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); |
5d9574c1 | 64 | if (UNLIKELY(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 | ||
5d8673bc | 77 | /* This is sometimes called directly by pp_coreargs and pp_grepstart. */ |
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; |
4cc783ef DD |
88 | SV * const sv = TOPs; |
89 | SETs(TARG); | |
90 | sv_copypv(TARG, sv); | |
91 | SvSETMAGIC(TARG); | |
92 | /* no PUTBACK, SETs doesn't inc/dec SP */ | |
93 | return NORMAL; | |
a0d0e21e LW |
94 | } |
95 | ||
96 | PP(pp_gv) | |
97 | { | |
97aff369 | 98 | dVAR; dSP; |
ad64d0ec | 99 | XPUSHs(MUTABLE_SV(cGVOP_gv)); |
a0d0e21e LW |
100 | RETURN; |
101 | } | |
102 | ||
103 | PP(pp_and) | |
104 | { | |
4cc783ef | 105 | dVAR; |
f410a211 | 106 | PERL_ASYNC_CHECK(); |
4cc783ef DD |
107 | { |
108 | /* SP is not used to remove a variable that is saved across the | |
109 | sv_2bool_flags call in SvTRUE_NN, if a RISC/CISC or low/high machine | |
110 | register or load/store vs direct mem ops macro is introduced, this | |
111 | should be a define block between direct PL_stack_sp and dSP operations, | |
112 | presently, using PL_stack_sp is bias towards CISC cpus */ | |
113 | SV * const sv = *PL_stack_sp; | |
114 | if (!SvTRUE_NN(sv)) | |
115 | return NORMAL; | |
116 | else { | |
117 | if (PL_op->op_type == OP_AND) | |
118 | --PL_stack_sp; | |
119 | return cLOGOP->op_other; | |
120 | } | |
a0d0e21e LW |
121 | } |
122 | } | |
123 | ||
124 | PP(pp_sassign) | |
125 | { | |
3e75a3c4 RU |
126 | dVAR; dSP; |
127 | /* sassign keeps its args in the optree traditionally backwards. | |
128 | So we pop them differently. | |
129 | */ | |
130 | SV *left = POPs; SV *right = TOPs; | |
748a9306 | 131 | |
533c011a | 132 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
0bd48802 AL |
133 | SV * const temp = left; |
134 | left = right; right = temp; | |
a0d0e21e | 135 | } |
5d9574c1 | 136 | if (TAINTING_get && UNLIKELY(TAINT_get) && !SvTAINTED(right)) |
a0d0e21e | 137 | TAINT_NOT; |
5d9574c1 DM |
138 | if (UNLIKELY(PL_op->op_private & OPpASSIGN_CV_TO_GV)) { |
139 | /* *foo =\&bar */ | |
3e75a3c4 | 140 | SV * const cv = SvRV(right); |
e26df76a | 141 | const U32 cv_type = SvTYPE(cv); |
3e75a3c4 | 142 | const bool is_gv = isGV_with_GP(left); |
6136c704 | 143 | const bool got_coderef = cv_type == SVt_PVCV || cv_type == SVt_PVFM; |
e26df76a NC |
144 | |
145 | if (!got_coderef) { | |
146 | assert(SvROK(cv)); | |
147 | } | |
148 | ||
3e75a3c4 RU |
149 | /* Can do the optimisation if left (LVALUE) is not a typeglob, |
150 | right (RVALUE) is a reference to something, and we're in void | |
e26df76a | 151 | context. */ |
13be902c | 152 | if (!got_coderef && !is_gv && GIMME_V == G_VOID) { |
e26df76a | 153 | /* Is the target symbol table currently empty? */ |
3e75a3c4 | 154 | GV * const gv = gv_fetchsv_nomg(left, GV_NOINIT, SVt_PVGV); |
bb112e5a | 155 | if (SvTYPE(gv) != SVt_PVGV && !SvOK(gv)) { |
e26df76a NC |
156 | /* Good. Create a new proxy constant subroutine in the target. |
157 | The gv becomes a(nother) reference to the constant. */ | |
158 | SV *const value = SvRV(cv); | |
159 | ||
ad64d0ec | 160 | SvUPGRADE(MUTABLE_SV(gv), SVt_IV); |
1ccdb730 | 161 | SvPCS_IMPORTED_on(gv); |
e26df76a | 162 | SvRV_set(gv, value); |
b37c2d43 | 163 | SvREFCNT_inc_simple_void(value); |
3e75a3c4 | 164 | SETs(left); |
e26df76a NC |
165 | RETURN; |
166 | } | |
167 | } | |
168 | ||
169 | /* Need to fix things up. */ | |
13be902c | 170 | if (!is_gv) { |
e26df76a | 171 | /* Need to fix GV. */ |
3e75a3c4 | 172 | left = MUTABLE_SV(gv_fetchsv_nomg(left,GV_ADD, SVt_PVGV)); |
e26df76a NC |
173 | } |
174 | ||
175 | if (!got_coderef) { | |
176 | /* We've been returned a constant rather than a full subroutine, | |
177 | but they expect a subroutine reference to apply. */ | |
53a42478 | 178 | if (SvROK(cv)) { |
d343c3ef | 179 | ENTER_with_name("sassign_coderef"); |
53a42478 NC |
180 | SvREFCNT_inc_void(SvRV(cv)); |
181 | /* newCONSTSUB takes a reference count on the passed in SV | |
182 | from us. We set the name to NULL, otherwise we get into | |
183 | all sorts of fun as the reference to our new sub is | |
184 | donated to the GV that we're about to assign to. | |
185 | */ | |
3e75a3c4 | 186 | SvRV_set(right, MUTABLE_SV(newCONSTSUB(GvSTASH(left), NULL, |
ad64d0ec | 187 | SvRV(cv)))); |
fc2b2dca | 188 | SvREFCNT_dec_NN(cv); |
d343c3ef | 189 | LEAVE_with_name("sassign_coderef"); |
53a42478 NC |
190 | } else { |
191 | /* What can happen for the corner case *{"BONK"} = \&{"BONK"}; | |
192 | is that | |
193 | First: ops for \&{"BONK"}; return us the constant in the | |
194 | symbol table | |
195 | Second: ops for *{"BONK"} cause that symbol table entry | |
196 | (and our reference to it) to be upgraded from RV | |
197 | to typeblob) | |
198 | Thirdly: We get here. cv is actually PVGV now, and its | |
199 | GvCV() is actually the subroutine we're looking for | |
200 | ||
201 | So change the reference so that it points to the subroutine | |
202 | of that typeglob, as that's what they were after all along. | |
203 | */ | |
159b6efe | 204 | GV *const upgraded = MUTABLE_GV(cv); |
53a42478 NC |
205 | CV *const source = GvCV(upgraded); |
206 | ||
207 | assert(source); | |
208 | assert(CvFLAGS(source) & CVf_CONST); | |
209 | ||
210 | SvREFCNT_inc_void(source); | |
fc2b2dca | 211 | SvREFCNT_dec_NN(upgraded); |
3e75a3c4 | 212 | SvRV_set(right, MUTABLE_SV(source)); |
53a42478 | 213 | } |
e26df76a | 214 | } |
53a42478 | 215 | |
e26df76a | 216 | } |
8fe85e3f | 217 | if ( |
5d9574c1 | 218 | UNLIKELY(SvTEMP(left)) && !SvSMAGICAL(left) && SvREFCNT(left) == 1 && |
3e75a3c4 | 219 | (!isGV_with_GP(left) || SvFAKE(left)) && ckWARN(WARN_MISC) |
8fe85e3f FC |
220 | ) |
221 | Perl_warner(aTHX_ | |
222 | packWARN(WARN_MISC), "Useless assignment to a temporary" | |
223 | ); | |
3e75a3c4 RU |
224 | SvSetMagicSV(left, right); |
225 | SETs(left); | |
a0d0e21e LW |
226 | RETURN; |
227 | } | |
228 | ||
229 | PP(pp_cond_expr) | |
230 | { | |
97aff369 | 231 | dVAR; dSP; |
f410a211 | 232 | PERL_ASYNC_CHECK(); |
a0d0e21e | 233 | if (SvTRUEx(POPs)) |
1a67a97c | 234 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 235 | else |
1a67a97c | 236 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
237 | } |
238 | ||
239 | PP(pp_unstack) | |
240 | { | |
97aff369 | 241 | dVAR; |
8f3964af | 242 | PERL_ASYNC_CHECK(); |
a0d0e21e | 243 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 244 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 245 | FREETMPS; |
eae48c89 Z |
246 | if (!(PL_op->op_flags & OPf_SPECIAL)) { |
247 | I32 oldsave = PL_scopestack[PL_scopestack_ix - 1]; | |
248 | LEAVE_SCOPE(oldsave); | |
249 | } | |
a0d0e21e LW |
250 | return NORMAL; |
251 | } | |
252 | ||
a0d0e21e LW |
253 | PP(pp_concat) |
254 | { | |
6f1401dc | 255 | dVAR; dSP; dATARGET; tryAMAGICbin_MG(concat_amg, AMGf_assign); |
748a9306 LW |
256 | { |
257 | dPOPTOPssrl; | |
8d6d96c1 HS |
258 | bool lbyte; |
259 | STRLEN rlen; | |
d4c19fe8 | 260 | const char *rpv = NULL; |
a6b599c7 | 261 | bool rbyte = FALSE; |
a9c4fd4e | 262 | bool rcopied = FALSE; |
8d6d96c1 | 263 | |
6f1401dc DM |
264 | if (TARG == right && right != left) { /* $r = $l.$r */ |
265 | rpv = SvPV_nomg_const(right, rlen); | |
c75ab21a | 266 | rbyte = !DO_UTF8(right); |
59cd0e26 | 267 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
349d4f2f | 268 | rpv = SvPV_const(right, rlen); /* no point setting UTF-8 here */ |
db79b45b | 269 | rcopied = TRUE; |
8d6d96c1 | 270 | } |
7889fe52 | 271 | |
89734059 | 272 | if (TARG != left) { /* not $l .= $r */ |
a9c4fd4e | 273 | STRLEN llen; |
6f1401dc | 274 | const char* const lpv = SvPV_nomg_const(left, llen); |
90f5826e | 275 | lbyte = !DO_UTF8(left); |
8d6d96c1 HS |
276 | sv_setpvn(TARG, lpv, llen); |
277 | if (!lbyte) | |
278 | SvUTF8_on(TARG); | |
279 | else | |
280 | SvUTF8_off(TARG); | |
281 | } | |
18ea7bf2 S |
282 | else { /* $l .= $r and left == TARG */ |
283 | if (!SvOK(left)) { | |
89734059 | 284 | if (left == right && ckWARN(WARN_UNINITIALIZED)) /* $l .= $l */ |
c75ab21a | 285 | report_uninit(right); |
76f68e9b | 286 | sv_setpvs(left, ""); |
c75ab21a | 287 | } |
18ea7bf2 S |
288 | else { |
289 | SvPV_force_nomg_nolen(left); | |
290 | } | |
583a5589 | 291 | lbyte = !DO_UTF8(left); |
90f5826e | 292 | if (IN_BYTES) |
18ea7bf2 | 293 | SvUTF8_off(left); |
8d6d96c1 | 294 | } |
a12c0f56 | 295 | |
c75ab21a | 296 | if (!rcopied) { |
6f1401dc | 297 | if (left == right) |
89734059 | 298 | /* $r.$r: do magic twice: tied might return different 2nd time */ |
6f1401dc DM |
299 | SvGETMAGIC(right); |
300 | rpv = SvPV_nomg_const(right, rlen); | |
c75ab21a RH |
301 | rbyte = !DO_UTF8(right); |
302 | } | |
8d6d96c1 | 303 | if (lbyte != rbyte) { |
e3393f51 NT |
304 | /* sv_utf8_upgrade_nomg() may reallocate the stack */ |
305 | PUTBACK; | |
8d6d96c1 HS |
306 | if (lbyte) |
307 | sv_utf8_upgrade_nomg(TARG); | |
308 | else { | |
db79b45b | 309 | if (!rcopied) |
59cd0e26 | 310 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
8d6d96c1 | 311 | sv_utf8_upgrade_nomg(right); |
6f1401dc | 312 | rpv = SvPV_nomg_const(right, rlen); |
69b47968 | 313 | } |
e3393f51 | 314 | SPAGAIN; |
a0d0e21e | 315 | } |
8d6d96c1 | 316 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 317 | |
a0d0e21e LW |
318 | SETTARG; |
319 | RETURN; | |
748a9306 | 320 | } |
a0d0e21e LW |
321 | } |
322 | ||
d5524600 DM |
323 | /* push the elements of av onto the stack. |
324 | * XXX Note that padav has similar code but without the mg_get(). | |
325 | * I suspect that the mg_get is no longer needed, but while padav | |
326 | * differs, it can't share this function */ | |
327 | ||
f9ae8fb6 | 328 | STATIC void |
d5524600 DM |
329 | S_pushav(pTHX_ AV* const av) |
330 | { | |
331 | dSP; | |
c70927a6 | 332 | const SSize_t maxarg = AvFILL(av) + 1; |
d5524600 | 333 | EXTEND(SP, maxarg); |
5d9574c1 | 334 | if (UNLIKELY(SvRMAGICAL(av))) { |
c70927a6 FC |
335 | PADOFFSET i; |
336 | for (i=0; i < (PADOFFSET)maxarg; i++) { | |
d5524600 DM |
337 | SV ** const svp = av_fetch(av, i, FALSE); |
338 | /* See note in pp_helem, and bug id #27839 */ | |
339 | SP[i+1] = svp | |
340 | ? SvGMAGICAL(*svp) ? (mg_get(*svp), *svp) : *svp | |
341 | : &PL_sv_undef; | |
342 | } | |
343 | } | |
344 | else { | |
c70927a6 FC |
345 | PADOFFSET i; |
346 | for (i=0; i < (PADOFFSET)maxarg; i++) { | |
ce0d59fd | 347 | SV * const sv = AvARRAY(av)[i]; |
5d9574c1 | 348 | SP[i+1] = LIKELY(sv) ? sv : &PL_sv_undef; |
ce0d59fd | 349 | } |
d5524600 DM |
350 | } |
351 | SP += maxarg; | |
352 | PUTBACK; | |
353 | } | |
354 | ||
355 | ||
a7fd8ef6 DM |
356 | /* ($lex1,@lex2,...) or my ($lex1,@lex2,...) */ |
357 | ||
358 | PP(pp_padrange) | |
359 | { | |
360 | dVAR; dSP; | |
361 | PADOFFSET base = PL_op->op_targ; | |
362 | int count = (int)(PL_op->op_private) & OPpPADRANGE_COUNTMASK; | |
363 | int i; | |
d5524600 DM |
364 | if (PL_op->op_flags & OPf_SPECIAL) { |
365 | /* fake the RHS of my ($x,$y,..) = @_ */ | |
366 | PUSHMARK(SP); | |
367 | S_pushav(aTHX_ GvAVn(PL_defgv)); | |
368 | SPAGAIN; | |
369 | } | |
370 | ||
a7fd8ef6 DM |
371 | /* note, this is only skipped for compile-time-known void cxt */ |
372 | if ((PL_op->op_flags & OPf_WANT) != OPf_WANT_VOID) { | |
373 | EXTEND(SP, count); | |
374 | PUSHMARK(SP); | |
375 | for (i = 0; i <count; i++) | |
376 | *++SP = PAD_SV(base+i); | |
377 | } | |
378 | if (PL_op->op_private & OPpLVAL_INTRO) { | |
4e09461c DM |
379 | SV **svp = &(PAD_SVl(base)); |
380 | const UV payload = (UV)( | |
381 | (base << (OPpPADRANGE_COUNTSHIFT + SAVE_TIGHT_SHIFT)) | |
382 | | (count << SAVE_TIGHT_SHIFT) | |
383 | | SAVEt_CLEARPADRANGE); | |
384 | assert(OPpPADRANGE_COUNTMASK + 1 == (1 <<OPpPADRANGE_COUNTSHIFT)); | |
385 | assert((payload >> (OPpPADRANGE_COUNTSHIFT+SAVE_TIGHT_SHIFT)) == base); | |
a3444cc5 DM |
386 | { |
387 | dSS_ADD; | |
388 | SS_ADD_UV(payload); | |
389 | SS_ADD_END(1); | |
390 | } | |
4e09461c | 391 | |
a7fd8ef6 | 392 | for (i = 0; i <count; i++) |
4e09461c | 393 | SvPADSTALE_off(*svp++); /* mark lexical as active */ |
a7fd8ef6 DM |
394 | } |
395 | RETURN; | |
396 | } | |
397 | ||
398 | ||
a0d0e21e LW |
399 | PP(pp_padsv) |
400 | { | |
6c28b496 DD |
401 | dVAR; dSP; |
402 | EXTEND(SP, 1); | |
403 | { | |
404 | OP * const op = PL_op; | |
405 | /* access PL_curpad once */ | |
406 | SV ** const padentry = &(PAD_SVl(op->op_targ)); | |
407 | { | |
408 | dTARG; | |
409 | TARG = *padentry; | |
410 | PUSHs(TARG); | |
411 | PUTBACK; /* no pop/push after this, TOPs ok */ | |
8ec5e241 | 412 | } |
6c28b496 DD |
413 | if (op->op_flags & OPf_MOD) { |
414 | if (op->op_private & OPpLVAL_INTRO) | |
415 | if (!(op->op_private & OPpPAD_STATE)) | |
416 | save_clearsv(padentry); | |
417 | if (op->op_private & OPpDEREF) { | |
8f90a16d FC |
418 | /* TOPs is equivalent to TARG here. Using TOPs (SP) rather |
419 | than TARG reduces the scope of TARG, so it does not | |
420 | span the call to save_clearsv, resulting in smaller | |
421 | machine code. */ | |
6c28b496 DD |
422 | TOPs = vivify_ref(TOPs, op->op_private & OPpDEREF); |
423 | } | |
424 | } | |
425 | return op->op_next; | |
4633a7c4 | 426 | } |
a0d0e21e LW |
427 | } |
428 | ||
429 | PP(pp_readline) | |
430 | { | |
97aff369 | 431 | dVAR; |
30901a8a FC |
432 | dSP; |
433 | if (TOPs) { | |
434 | SvGETMAGIC(TOPs); | |
fc99edcf | 435 | tryAMAGICunTARGETlist(iter_amg, 0); |
30901a8a FC |
436 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
437 | } | |
438 | else PL_last_in_gv = PL_argvgv, PL_stack_sp--; | |
6e592b3a BM |
439 | if (!isGV_with_GP(PL_last_in_gv)) { |
440 | if (SvROK(PL_last_in_gv) && isGV_with_GP(SvRV(PL_last_in_gv))) | |
159b6efe | 441 | PL_last_in_gv = MUTABLE_GV(SvRV(PL_last_in_gv)); |
8efb3254 | 442 | else { |
f5284f61 | 443 | dSP; |
ad64d0ec | 444 | XPUSHs(MUTABLE_SV(PL_last_in_gv)); |
f5284f61 | 445 | PUTBACK; |
897d3989 | 446 | Perl_pp_rv2gv(aTHX); |
159b6efe | 447 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
f5284f61 IZ |
448 | } |
449 | } | |
a0d0e21e LW |
450 | return do_readline(); |
451 | } | |
452 | ||
453 | PP(pp_eq) | |
454 | { | |
6f1401dc | 455 | dVAR; dSP; |
33efebe6 DM |
456 | SV *left, *right; |
457 | ||
a42d0242 | 458 | tryAMAGICbin_MG(eq_amg, AMGf_set|AMGf_numeric); |
33efebe6 DM |
459 | right = POPs; |
460 | left = TOPs; | |
461 | SETs(boolSV( | |
462 | (SvIOK_notUV(left) && SvIOK_notUV(right)) | |
463 | ? (SvIVX(left) == SvIVX(right)) | |
464 | : ( do_ncmp(left, right) == 0) | |
465 | )); | |
466 | RETURN; | |
a0d0e21e LW |
467 | } |
468 | ||
469 | PP(pp_preinc) | |
470 | { | |
97aff369 | 471 | dVAR; dSP; |
17058fe0 FC |
472 | const bool inc = |
473 | PL_op->op_type == OP_PREINC || PL_op->op_type == OP_I_PREINC; | |
5d9574c1 | 474 | if (UNLIKELY(SvTYPE(TOPs) >= SVt_PVAV || (isGV_with_GP(TOPs) && !SvFAKE(TOPs)))) |
cb077ed2 | 475 | Perl_croak_no_modify(); |
