Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
4bb101f2 JH |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4 | * 2000, 2001, 2002, 2003, by Larry Wall and others | |
a0d0e21e LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
9 | */ | |
10 | ||
11 | /* | |
12 | * Then he heard Merry change the note, and up went the Horn-cry of Buckland, | |
13 | * shaking the air. | |
14 | * | |
15 | * Awake! Awake! Fear, Fire, Foes! Awake! | |
16 | * Fire, Foes! Awake! | |
17 | */ | |
18 | ||
19 | #include "EXTERN.h" | |
864dbfa3 | 20 | #define PERL_IN_PP_HOT_C |
a0d0e21e LW |
21 | #include "perl.h" |
22 | ||
23 | /* Hot code. */ | |
24 | ||
25 | PP(pp_const) | |
26 | { | |
39644a26 | 27 | dSP; |
1d7c1841 | 28 | XPUSHs(cSVOP_sv); |
a0d0e21e LW |
29 | RETURN; |
30 | } | |
31 | ||
32 | PP(pp_nextstate) | |
33 | { | |
533c011a | 34 | PL_curcop = (COP*)PL_op; |
a0d0e21e | 35 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 36 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e LW |
37 | FREETMPS; |
38 | return NORMAL; | |
39 | } | |
40 | ||
41 | PP(pp_gvsv) | |
42 | { | |
39644a26 | 43 | dSP; |
924508f0 | 44 | EXTEND(SP,1); |
533c011a | 45 | if (PL_op->op_private & OPpLVAL_INTRO) |
1d7c1841 | 46 | PUSHs(save_scalar(cGVOP_gv)); |
a0d0e21e | 47 | else |
1d7c1841 | 48 | PUSHs(GvSV(cGVOP_gv)); |
a0d0e21e LW |
49 | RETURN; |
50 | } | |
51 | ||
52 | PP(pp_null) | |
53 | { | |
54 | return NORMAL; | |
55 | } | |
56 | ||
7399586d HS |
57 | PP(pp_setstate) |
58 | { | |
59 | PL_curcop = (COP*)PL_op; | |
60 | return NORMAL; | |
61 | } | |
62 | ||
a0d0e21e LW |
63 | PP(pp_pushmark) |
64 | { | |
3280af22 | 65 | PUSHMARK(PL_stack_sp); |
a0d0e21e LW |
66 | return NORMAL; |
67 | } | |
68 | ||
69 | PP(pp_stringify) | |
70 | { | |
39644a26 | 71 | dSP; dTARGET; |
6050d10e | 72 | sv_copypv(TARG,TOPs); |
a0d0e21e LW |
73 | SETTARG; |
74 | RETURN; | |
75 | } | |
76 | ||
77 | PP(pp_gv) | |
78 | { | |
39644a26 | 79 | dSP; |
1d7c1841 | 80 | XPUSHs((SV*)cGVOP_gv); |
a0d0e21e LW |
81 | RETURN; |
82 | } | |
83 | ||
84 | PP(pp_and) | |
85 | { | |
39644a26 | 86 | dSP; |
a0d0e21e LW |
87 | if (!SvTRUE(TOPs)) |
88 | RETURN; | |
89 | else { | |
90 | --SP; | |
91 | RETURNOP(cLOGOP->op_other); | |
92 | } | |
93 | } | |
94 | ||
95 | PP(pp_sassign) | |
96 | { | |
39644a26 | 97 | dSP; dPOPTOPssrl; |
748a9306 | 98 | |
533c011a | 99 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
a0d0e21e LW |
100 | SV *temp; |
101 | temp = left; left = right; right = temp; | |
102 | } | |
3280af22 | 103 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e | 104 | TAINT_NOT; |
54310121 | 105 | SvSetMagicSV(right, left); |
a0d0e21e LW |
106 | SETs(right); |
107 | RETURN; | |
108 | } | |
109 | ||
110 | PP(pp_cond_expr) | |
111 | { | |
39644a26 | 112 | dSP; |
a0d0e21e | 113 | if (SvTRUEx(POPs)) |
1a67a97c | 114 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 115 | else |
1a67a97c | 116 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
117 | } |
118 | ||
119 | PP(pp_unstack) | |
120 | { | |
121 | I32 oldsave; | |
122 | TAINT_NOT; /* Each statement is presumed innocent */ | |
3280af22 | 123 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 124 | FREETMPS; |
3280af22 | 125 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
126 | LEAVE_SCOPE(oldsave); |
127 | return NORMAL; | |
128 | } | |
129 | ||
a0d0e21e LW |
130 | PP(pp_concat) |
131 | { | |
39644a26 | 132 | dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 LW |
133 | { |
134 | dPOPTOPssrl; | |
8d6d96c1 HS |
135 | STRLEN llen; |
136 | char* lpv; | |
137 | bool lbyte; | |
138 | STRLEN rlen; | |
139 | char* rpv = SvPV(right, rlen); /* mg_get(right) happens here */ | |
db79b45b | 140 | bool rbyte = !SvUTF8(right), rcopied = FALSE; |
8d6d96c1 HS |
141 | |
142 | if (TARG == right && right != left) { | |
143 | right = sv_2mortal(newSVpvn(rpv, rlen)); | |
1e54db1a | 144 | rpv = SvPV(right, rlen); /* no point setting UTF-8 here */ |
db79b45b | 145 | rcopied = TRUE; |
8d6d96c1 | 146 | } |
7889fe52 | 147 | |
8d6d96c1 HS |
148 | if (TARG != left) { |
149 | lpv = SvPV(left, llen); /* mg_get(left) may happen here */ | |
150 | lbyte = !SvUTF8(left); | |
151 | sv_setpvn(TARG, lpv, llen); | |
152 | if (!lbyte) | |
153 | SvUTF8_on(TARG); | |
154 | else | |
155 | SvUTF8_off(TARG); | |
156 | } | |
157 | else { /* TARG == left */ | |
158 | if (SvGMAGICAL(left)) | |
159 | mg_get(left); /* or mg_get(left) may happen here */ | |
160 | if (!SvOK(TARG)) | |
161 | sv_setpv(left, ""); | |
162 | lpv = SvPV_nomg(left, llen); | |
163 | lbyte = !SvUTF8(left); | |
164 | } | |
a12c0f56 | 165 | |
fd15e783 PN |
166 | #if defined(PERL_Y2KWARN) |
167 | if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K) && SvOK(TARG)) { | |
8d6d96c1 HS |
168 | if (llen >= 2 && lpv[llen - 2] == '1' && lpv[llen - 1] == '9' |
169 | && (llen == 2 || !isDIGIT(lpv[llen - 3]))) | |
170 | { | |
9014280d | 171 | Perl_warner(aTHX_ packWARN(WARN_Y2K), "Possible Y2K bug: %s", |
8d6d96c1 HS |
172 | "about to append an integer to '19'"); |
173 | } | |
fd15e783 PN |
174 | } |
175 | #endif | |
176 | ||
8d6d96c1 HS |
177 | if (lbyte != rbyte) { |
178 | if (lbyte) | |
179 | sv_utf8_upgrade_nomg(TARG); | |
180 | else { | |
db79b45b JH |
181 | if (!rcopied) |
182 | right = sv_2mortal(newSVpvn(rpv, rlen)); | |
8d6d96c1 HS |
183 | sv_utf8_upgrade_nomg(right); |
184 | rpv = SvPV(right, rlen); | |
69b47968 | 185 | } |
a0d0e21e | 186 | } |
8d6d96c1 | 187 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 188 | |
a0d0e21e LW |
189 | SETTARG; |
190 | RETURN; | |
748a9306 | 191 | } |
a0d0e21e LW |
192 | } |
193 | ||
194 | PP(pp_padsv) | |
195 | { | |
39644a26 | 196 | dSP; dTARGET; |
a0d0e21e | 197 | XPUSHs(TARG); |
533c011a NIS |
198 | if (PL_op->op_flags & OPf_MOD) { |
199 | if (PL_op->op_private & OPpLVAL_INTRO) | |
dd2155a4 | 200 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); |
533c011a | 201 | else if (PL_op->op_private & OPpDEREF) { |
8ec5e241 | 202 | PUTBACK; |
dd2155a4 | 203 | vivify_ref(PAD_SVl(PL_op->op_targ), PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
204 | SPAGAIN; |
205 | } | |
4633a7c4 | 206 | } |
a0d0e21e LW |
207 | RETURN; |
208 | } | |
209 | ||
210 | PP(pp_readline) | |
211 | { | |
f5284f61 | 212 | tryAMAGICunTARGET(iter, 0); |
3280af22 | 213 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 | 214 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f | 215 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 | 216 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 | 217 | else { |
f5284f61 IZ |
218 | dSP; |
219 | XPUSHs((SV*)PL_last_in_gv); | |
220 | PUTBACK; | |
cea2e8a9 | 221 | pp_rv2gv(); |
f5284f61 | 222 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 IZ |
223 | } |
224 | } | |
a0d0e21e LW |
225 | return do_readline(); |
226 | } | |
227 | ||
228 | PP(pp_eq) | |
229 | { | |
39644a26 | 230 | dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f AS |
231 | #ifndef NV_PRESERVES_UV |
232 | if (SvROK(TOPs) && SvROK(TOPm1s)) { | |
e61d22ef NC |
233 | SP--; |
234 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); | |
4c9fe80f AS |
235 | RETURN; |
236 | } | |
237 | #endif | |
28e5dec8 JH |
238 | #ifdef PERL_PRESERVE_IVUV |
239 | SvIV_please(TOPs); | |
240 | if (SvIOK(TOPs)) { | |
4c9fe80f AS |
241 | /* Unless the left argument is integer in range we are going |
242 | to have to use NV maths. Hence only attempt to coerce the | |
243 | right argument if we know the left is integer. */ | |
28e5dec8 JH |
244 | SvIV_please(TOPm1s); |
245 | if (SvIOK(TOPm1s)) { | |
246 | bool auvok = SvUOK(TOPm1s); | |
247 | bool buvok = SvUOK(TOPs); | |
a12c0f56 | 248 | |
1605159e NC |
249 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
250 | /* Casting IV to UV before comparison isn't going to matter | |
251 | on 2s complement. On 1s complement or sign&magnitude | |
252 | (if we have any of them) it could to make negative zero | |
253 | differ from normal zero. As I understand it. (Need to | |
254 | check - is negative zero implementation defined behaviour | |
255 | anyway?). NWC */ | |
256 | UV buv = SvUVX(POPs); | |
257 | UV auv = SvUVX(TOPs); | |
28e5dec8 | 258 | |
28e5dec8 JH |
259 | SETs(boolSV(auv == buv)); |
260 | RETURN; | |
261 | } | |
262 | { /* ## Mixed IV,UV ## */ | |
1605159e | 263 | SV *ivp, *uvp; |
28e5dec8 | 264 | IV iv; |
28e5dec8 | 265 | |
1605159e | 266 | /* == is commutative so doesn't matter which is left or right */ |
28e5dec8 | 267 | if (auvok) { |
1605159e NC |
268 | /* top of stack (b) is the iv */ |
269 | ivp = *SP; | |
270 | uvp = *--SP; | |
271 | } else { | |
272 | uvp = *SP; | |
273 | ivp = *--SP; | |
274 | } | |
275 | iv = SvIVX(ivp); | |
276 | if (iv < 0) { | |
277 | /* As uv is a UV, it's >0, so it cannot be == */ | |
278 | SETs(&PL_sv_no); | |
279 | RETURN; | |
280 | } | |
28e5dec8 | 281 | /* we know iv is >= 0 */ |
1605159e | 282 | SETs(boolSV((UV)iv == SvUVX(uvp))); |
28e5dec8 JH |
283 | RETURN; |
284 | } | |
285 | } | |
286 | } | |
287 | #endif | |
a0d0e21e LW |
288 | { |
289 | dPOPnv; | |
54310121 | 290 | SETs(boolSV(TOPn == value)); |
a0d0e21e LW |
291 | RETURN; |
292 | } | |
293 | } | |
294 | ||
295 | PP(pp_preinc) | |
296 | { | |
39644a26 | 297 | dSP; |
f39684df | 298 | if (SvTYPE(TOPs) >= SVt_PVGV && SvTYPE(TOPs) != SVt_PVLV) |
d470f89e | 299 | DIE(aTHX_ PL_no_modify); |
3510b4a1 NC |
300 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
301 | && SvIVX(TOPs) != IV_MAX) | |
55497cff | 302 | { |
748a9306 | 303 | ++SvIVX(TOPs); |
55497cff | 304 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 305 | } |
28e5dec8 | 306 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 | 307 | sv_inc(TOPs); |
a0d0e21e LW |
308 | SvSETMAGIC(TOPs); |
309 | return NORMAL; | |
310 | } | |
311 | ||
312 | PP(pp_or) | |
313 | { | |
39644a26 | 314 | dSP; |
a0d0e21e LW |
315 | if (SvTRUE(TOPs)) |
316 | RETURN; | |
317 | else { | |
318 | --SP; | |
319 | RETURNOP(cLOGOP->op_other); | |
320 | } | |
321 | } | |
322 | ||
c963b151 BD |
323 | PP(pp_dor) |
324 | { | |
325 | /* Most of this is lifted straight from pp_defined */ | |
326 | dSP; | |
327 | register SV* sv; | |
328 | ||
329 | sv = TOPs; | |
330 | if (!sv || !SvANY(sv)) { | |
331 | --SP; | |
332 | RETURNOP(cLOGOP->op_other); | |
333 | } | |
334 | ||
335 | switch (SvTYPE(sv)) { | |
336 | case SVt_PVAV: | |
337 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
338 | RETURN; | |
339 | break; | |
340 | case SVt_PVHV: | |
341 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
342 | RETURN; | |
343 | break; | |
344 | case SVt_PVCV: | |
345 | if (CvROOT(sv) || CvXSUB(sv)) | |
346 | RETURN; | |
347 | break; | |
348 | default: | |
349 | if (SvGMAGICAL(sv)) | |
350 | mg_get(sv); | |
351 | if (SvOK(sv)) | |
352 | RETURN; | |
353 | } | |
354 | ||
355 | --SP; | |
356 | RETURNOP(cLOGOP->op_other); | |
357 | } | |
358 | ||
a0d0e21e LW |
359 | PP(pp_add) |
360 | { | |
39644a26 | 361 | dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 JH |
362 | useleft = USE_LEFT(TOPm1s); |
363 | #ifdef PERL_PRESERVE_IVUV | |
364 | /* We must see if we can perform the addition with integers if possible, | |
365 | as the integer code detects overflow while the NV code doesn't. | |
366 | If either argument hasn't had a numeric conversion yet attempt to get | |
367 | the IV. It's important to do this now, rather than just assuming that | |
368 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
369 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
370 | integer in case the second argument is IV=9223372036854775806 | |
371 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
372 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
373 | ||
374 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
375 | fp maths for integer values. |
376 | ||
a00b5bd3 | 377 | How to detect overflow? |
7dca457a NC |
378 | |
379 | C 99 section 6.2.6.1 says | |
380 | ||
381 | The range of nonnegative values of a signed integer type is a subrange | |
382 | of the corresponding unsigned integer type, and the representation of | |
383 | the same value in each type is the same. A computation involving | |
384 | unsigned operands can never overflow, because a result that cannot be | |
385 | represented by the resulting unsigned integer type is reduced modulo | |
386 | the number that is one greater than the largest value that can be | |
387 | represented by the resulting type. | |
388 | ||
389 | (the 9th paragraph) | |
390 | ||
391 | which I read as "unsigned ints wrap." | |
392 | ||
393 | signed integer overflow seems to be classed as "exception condition" | |
394 | ||
395 | If an exceptional condition occurs during the evaluation of an | |
396 | expression (that is, if the result is not mathematically defined or not | |
397 | in the range of representable values for its type), the behavior is | |
398 | undefined. | |
399 | ||
400 | (6.5, the 5th paragraph) | |
401 | ||
402 | I had assumed that on 2s complement machines signed arithmetic would | |
403 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
404 | everything perl builds on would be happy. After much wailing and | |
405 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
406 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
407 | unsigned code below is actually shorter than the old code. :-) | |
408 | */ | |
409 | ||
28e5dec8 JH |
410 | SvIV_please(TOPs); |
411 | if (SvIOK(TOPs)) { | |
412 | /* Unless the left argument is integer in range we are going to have to | |
413 | use NV maths. Hence only attempt to coerce the right argument if | |
414 | we know the left is integer. */ | |
9c5ffd7c JH |
415 | register UV auv = 0; |
416 | bool auvok = FALSE; | |
7dca457a NC |
417 | bool a_valid = 0; |
418 | ||
28e5dec8 | 419 | if (!useleft) { |
7dca457a NC |
420 | auv = 0; |
421 | a_valid = auvok = 1; | |
