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 | { | |
39644a26 | 42 | dSP; |
996c9baa | 43 | XPUSHs(cSVOP_sv); |
a0d0e21e LW |
44 | RETURN; |
45 | } | |
46 | ||
47 | PP(pp_nextstate) | |
48 | { | |
533c011a | 49 | PL_curcop = (COP*)PL_op; |
ff2a62e0 | 50 | PL_sawalias = 0; |
a0d0e21e | 51 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 52 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 53 | FREETMPS; |
f410a211 | 54 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
55 | return NORMAL; |
56 | } | |
57 | ||
58 | PP(pp_gvsv) | |
59 | { | |
39644a26 | 60 | dSP; |
924508f0 | 61 | EXTEND(SP,1); |
5d9574c1 | 62 | if (UNLIKELY(PL_op->op_private & OPpLVAL_INTRO)) |
1d7c1841 | 63 | PUSHs(save_scalar(cGVOP_gv)); |
a0d0e21e | 64 | else |
c69033f2 | 65 | PUSHs(GvSVn(cGVOP_gv)); |
ff2a62e0 FC |
66 | if (GvREFCNT(cGVOP_gv) > 1 || GvALIASED_SV(cGVOP_gv)) |
67 | PL_sawalias = TRUE; | |
a0d0e21e LW |
68 | RETURN; |
69 | } | |
70 | ||
b1c05ba5 DM |
71 | |
72 | /* also used for: pp_lineseq() pp_regcmaybe() pp_scalar() pp_scope() */ | |
73 | ||
a0d0e21e LW |
74 | PP(pp_null) |
75 | { | |
76 | return NORMAL; | |
77 | } | |
78 | ||
3dd9d4e4 FC |
79 | /* This is sometimes called directly by pp_coreargs, pp_grepstart and |
80 | amagic_call. */ | |
a0d0e21e LW |
81 | PP(pp_pushmark) |
82 | { | |
3280af22 | 83 | PUSHMARK(PL_stack_sp); |
a0d0e21e LW |
84 | return NORMAL; |
85 | } | |
86 | ||
87 | PP(pp_stringify) | |
88 | { | |
20b7effb | 89 | dSP; dTARGET; |
4cc783ef DD |
90 | SV * const sv = TOPs; |
91 | SETs(TARG); | |
92 | sv_copypv(TARG, sv); | |
93 | SvSETMAGIC(TARG); | |
94 | /* no PUTBACK, SETs doesn't inc/dec SP */ | |
95 | return NORMAL; | |
a0d0e21e LW |
96 | } |
97 | ||
98 | PP(pp_gv) | |
99 | { | |
20b7effb | 100 | dSP; |
ad64d0ec | 101 | XPUSHs(MUTABLE_SV(cGVOP_gv)); |
ff2a62e0 FC |
102 | if (isGV(cGVOP_gv) |
103 | && (GvREFCNT(cGVOP_gv) > 1 || GvALIASED_SV(cGVOP_gv))) | |
104 | PL_sawalias = TRUE; | |
a0d0e21e LW |
105 | RETURN; |
106 | } | |
107 | ||
b1c05ba5 DM |
108 | |
109 | /* also used for: pp_andassign() */ | |
110 | ||
a0d0e21e LW |
111 | PP(pp_and) |
112 | { | |
f410a211 | 113 | PERL_ASYNC_CHECK(); |
4cc783ef DD |
114 | { |
115 | /* SP is not used to remove a variable that is saved across the | |
116 | sv_2bool_flags call in SvTRUE_NN, if a RISC/CISC or low/high machine | |
117 | register or load/store vs direct mem ops macro is introduced, this | |
118 | should be a define block between direct PL_stack_sp and dSP operations, | |
119 | presently, using PL_stack_sp is bias towards CISC cpus */ | |
120 | SV * const sv = *PL_stack_sp; | |
121 | if (!SvTRUE_NN(sv)) | |
122 | return NORMAL; | |
123 | else { | |
124 | if (PL_op->op_type == OP_AND) | |
125 | --PL_stack_sp; | |
126 | return cLOGOP->op_other; | |
127 | } | |
a0d0e21e LW |
128 | } |
129 | } | |
130 | ||
131 | PP(pp_sassign) | |
132 | { | |
20b7effb | 133 | dSP; |
3e75a3c4 RU |
134 | /* sassign keeps its args in the optree traditionally backwards. |
135 | So we pop them differently. | |
136 | */ | |
137 | SV *left = POPs; SV *right = TOPs; | |
748a9306 | 138 | |
533c011a | 139 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
0bd48802 AL |
140 | SV * const temp = left; |
141 | left = right; right = temp; | |
a0d0e21e | 142 | } |
5d9574c1 | 143 | if (TAINTING_get && UNLIKELY(TAINT_get) && !SvTAINTED(right)) |
a0d0e21e | 144 | TAINT_NOT; |
5d9574c1 DM |
145 | if (UNLIKELY(PL_op->op_private & OPpASSIGN_CV_TO_GV)) { |
146 | /* *foo =\&bar */ | |
3e75a3c4 | 147 | SV * const cv = SvRV(right); |
e26df76a | 148 | const U32 cv_type = SvTYPE(cv); |
3e75a3c4 | 149 | const bool is_gv = isGV_with_GP(left); |
6136c704 | 150 | const bool got_coderef = cv_type == SVt_PVCV || cv_type == SVt_PVFM; |
e26df76a NC |
151 | |
152 | if (!got_coderef) { | |
153 | assert(SvROK(cv)); | |
154 | } | |
155 | ||
3e75a3c4 RU |
156 | /* Can do the optimisation if left (LVALUE) is not a typeglob, |
157 | right (RVALUE) is a reference to something, and we're in void | |
e26df76a | 158 | context. */ |
13be902c | 159 | if (!got_coderef && !is_gv && GIMME_V == G_VOID) { |
e26df76a | 160 | /* Is the target symbol table currently empty? */ |
3e75a3c4 | 161 | GV * const gv = gv_fetchsv_nomg(left, GV_NOINIT, SVt_PVGV); |
bb112e5a | 162 | if (SvTYPE(gv) != SVt_PVGV && !SvOK(gv)) { |
e26df76a NC |
163 | /* Good. Create a new proxy constant subroutine in the target. |
164 | The gv becomes a(nother) reference to the constant. */ | |
165 | SV *const value = SvRV(cv); | |
166 | ||
ad64d0ec | 167 | SvUPGRADE(MUTABLE_SV(gv), SVt_IV); |
1ccdb730 | 168 | SvPCS_IMPORTED_on(gv); |
e26df76a | 169 | SvRV_set(gv, value); |
b37c2d43 | 170 | SvREFCNT_inc_simple_void(value); |
3e75a3c4 | 171 | SETs(left); |
e26df76a NC |
172 | RETURN; |
173 | } | |
174 | } | |
175 | ||
176 | /* Need to fix things up. */ | |
13be902c | 177 | if (!is_gv) { |
e26df76a | 178 | /* Need to fix GV. */ |
3e75a3c4 | 179 | left = MUTABLE_SV(gv_fetchsv_nomg(left,GV_ADD, SVt_PVGV)); |
e26df76a NC |
180 | } |
181 | ||
182 | if (!got_coderef) { | |
183 | /* We've been returned a constant rather than a full subroutine, | |
184 | but they expect a subroutine reference to apply. */ | |
53a42478 | 185 | if (SvROK(cv)) { |
d343c3ef | 186 | ENTER_with_name("sassign_coderef"); |
53a42478 NC |
187 | SvREFCNT_inc_void(SvRV(cv)); |
188 | /* newCONSTSUB takes a reference count on the passed in SV | |
189 | from us. We set the name to NULL, otherwise we get into | |
190 | all sorts of fun as the reference to our new sub is | |
191 | donated to the GV that we're about to assign to. | |
192 | */ | |
3e75a3c4 | 193 | SvRV_set(right, MUTABLE_SV(newCONSTSUB(GvSTASH(left), NULL, |
ad64d0ec | 194 | SvRV(cv)))); |
fc2b2dca | 195 | SvREFCNT_dec_NN(cv); |
d343c3ef | 196 | LEAVE_with_name("sassign_coderef"); |
53a42478 NC |
197 | } else { |
198 | /* What can happen for the corner case *{"BONK"} = \&{"BONK"}; | |
199 | is that | |
200 | First: ops for \&{"BONK"}; return us the constant in the | |
201 | symbol table | |
202 | Second: ops for *{"BONK"} cause that symbol table entry | |
203 | (and our reference to it) to be upgraded from RV | |
204 | to typeblob) | |
205 | Thirdly: We get here. cv is actually PVGV now, and its | |
206 | GvCV() is actually the subroutine we're looking for | |
207 | ||
208 | So change the reference so that it points to the subroutine | |
209 | of that typeglob, as that's what they were after all along. | |
210 | */ | |
159b6efe | 211 | GV *const upgraded = MUTABLE_GV(cv); |
53a42478 NC |
212 | CV *const source = GvCV(upgraded); |
213 | ||
214 | assert(source); | |
215 | assert(CvFLAGS(source) & CVf_CONST); | |
216 | ||
217 | SvREFCNT_inc_void(source); | |
fc2b2dca | 218 | SvREFCNT_dec_NN(upgraded); |
3e75a3c4 | 219 | SvRV_set(right, MUTABLE_SV(source)); |
53a42478 | 220 | } |
e26df76a | 221 | } |
53a42478 | 222 | |
e26df76a | 223 | } |
8fe85e3f | 224 | if ( |
5d9574c1 | 225 | UNLIKELY(SvTEMP(left)) && !SvSMAGICAL(left) && SvREFCNT(left) == 1 && |
3e75a3c4 | 226 | (!isGV_with_GP(left) || SvFAKE(left)) && ckWARN(WARN_MISC) |
8fe85e3f FC |
227 | ) |
228 | Perl_warner(aTHX_ | |
229 | packWARN(WARN_MISC), "Useless assignment to a temporary" | |
230 | ); | |
3e75a3c4 RU |
231 | SvSetMagicSV(left, right); |
232 | SETs(left); | |
a0d0e21e LW |
233 | RETURN; |
234 | } | |
235 | ||
236 | PP(pp_cond_expr) | |
237 | { | |
20b7effb | 238 | dSP; |
f410a211 | 239 | PERL_ASYNC_CHECK(); |
a0d0e21e | 240 | if (SvTRUEx(POPs)) |
1a67a97c | 241 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 242 | else |
1a67a97c | 243 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
244 | } |
245 | ||
246 | PP(pp_unstack) | |
247 | { | |
8f3964af | 248 | PERL_ASYNC_CHECK(); |
a0d0e21e | 249 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 250 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 251 | FREETMPS; |
eae48c89 Z |
252 | if (!(PL_op->op_flags & OPf_SPECIAL)) { |
253 | I32 oldsave = PL_scopestack[PL_scopestack_ix - 1]; | |
254 | LEAVE_SCOPE(oldsave); | |
255 | } | |
a0d0e21e LW |
256 | return NORMAL; |
257 | } | |
258 | ||
a0d0e21e LW |
259 | PP(pp_concat) |
260 | { | |
20b7effb | 261 | dSP; dATARGET; tryAMAGICbin_MG(concat_amg, AMGf_assign); |
748a9306 LW |
262 | { |
263 | dPOPTOPssrl; | |
8d6d96c1 HS |
264 | bool lbyte; |
265 | STRLEN rlen; | |
d4c19fe8 | 266 | const char *rpv = NULL; |
a6b599c7 | 267 | bool rbyte = FALSE; |
a9c4fd4e | 268 | bool rcopied = FALSE; |
8d6d96c1 | 269 | |
6f1401dc DM |
270 | if (TARG == right && right != left) { /* $r = $l.$r */ |
271 | rpv = SvPV_nomg_const(right, rlen); | |
c75ab21a | 272 | rbyte = !DO_UTF8(right); |
59cd0e26 | 273 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
349d4f2f | 274 | rpv = SvPV_const(right, rlen); /* no point setting UTF-8 here */ |
db79b45b | 275 | rcopied = TRUE; |
8d6d96c1 | 276 | } |
7889fe52 | 277 | |
89734059 | 278 | if (TARG != left) { /* not $l .= $r */ |
a9c4fd4e | 279 | STRLEN llen; |
6f1401dc | 280 | const char* const lpv = SvPV_nomg_const(left, llen); |
90f5826e | 281 | lbyte = !DO_UTF8(left); |
8d6d96c1 HS |
282 | sv_setpvn(TARG, lpv, llen); |
283 | if (!lbyte) | |
284 | SvUTF8_on(TARG); | |
285 | else | |
286 | SvUTF8_off(TARG); | |
287 | } | |
18ea7bf2 S |
288 | else { /* $l .= $r and left == TARG */ |
289 | if (!SvOK(left)) { | |
89734059 | 290 | if (left == right && ckWARN(WARN_UNINITIALIZED)) /* $l .= $l */ |
c75ab21a | 291 | report_uninit(right); |
76f68e9b | 292 | sv_setpvs(left, ""); |
c75ab21a | 293 | } |
18ea7bf2 S |
294 | else { |
295 | SvPV_force_nomg_nolen(left); | |
296 | } | |
583a5589 | 297 | lbyte = !DO_UTF8(left); |
90f5826e | 298 | if (IN_BYTES) |
18ea7bf2 | 299 | SvUTF8_off(left); |
8d6d96c1 | 300 | } |
a12c0f56 | 301 | |
c75ab21a | 302 | if (!rcopied) { |
6f1401dc | 303 | rpv = SvPV_nomg_const(right, rlen); |
c75ab21a RH |
304 | rbyte = !DO_UTF8(right); |
305 | } | |
8d6d96c1 HS |
306 | if (lbyte != rbyte) { |
307 | if (lbyte) | |
308 | sv_utf8_upgrade_nomg(TARG); | |
309 | else { | |
db79b45b | 310 | if (!rcopied) |
59cd0e26 | 311 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
8d6d96c1 | 312 | sv_utf8_upgrade_nomg(right); |
6f1401dc | 313 | rpv = SvPV_nomg_const(right, rlen); |
69b47968 | 314 | } |
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 ($lex1,@lex2,...) */ |
357 | ||
358 | PP(pp_padrange) | |
359 | { | |
20b7effb | 360 | dSP; |
a7fd8ef6 DM |
361 | PADOFFSET base = PL_op->op_targ; |
362 | int count = (int)(PL_op->op_private) & OPpPADRANGE_COUNTMASK; | |
363 | int i; | |
d5524600 DM |
364 | if (PL_op->op_flags & OPf_SPECIAL) { |
365 | /* fake the RHS of my ($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); | |
6d59e610 | 384 | STATIC_ASSERT_STMT(OPpPADRANGE_COUNTMASK + 1 == (1 << OPpPADRANGE_COUNTSHIFT)); |
4e09461c | 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 | { | |
20b7effb | 401 | dSP; |
6c28b496 DD |
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 | { | |
30901a8a FC |
431 | dSP; |
432 | if (TOPs) { | |
433 | SvGETMAGIC(TOPs); | |
fc99edcf | 434 | tryAMAGICunTARGETlist(iter_amg, 0); |
30901a8a FC |
435 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
436 | } | |
437 | else PL_last_in_gv = PL_argvgv, PL_stack_sp--; | |
6e592b3a BM |
438 | if (!isGV_with_GP(PL_last_in_gv)) { |
439 | if (SvROK(PL_last_in_gv) && isGV_with_GP(SvRV(PL_last_in_gv))) | |
159b6efe | 440 | PL_last_in_gv = MUTABLE_GV(SvRV(PL_last_in_gv)); |
8efb3254 | 441 | else { |
f5284f61 | 442 | dSP; |
ad64d0ec | 443 | XPUSHs(MUTABLE_SV(PL_last_in_gv)); |
f5284f61 | 444 | PUTBACK; |
897d3989 | 445 | Perl_pp_rv2gv(aTHX); |
159b6efe | 446 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
84ee769f FC |
447 | if (PL_last_in_gv == (GV *)&PL_sv_undef) |
448 | PL_last_in_gv = NULL; | |
449 | else | |
450 | assert(isGV_with_GP(PL_last_in_gv)); | |
f5284f61 IZ |
451 | } |
452 | } | |
a0d0e21e LW |
453 | return do_readline(); |
454 | } | |
455 | ||
456 | PP(pp_eq) | |
457 | { | |
20b7effb | 458 | dSP; |
33efebe6 DM |
459 | SV *left, *right; |
460 | ||
a42d0242 | 461 | tryAMAGICbin_MG(eq_amg, AMGf_set|AMGf_numeric); |
33efebe6 DM |
462 | right = POPs; |
463 | left = TOPs; | |
464 | SETs(boolSV( | |
465 | (SvIOK_notUV(left) && SvIOK_notUV(right)) | |
466 | ? (SvIVX(left) == SvIVX(right)) | |
467 | : ( do_ncmp(left, right) == 0) | |
468 | )); | |
469 | RETURN; | |
a0d0e21e LW |
470 | } |
471 | ||
b1c05ba5 DM |
472 | |
473 | /* also used for: pp_i_predec() pp_i_preinc() pp_predec() */ | |
474 | ||
a0d0e21e LW |
475 | PP(pp_preinc) |
476 | { | |
20b7effb | 477 | dSP; |
17058fe0 FC |
478 | const bool inc = |
479 | PL_op->op_type == OP_PREINC || PL_op->op_type == OP_I_PREINC; | |
5d9574c1 | 480 | if (UNLIKELY(SvTYPE(TOPs) >= SVt_PVAV || (isGV_with_GP(TOPs) && !SvFAKE(TOPs)))) |
cb077ed2 | 481 | Perl_croak_no_modify(); |
5d9574c1 | 482 | if (LIKELY(!SvREADONLY(TOPs) && !SvGMAGICAL(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs)) |
17058fe0 | 483 | && SvIVX(TOPs) != (inc ? IV_MAX : IV_MIN)) |
55497cff | 484 | { |
17058fe0 | 485 | SvIV_set(TOPs, SvIVX(TOPs) + (inc ? 1 : -1)); |
55497cff | 486 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 487 | } |
28e5dec8 | 488 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
17058fe0 FC |
489 | if (inc) sv_inc(TOPs); |
490 | else sv_dec(TOPs); | |
a0d0e21e LW |
491 | SvSETMAGIC(TOPs); |
492 | return NORMAL; | |
493 | } | |
494 | ||
b1c05ba5 DM |
495 | |
496 | /* also used for: pp_orassign() */ | |
497 | ||
a0d0e21e LW |
498 | PP(pp_or) |
499 | { | |
20b7effb | 500 | dSP; |
f410a211 | 501 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
502 | if (SvTRUE(TOPs)) |
503 | RETURN; | |
504 | else { | |
c960fc3b SP |
505 | if (PL_op->op_type == OP_OR) |
506 | --SP; | |
a0d0e21e LW |
507 | RETURNOP(cLOGOP->op_other); |
508 | } | |
509 | } | |
510 | ||
b1c05ba5 DM |
511 | |
512 | /* also used for: pp_dor() pp_dorassign() */ | |
513 | ||
25a55bd7 | 514 | PP(pp_defined) |
c963b151 | 515 | { |
20b7effb | 516 | dSP; |
eb578fdb | 517 | SV* sv; |
6136c704 | 518 | bool defined; |
25a55bd7 | 519 | const int op_type = PL_op->op_type; |
ea5195b7 | 520 | const bool is_dor = (op_type == OP_DOR || op_type == OP_DORASSIGN); |
c963b151 | 521 | |
6136c704 | 522 | if (is_dor) { |
f410a211 | 523 | PERL_ASYNC_CHECK(); |
25a55bd7 | 524 | sv = TOPs; |
5d9574c1 | 525 | if (UNLIKELY(!sv || !SvANY(sv))) { |
2bd49cfc NC |
526 | if (op_type == OP_DOR) |
527 | --SP; | |
25a55bd7 SP |
528 | RETURNOP(cLOGOP->op_other); |
529 | } | |
b7c44293 RGS |
530 | } |
531 | else { | |
532 | /* OP_DEFINED */ | |
25a55bd7 | 533 | sv = POPs; |
5d9574c1 | 534 | if (UNLIKELY(!sv || !SvANY(sv))) |
25a55bd7 | 535 | RETPUSHNO; |
b7c44293 | 536 | } |
25a55bd7 | 537 | |
6136c704 | 538 | defined = FALSE; |
c963b151 BD |
539 | switch (SvTYPE(sv)) { |
540 | case SVt_PVAV: | |
541 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 542 | defined = TRUE; |
c963b151 BD |
543 | break; |
544 | case SVt_PVHV: | |
545 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 546 | defined = TRUE; |
c963b151 BD |
547 | break; |
548 | case SVt_PVCV: | |
549 | if (CvROOT(sv) || CvXSUB(sv)) | |
25a55bd7 | 550 | defined = TRUE; |
c963b151 BD |
551 | break; |
552 | default: | |
5b295bef | 553 | SvGETMAGIC(sv); |
c963b151 | 554 | if (SvOK(sv)) |
25a55bd7 | 555 | defined = TRUE; |
6136c704 | 556 | break; |
c963b151 | 557 | } |
6136c704 AL |
558 | |
559 | if (is_dor) { | |
c960fc3b SP |
560 | if(defined) |
561 | RETURN; | |
562 | if(op_type == OP_DOR) | |
563 | --SP; | |
25a55bd7 | 564 | RETURNOP(cLOGOP->op_other); |
25a55bd7 | 565 | } |
d9aa96a4 SP |
566 | /* assuming OP_DEFINED */ |
567 | if(defined) | |
568 | RETPUSHYES; | |
569 | RETPUSHNO; | |
c963b151 BD |
570 | } |
571 | ||
a0d0e21e LW |
572 | PP(pp_add) |
573 | { | |
20b7effb | 574 | dSP; dATARGET; bool useleft; SV *svl, *svr; |
6f1401dc DM |
575 | tryAMAGICbin_MG(add_amg, AMGf_assign|AMGf_numeric); |
576 | svr = TOPs; | |
577 | svl = TOPm1s; | |
578 | ||
800401ee | 579 | useleft = USE_LEFT(svl); |
28e5dec8 JH |
580 | #ifdef PERL_PRESERVE_IVUV |
581 | /* We must see if we can perform the addition with integers if possible, | |
582 | as the integer code detects overflow while the NV code doesn't. | |
583 | If either argument hasn't had a numeric conversion yet attempt to get | |
584 | the IV. It's important to do this now, rather than just assuming that | |
585 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
586 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
587 | integer in case the second argument is IV=9223372036854775806 | |
588 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
589 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
590 | ||
591 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
592 | fp maths for integer values. |
593 | ||
