Commit | Line | Data |
a0d0e21e |
1 | /* pp_hot.c |
2 | * |
be3c0a43 |
3 | * Copyright (c) 1991-2002, 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 | |
4d1ff10f |
24 | #ifdef USE_5005THREADS |
acfe0abc |
25 | static void unset_cvowner(pTHX_ void *cvarg); |
4d1ff10f |
26 | #endif /* USE_5005THREADS */ |
11343788 |
27 | |
a0d0e21e |
28 | PP(pp_const) |
29 | { |
39644a26 |
30 | dSP; |
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 | { |
39644a26 |
46 | dSP; |
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 | { |
39644a26 |
74 | dSP; dTARGET; |
6050d10e |
75 | sv_copypv(TARG,TOPs); |
a0d0e21e |
76 | SETTARG; |
77 | RETURN; |
78 | } |
79 | |
80 | PP(pp_gv) |
81 | { |
39644a26 |
82 | dSP; |
1d7c1841 |
83 | XPUSHs((SV*)cGVOP_gv); |
a0d0e21e |
84 | RETURN; |
85 | } |
86 | |
87 | PP(pp_and) |
88 | { |
39644a26 |
89 | dSP; |
a0d0e21e |
90 | if (!SvTRUE(TOPs)) |
91 | RETURN; |
92 | else { |
93 | --SP; |
94 | RETURNOP(cLOGOP->op_other); |
95 | } |
96 | } |
97 | |
98 | PP(pp_sassign) |
99 | { |
39644a26 |
100 | dSP; dPOPTOPssrl; |
748a9306 |
101 | |
533c011a |
102 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
a0d0e21e |
103 | SV *temp; |
104 | temp = left; left = right; right = temp; |
105 | } |
3280af22 |
106 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e |
107 | TAINT_NOT; |
54310121 |
108 | SvSetMagicSV(right, left); |
a0d0e21e |
109 | SETs(right); |
110 | RETURN; |
111 | } |
112 | |
113 | PP(pp_cond_expr) |
114 | { |
39644a26 |
115 | dSP; |
a0d0e21e |
116 | if (SvTRUEx(POPs)) |
1a67a97c |
117 | RETURNOP(cLOGOP->op_other); |
a0d0e21e |
118 | else |
1a67a97c |
119 | RETURNOP(cLOGOP->op_next); |
a0d0e21e |
120 | } |
121 | |
122 | PP(pp_unstack) |
123 | { |
124 | I32 oldsave; |
125 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 |
126 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e |
127 | FREETMPS; |
3280af22 |
128 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e |
129 | LEAVE_SCOPE(oldsave); |
130 | return NORMAL; |
131 | } |
132 | |
a0d0e21e |
133 | PP(pp_concat) |
134 | { |
39644a26 |
135 | dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 |
136 | { |
137 | dPOPTOPssrl; |
8d6d96c1 |
138 | STRLEN llen; |
139 | char* lpv; |
140 | bool lbyte; |
141 | STRLEN rlen; |
142 | char* rpv = SvPV(right, rlen); /* mg_get(right) happens here */ |
143 | bool rbyte = !SvUTF8(right); |
144 | |
145 | if (TARG == right && right != left) { |
146 | right = sv_2mortal(newSVpvn(rpv, rlen)); |
147 | rpv = SvPV(right, rlen); /* no point setting UTF8 here */ |
148 | } |
7889fe52 |
149 | |
8d6d96c1 |
150 | if (TARG != left) { |
151 | lpv = SvPV(left, llen); /* mg_get(left) may happen here */ |
152 | lbyte = !SvUTF8(left); |
153 | sv_setpvn(TARG, lpv, llen); |
154 | if (!lbyte) |
155 | SvUTF8_on(TARG); |
156 | else |
157 | SvUTF8_off(TARG); |
158 | } |
159 | else { /* TARG == left */ |
160 | if (SvGMAGICAL(left)) |
161 | mg_get(left); /* or mg_get(left) may happen here */ |
162 | if (!SvOK(TARG)) |
163 | sv_setpv(left, ""); |
164 | lpv = SvPV_nomg(left, llen); |
165 | lbyte = !SvUTF8(left); |
166 | } |
a12c0f56 |
167 | |
fd15e783 |
168 | #if defined(PERL_Y2KWARN) |
169 | if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K) && SvOK(TARG)) { |
8d6d96c1 |
170 | if (llen >= 2 && lpv[llen - 2] == '1' && lpv[llen - 1] == '9' |
171 | && (llen == 2 || !isDIGIT(lpv[llen - 3]))) |
172 | { |
9014280d |
173 | Perl_warner(aTHX_ packWARN(WARN_Y2K), "Possible Y2K bug: %s", |
8d6d96c1 |
174 | "about to append an integer to '19'"); |
175 | } |
fd15e783 |
176 | } |
177 | #endif |
178 | |
8d6d96c1 |
179 | if (lbyte != rbyte) { |
180 | if (lbyte) |
181 | sv_utf8_upgrade_nomg(TARG); |
182 | else { |
183 | sv_utf8_upgrade_nomg(right); |
184 | rpv = SvPV(right, rlen); |
69b47968 |
185 | } |
a0d0e21e |
186 | } |
8d6d96c1 |
187 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 |
188 | |
a0d0e21e |
189 | SETTARG; |
190 | RETURN; |
748a9306 |
191 | } |
a0d0e21e |
192 | } |
193 | |
194 | PP(pp_padsv) |
195 | { |
39644a26 |
196 | dSP; dTARGET; |
a0d0e21e |
197 | XPUSHs(TARG); |
533c011a |
198 | if (PL_op->op_flags & OPf_MOD) { |
199 | if (PL_op->op_private & OPpLVAL_INTRO) |
200 | SAVECLEARSV(PL_curpad[PL_op->op_targ]); |
201 | else if (PL_op->op_private & OPpDEREF) { |
8ec5e241 |
202 | PUTBACK; |
533c011a |
203 | vivify_ref(PL_curpad[PL_op->op_targ], PL_op->op_private & OPpDEREF); |
8ec5e241 |
204 | SPAGAIN; |
205 | } |
4633a7c4 |
206 | } |
a0d0e21e |
207 | RETURN; |
208 | } |
209 | |
210 | PP(pp_readline) |
211 | { |
f5284f61 |
212 | tryAMAGICunTARGET(iter, 0); |
3280af22 |
213 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 |
214 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f |
215 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 |
216 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 |
217 | else { |
f5284f61 |
218 | dSP; |
219 | XPUSHs((SV*)PL_last_in_gv); |
220 | PUTBACK; |
cea2e8a9 |
221 | pp_rv2gv(); |
f5284f61 |
222 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 |
223 | } |
224 | } |
a0d0e21e |
225 | return do_readline(); |
226 | } |
227 | |
228 | PP(pp_eq) |
229 | { |
39644a26 |
230 | dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f |
231 | #ifndef NV_PRESERVES_UV |
232 | if (SvROK(TOPs) && SvROK(TOPm1s)) { |
e61d22ef |
233 | SP--; |
234 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); |
4c9fe80f |
235 | RETURN; |
236 | } |
237 | #endif |
28e5dec8 |
238 | #ifdef PERL_PRESERVE_IVUV |
239 | SvIV_please(TOPs); |
240 | if (SvIOK(TOPs)) { |
4c9fe80f |
241 | /* Unless the left argument is integer in range we are going |
242 | to have to use NV maths. Hence only attempt to coerce the |
243 | right argument if we know the left is integer. */ |
28e5dec8 |
244 | SvIV_please(TOPm1s); |
245 | if (SvIOK(TOPm1s)) { |
246 | bool auvok = SvUOK(TOPm1s); |
247 | bool buvok = SvUOK(TOPs); |
a12c0f56 |
248 | |
1605159e |
249 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
250 | /* Casting IV to UV before comparison isn't going to matter |
251 | on 2s complement. On 1s complement or sign&magnitude |
252 | (if we have any of them) it could to make negative zero |
253 | differ from normal zero. As I understand it. (Need to |
254 | check - is negative zero implementation defined behaviour |
255 | anyway?). NWC */ |
256 | UV buv = SvUVX(POPs); |
257 | UV auv = SvUVX(TOPs); |
28e5dec8 |
258 | |
28e5dec8 |
259 | SETs(boolSV(auv == buv)); |
260 | RETURN; |
261 | } |
262 | { /* ## Mixed IV,UV ## */ |
1605159e |
263 | SV *ivp, *uvp; |
28e5dec8 |
264 | IV iv; |
28e5dec8 |
265 | |
1605159e |
266 | /* == is commutative so doesn't matter which is left or right */ |
28e5dec8 |
267 | if (auvok) { |
1605159e |
268 | /* top of stack (b) is the iv */ |
269 | ivp = *SP; |
270 | uvp = *--SP; |
271 | } else { |
272 | uvp = *SP; |
273 | ivp = *--SP; |
274 | } |
275 | iv = SvIVX(ivp); |
276 | if (iv < 0) { |
277 | /* As uv is a UV, it's >0, so it cannot be == */ |
278 | SETs(&PL_sv_no); |
279 | RETURN; |
280 | } |
28e5dec8 |
281 | /* we know iv is >= 0 */ |
1605159e |
282 | SETs(boolSV((UV)iv == SvUVX(uvp))); |
28e5dec8 |
283 | RETURN; |
284 | } |
285 | } |
286 | } |
287 | #endif |
a0d0e21e |
288 | { |
289 | dPOPnv; |
54310121 |
290 | SETs(boolSV(TOPn == value)); |
a0d0e21e |
291 | RETURN; |
292 | } |
293 | } |
294 | |
295 | PP(pp_preinc) |
296 | { |
39644a26 |
297 | dSP; |
3510b4a1 |
298 | if (SvTYPE(TOPs) > SVt_PVLV) |
d470f89e |
299 | DIE(aTHX_ PL_no_modify); |
3510b4a1 |
300 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
301 | && SvIVX(TOPs) != IV_MAX) |
55497cff |
302 | { |
748a9306 |
303 | ++SvIVX(TOPs); |
55497cff |
304 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 |
305 | } |
28e5dec8 |
306 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 |
307 | sv_inc(TOPs); |
a0d0e21e |
308 | SvSETMAGIC(TOPs); |
309 | return NORMAL; |
310 | } |
311 | |
312 | PP(pp_or) |
313 | { |
39644a26 |
314 | dSP; |
a0d0e21e |
315 | if (SvTRUE(TOPs)) |
316 | RETURN; |
317 | else { |
318 | --SP; |
319 | RETURNOP(cLOGOP->op_other); |
320 | } |
321 | } |
322 | |
c963b151 |
323 | PP(pp_dor) |
324 | { |
325 | /* Most of this is lifted straight from pp_defined */ |
326 | dSP; |
327 | register SV* sv; |
328 | |
329 | sv = TOPs; |
330 | if (!sv || !SvANY(sv)) { |
331 | --SP; |
332 | RETURNOP(cLOGOP->op_other); |
333 | } |
334 | |
335 | switch (SvTYPE(sv)) { |
336 | case SVt_PVAV: |
337 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) |
338 | RETURN; |
339 | break; |
340 | case SVt_PVHV: |
341 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) |
342 | RETURN; |
343 | break; |
344 | case SVt_PVCV: |
345 | if (CvROOT(sv) || CvXSUB(sv)) |
346 | RETURN; |
347 | break; |
348 | default: |
349 | if (SvGMAGICAL(sv)) |
350 | mg_get(sv); |
351 | if (SvOK(sv)) |
352 | RETURN; |
353 | } |
354 | |
355 | --SP; |
356 | RETURNOP(cLOGOP->op_other); |
357 | } |
358 | |
a0d0e21e |
359 | PP(pp_add) |
360 | { |
39644a26 |
361 | dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 |
362 | useleft = USE_LEFT(TOPm1s); |
363 | #ifdef PERL_PRESERVE_IVUV |
364 | /* We must see if we can perform the addition with integers if possible, |
365 | as the integer code detects overflow while the NV code doesn't. |
366 | If either argument hasn't had a numeric conversion yet attempt to get |
367 | the IV. It's important to do this now, rather than just assuming that |
368 | it's not IOK as a PV of "9223372036854775806" may not take well to NV |
369 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to |
370 | integer in case the second argument is IV=9223372036854775806 |
371 | We can (now) rely on sv_2iv to do the right thing, only setting the |
372 | public IOK flag if the value in the NV (or PV) slot is truly integer. |
373 | |
374 | A side effect is that this also aggressively prefers integer maths over |
7dca457a |
375 | fp maths for integer values. |
376 | |
a00b5bd3 |
377 | How to detect overflow? |
7dca457a |
378 | |
379 | C 99 section 6.2.6.1 says |
380 | |
381 | The range of nonnegative values of a signed integer type is a subrange |
382 | of the corresponding unsigned integer type, and the representation of |
383 | the same value in each type is the same. A computation involving |
384 | unsigned operands can never overflow, because a result that cannot be |
385 | represented by the resulting unsigned integer type is reduced modulo |
386 | the number that is one greater than the largest value that can be |
387 | represented by the resulting type. |
388 | |
389 | (the 9th paragraph) |
390 | |
391 | which I read as "unsigned ints wrap." |
392 | |
393 | signed integer overflow seems to be classed as "exception condition" |
394 | |
395 | If an exceptional condition occurs during the evaluation of an |
396 | expression (that is, if the result is not mathematically defined or not |
397 | in the range of representable values for its type), the behavior is |
398 | undefined. |
399 | |
400 | (6.5, the 5th paragraph) |
401 | |
402 | I had assumed that on 2s complement machines signed arithmetic would |
403 | wrap, hence coded pp_add and pp_subtract on the assumption that |
404 | everything perl builds on would be happy. After much wailing and |
405 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, |
406 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- |
407 | unsigned code below is actually shorter than the old code. :-) |
408 | */ |
409 | |
28e5dec8 |
410 | SvIV_please(TOPs); |
411 | if (SvIOK(TOPs)) { |
412 | /* Unless the left argument is integer in range we are going to have to |
413 | use NV maths. Hence only attempt to coerce the right argument if |
414 | we know the left is integer. */ |
9c5ffd7c |
415 | register UV auv = 0; |
416 | bool auvok = FALSE; |
7dca457a |
417 | bool a_valid = 0; |
418 | |
28e5dec8 |
419 | if (!useleft) { |
7dca457a |
420 | auv = 0; |
421 | a_valid = auvok = 1; |
422 | /* left operand is undef, treat as zero. + 0 is identity, |
423 | Could SETi or SETu right now, but space optimise by not adding |
424 | lots of code to speed up what is probably a rarish case. */ |
425 | } else { |
426 | /* Left operand is defined, so is it IV? */ |
427 | SvIV_please(TOPm1s); |
428 | if (SvIOK(TOPm1s)) { |
429 | if ((auvok = SvUOK(TOPm1s))) |
430 | auv = SvUVX(TOPm1s); |
431 | else { |
432 | register IV aiv = SvIVX(TOPm1s); |
433 | if (aiv >= 0) { |
434 | auv = aiv; |
435 | auvok = 1; /* Now acting as a sign flag. */ |
436 | } else { /* 2s complement assumption for IV_MIN */ |
437 | auv = (UV)-aiv; |
438 | } |
439 | } |
440 | a_valid = 1; |
28e5dec8 |
441 | } |
442 | } |
7dca457a |
443 | if (a_valid) { |
444 | bool result_good = 0; |
445 | UV result; |
446 | register UV buv; |
28e5dec8 |
447 | bool buvok = SvUOK(TOPs); |
a00b5bd3 |
448 | |
7dca457a |
449 | if (buvok) |
450 | buv = SvUVX(TOPs); |
451 | else { |
452 | register IV biv = SvIVX(TOPs); |
453 | if (biv >= 0) { |
454 | buv = biv; |
455 | buvok = 1; |
456 | } else |
457 | buv = (UV)-biv; |
458 | } |
459 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, |
602f51c4 |
460 | else "IV" now, independent of how it came in. |
7dca457a |
461 | if a, b represents positive, A, B negative, a maps to -A etc |
462 | a + b => (a + b) |
463 | A + b => -(a - b) |
464 | a + B => (a - b) |
465 | A + B => -(a + b) |
466 | all UV maths. negate result if A negative. |
467 | add if signs same, subtract if signs differ. */ |
468 | |
469 | if (auvok ^ buvok) { |
470 | /* Signs differ. */ |
