Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
be3c0a43 | 3 | * Copyright (c) 1991-2002, 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; |
6050d10e | 75 | sv_copypv(TARG,TOPs); |
a0d0e21e LW |
76 | SETTARG; |
77 | RETURN; | |
78 | } | |
79 | ||
80 | PP(pp_gv) | |
81 | { | |
39644a26 | 82 | dSP; |
1d7c1841 | 83 | XPUSHs((SV*)cGVOP_gv); |
a0d0e21e LW |
84 | RETURN; |
85 | } | |
86 | ||
87 | PP(pp_and) | |
88 | { | |
39644a26 | 89 | dSP; |
a0d0e21e LW |
90 | if (!SvTRUE(TOPs)) |
91 | RETURN; | |
92 | else { | |
93 | --SP; | |
94 | RETURNOP(cLOGOP->op_other); | |
95 | } | |
96 | } | |
97 | ||
98 | PP(pp_sassign) | |
99 | { | |
39644a26 | 100 | dSP; dPOPTOPssrl; |
748a9306 | 101 | |
533c011a | 102 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
a0d0e21e LW |
103 | SV *temp; |
104 | temp = left; left = right; right = temp; | |
105 | } | |
3280af22 | 106 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e | 107 | TAINT_NOT; |
54310121 | 108 | SvSetMagicSV(right, left); |
a0d0e21e LW |
109 | SETs(right); |
110 | RETURN; | |
111 | } | |
112 | ||
113 | PP(pp_cond_expr) | |
114 | { | |
39644a26 | 115 | dSP; |
a0d0e21e | 116 | if (SvTRUEx(POPs)) |
1a67a97c | 117 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 118 | else |
1a67a97c | 119 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
120 | } |
121 | ||
122 | PP(pp_unstack) | |
123 | { | |
124 | I32 oldsave; | |
125 | TAINT_NOT; /* Each statement is presumed innocent */ | |
3280af22 | 126 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 127 | FREETMPS; |
3280af22 | 128 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
129 | LEAVE_SCOPE(oldsave); |
130 | return NORMAL; | |
131 | } | |
132 | ||
a0d0e21e LW |
133 | PP(pp_concat) |
134 | { | |
39644a26 | 135 | dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 LW |
136 | { |
137 | dPOPTOPssrl; | |
8d6d96c1 HS |
138 | STRLEN llen; |
139 | char* lpv; | |
140 | bool lbyte; | |
141 | STRLEN rlen; | |
142 | char* rpv = SvPV(right, rlen); /* mg_get(right) happens here */ | |
143 | bool rbyte = !SvUTF8(right); | |
144 | ||
145 | if (TARG == right && right != left) { | |
146 | right = sv_2mortal(newSVpvn(rpv, rlen)); | |
147 | rpv = SvPV(right, rlen); /* no point setting UTF8 here */ | |
148 | } | |
7889fe52 | 149 | |
8d6d96c1 HS |
150 | if (TARG != left) { |
151 | lpv = SvPV(left, llen); /* mg_get(left) may happen here */ | |
152 | lbyte = !SvUTF8(left); | |
153 | sv_setpvn(TARG, lpv, llen); | |
154 | if (!lbyte) | |
155 | SvUTF8_on(TARG); | |
156 | else | |
157 | SvUTF8_off(TARG); | |
158 | } | |
159 | else { /* TARG == left */ | |
160 | if (SvGMAGICAL(left)) | |
161 | mg_get(left); /* or mg_get(left) may happen here */ | |
162 | if (!SvOK(TARG)) | |
163 | sv_setpv(left, ""); | |
164 | lpv = SvPV_nomg(left, llen); | |
165 | lbyte = !SvUTF8(left); | |
166 | } | |
a12c0f56 | 167 | |
fd15e783 PN |
168 | #if defined(PERL_Y2KWARN) |
169 | if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K) && SvOK(TARG)) { | |
8d6d96c1 HS |
170 | if (llen >= 2 && lpv[llen - 2] == '1' && lpv[llen - 1] == '9' |
171 | && (llen == 2 || !isDIGIT(lpv[llen - 3]))) | |
172 | { | |
9014280d | 173 | Perl_warner(aTHX_ packWARN(WARN_Y2K), "Possible Y2K bug: %s", |
8d6d96c1 HS |
174 | "about to append an integer to '19'"); |
175 | } | |
fd15e783 PN |
176 | } |
177 | #endif | |
178 | ||
8d6d96c1 HS |
179 | if (lbyte != rbyte) { |
180 | if (lbyte) | |
181 | sv_utf8_upgrade_nomg(TARG); | |
182 | else { | |
183 | sv_utf8_upgrade_nomg(right); | |
184 | rpv = SvPV(right, rlen); | |
69b47968 | 185 | } |
a0d0e21e | 186 | } |
8d6d96c1 | 187 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 188 | |
a0d0e21e LW |
189 | SETTARG; |
190 | RETURN; | |
748a9306 | 191 | } |
a0d0e21e LW |
192 | } |
193 | ||
194 | PP(pp_padsv) | |
195 | { | |
39644a26 | 196 | dSP; dTARGET; |
a0d0e21e | 197 | XPUSHs(TARG); |
533c011a NIS |
198 | if (PL_op->op_flags & OPf_MOD) { |
199 | if (PL_op->op_private & OPpLVAL_INTRO) | |
200 | SAVECLEARSV(PL_curpad[PL_op->op_targ]); | |
201 | else if (PL_op->op_private & OPpDEREF) { | |
8ec5e241 | 202 | PUTBACK; |
533c011a | 203 | vivify_ref(PL_curpad[PL_op->op_targ], PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
204 | SPAGAIN; |
205 | } | |
4633a7c4 | 206 | } |
a0d0e21e LW |
207 | RETURN; |
208 | } | |
209 | ||
210 | PP(pp_readline) | |
211 | { | |
f5284f61 | 212 | tryAMAGICunTARGET(iter, 0); |
3280af22 | 213 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 | 214 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f | 215 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 | 216 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 | 217 | else { |
f5284f61 IZ |
218 | dSP; |
219 | XPUSHs((SV*)PL_last_in_gv); | |
220 | PUTBACK; | |
cea2e8a9 | 221 | pp_rv2gv(); |
f5284f61 | 222 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 IZ |
223 | } |
224 | } | |
a0d0e21e LW |
225 | return do_readline(); |
226 | } | |
227 | ||
228 | PP(pp_eq) | |
229 | { | |
39644a26 | 230 | dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f AS |
231 | #ifndef NV_PRESERVES_UV |
232 | if (SvROK(TOPs) && SvROK(TOPm1s)) { | |
e61d22ef NC |
233 | SP--; |
234 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); | |
4c9fe80f AS |
235 | RETURN; |
236 | } | |
237 | #endif | |
28e5dec8 JH |
238 | #ifdef PERL_PRESERVE_IVUV |
239 | SvIV_please(TOPs); | |
240 | if (SvIOK(TOPs)) { | |
4c9fe80f AS |
241 | /* Unless the left argument is integer in range we are going |
242 | to have to use NV maths. Hence only attempt to coerce the | |
243 | right argument if we know the left is integer. */ | |
28e5dec8 JH |
244 | SvIV_please(TOPm1s); |
245 | if (SvIOK(TOPm1s)) { | |
246 | bool auvok = SvUOK(TOPm1s); | |
247 | bool buvok = SvUOK(TOPs); | |
a12c0f56 | 248 | |
1605159e NC |
249 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
250 | /* Casting IV to UV before comparison isn't going to matter | |
251 | on 2s complement. On 1s complement or sign&magnitude | |
252 | (if we have any of them) it could to make negative zero | |
253 | differ from normal zero. As I understand it. (Need to | |
254 | check - is negative zero implementation defined behaviour | |
255 | anyway?). NWC */ | |
256 | UV buv = SvUVX(POPs); | |
257 | UV auv = SvUVX(TOPs); | |
28e5dec8 | 258 | |
28e5dec8 JH |
259 | SETs(boolSV(auv == buv)); |
260 | RETURN; | |
261 | } | |
262 | { /* ## Mixed IV,UV ## */ | |
1605159e | 263 | SV *ivp, *uvp; |
28e5dec8 | 264 | IV iv; |
28e5dec8 | 265 | |
1605159e | 266 | /* == is commutative so doesn't matter which is left or right */ |
28e5dec8 | 267 | if (auvok) { |
1605159e NC |
268 | /* top of stack (b) is the iv */ |
269 | ivp = *SP; | |
270 | uvp = *--SP; | |
271 | } else { | |
272 | uvp = *SP; | |
273 | ivp = *--SP; | |
274 | } | |
275 | iv = SvIVX(ivp); | |
276 | if (iv < 0) { | |
277 | /* As uv is a UV, it's >0, so it cannot be == */ | |
278 | SETs(&PL_sv_no); | |
279 | RETURN; | |
280 | } | |
28e5dec8 | 281 | /* we know iv is >= 0 */ |
1605159e | 282 | SETs(boolSV((UV)iv == SvUVX(uvp))); |
28e5dec8 JH |
283 | RETURN; |
284 | } | |
285 | } | |
286 | } | |
287 | #endif | |
a0d0e21e LW |
288 | { |
289 | dPOPnv; | |
54310121 | 290 | SETs(boolSV(TOPn == value)); |
a0d0e21e LW |
291 | RETURN; |
292 | } | |
293 | } | |
294 | ||
295 | PP(pp_preinc) | |
296 | { | |
39644a26 | 297 | dSP; |
3510b4a1 | 298 | if (SvTYPE(TOPs) > SVt_PVLV) |
d470f89e | 299 | DIE(aTHX_ PL_no_modify); |
3510b4a1 NC |
300 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
301 | && SvIVX(TOPs) != IV_MAX) | |
55497cff | 302 | { |
748a9306 | 303 | ++SvIVX(TOPs); |
55497cff | 304 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 305 | } |
28e5dec8 | 306 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 | 307 | sv_inc(TOPs); |
a0d0e21e LW |
308 | SvSETMAGIC(TOPs); |
309 | return NORMAL; | |
310 | } | |
311 | ||
312 | PP(pp_or) | |
313 | { | |
39644a26 | 314 | dSP; |
a0d0e21e LW |
315 | if (SvTRUE(TOPs)) |
316 | RETURN; | |
317 | else { | |
318 | --SP; | |
319 | RETURNOP(cLOGOP->op_other); | |
320 | } | |
321 | } | |
322 | ||
323 | PP(pp_add) | |
324 | { | |
39644a26 | 325 | dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 JH |
326 | useleft = USE_LEFT(TOPm1s); |
327 | #ifdef PERL_PRESERVE_IVUV | |
328 | /* We must see if we can perform the addition with integers if possible, | |
329 | as the integer code detects overflow while the NV code doesn't. | |
330 | If either argument hasn't had a numeric conversion yet attempt to get | |
331 | the IV. It's important to do this now, rather than just assuming that | |
332 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
333 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
334 | integer in case the second argument is IV=9223372036854775806 | |
335 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
336 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
337 | ||
338 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
339 | fp maths for integer values. |
340 | ||
a00b5bd3 | 341 | How to detect overflow? |
7dca457a NC |
342 | |
343 | C 99 section 6.2.6.1 says | |
344 | ||
345 | The range of nonnegative values of a signed integer type is a subrange | |
346 | of the corresponding unsigned integer type, and the representation of | |
347 | the same value in each type is the same. A computation involving | |
348 | unsigned operands can never overflow, because a result that cannot be | |
349 | represented by the resulting unsigned integer type is reduced modulo | |
350 | the number that is one greater than the largest value that can be | |
351 | represented by the resulting type. | |
352 | ||
353 | (the 9th paragraph) | |
354 | ||
355 | which I read as "unsigned ints wrap." | |
356 | ||
357 | signed integer overflow seems to be classed as "exception condition" | |
358 | ||
359 | If an exceptional condition occurs during the evaluation of an | |
360 | expression (that is, if the result is not mathematically defined or not | |
361 | in the range of representable values for its type), the behavior is | |
362 | undefined. | |
363 | ||
364 | (6.5, the 5th paragraph) | |
365 | ||
366 | I had assumed that on 2s complement machines signed arithmetic would | |
367 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
368 | everything perl builds on would be happy. After much wailing and | |
369 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
370 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
371 | unsigned code below is actually shorter than the old code. :-) | |
372 | */ | |
373 | ||
28e5dec8 JH |
374 | SvIV_please(TOPs); |
375 | if (SvIOK(TOPs)) { | |
376 | /* Unless the left argument is integer in range we are going to have to | |
377 | use NV maths. Hence only attempt to coerce the right argument if | |
378 | we know the left is integer. */ | |
9c5ffd7c JH |
379 | register UV auv = 0; |
380 | bool auvok = FALSE; | |
7dca457a NC |
381 | bool a_valid = 0; |
382 | ||
28e5dec8 | 383 | if (!useleft) { |
7dca457a NC |
384 | auv = 0; |
385 | a_valid = auvok = 1; | |
386 | /* left operand is undef, treat as zero. + 0 is identity, | |
387 | Could SETi or SETu right now, but space optimise by not adding | |
388 | lots of code to speed up what is probably a rarish case. */ | |
389 | } else { | |
390 | /* Left operand is defined, so is it IV? */ | |
391 | SvIV_please(TOPm1s); | |
392 | if (SvIOK(TOPm1s)) { | |
393 | if ((auvok = SvUOK(TOPm1s))) | |
394 | auv = SvUVX(TOPm1s); | |
395 | else { | |
396 | register IV aiv = SvIVX(TOPm1s); | |
397 | if (aiv >= 0) { | |
398 | auv = aiv; | |
399 | auvok = 1; /* Now acting as a sign flag. */ | |
400 | } else { /* 2s complement assumption for IV_MIN */ | |
401 | auv = (UV)-aiv; | |
402 | } | |
403 | } | |
404 | a_valid = 1; | |
28e5dec8 JH |
405 | } |
406 | } | |
7dca457a NC |
407 | if (a_valid) { |
408 | bool result_good = 0; | |
409 | UV result; | |
410 | register UV buv; | |
28e5dec8 | 411 | bool buvok = SvUOK(TOPs); |
a00b5bd3 | 412 | |
7dca457a NC |
413 | if (buvok) |
414 | buv = SvUVX(TOPs); | |
415 | else { | |
416 | register IV biv = SvIVX(TOPs); | |
417 | if (biv >= 0) { | |
418 | buv = biv; | |
419 | buvok = 1; | |
420 | } else | |
421 | buv = (UV)-biv; | |
422 | } | |
423 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 424 | else "IV" now, independent of how it came in. |
7dca457a NC |
425 | if a, b represents positive, A, B negative, a maps to -A etc |
426 | a + b => (a + b) | |
427 | A + b => -(a - b) | |
428 | a + B => (a - b) | |
429 | A + B => -(a + b) | |
430 | all UV maths. negate result if A negative. | |
431 | add if signs same, subtract if signs differ. */ | |
432 | ||
433 | if (auvok ^ buvok) { | |
434 | /* Signs differ. */ | |
435 | if (auv >= buv) { | |
436 | result = auv - buv; | |
437 | /* Must get smaller */ | |
438 | if (result <= auv) | |
439 | result_good = 1; | |
440 | } else { | |
441 | result = buv - auv; | |
442 | if (result <= buv) { | |
443 | /* result really should be -(auv-buv). as its negation | |
444 | of true value, need to swap our result flag */ | |
445 | auvok = !auvok; | |
446 | result_good = 1; | |
28e5dec8 JH |
447 | } |
448 | } | |
7dca457a NC |
449 | } else { |
450 | /* Signs same */ | |
451 | result = auv + buv; | |
452 | if (result >= auv) | |
453 | result_good = 1; | |
454 | } | |
455 | if (result_good) { | |
456 | SP--; | |
457 | if (auvok) | |
28e5dec8 | 458 | SETu( result ); |
7dca457a NC |
459 | else { |
460 | /* Negate result */ | |
461 | if (result <= (UV)IV_MIN) | |
462 | SETi( -(IV)result ); | |
463 | else { | |
464 | /* result valid, but out of range for IV. */ | |
465 | SETn( -(NV)result ); | |
28e5dec8 JH |
466 | } |
467 | } | |
7dca457a NC |
468 | RETURN; |
469 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
470 | } |
471 | } | |
472 | #endif | |
a0d0e21e | 473 | { |
28e5dec8 JH |
474 | dPOPnv; |
475 | if (!useleft) { | |
476 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
477 | SETn(value); | |
478 | RETURN; | |
479 | } | |
480 | SETn( value + TOPn ); | |
481 | RETURN; | |
a0d0e21e LW |
482 | } |
483 | } | |
484 | ||
