Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* gv.c |
79072805 | 2 | * |
4eb8286e | 3 | * Copyright (c) 1991-1999, 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" | |
864dbfa3 | 20 | #define PERL_IN_GV_C |
79072805 LW |
21 | #include "perl.h" |
22 | ||
23 | GV * | |
864dbfa3 | 24 | Perl_gv_AVadd(pTHX_ register GV *gv) |
79072805 | 25 | { |
a0d0e21e | 26 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
cea2e8a9 | 27 | Perl_croak(aTHX_ "Bad symbol for array"); |
79072805 LW |
28 | if (!GvAV(gv)) |
29 | GvAV(gv) = newAV(); | |
30 | return gv; | |
31 | } | |
32 | ||
33 | GV * | |
864dbfa3 | 34 | Perl_gv_HVadd(pTHX_ register GV *gv) |
79072805 | 35 | { |
a0d0e21e | 36 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) |
cea2e8a9 | 37 | Perl_croak(aTHX_ "Bad symbol for hash"); |
79072805 | 38 | if (!GvHV(gv)) |
463ee0b2 | 39 | GvHV(gv) = newHV(); |
79072805 LW |
40 | return gv; |
41 | } | |
42 | ||
43 | GV * | |
864dbfa3 | 44 | Perl_gv_IOadd(pTHX_ register GV *gv) |
a0d0e21e LW |
45 | { |
46 | if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) | |
cea2e8a9 | 47 | Perl_croak(aTHX_ "Bad symbol for filehandle"); |
a0d0e21e LW |
48 | if (!GvIOp(gv)) |
49 | GvIOp(gv) = newIO(); | |
50 | return gv; | |
51 | } | |
52 | ||
53 | GV * | |
864dbfa3 | 54 | Perl_gv_fetchfile(pTHX_ const char *name) |
79072805 | 55 | { |
e858de61 | 56 | dTHR; |
53d95988 CS |
57 | char smallbuf[256]; |
58 | char *tmpbuf; | |
8ebc5c01 | 59 | STRLEN tmplen; |
79072805 LW |
60 | GV *gv; |
61 | ||
53d95988 CS |
62 | tmplen = strlen(name) + 2; |
63 | if (tmplen < sizeof smallbuf) | |
64 | tmpbuf = smallbuf; | |
65 | else | |
66 | New(603, tmpbuf, tmplen + 1, char); | |
67 | tmpbuf[0] = '_'; | |
68 | tmpbuf[1] = '<'; | |
69 | strcpy(tmpbuf + 2, name); | |
3280af22 | 70 | gv = *(GV**)hv_fetch(PL_defstash, tmpbuf, tmplen, TRUE); |
b195d487 | 71 | if (!isGV(gv)) { |
3280af22 | 72 | gv_init(gv, PL_defstash, tmpbuf, tmplen, FALSE); |
b195d487 GS |
73 | sv_setpv(GvSV(gv), name); |
74 | if (*name == '/' && (instr(name, "/lib/") || instr(name, ".pm"))) | |
75 | GvMULTI_on(gv); | |
76 | if (PERLDB_LINE) | |
77 | hv_magic(GvHVn(gv_AVadd(gv)), gv, 'L'); | |
78 | } | |
53d95988 CS |
79 | if (tmpbuf != smallbuf) |
80 | Safefree(tmpbuf); | |
79072805 LW |
81 | return gv; |
82 | } | |
83 | ||
463ee0b2 | 84 | void |
864dbfa3 | 85 | Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi) |
463ee0b2 | 86 | { |
0f15f207 | 87 | dTHR; |
463ee0b2 | 88 | register GP *gp; |
55d729e4 GS |
89 | bool doproto = SvTYPE(gv) > SVt_NULL; |
90 | char *proto = (doproto && SvPOK(gv)) ? SvPVX(gv) : NULL; | |
463ee0b2 | 91 | |
dc437b57 | 92 | sv_upgrade((SV*)gv, SVt_PVGV); |
55d729e4 GS |
93 | if (SvLEN(gv)) { |
94 | if (proto) { | |
95 | SvPVX(gv) = NULL; | |
96 | SvLEN(gv) = 0; | |
97 | SvPOK_off(gv); | |
98 | } else | |
99 | Safefree(SvPVX(gv)); | |
100 | } | |
44a8e56a | 101 | Newz(602, gp, 1, GP); |
8990e307 | 102 | GvGP(gv) = gp_ref(gp); |
463ee0b2 | 103 | GvSV(gv) = NEWSV(72,0); |
cc49e20b GS |
104 | GvLINE(gv) = CopLINE(PL_curcop); |
105 | GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : ""; | |
005a453c | 106 | GvCVGEN(gv) = 0; |
463ee0b2 LW |
107 | GvEGV(gv) = gv; |
108 | sv_magic((SV*)gv, (SV*)gv, '*', name, len); | |
85aff577 | 109 | GvSTASH(gv) = (HV*)SvREFCNT_inc(stash); |
a0d0e21e | 110 | GvNAME(gv) = savepvn(name, len); |
463ee0b2 | 111 | GvNAMELEN(gv) = len; |
23ad5bf5 | 112 | if (multi || doproto) /* doproto means it _was_ mentioned */ |
a5f75d66 | 113 | GvMULTI_on(gv); |
55d729e4 | 114 | if (doproto) { /* Replicate part of newSUB here. */ |
57ff9a15 | 115 | SvIOK_off(gv); |
55d729e4 | 116 | ENTER; |
b099ddc0 | 117 | /* XXX unsafe for threads if eval_owner isn't held */ |
55d729e4 | 118 | start_subparse(0,0); /* Create CV in compcv. */ |
3280af22 | 119 | GvCV(gv) = PL_compcv; |
55d729e4 GS |
120 | LEAVE; |
121 | ||
3280af22 | 122 | PL_sub_generation++; |
55d729e4 | 123 | CvGV(GvCV(gv)) = (GV*)SvREFCNT_inc(gv); |
3280af22 | 124 | CvSTASH(GvCV(gv)) = PL_curstash; |
55d729e4 GS |
125 | #ifdef USE_THREADS |
126 | CvOWNER(GvCV(gv)) = 0; | |
1cfa4ec7 | 127 | if (!CvMUTEXP(GvCV(gv))) { |
b0a484d2 | 128 | New(666, CvMUTEXP(GvCV(gv)), 1, perl_mutex); |
1cfa4ec7 GS |
129 | MUTEX_INIT(CvMUTEXP(GvCV(gv))); |
130 | } | |
55d729e4 GS |
131 | #endif /* USE_THREADS */ |
132 | if (proto) { | |
133 | sv_setpv((SV*)GvCV(gv), proto); | |
134 | Safefree(proto); | |
135 | } | |
136 | } | |
463ee0b2 LW |
137 | } |
138 | ||
76e3520e | 139 | STATIC void |
cea2e8a9 | 140 | S_gv_init_sv(pTHX_ GV *gv, I32 sv_type) |
a0d0e21e LW |
141 | { |
142 | switch (sv_type) { | |
143 | case SVt_PVIO: | |
144 | (void)GvIOn(gv); | |
145 | break; | |
146 | case SVt_PVAV: | |
147 | (void)GvAVn(gv); | |
148 | break; | |
149 | case SVt_PVHV: | |
150 | (void)GvHVn(gv); | |
151 | break; | |
152 | } | |
153 | } | |
154 | ||
79072805 | 155 | GV * |
864dbfa3 | 156 | Perl_gv_fetchmeth(pTHX_ HV *stash, const char *name, STRLEN len, I32 level) |
79072805 LW |
157 | { |
158 | AV* av; | |
463ee0b2 | 159 | GV* topgv; |
79072805 | 160 | GV* gv; |
463ee0b2 | 161 | GV** gvp; |
748a9306 | 162 | CV* cv; |
a0d0e21e LW |
163 | |
164 | if (!stash) | |
165 | return 0; | |
44a8e56a | 166 | if ((level > 100) || (level < -100)) |
cea2e8a9 | 167 | Perl_croak(aTHX_ "Recursive inheritance detected while looking for method '%s' in package '%s'", |
3e0ccd42 | 168 | name, HvNAME(stash)); |
463ee0b2 | 169 | |
cea2e8a9 | 170 | DEBUG_o( Perl_deb(aTHX_ "Looking for method %s in package %s\n",name,HvNAME(stash)) ); |
44a8e56a | 171 | |
172 | gvp = (GV**)hv_fetch(stash, name, len, (level >= 0)); | |
173 | if (!gvp) | |
174 | topgv = Nullgv; | |
175 | else { | |
176 | topgv = *gvp; | |
177 | if (SvTYPE(topgv) != SVt_PVGV) | |
178 | gv_init(topgv, stash, name, len, TRUE); | |
179 | if (cv = GvCV(topgv)) { | |
180 | /* If genuine method or valid cache entry, use it */ | |
3280af22 | 181 | if (!GvCVGEN(topgv) || GvCVGEN(topgv) == PL_sub_generation) |
7a4c00b4 | 182 | return topgv; |
44a8e56a | 183 | /* Stale cached entry: junk it */ |
184 | SvREFCNT_dec(cv); | |
185 | GvCV(topgv) = cv = Nullcv; | |
186 | GvCVGEN(topgv) = 0; | |
748a9306 | 187 | } |
3280af22 | 188 | else if (GvCVGEN(topgv) == PL_sub_generation) |
005a453c | 189 | return 0; /* cache indicates sub doesn't exist */ |
463ee0b2 | 190 | } |
79072805 | 191 | |
9607fc9c | 192 | gvp = (GV**)hv_fetch(stash, "ISA", 3, FALSE); |
3280af22 | 193 | av = (gvp && (gv = *gvp) && gv != (GV*)&PL_sv_undef) ? GvAV(gv) : Nullav; |
9607fc9c | 194 | |
fb73857a | 195 | /* create and re-create @.*::SUPER::ISA on demand */ |
196 | if (!av || !SvMAGIC(av)) { | |
9607fc9c | 197 | char* packname = HvNAME(stash); |
198 | STRLEN packlen = strlen(packname); | |
