Commit | Line | Data |
a0d0e21e |
1 | /* pp_hot.c |
2 | * |
bc89e66f |
3 | * Copyright (c) 1991-2001, Larry Wall |
a0d0e21e |
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 |
20 | #include "perl.h" |
21 | |
22 | /* Hot code. */ |
23 | |
11343788 |
24 | #ifdef USE_THREADS |
51371543 |
25 | static void unset_cvowner(pTHXo_ void *cvarg); |
11343788 |
26 | #endif /* USE_THREADS */ |
27 | |
a0d0e21e |
28 | PP(pp_const) |
29 | { |
4e35701f |
30 | djSP; |
1d7c1841 |
31 | XPUSHs(cSVOP_sv); |
a0d0e21e |
32 | RETURN; |
33 | } |
34 | |
35 | PP(pp_nextstate) |
36 | { |
533c011a |
37 | PL_curcop = (COP*)PL_op; |
a0d0e21e |
38 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 |
39 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e |
40 | FREETMPS; |
41 | return NORMAL; |
42 | } |
43 | |
44 | PP(pp_gvsv) |
45 | { |
4e35701f |
46 | djSP; |
924508f0 |
47 | EXTEND(SP,1); |
533c011a |
48 | if (PL_op->op_private & OPpLVAL_INTRO) |
1d7c1841 |
49 | PUSHs(save_scalar(cGVOP_gv)); |
a0d0e21e |
50 | else |
1d7c1841 |
51 | PUSHs(GvSV(cGVOP_gv)); |
a0d0e21e |
52 | RETURN; |
53 | } |
54 | |
55 | PP(pp_null) |
56 | { |
57 | return NORMAL; |
58 | } |
59 | |
7399586d |
60 | PP(pp_setstate) |
61 | { |
62 | PL_curcop = (COP*)PL_op; |
63 | return NORMAL; |
64 | } |
65 | |
a0d0e21e |
66 | PP(pp_pushmark) |
67 | { |
3280af22 |
68 | PUSHMARK(PL_stack_sp); |
a0d0e21e |
69 | return NORMAL; |
70 | } |
71 | |
72 | PP(pp_stringify) |
73 | { |
4e35701f |
74 | djSP; dTARGET; |
a0d0e21e |
75 | STRLEN len; |
76 | char *s; |
77 | s = SvPV(TOPs,len); |
78 | sv_setpvn(TARG,s,len); |
9aa983d2 |
79 | if (SvUTF8(TOPs)) |
234a4bc6 |
80 | SvUTF8_on(TARG); |
a227d84d |
81 | else |
82 | SvUTF8_off(TARG); |
a0d0e21e |
83 | SETTARG; |
84 | RETURN; |
85 | } |
86 | |
87 | PP(pp_gv) |
88 | { |
4e35701f |
89 | djSP; |
1d7c1841 |
90 | XPUSHs((SV*)cGVOP_gv); |
a0d0e21e |
91 | RETURN; |
92 | } |
93 | |
94 | PP(pp_and) |
95 | { |
4e35701f |
96 | djSP; |
a0d0e21e |
97 | if (!SvTRUE(TOPs)) |
98 | RETURN; |
99 | else { |
100 | --SP; |
101 | RETURNOP(cLOGOP->op_other); |
102 | } |
103 | } |
104 | |
105 | PP(pp_sassign) |
106 | { |
4e35701f |
107 | djSP; dPOPTOPssrl; |
748a9306 |
108 | |
533c011a |
109 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
a0d0e21e |
110 | SV *temp; |
111 | temp = left; left = right; right = temp; |
112 | } |
3280af22 |
113 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e |
114 | TAINT_NOT; |
54310121 |
115 | SvSetMagicSV(right, left); |
a0d0e21e |
116 | SETs(right); |
117 | RETURN; |
118 | } |
119 | |
120 | PP(pp_cond_expr) |
121 | { |
4e35701f |
122 | djSP; |
a0d0e21e |
123 | if (SvTRUEx(POPs)) |
1a67a97c |
124 | RETURNOP(cLOGOP->op_other); |
a0d0e21e |
125 | else |
1a67a97c |
126 | RETURNOP(cLOGOP->op_next); |
a0d0e21e |
127 | } |
128 | |
129 | PP(pp_unstack) |
130 | { |
131 | I32 oldsave; |
132 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 |
133 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e |
134 | FREETMPS; |
3280af22 |
135 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e |
136 | LEAVE_SCOPE(oldsave); |
137 | return NORMAL; |
138 | } |
139 | |
a0d0e21e |
140 | PP(pp_concat) |
141 | { |
4e35701f |
142 | djSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 |
143 | { |
144 | dPOPTOPssrl; |
43ebc500 |
145 | SV* rcopy = Nullsv; |
69b47968 |
146 | |
43ebc500 |
147 | if (SvGMAGICAL(left)) |
82f2f503 |
148 | mg_get(left); |
43ebc500 |
149 | if (TARG == right && SvGMAGICAL(right)) |
150 | mg_get(right); |
82f2f503 |
151 | |
43ebc500 |
152 | if (TARG == right && left != right) |
153 | /* Clone since otherwise we cannot prepend. */ |
154 | rcopy = sv_2mortal(newSVsv(right)); |
7889fe52 |
155 | |
43ebc500 |
156 | if (TARG != left) |
157 | sv_setsv(TARG, left); |
a12c0f56 |
158 | |
43ebc500 |
159 | if (TARG == right) { |
160 | if (left == right) { |
161 | /* $right = $right . $right; */ |
162 | STRLEN rlen; |
163 | char *rpv = SvPV(right, rlen); |
37931a30 |
164 | |
43ebc500 |
165 | sv_catpvn(TARG, rpv, rlen); |
69b47968 |
166 | } |
43ebc500 |
167 | else /* $right = $left . $right; */ |
168 | sv_catsv(TARG, rcopy); |
169 | } |
170 | else { |
171 | if (!SvOK(TARG)) /* Avoid warning when concatenating to undef. */ |
172 | sv_setpv(TARG, ""); |
173 | /* $other = $left . $right; */ |
174 | /* $left = $left . $right; */ |
175 | sv_catsv(TARG, right); |
a0d0e21e |
176 | } |
43ebc500 |
177 | |
5bc28da9 |
178 | #if defined(PERL_Y2KWARN) |
43ebc500 |
179 | if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K)) { |
180 | STRLEN n; |
181 | char *s = SvPV(TARG,n); |
182 | if (n >= 2 && s[n-2] == '1' && s[n-1] == '9' |
183 | && (n == 2 || !isDIGIT(s[n-3]))) |
184 | { |
185 | Perl_warner(aTHX_ WARN_Y2K, "Possible Y2K bug: %s", |
186 | "about to append an integer to '19'"); |
5bc28da9 |
187 | } |
5bc28da9 |
188 | } |
43ebc500 |
189 | #endif |
190 | |
a0d0e21e |
191 | SETTARG; |
192 | RETURN; |
748a9306 |
193 | } |
a0d0e21e |
194 | } |
195 | |
196 | PP(pp_padsv) |
197 | { |
4e35701f |
198 | djSP; dTARGET; |
a0d0e21e |
199 | XPUSHs(TARG); |
533c011a |
200 | if (PL_op->op_flags & OPf_MOD) { |
201 | if (PL_op->op_private & OPpLVAL_INTRO) |
202 | SAVECLEARSV(PL_curpad[PL_op->op_targ]); |
203 | else if (PL_op->op_private & OPpDEREF) { |
8ec5e241 |
204 | PUTBACK; |
533c011a |
205 | vivify_ref(PL_curpad[PL_op->op_targ], PL_op->op_private & OPpDEREF); |
8ec5e241 |
206 | SPAGAIN; |
207 | } |
4633a7c4 |
208 | } |
a0d0e21e |
209 | RETURN; |
210 | } |
211 | |
212 | PP(pp_readline) |
213 | { |
f5284f61 |
214 | tryAMAGICunTARGET(iter, 0); |
3280af22 |
215 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 |
216 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f |
217 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 |
218 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 |
219 | else { |
f5284f61 |
220 | dSP; |
221 | XPUSHs((SV*)PL_last_in_gv); |
222 | PUTBACK; |
cea2e8a9 |
223 | pp_rv2gv(); |
f5284f61 |
224 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 |
225 | } |
226 | } |
a0d0e21e |
227 | return do_readline(); |
228 | } |
229 | |
230 | PP(pp_eq) |
231 | { |
1c846c1f |
232 | djSP; tryAMAGICbinSET(eq,0); |
28e5dec8 |
233 | #ifdef PERL_PRESERVE_IVUV |
234 | SvIV_please(TOPs); |
235 | if (SvIOK(TOPs)) { |
236 | /* Unless the left argument is integer in range we are going to have to |
237 | use NV maths. Hence only attempt to coerce the right argument if |
238 | we know the left is integer. */ |
239 | SvIV_please(TOPm1s); |
240 | if (SvIOK(TOPm1s)) { |
241 | bool auvok = SvUOK(TOPm1s); |
242 | bool buvok = SvUOK(TOPs); |
a12c0f56 |
243 | |
28e5dec8 |
244 | if (!auvok && !buvok) { /* ## IV == IV ## */ |
245 | IV aiv = SvIVX(TOPm1s); |
246 | IV biv = SvIVX(TOPs); |
247 | |
248 | SP--; |
249 | SETs(boolSV(aiv == biv)); |
250 | RETURN; |
251 | } |
252 | if (auvok && buvok) { /* ## UV == UV ## */ |
253 | UV auv = SvUVX(TOPm1s); |
254 | UV buv = SvUVX(TOPs); |
255 | |
256 | SP--; |
257 | SETs(boolSV(auv == buv)); |
258 | RETURN; |
259 | } |
260 | { /* ## Mixed IV,UV ## */ |
261 | IV iv; |
262 | UV uv; |
263 | |
264 | /* == is commutative so swap if needed (save code) */ |
265 | if (auvok) { |
266 | /* swap. top of stack (b) is the iv */ |
267 | iv = SvIVX(TOPs); |
268 | SP--; |
269 | if (iv < 0) { |
270 | /* As (a) is a UV, it's >0, so it cannot be == */ |
271 | SETs(&PL_sv_no); |
272 | RETURN; |
273 | } |
274 | uv = SvUVX(TOPs); |
275 | } else { |
276 | iv = SvIVX(TOPm1s); |
277 | SP--; |
278 | if (iv < 0) { |
279 | /* As (b) is a UV, it's >0, so it cannot be == */ |
280 | SETs(&PL_sv_no); |
281 | RETURN; |
282 | } |
283 | uv = SvUVX(*(SP+1)); /* Do I want TOPp1s() ? */ |
284 | } |
285 | /* we know iv is >= 0 */ |
286 | if (uv > (UV) IV_MAX) { |
287 | SETs(&PL_sv_no); |
288 | RETURN; |
289 | } |
290 | SETs(boolSV((UV)iv == uv)); |
291 | RETURN; |
292 | } |
293 | } |
294 | } |
295 | #endif |
a0d0e21e |
296 | { |
297 | dPOPnv; |
54310121 |
298 | SETs(boolSV(TOPn == value)); |
a0d0e21e |
299 | RETURN; |
300 | } |
301 | } |
302 | |
303 | PP(pp_preinc) |
304 | { |
4e35701f |
305 | djSP; |
68dc0745 |
306 | if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV) |
d470f89e |
307 | DIE(aTHX_ PL_no_modify); |
25da4f38 |
308 | if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) && |
55497cff |
309 | SvIVX(TOPs) != IV_MAX) |
310 | { |
748a9306 |
311 | ++SvIVX(TOPs); |
55497cff |
312 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 |
313 | } |
28e5dec8 |
314 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 |
315 | sv_inc(TOPs); |
a0d0e21e |
316 | SvSETMAGIC(TOPs); |
317 | return NORMAL; |
318 | } |
319 | |
320 | PP(pp_or) |
321 | { |
4e35701f |
322 | djSP; |
a0d0e21e |
323 | if (SvTRUE(TOPs)) |
324 | RETURN; |
325 | else { |
326 | --SP; |
327 | RETURNOP(cLOGOP->op_other); |
328 | } |
329 | } |
330 | |
331 | PP(pp_add) |
332 | { |
28e5dec8 |
333 | djSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
334 | useleft = USE_LEFT(TOPm1s); |
335 | #ifdef PERL_PRESERVE_IVUV |
336 | /* We must see if we can perform the addition with integers if possible, |
337 | as the integer code detects overflow while the NV code doesn't. |
338 | If either argument hasn't had a numeric conversion yet attempt to get |
339 | the IV. It's important to do this now, rather than just assuming that |
340 | it's not IOK as a PV of "9223372036854775806" may not take well to NV |
341 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to |
342 | integer in case the second argument is IV=9223372036854775806 |
343 | We can (now) rely on sv_2iv to do the right thing, only setting the |
344 | public IOK flag if the value in the NV (or PV) slot is truly integer. |
345 | |
346 | A side effect is that this also aggressively prefers integer maths over |
7dca457a |
347 | fp maths for integer values. |
348 | |
349 | How to detect overflow? |
350 | |
351 | C 99 section 6.2.6.1 says |
352 | |
353 | The range of nonnegative values of a signed integer type is a subrange |
354 | of the corresponding unsigned integer type, and the representation of |
355 | the same value in each type is the same. A computation involving |
356 | unsigned operands can never overflow, because a result that cannot be |
357 | represented by the resulting unsigned integer type is reduced modulo |
358 | the number that is one greater than the largest value that can be |
359 | represented by the resulting type. |
360 | |
361 | (the 9th paragraph) |
362 | |
363 | which I read as "unsigned ints wrap." |
364 | |
365 | signed integer overflow seems to be classed as "exception condition" |
366 | |
367 | If an exceptional condition occurs during the evaluation of an |
368 | expression (that is, if the result is not mathematically defined or not |
369 | in the range of representable values for its type), the behavior is |
370 | undefined. |
371 | |
372 | (6.5, the 5th paragraph) |
373 | |
374 | I had assumed that on 2s complement machines signed arithmetic would |
375 | wrap, hence coded pp_add and pp_subtract on the assumption that |
376 | everything perl builds on would be happy. After much wailing and |
377 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, |
378 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- |
379 | unsigned code below is actually shorter than the old code. :-) |
380 | */ |
381 | |
28e5dec8 |
382 | SvIV_please(TOPs); |
383 | if (SvIOK(TOPs)) { |
384 | /* Unless the left argument is integer in range we are going to have to |
385 | use NV maths. Hence only attempt to coerce the right argument if |
386 | we know the left is integer. */ |
7dca457a |
387 | register UV auv; |
388 | bool auvok; |
389 | bool a_valid = 0; |
390 | |
28e5dec8 |
391 | if (!useleft) { |
7dca457a |
392 | auv = 0; |
393 | a_valid = auvok = 1; |
394 | /* left operand is undef, treat as zero. + 0 is identity, |
395 | Could SETi or SETu right now, but space optimise by not adding |
396 | lots of code to speed up what is probably a rarish case. */ |
397 | } else { |
398 | /* Left operand is defined, so is it IV? */ |
399 | SvIV_please(TOPm1s); |
400 | if (SvIOK(TOPm1s)) { |
401 | if ((auvok = SvUOK(TOPm1s))) |
402 | auv = SvUVX(TOPm1s); |
403 | else { |
404 | register IV aiv = SvIVX(TOPm1s); |
405 | if (aiv >= 0) { |
406 | auv = aiv; |
407 | auvok = 1; /* Now acting as a sign flag. */ |
408 | } else { /* 2s complement assumption for IV_MIN */ |
409 | auv = (UV)-aiv; |
410 | } |
411 | } |
412 | a_valid = 1; |
28e5dec8 |
413 | } |
414 | } |
7dca457a |
415 | if (a_valid) { |
416 | bool result_good = 0; |
417 | UV result; |
418 | register UV buv; |
28e5dec8 |
419 | bool buvok = SvUOK(TOPs); |
7dca457a |
420 | |
421 | if (buvok) |
422 | buv = SvUVX(TOPs); |
423 | else { |
424 | register IV biv = SvIVX(TOPs); |
425 | if (biv >= 0) { |
426 | buv = biv; |
427 | buvok = 1; |
428 | } else |
429 | buv = (UV)-biv; |
430 | } |
431 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, |
432 | else "IV" now, independant of how it came in. |
433 | if a, b represents positive, A, B negative, a maps to -A etc |
434 | a + b => (a + b) |
435 | A + b => -(a - b) |
436 | a + B => (a - b) |
437 | A + B => -(a + b) |
