Commit | Line | Data |
a0d0e21e |
1 | /* pp_hot.c |
2 | * |
4c79ee7a |
3 | * Copyright (c) 1991-2003, Larry Wall |
a0d0e21e |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
8 | */ |
9 | |
10 | /* |
11 | * Then he heard Merry change the note, and up went the Horn-cry of Buckland, |
12 | * shaking the air. |
13 | * |
14 | * Awake! Awake! Fear, Fire, Foes! Awake! |
15 | * Fire, Foes! Awake! |
16 | */ |
17 | |
18 | #include "EXTERN.h" |
864dbfa3 |
19 | #define PERL_IN_PP_HOT_C |
a0d0e21e |
20 | #include "perl.h" |
21 | |
22 | /* Hot code. */ |
23 | |
24 | PP(pp_const) |
25 | { |
39644a26 |
26 | dSP; |
1d7c1841 |
27 | XPUSHs(cSVOP_sv); |
a0d0e21e |
28 | RETURN; |
29 | } |
30 | |
31 | PP(pp_nextstate) |
32 | { |
533c011a |
33 | PL_curcop = (COP*)PL_op; |
a0d0e21e |
34 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 |
35 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e |
36 | FREETMPS; |
37 | return NORMAL; |
38 | } |
39 | |
40 | PP(pp_gvsv) |
41 | { |
39644a26 |
42 | dSP; |
924508f0 |
43 | EXTEND(SP,1); |
533c011a |
44 | if (PL_op->op_private & OPpLVAL_INTRO) |
1d7c1841 |
45 | PUSHs(save_scalar(cGVOP_gv)); |
a0d0e21e |
46 | else |
1d7c1841 |
47 | PUSHs(GvSV(cGVOP_gv)); |
a0d0e21e |
48 | RETURN; |
49 | } |
50 | |
51 | PP(pp_null) |
52 | { |
53 | return NORMAL; |
54 | } |
55 | |
7399586d |
56 | PP(pp_setstate) |
57 | { |
58 | PL_curcop = (COP*)PL_op; |
59 | return NORMAL; |
60 | } |
61 | |
a0d0e21e |
62 | PP(pp_pushmark) |
63 | { |
3280af22 |
64 | PUSHMARK(PL_stack_sp); |
a0d0e21e |
65 | return NORMAL; |
66 | } |
67 | |
68 | PP(pp_stringify) |
69 | { |
39644a26 |
70 | dSP; dTARGET; |
6050d10e |
71 | sv_copypv(TARG,TOPs); |
a0d0e21e |
72 | SETTARG; |
73 | RETURN; |
74 | } |
75 | |
76 | PP(pp_gv) |
77 | { |
39644a26 |
78 | dSP; |
1d7c1841 |
79 | XPUSHs((SV*)cGVOP_gv); |
a0d0e21e |
80 | RETURN; |
81 | } |
82 | |
83 | PP(pp_and) |
84 | { |
39644a26 |
85 | dSP; |
a0d0e21e |
86 | if (!SvTRUE(TOPs)) |
87 | RETURN; |
88 | else { |
89 | --SP; |
90 | RETURNOP(cLOGOP->op_other); |
91 | } |
92 | } |
93 | |
94 | PP(pp_sassign) |
95 | { |
39644a26 |
96 | dSP; dPOPTOPssrl; |
748a9306 |
97 | |
533c011a |
98 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
a0d0e21e |
99 | SV *temp; |
100 | temp = left; left = right; right = temp; |
101 | } |
3280af22 |
102 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e |
103 | TAINT_NOT; |
54310121 |
104 | SvSetMagicSV(right, left); |
a0d0e21e |
105 | SETs(right); |
106 | RETURN; |
107 | } |
108 | |
109 | PP(pp_cond_expr) |
110 | { |
39644a26 |
111 | dSP; |
a0d0e21e |
112 | if (SvTRUEx(POPs)) |
1a67a97c |
113 | RETURNOP(cLOGOP->op_other); |
a0d0e21e |
114 | else |
1a67a97c |
115 | RETURNOP(cLOGOP->op_next); |
a0d0e21e |
116 | } |
117 | |
118 | PP(pp_unstack) |
119 | { |
120 | I32 oldsave; |
121 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 |
122 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e |
123 | FREETMPS; |
3280af22 |
124 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e |
125 | LEAVE_SCOPE(oldsave); |
126 | return NORMAL; |
127 | } |
128 | |
a0d0e21e |
129 | PP(pp_concat) |
130 | { |
39644a26 |
131 | dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 |
132 | { |
133 | dPOPTOPssrl; |
8d6d96c1 |
134 | STRLEN llen; |
135 | char* lpv; |
136 | bool lbyte; |
137 | STRLEN rlen; |
138 | char* rpv = SvPV(right, rlen); /* mg_get(right) happens here */ |
db79b45b |
139 | bool rbyte = !SvUTF8(right), rcopied = FALSE; |
8d6d96c1 |
140 | |
141 | if (TARG == right && right != left) { |
142 | right = sv_2mortal(newSVpvn(rpv, rlen)); |
143 | rpv = SvPV(right, rlen); /* no point setting UTF8 here */ |
db79b45b |
144 | rcopied = TRUE; |
8d6d96c1 |
145 | } |
7889fe52 |
146 | |
8d6d96c1 |
147 | if (TARG != left) { |
148 | lpv = SvPV(left, llen); /* mg_get(left) may happen here */ |
149 | lbyte = !SvUTF8(left); |
150 | sv_setpvn(TARG, lpv, llen); |
151 | if (!lbyte) |
152 | SvUTF8_on(TARG); |
153 | else |
154 | SvUTF8_off(TARG); |
155 | } |
156 | else { /* TARG == left */ |
157 | if (SvGMAGICAL(left)) |
158 | mg_get(left); /* or mg_get(left) may happen here */ |
159 | if (!SvOK(TARG)) |
160 | sv_setpv(left, ""); |
161 | lpv = SvPV_nomg(left, llen); |
162 | lbyte = !SvUTF8(left); |
163 | } |
a12c0f56 |
164 | |
fd15e783 |
165 | #if defined(PERL_Y2KWARN) |
166 | if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K) && SvOK(TARG)) { |
8d6d96c1 |
167 | if (llen >= 2 && lpv[llen - 2] == '1' && lpv[llen - 1] == '9' |
168 | && (llen == 2 || !isDIGIT(lpv[llen - 3]))) |
169 | { |
9014280d |
170 | Perl_warner(aTHX_ packWARN(WARN_Y2K), "Possible Y2K bug: %s", |
8d6d96c1 |
171 | "about to append an integer to '19'"); |
172 | } |
fd15e783 |
173 | } |
174 | #endif |
175 | |
8d6d96c1 |
176 | if (lbyte != rbyte) { |
177 | if (lbyte) |
178 | sv_utf8_upgrade_nomg(TARG); |
179 | else { |
db79b45b |
180 | if (!rcopied) |
181 | right = sv_2mortal(newSVpvn(rpv, rlen)); |
8d6d96c1 |
182 | sv_utf8_upgrade_nomg(right); |
183 | rpv = SvPV(right, rlen); |
69b47968 |
184 | } |
a0d0e21e |
185 | } |
8d6d96c1 |
186 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 |
187 | |
a0d0e21e |
188 | SETTARG; |
189 | RETURN; |
748a9306 |
190 | } |
a0d0e21e |
191 | } |
192 | |
193 | PP(pp_padsv) |
194 | { |
39644a26 |
195 | dSP; dTARGET; |
a0d0e21e |
196 | XPUSHs(TARG); |
533c011a |
197 | if (PL_op->op_flags & OPf_MOD) { |
198 | if (PL_op->op_private & OPpLVAL_INTRO) |
dd2155a4 |
199 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); |
533c011a |
200 | else if (PL_op->op_private & OPpDEREF) { |
8ec5e241 |
201 | PUTBACK; |
dd2155a4 |
202 | vivify_ref(PAD_SVl(PL_op->op_targ), PL_op->op_private & OPpDEREF); |
8ec5e241 |
203 | SPAGAIN; |
204 | } |
4633a7c4 |
205 | } |
a0d0e21e |
206 | RETURN; |
207 | } |
208 | |
209 | PP(pp_readline) |
210 | { |
f5284f61 |
211 | tryAMAGICunTARGET(iter, 0); |
3280af22 |
212 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 |
213 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f |
214 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 |
215 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 |
216 | else { |
f5284f61 |
217 | dSP; |
218 | XPUSHs((SV*)PL_last_in_gv); |
219 | PUTBACK; |
cea2e8a9 |
220 | pp_rv2gv(); |
f5284f61 |
221 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 |
222 | } |
223 | } |
a0d0e21e |
224 | return do_readline(); |
225 | } |
226 | |
227 | PP(pp_eq) |
228 | { |
39644a26 |
229 | dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f |
230 | #ifndef NV_PRESERVES_UV |
231 | if (SvROK(TOPs) && SvROK(TOPm1s)) { |
e61d22ef |
232 | SP--; |
233 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); |
4c9fe80f |
234 | RETURN; |
235 | } |
236 | #endif |
28e5dec8 |
237 | #ifdef PERL_PRESERVE_IVUV |
238 | SvIV_please(TOPs); |
239 | if (SvIOK(TOPs)) { |
4c9fe80f |
240 | /* Unless the left argument is integer in range we are going |
241 | to have to use NV maths. Hence only attempt to coerce the |
242 | right argument if we know the left is integer. */ |
28e5dec8 |
243 | SvIV_please(TOPm1s); |
244 | if (SvIOK(TOPm1s)) { |
245 | bool auvok = SvUOK(TOPm1s); |
246 | bool buvok = SvUOK(TOPs); |
a12c0f56 |
247 | |
1605159e |
248 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
249 | /* Casting IV to UV before comparison isn't going to matter |
250 | on 2s complement. On 1s complement or sign&magnitude |
251 | (if we have any of them) it could to make negative zero |
252 | differ from normal zero. As I understand it. (Need to |
253 | check - is negative zero implementation defined behaviour |
254 | anyway?). NWC */ |
255 | UV buv = SvUVX(POPs); |
256 | UV auv = SvUVX(TOPs); |
28e5dec8 |
257 | |
28e5dec8 |
258 | SETs(boolSV(auv == buv)); |
259 | RETURN; |
260 | } |
261 | { /* ## Mixed IV,UV ## */ |
1605159e |
262 | SV *ivp, *uvp; |
28e5dec8 |
263 | IV iv; |
28e5dec8 |
264 | |
1605159e |
265 | /* == is commutative so doesn't matter which is left or right */ |
28e5dec8 |
266 | if (auvok) { |
1605159e |
267 | /* top of stack (b) is the iv */ |
268 | ivp = *SP; |
269 | uvp = *--SP; |
270 | } else { |
271 | uvp = *SP; |
272 | ivp = *--SP; |
273 | } |
274 | iv = SvIVX(ivp); |
275 | if (iv < 0) { |
276 | /* As uv is a UV, it's >0, so it cannot be == */ |
277 | SETs(&PL_sv_no); |
278 | RETURN; |
279 | } |
28e5dec8 |
280 | /* we know iv is >= 0 */ |
1605159e |
281 | SETs(boolSV((UV)iv == SvUVX(uvp))); |
28e5dec8 |
282 | RETURN; |
283 | } |
284 | } |
285 | } |
286 | #endif |
a0d0e21e |
287 | { |
288 | dPOPnv; |
54310121 |
289 | SETs(boolSV(TOPn == value)); |
a0d0e21e |
290 | RETURN; |
291 | } |
292 | } |
293 | |
294 | PP(pp_preinc) |
295 | { |
39644a26 |
296 | dSP; |
3510b4a1 |
297 | if (SvTYPE(TOPs) > SVt_PVLV) |
d470f89e |
298 | DIE(aTHX_ PL_no_modify); |
3510b4a1 |
299 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
300 | && SvIVX(TOPs) != IV_MAX) |
55497cff |
301 | { |
748a9306 |
302 | ++SvIVX(TOPs); |
55497cff |
303 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 |
304 | } |
28e5dec8 |
305 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 |
306 | sv_inc(TOPs); |
a0d0e21e |
307 | SvSETMAGIC(TOPs); |
308 | return NORMAL; |
309 | } |
310 | |
311 | PP(pp_or) |
312 | { |
39644a26 |
313 | dSP; |
a0d0e21e |
314 | if (SvTRUE(TOPs)) |
315 | RETURN; |
316 | else { |
317 | --SP; |
318 | RETURNOP(cLOGOP->op_other); |
319 | } |
320 | } |
321 | |
c963b151 |
322 | PP(pp_dor) |
323 | { |
324 | /* Most of this is lifted straight from pp_defined */ |
325 | dSP; |
326 | register SV* sv; |
327 | |
328 | sv = TOPs; |
329 | if (!sv || !SvANY(sv)) { |
330 | --SP; |
331 | RETURNOP(cLOGOP->op_other); |
332 | } |
333 | |
334 | switch (SvTYPE(sv)) { |
335 | case SVt_PVAV: |
336 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) |
337 | RETURN; |
338 | break; |
339 | case SVt_PVHV: |
340 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) |
341 | RETURN; |
342 | break; |
343 | case SVt_PVCV: |
344 | if (CvROOT(sv) || CvXSUB(sv)) |
345 | RETURN; |
346 | break; |
347 | default: |
348 | if (SvGMAGICAL(sv)) |
349 | mg_get(sv); |
350 | if (SvOK(sv)) |
351 | RETURN; |
352 | } |
353 | |
354 | --SP; |
355 | RETURNOP(cLOGOP->op_other); |
356 | } |
357 | |
a0d0e21e |
358 | PP(pp_add) |
359 | { |
39644a26 |
360 | dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 |
361 | useleft = USE_LEFT(TOPm1s); |
362 | #ifdef PERL_PRESERVE_IVUV |
363 | /* We must see if we can perform the addition with integers if possible, |
364 | as the integer code detects overflow while the NV code doesn't. |
365 | If either argument hasn't had a numeric conversion yet attempt to get |
366 | the IV. It's important to do this now, rather than just assuming that |
367 | it's not IOK as a PV of "9223372036854775806" may not take well to NV |
368 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to |
369 | integer in case the second argument is IV=9223372036854775806 |
370 | We can (now) rely on sv_2iv to do the right thing, only setting the |
371 | public IOK flag if the value in the NV (or PV) slot is truly integer. |
372 | |
373 | A side effect is that this also aggressively prefers integer maths over |
7dca457a |
374 | fp maths for integer values. |
375 | |
a00b5bd3 |
376 | How to detect overflow? |
7dca457a |
377 | |
378 | C 99 section 6.2.6.1 says |
379 | |
380 | The range of nonnegative values of a signed integer type is a subrange |
381 | of the corresponding unsigned integer type, and the representation of |
382 | the same value in each type is the same. A computation involving |
383 | unsigned operands can never overflow, because a result that cannot be |
384 | represented by the resulting unsigned integer type is reduced modulo |
385 | the number that is one greater than the largest value that can be |
386 | represented by the resulting type. |
387 | |
388 | (the 9th paragraph) |
389 | |
390 | which I read as "unsigned ints wrap." |
391 | |
392 | signed integer overflow seems to be classed as "exception condition" |
393 | |
394 | If an exceptional condition occurs during the evaluation of an |
395 | expression (that is, if the result is not mathematically defined or not |
396 | in the range of representable values for its type), the behavior is |
397 | undefined. |
398 | |
399 | (6.5, the 5th paragraph) |
400 | |
401 | I had assumed that on 2s complement machines signed arithmetic would |
402 | wrap, hence coded pp_add and pp_subtract on the assumption that |
403 | everything perl builds on would be happy. After much wailing and |
404 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, |
405 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- |
406 | unsigned code below is actually shorter than the old code. :-) |
407 | */ |
408 | |
28e5dec8 |
409 | SvIV_please(TOPs); |
410 | if (SvIOK(TOPs)) { |
411 | /* Unless the left argument is integer in range we are going to have to |