199 | ||
200 | if (packlen >= 7 && strEQ(packname + packlen - 7, "::SUPER")) { | |
201 | HV* basestash; | |
202 | ||
203 | packlen -= 7; | |
204 | basestash = gv_stashpvn(packname, packlen, TRUE); | |
205 | gvp = (GV**)hv_fetch(basestash, "ISA", 3, FALSE); | |
3280af22 | 206 | if (gvp && (gv = *gvp) != (GV*)&PL_sv_undef && (av = GvAV(gv))) { |
e858de61 | 207 | dTHR; /* just for SvREFCNT_dec */ |
9607fc9c | 208 | gvp = (GV**)hv_fetch(stash, "ISA", 3, TRUE); |
209 | if (!gvp || !(gv = *gvp)) | |
cea2e8a9 | 210 | Perl_croak(aTHX_ "Cannot create %s::ISA", HvNAME(stash)); |
9607fc9c | 211 | if (SvTYPE(gv) != SVt_PVGV) |
212 | gv_init(gv, stash, "ISA", 3, TRUE); | |
213 | SvREFCNT_dec(GvAV(gv)); | |
214 | GvAV(gv) = (AV*)SvREFCNT_inc(av); | |
215 | } | |
216 | } | |
217 | } | |
218 | ||
219 | if (av) { | |
79072805 | 220 | SV** svp = AvARRAY(av); |
93965878 NIS |
221 | /* NOTE: No support for tied ISA */ |
222 | I32 items = AvFILLp(av) + 1; | |
79072805 | 223 | while (items--) { |
79072805 | 224 | SV* sv = *svp++; |
a0d0e21e | 225 | HV* basestash = gv_stashsv(sv, FALSE); |
9bbf4081 | 226 | if (!basestash) { |
d008e5eb | 227 | dTHR; /* just for ckWARN */ |
599cee73 | 228 | if (ckWARN(WARN_MISC)) |
cea2e8a9 | 229 | Perl_warner(aTHX_ WARN_MISC, "Can't locate package %s for @%s::ISA", |
463ee0b2 | 230 | SvPVX(sv), HvNAME(stash)); |
79072805 LW |
231 | continue; |
232 | } | |
44a8e56a | 233 | gv = gv_fetchmeth(basestash, name, len, |
234 | (level >= 0) ? level + 1 : level - 1); | |
235 | if (gv) | |
236 | goto gotcha; | |
79072805 LW |
237 | } |
238 | } | |
a0d0e21e | 239 | |
9607fc9c | 240 | /* if at top level, try UNIVERSAL */ |
241 | ||
44a8e56a | 242 | if (level == 0 || level == -1) { |
9607fc9c | 243 | HV* lastchance; |
244 | ||
dc437b57 | 245 | if (lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE)) { |
44a8e56a | 246 | if (gv = gv_fetchmeth(lastchance, name, len, |
247 | (level >= 0) ? level + 1 : level - 1)) { | |
248 | gotcha: | |
dc848c6f | 249 | /* |
250 | * Cache method in topgv if: | |
251 | * 1. topgv has no synonyms (else inheritance crosses wires) | |
252 | * 2. method isn't a stub (else AUTOLOAD fails spectacularly) | |
253 | */ | |
254 | if (topgv && | |
255 | GvREFCNT(topgv) == 1 && | |
256 | (cv = GvCV(gv)) && | |
257 | (CvROOT(cv) || CvXSUB(cv))) | |
258 | { | |
44a8e56a | 259 | if (cv = GvCV(topgv)) |
260 | SvREFCNT_dec(cv); | |
261 | GvCV(topgv) = (CV*)SvREFCNT_inc(GvCV(gv)); | |
3280af22 | 262 | GvCVGEN(topgv) = PL_sub_generation; |
44a8e56a | 263 | } |
a0d0e21e LW |
264 | return gv; |
265 | } | |
005a453c JP |
266 | else if (topgv && GvREFCNT(topgv) == 1) { |
267 | /* cache the fact that the method is not defined */ | |
3280af22 | 268 | GvCVGEN(topgv) = PL_sub_generation; |
005a453c | 269 | } |
a0d0e21e LW |
270 | } |
271 | } | |
272 | ||
79072805 LW |
273 | return 0; |
274 | } | |
275 | ||
276 | GV * | |
864dbfa3 | 277 | Perl_gv_fetchmethod(pTHX_ HV *stash, const char *name) |
463ee0b2 | 278 | { |
dc848c6f | 279 | return gv_fetchmethod_autoload(stash, name, TRUE); |
280 | } | |
281 | ||
282 | GV * | |
864dbfa3 | 283 | Perl_gv_fetchmethod_autoload(pTHX_ HV *stash, const char *name, I32 autoload) |
dc848c6f | 284 | { |
0f15f207 | 285 | dTHR; |
08105a92 GS |
286 | register const char *nend; |
287 | const char *nsplit = 0; | |
a0d0e21e | 288 | GV* gv; |
463ee0b2 LW |
289 | |
290 | for (nend = name; *nend; nend++) { | |
9607fc9c | 291 | if (*nend == '\'') |
a0d0e21e | 292 | nsplit = nend; |
9607fc9c | 293 | else if (*nend == ':' && *(nend + 1) == ':') |
294 | nsplit = ++nend; | |
a0d0e21e LW |
295 | } |
296 | if (nsplit) { | |
08105a92 | 297 | const char *origname = name; |
a0d0e21e | 298 | name = nsplit + 1; |
a0d0e21e LW |
299 | if (*nsplit == ':') |
300 | --nsplit; | |
9607fc9c | 301 | if ((nsplit - origname) == 5 && strnEQ(origname, "SUPER", 5)) { |
302 | /* ->SUPER::method should really be looked up in original stash */ | |
cea2e8a9 | 303 | SV *tmpstr = sv_2mortal(Perl_newSVpvf(aTHX_ "%s::SUPER", |
3280af22 | 304 | HvNAME(PL_curcop->cop_stash))); |
9607fc9c | 305 | stash = gv_stashpvn(SvPVX(tmpstr), SvCUR(tmpstr), TRUE); |
cea2e8a9 | 306 | DEBUG_o( Perl_deb(aTHX_ "Treating %s as %s::%s\n", |
9607fc9c | 307 | origname, HvNAME(stash), name) ); |
4633a7c4 | 308 | } |
9607fc9c | 309 | else |
310 | stash = gv_stashpvn(origname, nsplit - origname, TRUE); | |
4633a7c4 LW |
311 | } |
312 | ||
9607fc9c | 313 | gv = gv_fetchmeth(stash, name, nend - name, 0); |
a0d0e21e | 314 | if (!gv) { |
702887b4 | 315 | if (strEQ(name,"import")) |
3280af22 | 316 | gv = (GV*)&PL_sv_yes; |
dc848c6f | 317 | else if (autoload) |
54310121 | 318 | gv = gv_autoload4(stash, name, nend - name, TRUE); |
463ee0b2 | 319 | } |
dc848c6f | 320 | else if (autoload) { |
321 | CV* cv = GvCV(gv); | |
09280a33 CS |
322 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
323 | GV* stubgv; | |
324 | GV* autogv; | |
325 | ||
326 | if (CvANON(cv)) | |
327 | stubgv = gv; | |
328 | else { | |
329 | stubgv = CvGV(cv); | |
330 | if (GvCV(stubgv) != cv) /* orphaned import */ | |
331 | stubgv = gv; | |
332 | } | |
333 | autogv = gv_autoload4(GvSTASH(stubgv), | |
334 | GvNAME(stubgv), GvNAMELEN(stubgv), TRUE); | |
dc848c6f | 335 | if (autogv) |
336 | gv = autogv; | |
337 | } | |
338 | } | |
44a8e56a | 339 | |
340 | return gv; | |
341 | } | |
342 | ||
343 | GV* | |
864dbfa3 | 344 | Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method) |
44a8e56a | 345 | { |
d008e5eb | 346 | dTHR; |
44a8e56a | 347 | static char autoload[] = "AUTOLOAD"; |
348 | static STRLEN autolen = 8; | |
349 | GV* gv; | |
350 | CV* cv; | |
351 | HV* varstash; | |
352 | GV* vargv; | |
353 | SV* varsv; | |
354 | ||
355 | if (len == autolen && strnEQ(name, autoload, autolen)) | |
356 | return Nullgv; | |
dc848c6f | 357 | if (!(gv = gv_fetchmeth(stash, autoload, autolen, FALSE))) |
358 | return Nullgv; | |
359 | cv = GvCV(gv); | |
360 | ||
361 | /* | |
362 | * Inheriting AUTOLOAD for non-methods works ... for now. | |
363 | */ | |
599cee73 PM |
364 | if (ckWARN(WARN_DEPRECATED) && !method && |
365 | (GvCVGEN(gv) || GvSTASH(gv) != stash)) | |
cea2e8a9 | 366 | Perl_warner(aTHX_ WARN_DEPRECATED, |
dc848c6f | 367 | "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated", |
368 | HvNAME(stash), (int)len, name); | |
44a8e56a | 369 | |
370 | /* | |
371 | * Given &FOO::AUTOLOAD, set $FOO::AUTOLOAD to desired function name. | |
372 | * The subroutine's original name may not be "AUTOLOAD", so we don't | |
373 | * use that, but for lack of anything better we will use the sub's | |
374 | * original package to look up $AUTOLOAD. | |
375 | */ | |
376 | varstash = GvSTASH(CvGV(cv)); | |
377 | vargv = *(GV**)hv_fetch(varstash, autoload, autolen, TRUE); | |