a00b5bd3 | 594 | How to detect overflow? |
7dca457a NC |
595 | |
596 | C 99 section 6.2.6.1 says | |
597 | ||
598 | The range of nonnegative values of a signed integer type is a subrange | |
599 | of the corresponding unsigned integer type, and the representation of | |
600 | the same value in each type is the same. A computation involving | |
601 | unsigned operands can never overflow, because a result that cannot be | |
602 | represented by the resulting unsigned integer type is reduced modulo | |
603 | the number that is one greater than the largest value that can be | |
604 | represented by the resulting type. | |
605 | ||
606 | (the 9th paragraph) | |
607 | ||
608 | which I read as "unsigned ints wrap." | |
609 | ||
610 | signed integer overflow seems to be classed as "exception condition" | |
611 | ||
612 | If an exceptional condition occurs during the evaluation of an | |
613 | expression (that is, if the result is not mathematically defined or not | |
614 | in the range of representable values for its type), the behavior is | |
615 | undefined. | |
616 | ||
617 | (6.5, the 5th paragraph) | |
618 | ||
619 | I had assumed that on 2s complement machines signed arithmetic would | |
620 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
621 | everything perl builds on would be happy. After much wailing and | |
622 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
623 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
624 | unsigned code below is actually shorter than the old code. :-) | |
625 | */ | |
626 | ||
01f91bf2 | 627 | if (SvIV_please_nomg(svr)) { |
28e5dec8 JH |
628 | /* Unless the left argument is integer in range we are going to have to |
629 | use NV maths. Hence only attempt to coerce the right argument if | |
630 | we know the left is integer. */ | |
eb578fdb | 631 | UV auv = 0; |
9c5ffd7c | 632 | bool auvok = FALSE; |
7dca457a NC |
633 | bool a_valid = 0; |
634 | ||
28e5dec8 | 635 | if (!useleft) { |
7dca457a NC |
636 | auv = 0; |
637 | a_valid = auvok = 1; | |
638 | /* left operand is undef, treat as zero. + 0 is identity, | |
639 | Could SETi or SETu right now, but space optimise by not adding | |
640 | lots of code to speed up what is probably a rarish case. */ | |
641 | } else { | |
642 | /* Left operand is defined, so is it IV? */ | |
01f91bf2 | 643 | if (SvIV_please_nomg(svl)) { |
800401ee JH |
644 | if ((auvok = SvUOK(svl))) |
645 | auv = SvUVX(svl); | |
7dca457a | 646 | else { |
eb578fdb | 647 | const IV aiv = SvIVX(svl); |
7dca457a NC |
648 | if (aiv >= 0) { |
649 | auv = aiv; | |
650 | auvok = 1; /* Now acting as a sign flag. */ | |
53e2bfb7 DM |
651 | } else { |
652 | auv = (aiv == IV_MIN) ? (UV)aiv : (UV)(-aiv); | |
7dca457a NC |
653 | } |
654 | } | |
655 | a_valid = 1; | |
28e5dec8 JH |
656 | } |
657 | } | |
7dca457a NC |
658 | if (a_valid) { |
659 | bool result_good = 0; | |
660 | UV result; | |
eb578fdb | 661 | UV buv; |
800401ee | 662 | bool buvok = SvUOK(svr); |
a00b5bd3 | 663 | |
7dca457a | 664 | if (buvok) |
800401ee | 665 | buv = SvUVX(svr); |
7dca457a | 666 | else { |
eb578fdb | 667 | const IV biv = SvIVX(svr); |
7dca457a NC |
668 | if (biv >= 0) { |
669 | buv = biv; | |
670 | buvok = 1; | |
671 | } else | |
53e2bfb7 | 672 | buv = (biv == IV_MIN) ? (UV)biv : (UV)(-biv); |
7dca457a NC |
673 | } |
674 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 675 | else "IV" now, independent of how it came in. |
7dca457a NC |
676 | if a, b represents positive, A, B negative, a maps to -A etc |
677 | a + b => (a + b) | |
678 | A + b => -(a - b) | |
679 | a + B => (a - b) | |
680 | A + B => -(a + b) | |
681 | all UV maths. negate result if A negative. | |
682 | add if signs same, subtract if signs differ. */ | |
683 | ||
684 | if (auvok ^ buvok) { | |
685 | /* Signs differ. */ | |
686 | if (auv >= buv) { | |
687 | result = auv - buv; | |
688 | /* Must get smaller */ | |
689 | if (result <= auv) | |
690 | result_good = 1; | |
691 | } else { | |
692 | result = buv - auv; | |
693 | if (result <= buv) { | |
694 | /* result really should be -(auv-buv). as its negation | |
695 | of true value, need to swap our result flag */ | |
696 | auvok = !auvok; | |
697 | result_good = 1; | |
28e5dec8 JH |
698 | } |
699 | } | |
7dca457a NC |
700 | } else { |
701 | /* Signs same */ | |
702 | result = auv + buv; | |
703 | if (result >= auv) | |
704 | result_good = 1; | |
705 | } | |
706 | if (result_good) { | |
707 | SP--; | |
708 | if (auvok) | |
28e5dec8 | 709 | SETu( result ); |
7dca457a NC |
710 | else { |
711 | /* Negate result */ | |
712 | if (result <= (UV)IV_MIN) | |
53e2bfb7 DM |
713 | SETi(result == (UV)IV_MIN |
714 | ? IV_MIN : -(IV)result); | |
7dca457a NC |
715 | else { |
716 | /* result valid, but out of range for IV. */ | |
717 | SETn( -(NV)result ); | |
28e5dec8 JH |
718 | } |
719 | } | |
7dca457a NC |
720 | RETURN; |
721 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
722 | } |
723 | } | |
724 | #endif | |
a0d0e21e | 725 | { |
6f1401dc | 726 | NV value = SvNV_nomg(svr); |
4efa5a16 | 727 | (void)POPs; |
28e5dec8 JH |
728 | if (!useleft) { |
729 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
730 | SETn(value); | |
731 | RETURN; | |
732 | } | |
6f1401dc | 733 | SETn( value + SvNV_nomg(svl) ); |
28e5dec8 | 734 | RETURN; |
a0d0e21e LW |
735 | } |
736 | } | |
737 | ||
b1c05ba5 DM |
738 | |
739 | /* also used for: pp_aelemfast_lex() */ | |
740 | ||
a0d0e21e LW |
741 | PP(pp_aelemfast) |
742 | { | |
20b7effb | 743 | dSP; |
93bad3fd | 744 | AV * const av = PL_op->op_type == OP_AELEMFAST_LEX |
8f878375 | 745 | ? MUTABLE_AV(PAD_SV(PL_op->op_targ)) : GvAVn(cGVOP_gv); |
a3b680e6 | 746 | const U32 lval = PL_op->op_flags & OPf_MOD; |
b024352e | 747 | SV** const svp = av_fetch(av, (I8)PL_op->op_private, lval); |
3280af22 | 748 | SV *sv = (svp ? *svp : &PL_sv_undef); |
b024352e DM |
749 | |
750 | if (UNLIKELY(!svp && lval)) | |
751 | DIE(aTHX_ PL_no_aelem, (int)(I8)PL_op->op_private); | |
752 | ||
6ff81951 | 753 | EXTEND(SP, 1); |
39cf747a | 754 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 755 | mg_get(sv); |
be6c24e0 | 756 | PUSHs(sv); |
a0d0e21e LW |
757 | RETURN; |
758 | } | |
759 | ||
760 | PP(pp_join) | |
761 | { | |
20b7effb | 762 | dSP; dMARK; dTARGET; |
a0d0e21e LW |
763 | MARK++; |
764 | do_join(TARG, *MARK, MARK, SP); | |
765 | SP = MARK; | |
766 | SETs(TARG); | |
767 | RETURN; | |
768 | } | |
769 | ||
770 | PP(pp_pushre) | |
771 | { | |
20b7effb | 772 | dSP; |
44a8e56a | 773 | #ifdef DEBUGGING |
774 | /* | |
775 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
776 | * will be enough to hold an OP*. | |
777 | */ | |
c4420975 | 778 | SV* const sv = sv_newmortal(); |
44a8e56a | 779 | sv_upgrade(sv, SVt_PVLV); |
780 | LvTYPE(sv) = '/'; | |
533c011a | 781 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 782 | XPUSHs(sv); |
783 | #else | |
ad64d0ec | 784 | XPUSHs(MUTABLE_SV(PL_op)); |
44a8e56a | 785 | #endif |
a0d0e21e LW |
786 | RETURN; |
787 | } | |
788 | ||
789 | /* Oversized hot code. */ | |
790 | ||
b1c05ba5 DM |
791 | /* also used for: pp_say() */ |
792 | ||
a0d0e21e LW |
793 | PP(pp_print) |
794 | { | |
20b7effb | 795 | dSP; dMARK; dORIGMARK; |
eb578fdb | 796 | PerlIO *fp; |
236988e4 | 797 | MAGIC *mg; |
159b6efe NC |
798 | GV * const gv |
799 | = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv; | |
9c9f25b8 | 800 | IO *io = GvIO(gv); |
5b468f54 | 801 | |
9c9f25b8 | 802 | if (io |
ad64d0ec | 803 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
5b468f54 | 804 | { |
01bb7c6d | 805 | had_magic: |
68dc0745 | 806 | if (MARK == ORIGMARK) { |
1c846c1f | 807 | /* If using default handle then we need to make space to |
a60c0954 NIS |
808 | * pass object as 1st arg, so move other args up ... |
809 | */ | |
4352c267 | 810 | MEXTEND(SP, 1); |
68dc0745 | 811 | ++MARK; |
812 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
813 | ++SP; | |
814 | } | |
3e0cb5de | 815 | return Perl_tied_method(aTHX_ SV_CONST(PRINT), mark - 1, MUTABLE_SV(io), |
94bc412f NC |
816 | mg, |
817 | (G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK | |
818 | | (PL_op->op_type == OP_SAY | |
819 | ? TIED_METHOD_SAY : 0)), sp - mark); | |
236988e4 | 820 | } |
9c9f25b8 | 821 | if (!io) { |
68b590d9 | 822 | if ( gv && GvEGVx(gv) && (io = GvIO(GvEGV(gv))) |
ad64d0ec | 823 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
01bb7c6d | 824 | goto had_magic; |
51087808 | 825 | report_evil_fh(gv); |
93189314 | 826 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
827 | goto just_say_no; |
828 | } | |
829 | else if (!(fp = IoOFP(io))) { | |
7716c5c5 NC |
830 | if (IoIFP(io)) |
831 | report_wrongway_fh(gv, '<'); | |
51087808 | 832 | else |
7716c5c5 | 833 | report_evil_fh(gv); |
93189314 | 834 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e LW |
835 | goto just_say_no; |
836 | } | |
837 | else { | |
e23d9e2f | 838 | SV * const ofs = GvSV(PL_ofsgv); /* $, */ |
a0d0e21e | 839 | MARK++; |
e23d9e2f | 840 | if (ofs && (SvGMAGICAL(ofs) || SvOK(ofs))) { |
a0d0e21e LW |
841 | while (MARK <= SP) { |
842 | if (!do_print(*MARK, fp)) | |
843 | break; | |
844 | MARK++; | |
845 | if (MARK <= SP) { | |
e23d9e2f CS |
846 | /* don't use 'ofs' here - it may be invalidated by magic callbacks */ |
847 | if (!do_print(GvSV(PL_ofsgv), fp)) { | |
a0d0e21e LW |
848 | MARK--; |
849 | break; | |
850 | } | |
851 | } | |
852 | } | |
853 | } | |
854 | else { | |
855 | while (MARK <= SP) { | |
856 | if (!do_print(*MARK, fp)) | |
857 | break; | |
858 | MARK++; | |
859 | } | |
860 | } | |
861 | if (MARK <= SP) | |
862 | goto just_say_no; | |
863 | else { | |
cfc4a7da GA |
864 | if (PL_op->op_type == OP_SAY) { |
865 | if (PerlIO_write(fp, "\n", 1) == 0 || PerlIO_error(fp)) | |
866 | goto just_say_no; | |
867 | } | |
868 | else if (PL_ors_sv && SvOK(PL_ors_sv)) | |
7889fe52 | 869 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
a0d0e21e LW |
870 | goto just_say_no; |
871 | ||
872 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 873 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
874 | goto just_say_no; |
875 | } | |
876 | } | |
877 | SP = ORIGMARK; | |
e52fd6f4 | 878 | XPUSHs(&PL_sv_yes); |
a0d0e21e LW |
879 | RETURN; |
880 | ||
881 | just_say_no: | |
882 | SP = ORIGMARK; | |
e52fd6f4 | 883 | XPUSHs(&PL_sv_undef); |
a0d0e21e LW |
884 | RETURN; |
885 | } | |
886 | ||
b1c05ba5 DM |
887 | |
888 | /* also used for: pp_rv2hv() */ | |
bdaf10a5 | 889 | /* also called directly by pp_lvavref */ |
b1c05ba5 | 890 | |
a0d0e21e LW |
891 | PP(pp_rv2av) |
892 | { | |
20b7effb | 893 | dSP; dTOPss; |
cde874ca | 894 | const I32 gimme = GIMME_V; |
13c59d41 MH |
895 | static const char an_array[] = "an ARRAY"; |
896 | static const char a_hash[] = "a HASH"; | |
bdaf10a5 FC |
897 | const bool is_pp_rv2av = PL_op->op_type == OP_RV2AV |
898 | || PL_op->op_type == OP_LVAVREF; | |
d83b45b8 | 899 | const svtype type = is_pp_rv2av ? SVt_PVAV : SVt_PVHV; |
a0d0e21e | 900 | |
9026059d | 901 | SvGETMAGIC(sv); |
a0d0e21e | 902 | if (SvROK(sv)) { |
5d9574c1 | 903 | if (UNLIKELY(SvAMAGIC(sv))) { |
93d7320b | 904 | sv = amagic_deref_call(sv, is_pp_rv2av ? to_av_amg : to_hv_amg); |
93d7320b | 905 | } |
17ab7946 | 906 | sv = SvRV(sv); |
5d9574c1 | 907 | if (UNLIKELY(SvTYPE(sv) != type)) |
dcbac5bb | 908 | /* diag_listed_as: Not an ARRAY reference */ |
13c59d41 | 909 | DIE(aTHX_ "Not %s reference", is_pp_rv2av ? an_array : a_hash); |
5d9574c1 DM |
910 | else if (UNLIKELY(PL_op->op_flags & OPf_MOD |
911 | && PL_op->op_private & OPpLVAL_INTRO)) | |
3da99855 | 912 | Perl_croak(aTHX_ "%s", PL_no_localize_ref); |
a0d0e21e | 913 | } |
5d9574c1 | 914 | else if (UNLIKELY(SvTYPE(sv) != type)) { |
67955e0c | 915 | GV *gv; |
1c846c1f | 916 | |
6e592b3a | 917 | if (!isGV_with_GP(sv)) { |
13c59d41 | 918 | gv = Perl_softref2xv(aTHX_ sv, is_pp_rv2av ? an_array : a_hash, |
dc3c76f8 NC |
919 | type, &sp); |
920 | if (!gv) | |
921 | RETURN; | |
35cd451c GS |
922 | } |
923 | else { | |
159b6efe | 924 | gv = MUTABLE_GV(sv); |
a0d0e21e | 925 | } |
ad64d0ec | 926 | sv = is_pp_rv2av ? MUTABLE_SV(GvAVn(gv)) : MUTABLE_SV(GvHVn(gv)); |
533c011a | 927 | if (PL_op->op_private & OPpLVAL_INTRO) |
ad64d0ec | 928 | sv = is_pp_rv2av ? MUTABLE_SV(save_ary(gv)) : MUTABLE_SV(save_hash(gv)); |
9f527363 FC |
929 | } |
930 | if (PL_op->op_flags & OPf_REF) { | |
17ab7946 | 931 | SETs(sv); |
a0d0e21e | 932 | RETURN; |
9f527363 | 933 | } |
5d9574c1 | 934 | else if (UNLIKELY(PL_op->op_private & OPpMAYBE_LVSUB)) { |
40c94d11 FC |
935 | const I32 flags = is_lvalue_sub(); |
936 | if (flags && !(flags & OPpENTERSUB_INARGS)) { | |
cde874ca | 937 | if (gimme != G_ARRAY) |
042560a6 | 938 | goto croak_cant_return; |
17ab7946 | 939 | SETs(sv); |
78f9721b | 940 | RETURN; |
40c94d11 | 941 | } |
a0d0e21e LW |
942 | } |
943 | ||
17ab7946 | 944 | if (is_pp_rv2av) { |
502c6561 | 945 | AV *const av = MUTABLE_AV(sv); |
636fe681 | 946 | /* The guts of pp_rv2av */ |
96913b52 | 947 | if (gimme == G_ARRAY) { |
d5524600 DM |
948 | SP--; |
949 | PUTBACK; | |
950 | S_pushav(aTHX_ av); | |
951 | SPAGAIN; | |
1c846c1f | 952 | } |
96913b52 VP |
953 | else if (gimme == G_SCALAR) { |
954 | dTARGET; | |
c70927a6 | 955 | const SSize_t maxarg = AvFILL(av) + 1; |
96913b52 | 956 | SETi(maxarg); |
93965878 | 957 | } |
17ab7946 NC |
958 | } else { |
959 | /* The guts of pp_rv2hv */ | |
96913b52 VP |
960 | if (gimme == G_ARRAY) { /* array wanted */ |
961 | *PL_stack_sp = sv; | |
981b7185 | 962 | return Perl_do_kv(aTHX); |
96913b52 | 963 | } |
c8fe3bdf | 964 | else if ((PL_op->op_private & OPpTRUEBOOL |
adc42c31 | 965 | || ( PL_op->op_private & OPpMAYBE_TRUEBOOL |
c8fe3bdf FC |
966 | && block_gimme() == G_VOID )) |
967 | && (!SvRMAGICAL(sv) || !mg_find(sv, PERL_MAGIC_tied))) | |
968 | SETs(HvUSEDKEYS(sv) ? &PL_sv_yes : sv_2mortal(newSViv(0))); | |
96913b52 | 969 | else if (gimme == G_SCALAR) { |
1a8bdda9 | 970 | dTARG; |
96913b52 | 971 | TARG = Perl_hv_scalar(aTHX_ MUTABLE_HV(sv)); |
96913b52 VP |
972 | SETTARG; |
973 | } | |
17ab7946 | 974 | } |
be85d344 | 975 | RETURN; |
042560a6 NC |
976 | |
977 | croak_cant_return: | |
978 | Perl_croak(aTHX_ "Can't return %s to lvalue scalar context", | |
979 | is_pp_rv2av ? "array" : "hash"); | |
77e217c6 | 980 | RETURN; |
a0d0e21e LW |
981 | } |
982 | ||
10c8fecd | 983 | STATIC void |
fb8f4cf8 | 984 | S_do_oddball(pTHX_ SV **oddkey, SV **firstkey) |
10c8fecd | 985 | { |
7918f24d NC |
986 | PERL_ARGS_ASSERT_DO_ODDBALL; |
987 | ||
fb8f4cf8 | 988 | if (*oddkey) { |
6d822dc4 | 989 | if (ckWARN(WARN_MISC)) { |
a3b680e6 | 990 | const char *err; |
fb8f4cf8 RZ |
991 | if (oddkey == firstkey && |
992 | SvROK(*oddkey) && | |
993 | (SvTYPE(SvRV(*oddkey)) == SVt_PVAV || | |
994 | SvTYPE(SvRV(*oddkey)) == SVt_PVHV)) | |
10c8fecd | 995 | { |
a3b680e6 | 996 | err = "Reference found where even-sized list expected"; |
10c8fecd GS |
997 | } |
998 | else | |
a3b680e6 | 999 | err = "Odd number of elements in hash assignment"; |
f1f66076 | 1000 | Perl_warner(aTHX_ packWARN(WARN_MISC), "%s", err); |
10c8fecd | 1001 | } |
6d822dc4 | 1002 | |
10c8fecd GS |
1003 | } |
1004 | } | |
1005 | ||
a0d0e21e LW |
1006 | PP(pp_aassign) |
1007 | { | |
27da23d5 | 1008 | dVAR; dSP; |
3280af22 NIS |
1009 | SV **lastlelem = PL_stack_sp; |
1010 | SV **lastrelem = PL_stack_base + POPMARK; | |
1011 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
1012 | SV **firstlelem = lastrelem + 1; |
1013 | ||
eb578fdb KW |
1014 | SV **relem; |
1015 | SV **lelem; | |
a0d0e21e | 1016 | |
eb578fdb KW |
1017 | SV *sv; |
1018 | AV *ary; | |
a0d0e21e | 1019 | |
54310121 | 1020 | I32 gimme; |
a0d0e21e | 1021 | HV *hash; |
c70927a6 | 1022 | SSize_t i; |
a0d0e21e | 1023 | int magic; |
88e2091b | 1024 | U32 lval = 0; |
5637b936 | 1025 | |
3280af22 | 1026 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
ca65944e | 1027 | gimme = GIMME_V; |
88e2091b RZ |
1028 | if (gimme == G_ARRAY) |
1029 | lval = PL_op->op_flags & OPf_MOD || LVRET; | |
a0d0e21e LW |
1030 | |
1031 | /* If there's a common identifier on both sides we have to take | |
1032 | * special care that assigning the identifier on the left doesn't | |
1033 | * clobber a value on the right that's used later in the list. | |
acdea6f0 | 1034 | * Don't bother if LHS is just an empty hash or array. |
a0d0e21e | 1035 | */ |
acdea6f0 | 1036 | |
ff2a62e0 | 1037 | if ( (PL_op->op_private & OPpASSIGN_COMMON || PL_sawalias) |
acdea6f0 DM |
1038 | && ( |
1039 | firstlelem != lastlelem | |
1040 | || ! ((sv = *firstlelem)) | |
1041 | || SvMAGICAL(sv) | |
1042 | || ! (SvTYPE(sv) == SVt_PVAV || SvTYPE(sv) == SVt_PVHV) | |
1043 | || (SvTYPE(sv) == SVt_PVAV && AvFILL((AV*)sv) != -1) | |
1b95d04f | 1044 | || (SvTYPE(sv) == SVt_PVHV && HvUSEDKEYS((HV*)sv) != 0) |
acdea6f0 DM |
1045 | ) |
1046 | ) { | |