485 | PP(pp_aelemfast) | |
486 | { | |
39644a26 | 487 | dSP; |
1d7c1841 | 488 | AV *av = GvAV(cGVOP_gv); |
533c011a NIS |
489 | U32 lval = PL_op->op_flags & OPf_MOD; |
490 | SV** svp = av_fetch(av, PL_op->op_private, lval); | |
3280af22 | 491 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 492 | EXTEND(SP, 1); |
be6c24e0 GS |
493 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
494 | sv = sv_mortalcopy(sv); | |
495 | PUSHs(sv); | |
a0d0e21e LW |
496 | RETURN; |
497 | } | |
498 | ||
499 | PP(pp_join) | |
500 | { | |
39644a26 | 501 | dSP; dMARK; dTARGET; |
a0d0e21e LW |
502 | MARK++; |
503 | do_join(TARG, *MARK, MARK, SP); | |
504 | SP = MARK; | |
505 | SETs(TARG); | |
506 | RETURN; | |
507 | } | |
508 | ||
509 | PP(pp_pushre) | |
510 | { | |
39644a26 | 511 | dSP; |
44a8e56a | 512 | #ifdef DEBUGGING |
513 | /* | |
514 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
515 | * will be enough to hold an OP*. | |
516 | */ | |
517 | SV* sv = sv_newmortal(); | |
518 | sv_upgrade(sv, SVt_PVLV); | |
519 | LvTYPE(sv) = '/'; | |
533c011a | 520 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 521 | XPUSHs(sv); |
522 | #else | |
6b88bc9c | 523 | XPUSHs((SV*)PL_op); |
44a8e56a | 524 | #endif |
a0d0e21e LW |
525 | RETURN; |
526 | } | |
527 | ||
528 | /* Oversized hot code. */ | |
529 | ||
530 | PP(pp_print) | |
531 | { | |
39644a26 | 532 | dSP; dMARK; dORIGMARK; |
a0d0e21e LW |
533 | GV *gv; |
534 | IO *io; | |
760ac839 | 535 | register PerlIO *fp; |
236988e4 | 536 | MAGIC *mg; |
a0d0e21e | 537 | |
533c011a | 538 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
539 | gv = (GV*)*++MARK; |
540 | else | |
3280af22 | 541 | gv = PL_defoutgv; |
5b468f54 AMS |
542 | |
543 | if (gv && (io = GvIO(gv)) | |
544 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
545 | { | |
01bb7c6d | 546 | had_magic: |
68dc0745 | 547 | if (MARK == ORIGMARK) { |
1c846c1f | 548 | /* If using default handle then we need to make space to |
a60c0954 NIS |
549 | * pass object as 1st arg, so move other args up ... |
550 | */ | |
4352c267 | 551 | MEXTEND(SP, 1); |
68dc0745 | 552 | ++MARK; |
553 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
554 | ++SP; | |
555 | } | |
556 | PUSHMARK(MARK - 1); | |
5b468f54 | 557 | *MARK = SvTIED_obj((SV*)io, mg); |
68dc0745 | 558 | PUTBACK; |
236988e4 | 559 | ENTER; |
864dbfa3 | 560 | call_method("PRINT", G_SCALAR); |
236988e4 | 561 | LEAVE; |
562 | SPAGAIN; | |
68dc0745 | 563 | MARK = ORIGMARK + 1; |
564 | *MARK = *SP; | |
565 | SP = MARK; | |
236988e4 | 566 | RETURN; |
567 | } | |
a0d0e21e | 568 | if (!(io = GvIO(gv))) { |
5b468f54 AMS |
569 | if ((GvEGV(gv)) && (io = GvIO(GvEGV(gv))) |
570 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
01bb7c6d | 571 | goto had_magic; |
2dd78f96 JH |
572 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
573 | report_evil_fh(gv, io, PL_op->op_type); | |
91487cfc | 574 | SETERRNO(EBADF,RMS$_IFI); |
a0d0e21e LW |
575 | goto just_say_no; |
576 | } | |
577 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 578 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 NC |
579 | if (IoIFP(io)) |
580 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); | |
2dd78f96 | 581 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f | 582 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e | 583 | } |
91487cfc | 584 | SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI); |
a0d0e21e LW |
585 | goto just_say_no; |
586 | } | |
587 | else { | |
588 | MARK++; | |
7889fe52 | 589 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e LW |
590 | while (MARK <= SP) { |
591 | if (!do_print(*MARK, fp)) | |
592 | break; | |
593 | MARK++; | |
594 | if (MARK <= SP) { | |
7889fe52 | 595 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e LW |
596 | MARK--; |
597 | break; | |
598 | } | |
599 | } | |
600 | } | |
601 | } | |
602 | else { | |
603 | while (MARK <= SP) { | |
604 | if (!do_print(*MARK, fp)) | |
605 | break; | |
606 | MARK++; | |
607 | } | |
608 | } | |
609 | if (MARK <= SP) | |
610 | goto just_say_no; | |
611 | else { | |
7889fe52 NIS |
612 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
613 | if (!do_print(PL_ors_sv, fp)) /* $\ */ | |
a0d0e21e LW |
614 | goto just_say_no; |
615 | ||
616 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 617 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
618 | goto just_say_no; |
619 | } | |
620 | } | |
621 | SP = ORIGMARK; | |
3280af22 | 622 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
623 | RETURN; |
624 | ||
625 | just_say_no: | |
626 | SP = ORIGMARK; | |
3280af22 | 627 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
628 | RETURN; |
629 | } | |
630 | ||
631 | PP(pp_rv2av) | |
632 | { | |
39644a26 | 633 | dSP; dTOPss; |
a0d0e21e LW |
634 | AV *av; |
635 | ||
636 | if (SvROK(sv)) { | |
637 | wasref: | |
f5284f61 IZ |
638 | tryAMAGICunDEREF(to_av); |
639 | ||
a0d0e21e LW |
640 | av = (AV*)SvRV(sv); |
641 | if (SvTYPE(av) != SVt_PVAV) | |
cea2e8a9 | 642 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a | 643 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 644 | SETs((SV*)av); |
a0d0e21e LW |
645 | RETURN; |
646 | } | |
78f9721b SM |
647 | else if (LVRET) { |
648 | if (GIMME == G_SCALAR) | |
649 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); | |
650 | SETs((SV*)av); | |
651 | RETURN; | |
652 | } | |
a0d0e21e LW |
653 | } |
654 | else { | |
655 | if (SvTYPE(sv) == SVt_PVAV) { | |
656 | av = (AV*)sv; | |
533c011a | 657 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 658 | SETs((SV*)av); |
a0d0e21e LW |
659 | RETURN; |
660 | } | |
78f9721b SM |
661 | else if (LVRET) { |
662 | if (GIMME == G_SCALAR) | |
663 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
664 | " scalar context"); | |
665 | SETs((SV*)av); | |
666 | RETURN; | |
667 | } | |
a0d0e21e LW |
668 | } |
669 | else { | |
67955e0c | 670 | GV *gv; |
1c846c1f | 671 | |
a0d0e21e | 672 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 673 | char *sym; |
c9d5ac95 | 674 | STRLEN len; |
748a9306 | 675 | |
a0d0e21e LW |
676 | if (SvGMAGICAL(sv)) { |
677 | mg_get(sv); | |
678 | if (SvROK(sv)) | |
679 | goto wasref; | |
680 | } | |
681 | if (!SvOK(sv)) { | |
533c011a NIS |
682 | if (PL_op->op_flags & OPf_REF || |
683 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 684 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 | 685 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 686 | report_uninit(); |
f5284f61 | 687 | if (GIMME == G_ARRAY) { |
c2444246 | 688 | (void)POPs; |
4633a7c4 | 689 | RETURN; |
f5284f61 IZ |
690 | } |
691 | RETSETUNDEF; | |
a0d0e21e | 692 | } |
c9d5ac95 | 693 | sym = SvPV(sv,len); |
35cd451c GS |
694 | if ((PL_op->op_flags & OPf_SPECIAL) && |
695 | !(PL_op->op_flags & OPf_MOD)) | |
696 | { | |
697 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV); | |
c9d5ac95 GS |
698 | if (!gv |
699 | && (!is_gv_magical(sym,len,0) | |
700 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV)))) | |
701 | { | |
35cd451c | 702 | RETSETUNDEF; |
c9d5ac95 | 703 | } |
35cd451c GS |
704 | } |
705 | else { | |
706 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 707 | DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); |
35cd451c GS |
708 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
709 | } | |
710 | } | |
711 | else { | |
67955e0c | 712 | gv = (GV*)sv; |
a0d0e21e | 713 | } |
67955e0c | 714 | av = GvAVn(gv); |
533c011a | 715 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 716 | av = save_ary(gv); |
533c011a | 717 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 718 | SETs((SV*)av); |
a0d0e21e LW |
719 | RETURN; |
720 | } | |
78f9721b SM |
721 | else if (LVRET) { |
722 | if (GIMME == G_SCALAR) | |
723 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
724 | " scalar context"); | |
725 | SETs((SV*)av); | |
726 | RETURN; | |
727 | } | |
a0d0e21e LW |
728 | } |
729 | } | |
730 | ||
731 | if (GIMME == G_ARRAY) { | |
732 | I32 maxarg = AvFILL(av) + 1; | |
c2444246 | 733 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f | 734 | EXTEND(SP, maxarg); |
93965878 | 735 | if (SvRMAGICAL(av)) { |
1c846c1f | 736 | U32 i; |
eb160463 | 737 | for (i=0; i < (U32)maxarg; i++) { |
93965878 | 738 | SV **svp = av_fetch(av, i, FALSE); |
3280af22 | 739 | SP[i+1] = (svp) ? *svp : &PL_sv_undef; |
93965878 | 740 | } |
1c846c1f | 741 | } |
93965878 NIS |
742 | else { |
743 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
744 | } | |
a0d0e21e LW |
745 | SP += maxarg; |
746 | } | |
747 | else { | |
748 | dTARGET; | |
749 | I32 maxarg = AvFILL(av) + 1; | |
f5284f61 | 750 | SETi(maxarg); |
a0d0e21e LW |
751 | } |
752 | RETURN; | |
753 | } | |
754 | ||
755 | PP(pp_rv2hv) | |
756 | { | |
39644a26 | 757 | dSP; dTOPss; |
a0d0e21e LW |
758 | HV *hv; |
759 | ||
760 | if (SvROK(sv)) { | |
761 | wasref: | |
f5284f61 IZ |
762 | tryAMAGICunDEREF(to_hv); |
763 | ||
a0d0e21e | 764 | hv = (HV*)SvRV(sv); |
c750a3ec | 765 | if (SvTYPE(hv) != SVt_PVHV && SvTYPE(hv) != SVt_PVAV) |
cea2e8a9 | 766 | DIE(aTHX_ "Not a HASH reference"); |
533c011a | 767 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
768 | SETs((SV*)hv); |
769 | RETURN; | |
770 | } | |
78f9721b SM |
771 | else if (LVRET) { |
772 | if (GIMME == G_SCALAR) | |
773 | Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); | |
774 | SETs((SV*)hv); | |
775 | RETURN; | |
776 | } | |
a0d0e21e LW |
777 | } |
778 | else { | |
c750a3ec | 779 | if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) { |
a0d0e21e | 780 | hv = (HV*)sv; |
533c011a | 781 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
782 | SETs((SV*)hv); |
783 | RETURN; | |
784 | } | |
78f9721b SM |
785 | else if (LVRET) { |
786 | if (GIMME == G_SCALAR) | |
787 | Perl_croak(aTHX_ "Can't return hash to lvalue" | |
788 | " scalar context"); | |
789 | SETs((SV*)hv); | |
790 | RETURN; | |
791 | } | |
a0d0e21e LW |
792 | } |
793 | else { | |
67955e0c | 794 | GV *gv; |
1c846c1f | 795 | |
a0d0e21e | 796 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 797 | char *sym; |
c9d5ac95 | 798 | STRLEN len; |
748a9306 | 799 | |
a0d0e21e LW |
800 | if (SvGMAGICAL(sv)) { |
801 | mg_get(sv); | |
802 | if (SvROK(sv)) | |
803 | goto wasref; | |
804 | } | |
805 | if (!SvOK(sv)) { | |
533c011a NIS |
806 | if (PL_op->op_flags & OPf_REF || |
807 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 808 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 | 809 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 810 | report_uninit(); |
4633a7c4 LW |
811 | if (GIMME == G_ARRAY) { |
812 | SP--; | |
813 | RETURN; | |
814 | } | |
a0d0e21e LW |
815 | RETSETUNDEF; |
816 | } | |
c9d5ac95 | 817 | sym = SvPV(sv,len); |
35cd451c GS |
818 | if ((PL_op->op_flags & OPf_SPECIAL) && |
819 | !(PL_op->op_flags & OPf_MOD)) | |
820 | { | |
821 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV); | |
c9d5ac95 GS |
822 | if (!gv |
823 | && (!is_gv_magical(sym,len,0) | |
824 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV)))) | |
825 | { | |
35cd451c | 826 | RETSETUNDEF; |
c9d5ac95 | 827 | } |
35cd451c GS |
828 | } |
829 | else { | |
830 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 831 | DIE(aTHX_ PL_no_symref, sym, "a HASH"); |
35cd451c GS |
832 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
833 | } | |
834 | } | |
835 | else { | |
67955e0c | 836 | gv = (GV*)sv; |
a0d0e21e | 837 | } |
67955e0c | 838 | hv = GvHVn(gv); |
533c011a | 839 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 840 | hv = save_hash(gv); |
533c011a | 841 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
842 | SETs((SV*)hv); |
843 | RETURN; | |
844 | } | |
78f9721b SM |
845 | else if (LVRET) { |
846 | if (GIMME == G_SCALAR) | |
847 | Perl_croak(aTHX_ "Can't return hash to lvalue" | |
848 | " scalar context"); | |
849 | SETs((SV*)hv); | |
850 | RETURN; | |
851 | } | |
a0d0e21e LW |
852 | } |
853 | } | |
854 | ||
855 | if (GIMME == G_ARRAY) { /* array wanted */ | |
3280af22 | 856 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 | 857 | return do_kv(); |
a0d0e21e LW |
858 | } |
859 | else { | |
860 | dTARGET; | |
4b154ab5 GA |
861 | if (SvTYPE(hv) == SVt_PVAV) |
862 | hv = avhv_keys((AV*)hv); | |
b9c39e73 | 863 | if (HvFILL(hv)) |
57def98f JH |
864 | Perl_sv_setpvf(aTHX_ TARG, "%"IVdf"/%"IVdf, |
865 | (IV)HvFILL(hv), (IV)HvMAX(hv) + 1); | |
a0d0e21e LW |
866 | else |
867 | sv_setiv(TARG, 0); | |
c750a3ec | 868 | |
a0d0e21e LW |
869 | SETTARG; |
870 | RETURN; | |
871 | } | |
872 | } | |
873 | ||
10c8fecd GS |
874 | STATIC int |
875 | S_do_maybe_phash(pTHX_ AV *ary, SV **lelem, SV **firstlelem, SV **relem, | |
876 | SV **lastrelem) | |
877 | { | |
878 | OP *leftop; | |
10c8fecd GS |
879 | I32 i; |
880 | ||
881 | leftop = ((BINOP*)PL_op)->op_last; | |
882 | assert(leftop); | |
883 | assert(leftop->op_type == OP_NULL && leftop->op_targ == OP_LIST); | |
884 | leftop = ((LISTOP*)leftop)->op_first; | |
885 | assert(leftop); | |
886 | /* Skip PUSHMARK and each element already assigned to. */ | |
887 | for (i = lelem - firstlelem; i > 0; i--) { | |
888 | leftop = leftop->op_sibling; | |
889 | assert(leftop); | |
890 | } | |
891 | if (leftop->op_type != OP_RV2HV) | |
892 | return 0; | |
893 | ||
894 | /* pseudohash */ | |
895 | if (av_len(ary) > 0) | |
896 | av_fill(ary, 0); /* clear all but the fields hash */ | |
897 | if (lastrelem >= relem) { | |
898 | while (relem < lastrelem) { /* gobble up all the rest */ | |
899 | SV *tmpstr; | |
900 | assert(relem[0]); | |
901 | assert(relem[1]); | |
902 | /* Avoid a memory leak when avhv_store_ent dies. */ | |
903 | tmpstr = sv_newmortal(); | |
904 | sv_setsv(tmpstr,relem[1]); /* value */ | |
905 | relem[1] = tmpstr; | |
906 | if (avhv_store_ent(ary,relem[0],tmpstr,0)) | |
d16e9ed9 | 907 | (void)SvREFCNT_inc(tmpstr); |
10c8fecd GS |
908 | if (SvMAGICAL(ary) != 0 && SvSMAGICAL(tmpstr)) |
909 | mg_set(tmpstr); | |
910 | relem += 2; | |
911 | TAINT_NOT; | |
912 | } | |
913 | } | |
914 | if (relem == lastrelem) | |
915 | return 1; | |
916 | return 2; | |
917 | } | |
918 | ||
919 | STATIC void | |
920 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
