Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
4c79ee7a | 3 | * Copyright (c) 1991-2003, Larry Wall |
a0d0e21e LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
8 | */ | |
9 | ||
10 | /* | |
11 | * Then he heard Merry change the note, and up went the Horn-cry of Buckland, | |
12 | * shaking the air. | |
13 | * | |
14 | * Awake! Awake! Fear, Fire, Foes! Awake! | |
15 | * Fire, Foes! Awake! | |
16 | */ | |
17 | ||
18 | #include "EXTERN.h" | |
864dbfa3 | 19 | #define PERL_IN_PP_HOT_C |
a0d0e21e LW |
20 | #include "perl.h" |
21 | ||
22 | /* Hot code. */ | |
23 | ||
24 | PP(pp_const) | |
25 | { | |
39644a26 | 26 | dSP; |
1d7c1841 | 27 | XPUSHs(cSVOP_sv); |
a0d0e21e LW |
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 LW |
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 LW |
48 | RETURN; |
49 | } | |
50 | ||
51 | PP(pp_null) | |
52 | { | |
53 | return NORMAL; | |
54 | } | |
55 | ||
7399586d HS |
56 | PP(pp_setstate) |
57 | { | |
58 | PL_curcop = (COP*)PL_op; | |
59 | return NORMAL; | |
60 | } | |
61 | ||
a0d0e21e LW |
62 | PP(pp_pushmark) |
63 | { | |
3280af22 | 64 | PUSHMARK(PL_stack_sp); |
a0d0e21e LW |
65 | return NORMAL; |
66 | } | |
67 | ||
68 | PP(pp_stringify) | |
69 | { | |
39644a26 | 70 | dSP; dTARGET; |
6050d10e | 71 | sv_copypv(TARG,TOPs); |
a0d0e21e LW |
72 | SETTARG; |
73 | RETURN; | |
74 | } | |
75 | ||
76 | PP(pp_gv) | |
77 | { | |
39644a26 | 78 | dSP; |
1d7c1841 | 79 | XPUSHs((SV*)cGVOP_gv); |
a0d0e21e LW |
80 | RETURN; |
81 | } | |
82 | ||
83 | PP(pp_and) | |
84 | { | |
39644a26 | 85 | dSP; |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
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 LW |
125 | LEAVE_SCOPE(oldsave); |
126 | return NORMAL; | |
127 | } | |
128 | ||
a0d0e21e LW |
129 | PP(pp_concat) |
130 | { | |
39644a26 | 131 | dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 LW |
132 | { |
133 | dPOPTOPssrl; | |
8d6d96c1 HS |
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 HS |
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 HS |
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 PN |
165 | #if defined(PERL_Y2KWARN) |
166 | if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K) && SvOK(TARG)) { | |
8d6d96c1 HS |
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 HS |
171 | "about to append an integer to '19'"); |
172 | } | |
fd15e783 PN |
173 | } |
174 | #endif | |
175 | ||
8d6d96c1 HS |
176 | if (lbyte != rbyte) { |
177 | if (lbyte) | |
178 | sv_utf8_upgrade_nomg(TARG); | |
179 | else { | |
db79b45b JH |
180 | if (!rcopied) |
181 | right = sv_2mortal(newSVpvn(rpv, rlen)); | |
8d6d96c1 HS |
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 LW |
188 | SETTARG; |
189 | RETURN; | |
748a9306 | 190 | } |
a0d0e21e LW |
191 | } |
192 | ||
193 | PP(pp_padsv) | |
194 | { | |
39644a26 | 195 | dSP; dTARGET; |
a0d0e21e | 196 | XPUSHs(TARG); |
533c011a NIS |
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 NIS |
203 | SPAGAIN; |
204 | } | |
4633a7c4 | 205 | } |
a0d0e21e LW |
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 IZ |
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 IZ |
222 | } |
223 | } | |
a0d0e21e LW |
224 | return do_readline(); |
225 | } | |
226 | ||
227 | PP(pp_eq) | |
228 | { | |
39644a26 | 229 | dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f AS |
230 | #ifndef NV_PRESERVES_UV |
231 | if (SvROK(TOPs) && SvROK(TOPm1s)) { | |
e61d22ef NC |
232 | SP--; |
233 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); | |
4c9fe80f AS |
234 | RETURN; |
235 | } | |
236 | #endif | |
28e5dec8 JH |
237 | #ifdef PERL_PRESERVE_IVUV |
238 | SvIV_please(TOPs); | |
239 | if (SvIOK(TOPs)) { | |
4c9fe80f AS |
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 JH |
243 | SvIV_please(TOPm1s); |
244 | if (SvIOK(TOPm1s)) { | |
245 | bool auvok = SvUOK(TOPm1s); | |
246 | bool buvok = SvUOK(TOPs); | |
a12c0f56 | 247 | |
1605159e NC |
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 JH |
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 NC |
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 JH |
282 | RETURN; |
283 | } | |
284 | } | |
285 | } | |
286 | #endif | |
a0d0e21e LW |
287 | { |
288 | dPOPnv; | |
54310121 | 289 | SETs(boolSV(TOPn == value)); |
a0d0e21e LW |
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 NC |
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 LW |
307 | SvSETMAGIC(TOPs); |
308 | return NORMAL; | |
309 | } | |
310 | ||
311 | PP(pp_or) | |
312 | { | |
39644a26 | 313 | dSP; |
a0d0e21e LW |
314 | if (SvTRUE(TOPs)) |
315 | RETURN; | |
316 | else { | |
317 | --SP; | |
318 | RETURNOP(cLOGOP->op_other); | |
319 | } | |
320 | } | |
321 | ||
c963b151 BD |
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 LW |
358 | PP(pp_add) |
359 | { | |
39644a26 | 360 | dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 JH |
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 NC |
374 | fp maths for integer values. |
375 | ||
a00b5bd3 | 376 | How to detect overflow? |
7dca457a NC |
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 JH |
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 JH |
414 | register UV auv = 0; |
415 | bool auvok = FALSE; | |
7dca457a NC |
416 | bool a_valid = 0; |
417 | ||
28e5dec8 | 418 | if (!useleft) { |
7dca457a NC |
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 JH |
440 | } |
441 | } | |
7dca457a NC |
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 NC |
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 NC |
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 JH |
482 | } |
483 | } | |
7dca457a NC |
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 NC |