471 | if (auv >= buv) { |
472 | result = auv - buv; |
473 | /* Must get smaller */ |
474 | if (result <= auv) |
475 | result_good = 1; |
476 | } else { |
477 | result = buv - auv; |
478 | if (result <= buv) { |
479 | /* result really should be -(auv-buv). as its negation |
480 | of true value, need to swap our result flag */ |
481 | auvok = !auvok; |
482 | result_good = 1; |
28e5dec8 |
483 | } |
484 | } |
7dca457a |
485 | } else { |
486 | /* Signs same */ |
487 | result = auv + buv; |
488 | if (result >= auv) |
489 | result_good = 1; |
490 | } |
491 | if (result_good) { |
492 | SP--; |
493 | if (auvok) |
28e5dec8 |
494 | SETu( result ); |
7dca457a |
495 | else { |
496 | /* Negate result */ |
497 | if (result <= (UV)IV_MIN) |
498 | SETi( -(IV)result ); |
499 | else { |
500 | /* result valid, but out of range for IV. */ |
501 | SETn( -(NV)result ); |
28e5dec8 |
502 | } |
503 | } |
7dca457a |
504 | RETURN; |
505 | } /* Overflow, drop through to NVs. */ |
28e5dec8 |
506 | } |
507 | } |
508 | #endif |
a0d0e21e |
509 | { |
28e5dec8 |
510 | dPOPnv; |
511 | if (!useleft) { |
512 | /* left operand is undef, treat as zero. + 0.0 is identity. */ |
513 | SETn(value); |
514 | RETURN; |
515 | } |
516 | SETn( value + TOPn ); |
517 | RETURN; |
a0d0e21e |
518 | } |
519 | } |
520 | |
521 | PP(pp_aelemfast) |
522 | { |
39644a26 |
523 | dSP; |
1d7c1841 |
524 | AV *av = GvAV(cGVOP_gv); |
533c011a |
525 | U32 lval = PL_op->op_flags & OPf_MOD; |
526 | SV** svp = av_fetch(av, PL_op->op_private, lval); |
3280af22 |
527 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 |
528 | EXTEND(SP, 1); |
be6c24e0 |
529 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
530 | sv = sv_mortalcopy(sv); |
531 | PUSHs(sv); |
a0d0e21e |
532 | RETURN; |
533 | } |
534 | |
535 | PP(pp_join) |
536 | { |
39644a26 |
537 | dSP; dMARK; dTARGET; |
a0d0e21e |
538 | MARK++; |
539 | do_join(TARG, *MARK, MARK, SP); |
540 | SP = MARK; |
541 | SETs(TARG); |
542 | RETURN; |
543 | } |
544 | |
545 | PP(pp_pushre) |
546 | { |
39644a26 |
547 | dSP; |
44a8e56a |
548 | #ifdef DEBUGGING |
549 | /* |
550 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs |
551 | * will be enough to hold an OP*. |
552 | */ |
553 | SV* sv = sv_newmortal(); |
554 | sv_upgrade(sv, SVt_PVLV); |
555 | LvTYPE(sv) = '/'; |
533c011a |
556 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a |
557 | XPUSHs(sv); |
558 | #else |
6b88bc9c |
559 | XPUSHs((SV*)PL_op); |
44a8e56a |
560 | #endif |
a0d0e21e |
561 | RETURN; |
562 | } |
563 | |
564 | /* Oversized hot code. */ |
565 | |
566 | PP(pp_print) |
567 | { |
39644a26 |
568 | dSP; dMARK; dORIGMARK; |
a0d0e21e |
569 | GV *gv; |
570 | IO *io; |
760ac839 |
571 | register PerlIO *fp; |
236988e4 |
572 | MAGIC *mg; |
a0d0e21e |
573 | |
533c011a |
574 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
575 | gv = (GV*)*++MARK; |
576 | else |
3280af22 |
577 | gv = PL_defoutgv; |
5b468f54 |
578 | |
579 | if (gv && (io = GvIO(gv)) |
580 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) |
581 | { |
01bb7c6d |
582 | had_magic: |
68dc0745 |
583 | if (MARK == ORIGMARK) { |
1c846c1f |
584 | /* If using default handle then we need to make space to |
a60c0954 |
585 | * pass object as 1st arg, so move other args up ... |
586 | */ |
4352c267 |
587 | MEXTEND(SP, 1); |
68dc0745 |
588 | ++MARK; |
589 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); |
590 | ++SP; |
591 | } |
592 | PUSHMARK(MARK - 1); |
5b468f54 |
593 | *MARK = SvTIED_obj((SV*)io, mg); |
68dc0745 |
594 | PUTBACK; |
236988e4 |
595 | ENTER; |
864dbfa3 |
596 | call_method("PRINT", G_SCALAR); |
236988e4 |
597 | LEAVE; |
598 | SPAGAIN; |
68dc0745 |
599 | MARK = ORIGMARK + 1; |
600 | *MARK = *SP; |
601 | SP = MARK; |
236988e4 |
602 | RETURN; |
603 | } |
a0d0e21e |
604 | if (!(io = GvIO(gv))) { |
5b468f54 |
605 | if ((GvEGV(gv)) && (io = GvIO(GvEGV(gv))) |
606 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) |
01bb7c6d |
607 | goto had_magic; |
2dd78f96 |
608 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
609 | report_evil_fh(gv, io, PL_op->op_type); |
91487cfc |
610 | SETERRNO(EBADF,RMS$_IFI); |
a0d0e21e |
611 | goto just_say_no; |
612 | } |
613 | else if (!(fp = IoOFP(io))) { |
599cee73 |
614 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 |
615 | if (IoIFP(io)) |
616 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); |
2dd78f96 |
617 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f |
618 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e |
619 | } |
91487cfc |
620 | SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI); |
a0d0e21e |
621 | goto just_say_no; |
622 | } |
623 | else { |
624 | MARK++; |
7889fe52 |
625 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e |
626 | while (MARK <= SP) { |
627 | if (!do_print(*MARK, fp)) |
628 | break; |
629 | MARK++; |
630 | if (MARK <= SP) { |
7889fe52 |
631 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e |
632 | MARK--; |
633 | break; |
634 | } |
635 | } |
636 | } |
637 | } |
638 | else { |
639 | while (MARK <= SP) { |
640 | if (!do_print(*MARK, fp)) |
641 | break; |
642 | MARK++; |
643 | } |
644 | } |
645 | if (MARK <= SP) |
646 | goto just_say_no; |
647 | else { |
7889fe52 |
648 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
649 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
a0d0e21e |
650 | goto just_say_no; |
651 | |
652 | if (IoFLAGS(io) & IOf_FLUSH) |
760ac839 |
653 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e |
654 | goto just_say_no; |
655 | } |
656 | } |
657 | SP = ORIGMARK; |
3280af22 |
658 | PUSHs(&PL_sv_yes); |
a0d0e21e |
659 | RETURN; |
660 | |
661 | just_say_no: |
662 | SP = ORIGMARK; |
3280af22 |
663 | PUSHs(&PL_sv_undef); |
a0d0e21e |
664 | RETURN; |
665 | } |
666 | |
667 | PP(pp_rv2av) |
668 | { |
39644a26 |
669 | dSP; dTOPss; |
a0d0e21e |
670 | AV *av; |
671 | |
672 | if (SvROK(sv)) { |
673 | wasref: |
f5284f61 |
674 | tryAMAGICunDEREF(to_av); |
675 | |
a0d0e21e |
676 | av = (AV*)SvRV(sv); |
677 | if (SvTYPE(av) != SVt_PVAV) |
cea2e8a9 |
678 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a |
679 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
680 | SETs((SV*)av); |
a0d0e21e |
681 | RETURN; |
682 | } |
78f9721b |
683 | else if (LVRET) { |
684 | if (GIMME == G_SCALAR) |
685 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); |
686 | SETs((SV*)av); |
687 | RETURN; |
688 | } |
a0d0e21e |
689 | } |
690 | else { |
691 | if (SvTYPE(sv) == SVt_PVAV) { |
692 | av = (AV*)sv; |
533c011a |
693 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
694 | SETs((SV*)av); |
a0d0e21e |
695 | RETURN; |
696 | } |
78f9721b |
697 | else if (LVRET) { |
698 | if (GIMME == G_SCALAR) |
699 | Perl_croak(aTHX_ "Can't return array to lvalue" |
700 | " scalar context"); |
701 | SETs((SV*)av); |
702 | RETURN; |
703 | } |
a0d0e21e |
704 | } |
705 | else { |
67955e0c |
706 | GV *gv; |
1c846c1f |
707 | |
a0d0e21e |
708 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
709 | char *sym; |
c9d5ac95 |
710 | STRLEN len; |
748a9306 |
711 | |
a0d0e21e |
712 | if (SvGMAGICAL(sv)) { |
713 | mg_get(sv); |
714 | if (SvROK(sv)) |
715 | goto wasref; |
716 | } |
717 | if (!SvOK(sv)) { |
533c011a |
718 | if (PL_op->op_flags & OPf_REF || |
719 | PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
720 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 |
721 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 |
722 | report_uninit(); |
f5284f61 |
723 | if (GIMME == G_ARRAY) { |
c2444246 |
724 | (void)POPs; |
4633a7c4 |
725 | RETURN; |
f5284f61 |
726 | } |
727 | RETSETUNDEF; |
a0d0e21e |
728 | } |
c9d5ac95 |
729 | sym = SvPV(sv,len); |
35cd451c |
730 | if ((PL_op->op_flags & OPf_SPECIAL) && |
731 | !(PL_op->op_flags & OPf_MOD)) |
732 | { |
733 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV); |
c9d5ac95 |
734 | if (!gv |
735 | && (!is_gv_magical(sym,len,0) |
736 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV)))) |
737 | { |
35cd451c |
738 | RETSETUNDEF; |
c9d5ac95 |
739 | } |
35cd451c |
740 | } |
741 | else { |
742 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
743 | DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); |
35cd451c |
744 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
745 | } |
746 | } |
747 | else { |
67955e0c |
748 | gv = (GV*)sv; |
a0d0e21e |
749 | } |
67955e0c |
750 | av = GvAVn(gv); |
533c011a |
751 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c |
752 | av = save_ary(gv); |
533c011a |
753 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
754 | SETs((SV*)av); |
a0d0e21e |
755 | RETURN; |
756 | } |
78f9721b |
757 | else if (LVRET) { |
758 | if (GIMME == G_SCALAR) |
759 | Perl_croak(aTHX_ "Can't return array to lvalue" |
760 | " scalar context"); |
761 | SETs((SV*)av); |
762 | RETURN; |
763 | } |
a0d0e21e |
764 | } |
765 | } |
766 | |
767 | if (GIMME == G_ARRAY) { |
768 | I32 maxarg = AvFILL(av) + 1; |
c2444246 |
769 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f |
770 | EXTEND(SP, maxarg); |
93965878 |
771 | if (SvRMAGICAL(av)) { |
1c846c1f |
772 | U32 i; |
eb160463 |
773 | for (i=0; i < (U32)maxarg; i++) { |
93965878 |
774 | SV **svp = av_fetch(av, i, FALSE); |
3280af22 |
775 | SP[i+1] = (svp) ? *svp : &PL_sv_undef; |
93965878 |
776 | } |
1c846c1f |
777 | } |
93965878 |
778 | else { |
779 | Copy(AvARRAY(av), SP+1, maxarg, SV*); |
780 | } |
a0d0e21e |
781 | SP += maxarg; |
782 | } |
783 | else { |
784 | dTARGET; |
785 | I32 maxarg = AvFILL(av) + 1; |
f5284f61 |
786 | SETi(maxarg); |
a0d0e21e |
787 | } |
788 | RETURN; |
789 | } |
790 | |
791 | PP(pp_rv2hv) |
792 | { |
39644a26 |
793 | dSP; dTOPss; |
a0d0e21e |
794 | HV *hv; |
795 | |
796 | if (SvROK(sv)) { |
797 | wasref: |
f5284f61 |
798 | tryAMAGICunDEREF(to_hv); |
799 | |
a0d0e21e |
800 | hv = (HV*)SvRV(sv); |
6d822dc4 |
801 | if (SvTYPE(hv) != SVt_PVHV) |
cea2e8a9 |
802 | DIE(aTHX_ "Not a HASH reference"); |
533c011a |
803 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
804 | SETs((SV*)hv); |
805 | RETURN; |
806 | } |
78f9721b |
807 | else if (LVRET) { |
808 | if (GIMME == G_SCALAR) |
809 | Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); |
810 | SETs((SV*)hv); |
811 | RETURN; |
812 | } |
a0d0e21e |
813 | } |
814 | else { |
6d822dc4 |
815 | if (SvTYPE(sv) == SVt_PVHV) { |
a0d0e21e |
816 | hv = (HV*)sv; |
533c011a |
817 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
818 | SETs((SV*)hv); |
819 | RETURN; |
820 | } |
78f9721b |
821 | else if (LVRET) { |
822 | if (GIMME == G_SCALAR) |
823 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
824 | " scalar context"); |
825 | SETs((SV*)hv); |
826 | RETURN; |
827 | } |
a0d0e21e |
828 | } |
829 | else { |
67955e0c |
830 | GV *gv; |
1c846c1f |
831 | |
a0d0e21e |
832 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
833 | char *sym; |
c9d5ac95 |
834 | STRLEN len; |
748a9306 |
835 | |
a0d0e21e |
836 | if (SvGMAGICAL(sv)) { |
837 | mg_get(sv); |
838 | if (SvROK(sv)) |
839 | goto wasref; |
840 | } |
841 | if (!SvOK(sv)) { |
533c011a |
842 | if (PL_op->op_flags & OPf_REF || |
843 | PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
844 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 |
845 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 |
846 | report_uninit(); |
4633a7c4 |
847 | if (GIMME == G_ARRAY) { |
848 | SP--; |
849 | RETURN; |
850 | } |
a0d0e21e |
851 | RETSETUNDEF; |
852 | } |
c9d5ac95 |
853 | sym = SvPV(sv,len); |
35cd451c |
854 | if ((PL_op->op_flags & OPf_SPECIAL) && |
855 | !(PL_op->op_flags & OPf_MOD)) |
856 | { |
857 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV); |
c9d5ac95 |
858 | if (!gv |
859 | && (!is_gv_magical(sym,len,0) |
860 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV)))) |
861 | { |
35cd451c |
862 | RETSETUNDEF; |
c9d5ac95 |
863 | } |
35cd451c |
864 | } |
865 | else { |
866 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
867 | DIE(aTHX_ PL_no_symref, sym, "a HASH"); |
35cd451c |
868 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
869 | } |
870 | } |
871 | else { |
67955e0c |
872 | gv = (GV*)sv; |
a0d0e21e |
873 | } |
67955e0c |
874 | hv = GvHVn(gv); |
533c011a |
875 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c |
876 | hv = save_hash(gv); |
533c011a |
877 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
878 | SETs((SV*)hv); |
879 | RETURN; |
880 | } |
78f9721b |
881 | else if (LVRET) { |
882 | if (GIMME == G_SCALAR) |
883 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
884 | " scalar context"); |
885 | SETs((SV*)hv); |
886 | RETURN; |
887 | } |
a0d0e21e |
888 | } |
889 | } |
890 | |
891 | if (GIMME == G_ARRAY) { /* array wanted */ |
3280af22 |
892 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 |
893 | return do_kv(); |
a0d0e21e |
894 | } |
895 | else { |
896 | dTARGET; |
b9c39e73 |
897 | if (HvFILL(hv)) |
57def98f |
898 | Perl_sv_setpvf(aTHX_ TARG, "%"IVdf"/%"IVdf, |
899 | (IV)HvFILL(hv), (IV)HvMAX(hv) + 1); |
a0d0e21e |
900 | else |
901 | sv_setiv(TARG, 0); |
c750a3ec |
902 | |
a0d0e21e |
903 | SETTARG; |
904 | RETURN; |
905 | } |
906 | } |
907 | |
10c8fecd |
908 | STATIC void |
909 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) |
910 | { |
911 | if (*relem) { |
912 | SV *tmpstr; |
6d822dc4 |
913 | HE *didstore; |
914 | |
915 | if (ckWARN(WARN_MISC)) { |
10c8fecd |
916 | if (relem == firstrelem && |
917 | SvROK(*relem) && |
918 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || |
919 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) |
920 | { |
