Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
4eb8286e | 3 | * Copyright (c) 1991-1999, Larry Wall |
a0d0e21e 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 | * | |
8 | */ | |
9 | ||
10 | /* | |
11 | * Then he heard Merry change the note, and up went the Horn-cry of Buckland, | |
12 | * shaking the air. | |
13 | * | |
14 | * Awake! Awake! Fear, Fire, Foes! Awake! | |
15 | * Fire, Foes! Awake! | |
16 | */ | |
17 | ||
18 | #include "EXTERN.h" | |
864dbfa3 | 19 | #define PERL_IN_PP_HOT_C |
a0d0e21e LW |
20 | #include "perl.h" |
21 | ||
8ac85365 NIS |
22 | #ifdef I_UNISTD |
23 | #include <unistd.h> | |
24 | #endif | |
9d116dd7 JH |
25 | #ifdef I_FCNTL |
26 | #include <fcntl.h> | |
27 | #endif | |
28 | #ifdef I_SYS_FILE | |
29 | #include <sys/file.h> | |
30 | #endif | |
8ac85365 | 31 | |
a0ed51b3 LW |
32 | #define HOP(pos,off) (IN_UTF8 ? utf8_hop(pos, off) : (pos + off)) |
33 | ||
a0d0e21e LW |
34 | /* Hot code. */ |
35 | ||
11343788 | 36 | #ifdef USE_THREADS |
51371543 | 37 | static void unset_cvowner(pTHXo_ void *cvarg); |
11343788 MB |
38 | #endif /* USE_THREADS */ |
39 | ||
a0d0e21e LW |
40 | PP(pp_const) |
41 | { | |
4e35701f | 42 | djSP; |
a0d0e21e LW |
43 | XPUSHs(cSVOP->op_sv); |
44 | RETURN; | |
45 | } | |
46 | ||
47 | PP(pp_nextstate) | |
48 | { | |
533c011a | 49 | PL_curcop = (COP*)PL_op; |
a0d0e21e | 50 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 51 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e LW |
52 | FREETMPS; |
53 | return NORMAL; | |
54 | } | |
55 | ||
56 | PP(pp_gvsv) | |
57 | { | |
4e35701f | 58 | djSP; |
924508f0 | 59 | EXTEND(SP,1); |
533c011a | 60 | if (PL_op->op_private & OPpLVAL_INTRO) |
a0d0e21e LW |
61 | PUSHs(save_scalar(cGVOP->op_gv)); |
62 | else | |
63 | PUSHs(GvSV(cGVOP->op_gv)); | |
64 | RETURN; | |
65 | } | |
66 | ||
67 | PP(pp_null) | |
68 | { | |
69 | return NORMAL; | |
70 | } | |
71 | ||
7399586d HS |
72 | PP(pp_setstate) |
73 | { | |
74 | PL_curcop = (COP*)PL_op; | |
75 | return NORMAL; | |
76 | } | |
77 | ||
a0d0e21e LW |
78 | PP(pp_pushmark) |
79 | { | |
3280af22 | 80 | PUSHMARK(PL_stack_sp); |
a0d0e21e LW |
81 | return NORMAL; |
82 | } | |
83 | ||
84 | PP(pp_stringify) | |
85 | { | |
4e35701f | 86 | djSP; dTARGET; |
a0d0e21e LW |
87 | STRLEN len; |
88 | char *s; | |
89 | s = SvPV(TOPs,len); | |
90 | sv_setpvn(TARG,s,len); | |
91 | SETTARG; | |
92 | RETURN; | |
93 | } | |
94 | ||
95 | PP(pp_gv) | |
96 | { | |
4e35701f | 97 | djSP; |
a0d0e21e LW |
98 | XPUSHs((SV*)cGVOP->op_gv); |
99 | RETURN; | |
100 | } | |
101 | ||
102 | PP(pp_and) | |
103 | { | |
4e35701f | 104 | djSP; |
a0d0e21e LW |
105 | if (!SvTRUE(TOPs)) |
106 | RETURN; | |
107 | else { | |
108 | --SP; | |
109 | RETURNOP(cLOGOP->op_other); | |
110 | } | |
111 | } | |
112 | ||
113 | PP(pp_sassign) | |
114 | { | |
4e35701f | 115 | djSP; dPOPTOPssrl; |
748a9306 LW |
116 | MAGIC *mg; |
117 | ||
533c011a | 118 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
a0d0e21e LW |
119 | SV *temp; |
120 | temp = left; left = right; right = temp; | |
121 | } | |
3280af22 | 122 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e | 123 | TAINT_NOT; |
54310121 | 124 | SvSetMagicSV(right, left); |
a0d0e21e LW |
125 | SETs(right); |
126 | RETURN; | |
127 | } | |
128 | ||
129 | PP(pp_cond_expr) | |
130 | { | |
4e35701f | 131 | djSP; |
a0d0e21e | 132 | if (SvTRUEx(POPs)) |
1a67a97c | 133 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 134 | else |
1a67a97c | 135 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
136 | } |
137 | ||
138 | PP(pp_unstack) | |
139 | { | |
140 | I32 oldsave; | |
141 | TAINT_NOT; /* Each statement is presumed innocent */ | |
3280af22 | 142 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 143 | FREETMPS; |
3280af22 | 144 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
145 | LEAVE_SCOPE(oldsave); |
146 | return NORMAL; | |
147 | } | |
148 | ||
a0d0e21e LW |
149 | PP(pp_concat) |
150 | { | |
4e35701f | 151 | djSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 LW |
152 | { |
153 | dPOPTOPssrl; | |
a0d0e21e LW |
154 | STRLEN len; |
155 | char *s; | |
156 | if (TARG != left) { | |
157 | s = SvPV(left,len); | |
158 | sv_setpvn(TARG,s,len); | |
159 | } | |
c07a80fd | 160 | else if (SvGMAGICAL(TARG)) |
161 | mg_get(TARG); | |
7a4c00b4 | 162 | else if (!SvOK(TARG) && SvTYPE(TARG) <= SVt_PVMG) { |
748a9306 | 163 | sv_setpv(TARG, ""); /* Suppress warning. */ |
7a4c00b4 | 164 | s = SvPV_force(TARG, len); |
4633a7c4 | 165 | } |
a0d0e21e | 166 | s = SvPV(right,len); |
68dc0745 | 167 | if (SvOK(TARG)) |
168 | sv_catpvn(TARG,s,len); | |
169 | else | |
170 | sv_setpvn(TARG,s,len); /* suppress warning */ | |
a0d0e21e LW |
171 | SETTARG; |
172 | RETURN; | |
748a9306 | 173 | } |
a0d0e21e LW |
174 | } |
175 | ||
176 | PP(pp_padsv) | |
177 | { | |
4e35701f | 178 | djSP; dTARGET; |
a0d0e21e | 179 | XPUSHs(TARG); |
533c011a NIS |
180 | if (PL_op->op_flags & OPf_MOD) { |
181 | if (PL_op->op_private & OPpLVAL_INTRO) | |
182 | SAVECLEARSV(PL_curpad[PL_op->op_targ]); | |
183 | else if (PL_op->op_private & OPpDEREF) { | |
8ec5e241 | 184 | PUTBACK; |
533c011a | 185 | vivify_ref(PL_curpad[PL_op->op_targ], PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
186 | SPAGAIN; |
187 | } | |
4633a7c4 | 188 | } |
a0d0e21e LW |
189 | RETURN; |
190 | } | |
191 | ||
192 | PP(pp_readline) | |
193 | { | |
f5284f61 | 194 | tryAMAGICunTARGET(iter, 0); |
3280af22 | 195 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 GS |
196 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
197 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) | |
f5284f61 | 198 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 | 199 | else { |
f5284f61 IZ |
200 | dSP; |
201 | XPUSHs((SV*)PL_last_in_gv); | |
202 | PUTBACK; | |
cea2e8a9 | 203 | pp_rv2gv(); |
f5284f61 | 204 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 IZ |
205 | } |
206 | } | |
a0d0e21e LW |
207 | return do_readline(); |
208 | } | |
209 | ||
210 | PP(pp_eq) | |
211 | { | |
4e35701f | 212 | djSP; tryAMAGICbinSET(eq,0); |
a0d0e21e LW |
213 | { |
214 | dPOPnv; | |
54310121 | 215 | SETs(boolSV(TOPn == value)); |
a0d0e21e LW |
216 | RETURN; |
217 | } | |
218 | } | |
219 | ||
220 | PP(pp_preinc) | |
221 | { | |
4e35701f | 222 | djSP; |
68dc0745 | 223 | if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV) |
cea2e8a9 | 224 | Perl_croak(aTHX_ PL_no_modify); |
25da4f38 | 225 | if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) && |
55497cff | 226 | SvIVX(TOPs) != IV_MAX) |
227 | { | |
748a9306 | 228 | ++SvIVX(TOPs); |
55497cff | 229 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 LW |
230 | } |
231 | else | |
232 | sv_inc(TOPs); | |
a0d0e21e LW |
233 | SvSETMAGIC(TOPs); |
234 | return NORMAL; | |
235 | } | |
236 | ||
237 | PP(pp_or) | |
238 | { | |
4e35701f | 239 | djSP; |
a0d0e21e LW |
240 | if (SvTRUE(TOPs)) |
241 | RETURN; | |
242 | else { | |
243 | --SP; | |
244 | RETURNOP(cLOGOP->op_other); | |
245 | } | |
246 | } | |
247 | ||
248 | PP(pp_add) | |
249 | { | |
4e35701f | 250 | djSP; dATARGET; tryAMAGICbin(add,opASSIGN); |
a0d0e21e | 251 | { |
7a4c00b4 | 252 | dPOPTOPnnrl_ul; |
a0d0e21e LW |
253 | SETn( left + right ); |
254 | RETURN; | |
255 | } | |
256 | } | |
257 | ||
258 | PP(pp_aelemfast) | |
259 | { | |
4e35701f | 260 | djSP; |
a0d0e21e | 261 | AV *av = GvAV((GV*)cSVOP->op_sv); |
533c011a NIS |
262 | U32 lval = PL_op->op_flags & OPf_MOD; |
263 | SV** svp = av_fetch(av, PL_op->op_private, lval); | |
3280af22 | 264 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 265 | EXTEND(SP, 1); |
be6c24e0 GS |
266 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
267 | sv = sv_mortalcopy(sv); | |
268 | PUSHs(sv); | |
a0d0e21e LW |
269 | RETURN; |
270 | } | |
271 | ||
272 | PP(pp_join) | |
273 | { | |
4e35701f | 274 | djSP; dMARK; dTARGET; |
a0d0e21e LW |
275 | MARK++; |
276 | do_join(TARG, *MARK, MARK, SP); | |
277 | SP = MARK; | |
278 | SETs(TARG); | |
279 | RETURN; | |
280 | } | |
281 | ||
282 | PP(pp_pushre) | |
283 | { | |
4e35701f | 284 | djSP; |
44a8e56a | 285 | #ifdef DEBUGGING |
286 | /* | |
287 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
288 | * will be enough to hold an OP*. | |
289 | */ | |
290 | SV* sv = sv_newmortal(); | |
291 | sv_upgrade(sv, SVt_PVLV); | |
292 | LvTYPE(sv) = '/'; | |
533c011a | 293 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 294 | XPUSHs(sv); |
295 | #else | |
6b88bc9c | 296 | XPUSHs((SV*)PL_op); |
44a8e56a | 297 | #endif |
a0d0e21e LW |
298 | RETURN; |
299 | } | |
300 | ||
301 | /* Oversized hot code. */ | |
302 | ||
303 | PP(pp_print) | |
304 | { | |
4e35701f | 305 | djSP; dMARK; dORIGMARK; |
a0d0e21e LW |
306 | GV *gv; |
307 | IO *io; | |
760ac839 | 308 | register PerlIO *fp; |
236988e4 | 309 | MAGIC *mg; |
2d8e6c8d | 310 | STRLEN n_a; |
a0d0e21e | 311 | |
533c011a | 312 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
313 | gv = (GV*)*++MARK; |
314 | else | |
3280af22 | 315 | gv = PL_defoutgv; |
33c27489 | 316 | if (mg = SvTIED_mg((SV*)gv, 'q')) { |
68dc0745 | 317 | if (MARK == ORIGMARK) { |
a60c0954 NIS |
318 | /* If using default handle then we need to make space to |
319 | * pass object as 1st arg, so move other args up ... | |
320 | */ | |
4352c267 | 321 | MEXTEND(SP, 1); |
68dc0745 | 322 | ++MARK; |
323 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
324 | ++SP; | |
325 | } | |
326 | PUSHMARK(MARK - 1); | |
33c27489 | 327 | *MARK = SvTIED_obj((SV*)gv, mg); |
68dc0745 | 328 | PUTBACK; |
236988e4 | 329 | ENTER; |
864dbfa3 | 330 | call_method("PRINT", G_SCALAR); |
236988e4 | 331 | LEAVE; |
332 | SPAGAIN; | |
68dc0745 | 333 | MARK = ORIGMARK + 1; |
334 | *MARK = *SP; | |
335 | SP = MARK; | |
236988e4 | 336 | RETURN; |
337 | } | |
a0d0e21e | 338 | if (!(io = GvIO(gv))) { |
599cee73 | 339 | if (ckWARN(WARN_UNOPENED)) { |
748a9306 | 340 | SV* sv = sv_newmortal(); |
af8c498a GS |
341 | gv_efullname3(sv, gv, Nullch); |
342 | Perl_warner(aTHX_ WARN_UNOPENED, "Filehandle %s never opened", | |
343 | SvPV(sv,n_a)); | |
748a9306 | 344 | } |
748a9306 | 345 | SETERRNO(EBADF,RMS$_IFI); |
a0d0e21e LW |
346 | goto just_say_no; |
347 | } | |
348 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 349 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
748a9306 | 350 | SV* sv = sv_newmortal(); |
af8c498a | 351 | gv_efullname3(sv, gv, Nullch); |
a0d0e21e | 352 | if (IoIFP(io)) |
af8c498a GS |
353 | Perl_warner(aTHX_ WARN_IO, |
354 | "Filehandle %s opened only for input", | |
355 | SvPV(sv,n_a)); | |
599cee73 | 356 | else if (ckWARN(WARN_CLOSED)) |
af8c498a GS |
357 | Perl_warner(aTHX_ WARN_CLOSED, |
358 | "print on closed filehandle %s", SvPV(sv,n_a)); | |
a0d0e21e | 359 | } |
748a9306 | 360 | SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI); |
a0d0e21e LW |
361 | goto just_say_no; |
362 | } | |
363 | else { | |
364 | MARK++; | |
3280af22 | 365 | if (PL_ofslen) { |
a0d0e21e LW |
366 | while (MARK <= SP) { |
367 | if (!do_print(*MARK, fp)) | |
368 | break; | |
369 | MARK++; | |
370 | if (MARK <= SP) { | |
3280af22 | 371 | if (PerlIO_write(fp, PL_ofs, PL_ofslen) == 0 || PerlIO_error(fp)) { |
a0d0e21e LW |
372 | MARK--; |
373 | break; | |
374 | } | |
375 | } | |
376 | } | |
377 | } | |
378 | else { | |
379 | while (MARK <= SP) { | |
380 | if (!do_print(*MARK, fp)) | |
381 | break; | |
382 | MARK++; | |
383 | } | |
384 | } | |
385 | if (MARK <= SP) | |
386 | goto just_say_no; | |
387 | else { | |
3280af22 NIS |
388 | if (PL_orslen) |
389 | if (PerlIO_write(fp, PL_ors, PL_orslen) == 0 || PerlIO_error(fp)) | |
a0d0e21e LW |
390 | goto just_say_no; |
391 | ||
392 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 393 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
394 | goto just_say_no; |
