Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
241d1a3b | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 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 | ||
166f8a29 DM |
19 | /* This file contains 'hot' pp ("push/pop") functions that |
20 | * execute the opcodes that make up a perl program. A typical pp function | |
21 | * expects to find its arguments on the stack, and usually pushes its | |
22 | * results onto the stack, hence the 'pp' terminology. Each OP structure | |
23 | * contains a pointer to the relevant pp_foo() function. | |
24 | * | |
25 | * By 'hot', we mean common ops whose execution speed is critical. | |
26 | * By gathering them together into a single file, we encourage | |
27 | * CPU cache hits on hot code. Also it could be taken as a warning not to | |
28 | * change any code in this file unless you're sure it won't affect | |
29 | * performance. | |
30 | */ | |
31 | ||
a0d0e21e | 32 | #include "EXTERN.h" |
864dbfa3 | 33 | #define PERL_IN_PP_HOT_C |
a0d0e21e LW |
34 | #include "perl.h" |
35 | ||
36 | /* Hot code. */ | |
37 | ||
38 | PP(pp_const) | |
39 | { | |
39644a26 | 40 | dSP; |
1d7c1841 | 41 | XPUSHs(cSVOP_sv); |
a0d0e21e LW |
42 | RETURN; |
43 | } | |
44 | ||
45 | PP(pp_nextstate) | |
46 | { | |
533c011a | 47 | PL_curcop = (COP*)PL_op; |
a0d0e21e | 48 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 49 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e LW |
50 | FREETMPS; |
51 | return NORMAL; | |
52 | } | |
53 | ||
54 | PP(pp_gvsv) | |
55 | { | |
39644a26 | 56 | dSP; |
924508f0 | 57 | EXTEND(SP,1); |
533c011a | 58 | if (PL_op->op_private & OPpLVAL_INTRO) |
1d7c1841 | 59 | PUSHs(save_scalar(cGVOP_gv)); |
a0d0e21e | 60 | else |
1d7c1841 | 61 | PUSHs(GvSV(cGVOP_gv)); |
a0d0e21e LW |
62 | RETURN; |
63 | } | |
64 | ||
65 | PP(pp_null) | |
66 | { | |
67 | return NORMAL; | |
68 | } | |
69 | ||
7399586d HS |
70 | PP(pp_setstate) |
71 | { | |
72 | PL_curcop = (COP*)PL_op; | |
73 | return NORMAL; | |
74 | } | |
75 | ||
a0d0e21e LW |
76 | PP(pp_pushmark) |
77 | { | |
3280af22 | 78 | PUSHMARK(PL_stack_sp); |
a0d0e21e LW |
79 | return NORMAL; |
80 | } | |
81 | ||
82 | PP(pp_stringify) | |
83 | { | |
39644a26 | 84 | dSP; dTARGET; |
6050d10e | 85 | sv_copypv(TARG,TOPs); |
a0d0e21e LW |
86 | SETTARG; |
87 | RETURN; | |
88 | } | |
89 | ||
90 | PP(pp_gv) | |
91 | { | |
39644a26 | 92 | dSP; |
1d7c1841 | 93 | XPUSHs((SV*)cGVOP_gv); |
a0d0e21e LW |
94 | RETURN; |
95 | } | |
96 | ||
97 | PP(pp_and) | |
98 | { | |
39644a26 | 99 | dSP; |
a0d0e21e LW |
100 | if (!SvTRUE(TOPs)) |
101 | RETURN; | |
102 | else { | |
103 | --SP; | |
104 | RETURNOP(cLOGOP->op_other); | |
105 | } | |
106 | } | |
107 | ||
108 | PP(pp_sassign) | |
109 | { | |
39644a26 | 110 | dSP; dPOPTOPssrl; |
748a9306 | 111 | |
533c011a | 112 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
a0d0e21e LW |
113 | SV *temp; |
114 | temp = left; left = right; right = temp; | |
115 | } | |
3280af22 | 116 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e | 117 | TAINT_NOT; |
54310121 | 118 | SvSetMagicSV(right, left); |
a0d0e21e LW |
119 | SETs(right); |
120 | RETURN; | |
121 | } | |
122 | ||
123 | PP(pp_cond_expr) | |
124 | { | |
39644a26 | 125 | dSP; |
a0d0e21e | 126 | if (SvTRUEx(POPs)) |
1a67a97c | 127 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 128 | else |
1a67a97c | 129 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
130 | } |
131 | ||
132 | PP(pp_unstack) | |
133 | { | |
134 | I32 oldsave; | |
135 | TAINT_NOT; /* Each statement is presumed innocent */ | |
3280af22 | 136 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 137 | FREETMPS; |
3280af22 | 138 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
139 | LEAVE_SCOPE(oldsave); |
140 | return NORMAL; | |
141 | } | |
142 | ||
a0d0e21e LW |
143 | PP(pp_concat) |
144 | { | |
39644a26 | 145 | dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 LW |
146 | { |
147 | dPOPTOPssrl; | |
8d6d96c1 HS |
148 | bool lbyte; |
149 | STRLEN rlen; | |
a9c4fd4e AL |
150 | const char *rpv = SvPV(right, rlen); /* mg_get(right) happens here */ |
151 | const bool rbyte = !DO_UTF8(right); | |
152 | bool rcopied = FALSE; | |
8d6d96c1 HS |
153 | |
154 | if (TARG == right && right != left) { | |
155 | right = sv_2mortal(newSVpvn(rpv, rlen)); | |
1e54db1a | 156 | rpv = SvPV(right, rlen); /* no point setting UTF-8 here */ |
db79b45b | 157 | rcopied = TRUE; |
8d6d96c1 | 158 | } |
7889fe52 | 159 | |
8d6d96c1 | 160 | if (TARG != left) { |
a9c4fd4e AL |
161 | STRLEN llen; |
162 | const char* const lpv = SvPV(left, llen); /* mg_get(left) may happen here */ | |
90f5826e | 163 | lbyte = !DO_UTF8(left); |
8d6d96c1 HS |
164 | sv_setpvn(TARG, lpv, llen); |
165 | if (!lbyte) | |
166 | SvUTF8_on(TARG); | |
167 | else | |
168 | SvUTF8_off(TARG); | |
169 | } | |
170 | else { /* TARG == left */ | |
a9c4fd4e | 171 | STRLEN llen; |
8d6d96c1 HS |
172 | if (SvGMAGICAL(left)) |
173 | mg_get(left); /* or mg_get(left) may happen here */ | |
174 | if (!SvOK(TARG)) | |
c69006e4 | 175 | sv_setpvn(left, "", 0); |
a9c4fd4e | 176 | (void)SvPV_nomg(left, llen); /* Needed to set UTF8 flag */ |
90f5826e TS |
177 | lbyte = !DO_UTF8(left); |
178 | if (IN_BYTES) | |
179 | SvUTF8_off(TARG); | |
8d6d96c1 | 180 | } |
a12c0f56 | 181 | |
8d6d96c1 HS |
182 | if (lbyte != rbyte) { |
183 | if (lbyte) | |
184 | sv_utf8_upgrade_nomg(TARG); | |
185 | else { | |
db79b45b JH |
186 | if (!rcopied) |
187 | right = sv_2mortal(newSVpvn(rpv, rlen)); | |
8d6d96c1 HS |
188 | sv_utf8_upgrade_nomg(right); |
189 | rpv = SvPV(right, rlen); | |
69b47968 | 190 | } |
a0d0e21e | 191 | } |
8d6d96c1 | 192 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 193 | |
a0d0e21e LW |
194 | SETTARG; |
195 | RETURN; | |
748a9306 | 196 | } |
a0d0e21e LW |
197 | } |
198 | ||
199 | PP(pp_padsv) | |
200 | { | |
39644a26 | 201 | dSP; dTARGET; |
a0d0e21e | 202 | XPUSHs(TARG); |
533c011a NIS |
203 | if (PL_op->op_flags & OPf_MOD) { |
204 | if (PL_op->op_private & OPpLVAL_INTRO) | |
dd2155a4 | 205 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); |
a62b51b8 | 206 | if (PL_op->op_private & OPpDEREF) { |
8ec5e241 | 207 | PUTBACK; |
dd2155a4 | 208 | vivify_ref(PAD_SVl(PL_op->op_targ), PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
209 | SPAGAIN; |
210 | } | |
4633a7c4 | 211 | } |
a0d0e21e LW |
212 | RETURN; |
213 | } | |
214 | ||
215 | PP(pp_readline) | |
216 | { | |
f5284f61 | 217 | tryAMAGICunTARGET(iter, 0); |
3280af22 | 218 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 | 219 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f | 220 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 | 221 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 | 222 | else { |
f5284f61 IZ |
223 | dSP; |
224 | XPUSHs((SV*)PL_last_in_gv); | |
225 | PUTBACK; | |
cea2e8a9 | 226 | pp_rv2gv(); |
f5284f61 | 227 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 IZ |
228 | } |
229 | } | |
a0d0e21e LW |
230 | return do_readline(); |
231 | } | |
232 | ||
233 | PP(pp_eq) | |
234 | { | |
39644a26 | 235 | dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f | 236 | #ifndef NV_PRESERVES_UV |
0bdaccee | 237 | if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) { |
e61d22ef NC |
238 | SP--; |
239 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); | |
4c9fe80f AS |
240 | RETURN; |
241 | } | |
242 | #endif | |
28e5dec8 JH |
243 | #ifdef PERL_PRESERVE_IVUV |
244 | SvIV_please(TOPs); | |
245 | if (SvIOK(TOPs)) { | |
4c9fe80f AS |
246 | /* Unless the left argument is integer in range we are going |
247 | to have to use NV maths. Hence only attempt to coerce the | |
248 | right argument if we know the left is integer. */ | |
28e5dec8 JH |
249 | SvIV_please(TOPm1s); |
250 | if (SvIOK(TOPm1s)) { | |
251 | bool auvok = SvUOK(TOPm1s); | |
252 | bool buvok = SvUOK(TOPs); | |
a12c0f56 | 253 | |
1605159e NC |
254 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
255 | /* Casting IV to UV before comparison isn't going to matter | |
256 | on 2s complement. On 1s complement or sign&magnitude | |
257 | (if we have any of them) it could to make negative zero | |
258 | differ from normal zero. As I understand it. (Need to | |
259 | check - is negative zero implementation defined behaviour | |
260 | anyway?). NWC */ | |
261 | UV buv = SvUVX(POPs); | |
262 | UV auv = SvUVX(TOPs); | |
28e5dec8 | 263 | |
28e5dec8 JH |
264 | SETs(boolSV(auv == buv)); |
265 | RETURN; | |
266 | } | |
267 | { /* ## Mixed IV,UV ## */ | |
1605159e | 268 | SV *ivp, *uvp; |
28e5dec8 | 269 | IV iv; |
28e5dec8 | 270 | |
1605159e | 271 | /* == is commutative so doesn't matter which is left or right */ |
28e5dec8 | 272 | if (auvok) { |
1605159e NC |
273 | /* top of stack (b) is the iv */ |
274 | ivp = *SP; | |
275 | uvp = *--SP; | |
276 | } else { | |
277 | uvp = *SP; | |
278 | ivp = *--SP; | |
279 | } | |
280 | iv = SvIVX(ivp); | |
281 | if (iv < 0) { | |
282 | /* As uv is a UV, it's >0, so it cannot be == */ | |
283 | SETs(&PL_sv_no); | |
284 | RETURN; | |
285 | } | |
28e5dec8 | 286 | /* we know iv is >= 0 */ |
1605159e | 287 | SETs(boolSV((UV)iv == SvUVX(uvp))); |
28e5dec8 JH |
288 | RETURN; |
289 | } | |
290 | } | |
291 | } | |
292 | #endif | |
a0d0e21e LW |
293 | { |
294 | dPOPnv; | |
54310121 | 295 | SETs(boolSV(TOPn == value)); |
a0d0e21e LW |
296 | RETURN; |
297 | } | |
298 | } | |
299 | ||
300 | PP(pp_preinc) | |
301 | { | |
39644a26 | 302 | dSP; |
f39684df | 303 | if (SvTYPE(TOPs) >= SVt_PVGV && SvTYPE(TOPs) != SVt_PVLV) |
d470f89e | 304 | DIE(aTHX_ PL_no_modify); |
3510b4a1 NC |
305 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
306 | && SvIVX(TOPs) != IV_MAX) | |
55497cff | 307 | { |
45977657 | 308 | SvIV_set(TOPs, SvIVX(TOPs) + 1); |
55497cff | 309 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 310 | } |
28e5dec8 | 311 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 | 312 | sv_inc(TOPs); |
a0d0e21e LW |
313 | SvSETMAGIC(TOPs); |
314 | return NORMAL; | |
315 | } | |
316 | ||
317 | PP(pp_or) | |
318 | { | |
39644a26 | 319 | dSP; |
a0d0e21e LW |
320 | if (SvTRUE(TOPs)) |
321 | RETURN; | |
322 | else { | |
323 | --SP; | |
324 | RETURNOP(cLOGOP->op_other); | |
325 | } | |
326 | } | |
327 | ||
c963b151 BD |
328 | PP(pp_dor) |
329 | { | |
330 | /* Most of this is lifted straight from pp_defined */ | |
331 | dSP; | |
332 | register SV* sv; | |
333 | ||
334 | sv = TOPs; | |
335 | if (!sv || !SvANY(sv)) { | |
336 | --SP; | |
337 | RETURNOP(cLOGOP->op_other); | |
338 | } | |
339 | ||
340 | switch (SvTYPE(sv)) { | |
341 | case SVt_PVAV: | |
342 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
343 | RETURN; | |
344 | break; | |
345 | case SVt_PVHV: | |
346 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
347 | RETURN; | |
348 | break; | |
349 | case SVt_PVCV: | |
350 | if (CvROOT(sv) || CvXSUB(sv)) | |
351 | RETURN; | |
352 | break; | |
353 | default: | |
354 | if (SvGMAGICAL(sv)) | |
355 | mg_get(sv); | |
356 | if (SvOK(sv)) | |
357 | RETURN; | |
358 | } | |
359 | ||
360 | --SP; | |
361 | RETURNOP(cLOGOP->op_other); | |
362 | } | |
363 | ||
a0d0e21e LW |
364 | PP(pp_add) |
365 | { | |
39644a26 | 366 | dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 JH |
367 | useleft = USE_LEFT(TOPm1s); |
368 | #ifdef PERL_PRESERVE_IVUV | |
369 | /* We must see if we can perform the addition with integers if possible, | |
370 | as the integer code detects overflow while the NV code doesn't. | |
371 | If either argument hasn't had a numeric conversion yet attempt to get | |
372 | the IV. It's important to do this now, rather than just assuming that | |
373 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
374 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
375 | integer in case the second argument is IV=9223372036854775806 | |
376 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
377 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
378 | ||
379 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
380 | fp maths for integer values. |
381 | ||
a00b5bd3 | 382 | How to detect overflow? |
7dca457a NC |
383 | |
384 | C 99 section 6.2.6.1 says | |
385 | ||
386 | The range of nonnegative values of a signed integer type is a subrange | |
387 | of the corresponding unsigned integer type, and the representation of | |
388 | the same value in each type is the same. A computation involving | |
389 | unsigned operands can never overflow, because a result that cannot be | |
390 | represented by the resulting unsigned integer type is reduced modulo | |
391 | the number that is one greater than the largest value that can be | |
392 | represented by the resulting type. | |
393 | ||
394 | (the 9th paragraph) | |
395 | ||
396 | which I read as "unsigned ints wrap." | |
397 | ||
398 | signed integer overflow seems to be classed as "exception condition" | |