9014280d |
921 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd |
922 | "Reference found where even-sized list expected"); |
923 | } |
924 | else |
9014280d |
925 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd |
926 | "Odd number of elements in hash assignment"); |
927 | } |
6d822dc4 |
928 | |
929 | tmpstr = NEWSV(29,0); |
930 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
931 | if (SvMAGICAL(hash)) { |
932 | if (SvSMAGICAL(tmpstr)) |
933 | mg_set(tmpstr); |
934 | if (!didstore) |
935 | sv_2mortal(tmpstr); |
936 | } |
937 | TAINT_NOT; |
10c8fecd |
938 | } |
939 | } |
940 | |
a0d0e21e |
941 | PP(pp_aassign) |
942 | { |
39644a26 |
943 | dSP; |
3280af22 |
944 | SV **lastlelem = PL_stack_sp; |
945 | SV **lastrelem = PL_stack_base + POPMARK; |
946 | SV **firstrelem = PL_stack_base + POPMARK + 1; |
a0d0e21e |
947 | SV **firstlelem = lastrelem + 1; |
948 | |
949 | register SV **relem; |
950 | register SV **lelem; |
951 | |
952 | register SV *sv; |
953 | register AV *ary; |
954 | |
54310121 |
955 | I32 gimme; |
a0d0e21e |
956 | HV *hash; |
957 | I32 i; |
958 | int magic; |
959 | |
3280af22 |
960 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
a0d0e21e |
961 | |
962 | /* If there's a common identifier on both sides we have to take |
963 | * special care that assigning the identifier on the left doesn't |
964 | * clobber a value on the right that's used later in the list. |
965 | */ |
10c8fecd |
966 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 |
967 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd |
968 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
969 | /*SUPPRESS 560*/ |
155aba94 |
970 | if ((sv = *relem)) { |
a1f49e72 |
971 | TAINT_NOT; /* Each item is independent */ |
10c8fecd |
972 | *relem = sv_mortalcopy(sv); |
a1f49e72 |
973 | } |
10c8fecd |
974 | } |
a0d0e21e |
975 | } |
976 | |
977 | relem = firstrelem; |
978 | lelem = firstlelem; |
979 | ary = Null(AV*); |
980 | hash = Null(HV*); |
10c8fecd |
981 | |
a0d0e21e |
982 | while (lelem <= lastlelem) { |
bbce6d69 |
983 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e |
984 | sv = *lelem++; |
985 | switch (SvTYPE(sv)) { |
986 | case SVt_PVAV: |
987 | ary = (AV*)sv; |
748a9306 |
988 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e |
989 | av_clear(ary); |
7e42bd57 |
990 | av_extend(ary, lastrelem - relem); |
a0d0e21e |
991 | i = 0; |
992 | while (relem <= lastrelem) { /* gobble up all the rest */ |
5117ca91 |
993 | SV **didstore; |
a0d0e21e |
994 | sv = NEWSV(28,0); |
995 | assert(*relem); |
996 | sv_setsv(sv,*relem); |
997 | *(relem++) = sv; |
5117ca91 |
998 | didstore = av_store(ary,i++,sv); |
999 | if (magic) { |
fb73857a |
1000 | if (SvSMAGICAL(sv)) |
1001 | mg_set(sv); |
5117ca91 |
1002 | if (!didstore) |
8127e0e3 |
1003 | sv_2mortal(sv); |
5117ca91 |
1004 | } |
bbce6d69 |
1005 | TAINT_NOT; |
a0d0e21e |
1006 | } |
1007 | break; |
10c8fecd |
1008 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e |
1009 | SV *tmpstr; |
1010 | |
1011 | hash = (HV*)sv; |
748a9306 |
1012 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e |
1013 | hv_clear(hash); |
1014 | |
1015 | while (relem < lastrelem) { /* gobble up all the rest */ |
5117ca91 |
1016 | HE *didstore; |
4633a7c4 |
1017 | if (*relem) |
a0d0e21e |
1018 | sv = *(relem++); |
4633a7c4 |
1019 | else |
3280af22 |
1020 | sv = &PL_sv_no, relem++; |
a0d0e21e |
1021 | tmpstr = NEWSV(29,0); |
1022 | if (*relem) |
1023 | sv_setsv(tmpstr,*relem); /* value */ |
1024 | *(relem++) = tmpstr; |
5117ca91 |
1025 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1026 | if (magic) { |
fb73857a |
1027 | if (SvSMAGICAL(tmpstr)) |
1028 | mg_set(tmpstr); |
5117ca91 |
1029 | if (!didstore) |
8127e0e3 |
1030 | sv_2mortal(tmpstr); |
5117ca91 |
1031 | } |
bbce6d69 |
1032 | TAINT_NOT; |
8e07c86e |
1033 | } |
6a0deba8 |
1034 | if (relem == lastrelem) { |
10c8fecd |
1035 | do_oddball(hash, relem, firstrelem); |
6a0deba8 |
1036 | relem++; |
1930e939 |
1037 | } |
a0d0e21e |
1038 | } |
1039 | break; |
1040 | default: |
6fc92669 |
1041 | if (SvIMMORTAL(sv)) { |
1042 | if (relem <= lastrelem) |
1043 | relem++; |
1044 | break; |
a0d0e21e |
1045 | } |
1046 | if (relem <= lastrelem) { |
1047 | sv_setsv(sv, *relem); |
1048 | *(relem++) = sv; |
1049 | } |
1050 | else |
3280af22 |
1051 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e |
1052 | SvSETMAGIC(sv); |
1053 | break; |
1054 | } |
1055 | } |
3280af22 |
1056 | if (PL_delaymagic & ~DM_DELAY) { |
1057 | if (PL_delaymagic & DM_UID) { |
a0d0e21e |
1058 | #ifdef HAS_SETRESUID |
b28d0864 |
1059 | (void)setresuid(PL_uid,PL_euid,(Uid_t)-1); |
56febc5e |
1060 | #else |
1061 | # ifdef HAS_SETREUID |
3280af22 |
1062 | (void)setreuid(PL_uid,PL_euid); |
56febc5e |
1063 | # else |
1064 | # ifdef HAS_SETRUID |
b28d0864 |
1065 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1066 | (void)setruid(PL_uid); |
1067 | PL_delaymagic &= ~DM_RUID; |
a0d0e21e |
1068 | } |
56febc5e |
1069 | # endif /* HAS_SETRUID */ |
1070 | # ifdef HAS_SETEUID |
b28d0864 |
1071 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
1072 | (void)seteuid(PL_uid); |
1073 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e |
1074 | } |
56febc5e |
1075 | # endif /* HAS_SETEUID */ |
b28d0864 |
1076 | if (PL_delaymagic & DM_UID) { |
1077 | if (PL_uid != PL_euid) |
cea2e8a9 |
1078 | DIE(aTHX_ "No setreuid available"); |
b28d0864 |
1079 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e |
1080 | } |
56febc5e |
1081 | # endif /* HAS_SETREUID */ |
1082 | #endif /* HAS_SETRESUID */ |
d8eceb89 |
1083 | PL_uid = PerlProc_getuid(); |
1084 | PL_euid = PerlProc_geteuid(); |
a0d0e21e |
1085 | } |
3280af22 |
1086 | if (PL_delaymagic & DM_GID) { |
a0d0e21e |
1087 | #ifdef HAS_SETRESGID |
b28d0864 |
1088 | (void)setresgid(PL_gid,PL_egid,(Gid_t)-1); |
56febc5e |
1089 | #else |
1090 | # ifdef HAS_SETREGID |
3280af22 |
1091 | (void)setregid(PL_gid,PL_egid); |
56febc5e |
1092 | # else |
1093 | # ifdef HAS_SETRGID |
b28d0864 |
1094 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1095 | (void)setrgid(PL_gid); |
1096 | PL_delaymagic &= ~DM_RGID; |
a0d0e21e |
1097 | } |
56febc5e |
1098 | # endif /* HAS_SETRGID */ |
1099 | # ifdef HAS_SETEGID |
b28d0864 |
1100 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
1101 | (void)setegid(PL_gid); |
1102 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e |
1103 | } |
56febc5e |
1104 | # endif /* HAS_SETEGID */ |
b28d0864 |
1105 | if (PL_delaymagic & DM_GID) { |
1106 | if (PL_gid != PL_egid) |
cea2e8a9 |
1107 | DIE(aTHX_ "No setregid available"); |
b28d0864 |
1108 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e |
1109 | } |
56febc5e |
1110 | # endif /* HAS_SETREGID */ |
1111 | #endif /* HAS_SETRESGID */ |
d8eceb89 |
1112 | PL_gid = PerlProc_getgid(); |
1113 | PL_egid = PerlProc_getegid(); |
a0d0e21e |
1114 | } |
3280af22 |
1115 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e |
1116 | } |
3280af22 |
1117 | PL_delaymagic = 0; |
54310121 |
1118 | |
1119 | gimme = GIMME_V; |
1120 | if (gimme == G_VOID) |
1121 | SP = firstrelem - 1; |
1122 | else if (gimme == G_SCALAR) { |
1123 | dTARGET; |
1124 | SP = firstrelem; |
1125 | SETi(lastrelem - firstrelem + 1); |
1126 | } |
1127 | else { |
a0d0e21e |
1128 | if (ary || hash) |
1129 | SP = lastrelem; |
1130 | else |
1131 | SP = firstrelem + (lastlelem - firstlelem); |
0c8c7a05 |
1132 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc |
1133 | while (relem <= SP) |
3280af22 |
1134 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e |
1135 | } |
54310121 |
1136 | RETURN; |
a0d0e21e |
1137 | } |
1138 | |
8782bef2 |
1139 | PP(pp_qr) |
1140 | { |
39644a26 |
1141 | dSP; |
8782bef2 |
1142 | register PMOP *pm = cPMOP; |
1143 | SV *rv = sv_newmortal(); |
57668c4d |
1144 | SV *sv = newSVrv(rv, "Regexp"); |
e08e52cf |
1145 | if (pm->op_pmdynflags & PMdf_TAINTED) |
1146 | SvTAINTED_on(rv); |
aaa362c4 |
1147 | sv_magic(sv,(SV*)ReREFCNT_inc(PM_GETRE(pm)), PERL_MAGIC_qr,0,0); |
8782bef2 |
1148 | RETURNX(PUSHs(rv)); |
1149 | } |
1150 | |
a0d0e21e |
1151 | PP(pp_match) |
1152 | { |
39644a26 |
1153 | dSP; dTARG; |
a0d0e21e |
1154 | register PMOP *pm = cPMOP; |
d65afb4b |
1155 | PMOP *dynpm = pm; |
a0d0e21e |
1156 | register char *t; |
1157 | register char *s; |
1158 | char *strend; |
1159 | I32 global; |
f722798b |
1160 | I32 r_flags = REXEC_CHECKED; |
1161 | char *truebase; /* Start of string */ |
aaa362c4 |
1162 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b |
1163 | bool rxtainted; |
a0d0e21e |
1164 | I32 gimme = GIMME; |
1165 | STRLEN len; |
748a9306 |
1166 | I32 minmatch = 0; |
3280af22 |
1167 | I32 oldsave = PL_savestack_ix; |
f86702cc |
1168 | I32 update_minmatch = 1; |
e60df1fa |
1169 | I32 had_zerolen = 0; |
a0d0e21e |
1170 | |
533c011a |
1171 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
1172 | TARG = POPs; |
1173 | else { |
54b9620d |
1174 | TARG = DEFSV; |
a0d0e21e |
1175 | EXTEND(SP,1); |
1176 | } |
d9f424b2 |
1177 | |
c277df42 |
1178 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e |
1179 | s = SvPV(TARG, len); |
1180 | strend = s + len; |
1181 | if (!s) |
2269b42e |
1182 | DIE(aTHX_ "panic: pp_match"); |
b3eb6a9b |
1183 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 |
1184 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba |
1185 | TAINT_NOT; |
a0d0e21e |
1186 | |
53c4c00c |
1187 | PL_reg_match_utf8 = DO_UTF8(TARG); |
d9f424b2 |
1188 | |
d65afb4b |
1189 | /* PMdf_USED is set after a ?? matches once */ |
48c036b1 |
1190 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 |
1191 | failure: |
a0d0e21e |
1192 | if (gimme == G_ARRAY) |
1193 | RETURN; |
1194 | RETPUSHNO; |
1195 | } |
1196 | |
d65afb4b |
1197 | /* empty pattern special-cased to use last successful pattern if possible */ |
3280af22 |
1198 | if (!rx->prelen && PL_curpm) { |
1199 | pm = PL_curpm; |
aaa362c4 |
1200 | rx = PM_GETRE(pm); |
a0d0e21e |
1201 | } |
d65afb4b |
1202 | |
eb160463 |
1203 | if (rx->minlen > (I32)len) |
d65afb4b |
1204 | goto failure; |
c277df42 |
1205 | |
a0d0e21e |
1206 | truebase = t = s; |
ad94a511 |
1207 | |
1208 | /* XXXX What part of this is needed with true \G-support? */ |
d65afb4b |
1209 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
cf93c79d |
1210 | rx->startp[0] = -1; |
a0d0e21e |
1211 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 |
1212 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 |
1213 | if (mg && mg->mg_len >= 0) { |
b7a35066 |
1214 | if (!(rx->reganch & ROPT_GPOS_SEEN)) |
1c846c1f |
1215 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e |
1216 | else if (rx->reganch & ROPT_ANCH_GPOS) { |
1217 | r_flags |= REXEC_IGNOREPOS; |
1c846c1f |
1218 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e |
1219 | } |
748a9306 |
1220 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc |
1221 | update_minmatch = 0; |
748a9306 |
1222 | } |
a0d0e21e |
1223 | } |
1224 | } |
14977893 |
1225 | if ((!global && rx->nparens) |
1226 | || SvTEMP(TARG) || PL_sawampersand) |
1227 | r_flags |= REXEC_COPY_STR; |
1c846c1f |
1228 | if (SvSCREAM(TARG)) |
22e551b9 |
1229 | r_flags |= REXEC_SCREAM; |
1230 | |
a0d0e21e |
1231 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 |
1232 | SAVEINT(PL_multiline); |
1233 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; |
a0d0e21e |
1234 | } |
1235 | |
1236 | play_it_again: |
cf93c79d |
1237 | if (global && rx->startp[0] != -1) { |
1238 | t = s = rx->endp[0] + truebase; |
d9f97599 |
1239 | if ((s + rx->minlen) > strend) |
a0d0e21e |
1240 | goto nope; |
f86702cc |
1241 | if (update_minmatch++) |
e60df1fa |
1242 | minmatch = had_zerolen; |
a0d0e21e |
1243 | } |
60aeb6fd |
1244 | if (rx->reganch & RE_USE_INTUIT && |
1245 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { |
ee0b7718 |
1246 | PL_bostr = truebase; |
f722798b |
1247 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1248 | |
1249 | if (!s) |
1250 | goto nope; |
1251 | if ( (rx->reganch & ROPT_CHECK_ALL) |
14977893 |
1252 | && !PL_sawampersand |
f722798b |
1253 | && ((rx->reganch & ROPT_NOSCAN) |
1254 | || !((rx->reganch & RE_INTUIT_TAIL) |
05b4157f |
1255 | && (r_flags & REXEC_SCREAM))) |
1256 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ |
f722798b |
1257 | goto yup; |
a0d0e21e |
1258 | } |
cea2e8a9 |
1259 | if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 |
1260 | { |
3280af22 |
1261 | PL_curpm = pm; |
d65afb4b |
1262 | if (dynpm->op_pmflags & PMf_ONCE) |
1263 | dynpm->op_pmdynflags |= PMdf_USED; |
a0d0e21e |
1264 | goto gotcha; |
1265 | } |
1266 | else |
1267 | goto ret_no; |
1268 | /*NOTREACHED*/ |
1269 | |
1270 | gotcha: |
72311751 |
1271 | if (rxtainted) |
1272 | RX_MATCH_TAINTED_on(rx); |
1273 | TAINT_IF(RX_MATCH_TAINTED(rx)); |
a0d0e21e |
1274 | if (gimme == G_ARRAY) { |
ffc61ed2 |
1275 | I32 nparens, i, len; |
a0d0e21e |
1276 | |
ffc61ed2 |
1277 | nparens = rx->nparens; |
1278 | if (global && !nparens) |
a0d0e21e |
1279 | i = 1; |
1280 | else |
1281 | i = 0; |
c277df42 |
1282 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 |
1283 | EXTEND(SP, nparens + i); |
1284 | EXTEND_MORTAL(nparens + i); |
1285 | for (i = !i; i <= nparens; i++) { |
a0d0e21e |
1286 | PUSHs(sv_newmortal()); |
1287 | /*SUPPRESS 560*/ |
cf93c79d |
1288 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
1289 | len = rx->endp[i] - rx->startp[i]; |
290deeac |
1290 | if (rx->endp[i] < 0 || rx->startp[i] < 0 || |
1291 | len < 0 || len > strend - s) |