438 | all UV maths. negate result if A negative. |
439 | add if signs same, subtract if signs differ. */ |
440 | |
441 | if (auvok ^ buvok) { |
442 | /* Signs differ. */ |
443 | if (auv >= buv) { |
444 | result = auv - buv; |
445 | /* Must get smaller */ |
446 | if (result <= auv) |
447 | result_good = 1; |
448 | } else { |
449 | result = buv - auv; |
450 | if (result <= buv) { |
451 | /* result really should be -(auv-buv). as its negation |
452 | of true value, need to swap our result flag */ |
453 | auvok = !auvok; |
454 | result_good = 1; |
28e5dec8 |
455 | } |
456 | } |
7dca457a |
457 | } else { |
458 | /* Signs same */ |
459 | result = auv + buv; |
460 | if (result >= auv) |
461 | result_good = 1; |
462 | } |
463 | if (result_good) { |
464 | SP--; |
465 | if (auvok) |
28e5dec8 |
466 | SETu( result ); |
7dca457a |
467 | else { |
468 | /* Negate result */ |
469 | if (result <= (UV)IV_MIN) |
470 | SETi( -(IV)result ); |
471 | else { |
472 | /* result valid, but out of range for IV. */ |
473 | SETn( -(NV)result ); |
28e5dec8 |
474 | } |
475 | } |
7dca457a |
476 | RETURN; |
477 | } /* Overflow, drop through to NVs. */ |
28e5dec8 |
478 | } |
479 | } |
480 | #endif |
a0d0e21e |
481 | { |
28e5dec8 |
482 | dPOPnv; |
483 | if (!useleft) { |
484 | /* left operand is undef, treat as zero. + 0.0 is identity. */ |
485 | SETn(value); |
486 | RETURN; |
487 | } |
488 | SETn( value + TOPn ); |
489 | RETURN; |
a0d0e21e |
490 | } |
491 | } |
492 | |
493 | PP(pp_aelemfast) |
494 | { |
4e35701f |
495 | djSP; |
1d7c1841 |
496 | AV *av = GvAV(cGVOP_gv); |
533c011a |
497 | U32 lval = PL_op->op_flags & OPf_MOD; |
498 | SV** svp = av_fetch(av, PL_op->op_private, lval); |
3280af22 |
499 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 |
500 | EXTEND(SP, 1); |
be6c24e0 |
501 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
502 | sv = sv_mortalcopy(sv); |
503 | PUSHs(sv); |
a0d0e21e |
504 | RETURN; |
505 | } |
506 | |
507 | PP(pp_join) |
508 | { |
4e35701f |
509 | djSP; dMARK; dTARGET; |
a0d0e21e |
510 | MARK++; |
511 | do_join(TARG, *MARK, MARK, SP); |
512 | SP = MARK; |
513 | SETs(TARG); |
514 | RETURN; |
515 | } |
516 | |
517 | PP(pp_pushre) |
518 | { |
4e35701f |
519 | djSP; |
44a8e56a |
520 | #ifdef DEBUGGING |
521 | /* |
522 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs |
523 | * will be enough to hold an OP*. |
524 | */ |
525 | SV* sv = sv_newmortal(); |
526 | sv_upgrade(sv, SVt_PVLV); |
527 | LvTYPE(sv) = '/'; |
533c011a |
528 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a |
529 | XPUSHs(sv); |
530 | #else |
6b88bc9c |
531 | XPUSHs((SV*)PL_op); |
44a8e56a |
532 | #endif |
a0d0e21e |
533 | RETURN; |
534 | } |
535 | |
536 | /* Oversized hot code. */ |
537 | |
538 | PP(pp_print) |
539 | { |
4e35701f |
540 | djSP; dMARK; dORIGMARK; |
a0d0e21e |
541 | GV *gv; |
542 | IO *io; |
760ac839 |
543 | register PerlIO *fp; |
236988e4 |
544 | MAGIC *mg; |
a0d0e21e |
545 | |
533c011a |
546 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
547 | gv = (GV*)*++MARK; |
548 | else |
3280af22 |
549 | gv = PL_defoutgv; |
155aba94 |
550 | if ((mg = SvTIED_mg((SV*)gv, 'q'))) { |
01bb7c6d |
551 | had_magic: |
68dc0745 |
552 | if (MARK == ORIGMARK) { |
1c846c1f |
553 | /* If using default handle then we need to make space to |
a60c0954 |
554 | * pass object as 1st arg, so move other args up ... |
555 | */ |
4352c267 |
556 | MEXTEND(SP, 1); |
68dc0745 |
557 | ++MARK; |
558 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); |
559 | ++SP; |
560 | } |
561 | PUSHMARK(MARK - 1); |
33c27489 |
562 | *MARK = SvTIED_obj((SV*)gv, mg); |
68dc0745 |
563 | PUTBACK; |
236988e4 |
564 | ENTER; |
864dbfa3 |
565 | call_method("PRINT", G_SCALAR); |
236988e4 |
566 | LEAVE; |
567 | SPAGAIN; |
68dc0745 |
568 | MARK = ORIGMARK + 1; |
569 | *MARK = *SP; |
570 | SP = MARK; |
236988e4 |
571 | RETURN; |
572 | } |
a0d0e21e |
573 | if (!(io = GvIO(gv))) { |
01bb7c6d |
574 | if ((GvEGV(gv)) && (mg = SvTIED_mg((SV*)GvEGV(gv),'q'))) |
575 | goto had_magic; |
2dd78f96 |
576 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
577 | report_evil_fh(gv, io, PL_op->op_type); |
748a9306 |
578 | SETERRNO(EBADF,RMS$_IFI); |
a0d0e21e |
579 | goto just_say_no; |
580 | } |
581 | else if (!(fp = IoOFP(io))) { |
599cee73 |
582 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 |
583 | if (IoIFP(io)) |
584 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); |
2dd78f96 |
585 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f |
586 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e |
587 | } |
748a9306 |
588 | SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI); |
a0d0e21e |
589 | goto just_say_no; |
590 | } |
591 | else { |
592 | MARK++; |
7889fe52 |
593 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e |
594 | while (MARK <= SP) { |
595 | if (!do_print(*MARK, fp)) |
596 | break; |
597 | MARK++; |
598 | if (MARK <= SP) { |
7889fe52 |
599 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e |
600 | MARK--; |
601 | break; |
602 | } |
603 | } |
604 | } |
605 | } |
606 | else { |
607 | while (MARK <= SP) { |
608 | if (!do_print(*MARK, fp)) |
609 | break; |
610 | MARK++; |
611 | } |
612 | } |
613 | if (MARK <= SP) |
614 | goto just_say_no; |
615 | else { |
7889fe52 |
616 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
617 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
a0d0e21e |
618 | goto just_say_no; |
619 | |
620 | if (IoFLAGS(io) & IOf_FLUSH) |
760ac839 |
621 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e |
622 | goto just_say_no; |
623 | } |
624 | } |
625 | SP = ORIGMARK; |
3280af22 |
626 | PUSHs(&PL_sv_yes); |
a0d0e21e |
627 | RETURN; |
628 | |
629 | just_say_no: |
630 | SP = ORIGMARK; |
3280af22 |
631 | PUSHs(&PL_sv_undef); |
a0d0e21e |
632 | RETURN; |
633 | } |
634 | |
635 | PP(pp_rv2av) |
636 | { |
f5284f61 |
637 | djSP; dTOPss; |
a0d0e21e |
638 | AV *av; |
639 | |
640 | if (SvROK(sv)) { |
641 | wasref: |
f5284f61 |
642 | tryAMAGICunDEREF(to_av); |
643 | |
a0d0e21e |
644 | av = (AV*)SvRV(sv); |
645 | if (SvTYPE(av) != SVt_PVAV) |
cea2e8a9 |
646 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a |
647 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
648 | SETs((SV*)av); |
a0d0e21e |
649 | RETURN; |
650 | } |
78f9721b |
651 | else if (LVRET) { |
652 | if (GIMME == G_SCALAR) |
653 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); |
654 | SETs((SV*)av); |
655 | RETURN; |
656 | } |
a0d0e21e |
657 | } |
658 | else { |
659 | if (SvTYPE(sv) == SVt_PVAV) { |
660 | av = (AV*)sv; |
533c011a |
661 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
662 | SETs((SV*)av); |
a0d0e21e |
663 | RETURN; |
664 | } |
78f9721b |
665 | else if (LVRET) { |
666 | if (GIMME == G_SCALAR) |
667 | Perl_croak(aTHX_ "Can't return array to lvalue" |
668 | " scalar context"); |
669 | SETs((SV*)av); |
670 | RETURN; |
671 | } |
a0d0e21e |
672 | } |
673 | else { |
67955e0c |
674 | GV *gv; |
1c846c1f |
675 | |
a0d0e21e |
676 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
677 | char *sym; |
c9d5ac95 |
678 | STRLEN len; |
748a9306 |
679 | |
a0d0e21e |
680 | if (SvGMAGICAL(sv)) { |
681 | mg_get(sv); |
682 | if (SvROK(sv)) |
683 | goto wasref; |
684 | } |
685 | if (!SvOK(sv)) { |
533c011a |
686 | if (PL_op->op_flags & OPf_REF || |
687 | PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
688 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 |
689 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 |
690 | report_uninit(); |
f5284f61 |
691 | if (GIMME == G_ARRAY) { |
c2444246 |
692 | (void)POPs; |
4633a7c4 |
693 | RETURN; |
f5284f61 |
694 | } |
695 | RETSETUNDEF; |
a0d0e21e |
696 | } |
c9d5ac95 |
697 | sym = SvPV(sv,len); |
35cd451c |
698 | if ((PL_op->op_flags & OPf_SPECIAL) && |
699 | !(PL_op->op_flags & OPf_MOD)) |
700 | { |
701 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV); |
c9d5ac95 |
702 | if (!gv |
703 | && (!is_gv_magical(sym,len,0) |
704 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV)))) |
705 | { |
35cd451c |
706 | RETSETUNDEF; |
c9d5ac95 |
707 | } |
35cd451c |
708 | } |
709 | else { |
710 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
711 | DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); |
35cd451c |
712 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
713 | } |
714 | } |
715 | else { |
67955e0c |
716 | gv = (GV*)sv; |
a0d0e21e |
717 | } |
67955e0c |
718 | av = GvAVn(gv); |
533c011a |
719 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c |
720 | av = save_ary(gv); |
533c011a |
721 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
722 | SETs((SV*)av); |
a0d0e21e |
723 | RETURN; |
724 | } |
78f9721b |
725 | else if (LVRET) { |
726 | if (GIMME == G_SCALAR) |
727 | Perl_croak(aTHX_ "Can't return array to lvalue" |
728 | " scalar context"); |
729 | SETs((SV*)av); |
730 | RETURN; |
731 | } |
a0d0e21e |
732 | } |
733 | } |
734 | |
735 | if (GIMME == G_ARRAY) { |
736 | I32 maxarg = AvFILL(av) + 1; |
c2444246 |
737 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f |
738 | EXTEND(SP, maxarg); |
93965878 |
739 | if (SvRMAGICAL(av)) { |
1c846c1f |
740 | U32 i; |
93965878 |
741 | for (i=0; i < maxarg; i++) { |
742 | SV **svp = av_fetch(av, i, FALSE); |
3280af22 |
743 | SP[i+1] = (svp) ? *svp : &PL_sv_undef; |
93965878 |
744 | } |
1c846c1f |
745 | } |
93965878 |
746 | else { |
747 | Copy(AvARRAY(av), SP+1, maxarg, SV*); |
748 | } |
a0d0e21e |
749 | SP += maxarg; |
750 | } |
751 | else { |
752 | dTARGET; |
753 | I32 maxarg = AvFILL(av) + 1; |
f5284f61 |
754 | SETi(maxarg); |
a0d0e21e |
755 | } |
756 | RETURN; |
757 | } |
758 | |
759 | PP(pp_rv2hv) |
760 | { |
4e35701f |
761 | djSP; dTOPss; |
a0d0e21e |
762 | HV *hv; |
763 | |
764 | if (SvROK(sv)) { |
765 | wasref: |
f5284f61 |
766 | tryAMAGICunDEREF(to_hv); |
767 | |
a0d0e21e |
768 | hv = (HV*)SvRV(sv); |
c750a3ec |
769 | if (SvTYPE(hv) != SVt_PVHV && SvTYPE(hv) != SVt_PVAV) |
cea2e8a9 |
770 | DIE(aTHX_ "Not a HASH reference"); |
533c011a |
771 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
772 | SETs((SV*)hv); |
773 | RETURN; |
774 | } |
78f9721b |
775 | else if (LVRET) { |
776 | if (GIMME == G_SCALAR) |
777 | Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); |
778 | SETs((SV*)hv); |
779 | RETURN; |
780 | } |
a0d0e21e |
781 | } |
782 | else { |
c750a3ec |
783 | if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) { |
a0d0e21e |
784 | hv = (HV*)sv; |
533c011a |
785 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
786 | SETs((SV*)hv); |
787 | RETURN; |
788 | } |
78f9721b |
789 | else if (LVRET) { |
790 | if (GIMME == G_SCALAR) |
791 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
792 | " scalar context"); |
793 | SETs((SV*)hv); |
794 | RETURN; |
795 | } |
a0d0e21e |
796 | } |
797 | else { |
67955e0c |
798 | GV *gv; |
1c846c1f |
799 | |
a0d0e21e |
800 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
801 | char *sym; |
c9d5ac95 |
802 | STRLEN len; |
748a9306 |
803 | |
a0d0e21e |
804 | if (SvGMAGICAL(sv)) { |
805 | mg_get(sv); |
806 | if (SvROK(sv)) |
807 | goto wasref; |
808 | } |
809 | if (!SvOK(sv)) { |
533c011a |
810 | if (PL_op->op_flags & OPf_REF || |
811 | PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
812 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 |
813 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 |
814 | report_uninit(); |
4633a7c4 |
815 | if (GIMME == G_ARRAY) { |
816 | SP--; |
817 | RETURN; |
818 | } |
a0d0e21e |
819 | RETSETUNDEF; |
820 | } |
c9d5ac95 |
821 | sym = SvPV(sv,len); |
35cd451c |
822 | if ((PL_op->op_flags & OPf_SPECIAL) && |
823 | !(PL_op->op_flags & OPf_MOD)) |
824 | { |
825 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV); |
c9d5ac95 |
826 | if (!gv |
827 | && (!is_gv_magical(sym,len,0) |
828 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV)))) |
829 | { |
35cd451c |
830 | RETSETUNDEF; |
c9d5ac95 |
831 | } |
35cd451c |
832 | } |
833 | else { |
834 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
835 | DIE(aTHX_ PL_no_symref, sym, "a HASH"); |
35cd451c |
836 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
837 | } |
838 | } |
839 | else { |
67955e0c |
840 | gv = (GV*)sv; |
a0d0e21e |
841 | } |
67955e0c |
842 | hv = GvHVn(gv); |
533c011a |
843 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c |
844 | hv = save_hash(gv); |
533c011a |
845 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
846 | SETs((SV*)hv); |
847 | RETURN; |
848 | } |
78f9721b |
849 | else if (LVRET) { |
850 | if (GIMME == G_SCALAR) |
851 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
852 | " scalar context"); |
853 | SETs((SV*)hv); |
854 | RETURN; |
855 | } |
a0d0e21e |
856 | } |
857 | } |
858 | |
859 | if (GIMME == G_ARRAY) { /* array wanted */ |
3280af22 |
860 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 |
861 | return do_kv(); |
a0d0e21e |
862 | } |
863 | else { |
864 | dTARGET; |
4b154ab5 |
865 | if (SvTYPE(hv) == SVt_PVAV) |
866 | hv = avhv_keys((AV*)hv); |
b9c39e73 |
867 | if (HvFILL(hv)) |
57def98f |
868 | Perl_sv_setpvf(aTHX_ TARG, "%"IVdf"/%"IVdf, |
869 | (IV)HvFILL(hv), (IV)HvMAX(hv) + 1); |
a0d0e21e |
870 | else |
871 | sv_setiv(TARG, 0); |
c750a3ec |
872 | |
a0d0e21e |
