Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
fdf8c088 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 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 | { | |
97aff369 | 40 | dVAR; |
39644a26 | 41 | dSP; |
1d7c1841 | 42 | XPUSHs(cSVOP_sv); |
a0d0e21e LW |
43 | RETURN; |
44 | } | |
45 | ||
46 | PP(pp_nextstate) | |
47 | { | |
97aff369 | 48 | dVAR; |
533c011a | 49 | PL_curcop = (COP*)PL_op; |
a0d0e21e | 50 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 51 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e LW |
52 | FREETMPS; |
53 | return NORMAL; | |
54 | } | |
55 | ||
56 | PP(pp_gvsv) | |
57 | { | |
97aff369 | 58 | dVAR; |
39644a26 | 59 | dSP; |
924508f0 | 60 | EXTEND(SP,1); |
533c011a | 61 | if (PL_op->op_private & OPpLVAL_INTRO) |
1d7c1841 | 62 | PUSHs(save_scalar(cGVOP_gv)); |
a0d0e21e | 63 | else |
c69033f2 | 64 | PUSHs(GvSVn(cGVOP_gv)); |
a0d0e21e LW |
65 | RETURN; |
66 | } | |
67 | ||
68 | PP(pp_null) | |
69 | { | |
97aff369 | 70 | dVAR; |
a0d0e21e LW |
71 | return NORMAL; |
72 | } | |
73 | ||
7399586d HS |
74 | PP(pp_setstate) |
75 | { | |
97aff369 | 76 | dVAR; |
7399586d HS |
77 | PL_curcop = (COP*)PL_op; |
78 | return NORMAL; | |
79 | } | |
80 | ||
a0d0e21e LW |
81 | PP(pp_pushmark) |
82 | { | |
97aff369 | 83 | dVAR; |
3280af22 | 84 | PUSHMARK(PL_stack_sp); |
a0d0e21e LW |
85 | return NORMAL; |
86 | } | |
87 | ||
88 | PP(pp_stringify) | |
89 | { | |
97aff369 | 90 | dVAR; dSP; dTARGET; |
6050d10e | 91 | sv_copypv(TARG,TOPs); |
a0d0e21e LW |
92 | SETTARG; |
93 | RETURN; | |
94 | } | |
95 | ||
96 | PP(pp_gv) | |
97 | { | |
97aff369 | 98 | dVAR; dSP; |
1d7c1841 | 99 | XPUSHs((SV*)cGVOP_gv); |
a0d0e21e LW |
100 | RETURN; |
101 | } | |
102 | ||
103 | PP(pp_and) | |
104 | { | |
97aff369 | 105 | dVAR; dSP; |
a0d0e21e LW |
106 | if (!SvTRUE(TOPs)) |
107 | RETURN; | |
108 | else { | |
c960fc3b SP |
109 | if (PL_op->op_type == OP_AND) |
110 | --SP; | |
a0d0e21e LW |
111 | RETURNOP(cLOGOP->op_other); |
112 | } | |
113 | } | |
114 | ||
115 | PP(pp_sassign) | |
116 | { | |
97aff369 | 117 | dVAR; dSP; dPOPTOPssrl; |
748a9306 | 118 | |
533c011a | 119 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
0bd48802 AL |
120 | SV * const temp = left; |
121 | left = right; right = temp; | |
a0d0e21e | 122 | } |
952306ac RGS |
123 | else if (PL_op->op_private & OPpASSIGN_STATE) { |
124 | if (SvPADSTALE(right)) | |
125 | SvPADSTALE_off(right); | |
126 | else | |
127 | RETURN; /* ignore assignment */ | |
128 | } | |
3280af22 | 129 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e | 130 | TAINT_NOT; |
e26df76a | 131 | if (PL_op->op_private & OPpASSIGN_CV_TO_GV) { |
6136c704 | 132 | SV * const cv = SvRV(left); |
e26df76a NC |
133 | const U32 cv_type = SvTYPE(cv); |
134 | const U32 gv_type = SvTYPE(right); | |
6136c704 | 135 | const bool got_coderef = cv_type == SVt_PVCV || cv_type == SVt_PVFM; |
e26df76a NC |
136 | |
137 | if (!got_coderef) { | |
138 | assert(SvROK(cv)); | |
139 | } | |
140 | ||
ae6d515f | 141 | /* Can do the optimisation if right (LVALUE) is not a typeglob, |
e26df76a NC |
142 | left (RVALUE) is a reference to something, and we're in void |
143 | context. */ | |
144 | if (!got_coderef && gv_type != SVt_PVGV && GIMME_V == G_VOID) { | |
145 | /* Is the target symbol table currently empty? */ | |
6136c704 | 146 | GV * const gv = gv_fetchsv(right, GV_NOINIT, SVt_PVGV); |
bb112e5a | 147 | if (SvTYPE(gv) != SVt_PVGV && !SvOK(gv)) { |
e26df76a NC |
148 | /* Good. Create a new proxy constant subroutine in the target. |
149 | The gv becomes a(nother) reference to the constant. */ | |
150 | SV *const value = SvRV(cv); | |
151 | ||
152 | SvUPGRADE((SV *)gv, SVt_RV); | |
1ccdb730 | 153 | SvPCS_IMPORTED_on(gv); |
e26df76a | 154 | SvRV_set(gv, value); |
b37c2d43 | 155 | SvREFCNT_inc_simple_void(value); |
e26df76a NC |
156 | SETs(right); |
157 | RETURN; | |
158 | } | |
159 | } | |
160 | ||
161 | /* Need to fix things up. */ | |
162 | if (gv_type != SVt_PVGV) { | |
163 | /* Need to fix GV. */ | |
164 | right = (SV*)gv_fetchsv(right, GV_ADD, SVt_PVGV); | |
165 | } | |
166 | ||
167 | if (!got_coderef) { | |
168 | /* We've been returned a constant rather than a full subroutine, | |
169 | but they expect a subroutine reference to apply. */ | |
170 | ENTER; | |
b37c2d43 | 171 | SvREFCNT_inc_void(SvRV(cv)); |
e26df76a NC |
172 | /* newCONSTSUB takes a reference count on the passed in SV |
173 | from us. We set the name to NULL, otherwise we get into | |
174 | all sorts of fun as the reference to our new sub is | |
175 | donated to the GV that we're about to assign to. | |
176 | */ | |
177 | SvRV_set(left, (SV *)newCONSTSUB(GvSTASH(right), NULL, | |
178 | SvRV(cv))); | |
179 | SvREFCNT_dec(cv); | |
180 | LEAVE; | |
e26df76a NC |
181 | } |
182 | ||
ae6d515f RGS |
183 | if (strEQ(GvNAME(right),"isa")) { |
184 | GvCVGEN(right) = 0; | |
185 | ++PL_sub_generation; | |
186 | } | |
e26df76a | 187 | } |
54310121 | 188 | SvSetMagicSV(right, left); |
a0d0e21e LW |
189 | SETs(right); |
190 | RETURN; | |
191 | } | |
192 | ||
193 | PP(pp_cond_expr) | |
194 | { | |
97aff369 | 195 | dVAR; dSP; |
a0d0e21e | 196 | if (SvTRUEx(POPs)) |
1a67a97c | 197 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 198 | else |
1a67a97c | 199 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
200 | } |
201 | ||
202 | PP(pp_unstack) | |
203 | { | |
97aff369 | 204 | dVAR; |
a0d0e21e LW |
205 | I32 oldsave; |
206 | TAINT_NOT; /* Each statement is presumed innocent */ | |
3280af22 | 207 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 208 | FREETMPS; |
3280af22 | 209 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
210 | LEAVE_SCOPE(oldsave); |
211 | return NORMAL; | |
212 | } | |
213 | ||
a0d0e21e LW |
214 | PP(pp_concat) |
215 | { | |
97aff369 | 216 | dVAR; dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 LW |
217 | { |
218 | dPOPTOPssrl; | |
8d6d96c1 HS |
219 | bool lbyte; |
220 | STRLEN rlen; | |
d4c19fe8 | 221 | const char *rpv = NULL; |
a6b599c7 | 222 | bool rbyte = FALSE; |
a9c4fd4e | 223 | bool rcopied = FALSE; |
8d6d96c1 HS |
224 | |
225 | if (TARG == right && right != left) { | |
c75ab21a RH |
226 | /* mg_get(right) may happen here ... */ |
227 | rpv = SvPV_const(right, rlen); | |
228 | rbyte = !DO_UTF8(right); | |
8d6d96c1 | 229 | right = sv_2mortal(newSVpvn(rpv, rlen)); |
349d4f2f | 230 | rpv = SvPV_const(right, rlen); /* no point setting UTF-8 here */ |
db79b45b | 231 | rcopied = TRUE; |
8d6d96c1 | 232 | } |
7889fe52 | 233 | |
8d6d96c1 | 234 | if (TARG != left) { |
a9c4fd4e | 235 | STRLEN llen; |
5c144d81 | 236 | const char* const lpv = SvPV_const(left, llen); /* mg_get(left) may happen here */ |
90f5826e | 237 | lbyte = !DO_UTF8(left); |
8d6d96c1 HS |
238 | sv_setpvn(TARG, lpv, llen); |
239 | if (!lbyte) | |
240 | SvUTF8_on(TARG); | |
241 | else | |
242 | SvUTF8_off(TARG); | |
243 | } | |
244 | else { /* TARG == left */ | |
a9c4fd4e | 245 | STRLEN llen; |
5b295bef | 246 | SvGETMAGIC(left); /* or mg_get(left) may happen here */ |
c75ab21a RH |
247 | if (!SvOK(TARG)) { |
248 | if (left == right && ckWARN(WARN_UNINITIALIZED)) | |
249 | report_uninit(right); | |
c69006e4 | 250 | sv_setpvn(left, "", 0); |
c75ab21a | 251 | } |
10516c54 | 252 | (void)SvPV_nomg_const(left, llen); /* Needed to set UTF8 flag */ |
90f5826e TS |
253 | lbyte = !DO_UTF8(left); |
254 | if (IN_BYTES) | |
255 | SvUTF8_off(TARG); | |
8d6d96c1 | 256 | } |
a12c0f56 | 257 | |
c75ab21a RH |
258 | /* or mg_get(right) may happen here */ |
259 | if (!rcopied) { | |
260 | rpv = SvPV_const(right, rlen); | |
261 | rbyte = !DO_UTF8(right); | |
262 | } | |
8d6d96c1 HS |
263 | if (lbyte != rbyte) { |
264 | if (lbyte) | |
265 | sv_utf8_upgrade_nomg(TARG); | |
266 | else { | |
db79b45b JH |
267 | if (!rcopied) |
268 | right = sv_2mortal(newSVpvn(rpv, rlen)); | |
8d6d96c1 | 269 | sv_utf8_upgrade_nomg(right); |
349d4f2f | 270 | rpv = SvPV_const(right, rlen); |
69b47968 | 271 | } |
a0d0e21e | 272 | } |
8d6d96c1 | 273 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 274 | |
a0d0e21e LW |
275 | SETTARG; |
276 | RETURN; | |
748a9306 | 277 | } |
a0d0e21e LW |
278 | } |
279 | ||
280 | PP(pp_padsv) | |
281 | { | |
97aff369 | 282 | dVAR; dSP; dTARGET; |
a0d0e21e | 283 | XPUSHs(TARG); |
533c011a NIS |
284 | if (PL_op->op_flags & OPf_MOD) { |
285 | if (PL_op->op_private & OPpLVAL_INTRO) | |
952306ac RGS |
286 | if (!(PL_op->op_private & OPpPAD_STATE)) |
287 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); | |
a62b51b8 | 288 | if (PL_op->op_private & OPpDEREF) { |
8ec5e241 | 289 | PUTBACK; |
dd2155a4 | 290 | vivify_ref(PAD_SVl(PL_op->op_targ), PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
291 | SPAGAIN; |
292 | } | |
4633a7c4 | 293 | } |
a0d0e21e LW |
294 | RETURN; |
295 | } | |
296 | ||
297 | PP(pp_readline) | |
298 | { | |
97aff369 | 299 | dVAR; |
f5284f61 | 300 | tryAMAGICunTARGET(iter, 0); |
3280af22 | 301 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 | 302 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f | 303 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 | 304 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 | 305 | else { |
f5284f61 IZ |
306 | dSP; |
307 | XPUSHs((SV*)PL_last_in_gv); | |
308 | PUTBACK; | |
cea2e8a9 | 309 | pp_rv2gv(); |
f5284f61 | 310 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 IZ |
311 | } |
312 | } | |
a0d0e21e LW |
313 | return do_readline(); |
314 | } | |
315 | ||
316 | PP(pp_eq) | |
317 | { | |
97aff369 | 318 | dVAR; dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f | 319 | #ifndef NV_PRESERVES_UV |
0bdaccee | 320 | if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) { |
e61d22ef NC |
321 | SP--; |
322 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); | |
4c9fe80f AS |
323 | RETURN; |
324 | } | |
325 | #endif | |
28e5dec8 JH |
326 | #ifdef PERL_PRESERVE_IVUV |
327 | SvIV_please(TOPs); | |
328 | if (SvIOK(TOPs)) { | |
4c9fe80f AS |
329 | /* Unless the left argument is integer in range we are going |
330 | to have to use NV maths. Hence only attempt to coerce the | |
331 | right argument if we know the left is integer. */ | |
28e5dec8 JH |
332 | SvIV_please(TOPm1s); |
333 | if (SvIOK(TOPm1s)) { | |
0bd48802 AL |
334 | const bool auvok = SvUOK(TOPm1s); |
335 | const bool buvok = SvUOK(TOPs); | |
a12c0f56 | 336 | |
1605159e NC |
337 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
338 | /* Casting IV to UV before comparison isn't going to matter | |
339 | on 2s complement. On 1s complement or sign&magnitude | |
340 | (if we have any of them) it could to make negative zero | |
341 | differ from normal zero. As I understand it. (Need to | |
342 | check - is negative zero implementation defined behaviour | |
343 | anyway?). NWC */ | |
0bd48802 AL |
344 | const UV buv = SvUVX(POPs); |
345 | const UV auv = SvUVX(TOPs); | |
28e5dec8 | 346 | |
28e5dec8 JH |
347 | SETs(boolSV(auv == buv)); |
348 | RETURN; | |
349 | } | |
350 | { /* ## Mixed IV,UV ## */ | |
1605159e | 351 | SV *ivp, *uvp; |
28e5dec8 | 352 | IV iv; |
28e5dec8 | 353 | |
1605159e | 354 | /* == is commutative so doesn't matter which is left or right */ |
28e5dec8 | 355 | if (auvok) { |
1605159e NC |
356 | /* top of stack (b) is the iv */ |
357 | ivp = *SP; | |
358 | uvp = *--SP; | |
359 | } else { | |
360 | uvp = *SP; | |
361 | ivp = *--SP; | |
362 | } | |
363 | iv = SvIVX(ivp); | |
d4c19fe8 | 364 | if (iv < 0) |
1605159e NC |
365 | /* As uv is a UV, it's >0, so it cannot be == */ |
366 | SETs(&PL_sv_no); | |
d4c19fe8 AL |
367 | else |
368 | /* we know iv is >= 0 */ | |
369 | SETs(boolSV((UV)iv == SvUVX(uvp))); | |
28e5dec8 JH |
370 | RETURN; |
371 | } | |
372 | } | |
373 | } | |
374 | #endif | |
a0d0e21e | 375 | { |
cab190d4 JD |
376 | #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan) |
377 | dPOPTOPnnrl; | |
378 | if (Perl_isnan(left) || Perl_isnan(right)) | |
379 | RETSETNO; | |
380 | SETs(boolSV(left == right)); | |
381 | #else | |
a0d0e21e | 382 | dPOPnv; |
54310121 | 383 | SETs(boolSV(TOPn == value)); |
cab190d4 | 384 | #endif |
a0d0e21e LW |
385 | RETURN; |
386 | } | |
387 | } | |
388 | ||
389 | PP(pp_preinc) | |
390 | { | |
97aff369 | 391 | dVAR; dSP; |
f39684df | 392 | if (SvTYPE(TOPs) >= SVt_PVGV && SvTYPE(TOPs) != SVt_PVLV) |
d470f89e | 393 | DIE(aTHX_ PL_no_modify); |
3510b4a1 NC |
394 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
395 | && SvIVX(TOPs) != IV_MAX) | |
55497cff | 396 | { |
45977657 | 397 | SvIV_set(TOPs, SvIVX(TOPs) + 1); |
55497cff | 398 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 399 | } |
28e5dec8 | 400 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 | 401 | sv_inc(TOPs); |
a0d0e21e LW |
402 | SvSETMAGIC(TOPs); |
403 | return NORMAL; | |
404 | } | |
405 | ||
406 | PP(pp_or) | |
407 | { | |
97aff369 | 408 | dVAR; dSP; |
a0d0e21e LW |
409 | if (SvTRUE(TOPs)) |
410 | RETURN; | |
411 | else { | |
c960fc3b SP |
412 | if (PL_op->op_type == OP_OR) |
413 | --SP; | |
a0d0e21e LW |
414 | RETURNOP(cLOGOP->op_other); |
415 | } | |
416 | } | |
417 | ||
25a55bd7 | 418 | PP(pp_defined) |
c963b151 | 419 | { |
97aff369 | 420 | dVAR; dSP; |
6136c704 AL |
421 | register SV* sv; |
422 | bool defined; | |
25a55bd7 | 423 | const int op_type = PL_op->op_type; |
ea5195b7 | 424 | const bool is_dor = (op_type == OP_DOR || op_type == OP_DORASSIGN); |
c963b151 | 425 | |
6136c704 | 426 | if (is_dor) { |
25a55bd7 SP |
427 | sv = TOPs; |
428 | if (!sv || !SvANY(sv)) { | |
2bd49cfc NC |
429 | if (op_type == OP_DOR) |
430 | --SP; | |
25a55bd7 SP |
431 | RETURNOP(cLOGOP->op_other); |
432 | } | |
433 | } else if (op_type == OP_DEFINED) { | |
434 | sv = POPs; | |
435 | if (!sv || !SvANY(sv)) | |
436 | RETPUSHNO; | |
d9aa96a4 | 437 | } else |
52a5c517 | 438 | DIE(aTHX_ "panic: Invalid op (%s) in pp_defined()", OP_NAME(PL_op)); |
25a55bd7 | 439 | |
6136c704 | 440 | defined = FALSE; |
c963b151 BD |
441 | switch (SvTYPE(sv)) { |
442 | case SVt_PVAV: | |
443 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 444 | defined = TRUE; |
c963b151 BD |
445 | break; |
446 | case SVt_PVHV: | |
447 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 448 | defined = TRUE; |
c963b151 BD |
449 | break; |
450 | case SVt_PVCV: | |
451 | if (CvROOT(sv) || CvXSUB(sv)) | |
25a55bd7 | 452 | defined = TRUE; |
c963b151 BD |
453 | break; |
454 | default: | |
5b295bef | 455 | SvGETMAGIC(sv); |
c963b151 | 456 | if (SvOK(sv)) |
