Commit | Line | Data |
a0d0e21e |
1 | /* pp_hot.c |
2 | * |
4bb101f2 |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4 | * 2000, 2001, 2002, 2003, by Larry Wall and others |
a0d0e21e |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. |
8 | * |
9 | */ |
10 | |
11 | /* |
12 | * Then he heard Merry change the note, and up went the Horn-cry of Buckland, |
13 | * shaking the air. |
14 | * |
15 | * Awake! Awake! Fear, Fire, Foes! Awake! |
16 | * Fire, Foes! Awake! |
17 | */ |
18 | |
19 | #include "EXTERN.h" |
864dbfa3 |
20 | #define PERL_IN_PP_HOT_C |
a0d0e21e |
21 | #include "perl.h" |
22 | |
23 | /* Hot code. */ |
24 | |
25 | PP(pp_const) |
26 | { |
39644a26 |
27 | dSP; |
1d7c1841 |
28 | XPUSHs(cSVOP_sv); |
a0d0e21e |
29 | RETURN; |
30 | } |
31 | |
32 | PP(pp_nextstate) |
33 | { |
533c011a |
34 | PL_curcop = (COP*)PL_op; |
a0d0e21e |
35 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 |
36 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e |
37 | FREETMPS; |
38 | return NORMAL; |
39 | } |
40 | |
41 | PP(pp_gvsv) |
42 | { |
39644a26 |
43 | dSP; |
924508f0 |
44 | EXTEND(SP,1); |
533c011a |
45 | if (PL_op->op_private & OPpLVAL_INTRO) |
1d7c1841 |
46 | PUSHs(save_scalar(cGVOP_gv)); |
a0d0e21e |
47 | else |
1d7c1841 |
48 | PUSHs(GvSV(cGVOP_gv)); |
a0d0e21e |
49 | RETURN; |
50 | } |
51 | |
52 | PP(pp_null) |
53 | { |
54 | return NORMAL; |
55 | } |
56 | |
7399586d |
57 | PP(pp_setstate) |
58 | { |
59 | PL_curcop = (COP*)PL_op; |
60 | return NORMAL; |
61 | } |
62 | |
a0d0e21e |
63 | PP(pp_pushmark) |
64 | { |
3280af22 |
65 | PUSHMARK(PL_stack_sp); |
a0d0e21e |
66 | return NORMAL; |
67 | } |
68 | |
69 | PP(pp_stringify) |
70 | { |
39644a26 |
71 | dSP; dTARGET; |
6050d10e |
72 | sv_copypv(TARG,TOPs); |
a0d0e21e |
73 | SETTARG; |
74 | RETURN; |
75 | } |
76 | |
77 | PP(pp_gv) |
78 | { |
39644a26 |
79 | dSP; |
1d7c1841 |
80 | XPUSHs((SV*)cGVOP_gv); |
a0d0e21e |
81 | RETURN; |
82 | } |
83 | |
84 | PP(pp_and) |
85 | { |
39644a26 |
86 | dSP; |
a0d0e21e |
87 | if (!SvTRUE(TOPs)) |
88 | RETURN; |
89 | else { |
90 | --SP; |
91 | RETURNOP(cLOGOP->op_other); |
92 | } |
93 | } |
94 | |
95 | PP(pp_sassign) |
96 | { |
39644a26 |
97 | dSP; dPOPTOPssrl; |
748a9306 |
98 | |
533c011a |
99 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
a0d0e21e |
100 | SV *temp; |
101 | temp = left; left = right; right = temp; |
102 | } |
3280af22 |
103 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e |
104 | TAINT_NOT; |
54310121 |
105 | SvSetMagicSV(right, left); |
a0d0e21e |
106 | SETs(right); |
107 | RETURN; |
108 | } |
109 | |
110 | PP(pp_cond_expr) |
111 | { |
39644a26 |
112 | dSP; |
a0d0e21e |
113 | if (SvTRUEx(POPs)) |
1a67a97c |
114 | RETURNOP(cLOGOP->op_other); |
a0d0e21e |
115 | else |
1a67a97c |
116 | RETURNOP(cLOGOP->op_next); |
a0d0e21e |
117 | } |
118 | |
119 | PP(pp_unstack) |
120 | { |
121 | I32 oldsave; |
122 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 |
123 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e |
124 | FREETMPS; |
3280af22 |
125 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e |
126 | LEAVE_SCOPE(oldsave); |
127 | return NORMAL; |
128 | } |
129 | |
a0d0e21e |
130 | PP(pp_concat) |
131 | { |
39644a26 |
132 | dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 |
133 | { |
134 | dPOPTOPssrl; |
8d6d96c1 |
135 | STRLEN llen; |
136 | char* lpv; |
137 | bool lbyte; |
138 | STRLEN rlen; |
139 | char* rpv = SvPV(right, rlen); /* mg_get(right) happens here */ |
db79b45b |
140 | bool rbyte = !SvUTF8(right), rcopied = FALSE; |
8d6d96c1 |
141 | |
142 | if (TARG == right && right != left) { |
143 | right = sv_2mortal(newSVpvn(rpv, rlen)); |
144 | rpv = SvPV(right, rlen); /* no point setting UTF8 here */ |
db79b45b |
145 | rcopied = TRUE; |
8d6d96c1 |
146 | } |
7889fe52 |
147 | |
8d6d96c1 |
148 | if (TARG != left) { |
149 | lpv = SvPV(left, llen); /* mg_get(left) may happen here */ |
150 | lbyte = !SvUTF8(left); |
151 | sv_setpvn(TARG, lpv, llen); |
152 | if (!lbyte) |
153 | SvUTF8_on(TARG); |
154 | else |
155 | SvUTF8_off(TARG); |
156 | } |
157 | else { /* TARG == left */ |
158 | if (SvGMAGICAL(left)) |
159 | mg_get(left); /* or mg_get(left) may happen here */ |
160 | if (!SvOK(TARG)) |
161 | sv_setpv(left, ""); |
162 | lpv = SvPV_nomg(left, llen); |
163 | lbyte = !SvUTF8(left); |
164 | } |
a12c0f56 |
165 | |
fd15e783 |
166 | #if defined(PERL_Y2KWARN) |
167 | if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K) && SvOK(TARG)) { |
8d6d96c1 |
168 | if (llen >= 2 && lpv[llen - 2] == '1' && lpv[llen - 1] == '9' |
169 | && (llen == 2 || !isDIGIT(lpv[llen - 3]))) |
170 | { |
9014280d |
171 | Perl_warner(aTHX_ packWARN(WARN_Y2K), "Possible Y2K bug: %s", |
8d6d96c1 |
172 | "about to append an integer to '19'"); |
173 | } |
fd15e783 |
174 | } |
175 | #endif |
176 | |
8d6d96c1 |
177 | if (lbyte != rbyte) { |
178 | if (lbyte) |
179 | sv_utf8_upgrade_nomg(TARG); |
180 | else { |
db79b45b |
181 | if (!rcopied) |
182 | right = sv_2mortal(newSVpvn(rpv, rlen)); |
8d6d96c1 |
183 | sv_utf8_upgrade_nomg(right); |
184 | rpv = SvPV(right, rlen); |
69b47968 |
185 | } |
a0d0e21e |
186 | } |
8d6d96c1 |
187 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 |
188 | |
a0d0e21e |
189 | SETTARG; |
190 | RETURN; |
748a9306 |
191 | } |
a0d0e21e |
192 | } |
193 | |
194 | PP(pp_padsv) |
195 | { |
39644a26 |
196 | dSP; dTARGET; |
a0d0e21e |
197 | XPUSHs(TARG); |
533c011a |
198 | if (PL_op->op_flags & OPf_MOD) { |
199 | if (PL_op->op_private & OPpLVAL_INTRO) |
dd2155a4 |
200 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); |
533c011a |
201 | else if (PL_op->op_private & OPpDEREF) { |
8ec5e241 |
202 | PUTBACK; |
dd2155a4 |
203 | vivify_ref(PAD_SVl(PL_op->op_targ), PL_op->op_private & OPpDEREF); |
8ec5e241 |
204 | SPAGAIN; |
205 | } |
4633a7c4 |
206 | } |
a0d0e21e |
207 | RETURN; |
208 | } |
209 | |
210 | PP(pp_readline) |
211 | { |
f5284f61 |
212 | tryAMAGICunTARGET(iter, 0); |
3280af22 |
213 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 |
214 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f |
215 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 |
216 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 |
217 | else { |
f5284f61 |
218 | dSP; |
219 | XPUSHs((SV*)PL_last_in_gv); |
220 | PUTBACK; |
cea2e8a9 |
221 | pp_rv2gv(); |
f5284f61 |
222 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 |
223 | } |
224 | } |
a0d0e21e |
225 | return do_readline(); |
226 | } |
227 | |
228 | PP(pp_eq) |
229 | { |
39644a26 |
230 | dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f |
231 | #ifndef NV_PRESERVES_UV |
232 | if (SvROK(TOPs) && SvROK(TOPm1s)) { |
e61d22ef |
233 | SP--; |
234 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); |
4c9fe80f |
235 | RETURN; |
236 | } |
237 | #endif |
28e5dec8 |
238 | #ifdef PERL_PRESERVE_IVUV |
239 | SvIV_please(TOPs); |
240 | if (SvIOK(TOPs)) { |
4c9fe80f |
241 | /* Unless the left argument is integer in range we are going |
242 | to have to use NV maths. Hence only attempt to coerce the |
243 | right argument if we know the left is integer. */ |
28e5dec8 |
244 | SvIV_please(TOPm1s); |
245 | if (SvIOK(TOPm1s)) { |
246 | bool auvok = SvUOK(TOPm1s); |
247 | bool buvok = SvUOK(TOPs); |
a12c0f56 |
248 | |
1605159e |
249 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
250 | /* Casting IV to UV before comparison isn't going to matter |
251 | on 2s complement. On 1s complement or sign&magnitude |
252 | (if we have any of them) it could to make negative zero |
253 | differ from normal zero. As I understand it. (Need to |
254 | check - is negative zero implementation defined behaviour |
255 | anyway?). NWC */ |
256 | UV buv = SvUVX(POPs); |
257 | UV auv = SvUVX(TOPs); |
28e5dec8 |
258 | |
28e5dec8 |
259 | SETs(boolSV(auv == buv)); |
260 | RETURN; |
261 | } |
262 | { /* ## Mixed IV,UV ## */ |
1605159e |
263 | SV *ivp, *uvp; |
28e5dec8 |
264 | IV iv; |
28e5dec8 |
265 | |
1605159e |
266 | /* == is commutative so doesn't matter which is left or right */ |
28e5dec8 |
267 | if (auvok) { |
1605159e |
268 | /* top of stack (b) is the iv */ |
269 | ivp = *SP; |
270 | uvp = *--SP; |
271 | } else { |
272 | uvp = *SP; |
273 | ivp = *--SP; |
274 | } |
275 | iv = SvIVX(ivp); |
276 | if (iv < 0) { |
277 | /* As uv is a UV, it's >0, so it cannot be == */ |
278 | SETs(&PL_sv_no); |
279 | RETURN; |
280 | } |
28e5dec8 |
281 | /* we know iv is >= 0 */ |
1605159e |
282 | SETs(boolSV((UV)iv == SvUVX(uvp))); |
28e5dec8 |
283 | RETURN; |
284 | } |
285 | } |
286 | } |
287 | #endif |
a0d0e21e |
288 | { |
289 | dPOPnv; |
54310121 |
290 | SETs(boolSV(TOPn == value)); |
a0d0e21e |
291 | RETURN; |
292 | } |
293 | } |
294 | |
295 | PP(pp_preinc) |
296 | { |
39644a26 |
297 | dSP; |
3510b4a1 |
298 | if (SvTYPE(TOPs) > SVt_PVLV) |
d470f89e |
299 | DIE(aTHX_ PL_no_modify); |
3510b4a1 |
300 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
301 | && SvIVX(TOPs) != IV_MAX) |
55497cff |
302 | { |
748a9306 |
303 | ++SvIVX(TOPs); |
55497cff |
304 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 |
305 | } |
28e5dec8 |
306 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 |
307 | sv_inc(TOPs); |
a0d0e21e |
308 | SvSETMAGIC(TOPs); |
309 | return NORMAL; |
310 | } |
311 | |
312 | PP(pp_or) |
313 | { |
39644a26 |
314 | dSP; |
a0d0e21e |
315 | if (SvTRUE(TOPs)) |
316 | RETURN; |
317 | else { |
318 | --SP; |
319 | RETURNOP(cLOGOP->op_other); |
320 | } |
321 | } |
322 | |
c963b151 |
323 | PP(pp_dor) |
324 | { |
325 | /* Most of this is lifted straight from pp_defined */ |
326 | dSP; |
327 | register SV* sv; |
328 | |
329 | sv = TOPs; |
330 | if (!sv || !SvANY(sv)) { |
331 | --SP; |
332 | RETURNOP(cLOGOP->op_other); |
333 | } |
334 | |
335 | switch (SvTYPE(sv)) { |
336 | case SVt_PVAV: |
337 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) |
338 | RETURN; |
339 | break; |
340 | case SVt_PVHV: |
341 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) |
342 | RETURN; |
343 | break; |
344 | case SVt_PVCV: |
345 | if (CvROOT(sv) || CvXSUB(sv)) |
346 | RETURN; |
347 | break; |
348 | default: |
349 | if (SvGMAGICAL(sv)) |
350 | mg_get(sv); |
351 | if (SvOK(sv)) |
352 | RETURN; |
353 | } |
354 | |
355 | --SP; |
356 | RETURNOP(cLOGOP->op_other); |
357 | } |
358 | |
a0d0e21e |
359 | PP(pp_add) |
360 | { |
39644a26 |
361 | dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 |
362 | useleft = USE_LEFT(TOPm1s); |
363 | #ifdef PERL_PRESERVE_IVUV |
364 | /* We must see if we can perform the addition with integers if possible, |
365 | as the integer code detects overflow while the NV code doesn't. |
366 | If either argument hasn't had a numeric conversion yet attempt to get |
367 | the IV. It's important to do this now, rather than just assuming that |
368 | it's not IOK as a PV of "9223372036854775806" may not take well to NV |
369 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to |
370 | integer in case the second argument is IV=9223372036854775806 |
371 | We can (now) rely on sv_2iv to do the right thing, only setting the |
372 | public IOK flag if the value in the NV (or PV) slot is truly integer. |
373 | |
374 | A side effect is that this also aggressively prefers integer maths over |
7dca457a |
375 | fp maths for integer values. |
376 | |
a00b5bd3 |
377 | How to detect overflow? |
7dca457a |
378 | |
379 | C 99 section 6.2.6.1 says |
380 | |
381 | The range of nonnegative values of a signed integer type is a subrange |
382 | of the corresponding unsigned integer type, and the representation of |
383 | the same value in each type is the same. A computation involving |
384 | unsigned operands can never overflow, because a result that cannot be |
385 | represented by the resulting unsigned integer type is reduced modulo |
386 | the number that is one greater than the largest value that can be |
387 | represented by the resulting type. |
388 | |
389 | (the 9th paragraph) |
390 | |
391 | which I read as "unsigned ints wrap." |
392 | |
393 | signed integer overflow seems to be classed as "exception condition" |
394 | |
395 | If an exceptional condition occurs during the evaluation of an |
396 | expression (that is, if the result is not mathematically defined or not |
397 | in the range of representable values for its type), the behavior is |
398 | undefined. |
399 | |
400 | (6.5, the 5th paragraph) |
401 | |
402 | I had assumed that on 2s complement machines signed arithmetic would |
403 | wrap, hence coded pp_add and pp_subtract on the assumption that |
404 | everything perl builds on would be happy. After much wailing and |
405 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, |
406 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- |
407 | unsigned code below is actually shorter than the old code. :-) |
408 | */ |
409 | |
28e5dec8 |
410 | SvIV_please(TOPs); |
411 | if (SvIOK(TOPs)) { |
412 | /* Unless the left argument is integer in range we are going to have to |