378 | if (!isGV(vargv)) | |
379 | gv_init(vargv, varstash, autoload, autolen, FALSE); | |
380 | varsv = GvSV(vargv); | |
381 | sv_setpv(varsv, HvNAME(stash)); | |
382 | sv_catpvn(varsv, "::", 2); | |
383 | sv_catpvn(varsv, name, len); | |
384 | SvTAINTED_off(varsv); | |
a0d0e21e LW |
385 | return gv; |
386 | } | |
387 | ||
388 | HV* | |
864dbfa3 | 389 | Perl_gv_stashpv(pTHX_ const char *name, I32 create) |
a0d0e21e | 390 | { |
dc437b57 | 391 | return gv_stashpvn(name, strlen(name), create); |
392 | } | |
393 | ||
394 | HV* | |
864dbfa3 | 395 | Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 create) |
dc437b57 | 396 | { |
46fc3d4c | 397 | char smallbuf[256]; |
398 | char *tmpbuf; | |
a0d0e21e LW |
399 | HV *stash; |
400 | GV *tmpgv; | |
dc437b57 | 401 | |
46fc3d4c | 402 | if (namelen + 3 < sizeof smallbuf) |
403 | tmpbuf = smallbuf; | |
404 | else | |
405 | New(606, tmpbuf, namelen + 3, char); | |
dc437b57 | 406 | Copy(name,tmpbuf,namelen,char); |
407 | tmpbuf[namelen++] = ':'; | |
408 | tmpbuf[namelen++] = ':'; | |
409 | tmpbuf[namelen] = '\0'; | |
46fc3d4c | 410 | tmpgv = gv_fetchpv(tmpbuf, create, SVt_PVHV); |
411 | if (tmpbuf != smallbuf) | |
412 | Safefree(tmpbuf); | |
a0d0e21e LW |
413 | if (!tmpgv) |
414 | return 0; | |
415 | if (!GvHV(tmpgv)) | |
416 | GvHV(tmpgv) = newHV(); | |
417 | stash = GvHV(tmpgv); | |
418 | if (!HvNAME(stash)) | |
419 | HvNAME(stash) = savepv(name); | |
420 | return stash; | |
463ee0b2 LW |
421 | } |
422 | ||
a0d0e21e | 423 | HV* |
864dbfa3 | 424 | Perl_gv_stashsv(pTHX_ SV *sv, I32 create) |
a0d0e21e | 425 | { |
dc437b57 | 426 | register char *ptr; |
427 | STRLEN len; | |
428 | ptr = SvPV(sv,len); | |
429 | return gv_stashpvn(ptr, len, create); | |
a0d0e21e LW |
430 | } |
431 | ||
432 | ||
463ee0b2 | 433 | GV * |
864dbfa3 | 434 | Perl_gv_fetchpv(pTHX_ const char *nambeg, I32 add, I32 sv_type) |
79072805 | 435 | { |
11343788 | 436 | dTHR; |
08105a92 | 437 | register const char *name = nambeg; |
463ee0b2 | 438 | register GV *gv = 0; |
79072805 | 439 | GV**gvp; |
79072805 | 440 | I32 len; |
08105a92 | 441 | register const char *namend; |
463ee0b2 | 442 | HV *stash = 0; |
9607fc9c | 443 | U32 add_gvflags = 0; |
79072805 | 444 | |
c07a80fd | 445 | if (*name == '*' && isALPHA(name[1])) /* accidental stringify on a GV? */ |
446 | name++; | |
447 | ||
79072805 | 448 | for (namend = name; *namend; namend++) { |
463ee0b2 LW |
449 | if ((*namend == '\'' && namend[1]) || |
450 | (*namend == ':' && namend[1] == ':')) | |
451 | { | |
463ee0b2 | 452 | if (!stash) |
3280af22 | 453 | stash = PL_defstash; |
dc437b57 | 454 | if (!stash || !SvREFCNT(stash)) /* symbol table under destruction */ |
a0d0e21e | 455 | return Nullgv; |
463ee0b2 | 456 | |
85e6fe83 LW |
457 | len = namend - name; |
458 | if (len > 0) { | |
3c78fafa | 459 | char smallbuf[256]; |
62b57502 | 460 | char *tmpbuf; |
62b57502 | 461 | |
3c78fafa GS |
462 | if (len + 3 < sizeof smallbuf) |
463 | tmpbuf = smallbuf; | |
62b57502 MB |
464 | else |
465 | New(601, tmpbuf, len+3, char); | |
a0d0e21e LW |
466 | Copy(name, tmpbuf, len, char); |
467 | tmpbuf[len++] = ':'; | |
468 | tmpbuf[len++] = ':'; | |
469 | tmpbuf[len] = '\0'; | |
463ee0b2 | 470 | gvp = (GV**)hv_fetch(stash,tmpbuf,len,add); |
6fa846a0 | 471 | gv = gvp ? *gvp : Nullgv; |
3280af22 | 472 | if (gv && gv != (GV*)&PL_sv_undef) { |
6fa846a0 | 473 | if (SvTYPE(gv) != SVt_PVGV) |
0f303493 | 474 | gv_init(gv, stash, tmpbuf, len, (add & GV_ADDMULTI)); |
6fa846a0 GS |
475 | else |
476 | GvMULTI_on(gv); | |
477 | } | |
3c78fafa | 478 | if (tmpbuf != smallbuf) |
62b57502 | 479 | Safefree(tmpbuf); |
3280af22 | 480 | if (!gv || gv == (GV*)&PL_sv_undef) |
a0d0e21e | 481 | return Nullgv; |
85e6fe83 | 482 | |
463ee0b2 LW |
483 | if (!(stash = GvHV(gv))) |
484 | stash = GvHV(gv) = newHV(); | |
85e6fe83 | 485 | |
463ee0b2 | 486 | if (!HvNAME(stash)) |
a0d0e21e | 487 | HvNAME(stash) = savepvn(nambeg, namend - nambeg); |
463ee0b2 LW |
488 | } |
489 | ||
490 | if (*namend == ':') | |
491 | namend++; | |
492 | namend++; | |
493 | name = namend; | |
494 | if (!*name) | |
3280af22 | 495 | return gv ? gv : (GV*)*hv_fetch(PL_defstash, "main::", 6, TRUE); |
79072805 | 496 | } |
79072805 | 497 | } |
a0d0e21e LW |
498 | len = namend - name; |
499 | if (!len) | |
500 | len = 1; | |
463ee0b2 LW |
501 | |
502 | /* No stash in name, so see how we can default */ | |
503 | ||
504 | if (!stash) { | |
b86a2fa7 GS |
505 | if (isIDFIRST(*name) |
506 | || (IN_UTF8 && ((*name & 0xc0) == 0xc0) && isIDFIRST_utf8((U8*)name))) | |
507 | { | |
9607fc9c | 508 | bool global = FALSE; |
509 | ||
463ee0b2 | 510 | if (isUPPER(*name)) { |
9d116dd7 JH |
511 | if (*name == 'S' && ( |
512 | strEQ(name, "SIG") || | |
513 | strEQ(name, "STDIN") || | |
514 | strEQ(name, "STDOUT") || | |
515 | strEQ(name, "STDERR"))) | |
516 | global = TRUE; | |
517 | else if (*name == 'I' && strEQ(name, "INC")) | |
518 | global = TRUE; | |
519 | else if (*name == 'E' && strEQ(name, "ENV")) | |
520 | global = TRUE; | |
463ee0b2 LW |
521 | else if (*name == 'A' && ( |
522 | strEQ(name, "ARGV") || | |
9d116dd7 | 523 | strEQ(name, "ARGVOUT"))) |
463ee0b2 LW |
524 | global = TRUE; |
525 | } | |
526 | else if (*name == '_' && !name[1]) | |
527 | global = TRUE; | |
9607fc9c | 528 | |
463ee0b2 | 529 | if (global) |
3280af22 NIS |
530 | stash = PL_defstash; |
531 | else if ((COP*)PL_curcop == &PL_compiling) { | |
532 | stash = PL_curstash; | |
533 | if (add && (PL_hints & HINT_STRICT_VARS) && | |
77ca0c92 | 534 | !(add & GV_ADDOUR) && |
748a9306 LW |
535 | sv_type != SVt_PVCV && |
536 | sv_type != SVt_PVGV && | |
4633a7c4 | 537 | sv_type != SVt_PVFM && |
c07a80fd | 538 | sv_type != SVt_PVIO && |
377b8fbc | 539 | !(len == 1 && sv_type == SVt_PV && strchr("ab",*name)) ) |
748a9306 | 540 | { |
4633a7c4 LW |
541 | gvp = (GV**)hv_fetch(stash,name,len,0); |
542 | if (!gvp || | |
3280af22 | 543 | *gvp == (GV*)&PL_sv_undef || |
a5f75d66 AD |
544 | SvTYPE(*gvp) != SVt_PVGV) |
545 | { | |
4633a7c4 | 546 | stash = 0; |
a5f75d66 AD |
547 | } |
548 | else if (sv_type == SVt_PV && !GvIMPORTED_SV(*gvp) || | |
549 | sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp) || | |
550 | sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp) ) | |
4633a7c4 | 551 | { |
cea2e8a9 | 552 | Perl_warn(aTHX_ "Variable \"%c%s\" is not imported", |
4633a7c4 LW |
553 | sv_type == SVt_PVAV ? '@' : |
554 | sv_type == SVt_PVHV ? '%' : '$', | |
555 | name); | |
8ebc5c01 | 556 | if (GvCVu(*gvp)) |
cea2e8a9 | 557 | Perl_warn(aTHX_ "(Did you mean &%s instead?)\n", name); |
a0d0e21e | 558 | stash = 0; |
4633a7c4 | 559 | } |
a0d0e21e | 560 | } |
85e6fe83 | 561 | } |
463ee0b2 | 562 | else |
3280af22 | 563 | stash = PL_curcop->cop_stash; |
