Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
bc89e66f | 3 | * Copyright (c) 1991-2001, Larry Wall |
a0d0e21e LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
8 | */ | |
9 | ||
10 | /* | |
11 | * Then he heard Merry change the note, and up went the Horn-cry of Buckland, | |
12 | * shaking the air. | |
13 | * | |
14 | * Awake! Awake! Fear, Fire, Foes! Awake! | |
15 | * Fire, Foes! Awake! | |
16 | */ | |
17 | ||
18 | #include "EXTERN.h" | |
864dbfa3 | 19 | #define PERL_IN_PP_HOT_C |
a0d0e21e LW |
20 | #include "perl.h" |
21 | ||
22 | /* Hot code. */ | |
23 | ||
11343788 | 24 | #ifdef USE_THREADS |
51371543 | 25 | static void unset_cvowner(pTHXo_ void *cvarg); |
11343788 MB |
26 | #endif /* USE_THREADS */ |
27 | ||
a0d0e21e LW |
28 | PP(pp_const) |
29 | { | |
39644a26 | 30 | dSP; |
1d7c1841 | 31 | XPUSHs(cSVOP_sv); |
a0d0e21e LW |
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 LW |
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 LW |
52 | RETURN; |
53 | } | |
54 | ||
55 | PP(pp_null) | |
56 | { | |
57 | return NORMAL; | |
58 | } | |
59 | ||
7399586d HS |
60 | PP(pp_setstate) |
61 | { | |
62 | PL_curcop = (COP*)PL_op; | |
63 | return NORMAL; | |
64 | } | |
65 | ||
a0d0e21e LW |
66 | PP(pp_pushmark) |
67 | { | |
3280af22 | 68 | PUSHMARK(PL_stack_sp); |
a0d0e21e LW |
69 | return NORMAL; |
70 | } | |
71 | ||
72 | PP(pp_stringify) | |
73 | { | |
39644a26 | 74 | dSP; dTARGET; |
a0d0e21e LW |
75 | STRLEN len; |
76 | char *s; | |
77 | s = SvPV(TOPs,len); | |
78 | sv_setpvn(TARG,s,len); | |
9aa983d2 | 79 | if (SvUTF8(TOPs)) |
234a4bc6 | 80 | SvUTF8_on(TARG); |
a227d84d NIS |
81 | else |
82 | SvUTF8_off(TARG); | |
a0d0e21e LW |
83 | SETTARG; |
84 | RETURN; | |
85 | } | |
86 | ||
87 | PP(pp_gv) | |
88 | { | |
39644a26 | 89 | dSP; |
1d7c1841 | 90 | XPUSHs((SV*)cGVOP_gv); |
a0d0e21e LW |
91 | RETURN; |
92 | } | |
93 | ||
94 | PP(pp_and) | |
95 | { | |
39644a26 | 96 | dSP; |
a0d0e21e LW |
97 | if (!SvTRUE(TOPs)) |
98 | RETURN; | |
99 | else { | |
100 | --SP; | |
101 | RETURNOP(cLOGOP->op_other); | |
102 | } | |
103 | } | |
104 | ||
105 | PP(pp_sassign) | |
106 | { | |
39644a26 | 107 | dSP; dPOPTOPssrl; |
748a9306 | 108 | |
533c011a | 109 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
a0d0e21e LW |
110 | SV *temp; |
111 | temp = left; left = right; right = temp; | |
112 | } | |
3280af22 | 113 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e | 114 | TAINT_NOT; |
54310121 | 115 | SvSetMagicSV(right, left); |
a0d0e21e LW |
116 | SETs(right); |
117 | RETURN; | |
118 | } | |
119 | ||
120 | PP(pp_cond_expr) | |
121 | { | |
39644a26 | 122 | dSP; |
a0d0e21e | 123 | if (SvTRUEx(POPs)) |
1a67a97c | 124 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 125 | else |
1a67a97c | 126 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
127 | } |
128 | ||
129 | PP(pp_unstack) | |
130 | { | |
131 | I32 oldsave; | |
132 | TAINT_NOT; /* Each statement is presumed innocent */ | |
3280af22 | 133 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 134 | FREETMPS; |
3280af22 | 135 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
136 | LEAVE_SCOPE(oldsave); |
137 | return NORMAL; | |
138 | } | |
139 | ||
a0d0e21e LW |
140 | PP(pp_concat) |
141 | { | |
39644a26 | 142 | dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 LW |
143 | { |
144 | dPOPTOPssrl; | |
43ebc500 | 145 | SV* rcopy = Nullsv; |
69b47968 | 146 | |
43ebc500 | 147 | if (SvGMAGICAL(left)) |
82f2f503 | 148 | mg_get(left); |
43ebc500 JH |
149 | if (TARG == right && SvGMAGICAL(right)) |
150 | mg_get(right); | |
82f2f503 | 151 | |
43ebc500 JH |
152 | if (TARG == right && left != right) |
153 | /* Clone since otherwise we cannot prepend. */ | |
154 | rcopy = sv_2mortal(newSVsv(right)); | |
7889fe52 | 155 | |
43ebc500 JH |
156 | if (TARG != left) |
157 | sv_setsv(TARG, left); | |
a12c0f56 | 158 | |
fd15e783 PN |
159 | #if defined(PERL_Y2KWARN) |
160 | if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K) && SvOK(TARG)) { | |
161 | STRLEN n; | |
162 | char *s = SvPV(TARG,n); | |
163 | if (n >= 2 && s[n-2] == '1' && s[n-1] == '9' | |
164 | && (n == 2 || !isDIGIT(s[n-3]))) | |
165 | { | |
166 | Perl_warner(aTHX_ WARN_Y2K, "Possible Y2K bug: %s", | |
167 | "about to append an integer to '19'"); | |
168 | } | |
169 | } | |
170 | #endif | |
171 | ||
43ebc500 JH |
172 | if (TARG == right) { |
173 | if (left == right) { | |
174 | /* $right = $right . $right; */ | |
175 | STRLEN rlen; | |
176 | char *rpv = SvPV(right, rlen); | |
37931a30 | 177 | |
43ebc500 | 178 | sv_catpvn(TARG, rpv, rlen); |
69b47968 | 179 | } |
43ebc500 JH |
180 | else /* $right = $left . $right; */ |
181 | sv_catsv(TARG, rcopy); | |
182 | } | |
183 | else { | |
184 | if (!SvOK(TARG)) /* Avoid warning when concatenating to undef. */ | |
185 | sv_setpv(TARG, ""); | |
186 | /* $other = $left . $right; */ | |
187 | /* $left = $left . $right; */ | |
188 | sv_catsv(TARG, right); | |
a0d0e21e | 189 | } |
43ebc500 | 190 | |
a0d0e21e LW |
191 | SETTARG; |
192 | RETURN; | |
748a9306 | 193 | } |
a0d0e21e LW |
194 | } |
195 | ||
196 | PP(pp_padsv) | |
197 | { | |
39644a26 | 198 | dSP; dTARGET; |
a0d0e21e | 199 | XPUSHs(TARG); |
533c011a NIS |
200 | if (PL_op->op_flags & OPf_MOD) { |
201 | if (PL_op->op_private & OPpLVAL_INTRO) | |
202 | SAVECLEARSV(PL_curpad[PL_op->op_targ]); | |
203 | else if (PL_op->op_private & OPpDEREF) { | |
8ec5e241 | 204 | PUTBACK; |
533c011a | 205 | vivify_ref(PL_curpad[PL_op->op_targ], PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
206 | SPAGAIN; |
207 | } | |
4633a7c4 | 208 | } |
a0d0e21e LW |
209 | RETURN; |
210 | } | |
211 | ||
212 | PP(pp_readline) | |
213 | { | |
f5284f61 | 214 | tryAMAGICunTARGET(iter, 0); |
3280af22 | 215 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 | 216 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f | 217 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 | 218 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 | 219 | else { |
f5284f61 IZ |
220 | dSP; |
221 | XPUSHs((SV*)PL_last_in_gv); | |
222 | PUTBACK; | |
cea2e8a9 | 223 | pp_rv2gv(); |
f5284f61 | 224 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 IZ |
225 | } |
226 | } | |
a0d0e21e LW |
227 | return do_readline(); |
228 | } | |
229 | ||
230 | PP(pp_eq) | |
231 | { | |
39644a26 | 232 | dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f AS |
233 | #ifndef NV_PRESERVES_UV |
234 | if (SvROK(TOPs) && SvROK(TOPm1s)) { | |
235 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPm1s))); | |
236 | RETURN; | |
237 | } | |
238 | #endif | |
28e5dec8 JH |
239 | #ifdef PERL_PRESERVE_IVUV |
240 | SvIV_please(TOPs); | |
241 | if (SvIOK(TOPs)) { | |
4c9fe80f AS |
242 | /* Unless the left argument is integer in range we are going |
243 | to have to use NV maths. Hence only attempt to coerce the | |
244 | right argument if we know the left is integer. */ | |
28e5dec8 JH |
245 | SvIV_please(TOPm1s); |
246 | if (SvIOK(TOPm1s)) { | |
247 | bool auvok = SvUOK(TOPm1s); | |
248 | bool buvok = SvUOK(TOPs); | |
a12c0f56 | 249 | |
28e5dec8 JH |
250 | if (!auvok && !buvok) { /* ## IV == IV ## */ |
251 | IV aiv = SvIVX(TOPm1s); | |
252 | IV biv = SvIVX(TOPs); | |
253 | ||
254 | SP--; | |
255 | SETs(boolSV(aiv == biv)); | |
256 | RETURN; | |
257 | } | |
258 | if (auvok && buvok) { /* ## UV == UV ## */ | |
259 | UV auv = SvUVX(TOPm1s); | |
260 | UV buv = SvUVX(TOPs); | |
261 | ||
262 | SP--; | |
263 | SETs(boolSV(auv == buv)); | |
264 | RETURN; | |
265 | } | |
266 | { /* ## Mixed IV,UV ## */ | |
267 | IV iv; | |
268 | UV uv; | |
269 | ||
270 | /* == is commutative so swap if needed (save code) */ | |
271 | if (auvok) { | |
272 | /* swap. top of stack (b) is the iv */ | |
273 | iv = SvIVX(TOPs); | |
274 | SP--; | |
275 | if (iv < 0) { | |
276 | /* As (a) is a UV, it's >0, so it cannot be == */ | |
277 | SETs(&PL_sv_no); | |
278 | RETURN; | |
279 | } | |
280 | uv = SvUVX(TOPs); | |
281 | } else { | |
282 | iv = SvIVX(TOPm1s); | |
283 | SP--; | |
284 | if (iv < 0) { | |
285 | /* As (b) is a UV, it's >0, so it cannot be == */ | |
286 | SETs(&PL_sv_no); | |
287 | RETURN; | |
288 | } | |
289 | uv = SvUVX(*(SP+1)); /* Do I want TOPp1s() ? */ | |
290 | } | |
291 | /* we know iv is >= 0 */ | |
292 | if (uv > (UV) IV_MAX) { | |
293 | SETs(&PL_sv_no); | |
294 | RETURN; | |
295 | } | |
296 | SETs(boolSV((UV)iv == uv)); | |
297 | RETURN; | |
298 | } | |
299 | } | |
300 | } | |
301 | #endif | |
a0d0e21e LW |
302 | { |
303 | dPOPnv; | |
54310121 | 304 | SETs(boolSV(TOPn == value)); |
a0d0e21e LW |
305 | RETURN; |
306 | } | |
307 | } | |
308 | ||
309 | PP(pp_preinc) | |
310 | { | |
39644a26 | 311 | dSP; |
68dc0745 | 312 | if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV) |
d470f89e | 313 | DIE(aTHX_ PL_no_modify); |
25da4f38 | 314 | if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) && |
55497cff PP |
315 | SvIVX(TOPs) != IV_MAX) |
316 | { | |
748a9306 | 317 | ++SvIVX(TOPs); |
55497cff | 318 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 319 | } |
28e5dec8 | 320 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 | 321 | sv_inc(TOPs); |
a0d0e21e LW |
322 | SvSETMAGIC(TOPs); |
323 | return NORMAL; | |
324 | } | |
325 | ||
326 | PP(pp_or) | |
327 | { | |
39644a26 | 328 | dSP; |
a0d0e21e LW |
329 | if (SvTRUE(TOPs)) |
330 | RETURN; | |
331 | else { | |
332 | --SP; | |
333 | RETURNOP(cLOGOP->op_other); | |
334 | } | |
335 | } | |
336 | ||
337 | PP(pp_add) | |
338 | { | |
39644a26 | 339 | dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 JH |
340 | useleft = USE_LEFT(TOPm1s); |
341 | #ifdef PERL_PRESERVE_IVUV | |
342 | /* We must see if we can perform the addition with integers if possible, | |
343 | as the integer code detects overflow while the NV code doesn't. | |
344 | If either argument hasn't had a numeric conversion yet attempt to get | |
345 | the IV. It's important to do this now, rather than just assuming that | |
346 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
347 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
348 | integer in case the second argument is IV=9223372036854775806 | |
349 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
350 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
351 | ||
352 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
353 | fp maths for integer values. |
354 | ||
a00b5bd3 | 355 | How to detect overflow? |
7dca457a NC |
356 | |
357 | C 99 section 6.2.6.1 says | |
358 | ||
359 | The range of nonnegative values of a signed integer type is a subrange | |
360 | of the corresponding unsigned integer type, and the representation of | |
361 | the same value in each type is the same. A computation involving | |
362 | unsigned operands can never overflow, because a result that cannot be | |
363 | represented by the resulting unsigned integer type is reduced modulo | |
364 | the number that is one greater than the largest value that can be | |
365 | represented by the resulting type. | |
366 | ||
367 | (the 9th paragraph) | |
368 | ||
369 | which I read as "unsigned ints wrap." | |
370 | ||
371 | signed integer overflow seems to be classed as "exception condition" | |
372 | ||
373 | If an exceptional condition occurs during the evaluation of an | |
374 | expression (that is, if the result is not mathematically defined or not | |
375 | in the range of representable values for its type), the behavior is | |
376 | undefined. | |
377 | ||
378 | (6.5, the 5th paragraph) | |
379 | ||
380 | I had assumed that on 2s complement machines signed arithmetic would | |
381 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
382 | everything perl builds on would be happy. After much wailing and | |
383 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
384 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
385 | unsigned code below is actually shorter than the old code. :-) | |
386 | */ | |
387 | ||
28e5dec8 JH |
388 | SvIV_please(TOPs); |
389 | if (SvIOK(TOPs)) { | |
390 | /* Unless the left argument is integer in range we are going to have to | |
391 | use NV maths. Hence only attempt to coerce the right argument if | |
392 | we know the left is integer. */ | |
7dca457a NC |
393 | register UV auv; |
394 | bool auvok; | |
395 | bool a_valid = 0; | |
396 | ||
28e5dec8 | 397 | if (!useleft) { |
7dca457a NC |
398 | auv = 0; |
399 | a_valid = auvok = 1; | |
400 | /* left operand is undef, treat as zero. + 0 is identity, | |
401 | Could SETi or SETu right now, but space optimise by not adding | |
402 | lots of code to speed up what is probably a rarish case. */ | |
403 | } else { | |
404 | /* Left operand is defined, so is it IV? */ | |
405 | SvIV_please(TOPm1s); | |
406 | if (SvIOK(TOPm1s)) { | |
407 | if ((auvok = SvUOK(TOPm1s))) | |
408 | auv = SvUVX(TOPm1s); | |
409 | else { | |
410 | register IV aiv = SvIVX(TOPm1s); | |
411 | if (aiv >= 0) { | |
412 | auv = aiv; | |
413 | auvok = 1; /* Now acting as a sign flag. */ | |
414 | } else { /* 2s complement assumption for IV_MIN */ | |
415 | auv = (UV)-aiv; | |
416 | } | |
417 | } | |
418 | a_valid = 1; | |
28e5dec8 JH |
419 | } |
420 | } | |
7dca457a NC |
421 | if (a_valid) { |
422 | bool result_good = 0; | |
423 | UV result; | |
424 | register UV buv; | |
28e5dec8 | 425 | bool buvok = SvUOK(TOPs); |
a00b5bd3 | 426 | |
7dca457a NC |
427 | if (buvok) |
428 | buv = SvUVX(TOPs); | |
429 | else { | |
430 | register IV biv = SvIVX(TOPs); | |
431 | if (biv >= 0) { | |
432 | buv = biv; | |
433 | buvok = 1; | |
434 | } else | |
435 | buv = (UV)-biv; | |
436 | } | |
437 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
438 | else "IV" now, independant of how it came in. | |
439 | if a, b represents positive, A, B negative, a maps to -A etc | |
440 | a + b => (a + b) | |