1292 | DIE(aTHX_ "panic: pp_match start/end pointers"); |
cf93c79d |
1293 | s = rx->startp[i] + truebase; |
a0d0e21e |
1294 | sv_setpvn(*SP, s, len); |
cce850e4 |
1295 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd |
1296 | SvUTF8_on(*SP); |
a0d0e21e |
1297 | } |
1298 | } |
1299 | if (global) { |
d65afb4b |
1300 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
0af80b60 |
1301 | MAGIC* mg = 0; |
1302 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
1303 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
1304 | if (!mg) { |
1305 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1306 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
1307 | } |
1308 | if (rx->startp[0] != -1) { |
1309 | mg->mg_len = rx->endp[0]; |
1310 | if (rx->startp[0] == rx->endp[0]) |
1311 | mg->mg_flags |= MGf_MINMATCH; |
1312 | else |
1313 | mg->mg_flags &= ~MGf_MINMATCH; |
1314 | } |
1315 | } |
cf93c79d |
1316 | had_zerolen = (rx->startp[0] != -1 |
1317 | && rx->startp[0] == rx->endp[0]); |
c277df42 |
1318 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d |
1319 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e |
1320 | goto play_it_again; |
1321 | } |
ffc61ed2 |
1322 | else if (!nparens) |
bde848c5 |
1323 | XPUSHs(&PL_sv_yes); |
4633a7c4 |
1324 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1325 | RETURN; |
1326 | } |
1327 | else { |
1328 | if (global) { |
1329 | MAGIC* mg = 0; |
1330 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
14befaf4 |
1331 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e |
1332 | if (!mg) { |
14befaf4 |
1333 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1334 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e |
1335 | } |
cf93c79d |
1336 | if (rx->startp[0] != -1) { |
1337 | mg->mg_len = rx->endp[0]; |
d9f97599 |
1338 | if (rx->startp[0] == rx->endp[0]) |
748a9306 |
1339 | mg->mg_flags |= MGf_MINMATCH; |
1340 | else |
1341 | mg->mg_flags &= ~MGf_MINMATCH; |
1342 | } |
a0d0e21e |
1343 | } |
4633a7c4 |
1344 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1345 | RETPUSHYES; |
1346 | } |
1347 | |
f722798b |
1348 | yup: /* Confirmed by INTUIT */ |
72311751 |
1349 | if (rxtainted) |
1350 | RX_MATCH_TAINTED_on(rx); |
1351 | TAINT_IF(RX_MATCH_TAINTED(rx)); |
3280af22 |
1352 | PL_curpm = pm; |
d65afb4b |
1353 | if (dynpm->op_pmflags & PMf_ONCE) |
1354 | dynpm->op_pmdynflags |= PMdf_USED; |
cf93c79d |
1355 | if (RX_MATCH_COPIED(rx)) |
1356 | Safefree(rx->subbeg); |
1357 | RX_MATCH_COPIED_off(rx); |
1358 | rx->subbeg = Nullch; |
a0d0e21e |
1359 | if (global) { |
d9f97599 |
1360 | rx->subbeg = truebase; |
cf93c79d |
1361 | rx->startp[0] = s - truebase; |
53c4c00c |
1362 | if (PL_reg_match_utf8) { |
60aeb6fd |
1363 | char *t = (char*)utf8_hop((U8*)s, rx->minlen); |
1364 | rx->endp[0] = t - truebase; |
1365 | } |
1366 | else { |
1367 | rx->endp[0] = s - truebase + rx->minlen; |
1368 | } |
cf93c79d |
1369 | rx->sublen = strend - truebase; |
a0d0e21e |
1370 | goto gotcha; |
1c846c1f |
1371 | } |
14977893 |
1372 | if (PL_sawampersand) { |
1373 | I32 off; |
1374 | |
1375 | rx->subbeg = savepvn(t, strend - t); |
1376 | rx->sublen = strend - t; |
1377 | RX_MATCH_COPIED_on(rx); |
1378 | off = rx->startp[0] = s - t; |
1379 | rx->endp[0] = off + rx->minlen; |
1380 | } |
1381 | else { /* startp/endp are used by @- @+. */ |
1382 | rx->startp[0] = s - truebase; |
1383 | rx->endp[0] = s - truebase + rx->minlen; |
1384 | } |
fc19f8d0 |
1385 | rx->nparens = rx->lastparen = 0; /* used by @- and @+ */ |
4633a7c4 |
1386 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1387 | RETPUSHYES; |
1388 | |
1389 | nope: |
a0d0e21e |
1390 | ret_no: |
d65afb4b |
1391 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e |
1392 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 |
1393 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e |
1394 | if (mg) |
565764a8 |
1395 | mg->mg_len = -1; |
a0d0e21e |
1396 | } |
1397 | } |
4633a7c4 |
1398 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1399 | if (gimme == G_ARRAY) |
1400 | RETURN; |
1401 | RETPUSHNO; |
1402 | } |
1403 | |
1404 | OP * |
864dbfa3 |
1405 | Perl_do_readline(pTHX) |
a0d0e21e |
1406 | { |
1407 | dSP; dTARGETSTACKED; |
1408 | register SV *sv; |
1409 | STRLEN tmplen = 0; |
1410 | STRLEN offset; |
760ac839 |
1411 | PerlIO *fp; |
3280af22 |
1412 | register IO *io = GvIO(PL_last_in_gv); |
533c011a |
1413 | register I32 type = PL_op->op_type; |
54310121 |
1414 | I32 gimme = GIMME_V; |
e79b0511 |
1415 | MAGIC *mg; |
a0d0e21e |
1416 | |
5b468f54 |
1417 | if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { |
e79b0511 |
1418 | PUSHMARK(SP); |
5b468f54 |
1419 | XPUSHs(SvTIED_obj((SV*)io, mg)); |
e79b0511 |
1420 | PUTBACK; |
1421 | ENTER; |
864dbfa3 |
1422 | call_method("READLINE", gimme); |
e79b0511 |
1423 | LEAVE; |
1424 | SPAGAIN; |
0b7c7b4f |
1425 | if (gimme == G_SCALAR) { |
1426 | SV* result = POPs; |
1427 | SvSetSV_nosteal(TARG, result); |
1428 | PUSHTARG; |
1429 | } |
e79b0511 |
1430 | RETURN; |
1431 | } |
a0d0e21e |
1432 | fp = Nullfp; |
1433 | if (io) { |
1434 | fp = IoIFP(io); |
1435 | if (!fp) { |
1436 | if (IoFLAGS(io) & IOf_ARGV) { |
1437 | if (IoFLAGS(io) & IOf_START) { |
a0d0e21e |
1438 | IoLINES(io) = 0; |
3280af22 |
1439 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 |
1440 | IoFLAGS(io) &= ~IOf_START; |
9d116dd7 |
1441 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 |
1442 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1443 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d |
1444 | fp = IoIFP(io); |
1445 | goto have_fp; |
a0d0e21e |
1446 | } |
1447 | } |
3280af22 |
1448 | fp = nextargv(PL_last_in_gv); |
a0d0e21e |
1449 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 |
1450 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e |
1451 | } |
1452 | } |
0d44d22b |
1453 | else if (type == OP_GLOB) |
1454 | fp = Perl_start_glob(aTHX_ POPs, io); |
a0d0e21e |
1455 | } |
1456 | else if (type == OP_GLOB) |
1457 | SP--; |
a00b5bd3 |
1458 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 |
1459 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 |
1460 | } |
a0d0e21e |
1461 | } |
1462 | if (!fp) { |
790090df |
1463 | if (ckWARN2(WARN_GLOB, WARN_CLOSED) |
1464 | && (!io || !(IoFLAGS(io) & IOf_START))) { |
3f4520fe |
1465 | if (type == OP_GLOB) |
9014280d |
1466 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a |
1467 | "glob failed (can't start child: %s)", |
1468 | Strerror(errno)); |
69282e91 |
1469 | else |
bc37a18f |
1470 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe |
1471 | } |
54310121 |
1472 | if (gimme == G_SCALAR) { |
a0d0e21e |
1473 | (void)SvOK_off(TARG); |
1474 | PUSHTARG; |
1475 | } |
1476 | RETURN; |
1477 | } |
a2008d6d |
1478 | have_fp: |
54310121 |
1479 | if (gimme == G_SCALAR) { |
a0d0e21e |
1480 | sv = TARG; |
9607fc9c |
1481 | if (SvROK(sv)) |
1482 | sv_unref(sv); |
a0d0e21e |
1483 | (void)SvUPGRADE(sv, SVt_PV); |
1484 | tmplen = SvLEN(sv); /* remember if already alloced */ |
1485 | if (!tmplen) |
1486 | Sv_Grow(sv, 80); /* try short-buffering it */ |
1487 | if (type == OP_RCATLINE) |
1488 | offset = SvCUR(sv); |
1489 | else |
1490 | offset = 0; |
1491 | } |
54310121 |
1492 | else { |
1493 | sv = sv_2mortal(NEWSV(57, 80)); |
1494 | offset = 0; |
1495 | } |
fbad3eb5 |
1496 | |
3887d568 |
1497 | /* This should not be marked tainted if the fp is marked clean */ |
1498 | #define MAYBE_TAINT_LINE(io, sv) \ |
1499 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ |
1500 | TAINT; \ |
1501 | SvTAINTED_on(sv); \ |
1502 | } |
1503 | |
684bef36 |
1504 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 |
1505 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 |
1506 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba |
1507 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 |
1508 | |
a0d0e21e |
1509 | for (;;) { |
09e8efcc |
1510 | PUTBACK; |
fbad3eb5 |
1511 | if (!sv_gets(sv, fp, offset) |
1512 | && (type == OP_GLOB || SNARF_EOF(gimme, PL_rs, io, sv))) |
1513 | { |
760ac839 |
1514 | PerlIO_clearerr(fp); |
a0d0e21e |
1515 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 |
1516 | fp = nextargv(PL_last_in_gv); |
a0d0e21e |
1517 | if (fp) |
1518 | continue; |
3280af22 |
1519 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e |
1520 | } |
1521 | else if (type == OP_GLOB) { |
e476b1b5 |
1522 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
9014280d |
1523 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
4eb79ab5 |
1524 | "glob failed (child exited with status %d%s)", |
894356b3 |
1525 | (int)(STATUS_CURRENT >> 8), |
cf494569 |
1526 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 |
1527 | } |
a0d0e21e |
1528 | } |
54310121 |
1529 | if (gimme == G_SCALAR) { |
a0d0e21e |
1530 | (void)SvOK_off(TARG); |
09e8efcc |
1531 | SPAGAIN; |
a0d0e21e |
1532 | PUSHTARG; |
1533 | } |
3887d568 |
1534 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e |
1535 | RETURN; |
1536 | } |
3887d568 |
1537 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e |
1538 | IoLINES(io)++; |
b9fee9ba |
1539 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc |
1540 | SvSETMAGIC(sv); |
09e8efcc |
1541 | SPAGAIN; |
a0d0e21e |
1542 | XPUSHs(sv); |
a0d0e21e |
1543 | if (type == OP_GLOB) { |
1544 | char *tmps; |
1545 | |
3280af22 |
1546 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd |
1547 | tmps = SvEND(sv) - 1; |
3280af22 |
1548 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd |
1549 | *tmps = '\0'; |
1550 | SvCUR(sv)--; |
1551 | } |
1552 | } |
a0d0e21e |
1553 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1554 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && |
1555 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) |
1556 | break; |
43384a1a |
1557 | if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e |
1558 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1559 | continue; |
1560 | } |
1561 | } |
54310121 |
1562 | if (gimme == G_ARRAY) { |
a0d0e21e |
1563 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1564 | SvLEN_set(sv, SvCUR(sv)+1); |
1565 | Renew(SvPVX(sv), SvLEN(sv), char); |
1566 | } |
1567 | sv = sv_2mortal(NEWSV(58, 80)); |
1568 | continue; |
1569 | } |
54310121 |
1570 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e |
1571 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1572 | if (SvCUR(sv) < 60) |
1573 | SvLEN_set(sv, 80); |
1574 | else |
1575 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ |
1576 | Renew(SvPVX(sv), SvLEN(sv), char); |
1577 | } |
1578 | RETURN; |
1579 | } |
1580 | } |
1581 | |
1582 | PP(pp_enter) |
1583 | { |
39644a26 |
1584 | dSP; |
c09156bb |
1585 | register PERL_CONTEXT *cx; |
533c011a |
1586 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e |
1587 | |
54310121 |
1588 | if (gimme == -1) { |
1589 | if (cxstack_ix >= 0) |
1590 | gimme = cxstack[cxstack_ix].blk_gimme; |
1591 | else |
1592 | gimme = G_SCALAR; |
1593 | } |
a0d0e21e |
1594 | |
1595 | ENTER; |
1596 | |
1597 | SAVETMPS; |
924508f0 |
1598 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e |
1599 | |
1600 | RETURN; |
1601 | } |
1602 | |
1603 | PP(pp_helem) |
1604 | { |
39644a26 |
1605 | dSP; |
760ac839 |
1606 | HE* he; |
ae77835f |
1607 | SV **svp; |
a0d0e21e |
1608 | SV *keysv = POPs; |
a0d0e21e |
1609 | HV *hv = (HV*)POPs; |
78f9721b |
1610 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a |
1611 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
be6c24e0 |
1612 | SV *sv; |
765f542d |
1613 | #ifdef PERL_COPY_ON_WRITE |
1614 | U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvUVX(keysv) : 0; |
1615 | #else |
1c846c1f |
1616 | U32 hash = (SvFAKE(keysv) && SvREADONLY(keysv)) ? SvUVX(keysv) : 0; |
765f542d |
1617 | #endif |
9c5ffd7c |
1618 | I32 preeminent = 0; |
a0d0e21e |
1619 | |
ae77835f |
1620 | if (SvTYPE(hv) == SVt_PVHV) { |
8d1f198f |
1621 | if (PL_op->op_private & OPpLVAL_INTRO) { |
1622 | MAGIC *mg; |
1623 | HV *stash; |
1624 | /* does the element we're localizing already exist? */ |
c39e6ab0 |
1625 | preeminent = |
8d1f198f |
1626 | /* can we determine whether it exists? */ |
1627 | ( !SvRMAGICAL(hv) |
1628 | || mg_find((SV*)hv, PERL_MAGIC_env) |
1629 | || ( (mg = mg_find((SV*)hv, PERL_MAGIC_tied)) |
1630 | /* Try to preserve the existenceness of a tied hash |
1631 | * element by using EXISTS and DELETE if possible. |
1632 | * Fallback to FETCH and STORE otherwise */ |
1633 | && (stash = SvSTASH(SvRV(SvTIED_obj((SV*)hv, mg)))) |
1634 | && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) |
1635 | && gv_fetchmethod_autoload(stash, "DELETE", TRUE) |
1636 | ) |
1637 | ) ? hv_exists_ent(hv, keysv, 0) : 1; |
c39e6ab0 |
1638 | |
8d1f198f |
1639 | } |
1c846c1f |
1640 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
97fcbf96 |
1641 | svp = he ? &HeVAL(he) : 0; |
ae77835f |
1642 | } |
c750a3ec |
1643 | else { |
a0d0e21e |
1644 | RETPUSHUNDEF; |
c750a3ec |
1645 | } |
a0d0e21e |
1646 | if (lval) { |
3280af22 |
1647 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 |
1648 | SV* lv; |
1649 | SV* key2; |
2d8e6c8d |
1650 | if (!defer) { |
1651 | STRLEN n_a; |
cea2e8a9 |
1652 | DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); |
2d8e6c8d |
1653 | } |
68dc0745 |
1654 | lv = sv_newmortal(); |
1655 | sv_upgrade(lv, SVt_PVLV); |
1656 | LvTYPE(lv) = 'y'; |
14befaf4 |
1657 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 |
1658 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
1659 | LvTARG(lv) = SvREFCNT_inc(hv); |
