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 | ||
77 | PP(pp_pushmark) | |
78 | { | |
97aff369 | 79 | dVAR; |
3280af22 | 80 | PUSHMARK(PL_stack_sp); |
a0d0e21e LW |
81 | return NORMAL; |
82 | } | |
83 | ||
84 | PP(pp_stringify) | |
85 | { | |
97aff369 | 86 | dVAR; dSP; dTARGET; |
6050d10e | 87 | sv_copypv(TARG,TOPs); |
a0d0e21e LW |
88 | SETTARG; |
89 | RETURN; | |
90 | } | |
91 | ||
92 | PP(pp_gv) | |
93 | { | |
97aff369 | 94 | dVAR; dSP; |
ad64d0ec | 95 | XPUSHs(MUTABLE_SV(cGVOP_gv)); |
a0d0e21e LW |
96 | RETURN; |
97 | } | |
98 | ||
99 | PP(pp_and) | |
100 | { | |
97aff369 | 101 | dVAR; dSP; |
f410a211 | 102 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
103 | if (!SvTRUE(TOPs)) |
104 | RETURN; | |
105 | else { | |
c960fc3b SP |
106 | if (PL_op->op_type == OP_AND) |
107 | --SP; | |
a0d0e21e LW |
108 | RETURNOP(cLOGOP->op_other); |
109 | } | |
110 | } | |
111 | ||
112 | PP(pp_sassign) | |
113 | { | |
97aff369 | 114 | dVAR; dSP; dPOPTOPssrl; |
0fe688f5 | 115 | U32 wasfake = 0; |
748a9306 | 116 | |
533c011a | 117 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
0bd48802 AL |
118 | SV * const temp = left; |
119 | left = right; right = temp; | |
a0d0e21e | 120 | } |
3280af22 | 121 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e | 122 | TAINT_NOT; |
e26df76a | 123 | if (PL_op->op_private & OPpASSIGN_CV_TO_GV) { |
6136c704 | 124 | SV * const cv = SvRV(left); |
e26df76a NC |
125 | const U32 cv_type = SvTYPE(cv); |
126 | const U32 gv_type = SvTYPE(right); | |
6136c704 | 127 | const bool got_coderef = cv_type == SVt_PVCV || cv_type == SVt_PVFM; |
e26df76a NC |
128 | |
129 | if (!got_coderef) { | |
130 | assert(SvROK(cv)); | |
131 | } | |
132 | ||
ae6d515f | 133 | /* Can do the optimisation if right (LVALUE) is not a typeglob, |
e26df76a NC |
134 | left (RVALUE) is a reference to something, and we're in void |
135 | context. */ | |
136 | if (!got_coderef && gv_type != SVt_PVGV && GIMME_V == G_VOID) { | |
137 | /* Is the target symbol table currently empty? */ | |
6136c704 | 138 | GV * const gv = gv_fetchsv(right, GV_NOINIT, SVt_PVGV); |
bb112e5a | 139 | if (SvTYPE(gv) != SVt_PVGV && !SvOK(gv)) { |
e26df76a NC |
140 | /* Good. Create a new proxy constant subroutine in the target. |
141 | The gv becomes a(nother) reference to the constant. */ | |
142 | SV *const value = SvRV(cv); | |
143 | ||
ad64d0ec | 144 | SvUPGRADE(MUTABLE_SV(gv), SVt_IV); |
1ccdb730 | 145 | SvPCS_IMPORTED_on(gv); |
e26df76a | 146 | SvRV_set(gv, value); |
b37c2d43 | 147 | SvREFCNT_inc_simple_void(value); |
e26df76a NC |
148 | SETs(right); |
149 | RETURN; | |
150 | } | |
151 | } | |
152 | ||
153 | /* Need to fix things up. */ | |
154 | if (gv_type != SVt_PVGV) { | |
155 | /* Need to fix GV. */ | |
ad64d0ec | 156 | right = MUTABLE_SV(gv_fetchsv(right, GV_ADD, SVt_PVGV)); |
e26df76a NC |
157 | } |
158 | ||
159 | if (!got_coderef) { | |
160 | /* We've been returned a constant rather than a full subroutine, | |
161 | but they expect a subroutine reference to apply. */ | |
53a42478 | 162 | if (SvROK(cv)) { |
d343c3ef | 163 | ENTER_with_name("sassign_coderef"); |
53a42478 NC |
164 | SvREFCNT_inc_void(SvRV(cv)); |
165 | /* newCONSTSUB takes a reference count on the passed in SV | |
166 | from us. We set the name to NULL, otherwise we get into | |
167 | all sorts of fun as the reference to our new sub is | |
168 | donated to the GV that we're about to assign to. | |
169 | */ | |
ad64d0ec NC |
170 | SvRV_set(left, MUTABLE_SV(newCONSTSUB(GvSTASH(right), NULL, |
171 | SvRV(cv)))); | |
53a42478 | 172 | SvREFCNT_dec(cv); |
d343c3ef | 173 | LEAVE_with_name("sassign_coderef"); |
53a42478 NC |
174 | } else { |
175 | /* What can happen for the corner case *{"BONK"} = \&{"BONK"}; | |
176 | is that | |
177 | First: ops for \&{"BONK"}; return us the constant in the | |
178 | symbol table | |
179 | Second: ops for *{"BONK"} cause that symbol table entry | |
180 | (and our reference to it) to be upgraded from RV | |
181 | to typeblob) | |
182 | Thirdly: We get here. cv is actually PVGV now, and its | |
183 | GvCV() is actually the subroutine we're looking for | |
184 | ||
185 | So change the reference so that it points to the subroutine | |
186 | of that typeglob, as that's what they were after all along. | |
187 | */ | |
159b6efe | 188 | GV *const upgraded = MUTABLE_GV(cv); |
53a42478 NC |
189 | CV *const source = GvCV(upgraded); |
190 | ||
191 | assert(source); | |
192 | assert(CvFLAGS(source) & CVf_CONST); | |
193 | ||
194 | SvREFCNT_inc_void(source); | |
195 | SvREFCNT_dec(upgraded); | |
ad64d0ec | 196 | SvRV_set(left, MUTABLE_SV(source)); |
53a42478 | 197 | } |
e26df76a | 198 | } |
53a42478 | 199 | |
e26df76a | 200 | } |
0fe688f5 FC |
201 | /* Allow glob assignments like *$x = ..., which, when the glob has a |
202 | SVf_FAKE flag, cannot be distinguished from $x = ... without looking | |
203 | at the op tree. */ | |
204 | if( SvTYPE(right) == SVt_PVGV && cBINOP->op_last->op_type == OP_RV2GV | |
205 | && (wasfake = SvFLAGS(right) & SVf_FAKE) ) | |
206 | SvFLAGS(right) &= ~SVf_FAKE; | |
54310121 | 207 | SvSetMagicSV(right, left); |
0fe688f5 | 208 | if(wasfake) SvFLAGS(right) |= SVf_FAKE; |
a0d0e21e LW |
209 | SETs(right); |
210 | RETURN; | |
211 | } | |
212 | ||
213 | PP(pp_cond_expr) | |
214 | { | |
97aff369 | 215 | dVAR; dSP; |
f410a211 | 216 | PERL_ASYNC_CHECK(); |
a0d0e21e | 217 | if (SvTRUEx(POPs)) |
1a67a97c | 218 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 219 | else |
1a67a97c | 220 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
221 | } |
222 | ||
223 | PP(pp_unstack) | |
224 | { | |
97aff369 | 225 | dVAR; |
a0d0e21e | 226 | I32 oldsave; |
8f3964af | 227 | PERL_ASYNC_CHECK(); |
a0d0e21e | 228 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 229 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 230 | FREETMPS; |
3280af22 | 231 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
232 | LEAVE_SCOPE(oldsave); |
233 | return NORMAL; | |
234 | } | |
235 | ||
a0d0e21e LW |
236 | PP(pp_concat) |
237 | { | |
6f1401dc | 238 | dVAR; dSP; dATARGET; tryAMAGICbin_MG(concat_amg, AMGf_assign); |
748a9306 LW |
239 | { |
240 | dPOPTOPssrl; | |
8d6d96c1 HS |
241 | bool lbyte; |
242 | STRLEN rlen; | |
d4c19fe8 | 243 | const char *rpv = NULL; |
a6b599c7 | 244 | bool rbyte = FALSE; |
a9c4fd4e | 245 | bool rcopied = FALSE; |
8d6d96c1 | 246 | |
6f1401dc DM |
247 | if (TARG == right && right != left) { /* $r = $l.$r */ |
248 | rpv = SvPV_nomg_const(right, rlen); | |
c75ab21a | 249 | rbyte = !DO_UTF8(right); |
59cd0e26 | 250 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
349d4f2f | 251 | rpv = SvPV_const(right, rlen); /* no point setting UTF-8 here */ |
db79b45b | 252 | rcopied = TRUE; |
8d6d96c1 | 253 | } |
7889fe52 | 254 | |
89734059 | 255 | if (TARG != left) { /* not $l .= $r */ |
a9c4fd4e | 256 | STRLEN llen; |
6f1401dc | 257 | const char* const lpv = SvPV_nomg_const(left, llen); |
90f5826e | 258 | lbyte = !DO_UTF8(left); |
8d6d96c1 HS |
259 | sv_setpvn(TARG, lpv, llen); |
260 | if (!lbyte) | |
261 | SvUTF8_on(TARG); | |
262 | else | |
263 | SvUTF8_off(TARG); | |
264 | } | |
89734059 | 265 | else { /* $l .= $r */ |
c75ab21a | 266 | if (!SvOK(TARG)) { |
89734059 | 267 | if (left == right && ckWARN(WARN_UNINITIALIZED)) /* $l .= $l */ |
c75ab21a | 268 | report_uninit(right); |
76f68e9b | 269 | sv_setpvs(left, ""); |
c75ab21a | 270 | } |
c5aa2872 DM |
271 | lbyte = (SvROK(left) && SvTYPE(SvRV(left)) == SVt_REGEXP) |
272 | ? !DO_UTF8(SvRV(left)) : !DO_UTF8(left); | |
90f5826e TS |
273 | if (IN_BYTES) |
274 | SvUTF8_off(TARG); | |
8d6d96c1 | 275 | } |
a12c0f56 | 276 | |
c75ab21a | 277 | if (!rcopied) { |
6f1401dc | 278 | if (left == right) |
89734059 | 279 | /* $r.$r: do magic twice: tied might return different 2nd time */ |
6f1401dc DM |
280 | SvGETMAGIC(right); |
281 | rpv = SvPV_nomg_const(right, rlen); | |
c75ab21a RH |
282 | rbyte = !DO_UTF8(right); |
283 | } | |
8d6d96c1 HS |
284 | if (lbyte != rbyte) { |
285 | if (lbyte) | |
286 | sv_utf8_upgrade_nomg(TARG); | |
287 | else { | |
db79b45b | 288 | if (!rcopied) |
59cd0e26 | 289 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
8d6d96c1 | 290 | sv_utf8_upgrade_nomg(right); |
6f1401dc | 291 | rpv = SvPV_nomg_const(right, rlen); |
69b47968 | 292 | } |
a0d0e21e | 293 | } |
8d6d96c1 | 294 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 295 | |
a0d0e21e LW |
296 | SETTARG; |
297 | RETURN; | |
748a9306 | 298 | } |
a0d0e21e LW |
299 | } |
300 | ||
301 | PP(pp_padsv) | |
302 | { | |
97aff369 | 303 | dVAR; dSP; dTARGET; |
a0d0e21e | 304 | XPUSHs(TARG); |
533c011a NIS |
305 | if (PL_op->op_flags & OPf_MOD) { |
306 | if (PL_op->op_private & OPpLVAL_INTRO) | |
952306ac RGS |
307 | if (!(PL_op->op_private & OPpPAD_STATE)) |
308 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); | |
a62b51b8 | 309 | if (PL_op->op_private & OPpDEREF) { |
8ec5e241 | 310 | PUTBACK; |
dd2155a4 | 311 | vivify_ref(PAD_SVl(PL_op->op_targ), PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
312 | SPAGAIN; |
313 | } | |
4633a7c4 | 314 | } |
a0d0e21e LW |
315 | RETURN; |
316 | } | |
317 | ||
318 | PP(pp_readline) | |
319 | { | |
97aff369 | 320 | dVAR; |
f5284f61 | 321 | tryAMAGICunTARGET(iter, 0); |
159b6efe | 322 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
6e592b3a BM |
323 | if (!isGV_with_GP(PL_last_in_gv)) { |
324 | if (SvROK(PL_last_in_gv) && isGV_with_GP(SvRV(PL_last_in_gv))) | |
159b6efe | 325 | PL_last_in_gv = MUTABLE_GV(SvRV(PL_last_in_gv)); |
8efb3254 | 326 | else { |
f5284f61 | 327 | dSP; |
ad64d0ec | 328 | XPUSHs(MUTABLE_SV(PL_last_in_gv)); |
f5284f61 | 329 | PUTBACK; |
cea2e8a9 | 330 | pp_rv2gv(); |
159b6efe | 331 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
f5284f61 IZ |
332 | } |
333 | } | |
a0d0e21e LW |
334 | return do_readline(); |
335 | } | |
336 | ||
337 | PP(pp_eq) | |
338 | { | |
6f1401dc DM |
339 | dVAR; dSP; |
340 | tryAMAGICbin_MG(eq_amg, AMGf_set); | |
4c9fe80f | 341 | #ifndef NV_PRESERVES_UV |
ed3b9b3c | 342 | if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) { |
e61d22ef NC |
343 | SP--; |
344 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); | |
4c9fe80f AS |
345 | RETURN; |
346 | } | |
347 | #endif | |
28e5dec8 | 348 | #ifdef PERL_PRESERVE_IVUV |
6f1401dc | 349 | SvIV_please_nomg(TOPs); |
28e5dec8 | 350 | if (SvIOK(TOPs)) { |
4c9fe80f AS |
351 | /* Unless the left argument is integer in range we are going |
352 | to have to use NV maths. Hence only attempt to coerce the | |
353 | right argument if we know the left is integer. */ | |
6f1401dc | 354 | SvIV_please_nomg(TOPm1s); |
28e5dec8 | 355 | if (SvIOK(TOPm1s)) { |
0bd48802 AL |
356 | const bool auvok = SvUOK(TOPm1s); |
357 | const bool buvok = SvUOK(TOPs); | |
a12c0f56 | 358 | |
1605159e NC |
359 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
360 | /* Casting IV to UV before comparison isn't going to matter | |
361 | on 2s complement. On 1s complement or sign&magnitude | |
362 | (if we have any of them) it could to make negative zero | |
363 | differ from normal zero. As I understand it. (Need to | |
364 | check - is negative zero implementation defined behaviour | |
365 | anyway?). NWC */ | |
0bd48802 AL |
366 | const UV buv = SvUVX(POPs); |
367 | const UV auv = SvUVX(TOPs); | |
28e5dec8 | 368 | |
28e5dec8 JH |
369 | SETs(boolSV(auv == buv)); |
370 | RETURN; | |
371 | } | |
372 | { /* ## Mixed IV,UV ## */ | |
1605159e | 373 | SV *ivp, *uvp; |
28e5dec8 | 374 | IV iv; |
28e5dec8 | 375 | |
1605159e | 376 | /* == is commutative so doesn't matter which is left or right */ |
28e5dec8 | 377 | if (auvok) { |
1605159e NC |
378 | /* top of stack (b) is the iv */ |
379 | ivp = *SP; | |
380 | uvp = *--SP; | |
381 | } else { | |
382 | uvp = *SP; | |
383 | ivp = *--SP; | |
384 | } | |
385 | iv = SvIVX(ivp); | |
d4c19fe8 | 386 | if (iv < 0) |
1605159e NC |
387 | /* As uv is a UV, it's >0, so it cannot be == */ |
388 | SETs(&PL_sv_no); | |
d4c19fe8 AL |
389 | else |
390 | /* we know iv is >= 0 */ | |
391 | SETs(boolSV((UV)iv == SvUVX(uvp))); | |
28e5dec8 JH |
392 | RETURN; |
393 | } | |
394 | } | |
395 | } | |
396 | #endif | |
a0d0e21e | 397 | { |
cab190d4 | 398 | #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan) |
6f1401dc | 399 | dPOPTOPnnrl_nomg; |
cab190d4 JD |
400 | if (Perl_isnan(left) || Perl_isnan(right)) |
401 | RETSETNO; | |
402 | SETs(boolSV(left == right)); | |
403 | #else | |
6f1401dc DM |
404 | dPOPnv_nomg; |
405 | SETs(boolSV(SvNV_nomg(TOPs) == value)); | |
cab190d4 | 406 | #endif |
a0d0e21e LW |
407 | RETURN; |
408 | } | |
409 | } | |
410 | ||
411 | PP(pp_preinc) | |
412 | { | |
97aff369 | 413 | dVAR; dSP; |
6e592b3a | 414 | if (SvTYPE(TOPs) >= SVt_PVAV || isGV_with_GP(TOPs)) |
6ad8f254 | 415 | Perl_croak_no_modify(aTHX); |
3510b4a1 NC |
416 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
417 | && SvIVX(TOPs) != IV_MAX) | |
55497cff | 418 | { |
45977657 | 419 | SvIV_set(TOPs, SvIVX(TOPs) + 1); |
55497cff | 420 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 421 | } |
28e5dec8 | 422 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 | 423 | sv_inc(TOPs); |
a0d0e21e LW |
424 | SvSETMAGIC(TOPs); |
425 | return NORMAL; | |
426 | } | |
427 | ||
428 | PP(pp_or) | |
429 | { | |
97aff369 | 430 | dVAR; dSP; |
f410a211 | 431 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
432 | if (SvTRUE(TOPs)) |
433 | RETURN; | |
434 | else { | |
c960fc3b SP |
435 | if (PL_op->op_type == OP_OR) |
436 | --SP; | |
a0d0e21e LW |
437 | RETURNOP(cLOGOP->op_other); |
438 | } | |
439 | } | |
440 | ||
25a55bd7 | 441 | PP(pp_defined) |
c963b151 | 442 | { |
97aff369 | 443 | dVAR; dSP; |
6136c704 AL |
444 | register SV* sv; |
445 | bool defined; | |
25a55bd7 | 446 | const int op_type = PL_op->op_type; |
ea5195b7 | 447 | const bool is_dor = (op_type == OP_DOR || op_type == OP_DORASSIGN); |
c963b151 | 448 | |
6136c704 | 449 | if (is_dor) { |
f410a211 | 450 | PERL_ASYNC_CHECK(); |
25a55bd7 SP |
451 | sv = TOPs; |