395 | } | |
396 | } | |
397 | SP = ORIGMARK; | |
3280af22 | 398 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
399 | RETURN; |
400 | ||
401 | just_say_no: | |
402 | SP = ORIGMARK; | |
3280af22 | 403 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
404 | RETURN; |
405 | } | |
406 | ||
407 | PP(pp_rv2av) | |
408 | { | |
f5284f61 | 409 | djSP; dTOPss; |
a0d0e21e LW |
410 | AV *av; |
411 | ||
412 | if (SvROK(sv)) { | |
413 | wasref: | |
f5284f61 IZ |
414 | tryAMAGICunDEREF(to_av); |
415 | ||
a0d0e21e LW |
416 | av = (AV*)SvRV(sv); |
417 | if (SvTYPE(av) != SVt_PVAV) | |
cea2e8a9 | 418 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a | 419 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 420 | SETs((SV*)av); |
a0d0e21e LW |
421 | RETURN; |
422 | } | |
423 | } | |
424 | else { | |
425 | if (SvTYPE(sv) == SVt_PVAV) { | |
426 | av = (AV*)sv; | |
533c011a | 427 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 428 | SETs((SV*)av); |
a0d0e21e LW |
429 | RETURN; |
430 | } | |
431 | } | |
432 | else { | |
67955e0c | 433 | GV *gv; |
434 | ||
a0d0e21e | 435 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 436 | char *sym; |
2d8e6c8d | 437 | STRLEN n_a; |
748a9306 | 438 | |
a0d0e21e LW |
439 | if (SvGMAGICAL(sv)) { |
440 | mg_get(sv); | |
441 | if (SvROK(sv)) | |
442 | goto wasref; | |
443 | } | |
444 | if (!SvOK(sv)) { | |
533c011a NIS |
445 | if (PL_op->op_flags & OPf_REF || |
446 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 447 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 | 448 | if (ckWARN(WARN_UNINITIALIZED)) |
cea2e8a9 | 449 | Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit); |
f5284f61 | 450 | if (GIMME == G_ARRAY) { |
c2444246 | 451 | (void)POPs; |
4633a7c4 | 452 | RETURN; |
f5284f61 IZ |
453 | } |
454 | RETSETUNDEF; | |
a0d0e21e | 455 | } |
2d8e6c8d | 456 | sym = SvPV(sv,n_a); |
35cd451c GS |
457 | if ((PL_op->op_flags & OPf_SPECIAL) && |
458 | !(PL_op->op_flags & OPf_MOD)) | |
459 | { | |
460 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV); | |
461 | if (!gv) | |
462 | RETSETUNDEF; | |
463 | } | |
464 | else { | |
465 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 466 | DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); |
35cd451c GS |
467 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
468 | } | |
469 | } | |
470 | else { | |
67955e0c | 471 | gv = (GV*)sv; |
a0d0e21e | 472 | } |
67955e0c | 473 | av = GvAVn(gv); |
533c011a | 474 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 475 | av = save_ary(gv); |
533c011a | 476 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 477 | SETs((SV*)av); |
a0d0e21e LW |
478 | RETURN; |
479 | } | |
480 | } | |
481 | } | |
482 | ||
483 | if (GIMME == G_ARRAY) { | |
484 | I32 maxarg = AvFILL(av) + 1; | |
c2444246 | 485 | (void)POPs; /* XXXX May be optimized away? */ |
93965878 NIS |
486 | EXTEND(SP, maxarg); |
487 | if (SvRMAGICAL(av)) { | |
488 | U32 i; | |
489 | for (i=0; i < maxarg; i++) { | |
490 | SV **svp = av_fetch(av, i, FALSE); | |
3280af22 | 491 | SP[i+1] = (svp) ? *svp : &PL_sv_undef; |
93965878 NIS |
492 | } |
493 | } | |
494 | else { | |
495 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
496 | } | |
a0d0e21e LW |
497 | SP += maxarg; |
498 | } | |
499 | else { | |
500 | dTARGET; | |
501 | I32 maxarg = AvFILL(av) + 1; | |
f5284f61 | 502 | SETi(maxarg); |
a0d0e21e LW |
503 | } |
504 | RETURN; | |
505 | } | |
506 | ||
507 | PP(pp_rv2hv) | |
508 | { | |
4e35701f | 509 | djSP; dTOPss; |
a0d0e21e LW |
510 | HV *hv; |
511 | ||
512 | if (SvROK(sv)) { | |
513 | wasref: | |
f5284f61 IZ |
514 | tryAMAGICunDEREF(to_hv); |
515 | ||
a0d0e21e | 516 | hv = (HV*)SvRV(sv); |
c750a3ec | 517 | if (SvTYPE(hv) != SVt_PVHV && SvTYPE(hv) != SVt_PVAV) |
cea2e8a9 | 518 | DIE(aTHX_ "Not a HASH reference"); |
533c011a | 519 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
520 | SETs((SV*)hv); |
521 | RETURN; | |
522 | } | |
523 | } | |
524 | else { | |
c750a3ec | 525 | if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) { |
a0d0e21e | 526 | hv = (HV*)sv; |
533c011a | 527 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
528 | SETs((SV*)hv); |
529 | RETURN; | |
530 | } | |
531 | } | |
532 | else { | |
67955e0c | 533 | GV *gv; |
534 | ||
a0d0e21e | 535 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 536 | char *sym; |
2d8e6c8d | 537 | STRLEN n_a; |
748a9306 | 538 | |
a0d0e21e LW |
539 | if (SvGMAGICAL(sv)) { |
540 | mg_get(sv); | |
541 | if (SvROK(sv)) | |
542 | goto wasref; | |
543 | } | |
544 | if (!SvOK(sv)) { | |
533c011a NIS |
545 | if (PL_op->op_flags & OPf_REF || |
546 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 547 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 | 548 | if (ckWARN(WARN_UNINITIALIZED)) |
cea2e8a9 | 549 | Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit); |
4633a7c4 LW |
550 | if (GIMME == G_ARRAY) { |
551 | SP--; | |
552 | RETURN; | |
553 | } | |
a0d0e21e LW |
554 | RETSETUNDEF; |
555 | } | |
2d8e6c8d | 556 | sym = SvPV(sv,n_a); |
35cd451c GS |
557 | if ((PL_op->op_flags & OPf_SPECIAL) && |
558 | !(PL_op->op_flags & OPf_MOD)) | |
559 | { | |
560 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV); | |
561 | if (!gv) | |
562 | RETSETUNDEF; | |
563 | } | |
564 | else { | |
565 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 566 | DIE(aTHX_ PL_no_symref, sym, "a HASH"); |
35cd451c GS |
567 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
568 | } | |
569 | } | |
570 | else { | |
67955e0c | 571 | gv = (GV*)sv; |
a0d0e21e | 572 | } |
67955e0c | 573 | hv = GvHVn(gv); |
533c011a | 574 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 575 | hv = save_hash(gv); |
533c011a | 576 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
577 | SETs((SV*)hv); |
578 | RETURN; | |
579 | } | |
580 | } | |
581 | } | |
582 | ||
583 | if (GIMME == G_ARRAY) { /* array wanted */ | |
3280af22 | 584 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 | 585 | return do_kv(); |
a0d0e21e LW |
586 | } |
587 | else { | |
588 | dTARGET; | |
4b154ab5 GA |
589 | if (SvTYPE(hv) == SVt_PVAV) |
590 | hv = avhv_keys((AV*)hv); | |
46fc3d4c | 591 | if (HvFILL(hv)) |
cf2093f6 JH |
592 | #ifdef IV_IS_QUAD |
593 | Perl_sv_setpvf(aTHX_ TARG, "%" PERL_PRId64 "/%" PERL_PRId64, | |
594 | (Quad_t)HvFILL(hv), (Quad_t)HvMAX(hv) + 1); | |
595 | #else | |
596 | Perl_sv_setpvf(aTHX_ TARG, "%ld/%ld", | |
597 | (long)HvFILL(hv), (long)HvMAX(hv) + 1); | |
598 | #endif | |
a0d0e21e LW |
599 | else |
600 | sv_setiv(TARG, 0); | |
c750a3ec | 601 | |
a0d0e21e LW |
602 | SETTARG; |
603 | RETURN; | |
604 | } | |
605 | } | |
606 | ||
607 | PP(pp_aassign) | |
608 | { | |
4e35701f | 609 | djSP; |
3280af22 NIS |
610 | SV **lastlelem = PL_stack_sp; |
611 | SV **lastrelem = PL_stack_base + POPMARK; | |
612 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
613 | SV **firstlelem = lastrelem + 1; |
614 | ||
615 | register SV **relem; | |
616 | register SV **lelem; | |
617 | ||
618 | register SV *sv; | |
619 | register AV *ary; | |
620 | ||
54310121 | 621 | I32 gimme; |
a0d0e21e LW |
622 | HV *hash; |
623 | I32 i; | |
624 | int magic; | |
625 | ||
3280af22 | 626 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
a0d0e21e LW |
627 | |
628 | /* If there's a common identifier on both sides we have to take | |
629 | * special care that assigning the identifier on the left doesn't | |
630 | * clobber a value on the right that's used later in the list. | |
631 | */ | |
533c011a | 632 | if (PL_op->op_private & OPpASSIGN_COMMON) { |
cc5e57d2 | 633 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
a0d0e21e LW |
634 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
635 | /*SUPPRESS 560*/ | |
a1f49e72 CS |
636 | if (sv = *relem) { |
637 | TAINT_NOT; /* Each item is independent */ | |
a0d0e21e | 638 | *relem = sv_mortalcopy(sv); |
a1f49e72 | 639 | } |
a0d0e21e LW |
640 | } |
641 | } | |
642 | ||
643 | relem = firstrelem; | |
644 | lelem = firstlelem; | |
645 | ary = Null(AV*); | |
646 | hash = Null(HV*); | |
647 | while (lelem <= lastlelem) { | |
bbce6d69 | 648 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
649 | sv = *lelem++; |
650 | switch (SvTYPE(sv)) { | |
651 | case SVt_PVAV: | |
652 | ary = (AV*)sv; | |
748a9306 | 653 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e LW |
654 | |
655 | av_clear(ary); | |
7e42bd57 | 656 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
657 | i = 0; |
658 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 659 | SV **didstore; |
a0d0e21e LW |
660 | sv = NEWSV(28,0); |
661 | assert(*relem); | |
662 | sv_setsv(sv,*relem); | |
663 | *(relem++) = sv; | |
5117ca91 GS |
664 | didstore = av_store(ary,i++,sv); |
665 | if (magic) { | |
fb73857a | 666 | if (SvSMAGICAL(sv)) |
667 | mg_set(sv); | |
5117ca91 | 668 | if (!didstore) |
8127e0e3 | 669 | sv_2mortal(sv); |
5117ca91 | 670 | } |
bbce6d69 | 671 | TAINT_NOT; |
a0d0e21e LW |
672 | } |
673 | break; | |
674 | case SVt_PVHV: { | |
a0d0e21e LW |
675 | SV *tmpstr; |
676 | ||
677 | hash = (HV*)sv; | |
748a9306 | 678 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e LW |
679 | hv_clear(hash); |
680 | ||
681 | while (relem < lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 682 | HE *didstore; |
4633a7c4 | 683 | if (*relem) |
a0d0e21e | 684 | sv = *(relem++); |
4633a7c4 | 685 | else |
3280af22 | 686 | sv = &PL_sv_no, relem++; |
a0d0e21e LW |
687 | tmpstr = NEWSV(29,0); |
688 | if (*relem) | |
689 | sv_setsv(tmpstr,*relem); /* value */ | |
690 | *(relem++) = tmpstr; | |
5117ca91 GS |
691 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
692 | if (magic) { | |
fb73857a | 693 | if (SvSMAGICAL(tmpstr)) |
694 | mg_set(tmpstr); | |
5117ca91 | 695 | if (!didstore) |
8127e0e3 | 696 | sv_2mortal(tmpstr); |
5117ca91 | 697 | } |
bbce6d69 | 698 | TAINT_NOT; |
8e07c86e | 699 | } |
6a0deba8 GS |
700 | if (relem == lastrelem) { |
701 | if (*relem) { | |
702 | HE *didstore; | |
599cee73 | 703 | if (ckWARN(WARN_UNSAFE)) { |
6a0deba8 GS |
704 | if (relem == firstrelem && |
705 | SvROK(*relem) && | |
706 | ( SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
707 | SvTYPE(SvRV(*relem)) == SVt_PVHV ) ) | |
cea2e8a9 | 708 | Perl_warner(aTHX_ WARN_UNSAFE, "Reference found where even-sized list expected"); |
6a0deba8 | 709 | else |
cea2e8a9 | 710 | Perl_warner(aTHX_ WARN_UNSAFE, "Odd number of elements in hash assignment"); |
6a0deba8 GS |
711 | } |
712 | tmpstr = NEWSV(29,0); | |
713 | didstore = hv_store_ent(hash,*relem,tmpstr,0); | |
714 | if (magic) { | |
715 | if (SvSMAGICAL(tmpstr)) | |
716 | mg_set(tmpstr); | |
717 | if (!didstore) | |
8127e0e3 | 718 | sv_2mortal(tmpstr); |
6a0deba8 GS |
719 | } |
720 | TAINT_NOT; | |
721 | } | |
722 | relem++; | |
1930e939 | 723 | } |
a0d0e21e LW |
724 | } |
725 | break; | |
726 | default: | |
6fc92669 GS |
727 | if (SvIMMORTAL(sv)) { |
728 | if (relem <= lastrelem) | |
729 | relem++; | |
730 | break; | |
a0d0e21e LW |
731 | } |
732 | if (relem <= lastrelem) { | |
733 | sv_setsv(sv, *relem); | |
734 | *(relem++) = sv; | |
735 | } | |
736 | else | |
3280af22 | 737 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e LW |
738 | SvSETMAGIC(sv); |
739 | break; | |
740 | } | |
741 | } | |
3280af22 NIS |
742 | if (PL_delaymagic & ~DM_DELAY) { |
743 | if (PL_delaymagic & DM_UID) { | |
a0d0e21e | 744 | #ifdef HAS_SETRESUID |
b28d0864 | 745 | (void)setresuid(PL_uid,PL_euid,(Uid_t)-1); |
56febc5e AD |
746 | #else |
747 | # ifdef HAS_SETREUID | |
3280af22 | 748 | (void)setreuid(PL_uid,PL_euid); |
56febc5e AD |
749 | # else |
750 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
751 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
752 | (void)setruid(PL_uid); | |
753 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 754 | } |