1660 | LvTARGLEN(lv) = 1; |
1661 | PUSHs(lv); |
1662 | RETURN; |
1663 | } |
533c011a |
1664 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f |
1665 | if (HvNAME(hv) && isGV(*svp)) |
533c011a |
1666 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc |
1667 | else { |
1668 | if (!preeminent) { |
1669 | STRLEN keylen; |
1670 | char *key = SvPV(keysv, keylen); |
57813020 |
1671 | SAVEDELETE(hv, savepvn(key,keylen), keylen); |
bfc4de9f |
1672 | } else |
1f5346dc |
1673 | save_helem(hv, keysv, svp); |
1674 | } |
5f05dabc |
1675 | } |
533c011a |
1676 | else if (PL_op->op_private & OPpDEREF) |
1677 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); |
a0d0e21e |
1678 | } |
3280af22 |
1679 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 |
1680 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1681 | * Pushing the magical RHS on to the stack is useless, since |
1682 | * that magic is soon destined to be misled by the local(), |
1683 | * and thus the later pp_sassign() will fail to mg_get() the |
1684 | * old value. This should also cure problems with delayed |
1685 | * mg_get()s. GSAR 98-07-03 */ |
1686 | if (!lval && SvGMAGICAL(sv)) |
1687 | sv = sv_mortalcopy(sv); |
1688 | PUSHs(sv); |
a0d0e21e |
1689 | RETURN; |
1690 | } |
1691 | |
1692 | PP(pp_leave) |
1693 | { |
39644a26 |
1694 | dSP; |
c09156bb |
1695 | register PERL_CONTEXT *cx; |
a0d0e21e |
1696 | register SV **mark; |
1697 | SV **newsp; |
1698 | PMOP *newpm; |
1699 | I32 gimme; |
1700 | |
533c011a |
1701 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e |
1702 | cx = &cxstack[cxstack_ix]; |
3280af22 |
1703 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e |
1704 | } |
1705 | |
1706 | POPBLOCK(cx,newpm); |
1707 | |
533c011a |
1708 | gimme = OP_GIMME(PL_op, -1); |
54310121 |
1709 | if (gimme == -1) { |
1710 | if (cxstack_ix >= 0) |
1711 | gimme = cxstack[cxstack_ix].blk_gimme; |
1712 | else |
1713 | gimme = G_SCALAR; |
1714 | } |
a0d0e21e |
1715 | |
a1f49e72 |
1716 | TAINT_NOT; |
54310121 |
1717 | if (gimme == G_VOID) |
1718 | SP = newsp; |
1719 | else if (gimme == G_SCALAR) { |
1720 | MARK = newsp + 1; |
09256e2f |
1721 | if (MARK <= SP) { |
54310121 |
1722 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1723 | *MARK = TOPs; |
1724 | else |
1725 | *MARK = sv_mortalcopy(TOPs); |
09256e2f |
1726 | } else { |
54310121 |
1727 | MEXTEND(mark,0); |
3280af22 |
1728 | *MARK = &PL_sv_undef; |
a0d0e21e |
1729 | } |
54310121 |
1730 | SP = MARK; |
a0d0e21e |
1731 | } |
54310121 |
1732 | else if (gimme == G_ARRAY) { |
a1f49e72 |
1733 | /* in case LEAVE wipes old return values */ |
1734 | for (mark = newsp + 1; mark <= SP; mark++) { |
1735 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { |
a0d0e21e |
1736 | *mark = sv_mortalcopy(*mark); |
a1f49e72 |
1737 | TAINT_NOT; /* Each item is independent */ |
1738 | } |
1739 | } |
a0d0e21e |
1740 | } |
3280af22 |
1741 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e |
1742 | |
1743 | LEAVE; |
1744 | |
1745 | RETURN; |
1746 | } |
1747 | |
1748 | PP(pp_iter) |
1749 | { |
39644a26 |
1750 | dSP; |
c09156bb |
1751 | register PERL_CONTEXT *cx; |
5f05dabc |
1752 | SV* sv; |
4633a7c4 |
1753 | AV* av; |
1d7c1841 |
1754 | SV **itersvp; |
a0d0e21e |
1755 | |
924508f0 |
1756 | EXTEND(SP, 1); |
a0d0e21e |
1757 | cx = &cxstack[cxstack_ix]; |
6b35e009 |
1758 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 |
1759 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e |
1760 | |
1d7c1841 |
1761 | itersvp = CxITERVAR(cx); |
4633a7c4 |
1762 | av = cx->blk_loop.iterary; |
89ea2908 |
1763 | if (SvTYPE(av) != SVt_PVAV) { |
1764 | /* iterate ($min .. $max) */ |
1765 | if (cx->blk_loop.iterlval) { |
1766 | /* string increment */ |
1767 | register SV* cur = cx->blk_loop.iterlval; |
1768 | STRLEN maxlen; |
1769 | char *max = SvPV((SV*)av, maxlen); |
1770 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
4d1ff10f |
1771 | #ifndef USE_5005THREADS /* don't risk potential race */ |
1d7c1841 |
1772 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 |
1773 | /* safe to reuse old SV */ |
1d7c1841 |
1774 | sv_setsv(*itersvp, cur); |
eaa5c2d6 |
1775 | } |
1c846c1f |
1776 | else |
eaa5c2d6 |
1777 | #endif |
1778 | { |
1779 | /* we need a fresh SV every time so that loop body sees a |
1780 | * completely new SV for closures/references to work as |
1781 | * they used to */ |
1d7c1841 |
1782 | SvREFCNT_dec(*itersvp); |
1783 | *itersvp = newSVsv(cur); |
eaa5c2d6 |
1784 | } |
89ea2908 |
1785 | if (strEQ(SvPVX(cur), max)) |
1786 | sv_setiv(cur, 0); /* terminate next time */ |
1787 | else |
1788 | sv_inc(cur); |
1789 | RETPUSHYES; |
1790 | } |
1791 | RETPUSHNO; |
1792 | } |
1793 | /* integer increment */ |
1794 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) |
1795 | RETPUSHNO; |
7f61b687 |
1796 | |
4d1ff10f |
1797 | #ifndef USE_5005THREADS /* don't risk potential race */ |
1d7c1841 |
1798 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 |
1799 | /* safe to reuse old SV */ |
1d7c1841 |
1800 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 |
1801 | } |
1c846c1f |
1802 | else |
eaa5c2d6 |
1803 | #endif |
1804 | { |
1805 | /* we need a fresh SV every time so that loop body sees a |
1806 | * completely new SV for closures/references to work as they |
1807 | * used to */ |
1d7c1841 |
1808 | SvREFCNT_dec(*itersvp); |
1809 | *itersvp = newSViv(cx->blk_loop.iterix++); |
eaa5c2d6 |
1810 | } |
89ea2908 |
1811 | RETPUSHYES; |
1812 | } |
1813 | |
1814 | /* iterate array */ |
3280af22 |
1815 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) |
4633a7c4 |
1816 | RETPUSHNO; |
a0d0e21e |
1817 | |
1d7c1841 |
1818 | SvREFCNT_dec(*itersvp); |
a0d0e21e |
1819 | |
d42935ef |
1820 | if (SvMAGICAL(av) || AvREIFY(av)) { |
1821 | SV **svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE); |
1822 | if (svp) |
1823 | sv = *svp; |
1824 | else |
1825 | sv = Nullsv; |
1826 | } |
1827 | else { |
1828 | sv = AvARRAY(av)[++cx->blk_loop.iterix]; |
1829 | } |
1830 | if (sv) |
a0d0e21e |
1831 | SvTEMP_off(sv); |
a0d0e21e |
1832 | else |
3280af22 |
1833 | sv = &PL_sv_undef; |
8b530633 |
1834 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc |
1835 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc |
1836 | if (lv && SvREFCNT(lv) > 1) { |
1837 | SvREFCNT_dec(lv); |
1838 | lv = Nullsv; |
1839 | } |
5f05dabc |
1840 | if (lv) |
1841 | SvREFCNT_dec(LvTARG(lv)); |
1842 | else { |
68dc0745 |
1843 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc |
1844 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc |
1845 | LvTYPE(lv) = 'y'; |
14befaf4 |
1846 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
5f05dabc |
1847 | } |
1848 | LvTARG(lv) = SvREFCNT_inc(av); |
1849 | LvTARGOFF(lv) = cx->blk_loop.iterix; |
42718184 |
1850 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc |
1851 | sv = (SV*)lv; |
1852 | } |
a0d0e21e |
1853 | |
1d7c1841 |
1854 | *itersvp = SvREFCNT_inc(sv); |
a0d0e21e |
1855 | RETPUSHYES; |
1856 | } |
1857 | |
1858 | PP(pp_subst) |
1859 | { |
39644a26 |
1860 | dSP; dTARG; |
a0d0e21e |
1861 | register PMOP *pm = cPMOP; |
1862 | PMOP *rpm = pm; |
1863 | register SV *dstr; |
1864 | register char *s; |
1865 | char *strend; |
1866 | register char *m; |
1867 | char *c; |
1868 | register char *d; |
1869 | STRLEN clen; |
1870 | I32 iters = 0; |
1871 | I32 maxiters; |
1872 | register I32 i; |
1873 | bool once; |
71be2cbc |
1874 | bool rxtainted; |
a0d0e21e |
1875 | char *orig; |
22e551b9 |
1876 | I32 r_flags; |
aaa362c4 |
1877 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e |
1878 | STRLEN len; |
1879 | int force_on_match = 0; |
3280af22 |
1880 | I32 oldsave = PL_savestack_ix; |
792b2c16 |
1881 | STRLEN slen; |
f272994b |
1882 | bool doutf8 = FALSE; |
a0d0e21e |
1883 | |
5cd24f17 |
1884 | /* known replacement string? */ |
1885 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; |
533c011a |
1886 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
1887 | TARG = POPs; |
1888 | else { |
54b9620d |
1889 | TARG = DEFSV; |
a0d0e21e |
1890 | EXTEND(SP,1); |
1c846c1f |
1891 | } |
d9f424b2 |
1892 | |
765f542d |
1893 | if (SvIsCOW(TARG)) |
1894 | sv_force_normal_flags(TARG,0); |
68dc0745 |
1895 | if (SvREADONLY(TARG) |
1896 | || (SvTYPE(TARG) > SVt_PVLV |
1897 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG)))) |
d470f89e |
1898 | DIE(aTHX_ PL_no_modify); |
8ec5e241 |
1899 | PUTBACK; |
1900 | |
a0d0e21e |
1901 | s = SvPV(TARG, len); |
68dc0745 |
1902 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e |
1903 | force_on_match = 1; |
b3eb6a9b |
1904 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 |
1905 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
1906 | if (PL_tainted) |
b3eb6a9b |
1907 | rxtainted |= 2; |
9212bbba |
1908 | TAINT_NOT; |
a12c0f56 |
1909 | |
53c4c00c |
1910 | PL_reg_match_utf8 = DO_UTF8(TARG); |
d9f424b2 |
1911 | |
a0d0e21e |
1912 | force_it: |
1913 | if (!pm || !s) |
2269b42e |
1914 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e |
1915 | |
1916 | strend = s + len; |
53c4c00c |
1917 | slen = PL_reg_match_utf8 ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 |
1918 | maxiters = 2 * slen + 10; /* We can match twice at each |
1919 | position, once with zero-length, |
1920 | second time with non-zero. */ |
a0d0e21e |
1921 | |
3280af22 |
1922 | if (!rx->prelen && PL_curpm) { |
1923 | pm = PL_curpm; |
aaa362c4 |
1924 | rx = PM_GETRE(pm); |
a0d0e21e |
1925 | } |
22e551b9 |
1926 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
9d080a66 |
1927 | ? REXEC_COPY_STR : 0; |
f722798b |
1928 | if (SvSCREAM(TARG)) |
22e551b9 |
1929 | r_flags |= REXEC_SCREAM; |
a0d0e21e |
1930 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 |
1931 | SAVEINT(PL_multiline); |
1932 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; |
a0d0e21e |
1933 | } |
1934 | orig = m = s; |
f722798b |
1935 | if (rx->reganch & RE_USE_INTUIT) { |
ee0b7718 |
1936 | PL_bostr = orig; |
f722798b |
1937 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1938 | |
1939 | if (!s) |
1940 | goto nope; |
1941 | /* How to do it in subst? */ |
1942 | /* if ( (rx->reganch & ROPT_CHECK_ALL) |
1c846c1f |
1943 | && !PL_sawampersand |
f722798b |
1944 | && ((rx->reganch & ROPT_NOSCAN) |
1945 | || !((rx->reganch & RE_INTUIT_TAIL) |
1946 | && (r_flags & REXEC_SCREAM)))) |
1947 | goto yup; |
1948 | */ |
a0d0e21e |
1949 | } |
71be2cbc |
1950 | |
1951 | /* only replace once? */ |
a0d0e21e |
1952 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc |
1953 | |
1954 | /* known replacement string? */ |
f272994b |
1955 | if (dstr) { |
8514a05a |
1956 | /* replacement needing upgrading? */ |
1957 | if (DO_UTF8(TARG) && !doutf8) { |
4a176938 |
1958 | SV *nsv = sv_newmortal(); |
1959 | SvSetSV(nsv, dstr); |
8514a05a |
1960 | if (PL_encoding) |
1961 | sv_recode_to_utf8(nsv, PL_encoding); |
1962 | else |
1963 | sv_utf8_upgrade(nsv); |
1964 | c = SvPV(nsv, clen); |
4a176938 |
1965 | doutf8 = TRUE; |
1966 | } |
1967 | else { |
1968 | c = SvPV(dstr, clen); |
1969 | doutf8 = DO_UTF8(dstr); |
8514a05a |
1970 | } |
f272994b |
1971 | } |
1972 | else { |
1973 | c = Nullch; |
1974 | doutf8 = FALSE; |
1975 | } |
1976 | |
71be2cbc |
1977 | /* can do inplace substitution? */ |
eb160463 |
1978 | if (c && (I32)clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) |
d9f97599 |
1979 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN)) { |
f722798b |
1980 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
1981 | r_flags | REXEC_CHECKED)) |
1982 | { |
8ec5e241 |
1983 | SPAGAIN; |
3280af22 |
1984 | PUSHs(&PL_sv_no); |
71be2cbc |
1985 | LEAVE_SCOPE(oldsave); |
1986 | RETURN; |
1987 | } |
1988 | if (force_on_match) { |
1989 | force_on_match = 0; |
1990 | s = SvPV_force(TARG, len); |
1991 | goto force_it; |
1992 | } |
71be2cbc |
1993 | d = s; |
3280af22 |
1994 | PL_curpm = pm; |
71be2cbc |
1995 | SvSCREAM_off(TARG); /* disable possible screamer */ |
1996 | if (once) { |
48c036b1 |
1997 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
1998 | m = orig + rx->startp[0]; |
1999 | d = orig + rx->endp[0]; |
71be2cbc |
2000 | s = orig; |
2001 | if (m - s > strend - d) { /* faster to shorten from end */ |
2002 | if (clen) { |
2003 | Copy(c, m, clen, char); |
2004 | m += clen; |
a0d0e21e |
2005 | } |
71be2cbc |
2006 | i = strend - d; |
2007 | if (i > 0) { |
2008 | Move(d, m, i, char); |
2009 | m += i; |
a0d0e21e |
2010 | } |
71be2cbc |
2011 | *m = '\0'; |
2012 | SvCUR_set(TARG, m - s); |
2013 | } |
2014 | /*SUPPRESS 560*/ |
155aba94 |
2015 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc |
2016 | d -= clen; |
2017 | m = d; |
2018 | sv_chop(TARG, d-i); |
2019 | s += i; |
2020 | while (i--) |
2021 | *--d = *--s; |
2022 | if (clen) |
2023 | Copy(c, m, clen, char); |
2024 | } |
2025 | else if (clen) { |
2026 | d -= clen; |
2027 | sv_chop(TARG, d); |
2028 | Copy(c, d, clen, char); |
2029 | } |
2030 | else { |
2031 | sv_chop(TARG, d); |
2032 | } |
48c036b1 |
2033 | TAINT_IF(rxtainted & 1); |
8ec5e241 |
2034 | SPAGAIN; |
3280af22 |
2035 | PUSHs(&PL_sv_yes); |
71be2cbc |
2036 | } |
2037 | else { |
71be2cbc |
2038 | do { |
2039 | if (iters++ > maxiters) |
cea2e8a9 |
2040 | DIE(aTHX_ "Substitution loop"); |
d9f97599 |
2041 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
2042 | m = rx->startp[0] + orig; |
71be2cbc |
2043 | /*SUPPRESS 560*/ |
155aba94 |
2044 | if ((i = m - s)) { |
71be2cbc |
2045 | if (s != d) |
2046 | Move(s, d, i, char); |
2047 | d += i; |
a0d0e21e |
2048 | } |
71be2cbc |
