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 | ||
4d1ff10f | 24 | #ifdef USE_5005THREADS |
acfe0abc | 25 | static void unset_cvowner(pTHX_ void *cvarg); |
4d1ff10f | 26 | #endif /* USE_5005THREADS */ |
11343788 | 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; | |
8d6d96c1 HS |
145 | STRLEN llen; |
146 | char* lpv; | |
147 | bool lbyte; | |
148 | STRLEN rlen; | |
149 | char* rpv = SvPV(right, rlen); /* mg_get(right) happens here */ | |
150 | bool rbyte = !SvUTF8(right); | |
151 | ||
152 | if (TARG == right && right != left) { | |
153 | right = sv_2mortal(newSVpvn(rpv, rlen)); | |
154 | rpv = SvPV(right, rlen); /* no point setting UTF8 here */ | |
155 | } | |
7889fe52 | 156 | |
8d6d96c1 HS |
157 | if (TARG != left) { |
158 | lpv = SvPV(left, llen); /* mg_get(left) may happen here */ | |
159 | lbyte = !SvUTF8(left); | |
160 | sv_setpvn(TARG, lpv, llen); | |
161 | if (!lbyte) | |
162 | SvUTF8_on(TARG); | |
163 | else | |
164 | SvUTF8_off(TARG); | |
165 | } | |
166 | else { /* TARG == left */ | |
167 | if (SvGMAGICAL(left)) | |
168 | mg_get(left); /* or mg_get(left) may happen here */ | |
169 | if (!SvOK(TARG)) | |
170 | sv_setpv(left, ""); | |
171 | lpv = SvPV_nomg(left, llen); | |
172 | lbyte = !SvUTF8(left); | |
173 | } | |
a12c0f56 | 174 | |
fd15e783 PN |
175 | #if defined(PERL_Y2KWARN) |
176 | if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K) && SvOK(TARG)) { | |
8d6d96c1 HS |
177 | if (llen >= 2 && lpv[llen - 2] == '1' && lpv[llen - 1] == '9' |
178 | && (llen == 2 || !isDIGIT(lpv[llen - 3]))) | |
179 | { | |
180 | Perl_warner(aTHX_ WARN_Y2K, "Possible Y2K bug: %s", | |
181 | "about to append an integer to '19'"); | |
182 | } | |
fd15e783 PN |
183 | } |
184 | #endif | |
185 | ||
8d6d96c1 HS |
186 | if (lbyte != rbyte) { |
187 | if (lbyte) | |
188 | sv_utf8_upgrade_nomg(TARG); | |
189 | else { | |
190 | sv_utf8_upgrade_nomg(right); | |
191 | rpv = SvPV(right, rlen); | |
69b47968 | 192 | } |
a0d0e21e | 193 | } |
8d6d96c1 | 194 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 195 | |
a0d0e21e LW |
196 | SETTARG; |
197 | RETURN; | |
748a9306 | 198 | } |
a0d0e21e LW |
199 | } |
200 | ||
201 | PP(pp_padsv) | |
202 | { | |
39644a26 | 203 | dSP; dTARGET; |
a0d0e21e | 204 | XPUSHs(TARG); |
533c011a NIS |
205 | if (PL_op->op_flags & OPf_MOD) { |
206 | if (PL_op->op_private & OPpLVAL_INTRO) | |
207 | SAVECLEARSV(PL_curpad[PL_op->op_targ]); | |
208 | else if (PL_op->op_private & OPpDEREF) { | |
8ec5e241 | 209 | PUTBACK; |
533c011a | 210 | vivify_ref(PL_curpad[PL_op->op_targ], PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
211 | SPAGAIN; |
212 | } | |
4633a7c4 | 213 | } |
a0d0e21e LW |
214 | RETURN; |
215 | } | |
216 | ||
217 | PP(pp_readline) | |
218 | { | |
f5284f61 | 219 | tryAMAGICunTARGET(iter, 0); |
3280af22 | 220 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 | 221 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f | 222 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 | 223 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 | 224 | else { |
f5284f61 IZ |
225 | dSP; |
226 | XPUSHs((SV*)PL_last_in_gv); | |
227 | PUTBACK; | |
cea2e8a9 | 228 | pp_rv2gv(); |
f5284f61 | 229 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 IZ |
230 | } |
231 | } | |
a0d0e21e LW |
232 | return do_readline(); |
233 | } | |
234 | ||
235 | PP(pp_eq) | |
236 | { | |
39644a26 | 237 | dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f AS |
238 | #ifndef NV_PRESERVES_UV |
239 | if (SvROK(TOPs) && SvROK(TOPm1s)) { | |
240 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPm1s))); | |
241 | RETURN; | |
242 | } | |
243 | #endif | |
28e5dec8 JH |
244 | #ifdef PERL_PRESERVE_IVUV |
245 | SvIV_please(TOPs); | |
246 | if (SvIOK(TOPs)) { | |
4c9fe80f AS |
247 | /* Unless the left argument is integer in range we are going |
248 | to have to use NV maths. Hence only attempt to coerce the | |
249 | right argument if we know the left is integer. */ | |
28e5dec8 JH |
250 | SvIV_please(TOPm1s); |
251 | if (SvIOK(TOPm1s)) { | |
252 | bool auvok = SvUOK(TOPm1s); | |
253 | bool buvok = SvUOK(TOPs); | |
a12c0f56 | 254 | |
28e5dec8 JH |
255 | if (!auvok && !buvok) { /* ## IV == IV ## */ |
256 | IV aiv = SvIVX(TOPm1s); | |
257 | IV biv = SvIVX(TOPs); | |
258 | ||
259 | SP--; | |
260 | SETs(boolSV(aiv == biv)); | |
261 | RETURN; | |
262 | } | |
263 | if (auvok && buvok) { /* ## UV == UV ## */ | |
264 | UV auv = SvUVX(TOPm1s); | |
265 | UV buv = SvUVX(TOPs); | |
266 | ||
267 | SP--; | |
268 | SETs(boolSV(auv == buv)); | |
269 | RETURN; | |
270 | } | |
271 | { /* ## Mixed IV,UV ## */ | |
272 | IV iv; | |
273 | UV uv; | |
274 | ||
275 | /* == is commutative so swap if needed (save code) */ | |
276 | if (auvok) { | |
277 | /* swap. top of stack (b) is the iv */ | |
278 | iv = SvIVX(TOPs); | |
279 | SP--; | |
280 | if (iv < 0) { | |
281 | /* As (a) is a UV, it's >0, so it cannot be == */ | |
282 | SETs(&PL_sv_no); | |
283 | RETURN; | |
284 | } | |
285 | uv = SvUVX(TOPs); | |
286 | } else { | |
287 | iv = SvIVX(TOPm1s); | |
288 | SP--; | |
289 | if (iv < 0) { | |
290 | /* As (b) is a UV, it's >0, so it cannot be == */ | |
291 | SETs(&PL_sv_no); | |
292 | RETURN; | |
293 | } | |
294 | uv = SvUVX(*(SP+1)); /* Do I want TOPp1s() ? */ | |
295 | } | |
296 | /* we know iv is >= 0 */ | |
28e5dec8 JH |
297 | SETs(boolSV((UV)iv == uv)); |
298 | RETURN; | |
299 | } | |
300 | } | |
301 | } | |
302 | #endif | |
a0d0e21e LW |
303 | { |
304 | dPOPnv; | |
54310121 | 305 | SETs(boolSV(TOPn == value)); |
a0d0e21e LW |
306 | RETURN; |
307 | } | |
308 | } | |
309 | ||
310 | PP(pp_preinc) | |
311 | { | |
39644a26 | 312 | dSP; |
68dc0745 | 313 | if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV) |
d470f89e | 314 | DIE(aTHX_ PL_no_modify); |
25da4f38 | 315 | if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) && |
55497cff | 316 | SvIVX(TOPs) != IV_MAX) |
317 | { | |
748a9306 | 318 | ++SvIVX(TOPs); |
55497cff | 319 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 320 | } |
28e5dec8 | 321 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 | 322 | sv_inc(TOPs); |
a0d0e21e LW |
323 | SvSETMAGIC(TOPs); |
324 | return NORMAL; | |
325 | } | |
326 | ||
327 | PP(pp_or) | |
328 | { | |
39644a26 | 329 | dSP; |
a0d0e21e LW |
330 | if (SvTRUE(TOPs)) |
331 | RETURN; | |
332 | else { | |
333 | --SP; | |
334 | RETURNOP(cLOGOP->op_other); | |
335 | } | |
336 | } | |
337 | ||
338 | PP(pp_add) | |
339 | { | |
39644a26 | 340 | dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 JH |
341 | useleft = USE_LEFT(TOPm1s); |
342 | #ifdef PERL_PRESERVE_IVUV | |
343 | /* We must see if we can perform the addition with integers if possible, | |
344 | as the integer code detects overflow while the NV code doesn't. | |
345 | If either argument hasn't had a numeric conversion yet attempt to get | |
346 | the IV. It's important to do this now, rather than just assuming that | |
347 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
348 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
349 | integer in case the second argument is IV=9223372036854775806 | |
350 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
351 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
352 | ||
353 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
354 | fp maths for integer values. |
355 | ||
a00b5bd3 | 356 | How to detect overflow? |
7dca457a NC |
357 | |
358 | C 99 section 6.2.6.1 says | |
359 | ||
360 | The range of nonnegative values of a signed integer type is a subrange | |
361 | of the corresponding unsigned integer type, and the representation of | |
362 | the same value in each type is the same. A computation involving | |
363 | unsigned operands can never overflow, because a result that cannot be | |
364 | represented by the resulting unsigned integer type is reduced modulo | |
365 | the number that is one greater than the largest value that can be | |
366 | represented by the resulting type. | |
367 | ||
368 | (the 9th paragraph) | |
369 | ||
370 | which I read as "unsigned ints wrap." | |
371 | ||
372 | signed integer overflow seems to be classed as "exception condition" | |
373 | ||
374 | If an exceptional condition occurs during the evaluation of an | |
375 | expression (that is, if the result is not mathematically defined or not | |
376 | in the range of representable values for its type), the behavior is | |
377 | undefined. | |
378 | ||
379 | (6.5, the 5th paragraph) | |
380 | ||
381 | I had assumed that on 2s complement machines signed arithmetic would | |
382 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
383 | everything perl builds on would be happy. After much wailing and | |
384 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
385 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
386 | unsigned code below is actually shorter than the old code. :-) | |
387 | */ | |
388 | ||
28e5dec8 JH |
389 | SvIV_please(TOPs); |
390 | if (SvIOK(TOPs)) { | |
391 | /* Unless the left argument is integer in range we are going to have to | |
392 | use NV maths. Hence only attempt to coerce the right argument if | |
393 | we know the left is integer. */ | |
9c5ffd7c JH |
394 | register UV auv = 0; |
395 | bool auvok = FALSE; | |
7dca457a NC |
396 | bool a_valid = 0; |
397 | ||
28e5dec8 | 398 | if (!useleft) { |
7dca457a NC |
399 | auv = 0; |
400 | a_valid = auvok = 1; | |
401 | /* left operand is undef, treat as zero. + 0 is identity, | |
402 | Could SETi or SETu right now, but space optimise by not adding | |
403 | lots of code to speed up what is probably a rarish case. */ | |
404 | } else { | |
405 | /* Left operand is defined, so is it IV? */ | |
406 | SvIV_please(TOPm1s); | |
407 | if (SvIOK(TOPm1s)) { | |
408 | if ((auvok = SvUOK(TOPm1s))) | |
409 | auv = SvUVX(TOPm1s); | |
410 | else { | |
411 | register IV aiv = SvIVX(TOPm1s); | |
412 | if (aiv >= 0) { | |
413 | auv = aiv; | |
414 | auvok = 1; /* Now acting as a sign flag. */ | |
415 | } else { /* 2s complement assumption for IV_MIN */ | |
416 | auv = (UV)-aiv; | |
417 | } | |
418 | } | |
419 | a_valid = 1; | |
28e5dec8 JH |
420 | } |
421 | } | |
7dca457a NC |
422 | if (a_valid) { |
423 | bool result_good = 0; | |
424 | UV result; | |
425 | register UV buv; | |
28e5dec8 | 426 | bool buvok = SvUOK(TOPs); |
a00b5bd3 | 427 | |
7dca457a NC |
428 | if (buvok) |
429 | buv = SvUVX(TOPs); | |
430 | else { | |
431 | register IV biv = SvIVX(TOPs); | |
432 | if (biv >= 0) { | |
433 | buv = biv; | |
434 | buvok = 1; | |
435 | } else | |
436 | buv = (UV)-biv; | |
437 | } | |
438 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
439 | else "IV" now, independant of how it came in. | |
440 | if a, b represents positive, A, B negative, a maps to -A etc | |
441 | a + b => (a + b) | |
442 | A + b => -(a - b) | |
443 | a + B => (a - b) | |
444 | A + B => -(a + b) | |
445 | all UV maths. negate result if A negative. | |
446 | add if signs same, subtract if signs differ. */ | |
447 | ||
448 | if (auvok ^ buvok) { | |
449 | /* Signs differ. */ | |
450 | if (auv >= buv) { | |
451 | result = auv - buv; | |
452 | /* Must get smaller */ | |
453 | if (result <= auv) | |
454 | result_good = 1; | |
455 | } else { | |
456 | result = buv - auv; | |
457 | if (result <= buv) { | |
458 | /* result really should be -(auv-buv). as its negation | |
459 | of true value, need to swap our result flag */ | |
460 | auvok = !auvok; | |
461 | result_good = 1; | |
28e5dec8 JH |
462 | } |
463 | } | |
7dca457a NC |
464 | } else { |
465 | /* Signs same */ | |
466 | result = auv + buv; | |
467 | if (result >= auv) | |
468 | result_good = 1; | |
469 | } | |
470 | if (result_good) { | |
471 | SP--; | |
472 | if (auvok) | |
28e5dec8 | 473 | SETu( result ); |
7dca457a NC |
474 | else { |
475 | /* Negate result */ | |
476 | if (result <= (UV)IV_MIN) | |
477 | SETi( -(IV)result ); | |
478 | else { | |
479 | /* result valid, but out of range for IV. */ | |
480 | SETn( -(NV)result ); | |
28e5dec8 JH |
481 | } |
482 | } | |
7dca457a NC |
483 | RETURN; |
484 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
485 | } |
486 | } | |
487 | #endif | |
a0d0e21e | 488 | { |
28e5dec8 JH |
489 | dPOPnv; |
490 | if (!useleft) { | |
491 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
492 | SETn(value); | |
493 | RETURN; | |
494 | } | |
495 | SETn( value + TOPn ); | |
496 | RETURN; | |
a0d0e21e LW |
497 | } |
498 | } | |
499 | ||
500 | PP(pp_aelemfast) | |
501 | { | |
39644a26 | 502 | dSP; |
1d7c1841 | 503 | AV *av = GvAV(cGVOP_gv); |
533c011a NIS |
504 | U32 lval = PL_op->op_flags & OPf_MOD; |
505 | SV** svp = av_fetch(av, PL_op->op_private, lval); | |
3280af22 | 506 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 507 | EXTEND(SP, 1); |
be6c24e0 GS |
508 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
509 | sv = sv_mortalcopy(sv); | |
510 | PUSHs(sv); | |
a0d0e21e LW |
511 | RETURN; |
512 | } | |
513 | ||
514 | PP(pp_join) | |
515 | { | |
39644a26 | 516 | dSP; dMARK; dTARGET; |
a0d0e21e LW |
517 | MARK++; |
518 | do_join(TARG, *MARK, MARK, SP); | |
519 | SP = MARK; | |
520 | SETs(TARG); | |
521 | RETURN; | |
522 | } | |
523 | ||
524 | PP(pp_pushre) | |
525 | { | |
39644a26 | 526 | dSP; |
44a8e56a | 527 | #ifdef DEBUGGING |
528 | /* | |
529 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
530 | * will be enough to hold an OP*. | |
531 | */ | |
532 | SV* sv = sv_newmortal(); | |
533 | sv_upgrade(sv, SVt_PVLV); | |
534 | LvTYPE(sv) = '/'; | |
533c011a | 535 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 536 | XPUSHs(sv); |
537 | #else | |
6b88bc9c | 538 | XPUSHs((SV*)PL_op); |
44a8e56a | 539 | #endif |