412 | use NV maths. Hence only attempt to coerce the right argument if |
413 | we know the left is integer. */ |
9c5ffd7c |
414 | register UV auv = 0; |
415 | bool auvok = FALSE; |
7dca457a |
416 | bool a_valid = 0; |
417 | |
28e5dec8 |
418 | if (!useleft) { |
7dca457a |
419 | auv = 0; |
420 | a_valid = auvok = 1; |
421 | /* left operand is undef, treat as zero. + 0 is identity, |
422 | Could SETi or SETu right now, but space optimise by not adding |
423 | lots of code to speed up what is probably a rarish case. */ |
424 | } else { |
425 | /* Left operand is defined, so is it IV? */ |
426 | SvIV_please(TOPm1s); |
427 | if (SvIOK(TOPm1s)) { |
428 | if ((auvok = SvUOK(TOPm1s))) |
429 | auv = SvUVX(TOPm1s); |
430 | else { |
431 | register IV aiv = SvIVX(TOPm1s); |
432 | if (aiv >= 0) { |
433 | auv = aiv; |
434 | auvok = 1; /* Now acting as a sign flag. */ |
435 | } else { /* 2s complement assumption for IV_MIN */ |
436 | auv = (UV)-aiv; |
437 | } |
438 | } |
439 | a_valid = 1; |
28e5dec8 |
440 | } |
441 | } |
7dca457a |
442 | if (a_valid) { |
443 | bool result_good = 0; |
444 | UV result; |
445 | register UV buv; |
28e5dec8 |
446 | bool buvok = SvUOK(TOPs); |
a00b5bd3 |
447 | |
7dca457a |
448 | if (buvok) |
449 | buv = SvUVX(TOPs); |
450 | else { |
451 | register IV biv = SvIVX(TOPs); |
452 | if (biv >= 0) { |
453 | buv = biv; |
454 | buvok = 1; |
455 | } else |
456 | buv = (UV)-biv; |
457 | } |
458 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, |
602f51c4 |
459 | else "IV" now, independent of how it came in. |
7dca457a |
460 | if a, b represents positive, A, B negative, a maps to -A etc |
461 | a + b => (a + b) |
462 | A + b => -(a - b) |
463 | a + B => (a - b) |
464 | A + B => -(a + b) |
465 | all UV maths. negate result if A negative. |
466 | add if signs same, subtract if signs differ. */ |
467 | |
468 | if (auvok ^ buvok) { |
469 | /* Signs differ. */ |
470 | if (auv >= buv) { |
471 | result = auv - buv; |
472 | /* Must get smaller */ |
473 | if (result <= auv) |
474 | result_good = 1; |
475 | } else { |
476 | result = buv - auv; |
477 | if (result <= buv) { |
478 | /* result really should be -(auv-buv). as its negation |
479 | of true value, need to swap our result flag */ |
480 | auvok = !auvok; |
481 | result_good = 1; |
28e5dec8 |
482 | } |
483 | } |
7dca457a |
484 | } else { |
485 | /* Signs same */ |
486 | result = auv + buv; |
487 | if (result >= auv) |
488 | result_good = 1; |
489 | } |
490 | if (result_good) { |
491 | SP--; |
492 | if (auvok) |
28e5dec8 |
493 | SETu( result ); |
7dca457a |
494 | else { |
495 | /* Negate result */ |
496 | if (result <= (UV)IV_MIN) |
497 | SETi( -(IV)result ); |
498 | else { |
499 | /* result valid, but out of range for IV. */ |
500 | SETn( -(NV)result ); |
28e5dec8 |
501 | } |
502 | } |
7dca457a |
503 | RETURN; |
504 | } /* Overflow, drop through to NVs. */ |
28e5dec8 |
505 | } |
506 | } |
507 | #endif |
a0d0e21e |
508 | { |
28e5dec8 |
509 | dPOPnv; |
510 | if (!useleft) { |
511 | /* left operand is undef, treat as zero. + 0.0 is identity. */ |
512 | SETn(value); |
513 | RETURN; |
514 | } |
515 | SETn( value + TOPn ); |
516 | RETURN; |
a0d0e21e |
517 | } |
518 | } |
519 | |
520 | PP(pp_aelemfast) |
521 | { |
39644a26 |
522 | dSP; |
1d7c1841 |
523 | AV *av = GvAV(cGVOP_gv); |
533c011a |
524 | U32 lval = PL_op->op_flags & OPf_MOD; |
525 | SV** svp = av_fetch(av, PL_op->op_private, lval); |
3280af22 |
526 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 |
527 | EXTEND(SP, 1); |
be6c24e0 |
528 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
529 | sv = sv_mortalcopy(sv); |
530 | PUSHs(sv); |
a0d0e21e |
531 | RETURN; |
532 | } |
533 | |
534 | PP(pp_join) |
535 | { |
39644a26 |
536 | dSP; dMARK; dTARGET; |
a0d0e21e |
537 | MARK++; |
538 | do_join(TARG, *MARK, MARK, SP); |
539 | SP = MARK; |
540 | SETs(TARG); |
541 | RETURN; |
542 | } |
543 | |
544 | PP(pp_pushre) |
545 | { |
39644a26 |
546 | dSP; |
44a8e56a |
547 | #ifdef DEBUGGING |
548 | /* |
549 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs |
550 | * will be enough to hold an OP*. |
551 | */ |
552 | SV* sv = sv_newmortal(); |
553 | sv_upgrade(sv, SVt_PVLV); |
554 | LvTYPE(sv) = '/'; |
533c011a |
555 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a |
556 | XPUSHs(sv); |
557 | #else |
6b88bc9c |
558 | XPUSHs((SV*)PL_op); |
44a8e56a |
559 | #endif |
a0d0e21e |
560 | RETURN; |
561 | } |
562 | |
563 | /* Oversized hot code. */ |
564 | |
565 | PP(pp_print) |
566 | { |
39644a26 |
567 | dSP; dMARK; dORIGMARK; |
a0d0e21e |
568 | GV *gv; |
569 | IO *io; |
760ac839 |
570 | register PerlIO *fp; |
236988e4 |
571 | MAGIC *mg; |
a0d0e21e |
572 | |
533c011a |
573 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
574 | gv = (GV*)*++MARK; |
575 | else |
3280af22 |
576 | gv = PL_defoutgv; |
5b468f54 |
577 | |
578 | if (gv && (io = GvIO(gv)) |
579 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) |
580 | { |
01bb7c6d |
581 | had_magic: |
68dc0745 |
582 | if (MARK == ORIGMARK) { |
1c846c1f |
583 | /* If using default handle then we need to make space to |
a60c0954 |
584 | * pass object as 1st arg, so move other args up ... |
585 | */ |
4352c267 |
586 | MEXTEND(SP, 1); |
68dc0745 |
587 | ++MARK; |
588 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); |
589 | ++SP; |
590 | } |
591 | PUSHMARK(MARK - 1); |
5b468f54 |
592 | *MARK = SvTIED_obj((SV*)io, mg); |
68dc0745 |
593 | PUTBACK; |
236988e4 |
594 | ENTER; |
864dbfa3 |
595 | call_method("PRINT", G_SCALAR); |
236988e4 |
596 | LEAVE; |
597 | SPAGAIN; |
68dc0745 |
598 | MARK = ORIGMARK + 1; |
599 | *MARK = *SP; |
600 | SP = MARK; |
236988e4 |
601 | RETURN; |
602 | } |
a0d0e21e |
603 | if (!(io = GvIO(gv))) { |
5b468f54 |
604 | if ((GvEGV(gv)) && (io = GvIO(GvEGV(gv))) |
605 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) |
01bb7c6d |
606 | goto had_magic; |
2dd78f96 |
607 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
608 | report_evil_fh(gv, io, PL_op->op_type); |
93189314 |
609 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e |
610 | goto just_say_no; |
611 | } |
612 | else if (!(fp = IoOFP(io))) { |
599cee73 |
613 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 |
614 | if (IoIFP(io)) |
615 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); |
2dd78f96 |
616 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f |
617 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e |
618 | } |
93189314 |
619 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e |
620 | goto just_say_no; |
621 | } |
622 | else { |
623 | MARK++; |
7889fe52 |
624 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e |
625 | while (MARK <= SP) { |
626 | if (!do_print(*MARK, fp)) |
627 | break; |
628 | MARK++; |
629 | if (MARK <= SP) { |
7889fe52 |
630 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e |
631 | MARK--; |
632 | break; |
633 | } |
634 | } |
635 | } |
636 | } |
637 | else { |
638 | while (MARK <= SP) { |
639 | if (!do_print(*MARK, fp)) |
640 | break; |
641 | MARK++; |
642 | } |
643 | } |
644 | if (MARK <= SP) |
645 | goto just_say_no; |
646 | else { |
7889fe52 |
647 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
648 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
a0d0e21e |
649 | goto just_say_no; |
650 | |
651 | if (IoFLAGS(io) & IOf_FLUSH) |
760ac839 |
652 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e |
653 | goto just_say_no; |
654 | } |
655 | } |
656 | SP = ORIGMARK; |
3280af22 |
657 | PUSHs(&PL_sv_yes); |
a0d0e21e |
658 | RETURN; |
659 | |
660 | just_say_no: |
661 | SP = ORIGMARK; |
3280af22 |
662 | PUSHs(&PL_sv_undef); |
a0d0e21e |
663 | RETURN; |
664 | } |
665 | |
666 | PP(pp_rv2av) |
667 | { |
39644a26 |
668 | dSP; dTOPss; |
a0d0e21e |
669 | AV *av; |
670 | |
671 | if (SvROK(sv)) { |
672 | wasref: |
f5284f61 |
673 | tryAMAGICunDEREF(to_av); |
674 | |
a0d0e21e |
675 | av = (AV*)SvRV(sv); |
676 | if (SvTYPE(av) != SVt_PVAV) |
cea2e8a9 |
677 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a |
678 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
679 | SETs((SV*)av); |
a0d0e21e |
680 | RETURN; |
681 | } |
78f9721b |
682 | else if (LVRET) { |
683 | if (GIMME == G_SCALAR) |
684 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); |
685 | SETs((SV*)av); |
686 | RETURN; |
687 | } |
82d03984 |
688 | else if (PL_op->op_flags & OPf_MOD |
689 | && PL_op->op_private & OPpLVAL_INTRO) |
690 | Perl_croak(aTHX_ PL_no_localize_ref); |
a0d0e21e |
691 | } |
692 | else { |
693 | if (SvTYPE(sv) == SVt_PVAV) { |
694 | av = (AV*)sv; |
533c011a |
695 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
696 | SETs((SV*)av); |
a0d0e21e |
697 | RETURN; |
698 | } |
78f9721b |
699 | else if (LVRET) { |
700 | if (GIMME == G_SCALAR) |
701 | Perl_croak(aTHX_ "Can't return array to lvalue" |
702 | " scalar context"); |
703 | SETs((SV*)av); |
704 | RETURN; |
705 | } |
a0d0e21e |
706 | } |
707 | else { |
67955e0c |
708 | GV *gv; |
1c846c1f |
709 | |
a0d0e21e |
710 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
711 | char *sym; |
c9d5ac95 |
712 | STRLEN len; |
748a9306 |
713 | |
a0d0e21e |
714 | if (SvGMAGICAL(sv)) { |
715 | mg_get(sv); |
716 | if (SvROK(sv)) |
717 | goto wasref; |
718 | } |
719 | if (!SvOK(sv)) { |
533c011a |
720 | if (PL_op->op_flags & OPf_REF || |
721 | PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
722 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 |
723 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 |
724 | report_uninit(); |
f5284f61 |
725 | if (GIMME == G_ARRAY) { |
c2444246 |
726 | (void)POPs; |
4633a7c4 |
727 | RETURN; |
f5284f61 |
728 | } |
729 | RETSETUNDEF; |
a0d0e21e |
730 | } |
c9d5ac95 |
731 | sym = SvPV(sv,len); |
35cd451c |
732 | if ((PL_op->op_flags & OPf_SPECIAL) && |
733 | !(PL_op->op_flags & OPf_MOD)) |
734 | { |
735 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV); |
c9d5ac95 |
736 | if (!gv |
737 | && (!is_gv_magical(sym,len,0) |
738 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV)))) |
739 | { |
35cd451c |
740 | RETSETUNDEF; |
c9d5ac95 |
741 | } |
35cd451c |
742 | } |
743 | else { |
744 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
745 | DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); |
35cd451c |
746 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
747 | } |
748 | } |
749 | else { |
67955e0c |
750 | gv = (GV*)sv; |
a0d0e21e |
751 | } |
67955e0c |
752 | av = GvAVn(gv); |
533c011a |
753 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c |
754 | av = save_ary(gv); |
533c011a |
755 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 |
756 | SETs((SV*)av); |
a0d0e21e |
757 | RETURN; |
758 | } |
78f9721b |
759 | else if (LVRET) { |
760 | if (GIMME == G_SCALAR) |
761 | Perl_croak(aTHX_ "Can't return array to lvalue" |
762 | " scalar context"); |
763 | SETs((SV*)av); |
764 | RETURN; |
765 | } |
a0d0e21e |
766 | } |
767 | } |
768 | |
769 | if (GIMME == G_ARRAY) { |
770 | I32 maxarg = AvFILL(av) + 1; |
c2444246 |
771 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f |
772 | EXTEND(SP, maxarg); |
93965878 |
773 | if (SvRMAGICAL(av)) { |
1c846c1f |
774 | U32 i; |
eb160463 |
775 | for (i=0; i < (U32)maxarg; i++) { |
93965878 |
776 | SV **svp = av_fetch(av, i, FALSE); |
3280af22 |
777 | SP[i+1] = (svp) ? *svp : &PL_sv_undef; |
93965878 |
778 | } |
1c846c1f |
779 | } |
93965878 |
780 | else { |
781 | Copy(AvARRAY(av), SP+1, maxarg, SV*); |
782 | } |
a0d0e21e |
783 | SP += maxarg; |
784 | } |
c754c3d7 |
785 | else if (GIMME_V == G_SCALAR) { |
a0d0e21e |
786 | dTARGET; |
787 | I32 maxarg = AvFILL(av) + 1; |
f5284f61 |
788 | SETi(maxarg); |
a0d0e21e |
789 | } |
790 | RETURN; |
791 | } |
792 | |
793 | PP(pp_rv2hv) |
794 | { |
39644a26 |
795 | dSP; dTOPss; |
a0d0e21e |
796 | HV *hv; |
797 | |
798 | if (SvROK(sv)) { |
799 | wasref: |
f5284f61 |
800 | tryAMAGICunDEREF(to_hv); |
801 | |
a0d0e21e |
802 | hv = (HV*)SvRV(sv); |
6d822dc4 |
803 | if (SvTYPE(hv) != SVt_PVHV) |
cea2e8a9 |
804 | DIE(aTHX_ "Not a HASH reference"); |
533c011a |
805 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
806 | SETs((SV*)hv); |
807 | RETURN; |
808 | } |
78f9721b |
809 | else if (LVRET) { |
810 | if (GIMME == G_SCALAR) |
811 | Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); |
812 | SETs((SV*)hv); |
813 | RETURN; |
814 | } |
82d03984 |
815 | else if (PL_op->op_flags & OPf_MOD |
816 | && PL_op->op_private & OPpLVAL_INTRO) |
817 | Perl_croak(aTHX_ PL_no_localize_ref); |
a0d0e21e |
818 | } |
819 | else { |
6d822dc4 |
820 | if (SvTYPE(sv) == SVt_PVHV) { |
a0d0e21e |
821 | hv = (HV*)sv; |
533c011a |
822 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
823 | SETs((SV*)hv); |
824 | RETURN; |
825 | } |
78f9721b |
826 | else if (LVRET) { |
827 | if (GIMME == G_SCALAR) |
828 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