cc5e57d2 | 1047 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd | 1048 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
5d9574c1 | 1049 | if (LIKELY((sv = *relem))) { |
a1f49e72 | 1050 | TAINT_NOT; /* Each item is independent */ |
61e5f455 NC |
1051 | |
1052 | /* Dear TODO test in t/op/sort.t, I love you. | |
1053 | (It's relying on a panic, not a "semi-panic" from newSVsv() | |
1054 | and then an assertion failure below.) */ | |
5d9574c1 | 1055 | if (UNLIKELY(SvIS_FREED(sv))) { |
61e5f455 NC |
1056 | Perl_croak(aTHX_ "panic: attempt to copy freed scalar %p", |
1057 | (void*)sv); | |
1058 | } | |
2203fb5a FC |
1059 | /* Not newSVsv(), as it does not allow copy-on-write, |
1060 | resulting in wasteful copies. We need a second copy of | |
1061 | a temp here, hence the SV_NOSTEAL. */ | |
1062 | *relem = sv_mortalcopy_flags(sv,SV_GMAGIC|SV_DO_COW_SVSETSV | |
1063 | |SV_NOSTEAL); | |
a1f49e72 | 1064 | } |
10c8fecd | 1065 | } |
a0d0e21e LW |
1066 | } |
1067 | ||
1068 | relem = firstrelem; | |
1069 | lelem = firstlelem; | |
4608196e RGS |
1070 | ary = NULL; |
1071 | hash = NULL; | |
10c8fecd | 1072 | |
5d9574c1 | 1073 | while (LIKELY(lelem <= lastlelem)) { |
bdaf10a5 | 1074 | bool alias = FALSE; |
bbce6d69 | 1075 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e | 1076 | sv = *lelem++; |
bdaf10a5 FC |
1077 | if (UNLIKELY(!sv)) { |
1078 | alias = TRUE; | |
1079 | sv = *lelem++; | |
1080 | ASSUME(SvTYPE(sv) == SVt_PVAV); | |
1081 | } | |
a0d0e21e LW |
1082 | switch (SvTYPE(sv)) { |
1083 | case SVt_PVAV: | |
60edcf09 | 1084 | ary = MUTABLE_AV(sv); |
748a9306 | 1085 | magic = SvMAGICAL(ary) != 0; |
60edcf09 FC |
1086 | ENTER; |
1087 | SAVEFREESV(SvREFCNT_inc_simple_NN(sv)); | |
a0d0e21e | 1088 | av_clear(ary); |
7e42bd57 | 1089 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1090 | i = 0; |
1091 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1092 | SV **didstore; |
5d9574c1 | 1093 | if (LIKELY(*relem)) |
ce0d59fd | 1094 | SvGETMAGIC(*relem); /* before newSV, in case it dies */ |
bdaf10a5 FC |
1095 | if (LIKELY(!alias)) { |
1096 | sv = newSV(0); | |
1097 | sv_setsv_nomg(sv, *relem); | |
1098 | *relem = sv; | |
1099 | } | |
1100 | else { | |
1101 | if (!SvROK(*relem)) | |
1102 | DIE(aTHX_ "Assigned value is not a reference"); | |
1103 | if (SvTYPE(SvRV(*relem)) > SVt_PVLV) | |
1104 | /* diag_listed_as: Assigned value is not %s reference */ | |
1105 | DIE(aTHX_ | |
1106 | "Assigned value is not a SCALAR reference"); | |
1107 | if (lval) | |
1108 | *relem = sv_mortalcopy(*relem); | |
1109 | /* XXX else check for weak refs? */ | |
1110 | sv = SvREFCNT_inc_simple_NN(SvRV(*relem)); | |
1111 | } | |
1112 | relem++; | |
5117ca91 GS |
1113 | didstore = av_store(ary,i++,sv); |
1114 | if (magic) { | |
18024492 FC |
1115 | if (!didstore) |
1116 | sv_2mortal(sv); | |
8ef24240 | 1117 | if (SvSMAGICAL(sv)) |
fb73857a | 1118 | mg_set(sv); |
5117ca91 | 1119 | } |
bbce6d69 | 1120 | TAINT_NOT; |
a0d0e21e | 1121 | } |
5d9574c1 | 1122 | if (UNLIKELY(PL_delaymagic & DM_ARRAY_ISA)) |
ad64d0ec | 1123 | SvSETMAGIC(MUTABLE_SV(ary)); |
60edcf09 | 1124 | LEAVE; |
a0d0e21e | 1125 | break; |
10c8fecd | 1126 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e | 1127 | SV *tmpstr; |
1c4ea384 RZ |
1128 | int odd; |
1129 | int duplicates = 0; | |
45960564 | 1130 | SV** topelem = relem; |
1c4ea384 | 1131 | SV **firsthashrelem = relem; |
a0d0e21e | 1132 | |
60edcf09 | 1133 | hash = MUTABLE_HV(sv); |
748a9306 | 1134 | magic = SvMAGICAL(hash) != 0; |
1c4ea384 RZ |
1135 | |
1136 | odd = ((lastrelem - firsthashrelem)&1)? 0 : 1; | |
5d9574c1 | 1137 | if (UNLIKELY(odd)) { |
fb8f4cf8 | 1138 | do_oddball(lastrelem, firsthashrelem); |
1d2b3927 HS |
1139 | /* we have firstlelem to reuse, it's not needed anymore |
1140 | */ | |
1c4ea384 RZ |
1141 | *(lastrelem+1) = &PL_sv_undef; |
1142 | } | |
1143 | ||
60edcf09 FC |
1144 | ENTER; |
1145 | SAVEFREESV(SvREFCNT_inc_simple_NN(sv)); | |
a0d0e21e | 1146 | hv_clear(hash); |
5d9574c1 | 1147 | while (LIKELY(relem < lastrelem+odd)) { /* gobble up all the rest */ |
5117ca91 | 1148 | HE *didstore; |
1c4ea384 | 1149 | assert(*relem); |
632b9d6f FC |
1150 | /* Copy the key if aassign is called in lvalue context, |
1151 | to avoid having the next op modify our rhs. Copy | |
1152 | it also if it is gmagical, lest it make the | |
1153 | hv_store_ent call below croak, leaking the value. */ | |
1154 | sv = lval || SvGMAGICAL(*relem) | |
1155 | ? sv_mortalcopy(*relem) | |
1156 | : *relem; | |
45960564 | 1157 | relem++; |
1c4ea384 | 1158 | assert(*relem); |
632b9d6f FC |
1159 | SvGETMAGIC(*relem); |
1160 | tmpstr = newSV(0); | |
1161 | sv_setsv_nomg(tmpstr,*relem++); /* value */ | |
a88bf2bc | 1162 | if (gimme == G_ARRAY) { |
45960564 DM |
1163 | if (hv_exists_ent(hash, sv, 0)) |
1164 | /* key overwrites an existing entry */ | |
1165 | duplicates += 2; | |
a88bf2bc | 1166 | else { |
45960564 | 1167 | /* copy element back: possibly to an earlier |
1d2b3927 HS |
1168 | * stack location if we encountered dups earlier, |
1169 | * possibly to a later stack location if odd */ | |
45960564 DM |
1170 | *topelem++ = sv; |
1171 | *topelem++ = tmpstr; | |
1172 | } | |
1173 | } | |
5117ca91 | 1174 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
632b9d6f FC |
1175 | if (magic) { |
1176 | if (!didstore) sv_2mortal(tmpstr); | |
1177 | SvSETMAGIC(tmpstr); | |
1178 | } | |
bbce6d69 | 1179 | TAINT_NOT; |
8e07c86e | 1180 | } |
60edcf09 | 1181 | LEAVE; |
1c4ea384 RZ |
1182 | if (duplicates && gimme == G_ARRAY) { |
1183 | /* at this point we have removed the duplicate key/value | |
1184 | * pairs from the stack, but the remaining values may be | |
1185 | * wrong; i.e. with (a 1 a 2 b 3) on the stack we've removed | |
1186 | * the (a 2), but the stack now probably contains | |
1187 | * (a <freed> b 3), because { hv_save(a,1); hv_save(a,2) } | |
1188 | * obliterates the earlier key. So refresh all values. */ | |
1189 | lastrelem -= duplicates; | |
1190 | relem = firsthashrelem; | |
1191 | while (relem < lastrelem+odd) { | |
1192 | HE *he; | |
1193 | he = hv_fetch_ent(hash, *relem++, 0, 0); | |
1194 | *relem++ = (he ? HeVAL(he) : &PL_sv_undef); | |
1195 | } | |
1196 | } | |
1197 | if (odd && gimme == G_ARRAY) lastrelem++; | |
a0d0e21e LW |
1198 | } |
1199 | break; | |
1200 | default: | |
6fc92669 GS |
1201 | if (SvIMMORTAL(sv)) { |
1202 | if (relem <= lastrelem) | |
1203 | relem++; | |
1204 | break; | |
a0d0e21e LW |
1205 | } |
1206 | if (relem <= lastrelem) { | |
5d9574c1 | 1207 | if (UNLIKELY( |
1c70fb82 FC |
1208 | SvTEMP(sv) && !SvSMAGICAL(sv) && SvREFCNT(sv) == 1 && |
1209 | (!isGV_with_GP(sv) || SvFAKE(sv)) && ckWARN(WARN_MISC) | |
5d9574c1 | 1210 | )) |
1c70fb82 FC |
1211 | Perl_warner(aTHX_ |
1212 | packWARN(WARN_MISC), | |
1213 | "Useless assignment to a temporary" | |
1214 | ); | |
a0d0e21e LW |
1215 | sv_setsv(sv, *relem); |
1216 | *(relem++) = sv; | |
1217 | } | |
1218 | else | |
3280af22 | 1219 | sv_setsv(sv, &PL_sv_undef); |
8ef24240 | 1220 | SvSETMAGIC(sv); |
a0d0e21e LW |
1221 | break; |
1222 | } | |
1223 | } | |
5d9574c1 | 1224 | if (UNLIKELY(PL_delaymagic & ~DM_DELAY)) { |
985213f2 | 1225 | /* Will be used to set PL_tainting below */ |
dfff4baf BF |
1226 | Uid_t tmp_uid = PerlProc_getuid(); |
1227 | Uid_t tmp_euid = PerlProc_geteuid(); | |
1228 | Gid_t tmp_gid = PerlProc_getgid(); | |
1229 | Gid_t tmp_egid = PerlProc_getegid(); | |
985213f2 | 1230 | |
b469f1e0 | 1231 | /* XXX $> et al currently silently ignore failures */ |
3280af22 | 1232 | if (PL_delaymagic & DM_UID) { |
a0d0e21e | 1233 | #ifdef HAS_SETRESUID |
b469f1e0 JH |
1234 | PERL_UNUSED_RESULT( |
1235 | setresuid((PL_delaymagic & DM_RUID) ? PL_delaymagic_uid : (Uid_t)-1, | |
1236 | (PL_delaymagic & DM_EUID) ? PL_delaymagic_euid : (Uid_t)-1, | |
1237 | (Uid_t)-1)); | |
56febc5e AD |
1238 | #else |
1239 | # ifdef HAS_SETREUID | |
b469f1e0 JH |
1240 | PERL_UNUSED_RESULT( |
1241 | setreuid((PL_delaymagic & DM_RUID) ? PL_delaymagic_uid : (Uid_t)-1, | |
1242 | (PL_delaymagic & DM_EUID) ? PL_delaymagic_euid : (Uid_t)-1)); | |
56febc5e AD |
1243 | # else |
1244 | # ifdef HAS_SETRUID | |
b28d0864 | 1245 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
b469f1e0 | 1246 | PERL_UNUSED_RESULT(setruid(PL_delaymagic_uid)); |
b28d0864 | 1247 | PL_delaymagic &= ~DM_RUID; |
a0d0e21e | 1248 | } |
56febc5e AD |
1249 | # endif /* HAS_SETRUID */ |
1250 | # ifdef HAS_SETEUID | |
b28d0864 | 1251 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
b469f1e0 | 1252 | PERL_UNUSED_RESULT(seteuid(PL_delaymagic_euid)); |
b28d0864 | 1253 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e | 1254 | } |
56febc5e | 1255 | # endif /* HAS_SETEUID */ |
b28d0864 | 1256 | if (PL_delaymagic & DM_UID) { |
985213f2 | 1257 | if (PL_delaymagic_uid != PL_delaymagic_euid) |
cea2e8a9 | 1258 | DIE(aTHX_ "No setreuid available"); |
b469f1e0 | 1259 | PERL_UNUSED_RESULT(PerlProc_setuid(PL_delaymagic_uid)); |
a0d0e21e | 1260 | } |
56febc5e AD |
1261 | # endif /* HAS_SETREUID */ |
1262 | #endif /* HAS_SETRESUID */ | |
04783dc7 | 1263 | |
985213f2 AB |
1264 | tmp_uid = PerlProc_getuid(); |
1265 | tmp_euid = PerlProc_geteuid(); | |
a0d0e21e | 1266 | } |
b469f1e0 | 1267 | /* XXX $> et al currently silently ignore failures */ |
3280af22 | 1268 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1269 | #ifdef HAS_SETRESGID |
b469f1e0 JH |
1270 | PERL_UNUSED_RESULT( |
1271 | setresgid((PL_delaymagic & DM_RGID) ? PL_delaymagic_gid : (Gid_t)-1, | |
1272 | (PL_delaymagic & DM_EGID) ? PL_delaymagic_egid : (Gid_t)-1, | |
1273 | (Gid_t)-1)); | |
56febc5e AD |
1274 | #else |
1275 | # ifdef HAS_SETREGID | |
b469f1e0 JH |
1276 | PERL_UNUSED_RESULT( |
1277 | setregid((PL_delaymagic & DM_RGID) ? PL_delaymagic_gid : (Gid_t)-1, | |
1278 | (PL_delaymagic & DM_EGID) ? PL_delaymagic_egid : (Gid_t)-1)); | |
56febc5e AD |
1279 | # else |
1280 | # ifdef HAS_SETRGID | |
b28d0864 | 1281 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
b469f1e0 | 1282 | PERL_UNUSED_RESULT(setrgid(PL_delaymagic_gid)); |
b28d0864 | 1283 | PL_delaymagic &= ~DM_RGID; |
a0d0e21e | 1284 | } |
56febc5e AD |
1285 | # endif /* HAS_SETRGID */ |
1286 | # ifdef HAS_SETEGID | |
b28d0864 | 1287 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
b469f1e0 | 1288 | PERL_UNUSED_RESULT(setegid(PL_delaymagic_egid)); |
b28d0864 | 1289 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e | 1290 | } |
56febc5e | 1291 | # endif /* HAS_SETEGID */ |
b28d0864 | 1292 | if (PL_delaymagic & DM_GID) { |
985213f2 | 1293 | if (PL_delaymagic_gid != PL_delaymagic_egid) |
cea2e8a9 | 1294 | DIE(aTHX_ "No setregid available"); |
b469f1e0 | 1295 | PERL_UNUSED_RESULT(PerlProc_setgid(PL_delaymagic_gid)); |
a0d0e21e | 1296 | } |
56febc5e AD |
1297 | # endif /* HAS_SETREGID */ |
1298 | #endif /* HAS_SETRESGID */ | |
04783dc7 | 1299 | |
985213f2 AB |
1300 | tmp_gid = PerlProc_getgid(); |
1301 | tmp_egid = PerlProc_getegid(); | |
a0d0e21e | 1302 | } |
284167a5 | 1303 | TAINTING_set( TAINTING_get | (tmp_uid && (tmp_euid != tmp_uid || tmp_egid != tmp_gid)) ); |
9a9b5ec9 DM |
1304 | #ifdef NO_TAINT_SUPPORT |
1305 | PERL_UNUSED_VAR(tmp_uid); | |
1306 | PERL_UNUSED_VAR(tmp_euid); | |
1307 | PERL_UNUSED_VAR(tmp_gid); | |
1308 | PERL_UNUSED_VAR(tmp_egid); | |
1309 | #endif | |
a0d0e21e | 1310 | } |
3280af22 | 1311 | PL_delaymagic = 0; |
54310121 | 1312 | |
54310121 | 1313 | if (gimme == G_VOID) |
1314 | SP = firstrelem - 1; | |
1315 | else if (gimme == G_SCALAR) { | |
1316 | dTARGET; | |
1317 | SP = firstrelem; | |
231cbeb2 | 1318 | SETi(lastrelem - firstrelem + 1); |
54310121 | 1319 | } |
1320 | else { | |
1c4ea384 | 1321 | if (ary || hash) |
1d2b3927 HS |
1322 | /* note that in this case *firstlelem may have been overwritten |
1323 | by sv_undef in the odd hash case */ | |
a0d0e21e | 1324 | SP = lastrelem; |
1c4ea384 | 1325 | else { |
a0d0e21e | 1326 | SP = firstrelem + (lastlelem - firstlelem); |
1c4ea384 RZ |
1327 | lelem = firstlelem + (relem - firstrelem); |
1328 | while (relem <= SP) | |
1329 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; | |
1330 | } | |
a0d0e21e | 1331 | } |
08aeb9f7 | 1332 | |
54310121 | 1333 | RETURN; |
a0d0e21e LW |
1334 | } |
1335 | ||
8782bef2 GB |
1336 | PP(pp_qr) |
1337 | { | |
20b7effb | 1338 | dSP; |
eb578fdb | 1339 | PMOP * const pm = cPMOP; |
fe578d7f | 1340 | REGEXP * rx = PM_GETRE(pm); |
10599a69 | 1341 | SV * const pkg = rx ? CALLREG_PACKAGE(rx) : NULL; |
c4420975 | 1342 | SV * const rv = sv_newmortal(); |
d63c20f2 DM |
1343 | CV **cvp; |
1344 | CV *cv; | |
288b8c02 NC |
1345 | |
1346 | SvUPGRADE(rv, SVt_IV); | |
c2123ae3 NC |
1347 | /* For a subroutine describing itself as "This is a hacky workaround" I'm |
1348 | loathe to use it here, but it seems to be the right fix. Or close. | |
1349 | The key part appears to be that it's essential for pp_qr to return a new | |
1350 | object (SV), which implies that there needs to be an effective way to | |
1351 | generate a new SV from the existing SV that is pre-compiled in the | |
1352 | optree. */ | |
1353 | SvRV_set(rv, MUTABLE_SV(reg_temp_copy(NULL, rx))); | |
288b8c02 NC |
1354 | SvROK_on(rv); |
1355 | ||
8d919b0a | 1356 | cvp = &( ReANY((REGEXP *)SvRV(rv))->qr_anoncv); |
5d9574c1 | 1357 | if (UNLIKELY((cv = *cvp) && CvCLONE(*cvp))) { |
d63c20f2 | 1358 | *cvp = cv_clone(cv); |
fc2b2dca | 1359 | SvREFCNT_dec_NN(cv); |
d63c20f2 DM |
1360 | } |
1361 | ||
288b8c02 | 1362 | if (pkg) { |
f815daf2 | 1363 | HV *const stash = gv_stashsv(pkg, GV_ADD); |
fc2b2dca | 1364 | SvREFCNT_dec_NN(pkg); |
288b8c02 NC |
1365 | (void)sv_bless(rv, stash); |
1366 | } | |
1367 | ||
5d9574c1 | 1368 | if (UNLIKELY(RX_ISTAINTED(rx))) { |
e08e52cf | 1369 | SvTAINTED_on(rv); |
9274aefd DM |
1370 | SvTAINTED_on(SvRV(rv)); |
1371 | } | |
c8c13c22 JB |
1372 | XPUSHs(rv); |
1373 | RETURN; | |
8782bef2 GB |
1374 | } |
1375 | ||
a0d0e21e LW |
1376 | PP(pp_match) |
1377 | { | |
20b7effb | 1378 | dSP; dTARG; |
eb578fdb | 1379 | PMOP *pm = cPMOP; |
d65afb4b | 1380 | PMOP *dynpm = pm; |
eb578fdb | 1381 | const char *s; |
5c144d81 | 1382 | const char *strend; |
99a90e59 | 1383 | SSize_t curpos = 0; /* initial pos() or current $+[0] */ |
a0d0e21e | 1384 | I32 global; |
7fadf4a7 | 1385 | U8 r_flags = 0; |
5c144d81 | 1386 | const char *truebase; /* Start of string */ |
eb578fdb | 1387 | REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1388 | bool rxtainted; |
82334630 | 1389 | const I32 gimme = GIMME_V; |
a0d0e21e | 1390 | STRLEN len; |
a3b680e6 | 1391 | const I32 oldsave = PL_savestack_ix; |
e60df1fa | 1392 | I32 had_zerolen = 0; |
b1422d62 | 1393 | MAGIC *mg = NULL; |
a0d0e21e | 1394 | |
533c011a | 1395 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1396 | TARG = POPs; |
6ffceeb7 | 1397 | else if (ARGTARG) |
59f00321 | 1398 | GETTARGET; |
a0d0e21e | 1399 | else { |
54b9620d | 1400 | TARG = DEFSV; |
a0d0e21e LW |
1401 | EXTEND(SP,1); |
1402 | } | |
d9f424b2 | 1403 | |
c277df42 | 1404 | PUTBACK; /* EVAL blocks need stack_sp. */ |
69dc4b30 FC |
1405 | /* Skip get-magic if this is a qr// clone, because regcomp has |
1406 | already done it. */ | |
f1d31338 | 1407 | truebase = ReANY(rx)->mother_re |
69dc4b30 FC |
1408 | ? SvPV_nomg_const(TARG, len) |
1409 | : SvPV_const(TARG, len); | |
f1d31338 | 1410 | if (!truebase) |
2269b42e | 1411 | DIE(aTHX_ "panic: pp_match"); |
f1d31338 | 1412 | strend = truebase + len; |
284167a5 S |
1413 | rxtainted = (RX_ISTAINTED(rx) || |
1414 | (TAINT_get && (pm->op_pmflags & PMf_RETAINT))); | |
9212bbba | 1415 | TAINT_NOT; |
a0d0e21e | 1416 | |
6c864ec2 | 1417 | /* We need to know this in case we fail out early - pos() must be reset */ |
de0df3c0 MH |
1418 | global = dynpm->op_pmflags & PMf_GLOBAL; |
1419 | ||
d65afb4b | 1420 | /* PMdf_USED is set after a ?? matches once */ |
c737faaf YO |
1421 | if ( |
1422 | #ifdef USE_ITHREADS | |
1423 | SvREADONLY(PL_regex_pad[pm->op_pmoffset]) | |
1424 | #else | |
1425 | pm->op_pmflags & PMf_USED | |
1426 | #endif | |
1427 | ) { | |
e5dc5375 | 1428 | DEBUG_r(PerlIO_printf(Perl_debug_log, "?? already matched once")); |
de0df3c0 | 1429 | goto nope; |
a0d0e21e LW |
1430 | } |
1431 | ||
7e313637 FC |
1432 | /* empty pattern special-cased to use last successful pattern if |
1433 | possible, except for qr// */ | |
8d919b0a | 1434 | if (!ReANY(rx)->mother_re && !RX_PRELEN(rx) |
7e313637 | 1435 | && PL_curpm) { |
3280af22 | 1436 | pm = PL_curpm; |
aaa362c4 | 1437 | rx = PM_GETRE(pm); |
a0d0e21e | 1438 | } |
d65afb4b | 1439 | |
389ecb56 | 1440 | if (RX_MINLEN(rx) >= 0 && (STRLEN)RX_MINLEN(rx) > len) { |
75d43e96 FC |
1441 | DEBUG_r(PerlIO_printf(Perl_debug_log, "String shorter than min possible regex match (%" |
1442 | UVuf" < %"IVdf")\n", | |
1443 | (UV)len, (IV)RX_MINLEN(rx))); | |
de0df3c0 | 1444 | goto nope; |
e5dc5375 | 1445 | } |
c277df42 | 1446 | |
8ef97b0e | 1447 | /* get pos() if //g */ |