5d9574c1 | 476 | if (LIKELY(!SvREADONLY(TOPs) && !SvGMAGICAL(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs)) |
17058fe0 | 477 | && SvIVX(TOPs) != (inc ? IV_MAX : IV_MIN)) |
55497cff | 478 | { |
17058fe0 | 479 | SvIV_set(TOPs, SvIVX(TOPs) + (inc ? 1 : -1)); |
55497cff | 480 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 481 | } |
28e5dec8 | 482 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
17058fe0 FC |
483 | if (inc) sv_inc(TOPs); |
484 | else sv_dec(TOPs); | |
a0d0e21e LW |
485 | SvSETMAGIC(TOPs); |
486 | return NORMAL; | |
487 | } | |
488 | ||
489 | PP(pp_or) | |
490 | { | |
97aff369 | 491 | dVAR; dSP; |
f410a211 | 492 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
493 | if (SvTRUE(TOPs)) |
494 | RETURN; | |
495 | else { | |
c960fc3b SP |
496 | if (PL_op->op_type == OP_OR) |
497 | --SP; | |
a0d0e21e LW |
498 | RETURNOP(cLOGOP->op_other); |
499 | } | |
500 | } | |
501 | ||
25a55bd7 | 502 | PP(pp_defined) |
c963b151 | 503 | { |
97aff369 | 504 | dVAR; dSP; |
eb578fdb | 505 | SV* sv; |
6136c704 | 506 | bool defined; |
25a55bd7 | 507 | const int op_type = PL_op->op_type; |
ea5195b7 | 508 | const bool is_dor = (op_type == OP_DOR || op_type == OP_DORASSIGN); |
c963b151 | 509 | |
6136c704 | 510 | if (is_dor) { |
f410a211 | 511 | PERL_ASYNC_CHECK(); |
25a55bd7 | 512 | sv = TOPs; |
5d9574c1 | 513 | if (UNLIKELY(!sv || !SvANY(sv))) { |
2bd49cfc NC |
514 | if (op_type == OP_DOR) |
515 | --SP; | |
25a55bd7 SP |
516 | RETURNOP(cLOGOP->op_other); |
517 | } | |
b7c44293 RGS |
518 | } |
519 | else { | |
520 | /* OP_DEFINED */ | |
25a55bd7 | 521 | sv = POPs; |
5d9574c1 | 522 | if (UNLIKELY(!sv || !SvANY(sv))) |
25a55bd7 | 523 | RETPUSHNO; |
b7c44293 | 524 | } |
25a55bd7 | 525 | |
6136c704 | 526 | defined = FALSE; |
c963b151 BD |
527 | switch (SvTYPE(sv)) { |
528 | case SVt_PVAV: | |
529 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 530 | defined = TRUE; |
c963b151 BD |
531 | break; |
532 | case SVt_PVHV: | |
533 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 534 | defined = TRUE; |
c963b151 BD |
535 | break; |
536 | case SVt_PVCV: | |
537 | if (CvROOT(sv) || CvXSUB(sv)) | |
25a55bd7 | 538 | defined = TRUE; |
c963b151 BD |
539 | break; |
540 | default: | |
5b295bef | 541 | SvGETMAGIC(sv); |
c963b151 | 542 | if (SvOK(sv)) |
25a55bd7 | 543 | defined = TRUE; |
6136c704 | 544 | break; |
c963b151 | 545 | } |
6136c704 AL |
546 | |
547 | if (is_dor) { | |
c960fc3b SP |
548 | if(defined) |
549 | RETURN; | |
550 | if(op_type == OP_DOR) | |
551 | --SP; | |
25a55bd7 | 552 | RETURNOP(cLOGOP->op_other); |
25a55bd7 | 553 | } |
d9aa96a4 SP |
554 | /* assuming OP_DEFINED */ |
555 | if(defined) | |
556 | RETPUSHYES; | |
557 | RETPUSHNO; | |
c963b151 BD |
558 | } |
559 | ||
a0d0e21e LW |
560 | PP(pp_add) |
561 | { | |
800401ee | 562 | dVAR; dSP; dATARGET; bool useleft; SV *svl, *svr; |
6f1401dc DM |
563 | tryAMAGICbin_MG(add_amg, AMGf_assign|AMGf_numeric); |
564 | svr = TOPs; | |
565 | svl = TOPm1s; | |
566 | ||
800401ee | 567 | useleft = USE_LEFT(svl); |
28e5dec8 JH |
568 | #ifdef PERL_PRESERVE_IVUV |
569 | /* We must see if we can perform the addition with integers if possible, | |
570 | as the integer code detects overflow while the NV code doesn't. | |
571 | If either argument hasn't had a numeric conversion yet attempt to get | |
572 | the IV. It's important to do this now, rather than just assuming that | |
573 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
574 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
575 | integer in case the second argument is IV=9223372036854775806 | |
576 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
577 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
578 | ||
579 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
580 | fp maths for integer values. |
581 | ||
a00b5bd3 | 582 | How to detect overflow? |
7dca457a NC |
583 | |
584 | C 99 section 6.2.6.1 says | |
585 | ||
586 | The range of nonnegative values of a signed integer type is a subrange | |
587 | of the corresponding unsigned integer type, and the representation of | |
588 | the same value in each type is the same. A computation involving | |
589 | unsigned operands can never overflow, because a result that cannot be | |
590 | represented by the resulting unsigned integer type is reduced modulo | |
591 | the number that is one greater than the largest value that can be | |
592 | represented by the resulting type. | |
593 | ||
594 | (the 9th paragraph) | |
595 | ||
596 | which I read as "unsigned ints wrap." | |
597 | ||
598 | signed integer overflow seems to be classed as "exception condition" | |
599 | ||
600 | If an exceptional condition occurs during the evaluation of an | |
601 | expression (that is, if the result is not mathematically defined or not | |
602 | in the range of representable values for its type), the behavior is | |
603 | undefined. | |
604 | ||
605 | (6.5, the 5th paragraph) | |
606 | ||
607 | I had assumed that on 2s complement machines signed arithmetic would | |
608 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
609 | everything perl builds on would be happy. After much wailing and | |
610 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
611 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
612 | unsigned code below is actually shorter than the old code. :-) | |
613 | */ | |
614 | ||
01f91bf2 | 615 | if (SvIV_please_nomg(svr)) { |
28e5dec8 JH |
616 | /* Unless the left argument is integer in range we are going to have to |
617 | use NV maths. Hence only attempt to coerce the right argument if | |
618 | we know the left is integer. */ | |
eb578fdb | 619 | UV auv = 0; |
9c5ffd7c | 620 | bool auvok = FALSE; |
7dca457a NC |
621 | bool a_valid = 0; |
622 | ||
28e5dec8 | 623 | if (!useleft) { |
7dca457a NC |
624 | auv = 0; |
625 | a_valid = auvok = 1; | |
626 | /* left operand is undef, treat as zero. + 0 is identity, | |
627 | Could SETi or SETu right now, but space optimise by not adding | |
628 | lots of code to speed up what is probably a rarish case. */ | |
629 | } else { | |
630 | /* Left operand is defined, so is it IV? */ | |
01f91bf2 | 631 | if (SvIV_please_nomg(svl)) { |
800401ee JH |
632 | if ((auvok = SvUOK(svl))) |
633 | auv = SvUVX(svl); | |
7dca457a | 634 | else { |
eb578fdb | 635 | const IV aiv = SvIVX(svl); |
7dca457a NC |
636 | if (aiv >= 0) { |
637 | auv = aiv; | |
638 | auvok = 1; /* Now acting as a sign flag. */ | |
639 | } else { /* 2s complement assumption for IV_MIN */ | |
640 | auv = (UV)-aiv; | |
641 | } | |
642 | } | |
643 | a_valid = 1; | |
28e5dec8 JH |
644 | } |
645 | } | |
7dca457a NC |
646 | if (a_valid) { |
647 | bool result_good = 0; | |
648 | UV result; | |
eb578fdb | 649 | UV buv; |
800401ee | 650 | bool buvok = SvUOK(svr); |
a00b5bd3 | 651 | |
7dca457a | 652 | if (buvok) |
800401ee | 653 | buv = SvUVX(svr); |
7dca457a | 654 | else { |
eb578fdb | 655 | const IV biv = SvIVX(svr); |
7dca457a NC |
656 | if (biv >= 0) { |
657 | buv = biv; | |
658 | buvok = 1; | |
659 | } else | |
660 | buv = (UV)-biv; | |
661 | } | |
662 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 663 | else "IV" now, independent of how it came in. |
7dca457a NC |
664 | if a, b represents positive, A, B negative, a maps to -A etc |
665 | a + b => (a + b) | |
666 | A + b => -(a - b) | |
667 | a + B => (a - b) | |
668 | A + B => -(a + b) | |
669 | all UV maths. negate result if A negative. | |
670 | add if signs same, subtract if signs differ. */ | |
671 | ||
672 | if (auvok ^ buvok) { | |
673 | /* Signs differ. */ | |
674 | if (auv >= buv) { | |
675 | result = auv - buv; | |
676 | /* Must get smaller */ | |
677 | if (result <= auv) | |
678 | result_good = 1; | |
679 | } else { | |
680 | result = buv - auv; | |
681 | if (result <= buv) { | |
682 | /* result really should be -(auv-buv). as its negation | |
683 | of true value, need to swap our result flag */ | |
684 | auvok = !auvok; | |
685 | result_good = 1; | |
28e5dec8 JH |
686 | } |
687 | } | |
7dca457a NC |
688 | } else { |
689 | /* Signs same */ | |
690 | result = auv + buv; | |
691 | if (result >= auv) | |
692 | result_good = 1; | |
693 | } | |
694 | if (result_good) { | |
695 | SP--; | |
696 | if (auvok) | |
28e5dec8 | 697 | SETu( result ); |
7dca457a NC |
698 | else { |
699 | /* Negate result */ | |
700 | if (result <= (UV)IV_MIN) | |
701 | SETi( -(IV)result ); | |
702 | else { | |
703 | /* result valid, but out of range for IV. */ | |
704 | SETn( -(NV)result ); | |
28e5dec8 JH |
705 | } |
706 | } | |
7dca457a NC |
707 | RETURN; |
708 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
709 | } |
710 | } | |
711 | #endif | |
a0d0e21e | 712 | { |
6f1401dc | 713 | NV value = SvNV_nomg(svr); |
4efa5a16 | 714 | (void)POPs; |
28e5dec8 JH |
715 | if (!useleft) { |
716 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
717 | SETn(value); | |
718 | RETURN; | |
719 | } | |
6f1401dc | 720 | SETn( value + SvNV_nomg(svl) ); |
28e5dec8 | 721 | RETURN; |
a0d0e21e LW |
722 | } |
723 | } | |
724 | ||
725 | PP(pp_aelemfast) | |
726 | { | |
97aff369 | 727 | dVAR; dSP; |
93bad3fd | 728 | AV * const av = PL_op->op_type == OP_AELEMFAST_LEX |
8f878375 | 729 | ? MUTABLE_AV(PAD_SV(PL_op->op_targ)) : GvAVn(cGVOP_gv); |
a3b680e6 | 730 | const U32 lval = PL_op->op_flags & OPf_MOD; |
b024352e | 731 | SV** const svp = av_fetch(av, (I8)PL_op->op_private, lval); |
3280af22 | 732 | SV *sv = (svp ? *svp : &PL_sv_undef); |
b024352e DM |
733 | |
734 | if (UNLIKELY(!svp && lval)) | |
735 | DIE(aTHX_ PL_no_aelem, (int)(I8)PL_op->op_private); | |
736 | ||
6ff81951 | 737 | EXTEND(SP, 1); |
39cf747a | 738 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 739 | mg_get(sv); |
be6c24e0 | 740 | PUSHs(sv); |
a0d0e21e LW |
741 | RETURN; |
742 | } | |
743 | ||
744 | PP(pp_join) | |
745 | { | |
97aff369 | 746 | dVAR; dSP; dMARK; dTARGET; |
a0d0e21e LW |
747 | MARK++; |
748 | do_join(TARG, *MARK, MARK, SP); | |
749 | SP = MARK; | |
750 | SETs(TARG); | |
751 | RETURN; | |
752 | } | |
753 | ||
754 | PP(pp_pushre) | |
755 | { | |
97aff369 | 756 | dVAR; dSP; |
44a8e56a | 757 | #ifdef DEBUGGING |
758 | /* | |
759 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
760 | * will be enough to hold an OP*. | |
761 | */ | |
c4420975 | 762 | SV* const sv = sv_newmortal(); |
44a8e56a | 763 | sv_upgrade(sv, SVt_PVLV); |
764 | LvTYPE(sv) = '/'; | |
533c011a | 765 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 766 | XPUSHs(sv); |
767 | #else | |
ad64d0ec | 768 | XPUSHs(MUTABLE_SV(PL_op)); |
44a8e56a | 769 | #endif |
a0d0e21e LW |
770 | RETURN; |
771 | } | |
772 | ||
773 | /* Oversized hot code. */ | |
774 | ||
775 | PP(pp_print) | |
776 | { | |
27da23d5 | 777 | dVAR; dSP; dMARK; dORIGMARK; |
eb578fdb | 778 | PerlIO *fp; |
236988e4 | 779 | MAGIC *mg; |
159b6efe NC |
780 | GV * const gv |
781 | = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv; | |
9c9f25b8 | 782 | IO *io = GvIO(gv); |
5b468f54 | 783 | |
9c9f25b8 | 784 | if (io |
ad64d0ec | 785 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
5b468f54 | 786 | { |
01bb7c6d | 787 | had_magic: |
68dc0745 | 788 | if (MARK == ORIGMARK) { |
1c846c1f | 789 | /* If using default handle then we need to make space to |
a60c0954 NIS |
790 | * pass object as 1st arg, so move other args up ... |
791 | */ | |
4352c267 | 792 | MEXTEND(SP, 1); |
68dc0745 | 793 | ++MARK; |
794 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
795 | ++SP; | |
796 | } | |
3e0cb5de | 797 | return Perl_tied_method(aTHX_ SV_CONST(PRINT), mark - 1, MUTABLE_SV(io), |
94bc412f NC |
798 | mg, |
799 | (G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK | |
800 | | (PL_op->op_type == OP_SAY | |
801 | ? TIED_METHOD_SAY : 0)), sp - mark); | |
236988e4 | 802 | } |
9c9f25b8 | 803 | if (!io) { |
68b590d9 | 804 | if ( gv && GvEGVx(gv) && (io = GvIO(GvEGV(gv))) |
ad64d0ec | 805 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
01bb7c6d | 806 | goto had_magic; |
51087808 | 807 | report_evil_fh(gv); |
93189314 | 808 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
809 | goto just_say_no; |
810 | } | |
811 | else if (!(fp = IoOFP(io))) { | |
7716c5c5 NC |
812 | if (IoIFP(io)) |
813 | report_wrongway_fh(gv, '<'); | |
51087808 | 814 | else |
7716c5c5 | 815 | report_evil_fh(gv); |
93189314 | 816 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e LW |
817 | goto just_say_no; |
818 | } | |
819 | else { | |
e23d9e2f | 820 | SV * const ofs = GvSV(PL_ofsgv); /* $, */ |
a0d0e21e | 821 | MARK++; |
e23d9e2f | 822 | if (ofs && (SvGMAGICAL(ofs) || SvOK(ofs))) { |
a0d0e21e LW |
823 | while (MARK <= SP) { |
824 | if (!do_print(*MARK, fp)) | |
825 | break; | |
826 | MARK++; | |
827 | if (MARK <= SP) { | |
e23d9e2f CS |
828 | /* don't use 'ofs' here - it may be invalidated by magic callbacks */ |
829 | if (!do_print(GvSV(PL_ofsgv), fp)) { | |
a0d0e21e LW |
830 | MARK--; |
831 | break; | |
832 | } | |
833 | } | |
834 | } | |
835 | } | |
836 | else { | |
837 | while (MARK <= SP) { | |
838 | if (!do_print(*MARK, fp)) | |
839 | break; | |
840 | MARK++; | |
841 | } | |
842 | } | |
843 | if (MARK <= SP) | |
844 | goto just_say_no; | |
845 | else { | |
cfc4a7da GA |
846 | if (PL_op->op_type == OP_SAY) { |
847 | if (PerlIO_write(fp, "\n", 1) == 0 || PerlIO_error(fp)) | |
848 | goto just_say_no; | |
849 | } | |
850 | else if (PL_ors_sv && SvOK(PL_ors_sv)) | |
7889fe52 | 851 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
a0d0e21e LW |
852 | goto just_say_no; |
853 | ||
854 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 855 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
856 | goto just_say_no; |
857 | } | |
858 | } | |
859 | SP = ORIGMARK; | |
e52fd6f4 | 860 | XPUSHs(&PL_sv_yes); |
a0d0e21e LW |
861 | RETURN; |
862 | ||
863 | just_say_no: | |
864 | SP = ORIGMARK; | |
e52fd6f4 | 865 | XPUSHs(&PL_sv_undef); |
a0d0e21e LW |
866 | RETURN; |
867 | } | |
868 | ||
869 | PP(pp_rv2av) | |
870 | { | |
97aff369 | 871 | dVAR; dSP; dTOPss; |
cde874ca | 872 | const I32 gimme = GIMME_V; |
17ab7946 NC |
873 | static const char an_array[] = "an ARRAY"; |
874 | static const char a_hash[] = "a HASH"; | |
875 | const bool is_pp_rv2av = PL_op->op_type == OP_RV2AV; | |
d83b45b8 | 876 | const svtype type = is_pp_rv2av ? SVt_PVAV : SVt_PVHV; |
a0d0e21e | 877 | |
9026059d | 878 | SvGETMAGIC(sv); |
a0d0e21e | 879 | if (SvROK(sv)) { |
5d9574c1 | 880 | if (UNLIKELY(SvAMAGIC(sv))) { |
93d7320b | 881 | sv = amagic_deref_call(sv, is_pp_rv2av ? to_av_amg : to_hv_amg); |
93d7320b | 882 | } |
17ab7946 | 883 | sv = SvRV(sv); |
5d9574c1 | 884 | if (UNLIKELY(SvTYPE(sv) != type)) |
dcbac5bb | 885 | /* diag_listed_as: Not an ARRAY reference */ |
17ab7946 | 886 | DIE(aTHX_ "Not %s reference", is_pp_rv2av ? an_array : a_hash); |
5d9574c1 DM |
887 | else if (UNLIKELY(PL_op->op_flags & OPf_MOD |
888 | && PL_op->op_private & OPpLVAL_INTRO)) | |