413 | use NV maths. Hence only attempt to coerce the right argument if |
414 | we know the left is integer. */ |
9c5ffd7c |
415 | register UV auv = 0; |
416 | bool auvok = FALSE; |
7dca457a |
417 | bool a_valid = 0; |
418 | |
28e5dec8 |
419 | if (!useleft) { |
7dca457a |
420 | auv = 0; |
421 | a_valid = auvok = 1; |
422 | /* left operand is undef, treat as zero. + 0 is identity, |
423 | Could SETi or SETu right now, but space optimise by not adding |
424 | lots of code to speed up what is probably a rarish case. */ |
425 | } else { |
426 | /* Left operand is defined, so is it IV? */ |
427 | SvIV_please(TOPm1s); |
428 | if (SvIOK(TOPm1s)) { |
429 | if ((auvok = SvUOK(TOPm1s))) |
430 | auv = SvUVX(TOPm1s); |
431 | else { |
432 | register IV aiv = SvIVX(TOPm1s); |
433 | if (aiv >= 0) { |
434 | auv = aiv; |
435 | auvok = 1; /* Now acting as a sign flag. */ |
436 | } else { /* 2s complement assumption for IV_MIN */ |
437 | auv = (UV)-aiv; |
438 | } |
439 | } |
440 | a_valid = 1; |
28e5dec8 |
441 | } |
442 | } |
7dca457a |
443 | if (a_valid) { |
444 | bool result_good = 0; |
445 | UV result; |
446 | register UV buv; |
28e5dec8 |
447 | bool buvok = SvUOK(TOPs); |
a00b5bd3 |
448 | |
7dca457a |
449 | if (buvok) |
450 | buv = SvUVX(TOPs); |
451 | else { |
452 | register IV biv = SvIVX(TOPs); |
453 | if (biv >= 0) { |
454 | buv = biv; |
455 | buvok = 1; |
456 | } else |
457 | buv = (UV)-biv; |
458 | } |
459 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, |
602f51c4 |
460 | else "IV" now, independent of how it came in. |
7dca457a |
461 | if a, b represents positive, A, B negative, a maps to -A etc |
462 | a + b => (a + b) |
463 | A + b => -(a - b) |
464 | a + B => (a - b) |
465 | A + B => -(a + b) |
466 | all UV maths. negate result if A negative. |
467 | add if signs same, subtract if signs differ. */ |
468 | |
469 | if (auvok ^ buvok) { |
470 | /* Signs differ. */ |
471 | if (auv >= buv) { |
472 | result = auv - buv; |
473 | /* Must get smaller */ |
474 | if (result <= auv) |
475 | result_good = 1; |
476 | } else { |
477 | result = buv - auv; |
478 | if (result <= buv) { |
479 | /* result really should be -(auv-buv). as its negation |
480 | of true value, need to swap our result flag */ |
481 | auvok = !auvok; |
482 | result_good = 1; |
28e5dec8 |
483 | } |
484 | } |
7dca457a |
485 | } else { |
486 | /* Signs same */ |
487 | result = auv + buv; |
488 | if (result >= auv) |
489 | result_good = 1; |
490 | } |
491 | if (result_good) { |
492 | SP--; |
493 | if (auvok) |
28e5dec8 |
494 | SETu( result ); |
7dca457a |
495 | else { |
496 | /* Negate result */ |
497 | if (result <= (UV)IV_MIN) |
498 | SETi( -(IV)result ); |
499 | else { |
500 | /* result valid, but out of range for IV. */ |
501 | SETn( -(NV)result ); |
28e5dec8 |
502 | } |
503 | } |
7dca457a |
504 | RETURN; |
505 | } /* Overflow, drop through to NVs. */ |
28e5dec8 |
506 | } |
507 | } |
508 | #endif |
a0d0e21e |
509 | { |
28e5dec8 |
510 | dPOPnv; |
511 | if (!useleft) { |
512 | /* left operand is undef, treat as zero. + 0.0 is identity. */ |
513 | SETn(value); |
514 | RETURN; |
515 | } |
516 | SETn( value + TOPn ); |
517 | RETURN; |
a0d0e21e |
518 | } |
519 | } |
520 | |
521 | PP(pp_aelemfast) |
522 | { |
39644a26 |
523 | dSP; |
1d7c1841 |
524 | AV *av = GvAV(cGVOP_gv); |
533c011a |
525 | U32 lval = PL_op->op_flags & OPf_MOD; |
526 | SV** svp = av_fetch(av, PL_op->op_private, lval); |
3280af22 |
527 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 |
528 | EXTEND(SP, 1); |
be6c24e0 |
529 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
530 | sv = sv_mortalcopy(sv); |
531 | PUSHs(sv); |
a0d0e21e |
532 | RETURN; |
533 | } |
534 | |
535 | PP(pp_join) |
536 | { |
39644a26 |
537 | dSP; dMARK; dTARGET; |
a0d0e21e |
538 | MARK++; |
539 | do_join(TARG, *MARK, MARK, SP); |
540 | SP = MARK; |
541 | SETs(TARG); |
542 | RETURN; |
543 | } |
544 | |
545 | PP(pp_pushre) |
546 | { |
39644a26 |
547 | dSP; |
44a8e56a |
548 | #ifdef DEBUGGING |
549 | /* |
550 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs |
551 | * will be enough to hold an OP*. |
552 | */ |
553 | SV* sv = sv_newmortal(); |
554 | sv_upgrade(sv, SVt_PVLV); |
555 | LvTYPE(sv) = '/'; |
533c011a |
556 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a |
557 | XPUSHs(sv); |
558 | #else |
6b88bc9c |
559 | XPUSHs((SV*)PL_op); |
44a8e56a |
560 | #endif |
a0d0e21e |
561 | RETURN; |
562 | } |
563 | |
564 | /* Oversized hot code. */ |
565 | |
566 | PP(pp_print) |
567 | { |
39644a26 |
568 | dSP; dMARK; dORIGMARK; |
a0d0e21e |
569 | GV *gv; |
570 | IO *io; |
760ac839 |
571 | register PerlIO *fp; |
236988e4 |
572 | MAGIC *mg; |
a0d0e21e |
573 | |
533c011a |
574 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
575 | gv = (GV*)*++MARK; |
576 | else |
3280af22 |
577 | gv = PL_defoutgv; |
5b468f54 |
578 | |
579 | if (gv && (io = GvIO(gv)) |
580 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) |
581 | { |
01bb7c6d |
582 | had_magic: |
68dc0745 |
583 | if (MARK == ORIGMARK) { |
1c846c1f |
584 | /* If using default handle then we need to make space to |
a60c0954 |
585 | * pass object as 1st arg, so move other args up ... |
586 | */ |
4352c267 |
587 | MEXTEND(SP, 1); |
68dc0745 |
588 | ++MARK; |
589 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); |
590 | ++SP; |
591 | } |
592 | PUSHMARK(MARK - 1); |
5b468f54 |
593 | *MARK = SvTIED_obj((SV*)io, mg); |
68dc0745 |
594 | PUTBACK; |
236988e4 |
595 | ENTER; |
864dbfa3 |
596 | call_method("PRINT", G_SCALAR); |
236988e4 |
597 | LEAVE; |
598 | SPAGAIN; |
68dc0745 |
599 | MARK = ORIGMARK + 1; |
600 | *MARK = *SP; |
601 | SP = MARK; |
236988e4 |
602 | RETURN; |
603 | } |
a0d0e21e |
604 | if (!(io = GvIO(gv))) { |
5b468f54 |
605 | if ((GvEGV(gv)) && (io = GvIO(GvEGV(gv))) |
606 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) |
01bb7c6d |
607 | goto had_magic; |
2dd78f96 |
608 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
609 | report_evil_fh(gv, io, PL_op->op_type); |
93189314 |
610 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e |
611 | goto just_say_no; |
612 | } |
613 | else if (!(fp = IoOFP(io))) { |
599cee73 |
614 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 |
615 | if (IoIFP(io)) |
616 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); |
2dd78f96 |
617 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f |
618 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e |
619 | } |
93189314 |
620 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e |
621 | goto just_say_no; |
622 | } |
623 | else { |
624 | MARK++; |
7889fe52 |
625 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e |
626 | while (MARK <= SP) { |
627 | if (!do_print(*MARK, fp)) |
628 | break; |
629 | MARK++; |
630 | if (MARK <= SP) { |
7889fe52 |
631 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e |
632 | MARK--; |
633 | break; |
634 | } |
635 | } |
636 | } |
637 | } |
638 | else { |
639 | while (MARK <= SP) { |
640 | if (!do_print(*MARK, fp)) |
641 | break; |
642 | MARK++; |
643 | } |
644 | } |
645 | if (MARK <= SP) |
646 | goto just_say_no; |
647 | else { |
7889fe52 |
648 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
649 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
a0d0e21e |
650 | goto just_say_no; |
651 | |
652 | if (IoFLAGS(io) & IOf_FLUSH) |
760ac839 |
653 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e |
654 | goto just_say_no; |
655 | } |
656 | } |
657 | SP = ORIGMARK; |
3280af22 |
658 | PUSHs(&PL_sv_yes); |
a0d0e21e |
659 | RETURN; |
660 | |
661 | just_say_no: |
662 | SP = ORIGMARK; |
3280af22 |
663 | PUSHs(&PL_sv_undef); |
a0d0e21e |
664 | RETURN; |
665 | } |
666 | |
667 | PP(pp_rv2av) |
668 | { |
39644a26 |
669 | dSP; dTOPss; |
a0d0e21e |
670 | AV *av; |
671 | |
672 | if (SvROK(sv)) { |
673 | wasref: |
f5284f61 |
674 | tryAMAGICunDEREF(to_av); |
675 | |
a0d0e21e |
676 | av = (AV*)SvRV(sv); |
677 | if (SvTYPE(av) != SVt_PVAV) |
cea2e8a9 |
678 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a |
679 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
680 | SETs((SV*)av); |
a0d0e21e |
681 | RETURN; |
682 | } |
78f9721b |
683 | else if (LVRET) { |
684 | if (GIMME == G_SCALAR) |
685 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); |
686 | SETs((SV*)av); |
687 | RETURN; |
688 | } |
82d03984 |
689 | else if (PL_op->op_flags & OPf_MOD |
690 | && PL_op->op_private & OPpLVAL_INTRO) |
691 | Perl_croak(aTHX_ PL_no_localize_ref); |
a0d0e21e |
692 | } |
693 | else { |
694 | if (SvTYPE(sv) == SVt_PVAV) { |
695 | av = (AV*)sv; |
533c011a |
696 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
697 | SETs((SV*)av); |
a0d0e21e |
698 | RETURN; |
699 | } |
78f9721b |
700 | else if (LVRET) { |
701 | if (GIMME == G_SCALAR) |
702 | Perl_croak(aTHX_ "Can't return array to lvalue" |
703 | " scalar context"); |
704 | SETs((SV*)av); |
705 | RETURN; |
706 | } |
a0d0e21e |
707 | } |
708 | else { |
67955e0c |
709 | GV *gv; |
1c846c1f |
710 | |
a0d0e21e |
711 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
712 | char *sym; |
c9d5ac95 |
713 | STRLEN len; |
748a9306 |
714 | |
a0d0e21e |
715 | if (SvGMAGICAL(sv)) { |
716 | mg_get(sv); |
717 | if (SvROK(sv)) |
718 | goto wasref; |
719 | } |
720 | if (!SvOK(sv)) { |
533c011a |
721 | if (PL_op->op_flags & OPf_REF || |
722 | PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
723 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 |
724 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 |
725 | report_uninit(); |
f5284f61 |
726 | if (GIMME == G_ARRAY) { |
c2444246 |
727 | (void)POPs; |
4633a7c4 |
728 | RETURN; |
f5284f61 |
729 | } |
730 | RETSETUNDEF; |
a0d0e21e |
731 | } |
c9d5ac95 |
732 | sym = SvPV(sv,len); |
35cd451c |
733 | if ((PL_op->op_flags & OPf_SPECIAL) && |
734 | !(PL_op->op_flags & OPf_MOD)) |
735 | { |
736 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV); |
c9d5ac95 |
737 | if (!gv |
738 | && (!is_gv_magical(sym,len,0) |
739 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV)))) |
740 | { |
35cd451c |
741 | RETSETUNDEF; |
c9d5ac95 |
742 | } |
35cd451c |
743 | } |
744 | else { |
745 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
746 | DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); |
35cd451c |
747 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
748 | } |
749 | } |
750 | else { |
67955e0c |
751 | gv = (GV*)sv; |
a0d0e21e |
752 | } |
67955e0c |
753 | av = GvAVn(gv); |
533c011a |
754 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c |
755 | av = save_ary(gv); |
533c011a |
756 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
757 | SETs((SV*)av); |
a0d0e21e |
758 | RETURN; |
759 | } |
78f9721b |
760 | else if (LVRET) { |
761 | if (GIMME == G_SCALAR) |
762 | Perl_croak(aTHX_ "Can't return array to lvalue" |
763 | " scalar context"); |
764 | SETs((SV*)av); |
765 | RETURN; |
766 | } |
a0d0e21e |
767 | } |
768 | } |
769 | |
770 | if (GIMME == G_ARRAY) { |
771 | I32 maxarg = AvFILL(av) + 1; |
c2444246 |
772 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f |
773 | EXTEND(SP, maxarg); |
93965878 |
774 | if (SvRMAGICAL(av)) { |
1c846c1f |
775 | U32 i; |
eb160463 |
776 | for (i=0; i < (U32)maxarg; i++) { |
93965878 |
777 | SV **svp = av_fetch(av, i, FALSE); |
3280af22 |
778 | SP[i+1] = (svp) ? *svp : &PL_sv_undef; |
93965878 |
779 | } |
1c846c1f |
780 | } |
93965878 |
781 | else { |
782 | Copy(AvARRAY(av), SP+1, maxarg, SV*); |
783 | } |
a0d0e21e |
784 | SP += maxarg; |
785 | } |
c754c3d7 |
786 | else if (GIMME_V == G_SCALAR) { |
a0d0e21e |
787 | dTARGET; |
788 | I32 maxarg = AvFILL(av) + 1; |
f5284f61 |
789 | SETi(maxarg); |
a0d0e21e |
790 | } |
791 | RETURN; |
792 | } |
793 | |
794 | PP(pp_rv2hv) |
795 | { |
39644a26 |
796 | dSP; dTOPss; |
a0d0e21e |
797 | HV *hv; |
126c71c8 |
798 | I32 gimme = GIMME_V; |
a0d0e21e |
799 | |
800 | if (SvROK(sv)) { |
801 | wasref: |
f5284f61 |
802 | tryAMAGICunDEREF(to_hv); |
803 | |
a0d0e21e |
804 | hv = (HV*)SvRV(sv); |
6d822dc4 |
805 | if (SvTYPE(hv) != SVt_PVHV) |
cea2e8a9 |
806 | DIE(aTHX_ "Not a HASH reference"); |
533c011a |
807 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
808 | SETs((SV*)hv); |
809 | RETURN; |
810 | } |
78f9721b |
811 | else if (LVRET) { |
126c71c8 |
812 | if (GIMME != G_SCALAR) |
78f9721b |
813 | Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); |
814 | SETs((SV*)hv); |
815 | RETURN; |
816 | } |
82d03984 |
817 | else if (PL_op->op_flags & OPf_MOD |
818 | && PL_op->op_private & OPpLVAL_INTRO) |
819 | Perl_croak(aTHX_ PL_no_localize_ref); |
a0d0e21e |
820 | } |
821 | else { |
6d822dc4 |
822 | if (SvTYPE(sv) == SVt_PVHV) { |
a0d0e21e |
823 | hv = (HV*)sv; |
533c011a |
824 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
825 | SETs((SV*)hv); |
826 | RETURN; |
827 | } |
78f9721b |
828 | else if (LVRET) { |
829 | if (GIMME == G_SCALAR) |
830 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
831 | " scalar context"); |
832 | SETs((SV*)hv); |
