Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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 | * | |
4ac71550 TC |
15 | * Awake! Awake! Fear, Fire, Foes! Awake! |
16 | * Fire, Foes! Awake! | |
17 | * | |
18 | * [p.1007 of _The Lord of the Rings_, VI/viii: "The Scouring of the Shire"] | |
a0d0e21e LW |
19 | */ |
20 | ||
166f8a29 DM |
21 | /* This file contains 'hot' pp ("push/pop") functions that |
22 | * execute the opcodes that make up a perl program. A typical pp function | |
23 | * expects to find its arguments on the stack, and usually pushes its | |
24 | * results onto the stack, hence the 'pp' terminology. Each OP structure | |
25 | * contains a pointer to the relevant pp_foo() function. | |
26 | * | |
27 | * By 'hot', we mean common ops whose execution speed is critical. | |
28 | * By gathering them together into a single file, we encourage | |
29 | * CPU cache hits on hot code. Also it could be taken as a warning not to | |
30 | * change any code in this file unless you're sure it won't affect | |
31 | * performance. | |
32 | */ | |
33 | ||
a0d0e21e | 34 | #include "EXTERN.h" |
864dbfa3 | 35 | #define PERL_IN_PP_HOT_C |
a0d0e21e LW |
36 | #include "perl.h" |
37 | ||
38 | /* Hot code. */ | |
39 | ||
40 | PP(pp_const) | |
41 | { | |
97aff369 | 42 | dVAR; |
39644a26 | 43 | dSP; |
996c9baa | 44 | XPUSHs(cSVOP_sv); |
a0d0e21e LW |
45 | RETURN; |
46 | } | |
47 | ||
48 | PP(pp_nextstate) | |
49 | { | |
97aff369 | 50 | dVAR; |
533c011a | 51 | PL_curcop = (COP*)PL_op; |
a0d0e21e | 52 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 53 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 54 | FREETMPS; |
f410a211 | 55 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
56 | return NORMAL; |
57 | } | |
58 | ||
59 | PP(pp_gvsv) | |
60 | { | |
97aff369 | 61 | dVAR; |
39644a26 | 62 | dSP; |
924508f0 | 63 | EXTEND(SP,1); |
533c011a | 64 | if (PL_op->op_private & OPpLVAL_INTRO) |
1d7c1841 | 65 | PUSHs(save_scalar(cGVOP_gv)); |
a0d0e21e | 66 | else |
c69033f2 | 67 | PUSHs(GvSVn(cGVOP_gv)); |
a0d0e21e LW |
68 | RETURN; |
69 | } | |
70 | ||
71 | PP(pp_null) | |
72 | { | |
97aff369 | 73 | dVAR; |
a0d0e21e LW |
74 | return NORMAL; |
75 | } | |
76 | ||
bf0571fd | 77 | /* This is sometimes called directly by pp_coreargs. */ |
a0d0e21e LW |
78 | PP(pp_pushmark) |
79 | { | |
97aff369 | 80 | dVAR; |
3280af22 | 81 | PUSHMARK(PL_stack_sp); |
a0d0e21e LW |
82 | return NORMAL; |
83 | } | |
84 | ||
85 | PP(pp_stringify) | |
86 | { | |
97aff369 | 87 | dVAR; dSP; dTARGET; |
6050d10e | 88 | sv_copypv(TARG,TOPs); |
a0d0e21e LW |
89 | SETTARG; |
90 | RETURN; | |
91 | } | |
92 | ||
93 | PP(pp_gv) | |
94 | { | |
97aff369 | 95 | dVAR; dSP; |
ad64d0ec | 96 | XPUSHs(MUTABLE_SV(cGVOP_gv)); |
a0d0e21e LW |
97 | RETURN; |
98 | } | |
99 | ||
100 | PP(pp_and) | |
101 | { | |
97aff369 | 102 | dVAR; dSP; |
f410a211 | 103 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
104 | if (!SvTRUE(TOPs)) |
105 | RETURN; | |
106 | else { | |
c960fc3b SP |
107 | if (PL_op->op_type == OP_AND) |
108 | --SP; | |
a0d0e21e LW |
109 | RETURNOP(cLOGOP->op_other); |
110 | } | |
111 | } | |
112 | ||
113 | PP(pp_sassign) | |
114 | { | |
97aff369 | 115 | dVAR; dSP; dPOPTOPssrl; |
748a9306 | 116 | |
533c011a | 117 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
0bd48802 AL |
118 | SV * const temp = left; |
119 | left = right; right = temp; | |
a0d0e21e | 120 | } |
3280af22 | 121 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e | 122 | TAINT_NOT; |
e26df76a | 123 | if (PL_op->op_private & OPpASSIGN_CV_TO_GV) { |
6136c704 | 124 | SV * const cv = SvRV(left); |
e26df76a | 125 | const U32 cv_type = SvTYPE(cv); |
13be902c | 126 | const bool is_gv = isGV_with_GP(right); |
6136c704 | 127 | const bool got_coderef = cv_type == SVt_PVCV || cv_type == SVt_PVFM; |
e26df76a NC |
128 | |
129 | if (!got_coderef) { | |
130 | assert(SvROK(cv)); | |
131 | } | |
132 | ||
ae6d515f | 133 | /* Can do the optimisation if right (LVALUE) is not a typeglob, |
e26df76a NC |
134 | left (RVALUE) is a reference to something, and we're in void |
135 | context. */ | |
13be902c | 136 | if (!got_coderef && !is_gv && GIMME_V == G_VOID) { |
e26df76a | 137 | /* Is the target symbol table currently empty? */ |
77cb3b01 | 138 | GV * const gv = gv_fetchsv_nomg(right, GV_NOINIT, SVt_PVGV); |
bb112e5a | 139 | if (SvTYPE(gv) != SVt_PVGV && !SvOK(gv)) { |
e26df76a NC |
140 | /* Good. Create a new proxy constant subroutine in the target. |
141 | The gv becomes a(nother) reference to the constant. */ | |
142 | SV *const value = SvRV(cv); | |
143 | ||
ad64d0ec | 144 | SvUPGRADE(MUTABLE_SV(gv), SVt_IV); |
1ccdb730 | 145 | SvPCS_IMPORTED_on(gv); |
e26df76a | 146 | SvRV_set(gv, value); |
b37c2d43 | 147 | SvREFCNT_inc_simple_void(value); |
e26df76a NC |
148 | SETs(right); |
149 | RETURN; | |
150 | } | |
151 | } | |
152 | ||
153 | /* Need to fix things up. */ | |
13be902c | 154 | if (!is_gv) { |
e26df76a | 155 | /* Need to fix GV. */ |
77cb3b01 | 156 | right = MUTABLE_SV(gv_fetchsv_nomg(right,GV_ADD, SVt_PVGV)); |
e26df76a NC |
157 | } |
158 | ||
159 | if (!got_coderef) { | |
160 | /* We've been returned a constant rather than a full subroutine, | |
161 | but they expect a subroutine reference to apply. */ | |
53a42478 | 162 | if (SvROK(cv)) { |
d343c3ef | 163 | ENTER_with_name("sassign_coderef"); |
53a42478 NC |
164 | SvREFCNT_inc_void(SvRV(cv)); |
165 | /* newCONSTSUB takes a reference count on the passed in SV | |
166 | from us. We set the name to NULL, otherwise we get into | |
167 | all sorts of fun as the reference to our new sub is | |
168 | donated to the GV that we're about to assign to. | |
169 | */ | |
ad64d0ec NC |
170 | SvRV_set(left, MUTABLE_SV(newCONSTSUB(GvSTASH(right), NULL, |
171 | SvRV(cv)))); | |
53a42478 | 172 | SvREFCNT_dec(cv); |
d343c3ef | 173 | LEAVE_with_name("sassign_coderef"); |
53a42478 NC |
174 | } else { |
175 | /* What can happen for the corner case *{"BONK"} = \&{"BONK"}; | |
176 | is that | |
177 | First: ops for \&{"BONK"}; return us the constant in the | |
178 | symbol table | |
179 | Second: ops for *{"BONK"} cause that symbol table entry | |
180 | (and our reference to it) to be upgraded from RV | |
181 | to typeblob) | |
182 | Thirdly: We get here. cv is actually PVGV now, and its | |
183 | GvCV() is actually the subroutine we're looking for | |
184 | ||
185 | So change the reference so that it points to the subroutine | |
186 | of that typeglob, as that's what they were after all along. | |
187 | */ | |
159b6efe | 188 | GV *const upgraded = MUTABLE_GV(cv); |
53a42478 NC |
189 | CV *const source = GvCV(upgraded); |
190 | ||
191 | assert(source); | |
192 | assert(CvFLAGS(source) & CVf_CONST); | |
193 | ||
194 | SvREFCNT_inc_void(source); | |
195 | SvREFCNT_dec(upgraded); | |
ad64d0ec | 196 | SvRV_set(left, MUTABLE_SV(source)); |
53a42478 | 197 | } |
e26df76a | 198 | } |
53a42478 | 199 | |
e26df76a | 200 | } |
8fe85e3f FC |
201 | if ( |
202 | SvTEMP(right) && !SvSMAGICAL(right) && SvREFCNT(right) == 1 && | |
203 | (!isGV_with_GP(right) || SvFAKE(right)) && ckWARN(WARN_MISC) | |
204 | ) | |
205 | Perl_warner(aTHX_ | |
206 | packWARN(WARN_MISC), "Useless assignment to a temporary" | |
207 | ); | |
54310121 | 208 | SvSetMagicSV(right, left); |
a0d0e21e LW |
209 | SETs(right); |
210 | RETURN; | |
211 | } | |
212 | ||
213 | PP(pp_cond_expr) | |
214 | { | |
97aff369 | 215 | dVAR; dSP; |
f410a211 | 216 | PERL_ASYNC_CHECK(); |
a0d0e21e | 217 | if (SvTRUEx(POPs)) |
1a67a97c | 218 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 219 | else |
1a67a97c | 220 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
221 | } |
222 | ||
223 | PP(pp_unstack) | |
224 | { | |
97aff369 | 225 | dVAR; |
8f3964af | 226 | PERL_ASYNC_CHECK(); |
a0d0e21e | 227 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 228 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 229 | FREETMPS; |
eae48c89 Z |
230 | if (!(PL_op->op_flags & OPf_SPECIAL)) { |
231 | I32 oldsave = PL_scopestack[PL_scopestack_ix - 1]; | |
232 | LEAVE_SCOPE(oldsave); | |
233 | } | |
a0d0e21e LW |
234 | return NORMAL; |
235 | } | |
236 | ||
a0d0e21e LW |
237 | PP(pp_concat) |
238 | { | |
6f1401dc | 239 | dVAR; dSP; dATARGET; tryAMAGICbin_MG(concat_amg, AMGf_assign); |
748a9306 LW |
240 | { |
241 | dPOPTOPssrl; | |
8d6d96c1 HS |
242 | bool lbyte; |
243 | STRLEN rlen; | |
d4c19fe8 | 244 | const char *rpv = NULL; |
a6b599c7 | 245 | bool rbyte = FALSE; |
a9c4fd4e | 246 | bool rcopied = FALSE; |
8d6d96c1 | 247 | |
6f1401dc DM |
248 | if (TARG == right && right != left) { /* $r = $l.$r */ |
249 | rpv = SvPV_nomg_const(right, rlen); | |
c75ab21a | 250 | rbyte = !DO_UTF8(right); |
59cd0e26 | 251 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
349d4f2f | 252 | rpv = SvPV_const(right, rlen); /* no point setting UTF-8 here */ |
db79b45b | 253 | rcopied = TRUE; |
8d6d96c1 | 254 | } |
7889fe52 | 255 | |
89734059 | 256 | if (TARG != left) { /* not $l .= $r */ |
a9c4fd4e | 257 | STRLEN llen; |
6f1401dc | 258 | const char* const lpv = SvPV_nomg_const(left, llen); |
90f5826e | 259 | lbyte = !DO_UTF8(left); |
8d6d96c1 HS |
260 | sv_setpvn(TARG, lpv, llen); |
261 | if (!lbyte) | |
262 | SvUTF8_on(TARG); | |
263 | else | |
264 | SvUTF8_off(TARG); | |
265 | } | |
89734059 | 266 | else { /* $l .= $r */ |
c75ab21a | 267 | if (!SvOK(TARG)) { |
89734059 | 268 | if (left == right && ckWARN(WARN_UNINITIALIZED)) /* $l .= $l */ |
c75ab21a | 269 | report_uninit(right); |
76f68e9b | 270 | sv_setpvs(left, ""); |
c75ab21a | 271 | } |
c5aa2872 DM |
272 | lbyte = (SvROK(left) && SvTYPE(SvRV(left)) == SVt_REGEXP) |
273 | ? !DO_UTF8(SvRV(left)) : !DO_UTF8(left); | |
90f5826e TS |
274 | if (IN_BYTES) |
275 | SvUTF8_off(TARG); | |
8d6d96c1 | 276 | } |
a12c0f56 | 277 | |
c75ab21a | 278 | if (!rcopied) { |
6f1401dc | 279 | if (left == right) |
89734059 | 280 | /* $r.$r: do magic twice: tied might return different 2nd time */ |
6f1401dc DM |
281 | SvGETMAGIC(right); |
282 | rpv = SvPV_nomg_const(right, rlen); | |
c75ab21a RH |
283 | rbyte = !DO_UTF8(right); |
284 | } | |
8d6d96c1 | 285 | if (lbyte != rbyte) { |
e3393f51 NT |
286 | /* sv_utf8_upgrade_nomg() may reallocate the stack */ |
287 | PUTBACK; | |
8d6d96c1 HS |
288 | if (lbyte) |
289 | sv_utf8_upgrade_nomg(TARG); | |
290 | else { | |
db79b45b | 291 | if (!rcopied) |
59cd0e26 | 292 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
8d6d96c1 | 293 | sv_utf8_upgrade_nomg(right); |
6f1401dc | 294 | rpv = SvPV_nomg_const(right, rlen); |
69b47968 | 295 | } |
e3393f51 | 296 | SPAGAIN; |
a0d0e21e | 297 | } |
8d6d96c1 | 298 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 299 | |
a0d0e21e LW |
300 | SETTARG; |
301 | RETURN; | |
748a9306 | 302 | } |
a0d0e21e LW |
303 | } |
304 | ||
305 | PP(pp_padsv) | |
306 | { | |
97aff369 | 307 | dVAR; dSP; dTARGET; |
a0d0e21e | 308 | XPUSHs(TARG); |
533c011a NIS |
309 | if (PL_op->op_flags & OPf_MOD) { |
310 | if (PL_op->op_private & OPpLVAL_INTRO) | |
952306ac RGS |
311 | if (!(PL_op->op_private & OPpPAD_STATE)) |
312 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); | |
a62b51b8 | 313 | if (PL_op->op_private & OPpDEREF) { |
8ec5e241 | 314 | PUTBACK; |
9026059d | 315 | TOPs = vivify_ref(TOPs, PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
316 | SPAGAIN; |
317 | } | |
4633a7c4 | 318 | } |
a0d0e21e LW |
319 | RETURN; |
320 | } | |
321 | ||
322 | PP(pp_readline) | |
323 | { | |
97aff369 | 324 | dVAR; |
30901a8a FC |
325 | dSP; |
326 | if (TOPs) { | |
327 | SvGETMAGIC(TOPs); | |
328 | tryAMAGICunTARGET(iter_amg, 0, 0); | |
329 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); | |
330 | } | |
331 | else PL_last_in_gv = PL_argvgv, PL_stack_sp--; | |
6e592b3a BM |
332 | if (!isGV_with_GP(PL_last_in_gv)) { |
333 | if (SvROK(PL_last_in_gv) && isGV_with_GP(SvRV(PL_last_in_gv))) | |
159b6efe | 334 | PL_last_in_gv = MUTABLE_GV(SvRV(PL_last_in_gv)); |
8efb3254 | 335 | else { |
f5284f61 | 336 | dSP; |
ad64d0ec | 337 | XPUSHs(MUTABLE_SV(PL_last_in_gv)); |
f5284f61 | 338 | PUTBACK; |
897d3989 | 339 | Perl_pp_rv2gv(aTHX); |
159b6efe | 340 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
f5284f61 IZ |
341 | } |
342 | } | |
a0d0e21e LW |
343 | return do_readline(); |
344 | } | |
345 | ||
346 | PP(pp_eq) | |
347 | { | |
6f1401dc | 348 | dVAR; dSP; |
33efebe6 DM |
349 | SV *left, *right; |
350 | ||
a42d0242 | 351 | tryAMAGICbin_MG(eq_amg, AMGf_set|AMGf_numeric); |
33efebe6 DM |
352 | right = POPs; |
353 | left = TOPs; | |
354 | SETs(boolSV( | |
355 | (SvIOK_notUV(left) && SvIOK_notUV(right)) | |
356 | ? (SvIVX(left) == SvIVX(right)) | |
357 | : ( do_ncmp(left, right) == 0) | |
358 | )); | |
359 | RETURN; | |
a0d0e21e LW |
360 | } |
361 | ||
362 | PP(pp_preinc) | |
363 | { | |
97aff369 | 364 | dVAR; dSP; |
17058fe0 FC |
365 | const bool inc = |
366 | PL_op->op_type == OP_PREINC || PL_op->op_type == OP_I_PREINC; | |
60092ce4 | 367 | if (SvTYPE(TOPs) >= SVt_PVAV || (isGV_with_GP(TOPs) && !SvFAKE(TOPs))) |
6ad8f254 | 368 | Perl_croak_no_modify(aTHX); |
3510b4a1 | 369 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
17058fe0 | 370 | && SvIVX(TOPs) != (inc ? IV_MAX : IV_MIN)) |
55497cff | 371 | { |
17058fe0 | 372 | SvIV_set(TOPs, SvIVX(TOPs) + (inc ? 1 : -1)); |
55497cff | 373 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 374 | } |
28e5dec8 | 375 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
17058fe0 FC |
376 | if (inc) sv_inc(TOPs); |
377 | else sv_dec(TOPs); | |
a0d0e21e LW |
378 | SvSETMAGIC(TOPs); |
379 | return NORMAL; | |
380 | } | |
381 | ||
382 | PP(pp_or) | |
383 | { | |
97aff369 | 384 | dVAR; dSP; |
f410a211 | 385 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
386 | if (SvTRUE(TOPs)) |
387 | RETURN; | |
388 | else { | |
c960fc3b SP |
389 | if (PL_op->op_type == OP_OR) |
390 | --SP; | |
a0d0e21e LW |
391 | RETURNOP(cLOGOP->op_other); |
392 | } | |
393 | } | |
394 | ||
25a55bd7 | 395 | PP(pp_defined) |
c963b151 | 396 | { |
97aff369 | 397 | dVAR; dSP; |
6136c704 AL |
398 | register SV* sv; |
399 | bool defined; | |
25a55bd7 | 400 | const int op_type = PL_op->op_type; |
ea5195b7 | 401 | const bool is_dor = (op_type == OP_DOR || op_type == OP_DORASSIGN); |
c963b151 | 402 | |
6136c704 | 403 | if (is_dor) { |
f410a211 | 404 | PERL_ASYNC_CHECK(); |
25a55bd7 SP |
405 | sv = TOPs; |
406 | if (!sv || !SvANY(sv)) { | |
2bd49cfc NC |
407 | if (op_type == OP_DOR) |
408 | --SP; | |
25a55bd7 SP |
409 | RETURNOP(cLOGOP->op_other); |
410 | } | |
b7c44293 RGS |
411 | } |
412 | else { | |
413 | /* OP_DEFINED */ | |
25a55bd7 SP |
414 | sv = POPs; |
415 | if (!sv || !SvANY(sv)) | |
416 | RETPUSHNO; | |
b7c44293 | 417 | } |
25a55bd7 | 418 | |
6136c704 | 419 | defined = FALSE; |
c963b151 BD |
420 | switch (SvTYPE(sv)) { |
421 | case SVt_PVAV: | |