829 | " scalar context"); |
830 | SETs((SV*)hv); |
831 | RETURN; |
832 | } |
a0d0e21e |
833 | } |
834 | else { |
67955e0c |
835 | GV *gv; |
1c846c1f |
836 | |
a0d0e21e |
837 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 |
838 | char *sym; |
c9d5ac95 |
839 | STRLEN len; |
748a9306 |
840 | |
a0d0e21e |
841 | if (SvGMAGICAL(sv)) { |
842 | mg_get(sv); |
843 | if (SvROK(sv)) |
844 | goto wasref; |
845 | } |
846 | if (!SvOK(sv)) { |
533c011a |
847 | if (PL_op->op_flags & OPf_REF || |
848 | PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
849 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 |
850 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 |
851 | report_uninit(); |
4633a7c4 |
852 | if (GIMME == G_ARRAY) { |
853 | SP--; |
854 | RETURN; |
855 | } |
a0d0e21e |
856 | RETSETUNDEF; |
857 | } |
c9d5ac95 |
858 | sym = SvPV(sv,len); |
35cd451c |
859 | if ((PL_op->op_flags & OPf_SPECIAL) && |
860 | !(PL_op->op_flags & OPf_MOD)) |
861 | { |
862 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV); |
c9d5ac95 |
863 | if (!gv |
864 | && (!is_gv_magical(sym,len,0) |
865 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV)))) |
866 | { |
35cd451c |
867 | RETSETUNDEF; |
c9d5ac95 |
868 | } |
35cd451c |
869 | } |
870 | else { |
871 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
872 | DIE(aTHX_ PL_no_symref, sym, "a HASH"); |
35cd451c |
873 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
874 | } |
875 | } |
876 | else { |
67955e0c |
877 | gv = (GV*)sv; |
a0d0e21e |
878 | } |
67955e0c |
879 | hv = GvHVn(gv); |
533c011a |
880 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c |
881 | hv = save_hash(gv); |
533c011a |
882 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e |
883 | SETs((SV*)hv); |
884 | RETURN; |
885 | } |
78f9721b |
886 | else if (LVRET) { |
887 | if (GIMME == G_SCALAR) |
888 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
889 | " scalar context"); |
890 | SETs((SV*)hv); |
891 | RETURN; |
892 | } |
a0d0e21e |
893 | } |
894 | } |
895 | |
896 | if (GIMME == G_ARRAY) { /* array wanted */ |
3280af22 |
897 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 |
898 | return do_kv(); |
a0d0e21e |
899 | } |
900 | else { |
901 | dTARGET; |
b9c39e73 |
902 | if (HvFILL(hv)) |
57def98f |
903 | Perl_sv_setpvf(aTHX_ TARG, "%"IVdf"/%"IVdf, |
904 | (IV)HvFILL(hv), (IV)HvMAX(hv) + 1); |
a0d0e21e |
905 | else |
906 | sv_setiv(TARG, 0); |
c750a3ec |
907 | |
a0d0e21e |
908 | SETTARG; |
909 | RETURN; |
910 | } |
911 | } |
912 | |
10c8fecd |
913 | STATIC void |
914 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) |
915 | { |
916 | if (*relem) { |
917 | SV *tmpstr; |
6d822dc4 |
918 | HE *didstore; |
919 | |
920 | if (ckWARN(WARN_MISC)) { |
10c8fecd |
921 | if (relem == firstrelem && |
922 | SvROK(*relem) && |
923 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || |
924 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) |
925 | { |
9014280d |
926 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd |
927 | "Reference found where even-sized list expected"); |
928 | } |
929 | else |
9014280d |
930 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd |
931 | "Odd number of elements in hash assignment"); |
932 | } |
6d822dc4 |
933 | |
934 | tmpstr = NEWSV(29,0); |
935 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
936 | if (SvMAGICAL(hash)) { |
937 | if (SvSMAGICAL(tmpstr)) |
938 | mg_set(tmpstr); |
939 | if (!didstore) |
940 | sv_2mortal(tmpstr); |
941 | } |
942 | TAINT_NOT; |
10c8fecd |
943 | } |
944 | } |
945 | |
a0d0e21e |
946 | PP(pp_aassign) |
947 | { |
39644a26 |
948 | dSP; |
3280af22 |
949 | SV **lastlelem = PL_stack_sp; |
950 | SV **lastrelem = PL_stack_base + POPMARK; |
951 | SV **firstrelem = PL_stack_base + POPMARK + 1; |
a0d0e21e |
952 | SV **firstlelem = lastrelem + 1; |
953 | |
954 | register SV **relem; |
955 | register SV **lelem; |
956 | |
957 | register SV *sv; |
958 | register AV *ary; |
959 | |
54310121 |
960 | I32 gimme; |
a0d0e21e |
961 | HV *hash; |
962 | I32 i; |
963 | int magic; |
964 | |
3280af22 |
965 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
a0d0e21e |
966 | |
967 | /* If there's a common identifier on both sides we have to take |
968 | * special care that assigning the identifier on the left doesn't |
969 | * clobber a value on the right that's used later in the list. |
970 | */ |
10c8fecd |
971 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 |
972 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd |
973 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
974 | /*SUPPRESS 560*/ |
155aba94 |
975 | if ((sv = *relem)) { |
a1f49e72 |
976 | TAINT_NOT; /* Each item is independent */ |
10c8fecd |
977 | *relem = sv_mortalcopy(sv); |
a1f49e72 |
978 | } |
10c8fecd |
979 | } |
a0d0e21e |
980 | } |
981 | |
982 | relem = firstrelem; |
983 | lelem = firstlelem; |
984 | ary = Null(AV*); |
985 | hash = Null(HV*); |
10c8fecd |
986 | |
a0d0e21e |
987 | while (lelem <= lastlelem) { |
bbce6d69 |
988 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e |
989 | sv = *lelem++; |
990 | switch (SvTYPE(sv)) { |
991 | case SVt_PVAV: |
992 | ary = (AV*)sv; |
748a9306 |
993 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e |
994 | av_clear(ary); |
7e42bd57 |
995 | av_extend(ary, lastrelem - relem); |
a0d0e21e |
996 | i = 0; |
997 | while (relem <= lastrelem) { /* gobble up all the rest */ |
5117ca91 |
998 | SV **didstore; |
a0d0e21e |
999 | sv = NEWSV(28,0); |
1000 | assert(*relem); |
1001 | sv_setsv(sv,*relem); |
1002 | *(relem++) = sv; |
5117ca91 |
1003 | didstore = av_store(ary,i++,sv); |
1004 | if (magic) { |
fb73857a |
1005 | if (SvSMAGICAL(sv)) |
1006 | mg_set(sv); |
5117ca91 |
1007 | if (!didstore) |
8127e0e3 |
1008 | sv_2mortal(sv); |
5117ca91 |
1009 | } |
bbce6d69 |
1010 | TAINT_NOT; |
a0d0e21e |
1011 | } |
1012 | break; |
10c8fecd |
1013 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e |
1014 | SV *tmpstr; |
1015 | |
1016 | hash = (HV*)sv; |
748a9306 |
1017 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e |
1018 | hv_clear(hash); |
1019 | |
1020 | while (relem < lastrelem) { /* gobble up all the rest */ |
5117ca91 |
1021 | HE *didstore; |
4633a7c4 |
1022 | if (*relem) |
a0d0e21e |
1023 | sv = *(relem++); |
4633a7c4 |
1024 | else |
3280af22 |
1025 | sv = &PL_sv_no, relem++; |
a0d0e21e |
1026 | tmpstr = NEWSV(29,0); |
1027 | if (*relem) |
1028 | sv_setsv(tmpstr,*relem); /* value */ |
1029 | *(relem++) = tmpstr; |
5117ca91 |
1030 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1031 | if (magic) { |
fb73857a |
1032 | if (SvSMAGICAL(tmpstr)) |
1033 | mg_set(tmpstr); |
5117ca91 |
1034 | if (!didstore) |
8127e0e3 |
1035 | sv_2mortal(tmpstr); |
5117ca91 |
1036 | } |
bbce6d69 |
1037 | TAINT_NOT; |
8e07c86e |
1038 | } |
6a0deba8 |
1039 | if (relem == lastrelem) { |
10c8fecd |
1040 | do_oddball(hash, relem, firstrelem); |
6a0deba8 |
1041 | relem++; |
1930e939 |
1042 | } |
a0d0e21e |
1043 | } |
1044 | break; |
1045 | default: |
6fc92669 |
1046 | if (SvIMMORTAL(sv)) { |
1047 | if (relem <= lastrelem) |
1048 | relem++; |
1049 | break; |
a0d0e21e |
1050 | } |
1051 | if (relem <= lastrelem) { |
1052 | sv_setsv(sv, *relem); |
1053 | *(relem++) = sv; |
1054 | } |
1055 | else |
3280af22 |
1056 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e |
1057 | SvSETMAGIC(sv); |
1058 | break; |
1059 | } |
1060 | } |
3280af22 |
1061 | if (PL_delaymagic & ~DM_DELAY) { |
1062 | if (PL_delaymagic & DM_UID) { |
a0d0e21e |
1063 | #ifdef HAS_SETRESUID |
b28d0864 |
1064 | (void)setresuid(PL_uid,PL_euid,(Uid_t)-1); |
56febc5e |
1065 | #else |
1066 | # ifdef HAS_SETREUID |
3280af22 |
1067 | (void)setreuid(PL_uid,PL_euid); |
56febc5e |
1068 | # else |
1069 | # ifdef HAS_SETRUID |
b28d0864 |
1070 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1071 | (void)setruid(PL_uid); |
1072 | PL_delaymagic &= ~DM_RUID; |
a0d0e21e |
1073 | } |
56febc5e |
1074 | # endif /* HAS_SETRUID */ |
1075 | # ifdef HAS_SETEUID |
b28d0864 |
1076 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
1077 | (void)seteuid(PL_uid); |
1078 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e |
1079 | } |
56febc5e |
1080 | # endif /* HAS_SETEUID */ |
b28d0864 |
1081 | if (PL_delaymagic & DM_UID) { |
1082 | if (PL_uid != PL_euid) |
cea2e8a9 |
1083 | DIE(aTHX_ "No setreuid available"); |
b28d0864 |
1084 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e |
1085 | } |
56febc5e |
1086 | # endif /* HAS_SETREUID */ |
1087 | #endif /* HAS_SETRESUID */ |
d8eceb89 |
1088 | PL_uid = PerlProc_getuid(); |
1089 | PL_euid = PerlProc_geteuid(); |
a0d0e21e |
1090 | } |
3280af22 |
1091 | if (PL_delaymagic & DM_GID) { |
a0d0e21e |
1092 | #ifdef HAS_SETRESGID |
b28d0864 |
1093 | (void)setresgid(PL_gid,PL_egid,(Gid_t)-1); |
56febc5e |
1094 | #else |
1095 | # ifdef HAS_SETREGID |
3280af22 |
1096 | (void)setregid(PL_gid,PL_egid); |
56febc5e |
1097 | # else |
1098 | # ifdef HAS_SETRGID |
b28d0864 |
1099 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1100 | (void)setrgid(PL_gid); |
1101 | PL_delaymagic &= ~DM_RGID; |
a0d0e21e |
1102 | } |
56febc5e |
1103 | # endif /* HAS_SETRGID */ |
1104 | # ifdef HAS_SETEGID |
b28d0864 |
1105 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
1106 | (void)setegid(PL_gid); |
1107 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e |
1108 | } |
56febc5e |
1109 | # endif /* HAS_SETEGID */ |
b28d0864 |
1110 | if (PL_delaymagic & DM_GID) { |
1111 | if (PL_gid != PL_egid) |
cea2e8a9 |
1112 | DIE(aTHX_ "No setregid available"); |
b28d0864 |
1113 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e |
1114 | } |
56febc5e |
1115 | # endif /* HAS_SETREGID */ |
1116 | #endif /* HAS_SETRESGID */ |
d8eceb89 |
1117 | PL_gid = PerlProc_getgid(); |
1118 | PL_egid = PerlProc_getegid(); |
a0d0e21e |
1119 | } |
3280af22 |
1120 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e |
1121 | } |
3280af22 |
1122 | PL_delaymagic = 0; |
54310121 |
1123 | |
1124 | gimme = GIMME_V; |
1125 | if (gimme == G_VOID) |
1126 | SP = firstrelem - 1; |
1127 | else if (gimme == G_SCALAR) { |
1128 | dTARGET; |
1129 | SP = firstrelem; |
1130 | SETi(lastrelem - firstrelem + 1); |
1131 | } |
1132 | else { |
a0d0e21e |
1133 | if (ary || hash) |
1134 | SP = lastrelem; |
1135 | else |
1136 | SP = firstrelem + (lastlelem - firstlelem); |
0c8c7a05 |
1137 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc |
1138 | while (relem <= SP) |
3280af22 |
1139 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e |
1140 | } |
54310121 |
1141 | RETURN; |
a0d0e21e |
1142 | } |
1143 | |
8782bef2 |
1144 | PP(pp_qr) |
1145 | { |
39644a26 |
1146 | dSP; |
8782bef2 |
1147 | register PMOP *pm = cPMOP; |
1148 | SV *rv = sv_newmortal(); |
57668c4d |
1149 | SV *sv = newSVrv(rv, "Regexp"); |
e08e52cf |
1150 | if (pm->op_pmdynflags & PMdf_TAINTED) |
1151 | SvTAINTED_on(rv); |
aaa362c4 |
1152 | sv_magic(sv,(SV*)ReREFCNT_inc(PM_GETRE(pm)), PERL_MAGIC_qr,0,0); |
8782bef2 |
1153 | RETURNX(PUSHs(rv)); |
1154 | } |
1155 | |
a0d0e21e |
1156 | PP(pp_match) |
1157 | { |
39644a26 |
1158 | dSP; dTARG; |
a0d0e21e |
1159 | register PMOP *pm = cPMOP; |
d65afb4b |
1160 | PMOP *dynpm = pm; |
a0d0e21e |
1161 | register char *t; |
1162 | register char *s; |
1163 | char *strend; |
1164 | I32 global; |
f722798b |
1165 | I32 r_flags = REXEC_CHECKED; |
1166 | char *truebase; /* Start of string */ |
aaa362c4 |
1167 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b |
1168 | bool rxtainted; |
a0d0e21e |
1169 | I32 gimme = GIMME; |
1170 | STRLEN len; |
748a9306 |
1171 | I32 minmatch = 0; |
3280af22 |
1172 | I32 oldsave = PL_savestack_ix; |
f86702cc |
1173 | I32 update_minmatch = 1; |
e60df1fa |
1174 | I32 had_zerolen = 0; |
a0d0e21e |
1175 | |
533c011a |
1176 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
1177 | TARG = POPs; |
1178 | else { |
54b9620d |
1179 | TARG = DEFSV; |
a0d0e21e |
1180 | EXTEND(SP,1); |
1181 | } |
d9f424b2 |
1182 | |
c277df42 |
1183 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e |
1184 | s = SvPV(TARG, len); |
1185 | strend = s + len; |
1186 | if (!s) |
2269b42e |
1187 | DIE(aTHX_ "panic: pp_match"); |
b3eb6a9b |
1188 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 |
1189 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba |
1190 | TAINT_NOT; |
a0d0e21e |
1191 | |
a30b2f1f |
1192 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 |
1193 | |
d65afb4b |
1194 | /* PMdf_USED is set after a ?? matches once */ |
48c036b1 |
1195 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 |
1196 | failure: |
a0d0e21e |
1197 | if (gimme == G_ARRAY) |
1198 | RETURN; |
1199 | RETPUSHNO; |
1200 | } |
1201 | |
d65afb4b |
1202 | /* empty pattern special-cased to use last successful pattern if possible */ |
3280af22 |
1203 | if (!rx->prelen && PL_curpm) { |