25a55bd7 | 457 | defined = TRUE; |
6136c704 | 458 | break; |
c963b151 | 459 | } |
6136c704 AL |
460 | |
461 | if (is_dor) { | |
c960fc3b SP |
462 | if(defined) |
463 | RETURN; | |
464 | if(op_type == OP_DOR) | |
465 | --SP; | |
25a55bd7 | 466 | RETURNOP(cLOGOP->op_other); |
25a55bd7 | 467 | } |
d9aa96a4 SP |
468 | /* assuming OP_DEFINED */ |
469 | if(defined) | |
470 | RETPUSHYES; | |
471 | RETPUSHNO; | |
c963b151 BD |
472 | } |
473 | ||
a0d0e21e LW |
474 | PP(pp_add) |
475 | { | |
97aff369 | 476 | dVAR; dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 JH |
477 | useleft = USE_LEFT(TOPm1s); |
478 | #ifdef PERL_PRESERVE_IVUV | |
479 | /* We must see if we can perform the addition with integers if possible, | |
480 | as the integer code detects overflow while the NV code doesn't. | |
481 | If either argument hasn't had a numeric conversion yet attempt to get | |
482 | the IV. It's important to do this now, rather than just assuming that | |
483 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
484 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
485 | integer in case the second argument is IV=9223372036854775806 | |
486 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
487 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
488 | ||
489 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
490 | fp maths for integer values. |
491 | ||
a00b5bd3 | 492 | How to detect overflow? |
7dca457a NC |
493 | |
494 | C 99 section 6.2.6.1 says | |
495 | ||
496 | The range of nonnegative values of a signed integer type is a subrange | |
497 | of the corresponding unsigned integer type, and the representation of | |
498 | the same value in each type is the same. A computation involving | |
499 | unsigned operands can never overflow, because a result that cannot be | |
500 | represented by the resulting unsigned integer type is reduced modulo | |
501 | the number that is one greater than the largest value that can be | |
502 | represented by the resulting type. | |
503 | ||
504 | (the 9th paragraph) | |
505 | ||
506 | which I read as "unsigned ints wrap." | |
507 | ||
508 | signed integer overflow seems to be classed as "exception condition" | |
509 | ||
510 | If an exceptional condition occurs during the evaluation of an | |
511 | expression (that is, if the result is not mathematically defined or not | |
512 | in the range of representable values for its type), the behavior is | |
513 | undefined. | |
514 | ||
515 | (6.5, the 5th paragraph) | |
516 | ||
517 | I had assumed that on 2s complement machines signed arithmetic would | |
518 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
519 | everything perl builds on would be happy. After much wailing and | |
520 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
521 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
522 | unsigned code below is actually shorter than the old code. :-) | |
523 | */ | |
524 | ||
28e5dec8 JH |
525 | SvIV_please(TOPs); |
526 | if (SvIOK(TOPs)) { | |
527 | /* Unless the left argument is integer in range we are going to have to | |
528 | use NV maths. Hence only attempt to coerce the right argument if | |
529 | we know the left is integer. */ | |
9c5ffd7c JH |
530 | register UV auv = 0; |
531 | bool auvok = FALSE; | |
7dca457a NC |
532 | bool a_valid = 0; |
533 | ||
28e5dec8 | 534 | if (!useleft) { |
7dca457a NC |
535 | auv = 0; |
536 | a_valid = auvok = 1; | |
537 | /* left operand is undef, treat as zero. + 0 is identity, | |
538 | Could SETi or SETu right now, but space optimise by not adding | |
539 | lots of code to speed up what is probably a rarish case. */ | |
540 | } else { | |
541 | /* Left operand is defined, so is it IV? */ | |
542 | SvIV_please(TOPm1s); | |
543 | if (SvIOK(TOPm1s)) { | |
544 | if ((auvok = SvUOK(TOPm1s))) | |
545 | auv = SvUVX(TOPm1s); | |
546 | else { | |
a3b680e6 | 547 | register const IV aiv = SvIVX(TOPm1s); |
7dca457a NC |
548 | if (aiv >= 0) { |
549 | auv = aiv; | |
550 | auvok = 1; /* Now acting as a sign flag. */ | |
551 | } else { /* 2s complement assumption for IV_MIN */ | |
552 | auv = (UV)-aiv; | |
553 | } | |
554 | } | |
555 | a_valid = 1; | |
28e5dec8 JH |
556 | } |
557 | } | |
7dca457a NC |
558 | if (a_valid) { |
559 | bool result_good = 0; | |
560 | UV result; | |
561 | register UV buv; | |
28e5dec8 | 562 | bool buvok = SvUOK(TOPs); |
a00b5bd3 | 563 | |
7dca457a NC |
564 | if (buvok) |
565 | buv = SvUVX(TOPs); | |
566 | else { | |
a3b680e6 | 567 | register const IV biv = SvIVX(TOPs); |
7dca457a NC |
568 | if (biv >= 0) { |
569 | buv = biv; | |
570 | buvok = 1; | |
571 | } else | |
572 | buv = (UV)-biv; | |
573 | } | |
574 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 575 | else "IV" now, independent of how it came in. |
7dca457a NC |
576 | if a, b represents positive, A, B negative, a maps to -A etc |
577 | a + b => (a + b) | |
578 | A + b => -(a - b) | |
579 | a + B => (a - b) | |
580 | A + B => -(a + b) | |
581 | all UV maths. negate result if A negative. | |
582 | add if signs same, subtract if signs differ. */ | |
583 | ||
584 | if (auvok ^ buvok) { | |
585 | /* Signs differ. */ | |
586 | if (auv >= buv) { | |
587 | result = auv - buv; | |
588 | /* Must get smaller */ | |
589 | if (result <= auv) | |
590 | result_good = 1; | |
591 | } else { | |
592 | result = buv - auv; | |
593 | if (result <= buv) { | |
594 | /* result really should be -(auv-buv). as its negation | |
595 | of true value, need to swap our result flag */ | |
596 | auvok = !auvok; | |
597 | result_good = 1; | |
28e5dec8 JH |
598 | } |
599 | } | |
7dca457a NC |
600 | } else { |
601 | /* Signs same */ | |
602 | result = auv + buv; | |
603 | if (result >= auv) | |
604 | result_good = 1; | |
605 | } | |
606 | if (result_good) { | |
607 | SP--; | |
608 | if (auvok) | |
28e5dec8 | 609 | SETu( result ); |
7dca457a NC |
610 | else { |
611 | /* Negate result */ | |
612 | if (result <= (UV)IV_MIN) | |
613 | SETi( -(IV)result ); | |
614 | else { | |
615 | /* result valid, but out of range for IV. */ | |
616 | SETn( -(NV)result ); | |
28e5dec8 JH |
617 | } |
618 | } | |
7dca457a NC |
619 | RETURN; |
620 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
621 | } |
622 | } | |
623 | #endif | |
a0d0e21e | 624 | { |
28e5dec8 JH |
625 | dPOPnv; |
626 | if (!useleft) { | |
627 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
628 | SETn(value); | |
629 | RETURN; | |
630 | } | |
631 | SETn( value + TOPn ); | |
632 | RETURN; | |
a0d0e21e LW |
633 | } |
634 | } | |
635 | ||
636 | PP(pp_aelemfast) | |
637 | { | |
97aff369 | 638 | dVAR; dSP; |
c445ea15 | 639 | AV * const av = PL_op->op_flags & OPf_SPECIAL ? |
6a077020 | 640 | (AV*)PAD_SV(PL_op->op_targ) : GvAV(cGVOP_gv); |
a3b680e6 | 641 | const U32 lval = PL_op->op_flags & OPf_MOD; |
0bd48802 | 642 | SV** const svp = av_fetch(av, PL_op->op_private, lval); |
3280af22 | 643 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 644 | EXTEND(SP, 1); |
be6c24e0 GS |
645 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
646 | sv = sv_mortalcopy(sv); | |
647 | PUSHs(sv); | |
a0d0e21e LW |
648 | RETURN; |
649 | } | |
650 | ||
651 | PP(pp_join) | |
652 | { | |
97aff369 | 653 | dVAR; dSP; dMARK; dTARGET; |
a0d0e21e LW |
654 | MARK++; |
655 | do_join(TARG, *MARK, MARK, SP); | |
656 | SP = MARK; | |
657 | SETs(TARG); | |
658 | RETURN; | |
659 | } | |
660 | ||
661 | PP(pp_pushre) | |
662 | { | |
97aff369 | 663 | dVAR; dSP; |
44a8e56a | 664 | #ifdef DEBUGGING |
665 | /* | |
666 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
667 | * will be enough to hold an OP*. | |
668 | */ | |
c4420975 | 669 | SV* const sv = sv_newmortal(); |
44a8e56a | 670 | sv_upgrade(sv, SVt_PVLV); |
671 | LvTYPE(sv) = '/'; | |
533c011a | 672 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 673 | XPUSHs(sv); |
674 | #else | |
6b88bc9c | 675 | XPUSHs((SV*)PL_op); |
44a8e56a | 676 | #endif |
a0d0e21e LW |
677 | RETURN; |
678 | } | |
679 | ||
680 | /* Oversized hot code. */ | |
681 | ||
682 | PP(pp_print) | |
683 | { | |
27da23d5 | 684 | dVAR; dSP; dMARK; dORIGMARK; |
a0d0e21e | 685 | IO *io; |
760ac839 | 686 | register PerlIO *fp; |
236988e4 | 687 | MAGIC *mg; |
0bd48802 | 688 | GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv; |
5b468f54 AMS |
689 | |
690 | if (gv && (io = GvIO(gv)) | |
691 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
692 | { | |
01bb7c6d | 693 | had_magic: |
68dc0745 | 694 | if (MARK == ORIGMARK) { |
1c846c1f | 695 | /* If using default handle then we need to make space to |
a60c0954 NIS |
696 | * pass object as 1st arg, so move other args up ... |
697 | */ | |
4352c267 | 698 | MEXTEND(SP, 1); |
68dc0745 | 699 | ++MARK; |
700 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
701 | ++SP; | |
702 | } | |
703 | PUSHMARK(MARK - 1); | |
5b468f54 | 704 | *MARK = SvTIED_obj((SV*)io, mg); |
68dc0745 | 705 | PUTBACK; |
236988e4 | 706 | ENTER; |
864dbfa3 | 707 | call_method("PRINT", G_SCALAR); |
236988e4 | 708 | LEAVE; |
709 | SPAGAIN; | |
68dc0745 | 710 | MARK = ORIGMARK + 1; |
711 | *MARK = *SP; | |
712 | SP = MARK; | |
236988e4 | 713 | RETURN; |
714 | } | |
a0d0e21e | 715 | if (!(io = GvIO(gv))) { |
5b468f54 AMS |
716 | if ((GvEGV(gv)) && (io = GvIO(GvEGV(gv))) |
717 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
01bb7c6d | 718 | goto had_magic; |
2dd78f96 JH |
719 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
720 | report_evil_fh(gv, io, PL_op->op_type); | |
93189314 | 721 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
722 | goto just_say_no; |
723 | } | |
724 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 725 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 NC |
726 | if (IoIFP(io)) |
727 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); | |
2dd78f96 | 728 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f | 729 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e | 730 | } |
93189314 | 731 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e LW |
732 | goto just_say_no; |
733 | } | |
734 | else { | |
735 | MARK++; | |
7889fe52 | 736 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e LW |
737 | while (MARK <= SP) { |
738 | if (!do_print(*MARK, fp)) | |
739 | break; | |
740 | MARK++; | |
741 | if (MARK <= SP) { | |
7889fe52 | 742 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e LW |
743 | MARK--; |
744 | break; | |
745 | } | |
746 | } | |
747 | } | |
748 | } | |
749 | else { | |
750 | while (MARK <= SP) { | |
751 | if (!do_print(*MARK, fp)) | |
752 | break; | |
753 | MARK++; | |
754 | } | |
755 | } | |
756 | if (MARK <= SP) | |
757 | goto just_say_no; | |
758 | else { | |
cfc4a7da GA |
759 | if (PL_op->op_type == OP_SAY) { |
760 | if (PerlIO_write(fp, "\n", 1) == 0 || PerlIO_error(fp)) | |
761 | goto just_say_no; | |
762 | } | |
763 | else if (PL_ors_sv && SvOK(PL_ors_sv)) | |
7889fe52 | 764 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
a0d0e21e LW |
765 | goto just_say_no; |
766 | ||
767 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 768 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
769 | goto just_say_no; |
770 | } | |
771 | } | |
772 | SP = ORIGMARK; | |
e52fd6f4 | 773 | XPUSHs(&PL_sv_yes); |
a0d0e21e LW |
774 | RETURN; |
775 | ||
776 | just_say_no: | |
777 | SP = ORIGMARK; | |
e52fd6f4 | 778 | XPUSHs(&PL_sv_undef); |
a0d0e21e LW |
779 | RETURN; |
780 | } | |
781 | ||
782 | PP(pp_rv2av) | |
783 | { | |
97aff369 | 784 | dVAR; dSP; dTOPss; |
cde874ca | 785 | const I32 gimme = GIMME_V; |
17ab7946 NC |
786 | static const char return_array_to_lvalue_scalar[] = "Can't return array to lvalue scalar context"; |
787 | static const char return_hash_to_lvalue_scalar[] = "Can't return hash to lvalue scalar context"; | |
788 | static const char an_array[] = "an ARRAY"; | |
789 | static const char a_hash[] = "a HASH"; | |
790 | const bool is_pp_rv2av = PL_op->op_type == OP_RV2AV; | |
791 | const U32 type = is_pp_rv2av ? SVt_PVAV : SVt_PVHV; | |
a0d0e21e LW |
792 | |
793 | if (SvROK(sv)) { | |
794 | wasref: | |
17ab7946 | 795 | tryAMAGICunDEREF_var(is_pp_rv2av ? to_av_amg : to_hv_amg); |
f5284f61 | 796 | |
17ab7946 NC |
797 | sv = SvRV(sv); |
798 | if (SvTYPE(sv) != type) | |
799 | DIE(aTHX_ "Not %s reference", is_pp_rv2av ? an_array : a_hash); | |
533c011a | 800 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 801 | SETs(sv); |
a0d0e21e LW |
802 | RETURN; |
803 | } | |
78f9721b | 804 | else if (LVRET) { |
cde874ca | 805 | if (gimme != G_ARRAY) |
17ab7946 NC |
806 | Perl_croak(aTHX_ is_pp_rv2av ? return_array_to_lvalue_scalar |
807 | : return_hash_to_lvalue_scalar); | |
808 | SETs(sv); | |
78f9721b SM |
809 | RETURN; |
810 | } | |
82d03984 RGS |
811 | else if (PL_op->op_flags & OPf_MOD |
812 | && PL_op->op_private & OPpLVAL_INTRO) | |
813 | Perl_croak(aTHX_ PL_no_localize_ref); | |
a0d0e21e LW |
814 | } |
815 | else { | |
17ab7946 | 816 | if (SvTYPE(sv) == type) { |
533c011a | 817 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 818 | SETs(sv); |
a0d0e21e LW |
819 | RETURN; |
820 | } | |
78f9721b | 821 | else if (LVRET) { |
cde874ca | 822 | if (gimme != G_ARRAY) |
17ab7946 NC |
823 | Perl_croak(aTHX_ |
824 | is_pp_rv2av ? return_array_to_lvalue_scalar | |
825 | : return_hash_to_lvalue_scalar); | |
826 | SETs(sv); | |
78f9721b SM |
827 | RETURN; |
828 | } | |
a0d0e21e LW |
829 | } |
830 | else { | |
67955e0c | 831 | GV *gv; |
1c846c1f | 832 | |
a0d0e21e LW |
833 | if (SvTYPE(sv) != SVt_PVGV) { |
834 | if (SvGMAGICAL(sv)) { | |
835 | mg_get(sv); | |
836 | if (SvROK(sv)) | |
837 | goto wasref; | |
838 | } | |
dc3c76f8 NC |
839 | gv = Perl_softref2xv(aTHX_ sv, is_pp_rv2av ? an_array : a_hash, |
840 | type, &sp); | |
841 | if (!gv) | |
842 | RETURN; | |
35cd451c GS |
843 | } |
844 | else { | |
67955e0c | 845 | gv = (GV*)sv; |
a0d0e21e | 846 | } |
17ab7946 | 847 | sv = is_pp_rv2av ? (SV*)GvAVn(gv) : (SV*)GvHVn(gv); |
533c011a | 848 | if (PL_op->op_private & OPpLVAL_INTRO) |
17ab7946 | 849 | sv = is_pp_rv2av ? (SV*)save_ary(gv) : (SV*)save_hash(gv); |
533c011a | 850 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 851 | SETs(sv); |
a0d0e21e LW |
852 | RETURN; |
853 | } | |
78f9721b | 854 | else if (LVRET) { |
cde874ca | 855 | if (gimme != G_ARRAY) |
17ab7946 NC |
856 | Perl_croak(aTHX_ |
857 | is_pp_rv2av ? return_array_to_lvalue_scalar | |
858 | : return_hash_to_lvalue_scalar); | |