873 | SETTARG; |
874 | RETURN; |
875 | } |
876 | } |
877 | |
10c8fecd |
878 | STATIC int |
879 | S_do_maybe_phash(pTHX_ AV *ary, SV **lelem, SV **firstlelem, SV **relem, |
880 | SV **lastrelem) |
881 | { |
882 | OP *leftop; |
10c8fecd |
883 | I32 i; |
884 | |
885 | leftop = ((BINOP*)PL_op)->op_last; |
886 | assert(leftop); |
887 | assert(leftop->op_type == OP_NULL && leftop->op_targ == OP_LIST); |
888 | leftop = ((LISTOP*)leftop)->op_first; |
889 | assert(leftop); |
890 | /* Skip PUSHMARK and each element already assigned to. */ |
891 | for (i = lelem - firstlelem; i > 0; i--) { |
892 | leftop = leftop->op_sibling; |
893 | assert(leftop); |
894 | } |
895 | if (leftop->op_type != OP_RV2HV) |
896 | return 0; |
897 | |
898 | /* pseudohash */ |
899 | if (av_len(ary) > 0) |
900 | av_fill(ary, 0); /* clear all but the fields hash */ |
901 | if (lastrelem >= relem) { |
902 | while (relem < lastrelem) { /* gobble up all the rest */ |
903 | SV *tmpstr; |
904 | assert(relem[0]); |
905 | assert(relem[1]); |
906 | /* Avoid a memory leak when avhv_store_ent dies. */ |
907 | tmpstr = sv_newmortal(); |
908 | sv_setsv(tmpstr,relem[1]); /* value */ |
909 | relem[1] = tmpstr; |
910 | if (avhv_store_ent(ary,relem[0],tmpstr,0)) |
d16e9ed9 |
911 | (void)SvREFCNT_inc(tmpstr); |
10c8fecd |
912 | if (SvMAGICAL(ary) != 0 && SvSMAGICAL(tmpstr)) |
913 | mg_set(tmpstr); |
914 | relem += 2; |
915 | TAINT_NOT; |
916 | } |
917 | } |
918 | if (relem == lastrelem) |
919 | return 1; |
920 | return 2; |
921 | } |
922 | |
923 | STATIC void |
924 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) |
925 | { |
926 | if (*relem) { |
927 | SV *tmpstr; |
928 | if (ckWARN(WARN_MISC)) { |
929 | if (relem == firstrelem && |
930 | SvROK(*relem) && |
931 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || |
932 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) |
933 | { |
934 | Perl_warner(aTHX_ WARN_MISC, |
935 | "Reference found where even-sized list expected"); |
936 | } |
937 | else |
938 | Perl_warner(aTHX_ WARN_MISC, |
939 | "Odd number of elements in hash assignment"); |
940 | } |
941 | if (SvTYPE(hash) == SVt_PVAV) { |
942 | /* pseudohash */ |
943 | tmpstr = sv_newmortal(); |
944 | if (avhv_store_ent((AV*)hash,*relem,tmpstr,0)) |
d16e9ed9 |
945 | (void)SvREFCNT_inc(tmpstr); |
10c8fecd |
946 | if (SvMAGICAL(hash) && SvSMAGICAL(tmpstr)) |
947 | mg_set(tmpstr); |
948 | } |
949 | else { |
950 | HE *didstore; |
951 | tmpstr = NEWSV(29,0); |
952 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
953 | if (SvMAGICAL(hash)) { |
954 | if (SvSMAGICAL(tmpstr)) |
955 | mg_set(tmpstr); |
956 | if (!didstore) |
957 | sv_2mortal(tmpstr); |
958 | } |
959 | } |
960 | TAINT_NOT; |
961 | } |
962 | } |
963 | |
a0d0e21e |
964 | PP(pp_aassign) |
965 | { |
4e35701f |
966 | djSP; |
3280af22 |
967 | SV **lastlelem = PL_stack_sp; |
968 | SV **lastrelem = PL_stack_base + POPMARK; |
969 | SV **firstrelem = PL_stack_base + POPMARK + 1; |
a0d0e21e |
970 | SV **firstlelem = lastrelem + 1; |
971 | |
972 | register SV **relem; |
973 | register SV **lelem; |
974 | |
975 | register SV *sv; |
976 | register AV *ary; |
977 | |
54310121 |
978 | I32 gimme; |
a0d0e21e |
979 | HV *hash; |
980 | I32 i; |
981 | int magic; |
982 | |
3280af22 |
983 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
a0d0e21e |
984 | |
985 | /* If there's a common identifier on both sides we have to take |
986 | * special care that assigning the identifier on the left doesn't |
987 | * clobber a value on the right that's used later in the list. |
988 | */ |
10c8fecd |
989 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 |
990 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd |
991 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
992 | /*SUPPRESS 560*/ |
155aba94 |
993 | if ((sv = *relem)) { |
a1f49e72 |
994 | TAINT_NOT; /* Each item is independent */ |
10c8fecd |
995 | *relem = sv_mortalcopy(sv); |
a1f49e72 |
996 | } |
10c8fecd |
997 | } |
a0d0e21e |
998 | } |
999 | |
1000 | relem = firstrelem; |
1001 | lelem = firstlelem; |
1002 | ary = Null(AV*); |
1003 | hash = Null(HV*); |
10c8fecd |
1004 | |
a0d0e21e |
1005 | while (lelem <= lastlelem) { |
bbce6d69 |
1006 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e |
1007 | sv = *lelem++; |
1008 | switch (SvTYPE(sv)) { |
1009 | case SVt_PVAV: |
1010 | ary = (AV*)sv; |
748a9306 |
1011 | magic = SvMAGICAL(ary) != 0; |
10c8fecd |
1012 | if (PL_op->op_private & OPpASSIGN_HASH) { |
1013 | switch (do_maybe_phash(ary, lelem, firstlelem, relem, |
1014 | lastrelem)) |
1015 | { |
1016 | case 0: |
1017 | goto normal_array; |
1018 | case 1: |
1019 | do_oddball((HV*)ary, relem, firstrelem); |
1020 | } |
1021 | relem = lastrelem + 1; |
1022 | break; |
1023 | } |
1024 | normal_array: |
a0d0e21e |
1025 | av_clear(ary); |
7e42bd57 |
1026 | av_extend(ary, lastrelem - relem); |
a0d0e21e |
1027 | i = 0; |
1028 | while (relem <= lastrelem) { /* gobble up all the rest */ |
5117ca91 |
1029 | SV **didstore; |
a0d0e21e |
1030 | sv = NEWSV(28,0); |
1031 | assert(*relem); |
1032 | sv_setsv(sv,*relem); |
1033 | *(relem++) = sv; |
5117ca91 |
1034 | didstore = av_store(ary,i++,sv); |
1035 | if (magic) { |
fb73857a |
1036 | if (SvSMAGICAL(sv)) |
1037 | mg_set(sv); |
5117ca91 |
1038 | if (!didstore) |
8127e0e3 |
1039 | sv_2mortal(sv); |
5117ca91 |
1040 | } |
bbce6d69 |
1041 | TAINT_NOT; |
a0d0e21e |
1042 | } |
1043 | break; |
10c8fecd |
1044 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e |
1045 | SV *tmpstr; |
1046 | |
1047 | hash = (HV*)sv; |
748a9306 |
1048 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e |
1049 | hv_clear(hash); |
1050 | |
1051 | while (relem < lastrelem) { /* gobble up all the rest */ |
5117ca91 |
1052 | HE *didstore; |
4633a7c4 |
1053 | if (*relem) |
a0d0e21e |
1054 | sv = *(relem++); |
4633a7c4 |
1055 | else |
3280af22 |
1056 | sv = &PL_sv_no, relem++; |
a0d0e21e |
1057 | tmpstr = NEWSV(29,0); |
1058 | if (*relem) |
1059 | sv_setsv(tmpstr,*relem); /* value */ |
1060 | *(relem++) = tmpstr; |
5117ca91 |
1061 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1062 | if (magic) { |
fb73857a |
1063 | if (SvSMAGICAL(tmpstr)) |
1064 | mg_set(tmpstr); |
5117ca91 |
1065 | if (!didstore) |
8127e0e3 |
1066 | sv_2mortal(tmpstr); |
5117ca91 |
1067 | } |
bbce6d69 |
1068 | TAINT_NOT; |
8e07c86e |
1069 | } |
6a0deba8 |
1070 | if (relem == lastrelem) { |
10c8fecd |
1071 | do_oddball(hash, relem, firstrelem); |
6a0deba8 |
1072 | relem++; |
1930e939 |
1073 | } |
a0d0e21e |
1074 | } |
1075 | break; |
1076 | default: |
6fc92669 |
1077 | if (SvIMMORTAL(sv)) { |
1078 | if (relem <= lastrelem) |
1079 | relem++; |
1080 | break; |
a0d0e21e |
1081 | } |
1082 | if (relem <= lastrelem) { |
1083 | sv_setsv(sv, *relem); |
1084 | *(relem++) = sv; |
1085 | } |
1086 | else |
3280af22 |
1087 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e |
1088 | SvSETMAGIC(sv); |
1089 | break; |
1090 | } |
1091 | } |
3280af22 |
1092 | if (PL_delaymagic & ~DM_DELAY) { |
1093 | if (PL_delaymagic & DM_UID) { |
a0d0e21e |
1094 | #ifdef HAS_SETRESUID |
b28d0864 |
1095 | (void)setresuid(PL_uid,PL_euid,(Uid_t)-1); |
56febc5e |
1096 | #else |
1097 | # ifdef HAS_SETREUID |
3280af22 |
1098 | (void)setreuid(PL_uid,PL_euid); |
56febc5e |
1099 | # else |
1100 | # ifdef HAS_SETRUID |
b28d0864 |
1101 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1102 | (void)setruid(PL_uid); |
1103 | PL_delaymagic &= ~DM_RUID; |
a0d0e21e |
1104 | } |
56febc5e |
1105 | # endif /* HAS_SETRUID */ |
1106 | # ifdef HAS_SETEUID |
b28d0864 |
1107 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
1108 | (void)seteuid(PL_uid); |
1109 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e |
1110 | } |
56febc5e |
1111 | # endif /* HAS_SETEUID */ |
b28d0864 |
1112 | if (PL_delaymagic & DM_UID) { |
1113 | if (PL_uid != PL_euid) |
cea2e8a9 |
1114 | DIE(aTHX_ "No setreuid available"); |
b28d0864 |
1115 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e |
1116 | } |
56febc5e |
1117 | # endif /* HAS_SETREUID */ |
1118 | #endif /* HAS_SETRESUID */ |
d8eceb89 |
1119 | PL_uid = PerlProc_getuid(); |
1120 | PL_euid = PerlProc_geteuid(); |
a0d0e21e |
1121 | } |
3280af22 |
1122 | if (PL_delaymagic & DM_GID) { |
a0d0e21e |
1123 | #ifdef HAS_SETRESGID |
b28d0864 |
1124 | (void)setresgid(PL_gid,PL_egid,(Gid_t)-1); |
56febc5e |
1125 | #else |
1126 | # ifdef HAS_SETREGID |
3280af22 |
1127 | (void)setregid(PL_gid,PL_egid); |
56febc5e |
1128 | # else |
1129 | # ifdef HAS_SETRGID |
b28d0864 |
1130 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1131 | (void)setrgid(PL_gid); |
1132 | PL_delaymagic &= ~DM_RGID; |
a0d0e21e |
1133 | } |
56febc5e |
1134 | # endif /* HAS_SETRGID */ |
1135 | # ifdef HAS_SETEGID |
b28d0864 |
1136 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
1137 | (void)setegid(PL_gid); |
1138 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e |
1139 | } |
56febc5e |
1140 | # endif /* HAS_SETEGID */ |
b28d0864 |
1141 | if (PL_delaymagic & DM_GID) { |
1142 | if (PL_gid != PL_egid) |
cea2e8a9 |
1143 | DIE(aTHX_ "No setregid available"); |
b28d0864 |
1144 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e |
1145 | } |
56febc5e |
1146 | # endif /* HAS_SETREGID */ |
1147 | #endif /* HAS_SETRESGID */ |
d8eceb89 |
1148 | PL_gid = PerlProc_getgid(); |
1149 | PL_egid = PerlProc_getegid(); |
a0d0e21e |
1150 | } |
3280af22 |
1151 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e |
1152 | } |
3280af22 |
1153 | PL_delaymagic = 0; |
54310121 |
1154 | |
1155 | gimme = GIMME_V; |
1156 | if (gimme == G_VOID) |
1157 | SP = firstrelem - 1; |
1158 | else if (gimme == G_SCALAR) { |
1159 | dTARGET; |
1160 | SP = firstrelem; |
1161 | SETi(lastrelem - firstrelem + 1); |
1162 | } |
1163 | else { |
a0d0e21e |
1164 | if (ary || hash) |
1165 | SP = lastrelem; |
1166 | else |
1167 | SP = firstrelem + (lastlelem - firstlelem); |
0c8c7a05 |
1168 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc |
1169 | while (relem <= SP) |
3280af22 |
1170 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e |
1171 | } |
54310121 |
1172 | RETURN; |
a0d0e21e |
1173 | } |
1174 | |
8782bef2 |
1175 | PP(pp_qr) |
1176 | { |
1177 | djSP; |
1178 | register PMOP *pm = cPMOP; |
1179 | SV *rv = sv_newmortal(); |
57668c4d |
1180 | SV *sv = newSVrv(rv, "Regexp"); |
8782bef2 |
1181 | sv_magic(sv,(SV*)ReREFCNT_inc(pm->op_pmregexp),'r',0,0); |
1182 | RETURNX(PUSHs(rv)); |
1183 | } |
1184 | |
a0d0e21e |
1185 | PP(pp_match) |
1186 | { |
4e35701f |
1187 | djSP; dTARG; |
a0d0e21e |
1188 | register PMOP *pm = cPMOP; |
1189 | register char *t; |
1190 | register char *s; |
1191 | char *strend; |
1192 | I32 global; |
f722798b |
1193 | I32 r_flags = REXEC_CHECKED; |
1194 | char *truebase; /* Start of string */ |
d9f97599 |
1195 | register REGEXP *rx = pm->op_pmregexp; |
b3eb6a9b |
1196 | bool rxtainted; |
a0d0e21e |
1197 | I32 gimme = GIMME; |
1198 | STRLEN len; |
748a9306 |
1199 | I32 minmatch = 0; |
3280af22 |
1200 | I32 oldsave = PL_savestack_ix; |
f86702cc |
1201 | I32 update_minmatch = 1; |
e60df1fa |
1202 | I32 had_zerolen = 0; |
a0d0e21e |
1203 | |
533c011a |
1204 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
1205 | TARG = POPs; |
1206 | else { |
54b9620d |
1207 | TARG = DEFSV; |
a0d0e21e |
1208 | EXTEND(SP,1); |
1209 | } |
ffc61ed2 |
1210 | PL_reg_sv = TARG; |
c277df42 |
1211 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e |
1212 | s = SvPV(TARG, len); |
1213 | strend = s + len; |
1214 | if (!s) |
2269b42e |
1215 | DIE(aTHX_ "panic: pp_match"); |
b3eb6a9b |
1216 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 |
1217 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba |
1218 | TAINT_NOT; |
a0d0e21e |
1219 | |
48c036b1 |
1220 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 |
1221 | failure: |
a0d0e21e |
1222 | if (gimme == G_ARRAY) |
1223 | RETURN; |
1224 | RETPUSHNO; |
1225 | } |
1226 | |
3280af22 |
1227 | if (!rx->prelen && PL_curpm) { |
1228 | pm = PL_curpm; |
d9f97599 |
1229 | rx = pm->op_pmregexp; |
a0d0e21e |
1230 | } |
d9f97599 |
1231 | if (rx->minlen > len) goto failure; |
c277df42 |
1232 | |
a0d0e21e |
1233 | truebase = t = s; |
ad94a511 |
1234 | |
1235 | /* XXXX What part of this is needed with true \G-support? */ |
155aba94 |
1236 | if ((global = pm->op_pmflags & PMf_GLOBAL)) { |
cf93c79d |
1237 | rx->startp[0] = -1; |
a0d0e21e |
1238 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
1239 | MAGIC* mg = mg_find(TARG, 'g'); |
565764a8 |
1240 | if (mg && mg->mg_len >= 0) { |
b7a35066 |
1241 | if (!(rx->reganch & ROPT_GPOS_SEEN)) |
1c846c1f |
1242 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e |
1243 | else if (rx->reganch & ROPT_ANCH_GPOS) { |
1244 | r_flags |= REXEC_IGNOREPOS; |
1c846c1f |
1245 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e |
1246 | } |
748a9306 |
1247 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc |
1248 | update_minmatch = 0; |
748a9306 |
1249 | } |
a0d0e21e |
1250 | } |
1251 | } |
0ef3e39e |
1252 | if ((gimme != G_ARRAY && !global && rx->nparens) |
1253 | || SvTEMP(TARG) || PL_sawampersand) |
1254 | r_flags |= REXEC_COPY_STR; |
1c846c1f |
1255 | if (SvSCREAM(TARG)) |
22e551b9 |