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 JH |
501 | } |
502 | } | |
7dca457a NC |
503 | RETURN; |
504 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
505 | } |
506 | } | |
507 | #endif | |
a0d0e21e | 508 | { |
28e5dec8 JH |
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 LW |
517 | } |
518 | } | |
519 | ||
520 | PP(pp_aelemfast) | |
521 | { | |
39644a26 | 522 | dSP; |
1d7c1841 | 523 | AV *av = GvAV(cGVOP_gv); |
533c011a NIS |
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 GS |
528 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
529 | sv = sv_mortalcopy(sv); | |
530 | PUSHs(sv); | |
a0d0e21e LW |
531 | RETURN; |
532 | } | |
533 | ||
534 | PP(pp_join) | |
535 | { | |
39644a26 | 536 | dSP; dMARK; dTARGET; |
a0d0e21e LW |
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 LW |
560 | RETURN; |
561 | } | |
562 | ||
563 | /* Oversized hot code. */ | |
564 | ||
565 | PP(pp_print) | |
566 | { | |
39644a26 | 567 | dSP; dMARK; dORIGMARK; |
a0d0e21e LW |
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 LW |
574 | gv = (GV*)*++MARK; |
575 | else | |
3280af22 | 576 | gv = PL_defoutgv; |
5b468f54 AMS |
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 NIS |
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 AMS |
604 | if ((GvEGV(gv)) && (io = GvIO(GvEGV(gv))) |
605 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
01bb7c6d | 606 | goto had_magic; |
2dd78f96 JH |
607 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
608 | report_evil_fh(gv, io, PL_op->op_type); | |
93189314 | 609 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
610 | goto just_say_no; |
611 | } | |
612 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 613 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 NC |
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 LW |
620 | goto just_say_no; |
621 | } | |
622 | else { | |
623 | MARK++; | |
7889fe52 | 624 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e LW |
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 LW |
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 NIS |
647 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
648 | if (!do_print(PL_ors_sv, fp)) /* $\ */ | |
a0d0e21e LW |
649 | goto just_say_no; |
650 | ||
651 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 652 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
653 | goto just_say_no; |
654 | } | |
655 | } | |
656 | SP = ORIGMARK; | |
3280af22 | 657 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
658 | RETURN; |
659 | ||
660 | just_say_no: | |
661 | SP = ORIGMARK; | |
3280af22 | 662 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
663 | RETURN; |
664 | } | |
665 | ||
666 | PP(pp_rv2av) | |
667 | { | |
39644a26 | 668 | dSP; dTOPss; |
a0d0e21e LW |
669 | AV *av; |
670 | ||
671 | if (SvROK(sv)) { | |
672 | wasref: | |
f5284f61 IZ |
673 | tryAMAGICunDEREF(to_av); |
674 | ||
a0d0e21e LW |
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 LW |
680 | RETURN; |
681 | } | |
78f9721b SM |
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 RGS |
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 LW |
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 LW |
697 | RETURN; |
698 | } | |
78f9721b SM |
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 LW |
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 LW |
714 | if (SvGMAGICAL(sv)) { |
715 | mg_get(sv); | |
716 | if (SvROK(sv)) | |
717 | goto wasref; | |
718 | } | |
719 | if (!SvOK(sv)) { | |
533c011a NIS |
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 IZ |
728 | } |
729 | RETSETUNDEF; | |
a0d0e21e | 730 | } |
c9d5ac95 | 731 | sym = SvPV(sv,len); |
35cd451c GS |
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 GS |
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 GS |
742 | } |
743 | else { | |
744 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 745 | DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); |
35cd451c GS |
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 LW |
757 | RETURN; |
758 | } | |
78f9721b SM |
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 LW |
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 NIS |
780 | else { |
781 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
782 | } | |
a0d0e21e LW |
783 | SP += maxarg; |
784 | } | |
c754c3d7 | 785 | else if (GIMME_V == G_SCALAR) { |
a0d0e21e LW |
786 | dTARGET; |
787 | I32 maxarg = AvFILL(av) + 1; | |
f5284f61 | 788 | SETi(maxarg); |
a0d0e21e LW |
789 | } |
790 | RETURN; | |
791 | } | |
792 | ||
793 | PP(pp_rv2hv) | |
794 | { | |
39644a26 | 795 | dSP; dTOPss; |
a0d0e21e LW |
796 | HV *hv; |
797 | ||
798 | if (SvROK(sv)) { | |
799 | wasref: | |
f5284f61 IZ |
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 LW |
806 | SETs((SV*)hv); |
807 | RETURN; | |
808 | } | |
78f9721b SM |
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 RGS |
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 LW |
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 LW |
823 | SETs((SV*)hv); |
824 | RETURN; | |
825 | } | |
78f9721b SM |
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 LW |
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 LW |
841 | if (SvGMAGICAL(sv)) { |
842 | mg_get(sv); | |
843 | if (SvROK(sv)) | |
844 | goto wasref; | |
845 | } | |
846 | if (!SvOK(sv)) { | |
533c011a NIS |
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 LW |
852 | if (GIMME == G_ARRAY) { |
853 | SP--; | |
854 | RETURN; | |
855 | } | |
a0d0e21e LW |
856 | RETSETUNDEF; |
857 | } | |
c9d5ac95 | 858 | sym = SvPV(sv,len); |
35cd451c GS |
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 GS |