452 | if (!sv || !SvANY(sv)) { | |
2bd49cfc NC |
453 | if (op_type == OP_DOR) |
454 | --SP; | |
25a55bd7 SP |
455 | RETURNOP(cLOGOP->op_other); |
456 | } | |
b7c44293 RGS |
457 | } |
458 | else { | |
459 | /* OP_DEFINED */ | |
25a55bd7 SP |
460 | sv = POPs; |
461 | if (!sv || !SvANY(sv)) | |
462 | RETPUSHNO; | |
b7c44293 | 463 | } |
25a55bd7 | 464 | |
6136c704 | 465 | defined = FALSE; |
c963b151 BD |
466 | switch (SvTYPE(sv)) { |
467 | case SVt_PVAV: | |
468 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 469 | defined = TRUE; |
c963b151 BD |
470 | break; |
471 | case SVt_PVHV: | |
472 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 473 | defined = TRUE; |
c963b151 BD |
474 | break; |
475 | case SVt_PVCV: | |
476 | if (CvROOT(sv) || CvXSUB(sv)) | |
25a55bd7 | 477 | defined = TRUE; |
c963b151 BD |
478 | break; |
479 | default: | |
5b295bef | 480 | SvGETMAGIC(sv); |
c963b151 | 481 | if (SvOK(sv)) |
25a55bd7 | 482 | defined = TRUE; |
6136c704 | 483 | break; |
c963b151 | 484 | } |
6136c704 AL |
485 | |
486 | if (is_dor) { | |
c960fc3b SP |
487 | if(defined) |
488 | RETURN; | |
489 | if(op_type == OP_DOR) | |
490 | --SP; | |
25a55bd7 | 491 | RETURNOP(cLOGOP->op_other); |
25a55bd7 | 492 | } |
d9aa96a4 SP |
493 | /* assuming OP_DEFINED */ |
494 | if(defined) | |
495 | RETPUSHYES; | |
496 | RETPUSHNO; | |
c963b151 BD |
497 | } |
498 | ||
a0d0e21e LW |
499 | PP(pp_add) |
500 | { | |
800401ee | 501 | dVAR; dSP; dATARGET; bool useleft; SV *svl, *svr; |
6f1401dc DM |
502 | tryAMAGICbin_MG(add_amg, AMGf_assign|AMGf_numeric); |
503 | svr = TOPs; | |
504 | svl = TOPm1s; | |
505 | ||
800401ee | 506 | useleft = USE_LEFT(svl); |
28e5dec8 JH |
507 | #ifdef PERL_PRESERVE_IVUV |
508 | /* We must see if we can perform the addition with integers if possible, | |
509 | as the integer code detects overflow while the NV code doesn't. | |
510 | If either argument hasn't had a numeric conversion yet attempt to get | |
511 | the IV. It's important to do this now, rather than just assuming that | |
512 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
513 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
514 | integer in case the second argument is IV=9223372036854775806 | |
515 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
516 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
517 | ||
518 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
519 | fp maths for integer values. |
520 | ||
a00b5bd3 | 521 | How to detect overflow? |
7dca457a NC |
522 | |
523 | C 99 section 6.2.6.1 says | |
524 | ||
525 | The range of nonnegative values of a signed integer type is a subrange | |
526 | of the corresponding unsigned integer type, and the representation of | |
527 | the same value in each type is the same. A computation involving | |
528 | unsigned operands can never overflow, because a result that cannot be | |
529 | represented by the resulting unsigned integer type is reduced modulo | |
530 | the number that is one greater than the largest value that can be | |
531 | represented by the resulting type. | |
532 | ||
533 | (the 9th paragraph) | |
534 | ||
535 | which I read as "unsigned ints wrap." | |
536 | ||
537 | signed integer overflow seems to be classed as "exception condition" | |
538 | ||
539 | If an exceptional condition occurs during the evaluation of an | |
540 | expression (that is, if the result is not mathematically defined or not | |
541 | in the range of representable values for its type), the behavior is | |
542 | undefined. | |
543 | ||
544 | (6.5, the 5th paragraph) | |
545 | ||
546 | I had assumed that on 2s complement machines signed arithmetic would | |
547 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
548 | everything perl builds on would be happy. After much wailing and | |
549 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
550 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
551 | unsigned code below is actually shorter than the old code. :-) | |
552 | */ | |
553 | ||
6f1401dc DM |
554 | SvIV_please_nomg(svr); |
555 | ||
800401ee | 556 | if (SvIOK(svr)) { |
28e5dec8 JH |
557 | /* Unless the left argument is integer in range we are going to have to |
558 | use NV maths. Hence only attempt to coerce the right argument if | |
559 | we know the left is integer. */ | |
9c5ffd7c JH |
560 | register UV auv = 0; |
561 | bool auvok = FALSE; | |
7dca457a NC |
562 | bool a_valid = 0; |
563 | ||
28e5dec8 | 564 | if (!useleft) { |
7dca457a NC |
565 | auv = 0; |
566 | a_valid = auvok = 1; | |
567 | /* left operand is undef, treat as zero. + 0 is identity, | |
568 | Could SETi or SETu right now, but space optimise by not adding | |
569 | lots of code to speed up what is probably a rarish case. */ | |
570 | } else { | |
571 | /* Left operand is defined, so is it IV? */ | |
6f1401dc | 572 | SvIV_please_nomg(svl); |
800401ee JH |
573 | if (SvIOK(svl)) { |
574 | if ((auvok = SvUOK(svl))) | |
575 | auv = SvUVX(svl); | |
7dca457a | 576 | else { |
800401ee | 577 | register const IV aiv = SvIVX(svl); |
7dca457a NC |
578 | if (aiv >= 0) { |
579 | auv = aiv; | |
580 | auvok = 1; /* Now acting as a sign flag. */ | |
581 | } else { /* 2s complement assumption for IV_MIN */ | |
582 | auv = (UV)-aiv; | |
583 | } | |
584 | } | |
585 | a_valid = 1; | |
28e5dec8 JH |
586 | } |
587 | } | |
7dca457a NC |
588 | if (a_valid) { |
589 | bool result_good = 0; | |
590 | UV result; | |
591 | register UV buv; | |
800401ee | 592 | bool buvok = SvUOK(svr); |
a00b5bd3 | 593 | |
7dca457a | 594 | if (buvok) |
800401ee | 595 | buv = SvUVX(svr); |
7dca457a | 596 | else { |
800401ee | 597 | register const IV biv = SvIVX(svr); |
7dca457a NC |
598 | if (biv >= 0) { |
599 | buv = biv; | |
600 | buvok = 1; | |
601 | } else | |
602 | buv = (UV)-biv; | |
603 | } | |
604 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 605 | else "IV" now, independent of how it came in. |
7dca457a NC |
606 | if a, b represents positive, A, B negative, a maps to -A etc |
607 | a + b => (a + b) | |
608 | A + b => -(a - b) | |
609 | a + B => (a - b) | |
610 | A + B => -(a + b) | |
611 | all UV maths. negate result if A negative. | |
612 | add if signs same, subtract if signs differ. */ | |
613 | ||
614 | if (auvok ^ buvok) { | |
615 | /* Signs differ. */ | |
616 | if (auv >= buv) { | |
617 | result = auv - buv; | |
618 | /* Must get smaller */ | |
619 | if (result <= auv) | |
620 | result_good = 1; | |
621 | } else { | |
622 | result = buv - auv; | |
623 | if (result <= buv) { | |
624 | /* result really should be -(auv-buv). as its negation | |
625 | of true value, need to swap our result flag */ | |
626 | auvok = !auvok; | |
627 | result_good = 1; | |
28e5dec8 JH |
628 | } |
629 | } | |
7dca457a NC |
630 | } else { |
631 | /* Signs same */ | |
632 | result = auv + buv; | |
633 | if (result >= auv) | |
634 | result_good = 1; | |
635 | } | |
636 | if (result_good) { | |
637 | SP--; | |
638 | if (auvok) | |
28e5dec8 | 639 | SETu( result ); |
7dca457a NC |
640 | else { |
641 | /* Negate result */ | |
642 | if (result <= (UV)IV_MIN) | |
643 | SETi( -(IV)result ); | |
644 | else { | |
645 | /* result valid, but out of range for IV. */ | |
646 | SETn( -(NV)result ); | |
28e5dec8 JH |
647 | } |
648 | } | |
7dca457a NC |
649 | RETURN; |
650 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
651 | } |
652 | } | |
653 | #endif | |
a0d0e21e | 654 | { |
6f1401dc | 655 | NV value = SvNV_nomg(svr); |
4efa5a16 | 656 | (void)POPs; |
28e5dec8 JH |
657 | if (!useleft) { |
658 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
659 | SETn(value); | |
660 | RETURN; | |
661 | } | |
6f1401dc | 662 | SETn( value + SvNV_nomg(svl) ); |
28e5dec8 | 663 | RETURN; |
a0d0e21e LW |
664 | } |
665 | } | |
666 | ||
667 | PP(pp_aelemfast) | |
668 | { | |
97aff369 | 669 | dVAR; dSP; |
502c6561 NC |
670 | AV * const av = PL_op->op_flags & OPf_SPECIAL |
671 | ? MUTABLE_AV(PAD_SV(PL_op->op_targ)) : GvAV(cGVOP_gv); | |
a3b680e6 | 672 | const U32 lval = PL_op->op_flags & OPf_MOD; |
0bd48802 | 673 | SV** const svp = av_fetch(av, PL_op->op_private, lval); |
3280af22 | 674 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 675 | EXTEND(SP, 1); |
39cf747a | 676 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 677 | mg_get(sv); |
be6c24e0 | 678 | PUSHs(sv); |
a0d0e21e LW |
679 | RETURN; |
680 | } | |
681 | ||
682 | PP(pp_join) | |
683 | { | |
97aff369 | 684 | dVAR; dSP; dMARK; dTARGET; |
a0d0e21e LW |
685 | MARK++; |
686 | do_join(TARG, *MARK, MARK, SP); | |
687 | SP = MARK; | |
688 | SETs(TARG); | |
689 | RETURN; | |
690 | } | |
691 | ||
692 | PP(pp_pushre) | |
693 | { | |
97aff369 | 694 | dVAR; dSP; |
44a8e56a | 695 | #ifdef DEBUGGING |
696 | /* | |
697 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
698 | * will be enough to hold an OP*. | |
699 | */ | |
c4420975 | 700 | SV* const sv = sv_newmortal(); |
44a8e56a | 701 | sv_upgrade(sv, SVt_PVLV); |
702 | LvTYPE(sv) = '/'; | |
533c011a | 703 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 704 | XPUSHs(sv); |
705 | #else | |
ad64d0ec | 706 | XPUSHs(MUTABLE_SV(PL_op)); |
44a8e56a | 707 | #endif |
a0d0e21e LW |
708 | RETURN; |
709 | } | |
710 | ||
711 | /* Oversized hot code. */ | |
712 | ||
713 | PP(pp_print) | |
714 | { | |
27da23d5 | 715 | dVAR; dSP; dMARK; dORIGMARK; |
a0d0e21e | 716 | IO *io; |
760ac839 | 717 | register PerlIO *fp; |
236988e4 | 718 | MAGIC *mg; |
159b6efe NC |
719 | GV * const gv |
720 | = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv; | |
5b468f54 AMS |
721 | |
722 | if (gv && (io = GvIO(gv)) | |
ad64d0ec | 723 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
5b468f54 | 724 | { |
01bb7c6d | 725 | had_magic: |
68dc0745 | 726 | if (MARK == ORIGMARK) { |
1c846c1f | 727 | /* If using default handle then we need to make space to |
a60c0954 NIS |
728 | * pass object as 1st arg, so move other args up ... |
729 | */ | |
4352c267 | 730 | MEXTEND(SP, 1); |
68dc0745 | 731 | ++MARK; |
732 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
733 | ++SP; | |
734 | } | |
735 | PUSHMARK(MARK - 1); | |
ad64d0ec | 736 | *MARK = SvTIED_obj(MUTABLE_SV(io), mg); |
68dc0745 | 737 | PUTBACK; |
d343c3ef | 738 | ENTER_with_name("call_PRINT"); |
3a28f3fb MS |
739 | if( PL_op->op_type == OP_SAY ) { |
740 | /* local $\ = "\n" */ | |
084e50c2 | 741 | SAVEGENERICSV(PL_ors_sv); |
3a28f3fb MS |
742 | PL_ors_sv = newSVpvs("\n"); |
743 | } | |
864dbfa3 | 744 | call_method("PRINT", G_SCALAR); |
d343c3ef | 745 | LEAVE_with_name("call_PRINT"); |
236988e4 | 746 | SPAGAIN; |
68dc0745 | 747 | MARK = ORIGMARK + 1; |
748 | *MARK = *SP; | |
749 | SP = MARK; | |
236988e4 | 750 | RETURN; |
751 | } | |
a0d0e21e | 752 | if (!(io = GvIO(gv))) { |
099be4f1 | 753 | if ((GvEGVx(gv)) && (io = GvIO(GvEGV(gv))) |
ad64d0ec | 754 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
01bb7c6d | 755 | goto had_magic; |
2dd78f96 JH |
756 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
757 | report_evil_fh(gv, io, PL_op->op_type); | |
93189314 | 758 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
759 | goto just_say_no; |
760 | } | |
761 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 762 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 NC |
763 | if (IoIFP(io)) |
764 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); | |
2dd78f96 | 765 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f | 766 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e | 767 | } |
93189314 | 768 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e LW |
769 | goto just_say_no; |
770 | } | |
771 | else { | |
e23d9e2f | 772 | SV * const ofs = GvSV(PL_ofsgv); /* $, */ |
a0d0e21e | 773 | MARK++; |
e23d9e2f | 774 | if (ofs && (SvGMAGICAL(ofs) || SvOK(ofs))) { |
a0d0e21e LW |
775 | while (MARK <= SP) { |
776 | if (!do_print(*MARK, fp)) | |
777 | break; | |
778 | MARK++; | |
779 | if (MARK <= SP) { | |
e23d9e2f CS |
780 | /* don't use 'ofs' here - it may be invalidated by magic callbacks */ |
781 | if (!do_print(GvSV(PL_ofsgv), fp)) { | |
a0d0e21e LW |
782 | MARK--; |
783 | break; | |
784 | } | |
785 | } | |
786 | } | |
787 | } | |
788 | else { | |
789 | while (MARK <= SP) { | |
790 | if (!do_print(*MARK, fp)) | |
791 | break; | |
792 | MARK++; | |
793 | } | |
794 | } | |
795 | if (MARK <= SP) | |
796 | goto just_say_no; | |
797 | else { | |
cfc4a7da GA |
798 | if (PL_op->op_type == OP_SAY) { |
799 | if (PerlIO_write(fp, "\n", 1) == 0 || PerlIO_error(fp)) | |
800 | goto just_say_no; | |
801 | } | |
802 | else if (PL_ors_sv && SvOK(PL_ors_sv)) | |
7889fe52 | 803 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
a0d0e21e LW |
804 | goto just_say_no; |
805 | ||
806 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 807 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
808 | goto just_say_no; |
809 | } | |
810 | } | |
811 | SP = ORIGMARK; | |
e52fd6f4 | 812 | XPUSHs(&PL_sv_yes); |
a0d0e21e LW |
813 | RETURN; |
814 | ||
815 | just_say_no: | |
816 | SP = ORIGMARK; | |
e52fd6f4 | 817 | XPUSHs(&PL_sv_undef); |
a0d0e21e LW |
818 | RETURN; |
819 | } | |
820 | ||
821 | PP(pp_rv2av) | |
822 | { | |
97aff369 | 823 | dVAR; dSP; dTOPss; |
cde874ca | 824 | const I32 gimme = GIMME_V; |
17ab7946 NC |
825 | static const char an_array[] = "an ARRAY"; |
826 | static const char a_hash[] = "a HASH"; | |
827 | const bool is_pp_rv2av = PL_op->op_type == OP_RV2AV; | |
d83b45b8 | 828 | const svtype type = is_pp_rv2av ? SVt_PVAV : SVt_PVHV; |
a0d0e21e | 829 | |
0824d667 DM |
830 | if (!(PL_op->op_private & OPpDEREFed)) |
831 | SvGETMAGIC(sv); | |
a0d0e21e | 832 | if (SvROK(sv)) { |
17ab7946 | 833 | tryAMAGICunDEREF_var(is_pp_rv2av ? to_av_amg : to_hv_amg); |
f5284f61 | 834 | |
17ab7946 NC |
835 | sv = SvRV(sv); |
836 | if (SvTYPE(sv) != type) | |
837 | DIE(aTHX_ "Not %s reference", is_pp_rv2av ? an_array : a_hash); | |
533c011a | 838 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 839 | SETs(sv); |
a0d0e21e LW |
840 | RETURN; |
841 | } | |
78f9721b | 842 | else if (LVRET) { |