422 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 423 | defined = TRUE; |
c963b151 BD |
424 | break; |
425 | case SVt_PVHV: | |
426 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 427 | defined = TRUE; |
c963b151 BD |
428 | break; |
429 | case SVt_PVCV: | |
430 | if (CvROOT(sv) || CvXSUB(sv)) | |
25a55bd7 | 431 | defined = TRUE; |
c963b151 BD |
432 | break; |
433 | default: | |
5b295bef | 434 | SvGETMAGIC(sv); |
c963b151 | 435 | if (SvOK(sv)) |
25a55bd7 | 436 | defined = TRUE; |
6136c704 | 437 | break; |
c963b151 | 438 | } |
6136c704 AL |
439 | |
440 | if (is_dor) { | |
c960fc3b SP |
441 | if(defined) |
442 | RETURN; | |
443 | if(op_type == OP_DOR) | |
444 | --SP; | |
25a55bd7 | 445 | RETURNOP(cLOGOP->op_other); |
25a55bd7 | 446 | } |
d9aa96a4 SP |
447 | /* assuming OP_DEFINED */ |
448 | if(defined) | |
449 | RETPUSHYES; | |
450 | RETPUSHNO; | |
c963b151 BD |
451 | } |
452 | ||
a0d0e21e LW |
453 | PP(pp_add) |
454 | { | |
800401ee | 455 | dVAR; dSP; dATARGET; bool useleft; SV *svl, *svr; |
6f1401dc DM |
456 | tryAMAGICbin_MG(add_amg, AMGf_assign|AMGf_numeric); |
457 | svr = TOPs; | |
458 | svl = TOPm1s; | |
459 | ||
800401ee | 460 | useleft = USE_LEFT(svl); |
28e5dec8 JH |
461 | #ifdef PERL_PRESERVE_IVUV |
462 | /* We must see if we can perform the addition with integers if possible, | |
463 | as the integer code detects overflow while the NV code doesn't. | |
464 | If either argument hasn't had a numeric conversion yet attempt to get | |
465 | the IV. It's important to do this now, rather than just assuming that | |
466 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
467 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
468 | integer in case the second argument is IV=9223372036854775806 | |
469 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
470 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
471 | ||
472 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
473 | fp maths for integer values. |
474 | ||
a00b5bd3 | 475 | How to detect overflow? |
7dca457a NC |
476 | |
477 | C 99 section 6.2.6.1 says | |
478 | ||
479 | The range of nonnegative values of a signed integer type is a subrange | |
480 | of the corresponding unsigned integer type, and the representation of | |
481 | the same value in each type is the same. A computation involving | |
482 | unsigned operands can never overflow, because a result that cannot be | |
483 | represented by the resulting unsigned integer type is reduced modulo | |
484 | the number that is one greater than the largest value that can be | |
485 | represented by the resulting type. | |
486 | ||
487 | (the 9th paragraph) | |
488 | ||
489 | which I read as "unsigned ints wrap." | |
490 | ||
491 | signed integer overflow seems to be classed as "exception condition" | |
492 | ||
493 | If an exceptional condition occurs during the evaluation of an | |
494 | expression (that is, if the result is not mathematically defined or not | |
495 | in the range of representable values for its type), the behavior is | |
496 | undefined. | |
497 | ||
498 | (6.5, the 5th paragraph) | |
499 | ||
500 | I had assumed that on 2s complement machines signed arithmetic would | |
501 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
502 | everything perl builds on would be happy. After much wailing and | |
503 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
504 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
505 | unsigned code below is actually shorter than the old code. :-) | |
506 | */ | |
507 | ||
6f1401dc DM |
508 | SvIV_please_nomg(svr); |
509 | ||
800401ee | 510 | if (SvIOK(svr)) { |
28e5dec8 JH |
511 | /* Unless the left argument is integer in range we are going to have to |
512 | use NV maths. Hence only attempt to coerce the right argument if | |
513 | we know the left is integer. */ | |
9c5ffd7c JH |
514 | register UV auv = 0; |
515 | bool auvok = FALSE; | |
7dca457a NC |
516 | bool a_valid = 0; |
517 | ||
28e5dec8 | 518 | if (!useleft) { |
7dca457a NC |
519 | auv = 0; |
520 | a_valid = auvok = 1; | |
521 | /* left operand is undef, treat as zero. + 0 is identity, | |
522 | Could SETi or SETu right now, but space optimise by not adding | |
523 | lots of code to speed up what is probably a rarish case. */ | |
524 | } else { | |
525 | /* Left operand is defined, so is it IV? */ | |
6f1401dc | 526 | SvIV_please_nomg(svl); |
800401ee JH |
527 | if (SvIOK(svl)) { |
528 | if ((auvok = SvUOK(svl))) | |
529 | auv = SvUVX(svl); | |
7dca457a | 530 | else { |
800401ee | 531 | register const IV aiv = SvIVX(svl); |
7dca457a NC |
532 | if (aiv >= 0) { |
533 | auv = aiv; | |
534 | auvok = 1; /* Now acting as a sign flag. */ | |
535 | } else { /* 2s complement assumption for IV_MIN */ | |
536 | auv = (UV)-aiv; | |
537 | } | |
538 | } | |
539 | a_valid = 1; | |
28e5dec8 JH |
540 | } |
541 | } | |
7dca457a NC |
542 | if (a_valid) { |
543 | bool result_good = 0; | |
544 | UV result; | |
545 | register UV buv; | |
800401ee | 546 | bool buvok = SvUOK(svr); |
a00b5bd3 | 547 | |
7dca457a | 548 | if (buvok) |
800401ee | 549 | buv = SvUVX(svr); |
7dca457a | 550 | else { |
800401ee | 551 | register const IV biv = SvIVX(svr); |
7dca457a NC |
552 | if (biv >= 0) { |
553 | buv = biv; | |
554 | buvok = 1; | |
555 | } else | |
556 | buv = (UV)-biv; | |
557 | } | |
558 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 559 | else "IV" now, independent of how it came in. |
7dca457a NC |
560 | if a, b represents positive, A, B negative, a maps to -A etc |
561 | a + b => (a + b) | |
562 | A + b => -(a - b) | |
563 | a + B => (a - b) | |
564 | A + B => -(a + b) | |
565 | all UV maths. negate result if A negative. | |
566 | add if signs same, subtract if signs differ. */ | |
567 | ||
568 | if (auvok ^ buvok) { | |
569 | /* Signs differ. */ | |
570 | if (auv >= buv) { | |
571 | result = auv - buv; | |
572 | /* Must get smaller */ | |
573 | if (result <= auv) | |
574 | result_good = 1; | |
575 | } else { | |
576 | result = buv - auv; | |
577 | if (result <= buv) { | |
578 | /* result really should be -(auv-buv). as its negation | |
579 | of true value, need to swap our result flag */ | |
580 | auvok = !auvok; | |
581 | result_good = 1; | |
28e5dec8 JH |
582 | } |
583 | } | |
7dca457a NC |
584 | } else { |
585 | /* Signs same */ | |
586 | result = auv + buv; | |
587 | if (result >= auv) | |
588 | result_good = 1; | |
589 | } | |
590 | if (result_good) { | |
591 | SP--; | |
592 | if (auvok) | |
28e5dec8 | 593 | SETu( result ); |
7dca457a NC |
594 | else { |
595 | /* Negate result */ | |
596 | if (result <= (UV)IV_MIN) | |
597 | SETi( -(IV)result ); | |
598 | else { | |
599 | /* result valid, but out of range for IV. */ | |
600 | SETn( -(NV)result ); | |
28e5dec8 JH |
601 | } |
602 | } | |
7dca457a NC |
603 | RETURN; |
604 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
605 | } |
606 | } | |
607 | #endif | |
a0d0e21e | 608 | { |
6f1401dc | 609 | NV value = SvNV_nomg(svr); |
4efa5a16 | 610 | (void)POPs; |
28e5dec8 JH |
611 | if (!useleft) { |
612 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
613 | SETn(value); | |
614 | RETURN; | |
615 | } | |
6f1401dc | 616 | SETn( value + SvNV_nomg(svl) ); |
28e5dec8 | 617 | RETURN; |
a0d0e21e LW |
618 | } |
619 | } | |
620 | ||
621 | PP(pp_aelemfast) | |
622 | { | |
97aff369 | 623 | dVAR; dSP; |
93bad3fd | 624 | AV * const av = PL_op->op_type == OP_AELEMFAST_LEX |
8f878375 | 625 | ? MUTABLE_AV(PAD_SV(PL_op->op_targ)) : GvAVn(cGVOP_gv); |
a3b680e6 | 626 | const U32 lval = PL_op->op_flags & OPf_MOD; |
0bd48802 | 627 | SV** const svp = av_fetch(av, PL_op->op_private, lval); |
3280af22 | 628 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 629 | EXTEND(SP, 1); |
39cf747a | 630 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 631 | mg_get(sv); |
be6c24e0 | 632 | PUSHs(sv); |
a0d0e21e LW |
633 | RETURN; |
634 | } | |
635 | ||
636 | PP(pp_join) | |
637 | { | |
97aff369 | 638 | dVAR; dSP; dMARK; dTARGET; |
a0d0e21e LW |
639 | MARK++; |
640 | do_join(TARG, *MARK, MARK, SP); | |
641 | SP = MARK; | |
642 | SETs(TARG); | |
643 | RETURN; | |
644 | } | |
645 | ||
646 | PP(pp_pushre) | |
647 | { | |
97aff369 | 648 | dVAR; dSP; |
44a8e56a | 649 | #ifdef DEBUGGING |
650 | /* | |
651 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
652 | * will be enough to hold an OP*. | |
653 | */ | |
c4420975 | 654 | SV* const sv = sv_newmortal(); |
44a8e56a | 655 | sv_upgrade(sv, SVt_PVLV); |
656 | LvTYPE(sv) = '/'; | |
533c011a | 657 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 658 | XPUSHs(sv); |
659 | #else | |
ad64d0ec | 660 | XPUSHs(MUTABLE_SV(PL_op)); |
44a8e56a | 661 | #endif |
a0d0e21e LW |
662 | RETURN; |
663 | } | |
664 | ||
665 | /* Oversized hot code. */ | |
666 | ||
667 | PP(pp_print) | |
668 | { | |
27da23d5 | 669 | dVAR; dSP; dMARK; dORIGMARK; |
760ac839 | 670 | register PerlIO *fp; |
236988e4 | 671 | MAGIC *mg; |
159b6efe NC |
672 | GV * const gv |
673 | = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv; | |
9c9f25b8 | 674 | IO *io = GvIO(gv); |
5b468f54 | 675 | |
9c9f25b8 | 676 | if (io |
ad64d0ec | 677 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
5b468f54 | 678 | { |
01bb7c6d | 679 | had_magic: |
68dc0745 | 680 | if (MARK == ORIGMARK) { |
1c846c1f | 681 | /* If using default handle then we need to make space to |
a60c0954 NIS |
682 | * pass object as 1st arg, so move other args up ... |
683 | */ | |
4352c267 | 684 | MEXTEND(SP, 1); |
68dc0745 | 685 | ++MARK; |
686 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
687 | ++SP; | |
688 | } | |
94bc412f NC |
689 | return Perl_tied_method(aTHX_ "PRINT", mark - 1, MUTABLE_SV(io), |
690 | mg, | |
691 | (G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK | |
692 | | (PL_op->op_type == OP_SAY | |
693 | ? TIED_METHOD_SAY : 0)), sp - mark); | |
236988e4 | 694 | } |
9c9f25b8 | 695 | if (!io) { |
68b590d9 | 696 | if ( gv && GvEGVx(gv) && (io = GvIO(GvEGV(gv))) |
ad64d0ec | 697 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
01bb7c6d | 698 | goto had_magic; |
51087808 | 699 | report_evil_fh(gv); |
93189314 | 700 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
701 | goto just_say_no; |
702 | } | |
703 | else if (!(fp = IoOFP(io))) { | |
7716c5c5 NC |
704 | if (IoIFP(io)) |
705 | report_wrongway_fh(gv, '<'); | |
51087808 | 706 | else |
7716c5c5 | 707 | report_evil_fh(gv); |
93189314 | 708 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e LW |
709 | goto just_say_no; |
710 | } | |
711 | else { | |
e23d9e2f | 712 | SV * const ofs = GvSV(PL_ofsgv); /* $, */ |
a0d0e21e | 713 | MARK++; |
e23d9e2f | 714 | if (ofs && (SvGMAGICAL(ofs) || SvOK(ofs))) { |
a0d0e21e LW |
715 | while (MARK <= SP) { |
716 | if (!do_print(*MARK, fp)) | |
717 | break; | |
718 | MARK++; | |
719 | if (MARK <= SP) { | |
e23d9e2f CS |
720 | /* don't use 'ofs' here - it may be invalidated by magic callbacks */ |
721 | if (!do_print(GvSV(PL_ofsgv), fp)) { | |
a0d0e21e LW |
722 | MARK--; |
723 | break; | |
724 | } | |
725 | } | |
726 | } | |
727 | } | |
728 | else { | |
729 | while (MARK <= SP) { | |
730 | if (!do_print(*MARK, fp)) | |
731 | break; | |
732 | MARK++; | |
733 | } | |
734 | } | |
735 | if (MARK <= SP) | |
736 | goto just_say_no; | |
737 | else { | |
cfc4a7da GA |
738 | if (PL_op->op_type == OP_SAY) { |
739 | if (PerlIO_write(fp, "\n", 1) == 0 || PerlIO_error(fp)) | |
740 | goto just_say_no; | |
741 | } | |
742 | else if (PL_ors_sv && SvOK(PL_ors_sv)) | |
7889fe52 | 743 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
a0d0e21e LW |
744 | goto just_say_no; |
745 | ||
746 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 747 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
748 | goto just_say_no; |
749 | } | |
750 | } | |
751 | SP = ORIGMARK; | |
e52fd6f4 | 752 | XPUSHs(&PL_sv_yes); |
a0d0e21e LW |
753 | RETURN; |
754 | ||
755 | just_say_no: | |
756 | SP = ORIGMARK; | |
e52fd6f4 | 757 | XPUSHs(&PL_sv_undef); |
a0d0e21e LW |
758 | RETURN; |
759 | } | |
760 | ||
761 | PP(pp_rv2av) | |
762 | { | |
97aff369 | 763 | dVAR; dSP; dTOPss; |
cde874ca | 764 | const I32 gimme = GIMME_V; |
17ab7946 NC |
765 | static const char an_array[] = "an ARRAY"; |
766 | static const char a_hash[] = "a HASH"; | |
767 | const bool is_pp_rv2av = PL_op->op_type == OP_RV2AV; | |
d83b45b8 | 768 | const svtype type = is_pp_rv2av ? SVt_PVAV : SVt_PVHV; |
a0d0e21e | 769 | |
9026059d | 770 | SvGETMAGIC(sv); |
a0d0e21e | 771 | if (SvROK(sv)) { |
93d7320b DM |
772 | if (SvAMAGIC(sv)) { |
773 | sv = amagic_deref_call(sv, is_pp_rv2av ? to_av_amg : to_hv_amg); | |
774 | SPAGAIN; | |
775 | } | |
17ab7946 NC |
776 | sv = SvRV(sv); |
777 | if (SvTYPE(sv) != type) | |
778 | DIE(aTHX_ "Not %s reference", is_pp_rv2av ? an_array : a_hash); | |
533c011a | 779 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 780 | SETs(sv); |
a0d0e21e LW |
781 | RETURN; |
782 | } | |
40c94d11 FC |
783 | else if (PL_op->op_private & OPpMAYBE_LVSUB) { |
784 | const I32 flags = is_lvalue_sub(); | |
785 | if (flags && !(flags & OPpENTERSUB_INARGS)) { | |
cde874ca | 786 | if (gimme != G_ARRAY) |
042560a6 | 787 | goto croak_cant_return; |
17ab7946 | 788 | SETs(sv); |
78f9721b | 789 | RETURN; |
40c94d11 | 790 | } |
78f9721b | 791 | } |
82d03984 RGS |
792 | else if (PL_op->op_flags & OPf_MOD |
793 | && PL_op->op_private & OPpLVAL_INTRO) | |
f1f66076 | 794 | Perl_croak(aTHX_ "%s", PL_no_localize_ref); |
a0d0e21e LW |
795 | } |
796 | else { | |
17ab7946 | 797 | if (SvTYPE(sv) == type) { |
533c011a | 798 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 799 | SETs(sv); |
a0d0e21e LW |
800 | RETURN; |
801 | } | |
78f9721b | 802 | else if (LVRET) { |
cde874ca | 803 | if (gimme != G_ARRAY) |
042560a6 | 804 | goto croak_cant_return; |
17ab7946 | 805 | SETs(sv); |
78f9721b SM |
806 | RETURN; |
807 | } | |
a0d0e21e LW |
808 | } |
809 | else { | |
67955e0c | 810 | GV *gv; |
1c846c1f | 811 | |
6e592b3a | 812 | if (!isGV_with_GP(sv)) { |
dc3c76f8 NC |
813 | gv = Perl_softref2xv(aTHX_ sv, is_pp_rv2av ? an_array : a_hash, |
814 | type, &sp); | |
815 | if (!gv) | |
816 | RETURN; | |
35cd451c GS |
817 | } |
818 | else { | |
159b6efe | 819 | gv = MUTABLE_GV(sv); |
a0d0e21e | 820 | } |
ad64d0ec | 821 | sv = is_pp_rv2av ? MUTABLE_SV(GvAVn(gv)) : MUTABLE_SV(GvHVn(gv)); |
533c011a | 822 | if (PL_op->op_private & OPpLVAL_INTRO) |
ad64d0ec | 823 | sv = is_pp_rv2av ? MUTABLE_SV(save_ary(gv)) : MUTABLE_SV(save_hash(gv)); |
533c011a | 824 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 825 | SETs(sv); |
a0d0e21e LW |
826 | RETURN; |
827 | } | |
40c94d11 FC |
828 | else if (PL_op->op_private & OPpMAYBE_LVSUB) { |
829 | const I32 flags = is_lvalue_sub(); | |
830 | if (flags && !(flags & OPpENTERSUB_INARGS)) { | |
cde874ca | 831 | if (gimme != G_ARRAY) |
042560a6 | 832 | goto croak_cant_return; |