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 GS |
869 | } |
870 | else { | |
871 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 872 | DIE(aTHX_ PL_no_symref, sym, "a HASH"); |
35cd451c GS |
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 LW |
883 | SETs((SV*)hv); |
884 | RETURN; | |
885 | } | |
78f9721b SM |
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 LW |
893 | } |
894 | } | |
895 | ||
896 | if (GIMME == G_ARRAY) { /* array wanted */ | |
3280af22 | 897 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 | 898 | return do_kv(); |
a0d0e21e LW |
899 | } |
900 | else { | |
901 | dTARGET; | |
b9c39e73 | 902 | if (HvFILL(hv)) |
57def98f JH |
903 | Perl_sv_setpvf(aTHX_ TARG, "%"IVdf"/%"IVdf, |
904 | (IV)HvFILL(hv), (IV)HvMAX(hv) + 1); | |
a0d0e21e LW |
905 | else |
906 | sv_setiv(TARG, 0); | |
c750a3ec | 907 | |
a0d0e21e LW |
908 | SETTARG; |
909 | RETURN; | |
910 | } | |
911 | } | |
912 | ||
10c8fecd GS |
913 | STATIC void |
914 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
915 | { | |
916 | if (*relem) { | |
917 | SV *tmpstr; | |
6d822dc4 MS |
918 | HE *didstore; |
919 | ||
920 | if (ckWARN(WARN_MISC)) { | |
10c8fecd GS |
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 GS |
927 | "Reference found where even-sized list expected"); |
928 | } | |
929 | else | |
9014280d | 930 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd GS |
931 | "Odd number of elements in hash assignment"); |
932 | } | |
6d822dc4 MS |
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 GS |
943 | } |
944 | } | |
945 | ||
a0d0e21e LW |
946 | PP(pp_aassign) |
947 | { | |
39644a26 | 948 | dSP; |
3280af22 NIS |
949 | SV **lastlelem = PL_stack_sp; |
950 | SV **lastrelem = PL_stack_base + POPMARK; | |
951 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
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 LW |
961 | HV *hash; |
962 | I32 i; | |
963 | int magic; | |
964 | ||
3280af22 | 965 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
a0d0e21e LW |
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 GS |
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 LW |
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 LW |
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 LW |
996 | i = 0; |
997 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 998 | SV **didstore; |
a0d0e21e LW |
999 | sv = NEWSV(28,0); |
1000 | assert(*relem); | |
1001 | sv_setsv(sv,*relem); | |
1002 | *(relem++) = sv; | |
5117ca91 GS |
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 LW |
1011 | } |
1012 | break; | |
10c8fecd | 1013 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e LW |
1014 | SV *tmpstr; |
1015 | ||
1016 | hash = (HV*)sv; | |
748a9306 | 1017 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e LW |
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 LW |
1026 | tmpstr = NEWSV(29,0); |
1027 | if (*relem) | |
1028 | sv_setsv(tmpstr,*relem); /* value */ | |
1029 | *(relem++) = tmpstr; | |
5117ca91 GS |
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 LW |
1043 | } |
1044 | break; | |
1045 | default: | |
6fc92669 GS |
1046 | if (SvIMMORTAL(sv)) { |
1047 | if (relem <= lastrelem) | |
1048 | relem++; | |
1049 | break; | |
a0d0e21e LW |
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 LW |
1057 | SvSETMAGIC(sv); |
1058 | break; | |
1059 | } | |
1060 | } | |
3280af22 NIS |
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 AD |
1065 | #else |
1066 | # ifdef HAS_SETREUID | |
3280af22 | 1067 | (void)setreuid(PL_uid,PL_euid); |
56febc5e AD |
1068 | # else |
1069 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
1070 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1071 | (void)setruid(PL_uid); | |
1072 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 1073 | } |
56febc5e AD |
1074 | # endif /* HAS_SETRUID */ |
1075 | # ifdef HAS_SETEUID | |
b28d0864 NIS |
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 NIS |
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 AD |
1086 | # endif /* HAS_SETREUID */ |
1087 | #endif /* HAS_SETRESUID */ | |
d8eceb89 JH |
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 AD |
1094 | #else |
1095 | # ifdef HAS_SETREGID | |
3280af22 | 1096 | (void)setregid(PL_gid,PL_egid); |
56febc5e AD |
1097 | # else |
1098 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
1099 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1100 | (void)setrgid(PL_gid); | |
1101 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 1102 | } |
56febc5e AD |
1103 | # endif /* HAS_SETRGID */ |
1104 | # ifdef HAS_SETEGID | |
b28d0864 NIS |
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 NIS |
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 AD |
1115 | # endif /* HAS_SETREGID */ |
1116 | #endif /* HAS_SETRESGID */ | |
d8eceb89 JH |
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 LW |
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 LW |
1142 | } |
1143 | ||
8782bef2 GB |
1144 | PP(pp_qr) |
1145 | { | |
39644a26 | 1146 | dSP; |
8782bef2 GB |
1147 | register PMOP *pm = cPMOP; |
1148 | SV *rv = sv_newmortal(); | |
57668c4d | 1149 | SV *sv = newSVrv(rv, "Regexp"); |
e08e52cf AMS |
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 GB |
1153 | RETURNX(PUSHs(rv)); |
1154 | } | |
1155 | ||
a0d0e21e LW |
1156 | PP(pp_match) |
1157 | { | |
39644a26 | 1158 | dSP; dTARG; |
a0d0e21e | 1159 | register PMOP *pm = cPMOP; |
d65afb4b | 1160 | PMOP *dynpm = pm; |
a0d0e21e LW |
1161 | register char *t; |
1162 | register char *s; | |
1163 | char *strend; | |
1164 | I32 global; | |
f722798b IZ |
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 LW |