2049 | if (clen) { |
2050 | Copy(c, d, clen, char); |
2051 | d += clen; |
2052 | } |
cf93c79d |
2053 | s = rx->endp[0] + orig; |
cea2e8a9 |
2054 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b |
2055 | TARG, NULL, |
2056 | /* don't match same null twice */ |
2057 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); |
71be2cbc |
2058 | if (s != d) { |
2059 | i = strend - s; |
2060 | SvCUR_set(TARG, d - SvPVX(TARG) + i); |
2061 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e |
2062 | } |
48c036b1 |
2063 | TAINT_IF(rxtainted & 1); |
8ec5e241 |
2064 | SPAGAIN; |
71be2cbc |
2065 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e |
2066 | } |
80b498e0 |
2067 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 |
2068 | TAINT_IF(rxtainted); |
8ec5e241 |
2069 | if (SvSMAGICAL(TARG)) { |
2070 | PUTBACK; |
2071 | mg_set(TARG); |
2072 | SPAGAIN; |
2073 | } |
9212bbba |
2074 | SvTAINT(TARG); |
aefe6dfc |
2075 | if (doutf8) |
2076 | SvUTF8_on(TARG); |
71be2cbc |
2077 | LEAVE_SCOPE(oldsave); |
2078 | RETURN; |
a0d0e21e |
2079 | } |
71be2cbc |
2080 | |
f722798b |
2081 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2082 | r_flags | REXEC_CHECKED)) |
2083 | { |
a0d0e21e |
2084 | if (force_on_match) { |
2085 | force_on_match = 0; |
2086 | s = SvPV_force(TARG, len); |
2087 | goto force_it; |
2088 | } |
48c036b1 |
2089 | rxtainted |= RX_MATCH_TAINTED(rx); |
8ec5e241 |
2090 | dstr = NEWSV(25, len); |
a0d0e21e |
2091 | sv_setpvn(dstr, m, s-m); |
ffc61ed2 |
2092 | if (DO_UTF8(TARG)) |
2093 | SvUTF8_on(dstr); |
3280af22 |
2094 | PL_curpm = pm; |
a0d0e21e |
2095 | if (!c) { |
c09156bb |
2096 | register PERL_CONTEXT *cx; |
8ec5e241 |
2097 | SPAGAIN; |
a0d0e21e |
2098 | PUSHSUBST(cx); |
2099 | RETURNOP(cPMOP->op_pmreplroot); |
2100 | } |
cf93c79d |
2101 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e |
2102 | do { |
2103 | if (iters++ > maxiters) |
cea2e8a9 |
2104 | DIE(aTHX_ "Substitution loop"); |
d9f97599 |
2105 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
2106 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e |
2107 | m = s; |
2108 | s = orig; |
cf93c79d |
2109 | orig = rx->subbeg; |
a0d0e21e |
2110 | s = orig + (m - s); |
2111 | strend = s + (strend - m); |
2112 | } |
cf93c79d |
2113 | m = rx->startp[0] + orig; |
a0d0e21e |
2114 | sv_catpvn(dstr, s, m-s); |
cf93c79d |
2115 | s = rx->endp[0] + orig; |
a0d0e21e |
2116 | if (clen) |
2117 | sv_catpvn(dstr, c, clen); |
2118 | if (once) |
2119 | break; |
ffc61ed2 |
2120 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2121 | TARG, NULL, r_flags)); |
89afcb60 |
2122 | if (doutf8 && !DO_UTF8(dstr)) { |
2123 | SV* nsv = sv_2mortal(newSVpvn(s, strend - s)); |
2124 | |
2125 | sv_utf8_upgrade(nsv); |
2126 | sv_catpvn(dstr, SvPVX(nsv), SvCUR(nsv)); |
2127 | } |
2128 | else |
2129 | sv_catpvn(dstr, s, strend - s); |
748a9306 |
2130 | |
4633a7c4 |
2131 | (void)SvOOK_off(TARG); |
cb0b1708 |
2132 | Safefree(SvPVX(TARG)); |
748a9306 |
2133 | SvPVX(TARG) = SvPVX(dstr); |
2134 | SvCUR_set(TARG, SvCUR(dstr)); |
2135 | SvLEN_set(TARG, SvLEN(dstr)); |
f272994b |
2136 | doutf8 |= DO_UTF8(dstr); |
748a9306 |
2137 | SvPVX(dstr) = 0; |
2138 | sv_free(dstr); |
2139 | |
48c036b1 |
2140 | TAINT_IF(rxtainted & 1); |
f878fbec |
2141 | SPAGAIN; |
48c036b1 |
2142 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2143 | |
a0d0e21e |
2144 | (void)SvPOK_only(TARG); |
f272994b |
2145 | if (doutf8) |
60aeb6fd |
2146 | SvUTF8_on(TARG); |
48c036b1 |
2147 | TAINT_IF(rxtainted); |
a0d0e21e |
2148 | SvSETMAGIC(TARG); |
9212bbba |
2149 | SvTAINT(TARG); |
4633a7c4 |
2150 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
2151 | RETURN; |
2152 | } |
5cd24f17 |
2153 | goto ret_no; |
a0d0e21e |
2154 | |
2155 | nope: |
1c846c1f |
2156 | ret_no: |
8ec5e241 |
2157 | SPAGAIN; |
3280af22 |
2158 | PUSHs(&PL_sv_no); |
4633a7c4 |
2159 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
2160 | RETURN; |
2161 | } |
2162 | |
2163 | PP(pp_grepwhile) |
2164 | { |
39644a26 |
2165 | dSP; |
a0d0e21e |
2166 | |
2167 | if (SvTRUEx(POPs)) |
3280af22 |
2168 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2169 | ++*PL_markstack_ptr; |
a0d0e21e |
2170 | LEAVE; /* exit inner scope */ |
2171 | |
2172 | /* All done yet? */ |
3280af22 |
2173 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e |
2174 | I32 items; |
54310121 |
2175 | I32 gimme = GIMME_V; |
a0d0e21e |
2176 | |
2177 | LEAVE; /* exit outer scope */ |
2178 | (void)POPMARK; /* pop src */ |
3280af22 |
2179 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e |
2180 | (void)POPMARK; /* pop dst */ |
3280af22 |
2181 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 |
2182 | if (gimme == G_SCALAR) { |
a0d0e21e |
2183 | dTARGET; |
2184 | XPUSHi(items); |
a0d0e21e |
2185 | } |
54310121 |
2186 | else if (gimme == G_ARRAY) |
2187 | SP += items; |
a0d0e21e |
2188 | RETURN; |
2189 | } |
2190 | else { |
2191 | SV *src; |
2192 | |
2193 | ENTER; /* enter inner scope */ |
1d7c1841 |
2194 | SAVEVPTR(PL_curpm); |
a0d0e21e |
2195 | |
3280af22 |
2196 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e |
2197 | SvTEMP_off(src); |
54b9620d |
2198 | DEFSV = src; |
a0d0e21e |
2199 | |
2200 | RETURNOP(cLOGOP->op_other); |
2201 | } |
2202 | } |
2203 | |
2204 | PP(pp_leavesub) |
2205 | { |
39644a26 |
2206 | dSP; |
a0d0e21e |
2207 | SV **mark; |
2208 | SV **newsp; |
2209 | PMOP *newpm; |
2210 | I32 gimme; |
c09156bb |
2211 | register PERL_CONTEXT *cx; |
b0d9ce38 |
2212 | SV *sv; |
a0d0e21e |
2213 | |
2214 | POPBLOCK(cx,newpm); |
1c846c1f |
2215 | |
a1f49e72 |
2216 | TAINT_NOT; |
a0d0e21e |
2217 | if (gimme == G_SCALAR) { |
2218 | MARK = newsp + 1; |
a29cdaf0 |
2219 | if (MARK <= SP) { |
a8bba7fa |
2220 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 |
2221 | if (SvTEMP(TOPs)) { |
2222 | *MARK = SvREFCNT_inc(TOPs); |
2223 | FREETMPS; |
2224 | sv_2mortal(*MARK); |
cd06dffe |
2225 | } |
2226 | else { |
959e3673 |
2227 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 |
2228 | FREETMPS; |
959e3673 |
2229 | *MARK = sv_mortalcopy(sv); |
2230 | SvREFCNT_dec(sv); |
a29cdaf0 |
2231 | } |
cd06dffe |
2232 | } |
2233 | else |
a29cdaf0 |
2234 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe |
2235 | } |
2236 | else { |
f86702cc |
2237 | MEXTEND(MARK, 0); |
3280af22 |
2238 | *MARK = &PL_sv_undef; |
a0d0e21e |
2239 | } |
2240 | SP = MARK; |
2241 | } |
54310121 |
2242 | else if (gimme == G_ARRAY) { |
f86702cc |
2243 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 |
2244 | if (!SvTEMP(*MARK)) { |
f86702cc |
2245 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 |
2246 | TAINT_NOT; /* Each item is independent */ |
2247 | } |
f86702cc |
2248 | } |
a0d0e21e |
2249 | } |
f86702cc |
2250 | PUTBACK; |
1c846c1f |
2251 | |
b0d9ce38 |
2252 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 |
2253 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e |
2254 | |
2255 | LEAVE; |
b0d9ce38 |
2256 | LEAVESUB(sv); |
a0d0e21e |
2257 | return pop_return(); |
2258 | } |
2259 | |
cd06dffe |
2260 | /* This duplicates the above code because the above code must not |
2261 | * get any slower by more conditions */ |
2262 | PP(pp_leavesublv) |
2263 | { |
39644a26 |
2264 | dSP; |
cd06dffe |
2265 | SV **mark; |
2266 | SV **newsp; |
2267 | PMOP *newpm; |
2268 | I32 gimme; |
2269 | register PERL_CONTEXT *cx; |
b0d9ce38 |
2270 | SV *sv; |
cd06dffe |
2271 | |
2272 | POPBLOCK(cx,newpm); |
1c846c1f |
2273 | |
cd06dffe |
2274 | TAINT_NOT; |
2275 | |
2276 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { |
2277 | /* We are an argument to a function or grep(). |
2278 | * This kind of lvalueness was legal before lvalue |
2279 | * subroutines too, so be backward compatible: |
2280 | * cannot report errors. */ |
2281 | |
2282 | /* Scalar context *is* possible, on the LHS of -> only, |
2283 | * as in f()->meth(). But this is not an lvalue. */ |
2284 | if (gimme == G_SCALAR) |
2285 | goto temporise; |
2286 | if (gimme == G_ARRAY) { |
a8bba7fa |
2287 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe |
2288 | goto temporise_array; |
2289 | EXTEND_MORTAL(SP - newsp); |
2290 | for (mark = newsp + 1; mark <= SP; mark++) { |
2291 | if (SvTEMP(*mark)) |
2292 | /* empty */ ; |
2293 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) |
2294 | *mark = sv_mortalcopy(*mark); |
2295 | else { |
2296 | /* Can be a localized value subject to deletion. */ |
2297 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2298 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2299 | } |
2300 | } |
2301 | } |
2302 | } |
2303 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ |
2304 | /* Here we go for robustness, not for speed, so we change all |
2305 | * the refcounts so the caller gets a live guy. Cannot set |
2306 | * TEMP, so sv_2mortal is out of question. */ |
a8bba7fa |
2307 | if (!CvLVALUE(cx->blk_sub.cv)) { |
b0d9ce38 |
2308 | POPSUB(cx,sv); |
d470f89e |
2309 | PL_curpm = newpm; |
b0d9ce38 |
2310 | LEAVE; |
2311 | LEAVESUB(sv); |
d470f89e |
2312 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2313 | } |
cd06dffe |
2314 | if (gimme == G_SCALAR) { |
2315 | MARK = newsp + 1; |
2316 | EXTEND_MORTAL(1); |
2317 | if (MARK == SP) { |
d470f89e |
2318 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
b0d9ce38 |
2319 | POPSUB(cx,sv); |
d470f89e |
2320 | PL_curpm = newpm; |
b0d9ce38 |
2321 | LEAVE; |
2322 | LEAVESUB(sv); |
d470f89e |
2323 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
cd06dffe |
2324 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); |
d470f89e |
2325 | } |
cd06dffe |
2326 | else { /* Can be a localized value |
2327 | * subject to deletion. */ |
2328 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2329 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2330 | } |
2331 | } |
d470f89e |
2332 | else { /* Should not happen? */ |
b0d9ce38 |
2333 | POPSUB(cx,sv); |
d470f89e |
2334 | PL_curpm = newpm; |
b0d9ce38 |
2335 | LEAVE; |
2336 | LEAVESUB(sv); |
d470f89e |
2337 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe |
2338 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e |
2339 | } |
cd06dffe |
2340 | SP = MARK; |
2341 | } |
2342 | else if (gimme == G_ARRAY) { |
2343 | EXTEND_MORTAL(SP - newsp); |
2344 | for (mark = newsp + 1; mark <= SP; mark++) { |
f206cdda |
2345 | if (*mark != &PL_sv_undef |
2346 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
d470f89e |
2347 | /* Might be flattened array after $#array = */ |
2348 | PUTBACK; |
b0d9ce38 |
2349 | POPSUB(cx,sv); |
d470f89e |
2350 | PL_curpm = newpm; |
b0d9ce38 |
2351 | LEAVE; |
2352 | LEAVESUB(sv); |
f206cdda |
2353 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2354 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); |
d470f89e |
2355 | } |
cd06dffe |
2356 | else { |
cd06dffe |
2357 | /* Can be a localized value subject to deletion. */ |
2358 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2359 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2360 | } |
2361 | } |
2362 | } |
2363 | } |
2364 | else { |
2365 | if (gimme == G_SCALAR) { |
2366 | temporise: |
2367 | MARK = newsp + 1; |
2368 | if (MARK <= SP) { |
a8bba7fa |
2369 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe |
2370 | if (SvTEMP(TOPs)) { |
2371 | *MARK = SvREFCNT_inc(TOPs); |
2372 | FREETMPS; |
2373 | sv_2mortal(*MARK); |
2374 | } |
2375 | else { |
959e3673 |
2376 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe |
2377 | FREETMPS; |
959e3673 |
2378 | *MARK = sv_mortalcopy(sv); |
2379 | SvREFCNT_dec(sv); |
cd06dffe |
2380 | } |
2381 | } |
2382 | else |
2383 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
2384 | } |
2385 | else { |
2386 | MEXTEND(MARK, 0); |
2387 | *MARK = &PL_sv_undef; |
2388 | } |
2389 | SP = MARK; |
2390 | } |
2391 | else if (gimme == G_ARRAY) { |
2392 | temporise_array: |
2393 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
2394 | if (!SvTEMP(*MARK)) { |
2395 | *MARK = sv_mortalcopy(*MARK); |
2396 | TAINT_NOT; /* Each item is independent */ |
2397 | } |
2398 | } |
2399 | } |
2400 | } |
2401 | PUTBACK; |
1c846c1f |
2402 | |
b0d9ce38 |
2403 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe |
2404 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2405 | |
2406 | LEAVE; |
b0d9ce38 |
2407 | LEAVESUB(sv); |
cd06dffe |
2408 | return pop_return(); |
2409 | } |
2410 | |
2411 | |
76e3520e |
2412 | STATIC CV * |
cea2e8a9 |
2413 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 |
2414 | { |
3280af22 |
2415 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 |
2416 | |
2417 | if (!PERLDB_SUB_NN) { |
2418 | GV *gv = CvGV(cv); |
2419 | |
2420 | save_item(dbsv); |
2421 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) |
1c846c1f |
2422 | || strEQ(GvNAME(gv), "END") |
491527d0 |
2423 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
2424 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) |
2425 | && (gv = (GV*)*svp) ))) { |
2426 | /* Use GV from the stack as a fallback. */ |
2427 | /* GV is potentially non-unique, or contain different CV. */ |
c2e66d9e |
2428 | SV *tmp = newRV((SV*)cv); |
2429 | sv_setsv(dbsv, tmp); |
2430 | SvREFCNT_dec(tmp); |
491527d0 |
2431 | } |
2432 | else { |
2433 | gv_efullname3(dbsv, gv, Nullch); |
2434 | } |
3de9ffa1 |
2435 | } |
2436 | else { |
155aba94 |
2437 | (void)SvUPGRADE(dbsv, SVt_PVIV); |
2438 | (void)SvIOK_on(dbsv); |
491527d0 |
2439 | SAVEIV(SvIVX(dbsv)); |
5bc28da9 |
2440 | SvIVX(dbsv) = PTR2IV(cv); /* Do it the quickest way */ |
3de9ffa1 |
2441 | } |
