Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
b5f8cc5c | 4 | * 2000, 2001, 2002, 2003, 2004, 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 | STRLEN llen; |
149 | char* lpv; | |
150 | bool lbyte; | |
151 | STRLEN rlen; | |
152 | char* rpv = SvPV(right, rlen); /* mg_get(right) happens here */ | |
90f5826e | 153 | bool rbyte = !DO_UTF8(right), rcopied = FALSE; |
8d6d96c1 HS |
154 | |
155 | if (TARG == right && right != left) { | |
156 | right = sv_2mortal(newSVpvn(rpv, rlen)); | |
1e54db1a | 157 | rpv = SvPV(right, rlen); /* no point setting UTF-8 here */ |
db79b45b | 158 | rcopied = TRUE; |
8d6d96c1 | 159 | } |
7889fe52 | 160 | |
8d6d96c1 HS |
161 | if (TARG != left) { |
162 | 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 */ | |
171 | if (SvGMAGICAL(left)) | |
172 | mg_get(left); /* or mg_get(left) may happen here */ | |
173 | if (!SvOK(TARG)) | |
174 | sv_setpv(left, ""); | |
175 | lpv = SvPV_nomg(left, llen); | |
90f5826e TS |
176 | lbyte = !DO_UTF8(left); |
177 | if (IN_BYTES) | |
178 | SvUTF8_off(TARG); | |
8d6d96c1 | 179 | } |
a12c0f56 | 180 | |
fd15e783 PN |
181 | #if defined(PERL_Y2KWARN) |
182 | if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K) && SvOK(TARG)) { | |
8d6d96c1 HS |
183 | if (llen >= 2 && lpv[llen - 2] == '1' && lpv[llen - 1] == '9' |
184 | && (llen == 2 || !isDIGIT(lpv[llen - 3]))) | |
185 | { | |
9014280d | 186 | Perl_warner(aTHX_ packWARN(WARN_Y2K), "Possible Y2K bug: %s", |
8d6d96c1 HS |
187 | "about to append an integer to '19'"); |
188 | } | |
fd15e783 PN |
189 | } |
190 | #endif | |
191 | ||
8d6d96c1 HS |
192 | if (lbyte != rbyte) { |
193 | if (lbyte) | |
194 | sv_utf8_upgrade_nomg(TARG); | |
195 | else { | |
db79b45b JH |
196 | if (!rcopied) |
197 | right = sv_2mortal(newSVpvn(rpv, rlen)); | |
8d6d96c1 HS |
198 | sv_utf8_upgrade_nomg(right); |
199 | rpv = SvPV(right, rlen); | |
69b47968 | 200 | } |
a0d0e21e | 201 | } |
8d6d96c1 | 202 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 203 | |
a0d0e21e LW |
204 | SETTARG; |
205 | RETURN; | |
748a9306 | 206 | } |
a0d0e21e LW |
207 | } |
208 | ||
209 | PP(pp_padsv) | |
210 | { | |
39644a26 | 211 | dSP; dTARGET; |
a0d0e21e | 212 | XPUSHs(TARG); |
533c011a NIS |
213 | if (PL_op->op_flags & OPf_MOD) { |
214 | if (PL_op->op_private & OPpLVAL_INTRO) | |
dd2155a4 | 215 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); |
a62b51b8 | 216 | if (PL_op->op_private & OPpDEREF) { |
8ec5e241 | 217 | PUTBACK; |
dd2155a4 | 218 | vivify_ref(PAD_SVl(PL_op->op_targ), PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
219 | SPAGAIN; |
220 | } | |
4633a7c4 | 221 | } |
a0d0e21e LW |
222 | RETURN; |
223 | } | |
224 | ||
225 | PP(pp_readline) | |
226 | { | |
f5284f61 | 227 | tryAMAGICunTARGET(iter, 0); |
3280af22 | 228 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 | 229 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f | 230 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 | 231 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 | 232 | else { |
f5284f61 IZ |
233 | dSP; |
234 | XPUSHs((SV*)PL_last_in_gv); | |
235 | PUTBACK; | |
cea2e8a9 | 236 | pp_rv2gv(); |
f5284f61 | 237 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 IZ |
238 | } |
239 | } | |
a0d0e21e LW |
240 | return do_readline(); |
241 | } | |
242 | ||
243 | PP(pp_eq) | |
244 | { | |
39644a26 | 245 | dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f | 246 | #ifndef NV_PRESERVES_UV |
0bdaccee | 247 | if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) { |
e61d22ef NC |
248 | SP--; |
249 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); | |
4c9fe80f AS |
250 | RETURN; |
251 | } | |
252 | #endif | |
28e5dec8 JH |
253 | #ifdef PERL_PRESERVE_IVUV |
254 | SvIV_please(TOPs); | |
255 | if (SvIOK(TOPs)) { | |
4c9fe80f AS |
256 | /* Unless the left argument is integer in range we are going |
257 | to have to use NV maths. Hence only attempt to coerce the | |
258 | right argument if we know the left is integer. */ | |
28e5dec8 JH |
259 | SvIV_please(TOPm1s); |
260 | if (SvIOK(TOPm1s)) { | |
261 | bool auvok = SvUOK(TOPm1s); | |
262 | bool buvok = SvUOK(TOPs); | |
a12c0f56 | 263 | |
1605159e NC |
264 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
265 | /* Casting IV to UV before comparison isn't going to matter | |
266 | on 2s complement. On 1s complement or sign&magnitude | |
267 | (if we have any of them) it could to make negative zero | |
268 | differ from normal zero. As I understand it. (Need to | |
269 | check - is negative zero implementation defined behaviour | |
270 | anyway?). NWC */ | |
271 | UV buv = SvUVX(POPs); | |
272 | UV auv = SvUVX(TOPs); | |
28e5dec8 | 273 | |
28e5dec8 JH |
274 | SETs(boolSV(auv == buv)); |
275 | RETURN; | |
276 | } | |
277 | { /* ## Mixed IV,UV ## */ | |
1605159e | 278 | SV *ivp, *uvp; |
28e5dec8 | 279 | IV iv; |
28e5dec8 | 280 | |
1605159e | 281 | /* == is commutative so doesn't matter which is left or right */ |
28e5dec8 | 282 | if (auvok) { |
1605159e NC |
283 | /* top of stack (b) is the iv */ |
284 | ivp = *SP; | |
285 | uvp = *--SP; | |
286 | } else { | |
287 | uvp = *SP; | |
288 | ivp = *--SP; | |
289 | } | |
290 | iv = SvIVX(ivp); | |
291 | if (iv < 0) { | |
292 | /* As uv is a UV, it's >0, so it cannot be == */ | |
293 | SETs(&PL_sv_no); | |
294 | RETURN; | |
295 | } | |
28e5dec8 | 296 | /* we know iv is >= 0 */ |
1605159e | 297 | SETs(boolSV((UV)iv == SvUVX(uvp))); |
28e5dec8 JH |
298 | RETURN; |
299 | } | |
300 | } | |
301 | } | |
302 | #endif | |
a0d0e21e LW |
303 | { |
304 | dPOPnv; | |
54310121 | 305 | SETs(boolSV(TOPn == value)); |
a0d0e21e LW |
306 | RETURN; |
307 | } | |
308 | } | |
309 | ||
310 | PP(pp_preinc) | |
311 | { | |
39644a26 | 312 | dSP; |
f39684df | 313 | if (SvTYPE(TOPs) >= SVt_PVGV && SvTYPE(TOPs) != SVt_PVLV) |
d470f89e | 314 | DIE(aTHX_ PL_no_modify); |
3510b4a1 NC |
315 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
316 | && SvIVX(TOPs) != IV_MAX) | |
55497cff | 317 | { |
748a9306 | 318 | ++SvIVX(TOPs); |
55497cff | 319 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 320 | } |
28e5dec8 | 321 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 | 322 | sv_inc(TOPs); |
a0d0e21e LW |
323 | SvSETMAGIC(TOPs); |
324 | return NORMAL; | |
325 | } | |
326 | ||
327 | PP(pp_or) | |
328 | { | |
39644a26 | 329 | dSP; |
a0d0e21e LW |
330 | if (SvTRUE(TOPs)) |
331 | RETURN; | |
332 | else { | |
333 | --SP; | |
334 | RETURNOP(cLOGOP->op_other); | |
335 | } | |
336 | } | |
337 | ||
c963b151 BD |
338 | PP(pp_dor) |
339 | { | |
340 | /* Most of this is lifted straight from pp_defined */ | |
341 | dSP; | |
342 | register SV* sv; | |
343 | ||
344 | sv = TOPs; | |
345 | if (!sv || !SvANY(sv)) { | |
346 | --SP; | |
347 | RETURNOP(cLOGOP->op_other); | |
348 | } | |
349 | ||
350 | switch (SvTYPE(sv)) { | |
351 | case SVt_PVAV: | |
352 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
353 | RETURN; | |
354 | break; | |
355 | case SVt_PVHV: | |
356 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
357 | RETURN; | |
358 | break; | |
359 | case SVt_PVCV: | |
360 | if (CvROOT(sv) || CvXSUB(sv)) | |
361 | RETURN; | |
362 | break; | |
363 | default: | |
364 | if (SvGMAGICAL(sv)) | |
365 | mg_get(sv); | |
366 | if (SvOK(sv)) | |
367 | RETURN; | |
368 | } | |
369 | ||
370 | --SP; | |
371 | RETURNOP(cLOGOP->op_other); | |
372 | } | |
373 | ||
a0d0e21e LW |
374 | PP(pp_add) |
375 | { | |
39644a26 | 376 | dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 JH |
377 | useleft = USE_LEFT(TOPm1s); |
378 | #ifdef PERL_PRESERVE_IVUV | |
379 | /* We must see if we can perform the addition with integers if possible, | |
380 | as the integer code detects overflow while the NV code doesn't. | |
381 | If either argument hasn't had a numeric conversion yet attempt to get | |
382 | the IV. It's important to do this now, rather than just assuming that | |
383 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
384 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
385 | integer in case the second argument is IV=9223372036854775806 | |
386 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
387 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
388 | ||
389 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
390 | fp maths for integer values. |
391 | ||
a00b5bd3 | 392 | How to detect overflow? |
7dca457a NC |
393 | |
394 | C 99 section 6.2.6.1 says | |
395 | ||
396 | The range of nonnegative values of a signed integer type is a subrange | |
397 | of the corresponding unsigned integer type, and the representation of | |
398 | the same value in each type is the same. A computation involving | |
399 | unsigned operands can never overflow, because a result that cannot be | |
400 | represented by the resulting unsigned integer type is reduced modulo | |
401 | the number that is one greater than the largest value that can be | |
402 | represented by the resulting type. | |
403 | ||
404 | (the 9th paragraph) | |
405 | ||
406 | which I read as "unsigned ints wrap." | |
407 | ||
408 | signed integer overflow seems to be classed as "exception condition" | |
409 | ||
410 | If an exceptional condition occurs during the evaluation of an | |
411 | expression (that is, if the result is not mathematically defined or not | |
412 | in the range of representable values for its type), the behavior is | |
413 | undefined. | |
414 | ||
415 | (6.5, the 5th paragraph) | |
416 | ||
417 | I had assumed that on 2s complement machines signed arithmetic would | |
418 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
419 | everything perl builds on would be happy. After much wailing and | |
420 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
421 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
422 | unsigned code below is actually shorter than the old code. :-) | |
423 | */ | |
424 | ||
28e5dec8 JH |
425 | SvIV_please(TOPs); |
426 | if (SvIOK(TOPs)) { | |
427 | /* Unless the left argument is integer in range we are going to have to | |
428 | use NV maths. Hence only attempt to coerce the right argument if | |
429 | we know the left is integer. */ | |
9c5ffd7c JH |
430 | register UV auv = 0; |
431 | bool auvok = FALSE; | |
7dca457a NC |
432 | bool a_valid = 0; |
433 | ||
28e5dec8 | 434 | if (!useleft) { |
7dca457a NC |
435 | auv = 0; |
436 | a_valid = auvok = 1; | |
437 | /* left operand is undef, treat as zero. + 0 is identity, | |
438 | Could SETi or SETu right now, but space optimise by not adding | |
439 | lots of code to speed up what is probably a rarish case. */ | |
440 | } else { | |
441 | /* Left operand is defined, so is it IV? */ | |
442 | SvIV_please(TOPm1s); | |
443 | if (SvIOK(TOPm1s)) { | |
444 | if ((auvok = SvUOK(TOPm1s))) | |
445 | auv = SvUVX(TOPm1s); | |
446 | else { | |
447 | register IV aiv = SvIVX(TOPm1s); | |
448 | if (aiv >= 0) { | |
449 | auv = aiv; | |
450 | auvok = 1; /* Now acting as a sign flag. */ | |
451 | } else { /* 2s complement assumption for IV_MIN */ | |
452 | auv = (UV)-aiv; | |
453 | } | |
454 | } | |
455 | a_valid = 1; | |
28e5dec8 JH |
456 | } |
457 | } | |
7dca457a NC |
458 | if (a_valid) { |
459 | bool result_good = 0; | |
460 | UV result; | |
461 | register UV buv; | |
28e5dec8 | 462 | bool buvok = SvUOK(TOPs); |
a00b5bd3 | 463 | |
7dca457a NC |
464 | if (buvok) |
465 | buv = SvUVX(TOPs); | |
466 | else { | |
467 | register IV biv = SvIVX(TOPs); | |
468 | if (biv >= 0) { | |
469 | buv = biv; | |
470 | buvok = 1; | |
471 | } else | |
472 | buv = (UV)-biv; | |
473 | } | |
474 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 475 | else "IV" now, independent of how it came in. |
7dca457a NC |
476 | if a, b represents positive, A, B negative, a maps to -A etc |
477 | a + b => (a + b) | |
478 | A + b => -(a - b) | |
479 | a + B => (a - b) | |
480 | A + B => -(a + b) | |
481 | all UV maths. negate result if A negative. | |
482 | add if signs same, subtract if signs differ. */ | |
483 | ||
484 | if (auvok ^ buvok) { | |
485 | /* Signs differ. */ | |
486 | if (auv >= buv) { | |
487 | result = auv - buv; | |
488 | /* Must get smaller */ | |
489 | if (result <= auv) | |
490 | result_good = 1; | |
491 | } else { | |
492 | result = buv - auv; | |
493 | if (result <= buv) { | |
494 | /* result really should be -(auv-buv). as its negation | |
495 | of true value, need to swap our result flag */ | |
496 | auvok = !auvok; | |
497 | result_good = 1; | |
28e5dec8 JH |
498 | } |
499 | } | |
7dca457a NC |
500 | } else { |
501 | /* Signs same */ | |
502 | result = auv + buv; | |
503 | if (result >= auv) | |
504 | result_good = 1; | |
505 | } | |
506 | if (result_good) { | |
507 | SP--; | |
508 | if (auvok) | |
28e5dec8 | 509 | SETu( result ); |
7dca457a NC |
510 | else { |
511 | /* Negate result */ | |
512 | if (result <= (UV)IV_MIN) | |
513 | SETi( -(IV)result ); | |
514 | else { | |
515 | /* result valid, but out of range for IV. */ | |
516 | SETn( -(NV)result ); | |
28e5dec8 JH |
517 | } |
518 | } | |
7dca457a NC |
519 | RETURN; |
520 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
521 | } |
522 | } | |
523 | #endif | |
a0d0e21e | 524 | { |
28e5dec8 JH |
525 | dPOPnv; |
526 | if (!useleft) { | |
527 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
528 | SETn(value); | |
529 | RETURN; | |
530 | } | |
531 | SETn( value + TOPn ); | |
532 | RETURN; | |
a0d0e21e LW |
533 | } |
534 | } | |
535 | ||
536 | PP(pp_aelemfast) | |
537 | { | |
39644a26 | 538 | dSP; |
6a077020 DM |
539 | AV *av = PL_op->op_flags & OPf_SPECIAL ? |
540 | (AV*)PAD_SV(PL_op->op_targ) : GvAV(cGVOP_gv); | |
533c011a NIS |