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 LW |
1177 | TARG = POPs; |
1178 | else { | |
54b9620d | 1179 | TARG = DEFSV; |
a0d0e21e LW |
1180 | EXTEND(SP,1); |
1181 | } | |
d9f424b2 | 1182 | |
c277df42 | 1183 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e LW |
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 LW |
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 NIS |
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 IZ |
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 HS |
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 LW |
1228 | } |
1229 | } | |
14977893 JH |
1230 | if ((!global && rx->nparens) |
1231 | || SvTEMP(TARG) || PL_sawampersand) | |
1232 | r_flags |= REXEC_COPY_STR; | |
1c846c1f | 1233 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
1234 | r_flags |= REXEC_SCREAM; |
1235 | ||
a0d0e21e | 1236 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { |
3280af22 NIS |
1237 | SAVEINT(PL_multiline); |
1238 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
1239 | } |
1240 | ||
1241 | play_it_again: | |
cf93c79d IZ |
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 NIS |
1249 | if (rx->reganch & RE_USE_INTUIT && |
1250 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { | |
ee0b7718 | 1251 | PL_bostr = truebase; |
f722798b IZ |
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 IZ |
1258 | && ((rx->reganch & ROPT_NOSCAN) |
1259 | || !((rx->reganch & RE_INTUIT_TAIL) | |
05b4157f GS |
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 HS |
1267 | if (dynpm->op_pmflags & PMf_ONCE) |
1268 | dynpm->op_pmdynflags |= PMdf_USED; | |
a0d0e21e LW |
1269 | goto gotcha; |
1270 | } | |
1271 | else | |
1272 | goto ret_no; | |
1273 | /*NOTREACHED*/ | |
1274 | ||
1275 | gotcha: | |
72311751 GS |
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 JH |
1282 | nparens = rx->nparens; |
1283 | if (global && !nparens) | |
a0d0e21e LW |
1284 | i = 1; |
1285 | else | |
1286 | i = 0; | |
c277df42 | 1287 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1288 | EXTEND(SP, nparens + i); |
1289 | EXTEND_MORTAL(nparens + i); | |
1290 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e LW |
1291 | PUSHs(sv_newmortal()); |
1292 | /*SUPPRESS 560*/ | |
cf93c79d IZ |
1293 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
1294 | len = rx->endp[i] - rx->startp[i]; | |
290deeac A |
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 LW |
1302 | } |
1303 | } | |
1304 | if (global) { | |
d65afb4b | 1305 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
0af80b60 HS |
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 IZ |
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 LW |
1325 | goto play_it_again; |
1326 | } | |
ffc61ed2 | 1327 | else if (!nparens) |
bde848c5 | 1328 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1329 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
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 DM |
1338 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1339 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
a0d0e21e | 1340 | } |
cf93c79d IZ |
1341 | if (rx->startp[0] != -1) { |
1342 | mg->mg_len = rx->endp[0]; | |
d9f97599 | 1343 | if (rx->startp[0] == rx->endp[0]) |
748a9306 LW |
1344 | mg->mg_flags |= MGf_MINMATCH; |
1345 | else | |
1346 | mg->mg_flags &= ~MGf_MINMATCH; | |
1347 | } | |
a0d0e21e | 1348 | } |
4633a7c4 | 1349 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1350 | RETPUSHYES; |
1351 | } | |
1352 | ||
f722798b | 1353 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1354 | if (rxtainted) |
1355 | RX_MATCH_TAINTED_on(rx); | |
1356 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1357 | PL_curpm = pm; |
d65afb4b HS |
1358 | if (dynpm->op_pmflags & PMf_ONCE) |
1359 | dynpm->op_pmdynflags |= PMdf_USED; | |
cf93c79d IZ |
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 NIS |
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 JH |
1377 | if (PL_sawampersand) { |
1378 | I32 off; | |
ed252734 NC |
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 NC |
1394 | rx->subbeg = savepvn(t, strend - t); |
1395 | #ifdef PERL_COPY_ON_WRITE | |
1396 | rx->saved_copy = Nullsv; | |
1397 | #endif | |
1398 | } | |
14977893 JH |
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 LW |
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 LW |
1419 | } |
1420 | } | |
4633a7c4 | 1421 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1422 | if (gimme == G_ARRAY) |
1423 | RETURN; | |
1424 | RETPUSHNO; | |
1425 | } | |
1426 | ||
1427 | OP * | |
864dbfa3 | 1428 | Perl_do_readline(pTHX) |
a0d0e21e LW |
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 HS |
1448 | if (gimme == G_SCALAR) { |
1449 | SV* result = POPs; | |
1450 | SvSetSV_nosteal(TARG, result); | |
1451 | PUSHTARG; | |
1452 | } | |
e79b0511 | 1453 | RETURN; |
1454 | } | |
a0d0e21e LW |
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 NIS |
1465 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1466 | SvSETMAGIC(GvSV(PL_last_in_gv)); | |
a2008d6d GS |
1467 | fp = IoIFP(io); |
1468 | goto have_fp; | |
a0d0e21e LW |
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 LW |
1474 | } |
1475 | } | |
0d44d22b NC |
1476 | else if (type == OP_GLOB) |
1477 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
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 LW |
1484 | } |
1485 | if (!fp) { | |
790090df HS |
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 GS |
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 SM |
1496 | /* undef TARG, and push that undefined value */ |
1497 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
a0d0e21e LW |