422 | /* left operand is undef, treat as zero. + 0 is identity, | |
423 | Could SETi or SETu right now, but space optimise by not adding | |
424 | lots of code to speed up what is probably a rarish case. */ | |
425 | } else { | |
426 | /* Left operand is defined, so is it IV? */ | |
427 | SvIV_please(TOPm1s); | |
428 | if (SvIOK(TOPm1s)) { | |
429 | if ((auvok = SvUOK(TOPm1s))) | |
430 | auv = SvUVX(TOPm1s); | |
431 | else { | |
432 | register IV aiv = SvIVX(TOPm1s); | |
433 | if (aiv >= 0) { | |
434 | auv = aiv; | |
435 | auvok = 1; /* Now acting as a sign flag. */ | |
436 | } else { /* 2s complement assumption for IV_MIN */ | |
437 | auv = (UV)-aiv; | |
438 | } | |
439 | } | |
440 | a_valid = 1; | |
28e5dec8 JH |
441 | } |
442 | } | |
7dca457a NC |
443 | if (a_valid) { |
444 | bool result_good = 0; | |
445 | UV result; | |
446 | register UV buv; | |
28e5dec8 | 447 | bool buvok = SvUOK(TOPs); |
a00b5bd3 | 448 | |
7dca457a NC |
449 | if (buvok) |
450 | buv = SvUVX(TOPs); | |
451 | else { | |
452 | register IV biv = SvIVX(TOPs); | |
453 | if (biv >= 0) { | |
454 | buv = biv; | |
455 | buvok = 1; | |
456 | } else | |
457 | buv = (UV)-biv; | |
458 | } | |
459 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 460 | else "IV" now, independent of how it came in. |
7dca457a NC |
461 | if a, b represents positive, A, B negative, a maps to -A etc |
462 | a + b => (a + b) | |
463 | A + b => -(a - b) | |
464 | a + B => (a - b) | |
465 | A + B => -(a + b) | |
466 | all UV maths. negate result if A negative. | |
467 | add if signs same, subtract if signs differ. */ | |
468 | ||
469 | if (auvok ^ buvok) { | |
470 | /* Signs differ. */ | |
471 | if (auv >= buv) { | |
472 | result = auv - buv; | |
473 | /* Must get smaller */ | |
474 | if (result <= auv) | |
475 | result_good = 1; | |
476 | } else { | |
477 | result = buv - auv; | |
478 | if (result <= buv) { | |
479 | /* result really should be -(auv-buv). as its negation | |
480 | of true value, need to swap our result flag */ | |
481 | auvok = !auvok; | |
482 | result_good = 1; | |
28e5dec8 JH |
483 | } |
484 | } | |
7dca457a NC |
485 | } else { |
486 | /* Signs same */ | |
487 | result = auv + buv; | |
488 | if (result >= auv) | |
489 | result_good = 1; | |
490 | } | |
491 | if (result_good) { | |
492 | SP--; | |
493 | if (auvok) | |
28e5dec8 | 494 | SETu( result ); |
7dca457a NC |
495 | else { |
496 | /* Negate result */ | |
497 | if (result <= (UV)IV_MIN) | |
498 | SETi( -(IV)result ); | |
499 | else { | |
500 | /* result valid, but out of range for IV. */ | |
501 | SETn( -(NV)result ); | |
28e5dec8 JH |
502 | } |
503 | } | |
7dca457a NC |
504 | RETURN; |
505 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
506 | } |
507 | } | |
508 | #endif | |
a0d0e21e | 509 | { |
28e5dec8 JH |
510 | dPOPnv; |
511 | if (!useleft) { | |
512 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
513 | SETn(value); | |
514 | RETURN; | |
515 | } | |
516 | SETn( value + TOPn ); | |
517 | RETURN; | |
a0d0e21e LW |
518 | } |
519 | } | |
520 | ||
521 | PP(pp_aelemfast) | |
522 | { | |
39644a26 | 523 | dSP; |
1d7c1841 | 524 | AV *av = GvAV(cGVOP_gv); |
533c011a NIS |
525 | U32 lval = PL_op->op_flags & OPf_MOD; |
526 | SV** svp = av_fetch(av, PL_op->op_private, lval); | |
3280af22 | 527 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 528 | EXTEND(SP, 1); |
be6c24e0 GS |
529 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
530 | sv = sv_mortalcopy(sv); | |
531 | PUSHs(sv); | |
a0d0e21e LW |
532 | RETURN; |
533 | } | |
534 | ||
535 | PP(pp_join) | |
536 | { | |
39644a26 | 537 | dSP; dMARK; dTARGET; |
a0d0e21e LW |
538 | MARK++; |
539 | do_join(TARG, *MARK, MARK, SP); | |
540 | SP = MARK; | |
541 | SETs(TARG); | |
542 | RETURN; | |
543 | } | |
544 | ||
545 | PP(pp_pushre) | |
546 | { | |
39644a26 | 547 | dSP; |
44a8e56a | 548 | #ifdef DEBUGGING |
549 | /* | |
550 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
551 | * will be enough to hold an OP*. | |
552 | */ | |
553 | SV* sv = sv_newmortal(); | |
554 | sv_upgrade(sv, SVt_PVLV); | |
555 | LvTYPE(sv) = '/'; | |
533c011a | 556 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 557 | XPUSHs(sv); |
558 | #else | |
6b88bc9c | 559 | XPUSHs((SV*)PL_op); |
44a8e56a | 560 | #endif |
a0d0e21e LW |
561 | RETURN; |
562 | } | |
563 | ||
564 | /* Oversized hot code. */ | |
565 | ||
566 | PP(pp_print) | |
567 | { | |
39644a26 | 568 | dSP; dMARK; dORIGMARK; |
a0d0e21e LW |
569 | GV *gv; |
570 | IO *io; | |
760ac839 | 571 | register PerlIO *fp; |
236988e4 | 572 | MAGIC *mg; |
a0d0e21e | 573 | |
533c011a | 574 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
575 | gv = (GV*)*++MARK; |
576 | else | |
3280af22 | 577 | gv = PL_defoutgv; |
5b468f54 AMS |
578 | |
579 | if (gv && (io = GvIO(gv)) | |
580 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
581 | { | |
01bb7c6d | 582 | had_magic: |
68dc0745 | 583 | if (MARK == ORIGMARK) { |
1c846c1f | 584 | /* If using default handle then we need to make space to |
a60c0954 NIS |
585 | * pass object as 1st arg, so move other args up ... |
586 | */ | |
4352c267 | 587 | MEXTEND(SP, 1); |
68dc0745 | 588 | ++MARK; |
589 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
590 | ++SP; | |
591 | } | |
592 | PUSHMARK(MARK - 1); | |
5b468f54 | 593 | *MARK = SvTIED_obj((SV*)io, mg); |
68dc0745 | 594 | PUTBACK; |
236988e4 | 595 | ENTER; |
864dbfa3 | 596 | call_method("PRINT", G_SCALAR); |
236988e4 | 597 | LEAVE; |
598 | SPAGAIN; | |
68dc0745 | 599 | MARK = ORIGMARK + 1; |
600 | *MARK = *SP; | |
601 | SP = MARK; | |
236988e4 | 602 | RETURN; |
603 | } | |
a0d0e21e | 604 | if (!(io = GvIO(gv))) { |
5b468f54 AMS |
605 | if ((GvEGV(gv)) && (io = GvIO(GvEGV(gv))) |
606 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
01bb7c6d | 607 | goto had_magic; |
2dd78f96 JH |
608 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
609 | report_evil_fh(gv, io, PL_op->op_type); | |
93189314 | 610 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
611 | goto just_say_no; |
612 | } | |
613 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 614 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 NC |
615 | if (IoIFP(io)) |
616 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); | |
2dd78f96 | 617 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f | 618 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e | 619 | } |
93189314 | 620 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e LW |
621 | goto just_say_no; |
622 | } | |
623 | else { | |
624 | MARK++; | |
7889fe52 | 625 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e LW |
626 | while (MARK <= SP) { |
627 | if (!do_print(*MARK, fp)) | |
628 | break; | |
629 | MARK++; | |
630 | if (MARK <= SP) { | |
7889fe52 | 631 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e LW |
632 | MARK--; |
633 | break; | |
634 | } | |
635 | } | |
636 | } | |
637 | } | |
638 | else { | |
639 | while (MARK <= SP) { | |
640 | if (!do_print(*MARK, fp)) | |
641 | break; | |
642 | MARK++; | |
643 | } | |
644 | } | |
645 | if (MARK <= SP) | |
646 | goto just_say_no; | |
647 | else { | |
7889fe52 NIS |
648 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
649 | if (!do_print(PL_ors_sv, fp)) /* $\ */ | |
a0d0e21e LW |
650 | goto just_say_no; |
651 | ||
652 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 653 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
654 | goto just_say_no; |
655 | } | |
656 | } | |
657 | SP = ORIGMARK; | |
3280af22 | 658 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
659 | RETURN; |
660 | ||
661 | just_say_no: | |
662 | SP = ORIGMARK; | |
3280af22 | 663 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
664 | RETURN; |
665 | } | |
666 | ||
667 | PP(pp_rv2av) | |
668 | { | |
39644a26 | 669 | dSP; dTOPss; |
a0d0e21e LW |
670 | AV *av; |
671 | ||
672 | if (SvROK(sv)) { | |
673 | wasref: | |
f5284f61 IZ |
674 | tryAMAGICunDEREF(to_av); |
675 | ||
a0d0e21e LW |
676 | av = (AV*)SvRV(sv); |
677 | if (SvTYPE(av) != SVt_PVAV) | |
cea2e8a9 | 678 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a | 679 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 680 | SETs((SV*)av); |
a0d0e21e LW |
681 | RETURN; |
682 | } | |
78f9721b SM |
683 | else if (LVRET) { |
684 | if (GIMME == G_SCALAR) | |
685 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); | |
686 | SETs((SV*)av); | |
687 | RETURN; | |
688 | } | |
82d03984 RGS |
689 | else if (PL_op->op_flags & OPf_MOD |
690 | && PL_op->op_private & OPpLVAL_INTRO) | |
691 | Perl_croak(aTHX_ PL_no_localize_ref); | |
a0d0e21e LW |
692 | } |
693 | else { | |
694 | if (SvTYPE(sv) == SVt_PVAV) { | |
695 | av = (AV*)sv; | |
533c011a | 696 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 697 | SETs((SV*)av); |
a0d0e21e LW |
698 | RETURN; |
699 | } | |
78f9721b SM |
700 | else if (LVRET) { |
701 | if (GIMME == G_SCALAR) | |
702 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
703 | " scalar context"); | |
704 | SETs((SV*)av); | |
705 | RETURN; | |
706 | } | |
a0d0e21e LW |
707 | } |
708 | else { | |
67955e0c | 709 | GV *gv; |
1c846c1f | 710 | |
a0d0e21e | 711 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 712 | char *sym; |
c9d5ac95 | 713 | STRLEN len; |
748a9306 | 714 | |
a0d0e21e LW |
715 | if (SvGMAGICAL(sv)) { |
716 | mg_get(sv); | |
717 | if (SvROK(sv)) | |
718 | goto wasref; | |
719 | } | |
720 | if (!SvOK(sv)) { | |
533c011a NIS |
721 | if (PL_op->op_flags & OPf_REF || |
722 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 723 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 | 724 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 725 | report_uninit(); |
f5284f61 | 726 | if (GIMME == G_ARRAY) { |
c2444246 | 727 | (void)POPs; |
4633a7c4 | 728 | RETURN; |
f5284f61 IZ |
729 | } |
730 | RETSETUNDEF; | |
a0d0e21e | 731 | } |
c9d5ac95 | 732 | sym = SvPV(sv,len); |
35cd451c GS |
733 | if ((PL_op->op_flags & OPf_SPECIAL) && |
734 | !(PL_op->op_flags & OPf_MOD)) | |
735 | { | |
736 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV); | |
c9d5ac95 GS |
737 | if (!gv |
738 | && (!is_gv_magical(sym,len,0) | |
739 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV)))) | |
740 | { | |
35cd451c | 741 | RETSETUNDEF; |
c9d5ac95 | 742 | } |
35cd451c GS |
743 | } |
744 | else { | |
745 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 746 | DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); |
35cd451c GS |
747 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
748 | } | |
749 | } | |
750 | else { | |
67955e0c | 751 | gv = (GV*)sv; |
a0d0e21e | 752 | } |
67955e0c | 753 | av = GvAVn(gv); |
533c011a | 754 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 755 | av = save_ary(gv); |
533c011a | 756 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 757 | SETs((SV*)av); |
a0d0e21e LW |
758 | RETURN; |
759 | } | |
78f9721b SM |
760 | else if (LVRET) { |
761 | if (GIMME == G_SCALAR) | |
762 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
763 | " scalar context"); | |
764 | SETs((SV*)av); | |
765 | RETURN; | |
766 | } | |
a0d0e21e LW |
767 | } |
768 | } | |
769 | ||
770 | if (GIMME == G_ARRAY) { | |
771 | I32 maxarg = AvFILL(av) + 1; | |
c2444246 | 772 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f | 773 | EXTEND(SP, maxarg); |
93965878 | 774 | if (SvRMAGICAL(av)) { |
1c846c1f | 775 | U32 i; |
eb160463 | 776 | for (i=0; i < (U32)maxarg; i++) { |
93965878 | 777 | SV **svp = av_fetch(av, i, FALSE); |
3280af22 | 778 | SP[i+1] = (svp) ? *svp : &PL_sv_undef; |
93965878 | 779 | } |
1c846c1f | 780 | } |
93965878 NIS |
781 | else { |
782 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
783 | } | |
a0d0e21e LW |
784 | SP += maxarg; |
785 | } | |
c754c3d7 | 786 | else if (GIMME_V == G_SCALAR) { |
a0d0e21e LW |
787 | dTARGET; |
788 | I32 maxarg = AvFILL(av) + 1; | |
f5284f61 | 789 | SETi(maxarg); |
a0d0e21e LW |
790 | } |
791 | RETURN; | |
792 | } | |
793 | ||
794 | PP(pp_rv2hv) | |
795 | { | |
39644a26 | 796 | dSP; dTOPss; |
a0d0e21e | 797 | HV *hv; |
be85d344 | 798 | I32 gimme = GIMME_V; |
a0d0e21e LW |
799 | |
800 | if (SvROK(sv)) { | |
801 | wasref: | |
f5284f61 IZ |
802 | tryAMAGICunDEREF(to_hv); |
803 | ||
a0d0e21e | 804 | hv = (HV*)SvRV(sv); |
6d822dc4 | 805 | if (SvTYPE(hv) != SVt_PVHV) |
cea2e8a9 | 806 | DIE(aTHX_ "Not a HASH reference"); |
533c011a | 807 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
808 | SETs((SV*)hv); |
809 | RETURN; | |
810 | } | |
78f9721b | 811 | else if (LVRET) { |
be85d344 | 812 | if (gimme != G_ARRAY) |
78f9721b SM |
813 | Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); |
814 | SETs((SV*)hv); | |
815 | RETURN; | |
816 | } | |
82d03984 RGS |
817 | else if (PL_op->op_flags & OPf_MOD |
818 | && PL_op->op_private & OPpLVAL_INTRO) | |
819 | Perl_croak(aTHX_ PL_no_localize_ref); | |
a0d0e21e LW |
820 | } |
821 | else { | |
6d822dc4 | 822 | if (SvTYPE(sv) == SVt_PVHV) { |
a0d0e21e | 823 | hv = (HV*)sv; |
533c011a | 824 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
825 | SETs((SV*)hv); |
826 | RETURN; | |
827 | } | |
78f9721b | 828 | else if (LVRET) { |
be85d344 | 829 | if (gimme != G_ARRAY) |
78f9721b SM |
830 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
831 | " scalar context"); | |
832 | SETs((SV*)hv); | |
833 | RETURN; | |
834 | } | |
a0d0e21e LW |
835 | } |
836 | else { | |
67955e0c | 837 | GV *gv; |
1c846c1f | 838 | |
a0d0e21e | 839 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 840 | char *sym; |
c9d5ac95 | 841 | STRLEN len; |
748a9306 | 842 | |
a0d0e21e LW |
843 | if (SvGMAGICAL(sv)) { |
844 | mg_get(sv); | |
845 | if (SvROK(sv)) | |
846 | goto wasref; | |
847 | } | |
848 | if (!SvOK(sv)) { | |
533c011a NIS |
849 | if (PL_op->op_flags & OPf_REF || |
850 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 851 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 | 852 | if (ckWARN(WARN_UNINITIALIZED)) |