3da99855 | 889 | Perl_croak(aTHX_ "%s", PL_no_localize_ref); |
a0d0e21e | 890 | } |
5d9574c1 | 891 | else if (UNLIKELY(SvTYPE(sv) != type)) { |
67955e0c | 892 | GV *gv; |
1c846c1f | 893 | |
6e592b3a | 894 | if (!isGV_with_GP(sv)) { |
dc3c76f8 NC |
895 | gv = Perl_softref2xv(aTHX_ sv, is_pp_rv2av ? an_array : a_hash, |
896 | type, &sp); | |
897 | if (!gv) | |
898 | RETURN; | |
35cd451c GS |
899 | } |
900 | else { | |
159b6efe | 901 | gv = MUTABLE_GV(sv); |
a0d0e21e | 902 | } |
ad64d0ec | 903 | sv = is_pp_rv2av ? MUTABLE_SV(GvAVn(gv)) : MUTABLE_SV(GvHVn(gv)); |
533c011a | 904 | if (PL_op->op_private & OPpLVAL_INTRO) |
ad64d0ec | 905 | sv = is_pp_rv2av ? MUTABLE_SV(save_ary(gv)) : MUTABLE_SV(save_hash(gv)); |
9f527363 FC |
906 | } |
907 | if (PL_op->op_flags & OPf_REF) { | |
17ab7946 | 908 | SETs(sv); |
a0d0e21e | 909 | RETURN; |
9f527363 | 910 | } |
5d9574c1 | 911 | else if (UNLIKELY(PL_op->op_private & OPpMAYBE_LVSUB)) { |
40c94d11 FC |
912 | const I32 flags = is_lvalue_sub(); |
913 | if (flags && !(flags & OPpENTERSUB_INARGS)) { | |
cde874ca | 914 | if (gimme != G_ARRAY) |
042560a6 | 915 | goto croak_cant_return; |
17ab7946 | 916 | SETs(sv); |
78f9721b | 917 | RETURN; |
40c94d11 | 918 | } |
a0d0e21e LW |
919 | } |
920 | ||
17ab7946 | 921 | if (is_pp_rv2av) { |
502c6561 | 922 | AV *const av = MUTABLE_AV(sv); |
486ec47a | 923 | /* The guts of pp_rv2av, with no intending change to preserve history |
17ab7946 NC |
924 | (until such time as we get tools that can do blame annotation across |
925 | whitespace changes. */ | |
96913b52 | 926 | if (gimme == G_ARRAY) { |
d5524600 DM |
927 | SP--; |
928 | PUTBACK; | |
929 | S_pushav(aTHX_ av); | |
930 | SPAGAIN; | |
1c846c1f | 931 | } |
96913b52 VP |
932 | else if (gimme == G_SCALAR) { |
933 | dTARGET; | |
c70927a6 | 934 | const SSize_t maxarg = AvFILL(av) + 1; |
96913b52 | 935 | SETi(maxarg); |
93965878 | 936 | } |
17ab7946 NC |
937 | } else { |
938 | /* The guts of pp_rv2hv */ | |
96913b52 VP |
939 | if (gimme == G_ARRAY) { /* array wanted */ |
940 | *PL_stack_sp = sv; | |
981b7185 | 941 | return Perl_do_kv(aTHX); |
96913b52 | 942 | } |
c8fe3bdf | 943 | else if ((PL_op->op_private & OPpTRUEBOOL |
adc42c31 | 944 | || ( PL_op->op_private & OPpMAYBE_TRUEBOOL |
c8fe3bdf FC |
945 | && block_gimme() == G_VOID )) |
946 | && (!SvRMAGICAL(sv) || !mg_find(sv, PERL_MAGIC_tied))) | |
947 | SETs(HvUSEDKEYS(sv) ? &PL_sv_yes : sv_2mortal(newSViv(0))); | |
96913b52 | 948 | else if (gimme == G_SCALAR) { |
1a8bdda9 | 949 | dTARG; |
96913b52 | 950 | TARG = Perl_hv_scalar(aTHX_ MUTABLE_HV(sv)); |
96913b52 VP |
951 | SETTARG; |
952 | } | |
17ab7946 | 953 | } |
be85d344 | 954 | RETURN; |
042560a6 NC |
955 | |
956 | croak_cant_return: | |
957 | Perl_croak(aTHX_ "Can't return %s to lvalue scalar context", | |
958 | is_pp_rv2av ? "array" : "hash"); | |
77e217c6 | 959 | RETURN; |
a0d0e21e LW |
960 | } |
961 | ||
10c8fecd | 962 | STATIC void |
fb8f4cf8 | 963 | S_do_oddball(pTHX_ SV **oddkey, SV **firstkey) |
10c8fecd | 964 | { |
97aff369 | 965 | dVAR; |
7918f24d NC |
966 | |
967 | PERL_ARGS_ASSERT_DO_ODDBALL; | |
968 | ||
fb8f4cf8 | 969 | if (*oddkey) { |
6d822dc4 | 970 | if (ckWARN(WARN_MISC)) { |
a3b680e6 | 971 | const char *err; |
fb8f4cf8 RZ |
972 | if (oddkey == firstkey && |
973 | SvROK(*oddkey) && | |
974 | (SvTYPE(SvRV(*oddkey)) == SVt_PVAV || | |
975 | SvTYPE(SvRV(*oddkey)) == SVt_PVHV)) | |
10c8fecd | 976 | { |
a3b680e6 | 977 | err = "Reference found where even-sized list expected"; |
10c8fecd GS |
978 | } |
979 | else | |
a3b680e6 | 980 | err = "Odd number of elements in hash assignment"; |
f1f66076 | 981 | Perl_warner(aTHX_ packWARN(WARN_MISC), "%s", err); |
10c8fecd | 982 | } |
6d822dc4 | 983 | |
10c8fecd GS |
984 | } |
985 | } | |
986 | ||
a0d0e21e LW |
987 | PP(pp_aassign) |
988 | { | |
27da23d5 | 989 | dVAR; dSP; |
3280af22 NIS |
990 | SV **lastlelem = PL_stack_sp; |
991 | SV **lastrelem = PL_stack_base + POPMARK; | |
992 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
993 | SV **firstlelem = lastrelem + 1; |
994 | ||
eb578fdb KW |
995 | SV **relem; |
996 | SV **lelem; | |
a0d0e21e | 997 | |
eb578fdb KW |
998 | SV *sv; |
999 | AV *ary; | |
a0d0e21e | 1000 | |
54310121 | 1001 | I32 gimme; |
a0d0e21e | 1002 | HV *hash; |
c70927a6 | 1003 | SSize_t i; |
a0d0e21e | 1004 | int magic; |
88e2091b | 1005 | U32 lval = 0; |
5637b936 | 1006 | |
3280af22 | 1007 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
ca65944e | 1008 | gimme = GIMME_V; |
88e2091b RZ |
1009 | if (gimme == G_ARRAY) |
1010 | lval = PL_op->op_flags & OPf_MOD || LVRET; | |
a0d0e21e LW |
1011 | |
1012 | /* If there's a common identifier on both sides we have to take | |
1013 | * special care that assigning the identifier on the left doesn't | |
1014 | * clobber a value on the right that's used later in the list. | |
acdea6f0 | 1015 | * Don't bother if LHS is just an empty hash or array. |
a0d0e21e | 1016 | */ |
acdea6f0 DM |
1017 | |
1018 | if ( (PL_op->op_private & OPpASSIGN_COMMON) | |
1019 | && ( | |
1020 | firstlelem != lastlelem | |
1021 | || ! ((sv = *firstlelem)) | |
1022 | || SvMAGICAL(sv) | |
1023 | || ! (SvTYPE(sv) == SVt_PVAV || SvTYPE(sv) == SVt_PVHV) | |
1024 | || (SvTYPE(sv) == SVt_PVAV && AvFILL((AV*)sv) != -1) | |
1b95d04f | 1025 | || (SvTYPE(sv) == SVt_PVHV && HvUSEDKEYS((HV*)sv) != 0) |
acdea6f0 DM |
1026 | ) |
1027 | ) { | |
cc5e57d2 | 1028 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd | 1029 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
5d9574c1 | 1030 | if (LIKELY((sv = *relem))) { |
a1f49e72 | 1031 | TAINT_NOT; /* Each item is independent */ |
61e5f455 NC |
1032 | |
1033 | /* Dear TODO test in t/op/sort.t, I love you. | |
1034 | (It's relying on a panic, not a "semi-panic" from newSVsv() | |
1035 | and then an assertion failure below.) */ | |
5d9574c1 | 1036 | if (UNLIKELY(SvIS_FREED(sv))) { |
61e5f455 NC |
1037 | Perl_croak(aTHX_ "panic: attempt to copy freed scalar %p", |
1038 | (void*)sv); | |
1039 | } | |
2203fb5a FC |
1040 | /* Not newSVsv(), as it does not allow copy-on-write, |
1041 | resulting in wasteful copies. We need a second copy of | |
1042 | a temp here, hence the SV_NOSTEAL. */ | |
1043 | *relem = sv_mortalcopy_flags(sv,SV_GMAGIC|SV_DO_COW_SVSETSV | |
1044 | |SV_NOSTEAL); | |
a1f49e72 | 1045 | } |
10c8fecd | 1046 | } |
a0d0e21e LW |
1047 | } |
1048 | ||
1049 | relem = firstrelem; | |
1050 | lelem = firstlelem; | |
4608196e RGS |
1051 | ary = NULL; |
1052 | hash = NULL; | |
10c8fecd | 1053 | |
5d9574c1 | 1054 | while (LIKELY(lelem <= lastlelem)) { |
bbce6d69 | 1055 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
1056 | sv = *lelem++; |
1057 | switch (SvTYPE(sv)) { | |
1058 | case SVt_PVAV: | |
60edcf09 | 1059 | ary = MUTABLE_AV(sv); |
748a9306 | 1060 | magic = SvMAGICAL(ary) != 0; |
60edcf09 FC |
1061 | ENTER; |
1062 | SAVEFREESV(SvREFCNT_inc_simple_NN(sv)); | |
a0d0e21e | 1063 | av_clear(ary); |
7e42bd57 | 1064 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1065 | i = 0; |
1066 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1067 | SV **didstore; |
5d9574c1 | 1068 | if (LIKELY(*relem)) |
ce0d59fd | 1069 | SvGETMAGIC(*relem); /* before newSV, in case it dies */ |
18024492 FC |
1070 | sv = newSV(0); |
1071 | sv_setsv_nomg(sv, *relem); | |
a0d0e21e | 1072 | *(relem++) = sv; |
5117ca91 GS |
1073 | didstore = av_store(ary,i++,sv); |
1074 | if (magic) { | |
18024492 FC |
1075 | if (!didstore) |
1076 | sv_2mortal(sv); | |
8ef24240 | 1077 | if (SvSMAGICAL(sv)) |
fb73857a | 1078 | mg_set(sv); |
5117ca91 | 1079 | } |
bbce6d69 | 1080 | TAINT_NOT; |
a0d0e21e | 1081 | } |
5d9574c1 | 1082 | if (UNLIKELY(PL_delaymagic & DM_ARRAY_ISA)) |
ad64d0ec | 1083 | SvSETMAGIC(MUTABLE_SV(ary)); |
60edcf09 | 1084 | LEAVE; |
a0d0e21e | 1085 | break; |
10c8fecd | 1086 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e | 1087 | SV *tmpstr; |
1c4ea384 RZ |
1088 | int odd; |
1089 | int duplicates = 0; | |
45960564 | 1090 | SV** topelem = relem; |
1c4ea384 | 1091 | SV **firsthashrelem = relem; |
a0d0e21e | 1092 | |
60edcf09 | 1093 | hash = MUTABLE_HV(sv); |
748a9306 | 1094 | magic = SvMAGICAL(hash) != 0; |
1c4ea384 RZ |
1095 | |
1096 | odd = ((lastrelem - firsthashrelem)&1)? 0 : 1; | |
5d9574c1 | 1097 | if (UNLIKELY(odd)) { |
fb8f4cf8 | 1098 | do_oddball(lastrelem, firsthashrelem); |
1d2b3927 HS |
1099 | /* we have firstlelem to reuse, it's not needed anymore |
1100 | */ | |
1c4ea384 RZ |
1101 | *(lastrelem+1) = &PL_sv_undef; |
1102 | } | |
1103 | ||
60edcf09 FC |
1104 | ENTER; |
1105 | SAVEFREESV(SvREFCNT_inc_simple_NN(sv)); | |
a0d0e21e | 1106 | hv_clear(hash); |
5d9574c1 | 1107 | while (LIKELY(relem < lastrelem+odd)) { /* gobble up all the rest */ |
5117ca91 | 1108 | HE *didstore; |
1c4ea384 | 1109 | assert(*relem); |
632b9d6f FC |
1110 | /* Copy the key if aassign is called in lvalue context, |
1111 | to avoid having the next op modify our rhs. Copy | |
1112 | it also if it is gmagical, lest it make the | |
1113 | hv_store_ent call below croak, leaking the value. */ | |
1114 | sv = lval || SvGMAGICAL(*relem) | |
1115 | ? sv_mortalcopy(*relem) | |
1116 | : *relem; | |
45960564 | 1117 | relem++; |
1c4ea384 | 1118 | assert(*relem); |
632b9d6f FC |
1119 | SvGETMAGIC(*relem); |
1120 | tmpstr = newSV(0); | |
1121 | sv_setsv_nomg(tmpstr,*relem++); /* value */ | |
a88bf2bc | 1122 | if (gimme == G_ARRAY) { |
45960564 DM |
1123 | if (hv_exists_ent(hash, sv, 0)) |
1124 | /* key overwrites an existing entry */ | |
1125 | duplicates += 2; | |
a88bf2bc | 1126 | else { |
45960564 | 1127 | /* copy element back: possibly to an earlier |
1d2b3927 HS |
1128 | * stack location if we encountered dups earlier, |
1129 | * possibly to a later stack location if odd */ | |
45960564 DM |
1130 | *topelem++ = sv; |
1131 | *topelem++ = tmpstr; | |
1132 | } | |
1133 | } | |
5117ca91 | 1134 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
632b9d6f FC |
1135 | if (magic) { |
1136 | if (!didstore) sv_2mortal(tmpstr); | |
1137 | SvSETMAGIC(tmpstr); | |
1138 | } | |
bbce6d69 | 1139 | TAINT_NOT; |
8e07c86e | 1140 | } |
60edcf09 | 1141 | LEAVE; |
1c4ea384 RZ |
1142 | if (duplicates && gimme == G_ARRAY) { |
1143 | /* at this point we have removed the duplicate key/value | |
1144 | * pairs from the stack, but the remaining values may be | |
1145 | * wrong; i.e. with (a 1 a 2 b 3) on the stack we've removed | |
1146 | * the (a 2), but the stack now probably contains | |
1147 | * (a <freed> b 3), because { hv_save(a,1); hv_save(a,2) } | |
1148 | * obliterates the earlier key. So refresh all values. */ | |
1149 | lastrelem -= duplicates; | |
1150 | relem = firsthashrelem; | |
1151 | while (relem < lastrelem+odd) { | |
1152 | HE *he; | |
1153 | he = hv_fetch_ent(hash, *relem++, 0, 0); | |
1154 | *relem++ = (he ? HeVAL(he) : &PL_sv_undef); | |
1155 | } | |
1156 | } | |
1157 | if (odd && gimme == G_ARRAY) lastrelem++; | |
a0d0e21e LW |
1158 | } |
1159 | break; | |
1160 | default: | |
6fc92669 GS |
1161 | if (SvIMMORTAL(sv)) { |
1162 | if (relem <= lastrelem) | |
1163 | relem++; | |
1164 | break; | |
a0d0e21e LW |
1165 | } |
1166 | if (relem <= lastrelem) { | |
5d9574c1 | 1167 | if (UNLIKELY( |
1c70fb82 FC |
1168 | SvTEMP(sv) && !SvSMAGICAL(sv) && SvREFCNT(sv) == 1 && |
1169 | (!isGV_with_GP(sv) || SvFAKE(sv)) && ckWARN(WARN_MISC) | |
5d9574c1 | 1170 | )) |
1c70fb82 FC |
1171 | Perl_warner(aTHX_ |
1172 | packWARN(WARN_MISC), | |
1173 | "Useless assignment to a temporary" | |
1174 | ); | |
a0d0e21e LW |
1175 | sv_setsv(sv, *relem); |
1176 | *(relem++) = sv; | |
1177 | } | |
1178 | else | |
3280af22 | 1179 | sv_setsv(sv, &PL_sv_undef); |
8ef24240 | 1180 | SvSETMAGIC(sv); |
a0d0e21e LW |
1181 | break; |
1182 | } | |
1183 | } | |
5d9574c1 | 1184 | if (UNLIKELY(PL_delaymagic & ~DM_DELAY)) { |
985213f2 | 1185 | /* Will be used to set PL_tainting below */ |
dfff4baf BF |
1186 | Uid_t tmp_uid = PerlProc_getuid(); |
1187 | Uid_t tmp_euid = PerlProc_geteuid(); | |
1188 | Gid_t tmp_gid = PerlProc_getgid(); | |
1189 | Gid_t tmp_egid = PerlProc_getegid(); | |
985213f2 | 1190 | |
b469f1e0 | 1191 | /* XXX $> et al currently silently ignore failures */ |
3280af22 | 1192 | if (PL_delaymagic & DM_UID) { |
a0d0e21e | 1193 | #ifdef HAS_SETRESUID |
b469f1e0 JH |
1194 | PERL_UNUSED_RESULT( |
1195 | setresuid((PL_delaymagic & DM_RUID) ? PL_delaymagic_uid : (Uid_t)-1, | |
1196 | (PL_delaymagic & DM_EUID) ? PL_delaymagic_euid : (Uid_t)-1, | |
1197 | (Uid_t)-1)); | |
56febc5e AD |
1198 | #else |
1199 | # ifdef HAS_SETREUID | |
b469f1e0 JH |
1200 | PERL_UNUSED_RESULT( |
1201 | setreuid((PL_delaymagic & DM_RUID) ? PL_delaymagic_uid : (Uid_t)-1, | |
1202 | (PL_delaymagic & DM_EUID) ? PL_delaymagic_euid : (Uid_t)-1)); | |
56febc5e AD |
1203 | # else |
1204 | # ifdef HAS_SETRUID | |
b28d0864 | 1205 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
b469f1e0 | 1206 | PERL_UNUSED_RESULT(setruid(PL_delaymagic_uid)); |
b28d0864 | 1207 | PL_delaymagic &= ~DM_RUID; |
a0d0e21e | 1208 | } |
56febc5e AD |
1209 | # endif /* HAS_SETRUID */ |
1210 | # ifdef HAS_SETEUID | |
b28d0864 | 1211 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
b469f1e0 | 1212 | PERL_UNUSED_RESULT(seteuid(PL_delaymagic_euid)); |
b28d0864 | 1213 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e | 1214 | } |
56febc5e | 1215 | # endif /* HAS_SETEUID */ |
b28d0864 | 1216 | if (PL_delaymagic & DM_UID) { |
985213f2 | 1217 | if (PL_delaymagic_uid != PL_delaymagic_euid) |
cea2e8a9 | 1218 | DIE(aTHX_ "No setreuid available"); |
b469f1e0 | 1219 | PERL_UNUSED_RESULT(PerlProc_setuid(PL_delaymagic_uid)); |
a0d0e21e | 1220 | } |
56febc5e AD |
1221 | # endif /* HAS_SETREUID */ |
1222 | #endif /* HAS_SETRESUID */ | |
04783dc7 | 1223 | |
985213f2 AB |
1224 | tmp_uid = PerlProc_getuid(); |
1225 | tmp_euid = PerlProc_geteuid(); | |
a0d0e21e | 1226 | } |
b469f1e0 | 1227 | /* XXX $> et al currently silently ignore failures */ |
3280af22 | 1228 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1229 | #ifdef HAS_SETRESGID |
b469f1e0 JH |
1230 | PERL_UNUSED_RESULT( |
1231 | setresgid((PL_delaymagic & DM_RGID) ? PL_delaymagic_gid : (Gid_t)-1, | |
1232 | (PL_delaymagic & DM_EGID) ? PL_delaymagic_egid : (Gid_t)-1, | |
1233 | (Gid_t)-1)); | |
56febc5e AD |
1234 | #else |
1235 | # ifdef HAS_SETREGID | |
b469f1e0 JH |
1236 | PERL_UNUSED_RESULT( |
1237 | setregid((PL_delaymagic & DM_RGID) ? PL_delaymagic_gid : (Gid_t)-1, | |
1238 | (PL_delaymagic & DM_EGID) ? PL_delaymagic_egid : (Gid_t)-1)); | |
56febc5e AD |
1239 | # else |
1240 | # ifdef HAS_SETRGID | |
b28d0864 | 1241 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
b469f1e0 | 1242 | PERL_UNUSED_RESULT(setrgid(PL_delaymagic_gid)); |
b28d0864 | 1243 | PL_delaymagic &= ~DM_RGID; |
a0d0e21e | 1244 | } |
56febc5e AD |
1245 | # endif /* HAS_SETRGID */ |
1246 | # ifdef HAS_SETEGID | |
b28d0864 | 1247 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