463ee0b2 LW |
564 | } |
565 | else | |
3280af22 | 566 | stash = PL_defstash; |
463ee0b2 LW |
567 | } |
568 | ||
569 | /* By this point we should have a stash and a name */ | |
570 | ||
a0d0e21e | 571 | if (!stash) { |
5a844595 GS |
572 | if (add) { |
573 | qerror(Perl_mess(aTHX_ | |
574 | "Global symbol \"%s%s\" requires explicit package name", | |
575 | (sv_type == SVt_PV ? "$" | |
576 | : sv_type == SVt_PVAV ? "@" | |
577 | : sv_type == SVt_PVHV ? "%" | |
578 | : ""), name)); | |
a0d0e21e | 579 | } |
5a844595 | 580 | return Nullgv; |
a0d0e21e LW |
581 | } |
582 | ||
583 | if (!SvREFCNT(stash)) /* symbol table under destruction */ | |
584 | return Nullgv; | |
585 | ||
79072805 | 586 | gvp = (GV**)hv_fetch(stash,name,len,add); |
3280af22 | 587 | if (!gvp || *gvp == (GV*)&PL_sv_undef) |
79072805 LW |
588 | return Nullgv; |
589 | gv = *gvp; | |
590 | if (SvTYPE(gv) == SVt_PVGV) { | |
a0d0e21e | 591 | if (add) { |
a5f75d66 | 592 | GvMULTI_on(gv); |
a0d0e21e LW |
593 | gv_init_sv(gv, sv_type); |
594 | } | |
79072805 | 595 | return gv; |
55d729e4 GS |
596 | } else if (add & GV_NOINIT) { |
597 | return gv; | |
79072805 | 598 | } |
93a17b20 LW |
599 | |
600 | /* Adding a new symbol */ | |
601 | ||
0453d815 PM |
602 | if (add & GV_ADDWARN && ckWARN_d(WARN_INTERNAL)) |
603 | Perl_warner(aTHX_ WARN_INTERNAL, "Had to create %s unexpectedly", nambeg); | |
55d729e4 | 604 | gv_init(gv, stash, name, len, add & GV_ADDMULTI); |
a0d0e21e | 605 | gv_init_sv(gv, sv_type); |
9607fc9c | 606 | GvFLAGS(gv) |= add_gvflags; |
93a17b20 | 607 | |
0453d815 PM |
608 | if (isLEXWARN_on && isALPHA(name[0]) && ! ckWARN(WARN_ONCE)) |
609 | GvMULTI_on(gv) ; | |
610 | ||
93a17b20 LW |
611 | /* set up magic where warranted */ |
612 | switch (*name) { | |
a0d0e21e LW |
613 | case 'A': |
614 | if (strEQ(name, "ARGV")) { | |
615 | IoFLAGS(GvIOn(gv)) |= IOf_ARGV|IOf_START; | |
616 | } | |
617 | break; | |
a0d0e21e LW |
618 | case 'E': |
619 | if (strnEQ(name, "EXPORT", 6)) | |
a5f75d66 | 620 | GvMULTI_on(gv); |
a0d0e21e | 621 | break; |
463ee0b2 LW |
622 | case 'I': |
623 | if (strEQ(name, "ISA")) { | |
624 | AV* av = GvAVn(gv); | |
a5f75d66 | 625 | GvMULTI_on(gv); |
a0d0e21e | 626 | sv_magic((SV*)av, (SV*)gv, 'I', Nullch, 0); |
93965878 | 627 | /* NOTE: No support for tied ISA */ |
55d729e4 GS |
628 | if ((add & GV_ADDMULTI) && strEQ(nambeg,"AnyDBM_File::ISA") |
629 | && AvFILLp(av) == -1) | |
85e6fe83 | 630 | { |
a0d0e21e | 631 | char *pname; |
79cb57f6 | 632 | av_push(av, newSVpvn(pname = "NDBM_File",9)); |
dc437b57 | 633 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 634 | av_push(av, newSVpvn(pname = "DB_File",7)); |
dc437b57 | 635 | gv_stashpvn(pname, 7, TRUE); |
79cb57f6 | 636 | av_push(av, newSVpvn(pname = "GDBM_File",9)); |
dc437b57 | 637 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 638 | av_push(av, newSVpvn(pname = "SDBM_File",9)); |
dc437b57 | 639 | gv_stashpvn(pname, 9, TRUE); |
79cb57f6 | 640 | av_push(av, newSVpvn(pname = "ODBM_File",9)); |
dc437b57 | 641 | gv_stashpvn(pname, 9, TRUE); |
85e6fe83 | 642 | } |
463ee0b2 LW |
643 | } |
644 | break; | |
a0d0e21e LW |
645 | case 'O': |
646 | if (strEQ(name, "OVERLOAD")) { | |
647 | HV* hv = GvHVn(gv); | |
a5f75d66 | 648 | GvMULTI_on(gv); |
ea0efc06 | 649 | hv_magic(hv, gv, 'A'); |
a0d0e21e LW |
650 | } |
651 | break; | |
93a17b20 LW |
652 | case 'S': |
653 | if (strEQ(name, "SIG")) { | |
654 | HV *hv; | |
dc437b57 | 655 | I32 i; |
f4c556ac GS |
656 | GvMULTI_on(gv); |
657 | hv = GvHVn(gv); | |
658 | hv_magic(hv, gv, 'S'); | |
659 | for(i = 1; PL_sig_name[i]; i++) { | |
dc437b57 | 660 | SV ** init; |
f4c556ac GS |
661 | init = hv_fetch(hv, PL_sig_name[i], strlen(PL_sig_name[i]), 1); |
662 | if (init) | |
663 | sv_setsv(*init, &PL_sv_undef); | |
22c35a8c GS |
664 | PL_psig_ptr[i] = 0; |
665 | PL_psig_name[i] = 0; | |
dc437b57 | 666 | } |
93a17b20 LW |
667 | } |
668 | break; | |
09bef843 SB |
669 | case 'V': |
670 | if (strEQ(name, "VERSION")) | |
671 | GvMULTI_on(gv); | |
672 | break; | |
93a17b20 LW |
673 | |
674 | case '&': | |
463ee0b2 LW |
675 | if (len > 1) |
676 | break; | |
3280af22 | 677 | PL_sawampersand = TRUE; |
a0d0e21e | 678 | goto ro_magicalize; |
93a17b20 LW |
679 | |
680 | case '`': | |
463ee0b2 LW |
681 | if (len > 1) |
682 | break; | |
3280af22 | 683 | PL_sawampersand = TRUE; |
a0d0e21e | 684 | goto ro_magicalize; |
93a17b20 LW |
685 | |
686 | case '\'': | |
463ee0b2 LW |
687 | if (len > 1) |
688 | break; | |
3280af22 | 689 | PL_sawampersand = TRUE; |
a0d0e21e | 690 | goto ro_magicalize; |
93a17b20 LW |
691 | |
692 | case ':': | |
463ee0b2 LW |
693 | if (len > 1) |
694 | break; | |
3280af22 | 695 | sv_setpv(GvSV(gv),PL_chopset); |
93a17b20 LW |
696 | goto magicalize; |
697 | ||
ff0cee69 | 698 | case '?': |
699 | if (len > 1) | |
700 | break; | |
701 | #ifdef COMPLEX_STATUS | |
07f14f54 | 702 | (void)SvUPGRADE(GvSV(gv), SVt_PVLV); |
ff0cee69 | 703 | #endif |
704 | goto magicalize; | |
705 | ||
067391ea | 706 | case '!': |
4318d5a0 | 707 | if (len > 1) |
067391ea | 708 | break; |
3280af22 | 709 | if (sv_type > SVt_PV && PL_curcop != &PL_compiling) { |
067391ea | 710 | HV* stash = gv_stashpvn("Errno",5,FALSE); |
265f5c4a | 711 | if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) { |
067391ea GS |
712 | dSP; |
713 | PUTBACK; | |
cea2e8a9 | 714 | require_pv("Errno.pm"); |
067391ea GS |
715 | SPAGAIN; |
716 | stash = gv_stashpvn("Errno",5,FALSE); | |
717 | if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) | |
cea2e8a9 | 718 | Perl_croak(aTHX_ "Can't use %%! because Errno.pm is not available"); |
067391ea GS |
719 | } |
720 | } | |
721 | goto magicalize; | |
6cef1e77 IZ |
722 | case '-': |
723 | if (len > 1) | |
724 | break; | |
725 | else { | |
726 | AV* av = GvAVn(gv); | |
727 | sv_magic((SV*)av, Nullsv, 'D', Nullch, 0); | |
728 | } | |
729 | goto magicalize; | |
93a17b20 | 730 | case '#': |
a0d0e21e | 731 | case '*': |
599cee73 | 732 | if (ckWARN(WARN_DEPRECATED) && len == 1 && sv_type == SVt_PV) |
cea2e8a9 | 733 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of $%s is deprecated", name); |
a0d0e21e LW |
734 | /* FALL THROUGH */ |
735 | case '[': | |
93a17b20 LW |
736 | case '^': |
737 | case '~': | |
738 | case '=': | |
93a17b20 LW |
739 | case '%': |
740 | case '.': | |
93a17b20 LW |
741 | case '(': |
742 | case ')': | |
743 | case '<': | |
744 | case '>': | |
745 | case ',': | |
746 | case '\\': | |
747 | case '/': | |
93a17b20 | 748 | case '|': |
748a9306 | 749 | case '\001': |
49460fe6 | 750 | case '\003': |
93a17b20 | 751 | case '\004': |
ad8898e0 | 752 | case '\005': |
748a9306 | 753 | case '\006': |
a0d0e21e | 754 | case '\010': |
9d116dd7 | 755 | case '\011': /* NOT \t in EBCDIC */ |