56febc5e AD |
755 | # endif /* HAS_SETRUID */ |
756 | # ifdef HAS_SETEUID | |
b28d0864 NIS |
757 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
758 | (void)seteuid(PL_uid); | |
759 | PL_delaymagic &= ~DM_EUID; | |
a0d0e21e | 760 | } |
56febc5e | 761 | # endif /* HAS_SETEUID */ |
b28d0864 NIS |
762 | if (PL_delaymagic & DM_UID) { |
763 | if (PL_uid != PL_euid) | |
cea2e8a9 | 764 | DIE(aTHX_ "No setreuid available"); |
b28d0864 | 765 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e | 766 | } |
56febc5e AD |
767 | # endif /* HAS_SETREUID */ |
768 | #endif /* HAS_SETRESUID */ | |
3280af22 NIS |
769 | PL_uid = (int)PerlProc_getuid(); |
770 | PL_euid = (int)PerlProc_geteuid(); | |
a0d0e21e | 771 | } |
3280af22 | 772 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 773 | #ifdef HAS_SETRESGID |
b28d0864 | 774 | (void)setresgid(PL_gid,PL_egid,(Gid_t)-1); |
56febc5e AD |
775 | #else |
776 | # ifdef HAS_SETREGID | |
3280af22 | 777 | (void)setregid(PL_gid,PL_egid); |
56febc5e AD |
778 | # else |
779 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
780 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
781 | (void)setrgid(PL_gid); | |
782 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 783 | } |
56febc5e AD |
784 | # endif /* HAS_SETRGID */ |
785 | # ifdef HAS_SETEGID | |
b28d0864 NIS |
786 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
787 | (void)setegid(PL_gid); | |
788 | PL_delaymagic &= ~DM_EGID; | |
a0d0e21e | 789 | } |
56febc5e | 790 | # endif /* HAS_SETEGID */ |
b28d0864 NIS |
791 | if (PL_delaymagic & DM_GID) { |
792 | if (PL_gid != PL_egid) | |
cea2e8a9 | 793 | DIE(aTHX_ "No setregid available"); |
b28d0864 | 794 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e | 795 | } |
56febc5e AD |
796 | # endif /* HAS_SETREGID */ |
797 | #endif /* HAS_SETRESGID */ | |
3280af22 NIS |
798 | PL_gid = (int)PerlProc_getgid(); |
799 | PL_egid = (int)PerlProc_getegid(); | |
a0d0e21e | 800 | } |
3280af22 | 801 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e | 802 | } |
3280af22 | 803 | PL_delaymagic = 0; |
54310121 | 804 | |
805 | gimme = GIMME_V; | |
806 | if (gimme == G_VOID) | |
807 | SP = firstrelem - 1; | |
808 | else if (gimme == G_SCALAR) { | |
809 | dTARGET; | |
810 | SP = firstrelem; | |
811 | SETi(lastrelem - firstrelem + 1); | |
812 | } | |
813 | else { | |
a0d0e21e LW |
814 | if (ary || hash) |
815 | SP = lastrelem; | |
816 | else | |
817 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 818 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 819 | while (relem <= SP) |
3280af22 | 820 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 821 | } |
54310121 | 822 | RETURN; |
a0d0e21e LW |
823 | } |
824 | ||
8782bef2 GB |
825 | PP(pp_qr) |
826 | { | |
827 | djSP; | |
828 | register PMOP *pm = cPMOP; | |
829 | SV *rv = sv_newmortal(); | |
57668c4d | 830 | SV *sv = newSVrv(rv, "Regexp"); |
8782bef2 GB |
831 | sv_magic(sv,(SV*)ReREFCNT_inc(pm->op_pmregexp),'r',0,0); |
832 | RETURNX(PUSHs(rv)); | |
833 | } | |
834 | ||
a0d0e21e LW |
835 | PP(pp_match) |
836 | { | |
4e35701f | 837 | djSP; dTARG; |
a0d0e21e LW |
838 | register PMOP *pm = cPMOP; |
839 | register char *t; | |
840 | register char *s; | |
841 | char *strend; | |
842 | I32 global; | |
f722798b IZ |
843 | I32 r_flags = REXEC_CHECKED; |
844 | char *truebase; /* Start of string */ | |
d9f97599 | 845 | register REGEXP *rx = pm->op_pmregexp; |
b3eb6a9b | 846 | bool rxtainted; |
a0d0e21e LW |
847 | I32 gimme = GIMME; |
848 | STRLEN len; | |
748a9306 | 849 | I32 minmatch = 0; |
3280af22 | 850 | I32 oldsave = PL_savestack_ix; |
f86702cc | 851 | I32 update_minmatch = 1; |
e60df1fa | 852 | I32 had_zerolen = 0; |
a0d0e21e | 853 | |
533c011a | 854 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
855 | TARG = POPs; |
856 | else { | |
54b9620d | 857 | TARG = DEFSV; |
a0d0e21e LW |
858 | EXTEND(SP,1); |
859 | } | |
c277df42 | 860 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e LW |
861 | s = SvPV(TARG, len); |
862 | strend = s + len; | |
863 | if (!s) | |
cea2e8a9 | 864 | DIE(aTHX_ "panic: do_match"); |
b3eb6a9b | 865 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 | 866 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 867 | TAINT_NOT; |
a0d0e21e | 868 | |
48c036b1 | 869 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 | 870 | failure: |
a0d0e21e LW |
871 | if (gimme == G_ARRAY) |
872 | RETURN; | |
873 | RETPUSHNO; | |
874 | } | |
875 | ||
3280af22 NIS |
876 | if (!rx->prelen && PL_curpm) { |
877 | pm = PL_curpm; | |
d9f97599 | 878 | rx = pm->op_pmregexp; |
a0d0e21e | 879 | } |
d9f97599 | 880 | if (rx->minlen > len) goto failure; |
c277df42 | 881 | |
a0d0e21e | 882 | truebase = t = s; |
ad94a511 IZ |
883 | |
884 | /* XXXX What part of this is needed with true \G-support? */ | |
a0d0e21e | 885 | if (global = pm->op_pmflags & PMf_GLOBAL) { |
cf93c79d | 886 | rx->startp[0] = -1; |
a0d0e21e LW |
887 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
888 | MAGIC* mg = mg_find(TARG, 'g'); | |
565764a8 | 889 | if (mg && mg->mg_len >= 0) { |
b7a35066 | 890 | if (!(rx->reganch & ROPT_GPOS_SEEN)) |
cf93c79d | 891 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e HS |
892 | else if (rx->reganch & ROPT_ANCH_GPOS) { |
893 | r_flags |= REXEC_IGNOREPOS; | |
cf93c79d | 894 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e | 895 | } |
748a9306 | 896 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc | 897 | update_minmatch = 0; |
748a9306 | 898 | } |
a0d0e21e LW |
899 | } |
900 | } | |
0ef3e39e HS |
901 | if ((gimme != G_ARRAY && !global && rx->nparens) |
902 | || SvTEMP(TARG) || PL_sawampersand) | |
903 | r_flags |= REXEC_COPY_STR; | |
f722798b | 904 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
905 | r_flags |= REXEC_SCREAM; |
906 | ||
a0d0e21e | 907 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 NIS |
908 | SAVEINT(PL_multiline); |
909 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
910 | } |
911 | ||
912 | play_it_again: | |
cf93c79d IZ |
913 | if (global && rx->startp[0] != -1) { |
914 | t = s = rx->endp[0] + truebase; | |
d9f97599 | 915 | if ((s + rx->minlen) > strend) |
a0d0e21e | 916 | goto nope; |
f86702cc | 917 | if (update_minmatch++) |
e60df1fa | 918 | minmatch = had_zerolen; |
a0d0e21e | 919 | } |
f722798b IZ |
920 | if (rx->reganch & RE_USE_INTUIT) { |
921 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); | |
922 | ||
923 | if (!s) | |
924 | goto nope; | |
925 | if ( (rx->reganch & ROPT_CHECK_ALL) | |
926 | && !PL_sawampersand | |
927 | && ((rx->reganch & ROPT_NOSCAN) | |
928 | || !((rx->reganch & RE_INTUIT_TAIL) | |
929 | && (r_flags & REXEC_SCREAM)))) | |
930 | goto yup; | |
a0d0e21e | 931 | } |
cea2e8a9 | 932 | if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 | 933 | { |
3280af22 | 934 | PL_curpm = pm; |
a0d0e21e | 935 | if (pm->op_pmflags & PMf_ONCE) |
48c036b1 | 936 | pm->op_pmdynflags |= PMdf_USED; |
a0d0e21e LW |
937 | goto gotcha; |
938 | } | |
939 | else | |
940 | goto ret_no; | |
941 | /*NOTREACHED*/ | |
942 | ||
943 | gotcha: | |
72311751 GS |
944 | if (rxtainted) |
945 | RX_MATCH_TAINTED_on(rx); | |
946 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e LW |
947 | if (gimme == G_ARRAY) { |
948 | I32 iters, i, len; | |
949 | ||
d9f97599 | 950 | iters = rx->nparens; |
a0d0e21e LW |
951 | if (global && !iters) |
952 | i = 1; | |
953 | else | |
954 | i = 0; | |
c277df42 | 955 | SPAGAIN; /* EVAL blocks could move the stack. */ |
a0d0e21e | 956 | EXTEND(SP, iters + i); |
bbce6d69 | 957 | EXTEND_MORTAL(iters + i); |
a0d0e21e LW |
958 | for (i = !i; i <= iters; i++) { |
959 | PUSHs(sv_newmortal()); | |
960 | /*SUPPRESS 560*/ | |
cf93c79d IZ |
961 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
962 | len = rx->endp[i] - rx->startp[i]; | |
963 | s = rx->startp[i] + truebase; | |
a0d0e21e LW |
964 | sv_setpvn(*SP, s, len); |
965 | } | |
966 | } | |
967 | if (global) { | |
cf93c79d IZ |
968 | had_zerolen = (rx->startp[0] != -1 |
969 | && rx->startp[0] == rx->endp[0]); | |
c277df42 | 970 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 971 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
972 | goto play_it_again; |
973 | } | |
f7e33566 | 974 | else if (!iters) |
bde848c5 | 975 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 976 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
977 | RETURN; |
978 | } | |
979 | else { | |
980 | if (global) { | |
981 | MAGIC* mg = 0; | |
982 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
983 | mg = mg_find(TARG, 'g'); | |
984 | if (!mg) { | |
985 | sv_magic(TARG, (SV*)0, 'g', Nullch, 0); | |
986 | mg = mg_find(TARG, 'g'); | |
987 | } | |
cf93c79d IZ |
988 | if (rx->startp[0] != -1) { |
989 | mg->mg_len = rx->endp[0]; | |
d9f97599 | 990 | if (rx->startp[0] == rx->endp[0]) |
748a9306 LW |
991 | mg->mg_flags |= MGf_MINMATCH; |
992 | else | |
993 | mg->mg_flags &= ~MGf_MINMATCH; | |
994 | } | |
a0d0e21e | 995 | } |
4633a7c4 | 996 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
997 | RETPUSHYES; |
998 | } | |
999 | ||
f722798b | 1000 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1001 | if (rxtainted) |
1002 | RX_MATCH_TAINTED_on(rx); | |
1003 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1004 | PL_curpm = pm; |
a0d0e21e | 1005 | if (pm->op_pmflags & PMf_ONCE) |
48c036b1 | 1006 | pm->op_pmdynflags |= PMdf_USED; |
cf93c79d IZ |
1007 | if (RX_MATCH_COPIED(rx)) |
1008 | Safefree(rx->subbeg); | |
1009 | RX_MATCH_COPIED_off(rx); | |
1010 | rx->subbeg = Nullch; | |
a0d0e21e | 1011 | if (global) { |
d9f97599 | 1012 | rx->subbeg = truebase; |
cf93c79d | 1013 | rx->startp[0] = s - truebase; |
f722798b | 1014 | rx->endp[0] = s - truebase + rx->minlen; |
cf93c79d | 1015 | rx->sublen = strend - truebase; |
a0d0e21e | 1016 | goto gotcha; |
cf93c79d | 1017 | } |
3280af22 | 1018 | if (PL_sawampersand) { |
cf93c79d | 1019 | I32 off; |
a0d0e21e | 1020 | |
cf93c79d IZ |
1021 | rx->subbeg = savepvn(t, strend - t); |
1022 | rx->sublen = strend - t; | |
1023 | RX_MATCH_COPIED_on(rx); | |
1024 | off = rx->startp[0] = s - t; | |
f722798b | 1025 | rx->endp[0] = off + rx->minlen; |
cf93c79d IZ |
1026 | } |
1027 | else { /* startp/endp are used by @- @+. */ | |
1028 | rx->startp[0] = s - truebase; | |
f722798b | 1029 | rx->endp[0] = s - truebase + rx->minlen; |
a0d0e21e | 1030 | } |
4633a7c4 | 1031 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1032 | RETPUSHYES; |
1033 | ||
1034 | nope: | |
a0d0e21e | 1035 | ret_no: |
c90c0ff4 | 1036 | if (global && !(pm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e LW |
1037 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
1038 | MAGIC* mg = mg_find(TARG, 'g'); | |
1039 | if (mg) | |
565764a8 | 1040 | mg->mg_len = -1; |
a0d0e21e LW |
1041 | } |
1042 | } | |
4633a7c4 | 1043 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1044 | if (gimme == G_ARRAY) |
1045 | RETURN; | |
1046 | RETPUSHNO; | |
1047 | } | |
1048 | ||
1049 | OP * | |
864dbfa3 | 1050 | Perl_do_readline(pTHX) |
a0d0e21e LW |
1051 | { |
1052 | dSP; dTARGETSTACKED; | |
1053 | register SV *sv; | |
1054 | STRLEN tmplen = 0; | |
1055 | STRLEN offset; | |
760ac839 | 1056 | PerlIO *fp; |
3280af22 | 1057 | register IO *io = GvIO(PL_last_in_gv); |
533c011a | 1058 | register I32 type = PL_op->op_type; |
54310121 | 1059 | I32 gimme = GIMME_V; |
e79b0511 | 1060 | MAGIC *mg; |
a0d0e21e | 1061 | |
33c27489 | 1062 | if (mg = SvTIED_mg((SV*)PL_last_in_gv, 'q')) { |
e79b0511 | 1063 | PUSHMARK(SP); |
33c27489 | 1064 | XPUSHs(SvTIED_obj((SV*)PL_last_in_gv, mg)); |
e79b0511 | 1065 | PUTBACK; |
1066 | ENTER; | |
864dbfa3 | 1067 | call_method("READLINE", gimme); |
e79b0511 | 1068 | LEAVE; |
1069 | SPAGAIN; | |