441 | A + b => -(a - b) | |
442 | a + B => (a - b) | |
443 | A + B => -(a + b) | |
444 | all UV maths. negate result if A negative. | |
445 | add if signs same, subtract if signs differ. */ | |
446 | ||
447 | if (auvok ^ buvok) { | |
448 | /* Signs differ. */ | |
449 | if (auv >= buv) { | |
450 | result = auv - buv; | |
451 | /* Must get smaller */ | |
452 | if (result <= auv) | |
453 | result_good = 1; | |
454 | } else { | |
455 | result = buv - auv; | |
456 | if (result <= buv) { | |
457 | /* result really should be -(auv-buv). as its negation | |
458 | of true value, need to swap our result flag */ | |
459 | auvok = !auvok; | |
460 | result_good = 1; | |
28e5dec8 JH |
461 | } |
462 | } | |
7dca457a NC |
463 | } else { |
464 | /* Signs same */ | |
465 | result = auv + buv; | |
466 | if (result >= auv) | |
467 | result_good = 1; | |
468 | } | |
469 | if (result_good) { | |
470 | SP--; | |
471 | if (auvok) | |
28e5dec8 | 472 | SETu( result ); |
7dca457a NC |
473 | else { |
474 | /* Negate result */ | |
475 | if (result <= (UV)IV_MIN) | |
476 | SETi( -(IV)result ); | |
477 | else { | |
478 | /* result valid, but out of range for IV. */ | |
479 | SETn( -(NV)result ); | |
28e5dec8 JH |
480 | } |
481 | } | |
7dca457a NC |
482 | RETURN; |
483 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
484 | } |
485 | } | |
486 | #endif | |
a0d0e21e | 487 | { |
28e5dec8 JH |
488 | dPOPnv; |
489 | if (!useleft) { | |
490 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
491 | SETn(value); | |
492 | RETURN; | |
493 | } | |
494 | SETn( value + TOPn ); | |
495 | RETURN; | |
a0d0e21e LW |
496 | } |
497 | } | |
498 | ||
499 | PP(pp_aelemfast) | |
500 | { | |
39644a26 | 501 | dSP; |
1d7c1841 | 502 | AV *av = GvAV(cGVOP_gv); |
533c011a NIS |
503 | U32 lval = PL_op->op_flags & OPf_MOD; |
504 | SV** svp = av_fetch(av, PL_op->op_private, lval); | |
3280af22 | 505 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 506 | EXTEND(SP, 1); |
be6c24e0 GS |
507 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
508 | sv = sv_mortalcopy(sv); | |
509 | PUSHs(sv); | |
a0d0e21e LW |
510 | RETURN; |
511 | } | |
512 | ||
513 | PP(pp_join) | |
514 | { | |
39644a26 | 515 | dSP; dMARK; dTARGET; |
a0d0e21e LW |
516 | MARK++; |
517 | do_join(TARG, *MARK, MARK, SP); | |
518 | SP = MARK; | |
519 | SETs(TARG); | |
520 | RETURN; | |
521 | } | |
522 | ||
523 | PP(pp_pushre) | |
524 | { | |
39644a26 | 525 | dSP; |
44a8e56a PP |
526 | #ifdef DEBUGGING |
527 | /* | |
528 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
529 | * will be enough to hold an OP*. | |
530 | */ | |
531 | SV* sv = sv_newmortal(); | |
532 | sv_upgrade(sv, SVt_PVLV); | |
533 | LvTYPE(sv) = '/'; | |
533c011a | 534 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a PP |
535 | XPUSHs(sv); |
536 | #else | |
6b88bc9c | 537 | XPUSHs((SV*)PL_op); |
44a8e56a | 538 | #endif |
a0d0e21e LW |
539 | RETURN; |
540 | } | |
541 | ||
542 | /* Oversized hot code. */ | |
543 | ||
544 | PP(pp_print) | |
545 | { | |
39644a26 | 546 | dSP; dMARK; dORIGMARK; |
a0d0e21e LW |
547 | GV *gv; |
548 | IO *io; | |
760ac839 | 549 | register PerlIO *fp; |
236988e4 | 550 | MAGIC *mg; |
a0d0e21e | 551 | |
533c011a | 552 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
553 | gv = (GV*)*++MARK; |
554 | else | |
3280af22 | 555 | gv = PL_defoutgv; |
155aba94 | 556 | if ((mg = SvTIED_mg((SV*)gv, 'q'))) { |
01bb7c6d | 557 | had_magic: |
68dc0745 | 558 | if (MARK == ORIGMARK) { |
1c846c1f | 559 | /* If using default handle then we need to make space to |
a60c0954 NIS |
560 | * pass object as 1st arg, so move other args up ... |
561 | */ | |
4352c267 | 562 | MEXTEND(SP, 1); |
68dc0745 PP |
563 | ++MARK; |
564 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
565 | ++SP; | |
566 | } | |
567 | PUSHMARK(MARK - 1); | |
33c27489 | 568 | *MARK = SvTIED_obj((SV*)gv, mg); |
68dc0745 | 569 | PUTBACK; |
236988e4 | 570 | ENTER; |
864dbfa3 | 571 | call_method("PRINT", G_SCALAR); |
236988e4 PP |
572 | LEAVE; |
573 | SPAGAIN; | |
68dc0745 PP |
574 | MARK = ORIGMARK + 1; |
575 | *MARK = *SP; | |
576 | SP = MARK; | |
236988e4 PP |
577 | RETURN; |
578 | } | |
a0d0e21e | 579 | if (!(io = GvIO(gv))) { |
01bb7c6d DC |
580 | if ((GvEGV(gv)) && (mg = SvTIED_mg((SV*)GvEGV(gv),'q'))) |
581 | goto had_magic; | |
2dd78f96 JH |
582 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
583 | report_evil_fh(gv, io, PL_op->op_type); | |
748a9306 | 584 | SETERRNO(EBADF,RMS$_IFI); |
a0d0e21e LW |
585 | goto just_say_no; |
586 | } | |
587 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 588 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 NC |
589 | if (IoIFP(io)) |
590 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); | |
2dd78f96 | 591 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f | 592 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e | 593 | } |
748a9306 | 594 | SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI); |
a0d0e21e LW |
595 | goto just_say_no; |
596 | } | |
597 | else { | |
598 | MARK++; | |
7889fe52 | 599 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e LW |
600 | while (MARK <= SP) { |
601 | if (!do_print(*MARK, fp)) | |
602 | break; | |
603 | MARK++; | |
604 | if (MARK <= SP) { | |
7889fe52 | 605 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e LW |
606 | MARK--; |
607 | break; | |
608 | } | |
609 | } | |
610 | } | |
611 | } | |
612 | else { | |
613 | while (MARK <= SP) { | |
614 | if (!do_print(*MARK, fp)) | |
615 | break; | |
616 | MARK++; | |
617 | } | |
618 | } | |
619 | if (MARK <= SP) | |
620 | goto just_say_no; | |
621 | else { | |
7889fe52 NIS |
622 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
623 | if (!do_print(PL_ors_sv, fp)) /* $\ */ | |
a0d0e21e LW |
624 | goto just_say_no; |
625 | ||
626 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 627 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
628 | goto just_say_no; |
629 | } | |
630 | } | |
631 | SP = ORIGMARK; | |
3280af22 | 632 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
633 | RETURN; |
634 | ||
635 | just_say_no: | |
636 | SP = ORIGMARK; | |
3280af22 | 637 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
638 | RETURN; |
639 | } | |
640 | ||
641 | PP(pp_rv2av) | |
642 | { | |
39644a26 | 643 | dSP; dTOPss; |
a0d0e21e LW |
644 | AV *av; |
645 | ||
646 | if (SvROK(sv)) { | |
647 | wasref: | |
f5284f61 IZ |
648 | tryAMAGICunDEREF(to_av); |
649 | ||
a0d0e21e LW |
650 | av = (AV*)SvRV(sv); |
651 | if (SvTYPE(av) != SVt_PVAV) | |
cea2e8a9 | 652 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a | 653 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 654 | SETs((SV*)av); |
a0d0e21e LW |
655 | RETURN; |
656 | } | |
78f9721b SM |
657 | else if (LVRET) { |
658 | if (GIMME == G_SCALAR) | |
659 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); | |
660 | SETs((SV*)av); | |
661 | RETURN; | |
662 | } | |
a0d0e21e LW |
663 | } |
664 | else { | |
665 | if (SvTYPE(sv) == SVt_PVAV) { | |
666 | av = (AV*)sv; | |
533c011a | 667 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 668 | SETs((SV*)av); |
a0d0e21e LW |
669 | RETURN; |
670 | } | |
78f9721b SM |
671 | else if (LVRET) { |
672 | if (GIMME == G_SCALAR) | |
673 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
674 | " scalar context"); | |
675 | SETs((SV*)av); | |
676 | RETURN; | |
677 | } | |
a0d0e21e LW |
678 | } |
679 | else { | |
67955e0c | 680 | GV *gv; |
1c846c1f | 681 | |
a0d0e21e | 682 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 683 | char *sym; |
c9d5ac95 | 684 | STRLEN len; |
748a9306 | 685 | |
a0d0e21e LW |
686 | if (SvGMAGICAL(sv)) { |
687 | mg_get(sv); | |
688 | if (SvROK(sv)) | |
689 | goto wasref; | |
690 | } | |
691 | if (!SvOK(sv)) { | |
533c011a NIS |
692 | if (PL_op->op_flags & OPf_REF || |
693 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 694 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 | 695 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 696 | report_uninit(); |
f5284f61 | 697 | if (GIMME == G_ARRAY) { |
c2444246 | 698 | (void)POPs; |
4633a7c4 | 699 | RETURN; |
f5284f61 IZ |
700 | } |
701 | RETSETUNDEF; | |
a0d0e21e | 702 | } |
c9d5ac95 | 703 | sym = SvPV(sv,len); |
35cd451c GS |
704 | if ((PL_op->op_flags & OPf_SPECIAL) && |
705 | !(PL_op->op_flags & OPf_MOD)) | |
706 | { | |
707 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV); | |
c9d5ac95 GS |
708 | if (!gv |
709 | && (!is_gv_magical(sym,len,0) | |
710 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV)))) | |
711 | { | |
35cd451c | 712 | RETSETUNDEF; |
c9d5ac95 | 713 | } |
35cd451c GS |
714 | } |
715 | else { | |
716 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 717 | DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); |
35cd451c GS |
718 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
719 | } | |
720 | } | |
721 | else { | |
67955e0c | 722 | gv = (GV*)sv; |
a0d0e21e | 723 | } |
67955e0c | 724 | av = GvAVn(gv); |
533c011a | 725 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 726 | av = save_ary(gv); |
533c011a | 727 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 728 | SETs((SV*)av); |
a0d0e21e LW |
729 | RETURN; |
730 | } | |
78f9721b SM |
731 | else if (LVRET) { |
732 | if (GIMME == G_SCALAR) | |
733 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
734 | " scalar context"); | |
735 | SETs((SV*)av); | |
736 | RETURN; | |
737 | } | |
a0d0e21e LW |
738 | } |
739 | } | |
740 | ||
741 | if (GIMME == G_ARRAY) { | |
742 | I32 maxarg = AvFILL(av) + 1; | |
c2444246 | 743 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f | 744 | EXTEND(SP, maxarg); |
93965878 | 745 | if (SvRMAGICAL(av)) { |
1c846c1f | 746 | U32 i; |
93965878 NIS |
747 | for (i=0; i < maxarg; i++) { |
748 | SV **svp = av_fetch(av, i, FALSE); | |
3280af22 | 749 | SP[i+1] = (svp) ? *svp : &PL_sv_undef; |
93965878 | 750 | } |
1c846c1f | 751 | } |
93965878 NIS |
752 | else { |
753 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
754 | } | |
a0d0e21e LW |
755 | SP += maxarg; |
756 | } | |
757 | else { | |
758 | dTARGET; | |
759 | I32 maxarg = AvFILL(av) + 1; | |
f5284f61 | 760 | SETi(maxarg); |
a0d0e21e LW |
761 | } |
762 | RETURN; | |
763 | } | |
764 | ||
765 | PP(pp_rv2hv) | |
766 | { | |
39644a26 | 767 | dSP; dTOPss; |
a0d0e21e LW |
768 | HV *hv; |
769 | ||
770 | if (SvROK(sv)) { | |
771 | wasref: | |
f5284f61 IZ |
772 | tryAMAGICunDEREF(to_hv); |
773 | ||
a0d0e21e | 774 | hv = (HV*)SvRV(sv); |
c750a3ec | 775 | if (SvTYPE(hv) != SVt_PVHV && SvTYPE(hv) != SVt_PVAV) |
cea2e8a9 | 776 | DIE(aTHX_ "Not a HASH reference"); |
533c011a | 777 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
778 | SETs((SV*)hv); |
779 | RETURN; | |
780 | } | |
78f9721b SM |
781 | else if (LVRET) { |
782 | if (GIMME == G_SCALAR) | |
783 | Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); | |
784 | SETs((SV*)hv); | |
785 | RETURN; | |
786 | } | |
a0d0e21e LW |
787 | } |
788 | else { | |
c750a3ec | 789 | if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) { |
a0d0e21e | 790 | hv = (HV*)sv; |
533c011a | 791 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
792 | SETs((SV*)hv); |
793 | RETURN; | |
794 | } | |
78f9721b SM |
795 | else if (LVRET) { |
796 | if (GIMME == G_SCALAR) | |
797 | Perl_croak(aTHX_ "Can't return hash to lvalue" | |
798 | " scalar context"); | |
799 | SETs((SV*)hv); | |
800 | RETURN; | |
801 | } | |
a0d0e21e LW |
802 | } |
803 | else { | |
67955e0c | 804 | GV *gv; |
1c846c1f | 805 | |
a0d0e21e | 806 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 807 | char *sym; |
c9d5ac95 | 808 | STRLEN len; |
748a9306 | 809 | |
a0d0e21e LW |
810 | if (SvGMAGICAL(sv)) { |
811 | mg_get(sv); | |
812 | if (SvROK(sv)) | |
813 | goto wasref; | |
814 | } | |
815 | if (!SvOK(sv)) { | |
533c011a NIS |
816 | if (PL_op->op_flags & OPf_REF || |
817 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 818 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 | 819 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 820 | report_uninit(); |
4633a7c4 LW |
821 | if (GIMME == G_ARRAY) { |
822 | SP--; | |
823 | RETURN; | |
824 | } | |
a0d0e21e LW |
825 | RETSETUNDEF; |
826 | } | |
c9d5ac95 | 827 | sym = SvPV(sv,len); |
35cd451c GS |
828 | if ((PL_op->op_flags & OPf_SPECIAL) && |
829 | !(PL_op->op_flags & OPf_MOD)) | |
830 | { | |
831 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV); | |
c9d5ac95 GS |
832 | if (!gv |
833 | && (!is_gv_magical(sym,len,0) | |
834 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV)))) | |
835 | { | |
35cd451c | 836 | RETSETUNDEF; |
c9d5ac95 | 837 | } |
35cd451c GS |
838 | } |
839 | else { | |
840 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 841 | DIE(aTHX_ PL_no_symref, sym, "a HASH"); |
35cd451c GS |
842 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
843 | } | |
844 | } | |
845 | else { | |
67955e0c | 846 | gv = (GV*)sv; |
a0d0e21e | 847 | } |
67955e0c | 848 | hv = GvHVn(gv); |
533c011a | 849 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 850 | hv = save_hash(gv); |
533c011a | 851 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
852 | SETs((SV*)hv); |
853 | RETURN; | |
854 | } | |
78f9721b SM |
855 | else if (LVRET) { |
856 | if (GIMME == G_SCALAR) | |
857 | Perl_croak(aTHX_ "Can't return hash to lvalue" | |
858 | " scalar context"); | |
859 | SETs((SV*)hv); | |
860 | RETURN; | |
861 | } | |
a0d0e21e LW |
862 | } |
863 | } | |
864 | ||
865 | if (GIMME == G_ARRAY) { /* array wanted */ | |
3280af22 | 866 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 | 867 | return do_kv(); |
a0d0e21e LW |
868 | } |
869 | else { | |
870 | dTARGET; | |
4b154ab5 GA |
871 | if (SvTYPE(hv) == SVt_PVAV) |
872 | hv = avhv_keys((AV*)hv); | |
b9c39e73 | 873 | if (HvFILL(hv)) |