833 | RETURN; |
834 | } |
a0d0e21e |
835 | } |
836 | else { |
67955e0c |
837 | GV *gv; |
1c846c1f |
838 | |
a0d0e21e |
839 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
840 | char *sym; |
c9d5ac95 |
841 | STRLEN len; |
748a9306 |
842 | |
a0d0e21e |
843 | if (SvGMAGICAL(sv)) { |
844 | mg_get(sv); |
845 | if (SvROK(sv)) |
846 | goto wasref; |
847 | } |
848 | if (!SvOK(sv)) { |
533c011a |
849 | if (PL_op->op_flags & OPf_REF || |
850 | PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
851 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 |
852 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 |
853 | report_uninit(); |
4633a7c4 |
854 | if (GIMME == G_ARRAY) { |
855 | SP--; |
856 | RETURN; |
857 | } |
a0d0e21e |
858 | RETSETUNDEF; |
859 | } |
c9d5ac95 |
860 | sym = SvPV(sv,len); |
35cd451c |
861 | if ((PL_op->op_flags & OPf_SPECIAL) && |
862 | !(PL_op->op_flags & OPf_MOD)) |
863 | { |
864 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV); |
c9d5ac95 |
865 | if (!gv |
866 | && (!is_gv_magical(sym,len,0) |
867 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV)))) |
868 | { |
35cd451c |
869 | RETSETUNDEF; |
c9d5ac95 |
870 | } |
35cd451c |
871 | } |
872 | else { |
873 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
874 | DIE(aTHX_ PL_no_symref, sym, "a HASH"); |
35cd451c |
875 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
876 | } |
877 | } |
878 | else { |
67955e0c |
879 | gv = (GV*)sv; |
a0d0e21e |
880 | } |
67955e0c |
881 | hv = GvHVn(gv); |
533c011a |
882 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c |
883 | hv = save_hash(gv); |
533c011a |
884 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
885 | SETs((SV*)hv); |
886 | RETURN; |
887 | } |
78f9721b |
888 | else if (LVRET) { |
889 | if (GIMME == G_SCALAR) |
890 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
891 | " scalar context"); |
892 | SETs((SV*)hv); |
893 | RETURN; |
894 | } |
a0d0e21e |
895 | } |
896 | } |
897 | |
898 | if (GIMME == G_ARRAY) { /* array wanted */ |
3280af22 |
899 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 |
900 | return do_kv(); |
a0d0e21e |
901 | } |
902 | else { |
903 | dTARGET; |
b9c39e73 |
904 | if (HvFILL(hv)) |
57def98f |
905 | Perl_sv_setpvf(aTHX_ TARG, "%"IVdf"/%"IVdf, |
906 | (IV)HvFILL(hv), (IV)HvMAX(hv) + 1); |
a0d0e21e |
907 | else |
908 | sv_setiv(TARG, 0); |
c750a3ec |
909 | |
a0d0e21e |
910 | SETTARG; |
911 | RETURN; |
912 | } |
913 | } |
914 | |
10c8fecd |
915 | STATIC void |
916 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) |
917 | { |
918 | if (*relem) { |
919 | SV *tmpstr; |
6d822dc4 |
920 | HE *didstore; |
921 | |
922 | if (ckWARN(WARN_MISC)) { |
10c8fecd |
923 | if (relem == firstrelem && |
924 | SvROK(*relem) && |
925 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || |
926 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) |
927 | { |
9014280d |
928 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd |
929 | "Reference found where even-sized list expected"); |
930 | } |
931 | else |
9014280d |
932 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd |
933 | "Odd number of elements in hash assignment"); |
934 | } |
6d822dc4 |
935 | |
936 | tmpstr = NEWSV(29,0); |
937 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
938 | if (SvMAGICAL(hash)) { |
939 | if (SvSMAGICAL(tmpstr)) |
940 | mg_set(tmpstr); |
941 | if (!didstore) |
942 | sv_2mortal(tmpstr); |
943 | } |
944 | TAINT_NOT; |
10c8fecd |
945 | } |
946 | } |
947 | |
a0d0e21e |
948 | PP(pp_aassign) |
949 | { |
39644a26 |
950 | dSP; |
3280af22 |
951 | SV **lastlelem = PL_stack_sp; |
952 | SV **lastrelem = PL_stack_base + POPMARK; |
953 | SV **firstrelem = PL_stack_base + POPMARK + 1; |
a0d0e21e |
954 | SV **firstlelem = lastrelem + 1; |
955 | |
956 | register SV **relem; |
957 | register SV **lelem; |
958 | |
959 | register SV *sv; |
960 | register AV *ary; |
961 | |
54310121 |
962 | I32 gimme; |
a0d0e21e |
963 | HV *hash; |
964 | I32 i; |
965 | int magic; |
966 | |
3280af22 |
967 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
a0d0e21e |
968 | |
969 | /* If there's a common identifier on both sides we have to take |
970 | * special care that assigning the identifier on the left doesn't |
971 | * clobber a value on the right that's used later in the list. |
972 | */ |
10c8fecd |
973 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 |
974 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd |
975 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
976 | /*SUPPRESS 560*/ |
155aba94 |
977 | if ((sv = *relem)) { |
a1f49e72 |
978 | TAINT_NOT; /* Each item is independent */ |
10c8fecd |
979 | *relem = sv_mortalcopy(sv); |
a1f49e72 |
980 | } |
10c8fecd |
981 | } |
a0d0e21e |
982 | } |
983 | |
984 | relem = firstrelem; |
985 | lelem = firstlelem; |
986 | ary = Null(AV*); |
987 | hash = Null(HV*); |
10c8fecd |
988 | |
a0d0e21e |
989 | while (lelem <= lastlelem) { |
bbce6d69 |
990 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e |
991 | sv = *lelem++; |
992 | switch (SvTYPE(sv)) { |
993 | case SVt_PVAV: |
994 | ary = (AV*)sv; |
748a9306 |
995 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e |
996 | av_clear(ary); |
7e42bd57 |
997 | av_extend(ary, lastrelem - relem); |
a0d0e21e |
998 | i = 0; |
999 | while (relem <= lastrelem) { /* gobble up all the rest */ |
5117ca91 |
1000 | SV **didstore; |
a0d0e21e |
1001 | sv = NEWSV(28,0); |
1002 | assert(*relem); |
1003 | sv_setsv(sv,*relem); |
1004 | *(relem++) = sv; |
5117ca91 |
1005 | didstore = av_store(ary,i++,sv); |
1006 | if (magic) { |
fb73857a |
1007 | if (SvSMAGICAL(sv)) |
1008 | mg_set(sv); |
5117ca91 |
1009 | if (!didstore) |
8127e0e3 |
1010 | sv_2mortal(sv); |
5117ca91 |
1011 | } |
bbce6d69 |
1012 | TAINT_NOT; |
a0d0e21e |
1013 | } |
1014 | break; |
10c8fecd |
1015 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e |
1016 | SV *tmpstr; |
1017 | |
1018 | hash = (HV*)sv; |
748a9306 |
1019 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e |
1020 | hv_clear(hash); |
1021 | |
1022 | while (relem < lastrelem) { /* gobble up all the rest */ |
5117ca91 |
1023 | HE *didstore; |
4633a7c4 |
1024 | if (*relem) |
a0d0e21e |
1025 | sv = *(relem++); |
4633a7c4 |
1026 | else |
3280af22 |
1027 | sv = &PL_sv_no, relem++; |
a0d0e21e |
1028 | tmpstr = NEWSV(29,0); |
1029 | if (*relem) |
1030 | sv_setsv(tmpstr,*relem); /* value */ |
1031 | *(relem++) = tmpstr; |
5117ca91 |
1032 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1033 | if (magic) { |
fb73857a |
1034 | if (SvSMAGICAL(tmpstr)) |
1035 | mg_set(tmpstr); |
5117ca91 |
1036 | if (!didstore) |
8127e0e3 |
1037 | sv_2mortal(tmpstr); |
5117ca91 |
1038 | } |
bbce6d69 |
1039 | TAINT_NOT; |
8e07c86e |
1040 | } |
6a0deba8 |
1041 | if (relem == lastrelem) { |
10c8fecd |
1042 | do_oddball(hash, relem, firstrelem); |
6a0deba8 |
1043 | relem++; |
1930e939 |
1044 | } |
a0d0e21e |
1045 | } |
1046 | break; |
1047 | default: |
6fc92669 |
1048 | if (SvIMMORTAL(sv)) { |
1049 | if (relem <= lastrelem) |
1050 | relem++; |
1051 | break; |
a0d0e21e |
1052 | } |
1053 | if (relem <= lastrelem) { |
1054 | sv_setsv(sv, *relem); |
1055 | *(relem++) = sv; |
1056 | } |
1057 | else |
3280af22 |
1058 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e |
1059 | SvSETMAGIC(sv); |
1060 | break; |
1061 | } |
1062 | } |
3280af22 |
1063 | if (PL_delaymagic & ~DM_DELAY) { |
1064 | if (PL_delaymagic & DM_UID) { |
a0d0e21e |
1065 | #ifdef HAS_SETRESUID |
b28d0864 |
1066 | (void)setresuid(PL_uid,PL_euid,(Uid_t)-1); |
56febc5e |
1067 | #else |
1068 | # ifdef HAS_SETREUID |
3280af22 |
1069 | (void)setreuid(PL_uid,PL_euid); |
56febc5e |
1070 | # else |
1071 | # ifdef HAS_SETRUID |
b28d0864 |
1072 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1073 | (void)setruid(PL_uid); |
1074 | PL_delaymagic &= ~DM_RUID; |
a0d0e21e |
1075 | } |
56febc5e |
1076 | # endif /* HAS_SETRUID */ |
1077 | # ifdef HAS_SETEUID |
b28d0864 |
1078 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
1079 | (void)seteuid(PL_uid); |
1080 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e |
1081 | } |
56febc5e |
1082 | # endif /* HAS_SETEUID */ |
b28d0864 |
1083 | if (PL_delaymagic & DM_UID) { |
1084 | if (PL_uid != PL_euid) |
cea2e8a9 |
1085 | DIE(aTHX_ "No setreuid available"); |
b28d0864 |
1086 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e |
1087 | } |
56febc5e |
1088 | # endif /* HAS_SETREUID */ |
1089 | #endif /* HAS_SETRESUID */ |
d8eceb89 |
1090 | PL_uid = PerlProc_getuid(); |
1091 | PL_euid = PerlProc_geteuid(); |
a0d0e21e |
1092 | } |
3280af22 |
1093 | if (PL_delaymagic & DM_GID) { |
a0d0e21e |
1094 | #ifdef HAS_SETRESGID |
b28d0864 |
1095 | (void)setresgid(PL_gid,PL_egid,(Gid_t)-1); |
56febc5e |
1096 | #else |
1097 | # ifdef HAS_SETREGID |
3280af22 |
1098 | (void)setregid(PL_gid,PL_egid); |
56febc5e |
1099 | # else |
1100 | # ifdef HAS_SETRGID |
b28d0864 |
1101 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1102 | (void)setrgid(PL_gid); |
1103 | PL_delaymagic &= ~DM_RGID; |
a0d0e21e |
1104 | } |
56febc5e |
1105 | # endif /* HAS_SETRGID */ |
1106 | # ifdef HAS_SETEGID |
b28d0864 |
1107 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
1108 | (void)setegid(PL_gid); |
1109 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e |
1110 | } |
56febc5e |
1111 | # endif /* HAS_SETEGID */ |
b28d0864 |
1112 | if (PL_delaymagic & DM_GID) { |
1113 | if (PL_gid != PL_egid) |
cea2e8a9 |
1114 | DIE(aTHX_ "No setregid available"); |
b28d0864 |
1115 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e |
1116 | } |
56febc5e |
1117 | # endif /* HAS_SETREGID */ |
1118 | #endif /* HAS_SETRESGID */ |
d8eceb89 |
1119 | PL_gid = PerlProc_getgid(); |
1120 | PL_egid = PerlProc_getegid(); |
a0d0e21e |
1121 | } |
3280af22 |
1122 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e |
1123 | } |
3280af22 |
1124 | PL_delaymagic = 0; |
54310121 |
1125 | |
1126 | gimme = GIMME_V; |
1127 | if (gimme == G_VOID) |
1128 | SP = firstrelem - 1; |
1129 | else if (gimme == G_SCALAR) { |
1130 | dTARGET; |
1131 | SP = firstrelem; |
1132 | SETi(lastrelem - firstrelem + 1); |
1133 | } |
1134 | else { |
a0d0e21e |
1135 | if (ary || hash) |
1136 | SP = lastrelem; |
1137 | else |
1138 | SP = firstrelem + (lastlelem - firstlelem); |
0c8c7a05 |
1139 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc |
1140 | while (relem <= SP) |
3280af22 |
1141 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e |
1142 | } |
54310121 |
1143 | RETURN; |
a0d0e21e |
1144 | } |
1145 | |
8782bef2 |
1146 | PP(pp_qr) |
1147 | { |
39644a26 |
1148 | dSP; |
8782bef2 |
1149 | register PMOP *pm = cPMOP; |
1150 | SV *rv = sv_newmortal(); |
57668c4d |
1151 | SV *sv = newSVrv(rv, "Regexp"); |
e08e52cf |
1152 | if (pm->op_pmdynflags & PMdf_TAINTED) |
1153 | SvTAINTED_on(rv); |
aaa362c4 |
1154 | sv_magic(sv,(SV*)ReREFCNT_inc(PM_GETRE(pm)), PERL_MAGIC_qr,0,0); |
8782bef2 |
1155 | RETURNX(PUSHs(rv)); |
1156 | } |
1157 | |
a0d0e21e |
1158 | PP(pp_match) |
1159 | { |
39644a26 |
1160 | dSP; dTARG; |
a0d0e21e |
1161 | register PMOP *pm = cPMOP; |
d65afb4b |
1162 | PMOP *dynpm = pm; |
a0d0e21e |
1163 | register char *t; |
1164 | register char *s; |
1165 | char *strend; |
1166 | I32 global; |
f722798b |
1167 | I32 r_flags = REXEC_CHECKED; |
1168 | char *truebase; /* Start of string */ |
aaa362c4 |
1169 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b |
1170 | bool rxtainted; |
a0d0e21e |
1171 | I32 gimme = GIMME; |
1172 | STRLEN len; |
748a9306 |
1173 | I32 minmatch = 0; |
3280af22 |
1174 | I32 oldsave = PL_savestack_ix; |
f86702cc |
1175 | I32 update_minmatch = 1; |
e60df1fa |
1176 | I32 had_zerolen = 0; |
a0d0e21e |
1177 | |
533c011a |
1178 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
1179 | TARG = POPs; |
1180 | else { |
54b9620d |
1181 | TARG = DEFSV; |
a0d0e21e |
1182 | EXTEND(SP,1); |
1183 | } |
d9f424b2 |
1184 | |
c277df42 |
1185 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e |
1186 | s = SvPV(TARG, len); |
1187 | strend = s + len; |
1188 | if (!s) |
2269b42e |
1189 | DIE(aTHX_ "panic: pp_match"); |
b3eb6a9b |
1190 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 |
1191 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba |
1192 | TAINT_NOT; |
a0d0e21e |
1193 | |
a30b2f1f |
1194 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 |
1195 | |
d65afb4b |
1196 | /* PMdf_USED is set after a ?? matches once */ |
48c036b1 |
1197 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 |
1198 | failure: |
a0d0e21e |
1199 | if (gimme == G_ARRAY) |
1200 | RETURN; |
1201 | RETPUSHNO; |
1202 | } |
1203 | |
d65afb4b |
1204 | /* empty pattern special-cased to use last successful pattern if possible */ |
3280af22 |
1205 | if (!rx->prelen && PL_curpm) { |
1206 | pm = PL_curpm; |
aaa362c4 |
1207 | rx = PM_GETRE(pm); |
a0d0e21e |
1208 | } |
d65afb4b |
1209 | |
eb160463 |
1210 | if (rx->minlen > (I32)len) |
d65afb4b |
1211 | goto failure; |