ad8898e0 | 756 | case '\017': |
93a17b20 LW |
757 | case '\020': |
758 | case '\024': | |
463ee0b2 LW |
759 | if (len > 1) |
760 | break; | |
761 | goto magicalize; | |
6cef1e77 IZ |
762 | case '\023': |
763 | if (len > 1) | |
764 | break; | |
765 | goto ro_magicalize; | |
4438c4b7 JH |
766 | case '\027': /* $^W & $^Warnings */ |
767 | if (len > 1 && strNE(name, "\027arnings")) | |
768 | break; | |
769 | goto magicalize; | |
463ee0b2 | 770 | |
a0d0e21e | 771 | case '+': |
6cef1e77 IZ |
772 | if (len > 1) |
773 | break; | |
774 | else { | |
775 | AV* av = GvAVn(gv); | |
776 | sv_magic((SV*)av, (SV*)av, 'D', Nullch, 0); | |
777 | } | |
778 | /* FALL THROUGH */ | |
463ee0b2 LW |
779 | case '1': |
780 | case '2': | |
781 | case '3': | |
782 | case '4': | |
783 | case '5': | |
784 | case '6': | |
785 | case '7': | |
786 | case '8': | |
787 | case '9': | |
a0d0e21e LW |
788 | ro_magicalize: |
789 | SvREADONLY_on(GvSV(gv)); | |
93a17b20 | 790 | magicalize: |
463ee0b2 | 791 | sv_magic(GvSV(gv), (SV*)gv, 0, name, len); |
93a17b20 LW |
792 | break; |
793 | ||
794 | case '\014': | |
463ee0b2 LW |
795 | if (len > 1) |
796 | break; | |
93a17b20 | 797 | sv_setpv(GvSV(gv),"\f"); |
3280af22 | 798 | PL_formfeed = GvSV(gv); |
93a17b20 LW |
799 | break; |
800 | case ';': | |
463ee0b2 LW |
801 | if (len > 1) |
802 | break; | |
93a17b20 LW |
803 | sv_setpv(GvSV(gv),"\034"); |
804 | break; | |
463ee0b2 LW |
805 | case ']': |
806 | if (len == 1) { | |
f86702cc | 807 | SV *sv = GvSV(gv); |
07f14f54 | 808 | (void)SvUPGRADE(sv, SVt_PVNV); |
3280af22 | 809 | sv_setpv(sv, PL_patchlevel); |
f86702cc | 810 | (void)sv_2nv(sv); |
811 | SvREADONLY_on(sv); | |
93a17b20 LW |
812 | } |
813 | break; | |
79072805 | 814 | } |
93a17b20 | 815 | return gv; |
79072805 LW |
816 | } |
817 | ||
818 | void | |
864dbfa3 | 819 | Perl_gv_fullname3(pTHX_ SV *sv, GV *gv, const char *prefix) |
79072805 LW |
820 | { |
821 | HV *hv = GvSTASH(gv); | |
f967eb5f | 822 | if (!hv) { |
823 | SvOK_off(sv); | |
79072805 | 824 | return; |
f967eb5f | 825 | } |
826 | sv_setpv(sv, prefix ? prefix : ""); | |
79072805 | 827 | sv_catpv(sv,HvNAME(hv)); |
463ee0b2 | 828 | sv_catpvn(sv,"::", 2); |
79072805 LW |
829 | sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv)); |
830 | } | |
831 | ||
832 | void | |
864dbfa3 | 833 | Perl_gv_efullname3(pTHX_ SV *sv, GV *gv, const char *prefix) |
79072805 | 834 | { |
f967eb5f | 835 | GV *egv = GvEGV(gv); |
748a9306 LW |
836 | if (!egv) |
837 | egv = gv; | |
f6aff53a | 838 | gv_fullname3(sv, egv, prefix); |
839 | } | |
840 | ||
841 | /* XXX compatibility with versions <= 5.003. */ | |
842 | void | |
864dbfa3 | 843 | Perl_gv_fullname(pTHX_ SV *sv, GV *gv) |
f6aff53a | 844 | { |
845 | gv_fullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
846 | } | |
847 | ||
848 | /* XXX compatibility with versions <= 5.003. */ | |
849 | void | |
864dbfa3 | 850 | Perl_gv_efullname(pTHX_ SV *sv, GV *gv) |
f6aff53a | 851 | { |
852 | gv_efullname3(sv, gv, sv == (SV*)gv ? "*" : ""); | |
79072805 LW |
853 | } |
854 | ||
855 | IO * | |
864dbfa3 | 856 | Perl_newIO(pTHX) |
79072805 | 857 | { |
11343788 | 858 | dTHR; |
79072805 | 859 | IO *io; |
8990e307 LW |
860 | GV *iogv; |
861 | ||
862 | io = (IO*)NEWSV(0,0); | |
a0d0e21e | 863 | sv_upgrade((SV *)io,SVt_PVIO); |
8990e307 LW |
864 | SvREFCNT(io) = 1; |
865 | SvOBJECT_on(io); | |
c9de509e | 866 | iogv = gv_fetchpv("FileHandle::", FALSE, SVt_PVHV); |
5f2d631d GS |
867 | /* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */ |
868 | if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv)))) | |
c9de509e | 869 | iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV); |
8990e307 | 870 | SvSTASH(io) = (HV*)SvREFCNT_inc(GvHV(iogv)); |
79072805 LW |
871 | return io; |
872 | } | |
873 | ||
874 | void | |
864dbfa3 | 875 | Perl_gv_check(pTHX_ HV *stash) |
79072805 | 876 | { |
11343788 | 877 | dTHR; |
79072805 LW |
878 | register HE *entry; |
879 | register I32 i; | |
880 | register GV *gv; | |
463ee0b2 | 881 | HV *hv; |
a0d0e21e | 882 | GV *filegv; |
463ee0b2 | 883 | |
8990e307 LW |
884 | if (!HvARRAY(stash)) |
885 | return; | |
a0d0e21e | 886 | for (i = 0; i <= (I32) HvMAX(stash); i++) { |
dc437b57 | 887 | for (entry = HvARRAY(stash)[i]; entry; entry = HeNEXT(entry)) { |
888 | if (HeKEY(entry)[HeKLEN(entry)-1] == ':' && | |
889 | (gv = (GV*)HeVAL(entry)) && (hv = GvHV(gv)) && HvNAME(hv)) | |
a0d0e21e | 890 | { |
19b6c847 | 891 | if (hv != PL_defstash && hv != stash) |
a0d0e21e LW |
892 | gv_check(hv); /* nested package */ |
893 | } | |
dc437b57 | 894 | else if (isALPHA(*HeKEY(entry))) { |
895 | gv = (GV*)HeVAL(entry); | |
55d729e4 | 896 | if (SvTYPE(gv) != SVt_PVGV || GvMULTI(gv)) |
463ee0b2 | 897 | continue; |
cc49e20b | 898 | CopLINE_set(PL_curcop, GvLINE(gv)); |
b195d487 | 899 | filegv = GvFILEGV(gv); /* XXX could be made faster */ |
cc49e20b | 900 | CopFILEGV_set(PL_curcop, filegv); |
a5f75d66 | 901 | if (filegv && GvMULTI(filegv)) /* Filename began with slash */ |
8990e307 | 902 | continue; |
cea2e8a9 | 903 | Perl_warner(aTHX_ WARN_ONCE, |
599cee73 | 904 | "Name \"%s::%s\" used only once: possible typo", |
a0d0e21e | 905 | HvNAME(stash), GvNAME(gv)); |
463ee0b2 | 906 | } |
79072805 LW |
907 | } |
908 | } | |
909 | } | |
910 | ||
911 | GV * | |
864dbfa3 | 912 | Perl_newGVgen(pTHX_ char *pack) |
79072805 | 913 | { |
cea2e8a9 | 914 | return gv_fetchpv(Perl_form(aTHX_ "%s::_GEN_%ld", pack, (long)PL_gensym++), |
46fc3d4c | 915 | TRUE, SVt_PVGV); |
79072805 LW |
916 | } |
917 | ||
918 | /* hopefully this is only called on local symbol table entries */ | |
919 | ||
920 | GP* | |
864dbfa3 | 921 | Perl_gp_ref(pTHX_ GP *gp) |
79072805 LW |
922 | { |
923 | gp->gp_refcnt++; | |
44a8e56a | 924 | if (gp->gp_cv) { |
925 | if (gp->gp_cvgen) { | |
926 | /* multi-named GPs cannot be used for method cache */ | |
927 | SvREFCNT_dec(gp->gp_cv); | |
928 | gp->gp_cv = Nullcv; | |
929 | gp->gp_cvgen = 0; | |
930 | } | |
931 | else { | |
932 | /* Adding a new name to a subroutine invalidates method cache */ | |
3280af22 | 933 | PL_sub_generation++; |
44a8e56a | 934 | } |
935 | } | |
79072805 | 936 | return gp; |
79072805 LW |
937 | } |
938 | ||
939 | void | |
864dbfa3 | 940 | Perl_gp_free(pTHX_ GV *gv) |
79072805 | 941 | { |
f248d071 | 942 | dTHR; |
79072805 | 943 | GP* gp; |
377b8fbc | 944 | CV* cv; |
79072805 LW |
945 | |
946 | if (!gv || !(gp = GvGP(gv))) | |
947 | return; | |
f248d071 GS |
948 | if (gp->gp_refcnt == 0) { |
949 | if (ckWARN_d(WARN_INTERNAL)) | |
950 | Perl_warner(aTHX_ WARN_INTERNAL, | |
951 | "Attempt to free unreferenced glob pointers"); | |
79072805 LW |
952 | return; |
953 | } | |
44a8e56a | 954 | if (gp->gp_cv) { |
955 | /* Deleting the name of a subroutine invalidates method cache */ | |