57def98f JH |
874 | Perl_sv_setpvf(aTHX_ TARG, "%"IVdf"/%"IVdf, |
875 | (IV)HvFILL(hv), (IV)HvMAX(hv) + 1); | |
a0d0e21e LW |
876 | else |
877 | sv_setiv(TARG, 0); | |
c750a3ec | 878 | |
a0d0e21e LW |
879 | SETTARG; |
880 | RETURN; | |
881 | } | |
882 | } | |
883 | ||
10c8fecd GS |
884 | STATIC int |
885 | S_do_maybe_phash(pTHX_ AV *ary, SV **lelem, SV **firstlelem, SV **relem, | |
886 | SV **lastrelem) | |
887 | { | |
888 | OP *leftop; | |
10c8fecd GS |
889 | I32 i; |
890 | ||
891 | leftop = ((BINOP*)PL_op)->op_last; | |
892 | assert(leftop); | |
893 | assert(leftop->op_type == OP_NULL && leftop->op_targ == OP_LIST); | |
894 | leftop = ((LISTOP*)leftop)->op_first; | |
895 | assert(leftop); | |
896 | /* Skip PUSHMARK and each element already assigned to. */ | |
897 | for (i = lelem - firstlelem; i > 0; i--) { | |
898 | leftop = leftop->op_sibling; | |
899 | assert(leftop); | |
900 | } | |
901 | if (leftop->op_type != OP_RV2HV) | |
902 | return 0; | |
903 | ||
904 | /* pseudohash */ | |
905 | if (av_len(ary) > 0) | |
906 | av_fill(ary, 0); /* clear all but the fields hash */ | |
907 | if (lastrelem >= relem) { | |
908 | while (relem < lastrelem) { /* gobble up all the rest */ | |
909 | SV *tmpstr; | |
910 | assert(relem[0]); | |
911 | assert(relem[1]); | |
912 | /* Avoid a memory leak when avhv_store_ent dies. */ | |
913 | tmpstr = sv_newmortal(); | |
914 | sv_setsv(tmpstr,relem[1]); /* value */ | |
915 | relem[1] = tmpstr; | |
916 | if (avhv_store_ent(ary,relem[0],tmpstr,0)) | |
d16e9ed9 | 917 | (void)SvREFCNT_inc(tmpstr); |
10c8fecd GS |
918 | if (SvMAGICAL(ary) != 0 && SvSMAGICAL(tmpstr)) |
919 | mg_set(tmpstr); | |
920 | relem += 2; | |
921 | TAINT_NOT; | |
922 | } | |
923 | } | |
924 | if (relem == lastrelem) | |
925 | return 1; | |
926 | return 2; | |
927 | } | |
928 | ||
929 | STATIC void | |
930 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
931 | { | |
932 | if (*relem) { | |
933 | SV *tmpstr; | |
934 | if (ckWARN(WARN_MISC)) { | |
935 | if (relem == firstrelem && | |
936 | SvROK(*relem) && | |
937 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
938 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
939 | { | |
940 | Perl_warner(aTHX_ WARN_MISC, | |
941 | "Reference found where even-sized list expected"); | |
942 | } | |
943 | else | |
944 | Perl_warner(aTHX_ WARN_MISC, | |
945 | "Odd number of elements in hash assignment"); | |
946 | } | |
947 | if (SvTYPE(hash) == SVt_PVAV) { | |
948 | /* pseudohash */ | |
949 | tmpstr = sv_newmortal(); | |
950 | if (avhv_store_ent((AV*)hash,*relem,tmpstr,0)) | |
d16e9ed9 | 951 | (void)SvREFCNT_inc(tmpstr); |
10c8fecd GS |
952 | if (SvMAGICAL(hash) && SvSMAGICAL(tmpstr)) |
953 | mg_set(tmpstr); | |
954 | } | |
955 | else { | |
956 | HE *didstore; | |
957 | tmpstr = NEWSV(29,0); | |
958 | didstore = hv_store_ent(hash,*relem,tmpstr,0); | |
959 | if (SvMAGICAL(hash)) { | |
960 | if (SvSMAGICAL(tmpstr)) | |
961 | mg_set(tmpstr); | |
962 | if (!didstore) | |
963 | sv_2mortal(tmpstr); | |
964 | } | |
965 | } | |
966 | TAINT_NOT; | |
967 | } | |
968 | } | |
969 | ||
a0d0e21e LW |
970 | PP(pp_aassign) |
971 | { | |
39644a26 | 972 | dSP; |
3280af22 NIS |
973 | SV **lastlelem = PL_stack_sp; |
974 | SV **lastrelem = PL_stack_base + POPMARK; | |
975 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
976 | SV **firstlelem = lastrelem + 1; |
977 | ||
978 | register SV **relem; | |
979 | register SV **lelem; | |
980 | ||
981 | register SV *sv; | |
982 | register AV *ary; | |
983 | ||
54310121 | 984 | I32 gimme; |
a0d0e21e LW |
985 | HV *hash; |
986 | I32 i; | |
987 | int magic; | |
988 | ||
3280af22 | 989 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
a0d0e21e LW |
990 | |
991 | /* If there's a common identifier on both sides we have to take | |
992 | * special care that assigning the identifier on the left doesn't | |
993 | * clobber a value on the right that's used later in the list. | |
994 | */ | |
10c8fecd | 995 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 | 996 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd GS |
997 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
998 | /*SUPPRESS 560*/ | |
155aba94 | 999 | if ((sv = *relem)) { |
a1f49e72 | 1000 | TAINT_NOT; /* Each item is independent */ |
10c8fecd | 1001 | *relem = sv_mortalcopy(sv); |
a1f49e72 | 1002 | } |
10c8fecd | 1003 | } |
a0d0e21e LW |
1004 | } |
1005 | ||
1006 | relem = firstrelem; | |
1007 | lelem = firstlelem; | |
1008 | ary = Null(AV*); | |
1009 | hash = Null(HV*); | |
10c8fecd | 1010 | |
a0d0e21e | 1011 | while (lelem <= lastlelem) { |
bbce6d69 | 1012 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
1013 | sv = *lelem++; |
1014 | switch (SvTYPE(sv)) { | |
1015 | case SVt_PVAV: | |
1016 | ary = (AV*)sv; | |
748a9306 | 1017 | magic = SvMAGICAL(ary) != 0; |
10c8fecd GS |
1018 | if (PL_op->op_private & OPpASSIGN_HASH) { |
1019 | switch (do_maybe_phash(ary, lelem, firstlelem, relem, | |
1020 | lastrelem)) | |
1021 | { | |
1022 | case 0: | |
1023 | goto normal_array; | |
1024 | case 1: | |
1025 | do_oddball((HV*)ary, relem, firstrelem); | |
1026 | } | |
1027 | relem = lastrelem + 1; | |
1028 | break; | |
1029 | } | |
1030 | normal_array: | |
a0d0e21e | 1031 | av_clear(ary); |
7e42bd57 | 1032 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1033 | i = 0; |
1034 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1035 | SV **didstore; |
a0d0e21e LW |
1036 | sv = NEWSV(28,0); |
1037 | assert(*relem); | |
1038 | sv_setsv(sv,*relem); | |
1039 | *(relem++) = sv; | |
5117ca91 GS |
1040 | didstore = av_store(ary,i++,sv); |
1041 | if (magic) { | |
fb73857a PP |
1042 | if (SvSMAGICAL(sv)) |
1043 | mg_set(sv); | |
5117ca91 | 1044 | if (!didstore) |
8127e0e3 | 1045 | sv_2mortal(sv); |
5117ca91 | 1046 | } |
bbce6d69 | 1047 | TAINT_NOT; |
a0d0e21e LW |
1048 | } |
1049 | break; | |
10c8fecd | 1050 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e LW |
1051 | SV *tmpstr; |
1052 | ||
1053 | hash = (HV*)sv; | |
748a9306 | 1054 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e LW |
1055 | hv_clear(hash); |
1056 | ||
1057 | while (relem < lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1058 | HE *didstore; |
4633a7c4 | 1059 | if (*relem) |
a0d0e21e | 1060 | sv = *(relem++); |
4633a7c4 | 1061 | else |
3280af22 | 1062 | sv = &PL_sv_no, relem++; |
a0d0e21e LW |
1063 | tmpstr = NEWSV(29,0); |
1064 | if (*relem) | |
1065 | sv_setsv(tmpstr,*relem); /* value */ | |
1066 | *(relem++) = tmpstr; | |
5117ca91 GS |
1067 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1068 | if (magic) { | |
fb73857a PP |
1069 | if (SvSMAGICAL(tmpstr)) |
1070 | mg_set(tmpstr); | |
5117ca91 | 1071 | if (!didstore) |
8127e0e3 | 1072 | sv_2mortal(tmpstr); |
5117ca91 | 1073 | } |
bbce6d69 | 1074 | TAINT_NOT; |
8e07c86e | 1075 | } |
6a0deba8 | 1076 | if (relem == lastrelem) { |
10c8fecd | 1077 | do_oddball(hash, relem, firstrelem); |
6a0deba8 | 1078 | relem++; |
1930e939 | 1079 | } |
a0d0e21e LW |
1080 | } |
1081 | break; | |
1082 | default: | |
6fc92669 GS |
1083 | if (SvIMMORTAL(sv)) { |
1084 | if (relem <= lastrelem) | |
1085 | relem++; | |
1086 | break; | |
a0d0e21e LW |
1087 | } |
1088 | if (relem <= lastrelem) { | |
1089 | sv_setsv(sv, *relem); | |
1090 | *(relem++) = sv; | |
1091 | } | |
1092 | else | |
3280af22 | 1093 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e LW |
1094 | SvSETMAGIC(sv); |
1095 | break; | |
1096 | } | |
1097 | } | |
3280af22 NIS |
1098 | if (PL_delaymagic & ~DM_DELAY) { |
1099 | if (PL_delaymagic & DM_UID) { | |
a0d0e21e | 1100 | #ifdef HAS_SETRESUID |
b28d0864 | 1101 | (void)setresuid(PL_uid,PL_euid,(Uid_t)-1); |
56febc5e AD |
1102 | #else |
1103 | # ifdef HAS_SETREUID | |
3280af22 | 1104 | (void)setreuid(PL_uid,PL_euid); |
56febc5e AD |
1105 | # else |
1106 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
1107 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1108 | (void)setruid(PL_uid); | |
1109 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 1110 | } |
56febc5e AD |
1111 | # endif /* HAS_SETRUID */ |
1112 | # ifdef HAS_SETEUID | |
b28d0864 NIS |
1113 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
1114 | (void)seteuid(PL_uid); | |
1115 | PL_delaymagic &= ~DM_EUID; | |
a0d0e21e | 1116 | } |
56febc5e | 1117 | # endif /* HAS_SETEUID */ |
b28d0864 NIS |
1118 | if (PL_delaymagic & DM_UID) { |
1119 | if (PL_uid != PL_euid) | |
cea2e8a9 | 1120 | DIE(aTHX_ "No setreuid available"); |
b28d0864 | 1121 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e | 1122 | } |
56febc5e AD |
1123 | # endif /* HAS_SETREUID */ |
1124 | #endif /* HAS_SETRESUID */ | |
d8eceb89 JH |
1125 | PL_uid = PerlProc_getuid(); |
1126 | PL_euid = PerlProc_geteuid(); | |
a0d0e21e | 1127 | } |
3280af22 | 1128 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1129 | #ifdef HAS_SETRESGID |
b28d0864 | 1130 | (void)setresgid(PL_gid,PL_egid,(Gid_t)-1); |
56febc5e AD |
1131 | #else |
1132 | # ifdef HAS_SETREGID | |
3280af22 | 1133 | (void)setregid(PL_gid,PL_egid); |
56febc5e AD |
1134 | # else |
1135 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
1136 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1137 | (void)setrgid(PL_gid); | |
1138 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 1139 | } |
56febc5e AD |
1140 | # endif /* HAS_SETRGID */ |
1141 | # ifdef HAS_SETEGID | |
b28d0864 NIS |
1142 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
1143 | (void)setegid(PL_gid); | |
1144 | PL_delaymagic &= ~DM_EGID; | |
a0d0e21e | 1145 | } |
56febc5e | 1146 | # endif /* HAS_SETEGID */ |
b28d0864 NIS |
1147 | if (PL_delaymagic & DM_GID) { |
1148 | if (PL_gid != PL_egid) | |
cea2e8a9 | 1149 | DIE(aTHX_ "No setregid available"); |
b28d0864 | 1150 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e | 1151 | } |
56febc5e AD |
1152 | # endif /* HAS_SETREGID */ |
1153 | #endif /* HAS_SETRESGID */ | |
d8eceb89 JH |
1154 | PL_gid = PerlProc_getgid(); |
1155 | PL_egid = PerlProc_getegid(); | |
a0d0e21e | 1156 | } |
3280af22 | 1157 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e | 1158 | } |
3280af22 | 1159 | PL_delaymagic = 0; |
54310121 PP |
1160 | |
1161 | gimme = GIMME_V; | |
1162 | if (gimme == G_VOID) | |
1163 | SP = firstrelem - 1; | |
1164 | else if (gimme == G_SCALAR) { | |
1165 | dTARGET; | |
1166 | SP = firstrelem; | |
1167 | SETi(lastrelem - firstrelem + 1); | |
1168 | } | |
1169 | else { | |
a0d0e21e LW |
1170 | if (ary || hash) |
1171 | SP = lastrelem; | |
1172 | else | |
1173 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 1174 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 1175 | while (relem <= SP) |
3280af22 | 1176 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 1177 | } |
54310121 | 1178 | RETURN; |
a0d0e21e LW |
1179 | } |
1180 | ||
8782bef2 GB |
1181 | PP(pp_qr) |
1182 | { | |
39644a26 | 1183 | dSP; |
8782bef2 GB |
1184 | register PMOP *pm = cPMOP; |
1185 | SV *rv = sv_newmortal(); | |
57668c4d | 1186 | SV *sv = newSVrv(rv, "Regexp"); |
8782bef2 GB |
1187 | sv_magic(sv,(SV*)ReREFCNT_inc(pm->op_pmregexp),'r',0,0); |
1188 | RETURNX(PUSHs(rv)); | |
1189 | } | |
1190 | ||
a0d0e21e LW |
1191 | PP(pp_match) |
1192 | { | |
39644a26 | 1193 | dSP; dTARG; |
a0d0e21e LW |
1194 | register PMOP *pm = cPMOP; |
1195 | register char *t; | |
1196 | register char *s; | |
1197 | char *strend; | |
1198 | I32 global; | |
f722798b IZ |
1199 | I32 r_flags = REXEC_CHECKED; |
1200 | char *truebase; /* Start of string */ | |
d9f97599 | 1201 | register REGEXP *rx = pm->op_pmregexp; |
b3eb6a9b | 1202 | bool rxtainted; |
a0d0e21e LW |
1203 | I32 gimme = GIMME; |
1204 | STRLEN len; | |
748a9306 | 1205 | I32 minmatch = 0; |
3280af22 | 1206 | I32 oldsave = PL_savestack_ix; |
f86702cc | 1207 | I32 update_minmatch = 1; |
e60df1fa | 1208 | I32 had_zerolen = 0; |
a0d0e21e | 1209 | |
533c011a | 1210 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
1211 | TARG = POPs; |
1212 | else { | |
54b9620d | 1213 | TARG = DEFSV; |
a0d0e21e LW |
1214 | EXTEND(SP,1); |
1215 | } | |
ffc61ed2 | 1216 | PL_reg_sv = TARG; |
c277df42 | 1217 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e LW |
1218 | s = SvPV(TARG, len); |
1219 | strend = s + len; | |
1220 | if (!s) | |
2269b42e | 1221 | DIE(aTHX_ "panic: pp_match"); |
b3eb6a9b | 1222 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 | 1223 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 1224 | TAINT_NOT; |
a0d0e21e | 1225 | |
48c036b1 | 1226 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 | 1227 | failure: |
a0d0e21e LW |
1228 | if (gimme == G_ARRAY) |
1229 | RETURN; | |
1230 | RETPUSHNO; | |
1231 | } | |
1232 | ||
3280af22 NIS |
1233 | if (!rx->prelen && PL_curpm) { |
1234 | pm = PL_curpm; | |
d9f97599 | 1235 | rx = pm->op_pmregexp; |
a0d0e21e | 1236 | } |
d9f97599 | 1237 | if (rx->minlen > len) goto failure; |
c277df42 | 1238 | |
a0d0e21e | 1239 | truebase = t = s; |
ad94a511 IZ |
1240 | |
1241 | /* XXXX What part of this is needed with true \G-support? */ | |
155aba94 | 1242 | if ((global = pm->op_pmflags & PMf_GLOBAL)) { |
cf93c79d | 1243 | rx->startp[0] = -1; |
a0d0e21e LW |
1244 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
1245 | MAGIC* mg = mg_find(TARG, 'g'); | |
565764a8 | 1246 | if (mg && mg->mg_len >= 0) { |
b7a35066 | 1247 | if (!(rx->reganch & ROPT_GPOS_SEEN)) |
1c846c1f | 1248 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e HS |
1249 | else if (rx->reganch & ROPT_ANCH_GPOS) { |
1250 | r_flags |= REXEC_IGNOREPOS; | |
1c846c1f | 1251 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e | 1252 | } |
748a9306 | 1253 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc | 1254 | update_minmatch = 0; |
748a9306 | 1255 | } |
a0d0e21e LW |
1256 | } |
1257 | } | |