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 LW |
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 AMS |
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 AP |
1526 | /* This should not be marked tainted if the fp is marked clean */ |
1527 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1528 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1529 | TAINT; \ | |
1530 | SvTAINTED_on(sv); \ | |
1531 | } | |
1532 | ||
684bef36 | 1533 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1534 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1535 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1536 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1537 | |
a0d0e21e | 1538 | for (;;) { |
09e8efcc | 1539 | PUTBACK; |
fbad3eb5 GS |
1540 | if (!sv_gets(sv, fp, offset) |
1541 | && (type == OP_GLOB || SNARF_EOF(gimme, PL_rs, io, sv))) | |
1542 | { | |
760ac839 | 1543 | PerlIO_clearerr(fp); |
a0d0e21e | 1544 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1545 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1546 | if (fp) |
1547 | continue; | |
3280af22 | 1548 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1549 | } |
1550 | else if (type == OP_GLOB) { | |
e476b1b5 | 1551 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
9014280d | 1552 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
4eb79ab5 | 1553 | "glob failed (child exited with status %d%s)", |
894356b3 | 1554 | (int)(STATUS_CURRENT >> 8), |
cf494569 | 1555 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 | 1556 | } |
a0d0e21e | 1557 | } |
54310121 | 1558 | if (gimme == G_SCALAR) { |
79628082 | 1559 | SV_CHECK_THINKFIRST_COW_DROP(TARG); |
a0d0e21e | 1560 | (void)SvOK_off(TARG); |
09e8efcc | 1561 | SPAGAIN; |
a0d0e21e LW |
1562 | PUSHTARG; |
1563 | } | |
3887d568 | 1564 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
1588 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1589 | continue; | |
1590 | } | |
1591 | } | |
54310121 | 1592 | if (gimme == G_ARRAY) { |
a0d0e21e LW |
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 LW |
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 LW |
1624 | |
1625 | ENTER; | |
1626 | ||
1627 | SAVETMPS; | |
924508f0 | 1628 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
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 NC |
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 DM |
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 DM |
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 GS |
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 SC |
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 SC |
1703 | save_helem(hv, keysv, svp); |
1704 | } | |
5f05dabc | 1705 | } |
533c011a NIS |
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 GS |
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 LW |
1719 | RETURN; |
1720 | } | |
1721 | ||
1722 | PP(pp_leave) | |
1723 | { | |
39644a26 | 1724 | dSP; |
c09156bb | 1725 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
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 LW |
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 CS |
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 CS |
1767 | TAINT_NOT; /* Each item is independent */ |
1768 | } | |
1769 | } | |
a0d0e21e | 1770 | } |
3280af22 | 1771 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e LW |
1772 | |
1773 | LEAVE; | |
1774 | ||
1775 | RETURN; | |
1776 | } | |
1777 | ||
1778 | PP(pp_iter) | |
1779 | { | |
39644a26 | 1780 | dSP; |
c09156bb | 1781 | register PERL_CONTEXT *cx; |
5f05dabc | 1782 | SV* sv; |
4633a7c4 | 1783 | AV* av; |
1d7c1841 | 1784 | SV **itersvp; |
a0d0e21e | 1785 | |
924508f0 | 1786 | EXTEND(SP, 1); |
a0d0e21e | 1787 | cx = &cxstack[cxstack_ix]; |
6b35e009 | 1788 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 | 1789 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1790 | |
1d7c1841 | 1791 | itersvp = CxITERVAR(cx); |
4633a7c4 | 1792 | av = cx->blk_loop.iterary; |
89ea2908 GA |
1793 | if (SvTYPE(av) != SVt_PVAV) { |
1794 | /* iterate ($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 GA |
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 GS |
1810 | SvREFCNT_dec(*itersvp); |
1811 | *itersvp = newSVsv(cur); | |
eaa5c2d6 | 1812 | } |
89ea2908 GA |
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 GA |
1831 | { |
1832 | /* we need a fresh SV every time so that loop body sees a | |
1833 | * completely new SV for closures/references to work as they | |
1834 | * used to */ | |
1d7c1841 GS |
1835 | SvREFCNT_dec(*itersvp); |
1836 | *itersvp = newSViv(cx->blk_loop.iterix++); | |
eaa5c2d6 | 1837 | } |
89ea2908 GA |
1838 | RETPUSHYES; |
1839 | } | |
1840 | ||
1841 | /* iterate array */ | |
3280af22 | 1842 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) |
4633a7c4 | 1843 | RETPUSHNO; |
a0d0e21e | 1844 | |
1d7c1841 | 1845 | SvREFCNT_dec(*itersvp); |
a0d0e21e | 1846 | |
d42935ef JH |
1847 | if (SvMAGICAL(av) || AvREIFY(av)) { |
1848 | SV **svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE); | |
1849 | if (svp) | |
1850 | sv = *svp; | |
1851 | else | |
1852 | sv = Nullsv; | |
1853 | } | |
1854 | else { | |
1855 | sv = AvARRAY(av)[++cx->blk_loop.iterix]; | |
1856 | } | |
1857 | if (sv) | |
a0d0e21e | 1858 | SvTEMP_off(sv); |
a0d0e21e | 1859 | else |
3280af22 | 1860 | sv = &PL_sv_undef; |
8b530633 | 1861 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc | 1862 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc | 1863 | if (lv && SvREFCNT(lv) > 1) { |
1864 | SvREFCNT_dec(lv); | |
1865 | lv = Nullsv; | |
1866 | } | |
5f05dabc | 1867 | if (lv) |
1868 | SvREFCNT_dec(LvTARG(lv)); | |
1869 | else { | |