921 | { | |
922 | if (*relem) { | |
923 | SV *tmpstr; | |
924 | if (ckWARN(WARN_MISC)) { | |
925 | if (relem == firstrelem && | |
926 | SvROK(*relem) && | |
927 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
928 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
929 | { | |
9014280d | 930 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd GS |
931 | "Reference found where even-sized list expected"); |
932 | } | |
933 | else | |
9014280d | 934 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd GS |
935 | "Odd number of elements in hash assignment"); |
936 | } | |
937 | if (SvTYPE(hash) == SVt_PVAV) { | |
938 | /* pseudohash */ | |
939 | tmpstr = sv_newmortal(); | |
940 | if (avhv_store_ent((AV*)hash,*relem,tmpstr,0)) | |
d16e9ed9 | 941 | (void)SvREFCNT_inc(tmpstr); |
10c8fecd GS |
942 | if (SvMAGICAL(hash) && SvSMAGICAL(tmpstr)) |
943 | mg_set(tmpstr); | |
944 | } | |
945 | else { | |
946 | HE *didstore; | |
947 | tmpstr = NEWSV(29,0); | |
948 | didstore = hv_store_ent(hash,*relem,tmpstr,0); | |
949 | if (SvMAGICAL(hash)) { | |
950 | if (SvSMAGICAL(tmpstr)) | |
951 | mg_set(tmpstr); | |
952 | if (!didstore) | |
953 | sv_2mortal(tmpstr); | |
954 | } | |
955 | } | |
956 | TAINT_NOT; | |
957 | } | |
958 | } | |
959 | ||
a0d0e21e LW |
960 | PP(pp_aassign) |
961 | { | |
39644a26 | 962 | dSP; |
3280af22 NIS |
963 | SV **lastlelem = PL_stack_sp; |
964 | SV **lastrelem = PL_stack_base + POPMARK; | |
965 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
966 | SV **firstlelem = lastrelem + 1; |
967 | ||
968 | register SV **relem; | |
969 | register SV **lelem; | |
970 | ||
971 | register SV *sv; | |
972 | register AV *ary; | |
973 | ||
54310121 | 974 | I32 gimme; |
a0d0e21e LW |
975 | HV *hash; |
976 | I32 i; | |
977 | int magic; | |
978 | ||
3280af22 | 979 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
a0d0e21e LW |
980 | |
981 | /* If there's a common identifier on both sides we have to take | |
982 | * special care that assigning the identifier on the left doesn't | |
983 | * clobber a value on the right that's used later in the list. | |
984 | */ | |
10c8fecd | 985 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 | 986 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd GS |
987 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
988 | /*SUPPRESS 560*/ | |
155aba94 | 989 | if ((sv = *relem)) { |
a1f49e72 | 990 | TAINT_NOT; /* Each item is independent */ |
10c8fecd | 991 | *relem = sv_mortalcopy(sv); |
a1f49e72 | 992 | } |
10c8fecd | 993 | } |
a0d0e21e LW |
994 | } |
995 | ||
996 | relem = firstrelem; | |
997 | lelem = firstlelem; | |
998 | ary = Null(AV*); | |
999 | hash = Null(HV*); | |
10c8fecd | 1000 | |
a0d0e21e | 1001 | while (lelem <= lastlelem) { |
bbce6d69 | 1002 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
1003 | sv = *lelem++; |
1004 | switch (SvTYPE(sv)) { | |
1005 | case SVt_PVAV: | |
1006 | ary = (AV*)sv; | |
748a9306 | 1007 | magic = SvMAGICAL(ary) != 0; |
10c8fecd GS |
1008 | if (PL_op->op_private & OPpASSIGN_HASH) { |
1009 | switch (do_maybe_phash(ary, lelem, firstlelem, relem, | |
1010 | lastrelem)) | |
1011 | { | |
1012 | case 0: | |
1013 | goto normal_array; | |
1014 | case 1: | |
1015 | do_oddball((HV*)ary, relem, firstrelem); | |
1016 | } | |
1017 | relem = lastrelem + 1; | |
1018 | break; | |
1019 | } | |
1020 | normal_array: | |
a0d0e21e | 1021 | av_clear(ary); |
7e42bd57 | 1022 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1023 | i = 0; |
1024 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1025 | SV **didstore; |
a0d0e21e LW |
1026 | sv = NEWSV(28,0); |
1027 | assert(*relem); | |
1028 | sv_setsv(sv,*relem); | |
1029 | *(relem++) = sv; | |
5117ca91 GS |
1030 | didstore = av_store(ary,i++,sv); |
1031 | if (magic) { | |
fb73857a | 1032 | if (SvSMAGICAL(sv)) |
1033 | mg_set(sv); | |
5117ca91 | 1034 | if (!didstore) |
8127e0e3 | 1035 | sv_2mortal(sv); |
5117ca91 | 1036 | } |
bbce6d69 | 1037 | TAINT_NOT; |
a0d0e21e LW |
1038 | } |
1039 | break; | |
10c8fecd | 1040 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e LW |
1041 | SV *tmpstr; |
1042 | ||
1043 | hash = (HV*)sv; | |
748a9306 | 1044 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e LW |
1045 | hv_clear(hash); |
1046 | ||
1047 | while (relem < lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1048 | HE *didstore; |
4633a7c4 | 1049 | if (*relem) |
a0d0e21e | 1050 | sv = *(relem++); |
4633a7c4 | 1051 | else |
3280af22 | 1052 | sv = &PL_sv_no, relem++; |
a0d0e21e LW |
1053 | tmpstr = NEWSV(29,0); |
1054 | if (*relem) | |
1055 | sv_setsv(tmpstr,*relem); /* value */ | |
1056 | *(relem++) = tmpstr; | |
5117ca91 GS |
1057 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1058 | if (magic) { | |
fb73857a | 1059 | if (SvSMAGICAL(tmpstr)) |
1060 | mg_set(tmpstr); | |
5117ca91 | 1061 | if (!didstore) |
8127e0e3 | 1062 | sv_2mortal(tmpstr); |
5117ca91 | 1063 | } |
bbce6d69 | 1064 | TAINT_NOT; |
8e07c86e | 1065 | } |
6a0deba8 | 1066 | if (relem == lastrelem) { |
10c8fecd | 1067 | do_oddball(hash, relem, firstrelem); |
6a0deba8 | 1068 | relem++; |
1930e939 | 1069 | } |
a0d0e21e LW |
1070 | } |
1071 | break; | |
1072 | default: | |
6fc92669 GS |
1073 | if (SvIMMORTAL(sv)) { |
1074 | if (relem <= lastrelem) | |
1075 | relem++; | |
1076 | break; | |
a0d0e21e LW |
1077 | } |
1078 | if (relem <= lastrelem) { | |
1079 | sv_setsv(sv, *relem); | |
1080 | *(relem++) = sv; | |
1081 | } | |
1082 | else | |
3280af22 | 1083 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e LW |
1084 | SvSETMAGIC(sv); |
1085 | break; | |
1086 | } | |
1087 | } | |
3280af22 NIS |
1088 | if (PL_delaymagic & ~DM_DELAY) { |
1089 | if (PL_delaymagic & DM_UID) { | |
a0d0e21e | 1090 | #ifdef HAS_SETRESUID |
b28d0864 | 1091 | (void)setresuid(PL_uid,PL_euid,(Uid_t)-1); |
56febc5e AD |
1092 | #else |
1093 | # ifdef HAS_SETREUID | |
3280af22 | 1094 | (void)setreuid(PL_uid,PL_euid); |
56febc5e AD |
1095 | # else |
1096 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
1097 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1098 | (void)setruid(PL_uid); | |
1099 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 1100 | } |
56febc5e AD |
1101 | # endif /* HAS_SETRUID */ |
1102 | # ifdef HAS_SETEUID | |
b28d0864 NIS |
1103 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
1104 | (void)seteuid(PL_uid); | |
1105 | PL_delaymagic &= ~DM_EUID; | |
a0d0e21e | 1106 | } |
56febc5e | 1107 | # endif /* HAS_SETEUID */ |
b28d0864 NIS |
1108 | if (PL_delaymagic & DM_UID) { |
1109 | if (PL_uid != PL_euid) | |
cea2e8a9 | 1110 | DIE(aTHX_ "No setreuid available"); |
b28d0864 | 1111 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e | 1112 | } |
56febc5e AD |
1113 | # endif /* HAS_SETREUID */ |
1114 | #endif /* HAS_SETRESUID */ | |
d8eceb89 JH |
1115 | PL_uid = PerlProc_getuid(); |
1116 | PL_euid = PerlProc_geteuid(); | |
a0d0e21e | 1117 | } |
3280af22 | 1118 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1119 | #ifdef HAS_SETRESGID |
b28d0864 | 1120 | (void)setresgid(PL_gid,PL_egid,(Gid_t)-1); |
56febc5e AD |
1121 | #else |
1122 | # ifdef HAS_SETREGID | |
3280af22 | 1123 | (void)setregid(PL_gid,PL_egid); |
56febc5e AD |
1124 | # else |
1125 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
1126 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1127 | (void)setrgid(PL_gid); | |
1128 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 1129 | } |
56febc5e AD |
1130 | # endif /* HAS_SETRGID */ |
1131 | # ifdef HAS_SETEGID | |
b28d0864 NIS |
1132 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
1133 | (void)setegid(PL_gid); | |
1134 | PL_delaymagic &= ~DM_EGID; | |
a0d0e21e | 1135 | } |
56febc5e | 1136 | # endif /* HAS_SETEGID */ |
b28d0864 NIS |
1137 | if (PL_delaymagic & DM_GID) { |
1138 | if (PL_gid != PL_egid) | |
cea2e8a9 | 1139 | DIE(aTHX_ "No setregid available"); |
b28d0864 | 1140 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e | 1141 | } |
56febc5e AD |
1142 | # endif /* HAS_SETREGID */ |
1143 | #endif /* HAS_SETRESGID */ | |
d8eceb89 JH |
1144 | PL_gid = PerlProc_getgid(); |
1145 | PL_egid = PerlProc_getegid(); | |
a0d0e21e | 1146 | } |
3280af22 | 1147 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e | 1148 | } |
3280af22 | 1149 | PL_delaymagic = 0; |
54310121 | 1150 | |
1151 | gimme = GIMME_V; | |
1152 | if (gimme == G_VOID) | |
1153 | SP = firstrelem - 1; | |
1154 | else if (gimme == G_SCALAR) { | |
1155 | dTARGET; | |
1156 | SP = firstrelem; | |
1157 | SETi(lastrelem - firstrelem + 1); | |
1158 | } | |
1159 | else { | |
a0d0e21e LW |
1160 | if (ary || hash) |
1161 | SP = lastrelem; | |
1162 | else | |
1163 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 1164 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 1165 | while (relem <= SP) |
3280af22 | 1166 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 1167 | } |
54310121 | 1168 | RETURN; |
a0d0e21e LW |
1169 | } |
1170 | ||
8782bef2 GB |
1171 | PP(pp_qr) |
1172 | { | |
39644a26 | 1173 | dSP; |
8782bef2 GB |
1174 | register PMOP *pm = cPMOP; |
1175 | SV *rv = sv_newmortal(); | |
57668c4d | 1176 | SV *sv = newSVrv(rv, "Regexp"); |
e08e52cf AMS |
1177 | if (pm->op_pmdynflags & PMdf_TAINTED) |
1178 | SvTAINTED_on(rv); | |
aaa362c4 | 1179 | sv_magic(sv,(SV*)ReREFCNT_inc(PM_GETRE(pm)), PERL_MAGIC_qr,0,0); |
8782bef2 GB |
1180 | RETURNX(PUSHs(rv)); |
1181 | } | |
1182 | ||
a0d0e21e LW |
1183 | PP(pp_match) |
1184 | { | |
39644a26 | 1185 | dSP; dTARG; |
a0d0e21e | 1186 | register PMOP *pm = cPMOP; |
d65afb4b | 1187 | PMOP *dynpm = pm; |
a0d0e21e LW |
1188 | register char *t; |
1189 | register char *s; | |
1190 | char *strend; | |
1191 | I32 global; | |
f722798b IZ |
1192 | I32 r_flags = REXEC_CHECKED; |
1193 | char *truebase; /* Start of string */ | |
aaa362c4 | 1194 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1195 | bool rxtainted; |
a0d0e21e LW |
1196 | I32 gimme = GIMME; |
1197 | STRLEN len; | |
748a9306 | 1198 | I32 minmatch = 0; |
3280af22 | 1199 | I32 oldsave = PL_savestack_ix; |
f86702cc | 1200 | I32 update_minmatch = 1; |
e60df1fa | 1201 | I32 had_zerolen = 0; |
a0d0e21e | 1202 | |
533c011a | 1203 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
1204 | TARG = POPs; |
1205 | else { | |
54b9620d | 1206 | TARG = DEFSV; |
a0d0e21e LW |
1207 | EXTEND(SP,1); |
1208 | } | |
d9f424b2 | 1209 | |
c277df42 | 1210 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e LW |
1211 | s = SvPV(TARG, len); |
1212 | strend = s + len; | |
1213 | if (!s) | |
2269b42e | 1214 | DIE(aTHX_ "panic: pp_match"); |
b3eb6a9b | 1215 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 | 1216 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 1217 | TAINT_NOT; |
a0d0e21e | 1218 | |
53c4c00c | 1219 | PL_reg_match_utf8 = DO_UTF8(TARG); |
d9f424b2 | 1220 | |
d65afb4b | 1221 | /* PMdf_USED is set after a ?? matches once */ |
48c036b1 | 1222 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 | 1223 | failure: |
a0d0e21e LW |
1224 | if (gimme == G_ARRAY) |
1225 | RETURN; | |
1226 | RETPUSHNO; | |
1227 | } | |
1228 | ||
d65afb4b | 1229 | /* empty pattern special-cased to use last successful pattern if possible */ |
3280af22 NIS |
1230 | if (!rx->prelen && PL_curpm) { |
1231 | pm = PL_curpm; | |
aaa362c4 | 1232 | rx = PM_GETRE(pm); |
a0d0e21e | 1233 | } |
d65afb4b | 1234 | |
eb160463 | 1235 | if (rx->minlen > (I32)len) |
d65afb4b | 1236 | goto failure; |
c277df42 | 1237 | |
a0d0e21e | 1238 | truebase = t = s; |
ad94a511 IZ |
1239 | |
1240 | /* XXXX What part of this is needed with true \G-support? */ | |
d65afb4b | 1241 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
cf93c79d | 1242 | rx->startp[0] = -1; |
a0d0e21e | 1243 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 | 1244 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 | 1245 | if (mg && mg->mg_len >= 0) { |
b7a35066 | 1246 | if (!(rx->reganch & ROPT_GPOS_SEEN)) |
1c846c1f | 1247 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e HS |
1248 | else if (rx->reganch & ROPT_ANCH_GPOS) { |
1249 | r_flags |= REXEC_IGNOREPOS; | |
1c846c1f | 1250 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e | 1251 | } |
748a9306 | 1252 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc | 1253 | update_minmatch = 0; |
748a9306 | 1254 | } |
a0d0e21e LW |
1255 | } |
1256 | } | |
14977893 JH |
1257 | if ((!global && rx->nparens) |
1258 | || SvTEMP(TARG) || PL_sawampersand) | |
1259 | r_flags |= REXEC_COPY_STR; | |
1c846c1f | 1260 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
1261 | r_flags |= REXEC_SCREAM; |
1262 | ||
a0d0e21e | 1263 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 NIS |
1264 | SAVEINT(PL_multiline); |
1265 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
1266 | } |
1267 | ||
1268 | play_it_again: | |
cf93c79d IZ |
1269 | if (global && rx->startp[0] != -1) { |
1270 | t = s = rx->endp[0] + truebase; | |
d9f97599 | 1271 | if ((s + rx->minlen) > strend) |
a0d0e21e | 1272 | goto nope; |
f86702cc | 1273 | if (update_minmatch++) |
e60df1fa | 1274 | minmatch = had_zerolen; |
a0d0e21e | 1275 | } |
60aeb6fd NIS |
1276 | if (rx->reganch & RE_USE_INTUIT && |
1277 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { | |
ee0b7718 | 1278 | PL_bostr = truebase; |
f722798b IZ |
1279 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1280 | ||
1281 | if (!s) | |
1282 | goto nope; | |
1283 | if ( (rx->reganch & ROPT_CHECK_ALL) | |
14977893 | 1284 | && !PL_sawampersand |
f722798b IZ |
1285 | && ((rx->reganch & ROPT_NOSCAN) |
1286 | || !((rx->reganch & RE_INTUIT_TAIL) | |
05b4157f GS |
1287 | && (r_flags & REXEC_SCREAM))) |
1288 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
f722798b | 1289 | goto yup; |
a0d0e21e | 1290 | } |
cea2e8a9 | 1291 | if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 | 1292 | { |
3280af22 | 1293 | PL_curpm = pm; |
d65afb4b HS |
1294 | if (dynpm->op_pmflags & PMf_ONCE) |
1295 | dynpm->op_pmdynflags |= PMdf_USED; | |
a0d0e21e LW |
1296 | goto gotcha; |
1297 | } | |
1298 | else | |
1299 | goto ret_no; | |
1300 | /*NOTREACHED*/ | |
1301 | ||
1302 | gotcha: | |
72311751 GS |