de0df3c0 | 1448 | if (global) { |
b1422d62 | 1449 | mg = mg_find_mglob(TARG); |
8ef97b0e | 1450 | if (mg && mg->mg_len >= 0) { |
25fdce4a | 1451 | curpos = MgBYTEPOS(mg, TARG, truebase, len); |
8ef97b0e DM |
1452 | /* last time pos() was set, it was zero-length match */ |
1453 | if (mg->mg_flags & MGf_MINMATCH) | |
1454 | had_zerolen = 1; | |
1455 | } | |
a0d0e21e | 1456 | } |
8ef97b0e | 1457 | |
6e240d0b | 1458 | #ifdef PERL_SAWAMPERSAND |
a41aa44d | 1459 | if ( RX_NPARENS(rx) |
6502e081 | 1460 | || PL_sawampersand |
6502e081 | 1461 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY)) |
5b0e71e9 | 1462 | || (dynpm->op_pmflags & PMf_KEEPCOPY) |
6e240d0b FC |
1463 | ) |
1464 | #endif | |
1465 | { | |
6502e081 DM |
1466 | r_flags |= (REXEC_COPY_STR|REXEC_COPY_SKIP_PRE); |
1467 | /* in @a =~ /(.)/g, we iterate multiple times, but copy the buffer | |
1468 | * only on the first iteration. Therefore we need to copy $' as well | |
1469 | * as $&, to make the rest of the string available for captures in | |
1470 | * subsequent iterations */ | |
1471 | if (! (global && gimme == G_ARRAY)) | |
1472 | r_flags |= REXEC_COPY_SKIP_POST; | |
1473 | }; | |
5b0e71e9 DM |
1474 | #ifdef PERL_SAWAMPERSAND |
1475 | if (dynpm->op_pmflags & PMf_KEEPCOPY) | |
1476 | /* handle KEEPCOPY in pmop but not rx, eg $r=qr/a/; /$r/p */ | |
1477 | r_flags &= ~(REXEC_COPY_SKIP_PRE|REXEC_COPY_SKIP_POST); | |
1478 | #endif | |
22e551b9 | 1479 | |
f1d31338 DM |
1480 | s = truebase; |
1481 | ||
d7be1480 | 1482 | play_it_again: |
985afbc1 | 1483 | if (global) |
03c83e26 | 1484 | s = truebase + curpos; |
f722798b | 1485 | |
77da2310 | 1486 | if (!CALLREGEXEC(rx, (char*)s, (char *)strend, (char*)truebase, |
03c83e26 | 1487 | had_zerolen, TARG, NULL, r_flags)) |
03b6c93d | 1488 | goto nope; |
77da2310 NC |
1489 | |
1490 | PL_curpm = pm; | |
985afbc1 | 1491 | if (dynpm->op_pmflags & PMf_ONCE) |
c737faaf | 1492 | #ifdef USE_ITHREADS |
77da2310 | 1493 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); |
c737faaf | 1494 | #else |
77da2310 | 1495 | dynpm->op_pmflags |= PMf_USED; |
c737faaf | 1496 | #endif |
a0d0e21e | 1497 | |
72311751 GS |
1498 | if (rxtainted) |
1499 | RX_MATCH_TAINTED_on(rx); | |
1500 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
35c2ccc3 DM |
1501 | |
1502 | /* update pos */ | |
1503 | ||
1504 | if (global && (gimme != G_ARRAY || (dynpm->op_pmflags & PMf_CONTINUE))) { | |
b1422d62 | 1505 | if (!mg) |
35c2ccc3 | 1506 | mg = sv_magicext_mglob(TARG); |
25fdce4a | 1507 | MgBYTEPOS_set(mg, TARG, truebase, RX_OFFS(rx)[0].end); |
adf51885 DM |
1508 | if (RX_ZERO_LEN(rx)) |
1509 | mg->mg_flags |= MGf_MINMATCH; | |
1510 | else | |
1511 | mg->mg_flags &= ~MGf_MINMATCH; | |
35c2ccc3 DM |
1512 | } |
1513 | ||
bf9dff51 DM |
1514 | if ((!RX_NPARENS(rx) && !global) || gimme != G_ARRAY) { |
1515 | LEAVE_SCOPE(oldsave); | |
1516 | RETPUSHYES; | |
1517 | } | |
1518 | ||
88ab22af DM |
1519 | /* push captures on stack */ |
1520 | ||
bf9dff51 | 1521 | { |
07bc277f | 1522 | const I32 nparens = RX_NPARENS(rx); |
a3b680e6 | 1523 | I32 i = (global && !nparens) ? 1 : 0; |
a0d0e21e | 1524 | |
c277df42 | 1525 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1526 | EXTEND(SP, nparens + i); |
1527 | EXTEND_MORTAL(nparens + i); | |
1528 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e | 1529 | PUSHs(sv_newmortal()); |
5d9574c1 DM |
1530 | if (LIKELY((RX_OFFS(rx)[i].start != -1) |
1531 | && RX_OFFS(rx)[i].end != -1 )) | |
1532 | { | |
07bc277f | 1533 | const I32 len = RX_OFFS(rx)[i].end - RX_OFFS(rx)[i].start; |
f1d31338 | 1534 | const char * const s = RX_OFFS(rx)[i].start + truebase; |
5d9574c1 DM |
1535 | if (UNLIKELY(RX_OFFS(rx)[i].end < 0 || RX_OFFS(rx)[i].start < 0 |
1536 | || len < 0 || len > strend - s)) | |
5637ef5b NC |
1537 | DIE(aTHX_ "panic: pp_match start/end pointers, i=%ld, " |
1538 | "start=%ld, end=%ld, s=%p, strend=%p, len=%"UVuf, | |
1539 | (long) i, (long) RX_OFFS(rx)[i].start, | |
1540 | (long)RX_OFFS(rx)[i].end, s, strend, (UV) len); | |
a0d0e21e | 1541 | sv_setpvn(*SP, s, len); |
cce850e4 | 1542 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1543 | SvUTF8_on(*SP); |
a0d0e21e LW |
1544 | } |
1545 | } | |
1546 | if (global) { | |
0e0b3e82 | 1547 | curpos = (UV)RX_OFFS(rx)[0].end; |
03c83e26 | 1548 | had_zerolen = RX_ZERO_LEN(rx); |
c277df42 | 1549 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1550 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1551 | goto play_it_again; |
1552 | } | |
4633a7c4 | 1553 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1554 | RETURN; |
1555 | } | |
e5964223 | 1556 | NOT_REACHED; /* NOTREACHED */ |
a0d0e21e | 1557 | |
7b52d656 | 1558 | nope: |
d65afb4b | 1559 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
b1422d62 DM |
1560 | if (!mg) |
1561 | mg = mg_find_mglob(TARG); | |
1562 | if (mg) | |
1563 | mg->mg_len = -1; | |
a0d0e21e | 1564 | } |
4633a7c4 | 1565 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1566 | if (gimme == G_ARRAY) |
1567 | RETURN; | |
1568 | RETPUSHNO; | |
1569 | } | |
1570 | ||
1571 | OP * | |
864dbfa3 | 1572 | Perl_do_readline(pTHX) |
a0d0e21e | 1573 | { |
20b7effb | 1574 | dSP; dTARGETSTACKED; |
eb578fdb | 1575 | SV *sv; |
a0d0e21e LW |
1576 | STRLEN tmplen = 0; |
1577 | STRLEN offset; | |
760ac839 | 1578 | PerlIO *fp; |
eb578fdb KW |
1579 | IO * const io = GvIO(PL_last_in_gv); |
1580 | const I32 type = PL_op->op_type; | |
a3b680e6 | 1581 | const I32 gimme = GIMME_V; |
a0d0e21e | 1582 | |
6136c704 | 1583 | if (io) { |
50db69d8 | 1584 | const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar); |
6136c704 | 1585 | if (mg) { |
3e0cb5de | 1586 | Perl_tied_method(aTHX_ SV_CONST(READLINE), SP, MUTABLE_SV(io), mg, gimme, 0); |
6136c704 | 1587 | if (gimme == G_SCALAR) { |
50db69d8 NC |
1588 | SPAGAIN; |
1589 | SvSetSV_nosteal(TARG, TOPs); | |
1590 | SETTARG; | |
6136c704 | 1591 | } |
50db69d8 | 1592 | return NORMAL; |
0b7c7b4f | 1593 | } |
e79b0511 | 1594 | } |
4608196e | 1595 | fp = NULL; |
a0d0e21e LW |
1596 | if (io) { |
1597 | fp = IoIFP(io); | |
1598 | if (!fp) { | |
1599 | if (IoFLAGS(io) & IOf_ARGV) { | |
1600 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1601 | IoLINES(io) = 0; |
b9f2b683 | 1602 | if (av_tindex(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1603 | IoFLAGS(io) &= ~IOf_START; |
d5eb9a46 | 1604 | do_open6(PL_last_in_gv, "-", 1, NULL, NULL, 0); |
4bac9ae4 | 1605 | SvTAINTED_off(GvSVn(PL_last_in_gv)); /* previous tainting irrelevant */ |
76f68e9b | 1606 | sv_setpvs(GvSVn(PL_last_in_gv), "-"); |
3280af22 | 1607 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d GS |
1608 | fp = IoIFP(io); |
1609 | goto have_fp; | |
a0d0e21e LW |
1610 | } |
1611 | } | |
157fb5a1 | 1612 | fp = nextargv(PL_last_in_gv, PL_op->op_flags & OPf_SPECIAL); |
a0d0e21e | 1613 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1614 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1615 | } |
1616 | } | |
0d44d22b NC |
1617 | else if (type == OP_GLOB) |
1618 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1619 | } |
1620 | else if (type == OP_GLOB) | |
1621 | SP--; | |
7716c5c5 | 1622 | else if (IoTYPE(io) == IoTYPE_WRONLY) { |
a5390457 | 1623 | report_wrongway_fh(PL_last_in_gv, '>'); |
a00b5bd3 | 1624 | } |
a0d0e21e LW |
1625 | } |
1626 | if (!fp) { | |
041457d9 | 1627 | if ((!io || !(IoFLAGS(io) & IOf_START)) |
de7dabb6 TC |
1628 | && ckWARN(WARN_CLOSED) |
1629 | && type != OP_GLOB) | |
041457d9 | 1630 | { |
de7dabb6 | 1631 | report_evil_fh(PL_last_in_gv); |
3f4520fe | 1632 | } |
54310121 | 1633 | if (gimme == G_SCALAR) { |
79628082 | 1634 | /* undef TARG, and push that undefined value */ |
ba92458f AE |
1635 | if (type != OP_RCATLINE) { |
1636 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1637 | SvOK_off(TARG); |
ba92458f | 1638 | } |
a0d0e21e LW |
1639 | PUSHTARG; |
1640 | } | |
1641 | RETURN; | |
1642 | } | |
a2008d6d | 1643 | have_fp: |
54310121 | 1644 | if (gimme == G_SCALAR) { |
a0d0e21e | 1645 | sv = TARG; |
0f722b55 RGS |
1646 | if (type == OP_RCATLINE && SvGMAGICAL(sv)) |
1647 | mg_get(sv); | |
48de12d9 RGS |
1648 | if (SvROK(sv)) { |
1649 | if (type == OP_RCATLINE) | |
5668452f | 1650 | SvPV_force_nomg_nolen(sv); |
48de12d9 RGS |
1651 | else |
1652 | sv_unref(sv); | |
1653 | } | |
f7877b28 | 1654 | else if (isGV_with_GP(sv)) { |
5668452f | 1655 | SvPV_force_nomg_nolen(sv); |
f7877b28 | 1656 | } |
862a34c6 | 1657 | SvUPGRADE(sv, SVt_PV); |
a0d0e21e | 1658 | tmplen = SvLEN(sv); /* remember if already alloced */ |
e3918bb7 | 1659 | if (!tmplen && !SvREADONLY(sv) && !SvIsCOW(sv)) { |
f72e8700 JJ |
1660 | /* try short-buffering it. Please update t/op/readline.t |
1661 | * if you change the growth length. | |
1662 | */ | |
1663 | Sv_Grow(sv, 80); | |
1664 | } | |
2b5e58c4 AMS |
1665 | offset = 0; |
1666 | if (type == OP_RCATLINE && SvOK(sv)) { | |
1667 | if (!SvPOK(sv)) { | |
5668452f | 1668 | SvPV_force_nomg_nolen(sv); |
2b5e58c4 | 1669 | } |
a0d0e21e | 1670 | offset = SvCUR(sv); |
2b5e58c4 | 1671 | } |
a0d0e21e | 1672 | } |
54310121 | 1673 | else { |
561b68a9 | 1674 | sv = sv_2mortal(newSV(80)); |
54310121 | 1675 | offset = 0; |
1676 | } | |
fbad3eb5 | 1677 | |
3887d568 AP |
1678 | /* This should not be marked tainted if the fp is marked clean */ |
1679 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1680 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1681 | TAINT; \ | |
1682 | SvTAINTED_on(sv); \ | |
1683 | } | |
1684 | ||
684bef36 | 1685 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1686 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1687 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1688 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1689 | |
a0d0e21e | 1690 | for (;;) { |
09e8efcc | 1691 | PUTBACK; |
fbad3eb5 | 1692 | if (!sv_gets(sv, fp, offset) |
2d726892 TF |
1693 | && (type == OP_GLOB |
1694 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
1695 | || PerlIO_error(fp))) | |
fbad3eb5 | 1696 | { |
760ac839 | 1697 | PerlIO_clearerr(fp); |
a0d0e21e | 1698 | if (IoFLAGS(io) & IOf_ARGV) { |
157fb5a1 | 1699 | fp = nextargv(PL_last_in_gv, PL_op->op_flags & OPf_SPECIAL); |
a0d0e21e LW |
1700 | if (fp) |
1701 | continue; | |
3280af22 | 1702 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1703 | } |
1704 | else if (type == OP_GLOB) { | |
a2a5de95 NC |
1705 | if (!do_close(PL_last_in_gv, FALSE)) { |
1706 | Perl_ck_warner(aTHX_ packWARN(WARN_GLOB), | |
1707 | "glob failed (child exited with status %d%s)", | |
1708 | (int)(STATUS_CURRENT >> 8), | |
1709 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); | |
4eb79ab5 | 1710 | } |
a0d0e21e | 1711 | } |
54310121 | 1712 | if (gimme == G_SCALAR) { |
ba92458f AE |
1713 | if (type != OP_RCATLINE) { |
1714 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1715 | SvOK_off(TARG); |
ba92458f | 1716 | } |
09e8efcc | 1717 | SPAGAIN; |
a0d0e21e LW |
1718 | PUSHTARG; |
1719 | } | |
3887d568 | 1720 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1721 | RETURN; |
1722 | } | |
3887d568 | 1723 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1724 | IoLINES(io)++; |
b9fee9ba | 1725 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1726 | SvSETMAGIC(sv); |
09e8efcc | 1727 | SPAGAIN; |
a0d0e21e | 1728 | XPUSHs(sv); |
a0d0e21e | 1729 | if (type == OP_GLOB) { |
349d4f2f | 1730 | const char *t1; |
a0d0e21e | 1731 | |
3280af22 | 1732 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
6136c704 | 1733 | char * const tmps = SvEND(sv) - 1; |
aa07b2f6 | 1734 | if (*tmps == *SvPVX_const(PL_rs)) { |
c07a80fd | 1735 | *tmps = '\0'; |
b162af07 | 1736 | SvCUR_set(sv, SvCUR(sv) - 1); |
c07a80fd | 1737 | } |
1738 | } | |
349d4f2f | 1739 | for (t1 = SvPVX_const(sv); *t1; t1++) |
b51c3e77 CB |
1740 | #ifdef __VMS |
1741 | if (strchr("*%?", *t1)) | |
1742 | #else | |
7ad1e72d | 1743 | if (strchr("$&*(){}[]'\";\\|?<>~`", *t1)) |
b51c3e77 | 1744 | #endif |
a0d0e21e | 1745 | break; |
349d4f2f | 1746 | if (*t1 && PerlLIO_lstat(SvPVX_const(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1747 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1748 | continue; | |
1749 | } | |
2d79bf7f | 1750 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
d4c19fe8 AL |
1751 | if (ckWARN(WARN_UTF8)) { |
1752 | const U8 * const s = (const U8*)SvPVX_const(sv) + offset; | |
1753 | const STRLEN len = SvCUR(sv) - offset; | |
1754 | const U8 *f; | |
1755 | ||
1756 | if (!is_utf8_string_loc(s, len, &f)) | |
1757 | /* Emulate :encoding(utf8) warning in the same case. */ | |
1758 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
1759 | "utf8 \"\\x%02X\" does not map to Unicode", | |
1760 | f < (U8*)SvEND(sv) ? *f : 0); | |
1761 | } | |
a0d0e21e | 1762 | } |
54310121 | 1763 | if (gimme == G_ARRAY) { |
a0d0e21e | 1764 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1da4ca5f | 1765 | SvPV_shrink_to_cur(sv); |
a0d0e21e | 1766 | } |
561b68a9 | 1767 | sv = sv_2mortal(newSV(80)); |
a0d0e21e LW |
1768 | continue; |
1769 | } | |
54310121 | 1770 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e | 1771 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
d5b5861b NC |
1772 | const STRLEN new_len |
1773 | = SvCUR(sv) < 60 ? 80 : SvCUR(sv)+40; /* allow some slop */ | |
1da4ca5f | 1774 | SvPV_renew(sv, new_len); |
a0d0e21e LW |
1775 | } |
1776 | RETURN; | |
1777 | } | |
1778 | } | |
1779 | ||
a0d0e21e LW |
1780 | PP(pp_helem) |
1781 | { | |
20b7effb | 1782 | dSP; |
760ac839 | 1783 | HE* he; |
ae77835f | 1784 | SV **svp; |
c445ea15 | 1785 | SV * const keysv = POPs; |
85fbaab2 | 1786 | HV * const hv = MUTABLE_HV(POPs); |
a3b680e6 AL |
1787 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
1788 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
be6c24e0 | 1789 | SV *sv; |
92970b93 | 1790 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
d30e492c | 1791 | bool preeminent = TRUE; |
a0d0e21e | 1792 | |
b68eab22 S |
1793 | if (SvTYPE(hv) != SVt_PVHV) |
1794 | RETPUSHUNDEF; | |
d4c19fe8 | 1795 | |
92970b93 | 1796 | if (localizing) { |
d4c19fe8 AL |
1797 | MAGIC *mg; |
1798 | HV *stash; | |
d30e492c VP |
1799 | |
1800 | /* If we can determine whether the element exist, | |
1801 | * Try to preserve the existenceness of a tied hash | |
1802 | * element by using EXISTS and DELETE if possible. | |
1803 | * Fallback to FETCH and STORE otherwise. */ | |
2c5f48c2 | 1804 | if (SvCANEXISTDELETE(hv)) |
d30e492c | 1805 | preeminent = hv_exists_ent(hv, keysv, 0); |
d4c19fe8 | 1806 | } |
d30e492c | 1807 | |
5f9d7e2b | 1808 | he = hv_fetch_ent(hv, keysv, lval && !defer, 0); |
d4c19fe8 | 1809 | svp = he ? &HeVAL(he) : NULL; |
a0d0e21e | 1810 | if (lval) { |
746f6409 | 1811 | if (!svp || !*svp || *svp == &PL_sv_undef) { |
68dc0745 | 1812 | SV* lv; |
1813 | SV* key2; | |
2d8e6c8d | 1814 | if (!defer) { |
be2597df | 1815 | DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv)); |
2d8e6c8d | 1816 | } |
68dc0745 | 1817 | lv = sv_newmortal(); |
1818 | sv_upgrade(lv, SVt_PVLV); | |
1819 | LvTYPE(lv) = 'y'; | |
6136c704 | 1820 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, NULL, 0); |
fc2b2dca | 1821 | SvREFCNT_dec_NN(key2); /* sv_magic() increments refcount */ |
b37c2d43 | 1822 | LvTARG(lv) = SvREFCNT_inc_simple(hv); |
68dc0745 | 1823 | LvTARGLEN(lv) = 1; |
1824 | PUSHs(lv); | |
1825 | RETURN; | |
1826 | } | |
92970b93 | 1827 | if (localizing) { |
bfcb3514 | 1828 | if (HvNAME_get(hv) && isGV(*svp)) |
159b6efe | 1829 | save_gp(MUTABLE_GV(*svp), !(PL_op->op_flags & OPf_SPECIAL)); |
47cfc530 VP |
1830 | else if (preeminent) |
1831 | save_helem_flags(hv, keysv, svp, | |
1832 | (PL_op->op_flags & OPf_SPECIAL) ? 0 : SAVEf_SETMAGIC); | |
1833 | else | |
1834 | SAVEHDELETE(hv, keysv); | |
5f05dabc | 1835 | } |
9026059d GG |
1836 | else if (PL_op->op_private & OPpDEREF) { |
1837 | PUSHs(vivify_ref(*svp, PL_op->op_private & OPpDEREF)); | |
1838 | RETURN; | |
1839 | } | |
a0d0e21e | 1840 | } |
746f6409 | 1841 | sv = (svp && *svp ? *svp : &PL_sv_undef); |
fd69380d DM |
1842 | /* Originally this did a conditional C<sv = sv_mortalcopy(sv)>; this |
1843 | * was to make C<local $tied{foo} = $tied{foo}> possible. | |
1844 | * However, it seems no longer to be needed for that purpose, and | |
1845 | * introduced a new bug: stuff like C<while ($hash{taintedval} =~ /.../g> | |
1846 | * would loop endlessly since the pos magic is getting set on the | |
1847 | * mortal copy and lost. However, the copy has the effect of | |
1848 | * triggering the get magic, and losing it altogether made things like | |
1849 | * c<$tied{foo};> in void context no longer do get magic, which some | |
1850 | * code relied on. Also, delayed triggering of magic on @+ and friends | |
1851 | * meant the original regex may be out of scope by now. So as a | |