db615365 | 1258 | if ((!global && rx->nparens) |
0ef3e39e HS |
1259 | || SvTEMP(TARG) || PL_sawampersand) |
1260 | r_flags |= REXEC_COPY_STR; | |
1c846c1f | 1261 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
1262 | r_flags |= REXEC_SCREAM; |
1263 | ||
a0d0e21e | 1264 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 NIS |
1265 | SAVEINT(PL_multiline); |
1266 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
1267 | } |
1268 | ||
1269 | play_it_again: | |
cf93c79d IZ |
1270 | if (global && rx->startp[0] != -1) { |
1271 | t = s = rx->endp[0] + truebase; | |
d9f97599 | 1272 | if ((s + rx->minlen) > strend) |
a0d0e21e | 1273 | goto nope; |
f86702cc | 1274 | if (update_minmatch++) |
e60df1fa | 1275 | minmatch = had_zerolen; |
a0d0e21e | 1276 | } |
60aeb6fd NIS |
1277 | if (rx->reganch & RE_USE_INTUIT && |
1278 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { | |
ee0b7718 | 1279 | PL_bostr = truebase; |
f722798b IZ |
1280 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1281 | ||
1282 | if (!s) | |
1283 | goto nope; | |
1284 | if ( (rx->reganch & ROPT_CHECK_ALL) | |
1c846c1f | 1285 | && !PL_sawampersand |
f722798b IZ |
1286 | && ((rx->reganch & ROPT_NOSCAN) |
1287 | || !((rx->reganch & RE_INTUIT_TAIL) | |
05b4157f GS |
1288 | && (r_flags & REXEC_SCREAM))) |
1289 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
f722798b | 1290 | goto yup; |
a0d0e21e | 1291 | } |
cea2e8a9 | 1292 | if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 | 1293 | { |
3280af22 | 1294 | PL_curpm = pm; |
a0d0e21e | 1295 | if (pm->op_pmflags & PMf_ONCE) |
48c036b1 | 1296 | pm->op_pmdynflags |= PMdf_USED; |
a0d0e21e LW |
1297 | goto gotcha; |
1298 | } | |
1299 | else | |
1300 | goto ret_no; | |
1301 | /*NOTREACHED*/ | |
1302 | ||
1303 | gotcha: | |
72311751 GS |
1304 | if (rxtainted) |
1305 | RX_MATCH_TAINTED_on(rx); | |
1306 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1307 | if (gimme == G_ARRAY) { |
ffc61ed2 | 1308 | I32 nparens, i, len; |
a0d0e21e | 1309 | |
ffc61ed2 JH |
1310 | nparens = rx->nparens; |
1311 | if (global && !nparens) | |
a0d0e21e LW |
1312 | i = 1; |
1313 | else | |
1314 | i = 0; | |
c277df42 | 1315 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1316 | EXTEND(SP, nparens + i); |
1317 | EXTEND_MORTAL(nparens + i); | |
1318 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e LW |
1319 | PUSHs(sv_newmortal()); |
1320 | /*SUPPRESS 560*/ | |
cf93c79d IZ |
1321 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
1322 | len = rx->endp[i] - rx->startp[i]; | |
1323 | s = rx->startp[i] + truebase; | |
a0d0e21e | 1324 | sv_setpvn(*SP, s, len); |
ffc61ed2 | 1325 | if (DO_UTF8(TARG)) |
a197cbdd | 1326 | SvUTF8_on(*SP); |
a0d0e21e LW |
1327 | } |
1328 | } | |
1329 | if (global) { | |
cf93c79d IZ |
1330 | had_zerolen = (rx->startp[0] != -1 |
1331 | && rx->startp[0] == rx->endp[0]); | |
c277df42 | 1332 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1333 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1334 | goto play_it_again; |
1335 | } | |
ffc61ed2 | 1336 | else if (!nparens) |
bde848c5 | 1337 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1338 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1339 | RETURN; |
1340 | } | |
1341 | else { | |
1342 | if (global) { | |
1343 | MAGIC* mg = 0; | |
1344 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
1345 | mg = mg_find(TARG, 'g'); | |
1346 | if (!mg) { | |
1347 | sv_magic(TARG, (SV*)0, 'g', Nullch, 0); | |
1348 | mg = mg_find(TARG, 'g'); | |
1349 | } | |
cf93c79d IZ |
1350 | if (rx->startp[0] != -1) { |
1351 | mg->mg_len = rx->endp[0]; | |
d9f97599 | 1352 | if (rx->startp[0] == rx->endp[0]) |
748a9306 LW |
1353 | mg->mg_flags |= MGf_MINMATCH; |
1354 | else | |
1355 | mg->mg_flags &= ~MGf_MINMATCH; | |
1356 | } | |
a0d0e21e | 1357 | } |
4633a7c4 | 1358 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1359 | RETPUSHYES; |
1360 | } | |
1361 | ||
f722798b | 1362 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1363 | if (rxtainted) |
1364 | RX_MATCH_TAINTED_on(rx); | |
1365 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1366 | PL_curpm = pm; |
a0d0e21e | 1367 | if (pm->op_pmflags & PMf_ONCE) |
48c036b1 | 1368 | pm->op_pmdynflags |= PMdf_USED; |
cf93c79d IZ |
1369 | if (RX_MATCH_COPIED(rx)) |
1370 | Safefree(rx->subbeg); | |
1371 | RX_MATCH_COPIED_off(rx); | |
1372 | rx->subbeg = Nullch; | |
a0d0e21e | 1373 | if (global) { |
d9f97599 | 1374 | rx->subbeg = truebase; |
cf93c79d | 1375 | rx->startp[0] = s - truebase; |
60aeb6fd NIS |
1376 | if (DO_UTF8(PL_reg_sv)) { |
1377 | char *t = (char*)utf8_hop((U8*)s, rx->minlen); | |
1378 | rx->endp[0] = t - truebase; | |
1379 | } | |
1380 | else { | |
1381 | rx->endp[0] = s - truebase + rx->minlen; | |
1382 | } | |
cf93c79d | 1383 | rx->sublen = strend - truebase; |
a0d0e21e | 1384 | goto gotcha; |
1c846c1f | 1385 | } |
3280af22 | 1386 | if (PL_sawampersand) { |
cf93c79d | 1387 | I32 off; |
a0d0e21e | 1388 | |
cf93c79d IZ |
1389 | rx->subbeg = savepvn(t, strend - t); |
1390 | rx->sublen = strend - t; | |
1391 | RX_MATCH_COPIED_on(rx); | |
1392 | off = rx->startp[0] = s - t; | |
f722798b | 1393 | rx->endp[0] = off + rx->minlen; |
cf93c79d IZ |
1394 | } |
1395 | else { /* startp/endp are used by @- @+. */ | |
1396 | rx->startp[0] = s - truebase; | |
f722798b | 1397 | rx->endp[0] = s - truebase + rx->minlen; |
a0d0e21e | 1398 | } |
fc19f8d0 | 1399 | rx->nparens = rx->lastparen = 0; /* used by @- and @+ */ |
4633a7c4 | 1400 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1401 | RETPUSHYES; |
1402 | ||
1403 | nope: | |
a0d0e21e | 1404 | ret_no: |
c90c0ff4 | 1405 | if (global && !(pm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e LW |
1406 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
1407 | MAGIC* mg = mg_find(TARG, 'g'); | |
1408 | if (mg) | |
565764a8 | 1409 | mg->mg_len = -1; |
a0d0e21e LW |
1410 | } |
1411 | } | |
4633a7c4 | 1412 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1413 | if (gimme == G_ARRAY) |
1414 | RETURN; | |
1415 | RETPUSHNO; | |
1416 | } | |
1417 | ||
1418 | OP * | |
864dbfa3 | 1419 | Perl_do_readline(pTHX) |
a0d0e21e LW |
1420 | { |
1421 | dSP; dTARGETSTACKED; | |
1422 | register SV *sv; | |
1423 | STRLEN tmplen = 0; | |
1424 | STRLEN offset; | |
760ac839 | 1425 | PerlIO *fp; |
3280af22 | 1426 | register IO *io = GvIO(PL_last_in_gv); |
533c011a | 1427 | register I32 type = PL_op->op_type; |
54310121 | 1428 | I32 gimme = GIMME_V; |
e79b0511 | 1429 | MAGIC *mg; |
a0d0e21e | 1430 | |
155aba94 | 1431 | if ((mg = SvTIED_mg((SV*)PL_last_in_gv, 'q'))) { |
e79b0511 | 1432 | PUSHMARK(SP); |
33c27489 | 1433 | XPUSHs(SvTIED_obj((SV*)PL_last_in_gv, mg)); |
e79b0511 PP |
1434 | PUTBACK; |
1435 | ENTER; | |
864dbfa3 | 1436 | call_method("READLINE", gimme); |
e79b0511 PP |
1437 | LEAVE; |
1438 | SPAGAIN; | |
54310121 PP |
1439 | if (gimme == G_SCALAR) |
1440 | SvSetMagicSV_nosteal(TARG, TOPs); | |
e79b0511 PP |
1441 | RETURN; |
1442 | } | |
a0d0e21e LW |
1443 | fp = Nullfp; |
1444 | if (io) { | |
1445 | fp = IoIFP(io); | |
1446 | if (!fp) { | |
1447 | if (IoFLAGS(io) & IOf_ARGV) { | |
1448 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1449 | IoLINES(io) = 0; |
3280af22 | 1450 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1451 | IoFLAGS(io) &= ~IOf_START; |
9d116dd7 | 1452 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 NIS |
1453 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1454 | SvSETMAGIC(GvSV(PL_last_in_gv)); | |
a2008d6d GS |
1455 | fp = IoIFP(io); |
1456 | goto have_fp; | |
a0d0e21e LW |
1457 | } |
1458 | } | |
3280af22 | 1459 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1460 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1461 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1462 | } |
1463 | } | |
0d44d22b NC |
1464 | else if (type == OP_GLOB) |
1465 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1466 | } |
1467 | else if (type == OP_GLOB) | |
1468 | SP--; | |
a00b5bd3 | 1469 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 | 1470 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 | 1471 | } |
a0d0e21e LW |
1472 | } |
1473 | if (!fp) { | |
790090df HS |
1474 | if (ckWARN2(WARN_GLOB, WARN_CLOSED) |
1475 | && (!io || !(IoFLAGS(io) & IOf_START))) { | |
3f4520fe | 1476 | if (type == OP_GLOB) |
e476b1b5 | 1477 | Perl_warner(aTHX_ WARN_GLOB, |
af8c498a GS |
1478 | "glob failed (can't start child: %s)", |
1479 | Strerror(errno)); | |
69282e91 | 1480 | else |
bc37a18f | 1481 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe | 1482 | } |
54310121 | 1483 | if (gimme == G_SCALAR) { |
a0d0e21e LW |
1484 | (void)SvOK_off(TARG); |
1485 | PUSHTARG; | |
1486 | } | |
1487 | RETURN; | |
1488 | } | |
a2008d6d | 1489 | have_fp: |
54310121 | 1490 | if (gimme == G_SCALAR) { |
a0d0e21e | 1491 | sv = TARG; |
9607fc9c PP |
1492 | if (SvROK(sv)) |
1493 | sv_unref(sv); | |
a0d0e21e LW |
1494 | (void)SvUPGRADE(sv, SVt_PV); |
1495 | tmplen = SvLEN(sv); /* remember if already alloced */ | |
1496 | if (!tmplen) | |
1497 | Sv_Grow(sv, 80); /* try short-buffering it */ | |
1498 | if (type == OP_RCATLINE) | |
1499 | offset = SvCUR(sv); | |
1500 | else | |
1501 | offset = 0; | |
1502 | } | |
54310121 PP |
1503 | else { |
1504 | sv = sv_2mortal(NEWSV(57, 80)); | |
1505 | offset = 0; | |
1506 | } | |
fbad3eb5 | 1507 | |
3887d568 AP |
1508 | /* This should not be marked tainted if the fp is marked clean */ |
1509 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1510 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1511 | TAINT; \ | |
1512 | SvTAINTED_on(sv); \ | |
1513 | } | |
1514 | ||
684bef36 | 1515 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1516 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1517 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1518 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1519 | |
a0d0e21e | 1520 | for (;;) { |
09e8efcc | 1521 | PUTBACK; |
fbad3eb5 GS |
1522 | if (!sv_gets(sv, fp, offset) |
1523 | && (type == OP_GLOB || SNARF_EOF(gimme, PL_rs, io, sv))) | |
1524 | { | |
760ac839 | 1525 | PerlIO_clearerr(fp); |
a0d0e21e | 1526 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1527 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1528 | if (fp) |
1529 | continue; | |
3280af22 | 1530 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1531 | } |
1532 | else if (type == OP_GLOB) { | |
e476b1b5 GS |
1533 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
1534 | Perl_warner(aTHX_ WARN_GLOB, | |
4eb79ab5 | 1535 | "glob failed (child exited with status %d%s)", |
894356b3 | 1536 | (int)(STATUS_CURRENT >> 8), |
cf494569 | 1537 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 | 1538 | } |
a0d0e21e | 1539 | } |
54310121 | 1540 | if (gimme == G_SCALAR) { |
a0d0e21e | 1541 | (void)SvOK_off(TARG); |
09e8efcc | 1542 | SPAGAIN; |
a0d0e21e LW |
1543 | PUSHTARG; |
1544 | } | |
3887d568 | 1545 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1546 | RETURN; |
1547 | } | |
3887d568 | 1548 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1549 | IoLINES(io)++; |
b9fee9ba | 1550 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1551 | SvSETMAGIC(sv); |
09e8efcc | 1552 | SPAGAIN; |
a0d0e21e | 1553 | XPUSHs(sv); |
a0d0e21e LW |
1554 | if (type == OP_GLOB) { |
1555 | char *tmps; | |
1556 | ||
3280af22 | 1557 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd | 1558 | tmps = SvEND(sv) - 1; |
3280af22 | 1559 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd PP |
1560 | *tmps = '\0'; |
1561 | SvCUR(sv)--; | |
1562 | } | |
1563 | } | |
a0d0e21e LW |
1564 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1565 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && | |
1566 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) | |
1567 | break; | |
43384a1a | 1568 | if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1569 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1570 | continue; | |
1571 | } | |
1572 | } | |
54310121 | 1573 | if (gimme == G_ARRAY) { |
a0d0e21e LW |
1574 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1575 | SvLEN_set(sv, SvCUR(sv)+1); | |
1576 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1577 | } | |
1578 | sv = sv_2mortal(NEWSV(58, 80)); | |
1579 | continue; | |
1580 | } | |
54310121 | 1581 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e LW |
1582 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1583 | if (SvCUR(sv) < 60) | |
1584 | SvLEN_set(sv, 80); | |
1585 | else | |
1586 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ | |
1587 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1588 | } | |
1589 | RETURN; | |
1590 | } | |
1591 | } | |
1592 | ||
1593 | PP(pp_enter) | |
1594 | { | |
39644a26 | 1595 | dSP; |
c09156bb | 1596 | register PERL_CONTEXT *cx; |
533c011a | 1597 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e | 1598 | |
54310121 PP |
1599 | if (gimme == -1) { |
1600 | if (cxstack_ix >= 0) | |
1601 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1602 | else | |
1603 | gimme = G_SCALAR; | |
1604 | } | |
a0d0e21e LW |
1605 | |
1606 | ENTER; | |
1607 | ||
1608 | SAVETMPS; | |
924508f0 | 1609 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
1610 | |
1611 | RETURN; | |
1612 | } | |
1613 | ||
1614 | PP(pp_helem) | |
1615 | { | |
39644a26 | 1616 | dSP; |
760ac839 | 1617 | HE* he; |
ae77835f | 1618 | SV **svp; |
a0d0e21e | 1619 | SV *keysv = POPs; |
a0d0e21e | 1620 | HV *hv = (HV*)POPs; |
78f9721b | 1621 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a | 1622 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
be6c24e0 | 1623 | SV *sv; |
1c846c1f | 1624 | U32 hash = (SvFAKE(keysv) && SvREADONLY(keysv)) ? SvUVX(keysv) : 0; |
1f5346dc | 1625 | I32 preeminent; |
a0d0e21e | 1626 | |