c277df42 |
1212 | |
a0d0e21e |
1213 | truebase = t = s; |
ad94a511 |
1214 | |
1215 | /* XXXX What part of this is needed with true \G-support? */ |
d65afb4b |
1216 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
cf93c79d |
1217 | rx->startp[0] = -1; |
a0d0e21e |
1218 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 |
1219 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 |
1220 | if (mg && mg->mg_len >= 0) { |
b7a35066 |
1221 | if (!(rx->reganch & ROPT_GPOS_SEEN)) |
1c846c1f |
1222 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e |
1223 | else if (rx->reganch & ROPT_ANCH_GPOS) { |
1224 | r_flags |= REXEC_IGNOREPOS; |
1c846c1f |
1225 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e |
1226 | } |
748a9306 |
1227 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc |
1228 | update_minmatch = 0; |
748a9306 |
1229 | } |
a0d0e21e |
1230 | } |
1231 | } |
14977893 |
1232 | if ((!global && rx->nparens) |
1233 | || SvTEMP(TARG) || PL_sawampersand) |
1234 | r_flags |= REXEC_COPY_STR; |
1c846c1f |
1235 | if (SvSCREAM(TARG)) |
22e551b9 |
1236 | r_flags |= REXEC_SCREAM; |
1237 | |
a0d0e21e |
1238 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 |
1239 | SAVEINT(PL_multiline); |
1240 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; |
a0d0e21e |
1241 | } |
1242 | |
1243 | play_it_again: |
cf93c79d |
1244 | if (global && rx->startp[0] != -1) { |
1245 | t = s = rx->endp[0] + truebase; |
d9f97599 |
1246 | if ((s + rx->minlen) > strend) |
a0d0e21e |
1247 | goto nope; |
f86702cc |
1248 | if (update_minmatch++) |
e60df1fa |
1249 | minmatch = had_zerolen; |
a0d0e21e |
1250 | } |
60aeb6fd |
1251 | if (rx->reganch & RE_USE_INTUIT && |
1252 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { |
ee0b7718 |
1253 | PL_bostr = truebase; |
f722798b |
1254 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1255 | |
1256 | if (!s) |
1257 | goto nope; |
1258 | if ( (rx->reganch & ROPT_CHECK_ALL) |
14977893 |
1259 | && !PL_sawampersand |
f722798b |
1260 | && ((rx->reganch & ROPT_NOSCAN) |
1261 | || !((rx->reganch & RE_INTUIT_TAIL) |
05b4157f |
1262 | && (r_flags & REXEC_SCREAM))) |
1263 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ |
f722798b |
1264 | goto yup; |
a0d0e21e |
1265 | } |
cea2e8a9 |
1266 | if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 |
1267 | { |
3280af22 |
1268 | PL_curpm = pm; |
d65afb4b |
1269 | if (dynpm->op_pmflags & PMf_ONCE) |
1270 | dynpm->op_pmdynflags |= PMdf_USED; |
a0d0e21e |
1271 | goto gotcha; |
1272 | } |
1273 | else |
1274 | goto ret_no; |
1275 | /*NOTREACHED*/ |
1276 | |
1277 | gotcha: |
72311751 |
1278 | if (rxtainted) |
1279 | RX_MATCH_TAINTED_on(rx); |
1280 | TAINT_IF(RX_MATCH_TAINTED(rx)); |
a0d0e21e |
1281 | if (gimme == G_ARRAY) { |
ffc61ed2 |
1282 | I32 nparens, i, len; |
a0d0e21e |
1283 | |
ffc61ed2 |
1284 | nparens = rx->nparens; |
1285 | if (global && !nparens) |
a0d0e21e |
1286 | i = 1; |
1287 | else |
1288 | i = 0; |
c277df42 |
1289 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 |
1290 | EXTEND(SP, nparens + i); |
1291 | EXTEND_MORTAL(nparens + i); |
1292 | for (i = !i; i <= nparens; i++) { |
a0d0e21e |
1293 | PUSHs(sv_newmortal()); |
1294 | /*SUPPRESS 560*/ |
cf93c79d |
1295 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
1296 | len = rx->endp[i] - rx->startp[i]; |
290deeac |
1297 | if (rx->endp[i] < 0 || rx->startp[i] < 0 || |
1298 | len < 0 || len > strend - s) |
1299 | DIE(aTHX_ "panic: pp_match start/end pointers"); |
cf93c79d |
1300 | s = rx->startp[i] + truebase; |
a0d0e21e |
1301 | sv_setpvn(*SP, s, len); |
cce850e4 |
1302 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd |
1303 | SvUTF8_on(*SP); |
a0d0e21e |
1304 | } |
1305 | } |
1306 | if (global) { |
d65afb4b |
1307 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
0af80b60 |
1308 | MAGIC* mg = 0; |
1309 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
1310 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
1311 | if (!mg) { |
1312 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1313 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
1314 | } |
1315 | if (rx->startp[0] != -1) { |
1316 | mg->mg_len = rx->endp[0]; |
1317 | if (rx->startp[0] == rx->endp[0]) |
1318 | mg->mg_flags |= MGf_MINMATCH; |
1319 | else |
1320 | mg->mg_flags &= ~MGf_MINMATCH; |
1321 | } |
1322 | } |
cf93c79d |
1323 | had_zerolen = (rx->startp[0] != -1 |
1324 | && rx->startp[0] == rx->endp[0]); |
c277df42 |
1325 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d |
1326 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e |
1327 | goto play_it_again; |
1328 | } |
ffc61ed2 |
1329 | else if (!nparens) |
bde848c5 |
1330 | XPUSHs(&PL_sv_yes); |
4633a7c4 |
1331 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1332 | RETURN; |
1333 | } |
1334 | else { |
1335 | if (global) { |
1336 | MAGIC* mg = 0; |
1337 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
14befaf4 |
1338 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e |
1339 | if (!mg) { |
14befaf4 |
1340 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1341 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e |
1342 | } |
cf93c79d |
1343 | if (rx->startp[0] != -1) { |
1344 | mg->mg_len = rx->endp[0]; |
d9f97599 |
1345 | if (rx->startp[0] == rx->endp[0]) |
748a9306 |
1346 | mg->mg_flags |= MGf_MINMATCH; |
1347 | else |
1348 | mg->mg_flags &= ~MGf_MINMATCH; |
1349 | } |
a0d0e21e |
1350 | } |
4633a7c4 |
1351 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1352 | RETPUSHYES; |
1353 | } |
1354 | |
f722798b |
1355 | yup: /* Confirmed by INTUIT */ |
72311751 |
1356 | if (rxtainted) |
1357 | RX_MATCH_TAINTED_on(rx); |
1358 | TAINT_IF(RX_MATCH_TAINTED(rx)); |
3280af22 |
1359 | PL_curpm = pm; |
d65afb4b |
1360 | if (dynpm->op_pmflags & PMf_ONCE) |
1361 | dynpm->op_pmdynflags |= PMdf_USED; |
cf93c79d |
1362 | if (RX_MATCH_COPIED(rx)) |
1363 | Safefree(rx->subbeg); |
1364 | RX_MATCH_COPIED_off(rx); |
1365 | rx->subbeg = Nullch; |
a0d0e21e |
1366 | if (global) { |
d9f97599 |
1367 | rx->subbeg = truebase; |
cf93c79d |
1368 | rx->startp[0] = s - truebase; |
a30b2f1f |
1369 | if (RX_MATCH_UTF8(rx)) { |
60aeb6fd |
1370 | char *t = (char*)utf8_hop((U8*)s, rx->minlen); |
1371 | rx->endp[0] = t - truebase; |
1372 | } |
1373 | else { |
1374 | rx->endp[0] = s - truebase + rx->minlen; |
1375 | } |
cf93c79d |
1376 | rx->sublen = strend - truebase; |
a0d0e21e |
1377 | goto gotcha; |
1c846c1f |
1378 | } |
14977893 |
1379 | if (PL_sawampersand) { |
1380 | I32 off; |
ed252734 |
1381 | #ifdef PERL_COPY_ON_WRITE |
1382 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
1383 | if (DEBUG_C_TEST) { |
1384 | PerlIO_printf(Perl_debug_log, |
1385 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", |
1386 | (int) SvTYPE(TARG), truebase, t, |
1387 | (int)(t-truebase)); |
1388 | } |
1389 | rx->saved_copy = sv_setsv_cow(rx->saved_copy, TARG); |
1390 | rx->subbeg = SvPVX(rx->saved_copy) + (t - truebase); |
1391 | assert (SvPOKp(rx->saved_copy)); |
1392 | } else |
1393 | #endif |
1394 | { |
14977893 |
1395 | |
ed252734 |
1396 | rx->subbeg = savepvn(t, strend - t); |
1397 | #ifdef PERL_COPY_ON_WRITE |
1398 | rx->saved_copy = Nullsv; |
1399 | #endif |
1400 | } |
14977893 |
1401 | rx->sublen = strend - t; |
1402 | RX_MATCH_COPIED_on(rx); |
1403 | off = rx->startp[0] = s - t; |
1404 | rx->endp[0] = off + rx->minlen; |
1405 | } |
1406 | else { /* startp/endp are used by @- @+. */ |
1407 | rx->startp[0] = s - truebase; |
1408 | rx->endp[0] = s - truebase + rx->minlen; |
1409 | } |
fc19f8d0 |
1410 | rx->nparens = rx->lastparen = 0; /* used by @- and @+ */ |
4633a7c4 |
1411 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1412 | RETPUSHYES; |
1413 | |
1414 | nope: |
a0d0e21e |
1415 | ret_no: |
d65afb4b |
1416 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e |
1417 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 |
1418 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e |
1419 | if (mg) |
565764a8 |
1420 | mg->mg_len = -1; |
a0d0e21e |
1421 | } |
1422 | } |
4633a7c4 |
1423 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1424 | if (gimme == G_ARRAY) |
1425 | RETURN; |
1426 | RETPUSHNO; |
1427 | } |
1428 | |
1429 | OP * |
864dbfa3 |
1430 | Perl_do_readline(pTHX) |
a0d0e21e |
1431 | { |
1432 | dSP; dTARGETSTACKED; |
1433 | register SV *sv; |
1434 | STRLEN tmplen = 0; |
1435 | STRLEN offset; |
760ac839 |
1436 | PerlIO *fp; |
3280af22 |
1437 | register IO *io = GvIO(PL_last_in_gv); |
533c011a |
1438 | register I32 type = PL_op->op_type; |
54310121 |
1439 | I32 gimme = GIMME_V; |
e79b0511 |
1440 | MAGIC *mg; |
a0d0e21e |
1441 | |
5b468f54 |
1442 | if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { |
e79b0511 |
1443 | PUSHMARK(SP); |
5b468f54 |
1444 | XPUSHs(SvTIED_obj((SV*)io, mg)); |
e79b0511 |
1445 | PUTBACK; |
1446 | ENTER; |
864dbfa3 |
1447 | call_method("READLINE", gimme); |
e79b0511 |
1448 | LEAVE; |
1449 | SPAGAIN; |
0b7c7b4f |
1450 | if (gimme == G_SCALAR) { |
1451 | SV* result = POPs; |
1452 | SvSetSV_nosteal(TARG, result); |
1453 | PUSHTARG; |
1454 | } |
e79b0511 |
1455 | RETURN; |
1456 | } |
a0d0e21e |
1457 | fp = Nullfp; |
1458 | if (io) { |
1459 | fp = IoIFP(io); |
1460 | if (!fp) { |
1461 | if (IoFLAGS(io) & IOf_ARGV) { |
1462 | if (IoFLAGS(io) & IOf_START) { |
a0d0e21e |
1463 | IoLINES(io) = 0; |
3280af22 |
1464 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 |
1465 | IoFLAGS(io) &= ~IOf_START; |
9d116dd7 |
1466 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 |
1467 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1468 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d |
1469 | fp = IoIFP(io); |
1470 | goto have_fp; |
a0d0e21e |
1471 | } |
1472 | } |
3280af22 |
1473 | fp = nextargv(PL_last_in_gv); |
a0d0e21e |
1474 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 |
1475 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e |
1476 | } |
1477 | } |
0d44d22b |
1478 | else if (type == OP_GLOB) |
1479 | fp = Perl_start_glob(aTHX_ POPs, io); |
a0d0e21e |
1480 | } |
1481 | else if (type == OP_GLOB) |
1482 | SP--; |
a00b5bd3 |
1483 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 |
1484 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 |
1485 | } |
a0d0e21e |
1486 | } |
1487 | if (!fp) { |
790090df |
1488 | if (ckWARN2(WARN_GLOB, WARN_CLOSED) |
1489 | && (!io || !(IoFLAGS(io) & IOf_START))) { |
3f4520fe |
1490 | if (type == OP_GLOB) |
9014280d |
1491 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a |
1492 | "glob failed (can't start child: %s)", |
1493 | Strerror(errno)); |
69282e91 |
1494 | else |
bc37a18f |
1495 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe |
1496 | } |
54310121 |
1497 | if (gimme == G_SCALAR) { |
79628082 |
1498 | /* undef TARG, and push that undefined value */ |
ba92458f |
1499 | if (type != OP_RCATLINE) { |
1500 | SV_CHECK_THINKFIRST_COW_DROP(TARG); |
1501 | SvOK_off(TARG); |
1502 | } |
a0d0e21e |
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 |
1512 | (void)SvUPGRADE(sv, SVt_PV); |
1513 | tmplen = SvLEN(sv); /* remember if already alloced */ |
bc44a8a2 |
1514 | if (!tmplen && !SvREADONLY(sv)) |
a0d0e21e |
1515 | Sv_Grow(sv, 80); /* try short-buffering it */ |
2b5e58c4 |
1516 | offset = 0; |
1517 | if (type == OP_RCATLINE && SvOK(sv)) { |
1518 | if (!SvPOK(sv)) { |
1519 | STRLEN n_a; |
1520 | (void)SvPV_force(sv, n_a); |
1521 | } |
a0d0e21e |
1522 | offset = SvCUR(sv); |
2b5e58c4 |
1523 | } |
a0d0e21e |
1524 | } |
54310121 |
1525 | else { |
1526 | sv = sv_2mortal(NEWSV(57, 80)); |
1527 | offset = 0; |
1528 | } |
fbad3eb5 |
1529 | |
3887d568 |
1530 | /* This should not be marked tainted if the fp is marked clean */ |
1531 | #define MAYBE_TAINT_LINE(io, sv) \ |
1532 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ |
1533 | TAINT; \ |
1534 | SvTAINTED_on(sv); \ |
1535 | } |
1536 | |
684bef36 |
1537 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 |
1538 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 |
1539 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba |
1540 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 |
1541 | |
a0d0e21e |
1542 | for (;;) { |
09e8efcc |
1543 | PUTBACK; |
fbad3eb5 |
1544 | if (!sv_gets(sv, fp, offset) |
1545 | && (type == OP_GLOB || SNARF_EOF(gimme, PL_rs, io, sv))) |
1546 | { |
760ac839 |
1547 | PerlIO_clearerr(fp); |
a0d0e21e |
1548 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 |
1549 | fp = nextargv(PL_last_in_gv); |
a0d0e21e |
1550 | if (fp) |
1551 | continue; |
3280af22 |
1552 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e |
1553 | } |
1554 | else if (type == OP_GLOB) { |
e476b1b5 |
1555 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
9014280d |
1556 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
4eb79ab5 |
1557 | "glob failed (child exited with status %d%s)", |
894356b3 |
1558 | (int)(STATUS_CURRENT >> 8), |
cf494569 |