1852 | * compromise, do the get magic here. (The MGf_GSKIP flag will stop it | |
1853 | * being called too many times). */ | |
39cf747a | 1854 | if (!lval && SvRMAGICAL(hv) && SvGMAGICAL(sv)) |
fd69380d | 1855 | mg_get(sv); |
be6c24e0 | 1856 | PUSHs(sv); |
a0d0e21e LW |
1857 | RETURN; |
1858 | } | |
1859 | ||
fedf30e1 DM |
1860 | |
1861 | /* a stripped-down version of Perl_softref2xv() for use by | |
1862 | * pp_multideref(), which doesn't use PL_op->op_flags */ | |
1863 | ||
1864 | GV * | |
1865 | S_softref2xv_lite(pTHX_ SV *const sv, const char *const what, | |
1866 | const svtype type) | |
1867 | { | |
1868 | if (PL_op->op_private & HINT_STRICT_REFS) { | |
1869 | if (SvOK(sv)) | |
1870 | Perl_die(aTHX_ PL_no_symref_sv, sv, | |
1871 | (SvPOKp(sv) && SvCUR(sv)>32 ? "..." : ""), what); | |
1872 | else | |
1873 | Perl_die(aTHX_ PL_no_usym, what); | |
1874 | } | |
1875 | if (!SvOK(sv)) | |
1876 | Perl_die(aTHX_ PL_no_usym, what); | |
1877 | return gv_fetchsv_nomg(sv, GV_ADD, type); | |
1878 | } | |
1879 | ||
1880 | ||
1881 | /* handle one or more derefs and array/hash indexings, e.g. | |
1882 | * $h->{foo} or $a[0]{$key}[$i] or f()->[1] | |
1883 | * | |
1884 | * op_aux points to an array of unions of UV / IV / SV* / PADOFFSET. | |
1885 | * Each of these either contains an action, or an argument, such as | |
1886 | * a UV to use as an array index, or a lexical var to retrieve. | |
1887 | * In fact, several actions re stored per UV; we keep shifting new actions | |
1888 | * of the one UV, and only reload when it becomes zero. | |
1889 | */ | |
1890 | ||
1891 | PP(pp_multideref) | |
1892 | { | |
1893 | SV *sv = NULL; /* init to avoid spurious 'may be used uninitialized' */ | |
1894 | UNOP_AUX_item *items = cUNOP_AUXx(PL_op)->op_aux; | |
1895 | UV actions = items->uv; | |
1896 | ||
1897 | assert(actions); | |
1898 | /* this tells find_uninit_var() where we're up to */ | |
1899 | PL_multideref_pc = items; | |
1900 | ||
1901 | while (1) { | |
1902 | /* there are three main classes of action; the first retrieve | |
1903 | * the initial AV or HV from a variable or the stack; the second | |
1904 | * does the equivalent of an unrolled (/DREFAV, rv2av, aelem), | |
1905 | * the third an unrolled (/DREFHV, rv2hv, helem). | |
1906 | */ | |
1907 | switch (actions & MDEREF_ACTION_MASK) { | |
1908 | ||
1909 | case MDEREF_reload: | |
1910 | actions = (++items)->uv; | |
1911 | continue; | |
1912 | ||
1913 | case MDEREF_AV_padav_aelem: /* $lex[...] */ | |
1914 | sv = PAD_SVl((++items)->pad_offset); | |
1915 | goto do_AV_aelem; | |
1916 | ||
1917 | case MDEREF_AV_gvav_aelem: /* $pkg[...] */ | |
1918 | sv = UNOP_AUX_item_sv(++items); | |
1919 | assert(isGV_with_GP(sv)); | |
1920 | sv = (SV*)GvAVn((GV*)sv); | |
1921 | goto do_AV_aelem; | |
1922 | ||
1923 | case MDEREF_AV_pop_rv2av_aelem: /* expr->[...] */ | |
1924 | { | |
1925 | dSP; | |
1926 | sv = POPs; | |
1927 | PUTBACK; | |
1928 | goto do_AV_rv2av_aelem; | |
1929 | } | |
1930 | ||
1931 | case MDEREF_AV_gvsv_vivify_rv2av_aelem: /* $pkg->[...] */ | |
1932 | sv = UNOP_AUX_item_sv(++items); | |
1933 | assert(isGV_with_GP(sv)); | |
1934 | sv = GvSVn((GV*)sv); | |
1935 | goto do_AV_vivify_rv2av_aelem; | |
1936 | ||
1937 | case MDEREF_AV_padsv_vivify_rv2av_aelem: /* $lex->[...] */ | |
1938 | sv = PAD_SVl((++items)->pad_offset); | |
1939 | /* FALLTHROUGH */ | |
1940 | ||
1941 | do_AV_vivify_rv2av_aelem: | |
1942 | case MDEREF_AV_vivify_rv2av_aelem: /* vivify, ->[...] */ | |
1943 | /* this is the OPpDEREF action normally found at the end of | |
1944 | * ops like aelem, helem, rv2sv */ | |
1945 | sv = vivify_ref(sv, OPpDEREF_AV); | |
1946 | /* FALLTHROUGH */ | |
1947 | ||
1948 | do_AV_rv2av_aelem: | |
1949 | /* this is basically a copy of pp_rv2av when it just has the | |
1950 | * sKR/1 flags */ | |
1951 | SvGETMAGIC(sv); | |
1952 | if (LIKELY(SvROK(sv))) { | |
1953 | if (UNLIKELY(SvAMAGIC(sv))) { | |
1954 | sv = amagic_deref_call(sv, to_av_amg); | |
1955 | } | |
1956 | sv = SvRV(sv); | |
1957 | if (UNLIKELY(SvTYPE(sv) != SVt_PVAV)) | |
1958 | DIE(aTHX_ "Not an ARRAY reference"); | |
1959 | } | |
1960 | else if (SvTYPE(sv) != SVt_PVAV) { | |
1961 | if (!isGV_with_GP(sv)) | |
1962 | sv = (SV*)S_softref2xv_lite(aTHX_ sv, "an ARRAY", SVt_PVAV); | |
1963 | sv = MUTABLE_SV(GvAVn((GV*)sv)); | |
1964 | } | |
1965 | /* FALLTHROUGH */ | |
1966 | ||
1967 | do_AV_aelem: | |
1968 | { | |
1969 | /* retrieve the key; this may be either a lexical or package | |
1970 | * var (whose index/ptr is stored as an item) or a signed | |
1971 | * integer constant stored as an item. | |
1972 | */ | |
1973 | SV *elemsv; | |
1974 | IV elem = 0; /* to shut up stupid compiler warnings */ | |
1975 | ||
1976 | ||
1977 | assert(SvTYPE(sv) == SVt_PVAV); | |
1978 | ||
1979 | switch (actions & MDEREF_INDEX_MASK) { | |
1980 | case MDEREF_INDEX_none: | |
1981 | goto finish; | |
1982 | case MDEREF_INDEX_const: | |
1983 | elem = (++items)->iv; | |
1984 | break; | |
1985 | case MDEREF_INDEX_padsv: | |
1986 | elemsv = PAD_SVl((++items)->pad_offset); | |
1987 | goto check_elem; | |
1988 | case MDEREF_INDEX_gvsv: | |
1989 | elemsv = UNOP_AUX_item_sv(++items); | |
1990 | assert(isGV_with_GP(elemsv)); | |
1991 | elemsv = GvSVn((GV*)elemsv); | |
1992 | check_elem: | |
1993 | if (UNLIKELY(SvROK(elemsv) && !SvGAMAGIC(elemsv) | |
1994 | && ckWARN(WARN_MISC))) | |
1995 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
1996 | "Use of reference \"%"SVf"\" as array index", | |
1997 | SVfARG(elemsv)); | |
1998 | /* the only time that S_find_uninit_var() needs this | |
1999 | * is to determine which index value triggered the | |
2000 | * undef warning. So just update it here. Note that | |
2001 | * since we don't save and restore this var (e.g. for | |
2002 | * tie or overload execution), its value will be | |
2003 | * meaningless apart from just here */ | |
2004 | PL_multideref_pc = items; | |
2005 | elem = SvIV(elemsv); | |
2006 | break; | |
2007 | } | |
2008 | ||
2009 | ||
2010 | /* this is basically a copy of pp_aelem with OPpDEREF skipped */ | |
2011 | ||
2012 | if (!(actions & MDEREF_FLAG_last)) { | |
2013 | SV** svp = av_fetch((AV*)sv, elem, 1); | |
2014 | if (!svp || ! (sv=*svp)) | |
2015 | DIE(aTHX_ PL_no_aelem, elem); | |
2016 | break; | |
2017 | } | |
2018 | ||
2019 | if (PL_op->op_private & | |
2020 | (OPpMULTIDEREF_EXISTS|OPpMULTIDEREF_DELETE)) | |
2021 | { | |
2022 | if (PL_op->op_private & OPpMULTIDEREF_EXISTS) { | |
2023 | sv = av_exists((AV*)sv, elem) ? &PL_sv_yes : &PL_sv_no; | |
2024 | } | |
2025 | else { | |
2026 | I32 discard = (GIMME_V == G_VOID) ? G_DISCARD : 0; | |
2027 | sv = av_delete((AV*)sv, elem, discard); | |
2028 | if (discard) | |
2029 | return NORMAL; | |
2030 | if (!sv) | |
2031 | sv = &PL_sv_undef; | |
2032 | } | |
2033 | } | |
2034 | else { | |
2035 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; | |
2036 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
2037 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; | |
2038 | bool preeminent = TRUE; | |
2039 | AV *const av = (AV*)sv; | |
2040 | SV** svp; | |
2041 | ||
2042 | if (UNLIKELY(localizing)) { | |
2043 | MAGIC *mg; | |
2044 | HV *stash; | |
2045 | ||
2046 | /* If we can determine whether the element exist, | |
2047 | * Try to preserve the existenceness of a tied array | |
2048 | * element by using EXISTS and DELETE if possible. | |
2049 | * Fallback to FETCH and STORE otherwise. */ | |
2050 | if (SvCANEXISTDELETE(av)) | |
2051 | preeminent = av_exists(av, elem); | |
2052 | } | |
2053 | ||
2054 | svp = av_fetch(av, elem, lval && !defer); | |
2055 | ||
2056 | if (lval) { | |
2057 | if (!svp || !(sv = *svp)) { | |
2058 | IV len; | |
2059 | if (!defer) | |
2060 | DIE(aTHX_ PL_no_aelem, elem); | |
2061 | len = av_tindex(av); | |
2062 | sv = sv_2mortal(newSVavdefelem(av, | |
2063 | /* Resolve a negative index now, unless it points | |
2064 | * before the beginning of the array, in which | |
2065 | * case record it for error reporting in | |
2066 | * magic_setdefelem. */ | |
2067 | elem < 0 && len + elem >= 0 | |
2068 | ? len + elem : elem, 1)); | |
2069 | } | |
2070 | else { | |
2071 | if (UNLIKELY(localizing)) { | |
2072 | if (preeminent) { | |
2073 | save_aelem(av, elem, svp); | |
2074 | sv = *svp; /* may have changed */ | |
2075 | } | |
2076 | else | |
2077 | SAVEADELETE(av, elem); | |
2078 | } | |
2079 | } | |
2080 | } | |
2081 | else { | |
2082 | sv = (svp ? *svp : &PL_sv_undef); | |
2083 | /* see note in pp_helem() */ | |
2084 | if (SvRMAGICAL(av) && SvGMAGICAL(sv)) | |
2085 | mg_get(sv); | |
2086 | } | |
2087 | } | |
2088 | ||
2089 | } | |
2090 | finish: | |
2091 | { | |
2092 | dSP; | |
2093 | XPUSHs(sv); | |
2094 | RETURN; | |
2095 | } | |
2096 | /* NOTREACHED */ | |
2097 | ||
2098 | ||
2099 | ||
2100 | ||
2101 | case MDEREF_HV_padhv_helem: /* $lex{...} */ | |
2102 | sv = PAD_SVl((++items)->pad_offset); | |
2103 | goto do_HV_helem; | |
2104 | ||
2105 | case MDEREF_HV_gvhv_helem: /* $pkg{...} */ | |
2106 | sv = UNOP_AUX_item_sv(++items); | |
2107 | assert(isGV_with_GP(sv)); | |
2108 | sv = (SV*)GvHVn((GV*)sv); | |
2109 | goto do_HV_helem; | |
2110 | ||
2111 | case MDEREF_HV_pop_rv2hv_helem: /* expr->{...} */ | |
2112 | { | |
2113 | dSP; | |
2114 | sv = POPs; | |
2115 | PUTBACK; | |
2116 | goto do_HV_rv2hv_helem; | |
2117 | } | |
2118 | ||
2119 | case MDEREF_HV_gvsv_vivify_rv2hv_helem: /* $pkg->{...} */ | |
2120 | sv = UNOP_AUX_item_sv(++items); | |
2121 | assert(isGV_with_GP(sv)); | |
2122 | sv = GvSVn((GV*)sv); | |
2123 | goto do_HV_vivify_rv2hv_helem; | |
2124 | ||
2125 | case MDEREF_HV_padsv_vivify_rv2hv_helem: /* $lex->{...} */ | |
2126 | sv = PAD_SVl((++items)->pad_offset); | |
2127 | /* FALLTHROUGH */ | |
2128 | ||
2129 | do_HV_vivify_rv2hv_helem: | |
2130 | case MDEREF_HV_vivify_rv2hv_helem: /* vivify, ->{...} */ | |
2131 | /* this is the OPpDEREF action normally found at the end of | |
2132 | * ops like aelem, helem, rv2sv */ | |
2133 | sv = vivify_ref(sv, OPpDEREF_HV); | |
2134 | /* FALLTHROUGH */ | |
2135 | ||
2136 | do_HV_rv2hv_helem: | |
2137 | /* this is basically a copy of pp_rv2hv when it just has the | |
2138 | * sKR/1 flags (and pp_rv2hv is aliased to pp_rv2av) */ | |
2139 | ||
2140 | SvGETMAGIC(sv); | |
2141 | if (LIKELY(SvROK(sv))) { | |
2142 | if (UNLIKELY(SvAMAGIC(sv))) { | |
2143 | sv = amagic_deref_call(sv, to_hv_amg); | |
2144 | } | |
2145 | sv = SvRV(sv); | |
2146 | if (UNLIKELY(SvTYPE(sv) != SVt_PVHV)) | |
2147 | DIE(aTHX_ "Not a HASH reference"); | |
2148 | } | |
2149 | else if (SvTYPE(sv) != SVt_PVHV) { | |
2150 | if (!isGV_with_GP(sv)) | |
2151 | sv = (SV*)S_softref2xv_lite(aTHX_ sv, "a HASH", SVt_PVHV); | |
2152 | sv = MUTABLE_SV(GvHVn((GV*)sv)); | |
2153 | } | |
2154 | /* FALLTHROUGH */ | |
2155 | ||
2156 | do_HV_helem: | |
2157 | { | |
2158 | /* retrieve the key; this may be either a lexical / package | |
2159 | * var or a string constant, whose index/ptr is stored as an | |
2160 | * item | |
2161 | */ | |
2162 | SV *keysv = NULL; /* to shut up stupid compiler warnings */ | |
2163 | ||
2164 | assert(SvTYPE(sv) == SVt_PVHV); | |
2165 | ||
2166 | switch (actions & MDEREF_INDEX_MASK) { | |
2167 | case MDEREF_INDEX_none: | |
2168 | goto finish; | |
2169 | ||
2170 | case MDEREF_INDEX_const: | |
2171 | keysv = UNOP_AUX_item_sv(++items); | |
2172 | break; | |
2173 | ||
2174 | case MDEREF_INDEX_padsv: | |
2175 | keysv = PAD_SVl((++items)->pad_offset); | |
2176 | break; | |
2177 | ||
2178 | case MDEREF_INDEX_gvsv: | |
2179 | keysv = UNOP_AUX_item_sv(++items); | |
2180 | keysv = GvSVn((GV*)keysv); | |
2181 | break; | |
2182 | } | |
2183 | ||
2184 | /* see comment above about setting this var */ | |
2185 | PL_multideref_pc = items; | |
2186 | ||
2187 | ||
2188 | /* ensure that candidate CONSTs have been HEKified */ | |
2189 | assert( ((actions & MDEREF_INDEX_MASK) != MDEREF_INDEX_const) | |
2190 | || SvTYPE(keysv) >= SVt_PVMG | |
2191 | || !SvOK(keysv) | |
2192 | || SvROK(keysv) | |
2193 | || SvIsCOW_shared_hash(keysv)); | |
2194 | ||
2195 | /* this is basically a copy of pp_helem with OPpDEREF skipped */ | |
2196 | ||
2197 | if (!(actions & MDEREF_FLAG_last)) { | |
2198 | HE *he = hv_fetch_ent((HV*)sv, keysv, 1, 0); | |
2199 | if (!he || !(sv=HeVAL(he)) || sv == &PL_sv_undef) | |
2200 | DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv)); | |
2201 | break; | |
2202 | } | |
2203 | ||
2204 | if (PL_op->op_private & | |
2205 | (OPpMULTIDEREF_EXISTS|OPpMULTIDEREF_DELETE)) | |
2206 | { | |
2207 | if (PL_op->op_private & OPpMULTIDEREF_EXISTS) { | |
2208 | sv = hv_exists_ent((HV*)sv, keysv, 0) | |
2209 | ? &PL_sv_yes : &PL_sv_no; | |
2210 | } | |
2211 | else { | |
2212 | I32 discard = (GIMME_V == G_VOID) ? G_DISCARD : 0; | |
2213 | sv = hv_delete_ent((HV*)sv, keysv, discard, 0); | |
2214 | if (discard) | |
2215 | return NORMAL; | |
2216 | if (!sv) | |
2217 | sv = &PL_sv_undef; | |
2218 | } | |
2219 | } | |
2220 | else { | |
2221 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; | |
2222 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
2223 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; | |
2224 | bool preeminent = TRUE; | |
2225 | SV **svp; | |
2226 | HV * const hv = (HV*)sv; | |
2227 | HE* he; | |
2228 | ||
2229 | if (UNLIKELY(localizing)) { | |
2230 | MAGIC *mg; | |
2231 | HV *stash; | |
2232 | ||
2233 | /* If we can determine whether the element exist, | |
2234 | * Try to preserve the existenceness of a tied hash | |
2235 | * element by using EXISTS and DELETE if possible. | |
2236 | * Fallback to FETCH and STORE otherwise. */ | |
2237 | if (SvCANEXISTDELETE(hv)) | |
2238 | preeminent = hv_exists_ent(hv, keysv, 0); | |
2239 | } | |
2240 | ||
2241 | he = hv_fetch_ent(hv, keysv, lval && !defer, 0); | |
2242 | svp = he ? &HeVAL(he) : NULL; | |
2243 | ||
2244 | ||
2245 | if (lval) { | |
2246 | if (!svp || !(sv = *svp) || sv == &PL_sv_undef) { | |
2247 | SV* lv; | |
2248 | SV* key2; | |
2249 | if (!defer) | |
2250 | DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv)); | |
2251 | lv = sv_newmortal(); | |
2252 | sv_upgrade(lv, SVt_PVLV); | |
2253 | LvTYPE(lv) = 'y'; | |
2254 | sv_magic(lv, key2 = newSVsv(keysv), | |
2255 | PERL_MAGIC_defelem, NULL, 0); | |
2256 | /* sv_magic() increments refcount */ | |
2257 | SvREFCNT_dec_NN(key2); | |
2258 | LvTARG(lv) = SvREFCNT_inc_simple(hv); | |
2259 | LvTARGLEN(lv) = 1; | |
2260 | sv = lv; | |
2261 | } | |
2262 | else { | |
2263 | if (localizing) { | |
2264 | if (HvNAME_get(hv) && isGV(sv)) | |
2265 | save_gp(MUTABLE_GV(sv), | |
2266 | !(PL_op->op_flags & OPf_SPECIAL)); | |
2267 | else if (preeminent) { | |
2268 | save_helem_flags(hv, keysv, svp, | |
2269 | (PL_op->op_flags & OPf_SPECIAL) | |
2270 | ? 0 : SAVEf_SETMAGIC); | |
2271 | sv = *svp; /* may have changed */ | |
2272 | } | |
2273 | else | |
2274 | SAVEHDELETE(hv, keysv); | |
2275 | } | |
2276 | } | |
2277 | } | |
2278 | else { | |
2279 | sv = (svp && *svp ? *svp : &PL_sv_undef); | |
2280 | /* see note in pp_helem() */ | |
2281 | if (SvRMAGICAL(hv) && SvGMAGICAL(sv)) | |
2282 | mg_get(sv); | |
2283 | } | |
2284 | } | |
2285 | goto finish; | |
2286 | } | |
2287 | ||
2288 | } /* switch */ | |
2289 | ||
2290 | actions >>= MDEREF_SHIFT; | |
2291 | } /* while */ | |
2292 | /* NOTREACHED */ | |
2293 | } | |
2294 | ||
2295 | ||
a0d0e21e LW |
2296 | PP(pp_iter) |
2297 | { | |
20b7effb | 2298 | dSP; |
eb578fdb | 2299 | PERL_CONTEXT *cx; |
7d6c2cef | 2300 | SV *oldsv; |
1d7c1841 | 2301 | SV **itersvp; |
a0d0e21e | 2302 | |
924508f0 | 2303 | EXTEND(SP, 1); |
a0d0e21e | 2304 | cx = &cxstack[cxstack_ix]; |
1d7c1841 | 2305 | itersvp = CxITERVAR(cx); |
a48ce6be DM |
2306 | |
2307 | switch (CxTYPE(cx)) { | |
17c91640 | 2308 | |
b552b52c DM |
2309 | case CXt_LOOP_LAZYSV: /* string increment */ |
2310 | { | |
2311 | SV* cur = cx->blk_loop.state_u.lazysv.cur; | |
2312 | SV *end = cx->blk_loop.state_u.lazysv.end; | |
2313 | /* If the maximum is !SvOK(), pp_enteriter substitutes PL_sv_no. | |
2314 | It has SvPVX of "" and SvCUR of 0, which is what we want. */ | |
2315 | STRLEN maxlen = 0; | |
2316 | const char *max = SvPV_const(end, maxlen); | |
5d9574c1 | 2317 | if (UNLIKELY(SvNIOK(cur) || SvCUR(cur) > maxlen)) |
b552b52c DM |
2318 | RETPUSHNO; |
2319 | ||
2320 | oldsv = *itersvp; | |
5d9574c1 | 2321 | if (LIKELY(SvREFCNT(oldsv) == 1 && !SvMAGICAL(oldsv))) { |
b552b52c DM |
2322 | /* safe to reuse old SV */ |
2323 | sv_setsv(oldsv, cur); | |
a48ce6be | 2324 | } |
b552b52c DM |
2325 | else |
2326 | { | |
2327 | /* we need a fresh SV every time so that loop body sees a | |
2328 | * completely new SV for closures/references to work as | |
2329 | * they used to */ | |
2330 | *itersvp = newSVsv(cur); | |
fc2b2dca | 2331 | SvREFCNT_dec_NN(oldsv); |
b552b52c DM |
2332 | } |
2333 | if (strEQ(SvPVX_const(cur), max)) | |