cde874ca | 843 | if (gimme != G_ARRAY) |
042560a6 | 844 | goto croak_cant_return; |
17ab7946 | 845 | SETs(sv); |
78f9721b SM |
846 | RETURN; |
847 | } | |
82d03984 RGS |
848 | else if (PL_op->op_flags & OPf_MOD |
849 | && PL_op->op_private & OPpLVAL_INTRO) | |
f1f66076 | 850 | Perl_croak(aTHX_ "%s", PL_no_localize_ref); |
a0d0e21e LW |
851 | } |
852 | else { | |
17ab7946 | 853 | if (SvTYPE(sv) == type) { |
533c011a | 854 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 855 | SETs(sv); |
a0d0e21e LW |
856 | RETURN; |
857 | } | |
78f9721b | 858 | else if (LVRET) { |
cde874ca | 859 | if (gimme != G_ARRAY) |
042560a6 | 860 | goto croak_cant_return; |
17ab7946 | 861 | SETs(sv); |
78f9721b SM |
862 | RETURN; |
863 | } | |
a0d0e21e LW |
864 | } |
865 | else { | |
67955e0c | 866 | GV *gv; |
1c846c1f | 867 | |
6e592b3a | 868 | if (!isGV_with_GP(sv)) { |
dc3c76f8 NC |
869 | gv = Perl_softref2xv(aTHX_ sv, is_pp_rv2av ? an_array : a_hash, |
870 | type, &sp); | |
871 | if (!gv) | |
872 | RETURN; | |
35cd451c GS |
873 | } |
874 | else { | |
159b6efe | 875 | gv = MUTABLE_GV(sv); |
a0d0e21e | 876 | } |
ad64d0ec | 877 | sv = is_pp_rv2av ? MUTABLE_SV(GvAVn(gv)) : MUTABLE_SV(GvHVn(gv)); |
533c011a | 878 | if (PL_op->op_private & OPpLVAL_INTRO) |
ad64d0ec | 879 | sv = is_pp_rv2av ? MUTABLE_SV(save_ary(gv)) : MUTABLE_SV(save_hash(gv)); |
533c011a | 880 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 881 | SETs(sv); |
a0d0e21e LW |
882 | RETURN; |
883 | } | |
78f9721b | 884 | else if (LVRET) { |
cde874ca | 885 | if (gimme != G_ARRAY) |
042560a6 | 886 | goto croak_cant_return; |
17ab7946 | 887 | SETs(sv); |
78f9721b SM |
888 | RETURN; |
889 | } | |
a0d0e21e LW |
890 | } |
891 | } | |
892 | ||
17ab7946 | 893 | if (is_pp_rv2av) { |
502c6561 | 894 | AV *const av = MUTABLE_AV(sv); |
17ab7946 NC |
895 | /* The guts of pp_rv2av, with no intenting change to preserve history |
896 | (until such time as we get tools that can do blame annotation across | |
897 | whitespace changes. */ | |
cde874ca | 898 | if (gimme == G_ARRAY) { |
a3b680e6 | 899 | const I32 maxarg = AvFILL(av) + 1; |
c2444246 | 900 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f | 901 | EXTEND(SP, maxarg); |
93965878 | 902 | if (SvRMAGICAL(av)) { |
1c846c1f | 903 | U32 i; |
eb160463 | 904 | for (i=0; i < (U32)maxarg; i++) { |
0bcc34c2 | 905 | SV ** const svp = av_fetch(av, i, FALSE); |
547d1dd8 HS |
906 | /* See note in pp_helem, and bug id #27839 */ |
907 | SP[i+1] = svp | |
fd69380d | 908 | ? SvGMAGICAL(*svp) ? (mg_get(*svp), *svp) : *svp |
547d1dd8 | 909 | : &PL_sv_undef; |
93965878 | 910 | } |
1c846c1f | 911 | } |
93965878 NIS |
912 | else { |
913 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
914 | } | |
a0d0e21e LW |
915 | SP += maxarg; |
916 | } | |
cde874ca | 917 | else if (gimme == G_SCALAR) { |
a0d0e21e | 918 | dTARGET; |
a3b680e6 | 919 | const I32 maxarg = AvFILL(av) + 1; |
f5284f61 | 920 | SETi(maxarg); |
a0d0e21e | 921 | } |
17ab7946 NC |
922 | } else { |
923 | /* The guts of pp_rv2hv */ | |
be85d344 | 924 | if (gimme == G_ARRAY) { /* array wanted */ |
17ab7946 | 925 | *PL_stack_sp = sv; |
cea2e8a9 | 926 | return do_kv(); |
a0d0e21e | 927 | } |
be85d344 | 928 | else if (gimme == G_SCALAR) { |
a0d0e21e | 929 | dTARGET; |
85fbaab2 | 930 | TARG = Perl_hv_scalar(aTHX_ MUTABLE_HV(sv)); |
5e17dd7d | 931 | SPAGAIN; |
a0d0e21e | 932 | SETTARG; |
a0d0e21e | 933 | } |
17ab7946 | 934 | } |
be85d344 | 935 | RETURN; |
042560a6 NC |
936 | |
937 | croak_cant_return: | |
938 | Perl_croak(aTHX_ "Can't return %s to lvalue scalar context", | |
939 | is_pp_rv2av ? "array" : "hash"); | |
77e217c6 | 940 | RETURN; |
a0d0e21e LW |
941 | } |
942 | ||
10c8fecd GS |
943 | STATIC void |
944 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
945 | { | |
97aff369 | 946 | dVAR; |
7918f24d NC |
947 | |
948 | PERL_ARGS_ASSERT_DO_ODDBALL; | |
949 | ||
10c8fecd GS |
950 | if (*relem) { |
951 | SV *tmpstr; | |
b464bac0 | 952 | const HE *didstore; |
6d822dc4 MS |
953 | |
954 | if (ckWARN(WARN_MISC)) { | |
a3b680e6 | 955 | const char *err; |
10c8fecd GS |
956 | if (relem == firstrelem && |
957 | SvROK(*relem) && | |
958 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
959 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
960 | { | |
a3b680e6 | 961 | err = "Reference found where even-sized list expected"; |
10c8fecd GS |
962 | } |
963 | else | |
a3b680e6 | 964 | err = "Odd number of elements in hash assignment"; |
f1f66076 | 965 | Perl_warner(aTHX_ packWARN(WARN_MISC), "%s", err); |
10c8fecd | 966 | } |
6d822dc4 | 967 | |
561b68a9 | 968 | tmpstr = newSV(0); |
6d822dc4 MS |
969 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
970 | if (SvMAGICAL(hash)) { | |
971 | if (SvSMAGICAL(tmpstr)) | |
972 | mg_set(tmpstr); | |
973 | if (!didstore) | |
974 | sv_2mortal(tmpstr); | |
975 | } | |
976 | TAINT_NOT; | |
10c8fecd GS |
977 | } |
978 | } | |
979 | ||
a0d0e21e LW |
980 | PP(pp_aassign) |
981 | { | |
27da23d5 | 982 | dVAR; dSP; |
3280af22 NIS |
983 | SV **lastlelem = PL_stack_sp; |
984 | SV **lastrelem = PL_stack_base + POPMARK; | |
985 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
986 | SV **firstlelem = lastrelem + 1; |
987 | ||
988 | register SV **relem; | |
989 | register SV **lelem; | |
990 | ||
991 | register SV *sv; | |
992 | register AV *ary; | |
993 | ||
54310121 | 994 | I32 gimme; |
a0d0e21e LW |
995 | HV *hash; |
996 | I32 i; | |
997 | int magic; | |
ca65944e | 998 | int duplicates = 0; |
cbbf8932 | 999 | SV **firsthashrelem = NULL; /* "= 0" keeps gcc 2.95 quiet */ |
5637b936 | 1000 | |
3280af22 | 1001 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
ca65944e | 1002 | gimme = GIMME_V; |
a0d0e21e LW |
1003 | |
1004 | /* If there's a common identifier on both sides we have to take | |
1005 | * special care that assigning the identifier on the left doesn't | |
1006 | * clobber a value on the right that's used later in the list. | |
1007 | */ | |
10c8fecd | 1008 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 | 1009 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd | 1010 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
155aba94 | 1011 | if ((sv = *relem)) { |
a1f49e72 | 1012 | TAINT_NOT; /* Each item is independent */ |
61e5f455 NC |
1013 | |
1014 | /* Dear TODO test in t/op/sort.t, I love you. | |
1015 | (It's relying on a panic, not a "semi-panic" from newSVsv() | |
1016 | and then an assertion failure below.) */ | |
1017 | if (SvIS_FREED(sv)) { | |
1018 | Perl_croak(aTHX_ "panic: attempt to copy freed scalar %p", | |
1019 | (void*)sv); | |
1020 | } | |
1021 | /* Specifically *not* sv_mortalcopy(), as that will steal TEMPs, | |
1022 | and we need a second copy of a temp here. */ | |
1023 | *relem = sv_2mortal(newSVsv(sv)); | |
a1f49e72 | 1024 | } |
10c8fecd | 1025 | } |
a0d0e21e LW |
1026 | } |
1027 | ||
1028 | relem = firstrelem; | |
1029 | lelem = firstlelem; | |
4608196e RGS |
1030 | ary = NULL; |
1031 | hash = NULL; | |
10c8fecd | 1032 | |
a0d0e21e | 1033 | while (lelem <= lastlelem) { |
bbce6d69 | 1034 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
1035 | sv = *lelem++; |
1036 | switch (SvTYPE(sv)) { | |
1037 | case SVt_PVAV: | |
502c6561 | 1038 | ary = MUTABLE_AV(sv); |
748a9306 | 1039 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e | 1040 | av_clear(ary); |
7e42bd57 | 1041 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1042 | i = 0; |
1043 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1044 | SV **didstore; |
a0d0e21e | 1045 | assert(*relem); |
4f0556e9 NC |
1046 | sv = newSV(0); |
1047 | sv_setsv(sv, *relem); | |
a0d0e21e | 1048 | *(relem++) = sv; |
5117ca91 GS |
1049 | didstore = av_store(ary,i++,sv); |
1050 | if (magic) { | |
8ef24240 | 1051 | if (SvSMAGICAL(sv)) |
fb73857a | 1052 | mg_set(sv); |
5117ca91 | 1053 | if (!didstore) |
8127e0e3 | 1054 | sv_2mortal(sv); |
5117ca91 | 1055 | } |
bbce6d69 | 1056 | TAINT_NOT; |
a0d0e21e | 1057 | } |
354b0578 | 1058 | if (PL_delaymagic & DM_ARRAY_ISA) |
ad64d0ec | 1059 | SvSETMAGIC(MUTABLE_SV(ary)); |
a0d0e21e | 1060 | break; |
10c8fecd | 1061 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e LW |
1062 | SV *tmpstr; |
1063 | ||
85fbaab2 | 1064 | hash = MUTABLE_HV(sv); |
748a9306 | 1065 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e | 1066 | hv_clear(hash); |
ca65944e | 1067 | firsthashrelem = relem; |
a0d0e21e LW |
1068 | |
1069 | while (relem < lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1070 | HE *didstore; |
6136c704 AL |
1071 | sv = *relem ? *relem : &PL_sv_no; |
1072 | relem++; | |
561b68a9 | 1073 | tmpstr = newSV(0); |
a0d0e21e LW |
1074 | if (*relem) |
1075 | sv_setsv(tmpstr,*relem); /* value */ | |
1076 | *(relem++) = tmpstr; | |
ca65944e RGS |
1077 | if (gimme != G_VOID && hv_exists_ent(hash, sv, 0)) |
1078 | /* key overwrites an existing entry */ | |
1079 | duplicates += 2; | |
5117ca91 GS |
1080 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1081 | if (magic) { | |
8ef24240 | 1082 | if (SvSMAGICAL(tmpstr)) |
fb73857a | 1083 | mg_set(tmpstr); |
5117ca91 | 1084 | if (!didstore) |
8127e0e3 | 1085 | sv_2mortal(tmpstr); |
5117ca91 | 1086 | } |
bbce6d69 | 1087 | TAINT_NOT; |
8e07c86e | 1088 | } |
6a0deba8 | 1089 | if (relem == lastrelem) { |
10c8fecd | 1090 | do_oddball(hash, relem, firstrelem); |
6a0deba8 | 1091 | relem++; |
1930e939 | 1092 | } |
a0d0e21e LW |
1093 | } |
1094 | break; | |
1095 | default: | |
6fc92669 GS |
1096 | if (SvIMMORTAL(sv)) { |
1097 | if (relem <= lastrelem) | |
1098 | relem++; | |
1099 | break; | |
a0d0e21e LW |
1100 | } |
1101 | if (relem <= lastrelem) { | |
1102 | sv_setsv(sv, *relem); | |
1103 | *(relem++) = sv; | |
1104 | } | |
1105 | else | |
3280af22 | 1106 | sv_setsv(sv, &PL_sv_undef); |
8ef24240 | 1107 | SvSETMAGIC(sv); |
a0d0e21e LW |
1108 | break; |
1109 | } | |
1110 | } | |
3280af22 NIS |
1111 | if (PL_delaymagic & ~DM_DELAY) { |
1112 | if (PL_delaymagic & DM_UID) { | |
a0d0e21e | 1113 | #ifdef HAS_SETRESUID |
fb934a90 RD |
1114 | (void)setresuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1115 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1, | |
1116 | (Uid_t)-1); | |
56febc5e AD |
1117 | #else |
1118 | # ifdef HAS_SETREUID | |
fb934a90 RD |
1119 | (void)setreuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1120 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1); | |
56febc5e AD |
1121 | # else |
1122 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
1123 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1124 | (void)setruid(PL_uid); | |
1125 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 1126 | } |
56febc5e AD |
1127 | # endif /* HAS_SETRUID */ |
1128 | # ifdef HAS_SETEUID | |
b28d0864 | 1129 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
fb934a90 | 1130 | (void)seteuid(PL_euid); |
b28d0864 | 1131 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e | 1132 | } |
56febc5e | 1133 | # endif /* HAS_SETEUID */ |
b28d0864 NIS |
1134 | if (PL_delaymagic & DM_UID) { |
1135 | if (PL_uid != PL_euid) | |
cea2e8a9 | 1136 | DIE(aTHX_ "No setreuid available"); |
b28d0864 | 1137 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e | 1138 | } |
56febc5e AD |
1139 | # endif /* HAS_SETREUID */ |
1140 | #endif /* HAS_SETRESUID */ | |
d8eceb89 JH |
1141 | PL_uid = PerlProc_getuid(); |
1142 | PL_euid = PerlProc_geteuid(); | |
a0d0e21e | 1143 | } |
3280af22 | 1144 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1145 | #ifdef HAS_SETRESGID |
fb934a90 RD |
1146 | (void)setresgid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1147 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1, | |
1148 | (Gid_t)-1); | |
56febc5e AD |
1149 | #else |
1150 | # ifdef HAS_SETREGID | |
fb934a90 RD |
1151 | (void)setregid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1152 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1); | |
56febc5e AD |
1153 | # else |
1154 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
1155 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1156 | (void)setrgid(PL_gid); | |
1157 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 1158 | } |
56febc5e AD |
1159 | # endif /* HAS_SETRGID */ |
1160 | # ifdef HAS_SETEGID | |
b28d0864 | 1161 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
fb934a90 | 1162 | (void)setegid(PL_egid); |
b28d0864 | 1163 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e | 1164 | } |
56febc5e | 1165 | # endif /* HAS_SETEGID */ |
b28d0864 NIS |
1166 | if (PL_delaymagic & DM_GID) { |
1167 | if (PL_gid != PL_egid) | |
cea2e8a9 | 1168 | DIE(aTHX_ "No setregid available"); |
b28d0864 | 1169 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e | 1170 | } |
56febc5e AD |
1171 | # endif /* HAS_SETREGID */ |
1172 | #endif /* HAS_SETRESGID */ | |
d8eceb89 JH |
1173 | PL_gid = PerlProc_getgid(); |
1174 | PL_egid = PerlProc_getegid(); | |
a0d0e21e | 1175 | } |
3280af22 | 1176 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e | 1177 | } |
3280af22 | 1178 | PL_delaymagic = 0; |
54310121 | 1179 | |
54310121 | 1180 | if (gimme == G_VOID) |
1181 | SP = firstrelem - 1; | |
1182 | else if (gimme == G_SCALAR) { | |
1183 | dTARGET; | |
1184 | SP = firstrelem; | |
ca65944e | 1185 | SETi(lastrelem - firstrelem + 1 - duplicates); |
54310121 | 1186 | } |
1187 | else { | |
ca65944e | 1188 | if (ary) |
a0d0e21e | 1189 | SP = lastrelem; |
ca65944e RGS |
1190 | else if (hash) { |
1191 | if (duplicates) { | |
1192 | /* Removes from the stack the entries which ended up as | |
1193 | * duplicated keys in the hash (fix for [perl #24380]) */ | |
1194 | Move(firsthashrelem + duplicates, | |
1195 | firsthashrelem, duplicates, SV**); | |
1196 | lastrelem -= duplicates; | |
1197 | } | |
1198 | SP = lastrelem; | |
1199 | } | |
a0d0e21e LW |
1200 | else |
1201 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 1202 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 1203 | while (relem <= SP) |
3280af22 | 1204 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 1205 | } |