859 | SETs(sv); | |
78f9721b SM |
860 | RETURN; |
861 | } | |
a0d0e21e LW |
862 | } |
863 | } | |
864 | ||
17ab7946 NC |
865 | if (is_pp_rv2av) { |
866 | AV *const av = (AV*)sv; | |
867 | /* The guts of pp_rv2av, with no intenting change to preserve history | |
868 | (until such time as we get tools that can do blame annotation across | |
869 | whitespace changes. */ | |
cde874ca | 870 | if (gimme == G_ARRAY) { |
a3b680e6 | 871 | const I32 maxarg = AvFILL(av) + 1; |
c2444246 | 872 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f | 873 | EXTEND(SP, maxarg); |
93965878 | 874 | if (SvRMAGICAL(av)) { |
1c846c1f | 875 | U32 i; |
eb160463 | 876 | for (i=0; i < (U32)maxarg; i++) { |
0bcc34c2 | 877 | SV ** const svp = av_fetch(av, i, FALSE); |
547d1dd8 HS |
878 | /* See note in pp_helem, and bug id #27839 */ |
879 | SP[i+1] = svp | |
880 | ? SvGMAGICAL(*svp) ? sv_mortalcopy(*svp) : *svp | |
881 | : &PL_sv_undef; | |
93965878 | 882 | } |
1c846c1f | 883 | } |
93965878 NIS |
884 | else { |
885 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
886 | } | |
a0d0e21e LW |
887 | SP += maxarg; |
888 | } | |
cde874ca | 889 | else if (gimme == G_SCALAR) { |
a0d0e21e | 890 | dTARGET; |
a3b680e6 | 891 | const I32 maxarg = AvFILL(av) + 1; |
f5284f61 | 892 | SETi(maxarg); |
a0d0e21e | 893 | } |
17ab7946 NC |
894 | } else { |
895 | /* The guts of pp_rv2hv */ | |
be85d344 | 896 | if (gimme == G_ARRAY) { /* array wanted */ |
17ab7946 | 897 | *PL_stack_sp = sv; |
cea2e8a9 | 898 | return do_kv(); |
a0d0e21e | 899 | } |
be85d344 | 900 | else if (gimme == G_SCALAR) { |
a0d0e21e | 901 | dTARGET; |
17ab7946 | 902 | TARG = Perl_hv_scalar(aTHX_ (HV*)sv); |
a0d0e21e | 903 | SETTARG; |
a0d0e21e | 904 | } |
17ab7946 | 905 | } |
be85d344 | 906 | RETURN; |
a0d0e21e LW |
907 | } |
908 | ||
10c8fecd GS |
909 | STATIC void |
910 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
911 | { | |
97aff369 | 912 | dVAR; |
10c8fecd GS |
913 | if (*relem) { |
914 | SV *tmpstr; | |
b464bac0 | 915 | const HE *didstore; |
6d822dc4 MS |
916 | |
917 | if (ckWARN(WARN_MISC)) { | |
a3b680e6 | 918 | const char *err; |
10c8fecd GS |
919 | if (relem == firstrelem && |
920 | SvROK(*relem) && | |
921 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
922 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
923 | { | |
a3b680e6 | 924 | err = "Reference found where even-sized list expected"; |
10c8fecd GS |
925 | } |
926 | else | |
a3b680e6 AL |
927 | err = "Odd number of elements in hash assignment"; |
928 | Perl_warner(aTHX_ packWARN(WARN_MISC), err); | |
10c8fecd | 929 | } |
6d822dc4 | 930 | |
561b68a9 | 931 | tmpstr = newSV(0); |
6d822dc4 MS |
932 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
933 | if (SvMAGICAL(hash)) { | |
934 | if (SvSMAGICAL(tmpstr)) | |
935 | mg_set(tmpstr); | |
936 | if (!didstore) | |
937 | sv_2mortal(tmpstr); | |
938 | } | |
939 | TAINT_NOT; | |
10c8fecd GS |
940 | } |
941 | } | |
942 | ||
a0d0e21e LW |
943 | PP(pp_aassign) |
944 | { | |
27da23d5 | 945 | dVAR; dSP; |
3280af22 NIS |
946 | SV **lastlelem = PL_stack_sp; |
947 | SV **lastrelem = PL_stack_base + POPMARK; | |
948 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
949 | SV **firstlelem = lastrelem + 1; |
950 | ||
951 | register SV **relem; | |
952 | register SV **lelem; | |
953 | ||
954 | register SV *sv; | |
955 | register AV *ary; | |
956 | ||
54310121 | 957 | I32 gimme; |
a0d0e21e LW |
958 | HV *hash; |
959 | I32 i; | |
960 | int magic; | |
ca65944e | 961 | int duplicates = 0; |
cbbf8932 | 962 | SV **firsthashrelem = NULL; /* "= 0" keeps gcc 2.95 quiet */ |
5637b936 | 963 | |
a0d0e21e | 964 | |
3280af22 | 965 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
ca65944e | 966 | gimme = GIMME_V; |
a0d0e21e LW |
967 | |
968 | /* If there's a common identifier on both sides we have to take | |
969 | * special care that assigning the identifier on the left doesn't | |
970 | * clobber a value on the right that's used later in the list. | |
971 | */ | |
10c8fecd | 972 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 | 973 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd | 974 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
155aba94 | 975 | if ((sv = *relem)) { |
a1f49e72 | 976 | TAINT_NOT; /* Each item is independent */ |
10c8fecd | 977 | *relem = sv_mortalcopy(sv); |
a1f49e72 | 978 | } |
10c8fecd | 979 | } |
a0d0e21e | 980 | } |
461824dc RGS |
981 | if (PL_op->op_private & OPpASSIGN_STATE) { |
982 | if (SvPADSTALE(*firstlelem)) | |
983 | SvPADSTALE_off(*firstlelem); | |
984 | else | |
985 | RETURN; /* ignore assignment */ | |
986 | } | |
a0d0e21e LW |
987 | |
988 | relem = firstrelem; | |
989 | lelem = firstlelem; | |
4608196e RGS |
990 | ary = NULL; |
991 | hash = NULL; | |
10c8fecd | 992 | |
a0d0e21e | 993 | while (lelem <= lastlelem) { |
bbce6d69 | 994 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
995 | sv = *lelem++; |
996 | switch (SvTYPE(sv)) { | |
997 | case SVt_PVAV: | |
998 | ary = (AV*)sv; | |
748a9306 | 999 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e | 1000 | av_clear(ary); |
7e42bd57 | 1001 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1002 | i = 0; |
1003 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1004 | SV **didstore; |
a0d0e21e | 1005 | assert(*relem); |
f2b990bf | 1006 | sv = newSVsv(*relem); |
a0d0e21e | 1007 | *(relem++) = sv; |
5117ca91 GS |
1008 | didstore = av_store(ary,i++,sv); |
1009 | if (magic) { | |
fb73857a | 1010 | if (SvSMAGICAL(sv)) |
1011 | mg_set(sv); | |
5117ca91 | 1012 | if (!didstore) |
8127e0e3 | 1013 | sv_2mortal(sv); |
5117ca91 | 1014 | } |
bbce6d69 | 1015 | TAINT_NOT; |
a0d0e21e LW |
1016 | } |
1017 | break; | |
10c8fecd | 1018 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e LW |
1019 | SV *tmpstr; |
1020 | ||
1021 | hash = (HV*)sv; | |
748a9306 | 1022 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e | 1023 | hv_clear(hash); |
ca65944e | 1024 | firsthashrelem = relem; |
a0d0e21e LW |
1025 | |
1026 | while (relem < lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1027 | HE *didstore; |
6136c704 AL |
1028 | sv = *relem ? *relem : &PL_sv_no; |
1029 | relem++; | |
561b68a9 | 1030 | tmpstr = newSV(0); |
a0d0e21e LW |
1031 | if (*relem) |
1032 | sv_setsv(tmpstr,*relem); /* value */ | |
1033 | *(relem++) = tmpstr; | |
ca65944e RGS |
1034 | if (gimme != G_VOID && hv_exists_ent(hash, sv, 0)) |
1035 | /* key overwrites an existing entry */ | |
1036 | duplicates += 2; | |
5117ca91 GS |
1037 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1038 | if (magic) { | |
fb73857a | 1039 | if (SvSMAGICAL(tmpstr)) |
1040 | mg_set(tmpstr); | |
5117ca91 | 1041 | if (!didstore) |
8127e0e3 | 1042 | sv_2mortal(tmpstr); |
5117ca91 | 1043 | } |
bbce6d69 | 1044 | TAINT_NOT; |
8e07c86e | 1045 | } |
6a0deba8 | 1046 | if (relem == lastrelem) { |
10c8fecd | 1047 | do_oddball(hash, relem, firstrelem); |
6a0deba8 | 1048 | relem++; |
1930e939 | 1049 | } |
a0d0e21e LW |
1050 | } |
1051 | break; | |
1052 | default: | |
6fc92669 GS |
1053 | if (SvIMMORTAL(sv)) { |
1054 | if (relem <= lastrelem) | |
1055 | relem++; | |
1056 | break; | |
a0d0e21e LW |
1057 | } |
1058 | if (relem <= lastrelem) { | |
1059 | sv_setsv(sv, *relem); | |
1060 | *(relem++) = sv; | |
1061 | } | |
1062 | else | |
3280af22 | 1063 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e LW |
1064 | SvSETMAGIC(sv); |
1065 | break; | |
1066 | } | |
1067 | } | |
3280af22 NIS |
1068 | if (PL_delaymagic & ~DM_DELAY) { |
1069 | if (PL_delaymagic & DM_UID) { | |
a0d0e21e | 1070 | #ifdef HAS_SETRESUID |
fb934a90 RD |
1071 | (void)setresuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1072 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1, | |
1073 | (Uid_t)-1); | |
56febc5e AD |
1074 | #else |
1075 | # ifdef HAS_SETREUID | |
fb934a90 RD |
1076 | (void)setreuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1077 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1); | |
56febc5e AD |
1078 | # else |
1079 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
1080 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1081 | (void)setruid(PL_uid); | |
1082 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 1083 | } |
56febc5e AD |
1084 | # endif /* HAS_SETRUID */ |
1085 | # ifdef HAS_SETEUID | |
b28d0864 | 1086 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
fb934a90 | 1087 | (void)seteuid(PL_euid); |
b28d0864 | 1088 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e | 1089 | } |
56febc5e | 1090 | # endif /* HAS_SETEUID */ |
b28d0864 NIS |
1091 | if (PL_delaymagic & DM_UID) { |
1092 | if (PL_uid != PL_euid) | |
cea2e8a9 | 1093 | DIE(aTHX_ "No setreuid available"); |
b28d0864 | 1094 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e | 1095 | } |
56febc5e AD |
1096 | # endif /* HAS_SETREUID */ |
1097 | #endif /* HAS_SETRESUID */ | |
d8eceb89 JH |
1098 | PL_uid = PerlProc_getuid(); |
1099 | PL_euid = PerlProc_geteuid(); | |
a0d0e21e | 1100 | } |
3280af22 | 1101 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1102 | #ifdef HAS_SETRESGID |
fb934a90 RD |
1103 | (void)setresgid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1104 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1, | |
1105 | (Gid_t)-1); | |
56febc5e AD |
1106 | #else |
1107 | # ifdef HAS_SETREGID | |
fb934a90 RD |
1108 | (void)setregid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1109 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1); | |
56febc5e AD |
1110 | # else |
1111 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
1112 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1113 | (void)setrgid(PL_gid); | |
1114 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 1115 | } |
56febc5e AD |
1116 | # endif /* HAS_SETRGID */ |
1117 | # ifdef HAS_SETEGID | |
b28d0864 | 1118 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
fb934a90 | 1119 | (void)setegid(PL_egid); |
b28d0864 | 1120 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e | 1121 | } |
56febc5e | 1122 | # endif /* HAS_SETEGID */ |
b28d0864 NIS |
1123 | if (PL_delaymagic & DM_GID) { |
1124 | if (PL_gid != PL_egid) | |
cea2e8a9 | 1125 | DIE(aTHX_ "No setregid available"); |
b28d0864 | 1126 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e | 1127 | } |
56febc5e AD |
1128 | # endif /* HAS_SETREGID */ |
1129 | #endif /* HAS_SETRESGID */ | |
d8eceb89 JH |
1130 | PL_gid = PerlProc_getgid(); |
1131 | PL_egid = PerlProc_getegid(); | |
a0d0e21e | 1132 | } |
3280af22 | 1133 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e | 1134 | } |
3280af22 | 1135 | PL_delaymagic = 0; |
54310121 | 1136 | |
54310121 | 1137 | if (gimme == G_VOID) |
1138 | SP = firstrelem - 1; | |
1139 | else if (gimme == G_SCALAR) { | |
1140 | dTARGET; | |
1141 | SP = firstrelem; | |
ca65944e | 1142 | SETi(lastrelem - firstrelem + 1 - duplicates); |
54310121 | 1143 | } |
1144 | else { | |
ca65944e | 1145 | if (ary) |
a0d0e21e | 1146 | SP = lastrelem; |
ca65944e RGS |
1147 | else if (hash) { |
1148 | if (duplicates) { | |
1149 | /* Removes from the stack the entries which ended up as | |
1150 | * duplicated keys in the hash (fix for [perl #24380]) */ | |
1151 | Move(firsthashrelem + duplicates, | |
1152 | firsthashrelem, duplicates, SV**); | |
1153 | lastrelem -= duplicates; | |
1154 | } | |
1155 | SP = lastrelem; | |
1156 | } | |
a0d0e21e LW |
1157 | else |
1158 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 1159 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 1160 | while (relem <= SP) |
3280af22 | 1161 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 1162 | } |
54310121 | 1163 | RETURN; |
a0d0e21e LW |
1164 | } |
1165 | ||
8782bef2 GB |
1166 | PP(pp_qr) |
1167 | { | |
97aff369 | 1168 | dVAR; dSP; |
c4420975 AL |
1169 | register PMOP * const pm = cPMOP; |
1170 | SV * const rv = sv_newmortal(); | |
1171 | SV * const sv = newSVrv(rv, "Regexp"); | |
e08e52cf AMS |
1172 | if (pm->op_pmdynflags & PMdf_TAINTED) |
1173 | SvTAINTED_on(rv); | |
aaa362c4 | 1174 | sv_magic(sv,(SV*)ReREFCNT_inc(PM_GETRE(pm)), PERL_MAGIC_qr,0,0); |
8782bef2 GB |
1175 | RETURNX(PUSHs(rv)); |
1176 | } | |
1177 | ||
a0d0e21e LW |
1178 | PP(pp_match) |
1179 | { | |
97aff369 | 1180 | dVAR; dSP; dTARG; |
a0d0e21e | 1181 | register PMOP *pm = cPMOP; |
d65afb4b | 1182 | PMOP *dynpm = pm; |
0d46e09a SP |
1183 | register const char *t; |
1184 | register const char *s; | |
5c144d81 | 1185 | const char *strend; |
a0d0e21e | 1186 | I32 global; |
f722798b | 1187 | I32 r_flags = REXEC_CHECKED; |
5c144d81 | 1188 | const char *truebase; /* Start of string */ |
aaa362c4 | 1189 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1190 | bool rxtainted; |
a3b680e6 | 1191 | const I32 gimme = GIMME; |
a0d0e21e | 1192 | STRLEN len; |
748a9306 | 1193 | I32 minmatch = 0; |
a3b680e6 | 1194 | const I32 oldsave = PL_savestack_ix; |
f86702cc | 1195 | I32 update_minmatch = 1; |
e60df1fa | 1196 | I32 had_zerolen = 0; |
58e23c8d | 1197 | U32 gpos = 0; |
a0d0e21e | 1198 | |
533c011a | 1199 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1200 | TARG = POPs; |
59f00321 RGS |
1201 | else if (PL_op->op_private & OPpTARGET_MY) |
1202 | GETTARGET; | |
a0d0e21e | 1203 | else { |
54b9620d | 1204 | TARG = DEFSV; |
a0d0e21e LW |
1205 | EXTEND(SP,1); |
1206 | } | |
d9f424b2 | 1207 | |
c277df42 | 1208 | PUTBACK; /* EVAL blocks need stack_sp. */ |
5c144d81 | 1209 | s = SvPV_const(TARG, len); |
a0d0e21e | 1210 | if (!s) |
2269b42e | 1211 | DIE(aTHX_ "panic: pp_match"); |
890ce7af | 1212 | strend = s + len; |
b3eb6a9b | 1213 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 | 1214 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 1215 | TAINT_NOT; |
a0d0e21e | 1216 | |
a30b2f1f | 1217 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 1218 | |
d65afb4b | 1219 | /* PMdf_USED is set after a ?? matches once */ |
48c036b1 | 1220 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 | 1221 | failure: |
a0d0e21e LW |
1222 | if (gimme == G_ARRAY) |
1223 | RETURN; | |
1224 | RETPUSHNO; | |
1225 | } | |
1226 | ||
d65afb4b | 1227 | /* empty pattern special-cased to use last successful pattern if possible */ |
3280af22 NIS |
1228 | if (!rx->prelen && PL_curpm) { |
1229 | pm = PL_curpm; | |
aaa362c4 | 1230 | rx = PM_GETRE(pm); |
a0d0e21e | 1231 | } |
d65afb4b | 1232 | |
eb160463 | 1233 | if (rx->minlen > (I32)len) |
d65afb4b | 1234 | goto failure; |