54310121 | 1070 | if (gimme == G_SCALAR) |
1071 | SvSetMagicSV_nosteal(TARG, TOPs); | |
e79b0511 | 1072 | RETURN; |
1073 | } | |
a0d0e21e LW |
1074 | fp = Nullfp; |
1075 | if (io) { | |
1076 | fp = IoIFP(io); | |
1077 | if (!fp) { | |
1078 | if (IoFLAGS(io) & IOf_ARGV) { | |
1079 | if (IoFLAGS(io) & IOf_START) { | |
1080 | IoFLAGS(io) &= ~IOf_START; | |
1081 | IoLINES(io) = 0; | |
3280af22 | 1082 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
9d116dd7 | 1083 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 NIS |
1084 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1085 | SvSETMAGIC(GvSV(PL_last_in_gv)); | |
a2008d6d GS |
1086 | fp = IoIFP(io); |
1087 | goto have_fp; | |
a0d0e21e LW |
1088 | } |
1089 | } | |
3280af22 | 1090 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1091 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1092 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1093 | IoFLAGS(io) |= IOf_START; |
1094 | } | |
1095 | } | |
1096 | else if (type == OP_GLOB) { | |
1097 | SV *tmpcmd = NEWSV(55, 0); | |
1098 | SV *tmpglob = POPs; | |
1099 | ENTER; | |
1100 | SAVEFREESV(tmpcmd); | |
1101 | #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */ | |
1102 | /* since spawning off a process is a real performance hit */ | |
1103 | { | |
1104 | #include <descrip.h> | |
1105 | #include <lib$routines.h> | |
1106 | #include <nam.h> | |
1107 | #include <rmsdef.h> | |
1108 | char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'}; | |
1109 | char vmsspec[NAM$C_MAXRSS+1]; | |
1110 | char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp; | |
1111 | char tmpfnam[L_tmpnam] = "SYS$SCRATCH:"; | |
1112 | $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;"); | |
760ac839 | 1113 | PerlIO *tmpfp; |
a0d0e21e LW |
1114 | STRLEN i; |
1115 | struct dsc$descriptor_s wilddsc | |
1116 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
1117 | struct dsc$descriptor_vs rsdsc | |
1118 | = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt}; | |
1119 | unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0; | |
1120 | ||
1121 | /* We could find out if there's an explicit dev/dir or version | |
1122 | by peeking into lib$find_file's internal context at | |
1123 | ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb | |
1124 | but that's unsupported, so I don't want to do it now and | |
1125 | have it bite someone in the future. */ | |
6ad3d225 | 1126 | strcat(tmpfnam,PerlLIO_tmpnam(NULL)); |
a0d0e21e LW |
1127 | cp = SvPV(tmpglob,i); |
1128 | for (; i; i--) { | |
1129 | if (cp[i] == ';') hasver = 1; | |
1130 | if (cp[i] == '.') { | |
1131 | if (sts) hasver = 1; | |
1132 | else sts = 1; | |
1133 | } | |
1134 | if (cp[i] == '/') { | |
1135 | hasdir = isunix = 1; | |
1136 | break; | |
748a9306 | 1137 | } |
a0d0e21e LW |
1138 | if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') { |
1139 | hasdir = 1; | |
1140 | break; | |
1141 | } | |
1142 | } | |
760ac839 | 1143 | if ((tmpfp = PerlIO_open(tmpfnam,"w+","fop=dlt")) != NULL) { |
09b7f37c | 1144 | Stat_t st; |
c6ed36e1 | 1145 | if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode)) |
09b7f37c CB |
1146 | ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL); |
1147 | else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL); | |
a0d0e21e LW |
1148 | if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer); |
1149 | while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt, | |
1150 | &dfltdsc,NULL,NULL,NULL))&1)) { | |
1151 | end = rstr + (unsigned long int) *rslt; | |
1152 | if (!hasver) while (*end != ';') end--; | |
1153 | *(end++) = '\n'; *end = '\0'; | |
1154 | for (cp = rstr; *cp; cp++) *cp = _tolower(*cp); | |
1155 | if (hasdir) { | |
f86702cc | 1156 | if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1); |
a0d0e21e LW |
1157 | begin = rstr; |
1158 | } | |
1159 | else { | |
1160 | begin = end; | |
1161 | while (*(--begin) != ']' && *begin != '>') ; | |
1162 | ++begin; | |
1163 | } | |
760ac839 | 1164 | ok = (PerlIO_puts(tmpfp,begin) != EOF); |
a0d0e21e LW |
1165 | } |
1166 | if (cxt) (void)lib$find_file_end(&cxt); | |
748a9306 LW |
1167 | if (ok && sts != RMS$_NMF && |
1168 | sts != RMS$_DNF && sts != RMS$_FNF) ok = 0; | |
a0d0e21e | 1169 | if (!ok) { |
c07a80fd | 1170 | if (!(sts & 1)) { |
1171 | SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts); | |
1172 | } | |
760ac839 | 1173 | PerlIO_close(tmpfp); |
a0d0e21e LW |
1174 | fp = NULL; |
1175 | } | |
1176 | else { | |
760ac839 | 1177 | PerlIO_rewind(tmpfp); |
a0d0e21e LW |
1178 | IoTYPE(io) = '<'; |
1179 | IoIFP(io) = fp = tmpfp; | |
1e422769 | 1180 | IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */ |
a0d0e21e LW |
1181 | } |
1182 | } | |
1183 | } | |
1184 | #else /* !VMS */ | |
1185 | #ifdef DOSISH | |
67955e0c | 1186 | #ifdef OS2 |
1187 | sv_setpv(tmpcmd, "for a in "); | |
1188 | sv_catsv(tmpcmd, tmpglob); | |
1189 | sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |"); | |
1190 | #else | |
39e571d4 LM |
1191 | #ifdef DJGPP |
1192 | sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */ | |
1193 | sv_catsv(tmpcmd, tmpglob); | |
1194 | #else | |
a0d0e21e LW |
1195 | sv_setpv(tmpcmd, "perlglob "); |
1196 | sv_catsv(tmpcmd, tmpglob); | |
1197 | sv_catpv(tmpcmd, " |"); | |
39e571d4 | 1198 | #endif /* !DJGPP */ |
67955e0c | 1199 | #endif /* !OS2 */ |
1200 | #else /* !DOSISH */ | |
1201 | #if defined(CSH) | |
3280af22 | 1202 | sv_setpvn(tmpcmd, PL_cshname, PL_cshlen); |
a0d0e21e LW |
1203 | sv_catpv(tmpcmd, " -cf 'set nonomatch; glob "); |
1204 | sv_catsv(tmpcmd, tmpglob); | |
16d20bd9 | 1205 | sv_catpv(tmpcmd, "' 2>/dev/null |"); |
a0d0e21e LW |
1206 | #else |
1207 | sv_setpv(tmpcmd, "echo "); | |
1208 | sv_catsv(tmpcmd, tmpglob); | |
1209 | #if 'z' - 'a' == 25 | |
1210 | sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|"); | |
1211 | #else | |
1212 | sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|"); | |
1213 | #endif | |
1214 | #endif /* !CSH */ | |
67955e0c | 1215 | #endif /* !DOSISH */ |
3280af22 | 1216 | (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd), |
9d116dd7 | 1217 | FALSE, O_RDONLY, 0, Nullfp); |
a0d0e21e LW |
1218 | fp = IoIFP(io); |
1219 | #endif /* !VMS */ | |
1220 | LEAVE; | |
1221 | } | |
1222 | } | |
1223 | else if (type == OP_GLOB) | |
1224 | SP--; | |
af8c498a GS |
1225 | else if (ckWARN(WARN_IO) /* stdout/stderr or other write fh */ |
1226 | && (IoTYPE(io) == '>' || fp == PerlIO_stdout() | |
1227 | || fp == PerlIO_stderr())) | |
1228 | { | |
1229 | SV* sv = sv_newmortal(); | |
1230 | gv_efullname3(sv, PL_last_in_gv, Nullch); | |
1231 | Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for output", | |
1232 | SvPV_nolen(sv)); | |
1233 | } | |
a0d0e21e LW |
1234 | } |
1235 | if (!fp) { | |
3f4520fe GS |
1236 | if (ckWARN(WARN_CLOSED) && io && !(IoFLAGS(io) & IOf_START)) { |
1237 | if (type == OP_GLOB) | |
af8c498a GS |
1238 | Perl_warner(aTHX_ WARN_CLOSED, |
1239 | "glob failed (can't start child: %s)", | |
1240 | Strerror(errno)); | |
1241 | else { | |
1242 | SV* sv = sv_newmortal(); | |
1243 | gv_efullname3(sv, PL_last_in_gv, Nullch); | |
1244 | Perl_warner(aTHX_ WARN_CLOSED, | |
1245 | "Read on closed filehandle %s", | |
1246 | SvPV_nolen(sv)); | |
1247 | } | |
3f4520fe | 1248 | } |
54310121 | 1249 | if (gimme == G_SCALAR) { |
a0d0e21e LW |
1250 | (void)SvOK_off(TARG); |
1251 | PUSHTARG; | |
1252 | } | |
1253 | RETURN; | |
1254 | } | |
a2008d6d | 1255 | have_fp: |
54310121 | 1256 | if (gimme == G_SCALAR) { |
a0d0e21e | 1257 | sv = TARG; |
9607fc9c | 1258 | if (SvROK(sv)) |
1259 | sv_unref(sv); | |
a0d0e21e LW |
1260 | (void)SvUPGRADE(sv, SVt_PV); |
1261 | tmplen = SvLEN(sv); /* remember if already alloced */ | |
1262 | if (!tmplen) | |
1263 | Sv_Grow(sv, 80); /* try short-buffering it */ | |
1264 | if (type == OP_RCATLINE) | |
1265 | offset = SvCUR(sv); | |
1266 | else | |
1267 | offset = 0; | |
1268 | } | |
54310121 | 1269 | else { |
1270 | sv = sv_2mortal(NEWSV(57, 80)); | |
1271 | offset = 0; | |
1272 | } | |
fbad3eb5 GS |
1273 | |
1274 | /* flip-flop EOF state for a snarfed empty file */ | |
1275 | #define SNARF_EOF(gimme,rs,io,sv) \ | |
1276 | ((gimme != G_SCALAR || SvCUR(sv) \ | |
1277 | || (IoFLAGS(io) & IOf_NOLINE) || IoLINES(io) || !RsSNARF(rs)) \ | |
1278 | ? ((IoFLAGS(io) &= ~IOf_NOLINE), TRUE) \ | |
1279 | : ((IoFLAGS(io) |= IOf_NOLINE), FALSE)) | |
1280 | ||
a0d0e21e | 1281 | for (;;) { |
fbad3eb5 GS |
1282 | if (!sv_gets(sv, fp, offset) |
1283 | && (type == OP_GLOB || SNARF_EOF(gimme, PL_rs, io, sv))) | |
1284 | { | |
760ac839 | 1285 | PerlIO_clearerr(fp); |
a0d0e21e | 1286 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1287 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1288 | if (fp) |
1289 | continue; | |
3280af22 | 1290 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1291 | IoFLAGS(io) |= IOf_START; |
1292 | } | |
1293 | else if (type == OP_GLOB) { | |
4eb79ab5 | 1294 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_CLOSED)) { |
cea2e8a9 | 1295 | Perl_warner(aTHX_ WARN_CLOSED, |
4eb79ab5 GS |
1296 | "glob failed (child exited with status %d%s)", |
1297 | STATUS_CURRENT >> 8, | |
cf494569 | 1298 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 | 1299 | } |
a0d0e21e | 1300 | } |
54310121 | 1301 | if (gimme == G_SCALAR) { |
a0d0e21e LW |
1302 | (void)SvOK_off(TARG); |
1303 | PUSHTARG; | |
1304 | } | |
1305 | RETURN; | |
1306 | } | |
bbce6d69 | 1307 | /* This should not be marked tainted if the fp is marked clean */ |
1308 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { | |
1309 | TAINT; | |
1310 | SvTAINTED_on(sv); | |
1311 | } | |
a0d0e21e | 1312 | IoLINES(io)++; |
71be2cbc | 1313 | SvSETMAGIC(sv); |
a0d0e21e | 1314 | XPUSHs(sv); |
a0d0e21e LW |
1315 | if (type == OP_GLOB) { |
1316 | char *tmps; | |
1317 | ||
3280af22 | 1318 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd | 1319 | tmps = SvEND(sv) - 1; |
3280af22 | 1320 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd | 1321 | *tmps = '\0'; |
1322 | SvCUR(sv)--; | |
1323 | } | |
1324 | } | |
a0d0e21e LW |
1325 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1326 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && | |
1327 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) | |
1328 | break; | |
43384a1a | 1329 | if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1330 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1331 | continue; | |
1332 | } | |
1333 | } | |
54310121 | 1334 | if (gimme == G_ARRAY) { |
a0d0e21e LW |
1335 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1336 | SvLEN_set(sv, SvCUR(sv)+1); | |
1337 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1338 | } | |
1339 | sv = sv_2mortal(NEWSV(58, 80)); | |
1340 | continue; | |
1341 | } | |
54310121 | 1342 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e LW |
1343 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1344 | if (SvCUR(sv) < 60) | |
1345 | SvLEN_set(sv, 80); | |
1346 | else | |
1347 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ | |
1348 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1349 | } | |
1350 | RETURN; | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | PP(pp_enter) | |
1355 | { | |
4e35701f | 1356 | djSP; |
c09156bb | 1357 | register PERL_CONTEXT *cx; |
533c011a | 1358 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e | 1359 | |
54310121 | 1360 | if (gimme == -1) { |
1361 | if (cxstack_ix >= 0) | |
1362 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1363 | else | |
1364 | gimme = G_SCALAR; | |
1365 | } | |
a0d0e21e LW |
1366 | |
1367 | ENTER; | |
1368 | ||
1369 | SAVETMPS; | |
924508f0 | 1370 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
1371 | |