2334 | sv_setiv(cur, 0); /* terminate next time */ | |
2335 | else | |
2336 | sv_inc(cur); | |
2337 | break; | |
2338 | } | |
a48ce6be | 2339 | |
fcef60b4 DM |
2340 | case CXt_LOOP_LAZYIV: /* integer increment */ |
2341 | { | |
2342 | IV cur = cx->blk_loop.state_u.lazyiv.cur; | |
5d9574c1 | 2343 | if (UNLIKELY(cur > cx->blk_loop.state_u.lazyiv.end)) |
89ea2908 | 2344 | RETPUSHNO; |
7f61b687 | 2345 | |
fcef60b4 | 2346 | oldsv = *itersvp; |
3db8f154 | 2347 | /* don't risk potential race */ |
5d9574c1 | 2348 | if (LIKELY(SvREFCNT(oldsv) == 1 && !SvMAGICAL(oldsv))) { |
eaa5c2d6 | 2349 | /* safe to reuse old SV */ |
fcef60b4 | 2350 | sv_setiv(oldsv, cur); |
eaa5c2d6 | 2351 | } |
1c846c1f | 2352 | else |
eaa5c2d6 GA |
2353 | { |
2354 | /* we need a fresh SV every time so that loop body sees a | |
2355 | * completely new SV for closures/references to work as they | |
2356 | * used to */ | |
fcef60b4 | 2357 | *itersvp = newSViv(cur); |
fc2b2dca | 2358 | SvREFCNT_dec_NN(oldsv); |
eaa5c2d6 | 2359 | } |
a2309040 | 2360 | |
5d9574c1 | 2361 | if (UNLIKELY(cur == IV_MAX)) { |
cdc1aa42 NC |
2362 | /* Handle end of range at IV_MAX */ |
2363 | cx->blk_loop.state_u.lazyiv.end = IV_MIN; | |
2364 | } else | |
2365 | ++cx->blk_loop.state_u.lazyiv.cur; | |
a48ce6be | 2366 | break; |
fcef60b4 | 2367 | } |
a48ce6be | 2368 | |
b552b52c | 2369 | case CXt_LOOP_FOR: /* iterate array */ |
7d6c2cef | 2370 | { |
89ea2908 | 2371 | |
7d6c2cef DM |
2372 | AV *av = cx->blk_loop.state_u.ary.ary; |
2373 | SV *sv; | |
2374 | bool av_is_stack = FALSE; | |
a8a20bb6 | 2375 | IV ix; |
7d6c2cef | 2376 | |
de080daa DM |
2377 | if (!av) { |
2378 | av_is_stack = TRUE; | |
2379 | av = PL_curstack; | |
2380 | } | |
2381 | if (PL_op->op_private & OPpITER_REVERSED) { | |
a8a20bb6 | 2382 | ix = --cx->blk_loop.state_u.ary.ix; |
5d9574c1 | 2383 | if (UNLIKELY(ix <= (av_is_stack ? cx->blk_loop.resetsp : -1))) |
de080daa | 2384 | RETPUSHNO; |
de080daa DM |
2385 | } |
2386 | else { | |
a8a20bb6 | 2387 | ix = ++cx->blk_loop.state_u.ary.ix; |
5d9574c1 | 2388 | if (UNLIKELY(ix > (av_is_stack ? cx->blk_oldsp : AvFILL(av)))) |
de080daa | 2389 | RETPUSHNO; |
a8a20bb6 | 2390 | } |
de080daa | 2391 | |
5d9574c1 | 2392 | if (UNLIKELY(SvMAGICAL(av) || AvREIFY(av))) { |
a8a20bb6 DM |
2393 | SV * const * const svp = av_fetch(av, ix, FALSE); |
2394 | sv = svp ? *svp : NULL; | |
2395 | } | |
2396 | else { | |
2397 | sv = AvARRAY(av)[ix]; | |
de080daa | 2398 | } |
ef3e5ea9 | 2399 | |
d39c26a6 FC |
2400 | if (UNLIKELY(cx->cx_type & CXp_FOR_LVREF)) { |
2401 | SvSetMagicSV(*itersvp, sv); | |
2402 | break; | |
2403 | } | |
2404 | ||
5d9574c1 DM |
2405 | if (LIKELY(sv)) { |
2406 | if (UNLIKELY(SvIS_FREED(sv))) { | |
f38aa882 DM |
2407 | *itersvp = NULL; |
2408 | Perl_croak(aTHX_ "Use of freed value in iteration"); | |
2409 | } | |
60779a30 | 2410 | if (SvPADTMP(sv)) { |
8e079c2a | 2411 | sv = newSVsv(sv); |
60779a30 | 2412 | } |
8e079c2a FC |
2413 | else { |
2414 | SvTEMP_off(sv); | |
2415 | SvREFCNT_inc_simple_void_NN(sv); | |
2416 | } | |
de080daa | 2417 | } |
a600f7e6 | 2418 | else if (!av_is_stack) { |
199f858d | 2419 | sv = newSVavdefelem(av, ix, 0); |
de080daa | 2420 | } |
a600f7e6 FC |
2421 | else |
2422 | sv = &PL_sv_undef; | |
a0d0e21e | 2423 | |
de080daa DM |
2424 | oldsv = *itersvp; |
2425 | *itersvp = sv; | |
2426 | SvREFCNT_dec(oldsv); | |
de080daa | 2427 | break; |
7d6c2cef | 2428 | } |
a48ce6be DM |
2429 | |
2430 | default: | |
2431 | DIE(aTHX_ "panic: pp_iter, type=%u", CxTYPE(cx)); | |
2432 | } | |
b552b52c | 2433 | RETPUSHYES; |
a0d0e21e LW |
2434 | } |
2435 | ||
ef07e810 DM |
2436 | /* |
2437 | A description of how taint works in pattern matching and substitution. | |
2438 | ||
284167a5 S |
2439 | This is all conditional on NO_TAINT_SUPPORT not being defined. Under |
2440 | NO_TAINT_SUPPORT, taint-related operations should become no-ops. | |
2441 | ||
4e19c54b | 2442 | While the pattern is being assembled/concatenated and then compiled, |
284167a5 S |
2443 | PL_tainted will get set (via TAINT_set) if any component of the pattern |
2444 | is tainted, e.g. /.*$tainted/. At the end of pattern compilation, | |
2445 | the RXf_TAINTED flag is set on the pattern if PL_tainted is set (via | |
1738e041 DM |
2446 | TAINT_get). It will also be set if any component of the pattern matches |
2447 | based on locale-dependent behavior. | |
ef07e810 | 2448 | |
0ab462a6 DM |
2449 | When the pattern is copied, e.g. $r = qr/..../, the SV holding the ref to |
2450 | the pattern is marked as tainted. This means that subsequent usage, such | |
284167a5 S |
2451 | as /x$r/, will set PL_tainted using TAINT_set, and thus RXf_TAINTED, |
2452 | on the new pattern too. | |
ef07e810 | 2453 | |
272d35c9 | 2454 | RXf_TAINTED_SEEN is used post-execution by the get magic code |
ef07e810 DM |
2455 | of $1 et al to indicate whether the returned value should be tainted. |
2456 | It is the responsibility of the caller of the pattern (i.e. pp_match, | |
2457 | pp_subst etc) to set this flag for any other circumstances where $1 needs | |
2458 | to be tainted. | |
2459 | ||
2460 | The taint behaviour of pp_subst (and pp_substcont) is quite complex. | |
2461 | ||
2462 | There are three possible sources of taint | |
2463 | * the source string | |
2464 | * the pattern (both compile- and run-time, RXf_TAINTED / RXf_TAINTED_SEEN) | |
2465 | * the replacement string (or expression under /e) | |
2466 | ||
2467 | There are four destinations of taint and they are affected by the sources | |
2468 | according to the rules below: | |
2469 | ||
2470 | * the return value (not including /r): | |
2471 | tainted by the source string and pattern, but only for the | |
2472 | number-of-iterations case; boolean returns aren't tainted; | |
2473 | * the modified string (or modified copy under /r): | |
2474 | tainted by the source string, pattern, and replacement strings; | |
2475 | * $1 et al: | |
2476 | tainted by the pattern, and under 'use re "taint"', by the source | |
2477 | string too; | |
2478 | * PL_taint - i.e. whether subsequent code (e.g. in a /e block) is tainted: | |
2479 | should always be unset before executing subsequent code. | |
2480 | ||
2481 | The overall action of pp_subst is: | |
2482 | ||
2483 | * at the start, set bits in rxtainted indicating the taint status of | |
2484 | the various sources. | |
2485 | ||
2486 | * After each pattern execution, update the SUBST_TAINT_PAT bit in | |
2487 | rxtainted if RXf_TAINTED_SEEN has been set, to indicate that the | |
2488 | pattern has subsequently become tainted via locale ops. | |
2489 | ||
2490 | * If control is being passed to pp_substcont to execute a /e block, | |
2491 | save rxtainted in the CXt_SUBST block, for future use by | |
2492 | pp_substcont. | |
2493 | ||
2494 | * Whenever control is being returned to perl code (either by falling | |
2495 | off the "end" of pp_subst/pp_substcont, or by entering a /e block), | |
2496 | use the flag bits in rxtainted to make all the appropriate types of | |
0ab462a6 DM |
2497 | destination taint visible; e.g. set RXf_TAINTED_SEEN so that $1 |
2498 | et al will appear tainted. | |
ef07e810 DM |
2499 | |
2500 | pp_match is just a simpler version of the above. | |
2501 | ||
2502 | */ | |
2503 | ||
a0d0e21e LW |
2504 | PP(pp_subst) |
2505 | { | |
20b7effb | 2506 | dSP; dTARG; |
eb578fdb | 2507 | PMOP *pm = cPMOP; |
a0d0e21e | 2508 | PMOP *rpm = pm; |
eb578fdb | 2509 | char *s; |
a0d0e21e | 2510 | char *strend; |
5c144d81 | 2511 | const char *c; |
a0d0e21e | 2512 | STRLEN clen; |
3c6ef0a5 FC |
2513 | SSize_t iters = 0; |
2514 | SSize_t maxiters; | |
a0d0e21e | 2515 | bool once; |
ef07e810 DM |
2516 | U8 rxtainted = 0; /* holds various SUBST_TAINT_* flag bits. |
2517 | See "how taint works" above */ | |
a0d0e21e | 2518 | char *orig; |
1ed74d04 | 2519 | U8 r_flags; |
eb578fdb | 2520 | REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
2521 | STRLEN len; |
2522 | int force_on_match = 0; | |
0bcc34c2 | 2523 | const I32 oldsave = PL_savestack_ix; |
792b2c16 | 2524 | STRLEN slen; |
26a74523 | 2525 | bool doutf8 = FALSE; /* whether replacement is in utf8 */ |
db2c6cb3 | 2526 | #ifdef PERL_ANY_COW |
ed252734 NC |
2527 | bool is_cow; |
2528 | #endif | |
a0714e2c | 2529 | SV *nsv = NULL; |
b770e143 | 2530 | /* known replacement string? */ |
eb578fdb | 2531 | SV *dstr = (pm->op_pmflags & PMf_CONST) ? POPs : NULL; |
a0d0e21e | 2532 | |
f410a211 NC |
2533 | PERL_ASYNC_CHECK(); |
2534 | ||
533c011a | 2535 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 2536 | TARG = POPs; |
6ffceeb7 | 2537 | else if (ARGTARG) |
59f00321 | 2538 | GETTARGET; |
a0d0e21e | 2539 | else { |
54b9620d | 2540 | TARG = DEFSV; |
a0d0e21e | 2541 | EXTEND(SP,1); |
1c846c1f | 2542 | } |
d9f424b2 | 2543 | |
64534138 | 2544 | SvGETMAGIC(TARG); /* must come before cow check */ |
db2c6cb3 | 2545 | #ifdef PERL_ANY_COW |
ed252734 NC |
2546 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, |
2547 | because they make integers such as 256 "false". */ | |
2548 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
2549 | #else | |
765f542d NC |
2550 | if (SvIsCOW(TARG)) |
2551 | sv_force_normal_flags(TARG,0); | |
ed252734 | 2552 | #endif |
8ca8a454 | 2553 | if (!(rpm->op_pmflags & PMf_NONDESTRUCT) |
8ca8a454 NC |
2554 | && (SvREADONLY(TARG) |
2555 | || ( ((SvTYPE(TARG) == SVt_PVGV && isGV_with_GP(TARG)) | |
2556 | || SvTYPE(TARG) > SVt_PVLV) | |
2557 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) | |
cb077ed2 | 2558 | Perl_croak_no_modify(); |
8ec5e241 NIS |
2559 | PUTBACK; |
2560 | ||
6ac6605d DM |
2561 | orig = SvPV_nomg(TARG, len); |
2562 | /* note we don't (yet) force the var into being a string; if we fail | |
2563 | * to match, we leave as-is; on successful match howeverm, we *will* | |
2564 | * coerce into a string, then repeat the match */ | |
4499db73 | 2565 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV || SvVOK(TARG)) |
a0d0e21e | 2566 | force_on_match = 1; |
20be6587 DM |
2567 | |
2568 | /* only replace once? */ | |
2569 | once = !(rpm->op_pmflags & PMf_GLOBAL); | |
2570 | ||
ef07e810 | 2571 | /* See "how taint works" above */ |
284167a5 | 2572 | if (TAINTING_get) { |
20be6587 DM |
2573 | rxtainted = ( |
2574 | (SvTAINTED(TARG) ? SUBST_TAINT_STR : 0) | |
284167a5 | 2575 | | (RX_ISTAINTED(rx) ? SUBST_TAINT_PAT : 0) |
20be6587 DM |
2576 | | ((pm->op_pmflags & PMf_RETAINT) ? SUBST_TAINT_RETAINT : 0) |
2577 | | ((once && !(rpm->op_pmflags & PMf_NONDESTRUCT)) | |
2578 | ? SUBST_TAINT_BOOLRET : 0)); | |
2579 | TAINT_NOT; | |
2580 | } | |
a12c0f56 | 2581 | |
a0d0e21e | 2582 | force_it: |
6ac6605d DM |
2583 | if (!pm || !orig) |
2584 | DIE(aTHX_ "panic: pp_subst, pm=%p, orig=%p", pm, orig); | |
a0d0e21e | 2585 | |
6ac6605d DM |
2586 | strend = orig + len; |
2587 | slen = DO_UTF8(TARG) ? utf8_length((U8*)orig, (U8*)strend) : len; | |
792b2c16 JH |
2588 | maxiters = 2 * slen + 10; /* We can match twice at each |
2589 | position, once with zero-length, | |
2590 | second time with non-zero. */ | |
a0d0e21e | 2591 | |
6a97c51d | 2592 | if (!RX_PRELEN(rx) && PL_curpm |
8d919b0a | 2593 | && !ReANY(rx)->mother_re) { |
3280af22 | 2594 | pm = PL_curpm; |
aaa362c4 | 2595 | rx = PM_GETRE(pm); |
a0d0e21e | 2596 | } |
6502e081 | 2597 | |
6e240d0b | 2598 | #ifdef PERL_SAWAMPERSAND |
6502e081 DM |
2599 | r_flags = ( RX_NPARENS(rx) |
2600 | || PL_sawampersand | |
6502e081 | 2601 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY)) |
5b0e71e9 | 2602 | || (rpm->op_pmflags & PMf_KEEPCOPY) |
6502e081 DM |
2603 | ) |
2604 | ? REXEC_COPY_STR | |
2605 | : 0; | |
6e240d0b FC |
2606 | #else |
2607 | r_flags = REXEC_COPY_STR; | |
2608 | #endif | |
7fba1cd6 | 2609 | |
0395280b | 2610 | if (!CALLREGEXEC(rx, orig, strend, orig, 0, TARG, NULL, r_flags)) |
8b64c330 | 2611 | { |
5e79dfb9 DM |
2612 | SPAGAIN; |
2613 | PUSHs(rpm->op_pmflags & PMf_NONDESTRUCT ? TARG : &PL_sv_no); | |
2614 | LEAVE_SCOPE(oldsave); | |
2615 | RETURN; | |
2616 | } | |
1754320d FC |
2617 | PL_curpm = pm; |
2618 | ||
71be2cbc | 2619 | /* known replacement string? */ |
f272994b | 2620 | if (dstr) { |
8514a05a JH |
2621 | /* replacement needing upgrading? */ |
2622 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 2623 | nsv = sv_newmortal(); |
4a176938 | 2624 | SvSetSV(nsv, dstr); |
47e13f24 | 2625 | if (IN_ENCODING) |
ad2de1b2 | 2626 | sv_recode_to_utf8(nsv, _get_encoding()); |
8514a05a JH |
2627 | else |
2628 | sv_utf8_upgrade(nsv); | |
5c144d81 | 2629 | c = SvPV_const(nsv, clen); |
4a176938 JH |
2630 | doutf8 = TRUE; |
2631 | } | |
2632 | else { | |
5c144d81 | 2633 | c = SvPV_const(dstr, clen); |
4a176938 | 2634 | doutf8 = DO_UTF8(dstr); |
8514a05a | 2635 | } |
bb933b9b FC |
2636 | |
2637 | if (SvTAINTED(dstr)) | |
2638 | rxtainted |= SUBST_TAINT_REPL; | |
f272994b A |
2639 | } |
2640 | else { | |
6136c704 | 2641 | c = NULL; |
f272994b A |
2642 | doutf8 = FALSE; |
2643 | } | |
2644 | ||
71be2cbc | 2645 | /* can do inplace substitution? */ |
ed252734 | 2646 | if (c |
db2c6cb3 | 2647 | #ifdef PERL_ANY_COW |
ed252734 NC |
2648 | && !is_cow |
2649 | #endif | |
fbfb1899 | 2650 | && (I32)clen <= RX_MINLENRET(rx) |
9cefd268 FC |
2651 | && ( once |
2652 | || !(r_flags & REXEC_COPY_STR) | |
2653 | || (!SvGMAGICAL(dstr) && !(RX_EXTFLAGS(rx) & RXf_EVAL_SEEN)) | |
2654 | ) | |
dbc200c5 | 2655 | && !(RX_EXTFLAGS(rx) & RXf_NO_INPLACE_SUBST) |
8ca8a454 NC |
2656 | && (!doutf8 || SvUTF8(TARG)) |
2657 | && !(rpm->op_pmflags & PMf_NONDESTRUCT)) | |
8b030b38 | 2658 | { |
ec911639 | 2659 | |
db2c6cb3 | 2660 | #ifdef PERL_ANY_COW |
ed252734 | 2661 | if (SvIsCOW(TARG)) { |
f7a8268c | 2662 | if (!force_on_match) |
ed252734 | 2663 | goto have_a_cow; |
f7a8268c | 2664 | assert(SvVOK(TARG)); |
ed252734 NC |
2665 | } |
2666 | #endif | |
71be2cbc | 2667 | if (force_on_match) { |
6ac6605d DM |
2668 | /* redo the first match, this time with the orig var |
2669 | * forced into being a string */ | |
71be2cbc | 2670 | force_on_match = 0; |
6ac6605d | 2671 | orig = SvPV_force_nomg(TARG, len); |
71be2cbc | 2672 | goto force_it; |
2673 | } | |
39b40493 | 2674 | |
71be2cbc | 2675 | if (once) { |
c67ab8f2 | 2676 | char *d, *m; |
20be6587 DM |
2677 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
2678 | rxtainted |= SUBST_TAINT_PAT; | |
07bc277f NC |
2679 | m = orig + RX_OFFS(rx)[0].start; |
2680 | d = orig + RX_OFFS(rx)[0].end; | |
71be2cbc | 2681 | s = orig; |
2682 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2ec7214c | 2683 | I32 i; |
71be2cbc | 2684 | if (clen) { |
2685 | Copy(c, m, clen, char); | |
2686 | m += clen; | |
a0d0e21e | 2687 | } |
71be2cbc | 2688 | i = strend - d; |
2689 | if (i > 0) { | |
2690 | Move(d, m, i, char); | |
2691 | m += i; | |
a0d0e21e | 2692 | } |
71be2cbc | 2693 | *m = '\0'; |
2694 | SvCUR_set(TARG, m - s); | |
2695 | } | |
2ec7214c DM |
2696 | else { /* faster from front */ |
2697 | I32 i = m - s; | |
71be2cbc | 2698 | d -= clen; |
2ec7214c DM |
2699 | if (i > 0) |
2700 | Move(s, d - i, i, char); | |
71be2cbc | 2701 | sv_chop(TARG, d-i); |
71be2cbc | 2702 | if (clen) |
c947cd8d | 2703 | Copy(c, d, clen, char); |
71be2cbc | 2704 | } |
8ec5e241 | 2705 | SPAGAIN; |
8ca8a454 | 2706 | PUSHs(&PL_sv_yes); |
71be2cbc | 2707 | } |
2708 | else { | |
c67ab8f2 | 2709 | char *d, *m; |
0395280b | 2710 | d = s = RX_OFFS(rx)[0].start + orig; |
71be2cbc | 2711 | do { |
2b25edcf | 2712 | I32 i; |
5d9574c1 | 2713 | if (UNLIKELY(iters++ > maxiters)) |
cea2e8a9 | 2714 | DIE(aTHX_ "Substitution loop"); |
5d9574c1 | 2715 | if (UNLIKELY(RX_MATCH_TAINTED(rx))) /* run time pattern taint, eg locale */ |
20be6587 | 2716 | rxtainted |= SUBST_TAINT_PAT; |
07bc277f | 2717 | m = RX_OFFS(rx)[0].start + orig; |
155aba94 | 2718 | if ((i = m - s)) { |
71be2cbc | 2719 | if (s != d) |
2720 | Move(s, d, i, char); | |
2721 | d += i; | |
a0d0e21e | 2722 | } |
71be2cbc | 2723 | if (clen) { |
2724 | Copy(c, d, clen, char); | |
2725 | d += clen; | |
2726 | } | |
07bc277f | 2727 | s = RX_OFFS(rx)[0].end + orig; |
7ce41e5c FC |
2728 | } while (CALLREGEXEC(rx, s, strend, orig, |
2729 | s == m, /* don't match same null twice */ | |
f722798b | 2730 | TARG, NULL, |
d5e7783a | 2731 | REXEC_NOT_FIRST|REXEC_IGNOREPOS|REXEC_FAIL_ON_UNDERFLOW)); |
71be2cbc | 2732 | if (s != d) { |
2b25edcf | 2733 | I32 i = strend - s; |
aa07b2f6 | 2734 | SvCUR_set(TARG, d - SvPVX_const(TARG) + i); |
71be2cbc | 2735 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e | 2736 | } |
8ec5e241 | 2737 | SPAGAIN; |
3c6ef0a5 | 2738 | mPUSHi(iters); |
a0d0e21e LW |
2739 | } |
2740 | } | |
ff6e92e8 | 2741 | else { |
1754320d | 2742 | bool first; |
c67ab8f2 | 2743 | char *m; |
1754320d | 2744 | SV *repl; |
a0d0e21e | 2745 | if (force_on_match) { |
6ac6605d DM |
2746 | /* redo the first match, this time with the orig var |
2747 | * forced into being a string */ | |