3280af22 | 956 | PL_sub_generation++; |
44a8e56a | 957 | } |
748a9306 LW |
958 | if (--gp->gp_refcnt > 0) { |
959 | if (gp->gp_egv == gv) | |
960 | gp->gp_egv = 0; | |
79072805 | 961 | return; |
748a9306 | 962 | } |
79072805 | 963 | |
8990e307 LW |
964 | SvREFCNT_dec(gp->gp_sv); |
965 | SvREFCNT_dec(gp->gp_av); | |
966 | SvREFCNT_dec(gp->gp_hv); | |
377b8fbc | 967 | SvREFCNT_dec(gp->gp_io); |
a6006777 | 968 | SvREFCNT_dec(gp->gp_cv); |
748a9306 LW |
969 | SvREFCNT_dec(gp->gp_form); |
970 | ||
79072805 LW |
971 | Safefree(gp); |
972 | GvGP(gv) = 0; | |
973 | } | |
974 | ||
975 | #if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286)) | |
976 | #define MICROPORT | |
977 | #endif | |
978 | ||
979 | #ifdef MICROPORT /* Microport 2.4 hack */ | |
980 | AV *GvAVn(gv) | |
981 | register GV *gv; | |
982 | { | |
983 | if (GvGP(gv)->gp_av) | |
984 | return GvGP(gv)->gp_av; | |
985 | else | |
986 | return GvGP(gv_AVadd(gv))->gp_av; | |
987 | } | |
988 | ||
989 | HV *GvHVn(gv) | |
990 | register GV *gv; | |
991 | { | |
992 | if (GvGP(gv)->gp_hv) | |
993 | return GvGP(gv)->gp_hv; | |
994 | else | |
995 | return GvGP(gv_HVadd(gv))->gp_hv; | |
996 | } | |
997 | #endif /* Microport 2.4 hack */ | |
a0d0e21e | 998 | |
a0d0e21e LW |
999 | /* Updates and caches the CV's */ |
1000 | ||
1001 | bool | |
864dbfa3 | 1002 | Perl_Gv_AMupdate(pTHX_ HV *stash) |
a0d0e21e | 1003 | { |
11343788 | 1004 | dTHR; |
a0d0e21e LW |
1005 | GV** gvp; |
1006 | HV* hv; | |
1007 | GV* gv; | |
1008 | CV* cv; | |
1009 | MAGIC* mg=mg_find((SV*)stash,'c'); | |
8ac85365 | 1010 | AMT *amtp = (mg) ? (AMT*)mg->mg_ptr: (AMT *) NULL; |
a6006777 | 1011 | AMT amt; |
2d8e6c8d | 1012 | STRLEN n_a; |
a0d0e21e | 1013 | |
3280af22 NIS |
1014 | if (mg && amtp->was_ok_am == PL_amagic_generation |
1015 | && amtp->was_ok_sub == PL_sub_generation) | |
a6006777 | 1016 | return AMT_AMAGIC(amtp); |
1017 | if (amtp && AMT_AMAGIC(amtp)) { /* Have table. */ | |
748a9306 | 1018 | int i; |
a6006777 | 1019 | for (i=1; i<NofAMmeth; i++) { |
748a9306 LW |
1020 | if (amtp->table[i]) { |
1021 | SvREFCNT_dec(amtp->table[i]); | |
1022 | } | |
1023 | } | |
1024 | } | |
a0d0e21e LW |
1025 | sv_unmagic((SV*)stash, 'c'); |
1026 | ||
cea2e8a9 | 1027 | DEBUG_o( Perl_deb(aTHX_ "Recalcing overload magic in package %s\n",HvNAME(stash)) ); |
a0d0e21e | 1028 | |
3280af22 NIS |
1029 | amt.was_ok_am = PL_amagic_generation; |
1030 | amt.was_ok_sub = PL_sub_generation; | |
a6006777 | 1031 | amt.fallback = AMGfallNO; |
1032 | amt.flags = 0; | |
1033 | ||
1034 | #ifdef OVERLOAD_VIA_HASH | |
1035 | gvp=(GV**)hv_fetch(stash,"OVERLOAD",8,FALSE); /* A shortcut */ | |
3280af22 | 1036 | if (gvp && ((gv = *gvp) != (GV*)&PL_sv_undef && (hv = GvHV(gv)))) { |
a0d0e21e LW |
1037 | int filled=0; |
1038 | int i; | |
1039 | char *cp; | |
a0d0e21e LW |
1040 | SV* sv; |
1041 | SV** svp; | |
a0d0e21e | 1042 | |
22c35a8c | 1043 | /* Work with "fallback" key, which we assume to be first in PL_AMG_names */ |
a0d0e21e | 1044 | |
22c35a8c | 1045 | if (( cp = (char *)PL_AMG_names[0] ) && |
a6006777 | 1046 | (svp = (SV**)hv_fetch(hv,cp,strlen(cp),FALSE)) && (sv = *svp)) { |
a0d0e21e LW |
1047 | if (SvTRUE(sv)) amt.fallback=AMGfallYES; |
1048 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; | |
1049 | } | |
a6006777 | 1050 | for (i = 1; i < NofAMmeth; i++) { |
1051 | cv = 0; | |
22c35a8c | 1052 | cp = (char *)PL_AMG_names[i]; |
a6006777 | 1053 | |
1054 | svp = (SV**)hv_fetch(hv, cp, strlen(cp), FALSE); | |
3280af22 | 1055 | if (svp && ((sv = *svp) != &PL_sv_undef)) { |
a0d0e21e LW |
1056 | switch (SvTYPE(sv)) { |
1057 | default: | |
1058 | if (!SvROK(sv)) { | |
1059 | if (!SvOK(sv)) break; | |
2d8e6c8d | 1060 | gv = gv_fetchmethod(stash, SvPV(sv, n_a)); |
a0d0e21e LW |
1061 | if (gv) cv = GvCV(gv); |
1062 | break; | |
1063 | } | |
1064 | cv = (CV*)SvRV(sv); | |
1065 | if (SvTYPE(cv) == SVt_PVCV) | |
1066 | break; | |
1067 | /* FALL THROUGH */ | |
1068 | case SVt_PVHV: | |
1069 | case SVt_PVAV: | |
cea2e8a9 | 1070 | Perl_croak(aTHX_ "Not a subroutine reference in overload table"); |
a0d0e21e LW |
1071 | return FALSE; |
1072 | case SVt_PVCV: | |
8ebc5c01 | 1073 | cv = (CV*)sv; |
1074 | break; | |
a0d0e21e | 1075 | case SVt_PVGV: |
8ebc5c01 | 1076 | if (!(cv = GvCVu((GV*)sv))) |
f6ec51f7 | 1077 | cv = sv_2cv(sv, &stash, &gv, FALSE); |
8ebc5c01 | 1078 | break; |
a0d0e21e LW |
1079 | } |
1080 | if (cv) filled=1; | |
1081 | else { | |
cea2e8a9 | 1082 | Perl_croak(aTHX_ "Method for operation %s not found in package %.256s during blessing\n", |
a0d0e21e LW |
1083 | cp,HvNAME(stash)); |
1084 | return FALSE; | |
1085 | } | |
1086 | } | |
a6006777 | 1087 | #else |
1088 | { | |
1089 | int filled = 0; | |
1090 | int i; | |
9607fc9c | 1091 | const char *cp; |
a6006777 | 1092 | SV* sv = NULL; |
1093 | SV** svp; | |
1094 | ||
22c35a8c | 1095 | /* Work with "fallback" key, which we assume to be first in PL_AMG_names */ |
a6006777 | 1096 | |
22c35a8c | 1097 | if ( cp = PL_AMG_names[0] ) { |
a6006777 | 1098 | /* Try to find via inheritance. */ |
774d564b | 1099 | gv = gv_fetchmeth(stash, "()", 2, -1); /* A cookie: "()". */ |
a6006777 | 1100 | if (gv) sv = GvSV(gv); |
1101 | ||
774d564b | 1102 | if (!gv) goto no_table; |
a6006777 | 1103 | else if (SvTRUE(sv)) amt.fallback=AMGfallYES; |
1104 | else if (SvOK(sv)) amt.fallback=AMGfallNEVER; | |
1105 | } | |
1106 | ||
1107 | for (i = 1; i < NofAMmeth; i++) { | |
cea2e8a9 GS |
1108 | SV *cookie = sv_2mortal(Perl_newSVpvf(aTHX_ "(%s", cp = PL_AMG_names[i])); |
1109 | DEBUG_o( Perl_deb(aTHX_ "Checking overloading of `%s' in package `%.256s'\n", | |
44a8e56a | 1110 | cp, HvNAME(stash)) ); |
46fc3d4c | 1111 | /* don't fill the cache while looking up! */ |
1112 | gv = gv_fetchmeth(stash, SvPVX(cookie), SvCUR(cookie), -1); | |
1113 | cv = 0; | |
44a8e56a | 1114 | if(gv && (cv = GvCV(gv))) { |
44a8e56a | 1115 | if (GvNAMELEN(CvGV(cv)) == 3 && strEQ(GvNAME(CvGV(cv)), "nil") |
1116 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "overload")) { | |
1117 | /* GvSV contains the name of the method. */ | |
1118 | GV *ngv; | |
1119 | ||
cea2e8a9 | 1120 | DEBUG_o( Perl_deb(aTHX_ "Resolving method `%.256s' for overloaded `%s' in package `%.256s'\n", |
2d8e6c8d | 1121 | SvPV(GvSV(gv), n_a), cp, HvNAME(stash)) ); |
dc848c6f | 1122 | if (!SvPOK(GvSV(gv)) |
1123 | || !(ngv = gv_fetchmethod_autoload(stash, SvPVX(GvSV(gv)), | |
1124 | FALSE))) | |
1125 | { | |
44a8e56a | 1126 | /* Can be an import stub (created by `can'). */ |
1127 | if (GvCVGEN(gv)) { | |
cea2e8a9 | 1128 | Perl_croak(aTHX_ "Stub found while resolving method `%.256s' overloading `%s' in package `%.256s'", |
44a8e56a | 1129 | (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), |