68dc0745 | 1870 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc | 1871 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc | 1872 | LvTYPE(lv) = 'y'; |
14befaf4 | 1873 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
5f05dabc | 1874 | } |
1875 | LvTARG(lv) = SvREFCNT_inc(av); | |
1876 | LvTARGOFF(lv) = cx->blk_loop.iterix; | |
42718184 | 1877 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc | 1878 | sv = (SV*)lv; |
1879 | } | |
a0d0e21e | 1880 | |
1d7c1841 | 1881 | *itersvp = SvREFCNT_inc(sv); |
a0d0e21e LW |
1882 | RETPUSHYES; |
1883 | } | |
1884 | ||
1885 | PP(pp_subst) | |
1886 | { | |
39644a26 | 1887 | dSP; dTARG; |
a0d0e21e LW |
1888 | register PMOP *pm = cPMOP; |
1889 | PMOP *rpm = pm; | |
1890 | register SV *dstr; | |
1891 | register char *s; | |
1892 | char *strend; | |
1893 | register char *m; | |
1894 | char *c; | |
1895 | register char *d; | |
1896 | STRLEN clen; | |
1897 | I32 iters = 0; | |
1898 | I32 maxiters; | |
1899 | register I32 i; | |
1900 | bool once; | |
71be2cbc | 1901 | bool rxtainted; |
a0d0e21e | 1902 | char *orig; |
22e551b9 | 1903 | I32 r_flags; |
aaa362c4 | 1904 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
1905 | STRLEN len; |
1906 | int force_on_match = 0; | |
3280af22 | 1907 | I32 oldsave = PL_savestack_ix; |
792b2c16 | 1908 | STRLEN slen; |
f272994b | 1909 | bool doutf8 = FALSE; |
ed252734 NC |
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 LW |
1918 | TARG = POPs; |
1919 | else { | |
54b9620d | 1920 | TARG = DEFSV; |
a0d0e21e | 1921 | EXTEND(SP,1); |
1c846c1f | 1922 | } |
d9f424b2 | 1923 | |
ed252734 NC |
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 NC |
1929 | if (SvIsCOW(TARG)) |
1930 | sv_force_normal_flags(TARG,0); | |
ed252734 NC |
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 NIS |
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 NIS |
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 LW |
1953 | force_it: |
1954 | if (!pm || !s) | |
2269b42e | 1955 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
1956 | |
1957 | strend = s + len; | |
a30b2f1f | 1958 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
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 NIS |
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 NIS |
1972 | SAVEINT(PL_multiline); |
1973 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
1974 | } |
1975 | orig = m = s; | |
f722798b | 1976 | if (rx->reganch & RE_USE_INTUIT) { |
ee0b7718 | 1977 | PL_bostr = orig; |
f722798b IZ |
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 IZ |
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 JH |
1997 | /* replacement needing upgrading? */ |
1998 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 1999 | nsv = sv_newmortal(); |
4a176938 | 2000 | SvSetSV(nsv, dstr); |
8514a05a JH |
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 JH |
2006 | doutf8 = TRUE; |
2007 | } | |
2008 | else { | |
2009 | c = SvPV(dstr, clen); | |
2010 | doutf8 = DO_UTF8(dstr); | |
8514a05a | 2011 | } |
f272994b A |
2012 | } |
2013 | else { | |
2014 | c = Nullch; | |
2015 | doutf8 = FALSE; | |
2016 | } | |
2017 | ||
71be2cbc | 2018 | /* can do inplace substitution? */ |
ed252734 NC |
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 JH |
2024 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN) |
2025 | && (!doutf8 || SvUTF8(TARG))) { | |
f722798b IZ |
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 NC |
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 IZ |
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 IZ |
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 NIS |
2121 | if (SvSMAGICAL(TARG)) { |
2122 | PUTBACK; | |
2123 | mg_set(TARG); | |
2124 | SPAGAIN; | |
2125 | } | |
9212bbba | 2126 | SvTAINT(TARG); |
aefe6dfc JH |
2127 | if (doutf8) |
2128 | SvUTF8_on(TARG); | |
71be2cbc | 2129 | LEAVE_SCOPE(oldsave); |
2130 | RETURN; | |
a0d0e21e | 2131 | } |
71be2cbc | 2132 | |
f722798b IZ |
2133 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2134 | r_flags | REXEC_CHECKED)) | |
2135 | { | |
a0d0e21e LW |
2136 | if (force_on_match) { |
2137 | force_on_match = 0; | |
2138 | s = SvPV_force(TARG, len); | |
2139 | goto force_it; | |
2140 | } | |
ed252734 NC |
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 JH |
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 LW |
2153 | PUSHSUBST(cx); |
2154 | RETURNOP(cPMOP->op_pmreplroot); | |
2155 | } | |
cf93c79d | 2156 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
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 LW |
2162 | m = s; |
2163 | s = orig; | |
cf93c79d | 2164 | orig = rx->subbeg; |
a0d0e21e LW |
2165 | s = orig + (m - s); |
2166 | strend = s + (strend - m); | |
2167 | } | |
cf93c79d | 2168 | m = rx->startp[0] + orig; |
db79b45b JH |
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 LW |
2174 | if (clen) |
2175 | sv_catpvn(dstr, c, clen); | |
2176 | if (once) | |
2177 | break; | |
ffc61ed2 JH |
2178 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2179 | TARG, NULL, r_flags)); | |
db79b45b JH |
2180 | if (doutf8 && !DO_UTF8(TARG)) |
2181 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); | |
89afcb60 A |
2182 | else |
2183 | sv_catpvn(dstr, s, strend - s); | |
748a9306 | 2184 | |
ed252734 NC |
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 LW |
2200 | SvPVX(TARG) = SvPVX(dstr); |
2201 | SvCUR_set(TARG, SvCUR(dstr)); | |
2202 | SvLEN_set(TARG, SvLEN(dstr)); | |
f272994b | 2203 | doutf8 |= DO_UTF8(dstr); |
748a9306 LW |
2204 | SvPVX(dstr) = 0; |
2205 | sv_free(dstr); | |
2206 | ||
48c036b1 | 2207 | TAINT_IF(rxtainted & 1); |
f878fbec | 2208 | SPAGAIN; |