399 | ||
400 | If an exceptional condition occurs during the evaluation of an | |
401 | expression (that is, if the result is not mathematically defined or not | |
402 | in the range of representable values for its type), the behavior is | |
403 | undefined. | |
404 | ||
405 | (6.5, the 5th paragraph) | |
406 | ||
407 | I had assumed that on 2s complement machines signed arithmetic would | |
408 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
409 | everything perl builds on would be happy. After much wailing and | |
410 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
411 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
412 | unsigned code below is actually shorter than the old code. :-) | |
413 | */ | |
414 | ||
28e5dec8 JH |
415 | SvIV_please(TOPs); |
416 | if (SvIOK(TOPs)) { | |
417 | /* Unless the left argument is integer in range we are going to have to | |
418 | use NV maths. Hence only attempt to coerce the right argument if | |
419 | we know the left is integer. */ | |
9c5ffd7c JH |
420 | register UV auv = 0; |
421 | bool auvok = FALSE; | |
7dca457a NC |
422 | bool a_valid = 0; |
423 | ||
28e5dec8 | 424 | if (!useleft) { |
7dca457a NC |
425 | auv = 0; |
426 | a_valid = auvok = 1; | |
427 | /* left operand is undef, treat as zero. + 0 is identity, | |
428 | Could SETi or SETu right now, but space optimise by not adding | |
429 | lots of code to speed up what is probably a rarish case. */ | |
430 | } else { | |
431 | /* Left operand is defined, so is it IV? */ | |
432 | SvIV_please(TOPm1s); | |
433 | if (SvIOK(TOPm1s)) { | |
434 | if ((auvok = SvUOK(TOPm1s))) | |
435 | auv = SvUVX(TOPm1s); | |
436 | else { | |
437 | register IV aiv = SvIVX(TOPm1s); | |
438 | if (aiv >= 0) { | |
439 | auv = aiv; | |
440 | auvok = 1; /* Now acting as a sign flag. */ | |
441 | } else { /* 2s complement assumption for IV_MIN */ | |
442 | auv = (UV)-aiv; | |
443 | } | |
444 | } | |
445 | a_valid = 1; | |
28e5dec8 JH |
446 | } |
447 | } | |
7dca457a NC |
448 | if (a_valid) { |
449 | bool result_good = 0; | |
450 | UV result; | |
451 | register UV buv; | |
28e5dec8 | 452 | bool buvok = SvUOK(TOPs); |
a00b5bd3 | 453 | |
7dca457a NC |
454 | if (buvok) |
455 | buv = SvUVX(TOPs); | |
456 | else { | |
457 | register IV biv = SvIVX(TOPs); | |
458 | if (biv >= 0) { | |
459 | buv = biv; | |
460 | buvok = 1; | |
461 | } else | |
462 | buv = (UV)-biv; | |
463 | } | |
464 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 465 | else "IV" now, independent of how it came in. |
7dca457a NC |
466 | if a, b represents positive, A, B negative, a maps to -A etc |
467 | a + b => (a + b) | |
468 | A + b => -(a - b) | |
469 | a + B => (a - b) | |
470 | A + B => -(a + b) | |
471 | all UV maths. negate result if A negative. | |
472 | add if signs same, subtract if signs differ. */ | |
473 | ||
474 | if (auvok ^ buvok) { | |
475 | /* Signs differ. */ | |
476 | if (auv >= buv) { | |
477 | result = auv - buv; | |
478 | /* Must get smaller */ | |
479 | if (result <= auv) | |
480 | result_good = 1; | |
481 | } else { | |
482 | result = buv - auv; | |
483 | if (result <= buv) { | |
484 | /* result really should be -(auv-buv). as its negation | |
485 | of true value, need to swap our result flag */ | |
486 | auvok = !auvok; | |
487 | result_good = 1; | |
28e5dec8 JH |
488 | } |
489 | } | |
7dca457a NC |
490 | } else { |
491 | /* Signs same */ | |
492 | result = auv + buv; | |
493 | if (result >= auv) | |
494 | result_good = 1; | |
495 | } | |
496 | if (result_good) { | |
497 | SP--; | |
498 | if (auvok) | |
28e5dec8 | 499 | SETu( result ); |
7dca457a NC |
500 | else { |
501 | /* Negate result */ | |
502 | if (result <= (UV)IV_MIN) | |
503 | SETi( -(IV)result ); | |
504 | else { | |
505 | /* result valid, but out of range for IV. */ | |
506 | SETn( -(NV)result ); | |
28e5dec8 JH |
507 | } |
508 | } | |
7dca457a NC |
509 | RETURN; |
510 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
511 | } |
512 | } | |
513 | #endif | |
a0d0e21e | 514 | { |
28e5dec8 JH |
515 | dPOPnv; |
516 | if (!useleft) { | |
517 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
518 | SETn(value); | |
519 | RETURN; | |
520 | } | |
521 | SETn( value + TOPn ); | |
522 | RETURN; | |
a0d0e21e LW |
523 | } |
524 | } | |
525 | ||
526 | PP(pp_aelemfast) | |
527 | { | |
39644a26 | 528 | dSP; |
6a077020 DM |
529 | AV *av = PL_op->op_flags & OPf_SPECIAL ? |
530 | (AV*)PAD_SV(PL_op->op_targ) : GvAV(cGVOP_gv); | |
533c011a NIS |
531 | U32 lval = PL_op->op_flags & OPf_MOD; |
532 | SV** svp = av_fetch(av, PL_op->op_private, lval); | |
3280af22 | 533 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 534 | EXTEND(SP, 1); |
be6c24e0 GS |
535 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
536 | sv = sv_mortalcopy(sv); | |
537 | PUSHs(sv); | |
a0d0e21e LW |
538 | RETURN; |
539 | } | |
540 | ||
541 | PP(pp_join) | |
542 | { | |
39644a26 | 543 | dSP; dMARK; dTARGET; |
a0d0e21e LW |
544 | MARK++; |
545 | do_join(TARG, *MARK, MARK, SP); | |
546 | SP = MARK; | |
547 | SETs(TARG); | |
548 | RETURN; | |
549 | } | |
550 | ||
551 | PP(pp_pushre) | |
552 | { | |
39644a26 | 553 | dSP; |
44a8e56a | 554 | #ifdef DEBUGGING |
555 | /* | |
556 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
557 | * will be enough to hold an OP*. | |
558 | */ | |
559 | SV* sv = sv_newmortal(); | |
560 | sv_upgrade(sv, SVt_PVLV); | |
561 | LvTYPE(sv) = '/'; | |
533c011a | 562 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 563 | XPUSHs(sv); |
564 | #else | |
6b88bc9c | 565 | XPUSHs((SV*)PL_op); |
44a8e56a | 566 | #endif |
a0d0e21e LW |
567 | RETURN; |
568 | } | |
569 | ||
570 | /* Oversized hot code. */ | |
571 | ||
572 | PP(pp_print) | |
573 | { | |
27da23d5 | 574 | dVAR; dSP; dMARK; dORIGMARK; |
a0d0e21e LW |
575 | GV *gv; |
576 | IO *io; | |
760ac839 | 577 | register PerlIO *fp; |
236988e4 | 578 | MAGIC *mg; |
a0d0e21e | 579 | |
533c011a | 580 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
581 | gv = (GV*)*++MARK; |
582 | else | |
3280af22 | 583 | gv = PL_defoutgv; |
5b468f54 AMS |
584 | |
585 | if (gv && (io = GvIO(gv)) | |
586 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
587 | { | |
01bb7c6d | 588 | had_magic: |
68dc0745 | 589 | if (MARK == ORIGMARK) { |
1c846c1f | 590 | /* If using default handle then we need to make space to |
a60c0954 NIS |
591 | * pass object as 1st arg, so move other args up ... |
592 | */ | |
4352c267 | 593 | MEXTEND(SP, 1); |
68dc0745 | 594 | ++MARK; |
595 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
596 | ++SP; | |
597 | } | |
598 | PUSHMARK(MARK - 1); | |
5b468f54 | 599 | *MARK = SvTIED_obj((SV*)io, mg); |
68dc0745 | 600 | PUTBACK; |
236988e4 | 601 | ENTER; |
864dbfa3 | 602 | call_method("PRINT", G_SCALAR); |
236988e4 | 603 | LEAVE; |
604 | SPAGAIN; | |
68dc0745 | 605 | MARK = ORIGMARK + 1; |
606 | *MARK = *SP; | |
607 | SP = MARK; | |
236988e4 | 608 | RETURN; |
609 | } | |
a0d0e21e | 610 | if (!(io = GvIO(gv))) { |
5b468f54 AMS |
611 | if ((GvEGV(gv)) && (io = GvIO(GvEGV(gv))) |
612 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
01bb7c6d | 613 | goto had_magic; |
2dd78f96 JH |
614 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
615 | report_evil_fh(gv, io, PL_op->op_type); | |
93189314 | 616 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
617 | goto just_say_no; |
618 | } | |
619 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 620 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 NC |
621 | if (IoIFP(io)) |
622 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); | |
2dd78f96 | 623 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f | 624 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e | 625 | } |
93189314 | 626 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e LW |
627 | goto just_say_no; |
628 | } | |
629 | else { | |
630 | MARK++; | |
7889fe52 | 631 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e LW |
632 | while (MARK <= SP) { |
633 | if (!do_print(*MARK, fp)) | |
634 | break; | |
635 | MARK++; | |
636 | if (MARK <= SP) { | |
7889fe52 | 637 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e LW |
638 | MARK--; |
639 | break; | |
640 | } | |
641 | } | |
642 | } | |
643 | } | |
644 | else { | |
645 | while (MARK <= SP) { | |
646 | if (!do_print(*MARK, fp)) | |
647 | break; | |
648 | MARK++; | |
649 | } | |
650 | } | |
651 | if (MARK <= SP) | |
652 | goto just_say_no; | |
653 | else { | |
7889fe52 NIS |
654 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
655 | if (!do_print(PL_ors_sv, fp)) /* $\ */ | |
a0d0e21e LW |
656 | goto just_say_no; |
657 | ||
658 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 659 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
660 | goto just_say_no; |
661 | } | |
662 | } | |
663 | SP = ORIGMARK; | |
3280af22 | 664 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
665 | RETURN; |
666 | ||
667 | just_say_no: | |
668 | SP = ORIGMARK; | |
3280af22 | 669 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
670 | RETURN; |
671 | } | |
672 | ||
673 | PP(pp_rv2av) | |
674 | { | |
39644a26 | 675 | dSP; dTOPss; |
a0d0e21e LW |
676 | AV *av; |
677 | ||
678 | if (SvROK(sv)) { | |
679 | wasref: | |
f5284f61 IZ |
680 | tryAMAGICunDEREF(to_av); |
681 | ||
a0d0e21e LW |
682 | av = (AV*)SvRV(sv); |
683 | if (SvTYPE(av) != SVt_PVAV) | |
cea2e8a9 | 684 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a | 685 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 686 | SETs((SV*)av); |
a0d0e21e LW |
687 | RETURN; |
688 | } | |
78f9721b SM |
689 | else if (LVRET) { |
690 | if (GIMME == G_SCALAR) | |
691 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); | |
692 | SETs((SV*)av); | |
693 | RETURN; | |
694 | } | |
82d03984 RGS |
695 | else if (PL_op->op_flags & OPf_MOD |
696 | && PL_op->op_private & OPpLVAL_INTRO) | |
697 | Perl_croak(aTHX_ PL_no_localize_ref); | |
a0d0e21e LW |
698 | } |
699 | else { | |
700 | if (SvTYPE(sv) == SVt_PVAV) { | |
701 | av = (AV*)sv; | |
533c011a | 702 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 703 | SETs((SV*)av); |
a0d0e21e LW |
704 | RETURN; |
705 | } | |
78f9721b SM |
706 | else if (LVRET) { |
707 | if (GIMME == G_SCALAR) | |
708 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
709 | " scalar context"); | |
710 | SETs((SV*)av); | |
711 | RETURN; | |
712 | } | |
a0d0e21e LW |
713 | } |
714 | else { | |
67955e0c | 715 | GV *gv; |
1c846c1f | 716 | |
a0d0e21e LW |
717 | if (SvTYPE(sv) != SVt_PVGV) { |
718 | if (SvGMAGICAL(sv)) { | |
719 | mg_get(sv); | |
720 | if (SvROK(sv)) | |
721 | goto wasref; | |
722 | } | |
723 | if (!SvOK(sv)) { | |
533c011a NIS |
724 | if (PL_op->op_flags & OPf_REF || |
725 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 726 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 | 727 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 728 | report_uninit(sv); |
f5284f61 | 729 | if (GIMME == G_ARRAY) { |
c2444246 | 730 | (void)POPs; |
4633a7c4 | 731 | RETURN; |
f5284f61 IZ |
732 | } |
733 | RETSETUNDEF; | |
a0d0e21e | 734 | } |
35cd451c GS |
735 | if ((PL_op->op_flags & OPf_SPECIAL) && |
736 | !(PL_op->op_flags & OPf_MOD)) | |
737 | { | |
7a5fd60d | 738 | gv = (GV*)gv_fetchsv(sv, FALSE, SVt_PVAV); |
c9d5ac95 | 739 | if (!gv |
7a5fd60d NC |
740 | && (!is_gv_magical_sv(sv,0) |
741 | || !(gv = (GV*)gv_fetchsv(sv, TRUE, SVt_PVAV)))) | |
c9d5ac95 | 742 | { |
35cd451c | 743 | RETSETUNDEF; |
c9d5ac95 | 744 | } |
35cd451c GS |
745 | } |
746 | else { | |
747 | if (PL_op->op_private & HINT_STRICT_REFS) | |
7a5fd60d NC |
748 | DIE(aTHX_ PL_no_symref_sv, sv, "an ARRAY"); |
749 | gv = (GV*)gv_fetchsv(sv, TRUE, SVt_PVAV); | |
35cd451c GS |
750 | } |
751 | } | |
752 | else { | |
67955e0c | 753 | gv = (GV*)sv; |
a0d0e21e | 754 | } |
67955e0c | 755 | av = GvAVn(gv); |
533c011a | 756 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 757 | av = save_ary(gv); |
533c011a | 758 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 759 | SETs((SV*)av); |
a0d0e21e LW |
760 | RETURN; |
761 | } | |
78f9721b SM |
762 | else if (LVRET) { |
763 | if (GIMME == G_SCALAR) | |
764 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
765 | " scalar context"); | |
766 | SETs((SV*)av); | |
767 | RETURN; | |
768 | } | |
a0d0e21e LW |
769 | } |
770 | } | |
771 | ||
772 | if (GIMME == G_ARRAY) { | |
773 | I32 maxarg = AvFILL(av) + 1; | |
c2444246 | 774 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f | 775 | EXTEND(SP, maxarg); |
93965878 | 776 | if (SvRMAGICAL(av)) { |
1c846c1f | 777 | U32 i; |
eb160463 | 778 | for (i=0; i < (U32)maxarg; i++) { |
93965878 | 779 | SV **svp = av_fetch(av, i, FALSE); |
547d1dd8 HS |
780 | /* See note in pp_helem, and bug id #27839 */ |
781 | SP[i+1] = svp | |