17ab7946 | 833 | SETs(sv); |
78f9721b | 834 | RETURN; |
40c94d11 | 835 | } |
78f9721b | 836 | } |
a0d0e21e LW |
837 | } |
838 | } | |
839 | ||
17ab7946 | 840 | if (is_pp_rv2av) { |
502c6561 | 841 | AV *const av = MUTABLE_AV(sv); |
486ec47a | 842 | /* The guts of pp_rv2av, with no intending change to preserve history |
17ab7946 NC |
843 | (until such time as we get tools that can do blame annotation across |
844 | whitespace changes. */ | |
96913b52 VP |
845 | if (gimme == G_ARRAY) { |
846 | const I32 maxarg = AvFILL(av) + 1; | |
847 | (void)POPs; /* XXXX May be optimized away? */ | |
848 | EXTEND(SP, maxarg); | |
849 | if (SvRMAGICAL(av)) { | |
850 | U32 i; | |
851 | for (i=0; i < (U32)maxarg; i++) { | |
852 | SV ** const svp = av_fetch(av, i, FALSE); | |
853 | /* See note in pp_helem, and bug id #27839 */ | |
854 | SP[i+1] = svp | |
855 | ? SvGMAGICAL(*svp) ? (mg_get(*svp), *svp) : *svp | |
856 | : &PL_sv_undef; | |
857 | } | |
858 | } | |
859 | else { | |
860 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
93965878 | 861 | } |
96913b52 | 862 | SP += maxarg; |
1c846c1f | 863 | } |
96913b52 VP |
864 | else if (gimme == G_SCALAR) { |
865 | dTARGET; | |
866 | const I32 maxarg = AvFILL(av) + 1; | |
867 | SETi(maxarg); | |
93965878 | 868 | } |
17ab7946 NC |
869 | } else { |
870 | /* The guts of pp_rv2hv */ | |
96913b52 VP |
871 | if (gimme == G_ARRAY) { /* array wanted */ |
872 | *PL_stack_sp = sv; | |
981b7185 | 873 | return Perl_do_kv(aTHX); |
96913b52 VP |
874 | } |
875 | else if (gimme == G_SCALAR) { | |
876 | dTARGET; | |
877 | TARG = Perl_hv_scalar(aTHX_ MUTABLE_HV(sv)); | |
878 | SPAGAIN; | |
879 | SETTARG; | |
880 | } | |
17ab7946 | 881 | } |
be85d344 | 882 | RETURN; |
042560a6 NC |
883 | |
884 | croak_cant_return: | |
885 | Perl_croak(aTHX_ "Can't return %s to lvalue scalar context", | |
886 | is_pp_rv2av ? "array" : "hash"); | |
77e217c6 | 887 | RETURN; |
a0d0e21e LW |
888 | } |
889 | ||
10c8fecd GS |
890 | STATIC void |
891 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
892 | { | |
97aff369 | 893 | dVAR; |
7918f24d NC |
894 | |
895 | PERL_ARGS_ASSERT_DO_ODDBALL; | |
896 | ||
10c8fecd GS |
897 | if (*relem) { |
898 | SV *tmpstr; | |
b464bac0 | 899 | const HE *didstore; |
6d822dc4 MS |
900 | |
901 | if (ckWARN(WARN_MISC)) { | |
a3b680e6 | 902 | const char *err; |
10c8fecd GS |
903 | if (relem == firstrelem && |
904 | SvROK(*relem) && | |
905 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
906 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
907 | { | |
a3b680e6 | 908 | err = "Reference found where even-sized list expected"; |
10c8fecd GS |
909 | } |
910 | else | |
a3b680e6 | 911 | err = "Odd number of elements in hash assignment"; |
f1f66076 | 912 | Perl_warner(aTHX_ packWARN(WARN_MISC), "%s", err); |
10c8fecd | 913 | } |
6d822dc4 | 914 | |
561b68a9 | 915 | tmpstr = newSV(0); |
6d822dc4 MS |
916 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
917 | if (SvMAGICAL(hash)) { | |
918 | if (SvSMAGICAL(tmpstr)) | |
919 | mg_set(tmpstr); | |
920 | if (!didstore) | |
921 | sv_2mortal(tmpstr); | |
922 | } | |
923 | TAINT_NOT; | |
10c8fecd GS |
924 | } |
925 | } | |
926 | ||
a0d0e21e LW |
927 | PP(pp_aassign) |
928 | { | |
27da23d5 | 929 | dVAR; dSP; |
3280af22 NIS |
930 | SV **lastlelem = PL_stack_sp; |
931 | SV **lastrelem = PL_stack_base + POPMARK; | |
932 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
933 | SV **firstlelem = lastrelem + 1; |
934 | ||
935 | register SV **relem; | |
936 | register SV **lelem; | |
937 | ||
938 | register SV *sv; | |
939 | register AV *ary; | |
940 | ||
54310121 | 941 | I32 gimme; |
a0d0e21e LW |
942 | HV *hash; |
943 | I32 i; | |
944 | int magic; | |
ca65944e | 945 | int duplicates = 0; |
cbbf8932 | 946 | SV **firsthashrelem = NULL; /* "= 0" keeps gcc 2.95 quiet */ |
5637b936 | 947 | |
3280af22 | 948 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
ca65944e | 949 | gimme = GIMME_V; |
a0d0e21e LW |
950 | |
951 | /* If there's a common identifier on both sides we have to take | |
952 | * special care that assigning the identifier on the left doesn't | |
953 | * clobber a value on the right that's used later in the list. | |
acdea6f0 | 954 | * Don't bother if LHS is just an empty hash or array. |
a0d0e21e | 955 | */ |
acdea6f0 DM |
956 | |
957 | if ( (PL_op->op_private & OPpASSIGN_COMMON) | |
958 | && ( | |
959 | firstlelem != lastlelem | |
960 | || ! ((sv = *firstlelem)) | |
961 | || SvMAGICAL(sv) | |
962 | || ! (SvTYPE(sv) == SVt_PVAV || SvTYPE(sv) == SVt_PVHV) | |
963 | || (SvTYPE(sv) == SVt_PVAV && AvFILL((AV*)sv) != -1) | |
1b95d04f | 964 | || (SvTYPE(sv) == SVt_PVHV && HvUSEDKEYS((HV*)sv) != 0) |
acdea6f0 DM |
965 | ) |
966 | ) { | |
cc5e57d2 | 967 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd | 968 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
155aba94 | 969 | if ((sv = *relem)) { |
a1f49e72 | 970 | TAINT_NOT; /* Each item is independent */ |
61e5f455 NC |
971 | |
972 | /* Dear TODO test in t/op/sort.t, I love you. | |
973 | (It's relying on a panic, not a "semi-panic" from newSVsv() | |
974 | and then an assertion failure below.) */ | |
975 | if (SvIS_FREED(sv)) { | |
976 | Perl_croak(aTHX_ "panic: attempt to copy freed scalar %p", | |
977 | (void*)sv); | |
978 | } | |
979 | /* Specifically *not* sv_mortalcopy(), as that will steal TEMPs, | |
980 | and we need a second copy of a temp here. */ | |
981 | *relem = sv_2mortal(newSVsv(sv)); | |
a1f49e72 | 982 | } |
10c8fecd | 983 | } |
a0d0e21e LW |
984 | } |
985 | ||
986 | relem = firstrelem; | |
987 | lelem = firstlelem; | |
4608196e RGS |
988 | ary = NULL; |
989 | hash = NULL; | |
10c8fecd | 990 | |
a0d0e21e | 991 | while (lelem <= lastlelem) { |
bbce6d69 | 992 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
993 | sv = *lelem++; |
994 | switch (SvTYPE(sv)) { | |
995 | case SVt_PVAV: | |
502c6561 | 996 | ary = MUTABLE_AV(sv); |
748a9306 | 997 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e | 998 | av_clear(ary); |
7e42bd57 | 999 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1000 | i = 0; |
1001 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1002 | SV **didstore; |
a0d0e21e | 1003 | assert(*relem); |
4f0556e9 NC |
1004 | sv = newSV(0); |
1005 | sv_setsv(sv, *relem); | |
a0d0e21e | 1006 | *(relem++) = sv; |
5117ca91 GS |
1007 | didstore = av_store(ary,i++,sv); |
1008 | if (magic) { | |
8ef24240 | 1009 | if (SvSMAGICAL(sv)) |
fb73857a | 1010 | mg_set(sv); |
5117ca91 | 1011 | if (!didstore) |
8127e0e3 | 1012 | sv_2mortal(sv); |
5117ca91 | 1013 | } |
bbce6d69 | 1014 | TAINT_NOT; |
a0d0e21e | 1015 | } |
354b0578 | 1016 | if (PL_delaymagic & DM_ARRAY_ISA) |
ad64d0ec | 1017 | SvSETMAGIC(MUTABLE_SV(ary)); |
a0d0e21e | 1018 | break; |
10c8fecd | 1019 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e | 1020 | SV *tmpstr; |
45960564 | 1021 | SV** topelem = relem; |
a0d0e21e | 1022 | |
85fbaab2 | 1023 | hash = MUTABLE_HV(sv); |
748a9306 | 1024 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e | 1025 | hv_clear(hash); |
ca65944e | 1026 | firsthashrelem = relem; |
a0d0e21e LW |
1027 | |
1028 | while (relem < lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1029 | HE *didstore; |
6136c704 AL |
1030 | sv = *relem ? *relem : &PL_sv_no; |
1031 | relem++; | |
561b68a9 | 1032 | tmpstr = newSV(0); |
a0d0e21e LW |
1033 | if (*relem) |
1034 | sv_setsv(tmpstr,*relem); /* value */ | |
45960564 DM |
1035 | relem++; |
1036 | if (gimme != G_VOID) { | |
1037 | if (hv_exists_ent(hash, sv, 0)) | |
1038 | /* key overwrites an existing entry */ | |
1039 | duplicates += 2; | |
1040 | else | |
1041 | if (gimme == G_ARRAY) { | |
1042 | /* copy element back: possibly to an earlier | |
1043 | * stack location if we encountered dups earlier */ | |
1044 | *topelem++ = sv; | |
1045 | *topelem++ = tmpstr; | |
1046 | } | |
1047 | } | |
5117ca91 GS |
1048 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1049 | if (magic) { | |
8ef24240 | 1050 | if (SvSMAGICAL(tmpstr)) |
fb73857a | 1051 | mg_set(tmpstr); |
5117ca91 | 1052 | if (!didstore) |
8127e0e3 | 1053 | sv_2mortal(tmpstr); |
5117ca91 | 1054 | } |
bbce6d69 | 1055 | TAINT_NOT; |
8e07c86e | 1056 | } |
6a0deba8 | 1057 | if (relem == lastrelem) { |
10c8fecd | 1058 | do_oddball(hash, relem, firstrelem); |
6a0deba8 | 1059 | relem++; |
1930e939 | 1060 | } |
a0d0e21e LW |
1061 | } |
1062 | break; | |
1063 | default: | |
6fc92669 GS |
1064 | if (SvIMMORTAL(sv)) { |
1065 | if (relem <= lastrelem) | |
1066 | relem++; | |
1067 | break; | |
a0d0e21e LW |
1068 | } |
1069 | if (relem <= lastrelem) { | |
1c70fb82 FC |
1070 | if ( |
1071 | SvTEMP(sv) && !SvSMAGICAL(sv) && SvREFCNT(sv) == 1 && | |
1072 | (!isGV_with_GP(sv) || SvFAKE(sv)) && ckWARN(WARN_MISC) | |
1073 | ) | |
1074 | Perl_warner(aTHX_ | |
1075 | packWARN(WARN_MISC), | |
1076 | "Useless assignment to a temporary" | |
1077 | ); | |
a0d0e21e LW |
1078 | sv_setsv(sv, *relem); |
1079 | *(relem++) = sv; | |
1080 | } | |
1081 | else | |
3280af22 | 1082 | sv_setsv(sv, &PL_sv_undef); |
8ef24240 | 1083 | SvSETMAGIC(sv); |
a0d0e21e LW |
1084 | break; |
1085 | } | |
1086 | } | |
3280af22 NIS |
1087 | if (PL_delaymagic & ~DM_DELAY) { |
1088 | if (PL_delaymagic & DM_UID) { | |
a0d0e21e | 1089 | #ifdef HAS_SETRESUID |
fb934a90 RD |
1090 | (void)setresuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1091 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1, | |
1092 | (Uid_t)-1); | |
56febc5e AD |
1093 | #else |
1094 | # ifdef HAS_SETREUID | |
fb934a90 RD |
1095 | (void)setreuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1096 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1); | |
56febc5e AD |
1097 | # else |
1098 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
1099 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1100 | (void)setruid(PL_uid); | |
1101 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 1102 | } |
56febc5e AD |
1103 | # endif /* HAS_SETRUID */ |
1104 | # ifdef HAS_SETEUID | |
b28d0864 | 1105 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
fb934a90 | 1106 | (void)seteuid(PL_euid); |
b28d0864 | 1107 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e | 1108 | } |
56febc5e | 1109 | # endif /* HAS_SETEUID */ |
b28d0864 NIS |
1110 | if (PL_delaymagic & DM_UID) { |
1111 | if (PL_uid != PL_euid) | |
cea2e8a9 | 1112 | DIE(aTHX_ "No setreuid available"); |
b28d0864 | 1113 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e | 1114 | } |
56febc5e AD |
1115 | # endif /* HAS_SETREUID */ |
1116 | #endif /* HAS_SETRESUID */ | |
d8eceb89 JH |
1117 | PL_uid = PerlProc_getuid(); |
1118 | PL_euid = PerlProc_geteuid(); | |
a0d0e21e | 1119 | } |
3280af22 | 1120 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1121 | #ifdef HAS_SETRESGID |
fb934a90 RD |
1122 | (void)setresgid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1123 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1, | |
1124 | (Gid_t)-1); | |
56febc5e AD |
1125 | #else |
1126 | # ifdef HAS_SETREGID | |
fb934a90 RD |
1127 | (void)setregid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1128 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1); | |
56febc5e AD |
1129 | # else |
1130 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
1131 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1132 | (void)setrgid(PL_gid); | |
1133 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 1134 | } |
56febc5e AD |
1135 | # endif /* HAS_SETRGID */ |
1136 | # ifdef HAS_SETEGID | |
b28d0864 | 1137 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
fb934a90 | 1138 | (void)setegid(PL_egid); |
b28d0864 | 1139 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e | 1140 | } |
56febc5e | 1141 | # endif /* HAS_SETEGID */ |
b28d0864 NIS |
1142 | if (PL_delaymagic & DM_GID) { |
1143 | if (PL_gid != PL_egid) | |
cea2e8a9 | 1144 | DIE(aTHX_ "No setregid available"); |
b28d0864 | 1145 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e | 1146 | } |
56febc5e AD |
1147 | # endif /* HAS_SETREGID */ |
1148 | #endif /* HAS_SETRESGID */ | |
d8eceb89 JH |
1149 | PL_gid = PerlProc_getgid(); |
1150 | PL_egid = PerlProc_getegid(); | |
a0d0e21e | 1151 | } |
3280af22 | 1152 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e | 1153 | } |
3280af22 | 1154 | PL_delaymagic = 0; |
54310121 | 1155 | |
54310121 | 1156 | if (gimme == G_VOID) |
1157 | SP = firstrelem - 1; | |
1158 | else if (gimme == G_SCALAR) { | |
1159 | dTARGET; | |
1160 | SP = firstrelem; | |
ca65944e | 1161 | SETi(lastrelem - firstrelem + 1 - duplicates); |
54310121 | 1162 | } |
1163 | else { | |
ca65944e | 1164 | if (ary) |
a0d0e21e | 1165 | SP = lastrelem; |
ca65944e RGS |
1166 | else if (hash) { |
1167 | if (duplicates) { | |
45960564 DM |
1168 | /* at this point we have removed the duplicate key/value |
1169 | * pairs from the stack, but the remaining values may be | |
1170 | * wrong; i.e. with (a 1 a 2 b 3) on the stack we've removed | |
1171 | * the (a 2), but the stack now probably contains | |
1172 | * (a <freed> b 3), because { hv_save(a,1); hv_save(a,2) } | |
1173 | * obliterates the earlier key. So refresh all values. */ | |
ca65944e | 1174 | lastrelem -= duplicates; |
45960564 DM |
1175 | relem = firsthashrelem; |
1176 | while (relem < lastrelem) { | |
1177 | HE *he; | |
1178 | sv = *relem++; | |
1179 | he = hv_fetch_ent(hash, sv, 0, 0); | |
1180 | *relem++ = (he ? HeVAL(he) : &PL_sv_undef); | |
1181 | } | |
ca65944e RGS |
1182 | } |
1183 | SP = lastrelem; | |
1184 | } | |
a0d0e21e LW |
1185 | else |
1186 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 1187 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 1188 | while (relem <= SP) |
3280af22 | 1189 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 1190 | } |
08aeb9f7 | 1191 | |
54310121 | 1192 | RETURN; |
a0d0e21e LW |
1193 | } |
1194 | ||
8782bef2 GB |
1195 | PP(pp_qr) |
1196 | { | |
97aff369 | 1197 | dVAR; dSP; |
c4420975 | 1198 | register PMOP * const pm = cPMOP; |
fe578d7f | 1199 | REGEXP * rx = PM_GETRE(pm); |
10599a69 | 1200 | SV * const pkg = rx ? CALLREG_PACKAGE(rx) : NULL; |
c4420975 | 1201 | SV * const rv = sv_newmortal(); |
288b8c02 NC |
1202 | |
1203 | SvUPGRADE(rv, SVt_IV); | |
c2123ae3 NC |
1204 | /* For a subroutine describing itself as "This is a hacky workaround" I'm |
1205 | loathe to use it here, but it seems to be the right fix. Or close. | |
1206 | The key part appears to be that it's essential for pp_qr to return a new | |
1207 | object (SV), which implies that there needs to be an effective way to | |
1208 | generate a new SV from the existing SV that is pre-compiled in the | |
1209 | optree. */ | |
1210 | SvRV_set(rv, MUTABLE_SV(reg_temp_copy(NULL, rx))); | |
288b8c02 NC |
1211 | SvROK_on(rv); |
1212 | ||
1213 | if (pkg) { | |