a0d0e21e LW |
540 | RETURN; |
541 | } | |
542 | ||
543 | /* Oversized hot code. */ | |
544 | ||
545 | PP(pp_print) | |
546 | { | |
39644a26 | 547 | dSP; dMARK; dORIGMARK; |
a0d0e21e LW |
548 | GV *gv; |
549 | IO *io; | |
760ac839 | 550 | register PerlIO *fp; |
236988e4 | 551 | MAGIC *mg; |
a0d0e21e | 552 | |
533c011a | 553 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
554 | gv = (GV*)*++MARK; |
555 | else | |
3280af22 | 556 | gv = PL_defoutgv; |
5b468f54 AMS |
557 | |
558 | if (gv && (io = GvIO(gv)) | |
559 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
560 | { | |
01bb7c6d | 561 | had_magic: |
68dc0745 | 562 | if (MARK == ORIGMARK) { |
1c846c1f | 563 | /* If using default handle then we need to make space to |
a60c0954 NIS |
564 | * pass object as 1st arg, so move other args up ... |
565 | */ | |
4352c267 | 566 | MEXTEND(SP, 1); |
68dc0745 | 567 | ++MARK; |
568 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
569 | ++SP; | |
570 | } | |
571 | PUSHMARK(MARK - 1); | |
5b468f54 | 572 | *MARK = SvTIED_obj((SV*)io, mg); |
68dc0745 | 573 | PUTBACK; |
236988e4 | 574 | ENTER; |
864dbfa3 | 575 | call_method("PRINT", G_SCALAR); |
236988e4 | 576 | LEAVE; |
577 | SPAGAIN; | |
68dc0745 | 578 | MARK = ORIGMARK + 1; |
579 | *MARK = *SP; | |
580 | SP = MARK; | |
236988e4 | 581 | RETURN; |
582 | } | |
a0d0e21e | 583 | if (!(io = GvIO(gv))) { |
5b468f54 AMS |
584 | if ((GvEGV(gv)) && (io = GvIO(GvEGV(gv))) |
585 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
01bb7c6d | 586 | goto had_magic; |
2dd78f96 JH |
587 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
588 | report_evil_fh(gv, io, PL_op->op_type); | |
91487cfc | 589 | SETERRNO(EBADF,RMS$_IFI); |
a0d0e21e LW |
590 | goto just_say_no; |
591 | } | |
592 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 593 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 NC |
594 | if (IoIFP(io)) |
595 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); | |
2dd78f96 | 596 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f | 597 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e | 598 | } |
91487cfc | 599 | SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI); |
a0d0e21e LW |
600 | goto just_say_no; |
601 | } | |
602 | else { | |
603 | MARK++; | |
7889fe52 | 604 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e LW |
605 | while (MARK <= SP) { |
606 | if (!do_print(*MARK, fp)) | |
607 | break; | |
608 | MARK++; | |
609 | if (MARK <= SP) { | |
7889fe52 | 610 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e LW |
611 | MARK--; |
612 | break; | |
613 | } | |
614 | } | |
615 | } | |
616 | } | |
617 | else { | |
618 | while (MARK <= SP) { | |
619 | if (!do_print(*MARK, fp)) | |
620 | break; | |
621 | MARK++; | |
622 | } | |
623 | } | |
624 | if (MARK <= SP) | |
625 | goto just_say_no; | |
626 | else { | |
7889fe52 NIS |
627 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
628 | if (!do_print(PL_ors_sv, fp)) /* $\ */ | |
a0d0e21e LW |
629 | goto just_say_no; |
630 | ||
631 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 632 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
633 | goto just_say_no; |
634 | } | |
635 | } | |
636 | SP = ORIGMARK; | |
3280af22 | 637 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
638 | RETURN; |
639 | ||
640 | just_say_no: | |
641 | SP = ORIGMARK; | |
3280af22 | 642 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
643 | RETURN; |
644 | } | |
645 | ||
646 | PP(pp_rv2av) | |
647 | { | |
39644a26 | 648 | dSP; dTOPss; |
a0d0e21e LW |
649 | AV *av; |
650 | ||
651 | if (SvROK(sv)) { | |
652 | wasref: | |
f5284f61 IZ |
653 | tryAMAGICunDEREF(to_av); |
654 | ||
a0d0e21e LW |
655 | av = (AV*)SvRV(sv); |
656 | if (SvTYPE(av) != SVt_PVAV) | |
cea2e8a9 | 657 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a | 658 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 659 | SETs((SV*)av); |
a0d0e21e LW |
660 | RETURN; |
661 | } | |
78f9721b SM |
662 | else if (LVRET) { |
663 | if (GIMME == G_SCALAR) | |
664 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); | |
665 | SETs((SV*)av); | |
666 | RETURN; | |
667 | } | |
a0d0e21e LW |
668 | } |
669 | else { | |
670 | if (SvTYPE(sv) == SVt_PVAV) { | |
671 | av = (AV*)sv; | |
533c011a | 672 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 673 | SETs((SV*)av); |
a0d0e21e LW |
674 | RETURN; |
675 | } | |
78f9721b SM |
676 | else if (LVRET) { |
677 | if (GIMME == G_SCALAR) | |
678 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
679 | " scalar context"); | |
680 | SETs((SV*)av); | |
681 | RETURN; | |
682 | } | |
a0d0e21e LW |
683 | } |
684 | else { | |
67955e0c | 685 | GV *gv; |
1c846c1f | 686 | |
a0d0e21e | 687 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 688 | char *sym; |
c9d5ac95 | 689 | STRLEN len; |
748a9306 | 690 | |
a0d0e21e LW |
691 | if (SvGMAGICAL(sv)) { |
692 | mg_get(sv); | |
693 | if (SvROK(sv)) | |
694 | goto wasref; | |
695 | } | |
696 | if (!SvOK(sv)) { | |
533c011a NIS |
697 | if (PL_op->op_flags & OPf_REF || |
698 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 699 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 | 700 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 701 | report_uninit(); |
f5284f61 | 702 | if (GIMME == G_ARRAY) { |
c2444246 | 703 | (void)POPs; |
4633a7c4 | 704 | RETURN; |
f5284f61 IZ |
705 | } |
706 | RETSETUNDEF; | |
a0d0e21e | 707 | } |
c9d5ac95 | 708 | sym = SvPV(sv,len); |
35cd451c GS |
709 | if ((PL_op->op_flags & OPf_SPECIAL) && |
710 | !(PL_op->op_flags & OPf_MOD)) | |
711 | { | |
712 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV); | |
c9d5ac95 GS |
713 | if (!gv |
714 | && (!is_gv_magical(sym,len,0) | |
715 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV)))) | |
716 | { | |
35cd451c | 717 | RETSETUNDEF; |
c9d5ac95 | 718 | } |
35cd451c GS |
719 | } |
720 | else { | |
721 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 722 | DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); |
35cd451c GS |
723 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
724 | } | |
725 | } | |
726 | else { | |
67955e0c | 727 | gv = (GV*)sv; |
a0d0e21e | 728 | } |
67955e0c | 729 | av = GvAVn(gv); |
533c011a | 730 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 731 | av = save_ary(gv); |
533c011a | 732 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 733 | SETs((SV*)av); |
a0d0e21e LW |
734 | RETURN; |
735 | } | |
78f9721b SM |
736 | else if (LVRET) { |
737 | if (GIMME == G_SCALAR) | |
738 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
739 | " scalar context"); | |
740 | SETs((SV*)av); | |
741 | RETURN; | |
742 | } | |
a0d0e21e LW |
743 | } |
744 | } | |
745 | ||
746 | if (GIMME == G_ARRAY) { | |
747 | I32 maxarg = AvFILL(av) + 1; | |
c2444246 | 748 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f | 749 | EXTEND(SP, maxarg); |
93965878 | 750 | if (SvRMAGICAL(av)) { |
1c846c1f | 751 | U32 i; |
93965878 NIS |
752 | for (i=0; i < maxarg; i++) { |
753 | SV **svp = av_fetch(av, i, FALSE); | |
3280af22 | 754 | SP[i+1] = (svp) ? *svp : &PL_sv_undef; |
93965878 | 755 | } |
1c846c1f | 756 | } |
93965878 NIS |
757 | else { |
758 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
759 | } | |
a0d0e21e LW |
760 | SP += maxarg; |
761 | } | |
762 | else { | |
763 | dTARGET; | |
764 | I32 maxarg = AvFILL(av) + 1; | |
f5284f61 | 765 | SETi(maxarg); |
a0d0e21e LW |
766 | } |
767 | RETURN; | |
768 | } | |
769 | ||
770 | PP(pp_rv2hv) | |
771 | { | |
39644a26 | 772 | dSP; dTOPss; |
a0d0e21e LW |
773 | HV *hv; |
774 | ||
775 | if (SvROK(sv)) { | |
776 | wasref: | |
f5284f61 IZ |
777 | tryAMAGICunDEREF(to_hv); |
778 | ||
a0d0e21e | 779 | hv = (HV*)SvRV(sv); |
c750a3ec | 780 | if (SvTYPE(hv) != SVt_PVHV && SvTYPE(hv) != SVt_PVAV) |
cea2e8a9 | 781 | DIE(aTHX_ "Not a HASH reference"); |
533c011a | 782 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
783 | SETs((SV*)hv); |
784 | RETURN; | |
785 | } | |
78f9721b SM |
786 | else if (LVRET) { |
787 | if (GIMME == G_SCALAR) | |
788 | Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); | |
789 | SETs((SV*)hv); | |
790 | RETURN; | |
791 | } | |
a0d0e21e LW |
792 | } |
793 | else { | |
c750a3ec | 794 | if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) { |
a0d0e21e | 795 | hv = (HV*)sv; |
533c011a | 796 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
797 | SETs((SV*)hv); |
798 | RETURN; | |
799 | } | |
78f9721b SM |
800 | else if (LVRET) { |
801 | if (GIMME == G_SCALAR) | |
802 | Perl_croak(aTHX_ "Can't return hash to lvalue" | |
803 | " scalar context"); | |
804 | SETs((SV*)hv); | |
805 | RETURN; | |
806 | } | |
a0d0e21e LW |
807 | } |
808 | else { | |
67955e0c | 809 | GV *gv; |
1c846c1f | 810 | |
a0d0e21e | 811 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 812 | char *sym; |
c9d5ac95 | 813 | STRLEN len; |
748a9306 | 814 | |
a0d0e21e LW |
815 | if (SvGMAGICAL(sv)) { |
816 | mg_get(sv); | |
817 | if (SvROK(sv)) | |
818 | goto wasref; | |
819 | } | |
820 | if (!SvOK(sv)) { | |
533c011a NIS |
821 | if (PL_op->op_flags & OPf_REF || |
822 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 823 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 | 824 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 825 | report_uninit(); |
4633a7c4 LW |
826 | if (GIMME == G_ARRAY) { |
827 | SP--; | |
828 | RETURN; | |
829 | } | |
a0d0e21e LW |
830 | RETSETUNDEF; |
831 | } | |
c9d5ac95 | 832 | sym = SvPV(sv,len); |
35cd451c GS |
833 | if ((PL_op->op_flags & OPf_SPECIAL) && |
834 | !(PL_op->op_flags & OPf_MOD)) | |
835 | { | |
836 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV); | |
c9d5ac95 GS |
837 | if (!gv |
838 | && (!is_gv_magical(sym,len,0) | |
839 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV)))) | |
840 | { | |
35cd451c | 841 | RETSETUNDEF; |
c9d5ac95 | 842 | } |
35cd451c GS |
843 | } |
844 | else { | |
845 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 846 | DIE(aTHX_ PL_no_symref, sym, "a HASH"); |
35cd451c GS |
847 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
848 | } | |
849 | } | |
850 | else { | |
67955e0c | 851 | gv = (GV*)sv; |
a0d0e21e | 852 | } |
67955e0c | 853 | hv = GvHVn(gv); |
533c011a | 854 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 855 | hv = save_hash(gv); |
533c011a | 856 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
857 | SETs((SV*)hv); |
858 | RETURN; | |
859 | } | |
78f9721b SM |
860 | else if (LVRET) { |
861 | if (GIMME == G_SCALAR) | |
862 | Perl_croak(aTHX_ "Can't return hash to lvalue" | |
863 | " scalar context"); | |
864 | SETs((SV*)hv); | |
865 | RETURN; | |
866 | } | |
a0d0e21e LW |
867 | } |
868 | } | |
869 | ||
870 | if (GIMME == G_ARRAY) { /* array wanted */ | |
3280af22 | 871 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 | 872 | return do_kv(); |
a0d0e21e LW |
873 | } |
874 | else { | |
875 | dTARGET; | |
4b154ab5 GA |
876 | if (SvTYPE(hv) == SVt_PVAV) |
877 | hv = avhv_keys((AV*)hv); | |
b9c39e73 | 878 | if (HvFILL(hv)) |
57def98f JH |
879 | Perl_sv_setpvf(aTHX_ TARG, "%"IVdf"/%"IVdf, |
880 | (IV)HvFILL(hv), (IV)HvMAX(hv) + 1); | |
a0d0e21e LW |
881 | else |
882 | sv_setiv(TARG, 0); | |
c750a3ec | 883 | |
a0d0e21e LW |
884 | SETTARG; |
885 | RETURN; | |
886 | } | |
887 | } | |
888 | ||
10c8fecd GS |
889 | STATIC int |
890 | S_do_maybe_phash(pTHX_ AV *ary, SV **lelem, SV **firstlelem, SV **relem, | |
891 | SV **lastrelem) | |
892 | { | |
893 | OP *leftop; | |
10c8fecd GS |
894 | I32 i; |
895 | ||
896 | leftop = ((BINOP*)PL_op)->op_last; | |
897 | assert(leftop); | |
898 | assert(leftop->op_type == OP_NULL && leftop->op_targ == OP_LIST); | |
899 | leftop = ((LISTOP*)leftop)->op_first; | |
900 | assert(leftop); | |
901 | /* Skip PUSHMARK and each element already assigned to. */ | |
902 | for (i = lelem - firstlelem; i > 0; i--) { | |
903 | leftop = leftop->op_sibling; | |
904 | assert(leftop); | |
905 | } | |
906 | if (leftop->op_type != OP_RV2HV) | |
907 | return 0; | |
908 | ||
909 | /* pseudohash */ | |
910 | if (av_len(ary) > 0) | |
911 | av_fill(ary, 0); /* clear all but the fields hash */ | |
912 | if (lastrelem >= relem) { | |
913 | while (relem < lastrelem) { /* gobble up all the rest */ | |
914 | SV *tmpstr; | |
915 | assert(relem[0]); | |
916 | assert(relem[1]); | |
917 | /* Avoid a memory leak when avhv_store_ent dies. */ | |
918 | tmpstr = sv_newmortal(); | |
919 | sv_setsv(tmpstr,relem[1]); /* value */ | |
920 | relem[1] = tmpstr; | |
921 | if (avhv_store_ent(ary,relem[0],tmpstr,0)) | |
d16e9ed9 | 922 | (void)SvREFCNT_inc(tmpstr); |
10c8fecd GS |
923 | if (SvMAGICAL(ary) != 0 && SvSMAGICAL(tmpstr)) |
924 | mg_set(tmpstr); | |
925 | relem += 2; | |
926 | TAINT_NOT; | |
927 | } | |
928 | } | |
929 | if (relem == lastrelem) | |
930 | return 1; | |
931 | return 2; | |
932 | } | |
933 | ||
934 | STATIC void | |
935 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
936 | { | |
937 | if (*relem) { | |
938 | SV *tmpstr; | |
939 | if (ckWARN(WARN_MISC)) { | |
940 | if (relem == firstrelem && | |
941 | SvROK(*relem) && | |
942 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
943 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
944 | { | |
945 | Perl_warner(aTHX_ WARN_MISC, | |
946 | "Reference found where even-sized list expected"); | |
947 | } | |
948 | else | |
949 | Perl_warner(aTHX_ WARN_MISC, | |
950 | "Odd number of elements in hash assignment"); | |
951 | } | |
952 | if (SvTYPE(hash) == SVt_PVAV) { | |
953 | /* pseudohash */ | |
954 | tmpstr = sv_newmortal(); | |
955 | if (avhv_store_ent((AV*)hash,*relem,tmpstr,0)) | |
d16e9ed9 | 956 | (void)SvREFCNT_inc(tmpstr); |
10c8fecd GS |