1d7c1841 | 853 | report_uninit(); |
be85d344 | 854 | if (gimme == G_ARRAY) { |
4633a7c4 LW |
855 | SP--; |
856 | RETURN; | |
857 | } | |
a0d0e21e LW |
858 | RETSETUNDEF; |
859 | } | |
c9d5ac95 | 860 | sym = SvPV(sv,len); |
35cd451c GS |
861 | if ((PL_op->op_flags & OPf_SPECIAL) && |
862 | !(PL_op->op_flags & OPf_MOD)) | |
863 | { | |
864 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV); | |
c9d5ac95 GS |
865 | if (!gv |
866 | && (!is_gv_magical(sym,len,0) | |
867 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV)))) | |
868 | { | |
35cd451c | 869 | RETSETUNDEF; |
c9d5ac95 | 870 | } |
35cd451c GS |
871 | } |
872 | else { | |
873 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 874 | DIE(aTHX_ PL_no_symref, sym, "a HASH"); |
35cd451c GS |
875 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
876 | } | |
877 | } | |
878 | else { | |
67955e0c | 879 | gv = (GV*)sv; |
a0d0e21e | 880 | } |
67955e0c | 881 | hv = GvHVn(gv); |
533c011a | 882 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 883 | hv = save_hash(gv); |
533c011a | 884 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
885 | SETs((SV*)hv); |
886 | RETURN; | |
887 | } | |
78f9721b | 888 | else if (LVRET) { |
be85d344 | 889 | if (gimme != G_ARRAY) |
78f9721b SM |
890 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
891 | " scalar context"); | |
892 | SETs((SV*)hv); | |
893 | RETURN; | |
894 | } | |
a0d0e21e LW |
895 | } |
896 | } | |
897 | ||
be85d344 | 898 | if (gimme == G_ARRAY) { /* array wanted */ |
3280af22 | 899 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 | 900 | return do_kv(); |
a0d0e21e | 901 | } |
be85d344 | 902 | else if (gimme == G_SCALAR) { |
a0d0e21e | 903 | dTARGET; |
243d6ab3 | 904 | TARG = Perl_hv_scalar(aTHX_ hv); |
a0d0e21e | 905 | SETTARG; |
a0d0e21e | 906 | } |
be85d344 | 907 | RETURN; |
a0d0e21e LW |
908 | } |
909 | ||
10c8fecd GS |
910 | STATIC void |
911 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
912 | { | |
913 | if (*relem) { | |
914 | SV *tmpstr; | |
6d822dc4 MS |
915 | HE *didstore; |
916 | ||
917 | if (ckWARN(WARN_MISC)) { | |
10c8fecd GS |
918 | if (relem == firstrelem && |
919 | SvROK(*relem) && | |
920 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
921 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
922 | { | |
9014280d | 923 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd GS |
924 | "Reference found where even-sized list expected"); |
925 | } | |
926 | else | |
9014280d | 927 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd GS |
928 | "Odd number of elements in hash assignment"); |
929 | } | |
6d822dc4 MS |
930 | |
931 | tmpstr = NEWSV(29,0); | |
932 | didstore = hv_store_ent(hash,*relem,tmpstr,0); | |
933 | if (SvMAGICAL(hash)) { | |
934 | if (SvSMAGICAL(tmpstr)) | |
935 | mg_set(tmpstr); | |
936 | if (!didstore) | |
937 | sv_2mortal(tmpstr); | |
938 | } | |
939 | TAINT_NOT; | |
10c8fecd GS |
940 | } |
941 | } | |
942 | ||
a0d0e21e LW |
943 | PP(pp_aassign) |
944 | { | |
39644a26 | 945 | dSP; |
3280af22 NIS |
946 | SV **lastlelem = PL_stack_sp; |
947 | SV **lastrelem = PL_stack_base + POPMARK; | |
948 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
949 | SV **firstlelem = lastrelem + 1; |
950 | ||
951 | register SV **relem; | |
952 | register SV **lelem; | |
953 | ||
954 | register SV *sv; | |
955 | register AV *ary; | |
956 | ||
54310121 | 957 | I32 gimme; |
a0d0e21e LW |
958 | HV *hash; |
959 | I32 i; | |
960 | int magic; | |
ca65944e | 961 | int duplicates = 0; |
5637b936 NC |
962 | SV **firsthashrelem = 0; /* "= 0" keeps gcc 2.95 quiet */ |
963 | ||
a0d0e21e | 964 | |
3280af22 | 965 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
ca65944e | 966 | gimme = GIMME_V; |
a0d0e21e LW |
967 | |
968 | /* If there's a common identifier on both sides we have to take | |
969 | * special care that assigning the identifier on the left doesn't | |
970 | * clobber a value on the right that's used later in the list. | |
971 | */ | |
10c8fecd | 972 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 | 973 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd GS |
974 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
975 | /*SUPPRESS 560*/ | |
155aba94 | 976 | if ((sv = *relem)) { |
a1f49e72 | 977 | TAINT_NOT; /* Each item is independent */ |
10c8fecd | 978 | *relem = sv_mortalcopy(sv); |
a1f49e72 | 979 | } |
10c8fecd | 980 | } |
a0d0e21e LW |
981 | } |
982 | ||
983 | relem = firstrelem; | |
984 | lelem = firstlelem; | |
985 | ary = Null(AV*); | |
986 | hash = Null(HV*); | |
10c8fecd | 987 | |
a0d0e21e | 988 | while (lelem <= lastlelem) { |
bbce6d69 | 989 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
990 | sv = *lelem++; |
991 | switch (SvTYPE(sv)) { | |
992 | case SVt_PVAV: | |
993 | ary = (AV*)sv; | |
748a9306 | 994 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e | 995 | av_clear(ary); |
7e42bd57 | 996 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
997 | i = 0; |
998 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 999 | SV **didstore; |
a0d0e21e LW |
1000 | sv = NEWSV(28,0); |
1001 | assert(*relem); | |
1002 | sv_setsv(sv,*relem); | |
1003 | *(relem++) = sv; | |
5117ca91 GS |
1004 | didstore = av_store(ary,i++,sv); |
1005 | if (magic) { | |
fb73857a | 1006 | if (SvSMAGICAL(sv)) |
1007 | mg_set(sv); | |
5117ca91 | 1008 | if (!didstore) |
8127e0e3 | 1009 | sv_2mortal(sv); |
5117ca91 | 1010 | } |
bbce6d69 | 1011 | TAINT_NOT; |
a0d0e21e LW |
1012 | } |
1013 | break; | |
10c8fecd | 1014 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e LW |
1015 | SV *tmpstr; |
1016 | ||
1017 | hash = (HV*)sv; | |
748a9306 | 1018 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e | 1019 | hv_clear(hash); |
ca65944e | 1020 | firsthashrelem = relem; |
a0d0e21e LW |
1021 | |
1022 | while (relem < lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1023 | HE *didstore; |
4633a7c4 | 1024 | if (*relem) |
a0d0e21e | 1025 | sv = *(relem++); |
4633a7c4 | 1026 | else |
3280af22 | 1027 | sv = &PL_sv_no, relem++; |
a0d0e21e LW |
1028 | tmpstr = NEWSV(29,0); |
1029 | if (*relem) | |
1030 | sv_setsv(tmpstr,*relem); /* value */ | |
1031 | *(relem++) = tmpstr; | |
ca65944e RGS |
1032 | if (gimme != G_VOID && hv_exists_ent(hash, sv, 0)) |
1033 | /* key overwrites an existing entry */ | |
1034 | duplicates += 2; | |
5117ca91 GS |
1035 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1036 | if (magic) { | |
fb73857a | 1037 | if (SvSMAGICAL(tmpstr)) |
1038 | mg_set(tmpstr); | |
5117ca91 | 1039 | if (!didstore) |
8127e0e3 | 1040 | sv_2mortal(tmpstr); |
5117ca91 | 1041 | } |
bbce6d69 | 1042 | TAINT_NOT; |
8e07c86e | 1043 | } |
6a0deba8 | 1044 | if (relem == lastrelem) { |
10c8fecd | 1045 | do_oddball(hash, relem, firstrelem); |
6a0deba8 | 1046 | relem++; |
1930e939 | 1047 | } |
a0d0e21e LW |
1048 | } |
1049 | break; | |
1050 | default: | |
6fc92669 GS |
1051 | if (SvIMMORTAL(sv)) { |
1052 | if (relem <= lastrelem) | |
1053 | relem++; | |
1054 | break; | |
a0d0e21e LW |
1055 | } |
1056 | if (relem <= lastrelem) { | |
1057 | sv_setsv(sv, *relem); | |
1058 | *(relem++) = sv; | |
1059 | } | |
1060 | else | |
3280af22 | 1061 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e LW |
1062 | SvSETMAGIC(sv); |
1063 | break; | |
1064 | } | |
1065 | } | |
3280af22 NIS |
1066 | if (PL_delaymagic & ~DM_DELAY) { |
1067 | if (PL_delaymagic & DM_UID) { | |
a0d0e21e | 1068 | #ifdef HAS_SETRESUID |
fb934a90 RD |
1069 | (void)setresuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1070 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1, | |
1071 | (Uid_t)-1); | |
56febc5e AD |
1072 | #else |
1073 | # ifdef HAS_SETREUID | |
fb934a90 RD |
1074 | (void)setreuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1075 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1); | |
56febc5e AD |
1076 | # else |
1077 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
1078 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1079 | (void)setruid(PL_uid); | |
1080 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 1081 | } |
56febc5e AD |
1082 | # endif /* HAS_SETRUID */ |
1083 | # ifdef HAS_SETEUID | |
b28d0864 | 1084 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
fb934a90 | 1085 | (void)seteuid(PL_euid); |
b28d0864 | 1086 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e | 1087 | } |
56febc5e | 1088 | # endif /* HAS_SETEUID */ |
b28d0864 NIS |
1089 | if (PL_delaymagic & DM_UID) { |
1090 | if (PL_uid != PL_euid) | |
cea2e8a9 | 1091 | DIE(aTHX_ "No setreuid available"); |
b28d0864 | 1092 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e | 1093 | } |
56febc5e AD |
1094 | # endif /* HAS_SETREUID */ |
1095 | #endif /* HAS_SETRESUID */ | |
d8eceb89 JH |
1096 | PL_uid = PerlProc_getuid(); |
1097 | PL_euid = PerlProc_geteuid(); | |
a0d0e21e | 1098 | } |
3280af22 | 1099 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1100 | #ifdef HAS_SETRESGID |
fb934a90 RD |
1101 | (void)setresgid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1102 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1, | |
1103 | (Gid_t)-1); | |
56febc5e AD |
1104 | #else |
1105 | # ifdef HAS_SETREGID | |
fb934a90 RD |
1106 | (void)setregid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1107 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1); | |
56febc5e AD |
1108 | # else |
1109 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
1110 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1111 | (void)setrgid(PL_gid); | |
1112 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 1113 | } |
56febc5e AD |
1114 | # endif /* HAS_SETRGID */ |
1115 | # ifdef HAS_SETEGID | |
b28d0864 | 1116 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
fb934a90 | 1117 | (void)setegid(PL_egid); |
b28d0864 | 1118 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e | 1119 | } |
56febc5e | 1120 | # endif /* HAS_SETEGID */ |
b28d0864 NIS |
1121 | if (PL_delaymagic & DM_GID) { |
1122 | if (PL_gid != PL_egid) | |
cea2e8a9 | 1123 | DIE(aTHX_ "No setregid available"); |
b28d0864 | 1124 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e | 1125 | } |
56febc5e AD |
1126 | # endif /* HAS_SETREGID */ |
1127 | #endif /* HAS_SETRESGID */ | |
d8eceb89 JH |
1128 | PL_gid = PerlProc_getgid(); |
1129 | PL_egid = PerlProc_getegid(); | |
a0d0e21e | 1130 | } |
3280af22 | 1131 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e | 1132 | } |
3280af22 | 1133 | PL_delaymagic = 0; |
54310121 | 1134 | |
54310121 | 1135 | if (gimme == G_VOID) |
1136 | SP = firstrelem - 1; | |
1137 | else if (gimme == G_SCALAR) { | |
1138 | dTARGET; | |
1139 | SP = firstrelem; | |
ca65944e | 1140 | SETi(lastrelem - firstrelem + 1 - duplicates); |
54310121 | 1141 | } |
1142 | else { | |
ca65944e | 1143 | if (ary) |
a0d0e21e | 1144 | SP = lastrelem; |
ca65944e RGS |
1145 | else if (hash) { |
1146 | if (duplicates) { | |
1147 | /* Removes from the stack the entries which ended up as | |
1148 | * duplicated keys in the hash (fix for [perl #24380]) */ | |
1149 | Move(firsthashrelem + duplicates, | |
1150 | firsthashrelem, duplicates, SV**); | |
1151 | lastrelem -= duplicates; | |
1152 | } | |
1153 | SP = lastrelem; | |
1154 | } | |
a0d0e21e LW |
1155 | else |
1156 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 1157 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 1158 | while (relem <= SP) |
3280af22 | 1159 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 1160 | } |
54310121 | 1161 | RETURN; |
a0d0e21e LW |
1162 | } |
1163 | ||
8782bef2 GB |
1164 | PP(pp_qr) |
1165 | { | |
39644a26 | 1166 | dSP; |
8782bef2 GB |
1167 | register PMOP *pm = cPMOP; |
1168 | SV *rv = sv_newmortal(); | |
57668c4d | 1169 | SV *sv = newSVrv(rv, "Regexp"); |
e08e52cf AMS |
1170 | if (pm->op_pmdynflags & PMdf_TAINTED) |
1171 | SvTAINTED_on(rv); | |
aaa362c4 | 1172 | sv_magic(sv,(SV*)ReREFCNT_inc(PM_GETRE(pm)), PERL_MAGIC_qr,0,0); |
8782bef2 GB |
1173 | RETURNX(PUSHs(rv)); |
1174 | } | |
1175 | ||
a0d0e21e LW |
1176 | PP(pp_match) |
1177 | { | |
39644a26 | 1178 | dSP; dTARG; |
a0d0e21e | 1179 | register PMOP *pm = cPMOP; |
d65afb4b | 1180 | PMOP *dynpm = pm; |
a0d0e21e LW |
1181 | register char *t; |
1182 | register char *s; | |
1183 | char *strend; | |
1184 | I32 global; | |
f722798b IZ |
1185 | I32 r_flags = REXEC_CHECKED; |
1186 | char *truebase; /* Start of string */ | |
aaa362c4 | 1187 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1188 | bool rxtainted; |
a0d0e21e LW |
1189 | I32 gimme = GIMME; |
1190 | STRLEN len; | |
748a9306 | 1191 | I32 minmatch = 0; |
3280af22 | 1192 | I32 oldsave = PL_savestack_ix; |
f86702cc | 1193 | I32 update_minmatch = 1; |
e60df1fa | 1194 | I32 had_zerolen = 0; |
a0d0e21e | 1195 | |
533c011a | 1196 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1197 | TARG = POPs; |
59f00321 RGS |
1198 | else if (PL_op->op_private & OPpTARGET_MY) |
1199 | GETTARGET; | |
a0d0e21e | 1200 | else { |
54b9620d | 1201 | TARG = DEFSV; |
a0d0e21e LW |
1202 | EXTEND(SP,1); |
1203 | } | |
d9f424b2 | 1204 | |
c277df42 | 1205 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e LW |
1206 | s = SvPV(TARG, len); |
1207 | strend = s + len; | |
1208 | if (!s) | |
2269b42e | 1209 | DIE(aTHX_ "panic: pp_match"); |
b3eb6a9b | 1210 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 | 1211 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 1212 | TAINT_NOT; |
a0d0e21e | 1213 | |
a30b2f1f | 1214 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 1215 | |
d65afb4b | 1216 | /* PMdf_USED is set after a ?? matches once */ |
48c036b1 | 1217 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 | 1218 | failure: |
a0d0e21e LW |
1219 | if (gimme == G_ARRAY) |
1220 | RETURN; | |
1221 | RETPUSHNO; | |
1222 | } | |
1223 | ||
