))) { |
1024 | right = &sv_yes; lr = -1; assign = 1; | |
1025 | } | |
1026 | break; | |
1027 | case dec_amg: | |
748a9306 | 1028 | if (((cv = cvp[off=subtr_ass_amg]) && (inc_dec_ass=1)) |
a0d0e21e LW |
1029 | || ((cv = cvp[off=subtr_amg]) && (postpr=1))) { |
1030 | right = &sv_yes; lr = -1; assign = 1; | |
1031 | } | |
1032 | break; | |
1033 | case bool__amg: | |
1034 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); | |
1035 | break; | |
1036 | case numer_amg: | |
1037 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); | |
1038 | break; | |
1039 | case string_amg: | |
1040 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); | |
1041 | break; | |
dc437b57 | 1042 | case not_amg: |
1043 | (void)((cv = cvp[off=bool__amg]) | |
1044 | || (cv = cvp[off=numer_amg]) | |
1045 | || (cv = cvp[off=string_amg])); | |
1046 | postpr = 1; | |
1047 | break; | |
748a9306 LW |
1048 | case copy_amg: |
1049 | { | |
1050 | SV* ref=SvRV(left); | |
1051 | if (!SvROK(ref) && SvTYPE(ref) <= SVt_PVMG) { /* Just to be | |
1052 | * extra | |
1053 | * causious, | |
1054 | * maybe in some | |
1055 | * additional | |
1056 | * cases sv_setsv | |
1057 | * is safe too */ | |
1058 | SV* newref = newSVsv(ref); | |
1059 | SvOBJECT_on(newref); | |
1060 | SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(ref)); | |
1061 | return newref; | |
1062 | } | |
1063 | } | |
1064 | break; | |
a0d0e21e | 1065 | case abs_amg: |
748a9306 | 1066 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e | 1067 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
748a9306 | 1068 | SV* nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e | 1069 | if (off1==lt_amg) { |
748a9306 | 1070 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1071 | lt_amg,AMGf_noright); |
1072 | logic = SvTRUE(lessp); | |
1073 | } else { | |
748a9306 | 1074 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1075 | ncmp_amg,AMGf_noright); |
1076 | logic = (SvNV(lessp) < 0); | |
1077 | } | |
1078 | if (logic) { | |
1079 | if (off==subtr_amg) { | |
1080 | right = left; | |
748a9306 | 1081 | left = nullsv; |
a0d0e21e LW |
1082 | lr = 1; |
1083 | } | |
1084 | } else { | |
1085 | return left; | |
1086 | } | |
1087 | } | |
1088 | break; | |
1089 | case neg_amg: | |
1090 | if (cv = cvp[off=subtr_amg]) { | |
1091 | right = left; | |
1092 | left = sv_2mortal(newSViv(0)); | |
1093 | lr = 1; | |
1094 | } | |
1095 | break; | |
1096 | default: | |
1097 | goto not_found; | |
1098 | } | |
1099 | if (!cv) goto not_found; | |
1100 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) | |
1101 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c')) | |
a6006777 | 1102 | && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1103 | ? (amtp = (AMT*)mg->mg_ptr)->table | |
1104 | : NULL)) | |
a0d0e21e LW |
1105 | && (cv = cvp[off=method])) { /* Method for right |
1106 | * argument found */ | |
1107 | lr=1; | |
748a9306 | 1108 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
4633a7c4 | 1109 | && (cvp=ocvp) && (lr = -1)) |
a0d0e21e LW |
1110 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
1111 | && !(flags & AMGf_unary)) { | |
1112 | /* We look for substitution for | |
1113 | * comparison operations and | |
1114 | * concatendation */ | |
1115 | if (method==concat_amg || method==concat_ass_amg | |
1116 | || method==repeat_amg || method==repeat_ass_amg) { | |
1117 | return NULL; /* Delegate operation to string conversion */ | |
1118 | } | |
1119 | off = -1; | |
1120 | switch (method) { | |
1121 | case lt_amg: | |
1122 | case le_amg: | |
1123 | case gt_amg: | |
1124 | case ge_amg: | |
1125 | case eq_amg: | |
1126 | case ne_amg: | |
1127 | postpr = 1; off=ncmp_amg; break; | |
1128 | case slt_amg: | |
1129 | case sle_amg: | |
1130 | case sgt_amg: | |
1131 | case sge_amg: | |
1132 | case seq_amg: | |
1133 | case sne_amg: | |
1134 | postpr = 1; off=scmp_amg; break; | |
1135 | } | |
1136 | if (off != -1) cv = cvp[off]; | |
1137 | if (!cv) { | |
1138 | goto not_found; | |
1139 | } | |
1140 | } else { | |
a6006777 | 1141 | not_found: /* No method found, either report or croak */ |
a0d0e21e LW |
1142 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
1143 | notfound = 1; lr = -1; | |
1144 | } else if (cvp && (cv=cvp[nomethod_amg])) { | |