1372 | RETURN; | |
1373 | } | |
1374 | ||
1375 | PP(pp_helem) | |
1376 | { | |
4e35701f | 1377 | djSP; |
760ac839 | 1378 | HE* he; |
ae77835f | 1379 | SV **svp; |
a0d0e21e | 1380 | SV *keysv = POPs; |
a0d0e21e | 1381 | HV *hv = (HV*)POPs; |
533c011a NIS |
1382 | U32 lval = PL_op->op_flags & OPf_MOD; |
1383 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
be6c24e0 | 1384 | SV *sv; |
a0d0e21e | 1385 | |
ae77835f MB |
1386 | if (SvTYPE(hv) == SVt_PVHV) { |
1387 | he = hv_fetch_ent(hv, keysv, lval && !defer, 0); | |
97fcbf96 | 1388 | svp = he ? &HeVAL(he) : 0; |
ae77835f MB |
1389 | } |
1390 | else if (SvTYPE(hv) == SVt_PVAV) { | |
0ebe0038 | 1391 | if (PL_op->op_private & OPpLVAL_INTRO) |
cea2e8a9 | 1392 | DIE(aTHX_ "Can't localize pseudo-hash element"); |
97fcbf96 | 1393 | svp = avhv_fetch_ent((AV*)hv, keysv, lval && !defer, 0); |
ae77835f | 1394 | } |
c750a3ec | 1395 | else { |
a0d0e21e | 1396 | RETPUSHUNDEF; |
c750a3ec | 1397 | } |
a0d0e21e | 1398 | if (lval) { |
3280af22 | 1399 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 1400 | SV* lv; |
1401 | SV* key2; | |
2d8e6c8d GS |
1402 | if (!defer) { |
1403 | STRLEN n_a; | |
cea2e8a9 | 1404 | DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); |
2d8e6c8d | 1405 | } |
68dc0745 | 1406 | lv = sv_newmortal(); |
1407 | sv_upgrade(lv, SVt_PVLV); | |
1408 | LvTYPE(lv) = 'y'; | |
1409 | sv_magic(lv, key2 = newSVsv(keysv), 'y', Nullch, 0); | |
1410 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ | |
1411 | LvTARG(lv) = SvREFCNT_inc(hv); | |
1412 | LvTARGLEN(lv) = 1; | |
1413 | PUSHs(lv); | |
1414 | RETURN; | |
1415 | } | |
533c011a | 1416 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f | 1417 | if (HvNAME(hv) && isGV(*svp)) |
533c011a | 1418 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
5f05dabc | 1419 | else |
161b7d16 | 1420 | save_helem(hv, keysv, svp); |
5f05dabc | 1421 | } |
533c011a NIS |
1422 | else if (PL_op->op_private & OPpDEREF) |
1423 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 1424 | } |
3280af22 | 1425 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
1426 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1427 | * Pushing the magical RHS on to the stack is useless, since | |
1428 | * that magic is soon destined to be misled by the local(), | |
1429 | * and thus the later pp_sassign() will fail to mg_get() the | |
1430 | * old value. This should also cure problems with delayed | |
1431 | * mg_get()s. GSAR 98-07-03 */ | |
1432 | if (!lval && SvGMAGICAL(sv)) | |
1433 | sv = sv_mortalcopy(sv); | |
1434 | PUSHs(sv); | |
a0d0e21e LW |
1435 | RETURN; |
1436 | } | |
1437 | ||
1438 | PP(pp_leave) | |
1439 | { | |
4e35701f | 1440 | djSP; |
c09156bb | 1441 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
1442 | register SV **mark; |
1443 | SV **newsp; | |
1444 | PMOP *newpm; | |
1445 | I32 gimme; | |
1446 | ||
533c011a | 1447 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1448 | cx = &cxstack[cxstack_ix]; |
3280af22 | 1449 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e LW |
1450 | } |
1451 | ||
1452 | POPBLOCK(cx,newpm); | |
1453 | ||
533c011a | 1454 | gimme = OP_GIMME(PL_op, -1); |
54310121 | 1455 | if (gimme == -1) { |
1456 | if (cxstack_ix >= 0) | |
1457 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1458 | else | |
1459 | gimme = G_SCALAR; | |
1460 | } | |
a0d0e21e | 1461 | |
a1f49e72 | 1462 | TAINT_NOT; |
54310121 | 1463 | if (gimme == G_VOID) |
1464 | SP = newsp; | |
1465 | else if (gimme == G_SCALAR) { | |
1466 | MARK = newsp + 1; | |
1467 | if (MARK <= SP) | |
1468 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) | |
1469 | *MARK = TOPs; | |
1470 | else | |
1471 | *MARK = sv_mortalcopy(TOPs); | |
a0d0e21e | 1472 | else { |
54310121 | 1473 | MEXTEND(mark,0); |
3280af22 | 1474 | *MARK = &PL_sv_undef; |
a0d0e21e | 1475 | } |
54310121 | 1476 | SP = MARK; |
a0d0e21e | 1477 | } |
54310121 | 1478 | else if (gimme == G_ARRAY) { |
a1f49e72 CS |
1479 | /* in case LEAVE wipes old return values */ |
1480 | for (mark = newsp + 1; mark <= SP; mark++) { | |
1481 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
a0d0e21e | 1482 | *mark = sv_mortalcopy(*mark); |
a1f49e72 CS |
1483 | TAINT_NOT; /* Each item is independent */ |
1484 | } | |
1485 | } | |
a0d0e21e | 1486 | } |
3280af22 | 1487 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e LW |
1488 | |
1489 | LEAVE; | |
1490 | ||
1491 | RETURN; | |
1492 | } | |
1493 | ||
1494 | PP(pp_iter) | |
1495 | { | |
4e35701f | 1496 | djSP; |
c09156bb | 1497 | register PERL_CONTEXT *cx; |
5f05dabc | 1498 | SV* sv; |
4633a7c4 | 1499 | AV* av; |
a0d0e21e | 1500 | |
924508f0 | 1501 | EXTEND(SP, 1); |
a0d0e21e | 1502 | cx = &cxstack[cxstack_ix]; |
6b35e009 | 1503 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 | 1504 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1505 | |
4633a7c4 | 1506 | av = cx->blk_loop.iterary; |
89ea2908 GA |
1507 | if (SvTYPE(av) != SVt_PVAV) { |
1508 | /* iterate ($min .. $max) */ | |
1509 | if (cx->blk_loop.iterlval) { | |
1510 | /* string increment */ | |
1511 | register SV* cur = cx->blk_loop.iterlval; | |
1512 | STRLEN maxlen; | |
1513 | char *max = SvPV((SV*)av, maxlen); | |
1514 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { | |
eaa5c2d6 | 1515 | #ifndef USE_THREADS /* don't risk potential race */ |
39ca2bb7 SM |
1516 | if (SvREFCNT(*cx->blk_loop.itervar) == 1 |
1517 | && !SvMAGICAL(*cx->blk_loop.itervar)) | |
1518 | { | |
eaa5c2d6 GA |
1519 | /* safe to reuse old SV */ |
1520 | sv_setsv(*cx->blk_loop.itervar, cur); | |
1521 | } | |
1522 | else | |
1523 | #endif | |
1524 | { | |
1525 | /* we need a fresh SV every time so that loop body sees a | |
1526 | * completely new SV for closures/references to work as | |
1527 | * they used to */ | |
1528 | SvREFCNT_dec(*cx->blk_loop.itervar); | |
1529 | *cx->blk_loop.itervar = newSVsv(cur); | |
1530 | } | |
89ea2908 GA |
1531 | if (strEQ(SvPVX(cur), max)) |
1532 | sv_setiv(cur, 0); /* terminate next time */ | |
1533 | else | |
1534 | sv_inc(cur); | |
1535 | RETPUSHYES; | |
1536 | } | |
1537 | RETPUSHNO; | |
1538 | } | |
1539 | /* integer increment */ | |
1540 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) | |
1541 | RETPUSHNO; | |
7f61b687 | 1542 | |
eaa5c2d6 | 1543 | #ifndef USE_THREADS /* don't risk potential race */ |
39ca2bb7 SM |
1544 | if (SvREFCNT(*cx->blk_loop.itervar) == 1 |
1545 | && !SvMAGICAL(*cx->blk_loop.itervar)) | |
1546 | { | |
eaa5c2d6 GA |
1547 | /* safe to reuse old SV */ |
1548 | sv_setiv(*cx->blk_loop.itervar, cx->blk_loop.iterix++); | |
1549 | } | |
1550 | else | |
1551 | #endif | |
1552 | { | |
1553 | /* we need a fresh SV every time so that loop body sees a | |
1554 | * completely new SV for closures/references to work as they | |
1555 | * used to */ | |
1556 | SvREFCNT_dec(*cx->blk_loop.itervar); | |
1557 | *cx->blk_loop.itervar = newSViv(cx->blk_loop.iterix++); | |
1558 | } | |
89ea2908 GA |
1559 | RETPUSHYES; |
1560 | } | |
1561 | ||
1562 | /* iterate array */ | |
3280af22 | 1563 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) |
4633a7c4 | 1564 | RETPUSHNO; |
a0d0e21e | 1565 | |
7a4c00b4 | 1566 | SvREFCNT_dec(*cx->blk_loop.itervar); |
a0d0e21e | 1567 | |
93965878 NIS |
1568 | if (sv = (SvMAGICAL(av)) |
1569 | ? *av_fetch(av, ++cx->blk_loop.iterix, FALSE) | |
1570 | : AvARRAY(av)[++cx->blk_loop.iterix]) | |
a0d0e21e | 1571 | SvTEMP_off(sv); |
a0d0e21e | 1572 | else |
3280af22 NIS |
1573 | sv = &PL_sv_undef; |
1574 | if (av != PL_curstack && SvIMMORTAL(sv)) { | |
5f05dabc | 1575 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc | 1576 | if (lv && SvREFCNT(lv) > 1) { |
1577 | SvREFCNT_dec(lv); | |
1578 | lv = Nullsv; | |
1579 | } | |
5f05dabc | 1580 | if (lv) |
1581 | SvREFCNT_dec(LvTARG(lv)); | |
1582 | else { | |
68dc0745 | 1583 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc | 1584 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc | 1585 | LvTYPE(lv) = 'y'; |
68dc0745 | 1586 | sv_magic(lv, Nullsv, 'y', Nullch, 0); |
5f05dabc | 1587 | } |
1588 | LvTARG(lv) = SvREFCNT_inc(av); | |
1589 | LvTARGOFF(lv) = cx->blk_loop.iterix; | |
8ac85365 | 1590 | LvTARGLEN(lv) = (UV) -1; |
5f05dabc | 1591 | sv = (SV*)lv; |
1592 | } | |
a0d0e21e | 1593 | |
7a4c00b4 | 1594 | *cx->blk_loop.itervar = SvREFCNT_inc(sv); |
a0d0e21e LW |
1595 | RETPUSHYES; |
1596 | } | |
1597 | ||
1598 | PP(pp_subst) | |
1599 | { | |
4e35701f | 1600 | djSP; dTARG; |
a0d0e21e LW |
1601 | register PMOP *pm = cPMOP; |
1602 | PMOP *rpm = pm; | |
1603 | register SV *dstr; | |
1604 | register char *s; | |
1605 | char *strend; | |
1606 | register char *m; | |
1607 | char *c; | |
1608 | register char *d; | |
1609 | STRLEN clen; | |
1610 | I32 iters = 0; | |
1611 | I32 maxiters; | |
1612 | register I32 i; | |
1613 | bool once; | |
71be2cbc | 1614 | bool rxtainted; |
a0d0e21e | 1615 | char *orig; |
22e551b9 | 1616 | I32 r_flags; |
d9f97599 | 1617 | register REGEXP *rx = pm->op_pmregexp; |
a0d0e21e LW |
1618 | STRLEN len; |
1619 | int force_on_match = 0; | |
3280af22 | 1620 | I32 oldsave = PL_savestack_ix; |
c277df42 | 1621 | I32 update_minmatch = 1; |
a0d0e21e | 1622 | |
5cd24f17 | 1623 | /* known replacement string? */ |
1624 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; | |
533c011a | 1625 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
1626 | TARG = POPs; |
1627 | else { | |
54b9620d | 1628 | TARG = DEFSV; |
a0d0e21e | 1629 | EXTEND(SP,1); |
8ec5e241 | 1630 | } |
68dc0745 | 1631 | if (SvREADONLY(TARG) |
1632 | || (SvTYPE(TARG) > SVt_PVLV | |
1633 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG)))) | |
cea2e8a9 | 1634 | Perl_croak(aTHX_ PL_no_modify); |
8ec5e241 NIS |
1635 | PUTBACK; |
1636 | ||
a0d0e21e | 1637 | s = SvPV(TARG, len); |
68dc0745 | 1638 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 1639 | force_on_match = 1; |
b3eb6a9b | 1640 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 NIS |
1641 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
1642 | if (PL_tainted) | |
b3eb6a9b | 1643 | rxtainted |= 2; |
9212bbba | 1644 | TAINT_NOT; |
a0d0e21e LW |
1645 | |
1646 | force_it: | |
1647 | if (!pm || !s) | |
cea2e8a9 | 1648 | DIE(aTHX_ "panic: do_subst"); |
a0d0e21e LW |
1649 | |
1650 | strend = s + len; | |
2beec16e IZ |
1651 | maxiters = 2*(strend - s) + 10; /* We can match twice at each |
1652 | position, once with zero-length, | |
1653 | second time with non-zero. */ | |
a0d0e21e | 1654 | |
3280af22 NIS |
1655 | if (!rx->prelen && PL_curpm) { |
1656 | pm = PL_curpm; | |
d9f97599 | 1657 | rx = pm->op_pmregexp; |
a0d0e21e | 1658 | } |
22e551b9 | 1659 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
9d080a66 | 1660 | ? REXEC_COPY_STR : 0; |
f722798b | 1661 | if (SvSCREAM(TARG)) |
22e551b9 | 1662 | r_flags |= REXEC_SCREAM; |
a0d0e21e | 1663 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 NIS |
1664 | SAVEINT(PL_multiline); |
1665 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
1666 | } |
1667 | orig = m = s; | |
f722798b IZ |
1668 | if (rx->reganch & RE_USE_INTUIT) { |
1669 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); | |
1670 | ||
1671 | if (!s) | |
1672 | goto nope; | |
1673 | /* How to do it in subst? */ | |
1674 | /* if ( (rx->reganch & ROPT_CHECK_ALL) | |
1675 | && !PL_sawampersand | |
1676 | && ((rx->reganch & ROPT_NOSCAN) | |
1677 | || !((rx->reganch & RE_INTUIT_TAIL) | |
1678 | && (r_flags & REXEC_SCREAM)))) | |
1679 | goto yup; | |
1680 | */ | |
a0d0e21e | 1681 | } |
71be2cbc | 1682 | |
1683 | /* only replace once? */ | |
a0d0e21e | 1684 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc | 1685 | |
1686 | /* known replacement string? */ | |
5cd24f17 | 1687 | c = dstr ? SvPV(dstr, clen) : Nullch; |
71be2cbc | 1688 | |