1559 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 |
1560 | } |
a0d0e21e |
1561 | } |
54310121 |
1562 | if (gimme == G_SCALAR) { |
ba92458f |
1563 | if (type != OP_RCATLINE) { |
1564 | SV_CHECK_THINKFIRST_COW_DROP(TARG); |
1565 | SvOK_off(TARG); |
1566 | } |
09e8efcc |
1567 | SPAGAIN; |
a0d0e21e |
1568 | PUSHTARG; |
1569 | } |
3887d568 |
1570 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e |
1571 | RETURN; |
1572 | } |
3887d568 |
1573 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e |
1574 | IoLINES(io)++; |
b9fee9ba |
1575 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc |
1576 | SvSETMAGIC(sv); |
09e8efcc |
1577 | SPAGAIN; |
a0d0e21e |
1578 | XPUSHs(sv); |
a0d0e21e |
1579 | if (type == OP_GLOB) { |
1580 | char *tmps; |
1581 | |
3280af22 |
1582 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd |
1583 | tmps = SvEND(sv) - 1; |
3280af22 |
1584 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd |
1585 | *tmps = '\0'; |
1586 | SvCUR(sv)--; |
1587 | } |
1588 | } |
a0d0e21e |
1589 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1590 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && |
1591 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) |
1592 | break; |
43384a1a |
1593 | if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e |
1594 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1595 | continue; |
1596 | } |
1597 | } |
54310121 |
1598 | if (gimme == G_ARRAY) { |
a0d0e21e |
1599 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1600 | SvLEN_set(sv, SvCUR(sv)+1); |
1601 | Renew(SvPVX(sv), SvLEN(sv), char); |
1602 | } |
1603 | sv = sv_2mortal(NEWSV(58, 80)); |
1604 | continue; |
1605 | } |
54310121 |
1606 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e |
1607 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1608 | if (SvCUR(sv) < 60) |
1609 | SvLEN_set(sv, 80); |
1610 | else |
1611 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ |
1612 | Renew(SvPVX(sv), SvLEN(sv), char); |
1613 | } |
1614 | RETURN; |
1615 | } |
1616 | } |
1617 | |
1618 | PP(pp_enter) |
1619 | { |
39644a26 |
1620 | dSP; |
c09156bb |
1621 | register PERL_CONTEXT *cx; |
533c011a |
1622 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e |
1623 | |
54310121 |
1624 | if (gimme == -1) { |
1625 | if (cxstack_ix >= 0) |
1626 | gimme = cxstack[cxstack_ix].blk_gimme; |
1627 | else |
1628 | gimme = G_SCALAR; |
1629 | } |
a0d0e21e |
1630 | |
1631 | ENTER; |
1632 | |
1633 | SAVETMPS; |
924508f0 |
1634 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e |
1635 | |
1636 | RETURN; |
1637 | } |
1638 | |
1639 | PP(pp_helem) |
1640 | { |
39644a26 |
1641 | dSP; |
760ac839 |
1642 | HE* he; |
ae77835f |
1643 | SV **svp; |
a0d0e21e |
1644 | SV *keysv = POPs; |
a0d0e21e |
1645 | HV *hv = (HV*)POPs; |
78f9721b |
1646 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a |
1647 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
be6c24e0 |
1648 | SV *sv; |
765f542d |
1649 | #ifdef PERL_COPY_ON_WRITE |
1650 | U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvUVX(keysv) : 0; |
1651 | #else |
1c846c1f |
1652 | U32 hash = (SvFAKE(keysv) && SvREADONLY(keysv)) ? SvUVX(keysv) : 0; |
765f542d |
1653 | #endif |
9c5ffd7c |
1654 | I32 preeminent = 0; |
a0d0e21e |
1655 | |
ae77835f |
1656 | if (SvTYPE(hv) == SVt_PVHV) { |
8d1f198f |
1657 | if (PL_op->op_private & OPpLVAL_INTRO) { |
1658 | MAGIC *mg; |
1659 | HV *stash; |
1660 | /* does the element we're localizing already exist? */ |
c39e6ab0 |
1661 | preeminent = |
8d1f198f |
1662 | /* can we determine whether it exists? */ |
1663 | ( !SvRMAGICAL(hv) |
1664 | || mg_find((SV*)hv, PERL_MAGIC_env) |
1665 | || ( (mg = mg_find((SV*)hv, PERL_MAGIC_tied)) |
1666 | /* Try to preserve the existenceness of a tied hash |
1667 | * element by using EXISTS and DELETE if possible. |
1668 | * Fallback to FETCH and STORE otherwise */ |
1669 | && (stash = SvSTASH(SvRV(SvTIED_obj((SV*)hv, mg)))) |
1670 | && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) |
1671 | && gv_fetchmethod_autoload(stash, "DELETE", TRUE) |
1672 | ) |
1673 | ) ? hv_exists_ent(hv, keysv, 0) : 1; |
c39e6ab0 |
1674 | |
8d1f198f |
1675 | } |
1c846c1f |
1676 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
97fcbf96 |
1677 | svp = he ? &HeVAL(he) : 0; |
ae77835f |
1678 | } |
c750a3ec |
1679 | else { |
a0d0e21e |
1680 | RETPUSHUNDEF; |
c750a3ec |
1681 | } |
a0d0e21e |
1682 | if (lval) { |
3280af22 |
1683 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 |
1684 | SV* lv; |
1685 | SV* key2; |
2d8e6c8d |
1686 | if (!defer) { |
1687 | STRLEN n_a; |
cea2e8a9 |
1688 | DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); |
2d8e6c8d |
1689 | } |
68dc0745 |
1690 | lv = sv_newmortal(); |
1691 | sv_upgrade(lv, SVt_PVLV); |
1692 | LvTYPE(lv) = 'y'; |
14befaf4 |
1693 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 |
1694 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
1695 | LvTARG(lv) = SvREFCNT_inc(hv); |
1696 | LvTARGLEN(lv) = 1; |
1697 | PUSHs(lv); |
1698 | RETURN; |
1699 | } |
533c011a |
1700 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f |
1701 | if (HvNAME(hv) && isGV(*svp)) |
533c011a |
1702 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc |
1703 | else { |
1704 | if (!preeminent) { |
1705 | STRLEN keylen; |
1706 | char *key = SvPV(keysv, keylen); |
57813020 |
1707 | SAVEDELETE(hv, savepvn(key,keylen), keylen); |
bfc4de9f |
1708 | } else |
1f5346dc |
1709 | save_helem(hv, keysv, svp); |
1710 | } |
5f05dabc |
1711 | } |
533c011a |
1712 | else if (PL_op->op_private & OPpDEREF) |
1713 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); |
a0d0e21e |
1714 | } |
3280af22 |
1715 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 |
1716 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1717 | * Pushing the magical RHS on to the stack is useless, since |
1718 | * that magic is soon destined to be misled by the local(), |
1719 | * and thus the later pp_sassign() will fail to mg_get() the |
1720 | * old value. This should also cure problems with delayed |
1721 | * mg_get()s. GSAR 98-07-03 */ |
1722 | if (!lval && SvGMAGICAL(sv)) |
1723 | sv = sv_mortalcopy(sv); |
1724 | PUSHs(sv); |
a0d0e21e |
1725 | RETURN; |
1726 | } |
1727 | |
1728 | PP(pp_leave) |
1729 | { |
39644a26 |
1730 | dSP; |
c09156bb |
1731 | register PERL_CONTEXT *cx; |
a0d0e21e |
1732 | register SV **mark; |
1733 | SV **newsp; |
1734 | PMOP *newpm; |
1735 | I32 gimme; |
1736 | |
533c011a |
1737 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e |
1738 | cx = &cxstack[cxstack_ix]; |
3280af22 |
1739 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e |
1740 | } |
1741 | |
1742 | POPBLOCK(cx,newpm); |
1743 | |
533c011a |
1744 | gimme = OP_GIMME(PL_op, -1); |
54310121 |
1745 | if (gimme == -1) { |
1746 | if (cxstack_ix >= 0) |
1747 | gimme = cxstack[cxstack_ix].blk_gimme; |
1748 | else |
1749 | gimme = G_SCALAR; |
1750 | } |
a0d0e21e |
1751 | |
a1f49e72 |
1752 | TAINT_NOT; |
54310121 |
1753 | if (gimme == G_VOID) |
1754 | SP = newsp; |
1755 | else if (gimme == G_SCALAR) { |
1756 | MARK = newsp + 1; |
09256e2f |
1757 | if (MARK <= SP) { |
54310121 |
1758 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1759 | *MARK = TOPs; |
1760 | else |
1761 | *MARK = sv_mortalcopy(TOPs); |
09256e2f |
1762 | } else { |
54310121 |
1763 | MEXTEND(mark,0); |
3280af22 |
1764 | *MARK = &PL_sv_undef; |
a0d0e21e |
1765 | } |
54310121 |
1766 | SP = MARK; |
a0d0e21e |
1767 | } |
54310121 |
1768 | else if (gimme == G_ARRAY) { |
a1f49e72 |
1769 | /* in case LEAVE wipes old return values */ |
1770 | for (mark = newsp + 1; mark <= SP; mark++) { |
1771 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { |
a0d0e21e |
1772 | *mark = sv_mortalcopy(*mark); |
a1f49e72 |
1773 | TAINT_NOT; /* Each item is independent */ |
1774 | } |
1775 | } |
a0d0e21e |
1776 | } |
3280af22 |
1777 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e |
1778 | |
1779 | LEAVE; |
1780 | |
1781 | RETURN; |
1782 | } |
1783 | |
1784 | PP(pp_iter) |
1785 | { |
39644a26 |
1786 | dSP; |
c09156bb |
1787 | register PERL_CONTEXT *cx; |
5f05dabc |
1788 | SV* sv; |
4633a7c4 |
1789 | AV* av; |
1d7c1841 |
1790 | SV **itersvp; |
a0d0e21e |
1791 | |
924508f0 |
1792 | EXTEND(SP, 1); |
a0d0e21e |
1793 | cx = &cxstack[cxstack_ix]; |
6b35e009 |
1794 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 |
1795 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e |
1796 | |
1d7c1841 |
1797 | itersvp = CxITERVAR(cx); |
4633a7c4 |
1798 | av = cx->blk_loop.iterary; |
89ea2908 |
1799 | if (SvTYPE(av) != SVt_PVAV) { |
1800 | /* iterate ($min .. $max) */ |
1801 | if (cx->blk_loop.iterlval) { |
1802 | /* string increment */ |
1803 | register SV* cur = cx->blk_loop.iterlval; |
1804 | STRLEN maxlen; |
1805 | char *max = SvPV((SV*)av, maxlen); |
1806 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
1d7c1841 |
1807 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 |
1808 | /* safe to reuse old SV */ |
1d7c1841 |
1809 | sv_setsv(*itersvp, cur); |
eaa5c2d6 |
1810 | } |
1c846c1f |
1811 | else |
eaa5c2d6 |
1812 | { |
1813 | /* we need a fresh SV every time so that loop body sees a |
1814 | * completely new SV for closures/references to work as |
1815 | * they used to */ |
1d7c1841 |
1816 | SvREFCNT_dec(*itersvp); |
1817 | *itersvp = newSVsv(cur); |
eaa5c2d6 |
1818 | } |
89ea2908 |
1819 | if (strEQ(SvPVX(cur), max)) |
1820 | sv_setiv(cur, 0); /* terminate next time */ |
1821 | else |
1822 | sv_inc(cur); |
1823 | RETPUSHYES; |
1824 | } |
1825 | RETPUSHNO; |
1826 | } |
1827 | /* integer increment */ |
1828 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) |
1829 | RETPUSHNO; |
7f61b687 |
1830 | |
3db8f154 |
1831 | /* don't risk potential race */ |
1d7c1841 |
1832 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 |
1833 | /* safe to reuse old SV */ |
1d7c1841 |
1834 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 |
1835 | } |
1c846c1f |
1836 | else |
eaa5c2d6 |
1837 | { |
1838 | /* we need a fresh SV every time so that loop body sees a |
1839 | * completely new SV for closures/references to work as they |
1840 | * used to */ |
1d7c1841 |
1841 | SvREFCNT_dec(*itersvp); |
1842 | *itersvp = newSViv(cx->blk_loop.iterix++); |
eaa5c2d6 |
1843 | } |
89ea2908 |
1844 | RETPUSHYES; |
1845 | } |
1846 | |
1847 | /* iterate array */ |
3280af22 |
1848 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) |
4633a7c4 |
1849 | RETPUSHNO; |
a0d0e21e |
1850 | |
1d7c1841 |
1851 | SvREFCNT_dec(*itersvp); |
a0d0e21e |
1852 | |
d42935ef |
1853 | if (SvMAGICAL(av) || AvREIFY(av)) { |
1854 | SV **svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE); |
1855 | if (svp) |
1856 | sv = *svp; |
1857 | else |
1858 | sv = Nullsv; |
1859 | } |
1860 | else { |
1861 | sv = AvARRAY(av)[++cx->blk_loop.iterix]; |
1862 | } |
cccede53 |
1863 | if (sv && SvREFCNT(sv) == 0) { |
1864 | *itersvp = Nullsv; |
1865 | Perl_croak(aTHX_ |
1866 | "Use of freed value in iteration (perhaps you modified the iterated array within the loop?)"); |
1867 | } |
1868 | |
d42935ef |
1869 | if (sv) |
a0d0e21e |
1870 | SvTEMP_off(sv); |
a0d0e21e |
1871 | else |
3280af22 |
1872 | sv = &PL_sv_undef; |
8b530633 |
1873 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc |
1874 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc |
1875 | if (lv && SvREFCNT(lv) > 1) { |
1876 | SvREFCNT_dec(lv); |
1877 | lv = Nullsv; |
1878 | } |
5f05dabc |
1879 | if (lv) |
1880 | SvREFCNT_dec(LvTARG(lv)); |
1881 | else { |
68dc0745 |
1882 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc |
1883 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc |
1884 | LvTYPE(lv) = 'y'; |
14befaf4 |
1885 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
5f05dabc |
1886 | } |
1887 | LvTARG(lv) = SvREFCNT_inc(av); |
1888 | LvTARGOFF(lv) = cx->blk_loop.iterix; |
42718184 |
1889 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc |
1890 | sv = (SV*)lv; |
1891 | } |
a0d0e21e |
1892 | |
1d7c1841 |
1893 | *itersvp = SvREFCNT_inc(sv); |
a0d0e21e |
1894 | RETPUSHYES; |
1895 | } |
1896 | |
1897 | PP(pp_subst) |
1898 | { |
39644a26 |
1899 | dSP; dTARG; |
a0d0e21e |
1900 | register PMOP *pm = cPMOP; |
1901 | PMOP *rpm = pm; |
1902 | register SV *dstr; |
1903 | register char *s; |
1904 | char *strend; |
1905 | register char *m; |
1906 | char *c; |
1907 | register char *d; |
1908 | STRLEN clen; |
1909 | I32 iters = 0; |
1910 | I32 maxiters; |
1911 | register I32 i; |
1912 | bool once; |
71be2cbc |
1913 | bool rxtainted; |
a0d0e21e |
1914 | char *orig; |
22e551b9 |
1915 | I32 r_flags; |
aaa362c4 |
1916 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e |
1917 | STRLEN len; |
1918 | int force_on_match = 0; |
3280af22 |
1919 | I32 oldsave = PL_savestack_ix; |
792b2c16 |
1920 | STRLEN slen; |
f272994b |
1921 | bool doutf8 = FALSE; |
ed252734 |
1922 | #ifdef PERL_COPY_ON_WRITE |
1923 | bool is_cow; |
1924 | #endif |
db79b45b |
1925 | SV *nsv = Nullsv; |
a0d0e21e |