c277df42 | 1235 | |
a0d0e21e | 1236 | truebase = t = s; |
ad94a511 IZ |
1237 | |
1238 | /* XXXX What part of this is needed with true \G-support? */ | |
d65afb4b | 1239 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
cf93c79d | 1240 | rx->startp[0] = -1; |
a0d0e21e | 1241 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
c445ea15 | 1242 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 | 1243 | if (mg && mg->mg_len >= 0) { |
bbe252da | 1244 | if (!(rx->extflags & RXf_GPOS_SEEN)) |
1c846c1f | 1245 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
bbe252da | 1246 | else if (rx->extflags & RXf_ANCH_GPOS) { |
0ef3e39e | 1247 | r_flags |= REXEC_IGNOREPOS; |
1c846c1f | 1248 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
bbe252da | 1249 | } else if (rx->extflags & RXf_GPOS_FLOAT) |
58e23c8d YO |
1250 | gpos = mg->mg_len; |
1251 | else | |
1252 | rx->endp[0] = rx->startp[0] = mg->mg_len; | |
1253 | minmatch = (mg->mg_flags & MGf_MINMATCH) ? rx->gofs + 1 : 0; | |
f86702cc | 1254 | update_minmatch = 0; |
748a9306 | 1255 | } |
a0d0e21e LW |
1256 | } |
1257 | } | |
58e23c8d YO |
1258 | /* remove comment to get faster /g but possibly unsafe $1 vars after a |
1259 | match. Test for the unsafe vars will fail as well*/ | |
1260 | if (( /* !global && */ rx->nparens) | |
cde0cee5 YO |
1261 | || SvTEMP(TARG) || PL_sawampersand || |
1262 | (pm->op_pmflags & (PMf_EVAL|PMf_KEEPCOPY))) | |
14977893 | 1263 | r_flags |= REXEC_COPY_STR; |
1c846c1f | 1264 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
1265 | r_flags |= REXEC_SCREAM; |
1266 | ||
a0d0e21e | 1267 | play_it_again: |
cf93c79d | 1268 | if (global && rx->startp[0] != -1) { |
58e23c8d YO |
1269 | t = s = rx->endp[0] + truebase - rx->gofs; |
1270 | if ((s + rx->minlen) > strend || s < truebase) | |
a0d0e21e | 1271 | goto nope; |
f86702cc | 1272 | if (update_minmatch++) |
e60df1fa | 1273 | minmatch = had_zerolen; |
a0d0e21e | 1274 | } |
bbe252da YO |
1275 | if (rx->extflags & RXf_USE_INTUIT && |
1276 | DO_UTF8(TARG) == ((rx->extflags & RXf_UTF8) != 0)) { | |
5c144d81 NC |
1277 | /* FIXME - can PL_bostr be made const char *? */ |
1278 | PL_bostr = (char *)truebase; | |
f9f4320a | 1279 | s = CALLREG_INTUIT_START(rx, TARG, (char *)s, (char *)strend, r_flags, NULL); |
f722798b IZ |
1280 | |
1281 | if (!s) | |
1282 | goto nope; | |
bbe252da | 1283 | if ( (rx->extflags & RXf_CHECK_ALL) |
14977893 | 1284 | && !PL_sawampersand |
cde0cee5 | 1285 | && !(pm->op_pmflags & PMf_KEEPCOPY) |
bbe252da YO |
1286 | && ((rx->extflags & RXf_NOSCAN) |
1287 | || !((rx->extflags & RXf_INTUIT_TAIL) | |
05b4157f GS |
1288 | && (r_flags & REXEC_SCREAM))) |
1289 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
f722798b | 1290 | goto yup; |
a0d0e21e | 1291 | } |
70685ca0 | 1292 | if (CALLREGEXEC(rx, (char*)s, (char *)strend, (char*)truebase, minmatch, TARG, INT2PTR(void*, gpos), r_flags)) |
bbce6d69 | 1293 | { |
3280af22 | 1294 | PL_curpm = pm; |
d65afb4b HS |
1295 | if (dynpm->op_pmflags & PMf_ONCE) |
1296 | dynpm->op_pmdynflags |= PMdf_USED; | |
a0d0e21e LW |
1297 | goto gotcha; |
1298 | } | |
1299 | else | |
1300 | goto ret_no; | |
1301 | /*NOTREACHED*/ | |
1302 | ||
1303 | gotcha: | |
72311751 GS |
1304 | if (rxtainted) |
1305 | RX_MATCH_TAINTED_on(rx); | |
1306 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1307 | if (gimme == G_ARRAY) { |
a3b680e6 AL |
1308 | const I32 nparens = rx->nparens; |
1309 | I32 i = (global && !nparens) ? 1 : 0; | |
a0d0e21e | 1310 | |
c277df42 | 1311 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1312 | EXTEND(SP, nparens + i); |
1313 | EXTEND_MORTAL(nparens + i); | |
1314 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e | 1315 | PUSHs(sv_newmortal()); |
cf93c79d | 1316 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
b464bac0 | 1317 | const I32 len = rx->endp[i] - rx->startp[i]; |
289555fe | 1318 | s = rx->startp[i] + truebase; |
290deeac A |
1319 | if (rx->endp[i] < 0 || rx->startp[i] < 0 || |
1320 | len < 0 || len > strend - s) | |
1321 | DIE(aTHX_ "panic: pp_match start/end pointers"); | |
a0d0e21e | 1322 | sv_setpvn(*SP, s, len); |
cce850e4 | 1323 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1324 | SvUTF8_on(*SP); |
a0d0e21e LW |
1325 | } |
1326 | } | |
1327 | if (global) { | |
d65afb4b | 1328 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
6136c704 | 1329 | MAGIC* mg = NULL; |
0af80b60 HS |
1330 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
1331 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1332 | if (!mg) { | |
d83f0a82 NC |
1333 | #ifdef PERL_OLD_COPY_ON_WRITE |
1334 | if (SvIsCOW(TARG)) | |
1335 | sv_force_normal_flags(TARG, 0); | |
1336 | #endif | |
1337 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1338 | &PL_vtbl_mglob, NULL, 0); | |
0af80b60 HS |
1339 | } |
1340 | if (rx->startp[0] != -1) { | |
1341 | mg->mg_len = rx->endp[0]; | |
70685ca0 | 1342 | if (rx->startp[0] + rx->gofs == (UV)rx->endp[0]) |
0af80b60 HS |
1343 | mg->mg_flags |= MGf_MINMATCH; |
1344 | else | |
1345 | mg->mg_flags &= ~MGf_MINMATCH; | |
1346 | } | |
1347 | } | |
cf93c79d | 1348 | had_zerolen = (rx->startp[0] != -1 |
70685ca0 | 1349 | && rx->startp[0] + rx->gofs == (UV)rx->endp[0]); |
c277df42 | 1350 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1351 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1352 | goto play_it_again; |
1353 | } | |
ffc61ed2 | 1354 | else if (!nparens) |
bde848c5 | 1355 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1356 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1357 | RETURN; |
1358 | } | |
1359 | else { | |
1360 | if (global) { | |
cbbf8932 | 1361 | MAGIC* mg; |
a0d0e21e | 1362 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
14befaf4 | 1363 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
cbbf8932 AL |
1364 | else |
1365 | mg = NULL; | |
a0d0e21e | 1366 | if (!mg) { |
d83f0a82 NC |
1367 | #ifdef PERL_OLD_COPY_ON_WRITE |
1368 | if (SvIsCOW(TARG)) | |
1369 | sv_force_normal_flags(TARG, 0); | |
1370 | #endif | |
1371 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1372 | &PL_vtbl_mglob, NULL, 0); | |
a0d0e21e | 1373 | } |
cf93c79d IZ |
1374 | if (rx->startp[0] != -1) { |
1375 | mg->mg_len = rx->endp[0]; | |
70685ca0 | 1376 | if (rx->startp[0] + rx->gofs == (UV)rx->endp[0]) |
748a9306 LW |
1377 | mg->mg_flags |= MGf_MINMATCH; |
1378 | else | |
1379 | mg->mg_flags &= ~MGf_MINMATCH; | |
1380 | } | |
a0d0e21e | 1381 | } |
4633a7c4 | 1382 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1383 | RETPUSHYES; |
1384 | } | |
1385 | ||
f722798b | 1386 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1387 | if (rxtainted) |
1388 | RX_MATCH_TAINTED_on(rx); | |
1389 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1390 | PL_curpm = pm; |
d65afb4b HS |
1391 | if (dynpm->op_pmflags & PMf_ONCE) |
1392 | dynpm->op_pmdynflags |= PMdf_USED; | |
cf93c79d IZ |
1393 | if (RX_MATCH_COPIED(rx)) |
1394 | Safefree(rx->subbeg); | |
1395 | RX_MATCH_COPIED_off(rx); | |
6136c704 | 1396 | rx->subbeg = NULL; |
a0d0e21e | 1397 | if (global) { |
5c144d81 NC |
1398 | /* FIXME - should rx->subbeg be const char *? */ |
1399 | rx->subbeg = (char *) truebase; | |
cf93c79d | 1400 | rx->startp[0] = s - truebase; |
a30b2f1f | 1401 | if (RX_MATCH_UTF8(rx)) { |
de8c5301 | 1402 | char * const t = (char*)utf8_hop((U8*)s, rx->minlenret); |
60aeb6fd NIS |
1403 | rx->endp[0] = t - truebase; |
1404 | } | |
1405 | else { | |
de8c5301 | 1406 | rx->endp[0] = s - truebase + rx->minlenret; |
60aeb6fd | 1407 | } |
cf93c79d | 1408 | rx->sublen = strend - truebase; |
a0d0e21e | 1409 | goto gotcha; |
1c846c1f | 1410 | } |
cde0cee5 | 1411 | if (PL_sawampersand || pm->op_pmflags & PMf_KEEPCOPY) { |
14977893 | 1412 | I32 off; |
f8c7b90f | 1413 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
1414 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
1415 | if (DEBUG_C_TEST) { | |
1416 | PerlIO_printf(Perl_debug_log, | |
1417 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", | |
6c9570dc | 1418 | (int) SvTYPE(TARG), (void*)truebase, (void*)t, |
ed252734 NC |
1419 | (int)(t-truebase)); |
1420 | } | |
1421 | rx->saved_copy = sv_setsv_cow(rx->saved_copy, TARG); | |
555831ce | 1422 | rx->subbeg = (char *) SvPVX_const(rx->saved_copy) + (t - truebase); |
ed252734 NC |
1423 | assert (SvPOKp(rx->saved_copy)); |
1424 | } else | |
1425 | #endif | |
1426 | { | |
14977893 | 1427 | |
ed252734 | 1428 | rx->subbeg = savepvn(t, strend - t); |
f8c7b90f | 1429 | #ifdef PERL_OLD_COPY_ON_WRITE |
a0714e2c | 1430 | rx->saved_copy = NULL; |
ed252734 NC |
1431 | #endif |
1432 | } | |
14977893 JH |
1433 | rx->sublen = strend - t; |
1434 | RX_MATCH_COPIED_on(rx); | |
1435 | off = rx->startp[0] = s - t; | |
de8c5301 | 1436 | rx->endp[0] = off + rx->minlenret; |
14977893 JH |
1437 | } |
1438 | else { /* startp/endp are used by @- @+. */ | |
1439 | rx->startp[0] = s - truebase; | |
de8c5301 | 1440 | rx->endp[0] = s - truebase + rx->minlenret; |
14977893 | 1441 | } |
cde0cee5 YO |
1442 | /* including rx->nparens in the below code seems highly suspicious. |
1443 | -dmq */ | |
2d862feb | 1444 | rx->nparens = rx->lastparen = rx->lastcloseparen = 0; /* used by @-, @+, and $^N */ |
4633a7c4 | 1445 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1446 | RETPUSHYES; |
1447 | ||
1448 | nope: | |
a0d0e21e | 1449 | ret_no: |
d65afb4b | 1450 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e | 1451 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
6136c704 | 1452 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1453 | if (mg) |
565764a8 | 1454 | mg->mg_len = -1; |
a0d0e21e LW |
1455 | } |
1456 | } | |
4633a7c4 | 1457 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1458 | if (gimme == G_ARRAY) |
1459 | RETURN; | |
1460 | RETPUSHNO; | |
1461 | } | |
1462 | ||
1463 | OP * | |
864dbfa3 | 1464 | Perl_do_readline(pTHX) |
a0d0e21e | 1465 | { |
27da23d5 | 1466 | dVAR; dSP; dTARGETSTACKED; |
a0d0e21e LW |
1467 | register SV *sv; |
1468 | STRLEN tmplen = 0; | |
1469 | STRLEN offset; | |
760ac839 | 1470 | PerlIO *fp; |
a3b680e6 AL |
1471 | register IO * const io = GvIO(PL_last_in_gv); |
1472 | register const I32 type = PL_op->op_type; | |
1473 | const I32 gimme = GIMME_V; | |
a0d0e21e | 1474 | |
6136c704 AL |
1475 | if (io) { |
1476 | MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar); | |
1477 | if (mg) { | |
1478 | PUSHMARK(SP); | |
1479 | XPUSHs(SvTIED_obj((SV*)io, mg)); | |
1480 | PUTBACK; | |
1481 | ENTER; | |
1482 | call_method("READLINE", gimme); | |
1483 | LEAVE; | |
1484 | SPAGAIN; | |
1485 | if (gimme == G_SCALAR) { | |
1486 | SV* const result = POPs; | |
1487 | SvSetSV_nosteal(TARG, result); | |
1488 | PUSHTARG; | |
1489 | } | |
1490 | RETURN; | |
0b7c7b4f | 1491 | } |
e79b0511 | 1492 | } |
4608196e | 1493 | fp = NULL; |
a0d0e21e LW |
1494 | if (io) { |
1495 | fp = IoIFP(io); | |
1496 | if (!fp) { | |
1497 | if (IoFLAGS(io) & IOf_ARGV) { | |
1498 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1499 | IoLINES(io) = 0; |
3280af22 | 1500 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1501 | IoFLAGS(io) &= ~IOf_START; |
4608196e | 1502 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,NULL); |
c69033f2 | 1503 | sv_setpvn(GvSVn(PL_last_in_gv), "-", 1); |
3280af22 | 1504 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d GS |
1505 | fp = IoIFP(io); |
1506 | goto have_fp; | |
a0d0e21e LW |
1507 | } |
1508 | } | |
3280af22 | 1509 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1510 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1511 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1512 | } |
1513 | } | |
0d44d22b NC |
1514 | else if (type == OP_GLOB) |
1515 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1516 | } |
1517 | else if (type == OP_GLOB) | |
1518 | SP--; | |
a00b5bd3 | 1519 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 | 1520 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 | 1521 | } |
a0d0e21e LW |
1522 | } |
1523 | if (!fp) { | |
041457d9 DM |
1524 | if ((!io || !(IoFLAGS(io) & IOf_START)) |
1525 | && ckWARN2(WARN_GLOB, WARN_CLOSED)) | |
1526 | { | |
3f4520fe | 1527 | if (type == OP_GLOB) |
9014280d | 1528 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a GS |
1529 | "glob failed (can't start child: %s)", |
1530 | Strerror(errno)); | |
69282e91 | 1531 | else |
bc37a18f | 1532 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe | 1533 | } |
54310121 | 1534 | if (gimme == G_SCALAR) { |
79628082 | 1535 | /* undef TARG, and push that undefined value */ |
ba92458f AE |
1536 | if (type != OP_RCATLINE) { |
1537 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1538 | SvOK_off(TARG); |
ba92458f | 1539 | } |
a0d0e21e LW |
1540 | PUSHTARG; |
1541 | } | |
1542 | RETURN; | |
1543 | } | |
a2008d6d | 1544 | have_fp: |
54310121 | 1545 | if (gimme == G_SCALAR) { |
a0d0e21e | 1546 | sv = TARG; |
0f722b55 RGS |
1547 | if (type == OP_RCATLINE && SvGMAGICAL(sv)) |
1548 | mg_get(sv); | |
48de12d9 RGS |
1549 | if (SvROK(sv)) { |
1550 | if (type == OP_RCATLINE) | |
1551 | SvPV_force_nolen(sv); | |
1552 | else | |
1553 | sv_unref(sv); | |
1554 | } | |
f7877b28 NC |
1555 | else if (isGV_with_GP(sv)) { |
1556 | SvPV_force_nolen(sv); | |
1557 | } | |
862a34c6 | 1558 | SvUPGRADE(sv, SVt_PV); |
a0d0e21e | 1559 | tmplen = SvLEN(sv); /* remember if already alloced */ |
bc44a8a2 | 1560 | if (!tmplen && !SvREADONLY(sv)) |
a0d0e21e | 1561 | Sv_Grow(sv, 80); /* try short-buffering it */ |
2b5e58c4 AMS |
1562 | offset = 0; |
1563 | if (type == OP_RCATLINE && SvOK(sv)) { | |
1564 | if (!SvPOK(sv)) { | |
8b6b16e7 | 1565 | SvPV_force_nolen(sv); |
2b5e58c4 | 1566 | } |
a0d0e21e | 1567 | offset = SvCUR(sv); |
2b5e58c4 | 1568 | } |
a0d0e21e | 1569 | } |
54310121 | 1570 | else { |
561b68a9 | 1571 | sv = sv_2mortal(newSV(80)); |
54310121 | 1572 | offset = 0; |
1573 | } | |
fbad3eb5 | 1574 | |
3887d568 AP |
1575 | /* This should not be marked tainted if the fp is marked clean */ |
1576 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1577 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1578 | TAINT; \ | |
1579 | SvTAINTED_on(sv); \ | |
1580 | } | |
1581 | ||
684bef36 | 1582 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1583 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1584 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1585 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1586 | |