1256 | r_flags |= REXEC_SCREAM; |
1257 | |
a0d0e21e |
1258 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 |
1259 | SAVEINT(PL_multiline); |
1260 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; |
a0d0e21e |
1261 | } |
1262 | |
1263 | play_it_again: |
cf93c79d |
1264 | if (global && rx->startp[0] != -1) { |
1265 | t = s = rx->endp[0] + truebase; |
d9f97599 |
1266 | if ((s + rx->minlen) > strend) |
a0d0e21e |
1267 | goto nope; |
f86702cc |
1268 | if (update_minmatch++) |
e60df1fa |
1269 | minmatch = had_zerolen; |
a0d0e21e |
1270 | } |
60aeb6fd |
1271 | if (rx->reganch & RE_USE_INTUIT && |
1272 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { |
f722798b |
1273 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1274 | |
1275 | if (!s) |
1276 | goto nope; |
1277 | if ( (rx->reganch & ROPT_CHECK_ALL) |
1c846c1f |
1278 | && !PL_sawampersand |
f722798b |
1279 | && ((rx->reganch & ROPT_NOSCAN) |
1280 | || !((rx->reganch & RE_INTUIT_TAIL) |
05b4157f |
1281 | && (r_flags & REXEC_SCREAM))) |
1282 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ |
f722798b |
1283 | goto yup; |
a0d0e21e |
1284 | } |
cea2e8a9 |
1285 | if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 |
1286 | { |
3280af22 |
1287 | PL_curpm = pm; |
a0d0e21e |
1288 | if (pm->op_pmflags & PMf_ONCE) |
48c036b1 |
1289 | pm->op_pmdynflags |= PMdf_USED; |
a0d0e21e |
1290 | goto gotcha; |
1291 | } |
1292 | else |
1293 | goto ret_no; |
1294 | /*NOTREACHED*/ |
1295 | |
1296 | gotcha: |
72311751 |
1297 | if (rxtainted) |
1298 | RX_MATCH_TAINTED_on(rx); |
1299 | TAINT_IF(RX_MATCH_TAINTED(rx)); |
a0d0e21e |
1300 | if (gimme == G_ARRAY) { |
ffc61ed2 |
1301 | I32 nparens, i, len; |
a0d0e21e |
1302 | |
ffc61ed2 |
1303 | nparens = rx->nparens; |
1304 | if (global && !nparens) |
a0d0e21e |
1305 | i = 1; |
1306 | else |
1307 | i = 0; |
c277df42 |
1308 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 |
1309 | EXTEND(SP, nparens + i); |
1310 | EXTEND_MORTAL(nparens + i); |
1311 | for (i = !i; i <= nparens; i++) { |
a0d0e21e |
1312 | PUSHs(sv_newmortal()); |
1313 | /*SUPPRESS 560*/ |
cf93c79d |
1314 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
1315 | len = rx->endp[i] - rx->startp[i]; |
1316 | s = rx->startp[i] + truebase; |
a0d0e21e |
1317 | sv_setpvn(*SP, s, len); |
ffc61ed2 |
1318 | if (DO_UTF8(TARG)) |
a197cbdd |
1319 | SvUTF8_on(*SP); |
a0d0e21e |
1320 | } |
1321 | } |
1322 | if (global) { |
cf93c79d |
1323 | had_zerolen = (rx->startp[0] != -1 |
1324 | && rx->startp[0] == rx->endp[0]); |
c277df42 |
1325 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d |
1326 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e |
1327 | goto play_it_again; |
1328 | } |
ffc61ed2 |
1329 | else if (!nparens) |
bde848c5 |
1330 | XPUSHs(&PL_sv_yes); |
4633a7c4 |
1331 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1332 | RETURN; |
1333 | } |
1334 | else { |
1335 | if (global) { |
1336 | MAGIC* mg = 0; |
1337 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
1338 | mg = mg_find(TARG, 'g'); |
1339 | if (!mg) { |
1340 | sv_magic(TARG, (SV*)0, 'g', Nullch, 0); |
1341 | mg = mg_find(TARG, 'g'); |
1342 | } |
cf93c79d |
1343 | if (rx->startp[0] != -1) { |
1344 | mg->mg_len = rx->endp[0]; |
d9f97599 |
1345 | if (rx->startp[0] == rx->endp[0]) |
748a9306 |
1346 | mg->mg_flags |= MGf_MINMATCH; |
1347 | else |
1348 | mg->mg_flags &= ~MGf_MINMATCH; |
1349 | } |
a0d0e21e |
1350 | } |
4633a7c4 |
1351 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1352 | RETPUSHYES; |
1353 | } |
1354 | |
f722798b |
1355 | yup: /* Confirmed by INTUIT */ |
72311751 |
1356 | if (rxtainted) |
1357 | RX_MATCH_TAINTED_on(rx); |
1358 | TAINT_IF(RX_MATCH_TAINTED(rx)); |
3280af22 |
1359 | PL_curpm = pm; |
a0d0e21e |
1360 | if (pm->op_pmflags & PMf_ONCE) |
48c036b1 |
1361 | pm->op_pmdynflags |= PMdf_USED; |
cf93c79d |
1362 | if (RX_MATCH_COPIED(rx)) |
1363 | Safefree(rx->subbeg); |
1364 | RX_MATCH_COPIED_off(rx); |
1365 | rx->subbeg = Nullch; |
a0d0e21e |
1366 | if (global) { |
d9f97599 |
1367 | rx->subbeg = truebase; |
cf93c79d |
1368 | rx->startp[0] = s - truebase; |
60aeb6fd |
1369 | if (DO_UTF8(PL_reg_sv)) { |
1370 | char *t = (char*)utf8_hop((U8*)s, rx->minlen); |
1371 | rx->endp[0] = t - truebase; |
1372 | } |
1373 | else { |
1374 | rx->endp[0] = s - truebase + rx->minlen; |
1375 | } |
cf93c79d |
1376 | rx->sublen = strend - truebase; |
a0d0e21e |
1377 | goto gotcha; |
1c846c1f |
1378 | } |
3280af22 |
1379 | if (PL_sawampersand) { |
cf93c79d |
1380 | I32 off; |
a0d0e21e |
1381 | |
cf93c79d |
1382 | rx->subbeg = savepvn(t, strend - t); |
1383 | rx->sublen = strend - t; |
1384 | RX_MATCH_COPIED_on(rx); |
1385 | off = rx->startp[0] = s - t; |
f722798b |
1386 | rx->endp[0] = off + rx->minlen; |
cf93c79d |
1387 | } |
1388 | else { /* startp/endp are used by @- @+. */ |
1389 | rx->startp[0] = s - truebase; |
f722798b |
1390 | rx->endp[0] = s - truebase + rx->minlen; |
a0d0e21e |
1391 | } |
fc19f8d0 |
1392 | rx->nparens = rx->lastparen = 0; /* used by @- and @+ */ |
4633a7c4 |
1393 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1394 | RETPUSHYES; |
1395 | |
1396 | nope: |
a0d0e21e |
1397 | ret_no: |
c90c0ff4 |
1398 | if (global && !(pm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e |
1399 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
1400 | MAGIC* mg = mg_find(TARG, 'g'); |
1401 | if (mg) |
565764a8 |
1402 | mg->mg_len = -1; |
a0d0e21e |
1403 | } |
1404 | } |
4633a7c4 |
1405 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1406 | if (gimme == G_ARRAY) |
1407 | RETURN; |
1408 | RETPUSHNO; |
1409 | } |
1410 | |
1411 | OP * |
864dbfa3 |
1412 | Perl_do_readline(pTHX) |
a0d0e21e |
1413 | { |
1414 | dSP; dTARGETSTACKED; |
1415 | register SV *sv; |
1416 | STRLEN tmplen = 0; |
1417 | STRLEN offset; |
760ac839 |
1418 | PerlIO *fp; |
3280af22 |
1419 | register IO *io = GvIO(PL_last_in_gv); |
533c011a |
1420 | register I32 type = PL_op->op_type; |
54310121 |
1421 | I32 gimme = GIMME_V; |
e79b0511 |
1422 | MAGIC *mg; |
a0d0e21e |
1423 | |
155aba94 |
1424 | if ((mg = SvTIED_mg((SV*)PL_last_in_gv, 'q'))) { |
e79b0511 |
1425 | PUSHMARK(SP); |
33c27489 |
1426 | XPUSHs(SvTIED_obj((SV*)PL_last_in_gv, mg)); |
e79b0511 |
1427 | PUTBACK; |
1428 | ENTER; |
864dbfa3 |
1429 | call_method("READLINE", gimme); |
e79b0511 |
1430 | LEAVE; |
1431 | SPAGAIN; |
54310121 |
1432 | if (gimme == G_SCALAR) |
1433 | SvSetMagicSV_nosteal(TARG, TOPs); |
e79b0511 |
1434 | RETURN; |
1435 | } |
a0d0e21e |
1436 | fp = Nullfp; |
1437 | if (io) { |
1438 | fp = IoIFP(io); |
1439 | if (!fp) { |
1440 | if (IoFLAGS(io) & IOf_ARGV) { |
1441 | if (IoFLAGS(io) & IOf_START) { |
a0d0e21e |
1442 | IoLINES(io) = 0; |
3280af22 |
1443 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 |
1444 | IoFLAGS(io) &= ~IOf_START; |
9d116dd7 |
1445 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 |
1446 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1447 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d |
1448 | fp = IoIFP(io); |
1449 | goto have_fp; |
a0d0e21e |
1450 | } |
1451 | } |
3280af22 |
1452 | fp = nextargv(PL_last_in_gv); |
a0d0e21e |
1453 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 |
1454 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e |
1455 | } |
1456 | } |
0d44d22b |
1457 | else if (type == OP_GLOB) |
1458 | fp = Perl_start_glob(aTHX_ POPs, io); |
a0d0e21e |
1459 | } |
1460 | else if (type == OP_GLOB) |
1461 | SP--; |
af8c498a |
1462 | else if (ckWARN(WARN_IO) /* stdout/stderr or other write fh */ |
9f37169a |
1463 | && (IoTYPE(io) == IoTYPE_WRONLY || fp == PerlIO_stdout() |
af8c498a |
1464 | || fp == PerlIO_stderr())) |
4c80c0b2 |
1465 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a0d0e21e |
1466 | } |
1467 | if (!fp) { |
790090df |
1468 | if (ckWARN2(WARN_GLOB, WARN_CLOSED) |
1469 | && (!io || !(IoFLAGS(io) & IOf_START))) { |
3f4520fe |
1470 | if (type == OP_GLOB) |
e476b1b5 |
1471 | Perl_warner(aTHX_ WARN_GLOB, |
af8c498a |
1472 | "glob failed (can't start child: %s)", |
1473 | Strerror(errno)); |
69282e91 |
1474 | else |
bc37a18f |
1475 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe |
1476 | } |
54310121 |
1477 | if (gimme == G_SCALAR) { |
a0d0e21e |
1478 | (void)SvOK_off(TARG); |
1479 | PUSHTARG; |
1480 | } |
1481 | RETURN; |
1482 | } |
a2008d6d |
1483 | have_fp: |
54310121 |
1484 | if (gimme == G_SCALAR) { |
a0d0e21e |
1485 | sv = TARG; |
9607fc9c |
1486 | if (SvROK(sv)) |
1487 | sv_unref(sv); |
a0d0e21e |
1488 | (void)SvUPGRADE(sv, SVt_PV); |
1489 | tmplen = SvLEN(sv); /* remember if already alloced */ |
1490 | if (!tmplen) |
1491 | Sv_Grow(sv, 80); /* try short-buffering it */ |
1492 | if (type == OP_RCATLINE) |
1493 | offset = SvCUR(sv); |
1494 | else |
1495 | offset = 0; |
1496 | } |
54310121 |
1497 | else { |
1498 | sv = sv_2mortal(NEWSV(57, 80)); |
1499 | offset = 0; |
1500 | } |
fbad3eb5 |
1501 | |
3887d568 |
1502 | /* This should not be marked tainted if the fp is marked clean */ |
1503 | #define MAYBE_TAINT_LINE(io, sv) \ |
1504 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ |
1505 | TAINT; \ |
1506 | SvTAINTED_on(sv); \ |
1507 | } |
1508 | |
684bef36 |
1509 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 |
1510 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 |
1511 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba |
1512 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 |
1513 | |
a0d0e21e |
1514 | for (;;) { |
fbad3eb5 |
1515 | if (!sv_gets(sv, fp, offset) |
1516 | && (type == OP_GLOB || SNARF_EOF(gimme, PL_rs, io, sv))) |
1517 | { |
760ac839 |
1518 | PerlIO_clearerr(fp); |
a0d0e21e |
1519 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 |
1520 | fp = nextargv(PL_last_in_gv); |
a0d0e21e |
1521 | if (fp) |
1522 | continue; |
3280af22 |
1523 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e |
1524 | } |
1525 | else if (type == OP_GLOB) { |
e476b1b5 |
1526 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
1527 | Perl_warner(aTHX_ WARN_GLOB, |
4eb79ab5 |
1528 | "glob failed (child exited with status %d%s)", |
894356b3 |
1529 | (int)(STATUS_CURRENT >> 8), |
cf494569 |
1530 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 |
1531 | } |
a0d0e21e |
1532 | } |
54310121 |
1533 | if (gimme == G_SCALAR) { |
a0d0e21e |
1534 | (void)SvOK_off(TARG); |
1535 | PUSHTARG; |
1536 | } |
3887d568 |
1537 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e |
1538 | RETURN; |
1539 | } |
3887d568 |
1540 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e |
1541 | IoLINES(io)++; |
b9fee9ba |
1542 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc |
1543 | SvSETMAGIC(sv); |
a0d0e21e |
1544 | XPUSHs(sv); |
a0d0e21e |
1545 | if (type == OP_GLOB) { |
1546 | char *tmps; |
1547 | |
3280af22 |
1548 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd |
1549 | tmps = SvEND(sv) - 1; |
3280af22 |
1550 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd |
1551 | *tmps = '\0'; |
1552 | SvCUR(sv)--; |
1553 | } |
1554 | } |
a0d0e21e |
1555 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1556 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && |
1557 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) |
1558 | break; |
43384a1a |
1559 | if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e |
1560 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1561 | continue; |
1562 | } |
1563 | } |
54310121 |
1564 | if (gimme == G_ARRAY) { |
a0d0e21e |
1565 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1566 | SvLEN_set(sv, SvCUR(sv)+1); |
1567 | Renew(SvPVX(sv), SvLEN(sv), char); |
1568 | } |
1569 | sv = sv_2mortal(NEWSV(58, 80)); |
1570 | continue; |
1571 | } |
54310121 |
1572 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e |
1573 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1574 | if (SvCUR(sv) < 60) |
1575 | SvLEN_set(sv, 80); |
1576 | else |
1577 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ |
1578 | Renew(SvPVX(sv), SvLEN(sv), char); |
1579 | } |
1580 | RETURN; |
1581 | } |
1582 | } |
1583 | |
1584 | PP(pp_enter) |
1585 | { |
4e35701f |
1586 | djSP; |
c09156bb |
1587 | register PERL_CONTEXT *cx; |
533c011a |
1588 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e |
1589 | |
54310121 |
1590 | if (gimme == -1) { |
1591 | if (cxstack_ix >= 0) |
1592 | gimme = cxstack[cxstack_ix].blk_gimme; |
1593 | else |
1594 | gimme = G_SCALAR; |
1595 | } |
a0d0e21e |
1596 | |
1597 | ENTER; |
1598 | |
1599 | SAVETMPS; |
924508f0 |
1600 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e |
1601 | |
1602 | RETURN; |
1603 | } |
1604 | |
1605 | PP(pp_helem) |
1606 | { |
4e35701f |
1607 | djSP; |
760ac839 |
1608 | HE* he; |
ae77835f |
1609 | SV **svp; |
a0d0e21e |
1610 | SV *keysv = POPs; |
a0d0e21e |
1611 | HV *hv = (HV*)POPs; |
78f9721b |
1612 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a |
1613 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
be6c24e0 |
1614 | SV *sv; |
1c846c1f |
1615 | U32 hash = (SvFAKE(keysv) && SvREADONLY(keysv)) ? SvUVX(keysv) : 0; |
1f5346dc |
1616 | I32 preeminent; |
a0d0e21e |
1617 | |
ae77835f |
1618 | if (SvTYPE(hv) == SVt_PVHV) { |
1f5346dc |
1619 | if (PL_op->op_private & OPpLVAL_INTRO) |