d65afb4b | 1224 | /* empty pattern special-cased to use last successful pattern if possible */ |
3280af22 NIS |
1225 | if (!rx->prelen && PL_curpm) { |
1226 | pm = PL_curpm; | |
aaa362c4 | 1227 | rx = PM_GETRE(pm); |
a0d0e21e | 1228 | } |
d65afb4b | 1229 | |
eb160463 | 1230 | if (rx->minlen > (I32)len) |
d65afb4b | 1231 | goto failure; |
c277df42 | 1232 | |
a0d0e21e | 1233 | truebase = t = s; |
ad94a511 IZ |
1234 | |
1235 | /* XXXX What part of this is needed with true \G-support? */ | |
d65afb4b | 1236 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
cf93c79d | 1237 | rx->startp[0] = -1; |
a0d0e21e | 1238 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 | 1239 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 | 1240 | if (mg && mg->mg_len >= 0) { |
b7a35066 | 1241 | if (!(rx->reganch & ROPT_GPOS_SEEN)) |
1c846c1f | 1242 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e HS |
1243 | else if (rx->reganch & ROPT_ANCH_GPOS) { |
1244 | r_flags |= REXEC_IGNOREPOS; | |
1c846c1f | 1245 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e | 1246 | } |
748a9306 | 1247 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc | 1248 | update_minmatch = 0; |
748a9306 | 1249 | } |
a0d0e21e LW |
1250 | } |
1251 | } | |
14977893 JH |
1252 | if ((!global && rx->nparens) |
1253 | || SvTEMP(TARG) || PL_sawampersand) | |
1254 | r_flags |= REXEC_COPY_STR; | |
1c846c1f | 1255 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
1256 | r_flags |= REXEC_SCREAM; |
1257 | ||
e8f49695 | 1258 | if ((int)(pm->op_pmflags & PMf_MULTILINE) != PL_multiline) { |
3280af22 NIS |
1259 | SAVEINT(PL_multiline); |
1260 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
1261 | } |
1262 | ||
1263 | play_it_again: | |
cf93c79d IZ |
1264 | if (global && rx->startp[0] != -1) { |
1265 | t = s = rx->endp[0] + truebase; | |
d9f97599 | 1266 | if ((s + rx->minlen) > strend) |
a0d0e21e | 1267 | goto nope; |
f86702cc | 1268 | if (update_minmatch++) |
e60df1fa | 1269 | minmatch = had_zerolen; |
a0d0e21e | 1270 | } |
60aeb6fd NIS |
1271 | if (rx->reganch & RE_USE_INTUIT && |
1272 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { | |
ee0b7718 | 1273 | PL_bostr = truebase; |
f722798b IZ |
1274 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1275 | ||
1276 | if (!s) | |
1277 | goto nope; | |
1278 | if ( (rx->reganch & ROPT_CHECK_ALL) | |
14977893 | 1279 | && !PL_sawampersand |
f722798b IZ |
1280 | && ((rx->reganch & ROPT_NOSCAN) |
1281 | || !((rx->reganch & RE_INTUIT_TAIL) | |
05b4157f GS |
1282 | && (r_flags & REXEC_SCREAM))) |
1283 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
f722798b | 1284 | goto yup; |
a0d0e21e | 1285 | } |
cea2e8a9 | 1286 | if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 | 1287 | { |
3280af22 | 1288 | PL_curpm = pm; |
d65afb4b HS |
1289 | if (dynpm->op_pmflags & PMf_ONCE) |
1290 | dynpm->op_pmdynflags |= PMdf_USED; | |
a0d0e21e LW |
1291 | goto gotcha; |
1292 | } | |
1293 | else | |
1294 | goto ret_no; | |
1295 | /*NOTREACHED*/ | |
1296 | ||
1297 | gotcha: | |
72311751 GS |
1298 | if (rxtainted) |
1299 | RX_MATCH_TAINTED_on(rx); | |
1300 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1301 | if (gimme == G_ARRAY) { |
ffc61ed2 | 1302 | I32 nparens, i, len; |
a0d0e21e | 1303 | |
ffc61ed2 JH |
1304 | nparens = rx->nparens; |
1305 | if (global && !nparens) | |
a0d0e21e LW |
1306 | i = 1; |
1307 | else | |
1308 | i = 0; | |
c277df42 | 1309 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1310 | EXTEND(SP, nparens + i); |
1311 | EXTEND_MORTAL(nparens + i); | |
1312 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e LW |
1313 | PUSHs(sv_newmortal()); |
1314 | /*SUPPRESS 560*/ | |
cf93c79d IZ |
1315 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
1316 | len = rx->endp[i] - rx->startp[i]; | |
289555fe | 1317 | s = rx->startp[i] + truebase; |
290deeac A |
1318 | if (rx->endp[i] < 0 || rx->startp[i] < 0 || |
1319 | len < 0 || len > strend - s) | |
1320 | DIE(aTHX_ "panic: pp_match start/end pointers"); | |
a0d0e21e | 1321 | sv_setpvn(*SP, s, len); |
cce850e4 | 1322 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1323 | SvUTF8_on(*SP); |
a0d0e21e LW |
1324 | } |
1325 | } | |
1326 | if (global) { | |
d65afb4b | 1327 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
0af80b60 HS |
1328 | MAGIC* mg = 0; |
1329 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
1330 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1331 | if (!mg) { | |
1332 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); | |
1333 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1334 | } | |
1335 | if (rx->startp[0] != -1) { | |
1336 | mg->mg_len = rx->endp[0]; | |
1337 | if (rx->startp[0] == rx->endp[0]) | |
1338 | mg->mg_flags |= MGf_MINMATCH; | |
1339 | else | |
1340 | mg->mg_flags &= ~MGf_MINMATCH; | |
1341 | } | |
1342 | } | |
cf93c79d IZ |
1343 | had_zerolen = (rx->startp[0] != -1 |
1344 | && rx->startp[0] == rx->endp[0]); | |
c277df42 | 1345 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1346 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1347 | goto play_it_again; |
1348 | } | |
ffc61ed2 | 1349 | else if (!nparens) |
bde848c5 | 1350 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1351 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1352 | RETURN; |
1353 | } | |
1354 | else { | |
1355 | if (global) { | |
1356 | MAGIC* mg = 0; | |
1357 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
14befaf4 | 1358 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1359 | if (!mg) { |
14befaf4 DM |
1360 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1361 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
a0d0e21e | 1362 | } |
cf93c79d IZ |
1363 | if (rx->startp[0] != -1) { |
1364 | mg->mg_len = rx->endp[0]; | |
d9f97599 | 1365 | if (rx->startp[0] == rx->endp[0]) |
748a9306 LW |
1366 | mg->mg_flags |= MGf_MINMATCH; |
1367 | else | |
1368 | mg->mg_flags &= ~MGf_MINMATCH; | |
1369 | } | |
a0d0e21e | 1370 | } |
4633a7c4 | 1371 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1372 | RETPUSHYES; |
1373 | } | |
1374 | ||
f722798b | 1375 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1376 | if (rxtainted) |
1377 | RX_MATCH_TAINTED_on(rx); | |
1378 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1379 | PL_curpm = pm; |
d65afb4b HS |
1380 | if (dynpm->op_pmflags & PMf_ONCE) |
1381 | dynpm->op_pmdynflags |= PMdf_USED; | |
cf93c79d IZ |
1382 | if (RX_MATCH_COPIED(rx)) |
1383 | Safefree(rx->subbeg); | |
1384 | RX_MATCH_COPIED_off(rx); | |
1385 | rx->subbeg = Nullch; | |
a0d0e21e | 1386 | if (global) { |
d9f97599 | 1387 | rx->subbeg = truebase; |
cf93c79d | 1388 | rx->startp[0] = s - truebase; |
a30b2f1f | 1389 | if (RX_MATCH_UTF8(rx)) { |
60aeb6fd NIS |
1390 | char *t = (char*)utf8_hop((U8*)s, rx->minlen); |
1391 | rx->endp[0] = t - truebase; | |
1392 | } | |
1393 | else { | |
1394 | rx->endp[0] = s - truebase + rx->minlen; | |
1395 | } | |
cf93c79d | 1396 | rx->sublen = strend - truebase; |
a0d0e21e | 1397 | goto gotcha; |
1c846c1f | 1398 | } |
14977893 JH |
1399 | if (PL_sawampersand) { |
1400 | I32 off; | |
ed252734 NC |
1401 | #ifdef PERL_COPY_ON_WRITE |
1402 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
1403 | if (DEBUG_C_TEST) { | |
1404 | PerlIO_printf(Perl_debug_log, | |
1405 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", | |
1406 | (int) SvTYPE(TARG), truebase, t, | |
1407 | (int)(t-truebase)); | |
1408 | } | |
1409 | rx->saved_copy = sv_setsv_cow(rx->saved_copy, TARG); | |
1410 | rx->subbeg = SvPVX(rx->saved_copy) + (t - truebase); | |
1411 | assert (SvPOKp(rx->saved_copy)); | |
1412 | } else | |
1413 | #endif | |
1414 | { | |
14977893 | 1415 | |
ed252734 NC |
1416 | rx->subbeg = savepvn(t, strend - t); |
1417 | #ifdef PERL_COPY_ON_WRITE | |
1418 | rx->saved_copy = Nullsv; | |
1419 | #endif | |
1420 | } | |
14977893 JH |
1421 | rx->sublen = strend - t; |
1422 | RX_MATCH_COPIED_on(rx); | |
1423 | off = rx->startp[0] = s - t; | |
1424 | rx->endp[0] = off + rx->minlen; | |
1425 | } | |
1426 | else { /* startp/endp are used by @- @+. */ | |
1427 | rx->startp[0] = s - truebase; | |
1428 | rx->endp[0] = s - truebase + rx->minlen; | |
1429 | } | |
2d862feb | 1430 | rx->nparens = rx->lastparen = rx->lastcloseparen = 0; /* used by @-, @+, and $^N */ |
4633a7c4 | 1431 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1432 | RETPUSHYES; |
1433 | ||
1434 | nope: | |
a0d0e21e | 1435 | ret_no: |
d65afb4b | 1436 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e | 1437 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 | 1438 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1439 | if (mg) |
565764a8 | 1440 | mg->mg_len = -1; |
a0d0e21e LW |
1441 | } |
1442 | } | |
4633a7c4 | 1443 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1444 | if (gimme == G_ARRAY) |
1445 | RETURN; | |
1446 | RETPUSHNO; | |
1447 | } | |
1448 | ||
1449 | OP * | |
864dbfa3 | 1450 | Perl_do_readline(pTHX) |
a0d0e21e LW |
1451 | { |
1452 | dSP; dTARGETSTACKED; | |
1453 | register SV *sv; | |
1454 | STRLEN tmplen = 0; | |
1455 | STRLEN offset; | |
760ac839 | 1456 | PerlIO *fp; |
3280af22 | 1457 | register IO *io = GvIO(PL_last_in_gv); |
533c011a | 1458 | register I32 type = PL_op->op_type; |
54310121 | 1459 | I32 gimme = GIMME_V; |
e79b0511 | 1460 | MAGIC *mg; |
a0d0e21e | 1461 | |
5b468f54 | 1462 | if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { |
e79b0511 | 1463 | PUSHMARK(SP); |
5b468f54 | 1464 | XPUSHs(SvTIED_obj((SV*)io, mg)); |
e79b0511 | 1465 | PUTBACK; |
1466 | ENTER; | |
864dbfa3 | 1467 | call_method("READLINE", gimme); |
e79b0511 | 1468 | LEAVE; |
1469 | SPAGAIN; | |
0b7c7b4f HS |
1470 | if (gimme == G_SCALAR) { |
1471 | SV* result = POPs; | |
1472 | SvSetSV_nosteal(TARG, result); | |
1473 | PUSHTARG; | |
1474 | } | |
e79b0511 | 1475 | RETURN; |
1476 | } | |
a0d0e21e LW |
1477 | fp = Nullfp; |
1478 | if (io) { | |
1479 | fp = IoIFP(io); | |
1480 | if (!fp) { | |
1481 | if (IoFLAGS(io) & IOf_ARGV) { | |
1482 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1483 | IoLINES(io) = 0; |
3280af22 | 1484 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1485 | IoFLAGS(io) &= ~IOf_START; |
9d116dd7 | 1486 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 NIS |
1487 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1488 | SvSETMAGIC(GvSV(PL_last_in_gv)); | |
a2008d6d GS |
1489 | fp = IoIFP(io); |
1490 | goto have_fp; | |
a0d0e21e LW |
1491 | } |
1492 | } | |
3280af22 | 1493 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1494 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1495 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1496 | } |
1497 | } | |
0d44d22b NC |
1498 | else if (type == OP_GLOB) |
1499 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1500 | } |
1501 | else if (type == OP_GLOB) | |
1502 | SP--; | |
a00b5bd3 | 1503 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 | 1504 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 | 1505 | } |
a0d0e21e LW |
1506 | } |
1507 | if (!fp) { | |
790090df HS |
1508 | if (ckWARN2(WARN_GLOB, WARN_CLOSED) |
1509 | && (!io || !(IoFLAGS(io) & IOf_START))) { | |
3f4520fe | 1510 | if (type == OP_GLOB) |
9014280d | 1511 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a GS |
1512 | "glob failed (can't start child: %s)", |
1513 | Strerror(errno)); | |
69282e91 | 1514 | else |
bc37a18f | 1515 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe | 1516 | } |
54310121 | 1517 | if (gimme == G_SCALAR) { |
79628082 | 1518 | /* undef TARG, and push that undefined value */ |
ba92458f AE |
1519 | if (type != OP_RCATLINE) { |
1520 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
929a4907 | 1521 | (void)SvOK_off(TARG); |
ba92458f | 1522 | } |
a0d0e21e LW |
1523 | PUSHTARG; |
1524 | } | |
1525 | RETURN; | |
1526 | } | |
a2008d6d | 1527 | have_fp: |
54310121 | 1528 | if (gimme == G_SCALAR) { |
a0d0e21e | 1529 | sv = TARG; |
9607fc9c | 1530 | if (SvROK(sv)) |
1531 | sv_unref(sv); | |
a0d0e21e LW |
1532 | (void)SvUPGRADE(sv, SVt_PV); |
1533 | tmplen = SvLEN(sv); /* remember if already alloced */ | |
bc44a8a2 | 1534 | if (!tmplen && !SvREADONLY(sv)) |
a0d0e21e | 1535 | Sv_Grow(sv, 80); /* try short-buffering it */ |
2b5e58c4 AMS |
1536 | offset = 0; |
1537 | if (type == OP_RCATLINE && SvOK(sv)) { | |
1538 | if (!SvPOK(sv)) { | |
1539 | STRLEN n_a; | |
1540 | (void)SvPV_force(sv, n_a); | |
1541 | } | |
a0d0e21e | 1542 | offset = SvCUR(sv); |
2b5e58c4 | 1543 | } |
a0d0e21e | 1544 | } |
54310121 | 1545 | else { |
1546 | sv = sv_2mortal(NEWSV(57, 80)); | |
1547 | offset = 0; | |
1548 | } | |
fbad3eb5 | 1549 | |
3887d568 AP |
1550 | /* This should not be marked tainted if the fp is marked clean */ |
1551 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1552 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1553 | TAINT; \ | |
1554 | SvTAINTED_on(sv); \ | |
1555 | } | |
1556 | ||
684bef36 | 1557 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1558 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1559 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1560 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1561 | |
a0d0e21e | 1562 | for (;;) { |
09e8efcc | 1563 | PUTBACK; |
fbad3eb5 | 1564 | if (!sv_gets(sv, fp, offset) |
2d726892 TF |
1565 | && (type == OP_GLOB |
1566 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
1567 | || PerlIO_error(fp))) | |
fbad3eb5 | 1568 | { |
760ac839 | 1569 | PerlIO_clearerr(fp); |
a0d0e21e | 1570 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1571 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1572 | if (fp) |
1573 | continue; | |
3280af22 | 1574 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1575 | } |
1576 | else if (type == OP_GLOB) { | |
e476b1b5 | 1577 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
