Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
a0d0e21e LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
9 | */ | |
10 | ||
11 | /* | |
12 | * Then he heard Merry change the note, and up went the Horn-cry of Buckland, | |
13 | * shaking the air. | |
14 | * | |
4ac71550 TC |
15 | * Awake! Awake! Fear, Fire, Foes! Awake! |
16 | * Fire, Foes! Awake! | |
17 | * | |
18 | * [p.1007 of _The Lord of the Rings_, VI/viii: "The Scouring of the Shire"] | |
a0d0e21e LW |
19 | */ |
20 | ||
166f8a29 DM |
21 | /* This file contains 'hot' pp ("push/pop") functions that |
22 | * execute the opcodes that make up a perl program. A typical pp function | |
23 | * expects to find its arguments on the stack, and usually pushes its | |
24 | * results onto the stack, hence the 'pp' terminology. Each OP structure | |
25 | * contains a pointer to the relevant pp_foo() function. | |
26 | * | |
27 | * By 'hot', we mean common ops whose execution speed is critical. | |
28 | * By gathering them together into a single file, we encourage | |
29 | * CPU cache hits on hot code. Also it could be taken as a warning not to | |
30 | * change any code in this file unless you're sure it won't affect | |
31 | * performance. | |
32 | */ | |
33 | ||
a0d0e21e | 34 | #include "EXTERN.h" |
864dbfa3 | 35 | #define PERL_IN_PP_HOT_C |
a0d0e21e LW |
36 | #include "perl.h" |
37 | ||
38 | /* Hot code. */ | |
39 | ||
40 | PP(pp_const) | |
41 | { | |
97aff369 | 42 | dVAR; |
39644a26 | 43 | dSP; |
996c9baa | 44 | XPUSHs(cSVOP_sv); |
a0d0e21e LW |
45 | RETURN; |
46 | } | |
47 | ||
48 | PP(pp_nextstate) | |
49 | { | |
97aff369 | 50 | dVAR; |
533c011a | 51 | PL_curcop = (COP*)PL_op; |
a0d0e21e | 52 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 53 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 54 | FREETMPS; |
f410a211 | 55 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
56 | return NORMAL; |
57 | } | |
58 | ||
59 | PP(pp_gvsv) | |
60 | { | |
97aff369 | 61 | dVAR; |
39644a26 | 62 | dSP; |
924508f0 | 63 | EXTEND(SP,1); |
533c011a | 64 | if (PL_op->op_private & OPpLVAL_INTRO) |
1d7c1841 | 65 | PUSHs(save_scalar(cGVOP_gv)); |
a0d0e21e | 66 | else |
c69033f2 | 67 | PUSHs(GvSVn(cGVOP_gv)); |
a0d0e21e LW |
68 | RETURN; |
69 | } | |
70 | ||
71 | PP(pp_null) | |
72 | { | |
97aff369 | 73 | dVAR; |
a0d0e21e LW |
74 | return NORMAL; |
75 | } | |
76 | ||
bf0571fd | 77 | /* This is sometimes called directly by pp_coreargs. */ |
a0d0e21e LW |
78 | PP(pp_pushmark) |
79 | { | |
97aff369 | 80 | dVAR; |
3280af22 | 81 | PUSHMARK(PL_stack_sp); |
a0d0e21e LW |
82 | return NORMAL; |
83 | } | |
84 | ||
85 | PP(pp_stringify) | |
86 | { | |
97aff369 | 87 | dVAR; dSP; dTARGET; |
6050d10e | 88 | sv_copypv(TARG,TOPs); |
a0d0e21e LW |
89 | SETTARG; |
90 | RETURN; | |
91 | } | |
92 | ||
93 | PP(pp_gv) | |
94 | { | |
97aff369 | 95 | dVAR; dSP; |
ad64d0ec | 96 | XPUSHs(MUTABLE_SV(cGVOP_gv)); |
a0d0e21e LW |
97 | RETURN; |
98 | } | |
99 | ||
100 | PP(pp_and) | |
101 | { | |
97aff369 | 102 | dVAR; dSP; |
f410a211 | 103 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
104 | if (!SvTRUE(TOPs)) |
105 | RETURN; | |
106 | else { | |
c960fc3b SP |
107 | if (PL_op->op_type == OP_AND) |
108 | --SP; | |
a0d0e21e LW |
109 | RETURNOP(cLOGOP->op_other); |
110 | } | |
111 | } | |
112 | ||
113 | PP(pp_sassign) | |
114 | { | |
3e75a3c4 RU |
115 | dVAR; dSP; |
116 | /* sassign keeps its args in the optree traditionally backwards. | |
117 | So we pop them differently. | |
118 | */ | |
119 | SV *left = POPs; SV *right = TOPs; | |
748a9306 | 120 | |
533c011a | 121 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
0bd48802 AL |
122 | SV * const temp = left; |
123 | left = right; right = temp; | |
a0d0e21e | 124 | } |
3e75a3c4 | 125 | if (PL_tainting && PL_tainted && !SvTAINTED(right)) |
a0d0e21e | 126 | TAINT_NOT; |
e26df76a | 127 | if (PL_op->op_private & OPpASSIGN_CV_TO_GV) { |
3e75a3c4 | 128 | SV * const cv = SvRV(right); |
e26df76a | 129 | const U32 cv_type = SvTYPE(cv); |
3e75a3c4 | 130 | const bool is_gv = isGV_with_GP(left); |
6136c704 | 131 | const bool got_coderef = cv_type == SVt_PVCV || cv_type == SVt_PVFM; |
e26df76a NC |
132 | |
133 | if (!got_coderef) { | |
134 | assert(SvROK(cv)); | |
135 | } | |
136 | ||
3e75a3c4 RU |
137 | /* Can do the optimisation if left (LVALUE) is not a typeglob, |
138 | right (RVALUE) is a reference to something, and we're in void | |
e26df76a | 139 | context. */ |
13be902c | 140 | if (!got_coderef && !is_gv && GIMME_V == G_VOID) { |
e26df76a | 141 | /* Is the target symbol table currently empty? */ |
3e75a3c4 | 142 | GV * const gv = gv_fetchsv_nomg(left, GV_NOINIT, SVt_PVGV); |
bb112e5a | 143 | if (SvTYPE(gv) != SVt_PVGV && !SvOK(gv)) { |
e26df76a NC |
144 | /* Good. Create a new proxy constant subroutine in the target. |
145 | The gv becomes a(nother) reference to the constant. */ | |
146 | SV *const value = SvRV(cv); | |
147 | ||
ad64d0ec | 148 | SvUPGRADE(MUTABLE_SV(gv), SVt_IV); |
1ccdb730 | 149 | SvPCS_IMPORTED_on(gv); |
e26df76a | 150 | SvRV_set(gv, value); |
b37c2d43 | 151 | SvREFCNT_inc_simple_void(value); |
3e75a3c4 | 152 | SETs(left); |
e26df76a NC |
153 | RETURN; |
154 | } | |
155 | } | |
156 | ||
157 | /* Need to fix things up. */ | |
13be902c | 158 | if (!is_gv) { |
e26df76a | 159 | /* Need to fix GV. */ |
3e75a3c4 | 160 | left = MUTABLE_SV(gv_fetchsv_nomg(left,GV_ADD, SVt_PVGV)); |
e26df76a NC |
161 | } |
162 | ||
163 | if (!got_coderef) { | |
164 | /* We've been returned a constant rather than a full subroutine, | |
165 | but they expect a subroutine reference to apply. */ | |
53a42478 | 166 | if (SvROK(cv)) { |
d343c3ef | 167 | ENTER_with_name("sassign_coderef"); |
53a42478 NC |
168 | SvREFCNT_inc_void(SvRV(cv)); |
169 | /* newCONSTSUB takes a reference count on the passed in SV | |
170 | from us. We set the name to NULL, otherwise we get into | |
171 | all sorts of fun as the reference to our new sub is | |
172 | donated to the GV that we're about to assign to. | |
173 | */ | |
3e75a3c4 | 174 | SvRV_set(right, MUTABLE_SV(newCONSTSUB(GvSTASH(left), NULL, |
ad64d0ec | 175 | SvRV(cv)))); |
53a42478 | 176 | SvREFCNT_dec(cv); |
d343c3ef | 177 | LEAVE_with_name("sassign_coderef"); |
53a42478 NC |
178 | } else { |
179 | /* What can happen for the corner case *{"BONK"} = \&{"BONK"}; | |
180 | is that | |
181 | First: ops for \&{"BONK"}; return us the constant in the | |
182 | symbol table | |
183 | Second: ops for *{"BONK"} cause that symbol table entry | |
184 | (and our reference to it) to be upgraded from RV | |
185 | to typeblob) | |
186 | Thirdly: We get here. cv is actually PVGV now, and its | |
187 | GvCV() is actually the subroutine we're looking for | |
188 | ||
189 | So change the reference so that it points to the subroutine | |
190 | of that typeglob, as that's what they were after all along. | |
191 | */ | |
159b6efe | 192 | GV *const upgraded = MUTABLE_GV(cv); |
53a42478 NC |
193 | CV *const source = GvCV(upgraded); |
194 | ||
195 | assert(source); | |
196 | assert(CvFLAGS(source) & CVf_CONST); | |
197 | ||
198 | SvREFCNT_inc_void(source); | |
199 | SvREFCNT_dec(upgraded); | |
3e75a3c4 | 200 | SvRV_set(right, MUTABLE_SV(source)); |
53a42478 | 201 | } |
e26df76a | 202 | } |
53a42478 | 203 | |
e26df76a | 204 | } |
8fe85e3f | 205 | if ( |
3e75a3c4 RU |
206 | SvTEMP(left) && !SvSMAGICAL(left) && SvREFCNT(left) == 1 && |
207 | (!isGV_with_GP(left) || SvFAKE(left)) && ckWARN(WARN_MISC) | |
8fe85e3f FC |
208 | ) |
209 | Perl_warner(aTHX_ | |
210 | packWARN(WARN_MISC), "Useless assignment to a temporary" | |
211 | ); | |
3e75a3c4 RU |
212 | SvSetMagicSV(left, right); |
213 | SETs(left); | |
a0d0e21e LW |
214 | RETURN; |
215 | } | |
216 | ||
217 | PP(pp_cond_expr) | |
218 | { | |
97aff369 | 219 | dVAR; dSP; |
f410a211 | 220 | PERL_ASYNC_CHECK(); |
a0d0e21e | 221 | if (SvTRUEx(POPs)) |
1a67a97c | 222 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 223 | else |
1a67a97c | 224 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
225 | } |
226 | ||
227 | PP(pp_unstack) | |
228 | { | |
97aff369 | 229 | dVAR; |
8f3964af | 230 | PERL_ASYNC_CHECK(); |
a0d0e21e | 231 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 232 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 233 | FREETMPS; |
eae48c89 Z |
234 | if (!(PL_op->op_flags & OPf_SPECIAL)) { |
235 | I32 oldsave = PL_scopestack[PL_scopestack_ix - 1]; | |
236 | LEAVE_SCOPE(oldsave); | |
237 | } | |
a0d0e21e LW |
238 | return NORMAL; |
239 | } | |
240 | ||
a0d0e21e LW |
241 | PP(pp_concat) |
242 | { | |
6f1401dc | 243 | dVAR; dSP; dATARGET; tryAMAGICbin_MG(concat_amg, AMGf_assign); |
748a9306 LW |
244 | { |
245 | dPOPTOPssrl; | |
8d6d96c1 HS |
246 | bool lbyte; |
247 | STRLEN rlen; | |
d4c19fe8 | 248 | const char *rpv = NULL; |
a6b599c7 | 249 | bool rbyte = FALSE; |
a9c4fd4e | 250 | bool rcopied = FALSE; |
8d6d96c1 | 251 | |
6f1401dc DM |
252 | if (TARG == right && right != left) { /* $r = $l.$r */ |
253 | rpv = SvPV_nomg_const(right, rlen); | |
c75ab21a | 254 | rbyte = !DO_UTF8(right); |
59cd0e26 | 255 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
349d4f2f | 256 | rpv = SvPV_const(right, rlen); /* no point setting UTF-8 here */ |
db79b45b | 257 | rcopied = TRUE; |
8d6d96c1 | 258 | } |
7889fe52 | 259 | |
89734059 | 260 | if (TARG != left) { /* not $l .= $r */ |
a9c4fd4e | 261 | STRLEN llen; |
6f1401dc | 262 | const char* const lpv = SvPV_nomg_const(left, llen); |
90f5826e | 263 | lbyte = !DO_UTF8(left); |
8d6d96c1 HS |
264 | sv_setpvn(TARG, lpv, llen); |
265 | if (!lbyte) | |
266 | SvUTF8_on(TARG); | |
267 | else | |
268 | SvUTF8_off(TARG); | |
269 | } | |
89734059 | 270 | else { /* $l .= $r */ |
c75ab21a | 271 | if (!SvOK(TARG)) { |
89734059 | 272 | if (left == right && ckWARN(WARN_UNINITIALIZED)) /* $l .= $l */ |
c75ab21a | 273 | report_uninit(right); |
76f68e9b | 274 | sv_setpvs(left, ""); |
c75ab21a | 275 | } |
c5aa2872 DM |
276 | lbyte = (SvROK(left) && SvTYPE(SvRV(left)) == SVt_REGEXP) |
277 | ? !DO_UTF8(SvRV(left)) : !DO_UTF8(left); | |
90f5826e TS |
278 | if (IN_BYTES) |
279 | SvUTF8_off(TARG); | |
8d6d96c1 | 280 | } |
a12c0f56 | 281 | |
c75ab21a | 282 | if (!rcopied) { |
6f1401dc | 283 | if (left == right) |
89734059 | 284 | /* $r.$r: do magic twice: tied might return different 2nd time */ |
6f1401dc DM |
285 | SvGETMAGIC(right); |
286 | rpv = SvPV_nomg_const(right, rlen); | |
c75ab21a RH |
287 | rbyte = !DO_UTF8(right); |
288 | } | |
8d6d96c1 | 289 | if (lbyte != rbyte) { |
e3393f51 NT |
290 | /* sv_utf8_upgrade_nomg() may reallocate the stack */ |
291 | PUTBACK; | |
8d6d96c1 HS |
292 | if (lbyte) |
293 | sv_utf8_upgrade_nomg(TARG); | |
294 | else { | |
db79b45b | 295 | if (!rcopied) |
59cd0e26 | 296 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
8d6d96c1 | 297 | sv_utf8_upgrade_nomg(right); |
6f1401dc | 298 | rpv = SvPV_nomg_const(right, rlen); |
69b47968 | 299 | } |
e3393f51 | 300 | SPAGAIN; |
a0d0e21e | 301 | } |
8d6d96c1 | 302 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 303 | |
a0d0e21e LW |
304 | SETTARG; |
305 | RETURN; | |
748a9306 | 306 | } |
a0d0e21e LW |
307 | } |
308 | ||
309 | PP(pp_padsv) | |
310 | { | |
97aff369 | 311 | dVAR; dSP; dTARGET; |
a0d0e21e | 312 | XPUSHs(TARG); |
533c011a NIS |
313 | if (PL_op->op_flags & OPf_MOD) { |
314 | if (PL_op->op_private & OPpLVAL_INTRO) | |
952306ac RGS |
315 | if (!(PL_op->op_private & OPpPAD_STATE)) |
316 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); | |
a62b51b8 | 317 | if (PL_op->op_private & OPpDEREF) { |
8ec5e241 | 318 | PUTBACK; |
9026059d | 319 | TOPs = vivify_ref(TOPs, PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
320 | SPAGAIN; |
321 | } | |
4633a7c4 | 322 | } |
a0d0e21e LW |
323 | RETURN; |
324 | } | |
325 | ||
326 | PP(pp_readline) | |
327 | { | |
97aff369 | 328 | dVAR; |
30901a8a FC |
329 | dSP; |
330 | if (TOPs) { | |
331 | SvGETMAGIC(TOPs); | |
332 | tryAMAGICunTARGET(iter_amg, 0, 0); | |
333 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); | |
334 | } | |
335 | else PL_last_in_gv = PL_argvgv, PL_stack_sp--; | |
6e592b3a BM |
336 | if (!isGV_with_GP(PL_last_in_gv)) { |
337 | if (SvROK(PL_last_in_gv) && isGV_with_GP(SvRV(PL_last_in_gv))) | |
159b6efe | 338 | PL_last_in_gv = MUTABLE_GV(SvRV(PL_last_in_gv)); |
8efb3254 | 339 | else { |
f5284f61 | 340 | dSP; |
ad64d0ec | 341 | XPUSHs(MUTABLE_SV(PL_last_in_gv)); |
f5284f61 | 342 | PUTBACK; |
897d3989 | 343 | Perl_pp_rv2gv(aTHX); |
159b6efe | 344 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
f5284f61 IZ |
345 | } |
346 | } | |
a0d0e21e LW |
347 | return do_readline(); |
348 | } | |
349 | ||
350 | PP(pp_eq) | |
351 | { | |
6f1401dc | 352 | dVAR; dSP; |
33efebe6 DM |
353 | SV *left, *right; |
354 | ||
a42d0242 | 355 | tryAMAGICbin_MG(eq_amg, AMGf_set|AMGf_numeric); |
33efebe6 DM |
356 | right = POPs; |
357 | left = TOPs; | |
358 | SETs(boolSV( | |
359 | (SvIOK_notUV(left) && SvIOK_notUV(right)) | |
360 | ? (SvIVX(left) == SvIVX(right)) | |
361 | : ( do_ncmp(left, right) == 0) | |
362 | )); | |
363 | RETURN; | |
a0d0e21e LW |
364 | } |
365 | ||
366 | PP(pp_preinc) | |
367 | { | |
97aff369 | 368 | dVAR; dSP; |
17058fe0 FC |
369 | const bool inc = |
370 | PL_op->op_type == OP_PREINC || PL_op->op_type == OP_I_PREINC; | |
60092ce4 | 371 | if (SvTYPE(TOPs) >= SVt_PVAV || (isGV_with_GP(TOPs) && !SvFAKE(TOPs))) |
6ad8f254 | 372 | Perl_croak_no_modify(aTHX); |
3510b4a1 | 373 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
17058fe0 | 374 | && SvIVX(TOPs) != (inc ? IV_MAX : IV_MIN)) |
55497cff | 375 | { |
17058fe0 | 376 | SvIV_set(TOPs, SvIVX(TOPs) + (inc ? 1 : -1)); |
55497cff | 377 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 378 | } |
28e5dec8 | 379 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
17058fe0 FC |
380 | if (inc) sv_inc(TOPs); |
381 | else sv_dec(TOPs); | |
a0d0e21e LW |
382 | SvSETMAGIC(TOPs); |
383 | return NORMAL; | |
384 | } | |
385 | ||
386 | PP(pp_or) | |
387 | { | |
97aff369 | 388 | dVAR; dSP; |
f410a211 | 389 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
390 | if (SvTRUE(TOPs)) |
391 | RETURN; | |
392 | else { | |
c960fc3b SP |
393 | if (PL_op->op_type == OP_OR) |
394 | --SP; | |
a0d0e21e LW |
395 | RETURNOP(cLOGOP->op_other); |
396 | } | |
397 | } | |
398 | ||
25a55bd7 | 399 | PP(pp_defined) |
c963b151 | 400 | { |
97aff369 | 401 | dVAR; dSP; |
6136c704 AL |
402 | register SV* sv; |
403 | bool defined; | |
25a55bd7 | 404 | const int op_type = PL_op->op_type; |
ea5195b7 | 405 | const bool is_dor = (op_type == OP_DOR || op_type == OP_DORASSIGN); |
c963b151 | 406 | |
6136c704 | 407 | if (is_dor) { |
f410a211 | 408 | PERL_ASYNC_CHECK(); |
25a55bd7 SP |
409 | sv = TOPs; |
410 | if (!sv || !SvANY(sv)) { | |
2bd49cfc NC |
411 | if (op_type == OP_DOR) |
412 | --SP; | |
25a55bd7 SP |
413 | RETURNOP(cLOGOP->op_other); |
414 | } | |
b7c44293 RGS |
415 | } |
416 | else { | |
417 | /* OP_DEFINED */ | |
25a55bd7 SP |
418 | sv = POPs; |
419 | if (!sv || !SvANY(sv)) | |
420 | RETPUSHNO; | |