1926 | |
5cd24f17 |
1927 | /* known replacement string? */ |
1928 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; |
533c011a |
1929 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
1930 | TARG = POPs; |
1931 | else { |
54b9620d |
1932 | TARG = DEFSV; |
a0d0e21e |
1933 | EXTEND(SP,1); |
1c846c1f |
1934 | } |
d9f424b2 |
1935 | |
ed252734 |
1936 | #ifdef PERL_COPY_ON_WRITE |
1937 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, |
1938 | because they make integers such as 256 "false". */ |
1939 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; |
1940 | #else |
765f542d |
1941 | if (SvIsCOW(TARG)) |
1942 | sv_force_normal_flags(TARG,0); |
ed252734 |
1943 | #endif |
1944 | if ( |
1945 | #ifdef PERL_COPY_ON_WRITE |
1946 | !is_cow && |
1947 | #endif |
1948 | (SvREADONLY(TARG) |
68dc0745 |
1949 | || (SvTYPE(TARG) > SVt_PVLV |
ed252734 |
1950 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) |
d470f89e |
1951 | DIE(aTHX_ PL_no_modify); |
8ec5e241 |
1952 | PUTBACK; |
1953 | |
a0d0e21e |
1954 | s = SvPV(TARG, len); |
68dc0745 |
1955 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e |
1956 | force_on_match = 1; |
b3eb6a9b |
1957 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 |
1958 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
1959 | if (PL_tainted) |
b3eb6a9b |
1960 | rxtainted |= 2; |
9212bbba |
1961 | TAINT_NOT; |
a12c0f56 |
1962 | |
a30b2f1f |
1963 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 |
1964 | |
a0d0e21e |
1965 | force_it: |
1966 | if (!pm || !s) |
2269b42e |
1967 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e |
1968 | |
1969 | strend = s + len; |
a30b2f1f |
1970 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 |
1971 | maxiters = 2 * slen + 10; /* We can match twice at each |
1972 | position, once with zero-length, |
1973 | second time with non-zero. */ |
a0d0e21e |
1974 | |
3280af22 |
1975 | if (!rx->prelen && PL_curpm) { |
1976 | pm = PL_curpm; |
aaa362c4 |
1977 | rx = PM_GETRE(pm); |
a0d0e21e |
1978 | } |
22e551b9 |
1979 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
ed252734 |
1980 | ? REXEC_COPY_STR : 0; |
f722798b |
1981 | if (SvSCREAM(TARG)) |
22e551b9 |
1982 | r_flags |= REXEC_SCREAM; |
a0d0e21e |
1983 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 |
1984 | SAVEINT(PL_multiline); |
1985 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; |
a0d0e21e |
1986 | } |
1987 | orig = m = s; |
f722798b |
1988 | if (rx->reganch & RE_USE_INTUIT) { |
ee0b7718 |
1989 | PL_bostr = orig; |
f722798b |
1990 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1991 | |
1992 | if (!s) |
1993 | goto nope; |
1994 | /* How to do it in subst? */ |
1995 | /* if ( (rx->reganch & ROPT_CHECK_ALL) |
1c846c1f |
1996 | && !PL_sawampersand |
f722798b |
1997 | && ((rx->reganch & ROPT_NOSCAN) |
1998 | || !((rx->reganch & RE_INTUIT_TAIL) |
1999 | && (r_flags & REXEC_SCREAM)))) |
2000 | goto yup; |
2001 | */ |
a0d0e21e |
2002 | } |
71be2cbc |
2003 | |
2004 | /* only replace once? */ |
a0d0e21e |
2005 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc |
2006 | |
2007 | /* known replacement string? */ |
f272994b |
2008 | if (dstr) { |
8514a05a |
2009 | /* replacement needing upgrading? */ |
2010 | if (DO_UTF8(TARG) && !doutf8) { |
db79b45b |
2011 | nsv = sv_newmortal(); |
4a176938 |
2012 | SvSetSV(nsv, dstr); |
8514a05a |
2013 | if (PL_encoding) |
2014 | sv_recode_to_utf8(nsv, PL_encoding); |
2015 | else |
2016 | sv_utf8_upgrade(nsv); |
2017 | c = SvPV(nsv, clen); |
4a176938 |
2018 | doutf8 = TRUE; |
2019 | } |
2020 | else { |
2021 | c = SvPV(dstr, clen); |
2022 | doutf8 = DO_UTF8(dstr); |
8514a05a |
2023 | } |
f272994b |
2024 | } |
2025 | else { |
2026 | c = Nullch; |
2027 | doutf8 = FALSE; |
2028 | } |
2029 | |
71be2cbc |
2030 | /* can do inplace substitution? */ |
ed252734 |
2031 | if (c |
2032 | #ifdef PERL_COPY_ON_WRITE |
2033 | && !is_cow |
2034 | #endif |
2035 | && (I32)clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) |
db79b45b |
2036 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN) |
2037 | && (!doutf8 || SvUTF8(TARG))) { |
f722798b |
2038 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2039 | r_flags | REXEC_CHECKED)) |
2040 | { |
8ec5e241 |
2041 | SPAGAIN; |
3280af22 |
2042 | PUSHs(&PL_sv_no); |
71be2cbc |
2043 | LEAVE_SCOPE(oldsave); |
2044 | RETURN; |
2045 | } |
ed252734 |
2046 | #ifdef PERL_COPY_ON_WRITE |
2047 | if (SvIsCOW(TARG)) { |
2048 | assert (!force_on_match); |
2049 | goto have_a_cow; |
2050 | } |
2051 | #endif |
71be2cbc |
2052 | if (force_on_match) { |
2053 | force_on_match = 0; |
2054 | s = SvPV_force(TARG, len); |
2055 | goto force_it; |
2056 | } |
71be2cbc |
2057 | d = s; |
3280af22 |
2058 | PL_curpm = pm; |
71be2cbc |
2059 | SvSCREAM_off(TARG); /* disable possible screamer */ |
2060 | if (once) { |
48c036b1 |
2061 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
2062 | m = orig + rx->startp[0]; |
2063 | d = orig + rx->endp[0]; |
71be2cbc |
2064 | s = orig; |
2065 | if (m - s > strend - d) { /* faster to shorten from end */ |
2066 | if (clen) { |
2067 | Copy(c, m, clen, char); |
2068 | m += clen; |
a0d0e21e |
2069 | } |
71be2cbc |
2070 | i = strend - d; |
2071 | if (i > 0) { |
2072 | Move(d, m, i, char); |
2073 | m += i; |
a0d0e21e |
2074 | } |
71be2cbc |
2075 | *m = '\0'; |
2076 | SvCUR_set(TARG, m - s); |
2077 | } |
2078 | /*SUPPRESS 560*/ |
155aba94 |
2079 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc |
2080 | d -= clen; |
2081 | m = d; |
2082 | sv_chop(TARG, d-i); |
2083 | s += i; |
2084 | while (i--) |
2085 | *--d = *--s; |
2086 | if (clen) |
2087 | Copy(c, m, clen, char); |
2088 | } |
2089 | else if (clen) { |
2090 | d -= clen; |
2091 | sv_chop(TARG, d); |
2092 | Copy(c, d, clen, char); |
2093 | } |
2094 | else { |
2095 | sv_chop(TARG, d); |
2096 | } |
48c036b1 |
2097 | TAINT_IF(rxtainted & 1); |
8ec5e241 |
2098 | SPAGAIN; |
3280af22 |
2099 | PUSHs(&PL_sv_yes); |
71be2cbc |
2100 | } |
2101 | else { |
71be2cbc |
2102 | do { |
2103 | if (iters++ > maxiters) |
cea2e8a9 |
2104 | DIE(aTHX_ "Substitution loop"); |
d9f97599 |
2105 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
2106 | m = rx->startp[0] + orig; |
71be2cbc |
2107 | /*SUPPRESS 560*/ |
155aba94 |
2108 | if ((i = m - s)) { |
71be2cbc |
2109 | if (s != d) |
2110 | Move(s, d, i, char); |
2111 | d += i; |
a0d0e21e |
2112 | } |
71be2cbc |
2113 | if (clen) { |
2114 | Copy(c, d, clen, char); |
2115 | d += clen; |
2116 | } |
cf93c79d |
2117 | s = rx->endp[0] + orig; |
cea2e8a9 |
2118 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b |
2119 | TARG, NULL, |
2120 | /* don't match same null twice */ |
2121 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); |
71be2cbc |
2122 | if (s != d) { |
2123 | i = strend - s; |
2124 | SvCUR_set(TARG, d - SvPVX(TARG) + i); |
2125 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e |
2126 | } |
48c036b1 |
2127 | TAINT_IF(rxtainted & 1); |
8ec5e241 |
2128 | SPAGAIN; |
71be2cbc |
2129 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e |
2130 | } |
80b498e0 |
2131 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 |
2132 | TAINT_IF(rxtainted); |
8ec5e241 |
2133 | if (SvSMAGICAL(TARG)) { |
2134 | PUTBACK; |
2135 | mg_set(TARG); |
2136 | SPAGAIN; |
2137 | } |
9212bbba |
2138 | SvTAINT(TARG); |
aefe6dfc |
2139 | if (doutf8) |
2140 | SvUTF8_on(TARG); |
71be2cbc |
2141 | LEAVE_SCOPE(oldsave); |
2142 | RETURN; |
a0d0e21e |
2143 | } |
71be2cbc |
2144 | |
f722798b |
2145 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2146 | r_flags | REXEC_CHECKED)) |
2147 | { |
a0d0e21e |
2148 | if (force_on_match) { |
2149 | force_on_match = 0; |
2150 | s = SvPV_force(TARG, len); |
2151 | goto force_it; |
2152 | } |
ed252734 |
2153 | #ifdef PERL_COPY_ON_WRITE |
2154 | have_a_cow: |
2155 | #endif |
48c036b1 |
2156 | rxtainted |= RX_MATCH_TAINTED(rx); |
8ec5e241 |
2157 | dstr = NEWSV(25, len); |
a0d0e21e |
2158 | sv_setpvn(dstr, m, s-m); |
ffc61ed2 |
2159 | if (DO_UTF8(TARG)) |
2160 | SvUTF8_on(dstr); |
3280af22 |
2161 | PL_curpm = pm; |
a0d0e21e |
2162 | if (!c) { |
c09156bb |
2163 | register PERL_CONTEXT *cx; |
8ec5e241 |
2164 | SPAGAIN; |
d8f2cf8a |
2165 | ReREFCNT_inc(rx); |
a0d0e21e |
2166 | PUSHSUBST(cx); |
2167 | RETURNOP(cPMOP->op_pmreplroot); |
2168 | } |
cf93c79d |
2169 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e |
2170 | do { |
2171 | if (iters++ > maxiters) |
cea2e8a9 |
2172 | DIE(aTHX_ "Substitution loop"); |
d9f97599 |
2173 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
2174 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e |
2175 | m = s; |
2176 | s = orig; |
cf93c79d |
2177 | orig = rx->subbeg; |
a0d0e21e |
2178 | s = orig + (m - s); |
2179 | strend = s + (strend - m); |
2180 | } |
cf93c79d |
2181 | m = rx->startp[0] + orig; |
db79b45b |
2182 | if (doutf8 && !SvUTF8(dstr)) |
2183 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); |
2184 | else |
2185 | sv_catpvn(dstr, s, m-s); |
cf93c79d |
2186 | s = rx->endp[0] + orig; |
a0d0e21e |
2187 | if (clen) |
2188 | sv_catpvn(dstr, c, clen); |
2189 | if (once) |
2190 | break; |
ffc61ed2 |
2191 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2192 | TARG, NULL, r_flags)); |
db79b45b |
2193 | if (doutf8 && !DO_UTF8(TARG)) |
2194 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); |
89afcb60 |
2195 | else |
2196 | sv_catpvn(dstr, s, strend - s); |
748a9306 |
2197 | |
ed252734 |
2198 | #ifdef PERL_COPY_ON_WRITE |
2199 | /* The match may make the string COW. If so, brilliant, because that's |
2200 | just saved us one malloc, copy and free - the regexp has donated |
2201 | the old buffer, and we malloc an entirely new one, rather than the |
2202 | regexp malloc()ing a buffer and copying our original, only for |
2203 | us to throw it away here during the substitution. */ |
2204 | if (SvIsCOW(TARG)) { |
2205 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); |
2206 | } else |
2207 | #endif |
2208 | { |
2209 | (void)SvOOK_off(TARG); |
2210 | if (SvLEN(TARG)) |
2211 | Safefree(SvPVX(TARG)); |
2212 | } |
748a9306 |
2213 | SvPVX(TARG) = SvPVX(dstr); |
2214 | SvCUR_set(TARG, SvCUR(dstr)); |
2215 | SvLEN_set(TARG, SvLEN(dstr)); |
f272994b |
2216 | doutf8 |= DO_UTF8(dstr); |
748a9306 |
2217 | SvPVX(dstr) = 0; |
2218 | sv_free(dstr); |
2219 | |
48c036b1 |
2220 | TAINT_IF(rxtainted & 1); |
f878fbec |
2221 | SPAGAIN; |
48c036b1 |
2222 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2223 | |
a0d0e21e |
2224 | (void)SvPOK_only(TARG); |
f272994b |
2225 | if (doutf8) |
60aeb6fd |
2226 | SvUTF8_on(TARG); |
48c036b1 |
2227 | TAINT_IF(rxtainted); |
a0d0e21e |
2228 | SvSETMAGIC(TARG); |
9212bbba |
2229 | SvTAINT(TARG); |
4633a7c4 |
2230 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
2231 | RETURN; |
2232 | } |
5cd24f17 |
2233 | goto ret_no; |
a0d0e21e |
2234 | |
2235 | nope: |
1c846c1f |
2236 | ret_no: |
8ec5e241 |
2237 | SPAGAIN; |
3280af22 |
2238 | PUSHs(&PL_sv_no); |
4633a7c4 |
2239 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
2240 | RETURN; |
2241 | } |
2242 | |
2243 | PP(pp_grepwhile) |
2244 | { |
39644a26 |
2245 | dSP; |
a0d0e21e |
2246 | |
2247 | if (SvTRUEx(POPs)) |
3280af22 |
2248 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2249 | ++*PL_markstack_ptr; |
a0d0e21e |
2250 | LEAVE; /* exit inner scope */ |
2251 | |
2252 | /* All done yet? */ |
3280af22 |
2253 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e |
2254 | I32 items; |
54310121 |
2255 | I32 gimme = GIMME_V; |
a0d0e21e |
2256 | |
2257 | LEAVE; /* exit outer scope */ |
2258 | (void)POPMARK; /* pop src */ |
3280af22 |
2259 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e |
2260 | (void)POPMARK; /* pop dst */ |
3280af22 |
2261 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 |
2262 | if (gimme == G_SCALAR) { |
a0d0e21e |
2263 | dTARGET; |
2264 | XPUSHi(items); |
a0d0e21e |
2265 | } |
54310121 |
2266 | else if (gimme == G_ARRAY) |
2267 | SP += items; |
a0d0e21e |
2268 | RETURN; |
2269 | } |
2270 | else { |
2271 | SV *src; |
2272 | |
2273 | ENTER; /* enter inner scope */ |
1d7c1841 |
2274 | SAVEVPTR(PL_curpm); |
a0d0e21e |
2275 | |
3280af22 |
2276 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e |
2277 | SvTEMP_off(src); |
54b9620d |
2278 | DEFSV = src; |
a0d0e21e |
2279 | |
2280 | RETURNOP(cLOGOP->op_other); |
2281 | } |
2282 | } |
2283 | |
2284 | PP(pp_leavesub) |
2285 | { |
39644a26 |
2286 | dSP; |
a0d0e21e |
2287 | SV **mark; |
2288 | SV **newsp; |
2289 | PMOP *newpm; |
2290 | I32 gimme; |
c09156bb |
2291 | register PERL_CONTEXT *cx; |
b0d9ce38 |
2292 | SV *sv; |
a0d0e21e |
2293 | |
2294 | POPBLOCK(cx,newpm); |
1c846c1f |
2295 | |
a1f49e72 |
2296 | TAINT_NOT; |
a0d0e21e |
2297 | if (gimme == G_SCALAR) { |
2298 | MARK = newsp + 1; |
a29cdaf0 |
2299 | if (MARK <= SP) { |
a8bba7fa |
2300 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 |
2301 | if (SvTEMP(TOPs)) { |
2302 | *MARK = SvREFCNT_inc(TOPs); |