782 | ? SvGMAGICAL(*svp) ? sv_mortalcopy(*svp) : *svp | |
783 | : &PL_sv_undef; | |
93965878 | 784 | } |
1c846c1f | 785 | } |
93965878 NIS |
786 | else { |
787 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
788 | } | |
a0d0e21e LW |
789 | SP += maxarg; |
790 | } | |
c754c3d7 | 791 | else if (GIMME_V == G_SCALAR) { |
a0d0e21e LW |
792 | dTARGET; |
793 | I32 maxarg = AvFILL(av) + 1; | |
f5284f61 | 794 | SETi(maxarg); |
a0d0e21e LW |
795 | } |
796 | RETURN; | |
797 | } | |
798 | ||
799 | PP(pp_rv2hv) | |
800 | { | |
39644a26 | 801 | dSP; dTOPss; |
a0d0e21e | 802 | HV *hv; |
be85d344 | 803 | I32 gimme = GIMME_V; |
a0d0e21e LW |
804 | |
805 | if (SvROK(sv)) { | |
806 | wasref: | |
f5284f61 IZ |
807 | tryAMAGICunDEREF(to_hv); |
808 | ||
a0d0e21e | 809 | hv = (HV*)SvRV(sv); |
6d822dc4 | 810 | if (SvTYPE(hv) != SVt_PVHV) |
cea2e8a9 | 811 | DIE(aTHX_ "Not a HASH reference"); |
533c011a | 812 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
813 | SETs((SV*)hv); |
814 | RETURN; | |
815 | } | |
78f9721b | 816 | else if (LVRET) { |
be85d344 | 817 | if (gimme != G_ARRAY) |
78f9721b SM |
818 | Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); |
819 | SETs((SV*)hv); | |
820 | RETURN; | |
821 | } | |
82d03984 RGS |
822 | else if (PL_op->op_flags & OPf_MOD |
823 | && PL_op->op_private & OPpLVAL_INTRO) | |
824 | Perl_croak(aTHX_ PL_no_localize_ref); | |
a0d0e21e LW |
825 | } |
826 | else { | |
6d822dc4 | 827 | if (SvTYPE(sv) == SVt_PVHV) { |
a0d0e21e | 828 | hv = (HV*)sv; |
533c011a | 829 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
830 | SETs((SV*)hv); |
831 | RETURN; | |
832 | } | |
78f9721b | 833 | else if (LVRET) { |
be85d344 | 834 | if (gimme != G_ARRAY) |
78f9721b SM |
835 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
836 | " scalar context"); | |
837 | SETs((SV*)hv); | |
838 | RETURN; | |
839 | } | |
a0d0e21e LW |
840 | } |
841 | else { | |
67955e0c | 842 | GV *gv; |
1c846c1f | 843 | |
a0d0e21e LW |
844 | if (SvTYPE(sv) != SVt_PVGV) { |
845 | if (SvGMAGICAL(sv)) { | |
846 | mg_get(sv); | |
847 | if (SvROK(sv)) | |
848 | goto wasref; | |
849 | } | |
850 | if (!SvOK(sv)) { | |
533c011a NIS |
851 | if (PL_op->op_flags & OPf_REF || |
852 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 853 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 | 854 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 855 | report_uninit(sv); |
be85d344 | 856 | if (gimme == G_ARRAY) { |
4633a7c4 LW |
857 | SP--; |
858 | RETURN; | |
859 | } | |
a0d0e21e LW |
860 | RETSETUNDEF; |
861 | } | |
35cd451c GS |
862 | if ((PL_op->op_flags & OPf_SPECIAL) && |
863 | !(PL_op->op_flags & OPf_MOD)) | |
864 | { | |
7a5fd60d | 865 | gv = (GV*)gv_fetchsv(sv, FALSE, SVt_PVHV); |
c9d5ac95 | 866 | if (!gv |
7a5fd60d NC |
867 | && (!is_gv_magical_sv(sv,0) |
868 | || !(gv = (GV*)gv_fetchsv(sv, TRUE, SVt_PVHV)))) | |
c9d5ac95 | 869 | { |
35cd451c | 870 | RETSETUNDEF; |
c9d5ac95 | 871 | } |
35cd451c GS |
872 | } |
873 | else { | |
874 | if (PL_op->op_private & HINT_STRICT_REFS) | |
7a5fd60d NC |
875 | DIE(aTHX_ PL_no_symref_sv, sv, "a HASH"); |
876 | gv = (GV*)gv_fetchsv(sv, TRUE, SVt_PVHV); | |
35cd451c GS |
877 | } |
878 | } | |
879 | else { | |
67955e0c | 880 | gv = (GV*)sv; |
a0d0e21e | 881 | } |
67955e0c | 882 | hv = GvHVn(gv); |
533c011a | 883 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 884 | hv = save_hash(gv); |
533c011a | 885 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
886 | SETs((SV*)hv); |
887 | RETURN; | |
888 | } | |
78f9721b | 889 | else if (LVRET) { |
be85d344 | 890 | if (gimme != G_ARRAY) |
78f9721b SM |
891 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
892 | " scalar context"); | |
893 | SETs((SV*)hv); | |
894 | RETURN; | |
895 | } | |
a0d0e21e LW |
896 | } |
897 | } | |
898 | ||
be85d344 | 899 | if (gimme == G_ARRAY) { /* array wanted */ |
3280af22 | 900 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 | 901 | return do_kv(); |
a0d0e21e | 902 | } |
be85d344 | 903 | else if (gimme == G_SCALAR) { |
a0d0e21e | 904 | dTARGET; |
243d6ab3 | 905 | TARG = Perl_hv_scalar(aTHX_ hv); |
a0d0e21e | 906 | SETTARG; |
a0d0e21e | 907 | } |
be85d344 | 908 | RETURN; |
a0d0e21e LW |
909 | } |
910 | ||
10c8fecd GS |
911 | STATIC void |
912 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
913 | { | |
914 | if (*relem) { | |
915 | SV *tmpstr; | |
6d822dc4 MS |
916 | HE *didstore; |
917 | ||
918 | if (ckWARN(WARN_MISC)) { | |
10c8fecd GS |
919 | if (relem == firstrelem && |
920 | SvROK(*relem) && | |
921 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
922 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
923 | { | |
9014280d | 924 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd GS |
925 | "Reference found where even-sized list expected"); |
926 | } | |
927 | else | |
9014280d | 928 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd GS |
929 | "Odd number of elements in hash assignment"); |
930 | } | |
6d822dc4 MS |
931 | |
932 | tmpstr = NEWSV(29,0); | |
933 | didstore = hv_store_ent(hash,*relem,tmpstr,0); | |
934 | if (SvMAGICAL(hash)) { | |
935 | if (SvSMAGICAL(tmpstr)) | |
936 | mg_set(tmpstr); | |
937 | if (!didstore) | |
938 | sv_2mortal(tmpstr); | |
939 | } | |
940 | TAINT_NOT; | |
10c8fecd GS |
941 | } |
942 | } | |
943 | ||
a0d0e21e LW |
944 | PP(pp_aassign) |
945 | { | |
27da23d5 | 946 | dVAR; dSP; |
3280af22 NIS |
947 | SV **lastlelem = PL_stack_sp; |
948 | SV **lastrelem = PL_stack_base + POPMARK; | |
949 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
950 | SV **firstlelem = lastrelem + 1; |
951 | ||
952 | register SV **relem; | |
953 | register SV **lelem; | |
954 | ||
955 | register SV *sv; | |
956 | register AV *ary; | |
957 | ||
54310121 | 958 | I32 gimme; |
a0d0e21e LW |
959 | HV *hash; |
960 | I32 i; | |
961 | int magic; | |
ca65944e | 962 | int duplicates = 0; |
5637b936 NC |
963 | SV **firsthashrelem = 0; /* "= 0" keeps gcc 2.95 quiet */ |
964 | ||
a0d0e21e | 965 | |
3280af22 | 966 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
ca65944e | 967 | gimme = GIMME_V; |
a0d0e21e LW |
968 | |
969 | /* If there's a common identifier on both sides we have to take | |
970 | * special care that assigning the identifier on the left doesn't | |
971 | * clobber a value on the right that's used later in the list. | |
972 | */ | |
10c8fecd | 973 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 | 974 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd GS |
975 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
976 | /*SUPPRESS 560*/ | |
155aba94 | 977 | if ((sv = *relem)) { |
a1f49e72 | 978 | TAINT_NOT; /* Each item is independent */ |
10c8fecd | 979 | *relem = sv_mortalcopy(sv); |
a1f49e72 | 980 | } |
10c8fecd | 981 | } |
a0d0e21e LW |
982 | } |
983 | ||
984 | relem = firstrelem; | |
985 | lelem = firstlelem; | |
986 | ary = Null(AV*); | |
987 | hash = Null(HV*); | |
10c8fecd | 988 | |
a0d0e21e | 989 | while (lelem <= lastlelem) { |
bbce6d69 | 990 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
991 | sv = *lelem++; |
992 | switch (SvTYPE(sv)) { | |
993 | case SVt_PVAV: | |
994 | ary = (AV*)sv; | |
748a9306 | 995 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e | 996 | av_clear(ary); |
7e42bd57 | 997 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
998 | i = 0; |
999 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1000 | SV **didstore; |
a0d0e21e | 1001 | assert(*relem); |
f2b990bf | 1002 | sv = newSVsv(*relem); |
a0d0e21e | 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 | ||
a0d0e21e | 1258 | play_it_again: |
cf93c79d IZ |
1259 | if (global && rx->startp[0] != -1) { |
1260 | t = s = rx->endp[0] + truebase; | |
d9f97599 | 1261 | if ((s + rx->minlen) > strend) |
a0d0e21e | 1262 | goto nope; |
f86702cc | 1263 | if (update_minmatch++) |
e60df1fa | 1264 | minmatch = had_zerolen; |
a0d0e21e | 1265 | } |
60aeb6fd NIS |
1266 | if (rx->reganch & RE_USE_INTUIT && |
1267 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { | |
ee0b7718 | 1268 | PL_bostr = truebase; |
f722798b IZ |
1269 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1270 | ||
1271 | if (!s) | |
1272 | goto nope; | |
1273 | if ( (rx->reganch & ROPT_CHECK_ALL) | |
14977893 | 1274 | && !PL_sawampersand |
f722798b IZ |
1275 | && ((rx->reganch & ROPT_NOSCAN) |
1276 | || !((rx->reganch & RE_INTUIT_TAIL) | |
05b4157f GS |
1277 | && (r_flags & REXEC_SCREAM))) |
1278 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
f722798b | 1279 | goto yup; |
a0d0e21e | 1280 | } |
cea2e8a9 | 1281 | if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 | 1282 | { |
3280af22 | 1283 | PL_curpm = pm; |
d65afb4b HS |
1284 | if (dynpm->op_pmflags & PMf_ONCE) |
1285 | dynpm->op_pmdynflags |= PMdf_USED; | |
a0d0e21e LW |
1286 | goto gotcha; |
1287 | } | |
1288 | else | |
1289 | goto ret_no; | |
1290 | /*NOTREACHED*/ | |
1291 | ||
1292 | gotcha: | |
72311751 GS |
1293 | if (rxtainted) |
1294 | RX_MATCH_TAINTED_on(rx); | |
1295 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1296 | if (gimme == G_ARRAY) { |
ffc61ed2 | 1297 | I32 nparens, i, len; |
a0d0e21e | 1298 | |
ffc61ed2 JH |
1299 | nparens = rx->nparens; |
1300 | if (global && !nparens) | |
a0d0e21e LW |
1301 | i = 1; |
1302 | else | |
1303 | i = 0; | |
c277df42 | 1304 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1305 | EXTEND(SP, nparens + i); |
1306 | EXTEND_MORTAL(nparens + i); | |
1307 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e LW |
1308 | PUSHs(sv_newmortal()); |
1309 | /*SUPPRESS 560*/ | |
cf93c79d IZ |
1310 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
1311 | len = rx->endp[i] - rx->startp[i]; | |
289555fe | 1312 | s = rx->startp[i] + truebase; |
290deeac A |
1313 | if (rx->endp[i] < 0 || rx->startp[i] < 0 || |
1314 | len < 0 || len > strend - s) | |
1315 | DIE(aTHX_ "panic: pp_match start/end pointers"); | |
a0d0e21e | 1316 | sv_setpvn(*SP, s, len); |
cce850e4 | 1317 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1318 | SvUTF8_on(*SP); |
a0d0e21e LW |
1319 | } |
1320 | } | |
1321 | if (global) { | |
d65afb4b | 1322 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
0af80b60 HS |
1323 | MAGIC* mg = 0; |
1324 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
1325 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1326 | if (!mg) { | |
1327 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); | |
1328 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1329 | } | |
1330 | if (rx->startp[0] != -1) { | |
1331 | mg->mg_len = rx->endp[0]; | |
1332 | if (rx->startp[0] == rx->endp[0]) | |
1333 | mg->mg_flags |= MGf_MINMATCH; | |
1334 | else | |
1335 | mg->mg_flags &= ~MGf_MINMATCH; | |
1336 | } | |
1337 | } | |
cf93c79d IZ |
1338 | had_zerolen = (rx->startp[0] != -1 |
1339 | && rx->startp[0] == rx->endp[0]); | |
c277df42 | 1340 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1341 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1342 | goto play_it_again; |
1343 | } | |
ffc61ed2 | 1344 | else if (!nparens) |
bde848c5 | 1345 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1346 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1347 | RETURN; |
1348 | } | |
1349 | else { | |
1350 | if (global) { | |
1351 | MAGIC* mg = 0; | |
1352 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
14befaf4 | 1353 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1354 | if (!mg) { |
14befaf4 DM |
1355 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1356 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
a0d0e21e | 1357 | } |
cf93c79d IZ |
1358 | if (rx->startp[0] != -1) { |
1359 | mg->mg_len = rx->endp[0]; | |
d9f97599 | 1360 | if (rx->startp[0] == rx->endp[0]) |
748a9306 LW |
1361 | mg->mg_flags |= MGf_MINMATCH; |
1362 | else | |
1363 | mg->mg_flags &= ~MGf_MINMATCH; | |
1364 | } | |
a0d0e21e | 1365 | } |
4633a7c4 | 1366 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1367 | RETPUSHYES; |
1368 | } | |
1369 | ||
f722798b | 1370 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1371 | if (rxtainted) |
1372 | RX_MATCH_TAINTED_on(rx); | |
1373 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1374 | PL_curpm = pm; |
d65afb4b HS |
1375 | if (dynpm->op_pmflags & PMf_ONCE) |
1376 | dynpm->op_pmdynflags |= PMdf_USED; | |
cf93c79d IZ |
1377 | if (RX_MATCH_COPIED(rx)) |
1378 | Safefree(rx->subbeg); | |
1379 | RX_MATCH_COPIED_off(rx); | |
1380 | rx->subbeg = Nullch; | |
a0d0e21e | 1381 | if (global) { |
d9f97599 | 1382 | rx->subbeg = truebase; |
cf93c79d | 1383 | rx->startp[0] = s - truebase; |
a30b2f1f | 1384 | if (RX_MATCH_UTF8(rx)) { |
60aeb6fd NIS |
1385 | char *t = (char*)utf8_hop((U8*)s, rx->minlen); |
1386 | rx->endp[0] = t - truebase; | |
1387 | } | |
1388 | else { | |
1389 | rx->endp[0] = s - truebase + rx->minlen; | |
1390 | } | |