9014280d | 1578 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
4eb79ab5 | 1579 | "glob failed (child exited with status %d%s)", |
894356b3 | 1580 | (int)(STATUS_CURRENT >> 8), |
cf494569 | 1581 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 | 1582 | } |
a0d0e21e | 1583 | } |
54310121 | 1584 | if (gimme == G_SCALAR) { |
ba92458f AE |
1585 | if (type != OP_RCATLINE) { |
1586 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
929a4907 | 1587 | (void)SvOK_off(TARG); |
ba92458f | 1588 | } |
09e8efcc | 1589 | SPAGAIN; |
a0d0e21e LW |
1590 | PUSHTARG; |
1591 | } | |
3887d568 | 1592 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1593 | RETURN; |
1594 | } | |
3887d568 | 1595 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1596 | IoLINES(io)++; |
b9fee9ba | 1597 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1598 | SvSETMAGIC(sv); |
09e8efcc | 1599 | SPAGAIN; |
a0d0e21e | 1600 | XPUSHs(sv); |
a0d0e21e LW |
1601 | if (type == OP_GLOB) { |
1602 | char *tmps; | |
1603 | ||
3280af22 | 1604 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd | 1605 | tmps = SvEND(sv) - 1; |
3280af22 | 1606 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd | 1607 | *tmps = '\0'; |
1608 | SvCUR(sv)--; | |
1609 | } | |
1610 | } | |
a0d0e21e LW |
1611 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1612 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && | |
1613 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) | |
1614 | break; | |
43384a1a | 1615 | if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1616 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1617 | continue; | |
1618 | } | |
2d79bf7f JH |
1619 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
1620 | U8 *s = (U8*)SvPVX(sv) + offset; | |
1621 | STRLEN len = SvCUR(sv) - offset; | |
1622 | U8 *f; | |
1623 | ||
1624 | if (ckWARN(WARN_UTF8) && | |
1625 | !Perl_is_utf8_string_loc(aTHX_ s, len, &f)) | |
1626 | /* Emulate :encoding(utf8) warning in the same case. */ | |
1627 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
1628 | "utf8 \"\\x%02X\" does not map to Unicode", | |
1629 | f < (U8*)SvEND(sv) ? *f : 0); | |
a0d0e21e | 1630 | } |
54310121 | 1631 | if (gimme == G_ARRAY) { |
a0d0e21e LW |
1632 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1633 | SvLEN_set(sv, SvCUR(sv)+1); | |
1634 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1635 | } | |
1636 | sv = sv_2mortal(NEWSV(58, 80)); | |
1637 | continue; | |
1638 | } | |
54310121 | 1639 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e LW |
1640 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1641 | if (SvCUR(sv) < 60) | |
1642 | SvLEN_set(sv, 80); | |
1643 | else | |
1644 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ | |
1645 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1646 | } | |
1647 | RETURN; | |
1648 | } | |
1649 | } | |
1650 | ||
1651 | PP(pp_enter) | |
1652 | { | |
39644a26 | 1653 | dSP; |
c09156bb | 1654 | register PERL_CONTEXT *cx; |
533c011a | 1655 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e | 1656 | |
54310121 | 1657 | if (gimme == -1) { |
1658 | if (cxstack_ix >= 0) | |
1659 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1660 | else | |
1661 | gimme = G_SCALAR; | |
1662 | } | |
a0d0e21e LW |
1663 | |
1664 | ENTER; | |
1665 | ||
1666 | SAVETMPS; | |
924508f0 | 1667 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
1668 | |
1669 | RETURN; | |
1670 | } | |
1671 | ||
1672 | PP(pp_helem) | |
1673 | { | |
39644a26 | 1674 | dSP; |
760ac839 | 1675 | HE* he; |
ae77835f | 1676 | SV **svp; |
a0d0e21e | 1677 | SV *keysv = POPs; |
a0d0e21e | 1678 | HV *hv = (HV*)POPs; |
78f9721b | 1679 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a | 1680 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
be6c24e0 | 1681 | SV *sv; |
765f542d NC |
1682 | #ifdef PERL_COPY_ON_WRITE |
1683 | U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvUVX(keysv) : 0; | |
1684 | #else | |
1c846c1f | 1685 | U32 hash = (SvFAKE(keysv) && SvREADONLY(keysv)) ? SvUVX(keysv) : 0; |
765f542d | 1686 | #endif |
9c5ffd7c | 1687 | I32 preeminent = 0; |
a0d0e21e | 1688 | |
ae77835f | 1689 | if (SvTYPE(hv) == SVt_PVHV) { |
8d1f198f DM |
1690 | if (PL_op->op_private & OPpLVAL_INTRO) { |
1691 | MAGIC *mg; | |
1692 | HV *stash; | |
1693 | /* does the element we're localizing already exist? */ | |
c39e6ab0 | 1694 | preeminent = |
8d1f198f DM |
1695 | /* can we determine whether it exists? */ |
1696 | ( !SvRMAGICAL(hv) | |
1697 | || mg_find((SV*)hv, PERL_MAGIC_env) | |
1698 | || ( (mg = mg_find((SV*)hv, PERL_MAGIC_tied)) | |
1699 | /* Try to preserve the existenceness of a tied hash | |
1700 | * element by using EXISTS and DELETE if possible. | |
1701 | * Fallback to FETCH and STORE otherwise */ | |
1702 | && (stash = SvSTASH(SvRV(SvTIED_obj((SV*)hv, mg)))) | |
1703 | && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) | |
1704 | && gv_fetchmethod_autoload(stash, "DELETE", TRUE) | |
1705 | ) | |
1706 | ) ? hv_exists_ent(hv, keysv, 0) : 1; | |
c39e6ab0 | 1707 | |
8d1f198f | 1708 | } |
1c846c1f | 1709 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
97fcbf96 | 1710 | svp = he ? &HeVAL(he) : 0; |
ae77835f | 1711 | } |
c750a3ec | 1712 | else { |
a0d0e21e | 1713 | RETPUSHUNDEF; |
c750a3ec | 1714 | } |
a0d0e21e | 1715 | if (lval) { |
3280af22 | 1716 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 1717 | SV* lv; |
1718 | SV* key2; | |
2d8e6c8d GS |
1719 | if (!defer) { |
1720 | STRLEN n_a; | |
cea2e8a9 | 1721 | DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); |
2d8e6c8d | 1722 | } |
68dc0745 | 1723 | lv = sv_newmortal(); |
1724 | sv_upgrade(lv, SVt_PVLV); | |
1725 | LvTYPE(lv) = 'y'; | |
14befaf4 | 1726 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 | 1727 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
1728 | LvTARG(lv) = SvREFCNT_inc(hv); | |
1729 | LvTARGLEN(lv) = 1; | |
1730 | PUSHs(lv); | |
1731 | RETURN; | |
1732 | } | |
533c011a | 1733 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f | 1734 | if (HvNAME(hv) && isGV(*svp)) |
533c011a | 1735 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc SC |
1736 | else { |
1737 | if (!preeminent) { | |
1738 | STRLEN keylen; | |
1739 | char *key = SvPV(keysv, keylen); | |
57813020 | 1740 | SAVEDELETE(hv, savepvn(key,keylen), keylen); |
bfc4de9f | 1741 | } else |
1f5346dc SC |
1742 | save_helem(hv, keysv, svp); |
1743 | } | |
5f05dabc | 1744 | } |
533c011a NIS |
1745 | else if (PL_op->op_private & OPpDEREF) |
1746 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 1747 | } |
3280af22 | 1748 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
1749 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1750 | * Pushing the magical RHS on to the stack is useless, since | |
1751 | * that magic is soon destined to be misled by the local(), | |
1752 | * and thus the later pp_sassign() will fail to mg_get() the | |
1753 | * old value. This should also cure problems with delayed | |
1754 | * mg_get()s. GSAR 98-07-03 */ | |
1755 | if (!lval && SvGMAGICAL(sv)) | |
1756 | sv = sv_mortalcopy(sv); | |
1757 | PUSHs(sv); | |
a0d0e21e LW |
1758 | RETURN; |
1759 | } | |
1760 | ||
1761 | PP(pp_leave) | |
1762 | { | |
39644a26 | 1763 | dSP; |
c09156bb | 1764 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
1765 | register SV **mark; |
1766 | SV **newsp; | |
1767 | PMOP *newpm; | |
1768 | I32 gimme; | |
1769 | ||
533c011a | 1770 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1771 | cx = &cxstack[cxstack_ix]; |
3280af22 | 1772 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e LW |
1773 | } |
1774 | ||
1775 | POPBLOCK(cx,newpm); | |
1776 | ||
533c011a | 1777 | gimme = OP_GIMME(PL_op, -1); |
54310121 | 1778 | if (gimme == -1) { |
1779 | if (cxstack_ix >= 0) | |
1780 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1781 | else | |
1782 | gimme = G_SCALAR; | |
1783 | } | |
a0d0e21e | 1784 | |
a1f49e72 | 1785 | TAINT_NOT; |
54310121 | 1786 | if (gimme == G_VOID) |
1787 | SP = newsp; | |
1788 | else if (gimme == G_SCALAR) { | |
1789 | MARK = newsp + 1; | |
09256e2f | 1790 | if (MARK <= SP) { |
54310121 | 1791 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1792 | *MARK = TOPs; | |
1793 | else | |
1794 | *MARK = sv_mortalcopy(TOPs); | |
09256e2f | 1795 | } else { |
54310121 | 1796 | MEXTEND(mark,0); |
3280af22 | 1797 | *MARK = &PL_sv_undef; |
a0d0e21e | 1798 | } |
54310121 | 1799 | SP = MARK; |
a0d0e21e | 1800 | } |
54310121 | 1801 | else if (gimme == G_ARRAY) { |
a1f49e72 CS |
1802 | /* in case LEAVE wipes old return values */ |
1803 | for (mark = newsp + 1; mark <= SP; mark++) { | |
1804 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
a0d0e21e | 1805 | *mark = sv_mortalcopy(*mark); |
a1f49e72 CS |
1806 | TAINT_NOT; /* Each item is independent */ |
1807 | } | |
1808 | } | |
a0d0e21e | 1809 | } |
3280af22 | 1810 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e LW |
1811 | |
1812 | LEAVE; | |
1813 | ||
1814 | RETURN; | |
1815 | } | |
1816 | ||
1817 | PP(pp_iter) | |
1818 | { | |
39644a26 | 1819 | dSP; |
c09156bb | 1820 | register PERL_CONTEXT *cx; |
5f05dabc | 1821 | SV* sv; |
4633a7c4 | 1822 | AV* av; |
1d7c1841 | 1823 | SV **itersvp; |
a0d0e21e | 1824 | |
924508f0 | 1825 | EXTEND(SP, 1); |
a0d0e21e | 1826 | cx = &cxstack[cxstack_ix]; |
6b35e009 | 1827 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 | 1828 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1829 | |
1d7c1841 | 1830 | itersvp = CxITERVAR(cx); |
4633a7c4 | 1831 | av = cx->blk_loop.iterary; |
89ea2908 GA |
1832 | if (SvTYPE(av) != SVt_PVAV) { |
1833 | /* iterate ($min .. $max) */ | |
1834 | if (cx->blk_loop.iterlval) { | |
1835 | /* string increment */ | |
1836 | register SV* cur = cx->blk_loop.iterlval; | |
1837 | STRLEN maxlen; | |
1838 | char *max = SvPV((SV*)av, maxlen); | |
1839 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { | |
1d7c1841 | 1840 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1841 | /* safe to reuse old SV */ |
1d7c1841 | 1842 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1843 | } |
1c846c1f | 1844 | else |
eaa5c2d6 GA |
1845 | { |
1846 | /* we need a fresh SV every time so that loop body sees a | |
1847 | * completely new SV for closures/references to work as | |
1848 | * they used to */ | |
1d7c1841 GS |
1849 | SvREFCNT_dec(*itersvp); |
1850 | *itersvp = newSVsv(cur); | |
eaa5c2d6 | 1851 | } |
89ea2908 GA |
1852 | if (strEQ(SvPVX(cur), max)) |
1853 | sv_setiv(cur, 0); /* terminate next time */ | |
1854 | else | |
1855 | sv_inc(cur); | |
1856 | RETPUSHYES; | |
1857 | } | |
1858 | RETPUSHNO; | |
1859 | } | |
1860 | /* integer increment */ | |
1861 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) | |
1862 | RETPUSHNO; | |
7f61b687 | 1863 | |
3db8f154 | 1864 | /* don't risk potential race */ |
1d7c1841 | 1865 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1866 | /* safe to reuse old SV */ |
1d7c1841 | 1867 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 | 1868 | } |
1c846c1f | 1869 | else |
eaa5c2d6 GA |
1870 | { |
1871 | /* we need a fresh SV every time so that loop body sees a | |
1872 | * completely new SV for closures/references to work as they | |
1873 | * used to */ | |
1d7c1841 GS |
1874 | SvREFCNT_dec(*itersvp); |
1875 | *itersvp = newSViv(cx->blk_loop.iterix++); | |
eaa5c2d6 | 1876 | } |
89ea2908 GA |
1877 | RETPUSHYES; |
1878 | } | |
1879 | ||
1880 | /* iterate array */ | |
3280af22 | 1881 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) |
4633a7c4 | 1882 | RETPUSHNO; |
a0d0e21e | 1883 | |
1d7c1841 | 1884 | SvREFCNT_dec(*itersvp); |
a0d0e21e | 1885 | |
d42935ef JH |
1886 | if (SvMAGICAL(av) || AvREIFY(av)) { |
1887 | SV **svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE); | |
1888 | if (svp) | |
1889 | sv = *svp; | |
1890 | else | |
1891 | sv = Nullsv; | |
1892 | } | |
1893 | else { | |
1894 | sv = AvARRAY(av)[++cx->blk_loop.iterix]; | |
1895 | } | |
cccede53 DM |
1896 | if (sv && SvREFCNT(sv) == 0) { |
1897 | *itersvp = Nullsv; | |
b6c83531 | 1898 | Perl_croak(aTHX_ "Use of freed value in iteration"); |
cccede53 DM |
1899 | } |
1900 | ||
d42935ef | 1901 | if (sv) |
a0d0e21e | 1902 | SvTEMP_off(sv); |
a0d0e21e | 1903 | else |
3280af22 | 1904 | sv = &PL_sv_undef; |
8b530633 | 1905 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc | 1906 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc | 1907 | if (lv && SvREFCNT(lv) > 1) { |
1908 | SvREFCNT_dec(lv); | |
1909 | lv = Nullsv; | |
1910 | } | |
5f05dabc | 1911 | if (lv) |
1912 | SvREFCNT_dec(LvTARG(lv)); | |
1913 | else { | |
68dc0745 | 1914 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc | 1915 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc | 1916 | LvTYPE(lv) = 'y'; |
14befaf4 | 1917 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
5f05dabc | 1918 | } |
1919 | LvTARG(lv) = SvREFCNT_inc(av); | |
1920 | LvTARGOFF(lv) = cx->blk_loop.iterix; | |
42718184 | 1921 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc | 1922 | sv = (SV*)lv; |
1923 | } | |
a0d0e21e | 1924 | |
1d7c1841 | 1925 | *itersvp = SvREFCNT_inc(sv); |
a0d0e21e LW |
1926 | RETPUSHYES; |
1927 | } | |
1928 | ||
1929 | PP(pp_subst) | |
1930 | { | |
39644a26 | 1931 | dSP; dTARG; |
a0d0e21e LW |
1932 | register PMOP *pm = cPMOP; |
1933 | PMOP *rpm = pm; | |
1934 | register SV *dstr; | |
1935 | register char *s; | |
1936 | char *strend; | |
1937 | register char *m; | |
1938 | char *c; | |
1939 | register char *d; | |
1940 | STRLEN clen; | |
1941 | I32 iters = 0; | |
1942 | I32 maxiters; | |
1943 | register I32 i; | |
1944 | bool once; | |
71be2cbc | 1945 | bool rxtainted; |
a0d0e21e | 1946 | char *orig; |
22e551b9 | 1947 | I32 r_flags; |
aaa362c4 | 1948 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
1949 | STRLEN len; |
1950 | int force_on_match = 0; | |