1130 | cp, HvNAME(stash)); | |
1131 | } else | |
cea2e8a9 | 1132 | Perl_croak(aTHX_ "Can't resolve method `%.256s' overloading `%s' in package `%.256s'", |
44a8e56a | 1133 | (SvPOK(GvSV(gv)) ? SvPVX(GvSV(gv)) : "???" ), |
1134 | cp, HvNAME(stash)); | |
1135 | } | |
dc848c6f | 1136 | cv = GvCV(gv = ngv); |
44a8e56a | 1137 | } |
cea2e8a9 | 1138 | DEBUG_o( Perl_deb(aTHX_ "Overloading `%s' in package `%.256s' via `%.256s::%.256s' \n", |
44a8e56a | 1139 | cp, HvNAME(stash), HvNAME(GvSTASH(CvGV(cv))), |
1140 | GvNAME(CvGV(cv))) ); | |
1141 | filled = 1; | |
1142 | } | |
a6006777 | 1143 | #endif |
1144 | amt.table[i]=(CV*)SvREFCNT_inc(cv); | |
a0d0e21e | 1145 | } |
a0d0e21e | 1146 | if (filled) { |
a6006777 | 1147 | AMT_AMAGIC_on(&amt); |
1148 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMT)); | |
a0d0e21e LW |
1149 | return TRUE; |
1150 | } | |
1151 | } | |
a6006777 | 1152 | /* Here we have no table: */ |
774d564b | 1153 | no_table: |
a6006777 | 1154 | AMT_AMAGIC_off(&amt); |
1155 | sv_magic((SV*)stash, 0, 'c', (char*)&amt, sizeof(AMTS)); | |
a0d0e21e LW |
1156 | return FALSE; |
1157 | } | |
1158 | ||
a0d0e21e | 1159 | SV* |
864dbfa3 | 1160 | Perl_amagic_call(pTHX_ SV *left, SV *right, int method, int flags) |
a0d0e21e | 1161 | { |
11343788 | 1162 | dTHR; |
a0d0e21e LW |
1163 | MAGIC *mg; |
1164 | CV *cv; | |
1165 | CV **cvp=NULL, **ocvp=NULL; | |
1166 | AMT *amtp, *oamtp; | |
1167 | int fl=0, off, off1, lr=0, assign=AMGf_assign & flags, notfound=0; | |
ee239bfe | 1168 | int postpr = 0, force_cpy = 0, assignshift = assign ? 1 : 0; |
a0d0e21e LW |
1169 | HV* stash; |
1170 | if (!(AMGf_noleft & flags) && SvAMAGIC(left) | |
1171 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(left))),'c')) | |
a6006777 | 1172 | && (ocvp = cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1173 | ? (oamtp = amtp = (AMT*)mg->mg_ptr)->table | |
8ac85365 | 1174 | : (CV **) NULL)) |
748a9306 LW |
1175 | && ((cv = cvp[off=method+assignshift]) |
1176 | || (assign && amtp->fallback > AMGfallNEVER && /* fallback to | |
1177 | * usual method */ | |
1178 | (fl = 1, cv = cvp[off=method])))) { | |
a0d0e21e LW |
1179 | lr = -1; /* Call method for left argument */ |
1180 | } else { | |
1181 | if (cvp && amtp->fallback > AMGfallNEVER && flags & AMGf_unary) { | |
1182 | int logic; | |
1183 | ||
1184 | /* look for substituted methods */ | |
ee239bfe | 1185 | /* In all the covered cases we should be called with assign==0. */ |
a0d0e21e LW |
1186 | switch (method) { |
1187 | case inc_amg: | |
ee239bfe IZ |
1188 | force_cpy = 1; |
1189 | if ((cv = cvp[off=add_ass_amg]) | |
1190 | || ((cv = cvp[off = add_amg]) && (force_cpy = 0, postpr = 1))) { | |
3280af22 | 1191 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1192 | } |
1193 | break; | |
1194 | case dec_amg: | |
ee239bfe IZ |
1195 | force_cpy = 1; |
1196 | if ((cv = cvp[off = subtr_ass_amg]) | |
1197 | || ((cv = cvp[off = subtr_amg]) && (force_cpy = 0, postpr=1))) { | |
3280af22 | 1198 | right = &PL_sv_yes; lr = -1; assign = 1; |
a0d0e21e LW |
1199 | } |
1200 | break; | |
1201 | case bool__amg: | |
1202 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=string_amg])); | |
1203 | break; | |
1204 | case numer_amg: | |
1205 | (void)((cv = cvp[off=string_amg]) || (cv = cvp[off=bool__amg])); | |
1206 | break; | |
1207 | case string_amg: | |
1208 | (void)((cv = cvp[off=numer_amg]) || (cv = cvp[off=bool__amg])); | |
1209 | break; | |
dc437b57 | 1210 | case not_amg: |
1211 | (void)((cv = cvp[off=bool__amg]) | |
1212 | || (cv = cvp[off=numer_amg]) | |
1213 | || (cv = cvp[off=string_amg])); | |
1214 | postpr = 1; | |
1215 | break; | |
748a9306 LW |
1216 | case copy_amg: |
1217 | { | |
76e3520e GS |
1218 | /* |
1219 | * SV* ref causes confusion with the interpreter variable of | |
1220 | * the same name | |
1221 | */ | |
1222 | SV* tmpRef=SvRV(left); | |
1223 | if (!SvROK(tmpRef) && SvTYPE(tmpRef) <= SVt_PVMG) { | |
fc36a67e | 1224 | /* |
1225 | * Just to be extra cautious. Maybe in some | |
1226 | * additional cases sv_setsv is safe, too. | |
1227 | */ | |
76e3520e | 1228 | SV* newref = newSVsv(tmpRef); |
748a9306 | 1229 | SvOBJECT_on(newref); |
76e3520e | 1230 | SvSTASH(newref) = (HV*)SvREFCNT_inc(SvSTASH(tmpRef)); |
748a9306 LW |
1231 | return newref; |
1232 | } | |
1233 | } | |
1234 | break; | |
a0d0e21e | 1235 | case abs_amg: |
748a9306 | 1236 | if ((cvp[off1=lt_amg] || cvp[off1=ncmp_amg]) |
a0d0e21e | 1237 | && ((cv = cvp[off=neg_amg]) || (cv = cvp[off=subtr_amg]))) { |
748a9306 | 1238 | SV* nullsv=sv_2mortal(newSViv(0)); |
a0d0e21e | 1239 | if (off1==lt_amg) { |
748a9306 | 1240 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1241 | lt_amg,AMGf_noright); |
1242 | logic = SvTRUE(lessp); | |
1243 | } else { | |
748a9306 | 1244 | SV* lessp = amagic_call(left,nullsv, |
a0d0e21e LW |
1245 | ncmp_amg,AMGf_noright); |
1246 | logic = (SvNV(lessp) < 0); | |
1247 | } | |
1248 | if (logic) { | |
1249 | if (off==subtr_amg) { | |
1250 | right = left; | |
748a9306 | 1251 | left = nullsv; |
a0d0e21e LW |
1252 | lr = 1; |
1253 | } | |
1254 | } else { | |
1255 | return left; | |
1256 | } | |
1257 | } | |
1258 | break; | |
1259 | case neg_amg: | |
1260 | if (cv = cvp[off=subtr_amg]) { | |
1261 | right = left; | |
1262 | left = sv_2mortal(newSViv(0)); | |
1263 | lr = 1; | |
1264 | } | |
1265 | break; | |
f5284f61 IZ |
1266 | case iter_amg: /* XXXX Eventually should do to_gv. */ |
1267 | case to_sv_amg: | |
1268 | case to_av_amg: | |
1269 | case to_hv_amg: | |
1270 | case to_gv_amg: | |
1271 | case to_cv_amg: | |
1272 | /* FAIL safe */ | |
1273 | return NULL; /* Delegate operation to standard mechanisms. */ | |
1274 | break; | |
a0d0e21e LW |
1275 | default: |
1276 | goto not_found; | |
1277 | } | |
1278 | if (!cv) goto not_found; | |
1279 | } else if (!(AMGf_noright & flags) && SvAMAGIC(right) | |
1280 | && (mg = mg_find((SV*)(stash=SvSTASH(SvRV(right))),'c')) | |
a6006777 | 1281 | && (cvp = (AMT_AMAGIC((AMT*)mg->mg_ptr) |
1282 | ? (amtp = (AMT*)mg->mg_ptr)->table | |
8ac85365 | 1283 | : (CV **) NULL)) |
a0d0e21e LW |
1284 | && (cv = cvp[off=method])) { /* Method for right |
1285 | * argument found */ | |
1286 | lr=1; | |
748a9306 | 1287 | } else if (((ocvp && oamtp->fallback > AMGfallNEVER |
4633a7c4 | 1288 | && (cvp=ocvp) && (lr = -1)) |
a0d0e21e LW |
1289 | || (cvp && amtp->fallback > AMGfallNEVER && (lr=1))) |
1290 | && !(flags & AMGf_unary)) { | |
1291 | /* We look for substitution for | |
1292 | * comparison operations and | |
fc36a67e | 1293 | * concatenation */ |
a0d0e21e LW |
1294 | if (method==concat_amg || method==concat_ass_amg |
1295 | || method==repeat_amg || method==repeat_ass_amg) { | |
1296 | return NULL; /* Delegate operation to string conversion */ | |