cf93c79d | 1391 | rx->sublen = strend - truebase; |
a0d0e21e | 1392 | goto gotcha; |
1c846c1f | 1393 | } |
14977893 JH |
1394 | if (PL_sawampersand) { |
1395 | I32 off; | |
ed252734 NC |
1396 | #ifdef PERL_COPY_ON_WRITE |
1397 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
1398 | if (DEBUG_C_TEST) { | |
1399 | PerlIO_printf(Perl_debug_log, | |
1400 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", | |
1401 | (int) SvTYPE(TARG), truebase, t, | |
1402 | (int)(t-truebase)); | |
1403 | } | |
1404 | rx->saved_copy = sv_setsv_cow(rx->saved_copy, TARG); | |
1405 | rx->subbeg = SvPVX(rx->saved_copy) + (t - truebase); | |
1406 | assert (SvPOKp(rx->saved_copy)); | |
1407 | } else | |
1408 | #endif | |
1409 | { | |
14977893 | 1410 | |
ed252734 NC |
1411 | rx->subbeg = savepvn(t, strend - t); |
1412 | #ifdef PERL_COPY_ON_WRITE | |
1413 | rx->saved_copy = Nullsv; | |
1414 | #endif | |
1415 | } | |
14977893 JH |
1416 | rx->sublen = strend - t; |
1417 | RX_MATCH_COPIED_on(rx); | |
1418 | off = rx->startp[0] = s - t; | |
1419 | rx->endp[0] = off + rx->minlen; | |
1420 | } | |
1421 | else { /* startp/endp are used by @- @+. */ | |
1422 | rx->startp[0] = s - truebase; | |
1423 | rx->endp[0] = s - truebase + rx->minlen; | |
1424 | } | |
2d862feb | 1425 | rx->nparens = rx->lastparen = rx->lastcloseparen = 0; /* used by @-, @+, and $^N */ |
4633a7c4 | 1426 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1427 | RETPUSHYES; |
1428 | ||
1429 | nope: | |
a0d0e21e | 1430 | ret_no: |
d65afb4b | 1431 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e | 1432 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 | 1433 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1434 | if (mg) |
565764a8 | 1435 | mg->mg_len = -1; |
a0d0e21e LW |
1436 | } |
1437 | } | |
4633a7c4 | 1438 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1439 | if (gimme == G_ARRAY) |
1440 | RETURN; | |
1441 | RETPUSHNO; | |
1442 | } | |
1443 | ||
1444 | OP * | |
864dbfa3 | 1445 | Perl_do_readline(pTHX) |
a0d0e21e | 1446 | { |
27da23d5 | 1447 | dVAR; dSP; dTARGETSTACKED; |
a0d0e21e LW |
1448 | register SV *sv; |
1449 | STRLEN tmplen = 0; | |
1450 | STRLEN offset; | |
760ac839 | 1451 | PerlIO *fp; |
3280af22 | 1452 | register IO *io = GvIO(PL_last_in_gv); |
533c011a | 1453 | register I32 type = PL_op->op_type; |
54310121 | 1454 | I32 gimme = GIMME_V; |
e79b0511 | 1455 | MAGIC *mg; |
a0d0e21e | 1456 | |
5b468f54 | 1457 | if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { |
e79b0511 | 1458 | PUSHMARK(SP); |
5b468f54 | 1459 | XPUSHs(SvTIED_obj((SV*)io, mg)); |
e79b0511 | 1460 | PUTBACK; |
1461 | ENTER; | |
864dbfa3 | 1462 | call_method("READLINE", gimme); |
e79b0511 | 1463 | LEAVE; |
1464 | SPAGAIN; | |
0b7c7b4f HS |
1465 | if (gimme == G_SCALAR) { |
1466 | SV* result = POPs; | |
1467 | SvSetSV_nosteal(TARG, result); | |
1468 | PUSHTARG; | |
1469 | } | |
e79b0511 | 1470 | RETURN; |
1471 | } | |
a0d0e21e LW |
1472 | fp = Nullfp; |
1473 | if (io) { | |
1474 | fp = IoIFP(io); | |
1475 | if (!fp) { | |
1476 | if (IoFLAGS(io) & IOf_ARGV) { | |
1477 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1478 | IoLINES(io) = 0; |
3280af22 | 1479 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1480 | IoFLAGS(io) &= ~IOf_START; |
9d116dd7 | 1481 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 NIS |
1482 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1483 | SvSETMAGIC(GvSV(PL_last_in_gv)); | |
a2008d6d GS |
1484 | fp = IoIFP(io); |
1485 | goto have_fp; | |
a0d0e21e LW |
1486 | } |
1487 | } | |
3280af22 | 1488 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1489 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1490 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1491 | } |
1492 | } | |
0d44d22b NC |
1493 | else if (type == OP_GLOB) |
1494 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1495 | } |
1496 | else if (type == OP_GLOB) | |
1497 | SP--; | |
a00b5bd3 | 1498 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 | 1499 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 | 1500 | } |
a0d0e21e LW |
1501 | } |
1502 | if (!fp) { | |
790090df HS |
1503 | if (ckWARN2(WARN_GLOB, WARN_CLOSED) |
1504 | && (!io || !(IoFLAGS(io) & IOf_START))) { | |
3f4520fe | 1505 | if (type == OP_GLOB) |
9014280d | 1506 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a GS |
1507 | "glob failed (can't start child: %s)", |
1508 | Strerror(errno)); | |
69282e91 | 1509 | else |
bc37a18f | 1510 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe | 1511 | } |
54310121 | 1512 | if (gimme == G_SCALAR) { |
79628082 | 1513 | /* undef TARG, and push that undefined value */ |
ba92458f AE |
1514 | if (type != OP_RCATLINE) { |
1515 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1516 | SvOK_off(TARG); |
ba92458f | 1517 | } |
a0d0e21e LW |
1518 | PUSHTARG; |
1519 | } | |
1520 | RETURN; | |
1521 | } | |
a2008d6d | 1522 | have_fp: |
54310121 | 1523 | if (gimme == G_SCALAR) { |
a0d0e21e | 1524 | sv = TARG; |
9607fc9c | 1525 | if (SvROK(sv)) |
1526 | sv_unref(sv); | |
a0d0e21e LW |
1527 | (void)SvUPGRADE(sv, SVt_PV); |
1528 | tmplen = SvLEN(sv); /* remember if already alloced */ | |
bc44a8a2 | 1529 | if (!tmplen && !SvREADONLY(sv)) |
a0d0e21e | 1530 | Sv_Grow(sv, 80); /* try short-buffering it */ |
2b5e58c4 AMS |
1531 | offset = 0; |
1532 | if (type == OP_RCATLINE && SvOK(sv)) { | |
1533 | if (!SvPOK(sv)) { | |
1534 | STRLEN n_a; | |
1535 | (void)SvPV_force(sv, n_a); | |
1536 | } | |
a0d0e21e | 1537 | offset = SvCUR(sv); |
2b5e58c4 | 1538 | } |
a0d0e21e | 1539 | } |
54310121 | 1540 | else { |
1541 | sv = sv_2mortal(NEWSV(57, 80)); | |
1542 | offset = 0; | |
1543 | } | |
fbad3eb5 | 1544 | |
3887d568 AP |
1545 | /* This should not be marked tainted if the fp is marked clean */ |
1546 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1547 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1548 | TAINT; \ | |
1549 | SvTAINTED_on(sv); \ | |
1550 | } | |
1551 | ||
684bef36 | 1552 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1553 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1554 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1555 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1556 | |
a0d0e21e | 1557 | for (;;) { |
09e8efcc | 1558 | PUTBACK; |
fbad3eb5 | 1559 | if (!sv_gets(sv, fp, offset) |
2d726892 TF |
1560 | && (type == OP_GLOB |
1561 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
1562 | || PerlIO_error(fp))) | |
fbad3eb5 | 1563 | { |
760ac839 | 1564 | PerlIO_clearerr(fp); |
a0d0e21e | 1565 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1566 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1567 | if (fp) |
1568 | continue; | |
3280af22 | 1569 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1570 | } |
1571 | else if (type == OP_GLOB) { | |
e476b1b5 | 1572 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
9014280d | 1573 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
4eb79ab5 | 1574 | "glob failed (child exited with status %d%s)", |
894356b3 | 1575 | (int)(STATUS_CURRENT >> 8), |
cf494569 | 1576 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 | 1577 | } |
a0d0e21e | 1578 | } |
54310121 | 1579 | if (gimme == G_SCALAR) { |
ba92458f AE |
1580 | if (type != OP_RCATLINE) { |
1581 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1582 | SvOK_off(TARG); |
ba92458f | 1583 | } |
09e8efcc | 1584 | SPAGAIN; |
a0d0e21e LW |
1585 | PUSHTARG; |
1586 | } | |
3887d568 | 1587 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1588 | RETURN; |
1589 | } | |
3887d568 | 1590 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1591 | IoLINES(io)++; |
b9fee9ba | 1592 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1593 | SvSETMAGIC(sv); |
09e8efcc | 1594 | SPAGAIN; |
a0d0e21e | 1595 | XPUSHs(sv); |
a0d0e21e LW |
1596 | if (type == OP_GLOB) { |
1597 | char *tmps; | |
1598 | ||
3280af22 | 1599 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd | 1600 | tmps = SvEND(sv) - 1; |
3280af22 | 1601 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd | 1602 | *tmps = '\0'; |
b162af07 | 1603 | SvCUR_set(sv, SvCUR(sv) - 1); |
c07a80fd | 1604 | } |
1605 | } | |
a0d0e21e LW |
1606 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1607 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && | |
1608 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) | |
1609 | break; | |
43384a1a | 1610 | if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1611 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1612 | continue; | |
1613 | } | |
2d79bf7f | 1614 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
7fc63493 AL |
1615 | const U8 *s = (U8*)SvPVX(sv) + offset; |
1616 | const STRLEN len = SvCUR(sv) - offset; | |
1617 | const U8 *f; | |
2d79bf7f JH |
1618 | |
1619 | if (ckWARN(WARN_UTF8) && | |
1620 | !Perl_is_utf8_string_loc(aTHX_ s, len, &f)) | |
1621 | /* Emulate :encoding(utf8) warning in the same case. */ | |
1622 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
1623 | "utf8 \"\\x%02X\" does not map to Unicode", | |
1624 | f < (U8*)SvEND(sv) ? *f : 0); | |
a0d0e21e | 1625 | } |
54310121 | 1626 | if (gimme == G_ARRAY) { |
a0d0e21e | 1627 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1da4ca5f | 1628 | SvPV_shrink_to_cur(sv); |
a0d0e21e LW |
1629 | } |
1630 | sv = sv_2mortal(NEWSV(58, 80)); | |
1631 | continue; | |
1632 | } | |
54310121 | 1633 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e | 1634 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
d5b5861b NC |
1635 | const STRLEN new_len |
1636 | = SvCUR(sv) < 60 ? 80 : SvCUR(sv)+40; /* allow some slop */ | |
1da4ca5f | 1637 | SvPV_renew(sv, new_len); |
a0d0e21e LW |
1638 | } |
1639 | RETURN; | |
1640 | } | |
1641 | } | |
1642 | ||
1643 | PP(pp_enter) | |
1644 | { | |
27da23d5 | 1645 | dVAR; dSP; |
c09156bb | 1646 | register PERL_CONTEXT *cx; |
533c011a | 1647 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e | 1648 | |
54310121 | 1649 | if (gimme == -1) { |
1650 | if (cxstack_ix >= 0) | |
1651 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1652 | else | |
1653 | gimme = G_SCALAR; | |
1654 | } | |
a0d0e21e LW |
1655 | |
1656 | ENTER; | |
1657 | ||
1658 | SAVETMPS; | |
924508f0 | 1659 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
1660 | |
1661 | RETURN; | |
1662 | } | |
1663 | ||
1664 | PP(pp_helem) | |
1665 | { | |
39644a26 | 1666 | dSP; |
760ac839 | 1667 | HE* he; |
ae77835f | 1668 | SV **svp; |
a0d0e21e | 1669 | SV *keysv = POPs; |
a0d0e21e | 1670 | HV *hv = (HV*)POPs; |
78f9721b | 1671 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a | 1672 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
be6c24e0 | 1673 | SV *sv; |
765f542d NC |
1674 | #ifdef PERL_COPY_ON_WRITE |
1675 | U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvUVX(keysv) : 0; | |
1676 | #else | |
1c846c1f | 1677 | U32 hash = (SvFAKE(keysv) && SvREADONLY(keysv)) ? SvUVX(keysv) : 0; |
765f542d | 1678 | #endif |
9c5ffd7c | 1679 | I32 preeminent = 0; |
a0d0e21e | 1680 | |
ae77835f | 1681 | if (SvTYPE(hv) == SVt_PVHV) { |
8d1f198f DM |
1682 | if (PL_op->op_private & OPpLVAL_INTRO) { |
1683 | MAGIC *mg; | |
1684 | HV *stash; | |
1685 | /* does the element we're localizing already exist? */ | |
c39e6ab0 | 1686 | preeminent = |
8d1f198f DM |
1687 | /* can we determine whether it exists? */ |
1688 | ( !SvRMAGICAL(hv) | |
1689 | || mg_find((SV*)hv, PERL_MAGIC_env) | |
1690 | || ( (mg = mg_find((SV*)hv, PERL_MAGIC_tied)) | |
1691 | /* Try to preserve the existenceness of a tied hash | |
1692 | * element by using EXISTS and DELETE if possible. | |
1693 | * Fallback to FETCH and STORE otherwise */ | |
1694 | && (stash = SvSTASH(SvRV(SvTIED_obj((SV*)hv, mg)))) | |
1695 | && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) | |
1696 | && gv_fetchmethod_autoload(stash, "DELETE", TRUE) | |
1697 | ) | |
1698 | ) ? hv_exists_ent(hv, keysv, 0) : 1; | |
c39e6ab0 | 1699 | |
8d1f198f | 1700 | } |
1c846c1f | 1701 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
97fcbf96 | 1702 | svp = he ? &HeVAL(he) : 0; |
ae77835f | 1703 | } |
c750a3ec | 1704 | else { |
a0d0e21e | 1705 | RETPUSHUNDEF; |
c750a3ec | 1706 | } |
a0d0e21e | 1707 | if (lval) { |
3280af22 | 1708 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 1709 | SV* lv; |
1710 | SV* key2; | |
2d8e6c8d | 1711 | if (!defer) { |
ce5030a2 | 1712 | DIE(aTHX_ PL_no_helem_sv, keysv); |
2d8e6c8d | 1713 | } |
68dc0745 | 1714 | lv = sv_newmortal(); |
1715 | sv_upgrade(lv, SVt_PVLV); | |
1716 | LvTYPE(lv) = 'y'; | |
14befaf4 | 1717 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 | 1718 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
1719 | LvTARG(lv) = SvREFCNT_inc(hv); | |
1720 | LvTARGLEN(lv) = 1; | |
1721 | PUSHs(lv); | |
1722 | RETURN; | |
1723 | } | |