1620 | preeminent = SvRMAGICAL(hv) ? 1 : hv_exists_ent(hv, keysv, 0); |
1c846c1f |
1621 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
97fcbf96 |
1622 | svp = he ? &HeVAL(he) : 0; |
ae77835f |
1623 | } |
1624 | else if (SvTYPE(hv) == SVt_PVAV) { |
0ebe0038 |
1625 | if (PL_op->op_private & OPpLVAL_INTRO) |
cea2e8a9 |
1626 | DIE(aTHX_ "Can't localize pseudo-hash element"); |
1c846c1f |
1627 | svp = avhv_fetch_ent((AV*)hv, keysv, lval && !defer, hash); |
ae77835f |
1628 | } |
c750a3ec |
1629 | else { |
a0d0e21e |
1630 | RETPUSHUNDEF; |
c750a3ec |
1631 | } |
a0d0e21e |
1632 | if (lval) { |
3280af22 |
1633 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 |
1634 | SV* lv; |
1635 | SV* key2; |
2d8e6c8d |
1636 | if (!defer) { |
1637 | STRLEN n_a; |
cea2e8a9 |
1638 | DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); |
2d8e6c8d |
1639 | } |
68dc0745 |
1640 | lv = sv_newmortal(); |
1641 | sv_upgrade(lv, SVt_PVLV); |
1642 | LvTYPE(lv) = 'y'; |
1643 | sv_magic(lv, key2 = newSVsv(keysv), 'y', Nullch, 0); |
1644 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
1645 | LvTARG(lv) = SvREFCNT_inc(hv); |
1646 | LvTARGLEN(lv) = 1; |
1647 | PUSHs(lv); |
1648 | RETURN; |
1649 | } |
533c011a |
1650 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f |
1651 | if (HvNAME(hv) && isGV(*svp)) |
533c011a |
1652 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc |
1653 | else { |
1654 | if (!preeminent) { |
1655 | STRLEN keylen; |
1656 | char *key = SvPV(keysv, keylen); |
57813020 |
1657 | SAVEDELETE(hv, savepvn(key,keylen), keylen); |
a12c0f56 |
1658 | } else |
1f5346dc |
1659 | save_helem(hv, keysv, svp); |
1660 | } |
5f05dabc |
1661 | } |
533c011a |
1662 | else if (PL_op->op_private & OPpDEREF) |
1663 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); |
a0d0e21e |
1664 | } |
3280af22 |
1665 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 |
1666 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1667 | * Pushing the magical RHS on to the stack is useless, since |
1668 | * that magic is soon destined to be misled by the local(), |
1669 | * and thus the later pp_sassign() will fail to mg_get() the |
1670 | * old value. This should also cure problems with delayed |
1671 | * mg_get()s. GSAR 98-07-03 */ |
1672 | if (!lval && SvGMAGICAL(sv)) |
1673 | sv = sv_mortalcopy(sv); |
1674 | PUSHs(sv); |
a0d0e21e |
1675 | RETURN; |
1676 | } |
1677 | |
1678 | PP(pp_leave) |
1679 | { |
4e35701f |
1680 | djSP; |
c09156bb |
1681 | register PERL_CONTEXT *cx; |
a0d0e21e |
1682 | register SV **mark; |
1683 | SV **newsp; |
1684 | PMOP *newpm; |
1685 | I32 gimme; |
1686 | |
533c011a |
1687 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e |
1688 | cx = &cxstack[cxstack_ix]; |
3280af22 |
1689 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e |
1690 | } |
1691 | |
1692 | POPBLOCK(cx,newpm); |
1693 | |
533c011a |
1694 | gimme = OP_GIMME(PL_op, -1); |
54310121 |
1695 | if (gimme == -1) { |
1696 | if (cxstack_ix >= 0) |
1697 | gimme = cxstack[cxstack_ix].blk_gimme; |
1698 | else |
1699 | gimme = G_SCALAR; |
1700 | } |
a0d0e21e |
1701 | |
a1f49e72 |
1702 | TAINT_NOT; |
54310121 |
1703 | if (gimme == G_VOID) |
1704 | SP = newsp; |
1705 | else if (gimme == G_SCALAR) { |
1706 | MARK = newsp + 1; |
1707 | if (MARK <= SP) |
1708 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1709 | *MARK = TOPs; |
1710 | else |
1711 | *MARK = sv_mortalcopy(TOPs); |
a0d0e21e |
1712 | else { |
54310121 |
1713 | MEXTEND(mark,0); |
3280af22 |
1714 | *MARK = &PL_sv_undef; |
a0d0e21e |
1715 | } |
54310121 |
1716 | SP = MARK; |
a0d0e21e |
1717 | } |
54310121 |
1718 | else if (gimme == G_ARRAY) { |
a1f49e72 |
1719 | /* in case LEAVE wipes old return values */ |
1720 | for (mark = newsp + 1; mark <= SP; mark++) { |
1721 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { |
a0d0e21e |
1722 | *mark = sv_mortalcopy(*mark); |
a1f49e72 |
1723 | TAINT_NOT; /* Each item is independent */ |
1724 | } |
1725 | } |
a0d0e21e |
1726 | } |
3280af22 |
1727 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e |
1728 | |
1729 | LEAVE; |
1730 | |
1731 | RETURN; |
1732 | } |
1733 | |
1734 | PP(pp_iter) |
1735 | { |
4e35701f |
1736 | djSP; |
c09156bb |
1737 | register PERL_CONTEXT *cx; |
5f05dabc |
1738 | SV* sv; |
4633a7c4 |
1739 | AV* av; |
1d7c1841 |
1740 | SV **itersvp; |
a0d0e21e |
1741 | |
924508f0 |
1742 | EXTEND(SP, 1); |
a0d0e21e |
1743 | cx = &cxstack[cxstack_ix]; |
6b35e009 |
1744 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 |
1745 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e |
1746 | |
1d7c1841 |
1747 | itersvp = CxITERVAR(cx); |
4633a7c4 |
1748 | av = cx->blk_loop.iterary; |
89ea2908 |
1749 | if (SvTYPE(av) != SVt_PVAV) { |
1750 | /* iterate ($min .. $max) */ |
1751 | if (cx->blk_loop.iterlval) { |
1752 | /* string increment */ |
1753 | register SV* cur = cx->blk_loop.iterlval; |
1754 | STRLEN maxlen; |
1755 | char *max = SvPV((SV*)av, maxlen); |
1756 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
eaa5c2d6 |
1757 | #ifndef USE_THREADS /* don't risk potential race */ |
1d7c1841 |
1758 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 |
1759 | /* safe to reuse old SV */ |
1d7c1841 |
1760 | sv_setsv(*itersvp, cur); |
eaa5c2d6 |
1761 | } |
1c846c1f |
1762 | else |
eaa5c2d6 |
1763 | #endif |
1764 | { |
1765 | /* we need a fresh SV every time so that loop body sees a |
1766 | * completely new SV for closures/references to work as |
1767 | * they used to */ |
1d7c1841 |
1768 | SvREFCNT_dec(*itersvp); |
1769 | *itersvp = newSVsv(cur); |
eaa5c2d6 |
1770 | } |
89ea2908 |
1771 | if (strEQ(SvPVX(cur), max)) |
1772 | sv_setiv(cur, 0); /* terminate next time */ |
1773 | else |
1774 | sv_inc(cur); |
1775 | RETPUSHYES; |
1776 | } |
1777 | RETPUSHNO; |
1778 | } |
1779 | /* integer increment */ |
1780 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) |
1781 | RETPUSHNO; |
7f61b687 |
1782 | |
eaa5c2d6 |
1783 | #ifndef USE_THREADS /* don't risk potential race */ |
1d7c1841 |
1784 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 |
1785 | /* safe to reuse old SV */ |
1d7c1841 |
1786 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 |
1787 | } |
1c846c1f |
1788 | else |
eaa5c2d6 |
1789 | #endif |
1790 | { |
1791 | /* we need a fresh SV every time so that loop body sees a |
1792 | * completely new SV for closures/references to work as they |
1793 | * used to */ |
1d7c1841 |
1794 | SvREFCNT_dec(*itersvp); |
1795 | *itersvp = newSViv(cx->blk_loop.iterix++); |
eaa5c2d6 |
1796 | } |
89ea2908 |
1797 | RETPUSHYES; |
1798 | } |
1799 | |
1800 | /* iterate array */ |
3280af22 |
1801 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) |
4633a7c4 |
1802 | RETPUSHNO; |
a0d0e21e |
1803 | |
1d7c1841 |
1804 | SvREFCNT_dec(*itersvp); |
a0d0e21e |
1805 | |
155aba94 |
1806 | if ((sv = SvMAGICAL(av) |
1c846c1f |
1807 | ? *av_fetch(av, ++cx->blk_loop.iterix, FALSE) |
155aba94 |
1808 | : AvARRAY(av)[++cx->blk_loop.iterix])) |
a0d0e21e |
1809 | SvTEMP_off(sv); |
a0d0e21e |
1810 | else |
3280af22 |
1811 | sv = &PL_sv_undef; |
1812 | if (av != PL_curstack && SvIMMORTAL(sv)) { |
5f05dabc |
1813 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc |
1814 | if (lv && SvREFCNT(lv) > 1) { |
1815 | SvREFCNT_dec(lv); |
1816 | lv = Nullsv; |
1817 | } |
5f05dabc |
1818 | if (lv) |
1819 | SvREFCNT_dec(LvTARG(lv)); |
1820 | else { |
68dc0745 |
1821 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc |
1822 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc |
1823 | LvTYPE(lv) = 'y'; |
68dc0745 |
1824 | sv_magic(lv, Nullsv, 'y', Nullch, 0); |
5f05dabc |
1825 | } |
1826 | LvTARG(lv) = SvREFCNT_inc(av); |
1827 | LvTARGOFF(lv) = cx->blk_loop.iterix; |
42718184 |
1828 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc |
1829 | sv = (SV*)lv; |
1830 | } |
a0d0e21e |
1831 | |
1d7c1841 |
1832 | *itersvp = SvREFCNT_inc(sv); |
a0d0e21e |
1833 | RETPUSHYES; |
1834 | } |
1835 | |
1836 | PP(pp_subst) |
1837 | { |
4e35701f |
1838 | djSP; dTARG; |
a0d0e21e |
1839 | register PMOP *pm = cPMOP; |
1840 | PMOP *rpm = pm; |
1841 | register SV *dstr; |
1842 | register char *s; |
1843 | char *strend; |
1844 | register char *m; |
1845 | char *c; |
1846 | register char *d; |
1847 | STRLEN clen; |
1848 | I32 iters = 0; |
1849 | I32 maxiters; |
1850 | register I32 i; |
1851 | bool once; |
71be2cbc |
1852 | bool rxtainted; |
a0d0e21e |
1853 | char *orig; |
22e551b9 |
1854 | I32 r_flags; |
d9f97599 |
1855 | register REGEXP *rx = pm->op_pmregexp; |
a0d0e21e |
1856 | STRLEN len; |
1857 | int force_on_match = 0; |
3280af22 |
1858 | I32 oldsave = PL_savestack_ix; |
792b2c16 |
1859 | bool do_utf8; |
1860 | STRLEN slen; |
a0d0e21e |
1861 | |
5cd24f17 |
1862 | /* known replacement string? */ |
1863 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; |
533c011a |
1864 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
1865 | TARG = POPs; |
1866 | else { |
54b9620d |
1867 | TARG = DEFSV; |
a0d0e21e |
1868 | EXTEND(SP,1); |
1c846c1f |
1869 | } |
ffc61ed2 |
1870 | PL_reg_sv = TARG; |
792b2c16 |
1871 | do_utf8 = DO_UTF8(PL_reg_sv); |
eca06228 |
1872 | if (SvFAKE(TARG) && SvREADONLY(TARG)) |
1873 | sv_force_normal(TARG); |
68dc0745 |
1874 | if (SvREADONLY(TARG) |
1875 | || (SvTYPE(TARG) > SVt_PVLV |
1876 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG)))) |
d470f89e |
1877 | DIE(aTHX_ PL_no_modify); |
8ec5e241 |
1878 | PUTBACK; |
1879 | |
a0d0e21e |
1880 | s = SvPV(TARG, len); |
68dc0745 |
1881 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e |
1882 | force_on_match = 1; |
b3eb6a9b |
1883 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 |
1884 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
1885 | if (PL_tainted) |
b3eb6a9b |
1886 | rxtainted |= 2; |
9212bbba |
1887 | TAINT_NOT; |
a12c0f56 |
1888 | |
a0d0e21e |
1889 | force_it: |
1890 | if (!pm || !s) |
2269b42e |
1891 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e |
1892 | |
1893 | strend = s + len; |
a7514e1e |
1894 | slen = do_utf8 ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 |
1895 | maxiters = 2 * slen + 10; /* We can match twice at each |
1896 | position, once with zero-length, |
1897 | second time with non-zero. */ |
a0d0e21e |
1898 | |
3280af22 |
1899 | if (!rx->prelen && PL_curpm) { |
1900 | pm = PL_curpm; |
d9f97599 |
1901 | rx = pm->op_pmregexp; |
a0d0e21e |
1902 | } |
22e551b9 |
1903 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
9d080a66 |
1904 | ? REXEC_COPY_STR : 0; |
f722798b |
1905 | if (SvSCREAM(TARG)) |
22e551b9 |
1906 | r_flags |= REXEC_SCREAM; |
a0d0e21e |
1907 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 |
1908 | SAVEINT(PL_multiline); |
1909 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; |
a0d0e21e |
1910 | } |
1911 | orig = m = s; |
f722798b |
1912 | if (rx->reganch & RE_USE_INTUIT) { |
1913 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1914 | |
1915 | if (!s) |
1916 | goto nope; |
1917 | /* How to do it in subst? */ |
1918 | /* if ( (rx->reganch & ROPT_CHECK_ALL) |
1c846c1f |
1919 | && !PL_sawampersand |
f722798b |
1920 | && ((rx->reganch & ROPT_NOSCAN) |
1921 | || !((rx->reganch & RE_INTUIT_TAIL) |
1922 | && (r_flags & REXEC_SCREAM)))) |
1923 | goto yup; |
1924 | */ |
a0d0e21e |
1925 | } |
71be2cbc |
1926 | |
1927 | /* only replace once? */ |
a0d0e21e |
1928 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc |
1929 | |
1930 | /* known replacement string? */ |
5cd24f17 |
1931 | c = dstr ? SvPV(dstr, clen) : Nullch; |
71be2cbc |
1932 | |
1933 | /* can do inplace substitution? */ |
22e551b9 |
1934 | if (c && clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) |
d9f97599 |
1935 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN)) { |
f722798b |
1936 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
1937 | r_flags | REXEC_CHECKED)) |
1938 | { |
8ec5e241 |
1939 | SPAGAIN; |
3280af22 |
1940 | PUSHs(&PL_sv_no); |
71be2cbc |
1941 | LEAVE_SCOPE(oldsave); |
1942 | RETURN; |
1943 | } |
1944 | if (force_on_match) { |
1945 | force_on_match = 0; |
1946 | s = SvPV_force(TARG, len); |
1947 | goto force_it; |
1948 | } |
71be2cbc |
1949 | d = s; |
3280af22 |
1950 | PL_curpm = pm; |
71be2cbc |
1951 | SvSCREAM_off(TARG); /* disable possible screamer */ |
1952 | if (once) { |
48c036b1 |
1953 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
1954 | m = orig + rx->startp[0]; |
1955 | d = orig + rx->endp[0]; |
71be2cbc |
1956 | s = orig; |
1957 | if (m - s > strend - d) { /* faster to shorten from end */ |
1958 | if (clen) { |
1959 | Copy(c, m, clen, char); |
1960 | m += clen; |
a0d0e21e |
1961 | } |
71be2cbc |
1962 | i = strend - d; |
1963 | if (i > 0) { |
1964 | Move(d, m, i, char); |
1965 | m += i; |
a0d0e21e |
1966 | } |
71be2cbc |
1967 | *m = '\0'; |
1968 | SvCUR_set(TARG, m - s); |
1969 | } |
1970 | /*SUPPRESS 560*/ |
155aba94 |
1971 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc |
1972 | d -= clen; |
1973 | m = d; |
1974 | sv_chop(TARG, d-i); |
1975 | s += i; |
1976 | while (i--) |
1977 | *--d = *--s; |
1978 | if (clen) |
1979 | Copy(c, m, clen, char); |
1980 | } |
1981 | else if (clen) { |
1982 | d -= clen; |
1983 | sv_chop(TARG, d); |