1689 | /* can do inplace substitution? */ | |
22e551b9 | 1690 | if (c && clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) |
d9f97599 | 1691 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN)) { |
f722798b IZ |
1692 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
1693 | r_flags | REXEC_CHECKED)) | |
1694 | { | |
8ec5e241 | 1695 | SPAGAIN; |
3280af22 | 1696 | PUSHs(&PL_sv_no); |
71be2cbc | 1697 | LEAVE_SCOPE(oldsave); |
1698 | RETURN; | |
1699 | } | |
1700 | if (force_on_match) { | |
1701 | force_on_match = 0; | |
1702 | s = SvPV_force(TARG, len); | |
1703 | goto force_it; | |
1704 | } | |
71be2cbc | 1705 | d = s; |
3280af22 | 1706 | PL_curpm = pm; |
71be2cbc | 1707 | SvSCREAM_off(TARG); /* disable possible screamer */ |
1708 | if (once) { | |
48c036b1 | 1709 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d IZ |
1710 | m = orig + rx->startp[0]; |
1711 | d = orig + rx->endp[0]; | |
71be2cbc | 1712 | s = orig; |
1713 | if (m - s > strend - d) { /* faster to shorten from end */ | |
1714 | if (clen) { | |
1715 | Copy(c, m, clen, char); | |
1716 | m += clen; | |
a0d0e21e | 1717 | } |
71be2cbc | 1718 | i = strend - d; |
1719 | if (i > 0) { | |
1720 | Move(d, m, i, char); | |
1721 | m += i; | |
a0d0e21e | 1722 | } |
71be2cbc | 1723 | *m = '\0'; |
1724 | SvCUR_set(TARG, m - s); | |
1725 | } | |
1726 | /*SUPPRESS 560*/ | |
1727 | else if (i = m - s) { /* faster from front */ | |
1728 | d -= clen; | |
1729 | m = d; | |
1730 | sv_chop(TARG, d-i); | |
1731 | s += i; | |
1732 | while (i--) | |
1733 | *--d = *--s; | |
1734 | if (clen) | |
1735 | Copy(c, m, clen, char); | |
1736 | } | |
1737 | else if (clen) { | |
1738 | d -= clen; | |
1739 | sv_chop(TARG, d); | |
1740 | Copy(c, d, clen, char); | |
1741 | } | |
1742 | else { | |
1743 | sv_chop(TARG, d); | |
1744 | } | |
48c036b1 | 1745 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 1746 | SPAGAIN; |
3280af22 | 1747 | PUSHs(&PL_sv_yes); |
71be2cbc | 1748 | } |
1749 | else { | |
71be2cbc | 1750 | do { |
1751 | if (iters++ > maxiters) | |
cea2e8a9 | 1752 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 1753 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 1754 | m = rx->startp[0] + orig; |
71be2cbc | 1755 | /*SUPPRESS 560*/ |
1756 | if (i = m - s) { | |
1757 | if (s != d) | |
1758 | Move(s, d, i, char); | |
1759 | d += i; | |
a0d0e21e | 1760 | } |
71be2cbc | 1761 | if (clen) { |
1762 | Copy(c, d, clen, char); | |
1763 | d += clen; | |
1764 | } | |
cf93c79d | 1765 | s = rx->endp[0] + orig; |
cea2e8a9 | 1766 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b IZ |
1767 | TARG, NULL, |
1768 | /* don't match same null twice */ | |
1769 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 1770 | if (s != d) { |
1771 | i = strend - s; | |
1772 | SvCUR_set(TARG, d - SvPVX(TARG) + i); | |
1773 | Move(s, d, i+1, char); /* include the NUL */ | |
a0d0e21e | 1774 | } |
48c036b1 | 1775 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 1776 | SPAGAIN; |
71be2cbc | 1777 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e | 1778 | } |
71be2cbc | 1779 | (void)SvPOK_only(TARG); |
48c036b1 | 1780 | TAINT_IF(rxtainted); |
8ec5e241 NIS |
1781 | if (SvSMAGICAL(TARG)) { |
1782 | PUTBACK; | |
1783 | mg_set(TARG); | |
1784 | SPAGAIN; | |
1785 | } | |
9212bbba | 1786 | SvTAINT(TARG); |
71be2cbc | 1787 | LEAVE_SCOPE(oldsave); |
1788 | RETURN; | |
a0d0e21e | 1789 | } |
71be2cbc | 1790 | |
f722798b IZ |
1791 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
1792 | r_flags | REXEC_CHECKED)) | |
1793 | { | |
a0d0e21e LW |
1794 | if (force_on_match) { |
1795 | force_on_match = 0; | |
1796 | s = SvPV_force(TARG, len); | |
1797 | goto force_it; | |
1798 | } | |
48c036b1 | 1799 | rxtainted |= RX_MATCH_TAINTED(rx); |
8ec5e241 | 1800 | dstr = NEWSV(25, len); |
a0d0e21e | 1801 | sv_setpvn(dstr, m, s-m); |
3280af22 | 1802 | PL_curpm = pm; |
a0d0e21e | 1803 | if (!c) { |
c09156bb | 1804 | register PERL_CONTEXT *cx; |
8ec5e241 | 1805 | SPAGAIN; |
a0d0e21e LW |
1806 | PUSHSUBST(cx); |
1807 | RETURNOP(cPMOP->op_pmreplroot); | |
1808 | } | |
cf93c79d | 1809 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1810 | do { |
1811 | if (iters++ > maxiters) | |
cea2e8a9 | 1812 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 1813 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 1814 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e LW |
1815 | m = s; |
1816 | s = orig; | |
cf93c79d | 1817 | orig = rx->subbeg; |
a0d0e21e LW |
1818 | s = orig + (m - s); |
1819 | strend = s + (strend - m); | |
1820 | } | |
cf93c79d | 1821 | m = rx->startp[0] + orig; |
a0d0e21e | 1822 | sv_catpvn(dstr, s, m-s); |
cf93c79d | 1823 | s = rx->endp[0] + orig; |
a0d0e21e LW |
1824 | if (clen) |
1825 | sv_catpvn(dstr, c, clen); | |
1826 | if (once) | |
1827 | break; | |
cea2e8a9 | 1828 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, TARG, NULL, r_flags)); |
a0d0e21e | 1829 | sv_catpvn(dstr, s, strend - s); |
748a9306 | 1830 | |
4633a7c4 | 1831 | (void)SvOOK_off(TARG); |
cb0b1708 | 1832 | Safefree(SvPVX(TARG)); |
748a9306 LW |
1833 | SvPVX(TARG) = SvPVX(dstr); |
1834 | SvCUR_set(TARG, SvCUR(dstr)); | |
1835 | SvLEN_set(TARG, SvLEN(dstr)); | |
1836 | SvPVX(dstr) = 0; | |
1837 | sv_free(dstr); | |
1838 | ||
48c036b1 | 1839 | TAINT_IF(rxtainted & 1); |
f878fbec | 1840 | SPAGAIN; |
48c036b1 GS |
1841 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
1842 | ||
a0d0e21e | 1843 | (void)SvPOK_only(TARG); |
48c036b1 | 1844 | TAINT_IF(rxtainted); |
a0d0e21e | 1845 | SvSETMAGIC(TARG); |
9212bbba | 1846 | SvTAINT(TARG); |
4633a7c4 | 1847 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1848 | RETURN; |
1849 | } | |
5cd24f17 | 1850 | goto ret_no; |
a0d0e21e LW |
1851 | |
1852 | nope: | |
8ec5e241 NIS |
1853 | ret_no: |
1854 | SPAGAIN; | |
3280af22 | 1855 | PUSHs(&PL_sv_no); |
4633a7c4 | 1856 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1857 | RETURN; |
1858 | } | |
1859 | ||
1860 | PP(pp_grepwhile) | |
1861 | { | |
4e35701f | 1862 | djSP; |
a0d0e21e LW |
1863 | |
1864 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
1865 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
1866 | ++*PL_markstack_ptr; | |
a0d0e21e LW |
1867 | LEAVE; /* exit inner scope */ |
1868 | ||
1869 | /* All done yet? */ | |
3280af22 | 1870 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 1871 | I32 items; |
54310121 | 1872 | I32 gimme = GIMME_V; |
a0d0e21e LW |
1873 | |
1874 | LEAVE; /* exit outer scope */ | |
1875 | (void)POPMARK; /* pop src */ | |
3280af22 | 1876 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 1877 | (void)POPMARK; /* pop dst */ |
3280af22 | 1878 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 1879 | if (gimme == G_SCALAR) { |
a0d0e21e LW |
1880 | dTARGET; |
1881 | XPUSHi(items); | |
a0d0e21e | 1882 | } |
54310121 | 1883 | else if (gimme == G_ARRAY) |
1884 | SP += items; | |
a0d0e21e LW |
1885 | RETURN; |
1886 | } | |
1887 | else { | |
1888 | SV *src; | |
1889 | ||
1890 | ENTER; /* enter inner scope */ | |
3280af22 | 1891 | SAVESPTR(PL_curpm); |
a0d0e21e | 1892 | |
3280af22 | 1893 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 1894 | SvTEMP_off(src); |
54b9620d | 1895 | DEFSV = src; |
a0d0e21e LW |
1896 | |
1897 | RETURNOP(cLOGOP->op_other); | |
1898 | } | |
1899 | } | |
1900 | ||
1901 | PP(pp_leavesub) | |
1902 | { | |
4e35701f | 1903 | djSP; |
a0d0e21e LW |
1904 | SV **mark; |
1905 | SV **newsp; | |
1906 | PMOP *newpm; | |
1907 | I32 gimme; | |
c09156bb | 1908 | register PERL_CONTEXT *cx; |
f86702cc | 1909 | struct block_sub cxsub; |
a0d0e21e LW |
1910 | |
1911 | POPBLOCK(cx,newpm); | |
f86702cc | 1912 | POPSUB1(cx); /* Delay POPSUB2 until stack values are safe */ |
1913 | ||
a1f49e72 | 1914 | TAINT_NOT; |
a0d0e21e LW |
1915 | if (gimme == G_SCALAR) { |
1916 | MARK = newsp + 1; | |
a29cdaf0 IZ |
1917 | if (MARK <= SP) { |
1918 | if (cxsub.cv && CvDEPTH(cxsub.cv) > 1) { | |
1919 | if (SvTEMP(TOPs)) { | |
1920 | *MARK = SvREFCNT_inc(TOPs); | |
1921 | FREETMPS; | |
1922 | sv_2mortal(*MARK); | |
1923 | } else { | |
1924 | FREETMPS; | |
1925 | *MARK = sv_mortalcopy(TOPs); | |
1926 | } | |
1927 | } else | |
1928 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
1929 | } else { | |
f86702cc | 1930 | MEXTEND(MARK, 0); |
3280af22 | 1931 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
1932 | } |
1933 | SP = MARK; | |
1934 | } | |
54310121 | 1935 | else if (gimme == G_ARRAY) { |
f86702cc | 1936 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 | 1937 | if (!SvTEMP(*MARK)) { |
f86702cc | 1938 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
1939 | TAINT_NOT; /* Each item is independent */ |
1940 | } | |
f86702cc | 1941 | } |
a0d0e21e | 1942 | } |
f86702cc | 1943 | PUTBACK; |
1944 | ||
1945 | POPSUB2(); /* Stack values are safe: release CV and @_ ... */ | |
3280af22 | 1946 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e LW |
1947 | |
1948 | LEAVE; | |
a0d0e21e LW |
1949 | return pop_return(); |
1950 | } | |
1951 | ||
76e3520e | 1952 | STATIC CV * |
cea2e8a9 | 1953 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 MB |
1954 | { |
1955 | dTHR; | |
3280af22 | 1956 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 GS |
1957 | |
1958 | if (!PERLDB_SUB_NN) { | |
1959 | GV *gv = CvGV(cv); | |
1960 | ||
1961 | save_item(dbsv); | |
1962 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) | |
1963 | || strEQ(GvNAME(gv), "END") | |
1964 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ | |
1965 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) | |
1966 | && (gv = (GV*)*svp) ))) { | |
1967 | /* Use GV from the stack as a fallback. */ | |
1968 | /* GV is potentially non-unique, or contain different CV. */ | |
1969 | sv_setsv(dbsv, newRV((SV*)cv)); | |
1970 | } | |
1971 | else { | |
1972 | gv_efullname3(dbsv, gv, Nullch); | |
1973 | } | |
3de9ffa1 MB |
1974 | } |
1975 | else { | |
491527d0 GS |
1976 | SvUPGRADE(dbsv, SVt_PVIV); |
1977 | SvIOK_on(dbsv); | |
1978 | SAVEIV(SvIVX(dbsv)); | |
1979 | SvIVX(dbsv) = (IV)cv; /* Do it the quickest way */ | |
3de9ffa1 | 1980 | } |
491527d0 | 1981 | |
3de9ffa1 | 1982 | if (CvXSUB(cv)) |
3280af22 NIS |
1983 | PL_curcopdb = PL_curcop; |
1984 | cv = GvCV(PL_DBsub); | |
3de9ffa1 MB |
1985 | return cv; |
1986 | } | |
1987 | ||
a0d0e21e LW |
1988 | PP(pp_entersub) |
1989 | { | |
4e35701f | 1990 | djSP; dPOPss; |
a0d0e21e LW |
1991 | GV *gv; |
1992 | HV *stash; | |
1993 | register CV *cv; | |
c09156bb | 1994 | register PERL_CONTEXT *cx; |
5d94fbed | 1995 | I32 gimme; |
533c011a | 1996 | bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
1997 | |
1998 | if (!sv) | |
cea2e8a9 | 1999 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e LW |
2000 | switch (SvTYPE(sv)) { |
2001 | default: | |
2002 | if (!SvROK(sv)) { | |
748a9306 | 2003 | char *sym; |
2d8e6c8d | 2004 | STRLEN n_a; |
748a9306 | 2005 | |
3280af22 | 2006 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a | 2007 | if (hasargs) |
3280af22 | 2008 | SP = PL_stack_base + POPMARK; |
a0d0e21e | 2009 | RETURN; |
fb73857a | 2010 | } |
15ff848f CS |
2011 | if (SvGMAGICAL(sv)) { |
2012 | mg_get(sv); | |
2013 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; | |
2014 | } | |
2015 | else | |
2d8e6c8d | 2016 | sym = SvPV(sv, n_a); |
15ff848f | 2017 | if (!sym) |
cea2e8a9 | 2018 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2019 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 | 2020 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 | 2021 | cv = get_cv(sym, TRUE); |
a0d0e21e LW |
2022 | break; |
2023 | } | |
f5284f61 IZ |
2024 | { |
2025 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ | |
2026 | tryAMAGICunDEREF(to_cv); | |
2027 | } | |
a0d0e21e LW |