1303 | if (rxtainted) |
1304 | RX_MATCH_TAINTED_on(rx); | |
1305 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1306 | if (gimme == G_ARRAY) { |
ffc61ed2 | 1307 | I32 nparens, i, len; |
a0d0e21e | 1308 | |
ffc61ed2 JH |
1309 | nparens = rx->nparens; |
1310 | if (global && !nparens) | |
a0d0e21e LW |
1311 | i = 1; |
1312 | else | |
1313 | i = 0; | |
c277df42 | 1314 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1315 | EXTEND(SP, nparens + i); |
1316 | EXTEND_MORTAL(nparens + i); | |
1317 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e LW |
1318 | PUSHs(sv_newmortal()); |
1319 | /*SUPPRESS 560*/ | |
cf93c79d IZ |
1320 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
1321 | len = rx->endp[i] - rx->startp[i]; | |
290deeac A |
1322 | if (rx->endp[i] < 0 || rx->startp[i] < 0 || |
1323 | len < 0 || len > strend - s) | |
1324 | DIE(aTHX_ "panic: pp_match start/end pointers"); | |
cf93c79d | 1325 | s = rx->startp[i] + truebase; |
a0d0e21e | 1326 | sv_setpvn(*SP, s, len); |
cce850e4 | 1327 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1328 | SvUTF8_on(*SP); |
a0d0e21e LW |
1329 | } |
1330 | } | |
1331 | if (global) { | |
d65afb4b | 1332 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
0af80b60 HS |
1333 | MAGIC* mg = 0; |
1334 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
1335 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1336 | if (!mg) { | |
1337 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); | |
1338 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1339 | } | |
1340 | if (rx->startp[0] != -1) { | |
1341 | mg->mg_len = rx->endp[0]; | |
1342 | if (rx->startp[0] == rx->endp[0]) | |
1343 | mg->mg_flags |= MGf_MINMATCH; | |
1344 | else | |
1345 | mg->mg_flags &= ~MGf_MINMATCH; | |
1346 | } | |
1347 | } | |
cf93c79d IZ |
1348 | had_zerolen = (rx->startp[0] != -1 |
1349 | && rx->startp[0] == rx->endp[0]); | |
c277df42 | 1350 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1351 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1352 | goto play_it_again; |
1353 | } | |
ffc61ed2 | 1354 | else if (!nparens) |
bde848c5 | 1355 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1356 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1357 | RETURN; |
1358 | } | |
1359 | else { | |
1360 | if (global) { | |
1361 | MAGIC* mg = 0; | |
1362 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
14befaf4 | 1363 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1364 | if (!mg) { |
14befaf4 DM |
1365 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1366 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
a0d0e21e | 1367 | } |
cf93c79d IZ |
1368 | if (rx->startp[0] != -1) { |
1369 | mg->mg_len = rx->endp[0]; | |
d9f97599 | 1370 | if (rx->startp[0] == rx->endp[0]) |
748a9306 LW |
1371 | mg->mg_flags |= MGf_MINMATCH; |
1372 | else | |
1373 | mg->mg_flags &= ~MGf_MINMATCH; | |
1374 | } | |
a0d0e21e | 1375 | } |
4633a7c4 | 1376 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1377 | RETPUSHYES; |
1378 | } | |
1379 | ||
f722798b | 1380 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1381 | if (rxtainted) |
1382 | RX_MATCH_TAINTED_on(rx); | |
1383 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1384 | PL_curpm = pm; |
d65afb4b HS |
1385 | if (dynpm->op_pmflags & PMf_ONCE) |
1386 | dynpm->op_pmdynflags |= PMdf_USED; | |
cf93c79d IZ |
1387 | if (RX_MATCH_COPIED(rx)) |
1388 | Safefree(rx->subbeg); | |
1389 | RX_MATCH_COPIED_off(rx); | |
1390 | rx->subbeg = Nullch; | |
a0d0e21e | 1391 | if (global) { |
d9f97599 | 1392 | rx->subbeg = truebase; |
cf93c79d | 1393 | rx->startp[0] = s - truebase; |
53c4c00c | 1394 | if (PL_reg_match_utf8) { |
60aeb6fd NIS |
1395 | char *t = (char*)utf8_hop((U8*)s, rx->minlen); |
1396 | rx->endp[0] = t - truebase; | |
1397 | } | |
1398 | else { | |
1399 | rx->endp[0] = s - truebase + rx->minlen; | |
1400 | } | |
cf93c79d | 1401 | rx->sublen = strend - truebase; |
a0d0e21e | 1402 | goto gotcha; |
1c846c1f | 1403 | } |
14977893 JH |
1404 | if (PL_sawampersand) { |
1405 | I32 off; | |
1406 | ||
1407 | rx->subbeg = savepvn(t, strend - t); | |
1408 | rx->sublen = strend - t; | |
1409 | RX_MATCH_COPIED_on(rx); | |
1410 | off = rx->startp[0] = s - t; | |
1411 | rx->endp[0] = off + rx->minlen; | |
1412 | } | |
1413 | else { /* startp/endp are used by @- @+. */ | |
1414 | rx->startp[0] = s - truebase; | |
1415 | rx->endp[0] = s - truebase + rx->minlen; | |
1416 | } | |
fc19f8d0 | 1417 | rx->nparens = rx->lastparen = 0; /* used by @- and @+ */ |
4633a7c4 | 1418 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1419 | RETPUSHYES; |
1420 | ||
1421 | nope: | |
a0d0e21e | 1422 | ret_no: |
d65afb4b | 1423 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e | 1424 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 | 1425 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1426 | if (mg) |
565764a8 | 1427 | mg->mg_len = -1; |
a0d0e21e LW |
1428 | } |
1429 | } | |
4633a7c4 | 1430 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1431 | if (gimme == G_ARRAY) |
1432 | RETURN; | |
1433 | RETPUSHNO; | |
1434 | } | |
1435 | ||
1436 | OP * | |
864dbfa3 | 1437 | Perl_do_readline(pTHX) |
a0d0e21e LW |
1438 | { |
1439 | dSP; dTARGETSTACKED; | |
1440 | register SV *sv; | |
1441 | STRLEN tmplen = 0; | |
1442 | STRLEN offset; | |
760ac839 | 1443 | PerlIO *fp; |
3280af22 | 1444 | register IO *io = GvIO(PL_last_in_gv); |
533c011a | 1445 | register I32 type = PL_op->op_type; |
54310121 | 1446 | I32 gimme = GIMME_V; |
e79b0511 | 1447 | MAGIC *mg; |
a0d0e21e | 1448 | |
5b468f54 | 1449 | if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { |
e79b0511 | 1450 | PUSHMARK(SP); |
5b468f54 | 1451 | XPUSHs(SvTIED_obj((SV*)io, mg)); |
e79b0511 | 1452 | PUTBACK; |
1453 | ENTER; | |
864dbfa3 | 1454 | call_method("READLINE", gimme); |
e79b0511 | 1455 | LEAVE; |
1456 | SPAGAIN; | |
54310121 | 1457 | if (gimme == G_SCALAR) |
1458 | SvSetMagicSV_nosteal(TARG, TOPs); | |
e79b0511 | 1459 | RETURN; |
1460 | } | |
a0d0e21e LW |
1461 | fp = Nullfp; |
1462 | if (io) { | |
1463 | fp = IoIFP(io); | |
1464 | if (!fp) { | |
1465 | if (IoFLAGS(io) & IOf_ARGV) { | |
1466 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1467 | IoLINES(io) = 0; |
3280af22 | 1468 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1469 | IoFLAGS(io) &= ~IOf_START; |
9d116dd7 | 1470 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 NIS |
1471 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1472 | SvSETMAGIC(GvSV(PL_last_in_gv)); | |
a2008d6d GS |
1473 | fp = IoIFP(io); |
1474 | goto have_fp; | |
a0d0e21e LW |
1475 | } |
1476 | } | |
3280af22 | 1477 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1478 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1479 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1480 | } |
1481 | } | |
0d44d22b NC |
1482 | else if (type == OP_GLOB) |
1483 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1484 | } |
1485 | else if (type == OP_GLOB) | |
1486 | SP--; | |
a00b5bd3 | 1487 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 | 1488 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 | 1489 | } |
a0d0e21e LW |
1490 | } |
1491 | if (!fp) { | |
790090df HS |
1492 | if (ckWARN2(WARN_GLOB, WARN_CLOSED) |
1493 | && (!io || !(IoFLAGS(io) & IOf_START))) { | |
3f4520fe | 1494 | if (type == OP_GLOB) |
9014280d | 1495 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a GS |
1496 | "glob failed (can't start child: %s)", |
1497 | Strerror(errno)); | |
69282e91 | 1498 | else |
bc37a18f | 1499 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe | 1500 | } |
54310121 | 1501 | if (gimme == G_SCALAR) { |
a0d0e21e LW |
1502 | (void)SvOK_off(TARG); |
1503 | PUSHTARG; | |
1504 | } | |
1505 | RETURN; | |
1506 | } | |
a2008d6d | 1507 | have_fp: |
54310121 | 1508 | if (gimme == G_SCALAR) { |
a0d0e21e | 1509 | sv = TARG; |
9607fc9c | 1510 | if (SvROK(sv)) |
1511 | sv_unref(sv); | |
a0d0e21e LW |
1512 | (void)SvUPGRADE(sv, SVt_PV); |
1513 | tmplen = SvLEN(sv); /* remember if already alloced */ | |
1514 | if (!tmplen) | |
1515 | Sv_Grow(sv, 80); /* try short-buffering it */ | |
1516 | if (type == OP_RCATLINE) | |
1517 | offset = SvCUR(sv); | |
1518 | else | |
1519 | offset = 0; | |
1520 | } | |
54310121 | 1521 | else { |
1522 | sv = sv_2mortal(NEWSV(57, 80)); | |
1523 | offset = 0; | |
1524 | } | |
fbad3eb5 | 1525 | |
3887d568 AP |
1526 | /* This should not be marked tainted if the fp is marked clean */ |
1527 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1528 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1529 | TAINT; \ | |
1530 | SvTAINTED_on(sv); \ | |
1531 | } | |
1532 | ||
684bef36 | 1533 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1534 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1535 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1536 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1537 | |
a0d0e21e | 1538 | for (;;) { |
09e8efcc | 1539 | PUTBACK; |
fbad3eb5 GS |
1540 | if (!sv_gets(sv, fp, offset) |
1541 | && (type == OP_GLOB || SNARF_EOF(gimme, PL_rs, io, sv))) | |
1542 | { | |
760ac839 | 1543 | PerlIO_clearerr(fp); |
a0d0e21e | 1544 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1545 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1546 | if (fp) |
1547 | continue; | |
3280af22 | 1548 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1549 | } |
1550 | else if (type == OP_GLOB) { | |
e476b1b5 | 1551 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
9014280d | 1552 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
4eb79ab5 | 1553 | "glob failed (child exited with status %d%s)", |
894356b3 | 1554 | (int)(STATUS_CURRENT >> 8), |
cf494569 | 1555 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 | 1556 | } |
a0d0e21e | 1557 | } |
54310121 | 1558 | if (gimme == G_SCALAR) { |
a0d0e21e | 1559 | (void)SvOK_off(TARG); |
09e8efcc | 1560 | SPAGAIN; |
a0d0e21e LW |
1561 | PUSHTARG; |
1562 | } | |
3887d568 | 1563 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1564 | RETURN; |
1565 | } | |
3887d568 | 1566 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1567 | IoLINES(io)++; |
b9fee9ba | 1568 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1569 | SvSETMAGIC(sv); |
09e8efcc | 1570 | SPAGAIN; |
a0d0e21e | 1571 | XPUSHs(sv); |
a0d0e21e LW |
1572 | if (type == OP_GLOB) { |
1573 | char *tmps; | |
1574 | ||
3280af22 | 1575 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd | 1576 | tmps = SvEND(sv) - 1; |
3280af22 | 1577 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd | 1578 | *tmps = '\0'; |
1579 | SvCUR(sv)--; | |
1580 | } | |
1581 | } | |
a0d0e21e LW |
1582 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1583 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && | |
1584 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) | |
1585 | break; | |
43384a1a | 1586 | if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1587 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1588 | continue; | |
1589 | } | |
1590 | } | |
54310121 | 1591 | if (gimme == G_ARRAY) { |
a0d0e21e LW |
1592 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1593 | SvLEN_set(sv, SvCUR(sv)+1); | |
1594 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1595 | } | |
1596 | sv = sv_2mortal(NEWSV(58, 80)); | |
1597 | continue; | |
1598 | } | |
54310121 | 1599 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e LW |
1600 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1601 | if (SvCUR(sv) < 60) | |
1602 | SvLEN_set(sv, 80); | |
1603 | else | |
1604 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ | |
1605 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1606 | } | |
1607 | RETURN; | |
1608 | } | |
1609 | } | |
1610 | ||
1611 | PP(pp_enter) | |
1612 | { | |
39644a26 | 1613 | dSP; |
c09156bb | 1614 | register PERL_CONTEXT *cx; |
533c011a | 1615 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e | 1616 | |
54310121 | 1617 | if (gimme == -1) { |
1618 | if (cxstack_ix >= 0) | |
1619 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1620 | else | |
1621 | gimme = G_SCALAR; | |
1622 | } | |
a0d0e21e LW |
1623 | |
1624 | ENTER; | |
1625 | ||
1626 | SAVETMPS; | |
924508f0 | 1627 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
1628 | |
1629 | RETURN; | |
1630 | } | |
1631 | ||
1632 | PP(pp_helem) | |
1633 | { | |
39644a26 | 1634 | dSP; |
760ac839 | 1635 | HE* he; |
ae77835f | 1636 | SV **svp; |
a0d0e21e | 1637 | SV *keysv = POPs; |
a0d0e21e | 1638 | HV *hv = (HV*)POPs; |
78f9721b | 1639 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a | 1640 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
be6c24e0 | 1641 | SV *sv; |
1c846c1f | 1642 | U32 hash = (SvFAKE(keysv) && SvREADONLY(keysv)) ? SvUVX(keysv) : 0; |
9c5ffd7c | 1643 | I32 preeminent = 0; |
a0d0e21e | 1644 | |
ae77835f | 1645 | if (SvTYPE(hv) == SVt_PVHV) { |
1f5346dc | 1646 | if (PL_op->op_private & OPpLVAL_INTRO) |
c39e6ab0 DM |
1647 | preeminent = |
1648 | ( SvRMAGICAL(hv) | |
1649 | && !mg_find((SV*)hv, PERL_MAGIC_tied) | |
1650 | && !mg_find((SV*)hv, PERL_MAGIC_env) | |
1651 | ) ? 1 : hv_exists_ent(hv, keysv, 0); | |
1652 | ||
1c846c1f | 1653 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
97fcbf96 | 1654 | svp = he ? &HeVAL(he) : 0; |
ae77835f MB |
1655 | } |
1656 | else if (SvTYPE(hv) == SVt_PVAV) { | |
0ebe0038 | 1657 | if (PL_op->op_private & OPpLVAL_INTRO) |
cea2e8a9 | 1658 | DIE(aTHX_ "Can't localize pseudo-hash element"); |
1c846c1f | 1659 | svp = avhv_fetch_ent((AV*)hv, keysv, lval && !defer, hash); |
ae77835f | 1660 | } |
c750a3ec | 1661 | else { |
a0d0e21e | 1662 | RETPUSHUNDEF; |
c750a3ec | 1663 | } |
a0d0e21e | 1664 | if (lval) { |
3280af22 | 1665 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 1666 | SV* lv; |
1667 | SV* key2; | |
2d8e6c8d GS |
1668 | if (!defer) { |
1669 | STRLEN n_a; | |
cea2e8a9 | 1670 | DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); |
2d8e6c8d | 1671 | } |
68dc0745 | 1672 | lv = sv_newmortal(); |
1673 | sv_upgrade(lv, SVt_PVLV); | |
1674 | LvTYPE(lv) = 'y'; | |