1297 | } | |
1298 | off = -1; | |
1299 | switch (method) { | |
1300 | case lt_amg: | |
1301 | case le_amg: | |
1302 | case gt_amg: | |
1303 | case ge_amg: | |
1304 | case eq_amg: | |
1305 | case ne_amg: | |
1306 | postpr = 1; off=ncmp_amg; break; | |
1307 | case slt_amg: | |
1308 | case sle_amg: | |
1309 | case sgt_amg: | |
1310 | case sge_amg: | |
1311 | case seq_amg: | |
1312 | case sne_amg: | |
1313 | postpr = 1; off=scmp_amg; break; | |
1314 | } | |
1315 | if (off != -1) cv = cvp[off]; | |
1316 | if (!cv) { | |
1317 | goto not_found; | |
1318 | } | |
1319 | } else { | |
a6006777 | 1320 | not_found: /* No method found, either report or croak */ |
a0d0e21e LW |
1321 | if (ocvp && (cv=ocvp[nomethod_amg])) { /* Call report method */ |
1322 | notfound = 1; lr = -1; | |
1323 | } else if (cvp && (cv=cvp[nomethod_amg])) { | |
1324 | notfound = 1; lr = 1; | |
1325 | } else { | |
46fc3d4c | 1326 | SV *msg; |
774d564b | 1327 | if (off==-1) off=method; |
cea2e8a9 | 1328 | msg = sv_2mortal(Perl_newSVpvf(aTHX_ |
46fc3d4c | 1329 | "Operation `%s': no method found,%sargument %s%s%s%s", |
22c35a8c | 1330 | PL_AMG_names[method + assignshift], |
e7ea3e70 | 1331 | (flags & AMGf_unary ? " " : "\n\tleft "), |
a0d0e21e LW |
1332 | SvAMAGIC(left)? |
1333 | "in overloaded package ": | |
1334 | "has no overloaded magic", | |
1335 | SvAMAGIC(left)? | |
1336 | HvNAME(SvSTASH(SvRV(left))): | |
1337 | "", | |
1338 | SvAMAGIC(right)? | |
e7ea3e70 IZ |
1339 | ",\n\tright argument in overloaded package ": |
1340 | (flags & AMGf_unary | |
1341 | ? "" | |
1342 | : ",\n\tright argument has no overloaded magic"), | |
a0d0e21e LW |
1343 | SvAMAGIC(right)? |
1344 | HvNAME(SvSTASH(SvRV(right))): | |
46fc3d4c | 1345 | "")); |
a0d0e21e | 1346 | if (amtp && amtp->fallback >= AMGfallYES) { |
cea2e8a9 | 1347 | DEBUG_o( Perl_deb(aTHX_ "%s", SvPVX(msg)) ); |
a0d0e21e | 1348 | } else { |
cea2e8a9 | 1349 | Perl_croak(aTHX_ "%_", msg); |
a0d0e21e LW |
1350 | } |
1351 | return NULL; | |
1352 | } | |
ee239bfe | 1353 | force_cpy = force_cpy || assign; |
a0d0e21e LW |
1354 | } |
1355 | } | |
1356 | if (!notfound) { | |
cea2e8a9 | 1357 | DEBUG_o( Perl_deb(aTHX_ |
46fc3d4c | 1358 | "Overloaded operator `%s'%s%s%s:\n\tmethod%s found%s in package %s%s\n", |
22c35a8c | 1359 | PL_AMG_names[off], |
748a9306 LW |
1360 | method+assignshift==off? "" : |
1361 | " (initially `", | |
1362 | method+assignshift==off? "" : | |
22c35a8c | 1363 | PL_AMG_names[method+assignshift], |
748a9306 LW |
1364 | method+assignshift==off? "" : "')", |
1365 | flags & AMGf_unary? "" : | |
1366 | lr==1 ? " for right argument": " for left argument", | |
1367 | flags & AMGf_unary? " for argument" : "", | |
a0d0e21e LW |
1368 | HvNAME(stash), |
1369 | fl? ",\n\tassignment variant used": "") ); | |
ee239bfe | 1370 | } |
748a9306 LW |
1371 | /* Since we use shallow copy during assignment, we need |
1372 | * to dublicate the contents, probably calling user-supplied | |
1373 | * version of copy operator | |
1374 | */ | |
ee239bfe IZ |
1375 | /* We need to copy in following cases: |
1376 | * a) Assignment form was called. | |
1377 | * assignshift==1, assign==T, method + 1 == off | |
1378 | * b) Increment or decrement, called directly. | |
1379 | * assignshift==0, assign==0, method + 0 == off | |
1380 | * c) Increment or decrement, translated to assignment add/subtr. | |
1381 | * assignshift==0, assign==T, | |
1382 | * force_cpy == T | |
1383 | * d) Increment or decrement, translated to nomethod. | |
1384 | * assignshift==0, assign==0, | |
1385 | * force_cpy == T | |
1386 | * e) Assignment form translated to nomethod. | |
1387 | * assignshift==1, assign==T, method + 1 != off | |
1388 | * force_cpy == T | |
1389 | */ | |
1390 | /* off is method, method+assignshift, or a result of opcode substitution. | |
1391 | * In the latter case assignshift==0, so only notfound case is important. | |
1392 | */ | |
1393 | if (( (method + assignshift == off) | |
1394 | && (assign || (method == inc_amg) || (method == dec_amg))) | |
1395 | || force_cpy) | |
1396 | RvDEEPCP(left); | |
a0d0e21e LW |
1397 | { |
1398 | dSP; | |
1399 | BINOP myop; | |
1400 | SV* res; | |
54310121 | 1401 | bool oldcatch = CATCH_GET; |
a0d0e21e | 1402 | |
54310121 | 1403 | CATCH_SET(TRUE); |
a0d0e21e LW |
1404 | Zero(&myop, 1, BINOP); |
1405 | myop.op_last = (OP *) &myop; | |
1406 | myop.op_next = Nullop; | |
54310121 | 1407 | myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED; |
a0d0e21e | 1408 | |
e788e7d3 | 1409 | PUSHSTACKi(PERLSI_OVERLOAD); |
a0d0e21e | 1410 | ENTER; |
462e5cf6 | 1411 | SAVEOP(); |
533c011a | 1412 | PL_op = (OP *) &myop; |
3280af22 | 1413 | if (PERLDB_SUB && PL_curstash != PL_debstash) |
533c011a | 1414 | PL_op->op_private |= OPpENTERSUB_DB; |
a0d0e21e | 1415 | PUTBACK; |
cea2e8a9 | 1416 | pp_pushmark(); |
a0d0e21e | 1417 | |
924508f0 | 1418 | EXTEND(SP, notfound + 5); |
a0d0e21e LW |
1419 | PUSHs(lr>0? right: left); |
1420 | PUSHs(lr>0? left: right); | |
3280af22 | 1421 | PUSHs( lr > 0 ? &PL_sv_yes : ( assign ? &PL_sv_undef : &PL_sv_no )); |
a0d0e21e | 1422 | if (notfound) { |
22c35a8c | 1423 | PUSHs( sv_2mortal(newSVpv((char *)PL_AMG_names[method + assignshift],0))); |
a0d0e21e LW |
1424 | } |
1425 | PUSHs((SV*)cv); | |
1426 | PUTBACK; | |
1427 | ||
cea2e8a9 GS |
1428 | if (PL_op = Perl_pp_entersub(aTHX)) |
1429 | CALLRUNOPS(aTHX); | |
a0d0e21e LW |
1430 | LEAVE; |
1431 | SPAGAIN; | |
1432 | ||
1433 | res=POPs; | |
ebafeae7 | 1434 | PUTBACK; |
d3acc0f7 | 1435 | POPSTACK; |
54310121 | 1436 | CATCH_SET(oldcatch); |
a0d0e21e | 1437 | |
a0d0e21e LW |
1438 | if (postpr) { |
1439 | int ans; | |
1440 | switch (method) { | |
1441 | case le_amg: | |
1442 | case sle_amg: | |
1443 | ans=SvIV(res)<=0; break; | |
1444 | case lt_amg: | |
1445 | case slt_amg: | |
1446 | ans=SvIV(res)<0; break; | |
1447 | case ge_amg: | |
1448 | case sge_amg: | |
1449 | ans=SvIV(res)>=0; break; | |
1450 | case gt_amg: | |
1451 | case sgt_amg: | |
1452 | ans=SvIV(res)>0; break; | |
1453 | case eq_amg: | |
1454 | case seq_amg: | |
1455 | ans=SvIV(res)==0; break; | |
1456 | case ne_amg: | |
1457 | case sne_amg: | |
1458 | ans=SvIV(res)!=0; break; | |
1459 | case inc_amg: | |
1460 | case dec_amg: | |
bbce6d69 | 1461 | SvSetSV(left,res); return left; |
dc437b57 | 1462 | case not_amg: |
fe7ac86a | 1463 | ans=!SvTRUE(res); break; |
a0d0e21e | 1464 | } |
54310121 | 1465 | return boolSV(ans); |
748a9306 LW |
1466 | } else if (method==copy_amg) { |
1467 | if (!SvROK(res)) { | |
cea2e8a9 | 1468 | Perl_croak(aTHX_ "Copy method did not return a reference"); |
748a9306 LW |
1469 | } |
1470 | return SvREFCNT_inc(SvRV(res)); | |
a0d0e21e LW |
1471 | } else { |
1472 | return res; | |
1473 | } | |
1474 | } | |
1475 | } |