957 | if (SvMAGICAL(hash) && SvSMAGICAL(tmpstr)) |
958 | mg_set(tmpstr); | |
959 | } | |
960 | else { | |
961 | HE *didstore; | |
962 | tmpstr = NEWSV(29,0); | |
963 | didstore = hv_store_ent(hash,*relem,tmpstr,0); | |
964 | if (SvMAGICAL(hash)) { | |
965 | if (SvSMAGICAL(tmpstr)) | |
966 | mg_set(tmpstr); | |
967 | if (!didstore) | |
968 | sv_2mortal(tmpstr); | |
969 | } | |
970 | } | |
971 | TAINT_NOT; | |
972 | } | |
973 | } | |
974 | ||
a0d0e21e LW |
975 | PP(pp_aassign) |
976 | { | |
39644a26 | 977 | dSP; |
3280af22 NIS |
978 | SV **lastlelem = PL_stack_sp; |
979 | SV **lastrelem = PL_stack_base + POPMARK; | |
980 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
981 | SV **firstlelem = lastrelem + 1; |
982 | ||
983 | register SV **relem; | |
984 | register SV **lelem; | |
985 | ||
986 | register SV *sv; | |
987 | register AV *ary; | |
988 | ||
54310121 | 989 | I32 gimme; |
a0d0e21e LW |
990 | HV *hash; |
991 | I32 i; | |
992 | int magic; | |
993 | ||
3280af22 | 994 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
a0d0e21e LW |
995 | |
996 | /* If there's a common identifier on both sides we have to take | |
997 | * special care that assigning the identifier on the left doesn't | |
998 | * clobber a value on the right that's used later in the list. | |
999 | */ | |
10c8fecd | 1000 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 | 1001 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd GS |
1002 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
1003 | /*SUPPRESS 560*/ | |
155aba94 | 1004 | if ((sv = *relem)) { |
a1f49e72 | 1005 | TAINT_NOT; /* Each item is independent */ |
10c8fecd | 1006 | *relem = sv_mortalcopy(sv); |
a1f49e72 | 1007 | } |
10c8fecd | 1008 | } |
a0d0e21e LW |
1009 | } |
1010 | ||
1011 | relem = firstrelem; | |
1012 | lelem = firstlelem; | |
1013 | ary = Null(AV*); | |
1014 | hash = Null(HV*); | |
10c8fecd | 1015 | |
a0d0e21e | 1016 | while (lelem <= lastlelem) { |
bbce6d69 | 1017 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
1018 | sv = *lelem++; |
1019 | switch (SvTYPE(sv)) { | |
1020 | case SVt_PVAV: | |
1021 | ary = (AV*)sv; | |
748a9306 | 1022 | magic = SvMAGICAL(ary) != 0; |
10c8fecd GS |
1023 | if (PL_op->op_private & OPpASSIGN_HASH) { |
1024 | switch (do_maybe_phash(ary, lelem, firstlelem, relem, | |
1025 | lastrelem)) | |
1026 | { | |
1027 | case 0: | |
1028 | goto normal_array; | |
1029 | case 1: | |
1030 | do_oddball((HV*)ary, relem, firstrelem); | |
1031 | } | |
1032 | relem = lastrelem + 1; | |
1033 | break; | |
1034 | } | |
1035 | normal_array: | |
a0d0e21e | 1036 | av_clear(ary); |
7e42bd57 | 1037 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1038 | i = 0; |
1039 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1040 | SV **didstore; |
a0d0e21e LW |
1041 | sv = NEWSV(28,0); |
1042 | assert(*relem); | |
1043 | sv_setsv(sv,*relem); | |
1044 | *(relem++) = sv; | |
5117ca91 GS |
1045 | didstore = av_store(ary,i++,sv); |
1046 | if (magic) { | |
fb73857a | 1047 | if (SvSMAGICAL(sv)) |
1048 | mg_set(sv); | |
5117ca91 | 1049 | if (!didstore) |
8127e0e3 | 1050 | sv_2mortal(sv); |
5117ca91 | 1051 | } |
bbce6d69 | 1052 | TAINT_NOT; |
a0d0e21e LW |
1053 | } |
1054 | break; | |
10c8fecd | 1055 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e LW |
1056 | SV *tmpstr; |
1057 | ||
1058 | hash = (HV*)sv; | |
748a9306 | 1059 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e LW |
1060 | hv_clear(hash); |
1061 | ||
1062 | while (relem < lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1063 | HE *didstore; |
4633a7c4 | 1064 | if (*relem) |
a0d0e21e | 1065 | sv = *(relem++); |
4633a7c4 | 1066 | else |
3280af22 | 1067 | sv = &PL_sv_no, relem++; |
a0d0e21e LW |
1068 | tmpstr = NEWSV(29,0); |
1069 | if (*relem) | |
1070 | sv_setsv(tmpstr,*relem); /* value */ | |
1071 | *(relem++) = tmpstr; | |
5117ca91 GS |
1072 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1073 | if (magic) { | |
fb73857a | 1074 | if (SvSMAGICAL(tmpstr)) |
1075 | mg_set(tmpstr); | |
5117ca91 | 1076 | if (!didstore) |
8127e0e3 | 1077 | sv_2mortal(tmpstr); |
5117ca91 | 1078 | } |
bbce6d69 | 1079 | TAINT_NOT; |
8e07c86e | 1080 | } |
6a0deba8 | 1081 | if (relem == lastrelem) { |
10c8fecd | 1082 | do_oddball(hash, relem, firstrelem); |
6a0deba8 | 1083 | relem++; |
1930e939 | 1084 | } |
a0d0e21e LW |
1085 | } |
1086 | break; | |
1087 | default: | |
6fc92669 GS |
1088 | if (SvIMMORTAL(sv)) { |
1089 | if (relem <= lastrelem) | |
1090 | relem++; | |
1091 | break; | |
a0d0e21e LW |
1092 | } |
1093 | if (relem <= lastrelem) { | |
1094 | sv_setsv(sv, *relem); | |
1095 | *(relem++) = sv; | |
1096 | } | |
1097 | else | |
3280af22 | 1098 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e LW |
1099 | SvSETMAGIC(sv); |
1100 | break; | |
1101 | } | |
1102 | } | |
3280af22 NIS |
1103 | if (PL_delaymagic & ~DM_DELAY) { |
1104 | if (PL_delaymagic & DM_UID) { | |
a0d0e21e | 1105 | #ifdef HAS_SETRESUID |
b28d0864 | 1106 | (void)setresuid(PL_uid,PL_euid,(Uid_t)-1); |
56febc5e AD |
1107 | #else |
1108 | # ifdef HAS_SETREUID | |
3280af22 | 1109 | (void)setreuid(PL_uid,PL_euid); |
56febc5e AD |
1110 | # else |
1111 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
1112 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1113 | (void)setruid(PL_uid); | |
1114 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 1115 | } |
56febc5e AD |
1116 | # endif /* HAS_SETRUID */ |
1117 | # ifdef HAS_SETEUID | |
b28d0864 NIS |
1118 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
1119 | (void)seteuid(PL_uid); | |
1120 | PL_delaymagic &= ~DM_EUID; | |
a0d0e21e | 1121 | } |
56febc5e | 1122 | # endif /* HAS_SETEUID */ |
b28d0864 NIS |
1123 | if (PL_delaymagic & DM_UID) { |
1124 | if (PL_uid != PL_euid) | |
cea2e8a9 | 1125 | DIE(aTHX_ "No setreuid available"); |
b28d0864 | 1126 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e | 1127 | } |
56febc5e AD |
1128 | # endif /* HAS_SETREUID */ |
1129 | #endif /* HAS_SETRESUID */ | |
d8eceb89 JH |
1130 | PL_uid = PerlProc_getuid(); |
1131 | PL_euid = PerlProc_geteuid(); | |
a0d0e21e | 1132 | } |
3280af22 | 1133 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1134 | #ifdef HAS_SETRESGID |
b28d0864 | 1135 | (void)setresgid(PL_gid,PL_egid,(Gid_t)-1); |
56febc5e AD |
1136 | #else |
1137 | # ifdef HAS_SETREGID | |
3280af22 | 1138 | (void)setregid(PL_gid,PL_egid); |
56febc5e AD |
1139 | # else |
1140 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
1141 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1142 | (void)setrgid(PL_gid); | |
1143 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 1144 | } |
56febc5e AD |
1145 | # endif /* HAS_SETRGID */ |
1146 | # ifdef HAS_SETEGID | |
b28d0864 NIS |
1147 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
1148 | (void)setegid(PL_gid); | |
1149 | PL_delaymagic &= ~DM_EGID; | |
a0d0e21e | 1150 | } |
56febc5e | 1151 | # endif /* HAS_SETEGID */ |
b28d0864 NIS |
1152 | if (PL_delaymagic & DM_GID) { |
1153 | if (PL_gid != PL_egid) | |
cea2e8a9 | 1154 | DIE(aTHX_ "No setregid available"); |
b28d0864 | 1155 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e | 1156 | } |
56febc5e AD |
1157 | # endif /* HAS_SETREGID */ |
1158 | #endif /* HAS_SETRESGID */ | |
d8eceb89 JH |
1159 | PL_gid = PerlProc_getgid(); |
1160 | PL_egid = PerlProc_getegid(); | |
a0d0e21e | 1161 | } |
3280af22 | 1162 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e | 1163 | } |
3280af22 | 1164 | PL_delaymagic = 0; |
54310121 | 1165 | |
1166 | gimme = GIMME_V; | |
1167 | if (gimme == G_VOID) | |
1168 | SP = firstrelem - 1; | |
1169 | else if (gimme == G_SCALAR) { | |
1170 | dTARGET; | |
1171 | SP = firstrelem; | |
1172 | SETi(lastrelem - firstrelem + 1); | |
1173 | } | |
1174 | else { | |
a0d0e21e LW |
1175 | if (ary || hash) |
1176 | SP = lastrelem; | |
1177 | else | |
1178 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 1179 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 1180 | while (relem <= SP) |
3280af22 | 1181 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 1182 | } |
54310121 | 1183 | RETURN; |
a0d0e21e LW |
1184 | } |
1185 | ||
8782bef2 GB |
1186 | PP(pp_qr) |
1187 | { | |
39644a26 | 1188 | dSP; |
8782bef2 GB |
1189 | register PMOP *pm = cPMOP; |
1190 | SV *rv = sv_newmortal(); | |
57668c4d | 1191 | SV *sv = newSVrv(rv, "Regexp"); |
e08e52cf AMS |
1192 | if (pm->op_pmdynflags & PMdf_TAINTED) |
1193 | SvTAINTED_on(rv); | |
aaa362c4 | 1194 | sv_magic(sv,(SV*)ReREFCNT_inc(PM_GETRE(pm)), PERL_MAGIC_qr,0,0); |
8782bef2 GB |
1195 | RETURNX(PUSHs(rv)); |
1196 | } | |
1197 | ||
a0d0e21e LW |
1198 | PP(pp_match) |
1199 | { | |
39644a26 | 1200 | dSP; dTARG; |
a0d0e21e LW |
1201 | register PMOP *pm = cPMOP; |
1202 | register char *t; | |
1203 | register char *s; | |
1204 | char *strend; | |
1205 | I32 global; | |
f722798b IZ |
1206 | I32 r_flags = REXEC_CHECKED; |
1207 | char *truebase; /* Start of string */ | |
aaa362c4 | 1208 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1209 | bool rxtainted; |
a0d0e21e LW |
1210 | I32 gimme = GIMME; |
1211 | STRLEN len; | |
748a9306 | 1212 | I32 minmatch = 0; |
3280af22 | 1213 | I32 oldsave = PL_savestack_ix; |
f86702cc | 1214 | I32 update_minmatch = 1; |
e60df1fa | 1215 | I32 had_zerolen = 0; |
a0d0e21e | 1216 | |
533c011a | 1217 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
1218 | TARG = POPs; |
1219 | else { | |
54b9620d | 1220 | TARG = DEFSV; |
a0d0e21e LW |
1221 | EXTEND(SP,1); |
1222 | } | |
d9f424b2 | 1223 | |
c277df42 | 1224 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e LW |
1225 | s = SvPV(TARG, len); |
1226 | strend = s + len; | |
1227 | if (!s) | |
2269b42e | 1228 | DIE(aTHX_ "panic: pp_match"); |
b3eb6a9b | 1229 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 | 1230 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 1231 | TAINT_NOT; |
a0d0e21e | 1232 | |
53c4c00c | 1233 | PL_reg_match_utf8 = DO_UTF8(TARG); |
d9f424b2 | 1234 | |
48c036b1 | 1235 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 | 1236 | failure: |
a0d0e21e LW |
1237 | if (gimme == G_ARRAY) |
1238 | RETURN; | |
1239 | RETPUSHNO; | |
1240 | } | |
1241 | ||
3280af22 NIS |
1242 | if (!rx->prelen && PL_curpm) { |
1243 | pm = PL_curpm; | |
aaa362c4 | 1244 | rx = PM_GETRE(pm); |
a0d0e21e | 1245 | } |
d9f97599 | 1246 | if (rx->minlen > len) goto failure; |
c277df42 | 1247 | |
a0d0e21e | 1248 | truebase = t = s; |
ad94a511 IZ |
1249 | |
1250 | /* XXXX What part of this is needed with true \G-support? */ | |
155aba94 | 1251 | if ((global = pm->op_pmflags & PMf_GLOBAL)) { |
cf93c79d | 1252 | rx->startp[0] = -1; |
a0d0e21e | 1253 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 | 1254 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 | 1255 | if (mg && mg->mg_len >= 0) { |
b7a35066 | 1256 | if (!(rx->reganch & ROPT_GPOS_SEEN)) |
1c846c1f | 1257 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e HS |
1258 | else if (rx->reganch & ROPT_ANCH_GPOS) { |
1259 | r_flags |= REXEC_IGNOREPOS; | |
1c846c1f | 1260 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e | 1261 | } |
748a9306 | 1262 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc | 1263 | update_minmatch = 0; |
748a9306 | 1264 | } |
a0d0e21e LW |
1265 | } |
1266 | } | |
a759488c | 1267 | r_flags |= REXEC_COPY_STR; |
1c846c1f | 1268 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
1269 | r_flags |= REXEC_SCREAM; |
1270 | ||
a0d0e21e | 1271 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 NIS |
1272 | SAVEINT(PL_multiline); |
1273 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
1274 | } |
1275 | ||
1276 | play_it_again: | |
cf93c79d IZ |
1277 | if (global && rx->startp[0] != -1) { |
1278 | t = s = rx->endp[0] + truebase; | |
d9f97599 | 1279 | if ((s + rx->minlen) > strend) |
a0d0e21e | 1280 | goto nope; |
f86702cc | 1281 | if (update_minmatch++) |
e60df1fa | 1282 | minmatch = had_zerolen; |
a0d0e21e | 1283 | } |
60aeb6fd NIS |
1284 | if (rx->reganch & RE_USE_INTUIT && |
1285 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { | |
ee0b7718 | 1286 | PL_bostr = truebase; |
f722798b IZ |
1287 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1288 | ||
1289 | if (!s) | |
1290 | goto nope; | |
1291 | if ( (rx->reganch & ROPT_CHECK_ALL) | |
a759488c | 1292 | && !((rx->reganch & ROPT_SEOL_SEEN) && PL_multiline) |
f722798b IZ |
1293 | && ((rx->reganch & ROPT_NOSCAN) |
1294 | || !((rx->reganch & RE_INTUIT_TAIL) | |
05b4157f GS |
1295 | && (r_flags & REXEC_SCREAM))) |
1296 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
f722798b | 1297 | goto yup; |
a0d0e21e | 1298 | } |
cea2e8a9 | 1299 | if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 | 1300 | { |
3280af22 | 1301 | PL_curpm = pm; |
a0d0e21e | 1302 | if (pm->op_pmflags & PMf_ONCE) |
48c036b1 | 1303 | pm->op_pmdynflags |= PMdf_USED; |
a0d0e21e LW |
1304 | goto gotcha; |
1305 | } | |
1306 | else | |
1307 | goto ret_no; | |
1308 | /*NOTREACHED*/ | |
1309 | ||
1310 | gotcha: | |
72311751 GS |
1311 | if (rxtainted) |
1312 | RX_MATCH_TAINTED_on(rx); | |
1313 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1314 | if (gimme == G_ARRAY) { |
ffc61ed2 | 1315 | I32 nparens, i, len; |
a0d0e21e | 1316 | |
ffc61ed2 JH |
1317 | nparens = rx->nparens; |
1318 | if (global && !nparens) | |
a0d0e21e LW |
1319 | i = 1; |
1320 | else | |
1321 | i = 0; | |
c277df42 | 1322 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1323 | EXTEND(SP, nparens + i); |
1324 | EXTEND_MORTAL(nparens + i); | |
1325 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e LW |
1326 | PUSHs(sv_newmortal()); |
1327 | /*SUPPRESS 560*/ | |
cf93c79d IZ |