491527d0 |
2442 | |
3de9ffa1 |
2443 | if (CvXSUB(cv)) |
3280af22 |
2444 | PL_curcopdb = PL_curcop; |
2445 | cv = GvCV(PL_DBsub); |
3de9ffa1 |
2446 | return cv; |
2447 | } |
2448 | |
a0d0e21e |
2449 | PP(pp_entersub) |
2450 | { |
39644a26 |
2451 | dSP; dPOPss; |
a0d0e21e |
2452 | GV *gv; |
2453 | HV *stash; |
2454 | register CV *cv; |
c09156bb |
2455 | register PERL_CONTEXT *cx; |
5d94fbed |
2456 | I32 gimme; |
533c011a |
2457 | bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e |
2458 | |
2459 | if (!sv) |
cea2e8a9 |
2460 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e |
2461 | switch (SvTYPE(sv)) { |
2462 | default: |
2463 | if (!SvROK(sv)) { |
748a9306 |
2464 | char *sym; |
2d8e6c8d |
2465 | STRLEN n_a; |
748a9306 |
2466 | |
3280af22 |
2467 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a |
2468 | if (hasargs) |
3280af22 |
2469 | SP = PL_stack_base + POPMARK; |
a0d0e21e |
2470 | RETURN; |
fb73857a |
2471 | } |
15ff848f |
2472 | if (SvGMAGICAL(sv)) { |
2473 | mg_get(sv); |
f5f1d18e |
2474 | if (SvROK(sv)) |
2475 | goto got_rv; |
15ff848f |
2476 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; |
2477 | } |
2478 | else |
2d8e6c8d |
2479 | sym = SvPV(sv, n_a); |
15ff848f |
2480 | if (!sym) |
cea2e8a9 |
2481 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a |
2482 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
2483 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 |
2484 | cv = get_cv(sym, TRUE); |
a0d0e21e |
2485 | break; |
2486 | } |
f5f1d18e |
2487 | got_rv: |
f5284f61 |
2488 | { |
2489 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
2490 | tryAMAGICunDEREF(to_cv); |
2491 | } |
a0d0e21e |
2492 | cv = (CV*)SvRV(sv); |
2493 | if (SvTYPE(cv) == SVt_PVCV) |
2494 | break; |
2495 | /* FALL THROUGH */ |
2496 | case SVt_PVHV: |
2497 | case SVt_PVAV: |
cea2e8a9 |
2498 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e |
2499 | case SVt_PVCV: |
2500 | cv = (CV*)sv; |
2501 | break; |
2502 | case SVt_PVGV: |
8ebc5c01 |
2503 | if (!(cv = GvCVu((GV*)sv))) |
f6ec51f7 |
2504 | cv = sv_2cv(sv, &stash, &gv, FALSE); |
2505 | if (!cv) { |
2506 | ENTER; |
2507 | SAVETMPS; |
2508 | goto try_autoload; |
2509 | } |
2510 | break; |
a0d0e21e |
2511 | } |
2512 | |
2513 | ENTER; |
2514 | SAVETMPS; |
2515 | |
2516 | retry: |
a0d0e21e |
2517 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
44a8e56a |
2518 | GV* autogv; |
22239a37 |
2519 | SV* sub_name; |
44a8e56a |
2520 | |
2521 | /* anonymous or undef'd function leaves us no recourse */ |
2522 | if (CvANON(cv) || !(gv = CvGV(cv))) |
cea2e8a9 |
2523 | DIE(aTHX_ "Undefined subroutine called"); |
67caa1fe |
2524 | |
44a8e56a |
2525 | /* autoloaded stub? */ |
2526 | if (cv != GvCV(gv)) { |
2527 | cv = GvCV(gv); |
a0d0e21e |
2528 | } |
44a8e56a |
2529 | /* should call AUTOLOAD now? */ |
67caa1fe |
2530 | else { |
f6ec51f7 |
2531 | try_autoload: |
2532 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
2533 | FALSE))) |
2534 | { |
2535 | cv = GvCV(autogv); |
2536 | } |
2537 | /* sorry */ |
2538 | else { |
2539 | sub_name = sv_newmortal(); |
2540 | gv_efullname3(sub_name, gv, Nullch); |
cea2e8a9 |
2541 | DIE(aTHX_ "Undefined subroutine &%s called", SvPVX(sub_name)); |
f6ec51f7 |
2542 | } |
67caa1fe |
2543 | } |
2544 | if (!cv) |
cea2e8a9 |
2545 | DIE(aTHX_ "Not a CODE reference"); |
67caa1fe |
2546 | goto retry; |
a0d0e21e |
2547 | } |
2548 | |
54310121 |
2549 | gimme = GIMME_V; |
67caa1fe |
2550 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
4f01c5a5 |
2551 | cv = get_db_sub(&sv, cv); |
67caa1fe |
2552 | if (!cv) |
cea2e8a9 |
2553 | DIE(aTHX_ "No DBsub routine"); |
67caa1fe |
2554 | } |
a0d0e21e |
2555 | |
4d1ff10f |
2556 | #ifdef USE_5005THREADS |
3de9ffa1 |
2557 | /* |
2558 | * First we need to check if the sub or method requires locking. |
458fb581 |
2559 | * If so, we gain a lock on the CV, the first argument or the |
2560 | * stash (for static methods), as appropriate. This has to be |
2561 | * inline because for FAKE_THREADS, COND_WAIT inlines code to |
2562 | * reschedule by returning a new op. |
3de9ffa1 |
2563 | */ |
11343788 |
2564 | MUTEX_LOCK(CvMUTEXP(cv)); |
77a005ab |
2565 | if (CvFLAGS(cv) & CVf_LOCKED) { |
2566 | MAGIC *mg; |
2567 | if (CvFLAGS(cv) & CVf_METHOD) { |
533c011a |
2568 | if (SP > PL_stack_base + TOPMARK) |
2569 | sv = *(PL_stack_base + TOPMARK + 1); |
77a005ab |
2570 | else { |
13e08037 |
2571 | AV *av = (AV*)PL_curpad[0]; |
2572 | if (hasargs || !av || AvFILLp(av) < 0 |
2573 | || !(sv = AvARRAY(av)[0])) |
2574 | { |
2575 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
d470f89e |
2576 | DIE(aTHX_ "no argument for locked method call"); |
13e08037 |
2577 | } |
77a005ab |
2578 | } |
2579 | if (SvROK(sv)) |
2580 | sv = SvRV(sv); |
458fb581 |
2581 | else { |
2582 | STRLEN len; |
2583 | char *stashname = SvPV(sv, len); |
2584 | sv = (SV*)gv_stashpvn(stashname, len, TRUE); |
2585 | } |
77a005ab |
2586 | } |
2587 | else { |
2588 | sv = (SV*)cv; |
2589 | } |
2590 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
2591 | mg = condpair_magic(sv); |
2592 | MUTEX_LOCK(MgMUTEXP(mg)); |
2593 | if (MgOWNER(mg) == thr) |
2594 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
2595 | else { |
2596 | while (MgOWNER(mg)) |
2597 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); |
2598 | MgOWNER(mg) = thr; |
bf49b057 |
2599 | DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: pp_entersub lock %p\n", |
a674cc95 |
2600 | thr, sv)); |
77a005ab |
2601 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
c76ac1ee |
2602 | SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv); |
11343788 |
2603 | } |
77a005ab |
2604 | MUTEX_LOCK(CvMUTEXP(cv)); |
11343788 |
2605 | } |
3de9ffa1 |
2606 | /* |
2607 | * Now we have permission to enter the sub, we must distinguish |
2608 | * four cases. (0) It's an XSUB (in which case we don't care |
2609 | * about ownership); (1) it's ours already (and we're recursing); |
2610 | * (2) it's free (but we may already be using a cached clone); |
2611 | * (3) another thread owns it. Case (1) is easy: we just use it. |
2612 | * Case (2) means we look for a clone--if we have one, use it |
2613 | * otherwise grab ownership of cv. Case (3) means we look for a |
2614 | * clone (for non-XSUBs) and have to create one if we don't |
2615 | * already have one. |
2616 | * Why look for a clone in case (2) when we could just grab |
2617 | * ownership of cv straight away? Well, we could be recursing, |
2618 | * i.e. we originally tried to enter cv while another thread |
2619 | * owned it (hence we used a clone) but it has been freed up |
2620 | * and we're now recursing into it. It may or may not be "better" |
2621 | * to use the clone but at least CvDEPTH can be trusted. |
2622 | */ |
2623 | if (CvOWNER(cv) == thr || CvXSUB(cv)) |
2624 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
11343788 |
2625 | else { |
3de9ffa1 |
2626 | /* Case (2) or (3) */ |
2627 | SV **svp; |
2628 | |
11343788 |
2629 | /* |
3de9ffa1 |
2630 | * XXX Might it be better to release CvMUTEXP(cv) while we |
2631 | * do the hv_fetch? We might find someone has pinched it |
2632 | * when we look again, in which case we would be in case |
2633 | * (3) instead of (2) so we'd have to clone. Would the fact |
2634 | * that we released the mutex more quickly make up for this? |
2635 | */ |
b099ddc0 |
2636 | if ((svp = hv_fetch(thr->cvcache, (char *)cv, sizeof(cv), FALSE))) |
6ee623d5 |
2637 | { |
3de9ffa1 |
2638 | /* We already have a clone to use */ |
11343788 |
2639 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
3de9ffa1 |
2640 | cv = *(CV**)svp; |
bf49b057 |
2641 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1fd28e87 |
2642 | "entersub: %p already has clone %p:%s\n", |
2643 | thr, cv, SvPEEK((SV*)cv))); |
3de9ffa1 |
2644 | CvOWNER(cv) = thr; |
2645 | SvREFCNT_inc(cv); |
2646 | if (CvDEPTH(cv) == 0) |
c76ac1ee |
2647 | SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); |
3de9ffa1 |
2648 | } |
11343788 |
2649 | else { |
3de9ffa1 |
2650 | /* (2) => grab ownership of cv. (3) => make clone */ |
2651 | if (!CvOWNER(cv)) { |
2652 | CvOWNER(cv) = thr; |
2653 | SvREFCNT_inc(cv); |
11343788 |
2654 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
bf49b057 |
2655 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1fd28e87 |
2656 | "entersub: %p grabbing %p:%s in stash %s\n", |
2657 | thr, cv, SvPEEK((SV*)cv), CvSTASH(cv) ? |
3de9ffa1 |
2658 | HvNAME(CvSTASH(cv)) : "(none)")); |
cd06dffe |
2659 | } |
2660 | else { |
3de9ffa1 |
2661 | /* Make a new clone. */ |
2662 | CV *clonecv; |
2663 | SvREFCNT_inc(cv); /* don't let it vanish from under us */ |
2664 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
bf49b057 |
2665 | DEBUG_S((PerlIO_printf(Perl_debug_log, |
1fd28e87 |
2666 | "entersub: %p cloning %p:%s\n", |
2667 | thr, cv, SvPEEK((SV*)cv)))); |
3de9ffa1 |
2668 | /* |
2669 | * We're creating a new clone so there's no race |
2670 | * between the original MUTEX_UNLOCK and the |
2671 | * SvREFCNT_inc since no one will be trying to undef |
2672 | * it out from underneath us. At least, I don't think |
2673 | * there's a race... |
2674 | */ |
2675 | clonecv = cv_clone(cv); |
2676 | SvREFCNT_dec(cv); /* finished with this */ |
199100c8 |
2677 | hv_store(thr->cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0); |
3de9ffa1 |
2678 | CvOWNER(clonecv) = thr; |
2679 | cv = clonecv; |
11343788 |
2680 | SvREFCNT_inc(cv); |
11343788 |
2681 | } |
8b73bbec |
2682 | DEBUG_S(if (CvDEPTH(cv) != 0) |
bf49b057 |
2683 | PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", |
755b0776 |
2684 | CvDEPTH(cv))); |
c76ac1ee |
2685 | SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); |
11343788 |
2686 | } |
3de9ffa1 |
2687 | } |
4d1ff10f |
2688 | #endif /* USE_5005THREADS */ |
11343788 |
2689 | |
a0d0e21e |
2690 | if (CvXSUB(cv)) { |
67caa1fe |
2691 | #ifdef PERL_XSUB_OLDSTYLE |
a0d0e21e |
2692 | if (CvOLDSTYLE(cv)) { |
20ce7b12 |
2693 | I32 (*fp3)(int,int,int); |
a0d0e21e |
2694 | dMARK; |
2695 | register I32 items = SP - MARK; |
67955e0c |
2696 | /* We dont worry to copy from @_. */ |
924508f0 |
2697 | while (SP > mark) { |
2698 | SP[1] = SP[0]; |
2699 | SP--; |
a0d0e21e |
2700 | } |
3280af22 |
2701 | PL_stack_sp = mark + 1; |
1d7c1841 |
2702 | fp3 = (I32(*)(int,int,int))CvXSUB(cv); |
1c846c1f |
2703 | items = (*fp3)(CvXSUBANY(cv).any_i32, |
3280af22 |
2704 | MARK - PL_stack_base + 1, |
ecfc5424 |
2705 | items); |
3280af22 |
2706 | PL_stack_sp = PL_stack_base + items; |
a0d0e21e |
2707 | } |
67caa1fe |
2708 | else |
2709 | #endif /* PERL_XSUB_OLDSTYLE */ |
2710 | { |
748a9306 |
2711 | I32 markix = TOPMARK; |
2712 | |
a0d0e21e |
2713 | PUTBACK; |
67955e0c |
2714 | |
2715 | if (!hasargs) { |
2716 | /* Need to copy @_ to stack. Alternative may be to |
2717 | * switch stack to @_, and copy return values |
2718 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ |
6d4ff0d2 |
2719 | AV* av; |
2720 | I32 items; |
4d1ff10f |
2721 | #ifdef USE_5005THREADS |
533c011a |
2722 | av = (AV*)PL_curpad[0]; |
6d4ff0d2 |
2723 | #else |
3280af22 |
2724 | av = GvAV(PL_defgv); |
4d1ff10f |
2725 | #endif /* USE_5005THREADS */ |
93965878 |
2726 | items = AvFILLp(av) + 1; /* @_ is not tieable */ |
67955e0c |
2727 | |
2728 | if (items) { |
2729 | /* Mark is at the end of the stack. */ |
924508f0 |
2730 | EXTEND(SP, items); |
2731 | Copy(AvARRAY(av), SP + 1, items, SV*); |
2732 | SP += items; |
1c846c1f |
2733 | PUTBACK ; |
67955e0c |
2734 | } |
2735 | } |
67caa1fe |
2736 | /* We assume first XSUB in &DB::sub is the called one. */ |
2737 | if (PL_curcopdb) { |
1d7c1841 |
2738 | SAVEVPTR(PL_curcop); |
3280af22 |
2739 | PL_curcop = PL_curcopdb; |
2740 | PL_curcopdb = NULL; |
67955e0c |
2741 | } |
2742 | /* Do we need to open block here? XXXX */ |
acfe0abc |
2743 | (void)(*CvXSUB(cv))(aTHX_ cv); |
748a9306 |
2744 | |
2745 | /* Enforce some sanity in scalar context. */ |
3280af22 |
2746 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { |
2747 | if (markix > PL_stack_sp - PL_stack_base) |
2748 | *(PL_stack_base + markix) = &PL_sv_undef; |
748a9306 |
2749 | else |
3280af22 |
2750 | *(PL_stack_base + markix) = *PL_stack_sp; |
2751 | PL_stack_sp = PL_stack_base + markix; |
748a9306 |
2752 | } |
a0d0e21e |
2753 | } |
2754 | LEAVE; |
2755 | return NORMAL; |
2756 | } |
2757 | else { |
2758 | dMARK; |
2759 | register I32 items = SP - MARK; |
a0d0e21e |
2760 | AV* padlist = CvPADLIST(cv); |
2761 | SV** svp = AvARRAY(padlist); |
533c011a |
2762 | push_return(PL_op->op_next); |
a0d0e21e |
2763 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2764 | PUSHSUB(cx); |
2765 | CvDEPTH(cv)++; |
6b35e009 |
2766 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2767 | * that eval'' ops within this sub know the correct lexical space. |
2768 | * Owing the speed considerations, we choose to search for the cv |
2769 | * in doeval() instead. |
2770 | */ |
a0d0e21e |
2771 | if (CvDEPTH(cv) < 2) |
2772 | (void)SvREFCNT_inc(cv); |
2773 | else { /* save temporaries on recursion? */ |
1d7c1841 |
2774 | PERL_STACK_OVERFLOW_CHECK(); |
93965878 |
2775 | if (CvDEPTH(cv) > AvFILLp(padlist)) { |
a0d0e21e |
2776 | AV *av; |
2777 | AV *newpad = newAV(); |
4aa0a1f7 |
2778 | SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]); |
93965878 |
2779 | I32 ix = AvFILLp((AV*)svp[1]); |
1d7c1841 |
2780 | I32 names_fill = AvFILLp((AV*)svp[0]); |
a0d0e21e |
2781 | svp = AvARRAY(svp[0]); |
748a9306 |
2782 | for ( ;ix > 0; ix--) { |