b7c44293 | 421 | } |
25a55bd7 | 422 | |
6136c704 | 423 | defined = FALSE; |
c963b151 BD |
424 | switch (SvTYPE(sv)) { |
425 | case SVt_PVAV: | |
426 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 427 | defined = TRUE; |
c963b151 BD |
428 | break; |
429 | case SVt_PVHV: | |
430 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 431 | defined = TRUE; |
c963b151 BD |
432 | break; |
433 | case SVt_PVCV: | |
434 | if (CvROOT(sv) || CvXSUB(sv)) | |
25a55bd7 | 435 | defined = TRUE; |
c963b151 BD |
436 | break; |
437 | default: | |
5b295bef | 438 | SvGETMAGIC(sv); |
c963b151 | 439 | if (SvOK(sv)) |
25a55bd7 | 440 | defined = TRUE; |
6136c704 | 441 | break; |
c963b151 | 442 | } |
6136c704 AL |
443 | |
444 | if (is_dor) { | |
c960fc3b SP |
445 | if(defined) |
446 | RETURN; | |
447 | if(op_type == OP_DOR) | |
448 | --SP; | |
25a55bd7 | 449 | RETURNOP(cLOGOP->op_other); |
25a55bd7 | 450 | } |
d9aa96a4 SP |
451 | /* assuming OP_DEFINED */ |
452 | if(defined) | |
453 | RETPUSHYES; | |
454 | RETPUSHNO; | |
c963b151 BD |
455 | } |
456 | ||
a0d0e21e LW |
457 | PP(pp_add) |
458 | { | |
800401ee | 459 | dVAR; dSP; dATARGET; bool useleft; SV *svl, *svr; |
6f1401dc DM |
460 | tryAMAGICbin_MG(add_amg, AMGf_assign|AMGf_numeric); |
461 | svr = TOPs; | |
462 | svl = TOPm1s; | |
463 | ||
800401ee | 464 | useleft = USE_LEFT(svl); |
28e5dec8 JH |
465 | #ifdef PERL_PRESERVE_IVUV |
466 | /* We must see if we can perform the addition with integers if possible, | |
467 | as the integer code detects overflow while the NV code doesn't. | |
468 | If either argument hasn't had a numeric conversion yet attempt to get | |
469 | the IV. It's important to do this now, rather than just assuming that | |
470 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
471 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
472 | integer in case the second argument is IV=9223372036854775806 | |
473 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
474 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
475 | ||
476 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
477 | fp maths for integer values. |
478 | ||
a00b5bd3 | 479 | How to detect overflow? |
7dca457a NC |
480 | |
481 | C 99 section 6.2.6.1 says | |
482 | ||
483 | The range of nonnegative values of a signed integer type is a subrange | |
484 | of the corresponding unsigned integer type, and the representation of | |
485 | the same value in each type is the same. A computation involving | |
486 | unsigned operands can never overflow, because a result that cannot be | |
487 | represented by the resulting unsigned integer type is reduced modulo | |
488 | the number that is one greater than the largest value that can be | |
489 | represented by the resulting type. | |
490 | ||
491 | (the 9th paragraph) | |
492 | ||
493 | which I read as "unsigned ints wrap." | |
494 | ||
495 | signed integer overflow seems to be classed as "exception condition" | |
496 | ||
497 | If an exceptional condition occurs during the evaluation of an | |
498 | expression (that is, if the result is not mathematically defined or not | |
499 | in the range of representable values for its type), the behavior is | |
500 | undefined. | |
501 | ||
502 | (6.5, the 5th paragraph) | |
503 | ||
504 | I had assumed that on 2s complement machines signed arithmetic would | |
505 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
506 | everything perl builds on would be happy. After much wailing and | |
507 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
508 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
509 | unsigned code below is actually shorter than the old code. :-) | |
510 | */ | |
511 | ||
01f91bf2 | 512 | if (SvIV_please_nomg(svr)) { |
28e5dec8 JH |
513 | /* Unless the left argument is integer in range we are going to have to |
514 | use NV maths. Hence only attempt to coerce the right argument if | |
515 | we know the left is integer. */ | |
9c5ffd7c JH |
516 | register UV auv = 0; |
517 | bool auvok = FALSE; | |
7dca457a NC |
518 | bool a_valid = 0; |
519 | ||
28e5dec8 | 520 | if (!useleft) { |
7dca457a NC |
521 | auv = 0; |
522 | a_valid = auvok = 1; | |
523 | /* left operand is undef, treat as zero. + 0 is identity, | |
524 | Could SETi or SETu right now, but space optimise by not adding | |
525 | lots of code to speed up what is probably a rarish case. */ | |
526 | } else { | |
527 | /* Left operand is defined, so is it IV? */ | |
01f91bf2 | 528 | if (SvIV_please_nomg(svl)) { |
800401ee JH |
529 | if ((auvok = SvUOK(svl))) |
530 | auv = SvUVX(svl); | |
7dca457a | 531 | else { |
800401ee | 532 | register const IV aiv = SvIVX(svl); |
7dca457a NC |
533 | if (aiv >= 0) { |
534 | auv = aiv; | |
535 | auvok = 1; /* Now acting as a sign flag. */ | |
536 | } else { /* 2s complement assumption for IV_MIN */ | |
537 | auv = (UV)-aiv; | |
538 | } | |
539 | } | |
540 | a_valid = 1; | |
28e5dec8 JH |
541 | } |
542 | } | |
7dca457a NC |
543 | if (a_valid) { |
544 | bool result_good = 0; | |
545 | UV result; | |
546 | register UV buv; | |
800401ee | 547 | bool buvok = SvUOK(svr); |
a00b5bd3 | 548 | |
7dca457a | 549 | if (buvok) |
800401ee | 550 | buv = SvUVX(svr); |
7dca457a | 551 | else { |
800401ee | 552 | register const IV biv = SvIVX(svr); |
7dca457a NC |
553 | if (biv >= 0) { |
554 | buv = biv; | |
555 | buvok = 1; | |
556 | } else | |
557 | buv = (UV)-biv; | |
558 | } | |
559 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 560 | else "IV" now, independent of how it came in. |
7dca457a NC |
561 | if a, b represents positive, A, B negative, a maps to -A etc |
562 | a + b => (a + b) | |
563 | A + b => -(a - b) | |
564 | a + B => (a - b) | |
565 | A + B => -(a + b) | |
566 | all UV maths. negate result if A negative. | |
567 | add if signs same, subtract if signs differ. */ | |
568 | ||
569 | if (auvok ^ buvok) { | |
570 | /* Signs differ. */ | |
571 | if (auv >= buv) { | |
572 | result = auv - buv; | |
573 | /* Must get smaller */ | |
574 | if (result <= auv) | |
575 | result_good = 1; | |
576 | } else { | |
577 | result = buv - auv; | |
578 | if (result <= buv) { | |
579 | /* result really should be -(auv-buv). as its negation | |
580 | of true value, need to swap our result flag */ | |
581 | auvok = !auvok; | |
582 | result_good = 1; | |
28e5dec8 JH |
583 | } |
584 | } | |
7dca457a NC |
585 | } else { |
586 | /* Signs same */ | |
587 | result = auv + buv; | |
588 | if (result >= auv) | |
589 | result_good = 1; | |
590 | } | |
591 | if (result_good) { | |
592 | SP--; | |
593 | if (auvok) | |
28e5dec8 | 594 | SETu( result ); |
7dca457a NC |
595 | else { |
596 | /* Negate result */ | |
597 | if (result <= (UV)IV_MIN) | |
598 | SETi( -(IV)result ); | |
599 | else { | |
600 | /* result valid, but out of range for IV. */ | |
601 | SETn( -(NV)result ); | |
28e5dec8 JH |
602 | } |
603 | } | |
7dca457a NC |
604 | RETURN; |
605 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
606 | } |
607 | } | |
608 | #endif | |
a0d0e21e | 609 | { |
6f1401dc | 610 | NV value = SvNV_nomg(svr); |
4efa5a16 | 611 | (void)POPs; |
28e5dec8 JH |
612 | if (!useleft) { |
613 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
614 | SETn(value); | |
615 | RETURN; | |
616 | } | |
6f1401dc | 617 | SETn( value + SvNV_nomg(svl) ); |
28e5dec8 | 618 | RETURN; |
a0d0e21e LW |
619 | } |
620 | } | |
621 | ||
622 | PP(pp_aelemfast) | |
623 | { | |
97aff369 | 624 | dVAR; dSP; |
93bad3fd | 625 | AV * const av = PL_op->op_type == OP_AELEMFAST_LEX |
8f878375 | 626 | ? MUTABLE_AV(PAD_SV(PL_op->op_targ)) : GvAVn(cGVOP_gv); |
a3b680e6 | 627 | const U32 lval = PL_op->op_flags & OPf_MOD; |
0bd48802 | 628 | SV** const svp = av_fetch(av, PL_op->op_private, lval); |
3280af22 | 629 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 630 | EXTEND(SP, 1); |
39cf747a | 631 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 632 | mg_get(sv); |
be6c24e0 | 633 | PUSHs(sv); |
a0d0e21e LW |
634 | RETURN; |
635 | } | |
636 | ||
637 | PP(pp_join) | |
638 | { | |
97aff369 | 639 | dVAR; dSP; dMARK; dTARGET; |
a0d0e21e LW |
640 | MARK++; |
641 | do_join(TARG, *MARK, MARK, SP); | |
642 | SP = MARK; | |
643 | SETs(TARG); | |
644 | RETURN; | |
645 | } | |
646 | ||
647 | PP(pp_pushre) | |
648 | { | |
97aff369 | 649 | dVAR; dSP; |
44a8e56a | 650 | #ifdef DEBUGGING |
651 | /* | |
652 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
653 | * will be enough to hold an OP*. | |
654 | */ | |
c4420975 | 655 | SV* const sv = sv_newmortal(); |
44a8e56a | 656 | sv_upgrade(sv, SVt_PVLV); |
657 | LvTYPE(sv) = '/'; | |
533c011a | 658 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 659 | XPUSHs(sv); |
660 | #else | |
ad64d0ec | 661 | XPUSHs(MUTABLE_SV(PL_op)); |
44a8e56a | 662 | #endif |
a0d0e21e LW |
663 | RETURN; |
664 | } | |
665 | ||
666 | /* Oversized hot code. */ | |
667 | ||
668 | PP(pp_print) | |
669 | { | |
27da23d5 | 670 | dVAR; dSP; dMARK; dORIGMARK; |
760ac839 | 671 | register PerlIO *fp; |
236988e4 | 672 | MAGIC *mg; |
159b6efe NC |
673 | GV * const gv |
674 | = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv; | |
9c9f25b8 | 675 | IO *io = GvIO(gv); |
5b468f54 | 676 | |
9c9f25b8 | 677 | if (io |
ad64d0ec | 678 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
5b468f54 | 679 | { |
01bb7c6d | 680 | had_magic: |
68dc0745 | 681 | if (MARK == ORIGMARK) { |
1c846c1f | 682 | /* If using default handle then we need to make space to |
a60c0954 NIS |
683 | * pass object as 1st arg, so move other args up ... |
684 | */ | |
4352c267 | 685 | MEXTEND(SP, 1); |
68dc0745 | 686 | ++MARK; |
687 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
688 | ++SP; | |
689 | } | |
94bc412f NC |
690 | return Perl_tied_method(aTHX_ "PRINT", mark - 1, MUTABLE_SV(io), |
691 | mg, | |
692 | (G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK | |
693 | | (PL_op->op_type == OP_SAY | |
694 | ? TIED_METHOD_SAY : 0)), sp - mark); | |
236988e4 | 695 | } |
9c9f25b8 | 696 | if (!io) { |
68b590d9 | 697 | if ( gv && GvEGVx(gv) && (io = GvIO(GvEGV(gv))) |
ad64d0ec | 698 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
01bb7c6d | 699 | goto had_magic; |
51087808 | 700 | report_evil_fh(gv); |
93189314 | 701 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
702 | goto just_say_no; |
703 | } | |
704 | else if (!(fp = IoOFP(io))) { | |
7716c5c5 NC |
705 | if (IoIFP(io)) |
706 | report_wrongway_fh(gv, '<'); | |
51087808 | 707 | else |
7716c5c5 | 708 | report_evil_fh(gv); |
93189314 | 709 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e LW |
710 | goto just_say_no; |
711 | } | |
712 | else { | |
e23d9e2f | 713 | SV * const ofs = GvSV(PL_ofsgv); /* $, */ |
a0d0e21e | 714 | MARK++; |
e23d9e2f | 715 | if (ofs && (SvGMAGICAL(ofs) || SvOK(ofs))) { |
a0d0e21e LW |
716 | while (MARK <= SP) { |
717 | if (!do_print(*MARK, fp)) | |
718 | break; | |
719 | MARK++; | |
720 | if (MARK <= SP) { | |
e23d9e2f CS |
721 | /* don't use 'ofs' here - it may be invalidated by magic callbacks */ |
722 | if (!do_print(GvSV(PL_ofsgv), fp)) { | |
a0d0e21e LW |
723 | MARK--; |
724 | break; | |
725 | } | |
726 | } | |
727 | } | |
728 | } | |
729 | else { | |
730 | while (MARK <= SP) { | |
731 | if (!do_print(*MARK, fp)) | |
732 | break; | |
733 | MARK++; | |
734 | } | |
735 | } | |
736 | if (MARK <= SP) | |
737 | goto just_say_no; | |
738 | else { | |
cfc4a7da GA |
739 | if (PL_op->op_type == OP_SAY) { |
740 | if (PerlIO_write(fp, "\n", 1) == 0 || PerlIO_error(fp)) | |
741 | goto just_say_no; | |
742 | } | |
743 | else if (PL_ors_sv && SvOK(PL_ors_sv)) | |
7889fe52 | 744 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
a0d0e21e LW |
745 | goto just_say_no; |
746 | ||
747 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 748 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
749 | goto just_say_no; |
750 | } | |
751 | } | |
752 | SP = ORIGMARK; | |
e52fd6f4 | 753 | XPUSHs(&PL_sv_yes); |
a0d0e21e LW |
754 | RETURN; |
755 | ||
756 | just_say_no: | |
757 | SP = ORIGMARK; | |
e52fd6f4 | 758 | XPUSHs(&PL_sv_undef); |
a0d0e21e LW |
759 | RETURN; |
760 | } | |
761 | ||
762 | PP(pp_rv2av) | |
763 | { | |
97aff369 | 764 | dVAR; dSP; dTOPss; |
cde874ca | 765 | const I32 gimme = GIMME_V; |
17ab7946 NC |
766 | static const char an_array[] = "an ARRAY"; |
767 | static const char a_hash[] = "a HASH"; | |
768 | const bool is_pp_rv2av = PL_op->op_type == OP_RV2AV; | |
d83b45b8 | 769 | const svtype type = is_pp_rv2av ? SVt_PVAV : SVt_PVHV; |
a0d0e21e | 770 | |
9026059d | 771 | SvGETMAGIC(sv); |
a0d0e21e | 772 | if (SvROK(sv)) { |
93d7320b DM |
773 | if (SvAMAGIC(sv)) { |
774 | sv = amagic_deref_call(sv, is_pp_rv2av ? to_av_amg : to_hv_amg); | |
93d7320b | 775 | } |
17ab7946 NC |
776 | sv = SvRV(sv); |
777 | if (SvTYPE(sv) != type) | |
dcbac5bb | 778 | /* diag_listed_as: Not an ARRAY reference */ |
17ab7946 | 779 | DIE(aTHX_ "Not %s reference", is_pp_rv2av ? an_array : a_hash); |
533c011a | 780 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 781 | SETs(sv); |
a0d0e21e LW |
782 | RETURN; |
783 | } | |
40c94d11 FC |
784 | else if (PL_op->op_private & OPpMAYBE_LVSUB) { |
785 | const I32 flags = is_lvalue_sub(); | |
786 | if (flags && !(flags & OPpENTERSUB_INARGS)) { | |
cde874ca | 787 | if (gimme != G_ARRAY) |
042560a6 | 788 | goto croak_cant_return; |
17ab7946 | 789 | SETs(sv); |
78f9721b | 790 | RETURN; |
40c94d11 | 791 | } |
78f9721b | 792 | } |
82d03984 RGS |
793 | else if (PL_op->op_flags & OPf_MOD |
794 | && PL_op->op_private & OPpLVAL_INTRO) | |
f1f66076 | 795 | Perl_croak(aTHX_ "%s", PL_no_localize_ref); |
a0d0e21e LW |
796 | } |
797 | else { | |
17ab7946 | 798 | if (SvTYPE(sv) == type) { |
533c011a | 799 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 800 | SETs(sv); |
a0d0e21e LW |
801 | RETURN; |
802 | } | |
78f9721b | 803 | else if (LVRET) { |
cde874ca | 804 | if (gimme != G_ARRAY) |
042560a6 | 805 | goto croak_cant_return; |
17ab7946 | 806 | SETs(sv); |
78f9721b SM |
807 | RETURN; |
808 | } | |
a0d0e21e LW |
809 | } |
810 | else { | |
67955e0c | 811 | GV *gv; |
1c846c1f | 812 | |
6e592b3a | 813 | if (!isGV_with_GP(sv)) { |
dc3c76f8 NC |
814 | gv = Perl_softref2xv(aTHX_ sv, is_pp_rv2av ? an_array : a_hash, |
815 | type, &sp); | |
816 | if (!gv) | |
817 | RETURN; | |
35cd451c GS |
818 | } |
819 | else { | |
159b6efe | 820 | gv = MUTABLE_GV(sv); |
a0d0e21e | 821 | } |
ad64d0ec | 822 | sv = is_pp_rv2av ? MUTABLE_SV(GvAVn(gv)) : MUTABLE_SV(GvHVn(gv)); |
533c011a | 823 | if (PL_op->op_private & OPpLVAL_INTRO) |
ad64d0ec | 824 | sv = is_pp_rv2av ? MUTABLE_SV(save_ary(gv)) : MUTABLE_SV(save_hash(gv)); |
533c011a | 825 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 826 | SETs(sv); |
a0d0e21e LW |
827 | RETURN; |
828 | } | |
40c94d11 FC |
829 | else if (PL_op->op_private & OPpMAYBE_LVSUB) { |
830 | const I32 flags = is_lvalue_sub(); | |
831 | if (flags && !(flags & OPpENTERSUB_INARGS)) { | |
cde874ca | 832 | if (gimme != G_ARRAY) |
042560a6 | 833 | goto croak_cant_return; |
17ab7946 | 834 | SETs(sv); |
78f9721b | 835 | RETURN; |