3280af22 | 1951 | I32 oldsave = PL_savestack_ix; |
792b2c16 | 1952 | STRLEN slen; |
f272994b | 1953 | bool doutf8 = FALSE; |
ed252734 NC |
1954 | #ifdef PERL_COPY_ON_WRITE |
1955 | bool is_cow; | |
1956 | #endif | |
db79b45b | 1957 | SV *nsv = Nullsv; |
a0d0e21e | 1958 | |
5cd24f17 | 1959 | /* known replacement string? */ |
1960 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; | |
533c011a | 1961 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1962 | TARG = POPs; |
59f00321 RGS |
1963 | else if (PL_op->op_private & OPpTARGET_MY) |
1964 | GETTARGET; | |
a0d0e21e | 1965 | else { |
54b9620d | 1966 | TARG = DEFSV; |
a0d0e21e | 1967 | EXTEND(SP,1); |
1c846c1f | 1968 | } |
d9f424b2 | 1969 | |
ed252734 NC |
1970 | #ifdef PERL_COPY_ON_WRITE |
1971 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, | |
1972 | because they make integers such as 256 "false". */ | |
1973 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
1974 | #else | |
765f542d NC |
1975 | if (SvIsCOW(TARG)) |
1976 | sv_force_normal_flags(TARG,0); | |
ed252734 NC |
1977 | #endif |
1978 | if ( | |
1979 | #ifdef PERL_COPY_ON_WRITE | |
1980 | !is_cow && | |
1981 | #endif | |
1982 | (SvREADONLY(TARG) | |
4ce457a6 TP |
1983 | || ( (SvTYPE(TARG) == SVt_PVGV || SvTYPE(TARG) > SVt_PVLV) |
1984 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) | |
d470f89e | 1985 | DIE(aTHX_ PL_no_modify); |
8ec5e241 NIS |
1986 | PUTBACK; |
1987 | ||
a0d0e21e | 1988 | s = SvPV(TARG, len); |
68dc0745 | 1989 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 1990 | force_on_match = 1; |
b3eb6a9b | 1991 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 NIS |
1992 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
1993 | if (PL_tainted) | |
b3eb6a9b | 1994 | rxtainted |= 2; |
9212bbba | 1995 | TAINT_NOT; |
a12c0f56 | 1996 | |
a30b2f1f | 1997 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 1998 | |
a0d0e21e LW |
1999 | force_it: |
2000 | if (!pm || !s) | |
2269b42e | 2001 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
2002 | |
2003 | strend = s + len; | |
a30b2f1f | 2004 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
2005 | maxiters = 2 * slen + 10; /* We can match twice at each |
2006 | position, once with zero-length, | |
2007 | second time with non-zero. */ | |
a0d0e21e | 2008 | |
3280af22 NIS |
2009 | if (!rx->prelen && PL_curpm) { |
2010 | pm = PL_curpm; | |
aaa362c4 | 2011 | rx = PM_GETRE(pm); |
a0d0e21e | 2012 | } |
22e551b9 | 2013 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
ed252734 | 2014 | ? REXEC_COPY_STR : 0; |
f722798b | 2015 | if (SvSCREAM(TARG)) |
22e551b9 | 2016 | r_flags |= REXEC_SCREAM; |
e8f49695 | 2017 | if ((int)(pm->op_pmflags & PMf_MULTILINE) != PL_multiline) { |
3280af22 NIS |
2018 | SAVEINT(PL_multiline); |
2019 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
2020 | } |
2021 | orig = m = s; | |
f722798b | 2022 | if (rx->reganch & RE_USE_INTUIT) { |
ee0b7718 | 2023 | PL_bostr = orig; |
f722798b IZ |
2024 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
2025 | ||
2026 | if (!s) | |
2027 | goto nope; | |
2028 | /* How to do it in subst? */ | |
2029 | /* if ( (rx->reganch & ROPT_CHECK_ALL) | |
1c846c1f | 2030 | && !PL_sawampersand |
f722798b IZ |
2031 | && ((rx->reganch & ROPT_NOSCAN) |
2032 | || !((rx->reganch & RE_INTUIT_TAIL) | |
2033 | && (r_flags & REXEC_SCREAM)))) | |
2034 | goto yup; | |
2035 | */ | |
a0d0e21e | 2036 | } |
71be2cbc | 2037 | |
2038 | /* only replace once? */ | |
a0d0e21e | 2039 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc | 2040 | |
2041 | /* known replacement string? */ | |
f272994b | 2042 | if (dstr) { |
8514a05a JH |
2043 | /* replacement needing upgrading? */ |
2044 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 2045 | nsv = sv_newmortal(); |
4a176938 | 2046 | SvSetSV(nsv, dstr); |
8514a05a JH |
2047 | if (PL_encoding) |
2048 | sv_recode_to_utf8(nsv, PL_encoding); | |
2049 | else | |
2050 | sv_utf8_upgrade(nsv); | |
2051 | c = SvPV(nsv, clen); | |
4a176938 JH |
2052 | doutf8 = TRUE; |
2053 | } | |
2054 | else { | |
2055 | c = SvPV(dstr, clen); | |
2056 | doutf8 = DO_UTF8(dstr); | |
8514a05a | 2057 | } |
f272994b A |
2058 | } |
2059 | else { | |
2060 | c = Nullch; | |
2061 | doutf8 = FALSE; | |
2062 | } | |
2063 | ||
71be2cbc | 2064 | /* can do inplace substitution? */ |
ed252734 NC |
2065 | if (c |
2066 | #ifdef PERL_COPY_ON_WRITE | |
2067 | && !is_cow | |
2068 | #endif | |
2069 | && (I32)clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) | |
db79b45b JH |
2070 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN) |
2071 | && (!doutf8 || SvUTF8(TARG))) { | |
f722798b IZ |
2072 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2073 | r_flags | REXEC_CHECKED)) | |
2074 | { | |
8ec5e241 | 2075 | SPAGAIN; |
3280af22 | 2076 | PUSHs(&PL_sv_no); |
71be2cbc | 2077 | LEAVE_SCOPE(oldsave); |
2078 | RETURN; | |
2079 | } | |
ed252734 NC |
2080 | #ifdef PERL_COPY_ON_WRITE |
2081 | if (SvIsCOW(TARG)) { | |
2082 | assert (!force_on_match); | |
2083 | goto have_a_cow; | |
2084 | } | |
2085 | #endif | |
71be2cbc | 2086 | if (force_on_match) { |
2087 | force_on_match = 0; | |
2088 | s = SvPV_force(TARG, len); | |
2089 | goto force_it; | |
2090 | } | |
71be2cbc | 2091 | d = s; |
3280af22 | 2092 | PL_curpm = pm; |
71be2cbc | 2093 | SvSCREAM_off(TARG); /* disable possible screamer */ |
2094 | if (once) { | |
48c036b1 | 2095 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d IZ |
2096 | m = orig + rx->startp[0]; |
2097 | d = orig + rx->endp[0]; | |
71be2cbc | 2098 | s = orig; |
2099 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2100 | if (clen) { | |
2101 | Copy(c, m, clen, char); | |
2102 | m += clen; | |
a0d0e21e | 2103 | } |
71be2cbc | 2104 | i = strend - d; |
2105 | if (i > 0) { | |
2106 | Move(d, m, i, char); | |
2107 | m += i; | |
a0d0e21e | 2108 | } |
71be2cbc | 2109 | *m = '\0'; |
2110 | SvCUR_set(TARG, m - s); | |
2111 | } | |
2112 | /*SUPPRESS 560*/ | |
155aba94 | 2113 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc | 2114 | d -= clen; |
2115 | m = d; | |
2116 | sv_chop(TARG, d-i); | |
2117 | s += i; | |
2118 | while (i--) | |
2119 | *--d = *--s; | |
2120 | if (clen) | |
2121 | Copy(c, m, clen, char); | |
2122 | } | |
2123 | else if (clen) { | |
2124 | d -= clen; | |
2125 | sv_chop(TARG, d); | |
2126 | Copy(c, d, clen, char); | |
2127 | } | |
2128 | else { | |
2129 | sv_chop(TARG, d); | |
2130 | } | |
48c036b1 | 2131 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2132 | SPAGAIN; |
3280af22 | 2133 | PUSHs(&PL_sv_yes); |
71be2cbc | 2134 | } |
2135 | else { | |
71be2cbc | 2136 | do { |
2137 | if (iters++ > maxiters) | |
cea2e8a9 | 2138 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2139 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2140 | m = rx->startp[0] + orig; |
71be2cbc | 2141 | /*SUPPRESS 560*/ |
155aba94 | 2142 | if ((i = m - s)) { |
71be2cbc | 2143 | if (s != d) |
2144 | Move(s, d, i, char); | |
2145 | d += i; | |
a0d0e21e | 2146 | } |
71be2cbc | 2147 | if (clen) { |
2148 | Copy(c, d, clen, char); | |
2149 | d += clen; | |
2150 | } | |
cf93c79d | 2151 | s = rx->endp[0] + orig; |
cea2e8a9 | 2152 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b IZ |
2153 | TARG, NULL, |
2154 | /* don't match same null twice */ | |
2155 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 2156 | if (s != d) { |
2157 | i = strend - s; | |
2158 | SvCUR_set(TARG, d - SvPVX(TARG) + i); | |
2159 | Move(s, d, i+1, char); /* include the NUL */ | |
a0d0e21e | 2160 | } |
48c036b1 | 2161 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2162 | SPAGAIN; |
71be2cbc | 2163 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e | 2164 | } |
80b498e0 | 2165 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 | 2166 | TAINT_IF(rxtainted); |
8ec5e241 NIS |
2167 | if (SvSMAGICAL(TARG)) { |
2168 | PUTBACK; | |
2169 | mg_set(TARG); | |
2170 | SPAGAIN; | |
2171 | } | |
9212bbba | 2172 | SvTAINT(TARG); |
aefe6dfc JH |
2173 | if (doutf8) |
2174 | SvUTF8_on(TARG); | |
71be2cbc | 2175 | LEAVE_SCOPE(oldsave); |
2176 | RETURN; | |
a0d0e21e | 2177 | } |
71be2cbc | 2178 | |
f722798b IZ |
2179 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2180 | r_flags | REXEC_CHECKED)) | |
2181 | { | |
a0d0e21e LW |
2182 | if (force_on_match) { |
2183 | force_on_match = 0; | |
2184 | s = SvPV_force(TARG, len); | |
2185 | goto force_it; | |
2186 | } | |
ed252734 NC |
2187 | #ifdef PERL_COPY_ON_WRITE |
2188 | have_a_cow: | |
2189 | #endif | |
48c036b1 | 2190 | rxtainted |= RX_MATCH_TAINTED(rx); |
8ec5e241 | 2191 | dstr = NEWSV(25, len); |
a0d0e21e | 2192 | sv_setpvn(dstr, m, s-m); |
ffc61ed2 JH |
2193 | if (DO_UTF8(TARG)) |
2194 | SvUTF8_on(dstr); | |
3280af22 | 2195 | PL_curpm = pm; |
a0d0e21e | 2196 | if (!c) { |
c09156bb | 2197 | register PERL_CONTEXT *cx; |
8ec5e241 | 2198 | SPAGAIN; |
d8f2cf8a | 2199 | ReREFCNT_inc(rx); |
a0d0e21e LW |
2200 | PUSHSUBST(cx); |
2201 | RETURNOP(cPMOP->op_pmreplroot); | |
2202 | } | |
cf93c79d | 2203 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2204 | do { |
2205 | if (iters++ > maxiters) | |
cea2e8a9 | 2206 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2207 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2208 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e LW |
2209 | m = s; |
2210 | s = orig; | |
cf93c79d | 2211 | orig = rx->subbeg; |
a0d0e21e LW |
2212 | s = orig + (m - s); |
2213 | strend = s + (strend - m); | |
2214 | } | |
cf93c79d | 2215 | m = rx->startp[0] + orig; |
db79b45b JH |
2216 | if (doutf8 && !SvUTF8(dstr)) |
2217 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); | |
2218 | else | |
2219 | sv_catpvn(dstr, s, m-s); | |
cf93c79d | 2220 | s = rx->endp[0] + orig; |
a0d0e21e LW |
2221 | if (clen) |
2222 | sv_catpvn(dstr, c, clen); | |
2223 | if (once) | |
2224 | break; | |
ffc61ed2 JH |
2225 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2226 | TARG, NULL, r_flags)); | |
db79b45b JH |
2227 | if (doutf8 && !DO_UTF8(TARG)) |
2228 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); | |
89afcb60 A |
2229 | else |
2230 | sv_catpvn(dstr, s, strend - s); | |
748a9306 | 2231 | |
ed252734 NC |
2232 | #ifdef PERL_COPY_ON_WRITE |
2233 | /* The match may make the string COW. If so, brilliant, because that's | |
2234 | just saved us one malloc, copy and free - the regexp has donated | |
2235 | the old buffer, and we malloc an entirely new one, rather than the | |
2236 | regexp malloc()ing a buffer and copying our original, only for | |
2237 | us to throw it away here during the substitution. */ | |
2238 | if (SvIsCOW(TARG)) { | |
2239 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
2240 | } else | |
2241 | #endif | |
2242 | { | |
2243 | (void)SvOOK_off(TARG); | |
2244 | if (SvLEN(TARG)) | |
2245 | Safefree(SvPVX(TARG)); | |
2246 | } | |
748a9306 LW |
2247 | SvPVX(TARG) = SvPVX(dstr); |
2248 | SvCUR_set(TARG, SvCUR(dstr)); | |
2249 | SvLEN_set(TARG, SvLEN(dstr)); | |
f272994b | 2250 | doutf8 |= DO_UTF8(dstr); |
748a9306 LW |
2251 | SvPVX(dstr) = 0; |
2252 | sv_free(dstr); | |
2253 | ||
48c036b1 | 2254 | TAINT_IF(rxtainted & 1); |
f878fbec | 2255 | SPAGAIN; |
48c036b1 GS |
2256 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2257 | ||
a0d0e21e | 2258 | (void)SvPOK_only(TARG); |
f272994b | 2259 | if (doutf8) |
60aeb6fd | 2260 | SvUTF8_on(TARG); |
48c036b1 | 2261 | TAINT_IF(rxtainted); |
a0d0e21e | 2262 | SvSETMAGIC(TARG); |
9212bbba | 2263 | SvTAINT(TARG); |
4633a7c4 | 2264 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2265 | RETURN; |
2266 | } | |
5cd24f17 | 2267 | goto ret_no; |
a0d0e21e LW |
2268 | |
2269 | nope: | |
1c846c1f | 2270 | ret_no: |
8ec5e241 | 2271 | SPAGAIN; |
3280af22 | 2272 | PUSHs(&PL_sv_no); |
4633a7c4 | 2273 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2274 | RETURN; |
2275 | } | |
2276 | ||
2277 | PP(pp_grepwhile) | |
2278 | { | |
39644a26 | 2279 | dSP; |
a0d0e21e LW |
2280 | |
2281 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2282 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2283 | ++*PL_markstack_ptr; | |
a0d0e21e LW |
2284 | LEAVE; /* exit inner scope */ |
2285 | ||
2286 | /* All done yet? */ | |
3280af22 | 2287 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2288 | I32 items; |
54310121 | 2289 | I32 gimme = GIMME_V; |
a0d0e21e LW |
2290 | |
2291 | LEAVE; /* exit outer scope */ | |
2292 | (void)POPMARK; /* pop src */ | |
3280af22 | 2293 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2294 | (void)POPMARK; /* pop dst */ |
3280af22 | 2295 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2296 | if (gimme == G_SCALAR) { |
7cc47870 RGS |
2297 | if (PL_op->op_private & OPpGREP_LEX) { |
2298 | SV* sv = sv_newmortal(); | |
2299 | sv_setiv(sv, items); | |
2300 | PUSHs(sv); | |
2301 | } | |
2302 | else { | |
2303 | dTARGET; | |
2304 | XPUSHi(items); | |
2305 | } | |
a0d0e21e | 2306 | } |
54310121 | 2307 | else if (gimme == G_ARRAY) |
2308 | SP += items; | |
a0d0e21e LW |
2309 | RETURN; |
2310 | } | |
2311 | else { | |
2312 | SV *src; | |
2313 | ||
2314 | ENTER; /* enter inner scope */ | |
1d7c1841 | 2315 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2316 | |
3280af22 | 2317 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2318 | SvTEMP_off(src); |
59f00321 RGS |
2319 | if (PL_op->op_private & OPpGREP_LEX) |
2320 | PAD_SVl(PL_op->op_targ) = src; | |
2321 | else | |
2322 | DEFSV = src; | |
a0d0e21e LW |
2323 | |
2324 | RETURNOP(cLOGOP->op_other); | |
2325 | } | |
2326 | } | |
2327 | ||
2328 | PP(pp_leavesub) | |
2329 | { | |
39644a26 | 2330 | dSP; |
a0d0e21e LW |
2331 | SV **mark; |
2332 | SV **newsp; | |
2333 | PMOP *newpm; | |
2334 | I32 gimme; | |
c09156bb | 2335 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2336 | SV *sv; |
a0d0e21e LW |
2337 | |
2338 | POPBLOCK(cx,newpm); | |