1328 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
1329 | len = rx->endp[i] - rx->startp[i]; | |
1330 | s = rx->startp[i] + truebase; | |
a0d0e21e | 1331 | sv_setpvn(*SP, s, len); |
cce850e4 | 1332 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1333 | SvUTF8_on(*SP); |
a0d0e21e LW |
1334 | } |
1335 | } | |
1336 | if (global) { | |
0af80b60 HS |
1337 | if (pm->op_pmflags & PMf_CONTINUE) { |
1338 | MAGIC* mg = 0; | |
1339 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
1340 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1341 | if (!mg) { | |
1342 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); | |
1343 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1344 | } | |
1345 | if (rx->startp[0] != -1) { | |
1346 | mg->mg_len = rx->endp[0]; | |
1347 | if (rx->startp[0] == rx->endp[0]) | |
1348 | mg->mg_flags |= MGf_MINMATCH; | |
1349 | else | |
1350 | mg->mg_flags &= ~MGf_MINMATCH; | |
1351 | } | |
1352 | } | |
cf93c79d IZ |
1353 | had_zerolen = (rx->startp[0] != -1 |
1354 | && rx->startp[0] == rx->endp[0]); | |
c277df42 | 1355 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1356 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1357 | goto play_it_again; |
1358 | } | |
ffc61ed2 | 1359 | else if (!nparens) |
bde848c5 | 1360 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1361 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1362 | RETURN; |
1363 | } | |
1364 | else { | |
1365 | if (global) { | |
1366 | MAGIC* mg = 0; | |
1367 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
14befaf4 | 1368 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1369 | if (!mg) { |
14befaf4 DM |
1370 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1371 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
a0d0e21e | 1372 | } |
cf93c79d IZ |
1373 | if (rx->startp[0] != -1) { |
1374 | mg->mg_len = rx->endp[0]; | |
d9f97599 | 1375 | if (rx->startp[0] == rx->endp[0]) |
748a9306 LW |
1376 | mg->mg_flags |= MGf_MINMATCH; |
1377 | else | |
1378 | mg->mg_flags &= ~MGf_MINMATCH; | |
1379 | } | |
a0d0e21e | 1380 | } |
4633a7c4 | 1381 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1382 | RETPUSHYES; |
1383 | } | |
1384 | ||
f722798b | 1385 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1386 | if (rxtainted) |
1387 | RX_MATCH_TAINTED_on(rx); | |
1388 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1389 | PL_curpm = pm; |
a0d0e21e | 1390 | if (pm->op_pmflags & PMf_ONCE) |
48c036b1 | 1391 | pm->op_pmdynflags |= PMdf_USED; |
cf93c79d IZ |
1392 | if (RX_MATCH_COPIED(rx)) |
1393 | Safefree(rx->subbeg); | |
1394 | RX_MATCH_COPIED_off(rx); | |
1395 | rx->subbeg = Nullch; | |
a0d0e21e | 1396 | if (global) { |
d9f97599 | 1397 | rx->subbeg = truebase; |
cf93c79d | 1398 | rx->startp[0] = s - truebase; |
53c4c00c | 1399 | if (PL_reg_match_utf8) { |
60aeb6fd NIS |
1400 | char *t = (char*)utf8_hop((U8*)s, rx->minlen); |
1401 | rx->endp[0] = t - truebase; | |
1402 | } | |
1403 | else { | |
1404 | rx->endp[0] = s - truebase + rx->minlen; | |
1405 | } | |
cf93c79d | 1406 | rx->sublen = strend - truebase; |
a0d0e21e | 1407 | goto gotcha; |
1c846c1f | 1408 | } |
a759488c JP |
1409 | |
1410 | rx->sublen = strend - t; | |
1411 | rx->subbeg = savepvn(t, rx->sublen); | |
1412 | RX_MATCH_COPIED_on(rx); | |
1413 | rx->startp[0] = s - truebase; | |
1414 | rx->endp[0] = s - truebase + rx->minlen; | |
fc19f8d0 | 1415 | rx->nparens = rx->lastparen = 0; /* used by @- and @+ */ |
4633a7c4 | 1416 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1417 | RETPUSHYES; |
1418 | ||
1419 | nope: | |
a0d0e21e | 1420 | ret_no: |
c90c0ff4 | 1421 | if (global && !(pm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e | 1422 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 | 1423 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1424 | if (mg) |
565764a8 | 1425 | mg->mg_len = -1; |
a0d0e21e LW |
1426 | } |
1427 | } | |
4633a7c4 | 1428 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1429 | if (gimme == G_ARRAY) |
1430 | RETURN; | |
1431 | RETPUSHNO; | |
1432 | } | |
1433 | ||
1434 | OP * | |
864dbfa3 | 1435 | Perl_do_readline(pTHX) |
a0d0e21e LW |
1436 | { |
1437 | dSP; dTARGETSTACKED; | |
1438 | register SV *sv; | |
1439 | STRLEN tmplen = 0; | |
1440 | STRLEN offset; | |
760ac839 | 1441 | PerlIO *fp; |
3280af22 | 1442 | register IO *io = GvIO(PL_last_in_gv); |
533c011a | 1443 | register I32 type = PL_op->op_type; |
54310121 | 1444 | I32 gimme = GIMME_V; |
e79b0511 | 1445 | MAGIC *mg; |
a0d0e21e | 1446 | |
5b468f54 | 1447 | if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { |
e79b0511 | 1448 | PUSHMARK(SP); |
5b468f54 | 1449 | XPUSHs(SvTIED_obj((SV*)io, mg)); |
e79b0511 | 1450 | PUTBACK; |
1451 | ENTER; | |
864dbfa3 | 1452 | call_method("READLINE", gimme); |
e79b0511 | 1453 | LEAVE; |
1454 | SPAGAIN; | |
54310121 | 1455 | if (gimme == G_SCALAR) |
1456 | SvSetMagicSV_nosteal(TARG, TOPs); | |
e79b0511 | 1457 | RETURN; |
1458 | } | |
a0d0e21e LW |
1459 | fp = Nullfp; |
1460 | if (io) { | |
1461 | fp = IoIFP(io); | |
1462 | if (!fp) { | |
1463 | if (IoFLAGS(io) & IOf_ARGV) { | |
1464 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1465 | IoLINES(io) = 0; |
3280af22 | 1466 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1467 | IoFLAGS(io) &= ~IOf_START; |
9d116dd7 | 1468 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 NIS |
1469 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1470 | SvSETMAGIC(GvSV(PL_last_in_gv)); | |
a2008d6d GS |
1471 | fp = IoIFP(io); |
1472 | goto have_fp; | |
a0d0e21e LW |
1473 | } |
1474 | } | |
3280af22 | 1475 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1476 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1477 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1478 | } |
1479 | } | |
0d44d22b NC |
1480 | else if (type == OP_GLOB) |
1481 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1482 | } |
1483 | else if (type == OP_GLOB) | |
1484 | SP--; | |
a00b5bd3 | 1485 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 | 1486 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 | 1487 | } |
a0d0e21e LW |
1488 | } |
1489 | if (!fp) { | |
790090df HS |
1490 | if (ckWARN2(WARN_GLOB, WARN_CLOSED) |
1491 | && (!io || !(IoFLAGS(io) & IOf_START))) { | |
3f4520fe | 1492 | if (type == OP_GLOB) |
e476b1b5 | 1493 | Perl_warner(aTHX_ WARN_GLOB, |
af8c498a GS |
1494 | "glob failed (can't start child: %s)", |
1495 | Strerror(errno)); | |
69282e91 | 1496 | else |
bc37a18f | 1497 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe | 1498 | } |
54310121 | 1499 | if (gimme == G_SCALAR) { |
a0d0e21e LW |
1500 | (void)SvOK_off(TARG); |
1501 | PUSHTARG; | |
1502 | } | |
1503 | RETURN; | |
1504 | } | |
a2008d6d | 1505 | have_fp: |
54310121 | 1506 | if (gimme == G_SCALAR) { |
a0d0e21e | 1507 | sv = TARG; |
9607fc9c | 1508 | if (SvROK(sv)) |
1509 | sv_unref(sv); | |
a0d0e21e LW |
1510 | (void)SvUPGRADE(sv, SVt_PV); |
1511 | tmplen = SvLEN(sv); /* remember if already alloced */ | |
1512 | if (!tmplen) | |
1513 | Sv_Grow(sv, 80); /* try short-buffering it */ | |
1514 | if (type == OP_RCATLINE) | |
1515 | offset = SvCUR(sv); | |
1516 | else | |
1517 | offset = 0; | |
1518 | } | |
54310121 | 1519 | else { |
1520 | sv = sv_2mortal(NEWSV(57, 80)); | |
1521 | offset = 0; | |
1522 | } | |
fbad3eb5 | 1523 | |
3887d568 AP |
1524 | /* This should not be marked tainted if the fp is marked clean */ |
1525 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1526 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1527 | TAINT; \ | |
1528 | SvTAINTED_on(sv); \ | |
1529 | } | |
1530 | ||
684bef36 | 1531 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1532 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1533 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1534 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1535 | |
a0d0e21e | 1536 | for (;;) { |
09e8efcc | 1537 | PUTBACK; |
fbad3eb5 GS |
1538 | if (!sv_gets(sv, fp, offset) |
1539 | && (type == OP_GLOB || SNARF_EOF(gimme, PL_rs, io, sv))) | |
1540 | { | |
760ac839 | 1541 | PerlIO_clearerr(fp); |
a0d0e21e | 1542 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1543 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1544 | if (fp) |
1545 | continue; | |
3280af22 | 1546 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1547 | } |
1548 | else if (type == OP_GLOB) { | |
e476b1b5 GS |
1549 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
1550 | Perl_warner(aTHX_ WARN_GLOB, | |
4eb79ab5 | 1551 | "glob failed (child exited with status %d%s)", |
894356b3 | 1552 | (int)(STATUS_CURRENT >> 8), |
cf494569 | 1553 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 | 1554 | } |
a0d0e21e | 1555 | } |
54310121 | 1556 | if (gimme == G_SCALAR) { |
a0d0e21e | 1557 | (void)SvOK_off(TARG); |
09e8efcc | 1558 | SPAGAIN; |
a0d0e21e LW |
1559 | PUSHTARG; |
1560 | } | |
3887d568 | 1561 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1562 | RETURN; |
1563 | } | |
3887d568 | 1564 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1565 | IoLINES(io)++; |
b9fee9ba | 1566 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1567 | SvSETMAGIC(sv); |
09e8efcc | 1568 | SPAGAIN; |
a0d0e21e | 1569 | XPUSHs(sv); |
a0d0e21e LW |
1570 | if (type == OP_GLOB) { |
1571 | char *tmps; | |
1572 | ||
3280af22 | 1573 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd | 1574 | tmps = SvEND(sv) - 1; |
3280af22 | 1575 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd | 1576 | *tmps = '\0'; |
1577 | SvCUR(sv)--; | |
1578 | } | |
1579 | } | |
a0d0e21e LW |
1580 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1581 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && | |
1582 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) | |
1583 | break; | |
43384a1a | 1584 | if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1585 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1586 | continue; | |
1587 | } | |
1588 | } | |
54310121 | 1589 | if (gimme == G_ARRAY) { |
a0d0e21e LW |
1590 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1591 | SvLEN_set(sv, SvCUR(sv)+1); | |
1592 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1593 | } | |
1594 | sv = sv_2mortal(NEWSV(58, 80)); | |
1595 | continue; | |
1596 | } | |
54310121 | 1597 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e LW |
1598 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1599 | if (SvCUR(sv) < 60) | |
1600 | SvLEN_set(sv, 80); | |
1601 | else | |
1602 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ | |
1603 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1604 | } | |
1605 | RETURN; | |
1606 | } | |
1607 | } | |
1608 | ||
1609 | PP(pp_enter) | |
1610 | { | |
39644a26 | 1611 | dSP; |
c09156bb | 1612 | register PERL_CONTEXT *cx; |
533c011a | 1613 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e | 1614 | |
54310121 | 1615 | if (gimme == -1) { |
1616 | if (cxstack_ix >= 0) | |
1617 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1618 | else | |
1619 | gimme = G_SCALAR; | |
1620 | } | |
a0d0e21e LW |
1621 | |
1622 | ENTER; | |
1623 | ||
1624 | SAVETMPS; | |
924508f0 | 1625 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
1626 | |
1627 | RETURN; | |
1628 | } | |
1629 | ||
1630 | PP(pp_helem) | |
1631 | { | |
39644a26 | 1632 | dSP; |
760ac839 | 1633 | HE* he; |
ae77835f | 1634 | SV **svp; |
a0d0e21e | 1635 | SV *keysv = POPs; |
a0d0e21e | 1636 | HV *hv = (HV*)POPs; |
78f9721b | 1637 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a | 1638 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
be6c24e0 | 1639 | SV *sv; |
1c846c1f | 1640 | U32 hash = (SvFAKE(keysv) && SvREADONLY(keysv)) ? SvUVX(keysv) : 0; |
9c5ffd7c | 1641 | I32 preeminent = 0; |
a0d0e21e | 1642 | |
ae77835f | 1643 | if (SvTYPE(hv) == SVt_PVHV) { |
1f5346dc SC |
1644 | if (PL_op->op_private & OPpLVAL_INTRO) |
1645 | preeminent = SvRMAGICAL(hv) ? 1 : hv_exists_ent(hv, keysv, 0); | |
1c846c1f | 1646 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
97fcbf96 | 1647 | svp = he ? &HeVAL(he) : 0; |
ae77835f MB |
1648 | } |
1649 | else if (SvTYPE(hv) == SVt_PVAV) { | |
0ebe0038 | 1650 | if (PL_op->op_private & OPpLVAL_INTRO) |
cea2e8a9 | 1651 | DIE(aTHX_ "Can't localize pseudo-hash element"); |
1c846c1f | 1652 | svp = avhv_fetch_ent((AV*)hv, keysv, lval && !defer, hash); |
ae77835f | 1653 | } |
c750a3ec | 1654 | else { |
a0d0e21e | 1655 | RETPUSHUNDEF; |
c750a3ec | 1656 | } |
a0d0e21e | 1657 | if (lval) { |
3280af22 | 1658 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 1659 | SV* lv; |
1660 | SV* key2; | |
2d8e6c8d GS |
1661 | if (!defer) { |
1662 | STRLEN n_a; | |
cea2e8a9 | 1663 | DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); |
2d8e6c8d | 1664 | } |
68dc0745 | 1665 | lv = sv_newmortal(); |
1666 | sv_upgrade(lv, SVt_PVLV); | |
1667 | LvTYPE(lv) = 'y'; | |
14befaf4 | 1668 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 | 1669 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
1670 | LvTARG(lv) = SvREFCNT_inc(hv); | |
1671 | LvTARGLEN(lv) = 1; | |
1672 | PUSHs(lv); | |
1673 | RETURN; | |
1674 | } | |
533c011a | 1675 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f | 1676 | if (HvNAME(hv) && isGV(*svp)) |
533c011a | 1677 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc SC |
1678 | else { |
1679 | if (!preeminent) { | |
1680 | STRLEN keylen; | |
1681 | char *key = SvPV(keysv, keylen); | |
57813020 | 1682 | SAVEDELETE(hv, savepvn(key,keylen), keylen); |
a12c0f56 | 1683 | } else |
1f5346dc SC |
1684 | save_helem(hv, keysv, svp); |
1685 | } | |
5f05dabc | 1686 | } |
533c011a NIS |
1687 | else if (PL_op->op_private & OPpDEREF) |