a0d0e21e | 1587 | for (;;) { |
09e8efcc | 1588 | PUTBACK; |
fbad3eb5 | 1589 | if (!sv_gets(sv, fp, offset) |
2d726892 TF |
1590 | && (type == OP_GLOB |
1591 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
1592 | || PerlIO_error(fp))) | |
fbad3eb5 | 1593 | { |
760ac839 | 1594 | PerlIO_clearerr(fp); |
a0d0e21e | 1595 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1596 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1597 | if (fp) |
1598 | continue; | |
3280af22 | 1599 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1600 | } |
1601 | else if (type == OP_GLOB) { | |
e476b1b5 | 1602 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
9014280d | 1603 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
4eb79ab5 | 1604 | "glob failed (child exited with status %d%s)", |
894356b3 | 1605 | (int)(STATUS_CURRENT >> 8), |
cf494569 | 1606 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 | 1607 | } |
a0d0e21e | 1608 | } |
54310121 | 1609 | if (gimme == G_SCALAR) { |
ba92458f AE |
1610 | if (type != OP_RCATLINE) { |
1611 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1612 | SvOK_off(TARG); |
ba92458f | 1613 | } |
09e8efcc | 1614 | SPAGAIN; |
a0d0e21e LW |
1615 | PUSHTARG; |
1616 | } | |
3887d568 | 1617 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1618 | RETURN; |
1619 | } | |
3887d568 | 1620 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1621 | IoLINES(io)++; |
b9fee9ba | 1622 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1623 | SvSETMAGIC(sv); |
09e8efcc | 1624 | SPAGAIN; |
a0d0e21e | 1625 | XPUSHs(sv); |
a0d0e21e | 1626 | if (type == OP_GLOB) { |
349d4f2f | 1627 | const char *t1; |
a0d0e21e | 1628 | |
3280af22 | 1629 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
6136c704 | 1630 | char * const tmps = SvEND(sv) - 1; |
aa07b2f6 | 1631 | if (*tmps == *SvPVX_const(PL_rs)) { |
c07a80fd | 1632 | *tmps = '\0'; |
b162af07 | 1633 | SvCUR_set(sv, SvCUR(sv) - 1); |
c07a80fd | 1634 | } |
1635 | } | |
349d4f2f NC |
1636 | for (t1 = SvPVX_const(sv); *t1; t1++) |
1637 | if (!isALPHA(*t1) && !isDIGIT(*t1) && | |
1638 | strchr("$&*(){}[]'\";\\|?<>~`", *t1)) | |
a0d0e21e | 1639 | break; |
349d4f2f | 1640 | if (*t1 && PerlLIO_lstat(SvPVX_const(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1641 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1642 | continue; | |
1643 | } | |
2d79bf7f | 1644 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
d4c19fe8 AL |
1645 | if (ckWARN(WARN_UTF8)) { |
1646 | const U8 * const s = (const U8*)SvPVX_const(sv) + offset; | |
1647 | const STRLEN len = SvCUR(sv) - offset; | |
1648 | const U8 *f; | |
1649 | ||
1650 | if (!is_utf8_string_loc(s, len, &f)) | |
1651 | /* Emulate :encoding(utf8) warning in the same case. */ | |
1652 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
1653 | "utf8 \"\\x%02X\" does not map to Unicode", | |
1654 | f < (U8*)SvEND(sv) ? *f : 0); | |
1655 | } | |
a0d0e21e | 1656 | } |
54310121 | 1657 | if (gimme == G_ARRAY) { |
a0d0e21e | 1658 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1da4ca5f | 1659 | SvPV_shrink_to_cur(sv); |
a0d0e21e | 1660 | } |
561b68a9 | 1661 | sv = sv_2mortal(newSV(80)); |
a0d0e21e LW |
1662 | continue; |
1663 | } | |
54310121 | 1664 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e | 1665 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
d5b5861b NC |
1666 | const STRLEN new_len |
1667 | = SvCUR(sv) < 60 ? 80 : SvCUR(sv)+40; /* allow some slop */ | |
1da4ca5f | 1668 | SvPV_renew(sv, new_len); |
a0d0e21e LW |
1669 | } |
1670 | RETURN; | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | PP(pp_enter) | |
1675 | { | |
27da23d5 | 1676 | dVAR; dSP; |
c09156bb | 1677 | register PERL_CONTEXT *cx; |
533c011a | 1678 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e | 1679 | |
54310121 | 1680 | if (gimme == -1) { |
1681 | if (cxstack_ix >= 0) | |
1682 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1683 | else | |
1684 | gimme = G_SCALAR; | |
1685 | } | |
a0d0e21e LW |
1686 | |
1687 | ENTER; | |
1688 | ||
1689 | SAVETMPS; | |
924508f0 | 1690 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
1691 | |
1692 | RETURN; | |
1693 | } | |
1694 | ||
1695 | PP(pp_helem) | |
1696 | { | |
97aff369 | 1697 | dVAR; dSP; |
760ac839 | 1698 | HE* he; |
ae77835f | 1699 | SV **svp; |
c445ea15 AL |
1700 | SV * const keysv = POPs; |
1701 | HV * const hv = (HV*)POPs; | |
a3b680e6 AL |
1702 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
1703 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
be6c24e0 | 1704 | SV *sv; |
c158a4fd | 1705 | const U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvSHARED_HASH(keysv) : 0; |
9c5ffd7c | 1706 | I32 preeminent = 0; |
a0d0e21e | 1707 | |
d4c19fe8 | 1708 | if (SvTYPE(hv) != SVt_PVHV) |
a0d0e21e | 1709 | RETPUSHUNDEF; |
d4c19fe8 AL |
1710 | |
1711 | if (PL_op->op_private & OPpLVAL_INTRO) { | |
1712 | MAGIC *mg; | |
1713 | HV *stash; | |
1714 | /* does the element we're localizing already exist? */ | |
1715 | preeminent = /* can we determine whether it exists? */ | |
1716 | ( !SvRMAGICAL(hv) | |
1717 | || mg_find((SV*)hv, PERL_MAGIC_env) | |
1718 | || ( (mg = mg_find((SV*)hv, PERL_MAGIC_tied)) | |
1719 | /* Try to preserve the existenceness of a tied hash | |
1720 | * element by using EXISTS and DELETE if possible. | |
1721 | * Fallback to FETCH and STORE otherwise */ | |
1722 | && (stash = SvSTASH(SvRV(SvTIED_obj((SV*)hv, mg)))) | |
1723 | && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) | |
1724 | && gv_fetchmethod_autoload(stash, "DELETE", TRUE) | |
1725 | ) | |
1726 | ) ? hv_exists_ent(hv, keysv, 0) : 1; | |
1727 | } | |
1728 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); | |
1729 | svp = he ? &HeVAL(he) : NULL; | |
a0d0e21e | 1730 | if (lval) { |
3280af22 | 1731 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 1732 | SV* lv; |
1733 | SV* key2; | |
2d8e6c8d | 1734 | if (!defer) { |
be2597df | 1735 | DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv)); |
2d8e6c8d | 1736 | } |
68dc0745 | 1737 | lv = sv_newmortal(); |
1738 | sv_upgrade(lv, SVt_PVLV); | |
1739 | LvTYPE(lv) = 'y'; | |
6136c704 | 1740 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, NULL, 0); |
68dc0745 | 1741 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
b37c2d43 | 1742 | LvTARG(lv) = SvREFCNT_inc_simple(hv); |
68dc0745 | 1743 | LvTARGLEN(lv) = 1; |
1744 | PUSHs(lv); | |
1745 | RETURN; | |
1746 | } | |
533c011a | 1747 | if (PL_op->op_private & OPpLVAL_INTRO) { |
bfcb3514 | 1748 | if (HvNAME_get(hv) && isGV(*svp)) |
533c011a | 1749 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc SC |
1750 | else { |
1751 | if (!preeminent) { | |
1752 | STRLEN keylen; | |
e62f0680 | 1753 | const char * const key = SvPV_const(keysv, keylen); |
7d654f43 | 1754 | SAVEDELETE(hv, savepvn(key,keylen), |
bb7a0f54 | 1755 | SvUTF8(keysv) ? -(I32)keylen : (I32)keylen); |
bfc4de9f | 1756 | } else |
1f5346dc SC |
1757 | save_helem(hv, keysv, svp); |
1758 | } | |
5f05dabc | 1759 | } |
533c011a NIS |
1760 | else if (PL_op->op_private & OPpDEREF) |
1761 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 1762 | } |
3280af22 | 1763 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
1764 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1765 | * Pushing the magical RHS on to the stack is useless, since | |
1766 | * that magic is soon destined to be misled by the local(), | |
1767 | * and thus the later pp_sassign() will fail to mg_get() the | |
1768 | * old value. This should also cure problems with delayed | |
1769 | * mg_get()s. GSAR 98-07-03 */ | |
1770 | if (!lval && SvGMAGICAL(sv)) | |
1771 | sv = sv_mortalcopy(sv); | |
1772 | PUSHs(sv); | |
a0d0e21e LW |
1773 | RETURN; |
1774 | } | |
1775 | ||
1776 | PP(pp_leave) | |
1777 | { | |
27da23d5 | 1778 | dVAR; dSP; |
c09156bb | 1779 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
1780 | SV **newsp; |
1781 | PMOP *newpm; | |
1782 | I32 gimme; | |
1783 | ||
533c011a | 1784 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1785 | cx = &cxstack[cxstack_ix]; |
3280af22 | 1786 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e LW |
1787 | } |
1788 | ||
1789 | POPBLOCK(cx,newpm); | |
1790 | ||
533c011a | 1791 | gimme = OP_GIMME(PL_op, -1); |
54310121 | 1792 | if (gimme == -1) { |
1793 | if (cxstack_ix >= 0) | |
1794 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1795 | else | |
1796 | gimme = G_SCALAR; | |
1797 | } | |
a0d0e21e | 1798 | |
a1f49e72 | 1799 | TAINT_NOT; |
54310121 | 1800 | if (gimme == G_VOID) |
1801 | SP = newsp; | |
1802 | else if (gimme == G_SCALAR) { | |
a3b680e6 | 1803 | register SV **mark; |
54310121 | 1804 | MARK = newsp + 1; |
09256e2f | 1805 | if (MARK <= SP) { |
54310121 | 1806 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1807 | *MARK = TOPs; | |
1808 | else | |
1809 | *MARK = sv_mortalcopy(TOPs); | |
09256e2f | 1810 | } else { |
54310121 | 1811 | MEXTEND(mark,0); |
3280af22 | 1812 | *MARK = &PL_sv_undef; |
a0d0e21e | 1813 | } |
54310121 | 1814 | SP = MARK; |
a0d0e21e | 1815 | } |
54310121 | 1816 | else if (gimme == G_ARRAY) { |
a1f49e72 | 1817 | /* in case LEAVE wipes old return values */ |
a3b680e6 | 1818 | register SV **mark; |
a1f49e72 CS |
1819 | for (mark = newsp + 1; mark <= SP; mark++) { |
1820 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
a0d0e21e | 1821 | *mark = sv_mortalcopy(*mark); |
a1f49e72 CS |
1822 | TAINT_NOT; /* Each item is independent */ |
1823 | } | |
1824 | } | |
a0d0e21e | 1825 | } |
3280af22 | 1826 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e LW |
1827 | |
1828 | LEAVE; | |
1829 | ||
1830 | RETURN; | |
1831 | } | |
1832 | ||
1833 | PP(pp_iter) | |
1834 | { | |
97aff369 | 1835 | dVAR; dSP; |
c09156bb | 1836 | register PERL_CONTEXT *cx; |
dc09a129 | 1837 | SV *sv, *oldsv; |
4633a7c4 | 1838 | AV* av; |
1d7c1841 | 1839 | SV **itersvp; |
a0d0e21e | 1840 | |
924508f0 | 1841 | EXTEND(SP, 1); |
a0d0e21e | 1842 | cx = &cxstack[cxstack_ix]; |
6b35e009 | 1843 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 | 1844 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1845 | |
1d7c1841 | 1846 | itersvp = CxITERVAR(cx); |
4633a7c4 | 1847 | av = cx->blk_loop.iterary; |
89ea2908 GA |
1848 | if (SvTYPE(av) != SVt_PVAV) { |
1849 | /* iterate ($min .. $max) */ | |
1850 | if (cx->blk_loop.iterlval) { | |
1851 | /* string increment */ | |
1852 | register SV* cur = cx->blk_loop.iterlval; | |
4fe3f0fa | 1853 | STRLEN maxlen = 0; |
10edeb5d JH |
1854 | const char *max = |
1855 | SvOK((SV*)av) ? | |
1856 | SvPV_const((SV*)av, maxlen) : (const char *)""; | |
89ea2908 | 1857 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
1d7c1841 | 1858 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1859 | /* safe to reuse old SV */ |
1d7c1841 | 1860 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1861 | } |
1c846c1f | 1862 | else |
eaa5c2d6 GA |
1863 | { |
1864 | /* we need a fresh SV every time so that loop body sees a | |
1865 | * completely new SV for closures/references to work as | |
1866 | * they used to */ | |
dc09a129 | 1867 | oldsv = *itersvp; |
1d7c1841 | 1868 | *itersvp = newSVsv(cur); |
dc09a129 | 1869 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1870 | } |
aa07b2f6 | 1871 | if (strEQ(SvPVX_const(cur), max)) |
89ea2908 GA |
1872 | sv_setiv(cur, 0); /* terminate next time */ |
1873 | else | |
1874 | sv_inc(cur); | |
1875 | RETPUSHYES; | |
1876 | } | |
1877 | RETPUSHNO; | |
1878 | } | |
1879 | /* integer increment */ | |
1880 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) | |
1881 | RETPUSHNO; | |
7f61b687 | 1882 | |
3db8f154 | 1883 | /* don't risk potential race */ |
1d7c1841 | 1884 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1885 | /* safe to reuse old SV */ |
1d7c1841 | 1886 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 | 1887 | } |
1c846c1f | 1888 | else |
eaa5c2d6 GA |
1889 | { |
1890 | /* we need a fresh SV every time so that loop body sees a | |
1891 | * completely new SV for closures/references to work as they | |
1892 | * used to */ | |
dc09a129 | 1893 | oldsv = *itersvp; |
1d7c1841 | 1894 | *itersvp = newSViv(cx->blk_loop.iterix++); |
dc09a129 | 1895 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1896 | } |
89ea2908 GA |
1897 | RETPUSHYES; |
1898 | } | |
1899 | ||
1900 | /* iterate array */ | |
ef3e5ea9 NC |
1901 | if (PL_op->op_private & OPpITER_REVERSED) { |
1902 | /* In reverse, use itermax as the min :-) */ | |
c491ecac | 1903 | if (cx->blk_loop.iterix <= cx->blk_loop.itermax) |
ef3e5ea9 | 1904 | RETPUSHNO; |
a0d0e21e | 1905 | |
ef3e5ea9 | 1906 | if (SvMAGICAL(av) || AvREIFY(av)) { |
c445ea15 | 1907 | SV * const * const svp = av_fetch(av, --cx->blk_loop.iterix, FALSE); |
a0714e2c | 1908 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
1909 | } |
1910 | else { | |
6e585ca0 | 1911 | sv = AvARRAY(av)[--cx->blk_loop.iterix]; |
ef3e5ea9 | 1912 | } |
d42935ef JH |
1913 | } |
1914 | else { | |
ef3e5ea9 NC |
1915 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : |
1916 | AvFILL(av))) | |
1917 | RETPUSHNO; | |
1918 | ||
1919 | if (SvMAGICAL(av) || AvREIFY(av)) { | |
c445ea15 | 1920 | SV * const * const svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE); |
a0714e2c | 1921 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
1922 | } |
1923 | else { | |
1924 | sv = AvARRAY(av)[++cx->blk_loop.iterix]; | |
1925 | } | |
d42935ef | 1926 | } |
ef3e5ea9 | 1927 | |
0565a181 | 1928 | if (sv && SvIS_FREED(sv)) { |
a0714e2c | 1929 | *itersvp = NULL; |
b6c83531 | 1930 | Perl_croak(aTHX_ "Use of freed value in iteration"); |
cccede53 DM |
1931 | } |
1932 | ||
d42935ef | 1933 | if (sv) |
a0d0e21e | 1934 | SvTEMP_off(sv); |
a0d0e21e | 1935 | else |
3280af22 | 1936 | sv = &PL_sv_undef; |
8b530633 | 1937 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc | 1938 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc | 1939 | if (lv && SvREFCNT(lv) > 1) { |
1940 | SvREFCNT_dec(lv); | |
a0714e2c | 1941 | lv = NULL; |
71be2cbc | 1942 | } |
5f05dabc | 1943 | if (lv) |
1944 | SvREFCNT_dec(LvTARG(lv)); | |
1945 | else { | |
561b68a9 | 1946 | lv = cx->blk_loop.iterlval = newSV(0); |
5f05dabc | 1947 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc | 1948 | LvTYPE(lv) = 'y'; |
6136c704 | 1949 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); |