f815daf2 | 1214 | HV *const stash = gv_stashsv(pkg, GV_ADD); |
a954f6ee | 1215 | SvREFCNT_dec(pkg); |
288b8c02 NC |
1216 | (void)sv_bless(rv, stash); |
1217 | } | |
1218 | ||
9274aefd | 1219 | if (RX_EXTFLAGS(rx) & RXf_TAINTED) { |
e08e52cf | 1220 | SvTAINTED_on(rv); |
9274aefd DM |
1221 | SvTAINTED_on(SvRV(rv)); |
1222 | } | |
c8c13c22 JB |
1223 | XPUSHs(rv); |
1224 | RETURN; | |
8782bef2 GB |
1225 | } |
1226 | ||
a0d0e21e LW |
1227 | PP(pp_match) |
1228 | { | |
97aff369 | 1229 | dVAR; dSP; dTARG; |
a0d0e21e | 1230 | register PMOP *pm = cPMOP; |
d65afb4b | 1231 | PMOP *dynpm = pm; |
0d46e09a SP |
1232 | register const char *t; |
1233 | register const char *s; | |
5c144d81 | 1234 | const char *strend; |
a0d0e21e | 1235 | I32 global; |
1ed74d04 | 1236 | U8 r_flags = REXEC_CHECKED; |
5c144d81 | 1237 | const char *truebase; /* Start of string */ |
aaa362c4 | 1238 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1239 | bool rxtainted; |
a3b680e6 | 1240 | const I32 gimme = GIMME; |
a0d0e21e | 1241 | STRLEN len; |
748a9306 | 1242 | I32 minmatch = 0; |
a3b680e6 | 1243 | const I32 oldsave = PL_savestack_ix; |
f86702cc | 1244 | I32 update_minmatch = 1; |
e60df1fa | 1245 | I32 had_zerolen = 0; |
58e23c8d | 1246 | U32 gpos = 0; |
a0d0e21e | 1247 | |
533c011a | 1248 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1249 | TARG = POPs; |
59f00321 RGS |
1250 | else if (PL_op->op_private & OPpTARGET_MY) |
1251 | GETTARGET; | |
a0d0e21e | 1252 | else { |
54b9620d | 1253 | TARG = DEFSV; |
a0d0e21e LW |
1254 | EXTEND(SP,1); |
1255 | } | |
d9f424b2 | 1256 | |
c277df42 | 1257 | PUTBACK; /* EVAL blocks need stack_sp. */ |
69dc4b30 FC |
1258 | /* Skip get-magic if this is a qr// clone, because regcomp has |
1259 | already done it. */ | |
1260 | s = ((struct regexp *)SvANY(rx))->mother_re | |
1261 | ? SvPV_nomg_const(TARG, len) | |
1262 | : SvPV_const(TARG, len); | |
a0d0e21e | 1263 | if (!s) |
2269b42e | 1264 | DIE(aTHX_ "panic: pp_match"); |
890ce7af | 1265 | strend = s + len; |
07bc277f | 1266 | rxtainted = ((RX_EXTFLAGS(rx) & RXf_TAINTED) || |
3280af22 | 1267 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 1268 | TAINT_NOT; |
a0d0e21e | 1269 | |
a30b2f1f | 1270 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 1271 | |
d65afb4b | 1272 | /* PMdf_USED is set after a ?? matches once */ |
c737faaf YO |
1273 | if ( |
1274 | #ifdef USE_ITHREADS | |
1275 | SvREADONLY(PL_regex_pad[pm->op_pmoffset]) | |
1276 | #else | |
1277 | pm->op_pmflags & PMf_USED | |
1278 | #endif | |
1279 | ) { | |
c277df42 | 1280 | failure: |
a0d0e21e LW |
1281 | if (gimme == G_ARRAY) |
1282 | RETURN; | |
1283 | RETPUSHNO; | |
1284 | } | |
1285 | ||
c737faaf YO |
1286 | |
1287 | ||
d65afb4b | 1288 | /* empty pattern special-cased to use last successful pattern if possible */ |
220fc49f | 1289 | if (!RX_PRELEN(rx) && PL_curpm) { |
3280af22 | 1290 | pm = PL_curpm; |
aaa362c4 | 1291 | rx = PM_GETRE(pm); |
a0d0e21e | 1292 | } |
d65afb4b | 1293 | |
07bc277f | 1294 | if (RX_MINLEN(rx) > (I32)len) |
d65afb4b | 1295 | goto failure; |
c277df42 | 1296 | |
a0d0e21e | 1297 | truebase = t = s; |
ad94a511 IZ |
1298 | |
1299 | /* XXXX What part of this is needed with true \G-support? */ | |
d65afb4b | 1300 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
07bc277f | 1301 | RX_OFFS(rx)[0].start = -1; |
a0d0e21e | 1302 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
c445ea15 | 1303 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 | 1304 | if (mg && mg->mg_len >= 0) { |
07bc277f NC |
1305 | if (!(RX_EXTFLAGS(rx) & RXf_GPOS_SEEN)) |
1306 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; | |
1307 | else if (RX_EXTFLAGS(rx) & RXf_ANCH_GPOS) { | |
0ef3e39e | 1308 | r_flags |= REXEC_IGNOREPOS; |
07bc277f NC |
1309 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; |
1310 | } else if (RX_EXTFLAGS(rx) & RXf_GPOS_FLOAT) | |
58e23c8d YO |
1311 | gpos = mg->mg_len; |
1312 | else | |
07bc277f NC |
1313 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; |
1314 | minmatch = (mg->mg_flags & MGf_MINMATCH) ? RX_GOFS(rx) + 1 : 0; | |
f86702cc | 1315 | update_minmatch = 0; |
748a9306 | 1316 | } |
a0d0e21e LW |
1317 | } |
1318 | } | |
a229a030 | 1319 | /* XXX: comment out !global get safe $1 vars after a |
62e7980d | 1320 | match, BUT be aware that this leads to dramatic slowdowns on |
a229a030 YO |
1321 | /g matches against large strings. So far a solution to this problem |
1322 | appears to be quite tricky. | |
1323 | Test for the unsafe vars are TODO for now. */ | |
0d8a731b DM |
1324 | if ( (!global && RX_NPARENS(rx)) |
1325 | || SvTEMP(TARG) || SvAMAGIC(TARG) || PL_sawampersand | |
1326 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY))) | |
14977893 | 1327 | r_flags |= REXEC_COPY_STR; |
1c846c1f | 1328 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
1329 | r_flags |= REXEC_SCREAM; |
1330 | ||
d7be1480 | 1331 | play_it_again: |
07bc277f NC |
1332 | if (global && RX_OFFS(rx)[0].start != -1) { |
1333 | t = s = RX_OFFS(rx)[0].end + truebase - RX_GOFS(rx); | |
1334 | if ((s + RX_MINLEN(rx)) > strend || s < truebase) | |
a0d0e21e | 1335 | goto nope; |
f86702cc | 1336 | if (update_minmatch++) |
e60df1fa | 1337 | minmatch = had_zerolen; |
a0d0e21e | 1338 | } |
07bc277f | 1339 | if (RX_EXTFLAGS(rx) & RXf_USE_INTUIT && |
3c8556c3 | 1340 | DO_UTF8(TARG) == (RX_UTF8(rx) != 0)) { |
5c144d81 NC |
1341 | /* FIXME - can PL_bostr be made const char *? */ |
1342 | PL_bostr = (char *)truebase; | |
f9f4320a | 1343 | s = CALLREG_INTUIT_START(rx, TARG, (char *)s, (char *)strend, r_flags, NULL); |
f722798b IZ |
1344 | |
1345 | if (!s) | |
1346 | goto nope; | |
07bc277f | 1347 | if ( (RX_EXTFLAGS(rx) & RXf_CHECK_ALL) |
14977893 | 1348 | && !PL_sawampersand |
07bc277f NC |
1349 | && !(RX_EXTFLAGS(rx) & RXf_PMf_KEEPCOPY) |
1350 | && ((RX_EXTFLAGS(rx) & RXf_NOSCAN) | |
1351 | || !((RX_EXTFLAGS(rx) & RXf_INTUIT_TAIL) | |
05b4157f GS |
1352 | && (r_flags & REXEC_SCREAM))) |
1353 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
f722798b | 1354 | goto yup; |
a0d0e21e | 1355 | } |
77da2310 NC |
1356 | if (!CALLREGEXEC(rx, (char*)s, (char *)strend, (char*)truebase, |
1357 | minmatch, TARG, NUM2PTR(void*, gpos), r_flags)) | |
1358 | goto ret_no; | |
1359 | ||
1360 | PL_curpm = pm; | |
1361 | if (dynpm->op_pmflags & PMf_ONCE) { | |
c737faaf | 1362 | #ifdef USE_ITHREADS |
77da2310 | 1363 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); |
c737faaf | 1364 | #else |
77da2310 | 1365 | dynpm->op_pmflags |= PMf_USED; |
c737faaf | 1366 | #endif |
a0d0e21e | 1367 | } |
a0d0e21e LW |
1368 | |
1369 | gotcha: | |
72311751 GS |
1370 | if (rxtainted) |
1371 | RX_MATCH_TAINTED_on(rx); | |
1372 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1373 | if (gimme == G_ARRAY) { |
07bc277f | 1374 | const I32 nparens = RX_NPARENS(rx); |
a3b680e6 | 1375 | I32 i = (global && !nparens) ? 1 : 0; |
a0d0e21e | 1376 | |
c277df42 | 1377 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1378 | EXTEND(SP, nparens + i); |
1379 | EXTEND_MORTAL(nparens + i); | |
1380 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e | 1381 | PUSHs(sv_newmortal()); |
07bc277f NC |
1382 | if ((RX_OFFS(rx)[i].start != -1) && RX_OFFS(rx)[i].end != -1 ) { |
1383 | const I32 len = RX_OFFS(rx)[i].end - RX_OFFS(rx)[i].start; | |
1384 | s = RX_OFFS(rx)[i].start + truebase; | |
1385 | if (RX_OFFS(rx)[i].end < 0 || RX_OFFS(rx)[i].start < 0 || | |
290deeac A |
1386 | len < 0 || len > strend - s) |
1387 | DIE(aTHX_ "panic: pp_match start/end pointers"); | |
a0d0e21e | 1388 | sv_setpvn(*SP, s, len); |
cce850e4 | 1389 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1390 | SvUTF8_on(*SP); |
a0d0e21e LW |
1391 | } |
1392 | } | |
1393 | if (global) { | |
d65afb4b | 1394 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
6136c704 | 1395 | MAGIC* mg = NULL; |
0af80b60 HS |
1396 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
1397 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1398 | if (!mg) { | |
d83f0a82 NC |
1399 | #ifdef PERL_OLD_COPY_ON_WRITE |
1400 | if (SvIsCOW(TARG)) | |
1401 | sv_force_normal_flags(TARG, 0); | |
1402 | #endif | |
1403 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1404 | &PL_vtbl_mglob, NULL, 0); | |
0af80b60 | 1405 | } |
07bc277f NC |
1406 | if (RX_OFFS(rx)[0].start != -1) { |
1407 | mg->mg_len = RX_OFFS(rx)[0].end; | |
1408 | if (RX_OFFS(rx)[0].start + RX_GOFS(rx) == (UV)RX_OFFS(rx)[0].end) | |
0af80b60 HS |
1409 | mg->mg_flags |= MGf_MINMATCH; |
1410 | else | |
1411 | mg->mg_flags &= ~MGf_MINMATCH; | |
1412 | } | |
1413 | } | |
07bc277f NC |
1414 | had_zerolen = (RX_OFFS(rx)[0].start != -1 |
1415 | && (RX_OFFS(rx)[0].start + RX_GOFS(rx) | |
1416 | == (UV)RX_OFFS(rx)[0].end)); | |
c277df42 | 1417 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1418 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1419 | goto play_it_again; |
1420 | } | |
ffc61ed2 | 1421 | else if (!nparens) |
bde848c5 | 1422 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1423 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1424 | RETURN; |
1425 | } | |
1426 | else { | |
1427 | if (global) { | |
cbbf8932 | 1428 | MAGIC* mg; |
a0d0e21e | 1429 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
14befaf4 | 1430 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
cbbf8932 AL |
1431 | else |
1432 | mg = NULL; | |
a0d0e21e | 1433 | if (!mg) { |
d83f0a82 NC |
1434 | #ifdef PERL_OLD_COPY_ON_WRITE |
1435 | if (SvIsCOW(TARG)) | |
1436 | sv_force_normal_flags(TARG, 0); | |
1437 | #endif | |
1438 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1439 | &PL_vtbl_mglob, NULL, 0); | |
a0d0e21e | 1440 | } |
07bc277f NC |
1441 | if (RX_OFFS(rx)[0].start != -1) { |
1442 | mg->mg_len = RX_OFFS(rx)[0].end; | |
1443 | if (RX_OFFS(rx)[0].start + RX_GOFS(rx) == (UV)RX_OFFS(rx)[0].end) | |
748a9306 LW |
1444 | mg->mg_flags |= MGf_MINMATCH; |
1445 | else | |
1446 | mg->mg_flags &= ~MGf_MINMATCH; | |
1447 | } | |
a0d0e21e | 1448 | } |
4633a7c4 | 1449 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1450 | RETPUSHYES; |
1451 | } | |
1452 | ||
f722798b | 1453 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1454 | if (rxtainted) |
1455 | RX_MATCH_TAINTED_on(rx); | |
1456 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1457 | PL_curpm = pm; |
c737faaf YO |
1458 | if (dynpm->op_pmflags & PMf_ONCE) { |
1459 | #ifdef USE_ITHREADS | |
1460 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); | |
1461 | #else | |
1462 | dynpm->op_pmflags |= PMf_USED; | |
1463 | #endif | |
1464 | } | |
cf93c79d | 1465 | if (RX_MATCH_COPIED(rx)) |
07bc277f | 1466 | Safefree(RX_SUBBEG(rx)); |
cf93c79d | 1467 | RX_MATCH_COPIED_off(rx); |
07bc277f | 1468 | RX_SUBBEG(rx) = NULL; |
a0d0e21e | 1469 | if (global) { |
5c144d81 | 1470 | /* FIXME - should rx->subbeg be const char *? */ |
07bc277f NC |
1471 | RX_SUBBEG(rx) = (char *) truebase; |
1472 | RX_OFFS(rx)[0].start = s - truebase; | |
a30b2f1f | 1473 | if (RX_MATCH_UTF8(rx)) { |
07bc277f NC |
1474 | char * const t = (char*)utf8_hop((U8*)s, RX_MINLENRET(rx)); |
1475 | RX_OFFS(rx)[0].end = t - truebase; | |
60aeb6fd NIS |
1476 | } |
1477 | else { | |
07bc277f | 1478 | RX_OFFS(rx)[0].end = s - truebase + RX_MINLENRET(rx); |
60aeb6fd | 1479 | } |
07bc277f | 1480 | RX_SUBLEN(rx) = strend - truebase; |
a0d0e21e | 1481 | goto gotcha; |
1c846c1f | 1482 | } |
07bc277f | 1483 | if (PL_sawampersand || RX_EXTFLAGS(rx) & RXf_PMf_KEEPCOPY) { |
14977893 | 1484 | I32 off; |
f8c7b90f | 1485 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
1486 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
1487 | if (DEBUG_C_TEST) { | |
1488 | PerlIO_printf(Perl_debug_log, | |
1489 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", | |
6c9570dc | 1490 | (int) SvTYPE(TARG), (void*)truebase, (void*)t, |
ed252734 NC |
1491 | (int)(t-truebase)); |
1492 | } | |
bdd9a1b1 NC |
1493 | RX_SAVED_COPY(rx) = sv_setsv_cow(RX_SAVED_COPY(rx), TARG); |
1494 | RX_SUBBEG(rx) | |
1495 | = (char *) SvPVX_const(RX_SAVED_COPY(rx)) + (t - truebase); | |
1496 | assert (SvPOKp(RX_SAVED_COPY(rx))); | |
ed252734 NC |
1497 | } else |
1498 | #endif | |
1499 | { | |
14977893 | 1500 | |
07bc277f | 1501 | RX_SUBBEG(rx) = savepvn(t, strend - t); |
f8c7b90f | 1502 | #ifdef PERL_OLD_COPY_ON_WRITE |
bdd9a1b1 | 1503 | RX_SAVED_COPY(rx) = NULL; |
ed252734 NC |
1504 | #endif |
1505 | } | |
07bc277f | 1506 | RX_SUBLEN(rx) = strend - t; |
14977893 | 1507 | RX_MATCH_COPIED_on(rx); |
07bc277f NC |
1508 | off = RX_OFFS(rx)[0].start = s - t; |
1509 | RX_OFFS(rx)[0].end = off + RX_MINLENRET(rx); | |
14977893 JH |
1510 | } |
1511 | else { /* startp/endp are used by @- @+. */ | |
07bc277f NC |
1512 | RX_OFFS(rx)[0].start = s - truebase; |
1513 | RX_OFFS(rx)[0].end = s - truebase + RX_MINLENRET(rx); | |
14977893 | 1514 | } |
07bc277f | 1515 | /* including RX_NPARENS(rx) in the below code seems highly suspicious. |
cde0cee5 | 1516 | -dmq */ |
07bc277f | 1517 | RX_NPARENS(rx) = RX_LASTPAREN(rx) = RX_LASTCLOSEPAREN(rx) = 0; /* used by @-, @+, and $^N */ |
4633a7c4 | 1518 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1519 | RETPUSHYES; |
1520 | ||
1521 | nope: | |
a0d0e21e | 1522 | ret_no: |
d65afb4b | 1523 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e | 1524 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
6136c704 | 1525 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1526 | if (mg) |
565764a8 | 1527 | mg->mg_len = -1; |
a0d0e21e LW |
1528 | } |
1529 | } | |
4633a7c4 | 1530 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1531 | if (gimme == G_ARRAY) |
1532 | RETURN; | |
1533 | RETPUSHNO; | |
1534 | } | |
1535 | ||
1536 | OP * | |
864dbfa3 | 1537 | Perl_do_readline(pTHX) |
a0d0e21e | 1538 | { |
27da23d5 | 1539 | dVAR; dSP; dTARGETSTACKED; |
a0d0e21e LW |
1540 | register SV *sv; |
1541 | STRLEN tmplen = 0; | |
1542 | STRLEN offset; | |
760ac839 | 1543 | PerlIO *fp; |
a3b680e6 AL |
1544 | register IO * const io = GvIO(PL_last_in_gv); |
1545 | register const I32 type = PL_op->op_type; | |
1546 | const I32 gimme = GIMME_V; | |
a0d0e21e | 1547 | |
6136c704 | 1548 | if (io) { |
50db69d8 | 1549 | const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar); |
6136c704 | 1550 | if (mg) { |
50db69d8 | 1551 | Perl_tied_method(aTHX_ "READLINE", SP, MUTABLE_SV(io), mg, gimme, 0); |
6136c704 | 1552 | if (gimme == G_SCALAR) { |
50db69d8 NC |
1553 | SPAGAIN; |
1554 | SvSetSV_nosteal(TARG, TOPs); | |
1555 | SETTARG; | |
6136c704 | 1556 | } |
50db69d8 | 1557 | return NORMAL; |
0b7c7b4f | 1558 | } |
e79b0511 | 1559 | } |
4608196e | 1560 | fp = NULL; |
a0d0e21e LW |
1561 | if (io) { |
1562 | fp = IoIFP(io); | |
1563 | if (!fp) { | |
1564 | if (IoFLAGS(io) & IOf_ARGV) { | |
1565 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1566 | IoLINES(io) = 0; |