541 | U32 lval = PL_op->op_flags & OPf_MOD; |
542 | SV** svp = av_fetch(av, PL_op->op_private, lval); | |
3280af22 | 543 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 544 | EXTEND(SP, 1); |
be6c24e0 GS |
545 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
546 | sv = sv_mortalcopy(sv); | |
547 | PUSHs(sv); | |
a0d0e21e LW |
548 | RETURN; |
549 | } | |
550 | ||
551 | PP(pp_join) | |
552 | { | |
39644a26 | 553 | dSP; dMARK; dTARGET; |
a0d0e21e LW |
554 | MARK++; |
555 | do_join(TARG, *MARK, MARK, SP); | |
556 | SP = MARK; | |
557 | SETs(TARG); | |
558 | RETURN; | |
559 | } | |
560 | ||
561 | PP(pp_pushre) | |
562 | { | |
39644a26 | 563 | dSP; |
44a8e56a | 564 | #ifdef DEBUGGING |
565 | /* | |
566 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
567 | * will be enough to hold an OP*. | |
568 | */ | |
569 | SV* sv = sv_newmortal(); | |
570 | sv_upgrade(sv, SVt_PVLV); | |
571 | LvTYPE(sv) = '/'; | |
533c011a | 572 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 573 | XPUSHs(sv); |
574 | #else | |
6b88bc9c | 575 | XPUSHs((SV*)PL_op); |
44a8e56a | 576 | #endif |
a0d0e21e LW |
577 | RETURN; |
578 | } | |
579 | ||
580 | /* Oversized hot code. */ | |
581 | ||
582 | PP(pp_print) | |
583 | { | |
39644a26 | 584 | dSP; dMARK; dORIGMARK; |
a0d0e21e LW |
585 | GV *gv; |
586 | IO *io; | |
760ac839 | 587 | register PerlIO *fp; |
236988e4 | 588 | MAGIC *mg; |
a0d0e21e | 589 | |
533c011a | 590 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e LW |
591 | gv = (GV*)*++MARK; |
592 | else | |
3280af22 | 593 | gv = PL_defoutgv; |
5b468f54 AMS |
594 | |
595 | if (gv && (io = GvIO(gv)) | |
596 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
597 | { | |
01bb7c6d | 598 | had_magic: |
68dc0745 | 599 | if (MARK == ORIGMARK) { |
1c846c1f | 600 | /* If using default handle then we need to make space to |
a60c0954 NIS |
601 | * pass object as 1st arg, so move other args up ... |
602 | */ | |
4352c267 | 603 | MEXTEND(SP, 1); |
68dc0745 | 604 | ++MARK; |
605 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
606 | ++SP; | |
607 | } | |
608 | PUSHMARK(MARK - 1); | |
5b468f54 | 609 | *MARK = SvTIED_obj((SV*)io, mg); |
68dc0745 | 610 | PUTBACK; |
236988e4 | 611 | ENTER; |
864dbfa3 | 612 | call_method("PRINT", G_SCALAR); |
236988e4 | 613 | LEAVE; |
614 | SPAGAIN; | |
68dc0745 | 615 | MARK = ORIGMARK + 1; |
616 | *MARK = *SP; | |
617 | SP = MARK; | |
236988e4 | 618 | RETURN; |
619 | } | |
a0d0e21e | 620 | if (!(io = GvIO(gv))) { |
5b468f54 AMS |
621 | if ((GvEGV(gv)) && (io = GvIO(GvEGV(gv))) |
622 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
01bb7c6d | 623 | goto had_magic; |
2dd78f96 JH |
624 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
625 | report_evil_fh(gv, io, PL_op->op_type); | |
93189314 | 626 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
627 | goto just_say_no; |
628 | } | |
629 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 630 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 NC |
631 | if (IoIFP(io)) |
632 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); | |
2dd78f96 | 633 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f | 634 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e | 635 | } |
93189314 | 636 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e LW |
637 | goto just_say_no; |
638 | } | |
639 | else { | |
640 | MARK++; | |
7889fe52 | 641 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e LW |
642 | while (MARK <= SP) { |
643 | if (!do_print(*MARK, fp)) | |
644 | break; | |
645 | MARK++; | |
646 | if (MARK <= SP) { | |
7889fe52 | 647 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e LW |
648 | MARK--; |
649 | break; | |
650 | } | |
651 | } | |
652 | } | |
653 | } | |
654 | else { | |
655 | while (MARK <= SP) { | |
656 | if (!do_print(*MARK, fp)) | |
657 | break; | |
658 | MARK++; | |
659 | } | |
660 | } | |
661 | if (MARK <= SP) | |
662 | goto just_say_no; | |
663 | else { | |
7889fe52 NIS |
664 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
665 | if (!do_print(PL_ors_sv, fp)) /* $\ */ | |
a0d0e21e LW |
666 | goto just_say_no; |
667 | ||
668 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 669 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
670 | goto just_say_no; |
671 | } | |
672 | } | |
673 | SP = ORIGMARK; | |
3280af22 | 674 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
675 | RETURN; |
676 | ||
677 | just_say_no: | |
678 | SP = ORIGMARK; | |
3280af22 | 679 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
680 | RETURN; |
681 | } | |
682 | ||
683 | PP(pp_rv2av) | |
684 | { | |
39644a26 | 685 | dSP; dTOPss; |
a0d0e21e LW |
686 | AV *av; |
687 | ||
688 | if (SvROK(sv)) { | |
689 | wasref: | |
f5284f61 IZ |
690 | tryAMAGICunDEREF(to_av); |
691 | ||
a0d0e21e LW |
692 | av = (AV*)SvRV(sv); |
693 | if (SvTYPE(av) != SVt_PVAV) | |
cea2e8a9 | 694 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a | 695 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 696 | SETs((SV*)av); |
a0d0e21e LW |
697 | RETURN; |
698 | } | |
78f9721b SM |
699 | else if (LVRET) { |
700 | if (GIMME == G_SCALAR) | |
701 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); | |
702 | SETs((SV*)av); | |
703 | RETURN; | |
704 | } | |
82d03984 RGS |
705 | else if (PL_op->op_flags & OPf_MOD |
706 | && PL_op->op_private & OPpLVAL_INTRO) | |
707 | Perl_croak(aTHX_ PL_no_localize_ref); | |
a0d0e21e LW |
708 | } |
709 | else { | |
710 | if (SvTYPE(sv) == SVt_PVAV) { | |
711 | av = (AV*)sv; | |
533c011a | 712 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 713 | SETs((SV*)av); |
a0d0e21e LW |
714 | RETURN; |
715 | } | |
78f9721b SM |
716 | else if (LVRET) { |
717 | if (GIMME == G_SCALAR) | |
718 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
719 | " scalar context"); | |
720 | SETs((SV*)av); | |
721 | RETURN; | |
722 | } | |
a0d0e21e LW |
723 | } |
724 | else { | |
67955e0c | 725 | GV *gv; |
1c846c1f | 726 | |
a0d0e21e | 727 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 728 | char *sym; |
c9d5ac95 | 729 | STRLEN len; |
748a9306 | 730 | |
a0d0e21e LW |
731 | if (SvGMAGICAL(sv)) { |
732 | mg_get(sv); | |
733 | if (SvROK(sv)) | |
734 | goto wasref; | |
735 | } | |
736 | if (!SvOK(sv)) { | |
533c011a NIS |
737 | if (PL_op->op_flags & OPf_REF || |
738 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 739 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 | 740 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 741 | report_uninit(sv); |
f5284f61 | 742 | if (GIMME == G_ARRAY) { |
c2444246 | 743 | (void)POPs; |
4633a7c4 | 744 | RETURN; |
f5284f61 IZ |
745 | } |
746 | RETSETUNDEF; | |
a0d0e21e | 747 | } |
c9d5ac95 | 748 | sym = SvPV(sv,len); |
35cd451c GS |
749 | if ((PL_op->op_flags & OPf_SPECIAL) && |
750 | !(PL_op->op_flags & OPf_MOD)) | |
751 | { | |
752 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV); | |
c9d5ac95 GS |
753 | if (!gv |
754 | && (!is_gv_magical(sym,len,0) | |
755 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV)))) | |
756 | { | |
35cd451c | 757 | RETSETUNDEF; |
c9d5ac95 | 758 | } |
35cd451c GS |
759 | } |
760 | else { | |
761 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 762 | DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); |
35cd451c GS |
763 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); |
764 | } | |
765 | } | |
766 | else { | |
67955e0c | 767 | gv = (GV*)sv; |
a0d0e21e | 768 | } |
67955e0c | 769 | av = GvAVn(gv); |
533c011a | 770 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 771 | av = save_ary(gv); |
533c011a | 772 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 773 | SETs((SV*)av); |
a0d0e21e LW |
774 | RETURN; |
775 | } | |
78f9721b SM |
776 | else if (LVRET) { |
777 | if (GIMME == G_SCALAR) | |
778 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
779 | " scalar context"); | |
780 | SETs((SV*)av); | |
781 | RETURN; | |
782 | } | |
a0d0e21e LW |
783 | } |
784 | } | |
785 | ||
786 | if (GIMME == G_ARRAY) { | |
787 | I32 maxarg = AvFILL(av) + 1; | |
c2444246 | 788 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f | 789 | EXTEND(SP, maxarg); |
93965878 | 790 | if (SvRMAGICAL(av)) { |
1c846c1f | 791 | U32 i; |
eb160463 | 792 | for (i=0; i < (U32)maxarg; i++) { |
93965878 | 793 | SV **svp = av_fetch(av, i, FALSE); |
547d1dd8 HS |
794 | /* See note in pp_helem, and bug id #27839 */ |
795 | SP[i+1] = svp | |
796 | ? SvGMAGICAL(*svp) ? sv_mortalcopy(*svp) : *svp | |
797 | : &PL_sv_undef; | |
93965878 | 798 | } |
1c846c1f | 799 | } |
93965878 NIS |
800 | else { |
801 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
802 | } | |
a0d0e21e LW |
803 | SP += maxarg; |
804 | } | |
c754c3d7 | 805 | else if (GIMME_V == G_SCALAR) { |
a0d0e21e LW |
806 | dTARGET; |
807 | I32 maxarg = AvFILL(av) + 1; | |
f5284f61 | 808 | SETi(maxarg); |
a0d0e21e LW |
809 | } |
810 | RETURN; | |
811 | } | |
812 | ||
813 | PP(pp_rv2hv) | |
814 | { | |
39644a26 | 815 | dSP; dTOPss; |
a0d0e21e | 816 | HV *hv; |
be85d344 | 817 | I32 gimme = GIMME_V; |
a0d0e21e LW |
818 | |
819 | if (SvROK(sv)) { | |
820 | wasref: | |
f5284f61 IZ |
821 | tryAMAGICunDEREF(to_hv); |
822 | ||
a0d0e21e | 823 | hv = (HV*)SvRV(sv); |
6d822dc4 | 824 | if (SvTYPE(hv) != SVt_PVHV) |
cea2e8a9 | 825 | DIE(aTHX_ "Not a HASH reference"); |
533c011a | 826 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
827 | SETs((SV*)hv); |
828 | RETURN; | |
829 | } | |
78f9721b | 830 | else if (LVRET) { |
be85d344 | 831 | if (gimme != G_ARRAY) |
78f9721b SM |
832 | Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); |
833 | SETs((SV*)hv); | |
834 | RETURN; | |
835 | } | |
82d03984 RGS |
836 | else if (PL_op->op_flags & OPf_MOD |
837 | && PL_op->op_private & OPpLVAL_INTRO) | |
838 | Perl_croak(aTHX_ PL_no_localize_ref); | |
a0d0e21e LW |
839 | } |
840 | else { | |
6d822dc4 | 841 | if (SvTYPE(sv) == SVt_PVHV) { |
a0d0e21e | 842 | hv = (HV*)sv; |
533c011a | 843 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
844 | SETs((SV*)hv); |
845 | RETURN; | |
846 | } | |
78f9721b | 847 | else if (LVRET) { |
be85d344 | 848 | if (gimme != G_ARRAY) |
78f9721b SM |
849 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
850 | " scalar context"); | |
851 | SETs((SV*)hv); | |
852 | RETURN; | |
853 | } | |
a0d0e21e LW |
854 | } |
855 | else { | |
67955e0c | 856 | GV *gv; |
1c846c1f | 857 | |
a0d0e21e | 858 | if (SvTYPE(sv) != SVt_PVGV) { |
748a9306 | 859 | char *sym; |
c9d5ac95 | 860 | STRLEN len; |
748a9306 | 861 | |
a0d0e21e LW |
862 | if (SvGMAGICAL(sv)) { |
863 | mg_get(sv); | |
864 | if (SvROK(sv)) | |
865 | goto wasref; | |
866 | } | |
867 | if (!SvOK(sv)) { | |
533c011a NIS |
868 | if (PL_op->op_flags & OPf_REF || |
869 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 870 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 | 871 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 872 | report_uninit(sv); |
be85d344 | 873 | if (gimme == G_ARRAY) { |
4633a7c4 LW |
874 | SP--; |
875 | RETURN; | |
876 | } | |
a0d0e21e LW |
877 | RETSETUNDEF; |
878 | } | |
c9d5ac95 | 879 | sym = SvPV(sv,len); |
35cd451c GS |
880 | if ((PL_op->op_flags & OPf_SPECIAL) && |
881 | !(PL_op->op_flags & OPf_MOD)) | |
882 | { | |
883 | gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV); | |
c9d5ac95 GS |
884 | if (!gv |
885 | && (!is_gv_magical(sym,len,0) | |
886 | || !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV)))) | |
887 | { | |
35cd451c | 888 | RETSETUNDEF; |
c9d5ac95 | 889 | } |
35cd451c GS |
890 | } |
891 | else { | |
892 | if (PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 893 | DIE(aTHX_ PL_no_symref, sym, "a HASH"); |
35cd451c GS |
894 | gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); |
895 | } | |
896 | } | |
897 | else { | |
67955e0c | 898 | gv = (GV*)sv; |
a0d0e21e | 899 | } |
67955e0c | 900 | hv = GvHVn(gv); |
533c011a | 901 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 902 | hv = save_hash(gv); |
533c011a | 903 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
904 | SETs((SV*)hv); |
905 | RETURN; | |
906 | } | |
78f9721b | 907 | else if (LVRET) { |
be85d344 | 908 | if (gimme != G_ARRAY) |
78f9721b SM |
909 | Perl_croak(aTHX_ "Can't return hash to lvalue" |
910 | " scalar context"); | |
911 | SETs((SV*)hv); | |
912 | RETURN; | |
913 | } | |
a0d0e21e LW |
914 | } |
915 | } | |
916 | ||
be85d344 | 917 | if (gimme == G_ARRAY) { /* array wanted */ |
3280af22 | 918 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 | 919 | return do_kv(); |
a0d0e21e | 920 | } |
be85d344 | 921 | else if (gimme == G_SCALAR) { |
a0d0e21e | 922 | dTARGET; |
243d6ab3 | 923 | TARG = Perl_hv_scalar(aTHX_ hv); |
a0d0e21e | 924 | SETTARG; |
a0d0e21e | 925 | } |
be85d344 | 926 | RETURN; |
a0d0e21e LW |
927 | } |
928 | ||
10c8fecd GS |
929 | STATIC void |
930 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
931 | { | |
932 | if (*relem) { | |
933 | SV *tmpstr; | |
6d822dc4 MS |
934 | HE *didstore; |
935 | ||
936 | if (ckWARN(WARN_MISC)) { | |
10c8fecd GS |
937 | if (relem == firstrelem && |
938 | SvROK(*relem) && | |
939 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
940 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
941 | { | |
9014280d | 942 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd GS |
943 | "Reference found where even-sized list expected"); |
944 | } | |
945 | else | |
9014280d | 946 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
10c8fecd GS |
947 | "Odd number of elements in hash assignment"); |
948 | } | |
6d822dc4 MS |
949 | |
950 | tmpstr = NEWSV(29,0); | |
951 | didstore = hv_store_ent(hash,*relem,tmpstr,0); | |