08aeb9f7 | 1206 | |
54310121 | 1207 | RETURN; |
a0d0e21e LW |
1208 | } |
1209 | ||
8782bef2 GB |
1210 | PP(pp_qr) |
1211 | { | |
97aff369 | 1212 | dVAR; dSP; |
c4420975 | 1213 | register PMOP * const pm = cPMOP; |
fe578d7f | 1214 | REGEXP * rx = PM_GETRE(pm); |
10599a69 | 1215 | SV * const pkg = rx ? CALLREG_PACKAGE(rx) : NULL; |
c4420975 | 1216 | SV * const rv = sv_newmortal(); |
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 | ||
1228 | if (pkg) { | |
f815daf2 | 1229 | HV *const stash = gv_stashsv(pkg, GV_ADD); |
a954f6ee | 1230 | SvREFCNT_dec(pkg); |
288b8c02 NC |
1231 | (void)sv_bless(rv, stash); |
1232 | } | |
1233 | ||
07bc277f | 1234 | if (RX_EXTFLAGS(rx) & RXf_TAINTED) |
e08e52cf | 1235 | SvTAINTED_on(rv); |
c8c13c22 JB |
1236 | XPUSHs(rv); |
1237 | RETURN; | |
8782bef2 GB |
1238 | } |
1239 | ||
a0d0e21e LW |
1240 | PP(pp_match) |
1241 | { | |
97aff369 | 1242 | dVAR; dSP; dTARG; |
a0d0e21e | 1243 | register PMOP *pm = cPMOP; |
d65afb4b | 1244 | PMOP *dynpm = pm; |
0d46e09a SP |
1245 | register const char *t; |
1246 | register const char *s; | |
5c144d81 | 1247 | const char *strend; |
a0d0e21e | 1248 | I32 global; |
1ed74d04 | 1249 | U8 r_flags = REXEC_CHECKED; |
5c144d81 | 1250 | const char *truebase; /* Start of string */ |
aaa362c4 | 1251 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1252 | bool rxtainted; |
a3b680e6 | 1253 | const I32 gimme = GIMME; |
a0d0e21e | 1254 | STRLEN len; |
748a9306 | 1255 | I32 minmatch = 0; |
a3b680e6 | 1256 | const I32 oldsave = PL_savestack_ix; |
f86702cc | 1257 | I32 update_minmatch = 1; |
e60df1fa | 1258 | I32 had_zerolen = 0; |
58e23c8d | 1259 | U32 gpos = 0; |
a0d0e21e | 1260 | |
533c011a | 1261 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1262 | TARG = POPs; |
59f00321 RGS |
1263 | else if (PL_op->op_private & OPpTARGET_MY) |
1264 | GETTARGET; | |
a0d0e21e | 1265 | else { |
54b9620d | 1266 | TARG = DEFSV; |
a0d0e21e LW |
1267 | EXTEND(SP,1); |
1268 | } | |
d9f424b2 | 1269 | |
c277df42 | 1270 | PUTBACK; /* EVAL blocks need stack_sp. */ |
69dc4b30 FC |
1271 | /* Skip get-magic if this is a qr// clone, because regcomp has |
1272 | already done it. */ | |
1273 | s = ((struct regexp *)SvANY(rx))->mother_re | |
1274 | ? SvPV_nomg_const(TARG, len) | |
1275 | : SvPV_const(TARG, len); | |
a0d0e21e | 1276 | if (!s) |
2269b42e | 1277 | DIE(aTHX_ "panic: pp_match"); |
890ce7af | 1278 | strend = s + len; |
07bc277f | 1279 | rxtainted = ((RX_EXTFLAGS(rx) & RXf_TAINTED) || |
3280af22 | 1280 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 1281 | TAINT_NOT; |
a0d0e21e | 1282 | |
a30b2f1f | 1283 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 1284 | |
d65afb4b | 1285 | /* PMdf_USED is set after a ?? matches once */ |
c737faaf YO |
1286 | if ( |
1287 | #ifdef USE_ITHREADS | |
1288 | SvREADONLY(PL_regex_pad[pm->op_pmoffset]) | |
1289 | #else | |
1290 | pm->op_pmflags & PMf_USED | |
1291 | #endif | |
1292 | ) { | |
c277df42 | 1293 | failure: |
a0d0e21e LW |
1294 | if (gimme == G_ARRAY) |
1295 | RETURN; | |
1296 | RETPUSHNO; | |
1297 | } | |
1298 | ||
c737faaf YO |
1299 | |
1300 | ||
d65afb4b | 1301 | /* empty pattern special-cased to use last successful pattern if possible */ |
220fc49f | 1302 | if (!RX_PRELEN(rx) && PL_curpm) { |
3280af22 | 1303 | pm = PL_curpm; |
aaa362c4 | 1304 | rx = PM_GETRE(pm); |
a0d0e21e | 1305 | } |
d65afb4b | 1306 | |
07bc277f | 1307 | if (RX_MINLEN(rx) > (I32)len) |
d65afb4b | 1308 | goto failure; |
c277df42 | 1309 | |
a0d0e21e | 1310 | truebase = t = s; |
ad94a511 IZ |
1311 | |
1312 | /* XXXX What part of this is needed with true \G-support? */ | |
d65afb4b | 1313 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
07bc277f | 1314 | RX_OFFS(rx)[0].start = -1; |
a0d0e21e | 1315 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
c445ea15 | 1316 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 | 1317 | if (mg && mg->mg_len >= 0) { |
07bc277f NC |
1318 | if (!(RX_EXTFLAGS(rx) & RXf_GPOS_SEEN)) |
1319 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; | |
1320 | else if (RX_EXTFLAGS(rx) & RXf_ANCH_GPOS) { | |
0ef3e39e | 1321 | r_flags |= REXEC_IGNOREPOS; |
07bc277f NC |
1322 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; |
1323 | } else if (RX_EXTFLAGS(rx) & RXf_GPOS_FLOAT) | |
58e23c8d YO |
1324 | gpos = mg->mg_len; |
1325 | else | |
07bc277f NC |
1326 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; |
1327 | minmatch = (mg->mg_flags & MGf_MINMATCH) ? RX_GOFS(rx) + 1 : 0; | |
f86702cc | 1328 | update_minmatch = 0; |
748a9306 | 1329 | } |
a0d0e21e LW |
1330 | } |
1331 | } | |
a229a030 | 1332 | /* XXX: comment out !global get safe $1 vars after a |
62e7980d | 1333 | match, BUT be aware that this leads to dramatic slowdowns on |
a229a030 YO |
1334 | /g matches against large strings. So far a solution to this problem |
1335 | appears to be quite tricky. | |
1336 | Test for the unsafe vars are TODO for now. */ | |
07bc277f | 1337 | if (( !global && RX_NPARENS(rx)) |
cde0cee5 | 1338 | || SvTEMP(TARG) || PL_sawampersand || |
07bc277f | 1339 | (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY))) |
14977893 | 1340 | r_flags |= REXEC_COPY_STR; |
1c846c1f | 1341 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
1342 | r_flags |= REXEC_SCREAM; |
1343 | ||
a0d0e21e | 1344 | play_it_again: |
07bc277f NC |
1345 | if (global && RX_OFFS(rx)[0].start != -1) { |
1346 | t = s = RX_OFFS(rx)[0].end + truebase - RX_GOFS(rx); | |
1347 | if ((s + RX_MINLEN(rx)) > strend || s < truebase) | |
a0d0e21e | 1348 | goto nope; |
f86702cc | 1349 | if (update_minmatch++) |
e60df1fa | 1350 | minmatch = had_zerolen; |
a0d0e21e | 1351 | } |
07bc277f | 1352 | if (RX_EXTFLAGS(rx) & RXf_USE_INTUIT && |
3c8556c3 | 1353 | DO_UTF8(TARG) == (RX_UTF8(rx) != 0)) { |
5c144d81 NC |
1354 | /* FIXME - can PL_bostr be made const char *? */ |
1355 | PL_bostr = (char *)truebase; | |
f9f4320a | 1356 | s = CALLREG_INTUIT_START(rx, TARG, (char *)s, (char *)strend, r_flags, NULL); |
f722798b IZ |
1357 | |
1358 | if (!s) | |
1359 | goto nope; | |
07bc277f | 1360 | if ( (RX_EXTFLAGS(rx) & RXf_CHECK_ALL) |
14977893 | 1361 | && !PL_sawampersand |
07bc277f NC |
1362 | && !(RX_EXTFLAGS(rx) & RXf_PMf_KEEPCOPY) |
1363 | && ((RX_EXTFLAGS(rx) & RXf_NOSCAN) | |
1364 | || !((RX_EXTFLAGS(rx) & RXf_INTUIT_TAIL) | |
05b4157f GS |
1365 | && (r_flags & REXEC_SCREAM))) |
1366 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
f722798b | 1367 | goto yup; |
a0d0e21e | 1368 | } |
1f36f092 RB |
1369 | if (CALLREGEXEC(rx, (char*)s, (char *)strend, (char*)truebase, |
1370 | minmatch, TARG, NUM2PTR(void*, gpos), r_flags)) | |
bbce6d69 | 1371 | { |
3280af22 | 1372 | PL_curpm = pm; |
c737faaf YO |
1373 | if (dynpm->op_pmflags & PMf_ONCE) { |
1374 | #ifdef USE_ITHREADS | |
1375 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); | |
1376 | #else | |
1377 | dynpm->op_pmflags |= PMf_USED; | |
1378 | #endif | |
1379 | } | |
a0d0e21e LW |
1380 | goto gotcha; |
1381 | } | |
1382 | else | |
1383 | goto ret_no; | |
1384 | /*NOTREACHED*/ | |
1385 | ||
1386 | gotcha: | |
72311751 GS |
1387 | if (rxtainted) |
1388 | RX_MATCH_TAINTED_on(rx); | |
1389 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1390 | if (gimme == G_ARRAY) { |
07bc277f | 1391 | const I32 nparens = RX_NPARENS(rx); |
a3b680e6 | 1392 | I32 i = (global && !nparens) ? 1 : 0; |
a0d0e21e | 1393 | |
c277df42 | 1394 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1395 | EXTEND(SP, nparens + i); |
1396 | EXTEND_MORTAL(nparens + i); | |
1397 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e | 1398 | PUSHs(sv_newmortal()); |
07bc277f NC |
1399 | if ((RX_OFFS(rx)[i].start != -1) && RX_OFFS(rx)[i].end != -1 ) { |
1400 | const I32 len = RX_OFFS(rx)[i].end - RX_OFFS(rx)[i].start; | |
1401 | s = RX_OFFS(rx)[i].start + truebase; | |
1402 | if (RX_OFFS(rx)[i].end < 0 || RX_OFFS(rx)[i].start < 0 || | |
290deeac A |
1403 | len < 0 || len > strend - s) |
1404 | DIE(aTHX_ "panic: pp_match start/end pointers"); | |
a0d0e21e | 1405 | sv_setpvn(*SP, s, len); |
cce850e4 | 1406 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1407 | SvUTF8_on(*SP); |
a0d0e21e LW |
1408 | } |
1409 | } | |
1410 | if (global) { | |
d65afb4b | 1411 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
6136c704 | 1412 | MAGIC* mg = NULL; |
0af80b60 HS |
1413 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
1414 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1415 | if (!mg) { | |
d83f0a82 NC |
1416 | #ifdef PERL_OLD_COPY_ON_WRITE |
1417 | if (SvIsCOW(TARG)) | |
1418 | sv_force_normal_flags(TARG, 0); | |
1419 | #endif | |
1420 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1421 | &PL_vtbl_mglob, NULL, 0); | |
0af80b60 | 1422 | } |
07bc277f NC |
1423 | if (RX_OFFS(rx)[0].start != -1) { |
1424 | mg->mg_len = RX_OFFS(rx)[0].end; | |
1425 | if (RX_OFFS(rx)[0].start + RX_GOFS(rx) == (UV)RX_OFFS(rx)[0].end) | |
0af80b60 HS |
1426 | mg->mg_flags |= MGf_MINMATCH; |
1427 | else | |
1428 | mg->mg_flags &= ~MGf_MINMATCH; | |
1429 | } | |
1430 | } | |
07bc277f NC |
1431 | had_zerolen = (RX_OFFS(rx)[0].start != -1 |
1432 | && (RX_OFFS(rx)[0].start + RX_GOFS(rx) | |
1433 | == (UV)RX_OFFS(rx)[0].end)); | |
c277df42 | 1434 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1435 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1436 | goto play_it_again; |
1437 | } | |
ffc61ed2 | 1438 | else if (!nparens) |
bde848c5 | 1439 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1440 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1441 | RETURN; |
1442 | } | |
1443 | else { | |
1444 | if (global) { | |
cbbf8932 | 1445 | MAGIC* mg; |
a0d0e21e | 1446 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
14befaf4 | 1447 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
cbbf8932 AL |
1448 | else |
1449 | mg = NULL; | |
a0d0e21e | 1450 | if (!mg) { |
d83f0a82 NC |
1451 | #ifdef PERL_OLD_COPY_ON_WRITE |
1452 | if (SvIsCOW(TARG)) | |
1453 | sv_force_normal_flags(TARG, 0); | |
1454 | #endif | |
1455 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1456 | &PL_vtbl_mglob, NULL, 0); | |
a0d0e21e | 1457 | } |
07bc277f NC |
1458 | if (RX_OFFS(rx)[0].start != -1) { |
1459 | mg->mg_len = RX_OFFS(rx)[0].end; | |
1460 | if (RX_OFFS(rx)[0].start + RX_GOFS(rx) == (UV)RX_OFFS(rx)[0].end) | |
748a9306 LW |
1461 | mg->mg_flags |= MGf_MINMATCH; |
1462 | else | |
1463 | mg->mg_flags &= ~MGf_MINMATCH; | |
1464 | } | |
a0d0e21e | 1465 | } |
4633a7c4 | 1466 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1467 | RETPUSHYES; |
1468 | } | |
1469 | ||
f722798b | 1470 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1471 | if (rxtainted) |
1472 | RX_MATCH_TAINTED_on(rx); | |
1473 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1474 | PL_curpm = pm; |
c737faaf YO |
1475 | if (dynpm->op_pmflags & PMf_ONCE) { |
1476 | #ifdef USE_ITHREADS | |
1477 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); | |
1478 | #else | |
1479 | dynpm->op_pmflags |= PMf_USED; | |
1480 | #endif | |
1481 | } | |
cf93c79d | 1482 | if (RX_MATCH_COPIED(rx)) |
07bc277f | 1483 | Safefree(RX_SUBBEG(rx)); |
cf93c79d | 1484 | RX_MATCH_COPIED_off(rx); |
07bc277f | 1485 | RX_SUBBEG(rx) = NULL; |
a0d0e21e | 1486 | if (global) { |
5c144d81 | 1487 | /* FIXME - should rx->subbeg be const char *? */ |
07bc277f NC |
1488 | RX_SUBBEG(rx) = (char *) truebase; |
1489 | RX_OFFS(rx)[0].start = s - truebase; | |
a30b2f1f | 1490 | if (RX_MATCH_UTF8(rx)) { |
07bc277f NC |
1491 | char * const t = (char*)utf8_hop((U8*)s, RX_MINLENRET(rx)); |
1492 | RX_OFFS(rx)[0].end = t - truebase; | |
60aeb6fd NIS |
1493 | } |
1494 | else { | |
07bc277f | 1495 | RX_OFFS(rx)[0].end = s - truebase + RX_MINLENRET(rx); |
60aeb6fd | 1496 | } |
07bc277f | 1497 | RX_SUBLEN(rx) = strend - truebase; |
a0d0e21e | 1498 | goto gotcha; |
1c846c1f | 1499 | } |
07bc277f | 1500 | if (PL_sawampersand || RX_EXTFLAGS(rx) & RXf_PMf_KEEPCOPY) { |
14977893 | 1501 | I32 off; |
f8c7b90f | 1502 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
1503 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
1504 | if (DEBUG_C_TEST) { | |
1505 | PerlIO_printf(Perl_debug_log, | |
1506 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", | |
6c9570dc | 1507 | (int) SvTYPE(TARG), (void*)truebase, (void*)t, |
ed252734 NC |
1508 | (int)(t-truebase)); |
1509 | } | |
bdd9a1b1 NC |
1510 | RX_SAVED_COPY(rx) = sv_setsv_cow(RX_SAVED_COPY(rx), TARG); |
1511 | RX_SUBBEG(rx) | |
1512 | = (char *) SvPVX_const(RX_SAVED_COPY(rx)) + (t - truebase); | |
1513 | assert (SvPOKp(RX_SAVED_COPY(rx))); | |
ed252734 NC |
1514 | } else |
1515 | #endif | |
1516 | { | |
14977893 | 1517 | |
07bc277f | 1518 | RX_SUBBEG(rx) = savepvn(t, strend - t); |
f8c7b90f | 1519 | #ifdef PERL_OLD_COPY_ON_WRITE |
bdd9a1b1 | 1520 | RX_SAVED_COPY(rx) = NULL; |
ed252734 NC |
1521 | #endif |
1522 | } | |
07bc277f | 1523 | RX_SUBLEN(rx) = strend - t; |
14977893 | 1524 | RX_MATCH_COPIED_on(rx); |
07bc277f NC |
1525 | off = RX_OFFS(rx)[0].start = s - t; |
1526 | RX_OFFS(rx)[0].end = off + RX_MINLENRET(rx); | |
14977893 JH |
1527 | } |
1528 | else { /* startp/endp are used by @- @+. */ | |
07bc277f NC |
1529 | RX_OFFS(rx)[0].start = s - truebase; |
1530 | RX_OFFS(rx)[0].end = s - truebase + RX_MINLENRET(rx); | |
14977893 | 1531 | } |
07bc277f | 1532 | /* including RX_NPARENS(rx) in the below code seems highly suspicious. |
cde0cee5 | 1533 | -dmq */ |
07bc277f | 1534 | RX_NPARENS(rx) = RX_LASTPAREN(rx) = RX_LASTCLOSEPAREN(rx) = 0; /* used by @-, @+, and $^N */ |
4633a7c4 | 1535 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1536 | RETPUSHYES; |
1537 | ||
1538 | nope: | |
a0d0e21e | 1539 | ret_no: |
d65afb4b | 1540 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e | 1541 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
6136c704 | 1542 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1543 | if (mg) |
565764a8 | 1544 | mg->mg_len = -1; |
a0d0e21e LW |
1545 | } |