2028 | cv = (CV*)SvRV(sv); |
2029 | if (SvTYPE(cv) == SVt_PVCV) | |
2030 | break; | |
2031 | /* FALL THROUGH */ | |
2032 | case SVt_PVHV: | |
2033 | case SVt_PVAV: | |
cea2e8a9 | 2034 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e LW |
2035 | case SVt_PVCV: |
2036 | cv = (CV*)sv; | |
2037 | break; | |
2038 | case SVt_PVGV: | |
8ebc5c01 | 2039 | if (!(cv = GvCVu((GV*)sv))) |
f6ec51f7 GS |
2040 | cv = sv_2cv(sv, &stash, &gv, FALSE); |
2041 | if (!cv) { | |
2042 | ENTER; | |
2043 | SAVETMPS; | |
2044 | goto try_autoload; | |
2045 | } | |
2046 | break; | |
a0d0e21e LW |
2047 | } |
2048 | ||
2049 | ENTER; | |
2050 | SAVETMPS; | |
2051 | ||
2052 | retry: | |
a0d0e21e | 2053 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
44a8e56a | 2054 | GV* autogv; |
22239a37 | 2055 | SV* sub_name; |
44a8e56a | 2056 | |
2057 | /* anonymous or undef'd function leaves us no recourse */ | |
2058 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
cea2e8a9 | 2059 | DIE(aTHX_ "Undefined subroutine called"); |
67caa1fe | 2060 | |
44a8e56a | 2061 | /* autoloaded stub? */ |
2062 | if (cv != GvCV(gv)) { | |
2063 | cv = GvCV(gv); | |
a0d0e21e | 2064 | } |
44a8e56a | 2065 | /* should call AUTOLOAD now? */ |
67caa1fe | 2066 | else { |
f6ec51f7 GS |
2067 | try_autoload: |
2068 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), | |
2069 | FALSE))) | |
2070 | { | |
2071 | cv = GvCV(autogv); | |
2072 | } | |
2073 | /* sorry */ | |
2074 | else { | |
2075 | sub_name = sv_newmortal(); | |
2076 | gv_efullname3(sub_name, gv, Nullch); | |
cea2e8a9 | 2077 | DIE(aTHX_ "Undefined subroutine &%s called", SvPVX(sub_name)); |
f6ec51f7 | 2078 | } |
67caa1fe GS |
2079 | } |
2080 | if (!cv) | |
cea2e8a9 | 2081 | DIE(aTHX_ "Not a CODE reference"); |
67caa1fe | 2082 | goto retry; |
a0d0e21e LW |
2083 | } |
2084 | ||
54310121 | 2085 | gimme = GIMME_V; |
67caa1fe | 2086 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
4f01c5a5 | 2087 | cv = get_db_sub(&sv, cv); |
67caa1fe | 2088 | if (!cv) |
cea2e8a9 | 2089 | DIE(aTHX_ "No DBsub routine"); |
67caa1fe | 2090 | } |
a0d0e21e | 2091 | |
11343788 | 2092 | #ifdef USE_THREADS |
3de9ffa1 MB |
2093 | /* |
2094 | * First we need to check if the sub or method requires locking. | |
458fb581 MB |
2095 | * If so, we gain a lock on the CV, the first argument or the |
2096 | * stash (for static methods), as appropriate. This has to be | |
2097 | * inline because for FAKE_THREADS, COND_WAIT inlines code to | |
2098 | * reschedule by returning a new op. | |
3de9ffa1 | 2099 | */ |
11343788 | 2100 | MUTEX_LOCK(CvMUTEXP(cv)); |
77a005ab MB |
2101 | if (CvFLAGS(cv) & CVf_LOCKED) { |
2102 | MAGIC *mg; | |
2103 | if (CvFLAGS(cv) & CVf_METHOD) { | |
533c011a NIS |
2104 | if (SP > PL_stack_base + TOPMARK) |
2105 | sv = *(PL_stack_base + TOPMARK + 1); | |
77a005ab | 2106 | else { |
13e08037 GS |
2107 | AV *av = (AV*)PL_curpad[0]; |
2108 | if (hasargs || !av || AvFILLp(av) < 0 | |
2109 | || !(sv = AvARRAY(av)[0])) | |
2110 | { | |
2111 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
cea2e8a9 | 2112 | Perl_croak(aTHX_ "no argument for locked method call"); |
13e08037 | 2113 | } |
77a005ab MB |
2114 | } |
2115 | if (SvROK(sv)) | |
2116 | sv = SvRV(sv); | |
458fb581 MB |
2117 | else { |
2118 | STRLEN len; | |
2119 | char *stashname = SvPV(sv, len); | |
2120 | sv = (SV*)gv_stashpvn(stashname, len, TRUE); | |
2121 | } | |
77a005ab MB |
2122 | } |
2123 | else { | |
2124 | sv = (SV*)cv; | |
2125 | } | |
2126 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
2127 | mg = condpair_magic(sv); | |
2128 | MUTEX_LOCK(MgMUTEXP(mg)); | |
2129 | if (MgOWNER(mg) == thr) | |
2130 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
2131 | else { | |
2132 | while (MgOWNER(mg)) | |
2133 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); | |
2134 | MgOWNER(mg) = thr; | |
8b73bbec | 2135 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: pp_entersub lock %p\n", |
1fd28e87 | 2136 | thr, sv);) |
77a005ab | 2137 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
51371543 | 2138 | SAVEDESTRUCTOR(Perl_unlock_condpair, sv); |
11343788 | 2139 | } |
77a005ab | 2140 | MUTEX_LOCK(CvMUTEXP(cv)); |
11343788 | 2141 | } |
3de9ffa1 MB |
2142 | /* |
2143 | * Now we have permission to enter the sub, we must distinguish | |
2144 | * four cases. (0) It's an XSUB (in which case we don't care | |
2145 | * about ownership); (1) it's ours already (and we're recursing); | |
2146 | * (2) it's free (but we may already be using a cached clone); | |
2147 | * (3) another thread owns it. Case (1) is easy: we just use it. | |
2148 | * Case (2) means we look for a clone--if we have one, use it | |
2149 | * otherwise grab ownership of cv. Case (3) means we look for a | |
2150 | * clone (for non-XSUBs) and have to create one if we don't | |
2151 | * already have one. | |
2152 | * Why look for a clone in case (2) when we could just grab | |
2153 | * ownership of cv straight away? Well, we could be recursing, | |
2154 | * i.e. we originally tried to enter cv while another thread | |
2155 | * owned it (hence we used a clone) but it has been freed up | |
2156 | * and we're now recursing into it. It may or may not be "better" | |
2157 | * to use the clone but at least CvDEPTH can be trusted. | |
2158 | */ | |
2159 | if (CvOWNER(cv) == thr || CvXSUB(cv)) | |
2160 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
11343788 | 2161 | else { |
3de9ffa1 MB |
2162 | /* Case (2) or (3) */ |
2163 | SV **svp; | |
2164 | ||
11343788 | 2165 | /* |
3de9ffa1 MB |
2166 | * XXX Might it be better to release CvMUTEXP(cv) while we |
2167 | * do the hv_fetch? We might find someone has pinched it | |
2168 | * when we look again, in which case we would be in case | |
2169 | * (3) instead of (2) so we'd have to clone. Would the fact | |
2170 | * that we released the mutex more quickly make up for this? | |
2171 | */ | |
b099ddc0 | 2172 | if ((svp = hv_fetch(thr->cvcache, (char *)cv, sizeof(cv), FALSE))) |
6ee623d5 | 2173 | { |
3de9ffa1 | 2174 | /* We already have a clone to use */ |
11343788 | 2175 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
3de9ffa1 | 2176 | cv = *(CV**)svp; |
8b73bbec | 2177 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
1fd28e87 MB |
2178 | "entersub: %p already has clone %p:%s\n", |
2179 | thr, cv, SvPEEK((SV*)cv))); | |
3de9ffa1 MB |
2180 | CvOWNER(cv) = thr; |
2181 | SvREFCNT_inc(cv); | |
2182 | if (CvDEPTH(cv) == 0) | |
51371543 | 2183 | SAVEDESTRUCTOR(unset_cvowner, (void*) cv); |
3de9ffa1 | 2184 | } |
11343788 | 2185 | else { |
3de9ffa1 MB |
2186 | /* (2) => grab ownership of cv. (3) => make clone */ |
2187 | if (!CvOWNER(cv)) { | |
2188 | CvOWNER(cv) = thr; | |
2189 | SvREFCNT_inc(cv); | |
11343788 | 2190 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
8b73bbec | 2191 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
1fd28e87 MB |
2192 | "entersub: %p grabbing %p:%s in stash %s\n", |
2193 | thr, cv, SvPEEK((SV*)cv), CvSTASH(cv) ? | |
3de9ffa1 MB |
2194 | HvNAME(CvSTASH(cv)) : "(none)")); |
2195 | } else { | |
2196 | /* Make a new clone. */ | |
2197 | CV *clonecv; | |
2198 | SvREFCNT_inc(cv); /* don't let it vanish from under us */ | |
2199 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
8b73bbec | 2200 | DEBUG_S((PerlIO_printf(PerlIO_stderr(), |
1fd28e87 MB |
2201 | "entersub: %p cloning %p:%s\n", |
2202 | thr, cv, SvPEEK((SV*)cv)))); | |
3de9ffa1 MB |
2203 | /* |
2204 | * We're creating a new clone so there's no race | |
2205 | * between the original MUTEX_UNLOCK and the | |
2206 | * SvREFCNT_inc since no one will be trying to undef | |
2207 | * it out from underneath us. At least, I don't think | |
2208 | * there's a race... | |
2209 | */ | |
2210 | clonecv = cv_clone(cv); | |
2211 | SvREFCNT_dec(cv); /* finished with this */ | |
199100c8 | 2212 | hv_store(thr->cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0); |
3de9ffa1 MB |
2213 | CvOWNER(clonecv) = thr; |
2214 | cv = clonecv; | |
11343788 | 2215 | SvREFCNT_inc(cv); |
11343788 | 2216 | } |
8b73bbec | 2217 | DEBUG_S(if (CvDEPTH(cv) != 0) |
3de9ffa1 MB |
2218 | PerlIO_printf(PerlIO_stderr(), "depth %ld != 0\n", |
2219 | CvDEPTH(cv));); | |
51371543 | 2220 | SAVEDESTRUCTOR(unset_cvowner, (void*) cv); |
11343788 | 2221 | } |
3de9ffa1 | 2222 | } |
11343788 MB |
2223 | #endif /* USE_THREADS */ |
2224 | ||
a0d0e21e | 2225 | if (CvXSUB(cv)) { |
67caa1fe | 2226 | #ifdef PERL_XSUB_OLDSTYLE |
a0d0e21e | 2227 | if (CvOLDSTYLE(cv)) { |
20ce7b12 | 2228 | I32 (*fp3)(int,int,int); |
a0d0e21e LW |
2229 | dMARK; |
2230 | register I32 items = SP - MARK; | |
67955e0c | 2231 | /* We dont worry to copy from @_. */ |
924508f0 GS |
2232 | while (SP > mark) { |
2233 | SP[1] = SP[0]; | |
2234 | SP--; | |
a0d0e21e | 2235 | } |
3280af22 | 2236 | PL_stack_sp = mark + 1; |
20ce7b12 | 2237 | fp3 = (I32(*)(int,int,int)))CvXSUB(cv; |
ecfc5424 | 2238 | items = (*fp3)(CvXSUBANY(cv).any_i32, |
3280af22 | 2239 | MARK - PL_stack_base + 1, |
ecfc5424 | 2240 | items); |
3280af22 | 2241 | PL_stack_sp = PL_stack_base + items; |
a0d0e21e | 2242 | } |
67caa1fe GS |
2243 | else |
2244 | #endif /* PERL_XSUB_OLDSTYLE */ | |
2245 | { | |
748a9306 LW |
2246 | I32 markix = TOPMARK; |
2247 | ||
a0d0e21e | 2248 | PUTBACK; |
67955e0c | 2249 | |
2250 | if (!hasargs) { | |
2251 | /* Need to copy @_ to stack. Alternative may be to | |
2252 | * switch stack to @_, and copy return values | |
2253 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
6d4ff0d2 MB |
2254 | AV* av; |
2255 | I32 items; | |
2256 | #ifdef USE_THREADS | |
533c011a | 2257 | av = (AV*)PL_curpad[0]; |
6d4ff0d2 | 2258 | #else |
3280af22 | 2259 | av = GvAV(PL_defgv); |
6d4ff0d2 | 2260 | #endif /* USE_THREADS */ |
93965878 | 2261 | items = AvFILLp(av) + 1; /* @_ is not tieable */ |
67955e0c | 2262 | |
2263 | if (items) { | |
2264 | /* Mark is at the end of the stack. */ | |
924508f0 GS |
2265 | EXTEND(SP, items); |
2266 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2267 | SP += items; | |
67955e0c | 2268 | PUTBACK ; |
2269 | } | |
2270 | } | |
67caa1fe GS |
2271 | /* We assume first XSUB in &DB::sub is the called one. */ |
2272 | if (PL_curcopdb) { | |
3280af22 NIS |
2273 | SAVESPTR(PL_curcop); |
2274 | PL_curcop = PL_curcopdb; | |
2275 | PL_curcopdb = NULL; | |
67955e0c | 2276 | } |
2277 | /* Do we need to open block here? XXXX */ | |
0cb96387 | 2278 | (void)(*CvXSUB(cv))(aTHXo_ cv); |
748a9306 LW |
2279 | |
2280 | /* Enforce some sanity in scalar context. */ | |
3280af22 NIS |
2281 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { |
2282 | if (markix > PL_stack_sp - PL_stack_base) | |
2283 | *(PL_stack_base + markix) = &PL_sv_undef; | |
748a9306 | 2284 | else |
3280af22 NIS |
2285 | *(PL_stack_base + markix) = *PL_stack_sp; |
2286 | PL_stack_sp = PL_stack_base + markix; | |
748a9306 | 2287 | } |
a0d0e21e LW |
2288 | } |
2289 | LEAVE; | |
2290 | return NORMAL; | |
2291 | } | |
2292 | else { | |
2293 | dMARK; | |
2294 | register I32 items = SP - MARK; | |
a0d0e21e LW |
2295 | AV* padlist = CvPADLIST(cv); |
2296 | SV** svp = AvARRAY(padlist); | |
533c011a | 2297 | push_return(PL_op->op_next); |
a0d0e21e LW |
2298 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2299 | PUSHSUB(cx); | |
2300 | CvDEPTH(cv)++; | |
6b35e009 GS |
2301 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2302 | * that eval'' ops within this sub know the correct lexical space. | |
2303 | * Owing the speed considerations, we choose to search for the cv | |
2304 | * in doeval() instead. | |
2305 | */ | |
a0d0e21e LW |
2306 | if (CvDEPTH(cv) < 2) |
2307 | (void)SvREFCNT_inc(cv); | |
2308 | else { /* save temporaries on recursion? */ | |
93965878 | 2309 | if (CvDEPTH(cv) > AvFILLp(padlist)) { |