952 | if (SvMAGICAL(hash)) { | |
953 | if (SvSMAGICAL(tmpstr)) | |
954 | mg_set(tmpstr); | |
955 | if (!didstore) | |
956 | sv_2mortal(tmpstr); | |
957 | } | |
958 | TAINT_NOT; | |
10c8fecd GS |
959 | } |
960 | } | |
961 | ||
a0d0e21e LW |
962 | PP(pp_aassign) |
963 | { | |
39644a26 | 964 | dSP; |
3280af22 NIS |
965 | SV **lastlelem = PL_stack_sp; |
966 | SV **lastrelem = PL_stack_base + POPMARK; | |
967 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
968 | SV **firstlelem = lastrelem + 1; |
969 | ||
970 | register SV **relem; | |
971 | register SV **lelem; | |
972 | ||
973 | register SV *sv; | |
974 | register AV *ary; | |
975 | ||
54310121 | 976 | I32 gimme; |
a0d0e21e LW |
977 | HV *hash; |
978 | I32 i; | |
979 | int magic; | |
ca65944e | 980 | int duplicates = 0; |
5637b936 NC |
981 | SV **firsthashrelem = 0; /* "= 0" keeps gcc 2.95 quiet */ |
982 | ||
a0d0e21e | 983 | |
3280af22 | 984 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
ca65944e | 985 | gimme = GIMME_V; |
a0d0e21e LW |
986 | |
987 | /* If there's a common identifier on both sides we have to take | |
988 | * special care that assigning the identifier on the left doesn't | |
989 | * clobber a value on the right that's used later in the list. | |
990 | */ | |
10c8fecd | 991 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 | 992 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd GS |
993 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
994 | /*SUPPRESS 560*/ | |
155aba94 | 995 | if ((sv = *relem)) { |
a1f49e72 | 996 | TAINT_NOT; /* Each item is independent */ |
10c8fecd | 997 | *relem = sv_mortalcopy(sv); |
a1f49e72 | 998 | } |
10c8fecd | 999 | } |
a0d0e21e LW |
1000 | } |
1001 | ||
1002 | relem = firstrelem; | |
1003 | lelem = firstlelem; | |
1004 | ary = Null(AV*); | |
1005 | hash = Null(HV*); | |
10c8fecd | 1006 | |
a0d0e21e | 1007 | while (lelem <= lastlelem) { |
bbce6d69 | 1008 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
1009 | sv = *lelem++; |
1010 | switch (SvTYPE(sv)) { | |
1011 | case SVt_PVAV: | |
1012 | ary = (AV*)sv; | |
748a9306 | 1013 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e | 1014 | av_clear(ary); |
7e42bd57 | 1015 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1016 | i = 0; |
1017 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1018 | SV **didstore; |
a0d0e21e LW |
1019 | sv = NEWSV(28,0); |
1020 | assert(*relem); | |
1021 | sv_setsv(sv,*relem); | |
1022 | *(relem++) = sv; | |
5117ca91 GS |
1023 | didstore = av_store(ary,i++,sv); |
1024 | if (magic) { | |
fb73857a | 1025 | if (SvSMAGICAL(sv)) |
1026 | mg_set(sv); | |
5117ca91 | 1027 | if (!didstore) |
8127e0e3 | 1028 | sv_2mortal(sv); |
5117ca91 | 1029 | } |
bbce6d69 | 1030 | TAINT_NOT; |
a0d0e21e LW |
1031 | } |
1032 | break; | |
10c8fecd | 1033 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e LW |
1034 | SV *tmpstr; |
1035 | ||
1036 | hash = (HV*)sv; | |
748a9306 | 1037 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e | 1038 | hv_clear(hash); |
ca65944e | 1039 | firsthashrelem = relem; |
a0d0e21e LW |
1040 | |
1041 | while (relem < lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1042 | HE *didstore; |
4633a7c4 | 1043 | if (*relem) |
a0d0e21e | 1044 | sv = *(relem++); |
4633a7c4 | 1045 | else |
3280af22 | 1046 | sv = &PL_sv_no, relem++; |
a0d0e21e LW |
1047 | tmpstr = NEWSV(29,0); |
1048 | if (*relem) | |
1049 | sv_setsv(tmpstr,*relem); /* value */ | |
1050 | *(relem++) = tmpstr; | |
ca65944e RGS |
1051 | if (gimme != G_VOID && hv_exists_ent(hash, sv, 0)) |
1052 | /* key overwrites an existing entry */ | |
1053 | duplicates += 2; | |
5117ca91 GS |
1054 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1055 | if (magic) { | |
fb73857a | 1056 | if (SvSMAGICAL(tmpstr)) |
1057 | mg_set(tmpstr); | |
5117ca91 | 1058 | if (!didstore) |
8127e0e3 | 1059 | sv_2mortal(tmpstr); |
5117ca91 | 1060 | } |
bbce6d69 | 1061 | TAINT_NOT; |
8e07c86e | 1062 | } |
6a0deba8 | 1063 | if (relem == lastrelem) { |
10c8fecd | 1064 | do_oddball(hash, relem, firstrelem); |
6a0deba8 | 1065 | relem++; |
1930e939 | 1066 | } |
a0d0e21e LW |
1067 | } |
1068 | break; | |
1069 | default: | |
6fc92669 GS |
1070 | if (SvIMMORTAL(sv)) { |
1071 | if (relem <= lastrelem) | |
1072 | relem++; | |
1073 | break; | |
a0d0e21e LW |
1074 | } |
1075 | if (relem <= lastrelem) { | |
1076 | sv_setsv(sv, *relem); | |
1077 | *(relem++) = sv; | |
1078 | } | |
1079 | else | |
3280af22 | 1080 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e LW |
1081 | SvSETMAGIC(sv); |
1082 | break; | |
1083 | } | |
1084 | } | |
3280af22 NIS |
1085 | if (PL_delaymagic & ~DM_DELAY) { |
1086 | if (PL_delaymagic & DM_UID) { | |
a0d0e21e | 1087 | #ifdef HAS_SETRESUID |
fb934a90 RD |
1088 | (void)setresuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1089 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1, | |
1090 | (Uid_t)-1); | |
56febc5e AD |
1091 | #else |
1092 | # ifdef HAS_SETREUID | |
fb934a90 RD |
1093 | (void)setreuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1094 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1); | |
56febc5e AD |
1095 | # else |
1096 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
1097 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1098 | (void)setruid(PL_uid); | |
1099 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 1100 | } |
56febc5e AD |
1101 | # endif /* HAS_SETRUID */ |
1102 | # ifdef HAS_SETEUID | |
b28d0864 | 1103 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
fb934a90 | 1104 | (void)seteuid(PL_euid); |
b28d0864 | 1105 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e | 1106 | } |
56febc5e | 1107 | # endif /* HAS_SETEUID */ |
b28d0864 NIS |
1108 | if (PL_delaymagic & DM_UID) { |
1109 | if (PL_uid != PL_euid) | |
cea2e8a9 | 1110 | DIE(aTHX_ "No setreuid available"); |
b28d0864 | 1111 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e | 1112 | } |
56febc5e AD |
1113 | # endif /* HAS_SETREUID */ |
1114 | #endif /* HAS_SETRESUID */ | |
d8eceb89 JH |
1115 | PL_uid = PerlProc_getuid(); |
1116 | PL_euid = PerlProc_geteuid(); | |
a0d0e21e | 1117 | } |
3280af22 | 1118 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1119 | #ifdef HAS_SETRESGID |
fb934a90 RD |
1120 | (void)setresgid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1121 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1, | |
1122 | (Gid_t)-1); | |
56febc5e AD |
1123 | #else |
1124 | # ifdef HAS_SETREGID | |
fb934a90 RD |
1125 | (void)setregid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1126 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1); | |
56febc5e AD |
1127 | # else |
1128 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
1129 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1130 | (void)setrgid(PL_gid); | |
1131 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 1132 | } |
56febc5e AD |
1133 | # endif /* HAS_SETRGID */ |
1134 | # ifdef HAS_SETEGID | |
b28d0864 | 1135 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
fb934a90 | 1136 | (void)setegid(PL_egid); |
b28d0864 | 1137 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e | 1138 | } |
56febc5e | 1139 | # endif /* HAS_SETEGID */ |
b28d0864 NIS |
1140 | if (PL_delaymagic & DM_GID) { |
1141 | if (PL_gid != PL_egid) | |
cea2e8a9 | 1142 | DIE(aTHX_ "No setregid available"); |
b28d0864 | 1143 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e | 1144 | } |
56febc5e AD |
1145 | # endif /* HAS_SETREGID */ |
1146 | #endif /* HAS_SETRESGID */ | |
d8eceb89 JH |
1147 | PL_gid = PerlProc_getgid(); |
1148 | PL_egid = PerlProc_getegid(); | |
a0d0e21e | 1149 | } |
3280af22 | 1150 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e | 1151 | } |
3280af22 | 1152 | PL_delaymagic = 0; |
54310121 | 1153 | |
54310121 | 1154 | if (gimme == G_VOID) |
1155 | SP = firstrelem - 1; | |
1156 | else if (gimme == G_SCALAR) { | |
1157 | dTARGET; | |
1158 | SP = firstrelem; | |
ca65944e | 1159 | SETi(lastrelem - firstrelem + 1 - duplicates); |
54310121 | 1160 | } |
1161 | else { | |
ca65944e | 1162 | if (ary) |
a0d0e21e | 1163 | SP = lastrelem; |
ca65944e RGS |
1164 | else if (hash) { |
1165 | if (duplicates) { | |
1166 | /* Removes from the stack the entries which ended up as | |
1167 | * duplicated keys in the hash (fix for [perl #24380]) */ | |
1168 | Move(firsthashrelem + duplicates, | |
1169 | firsthashrelem, duplicates, SV**); | |
1170 | lastrelem -= duplicates; | |
1171 | } | |
1172 | SP = lastrelem; | |
1173 | } | |
a0d0e21e LW |
1174 | else |
1175 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 1176 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 1177 | while (relem <= SP) |
3280af22 | 1178 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 1179 | } |
54310121 | 1180 | RETURN; |
a0d0e21e LW |
1181 | } |
1182 | ||
8782bef2 GB |
1183 | PP(pp_qr) |
1184 | { | |
39644a26 | 1185 | dSP; |
8782bef2 GB |
1186 | register PMOP *pm = cPMOP; |
1187 | SV *rv = sv_newmortal(); | |
57668c4d | 1188 | SV *sv = newSVrv(rv, "Regexp"); |
e08e52cf AMS |
1189 | if (pm->op_pmdynflags & PMdf_TAINTED) |
1190 | SvTAINTED_on(rv); | |
aaa362c4 | 1191 | sv_magic(sv,(SV*)ReREFCNT_inc(PM_GETRE(pm)), PERL_MAGIC_qr,0,0); |
8782bef2 GB |
1192 | RETURNX(PUSHs(rv)); |
1193 | } | |
1194 | ||
a0d0e21e LW |
1195 | PP(pp_match) |
1196 | { | |
39644a26 | 1197 | dSP; dTARG; |
a0d0e21e | 1198 | register PMOP *pm = cPMOP; |
d65afb4b | 1199 | PMOP *dynpm = pm; |
a0d0e21e LW |
1200 | register char *t; |
1201 | register char *s; | |
1202 | char *strend; | |
1203 | I32 global; | |
f722798b IZ |
1204 | I32 r_flags = REXEC_CHECKED; |
1205 | char *truebase; /* Start of string */ | |
aaa362c4 | 1206 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1207 | bool rxtainted; |
a0d0e21e LW |
1208 | I32 gimme = GIMME; |
1209 | STRLEN len; | |
748a9306 | 1210 | I32 minmatch = 0; |
3280af22 | 1211 | I32 oldsave = PL_savestack_ix; |
f86702cc | 1212 | I32 update_minmatch = 1; |
e60df1fa | 1213 | I32 had_zerolen = 0; |
a0d0e21e | 1214 | |
533c011a | 1215 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1216 | TARG = POPs; |
59f00321 RGS |
1217 | else if (PL_op->op_private & OPpTARGET_MY) |
1218 | GETTARGET; | |
a0d0e21e | 1219 | else { |
54b9620d | 1220 | TARG = DEFSV; |
a0d0e21e LW |
1221 | EXTEND(SP,1); |
1222 | } | |
d9f424b2 | 1223 | |
c277df42 | 1224 | PUTBACK; /* EVAL blocks need stack_sp. */ |
a0d0e21e LW |
1225 | s = SvPV(TARG, len); |
1226 | strend = s + len; | |
1227 | if (!s) | |
2269b42e | 1228 | DIE(aTHX_ "panic: pp_match"); |
b3eb6a9b | 1229 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 | 1230 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 1231 | TAINT_NOT; |
a0d0e21e | 1232 | |
a30b2f1f | 1233 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 1234 | |
d65afb4b | 1235 | /* PMdf_USED is set after a ?? matches once */ |
48c036b1 | 1236 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 | 1237 | failure: |
a0d0e21e LW |
1238 | if (gimme == G_ARRAY) |
1239 | RETURN; | |
1240 | RETPUSHNO; | |
1241 | } | |
1242 | ||
d65afb4b | 1243 | /* empty pattern special-cased to use last successful pattern if possible */ |
3280af22 NIS |
1244 | if (!rx->prelen && PL_curpm) { |
1245 | pm = PL_curpm; | |
aaa362c4 | 1246 | rx = PM_GETRE(pm); |
a0d0e21e | 1247 | } |
d65afb4b | 1248 | |
eb160463 | 1249 | if (rx->minlen > (I32)len) |
d65afb4b | 1250 | goto failure; |
c277df42 | 1251 | |
a0d0e21e | 1252 | truebase = t = s; |
ad94a511 IZ |
1253 | |
1254 | /* XXXX What part of this is needed with true \G-support? */ | |
d65afb4b | 1255 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
cf93c79d | 1256 | rx->startp[0] = -1; |
a0d0e21e | 1257 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 | 1258 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 | 1259 | if (mg && mg->mg_len >= 0) { |
b7a35066 | 1260 | if (!(rx->reganch & ROPT_GPOS_SEEN)) |
1c846c1f | 1261 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e HS |
1262 | else if (rx->reganch & ROPT_ANCH_GPOS) { |
1263 | r_flags |= REXEC_IGNOREPOS; | |
1c846c1f | 1264 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e | 1265 | } |
748a9306 | 1266 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc | 1267 | update_minmatch = 0; |
748a9306 | 1268 | } |
a0d0e21e LW |
1269 | } |
1270 | } | |
14977893 JH |
1271 | if ((!global && rx->nparens) |
1272 | || SvTEMP(TARG) || PL_sawampersand) | |
1273 | r_flags |= REXEC_COPY_STR; | |
1c846c1f | 1274 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
1275 | r_flags |= REXEC_SCREAM; |
1276 | ||
e8f49695 | 1277 | if ((int)(pm->op_pmflags & PMf_MULTILINE) != PL_multiline) { |
3280af22 NIS |
1278 | SAVEINT(PL_multiline); |
1279 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
1280 | } |
1281 | ||
1282 | play_it_again: | |
cf93c79d IZ |
1283 | if (global && rx->startp[0] != -1) { |
1284 | t = s = rx->endp[0] + truebase; | |
d9f97599 | 1285 | if ((s + rx->minlen) > strend) |
a0d0e21e | 1286 | goto nope; |
f86702cc | 1287 | if (update_minmatch++) |
e60df1fa | 1288 | minmatch = had_zerolen; |
a0d0e21e | 1289 | } |
60aeb6fd NIS |
1290 | if (rx->reganch & RE_USE_INTUIT && |
1291 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { | |
ee0b7718 | 1292 | PL_bostr = truebase; |
f722798b IZ |
1293 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
1294 | ||
1295 | if (!s) | |
1296 | goto nope; | |
1297 | if ( (rx->reganch & ROPT_CHECK_ALL) | |
14977893 | 1298 | && !PL_sawampersand |
f722798b IZ |
1299 | && ((rx->reganch & ROPT_NOSCAN) |
1300 | || !((rx->reganch & RE_INTUIT_TAIL) | |
05b4157f GS |
1301 | && (r_flags & REXEC_SCREAM))) |