48c036b1 GS |
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 LW |
2218 | RETURN; |
2219 | } | |
5cd24f17 | 2220 | goto ret_no; |
a0d0e21e LW |
2221 | |
2222 | nope: | |
1c846c1f | 2223 | ret_no: |
8ec5e241 | 2224 | SPAGAIN; |
3280af22 | 2225 | PUSHs(&PL_sv_no); |
4633a7c4 | 2226 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2227 | RETURN; |
2228 | } | |
2229 | ||
2230 | PP(pp_grepwhile) | |
2231 | { | |
39644a26 | 2232 | dSP; |
a0d0e21e LW |
2233 | |
2234 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2235 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2236 | ++*PL_markstack_ptr; | |
a0d0e21e LW |
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 LW |
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 LW |
2250 | dTARGET; |
2251 | XPUSHi(items); | |
a0d0e21e | 2252 | } |
54310121 | 2253 | else if (gimme == G_ARRAY) |
2254 | SP += items; | |
a0d0e21e LW |
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 LW |
2266 | |
2267 | RETURNOP(cLOGOP->op_other); | |
2268 | } | |
2269 | } | |
2270 | ||
2271 | PP(pp_leavesub) | |
2272 | { | |
39644a26 | 2273 | dSP; |
a0d0e21e LW |
2274 | SV **mark; |
2275 | SV **newsp; | |
2276 | PMOP *newpm; | |
2277 | I32 gimme; | |
c09156bb | 2278 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2279 | SV *sv; |
a0d0e21e LW |
2280 | |
2281 | POPBLOCK(cx,newpm); | |
1c846c1f | 2282 | |
a1f49e72 | 2283 | TAINT_NOT; |
a0d0e21e LW |
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 IZ |
2288 | if (SvTEMP(TOPs)) { |
2289 | *MARK = SvREFCNT_inc(TOPs); | |
2290 | FREETMPS; | |
2291 | sv_2mortal(*MARK); | |
cd06dffe GS |
2292 | } |
2293 | else { | |
959e3673 | 2294 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2295 | FREETMPS; |
959e3673 GS |
2296 | *MARK = sv_mortalcopy(sv); |
2297 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2298 | } |
cd06dffe GS |
2299 | } |
2300 | else | |
a29cdaf0 | 2301 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe GS |
2302 | } |
2303 | else { | |
f86702cc | 2304 | MEXTEND(MARK, 0); |
3280af22 | 2305 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
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 CS |
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 LW |
2321 | |
2322 | LEAVE; | |
b0d9ce38 | 2323 | LEAVESUB(sv); |
a0d0e21e LW |
2324 | return pop_return(); |
2325 | } | |
2326 | ||
cd06dffe GS |
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 GS |
2332 | SV **mark; |
2333 | SV **newsp; | |
2334 | PMOP *newpm; | |
2335 | I32 gimme; | |
2336 | register PERL_CONTEXT *cx; | |
b0d9ce38 | 2337 | SV *sv; |
cd06dffe GS |
2338 | |
2339 | POPBLOCK(cx,newpm); | |
1c846c1f | 2340 | |
cd06dffe GS |
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 GS |
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 GS |
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 GS |
2377 | LEAVE; |
2378 | LEAVESUB(sv); | |
d470f89e GS |
2379 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2380 | } | |
cd06dffe GS |
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 GS |
2388 | LEAVE; |
2389 | LEAVESUB(sv); | |
e9f19e3c HS |
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 GS |
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 GS |
2398 | } |
2399 | } | |
d470f89e | 2400 | else { /* Should not happen? */ |
b0d9ce38 | 2401 | POPSUB(cx,sv); |
d470f89e | 2402 | PL_curpm = newpm; |
b0d9ce38 GS |
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 GS |
2408 | SP = MARK; |
2409 | } | |
2410 | else if (gimme == G_ARRAY) { | |
2411 | EXTEND_MORTAL(SP - newsp); | |
2412 | for (mark = newsp + 1; mark <= SP; mark++) { | |
f206cdda AMS |
2413 | if (*mark != &PL_sv_undef |
2414 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { | |
d470f89e GS |
2415 | /* Might be flattened array after $#array = */ |
2416 | PUTBACK; | |
b0d9ce38 | 2417 | POPSUB(cx,sv); |
d470f89e | 2418 | PL_curpm = newpm; |
b0d9ce38 GS |
2419 | LEAVE; |
2420 | LEAVESUB(sv); | |
f206cdda AMS |
2421 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2422 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
d470f89e | 2423 | } |
cd06dffe | 2424 | else { |
cd06dffe GS |
2425 | /* Can be a localized value subject to deletion. */ |
2426 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2427 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
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 GS |
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 GS |
2446 | *MARK = sv_mortalcopy(sv); |
2447 | SvREFCNT_dec(sv); | |
cd06dffe GS |
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 GS |
2472 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2473 | ||
2474 | LEAVE; | |
b0d9ce38 | 2475 | LEAVESUB(sv); |
cd06dffe GS |
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 GS |
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 GS |
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 GS |
2496 | SV *tmp = newRV((SV*)cv); |
2497 | sv_setsv(dbsv, tmp); | |
2498 | SvREFCNT_dec(tmp); | |
491527d0 GS |
2499 | } |
2500 | else { | |
2501 | gv_efullname3(dbsv, gv, Nullch); | |
2502 | } | |
3de9ffa1 MB |
2503 | } |
2504 | else { | |
155aba94 GS |
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 NIS |
2512 | PL_curcopdb = PL_curcop; |
2513 | cv = GvCV(PL_DBsub); | |
3de9ffa1 MB |
2514 | return cv; |
2515 | } | |
2516 | ||
a0d0e21e LW |
2517 | PP(pp_entersub) |
2518 | { | |
39644a26 | 2519 | dSP; dPOPss; |
a0d0e21e LW |
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 LW |
2526 | |
2527 | if (!sv) | |
cea2e8a9 | 2528 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e | 2529 | switch (SvTYPE(sv)) { |
f1025168 NC |