40c94d11 | 836 | } |
78f9721b | 837 | } |
a0d0e21e LW |
838 | } |
839 | } | |
840 | ||
17ab7946 | 841 | if (is_pp_rv2av) { |
502c6561 | 842 | AV *const av = MUTABLE_AV(sv); |
486ec47a | 843 | /* The guts of pp_rv2av, with no intending change to preserve history |
17ab7946 NC |
844 | (until such time as we get tools that can do blame annotation across |
845 | whitespace changes. */ | |
96913b52 VP |
846 | if (gimme == G_ARRAY) { |
847 | const I32 maxarg = AvFILL(av) + 1; | |
848 | (void)POPs; /* XXXX May be optimized away? */ | |
849 | EXTEND(SP, maxarg); | |
850 | if (SvRMAGICAL(av)) { | |
851 | U32 i; | |
852 | for (i=0; i < (U32)maxarg; i++) { | |
853 | SV ** const svp = av_fetch(av, i, FALSE); | |
854 | /* See note in pp_helem, and bug id #27839 */ | |
855 | SP[i+1] = svp | |
856 | ? SvGMAGICAL(*svp) ? (mg_get(*svp), *svp) : *svp | |
857 | : &PL_sv_undef; | |
858 | } | |
859 | } | |
860 | else { | |
861 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
93965878 | 862 | } |
96913b52 | 863 | SP += maxarg; |
1c846c1f | 864 | } |
96913b52 VP |
865 | else if (gimme == G_SCALAR) { |
866 | dTARGET; | |
867 | const I32 maxarg = AvFILL(av) + 1; | |
868 | SETi(maxarg); | |
93965878 | 869 | } |
17ab7946 NC |
870 | } else { |
871 | /* The guts of pp_rv2hv */ | |
96913b52 VP |
872 | if (gimme == G_ARRAY) { /* array wanted */ |
873 | *PL_stack_sp = sv; | |
981b7185 | 874 | return Perl_do_kv(aTHX); |
96913b52 VP |
875 | } |
876 | else if (gimme == G_SCALAR) { | |
877 | dTARGET; | |
878 | TARG = Perl_hv_scalar(aTHX_ MUTABLE_HV(sv)); | |
879 | SPAGAIN; | |
880 | SETTARG; | |
881 | } | |
17ab7946 | 882 | } |
be85d344 | 883 | RETURN; |
042560a6 NC |
884 | |
885 | croak_cant_return: | |
886 | Perl_croak(aTHX_ "Can't return %s to lvalue scalar context", | |
887 | is_pp_rv2av ? "array" : "hash"); | |
77e217c6 | 888 | RETURN; |
a0d0e21e LW |
889 | } |
890 | ||
10c8fecd GS |
891 | STATIC void |
892 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
893 | { | |
97aff369 | 894 | dVAR; |
7918f24d NC |
895 | |
896 | PERL_ARGS_ASSERT_DO_ODDBALL; | |
897 | ||
10c8fecd GS |
898 | if (*relem) { |
899 | SV *tmpstr; | |
b464bac0 | 900 | const HE *didstore; |
6d822dc4 MS |
901 | |
902 | if (ckWARN(WARN_MISC)) { | |
a3b680e6 | 903 | const char *err; |
10c8fecd GS |
904 | if (relem == firstrelem && |
905 | SvROK(*relem) && | |
906 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
907 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
908 | { | |
a3b680e6 | 909 | err = "Reference found where even-sized list expected"; |
10c8fecd GS |
910 | } |
911 | else | |
a3b680e6 | 912 | err = "Odd number of elements in hash assignment"; |
f1f66076 | 913 | Perl_warner(aTHX_ packWARN(WARN_MISC), "%s", err); |
10c8fecd | 914 | } |
6d822dc4 | 915 | |
561b68a9 | 916 | tmpstr = newSV(0); |
6d822dc4 MS |
917 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
918 | if (SvMAGICAL(hash)) { | |
919 | if (SvSMAGICAL(tmpstr)) | |
920 | mg_set(tmpstr); | |
921 | if (!didstore) | |
922 | sv_2mortal(tmpstr); | |
923 | } | |
924 | TAINT_NOT; | |
10c8fecd GS |
925 | } |
926 | } | |
927 | ||
a0d0e21e LW |
928 | PP(pp_aassign) |
929 | { | |
27da23d5 | 930 | dVAR; dSP; |
3280af22 NIS |
931 | SV **lastlelem = PL_stack_sp; |
932 | SV **lastrelem = PL_stack_base + POPMARK; | |
933 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
934 | SV **firstlelem = lastrelem + 1; |
935 | ||
936 | register SV **relem; | |
937 | register SV **lelem; | |
938 | ||
939 | register SV *sv; | |
940 | register AV *ary; | |
941 | ||
54310121 | 942 | I32 gimme; |
a0d0e21e LW |
943 | HV *hash; |
944 | I32 i; | |
945 | int magic; | |
ca65944e | 946 | int duplicates = 0; |
cbbf8932 | 947 | SV **firsthashrelem = NULL; /* "= 0" keeps gcc 2.95 quiet */ |
5637b936 | 948 | |
3280af22 | 949 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
ca65944e | 950 | gimme = GIMME_V; |
a0d0e21e LW |
951 | |
952 | /* If there's a common identifier on both sides we have to take | |
953 | * special care that assigning the identifier on the left doesn't | |
954 | * clobber a value on the right that's used later in the list. | |
acdea6f0 | 955 | * Don't bother if LHS is just an empty hash or array. |
a0d0e21e | 956 | */ |
acdea6f0 DM |
957 | |
958 | if ( (PL_op->op_private & OPpASSIGN_COMMON) | |
959 | && ( | |
960 | firstlelem != lastlelem | |
961 | || ! ((sv = *firstlelem)) | |
962 | || SvMAGICAL(sv) | |
963 | || ! (SvTYPE(sv) == SVt_PVAV || SvTYPE(sv) == SVt_PVHV) | |
964 | || (SvTYPE(sv) == SVt_PVAV && AvFILL((AV*)sv) != -1) | |
1b95d04f | 965 | || (SvTYPE(sv) == SVt_PVHV && HvUSEDKEYS((HV*)sv) != 0) |
acdea6f0 DM |
966 | ) |
967 | ) { | |
cc5e57d2 | 968 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd | 969 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
155aba94 | 970 | if ((sv = *relem)) { |
a1f49e72 | 971 | TAINT_NOT; /* Each item is independent */ |
61e5f455 NC |
972 | |
973 | /* Dear TODO test in t/op/sort.t, I love you. | |
974 | (It's relying on a panic, not a "semi-panic" from newSVsv() | |
975 | and then an assertion failure below.) */ | |
976 | if (SvIS_FREED(sv)) { | |
977 | Perl_croak(aTHX_ "panic: attempt to copy freed scalar %p", | |
978 | (void*)sv); | |
979 | } | |
980 | /* Specifically *not* sv_mortalcopy(), as that will steal TEMPs, | |
981 | and we need a second copy of a temp here. */ | |
982 | *relem = sv_2mortal(newSVsv(sv)); | |
a1f49e72 | 983 | } |
10c8fecd | 984 | } |
a0d0e21e LW |
985 | } |
986 | ||
987 | relem = firstrelem; | |
988 | lelem = firstlelem; | |
4608196e RGS |
989 | ary = NULL; |
990 | hash = NULL; | |
10c8fecd | 991 | |
a0d0e21e | 992 | while (lelem <= lastlelem) { |
bbce6d69 | 993 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
994 | sv = *lelem++; |
995 | switch (SvTYPE(sv)) { | |
996 | case SVt_PVAV: | |
60edcf09 | 997 | ary = MUTABLE_AV(sv); |
748a9306 | 998 | magic = SvMAGICAL(ary) != 0; |
60edcf09 FC |
999 | ENTER; |
1000 | SAVEFREESV(SvREFCNT_inc_simple_NN(sv)); | |
a0d0e21e | 1001 | av_clear(ary); |
7e42bd57 | 1002 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1003 | i = 0; |
1004 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1005 | SV **didstore; |
a0d0e21e | 1006 | assert(*relem); |
4f0556e9 NC |
1007 | sv = newSV(0); |
1008 | sv_setsv(sv, *relem); | |
a0d0e21e | 1009 | *(relem++) = sv; |
5117ca91 GS |
1010 | didstore = av_store(ary,i++,sv); |
1011 | if (magic) { | |
8ef24240 | 1012 | if (SvSMAGICAL(sv)) |
fb73857a | 1013 | mg_set(sv); |
5117ca91 | 1014 | if (!didstore) |
8127e0e3 | 1015 | sv_2mortal(sv); |
5117ca91 | 1016 | } |
bbce6d69 | 1017 | TAINT_NOT; |
a0d0e21e | 1018 | } |
354b0578 | 1019 | if (PL_delaymagic & DM_ARRAY_ISA) |
ad64d0ec | 1020 | SvSETMAGIC(MUTABLE_SV(ary)); |
60edcf09 | 1021 | LEAVE; |
a0d0e21e | 1022 | break; |
10c8fecd | 1023 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e | 1024 | SV *tmpstr; |
45960564 | 1025 | SV** topelem = relem; |
a0d0e21e | 1026 | |
60edcf09 | 1027 | hash = MUTABLE_HV(sv); |
748a9306 | 1028 | magic = SvMAGICAL(hash) != 0; |
60edcf09 FC |
1029 | ENTER; |
1030 | SAVEFREESV(SvREFCNT_inc_simple_NN(sv)); | |
a0d0e21e | 1031 | hv_clear(hash); |
ca65944e | 1032 | firsthashrelem = relem; |
a0d0e21e LW |
1033 | |
1034 | while (relem < lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1035 | HE *didstore; |
6136c704 AL |
1036 | sv = *relem ? *relem : &PL_sv_no; |
1037 | relem++; | |
561b68a9 | 1038 | tmpstr = newSV(0); |
a0d0e21e LW |
1039 | if (*relem) |
1040 | sv_setsv(tmpstr,*relem); /* value */ | |
45960564 DM |
1041 | relem++; |
1042 | if (gimme != G_VOID) { | |
1043 | if (hv_exists_ent(hash, sv, 0)) | |
1044 | /* key overwrites an existing entry */ | |
1045 | duplicates += 2; | |
1046 | else | |
1047 | if (gimme == G_ARRAY) { | |
1048 | /* copy element back: possibly to an earlier | |
1049 | * stack location if we encountered dups earlier */ | |
1050 | *topelem++ = sv; | |
1051 | *topelem++ = tmpstr; | |
1052 | } | |
1053 | } | |
5117ca91 GS |
1054 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1055 | if (magic) { | |
8ef24240 | 1056 | if (SvSMAGICAL(tmpstr)) |
fb73857a | 1057 | mg_set(tmpstr); |
5117ca91 | 1058 | if (!didstore) |
8127e0e3 | 1059 | sv_2mortal(tmpstr); |
5117ca91 | 1060 | } |
bbce6d69 | 1061 | TAINT_NOT; |
8e07c86e | 1062 | } |
6a0deba8 | 1063 | if (relem == lastrelem) { |
10c8fecd | 1064 | do_oddball(hash, relem, firstrelem); |
6a0deba8 | 1065 | relem++; |
1930e939 | 1066 | } |
60edcf09 | 1067 | LEAVE; |
a0d0e21e LW |
1068 | } |
1069 | break; | |
1070 | default: | |
6fc92669 GS |
1071 | if (SvIMMORTAL(sv)) { |
1072 | if (relem <= lastrelem) | |
1073 | relem++; | |
1074 | break; | |
a0d0e21e LW |
1075 | } |
1076 | if (relem <= lastrelem) { | |
1c70fb82 FC |
1077 | if ( |
1078 | SvTEMP(sv) && !SvSMAGICAL(sv) && SvREFCNT(sv) == 1 && | |
1079 | (!isGV_with_GP(sv) || SvFAKE(sv)) && ckWARN(WARN_MISC) | |
1080 | ) | |
1081 | Perl_warner(aTHX_ | |
1082 | packWARN(WARN_MISC), | |
1083 | "Useless assignment to a temporary" | |
1084 | ); | |
a0d0e21e LW |
1085 | sv_setsv(sv, *relem); |
1086 | *(relem++) = sv; | |
1087 | } | |
1088 | else | |
3280af22 | 1089 | sv_setsv(sv, &PL_sv_undef); |
8ef24240 | 1090 | SvSETMAGIC(sv); |
a0d0e21e LW |
1091 | break; |
1092 | } | |
1093 | } | |
3280af22 | 1094 | if (PL_delaymagic & ~DM_DELAY) { |
985213f2 AB |
1095 | /* Will be used to set PL_tainting below */ |
1096 | UV tmp_uid = PerlProc_getuid(); | |
1097 | UV tmp_euid = PerlProc_geteuid(); | |
1098 | UV tmp_gid = PerlProc_getgid(); | |
1099 | UV tmp_egid = PerlProc_getegid(); | |
1100 | ||
3280af22 | 1101 | if (PL_delaymagic & DM_UID) { |
a0d0e21e | 1102 | #ifdef HAS_SETRESUID |
985213f2 AB |
1103 | (void)setresuid((PL_delaymagic & DM_RUID) ? PL_delaymagic_uid : (Uid_t)-1, |
1104 | (PL_delaymagic & DM_EUID) ? PL_delaymagic_euid : (Uid_t)-1, | |
fb934a90 | 1105 | (Uid_t)-1); |
56febc5e AD |
1106 | #else |
1107 | # ifdef HAS_SETREUID | |
985213f2 AB |
1108 | (void)setreuid((PL_delaymagic & DM_RUID) ? PL_delaymagic_uid : (Uid_t)-1, |
1109 | (PL_delaymagic & DM_EUID) ? PL_delaymagic_euid : (Uid_t)-1); | |
56febc5e AD |
1110 | # else |
1111 | # ifdef HAS_SETRUID | |
b28d0864 | 1112 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
985213f2 | 1113 | (void)setruid(PL_delaymagic_uid); |
b28d0864 | 1114 | PL_delaymagic &= ~DM_RUID; |
a0d0e21e | 1115 | } |
56febc5e AD |
1116 | # endif /* HAS_SETRUID */ |
1117 | # ifdef HAS_SETEUID | |
b28d0864 | 1118 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
985213f2 | 1119 | (void)seteuid(PL_delaymagic_euid); |
b28d0864 | 1120 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e | 1121 | } |
56febc5e | 1122 | # endif /* HAS_SETEUID */ |
b28d0864 | 1123 | if (PL_delaymagic & DM_UID) { |
985213f2 | 1124 | if (PL_delaymagic_uid != PL_delaymagic_euid) |
cea2e8a9 | 1125 | DIE(aTHX_ "No setreuid available"); |
985213f2 | 1126 | (void)PerlProc_setuid(PL_delaymagic_uid); |
a0d0e21e | 1127 | } |
56febc5e AD |
1128 | # endif /* HAS_SETREUID */ |
1129 | #endif /* HAS_SETRESUID */ | |
985213f2 AB |
1130 | tmp_uid = PerlProc_getuid(); |
1131 | tmp_euid = PerlProc_geteuid(); | |
a0d0e21e | 1132 | } |
3280af22 | 1133 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1134 | #ifdef HAS_SETRESGID |
985213f2 AB |
1135 | (void)setresgid((PL_delaymagic & DM_RGID) ? PL_delaymagic_gid : (Gid_t)-1, |
1136 | (PL_delaymagic & DM_EGID) ? PL_delaymagic_egid : (Gid_t)-1, | |
fb934a90 | 1137 | (Gid_t)-1); |
56febc5e AD |
1138 | #else |
1139 | # ifdef HAS_SETREGID | |
985213f2 AB |
1140 | (void)setregid((PL_delaymagic & DM_RGID) ? PL_delaymagic_gid : (Gid_t)-1, |
1141 | (PL_delaymagic & DM_EGID) ? PL_delaymagic_egid : (Gid_t)-1); | |
56febc5e AD |
1142 | # else |
1143 | # ifdef HAS_SETRGID | |
b28d0864 | 1144 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
985213f2 | 1145 | (void)setrgid(PL_delaymagic_gid); |
b28d0864 | 1146 | PL_delaymagic &= ~DM_RGID; |
a0d0e21e | 1147 | } |
56febc5e AD |
1148 | # endif /* HAS_SETRGID */ |
1149 | # ifdef HAS_SETEGID | |
b28d0864 | 1150 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
985213f2 | 1151 | (void)setegid(PL_delaymagic_egid); |
b28d0864 | 1152 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e | 1153 | } |
56febc5e | 1154 | # endif /* HAS_SETEGID */ |
b28d0864 | 1155 | if (PL_delaymagic & DM_GID) { |
985213f2 | 1156 | if (PL_delaymagic_gid != PL_delaymagic_egid) |
cea2e8a9 | 1157 | DIE(aTHX_ "No setregid available"); |
985213f2 | 1158 | (void)PerlProc_setgid(PL_delaymagic_gid); |
a0d0e21e | 1159 | } |
56febc5e AD |
1160 | # endif /* HAS_SETREGID */ |
1161 | #endif /* HAS_SETRESGID */ | |
985213f2 AB |
1162 | tmp_gid = PerlProc_getgid(); |
1163 | tmp_egid = PerlProc_getegid(); | |
a0d0e21e | 1164 | } |
985213f2 | 1165 | PL_tainting |= (tmp_uid && (tmp_euid != tmp_uid || tmp_egid != tmp_gid)); |
a0d0e21e | 1166 | } |
3280af22 | 1167 | PL_delaymagic = 0; |
54310121 | 1168 | |
54310121 | 1169 | if (gimme == G_VOID) |
1170 | SP = firstrelem - 1; | |
1171 | else if (gimme == G_SCALAR) { | |
1172 | dTARGET; | |
1173 | SP = firstrelem; | |
ca65944e | 1174 | SETi(lastrelem - firstrelem + 1 - duplicates); |
54310121 | 1175 | } |
1176 | else { | |
ca65944e | 1177 | if (ary) |
a0d0e21e | 1178 | SP = lastrelem; |
ca65944e RGS |
1179 | else if (hash) { |
1180 | if (duplicates) { | |
45960564 DM |
1181 | /* at this point we have removed the duplicate key/value |
1182 | * pairs from the stack, but the remaining values may be | |
1183 | * wrong; i.e. with (a 1 a 2 b 3) on the stack we've removed | |
1184 | * the (a 2), but the stack now probably contains | |
1185 | * (a <freed> b 3), because { hv_save(a,1); hv_save(a,2) } | |
1186 | * obliterates the earlier key. So refresh all values. */ | |
ca65944e | 1187 | lastrelem -= duplicates; |
45960564 DM |
1188 | relem = firsthashrelem; |
1189 | while (relem < lastrelem) { | |
1190 | HE *he; | |
1191 | sv = *relem++; | |
1192 | he = hv_fetch_ent(hash, sv, 0, 0); | |
1193 | *relem++ = (he ? HeVAL(he) : &PL_sv_undef); | |
1194 | } | |
ca65944e RGS |
1195 | } |
1196 | SP = lastrelem; | |
1197 | } | |
a0d0e21e LW |
1198 | else |
1199 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 1200 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 1201 | while (relem <= SP) |
3280af22 | 1202 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 1203 | } |
08aeb9f7 | 1204 | |
54310121 | 1205 | RETURN; |
a0d0e21e LW |
1206 | } |
1207 | ||
8782bef2 GB |
1208 | PP(pp_qr) |
1209 | { | |
97aff369 | 1210 | dVAR; dSP; |
c4420975 | 1211 | register PMOP * const pm = cPMOP; |
fe578d7f | 1212 | REGEXP * rx = PM_GETRE(pm); |
10599a69 | 1213 | SV * const pkg = rx ? CALLREG_PACKAGE(rx) : NULL; |
c4420975 | 1214 | SV * const rv = sv_newmortal(); |
d63c20f2 DM |
1215 | CV **cvp; |
1216 | CV *cv; | |
288b8c02 NC |
1217 | |
1218 | SvUPGRADE(rv, SVt_IV); | |
c2123ae3 NC |
1219 | /* For a subroutine describing itself as "This is a hacky workaround" I'm |
1220 | loathe to use it here, but it seems to be the right fix. Or close. | |