1302 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
f722798b | 1303 | goto yup; |
a0d0e21e | 1304 | } |
cea2e8a9 | 1305 | if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 | 1306 | { |
3280af22 | 1307 | PL_curpm = pm; |
d65afb4b HS |
1308 | if (dynpm->op_pmflags & PMf_ONCE) |
1309 | dynpm->op_pmdynflags |= PMdf_USED; | |
a0d0e21e LW |
1310 | goto gotcha; |
1311 | } | |
1312 | else | |
1313 | goto ret_no; | |
1314 | /*NOTREACHED*/ | |
1315 | ||
1316 | gotcha: | |
72311751 GS |
1317 | if (rxtainted) |
1318 | RX_MATCH_TAINTED_on(rx); | |
1319 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1320 | if (gimme == G_ARRAY) { |
ffc61ed2 | 1321 | I32 nparens, i, len; |
a0d0e21e | 1322 | |
ffc61ed2 JH |
1323 | nparens = rx->nparens; |
1324 | if (global && !nparens) | |
a0d0e21e LW |
1325 | i = 1; |
1326 | else | |
1327 | i = 0; | |
c277df42 | 1328 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1329 | EXTEND(SP, nparens + i); |
1330 | EXTEND_MORTAL(nparens + i); | |
1331 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e LW |
1332 | PUSHs(sv_newmortal()); |
1333 | /*SUPPRESS 560*/ | |
cf93c79d IZ |
1334 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
1335 | len = rx->endp[i] - rx->startp[i]; | |
289555fe | 1336 | s = rx->startp[i] + truebase; |
290deeac A |
1337 | if (rx->endp[i] < 0 || rx->startp[i] < 0 || |
1338 | len < 0 || len > strend - s) | |
1339 | DIE(aTHX_ "panic: pp_match start/end pointers"); | |
a0d0e21e | 1340 | sv_setpvn(*SP, s, len); |
cce850e4 | 1341 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1342 | SvUTF8_on(*SP); |
a0d0e21e LW |
1343 | } |
1344 | } | |
1345 | if (global) { | |
d65afb4b | 1346 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
0af80b60 HS |
1347 | MAGIC* mg = 0; |
1348 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
1349 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1350 | if (!mg) { | |
1351 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); | |
1352 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1353 | } | |
1354 | if (rx->startp[0] != -1) { | |
1355 | mg->mg_len = rx->endp[0]; | |
1356 | if (rx->startp[0] == rx->endp[0]) | |
1357 | mg->mg_flags |= MGf_MINMATCH; | |
1358 | else | |
1359 | mg->mg_flags &= ~MGf_MINMATCH; | |
1360 | } | |
1361 | } | |
cf93c79d IZ |
1362 | had_zerolen = (rx->startp[0] != -1 |
1363 | && rx->startp[0] == rx->endp[0]); | |
c277df42 | 1364 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1365 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1366 | goto play_it_again; |
1367 | } | |
ffc61ed2 | 1368 | else if (!nparens) |
bde848c5 | 1369 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1370 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1371 | RETURN; |
1372 | } | |
1373 | else { | |
1374 | if (global) { | |
1375 | MAGIC* mg = 0; | |
1376 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
14befaf4 | 1377 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1378 | if (!mg) { |
14befaf4 DM |
1379 | sv_magic(TARG, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1380 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
a0d0e21e | 1381 | } |
cf93c79d IZ |
1382 | if (rx->startp[0] != -1) { |
1383 | mg->mg_len = rx->endp[0]; | |
d9f97599 | 1384 | if (rx->startp[0] == rx->endp[0]) |
748a9306 LW |
1385 | mg->mg_flags |= MGf_MINMATCH; |
1386 | else | |
1387 | mg->mg_flags &= ~MGf_MINMATCH; | |
1388 | } | |
a0d0e21e | 1389 | } |
4633a7c4 | 1390 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1391 | RETPUSHYES; |
1392 | } | |
1393 | ||
f722798b | 1394 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1395 | if (rxtainted) |
1396 | RX_MATCH_TAINTED_on(rx); | |
1397 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1398 | PL_curpm = pm; |
d65afb4b HS |
1399 | if (dynpm->op_pmflags & PMf_ONCE) |
1400 | dynpm->op_pmdynflags |= PMdf_USED; | |
cf93c79d IZ |
1401 | if (RX_MATCH_COPIED(rx)) |
1402 | Safefree(rx->subbeg); | |
1403 | RX_MATCH_COPIED_off(rx); | |
1404 | rx->subbeg = Nullch; | |
a0d0e21e | 1405 | if (global) { |
d9f97599 | 1406 | rx->subbeg = truebase; |
cf93c79d | 1407 | rx->startp[0] = s - truebase; |
a30b2f1f | 1408 | if (RX_MATCH_UTF8(rx)) { |
60aeb6fd NIS |
1409 | char *t = (char*)utf8_hop((U8*)s, rx->minlen); |
1410 | rx->endp[0] = t - truebase; | |
1411 | } | |
1412 | else { | |
1413 | rx->endp[0] = s - truebase + rx->minlen; | |
1414 | } | |
cf93c79d | 1415 | rx->sublen = strend - truebase; |
a0d0e21e | 1416 | goto gotcha; |
1c846c1f | 1417 | } |
14977893 JH |
1418 | if (PL_sawampersand) { |
1419 | I32 off; | |
ed252734 NC |
1420 | #ifdef PERL_COPY_ON_WRITE |
1421 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { | |
1422 | if (DEBUG_C_TEST) { | |
1423 | PerlIO_printf(Perl_debug_log, | |
1424 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", | |
1425 | (int) SvTYPE(TARG), truebase, t, | |
1426 | (int)(t-truebase)); | |
1427 | } | |
1428 | rx->saved_copy = sv_setsv_cow(rx->saved_copy, TARG); | |
1429 | rx->subbeg = SvPVX(rx->saved_copy) + (t - truebase); | |
1430 | assert (SvPOKp(rx->saved_copy)); | |
1431 | } else | |
1432 | #endif | |
1433 | { | |
14977893 | 1434 | |
ed252734 NC |
1435 | rx->subbeg = savepvn(t, strend - t); |
1436 | #ifdef PERL_COPY_ON_WRITE | |
1437 | rx->saved_copy = Nullsv; | |
1438 | #endif | |
1439 | } | |
14977893 JH |
1440 | rx->sublen = strend - t; |
1441 | RX_MATCH_COPIED_on(rx); | |
1442 | off = rx->startp[0] = s - t; | |
1443 | rx->endp[0] = off + rx->minlen; | |
1444 | } | |
1445 | else { /* startp/endp are used by @- @+. */ | |
1446 | rx->startp[0] = s - truebase; | |
1447 | rx->endp[0] = s - truebase + rx->minlen; | |
1448 | } | |
2d862feb | 1449 | rx->nparens = rx->lastparen = rx->lastcloseparen = 0; /* used by @-, @+, and $^N */ |
4633a7c4 | 1450 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1451 | RETPUSHYES; |
1452 | ||
1453 | nope: | |
a0d0e21e | 1454 | ret_no: |
d65afb4b | 1455 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e | 1456 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
14befaf4 | 1457 | MAGIC* mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1458 | if (mg) |
565764a8 | 1459 | mg->mg_len = -1; |
a0d0e21e LW |
1460 | } |
1461 | } | |
4633a7c4 | 1462 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1463 | if (gimme == G_ARRAY) |
1464 | RETURN; | |
1465 | RETPUSHNO; | |
1466 | } | |
1467 | ||
1468 | OP * | |
864dbfa3 | 1469 | Perl_do_readline(pTHX) |
a0d0e21e LW |
1470 | { |
1471 | dSP; dTARGETSTACKED; | |
1472 | register SV *sv; | |
1473 | STRLEN tmplen = 0; | |
1474 | STRLEN offset; | |
760ac839 | 1475 | PerlIO *fp; |
3280af22 | 1476 | register IO *io = GvIO(PL_last_in_gv); |
533c011a | 1477 | register I32 type = PL_op->op_type; |
54310121 | 1478 | I32 gimme = GIMME_V; |
e79b0511 | 1479 | MAGIC *mg; |
a0d0e21e | 1480 | |
5b468f54 | 1481 | if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { |
e79b0511 | 1482 | PUSHMARK(SP); |
5b468f54 | 1483 | XPUSHs(SvTIED_obj((SV*)io, mg)); |
e79b0511 | 1484 | PUTBACK; |
1485 | ENTER; | |
864dbfa3 | 1486 | call_method("READLINE", gimme); |
e79b0511 | 1487 | LEAVE; |
1488 | SPAGAIN; | |
0b7c7b4f HS |
1489 | if (gimme == G_SCALAR) { |
1490 | SV* result = POPs; | |
1491 | SvSetSV_nosteal(TARG, result); | |
1492 | PUSHTARG; | |
1493 | } | |
e79b0511 | 1494 | RETURN; |
1495 | } | |
a0d0e21e LW |
1496 | fp = Nullfp; |
1497 | if (io) { | |
1498 | fp = IoIFP(io); | |
1499 | if (!fp) { | |
1500 | if (IoFLAGS(io) & IOf_ARGV) { | |
1501 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1502 | IoLINES(io) = 0; |
3280af22 | 1503 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1504 | IoFLAGS(io) &= ~IOf_START; |
9d116dd7 | 1505 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); |
3280af22 NIS |
1506 | sv_setpvn(GvSV(PL_last_in_gv), "-", 1); |
1507 | SvSETMAGIC(GvSV(PL_last_in_gv)); | |
a2008d6d GS |
1508 | fp = IoIFP(io); |
1509 | goto have_fp; | |
a0d0e21e LW |
1510 | } |
1511 | } | |
3280af22 | 1512 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1513 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1514 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1515 | } |
1516 | } | |
0d44d22b NC |
1517 | else if (type == OP_GLOB) |
1518 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1519 | } |
1520 | else if (type == OP_GLOB) | |
1521 | SP--; | |
a00b5bd3 | 1522 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 | 1523 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 | 1524 | } |
a0d0e21e LW |
1525 | } |
1526 | if (!fp) { | |
790090df HS |
1527 | if (ckWARN2(WARN_GLOB, WARN_CLOSED) |
1528 | && (!io || !(IoFLAGS(io) & IOf_START))) { | |
3f4520fe | 1529 | if (type == OP_GLOB) |
9014280d | 1530 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a GS |
1531 | "glob failed (can't start child: %s)", |
1532 | Strerror(errno)); | |
69282e91 | 1533 | else |
bc37a18f | 1534 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe | 1535 | } |
54310121 | 1536 | if (gimme == G_SCALAR) { |
79628082 | 1537 | /* undef TARG, and push that undefined value */ |
ba92458f AE |
1538 | if (type != OP_RCATLINE) { |
1539 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
929a4907 | 1540 | (void)SvOK_off(TARG); |
ba92458f | 1541 | } |
a0d0e21e LW |
1542 | PUSHTARG; |
1543 | } | |
1544 | RETURN; | |
1545 | } | |
a2008d6d | 1546 | have_fp: |
54310121 | 1547 | if (gimme == G_SCALAR) { |
a0d0e21e | 1548 | sv = TARG; |
9607fc9c | 1549 | if (SvROK(sv)) |
1550 | sv_unref(sv); | |
a0d0e21e LW |
1551 | (void)SvUPGRADE(sv, SVt_PV); |
1552 | tmplen = SvLEN(sv); /* remember if already alloced */ | |
bc44a8a2 | 1553 | if (!tmplen && !SvREADONLY(sv)) |
a0d0e21e | 1554 | Sv_Grow(sv, 80); /* try short-buffering it */ |
2b5e58c4 AMS |
1555 | offset = 0; |
1556 | if (type == OP_RCATLINE && SvOK(sv)) { | |
1557 | if (!SvPOK(sv)) { | |
1558 | STRLEN n_a; | |
1559 | (void)SvPV_force(sv, n_a); | |
1560 | } | |
a0d0e21e | 1561 | offset = SvCUR(sv); |
2b5e58c4 | 1562 | } |
a0d0e21e | 1563 | } |
54310121 | 1564 | else { |
1565 | sv = sv_2mortal(NEWSV(57, 80)); | |
1566 | offset = 0; | |
1567 | } | |
fbad3eb5 | 1568 | |
3887d568 AP |
1569 | /* This should not be marked tainted if the fp is marked clean */ |
1570 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1571 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1572 | TAINT; \ | |
1573 | SvTAINTED_on(sv); \ | |
1574 | } | |
1575 | ||
684bef36 | 1576 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1577 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1578 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1579 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1580 | |
a0d0e21e | 1581 | for (;;) { |
09e8efcc | 1582 | PUTBACK; |
fbad3eb5 | 1583 | if (!sv_gets(sv, fp, offset) |
2d726892 TF |
1584 | && (type == OP_GLOB |
1585 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
1586 | || PerlIO_error(fp))) | |
fbad3eb5 | 1587 | { |
760ac839 | 1588 | PerlIO_clearerr(fp); |
a0d0e21e | 1589 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1590 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1591 | if (fp) |
1592 | continue; | |
3280af22 | 1593 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1594 | } |
1595 | else if (type == OP_GLOB) { | |
e476b1b5 | 1596 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
9014280d | 1597 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
4eb79ab5 | 1598 | "glob failed (child exited with status %d%s)", |
894356b3 | 1599 | (int)(STATUS_CURRENT >> 8), |
cf494569 | 1600 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 | 1601 | } |
a0d0e21e | 1602 | } |
54310121 | 1603 | if (gimme == G_SCALAR) { |
ba92458f AE |
1604 | if (type != OP_RCATLINE) { |
1605 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
929a4907 | 1606 | (void)SvOK_off(TARG); |
ba92458f | 1607 | } |
09e8efcc | 1608 | SPAGAIN; |
a0d0e21e LW |
1609 | PUSHTARG; |
1610 | } | |
3887d568 | 1611 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1612 | RETURN; |
1613 | } | |
3887d568 | 1614 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1615 | IoLINES(io)++; |
b9fee9ba | 1616 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1617 | SvSETMAGIC(sv); |
09e8efcc | 1618 | SPAGAIN; |
a0d0e21e | 1619 | XPUSHs(sv); |
a0d0e21e LW |
1620 | if (type == OP_GLOB) { |
1621 | char *tmps; | |
1622 | ||
3280af22 | 1623 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
c07a80fd | 1624 | tmps = SvEND(sv) - 1; |
3280af22 | 1625 | if (*tmps == *SvPVX(PL_rs)) { |
c07a80fd | 1626 | *tmps = '\0'; |
1627 | SvCUR(sv)--; | |
1628 | } | |
1629 | } | |
a0d0e21e LW |
1630 | for (tmps = SvPVX(sv); *tmps; tmps++) |
1631 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && | |
1632 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) | |
1633 | break; | |
43384a1a | 1634 | if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1635 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1636 | continue; | |
1637 | } | |
2d79bf7f JH |
1638 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
1639 | U8 *s = (U8*)SvPVX(sv) + offset; | |
1640 | STRLEN len = SvCUR(sv) - offset; | |
1641 | U8 *f; | |
1642 | ||
1643 | if (ckWARN(WARN_UTF8) && | |
1644 | !Perl_is_utf8_string_loc(aTHX_ s, len, &f)) | |
1645 | /* Emulate :encoding(utf8) warning in the same case. */ | |
1646 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
1647 | "utf8 \"\\x%02X\" does not map to Unicode", | |
1648 | f < (U8*)SvEND(sv) ? *f : 0); | |
a0d0e21e | 1649 | } |
54310121 | 1650 | if (gimme == G_ARRAY) { |
a0d0e21e LW |
1651 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1652 | SvLEN_set(sv, SvCUR(sv)+1); | |