5dd42e15 | 2339 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2340 | |
a1f49e72 | 2341 | TAINT_NOT; |
a0d0e21e LW |
2342 | if (gimme == G_SCALAR) { |
2343 | MARK = newsp + 1; | |
a29cdaf0 | 2344 | if (MARK <= SP) { |
a8bba7fa | 2345 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 IZ |
2346 | if (SvTEMP(TOPs)) { |
2347 | *MARK = SvREFCNT_inc(TOPs); | |
2348 | FREETMPS; | |
2349 | sv_2mortal(*MARK); | |
cd06dffe GS |
2350 | } |
2351 | else { | |
959e3673 | 2352 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2353 | FREETMPS; |
959e3673 GS |
2354 | *MARK = sv_mortalcopy(sv); |
2355 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2356 | } |
cd06dffe GS |
2357 | } |
2358 | else | |
a29cdaf0 | 2359 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe GS |
2360 | } |
2361 | else { | |
f86702cc | 2362 | MEXTEND(MARK, 0); |
3280af22 | 2363 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2364 | } |
2365 | SP = MARK; | |
2366 | } | |
54310121 | 2367 | else if (gimme == G_ARRAY) { |
f86702cc | 2368 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 | 2369 | if (!SvTEMP(*MARK)) { |
f86702cc | 2370 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2371 | TAINT_NOT; /* Each item is independent */ |
2372 | } | |
f86702cc | 2373 | } |
a0d0e21e | 2374 | } |
f86702cc | 2375 | PUTBACK; |
1c846c1f | 2376 | |
5dd42e15 DM |
2377 | LEAVE; |
2378 | cxstack_ix--; | |
b0d9ce38 | 2379 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2380 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2381 | |
b0d9ce38 | 2382 | LEAVESUB(sv); |
a0d0e21e LW |
2383 | return pop_return(); |
2384 | } | |
2385 | ||
cd06dffe GS |
2386 | /* This duplicates the above code because the above code must not |
2387 | * get any slower by more conditions */ | |
2388 | PP(pp_leavesublv) | |
2389 | { | |
39644a26 | 2390 | dSP; |
cd06dffe GS |
2391 | SV **mark; |
2392 | SV **newsp; | |
2393 | PMOP *newpm; | |
2394 | I32 gimme; | |
2395 | register PERL_CONTEXT *cx; | |
b0d9ce38 | 2396 | SV *sv; |
cd06dffe GS |
2397 | |
2398 | POPBLOCK(cx,newpm); | |
5dd42e15 | 2399 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2400 | |
cd06dffe GS |
2401 | TAINT_NOT; |
2402 | ||
2403 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { | |
2404 | /* We are an argument to a function or grep(). | |
2405 | * This kind of lvalueness was legal before lvalue | |
2406 | * subroutines too, so be backward compatible: | |
2407 | * cannot report errors. */ | |
2408 | ||
2409 | /* Scalar context *is* possible, on the LHS of -> only, | |
2410 | * as in f()->meth(). But this is not an lvalue. */ | |
2411 | if (gimme == G_SCALAR) | |
2412 | goto temporise; | |
2413 | if (gimme == G_ARRAY) { | |
a8bba7fa | 2414 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe GS |
2415 | goto temporise_array; |
2416 | EXTEND_MORTAL(SP - newsp); | |
2417 | for (mark = newsp + 1; mark <= SP; mark++) { | |
2418 | if (SvTEMP(*mark)) | |
2419 | /* empty */ ; | |
2420 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) | |
2421 | *mark = sv_mortalcopy(*mark); | |
2422 | else { | |
2423 | /* Can be a localized value subject to deletion. */ | |
2424 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2425 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2426 | } |
2427 | } | |
2428 | } | |
2429 | } | |
2430 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ | |
2431 | /* Here we go for robustness, not for speed, so we change all | |
2432 | * the refcounts so the caller gets a live guy. Cannot set | |
2433 | * TEMP, so sv_2mortal is out of question. */ | |
a8bba7fa | 2434 | if (!CvLVALUE(cx->blk_sub.cv)) { |
5dd42e15 DM |
2435 | LEAVE; |
2436 | cxstack_ix--; | |
b0d9ce38 | 2437 | POPSUB(cx,sv); |
d470f89e | 2438 | PL_curpm = newpm; |
b0d9ce38 | 2439 | LEAVESUB(sv); |
d470f89e GS |
2440 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2441 | } | |
cd06dffe GS |
2442 | if (gimme == G_SCALAR) { |
2443 | MARK = newsp + 1; | |
2444 | EXTEND_MORTAL(1); | |
2445 | if (MARK == SP) { | |
d470f89e | 2446 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
5dd42e15 DM |
2447 | LEAVE; |
2448 | cxstack_ix--; | |
b0d9ce38 | 2449 | POPSUB(cx,sv); |
d470f89e | 2450 | PL_curpm = newpm; |
b0d9ce38 | 2451 | LEAVESUB(sv); |
e9f19e3c HS |
2452 | DIE(aTHX_ "Can't return %s from lvalue subroutine", |
2453 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" | |
2454 | : "a readonly value" : "a temporary"); | |
d470f89e | 2455 | } |
cd06dffe GS |
2456 | else { /* Can be a localized value |
2457 | * subject to deletion. */ | |
2458 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2459 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2460 | } |
2461 | } | |
d470f89e | 2462 | else { /* Should not happen? */ |
5dd42e15 DM |
2463 | LEAVE; |
2464 | cxstack_ix--; | |
b0d9ce38 | 2465 | POPSUB(cx,sv); |
d470f89e | 2466 | PL_curpm = newpm; |
b0d9ce38 | 2467 | LEAVESUB(sv); |
d470f89e | 2468 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe | 2469 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e | 2470 | } |
cd06dffe GS |
2471 | SP = MARK; |
2472 | } | |
2473 | else if (gimme == G_ARRAY) { | |
2474 | EXTEND_MORTAL(SP - newsp); | |
2475 | for (mark = newsp + 1; mark <= SP; mark++) { | |
f206cdda AMS |
2476 | if (*mark != &PL_sv_undef |
2477 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { | |
d470f89e GS |
2478 | /* Might be flattened array after $#array = */ |
2479 | PUTBACK; | |
5dd42e15 DM |
2480 | LEAVE; |
2481 | cxstack_ix--; | |
b0d9ce38 | 2482 | POPSUB(cx,sv); |
d470f89e | 2483 | PL_curpm = newpm; |
b0d9ce38 | 2484 | LEAVESUB(sv); |
f206cdda AMS |
2485 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2486 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
d470f89e | 2487 | } |
cd06dffe | 2488 | else { |
cd06dffe GS |
2489 | /* Can be a localized value subject to deletion. */ |
2490 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2491 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2492 | } |
2493 | } | |
2494 | } | |
2495 | } | |
2496 | else { | |
2497 | if (gimme == G_SCALAR) { | |
2498 | temporise: | |
2499 | MARK = newsp + 1; | |
2500 | if (MARK <= SP) { | |
a8bba7fa | 2501 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe GS |
2502 | if (SvTEMP(TOPs)) { |
2503 | *MARK = SvREFCNT_inc(TOPs); | |
2504 | FREETMPS; | |
2505 | sv_2mortal(*MARK); | |
2506 | } | |
2507 | else { | |
959e3673 | 2508 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe | 2509 | FREETMPS; |
959e3673 GS |
2510 | *MARK = sv_mortalcopy(sv); |
2511 | SvREFCNT_dec(sv); | |
cd06dffe GS |
2512 | } |
2513 | } | |
2514 | else | |
2515 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
2516 | } | |
2517 | else { | |
2518 | MEXTEND(MARK, 0); | |
2519 | *MARK = &PL_sv_undef; | |
2520 | } | |
2521 | SP = MARK; | |
2522 | } | |
2523 | else if (gimme == G_ARRAY) { | |
2524 | temporise_array: | |
2525 | for (MARK = newsp + 1; MARK <= SP; MARK++) { | |
2526 | if (!SvTEMP(*MARK)) { | |
2527 | *MARK = sv_mortalcopy(*MARK); | |
2528 | TAINT_NOT; /* Each item is independent */ | |
2529 | } | |
2530 | } | |
2531 | } | |
2532 | } | |
2533 | PUTBACK; | |
1c846c1f | 2534 | |
5dd42e15 DM |
2535 | LEAVE; |
2536 | cxstack_ix--; | |
b0d9ce38 | 2537 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe GS |
2538 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2539 | ||
b0d9ce38 | 2540 | LEAVESUB(sv); |
cd06dffe GS |
2541 | return pop_return(); |
2542 | } | |
2543 | ||
2544 | ||
76e3520e | 2545 | STATIC CV * |
cea2e8a9 | 2546 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 | 2547 | { |
3280af22 | 2548 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 GS |
2549 | |
2550 | if (!PERLDB_SUB_NN) { | |
2551 | GV *gv = CvGV(cv); | |
2552 | ||
2553 | save_item(dbsv); | |
2554 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) | |
1c846c1f | 2555 | || strEQ(GvNAME(gv), "END") |
491527d0 GS |
2556 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
2557 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) | |
2558 | && (gv = (GV*)*svp) ))) { | |
2559 | /* Use GV from the stack as a fallback. */ | |
2560 | /* GV is potentially non-unique, or contain different CV. */ | |
c2e66d9e GS |
2561 | SV *tmp = newRV((SV*)cv); |
2562 | sv_setsv(dbsv, tmp); | |
2563 | SvREFCNT_dec(tmp); | |
491527d0 GS |
2564 | } |
2565 | else { | |
2566 | gv_efullname3(dbsv, gv, Nullch); | |
2567 | } | |
3de9ffa1 MB |
2568 | } |
2569 | else { | |
155aba94 GS |
2570 | (void)SvUPGRADE(dbsv, SVt_PVIV); |
2571 | (void)SvIOK_on(dbsv); | |
491527d0 | 2572 | SAVEIV(SvIVX(dbsv)); |
5bc28da9 | 2573 | SvIVX(dbsv) = PTR2IV(cv); /* Do it the quickest way */ |
3de9ffa1 | 2574 | } |
491527d0 | 2575 | |
3de9ffa1 | 2576 | if (CvXSUB(cv)) |
3280af22 NIS |
2577 | PL_curcopdb = PL_curcop; |
2578 | cv = GvCV(PL_DBsub); | |
3de9ffa1 MB |
2579 | return cv; |
2580 | } | |
2581 | ||
a0d0e21e LW |
2582 | PP(pp_entersub) |
2583 | { | |
39644a26 | 2584 | dSP; dPOPss; |
a0d0e21e LW |
2585 | GV *gv; |
2586 | HV *stash; | |
2587 | register CV *cv; | |
c09156bb | 2588 | register PERL_CONTEXT *cx; |
5d94fbed | 2589 | I32 gimme; |
533c011a | 2590 | bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2591 | |
2592 | if (!sv) | |
cea2e8a9 | 2593 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e | 2594 | switch (SvTYPE(sv)) { |
f1025168 NC |
2595 | /* This is overwhelming the most common case: */ |
2596 | case SVt_PVGV: | |
2597 | if (!(cv = GvCVu((GV*)sv))) | |
2598 | cv = sv_2cv(sv, &stash, &gv, FALSE); | |
2599 | if (!cv) { | |
2600 | ENTER; | |
2601 | SAVETMPS; | |
2602 | goto try_autoload; | |
2603 | } | |
2604 | break; | |
a0d0e21e LW |
2605 | default: |
2606 | if (!SvROK(sv)) { | |
748a9306 | 2607 | char *sym; |
2d8e6c8d | 2608 | STRLEN n_a; |
748a9306 | 2609 | |
3280af22 | 2610 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a | 2611 | if (hasargs) |
3280af22 | 2612 | SP = PL_stack_base + POPMARK; |
a0d0e21e | 2613 | RETURN; |
fb73857a | 2614 | } |
15ff848f CS |
2615 | if (SvGMAGICAL(sv)) { |
2616 | mg_get(sv); | |
f5f1d18e AMS |
2617 | if (SvROK(sv)) |
2618 | goto got_rv; | |
15ff848f CS |
2619 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; |
2620 | } | |
2621 | else | |
2d8e6c8d | 2622 | sym = SvPV(sv, n_a); |
15ff848f | 2623 | if (!sym) |
cea2e8a9 | 2624 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2625 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 | 2626 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 | 2627 | cv = get_cv(sym, TRUE); |
a0d0e21e LW |
2628 | break; |
2629 | } | |
f5f1d18e | 2630 | got_rv: |
f5284f61 IZ |
2631 | { |
2632 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ | |
2633 | tryAMAGICunDEREF(to_cv); | |
2634 | } | |
a0d0e21e LW |
2635 | cv = (CV*)SvRV(sv); |
2636 | if (SvTYPE(cv) == SVt_PVCV) | |
2637 | break; | |
2638 | /* FALL THROUGH */ | |
2639 | case SVt_PVHV: | |
2640 | case SVt_PVAV: | |
cea2e8a9 | 2641 | DIE(aTHX_ "Not a CODE reference"); |
f1025168 | 2642 | /* This is the second most common case: */ |
a0d0e21e LW |
2643 | case SVt_PVCV: |
2644 | cv = (CV*)sv; | |
2645 | break; | |
a0d0e21e LW |
2646 | } |
2647 | ||
2648 | ENTER; | |
2649 | SAVETMPS; | |
2650 | ||
2651 | retry: | |
a0d0e21e | 2652 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
f1025168 | 2653 | goto fooey; |
a0d0e21e LW |
2654 | } |
2655 | ||
54310121 | 2656 | gimme = GIMME_V; |
67caa1fe | 2657 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
06492da6 SF |
2658 | if (CvASSERTION(cv) && PL_DBassertion) |
2659 | sv_setiv(PL_DBassertion, 1); | |
2660 | ||
4f01c5a5 | 2661 | cv = get_db_sub(&sv, cv); |
67caa1fe | 2662 | if (!cv) |
cea2e8a9 | 2663 | DIE(aTHX_ "No DBsub routine"); |
67caa1fe | 2664 | } |
a0d0e21e | 2665 | |
f1025168 NC |
2666 | if (!(CvXSUB(cv))) { |
2667 | /* This path taken at least 75% of the time */ | |
a0d0e21e LW |
2668 | dMARK; |
2669 | register I32 items = SP - MARK; | |
a0d0e21e | 2670 | AV* padlist = CvPADLIST(cv); |
533c011a | 2671 | push_return(PL_op->op_next); |
a0d0e21e LW |
2672 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2673 | PUSHSUB(cx); | |
2674 | CvDEPTH(cv)++; | |
6b35e009 GS |
2675 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2676 | * that eval'' ops within this sub know the correct lexical space. | |
a3985cdc DM |
2677 | * Owing the speed considerations, we choose instead to search for |
2678 | * the cv using find_runcv() when calling doeval(). | |
6b35e009 | 2679 | */ |
b36bdeca | 2680 | if (CvDEPTH(cv) >= 2) { |
1d7c1841 | 2681 | PERL_STACK_OVERFLOW_CHECK(); |
dd2155a4 | 2682 | pad_push(padlist, CvDEPTH(cv), 1); |
a0d0e21e | 2683 | } |
dd2155a4 | 2684 | PAD_SET_CUR(padlist, CvDEPTH(cv)); |
6d4ff0d2 | 2685 | if (hasargs) |
6d4ff0d2 MB |
2686 | { |
2687 | AV* av; | |
a0d0e21e LW |
2688 | SV** ary; |
2689 | ||
77a005ab | 2690 | #if 0 |
bf49b057 | 2691 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2692 | "%p entersub preparing @_\n", thr)); |
77a005ab | 2693 | #endif |
dd2155a4 | 2694 | av = (AV*)PAD_SVl(0); |
221373f0 GS |
2695 | if (AvREAL(av)) { |
2696 | /* @_ is normally not REAL--this should only ever | |
2697 | * happen when DB::sub() calls things that modify @_ */ | |
2698 | av_clear(av); | |
2699 | AvREAL_off(av); | |
2700 | AvREIFY_on(av); | |
2701 | } | |
3280af22 NIS |
2702 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2703 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); | |
dd2155a4 | 2704 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2705 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2706 | ++MARK; |
2707 | ||
2708 | if (items > AvMAX(av) + 1) { | |
2709 | ary = AvALLOC(av); | |
2710 | if (AvARRAY(av) != ary) { | |
2711 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
2712 | SvPVX(av) = (char*)ary; | |
2713 | } | |
2714 | if (items > AvMAX(av) + 1) { | |