3280af22 | 1567 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1568 | IoFLAGS(io) &= ~IOf_START; |
4608196e | 1569 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,NULL); |
76f68e9b | 1570 | sv_setpvs(GvSVn(PL_last_in_gv), "-"); |
3280af22 | 1571 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d GS |
1572 | fp = IoIFP(io); |
1573 | goto have_fp; | |
a0d0e21e LW |
1574 | } |
1575 | } | |
3280af22 | 1576 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1577 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1578 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1579 | } |
1580 | } | |
0d44d22b NC |
1581 | else if (type == OP_GLOB) |
1582 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1583 | } |
1584 | else if (type == OP_GLOB) | |
1585 | SP--; | |
7716c5c5 | 1586 | else if (IoTYPE(io) == IoTYPE_WRONLY) { |
a5390457 | 1587 | report_wrongway_fh(PL_last_in_gv, '>'); |
a00b5bd3 | 1588 | } |
a0d0e21e LW |
1589 | } |
1590 | if (!fp) { | |
041457d9 DM |
1591 | if ((!io || !(IoFLAGS(io) & IOf_START)) |
1592 | && ckWARN2(WARN_GLOB, WARN_CLOSED)) | |
1593 | { | |
3f4520fe | 1594 | if (type == OP_GLOB) |
9014280d | 1595 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a GS |
1596 | "glob failed (can't start child: %s)", |
1597 | Strerror(errno)); | |
69282e91 | 1598 | else |
831e4cc3 | 1599 | report_evil_fh(PL_last_in_gv); |
3f4520fe | 1600 | } |
54310121 | 1601 | if (gimme == G_SCALAR) { |
79628082 | 1602 | /* undef TARG, and push that undefined value */ |
ba92458f AE |
1603 | if (type != OP_RCATLINE) { |
1604 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1605 | SvOK_off(TARG); |
ba92458f | 1606 | } |
a0d0e21e LW |
1607 | PUSHTARG; |
1608 | } | |
1609 | RETURN; | |
1610 | } | |
a2008d6d | 1611 | have_fp: |
54310121 | 1612 | if (gimme == G_SCALAR) { |
a0d0e21e | 1613 | sv = TARG; |
0f722b55 RGS |
1614 | if (type == OP_RCATLINE && SvGMAGICAL(sv)) |
1615 | mg_get(sv); | |
48de12d9 RGS |
1616 | if (SvROK(sv)) { |
1617 | if (type == OP_RCATLINE) | |
1618 | SvPV_force_nolen(sv); | |
1619 | else | |
1620 | sv_unref(sv); | |
1621 | } | |
f7877b28 NC |
1622 | else if (isGV_with_GP(sv)) { |
1623 | SvPV_force_nolen(sv); | |
1624 | } | |
862a34c6 | 1625 | SvUPGRADE(sv, SVt_PV); |
a0d0e21e | 1626 | tmplen = SvLEN(sv); /* remember if already alloced */ |
f72e8700 JJ |
1627 | if (!tmplen && !SvREADONLY(sv)) { |
1628 | /* try short-buffering it. Please update t/op/readline.t | |
1629 | * if you change the growth length. | |
1630 | */ | |
1631 | Sv_Grow(sv, 80); | |
1632 | } | |
2b5e58c4 AMS |
1633 | offset = 0; |
1634 | if (type == OP_RCATLINE && SvOK(sv)) { | |
1635 | if (!SvPOK(sv)) { | |
8b6b16e7 | 1636 | SvPV_force_nolen(sv); |
2b5e58c4 | 1637 | } |
a0d0e21e | 1638 | offset = SvCUR(sv); |
2b5e58c4 | 1639 | } |
a0d0e21e | 1640 | } |
54310121 | 1641 | else { |
561b68a9 | 1642 | sv = sv_2mortal(newSV(80)); |
54310121 | 1643 | offset = 0; |
1644 | } | |
fbad3eb5 | 1645 | |
3887d568 AP |
1646 | /* This should not be marked tainted if the fp is marked clean */ |
1647 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1648 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1649 | TAINT; \ | |
1650 | SvTAINTED_on(sv); \ | |
1651 | } | |
1652 | ||
684bef36 | 1653 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1654 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1655 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1656 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1657 | |
a0d0e21e | 1658 | for (;;) { |
09e8efcc | 1659 | PUTBACK; |
fbad3eb5 | 1660 | if (!sv_gets(sv, fp, offset) |
2d726892 TF |
1661 | && (type == OP_GLOB |
1662 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
1663 | || PerlIO_error(fp))) | |
fbad3eb5 | 1664 | { |
760ac839 | 1665 | PerlIO_clearerr(fp); |
a0d0e21e | 1666 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1667 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1668 | if (fp) |
1669 | continue; | |
3280af22 | 1670 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1671 | } |
1672 | else if (type == OP_GLOB) { | |
a2a5de95 NC |
1673 | if (!do_close(PL_last_in_gv, FALSE)) { |
1674 | Perl_ck_warner(aTHX_ packWARN(WARN_GLOB), | |
1675 | "glob failed (child exited with status %d%s)", | |
1676 | (int)(STATUS_CURRENT >> 8), | |
1677 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); | |
4eb79ab5 | 1678 | } |
a0d0e21e | 1679 | } |
54310121 | 1680 | if (gimme == G_SCALAR) { |
ba92458f AE |
1681 | if (type != OP_RCATLINE) { |
1682 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1683 | SvOK_off(TARG); |
ba92458f | 1684 | } |
09e8efcc | 1685 | SPAGAIN; |
a0d0e21e LW |
1686 | PUSHTARG; |
1687 | } | |
3887d568 | 1688 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1689 | RETURN; |
1690 | } | |
3887d568 | 1691 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1692 | IoLINES(io)++; |
b9fee9ba | 1693 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1694 | SvSETMAGIC(sv); |
09e8efcc | 1695 | SPAGAIN; |
a0d0e21e | 1696 | XPUSHs(sv); |
a0d0e21e | 1697 | if (type == OP_GLOB) { |
349d4f2f | 1698 | const char *t1; |
a0d0e21e | 1699 | |
3280af22 | 1700 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
6136c704 | 1701 | char * const tmps = SvEND(sv) - 1; |
aa07b2f6 | 1702 | if (*tmps == *SvPVX_const(PL_rs)) { |
c07a80fd | 1703 | *tmps = '\0'; |
b162af07 | 1704 | SvCUR_set(sv, SvCUR(sv) - 1); |
c07a80fd | 1705 | } |
1706 | } | |
349d4f2f NC |
1707 | for (t1 = SvPVX_const(sv); *t1; t1++) |
1708 | if (!isALPHA(*t1) && !isDIGIT(*t1) && | |
1709 | strchr("$&*(){}[]'\";\\|?<>~`", *t1)) | |
a0d0e21e | 1710 | break; |
349d4f2f | 1711 | if (*t1 && PerlLIO_lstat(SvPVX_const(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1712 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1713 | continue; | |
1714 | } | |
2d79bf7f | 1715 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
d4c19fe8 AL |
1716 | if (ckWARN(WARN_UTF8)) { |
1717 | const U8 * const s = (const U8*)SvPVX_const(sv) + offset; | |
1718 | const STRLEN len = SvCUR(sv) - offset; | |
1719 | const U8 *f; | |
1720 | ||
1721 | if (!is_utf8_string_loc(s, len, &f)) | |
1722 | /* Emulate :encoding(utf8) warning in the same case. */ | |
1723 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
1724 | "utf8 \"\\x%02X\" does not map to Unicode", | |
1725 | f < (U8*)SvEND(sv) ? *f : 0); | |
1726 | } | |
a0d0e21e | 1727 | } |
54310121 | 1728 | if (gimme == G_ARRAY) { |
a0d0e21e | 1729 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1da4ca5f | 1730 | SvPV_shrink_to_cur(sv); |
a0d0e21e | 1731 | } |
561b68a9 | 1732 | sv = sv_2mortal(newSV(80)); |
a0d0e21e LW |
1733 | continue; |
1734 | } | |
54310121 | 1735 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e | 1736 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
d5b5861b NC |
1737 | const STRLEN new_len |
1738 | = SvCUR(sv) < 60 ? 80 : SvCUR(sv)+40; /* allow some slop */ | |
1da4ca5f | 1739 | SvPV_renew(sv, new_len); |
a0d0e21e LW |
1740 | } |
1741 | RETURN; | |
1742 | } | |
1743 | } | |
1744 | ||
a0d0e21e LW |
1745 | PP(pp_helem) |
1746 | { | |
97aff369 | 1747 | dVAR; dSP; |
760ac839 | 1748 | HE* he; |
ae77835f | 1749 | SV **svp; |
c445ea15 | 1750 | SV * const keysv = POPs; |
85fbaab2 | 1751 | HV * const hv = MUTABLE_HV(POPs); |
a3b680e6 AL |
1752 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
1753 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
be6c24e0 | 1754 | SV *sv; |
c158a4fd | 1755 | const U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvSHARED_HASH(keysv) : 0; |
92970b93 | 1756 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
d30e492c | 1757 | bool preeminent = TRUE; |
a0d0e21e | 1758 | |
d4c19fe8 | 1759 | if (SvTYPE(hv) != SVt_PVHV) |
a0d0e21e | 1760 | RETPUSHUNDEF; |
d4c19fe8 | 1761 | |
92970b93 | 1762 | if (localizing) { |
d4c19fe8 AL |
1763 | MAGIC *mg; |
1764 | HV *stash; | |
d30e492c VP |
1765 | |
1766 | /* If we can determine whether the element exist, | |
1767 | * Try to preserve the existenceness of a tied hash | |
1768 | * element by using EXISTS and DELETE if possible. | |
1769 | * Fallback to FETCH and STORE otherwise. */ | |
1770 | if (SvCANEXISTDELETE(hv) || mg_find((const SV *)hv, PERL_MAGIC_env)) | |
1771 | preeminent = hv_exists_ent(hv, keysv, 0); | |
d4c19fe8 | 1772 | } |
d30e492c | 1773 | |
d4c19fe8 AL |
1774 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
1775 | svp = he ? &HeVAL(he) : NULL; | |
a0d0e21e | 1776 | if (lval) { |
3280af22 | 1777 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 1778 | SV* lv; |
1779 | SV* key2; | |
2d8e6c8d | 1780 | if (!defer) { |
be2597df | 1781 | DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv)); |
2d8e6c8d | 1782 | } |
68dc0745 | 1783 | lv = sv_newmortal(); |
1784 | sv_upgrade(lv, SVt_PVLV); | |
1785 | LvTYPE(lv) = 'y'; | |
6136c704 | 1786 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, NULL, 0); |
68dc0745 | 1787 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
b37c2d43 | 1788 | LvTARG(lv) = SvREFCNT_inc_simple(hv); |
68dc0745 | 1789 | LvTARGLEN(lv) = 1; |
1790 | PUSHs(lv); | |
1791 | RETURN; | |
1792 | } | |
92970b93 | 1793 | if (localizing) { |
bfcb3514 | 1794 | if (HvNAME_get(hv) && isGV(*svp)) |
159b6efe | 1795 | save_gp(MUTABLE_GV(*svp), !(PL_op->op_flags & OPf_SPECIAL)); |
47cfc530 VP |
1796 | else if (preeminent) |
1797 | save_helem_flags(hv, keysv, svp, | |
1798 | (PL_op->op_flags & OPf_SPECIAL) ? 0 : SAVEf_SETMAGIC); | |
1799 | else | |
1800 | SAVEHDELETE(hv, keysv); | |
5f05dabc | 1801 | } |
9026059d GG |
1802 | else if (PL_op->op_private & OPpDEREF) { |
1803 | PUSHs(vivify_ref(*svp, PL_op->op_private & OPpDEREF)); | |
1804 | RETURN; | |
1805 | } | |
a0d0e21e | 1806 | } |
3280af22 | 1807 | sv = (svp ? *svp : &PL_sv_undef); |
fd69380d DM |
1808 | /* Originally this did a conditional C<sv = sv_mortalcopy(sv)>; this |
1809 | * was to make C<local $tied{foo} = $tied{foo}> possible. | |
1810 | * However, it seems no longer to be needed for that purpose, and | |
1811 | * introduced a new bug: stuff like C<while ($hash{taintedval} =~ /.../g> | |
1812 | * would loop endlessly since the pos magic is getting set on the | |
1813 | * mortal copy and lost. However, the copy has the effect of | |
1814 | * triggering the get magic, and losing it altogether made things like | |
1815 | * c<$tied{foo};> in void context no longer do get magic, which some | |
1816 | * code relied on. Also, delayed triggering of magic on @+ and friends | |
1817 | * meant the original regex may be out of scope by now. So as a | |
1818 | * compromise, do the get magic here. (The MGf_GSKIP flag will stop it | |
1819 | * being called too many times). */ | |
39cf747a | 1820 | if (!lval && SvRMAGICAL(hv) && SvGMAGICAL(sv)) |
fd69380d | 1821 | mg_get(sv); |
be6c24e0 | 1822 | PUSHs(sv); |
a0d0e21e LW |
1823 | RETURN; |
1824 | } | |
1825 | ||
a0d0e21e LW |
1826 | PP(pp_iter) |
1827 | { | |
97aff369 | 1828 | dVAR; dSP; |
c09156bb | 1829 | register PERL_CONTEXT *cx; |
dc09a129 | 1830 | SV *sv, *oldsv; |
1d7c1841 | 1831 | SV **itersvp; |
d01136d6 BS |
1832 | AV *av = NULL; /* used for LOOP_FOR on arrays and the stack */ |
1833 | bool av_is_stack = FALSE; | |
a0d0e21e | 1834 | |
924508f0 | 1835 | EXTEND(SP, 1); |
a0d0e21e | 1836 | cx = &cxstack[cxstack_ix]; |
3b719c58 | 1837 | if (!CxTYPE_is_LOOP(cx)) |
cea2e8a9 | 1838 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1839 | |
1d7c1841 | 1840 | itersvp = CxITERVAR(cx); |
d01136d6 | 1841 | if (CxTYPE(cx) == CXt_LOOP_LAZYSV) { |
89ea2908 | 1842 | /* string increment */ |
d01136d6 BS |
1843 | SV* cur = cx->blk_loop.state_u.lazysv.cur; |
1844 | SV *end = cx->blk_loop.state_u.lazysv.end; | |
267cc4a8 NC |
1845 | /* If the maximum is !SvOK(), pp_enteriter substitutes PL_sv_no. |
1846 | It has SvPVX of "" and SvCUR of 0, which is what we want. */ | |
4fe3f0fa | 1847 | STRLEN maxlen = 0; |
d01136d6 | 1848 | const char *max = SvPV_const(end, maxlen); |
89ea2908 | 1849 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
1d7c1841 | 1850 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1851 | /* safe to reuse old SV */ |
1d7c1841 | 1852 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1853 | } |
1c846c1f | 1854 | else |
eaa5c2d6 GA |
1855 | { |
1856 | /* we need a fresh SV every time so that loop body sees a | |
1857 | * completely new SV for closures/references to work as | |
1858 | * they used to */ | |
dc09a129 | 1859 | oldsv = *itersvp; |
1d7c1841 | 1860 | *itersvp = newSVsv(cur); |
dc09a129 | 1861 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1862 | } |
aa07b2f6 | 1863 | if (strEQ(SvPVX_const(cur), max)) |
89ea2908 GA |
1864 | sv_setiv(cur, 0); /* terminate next time */ |
1865 | else | |
1866 | sv_inc(cur); | |
1867 | RETPUSHYES; | |
1868 | } | |
1869 | RETPUSHNO; | |
d01136d6 BS |
1870 | } |
1871 | else if (CxTYPE(cx) == CXt_LOOP_LAZYIV) { | |
89ea2908 | 1872 | /* integer increment */ |
d01136d6 | 1873 | if (cx->blk_loop.state_u.lazyiv.cur > cx->blk_loop.state_u.lazyiv.end) |
89ea2908 | 1874 | RETPUSHNO; |
7f61b687 | 1875 | |
3db8f154 | 1876 | /* don't risk potential race */ |
1d7c1841 | 1877 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1878 | /* safe to reuse old SV */ |
d01136d6 | 1879 | sv_setiv(*itersvp, cx->blk_loop.state_u.lazyiv.cur++); |
eaa5c2d6 | 1880 | } |
1c846c1f | 1881 | else |
eaa5c2d6 GA |
1882 | { |
1883 | /* we need a fresh SV every time so that loop body sees a | |
1884 | * completely new SV for closures/references to work as they | |
1885 | * used to */ | |
dc09a129 | 1886 | oldsv = *itersvp; |
d01136d6 | 1887 | *itersvp = newSViv(cx->blk_loop.state_u.lazyiv.cur++); |
dc09a129 | 1888 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1889 | } |
a2309040 JH |
1890 | |
1891 | /* Handle end of range at IV_MAX */ | |
d01136d6 BS |
1892 | if ((cx->blk_loop.state_u.lazyiv.cur == IV_MIN) && |
1893 | (cx->blk_loop.state_u.lazyiv.end == IV_MAX)) | |
a2309040 | 1894 | { |
d01136d6 BS |
1895 | cx->blk_loop.state_u.lazyiv.cur++; |
1896 | cx->blk_loop.state_u.lazyiv.end++; | |
a2309040 JH |
1897 | } |
1898 | ||
89ea2908 GA |
1899 | RETPUSHYES; |
1900 | } | |
1901 | ||
1902 | /* iterate array */ | |
d01136d6 BS |
1903 | assert(CxTYPE(cx) == CXt_LOOP_FOR); |
1904 | av = cx->blk_loop.state_u.ary.ary; | |
1905 | if (!av) { | |
1906 | av_is_stack = TRUE; | |
1907 | av = PL_curstack; | |
1908 | } | |
ef3e5ea9 | 1909 | if (PL_op->op_private & OPpITER_REVERSED) { |
d01136d6 BS |
1910 | if (cx->blk_loop.state_u.ary.ix <= (av_is_stack |
1911 | ? cx->blk_loop.resetsp + 1 : 0)) | |
ef3e5ea9 | 1912 | RETPUSHNO; |
a0d0e21e | 1913 | |
ef3e5ea9 | 1914 | if (SvMAGICAL(av) || AvREIFY(av)) { |
d01136d6 | 1915 | SV * const * const svp = av_fetch(av, --cx->blk_loop.state_u.ary.ix, FALSE); |
a0714e2c | 1916 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