b469f1e0 | 1248 | PERL_UNUSED_RESULT(setegid(PL_delaymagic_egid)); |
b28d0864 | 1249 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e | 1250 | } |
56febc5e | 1251 | # endif /* HAS_SETEGID */ |
b28d0864 | 1252 | if (PL_delaymagic & DM_GID) { |
985213f2 | 1253 | if (PL_delaymagic_gid != PL_delaymagic_egid) |
cea2e8a9 | 1254 | DIE(aTHX_ "No setregid available"); |
b469f1e0 | 1255 | PERL_UNUSED_RESULT(PerlProc_setgid(PL_delaymagic_gid)); |
a0d0e21e | 1256 | } |
56febc5e AD |
1257 | # endif /* HAS_SETREGID */ |
1258 | #endif /* HAS_SETRESGID */ | |
04783dc7 | 1259 | |
985213f2 AB |
1260 | tmp_gid = PerlProc_getgid(); |
1261 | tmp_egid = PerlProc_getegid(); | |
a0d0e21e | 1262 | } |
284167a5 | 1263 | TAINTING_set( TAINTING_get | (tmp_uid && (tmp_euid != tmp_uid || tmp_egid != tmp_gid)) ); |
9a9b5ec9 DM |
1264 | #ifdef NO_TAINT_SUPPORT |
1265 | PERL_UNUSED_VAR(tmp_uid); | |
1266 | PERL_UNUSED_VAR(tmp_euid); | |
1267 | PERL_UNUSED_VAR(tmp_gid); | |
1268 | PERL_UNUSED_VAR(tmp_egid); | |
1269 | #endif | |
a0d0e21e | 1270 | } |
3280af22 | 1271 | PL_delaymagic = 0; |
54310121 | 1272 | |
54310121 | 1273 | if (gimme == G_VOID) |
1274 | SP = firstrelem - 1; | |
1275 | else if (gimme == G_SCALAR) { | |
1276 | dTARGET; | |
1277 | SP = firstrelem; | |
231cbeb2 | 1278 | SETi(lastrelem - firstrelem + 1); |
54310121 | 1279 | } |
1280 | else { | |
1c4ea384 | 1281 | if (ary || hash) |
1d2b3927 HS |
1282 | /* note that in this case *firstlelem may have been overwritten |
1283 | by sv_undef in the odd hash case */ | |
a0d0e21e | 1284 | SP = lastrelem; |
1c4ea384 | 1285 | else { |
a0d0e21e | 1286 | SP = firstrelem + (lastlelem - firstlelem); |
1c4ea384 RZ |
1287 | lelem = firstlelem + (relem - firstrelem); |
1288 | while (relem <= SP) | |
1289 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; | |
1290 | } | |
a0d0e21e | 1291 | } |
08aeb9f7 | 1292 | |
54310121 | 1293 | RETURN; |
a0d0e21e LW |
1294 | } |
1295 | ||
8782bef2 GB |
1296 | PP(pp_qr) |
1297 | { | |
97aff369 | 1298 | dVAR; dSP; |
eb578fdb | 1299 | PMOP * const pm = cPMOP; |
fe578d7f | 1300 | REGEXP * rx = PM_GETRE(pm); |
10599a69 | 1301 | SV * const pkg = rx ? CALLREG_PACKAGE(rx) : NULL; |
c4420975 | 1302 | SV * const rv = sv_newmortal(); |
d63c20f2 DM |
1303 | CV **cvp; |
1304 | CV *cv; | |
288b8c02 NC |
1305 | |
1306 | SvUPGRADE(rv, SVt_IV); | |
c2123ae3 NC |
1307 | /* For a subroutine describing itself as "This is a hacky workaround" I'm |
1308 | loathe to use it here, but it seems to be the right fix. Or close. | |
1309 | The key part appears to be that it's essential for pp_qr to return a new | |
1310 | object (SV), which implies that there needs to be an effective way to | |
1311 | generate a new SV from the existing SV that is pre-compiled in the | |
1312 | optree. */ | |
1313 | SvRV_set(rv, MUTABLE_SV(reg_temp_copy(NULL, rx))); | |
288b8c02 NC |
1314 | SvROK_on(rv); |
1315 | ||
8d919b0a | 1316 | cvp = &( ReANY((REGEXP *)SvRV(rv))->qr_anoncv); |
5d9574c1 | 1317 | if (UNLIKELY((cv = *cvp) && CvCLONE(*cvp))) { |
d63c20f2 | 1318 | *cvp = cv_clone(cv); |
fc2b2dca | 1319 | SvREFCNT_dec_NN(cv); |
d63c20f2 DM |
1320 | } |
1321 | ||
288b8c02 | 1322 | if (pkg) { |
f815daf2 | 1323 | HV *const stash = gv_stashsv(pkg, GV_ADD); |
fc2b2dca | 1324 | SvREFCNT_dec_NN(pkg); |
288b8c02 NC |
1325 | (void)sv_bless(rv, stash); |
1326 | } | |
1327 | ||
5d9574c1 | 1328 | if (UNLIKELY(RX_ISTAINTED(rx))) { |
e08e52cf | 1329 | SvTAINTED_on(rv); |
9274aefd DM |
1330 | SvTAINTED_on(SvRV(rv)); |
1331 | } | |
c8c13c22 JB |
1332 | XPUSHs(rv); |
1333 | RETURN; | |
8782bef2 GB |
1334 | } |
1335 | ||
a0d0e21e LW |
1336 | PP(pp_match) |
1337 | { | |
97aff369 | 1338 | dVAR; dSP; dTARG; |
eb578fdb | 1339 | PMOP *pm = cPMOP; |
d65afb4b | 1340 | PMOP *dynpm = pm; |
eb578fdb | 1341 | const char *s; |
5c144d81 | 1342 | const char *strend; |
99a90e59 | 1343 | SSize_t curpos = 0; /* initial pos() or current $+[0] */ |
a0d0e21e | 1344 | I32 global; |
7fadf4a7 | 1345 | U8 r_flags = 0; |
5c144d81 | 1346 | const char *truebase; /* Start of string */ |
eb578fdb | 1347 | REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1348 | bool rxtainted; |
a3b680e6 | 1349 | const I32 gimme = GIMME; |
a0d0e21e | 1350 | STRLEN len; |
a3b680e6 | 1351 | const I32 oldsave = PL_savestack_ix; |
e60df1fa | 1352 | I32 had_zerolen = 0; |
b1422d62 | 1353 | MAGIC *mg = NULL; |
a0d0e21e | 1354 | |
533c011a | 1355 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1356 | TARG = POPs; |
59f00321 RGS |
1357 | else if (PL_op->op_private & OPpTARGET_MY) |
1358 | GETTARGET; | |
a0d0e21e | 1359 | else { |
54b9620d | 1360 | TARG = DEFSV; |
a0d0e21e LW |
1361 | EXTEND(SP,1); |
1362 | } | |
d9f424b2 | 1363 | |
c277df42 | 1364 | PUTBACK; /* EVAL blocks need stack_sp. */ |
69dc4b30 FC |
1365 | /* Skip get-magic if this is a qr// clone, because regcomp has |
1366 | already done it. */ | |
f1d31338 | 1367 | truebase = ReANY(rx)->mother_re |
69dc4b30 FC |
1368 | ? SvPV_nomg_const(TARG, len) |
1369 | : SvPV_const(TARG, len); | |
f1d31338 | 1370 | if (!truebase) |
2269b42e | 1371 | DIE(aTHX_ "panic: pp_match"); |
f1d31338 | 1372 | strend = truebase + len; |
284167a5 S |
1373 | rxtainted = (RX_ISTAINTED(rx) || |
1374 | (TAINT_get && (pm->op_pmflags & PMf_RETAINT))); | |
9212bbba | 1375 | TAINT_NOT; |
a0d0e21e | 1376 | |
6c864ec2 | 1377 | /* We need to know this in case we fail out early - pos() must be reset */ |
de0df3c0 MH |
1378 | global = dynpm->op_pmflags & PMf_GLOBAL; |
1379 | ||
d65afb4b | 1380 | /* PMdf_USED is set after a ?? matches once */ |
c737faaf YO |
1381 | if ( |
1382 | #ifdef USE_ITHREADS | |
1383 | SvREADONLY(PL_regex_pad[pm->op_pmoffset]) | |
1384 | #else | |
1385 | pm->op_pmflags & PMf_USED | |
1386 | #endif | |
1387 | ) { | |
e5dc5375 | 1388 | DEBUG_r(PerlIO_printf(Perl_debug_log, "?? already matched once")); |
de0df3c0 | 1389 | goto nope; |
a0d0e21e LW |
1390 | } |
1391 | ||
7e313637 FC |
1392 | /* empty pattern special-cased to use last successful pattern if |
1393 | possible, except for qr// */ | |
8d919b0a | 1394 | if (!ReANY(rx)->mother_re && !RX_PRELEN(rx) |
7e313637 | 1395 | && PL_curpm) { |
3280af22 | 1396 | pm = PL_curpm; |
aaa362c4 | 1397 | rx = PM_GETRE(pm); |
a0d0e21e | 1398 | } |
d65afb4b | 1399 | |
389ecb56 | 1400 | if (RX_MINLEN(rx) >= 0 && (STRLEN)RX_MINLEN(rx) > len) { |
75d43e96 FC |
1401 | DEBUG_r(PerlIO_printf(Perl_debug_log, "String shorter than min possible regex match (%" |
1402 | UVuf" < %"IVdf")\n", | |
1403 | (UV)len, (IV)RX_MINLEN(rx))); | |
de0df3c0 | 1404 | goto nope; |
e5dc5375 | 1405 | } |
c277df42 | 1406 | |
8ef97b0e | 1407 | /* get pos() if //g */ |
de0df3c0 | 1408 | if (global) { |
b1422d62 | 1409 | mg = mg_find_mglob(TARG); |
8ef97b0e | 1410 | if (mg && mg->mg_len >= 0) { |
25fdce4a | 1411 | curpos = MgBYTEPOS(mg, TARG, truebase, len); |
8ef97b0e DM |
1412 | /* last time pos() was set, it was zero-length match */ |
1413 | if (mg->mg_flags & MGf_MINMATCH) | |
1414 | had_zerolen = 1; | |
1415 | } | |
a0d0e21e | 1416 | } |
8ef97b0e | 1417 | |
6e240d0b | 1418 | #ifdef PERL_SAWAMPERSAND |
a41aa44d | 1419 | if ( RX_NPARENS(rx) |
6502e081 | 1420 | || PL_sawampersand |
6502e081 | 1421 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY)) |
5b0e71e9 | 1422 | || (dynpm->op_pmflags & PMf_KEEPCOPY) |
6e240d0b FC |
1423 | ) |
1424 | #endif | |
1425 | { | |
6502e081 DM |
1426 | r_flags |= (REXEC_COPY_STR|REXEC_COPY_SKIP_PRE); |
1427 | /* in @a =~ /(.)/g, we iterate multiple times, but copy the buffer | |
1428 | * only on the first iteration. Therefore we need to copy $' as well | |
1429 | * as $&, to make the rest of the string available for captures in | |
1430 | * subsequent iterations */ | |
1431 | if (! (global && gimme == G_ARRAY)) | |
1432 | r_flags |= REXEC_COPY_SKIP_POST; | |
1433 | }; | |
5b0e71e9 DM |
1434 | #ifdef PERL_SAWAMPERSAND |
1435 | if (dynpm->op_pmflags & PMf_KEEPCOPY) | |
1436 | /* handle KEEPCOPY in pmop but not rx, eg $r=qr/a/; /$r/p */ | |
1437 | r_flags &= ~(REXEC_COPY_SKIP_PRE|REXEC_COPY_SKIP_POST); | |
1438 | #endif | |
22e551b9 | 1439 | |
f1d31338 DM |
1440 | s = truebase; |
1441 | ||
d7be1480 | 1442 | play_it_again: |
985afbc1 | 1443 | if (global) |
03c83e26 | 1444 | s = truebase + curpos; |
f722798b | 1445 | |
77da2310 | 1446 | if (!CALLREGEXEC(rx, (char*)s, (char *)strend, (char*)truebase, |
03c83e26 | 1447 | had_zerolen, TARG, NULL, r_flags)) |
03b6c93d | 1448 | goto nope; |
77da2310 NC |
1449 | |
1450 | PL_curpm = pm; | |
985afbc1 | 1451 | if (dynpm->op_pmflags & PMf_ONCE) |
c737faaf | 1452 | #ifdef USE_ITHREADS |
77da2310 | 1453 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); |
c737faaf | 1454 | #else |
77da2310 | 1455 | dynpm->op_pmflags |= PMf_USED; |
c737faaf | 1456 | #endif |
a0d0e21e | 1457 | |
72311751 GS |
1458 | if (rxtainted) |
1459 | RX_MATCH_TAINTED_on(rx); | |
1460 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
35c2ccc3 DM |
1461 | |
1462 | /* update pos */ | |
1463 | ||
1464 | if (global && (gimme != G_ARRAY || (dynpm->op_pmflags & PMf_CONTINUE))) { | |
b1422d62 | 1465 | if (!mg) |
35c2ccc3 | 1466 | mg = sv_magicext_mglob(TARG); |
25fdce4a | 1467 | MgBYTEPOS_set(mg, TARG, truebase, RX_OFFS(rx)[0].end); |
adf51885 DM |
1468 | if (RX_ZERO_LEN(rx)) |
1469 | mg->mg_flags |= MGf_MINMATCH; | |
1470 | else | |
1471 | mg->mg_flags &= ~MGf_MINMATCH; | |
35c2ccc3 DM |
1472 | } |
1473 | ||
bf9dff51 DM |
1474 | if ((!RX_NPARENS(rx) && !global) || gimme != G_ARRAY) { |
1475 | LEAVE_SCOPE(oldsave); | |
1476 | RETPUSHYES; | |
1477 | } | |
1478 | ||
88ab22af DM |
1479 | /* push captures on stack */ |
1480 | ||
bf9dff51 | 1481 | { |
07bc277f | 1482 | const I32 nparens = RX_NPARENS(rx); |
a3b680e6 | 1483 | I32 i = (global && !nparens) ? 1 : 0; |
a0d0e21e | 1484 | |
c277df42 | 1485 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1486 | EXTEND(SP, nparens + i); |
1487 | EXTEND_MORTAL(nparens + i); | |
1488 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e | 1489 | PUSHs(sv_newmortal()); |
5d9574c1 DM |
1490 | if (LIKELY((RX_OFFS(rx)[i].start != -1) |
1491 | && RX_OFFS(rx)[i].end != -1 )) | |
1492 | { | |
07bc277f | 1493 | const I32 len = RX_OFFS(rx)[i].end - RX_OFFS(rx)[i].start; |
f1d31338 | 1494 | const char * const s = RX_OFFS(rx)[i].start + truebase; |
5d9574c1 DM |
1495 | if (UNLIKELY(RX_OFFS(rx)[i].end < 0 || RX_OFFS(rx)[i].start < 0 |
1496 | || len < 0 || len > strend - s)) | |
5637ef5b NC |
1497 | DIE(aTHX_ "panic: pp_match start/end pointers, i=%ld, " |
1498 | "start=%ld, end=%ld, s=%p, strend=%p, len=%"UVuf, | |
1499 | (long) i, (long) RX_OFFS(rx)[i].start, | |
1500 | (long)RX_OFFS(rx)[i].end, s, strend, (UV) len); | |
a0d0e21e | 1501 | sv_setpvn(*SP, s, len); |
cce850e4 | 1502 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1503 | SvUTF8_on(*SP); |
a0d0e21e LW |
1504 | } |
1505 | } | |
1506 | if (global) { | |
0e0b3e82 | 1507 | curpos = (UV)RX_OFFS(rx)[0].end; |
03c83e26 | 1508 | had_zerolen = RX_ZERO_LEN(rx); |
c277df42 | 1509 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1510 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1511 | goto play_it_again; |
1512 | } | |
4633a7c4 | 1513 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1514 | RETURN; |
1515 | } | |
88ab22af | 1516 | /* NOTREACHED */ |
a0d0e21e LW |
1517 | |
1518 | nope: | |
d65afb4b | 1519 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
b1422d62 DM |
1520 | if (!mg) |
1521 | mg = mg_find_mglob(TARG); | |
1522 | if (mg) | |
1523 | mg->mg_len = -1; | |
a0d0e21e | 1524 | } |
4633a7c4 | 1525 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1526 | if (gimme == G_ARRAY) |
1527 | RETURN; | |
1528 | RETPUSHNO; | |
1529 | } | |
1530 | ||
1531 | OP * | |
864dbfa3 | 1532 | Perl_do_readline(pTHX) |
a0d0e21e | 1533 | { |
27da23d5 | 1534 | dVAR; dSP; dTARGETSTACKED; |
eb578fdb | 1535 | SV *sv; |
a0d0e21e LW |
1536 | STRLEN tmplen = 0; |
1537 | STRLEN offset; | |
760ac839 | 1538 | PerlIO *fp; |
eb578fdb KW |
1539 | IO * const io = GvIO(PL_last_in_gv); |
1540 | const I32 type = PL_op->op_type; | |
a3b680e6 | 1541 | const I32 gimme = GIMME_V; |
a0d0e21e | 1542 | |
6136c704 | 1543 | if (io) { |
50db69d8 | 1544 | const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar); |
6136c704 | 1545 | if (mg) { |
3e0cb5de | 1546 | Perl_tied_method(aTHX_ SV_CONST(READLINE), SP, MUTABLE_SV(io), mg, gimme, 0); |
6136c704 | 1547 | if (gimme == G_SCALAR) { |
50db69d8 NC |
1548 | SPAGAIN; |
1549 | SvSetSV_nosteal(TARG, TOPs); | |
1550 | SETTARG; | |
6136c704 | 1551 | } |
50db69d8 | 1552 | return NORMAL; |
0b7c7b4f | 1553 | } |
e79b0511 | 1554 | } |
4608196e | 1555 | fp = NULL; |
a0d0e21e LW |
1556 | if (io) { |
1557 | fp = IoIFP(io); | |
1558 | if (!fp) { | |
1559 | if (IoFLAGS(io) & IOf_ARGV) { | |
1560 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1561 | IoLINES(io) = 0; |
b9f2b683 | 1562 | if (av_tindex(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1563 | IoFLAGS(io) &= ~IOf_START; |
d5eb9a46 | 1564 | do_open6(PL_last_in_gv, "-", 1, NULL, NULL, 0); |
4bac9ae4 | 1565 | SvTAINTED_off(GvSVn(PL_last_in_gv)); /* previous tainting irrelevant */ |
76f68e9b | 1566 | sv_setpvs(GvSVn(PL_last_in_gv), "-"); |
3280af22 | 1567 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d GS |
1568 | fp = IoIFP(io); |
1569 | goto have_fp; | |
a0d0e21e LW |
1570 | } |
1571 | } | |
3280af22 | 1572 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1573 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1574 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1575 | } |
1576 | } | |
0d44d22b NC |
1577 | else if (type == OP_GLOB) |
1578 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1579 | } |
1580 | else if (type == OP_GLOB) | |
1581 | SP--; | |
7716c5c5 | 1582 | else if (IoTYPE(io) == IoTYPE_WRONLY) { |
a5390457 | 1583 | report_wrongway_fh(PL_last_in_gv, '>'); |
a00b5bd3 | 1584 | } |
a0d0e21e LW |
1585 | } |
1586 | if (!fp) { | |
041457d9 | 1587 | if ((!io || !(IoFLAGS(io) & IOf_START)) |
de7dabb6 TC |
1588 | && ckWARN(WARN_CLOSED) |
1589 | && type != OP_GLOB) | |
041457d9 | 1590 | { |
de7dabb6 | 1591 | report_evil_fh(PL_last_in_gv); |
3f4520fe | 1592 | } |
54310121 | 1593 | if (gimme == G_SCALAR) { |
79628082 | 1594 | /* undef TARG, and push that undefined value */ |
ba92458f AE |
1595 | if (type != OP_RCATLINE) { |
1596 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1597 | SvOK_off(TARG); |
ba92458f | 1598 | } |
a0d0e21e LW |
1599 | PUSHTARG; |
1600 | } | |
1601 | RETURN; | |
1602 | } | |
a2008d6d | 1603 | have_fp: |
54310121 | 1604 | if (gimme == G_SCALAR) { |
a0d0e21e | 1605 | sv = TARG; |
0f722b55 RGS |
1606 | if (type == OP_RCATLINE && SvGMAGICAL(sv)) |
1607 | mg_get(sv); | |
48de12d9 RGS |
1608 | if (SvROK(sv)) { |
1609 | if (type == OP_RCATLINE) | |
5668452f | 1610 | SvPV_force_nomg_nolen(sv); |
48de12d9 RGS |