1221 | The key part appears to be that it's essential for pp_qr to return a new | |
1222 | object (SV), which implies that there needs to be an effective way to | |
1223 | generate a new SV from the existing SV that is pre-compiled in the | |
1224 | optree. */ | |
1225 | SvRV_set(rv, MUTABLE_SV(reg_temp_copy(NULL, rx))); | |
288b8c02 NC |
1226 | SvROK_on(rv); |
1227 | ||
d63c20f2 DM |
1228 | cvp = &( ((struct regexp*)SvANY(SvRV(rv)))->qr_anoncv); |
1229 | if ((cv = *cvp) && CvCLONE(*cvp)) { | |
1230 | *cvp = cv_clone(cv); | |
1231 | SvREFCNT_dec(cv); | |
1232 | } | |
1233 | ||
288b8c02 | 1234 | if (pkg) { |
f815daf2 | 1235 | HV *const stash = gv_stashsv(pkg, GV_ADD); |
a954f6ee | 1236 | SvREFCNT_dec(pkg); |
288b8c02 NC |
1237 | (void)sv_bless(rv, stash); |
1238 | } | |
1239 | ||
9274aefd | 1240 | if (RX_EXTFLAGS(rx) & RXf_TAINTED) { |
e08e52cf | 1241 | SvTAINTED_on(rv); |
9274aefd DM |
1242 | SvTAINTED_on(SvRV(rv)); |
1243 | } | |
c8c13c22 JB |
1244 | XPUSHs(rv); |
1245 | RETURN; | |
8782bef2 GB |
1246 | } |
1247 | ||
a0d0e21e LW |
1248 | PP(pp_match) |
1249 | { | |
97aff369 | 1250 | dVAR; dSP; dTARG; |
a0d0e21e | 1251 | register PMOP *pm = cPMOP; |
d65afb4b | 1252 | PMOP *dynpm = pm; |
0d46e09a SP |
1253 | register const char *t; |
1254 | register const char *s; | |
5c144d81 | 1255 | const char *strend; |
a0d0e21e | 1256 | I32 global; |
1ed74d04 | 1257 | U8 r_flags = REXEC_CHECKED; |
5c144d81 | 1258 | const char *truebase; /* Start of string */ |
aaa362c4 | 1259 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1260 | bool rxtainted; |
a3b680e6 | 1261 | const I32 gimme = GIMME; |
a0d0e21e | 1262 | STRLEN len; |
748a9306 | 1263 | I32 minmatch = 0; |
a3b680e6 | 1264 | const I32 oldsave = PL_savestack_ix; |
f86702cc | 1265 | I32 update_minmatch = 1; |
e60df1fa | 1266 | I32 had_zerolen = 0; |
58e23c8d | 1267 | U32 gpos = 0; |
a0d0e21e | 1268 | |
533c011a | 1269 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1270 | TARG = POPs; |
59f00321 RGS |
1271 | else if (PL_op->op_private & OPpTARGET_MY) |
1272 | GETTARGET; | |
a0d0e21e | 1273 | else { |
54b9620d | 1274 | TARG = DEFSV; |
a0d0e21e LW |
1275 | EXTEND(SP,1); |
1276 | } | |
d9f424b2 | 1277 | |
c277df42 | 1278 | PUTBACK; /* EVAL blocks need stack_sp. */ |
69dc4b30 FC |
1279 | /* Skip get-magic if this is a qr// clone, because regcomp has |
1280 | already done it. */ | |
1281 | s = ((struct regexp *)SvANY(rx))->mother_re | |
1282 | ? SvPV_nomg_const(TARG, len) | |
1283 | : SvPV_const(TARG, len); | |
a0d0e21e | 1284 | if (!s) |
2269b42e | 1285 | DIE(aTHX_ "panic: pp_match"); |
890ce7af | 1286 | strend = s + len; |
07bc277f | 1287 | rxtainted = ((RX_EXTFLAGS(rx) & RXf_TAINTED) || |
3280af22 | 1288 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 1289 | TAINT_NOT; |
a0d0e21e | 1290 | |
a30b2f1f | 1291 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 1292 | |
d65afb4b | 1293 | /* PMdf_USED is set after a ?? matches once */ |
c737faaf YO |
1294 | if ( |
1295 | #ifdef USE_ITHREADS | |
1296 | SvREADONLY(PL_regex_pad[pm->op_pmoffset]) | |
1297 | #else | |
1298 | pm->op_pmflags & PMf_USED | |
1299 | #endif | |
1300 | ) { | |
e5dc5375 | 1301 | DEBUG_r(PerlIO_printf(Perl_debug_log, "?? already matched once")); |
c277df42 | 1302 | failure: |
e5dc5375 | 1303 | |
a0d0e21e LW |
1304 | if (gimme == G_ARRAY) |
1305 | RETURN; | |
1306 | RETPUSHNO; | |
1307 | } | |
1308 | ||
c737faaf YO |
1309 | |
1310 | ||
d65afb4b | 1311 | /* empty pattern special-cased to use last successful pattern if possible */ |
220fc49f | 1312 | if (!RX_PRELEN(rx) && PL_curpm) { |
3280af22 | 1313 | pm = PL_curpm; |
aaa362c4 | 1314 | rx = PM_GETRE(pm); |
a0d0e21e | 1315 | } |
d65afb4b | 1316 | |
e5dc5375 KW |
1317 | if (RX_MINLEN(rx) > (I32)len) { |
1318 | DEBUG_r(PerlIO_printf(Perl_debug_log, "String shorter than min possible regex match\n")); | |
d65afb4b | 1319 | goto failure; |
e5dc5375 | 1320 | } |
c277df42 | 1321 | |
a0d0e21e | 1322 | truebase = t = s; |
ad94a511 IZ |
1323 | |
1324 | /* XXXX What part of this is needed with true \G-support? */ | |
d65afb4b | 1325 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
07bc277f | 1326 | RX_OFFS(rx)[0].start = -1; |
a0d0e21e | 1327 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
c445ea15 | 1328 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 | 1329 | if (mg && mg->mg_len >= 0) { |
07bc277f NC |
1330 | if (!(RX_EXTFLAGS(rx) & RXf_GPOS_SEEN)) |
1331 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; | |
1332 | else if (RX_EXTFLAGS(rx) & RXf_ANCH_GPOS) { | |
0ef3e39e | 1333 | r_flags |= REXEC_IGNOREPOS; |
07bc277f NC |
1334 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; |
1335 | } else if (RX_EXTFLAGS(rx) & RXf_GPOS_FLOAT) | |
58e23c8d YO |
1336 | gpos = mg->mg_len; |
1337 | else | |
07bc277f NC |
1338 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; |
1339 | minmatch = (mg->mg_flags & MGf_MINMATCH) ? RX_GOFS(rx) + 1 : 0; | |
f86702cc | 1340 | update_minmatch = 0; |
748a9306 | 1341 | } |
a0d0e21e LW |
1342 | } |
1343 | } | |
a229a030 | 1344 | /* XXX: comment out !global get safe $1 vars after a |
62e7980d | 1345 | match, BUT be aware that this leads to dramatic slowdowns on |
a229a030 YO |
1346 | /g matches against large strings. So far a solution to this problem |
1347 | appears to be quite tricky. | |
1348 | Test for the unsafe vars are TODO for now. */ | |
0d8a731b DM |
1349 | if ( (!global && RX_NPARENS(rx)) |
1350 | || SvTEMP(TARG) || SvAMAGIC(TARG) || PL_sawampersand | |
1351 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY))) | |
14977893 | 1352 | r_flags |= REXEC_COPY_STR; |
22e551b9 | 1353 | |
d7be1480 | 1354 | play_it_again: |
07bc277f NC |
1355 | if (global && RX_OFFS(rx)[0].start != -1) { |
1356 | t = s = RX_OFFS(rx)[0].end + truebase - RX_GOFS(rx); | |
e5dc5375 KW |
1357 | if ((s + RX_MINLEN(rx)) > strend || s < truebase) { |
1358 | DEBUG_r(PerlIO_printf(Perl_debug_log, "Regex match can't succeed, so not even tried\n")); | |
a0d0e21e | 1359 | goto nope; |
e5dc5375 | 1360 | } |
f86702cc | 1361 | if (update_minmatch++) |
e60df1fa | 1362 | minmatch = had_zerolen; |
a0d0e21e | 1363 | } |
07bc277f | 1364 | if (RX_EXTFLAGS(rx) & RXf_USE_INTUIT && |
3c8556c3 | 1365 | DO_UTF8(TARG) == (RX_UTF8(rx) != 0)) { |
5c144d81 NC |
1366 | /* FIXME - can PL_bostr be made const char *? */ |
1367 | PL_bostr = (char *)truebase; | |
f9f4320a | 1368 | s = CALLREG_INTUIT_START(rx, TARG, (char *)s, (char *)strend, r_flags, NULL); |
f722798b IZ |
1369 | |
1370 | if (!s) | |
1371 | goto nope; | |
07bc277f | 1372 | if ( (RX_EXTFLAGS(rx) & RXf_CHECK_ALL) |
14977893 | 1373 | && !PL_sawampersand |
07bc277f | 1374 | && !(RX_EXTFLAGS(rx) & RXf_PMf_KEEPCOPY) |
05b4157f | 1375 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ |
f722798b | 1376 | goto yup; |
a0d0e21e | 1377 | } |
77da2310 NC |
1378 | if (!CALLREGEXEC(rx, (char*)s, (char *)strend, (char*)truebase, |
1379 | minmatch, TARG, NUM2PTR(void*, gpos), r_flags)) | |
1380 | goto ret_no; | |
1381 | ||
1382 | PL_curpm = pm; | |
1383 | if (dynpm->op_pmflags & PMf_ONCE) { | |
c737faaf | 1384 | #ifdef USE_ITHREADS |
77da2310 | 1385 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); |
c737faaf | 1386 | #else |
77da2310 | 1387 | dynpm->op_pmflags |= PMf_USED; |
c737faaf | 1388 | #endif |
a0d0e21e | 1389 | } |
a0d0e21e LW |
1390 | |
1391 | gotcha: | |
72311751 GS |
1392 | if (rxtainted) |
1393 | RX_MATCH_TAINTED_on(rx); | |
1394 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1395 | if (gimme == G_ARRAY) { |
07bc277f | 1396 | const I32 nparens = RX_NPARENS(rx); |
a3b680e6 | 1397 | I32 i = (global && !nparens) ? 1 : 0; |
a0d0e21e | 1398 | |
c277df42 | 1399 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1400 | EXTEND(SP, nparens + i); |
1401 | EXTEND_MORTAL(nparens + i); | |
1402 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e | 1403 | PUSHs(sv_newmortal()); |
07bc277f NC |
1404 | if ((RX_OFFS(rx)[i].start != -1) && RX_OFFS(rx)[i].end != -1 ) { |
1405 | const I32 len = RX_OFFS(rx)[i].end - RX_OFFS(rx)[i].start; | |
1406 | s = RX_OFFS(rx)[i].start + truebase; | |
1407 | if (RX_OFFS(rx)[i].end < 0 || RX_OFFS(rx)[i].start < 0 || | |
290deeac | 1408 | len < 0 || len > strend - s) |
5637ef5b NC |
1409 | DIE(aTHX_ "panic: pp_match start/end pointers, i=%ld, " |
1410 | "start=%ld, end=%ld, s=%p, strend=%p, len=%"UVuf, | |
1411 | (long) i, (long) RX_OFFS(rx)[i].start, | |
1412 | (long)RX_OFFS(rx)[i].end, s, strend, (UV) len); | |
a0d0e21e | 1413 | sv_setpvn(*SP, s, len); |
cce850e4 | 1414 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1415 | SvUTF8_on(*SP); |
a0d0e21e LW |
1416 | } |
1417 | } | |
1418 | if (global) { | |
d65afb4b | 1419 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
6136c704 | 1420 | MAGIC* mg = NULL; |
0af80b60 HS |
1421 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
1422 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1423 | if (!mg) { | |
d83f0a82 NC |
1424 | #ifdef PERL_OLD_COPY_ON_WRITE |
1425 | if (SvIsCOW(TARG)) | |
1426 | sv_force_normal_flags(TARG, 0); | |
1427 | #endif | |
1428 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1429 | &PL_vtbl_mglob, NULL, 0); | |
0af80b60 | 1430 | } |
07bc277f NC |
1431 | if (RX_OFFS(rx)[0].start != -1) { |
1432 | mg->mg_len = RX_OFFS(rx)[0].end; | |
1433 | if (RX_OFFS(rx)[0].start + RX_GOFS(rx) == (UV)RX_OFFS(rx)[0].end) | |
0af80b60 HS |
1434 | mg->mg_flags |= MGf_MINMATCH; |
1435 | else | |
1436 | mg->mg_flags &= ~MGf_MINMATCH; | |
1437 | } | |
1438 | } | |
07bc277f NC |
1439 | had_zerolen = (RX_OFFS(rx)[0].start != -1 |
1440 | && (RX_OFFS(rx)[0].start + RX_GOFS(rx) | |
1441 | == (UV)RX_OFFS(rx)[0].end)); | |
c277df42 | 1442 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1443 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1444 | goto play_it_again; |
1445 | } | |
ffc61ed2 | 1446 | else if (!nparens) |
bde848c5 | 1447 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1448 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1449 | RETURN; |
1450 | } | |
1451 | else { | |
1452 | if (global) { | |
cbbf8932 | 1453 | MAGIC* mg; |
a0d0e21e | 1454 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
14befaf4 | 1455 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
cbbf8932 AL |
1456 | else |
1457 | mg = NULL; | |
a0d0e21e | 1458 | if (!mg) { |
d83f0a82 NC |
1459 | #ifdef PERL_OLD_COPY_ON_WRITE |
1460 | if (SvIsCOW(TARG)) | |
1461 | sv_force_normal_flags(TARG, 0); | |
1462 | #endif | |
1463 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1464 | &PL_vtbl_mglob, NULL, 0); | |
a0d0e21e | 1465 | } |
07bc277f NC |
1466 | if (RX_OFFS(rx)[0].start != -1) { |
1467 | mg->mg_len = RX_OFFS(rx)[0].end; | |
1468 | if (RX_OFFS(rx)[0].start + RX_GOFS(rx) == (UV)RX_OFFS(rx)[0].end) | |
748a9306 LW |
1469 | mg->mg_flags |= MGf_MINMATCH; |
1470 | else | |
1471 | mg->mg_flags &= ~MGf_MINMATCH; | |
1472 | } | |
a0d0e21e | 1473 | } |
4633a7c4 | 1474 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1475 | RETPUSHYES; |
1476 | } | |
1477 | ||
f722798b | 1478 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1479 | if (rxtainted) |
1480 | RX_MATCH_TAINTED_on(rx); | |
1481 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1482 | PL_curpm = pm; |
c737faaf YO |
1483 | if (dynpm->op_pmflags & PMf_ONCE) { |
1484 | #ifdef USE_ITHREADS | |
1485 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); | |
1486 | #else | |
1487 | dynpm->op_pmflags |= PMf_USED; | |
1488 | #endif | |
1489 | } | |
cf93c79d | 1490 | if (RX_MATCH_COPIED(rx)) |
07bc277f | 1491 | Safefree(RX_SUBBEG(rx)); |
cf93c79d | 1492 | RX_MATCH_COPIED_off(rx); |
07bc277f | 1493 | RX_SUBBEG(rx) = NULL; |
a0d0e21e | 1494 | if (global) { |
5c144d81 | 1495 | /* FIXME - should rx->subbeg be const char *? */ |
07bc277f NC |
1496 | RX_SUBBEG(rx) = (char *) truebase; |
1497 | RX_OFFS(rx)[0].start = s - truebase; | |
a30b2f1f | 1498 | if (RX_MATCH_UTF8(rx)) { |
07bc277f NC |
1499 | char * const t = (char*)utf8_hop((U8*)s, RX_MINLENRET(rx)); |
1500 | RX_OFFS(rx)[0].end = t - truebase; | |
60aeb6fd NIS |
1501 | } |
1502 | else { | |
07bc277f | 1503 | RX_OFFS(rx)[0].end = s - truebase + RX_MINLENRET(rx); |
60aeb6fd | 1504 | } |
07bc277f | 1505 | RX_SUBLEN(rx) = strend - truebase; |
a0d0e21e | 1506 | goto gotcha; |
1c846c1f | 1507 | } |
07bc277f | 1508 | if (PL_sawampersand || RX_EXTFLAGS(rx) & RXf_PMf_KEEPCOPY) { |
14977893 | 1509 | I32 off; |
f8c7b90f | 1510 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
1511 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
1512 | if (DEBUG_C_TEST) { | |
1513 | PerlIO_printf(Perl_debug_log, | |
1514 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", | |
6c9570dc | 1515 | (int) SvTYPE(TARG), (void*)truebase, (void*)t, |
ed252734 NC |
1516 | (int)(t-truebase)); |
1517 | } | |
bdd9a1b1 NC |
1518 | RX_SAVED_COPY(rx) = sv_setsv_cow(RX_SAVED_COPY(rx), TARG); |
1519 | RX_SUBBEG(rx) | |
1520 | = (char *) SvPVX_const(RX_SAVED_COPY(rx)) + (t - truebase); | |
1521 | assert (SvPOKp(RX_SAVED_COPY(rx))); | |
ed252734 NC |
1522 | } else |
1523 | #endif | |
1524 | { | |
14977893 | 1525 | |
07bc277f | 1526 | RX_SUBBEG(rx) = savepvn(t, strend - t); |
f8c7b90f | 1527 | #ifdef PERL_OLD_COPY_ON_WRITE |
bdd9a1b1 | 1528 | RX_SAVED_COPY(rx) = NULL; |
ed252734 NC |
1529 | #endif |
1530 | } | |
07bc277f | 1531 | RX_SUBLEN(rx) = strend - t; |
14977893 | 1532 | RX_MATCH_COPIED_on(rx); |
07bc277f NC |
1533 | off = RX_OFFS(rx)[0].start = s - t; |
1534 | RX_OFFS(rx)[0].end = off + RX_MINLENRET(rx); | |
14977893 JH |
1535 | } |
1536 | else { /* startp/endp are used by @- @+. */ | |
07bc277f NC |
1537 | RX_OFFS(rx)[0].start = s - truebase; |
1538 | RX_OFFS(rx)[0].end = s - truebase + RX_MINLENRET(rx); | |
14977893 | 1539 | } |
7e1a2c8d DM |
1540 | /* match via INTUIT shouldn't have any captures. Let @-, @+, $^N know */ |
1541 | assert(!RX_NPARENS(rx)); | |
1542 | RX_LASTPAREN(rx) = RX_LASTCLOSEPAREN(rx) = 0; | |
4633a7c4 | 1543 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1544 | RETPUSHYES; |
1545 | ||
1546 | nope: | |
a0d0e21e | 1547 | ret_no: |
d65afb4b | 1548 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e | 1549 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
6136c704 | 1550 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1551 | if (mg) |
565764a8 | 1552 | mg->mg_len = -1; |
a0d0e21e LW |
1553 | } |
1554 | } | |
4633a7c4 | 1555 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1556 | if (gimme == G_ARRAY) |
1557 | RETURN; | |
1558 | RETPUSHNO; | |
1559 | } | |
1560 | ||
1561 | OP * | |
864dbfa3 | 1562 | Perl_do_readline(pTHX) |
a0d0e21e | 1563 | { |
27da23d5 | 1564 | dVAR; dSP; dTARGETSTACKED; |
a0d0e21e LW |
1565 | register SV *sv; |
1566 | STRLEN tmplen = 0; | |
1567 | STRLEN offset; | |
760ac839 | 1568 | PerlIO *fp; |
a3b680e6 AL |
1569 | register IO * const io = GvIO(PL_last_in_gv); |
1570 | register const I32 type = PL_op->op_type; | |
1571 | const I32 gimme = GIMME_V; | |