1145 | notfound = 1; lr = 1; | |
1146 | } else { | |
748a9306 | 1147 | if (off==-1) off=method; |
06b43eb7 | 1148 | sprintf(buf, "Operation `%s': no method found,\n\tleft argument %s%.256s,\n\tright argument %s%.256s", |
a6006777 | 1149 | AMG_names[method + assignshift], |
a0d0e21e LW |
1150 | SvAMAGIC(left)? |
1151 | "in overloaded package ": | |
1152 | "has no overloaded magic", | |
1153 | SvAMAGIC(left)? | |
1154 | HvNAME(SvSTASH(SvRV(left))): | |
1155 | "", | |
1156 | SvAMAGIC(right)? | |
1157 | "in overloaded package ": | |
1158 | "has no overloaded magic", | |
1159 | SvAMAGIC(right)? | |
1160 | HvNAME(SvSTASH(SvRV(right))): | |
1161 | ""); | |
1162 | if (amtp && amtp->fallback >= AMGfallYES) { | |
06b43eb7 | 1163 | DEBUG_o( deb(buf) ); |
a0d0e21e | 1164 | } else { |
a6006777 | 1165 | croak(buf); |
a0d0e21e LW |
1166 | } |
1167 | return NULL; | |
1168 | } | |
1169 | } | |
1170 | } | |
1171 | if (!notfound) { | |
06b43eb7 | 1172 | DEBUG_o( deb("Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %.256s%s\n", |
a6006777 | 1173 | AMG_names[off], |
748a9306 LW |
1174 | method+assignshift==off? "" : |
1175 | " (initially `", | |
1176 | method+assignshift==off? "" : | |
a6006777 | 1177 | AMG_names[method+assignshift], |
748a9306 LW |
1178 | method+assignshift==off? "" : "')", |
1179 | flags & AMGf_unary? "" : | |
1180 | lr==1 ? " for right argument": " for left argument", | |
1181 | flags & AMGf_unary? " for argument" : "", | |
a0d0e21e LW |
1182 | HvNAME(stash), |
1183 | fl? ",\n\tassignment variant used": "") ); | |
748a9306 LW |
1184 | /* Since we use shallow copy during assignment, we need |
1185 | * to dublicate the contents, probably calling user-supplied | |
1186 | * version of copy operator | |
1187 | */ | |
c07a80fd | 1188 | if ((method + assignshift==off |
748a9306 LW |
1189 | && (assign || method==inc_amg || method==dec_amg)) |
1190 | || inc_dec_ass) RvDEEPCP(left); | |
a0d0e21e LW |
1191 | } |
1192 | { | |
1193 | dSP; | |
1194 | BINOP myop; | |
1195 | SV* res; | |
1196 | ||
1197 | Zero(&myop, 1, BINOP); | |
1198 | myop.op_last = (OP *) &myop; | |
1199 | myop.op_next = Nullop; | |
1200 | myop.op_flags = OPf_KNOW|OPf_STACKED; | |
1201 | ||
1202 | ENTER; | |
1203 | SAVESPTR(op); | |
1204 | op = (OP *) &myop; | |
dc437b57 | 1205 | if (perldb && curstash != debstash) |
1206 | op->op_private |= OPpENTERSUB_DB; | |
a0d0e21e LW |
1207 | PUTBACK; |
1208 | pp_pushmark(); | |
1209 | ||
1210 | EXTEND(sp, notfound + 5); | |
1211 | PUSHs(lr>0? right: left); | |
1212 | PUSHs(lr>0? left: right); | |
1213 | PUSHs( assign ? &sv_undef : (lr>0? &sv_yes: &sv_no)); | |
1214 | if (notfound) { | |
a6006777 | 1215 | PUSHs( sv_2mortal(newSVpv((char *)AMG_names[method + assignshift],0)) ); |
a0d0e21e LW |
1216 | } |
1217 | PUSHs((SV*)cv); | |
1218 | PUTBACK; | |
1219 | ||
1220 | if (op = pp_entersub()) | |
ad8898e0 | 1221 | runops(); |
a0d0e21e LW |
1222 | LEAVE; |
1223 | SPAGAIN; | |
1224 | ||
1225 | res=POPs; | |
1226 | PUTBACK; | |
1227 | ||
1228 | if (notfound) { | |
1229 | /* sv_2mortal(res); */ | |
1230 | return NULL; | |
1231 | } | |
1232 | ||
1233 | if (postpr) { | |
1234 | int ans; | |
1235 | switch (method) { | |
1236 | case le_amg: | |
1237 | case sle_amg: | |
1238 | ans=SvIV(res)<=0; break; | |
1239 | case lt_amg: | |
1240 | case slt_amg: | |
1241 | ans=SvIV(res)<0; break; | |
1242 | case ge_amg: | |
1243 | case sge_amg: | |
1244 | ans=SvIV(res)>=0; break; | |
1245 | case gt_amg: | |
1246 | case sgt_amg: | |
1247 | ans=SvIV(res)>0; break; | |
1248 | case eq_amg: | |
1249 | case seq_amg: | |
1250 | ans=SvIV(res)==0; break; | |
1251 | case ne_amg: | |
1252 | case sne_amg: | |
1253 | ans=SvIV(res)!=0; break; | |
1254 | case inc_amg: | |
1255 | case dec_amg: | |
bbce6d69 | 1256 | SvSetSV(left,res); return left; |
dc437b57 | 1257 | case not_amg: |
1258 | ans=!SvOK(res); break; | |
a0d0e21e LW |
1259 | } |
1260 | return ans? &sv_yes: &sv_no; | |
748a9306 LW |
1261 | } else if (method==copy_amg) { |
1262 | if (!SvROK(res)) { | |
a6006777 | 1263 | croak("Copy method did not return a reference"); |
748a9306 LW |
1264 | } |
1265 | return SvREFCNT_inc(SvRV(res)); | |
a0d0e21e LW |
1266 | } else { |
1267 | return res; | |
1268 | } | |
1269 | } | |
1270 | } | |
1271 | #endif /* OVERLOAD */ |