533c011a | 1724 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f | 1725 | if (HvNAME(hv) && isGV(*svp)) |
533c011a | 1726 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc SC |
1727 | else { |
1728 | if (!preeminent) { | |
1729 | STRLEN keylen; | |
1730 | char *key = SvPV(keysv, keylen); | |
57813020 | 1731 | SAVEDELETE(hv, savepvn(key,keylen), keylen); |
bfc4de9f | 1732 | } else |
1f5346dc SC |
1733 | save_helem(hv, keysv, svp); |
1734 | } | |
5f05dabc | 1735 | } |
533c011a NIS |
1736 | else if (PL_op->op_private & OPpDEREF) |
1737 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 1738 | } |
3280af22 | 1739 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
1740 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1741 | * Pushing the magical RHS on to the stack is useless, since | |
1742 | * that magic is soon destined to be misled by the local(), | |
1743 | * and thus the later pp_sassign() will fail to mg_get() the | |
1744 | * old value. This should also cure problems with delayed | |
1745 | * mg_get()s. GSAR 98-07-03 */ | |
1746 | if (!lval && SvGMAGICAL(sv)) | |
1747 | sv = sv_mortalcopy(sv); | |
1748 | PUSHs(sv); | |
a0d0e21e LW |
1749 | RETURN; |
1750 | } | |
1751 | ||
1752 | PP(pp_leave) | |
1753 | { | |
27da23d5 | 1754 | dVAR; dSP; |
c09156bb | 1755 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
1756 | register SV **mark; |
1757 | SV **newsp; | |
1758 | PMOP *newpm; | |
1759 | I32 gimme; | |
1760 | ||
533c011a | 1761 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1762 | cx = &cxstack[cxstack_ix]; |
3280af22 | 1763 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e LW |
1764 | } |
1765 | ||
1766 | POPBLOCK(cx,newpm); | |
1767 | ||
533c011a | 1768 | gimme = OP_GIMME(PL_op, -1); |
54310121 | 1769 | if (gimme == -1) { |
1770 | if (cxstack_ix >= 0) | |
1771 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1772 | else | |
1773 | gimme = G_SCALAR; | |
1774 | } | |
a0d0e21e | 1775 | |
a1f49e72 | 1776 | TAINT_NOT; |
54310121 | 1777 | if (gimme == G_VOID) |
1778 | SP = newsp; | |
1779 | else if (gimme == G_SCALAR) { | |
1780 | MARK = newsp + 1; | |
09256e2f | 1781 | if (MARK <= SP) { |
54310121 | 1782 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1783 | *MARK = TOPs; | |
1784 | else | |
1785 | *MARK = sv_mortalcopy(TOPs); | |
09256e2f | 1786 | } else { |
54310121 | 1787 | MEXTEND(mark,0); |
3280af22 | 1788 | *MARK = &PL_sv_undef; |
a0d0e21e | 1789 | } |
54310121 | 1790 | SP = MARK; |
a0d0e21e | 1791 | } |
54310121 | 1792 | else if (gimme == G_ARRAY) { |
a1f49e72 CS |
1793 | /* in case LEAVE wipes old return values */ |
1794 | for (mark = newsp + 1; mark <= SP; mark++) { | |
1795 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
a0d0e21e | 1796 | *mark = sv_mortalcopy(*mark); |
a1f49e72 CS |
1797 | TAINT_NOT; /* Each item is independent */ |
1798 | } | |
1799 | } | |
a0d0e21e | 1800 | } |
3280af22 | 1801 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e LW |
1802 | |
1803 | LEAVE; | |
1804 | ||
1805 | RETURN; | |
1806 | } | |
1807 | ||
1808 | PP(pp_iter) | |
1809 | { | |
39644a26 | 1810 | dSP; |
c09156bb | 1811 | register PERL_CONTEXT *cx; |
dc09a129 | 1812 | SV *sv, *oldsv; |
4633a7c4 | 1813 | AV* av; |
1d7c1841 | 1814 | SV **itersvp; |
a0d0e21e | 1815 | |
924508f0 | 1816 | EXTEND(SP, 1); |
a0d0e21e | 1817 | cx = &cxstack[cxstack_ix]; |
6b35e009 | 1818 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 | 1819 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1820 | |
1d7c1841 | 1821 | itersvp = CxITERVAR(cx); |
4633a7c4 | 1822 | av = cx->blk_loop.iterary; |
89ea2908 GA |
1823 | if (SvTYPE(av) != SVt_PVAV) { |
1824 | /* iterate ($min .. $max) */ | |
1825 | if (cx->blk_loop.iterlval) { | |
1826 | /* string increment */ | |
1827 | register SV* cur = cx->blk_loop.iterlval; | |
4fe3f0fa | 1828 | STRLEN maxlen = 0; |
e1ec3a88 | 1829 | const char *max = SvOK((SV*)av) ? SvPV((SV*)av, maxlen) : ""; |
89ea2908 | 1830 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
1d7c1841 | 1831 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1832 | /* safe to reuse old SV */ |
1d7c1841 | 1833 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1834 | } |
1c846c1f | 1835 | else |
eaa5c2d6 GA |
1836 | { |
1837 | /* we need a fresh SV every time so that loop body sees a | |
1838 | * completely new SV for closures/references to work as | |
1839 | * they used to */ | |
dc09a129 | 1840 | oldsv = *itersvp; |
1d7c1841 | 1841 | *itersvp = newSVsv(cur); |
dc09a129 | 1842 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1843 | } |
89ea2908 GA |
1844 | if (strEQ(SvPVX(cur), max)) |
1845 | sv_setiv(cur, 0); /* terminate next time */ | |
1846 | else | |
1847 | sv_inc(cur); | |
1848 | RETPUSHYES; | |
1849 | } | |
1850 | RETPUSHNO; | |
1851 | } | |
1852 | /* integer increment */ | |
1853 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) | |
1854 | RETPUSHNO; | |
7f61b687 | 1855 | |
3db8f154 | 1856 | /* don't risk potential race */ |
1d7c1841 | 1857 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1858 | /* safe to reuse old SV */ |
1d7c1841 | 1859 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 | 1860 | } |
1c846c1f | 1861 | else |
eaa5c2d6 GA |
1862 | { |
1863 | /* we need a fresh SV every time so that loop body sees a | |
1864 | * completely new SV for closures/references to work as they | |
1865 | * used to */ | |
dc09a129 | 1866 | oldsv = *itersvp; |
1d7c1841 | 1867 | *itersvp = newSViv(cx->blk_loop.iterix++); |
dc09a129 | 1868 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1869 | } |
89ea2908 GA |
1870 | RETPUSHYES; |
1871 | } | |
1872 | ||
1873 | /* iterate array */ | |
ef3e5ea9 NC |
1874 | if (PL_op->op_private & OPpITER_REVERSED) { |
1875 | /* In reverse, use itermax as the min :-) */ | |
c491ecac | 1876 | if (cx->blk_loop.iterix <= cx->blk_loop.itermax) |
ef3e5ea9 | 1877 | RETPUSHNO; |
a0d0e21e | 1878 | |
ef3e5ea9 NC |
1879 | if (SvMAGICAL(av) || AvREIFY(av)) { |
1880 | SV **svp = av_fetch(av, cx->blk_loop.iterix--, FALSE); | |
1881 | if (svp) | |
1882 | sv = *svp; | |
1883 | else | |
1884 | sv = Nullsv; | |
1885 | } | |
1886 | else { | |
1887 | sv = AvARRAY(av)[cx->blk_loop.iterix--]; | |
1888 | } | |
d42935ef JH |
1889 | } |
1890 | else { | |
ef3e5ea9 NC |
1891 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : |
1892 | AvFILL(av))) | |
1893 | RETPUSHNO; | |
1894 | ||
1895 | if (SvMAGICAL(av) || AvREIFY(av)) { | |
1896 | SV **svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE); | |
1897 | if (svp) | |
1898 | sv = *svp; | |
1899 | else | |
1900 | sv = Nullsv; | |
1901 | } | |
1902 | else { | |
1903 | sv = AvARRAY(av)[++cx->blk_loop.iterix]; | |
1904 | } | |
d42935ef | 1905 | } |
ef3e5ea9 | 1906 | |
cccede53 DM |
1907 | if (sv && SvREFCNT(sv) == 0) { |
1908 | *itersvp = Nullsv; | |
b6c83531 | 1909 | Perl_croak(aTHX_ "Use of freed value in iteration"); |
cccede53 DM |
1910 | } |
1911 | ||
d42935ef | 1912 | if (sv) |
a0d0e21e | 1913 | SvTEMP_off(sv); |
a0d0e21e | 1914 | else |
3280af22 | 1915 | sv = &PL_sv_undef; |
8b530633 | 1916 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc | 1917 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc | 1918 | if (lv && SvREFCNT(lv) > 1) { |
1919 | SvREFCNT_dec(lv); | |
1920 | lv = Nullsv; | |
1921 | } | |
5f05dabc | 1922 | if (lv) |
1923 | SvREFCNT_dec(LvTARG(lv)); | |
1924 | else { | |
68dc0745 | 1925 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc | 1926 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc | 1927 | LvTYPE(lv) = 'y'; |
14befaf4 | 1928 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
5f05dabc | 1929 | } |
1930 | LvTARG(lv) = SvREFCNT_inc(av); | |
1931 | LvTARGOFF(lv) = cx->blk_loop.iterix; | |
42718184 | 1932 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc | 1933 | sv = (SV*)lv; |
1934 | } | |
a0d0e21e | 1935 | |
dc09a129 | 1936 | oldsv = *itersvp; |
1d7c1841 | 1937 | *itersvp = SvREFCNT_inc(sv); |
dc09a129 DM |
1938 | SvREFCNT_dec(oldsv); |
1939 | ||
a0d0e21e LW |
1940 | RETPUSHYES; |
1941 | } | |
1942 | ||
1943 | PP(pp_subst) | |
1944 | { | |
39644a26 | 1945 | dSP; dTARG; |
a0d0e21e LW |
1946 | register PMOP *pm = cPMOP; |
1947 | PMOP *rpm = pm; | |
1948 | register SV *dstr; | |
1949 | register char *s; | |
1950 | char *strend; | |
1951 | register char *m; | |
1952 | char *c; | |
1953 | register char *d; | |
1954 | STRLEN clen; | |
1955 | I32 iters = 0; | |
1956 | I32 maxiters; | |
1957 | register I32 i; | |
1958 | bool once; | |
71be2cbc | 1959 | bool rxtainted; |
a0d0e21e | 1960 | char *orig; |
22e551b9 | 1961 | I32 r_flags; |
aaa362c4 | 1962 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
1963 | STRLEN len; |
1964 | int force_on_match = 0; | |
3280af22 | 1965 | I32 oldsave = PL_savestack_ix; |
792b2c16 | 1966 | STRLEN slen; |
f272994b | 1967 | bool doutf8 = FALSE; |
ed252734 NC |
1968 | #ifdef PERL_COPY_ON_WRITE |
1969 | bool is_cow; | |
1970 | #endif | |
db79b45b | 1971 | SV *nsv = Nullsv; |
a0d0e21e | 1972 | |
5cd24f17 | 1973 | /* known replacement string? */ |
1974 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; | |
533c011a | 1975 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1976 | TARG = POPs; |
59f00321 RGS |
1977 | else if (PL_op->op_private & OPpTARGET_MY) |
1978 | GETTARGET; | |
a0d0e21e | 1979 | else { |
54b9620d | 1980 | TARG = DEFSV; |
a0d0e21e | 1981 | EXTEND(SP,1); |
1c846c1f | 1982 | } |
d9f424b2 | 1983 | |
ed252734 NC |
1984 | #ifdef PERL_COPY_ON_WRITE |
1985 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, | |
1986 | because they make integers such as 256 "false". */ | |
1987 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
1988 | #else | |
765f542d NC |
1989 | if (SvIsCOW(TARG)) |
1990 | sv_force_normal_flags(TARG,0); | |
ed252734 NC |
1991 | #endif |
1992 | if ( | |
1993 | #ifdef PERL_COPY_ON_WRITE | |
1994 | !is_cow && | |
1995 | #endif | |
1996 | (SvREADONLY(TARG) | |
4ce457a6 TP |
1997 | || ( (SvTYPE(TARG) == SVt_PVGV || SvTYPE(TARG) > SVt_PVLV) |
1998 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) | |
d470f89e | 1999 | DIE(aTHX_ PL_no_modify); |
8ec5e241 NIS |
2000 | PUTBACK; |
2001 | ||
a0d0e21e | 2002 | s = SvPV(TARG, len); |
68dc0745 | 2003 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 2004 | force_on_match = 1; |
b3eb6a9b | 2005 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 NIS |
2006 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
2007 | if (PL_tainted) | |
b3eb6a9b | 2008 | rxtainted |= 2; |
9212bbba | 2009 | TAINT_NOT; |
a12c0f56 | 2010 | |
a30b2f1f | 2011 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 2012 | |
a0d0e21e LW |
2013 | force_it: |
2014 | if (!pm || !s) | |
2269b42e | 2015 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
2016 | |
2017 | strend = s + len; | |
a30b2f1f | 2018 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
2019 | maxiters = 2 * slen + 10; /* We can match twice at each |
2020 | position, once with zero-length, | |
2021 | second time with non-zero. */ | |
a0d0e21e | 2022 | |
3280af22 NIS |
2023 | if (!rx->prelen && PL_curpm) { |
2024 | pm = PL_curpm; | |
aaa362c4 | 2025 | rx = PM_GETRE(pm); |
a0d0e21e | 2026 | } |
22e551b9 | 2027 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
ed252734 | 2028 | ? REXEC_COPY_STR : 0; |
f722798b | 2029 | if (SvSCREAM(TARG)) |
22e551b9 | 2030 | r_flags |= REXEC_SCREAM; |
7fba1cd6 | 2031 | |
a0d0e21e | 2032 | orig = m = s; |
f722798b | 2033 | if (rx->reganch & RE_USE_INTUIT) { |
ee0b7718 | 2034 | PL_bostr = orig; |
f722798b IZ |
2035 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
2036 | ||
2037 | if (!s) | |
2038 | goto nope; | |
2039 | /* How to do it in subst? */ | |
2040 | /* if ( (rx->reganch & ROPT_CHECK_ALL) | |
1c846c1f | 2041 | && !PL_sawampersand |
f722798b IZ |
2042 | && ((rx->reganch & ROPT_NOSCAN) |
2043 | || !((rx->reganch & RE_INTUIT_TAIL) | |
2044 | && (r_flags & REXEC_SCREAM)))) | |
2045 | goto yup; | |
2046 | */ | |
a0d0e21e | 2047 | } |
71be2cbc | 2048 | |
2049 | /* only replace once? */ | |
a0d0e21e | 2050 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc | 2051 | |
2052 | /* known replacement string? */ | |
f272994b | 2053 | if (dstr) { |
8514a05a JH |
2054 | /* replacement needing upgrading? */ |
2055 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 2056 | nsv = sv_newmortal(); |
4a176938 | 2057 | SvSetSV(nsv, dstr); |
8514a05a JH |
2058 | if (PL_encoding) |
2059 | sv_recode_to_utf8(nsv, PL_encoding); | |
2060 | else | |
2061 | sv_utf8_upgrade(nsv); | |
2062 | c = SvPV(nsv, clen); | |
4a176938 JH |
2063 | doutf8 = TRUE; |
2064 | } | |
2065 | else { | |
2066 | c = SvPV(dstr, clen); | |
2067 | doutf8 = DO_UTF8(dstr); | |
8514a05a | 2068 | } |
f272994b A |
2069 | } |
2070 | else { | |
2071 | c = Nullch; | |