a0d0e21e | 1572 | |
6136c704 | 1573 | if (io) { |
50db69d8 | 1574 | const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar); |
6136c704 | 1575 | if (mg) { |
50db69d8 | 1576 | Perl_tied_method(aTHX_ "READLINE", SP, MUTABLE_SV(io), mg, gimme, 0); |
6136c704 | 1577 | if (gimme == G_SCALAR) { |
50db69d8 NC |
1578 | SPAGAIN; |
1579 | SvSetSV_nosteal(TARG, TOPs); | |
1580 | SETTARG; | |
6136c704 | 1581 | } |
50db69d8 | 1582 | return NORMAL; |
0b7c7b4f | 1583 | } |
e79b0511 | 1584 | } |
4608196e | 1585 | fp = NULL; |
a0d0e21e LW |
1586 | if (io) { |
1587 | fp = IoIFP(io); | |
1588 | if (!fp) { | |
1589 | if (IoFLAGS(io) & IOf_ARGV) { | |
1590 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1591 | IoLINES(io) = 0; |
3280af22 | 1592 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1593 | IoFLAGS(io) &= ~IOf_START; |
4608196e | 1594 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,NULL); |
76f68e9b | 1595 | sv_setpvs(GvSVn(PL_last_in_gv), "-"); |
3280af22 | 1596 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d GS |
1597 | fp = IoIFP(io); |
1598 | goto have_fp; | |
a0d0e21e LW |
1599 | } |
1600 | } | |
3280af22 | 1601 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1602 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1603 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1604 | } |
1605 | } | |
0d44d22b NC |
1606 | else if (type == OP_GLOB) |
1607 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1608 | } |
1609 | else if (type == OP_GLOB) | |
1610 | SP--; | |
7716c5c5 | 1611 | else if (IoTYPE(io) == IoTYPE_WRONLY) { |
a5390457 | 1612 | report_wrongway_fh(PL_last_in_gv, '>'); |
a00b5bd3 | 1613 | } |
a0d0e21e LW |
1614 | } |
1615 | if (!fp) { | |
041457d9 DM |
1616 | if ((!io || !(IoFLAGS(io) & IOf_START)) |
1617 | && ckWARN2(WARN_GLOB, WARN_CLOSED)) | |
1618 | { | |
3f4520fe | 1619 | if (type == OP_GLOB) |
63922903 | 1620 | Perl_ck_warner_d(aTHX_ packWARN(WARN_GLOB), |
af8c498a GS |
1621 | "glob failed (can't start child: %s)", |
1622 | Strerror(errno)); | |
69282e91 | 1623 | else |
831e4cc3 | 1624 | report_evil_fh(PL_last_in_gv); |
3f4520fe | 1625 | } |
54310121 | 1626 | if (gimme == G_SCALAR) { |
79628082 | 1627 | /* undef TARG, and push that undefined value */ |
ba92458f AE |
1628 | if (type != OP_RCATLINE) { |
1629 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1630 | SvOK_off(TARG); |
ba92458f | 1631 | } |
a0d0e21e LW |
1632 | PUSHTARG; |
1633 | } | |
1634 | RETURN; | |
1635 | } | |
a2008d6d | 1636 | have_fp: |
54310121 | 1637 | if (gimme == G_SCALAR) { |
a0d0e21e | 1638 | sv = TARG; |
0f722b55 RGS |
1639 | if (type == OP_RCATLINE && SvGMAGICAL(sv)) |
1640 | mg_get(sv); | |
48de12d9 RGS |
1641 | if (SvROK(sv)) { |
1642 | if (type == OP_RCATLINE) | |
5668452f | 1643 | SvPV_force_nomg_nolen(sv); |
48de12d9 RGS |
1644 | else |
1645 | sv_unref(sv); | |
1646 | } | |
f7877b28 | 1647 | else if (isGV_with_GP(sv)) { |
5668452f | 1648 | SvPV_force_nomg_nolen(sv); |
f7877b28 | 1649 | } |
862a34c6 | 1650 | SvUPGRADE(sv, SVt_PV); |
a0d0e21e | 1651 | tmplen = SvLEN(sv); /* remember if already alloced */ |
f72e8700 JJ |
1652 | if (!tmplen && !SvREADONLY(sv)) { |
1653 | /* try short-buffering it. Please update t/op/readline.t | |
1654 | * if you change the growth length. | |
1655 | */ | |
1656 | Sv_Grow(sv, 80); | |
1657 | } | |
2b5e58c4 AMS |
1658 | offset = 0; |
1659 | if (type == OP_RCATLINE && SvOK(sv)) { | |
1660 | if (!SvPOK(sv)) { | |
5668452f | 1661 | SvPV_force_nomg_nolen(sv); |
2b5e58c4 | 1662 | } |
a0d0e21e | 1663 | offset = SvCUR(sv); |
2b5e58c4 | 1664 | } |
a0d0e21e | 1665 | } |
54310121 | 1666 | else { |
561b68a9 | 1667 | sv = sv_2mortal(newSV(80)); |
54310121 | 1668 | offset = 0; |
1669 | } | |
fbad3eb5 | 1670 | |
3887d568 AP |
1671 | /* This should not be marked tainted if the fp is marked clean */ |
1672 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1673 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1674 | TAINT; \ | |
1675 | SvTAINTED_on(sv); \ | |
1676 | } | |
1677 | ||
684bef36 | 1678 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1679 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1680 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1681 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1682 | |
a0d0e21e | 1683 | for (;;) { |
09e8efcc | 1684 | PUTBACK; |
fbad3eb5 | 1685 | if (!sv_gets(sv, fp, offset) |
2d726892 TF |
1686 | && (type == OP_GLOB |
1687 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
1688 | || PerlIO_error(fp))) | |
fbad3eb5 | 1689 | { |
760ac839 | 1690 | PerlIO_clearerr(fp); |
a0d0e21e | 1691 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1692 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1693 | if (fp) |
1694 | continue; | |
3280af22 | 1695 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1696 | } |
1697 | else if (type == OP_GLOB) { | |
a2a5de95 NC |
1698 | if (!do_close(PL_last_in_gv, FALSE)) { |
1699 | Perl_ck_warner(aTHX_ packWARN(WARN_GLOB), | |
1700 | "glob failed (child exited with status %d%s)", | |
1701 | (int)(STATUS_CURRENT >> 8), | |
1702 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); | |
4eb79ab5 | 1703 | } |
a0d0e21e | 1704 | } |
54310121 | 1705 | if (gimme == G_SCALAR) { |
ba92458f AE |
1706 | if (type != OP_RCATLINE) { |
1707 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1708 | SvOK_off(TARG); |
ba92458f | 1709 | } |
09e8efcc | 1710 | SPAGAIN; |
a0d0e21e LW |
1711 | PUSHTARG; |
1712 | } | |
3887d568 | 1713 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1714 | RETURN; |
1715 | } | |
3887d568 | 1716 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1717 | IoLINES(io)++; |
b9fee9ba | 1718 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1719 | SvSETMAGIC(sv); |
09e8efcc | 1720 | SPAGAIN; |
a0d0e21e | 1721 | XPUSHs(sv); |
a0d0e21e | 1722 | if (type == OP_GLOB) { |
349d4f2f | 1723 | const char *t1; |
a0d0e21e | 1724 | |
3280af22 | 1725 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
6136c704 | 1726 | char * const tmps = SvEND(sv) - 1; |
aa07b2f6 | 1727 | if (*tmps == *SvPVX_const(PL_rs)) { |
c07a80fd | 1728 | *tmps = '\0'; |
b162af07 | 1729 | SvCUR_set(sv, SvCUR(sv) - 1); |
c07a80fd | 1730 | } |
1731 | } | |
349d4f2f | 1732 | for (t1 = SvPVX_const(sv); *t1; t1++) |
937b2e03 | 1733 | if (!isALNUMC(*t1) && |
349d4f2f | 1734 | strchr("$&*(){}[]'\";\\|?<>~`", *t1)) |
a0d0e21e | 1735 | break; |
349d4f2f | 1736 | if (*t1 && PerlLIO_lstat(SvPVX_const(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1737 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1738 | continue; | |
1739 | } | |
2d79bf7f | 1740 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
d4c19fe8 AL |
1741 | if (ckWARN(WARN_UTF8)) { |
1742 | const U8 * const s = (const U8*)SvPVX_const(sv) + offset; | |
1743 | const STRLEN len = SvCUR(sv) - offset; | |
1744 | const U8 *f; | |
1745 | ||
1746 | if (!is_utf8_string_loc(s, len, &f)) | |
1747 | /* Emulate :encoding(utf8) warning in the same case. */ | |
1748 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
1749 | "utf8 \"\\x%02X\" does not map to Unicode", | |
1750 | f < (U8*)SvEND(sv) ? *f : 0); | |
1751 | } | |
a0d0e21e | 1752 | } |
54310121 | 1753 | if (gimme == G_ARRAY) { |
a0d0e21e | 1754 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1da4ca5f | 1755 | SvPV_shrink_to_cur(sv); |
a0d0e21e | 1756 | } |
561b68a9 | 1757 | sv = sv_2mortal(newSV(80)); |
a0d0e21e LW |
1758 | continue; |
1759 | } | |
54310121 | 1760 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e | 1761 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
d5b5861b NC |
1762 | const STRLEN new_len |
1763 | = SvCUR(sv) < 60 ? 80 : SvCUR(sv)+40; /* allow some slop */ | |
1da4ca5f | 1764 | SvPV_renew(sv, new_len); |
a0d0e21e LW |
1765 | } |
1766 | RETURN; | |
1767 | } | |
1768 | } | |
1769 | ||
a0d0e21e LW |
1770 | PP(pp_helem) |
1771 | { | |
97aff369 | 1772 | dVAR; dSP; |
760ac839 | 1773 | HE* he; |
ae77835f | 1774 | SV **svp; |
c445ea15 | 1775 | SV * const keysv = POPs; |
85fbaab2 | 1776 | HV * const hv = MUTABLE_HV(POPs); |
a3b680e6 AL |
1777 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
1778 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
be6c24e0 | 1779 | SV *sv; |
c158a4fd | 1780 | const U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvSHARED_HASH(keysv) : 0; |
92970b93 | 1781 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
d30e492c | 1782 | bool preeminent = TRUE; |
a0d0e21e | 1783 | |
d4c19fe8 | 1784 | if (SvTYPE(hv) != SVt_PVHV) |
a0d0e21e | 1785 | RETPUSHUNDEF; |
d4c19fe8 | 1786 | |
92970b93 | 1787 | if (localizing) { |
d4c19fe8 AL |
1788 | MAGIC *mg; |
1789 | HV *stash; | |
d30e492c VP |
1790 | |
1791 | /* If we can determine whether the element exist, | |
1792 | * Try to preserve the existenceness of a tied hash | |
1793 | * element by using EXISTS and DELETE if possible. | |
1794 | * Fallback to FETCH and STORE otherwise. */ | |
2c5f48c2 | 1795 | if (SvCANEXISTDELETE(hv)) |
d30e492c | 1796 | preeminent = hv_exists_ent(hv, keysv, 0); |
d4c19fe8 | 1797 | } |
d30e492c | 1798 | |
d4c19fe8 AL |
1799 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
1800 | svp = he ? &HeVAL(he) : NULL; | |
a0d0e21e | 1801 | if (lval) { |
746f6409 | 1802 | if (!svp || !*svp || *svp == &PL_sv_undef) { |
68dc0745 | 1803 | SV* lv; |
1804 | SV* key2; | |
2d8e6c8d | 1805 | if (!defer) { |
be2597df | 1806 | DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv)); |
2d8e6c8d | 1807 | } |
68dc0745 | 1808 | lv = sv_newmortal(); |
1809 | sv_upgrade(lv, SVt_PVLV); | |
1810 | LvTYPE(lv) = 'y'; | |
6136c704 | 1811 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, NULL, 0); |
68dc0745 | 1812 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
b37c2d43 | 1813 | LvTARG(lv) = SvREFCNT_inc_simple(hv); |
68dc0745 | 1814 | LvTARGLEN(lv) = 1; |
1815 | PUSHs(lv); | |
1816 | RETURN; | |
1817 | } | |
92970b93 | 1818 | if (localizing) { |
bfcb3514 | 1819 | if (HvNAME_get(hv) && isGV(*svp)) |
159b6efe | 1820 | save_gp(MUTABLE_GV(*svp), !(PL_op->op_flags & OPf_SPECIAL)); |
47cfc530 VP |
1821 | else if (preeminent) |
1822 | save_helem_flags(hv, keysv, svp, | |
1823 | (PL_op->op_flags & OPf_SPECIAL) ? 0 : SAVEf_SETMAGIC); | |
1824 | else | |
1825 | SAVEHDELETE(hv, keysv); | |
5f05dabc | 1826 | } |
9026059d GG |
1827 | else if (PL_op->op_private & OPpDEREF) { |
1828 | PUSHs(vivify_ref(*svp, PL_op->op_private & OPpDEREF)); | |
1829 | RETURN; | |
1830 | } | |
a0d0e21e | 1831 | } |
746f6409 | 1832 | sv = (svp && *svp ? *svp : &PL_sv_undef); |
fd69380d DM |
1833 | /* Originally this did a conditional C<sv = sv_mortalcopy(sv)>; this |
1834 | * was to make C<local $tied{foo} = $tied{foo}> possible. | |
1835 | * However, it seems no longer to be needed for that purpose, and | |
1836 | * introduced a new bug: stuff like C<while ($hash{taintedval} =~ /.../g> | |
1837 | * would loop endlessly since the pos magic is getting set on the | |
1838 | * mortal copy and lost. However, the copy has the effect of | |
1839 | * triggering the get magic, and losing it altogether made things like | |
1840 | * c<$tied{foo};> in void context no longer do get magic, which some | |
1841 | * code relied on. Also, delayed triggering of magic on @+ and friends | |
1842 | * meant the original regex may be out of scope by now. So as a | |
1843 | * compromise, do the get magic here. (The MGf_GSKIP flag will stop it | |
1844 | * being called too many times). */ | |
39cf747a | 1845 | if (!lval && SvRMAGICAL(hv) && SvGMAGICAL(sv)) |
fd69380d | 1846 | mg_get(sv); |
be6c24e0 | 1847 | PUSHs(sv); |
a0d0e21e LW |
1848 | RETURN; |
1849 | } | |
1850 | ||
a0d0e21e LW |
1851 | PP(pp_iter) |
1852 | { | |
97aff369 | 1853 | dVAR; dSP; |
c09156bb | 1854 | register PERL_CONTEXT *cx; |
dc09a129 | 1855 | SV *sv, *oldsv; |
1d7c1841 | 1856 | SV **itersvp; |
d01136d6 BS |
1857 | AV *av = NULL; /* used for LOOP_FOR on arrays and the stack */ |
1858 | bool av_is_stack = FALSE; | |
a0d0e21e | 1859 | |
924508f0 | 1860 | EXTEND(SP, 1); |
a0d0e21e | 1861 | cx = &cxstack[cxstack_ix]; |
3b719c58 | 1862 | if (!CxTYPE_is_LOOP(cx)) |
5637ef5b | 1863 | DIE(aTHX_ "panic: pp_iter, type=%u", CxTYPE(cx)); |
a0d0e21e | 1864 | |
1d7c1841 | 1865 | itersvp = CxITERVAR(cx); |
d01136d6 | 1866 | if (CxTYPE(cx) == CXt_LOOP_LAZYSV) { |
89ea2908 | 1867 | /* string increment */ |
d01136d6 BS |
1868 | SV* cur = cx->blk_loop.state_u.lazysv.cur; |
1869 | SV *end = cx->blk_loop.state_u.lazysv.end; | |
267cc4a8 NC |
1870 | /* If the maximum is !SvOK(), pp_enteriter substitutes PL_sv_no. |
1871 | It has SvPVX of "" and SvCUR of 0, which is what we want. */ | |
4fe3f0fa | 1872 | STRLEN maxlen = 0; |
d01136d6 | 1873 | const char *max = SvPV_const(end, maxlen); |
89ea2908 | 1874 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
1d7c1841 | 1875 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1876 | /* safe to reuse old SV */ |
1d7c1841 | 1877 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1878 | } |
1c846c1f | 1879 | else |
eaa5c2d6 GA |
1880 | { |
1881 | /* we need a fresh SV every time so that loop body sees a | |
1882 | * completely new SV for closures/references to work as | |
1883 | * they used to */ | |
dc09a129 | 1884 | oldsv = *itersvp; |
1d7c1841 | 1885 | *itersvp = newSVsv(cur); |
dc09a129 | 1886 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1887 | } |
aa07b2f6 | 1888 | if (strEQ(SvPVX_const(cur), max)) |
89ea2908 GA |
1889 | sv_setiv(cur, 0); /* terminate next time */ |
1890 | else | |
1891 | sv_inc(cur); | |
1892 | RETPUSHYES; | |
1893 | } | |
1894 | RETPUSHNO; | |
d01136d6 BS |
1895 | } |
1896 | else if (CxTYPE(cx) == CXt_LOOP_LAZYIV) { | |
89ea2908 | 1897 | /* integer increment */ |
d01136d6 | 1898 | if (cx->blk_loop.state_u.lazyiv.cur > cx->blk_loop.state_u.lazyiv.end) |
89ea2908 | 1899 | RETPUSHNO; |
7f61b687 | 1900 | |
3db8f154 | 1901 | /* don't risk potential race */ |
1d7c1841 | 1902 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1903 | /* safe to reuse old SV */ |
cdc1aa42 | 1904 | sv_setiv(*itersvp, cx->blk_loop.state_u.lazyiv.cur); |
eaa5c2d6 | 1905 | } |
1c846c1f | 1906 | else |
eaa5c2d6 GA |
1907 | { |
1908 | /* we need a fresh SV every time so that loop body sees a | |
1909 | * completely new SV for closures/references to work as they | |
1910 | * used to */ | |
dc09a129 | 1911 | oldsv = *itersvp; |
cdc1aa42 | 1912 | *itersvp = newSViv(cx->blk_loop.state_u.lazyiv.cur); |
dc09a129 | 1913 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1914 | } |
a2309040 | 1915 | |
cdc1aa42 NC |
1916 | if (cx->blk_loop.state_u.lazyiv.cur == IV_MAX) { |
1917 | /* Handle end of range at IV_MAX */ | |
1918 | cx->blk_loop.state_u.lazyiv.end = IV_MIN; | |
1919 | } else | |
1920 | ++cx->blk_loop.state_u.lazyiv.cur; | |
a2309040 | 1921 | |
89ea2908 GA |
1922 | RETPUSHYES; |
1923 | } | |
1924 | ||
1925 | /* iterate array */ | |
d01136d6 BS |
1926 | assert(CxTYPE(cx) == CXt_LOOP_FOR); |
1927 | av = cx->blk_loop.state_u.ary.ary; | |
1928 | if (!av) { | |