1546 | } | |
4633a7c4 | 1547 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1548 | if (gimme == G_ARRAY) |
1549 | RETURN; | |
1550 | RETPUSHNO; | |
1551 | } | |
1552 | ||
1553 | OP * | |
864dbfa3 | 1554 | Perl_do_readline(pTHX) |
a0d0e21e | 1555 | { |
27da23d5 | 1556 | dVAR; dSP; dTARGETSTACKED; |
a0d0e21e LW |
1557 | register SV *sv; |
1558 | STRLEN tmplen = 0; | |
1559 | STRLEN offset; | |
760ac839 | 1560 | PerlIO *fp; |
a3b680e6 AL |
1561 | register IO * const io = GvIO(PL_last_in_gv); |
1562 | register const I32 type = PL_op->op_type; | |
1563 | const I32 gimme = GIMME_V; | |
a0d0e21e | 1564 | |
6136c704 | 1565 | if (io) { |
ad64d0ec | 1566 | MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar); |
6136c704 AL |
1567 | if (mg) { |
1568 | PUSHMARK(SP); | |
ad64d0ec | 1569 | XPUSHs(SvTIED_obj(MUTABLE_SV(io), mg)); |
6136c704 | 1570 | PUTBACK; |
d343c3ef | 1571 | ENTER_with_name("call_READLINE"); |
6136c704 | 1572 | call_method("READLINE", gimme); |
d343c3ef | 1573 | LEAVE_with_name("call_READLINE"); |
6136c704 AL |
1574 | SPAGAIN; |
1575 | if (gimme == G_SCALAR) { | |
1576 | SV* const result = POPs; | |
1577 | SvSetSV_nosteal(TARG, result); | |
1578 | PUSHTARG; | |
1579 | } | |
1580 | RETURN; | |
0b7c7b4f | 1581 | } |
e79b0511 | 1582 | } |
4608196e | 1583 | fp = NULL; |
a0d0e21e LW |
1584 | if (io) { |
1585 | fp = IoIFP(io); | |
1586 | if (!fp) { | |
1587 | if (IoFLAGS(io) & IOf_ARGV) { | |
1588 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1589 | IoLINES(io) = 0; |
3280af22 | 1590 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1591 | IoFLAGS(io) &= ~IOf_START; |
4608196e | 1592 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,NULL); |
76f68e9b | 1593 | sv_setpvs(GvSVn(PL_last_in_gv), "-"); |
3280af22 | 1594 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d GS |
1595 | fp = IoIFP(io); |
1596 | goto have_fp; | |
a0d0e21e LW |
1597 | } |
1598 | } | |
3280af22 | 1599 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1600 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1601 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1602 | } |
1603 | } | |
0d44d22b NC |
1604 | else if (type == OP_GLOB) |
1605 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1606 | } |
1607 | else if (type == OP_GLOB) | |
1608 | SP--; | |
a00b5bd3 | 1609 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 | 1610 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 | 1611 | } |
a0d0e21e LW |
1612 | } |
1613 | if (!fp) { | |
041457d9 DM |
1614 | if ((!io || !(IoFLAGS(io) & IOf_START)) |
1615 | && ckWARN2(WARN_GLOB, WARN_CLOSED)) | |
1616 | { | |
3f4520fe | 1617 | if (type == OP_GLOB) |
9014280d | 1618 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a GS |
1619 | "glob failed (can't start child: %s)", |
1620 | Strerror(errno)); | |
69282e91 | 1621 | else |
bc37a18f | 1622 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe | 1623 | } |
54310121 | 1624 | if (gimme == G_SCALAR) { |
79628082 | 1625 | /* undef TARG, and push that undefined value */ |
ba92458f AE |
1626 | if (type != OP_RCATLINE) { |
1627 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1628 | SvOK_off(TARG); |
ba92458f | 1629 | } |
a0d0e21e LW |
1630 | PUSHTARG; |
1631 | } | |
1632 | RETURN; | |
1633 | } | |
a2008d6d | 1634 | have_fp: |
54310121 | 1635 | if (gimme == G_SCALAR) { |
a0d0e21e | 1636 | sv = TARG; |
0f722b55 RGS |
1637 | if (type == OP_RCATLINE && SvGMAGICAL(sv)) |
1638 | mg_get(sv); | |
48de12d9 RGS |
1639 | if (SvROK(sv)) { |
1640 | if (type == OP_RCATLINE) | |
1641 | SvPV_force_nolen(sv); | |
1642 | else | |
1643 | sv_unref(sv); | |
1644 | } | |
f7877b28 NC |
1645 | else if (isGV_with_GP(sv)) { |
1646 | SvPV_force_nolen(sv); | |
1647 | } | |
862a34c6 | 1648 | SvUPGRADE(sv, SVt_PV); |
a0d0e21e | 1649 | tmplen = SvLEN(sv); /* remember if already alloced */ |
f72e8700 JJ |
1650 | if (!tmplen && !SvREADONLY(sv)) { |
1651 | /* try short-buffering it. Please update t/op/readline.t | |
1652 | * if you change the growth length. | |
1653 | */ | |
1654 | Sv_Grow(sv, 80); | |
1655 | } | |
2b5e58c4 AMS |
1656 | offset = 0; |
1657 | if (type == OP_RCATLINE && SvOK(sv)) { | |
1658 | if (!SvPOK(sv)) { | |
8b6b16e7 | 1659 | SvPV_force_nolen(sv); |
2b5e58c4 | 1660 | } |
a0d0e21e | 1661 | offset = SvCUR(sv); |
2b5e58c4 | 1662 | } |
a0d0e21e | 1663 | } |
54310121 | 1664 | else { |
561b68a9 | 1665 | sv = sv_2mortal(newSV(80)); |
54310121 | 1666 | offset = 0; |
1667 | } | |
fbad3eb5 | 1668 | |
3887d568 AP |
1669 | /* This should not be marked tainted if the fp is marked clean */ |
1670 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1671 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1672 | TAINT; \ | |
1673 | SvTAINTED_on(sv); \ | |
1674 | } | |
1675 | ||
684bef36 | 1676 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1677 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1678 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1679 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1680 | |
a0d0e21e | 1681 | for (;;) { |
09e8efcc | 1682 | PUTBACK; |
fbad3eb5 | 1683 | if (!sv_gets(sv, fp, offset) |
2d726892 TF |
1684 | && (type == OP_GLOB |
1685 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
1686 | || PerlIO_error(fp))) | |
fbad3eb5 | 1687 | { |
760ac839 | 1688 | PerlIO_clearerr(fp); |
a0d0e21e | 1689 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1690 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1691 | if (fp) |
1692 | continue; | |
3280af22 | 1693 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1694 | } |
1695 | else if (type == OP_GLOB) { | |
a2a5de95 NC |
1696 | if (!do_close(PL_last_in_gv, FALSE)) { |
1697 | Perl_ck_warner(aTHX_ packWARN(WARN_GLOB), | |
1698 | "glob failed (child exited with status %d%s)", | |
1699 | (int)(STATUS_CURRENT >> 8), | |
1700 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); | |
4eb79ab5 | 1701 | } |
a0d0e21e | 1702 | } |
54310121 | 1703 | if (gimme == G_SCALAR) { |
ba92458f AE |
1704 | if (type != OP_RCATLINE) { |
1705 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1706 | SvOK_off(TARG); |
ba92458f | 1707 | } |
09e8efcc | 1708 | SPAGAIN; |
a0d0e21e LW |
1709 | PUSHTARG; |
1710 | } | |
3887d568 | 1711 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1712 | RETURN; |
1713 | } | |
3887d568 | 1714 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1715 | IoLINES(io)++; |
b9fee9ba | 1716 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1717 | SvSETMAGIC(sv); |
09e8efcc | 1718 | SPAGAIN; |
a0d0e21e | 1719 | XPUSHs(sv); |
a0d0e21e | 1720 | if (type == OP_GLOB) { |
349d4f2f | 1721 | const char *t1; |
a0d0e21e | 1722 | |
3280af22 | 1723 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
6136c704 | 1724 | char * const tmps = SvEND(sv) - 1; |
aa07b2f6 | 1725 | if (*tmps == *SvPVX_const(PL_rs)) { |
c07a80fd | 1726 | *tmps = '\0'; |
b162af07 | 1727 | SvCUR_set(sv, SvCUR(sv) - 1); |
c07a80fd | 1728 | } |
1729 | } | |
349d4f2f NC |
1730 | for (t1 = SvPVX_const(sv); *t1; t1++) |
1731 | if (!isALPHA(*t1) && !isDIGIT(*t1) && | |
1732 | strchr("$&*(){}[]'\";\\|?<>~`", *t1)) | |
a0d0e21e | 1733 | break; |
349d4f2f | 1734 | if (*t1 && PerlLIO_lstat(SvPVX_const(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1735 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1736 | continue; | |
1737 | } | |
2d79bf7f | 1738 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
d4c19fe8 AL |
1739 | if (ckWARN(WARN_UTF8)) { |
1740 | const U8 * const s = (const U8*)SvPVX_const(sv) + offset; | |
1741 | const STRLEN len = SvCUR(sv) - offset; | |
1742 | const U8 *f; | |
1743 | ||
1744 | if (!is_utf8_string_loc(s, len, &f)) | |
1745 | /* Emulate :encoding(utf8) warning in the same case. */ | |
1746 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
1747 | "utf8 \"\\x%02X\" does not map to Unicode", | |
1748 | f < (U8*)SvEND(sv) ? *f : 0); | |
1749 | } | |
a0d0e21e | 1750 | } |
54310121 | 1751 | if (gimme == G_ARRAY) { |
a0d0e21e | 1752 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1da4ca5f | 1753 | SvPV_shrink_to_cur(sv); |
a0d0e21e | 1754 | } |
561b68a9 | 1755 | sv = sv_2mortal(newSV(80)); |
a0d0e21e LW |
1756 | continue; |
1757 | } | |
54310121 | 1758 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e | 1759 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
d5b5861b NC |
1760 | const STRLEN new_len |
1761 | = SvCUR(sv) < 60 ? 80 : SvCUR(sv)+40; /* allow some slop */ | |
1da4ca5f | 1762 | SvPV_renew(sv, new_len); |
a0d0e21e LW |
1763 | } |
1764 | RETURN; | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | PP(pp_enter) | |
1769 | { | |
27da23d5 | 1770 | dVAR; dSP; |
c09156bb | 1771 | register PERL_CONTEXT *cx; |
533c011a | 1772 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e | 1773 | |
54310121 | 1774 | if (gimme == -1) { |
e91684bf VP |
1775 | if (cxstack_ix >= 0) { |
1776 | /* If this flag is set, we're just inside a return, so we should | |
1777 | * store the caller's context */ | |
1778 | gimme = (PL_op->op_flags & OPf_SPECIAL) | |
1779 | ? block_gimme() | |
1780 | : cxstack[cxstack_ix].blk_gimme; | |
1781 | } else | |
54310121 | 1782 | gimme = G_SCALAR; |
1783 | } | |
a0d0e21e | 1784 | |
d343c3ef | 1785 | ENTER_with_name("block"); |
a0d0e21e LW |
1786 | |
1787 | SAVETMPS; | |
924508f0 | 1788 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
1789 | |
1790 | RETURN; | |
1791 | } | |
1792 | ||
1793 | PP(pp_helem) | |
1794 | { | |
97aff369 | 1795 | dVAR; dSP; |
760ac839 | 1796 | HE* he; |
ae77835f | 1797 | SV **svp; |
c445ea15 | 1798 | SV * const keysv = POPs; |
85fbaab2 | 1799 | HV * const hv = MUTABLE_HV(POPs); |
a3b680e6 AL |
1800 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
1801 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
be6c24e0 | 1802 | SV *sv; |
c158a4fd | 1803 | const U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvSHARED_HASH(keysv) : 0; |
92970b93 | 1804 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
d30e492c | 1805 | bool preeminent = TRUE; |
a0d0e21e | 1806 | |
d4c19fe8 | 1807 | if (SvTYPE(hv) != SVt_PVHV) |
a0d0e21e | 1808 | RETPUSHUNDEF; |
d4c19fe8 | 1809 | |
92970b93 | 1810 | if (localizing) { |
d4c19fe8 AL |
1811 | MAGIC *mg; |
1812 | HV *stash; | |
d30e492c VP |
1813 | |
1814 | /* If we can determine whether the element exist, | |
1815 | * Try to preserve the existenceness of a tied hash | |
1816 | * element by using EXISTS and DELETE if possible. | |
1817 | * Fallback to FETCH and STORE otherwise. */ | |
1818 | if (SvCANEXISTDELETE(hv) || mg_find((const SV *)hv, PERL_MAGIC_env)) | |
1819 | preeminent = hv_exists_ent(hv, keysv, 0); | |
d4c19fe8 | 1820 | } |
d30e492c | 1821 | |
d4c19fe8 AL |
1822 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
1823 | svp = he ? &HeVAL(he) : NULL; | |
a0d0e21e | 1824 | if (lval) { |
3280af22 | 1825 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 1826 | SV* lv; |
1827 | SV* key2; | |
2d8e6c8d | 1828 | if (!defer) { |
be2597df | 1829 | DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv)); |
2d8e6c8d | 1830 | } |
68dc0745 | 1831 | lv = sv_newmortal(); |
1832 | sv_upgrade(lv, SVt_PVLV); | |
1833 | LvTYPE(lv) = 'y'; | |
6136c704 | 1834 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, NULL, 0); |
68dc0745 | 1835 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
b37c2d43 | 1836 | LvTARG(lv) = SvREFCNT_inc_simple(hv); |
68dc0745 | 1837 | LvTARGLEN(lv) = 1; |
1838 | PUSHs(lv); | |
1839 | RETURN; | |
1840 | } | |
92970b93 | 1841 | if (localizing) { |
bfcb3514 | 1842 | if (HvNAME_get(hv) && isGV(*svp)) |
159b6efe | 1843 | save_gp(MUTABLE_GV(*svp), !(PL_op->op_flags & OPf_SPECIAL)); |
47cfc530 VP |
1844 | else if (preeminent) |
1845 | save_helem_flags(hv, keysv, svp, | |
1846 | (PL_op->op_flags & OPf_SPECIAL) ? 0 : SAVEf_SETMAGIC); | |
1847 | else | |
1848 | SAVEHDELETE(hv, keysv); | |
5f05dabc | 1849 | } |
533c011a NIS |
1850 | else if (PL_op->op_private & OPpDEREF) |
1851 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 1852 | } |
3280af22 | 1853 | sv = (svp ? *svp : &PL_sv_undef); |
fd69380d DM |
1854 | /* Originally this did a conditional C<sv = sv_mortalcopy(sv)>; this |
1855 | * was to make C<local $tied{foo} = $tied{foo}> possible. | |
1856 | * However, it seems no longer to be needed for that purpose, and | |
1857 | * introduced a new bug: stuff like C<while ($hash{taintedval} =~ /.../g> | |
1858 | * would loop endlessly since the pos magic is getting set on the | |
1859 | * mortal copy and lost. However, the copy has the effect of | |
1860 | * triggering the get magic, and losing it altogether made things like | |
1861 | * c<$tied{foo};> in void context no longer do get magic, which some | |
1862 | * code relied on. Also, delayed triggering of magic on @+ and friends | |
1863 | * meant the original regex may be out of scope by now. So as a | |
1864 | * compromise, do the get magic here. (The MGf_GSKIP flag will stop it | |
1865 | * being called too many times). */ | |
39cf747a | 1866 | if (!lval && SvRMAGICAL(hv) && SvGMAGICAL(sv)) |
fd69380d | 1867 | mg_get(sv); |
be6c24e0 | 1868 | PUSHs(sv); |
a0d0e21e LW |
1869 | RETURN; |
1870 | } | |
1871 | ||
1872 | PP(pp_leave) | |
1873 | { | |
27da23d5 | 1874 | dVAR; dSP; |
c09156bb | 1875 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
1876 | SV **newsp; |
1877 | PMOP *newpm; | |
1878 | I32 gimme; | |
1879 | ||
533c011a | 1880 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1881 | cx = &cxstack[cxstack_ix]; |
3280af22 | 1882 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e LW |
1883 | } |
1884 | ||
1885 | POPBLOCK(cx,newpm); | |
1886 | ||
e91684bf | 1887 | gimme = OP_GIMME(PL_op, (cxstack_ix >= 0) ? gimme : G_SCALAR); |
a0d0e21e | 1888 | |
a1f49e72 | 1889 | TAINT_NOT; |
54310121 | 1890 | if (gimme == G_VOID) |
1891 | SP = newsp; | |
1892 | else if (gimme == G_SCALAR) { | |
a3b680e6 | 1893 | register SV **mark; |
54310121 | 1894 | MARK = newsp + 1; |
09256e2f | 1895 | if (MARK <= SP) { |