a0d0e21e | 2748 | force_on_match = 0; |
0c1438a1 NC |
2749 | if (rpm->op_pmflags & PMf_NONDESTRUCT) { |
2750 | /* I feel that it should be possible to avoid this mortal copy | |
2751 | given that the code below copies into a new destination. | |
2752 | However, I suspect it isn't worth the complexity of | |
2753 | unravelling the C<goto force_it> for the small number of | |
2754 | cases where it would be viable to drop into the copy code. */ | |
2755 | TARG = sv_2mortal(newSVsv(TARG)); | |
2756 | } | |
6ac6605d | 2757 | orig = SvPV_force_nomg(TARG, len); |
a0d0e21e LW |
2758 | goto force_it; |
2759 | } | |
db2c6cb3 | 2760 | #ifdef PERL_ANY_COW |
ed252734 NC |
2761 | have_a_cow: |
2762 | #endif | |
20be6587 DM |
2763 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
2764 | rxtainted |= SUBST_TAINT_PAT; | |
1754320d | 2765 | repl = dstr; |
0395280b DM |
2766 | s = RX_OFFS(rx)[0].start + orig; |
2767 | dstr = newSVpvn_flags(orig, s-orig, | |
2768 | SVs_TEMP | (DO_UTF8(TARG) ? SVf_UTF8 : 0)); | |
a0d0e21e | 2769 | if (!c) { |
eb578fdb | 2770 | PERL_CONTEXT *cx; |
8ec5e241 | 2771 | SPAGAIN; |
0395280b | 2772 | m = orig; |
20be6587 DM |
2773 | /* note that a whole bunch of local vars are saved here for |
2774 | * use by pp_substcont: here's a list of them in case you're | |
2775 | * searching for places in this sub that uses a particular var: | |
2776 | * iters maxiters r_flags oldsave rxtainted orig dstr targ | |
2777 | * s m strend rx once */ | |
a0d0e21e | 2778 | PUSHSUBST(cx); |
20e98b0f | 2779 | RETURNOP(cPMOP->op_pmreplrootu.op_pmreplroot); |
a0d0e21e | 2780 | } |
1754320d | 2781 | first = TRUE; |
a0d0e21e | 2782 | do { |
5d9574c1 | 2783 | if (UNLIKELY(iters++ > maxiters)) |
cea2e8a9 | 2784 | DIE(aTHX_ "Substitution loop"); |
5d9574c1 | 2785 | if (UNLIKELY(RX_MATCH_TAINTED(rx))) |
20be6587 | 2786 | rxtainted |= SUBST_TAINT_PAT; |
07bc277f | 2787 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
c67ab8f2 DM |
2788 | char *old_s = s; |
2789 | char *old_orig = orig; | |
6502e081 | 2790 | assert(RX_SUBOFFSET(rx) == 0); |
c67ab8f2 | 2791 | |
07bc277f | 2792 | orig = RX_SUBBEG(rx); |
c67ab8f2 DM |
2793 | s = orig + (old_s - old_orig); |
2794 | strend = s + (strend - old_s); | |
a0d0e21e | 2795 | } |
07bc277f | 2796 | m = RX_OFFS(rx)[0].start + orig; |
64534138 | 2797 | sv_catpvn_nomg_maybeutf8(dstr, s, m - s, DO_UTF8(TARG)); |
07bc277f | 2798 | s = RX_OFFS(rx)[0].end + orig; |
1754320d FC |
2799 | if (first) { |
2800 | /* replacement already stringified */ | |
2801 | if (clen) | |
64534138 | 2802 | sv_catpvn_nomg_maybeutf8(dstr, c, clen, doutf8); |
1754320d FC |
2803 | first = FALSE; |
2804 | } | |
2805 | else { | |
47e13f24 | 2806 | if (IN_ENCODING) { |
1754320d FC |
2807 | if (!nsv) nsv = sv_newmortal(); |
2808 | sv_copypv(nsv, repl); | |
ad2de1b2 | 2809 | if (!DO_UTF8(nsv)) sv_recode_to_utf8(nsv, _get_encoding()); |
1754320d FC |
2810 | sv_catsv(dstr, nsv); |
2811 | } | |
2812 | else sv_catsv(dstr, repl); | |
5d9574c1 | 2813 | if (UNLIKELY(SvTAINTED(repl))) |
bb933b9b | 2814 | rxtainted |= SUBST_TAINT_REPL; |
1754320d | 2815 | } |
a0d0e21e LW |
2816 | if (once) |
2817 | break; | |
f9f4320a | 2818 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
d5e7783a DM |
2819 | TARG, NULL, |
2820 | REXEC_NOT_FIRST|REXEC_IGNOREPOS|REXEC_FAIL_ON_UNDERFLOW)); | |
64534138 | 2821 | sv_catpvn_nomg_maybeutf8(dstr, s, strend - s, DO_UTF8(TARG)); |
748a9306 | 2822 | |
8ca8a454 NC |
2823 | if (rpm->op_pmflags & PMf_NONDESTRUCT) { |
2824 | /* From here on down we're using the copy, and leaving the original | |
2825 | untouched. */ | |
2826 | TARG = dstr; | |
2827 | SPAGAIN; | |
2828 | PUSHs(dstr); | |
2829 | } else { | |
db2c6cb3 | 2830 | #ifdef PERL_ANY_COW |
8ca8a454 NC |
2831 | /* The match may make the string COW. If so, brilliant, because |
2832 | that's just saved us one malloc, copy and free - the regexp has | |
2833 | donated the old buffer, and we malloc an entirely new one, rather | |
2834 | than the regexp malloc()ing a buffer and copying our original, | |
2835 | only for us to throw it away here during the substitution. */ | |
2836 | if (SvIsCOW(TARG)) { | |
2837 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
2838 | } else | |
ed252734 | 2839 | #endif |
8ca8a454 NC |
2840 | { |
2841 | SvPV_free(TARG); | |
2842 | } | |
2843 | SvPV_set(TARG, SvPVX(dstr)); | |
2844 | SvCUR_set(TARG, SvCUR(dstr)); | |
2845 | SvLEN_set(TARG, SvLEN(dstr)); | |
64534138 | 2846 | SvFLAGS(TARG) |= SvUTF8(dstr); |
8ca8a454 | 2847 | SvPV_set(dstr, NULL); |
748a9306 | 2848 | |
8ca8a454 | 2849 | SPAGAIN; |
3c6ef0a5 | 2850 | mPUSHi(iters); |
8ca8a454 NC |
2851 | } |
2852 | } | |
2853 | ||
2854 | if (!(rpm->op_pmflags & PMf_NONDESTRUCT)) { | |
2855 | (void)SvPOK_only_UTF8(TARG); | |
a0d0e21e | 2856 | } |
20be6587 | 2857 | |
ef07e810 | 2858 | /* See "how taint works" above */ |
284167a5 | 2859 | if (TAINTING_get) { |
20be6587 DM |
2860 | if ((rxtainted & SUBST_TAINT_PAT) || |
2861 | ((rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) == | |
2862 | (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
2863 | ) | |
2864 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
2865 | ||
2866 | if (!(rxtainted & SUBST_TAINT_BOOLRET) | |
2867 | && (rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT)) | |
2868 | ) | |
2869 | SvTAINTED_on(TOPs); /* taint return value */ | |
2870 | else | |
2871 | SvTAINTED_off(TOPs); /* may have got tainted earlier */ | |
2872 | ||
2873 | /* needed for mg_set below */ | |
284167a5 S |
2874 | TAINT_set( |
2875 | cBOOL(rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL)) | |
2876 | ); | |
20be6587 DM |
2877 | SvTAINT(TARG); |
2878 | } | |
2879 | SvSETMAGIC(TARG); /* PL_tainted must be correctly set for this mg_set */ | |
2880 | TAINT_NOT; | |
f1a76097 DM |
2881 | LEAVE_SCOPE(oldsave); |
2882 | RETURN; | |
a0d0e21e LW |
2883 | } |
2884 | ||
2885 | PP(pp_grepwhile) | |
2886 | { | |
20b7effb | 2887 | dSP; |
a0d0e21e LW |
2888 | |
2889 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2890 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2891 | ++*PL_markstack_ptr; | |
b2a2a901 | 2892 | FREETMPS; |
d343c3ef | 2893 | LEAVE_with_name("grep_item"); /* exit inner scope */ |
a0d0e21e LW |
2894 | |
2895 | /* All done yet? */ | |
5d9574c1 | 2896 | if (UNLIKELY(PL_stack_base + *PL_markstack_ptr > SP)) { |
a0d0e21e | 2897 | I32 items; |
c4420975 | 2898 | const I32 gimme = GIMME_V; |
a0d0e21e | 2899 | |
d343c3ef | 2900 | LEAVE_with_name("grep"); /* exit outer scope */ |
a0d0e21e | 2901 | (void)POPMARK; /* pop src */ |
3280af22 | 2902 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2903 | (void)POPMARK; /* pop dst */ |
3280af22 | 2904 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2905 | if (gimme == G_SCALAR) { |
7cc47870 | 2906 | if (PL_op->op_private & OPpGREP_LEX) { |
c4420975 | 2907 | SV* const sv = sv_newmortal(); |
7cc47870 RGS |
2908 | sv_setiv(sv, items); |
2909 | PUSHs(sv); | |
2910 | } | |
2911 | else { | |
2912 | dTARGET; | |
2913 | XPUSHi(items); | |
2914 | } | |
a0d0e21e | 2915 | } |
54310121 | 2916 | else if (gimme == G_ARRAY) |
2917 | SP += items; | |
a0d0e21e LW |
2918 | RETURN; |
2919 | } | |
2920 | else { | |
2921 | SV *src; | |
2922 | ||
d343c3ef | 2923 | ENTER_with_name("grep_item"); /* enter inner scope */ |
1d7c1841 | 2924 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2925 | |
3280af22 | 2926 | src = PL_stack_base[*PL_markstack_ptr]; |
60779a30 | 2927 | if (SvPADTMP(src)) { |
a0ed822e FC |
2928 | src = PL_stack_base[*PL_markstack_ptr] = sv_mortalcopy(src); |
2929 | PL_tmps_floor++; | |
2930 | } | |
a0d0e21e | 2931 | SvTEMP_off(src); |
59f00321 RGS |
2932 | if (PL_op->op_private & OPpGREP_LEX) |
2933 | PAD_SVl(PL_op->op_targ) = src; | |
2934 | else | |
414bf5ae | 2935 | DEFSV_set(src); |
a0d0e21e LW |
2936 | |
2937 | RETURNOP(cLOGOP->op_other); | |
2938 | } | |
2939 | } | |
2940 | ||
2941 | PP(pp_leavesub) | |
2942 | { | |
20b7effb | 2943 | dSP; |
a0d0e21e LW |
2944 | SV **mark; |
2945 | SV **newsp; | |
2946 | PMOP *newpm; | |
2947 | I32 gimme; | |
eb578fdb | 2948 | PERL_CONTEXT *cx; |
b0d9ce38 | 2949 | SV *sv; |
a0d0e21e | 2950 | |
9850bf21 RH |
2951 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2952 | return 0; | |
2953 | ||
a0d0e21e | 2954 | POPBLOCK(cx,newpm); |
5dd42e15 | 2955 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2956 | |
a1f49e72 | 2957 | TAINT_NOT; |
a0d0e21e LW |
2958 | if (gimme == G_SCALAR) { |
2959 | MARK = newsp + 1; | |
5d9574c1 | 2960 | if (LIKELY(MARK <= SP)) { |
a8bba7fa | 2961 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
6f48390a FC |
2962 | if (SvTEMP(TOPs) && SvREFCNT(TOPs) == 1 |
2963 | && !SvMAGICAL(TOPs)) { | |
a29cdaf0 IZ |
2964 | *MARK = SvREFCNT_inc(TOPs); |
2965 | FREETMPS; | |
2966 | sv_2mortal(*MARK); | |
cd06dffe GS |
2967 | } |
2968 | else { | |
959e3673 | 2969 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2970 | FREETMPS; |
959e3673 | 2971 | *MARK = sv_mortalcopy(sv); |
fc2b2dca | 2972 | SvREFCNT_dec_NN(sv); |
a29cdaf0 | 2973 | } |
cd06dffe | 2974 | } |
6f48390a FC |
2975 | else if (SvTEMP(TOPs) && SvREFCNT(TOPs) == 1 |
2976 | && !SvMAGICAL(TOPs)) { | |
767eda44 | 2977 | *MARK = TOPs; |
767eda44 | 2978 | } |
cd06dffe | 2979 | else |
767eda44 | 2980 | *MARK = sv_mortalcopy(TOPs); |
cd06dffe GS |
2981 | } |
2982 | else { | |
f86702cc | 2983 | MEXTEND(MARK, 0); |
3280af22 | 2984 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2985 | } |
2986 | SP = MARK; | |
2987 | } | |
54310121 | 2988 | else if (gimme == G_ARRAY) { |
f86702cc | 2989 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
6f48390a FC |
2990 | if (!SvTEMP(*MARK) || SvREFCNT(*MARK) != 1 |
2991 | || SvMAGICAL(*MARK)) { | |
f86702cc | 2992 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2993 | TAINT_NOT; /* Each item is independent */ |
2994 | } | |
f86702cc | 2995 | } |
a0d0e21e | 2996 | } |
f86702cc | 2997 | PUTBACK; |
1c846c1f | 2998 | |
a57c6685 | 2999 | LEAVE; |
b0d9ce38 | 3000 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
25375124 | 3001 | cxstack_ix--; |
3280af22 | 3002 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 3003 | |
b0d9ce38 | 3004 | LEAVESUB(sv); |
f39bc417 | 3005 | return cx->blk_sub.retop; |
a0d0e21e LW |
3006 | } |
3007 | ||
3008 | PP(pp_entersub) | |
3009 | { | |
20b7effb | 3010 | dSP; dPOPss; |
a0d0e21e | 3011 | GV *gv; |
eb578fdb KW |
3012 | CV *cv; |
3013 | PERL_CONTEXT *cx; | |
5d94fbed | 3014 | I32 gimme; |
a9c4fd4e | 3015 | const bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e | 3016 | |
f5719c02 | 3017 | if (UNLIKELY(!sv)) |
cea2e8a9 | 3018 | DIE(aTHX_ "Not a CODE reference"); |
f5719c02 DM |
3019 | /* This is overwhelmingly the most common case: */ |
3020 | if (!LIKELY(SvTYPE(sv) == SVt_PVGV && (cv = GvCVu((const GV *)sv)))) { | |
313107ce DM |
3021 | switch (SvTYPE(sv)) { |
3022 | case SVt_PVGV: | |
3023 | we_have_a_glob: | |
3024 | if (!(cv = GvCVu((const GV *)sv))) { | |
3025 | HV *stash; | |
3026 | cv = sv_2cv(sv, &stash, &gv, 0); | |
3027 | } | |
3028 | if (!cv) { | |
3029 | ENTER; | |
3030 | SAVETMPS; | |
3031 | goto try_autoload; | |
3032 | } | |
3033 | break; | |
3034 | case SVt_PVLV: | |
3035 | if(isGV_with_GP(sv)) goto we_have_a_glob; | |
924ba076 | 3036 | /* FALLTHROUGH */ |
313107ce DM |
3037 | default: |
3038 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ | |
3039 | if (hasargs) | |
3040 | SP = PL_stack_base + POPMARK; | |
3041 | else | |
3042 | (void)POPMARK; | |
3043 | RETURN; | |
3044 | } | |
3045 | SvGETMAGIC(sv); | |
3046 | if (SvROK(sv)) { | |
3047 | if (SvAMAGIC(sv)) { | |
3048 | sv = amagic_deref_call(sv, to_cv_amg); | |
3049 | /* Don't SPAGAIN here. */ | |
3050 | } | |
3051 | } | |
3052 | else { | |
3053 | const char *sym; | |
3054 | STRLEN len; | |
3055 | if (!SvOK(sv)) | |
3056 | DIE(aTHX_ PL_no_usym, "a subroutine"); | |
3057 | sym = SvPV_nomg_const(sv, len); | |
3058 | if (PL_op->op_private & HINT_STRICT_REFS) | |
3059 | DIE(aTHX_ "Can't use string (\"%" SVf32 "\"%s) as a subroutine ref while \"strict refs\" in use", sv, len>32 ? "..." : ""); | |
3060 | cv = get_cvn_flags(sym, len, GV_ADD|SvUTF8(sv)); | |
3061 | break; | |
3062 | } | |
3063 | cv = MUTABLE_CV(SvRV(sv)); | |
3064 | if (SvTYPE(cv) == SVt_PVCV) | |
3065 | break; | |
924ba076 | 3066 | /* FALLTHROUGH */ |
313107ce DM |
3067 | case SVt_PVHV: |
3068 | case SVt_PVAV: | |
3069 | DIE(aTHX_ "Not a CODE reference"); | |
3070 | /* This is the second most common case: */ | |
3071 | case SVt_PVCV: | |
3072 | cv = MUTABLE_CV(sv); | |
3073 | break; | |
3074 | } | |
f5719c02 | 3075 | } |
a0d0e21e | 3076 | |
a57c6685 | 3077 | ENTER; |
a0d0e21e LW |
3078 | |
3079 | retry: | |
f5719c02 | 3080 | if (UNLIKELY(CvCLONE(cv) && ! CvCLONED(cv))) |
541ed3a9 | 3081 | DIE(aTHX_ "Closure prototype called"); |
f5719c02 | 3082 | if (UNLIKELY(!CvROOT(cv) && !CvXSUB(cv))) { |
2f349aa0 NC |
3083 | GV* autogv; |
3084 | SV* sub_name; | |
3085 | ||
3086 | /* anonymous or undef'd function leaves us no recourse */ | |
ae77754a FC |
3087 | if (CvLEXICAL(cv) && CvHASGV(cv)) |
3088 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", | |
ecf05a58 | 3089 | SVfARG(cv_name(cv, NULL, 0))); |
ae77754a | 3090 | if (CvANON(cv) || !CvHASGV(cv)) { |
2f349aa0 | 3091 | DIE(aTHX_ "Undefined subroutine called"); |
7d2057d8 | 3092 | } |
2f349aa0 NC |
3093 | |
3094 | /* autoloaded stub? */ | |
ae77754a | 3095 | if (cv != GvCV(gv = CvGV(cv))) { |
2f349aa0 NC |
3096 | cv = GvCV(gv); |
3097 | } | |
3098 | /* should call AUTOLOAD now? */ | |
3099 | else { | |
7b52d656 | 3100 | try_autoload: |
d1089224 BF |
3101 | if ((autogv = gv_autoload_pvn(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
3102 | GvNAMEUTF8(gv) ? SVf_UTF8 : 0))) | |
2f349aa0 NC |
3103 | { |
3104 | cv = GvCV(autogv); | |
3105 | } | |
2f349aa0 | 3106 | else { |
c220e1a1 | 3107 | sorry: |
2f349aa0 | 3108 | sub_name = sv_newmortal(); |
6136c704 | 3109 | gv_efullname3(sub_name, gv, NULL); |
be2597df | 3110 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", SVfARG(sub_name)); |
2f349aa0 NC |
3111 | } |
3112 | } | |
3113 | if (!cv) | |
c220e1a1 | 3114 | goto sorry; |
2f349aa0 | 3115 | goto retry; |
a0d0e21e LW |
3116 | } |
3117 | ||
f5719c02 DM |
3118 | if (UNLIKELY((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) |
3119 | && !CvNODEBUG(cv))) | |
3120 | { | |
005a8a35 | 3121 | Perl_get_db_sub(aTHX_ &sv, cv); |
a9ef256d NC |
3122 | if (CvISXSUB(cv)) |
3123 | PL_curcopdb = PL_curcop; | |
1ad62f64 BR |
3124 | if (CvLVALUE(cv)) { |
3125 | /* check for lsub that handles lvalue subroutines */ | |
07b605e5 | 3126 | cv = GvCV(gv_fetchpvs("DB::lsub", GV_ADDMULTI, SVt_PVCV)); |
1ad62f64 BR |
3127 | /* if lsub not found then fall back to DB::sub */ |
3128 | if (!cv) cv = GvCV(PL_DBsub); | |
3129 | } else { | |
3130 | cv = GvCV(PL_DBsub); | |
3131 | } | |
a9ef256d | 3132 | |
ccafdc96 RGS |
3133 | if (!cv || (!CvXSUB(cv) && !CvSTART(cv))) |
3134 | DIE(aTHX_ "No DB::sub routine defined"); | |
67caa1fe | 3135 | } |
a0d0e21e | 3136 | |
f5719c02 DM |
3137 | gimme = GIMME_V; |
3138 | ||
aed2304a | 3139 | if (!(CvISXSUB(cv))) { |
f1025168 | 3140 | /* This path taken at least 75% of the time */ |
a0d0e21e | 3141 | dMARK; |
b70d5558 | 3142 | PADLIST * const padlist = CvPADLIST(cv); |
3689ad62 | 3143 | I32 depth; |
f5719c02 | 3144 | |
a0d0e21e LW |
3145 | PUSHBLOCK(cx, CXt_SUB, MARK); |
3146 | PUSHSUB(cx); | |
f39bc417 | 3147 | cx->blk_sub.retop = PL_op->op_next; |
3689ad62 | 3148 | if (UNLIKELY((depth = ++CvDEPTH(cv)) >= 2)) { |
3a76ca88 | 3149 | PERL_STACK_OVERFLOW_CHECK(); |
3689ad62 | 3150 | pad_push(padlist, depth); |
a0d0e21e | 3151 | } |
3a76ca88 | 3152 | SAVECOMPPAD(); |
3689ad62 | 3153 | PAD_SET_CUR_NOSAVE(padlist, depth); |
f5719c02 | 3154 | if (LIKELY(hasargs)) { |
10533ace | 3155 | AV *const av = MUTABLE_AV(PAD_SVl(0)); |
bdf02c57 DM |
3156 | SSize_t items; |
3157 | AV **defavp; | |
3158 | ||
f5719c02 | 3159 | if (UNLIKELY(AvREAL(av))) { |
221373f0 GS |
3160 | /* @_ is normally not REAL--this should only ever |
3161 | * happen when DB::sub() calls things that modify @_ */ | |
3162 | av_clear(av); | |
3163 | AvREAL_off(av); | |
3164 | AvREIFY_on(av); | |
3165 | } | |
bdf02c57 DM |
3166 | defavp = &GvAV(PL_defgv); |
3167 | cx->blk_sub.savearray = *defavp; | |
3168 | *defavp = MUTABLE_AV(SvREFCNT_inc_simple_NN(av)); | |
dd2155a4 | 3169 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 3170 | cx->blk_sub.argarray = av; |
bdf02c57 | 3171 | items = SP - MARK; |
a0d0e21e | 3172 | |
f5719c02 | 3173 | if (UNLIKELY(items - 1 > AvMAX(av))) { |
77d27ef6 SF |
3174 | SV **ary = AvALLOC(av); |
3175 | AvMAX(av) = items - 1; | |
3176 | Renew(ary, items, SV*); | |
3177 | AvALLOC(av) = ary; | |
3178 | AvARRAY(av) = ary; | |
3179 | } | |
3180 | ||