1204 | pm = PL_curpm; |
aaa362c4 |
1205 | rx = PM_GETRE(pm); |
a0d0e21e |
1206 | } |
d65afb4b |
1207 | |
eb160463 |
1208 | if (rx->minlen > (I32)len) |
d65afb4b |
1209 | goto failure; |
c277df42 |
1210 | |
a0d0e21e |
1211 | truebase = t = s; |
ad94a511 |
1212 | |
1213 | /* XXXX What part of this is needed with true \G-support? */ |
d65afb4b |
1214 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
cf93c79d |
1215 | rx->startp[0] = -1; |
a0d0e21e |
1216 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 |
1217 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 |
1218 | if (mg && mg->mg_len >= 0) { |
b7a35066 |
1219 | if (!(rx->reganch & ROPT_GPOS_SEEN)) |
1c846c1f |
1220 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e |
1221 | else if (rx->reganch & ROPT_ANCH_GPOS) { |
1222 | r_flags |= REXEC_IGNOREPOS; |
1c846c1f |
1223 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e |
1224 | } |
748a9306 |
1225 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc |
1226 | update_minmatch = 0; |
748a9306 |
1227 | } |
a0d0e21e |
1228 | } |
1229 | } |
14977893 |
1230 | if ((!global && rx->nparens) |
1231 | || SvTEMP(TARG) || PL_sawampersand) |
1232 | r_flags |= REXEC_COPY_STR; |
1c846c1f |
1233 | if (SvSCREAM(TARG)) |
22e551b9 |
1234 | r_flags |= REXEC_SCREAM; |
1235 | |
a0d0e21e |
1236 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 |
1237 | SAVEINT(PL_multiline); |
1238 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; |
a0d0e21e |
1239 | } |
1240 | |
1241 | play_it_again: |
cf93c79d |
1242 | if (global && rx->startp[0] != -1) { |
1243 | t = s = rx->endp[0] + truebase; |
d9f97599 |
1244 | if ((s + rx->minlen) > strend) |
a0d0e21e |
1245 | goto nope; |
f86702cc |
1246 | if (update_minmatch++) |
e60df1fa |
1247 | minmatch = had_zerolen; |
a0d0e21e |
1248 | } |
60aeb6fd |
1249 | if (rx->reganch & RE_USE_INTUIT && |
1250 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { |
ee0b7718 |
1251 | PL_bostr = truebase; |
f722798b |
1252 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1253 | |
1254 | if (!s) |
1255 | goto nope; |
1256 | if ( (rx->reganch & ROPT_CHECK_ALL) |
14977893 |
1257 | && !PL_sawampersand |
f722798b |
1258 | && ((rx->reganch & ROPT_NOSCAN) |
1259 | || !((rx->reganch & RE_INTUIT_TAIL) |
05b4157f |
1260 | && (r_flags & REXEC_SCREAM))) |
1261 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ |
f722798b |
1262 | goto yup; |
a0d0e21e |
1263 | } |
cea2e8a9 |
1264 | if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 |
1265 | { |
3280af22 |
1266 | PL_curpm = pm; |
d65afb4b |
1267 | if (dynpm->op_pmflags & PMf_ONCE) |
1268 | dynpm->op_pmdynflags |= PMdf_USED; |
a0d0e21e |
1269 | goto gotcha; |
1270 | } |
1271 | else |
1272 | goto ret_no; |
1273 | /*NOTREACHED*/ |
1274 | |
1275 | gotcha: |
72311751 |
1276 | if (rxtainted) |
1277 | RX_MATCH_TAINTED_on(rx); |
1278 | TAINT_IF(RX_MATCH_TAINTED(rx)); |
a0d0e21e |
1279 | if (gimme == G_ARRAY) { |
ffc61ed2 |
1280 | I32 nparens, i, len; |
a0d0e21e |
1281 | |
ffc61ed2 |
1282 | nparens = rx->nparens; |
1283 | if (global && !nparens) |
a0d0e21e |
1284 | i = 1; |
1285 | else |
1286 | i = 0; |
c277df42 |
1287 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 |
1288 | EXTEND(SP, nparens + i); |
1289 | EXTEND_MORTAL(nparens + i); |
1290 | for (i = !i; i <= nparens; i++) { |
a0d0e21e |
1291 | PUSHs(sv_newmortal()); |
1292 | /*SUPPRESS 560*/ |
cf93c79d |
1293 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
1294 | len = rx->endp[i] - rx->startp[i]; |
290deeac |
1295 | if (rx->endp[i] < 0 || rx->startp[i] < 0 || |
1296 | len < 0 || len > strend - s) |
1297 | DIE(aTHX_ "panic: pp_match start/end pointers"); |
cf93c79d |
1298 | s = rx->startp[i] + truebase; |
a0d0e21e |
1299 | sv_setpvn(*SP, s, len); |
cce850e4 |
1300 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd |
1301 | SvUTF8_on(*SP); |
a0d0e21e |
1302 | } |
1303 | } |
1304 | if (global) { |
d65afb4b |
1305 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
0af80b60 |
1306 | MAGIC* mg = 0; |
1307 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
1308 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
1309 | if (!mg) { |
1310 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1311 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
1312 | } |
1313 | if (rx->startp[0] != -1) { |
1314 | mg->mg_len = rx->endp[0]; |
1315 | if (rx->startp[0] == rx->endp[0]) |
1316 | mg->mg_flags |= MGf_MINMATCH; |
1317 | else |
1318 | mg->mg_flags &= ~MGf_MINMATCH; |
1319 | } |
1320 | } |
cf93c79d |
1321 | had_zerolen = (rx->startp[0] != -1 |
1322 | && rx->startp[0] == rx->endp[0]); |
c277df42 |
1323 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d |
1324 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e |
1325 | goto play_it_again; |
1326 | } |
ffc61ed2 |
1327 | else if (!nparens) |
bde848c5 |
1328 | XPUSHs(&PL_sv_yes); |
4633a7c4 |
1329 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1330 | RETURN; |
1331 | } |
1332 | else { |
1333 | if (global) { |
1334 | MAGIC* mg = 0; |
1335 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
14befaf4 |
1336 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e |
1337 | if (!mg) { |
14befaf4 |
1338 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1339 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e |
1340 | } |
cf93c79d |
1341 | if (rx->startp[0] != -1) { |
1342 | mg->mg_len = rx->endp[0]; |
d9f97599 |
1343 | if (rx->startp[0] == rx->endp[0]) |
748a9306 |
1344 | mg->mg_flags |= MGf_MINMATCH; |
1345 | else |
1346 | mg->mg_flags &= ~MGf_MINMATCH; |
1347 | } |
a0d0e21e |
1348 | } |
4633a7c4 |
1349 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1350 | RETPUSHYES; |
1351 | } |
1352 | |
f722798b |
1353 | yup: /* Confirmed by INTUIT */ |
72311751 |
1354 | if (rxtainted) |
1355 | RX_MATCH_TAINTED_on(rx); |
1356 | TAINT_IF(RX_MATCH_TAINTED(rx)); |
3280af22 |
1357 | PL_curpm = pm; |
d65afb4b |
1358 | if (dynpm->op_pmflags & PMf_ONCE) |
1359 | dynpm->op_pmdynflags |= PMdf_USED; |
cf93c79d |
1360 | if (RX_MATCH_COPIED(rx)) |
1361 | Safefree(rx->subbeg); |
1362 | RX_MATCH_COPIED_off(rx); |
1363 | rx->subbeg = Nullch; |
a0d0e21e |
1364 | if (global) { |
d9f97599 |
1365 | rx->subbeg = truebase; |
cf93c79d |
1366 | rx->startp[0] = s - truebase; |
a30b2f1f |
1367 | if (RX_MATCH_UTF8(rx)) { |
60aeb6fd |
1368 | char *t = (char*)utf8_hop((U8*)s, rx->minlen); |
1369 | rx->endp[0] = t - truebase; |
1370 | } |
1371 | else { |
1372 | rx->endp[0] = s - truebase + rx->minlen; |
1373 | } |
cf93c79d |
1374 | rx->sublen = strend - truebase; |
a0d0e21e |
1375 | goto gotcha; |
1c846c1f |
1376 | } |
14977893 |
1377 | if (PL_sawampersand) { |
1378 | I32 off; |
ed252734 |
1379 | #ifdef PERL_COPY_ON_WRITE |
1380 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
1381 | if (DEBUG_C_TEST) { |
1382 | PerlIO_printf(Perl_debug_log, |
1383 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", |
1384 | (int) SvTYPE(TARG), truebase, t, |
1385 | (int)(t-truebase)); |
1386 | } |
1387 | rx->saved_copy = sv_setsv_cow(rx->saved_copy, TARG); |
1388 | rx->subbeg = SvPVX(rx->saved_copy) + (t - truebase); |
1389 | assert (SvPOKp(rx->saved_copy)); |
1390 | } else |
1391 | #endif |
1392 | { |
14977893 |
1393 | |
ed252734 |
1394 | rx->subbeg = savepvn(t, strend - t); |
1395 | #ifdef PERL_COPY_ON_WRITE |
1396 | rx->saved_copy = Nullsv; |
1397 | #endif |
1398 | } |
14977893 |
1399 | rx->sublen = strend - t; |
1400 | RX_MATCH_COPIED_on(rx); |
1401 | off = rx->startp[0] = s - t; |
1402 | rx->endp[0] = off + rx->minlen; |
1403 | } |
1404 | else { /* startp/endp are used by @- @+. */ |
1405 | rx->startp[0] = s - truebase; |
1406 | rx->endp[0] = s - truebase + rx->minlen; |
1407 | } |
fc19f8d0 |
1408 | rx->nparens = rx->lastparen = 0; /* used by @- and @+ */ |
4633a7c4 |
1409 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1410 | RETPUSHYES; |
1411 | |
1412 | nope: |
a0d0e21e |
1413 | ret_no: |
d65afb4b |
1414 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e |
1415 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 |
1416 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e |
1417 | if (mg) |
565764a8 |
1418 | mg->mg_len = -1; |
a0d0e21e |
1419 | } |
1420 | } |
4633a7c4 |
1421 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
1422 | if (gimme == G_ARRAY) |
1423 | RETURN; |
1424 | RETPUSHNO; |
1425 | } |
1426 | |
1427 | OP * |
864dbfa3 |
1428 | Perl_do_readline(pTHX) |
a0d0e21e |
1429 | { |
1430 | dSP; dTARGETSTACKED; |
1431 | register SV *sv; |
1432 | STRLEN tmplen = 0; |
1433 | STRLEN offset; |
760ac839 |
1434 | PerlIO *fp; |
3280af22 |
1435 | register IO *io = GvIO(PL_last_in_gv); |
533c011a |
1436 | register I32 type = PL_op->op_type; |
54310121 |
1437 | I32 gimme = GIMME_V; |
e79b0511 |
1438 | MAGIC *mg; |
a0d0e21e |
1439 | |
5b468f54 |
1440 | if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { |
e79b0511 |
1441 | PUSHMARK(SP); |
5b468f54 |
1442 | XPUSHs(SvTIED_obj((SV*)io, mg)); |
e79b0511 |
1443 | PUTBACK; |
1444 | ENTER; |
864dbfa3 |
1445 | call_method("READLINE", gimme); |
e79b0511 |
1446 | LEAVE; |
1447 | SPAGAIN; |
0b7c7b4f |
1448 | if (gimme == G_SCALAR) { |
1449 | SV* result = POPs; |
1450 | SvSetSV_nosteal(TARG, result); |
1451 | PUSHTARG; |
1452 | } |
e79b0511 |
1453 | RETURN; |
1454 | } |
a0d0e21e |
1455 | fp = Nullfp; |
1456 | if (io) { |
1457 | fp = IoIFP(io); |
1458 | if (!fp) { |
1459 | if (IoFLAGS(io) & IOf_ARGV) { |
1460 | if (IoFLAGS(io) & IOf_START) { |
a0d0e21e |
1461 | IoLINES(io) = 0; |
3280af22 |
1462 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 |
1463 | IoFLAGS(io) &= ~IOf_START; |
9d116dd7 |
1464 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 |
1465 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1466 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d |
1467 | fp = IoIFP(io); |
1468 | goto have_fp; |
a0d0e21e |
1469 | } |
1470 | } |
3280af22 |
1471 | fp = nextargv(PL_last_in_gv); |
a0d0e21e |
1472 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 |
1473 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e |
1474 | } |
1475 | } |
0d44d22b |
1476 | else if (type == OP_GLOB) |
1477 | fp = Perl_start_glob(aTHX_ POPs, io); |
a0d0e21e |
1478 | } |
1479 | else if (type == OP_GLOB) |
1480 | SP--; |
a00b5bd3 |
1481 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 |
1482 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 |
1483 | } |
a0d0e21e |
1484 | } |
1485 | if (!fp) { |
790090df |
1486 | if (ckWARN2(WARN_GLOB, WARN_CLOSED) |
1487 | && (!io || !(IoFLAGS(io) & IOf_START))) { |
3f4520fe |
1488 | if (type == OP_GLOB) |
9014280d |
1489 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a |
1490 | "glob failed (can't start child: %s)", |
1491 | Strerror(errno)); |
69282e91 |
1492 | else |
bc37a18f |
1493 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe |
1494 | } |
54310121 |
1495 | if (gimme == G_SCALAR) { |
79628082 |
1496 | /* undef TARG, and push that undefined value */ |
1497 | SV_CHECK_THINKFIRST_COW_DROP(TARG); |
a0d0e21e |
1498 | (void)SvOK_off(TARG); |
1499 | PUSHTARG; |
1500 | } |
1501 | RETURN; |
1502 | } |
a2008d6d |
1503 | have_fp: |
54310121 |
1504 | if (gimme == G_SCALAR) { |
a0d0e21e |
1505 | sv = TARG; |
9607fc9c |
1506 | if (SvROK(sv)) |
1507 | sv_unref(sv); |
a0d0e21e |
1508 | (void)SvUPGRADE(sv, SVt_PV); |
1509 | tmplen = SvLEN(sv); /* remember if already alloced */ |
1510 | if (!tmplen) |
1511 | Sv_Grow(sv, 80); /* try short-buffering it */ |
2b5e58c4 |
1512 | offset = 0; |
1513 | if (type == OP_RCATLINE && SvOK(sv)) { |
1514 | if (!SvPOK(sv)) { |
1515 | STRLEN n_a; |
1516 | (void)SvPV_force(sv, n_a); |
1517 | } |
a0d0e21e |
1518 | offset = SvCUR(sv); |
2b5e58c4 |
1519 | } |
a0d0e21e |
1520 | } |
54310121 |
1521 | else { |
1522 | sv = sv_2mortal(NEWSV(57, 80)); |
1523 | offset = 0; |
1524 | } |
fbad3eb5 |
1525 | |
3887d568 |
1526 | /* This should not be marked tainted if the fp is marked clean */ |
1527 | #define MAYBE_TAINT_LINE(io, sv) \ |
1528 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ |
1529 | TAINT; \ |
1530 | SvTAINTED_on(sv); \ |
1531 | } |
1532 | |
684bef36 |
1533 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 |
1534 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 |
1535 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba |
1536 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 |
1537 | |
a0d0e21e |
1538 | for (;;) { |
09e8efcc |
1539 | PUTBACK; |
fbad3eb5 |
1540 | if (!sv_gets(sv, fp, offset) |
1541 | && (type == OP_GLOB || SNARF_EOF(gimme, PL_rs, io, sv))) |
1542 | { |
760ac839 |
1543 | PerlIO_clearerr(fp); |
a0d0e21e |
1544 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 |
1545 | fp = nextargv(PL_last_in_gv); |
a0d0e21e |
1546 | if (fp) |
1547 | continue; |
3280af22 |