54310121 | 1896 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1897 | *MARK = TOPs; | |
1898 | else | |
1899 | *MARK = sv_mortalcopy(TOPs); | |
09256e2f | 1900 | } else { |
54310121 | 1901 | MEXTEND(mark,0); |
3280af22 | 1902 | *MARK = &PL_sv_undef; |
a0d0e21e | 1903 | } |
54310121 | 1904 | SP = MARK; |
a0d0e21e | 1905 | } |
54310121 | 1906 | else if (gimme == G_ARRAY) { |
a1f49e72 | 1907 | /* in case LEAVE wipes old return values */ |
a3b680e6 | 1908 | register SV **mark; |
a1f49e72 CS |
1909 | for (mark = newsp + 1; mark <= SP; mark++) { |
1910 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
a0d0e21e | 1911 | *mark = sv_mortalcopy(*mark); |
a1f49e72 CS |
1912 | TAINT_NOT; /* Each item is independent */ |
1913 | } | |
1914 | } | |
a0d0e21e | 1915 | } |
3280af22 | 1916 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e | 1917 | |
d343c3ef | 1918 | LEAVE_with_name("block"); |
a0d0e21e LW |
1919 | |
1920 | RETURN; | |
1921 | } | |
1922 | ||
1923 | PP(pp_iter) | |
1924 | { | |
97aff369 | 1925 | dVAR; dSP; |
c09156bb | 1926 | register PERL_CONTEXT *cx; |
dc09a129 | 1927 | SV *sv, *oldsv; |
1d7c1841 | 1928 | SV **itersvp; |
d01136d6 BS |
1929 | AV *av = NULL; /* used for LOOP_FOR on arrays and the stack */ |
1930 | bool av_is_stack = FALSE; | |
a0d0e21e | 1931 | |
924508f0 | 1932 | EXTEND(SP, 1); |
a0d0e21e | 1933 | cx = &cxstack[cxstack_ix]; |
3b719c58 | 1934 | if (!CxTYPE_is_LOOP(cx)) |
cea2e8a9 | 1935 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1936 | |
1d7c1841 | 1937 | itersvp = CxITERVAR(cx); |
d01136d6 | 1938 | if (CxTYPE(cx) == CXt_LOOP_LAZYSV) { |
89ea2908 | 1939 | /* string increment */ |
d01136d6 BS |
1940 | SV* cur = cx->blk_loop.state_u.lazysv.cur; |
1941 | SV *end = cx->blk_loop.state_u.lazysv.end; | |
267cc4a8 NC |
1942 | /* If the maximum is !SvOK(), pp_enteriter substitutes PL_sv_no. |
1943 | It has SvPVX of "" and SvCUR of 0, which is what we want. */ | |
4fe3f0fa | 1944 | STRLEN maxlen = 0; |
d01136d6 | 1945 | const char *max = SvPV_const(end, maxlen); |
89ea2908 | 1946 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
1d7c1841 | 1947 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1948 | /* safe to reuse old SV */ |
1d7c1841 | 1949 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1950 | } |
1c846c1f | 1951 | else |
eaa5c2d6 GA |
1952 | { |
1953 | /* we need a fresh SV every time so that loop body sees a | |
1954 | * completely new SV for closures/references to work as | |
1955 | * they used to */ | |
dc09a129 | 1956 | oldsv = *itersvp; |
1d7c1841 | 1957 | *itersvp = newSVsv(cur); |
dc09a129 | 1958 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1959 | } |
aa07b2f6 | 1960 | if (strEQ(SvPVX_const(cur), max)) |
89ea2908 GA |
1961 | sv_setiv(cur, 0); /* terminate next time */ |
1962 | else | |
1963 | sv_inc(cur); | |
1964 | RETPUSHYES; | |
1965 | } | |
1966 | RETPUSHNO; | |
d01136d6 BS |
1967 | } |
1968 | else if (CxTYPE(cx) == CXt_LOOP_LAZYIV) { | |
89ea2908 | 1969 | /* integer increment */ |
d01136d6 | 1970 | if (cx->blk_loop.state_u.lazyiv.cur > cx->blk_loop.state_u.lazyiv.end) |
89ea2908 | 1971 | RETPUSHNO; |
7f61b687 | 1972 | |
3db8f154 | 1973 | /* don't risk potential race */ |
1d7c1841 | 1974 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1975 | /* safe to reuse old SV */ |
d01136d6 | 1976 | sv_setiv(*itersvp, cx->blk_loop.state_u.lazyiv.cur++); |
eaa5c2d6 | 1977 | } |
1c846c1f | 1978 | else |
eaa5c2d6 GA |
1979 | { |
1980 | /* we need a fresh SV every time so that loop body sees a | |
1981 | * completely new SV for closures/references to work as they | |
1982 | * used to */ | |
dc09a129 | 1983 | oldsv = *itersvp; |
d01136d6 | 1984 | *itersvp = newSViv(cx->blk_loop.state_u.lazyiv.cur++); |
dc09a129 | 1985 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1986 | } |
a2309040 JH |
1987 | |
1988 | /* Handle end of range at IV_MAX */ | |
d01136d6 BS |
1989 | if ((cx->blk_loop.state_u.lazyiv.cur == IV_MIN) && |
1990 | (cx->blk_loop.state_u.lazyiv.end == IV_MAX)) | |
a2309040 | 1991 | { |
d01136d6 BS |
1992 | cx->blk_loop.state_u.lazyiv.cur++; |
1993 | cx->blk_loop.state_u.lazyiv.end++; | |
a2309040 JH |
1994 | } |
1995 | ||
89ea2908 GA |
1996 | RETPUSHYES; |
1997 | } | |
1998 | ||
1999 | /* iterate array */ | |
d01136d6 BS |
2000 | assert(CxTYPE(cx) == CXt_LOOP_FOR); |
2001 | av = cx->blk_loop.state_u.ary.ary; | |
2002 | if (!av) { | |
2003 | av_is_stack = TRUE; | |
2004 | av = PL_curstack; | |
2005 | } | |
ef3e5ea9 | 2006 | if (PL_op->op_private & OPpITER_REVERSED) { |
d01136d6 BS |
2007 | if (cx->blk_loop.state_u.ary.ix <= (av_is_stack |
2008 | ? cx->blk_loop.resetsp + 1 : 0)) | |
ef3e5ea9 | 2009 | RETPUSHNO; |
a0d0e21e | 2010 | |
ef3e5ea9 | 2011 | if (SvMAGICAL(av) || AvREIFY(av)) { |
d01136d6 | 2012 | SV * const * const svp = av_fetch(av, --cx->blk_loop.state_u.ary.ix, FALSE); |
a0714e2c | 2013 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
2014 | } |
2015 | else { | |
d01136d6 | 2016 | sv = AvARRAY(av)[--cx->blk_loop.state_u.ary.ix]; |
ef3e5ea9 | 2017 | } |
d42935ef JH |
2018 | } |
2019 | else { | |
d01136d6 | 2020 | if (cx->blk_loop.state_u.ary.ix >= (av_is_stack ? cx->blk_oldsp : |
ef3e5ea9 NC |
2021 | AvFILL(av))) |
2022 | RETPUSHNO; | |
2023 | ||
2024 | if (SvMAGICAL(av) || AvREIFY(av)) { | |
d01136d6 | 2025 | SV * const * const svp = av_fetch(av, ++cx->blk_loop.state_u.ary.ix, FALSE); |
a0714e2c | 2026 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
2027 | } |
2028 | else { | |
d01136d6 | 2029 | sv = AvARRAY(av)[++cx->blk_loop.state_u.ary.ix]; |
ef3e5ea9 | 2030 | } |
d42935ef | 2031 | } |
ef3e5ea9 | 2032 | |
0565a181 | 2033 | if (sv && SvIS_FREED(sv)) { |
a0714e2c | 2034 | *itersvp = NULL; |
b6c83531 | 2035 | Perl_croak(aTHX_ "Use of freed value in iteration"); |
cccede53 DM |
2036 | } |
2037 | ||
d01136d6 | 2038 | if (sv) { |
a0d0e21e | 2039 | SvTEMP_off(sv); |
d01136d6 BS |
2040 | SvREFCNT_inc_simple_void_NN(sv); |
2041 | } | |
a0d0e21e | 2042 | else |
3280af22 | 2043 | sv = &PL_sv_undef; |
d01136d6 BS |
2044 | if (!av_is_stack && sv == &PL_sv_undef) { |
2045 | SV *lv = newSV_type(SVt_PVLV); | |
2046 | LvTYPE(lv) = 'y'; | |
2047 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); | |
b37c2d43 | 2048 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
d01136d6 | 2049 | LvTARGOFF(lv) = cx->blk_loop.state_u.ary.ix; |
42718184 | 2050 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
d01136d6 | 2051 | sv = lv; |
5f05dabc | 2052 | } |
a0d0e21e | 2053 | |
dc09a129 | 2054 | oldsv = *itersvp; |
d01136d6 | 2055 | *itersvp = sv; |
dc09a129 DM |
2056 | SvREFCNT_dec(oldsv); |
2057 | ||
a0d0e21e LW |
2058 | RETPUSHYES; |
2059 | } | |
2060 | ||
2061 | PP(pp_subst) | |
2062 | { | |
97aff369 | 2063 | dVAR; dSP; dTARG; |
a0d0e21e LW |
2064 | register PMOP *pm = cPMOP; |
2065 | PMOP *rpm = pm; | |
a0d0e21e LW |
2066 | register char *s; |
2067 | char *strend; | |
2068 | register char *m; | |
5c144d81 | 2069 | const char *c; |
a0d0e21e LW |
2070 | register char *d; |
2071 | STRLEN clen; | |
2072 | I32 iters = 0; | |
2073 | I32 maxiters; | |
2074 | register I32 i; | |
2075 | bool once; | |
99710fe3 | 2076 | U8 rxtainted; |
a0d0e21e | 2077 | char *orig; |
1ed74d04 | 2078 | U8 r_flags; |
aaa362c4 | 2079 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
2080 | STRLEN len; |
2081 | int force_on_match = 0; | |
0bcc34c2 | 2082 | const I32 oldsave = PL_savestack_ix; |
792b2c16 | 2083 | STRLEN slen; |
f272994b | 2084 | bool doutf8 = FALSE; |
10300be4 | 2085 | I32 matched; |
f8c7b90f | 2086 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2087 | bool is_cow; |
2088 | #endif | |
a0714e2c | 2089 | SV *nsv = NULL; |
b770e143 NC |
2090 | /* known replacement string? */ |
2091 | register SV *dstr = (pm->op_pmflags & PMf_CONST) ? POPs : NULL; | |
a0d0e21e | 2092 | |
f410a211 NC |
2093 | PERL_ASYNC_CHECK(); |
2094 | ||
533c011a | 2095 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 2096 | TARG = POPs; |
59f00321 RGS |
2097 | else if (PL_op->op_private & OPpTARGET_MY) |
2098 | GETTARGET; | |
a0d0e21e | 2099 | else { |
54b9620d | 2100 | TARG = DEFSV; |
a0d0e21e | 2101 | EXTEND(SP,1); |
1c846c1f | 2102 | } |
d9f424b2 | 2103 | |
4f4d7508 DC |
2104 | /* In non-destructive replacement mode, duplicate target scalar so it |
2105 | * remains unchanged. */ | |
2106 | if (rpm->op_pmflags & PMf_NONDESTRUCT) | |
2107 | TARG = newSVsv(TARG); | |
2108 | ||
f8c7b90f | 2109 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2110 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, |
2111 | because they make integers such as 256 "false". */ | |
2112 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
2113 | #else | |
765f542d NC |
2114 | if (SvIsCOW(TARG)) |
2115 | sv_force_normal_flags(TARG,0); | |
ed252734 NC |
2116 | #endif |
2117 | if ( | |
f8c7b90f | 2118 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2119 | !is_cow && |
2120 | #endif | |
2121 | (SvREADONLY(TARG) | |
cecf5685 NC |
2122 | || ( ((SvTYPE(TARG) == SVt_PVGV && isGV_with_GP(TARG)) |
2123 | || SvTYPE(TARG) > SVt_PVLV) | |
4ce457a6 | 2124 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) |
6ad8f254 | 2125 | Perl_croak_no_modify(aTHX); |
8ec5e241 NIS |
2126 | PUTBACK; |
2127 | ||
3e462cdc | 2128 | setup_match: |
d5263905 | 2129 | s = SvPV_mutable(TARG, len); |
68dc0745 | 2130 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 2131 | force_on_match = 1; |
07bc277f | 2132 | rxtainted = ((RX_EXTFLAGS(rx) & RXf_TAINTED) || |
3280af22 NIS |
2133 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
2134 | if (PL_tainted) | |
b3eb6a9b | 2135 | rxtainted |= 2; |
9212bbba | 2136 | TAINT_NOT; |
a12c0f56 | 2137 | |
a30b2f1f | 2138 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 2139 | |
a0d0e21e LW |
2140 | force_it: |
2141 | if (!pm || !s) | |
2269b42e | 2142 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
2143 | |
2144 | strend = s + len; | |
a30b2f1f | 2145 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
2146 | maxiters = 2 * slen + 10; /* We can match twice at each |
2147 | position, once with zero-length, | |
2148 | second time with non-zero. */ | |
a0d0e21e | 2149 | |
220fc49f | 2150 | if (!RX_PRELEN(rx) && PL_curpm) { |
3280af22 | 2151 | pm = PL_curpm; |
aaa362c4 | 2152 | rx = PM_GETRE(pm); |
a0d0e21e | 2153 | } |
07bc277f NC |
2154 | r_flags = (RX_NPARENS(rx) || SvTEMP(TARG) || PL_sawampersand |
2155 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY)) ) | |
ed252734 | 2156 | ? REXEC_COPY_STR : 0; |
f722798b | 2157 | if (SvSCREAM(TARG)) |
22e551b9 | 2158 | r_flags |= REXEC_SCREAM; |
7fba1cd6 | 2159 | |
a0d0e21e | 2160 | orig = m = s; |
07bc277f | 2161 | if (RX_EXTFLAGS(rx) & RXf_USE_INTUIT) { |
ee0b7718 | 2162 | PL_bostr = orig; |
f9f4320a | 2163 | s = CALLREG_INTUIT_START(rx, TARG, s, strend, r_flags, NULL); |
f722798b IZ |
2164 | |
2165 | if (!s) | |
2166 | goto nope; | |
2167 | /* How to do it in subst? */ | |
07bc277f | 2168 | /* if ( (RX_EXTFLAGS(rx) & RXf_CHECK_ALL) |
1c846c1f | 2169 | && !PL_sawampersand |
07bc277f NC |
2170 | && !(RX_EXTFLAGS(rx) & RXf_KEEPCOPY) |
2171 | && ((RX_EXTFLAGS(rx) & RXf_NOSCAN) | |
2172 | || !((RX_EXTFLAGS(rx) & RXf_INTUIT_TAIL) | |
f722798b IZ |
2173 | && (r_flags & REXEC_SCREAM)))) |
2174 | goto yup; | |
2175 | */ | |
a0d0e21e | 2176 | } |
71be2cbc | 2177 | |
2178 | /* only replace once? */ | |
a0d0e21e | 2179 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
10300be4 YO |
2180 | matched = CALLREGEXEC(rx, s, strend, orig, 0, TARG, NULL, |
2181 | r_flags | REXEC_CHECKED); | |
71be2cbc | 2182 | /* known replacement string? */ |
f272994b | 2183 | if (dstr) { |
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 | */ | |
2189 | if (matched && DO_UTF8(dstr) && ! DO_UTF8(TARG)) { | |
2190 | const STRLEN new_len = sv_utf8_upgrade(TARG); | |
2191 | ||
2192 | /* If the lengths are the same, the pattern contains only | |
2193 | * invariants, can keep going; otherwise, various internal markers | |
2194 | * could be off, so redo */ | |
2195 | if (new_len != len) { | |
2196 | goto setup_match; | |
2197 | } | |
2198 | } | |
2199 | ||
8514a05a JH |
2200 | /* replacement needing upgrading? */ |
2201 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 2202 | nsv = sv_newmortal(); |
4a176938 | 2203 | SvSetSV(nsv, dstr); |
8514a05a JH |
2204 | if (PL_encoding) |
2205 | sv_recode_to_utf8(nsv, PL_encoding); | |
2206 | else | |
2207 | sv_utf8_upgrade(nsv); | |
5c144d81 | 2208 | c = SvPV_const(nsv, clen); |
4a176938 JH |
2209 | doutf8 = TRUE; |
2210 | } | |
2211 | else { | |
5c144d81 | 2212 | c = SvPV_const(dstr, clen); |
4a176938 | 2213 | doutf8 = DO_UTF8(dstr); |
8514a05a | 2214 | } |
f272994b A |
2215 | } |
2216 | else { | |
6136c704 | 2217 | c = NULL; |
f272994b A |
2218 | doutf8 = FALSE; |
2219 | } | |
2220 | ||
71be2cbc | 2221 | /* can do inplace substitution? */ |
ed252734 | 2222 | if (c |
f8c7b90f | 2223 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2224 | && !is_cow |
2225 | #endif | |
07bc277f NC |
2226 | && (I32)clen <= RX_MINLENRET(rx) && (once || !(r_flags & REXEC_COPY_STR)) |
2227 | && !(RX_EXTFLAGS(rx) & RXf_LOOKBEHIND_SEEN) | |
db79b45b | 2228 | && (!doutf8 || SvUTF8(TARG))) { |
10300be4 | 2229 | if (!matched) |
f722798b | 2230 | { |
8ec5e241 | 2231 | SPAGAIN; |
4f4d7508 DC |
2232 | if (rpm->op_pmflags & PMf_NONDESTRUCT) |
2233 | PUSHs(TARG); | |
2234 | else | |
2235 | PUSHs(&PL_sv_no); | |
71be2cbc | 2236 | LEAVE_SCOPE(oldsave); |
2237 | RETURN; | |
2238 | } | |
f8c7b90f | 2239 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2240 | if (SvIsCOW(TARG)) { |
2241 | assert (!force_on_match); | |
2242 | goto have_a_cow; | |
2243 | } | |
2244 | #endif | |
71be2cbc | 2245 | if (force_on_match) { |
2246 | force_on_match = 0; | |
2247 | s = SvPV_force(TARG, len); | |
2248 | goto force_it; | |
2249 | } | |
71be2cbc | 2250 | d = s; |
3280af22 | 2251 | PL_curpm = pm; |
71be2cbc | 2252 | SvSCREAM_off(TARG); /* disable possible screamer */ |