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 LW |
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 CS |
2550 | if (SvGMAGICAL(sv)) { |
2551 | mg_get(sv); | |
f5f1d18e AMS |
2552 | if (SvROK(sv)) |
2553 | goto got_rv; | |
15ff848f CS |
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 LW |
2563 | break; |
2564 | } | |
f5f1d18e | 2565 | got_rv: |
f5284f61 IZ |
2566 | { |
2567 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ | |
2568 | tryAMAGICunDEREF(to_cv); | |
2569 | } | |
a0d0e21e LW |
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 LW |
2578 | case SVt_PVCV: |
2579 | cv = (CV*)sv; | |
2580 | break; | |
a0d0e21e LW |
2581 | } |
2582 | ||
2583 | ENTER; | |
2584 | SAVETMPS; | |
2585 | ||
2586 | retry: | |
a0d0e21e | 2587 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
f1025168 | 2588 | goto fooey; |
a0d0e21e LW |
2589 | } |
2590 | ||
54310121 | 2591 | gimme = GIMME_V; |
67caa1fe | 2592 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
06492da6 SF |
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 NC |
2601 | if (!(CvXSUB(cv))) { |
2602 | /* This path taken at least 75% of the time */ | |
a0d0e21e LW |
2603 | dMARK; |
2604 | register I32 items = SP - MARK; | |
a0d0e21e | 2605 | AV* padlist = CvPADLIST(cv); |
533c011a | 2606 | push_return(PL_op->op_next); |
a0d0e21e LW |
2607 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2608 | PUSHSUB(cx); | |
2609 | CvDEPTH(cv)++; | |
6b35e009 GS |
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 DM |
2612 | * Owing the speed considerations, we choose instead to search for |
2613 | * the cv using find_runcv() when calling doeval(). | |
6b35e009 | 2614 | */ |
a0d0e21e LW |
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 MB |
2623 | { |
2624 | AV* av; | |
a0d0e21e LW |
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 GS |
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 NIS |
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 LW |
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 LW |
2661 | while (items--) { |
2662 | if (*MARK) | |
2663 | SvTEMP_off(*MARK); | |
2664 | MARK++; | |
2665 | } | |
2666 | } | |
4a925ff6 GS |
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 LW |
2678 | RETURNOP(CvSTART(cv)); |
2679 | } | |
f1025168 NC |
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 NC |
2773 | } |
2774 | } | |
2775 | if (!cv) | |
2776 | DIE(aTHX_ "Not a CODE reference"); | |
2777 | goto retry; | |
2778 | } | |
a0d0e21e LW |
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 NC |
2789 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
2790 | tmpstr); | |
44a8e56a | 2791 | } |
2792 | } | |
2793 | ||
a0d0e21e LW |
2794 | PP(pp_aelem) |
2795 | { | |
39644a26 | 2796 | dSP; |
a0d0e21e | 2797 | SV** svp; |
d804643f SC |
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 LW |
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 NIS |
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 GS |
2833 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2834 | sv = sv_mortalcopy(sv); | |
2835 | PUSHs(sv); | |
a0d0e21e LW |
2836 | RETURN; |
2837 | } | |
2838 | ||
02a9e968 | 2839 | void |
864dbfa3 | 2840 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 CS |
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 CS |
2865 | SvROK_on(sv); |
2866 | SvSETMAGIC(sv); | |
2867 | } | |
2868 | } | |
2869 | ||
a0d0e21e LW |
2870 | PP(pp_method) |
2871 | { | |
39644a26 | 2872 | dSP; |
f5d5a27c CS |
2873 | SV* sv = TOPs; |
2874 | ||
2875 | if (SvROK(sv)) { | |
eda383f2 | 2876 | SV* rsv = SvRV(sv); |
f5d5a27c CS |
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 CS |
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 LW |
2900 | SV* sv; |
2901 | SV* ob; | |
2902 | GV* gv; | |
56304f61 CS |
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 SC |
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 LW |
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 LW |
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 LW |
2934 | : !isIDFIRST(*packname) |
2935 | )) | |
2936 | { | |
f5d5a27c CS |
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 IK |
2941 | /* assume it's a package name */ |
2942 | stash = gv_stashpvn(packname, packlen, FALSE); | |
0dae17bd GS |
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 LW |
2949 | } |
2950 | ||
af09ea45 | 2951 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 GS |
2952 | if (!ob || !(SvOBJECT(ob) |
2953 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) | |
2954 | && SvOBJECT(ob)))) | |
2955 | { | |
f5d5a27c CS |
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 IK |
2963 | /* NOTE: stash may be null, hope hv_fetch_ent and |
2964 | gv_fetchmethod can cope (it seems they can) */ | |
2965 | ||
f5d5a27c CS |
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 IK |
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 CS |
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 IK |
2998 | /* the method name is unqualified or starts with SUPER:: */ |
2999 | packname = sep ? CopSTASHPV(PL_curcop) : | |
3000 | stash ? HvNAME(stash) : packname; | |
56304f61 CS |
3001 | packlen = strlen(packname); |
3002 | } | |
3003 | else { | |
af09ea45 | 3004 | /* the method name is qualified */ |
56304f61 CS |
3005 | packname = name; |
3006 | packlen = sep - name; | |
3007 | } | |
af09ea45 IK |
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 IK |
3012 | "Can't locate object method \"%s\" via package \"%.*s\"", |
3013 | leaf, (int)packlen, packname); | |
c1899e02 GS |
3014 | } |
3015 | else { | |
3016 | Perl_croak(aTHX_ | |
af09ea45 IK |
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 | } |