5f05dabc | 1950 | } |
b37c2d43 | 1951 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
5f05dabc | 1952 | LvTARGOFF(lv) = cx->blk_loop.iterix; |
42718184 | 1953 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc | 1954 | sv = (SV*)lv; |
1955 | } | |
a0d0e21e | 1956 | |
dc09a129 | 1957 | oldsv = *itersvp; |
b37c2d43 | 1958 | *itersvp = SvREFCNT_inc_simple_NN(sv); |
dc09a129 DM |
1959 | SvREFCNT_dec(oldsv); |
1960 | ||
a0d0e21e LW |
1961 | RETPUSHYES; |
1962 | } | |
1963 | ||
1964 | PP(pp_subst) | |
1965 | { | |
97aff369 | 1966 | dVAR; dSP; dTARG; |
a0d0e21e LW |
1967 | register PMOP *pm = cPMOP; |
1968 | PMOP *rpm = pm; | |
a0d0e21e LW |
1969 | register char *s; |
1970 | char *strend; | |
1971 | register char *m; | |
5c144d81 | 1972 | const char *c; |
a0d0e21e LW |
1973 | register char *d; |
1974 | STRLEN clen; | |
1975 | I32 iters = 0; | |
1976 | I32 maxiters; | |
1977 | register I32 i; | |
1978 | bool once; | |
71be2cbc | 1979 | bool rxtainted; |
a0d0e21e | 1980 | char *orig; |
22e551b9 | 1981 | I32 r_flags; |
aaa362c4 | 1982 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
1983 | STRLEN len; |
1984 | int force_on_match = 0; | |
0bcc34c2 | 1985 | const I32 oldsave = PL_savestack_ix; |
792b2c16 | 1986 | STRLEN slen; |
f272994b | 1987 | bool doutf8 = FALSE; |
f8c7b90f | 1988 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
1989 | bool is_cow; |
1990 | #endif | |
a0714e2c | 1991 | SV *nsv = NULL; |
a0d0e21e | 1992 | |
5cd24f17 | 1993 | /* known replacement string? */ |
b37c2d43 | 1994 | register SV *dstr = (pm->op_pmflags & PMf_CONST) ? POPs : NULL; |
533c011a | 1995 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1996 | TARG = POPs; |
59f00321 RGS |
1997 | else if (PL_op->op_private & OPpTARGET_MY) |
1998 | GETTARGET; | |
a0d0e21e | 1999 | else { |
54b9620d | 2000 | TARG = DEFSV; |
a0d0e21e | 2001 | EXTEND(SP,1); |
1c846c1f | 2002 | } |
d9f424b2 | 2003 | |
f8c7b90f | 2004 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2005 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, |
2006 | because they make integers such as 256 "false". */ | |
2007 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
2008 | #else | |
765f542d NC |
2009 | if (SvIsCOW(TARG)) |
2010 | sv_force_normal_flags(TARG,0); | |
ed252734 NC |
2011 | #endif |
2012 | if ( | |
f8c7b90f | 2013 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2014 | !is_cow && |
2015 | #endif | |
2016 | (SvREADONLY(TARG) | |
cecf5685 NC |
2017 | || ( ((SvTYPE(TARG) == SVt_PVGV && isGV_with_GP(TARG)) |
2018 | || SvTYPE(TARG) > SVt_PVLV) | |
4ce457a6 | 2019 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) |
d470f89e | 2020 | DIE(aTHX_ PL_no_modify); |
8ec5e241 NIS |
2021 | PUTBACK; |
2022 | ||
d5263905 | 2023 | s = SvPV_mutable(TARG, len); |
68dc0745 | 2024 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 2025 | force_on_match = 1; |
b3eb6a9b | 2026 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 NIS |
2027 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
2028 | if (PL_tainted) | |
b3eb6a9b | 2029 | rxtainted |= 2; |
9212bbba | 2030 | TAINT_NOT; |
a12c0f56 | 2031 | |
a30b2f1f | 2032 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 2033 | |
a0d0e21e LW |
2034 | force_it: |
2035 | if (!pm || !s) | |
2269b42e | 2036 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
2037 | |
2038 | strend = s + len; | |
a30b2f1f | 2039 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
2040 | maxiters = 2 * slen + 10; /* We can match twice at each |
2041 | position, once with zero-length, | |
2042 | second time with non-zero. */ | |
a0d0e21e | 2043 | |
3280af22 NIS |
2044 | if (!rx->prelen && PL_curpm) { |
2045 | pm = PL_curpm; | |
aaa362c4 | 2046 | rx = PM_GETRE(pm); |
a0d0e21e | 2047 | } |
0b78c20a | 2048 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand |
cde0cee5 | 2049 | || (pm->op_pmflags & (PMf_EVAL|PMf_KEEPCOPY)) ) |
ed252734 | 2050 | ? REXEC_COPY_STR : 0; |
f722798b | 2051 | if (SvSCREAM(TARG)) |
22e551b9 | 2052 | r_flags |= REXEC_SCREAM; |
7fba1cd6 | 2053 | |
a0d0e21e | 2054 | orig = m = s; |
bbe252da | 2055 | if (rx->extflags & RXf_USE_INTUIT) { |
ee0b7718 | 2056 | PL_bostr = orig; |
f9f4320a | 2057 | s = CALLREG_INTUIT_START(rx, TARG, s, strend, r_flags, NULL); |
f722798b IZ |
2058 | |
2059 | if (!s) | |
2060 | goto nope; | |
2061 | /* How to do it in subst? */ | |
bbe252da | 2062 | /* if ( (rx->extflags & RXf_CHECK_ALL) |
1c846c1f | 2063 | && !PL_sawampersand |
cde0cee5 | 2064 | && !(pm->op_pmflags & PMf_KEEPCOPY) |
bbe252da YO |
2065 | && ((rx->extflags & RXf_NOSCAN) |
2066 | || !((rx->extflags & RXf_INTUIT_TAIL) | |
f722798b IZ |
2067 | && (r_flags & REXEC_SCREAM)))) |
2068 | goto yup; | |
2069 | */ | |
a0d0e21e | 2070 | } |
71be2cbc | 2071 | |
2072 | /* only replace once? */ | |
a0d0e21e | 2073 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc | 2074 | |
2075 | /* known replacement string? */ | |
f272994b | 2076 | if (dstr) { |
8514a05a JH |
2077 | /* replacement needing upgrading? */ |
2078 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 2079 | nsv = sv_newmortal(); |
4a176938 | 2080 | SvSetSV(nsv, dstr); |
8514a05a JH |
2081 | if (PL_encoding) |
2082 | sv_recode_to_utf8(nsv, PL_encoding); | |
2083 | else | |
2084 | sv_utf8_upgrade(nsv); | |
5c144d81 | 2085 | c = SvPV_const(nsv, clen); |
4a176938 JH |
2086 | doutf8 = TRUE; |
2087 | } | |
2088 | else { | |
5c144d81 | 2089 | c = SvPV_const(dstr, clen); |
4a176938 | 2090 | doutf8 = DO_UTF8(dstr); |
8514a05a | 2091 | } |
f272994b A |
2092 | } |
2093 | else { | |
6136c704 | 2094 | c = NULL; |
f272994b A |
2095 | doutf8 = FALSE; |
2096 | } | |
2097 | ||
71be2cbc | 2098 | /* can do inplace substitution? */ |
ed252734 | 2099 | if (c |
f8c7b90f | 2100 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2101 | && !is_cow |
2102 | #endif | |
de8c5301 | 2103 | && (I32)clen <= rx->minlenret && (once || !(r_flags & REXEC_COPY_STR)) |
bbe252da | 2104 | && !(rx->extflags & RXf_LOOKBEHIND_SEEN) |
db79b45b | 2105 | && (!doutf8 || SvUTF8(TARG))) { |
f9f4320a | 2106 | if (!CALLREGEXEC(rx, s, strend, orig, 0, TARG, NULL, |
f722798b IZ |
2107 | r_flags | REXEC_CHECKED)) |
2108 | { | |
8ec5e241 | 2109 | SPAGAIN; |
3280af22 | 2110 | PUSHs(&PL_sv_no); |
71be2cbc | 2111 | LEAVE_SCOPE(oldsave); |
2112 | RETURN; | |
2113 | } | |
f8c7b90f | 2114 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2115 | if (SvIsCOW(TARG)) { |
2116 | assert (!force_on_match); | |
2117 | goto have_a_cow; | |
2118 | } | |
2119 | #endif | |
71be2cbc | 2120 | if (force_on_match) { |
2121 | force_on_match = 0; | |
2122 | s = SvPV_force(TARG, len); | |
2123 | goto force_it; | |
2124 | } | |
71be2cbc | 2125 | d = s; |
3280af22 | 2126 | PL_curpm = pm; |
71be2cbc | 2127 | SvSCREAM_off(TARG); /* disable possible screamer */ |
2128 | if (once) { | |
48c036b1 | 2129 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d IZ |
2130 | m = orig + rx->startp[0]; |
2131 | d = orig + rx->endp[0]; | |
71be2cbc | 2132 | s = orig; |
2133 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2134 | if (clen) { | |
2135 | Copy(c, m, clen, char); | |
2136 | m += clen; | |
a0d0e21e | 2137 | } |
71be2cbc | 2138 | i = strend - d; |
2139 | if (i > 0) { | |
2140 | Move(d, m, i, char); | |
2141 | m += i; | |
a0d0e21e | 2142 | } |
71be2cbc | 2143 | *m = '\0'; |
2144 | SvCUR_set(TARG, m - s); | |
2145 | } | |
155aba94 | 2146 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc | 2147 | d -= clen; |
2148 | m = d; | |
2149 | sv_chop(TARG, d-i); | |
2150 | s += i; | |
2151 | while (i--) | |
2152 | *--d = *--s; | |
2153 | if (clen) | |
2154 | Copy(c, m, clen, char); | |
2155 | } | |
2156 | else if (clen) { | |
2157 | d -= clen; | |
2158 | sv_chop(TARG, d); | |
2159 | Copy(c, d, clen, char); | |
2160 | } | |
2161 | else { | |
2162 | sv_chop(TARG, d); | |
2163 | } | |
48c036b1 | 2164 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2165 | SPAGAIN; |
3280af22 | 2166 | PUSHs(&PL_sv_yes); |
71be2cbc | 2167 | } |
2168 | else { | |
71be2cbc | 2169 | do { |
2170 | if (iters++ > maxiters) | |
cea2e8a9 | 2171 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2172 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2173 | m = rx->startp[0] + orig; |
155aba94 | 2174 | if ((i = m - s)) { |
71be2cbc | 2175 | if (s != d) |
2176 | Move(s, d, i, char); | |
2177 | d += i; | |
a0d0e21e | 2178 | } |
71be2cbc | 2179 | if (clen) { |
2180 | Copy(c, d, clen, char); | |
2181 | d += clen; | |
2182 | } | |
cf93c79d | 2183 | s = rx->endp[0] + orig; |
f9f4320a | 2184 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
f722798b IZ |
2185 | TARG, NULL, |
2186 | /* don't match same null twice */ | |
2187 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 2188 | if (s != d) { |
2189 | i = strend - s; | |
aa07b2f6 | 2190 | SvCUR_set(TARG, d - SvPVX_const(TARG) + i); |
71be2cbc | 2191 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e | 2192 | } |
48c036b1 | 2193 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2194 | SPAGAIN; |
71be2cbc | 2195 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e | 2196 | } |
80b498e0 | 2197 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 | 2198 | TAINT_IF(rxtainted); |
8ec5e241 NIS |
2199 | if (SvSMAGICAL(TARG)) { |
2200 | PUTBACK; | |
2201 | mg_set(TARG); | |
2202 | SPAGAIN; | |
2203 | } | |
9212bbba | 2204 | SvTAINT(TARG); |
aefe6dfc JH |
2205 | if (doutf8) |
2206 | SvUTF8_on(TARG); | |
71be2cbc | 2207 | LEAVE_SCOPE(oldsave); |
2208 | RETURN; | |
a0d0e21e | 2209 | } |
71be2cbc | 2210 | |
f9f4320a | 2211 | if (CALLREGEXEC(rx, s, strend, orig, 0, TARG, NULL, |
f722798b IZ |
2212 | r_flags | REXEC_CHECKED)) |
2213 | { | |
a0d0e21e LW |
2214 | if (force_on_match) { |
2215 | force_on_match = 0; | |
2216 | s = SvPV_force(TARG, len); | |
2217 | goto force_it; | |
2218 | } | |
f8c7b90f | 2219 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2220 | have_a_cow: |
2221 | #endif | |
48c036b1 | 2222 | rxtainted |= RX_MATCH_TAINTED(rx); |
f2b990bf | 2223 | dstr = newSVpvn(m, s-m); |
cff085c1 | 2224 | SAVEFREESV(dstr); |
ffc61ed2 JH |
2225 | if (DO_UTF8(TARG)) |
2226 | SvUTF8_on(dstr); | |
3280af22 | 2227 | PL_curpm = pm; |
a0d0e21e | 2228 | if (!c) { |
c09156bb | 2229 | register PERL_CONTEXT *cx; |
8ec5e241 | 2230 | SPAGAIN; |
a0d0e21e LW |
2231 | PUSHSUBST(cx); |
2232 | RETURNOP(cPMOP->op_pmreplroot); | |
2233 | } | |
cf93c79d | 2234 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2235 | do { |
2236 | if (iters++ > maxiters) | |
cea2e8a9 | 2237 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2238 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2239 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e LW |
2240 | m = s; |
2241 | s = orig; | |
cf93c79d | 2242 | orig = rx->subbeg; |
a0d0e21e LW |
2243 | s = orig + (m - s); |
2244 | strend = s + (strend - m); | |
2245 | } | |
cf93c79d | 2246 | m = rx->startp[0] + orig; |
db79b45b JH |
2247 | if (doutf8 && !SvUTF8(dstr)) |
2248 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); | |
2249 | else | |
2250 | sv_catpvn(dstr, s, m-s); | |
cf93c79d | 2251 | s = rx->endp[0] + orig; |
a0d0e21e LW |
2252 | if (clen) |
2253 | sv_catpvn(dstr, c, clen); | |
2254 | if (once) | |
2255 | break; | |
f9f4320a | 2256 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
ffc61ed2 | 2257 | TARG, NULL, r_flags)); |
db79b45b JH |
2258 | if (doutf8 && !DO_UTF8(TARG)) |
2259 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); | |
89afcb60 A |
2260 | else |
2261 | sv_catpvn(dstr, s, strend - s); | |
748a9306 | 2262 | |
f8c7b90f | 2263 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2264 | /* The match may make the string COW. If so, brilliant, because that's |
2265 | just saved us one malloc, copy and free - the regexp has donated | |
2266 | the old buffer, and we malloc an entirely new one, rather than the | |
2267 | regexp malloc()ing a buffer and copying our original, only for | |
2268 | us to throw it away here during the substitution. */ | |
2269 | if (SvIsCOW(TARG)) { | |
2270 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
2271 | } else | |
2272 | #endif | |
2273 | { | |
8bd4d4c5 | 2274 | SvPV_free(TARG); |
ed252734 | 2275 | } |
f880fe2f | 2276 | SvPV_set(TARG, SvPVX(dstr)); |
748a9306 LW |
2277 | SvCUR_set(TARG, SvCUR(dstr)); |
2278 | SvLEN_set(TARG, SvLEN(dstr)); | |
f272994b | 2279 | doutf8 |= DO_UTF8(dstr); |
6136c704 | 2280 | SvPV_set(dstr, NULL); |
748a9306 | 2281 | |
48c036b1 | 2282 | TAINT_IF(rxtainted & 1); |
f878fbec | 2283 | SPAGAIN; |
48c036b1 GS |
2284 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2285 | ||
a0d0e21e | 2286 | (void)SvPOK_only(TARG); |
f272994b | 2287 | if (doutf8) |
60aeb6fd | 2288 | SvUTF8_on(TARG); |
48c036b1 | 2289 | TAINT_IF(rxtainted); |
a0d0e21e | 2290 | SvSETMAGIC(TARG); |
9212bbba | 2291 | SvTAINT(TARG); |
4633a7c4 | 2292 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2293 | RETURN; |
2294 | } | |
5cd24f17 | 2295 | goto ret_no; |
a0d0e21e LW |
2296 | |
2297 | nope: | |
1c846c1f | 2298 | ret_no: |
8ec5e241 | 2299 | SPAGAIN; |
3280af22 | 2300 | PUSHs(&PL_sv_no); |
4633a7c4 | 2301 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2302 | RETURN; |
2303 | } | |
2304 | ||
2305 | PP(pp_grepwhile) | |
2306 | { | |
27da23d5 | 2307 | dVAR; dSP; |
a0d0e21e LW |
2308 | |
2309 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2310 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2311 | ++*PL_markstack_ptr; | |
a0d0e21e LW |
2312 | LEAVE; /* exit inner scope */ |
2313 | ||
2314 | /* All done yet? */ | |
3280af22 | 2315 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2316 | I32 items; |
c4420975 | 2317 | const I32 gimme = GIMME_V; |
a0d0e21e LW |
2318 | |
2319 | LEAVE; /* exit outer scope */ | |
2320 | (void)POPMARK; /* pop src */ | |
3280af22 | 2321 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2322 | (void)POPMARK; /* pop dst */ |
3280af22 | 2323 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2324 | if (gimme == G_SCALAR) { |
7cc47870 | 2325 | if (PL_op->op_private & OPpGREP_LEX) { |
c4420975 | 2326 | SV* const sv = sv_newmortal(); |
7cc47870 RGS |
2327 | sv_setiv(sv, items); |
2328 | PUSHs(sv); | |
2329 | } | |
2330 | else { | |
2331 | dTARGET; | |
2332 | XPUSHi(items); | |
2333 | } | |
a0d0e21e | 2334 | } |
54310121 | 2335 | else if (gimme == G_ARRAY) |
2336 | SP += items; | |