1688 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 1689 | } |
3280af22 | 1690 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
1691 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1692 | * Pushing the magical RHS on to the stack is useless, since | |
1693 | * that magic is soon destined to be misled by the local(), | |
1694 | * and thus the later pp_sassign() will fail to mg_get() the | |
1695 | * old value. This should also cure problems with delayed | |
1696 | * mg_get()s. GSAR 98-07-03 */ | |
1697 | if (!lval && SvGMAGICAL(sv)) | |
1698 | sv = sv_mortalcopy(sv); | |
1699 | PUSHs(sv); | |
a0d0e21e LW |
1700 | RETURN; |
1701 | } | |
1702 | ||
1703 | PP(pp_leave) | |
1704 | { | |
39644a26 | 1705 | dSP; |
c09156bb | 1706 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
1707 | register SV **mark; |
1708 | SV **newsp; | |
1709 | PMOP *newpm; | |
1710 | I32 gimme; | |
1711 | ||
533c011a | 1712 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1713 | cx = &cxstack[cxstack_ix]; |
3280af22 | 1714 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e LW |
1715 | } |
1716 | ||
1717 | POPBLOCK(cx,newpm); | |
1718 | ||
533c011a | 1719 | gimme = OP_GIMME(PL_op, -1); |
54310121 | 1720 | if (gimme == -1) { |
1721 | if (cxstack_ix >= 0) | |
1722 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1723 | else | |
1724 | gimme = G_SCALAR; | |
1725 | } | |
a0d0e21e | 1726 | |
a1f49e72 | 1727 | TAINT_NOT; |
54310121 | 1728 | if (gimme == G_VOID) |
1729 | SP = newsp; | |
1730 | else if (gimme == G_SCALAR) { | |
1731 | MARK = newsp + 1; | |
09256e2f | 1732 | if (MARK <= SP) { |
54310121 | 1733 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1734 | *MARK = TOPs; | |
1735 | else | |
1736 | *MARK = sv_mortalcopy(TOPs); | |
09256e2f | 1737 | } else { |
54310121 | 1738 | MEXTEND(mark,0); |
3280af22 | 1739 | *MARK = &PL_sv_undef; |
a0d0e21e | 1740 | } |
54310121 | 1741 | SP = MARK; |
a0d0e21e | 1742 | } |
54310121 | 1743 | else if (gimme == G_ARRAY) { |
a1f49e72 CS |
1744 | /* in case LEAVE wipes old return values */ |
1745 | for (mark = newsp + 1; mark <= SP; mark++) { | |
1746 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
a0d0e21e | 1747 | *mark = sv_mortalcopy(*mark); |
a1f49e72 CS |
1748 | TAINT_NOT; /* Each item is independent */ |
1749 | } | |
1750 | } | |
a0d0e21e | 1751 | } |
3280af22 | 1752 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e LW |
1753 | |
1754 | LEAVE; | |
1755 | ||
1756 | RETURN; | |
1757 | } | |
1758 | ||
1759 | PP(pp_iter) | |
1760 | { | |
39644a26 | 1761 | dSP; |
c09156bb | 1762 | register PERL_CONTEXT *cx; |
5f05dabc | 1763 | SV* sv; |
4633a7c4 | 1764 | AV* av; |
1d7c1841 | 1765 | SV **itersvp; |
a0d0e21e | 1766 | |
924508f0 | 1767 | EXTEND(SP, 1); |
a0d0e21e | 1768 | cx = &cxstack[cxstack_ix]; |
6b35e009 | 1769 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 | 1770 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1771 | |
1d7c1841 | 1772 | itersvp = CxITERVAR(cx); |
4633a7c4 | 1773 | av = cx->blk_loop.iterary; |
89ea2908 GA |
1774 | if (SvTYPE(av) != SVt_PVAV) { |
1775 | /* iterate ($min .. $max) */ | |
1776 | if (cx->blk_loop.iterlval) { | |
1777 | /* string increment */ | |
1778 | register SV* cur = cx->blk_loop.iterlval; | |
1779 | STRLEN maxlen; | |
1780 | char *max = SvPV((SV*)av, maxlen); | |
1781 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { | |
4d1ff10f | 1782 | #ifndef USE_5005THREADS /* don't risk potential race */ |
1d7c1841 | 1783 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1784 | /* safe to reuse old SV */ |
1d7c1841 | 1785 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1786 | } |
1c846c1f | 1787 | else |
eaa5c2d6 GA |
1788 | #endif |
1789 | { | |
1790 | /* we need a fresh SV every time so that loop body sees a | |
1791 | * completely new SV for closures/references to work as | |
1792 | * they used to */ | |
1d7c1841 GS |
1793 | SvREFCNT_dec(*itersvp); |
1794 | *itersvp = newSVsv(cur); | |
eaa5c2d6 | 1795 | } |
89ea2908 GA |
1796 | if (strEQ(SvPVX(cur), max)) |
1797 | sv_setiv(cur, 0); /* terminate next time */ | |
1798 | else | |
1799 | sv_inc(cur); | |
1800 | RETPUSHYES; | |
1801 | } | |
1802 | RETPUSHNO; | |
1803 | } | |
1804 | /* integer increment */ | |
1805 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) | |
1806 | RETPUSHNO; | |
7f61b687 | 1807 | |
4d1ff10f | 1808 | #ifndef USE_5005THREADS /* don't risk potential race */ |
1d7c1841 | 1809 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1810 | /* safe to reuse old SV */ |
1d7c1841 | 1811 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 | 1812 | } |
1c846c1f | 1813 | else |
eaa5c2d6 GA |
1814 | #endif |
1815 | { | |
1816 | /* we need a fresh SV every time so that loop body sees a | |
1817 | * completely new SV for closures/references to work as they | |
1818 | * used to */ | |
1d7c1841 GS |
1819 | SvREFCNT_dec(*itersvp); |
1820 | *itersvp = newSViv(cx->blk_loop.iterix++); | |
eaa5c2d6 | 1821 | } |
89ea2908 GA |
1822 | RETPUSHYES; |
1823 | } | |
1824 | ||
1825 | /* iterate array */ | |
3280af22 | 1826 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) |
4633a7c4 | 1827 | RETPUSHNO; |
a0d0e21e | 1828 | |
1d7c1841 | 1829 | SvREFCNT_dec(*itersvp); |
a0d0e21e | 1830 | |
d42935ef JH |
1831 | if (SvMAGICAL(av) || AvREIFY(av)) { |
1832 | SV **svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE); | |
1833 | if (svp) | |
1834 | sv = *svp; | |
1835 | else | |
1836 | sv = Nullsv; | |
1837 | } | |
1838 | else { | |
1839 | sv = AvARRAY(av)[++cx->blk_loop.iterix]; | |
1840 | } | |
1841 | if (sv) | |
a0d0e21e | 1842 | SvTEMP_off(sv); |
a0d0e21e | 1843 | else |
3280af22 | 1844 | sv = &PL_sv_undef; |
8b530633 | 1845 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc | 1846 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc | 1847 | if (lv && SvREFCNT(lv) > 1) { |
1848 | SvREFCNT_dec(lv); | |
1849 | lv = Nullsv; | |
1850 | } | |
5f05dabc | 1851 | if (lv) |
1852 | SvREFCNT_dec(LvTARG(lv)); | |
1853 | else { | |
68dc0745 | 1854 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc | 1855 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc | 1856 | LvTYPE(lv) = 'y'; |
14befaf4 | 1857 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
5f05dabc | 1858 | } |
1859 | LvTARG(lv) = SvREFCNT_inc(av); | |
1860 | LvTARGOFF(lv) = cx->blk_loop.iterix; | |
42718184 | 1861 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc | 1862 | sv = (SV*)lv; |
1863 | } | |
a0d0e21e | 1864 | |
1d7c1841 | 1865 | *itersvp = SvREFCNT_inc(sv); |
a0d0e21e LW |
1866 | RETPUSHYES; |
1867 | } | |
1868 | ||
1869 | PP(pp_subst) | |
1870 | { | |
39644a26 | 1871 | dSP; dTARG; |
a0d0e21e LW |
1872 | register PMOP *pm = cPMOP; |
1873 | PMOP *rpm = pm; | |
1874 | register SV *dstr; | |
1875 | register char *s; | |
1876 | char *strend; | |
1877 | register char *m; | |
1878 | char *c; | |
1879 | register char *d; | |
1880 | STRLEN clen; | |
1881 | I32 iters = 0; | |
1882 | I32 maxiters; | |
1883 | register I32 i; | |
1884 | bool once; | |
71be2cbc | 1885 | bool rxtainted; |
a0d0e21e | 1886 | char *orig; |
22e551b9 | 1887 | I32 r_flags; |
aaa362c4 | 1888 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
1889 | STRLEN len; |
1890 | int force_on_match = 0; | |
3280af22 | 1891 | I32 oldsave = PL_savestack_ix; |
792b2c16 | 1892 | STRLEN slen; |
a0d0e21e | 1893 | |
5cd24f17 | 1894 | /* known replacement string? */ |
1895 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; | |
533c011a | 1896 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
1897 | TARG = POPs; |
1898 | else { | |
54b9620d | 1899 | TARG = DEFSV; |
a0d0e21e | 1900 | EXTEND(SP,1); |
1c846c1f | 1901 | } |
d9f424b2 | 1902 | |
eca06228 NIS |
1903 | if (SvFAKE(TARG) && SvREADONLY(TARG)) |
1904 | sv_force_normal(TARG); | |
68dc0745 | 1905 | if (SvREADONLY(TARG) |
1906 | || (SvTYPE(TARG) > SVt_PVLV | |
1907 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG)))) | |
d470f89e | 1908 | DIE(aTHX_ PL_no_modify); |
8ec5e241 NIS |
1909 | PUTBACK; |
1910 | ||
a0d0e21e | 1911 | s = SvPV(TARG, len); |
68dc0745 | 1912 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 1913 | force_on_match = 1; |
b3eb6a9b | 1914 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 NIS |
1915 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
1916 | if (PL_tainted) | |
b3eb6a9b | 1917 | rxtainted |= 2; |
9212bbba | 1918 | TAINT_NOT; |
a12c0f56 | 1919 | |
53c4c00c | 1920 | PL_reg_match_utf8 = DO_UTF8(TARG); |
d9f424b2 | 1921 | |
a0d0e21e LW |
1922 | force_it: |
1923 | if (!pm || !s) | |
2269b42e | 1924 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
1925 | |
1926 | strend = s + len; | |
53c4c00c | 1927 | slen = PL_reg_match_utf8 ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
1928 | maxiters = 2 * slen + 10; /* We can match twice at each |
1929 | position, once with zero-length, | |
1930 | second time with non-zero. */ | |
a0d0e21e | 1931 | |
3280af22 NIS |
1932 | if (!rx->prelen && PL_curpm) { |
1933 | pm = PL_curpm; | |
aaa362c4 | 1934 | rx = PM_GETRE(pm); |
a0d0e21e | 1935 | } |
22e551b9 | 1936 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
9d080a66 | 1937 | ? REXEC_COPY_STR : 0; |
f722798b | 1938 | if (SvSCREAM(TARG)) |
22e551b9 | 1939 | r_flags |= REXEC_SCREAM; |
a0d0e21e | 1940 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 NIS |
1941 | SAVEINT(PL_multiline); |
1942 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
1943 | } |
1944 | orig = m = s; | |
f722798b | 1945 | if (rx->reganch & RE_USE_INTUIT) { |
ee0b7718 | 1946 | PL_bostr = orig; |
f722798b IZ |
1947 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1948 | ||
1949 | if (!s) | |
1950 | goto nope; | |
1951 | /* How to do it in subst? */ | |
1952 | /* if ( (rx->reganch & ROPT_CHECK_ALL) | |
1c846c1f | 1953 | && !PL_sawampersand |
f722798b IZ |
1954 | && ((rx->reganch & ROPT_NOSCAN) |
1955 | || !((rx->reganch & RE_INTUIT_TAIL) | |
1956 | && (r_flags & REXEC_SCREAM)))) | |
1957 | goto yup; | |
1958 | */ | |
a0d0e21e | 1959 | } |
71be2cbc | 1960 | |
1961 | /* only replace once? */ | |
a0d0e21e | 1962 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc | 1963 | |
1964 | /* known replacement string? */ | |
5cd24f17 | 1965 | c = dstr ? SvPV(dstr, clen) : Nullch; |
71be2cbc | 1966 | |
1967 | /* can do inplace substitution? */ | |
22e551b9 | 1968 | if (c && clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) |
d9f97599 | 1969 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN)) { |
f722798b IZ |
1970 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
1971 | r_flags | REXEC_CHECKED)) | |
1972 | { | |
8ec5e241 | 1973 | SPAGAIN; |
3280af22 | 1974 | PUSHs(&PL_sv_no); |
71be2cbc | 1975 | LEAVE_SCOPE(oldsave); |
1976 | RETURN; | |
1977 | } | |
1978 | if (force_on_match) { | |
1979 | force_on_match = 0; | |
1980 | s = SvPV_force(TARG, len); | |
1981 | goto force_it; | |
1982 | } | |
71be2cbc | 1983 | d = s; |
3280af22 | 1984 | PL_curpm = pm; |
71be2cbc | 1985 | SvSCREAM_off(TARG); /* disable possible screamer */ |
1986 | if (once) { | |
48c036b1 | 1987 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d IZ |
1988 | m = orig + rx->startp[0]; |
1989 | d = orig + rx->endp[0]; | |
71be2cbc | 1990 | s = orig; |
1991 | if (m - s > strend - d) { /* faster to shorten from end */ | |
1992 | if (clen) { | |
1993 | Copy(c, m, clen, char); | |
1994 | m += clen; | |
a0d0e21e | 1995 | } |
71be2cbc | 1996 | i = strend - d; |
1997 | if (i > 0) { | |
1998 | Move(d, m, i, char); | |
1999 | m += i; | |
a0d0e21e | 2000 | } |
71be2cbc | 2001 | *m = '\0'; |
2002 | SvCUR_set(TARG, m - s); | |
2003 | } | |
2004 | /*SUPPRESS 560*/ | |
155aba94 | 2005 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc | 2006 | d -= clen; |
2007 | m = d; | |
2008 | sv_chop(TARG, d-i); | |
2009 | s += i; | |
2010 | while (i--) | |
2011 | *--d = *--s; | |
2012 | if (clen) | |
2013 | Copy(c, m, clen, char); | |
2014 | } | |
2015 | else if (clen) { | |
2016 | d -= clen; | |
2017 | sv_chop(TARG, d); | |
2018 | Copy(c, d, clen, char); | |
2019 | } | |
2020 | else { | |
2021 | sv_chop(TARG, d); | |
2022 | } | |
48c036b1 | 2023 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2024 | SPAGAIN; |
3280af22 | 2025 | PUSHs(&PL_sv_yes); |
71be2cbc | 2026 | } |
2027 | else { | |
71be2cbc | 2028 | do { |
2029 | if (iters++ > maxiters) | |
cea2e8a9 | 2030 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2031 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2032 | m = rx->startp[0] + orig; |
71be2cbc | 2033 | /*SUPPRESS 560*/ |
155aba94 | 2034 | if ((i = m - s)) { |
71be2cbc | 2035 | if (s != d) |
2036 | Move(s, d, i, char); | |
2037 | d += i; | |
a0d0e21e | 2038 | } |
71be2cbc | 2039 | if (clen) { |
2040 | Copy(c, d, clen, char); | |
2041 | d += clen; | |
2042 | } | |
cf93c79d | 2043 | s = rx->endp[0] + orig; |
cea2e8a9 | 2044 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b IZ |
2045 | TARG, NULL, |
2046 | /* don't match same null twice */ | |
2047 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 2048 | if (s != d) { |
2049 | i = strend - s; | |
2050 | SvCUR_set(TARG, d - SvPVX(TARG) + i); | |
2051 | Move(s, d, i+1, char); /* include the NUL */ | |
a0d0e21e | 2052 | } |
48c036b1 | 2053 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2054 | SPAGAIN; |
71be2cbc | 2055 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e | 2056 | } |
80b498e0 | 2057 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 | 2058 | TAINT_IF(rxtainted); |
8ec5e241 NIS |
2059 | if (SvSMAGICAL(TARG)) { |
2060 | PUTBACK; | |
2061 | mg_set(TARG); | |
2062 | SPAGAIN; | |
2063 | } | |