2072 | doutf8 = FALSE; | |
2073 | } | |
2074 | ||
71be2cbc | 2075 | /* can do inplace substitution? */ |
ed252734 NC |
2076 | if (c |
2077 | #ifdef PERL_COPY_ON_WRITE | |
2078 | && !is_cow | |
2079 | #endif | |
2080 | && (I32)clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) | |
db79b45b JH |
2081 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN) |
2082 | && (!doutf8 || SvUTF8(TARG))) { | |
f722798b IZ |
2083 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2084 | r_flags | REXEC_CHECKED)) | |
2085 | { | |
8ec5e241 | 2086 | SPAGAIN; |
3280af22 | 2087 | PUSHs(&PL_sv_no); |
71be2cbc | 2088 | LEAVE_SCOPE(oldsave); |
2089 | RETURN; | |
2090 | } | |
ed252734 NC |
2091 | #ifdef PERL_COPY_ON_WRITE |
2092 | if (SvIsCOW(TARG)) { | |
2093 | assert (!force_on_match); | |
2094 | goto have_a_cow; | |
2095 | } | |
2096 | #endif | |
71be2cbc | 2097 | if (force_on_match) { |
2098 | force_on_match = 0; | |
2099 | s = SvPV_force(TARG, len); | |
2100 | goto force_it; | |
2101 | } | |
71be2cbc | 2102 | d = s; |
3280af22 | 2103 | PL_curpm = pm; |
71be2cbc | 2104 | SvSCREAM_off(TARG); /* disable possible screamer */ |
2105 | if (once) { | |
48c036b1 | 2106 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d IZ |
2107 | m = orig + rx->startp[0]; |
2108 | d = orig + rx->endp[0]; | |
71be2cbc | 2109 | s = orig; |
2110 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2111 | if (clen) { | |
2112 | Copy(c, m, clen, char); | |
2113 | m += clen; | |
a0d0e21e | 2114 | } |
71be2cbc | 2115 | i = strend - d; |
2116 | if (i > 0) { | |
2117 | Move(d, m, i, char); | |
2118 | m += i; | |
a0d0e21e | 2119 | } |
71be2cbc | 2120 | *m = '\0'; |
2121 | SvCUR_set(TARG, m - s); | |
2122 | } | |
2123 | /*SUPPRESS 560*/ | |
155aba94 | 2124 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc | 2125 | d -= clen; |
2126 | m = d; | |
2127 | sv_chop(TARG, d-i); | |
2128 | s += i; | |
2129 | while (i--) | |
2130 | *--d = *--s; | |
2131 | if (clen) | |
2132 | Copy(c, m, clen, char); | |
2133 | } | |
2134 | else if (clen) { | |
2135 | d -= clen; | |
2136 | sv_chop(TARG, d); | |
2137 | Copy(c, d, clen, char); | |
2138 | } | |
2139 | else { | |
2140 | sv_chop(TARG, d); | |
2141 | } | |
48c036b1 | 2142 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2143 | SPAGAIN; |
3280af22 | 2144 | PUSHs(&PL_sv_yes); |
71be2cbc | 2145 | } |
2146 | else { | |
71be2cbc | 2147 | do { |
2148 | if (iters++ > maxiters) | |
cea2e8a9 | 2149 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2150 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2151 | m = rx->startp[0] + orig; |
71be2cbc | 2152 | /*SUPPRESS 560*/ |
155aba94 | 2153 | if ((i = m - s)) { |
71be2cbc | 2154 | if (s != d) |
2155 | Move(s, d, i, char); | |
2156 | d += i; | |
a0d0e21e | 2157 | } |
71be2cbc | 2158 | if (clen) { |
2159 | Copy(c, d, clen, char); | |
2160 | d += clen; | |
2161 | } | |
cf93c79d | 2162 | s = rx->endp[0] + orig; |
cea2e8a9 | 2163 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b IZ |
2164 | TARG, NULL, |
2165 | /* don't match same null twice */ | |
2166 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 2167 | if (s != d) { |
2168 | i = strend - s; | |
2169 | SvCUR_set(TARG, d - SvPVX(TARG) + i); | |
2170 | Move(s, d, i+1, char); /* include the NUL */ | |
a0d0e21e | 2171 | } |
48c036b1 | 2172 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2173 | SPAGAIN; |
71be2cbc | 2174 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e | 2175 | } |
80b498e0 | 2176 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 | 2177 | TAINT_IF(rxtainted); |
8ec5e241 NIS |
2178 | if (SvSMAGICAL(TARG)) { |
2179 | PUTBACK; | |
2180 | mg_set(TARG); | |
2181 | SPAGAIN; | |
2182 | } | |
9212bbba | 2183 | SvTAINT(TARG); |
aefe6dfc JH |
2184 | if (doutf8) |
2185 | SvUTF8_on(TARG); | |
71be2cbc | 2186 | LEAVE_SCOPE(oldsave); |
2187 | RETURN; | |
a0d0e21e | 2188 | } |
71be2cbc | 2189 | |
f722798b IZ |
2190 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2191 | r_flags | REXEC_CHECKED)) | |
2192 | { | |
a0d0e21e LW |
2193 | if (force_on_match) { |
2194 | force_on_match = 0; | |
2195 | s = SvPV_force(TARG, len); | |
2196 | goto force_it; | |
2197 | } | |
ed252734 NC |
2198 | #ifdef PERL_COPY_ON_WRITE |
2199 | have_a_cow: | |
2200 | #endif | |
48c036b1 | 2201 | rxtainted |= RX_MATCH_TAINTED(rx); |
f2b990bf | 2202 | dstr = newSVpvn(m, s-m); |
ffc61ed2 JH |
2203 | if (DO_UTF8(TARG)) |
2204 | SvUTF8_on(dstr); | |
3280af22 | 2205 | PL_curpm = pm; |
a0d0e21e | 2206 | if (!c) { |
c09156bb | 2207 | register PERL_CONTEXT *cx; |
8ec5e241 | 2208 | SPAGAIN; |
d8f2cf8a | 2209 | ReREFCNT_inc(rx); |
a0d0e21e LW |
2210 | PUSHSUBST(cx); |
2211 | RETURNOP(cPMOP->op_pmreplroot); | |
2212 | } | |
cf93c79d | 2213 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2214 | do { |
2215 | if (iters++ > maxiters) | |
cea2e8a9 | 2216 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2217 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2218 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e LW |
2219 | m = s; |
2220 | s = orig; | |
cf93c79d | 2221 | orig = rx->subbeg; |
a0d0e21e LW |
2222 | s = orig + (m - s); |
2223 | strend = s + (strend - m); | |
2224 | } | |
cf93c79d | 2225 | m = rx->startp[0] + orig; |
db79b45b JH |
2226 | if (doutf8 && !SvUTF8(dstr)) |
2227 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); | |
2228 | else | |
2229 | sv_catpvn(dstr, s, m-s); | |
cf93c79d | 2230 | s = rx->endp[0] + orig; |
a0d0e21e LW |
2231 | if (clen) |
2232 | sv_catpvn(dstr, c, clen); | |
2233 | if (once) | |
2234 | break; | |
ffc61ed2 JH |
2235 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2236 | TARG, NULL, r_flags)); | |
db79b45b JH |
2237 | if (doutf8 && !DO_UTF8(TARG)) |
2238 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); | |
89afcb60 A |
2239 | else |
2240 | sv_catpvn(dstr, s, strend - s); | |
748a9306 | 2241 | |
ed252734 NC |
2242 | #ifdef PERL_COPY_ON_WRITE |
2243 | /* The match may make the string COW. If so, brilliant, because that's | |
2244 | just saved us one malloc, copy and free - the regexp has donated | |
2245 | the old buffer, and we malloc an entirely new one, rather than the | |
2246 | regexp malloc()ing a buffer and copying our original, only for | |
2247 | us to throw it away here during the substitution. */ | |
2248 | if (SvIsCOW(TARG)) { | |
2249 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
2250 | } else | |
2251 | #endif | |
2252 | { | |
8bd4d4c5 | 2253 | SvPV_free(TARG); |
ed252734 | 2254 | } |
f880fe2f | 2255 | SvPV_set(TARG, SvPVX(dstr)); |
748a9306 LW |
2256 | SvCUR_set(TARG, SvCUR(dstr)); |
2257 | SvLEN_set(TARG, SvLEN(dstr)); | |
f272994b | 2258 | doutf8 |= DO_UTF8(dstr); |
f880fe2f | 2259 | SvPV_set(dstr, (char*)0); |
748a9306 LW |
2260 | sv_free(dstr); |
2261 | ||
48c036b1 | 2262 | TAINT_IF(rxtainted & 1); |
f878fbec | 2263 | SPAGAIN; |
48c036b1 GS |
2264 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2265 | ||
a0d0e21e | 2266 | (void)SvPOK_only(TARG); |
f272994b | 2267 | if (doutf8) |
60aeb6fd | 2268 | SvUTF8_on(TARG); |
48c036b1 | 2269 | TAINT_IF(rxtainted); |
a0d0e21e | 2270 | SvSETMAGIC(TARG); |
9212bbba | 2271 | SvTAINT(TARG); |
4633a7c4 | 2272 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2273 | RETURN; |
2274 | } | |
5cd24f17 | 2275 | goto ret_no; |
a0d0e21e LW |
2276 | |
2277 | nope: | |
1c846c1f | 2278 | ret_no: |
8ec5e241 | 2279 | SPAGAIN; |
3280af22 | 2280 | PUSHs(&PL_sv_no); |
4633a7c4 | 2281 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2282 | RETURN; |
2283 | } | |
2284 | ||
2285 | PP(pp_grepwhile) | |
2286 | { | |
27da23d5 | 2287 | dVAR; dSP; |
a0d0e21e LW |
2288 | |
2289 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2290 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2291 | ++*PL_markstack_ptr; | |
a0d0e21e LW |
2292 | LEAVE; /* exit inner scope */ |
2293 | ||
2294 | /* All done yet? */ | |
3280af22 | 2295 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2296 | I32 items; |
54310121 | 2297 | I32 gimme = GIMME_V; |
a0d0e21e LW |
2298 | |
2299 | LEAVE; /* exit outer scope */ | |
2300 | (void)POPMARK; /* pop src */ | |
3280af22 | 2301 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2302 | (void)POPMARK; /* pop dst */ |
3280af22 | 2303 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2304 | if (gimme == G_SCALAR) { |
7cc47870 RGS |
2305 | if (PL_op->op_private & OPpGREP_LEX) { |
2306 | SV* sv = sv_newmortal(); | |
2307 | sv_setiv(sv, items); | |
2308 | PUSHs(sv); | |
2309 | } | |
2310 | else { | |
2311 | dTARGET; | |
2312 | XPUSHi(items); | |
2313 | } | |
a0d0e21e | 2314 | } |
54310121 | 2315 | else if (gimme == G_ARRAY) |
2316 | SP += items; | |
a0d0e21e LW |
2317 | RETURN; |
2318 | } | |
2319 | else { | |
2320 | SV *src; | |
2321 | ||
2322 | ENTER; /* enter inner scope */ | |
1d7c1841 | 2323 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2324 | |
3280af22 | 2325 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2326 | SvTEMP_off(src); |
59f00321 RGS |
2327 | if (PL_op->op_private & OPpGREP_LEX) |
2328 | PAD_SVl(PL_op->op_targ) = src; | |
2329 | else | |
2330 | DEFSV = src; | |
a0d0e21e LW |
2331 | |
2332 | RETURNOP(cLOGOP->op_other); | |
2333 | } | |
2334 | } | |
2335 | ||
2336 | PP(pp_leavesub) | |
2337 | { | |
27da23d5 | 2338 | dVAR; dSP; |
a0d0e21e LW |
2339 | SV **mark; |
2340 | SV **newsp; | |
2341 | PMOP *newpm; | |
2342 | I32 gimme; | |
c09156bb | 2343 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2344 | SV *sv; |
a0d0e21e LW |
2345 | |
2346 | POPBLOCK(cx,newpm); | |
5dd42e15 | 2347 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2348 | |
a1f49e72 | 2349 | TAINT_NOT; |
a0d0e21e LW |
2350 | if (gimme == G_SCALAR) { |
2351 | MARK = newsp + 1; | |
a29cdaf0 | 2352 | if (MARK <= SP) { |
a8bba7fa | 2353 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 IZ |
2354 | if (SvTEMP(TOPs)) { |
2355 | *MARK = SvREFCNT_inc(TOPs); | |
2356 | FREETMPS; | |
2357 | sv_2mortal(*MARK); | |
cd06dffe GS |
2358 | } |
2359 | else { | |
959e3673 | 2360 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2361 | FREETMPS; |
959e3673 GS |
2362 | *MARK = sv_mortalcopy(sv); |
2363 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2364 | } |
cd06dffe GS |
2365 | } |
2366 | else | |
a29cdaf0 | 2367 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe GS |
2368 | } |
2369 | else { | |
f86702cc | 2370 | MEXTEND(MARK, 0); |
3280af22 | 2371 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2372 | } |
2373 | SP = MARK; | |
2374 | } | |
54310121 | 2375 | else if (gimme == G_ARRAY) { |
f86702cc | 2376 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 | 2377 | if (!SvTEMP(*MARK)) { |
f86702cc | 2378 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2379 | TAINT_NOT; /* Each item is independent */ |
2380 | } | |
f86702cc | 2381 | } |
a0d0e21e | 2382 | } |
f86702cc | 2383 | PUTBACK; |
1c846c1f | 2384 | |
5dd42e15 DM |
2385 | LEAVE; |
2386 | cxstack_ix--; | |
b0d9ce38 | 2387 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2388 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2389 | |
b0d9ce38 | 2390 | LEAVESUB(sv); |
f39bc417 | 2391 | return cx->blk_sub.retop; |
a0d0e21e LW |
2392 | } |
2393 | ||
cd06dffe GS |
2394 | /* This duplicates the above code because the above code must not |
2395 | * get any slower by more conditions */ | |
2396 | PP(pp_leavesublv) | |
2397 | { | |
27da23d5 | 2398 | dVAR; dSP; |
cd06dffe GS |
2399 | SV **mark; |
2400 | SV **newsp; | |
2401 | PMOP *newpm; | |
2402 | I32 gimme; | |
2403 | register PERL_CONTEXT *cx; | |
b0d9ce38 | 2404 | SV *sv; |
cd06dffe GS |
2405 | |
2406 | POPBLOCK(cx,newpm); | |
5dd42e15 | 2407 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2408 | |
cd06dffe GS |
2409 | TAINT_NOT; |
2410 | ||
2411 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { | |
2412 | /* We are an argument to a function or grep(). | |
2413 | * This kind of lvalueness was legal before lvalue | |
2414 | * subroutines too, so be backward compatible: | |
2415 | * cannot report errors. */ | |
2416 | ||
2417 | /* Scalar context *is* possible, on the LHS of -> only, | |
2418 | * as in f()->meth(). But this is not an lvalue. */ | |
2419 | if (gimme == G_SCALAR) | |
2420 | goto temporise; | |
2421 | if (gimme == G_ARRAY) { | |
a8bba7fa | 2422 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe GS |
2423 | goto temporise_array; |
2424 | EXTEND_MORTAL(SP - newsp); | |
2425 | for (mark = newsp + 1; mark <= SP; mark++) { | |
2426 | if (SvTEMP(*mark)) | |
2427 | /* empty */ ; | |
2428 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) | |
2429 | *mark = sv_mortalcopy(*mark); | |
2430 | else { | |
2431 | /* Can be a localized value subject to deletion. */ | |