a0d0e21e LW |
2337 | RETURN; |
2338 | } | |
2339 | else { | |
2340 | SV *src; | |
2341 | ||
2342 | ENTER; /* enter inner scope */ | |
1d7c1841 | 2343 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2344 | |
3280af22 | 2345 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2346 | SvTEMP_off(src); |
59f00321 RGS |
2347 | if (PL_op->op_private & OPpGREP_LEX) |
2348 | PAD_SVl(PL_op->op_targ) = src; | |
2349 | else | |
2350 | DEFSV = src; | |
a0d0e21e LW |
2351 | |
2352 | RETURNOP(cLOGOP->op_other); | |
2353 | } | |
2354 | } | |
2355 | ||
2356 | PP(pp_leavesub) | |
2357 | { | |
27da23d5 | 2358 | dVAR; dSP; |
a0d0e21e LW |
2359 | SV **mark; |
2360 | SV **newsp; | |
2361 | PMOP *newpm; | |
2362 | I32 gimme; | |
c09156bb | 2363 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2364 | SV *sv; |
a0d0e21e | 2365 | |
9850bf21 RH |
2366 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2367 | return 0; | |
2368 | ||
a0d0e21e | 2369 | POPBLOCK(cx,newpm); |
5dd42e15 | 2370 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2371 | |
a1f49e72 | 2372 | TAINT_NOT; |
a0d0e21e LW |
2373 | if (gimme == G_SCALAR) { |
2374 | MARK = newsp + 1; | |
a29cdaf0 | 2375 | if (MARK <= SP) { |
a8bba7fa | 2376 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 IZ |
2377 | if (SvTEMP(TOPs)) { |
2378 | *MARK = SvREFCNT_inc(TOPs); | |
2379 | FREETMPS; | |
2380 | sv_2mortal(*MARK); | |
cd06dffe GS |
2381 | } |
2382 | else { | |
959e3673 | 2383 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2384 | FREETMPS; |
959e3673 GS |
2385 | *MARK = sv_mortalcopy(sv); |
2386 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2387 | } |
cd06dffe GS |
2388 | } |
2389 | else | |
a29cdaf0 | 2390 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe GS |
2391 | } |
2392 | else { | |
f86702cc | 2393 | MEXTEND(MARK, 0); |
3280af22 | 2394 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2395 | } |
2396 | SP = MARK; | |
2397 | } | |
54310121 | 2398 | else if (gimme == G_ARRAY) { |
f86702cc | 2399 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 | 2400 | if (!SvTEMP(*MARK)) { |
f86702cc | 2401 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2402 | TAINT_NOT; /* Each item is independent */ |
2403 | } | |
f86702cc | 2404 | } |
a0d0e21e | 2405 | } |
f86702cc | 2406 | PUTBACK; |
1c846c1f | 2407 | |
5dd42e15 DM |
2408 | LEAVE; |
2409 | cxstack_ix--; | |
b0d9ce38 | 2410 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2411 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2412 | |
b0d9ce38 | 2413 | LEAVESUB(sv); |
f39bc417 | 2414 | return cx->blk_sub.retop; |
a0d0e21e LW |
2415 | } |
2416 | ||
cd06dffe GS |
2417 | /* This duplicates the above code because the above code must not |
2418 | * get any slower by more conditions */ | |
2419 | PP(pp_leavesublv) | |
2420 | { | |
27da23d5 | 2421 | dVAR; dSP; |
cd06dffe GS |
2422 | SV **mark; |
2423 | SV **newsp; | |
2424 | PMOP *newpm; | |
2425 | I32 gimme; | |
2426 | register PERL_CONTEXT *cx; | |
b0d9ce38 | 2427 | SV *sv; |
cd06dffe | 2428 | |
9850bf21 RH |
2429 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2430 | return 0; | |
2431 | ||
cd06dffe | 2432 | POPBLOCK(cx,newpm); |
5dd42e15 | 2433 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2434 | |
cd06dffe GS |
2435 | TAINT_NOT; |
2436 | ||
cc8d50a7 | 2437 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { |
cd06dffe GS |
2438 | /* We are an argument to a function or grep(). |
2439 | * This kind of lvalueness was legal before lvalue | |
2440 | * subroutines too, so be backward compatible: | |
2441 | * cannot report errors. */ | |
2442 | ||
2443 | /* Scalar context *is* possible, on the LHS of -> only, | |
2444 | * as in f()->meth(). But this is not an lvalue. */ | |
2445 | if (gimme == G_SCALAR) | |
2446 | goto temporise; | |
2447 | if (gimme == G_ARRAY) { | |
a8bba7fa | 2448 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe GS |
2449 | goto temporise_array; |
2450 | EXTEND_MORTAL(SP - newsp); | |
2451 | for (mark = newsp + 1; mark <= SP; mark++) { | |
2452 | if (SvTEMP(*mark)) | |
6f207bd3 | 2453 | NOOP; |
cd06dffe GS |
2454 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) |
2455 | *mark = sv_mortalcopy(*mark); | |
2456 | else { | |
2457 | /* Can be a localized value subject to deletion. */ | |
2458 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2459 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2460 | } |
2461 | } | |
2462 | } | |
2463 | } | |
cc8d50a7 | 2464 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ |
cd06dffe GS |
2465 | /* Here we go for robustness, not for speed, so we change all |
2466 | * the refcounts so the caller gets a live guy. Cannot set | |
2467 | * TEMP, so sv_2mortal is out of question. */ | |
a8bba7fa | 2468 | if (!CvLVALUE(cx->blk_sub.cv)) { |
5dd42e15 DM |
2469 | LEAVE; |
2470 | cxstack_ix--; | |
b0d9ce38 | 2471 | POPSUB(cx,sv); |
d470f89e | 2472 | PL_curpm = newpm; |
b0d9ce38 | 2473 | LEAVESUB(sv); |
d470f89e GS |
2474 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2475 | } | |
cd06dffe GS |
2476 | if (gimme == G_SCALAR) { |
2477 | MARK = newsp + 1; | |
2478 | EXTEND_MORTAL(1); | |
2479 | if (MARK == SP) { | |
f9bc45ef TP |
2480 | /* Temporaries are bad unless they happen to be elements |
2481 | * of a tied hash or array */ | |
2482 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY) && | |
2483 | !(SvRMAGICAL(TOPs) && mg_find(TOPs, PERL_MAGIC_tiedelem))) { | |
5dd42e15 DM |
2484 | LEAVE; |
2485 | cxstack_ix--; | |
b0d9ce38 | 2486 | POPSUB(cx,sv); |
d470f89e | 2487 | PL_curpm = newpm; |
b0d9ce38 | 2488 | LEAVESUB(sv); |
e9f19e3c HS |
2489 | DIE(aTHX_ "Can't return %s from lvalue subroutine", |
2490 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" | |
2491 | : "a readonly value" : "a temporary"); | |
d470f89e | 2492 | } |
cd06dffe GS |
2493 | else { /* Can be a localized value |
2494 | * subject to deletion. */ | |
2495 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2496 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2497 | } |
2498 | } | |
d470f89e | 2499 | else { /* Should not happen? */ |
5dd42e15 DM |
2500 | LEAVE; |
2501 | cxstack_ix--; | |
b0d9ce38 | 2502 | POPSUB(cx,sv); |
d470f89e | 2503 | PL_curpm = newpm; |
b0d9ce38 | 2504 | LEAVESUB(sv); |
d470f89e | 2505 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe | 2506 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e | 2507 | } |
cd06dffe GS |
2508 | SP = MARK; |
2509 | } | |
2510 | else if (gimme == G_ARRAY) { | |
2511 | EXTEND_MORTAL(SP - newsp); | |
2512 | for (mark = newsp + 1; mark <= SP; mark++) { | |
f206cdda AMS |
2513 | if (*mark != &PL_sv_undef |
2514 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { | |
d470f89e GS |
2515 | /* Might be flattened array after $#array = */ |
2516 | PUTBACK; | |
5dd42e15 DM |
2517 | LEAVE; |
2518 | cxstack_ix--; | |
b0d9ce38 | 2519 | POPSUB(cx,sv); |
d470f89e | 2520 | PL_curpm = newpm; |
b0d9ce38 | 2521 | LEAVESUB(sv); |
f206cdda AMS |
2522 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2523 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
d470f89e | 2524 | } |
cd06dffe | 2525 | else { |
cd06dffe GS |
2526 | /* Can be a localized value subject to deletion. */ |
2527 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2528 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2529 | } |
2530 | } | |
2531 | } | |
2532 | } | |
2533 | else { | |
2534 | if (gimme == G_SCALAR) { | |
2535 | temporise: | |
2536 | MARK = newsp + 1; | |
2537 | if (MARK <= SP) { | |
a8bba7fa | 2538 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe GS |
2539 | if (SvTEMP(TOPs)) { |
2540 | *MARK = SvREFCNT_inc(TOPs); | |
2541 | FREETMPS; | |
2542 | sv_2mortal(*MARK); | |
2543 | } | |
2544 | else { | |
959e3673 | 2545 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe | 2546 | FREETMPS; |
959e3673 GS |
2547 | *MARK = sv_mortalcopy(sv); |
2548 | SvREFCNT_dec(sv); | |
cd06dffe GS |
2549 | } |
2550 | } | |
2551 | else | |
2552 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
2553 | } | |
2554 | else { | |
2555 | MEXTEND(MARK, 0); | |
2556 | *MARK = &PL_sv_undef; | |
2557 | } | |
2558 | SP = MARK; | |
2559 | } | |
2560 | else if (gimme == G_ARRAY) { | |
2561 | temporise_array: | |
2562 | for (MARK = newsp + 1; MARK <= SP; MARK++) { | |
2563 | if (!SvTEMP(*MARK)) { | |
2564 | *MARK = sv_mortalcopy(*MARK); | |
2565 | TAINT_NOT; /* Each item is independent */ | |
2566 | } | |
2567 | } | |
2568 | } | |
2569 | } | |
2570 | PUTBACK; | |
1c846c1f | 2571 | |
5dd42e15 DM |
2572 | LEAVE; |
2573 | cxstack_ix--; | |
b0d9ce38 | 2574 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe GS |
2575 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2576 | ||
b0d9ce38 | 2577 | LEAVESUB(sv); |
f39bc417 | 2578 | return cx->blk_sub.retop; |
cd06dffe GS |
2579 | } |
2580 | ||
a0d0e21e LW |
2581 | PP(pp_entersub) |
2582 | { | |
27da23d5 | 2583 | dVAR; dSP; dPOPss; |
a0d0e21e | 2584 | GV *gv; |
a0d0e21e | 2585 | register CV *cv; |
c09156bb | 2586 | register PERL_CONTEXT *cx; |
5d94fbed | 2587 | I32 gimme; |
a9c4fd4e | 2588 | const bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2589 | |
2590 | if (!sv) | |
cea2e8a9 | 2591 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e | 2592 | switch (SvTYPE(sv)) { |
f1025168 NC |
2593 | /* This is overwhelming the most common case: */ |
2594 | case SVt_PVGV: | |
f730a42d NC |
2595 | if (!(cv = GvCVu((GV*)sv))) { |
2596 | HV *stash; | |
f2c0649b | 2597 | cv = sv_2cv(sv, &stash, &gv, 0); |
f730a42d | 2598 | } |
f1025168 NC |
2599 | if (!cv) { |
2600 | ENTER; | |
2601 | SAVETMPS; | |
2602 | goto try_autoload; | |
2603 | } | |
2604 | break; | |
a0d0e21e LW |
2605 | default: |
2606 | if (!SvROK(sv)) { | |
a9c4fd4e | 2607 | const char *sym; |
780a5241 | 2608 | STRLEN len; |
3280af22 | 2609 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a | 2610 | if (hasargs) |
3280af22 | 2611 | SP = PL_stack_base + POPMARK; |
a0d0e21e | 2612 | RETURN; |
fb73857a | 2613 | } |
15ff848f CS |
2614 | if (SvGMAGICAL(sv)) { |
2615 | mg_get(sv); | |
f5f1d18e AMS |
2616 | if (SvROK(sv)) |
2617 | goto got_rv; | |
780a5241 NC |
2618 | if (SvPOKp(sv)) { |
2619 | sym = SvPVX_const(sv); | |
2620 | len = SvCUR(sv); | |
2621 | } else { | |
2622 | sym = NULL; | |
2623 | len = 0; | |
2624 | } | |
15ff848f | 2625 | } |
a9c4fd4e | 2626 | else { |
780a5241 | 2627 | sym = SvPV_const(sv, len); |
a9c4fd4e | 2628 | } |
15ff848f | 2629 | if (!sym) |
cea2e8a9 | 2630 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2631 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 | 2632 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
780a5241 | 2633 | cv = get_cvn_flags(sym, len, GV_ADD|SvUTF8(sv)); |
a0d0e21e LW |
2634 | break; |
2635 | } | |
f5f1d18e | 2636 | got_rv: |
f5284f61 | 2637 | { |
823a54a3 | 2638 | SV * const * sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
f5284f61 IZ |
2639 | tryAMAGICunDEREF(to_cv); |
2640 | } | |
a0d0e21e LW |
2641 | cv = (CV*)SvRV(sv); |
2642 | if (SvTYPE(cv) == SVt_PVCV) | |
2643 | break; | |
2644 | /* FALL THROUGH */ | |
2645 | case SVt_PVHV: | |
2646 | case SVt_PVAV: | |
cea2e8a9 | 2647 | DIE(aTHX_ "Not a CODE reference"); |
f1025168 | 2648 | /* This is the second most common case: */ |
a0d0e21e LW |
2649 | case SVt_PVCV: |
2650 | cv = (CV*)sv; | |
2651 | break; | |
a0d0e21e LW |
2652 | } |
2653 | ||
2654 | ENTER; | |
2655 | SAVETMPS; | |
2656 | ||
2657 | retry: | |
a0d0e21e | 2658 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
2f349aa0 NC |
2659 | GV* autogv; |
2660 | SV* sub_name; | |
2661 | ||
2662 | /* anonymous or undef'd function leaves us no recourse */ | |
2663 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
2664 | DIE(aTHX_ "Undefined subroutine called"); | |
2665 | ||
2666 | /* autoloaded stub? */ | |
2667 | if (cv != GvCV(gv)) { | |
2668 | cv = GvCV(gv); | |
2669 | } | |
2670 | /* should call AUTOLOAD now? */ | |
2671 | else { | |
2672 | try_autoload: | |
2673 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), | |
2674 | FALSE))) | |
2675 | { | |
2676 | cv = GvCV(autogv); | |
2677 | } | |
2678 | /* sorry */ | |
2679 | else { | |
2680 | sub_name = sv_newmortal(); | |
6136c704 | 2681 | gv_efullname3(sub_name, gv, NULL); |
be2597df | 2682 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", SVfARG(sub_name)); |
2f349aa0 NC |
2683 | } |
2684 | } | |
2685 | if (!cv) | |
2686 | DIE(aTHX_ "Not a CODE reference"); | |
2687 | goto retry; | |
a0d0e21e LW |
2688 | } |
2689 | ||
54310121 | 2690 | gimme = GIMME_V; |
67caa1fe | 2691 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
06492da6 SF |
2692 | if (CvASSERTION(cv) && PL_DBassertion) |
2693 | sv_setiv(PL_DBassertion, 1); | |
2694 | ||
005a8a35 | 2695 | Perl_get_db_sub(aTHX_ &sv, cv); |
a9ef256d NC |
2696 | if (CvISXSUB(cv)) |
2697 | PL_curcopdb = PL_curcop; | |
2698 | cv = GvCV(PL_DBsub); | |
2699 | ||
ccafdc96 RGS |
2700 | if (!cv || (!CvXSUB(cv) && !CvSTART(cv))) |
2701 | DIE(aTHX_ "No DB::sub routine defined"); | |
67caa1fe | 2702 | } |
a0d0e21e | 2703 | |
aed2304a | 2704 | if (!(CvISXSUB(cv))) { |
f1025168 | 2705 | /* This path taken at least 75% of the time */ |
a0d0e21e LW |
2706 | dMARK; |
2707 | register I32 items = SP - MARK; | |
0bcc34c2 | 2708 | AV* const padlist = CvPADLIST(cv); |
a0d0e21e LW |
2709 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2710 | PUSHSUB(cx); | |
f39bc417 | 2711 | cx->blk_sub.retop = PL_op->op_next; |
a0d0e21e | 2712 | CvDEPTH(cv)++; |
6b35e009 GS |
2713 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2714 | * that eval'' ops within this sub know the correct lexical space. | |
a3985cdc DM |
2715 | * Owing the speed considerations, we choose instead to search for |
2716 | * the cv using find_runcv() when calling doeval(). | |
6b35e009 | 2717 | */ |
3a76ca88 RGS |
2718 | if (CvDEPTH(cv) >= 2) { |
2719 | PERL_STACK_OVERFLOW_CHECK(); | |
2720 | pad_push(padlist, CvDEPTH(cv)); | |
a0d0e21e | 2721 | } |
3a76ca88 RGS |
2722 | SAVECOMPPAD(); |
2723 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); | |
2724 | if (hasargs) { | |
0bcc34c2 | 2725 | AV* const av = (AV*)PAD_SVl(0); |
221373f0 GS |
2726 | if (AvREAL(av)) { |
2727 | /* @_ is normally not REAL--this should only ever | |
2728 | * happen when DB::sub() calls things that modify @_ */ | |
2729 | av_clear(av); | |
2730 | AvREAL_off(av); | |