9212bbba | 2064 | SvTAINT(TARG); |
71be2cbc | 2065 | LEAVE_SCOPE(oldsave); |
2066 | RETURN; | |
a0d0e21e | 2067 | } |
71be2cbc | 2068 | |
f722798b IZ |
2069 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2070 | r_flags | REXEC_CHECKED)) | |
2071 | { | |
60aeb6fd NIS |
2072 | bool isutf8; |
2073 | ||
a0d0e21e LW |
2074 | if (force_on_match) { |
2075 | force_on_match = 0; | |
2076 | s = SvPV_force(TARG, len); | |
2077 | goto force_it; | |
2078 | } | |
48c036b1 | 2079 | rxtainted |= RX_MATCH_TAINTED(rx); |
8ec5e241 | 2080 | dstr = NEWSV(25, len); |
a0d0e21e | 2081 | sv_setpvn(dstr, m, s-m); |
ffc61ed2 JH |
2082 | if (DO_UTF8(TARG)) |
2083 | SvUTF8_on(dstr); | |
3280af22 | 2084 | PL_curpm = pm; |
a0d0e21e | 2085 | if (!c) { |
c09156bb | 2086 | register PERL_CONTEXT *cx; |
8ec5e241 | 2087 | SPAGAIN; |
a0d0e21e LW |
2088 | PUSHSUBST(cx); |
2089 | RETURNOP(cPMOP->op_pmreplroot); | |
2090 | } | |
cf93c79d | 2091 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2092 | do { |
2093 | if (iters++ > maxiters) | |
cea2e8a9 | 2094 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2095 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2096 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e LW |
2097 | m = s; |
2098 | s = orig; | |
cf93c79d | 2099 | orig = rx->subbeg; |
a0d0e21e LW |
2100 | s = orig + (m - s); |
2101 | strend = s + (strend - m); | |
2102 | } | |
cf93c79d | 2103 | m = rx->startp[0] + orig; |
a0d0e21e | 2104 | sv_catpvn(dstr, s, m-s); |
cf93c79d | 2105 | s = rx->endp[0] + orig; |
a0d0e21e LW |
2106 | if (clen) |
2107 | sv_catpvn(dstr, c, clen); | |
2108 | if (once) | |
2109 | break; | |
ffc61ed2 JH |
2110 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2111 | TARG, NULL, r_flags)); | |
a0d0e21e | 2112 | sv_catpvn(dstr, s, strend - s); |
748a9306 | 2113 | |
4633a7c4 | 2114 | (void)SvOOK_off(TARG); |
cb0b1708 | 2115 | Safefree(SvPVX(TARG)); |
748a9306 LW |
2116 | SvPVX(TARG) = SvPVX(dstr); |
2117 | SvCUR_set(TARG, SvCUR(dstr)); | |
2118 | SvLEN_set(TARG, SvLEN(dstr)); | |
60aeb6fd | 2119 | isutf8 = DO_UTF8(dstr); |
748a9306 LW |
2120 | SvPVX(dstr) = 0; |
2121 | sv_free(dstr); | |
2122 | ||
48c036b1 | 2123 | TAINT_IF(rxtainted & 1); |
f878fbec | 2124 | SPAGAIN; |
48c036b1 GS |
2125 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2126 | ||
a0d0e21e | 2127 | (void)SvPOK_only(TARG); |
60aeb6fd NIS |
2128 | if (isutf8) |
2129 | SvUTF8_on(TARG); | |
48c036b1 | 2130 | TAINT_IF(rxtainted); |
a0d0e21e | 2131 | SvSETMAGIC(TARG); |
9212bbba | 2132 | SvTAINT(TARG); |
4633a7c4 | 2133 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2134 | RETURN; |
2135 | } | |
5cd24f17 | 2136 | goto ret_no; |
a0d0e21e LW |
2137 | |
2138 | nope: | |
1c846c1f | 2139 | ret_no: |
8ec5e241 | 2140 | SPAGAIN; |
3280af22 | 2141 | PUSHs(&PL_sv_no); |
4633a7c4 | 2142 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2143 | RETURN; |
2144 | } | |
2145 | ||
2146 | PP(pp_grepwhile) | |
2147 | { | |
39644a26 | 2148 | dSP; |
a0d0e21e LW |
2149 | |
2150 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2151 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2152 | ++*PL_markstack_ptr; | |
a0d0e21e LW |
2153 | LEAVE; /* exit inner scope */ |
2154 | ||
2155 | /* All done yet? */ | |
3280af22 | 2156 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2157 | I32 items; |
54310121 | 2158 | I32 gimme = GIMME_V; |
a0d0e21e LW |
2159 | |
2160 | LEAVE; /* exit outer scope */ | |
2161 | (void)POPMARK; /* pop src */ | |
3280af22 | 2162 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2163 | (void)POPMARK; /* pop dst */ |
3280af22 | 2164 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2165 | if (gimme == G_SCALAR) { |
a0d0e21e LW |
2166 | dTARGET; |
2167 | XPUSHi(items); | |
a0d0e21e | 2168 | } |
54310121 | 2169 | else if (gimme == G_ARRAY) |
2170 | SP += items; | |
a0d0e21e LW |
2171 | RETURN; |
2172 | } | |
2173 | else { | |
2174 | SV *src; | |
2175 | ||
2176 | ENTER; /* enter inner scope */ | |
1d7c1841 | 2177 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2178 | |
3280af22 | 2179 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2180 | SvTEMP_off(src); |
54b9620d | 2181 | DEFSV = src; |
a0d0e21e LW |
2182 | |
2183 | RETURNOP(cLOGOP->op_other); | |
2184 | } | |
2185 | } | |
2186 | ||
2187 | PP(pp_leavesub) | |
2188 | { | |
39644a26 | 2189 | dSP; |
a0d0e21e LW |
2190 | SV **mark; |
2191 | SV **newsp; | |
2192 | PMOP *newpm; | |
2193 | I32 gimme; | |
c09156bb | 2194 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2195 | SV *sv; |
a0d0e21e LW |
2196 | |
2197 | POPBLOCK(cx,newpm); | |
1c846c1f | 2198 | |
a1f49e72 | 2199 | TAINT_NOT; |
a0d0e21e LW |
2200 | if (gimme == G_SCALAR) { |
2201 | MARK = newsp + 1; | |
a29cdaf0 | 2202 | if (MARK <= SP) { |
a8bba7fa | 2203 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 IZ |
2204 | if (SvTEMP(TOPs)) { |
2205 | *MARK = SvREFCNT_inc(TOPs); | |
2206 | FREETMPS; | |
2207 | sv_2mortal(*MARK); | |
cd06dffe GS |
2208 | } |
2209 | else { | |
959e3673 | 2210 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2211 | FREETMPS; |
959e3673 GS |
2212 | *MARK = sv_mortalcopy(sv); |
2213 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2214 | } |
cd06dffe GS |
2215 | } |
2216 | else | |
a29cdaf0 | 2217 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe GS |
2218 | } |
2219 | else { | |
f86702cc | 2220 | MEXTEND(MARK, 0); |
3280af22 | 2221 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2222 | } |
2223 | SP = MARK; | |
2224 | } | |
54310121 | 2225 | else if (gimme == G_ARRAY) { |
f86702cc | 2226 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 | 2227 | if (!SvTEMP(*MARK)) { |
f86702cc | 2228 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2229 | TAINT_NOT; /* Each item is independent */ |
2230 | } | |
f86702cc | 2231 | } |
a0d0e21e | 2232 | } |
f86702cc | 2233 | PUTBACK; |
1c846c1f | 2234 | |
b0d9ce38 | 2235 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2236 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e LW |
2237 | |
2238 | LEAVE; | |
b0d9ce38 | 2239 | LEAVESUB(sv); |
a0d0e21e LW |
2240 | return pop_return(); |
2241 | } | |
2242 | ||
cd06dffe GS |
2243 | /* This duplicates the above code because the above code must not |
2244 | * get any slower by more conditions */ | |
2245 | PP(pp_leavesublv) | |
2246 | { | |
39644a26 | 2247 | dSP; |
cd06dffe GS |
2248 | SV **mark; |
2249 | SV **newsp; | |
2250 | PMOP *newpm; | |
2251 | I32 gimme; | |
2252 | register PERL_CONTEXT *cx; | |
b0d9ce38 | 2253 | SV *sv; |
cd06dffe GS |
2254 | |
2255 | POPBLOCK(cx,newpm); | |
1c846c1f | 2256 | |
cd06dffe GS |
2257 | TAINT_NOT; |
2258 | ||
2259 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { | |
2260 | /* We are an argument to a function or grep(). | |
2261 | * This kind of lvalueness was legal before lvalue | |
2262 | * subroutines too, so be backward compatible: | |
2263 | * cannot report errors. */ | |
2264 | ||
2265 | /* Scalar context *is* possible, on the LHS of -> only, | |
2266 | * as in f()->meth(). But this is not an lvalue. */ | |
2267 | if (gimme == G_SCALAR) | |
2268 | goto temporise; | |
2269 | if (gimme == G_ARRAY) { | |
a8bba7fa | 2270 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe GS |
2271 | goto temporise_array; |
2272 | EXTEND_MORTAL(SP - newsp); | |
2273 | for (mark = newsp + 1; mark <= SP; mark++) { | |
2274 | if (SvTEMP(*mark)) | |
2275 | /* empty */ ; | |
2276 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) | |
2277 | *mark = sv_mortalcopy(*mark); | |
2278 | else { | |
2279 | /* Can be a localized value subject to deletion. */ | |
2280 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2281 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2282 | } |
2283 | } | |
2284 | } | |
2285 | } | |
2286 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ | |
2287 | /* Here we go for robustness, not for speed, so we change all | |
2288 | * the refcounts so the caller gets a live guy. Cannot set | |
2289 | * TEMP, so sv_2mortal is out of question. */ | |
a8bba7fa | 2290 | if (!CvLVALUE(cx->blk_sub.cv)) { |
b0d9ce38 | 2291 | POPSUB(cx,sv); |
d470f89e | 2292 | PL_curpm = newpm; |
b0d9ce38 GS |
2293 | LEAVE; |
2294 | LEAVESUB(sv); | |
d470f89e GS |
2295 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2296 | } | |
cd06dffe GS |
2297 | if (gimme == G_SCALAR) { |
2298 | MARK = newsp + 1; | |
2299 | EXTEND_MORTAL(1); | |
2300 | if (MARK == SP) { | |
d470f89e | 2301 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
b0d9ce38 | 2302 | POPSUB(cx,sv); |
d470f89e | 2303 | PL_curpm = newpm; |
b0d9ce38 GS |
2304 | LEAVE; |
2305 | LEAVESUB(sv); | |
d470f89e | 2306 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
cd06dffe | 2307 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); |
d470f89e | 2308 | } |
cd06dffe GS |
2309 | else { /* Can be a localized value |
2310 | * subject to deletion. */ | |
2311 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2312 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2313 | } |
2314 | } | |
d470f89e | 2315 | else { /* Should not happen? */ |
b0d9ce38 | 2316 | POPSUB(cx,sv); |
d470f89e | 2317 | PL_curpm = newpm; |
b0d9ce38 GS |
2318 | LEAVE; |
2319 | LEAVESUB(sv); | |
d470f89e | 2320 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe | 2321 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e | 2322 | } |
cd06dffe GS |
2323 | SP = MARK; |
2324 | } | |
2325 | else if (gimme == G_ARRAY) { | |
2326 | EXTEND_MORTAL(SP - newsp); | |
2327 | for (mark = newsp + 1; mark <= SP; mark++) { | |
f206cdda AMS |
2328 | if (*mark != &PL_sv_undef |
2329 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { | |
d470f89e GS |
2330 | /* Might be flattened array after $#array = */ |
2331 | PUTBACK; | |
b0d9ce38 | 2332 | POPSUB(cx,sv); |
d470f89e | 2333 | PL_curpm = newpm; |
b0d9ce38 GS |
2334 | LEAVE; |
2335 | LEAVESUB(sv); | |
f206cdda AMS |
2336 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2337 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
d470f89e | 2338 | } |
cd06dffe | 2339 | else { |
cd06dffe GS |
2340 | /* Can be a localized value subject to deletion. */ |
2341 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2342 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2343 | } |
2344 | } | |
2345 | } | |
2346 | } | |
2347 | else { | |
2348 | if (gimme == G_SCALAR) { | |
2349 | temporise: | |
2350 | MARK = newsp + 1; | |
2351 | if (MARK <= SP) { | |
a8bba7fa | 2352 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe GS |
2353 | if (SvTEMP(TOPs)) { |
2354 | *MARK = SvREFCNT_inc(TOPs); | |
2355 | FREETMPS; | |
2356 | sv_2mortal(*MARK); | |
2357 | } | |
2358 | else { | |
959e3673 | 2359 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe | 2360 | FREETMPS; |
959e3673 GS |
2361 | *MARK = sv_mortalcopy(sv); |
2362 | SvREFCNT_dec(sv); | |
cd06dffe GS |
2363 | } |
2364 | } | |
2365 | else | |
2366 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
2367 | } | |
2368 | else { | |
2369 | MEXTEND(MARK, 0); | |
2370 | *MARK = &PL_sv_undef; | |
2371 | } | |
2372 | SP = MARK; | |
2373 | } | |
2374 | else if (gimme == G_ARRAY) { | |
2375 | temporise_array: | |
2376 | for (MARK = newsp + 1; MARK <= SP; MARK++) { | |
2377 | if (!SvTEMP(*MARK)) { | |
2378 | *MARK = sv_mortalcopy(*MARK); | |
2379 | TAINT_NOT; /* Each item is independent */ | |
2380 | } | |
2381 | } | |
2382 | } | |
2383 | } | |
2384 | PUTBACK; | |
1c846c1f | 2385 | |
b0d9ce38 | 2386 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe GS |
2387 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2388 | ||
2389 | LEAVE; | |
b0d9ce38 | 2390 | LEAVESUB(sv); |
cd06dffe GS |
2391 | return pop_return(); |
2392 | } | |
2393 | ||
2394 | ||
76e3520e | 2395 | STATIC CV * |
cea2e8a9 | 2396 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 | 2397 | { |
3280af22 | 2398 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 GS |
2399 | |
2400 | if (!PERLDB_SUB_NN) { | |
2401 | GV *gv = CvGV(cv); | |
2402 | ||
2403 | save_item(dbsv); | |
2404 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) | |
1c846c1f | 2405 | || strEQ(GvNAME(gv), "END") |
491527d0 GS |
2406 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
2407 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) | |
2408 | && (gv = (GV*)*svp) ))) { | |
2409 | /* Use GV from the stack as a fallback. */ | |
2410 | /* GV is potentially non-unique, or contain different CV. */ | |
c2e66d9e GS |
2411 | SV *tmp = newRV((SV*)cv); |
2412 | sv_setsv(dbsv, tmp); | |
2413 | SvREFCNT_dec(tmp); | |
491527d0 GS |
2414 | } |
2415 | else { | |
2416 | gv_efullname3(dbsv, gv, Nullch); | |
2417 | } | |
3de9ffa1 MB |
2418 | } |
2419 | else { | |
155aba94 GS |
2420 | (void)SvUPGRADE(dbsv, SVt_PVIV); |
2421 | (void)SvIOK_on(dbsv); | |
491527d0 | 2422 | SAVEIV(SvIVX(dbsv)); |
5bc28da9 | 2423 | SvIVX(dbsv) = PTR2IV(cv); /* Do it the quickest way */ |
3de9ffa1 | 2424 | } |
491527d0 | 2425 | |
3de9ffa1 | 2426 | if (CvXSUB(cv)) |
3280af22 NIS |
2427 | PL_curcopdb = PL_curcop; |
2428 | cv = GvCV(PL_DBsub); | |
3de9ffa1 MB |
2429 | return cv; |
2430 | } | |
2431 | ||
a0d0e21e LW |
2432 | PP(pp_entersub) |
2433 | { | |
39644a26 | 2434 | dSP; dPOPss; |
a0d0e21e LW |
2435 | GV *gv; |
2436 | HV *stash; | |
2437 | register CV *cv; | |
c09156bb | 2438 | register PERL_CONTEXT *cx; |
5d94fbed | 2439 | I32 gimme; |
533c011a | 2440 | bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2441 | |
2442 | if (!sv) | |
cea2e8a9 | 2443 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e LW |
2444 | switch (SvTYPE(sv)) { |
2445 | default: | |
2446 | if (!SvROK(sv)) { | |
748a9306 | 2447 | char *sym; |