1984 | Copy(c, d, clen, char); |
1985 | } |
1986 | else { |
1987 | sv_chop(TARG, d); |
1988 | } |
48c036b1 |
1989 | TAINT_IF(rxtainted & 1); |
8ec5e241 |
1990 | SPAGAIN; |
3280af22 |
1991 | PUSHs(&PL_sv_yes); |
71be2cbc |
1992 | } |
1993 | else { |
71be2cbc |
1994 | do { |
1995 | if (iters++ > maxiters) |
cea2e8a9 |
1996 | DIE(aTHX_ "Substitution loop"); |
d9f97599 |
1997 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
1998 | m = rx->startp[0] + orig; |
71be2cbc |
1999 | /*SUPPRESS 560*/ |
155aba94 |
2000 | if ((i = m - s)) { |
71be2cbc |
2001 | if (s != d) |
2002 | Move(s, d, i, char); |
2003 | d += i; |
a0d0e21e |
2004 | } |
71be2cbc |
2005 | if (clen) { |
2006 | Copy(c, d, clen, char); |
2007 | d += clen; |
2008 | } |
cf93c79d |
2009 | s = rx->endp[0] + orig; |
cea2e8a9 |
2010 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b |
2011 | TARG, NULL, |
2012 | /* don't match same null twice */ |
2013 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); |
71be2cbc |
2014 | if (s != d) { |
2015 | i = strend - s; |
2016 | SvCUR_set(TARG, d - SvPVX(TARG) + i); |
2017 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e |
2018 | } |
48c036b1 |
2019 | TAINT_IF(rxtainted & 1); |
8ec5e241 |
2020 | SPAGAIN; |
71be2cbc |
2021 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e |
2022 | } |
80b498e0 |
2023 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 |
2024 | TAINT_IF(rxtainted); |
8ec5e241 |
2025 | if (SvSMAGICAL(TARG)) { |
2026 | PUTBACK; |
2027 | mg_set(TARG); |
2028 | SPAGAIN; |
2029 | } |
9212bbba |
2030 | SvTAINT(TARG); |
71be2cbc |
2031 | LEAVE_SCOPE(oldsave); |
2032 | RETURN; |
a0d0e21e |
2033 | } |
71be2cbc |
2034 | |
f722798b |
2035 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2036 | r_flags | REXEC_CHECKED)) |
2037 | { |
60aeb6fd |
2038 | bool isutf8; |
2039 | |
a0d0e21e |
2040 | if (force_on_match) { |
2041 | force_on_match = 0; |
2042 | s = SvPV_force(TARG, len); |
2043 | goto force_it; |
2044 | } |
48c036b1 |
2045 | rxtainted |= RX_MATCH_TAINTED(rx); |
8ec5e241 |
2046 | dstr = NEWSV(25, len); |
a0d0e21e |
2047 | sv_setpvn(dstr, m, s-m); |
ffc61ed2 |
2048 | if (DO_UTF8(TARG)) |
2049 | SvUTF8_on(dstr); |
3280af22 |
2050 | PL_curpm = pm; |
a0d0e21e |
2051 | if (!c) { |
c09156bb |
2052 | register PERL_CONTEXT *cx; |
8ec5e241 |
2053 | SPAGAIN; |
a0d0e21e |
2054 | PUSHSUBST(cx); |
2055 | RETURNOP(cPMOP->op_pmreplroot); |
2056 | } |
cf93c79d |
2057 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e |
2058 | do { |
2059 | if (iters++ > maxiters) |
cea2e8a9 |
2060 | DIE(aTHX_ "Substitution loop"); |
d9f97599 |
2061 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
2062 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e |
2063 | m = s; |
2064 | s = orig; |
cf93c79d |
2065 | orig = rx->subbeg; |
a0d0e21e |
2066 | s = orig + (m - s); |
2067 | strend = s + (strend - m); |
2068 | } |
cf93c79d |
2069 | m = rx->startp[0] + orig; |
a0d0e21e |
2070 | sv_catpvn(dstr, s, m-s); |
cf93c79d |
2071 | s = rx->endp[0] + orig; |
a0d0e21e |
2072 | if (clen) |
2073 | sv_catpvn(dstr, c, clen); |
2074 | if (once) |
2075 | break; |
ffc61ed2 |
2076 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2077 | TARG, NULL, r_flags)); |
a0d0e21e |
2078 | sv_catpvn(dstr, s, strend - s); |
748a9306 |
2079 | |
4633a7c4 |
2080 | (void)SvOOK_off(TARG); |
cb0b1708 |
2081 | Safefree(SvPVX(TARG)); |
748a9306 |
2082 | SvPVX(TARG) = SvPVX(dstr); |
2083 | SvCUR_set(TARG, SvCUR(dstr)); |
2084 | SvLEN_set(TARG, SvLEN(dstr)); |
60aeb6fd |
2085 | isutf8 = DO_UTF8(dstr); |
748a9306 |
2086 | SvPVX(dstr) = 0; |
2087 | sv_free(dstr); |
2088 | |
48c036b1 |
2089 | TAINT_IF(rxtainted & 1); |
f878fbec |
2090 | SPAGAIN; |
48c036b1 |
2091 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2092 | |
a0d0e21e |
2093 | (void)SvPOK_only(TARG); |
60aeb6fd |
2094 | if (isutf8) |
2095 | SvUTF8_on(TARG); |
48c036b1 |
2096 | TAINT_IF(rxtainted); |
a0d0e21e |
2097 | SvSETMAGIC(TARG); |
9212bbba |
2098 | SvTAINT(TARG); |
4633a7c4 |
2099 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
2100 | RETURN; |
2101 | } |
5cd24f17 |
2102 | goto ret_no; |
a0d0e21e |
2103 | |
2104 | nope: |
1c846c1f |
2105 | ret_no: |
8ec5e241 |
2106 | SPAGAIN; |
3280af22 |
2107 | PUSHs(&PL_sv_no); |
4633a7c4 |
2108 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
2109 | RETURN; |
2110 | } |
2111 | |
2112 | PP(pp_grepwhile) |
2113 | { |
4e35701f |
2114 | djSP; |
a0d0e21e |
2115 | |
2116 | if (SvTRUEx(POPs)) |
3280af22 |
2117 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2118 | ++*PL_markstack_ptr; |
a0d0e21e |
2119 | LEAVE; /* exit inner scope */ |
2120 | |
2121 | /* All done yet? */ |
3280af22 |
2122 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e |
2123 | I32 items; |
54310121 |
2124 | I32 gimme = GIMME_V; |
a0d0e21e |
2125 | |
2126 | LEAVE; /* exit outer scope */ |
2127 | (void)POPMARK; /* pop src */ |
3280af22 |
2128 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e |
2129 | (void)POPMARK; /* pop dst */ |
3280af22 |
2130 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 |
2131 | if (gimme == G_SCALAR) { |
a0d0e21e |
2132 | dTARGET; |
2133 | XPUSHi(items); |
a0d0e21e |
2134 | } |
54310121 |
2135 | else if (gimme == G_ARRAY) |
2136 | SP += items; |
a0d0e21e |
2137 | RETURN; |
2138 | } |
2139 | else { |
2140 | SV *src; |
2141 | |
2142 | ENTER; /* enter inner scope */ |
1d7c1841 |
2143 | SAVEVPTR(PL_curpm); |
a0d0e21e |
2144 | |
3280af22 |
2145 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e |
2146 | SvTEMP_off(src); |
54b9620d |
2147 | DEFSV = src; |
a0d0e21e |
2148 | |
2149 | RETURNOP(cLOGOP->op_other); |
2150 | } |
2151 | } |
2152 | |
2153 | PP(pp_leavesub) |
2154 | { |
4e35701f |
2155 | djSP; |
a0d0e21e |
2156 | SV **mark; |
2157 | SV **newsp; |
2158 | PMOP *newpm; |
2159 | I32 gimme; |
c09156bb |
2160 | register PERL_CONTEXT *cx; |
b0d9ce38 |
2161 | SV *sv; |
a0d0e21e |
2162 | |
2163 | POPBLOCK(cx,newpm); |
1c846c1f |
2164 | |
a1f49e72 |
2165 | TAINT_NOT; |
a0d0e21e |
2166 | if (gimme == G_SCALAR) { |
2167 | MARK = newsp + 1; |
a29cdaf0 |
2168 | if (MARK <= SP) { |
a8bba7fa |
2169 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 |
2170 | if (SvTEMP(TOPs)) { |
2171 | *MARK = SvREFCNT_inc(TOPs); |
2172 | FREETMPS; |
2173 | sv_2mortal(*MARK); |
cd06dffe |
2174 | } |
2175 | else { |
959e3673 |
2176 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 |
2177 | FREETMPS; |
959e3673 |
2178 | *MARK = sv_mortalcopy(sv); |
2179 | SvREFCNT_dec(sv); |
a29cdaf0 |
2180 | } |
cd06dffe |
2181 | } |
2182 | else |
a29cdaf0 |
2183 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe |
2184 | } |
2185 | else { |
f86702cc |
2186 | MEXTEND(MARK, 0); |
3280af22 |
2187 | *MARK = &PL_sv_undef; |
a0d0e21e |
2188 | } |
2189 | SP = MARK; |
2190 | } |
54310121 |
2191 | else if (gimme == G_ARRAY) { |
f86702cc |
2192 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 |
2193 | if (!SvTEMP(*MARK)) { |
f86702cc |
2194 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 |
2195 | TAINT_NOT; /* Each item is independent */ |
2196 | } |
f86702cc |
2197 | } |
a0d0e21e |
2198 | } |
f86702cc |
2199 | PUTBACK; |
1c846c1f |
2200 | |
b0d9ce38 |
2201 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 |
2202 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e |
2203 | |
2204 | LEAVE; |
b0d9ce38 |
2205 | LEAVESUB(sv); |
a0d0e21e |
2206 | return pop_return(); |
2207 | } |
2208 | |
cd06dffe |
2209 | /* This duplicates the above code because the above code must not |
2210 | * get any slower by more conditions */ |
2211 | PP(pp_leavesublv) |
2212 | { |
2213 | djSP; |
2214 | SV **mark; |
2215 | SV **newsp; |
2216 | PMOP *newpm; |
2217 | I32 gimme; |
2218 | register PERL_CONTEXT *cx; |
b0d9ce38 |
2219 | SV *sv; |
cd06dffe |
2220 | |
2221 | POPBLOCK(cx,newpm); |
1c846c1f |
2222 | |
cd06dffe |
2223 | TAINT_NOT; |
2224 | |
2225 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { |
2226 | /* We are an argument to a function or grep(). |
2227 | * This kind of lvalueness was legal before lvalue |
2228 | * subroutines too, so be backward compatible: |
2229 | * cannot report errors. */ |
2230 | |
2231 | /* Scalar context *is* possible, on the LHS of -> only, |
2232 | * as in f()->meth(). But this is not an lvalue. */ |
2233 | if (gimme == G_SCALAR) |
2234 | goto temporise; |
2235 | if (gimme == G_ARRAY) { |
a8bba7fa |
2236 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe |
2237 | goto temporise_array; |
2238 | EXTEND_MORTAL(SP - newsp); |
2239 | for (mark = newsp + 1; mark <= SP; mark++) { |
2240 | if (SvTEMP(*mark)) |
2241 | /* empty */ ; |
2242 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) |
2243 | *mark = sv_mortalcopy(*mark); |
2244 | else { |
2245 | /* Can be a localized value subject to deletion. */ |
2246 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2247 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2248 | } |
2249 | } |
2250 | } |
2251 | } |
2252 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ |
2253 | /* Here we go for robustness, not for speed, so we change all |
2254 | * the refcounts so the caller gets a live guy. Cannot set |
2255 | * TEMP, so sv_2mortal is out of question. */ |
a8bba7fa |
2256 | if (!CvLVALUE(cx->blk_sub.cv)) { |
b0d9ce38 |
2257 | POPSUB(cx,sv); |
d470f89e |
2258 | PL_curpm = newpm; |
b0d9ce38 |
2259 | LEAVE; |
2260 | LEAVESUB(sv); |
d470f89e |
2261 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2262 | } |
cd06dffe |
2263 | if (gimme == G_SCALAR) { |
2264 | MARK = newsp + 1; |
2265 | EXTEND_MORTAL(1); |
2266 | if (MARK == SP) { |
d470f89e |
2267 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
b0d9ce38 |
2268 | POPSUB(cx,sv); |
d470f89e |
2269 | PL_curpm = newpm; |
b0d9ce38 |
2270 | LEAVE; |
2271 | LEAVESUB(sv); |
d470f89e |
2272 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
cd06dffe |
2273 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); |
d470f89e |
2274 | } |
cd06dffe |
2275 | else { /* Can be a localized value |
2276 | * subject to deletion. */ |
2277 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2278 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2279 | } |
2280 | } |
d470f89e |
2281 | else { /* Should not happen? */ |
b0d9ce38 |
2282 | POPSUB(cx,sv); |
d470f89e |
2283 | PL_curpm = newpm; |
b0d9ce38 |
2284 | LEAVE; |
2285 | LEAVESUB(sv); |
d470f89e |
2286 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe |
2287 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e |
2288 | } |
cd06dffe |
2289 | SP = MARK; |
2290 | } |
2291 | else if (gimme == G_ARRAY) { |
2292 | EXTEND_MORTAL(SP - newsp); |
2293 | for (mark = newsp + 1; mark <= SP; mark++) { |
d470f89e |
2294 | if (SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
2295 | /* Might be flattened array after $#array = */ |
2296 | PUTBACK; |
b0d9ce38 |
2297 | POPSUB(cx,sv); |
d470f89e |
2298 | PL_curpm = newpm; |
b0d9ce38 |
2299 | LEAVE; |
2300 | LEAVESUB(sv); |
d470f89e |
2301 | DIE(aTHX_ "Can't return %s from lvalue subroutine", |
cd06dffe |
2302 | (*mark != &PL_sv_undef) |
2303 | ? (SvREADONLY(TOPs) |
2304 | ? "a readonly value" : "a temporary") |
2305 | : "an uninitialized value"); |
d470f89e |
2306 | } |
cd06dffe |
2307 | else { |
cd06dffe |
2308 | /* Can be a localized value subject to deletion. */ |
2309 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2310 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2311 | } |
2312 | } |
2313 | } |
2314 | } |
2315 | else { |
2316 | if (gimme == G_SCALAR) { |
2317 | temporise: |
2318 | MARK = newsp + 1; |
2319 | if (MARK <= SP) { |
a8bba7fa |
2320 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe |
2321 | if (SvTEMP(TOPs)) { |
2322 | *MARK = SvREFCNT_inc(TOPs); |
2323 | FREETMPS; |
2324 | sv_2mortal(*MARK); |
2325 | } |
2326 | else { |
959e3673 |
2327 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe |
2328 | FREETMPS; |
959e3673 |
2329 | *MARK = sv_mortalcopy(sv); |
2330 | SvREFCNT_dec(sv); |
cd06dffe |
2331 | } |
2332 | } |
2333 | else |
2334 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
2335 | } |
2336 | else { |
2337 | MEXTEND(MARK, 0); |
2338 | *MARK = &PL_sv_undef; |
2339 | } |
2340 | SP = MARK; |
2341 | } |
2342 | else if (gimme == G_ARRAY) { |
2343 | temporise_array: |
2344 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
2345 | if (!SvTEMP(*MARK)) { |
2346 | *MARK = sv_mortalcopy(*MARK); |
2347 | TAINT_NOT; /* Each item is independent */ |
2348 | } |
2349 | } |
2350 | } |
2351 | } |
2352 | PUTBACK; |
1c846c1f |
2353 | |
b0d9ce38 |
2354 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe |
2355 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2356 | |
2357 | LEAVE; |
b0d9ce38 |
2358 | LEAVESUB(sv); |
cd06dffe |
2359 | return pop_return(); |
2360 | } |
2361 | |
2362 | |
76e3520e |
2363 | STATIC CV * |
cea2e8a9 |
2364 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 |
2365 | { |
3280af22 |
2366 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 |
2367 | |
2368 | if (!PERLDB_SUB_NN) { |
2369 | GV *gv = CvGV(cv); |
2370 | |
2371 | save_item(dbsv); |
2372 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) |
1c846c1f |