1929 | av_is_stack = TRUE; | |
1930 | av = PL_curstack; | |
1931 | } | |
ef3e5ea9 | 1932 | if (PL_op->op_private & OPpITER_REVERSED) { |
d01136d6 BS |
1933 | if (cx->blk_loop.state_u.ary.ix <= (av_is_stack |
1934 | ? cx->blk_loop.resetsp + 1 : 0)) | |
ef3e5ea9 | 1935 | RETPUSHNO; |
a0d0e21e | 1936 | |
ef3e5ea9 | 1937 | if (SvMAGICAL(av) || AvREIFY(av)) { |
d01136d6 | 1938 | SV * const * const svp = av_fetch(av, --cx->blk_loop.state_u.ary.ix, FALSE); |
a0714e2c | 1939 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
1940 | } |
1941 | else { | |
d01136d6 | 1942 | sv = AvARRAY(av)[--cx->blk_loop.state_u.ary.ix]; |
ef3e5ea9 | 1943 | } |
d42935ef JH |
1944 | } |
1945 | else { | |
d01136d6 | 1946 | if (cx->blk_loop.state_u.ary.ix >= (av_is_stack ? cx->blk_oldsp : |
ef3e5ea9 NC |
1947 | AvFILL(av))) |
1948 | RETPUSHNO; | |
1949 | ||
1950 | if (SvMAGICAL(av) || AvREIFY(av)) { | |
d01136d6 | 1951 | SV * const * const svp = av_fetch(av, ++cx->blk_loop.state_u.ary.ix, FALSE); |
a0714e2c | 1952 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
1953 | } |
1954 | else { | |
d01136d6 | 1955 | sv = AvARRAY(av)[++cx->blk_loop.state_u.ary.ix]; |
ef3e5ea9 | 1956 | } |
d42935ef | 1957 | } |
ef3e5ea9 | 1958 | |
0565a181 | 1959 | if (sv && SvIS_FREED(sv)) { |
a0714e2c | 1960 | *itersvp = NULL; |
b6c83531 | 1961 | Perl_croak(aTHX_ "Use of freed value in iteration"); |
cccede53 DM |
1962 | } |
1963 | ||
d01136d6 | 1964 | if (sv) { |
a0d0e21e | 1965 | SvTEMP_off(sv); |
d01136d6 BS |
1966 | SvREFCNT_inc_simple_void_NN(sv); |
1967 | } | |
a0d0e21e | 1968 | else |
3280af22 | 1969 | sv = &PL_sv_undef; |
d01136d6 BS |
1970 | if (!av_is_stack && sv == &PL_sv_undef) { |
1971 | SV *lv = newSV_type(SVt_PVLV); | |
1972 | LvTYPE(lv) = 'y'; | |
1973 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); | |
b37c2d43 | 1974 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
d01136d6 | 1975 | LvTARGOFF(lv) = cx->blk_loop.state_u.ary.ix; |
42718184 | 1976 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
d01136d6 | 1977 | sv = lv; |
5f05dabc | 1978 | } |
a0d0e21e | 1979 | |
dc09a129 | 1980 | oldsv = *itersvp; |
d01136d6 | 1981 | *itersvp = sv; |
dc09a129 DM |
1982 | SvREFCNT_dec(oldsv); |
1983 | ||
a0d0e21e LW |
1984 | RETPUSHYES; |
1985 | } | |
1986 | ||
ef07e810 DM |
1987 | /* |
1988 | A description of how taint works in pattern matching and substitution. | |
1989 | ||
4e19c54b | 1990 | While the pattern is being assembled/concatenated and then compiled, |
0ab462a6 DM |
1991 | PL_tainted will get set if any component of the pattern is tainted, e.g. |
1992 | /.*$tainted/. At the end of pattern compilation, the RXf_TAINTED flag | |
1993 | is set on the pattern if PL_tainted is set. | |
ef07e810 | 1994 | |
0ab462a6 DM |
1995 | When the pattern is copied, e.g. $r = qr/..../, the SV holding the ref to |
1996 | the pattern is marked as tainted. This means that subsequent usage, such | |
1997 | as /x$r/, will set PL_tainted, and thus RXf_TAINTED, on the new pattern too. | |
ef07e810 DM |
1998 | |
1999 | During execution of a pattern, locale-variant ops such as ALNUML set the | |
2000 | local flag RF_tainted. At the end of execution, the engine sets the | |
0ab462a6 DM |
2001 | RXf_TAINTED_SEEN on the pattern if RF_tainted got set, or clears it |
2002 | otherwise. | |
ef07e810 DM |
2003 | |
2004 | In addition, RXf_TAINTED_SEEN is used post-execution by the get magic code | |
2005 | of $1 et al to indicate whether the returned value should be tainted. | |
2006 | It is the responsibility of the caller of the pattern (i.e. pp_match, | |
2007 | pp_subst etc) to set this flag for any other circumstances where $1 needs | |
2008 | to be tainted. | |
2009 | ||
2010 | The taint behaviour of pp_subst (and pp_substcont) is quite complex. | |
2011 | ||
2012 | There are three possible sources of taint | |
2013 | * the source string | |
2014 | * the pattern (both compile- and run-time, RXf_TAINTED / RXf_TAINTED_SEEN) | |
2015 | * the replacement string (or expression under /e) | |
2016 | ||
2017 | There are four destinations of taint and they are affected by the sources | |
2018 | according to the rules below: | |
2019 | ||
2020 | * the return value (not including /r): | |
2021 | tainted by the source string and pattern, but only for the | |
2022 | number-of-iterations case; boolean returns aren't tainted; | |
2023 | * the modified string (or modified copy under /r): | |
2024 | tainted by the source string, pattern, and replacement strings; | |
2025 | * $1 et al: | |
2026 | tainted by the pattern, and under 'use re "taint"', by the source | |
2027 | string too; | |
2028 | * PL_taint - i.e. whether subsequent code (e.g. in a /e block) is tainted: | |
2029 | should always be unset before executing subsequent code. | |
2030 | ||
2031 | The overall action of pp_subst is: | |
2032 | ||
2033 | * at the start, set bits in rxtainted indicating the taint status of | |
2034 | the various sources. | |
2035 | ||
2036 | * After each pattern execution, update the SUBST_TAINT_PAT bit in | |
2037 | rxtainted if RXf_TAINTED_SEEN has been set, to indicate that the | |
2038 | pattern has subsequently become tainted via locale ops. | |
2039 | ||
2040 | * If control is being passed to pp_substcont to execute a /e block, | |
2041 | save rxtainted in the CXt_SUBST block, for future use by | |
2042 | pp_substcont. | |
2043 | ||
2044 | * Whenever control is being returned to perl code (either by falling | |
2045 | off the "end" of pp_subst/pp_substcont, or by entering a /e block), | |
2046 | use the flag bits in rxtainted to make all the appropriate types of | |
0ab462a6 DM |
2047 | destination taint visible; e.g. set RXf_TAINTED_SEEN so that $1 |
2048 | et al will appear tainted. | |
ef07e810 DM |
2049 | |
2050 | pp_match is just a simpler version of the above. | |
2051 | ||
2052 | */ | |
2053 | ||
a0d0e21e LW |
2054 | PP(pp_subst) |
2055 | { | |
97aff369 | 2056 | dVAR; dSP; dTARG; |
a0d0e21e LW |
2057 | register PMOP *pm = cPMOP; |
2058 | PMOP *rpm = pm; | |
a0d0e21e LW |
2059 | register char *s; |
2060 | char *strend; | |
2061 | register char *m; | |
5c144d81 | 2062 | const char *c; |
a0d0e21e LW |
2063 | register char *d; |
2064 | STRLEN clen; | |
2065 | I32 iters = 0; | |
2066 | I32 maxiters; | |
2067 | register I32 i; | |
2068 | bool once; | |
ef07e810 DM |
2069 | U8 rxtainted = 0; /* holds various SUBST_TAINT_* flag bits. |
2070 | See "how taint works" above */ | |
a0d0e21e | 2071 | char *orig; |
1ed74d04 | 2072 | U8 r_flags; |
aaa362c4 | 2073 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
2074 | STRLEN len; |
2075 | int force_on_match = 0; | |
0bcc34c2 | 2076 | const I32 oldsave = PL_savestack_ix; |
792b2c16 | 2077 | STRLEN slen; |
f272994b | 2078 | bool doutf8 = FALSE; |
f8c7b90f | 2079 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2080 | bool is_cow; |
2081 | #endif | |
a0714e2c | 2082 | SV *nsv = NULL; |
b770e143 NC |
2083 | /* known replacement string? */ |
2084 | register SV *dstr = (pm->op_pmflags & PMf_CONST) ? POPs : NULL; | |
a0d0e21e | 2085 | |
f410a211 NC |
2086 | PERL_ASYNC_CHECK(); |
2087 | ||
533c011a | 2088 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 2089 | TARG = POPs; |
59f00321 RGS |
2090 | else if (PL_op->op_private & OPpTARGET_MY) |
2091 | GETTARGET; | |
a0d0e21e | 2092 | else { |
54b9620d | 2093 | TARG = DEFSV; |
a0d0e21e | 2094 | EXTEND(SP,1); |
1c846c1f | 2095 | } |
d9f424b2 | 2096 | |
f8c7b90f | 2097 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2098 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, |
2099 | because they make integers such as 256 "false". */ | |
2100 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
2101 | #else | |
765f542d NC |
2102 | if (SvIsCOW(TARG)) |
2103 | sv_force_normal_flags(TARG,0); | |
ed252734 | 2104 | #endif |
8ca8a454 | 2105 | if (!(rpm->op_pmflags & PMf_NONDESTRUCT) |
f8c7b90f | 2106 | #ifdef PERL_OLD_COPY_ON_WRITE |
8ca8a454 | 2107 | && !is_cow |
ed252734 | 2108 | #endif |
8ca8a454 NC |
2109 | && (SvREADONLY(TARG) |
2110 | || ( ((SvTYPE(TARG) == SVt_PVGV && isGV_with_GP(TARG)) | |
2111 | || SvTYPE(TARG) > SVt_PVLV) | |
2112 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) | |
6ad8f254 | 2113 | Perl_croak_no_modify(aTHX); |
8ec5e241 NIS |
2114 | PUTBACK; |
2115 | ||
3e462cdc | 2116 | setup_match: |
d5263905 | 2117 | s = SvPV_mutable(TARG, len); |
68dc0745 | 2118 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 2119 | force_on_match = 1; |
20be6587 DM |
2120 | |
2121 | /* only replace once? */ | |
2122 | once = !(rpm->op_pmflags & PMf_GLOBAL); | |
2123 | ||
ef07e810 | 2124 | /* See "how taint works" above */ |
20be6587 DM |
2125 | if (PL_tainting) { |
2126 | rxtainted = ( | |
2127 | (SvTAINTED(TARG) ? SUBST_TAINT_STR : 0) | |
2128 | | ((RX_EXTFLAGS(rx) & RXf_TAINTED) ? SUBST_TAINT_PAT : 0) | |
2129 | | ((pm->op_pmflags & PMf_RETAINT) ? SUBST_TAINT_RETAINT : 0) | |
2130 | | ((once && !(rpm->op_pmflags & PMf_NONDESTRUCT)) | |
2131 | ? SUBST_TAINT_BOOLRET : 0)); | |
2132 | TAINT_NOT; | |
2133 | } | |
a12c0f56 | 2134 | |
a30b2f1f | 2135 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 2136 | |
a0d0e21e LW |
2137 | force_it: |
2138 | if (!pm || !s) | |
5637ef5b | 2139 | DIE(aTHX_ "panic: pp_subst, pm=%p, s=%p", pm, s); |
a0d0e21e LW |
2140 | |
2141 | strend = s + len; | |
a30b2f1f | 2142 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
2143 | maxiters = 2 * slen + 10; /* We can match twice at each |
2144 | position, once with zero-length, | |
2145 | second time with non-zero. */ | |
a0d0e21e | 2146 | |
220fc49f | 2147 | if (!RX_PRELEN(rx) && PL_curpm) { |
3280af22 | 2148 | pm = PL_curpm; |
aaa362c4 | 2149 | rx = PM_GETRE(pm); |
a0d0e21e | 2150 | } |
07bc277f NC |
2151 | r_flags = (RX_NPARENS(rx) || SvTEMP(TARG) || PL_sawampersand |
2152 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY)) ) | |
ed252734 | 2153 | ? REXEC_COPY_STR : 0; |
7fba1cd6 | 2154 | |
a0d0e21e | 2155 | orig = m = s; |
07bc277f | 2156 | if (RX_EXTFLAGS(rx) & RXf_USE_INTUIT) { |
ee0b7718 | 2157 | PL_bostr = orig; |
f9f4320a | 2158 | s = CALLREG_INTUIT_START(rx, TARG, s, strend, r_flags, NULL); |
f722798b IZ |
2159 | |
2160 | if (!s) | |
df34c13a | 2161 | goto ret_no; |
f722798b | 2162 | /* How to do it in subst? */ |
07bc277f | 2163 | /* if ( (RX_EXTFLAGS(rx) & RXf_CHECK_ALL) |
1c846c1f | 2164 | && !PL_sawampersand |
a91cc451 | 2165 | && !(RX_EXTFLAGS(rx) & RXf_KEEPCOPY)) |
f722798b IZ |
2166 | goto yup; |
2167 | */ | |
a0d0e21e | 2168 | } |
71be2cbc | 2169 | |
8b64c330 DM |
2170 | if (!CALLREGEXEC(rx, s, strend, orig, 0, TARG, NULL, |
2171 | r_flags | REXEC_CHECKED)) | |
2172 | { | |
5e79dfb9 DM |
2173 | ret_no: |
2174 | SPAGAIN; | |
2175 | PUSHs(rpm->op_pmflags & PMf_NONDESTRUCT ? TARG : &PL_sv_no); | |
2176 | LEAVE_SCOPE(oldsave); | |
2177 | RETURN; | |
2178 | } | |
2179 | ||
71be2cbc | 2180 | /* known replacement string? */ |
f272994b | 2181 | if (dstr) { |
20be6587 DM |
2182 | if (SvTAINTED(dstr)) |
2183 | rxtainted |= SUBST_TAINT_REPL; | |
3e462cdc KW |
2184 | |
2185 | /* Upgrade the source if the replacement is utf8 but the source is not, | |
2186 | * but only if it matched; see | |
2187 | * http://www.nntp.perl.org/group/perl.perl5.porters/2010/04/msg158809.html | |
2188 | */ | |
5e79dfb9 | 2189 | if (DO_UTF8(dstr) && ! DO_UTF8(TARG)) { |
c95ca9b8 DM |
2190 | char * const orig_pvx = SvPVX(TARG); |
2191 | const STRLEN new_len = sv_utf8_upgrade_nomg(TARG); | |
3e462cdc KW |
2192 | |
2193 | /* If the lengths are the same, the pattern contains only | |
2194 | * invariants, can keep going; otherwise, various internal markers | |
2195 | * could be off, so redo */ | |
c95ca9b8 | 2196 | if (new_len != len || orig_pvx != SvPVX(TARG)) { |
3e462cdc KW |
2197 | goto setup_match; |
2198 | } | |
2199 | } | |
2200 | ||
8514a05a JH |
2201 | /* replacement needing upgrading? */ |
2202 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 2203 | nsv = sv_newmortal(); |
4a176938 | 2204 | SvSetSV(nsv, dstr); |
8514a05a JH |
2205 | if (PL_encoding) |
2206 | sv_recode_to_utf8(nsv, PL_encoding); | |
2207 | else | |
2208 | sv_utf8_upgrade(nsv); | |
5c144d81 | 2209 | c = SvPV_const(nsv, clen); |
4a176938 JH |
2210 | doutf8 = TRUE; |
2211 | } | |
2212 | else { | |
5c144d81 | 2213 | c = SvPV_const(dstr, clen); |
4a176938 | 2214 | doutf8 = DO_UTF8(dstr); |
8514a05a | 2215 | } |
f272994b A |
2216 | } |
2217 | else { | |
6136c704 | 2218 | c = NULL; |
f272994b A |
2219 | doutf8 = FALSE; |
2220 | } | |
2221 | ||
71be2cbc | 2222 | /* can do inplace substitution? */ |
ed252734 | 2223 | if (c |
f8c7b90f | 2224 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2225 | && !is_cow |
2226 | #endif | |
07bc277f NC |
2227 | && (I32)clen <= RX_MINLENRET(rx) && (once || !(r_flags & REXEC_COPY_STR)) |
2228 | && !(RX_EXTFLAGS(rx) & RXf_LOOKBEHIND_SEEN) | |
8ca8a454 NC |
2229 | && (!doutf8 || SvUTF8(TARG)) |
2230 | && !(rpm->op_pmflags & PMf_NONDESTRUCT)) | |
8b030b38 | 2231 | { |
ec911639 | 2232 | |
f8c7b90f | 2233 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2234 | if (SvIsCOW(TARG)) { |
2235 | assert (!force_on_match); | |
2236 | goto have_a_cow; | |
2237 | } | |
2238 | #endif | |
71be2cbc | 2239 | if (force_on_match) { |
2240 | force_on_match = 0; | |
2241 | s = SvPV_force(TARG, len); | |
2242 | goto force_it; | |
2243 | } | |
71be2cbc | 2244 | d = s; |
3280af22 | 2245 | PL_curpm = pm; |
71be2cbc | 2246 | if (once) { |
20be6587 DM |
2247 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
2248 | rxtainted |= SUBST_TAINT_PAT; | |
07bc277f NC |
2249 | m = orig + RX_OFFS(rx)[0].start; |
2250 | d = orig + RX_OFFS(rx)[0].end; | |
71be2cbc | 2251 | s = orig; |
2252 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2253 | if (clen) { | |
2254 | Copy(c, m, clen, char); | |
2255 | m += clen; | |
a0d0e21e | 2256 | } |
71be2cbc | 2257 | i = strend - d; |
2258 | if (i > 0) { | |
2259 | Move(d, m, i, char); | |
2260 | m += i; | |
a0d0e21e | 2261 | } |
71be2cbc | 2262 | *m = '\0'; |
2263 | SvCUR_set(TARG, m - s); | |
2264 | } | |
155aba94 | 2265 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc | 2266 | d -= clen; |
2267 | m = d; | |
0d3c21b0 | 2268 | Move(s, d - i, i, char); |
71be2cbc | 2269 | sv_chop(TARG, d-i); |
71be2cbc | 2270 | if (clen) |
2271 | Copy(c, m, clen, char); | |
2272 | } | |
2273 | else if (clen) { | |
2274 | d -= clen; | |
2275 | sv_chop(TARG, d); | |
2276 | Copy(c, d, clen, char); | |
2277 | } | |
2278 | else { | |
2279 | sv_chop(TARG, d); | |
2280 | } | |
8ec5e241 | 2281 | SPAGAIN; |
8ca8a454 | 2282 | PUSHs(&PL_sv_yes); |
71be2cbc | 2283 | } |
2284 | else { | |
71be2cbc | 2285 | do { |
2286 | if (iters++ > maxiters) | |
cea2e8a9 | 2287 | DIE(aTHX_ "Substitution loop"); |
20be6587 DM |
2288 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
2289 | rxtainted |= SUBST_TAINT_PAT; | |
07bc277f | 2290 | m = RX_OFFS(rx)[0].start + orig; |
155aba94 | 2291 | if ((i = m - s)) { |
71be2cbc | 2292 | if (s != d) |