2d8e6c8d | 2448 | STRLEN n_a; |
748a9306 | 2449 | |
3280af22 | 2450 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a | 2451 | if (hasargs) |
3280af22 | 2452 | SP = PL_stack_base + POPMARK; |
a0d0e21e | 2453 | RETURN; |
fb73857a | 2454 | } |
15ff848f CS |
2455 | if (SvGMAGICAL(sv)) { |
2456 | mg_get(sv); | |
f5f1d18e AMS |
2457 | if (SvROK(sv)) |
2458 | goto got_rv; | |
15ff848f CS |
2459 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; |
2460 | } | |
2461 | else | |
2d8e6c8d | 2462 | sym = SvPV(sv, n_a); |
15ff848f | 2463 | if (!sym) |
cea2e8a9 | 2464 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2465 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 | 2466 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 | 2467 | cv = get_cv(sym, TRUE); |
a0d0e21e LW |
2468 | break; |
2469 | } | |
f5f1d18e | 2470 | got_rv: |
f5284f61 IZ |
2471 | { |
2472 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ | |
2473 | tryAMAGICunDEREF(to_cv); | |
2474 | } | |
a0d0e21e LW |
2475 | cv = (CV*)SvRV(sv); |
2476 | if (SvTYPE(cv) == SVt_PVCV) | |
2477 | break; | |
2478 | /* FALL THROUGH */ | |
2479 | case SVt_PVHV: | |
2480 | case SVt_PVAV: | |
cea2e8a9 | 2481 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e LW |
2482 | case SVt_PVCV: |
2483 | cv = (CV*)sv; | |
2484 | break; | |
2485 | case SVt_PVGV: | |
8ebc5c01 | 2486 | if (!(cv = GvCVu((GV*)sv))) |
f6ec51f7 GS |
2487 | cv = sv_2cv(sv, &stash, &gv, FALSE); |
2488 | if (!cv) { | |
2489 | ENTER; | |
2490 | SAVETMPS; | |
2491 | goto try_autoload; | |
2492 | } | |
2493 | break; | |
a0d0e21e LW |
2494 | } |
2495 | ||
2496 | ENTER; | |
2497 | SAVETMPS; | |
2498 | ||
2499 | retry: | |
a0d0e21e | 2500 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
44a8e56a | 2501 | GV* autogv; |
22239a37 | 2502 | SV* sub_name; |
44a8e56a | 2503 | |
2504 | /* anonymous or undef'd function leaves us no recourse */ | |
2505 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
cea2e8a9 | 2506 | DIE(aTHX_ "Undefined subroutine called"); |
67caa1fe | 2507 | |
44a8e56a | 2508 | /* autoloaded stub? */ |
2509 | if (cv != GvCV(gv)) { | |
2510 | cv = GvCV(gv); | |
a0d0e21e | 2511 | } |
44a8e56a | 2512 | /* should call AUTOLOAD now? */ |
67caa1fe | 2513 | else { |
f6ec51f7 GS |
2514 | try_autoload: |
2515 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), | |
2516 | FALSE))) | |
2517 | { | |
2518 | cv = GvCV(autogv); | |
2519 | } | |
2520 | /* sorry */ | |
2521 | else { | |
2522 | sub_name = sv_newmortal(); | |
2523 | gv_efullname3(sub_name, gv, Nullch); | |
cea2e8a9 | 2524 | DIE(aTHX_ "Undefined subroutine &%s called", SvPVX(sub_name)); |
f6ec51f7 | 2525 | } |
67caa1fe GS |
2526 | } |
2527 | if (!cv) | |
cea2e8a9 | 2528 | DIE(aTHX_ "Not a CODE reference"); |
67caa1fe | 2529 | goto retry; |
a0d0e21e LW |
2530 | } |
2531 | ||
54310121 | 2532 | gimme = GIMME_V; |
67caa1fe | 2533 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
4f01c5a5 | 2534 | cv = get_db_sub(&sv, cv); |
67caa1fe | 2535 | if (!cv) |
cea2e8a9 | 2536 | DIE(aTHX_ "No DBsub routine"); |
67caa1fe | 2537 | } |
a0d0e21e | 2538 | |
4d1ff10f | 2539 | #ifdef USE_5005THREADS |
3de9ffa1 MB |
2540 | /* |
2541 | * First we need to check if the sub or method requires locking. | |
458fb581 MB |
2542 | * If so, we gain a lock on the CV, the first argument or the |
2543 | * stash (for static methods), as appropriate. This has to be | |
2544 | * inline because for FAKE_THREADS, COND_WAIT inlines code to | |
2545 | * reschedule by returning a new op. | |
3de9ffa1 | 2546 | */ |
11343788 | 2547 | MUTEX_LOCK(CvMUTEXP(cv)); |
77a005ab MB |
2548 | if (CvFLAGS(cv) & CVf_LOCKED) { |
2549 | MAGIC *mg; | |
2550 | if (CvFLAGS(cv) & CVf_METHOD) { | |
533c011a NIS |
2551 | if (SP > PL_stack_base + TOPMARK) |
2552 | sv = *(PL_stack_base + TOPMARK + 1); | |
77a005ab | 2553 | else { |
13e08037 GS |
2554 | AV *av = (AV*)PL_curpad[0]; |
2555 | if (hasargs || !av || AvFILLp(av) < 0 | |
2556 | || !(sv = AvARRAY(av)[0])) | |
2557 | { | |
2558 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
d470f89e | 2559 | DIE(aTHX_ "no argument for locked method call"); |
13e08037 | 2560 | } |
77a005ab MB |
2561 | } |
2562 | if (SvROK(sv)) | |
2563 | sv = SvRV(sv); | |
458fb581 MB |
2564 | else { |
2565 | STRLEN len; | |
2566 | char *stashname = SvPV(sv, len); | |
2567 | sv = (SV*)gv_stashpvn(stashname, len, TRUE); | |
2568 | } | |
77a005ab MB |
2569 | } |
2570 | else { | |
2571 | sv = (SV*)cv; | |
2572 | } | |
2573 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
2574 | mg = condpair_magic(sv); | |
2575 | MUTEX_LOCK(MgMUTEXP(mg)); | |
2576 | if (MgOWNER(mg) == thr) | |
2577 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
2578 | else { | |
2579 | while (MgOWNER(mg)) | |
2580 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); | |
2581 | MgOWNER(mg) = thr; | |
bf49b057 | 2582 | DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: pp_entersub lock %p\n", |
a674cc95 | 2583 | thr, sv)); |
77a005ab | 2584 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
c76ac1ee | 2585 | SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv); |
11343788 | 2586 | } |
77a005ab | 2587 | MUTEX_LOCK(CvMUTEXP(cv)); |
11343788 | 2588 | } |
3de9ffa1 MB |
2589 | /* |
2590 | * Now we have permission to enter the sub, we must distinguish | |
2591 | * four cases. (0) It's an XSUB (in which case we don't care | |
2592 | * about ownership); (1) it's ours already (and we're recursing); | |
2593 | * (2) it's free (but we may already be using a cached clone); | |
2594 | * (3) another thread owns it. Case (1) is easy: we just use it. | |
2595 | * Case (2) means we look for a clone--if we have one, use it | |
2596 | * otherwise grab ownership of cv. Case (3) means we look for a | |
2597 | * clone (for non-XSUBs) and have to create one if we don't | |
2598 | * already have one. | |
2599 | * Why look for a clone in case (2) when we could just grab | |
2600 | * ownership of cv straight away? Well, we could be recursing, | |
2601 | * i.e. we originally tried to enter cv while another thread | |
2602 | * owned it (hence we used a clone) but it has been freed up | |
2603 | * and we're now recursing into it. It may or may not be "better" | |
2604 | * to use the clone but at least CvDEPTH can be trusted. | |
2605 | */ | |
2606 | if (CvOWNER(cv) == thr || CvXSUB(cv)) | |
2607 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
11343788 | 2608 | else { |
3de9ffa1 MB |
2609 | /* Case (2) or (3) */ |
2610 | SV **svp; | |
2611 | ||
11343788 | 2612 | /* |
3de9ffa1 MB |
2613 | * XXX Might it be better to release CvMUTEXP(cv) while we |
2614 | * do the hv_fetch? We might find someone has pinched it | |
2615 | * when we look again, in which case we would be in case | |
2616 | * (3) instead of (2) so we'd have to clone. Would the fact | |
2617 | * that we released the mutex more quickly make up for this? | |
2618 | */ | |
b099ddc0 | 2619 | if ((svp = hv_fetch(thr->cvcache, (char *)cv, sizeof(cv), FALSE))) |
6ee623d5 | 2620 | { |
3de9ffa1 | 2621 | /* We already have a clone to use */ |
11343788 | 2622 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
3de9ffa1 | 2623 | cv = *(CV**)svp; |
bf49b057 | 2624 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1fd28e87 MB |
2625 | "entersub: %p already has clone %p:%s\n", |
2626 | thr, cv, SvPEEK((SV*)cv))); | |
3de9ffa1 MB |
2627 | CvOWNER(cv) = thr; |
2628 | SvREFCNT_inc(cv); | |
2629 | if (CvDEPTH(cv) == 0) | |
c76ac1ee | 2630 | SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); |
3de9ffa1 | 2631 | } |
11343788 | 2632 | else { |
3de9ffa1 MB |
2633 | /* (2) => grab ownership of cv. (3) => make clone */ |
2634 | if (!CvOWNER(cv)) { | |
2635 | CvOWNER(cv) = thr; | |
2636 | SvREFCNT_inc(cv); | |
11343788 | 2637 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
bf49b057 | 2638 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1fd28e87 MB |
2639 | "entersub: %p grabbing %p:%s in stash %s\n", |
2640 | thr, cv, SvPEEK((SV*)cv), CvSTASH(cv) ? | |
3de9ffa1 | 2641 | HvNAME(CvSTASH(cv)) : "(none)")); |
cd06dffe GS |
2642 | } |
2643 | else { | |
3de9ffa1 MB |
2644 | /* Make a new clone. */ |
2645 | CV *clonecv; | |
2646 | SvREFCNT_inc(cv); /* don't let it vanish from under us */ | |
2647 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
bf49b057 | 2648 | DEBUG_S((PerlIO_printf(Perl_debug_log, |
1fd28e87 MB |
2649 | "entersub: %p cloning %p:%s\n", |
2650 | thr, cv, SvPEEK((SV*)cv)))); | |
3de9ffa1 MB |
2651 | /* |
2652 | * We're creating a new clone so there's no race | |
2653 | * between the original MUTEX_UNLOCK and the | |
2654 | * SvREFCNT_inc since no one will be trying to undef | |
2655 | * it out from underneath us. At least, I don't think | |
2656 | * there's a race... | |
2657 | */ | |
2658 | clonecv = cv_clone(cv); | |
2659 | SvREFCNT_dec(cv); /* finished with this */ | |
199100c8 | 2660 | hv_store(thr->cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0); |
3de9ffa1 MB |
2661 | CvOWNER(clonecv) = thr; |
2662 | cv = clonecv; | |
11343788 | 2663 | SvREFCNT_inc(cv); |
11343788 | 2664 | } |
8b73bbec | 2665 | DEBUG_S(if (CvDEPTH(cv) != 0) |
bf49b057 | 2666 | PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", |
755b0776 | 2667 | CvDEPTH(cv))); |
c76ac1ee | 2668 | SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); |
11343788 | 2669 | } |
3de9ffa1 | 2670 | } |
4d1ff10f | 2671 | #endif /* USE_5005THREADS */ |
11343788 | 2672 | |
a0d0e21e | 2673 | if (CvXSUB(cv)) { |
67caa1fe | 2674 | #ifdef PERL_XSUB_OLDSTYLE |
a0d0e21e | 2675 | if (CvOLDSTYLE(cv)) { |
20ce7b12 | 2676 | I32 (*fp3)(int,int,int); |
a0d0e21e LW |
2677 | dMARK; |
2678 | register I32 items = SP - MARK; | |
67955e0c | 2679 | /* We dont worry to copy from @_. */ |
924508f0 GS |
2680 | while (SP > mark) { |
2681 | SP[1] = SP[0]; | |
2682 | SP--; | |
a0d0e21e | 2683 | } |
3280af22 | 2684 | PL_stack_sp = mark + 1; |
1d7c1841 | 2685 | fp3 = (I32(*)(int,int,int))CvXSUB(cv); |
1c846c1f | 2686 | items = (*fp3)(CvXSUBANY(cv).any_i32, |
3280af22 | 2687 | MARK - PL_stack_base + 1, |
ecfc5424 | 2688 | items); |
3280af22 | 2689 | PL_stack_sp = PL_stack_base + items; |
a0d0e21e | 2690 | } |
67caa1fe GS |
2691 | else |
2692 | #endif /* PERL_XSUB_OLDSTYLE */ | |
2693 | { | |
748a9306 LW |
2694 | I32 markix = TOPMARK; |
2695 | ||
a0d0e21e | 2696 | PUTBACK; |
67955e0c | 2697 | |
2698 | if (!hasargs) { | |
2699 | /* Need to copy @_ to stack. Alternative may be to | |
2700 | * switch stack to @_, and copy return values | |
2701 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
6d4ff0d2 MB |
2702 | AV* av; |
2703 | I32 items; | |
4d1ff10f | 2704 | #ifdef USE_5005THREADS |
533c011a | 2705 | av = (AV*)PL_curpad[0]; |
6d4ff0d2 | 2706 | #else |
3280af22 | 2707 | av = GvAV(PL_defgv); |
4d1ff10f | 2708 | #endif /* USE_5005THREADS */ |
93965878 | 2709 | items = AvFILLp(av) + 1; /* @_ is not tieable */ |
67955e0c | 2710 | |
2711 | if (items) { | |
2712 | /* Mark is at the end of the stack. */ | |
924508f0 GS |
2713 | EXTEND(SP, items); |
2714 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2715 | SP += items; | |
1c846c1f | 2716 | PUTBACK ; |
67955e0c | 2717 | } |
2718 | } | |
67caa1fe GS |
2719 | /* We assume first XSUB in &DB::sub is the called one. */ |
2720 | if (PL_curcopdb) { | |
1d7c1841 | 2721 | SAVEVPTR(PL_curcop); |
3280af22 NIS |
2722 | PL_curcop = PL_curcopdb; |
2723 | PL_curcopdb = NULL; | |
67955e0c | 2724 | } |
2725 | /* Do we need to open block here? XXXX */ | |
acfe0abc | 2726 | (void)(*CvXSUB(cv))(aTHX_ cv); |
748a9306 LW |
2727 | |
2728 | /* Enforce some sanity in scalar context. */ | |
3280af22 NIS |
2729 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { |
2730 | if (markix > PL_stack_sp - PL_stack_base) | |
2731 | *(PL_stack_base + markix) = &PL_sv_undef; | |
748a9306 | 2732 | else |
3280af22 NIS |
2733 | *(PL_stack_base + markix) = *PL_stack_sp; |
2734 | PL_stack_sp = PL_stack_base + markix; | |
748a9306 | 2735 | } |
a0d0e21e LW |
2736 | } |
2737 | LEAVE; | |
2738 | return NORMAL; | |
2739 | } | |
2740 | else { | |
2741 | dMARK; | |
2742 | register I32 items = SP - MARK; | |
a0d0e21e LW |
2743 | AV* padlist = CvPADLIST(cv); |
2744 | SV** svp = AvARRAY(padlist); | |
533c011a | 2745 | push_return(PL_op->op_next); |
a0d0e21e LW |
2746 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2747 | PUSHSUB(cx); | |
2748 | CvDEPTH(cv)++; | |
6b35e009 GS |
2749 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2750 | * that eval'' ops within this sub know the correct lexical space. | |
2751 | * Owing the speed considerations, we choose to search for the cv | |
2752 | * in doeval() instead. | |
2753 | */ | |
a0d0e21e LW |
2754 | if (CvDEPTH(cv) < 2) |
2755 | (void)SvREFCNT_inc(cv); | |
2756 | else { /* save temporaries on recursion? */ | |
1d7c1841 | 2757 | PERL_STACK_OVERFLOW_CHECK(); |
93965878 | 2758 | if (CvDEPTH(cv) > AvFILLp(padlist)) { |
a0d0e21e LW |
2759 | AV *av; |
2760 | AV *newpad = newAV(); | |
4aa0a1f7 | 2761 | SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]); |
93965878 | 2762 | I32 ix = AvFILLp((AV*)svp[1]); |
1d7c1841 | 2763 | I32 names_fill = AvFILLp((AV*)svp[0]); |
a0d0e21e | 2764 | svp = AvARRAY(svp[0]); |
748a9306 | 2765 | for ( ;ix > 0; ix--) { |
1d7c1841 | 2766 | if (names_fill >= ix && svp[ix] != &PL_sv_undef) { |
748a9306 | 2767 | char *name = SvPVX(svp[ix]); |
5f05dabc | 2768 | if ((SvFLAGS(svp[ix]) & SVf_FAKE) /* outer lexical? */ |
2769 | || *name == '&') /* anonymous code? */ | |
2770 | { | |
2771 | av_store(newpad, ix, SvREFCNT_inc(oldpad[ix])); | |
748a9306 LW |
2772 | } |