bdf02c57 | 3181 | Copy(MARK+1,AvARRAY(av),items,SV*); |
93965878 | 3182 | AvFILLp(av) = items - 1; |
1c846c1f | 3183 | |
b479c9f2 | 3184 | MARK = AvARRAY(av); |
a0d0e21e LW |
3185 | while (items--) { |
3186 | if (*MARK) | |
b479c9f2 | 3187 | { |
60779a30 | 3188 | if (SvPADTMP(*MARK)) { |
b479c9f2 | 3189 | *MARK = sv_mortalcopy(*MARK); |
60779a30 | 3190 | } |
a0d0e21e | 3191 | SvTEMP_off(*MARK); |
b479c9f2 | 3192 | } |
a0d0e21e LW |
3193 | MARK++; |
3194 | } | |
3195 | } | |
b479c9f2 | 3196 | SAVETMPS; |
f5719c02 DM |
3197 | if (UNLIKELY((cx->blk_u16 & OPpENTERSUB_LVAL_MASK) == OPpLVAL_INTRO && |
3198 | !CvLVALUE(cv))) | |
da1dff94 | 3199 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
4a925ff6 GS |
3200 | /* warning must come *after* we fully set up the context |
3201 | * stuff so that __WARN__ handlers can safely dounwind() | |
3202 | * if they want to | |
3203 | */ | |
3689ad62 | 3204 | if (UNLIKELY(depth == PERL_SUB_DEPTH_WARN |
f5719c02 DM |
3205 | && ckWARN(WARN_RECURSION) |
3206 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub)))) | |
4a925ff6 | 3207 | sub_crush_depth(cv); |
a0d0e21e LW |
3208 | RETURNOP(CvSTART(cv)); |
3209 | } | |
f1025168 | 3210 | else { |
de935cc9 | 3211 | SSize_t markix = TOPMARK; |
f1025168 | 3212 | |
b479c9f2 | 3213 | SAVETMPS; |
3a76ca88 | 3214 | PUTBACK; |
f1025168 | 3215 | |
f5719c02 | 3216 | if (UNLIKELY(((PL_op->op_private |
4587c532 FC |
3217 | & PUSHSUB_GET_LVALUE_MASK(Perl_is_lvalue_sub) |
3218 | ) & OPpENTERSUB_LVAL_MASK) == OPpLVAL_INTRO && | |
f5719c02 | 3219 | !CvLVALUE(cv))) |
4587c532 FC |
3220 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
3221 | ||
f5719c02 | 3222 | if (UNLIKELY(!hasargs && GvAV(PL_defgv))) { |
3a76ca88 RGS |
3223 | /* Need to copy @_ to stack. Alternative may be to |
3224 | * switch stack to @_, and copy return values | |
3225 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
3226 | AV * const av = GvAV(PL_defgv); | |
ad39f3a2 | 3227 | const SSize_t items = AvFILL(av) + 1; |
3a76ca88 RGS |
3228 | |
3229 | if (items) { | |
dd2a7f90 | 3230 | SSize_t i = 0; |
ad39f3a2 | 3231 | const bool m = cBOOL(SvRMAGICAL(av)); |
3a76ca88 RGS |
3232 | /* Mark is at the end of the stack. */ |
3233 | EXTEND(SP, items); | |
dd2a7f90 | 3234 | for (; i < items; ++i) |
ad39f3a2 FC |
3235 | { |
3236 | SV *sv; | |
3237 | if (m) { | |
3238 | SV ** const svp = av_fetch(av, i, 0); | |
3239 | sv = svp ? *svp : NULL; | |
3240 | } | |
3241 | else sv = AvARRAY(av)[i]; | |
3242 | if (sv) SP[i+1] = sv; | |
dd2a7f90 | 3243 | else { |
199f858d | 3244 | SP[i+1] = newSVavdefelem(av, i, 1); |
dd2a7f90 | 3245 | } |
ad39f3a2 | 3246 | } |
3a76ca88 RGS |
3247 | SP += items; |
3248 | PUTBACK ; | |
3249 | } | |
3250 | } | |
3455055f FC |
3251 | else { |
3252 | SV **mark = PL_stack_base + markix; | |
de935cc9 | 3253 | SSize_t items = SP - mark; |
3455055f FC |
3254 | while (items--) { |
3255 | mark++; | |
60779a30 | 3256 | if (*mark && SvPADTMP(*mark)) { |
3455055f | 3257 | *mark = sv_mortalcopy(*mark); |
60779a30 | 3258 | } |
3455055f FC |
3259 | } |
3260 | } | |
3a76ca88 | 3261 | /* We assume first XSUB in &DB::sub is the called one. */ |
f5719c02 | 3262 | if (UNLIKELY(PL_curcopdb)) { |
3a76ca88 RGS |
3263 | SAVEVPTR(PL_curcop); |
3264 | PL_curcop = PL_curcopdb; | |
3265 | PL_curcopdb = NULL; | |
3266 | } | |
3267 | /* Do we need to open block here? XXXX */ | |
72df79cf GF |
3268 | |
3269 | /* CvXSUB(cv) must not be NULL because newXS() refuses NULL xsub address */ | |
3270 | assert(CvXSUB(cv)); | |
16c91539 | 3271 | CvXSUB(cv)(aTHX_ cv); |
3a76ca88 RGS |
3272 | |
3273 | /* Enforce some sanity in scalar context. */ | |
89a18b40 DM |
3274 | if (gimme == G_SCALAR) { |
3275 | SV **svp = PL_stack_base + markix + 1; | |
3276 | if (svp != PL_stack_sp) { | |
3277 | *svp = svp > PL_stack_sp ? &PL_sv_undef : *PL_stack_sp; | |
3278 | PL_stack_sp = svp; | |
3279 | } | |
3a76ca88 | 3280 | } |
a57c6685 | 3281 | LEAVE; |
f1025168 NC |
3282 | return NORMAL; |
3283 | } | |
a0d0e21e LW |
3284 | } |
3285 | ||
44a8e56a | 3286 | void |
864dbfa3 | 3287 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 3288 | { |
7918f24d NC |
3289 | PERL_ARGS_ASSERT_SUB_CRUSH_DEPTH; |
3290 | ||
44a8e56a | 3291 | if (CvANON(cv)) |
9014280d | 3292 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 3293 | else { |
35c1215d | 3294 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
ecf05a58 | 3295 | SVfARG(cv_name(cv,NULL,0))); |
44a8e56a | 3296 | } |
3297 | } | |
3298 | ||
a0d0e21e LW |
3299 | PP(pp_aelem) |
3300 | { | |
20b7effb | 3301 | dSP; |
a0d0e21e | 3302 | SV** svp; |
a3b680e6 | 3303 | SV* const elemsv = POPs; |
d804643f | 3304 | IV elem = SvIV(elemsv); |
502c6561 | 3305 | AV *const av = MUTABLE_AV(POPs); |
e1ec3a88 | 3306 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
bbfdc870 | 3307 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; |
4ad10a0b VP |
3308 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
3309 | bool preeminent = TRUE; | |
be6c24e0 | 3310 | SV *sv; |
a0d0e21e | 3311 | |
5d9574c1 | 3312 | if (UNLIKELY(SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC))) |
95b63a38 JH |
3313 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
3314 | "Use of reference \"%"SVf"\" as array index", | |
be2597df | 3315 | SVfARG(elemsv)); |
5d9574c1 | 3316 | if (UNLIKELY(SvTYPE(av) != SVt_PVAV)) |
a0d0e21e | 3317 | RETPUSHUNDEF; |
4ad10a0b | 3318 | |
5d9574c1 | 3319 | if (UNLIKELY(localizing)) { |
4ad10a0b VP |
3320 | MAGIC *mg; |
3321 | HV *stash; | |
3322 | ||
3323 | /* If we can determine whether the element exist, | |
3324 | * Try to preserve the existenceness of a tied array | |
3325 | * element by using EXISTS and DELETE if possible. | |
3326 | * Fallback to FETCH and STORE otherwise. */ | |
3327 | if (SvCANEXISTDELETE(av)) | |
3328 | preeminent = av_exists(av, elem); | |
3329 | } | |
3330 | ||
68dc0745 | 3331 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 3332 | if (lval) { |
2b573ace | 3333 | #ifdef PERL_MALLOC_WRAP |
2b573ace | 3334 | if (SvUOK(elemsv)) { |
a9c4fd4e | 3335 | const UV uv = SvUV(elemsv); |
2b573ace JH |
3336 | elem = uv > IV_MAX ? IV_MAX : uv; |
3337 | } | |
3338 | else if (SvNOK(elemsv)) | |
3339 | elem = (IV)SvNV(elemsv); | |
a3b680e6 AL |
3340 | if (elem > 0) { |
3341 | static const char oom_array_extend[] = | |
3342 | "Out of memory during array extend"; /* Duplicated in av.c */ | |
2b573ace | 3343 | MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend); |
a3b680e6 | 3344 | } |
2b573ace | 3345 | #endif |
ce0d59fd | 3346 | if (!svp || !*svp) { |
bbfdc870 | 3347 | IV len; |
68dc0745 | 3348 | if (!defer) |
cea2e8a9 | 3349 | DIE(aTHX_ PL_no_aelem, elem); |
b9f2b683 | 3350 | len = av_tindex(av); |
199f858d | 3351 | mPUSHs(newSVavdefelem(av, |
bbfdc870 FC |
3352 | /* Resolve a negative index now, unless it points before the |
3353 | beginning of the array, in which case record it for error | |
3354 | reporting in magic_setdefelem. */ | |
199f858d FC |
3355 | elem < 0 && len + elem >= 0 ? len + elem : elem, |
3356 | 1)); | |
68dc0745 | 3357 | RETURN; |
3358 | } | |
5d9574c1 | 3359 | if (UNLIKELY(localizing)) { |
4ad10a0b VP |
3360 | if (preeminent) |
3361 | save_aelem(av, elem, svp); | |
3362 | else | |
3363 | SAVEADELETE(av, elem); | |
3364 | } | |
9026059d GG |
3365 | else if (PL_op->op_private & OPpDEREF) { |
3366 | PUSHs(vivify_ref(*svp, PL_op->op_private & OPpDEREF)); | |
3367 | RETURN; | |
3368 | } | |
a0d0e21e | 3369 | } |
3280af22 | 3370 | sv = (svp ? *svp : &PL_sv_undef); |
39cf747a | 3371 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 3372 | mg_get(sv); |
be6c24e0 | 3373 | PUSHs(sv); |
a0d0e21e LW |
3374 | RETURN; |
3375 | } | |
3376 | ||
9026059d | 3377 | SV* |
864dbfa3 | 3378 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 | 3379 | { |
7918f24d NC |
3380 | PERL_ARGS_ASSERT_VIVIFY_REF; |
3381 | ||
5b295bef | 3382 | SvGETMAGIC(sv); |
02a9e968 CS |
3383 | if (!SvOK(sv)) { |
3384 | if (SvREADONLY(sv)) | |
cb077ed2 | 3385 | Perl_croak_no_modify(); |
43230e26 | 3386 | prepare_SV_for_RV(sv); |
68dc0745 | 3387 | switch (to_what) { |
5f05dabc | 3388 | case OPpDEREF_SV: |
561b68a9 | 3389 | SvRV_set(sv, newSV(0)); |
5f05dabc | 3390 | break; |
3391 | case OPpDEREF_AV: | |
ad64d0ec | 3392 | SvRV_set(sv, MUTABLE_SV(newAV())); |
5f05dabc | 3393 | break; |
3394 | case OPpDEREF_HV: | |
ad64d0ec | 3395 | SvRV_set(sv, MUTABLE_SV(newHV())); |
5f05dabc | 3396 | break; |
3397 | } | |
02a9e968 CS |
3398 | SvROK_on(sv); |
3399 | SvSETMAGIC(sv); | |
7e482323 | 3400 | SvGETMAGIC(sv); |
02a9e968 | 3401 | } |
9026059d GG |
3402 | if (SvGMAGICAL(sv)) { |
3403 | /* copy the sv without magic to prevent magic from being | |
3404 | executed twice */ | |
3405 | SV* msv = sv_newmortal(); | |
3406 | sv_setsv_nomg(msv, sv); | |
3407 | return msv; | |
3408 | } | |
3409 | return sv; | |
02a9e968 CS |
3410 | } |
3411 | ||
7d6c333c | 3412 | PERL_STATIC_INLINE HV * |
3413 | S_opmethod_stash(pTHX_ SV* meth) | |
f5d5a27c | 3414 | { |
a0d0e21e | 3415 | SV* ob; |
56304f61 | 3416 | HV* stash; |
b55b14d0 | 3417 | |
d648ffcb | 3418 | SV* const sv = PL_stack_base + TOPMARK == PL_stack_sp |
f226e9be FC |
3419 | ? (Perl_croak(aTHX_ "Can't call method \"%"SVf"\" without a " |
3420 | "package or object reference", SVfARG(meth)), | |
3421 | (SV *)NULL) | |
3422 | : *(PL_stack_base + TOPMARK + 1); | |
f5d5a27c | 3423 | |
7d6c333c | 3424 | PERL_ARGS_ASSERT_OPMETHOD_STASH; |
d648ffcb | 3425 | |
5d9574c1 | 3426 | if (UNLIKELY(!sv)) |
7156e69a | 3427 | undefined: |
a214957f VP |
3428 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" on an undefined value", |
3429 | SVfARG(meth)); | |
4f1b7578 | 3430 | |
d648ffcb | 3431 | if (UNLIKELY(SvGMAGICAL(sv))) mg_get(sv); |
3432 | else if (SvIsCOW_shared_hash(sv)) { /* MyClass->meth() */ | |
3433 | stash = gv_stashsv(sv, GV_CACHE_ONLY); | |
7d6c333c | 3434 | if (stash) return stash; |
d648ffcb | 3435 | } |
3436 | ||
a0d0e21e | 3437 | if (SvROK(sv)) |
ad64d0ec | 3438 | ob = MUTABLE_SV(SvRV(sv)); |
7156e69a | 3439 | else if (!SvOK(sv)) goto undefined; |
a77c16f7 FC |
3440 | else if (isGV_with_GP(sv)) { |
3441 | if (!GvIO(sv)) | |
3442 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" " | |
3443 | "without a package or object reference", | |
3444 | SVfARG(meth)); | |
3445 | ob = sv; | |
3446 | if (SvTYPE(ob) == SVt_PVLV && LvTYPE(ob) == 'y') { | |
3447 | assert(!LvTARGLEN(ob)); | |
3448 | ob = LvTARG(ob); | |
3449 | assert(ob); | |
3450 | } | |
3451 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV(ob)); | |
3452 | } | |
a0d0e21e | 3453 | else { |
89269094 | 3454 | /* this isn't a reference */ |
a0d0e21e | 3455 | GV* iogv; |
f937af42 | 3456 | STRLEN packlen; |
89269094 | 3457 | const char * const packname = SvPV_nomg_const(sv, packlen); |
d283e876 | 3458 | const U32 packname_utf8 = SvUTF8(sv); |
3459 | stash = gv_stashpvn(packname, packlen, packname_utf8 | GV_CACHE_ONLY); | |
7d6c333c | 3460 | if (stash) return stash; |
081fc587 | 3461 | |
89269094 | 3462 | if (!(iogv = gv_fetchpvn_flags( |
d283e876 | 3463 | packname, packlen, packname_utf8, SVt_PVIO |
da6b625f | 3464 | )) || |
ad64d0ec | 3465 | !(ob=MUTABLE_SV(GvIO(iogv)))) |
a0d0e21e | 3466 | { |
af09ea45 | 3467 | /* this isn't the name of a filehandle either */ |
89269094 | 3468 | if (!packlen) |
834a4ddd | 3469 | { |
7156e69a FC |
3470 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" " |
3471 | "without a package or object reference", | |
3472 | SVfARG(meth)); | |
834a4ddd | 3473 | } |
af09ea45 | 3474 | /* assume it's a package name */ |
d283e876 | 3475 | stash = gv_stashpvn(packname, packlen, packname_utf8); |
7d6c333c | 3476 | if (stash) return stash; |
3477 | else return MUTABLE_HV(sv); | |
a0d0e21e | 3478 | } |
af09ea45 | 3479 | /* it _is_ a filehandle name -- replace with a reference */ |
ad64d0ec | 3480 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV(MUTABLE_SV(iogv))); |
a0d0e21e LW |
3481 | } |
3482 | ||
1f3ffe4c | 3483 | /* if we got here, ob should be an object or a glob */ |
f0d43078 | 3484 | if (!ob || !(SvOBJECT(ob) |
a77c16f7 | 3485 | || (isGV_with_GP(ob) |
159b6efe | 3486 | && (ob = MUTABLE_SV(GvIO((const GV *)ob))) |
f0d43078 GS |
3487 | && SvOBJECT(ob)))) |
3488 | { | |
b375e37b BF |
3489 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" on unblessed reference", |
3490 | SVfARG((SvSCREAM(meth) && strEQ(SvPV_nolen_const(meth),"isa")) | |
3491 | ? newSVpvs_flags("DOES", SVs_TEMP) | |
3492 | : meth)); | |
f0d43078 | 3493 | } |
a0d0e21e | 3494 | |
7d6c333c | 3495 | return SvSTASH(ob); |
3496 | } | |
3497 | ||
3498 | PP(pp_method) | |
3499 | { | |
3500 | dSP; | |
3501 | GV* gv; | |
3502 | HV* stash; | |
3503 | SV* const meth = TOPs; | |
3504 | ||
3505 | if (SvROK(meth)) { | |
3506 | SV* const rmeth = SvRV(meth); | |
3507 | if (SvTYPE(rmeth) == SVt_PVCV) { | |
3508 | SETs(rmeth); | |
3509 | RETURN; | |
3510 | } | |
3511 | } | |
a0d0e21e | 3512 | |
7d6c333c | 3513 | stash = opmethod_stash(meth); |
af09ea45 | 3514 | |
7d6c333c | 3515 | gv = gv_fetchmethod_sv_flags(stash, meth, GV_AUTOLOAD|GV_CROAK); |
3516 | assert(gv); | |
3517 | ||
3518 | SETs(isGV(gv) ? MUTABLE_SV(GvCV(gv)) : MUTABLE_SV(gv)); | |
3519 | RETURN; | |
3520 | } | |
3521 | ||
810bd8b7 | 3522 | #define METHOD_CHECK_CACHE(stash,cache,meth) \ |
3523 | const HE* const he = hv_fetch_ent(cache, meth, 0, 0); \ | |
3524 | if (he) { \ | |
3525 | gv = MUTABLE_GV(HeVAL(he)); \ | |
3526 | if (isGV(gv) && GvCV(gv) && (!GvCVGEN(gv) || GvCVGEN(gv) \ | |
3527 | == (PL_sub_generation + HvMROMETA(stash)->cache_gen))) \ | |
3528 | { \ | |
3529 | XPUSHs(MUTABLE_SV(GvCV(gv))); \ | |
3530 | RETURN; \ | |
3531 | } \ | |
3532 | } \ | |
3533 | ||
7d6c333c | 3534 | PP(pp_method_named) |
3535 | { | |
3536 | dSP; | |
3537 | GV* gv; | |
3538 | SV* const meth = cMETHOPx_meth(PL_op); | |
3539 | HV* const stash = opmethod_stash(meth); | |
3540 | ||
3541 | if (LIKELY(SvTYPE(stash) == SVt_PVHV)) { | |
810bd8b7 | 3542 | METHOD_CHECK_CACHE(stash, stash, meth); |
f5d5a27c CS |
3543 | } |
3544 | ||
7d6c333c | 3545 | gv = gv_fetchmethod_sv_flags(stash, meth, GV_AUTOLOAD|GV_CROAK); |
256d1bb2 | 3546 | assert(gv); |
9b9d0b15 | 3547 | |
7d6c333c | 3548 | XPUSHs(isGV(gv) ? MUTABLE_SV(GvCV(gv)) : MUTABLE_SV(gv)); |
3549 | RETURN; | |
3550 | } | |
3551 | ||
3552 | PP(pp_method_super) | |
3553 | { | |
3554 | dSP; | |
3555 | GV* gv; | |
3556 | HV* cache; | |
3557 | SV* const meth = cMETHOPx_meth(PL_op); | |
3558 | HV* const stash = CopSTASH(PL_curcop); | |
3559 | /* Actually, SUPER doesn't need real object's (or class') stash at all, | |
3560 | * as it uses CopSTASH. However, we must ensure that object(class) is | |
3561 | * correct (this check is done by S_opmethod_stash) */ | |
3562 | opmethod_stash(meth); | |
3563 | ||
3564 | if ((cache = HvMROMETA(stash)->super)) { | |
810bd8b7 | 3565 | METHOD_CHECK_CACHE(stash, cache, meth); |
3566 | } | |
3567 | ||
3568 | gv = gv_fetchmethod_sv_flags(stash, meth, GV_AUTOLOAD|GV_CROAK|GV_SUPER); | |
3569 | assert(gv); | |
3570 | ||
3571 | XPUSHs(isGV(gv) ? MUTABLE_SV(GvCV(gv)) : MUTABLE_SV(gv)); | |
3572 | RETURN; | |
3573 | } | |
3574 | ||
3575 | PP(pp_method_redir) | |
3576 | { | |
3577 | dSP; | |
3578 | GV* gv; | |
3579 | SV* const meth = cMETHOPx_meth(PL_op); | |
3580 | HV* stash = gv_stashsv(cMETHOPx_rclass(PL_op), 0); | |
3581 | opmethod_stash(meth); /* not used but needed for error checks */ | |
3582 | ||
3583 | if (stash) { METHOD_CHECK_CACHE(stash, stash, meth); } | |
3584 | else stash = MUTABLE_HV(cMETHOPx_rclass(PL_op)); | |
3585 | ||
3586 | gv = gv_fetchmethod_sv_flags(stash, meth, GV_AUTOLOAD|GV_CROAK); | |
3587 | assert(gv); | |
3588 | ||
3589 | XPUSHs(isGV(gv) ? MUTABLE_SV(GvCV(gv)) : MUTABLE_SV(gv)); | |
3590 | RETURN; | |
3591 | } | |
3592 | ||
3593 | PP(pp_method_redir_super) | |
3594 | { | |
3595 | dSP; | |
3596 | GV* gv; | |
3597 | HV* cache; | |
3598 | SV* const meth = cMETHOPx_meth(PL_op); | |
3599 | HV* stash = gv_stashsv(cMETHOPx_rclass(PL_op), 0); | |
3600 | opmethod_stash(meth); /* not used but needed for error checks */ | |
3601 | ||
3602 | if (UNLIKELY(!stash)) stash = MUTABLE_HV(cMETHOPx_rclass(PL_op)); | |
3603 | else if ((cache = HvMROMETA(stash)->super)) { | |
3604 | METHOD_CHECK_CACHE(stash, cache, meth); | |
7d6c333c | 3605 | } |
3606 | ||
3607 | gv = gv_fetchmethod_sv_flags(stash, meth, GV_AUTOLOAD|GV_CROAK|GV_SUPER); | |
3608 | assert(gv); | |
3609 | ||
3610 | XPUSHs(isGV(gv) ? MUTABLE_SV(GvCV(gv)) : MUTABLE_SV(gv)); | |
3611 | RETURN; | |
a0d0e21e | 3612 | } |
241d1a3b NC |
3613 | |
3614 | /* | |
3615 | * Local variables: | |
3616 | * c-indentation-style: bsd | |
3617 | * c-basic-offset: 4 | |
14d04a33 | 3618 | * indent-tabs-mode: nil |
241d1a3b NC |
3619 | * End: |
3620 | * | |
14d04a33 | 3621 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3622 | */ |