2253 | if (once) { | |
48c036b1 | 2254 | rxtainted |= RX_MATCH_TAINTED(rx); |
07bc277f NC |
2255 | m = orig + RX_OFFS(rx)[0].start; |
2256 | d = orig + RX_OFFS(rx)[0].end; | |
71be2cbc | 2257 | s = orig; |
2258 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2259 | if (clen) { | |
2260 | Copy(c, m, clen, char); | |
2261 | m += clen; | |
a0d0e21e | 2262 | } |
71be2cbc | 2263 | i = strend - d; |
2264 | if (i > 0) { | |
2265 | Move(d, m, i, char); | |
2266 | m += i; | |
a0d0e21e | 2267 | } |
71be2cbc | 2268 | *m = '\0'; |
2269 | SvCUR_set(TARG, m - s); | |
2270 | } | |
155aba94 | 2271 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc | 2272 | d -= clen; |
2273 | m = d; | |
0d3c21b0 | 2274 | Move(s, d - i, i, char); |
71be2cbc | 2275 | sv_chop(TARG, d-i); |
71be2cbc | 2276 | if (clen) |
2277 | Copy(c, m, clen, char); | |
2278 | } | |
2279 | else if (clen) { | |
2280 | d -= clen; | |
2281 | sv_chop(TARG, d); | |
2282 | Copy(c, d, clen, char); | |
2283 | } | |
2284 | else { | |
2285 | sv_chop(TARG, d); | |
2286 | } | |
48c036b1 | 2287 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2288 | SPAGAIN; |
4f4d7508 DC |
2289 | if (rpm->op_pmflags & PMf_NONDESTRUCT) |
2290 | PUSHs(TARG); | |
2291 | else | |
2292 | PUSHs(&PL_sv_yes); | |
71be2cbc | 2293 | } |
2294 | else { | |
71be2cbc | 2295 | do { |
2296 | if (iters++ > maxiters) | |
cea2e8a9 | 2297 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2298 | rxtainted |= RX_MATCH_TAINTED(rx); |
07bc277f | 2299 | m = RX_OFFS(rx)[0].start + orig; |
155aba94 | 2300 | if ((i = m - s)) { |
71be2cbc | 2301 | if (s != d) |
2302 | Move(s, d, i, char); | |
2303 | d += i; | |
a0d0e21e | 2304 | } |
71be2cbc | 2305 | if (clen) { |
2306 | Copy(c, d, clen, char); | |
2307 | d += clen; | |
2308 | } | |
07bc277f | 2309 | s = RX_OFFS(rx)[0].end + orig; |
f9f4320a | 2310 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
f722798b IZ |
2311 | TARG, NULL, |
2312 | /* don't match same null twice */ | |
2313 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 2314 | if (s != d) { |
2315 | i = strend - s; | |
aa07b2f6 | 2316 | SvCUR_set(TARG, d - SvPVX_const(TARG) + i); |
71be2cbc | 2317 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e | 2318 | } |
48c036b1 | 2319 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2320 | SPAGAIN; |
4f4d7508 DC |
2321 | if (rpm->op_pmflags & PMf_NONDESTRUCT) |
2322 | PUSHs(TARG); | |
2323 | else | |
2324 | mPUSHi((I32)iters); | |
a0d0e21e | 2325 | } |
80b498e0 | 2326 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 | 2327 | TAINT_IF(rxtainted); |
8ec5e241 NIS |
2328 | if (SvSMAGICAL(TARG)) { |
2329 | PUTBACK; | |
2330 | mg_set(TARG); | |
2331 | SPAGAIN; | |
2332 | } | |
9212bbba | 2333 | SvTAINT(TARG); |
aefe6dfc JH |
2334 | if (doutf8) |
2335 | SvUTF8_on(TARG); | |
71be2cbc | 2336 | LEAVE_SCOPE(oldsave); |
2337 | RETURN; | |
a0d0e21e | 2338 | } |
71be2cbc | 2339 | |
10300be4 | 2340 | if (matched) |
f722798b | 2341 | { |
a0d0e21e LW |
2342 | if (force_on_match) { |
2343 | force_on_match = 0; | |
2344 | s = SvPV_force(TARG, len); | |
2345 | goto force_it; | |
2346 | } | |
f8c7b90f | 2347 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2348 | have_a_cow: |
2349 | #endif | |
48c036b1 | 2350 | rxtainted |= RX_MATCH_TAINTED(rx); |
740cce10 | 2351 | dstr = newSVpvn_utf8(m, s-m, DO_UTF8(TARG)); |
cff085c1 | 2352 | SAVEFREESV(dstr); |
3280af22 | 2353 | PL_curpm = pm; |
a0d0e21e | 2354 | if (!c) { |
c09156bb | 2355 | register PERL_CONTEXT *cx; |
8ec5e241 | 2356 | SPAGAIN; |
a0d0e21e | 2357 | PUSHSUBST(cx); |
20e98b0f | 2358 | RETURNOP(cPMOP->op_pmreplrootu.op_pmreplroot); |
a0d0e21e | 2359 | } |
cf93c79d | 2360 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2361 | do { |
2362 | if (iters++ > maxiters) | |
cea2e8a9 | 2363 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2364 | rxtainted |= RX_MATCH_TAINTED(rx); |
07bc277f | 2365 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
a0d0e21e LW |
2366 | m = s; |
2367 | s = orig; | |
07bc277f | 2368 | orig = RX_SUBBEG(rx); |
a0d0e21e LW |
2369 | s = orig + (m - s); |
2370 | strend = s + (strend - m); | |
2371 | } | |
07bc277f | 2372 | m = RX_OFFS(rx)[0].start + orig; |
db79b45b JH |
2373 | if (doutf8 && !SvUTF8(dstr)) |
2374 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); | |
2375 | else | |
2376 | sv_catpvn(dstr, s, m-s); | |
07bc277f | 2377 | s = RX_OFFS(rx)[0].end + orig; |
a0d0e21e LW |
2378 | if (clen) |
2379 | sv_catpvn(dstr, c, clen); | |
2380 | if (once) | |
2381 | break; | |
f9f4320a | 2382 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
ffc61ed2 | 2383 | TARG, NULL, r_flags)); |
db79b45b JH |
2384 | if (doutf8 && !DO_UTF8(TARG)) |
2385 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); | |
89afcb60 A |
2386 | else |
2387 | sv_catpvn(dstr, s, strend - s); | |
748a9306 | 2388 | |
f8c7b90f | 2389 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2390 | /* The match may make the string COW. If so, brilliant, because that's |
2391 | just saved us one malloc, copy and free - the regexp has donated | |
2392 | the old buffer, and we malloc an entirely new one, rather than the | |
2393 | regexp malloc()ing a buffer and copying our original, only for | |
2394 | us to throw it away here during the substitution. */ | |
2395 | if (SvIsCOW(TARG)) { | |
2396 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
2397 | } else | |
2398 | #endif | |
2399 | { | |
8bd4d4c5 | 2400 | SvPV_free(TARG); |
ed252734 | 2401 | } |
f880fe2f | 2402 | SvPV_set(TARG, SvPVX(dstr)); |
748a9306 LW |
2403 | SvCUR_set(TARG, SvCUR(dstr)); |
2404 | SvLEN_set(TARG, SvLEN(dstr)); | |
f272994b | 2405 | doutf8 |= DO_UTF8(dstr); |
6136c704 | 2406 | SvPV_set(dstr, NULL); |
748a9306 | 2407 | |
48c036b1 | 2408 | TAINT_IF(rxtainted & 1); |
f878fbec | 2409 | SPAGAIN; |
4f4d7508 DC |
2410 | if (rpm->op_pmflags & PMf_NONDESTRUCT) |
2411 | PUSHs(TARG); | |
2412 | else | |
2413 | mPUSHi((I32)iters); | |
48c036b1 | 2414 | |
a0d0e21e | 2415 | (void)SvPOK_only(TARG); |
f272994b | 2416 | if (doutf8) |
60aeb6fd | 2417 | SvUTF8_on(TARG); |
48c036b1 | 2418 | TAINT_IF(rxtainted); |
a0d0e21e | 2419 | SvSETMAGIC(TARG); |
9212bbba | 2420 | SvTAINT(TARG); |
4633a7c4 | 2421 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2422 | RETURN; |
2423 | } | |
5cd24f17 | 2424 | goto ret_no; |
a0d0e21e LW |
2425 | |
2426 | nope: | |
1c846c1f | 2427 | ret_no: |
8ec5e241 | 2428 | SPAGAIN; |
4f4d7508 DC |
2429 | if (rpm->op_pmflags & PMf_NONDESTRUCT) |
2430 | PUSHs(TARG); | |
2431 | else | |
2432 | PUSHs(&PL_sv_no); | |
4633a7c4 | 2433 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2434 | RETURN; |
2435 | } | |
2436 | ||
2437 | PP(pp_grepwhile) | |
2438 | { | |
27da23d5 | 2439 | dVAR; dSP; |
a0d0e21e LW |
2440 | |
2441 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2442 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2443 | ++*PL_markstack_ptr; | |
d343c3ef | 2444 | LEAVE_with_name("grep_item"); /* exit inner scope */ |
a0d0e21e LW |
2445 | |
2446 | /* All done yet? */ | |
3280af22 | 2447 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2448 | I32 items; |
c4420975 | 2449 | const I32 gimme = GIMME_V; |
a0d0e21e | 2450 | |
d343c3ef | 2451 | LEAVE_with_name("grep"); /* exit outer scope */ |
a0d0e21e | 2452 | (void)POPMARK; /* pop src */ |
3280af22 | 2453 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2454 | (void)POPMARK; /* pop dst */ |
3280af22 | 2455 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2456 | if (gimme == G_SCALAR) { |
7cc47870 | 2457 | if (PL_op->op_private & OPpGREP_LEX) { |
c4420975 | 2458 | SV* const sv = sv_newmortal(); |
7cc47870 RGS |
2459 | sv_setiv(sv, items); |
2460 | PUSHs(sv); | |
2461 | } | |
2462 | else { | |
2463 | dTARGET; | |
2464 | XPUSHi(items); | |
2465 | } | |
a0d0e21e | 2466 | } |
54310121 | 2467 | else if (gimme == G_ARRAY) |
2468 | SP += items; | |
a0d0e21e LW |
2469 | RETURN; |
2470 | } | |
2471 | else { | |
2472 | SV *src; | |
2473 | ||
d343c3ef | 2474 | ENTER_with_name("grep_item"); /* enter inner scope */ |
1d7c1841 | 2475 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2476 | |
3280af22 | 2477 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2478 | SvTEMP_off(src); |
59f00321 RGS |
2479 | if (PL_op->op_private & OPpGREP_LEX) |
2480 | PAD_SVl(PL_op->op_targ) = src; | |
2481 | else | |
414bf5ae | 2482 | DEFSV_set(src); |
a0d0e21e LW |
2483 | |
2484 | RETURNOP(cLOGOP->op_other); | |
2485 | } | |
2486 | } | |
2487 | ||
2488 | PP(pp_leavesub) | |
2489 | { | |
27da23d5 | 2490 | dVAR; dSP; |
a0d0e21e LW |
2491 | SV **mark; |
2492 | SV **newsp; | |
2493 | PMOP *newpm; | |
2494 | I32 gimme; | |
c09156bb | 2495 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2496 | SV *sv; |
a0d0e21e | 2497 | |
9850bf21 RH |
2498 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2499 | return 0; | |
2500 | ||
a0d0e21e | 2501 | POPBLOCK(cx,newpm); |
5dd42e15 | 2502 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2503 | |
a1f49e72 | 2504 | TAINT_NOT; |
a0d0e21e LW |
2505 | if (gimme == G_SCALAR) { |
2506 | MARK = newsp + 1; | |
a29cdaf0 | 2507 | if (MARK <= SP) { |
a8bba7fa | 2508 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 IZ |
2509 | if (SvTEMP(TOPs)) { |
2510 | *MARK = SvREFCNT_inc(TOPs); | |
2511 | FREETMPS; | |
2512 | sv_2mortal(*MARK); | |
cd06dffe GS |
2513 | } |
2514 | else { | |
959e3673 | 2515 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2516 | FREETMPS; |
959e3673 GS |
2517 | *MARK = sv_mortalcopy(sv); |
2518 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2519 | } |
cd06dffe GS |
2520 | } |
2521 | else | |
a29cdaf0 | 2522 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe GS |
2523 | } |
2524 | else { | |
f86702cc | 2525 | MEXTEND(MARK, 0); |
3280af22 | 2526 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2527 | } |
2528 | SP = MARK; | |
2529 | } | |
54310121 | 2530 | else if (gimme == G_ARRAY) { |
f86702cc | 2531 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 | 2532 | if (!SvTEMP(*MARK)) { |
f86702cc | 2533 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2534 | TAINT_NOT; /* Each item is independent */ |
2535 | } | |
f86702cc | 2536 | } |
a0d0e21e | 2537 | } |
f86702cc | 2538 | PUTBACK; |
1c846c1f | 2539 | |
a57c6685 | 2540 | LEAVE; |
5dd42e15 | 2541 | cxstack_ix--; |
b0d9ce38 | 2542 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2543 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2544 | |
b0d9ce38 | 2545 | LEAVESUB(sv); |
f39bc417 | 2546 | return cx->blk_sub.retop; |
a0d0e21e LW |
2547 | } |
2548 | ||
cd06dffe GS |
2549 | /* This duplicates the above code because the above code must not |
2550 | * get any slower by more conditions */ | |
2551 | PP(pp_leavesublv) | |
2552 | { | |
27da23d5 | 2553 | dVAR; dSP; |
cd06dffe GS |
2554 | SV **mark; |
2555 | SV **newsp; | |
2556 | PMOP *newpm; | |
2557 | I32 gimme; | |
2558 | register PERL_CONTEXT *cx; | |
b0d9ce38 | 2559 | SV *sv; |
cd06dffe | 2560 | |
9850bf21 RH |
2561 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2562 | return 0; | |
2563 | ||
cd06dffe | 2564 | POPBLOCK(cx,newpm); |
5dd42e15 | 2565 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2566 | |
cd06dffe GS |
2567 | TAINT_NOT; |
2568 | ||
bafb2adc | 2569 | if (CxLVAL(cx) & OPpENTERSUB_INARGS) { |
cd06dffe GS |
2570 | /* We are an argument to a function or grep(). |
2571 | * This kind of lvalueness was legal before lvalue | |
2572 | * subroutines too, so be backward compatible: | |
2573 | * cannot report errors. */ | |
2574 | ||
2575 | /* Scalar context *is* possible, on the LHS of -> only, | |
2576 | * as in f()->meth(). But this is not an lvalue. */ | |
2577 | if (gimme == G_SCALAR) | |
2578 | goto temporise; | |
2579 | if (gimme == G_ARRAY) { | |
a8bba7fa | 2580 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe GS |
2581 | goto temporise_array; |
2582 | EXTEND_MORTAL(SP - newsp); | |
2583 | for (mark = newsp + 1; mark <= SP; mark++) { | |
2584 | if (SvTEMP(*mark)) | |
6f207bd3 | 2585 | NOOP; |
cd06dffe GS |
2586 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) |
2587 | *mark = sv_mortalcopy(*mark); | |
2588 | else { | |
2589 | /* Can be a localized value subject to deletion. */ | |
2590 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2591 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2592 | } |
2593 | } | |
2594 | } | |
2595 | } | |
bafb2adc | 2596 | else if (CxLVAL(cx)) { /* Leave it as it is if we can. */ |
cd06dffe GS |
2597 | /* Here we go for robustness, not for speed, so we change all |
2598 | * the refcounts so the caller gets a live guy. Cannot set | |
2599 | * TEMP, so sv_2mortal is out of question. */ | |
a8bba7fa | 2600 | if (!CvLVALUE(cx->blk_sub.cv)) { |
a57c6685 | 2601 | LEAVE; |
5dd42e15 | 2602 | cxstack_ix--; |
b0d9ce38 | 2603 | POPSUB(cx,sv); |
d470f89e | 2604 | PL_curpm = newpm; |
b0d9ce38 | 2605 | LEAVESUB(sv); |
d470f89e GS |
2606 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2607 | } | |
cd06dffe GS |
2608 | if (gimme == G_SCALAR) { |
2609 | MARK = newsp + 1; | |
2610 | EXTEND_MORTAL(1); | |
2611 | if (MARK == SP) { | |
f9bc45ef TP |
2612 | /* Temporaries are bad unless they happen to be elements |
2613 | * of a tied hash or array */ | |
f71f472f FC |
2614 | if ((SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP) || |
2615 | (SvFLAGS(TOPs) & (SVf_READONLY | SVf_FAKE)) | |
2616 | == SVf_READONLY | |
2617 | ) && | |
f9bc45ef | 2618 | !(SvRMAGICAL(TOPs) && mg_find(TOPs, PERL_MAGIC_tiedelem))) { |
a57c6685 | 2619 | LEAVE; |
5dd42e15 | 2620 | cxstack_ix--; |
b0d9ce38 | 2621 | POPSUB(cx,sv); |
d470f89e | 2622 | PL_curpm = newpm; |
b0d9ce38 | 2623 | LEAVESUB(sv); |
e9f19e3c HS |
2624 | DIE(aTHX_ "Can't return %s from lvalue subroutine", |
2625 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" | |
2626 | : "a readonly value" : "a temporary"); | |
d470f89e | 2627 | } |
cd06dffe GS |
2628 | else { /* Can be a localized value |