14befaf4 | 1675 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 | 1676 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
1677 | LvTARG(lv) = SvREFCNT_inc(hv); | |
1678 | LvTARGLEN(lv) = 1; | |
1679 | PUSHs(lv); | |
1680 | RETURN; | |
1681 | } | |
533c011a | 1682 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f | 1683 | if (HvNAME(hv) && isGV(*svp)) |
533c011a | 1684 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc SC |
1685 | else { |
1686 | if (!preeminent) { | |
1687 | STRLEN keylen; | |
1688 | char *key = SvPV(keysv, keylen); | |
57813020 | 1689 | SAVEDELETE(hv, savepvn(key,keylen), keylen); |
b412ba13 DM |
1690 | } else { |
1691 | SV *sv; | |
1f5346dc | 1692 | save_helem(hv, keysv, svp); |
b412ba13 DM |
1693 | sv = *svp; |
1694 | /* If we're localizing a tied hash element, this new | |
1695 | * sv won't actually be stored in the hash - so it | |
1696 | * won't get reaped when the localize ends. Ensure it | |
1697 | * gets reaped by mortifying it instead. DAPM */ | |
1698 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
1699 | sv_2mortal(sv); | |
1700 | } | |
1f5346dc | 1701 | } |
5f05dabc | 1702 | } |
533c011a NIS |
1703 | else if (PL_op->op_private & OPpDEREF) |
1704 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 1705 | } |
3280af22 | 1706 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
1707 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1708 | * Pushing the magical RHS on to the stack is useless, since | |
1709 | * that magic is soon destined to be misled by the local(), | |
1710 | * and thus the later pp_sassign() will fail to mg_get() the | |
1711 | * old value. This should also cure problems with delayed | |
1712 | * mg_get()s. GSAR 98-07-03 */ | |
1713 | if (!lval && SvGMAGICAL(sv)) | |
1714 | sv = sv_mortalcopy(sv); | |
1715 | PUSHs(sv); | |
a0d0e21e LW |
1716 | RETURN; |
1717 | } | |
1718 | ||
1719 | PP(pp_leave) | |
1720 | { | |
39644a26 | 1721 | dSP; |
c09156bb | 1722 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
1723 | register SV **mark; |
1724 | SV **newsp; | |
1725 | PMOP *newpm; | |
1726 | I32 gimme; | |
1727 | ||
533c011a | 1728 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1729 | cx = &cxstack[cxstack_ix]; |
3280af22 | 1730 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e LW |
1731 | } |
1732 | ||
1733 | POPBLOCK(cx,newpm); | |
1734 | ||
533c011a | 1735 | gimme = OP_GIMME(PL_op, -1); |
54310121 | 1736 | if (gimme == -1) { |
1737 | if (cxstack_ix >= 0) | |
1738 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1739 | else | |
1740 | gimme = G_SCALAR; | |
1741 | } | |
a0d0e21e | 1742 | |
a1f49e72 | 1743 | TAINT_NOT; |
54310121 | 1744 | if (gimme == G_VOID) |
1745 | SP = newsp; | |
1746 | else if (gimme == G_SCALAR) { | |
1747 | MARK = newsp + 1; | |
09256e2f | 1748 | if (MARK <= SP) { |
54310121 | 1749 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1750 | *MARK = TOPs; | |
1751 | else | |
1752 | *MARK = sv_mortalcopy(TOPs); | |
09256e2f | 1753 | } else { |
54310121 | 1754 | MEXTEND(mark,0); |
3280af22 | 1755 | *MARK = &PL_sv_undef; |
a0d0e21e | 1756 | } |
54310121 | 1757 | SP = MARK; |
a0d0e21e | 1758 | } |
54310121 | 1759 | else if (gimme == G_ARRAY) { |
a1f49e72 CS |
1760 | /* in case LEAVE wipes old return values */ |
1761 | for (mark = newsp + 1; mark <= SP; mark++) { | |
1762 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
a0d0e21e | 1763 | *mark = sv_mortalcopy(*mark); |
a1f49e72 CS |
1764 | TAINT_NOT; /* Each item is independent */ |
1765 | } | |
1766 | } | |
a0d0e21e | 1767 | } |
3280af22 | 1768 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e LW |
1769 | |
1770 | LEAVE; | |
1771 | ||
1772 | RETURN; | |
1773 | } | |
1774 | ||
1775 | PP(pp_iter) | |
1776 | { | |
39644a26 | 1777 | dSP; |
c09156bb | 1778 | register PERL_CONTEXT *cx; |
5f05dabc | 1779 | SV* sv; |
4633a7c4 | 1780 | AV* av; |
1d7c1841 | 1781 | SV **itersvp; |
a0d0e21e | 1782 | |
924508f0 | 1783 | EXTEND(SP, 1); |
a0d0e21e | 1784 | cx = &cxstack[cxstack_ix]; |
6b35e009 | 1785 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 | 1786 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1787 | |
1d7c1841 | 1788 | itersvp = CxITERVAR(cx); |
4633a7c4 | 1789 | av = cx->blk_loop.iterary; |
89ea2908 GA |
1790 | if (SvTYPE(av) != SVt_PVAV) { |
1791 | /* iterate ($min .. $max) */ | |
1792 | if (cx->blk_loop.iterlval) { | |
1793 | /* string increment */ | |
1794 | register SV* cur = cx->blk_loop.iterlval; | |
1795 | STRLEN maxlen; | |
1796 | char *max = SvPV((SV*)av, maxlen); | |
1797 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { | |
4d1ff10f | 1798 | #ifndef USE_5005THREADS /* don't risk potential race */ |
1d7c1841 | 1799 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1800 | /* safe to reuse old SV */ |
1d7c1841 | 1801 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1802 | } |
1c846c1f | 1803 | else |
eaa5c2d6 GA |
1804 | #endif |
1805 | { | |
1806 | /* we need a fresh SV every time so that loop body sees a | |
1807 | * completely new SV for closures/references to work as | |
1808 | * they used to */ | |
1d7c1841 GS |
1809 | SvREFCNT_dec(*itersvp); |
1810 | *itersvp = newSVsv(cur); | |
eaa5c2d6 | 1811 | } |
89ea2908 GA |
1812 | if (strEQ(SvPVX(cur), max)) |
1813 | sv_setiv(cur, 0); /* terminate next time */ | |
1814 | else | |
1815 | sv_inc(cur); | |
1816 | RETPUSHYES; | |
1817 | } | |
1818 | RETPUSHNO; | |
1819 | } | |
1820 | /* integer increment */ | |
1821 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) | |
1822 | RETPUSHNO; | |
7f61b687 | 1823 | |
4d1ff10f | 1824 | #ifndef USE_5005THREADS /* don't risk potential race */ |
1d7c1841 | 1825 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1826 | /* safe to reuse old SV */ |
1d7c1841 | 1827 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 | 1828 | } |
1c846c1f | 1829 | else |
eaa5c2d6 GA |
1830 | #endif |
1831 | { | |
1832 | /* we need a fresh SV every time so that loop body sees a | |
1833 | * completely new SV for closures/references to work as they | |
1834 | * used to */ | |
1d7c1841 GS |
1835 | SvREFCNT_dec(*itersvp); |
1836 | *itersvp = newSViv(cx->blk_loop.iterix++); | |
eaa5c2d6 | 1837 | } |
89ea2908 GA |
1838 | RETPUSHYES; |
1839 | } | |
1840 | ||
1841 | /* iterate array */ | |
3280af22 | 1842 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) |
4633a7c4 | 1843 | RETPUSHNO; |
a0d0e21e | 1844 | |
1d7c1841 | 1845 | SvREFCNT_dec(*itersvp); |
a0d0e21e | 1846 | |
d42935ef JH |
1847 | if (SvMAGICAL(av) || AvREIFY(av)) { |
1848 | SV **svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE); | |
1849 | if (svp) | |
1850 | sv = *svp; | |
1851 | else | |
1852 | sv = Nullsv; | |
1853 | } | |
1854 | else { | |
1855 | sv = AvARRAY(av)[++cx->blk_loop.iterix]; | |
1856 | } | |
1857 | if (sv) | |
a0d0e21e | 1858 | SvTEMP_off(sv); |
a0d0e21e | 1859 | else |
3280af22 | 1860 | sv = &PL_sv_undef; |
8b530633 | 1861 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc | 1862 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc | 1863 | if (lv && SvREFCNT(lv) > 1) { |
1864 | SvREFCNT_dec(lv); | |
1865 | lv = Nullsv; | |
1866 | } | |
5f05dabc | 1867 | if (lv) |
1868 | SvREFCNT_dec(LvTARG(lv)); | |
1869 | else { | |
68dc0745 | 1870 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc | 1871 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc | 1872 | LvTYPE(lv) = 'y'; |
14befaf4 | 1873 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
5f05dabc | 1874 | } |
1875 | LvTARG(lv) = SvREFCNT_inc(av); | |
1876 | LvTARGOFF(lv) = cx->blk_loop.iterix; | |
42718184 | 1877 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc | 1878 | sv = (SV*)lv; |
1879 | } | |
a0d0e21e | 1880 | |
1d7c1841 | 1881 | *itersvp = SvREFCNT_inc(sv); |
a0d0e21e LW |
1882 | RETPUSHYES; |
1883 | } | |
1884 | ||
1885 | PP(pp_subst) | |
1886 | { | |
39644a26 | 1887 | dSP; dTARG; |
a0d0e21e LW |
1888 | register PMOP *pm = cPMOP; |
1889 | PMOP *rpm = pm; | |
1890 | register SV *dstr; | |
1891 | register char *s; | |
1892 | char *strend; | |
1893 | register char *m; | |
1894 | char *c; | |
1895 | register char *d; | |
1896 | STRLEN clen; | |
1897 | I32 iters = 0; | |
1898 | I32 maxiters; | |
1899 | register I32 i; | |
1900 | bool once; | |
71be2cbc | 1901 | bool rxtainted; |
a0d0e21e | 1902 | char *orig; |
22e551b9 | 1903 | I32 r_flags; |
aaa362c4 | 1904 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
1905 | STRLEN len; |
1906 | int force_on_match = 0; | |
3280af22 | 1907 | I32 oldsave = PL_savestack_ix; |
792b2c16 | 1908 | STRLEN slen; |
f272994b | 1909 | bool doutf8 = FALSE; |
a0d0e21e | 1910 | |
5cd24f17 | 1911 | /* known replacement string? */ |
1912 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; | |
533c011a | 1913 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
1914 | TARG = POPs; |
1915 | else { | |
54b9620d | 1916 | TARG = DEFSV; |
a0d0e21e | 1917 | EXTEND(SP,1); |
1c846c1f | 1918 | } |
d9f424b2 | 1919 | |
eca06228 NIS |
1920 | if (SvFAKE(TARG) && SvREADONLY(TARG)) |
1921 | sv_force_normal(TARG); | |
68dc0745 | 1922 | if (SvREADONLY(TARG) |
1923 | || (SvTYPE(TARG) > SVt_PVLV | |
1924 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG)))) | |
d470f89e | 1925 | DIE(aTHX_ PL_no_modify); |
8ec5e241 NIS |
1926 | PUTBACK; |
1927 | ||
a0d0e21e | 1928 | s = SvPV(TARG, len); |
68dc0745 | 1929 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 1930 | force_on_match = 1; |
b3eb6a9b | 1931 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 NIS |
1932 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
1933 | if (PL_tainted) | |
b3eb6a9b | 1934 | rxtainted |= 2; |
9212bbba | 1935 | TAINT_NOT; |
a12c0f56 | 1936 | |
53c4c00c | 1937 | PL_reg_match_utf8 = DO_UTF8(TARG); |
d9f424b2 | 1938 | |
a0d0e21e LW |
1939 | force_it: |
1940 | if (!pm || !s) | |
2269b42e | 1941 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
1942 | |
1943 | strend = s + len; | |
53c4c00c | 1944 | slen = PL_reg_match_utf8 ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
1945 | maxiters = 2 * slen + 10; /* We can match twice at each |
1946 | position, once with zero-length, | |
1947 | second time with non-zero. */ | |
a0d0e21e | 1948 | |
3280af22 NIS |
1949 | if (!rx->prelen && PL_curpm) { |
1950 | pm = PL_curpm; | |
aaa362c4 | 1951 | rx = PM_GETRE(pm); |
a0d0e21e | 1952 | } |
22e551b9 | 1953 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
9d080a66 | 1954 | ? REXEC_COPY_STR : 0; |
f722798b | 1955 | if (SvSCREAM(TARG)) |
22e551b9 | 1956 | r_flags |= REXEC_SCREAM; |
a0d0e21e | 1957 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 NIS |
1958 | SAVEINT(PL_multiline); |
1959 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
1960 | } |
1961 | orig = m = s; | |
f722798b | 1962 | if (rx->reganch & RE_USE_INTUIT) { |
ee0b7718 | 1963 | PL_bostr = orig; |
f722798b IZ |
1964 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1965 | ||
1966 | if (!s) | |
1967 | goto nope; | |
1968 | /* How to do it in subst? */ | |
1969 | /* if ( (rx->reganch & ROPT_CHECK_ALL) | |
1c846c1f | 1970 | && !PL_sawampersand |
f722798b IZ |
1971 | && ((rx->reganch & ROPT_NOSCAN) |
1972 | || !((rx->reganch & RE_INTUIT_TAIL) | |
1973 | && (r_flags & REXEC_SCREAM)))) | |
1974 | goto yup; | |
1975 | */ | |
a0d0e21e | 1976 | } |
71be2cbc | 1977 | |
1978 | /* only replace once? */ | |
a0d0e21e | 1979 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc | 1980 | |
1981 | /* known replacement string? */ | |
f272994b A |
1982 | if (dstr) { |
1983 | c = SvPV(dstr, clen); | |
1984 | doutf8 = DO_UTF8(dstr); | |
1985 | } | |
1986 | else { | |
1987 | c = Nullch; | |
1988 | doutf8 = FALSE; | |
1989 | } | |
1990 | ||
71be2cbc | 1991 | /* can do inplace substitution? */ |
eb160463 | 1992 | if (c && (I32)clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) |
d9f97599 | 1993 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN)) { |
f722798b IZ |
1994 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
1995 | r_flags | REXEC_CHECKED)) | |
1996 | { | |
8ec5e241 | 1997 | SPAGAIN; |
3280af22 | 1998 | PUSHs(&PL_sv_no); |
71be2cbc | 1999 | LEAVE_SCOPE(oldsave); |
2000 | RETURN; | |
2001 | } | |
2002 | if (force_on_match) { | |
2003 | force_on_match = 0; | |
2004 | s = SvPV_force(TARG, len); | |
2005 | goto force_it; | |
2006 | } | |
71be2cbc | 2007 | d = s; |
3280af22 | 2008 | PL_curpm = pm; |
71be2cbc | 2009 | SvSCREAM_off(TARG); /* disable possible screamer */ |
2010 | if (once) { | |
48c036b1 | 2011 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d IZ |
2012 | m = orig + rx->startp[0]; |
2013 | d = orig + rx->endp[0]; | |
71be2cbc | 2014 | s = orig; |
2015 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2016 | if (clen) { | |
2017 | Copy(c, m, clen, char); | |
2018 | m += clen; | |
a0d0e21e | 2019 | } |
71be2cbc | 2020 | i = strend - d; |
2021 | if (i > 0) { | |
2022 | Move(d, m, i, char); | |
2023 | m += i; | |
a0d0e21e | 2024 | } |
71be2cbc | 2025 | *m = '\0'; |
2026 | SvCUR_set(TARG, m - s); | |
2027 | } | |
2028 | /*SUPPRESS 560*/ | |
155aba94 | 2029 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc | 2030 | d -= clen; |
2031 | m = d; | |
2032 | sv_chop(TARG, d-i); | |
2033 | s += i; | |
2034 | while (i--) | |
2035 | *--d = *--s; | |
2036 | if (clen) | |
2037 | Copy(c, m, clen, char); | |
2038 | } | |
2039 | else if (clen) { | |
2040 | d -= clen; | |
2041 | sv_chop(TARG, d); | |
2042 | Copy(c, d, clen, char); | |
2043 | } | |
2044 | else { | |
2045 | sv_chop(TARG, d); | |
2046 | } | |
48c036b1 | 2047 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2048 | SPAGAIN; |
3280af22 | 2049 | PUSHs(&PL_sv_yes); |
71be2cbc | 2050 | } |
2051 | else { | |
71be2cbc | 2052 | do { |
2053 | if (iters++ > maxiters) | |
cea2e8a9 | 2054 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2055 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2056 | m = rx->startp[0] + orig; |
71be2cbc | 2057 | /*SUPPRESS 560*/ |
155aba94 | 2058 | if ((i = m - s)) { |
71be2cbc | 2059 | if (s != d) |
2060 | Move(s, d, i, char); | |
2061 | d += i; | |
a0d0e21e | 2062 | } |
71be2cbc | 2063 | if (clen) { |