1653 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1654 | } | |
1655 | sv = sv_2mortal(NEWSV(58, 80)); | |
1656 | continue; | |
1657 | } | |
54310121 | 1658 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e LW |
1659 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
1660 | if (SvCUR(sv) < 60) | |
1661 | SvLEN_set(sv, 80); | |
1662 | else | |
1663 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ | |
1664 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1665 | } | |
1666 | RETURN; | |
1667 | } | |
1668 | } | |
1669 | ||
1670 | PP(pp_enter) | |
1671 | { | |
39644a26 | 1672 | dSP; |
c09156bb | 1673 | register PERL_CONTEXT *cx; |
533c011a | 1674 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e | 1675 | |
54310121 | 1676 | if (gimme == -1) { |
1677 | if (cxstack_ix >= 0) | |
1678 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1679 | else | |
1680 | gimme = G_SCALAR; | |
1681 | } | |
a0d0e21e LW |
1682 | |
1683 | ENTER; | |
1684 | ||
1685 | SAVETMPS; | |
924508f0 | 1686 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
1687 | |
1688 | RETURN; | |
1689 | } | |
1690 | ||
1691 | PP(pp_helem) | |
1692 | { | |
39644a26 | 1693 | dSP; |
760ac839 | 1694 | HE* he; |
ae77835f | 1695 | SV **svp; |
a0d0e21e | 1696 | SV *keysv = POPs; |
a0d0e21e | 1697 | HV *hv = (HV*)POPs; |
78f9721b | 1698 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a | 1699 | U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
be6c24e0 | 1700 | SV *sv; |
765f542d NC |
1701 | #ifdef PERL_COPY_ON_WRITE |
1702 | U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvUVX(keysv) : 0; | |
1703 | #else | |
1c846c1f | 1704 | U32 hash = (SvFAKE(keysv) && SvREADONLY(keysv)) ? SvUVX(keysv) : 0; |
765f542d | 1705 | #endif |
9c5ffd7c | 1706 | I32 preeminent = 0; |
a0d0e21e | 1707 | |
ae77835f | 1708 | if (SvTYPE(hv) == SVt_PVHV) { |
8d1f198f DM |
1709 | if (PL_op->op_private & OPpLVAL_INTRO) { |
1710 | MAGIC *mg; | |
1711 | HV *stash; | |
1712 | /* does the element we're localizing already exist? */ | |
c39e6ab0 | 1713 | preeminent = |
8d1f198f DM |
1714 | /* can we determine whether it exists? */ |
1715 | ( !SvRMAGICAL(hv) | |
1716 | || mg_find((SV*)hv, PERL_MAGIC_env) | |
1717 | || ( (mg = mg_find((SV*)hv, PERL_MAGIC_tied)) | |
1718 | /* Try to preserve the existenceness of a tied hash | |
1719 | * element by using EXISTS and DELETE if possible. | |
1720 | * Fallback to FETCH and STORE otherwise */ | |
1721 | && (stash = SvSTASH(SvRV(SvTIED_obj((SV*)hv, mg)))) | |
1722 | && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) | |
1723 | && gv_fetchmethod_autoload(stash, "DELETE", TRUE) | |
1724 | ) | |
1725 | ) ? hv_exists_ent(hv, keysv, 0) : 1; | |
c39e6ab0 | 1726 | |
8d1f198f | 1727 | } |
1c846c1f | 1728 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
97fcbf96 | 1729 | svp = he ? &HeVAL(he) : 0; |
ae77835f | 1730 | } |
c750a3ec | 1731 | else { |
a0d0e21e | 1732 | RETPUSHUNDEF; |
c750a3ec | 1733 | } |
a0d0e21e | 1734 | if (lval) { |
3280af22 | 1735 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 1736 | SV* lv; |
1737 | SV* key2; | |
2d8e6c8d GS |
1738 | if (!defer) { |
1739 | STRLEN n_a; | |
cea2e8a9 | 1740 | DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); |
2d8e6c8d | 1741 | } |
68dc0745 | 1742 | lv = sv_newmortal(); |
1743 | sv_upgrade(lv, SVt_PVLV); | |
1744 | LvTYPE(lv) = 'y'; | |
14befaf4 | 1745 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 | 1746 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
1747 | LvTARG(lv) = SvREFCNT_inc(hv); | |
1748 | LvTARGLEN(lv) = 1; | |
1749 | PUSHs(lv); | |
1750 | RETURN; | |
1751 | } | |
533c011a | 1752 | if (PL_op->op_private & OPpLVAL_INTRO) { |
ae77835f | 1753 | if (HvNAME(hv) && isGV(*svp)) |
533c011a | 1754 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc SC |
1755 | else { |
1756 | if (!preeminent) { | |
1757 | STRLEN keylen; | |
1758 | char *key = SvPV(keysv, keylen); | |
57813020 | 1759 | SAVEDELETE(hv, savepvn(key,keylen), keylen); |
bfc4de9f | 1760 | } else |
1f5346dc SC |
1761 | save_helem(hv, keysv, svp); |
1762 | } | |
5f05dabc | 1763 | } |
533c011a NIS |
1764 | else if (PL_op->op_private & OPpDEREF) |
1765 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 1766 | } |
3280af22 | 1767 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
1768 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1769 | * Pushing the magical RHS on to the stack is useless, since | |
1770 | * that magic is soon destined to be misled by the local(), | |
1771 | * and thus the later pp_sassign() will fail to mg_get() the | |
1772 | * old value. This should also cure problems with delayed | |
1773 | * mg_get()s. GSAR 98-07-03 */ | |
1774 | if (!lval && SvGMAGICAL(sv)) | |
1775 | sv = sv_mortalcopy(sv); | |
1776 | PUSHs(sv); | |
a0d0e21e LW |
1777 | RETURN; |
1778 | } | |
1779 | ||
1780 | PP(pp_leave) | |
1781 | { | |
39644a26 | 1782 | dSP; |
c09156bb | 1783 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
1784 | register SV **mark; |
1785 | SV **newsp; | |
1786 | PMOP *newpm; | |
1787 | I32 gimme; | |
1788 | ||
533c011a | 1789 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1790 | cx = &cxstack[cxstack_ix]; |
3280af22 | 1791 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e LW |
1792 | } |
1793 | ||
1794 | POPBLOCK(cx,newpm); | |
1795 | ||
533c011a | 1796 | gimme = OP_GIMME(PL_op, -1); |
54310121 | 1797 | if (gimme == -1) { |
1798 | if (cxstack_ix >= 0) | |
1799 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1800 | else | |
1801 | gimme = G_SCALAR; | |
1802 | } | |
a0d0e21e | 1803 | |
a1f49e72 | 1804 | TAINT_NOT; |
54310121 | 1805 | if (gimme == G_VOID) |
1806 | SP = newsp; | |
1807 | else if (gimme == G_SCALAR) { | |
1808 | MARK = newsp + 1; | |
09256e2f | 1809 | if (MARK <= SP) { |
54310121 | 1810 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1811 | *MARK = TOPs; | |
1812 | else | |
1813 | *MARK = sv_mortalcopy(TOPs); | |
09256e2f | 1814 | } else { |
54310121 | 1815 | MEXTEND(mark,0); |
3280af22 | 1816 | *MARK = &PL_sv_undef; |
a0d0e21e | 1817 | } |
54310121 | 1818 | SP = MARK; |
a0d0e21e | 1819 | } |
54310121 | 1820 | else if (gimme == G_ARRAY) { |
a1f49e72 CS |
1821 | /* in case LEAVE wipes old return values */ |
1822 | for (mark = newsp + 1; mark <= SP; mark++) { | |
1823 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
a0d0e21e | 1824 | *mark = sv_mortalcopy(*mark); |
a1f49e72 CS |
1825 | TAINT_NOT; /* Each item is independent */ |
1826 | } | |
1827 | } | |
a0d0e21e | 1828 | } |
3280af22 | 1829 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e LW |
1830 | |
1831 | LEAVE; | |
1832 | ||
1833 | RETURN; | |
1834 | } | |
1835 | ||
1836 | PP(pp_iter) | |
1837 | { | |
39644a26 | 1838 | dSP; |
c09156bb | 1839 | register PERL_CONTEXT *cx; |
dc09a129 | 1840 | SV *sv, *oldsv; |
4633a7c4 | 1841 | AV* av; |
1d7c1841 | 1842 | SV **itersvp; |
a0d0e21e | 1843 | |
924508f0 | 1844 | EXTEND(SP, 1); |
a0d0e21e | 1845 | cx = &cxstack[cxstack_ix]; |
6b35e009 | 1846 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 | 1847 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1848 | |
1d7c1841 | 1849 | itersvp = CxITERVAR(cx); |
4633a7c4 | 1850 | av = cx->blk_loop.iterary; |
89ea2908 GA |
1851 | if (SvTYPE(av) != SVt_PVAV) { |
1852 | /* iterate ($min .. $max) */ | |
1853 | if (cx->blk_loop.iterlval) { | |
1854 | /* string increment */ | |
1855 | register SV* cur = cx->blk_loop.iterlval; | |
4fe3f0fa MHM |
1856 | STRLEN maxlen = 0; |
1857 | char *max = SvOK((SV*)av) ? SvPV((SV*)av, maxlen) : ""; | |
89ea2908 | 1858 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
1d7c1841 | 1859 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1860 | /* safe to reuse old SV */ |
1d7c1841 | 1861 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1862 | } |
1c846c1f | 1863 | else |
eaa5c2d6 GA |
1864 | { |
1865 | /* we need a fresh SV every time so that loop body sees a | |
1866 | * completely new SV for closures/references to work as | |
1867 | * they used to */ | |
dc09a129 | 1868 | oldsv = *itersvp; |
1d7c1841 | 1869 | *itersvp = newSVsv(cur); |
dc09a129 | 1870 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1871 | } |
89ea2908 GA |
1872 | if (strEQ(SvPVX(cur), max)) |
1873 | sv_setiv(cur, 0); /* terminate next time */ | |
1874 | else | |
1875 | sv_inc(cur); | |
1876 | RETPUSHYES; | |
1877 | } | |
1878 | RETPUSHNO; | |
1879 | } | |
1880 | /* integer increment */ | |
1881 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) | |
1882 | RETPUSHNO; | |
7f61b687 | 1883 | |
3db8f154 | 1884 | /* don't risk potential race */ |
1d7c1841 | 1885 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1886 | /* safe to reuse old SV */ |
1d7c1841 | 1887 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 | 1888 | } |
1c846c1f | 1889 | else |
eaa5c2d6 GA |
1890 | { |
1891 | /* we need a fresh SV every time so that loop body sees a | |
1892 | * completely new SV for closures/references to work as they | |
1893 | * used to */ | |
dc09a129 | 1894 | oldsv = *itersvp; |
1d7c1841 | 1895 | *itersvp = newSViv(cx->blk_loop.iterix++); |
dc09a129 | 1896 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1897 | } |
89ea2908 GA |
1898 | RETPUSHYES; |
1899 | } | |
1900 | ||
1901 | /* iterate array */ | |
ef3e5ea9 NC |
1902 | if (PL_op->op_private & OPpITER_REVERSED) { |
1903 | /* In reverse, use itermax as the min :-) */ | |
c491ecac | 1904 | if (cx->blk_loop.iterix <= cx->blk_loop.itermax) |
ef3e5ea9 | 1905 | RETPUSHNO; |
a0d0e21e | 1906 | |
ef3e5ea9 NC |
1907 | if (SvMAGICAL(av) || AvREIFY(av)) { |
1908 | SV **svp = av_fetch(av, cx->blk_loop.iterix--, FALSE); | |
1909 | if (svp) | |
1910 | sv = *svp; | |
1911 | else | |
1912 | sv = Nullsv; | |
1913 | } | |
1914 | else { | |
1915 | sv = AvARRAY(av)[cx->blk_loop.iterix--]; | |
1916 | } | |
d42935ef JH |
1917 | } |
1918 | else { | |
ef3e5ea9 NC |
1919 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : |
1920 | AvFILL(av))) | |
1921 | RETPUSHNO; | |
1922 | ||
1923 | if (SvMAGICAL(av) || AvREIFY(av)) { | |
1924 | SV **svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE); | |
1925 | if (svp) | |
1926 | sv = *svp; | |
1927 | else | |
1928 | sv = Nullsv; | |
1929 | } | |
1930 | else { | |
1931 | sv = AvARRAY(av)[++cx->blk_loop.iterix]; | |
1932 | } | |
d42935ef | 1933 | } |
ef3e5ea9 | 1934 | |
cccede53 DM |
1935 | if (sv && SvREFCNT(sv) == 0) { |
1936 | *itersvp = Nullsv; | |
b6c83531 | 1937 | Perl_croak(aTHX_ "Use of freed value in iteration"); |
cccede53 DM |
1938 | } |
1939 | ||
d42935ef | 1940 | if (sv) |
a0d0e21e | 1941 | SvTEMP_off(sv); |
a0d0e21e | 1942 | else |
3280af22 | 1943 | sv = &PL_sv_undef; |
8b530633 | 1944 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc | 1945 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc | 1946 | if (lv && SvREFCNT(lv) > 1) { |
1947 | SvREFCNT_dec(lv); | |
1948 | lv = Nullsv; | |
1949 | } | |
5f05dabc | 1950 | if (lv) |
1951 | SvREFCNT_dec(LvTARG(lv)); | |
1952 | else { | |
68dc0745 | 1953 | lv = cx->blk_loop.iterlval = NEWSV(26, 0); |
5f05dabc | 1954 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc | 1955 | LvTYPE(lv) = 'y'; |
14befaf4 | 1956 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
5f05dabc | 1957 | } |
1958 | LvTARG(lv) = SvREFCNT_inc(av); | |
1959 | LvTARGOFF(lv) = cx->blk_loop.iterix; | |
42718184 | 1960 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc | 1961 | sv = (SV*)lv; |
1962 | } | |
a0d0e21e | 1963 | |
dc09a129 | 1964 | oldsv = *itersvp; |
1d7c1841 | 1965 | *itersvp = SvREFCNT_inc(sv); |
dc09a129 DM |
1966 | SvREFCNT_dec(oldsv); |
1967 | ||
a0d0e21e LW |
1968 | RETPUSHYES; |
1969 | } | |
1970 | ||
1971 | PP(pp_subst) | |
1972 | { | |
39644a26 | 1973 | dSP; dTARG; |
a0d0e21e LW |
1974 | register PMOP *pm = cPMOP; |
1975 | PMOP *rpm = pm; | |
1976 | register SV *dstr; | |
1977 | register char *s; | |
1978 | char *strend; | |
1979 | register char *m; | |
1980 | char *c; | |
1981 | register char *d; | |
1982 | STRLEN clen; | |
1983 | I32 iters = 0; | |
1984 | I32 maxiters; | |
1985 | register I32 i; | |
1986 | bool once; | |
71be2cbc | 1987 | bool rxtainted; |
a0d0e21e | 1988 | char *orig; |
22e551b9 | 1989 | I32 r_flags; |
aaa362c4 | 1990 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
1991 | STRLEN len; |
1992 | int force_on_match = 0; | |
3280af22 | 1993 | I32 oldsave = PL_savestack_ix; |
792b2c16 | 1994 | STRLEN slen; |
f272994b | 1995 | bool doutf8 = FALSE; |
ed252734 NC |
1996 | #ifdef PERL_COPY_ON_WRITE |
1997 | bool is_cow; | |
1998 | #endif | |
db79b45b | 1999 | SV *nsv = Nullsv; |
a0d0e21e | 2000 | |
5cd24f17 | 2001 | /* known replacement string? */ |
2002 | dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; | |
533c011a | 2003 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 2004 | TARG = POPs; |
59f00321 RGS |
2005 | else if (PL_op->op_private & OPpTARGET_MY) |
2006 | GETTARGET; | |
a0d0e21e | 2007 | else { |
54b9620d | 2008 | TARG = DEFSV; |
a0d0e21e | 2009 | EXTEND(SP,1); |
1c846c1f | 2010 | } |
d9f424b2 | 2011 | |
ed252734 NC |
2012 | #ifdef PERL_COPY_ON_WRITE |
2013 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, | |
2014 | because they make integers such as 256 "false". */ | |
2015 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
2016 | #else | |
765f542d NC |
2017 | if (SvIsCOW(TARG)) |
2018 | sv_force_normal_flags(TARG,0); | |
ed252734 NC |
2019 | #endif |
2020 | if ( | |
2021 | #ifdef PERL_COPY_ON_WRITE | |
2022 | !is_cow && | |
2023 | #endif | |
2024 | (SvREADONLY(TARG) | |
4ce457a6 TP |