1548 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e |
1549 | } |
1550 | else if (type == OP_GLOB) { |
e476b1b5 |
1551 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
9014280d |
1552 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
4eb79ab5 |
1553 | "glob failed (child exited with status %d%s)", |
894356b3 |
1554 | (int)(STATUS_CURRENT >> 8), |
cf494569 |
1555 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 |
1556 | } |
a0d0e21e |
1557 | } |
54310121 |
1558 | if (gimme == G_SCALAR) { |
79628082 |
1559 | SV_CHECK_THINKFIRST_COW_DROP(TARG); |
a0d0e21e |
1560 | (void)SvOK_off(TARG); |
09e8efcc |
1561 | SPAGAIN; |
a0d0e21e |
1562 | PUSHTARG; |
1563 | } |
3887d568 |
1564 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e |
1565 | RETURN; |
1566 | } |
3887d568 |
1567 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e |
1568 | IoLINES(io)++; |
b9fee9ba |
1569 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc |
1570 | SvSETMAGIC(sv); |
09e8efcc |
1571 | SPAGAIN; |
a0d0e21e |
1572 | XPUSHs(sv); |
a0d0e21e |
1573 | if (type == OP_GLOB) { |
1574 | char *tmps; |
1575 | |
3280af22 |
1576 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd |
1577 | tmps = SvEND(sv) - 1; |
3280af22 |
1578 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd |
1579 | *tmps = '\0'; |
1580 | SvCUR(sv)--; |
1581 | } |
1582 | } |
a0d0e21e |
1583 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1584 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && |
1585 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) |
1586 | break; |
43384a1a |
1587 | if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e |
1588 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1589 | continue; |
1590 | } |
1591 | } |
54310121 |
1592 | if (gimme == G_ARRAY) { |
a0d0e21e |
1593 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1594 | SvLEN_set(sv, SvCUR(sv)+1); |
1595 | Renew(SvPVX(sv), SvLEN(sv), char); |
1596 | } |
1597 | sv = sv_2mortal(NEWSV(58, 80)); |
1598 | continue; |
1599 | } |
54310121 |
1600 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e |
1601 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1602 | if (SvCUR(sv) < 60) |
1603 | SvLEN_set(sv, 80); |
1604 | else |
1605 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ |
1606 | Renew(SvPVX(sv), SvLEN(sv), char); |
1607 | } |
1608 | RETURN; |
1609 | } |
1610 | } |
1611 | |
1612 | PP(pp_enter) |
1613 | { |
39644a26 |
1614 | dSP; |
c09156bb |
1615 | register PERL_CONTEXT *cx; |
533c011a |
1616 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e |
1617 | |
54310121 |
1618 | if (gimme == -1) { |
1619 | if (cxstack_ix >= 0) |
1620 | gimme = cxstack[cxstack_ix].blk_gimme; |
1621 | else |
1622 | gimme = G_SCALAR; |
1623 | } |
a0d0e21e |
1624 | |
1625 | ENTER; |
1626 | |
1627 | SAVETMPS; |
924508f0 |
1628 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e |
1629 | |
1630 | RETURN; |
1631 | } |
1632 | |
1633 | PP(pp_helem) |
1634 | { |
39644a26 |
1635 | dSP; |
760ac839 |
1636 | HE* he; |
ae77835f |
1637 | SV **svp; |
a0d0e21e |
1638 | SV *keysv = POPs; |
a0d0e21e |
1639 | HV *hv = (HV*)POPs; |
78f9721b |
1640 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a |
1641 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
be6c24e0 |
1642 | SV *sv; |
765f542d |
1643 | #ifdef PERL_COPY_ON_WRITE |
1644 | U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvUVX(keysv) : 0; |
1645 | #else |
1c846c1f |
1646 | U32 hash = (SvFAKE(keysv) && SvREADONLY(keysv)) ? SvUVX(keysv) : 0; |
765f542d |
1647 | #endif |
9c5ffd7c |
1648 | I32 preeminent = 0; |
a0d0e21e |
1649 | |
ae77835f |
1650 | if (SvTYPE(hv) == SVt_PVHV) { |
8d1f198f |
1651 | if (PL_op->op_private & OPpLVAL_INTRO) { |
1652 | MAGIC *mg; |
1653 | HV *stash; |
1654 | /* does the element we're localizing already exist? */ |
c39e6ab0 |
1655 | preeminent = |
8d1f198f |
1656 | /* can we determine whether it exists? */ |
1657 | ( !SvRMAGICAL(hv) |
1658 | || mg_find((SV*)hv, PERL_MAGIC_env) |
1659 | || ( (mg = mg_find((SV*)hv, PERL_MAGIC_tied)) |
1660 | /* Try to preserve the existenceness of a tied hash |
1661 | * element by using EXISTS and DELETE if possible. |
1662 | * Fallback to FETCH and STORE otherwise */ |
1663 | && (stash = SvSTASH(SvRV(SvTIED_obj((SV*)hv, mg)))) |
1664 | && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) |
1665 | && gv_fetchmethod_autoload(stash, "DELETE", TRUE) |
1666 | ) |
1667 | ) ? hv_exists_ent(hv, keysv, 0) : 1; |
c39e6ab0 |
1668 | |
8d1f198f |
1669 | } |
1c846c1f |
1670 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
97fcbf96 |
1671 | svp = he ? &HeVAL(he) : 0; |
ae77835f |
1672 | } |
c750a3ec |
1673 | else { |
a0d0e21e |
1674 | RETPUSHUNDEF; |
c750a3ec |
1675 | } |
a0d0e21e |
1676 | if (lval) { |
3280af22 |
1677 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 |
1678 | SV* lv; |
1679 | SV* key2; |
2d8e6c8d |
1680 | if (!defer) { |
1681 | STRLEN n_a; |
cea2e8a9 |
1682 | DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); |
2d8e6c8d |
1683 | } |
68dc0745 |
1684 | lv = sv_newmortal(); |
1685 | sv_upgrade(lv, SVt_PVLV); |
1686 | LvTYPE(lv) = 'y'; |
14befaf4 |
1687 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 |
1688 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
1689 | LvTARG(lv) = SvREFCNT_inc(hv); |
1690 | LvTARGLEN(lv) = 1; |
1691 | PUSHs(lv); |
1692 | RETURN; |
1693 | } |
533c011a |
1694 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f |
1695 | if (HvNAME(hv) && isGV(*svp)) |
533c011a |
1696 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc |
1697 | else { |
1698 | if (!preeminent) { |
1699 | STRLEN keylen; |
1700 | char *key = SvPV(keysv, keylen); |
57813020 |
1701 | SAVEDELETE(hv, savepvn(key,keylen), keylen); |
bfc4de9f |
1702 | } else |
1f5346dc |
1703 | save_helem(hv, keysv, svp); |
1704 | } |
5f05dabc |
1705 | } |
533c011a |
1706 | else if (PL_op->op_private & OPpDEREF) |
1707 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); |
a0d0e21e |
1708 | } |
3280af22 |
1709 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 |
1710 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1711 | * Pushing the magical RHS on to the stack is useless, since |
1712 | * that magic is soon destined to be misled by the local(), |
1713 | * and thus the later pp_sassign() will fail to mg_get() the |
1714 | * old value. This should also cure problems with delayed |
1715 | * mg_get()s. GSAR 98-07-03 */ |
1716 | if (!lval && SvGMAGICAL(sv)) |
1717 | sv = sv_mortalcopy(sv); |
1718 | PUSHs(sv); |
a0d0e21e |
1719 | RETURN; |
1720 | } |
1721 | |
1722 | PP(pp_leave) |
1723 | { |
39644a26 |
1724 | dSP; |
c09156bb |
1725 | register PERL_CONTEXT *cx; |
a0d0e21e |
1726 | register SV **mark; |
1727 | SV **newsp; |
1728 | PMOP *newpm; |
1729 | I32 gimme; |
1730 | |
533c011a |
1731 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e |
1732 | cx = &cxstack[cxstack_ix]; |
3280af22 |
1733 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e |
1734 | } |
1735 | |
1736 | POPBLOCK(cx,newpm); |
1737 | |
533c011a |
1738 | gimme = OP_GIMME(PL_op, -1); |
54310121 |
1739 | if (gimme == -1) { |
1740 | if (cxstack_ix >= 0) |
1741 | gimme = cxstack[cxstack_ix].blk_gimme; |
1742 | else |
1743 | gimme = G_SCALAR; |
1744 | } |
a0d0e21e |
1745 | |
a1f49e72 |
1746 | TAINT_NOT; |
54310121 |
1747 | if (gimme == G_VOID) |
1748 | SP = newsp; |
1749 | else if (gimme == G_SCALAR) { |
1750 | MARK = newsp + 1; |
09256e2f |
1751 | if (MARK <= SP) { |
54310121 |
1752 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1753 | *MARK = TOPs; |
1754 | else |
1755 | *MARK = sv_mortalcopy(TOPs); |
09256e2f |
1756 | } else { |
54310121 |
1757 | MEXTEND(mark,0); |
3280af22 |
1758 | *MARK = &PL_sv_undef; |
a0d0e21e |
1759 | } |
54310121 |
1760 | SP = MARK; |
a0d0e21e |
1761 | } |
54310121 |
1762 | else if (gimme == G_ARRAY) { |
a1f49e72 |
1763 | /* in case LEAVE wipes old return values */ |
1764 | for (mark = newsp + 1; mark <= SP; mark++) { |
1765 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { |
a0d0e21e |
1766 | *mark = sv_mortalcopy(*mark); |
a1f49e72 |
1767 | TAINT_NOT; /* Each item is independent */ |
1768 | } |
1769 | } |
a0d0e21e |
1770 | } |
3280af22 |
1771 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e |
1772 | |
1773 | LEAVE; |
1774 | |
1775 | RETURN; |
1776 | } |
1777 | |
1778 | PP(pp_iter) |
1779 | { |
39644a26 |
1780 | dSP; |
c09156bb |
1781 | register PERL_CONTEXT *cx; |
5f05dabc |
1782 | SV* sv; |
4633a7c4 |
1783 | AV* av; |
1d7c1841 |
1784 | SV **itersvp; |
a0d0e21e |
1785 | |
924508f0 |
1786 | EXTEND(SP, 1); |
a0d0e21e |
1787 | cx = &cxstack[cxstack_ix]; |
6b35e009 |
1788 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 |
1789 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e |
1790 | |
1d7c1841 |
1791 | itersvp = CxITERVAR(cx); |
4633a7c4 |
1792 | av = cx->blk_loop.iterary; |
89ea2908 |
1793 | if (SvTYPE(av) != SVt_PVAV) { |
1794 | /* iterate ($min .. $max) */ |
1795 | if (cx->blk_loop.iterlval) { |
1796 | /* string increment */ |
1797 | register SV* cur = cx->blk_loop.iterlval; |
1798 | STRLEN maxlen; |
1799 | char *max = SvPV((SV*)av, maxlen); |
1800 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
1d7c1841 |
1801 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 |
1802 | /* safe to reuse old SV */ |
1d7c1841 |
1803 | sv_setsv(*itersvp, cur); |
eaa5c2d6 |
1804 | } |
1c846c1f |
1805 | else |
eaa5c2d6 |
1806 | { |
1807 | /* we need a fresh SV every time so that loop body sees a |
1808 | * completely new SV for closures/references to work as |
1809 | * they used to */ |
1d7c1841 |
1810 | SvREFCNT_dec(*itersvp); |
1811 | *itersvp = newSVsv(cur); |
eaa5c2d6 |
1812 | } |
89ea2908 |
1813 | if (strEQ(SvPVX(cur), max)) |
1814 | sv_setiv(cur, 0); /* terminate next time */ |
1815 | else |
1816 | sv_inc(cur); |
1817 | RETPUSHYES; |
1818 | } |
1819 | RETPUSHNO; |
1820 | } |
1821 | /* integer increment */ |
1822 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) |
1823 | RETPUSHNO; |
7f61b687 |
1824 | |
3db8f154 |
1825 | /* don't risk potential race */ |
1d7c1841 |
1826 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 |
1827 | /* safe to reuse old SV */ |
1d7c1841 |
1828 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 |
1829 | } |
1c846c1f |
1830 | else |
eaa5c2d6 |
1831 | { |
1832 | /* we need a fresh SV every time so that loop body sees a |
1833 | * completely new SV for closures/references to work as they |
1834 | * used to */ |
1d7c1841 |
1835 | SvREFCNT_dec(*itersvp); |
1836 | *itersvp = newSViv(cx->blk_loop.iterix++); |
eaa5c2d6 |
1837 | } |
89ea2908 |
1838 | RETPUSHYES; |
1839 | } |
1840 | |
1841 | /* iterate array */ |
3280af22 |
1842 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) |
4633a7c4 |
1843 | RETPUSHNO; |
a0d0e21e |
1844 | |
1d7c1841 |
1845 | SvREFCNT_dec(*itersvp); |
a0d0e21e |
1846 | |
d42935ef |
1847 | if (SvMAGICAL(av) || AvREIFY(av)) { |
1848 | SV **svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE); |
1849 | if (svp) |
1850 | sv = *svp; |
1851 | else |
1852 | sv = Nullsv; |
1853 | } |
1854 | else { |
1855 | sv = AvARRAY(av)[++cx->blk_loop.iterix]; |
1856 | } |
1857 | if (sv) |
a0d0e21e |
1858 | SvTEMP_off(sv); |
a0d0e21e |
1859 | else |
3280af22 |
1860 | sv = &PL_sv_undef; |
8b530633 |
1861 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc |
1862 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc |
1863 | if (lv && SvREFCNT(lv) > 1) { |
1864 | SvREFCNT_dec(lv); |
1865 | lv = Nullsv; |
1866 | } |
5f05dabc |
1867 | if (lv) |
1868 | SvREFCNT_dec(LvTARG(lv)); |
1869 | else { |
68dc0745 |
1870 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc |
1871 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc |
1872 | LvTYPE(lv) = 'y'; |
14befaf4 |
1873 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
5f05dabc |
1874 | } |
1875 | LvTARG(lv) = SvREFCNT_inc(av); |
1876 | LvTARGOFF(lv) = cx->blk_loop.iterix; |
42718184 |
1877 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc |
1878 | sv = (SV*)lv; |
1879 | } |
a0d0e21e |
1880 | |
1d7c1841 |
1881 | *itersvp = SvREFCNT_inc(sv); |
a0d0e21e |
1882 | RETPUSHYES; |
1883 | } |
1884 | |
1885 | PP(pp_subst) |
1886 | { |
39644a26 |
1887 | dSP; dTARG; |
a0d0e21e |
1888 | register PMOP *pm = cPMOP; |
1889 | PMOP *rpm = pm; |
1890 | register SV *dstr; |
1891 | register char *s; |
1892 | char *strend; |
1893 | register char *m; |
1894 | char *c; |
1895 | register char *d; |
1896 | STRLEN clen; |
1897 | I32 iters = 0; |
1898 | I32 maxiters; |
1899 | register I32 i; |
1900 | bool once; |
71be2cbc |
1901 | bool rxtainted; |
a0d0e21e |
1902 | char *orig; |
22e551b9 |
1903 | I32 r_flags; |
aaa362c4 |
1904 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e |
1905 | STRLEN len; |
1906 | int force_on_match = 0; |
3280af22 |