2064 | Copy(c, d, clen, char); | |
2065 | d += clen; | |
2066 | } | |
cf93c79d | 2067 | s = rx->endp[0] + orig; |
cea2e8a9 | 2068 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b IZ |
2069 | TARG, NULL, |
2070 | /* don't match same null twice */ | |
2071 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 2072 | if (s != d) { |
2073 | i = strend - s; | |
2074 | SvCUR_set(TARG, d - SvPVX(TARG) + i); | |
2075 | Move(s, d, i+1, char); /* include the NUL */ | |
a0d0e21e | 2076 | } |
48c036b1 | 2077 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2078 | SPAGAIN; |
71be2cbc | 2079 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e | 2080 | } |
80b498e0 | 2081 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 | 2082 | TAINT_IF(rxtainted); |
8ec5e241 NIS |
2083 | if (SvSMAGICAL(TARG)) { |
2084 | PUTBACK; | |
2085 | mg_set(TARG); | |
2086 | SPAGAIN; | |
2087 | } | |
9212bbba | 2088 | SvTAINT(TARG); |
71be2cbc | 2089 | LEAVE_SCOPE(oldsave); |
2090 | RETURN; | |
a0d0e21e | 2091 | } |
71be2cbc | 2092 | |
f722798b IZ |
2093 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2094 | r_flags | REXEC_CHECKED)) | |
2095 | { | |
a0d0e21e LW |
2096 | if (force_on_match) { |
2097 | force_on_match = 0; | |
2098 | s = SvPV_force(TARG, len); | |
2099 | goto force_it; | |
2100 | } | |
48c036b1 | 2101 | rxtainted |= RX_MATCH_TAINTED(rx); |
8ec5e241 | 2102 | dstr = NEWSV(25, len); |
a0d0e21e | 2103 | sv_setpvn(dstr, m, s-m); |
ffc61ed2 JH |
2104 | if (DO_UTF8(TARG)) |
2105 | SvUTF8_on(dstr); | |
3280af22 | 2106 | PL_curpm = pm; |
a0d0e21e | 2107 | if (!c) { |
c09156bb | 2108 | register PERL_CONTEXT *cx; |
8ec5e241 | 2109 | SPAGAIN; |
a0d0e21e LW |
2110 | PUSHSUBST(cx); |
2111 | RETURNOP(cPMOP->op_pmreplroot); | |
2112 | } | |
cf93c79d | 2113 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2114 | do { |
2115 | if (iters++ > maxiters) | |
cea2e8a9 | 2116 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2117 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2118 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e LW |
2119 | m = s; |
2120 | s = orig; | |
cf93c79d | 2121 | orig = rx->subbeg; |
a0d0e21e LW |
2122 | s = orig + (m - s); |
2123 | strend = s + (strend - m); | |
2124 | } | |
cf93c79d | 2125 | m = rx->startp[0] + orig; |
a0d0e21e | 2126 | sv_catpvn(dstr, s, m-s); |
cf93c79d | 2127 | s = rx->endp[0] + orig; |
a0d0e21e LW |
2128 | if (clen) |
2129 | sv_catpvn(dstr, c, clen); | |
2130 | if (once) | |
2131 | break; | |
ffc61ed2 JH |
2132 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2133 | TARG, NULL, r_flags)); | |
89afcb60 A |
2134 | if (doutf8 && !DO_UTF8(dstr)) { |
2135 | SV* nsv = sv_2mortal(newSVpvn(s, strend - s)); | |
2136 | ||
2137 | sv_utf8_upgrade(nsv); | |
2138 | sv_catpvn(dstr, SvPVX(nsv), SvCUR(nsv)); | |
2139 | } | |
2140 | else | |
2141 | sv_catpvn(dstr, s, strend - s); | |
748a9306 | 2142 | |
4633a7c4 | 2143 | (void)SvOOK_off(TARG); |
cb0b1708 | 2144 | Safefree(SvPVX(TARG)); |
748a9306 LW |
2145 | SvPVX(TARG) = SvPVX(dstr); |
2146 | SvCUR_set(TARG, SvCUR(dstr)); | |
2147 | SvLEN_set(TARG, SvLEN(dstr)); | |
f272994b | 2148 | doutf8 |= DO_UTF8(dstr); |
748a9306 LW |
2149 | SvPVX(dstr) = 0; |
2150 | sv_free(dstr); | |
2151 | ||
48c036b1 | 2152 | TAINT_IF(rxtainted & 1); |
f878fbec | 2153 | SPAGAIN; |
48c036b1 GS |
2154 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2155 | ||
a0d0e21e | 2156 | (void)SvPOK_only(TARG); |
f272994b | 2157 | if (doutf8) |
60aeb6fd | 2158 | SvUTF8_on(TARG); |
48c036b1 | 2159 | TAINT_IF(rxtainted); |
a0d0e21e | 2160 | SvSETMAGIC(TARG); |
9212bbba | 2161 | SvTAINT(TARG); |
4633a7c4 | 2162 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2163 | RETURN; |
2164 | } | |
5cd24f17 | 2165 | goto ret_no; |
a0d0e21e LW |
2166 | |
2167 | nope: | |
1c846c1f | 2168 | ret_no: |
8ec5e241 | 2169 | SPAGAIN; |
3280af22 | 2170 | PUSHs(&PL_sv_no); |
4633a7c4 | 2171 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2172 | RETURN; |
2173 | } | |
2174 | ||
2175 | PP(pp_grepwhile) | |
2176 | { | |
39644a26 | 2177 | dSP; |
a0d0e21e LW |
2178 | |
2179 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2180 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2181 | ++*PL_markstack_ptr; | |
a0d0e21e LW |
2182 | LEAVE; /* exit inner scope */ |
2183 | ||
2184 | /* All done yet? */ | |
3280af22 | 2185 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2186 | I32 items; |
54310121 | 2187 | I32 gimme = GIMME_V; |
a0d0e21e LW |
2188 | |
2189 | LEAVE; /* exit outer scope */ | |
2190 | (void)POPMARK; /* pop src */ | |
3280af22 | 2191 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2192 | (void)POPMARK; /* pop dst */ |
3280af22 | 2193 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2194 | if (gimme == G_SCALAR) { |
a0d0e21e LW |
2195 | dTARGET; |
2196 | XPUSHi(items); | |
a0d0e21e | 2197 | } |
54310121 | 2198 | else if (gimme == G_ARRAY) |
2199 | SP += items; | |
a0d0e21e LW |
2200 | RETURN; |
2201 | } | |
2202 | else { | |
2203 | SV *src; | |
2204 | ||
2205 | ENTER; /* enter inner scope */ | |
1d7c1841 | 2206 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2207 | |
3280af22 | 2208 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2209 | SvTEMP_off(src); |
54b9620d | 2210 | DEFSV = src; |
a0d0e21e LW |
2211 | |
2212 | RETURNOP(cLOGOP->op_other); | |
2213 | } | |
2214 | } | |
2215 | ||
2216 | PP(pp_leavesub) | |
2217 | { | |
39644a26 | 2218 | dSP; |
a0d0e21e LW |
2219 | SV **mark; |
2220 | SV **newsp; | |
2221 | PMOP *newpm; | |
2222 | I32 gimme; | |
c09156bb | 2223 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2224 | SV *sv; |
a0d0e21e LW |
2225 | |
2226 | POPBLOCK(cx,newpm); | |
1c846c1f | 2227 | |
a1f49e72 | 2228 | TAINT_NOT; |
a0d0e21e LW |
2229 | if (gimme == G_SCALAR) { |
2230 | MARK = newsp + 1; | |
a29cdaf0 | 2231 | if (MARK <= SP) { |
a8bba7fa | 2232 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 IZ |
2233 | if (SvTEMP(TOPs)) { |
2234 | *MARK = SvREFCNT_inc(TOPs); | |
2235 | FREETMPS; | |
2236 | sv_2mortal(*MARK); | |
cd06dffe GS |
2237 | } |
2238 | else { | |
959e3673 | 2239 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2240 | FREETMPS; |
959e3673 GS |
2241 | *MARK = sv_mortalcopy(sv); |
2242 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2243 | } |
cd06dffe GS |
2244 | } |
2245 | else | |
a29cdaf0 | 2246 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe GS |
2247 | } |
2248 | else { | |
f86702cc | 2249 | MEXTEND(MARK, 0); |
3280af22 | 2250 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2251 | } |
2252 | SP = MARK; | |
2253 | } | |
54310121 | 2254 | else if (gimme == G_ARRAY) { |
f86702cc | 2255 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 | 2256 | if (!SvTEMP(*MARK)) { |
f86702cc | 2257 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2258 | TAINT_NOT; /* Each item is independent */ |
2259 | } | |
f86702cc | 2260 | } |
a0d0e21e | 2261 | } |
f86702cc | 2262 | PUTBACK; |
1c846c1f | 2263 | |
b0d9ce38 | 2264 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2265 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e LW |
2266 | |
2267 | LEAVE; | |
b0d9ce38 | 2268 | LEAVESUB(sv); |
a0d0e21e LW |
2269 | return pop_return(); |
2270 | } | |
2271 | ||
cd06dffe GS |
2272 | /* This duplicates the above code because the above code must not |
2273 | * get any slower by more conditions */ | |
2274 | PP(pp_leavesublv) | |
2275 | { | |
39644a26 | 2276 | dSP; |
cd06dffe GS |
2277 | SV **mark; |
2278 | SV **newsp; | |
2279 | PMOP *newpm; | |
2280 | I32 gimme; | |
2281 | register PERL_CONTEXT *cx; | |
b0d9ce38 | 2282 | SV *sv; |
cd06dffe GS |
2283 | |
2284 | POPBLOCK(cx,newpm); | |
1c846c1f | 2285 | |
cd06dffe GS |
2286 | TAINT_NOT; |
2287 | ||
2288 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { | |
2289 | /* We are an argument to a function or grep(). | |
2290 | * This kind of lvalueness was legal before lvalue | |
2291 | * subroutines too, so be backward compatible: | |
2292 | * cannot report errors. */ | |
2293 | ||
2294 | /* Scalar context *is* possible, on the LHS of -> only, | |
2295 | * as in f()->meth(). But this is not an lvalue. */ | |
2296 | if (gimme == G_SCALAR) | |
2297 | goto temporise; | |
2298 | if (gimme == G_ARRAY) { | |
a8bba7fa | 2299 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe GS |
2300 | goto temporise_array; |
2301 | EXTEND_MORTAL(SP - newsp); | |
2302 | for (mark = newsp + 1; mark <= SP; mark++) { | |
2303 | if (SvTEMP(*mark)) | |
2304 | /* empty */ ; | |
2305 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) | |
2306 | *mark = sv_mortalcopy(*mark); | |
2307 | else { | |
2308 | /* Can be a localized value subject to deletion. */ | |
2309 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2310 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2311 | } |
2312 | } | |
2313 | } | |
2314 | } | |
2315 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ | |
2316 | /* Here we go for robustness, not for speed, so we change all | |
2317 | * the refcounts so the caller gets a live guy. Cannot set | |
2318 | * TEMP, so sv_2mortal is out of question. */ | |
a8bba7fa | 2319 | if (!CvLVALUE(cx->blk_sub.cv)) { |
b0d9ce38 | 2320 | POPSUB(cx,sv); |
d470f89e | 2321 | PL_curpm = newpm; |
b0d9ce38 GS |
2322 | LEAVE; |
2323 | LEAVESUB(sv); | |
d470f89e GS |
2324 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2325 | } | |
cd06dffe GS |
2326 | if (gimme == G_SCALAR) { |
2327 | MARK = newsp + 1; | |
2328 | EXTEND_MORTAL(1); | |
2329 | if (MARK == SP) { | |
d470f89e | 2330 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
b0d9ce38 | 2331 | POPSUB(cx,sv); |
d470f89e | 2332 | PL_curpm = newpm; |
b0d9ce38 GS |
2333 | LEAVE; |
2334 | LEAVESUB(sv); | |
d470f89e | 2335 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
cd06dffe | 2336 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); |
d470f89e | 2337 | } |
cd06dffe GS |
2338 | else { /* Can be a localized value |
2339 | * subject to deletion. */ | |
2340 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2341 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2342 | } |
2343 | } | |
d470f89e | 2344 | else { /* Should not happen? */ |
b0d9ce38 | 2345 | POPSUB(cx,sv); |
d470f89e | 2346 | PL_curpm = newpm; |
b0d9ce38 GS |
2347 | LEAVE; |
2348 | LEAVESUB(sv); | |
d470f89e | 2349 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe | 2350 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e | 2351 | } |
cd06dffe GS |
2352 | SP = MARK; |
2353 | } | |
2354 | else if (gimme == G_ARRAY) { | |
2355 | EXTEND_MORTAL(SP - newsp); | |
2356 | for (mark = newsp + 1; mark <= SP; mark++) { | |
f206cdda AMS |
2357 | if (*mark != &PL_sv_undef |
2358 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { | |
d470f89e GS |
2359 | /* Might be flattened array after $#array = */ |
2360 | PUTBACK; | |
b0d9ce38 | 2361 | POPSUB(cx,sv); |
d470f89e | 2362 | PL_curpm = newpm; |
b0d9ce38 GS |
2363 | LEAVE; |
2364 | LEAVESUB(sv); | |
f206cdda AMS |
2365 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2366 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
d470f89e | 2367 | } |
cd06dffe | 2368 | else { |
cd06dffe GS |
2369 | /* Can be a localized value subject to deletion. */ |
2370 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2371 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2372 | } |
2373 | } | |
2374 | } | |
2375 | } | |
2376 | else { | |
2377 | if (gimme == G_SCALAR) { | |
2378 | temporise: | |
2379 | MARK = newsp + 1; | |
2380 | if (MARK <= SP) { | |
a8bba7fa | 2381 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe GS |
2382 | if (SvTEMP(TOPs)) { |
2383 | *MARK = SvREFCNT_inc(TOPs); | |
2384 | FREETMPS; | |
2385 | sv_2mortal(*MARK); | |
2386 | } | |
2387 | else { | |
959e3673 | 2388 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe | 2389 | FREETMPS; |
959e3673 GS |
2390 | *MARK = sv_mortalcopy(sv); |
2391 | SvREFCNT_dec(sv); | |
cd06dffe GS |
2392 | } |
2393 | } | |
2394 | else | |
2395 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
2396 | } | |
2397 | else { | |
2398 | MEXTEND(MARK, 0); | |
2399 | *MARK = &PL_sv_undef; | |
2400 | } | |
2401 | SP = MARK; | |
2402 | } | |
2403 | else if (gimme == G_ARRAY) { | |
2404 | temporise_array: | |
2405 | for (MARK = newsp + 1; MARK <= SP; MARK++) { | |
2406 | if (!SvTEMP(*MARK)) { | |
2407 | *MARK = sv_mortalcopy(*MARK); | |
2408 | TAINT_NOT; /* Each item is independent */ | |
2409 | } | |
2410 | } | |
2411 | } | |
2412 | } | |
2413 | PUTBACK; | |
1c846c1f | 2414 | |
b0d9ce38 | 2415 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe GS |
2416 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2417 | ||
2418 | LEAVE; | |
b0d9ce38 | 2419 | LEAVESUB(sv); |
cd06dffe GS |
2420 | return pop_return(); |
2421 | } | |
2422 | ||
2423 | ||
76e3520e | 2424 | STATIC CV * |
cea2e8a9 | 2425 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 | 2426 | { |
3280af22 | 2427 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 GS |
2428 | |
2429 | if (!PERLDB_SUB_NN) { | |
2430 | GV *gv = CvGV(cv); | |
2431 | ||
2432 | save_item(dbsv); | |
2433 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) | |
1c846c1f | 2434 | || strEQ(GvNAME(gv), "END") |
491527d0 GS |
2435 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
2436 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) | |
2437 | && (gv = (GV*)*svp) ))) { | |
2438 | /* Use GV from the stack as a fallback. */ | |
2439 | /* GV is potentially non-unique, or contain different CV. */ | |
c2e66d9e GS |
2440 | SV *tmp = newRV((SV*)cv); |
2441 | sv_setsv(dbsv, tmp); | |
2442 | SvREFCNT_dec(tmp); | |
491527d0 GS |
2443 | } |
2444 | else { | |
2445 | gv_efullname3(dbsv, gv, Nullch); | |
2446 | } | |
3de9ffa1 MB |
2447 | } |
2448 | else { | |
155aba94 GS |
2449 | (void)SvUPGRADE(dbsv, SVt_PVIV); |
2450 | (void)SvIOK_on(dbsv); | |
491527d0 | 2451 | SAVEIV(SvIVX(dbsv)); |
5bc28da9 | 2452 | SvIVX(dbsv) = PTR2IV(cv); /* Do it the quickest way */ |
3de9ffa1 | 2453 | } |
491527d0 | 2454 | |
3de9ffa1 | 2455 | if (CvXSUB(cv)) |
3280af22 NIS |
2456 | PL_curcopdb = PL_curcop; |