2025 | || ( (SvTYPE(TARG) == SVt_PVGV || SvTYPE(TARG) > SVt_PVLV) |
2026 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) | |
d470f89e | 2027 | DIE(aTHX_ PL_no_modify); |
8ec5e241 NIS |
2028 | PUTBACK; |
2029 | ||
a0d0e21e | 2030 | s = SvPV(TARG, len); |
68dc0745 | 2031 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 2032 | force_on_match = 1; |
b3eb6a9b | 2033 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 NIS |
2034 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
2035 | if (PL_tainted) | |
b3eb6a9b | 2036 | rxtainted |= 2; |
9212bbba | 2037 | TAINT_NOT; |
a12c0f56 | 2038 | |
a30b2f1f | 2039 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 2040 | |
a0d0e21e LW |
2041 | force_it: |
2042 | if (!pm || !s) | |
2269b42e | 2043 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
2044 | |
2045 | strend = s + len; | |
a30b2f1f | 2046 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
2047 | maxiters = 2 * slen + 10; /* We can match twice at each |
2048 | position, once with zero-length, | |
2049 | second time with non-zero. */ | |
a0d0e21e | 2050 | |
3280af22 NIS |
2051 | if (!rx->prelen && PL_curpm) { |
2052 | pm = PL_curpm; | |
aaa362c4 | 2053 | rx = PM_GETRE(pm); |
a0d0e21e | 2054 | } |
22e551b9 | 2055 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) |
ed252734 | 2056 | ? REXEC_COPY_STR : 0; |
f722798b | 2057 | if (SvSCREAM(TARG)) |
22e551b9 | 2058 | r_flags |= REXEC_SCREAM; |
e8f49695 | 2059 | if ((int)(pm->op_pmflags & PMf_MULTILINE) != PL_multiline) { |
3280af22 NIS |
2060 | SAVEINT(PL_multiline); |
2061 | PL_multiline = pm->op_pmflags & PMf_MULTILINE; | |
a0d0e21e LW |
2062 | } |
2063 | orig = m = s; | |
f722798b | 2064 | if (rx->reganch & RE_USE_INTUIT) { |
ee0b7718 | 2065 | PL_bostr = orig; |
f722798b IZ |
2066 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
2067 | ||
2068 | if (!s) | |
2069 | goto nope; | |
2070 | /* How to do it in subst? */ | |
2071 | /* if ( (rx->reganch & ROPT_CHECK_ALL) | |
1c846c1f | 2072 | && !PL_sawampersand |
f722798b IZ |
2073 | && ((rx->reganch & ROPT_NOSCAN) |
2074 | || !((rx->reganch & RE_INTUIT_TAIL) | |
2075 | && (r_flags & REXEC_SCREAM)))) | |
2076 | goto yup; | |
2077 | */ | |
a0d0e21e | 2078 | } |
71be2cbc | 2079 | |
2080 | /* only replace once? */ | |
a0d0e21e | 2081 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc | 2082 | |
2083 | /* known replacement string? */ | |
f272994b | 2084 | if (dstr) { |
8514a05a JH |
2085 | /* replacement needing upgrading? */ |
2086 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 2087 | nsv = sv_newmortal(); |
4a176938 | 2088 | SvSetSV(nsv, dstr); |
8514a05a JH |
2089 | if (PL_encoding) |
2090 | sv_recode_to_utf8(nsv, PL_encoding); | |
2091 | else | |
2092 | sv_utf8_upgrade(nsv); | |
2093 | c = SvPV(nsv, clen); | |
4a176938 JH |
2094 | doutf8 = TRUE; |
2095 | } | |
2096 | else { | |
2097 | c = SvPV(dstr, clen); | |
2098 | doutf8 = DO_UTF8(dstr); | |
8514a05a | 2099 | } |
f272994b A |
2100 | } |
2101 | else { | |
2102 | c = Nullch; | |
2103 | doutf8 = FALSE; | |
2104 | } | |
2105 | ||
71be2cbc | 2106 | /* can do inplace substitution? */ |
ed252734 NC |
2107 | if (c |
2108 | #ifdef PERL_COPY_ON_WRITE | |
2109 | && !is_cow | |
2110 | #endif | |
2111 | && (I32)clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) | |
db79b45b JH |
2112 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN) |
2113 | && (!doutf8 || SvUTF8(TARG))) { | |
f722798b IZ |
2114 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2115 | r_flags | REXEC_CHECKED)) | |
2116 | { | |
8ec5e241 | 2117 | SPAGAIN; |
3280af22 | 2118 | PUSHs(&PL_sv_no); |
71be2cbc | 2119 | LEAVE_SCOPE(oldsave); |
2120 | RETURN; | |
2121 | } | |
ed252734 NC |
2122 | #ifdef PERL_COPY_ON_WRITE |
2123 | if (SvIsCOW(TARG)) { | |
2124 | assert (!force_on_match); | |
2125 | goto have_a_cow; | |
2126 | } | |
2127 | #endif | |
71be2cbc | 2128 | if (force_on_match) { |
2129 | force_on_match = 0; | |
2130 | s = SvPV_force(TARG, len); | |
2131 | goto force_it; | |
2132 | } | |
71be2cbc | 2133 | d = s; |
3280af22 | 2134 | PL_curpm = pm; |
71be2cbc | 2135 | SvSCREAM_off(TARG); /* disable possible screamer */ |
2136 | if (once) { | |
48c036b1 | 2137 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d IZ |
2138 | m = orig + rx->startp[0]; |
2139 | d = orig + rx->endp[0]; | |
71be2cbc | 2140 | s = orig; |
2141 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2142 | if (clen) { | |
2143 | Copy(c, m, clen, char); | |
2144 | m += clen; | |
a0d0e21e | 2145 | } |
71be2cbc | 2146 | i = strend - d; |
2147 | if (i > 0) { | |
2148 | Move(d, m, i, char); | |
2149 | m += i; | |
a0d0e21e | 2150 | } |
71be2cbc | 2151 | *m = '\0'; |
2152 | SvCUR_set(TARG, m - s); | |
2153 | } | |
2154 | /*SUPPRESS 560*/ | |
155aba94 | 2155 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc | 2156 | d -= clen; |
2157 | m = d; | |
2158 | sv_chop(TARG, d-i); | |
2159 | s += i; | |
2160 | while (i--) | |
2161 | *--d = *--s; | |
2162 | if (clen) | |
2163 | Copy(c, m, clen, char); | |
2164 | } | |
2165 | else if (clen) { | |
2166 | d -= clen; | |
2167 | sv_chop(TARG, d); | |
2168 | Copy(c, d, clen, char); | |
2169 | } | |
2170 | else { | |
2171 | sv_chop(TARG, d); | |
2172 | } | |
48c036b1 | 2173 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2174 | SPAGAIN; |
3280af22 | 2175 | PUSHs(&PL_sv_yes); |
71be2cbc | 2176 | } |
2177 | else { | |
71be2cbc | 2178 | do { |
2179 | if (iters++ > maxiters) | |
cea2e8a9 | 2180 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2181 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2182 | m = rx->startp[0] + orig; |
71be2cbc | 2183 | /*SUPPRESS 560*/ |
155aba94 | 2184 | if ((i = m - s)) { |
71be2cbc | 2185 | if (s != d) |
2186 | Move(s, d, i, char); | |
2187 | d += i; | |
a0d0e21e | 2188 | } |
71be2cbc | 2189 | if (clen) { |
2190 | Copy(c, d, clen, char); | |
2191 | d += clen; | |
2192 | } | |
cf93c79d | 2193 | s = rx->endp[0] + orig; |
cea2e8a9 | 2194 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b IZ |
2195 | TARG, NULL, |
2196 | /* don't match same null twice */ | |
2197 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 2198 | if (s != d) { |
2199 | i = strend - s; | |
2200 | SvCUR_set(TARG, d - SvPVX(TARG) + i); | |
2201 | Move(s, d, i+1, char); /* include the NUL */ | |
a0d0e21e | 2202 | } |
48c036b1 | 2203 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2204 | SPAGAIN; |
71be2cbc | 2205 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e | 2206 | } |
80b498e0 | 2207 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 | 2208 | TAINT_IF(rxtainted); |
8ec5e241 NIS |
2209 | if (SvSMAGICAL(TARG)) { |
2210 | PUTBACK; | |
2211 | mg_set(TARG); | |
2212 | SPAGAIN; | |
2213 | } | |
9212bbba | 2214 | SvTAINT(TARG); |
aefe6dfc JH |
2215 | if (doutf8) |
2216 | SvUTF8_on(TARG); | |
71be2cbc | 2217 | LEAVE_SCOPE(oldsave); |
2218 | RETURN; | |
a0d0e21e | 2219 | } |
71be2cbc | 2220 | |
f722798b IZ |
2221 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2222 | r_flags | REXEC_CHECKED)) | |
2223 | { | |
a0d0e21e LW |
2224 | if (force_on_match) { |
2225 | force_on_match = 0; | |
2226 | s = SvPV_force(TARG, len); | |
2227 | goto force_it; | |
2228 | } | |
ed252734 NC |
2229 | #ifdef PERL_COPY_ON_WRITE |
2230 | have_a_cow: | |
2231 | #endif | |
48c036b1 | 2232 | rxtainted |= RX_MATCH_TAINTED(rx); |
8ec5e241 | 2233 | dstr = NEWSV(25, len); |
a0d0e21e | 2234 | sv_setpvn(dstr, m, s-m); |
ffc61ed2 JH |
2235 | if (DO_UTF8(TARG)) |
2236 | SvUTF8_on(dstr); | |
3280af22 | 2237 | PL_curpm = pm; |
a0d0e21e | 2238 | if (!c) { |
c09156bb | 2239 | register PERL_CONTEXT *cx; |
8ec5e241 | 2240 | SPAGAIN; |
d8f2cf8a | 2241 | ReREFCNT_inc(rx); |
a0d0e21e LW |
2242 | PUSHSUBST(cx); |
2243 | RETURNOP(cPMOP->op_pmreplroot); | |
2244 | } | |
cf93c79d | 2245 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2246 | do { |
2247 | if (iters++ > maxiters) | |
cea2e8a9 | 2248 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2249 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2250 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e LW |
2251 | m = s; |
2252 | s = orig; | |
cf93c79d | 2253 | orig = rx->subbeg; |
a0d0e21e LW |
2254 | s = orig + (m - s); |
2255 | strend = s + (strend - m); | |
2256 | } | |
cf93c79d | 2257 | m = rx->startp[0] + orig; |
db79b45b JH |
2258 | if (doutf8 && !SvUTF8(dstr)) |
2259 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); | |
2260 | else | |
2261 | sv_catpvn(dstr, s, m-s); | |
cf93c79d | 2262 | s = rx->endp[0] + orig; |
a0d0e21e LW |
2263 | if (clen) |
2264 | sv_catpvn(dstr, c, clen); | |
2265 | if (once) | |
2266 | break; | |
ffc61ed2 JH |
2267 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2268 | TARG, NULL, r_flags)); | |
db79b45b JH |
2269 | if (doutf8 && !DO_UTF8(TARG)) |
2270 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); | |
89afcb60 A |
2271 | else |
2272 | sv_catpvn(dstr, s, strend - s); | |
748a9306 | 2273 | |
ed252734 NC |
2274 | #ifdef PERL_COPY_ON_WRITE |
2275 | /* The match may make the string COW. If so, brilliant, because that's | |
2276 | just saved us one malloc, copy and free - the regexp has donated | |
2277 | the old buffer, and we malloc an entirely new one, rather than the | |
2278 | regexp malloc()ing a buffer and copying our original, only for | |
2279 | us to throw it away here during the substitution. */ | |
2280 | if (SvIsCOW(TARG)) { | |
2281 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
2282 | } else | |
2283 | #endif | |
2284 | { | |
2285 | (void)SvOOK_off(TARG); | |
2286 | if (SvLEN(TARG)) | |
2287 | Safefree(SvPVX(TARG)); | |
2288 | } | |
748a9306 LW |
2289 | SvPVX(TARG) = SvPVX(dstr); |
2290 | SvCUR_set(TARG, SvCUR(dstr)); | |
2291 | SvLEN_set(TARG, SvLEN(dstr)); | |
f272994b | 2292 | doutf8 |= DO_UTF8(dstr); |
748a9306 LW |
2293 | SvPVX(dstr) = 0; |
2294 | sv_free(dstr); | |
2295 | ||
48c036b1 | 2296 | TAINT_IF(rxtainted & 1); |
f878fbec | 2297 | SPAGAIN; |
48c036b1 GS |
2298 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2299 | ||
a0d0e21e | 2300 | (void)SvPOK_only(TARG); |
f272994b | 2301 | if (doutf8) |
60aeb6fd | 2302 | SvUTF8_on(TARG); |
48c036b1 | 2303 | TAINT_IF(rxtainted); |
a0d0e21e | 2304 | SvSETMAGIC(TARG); |
9212bbba | 2305 | SvTAINT(TARG); |
4633a7c4 | 2306 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2307 | RETURN; |
2308 | } | |
5cd24f17 | 2309 | goto ret_no; |
a0d0e21e LW |
2310 | |
2311 | nope: | |
1c846c1f | 2312 | ret_no: |
8ec5e241 | 2313 | SPAGAIN; |
3280af22 | 2314 | PUSHs(&PL_sv_no); |
4633a7c4 | 2315 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2316 | RETURN; |
2317 | } | |
2318 | ||
2319 | PP(pp_grepwhile) | |
2320 | { | |
39644a26 | 2321 | dSP; |
a0d0e21e LW |
2322 | |
2323 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2324 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2325 | ++*PL_markstack_ptr; | |
a0d0e21e LW |
2326 | LEAVE; /* exit inner scope */ |
2327 | ||
2328 | /* All done yet? */ | |
3280af22 | 2329 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2330 | I32 items; |
54310121 | 2331 | I32 gimme = GIMME_V; |
a0d0e21e LW |
2332 | |
2333 | LEAVE; /* exit outer scope */ | |
2334 | (void)POPMARK; /* pop src */ | |
3280af22 | 2335 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2336 | (void)POPMARK; /* pop dst */ |
3280af22 | 2337 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2338 | if (gimme == G_SCALAR) { |
7cc47870 RGS |
2339 | if (PL_op->op_private & OPpGREP_LEX) { |
2340 | SV* sv = sv_newmortal(); | |
2341 | sv_setiv(sv, items); | |
2342 | PUSHs(sv); | |
2343 | } | |
2344 | else { | |
2345 | dTARGET; | |
2346 | XPUSHi(items); | |
2347 | } | |
a0d0e21e | 2348 | } |
54310121 | 2349 | else if (gimme == G_ARRAY) |
2350 | SP += items; | |
a0d0e21e LW |
2351 | RETURN; |
2352 | } | |
2353 | else { | |
2354 | SV *src; | |
2355 | ||
2356 | ENTER; /* enter inner scope */ | |
1d7c1841 | 2357 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2358 | |
3280af22 | 2359 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2360 | SvTEMP_off(src); |
59f00321 RGS |
2361 | if (PL_op->op_private & OPpGREP_LEX) |
2362 | PAD_SVl(PL_op->op_targ) = src; | |
2363 | else | |
2364 | DEFSV = src; | |
a0d0e21e LW |
2365 | |
2366 | RETURNOP(cLOGOP->op_other); | |
2367 | } | |
2368 | } | |
2369 | ||
2370 | PP(pp_leavesub) | |
2371 | { | |
39644a26 | 2372 | dSP; |
a0d0e21e LW |
2373 | SV **mark; |
2374 | SV **newsp; | |
2375 | PMOP *newpm; | |
2376 | I32 gimme; | |
c09156bb | 2377 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2378 | SV *sv; |
a0d0e21e LW |
2379 | |
2380 | POPBLOCK(cx,newpm); | |
5dd42e15 | 2381 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2382 | |
a1f49e72 | 2383 | TAINT_NOT; |
a0d0e21e LW |
2384 | if (gimme == G_SCALAR) { |
2385 | MARK = newsp + 1; | |
a29cdaf0 | 2386 | if (MARK <= SP) { |
a8bba7fa | 2387 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 IZ |
2388 | if (SvTEMP(TOPs)) { |
2389 | *MARK = SvREFCNT_inc(TOPs); | |
2390 | FREETMPS; | |
2391 | sv_2mortal(*MARK); | |
cd06dffe GS |
2392 | } |
2393 | else { | |
959e3673 | 2394 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2395 | FREETMPS; |
959e3673 GS |
2396 | *MARK = sv_mortalcopy(sv); |
2397 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2398 | } |
cd06dffe GS |
2399 | } |
2400 | else | |
a29cdaf0 | 2401 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe GS |
2402 | } |
2403 | else { | |
f86702cc | 2404 | MEXTEND(MARK, 0); |
3280af22 | 2405 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2406 | } |
2407 | SP = MARK; | |
2408 | } | |