2373 | || strEQ(GvNAME(gv), "END") |
491527d0 |
2374 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
2375 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) |
2376 | && (gv = (GV*)*svp) ))) { |
2377 | /* Use GV from the stack as a fallback. */ |
2378 | /* GV is potentially non-unique, or contain different CV. */ |
c2e66d9e |
2379 | SV *tmp = newRV((SV*)cv); |
2380 | sv_setsv(dbsv, tmp); |
2381 | SvREFCNT_dec(tmp); |
491527d0 |
2382 | } |
2383 | else { |
2384 | gv_efullname3(dbsv, gv, Nullch); |
2385 | } |
3de9ffa1 |
2386 | } |
2387 | else { |
155aba94 |
2388 | (void)SvUPGRADE(dbsv, SVt_PVIV); |
2389 | (void)SvIOK_on(dbsv); |
491527d0 |
2390 | SAVEIV(SvIVX(dbsv)); |
5bc28da9 |
2391 | SvIVX(dbsv) = PTR2IV(cv); /* Do it the quickest way */ |
3de9ffa1 |
2392 | } |
491527d0 |
2393 | |
3de9ffa1 |
2394 | if (CvXSUB(cv)) |
3280af22 |
2395 | PL_curcopdb = PL_curcop; |
2396 | cv = GvCV(PL_DBsub); |
3de9ffa1 |
2397 | return cv; |
2398 | } |
2399 | |
a0d0e21e |
2400 | PP(pp_entersub) |
2401 | { |
4e35701f |
2402 | djSP; dPOPss; |
a0d0e21e |
2403 | GV *gv; |
2404 | HV *stash; |
2405 | register CV *cv; |
c09156bb |
2406 | register PERL_CONTEXT *cx; |
5d94fbed |
2407 | I32 gimme; |
533c011a |
2408 | bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e |
2409 | |
2410 | if (!sv) |
cea2e8a9 |
2411 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e |
2412 | switch (SvTYPE(sv)) { |
2413 | default: |
2414 | if (!SvROK(sv)) { |
748a9306 |
2415 | char *sym; |
2d8e6c8d |
2416 | STRLEN n_a; |
748a9306 |
2417 | |
3280af22 |
2418 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a |
2419 | if (hasargs) |
3280af22 |
2420 | SP = PL_stack_base + POPMARK; |
a0d0e21e |
2421 | RETURN; |
fb73857a |
2422 | } |
15ff848f |
2423 | if (SvGMAGICAL(sv)) { |
2424 | mg_get(sv); |
2425 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; |
2426 | } |
2427 | else |
2d8e6c8d |
2428 | sym = SvPV(sv, n_a); |
15ff848f |
2429 | if (!sym) |
cea2e8a9 |
2430 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a |
2431 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
2432 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 |
2433 | cv = get_cv(sym, TRUE); |
a0d0e21e |
2434 | break; |
2435 | } |
f5284f61 |
2436 | { |
2437 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
2438 | tryAMAGICunDEREF(to_cv); |
2439 | } |
a0d0e21e |
2440 | cv = (CV*)SvRV(sv); |
2441 | if (SvTYPE(cv) == SVt_PVCV) |
2442 | break; |
2443 | /* FALL THROUGH */ |
2444 | case SVt_PVHV: |
2445 | case SVt_PVAV: |
cea2e8a9 |
2446 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e |
2447 | case SVt_PVCV: |
2448 | cv = (CV*)sv; |
2449 | break; |
2450 | case SVt_PVGV: |
8ebc5c01 |
2451 | if (!(cv = GvCVu((GV*)sv))) |
f6ec51f7 |
2452 | cv = sv_2cv(sv, &stash, &gv, FALSE); |
2453 | if (!cv) { |
2454 | ENTER; |
2455 | SAVETMPS; |
2456 | goto try_autoload; |
2457 | } |
2458 | break; |
a0d0e21e |
2459 | } |
2460 | |
2461 | ENTER; |
2462 | SAVETMPS; |
2463 | |
2464 | retry: |
a0d0e21e |
2465 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
44a8e56a |
2466 | GV* autogv; |
22239a37 |
2467 | SV* sub_name; |
44a8e56a |
2468 | |
2469 | /* anonymous or undef'd function leaves us no recourse */ |
2470 | if (CvANON(cv) || !(gv = CvGV(cv))) |
cea2e8a9 |
2471 | DIE(aTHX_ "Undefined subroutine called"); |
67caa1fe |
2472 | |
44a8e56a |
2473 | /* autoloaded stub? */ |
2474 | if (cv != GvCV(gv)) { |
2475 | cv = GvCV(gv); |
a0d0e21e |
2476 | } |
44a8e56a |
2477 | /* should call AUTOLOAD now? */ |
67caa1fe |
2478 | else { |
f6ec51f7 |
2479 | try_autoload: |
2480 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
2481 | FALSE))) |
2482 | { |
2483 | cv = GvCV(autogv); |
2484 | } |
2485 | /* sorry */ |
2486 | else { |
2487 | sub_name = sv_newmortal(); |
2488 | gv_efullname3(sub_name, gv, Nullch); |
cea2e8a9 |
2489 | DIE(aTHX_ "Undefined subroutine &%s called", SvPVX(sub_name)); |
f6ec51f7 |
2490 | } |
67caa1fe |
2491 | } |
2492 | if (!cv) |
cea2e8a9 |
2493 | DIE(aTHX_ "Not a CODE reference"); |
67caa1fe |
2494 | goto retry; |
a0d0e21e |
2495 | } |
2496 | |
54310121 |
2497 | gimme = GIMME_V; |
67caa1fe |
2498 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
4f01c5a5 |
2499 | cv = get_db_sub(&sv, cv); |
67caa1fe |
2500 | if (!cv) |
cea2e8a9 |
2501 | DIE(aTHX_ "No DBsub routine"); |
67caa1fe |
2502 | } |
a0d0e21e |
2503 | |
11343788 |
2504 | #ifdef USE_THREADS |
3de9ffa1 |
2505 | /* |
2506 | * First we need to check if the sub or method requires locking. |
458fb581 |
2507 | * If so, we gain a lock on the CV, the first argument or the |
2508 | * stash (for static methods), as appropriate. This has to be |
2509 | * inline because for FAKE_THREADS, COND_WAIT inlines code to |
2510 | * reschedule by returning a new op. |
3de9ffa1 |
2511 | */ |
11343788 |
2512 | MUTEX_LOCK(CvMUTEXP(cv)); |
77a005ab |
2513 | if (CvFLAGS(cv) & CVf_LOCKED) { |
2514 | MAGIC *mg; |
2515 | if (CvFLAGS(cv) & CVf_METHOD) { |
533c011a |
2516 | if (SP > PL_stack_base + TOPMARK) |
2517 | sv = *(PL_stack_base + TOPMARK + 1); |
77a005ab |
2518 | else { |
13e08037 |
2519 | AV *av = (AV*)PL_curpad[0]; |
2520 | if (hasargs || !av || AvFILLp(av) < 0 |
2521 | || !(sv = AvARRAY(av)[0])) |
2522 | { |
2523 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
d470f89e |
2524 | DIE(aTHX_ "no argument for locked method call"); |
13e08037 |
2525 | } |
77a005ab |
2526 | } |
2527 | if (SvROK(sv)) |
2528 | sv = SvRV(sv); |
458fb581 |
2529 | else { |
2530 | STRLEN len; |
2531 | char *stashname = SvPV(sv, len); |
2532 | sv = (SV*)gv_stashpvn(stashname, len, TRUE); |
2533 | } |
77a005ab |
2534 | } |
2535 | else { |
2536 | sv = (SV*)cv; |
2537 | } |
2538 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
2539 | mg = condpair_magic(sv); |
2540 | MUTEX_LOCK(MgMUTEXP(mg)); |
2541 | if (MgOWNER(mg) == thr) |
2542 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
2543 | else { |
2544 | while (MgOWNER(mg)) |
2545 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); |
2546 | MgOWNER(mg) = thr; |
bf49b057 |
2547 | DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: pp_entersub lock %p\n", |
1fd28e87 |
2548 | thr, sv);) |
77a005ab |
2549 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
c76ac1ee |
2550 | SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv); |
11343788 |
2551 | } |
77a005ab |
2552 | MUTEX_LOCK(CvMUTEXP(cv)); |
11343788 |
2553 | } |
3de9ffa1 |
2554 | /* |
2555 | * Now we have permission to enter the sub, we must distinguish |
2556 | * four cases. (0) It's an XSUB (in which case we don't care |
2557 | * about ownership); (1) it's ours already (and we're recursing); |
2558 | * (2) it's free (but we may already be using a cached clone); |
2559 | * (3) another thread owns it. Case (1) is easy: we just use it. |
2560 | * Case (2) means we look for a clone--if we have one, use it |
2561 | * otherwise grab ownership of cv. Case (3) means we look for a |
2562 | * clone (for non-XSUBs) and have to create one if we don't |
2563 | * already have one. |
2564 | * Why look for a clone in case (2) when we could just grab |
2565 | * ownership of cv straight away? Well, we could be recursing, |
2566 | * i.e. we originally tried to enter cv while another thread |
2567 | * owned it (hence we used a clone) but it has been freed up |
2568 | * and we're now recursing into it. It may or may not be "better" |
2569 | * to use the clone but at least CvDEPTH can be trusted. |
2570 | */ |
2571 | if (CvOWNER(cv) == thr || CvXSUB(cv)) |
2572 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
11343788 |
2573 | else { |
3de9ffa1 |
2574 | /* Case (2) or (3) */ |
2575 | SV **svp; |
2576 | |
11343788 |
2577 | /* |
3de9ffa1 |
2578 | * XXX Might it be better to release CvMUTEXP(cv) while we |
2579 | * do the hv_fetch? We might find someone has pinched it |
2580 | * when we look again, in which case we would be in case |
2581 | * (3) instead of (2) so we'd have to clone. Would the fact |
2582 | * that we released the mutex more quickly make up for this? |
2583 | */ |
b099ddc0 |
2584 | if ((svp = hv_fetch(thr->cvcache, (char *)cv, sizeof(cv), FALSE))) |
6ee623d5 |
2585 | { |
3de9ffa1 |
2586 | /* We already have a clone to use */ |
11343788 |
2587 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
3de9ffa1 |
2588 | cv = *(CV**)svp; |
bf49b057 |
2589 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1fd28e87 |
2590 | "entersub: %p already has clone %p:%s\n", |
2591 | thr, cv, SvPEEK((SV*)cv))); |
3de9ffa1 |
2592 | CvOWNER(cv) = thr; |
2593 | SvREFCNT_inc(cv); |
2594 | if (CvDEPTH(cv) == 0) |
c76ac1ee |
2595 | SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); |
3de9ffa1 |
2596 | } |
11343788 |
2597 | else { |
3de9ffa1 |
2598 | /* (2) => grab ownership of cv. (3) => make clone */ |
2599 | if (!CvOWNER(cv)) { |
2600 | CvOWNER(cv) = thr; |
2601 | SvREFCNT_inc(cv); |
11343788 |
2602 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
bf49b057 |
2603 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1fd28e87 |
2604 | "entersub: %p grabbing %p:%s in stash %s\n", |
2605 | thr, cv, SvPEEK((SV*)cv), CvSTASH(cv) ? |
3de9ffa1 |
2606 | HvNAME(CvSTASH(cv)) : "(none)")); |
cd06dffe |
2607 | } |
2608 | else { |
3de9ffa1 |
2609 | /* Make a new clone. */ |
2610 | CV *clonecv; |
2611 | SvREFCNT_inc(cv); /* don't let it vanish from under us */ |
2612 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
bf49b057 |
2613 | DEBUG_S((PerlIO_printf(Perl_debug_log, |
1fd28e87 |
2614 | "entersub: %p cloning %p:%s\n", |
2615 | thr, cv, SvPEEK((SV*)cv)))); |
3de9ffa1 |
2616 | /* |
2617 | * We're creating a new clone so there's no race |
2618 | * between the original MUTEX_UNLOCK and the |
2619 | * SvREFCNT_inc since no one will be trying to undef |
2620 | * it out from underneath us. At least, I don't think |
2621 | * there's a race... |
2622 | */ |
2623 | clonecv = cv_clone(cv); |
2624 | SvREFCNT_dec(cv); /* finished with this */ |
199100c8 |
2625 | hv_store(thr->cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0); |
3de9ffa1 |
2626 | CvOWNER(clonecv) = thr; |
2627 | cv = clonecv; |
11343788 |
2628 | SvREFCNT_inc(cv); |
11343788 |
2629 | } |
8b73bbec |
2630 | DEBUG_S(if (CvDEPTH(cv) != 0) |
bf49b057 |
2631 | PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", |
3de9ffa1 |
2632 | CvDEPTH(cv));); |
c76ac1ee |
2633 | SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); |
11343788 |
2634 | } |
3de9ffa1 |
2635 | } |
11343788 |
2636 | #endif /* USE_THREADS */ |
2637 | |
a0d0e21e |
2638 | if (CvXSUB(cv)) { |
67caa1fe |
2639 | #ifdef PERL_XSUB_OLDSTYLE |
a0d0e21e |
2640 | if (CvOLDSTYLE(cv)) { |
20ce7b12 |
2641 | I32 (*fp3)(int,int,int); |
a0d0e21e |
2642 | dMARK; |
2643 | register I32 items = SP - MARK; |
67955e0c |
2644 | /* We dont worry to copy from @_. */ |
924508f0 |
2645 | while (SP > mark) { |
2646 | SP[1] = SP[0]; |
2647 | SP--; |
a0d0e21e |
2648 | } |
3280af22 |
2649 | PL_stack_sp = mark + 1; |
1d7c1841 |
2650 | fp3 = (I32(*)(int,int,int))CvXSUB(cv); |
1c846c1f |
2651 | items = (*fp3)(CvXSUBANY(cv).any_i32, |
3280af22 |
2652 | MARK - PL_stack_base + 1, |
ecfc5424 |
2653 | items); |
3280af22 |
2654 | PL_stack_sp = PL_stack_base + items; |
a0d0e21e |
2655 | } |
67caa1fe |
2656 | else |
2657 | #endif /* PERL_XSUB_OLDSTYLE */ |
2658 | { |
748a9306 |
2659 | I32 markix = TOPMARK; |
2660 | |
a0d0e21e |
2661 | PUTBACK; |
67955e0c |
2662 | |
2663 | if (!hasargs) { |
2664 | /* Need to copy @_ to stack. Alternative may be to |
2665 | * switch stack to @_, and copy return values |
2666 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ |
6d4ff0d2 |
2667 | AV* av; |
2668 | I32 items; |
2669 | #ifdef USE_THREADS |
533c011a |
2670 | av = (AV*)PL_curpad[0]; |
6d4ff0d2 |
2671 | #else |
3280af22 |
2672 | av = GvAV(PL_defgv); |
6d4ff0d2 |
2673 | #endif /* USE_THREADS */ |
93965878 |
2674 | items = AvFILLp(av) + 1; /* @_ is not tieable */ |
67955e0c |
2675 | |
2676 | if (items) { |
2677 | /* Mark is at the end of the stack. */ |
924508f0 |
2678 | EXTEND(SP, items); |
2679 | Copy(AvARRAY(av), SP + 1, items, SV*); |
2680 | SP += items; |
1c846c1f |
2681 | PUTBACK ; |
67955e0c |
2682 | } |
2683 | } |
67caa1fe |
2684 | /* We assume first XSUB in &DB::sub is the called one. */ |
2685 | if (PL_curcopdb) { |
1d7c1841 |
2686 | SAVEVPTR(PL_curcop); |
3280af22 |
2687 | PL_curcop = PL_curcopdb; |
2688 | PL_curcopdb = NULL; |
67955e0c |
2689 | } |
2690 | /* Do we need to open block here? XXXX */ |
0cb96387 |
2691 | (void)(*CvXSUB(cv))(aTHXo_ cv); |
748a9306 |
2692 | |
2693 | /* Enforce some sanity in scalar context. */ |
3280af22 |
2694 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { |
2695 | if (markix > PL_stack_sp - PL_stack_base) |
2696 | *(PL_stack_base + markix) = &PL_sv_undef; |
748a9306 |
2697 | else |
3280af22 |
2698 | *(PL_stack_base + markix) = *PL_stack_sp; |
2699 | PL_stack_sp = PL_stack_base + markix; |
748a9306 |
2700 | } |
a0d0e21e |
2701 | } |
2702 | LEAVE; |
2703 | return NORMAL; |
2704 | } |
2705 | else { |
2706 | dMARK; |
2707 | register I32 items = SP - MARK; |
a0d0e21e |
2708 | AV* padlist = CvPADLIST(cv); |
2709 | SV** svp = AvARRAY(padlist); |
533c011a |