1917 | } |
1918 | else { | |
d01136d6 | 1919 | sv = AvARRAY(av)[--cx->blk_loop.state_u.ary.ix]; |
ef3e5ea9 | 1920 | } |
d42935ef JH |
1921 | } |
1922 | else { | |
d01136d6 | 1923 | if (cx->blk_loop.state_u.ary.ix >= (av_is_stack ? cx->blk_oldsp : |
ef3e5ea9 NC |
1924 | AvFILL(av))) |
1925 | RETPUSHNO; | |
1926 | ||
1927 | if (SvMAGICAL(av) || AvREIFY(av)) { | |
d01136d6 | 1928 | SV * const * const svp = av_fetch(av, ++cx->blk_loop.state_u.ary.ix, FALSE); |
a0714e2c | 1929 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
1930 | } |
1931 | else { | |
d01136d6 | 1932 | sv = AvARRAY(av)[++cx->blk_loop.state_u.ary.ix]; |
ef3e5ea9 | 1933 | } |
d42935ef | 1934 | } |
ef3e5ea9 | 1935 | |
0565a181 | 1936 | if (sv && SvIS_FREED(sv)) { |
a0714e2c | 1937 | *itersvp = NULL; |
b6c83531 | 1938 | Perl_croak(aTHX_ "Use of freed value in iteration"); |
cccede53 DM |
1939 | } |
1940 | ||
d01136d6 | 1941 | if (sv) { |
a0d0e21e | 1942 | SvTEMP_off(sv); |
d01136d6 BS |
1943 | SvREFCNT_inc_simple_void_NN(sv); |
1944 | } | |
a0d0e21e | 1945 | else |
3280af22 | 1946 | sv = &PL_sv_undef; |
d01136d6 BS |
1947 | if (!av_is_stack && sv == &PL_sv_undef) { |
1948 | SV *lv = newSV_type(SVt_PVLV); | |
1949 | LvTYPE(lv) = 'y'; | |
1950 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); | |
b37c2d43 | 1951 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
d01136d6 | 1952 | LvTARGOFF(lv) = cx->blk_loop.state_u.ary.ix; |
42718184 | 1953 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
d01136d6 | 1954 | sv = lv; |
5f05dabc | 1955 | } |
a0d0e21e | 1956 | |
dc09a129 | 1957 | oldsv = *itersvp; |
d01136d6 | 1958 | *itersvp = sv; |
dc09a129 DM |
1959 | SvREFCNT_dec(oldsv); |
1960 | ||
a0d0e21e LW |
1961 | RETPUSHYES; |
1962 | } | |
1963 | ||
ef07e810 DM |
1964 | /* |
1965 | A description of how taint works in pattern matching and substitution. | |
1966 | ||
0ab462a6 DM |
1967 | While the pattern is being assembled/concatenated and them compiled, |
1968 | PL_tainted will get set if any component of the pattern is tainted, e.g. | |
1969 | /.*$tainted/. At the end of pattern compilation, the RXf_TAINTED flag | |
1970 | is set on the pattern if PL_tainted is set. | |
ef07e810 | 1971 | |
0ab462a6 DM |
1972 | When the pattern is copied, e.g. $r = qr/..../, the SV holding the ref to |
1973 | the pattern is marked as tainted. This means that subsequent usage, such | |
1974 | as /x$r/, will set PL_tainted, and thus RXf_TAINTED, on the new pattern too. | |
ef07e810 DM |
1975 | |
1976 | During execution of a pattern, locale-variant ops such as ALNUML set the | |
1977 | local flag RF_tainted. At the end of execution, the engine sets the | |
0ab462a6 DM |
1978 | RXf_TAINTED_SEEN on the pattern if RF_tainted got set, or clears it |
1979 | otherwise. | |
ef07e810 DM |
1980 | |
1981 | In addition, RXf_TAINTED_SEEN is used post-execution by the get magic code | |
1982 | of $1 et al to indicate whether the returned value should be tainted. | |
1983 | It is the responsibility of the caller of the pattern (i.e. pp_match, | |
1984 | pp_subst etc) to set this flag for any other circumstances where $1 needs | |
1985 | to be tainted. | |
1986 | ||
1987 | The taint behaviour of pp_subst (and pp_substcont) is quite complex. | |
1988 | ||
1989 | There are three possible sources of taint | |
1990 | * the source string | |
1991 | * the pattern (both compile- and run-time, RXf_TAINTED / RXf_TAINTED_SEEN) | |
1992 | * the replacement string (or expression under /e) | |
1993 | ||
1994 | There are four destinations of taint and they are affected by the sources | |
1995 | according to the rules below: | |
1996 | ||
1997 | * the return value (not including /r): | |
1998 | tainted by the source string and pattern, but only for the | |
1999 | number-of-iterations case; boolean returns aren't tainted; | |
2000 | * the modified string (or modified copy under /r): | |
2001 | tainted by the source string, pattern, and replacement strings; | |
2002 | * $1 et al: | |
2003 | tainted by the pattern, and under 'use re "taint"', by the source | |
2004 | string too; | |
2005 | * PL_taint - i.e. whether subsequent code (e.g. in a /e block) is tainted: | |
2006 | should always be unset before executing subsequent code. | |
2007 | ||
2008 | The overall action of pp_subst is: | |
2009 | ||
2010 | * at the start, set bits in rxtainted indicating the taint status of | |
2011 | the various sources. | |
2012 | ||
2013 | * After each pattern execution, update the SUBST_TAINT_PAT bit in | |
2014 | rxtainted if RXf_TAINTED_SEEN has been set, to indicate that the | |
2015 | pattern has subsequently become tainted via locale ops. | |
2016 | ||
2017 | * If control is being passed to pp_substcont to execute a /e block, | |
2018 | save rxtainted in the CXt_SUBST block, for future use by | |
2019 | pp_substcont. | |
2020 | ||
2021 | * Whenever control is being returned to perl code (either by falling | |
2022 | off the "end" of pp_subst/pp_substcont, or by entering a /e block), | |
2023 | use the flag bits in rxtainted to make all the appropriate types of | |
0ab462a6 DM |
2024 | destination taint visible; e.g. set RXf_TAINTED_SEEN so that $1 |
2025 | et al will appear tainted. | |
ef07e810 DM |
2026 | |
2027 | pp_match is just a simpler version of the above. | |
2028 | ||
2029 | */ | |
2030 | ||
a0d0e21e LW |
2031 | PP(pp_subst) |
2032 | { | |
97aff369 | 2033 | dVAR; dSP; dTARG; |
a0d0e21e LW |
2034 | register PMOP *pm = cPMOP; |
2035 | PMOP *rpm = pm; | |
a0d0e21e LW |
2036 | register char *s; |
2037 | char *strend; | |
2038 | register char *m; | |
5c144d81 | 2039 | const char *c; |
a0d0e21e LW |
2040 | register char *d; |
2041 | STRLEN clen; | |
2042 | I32 iters = 0; | |
2043 | I32 maxiters; | |
2044 | register I32 i; | |
2045 | bool once; | |
ef07e810 DM |
2046 | U8 rxtainted = 0; /* holds various SUBST_TAINT_* flag bits. |
2047 | See "how taint works" above */ | |
a0d0e21e | 2048 | char *orig; |
1ed74d04 | 2049 | U8 r_flags; |
aaa362c4 | 2050 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
2051 | STRLEN len; |
2052 | int force_on_match = 0; | |
0bcc34c2 | 2053 | const I32 oldsave = PL_savestack_ix; |
792b2c16 | 2054 | STRLEN slen; |
f272994b | 2055 | bool doutf8 = FALSE; |
f8c7b90f | 2056 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2057 | bool is_cow; |
2058 | #endif | |
a0714e2c | 2059 | SV *nsv = NULL; |
b770e143 NC |
2060 | /* known replacement string? */ |
2061 | register SV *dstr = (pm->op_pmflags & PMf_CONST) ? POPs : NULL; | |
a0d0e21e | 2062 | |
f410a211 NC |
2063 | PERL_ASYNC_CHECK(); |
2064 | ||
533c011a | 2065 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 2066 | TARG = POPs; |
59f00321 RGS |
2067 | else if (PL_op->op_private & OPpTARGET_MY) |
2068 | GETTARGET; | |
a0d0e21e | 2069 | else { |
54b9620d | 2070 | TARG = DEFSV; |
a0d0e21e | 2071 | EXTEND(SP,1); |
1c846c1f | 2072 | } |
d9f424b2 | 2073 | |
f8c7b90f | 2074 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2075 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, |
2076 | because they make integers such as 256 "false". */ | |
2077 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
2078 | #else | |
765f542d NC |
2079 | if (SvIsCOW(TARG)) |
2080 | sv_force_normal_flags(TARG,0); | |
ed252734 | 2081 | #endif |
8ca8a454 | 2082 | if (!(rpm->op_pmflags & PMf_NONDESTRUCT) |
f8c7b90f | 2083 | #ifdef PERL_OLD_COPY_ON_WRITE |
8ca8a454 | 2084 | && !is_cow |
ed252734 | 2085 | #endif |
8ca8a454 NC |
2086 | && (SvREADONLY(TARG) |
2087 | || ( ((SvTYPE(TARG) == SVt_PVGV && isGV_with_GP(TARG)) | |
2088 | || SvTYPE(TARG) > SVt_PVLV) | |
2089 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) | |
6ad8f254 | 2090 | Perl_croak_no_modify(aTHX); |
8ec5e241 NIS |
2091 | PUTBACK; |
2092 | ||
3e462cdc | 2093 | setup_match: |
d5263905 | 2094 | s = SvPV_mutable(TARG, len); |
68dc0745 | 2095 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 2096 | force_on_match = 1; |
20be6587 DM |
2097 | |
2098 | /* only replace once? */ | |
2099 | once = !(rpm->op_pmflags & PMf_GLOBAL); | |
2100 | ||
ef07e810 | 2101 | /* See "how taint works" above */ |
20be6587 DM |
2102 | if (PL_tainting) { |
2103 | rxtainted = ( | |
2104 | (SvTAINTED(TARG) ? SUBST_TAINT_STR : 0) | |
2105 | | ((RX_EXTFLAGS(rx) & RXf_TAINTED) ? SUBST_TAINT_PAT : 0) | |
2106 | | ((pm->op_pmflags & PMf_RETAINT) ? SUBST_TAINT_RETAINT : 0) | |
2107 | | ((once && !(rpm->op_pmflags & PMf_NONDESTRUCT)) | |
2108 | ? SUBST_TAINT_BOOLRET : 0)); | |
2109 | TAINT_NOT; | |
2110 | } | |
a12c0f56 | 2111 | |
a30b2f1f | 2112 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 2113 | |
a0d0e21e LW |
2114 | force_it: |
2115 | if (!pm || !s) | |
2269b42e | 2116 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
2117 | |
2118 | strend = s + len; | |
a30b2f1f | 2119 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
2120 | maxiters = 2 * slen + 10; /* We can match twice at each |
2121 | position, once with zero-length, | |
2122 | second time with non-zero. */ | |
a0d0e21e | 2123 | |
220fc49f | 2124 | if (!RX_PRELEN(rx) && PL_curpm) { |
3280af22 | 2125 | pm = PL_curpm; |
aaa362c4 | 2126 | rx = PM_GETRE(pm); |
a0d0e21e | 2127 | } |
07bc277f NC |
2128 | r_flags = (RX_NPARENS(rx) || SvTEMP(TARG) || PL_sawampersand |
2129 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY)) ) | |
ed252734 | 2130 | ? REXEC_COPY_STR : 0; |
f722798b | 2131 | if (SvSCREAM(TARG)) |
22e551b9 | 2132 | r_flags |= REXEC_SCREAM; |
7fba1cd6 | 2133 | |
a0d0e21e | 2134 | orig = m = s; |
07bc277f | 2135 | if (RX_EXTFLAGS(rx) & RXf_USE_INTUIT) { |
ee0b7718 | 2136 | PL_bostr = orig; |
f9f4320a | 2137 | s = CALLREG_INTUIT_START(rx, TARG, s, strend, r_flags, NULL); |
f722798b IZ |
2138 | |
2139 | if (!s) | |
df34c13a | 2140 | goto ret_no; |
f722798b | 2141 | /* How to do it in subst? */ |
07bc277f | 2142 | /* if ( (RX_EXTFLAGS(rx) & RXf_CHECK_ALL) |
1c846c1f | 2143 | && !PL_sawampersand |
07bc277f NC |
2144 | && !(RX_EXTFLAGS(rx) & RXf_KEEPCOPY) |
2145 | && ((RX_EXTFLAGS(rx) & RXf_NOSCAN) | |
2146 | || !((RX_EXTFLAGS(rx) & RXf_INTUIT_TAIL) | |
f722798b IZ |
2147 | && (r_flags & REXEC_SCREAM)))) |
2148 | goto yup; | |
2149 | */ | |
a0d0e21e | 2150 | } |
71be2cbc | 2151 | |
8b64c330 DM |
2152 | if (!CALLREGEXEC(rx, s, strend, orig, 0, TARG, NULL, |
2153 | r_flags | REXEC_CHECKED)) | |
2154 | { | |
5e79dfb9 DM |
2155 | ret_no: |
2156 | SPAGAIN; | |
2157 | PUSHs(rpm->op_pmflags & PMf_NONDESTRUCT ? TARG : &PL_sv_no); | |
2158 | LEAVE_SCOPE(oldsave); | |
2159 | RETURN; | |
2160 | } | |
2161 | ||
71be2cbc | 2162 | /* known replacement string? */ |
f272994b | 2163 | if (dstr) { |
20be6587 DM |
2164 | if (SvTAINTED(dstr)) |
2165 | rxtainted |= SUBST_TAINT_REPL; | |
3e462cdc KW |
2166 | |
2167 | /* Upgrade the source if the replacement is utf8 but the source is not, | |
2168 | * but only if it matched; see | |
2169 | * http://www.nntp.perl.org/group/perl.perl5.porters/2010/04/msg158809.html | |
2170 | */ | |
5e79dfb9 | 2171 | if (DO_UTF8(dstr) && ! DO_UTF8(TARG)) { |
c95ca9b8 DM |
2172 | char * const orig_pvx = SvPVX(TARG); |
2173 | const STRLEN new_len = sv_utf8_upgrade_nomg(TARG); | |
3e462cdc KW |
2174 | |
2175 | /* If the lengths are the same, the pattern contains only | |
2176 | * invariants, can keep going; otherwise, various internal markers | |
2177 | * could be off, so redo */ | |
c95ca9b8 | 2178 | if (new_len != len || orig_pvx != SvPVX(TARG)) { |
3e462cdc KW |
2179 | goto setup_match; |
2180 | } | |
2181 | } | |
2182 | ||
8514a05a JH |
2183 | /* replacement needing upgrading? */ |
2184 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 2185 | nsv = sv_newmortal(); |
4a176938 | 2186 | SvSetSV(nsv, dstr); |
8514a05a JH |
2187 | if (PL_encoding) |
2188 | sv_recode_to_utf8(nsv, PL_encoding); | |
2189 | else | |
2190 | sv_utf8_upgrade(nsv); | |
5c144d81 | 2191 | c = SvPV_const(nsv, clen); |
4a176938 JH |
2192 | doutf8 = TRUE; |
2193 | } | |
2194 | else { | |
5c144d81 | 2195 | c = SvPV_const(dstr, clen); |
4a176938 | 2196 | doutf8 = DO_UTF8(dstr); |
8514a05a | 2197 | } |
f272994b A |
2198 | } |
2199 | else { | |
6136c704 | 2200 | c = NULL; |
f272994b A |
2201 | doutf8 = FALSE; |
2202 | } | |
2203 | ||
71be2cbc | 2204 | /* can do inplace substitution? */ |
ed252734 | 2205 | if (c |
f8c7b90f | 2206 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2207 | && !is_cow |
2208 | #endif | |
07bc277f NC |
2209 | && (I32)clen <= RX_MINLENRET(rx) && (once || !(r_flags & REXEC_COPY_STR)) |
2210 | && !(RX_EXTFLAGS(rx) & RXf_LOOKBEHIND_SEEN) | |
8ca8a454 NC |
2211 | && (!doutf8 || SvUTF8(TARG)) |
2212 | && !(rpm->op_pmflags & PMf_NONDESTRUCT)) | |
8b030b38 | 2213 | { |
ec911639 | 2214 | |
f8c7b90f | 2215 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2216 | if (SvIsCOW(TARG)) { |
2217 | assert (!force_on_match); | |
2218 | goto have_a_cow; | |
2219 | } | |
2220 | #endif | |
71be2cbc | 2221 | if (force_on_match) { |
2222 | force_on_match = 0; | |
2223 | s = SvPV_force(TARG, len); | |
2224 | goto force_it; | |
2225 | } | |
71be2cbc | 2226 | d = s; |
3280af22 | 2227 | PL_curpm = pm; |
71be2cbc | 2228 | SvSCREAM_off(TARG); /* disable possible screamer */ |
2229 | if (once) { | |
20be6587 DM |
2230 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
2231 | rxtainted |= SUBST_TAINT_PAT; | |
07bc277f NC |
2232 | m = orig + RX_OFFS(rx)[0].start; |
2233 | d = orig + RX_OFFS(rx)[0].end; | |
71be2cbc | 2234 | s = orig; |
2235 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2236 | if (clen) { | |
2237 | Copy(c, m, clen, char); | |
2238 | m += clen; | |
a0d0e21e | 2239 | } |
71be2cbc | 2240 | i = strend - d; |
2241 | if (i > 0) { | |
2242 | Move(d, m, i, char); | |
2243 | m += i; | |
a0d0e21e | 2244 | } |
71be2cbc | 2245 | *m = '\0'; |
2246 | SvCUR_set(TARG, m - s); | |
2247 | } | |
155aba94 | 2248 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc | 2249 | d -= clen; |
2250 | m = d; | |
0d3c21b0 | 2251 | Move(s, d - i, i, char); |
71be2cbc | 2252 | sv_chop(TARG, d-i); |
71be2cbc | 2253 | if (clen) |
2254 | Copy(c, m, clen, char); | |
2255 | } | |
2256 | else if (clen) { | |
2257 | d -= clen; | |
2258 | sv_chop(TARG, d); | |
2259 | Copy(c, d, clen, char); | |
2260 | } | |
2261 | else { | |
2262 | sv_chop(TARG, d); | |
2263 | } | |
8ec5e241 | 2264 | SPAGAIN; |
8ca8a454 | 2265 | PUSHs(&PL_sv_yes); |
71be2cbc | 2266 | } |
2267 | else { | |
71be2cbc | 2268 | do { |
2269 | if (iters++ > maxiters) | |
cea2e8a9 | 2270 | DIE(aTHX_ "Substitution loop"); |
20be6587 DM |
2271 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
2272 | rxtainted |= SUBST_TAINT_PAT; | |
07bc277f | 2273 | m = RX_OFFS(rx)[0].start + orig; |
155aba94 | 2274 | if ((i = m - s)) { |
71be2cbc | 2275 | if (s != d) |
2276 | Move(s, d, i, char); | |
2277 | d += i; | |