2457 | cv = GvCV(PL_DBsub); | |
3de9ffa1 MB |
2458 | return cv; |
2459 | } | |
2460 | ||
a0d0e21e LW |
2461 | PP(pp_entersub) |
2462 | { | |
39644a26 | 2463 | dSP; dPOPss; |
a0d0e21e LW |
2464 | GV *gv; |
2465 | HV *stash; | |
2466 | register CV *cv; | |
c09156bb | 2467 | register PERL_CONTEXT *cx; |
5d94fbed | 2468 | I32 gimme; |
533c011a | 2469 | bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2470 | |
2471 | if (!sv) | |
cea2e8a9 | 2472 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e LW |
2473 | switch (SvTYPE(sv)) { |
2474 | default: | |
2475 | if (!SvROK(sv)) { | |
748a9306 | 2476 | char *sym; |
2d8e6c8d | 2477 | STRLEN n_a; |
748a9306 | 2478 | |
3280af22 | 2479 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a | 2480 | if (hasargs) |
3280af22 | 2481 | SP = PL_stack_base + POPMARK; |
a0d0e21e | 2482 | RETURN; |
fb73857a | 2483 | } |
15ff848f CS |
2484 | if (SvGMAGICAL(sv)) { |
2485 | mg_get(sv); | |
f5f1d18e AMS |
2486 | if (SvROK(sv)) |
2487 | goto got_rv; | |
15ff848f CS |
2488 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; |
2489 | } | |
2490 | else | |
2d8e6c8d | 2491 | sym = SvPV(sv, n_a); |
15ff848f | 2492 | if (!sym) |
cea2e8a9 | 2493 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2494 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 | 2495 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 | 2496 | cv = get_cv(sym, TRUE); |
a0d0e21e LW |
2497 | break; |
2498 | } | |
f5f1d18e | 2499 | got_rv: |
f5284f61 IZ |
2500 | { |
2501 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ | |
2502 | tryAMAGICunDEREF(to_cv); | |
2503 | } | |
a0d0e21e LW |
2504 | cv = (CV*)SvRV(sv); |
2505 | if (SvTYPE(cv) == SVt_PVCV) | |
2506 | break; | |
2507 | /* FALL THROUGH */ | |
2508 | case SVt_PVHV: | |
2509 | case SVt_PVAV: | |
cea2e8a9 | 2510 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e LW |
2511 | case SVt_PVCV: |
2512 | cv = (CV*)sv; | |
2513 | break; | |
2514 | case SVt_PVGV: | |
8ebc5c01 | 2515 | if (!(cv = GvCVu((GV*)sv))) |
f6ec51f7 GS |
2516 | cv = sv_2cv(sv, &stash, &gv, FALSE); |
2517 | if (!cv) { | |
2518 | ENTER; | |
2519 | SAVETMPS; | |
2520 | goto try_autoload; | |
2521 | } | |
2522 | break; | |
a0d0e21e LW |
2523 | } |
2524 | ||
2525 | ENTER; | |
2526 | SAVETMPS; | |
2527 | ||
2528 | retry: | |
a0d0e21e | 2529 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
44a8e56a | 2530 | GV* autogv; |
22239a37 | 2531 | SV* sub_name; |
44a8e56a | 2532 | |
2533 | /* anonymous or undef'd function leaves us no recourse */ | |
2534 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
cea2e8a9 | 2535 | DIE(aTHX_ "Undefined subroutine called"); |
67caa1fe | 2536 | |
44a8e56a | 2537 | /* autoloaded stub? */ |
2538 | if (cv != GvCV(gv)) { | |
2539 | cv = GvCV(gv); | |
a0d0e21e | 2540 | } |
44a8e56a | 2541 | /* should call AUTOLOAD now? */ |
67caa1fe | 2542 | else { |
f6ec51f7 GS |
2543 | try_autoload: |
2544 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), | |
2545 | FALSE))) | |
2546 | { | |
2547 | cv = GvCV(autogv); | |
2548 | } | |
2549 | /* sorry */ | |
2550 | else { | |
2551 | sub_name = sv_newmortal(); | |
2552 | gv_efullname3(sub_name, gv, Nullch); | |
cea2e8a9 | 2553 | DIE(aTHX_ "Undefined subroutine &%s called", SvPVX(sub_name)); |
f6ec51f7 | 2554 | } |
67caa1fe GS |
2555 | } |
2556 | if (!cv) | |
cea2e8a9 | 2557 | DIE(aTHX_ "Not a CODE reference"); |
67caa1fe | 2558 | goto retry; |
a0d0e21e LW |
2559 | } |
2560 | ||
54310121 | 2561 | gimme = GIMME_V; |
67caa1fe | 2562 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
4f01c5a5 | 2563 | cv = get_db_sub(&sv, cv); |
67caa1fe | 2564 | if (!cv) |
cea2e8a9 | 2565 | DIE(aTHX_ "No DBsub routine"); |
67caa1fe | 2566 | } |
a0d0e21e | 2567 | |
4d1ff10f | 2568 | #ifdef USE_5005THREADS |
3de9ffa1 MB |
2569 | /* |
2570 | * First we need to check if the sub or method requires locking. | |
458fb581 MB |
2571 | * If so, we gain a lock on the CV, the first argument or the |
2572 | * stash (for static methods), as appropriate. This has to be | |
2573 | * inline because for FAKE_THREADS, COND_WAIT inlines code to | |
2574 | * reschedule by returning a new op. | |
3de9ffa1 | 2575 | */ |
11343788 | 2576 | MUTEX_LOCK(CvMUTEXP(cv)); |
77a005ab MB |
2577 | if (CvFLAGS(cv) & CVf_LOCKED) { |
2578 | MAGIC *mg; | |
2579 | if (CvFLAGS(cv) & CVf_METHOD) { | |
533c011a NIS |
2580 | if (SP > PL_stack_base + TOPMARK) |
2581 | sv = *(PL_stack_base + TOPMARK + 1); | |
77a005ab | 2582 | else { |
13e08037 GS |
2583 | AV *av = (AV*)PL_curpad[0]; |
2584 | if (hasargs || !av || AvFILLp(av) < 0 | |
2585 | || !(sv = AvARRAY(av)[0])) | |
2586 | { | |
2587 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
d470f89e | 2588 | DIE(aTHX_ "no argument for locked method call"); |
13e08037 | 2589 | } |
77a005ab MB |
2590 | } |
2591 | if (SvROK(sv)) | |
2592 | sv = SvRV(sv); | |
458fb581 MB |
2593 | else { |
2594 | STRLEN len; | |
2595 | char *stashname = SvPV(sv, len); | |
2596 | sv = (SV*)gv_stashpvn(stashname, len, TRUE); | |
2597 | } | |
77a005ab MB |
2598 | } |
2599 | else { | |
2600 | sv = (SV*)cv; | |
2601 | } | |
2602 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
2603 | mg = condpair_magic(sv); | |
2604 | MUTEX_LOCK(MgMUTEXP(mg)); | |
2605 | if (MgOWNER(mg) == thr) | |
2606 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
2607 | else { | |
2608 | while (MgOWNER(mg)) | |
2609 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); | |
2610 | MgOWNER(mg) = thr; | |
bf49b057 | 2611 | DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: pp_entersub lock %p\n", |
a674cc95 | 2612 | thr, sv)); |
77a005ab | 2613 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
c76ac1ee | 2614 | SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv); |
11343788 | 2615 | } |
77a005ab | 2616 | MUTEX_LOCK(CvMUTEXP(cv)); |
11343788 | 2617 | } |
3de9ffa1 MB |
2618 | /* |
2619 | * Now we have permission to enter the sub, we must distinguish | |
2620 | * four cases. (0) It's an XSUB (in which case we don't care | |
2621 | * about ownership); (1) it's ours already (and we're recursing); | |
2622 | * (2) it's free (but we may already be using a cached clone); | |
2623 | * (3) another thread owns it. Case (1) is easy: we just use it. | |
2624 | * Case (2) means we look for a clone--if we have one, use it | |
2625 | * otherwise grab ownership of cv. Case (3) means we look for a | |
2626 | * clone (for non-XSUBs) and have to create one if we don't | |
2627 | * already have one. | |
2628 | * Why look for a clone in case (2) when we could just grab | |
2629 | * ownership of cv straight away? Well, we could be recursing, | |
2630 | * i.e. we originally tried to enter cv while another thread | |
2631 | * owned it (hence we used a clone) but it has been freed up | |
2632 | * and we're now recursing into it. It may or may not be "better" | |
2633 | * to use the clone but at least CvDEPTH can be trusted. | |
2634 | */ | |
2635 | if (CvOWNER(cv) == thr || CvXSUB(cv)) | |
2636 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
11343788 | 2637 | else { |
3de9ffa1 MB |
2638 | /* Case (2) or (3) */ |
2639 | SV **svp; | |
2640 | ||
11343788 | 2641 | /* |
3de9ffa1 MB |
2642 | * XXX Might it be better to release CvMUTEXP(cv) while we |
2643 | * do the hv_fetch? We might find someone has pinched it | |
2644 | * when we look again, in which case we would be in case | |
2645 | * (3) instead of (2) so we'd have to clone. Would the fact | |
2646 | * that we released the mutex more quickly make up for this? | |
2647 | */ | |
b099ddc0 | 2648 | if ((svp = hv_fetch(thr->cvcache, (char *)cv, sizeof(cv), FALSE))) |
6ee623d5 | 2649 | { |
3de9ffa1 | 2650 | /* We already have a clone to use */ |
11343788 | 2651 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
3de9ffa1 | 2652 | cv = *(CV**)svp; |
bf49b057 | 2653 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1fd28e87 MB |
2654 | "entersub: %p already has clone %p:%s\n", |
2655 | thr, cv, SvPEEK((SV*)cv))); | |
3de9ffa1 MB |
2656 | CvOWNER(cv) = thr; |
2657 | SvREFCNT_inc(cv); | |
2658 | if (CvDEPTH(cv) == 0) | |
c76ac1ee | 2659 | SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); |
3de9ffa1 | 2660 | } |
11343788 | 2661 | else { |
3de9ffa1 MB |
2662 | /* (2) => grab ownership of cv. (3) => make clone */ |
2663 | if (!CvOWNER(cv)) { | |
2664 | CvOWNER(cv) = thr; | |
2665 | SvREFCNT_inc(cv); | |
11343788 | 2666 | MUTEX_UNLOCK(CvMUTEXP(cv)); |
bf49b057 | 2667 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
1fd28e87 MB |
2668 | "entersub: %p grabbing %p:%s in stash %s\n", |
2669 | thr, cv, SvPEEK((SV*)cv), CvSTASH(cv) ? | |
3de9ffa1 | 2670 | HvNAME(CvSTASH(cv)) : "(none)")); |
cd06dffe GS |
2671 | } |
2672 | else { | |
3de9ffa1 MB |
2673 | /* Make a new clone. */ |
2674 | CV *clonecv; | |
2675 | SvREFCNT_inc(cv); /* don't let it vanish from under us */ | |
2676 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
bf49b057 | 2677 | DEBUG_S((PerlIO_printf(Perl_debug_log, |
1fd28e87 MB |
2678 | "entersub: %p cloning %p:%s\n", |
2679 | thr, cv, SvPEEK((SV*)cv)))); | |
3de9ffa1 MB |
2680 | /* |
2681 | * We're creating a new clone so there's no race | |
2682 | * between the original MUTEX_UNLOCK and the | |
2683 | * SvREFCNT_inc since no one will be trying to undef | |
2684 | * it out from underneath us. At least, I don't think | |
2685 | * there's a race... | |
2686 | */ | |
2687 | clonecv = cv_clone(cv); | |
2688 | SvREFCNT_dec(cv); /* finished with this */ | |
199100c8 | 2689 | hv_store(thr->cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0); |
3de9ffa1 MB |
2690 | CvOWNER(clonecv) = thr; |
2691 | cv = clonecv; | |
11343788 | 2692 | SvREFCNT_inc(cv); |
11343788 | 2693 | } |
8b73bbec | 2694 | DEBUG_S(if (CvDEPTH(cv) != 0) |
bf49b057 | 2695 | PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", |
755b0776 | 2696 | CvDEPTH(cv))); |
c76ac1ee | 2697 | SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); |
11343788 | 2698 | } |
3de9ffa1 | 2699 | } |
4d1ff10f | 2700 | #endif /* USE_5005THREADS */ |
11343788 | 2701 | |
a0d0e21e | 2702 | if (CvXSUB(cv)) { |
67caa1fe | 2703 | #ifdef PERL_XSUB_OLDSTYLE |
a0d0e21e | 2704 | if (CvOLDSTYLE(cv)) { |
20ce7b12 | 2705 | I32 (*fp3)(int,int,int); |
a0d0e21e LW |
2706 | dMARK; |
2707 | register I32 items = SP - MARK; | |
67955e0c | 2708 | /* We dont worry to copy from @_. */ |
924508f0 GS |
2709 | while (SP > mark) { |
2710 | SP[1] = SP[0]; | |
2711 | SP--; | |
a0d0e21e | 2712 | } |
3280af22 | 2713 | PL_stack_sp = mark + 1; |
1d7c1841 | 2714 | fp3 = (I32(*)(int,int,int))CvXSUB(cv); |
1c846c1f | 2715 | items = (*fp3)(CvXSUBANY(cv).any_i32, |
3280af22 | 2716 | MARK - PL_stack_base + 1, |
ecfc5424 | 2717 | items); |
3280af22 | 2718 | PL_stack_sp = PL_stack_base + items; |
a0d0e21e | 2719 | } |
67caa1fe GS |
2720 | else |
2721 | #endif /* PERL_XSUB_OLDSTYLE */ | |
2722 | { | |
748a9306 LW |
2723 | I32 markix = TOPMARK; |
2724 | ||
a0d0e21e | 2725 | PUTBACK; |
67955e0c | 2726 | |
2727 | if (!hasargs) { | |
2728 | /* Need to copy @_ to stack. Alternative may be to | |
2729 | * switch stack to @_, and copy return values | |
2730 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
6d4ff0d2 MB |
2731 | AV* av; |
2732 | I32 items; | |
4d1ff10f | 2733 | #ifdef USE_5005THREADS |
533c011a | 2734 | av = (AV*)PL_curpad[0]; |
6d4ff0d2 | 2735 | #else |
3280af22 | 2736 | av = GvAV(PL_defgv); |
4d1ff10f | 2737 | #endif /* USE_5005THREADS */ |
93965878 | 2738 | items = AvFILLp(av) + 1; /* @_ is not tieable */ |
67955e0c | 2739 | |
2740 | if (items) { | |
2741 | /* Mark is at the end of the stack. */ | |
924508f0 GS |
2742 | EXTEND(SP, items); |
2743 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2744 | SP += items; | |
1c846c1f | 2745 | PUTBACK ; |
67955e0c | 2746 | } |
2747 | } | |
67caa1fe GS |
2748 | /* We assume first XSUB in &DB::sub is the called one. */ |
2749 | if (PL_curcopdb) { | |
1d7c1841 | 2750 | SAVEVPTR(PL_curcop); |
3280af22 NIS |
2751 | PL_curcop = PL_curcopdb; |
2752 | PL_curcopdb = NULL; | |
67955e0c | 2753 | } |
2754 | /* Do we need to open block here? XXXX */ | |
acfe0abc | 2755 | (void)(*CvXSUB(cv))(aTHX_ cv); |
748a9306 LW |
2756 | |
2757 | /* Enforce some sanity in scalar context. */ | |
3280af22 NIS |
2758 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { |
2759 | if (markix > PL_stack_sp - PL_stack_base) | |
2760 | *(PL_stack_base + markix) = &PL_sv_undef; | |
748a9306 | 2761 | else |
3280af22 NIS |
2762 | *(PL_stack_base + markix) = *PL_stack_sp; |
2763 | PL_stack_sp = PL_stack_base + markix; | |
748a9306 | 2764 | } |
a0d0e21e LW |
2765 | } |
2766 | LEAVE; | |
2767 | return NORMAL; | |
2768 | } | |
2769 | else { | |
2770 | dMARK; | |
2771 | register I32 items = SP - MARK; | |
a0d0e21e LW |
2772 | AV* padlist = CvPADLIST(cv); |
2773 | SV** svp = AvARRAY(padlist); | |
533c011a | 2774 | push_return(PL_op->op_next); |
a0d0e21e LW |
2775 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2776 | PUSHSUB(cx); | |
2777 | CvDEPTH(cv)++; | |
6b35e009 GS |
2778 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2779 | * that eval'' ops within this sub know the correct lexical space. | |
2780 | * Owing the speed considerations, we choose to search for the cv | |
2781 | * in doeval() instead. | |
2782 | */ | |
a0d0e21e LW |
2783 | if (CvDEPTH(cv) < 2) |
2784 | (void)SvREFCNT_inc(cv); | |
2785 | else { /* save temporaries on recursion? */ | |
1d7c1841 | 2786 | PERL_STACK_OVERFLOW_CHECK(); |
93965878 | 2787 | if (CvDEPTH(cv) > AvFILLp(padlist)) { |
a0d0e21e LW |
2788 | AV *av; |
2789 | AV *newpad = newAV(); | |
4aa0a1f7 | 2790 | SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]); |
93965878 | 2791 | I32 ix = AvFILLp((AV*)svp[1]); |
1d7c1841 | 2792 | I32 names_fill = AvFILLp((AV*)svp[0]); |
a0d0e21e | 2793 | svp = AvARRAY(svp[0]); |
748a9306 | 2794 | for ( ;ix > 0; ix--) { |
1d7c1841 | 2795 | if (names_fill >= ix && svp[ix] != &PL_sv_undef) { |
748a9306 | 2796 | char *name = SvPVX(svp[ix]); |
5f05dabc | 2797 | if ((SvFLAGS(svp[ix]) & SVf_FAKE) /* outer lexical? */ |
2798 | || *name == '&') /* anonymous code? */ | |
2799 | { | |