2303 | FREETMPS; |
2304 | sv_2mortal(*MARK); |
cd06dffe |
2305 | } |
2306 | else { |
959e3673 |
2307 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 |
2308 | FREETMPS; |
959e3673 |
2309 | *MARK = sv_mortalcopy(sv); |
2310 | SvREFCNT_dec(sv); |
a29cdaf0 |
2311 | } |
cd06dffe |
2312 | } |
2313 | else |
a29cdaf0 |
2314 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe |
2315 | } |
2316 | else { |
f86702cc |
2317 | MEXTEND(MARK, 0); |
3280af22 |
2318 | *MARK = &PL_sv_undef; |
a0d0e21e |
2319 | } |
2320 | SP = MARK; |
2321 | } |
54310121 |
2322 | else if (gimme == G_ARRAY) { |
f86702cc |
2323 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 |
2324 | if (!SvTEMP(*MARK)) { |
f86702cc |
2325 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 |
2326 | TAINT_NOT; /* Each item is independent */ |
2327 | } |
f86702cc |
2328 | } |
a0d0e21e |
2329 | } |
f86702cc |
2330 | PUTBACK; |
1c846c1f |
2331 | |
51d9a56b |
2332 | LEAVE; |
b0d9ce38 |
2333 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 |
2334 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e |
2335 | |
b0d9ce38 |
2336 | LEAVESUB(sv); |
a0d0e21e |
2337 | return pop_return(); |
2338 | } |
2339 | |
cd06dffe |
2340 | /* This duplicates the above code because the above code must not |
2341 | * get any slower by more conditions */ |
2342 | PP(pp_leavesublv) |
2343 | { |
39644a26 |
2344 | dSP; |
cd06dffe |
2345 | SV **mark; |
2346 | SV **newsp; |
2347 | PMOP *newpm; |
2348 | I32 gimme; |
2349 | register PERL_CONTEXT *cx; |
b0d9ce38 |
2350 | SV *sv; |
cd06dffe |
2351 | |
2352 | POPBLOCK(cx,newpm); |
1c846c1f |
2353 | |
cd06dffe |
2354 | TAINT_NOT; |
2355 | |
2356 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { |
2357 | /* We are an argument to a function or grep(). |
2358 | * This kind of lvalueness was legal before lvalue |
2359 | * subroutines too, so be backward compatible: |
2360 | * cannot report errors. */ |
2361 | |
2362 | /* Scalar context *is* possible, on the LHS of -> only, |
2363 | * as in f()->meth(). But this is not an lvalue. */ |
2364 | if (gimme == G_SCALAR) |
2365 | goto temporise; |
2366 | if (gimme == G_ARRAY) { |
a8bba7fa |
2367 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe |
2368 | goto temporise_array; |
2369 | EXTEND_MORTAL(SP - newsp); |
2370 | for (mark = newsp + 1; mark <= SP; mark++) { |
2371 | if (SvTEMP(*mark)) |
2372 | /* empty */ ; |
2373 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) |
2374 | *mark = sv_mortalcopy(*mark); |
2375 | else { |
2376 | /* Can be a localized value subject to deletion. */ |
2377 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2378 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2379 | } |
2380 | } |
2381 | } |
2382 | } |
2383 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ |
2384 | /* Here we go for robustness, not for speed, so we change all |
2385 | * the refcounts so the caller gets a live guy. Cannot set |
2386 | * TEMP, so sv_2mortal is out of question. */ |
a8bba7fa |
2387 | if (!CvLVALUE(cx->blk_sub.cv)) { |
51d9a56b |
2388 | LEAVE; |
b0d9ce38 |
2389 | POPSUB(cx,sv); |
d470f89e |
2390 | PL_curpm = newpm; |
b0d9ce38 |
2391 | LEAVESUB(sv); |
d470f89e |
2392 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2393 | } |
cd06dffe |
2394 | if (gimme == G_SCALAR) { |
2395 | MARK = newsp + 1; |
2396 | EXTEND_MORTAL(1); |
2397 | if (MARK == SP) { |
d470f89e |
2398 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
51d9a56b |
2399 | LEAVE; |
b0d9ce38 |
2400 | POPSUB(cx,sv); |
d470f89e |
2401 | PL_curpm = newpm; |
b0d9ce38 |
2402 | LEAVESUB(sv); |
e9f19e3c |
2403 | DIE(aTHX_ "Can't return %s from lvalue subroutine", |
2404 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" |
2405 | : "a readonly value" : "a temporary"); |
d470f89e |
2406 | } |
cd06dffe |
2407 | else { /* Can be a localized value |
2408 | * subject to deletion. */ |
2409 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2410 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2411 | } |
2412 | } |
d470f89e |
2413 | else { /* Should not happen? */ |
51d9a56b |
2414 | LEAVE; |
b0d9ce38 |
2415 | POPSUB(cx,sv); |
d470f89e |
2416 | PL_curpm = newpm; |
b0d9ce38 |
2417 | LEAVESUB(sv); |
d470f89e |
2418 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe |
2419 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e |
2420 | } |
cd06dffe |
2421 | SP = MARK; |
2422 | } |
2423 | else if (gimme == G_ARRAY) { |
2424 | EXTEND_MORTAL(SP - newsp); |
2425 | for (mark = newsp + 1; mark <= SP; mark++) { |
f206cdda |
2426 | if (*mark != &PL_sv_undef |
2427 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
d470f89e |
2428 | /* Might be flattened array after $#array = */ |
2429 | PUTBACK; |
51d9a56b |
2430 | LEAVE; |
b0d9ce38 |
2431 | POPSUB(cx,sv); |
d470f89e |
2432 | PL_curpm = newpm; |
b0d9ce38 |
2433 | LEAVESUB(sv); |
f206cdda |
2434 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2435 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); |
d470f89e |
2436 | } |
cd06dffe |
2437 | else { |
cd06dffe |
2438 | /* Can be a localized value subject to deletion. */ |
2439 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2440 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2441 | } |
2442 | } |
2443 | } |
2444 | } |
2445 | else { |
2446 | if (gimme == G_SCALAR) { |
2447 | temporise: |
2448 | MARK = newsp + 1; |
2449 | if (MARK <= SP) { |
a8bba7fa |
2450 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe |
2451 | if (SvTEMP(TOPs)) { |
2452 | *MARK = SvREFCNT_inc(TOPs); |
2453 | FREETMPS; |
2454 | sv_2mortal(*MARK); |
2455 | } |
2456 | else { |
959e3673 |
2457 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe |
2458 | FREETMPS; |
959e3673 |
2459 | *MARK = sv_mortalcopy(sv); |
2460 | SvREFCNT_dec(sv); |
cd06dffe |
2461 | } |
2462 | } |
2463 | else |
2464 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
2465 | } |
2466 | else { |
2467 | MEXTEND(MARK, 0); |
2468 | *MARK = &PL_sv_undef; |
2469 | } |
2470 | SP = MARK; |
2471 | } |
2472 | else if (gimme == G_ARRAY) { |
2473 | temporise_array: |
2474 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
2475 | if (!SvTEMP(*MARK)) { |
2476 | *MARK = sv_mortalcopy(*MARK); |
2477 | TAINT_NOT; /* Each item is independent */ |
2478 | } |
2479 | } |
2480 | } |
2481 | } |
2482 | PUTBACK; |
1c846c1f |
2483 | |
51d9a56b |
2484 | LEAVE; |
b0d9ce38 |
2485 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe |
2486 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2487 | |
b0d9ce38 |
2488 | LEAVESUB(sv); |
cd06dffe |
2489 | return pop_return(); |
2490 | } |
2491 | |
2492 | |
76e3520e |
2493 | STATIC CV * |
cea2e8a9 |
2494 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 |
2495 | { |
3280af22 |
2496 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 |
2497 | |
2498 | if (!PERLDB_SUB_NN) { |
2499 | GV *gv = CvGV(cv); |
2500 | |
2501 | save_item(dbsv); |
2502 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) |
1c846c1f |
2503 | || strEQ(GvNAME(gv), "END") |
491527d0 |
2504 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
2505 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) |
2506 | && (gv = (GV*)*svp) ))) { |
2507 | /* Use GV from the stack as a fallback. */ |
2508 | /* GV is potentially non-unique, or contain different CV. */ |
c2e66d9e |
2509 | SV *tmp = newRV((SV*)cv); |
2510 | sv_setsv(dbsv, tmp); |
2511 | SvREFCNT_dec(tmp); |
491527d0 |
2512 | } |
2513 | else { |
2514 | gv_efullname3(dbsv, gv, Nullch); |
2515 | } |
3de9ffa1 |
2516 | } |
2517 | else { |
155aba94 |
2518 | (void)SvUPGRADE(dbsv, SVt_PVIV); |
2519 | (void)SvIOK_on(dbsv); |
491527d0 |
2520 | SAVEIV(SvIVX(dbsv)); |
5bc28da9 |
2521 | SvIVX(dbsv) = PTR2IV(cv); /* Do it the quickest way */ |
3de9ffa1 |
2522 | } |
491527d0 |
2523 | |
3de9ffa1 |
2524 | if (CvXSUB(cv)) |
3280af22 |
2525 | PL_curcopdb = PL_curcop; |
2526 | cv = GvCV(PL_DBsub); |
3de9ffa1 |
2527 | return cv; |
2528 | } |
2529 | |
a0d0e21e |
2530 | PP(pp_entersub) |
2531 | { |
39644a26 |
2532 | dSP; dPOPss; |
a0d0e21e |
2533 | GV *gv; |
2534 | HV *stash; |
2535 | register CV *cv; |
c09156bb |
2536 | register PERL_CONTEXT *cx; |
5d94fbed |
2537 | I32 gimme; |
533c011a |
2538 | bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e |
2539 | |
2540 | if (!sv) |
cea2e8a9 |
2541 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e |
2542 | switch (SvTYPE(sv)) { |
f1025168 |
2543 | /* This is overwhelming the most common case: */ |
2544 | case SVt_PVGV: |
2545 | if (!(cv = GvCVu((GV*)sv))) |
2546 | cv = sv_2cv(sv, &stash, &gv, FALSE); |
2547 | if (!cv) { |
2548 | ENTER; |
2549 | SAVETMPS; |
2550 | goto try_autoload; |
2551 | } |
2552 | break; |
a0d0e21e |
2553 | default: |
2554 | if (!SvROK(sv)) { |
748a9306 |
2555 | char *sym; |
2d8e6c8d |
2556 | STRLEN n_a; |
748a9306 |
2557 | |
3280af22 |
2558 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a |
2559 | if (hasargs) |
3280af22 |
2560 | SP = PL_stack_base + POPMARK; |
a0d0e21e |
2561 | RETURN; |
fb73857a |
2562 | } |
15ff848f |
2563 | if (SvGMAGICAL(sv)) { |
2564 | mg_get(sv); |
f5f1d18e |
2565 | if (SvROK(sv)) |
2566 | goto got_rv; |
15ff848f |
2567 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; |
2568 | } |
2569 | else |
2d8e6c8d |
2570 | sym = SvPV(sv, n_a); |
15ff848f |
2571 | if (!sym) |
cea2e8a9 |
2572 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a |
2573 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
2574 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 |
2575 | cv = get_cv(sym, TRUE); |
a0d0e21e |
2576 | break; |
2577 | } |
f5f1d18e |
2578 | got_rv: |
f5284f61 |
2579 | { |
2580 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
2581 | tryAMAGICunDEREF(to_cv); |
2582 | } |
a0d0e21e |
2583 | cv = (CV*)SvRV(sv); |
2584 | if (SvTYPE(cv) == SVt_PVCV) |
2585 | break; |
2586 | /* FALL THROUGH */ |
2587 | case SVt_PVHV: |
2588 | case SVt_PVAV: |
cea2e8a9 |
2589 | DIE(aTHX_ "Not a CODE reference"); |
f1025168 |
2590 | /* This is the second most common case: */ |
a0d0e21e |
2591 | case SVt_PVCV: |
2592 | cv = (CV*)sv; |
2593 | break; |
a0d0e21e |
2594 | } |
2595 | |
2596 | ENTER; |
2597 | SAVETMPS; |
2598 | |
2599 | retry: |
a0d0e21e |
2600 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
f1025168 |
2601 | goto fooey; |
a0d0e21e |
2602 | } |
2603 | |
54310121 |
2604 | gimme = GIMME_V; |
67caa1fe |
2605 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
06492da6 |
2606 | if (CvASSERTION(cv) && PL_DBassertion) |
2607 | sv_setiv(PL_DBassertion, 1); |
2608 | |
4f01c5a5 |
2609 | cv = get_db_sub(&sv, cv); |
67caa1fe |
2610 | if (!cv) |
cea2e8a9 |
2611 | DIE(aTHX_ "No DBsub routine"); |
67caa1fe |
2612 | } |
a0d0e21e |
2613 | |
f1025168 |
2614 | if (!(CvXSUB(cv))) { |
2615 | /* This path taken at least 75% of the time */ |
a0d0e21e |
2616 | dMARK; |
2617 | register I32 items = SP - MARK; |
a0d0e21e |
2618 | AV* padlist = CvPADLIST(cv); |
533c011a |
2619 | push_return(PL_op->op_next); |
a0d0e21e |
2620 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2621 | PUSHSUB(cx); |
2622 | CvDEPTH(cv)++; |
6b35e009 |
2623 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2624 | * that eval'' ops within this sub know the correct lexical space. |
a3985cdc |
2625 | * Owing the speed considerations, we choose instead to search for |
2626 | * the cv using find_runcv() when calling doeval(). |
6b35e009 |
2627 | */ |
a0d0e21e |
2628 | if (CvDEPTH(cv) < 2) |
2629 | (void)SvREFCNT_inc(cv); |
dd2155a4 |
2630 | else { |
1d7c1841 |
2631 | PERL_STACK_OVERFLOW_CHECK(); |
dd2155a4 |
2632 | pad_push(padlist, CvDEPTH(cv), 1); |
a0d0e21e |
2633 | } |
dd2155a4 |
2634 | PAD_SET_CUR(padlist, CvDEPTH(cv)); |
6d4ff0d2 |
2635 | if (hasargs) |
6d4ff0d2 |
2636 | { |
2637 | AV* av; |
a0d0e21e |
2638 | SV** ary; |
2639 | |
77a005ab |
2640 | #if 0 |
bf49b057 |
2641 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 |
2642 | "%p entersub preparing @_\n", thr)); |
77a005ab |
2643 | #endif |
dd2155a4 |
2644 | av = (AV*)PAD_SVl(0); |
221373f0 |
2645 | if (AvREAL(av)) { |
2646 | /* @_ is normally not REAL--this should only ever |
2647 | * happen when DB::sub() calls things that modify @_ */ |
2648 | av_clear(av); |
2649 | AvREAL_off(av); |
2650 | AvREIFY_on(av); |
2651 | } |
3280af22 |
2652 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2653 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); |
dd2155a4 |
2654 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 |
2655 | cx->blk_sub.argarray = av; |
a0d0e21e |
2656 | ++MARK; |
2657 | |
2658 | if (items > AvMAX(av) + 1) { |
2659 | ary = AvALLOC(av); |
2660 | if (AvARRAY(av) != ary) { |
2661 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); |
2662 | SvPVX(av) = (char*)ary; |
2663 | } |
2664 | if (items > AvMAX(av) + 1) { |
2665 | AvMAX(av) = items - 1; |
2666 | Renew(ary,items,SV*); |
2667 | AvALLOC(av) = ary; |
2668 | SvPVX(av) = (char*)ary; |
2669 | } |
2670 | } |