ae77835f | 1627 | if (SvTYPE(hv) == SVt_PVHV) { |
1f5346dc SC |
1628 | if (PL_op->op_private & OPpLVAL_INTRO) |
1629 | preeminent = SvRMAGICAL(hv) ? 1 : hv_exists_ent(hv, keysv, 0); | |
1c846c1f | 1630 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
97fcbf96 | 1631 | svp = he ? &HeVAL(he) : 0; |
ae77835f MB |
1632 | } |
1633 | else if (SvTYPE(hv) == SVt_PVAV) { | |
0ebe0038 | 1634 | if (PL_op->op_private & OPpLVAL_INTRO) |
cea2e8a9 | 1635 | DIE(aTHX_ "Can't localize pseudo-hash element"); |
1c846c1f | 1636 | svp = avhv_fetch_ent((AV*)hv, keysv, lval && !defer, hash); |
ae77835f | 1637 | } |
c750a3ec | 1638 | else { |
a0d0e21e | 1639 | RETPUSHUNDEF; |
c750a3ec | 1640 | } |
a0d0e21e | 1641 | if (lval) { |
3280af22 | 1642 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 PP |
1643 | SV* lv; |
1644 | SV* key2; | |
2d8e6c8d GS |
1645 | if (!defer) { |
1646 | STRLEN n_a; | |
cea2e8a9 | 1647 | DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); |
2d8e6c8d | 1648 | } |
68dc0745 PP |
1649 | lv = sv_newmortal(); |
1650 | sv_upgrade(lv, SVt_PVLV); | |
1651 | LvTYPE(lv) = 'y'; | |
1652 | sv_magic(lv, key2 = newSVsv(keysv), 'y', Nullch, 0); | |
1653 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ | |
1654 | LvTARG(lv) = SvREFCNT_inc(hv); | |
1655 | LvTARGLEN(lv) = 1; | |
1656 | PUSHs(lv); | |
1657 | RETURN; | |
1658 | } | |
533c011a | 1659 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f | 1660 | if (HvNAME(hv) && isGV(*svp)) |
533c011a | 1661 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc SC |
1662 | else { |
1663 | if (!preeminent) { | |
1664 | STRLEN keylen; | |
1665 | char *key = SvPV(keysv, keylen); | |
57813020 | 1666 | SAVEDELETE(hv, savepvn(key,keylen), keylen); |
a12c0f56 | 1667 | } else |
1f5346dc SC |
1668 | save_helem(hv, keysv, svp); |
1669 | } | |
5f05dabc | 1670 | } |
533c011a NIS |
1671 | else if (PL_op->op_private & OPpDEREF) |
1672 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 1673 | } |
3280af22 | 1674 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
1675 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1676 | * Pushing the magical RHS on to the stack is useless, since | |
1677 | * that magic is soon destined to be misled by the local(), | |
1678 | * and thus the later pp_sassign() will fail to mg_get() the | |
1679 | * old value. This should also cure problems with delayed | |
1680 | * mg_get()s. GSAR 98-07-03 */ | |
1681 | if (!lval && SvGMAGICAL(sv)) | |
1682 | sv = sv_mortalcopy(sv); | |
1683 | PUSHs(sv); | |
a0d0e21e LW |
1684 | RETURN; |
1685 | } | |
1686 | ||
1687 | PP(pp_leave) | |
1688 | { | |
39644a26 | 1689 | dSP; |
c09156bb | 1690 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
1691 | register SV **mark; |
1692 | SV **newsp; | |
1693 | PMOP *newpm; | |
1694 | I32 gimme; | |
1695 | ||
533c011a | 1696 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1697 | cx = &cxstack[cxstack_ix]; |
3280af22 | 1698 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e LW |
1699 | } |
1700 | ||
1701 | POPBLOCK(cx,newpm); | |
1702 | ||
533c011a | 1703 | gimme = OP_GIMME(PL_op, -1); |
54310121 PP |
1704 | if (gimme == -1) { |
1705 | if (cxstack_ix >= 0) | |
1706 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1707 | else | |
1708 | gimme = G_SCALAR; | |
1709 | } | |
a0d0e21e | 1710 | |
a1f49e72 | 1711 | TAINT_NOT; |
54310121 PP |
1712 | if (gimme == G_VOID) |
1713 | SP = newsp; | |
1714 | else if (gimme == G_SCALAR) { | |
1715 | MARK = newsp + 1; | |
1716 | if (MARK <= SP) | |
1717 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) | |
1718 | *MARK = TOPs; | |
1719 | else | |
1720 | *MARK = sv_mortalcopy(TOPs); | |
a0d0e21e | 1721 | else { |
54310121 | 1722 | MEXTEND(mark,0); |
3280af22 | 1723 | *MARK = &PL_sv_undef; |
a0d0e21e | 1724 | } |
54310121 | 1725 | SP = MARK; |
a0d0e21e | 1726 | } |
54310121 | 1727 | else if (gimme == G_ARRAY) { |
a1f49e72 CS |
1728 | /* in case LEAVE wipes old return values */ |
1729 | for (mark = newsp + 1; mark <= SP; mark++) { | |
1730 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
a0d0e21e | 1731 | *mark = sv_mortalcopy(*mark); |
a1f49e72 CS |
1732 | TAINT_NOT; /* Each item is independent */ |
1733 | } | |
1734 | } | |
a0d0e21e | 1735 | } |
3280af22 | 1736 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e LW |
1737 | |
1738 | LEAVE; | |
1739 | ||
1740 | RETURN; | |
1741 | } | |
1742 | ||
1743 | PP(pp_iter) | |
1744 | { | |
39644a26 | 1745 | dSP; |
c09156bb | 1746 | register PERL_CONTEXT *cx; |
5f05dabc | 1747 | SV* sv; |
4633a7c4 | 1748 | AV* av; |
1d7c1841 | 1749 | SV **itersvp; |
a0d0e21e | 1750 | |
924508f0 | 1751 | EXTEND(SP, 1); |
a0d0e21e | 1752 | cx = &cxstack[cxstack_ix]; |
6b35e009 | 1753 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 | 1754 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1755 | |
1d7c1841 | 1756 | itersvp = CxITERVAR(cx); |
4633a7c4 | 1757 | av = cx->blk_loop.iterary; |
89ea2908 GA |
1758 | if (SvTYPE(av) != SVt_PVAV) { |
1759 | /* iterate ($min .. $max) */ | |
1760 | if (cx->blk_loop.iterlval) { | |
1761 | /* string increment */ | |
1762 | register SV* cur = cx->blk_loop.iterlval; | |
1763 | STRLEN maxlen; | |
1764 | char *max = SvPV((SV*)av, maxlen); | |
1765 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { | |
eaa5c2d6 | 1766 | #ifndef USE_THREADS /* don't risk potential race */ |
1d7c1841 | 1767 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1768 | /* safe to reuse old SV */ |
1d7c1841 | 1769 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1770 | } |
1c846c1f | 1771 | else |
eaa5c2d6 GA |
1772 | #endif |
1773 | { | |
1774 | /* we need a fresh SV every time so that loop body sees a | |
1775 | * completely new SV for closures/references to work as | |
1776 | * they used to */ | |
1d7c1841 GS |
1777 | SvREFCNT_dec(*itersvp); |
1778 | *itersvp = newSVsv(cur); | |
eaa5c2d6 | 1779 | } |
89ea2908 GA |
1780 | if (strEQ(SvPVX(cur), max)) |
1781 | sv_setiv(cur, 0); /* terminate next time */ | |
1782 | else | |
1783 | sv_inc(cur); | |
1784 | RETPUSHYES; | |
1785 | } | |
1786 | RETPUSHNO; | |
1787 | } | |
1788 | /* integer increment */ | |
1789 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) | |
1790 | RETPUSHNO; | |
7f61b687 | 1791 | |
eaa5c2d6 | 1792 | #ifndef USE_THREADS /* don't risk potential race */ |
1d7c1841 | 1793 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1794 | /* safe to reuse old SV */ |
1d7c1841 | 1795 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 | 1796 | } |
1c846c1f | 1797 | else |
eaa5c2d6 GA |
1798 | #endif |
1799 | { | |
1800 | /* we need a fresh SV every time so that loop body sees a | |
1801 | * completely new SV for closures/references to work as they | |
1802 | * used to */ | |
1d7c1841 GS |
1803 | SvREFCNT_dec(*itersvp); |
1804 | *itersvp = newSViv(cx->blk_loop.iterix++); | |
eaa5c2d6 | 1805 | } |
89ea2908 GA |
1806 | RETPUSHYES; |
1807 | } | |
1808 | ||
1809 | /* iterate array */ | |
3280af22 | 1810 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) |
4633a7c4 | 1811 | RETPUSHNO; |
a0d0e21e | 1812 | |
1d7c1841 | 1813 | SvREFCNT_dec(*itersvp); |
a0d0e21e | 1814 | |
155aba94 | 1815 | if ((sv = SvMAGICAL(av) |
1c846c1f | 1816 | ? *av_fetch(av, ++cx->blk_loop.iterix, FALSE) |
155aba94 | 1817 | : AvARRAY(av)[++cx->blk_loop.iterix])) |
a0d0e21e | 1818 | SvTEMP_off(sv); |
a0d0e21e | 1819 | else |
3280af22 | 1820 | sv = &PL_sv_undef; |
8b530633 | 1821 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc | 1822 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc PP |
1823 | if (lv && SvREFCNT(lv) > 1) { |
1824 | SvREFCNT_dec(lv); | |
1825 | lv = Nullsv; | |
1826 | } | |
5f05dabc PP |
1827 | if (lv) |
1828 | SvREFCNT_dec(LvTARG(lv)); | |
1829 | else { | |
68dc0745 | 1830 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc | 1831 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc | 1832 | LvTYPE(lv) = 'y'; |
68dc0745 | 1833 | sv_magic(lv, Nullsv, 'y', Nullch, 0); |
5f05dabc PP |
1834 | } |
1835 | LvTARG(lv) = SvREFCNT_inc(av); | |
1836 | LvTARGOFF(lv) = cx->blk_loop.iterix; | |
42718184 | 1837 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc PP |
1838 | sv = (SV*)lv; |
1839 | } | |
a0d0e21e | 1840 | |
1d7c1841 | 1841 | *itersvp = SvREFCNT_inc(sv); |
a0d0e21e LW |
1842 | RETPUSHYES; |
1843 | } | |
1844 | ||
1845 | PP(pp_subst) | |
1846 | { | |
39644a26 | 1847 | dSP; dTARG; |
a0d0e21e LW |
1848 | register PMOP *pm = cPMOP; |
1849 | PMOP *rpm = pm; | |
1850 | register SV *dstr; | |
1851 | register char *s; | |
1852 | char *strend; | |
1853 | register char *m; | |
1854 | char *c; | |
1855 | register char *d; | |
1856 | STRLEN clen; | |
1857 | I32 iters = 0; | |
1858 | I32 maxiters; | |
1859 | register I32 i; | |
1860 | bool once; | |
71be2cbc | 1861 | bool rxtainted; |
a0d0e21e | 1862 | char *orig; |
22e551b9 | 1863 | I32 r_flags; |
d9f97599 | 1864 | register REGEXP *rx = pm->op_pmregexp; |
a0d0e21e LW |
1865 | STRLEN len; |
1866 | int force_on_match = 0; | |
3280af22 | 1867 | I32 oldsave = PL_savestack_ix; |
792b2c16 JH |
1868 | bool do_utf8; |
1869 | STRLEN slen; | |
a0d0e21e | 1870 | |
5cd24f17 PP |
1871 | /* known replacement string? */ |
1872 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; | |
533c011a | 1873 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
1874 | TARG = POPs; |
1875 | else { | |
54b9620d | 1876 | TARG = DEFSV; |
a0d0e21e | 1877 | EXTEND(SP,1); |
1c846c1f | 1878 | } |
ffc61ed2 | 1879 | PL_reg_sv = TARG; |
792b2c16 | 1880 | do_utf8 = DO_UTF8(PL_reg_sv); |
eca06228 NIS |
1881 | if (SvFAKE(TARG) && SvREADONLY(TARG)) |
1882 | sv_force_normal(TARG); | |
68dc0745 PP |
1883 | if (SvREADONLY(TARG) |
1884 | || (SvTYPE(TARG) > SVt_PVLV | |
1885 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG)))) | |
d470f89e | 1886 | DIE(aTHX_ PL_no_modify); |
8ec5e241 NIS |
1887 | PUTBACK; |
1888 | ||
a0d0e21e | 1889 | s = SvPV(TARG, len); |
68dc0745 | 1890 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 1891 | force_on_match = 1; |
b3eb6a9b | 1892 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 NIS |
1893 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
1894 | if (PL_tainted) | |
b3eb6a9b | 1895 | rxtainted |= 2; |
9212bbba | 1896 | TAINT_NOT; |
a12c0f56 | 1897 | |
a0d0e21e LW |
1898 | force_it: |
1899 | if (!pm || !s) | |
2269b42e | 1900 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
1901 | |
1902 | strend = s + len; | |
a7514e1e | 1903 | slen = do_utf8 ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
1904 | maxiters = 2 * slen + 10; /* We can match twice at each |
1905 | position, once with zero-length, | |
1906 | second time with non-zero. */ | |
a0d0e21e | 1907 | |
3280af22 NIS |
1908 | if (!rx->prelen && PL_curpm) { |
1909 | pm = PL_curpm; | |
d9f97599 | 1910 | rx = pm->op_pmregexp; |
a0d0e21e | 1911 | } |
22e551b9 | 1912 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
9d080a66 | 1913 | ? REXEC_COPY_STR : 0; |
f722798b | 1914 | if (SvSCREAM(TARG)) |
22e551b9 | 1915 | r_flags |= REXEC_SCREAM; |
a0d0e21e | 1916 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 NIS |
1917 | SAVEINT(PL_multiline); |
1918 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
1919 | } |
1920 | orig = m = s; | |
f722798b | 1921 | if (rx->reganch & RE_USE_INTUIT) { |
ee0b7718 | 1922 | PL_bostr = orig; |
f722798b IZ |
1923 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1924 | ||
1925 | if (!s) | |
1926 | goto nope; | |
1927 | /* How to do it in subst? */ | |
1928 | /* if ( (rx->reganch & ROPT_CHECK_ALL) | |
1c846c1f | 1929 | && !PL_sawampersand |
f722798b IZ |
1930 | && ((rx->reganch & ROPT_NOSCAN) |
1931 | || !((rx->reganch & RE_INTUIT_TAIL) | |
1932 | && (r_flags & REXEC_SCREAM)))) | |
1933 | goto yup; | |
1934 | */ | |
a0d0e21e | 1935 | } |
71be2cbc PP |
1936 | |
1937 | /* only replace once? */ | |
a0d0e21e | 1938 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc PP |
1939 | |
1940 | /* known replacement string? */ | |
5cd24f17 | 1941 | c = dstr ? SvPV(dstr, clen) : Nullch; |
71be2cbc PP |
1942 | |
1943 | /* can do inplace substitution? */ | |
22e551b9 | 1944 | if (c && clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) |
d9f97599 | 1945 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN)) { |
f722798b IZ |
1946 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
1947 | r_flags | REXEC_CHECKED)) | |
1948 | { | |
8ec5e241 | 1949 | SPAGAIN; |
3280af22 | 1950 | PUSHs(&PL_sv_no); |
71be2cbc PP |
1951 | LEAVE_SCOPE(oldsave); |
1952 | RETURN; | |
1953 | } | |
1954 | if (force_on_match) { | |
1955 | force_on_match = 0; | |
1956 | s = SvPV_force(TARG, len); | |
1957 | goto force_it; | |
1958 | } | |
71be2cbc | 1959 | d = s; |
3280af22 | 1960 | PL_curpm = pm; |
71be2cbc PP |
1961 | SvSCREAM_off(TARG); /* disable possible screamer */ |
1962 | if (once) { | |
48c036b1 | 1963 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d IZ |
1964 | m = orig + rx->startp[0]; |
1965 | d = orig + rx->endp[0]; | |
71be2cbc PP |
1966 | s = orig; |
1967 | if (m - s > strend - d) { /* faster to shorten from end */ | |
1968 | if (clen) { | |
1969 | Copy(c, m, clen, char); | |
1970 | m += clen; | |
a0d0e21e | 1971 | } |
71be2cbc PP |
1972 | i = strend - d; |
1973 | if (i > 0) { | |
1974 | Move(d, m, i, char); | |
1975 | m += i; | |
a0d0e21e | 1976 | } |
71be2cbc PP |
1977 | *m = '\0'; |
1978 | SvCUR_set(TARG, m - s); | |
1979 | } | |
1980 | /*SUPPRESS 560*/ | |
155aba94 | 1981 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc PP |
1982 | d -= clen; |
1983 | m = d; | |
1984 | sv_chop(TARG, d-i); | |
1985 | s += i; | |
1986 | while (i--) | |
1987 | *--d = *--s; | |
1988 | if (clen) | |
1989 | Copy(c, m, clen, char); | |
1990 | } | |
1991 | else if (clen) { | |