2293 | Move(s, d, i, char); | |
2294 | d += i; | |
a0d0e21e | 2295 | } |
71be2cbc | 2296 | if (clen) { |
2297 | Copy(c, d, clen, char); | |
2298 | d += clen; | |
2299 | } | |
07bc277f | 2300 | s = RX_OFFS(rx)[0].end + orig; |
f9f4320a | 2301 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
f722798b IZ |
2302 | TARG, NULL, |
2303 | /* don't match same null twice */ | |
2304 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 2305 | if (s != d) { |
2306 | i = strend - s; | |
aa07b2f6 | 2307 | SvCUR_set(TARG, d - SvPVX_const(TARG) + i); |
71be2cbc | 2308 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e | 2309 | } |
8ec5e241 | 2310 | SPAGAIN; |
8ca8a454 | 2311 | mPUSHi((I32)iters); |
a0d0e21e LW |
2312 | } |
2313 | } | |
ff6e92e8 | 2314 | else { |
a0d0e21e LW |
2315 | if (force_on_match) { |
2316 | force_on_match = 0; | |
0c1438a1 NC |
2317 | if (rpm->op_pmflags & PMf_NONDESTRUCT) { |
2318 | /* I feel that it should be possible to avoid this mortal copy | |
2319 | given that the code below copies into a new destination. | |
2320 | However, I suspect it isn't worth the complexity of | |
2321 | unravelling the C<goto force_it> for the small number of | |
2322 | cases where it would be viable to drop into the copy code. */ | |
2323 | TARG = sv_2mortal(newSVsv(TARG)); | |
2324 | } | |
a0d0e21e LW |
2325 | s = SvPV_force(TARG, len); |
2326 | goto force_it; | |
2327 | } | |
f8c7b90f | 2328 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2329 | have_a_cow: |
2330 | #endif | |
20be6587 DM |
2331 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
2332 | rxtainted |= SUBST_TAINT_PAT; | |
815dd406 | 2333 | dstr = newSVpvn_flags(m, s-m, SVs_TEMP | (DO_UTF8(TARG) ? SVf_UTF8 : 0)); |
3280af22 | 2334 | PL_curpm = pm; |
a0d0e21e | 2335 | if (!c) { |
c09156bb | 2336 | register PERL_CONTEXT *cx; |
8ec5e241 | 2337 | SPAGAIN; |
20be6587 DM |
2338 | /* note that a whole bunch of local vars are saved here for |
2339 | * use by pp_substcont: here's a list of them in case you're | |
2340 | * searching for places in this sub that uses a particular var: | |
2341 | * iters maxiters r_flags oldsave rxtainted orig dstr targ | |
2342 | * s m strend rx once */ | |
a0d0e21e | 2343 | PUSHSUBST(cx); |
20e98b0f | 2344 | RETURNOP(cPMOP->op_pmreplrootu.op_pmreplroot); |
a0d0e21e | 2345 | } |
cf93c79d | 2346 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2347 | do { |
2348 | if (iters++ > maxiters) | |
cea2e8a9 | 2349 | DIE(aTHX_ "Substitution loop"); |
20be6587 DM |
2350 | if (RX_MATCH_TAINTED(rx)) |
2351 | rxtainted |= SUBST_TAINT_PAT; | |
07bc277f | 2352 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
a0d0e21e LW |
2353 | m = s; |
2354 | s = orig; | |
07bc277f | 2355 | orig = RX_SUBBEG(rx); |
a0d0e21e LW |
2356 | s = orig + (m - s); |
2357 | strend = s + (strend - m); | |
2358 | } | |
07bc277f | 2359 | m = RX_OFFS(rx)[0].start + orig; |
db79b45b JH |
2360 | if (doutf8 && !SvUTF8(dstr)) |
2361 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); | |
2362 | else | |
2363 | sv_catpvn(dstr, s, m-s); | |
07bc277f | 2364 | s = RX_OFFS(rx)[0].end + orig; |
a0d0e21e LW |
2365 | if (clen) |
2366 | sv_catpvn(dstr, c, clen); | |
2367 | if (once) | |
2368 | break; | |
f9f4320a | 2369 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
ffc61ed2 | 2370 | TARG, NULL, r_flags)); |
db79b45b JH |
2371 | if (doutf8 && !DO_UTF8(TARG)) |
2372 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); | |
89afcb60 A |
2373 | else |
2374 | sv_catpvn(dstr, s, strend - s); | |
748a9306 | 2375 | |
8ca8a454 NC |
2376 | if (rpm->op_pmflags & PMf_NONDESTRUCT) { |
2377 | /* From here on down we're using the copy, and leaving the original | |
2378 | untouched. */ | |
2379 | TARG = dstr; | |
2380 | SPAGAIN; | |
2381 | PUSHs(dstr); | |
2382 | } else { | |
f8c7b90f | 2383 | #ifdef PERL_OLD_COPY_ON_WRITE |
8ca8a454 NC |
2384 | /* The match may make the string COW. If so, brilliant, because |
2385 | that's just saved us one malloc, copy and free - the regexp has | |
2386 | donated the old buffer, and we malloc an entirely new one, rather | |
2387 | than the regexp malloc()ing a buffer and copying our original, | |
2388 | only for us to throw it away here during the substitution. */ | |
2389 | if (SvIsCOW(TARG)) { | |
2390 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
2391 | } else | |
ed252734 | 2392 | #endif |
8ca8a454 NC |
2393 | { |
2394 | SvPV_free(TARG); | |
2395 | } | |
2396 | SvPV_set(TARG, SvPVX(dstr)); | |
2397 | SvCUR_set(TARG, SvCUR(dstr)); | |
2398 | SvLEN_set(TARG, SvLEN(dstr)); | |
2399 | doutf8 |= DO_UTF8(dstr); | |
2400 | SvPV_set(dstr, NULL); | |
748a9306 | 2401 | |
8ca8a454 | 2402 | SPAGAIN; |
4f4d7508 | 2403 | mPUSHi((I32)iters); |
8ca8a454 NC |
2404 | } |
2405 | } | |
2406 | ||
2407 | if (!(rpm->op_pmflags & PMf_NONDESTRUCT)) { | |
2408 | (void)SvPOK_only_UTF8(TARG); | |
2409 | if (doutf8) | |
2410 | SvUTF8_on(TARG); | |
a0d0e21e | 2411 | } |
20be6587 | 2412 | |
ef07e810 | 2413 | /* See "how taint works" above */ |
20be6587 DM |
2414 | if (PL_tainting) { |
2415 | if ((rxtainted & SUBST_TAINT_PAT) || | |
2416 | ((rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) == | |
2417 | (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
2418 | ) | |
2419 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
2420 | ||
2421 | if (!(rxtainted & SUBST_TAINT_BOOLRET) | |
2422 | && (rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT)) | |
2423 | ) | |
2424 | SvTAINTED_on(TOPs); /* taint return value */ | |
2425 | else | |
2426 | SvTAINTED_off(TOPs); /* may have got tainted earlier */ | |
2427 | ||
2428 | /* needed for mg_set below */ | |
2429 | PL_tainted = | |
2430 | cBOOL(rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL)); | |
2431 | SvTAINT(TARG); | |
2432 | } | |
2433 | SvSETMAGIC(TARG); /* PL_tainted must be correctly set for this mg_set */ | |
2434 | TAINT_NOT; | |
f1a76097 DM |
2435 | LEAVE_SCOPE(oldsave); |
2436 | RETURN; | |
a0d0e21e LW |
2437 | } |
2438 | ||
2439 | PP(pp_grepwhile) | |
2440 | { | |
27da23d5 | 2441 | dVAR; dSP; |
a0d0e21e LW |
2442 | |
2443 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2444 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2445 | ++*PL_markstack_ptr; | |
b2a2a901 | 2446 | FREETMPS; |
d343c3ef | 2447 | LEAVE_with_name("grep_item"); /* exit inner scope */ |
a0d0e21e LW |
2448 | |
2449 | /* All done yet? */ | |
3280af22 | 2450 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2451 | I32 items; |
c4420975 | 2452 | const I32 gimme = GIMME_V; |
a0d0e21e | 2453 | |
d343c3ef | 2454 | LEAVE_with_name("grep"); /* exit outer scope */ |
a0d0e21e | 2455 | (void)POPMARK; /* pop src */ |
3280af22 | 2456 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2457 | (void)POPMARK; /* pop dst */ |
3280af22 | 2458 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2459 | if (gimme == G_SCALAR) { |
7cc47870 | 2460 | if (PL_op->op_private & OPpGREP_LEX) { |
c4420975 | 2461 | SV* const sv = sv_newmortal(); |
7cc47870 RGS |
2462 | sv_setiv(sv, items); |
2463 | PUSHs(sv); | |
2464 | } | |
2465 | else { | |
2466 | dTARGET; | |
2467 | XPUSHi(items); | |
2468 | } | |
a0d0e21e | 2469 | } |
54310121 | 2470 | else if (gimme == G_ARRAY) |
2471 | SP += items; | |
a0d0e21e LW |
2472 | RETURN; |
2473 | } | |
2474 | else { | |
2475 | SV *src; | |
2476 | ||
d343c3ef | 2477 | ENTER_with_name("grep_item"); /* enter inner scope */ |
1d7c1841 | 2478 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2479 | |
3280af22 | 2480 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2481 | SvTEMP_off(src); |
59f00321 RGS |
2482 | if (PL_op->op_private & OPpGREP_LEX) |
2483 | PAD_SVl(PL_op->op_targ) = src; | |
2484 | else | |
414bf5ae | 2485 | DEFSV_set(src); |
a0d0e21e LW |
2486 | |
2487 | RETURNOP(cLOGOP->op_other); | |
2488 | } | |
2489 | } | |
2490 | ||
2491 | PP(pp_leavesub) | |
2492 | { | |
27da23d5 | 2493 | dVAR; dSP; |
a0d0e21e LW |
2494 | SV **mark; |
2495 | SV **newsp; | |
2496 | PMOP *newpm; | |
2497 | I32 gimme; | |
c09156bb | 2498 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2499 | SV *sv; |
a0d0e21e | 2500 | |
9850bf21 RH |
2501 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2502 | return 0; | |
2503 | ||
a0d0e21e | 2504 | POPBLOCK(cx,newpm); |
5dd42e15 | 2505 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2506 | |
a1f49e72 | 2507 | TAINT_NOT; |
a0d0e21e LW |
2508 | if (gimme == G_SCALAR) { |
2509 | MARK = newsp + 1; | |
a29cdaf0 | 2510 | if (MARK <= SP) { |
a8bba7fa | 2511 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
6f48390a FC |
2512 | if (SvTEMP(TOPs) && SvREFCNT(TOPs) == 1 |
2513 | && !SvMAGICAL(TOPs)) { | |
a29cdaf0 IZ |
2514 | *MARK = SvREFCNT_inc(TOPs); |
2515 | FREETMPS; | |
2516 | sv_2mortal(*MARK); | |
cd06dffe GS |
2517 | } |
2518 | else { | |
959e3673 | 2519 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2520 | FREETMPS; |
959e3673 GS |
2521 | *MARK = sv_mortalcopy(sv); |
2522 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2523 | } |
cd06dffe | 2524 | } |
6f48390a FC |
2525 | else if (SvTEMP(TOPs) && SvREFCNT(TOPs) == 1 |
2526 | && !SvMAGICAL(TOPs)) { | |
767eda44 | 2527 | *MARK = TOPs; |
767eda44 | 2528 | } |
cd06dffe | 2529 | else |
767eda44 | 2530 | *MARK = sv_mortalcopy(TOPs); |
cd06dffe GS |
2531 | } |
2532 | else { | |
f86702cc | 2533 | MEXTEND(MARK, 0); |
3280af22 | 2534 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2535 | } |
2536 | SP = MARK; | |
2537 | } | |
54310121 | 2538 | else if (gimme == G_ARRAY) { |
f86702cc | 2539 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
6f48390a FC |
2540 | if (!SvTEMP(*MARK) || SvREFCNT(*MARK) != 1 |
2541 | || SvMAGICAL(*MARK)) { | |
f86702cc | 2542 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2543 | TAINT_NOT; /* Each item is independent */ |
2544 | } | |
f86702cc | 2545 | } |
a0d0e21e | 2546 | } |
f86702cc | 2547 | PUTBACK; |
1c846c1f | 2548 | |
a57c6685 | 2549 | LEAVE; |
5dd42e15 | 2550 | cxstack_ix--; |
b0d9ce38 | 2551 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2552 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2553 | |
b0d9ce38 | 2554 | LEAVESUB(sv); |
f39bc417 | 2555 | return cx->blk_sub.retop; |
a0d0e21e LW |
2556 | } |
2557 | ||
2558 | PP(pp_entersub) | |
2559 | { | |
27da23d5 | 2560 | dVAR; dSP; dPOPss; |
a0d0e21e | 2561 | GV *gv; |
a0d0e21e | 2562 | register CV *cv; |
c09156bb | 2563 | register PERL_CONTEXT *cx; |
5d94fbed | 2564 | I32 gimme; |
a9c4fd4e | 2565 | const bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2566 | |
2567 | if (!sv) | |
cea2e8a9 | 2568 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e | 2569 | switch (SvTYPE(sv)) { |
f1025168 NC |
2570 | /* This is overwhelming the most common case: */ |
2571 | case SVt_PVGV: | |
13be902c | 2572 | we_have_a_glob: |
159b6efe | 2573 | if (!(cv = GvCVu((const GV *)sv))) { |
f730a42d | 2574 | HV *stash; |
f2c0649b | 2575 | cv = sv_2cv(sv, &stash, &gv, 0); |
f730a42d | 2576 | } |
f1025168 | 2577 | if (!cv) { |
a57c6685 | 2578 | ENTER; |
f1025168 NC |
2579 | SAVETMPS; |
2580 | goto try_autoload; | |
2581 | } | |
2582 | break; | |
13be902c FC |
2583 | case SVt_PVLV: |
2584 | if(isGV_with_GP(sv)) goto we_have_a_glob; | |
2585 | /*FALLTHROUGH*/ | |
a0d0e21e | 2586 | default: |
7c75014e DM |
2587 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
2588 | if (hasargs) | |
2589 | SP = PL_stack_base + POPMARK; | |
4d198de3 DM |
2590 | else |
2591 | (void)POPMARK; | |
7c75014e DM |
2592 | RETURN; |
2593 | } | |
2594 | SvGETMAGIC(sv); | |
2595 | if (SvROK(sv)) { | |
93d7320b DM |
2596 | if (SvAMAGIC(sv)) { |
2597 | sv = amagic_deref_call(sv, to_cv_amg); | |
2598 | /* Don't SPAGAIN here. */ | |
2599 | } | |
7c75014e DM |
2600 | } |
2601 | else { | |
a9c4fd4e | 2602 | const char *sym; |
780a5241 | 2603 | STRLEN len; |
7c75014e | 2604 | sym = SvPV_nomg_const(sv, len); |
15ff848f | 2605 | if (!sym) |
cea2e8a9 | 2606 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2607 | if (PL_op->op_private & HINT_STRICT_REFS) |
b375e37b | 2608 | DIE(aTHX_ "Can't use string (\"%" SVf32 "\"%s) as a subroutine ref while \"strict refs\" in use", sv, len>32 ? "..." : ""); |
780a5241 | 2609 | cv = get_cvn_flags(sym, len, GV_ADD|SvUTF8(sv)); |
a0d0e21e LW |
2610 | break; |
2611 | } | |
ea726b52 | 2612 | cv = MUTABLE_CV(SvRV(sv)); |
a0d0e21e LW |
2613 | if (SvTYPE(cv) == SVt_PVCV) |
2614 | break; | |
2615 | /* FALL THROUGH */ | |
2616 | case SVt_PVHV: | |
2617 | case SVt_PVAV: | |
cea2e8a9 | 2618 | DIE(aTHX_ "Not a CODE reference"); |
f1025168 | 2619 | /* This is the second most common case: */ |
a0d0e21e | 2620 | case SVt_PVCV: |
ea726b52 | 2621 | cv = MUTABLE_CV(sv); |
a0d0e21e | 2622 | break; |
a0d0e21e LW |
2623 | } |
2624 | ||
a57c6685 | 2625 | ENTER; |
a0d0e21e LW |
2626 | SAVETMPS; |
2627 | ||
2628 | retry: | |
541ed3a9 FC |
2629 | if (CvCLONE(cv) && ! CvCLONED(cv)) |
2630 | DIE(aTHX_ "Closure prototype called"); | |
a0d0e21e | 2631 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
2f349aa0 NC |
2632 | GV* autogv; |
2633 | SV* sub_name; | |
2634 | ||
2635 | /* anonymous or undef'd function leaves us no recourse */ | |
2636 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
2637 | DIE(aTHX_ "Undefined subroutine called"); | |
2638 | ||
2639 | /* autoloaded stub? */ | |
2640 | if (cv != GvCV(gv)) { | |
2641 | cv = GvCV(gv); | |
2642 | } | |
2643 | /* should call AUTOLOAD now? */ | |
2644 | else { | |
7e623da3 | 2645 | try_autoload: |
d1089224 BF |
2646 | if ((autogv = gv_autoload_pvn(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
2647 | GvNAMEUTF8(gv) ? SVf_UTF8 : 0))) | |
2f349aa0 NC |
2648 | { |
2649 | cv = GvCV(autogv); | |
2650 | } | |
2651 | /* sorry */ | |
2652 | else { | |
2653 | sub_name = sv_newmortal(); | |
6136c704 | 2654 | gv_efullname3(sub_name, gv, NULL); |
be2597df | 2655 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", SVfARG(sub_name)); |
2f349aa0 NC |
2656 | } |
2657 | } | |
2658 | if (!cv) | |
2659 | DIE(aTHX_ "Not a CODE reference"); | |
2660 | goto retry; | |
a0d0e21e LW |
2661 | } |
2662 | ||
54310121 | 2663 | gimme = GIMME_V; |
67caa1fe | 2664 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
005a8a35 | 2665 | Perl_get_db_sub(aTHX_ &sv, cv); |
a9ef256d NC |
2666 | if (CvISXSUB(cv)) |
2667 | PL_curcopdb = PL_curcop; | |
1ad62f64 BR |
2668 | if (CvLVALUE(cv)) { |
2669 | /* check for lsub that handles lvalue subroutines */ | |
ae5c1e95 | 2670 | cv = GvCV(gv_HVadd(gv_fetchpvs("DB::lsub", GV_ADDMULTI, SVt_PVHV))); |
1ad62f64 BR |
2671 | /* if lsub not found then fall back to DB::sub */ |
2672 | if (!cv) cv = GvCV(PL_DBsub); | |
2673 | } else { | |
2674 | cv = GvCV(PL_DBsub); | |
2675 | } | |
a9ef256d | 2676 | |
ccafdc96 RGS |
2677 | if (!cv || (!CvXSUB(cv) && !CvSTART(cv))) |
2678 | DIE(aTHX_ "No DB::sub routine defined"); | |
67caa1fe | 2679 | } |
a0d0e21e | 2680 | |
aed2304a | 2681 | if (!(CvISXSUB(cv))) { |
f1025168 | 2682 | /* This path taken at least 75% of the time */ |
a0d0e21e LW |
2683 | dMARK; |