1d7c1841 |
2783 | if (names_fill >= ix && svp[ix] != &PL_sv_undef) { |
748a9306 |
2784 | char *name = SvPVX(svp[ix]); |
5f05dabc |
2785 | if ((SvFLAGS(svp[ix]) & SVf_FAKE) /* outer lexical? */ |
2786 | || *name == '&') /* anonymous code? */ |
2787 | { |
2788 | av_store(newpad, ix, SvREFCNT_inc(oldpad[ix])); |
748a9306 |
2789 | } |
2790 | else { /* our own lexical */ |
2791 | if (*name == '@') |
2792 | av_store(newpad, ix, sv = (SV*)newAV()); |
2793 | else if (*name == '%') |
2794 | av_store(newpad, ix, sv = (SV*)newHV()); |
2795 | else |
2796 | av_store(newpad, ix, sv = NEWSV(0,0)); |
2797 | SvPADMY_on(sv); |
2798 | } |
a0d0e21e |
2799 | } |
1d7c1841 |
2800 | else if (IS_PADGV(oldpad[ix]) || IS_PADCONST(oldpad[ix])) { |
2801 | av_store(newpad, ix, sv = SvREFCNT_inc(oldpad[ix])); |
2802 | } |
a0d0e21e |
2803 | else { |
748a9306 |
2804 | av_store(newpad, ix, sv = NEWSV(0,0)); |
a0d0e21e |
2805 | SvPADTMP_on(sv); |
2806 | } |
2807 | } |
2808 | av = newAV(); /* will be @_ */ |
2809 | av_extend(av, 0); |
2810 | av_store(newpad, 0, (SV*)av); |
2811 | AvFLAGS(av) = AVf_REIFY; |
2812 | av_store(padlist, CvDEPTH(cv), (SV*)newpad); |
93965878 |
2813 | AvFILLp(padlist) = CvDEPTH(cv); |
a0d0e21e |
2814 | svp = AvARRAY(padlist); |
2815 | } |
2816 | } |
4d1ff10f |
2817 | #ifdef USE_5005THREADS |
6d4ff0d2 |
2818 | if (!hasargs) { |
533c011a |
2819 | AV* av = (AV*)PL_curpad[0]; |
6d4ff0d2 |
2820 | |
93965878 |
2821 | items = AvFILLp(av) + 1; |
6d4ff0d2 |
2822 | if (items) { |
2823 | /* Mark is at the end of the stack. */ |
924508f0 |
2824 | EXTEND(SP, items); |
2825 | Copy(AvARRAY(av), SP + 1, items, SV*); |
2826 | SP += items; |
1c846c1f |
2827 | PUTBACK ; |
6d4ff0d2 |
2828 | } |
2829 | } |
4d1ff10f |
2830 | #endif /* USE_5005THREADS */ |
1d7c1841 |
2831 | SAVEVPTR(PL_curpad); |
3280af22 |
2832 | PL_curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]); |
4d1ff10f |
2833 | #ifndef USE_5005THREADS |
6d4ff0d2 |
2834 | if (hasargs) |
4d1ff10f |
2835 | #endif /* USE_5005THREADS */ |
6d4ff0d2 |
2836 | { |
2837 | AV* av; |
a0d0e21e |
2838 | SV** ary; |
2839 | |
77a005ab |
2840 | #if 0 |
bf49b057 |
2841 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 |
2842 | "%p entersub preparing @_\n", thr)); |
77a005ab |
2843 | #endif |
3280af22 |
2844 | av = (AV*)PL_curpad[0]; |
221373f0 |
2845 | if (AvREAL(av)) { |
2846 | /* @_ is normally not REAL--this should only ever |
2847 | * happen when DB::sub() calls things that modify @_ */ |
2848 | av_clear(av); |
2849 | AvREAL_off(av); |
2850 | AvREIFY_on(av); |
2851 | } |
4d1ff10f |
2852 | #ifndef USE_5005THREADS |
3280af22 |
2853 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2854 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); |
4d1ff10f |
2855 | #endif /* USE_5005THREADS */ |
7032098e |
2856 | cx->blk_sub.oldcurpad = PL_curpad; |
6d4ff0d2 |
2857 | cx->blk_sub.argarray = av; |
a0d0e21e |
2858 | ++MARK; |
2859 | |
2860 | if (items > AvMAX(av) + 1) { |
2861 | ary = AvALLOC(av); |
2862 | if (AvARRAY(av) != ary) { |
2863 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); |
2864 | SvPVX(av) = (char*)ary; |
2865 | } |
2866 | if (items > AvMAX(av) + 1) { |
2867 | AvMAX(av) = items - 1; |
2868 | Renew(ary,items,SV*); |
2869 | AvALLOC(av) = ary; |
2870 | SvPVX(av) = (char*)ary; |
2871 | } |
2872 | } |
2873 | Copy(MARK,AvARRAY(av),items,SV*); |
93965878 |
2874 | AvFILLp(av) = items - 1; |
1c846c1f |
2875 | |
a0d0e21e |
2876 | while (items--) { |
2877 | if (*MARK) |
2878 | SvTEMP_off(*MARK); |
2879 | MARK++; |
2880 | } |
2881 | } |
4a925ff6 |
2882 | /* warning must come *after* we fully set up the context |
2883 | * stuff so that __WARN__ handlers can safely dounwind() |
2884 | * if they want to |
2885 | */ |
2886 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) |
2887 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) |
2888 | sub_crush_depth(cv); |
77a005ab |
2889 | #if 0 |
bf49b057 |
2890 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 |
2891 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab |
2892 | #endif |
a0d0e21e |
2893 | RETURNOP(CvSTART(cv)); |
2894 | } |
2895 | } |
2896 | |
44a8e56a |
2897 | void |
864dbfa3 |
2898 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a |
2899 | { |
2900 | if (CvANON(cv)) |
9014280d |
2901 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a |
2902 | else { |
2903 | SV* tmpstr = sv_newmortal(); |
2904 | gv_efullname3(tmpstr, CvGV(cv), Nullch); |
9014280d |
2905 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%s\"", |
599cee73 |
2906 | SvPVX(tmpstr)); |
44a8e56a |
2907 | } |
2908 | } |
2909 | |
a0d0e21e |
2910 | PP(pp_aelem) |
2911 | { |
39644a26 |
2912 | dSP; |
a0d0e21e |
2913 | SV** svp; |
d804643f |
2914 | SV* elemsv = POPs; |
2915 | IV elem = SvIV(elemsv); |
68dc0745 |
2916 | AV* av = (AV*)POPs; |
78f9721b |
2917 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a |
2918 | U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av)); |
be6c24e0 |
2919 | SV *sv; |
a0d0e21e |
2920 | |
e35c1634 |
2921 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
9014280d |
2922 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Use of reference \"%s\" as array index", SvPV_nolen(elemsv)); |
748a9306 |
2923 | if (elem > 0) |
3280af22 |
2924 | elem -= PL_curcop->cop_arybase; |
a0d0e21e |
2925 | if (SvTYPE(av) != SVt_PVAV) |
2926 | RETPUSHUNDEF; |
68dc0745 |
2927 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e |
2928 | if (lval) { |
3280af22 |
2929 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 |
2930 | SV* lv; |
2931 | if (!defer) |
cea2e8a9 |
2932 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 |
2933 | lv = sv_newmortal(); |
2934 | sv_upgrade(lv, SVt_PVLV); |
2935 | LvTYPE(lv) = 'y'; |
14befaf4 |
2936 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 |
2937 | LvTARG(lv) = SvREFCNT_inc(av); |
2938 | LvTARGOFF(lv) = elem; |
2939 | LvTARGLEN(lv) = 1; |
2940 | PUSHs(lv); |
2941 | RETURN; |
2942 | } |
bfc4de9f |
2943 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 |
2944 | save_aelem(av, elem, svp); |
533c011a |
2945 | else if (PL_op->op_private & OPpDEREF) |
2946 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); |
a0d0e21e |
2947 | } |
3280af22 |
2948 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 |
2949 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2950 | sv = sv_mortalcopy(sv); |
2951 | PUSHs(sv); |
a0d0e21e |
2952 | RETURN; |
2953 | } |
2954 | |
02a9e968 |
2955 | void |
864dbfa3 |
2956 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 |
2957 | { |
2958 | if (SvGMAGICAL(sv)) |
2959 | mg_get(sv); |
2960 | if (!SvOK(sv)) { |
2961 | if (SvREADONLY(sv)) |
cea2e8a9 |
2962 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc |
2963 | if (SvTYPE(sv) < SVt_RV) |
2964 | sv_upgrade(sv, SVt_RV); |
2965 | else if (SvTYPE(sv) >= SVt_PV) { |
2966 | (void)SvOOK_off(sv); |
2967 | Safefree(SvPVX(sv)); |
2968 | SvLEN(sv) = SvCUR(sv) = 0; |
2969 | } |
68dc0745 |
2970 | switch (to_what) { |
5f05dabc |
2971 | case OPpDEREF_SV: |
8c52afec |
2972 | SvRV(sv) = NEWSV(355,0); |
5f05dabc |
2973 | break; |
2974 | case OPpDEREF_AV: |
2975 | SvRV(sv) = (SV*)newAV(); |
2976 | break; |
2977 | case OPpDEREF_HV: |
2978 | SvRV(sv) = (SV*)newHV(); |
2979 | break; |
2980 | } |
02a9e968 |
2981 | SvROK_on(sv); |
2982 | SvSETMAGIC(sv); |
2983 | } |
2984 | } |
2985 | |
a0d0e21e |
2986 | PP(pp_method) |
2987 | { |
39644a26 |
2988 | dSP; |
f5d5a27c |
2989 | SV* sv = TOPs; |
2990 | |
2991 | if (SvROK(sv)) { |
eda383f2 |
2992 | SV* rsv = SvRV(sv); |
f5d5a27c |
2993 | if (SvTYPE(rsv) == SVt_PVCV) { |
2994 | SETs(rsv); |
2995 | RETURN; |
2996 | } |
2997 | } |
2998 | |
2999 | SETs(method_common(sv, Null(U32*))); |
3000 | RETURN; |
3001 | } |
3002 | |
3003 | PP(pp_method_named) |
3004 | { |
39644a26 |
3005 | dSP; |
f5d5a27c |
3006 | SV* sv = cSVOP->op_sv; |
3007 | U32 hash = SvUVX(sv); |
3008 | |
3009 | XPUSHs(method_common(sv, &hash)); |
3010 | RETURN; |
3011 | } |
3012 | |
3013 | STATIC SV * |
3014 | S_method_common(pTHX_ SV* meth, U32* hashp) |
3015 | { |
a0d0e21e |
3016 | SV* sv; |
3017 | SV* ob; |
3018 | GV* gv; |
56304f61 |
3019 | HV* stash; |
3020 | char* name; |
f5d5a27c |
3021 | STRLEN namelen; |
9c5ffd7c |
3022 | char* packname = 0; |
ac91690f |
3023 | STRLEN packlen; |
a0d0e21e |
3024 | |
f5d5a27c |
3025 | name = SvPV(meth, namelen); |
3280af22 |
3026 | sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c |
3027 | |
4f1b7578 |
3028 | if (!sv) |
3029 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); |
3030 | |
16d20bd9 |
3031 | if (SvGMAGICAL(sv)) |
af09ea45 |
3032 | mg_get(sv); |
a0d0e21e |
3033 | if (SvROK(sv)) |
16d20bd9 |
3034 | ob = (SV*)SvRV(sv); |
a0d0e21e |
3035 | else { |
3036 | GV* iogv; |
a0d0e21e |
3037 | |
af09ea45 |
3038 | /* this isn't a reference */ |
56304f61 |
3039 | packname = Nullch; |
a0d0e21e |
3040 | if (!SvOK(sv) || |
56304f61 |
3041 | !(packname = SvPV(sv, packlen)) || |
a0d0e21e |
3042 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
3043 | !(ob=(SV*)GvIO(iogv))) |
3044 | { |
af09ea45 |
3045 | /* this isn't the name of a filehandle either */ |
1c846c1f |
3046 | if (!packname || |
fd400ab9 |
3047 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 |
3048 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd |
3049 | : !isIDFIRST(*packname) |
3050 | )) |
3051 | { |
f5d5a27c |
3052 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
3053 | SvOK(sv) ? "without a package or object reference" |
3054 | : "on an undefined value"); |
834a4ddd |
3055 | } |
af09ea45 |
3056 | /* assume it's a package name */ |
3057 | stash = gv_stashpvn(packname, packlen, FALSE); |
ac91690f |
3058 | goto fetch; |
a0d0e21e |
3059 | } |
af09ea45 |
3060 | /* it _is_ a filehandle name -- replace with a reference */ |
3280af22 |
3061 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e |
3062 | } |
3063 | |
af09ea45 |
3064 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 |
3065 | if (!ob || !(SvOBJECT(ob) |
3066 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) |
3067 | && SvOBJECT(ob)))) |
3068 | { |
f5d5a27c |
3069 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
3070 | name); |
f0d43078 |
3071 | } |
a0d0e21e |
3072 | |
56304f61 |
3073 | stash = SvSTASH(ob); |
a0d0e21e |
3074 | |
ac91690f |
3075 | fetch: |
af09ea45 |
3076 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3077 | gv_fetchmethod can cope (it seems they can) */ |
3078 | |
f5d5a27c |
3079 | /* shortcut for simple names */ |
3080 | if (hashp) { |
3081 | HE* he = hv_fetch_ent(stash, meth, 0, *hashp); |
3082 | if (he) { |
3083 | gv = (GV*)HeVAL(he); |
3084 | if (isGV(gv) && GvCV(gv) && |
3085 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) |
3086 | return (SV*)GvCV(gv); |
3087 | } |
3088 | } |
3089 | |
ac91690f |
3090 | gv = gv_fetchmethod(stash, name); |
af09ea45 |
3091 | |
56304f61 |
3092 | if (!gv) { |
af09ea45 |
3093 | /* This code tries to figure out just what went wrong with |
3094 | gv_fetchmethod. It therefore needs to duplicate a lot of |
3095 | the internals of that function. We can't move it inside |
3096 | Perl_gv_fetchmethod_autoload(), however, since that would |
3097 | cause UNIVERSAL->can("NoSuchPackage::foo") to croak, and we |
3098 | don't want that. |
3099 | */ |
56304f61 |
3100 | char* leaf = name; |
3101 | char* sep = Nullch; |
3102 | char* p; |
3103 | |
3104 | for (p = name; *p; p++) { |
3105 | if (*p == '\'') |
3106 | sep = p, leaf = p + 1; |
3107 | else if (*p == ':' && *(p + 1) == ':') |
3108 | sep = p, leaf = p + 2; |
3109 | } |
3110 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { |
af09ea45 |
3111 | /* the method name is unqualified or starts with SUPER:: */ |
3112 | packname = sep ? CopSTASHPV(PL_curcop) : |
3113 | stash ? HvNAME(stash) : packname; |
56304f61 |
3114 | packlen = strlen(packname); |
3115 | } |
3116 | else { |
af09ea45 |
3117 | /* the method name is qualified */ |
56304f61 |
3118 | packname = name; |
3119 | packlen = sep - name; |
3120 | } |
af09ea45 |
3121 | |
3122 | /* we're relying on gv_fetchmethod not autovivifying the stash */ |
3123 | if (gv_stashpvn(packname, packlen, FALSE)) { |
c1899e02 |
3124 | Perl_croak(aTHX_ |
af09ea45 |
3125 | "Can't locate object method \"%s\" via package \"%.*s\"", |
3126 | leaf, (int)packlen, packname); |
c1899e02 |
3127 | } |
3128 | else { |
3129 | Perl_croak(aTHX_ |
af09ea45 |
3130 | "Can't locate object method \"%s\" via package \"%.*s\"" |
3131 | " (perhaps you forgot to load \"%.*s\"?)", |
3132 | leaf, (int)packlen, packname, (int)packlen, packname); |
c1899e02 |
3133 | } |
56304f61 |
3134 | } |
f5d5a27c |
3135 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e |
3136 | } |
22239a37 |
3137 | |
4d1ff10f |
3138 | #ifdef USE_5005THREADS |
51371543 |
3139 | static void |
acfe0abc |
3140 | unset_cvowner(pTHX_ void *cvarg) |
51371543 |
3141 | { |
3142 | register CV* cv = (CV *) cvarg; |
51371543 |
3143 | |
bf49b057 |
3144 | DEBUG_S((PerlIO_printf(Perl_debug_log, "%p unsetting CvOWNER of %p:%s\n", |
51371543 |
3145 | thr, cv, SvPEEK((SV*)cv)))); |
3146 | MUTEX_LOCK(CvMUTEXP(cv)); |
3147 | DEBUG_S(if (CvDEPTH(cv) != 0) |
bf49b057 |
3148 | PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", |
755b0776 |
3149 | CvDEPTH(cv))); |
51371543 |
3150 | assert(thr == CvOWNER(cv)); |
3151 | CvOWNER(cv) = 0; |
3152 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
3153 | SvREFCNT_dec(cv); |
3154 | } |
4d1ff10f |
3155 | #endif /* USE_5005THREADS */ |