2432 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2433 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2434 | } |
2435 | } | |
2436 | } | |
2437 | } | |
2438 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ | |
2439 | /* Here we go for robustness, not for speed, so we change all | |
2440 | * the refcounts so the caller gets a live guy. Cannot set | |
2441 | * TEMP, so sv_2mortal is out of question. */ | |
a8bba7fa | 2442 | if (!CvLVALUE(cx->blk_sub.cv)) { |
5dd42e15 DM |
2443 | LEAVE; |
2444 | cxstack_ix--; | |
b0d9ce38 | 2445 | POPSUB(cx,sv); |
d470f89e | 2446 | PL_curpm = newpm; |
b0d9ce38 | 2447 | LEAVESUB(sv); |
d470f89e GS |
2448 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2449 | } | |
cd06dffe GS |
2450 | if (gimme == G_SCALAR) { |
2451 | MARK = newsp + 1; | |
2452 | EXTEND_MORTAL(1); | |
2453 | if (MARK == SP) { | |
d470f89e | 2454 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
5dd42e15 DM |
2455 | LEAVE; |
2456 | cxstack_ix--; | |
b0d9ce38 | 2457 | POPSUB(cx,sv); |
d470f89e | 2458 | PL_curpm = newpm; |
b0d9ce38 | 2459 | LEAVESUB(sv); |
e9f19e3c HS |
2460 | DIE(aTHX_ "Can't return %s from lvalue subroutine", |
2461 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" | |
2462 | : "a readonly value" : "a temporary"); | |
d470f89e | 2463 | } |
cd06dffe GS |
2464 | else { /* Can be a localized value |
2465 | * subject to deletion. */ | |
2466 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2467 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2468 | } |
2469 | } | |
d470f89e | 2470 | else { /* Should not happen? */ |
5dd42e15 DM |
2471 | LEAVE; |
2472 | cxstack_ix--; | |
b0d9ce38 | 2473 | POPSUB(cx,sv); |
d470f89e | 2474 | PL_curpm = newpm; |
b0d9ce38 | 2475 | LEAVESUB(sv); |
d470f89e | 2476 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe | 2477 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e | 2478 | } |
cd06dffe GS |
2479 | SP = MARK; |
2480 | } | |
2481 | else if (gimme == G_ARRAY) { | |
2482 | EXTEND_MORTAL(SP - newsp); | |
2483 | for (mark = newsp + 1; mark <= SP; mark++) { | |
f206cdda AMS |
2484 | if (*mark != &PL_sv_undef |
2485 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { | |
d470f89e GS |
2486 | /* Might be flattened array after $#array = */ |
2487 | PUTBACK; | |
5dd42e15 DM |
2488 | LEAVE; |
2489 | cxstack_ix--; | |
b0d9ce38 | 2490 | POPSUB(cx,sv); |
d470f89e | 2491 | PL_curpm = newpm; |
b0d9ce38 | 2492 | LEAVESUB(sv); |
f206cdda AMS |
2493 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2494 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
d470f89e | 2495 | } |
cd06dffe | 2496 | else { |
cd06dffe GS |
2497 | /* Can be a localized value subject to deletion. */ |
2498 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2499 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2500 | } |
2501 | } | |
2502 | } | |
2503 | } | |
2504 | else { | |
2505 | if (gimme == G_SCALAR) { | |
2506 | temporise: | |
2507 | MARK = newsp + 1; | |
2508 | if (MARK <= SP) { | |
a8bba7fa | 2509 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe GS |
2510 | if (SvTEMP(TOPs)) { |
2511 | *MARK = SvREFCNT_inc(TOPs); | |
2512 | FREETMPS; | |
2513 | sv_2mortal(*MARK); | |
2514 | } | |
2515 | else { | |
959e3673 | 2516 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe | 2517 | FREETMPS; |
959e3673 GS |
2518 | *MARK = sv_mortalcopy(sv); |
2519 | SvREFCNT_dec(sv); | |
cd06dffe GS |
2520 | } |
2521 | } | |
2522 | else | |
2523 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
2524 | } | |
2525 | else { | |
2526 | MEXTEND(MARK, 0); | |
2527 | *MARK = &PL_sv_undef; | |
2528 | } | |
2529 | SP = MARK; | |
2530 | } | |
2531 | else if (gimme == G_ARRAY) { | |
2532 | temporise_array: | |
2533 | for (MARK = newsp + 1; MARK <= SP; MARK++) { | |
2534 | if (!SvTEMP(*MARK)) { | |
2535 | *MARK = sv_mortalcopy(*MARK); | |
2536 | TAINT_NOT; /* Each item is independent */ | |
2537 | } | |
2538 | } | |
2539 | } | |
2540 | } | |
2541 | PUTBACK; | |
1c846c1f | 2542 | |
5dd42e15 DM |
2543 | LEAVE; |
2544 | cxstack_ix--; | |
b0d9ce38 | 2545 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe GS |
2546 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2547 | ||
b0d9ce38 | 2548 | LEAVESUB(sv); |
f39bc417 | 2549 | return cx->blk_sub.retop; |
cd06dffe GS |
2550 | } |
2551 | ||
2552 | ||
76e3520e | 2553 | STATIC CV * |
cea2e8a9 | 2554 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 | 2555 | { |
3280af22 | 2556 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 | 2557 | |
f398eb67 | 2558 | save_item(dbsv); |
491527d0 GS |
2559 | if (!PERLDB_SUB_NN) { |
2560 | GV *gv = CvGV(cv); | |
2561 | ||
491527d0 | 2562 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) |
1c846c1f | 2563 | || strEQ(GvNAME(gv), "END") |
491527d0 GS |
2564 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
2565 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) | |
2566 | && (gv = (GV*)*svp) ))) { | |
2567 | /* Use GV from the stack as a fallback. */ | |
2568 | /* GV is potentially non-unique, or contain different CV. */ | |
c2e66d9e GS |
2569 | SV *tmp = newRV((SV*)cv); |
2570 | sv_setsv(dbsv, tmp); | |
2571 | SvREFCNT_dec(tmp); | |
491527d0 GS |
2572 | } |
2573 | else { | |
2574 | gv_efullname3(dbsv, gv, Nullch); | |
2575 | } | |
3de9ffa1 MB |
2576 | } |
2577 | else { | |
a9c4fd4e | 2578 | const int type = SvTYPE(dbsv); |
f398eb67 NC |
2579 | if (type < SVt_PVIV && type != SVt_IV) |
2580 | sv_upgrade(dbsv, SVt_PVIV); | |
155aba94 | 2581 | (void)SvIOK_on(dbsv); |
45977657 | 2582 | SvIV_set(dbsv, PTR2IV(cv)); /* Do it the quickest way */ |
3de9ffa1 | 2583 | } |
491527d0 | 2584 | |
3de9ffa1 | 2585 | if (CvXSUB(cv)) |
3280af22 NIS |
2586 | PL_curcopdb = PL_curcop; |
2587 | cv = GvCV(PL_DBsub); | |
3de9ffa1 MB |
2588 | return cv; |
2589 | } | |
2590 | ||
a0d0e21e LW |
2591 | PP(pp_entersub) |
2592 | { | |
27da23d5 | 2593 | dVAR; dSP; dPOPss; |
a0d0e21e LW |
2594 | GV *gv; |
2595 | HV *stash; | |
2596 | register CV *cv; | |
c09156bb | 2597 | register PERL_CONTEXT *cx; |
5d94fbed | 2598 | I32 gimme; |
a9c4fd4e | 2599 | const bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2600 | |
2601 | if (!sv) | |
cea2e8a9 | 2602 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e | 2603 | switch (SvTYPE(sv)) { |
f1025168 NC |
2604 | /* This is overwhelming the most common case: */ |
2605 | case SVt_PVGV: | |
2606 | if (!(cv = GvCVu((GV*)sv))) | |
2607 | cv = sv_2cv(sv, &stash, &gv, FALSE); | |
2608 | if (!cv) { | |
2609 | ENTER; | |
2610 | SAVETMPS; | |
2611 | goto try_autoload; | |
2612 | } | |
2613 | break; | |
a0d0e21e LW |
2614 | default: |
2615 | if (!SvROK(sv)) { | |
a9c4fd4e | 2616 | const char *sym; |
3280af22 | 2617 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a | 2618 | if (hasargs) |
3280af22 | 2619 | SP = PL_stack_base + POPMARK; |
a0d0e21e | 2620 | RETURN; |
fb73857a | 2621 | } |
15ff848f CS |
2622 | if (SvGMAGICAL(sv)) { |
2623 | mg_get(sv); | |
f5f1d18e AMS |
2624 | if (SvROK(sv)) |
2625 | goto got_rv; | |
15ff848f CS |
2626 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; |
2627 | } | |
a9c4fd4e AL |
2628 | else { |
2629 | STRLEN n_a; | |
2d8e6c8d | 2630 | sym = SvPV(sv, n_a); |
a9c4fd4e | 2631 | } |
15ff848f | 2632 | if (!sym) |
cea2e8a9 | 2633 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2634 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 | 2635 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 | 2636 | cv = get_cv(sym, TRUE); |
a0d0e21e LW |
2637 | break; |
2638 | } | |
f5f1d18e | 2639 | got_rv: |
f5284f61 IZ |
2640 | { |
2641 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ | |
2642 | tryAMAGICunDEREF(to_cv); | |
2643 | } | |
a0d0e21e LW |
2644 | cv = (CV*)SvRV(sv); |
2645 | if (SvTYPE(cv) == SVt_PVCV) | |
2646 | break; | |
2647 | /* FALL THROUGH */ | |
2648 | case SVt_PVHV: | |
2649 | case SVt_PVAV: | |
cea2e8a9 | 2650 | DIE(aTHX_ "Not a CODE reference"); |
f1025168 | 2651 | /* This is the second most common case: */ |
a0d0e21e LW |
2652 | case SVt_PVCV: |
2653 | cv = (CV*)sv; | |
2654 | break; | |
a0d0e21e LW |
2655 | } |
2656 | ||
2657 | ENTER; | |
2658 | SAVETMPS; | |
2659 | ||
2660 | retry: | |
a0d0e21e | 2661 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
f1025168 | 2662 | goto fooey; |
a0d0e21e LW |
2663 | } |
2664 | ||
54310121 | 2665 | gimme = GIMME_V; |
67caa1fe | 2666 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
06492da6 SF |
2667 | if (CvASSERTION(cv) && PL_DBassertion) |
2668 | sv_setiv(PL_DBassertion, 1); | |
2669 | ||
4f01c5a5 | 2670 | cv = get_db_sub(&sv, cv); |
ccafdc96 RGS |
2671 | if (!cv || (!CvXSUB(cv) && !CvSTART(cv))) |
2672 | DIE(aTHX_ "No DB::sub routine defined"); | |
67caa1fe | 2673 | } |
a0d0e21e | 2674 | |
f1025168 NC |
2675 | if (!(CvXSUB(cv))) { |
2676 | /* This path taken at least 75% of the time */ | |
a0d0e21e LW |
2677 | dMARK; |
2678 | register I32 items = SP - MARK; | |
a0d0e21e | 2679 | AV* padlist = CvPADLIST(cv); |
a0d0e21e LW |
2680 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2681 | PUSHSUB(cx); | |
f39bc417 | 2682 | cx->blk_sub.retop = PL_op->op_next; |
a0d0e21e | 2683 | CvDEPTH(cv)++; |
6b35e009 GS |
2684 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2685 | * that eval'' ops within this sub know the correct lexical space. | |
a3985cdc DM |
2686 | * Owing the speed considerations, we choose instead to search for |
2687 | * the cv using find_runcv() when calling doeval(). | |
6b35e009 | 2688 | */ |
b36bdeca | 2689 | if (CvDEPTH(cv) >= 2) { |
1d7c1841 | 2690 | PERL_STACK_OVERFLOW_CHECK(); |
26019298 | 2691 | pad_push(padlist, CvDEPTH(cv)); |
a0d0e21e | 2692 | } |
dd2155a4 | 2693 | PAD_SET_CUR(padlist, CvDEPTH(cv)); |
6d4ff0d2 | 2694 | if (hasargs) |
6d4ff0d2 MB |
2695 | { |
2696 | AV* av; | |
a0d0e21e LW |
2697 | SV** ary; |
2698 | ||
77a005ab | 2699 | #if 0 |
bf49b057 | 2700 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2701 | "%p entersub preparing @_\n", thr)); |
77a005ab | 2702 | #endif |
dd2155a4 | 2703 | av = (AV*)PAD_SVl(0); |
221373f0 GS |
2704 | if (AvREAL(av)) { |
2705 | /* @_ is normally not REAL--this should only ever | |
2706 | * happen when DB::sub() calls things that modify @_ */ | |
2707 | av_clear(av); | |
2708 | AvREAL_off(av); | |
2709 | AvREIFY_on(av); | |
2710 | } | |
3280af22 NIS |
2711 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2712 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); | |
dd2155a4 | 2713 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2714 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2715 | ++MARK; |
2716 | ||
2717 | if (items > AvMAX(av) + 1) { | |
2718 | ary = AvALLOC(av); | |
2719 | if (AvARRAY(av) != ary) { | |
2720 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
f880fe2f | 2721 | SvPV_set(av, (char*)ary); |
a0d0e21e LW |
2722 | } |
2723 | if (items > AvMAX(av) + 1) { | |
2724 | AvMAX(av) = items - 1; | |
2725 | Renew(ary,items,SV*); | |
2726 | AvALLOC(av) = ary; | |
f880fe2f | 2727 | SvPV_set(av, (char*)ary); |
a0d0e21e LW |
2728 | } |
2729 | } | |
2730 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2731 | AvFILLp(av) = items - 1; |
1c846c1f | 2732 | |
a0d0e21e LW |
2733 | while (items--) { |
2734 | if (*MARK) | |
2735 | SvTEMP_off(*MARK); | |
2736 | MARK++; | |
2737 | } | |
2738 | } | |
4a925ff6 GS |
2739 | /* warning must come *after* we fully set up the context |
2740 | * stuff so that __WARN__ handlers can safely dounwind() | |
2741 | * if they want to | |
2742 | */ | |
2743 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) | |
2744 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) | |
2745 | sub_crush_depth(cv); | |
77a005ab | 2746 | #if 0 |
bf49b057 | 2747 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2748 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab | 2749 | #endif |
a0d0e21e LW |
2750 | RETURNOP(CvSTART(cv)); |
2751 | } | |
f1025168 NC |
2752 | else { |
2753 | #ifdef PERL_XSUB_OLDSTYLE | |
2754 | if (CvOLDSTYLE(cv)) { | |
2755 | I32 (*fp3)(int,int,int); | |
2756 | dMARK; | |
2757 | register I32 items = SP - MARK; | |
2758 | /* We dont worry to copy from @_. */ | |
2759 | while (SP > mark) { | |
2760 | SP[1] = SP[0]; | |
2761 | SP--; | |
2762 | } | |
2763 | PL_stack_sp = mark + 1; | |
2764 | fp3 = (I32(*)(int,int,int))CvXSUB(cv); | |
2765 | items = (*fp3)(CvXSUBANY(cv).any_i32, | |
2766 | MARK - PL_stack_base + 1, | |
2767 | items); | |
2768 | PL_stack_sp = PL_stack_base + items; | |
2769 | } | |
2770 | else | |
2771 | #endif /* PERL_XSUB_OLDSTYLE */ | |
2772 | { | |
2773 | I32 markix = TOPMARK; | |
2774 | ||
2775 | PUTBACK; | |
2776 | ||
2777 | if (!hasargs) { | |
2778 | /* Need to copy @_ to stack. Alternative may be to | |
2779 | * switch stack to @_, and copy return values | |
2780 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