2773 | else { /* our own lexical */ | |
2774 | if (*name == '@') | |
2775 | av_store(newpad, ix, sv = (SV*)newAV()); | |
2776 | else if (*name == '%') | |
2777 | av_store(newpad, ix, sv = (SV*)newHV()); | |
2778 | else | |
2779 | av_store(newpad, ix, sv = NEWSV(0,0)); | |
2780 | SvPADMY_on(sv); | |
2781 | } | |
a0d0e21e | 2782 | } |
1d7c1841 GS |
2783 | else if (IS_PADGV(oldpad[ix]) || IS_PADCONST(oldpad[ix])) { |
2784 | av_store(newpad, ix, sv = SvREFCNT_inc(oldpad[ix])); | |
2785 | } | |
a0d0e21e | 2786 | else { |
748a9306 | 2787 | av_store(newpad, ix, sv = NEWSV(0,0)); |
a0d0e21e LW |
2788 | SvPADTMP_on(sv); |
2789 | } | |
2790 | } | |
2791 | av = newAV(); /* will be @_ */ | |
2792 | av_extend(av, 0); | |
2793 | av_store(newpad, 0, (SV*)av); | |
2794 | AvFLAGS(av) = AVf_REIFY; | |
2795 | av_store(padlist, CvDEPTH(cv), (SV*)newpad); | |
93965878 | 2796 | AvFILLp(padlist) = CvDEPTH(cv); |
a0d0e21e LW |
2797 | svp = AvARRAY(padlist); |
2798 | } | |
2799 | } | |
4d1ff10f | 2800 | #ifdef USE_5005THREADS |
6d4ff0d2 | 2801 | if (!hasargs) { |
533c011a | 2802 | AV* av = (AV*)PL_curpad[0]; |
6d4ff0d2 | 2803 | |
93965878 | 2804 | items = AvFILLp(av) + 1; |
6d4ff0d2 MB |
2805 | if (items) { |
2806 | /* Mark is at the end of the stack. */ | |
924508f0 GS |
2807 | EXTEND(SP, items); |
2808 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2809 | SP += items; | |
1c846c1f | 2810 | PUTBACK ; |
6d4ff0d2 MB |
2811 | } |
2812 | } | |
4d1ff10f | 2813 | #endif /* USE_5005THREADS */ |
1d7c1841 | 2814 | SAVEVPTR(PL_curpad); |
3280af22 | 2815 | PL_curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]); |
4d1ff10f | 2816 | #ifndef USE_5005THREADS |
6d4ff0d2 | 2817 | if (hasargs) |
4d1ff10f | 2818 | #endif /* USE_5005THREADS */ |
6d4ff0d2 MB |
2819 | { |
2820 | AV* av; | |
a0d0e21e LW |
2821 | SV** ary; |
2822 | ||
77a005ab | 2823 | #if 0 |
bf49b057 | 2824 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2825 | "%p entersub preparing @_\n", thr)); |
77a005ab | 2826 | #endif |
3280af22 | 2827 | av = (AV*)PL_curpad[0]; |
221373f0 GS |
2828 | if (AvREAL(av)) { |
2829 | /* @_ is normally not REAL--this should only ever | |
2830 | * happen when DB::sub() calls things that modify @_ */ | |
2831 | av_clear(av); | |
2832 | AvREAL_off(av); | |
2833 | AvREIFY_on(av); | |
2834 | } | |
4d1ff10f | 2835 | #ifndef USE_5005THREADS |
3280af22 NIS |
2836 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2837 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); | |
4d1ff10f | 2838 | #endif /* USE_5005THREADS */ |
7032098e | 2839 | cx->blk_sub.oldcurpad = PL_curpad; |
6d4ff0d2 | 2840 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2841 | ++MARK; |
2842 | ||
2843 | if (items > AvMAX(av) + 1) { | |
2844 | ary = AvALLOC(av); | |
2845 | if (AvARRAY(av) != ary) { | |
2846 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
2847 | SvPVX(av) = (char*)ary; | |
2848 | } | |
2849 | if (items > AvMAX(av) + 1) { | |
2850 | AvMAX(av) = items - 1; | |
2851 | Renew(ary,items,SV*); | |
2852 | AvALLOC(av) = ary; | |
2853 | SvPVX(av) = (char*)ary; | |
2854 | } | |
2855 | } | |
2856 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2857 | AvFILLp(av) = items - 1; |
1c846c1f | 2858 | |
a0d0e21e LW |
2859 | while (items--) { |
2860 | if (*MARK) | |
2861 | SvTEMP_off(*MARK); | |
2862 | MARK++; | |
2863 | } | |
2864 | } | |
4a925ff6 GS |
2865 | /* warning must come *after* we fully set up the context |
2866 | * stuff so that __WARN__ handlers can safely dounwind() | |
2867 | * if they want to | |
2868 | */ | |
2869 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) | |
2870 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) | |
2871 | sub_crush_depth(cv); | |
77a005ab | 2872 | #if 0 |
bf49b057 | 2873 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2874 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab | 2875 | #endif |
a0d0e21e LW |
2876 | RETURNOP(CvSTART(cv)); |
2877 | } | |
2878 | } | |
2879 | ||
44a8e56a | 2880 | void |
864dbfa3 | 2881 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2882 | { |
2883 | if (CvANON(cv)) | |
cea2e8a9 | 2884 | Perl_warner(aTHX_ WARN_RECURSION, "Deep recursion on anonymous subroutine"); |
44a8e56a | 2885 | else { |
2886 | SV* tmpstr = sv_newmortal(); | |
2887 | gv_efullname3(tmpstr, CvGV(cv), Nullch); | |
1c846c1f | 2888 | Perl_warner(aTHX_ WARN_RECURSION, "Deep recursion on subroutine \"%s\"", |
599cee73 | 2889 | SvPVX(tmpstr)); |
44a8e56a | 2890 | } |
2891 | } | |
2892 | ||
a0d0e21e LW |
2893 | PP(pp_aelem) |
2894 | { | |
39644a26 | 2895 | dSP; |
a0d0e21e | 2896 | SV** svp; |
d804643f SC |
2897 | SV* elemsv = POPs; |
2898 | IV elem = SvIV(elemsv); | |
68dc0745 | 2899 | AV* av = (AV*)POPs; |
78f9721b | 2900 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a | 2901 | U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av)); |
be6c24e0 | 2902 | SV *sv; |
a0d0e21e | 2903 | |
e35c1634 | 2904 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
d804643f | 2905 | Perl_warner(aTHX_ WARN_MISC, "Use of reference \"%s\" as array index", SvPV_nolen(elemsv)); |
748a9306 | 2906 | if (elem > 0) |
3280af22 | 2907 | elem -= PL_curcop->cop_arybase; |
a0d0e21e LW |
2908 | if (SvTYPE(av) != SVt_PVAV) |
2909 | RETPUSHUNDEF; | |
68dc0745 | 2910 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2911 | if (lval) { |
3280af22 | 2912 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 2913 | SV* lv; |
2914 | if (!defer) | |
cea2e8a9 | 2915 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 2916 | lv = sv_newmortal(); |
2917 | sv_upgrade(lv, SVt_PVLV); | |
2918 | LvTYPE(lv) = 'y'; | |
14befaf4 | 2919 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 | 2920 | LvTARG(lv) = SvREFCNT_inc(av); |
2921 | LvTARGOFF(lv) = elem; | |
2922 | LvTARGLEN(lv) = 1; | |
2923 | PUSHs(lv); | |
2924 | RETURN; | |
2925 | } | |
533c011a | 2926 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 | 2927 | save_aelem(av, elem, svp); |
533c011a NIS |
2928 | else if (PL_op->op_private & OPpDEREF) |
2929 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 2930 | } |
3280af22 | 2931 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
2932 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2933 | sv = sv_mortalcopy(sv); | |
2934 | PUSHs(sv); | |
a0d0e21e LW |
2935 | RETURN; |
2936 | } | |
2937 | ||
02a9e968 | 2938 | void |
864dbfa3 | 2939 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 CS |
2940 | { |
2941 | if (SvGMAGICAL(sv)) | |
2942 | mg_get(sv); | |
2943 | if (!SvOK(sv)) { | |
2944 | if (SvREADONLY(sv)) | |
cea2e8a9 | 2945 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc | 2946 | if (SvTYPE(sv) < SVt_RV) |
2947 | sv_upgrade(sv, SVt_RV); | |
2948 | else if (SvTYPE(sv) >= SVt_PV) { | |
2949 | (void)SvOOK_off(sv); | |
2950 | Safefree(SvPVX(sv)); | |
2951 | SvLEN(sv) = SvCUR(sv) = 0; | |
2952 | } | |
68dc0745 | 2953 | switch (to_what) { |
5f05dabc | 2954 | case OPpDEREF_SV: |
8c52afec | 2955 | SvRV(sv) = NEWSV(355,0); |
5f05dabc | 2956 | break; |
2957 | case OPpDEREF_AV: | |
2958 | SvRV(sv) = (SV*)newAV(); | |
2959 | break; | |
2960 | case OPpDEREF_HV: | |
2961 | SvRV(sv) = (SV*)newHV(); | |
2962 | break; | |
2963 | } | |
02a9e968 CS |
2964 | SvROK_on(sv); |
2965 | SvSETMAGIC(sv); | |
2966 | } | |
2967 | } | |
2968 | ||
a0d0e21e LW |
2969 | PP(pp_method) |
2970 | { | |
39644a26 | 2971 | dSP; |
f5d5a27c CS |
2972 | SV* sv = TOPs; |
2973 | ||
2974 | if (SvROK(sv)) { | |
eda383f2 | 2975 | SV* rsv = SvRV(sv); |
f5d5a27c CS |
2976 | if (SvTYPE(rsv) == SVt_PVCV) { |
2977 | SETs(rsv); | |
2978 | RETURN; | |
2979 | } | |
2980 | } | |
2981 | ||
2982 | SETs(method_common(sv, Null(U32*))); | |
2983 | RETURN; | |
2984 | } | |
2985 | ||
2986 | PP(pp_method_named) | |
2987 | { | |
39644a26 | 2988 | dSP; |
f5d5a27c CS |
2989 | SV* sv = cSVOP->op_sv; |
2990 | U32 hash = SvUVX(sv); | |
2991 | ||
2992 | XPUSHs(method_common(sv, &hash)); | |
2993 | RETURN; | |
2994 | } | |
2995 | ||
2996 | STATIC SV * | |
2997 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
2998 | { | |
a0d0e21e LW |
2999 | SV* sv; |
3000 | SV* ob; | |
3001 | GV* gv; | |
56304f61 CS |
3002 | HV* stash; |
3003 | char* name; | |
f5d5a27c | 3004 | STRLEN namelen; |
9c5ffd7c | 3005 | char* packname = 0; |
ac91690f | 3006 | STRLEN packlen; |
a0d0e21e | 3007 | |
f5d5a27c | 3008 | name = SvPV(meth, namelen); |
3280af22 | 3009 | sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c | 3010 | |
4f1b7578 SC |
3011 | if (!sv) |
3012 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); | |
3013 | ||
16d20bd9 | 3014 | if (SvGMAGICAL(sv)) |
af09ea45 | 3015 | mg_get(sv); |
a0d0e21e | 3016 | if (SvROK(sv)) |
16d20bd9 | 3017 | ob = (SV*)SvRV(sv); |
a0d0e21e LW |
3018 | else { |
3019 | GV* iogv; | |
a0d0e21e | 3020 | |
af09ea45 | 3021 | /* this isn't a reference */ |
56304f61 | 3022 | packname = Nullch; |
a0d0e21e | 3023 | if (!SvOK(sv) || |
56304f61 | 3024 | !(packname = SvPV(sv, packlen)) || |
a0d0e21e LW |
3025 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
3026 | !(ob=(SV*)GvIO(iogv))) | |
3027 | { | |
af09ea45 | 3028 | /* this isn't the name of a filehandle either */ |
1c846c1f | 3029 | if (!packname || |
fd400ab9 | 3030 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 3031 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
3032 | : !isIDFIRST(*packname) |
3033 | )) | |
3034 | { | |
f5d5a27c CS |
3035 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
3036 | SvOK(sv) ? "without a package or object reference" | |
3037 | : "on an undefined value"); | |
834a4ddd | 3038 | } |
af09ea45 IK |
3039 | /* assume it's a package name */ |
3040 | stash = gv_stashpvn(packname, packlen, FALSE); | |
ac91690f | 3041 | goto fetch; |
a0d0e21e | 3042 | } |
af09ea45 | 3043 | /* it _is_ a filehandle name -- replace with a reference */ |
3280af22 | 3044 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e LW |
3045 | } |
3046 | ||
af09ea45 | 3047 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 GS |
3048 | if (!ob || !(SvOBJECT(ob) |
3049 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) | |
3050 | && SvOBJECT(ob)))) | |
3051 | { | |
f5d5a27c CS |
3052 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
3053 | name); | |
f0d43078 | 3054 | } |
a0d0e21e | 3055 | |
56304f61 | 3056 | stash = SvSTASH(ob); |
a0d0e21e | 3057 | |
ac91690f | 3058 | fetch: |
af09ea45 IK |
3059 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3060 | gv_fetchmethod can cope (it seems they can) */ | |
3061 | ||
f5d5a27c CS |
3062 | /* shortcut for simple names */ |
3063 | if (hashp) { | |
3064 | HE* he = hv_fetch_ent(stash, meth, 0, *hashp); | |
3065 | if (he) { | |
3066 | gv = (GV*)HeVAL(he); | |
3067 | if (isGV(gv) && GvCV(gv) && | |
3068 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) | |
3069 | return (SV*)GvCV(gv); | |
3070 | } | |
3071 | } | |
3072 | ||
ac91690f | 3073 | gv = gv_fetchmethod(stash, name); |
af09ea45 | 3074 | |
56304f61 | 3075 | if (!gv) { |
af09ea45 IK |
3076 | /* This code tries to figure out just what went wrong with |
3077 | gv_fetchmethod. It therefore needs to duplicate a lot of | |
3078 | the internals of that function. We can't move it inside | |
3079 | Perl_gv_fetchmethod_autoload(), however, since that would | |
3080 | cause UNIVERSAL->can("NoSuchPackage::foo") to croak, and we | |
3081 | don't want that. | |
3082 | */ | |
56304f61 CS |
3083 | char* leaf = name; |
3084 | char* sep = Nullch; | |
3085 | char* p; | |
3086 | ||
3087 | for (p = name; *p; p++) { | |
3088 | if (*p == '\'') | |
3089 | sep = p, leaf = p + 1; | |
3090 | else if (*p == ':' && *(p + 1) == ':') | |
3091 | sep = p, leaf = p + 2; | |
3092 | } | |
3093 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { | |
af09ea45 IK |
3094 | /* the method name is unqualified or starts with SUPER:: */ |
3095 | packname = sep ? CopSTASHPV(PL_curcop) : | |
3096 | stash ? HvNAME(stash) : packname; | |
56304f61 CS |
3097 | packlen = strlen(packname); |
3098 | } | |
3099 | else { | |
af09ea45 | 3100 | /* the method name is qualified */ |
56304f61 CS |
3101 | packname = name; |
3102 | packlen = sep - name; | |
3103 | } | |
af09ea45 IK |
3104 | |
3105 | /* we're relying on gv_fetchmethod not autovivifying the stash */ | |
3106 | if (gv_stashpvn(packname, packlen, FALSE)) { | |
c1899e02 | 3107 | Perl_croak(aTHX_ |
af09ea45 IK |
3108 | "Can't locate object method \"%s\" via package \"%.*s\"", |
3109 | leaf, (int)packlen, packname); | |
c1899e02 GS |
3110 | } |
3111 | else { | |
3112 | Perl_croak(aTHX_ | |
af09ea45 IK |
3113 | "Can't locate object method \"%s\" via package \"%.*s\"" |
3114 | " (perhaps you forgot to load \"%.*s\"?)", | |
3115 | leaf, (int)packlen, packname, (int)packlen, packname); | |
c1899e02 | 3116 | } |
56304f61 | 3117 | } |
f5d5a27c | 3118 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e | 3119 | } |
22239a37 | 3120 | |
4d1ff10f | 3121 | #ifdef USE_5005THREADS |
51371543 | 3122 | static void |
acfe0abc | 3123 | unset_cvowner(pTHX_ void *cvarg) |
51371543 GS |
3124 | { |
3125 | register CV* cv = (CV *) cvarg; | |
51371543 | 3126 | |
bf49b057 | 3127 | DEBUG_S((PerlIO_printf(Perl_debug_log, "%p unsetting CvOWNER of %p:%s\n", |
51371543 GS |
3128 | thr, cv, SvPEEK((SV*)cv)))); |
3129 | MUTEX_LOCK(CvMUTEXP(cv)); | |
3130 | DEBUG_S(if (CvDEPTH(cv) != 0) | |
bf49b057 | 3131 | PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", |
755b0776 | 3132 | CvDEPTH(cv))); |
51371543 GS |
3133 | assert(thr == CvOWNER(cv)); |
3134 | CvOWNER(cv) = 0; | |
3135 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
3136 | SvREFCNT_dec(cv); | |
3137 | } | |
4d1ff10f | 3138 | #endif /* USE_5005THREADS */ |