1992 | d -= clen; | |
1993 | sv_chop(TARG, d); | |
1994 | Copy(c, d, clen, char); | |
1995 | } | |
1996 | else { | |
1997 | sv_chop(TARG, d); | |
1998 | } | |
48c036b1 | 1999 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2000 | SPAGAIN; |
3280af22 | 2001 | PUSHs(&PL_sv_yes); |
71be2cbc PP |
2002 | } |
2003 | else { | |
71be2cbc PP |
2004 | do { |
2005 | if (iters++ > maxiters) | |
cea2e8a9 | 2006 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2007 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2008 | m = rx->startp[0] + orig; |
71be2cbc | 2009 | /*SUPPRESS 560*/ |
155aba94 | 2010 | if ((i = m - s)) { |
71be2cbc PP |
2011 | if (s != d) |
2012 | Move(s, d, i, char); | |
2013 | d += i; | |
a0d0e21e | 2014 | } |
71be2cbc PP |
2015 | if (clen) { |
2016 | Copy(c, d, clen, char); | |
2017 | d += clen; | |
2018 | } | |
cf93c79d | 2019 | s = rx->endp[0] + orig; |
cea2e8a9 | 2020 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b IZ |
2021 | TARG, NULL, |
2022 | /* don't match same null twice */ | |
2023 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc PP |
2024 | if (s != d) { |
2025 | i = strend - s; | |
2026 | SvCUR_set(TARG, d - SvPVX(TARG) + i); | |
2027 | Move(s, d, i+1, char); /* include the NUL */ | |
a0d0e21e | 2028 | } |
48c036b1 | 2029 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2030 | SPAGAIN; |
71be2cbc | 2031 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e | 2032 | } |
80b498e0 | 2033 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 | 2034 | TAINT_IF(rxtainted); |
8ec5e241 NIS |
2035 | if (SvSMAGICAL(TARG)) { |
2036 | PUTBACK; | |
2037 | mg_set(TARG); | |
2038 | SPAGAIN; | |
2039 | } | |
9212bbba | 2040 | SvTAINT(TARG); |
71be2cbc PP |
2041 | LEAVE_SCOPE(oldsave); |
2042 | RETURN; | |
a0d0e21e | 2043 | } |
71be2cbc | 2044 | |
f722798b IZ |
2045 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2046 | r_flags | REXEC_CHECKED)) | |
2047 | { | |
60aeb6fd NIS |
2048 | bool isutf8; |
2049 | ||
a0d0e21e LW |
2050 | if (force_on_match) { |
2051 | force_on_match = 0; | |
2052 | s = SvPV_force(TARG, len); | |
2053 | goto force_it; | |
2054 | } | |
48c036b1 | 2055 | rxtainted |= RX_MATCH_TAINTED(rx); |
8ec5e241 | 2056 | dstr = NEWSV(25, len); |
a0d0e21e | 2057 | sv_setpvn(dstr, m, s-m); |
ffc61ed2 JH |
2058 | if (DO_UTF8(TARG)) |
2059 | SvUTF8_on(dstr); | |
3280af22 | 2060 | PL_curpm = pm; |
a0d0e21e | 2061 | if (!c) { |
c09156bb | 2062 | register PERL_CONTEXT *cx; |
8ec5e241 | 2063 | SPAGAIN; |
a0d0e21e LW |
2064 | PUSHSUBST(cx); |
2065 | RETURNOP(cPMOP->op_pmreplroot); | |
2066 | } | |
cf93c79d | 2067 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2068 | do { |
2069 | if (iters++ > maxiters) | |
cea2e8a9 | 2070 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2071 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2072 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e LW |
2073 | m = s; |
2074 | s = orig; | |
cf93c79d | 2075 | orig = rx->subbeg; |
a0d0e21e LW |
2076 | s = orig + (m - s); |
2077 | strend = s + (strend - m); | |
2078 | } | |
cf93c79d | 2079 | m = rx->startp[0] + orig; |
a0d0e21e | 2080 | sv_catpvn(dstr, s, m-s); |
cf93c79d | 2081 | s = rx->endp[0] + orig; |
a0d0e21e LW |
2082 | if (clen) |
2083 | sv_catpvn(dstr, c, clen); | |
2084 | if (once) | |
2085 | break; | |
ffc61ed2 JH |
2086 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2087 | TARG, NULL, r_flags)); | |
a0d0e21e | 2088 | sv_catpvn(dstr, s, strend - s); |
748a9306 | 2089 | |
4633a7c4 | 2090 | (void)SvOOK_off(TARG); |
cb0b1708 | 2091 | Safefree(SvPVX(TARG)); |
748a9306 LW |
2092 | SvPVX(TARG) = SvPVX(dstr); |
2093 | SvCUR_set(TARG, SvCUR(dstr)); | |
2094 | SvLEN_set(TARG, SvLEN(dstr)); | |
60aeb6fd | 2095 | isutf8 = DO_UTF8(dstr); |
748a9306 LW |
2096 | SvPVX(dstr) = 0; |
2097 | sv_free(dstr); | |
2098 | ||
48c036b1 | 2099 | TAINT_IF(rxtainted & 1); |
f878fbec | 2100 | SPAGAIN; |
48c036b1 GS |
2101 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2102 | ||
a0d0e21e | 2103 | (void)SvPOK_only(TARG); |
60aeb6fd NIS |
2104 | if (isutf8) |
2105 | SvUTF8_on(TARG); | |
48c036b1 | 2106 | TAINT_IF(rxtainted); |
a0d0e21e | 2107 | SvSETMAGIC(TARG); |
9212bbba | 2108 | SvTAINT(TARG); |
4633a7c4 | 2109 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2110 | RETURN; |
2111 | } | |
5cd24f17 | 2112 | goto ret_no; |
a0d0e21e LW |
2113 | |
2114 | nope: | |
1c846c1f | 2115 | ret_no: |
8ec5e241 | 2116 | SPAGAIN; |
3280af22 | 2117 | PUSHs(&PL_sv_no); |
4633a7c4 | 2118 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2119 | RETURN; |
2120 | } | |
2121 | ||
2122 | PP(pp_grepwhile) | |
2123 | { | |
39644a26 | 2124 | dSP; |
a0d0e21e LW |
2125 | |
2126 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2127 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2128 | ++*PL_markstack_ptr; | |
a0d0e21e LW |
2129 | LEAVE; /* exit inner scope */ |
2130 | ||
2131 | /* All done yet? */ | |
3280af22 | 2132 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2133 | I32 items; |
54310121 | 2134 | I32 gimme = GIMME_V; |
a0d0e21e LW |
2135 | |
2136 | LEAVE; /* exit outer scope */ | |
2137 | (void)POPMARK; /* pop src */ | |
3280af22 | 2138 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2139 | (void)POPMARK; /* pop dst */ |
3280af22 | 2140 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2141 | if (gimme == G_SCALAR) { |
a0d0e21e LW |
2142 | dTARGET; |
2143 | XPUSHi(items); | |
a0d0e21e | 2144 | } |
54310121 PP |
2145 | else if (gimme == G_ARRAY) |
2146 | SP += items; | |
a0d0e21e LW |
2147 | RETURN; |
2148 | } | |
2149 | else { | |
2150 | SV *src; | |
2151 | ||
2152 | ENTER; /* enter inner scope */ | |
1d7c1841 | 2153 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2154 | |
3280af22 | 2155 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2156 | SvTEMP_off(src); |
54b9620d | 2157 | DEFSV = src; |
a0d0e21e LW |
2158 | |
2159 | RETURNOP(cLOGOP->op_other); | |
2160 | } | |
2161 | } | |
2162 | ||
2163 | PP(pp_leavesub) | |
2164 | { | |
39644a26 | 2165 | dSP; |
a0d0e21e LW |
2166 | SV **mark; |
2167 | SV **newsp; | |
2168 | PMOP *newpm; | |
2169 | I32 gimme; | |
c09156bb | 2170 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2171 | SV *sv; |
a0d0e21e LW |
2172 | |
2173 | POPBLOCK(cx,newpm); | |
1c846c1f | 2174 | |
a1f49e72 | 2175 | TAINT_NOT; |
a0d0e21e LW |
2176 | if (gimme == G_SCALAR) { |
2177 | MARK = newsp + 1; | |
a29cdaf0 | 2178 | if (MARK <= SP) { |
a8bba7fa | 2179 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 IZ |
2180 | if (SvTEMP(TOPs)) { |
2181 | *MARK = SvREFCNT_inc(TOPs); | |
2182 | FREETMPS; | |
2183 | sv_2mortal(*MARK); | |
cd06dffe GS |
2184 | } |
2185 | else { | |
959e3673 | 2186 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2187 | FREETMPS; |
959e3673 GS |
2188 | *MARK = sv_mortalcopy(sv); |
2189 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2190 | } |
cd06dffe GS |
2191 | } |
2192 | else | |
a29cdaf0 | 2193 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe GS |
2194 | } |
2195 | else { | |
f86702cc | 2196 | MEXTEND(MARK, 0); |
3280af22 | 2197 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2198 | } |
2199 | SP = MARK; | |
2200 | } | |
54310121 | 2201 | else if (gimme == G_ARRAY) { |
f86702cc | 2202 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 | 2203 | if (!SvTEMP(*MARK)) { |
f86702cc | 2204 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2205 | TAINT_NOT; /* Each item is independent */ |
2206 | } | |
f86702cc | 2207 | } |
a0d0e21e | 2208 | } |
f86702cc | 2209 | PUTBACK; |
1c846c1f | 2210 | |
b0d9ce38 | 2211 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2212 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e LW |
2213 | |
2214 | LEAVE; | |
b0d9ce38 | 2215 | LEAVESUB(sv); |
a0d0e21e LW |
2216 | return pop_return(); |
2217 | } | |
2218 | ||
cd06dffe GS |
2219 | /* This duplicates the above code because the above code must not |
2220 | * get any slower by more conditions */ | |
2221 | PP(pp_leavesublv) | |
2222 | { | |
39644a26 | 2223 | dSP; |
cd06dffe GS |
2224 | SV **mark; |
2225 | SV **newsp; | |
2226 | PMOP *newpm; | |
2227 | I32 gimme; | |
2228 | register PERL_CONTEXT *cx; | |
b0d9ce38 | 2229 | SV *sv; |
cd06dffe GS |
2230 | |
2231 | POPBLOCK(cx,newpm); | |
1c846c1f | 2232 | |
cd06dffe GS |
2233 | TAINT_NOT; |
2234 | ||
2235 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { | |
2236 | /* We are an argument to a function or grep(). | |
2237 | * This kind of lvalueness was legal before lvalue | |
2238 | * subroutines too, so be backward compatible: | |
2239 | * cannot report errors. */ | |
2240 | ||
2241 | /* Scalar context *is* possible, on the LHS of -> only, | |
2242 | * as in f()->meth(). But this is not an lvalue. */ | |
2243 | if (gimme == G_SCALAR) | |
2244 | goto temporise; | |
2245 | if (gimme == G_ARRAY) { | |
a8bba7fa | 2246 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe GS |
2247 | goto temporise_array; |
2248 | EXTEND_MORTAL(SP - newsp); | |
2249 | for (mark = newsp + 1; mark <= SP; mark++) { | |
2250 | if (SvTEMP(*mark)) | |
2251 | /* empty */ ; | |
2252 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) | |
2253 | *mark = sv_mortalcopy(*mark); | |
2254 | else { | |
2255 | /* Can be a localized value subject to deletion. */ | |
2256 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2257 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2258 | } |
2259 | } | |
2260 | } | |
2261 | } | |
2262 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ | |
2263 | /* Here we go for robustness, not for speed, so we change all | |
2264 | * the refcounts so the caller gets a live guy. Cannot set | |
2265 | * TEMP, so sv_2mortal is out of question. */ | |
a8bba7fa | 2266 | if (!CvLVALUE(cx->blk_sub.cv)) { |
b0d9ce38 | 2267 | POPSUB(cx,sv); |
d470f89e | 2268 | PL_curpm = newpm; |
b0d9ce38 GS |
2269 | LEAVE; |
2270 | LEAVESUB(sv); | |
d470f89e GS |
2271 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2272 | } | |
cd06dffe GS |
2273 | if (gimme == G_SCALAR) { |
2274 | MARK = newsp + 1; | |
2275 | EXTEND_MORTAL(1); | |
2276 | if (MARK == SP) { | |
d470f89e | 2277 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
b0d9ce38 | 2278 | POPSUB(cx,sv); |
d470f89e | 2279 | PL_curpm = newpm; |
b0d9ce38 GS |
2280 | LEAVE; |
2281 | LEAVESUB(sv); | |
d470f89e | 2282 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
cd06dffe | 2283 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); |
d470f89e | 2284 | } |
cd06dffe GS |
2285 | else { /* Can be a localized value |
2286 | * subject to deletion. */ | |
2287 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2288 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2289 | } |
2290 | } | |
d470f89e | 2291 | else { /* Should not happen? */ |
b0d9ce38 | 2292 | POPSUB(cx,sv); |
d470f89e | 2293 | PL_curpm = newpm; |
b0d9ce38 GS |
2294 | LEAVE; |
2295 | LEAVESUB(sv); | |
d470f89e | 2296 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe | 2297 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e | 2298 | } |
cd06dffe GS |
2299 | SP = MARK; |
2300 | } | |
2301 | else if (gimme == G_ARRAY) { | |
2302 | EXTEND_MORTAL(SP - newsp); | |
2303 | for (mark = newsp + 1; mark <= SP; mark++) { | |
d470f89e GS |
2304 | if (SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
2305 | /* Might be flattened array after $#array = */ | |
2306 | PUTBACK; | |
b0d9ce38 | 2307 | POPSUB(cx,sv); |
d470f89e | 2308 | PL_curpm = newpm; |
b0d9ce38 GS |
2309 | LEAVE; |
2310 | LEAVESUB(sv); | |
d470f89e | 2311 | DIE(aTHX_ "Can't return %s from lvalue subroutine", |
cd06dffe GS |
2312 | (*mark != &PL_sv_undef) |
2313 | ? (SvREADONLY(TOPs) | |
2314 | ? "a readonly value" : "a temporary") | |
2315 | : "an uninitialized value"); | |
d470f89e | 2316 | } |
cd06dffe | 2317 | else { |
cd06dffe GS |
2318 | /* Can be a localized value subject to deletion. */ |
2319 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2320 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2321 | } |
2322 | } | |
2323 | } | |
2324 | } | |
2325 | else { | |
2326 | if (gimme == G_SCALAR) { | |
2327 | temporise: | |
2328 | MARK = newsp + 1; | |
2329 | if (MARK <= SP) { | |
a8bba7fa | 2330 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe GS |
2331 | if (SvTEMP(TOPs)) { |
2332 | *MARK = SvREFCNT_inc(TOPs); | |
2333 | FREETMPS; | |
2334 | sv_2mortal(*MARK); | |
2335 | } | |
2336 | else { | |
959e3673 | 2337 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe | 2338 | FREETMPS; |
959e3673 GS |
2339 | *MARK = sv_mortalcopy(sv); |
2340 | SvREFCNT_dec(sv); | |
cd06dffe GS |
2341 | } |
2342 | } | |
2343 | else | |
2344 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
2345 | } | |
2346 | else { | |
2347 | MEXTEND(MARK, 0); | |
2348 | *MARK = &PL_sv_undef; | |
2349 | } | |
2350 | SP = MARK; | |
2351 | } | |
2352 | else if (gimme == G_ARRAY) { | |
2353 | temporise_array: | |
2354 | for (MARK = newsp + 1; MARK <= SP; MARK++) { | |
2355 | if (!SvTEMP(*MARK)) { | |
2356 | *MARK = sv_mortalcopy(*MARK); | |
2357 | TAINT_NOT; /* Each item is independent */ | |
2358 | } | |
2359 | } | |
2360 | } | |
2361 | } | |
2362 | PUTBACK; | |
1c846c1f | 2363 | |
b0d9ce38 | 2364 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe GS |
2365 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2366 | ||
2367 | LEAVE; | |
b0d9ce38 | 2368 | LEAVESUB(sv); |
cd06dffe GS |
2369 | return pop_return(); |
2370 | } | |
2371 | ||
2372 | ||
76e3520e | 2373 | STATIC CV * |
cea2e8a9 | 2374 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 | 2375 | { |
3280af22 | 2376 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 GS |
2377 | |
2378 | if (!PERLDB_SUB_NN) { | |
2379 | GV *gv = CvGV(cv); | |
2380 | ||
2381 | save_item(dbsv); | |