2684 | register I32 items = SP - MARK; | |
0bcc34c2 | 2685 | AV* const padlist = CvPADLIST(cv); |
a0d0e21e LW |
2686 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2687 | PUSHSUB(cx); | |
f39bc417 | 2688 | cx->blk_sub.retop = PL_op->op_next; |
a0d0e21e | 2689 | CvDEPTH(cv)++; |
3a76ca88 RGS |
2690 | if (CvDEPTH(cv) >= 2) { |
2691 | PERL_STACK_OVERFLOW_CHECK(); | |
2692 | pad_push(padlist, CvDEPTH(cv)); | |
a0d0e21e | 2693 | } |
3a76ca88 RGS |
2694 | SAVECOMPPAD(); |
2695 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); | |
2696 | if (hasargs) { | |
10533ace | 2697 | AV *const av = MUTABLE_AV(PAD_SVl(0)); |
221373f0 GS |
2698 | if (AvREAL(av)) { |
2699 | /* @_ is normally not REAL--this should only ever | |
2700 | * happen when DB::sub() calls things that modify @_ */ | |
2701 | av_clear(av); | |
2702 | AvREAL_off(av); | |
2703 | AvREIFY_on(av); | |
2704 | } | |
3280af22 | 2705 | cx->blk_sub.savearray = GvAV(PL_defgv); |
502c6561 | 2706 | GvAV(PL_defgv) = MUTABLE_AV(SvREFCNT_inc_simple(av)); |
dd2155a4 | 2707 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2708 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2709 | ++MARK; |
2710 | ||
2711 | if (items > AvMAX(av) + 1) { | |
504618e9 | 2712 | SV **ary = AvALLOC(av); |
a0d0e21e LW |
2713 | if (AvARRAY(av) != ary) { |
2714 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
9c6bc640 | 2715 | AvARRAY(av) = ary; |
a0d0e21e LW |
2716 | } |
2717 | if (items > AvMAX(av) + 1) { | |
2718 | AvMAX(av) = items - 1; | |
2719 | Renew(ary,items,SV*); | |
2720 | AvALLOC(av) = ary; | |
9c6bc640 | 2721 | AvARRAY(av) = ary; |
a0d0e21e LW |
2722 | } |
2723 | } | |
2724 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2725 | AvFILLp(av) = items - 1; |
1c846c1f | 2726 | |
a0d0e21e LW |
2727 | while (items--) { |
2728 | if (*MARK) | |
2729 | SvTEMP_off(*MARK); | |
2730 | MARK++; | |
2731 | } | |
2732 | } | |
da1dff94 FC |
2733 | if ((cx->blk_u16 & OPpENTERSUB_LVAL_MASK) == OPpLVAL_INTRO && |
2734 | !CvLVALUE(cv)) | |
2735 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); | |
4a925ff6 GS |
2736 | /* warning must come *after* we fully set up the context |
2737 | * stuff so that __WARN__ handlers can safely dounwind() | |
2738 | * if they want to | |
2739 | */ | |
2b9dff67 | 2740 | if (CvDEPTH(cv) == PERL_SUB_DEPTH_WARN && ckWARN(WARN_RECURSION) |
4a925ff6 GS |
2741 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) |
2742 | sub_crush_depth(cv); | |
a0d0e21e LW |
2743 | RETURNOP(CvSTART(cv)); |
2744 | } | |
f1025168 | 2745 | else { |
3a76ca88 | 2746 | I32 markix = TOPMARK; |
f1025168 | 2747 | |
3a76ca88 | 2748 | PUTBACK; |
f1025168 | 2749 | |
3a76ca88 RGS |
2750 | if (!hasargs) { |
2751 | /* Need to copy @_ to stack. Alternative may be to | |
2752 | * switch stack to @_, and copy return values | |
2753 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
2754 | AV * const av = GvAV(PL_defgv); | |
2755 | const I32 items = AvFILLp(av) + 1; /* @_ is not tieable */ | |
2756 | ||
2757 | if (items) { | |
2758 | /* Mark is at the end of the stack. */ | |
2759 | EXTEND(SP, items); | |
2760 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2761 | SP += items; | |
2762 | PUTBACK ; | |
2763 | } | |
2764 | } | |
2765 | /* We assume first XSUB in &DB::sub is the called one. */ | |
2766 | if (PL_curcopdb) { | |
2767 | SAVEVPTR(PL_curcop); | |
2768 | PL_curcop = PL_curcopdb; | |
2769 | PL_curcopdb = NULL; | |
2770 | } | |
2771 | /* Do we need to open block here? XXXX */ | |
72df79cf GF |
2772 | |
2773 | /* CvXSUB(cv) must not be NULL because newXS() refuses NULL xsub address */ | |
2774 | assert(CvXSUB(cv)); | |
16c91539 | 2775 | CvXSUB(cv)(aTHX_ cv); |
3a76ca88 RGS |
2776 | |
2777 | /* Enforce some sanity in scalar context. */ | |
2778 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { | |
2779 | if (markix > PL_stack_sp - PL_stack_base) | |
2780 | *(PL_stack_base + markix) = &PL_sv_undef; | |
2781 | else | |
2782 | *(PL_stack_base + markix) = *PL_stack_sp; | |
2783 | PL_stack_sp = PL_stack_base + markix; | |
2784 | } | |
a57c6685 | 2785 | LEAVE; |
f1025168 NC |
2786 | return NORMAL; |
2787 | } | |
a0d0e21e LW |
2788 | } |
2789 | ||
44a8e56a | 2790 | void |
864dbfa3 | 2791 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2792 | { |
7918f24d NC |
2793 | PERL_ARGS_ASSERT_SUB_CRUSH_DEPTH; |
2794 | ||
44a8e56a | 2795 | if (CvANON(cv)) |
9014280d | 2796 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 2797 | else { |
aec46f14 | 2798 | SV* const tmpstr = sv_newmortal(); |
6136c704 | 2799 | gv_efullname3(tmpstr, CvGV(cv), NULL); |
35c1215d | 2800 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
be2597df | 2801 | SVfARG(tmpstr)); |
44a8e56a | 2802 | } |
2803 | } | |
2804 | ||
a0d0e21e LW |
2805 | PP(pp_aelem) |
2806 | { | |
97aff369 | 2807 | dVAR; dSP; |
a0d0e21e | 2808 | SV** svp; |
a3b680e6 | 2809 | SV* const elemsv = POPs; |
d804643f | 2810 | IV elem = SvIV(elemsv); |
502c6561 | 2811 | AV *const av = MUTABLE_AV(POPs); |
e1ec3a88 AL |
2812 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
2813 | const U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > av_len(av)); | |
4ad10a0b VP |
2814 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
2815 | bool preeminent = TRUE; | |
be6c24e0 | 2816 | SV *sv; |
a0d0e21e | 2817 | |
e35c1634 | 2818 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
95b63a38 JH |
2819 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
2820 | "Use of reference \"%"SVf"\" as array index", | |
be2597df | 2821 | SVfARG(elemsv)); |
a0d0e21e LW |
2822 | if (SvTYPE(av) != SVt_PVAV) |
2823 | RETPUSHUNDEF; | |
4ad10a0b VP |
2824 | |
2825 | if (localizing) { | |
2826 | MAGIC *mg; | |
2827 | HV *stash; | |
2828 | ||
2829 | /* If we can determine whether the element exist, | |
2830 | * Try to preserve the existenceness of a tied array | |
2831 | * element by using EXISTS and DELETE if possible. | |
2832 | * Fallback to FETCH and STORE otherwise. */ | |
2833 | if (SvCANEXISTDELETE(av)) | |
2834 | preeminent = av_exists(av, elem); | |
2835 | } | |
2836 | ||
68dc0745 | 2837 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2838 | if (lval) { |
2b573ace | 2839 | #ifdef PERL_MALLOC_WRAP |
2b573ace | 2840 | if (SvUOK(elemsv)) { |
a9c4fd4e | 2841 | const UV uv = SvUV(elemsv); |
2b573ace JH |
2842 | elem = uv > IV_MAX ? IV_MAX : uv; |
2843 | } | |
2844 | else if (SvNOK(elemsv)) | |
2845 | elem = (IV)SvNV(elemsv); | |
a3b680e6 AL |
2846 | if (elem > 0) { |
2847 | static const char oom_array_extend[] = | |
2848 | "Out of memory during array extend"; /* Duplicated in av.c */ | |
2b573ace | 2849 | MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend); |
a3b680e6 | 2850 | } |
2b573ace | 2851 | #endif |
3280af22 | 2852 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 2853 | SV* lv; |
2854 | if (!defer) | |
cea2e8a9 | 2855 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 2856 | lv = sv_newmortal(); |
2857 | sv_upgrade(lv, SVt_PVLV); | |
2858 | LvTYPE(lv) = 'y'; | |
a0714e2c | 2859 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); |
b37c2d43 | 2860 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
68dc0745 | 2861 | LvTARGOFF(lv) = elem; |
2862 | LvTARGLEN(lv) = 1; | |
2863 | PUSHs(lv); | |
2864 | RETURN; | |
2865 | } | |
4ad10a0b VP |
2866 | if (localizing) { |
2867 | if (preeminent) | |
2868 | save_aelem(av, elem, svp); | |
2869 | else | |
2870 | SAVEADELETE(av, elem); | |
2871 | } | |
9026059d GG |
2872 | else if (PL_op->op_private & OPpDEREF) { |
2873 | PUSHs(vivify_ref(*svp, PL_op->op_private & OPpDEREF)); | |
2874 | RETURN; | |
2875 | } | |
a0d0e21e | 2876 | } |
3280af22 | 2877 | sv = (svp ? *svp : &PL_sv_undef); |
39cf747a | 2878 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 2879 | mg_get(sv); |
be6c24e0 | 2880 | PUSHs(sv); |
a0d0e21e LW |
2881 | RETURN; |
2882 | } | |
2883 | ||
9026059d | 2884 | SV* |
864dbfa3 | 2885 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 | 2886 | { |
7918f24d NC |
2887 | PERL_ARGS_ASSERT_VIVIFY_REF; |
2888 | ||
5b295bef | 2889 | SvGETMAGIC(sv); |
02a9e968 CS |
2890 | if (!SvOK(sv)) { |
2891 | if (SvREADONLY(sv)) | |
6ad8f254 | 2892 | Perl_croak_no_modify(aTHX); |
43230e26 | 2893 | prepare_SV_for_RV(sv); |
68dc0745 | 2894 | switch (to_what) { |
5f05dabc | 2895 | case OPpDEREF_SV: |
561b68a9 | 2896 | SvRV_set(sv, newSV(0)); |
5f05dabc | 2897 | break; |
2898 | case OPpDEREF_AV: | |
ad64d0ec | 2899 | SvRV_set(sv, MUTABLE_SV(newAV())); |
5f05dabc | 2900 | break; |
2901 | case OPpDEREF_HV: | |
ad64d0ec | 2902 | SvRV_set(sv, MUTABLE_SV(newHV())); |
5f05dabc | 2903 | break; |
2904 | } | |
02a9e968 CS |
2905 | SvROK_on(sv); |
2906 | SvSETMAGIC(sv); | |
7e482323 | 2907 | SvGETMAGIC(sv); |
02a9e968 | 2908 | } |
9026059d GG |
2909 | if (SvGMAGICAL(sv)) { |
2910 | /* copy the sv without magic to prevent magic from being | |
2911 | executed twice */ | |
2912 | SV* msv = sv_newmortal(); | |
2913 | sv_setsv_nomg(msv, sv); | |
2914 | return msv; | |
2915 | } | |
2916 | return sv; | |
02a9e968 CS |
2917 | } |
2918 | ||
a0d0e21e LW |
2919 | PP(pp_method) |
2920 | { | |
97aff369 | 2921 | dVAR; dSP; |
890ce7af | 2922 | SV* const sv = TOPs; |
f5d5a27c CS |
2923 | |
2924 | if (SvROK(sv)) { | |
890ce7af | 2925 | SV* const rsv = SvRV(sv); |
f5d5a27c CS |
2926 | if (SvTYPE(rsv) == SVt_PVCV) { |
2927 | SETs(rsv); | |
2928 | RETURN; | |
2929 | } | |
2930 | } | |
2931 | ||
4608196e | 2932 | SETs(method_common(sv, NULL)); |
f5d5a27c CS |
2933 | RETURN; |
2934 | } | |
2935 | ||
2936 | PP(pp_method_named) | |
2937 | { | |
97aff369 | 2938 | dVAR; dSP; |
890ce7af | 2939 | SV* const sv = cSVOP_sv; |
c158a4fd | 2940 | U32 hash = SvSHARED_HASH(sv); |
f5d5a27c CS |
2941 | |
2942 | XPUSHs(method_common(sv, &hash)); | |
2943 | RETURN; | |
2944 | } | |
2945 | ||
2946 | STATIC SV * | |
2947 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
2948 | { | |
97aff369 | 2949 | dVAR; |
a0d0e21e LW |
2950 | SV* ob; |
2951 | GV* gv; | |
56304f61 | 2952 | HV* stash; |
a0714e2c | 2953 | SV *packsv = NULL; |
f226e9be FC |
2954 | SV * const sv = PL_stack_base + TOPMARK == PL_stack_sp |
2955 | ? (Perl_croak(aTHX_ "Can't call method \"%"SVf"\" without a " | |
2956 | "package or object reference", SVfARG(meth)), | |
2957 | (SV *)NULL) | |
2958 | : *(PL_stack_base + TOPMARK + 1); | |
f5d5a27c | 2959 | |
7918f24d NC |
2960 | PERL_ARGS_ASSERT_METHOD_COMMON; |
2961 | ||
4f1b7578 | 2962 | if (!sv) |
a214957f VP |
2963 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" on an undefined value", |
2964 | SVfARG(meth)); | |
4f1b7578 | 2965 | |
5b295bef | 2966 | SvGETMAGIC(sv); |
a0d0e21e | 2967 | if (SvROK(sv)) |
ad64d0ec | 2968 | ob = MUTABLE_SV(SvRV(sv)); |
a0d0e21e LW |
2969 | else { |
2970 | GV* iogv; | |
f937af42 BF |
2971 | STRLEN packlen; |
2972 | const char * packname = NULL; | |
da6b625f | 2973 | bool packname_is_utf8 = FALSE; |
a0d0e21e | 2974 | |
af09ea45 | 2975 | /* this isn't a reference */ |
da6b625f FC |
2976 | if(SvOK(sv) && (packname = SvPV_nomg_const(sv, packlen))) { |
2977 | const HE* const he = | |
2978 | (const HE *)hv_common_key_len( | |
2979 | PL_stashcache, packname, | |
2980 | packlen * -(packname_is_utf8 = !!SvUTF8(sv)), 0, NULL, 0 | |
2981 | ); | |
2982 | ||
081fc587 | 2983 | if (he) { |
5e6396ae | 2984 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
081fc587 AB |
2985 | goto fetch; |
2986 | } | |
2987 | } | |
2988 | ||
a0d0e21e | 2989 | if (!SvOK(sv) || |
05f5af9a | 2990 | !(packname) || |
da6b625f FC |
2991 | !(iogv = gv_fetchpvn_flags( |
2992 | packname, packlen, SVf_UTF8 * packname_is_utf8, SVt_PVIO | |
2993 | )) || | |
ad64d0ec | 2994 | !(ob=MUTABLE_SV(GvIO(iogv)))) |
a0d0e21e | 2995 | { |
af09ea45 | 2996 | /* this isn't the name of a filehandle either */ |
1c846c1f | 2997 | if (!packname || |
fd400ab9 | 2998 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 2999 | ? !isIDFIRST_utf8((U8*)packname) |
d47f310d | 3000 | : !isIDFIRST_L1((U8)*packname) |
834a4ddd LW |
3001 | )) |
3002 | { | |
d5e45555 | 3003 | /* diag_listed_as: Can't call method "%s" without a package or object reference */ |
a214957f VP |
3004 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" %s", |
3005 | SVfARG(meth), | |
f5d5a27c CS |
3006 | SvOK(sv) ? "without a package or object reference" |
3007 | : "on an undefined value"); | |
834a4ddd | 3008 | } |
af09ea45 | 3009 | /* assume it's a package name */ |
f937af42 | 3010 | stash = gv_stashpvn(packname, packlen, packname_is_utf8 ? SVf_UTF8 : 0); |
0dae17bd GS |
3011 | if (!stash) |
3012 | packsv = sv; | |
081fc587 | 3013 | else { |
d4c19fe8 | 3014 | SV* const ref = newSViv(PTR2IV(stash)); |
f937af42 | 3015 | (void)hv_store(PL_stashcache, packname, |
c60dbbc3 | 3016 | packname_is_utf8 ? -(I32)packlen : (I32)packlen, ref, 0); |
7e8961ec | 3017 | } |
ac91690f | 3018 | goto fetch; |
a0d0e21e | 3019 | } |
af09ea45 | 3020 | /* it _is_ a filehandle name -- replace with a reference */ |
ad64d0ec | 3021 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV(MUTABLE_SV(iogv))); |
a0d0e21e LW |
3022 | } |
3023 | ||
af09ea45 | 3024 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 | 3025 | if (!ob || !(SvOBJECT(ob) |
6e592b3a BM |
3026 | || (SvTYPE(ob) == SVt_PVGV |
3027 | && isGV_with_GP(ob) | |
159b6efe | 3028 | && (ob = MUTABLE_SV(GvIO((const GV *)ob))) |
f0d43078 GS |
3029 | && SvOBJECT(ob)))) |
3030 | { | |
b375e37b BF |
3031 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" on unblessed reference", |
3032 | SVfARG((SvSCREAM(meth) && strEQ(SvPV_nolen_const(meth),"isa")) | |
3033 | ? newSVpvs_flags("DOES", SVs_TEMP) | |
3034 | : meth)); | |
f0d43078 | 3035 | } |
a0d0e21e | 3036 | |
56304f61 | 3037 | stash = SvSTASH(ob); |
a0d0e21e | 3038 | |
ac91690f | 3039 | fetch: |
af09ea45 IK |
3040 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3041 | gv_fetchmethod can cope (it seems they can) */ | |
3042 | ||
f5d5a27c CS |
3043 | /* shortcut for simple names */ |
3044 | if (hashp) { | |
b464bac0 | 3045 | const HE* const he = hv_fetch_ent(stash, meth, 0, *hashp); |
f5d5a27c | 3046 | if (he) { |
159b6efe | 3047 | gv = MUTABLE_GV(HeVAL(he)); |
f5d5a27c | 3048 | if (isGV(gv) && GvCV(gv) && |
e1a479c5 | 3049 | (!GvCVGEN(gv) || GvCVGEN(gv) |
dd69841b | 3050 | == (PL_sub_generation + HvMROMETA(stash)->cache_gen))) |
ad64d0ec | 3051 | return MUTABLE_SV(GvCV(gv)); |
f5d5a27c CS |
3052 | } |
3053 | } | |
3054 | ||
f937af42 BF |
3055 | gv = gv_fetchmethod_sv_flags(stash ? stash : MUTABLE_HV(packsv), |
3056 | meth, GV_AUTOLOAD | GV_CROAK); | |
9b9d0b15 | 3057 | |
256d1bb2 | 3058 | assert(gv); |
9b9d0b15 | 3059 | |
ad64d0ec | 3060 | return isGV(gv) ? MUTABLE_SV(GvCV(gv)) : MUTABLE_SV(gv); |
a0d0e21e | 3061 | } |
241d1a3b NC |
3062 | |
3063 | /* | |
3064 | * Local variables: | |
3065 | * c-indentation-style: bsd | |
3066 | * c-basic-offset: 4 | |
14d04a33 | 3067 | * indent-tabs-mode: nil |
241d1a3b NC |
3068 | * End: |
3069 | * | |
14d04a33 | 3070 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 3071 | */ |