2800 | av_store(newpad, ix, SvREFCNT_inc(oldpad[ix])); | |
748a9306 LW |
2801 | } |
2802 | else { /* our own lexical */ | |
2803 | if (*name == '@') | |
2804 | av_store(newpad, ix, sv = (SV*)newAV()); | |
2805 | else if (*name == '%') | |
2806 | av_store(newpad, ix, sv = (SV*)newHV()); | |
2807 | else | |
2808 | av_store(newpad, ix, sv = NEWSV(0,0)); | |
2809 | SvPADMY_on(sv); | |
2810 | } | |
a0d0e21e | 2811 | } |
1d7c1841 GS |
2812 | else if (IS_PADGV(oldpad[ix]) || IS_PADCONST(oldpad[ix])) { |
2813 | av_store(newpad, ix, sv = SvREFCNT_inc(oldpad[ix])); | |
2814 | } | |
a0d0e21e | 2815 | else { |
748a9306 | 2816 | av_store(newpad, ix, sv = NEWSV(0,0)); |
a0d0e21e LW |
2817 | SvPADTMP_on(sv); |
2818 | } | |
2819 | } | |
2820 | av = newAV(); /* will be @_ */ | |
2821 | av_extend(av, 0); | |
2822 | av_store(newpad, 0, (SV*)av); | |
2823 | AvFLAGS(av) = AVf_REIFY; | |
2824 | av_store(padlist, CvDEPTH(cv), (SV*)newpad); | |
93965878 | 2825 | AvFILLp(padlist) = CvDEPTH(cv); |
a0d0e21e LW |
2826 | svp = AvARRAY(padlist); |
2827 | } | |
2828 | } | |
4d1ff10f | 2829 | #ifdef USE_5005THREADS |
6d4ff0d2 | 2830 | if (!hasargs) { |
533c011a | 2831 | AV* av = (AV*)PL_curpad[0]; |
6d4ff0d2 | 2832 | |
93965878 | 2833 | items = AvFILLp(av) + 1; |
6d4ff0d2 MB |
2834 | if (items) { |
2835 | /* Mark is at the end of the stack. */ | |
924508f0 GS |
2836 | EXTEND(SP, items); |
2837 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2838 | SP += items; | |
1c846c1f | 2839 | PUTBACK ; |
6d4ff0d2 MB |
2840 | } |
2841 | } | |
4d1ff10f | 2842 | #endif /* USE_5005THREADS */ |
1d7c1841 | 2843 | SAVEVPTR(PL_curpad); |
3280af22 | 2844 | PL_curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]); |
4d1ff10f | 2845 | #ifndef USE_5005THREADS |
6d4ff0d2 | 2846 | if (hasargs) |
4d1ff10f | 2847 | #endif /* USE_5005THREADS */ |
6d4ff0d2 MB |
2848 | { |
2849 | AV* av; | |
a0d0e21e LW |
2850 | SV** ary; |
2851 | ||
77a005ab | 2852 | #if 0 |
bf49b057 | 2853 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2854 | "%p entersub preparing @_\n", thr)); |
77a005ab | 2855 | #endif |
3280af22 | 2856 | av = (AV*)PL_curpad[0]; |
221373f0 GS |
2857 | if (AvREAL(av)) { |
2858 | /* @_ is normally not REAL--this should only ever | |
2859 | * happen when DB::sub() calls things that modify @_ */ | |
2860 | av_clear(av); | |
2861 | AvREAL_off(av); | |
2862 | AvREIFY_on(av); | |
2863 | } | |
4d1ff10f | 2864 | #ifndef USE_5005THREADS |
3280af22 NIS |
2865 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2866 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); | |
4d1ff10f | 2867 | #endif /* USE_5005THREADS */ |
7032098e | 2868 | cx->blk_sub.oldcurpad = PL_curpad; |
6d4ff0d2 | 2869 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2870 | ++MARK; |
2871 | ||
2872 | if (items > AvMAX(av) + 1) { | |
2873 | ary = AvALLOC(av); | |
2874 | if (AvARRAY(av) != ary) { | |
2875 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
2876 | SvPVX(av) = (char*)ary; | |
2877 | } | |
2878 | if (items > AvMAX(av) + 1) { | |
2879 | AvMAX(av) = items - 1; | |
2880 | Renew(ary,items,SV*); | |
2881 | AvALLOC(av) = ary; | |
2882 | SvPVX(av) = (char*)ary; | |
2883 | } | |
2884 | } | |
2885 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2886 | AvFILLp(av) = items - 1; |
1c846c1f | 2887 | |
a0d0e21e LW |
2888 | while (items--) { |
2889 | if (*MARK) | |
2890 | SvTEMP_off(*MARK); | |
2891 | MARK++; | |
2892 | } | |
2893 | } | |
4a925ff6 GS |
2894 | /* warning must come *after* we fully set up the context |
2895 | * stuff so that __WARN__ handlers can safely dounwind() | |
2896 | * if they want to | |
2897 | */ | |
2898 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) | |
2899 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) | |
2900 | sub_crush_depth(cv); | |
77a005ab | 2901 | #if 0 |
bf49b057 | 2902 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2903 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab | 2904 | #endif |
a0d0e21e LW |
2905 | RETURNOP(CvSTART(cv)); |
2906 | } | |
2907 | } | |
2908 | ||
44a8e56a | 2909 | void |
864dbfa3 | 2910 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2911 | { |
2912 | if (CvANON(cv)) | |
9014280d | 2913 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 2914 | else { |
2915 | SV* tmpstr = sv_newmortal(); | |
2916 | gv_efullname3(tmpstr, CvGV(cv), Nullch); | |
9014280d | 2917 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%s\"", |
599cee73 | 2918 | SvPVX(tmpstr)); |
44a8e56a | 2919 | } |
2920 | } | |
2921 | ||
a0d0e21e LW |
2922 | PP(pp_aelem) |
2923 | { | |
39644a26 | 2924 | dSP; |
a0d0e21e | 2925 | SV** svp; |
d804643f SC |
2926 | SV* elemsv = POPs; |
2927 | IV elem = SvIV(elemsv); | |
68dc0745 | 2928 | AV* av = (AV*)POPs; |
78f9721b | 2929 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a | 2930 | U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av)); |
be6c24e0 | 2931 | SV *sv; |
a0d0e21e | 2932 | |
e35c1634 | 2933 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
9014280d | 2934 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Use of reference \"%s\" as array index", SvPV_nolen(elemsv)); |
748a9306 | 2935 | if (elem > 0) |
3280af22 | 2936 | elem -= PL_curcop->cop_arybase; |
a0d0e21e LW |
2937 | if (SvTYPE(av) != SVt_PVAV) |
2938 | RETPUSHUNDEF; | |
68dc0745 | 2939 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2940 | if (lval) { |
3280af22 | 2941 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 2942 | SV* lv; |
2943 | if (!defer) | |
cea2e8a9 | 2944 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 2945 | lv = sv_newmortal(); |
2946 | sv_upgrade(lv, SVt_PVLV); | |
2947 | LvTYPE(lv) = 'y'; | |
14befaf4 | 2948 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 | 2949 | LvTARG(lv) = SvREFCNT_inc(av); |
2950 | LvTARGOFF(lv) = elem; | |
2951 | LvTARGLEN(lv) = 1; | |
2952 | PUSHs(lv); | |
2953 | RETURN; | |
2954 | } | |
b412ba13 DM |
2955 | if (PL_op->op_private & OPpLVAL_INTRO) { |
2956 | SV *sv; | |
161b7d16 | 2957 | save_aelem(av, elem, svp); |
b412ba13 DM |
2958 | sv = *svp; |
2959 | /* If we're localizing a tied array element, this new sv | |
2960 | * won't actually be stored in the array - so it won't get | |
2961 | * reaped when the localize ends. Ensure it gets reaped by | |
2962 | * mortifying it instead. DAPM */ | |
2963 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) | |
2964 | sv_2mortal(sv); | |
2965 | } | |
533c011a NIS |
2966 | else if (PL_op->op_private & OPpDEREF) |
2967 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 2968 | } |
3280af22 | 2969 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
2970 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2971 | sv = sv_mortalcopy(sv); | |
2972 | PUSHs(sv); | |
a0d0e21e LW |
2973 | RETURN; |
2974 | } | |
2975 | ||
02a9e968 | 2976 | void |
864dbfa3 | 2977 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 CS |
2978 | { |
2979 | if (SvGMAGICAL(sv)) | |
2980 | mg_get(sv); | |
2981 | if (!SvOK(sv)) { | |
2982 | if (SvREADONLY(sv)) | |
cea2e8a9 | 2983 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc | 2984 | if (SvTYPE(sv) < SVt_RV) |
2985 | sv_upgrade(sv, SVt_RV); | |
2986 | else if (SvTYPE(sv) >= SVt_PV) { | |
2987 | (void)SvOOK_off(sv); | |
2988 | Safefree(SvPVX(sv)); | |
2989 | SvLEN(sv) = SvCUR(sv) = 0; | |
2990 | } | |
68dc0745 | 2991 | switch (to_what) { |
5f05dabc | 2992 | case OPpDEREF_SV: |
8c52afec | 2993 | SvRV(sv) = NEWSV(355,0); |
5f05dabc | 2994 | break; |
2995 | case OPpDEREF_AV: | |
2996 | SvRV(sv) = (SV*)newAV(); | |
2997 | break; | |
2998 | case OPpDEREF_HV: | |
2999 | SvRV(sv) = (SV*)newHV(); | |
3000 | break; | |
3001 | } | |
02a9e968 CS |
3002 | SvROK_on(sv); |
3003 | SvSETMAGIC(sv); | |
3004 | } | |
3005 | } | |
3006 | ||
a0d0e21e LW |
3007 | PP(pp_method) |
3008 | { | |
39644a26 | 3009 | dSP; |
f5d5a27c CS |
3010 | SV* sv = TOPs; |
3011 | ||
3012 | if (SvROK(sv)) { | |
eda383f2 | 3013 | SV* rsv = SvRV(sv); |
f5d5a27c CS |
3014 | if (SvTYPE(rsv) == SVt_PVCV) { |
3015 | SETs(rsv); | |
3016 | RETURN; | |
3017 | } | |
3018 | } | |
3019 | ||
3020 | SETs(method_common(sv, Null(U32*))); | |
3021 | RETURN; | |
3022 | } | |
3023 | ||
3024 | PP(pp_method_named) | |
3025 | { | |
39644a26 | 3026 | dSP; |
f5d5a27c CS |
3027 | SV* sv = cSVOP->op_sv; |
3028 | U32 hash = SvUVX(sv); | |
3029 | ||
3030 | XPUSHs(method_common(sv, &hash)); | |
3031 | RETURN; | |
3032 | } | |
3033 | ||
3034 | STATIC SV * | |
3035 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
3036 | { | |
a0d0e21e LW |
3037 | SV* sv; |
3038 | SV* ob; | |
3039 | GV* gv; | |
56304f61 CS |
3040 | HV* stash; |
3041 | char* name; | |
f5d5a27c | 3042 | STRLEN namelen; |
9c5ffd7c | 3043 | char* packname = 0; |
ac91690f | 3044 | STRLEN packlen; |
a0d0e21e | 3045 | |
f5d5a27c | 3046 | name = SvPV(meth, namelen); |
3280af22 | 3047 | sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c | 3048 | |
4f1b7578 SC |
3049 | if (!sv) |
3050 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); | |
3051 | ||
16d20bd9 | 3052 | if (SvGMAGICAL(sv)) |
af09ea45 | 3053 | mg_get(sv); |
a0d0e21e | 3054 | if (SvROK(sv)) |
16d20bd9 | 3055 | ob = (SV*)SvRV(sv); |
a0d0e21e LW |
3056 | else { |
3057 | GV* iogv; | |
a0d0e21e | 3058 | |
af09ea45 | 3059 | /* this isn't a reference */ |
56304f61 | 3060 | packname = Nullch; |
a0d0e21e | 3061 | if (!SvOK(sv) || |
56304f61 | 3062 | !(packname = SvPV(sv, packlen)) || |
a0d0e21e LW |
3063 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
3064 | !(ob=(SV*)GvIO(iogv))) | |
3065 | { | |
af09ea45 | 3066 | /* this isn't the name of a filehandle either */ |
1c846c1f | 3067 | if (!packname || |
fd400ab9 | 3068 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 3069 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
3070 | : !isIDFIRST(*packname) |
3071 | )) | |
3072 | { | |
f5d5a27c CS |
3073 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
3074 | SvOK(sv) ? "without a package or object reference" | |
3075 | : "on an undefined value"); | |
834a4ddd | 3076 | } |
af09ea45 IK |
3077 | /* assume it's a package name */ |
3078 | stash = gv_stashpvn(packname, packlen, FALSE); | |
ac91690f | 3079 | goto fetch; |
a0d0e21e | 3080 | } |
af09ea45 | 3081 | /* it _is_ a filehandle name -- replace with a reference */ |
3280af22 | 3082 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e LW |
3083 | } |
3084 | ||
af09ea45 | 3085 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 GS |
3086 | if (!ob || !(SvOBJECT(ob) |
3087 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) | |
3088 | && SvOBJECT(ob)))) | |
3089 | { | |
f5d5a27c CS |
3090 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
3091 | name); | |
f0d43078 | 3092 | } |
a0d0e21e | 3093 | |
56304f61 | 3094 | stash = SvSTASH(ob); |
a0d0e21e | 3095 | |
ac91690f | 3096 | fetch: |
af09ea45 IK |
3097 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3098 | gv_fetchmethod can cope (it seems they can) */ | |
3099 | ||
f5d5a27c CS |
3100 | /* shortcut for simple names */ |
3101 | if (hashp) { | |
3102 | HE* he = hv_fetch_ent(stash, meth, 0, *hashp); | |
3103 | if (he) { | |
3104 | gv = (GV*)HeVAL(he); | |
3105 | if (isGV(gv) && GvCV(gv) && | |
3106 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) | |
3107 | return (SV*)GvCV(gv); | |
3108 | } | |
3109 | } | |
3110 | ||
ac91690f | 3111 | gv = gv_fetchmethod(stash, name); |
af09ea45 | 3112 | |
56304f61 | 3113 | if (!gv) { |
af09ea45 IK |
3114 | /* This code tries to figure out just what went wrong with |
3115 | gv_fetchmethod. It therefore needs to duplicate a lot of | |
3116 | the internals of that function. We can't move it inside | |
3117 | Perl_gv_fetchmethod_autoload(), however, since that would | |
3118 | cause UNIVERSAL->can("NoSuchPackage::foo") to croak, and we | |
3119 | don't want that. | |
3120 | */ | |
56304f61 CS |
3121 | char* leaf = name; |
3122 | char* sep = Nullch; | |
3123 | char* p; | |
3124 | ||
3125 | for (p = name; *p; p++) { | |
3126 | if (*p == '\'') | |
3127 | sep = p, leaf = p + 1; | |
3128 | else if (*p == ':' && *(p + 1) == ':') | |
3129 | sep = p, leaf = p + 2; | |
3130 | } | |
3131 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { | |
af09ea45 IK |
3132 | /* the method name is unqualified or starts with SUPER:: */ |
3133 | packname = sep ? CopSTASHPV(PL_curcop) : | |
3134 | stash ? HvNAME(stash) : packname; | |
56304f61 CS |
3135 | packlen = strlen(packname); |
3136 | } | |
3137 | else { | |
af09ea45 | 3138 | /* the method name is qualified */ |
56304f61 CS |
3139 | packname = name; |
3140 | packlen = sep - name; | |
3141 | } | |
af09ea45 IK |
3142 | |
3143 | /* we're relying on gv_fetchmethod not autovivifying the stash */ | |
3144 | if (gv_stashpvn(packname, packlen, FALSE)) { | |
c1899e02 | 3145 | Perl_croak(aTHX_ |
af09ea45 IK |
3146 | "Can't locate object method \"%s\" via package \"%.*s\"", |
3147 | leaf, (int)packlen, packname); | |
c1899e02 GS |
3148 | } |
3149 | else { | |
3150 | Perl_croak(aTHX_ | |
af09ea45 IK |
3151 | "Can't locate object method \"%s\" via package \"%.*s\"" |
3152 | " (perhaps you forgot to load \"%.*s\"?)", | |
3153 | leaf, (int)packlen, packname, (int)packlen, packname); | |
c1899e02 | 3154 | } |
56304f61 | 3155 | } |
f5d5a27c | 3156 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e | 3157 | } |
22239a37 | 3158 | |
4d1ff10f | 3159 | #ifdef USE_5005THREADS |
51371543 | 3160 | static void |
acfe0abc | 3161 | unset_cvowner(pTHX_ void *cvarg) |
51371543 GS |
3162 | { |
3163 | register CV* cv = (CV *) cvarg; | |
51371543 | 3164 | |
bf49b057 | 3165 | DEBUG_S((PerlIO_printf(Perl_debug_log, "%p unsetting CvOWNER of %p:%s\n", |
51371543 GS |
3166 | thr, cv, SvPEEK((SV*)cv)))); |
3167 | MUTEX_LOCK(CvMUTEXP(cv)); | |
3168 | DEBUG_S(if (CvDEPTH(cv) != 0) | |
bf49b057 | 3169 | PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", |
755b0776 | 3170 | CvDEPTH(cv))); |
51371543 GS |
3171 | assert(thr == CvOWNER(cv)); |
3172 | CvOWNER(cv) = 0; | |
3173 | MUTEX_UNLOCK(CvMUTEXP(cv)); | |
3174 | SvREFCNT_dec(cv); | |
3175 | } | |
4d1ff10f | 3176 | #endif /* USE_5005THREADS */ |