54310121 | 2409 | else if (gimme == G_ARRAY) { |
f86702cc | 2410 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 | 2411 | if (!SvTEMP(*MARK)) { |
f86702cc | 2412 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2413 | TAINT_NOT; /* Each item is independent */ |
2414 | } | |
f86702cc | 2415 | } |
a0d0e21e | 2416 | } |
f86702cc | 2417 | PUTBACK; |
1c846c1f | 2418 | |
5dd42e15 DM |
2419 | LEAVE; |
2420 | cxstack_ix--; | |
b0d9ce38 | 2421 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2422 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2423 | |
b0d9ce38 | 2424 | LEAVESUB(sv); |
f39bc417 | 2425 | return cx->blk_sub.retop; |
a0d0e21e LW |
2426 | } |
2427 | ||
cd06dffe GS |
2428 | /* This duplicates the above code because the above code must not |
2429 | * get any slower by more conditions */ | |
2430 | PP(pp_leavesublv) | |
2431 | { | |
39644a26 | 2432 | dSP; |
cd06dffe GS |
2433 | SV **mark; |
2434 | SV **newsp; | |
2435 | PMOP *newpm; | |
2436 | I32 gimme; | |
2437 | register PERL_CONTEXT *cx; | |
b0d9ce38 | 2438 | SV *sv; |
cd06dffe GS |
2439 | |
2440 | POPBLOCK(cx,newpm); | |
5dd42e15 | 2441 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2442 | |
cd06dffe GS |
2443 | TAINT_NOT; |
2444 | ||
2445 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { | |
2446 | /* We are an argument to a function or grep(). | |
2447 | * This kind of lvalueness was legal before lvalue | |
2448 | * subroutines too, so be backward compatible: | |
2449 | * cannot report errors. */ | |
2450 | ||
2451 | /* Scalar context *is* possible, on the LHS of -> only, | |
2452 | * as in f()->meth(). But this is not an lvalue. */ | |
2453 | if (gimme == G_SCALAR) | |
2454 | goto temporise; | |
2455 | if (gimme == G_ARRAY) { | |
a8bba7fa | 2456 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe GS |
2457 | goto temporise_array; |
2458 | EXTEND_MORTAL(SP - newsp); | |
2459 | for (mark = newsp + 1; mark <= SP; mark++) { | |
2460 | if (SvTEMP(*mark)) | |
2461 | /* empty */ ; | |
2462 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) | |
2463 | *mark = sv_mortalcopy(*mark); | |
2464 | else { | |
2465 | /* Can be a localized value subject to deletion. */ | |
2466 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2467 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2468 | } |
2469 | } | |
2470 | } | |
2471 | } | |
2472 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ | |
2473 | /* Here we go for robustness, not for speed, so we change all | |
2474 | * the refcounts so the caller gets a live guy. Cannot set | |
2475 | * TEMP, so sv_2mortal is out of question. */ | |
a8bba7fa | 2476 | if (!CvLVALUE(cx->blk_sub.cv)) { |
5dd42e15 DM |
2477 | LEAVE; |
2478 | cxstack_ix--; | |
b0d9ce38 | 2479 | POPSUB(cx,sv); |
d470f89e | 2480 | PL_curpm = newpm; |
b0d9ce38 | 2481 | LEAVESUB(sv); |
d470f89e GS |
2482 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2483 | } | |
cd06dffe GS |
2484 | if (gimme == G_SCALAR) { |
2485 | MARK = newsp + 1; | |
2486 | EXTEND_MORTAL(1); | |
2487 | if (MARK == SP) { | |
d470f89e | 2488 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { |
5dd42e15 DM |
2489 | LEAVE; |
2490 | cxstack_ix--; | |
b0d9ce38 | 2491 | POPSUB(cx,sv); |
d470f89e | 2492 | PL_curpm = newpm; |
b0d9ce38 | 2493 | LEAVESUB(sv); |
e9f19e3c HS |
2494 | DIE(aTHX_ "Can't return %s from lvalue subroutine", |
2495 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" | |
2496 | : "a readonly value" : "a temporary"); | |
d470f89e | 2497 | } |
cd06dffe GS |
2498 | else { /* Can be a localized value |
2499 | * subject to deletion. */ | |
2500 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2501 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2502 | } |
2503 | } | |
d470f89e | 2504 | else { /* Should not happen? */ |
5dd42e15 DM |
2505 | LEAVE; |
2506 | cxstack_ix--; | |
b0d9ce38 | 2507 | POPSUB(cx,sv); |
d470f89e | 2508 | PL_curpm = newpm; |
b0d9ce38 | 2509 | LEAVESUB(sv); |
d470f89e | 2510 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe | 2511 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e | 2512 | } |
cd06dffe GS |
2513 | SP = MARK; |
2514 | } | |
2515 | else if (gimme == G_ARRAY) { | |
2516 | EXTEND_MORTAL(SP - newsp); | |
2517 | for (mark = newsp + 1; mark <= SP; mark++) { | |
f206cdda AMS |
2518 | if (*mark != &PL_sv_undef |
2519 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { | |
d470f89e GS |
2520 | /* Might be flattened array after $#array = */ |
2521 | PUTBACK; | |
5dd42e15 DM |
2522 | LEAVE; |
2523 | cxstack_ix--; | |
b0d9ce38 | 2524 | POPSUB(cx,sv); |
d470f89e | 2525 | PL_curpm = newpm; |
b0d9ce38 | 2526 | LEAVESUB(sv); |
f206cdda AMS |
2527 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2528 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
d470f89e | 2529 | } |
cd06dffe | 2530 | else { |
cd06dffe GS |
2531 | /* Can be a localized value subject to deletion. */ |
2532 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
e1f15930 | 2533 | (void)SvREFCNT_inc(*mark); |
cd06dffe GS |
2534 | } |
2535 | } | |
2536 | } | |
2537 | } | |
2538 | else { | |
2539 | if (gimme == G_SCALAR) { | |
2540 | temporise: | |
2541 | MARK = newsp + 1; | |
2542 | if (MARK <= SP) { | |
a8bba7fa | 2543 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe GS |
2544 | if (SvTEMP(TOPs)) { |
2545 | *MARK = SvREFCNT_inc(TOPs); | |
2546 | FREETMPS; | |
2547 | sv_2mortal(*MARK); | |
2548 | } | |
2549 | else { | |
959e3673 | 2550 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe | 2551 | FREETMPS; |
959e3673 GS |
2552 | *MARK = sv_mortalcopy(sv); |
2553 | SvREFCNT_dec(sv); | |
cd06dffe GS |
2554 | } |
2555 | } | |
2556 | else | |
2557 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
2558 | } | |
2559 | else { | |
2560 | MEXTEND(MARK, 0); | |
2561 | *MARK = &PL_sv_undef; | |
2562 | } | |
2563 | SP = MARK; | |
2564 | } | |
2565 | else if (gimme == G_ARRAY) { | |
2566 | temporise_array: | |
2567 | for (MARK = newsp + 1; MARK <= SP; MARK++) { | |
2568 | if (!SvTEMP(*MARK)) { | |
2569 | *MARK = sv_mortalcopy(*MARK); | |
2570 | TAINT_NOT; /* Each item is independent */ | |
2571 | } | |
2572 | } | |
2573 | } | |
2574 | } | |
2575 | PUTBACK; | |
1c846c1f | 2576 | |
5dd42e15 DM |
2577 | LEAVE; |
2578 | cxstack_ix--; | |
b0d9ce38 | 2579 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe GS |
2580 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2581 | ||
b0d9ce38 | 2582 | LEAVESUB(sv); |
f39bc417 | 2583 | return cx->blk_sub.retop; |
cd06dffe GS |
2584 | } |
2585 | ||
2586 | ||
76e3520e | 2587 | STATIC CV * |
cea2e8a9 | 2588 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 | 2589 | { |
3280af22 | 2590 | SV *dbsv = GvSV(PL_DBsub); |
491527d0 GS |
2591 | |
2592 | if (!PERLDB_SUB_NN) { | |
2593 | GV *gv = CvGV(cv); | |
2594 | ||
2595 | save_item(dbsv); | |
2596 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) | |
1c846c1f | 2597 | || strEQ(GvNAME(gv), "END") |
491527d0 GS |
2598 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
2599 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) | |
2600 | && (gv = (GV*)*svp) ))) { | |
2601 | /* Use GV from the stack as a fallback. */ | |
2602 | /* GV is potentially non-unique, or contain different CV. */ | |
c2e66d9e GS |
2603 | SV *tmp = newRV((SV*)cv); |
2604 | sv_setsv(dbsv, tmp); | |
2605 | SvREFCNT_dec(tmp); | |
491527d0 GS |
2606 | } |
2607 | else { | |
2608 | gv_efullname3(dbsv, gv, Nullch); | |
2609 | } | |
3de9ffa1 MB |
2610 | } |
2611 | else { | |
155aba94 GS |
2612 | (void)SvUPGRADE(dbsv, SVt_PVIV); |
2613 | (void)SvIOK_on(dbsv); | |
491527d0 | 2614 | SAVEIV(SvIVX(dbsv)); |
5bc28da9 | 2615 | SvIVX(dbsv) = PTR2IV(cv); /* Do it the quickest way */ |
3de9ffa1 | 2616 | } |
491527d0 | 2617 | |
3de9ffa1 | 2618 | if (CvXSUB(cv)) |
3280af22 NIS |
2619 | PL_curcopdb = PL_curcop; |
2620 | cv = GvCV(PL_DBsub); | |
3de9ffa1 MB |
2621 | return cv; |
2622 | } | |
2623 | ||
a0d0e21e LW |
2624 | PP(pp_entersub) |
2625 | { | |
39644a26 | 2626 | dSP; dPOPss; |
a0d0e21e LW |
2627 | GV *gv; |
2628 | HV *stash; | |
2629 | register CV *cv; | |
c09156bb | 2630 | register PERL_CONTEXT *cx; |
5d94fbed | 2631 | I32 gimme; |
533c011a | 2632 | bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2633 | |
2634 | if (!sv) | |
cea2e8a9 | 2635 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e | 2636 | switch (SvTYPE(sv)) { |
f1025168 NC |
2637 | /* This is overwhelming the most common case: */ |
2638 | case SVt_PVGV: | |
2639 | if (!(cv = GvCVu((GV*)sv))) | |
2640 | cv = sv_2cv(sv, &stash, &gv, FALSE); | |
2641 | if (!cv) { | |
2642 | ENTER; | |
2643 | SAVETMPS; | |
2644 | goto try_autoload; | |
2645 | } | |
2646 | break; | |
a0d0e21e LW |
2647 | default: |
2648 | if (!SvROK(sv)) { | |
748a9306 | 2649 | char *sym; |
2d8e6c8d | 2650 | STRLEN n_a; |
748a9306 | 2651 | |
3280af22 | 2652 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a | 2653 | if (hasargs) |
3280af22 | 2654 | SP = PL_stack_base + POPMARK; |
a0d0e21e | 2655 | RETURN; |
fb73857a | 2656 | } |
15ff848f CS |
2657 | if (SvGMAGICAL(sv)) { |
2658 | mg_get(sv); | |
f5f1d18e AMS |
2659 | if (SvROK(sv)) |
2660 | goto got_rv; | |
15ff848f CS |
2661 | sym = SvPOKp(sv) ? SvPVX(sv) : Nullch; |
2662 | } | |
2663 | else | |
2d8e6c8d | 2664 | sym = SvPV(sv, n_a); |
15ff848f | 2665 | if (!sym) |
cea2e8a9 | 2666 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2667 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 | 2668 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 | 2669 | cv = get_cv(sym, TRUE); |
a0d0e21e LW |
2670 | break; |
2671 | } | |
f5f1d18e | 2672 | got_rv: |
f5284f61 IZ |
2673 | { |
2674 | SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */ | |
2675 | tryAMAGICunDEREF(to_cv); | |
2676 | } | |
a0d0e21e LW |
2677 | cv = (CV*)SvRV(sv); |
2678 | if (SvTYPE(cv) == SVt_PVCV) | |
2679 | break; | |
2680 | /* FALL THROUGH */ | |
2681 | case SVt_PVHV: | |
2682 | case SVt_PVAV: | |
cea2e8a9 | 2683 | DIE(aTHX_ "Not a CODE reference"); |
f1025168 | 2684 | /* This is the second most common case: */ |
a0d0e21e LW |
2685 | case SVt_PVCV: |
2686 | cv = (CV*)sv; | |
2687 | break; | |
a0d0e21e LW |
2688 | } |
2689 | ||
2690 | ENTER; | |
2691 | SAVETMPS; | |
2692 | ||
2693 | retry: | |
a0d0e21e | 2694 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
f1025168 | 2695 | goto fooey; |
a0d0e21e LW |
2696 | } |
2697 | ||
54310121 | 2698 | gimme = GIMME_V; |
67caa1fe | 2699 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
06492da6 SF |
2700 | if (CvASSERTION(cv) && PL_DBassertion) |
2701 | sv_setiv(PL_DBassertion, 1); | |
2702 | ||
4f01c5a5 | 2703 | cv = get_db_sub(&sv, cv); |
67caa1fe | 2704 | if (!cv) |
cea2e8a9 | 2705 | DIE(aTHX_ "No DBsub routine"); |
67caa1fe | 2706 | } |
a0d0e21e | 2707 | |
f1025168 NC |
2708 | if (!(CvXSUB(cv))) { |
2709 | /* This path taken at least 75% of the time */ | |
a0d0e21e LW |
2710 | dMARK; |
2711 | register I32 items = SP - MARK; | |
a0d0e21e | 2712 | AV* padlist = CvPADLIST(cv); |
a0d0e21e LW |
2713 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2714 | PUSHSUB(cx); | |
f39bc417 | 2715 | cx->blk_sub.retop = PL_op->op_next; |
a0d0e21e | 2716 | CvDEPTH(cv)++; |
6b35e009 GS |
2717 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2718 | * that eval'' ops within this sub know the correct lexical space. | |
a3985cdc DM |
2719 | * Owing the speed considerations, we choose instead to search for |
2720 | * the cv using find_runcv() when calling doeval(). | |
6b35e009 | 2721 | */ |
b36bdeca | 2722 | if (CvDEPTH(cv) >= 2) { |
1d7c1841 | 2723 | PERL_STACK_OVERFLOW_CHECK(); |
dd2155a4 | 2724 | pad_push(padlist, CvDEPTH(cv), 1); |
a0d0e21e | 2725 | } |
dd2155a4 | 2726 | PAD_SET_CUR(padlist, CvDEPTH(cv)); |
6d4ff0d2 | 2727 | if (hasargs) |
6d4ff0d2 MB |
2728 | { |
2729 | AV* av; | |
a0d0e21e LW |
2730 | SV** ary; |
2731 | ||
77a005ab | 2732 | #if 0 |
bf49b057 | 2733 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2734 | "%p entersub preparing @_\n", thr)); |
77a005ab | 2735 | #endif |
dd2155a4 | 2736 | av = (AV*)PAD_SVl(0); |
221373f0 GS |
2737 | if (AvREAL(av)) { |
2738 | /* @_ is normally not REAL--this should only ever | |
2739 | * happen when DB::sub() calls things that modify @_ */ | |
2740 | av_clear(av); | |
2741 | AvREAL_off(av); | |
2742 | AvREIFY_on(av); | |
2743 | } | |
3280af22 NIS |
2744 | cx->blk_sub.savearray = GvAV(PL_defgv); |
2745 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av); | |
dd2155a4 | 2746 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2747 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2748 | ++MARK; |
2749 | ||
2750 | if (items > AvMAX(av) + 1) { | |
2751 | ary = AvALLOC(av); | |
2752 | if (AvARRAY(av) != ary) { | |
2753 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
2754 | SvPVX(av) = (char*)ary; | |
2755 | } | |
2756 | if (items > AvMAX(av) + 1) { | |
2757 | AvMAX(av) = items - 1; | |
2758 | Renew(ary,items,SV*); | |
2759 | AvALLOC(av) = ary; | |
2760 | SvPVX(av) = (char*)ary; | |
2761 | } | |
2762 | } | |
2763 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2764 | AvFILLp(av) = items - 1; |
1c846c1f | 2765 | |
a0d0e21e LW |
2766 | while (items--) { |
2767 | if (*MARK) | |
2768 | SvTEMP_off(*MARK); | |
2769 | MARK++; | |
2770 | } | |
2771 | } | |
4a925ff6 GS |
2772 | /* warning must come *after* we fully set up the context |
2773 | * stuff so that __WARN__ handlers can safely dounwind() | |
2774 | * if they want to | |
2775 | */ | |
2776 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) | |
2777 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) | |