1611 | else |
1612 | sv_unref(sv); | |
1613 | } | |
f7877b28 | 1614 | else if (isGV_with_GP(sv)) { |
5668452f | 1615 | SvPV_force_nomg_nolen(sv); |
f7877b28 | 1616 | } |
862a34c6 | 1617 | SvUPGRADE(sv, SVt_PV); |
a0d0e21e | 1618 | tmplen = SvLEN(sv); /* remember if already alloced */ |
e3918bb7 | 1619 | if (!tmplen && !SvREADONLY(sv) && !SvIsCOW(sv)) { |
f72e8700 JJ |
1620 | /* try short-buffering it. Please update t/op/readline.t |
1621 | * if you change the growth length. | |
1622 | */ | |
1623 | Sv_Grow(sv, 80); | |
1624 | } | |
2b5e58c4 AMS |
1625 | offset = 0; |
1626 | if (type == OP_RCATLINE && SvOK(sv)) { | |
1627 | if (!SvPOK(sv)) { | |
5668452f | 1628 | SvPV_force_nomg_nolen(sv); |
2b5e58c4 | 1629 | } |
a0d0e21e | 1630 | offset = SvCUR(sv); |
2b5e58c4 | 1631 | } |
a0d0e21e | 1632 | } |
54310121 | 1633 | else { |
561b68a9 | 1634 | sv = sv_2mortal(newSV(80)); |
54310121 | 1635 | offset = 0; |
1636 | } | |
fbad3eb5 | 1637 | |
3887d568 AP |
1638 | /* This should not be marked tainted if the fp is marked clean */ |
1639 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1640 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1641 | TAINT; \ | |
1642 | SvTAINTED_on(sv); \ | |
1643 | } | |
1644 | ||
684bef36 | 1645 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1646 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1647 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1648 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1649 | |
a0d0e21e | 1650 | for (;;) { |
09e8efcc | 1651 | PUTBACK; |
fbad3eb5 | 1652 | if (!sv_gets(sv, fp, offset) |
2d726892 TF |
1653 | && (type == OP_GLOB |
1654 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
1655 | || PerlIO_error(fp))) | |
fbad3eb5 | 1656 | { |
760ac839 | 1657 | PerlIO_clearerr(fp); |
a0d0e21e | 1658 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1659 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1660 | if (fp) |
1661 | continue; | |
3280af22 | 1662 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1663 | } |
1664 | else if (type == OP_GLOB) { | |
a2a5de95 NC |
1665 | if (!do_close(PL_last_in_gv, FALSE)) { |
1666 | Perl_ck_warner(aTHX_ packWARN(WARN_GLOB), | |
1667 | "glob failed (child exited with status %d%s)", | |
1668 | (int)(STATUS_CURRENT >> 8), | |
1669 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); | |
4eb79ab5 | 1670 | } |
a0d0e21e | 1671 | } |
54310121 | 1672 | if (gimme == G_SCALAR) { |
ba92458f AE |
1673 | if (type != OP_RCATLINE) { |
1674 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1675 | SvOK_off(TARG); |
ba92458f | 1676 | } |
09e8efcc | 1677 | SPAGAIN; |
a0d0e21e LW |
1678 | PUSHTARG; |
1679 | } | |
3887d568 | 1680 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1681 | RETURN; |
1682 | } | |
3887d568 | 1683 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1684 | IoLINES(io)++; |
b9fee9ba | 1685 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1686 | SvSETMAGIC(sv); |
09e8efcc | 1687 | SPAGAIN; |
a0d0e21e | 1688 | XPUSHs(sv); |
a0d0e21e | 1689 | if (type == OP_GLOB) { |
349d4f2f | 1690 | const char *t1; |
a0d0e21e | 1691 | |
3280af22 | 1692 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
6136c704 | 1693 | char * const tmps = SvEND(sv) - 1; |
aa07b2f6 | 1694 | if (*tmps == *SvPVX_const(PL_rs)) { |
c07a80fd | 1695 | *tmps = '\0'; |
b162af07 | 1696 | SvCUR_set(sv, SvCUR(sv) - 1); |
c07a80fd | 1697 | } |
1698 | } | |
349d4f2f | 1699 | for (t1 = SvPVX_const(sv); *t1; t1++) |
b51c3e77 CB |
1700 | #ifdef __VMS |
1701 | if (strchr("*%?", *t1)) | |
1702 | #else | |
7ad1e72d | 1703 | if (strchr("$&*(){}[]'\";\\|?<>~`", *t1)) |
b51c3e77 | 1704 | #endif |
a0d0e21e | 1705 | break; |
349d4f2f | 1706 | if (*t1 && PerlLIO_lstat(SvPVX_const(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1707 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1708 | continue; | |
1709 | } | |
2d79bf7f | 1710 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
d4c19fe8 AL |
1711 | if (ckWARN(WARN_UTF8)) { |
1712 | const U8 * const s = (const U8*)SvPVX_const(sv) + offset; | |
1713 | const STRLEN len = SvCUR(sv) - offset; | |
1714 | const U8 *f; | |
1715 | ||
1716 | if (!is_utf8_string_loc(s, len, &f)) | |
1717 | /* Emulate :encoding(utf8) warning in the same case. */ | |
1718 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
1719 | "utf8 \"\\x%02X\" does not map to Unicode", | |
1720 | f < (U8*)SvEND(sv) ? *f : 0); | |
1721 | } | |
a0d0e21e | 1722 | } |
54310121 | 1723 | if (gimme == G_ARRAY) { |
a0d0e21e | 1724 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1da4ca5f | 1725 | SvPV_shrink_to_cur(sv); |
a0d0e21e | 1726 | } |
561b68a9 | 1727 | sv = sv_2mortal(newSV(80)); |
a0d0e21e LW |
1728 | continue; |
1729 | } | |
54310121 | 1730 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e | 1731 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
d5b5861b NC |
1732 | const STRLEN new_len |
1733 | = SvCUR(sv) < 60 ? 80 : SvCUR(sv)+40; /* allow some slop */ | |
1da4ca5f | 1734 | SvPV_renew(sv, new_len); |
a0d0e21e LW |
1735 | } |
1736 | RETURN; | |
1737 | } | |
1738 | } | |
1739 | ||
a0d0e21e LW |
1740 | PP(pp_helem) |
1741 | { | |
97aff369 | 1742 | dVAR; dSP; |
760ac839 | 1743 | HE* he; |
ae77835f | 1744 | SV **svp; |
c445ea15 | 1745 | SV * const keysv = POPs; |
85fbaab2 | 1746 | HV * const hv = MUTABLE_HV(POPs); |
a3b680e6 AL |
1747 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
1748 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
be6c24e0 | 1749 | SV *sv; |
92970b93 | 1750 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
d30e492c | 1751 | bool preeminent = TRUE; |
a0d0e21e | 1752 | |
d4c19fe8 | 1753 | if (SvTYPE(hv) != SVt_PVHV) |
a0d0e21e | 1754 | RETPUSHUNDEF; |
d4c19fe8 | 1755 | |
92970b93 | 1756 | if (localizing) { |
d4c19fe8 AL |
1757 | MAGIC *mg; |
1758 | HV *stash; | |
d30e492c VP |
1759 | |
1760 | /* If we can determine whether the element exist, | |
1761 | * Try to preserve the existenceness of a tied hash | |
1762 | * element by using EXISTS and DELETE if possible. | |
1763 | * Fallback to FETCH and STORE otherwise. */ | |
2c5f48c2 | 1764 | if (SvCANEXISTDELETE(hv)) |
d30e492c | 1765 | preeminent = hv_exists_ent(hv, keysv, 0); |
d4c19fe8 | 1766 | } |
d30e492c | 1767 | |
5f9d7e2b | 1768 | he = hv_fetch_ent(hv, keysv, lval && !defer, 0); |
d4c19fe8 | 1769 | svp = he ? &HeVAL(he) : NULL; |
a0d0e21e | 1770 | if (lval) { |
746f6409 | 1771 | if (!svp || !*svp || *svp == &PL_sv_undef) { |
68dc0745 | 1772 | SV* lv; |
1773 | SV* key2; | |
2d8e6c8d | 1774 | if (!defer) { |
be2597df | 1775 | DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv)); |
2d8e6c8d | 1776 | } |
68dc0745 | 1777 | lv = sv_newmortal(); |
1778 | sv_upgrade(lv, SVt_PVLV); | |
1779 | LvTYPE(lv) = 'y'; | |
6136c704 | 1780 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, NULL, 0); |
fc2b2dca | 1781 | SvREFCNT_dec_NN(key2); /* sv_magic() increments refcount */ |
b37c2d43 | 1782 | LvTARG(lv) = SvREFCNT_inc_simple(hv); |
68dc0745 | 1783 | LvTARGLEN(lv) = 1; |
1784 | PUSHs(lv); | |
1785 | RETURN; | |
1786 | } | |
92970b93 | 1787 | if (localizing) { |
bfcb3514 | 1788 | if (HvNAME_get(hv) && isGV(*svp)) |
159b6efe | 1789 | save_gp(MUTABLE_GV(*svp), !(PL_op->op_flags & OPf_SPECIAL)); |
47cfc530 VP |
1790 | else if (preeminent) |
1791 | save_helem_flags(hv, keysv, svp, | |
1792 | (PL_op->op_flags & OPf_SPECIAL) ? 0 : SAVEf_SETMAGIC); | |
1793 | else | |
1794 | SAVEHDELETE(hv, keysv); | |
5f05dabc | 1795 | } |
9026059d GG |
1796 | else if (PL_op->op_private & OPpDEREF) { |
1797 | PUSHs(vivify_ref(*svp, PL_op->op_private & OPpDEREF)); | |
1798 | RETURN; | |
1799 | } | |
a0d0e21e | 1800 | } |
746f6409 | 1801 | sv = (svp && *svp ? *svp : &PL_sv_undef); |
fd69380d DM |
1802 | /* Originally this did a conditional C<sv = sv_mortalcopy(sv)>; this |
1803 | * was to make C<local $tied{foo} = $tied{foo}> possible. | |
1804 | * However, it seems no longer to be needed for that purpose, and | |
1805 | * introduced a new bug: stuff like C<while ($hash{taintedval} =~ /.../g> | |
1806 | * would loop endlessly since the pos magic is getting set on the | |
1807 | * mortal copy and lost. However, the copy has the effect of | |
1808 | * triggering the get magic, and losing it altogether made things like | |
1809 | * c<$tied{foo};> in void context no longer do get magic, which some | |
1810 | * code relied on. Also, delayed triggering of magic on @+ and friends | |
1811 | * meant the original regex may be out of scope by now. So as a | |
1812 | * compromise, do the get magic here. (The MGf_GSKIP flag will stop it | |
1813 | * being called too many times). */ | |
39cf747a | 1814 | if (!lval && SvRMAGICAL(hv) && SvGMAGICAL(sv)) |
fd69380d | 1815 | mg_get(sv); |
be6c24e0 | 1816 | PUSHs(sv); |
a0d0e21e LW |
1817 | RETURN; |
1818 | } | |
1819 | ||
a0d0e21e LW |
1820 | PP(pp_iter) |
1821 | { | |
97aff369 | 1822 | dVAR; dSP; |
eb578fdb | 1823 | PERL_CONTEXT *cx; |
7d6c2cef | 1824 | SV *oldsv; |
1d7c1841 | 1825 | SV **itersvp; |
a0d0e21e | 1826 | |
924508f0 | 1827 | EXTEND(SP, 1); |
a0d0e21e | 1828 | cx = &cxstack[cxstack_ix]; |
1d7c1841 | 1829 | itersvp = CxITERVAR(cx); |
a48ce6be DM |
1830 | |
1831 | switch (CxTYPE(cx)) { | |
17c91640 | 1832 | |
b552b52c DM |
1833 | case CXt_LOOP_LAZYSV: /* string increment */ |
1834 | { | |
1835 | SV* cur = cx->blk_loop.state_u.lazysv.cur; | |
1836 | SV *end = cx->blk_loop.state_u.lazysv.end; | |
1837 | /* If the maximum is !SvOK(), pp_enteriter substitutes PL_sv_no. | |
1838 | It has SvPVX of "" and SvCUR of 0, which is what we want. */ | |
1839 | STRLEN maxlen = 0; | |
1840 | const char *max = SvPV_const(end, maxlen); | |
5d9574c1 | 1841 | if (UNLIKELY(SvNIOK(cur) || SvCUR(cur) > maxlen)) |
b552b52c DM |
1842 | RETPUSHNO; |
1843 | ||
1844 | oldsv = *itersvp; | |
5d9574c1 | 1845 | if (LIKELY(SvREFCNT(oldsv) == 1 && !SvMAGICAL(oldsv))) { |
b552b52c DM |
1846 | /* safe to reuse old SV */ |
1847 | sv_setsv(oldsv, cur); | |
a48ce6be | 1848 | } |
b552b52c DM |
1849 | else |
1850 | { | |
1851 | /* we need a fresh SV every time so that loop body sees a | |
1852 | * completely new SV for closures/references to work as | |
1853 | * they used to */ | |
1854 | *itersvp = newSVsv(cur); | |
fc2b2dca | 1855 | SvREFCNT_dec_NN(oldsv); |
b552b52c DM |
1856 | } |
1857 | if (strEQ(SvPVX_const(cur), max)) | |
1858 | sv_setiv(cur, 0); /* terminate next time */ | |
1859 | else | |
1860 | sv_inc(cur); | |
1861 | break; | |
1862 | } | |
a48ce6be | 1863 | |
fcef60b4 DM |
1864 | case CXt_LOOP_LAZYIV: /* integer increment */ |
1865 | { | |
1866 | IV cur = cx->blk_loop.state_u.lazyiv.cur; | |
5d9574c1 | 1867 | if (UNLIKELY(cur > cx->blk_loop.state_u.lazyiv.end)) |
89ea2908 | 1868 | RETPUSHNO; |
7f61b687 | 1869 | |
fcef60b4 | 1870 | oldsv = *itersvp; |
3db8f154 | 1871 | /* don't risk potential race */ |
5d9574c1 | 1872 | if (LIKELY(SvREFCNT(oldsv) == 1 && !SvMAGICAL(oldsv))) { |
eaa5c2d6 | 1873 | /* safe to reuse old SV */ |
fcef60b4 | 1874 | sv_setiv(oldsv, cur); |
eaa5c2d6 | 1875 | } |
1c846c1f | 1876 | else |
eaa5c2d6 GA |
1877 | { |
1878 | /* we need a fresh SV every time so that loop body sees a | |
1879 | * completely new SV for closures/references to work as they | |
1880 | * used to */ | |
fcef60b4 | 1881 | *itersvp = newSViv(cur); |
fc2b2dca | 1882 | SvREFCNT_dec_NN(oldsv); |
eaa5c2d6 | 1883 | } |
a2309040 | 1884 | |
5d9574c1 | 1885 | if (UNLIKELY(cur == IV_MAX)) { |
cdc1aa42 NC |
1886 | /* Handle end of range at IV_MAX */ |
1887 | cx->blk_loop.state_u.lazyiv.end = IV_MIN; | |
1888 | } else | |
1889 | ++cx->blk_loop.state_u.lazyiv.cur; | |
a48ce6be | 1890 | break; |
fcef60b4 | 1891 | } |
a48ce6be | 1892 | |
b552b52c | 1893 | case CXt_LOOP_FOR: /* iterate array */ |
7d6c2cef | 1894 | { |
89ea2908 | 1895 | |
7d6c2cef DM |
1896 | AV *av = cx->blk_loop.state_u.ary.ary; |
1897 | SV *sv; | |
1898 | bool av_is_stack = FALSE; | |
a8a20bb6 | 1899 | IV ix; |
7d6c2cef | 1900 | |
de080daa DM |
1901 | if (!av) { |
1902 | av_is_stack = TRUE; | |
1903 | av = PL_curstack; | |
1904 | } | |
1905 | if (PL_op->op_private & OPpITER_REVERSED) { | |
a8a20bb6 | 1906 | ix = --cx->blk_loop.state_u.ary.ix; |
5d9574c1 | 1907 | if (UNLIKELY(ix <= (av_is_stack ? cx->blk_loop.resetsp : -1))) |
de080daa | 1908 | RETPUSHNO; |
de080daa DM |
1909 | } |
1910 | else { | |
a8a20bb6 | 1911 | ix = ++cx->blk_loop.state_u.ary.ix; |
5d9574c1 | 1912 | if (UNLIKELY(ix > (av_is_stack ? cx->blk_oldsp : AvFILL(av)))) |
de080daa | 1913 | RETPUSHNO; |
a8a20bb6 | 1914 | } |
de080daa | 1915 | |
5d9574c1 | 1916 | if (UNLIKELY(SvMAGICAL(av) || AvREIFY(av))) { |
a8a20bb6 DM |
1917 | SV * const * const svp = av_fetch(av, ix, FALSE); |
1918 | sv = svp ? *svp : NULL; | |
1919 | } | |
1920 | else { | |
1921 | sv = AvARRAY(av)[ix]; | |
de080daa | 1922 | } |
ef3e5ea9 | 1923 | |
5d9574c1 DM |
1924 | if (LIKELY(sv)) { |
1925 | if (UNLIKELY(SvIS_FREED(sv))) { | |
f38aa882 DM |
1926 | *itersvp = NULL; |
1927 | Perl_croak(aTHX_ "Use of freed value in iteration"); | |
1928 | } | |
60779a30 DM |
1929 | if (SvPADTMP(sv)) { |
1930 | assert(!IS_PADGV(sv)); | |
8e079c2a | 1931 | sv = newSVsv(sv); |
60779a30 | 1932 | } |
8e079c2a FC |
1933 | else { |
1934 | SvTEMP_off(sv); | |
1935 | SvREFCNT_inc_simple_void_NN(sv); | |
1936 | } | |
de080daa | 1937 | } |
a600f7e6 | 1938 | else if (!av_is_stack) { |
199f858d | 1939 | sv = newSVavdefelem(av, ix, 0); |
de080daa | 1940 | } |
a600f7e6 FC |
1941 | else |
1942 | sv = &PL_sv_undef; | |
a0d0e21e | 1943 | |
de080daa DM |
1944 | oldsv = *itersvp; |
1945 | *itersvp = sv; | |
1946 | SvREFCNT_dec(oldsv); | |
de080daa | 1947 | break; |
7d6c2cef | 1948 | } |
a48ce6be DM |
1949 | |
1950 | default: | |
1951 | DIE(aTHX_ "panic: pp_iter, type=%u", CxTYPE(cx)); | |
1952 | } | |
b552b52c | 1953 | RETPUSHYES; |
a0d0e21e LW |
1954 | } |
1955 | ||
ef07e810 DM |
1956 | /* |
1957 | A description of how taint works in pattern matching and substitution. | |
1958 | ||
284167a5 S |
1959 | This is all conditional on NO_TAINT_SUPPORT not being defined. Under |
1960 | NO_TAINT_SUPPORT, taint-related operations should become no-ops. | |
1961 | ||
4e19c54b | 1962 | While the pattern is being assembled/concatenated and then compiled, |
284167a5 S |
1963 | PL_tainted will get set (via TAINT_set) if any component of the pattern |
1964 | is tainted, e.g. /.*$tainted/. At the end of pattern compilation, | |
1965 | the RXf_TAINTED flag is set on the pattern if PL_tainted is set (via | |
1738e041 DM |
1966 | TAINT_get). It will also be set if any component of the pattern matches |
1967 | based on locale-dependent behavior. | |
ef07e810 | 1968 | |
0ab462a6 DM |
1969 | When the pattern is copied, e.g. $r = qr/..../, the SV holding the ref to |
1970 | the pattern is marked as tainted. This means that subsequent usage, such | |
284167a5 S |