1907 | I32 oldsave = PL_savestack_ix; |
792b2c16 |
1908 | STRLEN slen; |
f272994b |
1909 | bool doutf8 = FALSE; |
ed252734 |
1910 | #ifdef PERL_COPY_ON_WRITE |
1911 | bool is_cow; |
1912 | #endif |
db79b45b |
1913 | SV *nsv = Nullsv; |
a0d0e21e |
1914 | |
5cd24f17 |
1915 | /* known replacement string? */ |
1916 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; |
533c011a |
1917 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e |
1918 | TARG = POPs; |
1919 | else { |
54b9620d |
1920 | TARG = DEFSV; |
a0d0e21e |
1921 | EXTEND(SP,1); |
1c846c1f |
1922 | } |
d9f424b2 |
1923 | |
ed252734 |
1924 | #ifdef PERL_COPY_ON_WRITE |
1925 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, |
1926 | because they make integers such as 256 "false". */ |
1927 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; |
1928 | #else |
765f542d |
1929 | if (SvIsCOW(TARG)) |
1930 | sv_force_normal_flags(TARG,0); |
ed252734 |
1931 | #endif |
1932 | if ( |
1933 | #ifdef PERL_COPY_ON_WRITE |
1934 | !is_cow && |
1935 | #endif |
1936 | (SvREADONLY(TARG) |
68dc0745 |
1937 | || (SvTYPE(TARG) > SVt_PVLV |
ed252734 |
1938 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) |
d470f89e |
1939 | DIE(aTHX_ PL_no_modify); |
8ec5e241 |
1940 | PUTBACK; |
1941 | |
a0d0e21e |
1942 | s = SvPV(TARG, len); |
68dc0745 |
1943 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e |
1944 | force_on_match = 1; |
b3eb6a9b |
1945 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 |
1946 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
1947 | if (PL_tainted) |
b3eb6a9b |
1948 | rxtainted |= 2; |
9212bbba |
1949 | TAINT_NOT; |
a12c0f56 |
1950 | |
a30b2f1f |
1951 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 |
1952 | |
a0d0e21e |
1953 | force_it: |
1954 | if (!pm || !s) |
2269b42e |
1955 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e |
1956 | |
1957 | strend = s + len; |
a30b2f1f |
1958 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 |
1959 | maxiters = 2 * slen + 10; /* We can match twice at each |
1960 | position, once with zero-length, |
1961 | second time with non-zero. */ |
a0d0e21e |
1962 | |
3280af22 |
1963 | if (!rx->prelen && PL_curpm) { |
1964 | pm = PL_curpm; |
aaa362c4 |
1965 | rx = PM_GETRE(pm); |
a0d0e21e |
1966 | } |
22e551b9 |
1967 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
ed252734 |
1968 | ? REXEC_COPY_STR : 0; |
f722798b |
1969 | if (SvSCREAM(TARG)) |
22e551b9 |
1970 | r_flags |= REXEC_SCREAM; |
a0d0e21e |
1971 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 |
1972 | SAVEINT(PL_multiline); |
1973 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; |
a0d0e21e |
1974 | } |
1975 | orig = m = s; |
f722798b |
1976 | if (rx->reganch & RE_USE_INTUIT) { |
ee0b7718 |
1977 | PL_bostr = orig; |
f722798b |
1978 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1979 | |
1980 | if (!s) |
1981 | goto nope; |
1982 | /* How to do it in subst? */ |
1983 | /* if ( (rx->reganch & ROPT_CHECK_ALL) |
1c846c1f |
1984 | && !PL_sawampersand |
f722798b |
1985 | && ((rx->reganch & ROPT_NOSCAN) |
1986 | || !((rx->reganch & RE_INTUIT_TAIL) |
1987 | && (r_flags & REXEC_SCREAM)))) |
1988 | goto yup; |
1989 | */ |
a0d0e21e |
1990 | } |
71be2cbc |
1991 | |
1992 | /* only replace once? */ |
a0d0e21e |
1993 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc |
1994 | |
1995 | /* known replacement string? */ |
f272994b |
1996 | if (dstr) { |
8514a05a |
1997 | /* replacement needing upgrading? */ |
1998 | if (DO_UTF8(TARG) && !doutf8) { |
db79b45b |
1999 | nsv = sv_newmortal(); |
4a176938 |
2000 | SvSetSV(nsv, dstr); |
8514a05a |
2001 | if (PL_encoding) |
2002 | sv_recode_to_utf8(nsv, PL_encoding); |
2003 | else |
2004 | sv_utf8_upgrade(nsv); |
2005 | c = SvPV(nsv, clen); |
4a176938 |
2006 | doutf8 = TRUE; |
2007 | } |
2008 | else { |
2009 | c = SvPV(dstr, clen); |
2010 | doutf8 = DO_UTF8(dstr); |
8514a05a |
2011 | } |
f272994b |
2012 | } |
2013 | else { |
2014 | c = Nullch; |
2015 | doutf8 = FALSE; |
2016 | } |
2017 | |
71be2cbc |
2018 | /* can do inplace substitution? */ |
ed252734 |
2019 | if (c |
2020 | #ifdef PERL_COPY_ON_WRITE |
2021 | && !is_cow |
2022 | #endif |
2023 | && (I32)clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) |
db79b45b |
2024 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN) |
2025 | && (!doutf8 || SvUTF8(TARG))) { |
f722798b |
2026 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2027 | r_flags | REXEC_CHECKED)) |
2028 | { |
8ec5e241 |
2029 | SPAGAIN; |
3280af22 |
2030 | PUSHs(&PL_sv_no); |
71be2cbc |
2031 | LEAVE_SCOPE(oldsave); |
2032 | RETURN; |
2033 | } |
ed252734 |
2034 | #ifdef PERL_COPY_ON_WRITE |
2035 | if (SvIsCOW(TARG)) { |
2036 | assert (!force_on_match); |
2037 | goto have_a_cow; |
2038 | } |
2039 | #endif |
71be2cbc |
2040 | if (force_on_match) { |
2041 | force_on_match = 0; |
2042 | s = SvPV_force(TARG, len); |
2043 | goto force_it; |
2044 | } |
71be2cbc |
2045 | d = s; |
3280af22 |
2046 | PL_curpm = pm; |
71be2cbc |
2047 | SvSCREAM_off(TARG); /* disable possible screamer */ |
2048 | if (once) { |
48c036b1 |
2049 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
2050 | m = orig + rx->startp[0]; |
2051 | d = orig + rx->endp[0]; |
71be2cbc |
2052 | s = orig; |
2053 | if (m - s > strend - d) { /* faster to shorten from end */ |
2054 | if (clen) { |
2055 | Copy(c, m, clen, char); |
2056 | m += clen; |
a0d0e21e |
2057 | } |
71be2cbc |
2058 | i = strend - d; |
2059 | if (i > 0) { |
2060 | Move(d, m, i, char); |
2061 | m += i; |
a0d0e21e |
2062 | } |
71be2cbc |
2063 | *m = '\0'; |
2064 | SvCUR_set(TARG, m - s); |
2065 | } |
2066 | /*SUPPRESS 560*/ |
155aba94 |
2067 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc |
2068 | d -= clen; |
2069 | m = d; |
2070 | sv_chop(TARG, d-i); |
2071 | s += i; |
2072 | while (i--) |
2073 | *--d = *--s; |
2074 | if (clen) |
2075 | Copy(c, m, clen, char); |
2076 | } |
2077 | else if (clen) { |
2078 | d -= clen; |
2079 | sv_chop(TARG, d); |
2080 | Copy(c, d, clen, char); |
2081 | } |
2082 | else { |
2083 | sv_chop(TARG, d); |
2084 | } |
48c036b1 |
2085 | TAINT_IF(rxtainted & 1); |
8ec5e241 |
2086 | SPAGAIN; |
3280af22 |
2087 | PUSHs(&PL_sv_yes); |
71be2cbc |
2088 | } |
2089 | else { |
71be2cbc |
2090 | do { |
2091 | if (iters++ > maxiters) |
cea2e8a9 |
2092 | DIE(aTHX_ "Substitution loop"); |
d9f97599 |
2093 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
2094 | m = rx->startp[0] + orig; |
71be2cbc |
2095 | /*SUPPRESS 560*/ |
155aba94 |
2096 | if ((i = m - s)) { |
71be2cbc |
2097 | if (s != d) |
2098 | Move(s, d, i, char); |
2099 | d += i; |
a0d0e21e |
2100 | } |
71be2cbc |
2101 | if (clen) { |
2102 | Copy(c, d, clen, char); |
2103 | d += clen; |
2104 | } |
cf93c79d |
2105 | s = rx->endp[0] + orig; |
cea2e8a9 |
2106 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b |
2107 | TARG, NULL, |
2108 | /* don't match same null twice */ |
2109 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); |
71be2cbc |
2110 | if (s != d) { |
2111 | i = strend - s; |
2112 | SvCUR_set(TARG, d - SvPVX(TARG) + i); |
2113 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e |
2114 | } |
48c036b1 |
2115 | TAINT_IF(rxtainted & 1); |
8ec5e241 |
2116 | SPAGAIN; |
71be2cbc |
2117 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e |
2118 | } |
80b498e0 |
2119 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 |
2120 | TAINT_IF(rxtainted); |
8ec5e241 |
2121 | if (SvSMAGICAL(TARG)) { |
2122 | PUTBACK; |
2123 | mg_set(TARG); |
2124 | SPAGAIN; |
2125 | } |
9212bbba |
2126 | SvTAINT(TARG); |
aefe6dfc |
2127 | if (doutf8) |
2128 | SvUTF8_on(TARG); |
71be2cbc |
2129 | LEAVE_SCOPE(oldsave); |
2130 | RETURN; |
a0d0e21e |
2131 | } |
71be2cbc |
2132 | |
f722798b |
2133 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2134 | r_flags | REXEC_CHECKED)) |
2135 | { |
a0d0e21e |
2136 | if (force_on_match) { |
2137 | force_on_match = 0; |
2138 | s = SvPV_force(TARG, len); |
2139 | goto force_it; |
2140 | } |
ed252734 |
2141 | #ifdef PERL_COPY_ON_WRITE |
2142 | have_a_cow: |
2143 | #endif |
48c036b1 |
2144 | rxtainted |= RX_MATCH_TAINTED(rx); |
8ec5e241 |
2145 | dstr = NEWSV(25, len); |
a0d0e21e |
2146 | sv_setpvn(dstr, m, s-m); |
ffc61ed2 |
2147 | if (DO_UTF8(TARG)) |
2148 | SvUTF8_on(dstr); |
3280af22 |
2149 | PL_curpm = pm; |
a0d0e21e |
2150 | if (!c) { |
c09156bb |
2151 | register PERL_CONTEXT *cx; |
8ec5e241 |
2152 | SPAGAIN; |
a0d0e21e |
2153 | PUSHSUBST(cx); |
2154 | RETURNOP(cPMOP->op_pmreplroot); |
2155 | } |
cf93c79d |
2156 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e |
2157 | do { |
2158 | if (iters++ > maxiters) |
cea2e8a9 |
2159 | DIE(aTHX_ "Substitution loop"); |
d9f97599 |
2160 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d |
2161 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e |
2162 | m = s; |
2163 | s = orig; |
cf93c79d |
2164 | orig = rx->subbeg; |
a0d0e21e |
2165 | s = orig + (m - s); |
2166 | strend = s + (strend - m); |
2167 | } |
cf93c79d |
2168 | m = rx->startp[0] + orig; |
db79b45b |
2169 | if (doutf8 && !SvUTF8(dstr)) |
2170 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); |
2171 | else |
2172 | sv_catpvn(dstr, s, m-s); |
cf93c79d |
2173 | s = rx->endp[0] + orig; |
a0d0e21e |
2174 | if (clen) |
2175 | sv_catpvn(dstr, c, clen); |
2176 | if (once) |
2177 | break; |
ffc61ed2 |
2178 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2179 | TARG, NULL, r_flags)); |
db79b45b |
2180 | if (doutf8 && !DO_UTF8(TARG)) |
2181 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); |
89afcb60 |
2182 | else |
2183 | sv_catpvn(dstr, s, strend - s); |
748a9306 |
2184 | |
ed252734 |
2185 | #ifdef PERL_COPY_ON_WRITE |
2186 | /* The match may make the string COW. If so, brilliant, because that's |
2187 | just saved us one malloc, copy and free - the regexp has donated |
2188 | the old buffer, and we malloc an entirely new one, rather than the |
2189 | regexp malloc()ing a buffer and copying our original, only for |
2190 | us to throw it away here during the substitution. */ |
2191 | if (SvIsCOW(TARG)) { |
2192 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); |
2193 | } else |
2194 | #endif |
2195 | { |
2196 | (void)SvOOK_off(TARG); |
2197 | if (SvLEN(TARG)) |
2198 | Safefree(SvPVX(TARG)); |
2199 | } |
748a9306 |
2200 | SvPVX(TARG) = SvPVX(dstr); |
2201 | SvCUR_set(TARG, SvCUR(dstr)); |
2202 | SvLEN_set(TARG, SvLEN(dstr)); |
f272994b |
2203 | doutf8 |= DO_UTF8(dstr); |
748a9306 |
2204 | SvPVX(dstr) = 0; |
2205 | sv_free(dstr); |
2206 | |
48c036b1 |
2207 | TAINT_IF(rxtainted & 1); |
f878fbec |
2208 | SPAGAIN; |
48c036b1 |
2209 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2210 | |
a0d0e21e |
2211 | (void)SvPOK_only(TARG); |
f272994b |
2212 | if (doutf8) |
60aeb6fd |
2213 | SvUTF8_on(TARG); |
48c036b1 |
2214 | TAINT_IF(rxtainted); |
a0d0e21e |
2215 | SvSETMAGIC(TARG); |
9212bbba |
2216 | SvTAINT(TARG); |
4633a7c4 |
2217 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
2218 | RETURN; |
2219 | } |
5cd24f17 |
2220 | goto ret_no; |
a0d0e21e |
2221 | |
2222 | nope: |
1c846c1f |
2223 | ret_no: |
8ec5e241 |
2224 | SPAGAIN; |
3280af22 |
2225 | PUSHs(&PL_sv_no); |
4633a7c4 |
2226 | LEAVE_SCOPE(oldsave); |
a0d0e21e |
2227 | RETURN; |
2228 | } |
2229 | |
2230 | PP(pp_grepwhile) |
2231 | { |
39644a26 |
2232 | dSP; |
a0d0e21e |
2233 | |
2234 | if (SvTRUEx(POPs)) |
3280af22 |
2235 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2236 | ++*PL_markstack_ptr; |
a0d0e21e |
2237 | LEAVE; /* exit inner scope */ |
2238 | |
2239 | /* All done yet? */ |
3280af22 |
2240 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e |
2241 | I32 items; |
54310121 |
2242 | I32 gimme = GIMME_V; |
a0d0e21e |
2243 | |
2244 | LEAVE; /* exit outer scope */ |
2245 | (void)POPMARK; /* pop src */ |
3280af22 |
2246 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e |
2247 | (void)POPMARK; /* pop dst */ |
3280af22 |
2248 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 |
2249 | if (gimme == G_SCALAR) { |
a0d0e21e |
2250 | dTARGET; |
2251 | XPUSHi(items); |
a0d0e21e |
2252 | } |
54310121 |
2253 | else if (gimme == G_ARRAY) |
2254 | SP += items; |
a0d0e21e |
2255 | RETURN; |
2256 | } |
2257 | else { |
2258 | SV *src; |
2259 | |
2260 | ENTER; /* enter inner scope */ |
1d7c1841 |
2261 | SAVEVPTR(PL_curpm); |
a0d0e21e |
2262 | |
3280af22 |
2263 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e |
2264 | SvTEMP_off(src); |
54b9620d |
2265 | DEFSV = src; |
a0d0e21e |
2266 | |
2267 | RETURNOP(cLOGOP->op_other); |
2268 | } |
2269 | } |
2270 | |
2271 | PP(pp_leavesub) |
2272 | { |
39644a26 |
2273 | dSP; |
a0d0e21e |
2274 | SV **mark; |
2275 | SV **newsp; |
2276 | PMOP *newpm; |
2277 | I32 gimme; |
c09156bb |
2278 | register PERL_CONTEXT *cx; |
b0d9ce38 |
2279 | SV *sv; |
a0d0e21e |
2280 | |
2281 | POPBLOCK(cx,newpm); |