a0d0e21e | 2278 | } |
71be2cbc | 2279 | if (clen) { |
2280 | Copy(c, d, clen, char); | |
2281 | d += clen; | |
2282 | } | |
07bc277f | 2283 | s = RX_OFFS(rx)[0].end + orig; |
f9f4320a | 2284 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
f722798b IZ |
2285 | TARG, NULL, |
2286 | /* don't match same null twice */ | |
2287 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 2288 | if (s != d) { |
2289 | i = strend - s; | |
aa07b2f6 | 2290 | SvCUR_set(TARG, d - SvPVX_const(TARG) + i); |
71be2cbc | 2291 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e | 2292 | } |
8ec5e241 | 2293 | SPAGAIN; |
8ca8a454 | 2294 | mPUSHi((I32)iters); |
a0d0e21e LW |
2295 | } |
2296 | } | |
ff6e92e8 | 2297 | else { |
a0d0e21e LW |
2298 | if (force_on_match) { |
2299 | force_on_match = 0; | |
0c1438a1 NC |
2300 | if (rpm->op_pmflags & PMf_NONDESTRUCT) { |
2301 | /* I feel that it should be possible to avoid this mortal copy | |
2302 | given that the code below copies into a new destination. | |
2303 | However, I suspect it isn't worth the complexity of | |
2304 | unravelling the C<goto force_it> for the small number of | |
2305 | cases where it would be viable to drop into the copy code. */ | |
2306 | TARG = sv_2mortal(newSVsv(TARG)); | |
2307 | } | |
a0d0e21e LW |
2308 | s = SvPV_force(TARG, len); |
2309 | goto force_it; | |
2310 | } | |
f8c7b90f | 2311 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2312 | have_a_cow: |
2313 | #endif | |
20be6587 DM |
2314 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
2315 | rxtainted |= SUBST_TAINT_PAT; | |
815dd406 | 2316 | dstr = newSVpvn_flags(m, s-m, SVs_TEMP | (DO_UTF8(TARG) ? SVf_UTF8 : 0)); |
3280af22 | 2317 | PL_curpm = pm; |
a0d0e21e | 2318 | if (!c) { |
c09156bb | 2319 | register PERL_CONTEXT *cx; |
8ec5e241 | 2320 | SPAGAIN; |
20be6587 DM |
2321 | /* note that a whole bunch of local vars are saved here for |
2322 | * use by pp_substcont: here's a list of them in case you're | |
2323 | * searching for places in this sub that uses a particular var: | |
2324 | * iters maxiters r_flags oldsave rxtainted orig dstr targ | |
2325 | * s m strend rx once */ | |
a0d0e21e | 2326 | PUSHSUBST(cx); |
20e98b0f | 2327 | RETURNOP(cPMOP->op_pmreplrootu.op_pmreplroot); |
a0d0e21e | 2328 | } |
cf93c79d | 2329 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2330 | do { |
2331 | if (iters++ > maxiters) | |
cea2e8a9 | 2332 | DIE(aTHX_ "Substitution loop"); |
20be6587 DM |
2333 | if (RX_MATCH_TAINTED(rx)) |
2334 | rxtainted |= SUBST_TAINT_PAT; | |
07bc277f | 2335 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
a0d0e21e LW |
2336 | m = s; |
2337 | s = orig; | |
07bc277f | 2338 | orig = RX_SUBBEG(rx); |
a0d0e21e LW |
2339 | s = orig + (m - s); |
2340 | strend = s + (strend - m); | |
2341 | } | |
07bc277f | 2342 | m = RX_OFFS(rx)[0].start + orig; |
db79b45b JH |
2343 | if (doutf8 && !SvUTF8(dstr)) |
2344 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); | |
2345 | else | |
2346 | sv_catpvn(dstr, s, m-s); | |
07bc277f | 2347 | s = RX_OFFS(rx)[0].end + orig; |
a0d0e21e LW |
2348 | if (clen) |
2349 | sv_catpvn(dstr, c, clen); | |
2350 | if (once) | |
2351 | break; | |
f9f4320a | 2352 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
ffc61ed2 | 2353 | TARG, NULL, r_flags)); |
db79b45b JH |
2354 | if (doutf8 && !DO_UTF8(TARG)) |
2355 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); | |
89afcb60 A |
2356 | else |
2357 | sv_catpvn(dstr, s, strend - s); | |
748a9306 | 2358 | |
8ca8a454 NC |
2359 | if (rpm->op_pmflags & PMf_NONDESTRUCT) { |
2360 | /* From here on down we're using the copy, and leaving the original | |
2361 | untouched. */ | |
2362 | TARG = dstr; | |
2363 | SPAGAIN; | |
2364 | PUSHs(dstr); | |
2365 | } else { | |
f8c7b90f | 2366 | #ifdef PERL_OLD_COPY_ON_WRITE |
8ca8a454 NC |
2367 | /* The match may make the string COW. If so, brilliant, because |
2368 | that's just saved us one malloc, copy and free - the regexp has | |
2369 | donated the old buffer, and we malloc an entirely new one, rather | |
2370 | than the regexp malloc()ing a buffer and copying our original, | |
2371 | only for us to throw it away here during the substitution. */ | |
2372 | if (SvIsCOW(TARG)) { | |
2373 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
2374 | } else | |
ed252734 | 2375 | #endif |
8ca8a454 NC |
2376 | { |
2377 | SvPV_free(TARG); | |
2378 | } | |
2379 | SvPV_set(TARG, SvPVX(dstr)); | |
2380 | SvCUR_set(TARG, SvCUR(dstr)); | |
2381 | SvLEN_set(TARG, SvLEN(dstr)); | |
2382 | doutf8 |= DO_UTF8(dstr); | |
2383 | SvPV_set(dstr, NULL); | |
748a9306 | 2384 | |
8ca8a454 | 2385 | SPAGAIN; |
4f4d7508 | 2386 | mPUSHi((I32)iters); |
8ca8a454 NC |
2387 | } |
2388 | } | |
2389 | ||
2390 | if (!(rpm->op_pmflags & PMf_NONDESTRUCT)) { | |
2391 | (void)SvPOK_only_UTF8(TARG); | |
2392 | if (doutf8) | |
2393 | SvUTF8_on(TARG); | |
a0d0e21e | 2394 | } |
20be6587 | 2395 | |
ef07e810 | 2396 | /* See "how taint works" above */ |
20be6587 DM |
2397 | if (PL_tainting) { |
2398 | if ((rxtainted & SUBST_TAINT_PAT) || | |
2399 | ((rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) == | |
2400 | (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
2401 | ) | |
2402 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
2403 | ||
2404 | if (!(rxtainted & SUBST_TAINT_BOOLRET) | |
2405 | && (rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT)) | |
2406 | ) | |
2407 | SvTAINTED_on(TOPs); /* taint return value */ | |
2408 | else | |
2409 | SvTAINTED_off(TOPs); /* may have got tainted earlier */ | |
2410 | ||
2411 | /* needed for mg_set below */ | |
2412 | PL_tainted = | |
2413 | cBOOL(rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL)); | |
2414 | SvTAINT(TARG); | |
2415 | } | |
2416 | SvSETMAGIC(TARG); /* PL_tainted must be correctly set for this mg_set */ | |
2417 | TAINT_NOT; | |
f1a76097 DM |
2418 | LEAVE_SCOPE(oldsave); |
2419 | RETURN; | |
a0d0e21e LW |
2420 | } |
2421 | ||
2422 | PP(pp_grepwhile) | |
2423 | { | |
27da23d5 | 2424 | dVAR; dSP; |
a0d0e21e LW |
2425 | |
2426 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2427 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2428 | ++*PL_markstack_ptr; | |
b2a2a901 | 2429 | FREETMPS; |
d343c3ef | 2430 | LEAVE_with_name("grep_item"); /* exit inner scope */ |
a0d0e21e LW |
2431 | |
2432 | /* All done yet? */ | |
3280af22 | 2433 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2434 | I32 items; |
c4420975 | 2435 | const I32 gimme = GIMME_V; |
a0d0e21e | 2436 | |
d343c3ef | 2437 | LEAVE_with_name("grep"); /* exit outer scope */ |
a0d0e21e | 2438 | (void)POPMARK; /* pop src */ |
3280af22 | 2439 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2440 | (void)POPMARK; /* pop dst */ |
3280af22 | 2441 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2442 | if (gimme == G_SCALAR) { |
7cc47870 | 2443 | if (PL_op->op_private & OPpGREP_LEX) { |
c4420975 | 2444 | SV* const sv = sv_newmortal(); |
7cc47870 RGS |
2445 | sv_setiv(sv, items); |
2446 | PUSHs(sv); | |
2447 | } | |
2448 | else { | |
2449 | dTARGET; | |
2450 | XPUSHi(items); | |
2451 | } | |
a0d0e21e | 2452 | } |
54310121 | 2453 | else if (gimme == G_ARRAY) |
2454 | SP += items; | |
a0d0e21e LW |
2455 | RETURN; |
2456 | } | |
2457 | else { | |
2458 | SV *src; | |
2459 | ||
d343c3ef | 2460 | ENTER_with_name("grep_item"); /* enter inner scope */ |
1d7c1841 | 2461 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2462 | |
3280af22 | 2463 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2464 | SvTEMP_off(src); |
59f00321 RGS |
2465 | if (PL_op->op_private & OPpGREP_LEX) |
2466 | PAD_SVl(PL_op->op_targ) = src; | |
2467 | else | |
414bf5ae | 2468 | DEFSV_set(src); |
a0d0e21e LW |
2469 | |
2470 | RETURNOP(cLOGOP->op_other); | |
2471 | } | |
2472 | } | |
2473 | ||
2474 | PP(pp_leavesub) | |
2475 | { | |
27da23d5 | 2476 | dVAR; dSP; |
a0d0e21e LW |
2477 | SV **mark; |
2478 | SV **newsp; | |
2479 | PMOP *newpm; | |
2480 | I32 gimme; | |
c09156bb | 2481 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2482 | SV *sv; |
a0d0e21e | 2483 | |
9850bf21 RH |
2484 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2485 | return 0; | |
2486 | ||
a0d0e21e | 2487 | POPBLOCK(cx,newpm); |
5dd42e15 | 2488 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2489 | |
a1f49e72 | 2490 | TAINT_NOT; |
a0d0e21e LW |
2491 | if (gimme == G_SCALAR) { |
2492 | MARK = newsp + 1; | |
a29cdaf0 | 2493 | if (MARK <= SP) { |
a8bba7fa | 2494 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
3ed94dc0 | 2495 | if (SvTEMP(TOPs) && SvREFCNT(TOPs) == 1) { |
a29cdaf0 IZ |
2496 | *MARK = SvREFCNT_inc(TOPs); |
2497 | FREETMPS; | |
2498 | sv_2mortal(*MARK); | |
cd06dffe GS |
2499 | } |
2500 | else { | |
959e3673 | 2501 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2502 | FREETMPS; |
959e3673 GS |
2503 | *MARK = sv_mortalcopy(sv); |
2504 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2505 | } |
cd06dffe | 2506 | } |
3ed94dc0 | 2507 | else if (SvTEMP(TOPs) && SvREFCNT(TOPs) == 1) { |
767eda44 | 2508 | *MARK = TOPs; |
767eda44 | 2509 | } |
cd06dffe | 2510 | else |
767eda44 | 2511 | *MARK = sv_mortalcopy(TOPs); |
cd06dffe GS |
2512 | } |
2513 | else { | |
f86702cc | 2514 | MEXTEND(MARK, 0); |
3280af22 | 2515 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2516 | } |
2517 | SP = MARK; | |
2518 | } | |
54310121 | 2519 | else if (gimme == G_ARRAY) { |
f86702cc | 2520 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
3ed94dc0 | 2521 | if (!SvTEMP(*MARK) || SvREFCNT(*MARK) != 1) { |
f86702cc | 2522 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2523 | TAINT_NOT; /* Each item is independent */ |
2524 | } | |
f86702cc | 2525 | } |
a0d0e21e | 2526 | } |
f86702cc | 2527 | PUTBACK; |
1c846c1f | 2528 | |
a57c6685 | 2529 | LEAVE; |
5dd42e15 | 2530 | cxstack_ix--; |
b0d9ce38 | 2531 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2532 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2533 | |
b0d9ce38 | 2534 | LEAVESUB(sv); |
f39bc417 | 2535 | return cx->blk_sub.retop; |
a0d0e21e LW |
2536 | } |
2537 | ||
2538 | PP(pp_entersub) | |
2539 | { | |
27da23d5 | 2540 | dVAR; dSP; dPOPss; |
a0d0e21e | 2541 | GV *gv; |
a0d0e21e | 2542 | register CV *cv; |
c09156bb | 2543 | register PERL_CONTEXT *cx; |
5d94fbed | 2544 | I32 gimme; |
a9c4fd4e | 2545 | const bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2546 | |
2547 | if (!sv) | |
cea2e8a9 | 2548 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e | 2549 | switch (SvTYPE(sv)) { |
f1025168 NC |
2550 | /* This is overwhelming the most common case: */ |
2551 | case SVt_PVGV: | |
6e592b3a BM |
2552 | if (!isGV_with_GP(sv)) |
2553 | DIE(aTHX_ "Not a CODE reference"); | |
13be902c | 2554 | we_have_a_glob: |
159b6efe | 2555 | if (!(cv = GvCVu((const GV *)sv))) { |
f730a42d | 2556 | HV *stash; |
f2c0649b | 2557 | cv = sv_2cv(sv, &stash, &gv, 0); |
f730a42d | 2558 | } |
f1025168 | 2559 | if (!cv) { |
a57c6685 | 2560 | ENTER; |
f1025168 NC |
2561 | SAVETMPS; |
2562 | goto try_autoload; | |
2563 | } | |
2564 | break; | |
13be902c FC |
2565 | case SVt_PVLV: |
2566 | if(isGV_with_GP(sv)) goto we_have_a_glob; | |
2567 | /*FALLTHROUGH*/ | |
a0d0e21e | 2568 | default: |
7c75014e DM |
2569 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
2570 | if (hasargs) | |
2571 | SP = PL_stack_base + POPMARK; | |
4d198de3 DM |
2572 | else |
2573 | (void)POPMARK; | |
7c75014e DM |
2574 | RETURN; |
2575 | } | |
2576 | SvGETMAGIC(sv); | |
2577 | if (SvROK(sv)) { | |
93d7320b DM |
2578 | if (SvAMAGIC(sv)) { |
2579 | sv = amagic_deref_call(sv, to_cv_amg); | |
2580 | /* Don't SPAGAIN here. */ | |
2581 | } | |
7c75014e DM |
2582 | } |
2583 | else { | |
a9c4fd4e | 2584 | const char *sym; |
780a5241 | 2585 | STRLEN len; |
7c75014e | 2586 | sym = SvPV_nomg_const(sv, len); |
15ff848f | 2587 | if (!sym) |
cea2e8a9 | 2588 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2589 | if (PL_op->op_private & HINT_STRICT_REFS) |
973a7615 | 2590 | DIE(aTHX_ "Can't use string (\"%.32s\"%s) as a subroutine ref while \"strict refs\" in use", sym, len>32 ? "..." : ""); |
780a5241 | 2591 | cv = get_cvn_flags(sym, len, GV_ADD|SvUTF8(sv)); |
a0d0e21e LW |
2592 | break; |
2593 | } | |
ea726b52 | 2594 | cv = MUTABLE_CV(SvRV(sv)); |
a0d0e21e LW |
2595 | if (SvTYPE(cv) == SVt_PVCV) |
2596 | break; | |
2597 | /* FALL THROUGH */ | |
2598 | case SVt_PVHV: | |
2599 | case SVt_PVAV: | |
cea2e8a9 | 2600 | DIE(aTHX_ "Not a CODE reference"); |
f1025168 | 2601 | /* This is the second most common case: */ |
a0d0e21e | 2602 | case SVt_PVCV: |
ea726b52 | 2603 | cv = MUTABLE_CV(sv); |
a0d0e21e | 2604 | break; |
a0d0e21e LW |
2605 | } |
2606 | ||
a57c6685 | 2607 | ENTER; |
a0d0e21e LW |
2608 | SAVETMPS; |
2609 | ||
2610 | retry: | |
541ed3a9 FC |
2611 | if (CvCLONE(cv) && ! CvCLONED(cv)) |
2612 | DIE(aTHX_ "Closure prototype called"); | |
a0d0e21e | 2613 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
2f349aa0 NC |
2614 | GV* autogv; |
2615 | SV* sub_name; | |
2616 | ||
2617 | /* anonymous or undef'd function leaves us no recourse */ | |
2618 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
2619 | DIE(aTHX_ "Undefined subroutine called"); | |
2620 | ||
2621 | /* autoloaded stub? */ | |
2622 | if (cv != GvCV(gv)) { | |
2623 | cv = GvCV(gv); | |
2624 | } | |
2625 | /* should call AUTOLOAD now? */ | |
2626 | else { | |
7e623da3 | 2627 | try_autoload: |
2f349aa0 | 2628 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
7e623da3 | 2629 | FALSE))) |
2f349aa0 NC |
2630 | { |
2631 | cv = GvCV(autogv); | |
2632 | } | |
2633 | /* sorry */ | |
2634 | else { | |
2635 | sub_name = sv_newmortal(); | |
6136c704 | 2636 | gv_efullname3(sub_name, gv, NULL); |
be2597df | 2637 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", SVfARG(sub_name)); |
2f349aa0 NC |
2638 | } |
2639 | } | |
2640 | if (!cv) | |
2641 | DIE(aTHX_ "Not a CODE reference"); | |
2642 | goto retry; | |
a0d0e21e LW |
2643 | } |
2644 | ||
54310121 | 2645 | gimme = GIMME_V; |
67caa1fe | 2646 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
005a8a35 | 2647 | Perl_get_db_sub(aTHX_ &sv, cv); |
a9ef256d NC |
2648 | if (CvISXSUB(cv)) |
2649 | PL_curcopdb = PL_curcop; | |
1ad62f64 BR |
2650 | if (CvLVALUE(cv)) { |
2651 | /* check for lsub that handles lvalue subroutines */ | |
ae5c1e95 | 2652 | cv = GvCV(gv_HVadd(gv_fetchpvs("DB::lsub", GV_ADDMULTI, SVt_PVHV))); |
1ad62f64 BR |
2653 | /* if lsub not found then fall back to DB::sub */ |
2654 | if (!cv) cv = GvCV(PL_DBsub); | |
2655 | } else { | |
2656 | cv = GvCV(PL_DBsub); | |
2657 | } | |
a9ef256d | 2658 | |
ccafdc96 RGS |
2659 | if (!cv || (!CvXSUB(cv) && !CvSTART(cv))) |
2660 | DIE(aTHX_ "No DB::sub routine defined"); | |
67caa1fe | 2661 | } |
a0d0e21e | 2662 | |
aed2304a | 2663 | if (!(CvISXSUB(cv))) { |