2671 | Copy(MARK,AvARRAY(av),items,SV*); |
93965878 |
2672 | AvFILLp(av) = items - 1; |
1c846c1f |
2673 | |
a0d0e21e |
2674 | while (items--) { |
2675 | if (*MARK) |
2676 | SvTEMP_off(*MARK); |
2677 | MARK++; |
2678 | } |
2679 | } |
4a925ff6 |
2680 | /* warning must come *after* we fully set up the context |
2681 | * stuff so that __WARN__ handlers can safely dounwind() |
2682 | * if they want to |
2683 | */ |
2684 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) |
2685 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) |
2686 | sub_crush_depth(cv); |
77a005ab |
2687 | #if 0 |
bf49b057 |
2688 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 |
2689 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab |
2690 | #endif |
a0d0e21e |
2691 | RETURNOP(CvSTART(cv)); |
2692 | } |
f1025168 |
2693 | else { |
2694 | #ifdef PERL_XSUB_OLDSTYLE |
2695 | if (CvOLDSTYLE(cv)) { |
2696 | I32 (*fp3)(int,int,int); |
2697 | dMARK; |
2698 | register I32 items = SP - MARK; |
2699 | /* We dont worry to copy from @_. */ |
2700 | while (SP > mark) { |
2701 | SP[1] = SP[0]; |
2702 | SP--; |
2703 | } |
2704 | PL_stack_sp = mark + 1; |
2705 | fp3 = (I32(*)(int,int,int))CvXSUB(cv); |
2706 | items = (*fp3)(CvXSUBANY(cv).any_i32, |
2707 | MARK - PL_stack_base + 1, |
2708 | items); |
2709 | PL_stack_sp = PL_stack_base + items; |
2710 | } |
2711 | else |
2712 | #endif /* PERL_XSUB_OLDSTYLE */ |
2713 | { |
2714 | I32 markix = TOPMARK; |
2715 | |
2716 | PUTBACK; |
2717 | |
2718 | if (!hasargs) { |
2719 | /* Need to copy @_ to stack. Alternative may be to |
2720 | * switch stack to @_, and copy return values |
2721 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ |
2722 | AV* av; |
2723 | I32 items; |
2724 | av = GvAV(PL_defgv); |
2725 | items = AvFILLp(av) + 1; /* @_ is not tieable */ |
2726 | |
2727 | if (items) { |
2728 | /* Mark is at the end of the stack. */ |
2729 | EXTEND(SP, items); |
2730 | Copy(AvARRAY(av), SP + 1, items, SV*); |
2731 | SP += items; |
2732 | PUTBACK ; |
2733 | } |
2734 | } |
2735 | /* We assume first XSUB in &DB::sub is the called one. */ |
2736 | if (PL_curcopdb) { |
2737 | SAVEVPTR(PL_curcop); |
2738 | PL_curcop = PL_curcopdb; |
2739 | PL_curcopdb = NULL; |
2740 | } |
2741 | /* Do we need to open block here? XXXX */ |
2742 | (void)(*CvXSUB(cv))(aTHX_ cv); |
2743 | |
2744 | /* Enforce some sanity in scalar context. */ |
2745 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { |
2746 | if (markix > PL_stack_sp - PL_stack_base) |
2747 | *(PL_stack_base + markix) = &PL_sv_undef; |
2748 | else |
2749 | *(PL_stack_base + markix) = *PL_stack_sp; |
2750 | PL_stack_sp = PL_stack_base + markix; |
2751 | } |
2752 | } |
2753 | LEAVE; |
2754 | return NORMAL; |
2755 | } |
2756 | |
2757 | assert (0); /* Cannot get here. */ |
2758 | /* This is deliberately moved here as spaghetti code to keep it out of the |
2759 | hot path. */ |
2760 | { |
2761 | GV* autogv; |
2762 | SV* sub_name; |
2763 | |
2764 | fooey: |
2765 | /* anonymous or undef'd function leaves us no recourse */ |
2766 | if (CvANON(cv) || !(gv = CvGV(cv))) |
2767 | DIE(aTHX_ "Undefined subroutine called"); |
2768 | |
2769 | /* autoloaded stub? */ |
2770 | if (cv != GvCV(gv)) { |
2771 | cv = GvCV(gv); |
2772 | } |
2773 | /* should call AUTOLOAD now? */ |
2774 | else { |
2775 | try_autoload: |
2776 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
2777 | FALSE))) |
2778 | { |
2779 | cv = GvCV(autogv); |
2780 | } |
2781 | /* sorry */ |
2782 | else { |
2783 | sub_name = sv_newmortal(); |
2784 | gv_efullname3(sub_name, gv, Nullch); |
35c1215d |
2785 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", sub_name); |
f1025168 |
2786 | } |
2787 | } |
2788 | if (!cv) |
2789 | DIE(aTHX_ "Not a CODE reference"); |
2790 | goto retry; |
2791 | } |
a0d0e21e |
2792 | } |
2793 | |
44a8e56a |
2794 | void |
864dbfa3 |
2795 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a |
2796 | { |
2797 | if (CvANON(cv)) |
9014280d |
2798 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a |
2799 | else { |
2800 | SV* tmpstr = sv_newmortal(); |
2801 | gv_efullname3(tmpstr, CvGV(cv), Nullch); |
35c1215d |
2802 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
2803 | tmpstr); |
44a8e56a |
2804 | } |
2805 | } |
2806 | |
a0d0e21e |
2807 | PP(pp_aelem) |
2808 | { |
39644a26 |
2809 | dSP; |
a0d0e21e |
2810 | SV** svp; |
d804643f |
2811 | SV* elemsv = POPs; |
2812 | IV elem = SvIV(elemsv); |
68dc0745 |
2813 | AV* av = (AV*)POPs; |
78f9721b |
2814 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a |
2815 | U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av)); |
be6c24e0 |
2816 | SV *sv; |
a0d0e21e |
2817 | |
e35c1634 |
2818 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
35c1215d |
2819 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Use of reference \"%"SVf"\" as array index", elemsv); |
748a9306 |
2820 | if (elem > 0) |
3280af22 |
2821 | elem -= PL_curcop->cop_arybase; |
a0d0e21e |
2822 | if (SvTYPE(av) != SVt_PVAV) |
2823 | RETPUSHUNDEF; |
68dc0745 |
2824 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e |
2825 | if (lval) { |
3280af22 |
2826 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 |
2827 | SV* lv; |
2828 | if (!defer) |
cea2e8a9 |
2829 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 |
2830 | lv = sv_newmortal(); |
2831 | sv_upgrade(lv, SVt_PVLV); |
2832 | LvTYPE(lv) = 'y'; |
14befaf4 |
2833 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 |
2834 | LvTARG(lv) = SvREFCNT_inc(av); |
2835 | LvTARGOFF(lv) = elem; |
2836 | LvTARGLEN(lv) = 1; |
2837 | PUSHs(lv); |
2838 | RETURN; |
2839 | } |
bfc4de9f |
2840 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 |
2841 | save_aelem(av, elem, svp); |
533c011a |
2842 | else if (PL_op->op_private & OPpDEREF) |
2843 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); |
a0d0e21e |
2844 | } |
3280af22 |
2845 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 |
2846 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2847 | sv = sv_mortalcopy(sv); |
2848 | PUSHs(sv); |
a0d0e21e |
2849 | RETURN; |
2850 | } |
2851 | |
02a9e968 |
2852 | void |
864dbfa3 |
2853 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 |
2854 | { |
2855 | if (SvGMAGICAL(sv)) |
2856 | mg_get(sv); |
2857 | if (!SvOK(sv)) { |
2858 | if (SvREADONLY(sv)) |
cea2e8a9 |
2859 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc |
2860 | if (SvTYPE(sv) < SVt_RV) |
2861 | sv_upgrade(sv, SVt_RV); |
2862 | else if (SvTYPE(sv) >= SVt_PV) { |
2863 | (void)SvOOK_off(sv); |
2864 | Safefree(SvPVX(sv)); |
2865 | SvLEN(sv) = SvCUR(sv) = 0; |
2866 | } |
68dc0745 |
2867 | switch (to_what) { |
5f05dabc |
2868 | case OPpDEREF_SV: |
8c52afec |
2869 | SvRV(sv) = NEWSV(355,0); |
5f05dabc |
2870 | break; |
2871 | case OPpDEREF_AV: |
2872 | SvRV(sv) = (SV*)newAV(); |
2873 | break; |
2874 | case OPpDEREF_HV: |
2875 | SvRV(sv) = (SV*)newHV(); |
2876 | break; |
2877 | } |
02a9e968 |
2878 | SvROK_on(sv); |
2879 | SvSETMAGIC(sv); |
2880 | } |
2881 | } |
2882 | |
a0d0e21e |
2883 | PP(pp_method) |
2884 | { |
39644a26 |
2885 | dSP; |
f5d5a27c |
2886 | SV* sv = TOPs; |
2887 | |
2888 | if (SvROK(sv)) { |
eda383f2 |
2889 | SV* rsv = SvRV(sv); |
f5d5a27c |
2890 | if (SvTYPE(rsv) == SVt_PVCV) { |
2891 | SETs(rsv); |
2892 | RETURN; |
2893 | } |
2894 | } |
2895 | |
2896 | SETs(method_common(sv, Null(U32*))); |
2897 | RETURN; |
2898 | } |
2899 | |
2900 | PP(pp_method_named) |
2901 | { |
39644a26 |
2902 | dSP; |
3848b962 |
2903 | SV* sv = cSVOP_sv; |
f5d5a27c |
2904 | U32 hash = SvUVX(sv); |
2905 | |
2906 | XPUSHs(method_common(sv, &hash)); |
2907 | RETURN; |
2908 | } |
2909 | |
2910 | STATIC SV * |
2911 | S_method_common(pTHX_ SV* meth, U32* hashp) |
2912 | { |
a0d0e21e |
2913 | SV* sv; |
2914 | SV* ob; |
2915 | GV* gv; |
56304f61 |
2916 | HV* stash; |
2917 | char* name; |
f5d5a27c |
2918 | STRLEN namelen; |
9c5ffd7c |
2919 | char* packname = 0; |
0dae17bd |
2920 | SV *packsv = Nullsv; |
ac91690f |
2921 | STRLEN packlen; |
a0d0e21e |
2922 | |
f5d5a27c |
2923 | name = SvPV(meth, namelen); |
3280af22 |
2924 | sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c |
2925 | |
4f1b7578 |
2926 | if (!sv) |
2927 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); |
2928 | |
16d20bd9 |
2929 | if (SvGMAGICAL(sv)) |
af09ea45 |
2930 | mg_get(sv); |
a0d0e21e |
2931 | if (SvROK(sv)) |
16d20bd9 |
2932 | ob = (SV*)SvRV(sv); |
a0d0e21e |
2933 | else { |
2934 | GV* iogv; |
a0d0e21e |
2935 | |
af09ea45 |
2936 | /* this isn't a reference */ |
56304f61 |
2937 | packname = Nullch; |
081fc587 |
2938 | |
2939 | if(SvOK(sv) && (packname = SvPV(sv, packlen))) { |
7e8961ec |
2940 | HE* he; |
2941 | he = hv_fetch_ent(PL_stashcache, sv, 0, 0); |
081fc587 |
2942 | if (he) { |
5e6396ae |
2943 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
081fc587 |
2944 | goto fetch; |
2945 | } |
2946 | } |
2947 | |
a0d0e21e |
2948 | if (!SvOK(sv) || |
05f5af9a |
2949 | !(packname) || |
a0d0e21e |
2950 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
2951 | !(ob=(SV*)GvIO(iogv))) |
2952 | { |
af09ea45 |
2953 | /* this isn't the name of a filehandle either */ |
1c846c1f |
2954 | if (!packname || |
fd400ab9 |
2955 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 |
2956 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd |
2957 | : !isIDFIRST(*packname) |
2958 | )) |
2959 | { |
f5d5a27c |
2960 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
2961 | SvOK(sv) ? "without a package or object reference" |
2962 | : "on an undefined value"); |
834a4ddd |
2963 | } |
af09ea45 |
2964 | /* assume it's a package name */ |
2965 | stash = gv_stashpvn(packname, packlen, FALSE); |
0dae17bd |
2966 | if (!stash) |
2967 | packsv = sv; |
081fc587 |
2968 | else { |
5e6396ae |
2969 | SV* ref = newSViv(PTR2IV(stash)); |
7e8961ec |
2970 | hv_store(PL_stashcache, packname, packlen, ref, 0); |
2971 | } |
ac91690f |
2972 | goto fetch; |
a0d0e21e |
2973 | } |
af09ea45 |
2974 | /* it _is_ a filehandle name -- replace with a reference */ |
3280af22 |
2975 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e |
2976 | } |
2977 | |
af09ea45 |
2978 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 |
2979 | if (!ob || !(SvOBJECT(ob) |
2980 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) |
2981 | && SvOBJECT(ob)))) |
2982 | { |
f5d5a27c |
2983 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
2984 | name); |
f0d43078 |
2985 | } |
a0d0e21e |
2986 | |
56304f61 |
2987 | stash = SvSTASH(ob); |
a0d0e21e |
2988 | |
ac91690f |
2989 | fetch: |
af09ea45 |
2990 | /* NOTE: stash may be null, hope hv_fetch_ent and |
2991 | gv_fetchmethod can cope (it seems they can) */ |
2992 | |
f5d5a27c |
2993 | /* shortcut for simple names */ |
2994 | if (hashp) { |
2995 | HE* he = hv_fetch_ent(stash, meth, 0, *hashp); |
2996 | if (he) { |
2997 | gv = (GV*)HeVAL(he); |
2998 | if (isGV(gv) && GvCV(gv) && |
2999 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) |
3000 | return (SV*)GvCV(gv); |
3001 | } |
3002 | } |
3003 | |
0dae17bd |
3004 | gv = gv_fetchmethod(stash ? stash : (HV*)packsv, name); |
af09ea45 |
3005 | |
56304f61 |
3006 | if (!gv) { |
af09ea45 |
3007 | /* This code tries to figure out just what went wrong with |
3008 | gv_fetchmethod. It therefore needs to duplicate a lot of |
3009 | the internals of that function. We can't move it inside |
3010 | Perl_gv_fetchmethod_autoload(), however, since that would |
3011 | cause UNIVERSAL->can("NoSuchPackage::foo") to croak, and we |
3012 | don't want that. |
3013 | */ |
56304f61 |
3014 | char* leaf = name; |
3015 | char* sep = Nullch; |
3016 | char* p; |
3017 | |
3018 | for (p = name; *p; p++) { |
3019 | if (*p == '\'') |
3020 | sep = p, leaf = p + 1; |
3021 | else if (*p == ':' && *(p + 1) == ':') |
3022 | sep = p, leaf = p + 2; |
3023 | } |
3024 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { |
af09ea45 |
3025 | /* the method name is unqualified or starts with SUPER:: */ |
3026 | packname = sep ? CopSTASHPV(PL_curcop) : |
3027 | stash ? HvNAME(stash) : packname; |
56304f61 |
3028 | packlen = strlen(packname); |
3029 | } |
3030 | else { |
af09ea45 |
3031 | /* the method name is qualified */ |
56304f61 |
3032 | packname = name; |
3033 | packlen = sep - name; |
3034 | } |
af09ea45 |
3035 | |
3036 | /* we're relying on gv_fetchmethod not autovivifying the stash */ |
3037 | if (gv_stashpvn(packname, packlen, FALSE)) { |
c1899e02 |
3038 | Perl_croak(aTHX_ |
af09ea45 |
3039 | "Can't locate object method \"%s\" via package \"%.*s\"", |
3040 | leaf, (int)packlen, packname); |
c1899e02 |
3041 | } |
3042 | else { |
3043 | Perl_croak(aTHX_ |
af09ea45 |
3044 | "Can't locate object method \"%s\" via package \"%.*s\"" |
3045 | " (perhaps you forgot to load \"%.*s\"?)", |
3046 | leaf, (int)packlen, packname, (int)packlen, packname); |
c1899e02 |
3047 | } |
56304f61 |
3048 | } |
f5d5a27c |
3049 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e |
3050 | } |