1971 | as /x$r/, will set PL_tainted using TAINT_set, and thus RXf_TAINTED, |
1972 | on the new pattern too. | |
ef07e810 | 1973 | |
272d35c9 | 1974 | RXf_TAINTED_SEEN is used post-execution by the get magic code |
ef07e810 DM |
1975 | of $1 et al to indicate whether the returned value should be tainted. |
1976 | It is the responsibility of the caller of the pattern (i.e. pp_match, | |
1977 | pp_subst etc) to set this flag for any other circumstances where $1 needs | |
1978 | to be tainted. | |
1979 | ||
1980 | The taint behaviour of pp_subst (and pp_substcont) is quite complex. | |
1981 | ||
1982 | There are three possible sources of taint | |
1983 | * the source string | |
1984 | * the pattern (both compile- and run-time, RXf_TAINTED / RXf_TAINTED_SEEN) | |
1985 | * the replacement string (or expression under /e) | |
1986 | ||
1987 | There are four destinations of taint and they are affected by the sources | |
1988 | according to the rules below: | |
1989 | ||
1990 | * the return value (not including /r): | |
1991 | tainted by the source string and pattern, but only for the | |
1992 | number-of-iterations case; boolean returns aren't tainted; | |
1993 | * the modified string (or modified copy under /r): | |
1994 | tainted by the source string, pattern, and replacement strings; | |
1995 | * $1 et al: | |
1996 | tainted by the pattern, and under 'use re "taint"', by the source | |
1997 | string too; | |
1998 | * PL_taint - i.e. whether subsequent code (e.g. in a /e block) is tainted: | |
1999 | should always be unset before executing subsequent code. | |
2000 | ||
2001 | The overall action of pp_subst is: | |
2002 | ||
2003 | * at the start, set bits in rxtainted indicating the taint status of | |
2004 | the various sources. | |
2005 | ||
2006 | * After each pattern execution, update the SUBST_TAINT_PAT bit in | |
2007 | rxtainted if RXf_TAINTED_SEEN has been set, to indicate that the | |
2008 | pattern has subsequently become tainted via locale ops. | |
2009 | ||
2010 | * If control is being passed to pp_substcont to execute a /e block, | |
2011 | save rxtainted in the CXt_SUBST block, for future use by | |
2012 | pp_substcont. | |
2013 | ||
2014 | * Whenever control is being returned to perl code (either by falling | |
2015 | off the "end" of pp_subst/pp_substcont, or by entering a /e block), | |
2016 | use the flag bits in rxtainted to make all the appropriate types of | |
0ab462a6 DM |
2017 | destination taint visible; e.g. set RXf_TAINTED_SEEN so that $1 |
2018 | et al will appear tainted. | |
ef07e810 DM |
2019 | |
2020 | pp_match is just a simpler version of the above. | |
2021 | ||
2022 | */ | |
2023 | ||
a0d0e21e LW |
2024 | PP(pp_subst) |
2025 | { | |
97aff369 | 2026 | dVAR; dSP; dTARG; |
eb578fdb | 2027 | PMOP *pm = cPMOP; |
a0d0e21e | 2028 | PMOP *rpm = pm; |
eb578fdb | 2029 | char *s; |
a0d0e21e | 2030 | char *strend; |
5c144d81 | 2031 | const char *c; |
a0d0e21e LW |
2032 | STRLEN clen; |
2033 | I32 iters = 0; | |
2034 | I32 maxiters; | |
a0d0e21e | 2035 | bool once; |
ef07e810 DM |
2036 | U8 rxtainted = 0; /* holds various SUBST_TAINT_* flag bits. |
2037 | See "how taint works" above */ | |
a0d0e21e | 2038 | char *orig; |
1ed74d04 | 2039 | U8 r_flags; |
eb578fdb | 2040 | REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
2041 | STRLEN len; |
2042 | int force_on_match = 0; | |
0bcc34c2 | 2043 | const I32 oldsave = PL_savestack_ix; |
792b2c16 | 2044 | STRLEN slen; |
26a74523 | 2045 | bool doutf8 = FALSE; /* whether replacement is in utf8 */ |
db2c6cb3 | 2046 | #ifdef PERL_ANY_COW |
ed252734 NC |
2047 | bool is_cow; |
2048 | #endif | |
a0714e2c | 2049 | SV *nsv = NULL; |
b770e143 | 2050 | /* known replacement string? */ |
eb578fdb | 2051 | SV *dstr = (pm->op_pmflags & PMf_CONST) ? POPs : NULL; |
a0d0e21e | 2052 | |
f410a211 NC |
2053 | PERL_ASYNC_CHECK(); |
2054 | ||
533c011a | 2055 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 2056 | TARG = POPs; |
59f00321 RGS |
2057 | else if (PL_op->op_private & OPpTARGET_MY) |
2058 | GETTARGET; | |
a0d0e21e | 2059 | else { |
54b9620d | 2060 | TARG = DEFSV; |
a0d0e21e | 2061 | EXTEND(SP,1); |
1c846c1f | 2062 | } |
d9f424b2 | 2063 | |
64534138 | 2064 | SvGETMAGIC(TARG); /* must come before cow check */ |
db2c6cb3 | 2065 | #ifdef PERL_ANY_COW |
ed252734 NC |
2066 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, |
2067 | because they make integers such as 256 "false". */ | |
2068 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
2069 | #else | |
765f542d NC |
2070 | if (SvIsCOW(TARG)) |
2071 | sv_force_normal_flags(TARG,0); | |
ed252734 | 2072 | #endif |
8ca8a454 | 2073 | if (!(rpm->op_pmflags & PMf_NONDESTRUCT) |
8ca8a454 NC |
2074 | && (SvREADONLY(TARG) |
2075 | || ( ((SvTYPE(TARG) == SVt_PVGV && isGV_with_GP(TARG)) | |
2076 | || SvTYPE(TARG) > SVt_PVLV) | |
2077 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) | |
cb077ed2 | 2078 | Perl_croak_no_modify(); |
8ec5e241 NIS |
2079 | PUTBACK; |
2080 | ||
6ac6605d DM |
2081 | orig = SvPV_nomg(TARG, len); |
2082 | /* note we don't (yet) force the var into being a string; if we fail | |
2083 | * to match, we leave as-is; on successful match howeverm, we *will* | |
2084 | * coerce into a string, then repeat the match */ | |
4499db73 | 2085 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV || SvVOK(TARG)) |
a0d0e21e | 2086 | force_on_match = 1; |
20be6587 DM |
2087 | |
2088 | /* only replace once? */ | |
2089 | once = !(rpm->op_pmflags & PMf_GLOBAL); | |
2090 | ||
ef07e810 | 2091 | /* See "how taint works" above */ |
284167a5 | 2092 | if (TAINTING_get) { |
20be6587 DM |
2093 | rxtainted = ( |
2094 | (SvTAINTED(TARG) ? SUBST_TAINT_STR : 0) | |
284167a5 | 2095 | | (RX_ISTAINTED(rx) ? SUBST_TAINT_PAT : 0) |
20be6587 DM |
2096 | | ((pm->op_pmflags & PMf_RETAINT) ? SUBST_TAINT_RETAINT : 0) |
2097 | | ((once && !(rpm->op_pmflags & PMf_NONDESTRUCT)) | |
2098 | ? SUBST_TAINT_BOOLRET : 0)); | |
2099 | TAINT_NOT; | |
2100 | } | |
a12c0f56 | 2101 | |
a0d0e21e | 2102 | force_it: |
6ac6605d DM |
2103 | if (!pm || !orig) |
2104 | DIE(aTHX_ "panic: pp_subst, pm=%p, orig=%p", pm, orig); | |
a0d0e21e | 2105 | |
6ac6605d DM |
2106 | strend = orig + len; |
2107 | slen = DO_UTF8(TARG) ? utf8_length((U8*)orig, (U8*)strend) : len; | |
792b2c16 JH |
2108 | maxiters = 2 * slen + 10; /* We can match twice at each |
2109 | position, once with zero-length, | |
2110 | second time with non-zero. */ | |
a0d0e21e | 2111 | |
6a97c51d | 2112 | if (!RX_PRELEN(rx) && PL_curpm |
8d919b0a | 2113 | && !ReANY(rx)->mother_re) { |
3280af22 | 2114 | pm = PL_curpm; |
aaa362c4 | 2115 | rx = PM_GETRE(pm); |
a0d0e21e | 2116 | } |
6502e081 | 2117 | |
6e240d0b | 2118 | #ifdef PERL_SAWAMPERSAND |
6502e081 DM |
2119 | r_flags = ( RX_NPARENS(rx) |
2120 | || PL_sawampersand | |
6502e081 | 2121 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY)) |
5b0e71e9 | 2122 | || (rpm->op_pmflags & PMf_KEEPCOPY) |
6502e081 DM |
2123 | ) |
2124 | ? REXEC_COPY_STR | |
2125 | : 0; | |
6e240d0b FC |
2126 | #else |
2127 | r_flags = REXEC_COPY_STR; | |
2128 | #endif | |
7fba1cd6 | 2129 | |
0395280b | 2130 | if (!CALLREGEXEC(rx, orig, strend, orig, 0, TARG, NULL, r_flags)) |
8b64c330 | 2131 | { |
5e79dfb9 DM |
2132 | SPAGAIN; |
2133 | PUSHs(rpm->op_pmflags & PMf_NONDESTRUCT ? TARG : &PL_sv_no); | |
2134 | LEAVE_SCOPE(oldsave); | |
2135 | RETURN; | |
2136 | } | |
1754320d FC |
2137 | PL_curpm = pm; |
2138 | ||
71be2cbc | 2139 | /* known replacement string? */ |
f272994b | 2140 | if (dstr) { |
8514a05a JH |
2141 | /* replacement needing upgrading? */ |
2142 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 2143 | nsv = sv_newmortal(); |
4a176938 | 2144 | SvSetSV(nsv, dstr); |
8514a05a JH |
2145 | if (PL_encoding) |
2146 | sv_recode_to_utf8(nsv, PL_encoding); | |
2147 | else | |
2148 | sv_utf8_upgrade(nsv); | |
5c144d81 | 2149 | c = SvPV_const(nsv, clen); |
4a176938 JH |
2150 | doutf8 = TRUE; |
2151 | } | |
2152 | else { | |
5c144d81 | 2153 | c = SvPV_const(dstr, clen); |
4a176938 | 2154 | doutf8 = DO_UTF8(dstr); |
8514a05a | 2155 | } |
bb933b9b FC |
2156 | |
2157 | if (SvTAINTED(dstr)) | |
2158 | rxtainted |= SUBST_TAINT_REPL; | |
f272994b A |
2159 | } |
2160 | else { | |
6136c704 | 2161 | c = NULL; |
f272994b A |
2162 | doutf8 = FALSE; |
2163 | } | |
2164 | ||
71be2cbc | 2165 | /* can do inplace substitution? */ |
ed252734 | 2166 | if (c |
db2c6cb3 | 2167 | #ifdef PERL_ANY_COW |
ed252734 NC |
2168 | && !is_cow |
2169 | #endif | |
fbfb1899 | 2170 | && (I32)clen <= RX_MINLENRET(rx) |
9cefd268 FC |
2171 | && ( once |
2172 | || !(r_flags & REXEC_COPY_STR) | |
2173 | || (!SvGMAGICAL(dstr) && !(RX_EXTFLAGS(rx) & RXf_EVAL_SEEN)) | |
2174 | ) | |
dbc200c5 | 2175 | && !(RX_EXTFLAGS(rx) & RXf_NO_INPLACE_SUBST) |
8ca8a454 NC |
2176 | && (!doutf8 || SvUTF8(TARG)) |
2177 | && !(rpm->op_pmflags & PMf_NONDESTRUCT)) | |
8b030b38 | 2178 | { |
ec911639 | 2179 | |
db2c6cb3 | 2180 | #ifdef PERL_ANY_COW |
ed252734 | 2181 | if (SvIsCOW(TARG)) { |
f7a8268c | 2182 | if (!force_on_match) |
ed252734 | 2183 | goto have_a_cow; |
f7a8268c | 2184 | assert(SvVOK(TARG)); |
ed252734 NC |
2185 | } |
2186 | #endif | |
71be2cbc | 2187 | if (force_on_match) { |
6ac6605d DM |
2188 | /* redo the first match, this time with the orig var |
2189 | * forced into being a string */ | |
71be2cbc | 2190 | force_on_match = 0; |
6ac6605d | 2191 | orig = SvPV_force_nomg(TARG, len); |
71be2cbc | 2192 | goto force_it; |
2193 | } | |
39b40493 | 2194 | |
71be2cbc | 2195 | if (once) { |
c67ab8f2 | 2196 | char *d, *m; |
20be6587 DM |
2197 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
2198 | rxtainted |= SUBST_TAINT_PAT; | |
07bc277f NC |
2199 | m = orig + RX_OFFS(rx)[0].start; |
2200 | d = orig + RX_OFFS(rx)[0].end; | |
71be2cbc | 2201 | s = orig; |
2202 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2ec7214c | 2203 | I32 i; |
71be2cbc | 2204 | if (clen) { |
2205 | Copy(c, m, clen, char); | |
2206 | m += clen; | |
a0d0e21e | 2207 | } |
71be2cbc | 2208 | i = strend - d; |
2209 | if (i > 0) { | |
2210 | Move(d, m, i, char); | |
2211 | m += i; | |
a0d0e21e | 2212 | } |
71be2cbc | 2213 | *m = '\0'; |
2214 | SvCUR_set(TARG, m - s); | |
2215 | } | |
2ec7214c DM |
2216 | else { /* faster from front */ |
2217 | I32 i = m - s; | |
71be2cbc | 2218 | d -= clen; |
2ec7214c DM |
2219 | if (i > 0) |
2220 | Move(s, d - i, i, char); | |
71be2cbc | 2221 | sv_chop(TARG, d-i); |
71be2cbc | 2222 | if (clen) |
c947cd8d | 2223 | Copy(c, d, clen, char); |
71be2cbc | 2224 | } |
8ec5e241 | 2225 | SPAGAIN; |
8ca8a454 | 2226 | PUSHs(&PL_sv_yes); |
71be2cbc | 2227 | } |
2228 | else { | |
c67ab8f2 | 2229 | char *d, *m; |
0395280b | 2230 | d = s = RX_OFFS(rx)[0].start + orig; |
71be2cbc | 2231 | do { |
2b25edcf | 2232 | I32 i; |
5d9574c1 | 2233 | if (UNLIKELY(iters++ > maxiters)) |
cea2e8a9 | 2234 | DIE(aTHX_ "Substitution loop"); |
5d9574c1 | 2235 | if (UNLIKELY(RX_MATCH_TAINTED(rx))) /* run time pattern taint, eg locale */ |
20be6587 | 2236 | rxtainted |= SUBST_TAINT_PAT; |
07bc277f | 2237 | m = RX_OFFS(rx)[0].start + orig; |
155aba94 | 2238 | if ((i = m - s)) { |
71be2cbc | 2239 | if (s != d) |
2240 | Move(s, d, i, char); | |
2241 | d += i; | |
a0d0e21e | 2242 | } |
71be2cbc | 2243 | if (clen) { |
2244 | Copy(c, d, clen, char); | |
2245 | d += clen; | |
2246 | } | |
07bc277f | 2247 | s = RX_OFFS(rx)[0].end + orig; |
7ce41e5c FC |
2248 | } while (CALLREGEXEC(rx, s, strend, orig, |
2249 | s == m, /* don't match same null twice */ | |
f722798b | 2250 | TARG, NULL, |
d5e7783a | 2251 | REXEC_NOT_FIRST|REXEC_IGNOREPOS|REXEC_FAIL_ON_UNDERFLOW)); |
71be2cbc | 2252 | if (s != d) { |
2b25edcf | 2253 | I32 i = strend - s; |
aa07b2f6 | 2254 | SvCUR_set(TARG, d - SvPVX_const(TARG) + i); |
71be2cbc | 2255 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e | 2256 | } |
8ec5e241 | 2257 | SPAGAIN; |
8ca8a454 | 2258 | mPUSHi((I32)iters); |
a0d0e21e LW |
2259 | } |
2260 | } | |
ff6e92e8 | 2261 | else { |
1754320d | 2262 | bool first; |
c67ab8f2 | 2263 | char *m; |
1754320d | 2264 | SV *repl; |
a0d0e21e | 2265 | if (force_on_match) { |
6ac6605d DM |
2266 | /* redo the first match, this time with the orig var |
2267 | * forced into being a string */ | |
a0d0e21e | 2268 | force_on_match = 0; |
0c1438a1 NC |
2269 | if (rpm->op_pmflags & PMf_NONDESTRUCT) { |
2270 | /* I feel that it should be possible to avoid this mortal copy | |
2271 | given that the code below copies into a new destination. | |
2272 | However, I suspect it isn't worth the complexity of | |
2273 | unravelling the C<goto force_it> for the small number of | |
2274 | cases where it would be viable to drop into the copy code. */ | |
2275 | TARG = sv_2mortal(newSVsv(TARG)); | |
2276 | } | |
6ac6605d | 2277 | orig = SvPV_force_nomg(TARG, len); |
a0d0e21e LW |
2278 | goto force_it; |
2279 | } | |
db2c6cb3 | 2280 | #ifdef PERL_ANY_COW |
ed252734 NC |
2281 | have_a_cow: |
2282 | #endif | |
20be6587 DM |
2283 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
2284 | rxtainted |= SUBST_TAINT_PAT; | |
1754320d | 2285 | repl = dstr; |
0395280b DM |
2286 | s = RX_OFFS(rx)[0].start + orig; |
2287 | dstr = newSVpvn_flags(orig, s-orig, | |
2288 | SVs_TEMP | (DO_UTF8(TARG) ? SVf_UTF8 : 0)); | |
a0d0e21e | 2289 | if (!c) { |
eb578fdb | 2290 | PERL_CONTEXT *cx; |
8ec5e241 | 2291 | SPAGAIN; |
0395280b | 2292 | m = orig; |
20be6587 DM |
2293 | /* note that a whole bunch of local vars are saved here for |
2294 | * use by pp_substcont: here's a list of them in case you're | |
2295 | * searching for places in this sub that uses a particular var: | |
2296 | * iters maxiters r_flags oldsave rxtainted orig dstr targ | |
2297 | * s m strend rx once */ | |
a0d0e21e | 2298 | PUSHSUBST(cx); |
20e98b0f | 2299 | RETURNOP(cPMOP->op_pmreplrootu.op_pmreplroot); |
a0d0e21e | 2300 | } |
1754320d | 2301 | first = TRUE; |
a0d0e21e | 2302 | do { |
5d9574c1 | 2303 | if (UNLIKELY(iters++ > maxiters)) |
cea2e8a9 | 2304 | DIE(aTHX_ "Substitution loop"); |
5d9574c1 | 2305 | if (UNLIKELY(RX_MATCH_TAINTED(rx))) |
20be6587 | 2306 | rxtainted |= SUBST_TAINT_PAT; |
07bc277f | 2307 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
c67ab8f2 DM |
2308 | char *old_s = s; |
2309 | char *old_orig = orig; | |
6502e081 | 2310 | assert(RX_SUBOFFSET(rx) == 0); |
c67ab8f2 | 2311 | |
07bc277f | 2312 | orig = RX_SUBBEG(rx); |
c67ab8f2 DM |
2313 | s = orig + (old_s - old_orig); |
2314 | strend = s + (strend - old_s); | |
a0d0e21e | 2315 | } |
07bc277f | 2316 | m = RX_OFFS(rx)[0].start + orig; |
64534138 | 2317 | sv_catpvn_nomg_maybeutf8(dstr, s, m - s, DO_UTF8(TARG)); |
07bc277f | 2318 | s = RX_OFFS(rx)[0].end + orig; |
1754320d FC |
2319 | if (first) { |
2320 | /* replacement already stringified */ | |
2321 | if (clen) | |
64534138 | 2322 | sv_catpvn_nomg_maybeutf8(dstr, c, clen, doutf8); |
1754320d FC |
2323 | first = FALSE; |