f1025168 | 2664 | /* This path taken at least 75% of the time */ |
a0d0e21e LW |
2665 | dMARK; |
2666 | register I32 items = SP - MARK; | |
0bcc34c2 | 2667 | AV* const padlist = CvPADLIST(cv); |
a0d0e21e LW |
2668 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2669 | PUSHSUB(cx); | |
f39bc417 | 2670 | cx->blk_sub.retop = PL_op->op_next; |
a0d0e21e | 2671 | CvDEPTH(cv)++; |
6b35e009 GS |
2672 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2673 | * that eval'' ops within this sub know the correct lexical space. | |
a3985cdc DM |
2674 | * Owing the speed considerations, we choose instead to search for |
2675 | * the cv using find_runcv() when calling doeval(). | |
6b35e009 | 2676 | */ |
3a76ca88 RGS |
2677 | if (CvDEPTH(cv) >= 2) { |
2678 | PERL_STACK_OVERFLOW_CHECK(); | |
2679 | pad_push(padlist, CvDEPTH(cv)); | |
a0d0e21e | 2680 | } |
3a76ca88 RGS |
2681 | SAVECOMPPAD(); |
2682 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); | |
2683 | if (hasargs) { | |
10533ace | 2684 | AV *const av = MUTABLE_AV(PAD_SVl(0)); |
221373f0 GS |
2685 | if (AvREAL(av)) { |
2686 | /* @_ is normally not REAL--this should only ever | |
2687 | * happen when DB::sub() calls things that modify @_ */ | |
2688 | av_clear(av); | |
2689 | AvREAL_off(av); | |
2690 | AvREIFY_on(av); | |
2691 | } | |
3280af22 | 2692 | cx->blk_sub.savearray = GvAV(PL_defgv); |
502c6561 | 2693 | GvAV(PL_defgv) = MUTABLE_AV(SvREFCNT_inc_simple(av)); |
dd2155a4 | 2694 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2695 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2696 | ++MARK; |
2697 | ||
2698 | if (items > AvMAX(av) + 1) { | |
504618e9 | 2699 | SV **ary = AvALLOC(av); |
a0d0e21e LW |
2700 | if (AvARRAY(av) != ary) { |
2701 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
9c6bc640 | 2702 | AvARRAY(av) = ary; |
a0d0e21e LW |
2703 | } |
2704 | if (items > AvMAX(av) + 1) { | |
2705 | AvMAX(av) = items - 1; | |
2706 | Renew(ary,items,SV*); | |
2707 | AvALLOC(av) = ary; | |
9c6bc640 | 2708 | AvARRAY(av) = ary; |
a0d0e21e LW |
2709 | } |
2710 | } | |
2711 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2712 | AvFILLp(av) = items - 1; |
1c846c1f | 2713 | |
a0d0e21e LW |
2714 | while (items--) { |
2715 | if (*MARK) | |
2716 | SvTEMP_off(*MARK); | |
2717 | MARK++; | |
2718 | } | |
2719 | } | |
4a925ff6 GS |
2720 | /* warning must come *after* we fully set up the context |
2721 | * stuff so that __WARN__ handlers can safely dounwind() | |
2722 | * if they want to | |
2723 | */ | |
2b9dff67 | 2724 | if (CvDEPTH(cv) == PERL_SUB_DEPTH_WARN && ckWARN(WARN_RECURSION) |
4a925ff6 GS |
2725 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) |
2726 | sub_crush_depth(cv); | |
a0d0e21e LW |
2727 | RETURNOP(CvSTART(cv)); |
2728 | } | |
f1025168 | 2729 | else { |
3a76ca88 | 2730 | I32 markix = TOPMARK; |
f1025168 | 2731 | |
3a76ca88 | 2732 | PUTBACK; |
f1025168 | 2733 | |
3a76ca88 RGS |
2734 | if (!hasargs) { |
2735 | /* Need to copy @_ to stack. Alternative may be to | |
2736 | * switch stack to @_, and copy return values | |
2737 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
2738 | AV * const av = GvAV(PL_defgv); | |
2739 | const I32 items = AvFILLp(av) + 1; /* @_ is not tieable */ | |
2740 | ||
2741 | if (items) { | |
2742 | /* Mark is at the end of the stack. */ | |
2743 | EXTEND(SP, items); | |
2744 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2745 | SP += items; | |
2746 | PUTBACK ; | |
2747 | } | |
2748 | } | |
2749 | /* We assume first XSUB in &DB::sub is the called one. */ | |
2750 | if (PL_curcopdb) { | |
2751 | SAVEVPTR(PL_curcop); | |
2752 | PL_curcop = PL_curcopdb; | |
2753 | PL_curcopdb = NULL; | |
2754 | } | |
2755 | /* Do we need to open block here? XXXX */ | |
72df79cf GF |
2756 | |
2757 | /* CvXSUB(cv) must not be NULL because newXS() refuses NULL xsub address */ | |
2758 | assert(CvXSUB(cv)); | |
16c91539 | 2759 | CvXSUB(cv)(aTHX_ cv); |
3a76ca88 RGS |
2760 | |
2761 | /* Enforce some sanity in scalar context. */ | |
2762 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { | |
2763 | if (markix > PL_stack_sp - PL_stack_base) | |
2764 | *(PL_stack_base + markix) = &PL_sv_undef; | |
2765 | else | |
2766 | *(PL_stack_base + markix) = *PL_stack_sp; | |
2767 | PL_stack_sp = PL_stack_base + markix; | |
2768 | } | |
a57c6685 | 2769 | LEAVE; |
f1025168 NC |
2770 | return NORMAL; |
2771 | } | |
a0d0e21e LW |
2772 | } |
2773 | ||
44a8e56a | 2774 | void |
864dbfa3 | 2775 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2776 | { |
7918f24d NC |
2777 | PERL_ARGS_ASSERT_SUB_CRUSH_DEPTH; |
2778 | ||
44a8e56a | 2779 | if (CvANON(cv)) |
9014280d | 2780 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 2781 | else { |
aec46f14 | 2782 | SV* const tmpstr = sv_newmortal(); |
6136c704 | 2783 | gv_efullname3(tmpstr, CvGV(cv), NULL); |
35c1215d | 2784 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
be2597df | 2785 | SVfARG(tmpstr)); |
44a8e56a | 2786 | } |
2787 | } | |
2788 | ||
a0d0e21e LW |
2789 | PP(pp_aelem) |
2790 | { | |
97aff369 | 2791 | dVAR; dSP; |
a0d0e21e | 2792 | SV** svp; |
a3b680e6 | 2793 | SV* const elemsv = POPs; |
d804643f | 2794 | IV elem = SvIV(elemsv); |
502c6561 | 2795 | AV *const av = MUTABLE_AV(POPs); |
e1ec3a88 AL |
2796 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
2797 | const U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > av_len(av)); | |
4ad10a0b VP |
2798 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
2799 | bool preeminent = TRUE; | |
be6c24e0 | 2800 | SV *sv; |
a0d0e21e | 2801 | |
e35c1634 | 2802 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
95b63a38 JH |
2803 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
2804 | "Use of reference \"%"SVf"\" as array index", | |
be2597df | 2805 | SVfARG(elemsv)); |
a0d0e21e LW |
2806 | if (SvTYPE(av) != SVt_PVAV) |
2807 | RETPUSHUNDEF; | |
4ad10a0b VP |
2808 | |
2809 | if (localizing) { | |
2810 | MAGIC *mg; | |
2811 | HV *stash; | |
2812 | ||
2813 | /* If we can determine whether the element exist, | |
2814 | * Try to preserve the existenceness of a tied array | |
2815 | * element by using EXISTS and DELETE if possible. | |
2816 | * Fallback to FETCH and STORE otherwise. */ | |
2817 | if (SvCANEXISTDELETE(av)) | |
2818 | preeminent = av_exists(av, elem); | |
2819 | } | |
2820 | ||
68dc0745 | 2821 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2822 | if (lval) { |
2b573ace | 2823 | #ifdef PERL_MALLOC_WRAP |
2b573ace | 2824 | if (SvUOK(elemsv)) { |
a9c4fd4e | 2825 | const UV uv = SvUV(elemsv); |
2b573ace JH |
2826 | elem = uv > IV_MAX ? IV_MAX : uv; |
2827 | } | |
2828 | else if (SvNOK(elemsv)) | |
2829 | elem = (IV)SvNV(elemsv); | |
a3b680e6 AL |
2830 | if (elem > 0) { |
2831 | static const char oom_array_extend[] = | |
2832 | "Out of memory during array extend"; /* Duplicated in av.c */ | |
2b573ace | 2833 | MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend); |
a3b680e6 | 2834 | } |
2b573ace | 2835 | #endif |
3280af22 | 2836 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 2837 | SV* lv; |
2838 | if (!defer) | |
cea2e8a9 | 2839 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 2840 | lv = sv_newmortal(); |
2841 | sv_upgrade(lv, SVt_PVLV); | |
2842 | LvTYPE(lv) = 'y'; | |
a0714e2c | 2843 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); |
b37c2d43 | 2844 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
68dc0745 | 2845 | LvTARGOFF(lv) = elem; |
2846 | LvTARGLEN(lv) = 1; | |
2847 | PUSHs(lv); | |
2848 | RETURN; | |
2849 | } | |
4ad10a0b VP |
2850 | if (localizing) { |
2851 | if (preeminent) | |
2852 | save_aelem(av, elem, svp); | |
2853 | else | |
2854 | SAVEADELETE(av, elem); | |
2855 | } | |
9026059d GG |
2856 | else if (PL_op->op_private & OPpDEREF) { |
2857 | PUSHs(vivify_ref(*svp, PL_op->op_private & OPpDEREF)); | |
2858 | RETURN; | |
2859 | } | |
a0d0e21e | 2860 | } |
3280af22 | 2861 | sv = (svp ? *svp : &PL_sv_undef); |
39cf747a | 2862 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 2863 | mg_get(sv); |
be6c24e0 | 2864 | PUSHs(sv); |
a0d0e21e LW |
2865 | RETURN; |
2866 | } | |
2867 | ||
9026059d | 2868 | SV* |
864dbfa3 | 2869 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 | 2870 | { |
7918f24d NC |
2871 | PERL_ARGS_ASSERT_VIVIFY_REF; |
2872 | ||
5b295bef | 2873 | SvGETMAGIC(sv); |
02a9e968 CS |
2874 | if (!SvOK(sv)) { |
2875 | if (SvREADONLY(sv)) | |
6ad8f254 | 2876 | Perl_croak_no_modify(aTHX); |
43230e26 | 2877 | prepare_SV_for_RV(sv); |
68dc0745 | 2878 | switch (to_what) { |
5f05dabc | 2879 | case OPpDEREF_SV: |
561b68a9 | 2880 | SvRV_set(sv, newSV(0)); |
5f05dabc | 2881 | break; |
2882 | case OPpDEREF_AV: | |
ad64d0ec | 2883 | SvRV_set(sv, MUTABLE_SV(newAV())); |
5f05dabc | 2884 | break; |
2885 | case OPpDEREF_HV: | |
ad64d0ec | 2886 | SvRV_set(sv, MUTABLE_SV(newHV())); |
5f05dabc | 2887 | break; |
2888 | } | |
02a9e968 CS |
2889 | SvROK_on(sv); |
2890 | SvSETMAGIC(sv); | |
2891 | } | |
9026059d GG |
2892 | if (SvGMAGICAL(sv)) { |
2893 | /* copy the sv without magic to prevent magic from being | |
2894 | executed twice */ | |
2895 | SV* msv = sv_newmortal(); | |
2896 | sv_setsv_nomg(msv, sv); | |
2897 | return msv; | |
2898 | } | |
2899 | return sv; | |
02a9e968 CS |
2900 | } |
2901 | ||
a0d0e21e LW |
2902 | PP(pp_method) |
2903 | { | |
97aff369 | 2904 | dVAR; dSP; |
890ce7af | 2905 | SV* const sv = TOPs; |
f5d5a27c CS |
2906 | |
2907 | if (SvROK(sv)) { | |
890ce7af | 2908 | SV* const rsv = SvRV(sv); |
f5d5a27c CS |
2909 | if (SvTYPE(rsv) == SVt_PVCV) { |
2910 | SETs(rsv); | |
2911 | RETURN; | |
2912 | } | |
2913 | } | |
2914 | ||
4608196e | 2915 | SETs(method_common(sv, NULL)); |
f5d5a27c CS |
2916 | RETURN; |
2917 | } | |
2918 | ||
2919 | PP(pp_method_named) | |
2920 | { | |
97aff369 | 2921 | dVAR; dSP; |
890ce7af | 2922 | SV* const sv = cSVOP_sv; |
c158a4fd | 2923 | U32 hash = SvSHARED_HASH(sv); |
f5d5a27c CS |
2924 | |
2925 | XPUSHs(method_common(sv, &hash)); | |
2926 | RETURN; | |
2927 | } | |
2928 | ||
2929 | STATIC SV * | |
2930 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
2931 | { | |
97aff369 | 2932 | dVAR; |
a0d0e21e LW |
2933 | SV* ob; |
2934 | GV* gv; | |
56304f61 | 2935 | HV* stash; |
6136c704 | 2936 | const char* packname = NULL; |
a0714e2c | 2937 | SV *packsv = NULL; |
ac91690f | 2938 | STRLEN packlen; |
46c461b5 | 2939 | SV * const sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c | 2940 | |
7918f24d NC |
2941 | PERL_ARGS_ASSERT_METHOD_COMMON; |
2942 | ||
4f1b7578 | 2943 | if (!sv) |
a214957f VP |
2944 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" on an undefined value", |
2945 | SVfARG(meth)); | |
4f1b7578 | 2946 | |
5b295bef | 2947 | SvGETMAGIC(sv); |
a0d0e21e | 2948 | if (SvROK(sv)) |
ad64d0ec | 2949 | ob = MUTABLE_SV(SvRV(sv)); |
a0d0e21e LW |
2950 | else { |
2951 | GV* iogv; | |
da6b625f | 2952 | bool packname_is_utf8 = FALSE; |
a0d0e21e | 2953 | |
af09ea45 | 2954 | /* this isn't a reference */ |
da6b625f FC |
2955 | if(SvOK(sv) && (packname = SvPV_nomg_const(sv, packlen))) { |
2956 | const HE* const he = | |
2957 | (const HE *)hv_common_key_len( | |
2958 | PL_stashcache, packname, | |
2959 | packlen * -(packname_is_utf8 = !!SvUTF8(sv)), 0, NULL, 0 | |
2960 | ); | |
2961 | ||
081fc587 | 2962 | if (he) { |
5e6396ae | 2963 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
081fc587 AB |
2964 | goto fetch; |
2965 | } | |
2966 | } | |
2967 | ||
a0d0e21e | 2968 | if (!SvOK(sv) || |
05f5af9a | 2969 | !(packname) || |
da6b625f FC |
2970 | !(iogv = gv_fetchpvn_flags( |
2971 | packname, packlen, SVf_UTF8 * packname_is_utf8, SVt_PVIO | |
2972 | )) || | |
ad64d0ec | 2973 | !(ob=MUTABLE_SV(GvIO(iogv)))) |
a0d0e21e | 2974 | { |
af09ea45 | 2975 | /* this isn't the name of a filehandle either */ |
1c846c1f | 2976 | if (!packname || |
fd400ab9 | 2977 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 2978 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
2979 | : !isIDFIRST(*packname) |
2980 | )) | |
2981 | { | |
a214957f VP |
2982 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" %s", |
2983 | SVfARG(meth), | |
f5d5a27c CS |
2984 | SvOK(sv) ? "without a package or object reference" |
2985 | : "on an undefined value"); | |
834a4ddd | 2986 | } |
af09ea45 | 2987 | /* assume it's a package name */ |
da51bb9b | 2988 | stash = gv_stashpvn(packname, packlen, 0); |
0dae17bd GS |
2989 | if (!stash) |
2990 | packsv = sv; | |
081fc587 | 2991 | else { |
d4c19fe8 | 2992 | SV* const ref = newSViv(PTR2IV(stash)); |
04fe65b0 | 2993 | (void)hv_store(PL_stashcache, packname, packlen, ref, 0); |
7e8961ec | 2994 | } |
ac91690f | 2995 | goto fetch; |
a0d0e21e | 2996 | } |
af09ea45 | 2997 | /* it _is_ a filehandle name -- replace with a reference */ |
ad64d0ec | 2998 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV(MUTABLE_SV(iogv))); |
a0d0e21e LW |
2999 | } |
3000 | ||
af09ea45 | 3001 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 | 3002 | if (!ob || !(SvOBJECT(ob) |
6e592b3a BM |
3003 | || (SvTYPE(ob) == SVt_PVGV |
3004 | && isGV_with_GP(ob) | |
159b6efe | 3005 | && (ob = MUTABLE_SV(GvIO((const GV *)ob))) |
f0d43078 GS |
3006 | && SvOBJECT(ob)))) |
3007 | { | |
a214957f | 3008 | const char * const name = SvPV_nolen_const(meth); |
f5d5a27c | 3009 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
59e7186f | 3010 | (SvSCREAM(meth) && strEQ(name,"isa")) ? "DOES" : |
f5d5a27c | 3011 | name); |
f0d43078 | 3012 | } |
a0d0e21e | 3013 | |
56304f61 | 3014 | stash = SvSTASH(ob); |
a0d0e21e | 3015 | |
ac91690f | 3016 | fetch: |
af09ea45 IK |
3017 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3018 | gv_fetchmethod can cope (it seems they can) */ | |
3019 | ||
f5d5a27c CS |
3020 | /* shortcut for simple names */ |
3021 | if (hashp) { | |
b464bac0 | 3022 | const HE* const he = hv_fetch_ent(stash, meth, 0, *hashp); |
f5d5a27c | 3023 | if (he) { |
159b6efe | 3024 | gv = MUTABLE_GV(HeVAL(he)); |
f5d5a27c | 3025 | if (isGV(gv) && GvCV(gv) && |
e1a479c5 | 3026 | (!GvCVGEN(gv) || GvCVGEN(gv) |
dd69841b | 3027 | == (PL_sub_generation + HvMROMETA(stash)->cache_gen))) |
ad64d0ec | 3028 | return MUTABLE_SV(GvCV(gv)); |
f5d5a27c CS |
3029 | } |
3030 | } | |
3031 | ||
a214957f VP |
3032 | gv = gv_fetchmethod_flags(stash ? stash : MUTABLE_HV(packsv), |
3033 | SvPV_nolen_const(meth), | |
256d1bb2 | 3034 | GV_AUTOLOAD | GV_CROAK); |
9b9d0b15 | 3035 | |
256d1bb2 | 3036 | assert(gv); |
9b9d0b15 | 3037 | |
ad64d0ec | 3038 | return isGV(gv) ? MUTABLE_SV(GvCV(gv)) : MUTABLE_SV(gv); |
a0d0e21e | 3039 | } |
241d1a3b NC |
3040 | |
3041 | /* | |
3042 | * Local variables: | |
3043 | * c-indentation-style: bsd | |
3044 | * c-basic-offset: 4 | |
3045 | * indent-tabs-mode: t | |
3046 | * End: | |
3047 | * | |
37442d52 RGS |
3048 | * ex: set ts=8 sts=4 sw=4 noet: |
3049 | */ |