2710 | push_return(PL_op->op_next); |
a0d0e21e |
2711 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2712 | PUSHSUB(cx); |
2713 | CvDEPTH(cv)++; |
6b35e009 |
2714 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2715 | * that eval'' ops within this sub know the correct lexical space. |
2716 | * Owing the speed considerations, we choose to search for the cv |
2717 | * in doeval() instead. |
2718 | */ |
a0d0e21e |
2719 | if (CvDEPTH(cv) < 2) |
2720 | (void)SvREFCNT_inc(cv); |
2721 | else { /* save temporaries on recursion? */ |
1d7c1841 |
2722 | PERL_STACK_OVERFLOW_CHECK(); |
93965878 |
2723 | if (CvDEPTH(cv) > AvFILLp(padlist)) { |
a0d0e21e |
2724 | AV *av; |
2725 | AV *newpad = newAV(); |
4aa0a1f7 |
2726 | SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]); |
93965878 |
2727 | I32 ix = AvFILLp((AV*)svp[1]); |
1d7c1841 |
2728 | I32 names_fill = AvFILLp((AV*)svp[0]); |
a0d0e21e |
2729 | svp = AvARRAY(svp[0]); |
748a9306 |
2730 | for ( ;ix > 0; ix--) { |
1d7c1841 |
2731 | if (names_fill >= ix && svp[ix] != &PL_sv_undef) { |
748a9306 |
2732 | char *name = SvPVX(svp[ix]); |
5f05dabc |
2733 | if ((SvFLAGS(svp[ix]) & SVf_FAKE) /* outer lexical? */ |
2734 | || *name == '&') /* anonymous code? */ |
2735 | { |
2736 | av_store(newpad, ix, SvREFCNT_inc(oldpad[ix])); |
748a9306 |
2737 | } |
2738 | else { /* our own lexical */ |
2739 | if (*name == '@') |
2740 | av_store(newpad, ix, sv = (SV*)newAV()); |
2741 | else if (*name == '%') |
2742 | av_store(newpad, ix, sv = (SV*)newHV()); |
2743 | else |
2744 | av_store(newpad, ix, sv = NEWSV(0,0)); |
2745 | SvPADMY_on(sv); |
2746 | } |
a0d0e21e |
2747 | } |
1d7c1841 |
2748 | else if (IS_PADGV(oldpad[ix]) || IS_PADCONST(oldpad[ix])) { |
2749 | av_store(newpad, ix, sv = SvREFCNT_inc(oldpad[ix])); |
2750 | } |
a0d0e21e |
2751 | else { |
748a9306 |
2752 | av_store(newpad, ix, sv = NEWSV(0,0)); |
a0d0e21e |
2753 | SvPADTMP_on(sv); |
2754 | } |
2755 | } |
2756 | av = newAV(); /* will be @_ */ |
2757 | av_extend(av, 0); |
2758 | av_store(newpad, 0, (SV*)av); |
2759 | AvFLAGS(av) = AVf_REIFY; |
2760 | av_store(padlist, CvDEPTH(cv), (SV*)newpad); |
93965878 |
2761 | AvFILLp(padlist) = CvDEPTH(cv); |
a0d0e21e |
2762 | svp = AvARRAY(padlist); |
2763 | } |
2764 | } |
6d4ff0d2 |
2765 | #ifdef USE_THREADS |
2766 | if (!hasargs) { |
533c011a |
2767 | AV* av = (AV*)PL_curpad[0]; |
6d4ff0d2 |
2768 | |
93965878 |
2769 | items = AvFILLp(av) + 1; |
6d4ff0d2 |
2770 | if (items) { |
2771 | /* Mark is at the end of the stack. */ |
924508f0 |
2772 | EXTEND(SP, items); |
2773 | Copy(AvARRAY(av), SP + 1, items, SV*); |
2774 | SP += items; |
1c846c1f |
2775 | PUTBACK ; |
6d4ff0d2 |
2776 | } |
2777 | } |
2778 | #endif /* USE_THREADS */ |
1d7c1841 |
2779 | SAVEVPTR(PL_curpad); |
3280af22 |
2780 | PL_curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]); |
6d4ff0d2 |
2781 | #ifndef USE_THREADS |
2782 | if (hasargs) |
2783 | #endif /* USE_THREADS */ |
2784 | { |
2785 | AV* av; |
a0d0e21e |
2786 | SV** ary; |
2787 | |
77a005ab |
2788 | #if 0 |
bf49b057 |
2789 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 |
2790 | "%p entersub preparing @_\n", thr)); |
77a005ab |
2791 | #endif |
3280af22 |
2792 | av = (AV*)PL_curpad[0]; |
221373f0 |
2793 | if (AvREAL(av)) { |
2794 | /* @_ is normally not REAL--this should only ever |
2795 | * happen when DB::sub() calls things that modify @_ */ |
2796 | av_clear(av); |
2797 | AvREAL_off(av); |
2798 | AvREIFY_on(av); |
2799 | } |
6d4ff0d2 |
2800 | #ifndef USE_THREADS |
3280af22 |
2801 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2802 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); |
6d4ff0d2 |
2803 | #endif /* USE_THREADS */ |
7032098e |
2804 | cx->blk_sub.oldcurpad = PL_curpad; |
6d4ff0d2 |
2805 | cx->blk_sub.argarray = av; |
a0d0e21e |
2806 | ++MARK; |
2807 | |
2808 | if (items > AvMAX(av) + 1) { |
2809 | ary = AvALLOC(av); |
2810 | if (AvARRAY(av) != ary) { |
2811 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); |
2812 | SvPVX(av) = (char*)ary; |
2813 | } |
2814 | if (items > AvMAX(av) + 1) { |
2815 | AvMAX(av) = items - 1; |
2816 | Renew(ary,items,SV*); |
2817 | AvALLOC(av) = ary; |
2818 | SvPVX(av) = (char*)ary; |
2819 | } |
2820 | } |
2821 | Copy(MARK,AvARRAY(av),items,SV*); |
93965878 |
2822 | AvFILLp(av) = items - 1; |
1c846c1f |
2823 | |
a0d0e21e |
2824 | while (items--) { |
2825 | if (*MARK) |
2826 | SvTEMP_off(*MARK); |
2827 | MARK++; |
2828 | } |
2829 | } |
4a925ff6 |
2830 | /* warning must come *after* we fully set up the context |
2831 | * stuff so that __WARN__ handlers can safely dounwind() |
2832 | * if they want to |
2833 | */ |
2834 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) |
2835 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) |
2836 | sub_crush_depth(cv); |
77a005ab |
2837 | #if 0 |
bf49b057 |
2838 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 |
2839 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab |
2840 | #endif |
a0d0e21e |
2841 | RETURNOP(CvSTART(cv)); |
2842 | } |
2843 | } |
2844 | |
44a8e56a |
2845 | void |
864dbfa3 |
2846 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a |
2847 | { |
2848 | if (CvANON(cv)) |
cea2e8a9 |
2849 | Perl_warner(aTHX_ WARN_RECURSION, "Deep recursion on anonymous subroutine"); |
44a8e56a |
2850 | else { |
2851 | SV* tmpstr = sv_newmortal(); |
2852 | gv_efullname3(tmpstr, CvGV(cv), Nullch); |
1c846c1f |
2853 | Perl_warner(aTHX_ WARN_RECURSION, "Deep recursion on subroutine \"%s\"", |
599cee73 |
2854 | SvPVX(tmpstr)); |
44a8e56a |
2855 | } |
2856 | } |
2857 | |
a0d0e21e |
2858 | PP(pp_aelem) |
2859 | { |
4e35701f |
2860 | djSP; |
a0d0e21e |
2861 | SV** svp; |
d804643f |
2862 | SV* elemsv = POPs; |
2863 | IV elem = SvIV(elemsv); |
68dc0745 |
2864 | AV* av = (AV*)POPs; |
78f9721b |
2865 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a |
2866 | U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av)); |
be6c24e0 |
2867 | SV *sv; |
a0d0e21e |
2868 | |
e35c1634 |
2869 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
d804643f |
2870 | Perl_warner(aTHX_ WARN_MISC, "Use of reference \"%s\" as array index", SvPV_nolen(elemsv)); |
748a9306 |
2871 | if (elem > 0) |
3280af22 |
2872 | elem -= PL_curcop->cop_arybase; |
a0d0e21e |
2873 | if (SvTYPE(av) != SVt_PVAV) |
2874 | RETPUSHUNDEF; |
68dc0745 |
2875 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e |
2876 | if (lval) { |
3280af22 |
2877 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 |
2878 | SV* lv; |
2879 | if (!defer) |
cea2e8a9 |
2880 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 |
2881 | lv = sv_newmortal(); |
2882 | sv_upgrade(lv, SVt_PVLV); |
2883 | LvTYPE(lv) = 'y'; |
2884 | sv_magic(lv, Nullsv, 'y', Nullch, 0); |
2885 | LvTARG(lv) = SvREFCNT_inc(av); |
2886 | LvTARGOFF(lv) = elem; |
2887 | LvTARGLEN(lv) = 1; |
2888 | PUSHs(lv); |
2889 | RETURN; |
2890 | } |
533c011a |
2891 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 |
2892 | save_aelem(av, elem, svp); |
533c011a |
2893 | else if (PL_op->op_private & OPpDEREF) |
2894 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); |
a0d0e21e |
2895 | } |
3280af22 |
2896 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 |
2897 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2898 | sv = sv_mortalcopy(sv); |
2899 | PUSHs(sv); |
a0d0e21e |
2900 | RETURN; |
2901 | } |
2902 | |
02a9e968 |
2903 | void |
864dbfa3 |
2904 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 |
2905 | { |
2906 | if (SvGMAGICAL(sv)) |
2907 | mg_get(sv); |
2908 | if (!SvOK(sv)) { |
2909 | if (SvREADONLY(sv)) |
cea2e8a9 |
2910 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc |
2911 | if (SvTYPE(sv) < SVt_RV) |
2912 | sv_upgrade(sv, SVt_RV); |
2913 | else if (SvTYPE(sv) >= SVt_PV) { |
2914 | (void)SvOOK_off(sv); |
2915 | Safefree(SvPVX(sv)); |
2916 | SvLEN(sv) = SvCUR(sv) = 0; |
2917 | } |
68dc0745 |
2918 | switch (to_what) { |
5f05dabc |
2919 | case OPpDEREF_SV: |
8c52afec |
2920 | SvRV(sv) = NEWSV(355,0); |
5f05dabc |
2921 | break; |
2922 | case OPpDEREF_AV: |
2923 | SvRV(sv) = (SV*)newAV(); |
2924 | break; |
2925 | case OPpDEREF_HV: |
2926 | SvRV(sv) = (SV*)newHV(); |
2927 | break; |
2928 | } |
02a9e968 |
2929 | SvROK_on(sv); |
2930 | SvSETMAGIC(sv); |
2931 | } |
2932 | } |
2933 | |
a0d0e21e |
2934 | PP(pp_method) |
2935 | { |
4e35701f |
2936 | djSP; |
f5d5a27c |
2937 | SV* sv = TOPs; |
2938 | |
2939 | if (SvROK(sv)) { |
eda383f2 |
2940 | SV* rsv = SvRV(sv); |
f5d5a27c |
2941 | if (SvTYPE(rsv) == SVt_PVCV) { |
2942 | SETs(rsv); |
2943 | RETURN; |
2944 | } |
2945 | } |
2946 | |
2947 | SETs(method_common(sv, Null(U32*))); |
2948 | RETURN; |
2949 | } |
2950 | |
2951 | PP(pp_method_named) |
2952 | { |
2953 | djSP; |
2954 | SV* sv = cSVOP->op_sv; |
2955 | U32 hash = SvUVX(sv); |
2956 | |
2957 | XPUSHs(method_common(sv, &hash)); |
2958 | RETURN; |
2959 | } |
2960 | |
2961 | STATIC SV * |
2962 | S_method_common(pTHX_ SV* meth, U32* hashp) |
2963 | { |
a0d0e21e |
2964 | SV* sv; |
2965 | SV* ob; |
2966 | GV* gv; |
56304f61 |
2967 | HV* stash; |
2968 | char* name; |
f5d5a27c |
2969 | STRLEN namelen; |
ac91690f |
2970 | char* packname; |
2971 | STRLEN packlen; |
a0d0e21e |
2972 | |
f5d5a27c |
2973 | name = SvPV(meth, namelen); |
3280af22 |
2974 | sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c |
2975 | |
4f1b7578 |
2976 | if (!sv) |
2977 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); |
2978 | |
16d20bd9 |
2979 | if (SvGMAGICAL(sv)) |
2980 | mg_get(sv); |
a0d0e21e |
2981 | if (SvROK(sv)) |
16d20bd9 |
2982 | ob = (SV*)SvRV(sv); |
a0d0e21e |
2983 | else { |
2984 | GV* iogv; |
a0d0e21e |
2985 | |
56304f61 |
2986 | packname = Nullch; |
a0d0e21e |
2987 | if (!SvOK(sv) || |
56304f61 |
2988 | !(packname = SvPV(sv, packlen)) || |
a0d0e21e |
2989 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
2990 | !(ob=(SV*)GvIO(iogv))) |
2991 | { |
1c846c1f |
2992 | if (!packname || |
fd400ab9 |
2993 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 |
2994 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd |
2995 | : !isIDFIRST(*packname) |
2996 | )) |
2997 | { |
f5d5a27c |
2998 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
2999 | SvOK(sv) ? "without a package or object reference" |
3000 | : "on an undefined value"); |
834a4ddd |
3001 | } |
56304f61 |
3002 | stash = gv_stashpvn(packname, packlen, TRUE); |
ac91690f |
3003 | goto fetch; |
a0d0e21e |
3004 | } |
3280af22 |
3005 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e |
3006 | } |
3007 | |
f0d43078 |
3008 | if (!ob || !(SvOBJECT(ob) |
3009 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) |
3010 | && SvOBJECT(ob)))) |
3011 | { |
f5d5a27c |
3012 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
3013 | name); |
f0d43078 |
3014 | } |
a0d0e21e |
3015 | |
56304f61 |
3016 | stash = SvSTASH(ob); |
a0d0e21e |
3017 | |
ac91690f |
3018 | fetch: |
f5d5a27c |
3019 | /* shortcut for simple names */ |
3020 | if (hashp) { |
3021 | HE* he = hv_fetch_ent(stash, meth, 0, *hashp); |
3022 | if (he) { |
3023 | gv = (GV*)HeVAL(he); |
3024 | if (isGV(gv) && GvCV(gv) && |
3025 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) |
3026 | return (SV*)GvCV(gv); |
3027 | } |
3028 | } |
3029 | |
ac91690f |
3030 | gv = gv_fetchmethod(stash, name); |
56304f61 |
3031 | if (!gv) { |
3032 | char* leaf = name; |
3033 | char* sep = Nullch; |
3034 | char* p; |
c1899e02 |
3035 | GV* gv; |
56304f61 |
3036 | |
3037 | for (p = name; *p; p++) { |
3038 | if (*p == '\'') |
3039 | sep = p, leaf = p + 1; |
3040 | else if (*p == ':' && *(p + 1) == ':') |
3041 | sep = p, leaf = p + 2; |
3042 | } |
3043 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { |
1d7c1841 |
3044 | packname = sep ? CopSTASHPV(PL_curcop) : HvNAME(stash); |
56304f61 |
3045 | packlen = strlen(packname); |
3046 | } |
3047 | else { |
3048 | packname = name; |
3049 | packlen = sep - name; |
3050 | } |
c1899e02 |
3051 | gv = gv_fetchpv(packname, 0, SVt_PVHV); |
3052 | if (gv && isGV(gv)) { |
3053 | Perl_croak(aTHX_ |
3054 | "Can't locate object method \"%s\" via package \"%s\"", |
3055 | leaf, packname); |
3056 | } |
3057 | else { |
3058 | Perl_croak(aTHX_ |
f6e565ef |
3059 | "Can't locate object method \"%s\" via package \"%s\"" |
c1899e02 |
3060 | " (perhaps you forgot to load \"%s\"?)", |
3061 | leaf, packname, packname); |
3062 | } |
56304f61 |
3063 | } |
f5d5a27c |
3064 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e |
3065 | } |
22239a37 |
3066 | |
51371543 |
3067 | #ifdef USE_THREADS |
3068 | static void |
3069 | unset_cvowner(pTHXo_ void *cvarg) |
3070 | { |
3071 | register CV* cv = (CV *) cvarg; |
51371543 |
3072 | |
bf49b057 |
3073 | DEBUG_S((PerlIO_printf(Perl_debug_log, "%p unsetting CvOWNER of %p:%s\n", |
51371543 |
3074 | thr, cv, SvPEEK((SV*)cv)))); |
3075 | MUTEX_LOCK(CvMUTEXP(cv)); |
3076 | DEBUG_S(if (CvDEPTH(cv) != 0) |
bf49b057 |
3077 | PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", |
51371543 |
3078 | CvDEPTH(cv));); |
3079 | assert(thr == CvOWNER(cv)); |
3080 | CvOWNER(cv) = 0; |
3081 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
3082 | SvREFCNT_dec(cv); |
3083 | } |
3084 | #endif /* USE_THREADS */ |