2382 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) | |
1c846c1f | 2383 | || strEQ(GvNAME(gv), "END") |
491527d0 GS |
2384 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
2385 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) | |
2386 | && (gv = (GV*)*svp) ))) { | |
2387 | /* Use GV from the stack as a fallback. */ | |
2388 | /* GV is potentially non-unique, or contain different CV. */ | |
c2e66d9e GS |
2389 | SV *tmp = newRV((SV*)cv); |
2390 | sv_setsv(dbsv, tmp); | |
2391 | SvREFCNT_dec(tmp); | |
491527d0 GS |
2392 | } |
2393 | else { | |
2394 | gv_efullname3(dbsv, gv, Nullch); | |
2395 | } | |
3de9ffa1 MB |
2396 | } |
2397 | else { | |
155aba94 GS |
2398 | (void)SvUPGRADE(dbsv, SVt_PVIV); |
2399 | (void)SvIOK_on(dbsv); | |
491527d0 | 2400 | SAVEIV(SvIVX(dbsv)); |
5bc28da9 | 2401 | SvIVX(dbsv) = PTR2IV(cv); /* Do it the quickest way */ |
3de9ffa1 | 2402 | } |
491527d0 | 2403 | |
3de9ffa1 | 2404 | if (CvXSUB(cv)) |
3280af22 NIS |
2405 | PL_curcopdb = PL_curcop; |
2406 | cv = GvCV(PL_DBsub); | |
3de9ffa1 MB |
2407 | return cv; |
2408 | } | |
2409 | ||
a0d0e21e LW |
2410 | PP(pp_entersub) |
2411 | { | |
39644a26 | 2412 | dSP; dPOPss; |
a0d0e21e LW |
2413 | GV *gv; |
2414 | HV *stash; | |
2415 | register CV *cv; | |
c09156bb | 2416 | register PERL_CONTEXT *cx; |
5d94fbed | 2417 | I32 gimme; |
533c011a | 2418 | bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2419 | |
2420 | if (!sv) | |
cea2e8a9 | 2421 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e LW |
2422 | switch (SvTYPE(sv)) { |
2423 | default: | |
2424 | if (!SvROK(sv)) { | |
748a9306 | 2425 | char *sym; |
2d8e6c8d | 2426 | STRLEN n_a; |
748a9306 | 2427 | |
3280af22 | 2428 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a | 2429 | if (hasargs) |
3280af22 | 2430 | SP = PL_stack_base + POPMARK; |
a0d0e21e | 2431 | RETURN; |
fb73857a | 2432 | } |
15ff848f CS |
2433 | if (SvGMAGICAL(sv)) { |
2434 | mg_get(sv); | |
2435 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; | |
2436 | } | |
2437 | else | |
2d8e6c8d | 2438 | sym = SvPV(sv, n_a); |
15ff848f | 2439 | if (!sym) |
cea2e8a9 | 2440 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2441 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 | 2442 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 | 2443 | cv = get_cv(sym, TRUE); |
a0d0e21e LW |
2444 | break; |
2445 | } | |
f5284f61 IZ |
2446 | { |
2447 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ | |
2448 | tryAMAGICunDEREF(to_cv); | |
2449 | } | |
a0d0e21e LW |
2450 | cv = (CV*)SvRV(sv); |
2451 | if (SvTYPE(cv) == SVt_PVCV) | |
2452 | break; | |
2453 | /* FALL THROUGH */ | |
2454 | case SVt_PVHV: | |
2455 | case SVt_PVAV: | |
cea2e8a9 | 2456 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e LW |
2457 | case SVt_PVCV: |
2458 | cv = (CV*)sv; | |
2459 | break; | |
2460 | case SVt_PVGV: | |
8ebc5c01 | 2461 | if (!(cv = GvCVu((GV*)sv))) |
f6ec51f7 GS |
2462 | cv = sv_2cv(sv, &stash, &gv, FALSE); |
2463 | if (!cv) { | |
2464 | ENTER; | |
2465 | SAVETMPS; | |
2466 | goto try_autoload; | |
2467 | } | |
2468 | break; | |
a0d0e21e LW |
2469 | } |
2470 | ||
2471 | ENTER; | |
2472 | SAVETMPS; | |
2473 | ||
2474 | retry: | |
a0d0e21e | 2475 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
44a8e56a | 2476 | GV* autogv; |
22239a37 | 2477 | SV* sub_name; |
44a8e56a PP |
2478 | |
2479 | /* anonymous or undef'd function leaves us no recourse */ | |
2480 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
cea2e8a9 | 2481 | DIE(aTHX_ "Undefined subroutine called"); |
67caa1fe | 2482 | |
44a8e56a PP |
2483 | /* autoloaded stub? */ |
2484 | if (cv != GvCV(gv)) { | |
2485 | cv = GvCV(gv); | |
a0d0e21e | 2486 | } |
44a8e56a | 2487 | /* should call AUTOLOAD now? */ |
67caa1fe | 2488 | else { |
f6ec51f7 GS |
2489 | try_autoload: |
2490 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), | |
2491 | FALSE))) | |
2492 | { | |
2493 | cv = GvCV(autogv); | |
2494 | } | |
2495 | /* sorry */ | |
2496 | else { | |
2497 | sub_name = sv_newmortal(); | |
2498 | gv_efullname3(sub_name, gv, Nullch); | |
cea2e8a9 | 2499 | DIE(aTHX_ "Undefined subroutine &%s called", SvPVX(sub_name)); |
f6ec51f7 | 2500 | } |
67caa1fe GS |
2501 | } |
2502 | if (!cv) | |
cea2e8a9 | 2503 | DIE(aTHX_ "Not a CODE reference"); |
67caa1fe | 2504 | goto retry; |
a0d0e21e LW |
2505 | } |
2506 | ||
54310121 | 2507 | gimme = GIMME_V; |
67caa1fe | 2508 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
4f01c5a5 | 2509 | cv = get_db_sub(&sv, cv); |
67caa1fe | 2510 | if (!cv) |
cea2e8a9 | 2511 | DIE(aTHX_ "No DBsub routine"); |
67caa1fe | 2512 | } |
a0d0e21e | 2513 | |
11343788 | 2514 | #ifdef USE_THREADS |
3de9ffa1 MB |
2515 | /* |
2516 | * First we need to check if the sub or method requires locking. | |
458fb581 MB |
2517 | * If so, we gain a lock on the CV, the first argument or the |
2518 | * stash (for static methods), as appropriate. This has to be | |
2519 | * inline because for FAKE_THREADS, COND_WAIT inlines code to | |
2520 | * reschedule by returning a new op. | |
3de9ffa1 | 2521 | */ |
11343788 | 2522 | MUTEX_LOCK(CvMUTEXP(cv)); |
77a005ab MB |
2523 | if (CvFLAGS(cv) & CVf_LOCKED) { |
2524 | MAGIC *mg; | |
2525 | if (CvFLAGS(cv) & CVf_METHOD) { | |
533c011a NIS |
2526 | if (SP > PL_stack_base + TOPMARK) |
2527 | sv = *(PL_stack_base + TOPMARK + 1); | |
77a005ab | 2528 | else { |
13e08037 GS |
2529 | AV *av = (AV*)PL_curpad[0]; |
2530 | if (hasargs || !av || AvFILLp(av) < 0 | |
2531 | || !(sv = AvARRAY(av)[0])) | |
2532 | { | |
2533 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
d470f89e | 2534 | DIE(aTHX_ "no argument for locked method call"); |
13e08037 | 2535 | } |
77a005ab MB |
2536 | } |
2537 | if (SvROK(sv)) | |
2538 | sv = SvRV(sv); | |
458fb581 MB |
2539 | else { |
2540 | STRLEN len; | |
2541 | char *stashname = SvPV(sv, len); | |
2542 | sv = (SV*)gv_stashpvn(stashname, len, TRUE); | |
2543 | } | |
77a005ab MB |
2544 | } |
2545 | else { | |
2546 | sv = (SV*)cv; | |
2547 | } | |
2548 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
2549 | mg = condpair_magic(sv); | |
2550 | MUTEX_LOCK(MgMUTEXP(mg)); | |
2551 | if (MgOWNER(mg) == thr) | |
2552 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
2553 | else { | |
2554 | while (MgOWNER(mg)) | |
2555 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); | |
2556 | MgOWNER(mg) = thr; | |
bf49b057 | 2557 | DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: pp_entersub lock %p\n", |
1fd28e87 | 2558 | thr, sv);) |
77a005ab | 2559 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
c76ac1ee | 2560 | SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv); |
11343788 | 2561 | } |
77a005ab | 2562 | MUTEX_LOCK(CvMUTEXP(cv)); |
11343788 | 2563 | } |
3de9ffa1 MB |
2564 | /* |
2565 | * Now we have permission to enter the sub, we must distinguish | |
2566 | * four cases. (0) It's an XSUB (in which case we don't care | |
2567 | * about ownership); (1) it's ours already (and we're recursing); | |
2568 | * (2) it's free (but we may already be using a cached clone); | |
2569 | * (3) another thread owns it. Case (1) is easy: we just use it. | |
2570 | * Case (2) means we look for a clone--if we have one, use it | |
2571 | * otherwise grab ownership of cv. Case (3) means we look for a | |
2572 | * clone (for non-XSUBs) and have to create one if we don't | |
2573 | * already have one. | |
2574 | * Why look for a clone in case (2) when we could just grab | |
2575 | * ownership of cv straight away? Well, we could be recursing, | |
2576 | * i.e. we originally tried to enter cv while another thread | |
2577 | * owned it (hence we used a clone) but it has been freed up | |
2578 | * and we're now recursing into it. It may or may not be "better" | |
2579 | * to use the clone but at least CvDEPTH can be trusted. | |
2580 | */ | |
2581 | if (CvOWNER(cv) == thr || CvXSUB(cv)) | |
2582 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
11343788 | 2583 | else { |
3de9ffa1 MB |
2584 | /* Case (2) or (3) */ |
2585 | SV **svp; | |
2586 | ||
11343788 | 2587 | /* |
3de9ffa1 MB |
2588 | * XXX Might it be better to release CvMUTEXP(cv) while we |
2589 | * do the hv_fetch? We might find someone has pinched it | |
2590 | * when we look again, in which case we would be in case | |
2591 | * (3) instead of (2) so we'd have to clone. Would the fact | |
2592 | * that we released the mutex more quickly make up for this? | |
2593 | */ | |
b099ddc0 | 2594 | if ((svp = hv_fetch(thr->cvcache, (char *)cv, sizeof(cv), FALSE))) |
6ee623d5 | 2595 | { |
3de9ffa1 | 2596 | /* We already have a clone to use */ |
11343788 | 2597 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
3de9ffa1 | 2598 | cv = *(CV**)svp; |
bf49b057 | 2599 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1fd28e87 MB |
2600 | "entersub: %p already has clone %p:%s\n", |
2601 | thr, cv, SvPEEK((SV*)cv))); | |
3de9ffa1 MB |
2602 | CvOWNER(cv) = thr; |
2603 | SvREFCNT_inc(cv); | |
2604 | if (CvDEPTH(cv) == 0) | |
c76ac1ee | 2605 | SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); |
3de9ffa1 | 2606 | } |
11343788 | 2607 | else { |
3de9ffa1 MB |
2608 | /* (2) => grab ownership of cv. (3) => make clone */ |
2609 | if (!CvOWNER(cv)) { | |
2610 | CvOWNER(cv) = thr; | |
2611 | SvREFCNT_inc(cv); | |
11343788 | 2612 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
bf49b057 | 2613 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1fd28e87 MB |
2614 | "entersub: %p grabbing %p:%s in stash %s\n", |
2615 | thr, cv, SvPEEK((SV*)cv), CvSTASH(cv) ? | |
3de9ffa1 | 2616 | HvNAME(CvSTASH(cv)) : "(none)")); |
cd06dffe GS |
2617 | } |
2618 | else { | |
3de9ffa1 MB |
2619 | /* Make a new clone. */ |
2620 | CV *clonecv; | |
2621 | SvREFCNT_inc(cv); /* don't let it vanish from under us */ | |
2622 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
bf49b057 | 2623 | DEBUG_S((PerlIO_printf(Perl_debug_log, |
1fd28e87 MB |
2624 | "entersub: %p cloning %p:%s\n", |
2625 | thr, cv, SvPEEK((SV*)cv)))); | |
3de9ffa1 MB |
2626 | /* |
2627 | * We're creating a new clone so there's no race | |
2628 | * between the original MUTEX_UNLOCK and the | |
2629 | * SvREFCNT_inc since no one will be trying to undef | |
2630 | * it out from underneath us. At least, I don't think | |
2631 | * there's a race... | |
2632 | */ | |
2633 | clonecv = cv_clone(cv); | |
2634 | SvREFCNT_dec(cv); /* finished with this */ | |
199100c8 | 2635 | hv_store(thr->cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0); |
3de9ffa1 MB |
2636 | CvOWNER(clonecv) = thr; |
2637 | cv = clonecv; | |
11343788 | 2638 | SvREFCNT_inc(cv); |
11343788 | 2639 | } |
8b73bbec | 2640 | DEBUG_S(if (CvDEPTH(cv) != 0) |
bf49b057 | 2641 | PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", |
3de9ffa1 | 2642 | CvDEPTH(cv));); |
c76ac1ee | 2643 | SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); |
11343788 | 2644 | } |
3de9ffa1 | 2645 | } |
11343788 MB |
2646 | #endif /* USE_THREADS */ |
2647 | ||
a0d0e21e | 2648 | if (CvXSUB(cv)) { |
67caa1fe | 2649 | #ifdef PERL_XSUB_OLDSTYLE |
a0d0e21e | 2650 | if (CvOLDSTYLE(cv)) { |
20ce7b12 | 2651 | I32 (*fp3)(int,int,int); |
a0d0e21e LW |
2652 | dMARK; |
2653 | register I32 items = SP - MARK; | |
67955e0c | 2654 | /* We dont worry to copy from @_. */ |
924508f0 GS |
2655 | while (SP > mark) { |
2656 | SP[1] = SP[0]; | |
2657 | SP--; | |
a0d0e21e | 2658 | } |
3280af22 | 2659 | PL_stack_sp = mark + 1; |
1d7c1841 | 2660 | fp3 = (I32(*)(int,int,int))CvXSUB(cv); |
1c846c1f | 2661 | items = (*fp3)(CvXSUBANY(cv).any_i32, |
3280af22 | 2662 | MARK - PL_stack_base + 1, |
ecfc5424 | 2663 | items); |
3280af22 | 2664 | PL_stack_sp = PL_stack_base + items; |
a0d0e21e | 2665 | } |
67caa1fe GS |
2666 | else |
2667 | #endif /* PERL_XSUB_OLDSTYLE */ | |
2668 | { | |
748a9306 LW |
2669 | I32 markix = TOPMARK; |
2670 | ||
a0d0e21e | 2671 | PUTBACK; |
67955e0c PP |
2672 | |
2673 | if (!hasargs) { | |
2674 | /* Need to copy @_ to stack. Alternative may be to | |
2675 | * switch stack to @_, and copy return values | |
2676 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
6d4ff0d2 MB |
2677 | AV* av; |
2678 | I32 items; | |
2679 | #ifdef USE_THREADS | |
533c011a | 2680 | av = (AV*)PL_curpad[0]; |
6d4ff0d2 | 2681 | #else |
3280af22 | 2682 | av = GvAV(PL_defgv); |
6d4ff0d2 | 2683 | #endif /* USE_THREADS */ |
93965878 | 2684 | items = AvFILLp(av) + 1; /* @_ is not tieable */ |
67955e0c PP |
2685 | |
2686 | if (items) { | |
2687 | /* Mark is at the end of the stack. */ | |
924508f0 GS |
2688 | EXTEND(SP, items); |
2689 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2690 | SP += items; | |
1c846c1f | 2691 | PUTBACK ; |
67955e0c PP |
2692 | } |
2693 | } | |
67caa1fe GS |
2694 | /* We assume first XSUB in &DB::sub is the called one. */ |
2695 | if (PL_curcopdb) { | |
1d7c1841 | 2696 | SAVEVPTR(PL_curcop); |
3280af22 NIS |
2697 | PL_curcop = PL_curcopdb; |
2698 | PL_curcopdb = NULL; | |
67955e0c PP |
2699 | } |
2700 | /* Do we need to open block here? XXXX */ | |
0cb96387 | 2701 | (void)(*CvXSUB(cv))(aTHXo_ cv); |
748a9306 LW |
2702 | |
2703 | /* Enforce some sanity in scalar context. */ | |
3280af22 NIS |
2704 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { |
2705 | if (markix > PL_stack_sp - PL_stack_base) | |
2706 | *(PL_stack_base + markix) = &PL_sv_undef; | |
748a9306 | 2707 | else |
3280af22 NIS |
2708 | *(PL_stack_base + markix) = *PL_stack_sp; |
2709 | PL_stack_sp = PL_stack_base + markix; | |
748a9306 | 2710 | } |
a0d0e21e LW |
2711 | } |
2712 | LEAVE; | |
2713 | return NORMAL; | |
2714 | } | |
2715 | else { | |
2716 | dMARK; | |
2717 | register I32 items = SP - MARK; | |
a0d0e21e LW |
2718 | AV* padlist = CvPADLIST(cv); |
2719 | SV** svp = AvARRAY(padlist); | |