1c846c1f |
2282 | |
a1f49e72 |
2283 | TAINT_NOT; |
a0d0e21e |
2284 | if (gimme == G_SCALAR) { |
2285 | MARK = newsp + 1; |
a29cdaf0 |
2286 | if (MARK <= SP) { |
a8bba7fa |
2287 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 |
2288 | if (SvTEMP(TOPs)) { |
2289 | *MARK = SvREFCNT_inc(TOPs); |
2290 | FREETMPS; |
2291 | sv_2mortal(*MARK); |
cd06dffe |
2292 | } |
2293 | else { |
959e3673 |
2294 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 |
2295 | FREETMPS; |
959e3673 |
2296 | *MARK = sv_mortalcopy(sv); |
2297 | SvREFCNT_dec(sv); |
a29cdaf0 |
2298 | } |
cd06dffe |
2299 | } |
2300 | else |
a29cdaf0 |
2301 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe |
2302 | } |
2303 | else { |
f86702cc |
2304 | MEXTEND(MARK, 0); |
3280af22 |
2305 | *MARK = &PL_sv_undef; |
a0d0e21e |
2306 | } |
2307 | SP = MARK; |
2308 | } |
54310121 |
2309 | else if (gimme == G_ARRAY) { |
f86702cc |
2310 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 |
2311 | if (!SvTEMP(*MARK)) { |
f86702cc |
2312 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 |
2313 | TAINT_NOT; /* Each item is independent */ |
2314 | } |
f86702cc |
2315 | } |
a0d0e21e |
2316 | } |
f86702cc |
2317 | PUTBACK; |
1c846c1f |
2318 | |
b0d9ce38 |
2319 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 |
2320 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e |
2321 | |
2322 | LEAVE; |
b0d9ce38 |
2323 | LEAVESUB(sv); |
a0d0e21e |
2324 | return pop_return(); |
2325 | } |
2326 | |
cd06dffe |
2327 | /* This duplicates the above code because the above code must not |
2328 | * get any slower by more conditions */ |
2329 | PP(pp_leavesublv) |
2330 | { |
39644a26 |
2331 | dSP; |
cd06dffe |
2332 | SV **mark; |
2333 | SV **newsp; |
2334 | PMOP *newpm; |
2335 | I32 gimme; |
2336 | register PERL_CONTEXT *cx; |
b0d9ce38 |
2337 | SV *sv; |
cd06dffe |
2338 | |
2339 | POPBLOCK(cx,newpm); |
1c846c1f |
2340 | |
cd06dffe |
2341 | TAINT_NOT; |
2342 | |
2343 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { |
2344 | /* We are an argument to a function or grep(). |
2345 | * This kind of lvalueness was legal before lvalue |
2346 | * subroutines too, so be backward compatible: |
2347 | * cannot report errors. */ |
2348 | |
2349 | /* Scalar context *is* possible, on the LHS of -> only, |
2350 | * as in f()->meth(). But this is not an lvalue. */ |
2351 | if (gimme == G_SCALAR) |
2352 | goto temporise; |
2353 | if (gimme == G_ARRAY) { |
a8bba7fa |
2354 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe |
2355 | goto temporise_array; |
2356 | EXTEND_MORTAL(SP - newsp); |
2357 | for (mark = newsp + 1; mark <= SP; mark++) { |
2358 | if (SvTEMP(*mark)) |
2359 | /* empty */ ; |
2360 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) |
2361 | *mark = sv_mortalcopy(*mark); |
2362 | else { |
2363 | /* Can be a localized value subject to deletion. */ |
2364 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2365 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2366 | } |
2367 | } |
2368 | } |
2369 | } |
2370 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ |
2371 | /* Here we go for robustness, not for speed, so we change all |
2372 | * the refcounts so the caller gets a live guy. Cannot set |
2373 | * TEMP, so sv_2mortal is out of question. */ |
a8bba7fa |
2374 | if (!CvLVALUE(cx->blk_sub.cv)) { |
b0d9ce38 |
2375 | POPSUB(cx,sv); |
d470f89e |
2376 | PL_curpm = newpm; |
b0d9ce38 |
2377 | LEAVE; |
2378 | LEAVESUB(sv); |
d470f89e |
2379 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2380 | } |
cd06dffe |
2381 | if (gimme == G_SCALAR) { |
2382 | MARK = newsp + 1; |
2383 | EXTEND_MORTAL(1); |
2384 | if (MARK == SP) { |
d470f89e |
2385 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
b0d9ce38 |
2386 | POPSUB(cx,sv); |
d470f89e |
2387 | PL_curpm = newpm; |
b0d9ce38 |
2388 | LEAVE; |
2389 | LEAVESUB(sv); |
e9f19e3c |
2390 | DIE(aTHX_ "Can't return %s from lvalue subroutine", |
2391 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" |
2392 | : "a readonly value" : "a temporary"); |
d470f89e |
2393 | } |
cd06dffe |
2394 | else { /* Can be a localized value |
2395 | * subject to deletion. */ |
2396 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2397 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2398 | } |
2399 | } |
d470f89e |
2400 | else { /* Should not happen? */ |
b0d9ce38 |
2401 | POPSUB(cx,sv); |
d470f89e |
2402 | PL_curpm = newpm; |
b0d9ce38 |
2403 | LEAVE; |
2404 | LEAVESUB(sv); |
d470f89e |
2405 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe |
2406 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e |
2407 | } |
cd06dffe |
2408 | SP = MARK; |
2409 | } |
2410 | else if (gimme == G_ARRAY) { |
2411 | EXTEND_MORTAL(SP - newsp); |
2412 | for (mark = newsp + 1; mark <= SP; mark++) { |
f206cdda |
2413 | if (*mark != &PL_sv_undef |
2414 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
d470f89e |
2415 | /* Might be flattened array after $#array = */ |
2416 | PUTBACK; |
b0d9ce38 |
2417 | POPSUB(cx,sv); |
d470f89e |
2418 | PL_curpm = newpm; |
b0d9ce38 |
2419 | LEAVE; |
2420 | LEAVESUB(sv); |
f206cdda |
2421 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2422 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); |
d470f89e |
2423 | } |
cd06dffe |
2424 | else { |
cd06dffe |
2425 | /* Can be a localized value subject to deletion. */ |
2426 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
e1f15930 |
2427 | (void)SvREFCNT_inc(*mark); |
cd06dffe |
2428 | } |
2429 | } |
2430 | } |
2431 | } |
2432 | else { |
2433 | if (gimme == G_SCALAR) { |
2434 | temporise: |
2435 | MARK = newsp + 1; |
2436 | if (MARK <= SP) { |
a8bba7fa |
2437 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe |
2438 | if (SvTEMP(TOPs)) { |
2439 | *MARK = SvREFCNT_inc(TOPs); |
2440 | FREETMPS; |
2441 | sv_2mortal(*MARK); |
2442 | } |
2443 | else { |
959e3673 |
2444 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe |
2445 | FREETMPS; |
959e3673 |
2446 | *MARK = sv_mortalcopy(sv); |
2447 | SvREFCNT_dec(sv); |
cd06dffe |
2448 | } |
2449 | } |
2450 | else |
2451 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
2452 | } |
2453 | else { |
2454 | MEXTEND(MARK, 0); |
2455 | *MARK = &PL_sv_undef; |
2456 | } |
2457 | SP = MARK; |
2458 | } |
2459 | else if (gimme == G_ARRAY) { |
2460 | temporise_array: |
2461 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
2462 | if (!SvTEMP(*MARK)) { |
2463 | *MARK = sv_mortalcopy(*MARK); |
2464 | TAINT_NOT; /* Each item is independent */ |
2465 | } |
2466 | } |
2467 | } |
2468 | } |
2469 | PUTBACK; |
1c846c1f |
2470 | |
b0d9ce38 |
2471 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe |
2472 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2473 | |
2474 | LEAVE; |
b0d9ce38 |
2475 | LEAVESUB(sv); |
cd06dffe |
2476 | return pop_return(); |
2477 | } |
2478 | |
2479 | |
76e3520e |
2480 | STATIC CV * |
cea2e8a9 |
2481 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 |
2482 | { |
3280af22 |
2483 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 |
2484 | |
2485 | if (!PERLDB_SUB_NN) { |
2486 | GV *gv = CvGV(cv); |
2487 | |
2488 | save_item(dbsv); |
2489 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) |
1c846c1f |
2490 | || strEQ(GvNAME(gv), "END") |
491527d0 |
2491 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
2492 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) |
2493 | && (gv = (GV*)*svp) ))) { |
2494 | /* Use GV from the stack as a fallback. */ |
2495 | /* GV is potentially non-unique, or contain different CV. */ |
c2e66d9e |
2496 | SV *tmp = newRV((SV*)cv); |
2497 | sv_setsv(dbsv, tmp); |
2498 | SvREFCNT_dec(tmp); |
491527d0 |
2499 | } |
2500 | else { |
2501 | gv_efullname3(dbsv, gv, Nullch); |
2502 | } |
3de9ffa1 |
2503 | } |
2504 | else { |
155aba94 |
2505 | (void)SvUPGRADE(dbsv, SVt_PVIV); |
2506 | (void)SvIOK_on(dbsv); |
491527d0 |
2507 | SAVEIV(SvIVX(dbsv)); |
5bc28da9 |
2508 | SvIVX(dbsv) = PTR2IV(cv); /* Do it the quickest way */ |
3de9ffa1 |
2509 | } |
491527d0 |
2510 | |
3de9ffa1 |
2511 | if (CvXSUB(cv)) |
3280af22 |
2512 | PL_curcopdb = PL_curcop; |
2513 | cv = GvCV(PL_DBsub); |
3de9ffa1 |
2514 | return cv; |
2515 | } |
2516 | |
a0d0e21e |
2517 | PP(pp_entersub) |
2518 | { |
39644a26 |
2519 | dSP; dPOPss; |
a0d0e21e |
2520 | GV *gv; |
2521 | HV *stash; |
2522 | register CV *cv; |
c09156bb |
2523 | register PERL_CONTEXT *cx; |
5d94fbed |
2524 | I32 gimme; |
533c011a |
2525 | bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e |
2526 | |
2527 | if (!sv) |
cea2e8a9 |
2528 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e |
2529 | switch (SvTYPE(sv)) { |
f1025168 |
2530 | /* This is overwhelming the most common case: */ |
2531 | case SVt_PVGV: |
2532 | if (!(cv = GvCVu((GV*)sv))) |
2533 | cv = sv_2cv(sv, &stash, &gv, FALSE); |
2534 | if (!cv) { |
2535 | ENTER; |
2536 | SAVETMPS; |
2537 | goto try_autoload; |
2538 | } |
2539 | break; |
a0d0e21e |
2540 | default: |
2541 | if (!SvROK(sv)) { |
748a9306 |
2542 | char *sym; |
2d8e6c8d |
2543 | STRLEN n_a; |
748a9306 |
2544 | |
3280af22 |
2545 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a |
2546 | if (hasargs) |
3280af22 |
2547 | SP = PL_stack_base + POPMARK; |
a0d0e21e |
2548 | RETURN; |
fb73857a |
2549 | } |
15ff848f |
2550 | if (SvGMAGICAL(sv)) { |
2551 | mg_get(sv); |
f5f1d18e |
2552 | if (SvROK(sv)) |
2553 | goto got_rv; |
15ff848f |
2554 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; |
2555 | } |
2556 | else |
2d8e6c8d |
2557 | sym = SvPV(sv, n_a); |
15ff848f |
2558 | if (!sym) |
cea2e8a9 |
2559 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a |
2560 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 |
2561 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 |
2562 | cv = get_cv(sym, TRUE); |
a0d0e21e |
2563 | break; |
2564 | } |
f5f1d18e |
2565 | got_rv: |
f5284f61 |
2566 | { |
2567 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
2568 | tryAMAGICunDEREF(to_cv); |
2569 | } |
a0d0e21e |
2570 | cv = (CV*)SvRV(sv); |
2571 | if (SvTYPE(cv) == SVt_PVCV) |
2572 | break; |
2573 | /* FALL THROUGH */ |
2574 | case SVt_PVHV: |
2575 | case SVt_PVAV: |
cea2e8a9 |
2576 | DIE(aTHX_ "Not a CODE reference"); |
f1025168 |
2577 | /* This is the second most common case: */ |
a0d0e21e |
2578 | case SVt_PVCV: |
2579 | cv = (CV*)sv; |
2580 | break; |
a0d0e21e |
2581 | } |
2582 | |
2583 | ENTER; |
2584 | SAVETMPS; |
2585 | |
2586 | retry: |
a0d0e21e |
2587 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
f1025168 |
2588 | goto fooey; |
a0d0e21e |
2589 | } |
2590 | |
54310121 |
2591 | gimme = GIMME_V; |
67caa1fe |
2592 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
06492da6 |
2593 | if (CvASSERTION(cv) && PL_DBassertion) |
2594 | sv_setiv(PL_DBassertion, 1); |
2595 | |
4f01c5a5 |
2596 | cv = get_db_sub(&sv, cv); |
67caa1fe |
2597 | if (!cv) |
cea2e8a9 |
2598 | DIE(aTHX_ "No DBsub routine"); |
67caa1fe |
2599 | } |
a0d0e21e |
2600 | |
f1025168 |
2601 | if (!(CvXSUB(cv))) { |
2602 | /* This path taken at least 75% of the time */ |
a0d0e21e |
2603 | dMARK; |
2604 | register I32 items = SP - MARK; |
a0d0e21e |
2605 | AV* padlist = CvPADLIST(cv); |
533c011a |
2606 | push_return(PL_op->op_next); |
a0d0e21e |
2607 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2608 | PUSHSUB(cx); |
2609 | CvDEPTH(cv)++; |
6b35e009 |
2610 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2611 | * that eval'' ops within this sub know the correct lexical space. |
a3985cdc |
2612 | * Owing the speed considerations, we choose instead to search for |
2613 | * the cv using find_runcv() when calling doeval(). |
6b35e009 |
2614 | */ |
a0d0e21e |
2615 | if (CvDEPTH(cv) < 2) |
2616 | (void)SvREFCNT_inc(cv); |
dd2155a4 |
2617 | else { |
1d7c1841 |
2618 | PERL_STACK_OVERFLOW_CHECK(); |
dd2155a4 |
2619 | pad_push(padlist, CvDEPTH(cv), 1); |
a0d0e21e |
2620 | } |
dd2155a4 |
2621 | PAD_SET_CUR(padlist, CvDEPTH(cv)); |
6d4ff0d2 |
2622 | if (hasargs) |
6d4ff0d2 |
2623 | { |
2624 | AV* av; |
a0d0e21e |
2625 | SV** ary; |
2626 | |
77a005ab |
2627 | #if 0 |
bf49b057 |
2628 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 |
2629 | "%p entersub preparing @_\n", thr)); |
77a005ab |
2630 | #endif |
dd2155a4 |
2631 | av = (AV*)PAD_SVl(0); |
221373f0 |
2632 | if (AvREAL(av)) { |
2633 | /* @_ is normally not REAL--this should only ever |
2634 | * happen when DB::sub() calls things that modify @_ */ |
2635 | av_clear(av); |
2636 | AvREAL_off(av); |
2637 | AvREIFY_on(av); |
2638 | } |
3280af22 |
2639 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2640 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); |
dd2155a4 |
2641 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 |
2642 | cx->blk_sub.argarray = av; |
a0d0e21e |
2643 | ++MARK; |
2644 | |
2645 | if (items > AvMAX(av) + 1) { |