a0d0e21e LW |
2310 | AV *av; |
2311 | AV *newpad = newAV(); | |
4aa0a1f7 | 2312 | SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]); |
93965878 | 2313 | I32 ix = AvFILLp((AV*)svp[1]); |
a0d0e21e | 2314 | svp = AvARRAY(svp[0]); |
748a9306 | 2315 | for ( ;ix > 0; ix--) { |
3280af22 | 2316 | if (svp[ix] != &PL_sv_undef) { |
748a9306 | 2317 | char *name = SvPVX(svp[ix]); |
5f05dabc | 2318 | if ((SvFLAGS(svp[ix]) & SVf_FAKE) /* outer lexical? */ |
2319 | || *name == '&') /* anonymous code? */ | |
2320 | { | |
2321 | av_store(newpad, ix, SvREFCNT_inc(oldpad[ix])); | |
748a9306 LW |
2322 | } |
2323 | else { /* our own lexical */ | |
2324 | if (*name == '@') | |
2325 | av_store(newpad, ix, sv = (SV*)newAV()); | |
2326 | else if (*name == '%') | |
2327 | av_store(newpad, ix, sv = (SV*)newHV()); | |
2328 | else | |
2329 | av_store(newpad, ix, sv = NEWSV(0,0)); | |
2330 | SvPADMY_on(sv); | |
2331 | } | |
a0d0e21e LW |
2332 | } |
2333 | else { | |
748a9306 | 2334 | av_store(newpad, ix, sv = NEWSV(0,0)); |
a0d0e21e LW |
2335 | SvPADTMP_on(sv); |
2336 | } | |
2337 | } | |
2338 | av = newAV(); /* will be @_ */ | |
2339 | av_extend(av, 0); | |
2340 | av_store(newpad, 0, (SV*)av); | |
2341 | AvFLAGS(av) = AVf_REIFY; | |
2342 | av_store(padlist, CvDEPTH(cv), (SV*)newpad); | |
93965878 | 2343 | AvFILLp(padlist) = CvDEPTH(cv); |
a0d0e21e LW |
2344 | svp = AvARRAY(padlist); |
2345 | } | |
2346 | } | |
6d4ff0d2 MB |
2347 | #ifdef USE_THREADS |
2348 | if (!hasargs) { | |
533c011a | 2349 | AV* av = (AV*)PL_curpad[0]; |
6d4ff0d2 | 2350 | |
93965878 | 2351 | items = AvFILLp(av) + 1; |
6d4ff0d2 MB |
2352 | if (items) { |
2353 | /* Mark is at the end of the stack. */ | |
924508f0 GS |
2354 | EXTEND(SP, items); |
2355 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2356 | SP += items; | |
6d4ff0d2 MB |
2357 | PUTBACK ; |
2358 | } | |
2359 | } | |
2360 | #endif /* USE_THREADS */ | |
3280af22 NIS |
2361 | SAVESPTR(PL_curpad); |
2362 | PL_curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]); | |
6d4ff0d2 MB |
2363 | #ifndef USE_THREADS |
2364 | if (hasargs) | |
2365 | #endif /* USE_THREADS */ | |
2366 | { | |
2367 | AV* av; | |
a0d0e21e LW |
2368 | SV** ary; |
2369 | ||
77a005ab | 2370 | #if 0 |
8b73bbec | 2371 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
0f15f207 | 2372 | "%p entersub preparing @_\n", thr)); |
77a005ab | 2373 | #endif |
3280af22 | 2374 | av = (AV*)PL_curpad[0]; |
a0d0e21e LW |
2375 | if (AvREAL(av)) { |
2376 | av_clear(av); | |
2377 | AvREAL_off(av); | |
2378 | } | |
6d4ff0d2 | 2379 | #ifndef USE_THREADS |
3280af22 NIS |
2380 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2381 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); | |
6d4ff0d2 MB |
2382 | #endif /* USE_THREADS */ |
2383 | cx->blk_sub.argarray = av; | |
a0d0e21e LW |
2384 | ++MARK; |
2385 | ||
2386 | if (items > AvMAX(av) + 1) { | |
2387 | ary = AvALLOC(av); | |
2388 | if (AvARRAY(av) != ary) { | |
2389 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
2390 | SvPVX(av) = (char*)ary; | |
2391 | } | |
2392 | if (items > AvMAX(av) + 1) { | |
2393 | AvMAX(av) = items - 1; | |
2394 | Renew(ary,items,SV*); | |
2395 | AvALLOC(av) = ary; | |
2396 | SvPVX(av) = (char*)ary; | |
2397 | } | |
2398 | } | |
2399 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2400 | AvFILLp(av) = items - 1; |
a0d0e21e LW |
2401 | |
2402 | while (items--) { | |
2403 | if (*MARK) | |
2404 | SvTEMP_off(*MARK); | |
2405 | MARK++; | |
2406 | } | |
2407 | } | |
4a925ff6 GS |
2408 | /* warning must come *after* we fully set up the context |
2409 | * stuff so that __WARN__ handlers can safely dounwind() | |
2410 | * if they want to | |
2411 | */ | |
2412 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) | |
2413 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) | |
2414 | sub_crush_depth(cv); | |
77a005ab | 2415 | #if 0 |
8b73bbec | 2416 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
0f15f207 | 2417 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab | 2418 | #endif |
a0d0e21e LW |
2419 | RETURNOP(CvSTART(cv)); |
2420 | } | |
2421 | } | |
2422 | ||
44a8e56a | 2423 | void |
864dbfa3 | 2424 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2425 | { |
2426 | if (CvANON(cv)) | |
cea2e8a9 | 2427 | Perl_warner(aTHX_ WARN_RECURSION, "Deep recursion on anonymous subroutine"); |
44a8e56a | 2428 | else { |
2429 | SV* tmpstr = sv_newmortal(); | |
2430 | gv_efullname3(tmpstr, CvGV(cv), Nullch); | |
cea2e8a9 | 2431 | Perl_warner(aTHX_ WARN_RECURSION, "Deep recursion on subroutine \"%s\"", |
599cee73 | 2432 | SvPVX(tmpstr)); |
44a8e56a | 2433 | } |
2434 | } | |
2435 | ||
a0d0e21e LW |
2436 | PP(pp_aelem) |
2437 | { | |
4e35701f | 2438 | djSP; |
a0d0e21e | 2439 | SV** svp; |
748a9306 | 2440 | I32 elem = POPi; |
68dc0745 | 2441 | AV* av = (AV*)POPs; |
533c011a NIS |
2442 | U32 lval = PL_op->op_flags & OPf_MOD; |
2443 | U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av)); | |
be6c24e0 | 2444 | SV *sv; |
a0d0e21e | 2445 | |
748a9306 | 2446 | if (elem > 0) |
3280af22 | 2447 | elem -= PL_curcop->cop_arybase; |
a0d0e21e LW |
2448 | if (SvTYPE(av) != SVt_PVAV) |
2449 | RETPUSHUNDEF; | |
68dc0745 | 2450 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2451 | if (lval) { |
3280af22 | 2452 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 2453 | SV* lv; |
2454 | if (!defer) | |
cea2e8a9 | 2455 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 2456 | lv = sv_newmortal(); |
2457 | sv_upgrade(lv, SVt_PVLV); | |
2458 | LvTYPE(lv) = 'y'; | |
2459 | sv_magic(lv, Nullsv, 'y', Nullch, 0); | |
2460 | LvTARG(lv) = SvREFCNT_inc(av); | |
2461 | LvTARGOFF(lv) = elem; | |
2462 | LvTARGLEN(lv) = 1; | |
2463 | PUSHs(lv); | |
2464 | RETURN; | |
2465 | } | |
533c011a | 2466 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 | 2467 | save_aelem(av, elem, svp); |
533c011a NIS |
2468 | else if (PL_op->op_private & OPpDEREF) |
2469 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 2470 | } |
3280af22 | 2471 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
2472 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2473 | sv = sv_mortalcopy(sv); | |
2474 | PUSHs(sv); | |
a0d0e21e LW |
2475 | RETURN; |
2476 | } | |
2477 | ||
02a9e968 | 2478 | void |
864dbfa3 | 2479 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 CS |
2480 | { |
2481 | if (SvGMAGICAL(sv)) | |
2482 | mg_get(sv); | |
2483 | if (!SvOK(sv)) { | |
2484 | if (SvREADONLY(sv)) | |
cea2e8a9 | 2485 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc | 2486 | if (SvTYPE(sv) < SVt_RV) |
2487 | sv_upgrade(sv, SVt_RV); | |
2488 | else if (SvTYPE(sv) >= SVt_PV) { | |
2489 | (void)SvOOK_off(sv); | |
2490 | Safefree(SvPVX(sv)); | |
2491 | SvLEN(sv) = SvCUR(sv) = 0; | |
2492 | } | |
68dc0745 | 2493 | switch (to_what) { |
5f05dabc | 2494 | case OPpDEREF_SV: |
8c52afec | 2495 | SvRV(sv) = NEWSV(355,0); |
5f05dabc | 2496 | break; |
2497 | case OPpDEREF_AV: | |
2498 | SvRV(sv) = (SV*)newAV(); | |
2499 | break; | |
2500 | case OPpDEREF_HV: | |
2501 | SvRV(sv) = (SV*)newHV(); | |
2502 | break; | |
2503 | } | |
02a9e968 CS |
2504 | SvROK_on(sv); |
2505 | SvSETMAGIC(sv); | |
2506 | } | |
2507 | } | |
2508 | ||
a0d0e21e LW |
2509 | PP(pp_method) |
2510 | { | |
4e35701f | 2511 | djSP; |
f5d5a27c CS |
2512 | SV* sv = TOPs; |
2513 | ||
2514 | if (SvROK(sv)) { | |
eda383f2 | 2515 | SV* rsv = SvRV(sv); |
f5d5a27c CS |
2516 | if (SvTYPE(rsv) == SVt_PVCV) { |
2517 | SETs(rsv); | |
2518 | RETURN; | |
2519 | } | |
2520 | } | |
2521 | ||
2522 | SETs(method_common(sv, Null(U32*))); | |
2523 | RETURN; | |
2524 | } | |
2525 | ||
2526 | PP(pp_method_named) | |
2527 | { | |
2528 | djSP; | |
2529 | SV* sv = cSVOP->op_sv; | |
2530 | U32 hash = SvUVX(sv); | |
2531 | ||
2532 | XPUSHs(method_common(sv, &hash)); | |
2533 | RETURN; | |
2534 | } | |
2535 | ||
2536 | STATIC SV * | |
2537 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
2538 | { | |
2539 | djSP; | |
a0d0e21e LW |
2540 | SV* sv; |
2541 | SV* ob; | |
2542 | GV* gv; | |
56304f61 CS |
2543 | HV* stash; |
2544 | char* name; | |
f5d5a27c | 2545 | STRLEN namelen; |
ac91690f CS |
2546 | char* packname; |
2547 | STRLEN packlen; | |
a0d0e21e | 2548 | |
f5d5a27c | 2549 | name = SvPV(meth, namelen); |
3280af22 | 2550 | sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c | 2551 | |
16d20bd9 AD |
2552 | if (SvGMAGICAL(sv)) |
2553 | mg_get(sv); | |
a0d0e21e | 2554 | if (SvROK(sv)) |
16d20bd9 | 2555 | ob = (SV*)SvRV(sv); |
a0d0e21e LW |
2556 | else { |
2557 | GV* iogv; | |
a0d0e21e | 2558 | |
56304f61 | 2559 | packname = Nullch; |
a0d0e21e | 2560 | if (!SvOK(sv) || |
56304f61 | 2561 | !(packname = SvPV(sv, packlen)) || |
a0d0e21e LW |
2562 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
2563 | !(ob=(SV*)GvIO(iogv))) | |
2564 | { | |
834a4ddd LW |
2565 | if (!packname || |
2566 | ((*(U8*)packname >= 0xc0 && IN_UTF8) | |
b86a2fa7 | 2567 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
2568 | : !isIDFIRST(*packname) |
2569 | )) | |
2570 | { | |
f5d5a27c CS |
2571 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
2572 | SvOK(sv) ? "without a package or object reference" | |
2573 | : "on an undefined value"); | |
834a4ddd | 2574 | } |
56304f61 | 2575 | stash = gv_stashpvn(packname, packlen, TRUE); |
ac91690f | 2576 | goto fetch; |
a0d0e21e | 2577 | } |
3280af22 | 2578 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e LW |
2579 | } |
2580 | ||
ac91690f | 2581 | if (!ob || !SvOBJECT(ob)) |
f5d5a27c CS |
2582 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
2583 | name); | |
a0d0e21e | 2584 | |
56304f61 | 2585 | stash = SvSTASH(ob); |
a0d0e21e | 2586 | |
ac91690f | 2587 | fetch: |
f5d5a27c CS |
2588 | /* shortcut for simple names */ |
2589 | if (hashp) { | |
2590 | HE* he = hv_fetch_ent(stash, meth, 0, *hashp); | |
2591 | if (he) { | |
2592 | gv = (GV*)HeVAL(he); | |
2593 | if (isGV(gv) && GvCV(gv) && | |
2594 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) | |
2595 | return (SV*)GvCV(gv); | |
2596 | } | |
2597 | } | |
2598 | ||
ac91690f | 2599 | gv = gv_fetchmethod(stash, name); |
56304f61 CS |
2600 | if (!gv) { |
2601 | char* leaf = name; | |
2602 | char* sep = Nullch; | |
2603 | char* p; | |
2604 | ||
2605 | for (p = name; *p; p++) { | |
2606 | if (*p == '\'') | |
2607 | sep = p, leaf = p + 1; | |
2608 | else if (*p == ':' && *(p + 1) == ':') | |
2609 | sep = p, leaf = p + 2; | |
2610 | } | |
2611 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { | |
3280af22 | 2612 | packname = HvNAME(sep ? PL_curcop->cop_stash : stash); |
56304f61 CS |
2613 | packlen = strlen(packname); |
2614 | } | |
2615 | else { | |
2616 | packname = name; | |
2617 | packlen = sep - name; | |
2618 | } | |
f5d5a27c CS |
2619 | Perl_croak(aTHX_ |
2620 | "Can't locate object method \"%s\" via package \"%s\"", | |
2621 | leaf, packname); | |
56304f61 | 2622 | } |
f5d5a27c | 2623 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e | 2624 | } |
22239a37 | 2625 | |
51371543 GS |
2626 | #ifdef USE_THREADS |
2627 | static void | |
2628 | unset_cvowner(pTHXo_ void *cvarg) | |
2629 | { | |
2630 | register CV* cv = (CV *) cvarg; | |
2631 | #ifdef DEBUGGING | |
2632 | dTHR; | |
2633 | #endif /* DEBUGGING */ | |
2634 | ||
2635 | DEBUG_S((PerlIO_printf(PerlIO_stderr(), "%p unsetting CvOWNER of %p:%s\n", | |
2636 | thr, cv, SvPEEK((SV*)cv)))); | |
2637 | MUTEX_LOCK(CvMUTEXP(cv)); | |
2638 | DEBUG_S(if (CvDEPTH(cv) != 0) | |
2639 | PerlIO_printf(PerlIO_stderr(), "depth %ld != 0\n", | |
2640 | CvDEPTH(cv));); | |
2641 | assert(thr == CvOWNER(cv)); | |
2642 | CvOWNER(cv) = 0; | |
2643 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
2644 | SvREFCNT_dec(cv); | |
2645 | } | |
2646 | #endif /* USE_THREADS */ |