533c011a | 2720 | push_return(PL_op->op_next); |
a0d0e21e LW |
2721 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2722 | PUSHSUB(cx); | |
2723 | CvDEPTH(cv)++; | |
6b35e009 GS |
2724 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2725 | * that eval'' ops within this sub know the correct lexical space. | |
2726 | * Owing the speed considerations, we choose to search for the cv | |
2727 | * in doeval() instead. | |
2728 | */ | |
a0d0e21e LW |
2729 | if (CvDEPTH(cv) < 2) |
2730 | (void)SvREFCNT_inc(cv); | |
2731 | else { /* save temporaries on recursion? */ | |
1d7c1841 | 2732 | PERL_STACK_OVERFLOW_CHECK(); |
93965878 | 2733 | if (CvDEPTH(cv) > AvFILLp(padlist)) { |
a0d0e21e LW |
2734 | AV *av; |
2735 | AV *newpad = newAV(); | |
4aa0a1f7 | 2736 | SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]); |
93965878 | 2737 | I32 ix = AvFILLp((AV*)svp[1]); |
1d7c1841 | 2738 | I32 names_fill = AvFILLp((AV*)svp[0]); |
a0d0e21e | 2739 | svp = AvARRAY(svp[0]); |
748a9306 | 2740 | for ( ;ix > 0; ix--) { |
1d7c1841 | 2741 | if (names_fill >= ix && svp[ix] != &PL_sv_undef) { |
748a9306 | 2742 | char *name = SvPVX(svp[ix]); |
5f05dabc PP |
2743 | if ((SvFLAGS(svp[ix]) & SVf_FAKE) /* outer lexical? */ |
2744 | || *name == '&') /* anonymous code? */ | |
2745 | { | |
2746 | av_store(newpad, ix, SvREFCNT_inc(oldpad[ix])); | |
748a9306 LW |
2747 | } |
2748 | else { /* our own lexical */ | |
2749 | if (*name == '@') | |
2750 | av_store(newpad, ix, sv = (SV*)newAV()); | |
2751 | else if (*name == '%') | |
2752 | av_store(newpad, ix, sv = (SV*)newHV()); | |
2753 | else | |
2754 | av_store(newpad, ix, sv = NEWSV(0,0)); | |
2755 | SvPADMY_on(sv); | |
2756 | } | |
a0d0e21e | 2757 | } |
1d7c1841 GS |
2758 | else if (IS_PADGV(oldpad[ix]) || IS_PADCONST(oldpad[ix])) { |
2759 | av_store(newpad, ix, sv = SvREFCNT_inc(oldpad[ix])); | |
2760 | } | |
a0d0e21e | 2761 | else { |
748a9306 | 2762 | av_store(newpad, ix, sv = NEWSV(0,0)); |
a0d0e21e LW |
2763 | SvPADTMP_on(sv); |
2764 | } | |
2765 | } | |
2766 | av = newAV(); /* will be @_ */ | |
2767 | av_extend(av, 0); | |
2768 | av_store(newpad, 0, (SV*)av); | |
2769 | AvFLAGS(av) = AVf_REIFY; | |
2770 | av_store(padlist, CvDEPTH(cv), (SV*)newpad); | |
93965878 | 2771 | AvFILLp(padlist) = CvDEPTH(cv); |
a0d0e21e LW |
2772 | svp = AvARRAY(padlist); |
2773 | } | |
2774 | } | |
6d4ff0d2 MB |
2775 | #ifdef USE_THREADS |
2776 | if (!hasargs) { | |
533c011a | 2777 | AV* av = (AV*)PL_curpad[0]; |
6d4ff0d2 | 2778 | |
93965878 | 2779 | items = AvFILLp(av) + 1; |
6d4ff0d2 MB |
2780 | if (items) { |
2781 | /* Mark is at the end of the stack. */ | |
924508f0 GS |
2782 | EXTEND(SP, items); |
2783 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2784 | SP += items; | |
1c846c1f | 2785 | PUTBACK ; |
6d4ff0d2 MB |
2786 | } |
2787 | } | |
2788 | #endif /* USE_THREADS */ | |
1d7c1841 | 2789 | SAVEVPTR(PL_curpad); |
3280af22 | 2790 | PL_curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]); |
6d4ff0d2 MB |
2791 | #ifndef USE_THREADS |
2792 | if (hasargs) | |
2793 | #endif /* USE_THREADS */ | |
2794 | { | |
2795 | AV* av; | |
a0d0e21e LW |
2796 | SV** ary; |
2797 | ||
77a005ab | 2798 | #if 0 |
bf49b057 | 2799 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2800 | "%p entersub preparing @_\n", thr)); |
77a005ab | 2801 | #endif |
3280af22 | 2802 | av = (AV*)PL_curpad[0]; |
221373f0 GS |
2803 | if (AvREAL(av)) { |
2804 | /* @_ is normally not REAL--this should only ever | |
2805 | * happen when DB::sub() calls things that modify @_ */ | |
2806 | av_clear(av); | |
2807 | AvREAL_off(av); | |
2808 | AvREIFY_on(av); | |
2809 | } | |
6d4ff0d2 | 2810 | #ifndef USE_THREADS |
3280af22 NIS |
2811 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2812 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); | |
6d4ff0d2 | 2813 | #endif /* USE_THREADS */ |
7032098e | 2814 | cx->blk_sub.oldcurpad = PL_curpad; |
6d4ff0d2 | 2815 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2816 | ++MARK; |
2817 | ||
2818 | if (items > AvMAX(av) + 1) { | |
2819 | ary = AvALLOC(av); | |
2820 | if (AvARRAY(av) != ary) { | |
2821 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
2822 | SvPVX(av) = (char*)ary; | |
2823 | } | |
2824 | if (items > AvMAX(av) + 1) { | |
2825 | AvMAX(av) = items - 1; | |
2826 | Renew(ary,items,SV*); | |
2827 | AvALLOC(av) = ary; | |
2828 | SvPVX(av) = (char*)ary; | |
2829 | } | |
2830 | } | |
2831 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2832 | AvFILLp(av) = items - 1; |
1c846c1f | 2833 | |
a0d0e21e LW |
2834 | while (items--) { |
2835 | if (*MARK) | |
2836 | SvTEMP_off(*MARK); | |
2837 | MARK++; | |
2838 | } | |
2839 | } | |
4a925ff6 GS |
2840 | /* warning must come *after* we fully set up the context |
2841 | * stuff so that __WARN__ handlers can safely dounwind() | |
2842 | * if they want to | |
2843 | */ | |
2844 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) | |
2845 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) | |
2846 | sub_crush_depth(cv); | |
77a005ab | 2847 | #if 0 |
bf49b057 | 2848 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2849 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab | 2850 | #endif |
a0d0e21e LW |
2851 | RETURNOP(CvSTART(cv)); |
2852 | } | |
2853 | } | |
2854 | ||
44a8e56a | 2855 | void |
864dbfa3 | 2856 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a PP |
2857 | { |
2858 | if (CvANON(cv)) | |
cea2e8a9 | 2859 | Perl_warner(aTHX_ WARN_RECURSION, "Deep recursion on anonymous subroutine"); |
44a8e56a PP |
2860 | else { |
2861 | SV* tmpstr = sv_newmortal(); | |
2862 | gv_efullname3(tmpstr, CvGV(cv), Nullch); | |
1c846c1f | 2863 | Perl_warner(aTHX_ WARN_RECURSION, "Deep recursion on subroutine \"%s\"", |
599cee73 | 2864 | SvPVX(tmpstr)); |
44a8e56a PP |
2865 | } |
2866 | } | |
2867 | ||
a0d0e21e LW |
2868 | PP(pp_aelem) |
2869 | { | |
39644a26 | 2870 | dSP; |
a0d0e21e | 2871 | SV** svp; |
d804643f SC |
2872 | SV* elemsv = POPs; |
2873 | IV elem = SvIV(elemsv); | |
68dc0745 | 2874 | AV* av = (AV*)POPs; |
78f9721b | 2875 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a | 2876 | U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av)); |
be6c24e0 | 2877 | SV *sv; |
a0d0e21e | 2878 | |
e35c1634 | 2879 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
d804643f | 2880 | Perl_warner(aTHX_ WARN_MISC, "Use of reference \"%s\" as array index", SvPV_nolen(elemsv)); |
748a9306 | 2881 | if (elem > 0) |
3280af22 | 2882 | elem -= PL_curcop->cop_arybase; |
a0d0e21e LW |
2883 | if (SvTYPE(av) != SVt_PVAV) |
2884 | RETPUSHUNDEF; | |
68dc0745 | 2885 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2886 | if (lval) { |
3280af22 | 2887 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 PP |
2888 | SV* lv; |
2889 | if (!defer) | |
cea2e8a9 | 2890 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 PP |
2891 | lv = sv_newmortal(); |
2892 | sv_upgrade(lv, SVt_PVLV); | |
2893 | LvTYPE(lv) = 'y'; | |
2894 | sv_magic(lv, Nullsv, 'y', Nullch, 0); | |
2895 | LvTARG(lv) = SvREFCNT_inc(av); | |
2896 | LvTARGOFF(lv) = elem; | |
2897 | LvTARGLEN(lv) = 1; | |
2898 | PUSHs(lv); | |
2899 | RETURN; | |
2900 | } | |
533c011a | 2901 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 | 2902 | save_aelem(av, elem, svp); |
533c011a NIS |
2903 | else if (PL_op->op_private & OPpDEREF) |
2904 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 2905 | } |
3280af22 | 2906 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
2907 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2908 | sv = sv_mortalcopy(sv); | |
2909 | PUSHs(sv); | |
a0d0e21e LW |
2910 | RETURN; |
2911 | } | |
2912 | ||
02a9e968 | 2913 | void |
864dbfa3 | 2914 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 CS |
2915 | { |
2916 | if (SvGMAGICAL(sv)) | |
2917 | mg_get(sv); | |
2918 | if (!SvOK(sv)) { | |
2919 | if (SvREADONLY(sv)) | |
cea2e8a9 | 2920 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc PP |
2921 | if (SvTYPE(sv) < SVt_RV) |
2922 | sv_upgrade(sv, SVt_RV); | |
2923 | else if (SvTYPE(sv) >= SVt_PV) { | |
2924 | (void)SvOOK_off(sv); | |
2925 | Safefree(SvPVX(sv)); | |
2926 | SvLEN(sv) = SvCUR(sv) = 0; | |
2927 | } | |
68dc0745 | 2928 | switch (to_what) { |
5f05dabc | 2929 | case OPpDEREF_SV: |
8c52afec | 2930 | SvRV(sv) = NEWSV(355,0); |
5f05dabc PP |
2931 | break; |
2932 | case OPpDEREF_AV: | |
2933 | SvRV(sv) = (SV*)newAV(); | |
2934 | break; | |
2935 | case OPpDEREF_HV: | |
2936 | SvRV(sv) = (SV*)newHV(); | |
2937 | break; | |
2938 | } | |
02a9e968 CS |
2939 | SvROK_on(sv); |
2940 | SvSETMAGIC(sv); | |
2941 | } | |
2942 | } | |
2943 | ||
a0d0e21e LW |
2944 | PP(pp_method) |
2945 | { | |
39644a26 | 2946 | dSP; |
f5d5a27c CS |
2947 | SV* sv = TOPs; |
2948 | ||
2949 | if (SvROK(sv)) { | |
eda383f2 | 2950 | SV* rsv = SvRV(sv); |
f5d5a27c CS |
2951 | if (SvTYPE(rsv) == SVt_PVCV) { |
2952 | SETs(rsv); | |
2953 | RETURN; | |
2954 | } | |
2955 | } | |
2956 | ||
2957 | SETs(method_common(sv, Null(U32*))); | |
2958 | RETURN; | |
2959 | } | |
2960 | ||
2961 | PP(pp_method_named) | |
2962 | { | |
39644a26 | 2963 | dSP; |
f5d5a27c CS |
2964 | SV* sv = cSVOP->op_sv; |
2965 | U32 hash = SvUVX(sv); | |
2966 | ||
2967 | XPUSHs(method_common(sv, &hash)); | |
2968 | RETURN; | |
2969 | } | |
2970 | ||
2971 | STATIC SV * | |
2972 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
2973 | { | |
a0d0e21e LW |
2974 | SV* sv; |
2975 | SV* ob; | |
2976 | GV* gv; | |
56304f61 CS |
2977 | HV* stash; |
2978 | char* name; | |
f5d5a27c | 2979 | STRLEN namelen; |
ac91690f CS |
2980 | char* packname; |
2981 | STRLEN packlen; | |
a0d0e21e | 2982 | |
f5d5a27c | 2983 | name = SvPV(meth, namelen); |
3280af22 | 2984 | sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c | 2985 | |
4f1b7578 SC |
2986 | if (!sv) |
2987 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); | |
2988 | ||
16d20bd9 AD |
2989 | if (SvGMAGICAL(sv)) |
2990 | mg_get(sv); | |
a0d0e21e | 2991 | if (SvROK(sv)) |
16d20bd9 | 2992 | ob = (SV*)SvRV(sv); |
a0d0e21e LW |
2993 | else { |
2994 | GV* iogv; | |
a0d0e21e | 2995 | |
56304f61 | 2996 | packname = Nullch; |
a0d0e21e | 2997 | if (!SvOK(sv) || |
56304f61 | 2998 | !(packname = SvPV(sv, packlen)) || |
a0d0e21e LW |
2999 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
3000 | !(ob=(SV*)GvIO(iogv))) | |
3001 | { | |
1c846c1f | 3002 | if (!packname || |
fd400ab9 | 3003 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 3004 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
3005 | : !isIDFIRST(*packname) |
3006 | )) | |
3007 | { | |
f5d5a27c CS |
3008 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
3009 | SvOK(sv) ? "without a package or object reference" | |
3010 | : "on an undefined value"); | |
834a4ddd | 3011 | } |
56304f61 | 3012 | stash = gv_stashpvn(packname, packlen, TRUE); |
ac91690f | 3013 | goto fetch; |
a0d0e21e | 3014 | } |
3280af22 | 3015 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e LW |
3016 | } |
3017 | ||
f0d43078 GS |
3018 | if (!ob || !(SvOBJECT(ob) |
3019 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) | |
3020 | && SvOBJECT(ob)))) | |
3021 | { | |
f5d5a27c CS |
3022 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
3023 | name); | |
f0d43078 | 3024 | } |
a0d0e21e | 3025 | |
56304f61 | 3026 | stash = SvSTASH(ob); |
a0d0e21e | 3027 | |
ac91690f | 3028 | fetch: |
f5d5a27c CS |
3029 | /* shortcut for simple names */ |
3030 | if (hashp) { | |
3031 | HE* he = hv_fetch_ent(stash, meth, 0, *hashp); | |
3032 | if (he) { | |
3033 | gv = (GV*)HeVAL(he); | |
3034 | if (isGV(gv) && GvCV(gv) && | |
3035 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) | |
3036 | return (SV*)GvCV(gv); | |
3037 | } | |
3038 | } | |
3039 | ||
ac91690f | 3040 | gv = gv_fetchmethod(stash, name); |
56304f61 CS |
3041 | if (!gv) { |
3042 | char* leaf = name; | |
3043 | char* sep = Nullch; | |
3044 | char* p; | |
c1899e02 | 3045 | GV* gv; |
56304f61 CS |
3046 | |
3047 | for (p = name; *p; p++) { | |
3048 | if (*p == '\'') | |
3049 | sep = p, leaf = p + 1; | |
3050 | else if (*p == ':' && *(p + 1) == ':') | |
3051 | sep = p, leaf = p + 2; | |
3052 | } | |
3053 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { | |
1d7c1841 | 3054 | packname = sep ? CopSTASHPV(PL_curcop) : HvNAME(stash); |
56304f61 CS |
3055 | packlen = strlen(packname); |
3056 | } | |
3057 | else { | |
3058 | packname = name; | |
3059 | packlen = sep - name; | |
3060 | } | |
c1899e02 GS |
3061 | gv = gv_fetchpv(packname, 0, SVt_PVHV); |
3062 | if (gv && isGV(gv)) { | |
3063 | Perl_croak(aTHX_ | |
3064 | "Can't locate object method \"%s\" via package \"%s\"", | |
3065 | leaf, packname); | |
3066 | } | |
3067 | else { | |
3068 | Perl_croak(aTHX_ | |
f6e565ef | 3069 | "Can't locate object method \"%s\" via package \"%s\"" |
c1899e02 GS |
3070 | " (perhaps you forgot to load \"%s\"?)", |
3071 | leaf, packname, packname); | |
3072 | } | |
56304f61 | 3073 | } |
f5d5a27c | 3074 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e | 3075 | } |
22239a37 | 3076 | |
51371543 GS |
3077 | #ifdef USE_THREADS |
3078 | static void | |
3079 | unset_cvowner(pTHXo_ void *cvarg) | |
3080 | { | |
3081 | register CV* cv = (CV *) cvarg; | |
51371543 | 3082 | |
bf49b057 | 3083 | DEBUG_S((PerlIO_printf(Perl_debug_log, "%p unsetting CvOWNER of %p:%s\n", |
51371543 GS |
3084 | thr, cv, SvPEEK((SV*)cv)))); |
3085 | MUTEX_LOCK(CvMUTEXP(cv)); | |
3086 | DEBUG_S(if (CvDEPTH(cv) != 0) | |
bf49b057 | 3087 | PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", |
51371543 GS |
3088 | CvDEPTH(cv));); |
3089 | assert(thr == CvOWNER(cv)); | |
3090 | CvOWNER(cv) = 0; | |
3091 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
3092 | SvREFCNT_dec(cv); | |
3093 | } | |
3094 | #endif /* USE_THREADS */ |