2324 | } | |
2325 | else { | |
1754320d FC |
2326 | if (PL_encoding) { |
2327 | if (!nsv) nsv = sv_newmortal(); | |
2328 | sv_copypv(nsv, repl); | |
2329 | if (!DO_UTF8(nsv)) sv_recode_to_utf8(nsv, PL_encoding); | |
2330 | sv_catsv(dstr, nsv); | |
2331 | } | |
2332 | else sv_catsv(dstr, repl); | |
5d9574c1 | 2333 | if (UNLIKELY(SvTAINTED(repl))) |
bb933b9b | 2334 | rxtainted |= SUBST_TAINT_REPL; |
1754320d | 2335 | } |
a0d0e21e LW |
2336 | if (once) |
2337 | break; | |
f9f4320a | 2338 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
d5e7783a DM |
2339 | TARG, NULL, |
2340 | REXEC_NOT_FIRST|REXEC_IGNOREPOS|REXEC_FAIL_ON_UNDERFLOW)); | |
64534138 | 2341 | sv_catpvn_nomg_maybeutf8(dstr, s, strend - s, DO_UTF8(TARG)); |
748a9306 | 2342 | |
8ca8a454 NC |
2343 | if (rpm->op_pmflags & PMf_NONDESTRUCT) { |
2344 | /* From here on down we're using the copy, and leaving the original | |
2345 | untouched. */ | |
2346 | TARG = dstr; | |
2347 | SPAGAIN; | |
2348 | PUSHs(dstr); | |
2349 | } else { | |
db2c6cb3 | 2350 | #ifdef PERL_ANY_COW |
8ca8a454 NC |
2351 | /* The match may make the string COW. If so, brilliant, because |
2352 | that's just saved us one malloc, copy and free - the regexp has | |
2353 | donated the old buffer, and we malloc an entirely new one, rather | |
2354 | than the regexp malloc()ing a buffer and copying our original, | |
2355 | only for us to throw it away here during the substitution. */ | |
2356 | if (SvIsCOW(TARG)) { | |
2357 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
2358 | } else | |
ed252734 | 2359 | #endif |
8ca8a454 NC |
2360 | { |
2361 | SvPV_free(TARG); | |
2362 | } | |
2363 | SvPV_set(TARG, SvPVX(dstr)); | |
2364 | SvCUR_set(TARG, SvCUR(dstr)); | |
2365 | SvLEN_set(TARG, SvLEN(dstr)); | |
64534138 | 2366 | SvFLAGS(TARG) |= SvUTF8(dstr); |
8ca8a454 | 2367 | SvPV_set(dstr, NULL); |
748a9306 | 2368 | |
8ca8a454 | 2369 | SPAGAIN; |
4f4d7508 | 2370 | mPUSHi((I32)iters); |
8ca8a454 NC |
2371 | } |
2372 | } | |
2373 | ||
2374 | if (!(rpm->op_pmflags & PMf_NONDESTRUCT)) { | |
2375 | (void)SvPOK_only_UTF8(TARG); | |
a0d0e21e | 2376 | } |
20be6587 | 2377 | |
ef07e810 | 2378 | /* See "how taint works" above */ |
284167a5 | 2379 | if (TAINTING_get) { |
20be6587 DM |
2380 | if ((rxtainted & SUBST_TAINT_PAT) || |
2381 | ((rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) == | |
2382 | (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
2383 | ) | |
2384 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
2385 | ||
2386 | if (!(rxtainted & SUBST_TAINT_BOOLRET) | |
2387 | && (rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT)) | |
2388 | ) | |
2389 | SvTAINTED_on(TOPs); /* taint return value */ | |
2390 | else | |
2391 | SvTAINTED_off(TOPs); /* may have got tainted earlier */ | |
2392 | ||
2393 | /* needed for mg_set below */ | |
284167a5 S |
2394 | TAINT_set( |
2395 | cBOOL(rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL)) | |
2396 | ); | |
20be6587 DM |
2397 | SvTAINT(TARG); |
2398 | } | |
2399 | SvSETMAGIC(TARG); /* PL_tainted must be correctly set for this mg_set */ | |
2400 | TAINT_NOT; | |
f1a76097 DM |
2401 | LEAVE_SCOPE(oldsave); |
2402 | RETURN; | |
a0d0e21e LW |
2403 | } |
2404 | ||
2405 | PP(pp_grepwhile) | |
2406 | { | |
27da23d5 | 2407 | dVAR; dSP; |
a0d0e21e LW |
2408 | |
2409 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2410 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2411 | ++*PL_markstack_ptr; | |
b2a2a901 | 2412 | FREETMPS; |
d343c3ef | 2413 | LEAVE_with_name("grep_item"); /* exit inner scope */ |
a0d0e21e LW |
2414 | |
2415 | /* All done yet? */ | |
5d9574c1 | 2416 | if (UNLIKELY(PL_stack_base + *PL_markstack_ptr > SP)) { |
a0d0e21e | 2417 | I32 items; |
c4420975 | 2418 | const I32 gimme = GIMME_V; |
a0d0e21e | 2419 | |
d343c3ef | 2420 | LEAVE_with_name("grep"); /* exit outer scope */ |
a0d0e21e | 2421 | (void)POPMARK; /* pop src */ |
3280af22 | 2422 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2423 | (void)POPMARK; /* pop dst */ |
3280af22 | 2424 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2425 | if (gimme == G_SCALAR) { |
7cc47870 | 2426 | if (PL_op->op_private & OPpGREP_LEX) { |
c4420975 | 2427 | SV* const sv = sv_newmortal(); |
7cc47870 RGS |
2428 | sv_setiv(sv, items); |
2429 | PUSHs(sv); | |
2430 | } | |
2431 | else { | |
2432 | dTARGET; | |
2433 | XPUSHi(items); | |
2434 | } | |
a0d0e21e | 2435 | } |
54310121 | 2436 | else if (gimme == G_ARRAY) |
2437 | SP += items; | |
a0d0e21e LW |
2438 | RETURN; |
2439 | } | |
2440 | else { | |
2441 | SV *src; | |
2442 | ||
d343c3ef | 2443 | ENTER_with_name("grep_item"); /* enter inner scope */ |
1d7c1841 | 2444 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2445 | |
3280af22 | 2446 | src = PL_stack_base[*PL_markstack_ptr]; |
60779a30 DM |
2447 | if (SvPADTMP(src)) { |
2448 | assert(!IS_PADGV(src)); | |
a0ed822e FC |
2449 | src = PL_stack_base[*PL_markstack_ptr] = sv_mortalcopy(src); |
2450 | PL_tmps_floor++; | |
2451 | } | |
a0d0e21e | 2452 | SvTEMP_off(src); |
59f00321 RGS |
2453 | if (PL_op->op_private & OPpGREP_LEX) |
2454 | PAD_SVl(PL_op->op_targ) = src; | |
2455 | else | |
414bf5ae | 2456 | DEFSV_set(src); |
a0d0e21e LW |
2457 | |
2458 | RETURNOP(cLOGOP->op_other); | |
2459 | } | |
2460 | } | |
2461 | ||
2462 | PP(pp_leavesub) | |
2463 | { | |
27da23d5 | 2464 | dVAR; dSP; |
a0d0e21e LW |
2465 | SV **mark; |
2466 | SV **newsp; | |
2467 | PMOP *newpm; | |
2468 | I32 gimme; | |
eb578fdb | 2469 | PERL_CONTEXT *cx; |
b0d9ce38 | 2470 | SV *sv; |
a0d0e21e | 2471 | |
9850bf21 RH |
2472 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2473 | return 0; | |
2474 | ||
a0d0e21e | 2475 | POPBLOCK(cx,newpm); |
5dd42e15 | 2476 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2477 | |
a1f49e72 | 2478 | TAINT_NOT; |
a0d0e21e LW |
2479 | if (gimme == G_SCALAR) { |
2480 | MARK = newsp + 1; | |
5d9574c1 | 2481 | if (LIKELY(MARK <= SP)) { |
a8bba7fa | 2482 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
6f48390a FC |
2483 | if (SvTEMP(TOPs) && SvREFCNT(TOPs) == 1 |
2484 | && !SvMAGICAL(TOPs)) { | |
a29cdaf0 IZ |
2485 | *MARK = SvREFCNT_inc(TOPs); |
2486 | FREETMPS; | |
2487 | sv_2mortal(*MARK); | |
cd06dffe GS |
2488 | } |
2489 | else { | |
959e3673 | 2490 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2491 | FREETMPS; |
959e3673 | 2492 | *MARK = sv_mortalcopy(sv); |
fc2b2dca | 2493 | SvREFCNT_dec_NN(sv); |
a29cdaf0 | 2494 | } |
cd06dffe | 2495 | } |
6f48390a FC |
2496 | else if (SvTEMP(TOPs) && SvREFCNT(TOPs) == 1 |
2497 | && !SvMAGICAL(TOPs)) { | |
767eda44 | 2498 | *MARK = TOPs; |
767eda44 | 2499 | } |
cd06dffe | 2500 | else |
767eda44 | 2501 | *MARK = sv_mortalcopy(TOPs); |
cd06dffe GS |
2502 | } |
2503 | else { | |
f86702cc | 2504 | MEXTEND(MARK, 0); |
3280af22 | 2505 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2506 | } |
2507 | SP = MARK; | |
2508 | } | |
54310121 | 2509 | else if (gimme == G_ARRAY) { |
f86702cc | 2510 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
6f48390a FC |
2511 | if (!SvTEMP(*MARK) || SvREFCNT(*MARK) != 1 |
2512 | || SvMAGICAL(*MARK)) { | |
f86702cc | 2513 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2514 | TAINT_NOT; /* Each item is independent */ |
2515 | } | |
f86702cc | 2516 | } |
a0d0e21e | 2517 | } |
f86702cc | 2518 | PUTBACK; |
1c846c1f | 2519 | |
a57c6685 | 2520 | LEAVE; |
b0d9ce38 | 2521 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
25375124 | 2522 | cxstack_ix--; |
3280af22 | 2523 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2524 | |
b0d9ce38 | 2525 | LEAVESUB(sv); |
f39bc417 | 2526 | return cx->blk_sub.retop; |
a0d0e21e LW |
2527 | } |
2528 | ||
2529 | PP(pp_entersub) | |
2530 | { | |
27da23d5 | 2531 | dVAR; dSP; dPOPss; |
a0d0e21e | 2532 | GV *gv; |
eb578fdb KW |
2533 | CV *cv; |
2534 | PERL_CONTEXT *cx; | |
5d94fbed | 2535 | I32 gimme; |
a9c4fd4e | 2536 | const bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e | 2537 | |
f5719c02 | 2538 | if (UNLIKELY(!sv)) |
cea2e8a9 | 2539 | DIE(aTHX_ "Not a CODE reference"); |
f5719c02 DM |
2540 | /* This is overwhelmingly the most common case: */ |
2541 | if (!LIKELY(SvTYPE(sv) == SVt_PVGV && (cv = GvCVu((const GV *)sv)))) { | |
313107ce DM |
2542 | switch (SvTYPE(sv)) { |
2543 | case SVt_PVGV: | |
2544 | we_have_a_glob: | |
2545 | if (!(cv = GvCVu((const GV *)sv))) { | |
2546 | HV *stash; | |
2547 | cv = sv_2cv(sv, &stash, &gv, 0); | |
2548 | } | |
2549 | if (!cv) { | |
2550 | ENTER; | |
2551 | SAVETMPS; | |
2552 | goto try_autoload; | |
2553 | } | |
2554 | break; | |
2555 | case SVt_PVLV: | |
2556 | if(isGV_with_GP(sv)) goto we_have_a_glob; | |
924ba076 | 2557 | /* FALLTHROUGH */ |
313107ce DM |
2558 | default: |
2559 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ | |
2560 | if (hasargs) | |
2561 | SP = PL_stack_base + POPMARK; | |
2562 | else | |
2563 | (void)POPMARK; | |
2564 | RETURN; | |
2565 | } | |
2566 | SvGETMAGIC(sv); | |
2567 | if (SvROK(sv)) { | |
2568 | if (SvAMAGIC(sv)) { | |
2569 | sv = amagic_deref_call(sv, to_cv_amg); | |
2570 | /* Don't SPAGAIN here. */ | |
2571 | } | |
2572 | } | |
2573 | else { | |
2574 | const char *sym; | |
2575 | STRLEN len; | |
2576 | if (!SvOK(sv)) | |
2577 | DIE(aTHX_ PL_no_usym, "a subroutine"); | |
2578 | sym = SvPV_nomg_const(sv, len); | |
2579 | if (PL_op->op_private & HINT_STRICT_REFS) | |
2580 | DIE(aTHX_ "Can't use string (\"%" SVf32 "\"%s) as a subroutine ref while \"strict refs\" in use", sv, len>32 ? "..." : ""); | |
2581 | cv = get_cvn_flags(sym, len, GV_ADD|SvUTF8(sv)); | |
2582 | break; | |
2583 | } | |
2584 | cv = MUTABLE_CV(SvRV(sv)); | |
2585 | if (SvTYPE(cv) == SVt_PVCV) | |
2586 | break; | |
924ba076 | 2587 | /* FALLTHROUGH */ |
313107ce DM |
2588 | case SVt_PVHV: |
2589 | case SVt_PVAV: | |
2590 | DIE(aTHX_ "Not a CODE reference"); | |
2591 | /* This is the second most common case: */ | |
2592 | case SVt_PVCV: | |
2593 | cv = MUTABLE_CV(sv); | |
2594 | break; | |
2595 | } | |
f5719c02 | 2596 | } |
a0d0e21e | 2597 | |
a57c6685 | 2598 | ENTER; |
a0d0e21e LW |
2599 | |
2600 | retry: | |
f5719c02 | 2601 | if (UNLIKELY(CvCLONE(cv) && ! CvCLONED(cv))) |
541ed3a9 | 2602 | DIE(aTHX_ "Closure prototype called"); |
f5719c02 | 2603 | if (UNLIKELY(!CvROOT(cv) && !CvXSUB(cv))) { |
2f349aa0 NC |
2604 | GV* autogv; |
2605 | SV* sub_name; | |
2606 | ||
2607 | /* anonymous or undef'd function leaves us no recourse */ | |
7d2057d8 FC |
2608 | if (CvANON(cv) || !(gv = CvGV(cv))) { |
2609 | if (CvNAMED(cv)) | |
2610 | DIE(aTHX_ "Undefined subroutine &%"HEKf" called", | |
2611 | HEKfARG(CvNAME_HEK(cv))); | |
2f349aa0 | 2612 | DIE(aTHX_ "Undefined subroutine called"); |
7d2057d8 | 2613 | } |
2f349aa0 NC |
2614 | |
2615 | /* autoloaded stub? */ | |
2616 | if (cv != GvCV(gv)) { | |
2617 | cv = GvCV(gv); | |
2618 | } | |
2619 | /* should call AUTOLOAD now? */ | |
2620 | else { | |
7e623da3 | 2621 | try_autoload: |
d1089224 BF |
2622 | if ((autogv = gv_autoload_pvn(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
2623 | GvNAMEUTF8(gv) ? SVf_UTF8 : 0))) | |
2f349aa0 NC |
2624 | { |
2625 | cv = GvCV(autogv); | |
2626 | } | |
2f349aa0 | 2627 | else { |
c220e1a1 | 2628 | sorry: |
2f349aa0 | 2629 | sub_name = sv_newmortal(); |
6136c704 | 2630 | gv_efullname3(sub_name, gv, NULL); |
be2597df | 2631 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", SVfARG(sub_name)); |
2f349aa0 NC |
2632 | } |
2633 | } | |
2634 | if (!cv) | |
c220e1a1 | 2635 | goto sorry; |
2f349aa0 | 2636 | goto retry; |
a0d0e21e LW |
2637 | } |
2638 | ||
f5719c02 DM |
2639 | if (UNLIKELY((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) |
2640 | && !CvNODEBUG(cv))) | |
2641 | { | |
005a8a35 | 2642 | Perl_get_db_sub(aTHX_ &sv, cv); |
a9ef256d NC |
2643 | if (CvISXSUB(cv)) |
2644 | PL_curcopdb = PL_curcop; | |
1ad62f64 BR |
2645 | if (CvLVALUE(cv)) { |
2646 | /* check for lsub that handles lvalue subroutines */ | |
07b605e5 | 2647 | cv = GvCV(gv_fetchpvs("DB::lsub", GV_ADDMULTI, SVt_PVCV)); |
1ad62f64 BR |
2648 | /* if lsub not found then fall back to DB::sub */ |
2649 | if (!cv) cv = GvCV(PL_DBsub); | |
2650 | } else { | |
2651 | cv = GvCV(PL_DBsub); | |
2652 | } | |
a9ef256d | 2653 | |
ccafdc96 RGS |
2654 | if (!cv || (!CvXSUB(cv) && !CvSTART(cv))) |
2655 | DIE(aTHX_ "No DB::sub routine defined"); | |
67caa1fe | 2656 | } |
a0d0e21e | 2657 | |
f5719c02 DM |
2658 | gimme = GIMME_V; |
2659 | ||
aed2304a | 2660 | if (!(CvISXSUB(cv))) { |
f1025168 | 2661 | /* This path taken at least 75% of the time */ |
a0d0e21e | 2662 | dMARK; |
b70d5558 | 2663 | PADLIST * const padlist = CvPADLIST(cv); |
3689ad62 | 2664 | I32 depth; |
f5719c02 | 2665 | |
a0d0e21e LW |
2666 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2667 | PUSHSUB(cx); | |
f39bc417 | 2668 | cx->blk_sub.retop = PL_op->op_next; |
3689ad62 | 2669 | if (UNLIKELY((depth = ++CvDEPTH(cv)) >= 2)) { |
3a76ca88 | 2670 | PERL_STACK_OVERFLOW_CHECK(); |
3689ad62 | 2671 | pad_push(padlist, depth); |
a0d0e21e | 2672 | } |
3a76ca88 | 2673 | SAVECOMPPAD(); |
3689ad62 | 2674 | PAD_SET_CUR_NOSAVE(padlist, depth); |
f5719c02 | 2675 | if (LIKELY(hasargs)) { |
10533ace | 2676 | AV *const av = MUTABLE_AV(PAD_SVl(0)); |
bdf02c57 DM |
2677 | SSize_t items; |
2678 | AV **defavp; | |
2679 | ||
f5719c02 | 2680 | if (UNLIKELY(AvREAL(av))) { |
221373f0 GS |
2681 | /* @_ is normally not REAL--this should only ever |
2682 | * happen when DB::sub() calls things that modify @_ */ | |
2683 | av_clear(av); | |
2684 | AvREAL_off(av); | |
2685 | AvREIFY_on(av); | |
2686 | } | |
bdf02c57 DM |
2687 | defavp = &GvAV(PL_defgv); |
2688 | cx->blk_sub.savearray = *defavp; | |
2689 | *defavp = MUTABLE_AV(SvREFCNT_inc_simple_NN(av)); | |
dd2155a4 | 2690 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2691 | cx->blk_sub.argarray = av; |
bdf02c57 | 2692 | items = SP - MARK; |
a0d0e21e | 2693 | |
f5719c02 | 2694 | if (UNLIKELY(items - 1 > AvMAX(av))) { |
77d27ef6 SF |
2695 | SV **ary = AvALLOC(av); |
2696 | AvMAX(av) = items - 1; | |
2697 | Renew(ary, items, SV*); | |
2698 | AvALLOC(av) = ary; | |
2699 | AvARRAY(av) = ary; | |
2700 | } | |
2701 | ||
bdf02c57 | 2702 | Copy(MARK+1,AvARRAY(av),items,SV*); |
93965878 | 2703 | AvFILLp(av) = items - 1; |
1c846c1f | 2704 | |
b479c9f2 | 2705 | MARK = AvARRAY(av); |
a0d0e21e LW |
2706 | while (items--) { |
2707 | if (*MARK) | |
b479c9f2 | 2708 | { |
60779a30 DM |
2709 | if (SvPADTMP(*MARK)) { |
2710 | assert(!IS_PADGV(*MARK)); | |
b479c9f2 | 2711 | *MARK = sv_mortalcopy(*MARK); |
60779a30 | 2712 | } |
a0d0e21e | 2713 | SvTEMP_off(*MARK); |
b479c9f2 | 2714 | } |
a0d0e21e LW |
2715 | MARK++; |
2716 | } | |
2717 | } | |
b479c9f2 | 2718 | SAVETMPS; |
f5719c02 DM |
2719 | if (UNLIKELY((cx->blk_u16 & OPpENTERSUB_LVAL_MASK) == OPpLVAL_INTRO && |
2720 | !CvLVALUE(cv))) | |
da1dff94 | 2721 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