2646 | ary = AvALLOC(av); |
2647 | if (AvARRAY(av) != ary) { |
2648 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); |
2649 | SvPVX(av) = (char*)ary; |
2650 | } |
2651 | if (items > AvMAX(av) + 1) { |
2652 | AvMAX(av) = items - 1; |
2653 | Renew(ary,items,SV*); |
2654 | AvALLOC(av) = ary; |
2655 | SvPVX(av) = (char*)ary; |
2656 | } |
2657 | } |
2658 | Copy(MARK,AvARRAY(av),items,SV*); |
93965878 |
2659 | AvFILLp(av) = items - 1; |
1c846c1f |
2660 | |
a0d0e21e |
2661 | while (items--) { |
2662 | if (*MARK) |
2663 | SvTEMP_off(*MARK); |
2664 | MARK++; |
2665 | } |
2666 | } |
4a925ff6 |
2667 | /* warning must come *after* we fully set up the context |
2668 | * stuff so that __WARN__ handlers can safely dounwind() |
2669 | * if they want to |
2670 | */ |
2671 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) |
2672 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) |
2673 | sub_crush_depth(cv); |
77a005ab |
2674 | #if 0 |
bf49b057 |
2675 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 |
2676 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab |
2677 | #endif |
a0d0e21e |
2678 | RETURNOP(CvSTART(cv)); |
2679 | } |
f1025168 |
2680 | else { |
2681 | #ifdef PERL_XSUB_OLDSTYLE |
2682 | if (CvOLDSTYLE(cv)) { |
2683 | I32 (*fp3)(int,int,int); |
2684 | dMARK; |
2685 | register I32 items = SP - MARK; |
2686 | /* We dont worry to copy from @_. */ |
2687 | while (SP > mark) { |
2688 | SP[1] = SP[0]; |
2689 | SP--; |
2690 | } |
2691 | PL_stack_sp = mark + 1; |
2692 | fp3 = (I32(*)(int,int,int))CvXSUB(cv); |
2693 | items = (*fp3)(CvXSUBANY(cv).any_i32, |
2694 | MARK - PL_stack_base + 1, |
2695 | items); |
2696 | PL_stack_sp = PL_stack_base + items; |
2697 | } |
2698 | else |
2699 | #endif /* PERL_XSUB_OLDSTYLE */ |
2700 | { |
2701 | I32 markix = TOPMARK; |
2702 | |
2703 | PUTBACK; |
2704 | |
2705 | if (!hasargs) { |
2706 | /* Need to copy @_ to stack. Alternative may be to |
2707 | * switch stack to @_, and copy return values |
2708 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ |
2709 | AV* av; |
2710 | I32 items; |
2711 | av = GvAV(PL_defgv); |
2712 | items = AvFILLp(av) + 1; /* @_ is not tieable */ |
2713 | |
2714 | if (items) { |
2715 | /* Mark is at the end of the stack. */ |
2716 | EXTEND(SP, items); |
2717 | Copy(AvARRAY(av), SP + 1, items, SV*); |
2718 | SP += items; |
2719 | PUTBACK ; |
2720 | } |
2721 | } |
2722 | /* We assume first XSUB in &DB::sub is the called one. */ |
2723 | if (PL_curcopdb) { |
2724 | SAVEVPTR(PL_curcop); |
2725 | PL_curcop = PL_curcopdb; |
2726 | PL_curcopdb = NULL; |
2727 | } |
2728 | /* Do we need to open block here? XXXX */ |
2729 | (void)(*CvXSUB(cv))(aTHX_ cv); |
2730 | |
2731 | /* Enforce some sanity in scalar context. */ |
2732 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { |
2733 | if (markix > PL_stack_sp - PL_stack_base) |
2734 | *(PL_stack_base + markix) = &PL_sv_undef; |
2735 | else |
2736 | *(PL_stack_base + markix) = *PL_stack_sp; |
2737 | PL_stack_sp = PL_stack_base + markix; |
2738 | } |
2739 | } |
2740 | LEAVE; |
2741 | return NORMAL; |
2742 | } |
2743 | |
2744 | assert (0); /* Cannot get here. */ |
2745 | /* This is deliberately moved here as spaghetti code to keep it out of the |
2746 | hot path. */ |
2747 | { |
2748 | GV* autogv; |
2749 | SV* sub_name; |
2750 | |
2751 | fooey: |
2752 | /* anonymous or undef'd function leaves us no recourse */ |
2753 | if (CvANON(cv) || !(gv = CvGV(cv))) |
2754 | DIE(aTHX_ "Undefined subroutine called"); |
2755 | |
2756 | /* autoloaded stub? */ |
2757 | if (cv != GvCV(gv)) { |
2758 | cv = GvCV(gv); |
2759 | } |
2760 | /* should call AUTOLOAD now? */ |
2761 | else { |
2762 | try_autoload: |
2763 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
2764 | FALSE))) |
2765 | { |
2766 | cv = GvCV(autogv); |
2767 | } |
2768 | /* sorry */ |
2769 | else { |
2770 | sub_name = sv_newmortal(); |
2771 | gv_efullname3(sub_name, gv, Nullch); |
35c1215d |
2772 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", sub_name); |
f1025168 |
2773 | } |
2774 | } |
2775 | if (!cv) |
2776 | DIE(aTHX_ "Not a CODE reference"); |
2777 | goto retry; |
2778 | } |
a0d0e21e |
2779 | } |
2780 | |
44a8e56a |
2781 | void |
864dbfa3 |
2782 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a |
2783 | { |
2784 | if (CvANON(cv)) |
9014280d |
2785 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a |
2786 | else { |
2787 | SV* tmpstr = sv_newmortal(); |
2788 | gv_efullname3(tmpstr, CvGV(cv), Nullch); |
35c1215d |
2789 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
2790 | tmpstr); |
44a8e56a |
2791 | } |
2792 | } |
2793 | |
a0d0e21e |
2794 | PP(pp_aelem) |
2795 | { |
39644a26 |
2796 | dSP; |
a0d0e21e |
2797 | SV** svp; |
d804643f |
2798 | SV* elemsv = POPs; |
2799 | IV elem = SvIV(elemsv); |
68dc0745 |
2800 | AV* av = (AV*)POPs; |
78f9721b |
2801 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a |
2802 | U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av)); |
be6c24e0 |
2803 | SV *sv; |
a0d0e21e |
2804 | |
e35c1634 |
2805 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
35c1215d |
2806 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Use of reference \"%"SVf"\" as array index", elemsv); |
748a9306 |
2807 | if (elem > 0) |
3280af22 |
2808 | elem -= PL_curcop->cop_arybase; |
a0d0e21e |
2809 | if (SvTYPE(av) != SVt_PVAV) |
2810 | RETPUSHUNDEF; |
68dc0745 |
2811 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e |
2812 | if (lval) { |
3280af22 |
2813 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 |
2814 | SV* lv; |
2815 | if (!defer) |
cea2e8a9 |
2816 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 |
2817 | lv = sv_newmortal(); |
2818 | sv_upgrade(lv, SVt_PVLV); |
2819 | LvTYPE(lv) = 'y'; |
14befaf4 |
2820 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 |
2821 | LvTARG(lv) = SvREFCNT_inc(av); |
2822 | LvTARGOFF(lv) = elem; |
2823 | LvTARGLEN(lv) = 1; |
2824 | PUSHs(lv); |
2825 | RETURN; |
2826 | } |
bfc4de9f |
2827 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 |
2828 | save_aelem(av, elem, svp); |
533c011a |
2829 | else if (PL_op->op_private & OPpDEREF) |
2830 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); |
a0d0e21e |
2831 | } |
3280af22 |
2832 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 |
2833 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2834 | sv = sv_mortalcopy(sv); |
2835 | PUSHs(sv); |
a0d0e21e |
2836 | RETURN; |
2837 | } |
2838 | |
02a9e968 |
2839 | void |
864dbfa3 |
2840 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 |
2841 | { |
2842 | if (SvGMAGICAL(sv)) |
2843 | mg_get(sv); |
2844 | if (!SvOK(sv)) { |
2845 | if (SvREADONLY(sv)) |
cea2e8a9 |
2846 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc |
2847 | if (SvTYPE(sv) < SVt_RV) |
2848 | sv_upgrade(sv, SVt_RV); |
2849 | else if (SvTYPE(sv) >= SVt_PV) { |
2850 | (void)SvOOK_off(sv); |
2851 | Safefree(SvPVX(sv)); |
2852 | SvLEN(sv) = SvCUR(sv) = 0; |
2853 | } |
68dc0745 |
2854 | switch (to_what) { |
5f05dabc |
2855 | case OPpDEREF_SV: |
8c52afec |
2856 | SvRV(sv) = NEWSV(355,0); |
5f05dabc |
2857 | break; |
2858 | case OPpDEREF_AV: |
2859 | SvRV(sv) = (SV*)newAV(); |
2860 | break; |
2861 | case OPpDEREF_HV: |
2862 | SvRV(sv) = (SV*)newHV(); |
2863 | break; |
2864 | } |
02a9e968 |
2865 | SvROK_on(sv); |
2866 | SvSETMAGIC(sv); |
2867 | } |
2868 | } |
2869 | |
a0d0e21e |
2870 | PP(pp_method) |
2871 | { |
39644a26 |
2872 | dSP; |
f5d5a27c |
2873 | SV* sv = TOPs; |
2874 | |
2875 | if (SvROK(sv)) { |
eda383f2 |
2876 | SV* rsv = SvRV(sv); |
f5d5a27c |
2877 | if (SvTYPE(rsv) == SVt_PVCV) { |
2878 | SETs(rsv); |
2879 | RETURN; |
2880 | } |
2881 | } |
2882 | |
2883 | SETs(method_common(sv, Null(U32*))); |
2884 | RETURN; |
2885 | } |
2886 | |
2887 | PP(pp_method_named) |
2888 | { |
39644a26 |
2889 | dSP; |
3848b962 |
2890 | SV* sv = cSVOP_sv; |
f5d5a27c |
2891 | U32 hash = SvUVX(sv); |
2892 | |
2893 | XPUSHs(method_common(sv, &hash)); |
2894 | RETURN; |
2895 | } |
2896 | |
2897 | STATIC SV * |
2898 | S_method_common(pTHX_ SV* meth, U32* hashp) |
2899 | { |
a0d0e21e |
2900 | SV* sv; |
2901 | SV* ob; |
2902 | GV* gv; |
56304f61 |
2903 | HV* stash; |
2904 | char* name; |
f5d5a27c |
2905 | STRLEN namelen; |
9c5ffd7c |
2906 | char* packname = 0; |
0dae17bd |
2907 | SV *packsv = Nullsv; |
ac91690f |
2908 | STRLEN packlen; |
a0d0e21e |
2909 | |
f5d5a27c |
2910 | name = SvPV(meth, namelen); |
3280af22 |
2911 | sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c |
2912 | |
4f1b7578 |
2913 | if (!sv) |
2914 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); |
2915 | |
16d20bd9 |
2916 | if (SvGMAGICAL(sv)) |
af09ea45 |
2917 | mg_get(sv); |
a0d0e21e |
2918 | if (SvROK(sv)) |
16d20bd9 |
2919 | ob = (SV*)SvRV(sv); |
a0d0e21e |
2920 | else { |
2921 | GV* iogv; |
a0d0e21e |
2922 | |
af09ea45 |
2923 | /* this isn't a reference */ |
56304f61 |
2924 | packname = Nullch; |
a0d0e21e |
2925 | if (!SvOK(sv) || |
56304f61 |
2926 | !(packname = SvPV(sv, packlen)) || |
a0d0e21e |
2927 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
2928 | !(ob=(SV*)GvIO(iogv))) |
2929 | { |
af09ea45 |
2930 | /* this isn't the name of a filehandle either */ |
1c846c1f |
2931 | if (!packname || |
fd400ab9 |
2932 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 |
2933 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd |
2934 | : !isIDFIRST(*packname) |
2935 | )) |
2936 | { |
f5d5a27c |
2937 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
2938 | SvOK(sv) ? "without a package or object reference" |
2939 | : "on an undefined value"); |
834a4ddd |
2940 | } |
af09ea45 |
2941 | /* assume it's a package name */ |
2942 | stash = gv_stashpvn(packname, packlen, FALSE); |
0dae17bd |
2943 | if (!stash) |
2944 | packsv = sv; |
ac91690f |
2945 | goto fetch; |
a0d0e21e |
2946 | } |
af09ea45 |
2947 | /* it _is_ a filehandle name -- replace with a reference */ |
3280af22 |
2948 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e |
2949 | } |
2950 | |
af09ea45 |
2951 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 |
2952 | if (!ob || !(SvOBJECT(ob) |
2953 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) |
2954 | && SvOBJECT(ob)))) |
2955 | { |
f5d5a27c |
2956 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
2957 | name); |
f0d43078 |
2958 | } |
a0d0e21e |
2959 | |
56304f61 |
2960 | stash = SvSTASH(ob); |
a0d0e21e |
2961 | |
ac91690f |
2962 | fetch: |
af09ea45 |
2963 | /* NOTE: stash may be null, hope hv_fetch_ent and |
2964 | gv_fetchmethod can cope (it seems they can) */ |
2965 | |
f5d5a27c |
2966 | /* shortcut for simple names */ |
2967 | if (hashp) { |
2968 | HE* he = hv_fetch_ent(stash, meth, 0, *hashp); |
2969 | if (he) { |
2970 | gv = (GV*)HeVAL(he); |
2971 | if (isGV(gv) && GvCV(gv) && |
2972 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) |
2973 | return (SV*)GvCV(gv); |
2974 | } |
2975 | } |
2976 | |
0dae17bd |
2977 | gv = gv_fetchmethod(stash ? stash : (HV*)packsv, name); |
af09ea45 |
2978 | |
56304f61 |
2979 | if (!gv) { |
af09ea45 |
2980 | /* This code tries to figure out just what went wrong with |
2981 | gv_fetchmethod. It therefore needs to duplicate a lot of |
2982 | the internals of that function. We can't move it inside |
2983 | Perl_gv_fetchmethod_autoload(), however, since that would |
2984 | cause UNIVERSAL->can("NoSuchPackage::foo") to croak, and we |
2985 | don't want that. |
2986 | */ |
56304f61 |
2987 | char* leaf = name; |
2988 | char* sep = Nullch; |
2989 | char* p; |
2990 | |
2991 | for (p = name; *p; p++) { |
2992 | if (*p == '\'') |
2993 | sep = p, leaf = p + 1; |
2994 | else if (*p == ':' && *(p + 1) == ':') |
2995 | sep = p, leaf = p + 2; |
2996 | } |
2997 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { |
af09ea45 |
2998 | /* the method name is unqualified or starts with SUPER:: */ |
2999 | packname = sep ? CopSTASHPV(PL_curcop) : |
3000 | stash ? HvNAME(stash) : packname; |
56304f61 |
3001 | packlen = strlen(packname); |
3002 | } |
3003 | else { |
af09ea45 |
3004 | /* the method name is qualified */ |
56304f61 |
3005 | packname = name; |
3006 | packlen = sep - name; |
3007 | } |
af09ea45 |
3008 | |
3009 | /* we're relying on gv_fetchmethod not autovivifying the stash */ |
3010 | if (gv_stashpvn(packname, packlen, FALSE)) { |
c1899e02 |
3011 | Perl_croak(aTHX_ |
af09ea45 |
3012 | "Can't locate object method \"%s\" via package \"%.*s\"", |
3013 | leaf, (int)packlen, packname); |
c1899e02 |
3014 | } |
3015 | else { |
3016 | Perl_croak(aTHX_ |
af09ea45 |
3017 | "Can't locate object method \"%s\" via package \"%.*s\"" |
3018 | " (perhaps you forgot to load \"%.*s\"?)", |
3019 | leaf, (int)packlen, packname, (int)packlen, packname); |
c1899e02 |
3020 | } |
56304f61 |
3021 | } |
f5d5a27c |
3022 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e |
3023 | } |