2731 | AvREIFY_on(av); | |
2732 | } | |
3280af22 | 2733 | cx->blk_sub.savearray = GvAV(PL_defgv); |
b37c2d43 | 2734 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc_simple(av); |
dd2155a4 | 2735 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2736 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2737 | ++MARK; |
2738 | ||
2739 | if (items > AvMAX(av) + 1) { | |
504618e9 | 2740 | SV **ary = AvALLOC(av); |
a0d0e21e LW |
2741 | if (AvARRAY(av) != ary) { |
2742 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
9c6bc640 | 2743 | AvARRAY(av) = ary; |
a0d0e21e LW |
2744 | } |
2745 | if (items > AvMAX(av) + 1) { | |
2746 | AvMAX(av) = items - 1; | |
2747 | Renew(ary,items,SV*); | |
2748 | AvALLOC(av) = ary; | |
9c6bc640 | 2749 | AvARRAY(av) = ary; |
a0d0e21e LW |
2750 | } |
2751 | } | |
2752 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2753 | AvFILLp(av) = items - 1; |
1c846c1f | 2754 | |
a0d0e21e LW |
2755 | while (items--) { |
2756 | if (*MARK) | |
2757 | SvTEMP_off(*MARK); | |
2758 | MARK++; | |
2759 | } | |
2760 | } | |
4a925ff6 GS |
2761 | /* warning must come *after* we fully set up the context |
2762 | * stuff so that __WARN__ handlers can safely dounwind() | |
2763 | * if they want to | |
2764 | */ | |
2765 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) | |
2766 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) | |
2767 | sub_crush_depth(cv); | |
77a005ab | 2768 | #if 0 |
bf49b057 | 2769 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
6c9570dc | 2770 | "%p entersub returning %p\n", (void*)thr, (void*)CvSTART(cv))); |
77a005ab | 2771 | #endif |
a0d0e21e LW |
2772 | RETURNOP(CvSTART(cv)); |
2773 | } | |
f1025168 | 2774 | else { |
3a76ca88 | 2775 | I32 markix = TOPMARK; |
f1025168 | 2776 | |
3a76ca88 | 2777 | PUTBACK; |
f1025168 | 2778 | |
3a76ca88 RGS |
2779 | if (!hasargs) { |
2780 | /* Need to copy @_ to stack. Alternative may be to | |
2781 | * switch stack to @_, and copy return values | |
2782 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
2783 | AV * const av = GvAV(PL_defgv); | |
2784 | const I32 items = AvFILLp(av) + 1; /* @_ is not tieable */ | |
2785 | ||
2786 | if (items) { | |
2787 | /* Mark is at the end of the stack. */ | |
2788 | EXTEND(SP, items); | |
2789 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2790 | SP += items; | |
2791 | PUTBACK ; | |
2792 | } | |
2793 | } | |
2794 | /* We assume first XSUB in &DB::sub is the called one. */ | |
2795 | if (PL_curcopdb) { | |
2796 | SAVEVPTR(PL_curcop); | |
2797 | PL_curcop = PL_curcopdb; | |
2798 | PL_curcopdb = NULL; | |
2799 | } | |
2800 | /* Do we need to open block here? XXXX */ | |
2801 | if (CvXSUB(cv)) /* XXX this is supposed to be true */ | |
2802 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
2803 | ||
2804 | /* Enforce some sanity in scalar context. */ | |
2805 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { | |
2806 | if (markix > PL_stack_sp - PL_stack_base) | |
2807 | *(PL_stack_base + markix) = &PL_sv_undef; | |
2808 | else | |
2809 | *(PL_stack_base + markix) = *PL_stack_sp; | |
2810 | PL_stack_sp = PL_stack_base + markix; | |
2811 | } | |
f1025168 NC |
2812 | LEAVE; |
2813 | return NORMAL; | |
2814 | } | |
a0d0e21e LW |
2815 | } |
2816 | ||
44a8e56a | 2817 | void |
864dbfa3 | 2818 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2819 | { |
2820 | if (CvANON(cv)) | |
9014280d | 2821 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 2822 | else { |
aec46f14 | 2823 | SV* const tmpstr = sv_newmortal(); |
6136c704 | 2824 | gv_efullname3(tmpstr, CvGV(cv), NULL); |
35c1215d | 2825 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
be2597df | 2826 | SVfARG(tmpstr)); |
44a8e56a | 2827 | } |
2828 | } | |
2829 | ||
a0d0e21e LW |
2830 | PP(pp_aelem) |
2831 | { | |
97aff369 | 2832 | dVAR; dSP; |
a0d0e21e | 2833 | SV** svp; |
a3b680e6 | 2834 | SV* const elemsv = POPs; |
d804643f | 2835 | IV elem = SvIV(elemsv); |
0bcc34c2 | 2836 | AV* const av = (AV*)POPs; |
e1ec3a88 AL |
2837 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
2838 | const U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > av_len(av)); | |
be6c24e0 | 2839 | SV *sv; |
a0d0e21e | 2840 | |
e35c1634 | 2841 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
95b63a38 JH |
2842 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
2843 | "Use of reference \"%"SVf"\" as array index", | |
be2597df | 2844 | SVfARG(elemsv)); |
748a9306 | 2845 | if (elem > 0) |
fc15ae8f | 2846 | elem -= CopARYBASE_get(PL_curcop); |
a0d0e21e LW |
2847 | if (SvTYPE(av) != SVt_PVAV) |
2848 | RETPUSHUNDEF; | |
68dc0745 | 2849 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2850 | if (lval) { |
2b573ace | 2851 | #ifdef PERL_MALLOC_WRAP |
2b573ace | 2852 | if (SvUOK(elemsv)) { |
a9c4fd4e | 2853 | const UV uv = SvUV(elemsv); |
2b573ace JH |
2854 | elem = uv > IV_MAX ? IV_MAX : uv; |
2855 | } | |
2856 | else if (SvNOK(elemsv)) | |
2857 | elem = (IV)SvNV(elemsv); | |
a3b680e6 AL |
2858 | if (elem > 0) { |
2859 | static const char oom_array_extend[] = | |
2860 | "Out of memory during array extend"; /* Duplicated in av.c */ | |
2b573ace | 2861 | MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend); |
a3b680e6 | 2862 | } |
2b573ace | 2863 | #endif |
3280af22 | 2864 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 2865 | SV* lv; |
2866 | if (!defer) | |
cea2e8a9 | 2867 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 2868 | lv = sv_newmortal(); |
2869 | sv_upgrade(lv, SVt_PVLV); | |
2870 | LvTYPE(lv) = 'y'; | |
a0714e2c | 2871 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); |
b37c2d43 | 2872 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
68dc0745 | 2873 | LvTARGOFF(lv) = elem; |
2874 | LvTARGLEN(lv) = 1; | |
2875 | PUSHs(lv); | |
2876 | RETURN; | |
2877 | } | |
bfc4de9f | 2878 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 | 2879 | save_aelem(av, elem, svp); |
533c011a NIS |
2880 | else if (PL_op->op_private & OPpDEREF) |
2881 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 2882 | } |
3280af22 | 2883 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
2884 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2885 | sv = sv_mortalcopy(sv); | |
2886 | PUSHs(sv); | |
a0d0e21e LW |
2887 | RETURN; |
2888 | } | |
2889 | ||
02a9e968 | 2890 | void |
864dbfa3 | 2891 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 | 2892 | { |
5b295bef | 2893 | SvGETMAGIC(sv); |
02a9e968 CS |
2894 | if (!SvOK(sv)) { |
2895 | if (SvREADONLY(sv)) | |
cea2e8a9 | 2896 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc | 2897 | if (SvTYPE(sv) < SVt_RV) |
2898 | sv_upgrade(sv, SVt_RV); | |
2899 | else if (SvTYPE(sv) >= SVt_PV) { | |
8bd4d4c5 | 2900 | SvPV_free(sv); |
b162af07 SP |
2901 | SvLEN_set(sv, 0); |
2902 | SvCUR_set(sv, 0); | |
5f05dabc | 2903 | } |
68dc0745 | 2904 | switch (to_what) { |
5f05dabc | 2905 | case OPpDEREF_SV: |
561b68a9 | 2906 | SvRV_set(sv, newSV(0)); |
5f05dabc | 2907 | break; |
2908 | case OPpDEREF_AV: | |
b162af07 | 2909 | SvRV_set(sv, (SV*)newAV()); |
5f05dabc | 2910 | break; |
2911 | case OPpDEREF_HV: | |
b162af07 | 2912 | SvRV_set(sv, (SV*)newHV()); |
5f05dabc | 2913 | break; |
2914 | } | |
02a9e968 CS |
2915 | SvROK_on(sv); |
2916 | SvSETMAGIC(sv); | |
2917 | } | |
2918 | } | |
2919 | ||
a0d0e21e LW |
2920 | PP(pp_method) |
2921 | { | |
97aff369 | 2922 | dVAR; dSP; |
890ce7af | 2923 | SV* const sv = TOPs; |
f5d5a27c CS |
2924 | |
2925 | if (SvROK(sv)) { | |
890ce7af | 2926 | SV* const rsv = SvRV(sv); |
f5d5a27c CS |
2927 | if (SvTYPE(rsv) == SVt_PVCV) { |
2928 | SETs(rsv); | |
2929 | RETURN; | |
2930 | } | |
2931 | } | |
2932 | ||
4608196e | 2933 | SETs(method_common(sv, NULL)); |
f5d5a27c CS |
2934 | RETURN; |
2935 | } | |
2936 | ||
2937 | PP(pp_method_named) | |
2938 | { | |
97aff369 | 2939 | dVAR; dSP; |
890ce7af | 2940 | SV* const sv = cSVOP_sv; |
c158a4fd | 2941 | U32 hash = SvSHARED_HASH(sv); |
f5d5a27c CS |
2942 | |
2943 | XPUSHs(method_common(sv, &hash)); | |
2944 | RETURN; | |
2945 | } | |
2946 | ||
2947 | STATIC SV * | |
2948 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
2949 | { | |
97aff369 | 2950 | dVAR; |
a0d0e21e LW |
2951 | SV* ob; |
2952 | GV* gv; | |
56304f61 | 2953 | HV* stash; |
f5d5a27c | 2954 | STRLEN namelen; |
6136c704 | 2955 | const char* packname = NULL; |
a0714e2c | 2956 | SV *packsv = NULL; |
ac91690f | 2957 | STRLEN packlen; |
46c461b5 AL |
2958 | const char * const name = SvPV_const(meth, namelen); |
2959 | SV * const sv = *(PL_stack_base + TOPMARK + 1); | |
f5d5a27c | 2960 | |
4f1b7578 SC |
2961 | if (!sv) |
2962 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); | |
2963 | ||
5b295bef | 2964 | SvGETMAGIC(sv); |
a0d0e21e | 2965 | if (SvROK(sv)) |
16d20bd9 | 2966 | ob = (SV*)SvRV(sv); |
a0d0e21e LW |
2967 | else { |
2968 | GV* iogv; | |
a0d0e21e | 2969 | |
af09ea45 | 2970 | /* this isn't a reference */ |
5c144d81 | 2971 | if(SvOK(sv) && (packname = SvPV_const(sv, packlen))) { |
b464bac0 | 2972 | const HE* const he = hv_fetch_ent(PL_stashcache, sv, 0, 0); |
081fc587 | 2973 | if (he) { |
5e6396ae | 2974 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
081fc587 AB |
2975 | goto fetch; |
2976 | } | |
2977 | } | |
2978 | ||
a0d0e21e | 2979 | if (!SvOK(sv) || |
05f5af9a | 2980 | !(packname) || |
f776e3cd | 2981 | !(iogv = gv_fetchsv(sv, 0, SVt_PVIO)) || |
a0d0e21e LW |
2982 | !(ob=(SV*)GvIO(iogv))) |
2983 | { | |
af09ea45 | 2984 | /* this isn't the name of a filehandle either */ |
1c846c1f | 2985 | if (!packname || |
fd400ab9 | 2986 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 2987 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
2988 | : !isIDFIRST(*packname) |
2989 | )) | |
2990 | { | |
f5d5a27c CS |
2991 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
2992 | SvOK(sv) ? "without a package or object reference" | |
2993 | : "on an undefined value"); | |
834a4ddd | 2994 | } |
af09ea45 | 2995 | /* assume it's a package name */ |
da51bb9b | 2996 | stash = gv_stashpvn(packname, packlen, 0); |
0dae17bd GS |
2997 | if (!stash) |
2998 | packsv = sv; | |
081fc587 | 2999 | else { |
d4c19fe8 | 3000 | SV* const ref = newSViv(PTR2IV(stash)); |
7e8961ec AB |
3001 | hv_store(PL_stashcache, packname, packlen, ref, 0); |
3002 | } | |
ac91690f | 3003 | goto fetch; |
a0d0e21e | 3004 | } |
af09ea45 | 3005 | /* it _is_ a filehandle name -- replace with a reference */ |
3280af22 | 3006 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e LW |
3007 | } |
3008 | ||
af09ea45 | 3009 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 GS |
3010 | if (!ob || !(SvOBJECT(ob) |
3011 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) | |
3012 | && SvOBJECT(ob)))) | |
3013 | { | |
f5d5a27c CS |
3014 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
3015 | name); | |
f0d43078 | 3016 | } |
a0d0e21e | 3017 | |
56304f61 | 3018 | stash = SvSTASH(ob); |
a0d0e21e | 3019 | |
ac91690f | 3020 | fetch: |
af09ea45 IK |
3021 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3022 | gv_fetchmethod can cope (it seems they can) */ | |
3023 | ||
f5d5a27c CS |
3024 | /* shortcut for simple names */ |
3025 | if (hashp) { | |
b464bac0 | 3026 | const HE* const he = hv_fetch_ent(stash, meth, 0, *hashp); |
f5d5a27c CS |
3027 | if (he) { |
3028 | gv = (GV*)HeVAL(he); | |
3029 | if (isGV(gv) && GvCV(gv) && | |
3030 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) | |
3031 | return (SV*)GvCV(gv); | |
3032 | } | |
3033 | } | |
3034 | ||
0dae17bd | 3035 | gv = gv_fetchmethod(stash ? stash : (HV*)packsv, name); |
af09ea45 | 3036 | |
56304f61 | 3037 | if (!gv) { |
af09ea45 IK |
3038 | /* This code tries to figure out just what went wrong with |
3039 | gv_fetchmethod. It therefore needs to duplicate a lot of | |
3040 | the internals of that function. We can't move it inside | |
3041 | Perl_gv_fetchmethod_autoload(), however, since that would | |
3042 | cause UNIVERSAL->can("NoSuchPackage::foo") to croak, and we | |
3043 | don't want that. | |
3044 | */ | |
a9c4fd4e | 3045 | const char* leaf = name; |
6136c704 | 3046 | const char* sep = NULL; |
a9c4fd4e | 3047 | const char* p; |
56304f61 CS |
3048 | |
3049 | for (p = name; *p; p++) { | |
3050 | if (*p == '\'') | |
3051 | sep = p, leaf = p + 1; | |
3052 | else if (*p == ':' && *(p + 1) == ':') | |
3053 | sep = p, leaf = p + 2; | |
3054 | } | |
3055 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { | |
9b9d0b15 NC |
3056 | /* the method name is unqualified or starts with SUPER:: */ |
3057 | bool need_strlen = 1; | |
3058 | if (sep) { | |
3059 | packname = CopSTASHPV(PL_curcop); | |
3060 | } | |
3061 | else if (stash) { | |
46c461b5 | 3062 | HEK * const packhek = HvNAME_HEK(stash); |
9b9d0b15 NC |
3063 | if (packhek) { |
3064 | packname = HEK_KEY(packhek); | |
3065 | packlen = HEK_LEN(packhek); | |
3066 | need_strlen = 0; | |
3067 | } else { | |
3068 | goto croak; | |
3069 | } | |
3070 | } | |
3071 | ||
3072 | if (!packname) { | |
3073 | croak: | |
e27ad1f2 AV |
3074 | Perl_croak(aTHX_ |
3075 | "Can't use anonymous symbol table for method lookup"); | |
9b9d0b15 NC |
3076 | } |
3077 | else if (need_strlen) | |
e27ad1f2 | 3078 | packlen = strlen(packname); |
9b9d0b15 | 3079 | |
56304f61 CS |
3080 | } |
3081 | else { | |
af09ea45 | 3082 | /* the method name is qualified */ |
56304f61 CS |
3083 | packname = name; |
3084 | packlen = sep - name; | |
3085 | } | |
af09ea45 IK |
3086 | |
3087 | /* we're relying on gv_fetchmethod not autovivifying the stash */ | |
da51bb9b | 3088 | if (gv_stashpvn(packname, packlen, 0)) { |
c1899e02 | 3089 | Perl_croak(aTHX_ |
af09ea45 IK |
3090 | "Can't locate object method \"%s\" via package \"%.*s\"", |
3091 | leaf, (int)packlen, packname); | |
c1899e02 GS |
3092 | } |
3093 | else { | |
3094 | Perl_croak(aTHX_ | |
af09ea45 IK |
3095 | "Can't locate object method \"%s\" via package \"%.*s\"" |
3096 | " (perhaps you forgot to load \"%.*s\"?)", | |
3097 | leaf, (int)packlen, packname, (int)packlen, packname); | |
c1899e02 | 3098 | } |
56304f61 | 3099 | } |
f5d5a27c | 3100 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e | 3101 | } |
241d1a3b NC |
3102 | |
3103 | /* | |
3104 | * Local variables: | |
3105 | * c-indentation-style: bsd | |
3106 | * c-basic-offset: 4 | |
3107 | * indent-tabs-mode: t | |
3108 | * End: | |
3109 | * | |
37442d52 RGS |
3110 | * ex: set ts=8 sts=4 sw=4 noet: |
3111 | */ |