4a925ff6 GS |
2722 | /* warning must come *after* we fully set up the context |
2723 | * stuff so that __WARN__ handlers can safely dounwind() | |
2724 | * if they want to | |
2725 | */ | |
3689ad62 | 2726 | if (UNLIKELY(depth == PERL_SUB_DEPTH_WARN |
f5719c02 DM |
2727 | && ckWARN(WARN_RECURSION) |
2728 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub)))) | |
4a925ff6 | 2729 | sub_crush_depth(cv); |
a0d0e21e LW |
2730 | RETURNOP(CvSTART(cv)); |
2731 | } | |
f1025168 | 2732 | else { |
de935cc9 | 2733 | SSize_t markix = TOPMARK; |
f1025168 | 2734 | |
b479c9f2 | 2735 | SAVETMPS; |
3a76ca88 | 2736 | PUTBACK; |
f1025168 | 2737 | |
f5719c02 | 2738 | if (UNLIKELY(((PL_op->op_private |
4587c532 FC |
2739 | & PUSHSUB_GET_LVALUE_MASK(Perl_is_lvalue_sub) |
2740 | ) & OPpENTERSUB_LVAL_MASK) == OPpLVAL_INTRO && | |
f5719c02 | 2741 | !CvLVALUE(cv))) |
4587c532 FC |
2742 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2743 | ||
f5719c02 | 2744 | if (UNLIKELY(!hasargs && GvAV(PL_defgv))) { |
3a76ca88 RGS |
2745 | /* Need to copy @_ to stack. Alternative may be to |
2746 | * switch stack to @_, and copy return values | |
2747 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
2748 | AV * const av = GvAV(PL_defgv); | |
ad39f3a2 | 2749 | const SSize_t items = AvFILL(av) + 1; |
3a76ca88 RGS |
2750 | |
2751 | if (items) { | |
dd2a7f90 | 2752 | SSize_t i = 0; |
ad39f3a2 | 2753 | const bool m = cBOOL(SvRMAGICAL(av)); |
3a76ca88 RGS |
2754 | /* Mark is at the end of the stack. */ |
2755 | EXTEND(SP, items); | |
dd2a7f90 | 2756 | for (; i < items; ++i) |
ad39f3a2 FC |
2757 | { |
2758 | SV *sv; | |
2759 | if (m) { | |
2760 | SV ** const svp = av_fetch(av, i, 0); | |
2761 | sv = svp ? *svp : NULL; | |
2762 | } | |
2763 | else sv = AvARRAY(av)[i]; | |
2764 | if (sv) SP[i+1] = sv; | |
dd2a7f90 | 2765 | else { |
199f858d | 2766 | SP[i+1] = newSVavdefelem(av, i, 1); |
dd2a7f90 | 2767 | } |
ad39f3a2 | 2768 | } |
3a76ca88 RGS |
2769 | SP += items; |
2770 | PUTBACK ; | |
2771 | } | |
2772 | } | |
3455055f FC |
2773 | else { |
2774 | SV **mark = PL_stack_base + markix; | |
de935cc9 | 2775 | SSize_t items = SP - mark; |
3455055f FC |
2776 | while (items--) { |
2777 | mark++; | |
60779a30 DM |
2778 | if (*mark && SvPADTMP(*mark)) { |
2779 | assert(!IS_PADGV(*mark)); | |
3455055f | 2780 | *mark = sv_mortalcopy(*mark); |
60779a30 | 2781 | } |
3455055f FC |
2782 | } |
2783 | } | |
3a76ca88 | 2784 | /* We assume first XSUB in &DB::sub is the called one. */ |
f5719c02 | 2785 | if (UNLIKELY(PL_curcopdb)) { |
3a76ca88 RGS |
2786 | SAVEVPTR(PL_curcop); |
2787 | PL_curcop = PL_curcopdb; | |
2788 | PL_curcopdb = NULL; | |
2789 | } | |
2790 | /* Do we need to open block here? XXXX */ | |
72df79cf GF |
2791 | |
2792 | /* CvXSUB(cv) must not be NULL because newXS() refuses NULL xsub address */ | |
2793 | assert(CvXSUB(cv)); | |
16c91539 | 2794 | CvXSUB(cv)(aTHX_ cv); |
3a76ca88 RGS |
2795 | |
2796 | /* Enforce some sanity in scalar context. */ | |
89a18b40 DM |
2797 | if (gimme == G_SCALAR) { |
2798 | SV **svp = PL_stack_base + markix + 1; | |
2799 | if (svp != PL_stack_sp) { | |
2800 | *svp = svp > PL_stack_sp ? &PL_sv_undef : *PL_stack_sp; | |
2801 | PL_stack_sp = svp; | |
2802 | } | |
3a76ca88 | 2803 | } |
a57c6685 | 2804 | LEAVE; |
f1025168 NC |
2805 | return NORMAL; |
2806 | } | |
a0d0e21e LW |
2807 | } |
2808 | ||
44a8e56a | 2809 | void |
864dbfa3 | 2810 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2811 | { |
7918f24d NC |
2812 | PERL_ARGS_ASSERT_SUB_CRUSH_DEPTH; |
2813 | ||
44a8e56a | 2814 | if (CvANON(cv)) |
9014280d | 2815 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 2816 | else { |
07b2687d LM |
2817 | HEK *const hek = CvNAME_HEK(cv); |
2818 | SV *tmpstr; | |
2819 | if (hek) { | |
2820 | tmpstr = sv_2mortal(newSVhek(hek)); | |
2821 | } | |
2822 | else { | |
2823 | tmpstr = sv_newmortal(); | |
2824 | gv_efullname3(tmpstr, CvGV(cv), NULL); | |
2825 | } | |
35c1215d | 2826 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
be2597df | 2827 | SVfARG(tmpstr)); |
44a8e56a | 2828 | } |
2829 | } | |
2830 | ||
a0d0e21e LW |
2831 | PP(pp_aelem) |
2832 | { | |
97aff369 | 2833 | dVAR; dSP; |
a0d0e21e | 2834 | SV** svp; |
a3b680e6 | 2835 | SV* const elemsv = POPs; |
d804643f | 2836 | IV elem = SvIV(elemsv); |
502c6561 | 2837 | AV *const av = MUTABLE_AV(POPs); |
e1ec3a88 | 2838 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
bbfdc870 | 2839 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
4ad10a0b VP |
2840 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
2841 | bool preeminent = TRUE; | |
be6c24e0 | 2842 | SV *sv; |
a0d0e21e | 2843 | |
5d9574c1 | 2844 | if (UNLIKELY(SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC))) |
95b63a38 JH |
2845 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
2846 | "Use of reference \"%"SVf"\" as array index", | |
be2597df | 2847 | SVfARG(elemsv)); |
5d9574c1 | 2848 | if (UNLIKELY(SvTYPE(av) != SVt_PVAV)) |
a0d0e21e | 2849 | RETPUSHUNDEF; |
4ad10a0b | 2850 | |
5d9574c1 | 2851 | if (UNLIKELY(localizing)) { |
4ad10a0b VP |
2852 | MAGIC *mg; |
2853 | HV *stash; | |
2854 | ||
2855 | /* If we can determine whether the element exist, | |
2856 | * Try to preserve the existenceness of a tied array | |
2857 | * element by using EXISTS and DELETE if possible. | |
2858 | * Fallback to FETCH and STORE otherwise. */ | |
2859 | if (SvCANEXISTDELETE(av)) | |
2860 | preeminent = av_exists(av, elem); | |
2861 | } | |
2862 | ||
68dc0745 | 2863 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2864 | if (lval) { |
2b573ace | 2865 | #ifdef PERL_MALLOC_WRAP |
2b573ace | 2866 | if (SvUOK(elemsv)) { |
a9c4fd4e | 2867 | const UV uv = SvUV(elemsv); |
2b573ace JH |
2868 | elem = uv > IV_MAX ? IV_MAX : uv; |
2869 | } | |
2870 | else if (SvNOK(elemsv)) | |
2871 | elem = (IV)SvNV(elemsv); | |
a3b680e6 AL |
2872 | if (elem > 0) { |
2873 | static const char oom_array_extend[] = | |
2874 | "Out of memory during array extend"; /* Duplicated in av.c */ | |
2b573ace | 2875 | MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend); |
a3b680e6 | 2876 | } |
2b573ace | 2877 | #endif |
ce0d59fd | 2878 | if (!svp || !*svp) { |
bbfdc870 | 2879 | IV len; |
68dc0745 | 2880 | if (!defer) |
cea2e8a9 | 2881 | DIE(aTHX_ PL_no_aelem, elem); |
b9f2b683 | 2882 | len = av_tindex(av); |
199f858d | 2883 | mPUSHs(newSVavdefelem(av, |
bbfdc870 FC |
2884 | /* Resolve a negative index now, unless it points before the |
2885 | beginning of the array, in which case record it for error | |
2886 | reporting in magic_setdefelem. */ | |
199f858d FC |
2887 | elem < 0 && len + elem >= 0 ? len + elem : elem, |
2888 | 1)); | |
68dc0745 | 2889 | RETURN; |
2890 | } | |
5d9574c1 | 2891 | if (UNLIKELY(localizing)) { |
4ad10a0b VP |
2892 | if (preeminent) |
2893 | save_aelem(av, elem, svp); | |
2894 | else | |
2895 | SAVEADELETE(av, elem); | |
2896 | } | |
9026059d GG |
2897 | else if (PL_op->op_private & OPpDEREF) { |
2898 | PUSHs(vivify_ref(*svp, PL_op->op_private & OPpDEREF)); | |
2899 | RETURN; | |
2900 | } | |
a0d0e21e | 2901 | } |
3280af22 | 2902 | sv = (svp ? *svp : &PL_sv_undef); |
39cf747a | 2903 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 2904 | mg_get(sv); |
be6c24e0 | 2905 | PUSHs(sv); |
a0d0e21e LW |
2906 | RETURN; |
2907 | } | |
2908 | ||
9026059d | 2909 | SV* |
864dbfa3 | 2910 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 | 2911 | { |
7918f24d NC |
2912 | PERL_ARGS_ASSERT_VIVIFY_REF; |
2913 | ||
5b295bef | 2914 | SvGETMAGIC(sv); |
02a9e968 CS |
2915 | if (!SvOK(sv)) { |
2916 | if (SvREADONLY(sv)) | |
cb077ed2 | 2917 | Perl_croak_no_modify(); |
43230e26 | 2918 | prepare_SV_for_RV(sv); |
68dc0745 | 2919 | switch (to_what) { |
5f05dabc | 2920 | case OPpDEREF_SV: |
561b68a9 | 2921 | SvRV_set(sv, newSV(0)); |
5f05dabc | 2922 | break; |
2923 | case OPpDEREF_AV: | |
ad64d0ec | 2924 | SvRV_set(sv, MUTABLE_SV(newAV())); |
5f05dabc | 2925 | break; |
2926 | case OPpDEREF_HV: | |
ad64d0ec | 2927 | SvRV_set(sv, MUTABLE_SV(newHV())); |
5f05dabc | 2928 | break; |
2929 | } | |
02a9e968 CS |
2930 | SvROK_on(sv); |
2931 | SvSETMAGIC(sv); | |
7e482323 | 2932 | SvGETMAGIC(sv); |
02a9e968 | 2933 | } |
9026059d GG |
2934 | if (SvGMAGICAL(sv)) { |
2935 | /* copy the sv without magic to prevent magic from being | |
2936 | executed twice */ | |
2937 | SV* msv = sv_newmortal(); | |
2938 | sv_setsv_nomg(msv, sv); | |
2939 | return msv; | |
2940 | } | |
2941 | return sv; | |
02a9e968 CS |
2942 | } |
2943 | ||
a0d0e21e LW |
2944 | PP(pp_method) |
2945 | { | |
97aff369 | 2946 | dVAR; dSP; |
890ce7af | 2947 | SV* const sv = TOPs; |
f5d5a27c CS |
2948 | |
2949 | if (SvROK(sv)) { | |
890ce7af | 2950 | SV* const rsv = SvRV(sv); |
f5d5a27c CS |
2951 | if (SvTYPE(rsv) == SVt_PVCV) { |
2952 | SETs(rsv); | |
2953 | RETURN; | |
2954 | } | |
2955 | } | |
2956 | ||
4608196e | 2957 | SETs(method_common(sv, NULL)); |
f5d5a27c CS |
2958 | RETURN; |
2959 | } | |
2960 | ||
2961 | PP(pp_method_named) | |
2962 | { | |
97aff369 | 2963 | dVAR; dSP; |
890ce7af | 2964 | SV* const sv = cSVOP_sv; |
c158a4fd | 2965 | U32 hash = SvSHARED_HASH(sv); |
f5d5a27c CS |
2966 | |
2967 | XPUSHs(method_common(sv, &hash)); | |
2968 | RETURN; | |
2969 | } | |
2970 | ||
2971 | STATIC SV * | |
2972 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
2973 | { | |
97aff369 | 2974 | dVAR; |
a0d0e21e LW |
2975 | SV* ob; |
2976 | GV* gv; | |
56304f61 | 2977 | HV* stash; |
a0714e2c | 2978 | SV *packsv = NULL; |
f226e9be FC |
2979 | SV * const sv = PL_stack_base + TOPMARK == PL_stack_sp |
2980 | ? (Perl_croak(aTHX_ "Can't call method \"%"SVf"\" without a " | |
2981 | "package or object reference", SVfARG(meth)), | |
2982 | (SV *)NULL) | |
2983 | : *(PL_stack_base + TOPMARK + 1); | |
f5d5a27c | 2984 | |
7918f24d NC |
2985 | PERL_ARGS_ASSERT_METHOD_COMMON; |
2986 | ||
5d9574c1 | 2987 | if (UNLIKELY(!sv)) |
7156e69a | 2988 | undefined: |
a214957f VP |
2989 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" on an undefined value", |
2990 | SVfARG(meth)); | |
4f1b7578 | 2991 | |
5b295bef | 2992 | SvGETMAGIC(sv); |
a0d0e21e | 2993 | if (SvROK(sv)) |
ad64d0ec | 2994 | ob = MUTABLE_SV(SvRV(sv)); |
7156e69a | 2995 | else if (!SvOK(sv)) goto undefined; |
a77c16f7 FC |
2996 | else if (isGV_with_GP(sv)) { |
2997 | if (!GvIO(sv)) | |
2998 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" " | |
2999 | "without a package or object reference", | |
3000 | SVfARG(meth)); | |
3001 | ob = sv; | |
3002 | if (SvTYPE(ob) == SVt_PVLV && LvTYPE(ob) == 'y') { | |
3003 | assert(!LvTARGLEN(ob)); | |
3004 | ob = LvTARG(ob); | |
3005 | assert(ob); | |
3006 | } | |
3007 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV(ob)); | |
3008 | } | |
a0d0e21e | 3009 | else { |
89269094 | 3010 | /* this isn't a reference */ |
a0d0e21e | 3011 | GV* iogv; |
f937af42 | 3012 | STRLEN packlen; |
89269094 | 3013 | const char * const packname = SvPV_nomg_const(sv, packlen); |
b3ebc221 | 3014 | const bool packname_is_utf8 = !!SvUTF8(sv); |
89269094 | 3015 | const HE* const he = |
b3ebc221 NC |
3016 | (const HE *)hv_common( |
3017 | PL_stashcache, NULL, packname, packlen, | |
3018 | packname_is_utf8 ? HVhek_UTF8 : 0, 0, NULL, 0 | |
da6b625f FC |
3019 | ); |
3020 | ||
89269094 | 3021 | if (he) { |
5e6396ae | 3022 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
103f5a36 NC |
3023 | DEBUG_o(Perl_deb(aTHX_ "PL_stashcache hit %p for '%"SVf"'\n", |
3024 | stash, sv)); | |
081fc587 | 3025 | goto fetch; |
081fc587 AB |
3026 | } |
3027 | ||
89269094 | 3028 | if (!(iogv = gv_fetchpvn_flags( |
da6b625f FC |
3029 | packname, packlen, SVf_UTF8 * packname_is_utf8, SVt_PVIO |
3030 | )) || | |
ad64d0ec | 3031 | !(ob=MUTABLE_SV(GvIO(iogv)))) |
a0d0e21e | 3032 | { |
af09ea45 | 3033 | /* this isn't the name of a filehandle either */ |
89269094 | 3034 | if (!packlen) |
834a4ddd | 3035 | { |
7156e69a FC |
3036 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" " |
3037 | "without a package or object reference", | |
3038 | SVfARG(meth)); | |
834a4ddd | 3039 | } |
af09ea45 | 3040 | /* assume it's a package name */ |
f937af42 | 3041 | stash = gv_stashpvn(packname, packlen, packname_is_utf8 ? SVf_UTF8 : 0); |
0dae17bd GS |
3042 | if (!stash) |
3043 | packsv = sv; | |
081fc587 | 3044 | else { |
d4c19fe8 | 3045 | SV* const ref = newSViv(PTR2IV(stash)); |
f937af42 | 3046 | (void)hv_store(PL_stashcache, packname, |
c60dbbc3 | 3047 | packname_is_utf8 ? -(I32)packlen : (I32)packlen, ref, 0); |
103f5a36 NC |
3048 | DEBUG_o(Perl_deb(aTHX_ "PL_stashcache caching %p for '%"SVf"'\n", |
3049 | stash, sv)); | |
7e8961ec | 3050 | } |
ac91690f | 3051 | goto fetch; |
a0d0e21e | 3052 | } |
af09ea45 | 3053 | /* it _is_ a filehandle name -- replace with a reference */ |
ad64d0ec | 3054 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV(MUTABLE_SV(iogv))); |
a0d0e21e LW |
3055 | } |
3056 | ||
1f3ffe4c | 3057 | /* if we got here, ob should be an object or a glob */ |
f0d43078 | 3058 | if (!ob || !(SvOBJECT(ob) |
a77c16f7 | 3059 | || (isGV_with_GP(ob) |
159b6efe | 3060 | && (ob = MUTABLE_SV(GvIO((const GV *)ob))) |
f0d43078 GS |
3061 | && SvOBJECT(ob)))) |
3062 | { | |
b375e37b BF |
3063 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" on unblessed reference", |
3064 | SVfARG((SvSCREAM(meth) && strEQ(SvPV_nolen_const(meth),"isa")) | |
3065 | ? newSVpvs_flags("DOES", SVs_TEMP) | |
3066 | : meth)); | |
f0d43078 | 3067 | } |
a0d0e21e | 3068 | |
56304f61 | 3069 | stash = SvSTASH(ob); |
a0d0e21e | 3070 | |
ac91690f | 3071 | fetch: |
af09ea45 IK |
3072 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3073 | gv_fetchmethod can cope (it seems they can) */ | |
3074 | ||
f5d5a27c CS |
3075 | /* shortcut for simple names */ |
3076 | if (hashp) { | |
b464bac0 | 3077 | const HE* const he = hv_fetch_ent(stash, meth, 0, *hashp); |
f5d5a27c | 3078 | if (he) { |
159b6efe | 3079 | gv = MUTABLE_GV(HeVAL(he)); |
316ebaf2 | 3080 | assert(stash); |
f5d5a27c | 3081 | if (isGV(gv) && GvCV(gv) && |
e1a479c5 | 3082 | (!GvCVGEN(gv) || GvCVGEN(gv) |
dd69841b | 3083 | == (PL_sub_generation + HvMROMETA(stash)->cache_gen))) |
ad64d0ec | 3084 | return MUTABLE_SV(GvCV(gv)); |
f5d5a27c CS |
3085 | } |
3086 | } | |
3087 | ||
316ebaf2 | 3088 | assert(stash || packsv); |
f937af42 | 3089 | gv = gv_fetchmethod_sv_flags(stash ? stash : MUTABLE_HV(packsv), |
316ebaf2 | 3090 | meth, GV_AUTOLOAD | GV_CROAK); |
256d1bb2 | 3091 | assert(gv); |
9b9d0b15 | 3092 | |
ad64d0ec | 3093 | return isGV(gv) ? MUTABLE_SV(GvCV(gv)) : MUTABLE_SV(gv); |
a0d0e21e | 3094 | } |
241d1a3b NC |
3095 | |
3096 | /* | |
3097 | * Local variables: | |
3098 | * c-indentation-style: bsd | |
3099 | * c-basic-offset: 4 | |
14d04a33 | 3100 | * indent-tabs-mode: nil |
241d1a3b NC |
3101 | * End: |
3102 | * | |
14d04a33 | 3103 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3104 | */ |