2715 | AvMAX(av) = items - 1; | |
2716 | Renew(ary,items,SV*); | |
2717 | AvALLOC(av) = ary; | |
2718 | SvPVX(av) = (char*)ary; | |
2719 | } | |
2720 | } | |
2721 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2722 | AvFILLp(av) = items - 1; |
1c846c1f | 2723 | |
a0d0e21e LW |
2724 | while (items--) { |
2725 | if (*MARK) | |
2726 | SvTEMP_off(*MARK); | |
2727 | MARK++; | |
2728 | } | |
2729 | } | |
4a925ff6 GS |
2730 | /* warning must come *after* we fully set up the context |
2731 | * stuff so that __WARN__ handlers can safely dounwind() | |
2732 | * if they want to | |
2733 | */ | |
2734 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) | |
2735 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) | |
2736 | sub_crush_depth(cv); | |
77a005ab | 2737 | #if 0 |
bf49b057 | 2738 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2739 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab | 2740 | #endif |
a0d0e21e LW |
2741 | RETURNOP(CvSTART(cv)); |
2742 | } | |
f1025168 NC |
2743 | else { |
2744 | #ifdef PERL_XSUB_OLDSTYLE | |
2745 | if (CvOLDSTYLE(cv)) { | |
2746 | I32 (*fp3)(int,int,int); | |
2747 | dMARK; | |
2748 | register I32 items = SP - MARK; | |
2749 | /* We dont worry to copy from @_. */ | |
2750 | while (SP > mark) { | |
2751 | SP[1] = SP[0]; | |
2752 | SP--; | |
2753 | } | |
2754 | PL_stack_sp = mark + 1; | |
2755 | fp3 = (I32(*)(int,int,int))CvXSUB(cv); | |
2756 | items = (*fp3)(CvXSUBANY(cv).any_i32, | |
2757 | MARK - PL_stack_base + 1, | |
2758 | items); | |
2759 | PL_stack_sp = PL_stack_base + items; | |
2760 | } | |
2761 | else | |
2762 | #endif /* PERL_XSUB_OLDSTYLE */ | |
2763 | { | |
2764 | I32 markix = TOPMARK; | |
2765 | ||
2766 | PUTBACK; | |
2767 | ||
2768 | if (!hasargs) { | |
2769 | /* Need to copy @_ to stack. Alternative may be to | |
2770 | * switch stack to @_, and copy return values | |
2771 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
2772 | AV* av; | |
2773 | I32 items; | |
2774 | av = GvAV(PL_defgv); | |
2775 | items = AvFILLp(av) + 1; /* @_ is not tieable */ | |
2776 | ||
2777 | if (items) { | |
2778 | /* Mark is at the end of the stack. */ | |
2779 | EXTEND(SP, items); | |
2780 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2781 | SP += items; | |
2782 | PUTBACK ; | |
2783 | } | |
2784 | } | |
2785 | /* We assume first XSUB in &DB::sub is the called one. */ | |
2786 | if (PL_curcopdb) { | |
2787 | SAVEVPTR(PL_curcop); | |
2788 | PL_curcop = PL_curcopdb; | |
2789 | PL_curcopdb = NULL; | |
2790 | } | |
2791 | /* Do we need to open block here? XXXX */ | |
2792 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
2793 | ||
2794 | /* Enforce some sanity in scalar context. */ | |
2795 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { | |
2796 | if (markix > PL_stack_sp - PL_stack_base) | |
2797 | *(PL_stack_base + markix) = &PL_sv_undef; | |
2798 | else | |
2799 | *(PL_stack_base + markix) = *PL_stack_sp; | |
2800 | PL_stack_sp = PL_stack_base + markix; | |
2801 | } | |
2802 | } | |
2803 | LEAVE; | |
2804 | return NORMAL; | |
2805 | } | |
2806 | ||
2807 | assert (0); /* Cannot get here. */ | |
2808 | /* This is deliberately moved here as spaghetti code to keep it out of the | |
2809 | hot path. */ | |
2810 | { | |
2811 | GV* autogv; | |
2812 | SV* sub_name; | |
2813 | ||
2814 | fooey: | |
2815 | /* anonymous or undef'd function leaves us no recourse */ | |
2816 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
2817 | DIE(aTHX_ "Undefined subroutine called"); | |
2818 | ||
2819 | /* autoloaded stub? */ | |
2820 | if (cv != GvCV(gv)) { | |
2821 | cv = GvCV(gv); | |
2822 | } | |
2823 | /* should call AUTOLOAD now? */ | |
2824 | else { | |
2825 | try_autoload: | |
2826 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), | |
2827 | FALSE))) | |
2828 | { | |
2829 | cv = GvCV(autogv); | |
2830 | } | |
2831 | /* sorry */ | |
2832 | else { | |
2833 | sub_name = sv_newmortal(); | |
2834 | gv_efullname3(sub_name, gv, Nullch); | |
35c1215d | 2835 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", sub_name); |
f1025168 NC |
2836 | } |
2837 | } | |
2838 | if (!cv) | |
2839 | DIE(aTHX_ "Not a CODE reference"); | |
2840 | goto retry; | |
2841 | } | |
a0d0e21e LW |
2842 | } |
2843 | ||
44a8e56a | 2844 | void |
864dbfa3 | 2845 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2846 | { |
2847 | if (CvANON(cv)) | |
9014280d | 2848 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 2849 | else { |
2850 | SV* tmpstr = sv_newmortal(); | |
2851 | gv_efullname3(tmpstr, CvGV(cv), Nullch); | |
35c1215d NC |
2852 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
2853 | tmpstr); | |
44a8e56a | 2854 | } |
2855 | } | |
2856 | ||
a0d0e21e LW |
2857 | PP(pp_aelem) |
2858 | { | |
39644a26 | 2859 | dSP; |
a0d0e21e | 2860 | SV** svp; |
d804643f SC |
2861 | SV* elemsv = POPs; |
2862 | IV elem = SvIV(elemsv); | |
68dc0745 | 2863 | AV* av = (AV*)POPs; |
78f9721b | 2864 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a | 2865 | U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av)); |
be6c24e0 | 2866 | SV *sv; |
a0d0e21e | 2867 | |
e35c1634 | 2868 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
35c1215d | 2869 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Use of reference \"%"SVf"\" as array index", elemsv); |
748a9306 | 2870 | if (elem > 0) |
3280af22 | 2871 | elem -= PL_curcop->cop_arybase; |
a0d0e21e LW |
2872 | if (SvTYPE(av) != SVt_PVAV) |
2873 | RETPUSHUNDEF; | |
68dc0745 | 2874 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2875 | if (lval) { |
3280af22 | 2876 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 2877 | SV* lv; |
2878 | if (!defer) | |
cea2e8a9 | 2879 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 2880 | lv = sv_newmortal(); |
2881 | sv_upgrade(lv, SVt_PVLV); | |
2882 | LvTYPE(lv) = 'y'; | |
14befaf4 | 2883 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 | 2884 | LvTARG(lv) = SvREFCNT_inc(av); |
2885 | LvTARGOFF(lv) = elem; | |
2886 | LvTARGLEN(lv) = 1; | |
2887 | PUSHs(lv); | |
2888 | RETURN; | |
2889 | } | |
bfc4de9f | 2890 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 | 2891 | save_aelem(av, elem, svp); |
533c011a NIS |
2892 | else if (PL_op->op_private & OPpDEREF) |
2893 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 2894 | } |
3280af22 | 2895 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
2896 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2897 | sv = sv_mortalcopy(sv); | |
2898 | PUSHs(sv); | |
a0d0e21e LW |
2899 | RETURN; |
2900 | } | |
2901 | ||
02a9e968 | 2902 | void |
864dbfa3 | 2903 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 CS |
2904 | { |
2905 | if (SvGMAGICAL(sv)) | |
2906 | mg_get(sv); | |
2907 | if (!SvOK(sv)) { | |
2908 | if (SvREADONLY(sv)) | |
cea2e8a9 | 2909 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc | 2910 | if (SvTYPE(sv) < SVt_RV) |
2911 | sv_upgrade(sv, SVt_RV); | |
2912 | else if (SvTYPE(sv) >= SVt_PV) { | |
2913 | (void)SvOOK_off(sv); | |
2914 | Safefree(SvPVX(sv)); | |
2915 | SvLEN(sv) = SvCUR(sv) = 0; | |
2916 | } | |
68dc0745 | 2917 | switch (to_what) { |
5f05dabc | 2918 | case OPpDEREF_SV: |
8c52afec | 2919 | SvRV(sv) = NEWSV(355,0); |
5f05dabc | 2920 | break; |
2921 | case OPpDEREF_AV: | |
2922 | SvRV(sv) = (SV*)newAV(); | |
2923 | break; | |
2924 | case OPpDEREF_HV: | |
2925 | SvRV(sv) = (SV*)newHV(); | |
2926 | break; | |
2927 | } | |
02a9e968 CS |
2928 | SvROK_on(sv); |
2929 | SvSETMAGIC(sv); | |
2930 | } | |
2931 | } | |
2932 | ||
a0d0e21e LW |
2933 | PP(pp_method) |
2934 | { | |
39644a26 | 2935 | dSP; |
f5d5a27c CS |
2936 | SV* sv = TOPs; |
2937 | ||
2938 | if (SvROK(sv)) { | |
eda383f2 | 2939 | SV* rsv = SvRV(sv); |
f5d5a27c CS |
2940 | if (SvTYPE(rsv) == SVt_PVCV) { |
2941 | SETs(rsv); | |
2942 | RETURN; | |
2943 | } | |
2944 | } | |
2945 | ||
2946 | SETs(method_common(sv, Null(U32*))); | |
2947 | RETURN; | |
2948 | } | |
2949 | ||
2950 | PP(pp_method_named) | |
2951 | { | |
39644a26 | 2952 | dSP; |
3848b962 | 2953 | SV* sv = cSVOP_sv; |
f5d5a27c CS |
2954 | U32 hash = SvUVX(sv); |
2955 | ||
2956 | XPUSHs(method_common(sv, &hash)); | |
2957 | RETURN; | |
2958 | } | |
2959 | ||
2960 | STATIC SV * | |
2961 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
2962 | { | |
a0d0e21e LW |
2963 | SV* sv; |
2964 | SV* ob; | |
2965 | GV* gv; | |
56304f61 CS |
2966 | HV* stash; |
2967 | char* name; | |
f5d5a27c | 2968 | STRLEN namelen; |
9c5ffd7c | 2969 | char* packname = 0; |
0dae17bd | 2970 | SV *packsv = Nullsv; |
ac91690f | 2971 | STRLEN packlen; |
a0d0e21e | 2972 | |
f5d5a27c | 2973 | name = SvPV(meth, namelen); |
3280af22 | 2974 | sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c | 2975 | |
4f1b7578 SC |
2976 | if (!sv) |
2977 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); | |
2978 | ||
16d20bd9 | 2979 | if (SvGMAGICAL(sv)) |
af09ea45 | 2980 | mg_get(sv); |
a0d0e21e | 2981 | if (SvROK(sv)) |
16d20bd9 | 2982 | ob = (SV*)SvRV(sv); |
a0d0e21e LW |
2983 | else { |
2984 | GV* iogv; | |
a0d0e21e | 2985 | |
af09ea45 | 2986 | /* this isn't a reference */ |
56304f61 | 2987 | packname = Nullch; |
081fc587 AB |
2988 | |
2989 | if(SvOK(sv) && (packname = SvPV(sv, packlen))) { | |
7e8961ec AB |
2990 | HE* he; |
2991 | he = hv_fetch_ent(PL_stashcache, sv, 0, 0); | |
081fc587 | 2992 | if (he) { |
5e6396ae | 2993 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
081fc587 AB |
2994 | goto fetch; |
2995 | } | |
2996 | } | |
2997 | ||
a0d0e21e | 2998 | if (!SvOK(sv) || |
05f5af9a | 2999 | !(packname) || |
a0d0e21e LW |
3000 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
3001 | !(ob=(SV*)GvIO(iogv))) | |
3002 | { | |
af09ea45 | 3003 | /* this isn't the name of a filehandle either */ |
1c846c1f | 3004 | if (!packname || |
fd400ab9 | 3005 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 3006 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
3007 | : !isIDFIRST(*packname) |
3008 | )) | |
3009 | { | |
f5d5a27c CS |
3010 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
3011 | SvOK(sv) ? "without a package or object reference" | |
3012 | : "on an undefined value"); | |
834a4ddd | 3013 | } |
af09ea45 IK |
3014 | /* assume it's a package name */ |
3015 | stash = gv_stashpvn(packname, packlen, FALSE); | |
0dae17bd GS |
3016 | if (!stash) |
3017 | packsv = sv; | |
081fc587 | 3018 | else { |
5e6396ae | 3019 | SV* ref = newSViv(PTR2IV(stash)); |
7e8961ec AB |
3020 | hv_store(PL_stashcache, packname, packlen, ref, 0); |
3021 | } | |
ac91690f | 3022 | goto fetch; |
a0d0e21e | 3023 | } |
af09ea45 | 3024 | /* it _is_ a filehandle name -- replace with a reference */ |
3280af22 | 3025 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e LW |
3026 | } |
3027 | ||
af09ea45 | 3028 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 GS |
3029 | if (!ob || !(SvOBJECT(ob) |
3030 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) | |
3031 | && SvOBJECT(ob)))) | |
3032 | { | |
f5d5a27c CS |
3033 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
3034 | name); | |
f0d43078 | 3035 | } |
a0d0e21e | 3036 | |
56304f61 | 3037 | stash = SvSTASH(ob); |
a0d0e21e | 3038 | |
ac91690f | 3039 | fetch: |
af09ea45 IK |
3040 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3041 | gv_fetchmethod can cope (it seems they can) */ | |
3042 | ||
f5d5a27c CS |
3043 | /* shortcut for simple names */ |
3044 | if (hashp) { | |
3045 | HE* he = hv_fetch_ent(stash, meth, 0, *hashp); | |
3046 | if (he) { | |
3047 | gv = (GV*)HeVAL(he); | |
3048 | if (isGV(gv) && GvCV(gv) && | |
3049 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) | |
3050 | return (SV*)GvCV(gv); | |
3051 | } | |
3052 | } | |
3053 | ||
0dae17bd | 3054 | gv = gv_fetchmethod(stash ? stash : (HV*)packsv, name); |
af09ea45 | 3055 | |
56304f61 | 3056 | if (!gv) { |
af09ea45 IK |
3057 | /* This code tries to figure out just what went wrong with |
3058 | gv_fetchmethod. It therefore needs to duplicate a lot of | |
3059 | the internals of that function. We can't move it inside | |
3060 | Perl_gv_fetchmethod_autoload(), however, since that would | |
3061 | cause UNIVERSAL->can("NoSuchPackage::foo") to croak, and we | |
3062 | don't want that. | |
3063 | */ | |
56304f61 CS |
3064 | char* leaf = name; |
3065 | char* sep = Nullch; | |
3066 | char* p; | |
3067 | ||
3068 | for (p = name; *p; p++) { | |
3069 | if (*p == '\'') | |
3070 | sep = p, leaf = p + 1; | |
3071 | else if (*p == ':' && *(p + 1) == ':') | |
3072 | sep = p, leaf = p + 2; | |
3073 | } | |
3074 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { | |
af09ea45 IK |
3075 | /* the method name is unqualified or starts with SUPER:: */ |
3076 | packname = sep ? CopSTASHPV(PL_curcop) : | |
3077 | stash ? HvNAME(stash) : packname; | |
e27ad1f2 AV |
3078 | if (!packname) |
3079 | Perl_croak(aTHX_ | |
3080 | "Can't use anonymous symbol table for method lookup"); | |
3081 | else | |
3082 | packlen = strlen(packname); | |
56304f61 CS |
3083 | } |
3084 | else { | |
af09ea45 | 3085 | /* the method name is qualified */ |
56304f61 CS |
3086 | packname = name; |
3087 | packlen = sep - name; | |
3088 | } | |
af09ea45 IK |
3089 | |
3090 | /* we're relying on gv_fetchmethod not autovivifying the stash */ | |
3091 | if (gv_stashpvn(packname, packlen, FALSE)) { | |
c1899e02 | 3092 | Perl_croak(aTHX_ |
af09ea45 IK |
3093 | "Can't locate object method \"%s\" via package \"%.*s\"", |
3094 | leaf, (int)packlen, packname); | |
c1899e02 GS |
3095 | } |
3096 | else { | |
3097 | Perl_croak(aTHX_ | |
af09ea45 IK |
3098 | "Can't locate object method \"%s\" via package \"%.*s\"" |
3099 | " (perhaps you forgot to load \"%.*s\"?)", | |
3100 | leaf, (int)packlen, packname, (int)packlen, packname); | |
c1899e02 | 3101 | } |
56304f61 | 3102 | } |
f5d5a27c | 3103 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e | 3104 | } |