2778 | sub_crush_depth(cv); | |
77a005ab | 2779 | #if 0 |
bf49b057 | 2780 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2781 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab | 2782 | #endif |
a0d0e21e LW |
2783 | RETURNOP(CvSTART(cv)); |
2784 | } | |
f1025168 NC |
2785 | else { |
2786 | #ifdef PERL_XSUB_OLDSTYLE | |
2787 | if (CvOLDSTYLE(cv)) { | |
2788 | I32 (*fp3)(int,int,int); | |
2789 | dMARK; | |
2790 | register I32 items = SP - MARK; | |
2791 | /* We dont worry to copy from @_. */ | |
2792 | while (SP > mark) { | |
2793 | SP[1] = SP[0]; | |
2794 | SP--; | |
2795 | } | |
2796 | PL_stack_sp = mark + 1; | |
2797 | fp3 = (I32(*)(int,int,int))CvXSUB(cv); | |
2798 | items = (*fp3)(CvXSUBANY(cv).any_i32, | |
2799 | MARK - PL_stack_base + 1, | |
2800 | items); | |
2801 | PL_stack_sp = PL_stack_base + items; | |
2802 | } | |
2803 | else | |
2804 | #endif /* PERL_XSUB_OLDSTYLE */ | |
2805 | { | |
2806 | I32 markix = TOPMARK; | |
2807 | ||
2808 | PUTBACK; | |
2809 | ||
2810 | if (!hasargs) { | |
2811 | /* Need to copy @_ to stack. Alternative may be to | |
2812 | * switch stack to @_, and copy return values | |
2813 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
2814 | AV* av; | |
2815 | I32 items; | |
2816 | av = GvAV(PL_defgv); | |
2817 | items = AvFILLp(av) + 1; /* @_ is not tieable */ | |
2818 | ||
2819 | if (items) { | |
2820 | /* Mark is at the end of the stack. */ | |
2821 | EXTEND(SP, items); | |
2822 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2823 | SP += items; | |
2824 | PUTBACK ; | |
2825 | } | |
2826 | } | |
2827 | /* We assume first XSUB in &DB::sub is the called one. */ | |
2828 | if (PL_curcopdb) { | |
2829 | SAVEVPTR(PL_curcop); | |
2830 | PL_curcop = PL_curcopdb; | |
2831 | PL_curcopdb = NULL; | |
2832 | } | |
2833 | /* Do we need to open block here? XXXX */ | |
2834 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
2835 | ||
2836 | /* Enforce some sanity in scalar context. */ | |
2837 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { | |
2838 | if (markix > PL_stack_sp - PL_stack_base) | |
2839 | *(PL_stack_base + markix) = &PL_sv_undef; | |
2840 | else | |
2841 | *(PL_stack_base + markix) = *PL_stack_sp; | |
2842 | PL_stack_sp = PL_stack_base + markix; | |
2843 | } | |
2844 | } | |
2845 | LEAVE; | |
2846 | return NORMAL; | |
2847 | } | |
2848 | ||
2849 | assert (0); /* Cannot get here. */ | |
2850 | /* This is deliberately moved here as spaghetti code to keep it out of the | |
2851 | hot path. */ | |
2852 | { | |
2853 | GV* autogv; | |
2854 | SV* sub_name; | |
2855 | ||
2856 | fooey: | |
2857 | /* anonymous or undef'd function leaves us no recourse */ | |
2858 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
2859 | DIE(aTHX_ "Undefined subroutine called"); | |
2860 | ||
2861 | /* autoloaded stub? */ | |
2862 | if (cv != GvCV(gv)) { | |
2863 | cv = GvCV(gv); | |
2864 | } | |
2865 | /* should call AUTOLOAD now? */ | |
2866 | else { | |
2867 | try_autoload: | |
2868 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), | |
2869 | FALSE))) | |
2870 | { | |
2871 | cv = GvCV(autogv); | |
2872 | } | |
2873 | /* sorry */ | |
2874 | else { | |
2875 | sub_name = sv_newmortal(); | |
2876 | gv_efullname3(sub_name, gv, Nullch); | |
35c1215d | 2877 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", sub_name); |
f1025168 NC |
2878 | } |
2879 | } | |
2880 | if (!cv) | |
2881 | DIE(aTHX_ "Not a CODE reference"); | |
2882 | goto retry; | |
2883 | } | |
a0d0e21e LW |
2884 | } |
2885 | ||
44a8e56a | 2886 | void |
864dbfa3 | 2887 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2888 | { |
2889 | if (CvANON(cv)) | |
9014280d | 2890 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 2891 | else { |
2892 | SV* tmpstr = sv_newmortal(); | |
2893 | gv_efullname3(tmpstr, CvGV(cv), Nullch); | |
35c1215d NC |
2894 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
2895 | tmpstr); | |
44a8e56a | 2896 | } |
2897 | } | |
2898 | ||
a0d0e21e LW |
2899 | PP(pp_aelem) |
2900 | { | |
39644a26 | 2901 | dSP; |
a0d0e21e | 2902 | SV** svp; |
d804643f SC |
2903 | SV* elemsv = POPs; |
2904 | IV elem = SvIV(elemsv); | |
68dc0745 | 2905 | AV* av = (AV*)POPs; |
78f9721b | 2906 | U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
533c011a | 2907 | U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av)); |
be6c24e0 | 2908 | SV *sv; |
a0d0e21e | 2909 | |
e35c1634 | 2910 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
35c1215d | 2911 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Use of reference \"%"SVf"\" as array index", elemsv); |
748a9306 | 2912 | if (elem > 0) |
3280af22 | 2913 | elem -= PL_curcop->cop_arybase; |
a0d0e21e LW |
2914 | if (SvTYPE(av) != SVt_PVAV) |
2915 | RETPUSHUNDEF; | |
68dc0745 | 2916 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2917 | if (lval) { |
2b573ace JH |
2918 | #ifdef PERL_MALLOC_WRAP |
2919 | static const char oom_array_extend[] = | |
2920 | "Out of memory during array extend"; /* Duplicated in av.c */ | |
2921 | if (SvUOK(elemsv)) { | |
2922 | UV uv = SvUV(elemsv); | |
2923 | elem = uv > IV_MAX ? IV_MAX : uv; | |
2924 | } | |
2925 | else if (SvNOK(elemsv)) | |
2926 | elem = (IV)SvNV(elemsv); | |
2927 | if (elem > 0) | |
2928 | MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend); | |
2929 | #endif | |
3280af22 | 2930 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 2931 | SV* lv; |
2932 | if (!defer) | |
cea2e8a9 | 2933 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 2934 | lv = sv_newmortal(); |
2935 | sv_upgrade(lv, SVt_PVLV); | |
2936 | LvTYPE(lv) = 'y'; | |
14befaf4 | 2937 | sv_magic(lv, Nullsv, PERL_MAGIC_defelem, Nullch, 0); |
68dc0745 | 2938 | LvTARG(lv) = SvREFCNT_inc(av); |
2939 | LvTARGOFF(lv) = elem; | |
2940 | LvTARGLEN(lv) = 1; | |
2941 | PUSHs(lv); | |
2942 | RETURN; | |
2943 | } | |
bfc4de9f | 2944 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 | 2945 | save_aelem(av, elem, svp); |
533c011a NIS |
2946 | else if (PL_op->op_private & OPpDEREF) |
2947 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 2948 | } |
3280af22 | 2949 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
2950 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2951 | sv = sv_mortalcopy(sv); | |
2952 | PUSHs(sv); | |
a0d0e21e LW |
2953 | RETURN; |
2954 | } | |
2955 | ||
02a9e968 | 2956 | void |
864dbfa3 | 2957 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 CS |
2958 | { |
2959 | if (SvGMAGICAL(sv)) | |
2960 | mg_get(sv); | |
2961 | if (!SvOK(sv)) { | |
2962 | if (SvREADONLY(sv)) | |
cea2e8a9 | 2963 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc | 2964 | if (SvTYPE(sv) < SVt_RV) |
2965 | sv_upgrade(sv, SVt_RV); | |
2966 | else if (SvTYPE(sv) >= SVt_PV) { | |
2967 | (void)SvOOK_off(sv); | |
2968 | Safefree(SvPVX(sv)); | |
2969 | SvLEN(sv) = SvCUR(sv) = 0; | |
2970 | } | |
68dc0745 | 2971 | switch (to_what) { |
5f05dabc | 2972 | case OPpDEREF_SV: |
8c52afec | 2973 | SvRV(sv) = NEWSV(355,0); |
5f05dabc | 2974 | break; |
2975 | case OPpDEREF_AV: | |
2976 | SvRV(sv) = (SV*)newAV(); | |
2977 | break; | |
2978 | case OPpDEREF_HV: | |
2979 | SvRV(sv) = (SV*)newHV(); | |
2980 | break; | |
2981 | } | |
02a9e968 CS |
2982 | SvROK_on(sv); |
2983 | SvSETMAGIC(sv); | |
2984 | } | |
2985 | } | |
2986 | ||
a0d0e21e LW |
2987 | PP(pp_method) |
2988 | { | |
39644a26 | 2989 | dSP; |
f5d5a27c CS |
2990 | SV* sv = TOPs; |
2991 | ||
2992 | if (SvROK(sv)) { | |
eda383f2 | 2993 | SV* rsv = SvRV(sv); |
f5d5a27c CS |
2994 | if (SvTYPE(rsv) == SVt_PVCV) { |
2995 | SETs(rsv); | |
2996 | RETURN; | |
2997 | } | |
2998 | } | |
2999 | ||
3000 | SETs(method_common(sv, Null(U32*))); | |
3001 | RETURN; | |
3002 | } | |
3003 | ||
3004 | PP(pp_method_named) | |
3005 | { | |
39644a26 | 3006 | dSP; |
3848b962 | 3007 | SV* sv = cSVOP_sv; |
f5d5a27c CS |
3008 | U32 hash = SvUVX(sv); |
3009 | ||
3010 | XPUSHs(method_common(sv, &hash)); | |
3011 | RETURN; | |
3012 | } | |
3013 | ||
3014 | STATIC SV * | |
3015 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
3016 | { | |
a0d0e21e LW |
3017 | SV* sv; |
3018 | SV* ob; | |
3019 | GV* gv; | |
56304f61 CS |
3020 | HV* stash; |
3021 | char* name; | |
f5d5a27c | 3022 | STRLEN namelen; |
9c5ffd7c | 3023 | char* packname = 0; |
0dae17bd | 3024 | SV *packsv = Nullsv; |
ac91690f | 3025 | STRLEN packlen; |
a0d0e21e | 3026 | |
f5d5a27c | 3027 | name = SvPV(meth, namelen); |
3280af22 | 3028 | sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c | 3029 | |
4f1b7578 SC |
3030 | if (!sv) |
3031 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); | |
3032 | ||
16d20bd9 | 3033 | if (SvGMAGICAL(sv)) |
af09ea45 | 3034 | mg_get(sv); |
a0d0e21e | 3035 | if (SvROK(sv)) |
16d20bd9 | 3036 | ob = (SV*)SvRV(sv); |
a0d0e21e LW |
3037 | else { |
3038 | GV* iogv; | |
a0d0e21e | 3039 | |
af09ea45 | 3040 | /* this isn't a reference */ |
56304f61 | 3041 | packname = Nullch; |
081fc587 AB |
3042 | |
3043 | if(SvOK(sv) && (packname = SvPV(sv, packlen))) { | |
7e8961ec AB |
3044 | HE* he; |
3045 | he = hv_fetch_ent(PL_stashcache, sv, 0, 0); | |
081fc587 | 3046 | if (he) { |
5e6396ae | 3047 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
081fc587 AB |
3048 | goto fetch; |
3049 | } | |
3050 | } | |
3051 | ||
a0d0e21e | 3052 | if (!SvOK(sv) || |
05f5af9a | 3053 | !(packname) || |
a0d0e21e LW |
3054 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || |
3055 | !(ob=(SV*)GvIO(iogv))) | |
3056 | { | |
af09ea45 | 3057 | /* this isn't the name of a filehandle either */ |
1c846c1f | 3058 | if (!packname || |
fd400ab9 | 3059 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 3060 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
3061 | : !isIDFIRST(*packname) |
3062 | )) | |
3063 | { | |
f5d5a27c CS |
3064 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
3065 | SvOK(sv) ? "without a package or object reference" | |
3066 | : "on an undefined value"); | |
834a4ddd | 3067 | } |
af09ea45 IK |
3068 | /* assume it's a package name */ |
3069 | stash = gv_stashpvn(packname, packlen, FALSE); | |
0dae17bd GS |
3070 | if (!stash) |
3071 | packsv = sv; | |
081fc587 | 3072 | else { |
5e6396ae | 3073 | SV* ref = newSViv(PTR2IV(stash)); |
7e8961ec AB |
3074 | hv_store(PL_stashcache, packname, packlen, ref, 0); |
3075 | } | |
ac91690f | 3076 | goto fetch; |
a0d0e21e | 3077 | } |
af09ea45 | 3078 | /* it _is_ a filehandle name -- replace with a reference */ |
3280af22 | 3079 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e LW |
3080 | } |
3081 | ||
af09ea45 | 3082 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 GS |
3083 | if (!ob || !(SvOBJECT(ob) |
3084 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) | |
3085 | && SvOBJECT(ob)))) | |
3086 | { | |
f5d5a27c CS |
3087 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
3088 | name); | |
f0d43078 | 3089 | } |
a0d0e21e | 3090 | |
56304f61 | 3091 | stash = SvSTASH(ob); |
a0d0e21e | 3092 | |
ac91690f | 3093 | fetch: |
af09ea45 IK |
3094 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3095 | gv_fetchmethod can cope (it seems they can) */ | |
3096 | ||
f5d5a27c CS |
3097 | /* shortcut for simple names */ |
3098 | if (hashp) { | |
3099 | HE* he = hv_fetch_ent(stash, meth, 0, *hashp); | |
3100 | if (he) { | |
3101 | gv = (GV*)HeVAL(he); | |
3102 | if (isGV(gv) && GvCV(gv) && | |
3103 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) | |
3104 | return (SV*)GvCV(gv); | |
3105 | } | |
3106 | } | |
3107 | ||
0dae17bd | 3108 | gv = gv_fetchmethod(stash ? stash : (HV*)packsv, name); |
af09ea45 | 3109 | |
56304f61 | 3110 | if (!gv) { |
af09ea45 IK |
3111 | /* This code tries to figure out just what went wrong with |
3112 | gv_fetchmethod. It therefore needs to duplicate a lot of | |
3113 | the internals of that function. We can't move it inside | |
3114 | Perl_gv_fetchmethod_autoload(), however, since that would | |
3115 | cause UNIVERSAL->can("NoSuchPackage::foo") to croak, and we | |
3116 | don't want that. | |
3117 | */ | |
56304f61 CS |
3118 | char* leaf = name; |
3119 | char* sep = Nullch; | |
3120 | char* p; | |
3121 | ||
3122 | for (p = name; *p; p++) { | |
3123 | if (*p == '\'') | |
3124 | sep = p, leaf = p + 1; | |
3125 | else if (*p == ':' && *(p + 1) == ':') | |
3126 | sep = p, leaf = p + 2; | |
3127 | } | |
3128 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { | |
af09ea45 IK |
3129 | /* the method name is unqualified or starts with SUPER:: */ |
3130 | packname = sep ? CopSTASHPV(PL_curcop) : | |
3131 | stash ? HvNAME(stash) : packname; | |
e27ad1f2 AV |
3132 | if (!packname) |
3133 | Perl_croak(aTHX_ | |
3134 | "Can't use anonymous symbol table for method lookup"); | |
3135 | else | |
3136 | packlen = strlen(packname); | |
56304f61 CS |
3137 | } |
3138 | else { | |
af09ea45 | 3139 | /* the method name is qualified */ |
56304f61 CS |
3140 | packname = name; |
3141 | packlen = sep - name; | |
3142 | } | |
af09ea45 IK |
3143 | |
3144 | /* we're relying on gv_fetchmethod not autovivifying the stash */ | |
3145 | if (gv_stashpvn(packname, packlen, FALSE)) { | |
c1899e02 | 3146 | Perl_croak(aTHX_ |
af09ea45 IK |
3147 | "Can't locate object method \"%s\" via package \"%.*s\"", |
3148 | leaf, (int)packlen, packname); | |
c1899e02 GS |
3149 | } |
3150 | else { | |
3151 | Perl_croak(aTHX_ | |
af09ea45 IK |
3152 | "Can't locate object method \"%s\" via package \"%.*s\"" |
3153 | " (perhaps you forgot to load \"%.*s\"?)", | |
3154 | leaf, (int)packlen, packname, (int)packlen, packname); | |
c1899e02 | 3155 | } |
56304f61 | 3156 | } |
f5d5a27c | 3157 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e | 3158 | } |