2781 | AV* av; | |
2782 | I32 items; | |
2783 | av = GvAV(PL_defgv); | |
2784 | items = AvFILLp(av) + 1; /* @_ is not tieable */ | |
2785 | ||
2786 | if (items) { | |
2787 | /* Mark is at the end of the stack. */ | |
2788 | EXTEND(SP, items); | |
2789 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2790 | SP += items; | |
2791 | PUTBACK ; | |
2792 | } | |
2793 | } | |
2794 | /* We assume first XSUB in &DB::sub is the called one. */ | |
2795 | if (PL_curcopdb) { | |
2796 | SAVEVPTR(PL_curcop); | |
2797 | PL_curcop = PL_curcopdb; | |
2798 | PL_curcopdb = NULL; | |
2799 | } | |
2800 | /* Do we need to open block here? XXXX */ | |
2801 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
2802 | ||
2803 | /* Enforce some sanity in scalar context. */ | |
2804 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { | |
2805 | if (markix > PL_stack_sp - PL_stack_base) | |
2806 | *(PL_stack_base + markix) = &PL_sv_undef; | |
2807 | else | |
2808 | *(PL_stack_base + markix) = *PL_stack_sp; | |
2809 | PL_stack_sp = PL_stack_base + markix; | |
2810 | } | |
2811 | } | |
2812 | LEAVE; | |
2813 | return NORMAL; | |
2814 | } | |
2815 | ||
2816 | assert (0); /* Cannot get here. */ | |
2817 | /* This is deliberately moved here as spaghetti code to keep it out of the | |
2818 | hot path. */ | |
2819 | { | |
2820 | GV* autogv; | |
2821 | SV* sub_name; | |
2822 | ||
2823 | fooey: | |
2824 | /* anonymous or undef'd function leaves us no recourse */ | |
2825 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
2826 | DIE(aTHX_ "Undefined subroutine called"); | |
2827 | ||
2828 | /* autoloaded stub? */ | |
2829 | if (cv != GvCV(gv)) { | |
2830 | cv = GvCV(gv); | |
2831 | } | |
2832 | /* should call AUTOLOAD now? */ | |
2833 | else { | |
2834 | try_autoload: | |
2835 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), | |
2836 | FALSE))) | |
2837 | { | |
2838 | cv = GvCV(autogv); | |
2839 | } | |
2840 | /* sorry */ | |
2841 | else { | |
2842 | sub_name = sv_newmortal(); | |
2843 | gv_efullname3(sub_name, gv, Nullch); | |
35c1215d | 2844 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", sub_name); |
f1025168 NC |
2845 | } |
2846 | } | |
2847 | if (!cv) | |
2848 | DIE(aTHX_ "Not a CODE reference"); | |
2849 | goto retry; | |
2850 | } | |
a0d0e21e LW |
2851 | } |
2852 | ||
44a8e56a | 2853 | void |
864dbfa3 | 2854 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2855 | { |
2856 | if (CvANON(cv)) | |
9014280d | 2857 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 2858 | else { |
2859 | SV* tmpstr = sv_newmortal(); | |
2860 | gv_efullname3(tmpstr, CvGV(cv), Nullch); | |
35c1215d NC |
2861 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
2862 | tmpstr); | |
44a8e56a | 2863 | } |
2864 | } | |
2865 | ||
a0d0e21e LW |
2866 | PP(pp_aelem) |
2867 | { | |
39644a26 | 2868 | dSP; |
a0d0e21e | 2869 | SV** svp; |
d804643f SC |
2870 | SV* elemsv = POPs; |
2871 | IV elem = SvIV(elemsv); | |
68dc0745 | 2872 | AV* av = (AV*)POPs; |
e1ec3a88 AL |
2873 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
2874 | const U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > av_len(av)); | |
be6c24e0 | 2875 | SV *sv; |
a0d0e21e | 2876 | |
e35c1634 | 2877 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
35c1215d | 2878 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Use of reference \"%"SVf"\" as array index", elemsv); |
748a9306 | 2879 | if (elem > 0) |
3280af22 | 2880 | elem -= PL_curcop->cop_arybase; |
a0d0e21e LW |
2881 | if (SvTYPE(av) != SVt_PVAV) |
2882 | RETPUSHUNDEF; | |
68dc0745 | 2883 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2884 | if (lval) { |
2b573ace JH |
2885 | #ifdef PERL_MALLOC_WRAP |
2886 | static const char oom_array_extend[] = | |
2887 | "Out of memory during array extend"; /* Duplicated in av.c */ | |
2888 | if (SvUOK(elemsv)) { | |
a9c4fd4e | 2889 | const UV uv = SvUV(elemsv); |
2b573ace JH |
2890 | elem = uv > IV_MAX ? IV_MAX : uv; |
2891 | } | |
2892 | else if (SvNOK(elemsv)) | |
2893 | elem = (IV)SvNV(elemsv); | |
2894 | if (elem > 0) | |
2895 | MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend); | |
2896 | #endif | |
3280af22 | 2897 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 2898 | SV* lv; |
2899 | if (!defer) | |
cea2e8a9 | 2900 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 2901 | lv = sv_newmortal(); |
2902 | sv_upgrade(lv, SVt_PVLV); | |
2903 | LvTYPE(lv) = 'y'; | |
14befaf4 | 2904 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 | 2905 | LvTARG(lv) = SvREFCNT_inc(av); |
2906 | LvTARGOFF(lv) = elem; | |
2907 | LvTARGLEN(lv) = 1; | |
2908 | PUSHs(lv); | |
2909 | RETURN; | |
2910 | } | |
bfc4de9f | 2911 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 | 2912 | save_aelem(av, elem, svp); |
533c011a NIS |
2913 | else if (PL_op->op_private & OPpDEREF) |
2914 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 2915 | } |
3280af22 | 2916 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
2917 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2918 | sv = sv_mortalcopy(sv); | |
2919 | PUSHs(sv); | |
a0d0e21e LW |
2920 | RETURN; |
2921 | } | |
2922 | ||
02a9e968 | 2923 | void |
864dbfa3 | 2924 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 CS |
2925 | { |
2926 | if (SvGMAGICAL(sv)) | |
2927 | mg_get(sv); | |
2928 | if (!SvOK(sv)) { | |
2929 | if (SvREADONLY(sv)) | |
cea2e8a9 | 2930 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc | 2931 | if (SvTYPE(sv) < SVt_RV) |
2932 | sv_upgrade(sv, SVt_RV); | |
2933 | else if (SvTYPE(sv) >= SVt_PV) { | |
8bd4d4c5 | 2934 | SvPV_free(sv); |
b162af07 SP |
2935 | SvLEN_set(sv, 0); |
2936 | SvCUR_set(sv, 0); | |
5f05dabc | 2937 | } |
68dc0745 | 2938 | switch (to_what) { |
5f05dabc | 2939 | case OPpDEREF_SV: |
b162af07 | 2940 | SvRV_set(sv, NEWSV(355,0)); |
5f05dabc | 2941 | break; |
2942 | case OPpDEREF_AV: | |
b162af07 | 2943 | SvRV_set(sv, (SV*)newAV()); |
5f05dabc | 2944 | break; |
2945 | case OPpDEREF_HV: | |
b162af07 | 2946 | SvRV_set(sv, (SV*)newHV()); |
5f05dabc | 2947 | break; |
2948 | } | |
02a9e968 CS |
2949 | SvROK_on(sv); |
2950 | SvSETMAGIC(sv); | |
2951 | } | |
2952 | } | |
2953 | ||
a0d0e21e LW |
2954 | PP(pp_method) |
2955 | { | |
39644a26 | 2956 | dSP; |
f5d5a27c CS |
2957 | SV* sv = TOPs; |
2958 | ||
2959 | if (SvROK(sv)) { | |
eda383f2 | 2960 | SV* rsv = SvRV(sv); |
f5d5a27c CS |
2961 | if (SvTYPE(rsv) == SVt_PVCV) { |
2962 | SETs(rsv); | |
2963 | RETURN; | |
2964 | } | |
2965 | } | |
2966 | ||
2967 | SETs(method_common(sv, Null(U32*))); | |
2968 | RETURN; | |
2969 | } | |
2970 | ||
2971 | PP(pp_method_named) | |
2972 | { | |
39644a26 | 2973 | dSP; |
3848b962 | 2974 | SV* sv = cSVOP_sv; |
f5d5a27c CS |
2975 | U32 hash = SvUVX(sv); |
2976 | ||
2977 | XPUSHs(method_common(sv, &hash)); | |
2978 | RETURN; | |
2979 | } | |
2980 | ||
2981 | STATIC SV * | |
2982 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
2983 | { | |
a0d0e21e LW |
2984 | SV* sv; |
2985 | SV* ob; | |
2986 | GV* gv; | |
56304f61 | 2987 | HV* stash; |
f5d5a27c | 2988 | STRLEN namelen; |
a9c4fd4e | 2989 | const char* packname = 0; |
0dae17bd | 2990 | SV *packsv = Nullsv; |
ac91690f | 2991 | STRLEN packlen; |
a9c4fd4e | 2992 | const char *name = SvPV(meth, namelen); |
a0d0e21e | 2993 | |
3280af22 | 2994 | sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c | 2995 | |
4f1b7578 SC |
2996 | if (!sv) |
2997 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); | |
2998 | ||
16d20bd9 | 2999 | if (SvGMAGICAL(sv)) |
af09ea45 | 3000 | mg_get(sv); |
a0d0e21e | 3001 | if (SvROK(sv)) |
16d20bd9 | 3002 | ob = (SV*)SvRV(sv); |
a0d0e21e LW |
3003 | else { |
3004 | GV* iogv; | |
a0d0e21e | 3005 | |
af09ea45 | 3006 | /* this isn't a reference */ |
56304f61 | 3007 | packname = Nullch; |
081fc587 AB |
3008 | |
3009 | if(SvOK(sv) && (packname = SvPV(sv, packlen))) { | |
7e8961ec AB |
3010 | HE* he; |
3011 | he = hv_fetch_ent(PL_stashcache, sv, 0, 0); | |
081fc587 | 3012 | if (he) { |
5e6396ae | 3013 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
081fc587 AB |
3014 | goto fetch; |
3015 | } | |
3016 | } | |
3017 | ||
a0d0e21e | 3018 | if (!SvOK(sv) || |
05f5af9a | 3019 | !(packname) || |
7a5fd60d | 3020 | !(iogv = gv_fetchsv(sv, FALSE, SVt_PVIO)) || |
a0d0e21e LW |
3021 | !(ob=(SV*)GvIO(iogv))) |
3022 | { | |
af09ea45 | 3023 | /* this isn't the name of a filehandle either */ |
1c846c1f | 3024 | if (!packname || |
fd400ab9 | 3025 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 3026 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
3027 | : !isIDFIRST(*packname) |
3028 | )) | |
3029 | { | |
f5d5a27c CS |
3030 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
3031 | SvOK(sv) ? "without a package or object reference" | |
3032 | : "on an undefined value"); | |
834a4ddd | 3033 | } |
af09ea45 IK |
3034 | /* assume it's a package name */ |
3035 | stash = gv_stashpvn(packname, packlen, FALSE); | |
0dae17bd GS |
3036 | if (!stash) |
3037 | packsv = sv; | |
081fc587 | 3038 | else { |
5e6396ae | 3039 | SV* ref = newSViv(PTR2IV(stash)); |
7e8961ec AB |
3040 | hv_store(PL_stashcache, packname, packlen, ref, 0); |
3041 | } | |
ac91690f | 3042 | goto fetch; |
a0d0e21e | 3043 | } |
af09ea45 | 3044 | /* it _is_ a filehandle name -- replace with a reference */ |
3280af22 | 3045 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e LW |
3046 | } |
3047 | ||
af09ea45 | 3048 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 GS |
3049 | if (!ob || !(SvOBJECT(ob) |
3050 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) | |
3051 | && SvOBJECT(ob)))) | |
3052 | { | |
f5d5a27c CS |
3053 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
3054 | name); | |
f0d43078 | 3055 | } |
a0d0e21e | 3056 | |
56304f61 | 3057 | stash = SvSTASH(ob); |
a0d0e21e | 3058 | |
ac91690f | 3059 | fetch: |
af09ea45 IK |
3060 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3061 | gv_fetchmethod can cope (it seems they can) */ | |
3062 | ||
f5d5a27c CS |
3063 | /* shortcut for simple names */ |
3064 | if (hashp) { | |
3065 | HE* he = hv_fetch_ent(stash, meth, 0, *hashp); | |
3066 | if (he) { | |
3067 | gv = (GV*)HeVAL(he); | |
3068 | if (isGV(gv) && GvCV(gv) && | |
3069 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) | |
3070 | return (SV*)GvCV(gv); | |
3071 | } | |
3072 | } | |
3073 | ||
0dae17bd | 3074 | gv = gv_fetchmethod(stash ? stash : (HV*)packsv, name); |
af09ea45 | 3075 | |
56304f61 | 3076 | if (!gv) { |
af09ea45 IK |
3077 | /* This code tries to figure out just what went wrong with |
3078 | gv_fetchmethod. It therefore needs to duplicate a lot of | |
3079 | the internals of that function. We can't move it inside | |
3080 | Perl_gv_fetchmethod_autoload(), however, since that would | |
3081 | cause UNIVERSAL->can("NoSuchPackage::foo") to croak, and we | |
3082 | don't want that. | |
3083 | */ | |
a9c4fd4e AL |
3084 | const char* leaf = name; |
3085 | const char* sep = Nullch; | |
3086 | const char* p; | |
56304f61 CS |
3087 | |
3088 | for (p = name; *p; p++) { | |
3089 | if (*p == '\'') | |
3090 | sep = p, leaf = p + 1; | |
3091 | else if (*p == ':' && *(p + 1) == ':') | |
3092 | sep = p, leaf = p + 2; | |
3093 | } | |
3094 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { | |
af09ea45 IK |
3095 | /* the method name is unqualified or starts with SUPER:: */ |
3096 | packname = sep ? CopSTASHPV(PL_curcop) : | |
3097 | stash ? HvNAME(stash) : packname; | |
e27ad1f2 AV |
3098 | if (!packname) |
3099 | Perl_croak(aTHX_ | |
3100 | "Can't use anonymous symbol table for method lookup"); | |
3101 | else | |
3102 | packlen = strlen(packname); | |
56304f61 CS |
3103 | } |
3104 | else { | |
af09ea45 | 3105 | /* the method name is qualified */ |
56304f61 CS |
3106 | packname = name; |
3107 | packlen = sep - name; | |
3108 | } | |
af09ea45 IK |
3109 | |
3110 | /* we're relying on gv_fetchmethod not autovivifying the stash */ | |
3111 | if (gv_stashpvn(packname, packlen, FALSE)) { | |
c1899e02 | 3112 | Perl_croak(aTHX_ |
af09ea45 IK |
3113 | "Can't locate object method \"%s\" via package \"%.*s\"", |
3114 | leaf, (int)packlen, packname); | |
c1899e02 GS |
3115 | } |
3116 | else { | |
3117 | Perl_croak(aTHX_ | |
af09ea45 IK |
3118 | "Can't locate object method \"%s\" via package \"%.*s\"" |
3119 | " (perhaps you forgot to load \"%.*s\"?)", | |
3120 | leaf, (int)packlen, packname, (int)packlen, packname); | |
c1899e02 | 3121 | } |
56304f61 | 3122 | } |
f5d5a27c | 3123 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e | 3124 | } |
241d1a3b NC |
3125 | |
3126 | /* | |
3127 | * Local variables: | |
3128 | * c-indentation-style: bsd | |
3129 | * c-basic-offset: 4 | |
3130 | * indent-tabs-mode: t | |
3131 | * End: | |
3132 | * | |
37442d52 RGS |
3133 | * ex: set ts=8 sts=4 sw=4 noet: |
3134 | */ |