2629 | * subject to deletion. */ | |
2630 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2631 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2632 | } |
2633 | } | |
d470f89e | 2634 | else { /* Should not happen? */ |
a57c6685 | 2635 | LEAVE; |
5dd42e15 | 2636 | cxstack_ix--; |
b0d9ce38 | 2637 | POPSUB(cx,sv); |
d470f89e | 2638 | PL_curpm = newpm; |
b0d9ce38 | 2639 | LEAVESUB(sv); |
d470f89e | 2640 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe | 2641 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e | 2642 | } |
cd06dffe GS |
2643 | SP = MARK; |
2644 | } | |
2645 | else if (gimme == G_ARRAY) { | |
2646 | EXTEND_MORTAL(SP - newsp); | |
2647 | for (mark = newsp + 1; mark <= SP; mark++) { | |
f206cdda AMS |
2648 | if (*mark != &PL_sv_undef |
2649 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { | |
d470f89e GS |
2650 | /* Might be flattened array after $#array = */ |
2651 | PUTBACK; | |
a57c6685 | 2652 | LEAVE; |
5dd42e15 | 2653 | cxstack_ix--; |
b0d9ce38 | 2654 | POPSUB(cx,sv); |
d470f89e | 2655 | PL_curpm = newpm; |
b0d9ce38 | 2656 | LEAVESUB(sv); |
f206cdda AMS |
2657 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2658 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
d470f89e | 2659 | } |
cd06dffe | 2660 | else { |
cd06dffe GS |
2661 | /* Can be a localized value subject to deletion. */ |
2662 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2663 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2664 | } |
2665 | } | |
2666 | } | |
2667 | } | |
2668 | else { | |
2669 | if (gimme == G_SCALAR) { | |
2670 | temporise: | |
2671 | MARK = newsp + 1; | |
2672 | if (MARK <= SP) { | |
a8bba7fa | 2673 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe GS |
2674 | if (SvTEMP(TOPs)) { |
2675 | *MARK = SvREFCNT_inc(TOPs); | |
2676 | FREETMPS; | |
2677 | sv_2mortal(*MARK); | |
2678 | } | |
2679 | else { | |
959e3673 | 2680 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe | 2681 | FREETMPS; |
959e3673 GS |
2682 | *MARK = sv_mortalcopy(sv); |
2683 | SvREFCNT_dec(sv); | |
cd06dffe GS |
2684 | } |
2685 | } | |
2686 | else | |
2687 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
2688 | } | |
2689 | else { | |
2690 | MEXTEND(MARK, 0); | |
2691 | *MARK = &PL_sv_undef; | |
2692 | } | |
2693 | SP = MARK; | |
2694 | } | |
2695 | else if (gimme == G_ARRAY) { | |
2696 | temporise_array: | |
2697 | for (MARK = newsp + 1; MARK <= SP; MARK++) { | |
2698 | if (!SvTEMP(*MARK)) { | |
2699 | *MARK = sv_mortalcopy(*MARK); | |
2700 | TAINT_NOT; /* Each item is independent */ | |
2701 | } | |
2702 | } | |
2703 | } | |
2704 | } | |
2705 | PUTBACK; | |
1c846c1f | 2706 | |
a57c6685 | 2707 | LEAVE; |
5dd42e15 | 2708 | cxstack_ix--; |
b0d9ce38 | 2709 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe GS |
2710 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2711 | ||
b0d9ce38 | 2712 | LEAVESUB(sv); |
f39bc417 | 2713 | return cx->blk_sub.retop; |
cd06dffe GS |
2714 | } |
2715 | ||
a0d0e21e LW |
2716 | PP(pp_entersub) |
2717 | { | |
27da23d5 | 2718 | dVAR; dSP; dPOPss; |
a0d0e21e | 2719 | GV *gv; |
a0d0e21e | 2720 | register CV *cv; |
c09156bb | 2721 | register PERL_CONTEXT *cx; |
5d94fbed | 2722 | I32 gimme; |
a9c4fd4e | 2723 | const bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2724 | |
2725 | if (!sv) | |
cea2e8a9 | 2726 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e | 2727 | switch (SvTYPE(sv)) { |
f1025168 NC |
2728 | /* This is overwhelming the most common case: */ |
2729 | case SVt_PVGV: | |
6e592b3a BM |
2730 | if (!isGV_with_GP(sv)) |
2731 | DIE(aTHX_ "Not a CODE reference"); | |
159b6efe | 2732 | if (!(cv = GvCVu((const GV *)sv))) { |
f730a42d | 2733 | HV *stash; |
f2c0649b | 2734 | cv = sv_2cv(sv, &stash, &gv, 0); |
f730a42d | 2735 | } |
f1025168 | 2736 | if (!cv) { |
a57c6685 | 2737 | ENTER; |
f1025168 NC |
2738 | SAVETMPS; |
2739 | goto try_autoload; | |
2740 | } | |
2741 | break; | |
a0d0e21e | 2742 | default: |
7c75014e DM |
2743 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
2744 | if (hasargs) | |
2745 | SP = PL_stack_base + POPMARK; | |
2746 | RETURN; | |
2747 | } | |
2748 | SvGETMAGIC(sv); | |
2749 | if (SvROK(sv)) { | |
2750 | SV * const * sp = &sv; /* Used in tryAMAGICunDEREF macro. */ | |
2751 | tryAMAGICunDEREF(to_cv); | |
2752 | } | |
2753 | else { | |
a9c4fd4e | 2754 | const char *sym; |
780a5241 | 2755 | STRLEN len; |
7c75014e | 2756 | sym = SvPV_nomg_const(sv, len); |
15ff848f | 2757 | if (!sym) |
cea2e8a9 | 2758 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2759 | if (PL_op->op_private & HINT_STRICT_REFS) |
973a7615 | 2760 | DIE(aTHX_ "Can't use string (\"%.32s\"%s) as a subroutine ref while \"strict refs\" in use", sym, len>32 ? "..." : ""); |
780a5241 | 2761 | cv = get_cvn_flags(sym, len, GV_ADD|SvUTF8(sv)); |
a0d0e21e LW |
2762 | break; |
2763 | } | |
ea726b52 | 2764 | cv = MUTABLE_CV(SvRV(sv)); |
a0d0e21e LW |
2765 | if (SvTYPE(cv) == SVt_PVCV) |
2766 | break; | |
2767 | /* FALL THROUGH */ | |
2768 | case SVt_PVHV: | |
2769 | case SVt_PVAV: | |
cea2e8a9 | 2770 | DIE(aTHX_ "Not a CODE reference"); |
f1025168 | 2771 | /* This is the second most common case: */ |
a0d0e21e | 2772 | case SVt_PVCV: |
ea726b52 | 2773 | cv = MUTABLE_CV(sv); |
a0d0e21e | 2774 | break; |
a0d0e21e LW |
2775 | } |
2776 | ||
a57c6685 | 2777 | ENTER; |
a0d0e21e LW |
2778 | SAVETMPS; |
2779 | ||
2780 | retry: | |
a0d0e21e | 2781 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
2f349aa0 NC |
2782 | GV* autogv; |
2783 | SV* sub_name; | |
2784 | ||
2785 | /* anonymous or undef'd function leaves us no recourse */ | |
2786 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
2787 | DIE(aTHX_ "Undefined subroutine called"); | |
2788 | ||
2789 | /* autoloaded stub? */ | |
2790 | if (cv != GvCV(gv)) { | |
2791 | cv = GvCV(gv); | |
2792 | } | |
2793 | /* should call AUTOLOAD now? */ | |
2794 | else { | |
7e623da3 | 2795 | try_autoload: |
2f349aa0 | 2796 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
7e623da3 | 2797 | FALSE))) |
2f349aa0 NC |
2798 | { |
2799 | cv = GvCV(autogv); | |
2800 | } | |
2801 | /* sorry */ | |
2802 | else { | |
2803 | sub_name = sv_newmortal(); | |
6136c704 | 2804 | gv_efullname3(sub_name, gv, NULL); |
be2597df | 2805 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", SVfARG(sub_name)); |
2f349aa0 NC |
2806 | } |
2807 | } | |
2808 | if (!cv) | |
2809 | DIE(aTHX_ "Not a CODE reference"); | |
2810 | goto retry; | |
a0d0e21e LW |
2811 | } |
2812 | ||
54310121 | 2813 | gimme = GIMME_V; |
67caa1fe | 2814 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
005a8a35 | 2815 | Perl_get_db_sub(aTHX_ &sv, cv); |
a9ef256d NC |
2816 | if (CvISXSUB(cv)) |
2817 | PL_curcopdb = PL_curcop; | |
1ad62f64 BR |
2818 | if (CvLVALUE(cv)) { |
2819 | /* check for lsub that handles lvalue subroutines */ | |
ae5c1e95 | 2820 | cv = GvCV(gv_HVadd(gv_fetchpvs("DB::lsub", GV_ADDMULTI, SVt_PVHV))); |
1ad62f64 BR |
2821 | /* if lsub not found then fall back to DB::sub */ |
2822 | if (!cv) cv = GvCV(PL_DBsub); | |
2823 | } else { | |
2824 | cv = GvCV(PL_DBsub); | |
2825 | } | |
a9ef256d | 2826 | |
ccafdc96 RGS |
2827 | if (!cv || (!CvXSUB(cv) && !CvSTART(cv))) |
2828 | DIE(aTHX_ "No DB::sub routine defined"); | |
67caa1fe | 2829 | } |
a0d0e21e | 2830 | |
aed2304a | 2831 | if (!(CvISXSUB(cv))) { |
f1025168 | 2832 | /* This path taken at least 75% of the time */ |
a0d0e21e LW |
2833 | dMARK; |
2834 | register I32 items = SP - MARK; | |
0bcc34c2 | 2835 | AV* const padlist = CvPADLIST(cv); |
a0d0e21e LW |
2836 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2837 | PUSHSUB(cx); | |
f39bc417 | 2838 | cx->blk_sub.retop = PL_op->op_next; |
a0d0e21e | 2839 | CvDEPTH(cv)++; |
6b35e009 GS |
2840 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2841 | * that eval'' ops within this sub know the correct lexical space. | |
a3985cdc DM |
2842 | * Owing the speed considerations, we choose instead to search for |
2843 | * the cv using find_runcv() when calling doeval(). | |
6b35e009 | 2844 | */ |
3a76ca88 RGS |
2845 | if (CvDEPTH(cv) >= 2) { |
2846 | PERL_STACK_OVERFLOW_CHECK(); | |
2847 | pad_push(padlist, CvDEPTH(cv)); | |
a0d0e21e | 2848 | } |
3a76ca88 RGS |
2849 | SAVECOMPPAD(); |
2850 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); | |
2851 | if (hasargs) { | |
502c6561 | 2852 | AV *const av = MUTABLE_AV(PAD_SVl(0)); |
221373f0 GS |
2853 | if (AvREAL(av)) { |
2854 | /* @_ is normally not REAL--this should only ever | |
2855 | * happen when DB::sub() calls things that modify @_ */ | |
2856 | av_clear(av); | |
2857 | AvREAL_off(av); | |
2858 | AvREIFY_on(av); | |
2859 | } | |
3280af22 | 2860 | cx->blk_sub.savearray = GvAV(PL_defgv); |
502c6561 | 2861 | GvAV(PL_defgv) = MUTABLE_AV(SvREFCNT_inc_simple(av)); |
dd2155a4 | 2862 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2863 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2864 | ++MARK; |
2865 | ||
2866 | if (items > AvMAX(av) + 1) { | |
504618e9 | 2867 | SV **ary = AvALLOC(av); |
a0d0e21e LW |
2868 | if (AvARRAY(av) != ary) { |
2869 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
9c6bc640 | 2870 | AvARRAY(av) = ary; |
a0d0e21e LW |
2871 | } |
2872 | if (items > AvMAX(av) + 1) { | |
2873 | AvMAX(av) = items - 1; | |
2874 | Renew(ary,items,SV*); | |
2875 | AvALLOC(av) = ary; | |
9c6bc640 | 2876 | AvARRAY(av) = ary; |
a0d0e21e LW |
2877 | } |
2878 | } | |
2879 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2880 | AvFILLp(av) = items - 1; |
1c846c1f | 2881 | |
a0d0e21e LW |
2882 | while (items--) { |
2883 | if (*MARK) | |
2884 | SvTEMP_off(*MARK); | |
2885 | MARK++; | |
2886 | } | |
2887 | } | |
4a925ff6 GS |
2888 | /* warning must come *after* we fully set up the context |
2889 | * stuff so that __WARN__ handlers can safely dounwind() | |
2890 | * if they want to | |
2891 | */ | |
2b9dff67 | 2892 | if (CvDEPTH(cv) == PERL_SUB_DEPTH_WARN && ckWARN(WARN_RECURSION) |
4a925ff6 GS |
2893 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) |
2894 | sub_crush_depth(cv); | |
a0d0e21e LW |
2895 | RETURNOP(CvSTART(cv)); |
2896 | } | |
f1025168 | 2897 | else { |
3a76ca88 | 2898 | I32 markix = TOPMARK; |
f1025168 | 2899 | |
3a76ca88 | 2900 | PUTBACK; |
f1025168 | 2901 | |
3a76ca88 RGS |
2902 | if (!hasargs) { |
2903 | /* Need to copy @_ to stack. Alternative may be to | |
2904 | * switch stack to @_, and copy return values | |
2905 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
2906 | AV * const av = GvAV(PL_defgv); | |
2907 | const I32 items = AvFILLp(av) + 1; /* @_ is not tieable */ | |
2908 | ||
2909 | if (items) { | |
2910 | /* Mark is at the end of the stack. */ | |
2911 | EXTEND(SP, items); | |
2912 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2913 | SP += items; | |
2914 | PUTBACK ; | |
2915 | } | |
2916 | } | |
2917 | /* We assume first XSUB in &DB::sub is the called one. */ | |
2918 | if (PL_curcopdb) { | |
2919 | SAVEVPTR(PL_curcop); | |
2920 | PL_curcop = PL_curcopdb; | |
2921 | PL_curcopdb = NULL; | |
2922 | } | |
2923 | /* Do we need to open block here? XXXX */ | |
72df79cf GF |
2924 | |
2925 | /* CvXSUB(cv) must not be NULL because newXS() refuses NULL xsub address */ | |
2926 | assert(CvXSUB(cv)); | |
2927 | CALL_FPTR(CvXSUB(cv))(aTHX_ cv); | |
3a76ca88 RGS |
2928 | |
2929 | /* Enforce some sanity in scalar context. */ | |
2930 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { | |
2931 | if (markix > PL_stack_sp - PL_stack_base) | |
2932 | *(PL_stack_base + markix) = &PL_sv_undef; | |
2933 | else | |
2934 | *(PL_stack_base + markix) = *PL_stack_sp; | |
2935 | PL_stack_sp = PL_stack_base + markix; | |
2936 | } | |
a57c6685 | 2937 | LEAVE; |
f1025168 NC |
2938 | return NORMAL; |
2939 | } | |
a0d0e21e LW |
2940 | } |
2941 | ||
44a8e56a | 2942 | void |
864dbfa3 | 2943 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2944 | { |
7918f24d NC |
2945 | PERL_ARGS_ASSERT_SUB_CRUSH_DEPTH; |
2946 | ||
44a8e56a | 2947 | if (CvANON(cv)) |
9014280d | 2948 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 2949 | else { |
aec46f14 | 2950 | SV* const tmpstr = sv_newmortal(); |
6136c704 | 2951 | gv_efullname3(tmpstr, CvGV(cv), NULL); |
35c1215d | 2952 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
be2597df | 2953 | SVfARG(tmpstr)); |
44a8e56a | 2954 | } |
2955 | } | |
2956 | ||
a0d0e21e LW |
2957 | PP(pp_aelem) |
2958 | { | |
97aff369 | 2959 | dVAR; dSP; |
a0d0e21e | 2960 | SV** svp; |
a3b680e6 | 2961 | SV* const elemsv = POPs; |
d804643f | 2962 | IV elem = SvIV(elemsv); |
502c6561 | 2963 | AV *const av = MUTABLE_AV(POPs); |
e1ec3a88 AL |
2964 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
2965 | const U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > av_len(av)); | |
4ad10a0b VP |
2966 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
2967 | bool preeminent = TRUE; | |
be6c24e0 | 2968 | SV *sv; |
a0d0e21e | 2969 | |
e35c1634 | 2970 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
95b63a38 JH |
2971 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
2972 | "Use of reference \"%"SVf"\" as array index", | |
be2597df | 2973 | SVfARG(elemsv)); |
748a9306 | 2974 | if (elem > 0) |
fc15ae8f | 2975 | elem -= CopARYBASE_get(PL_curcop); |
a0d0e21e LW |
2976 | if (SvTYPE(av) != SVt_PVAV) |
2977 | RETPUSHUNDEF; | |
4ad10a0b VP |
2978 | |
2979 | if (localizing) { | |
2980 | MAGIC *mg; | |
2981 | HV *stash; | |
2982 | ||
2983 | /* If we can determine whether the element exist, | |
2984 | * Try to preserve the existenceness of a tied array | |
2985 | * element by using EXISTS and DELETE if possible. | |
2986 | * Fallback to FETCH and STORE otherwise. */ | |
2987 | if (SvCANEXISTDELETE(av)) | |
2988 | preeminent = av_exists(av, elem); | |
2989 | } | |
2990 | ||
68dc0745 | 2991 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2992 | if (lval) { |
2b573ace | 2993 | #ifdef PERL_MALLOC_WRAP |
2b573ace | 2994 | if (SvUOK(elemsv)) { |
a9c4fd4e | 2995 | const UV uv = SvUV(elemsv); |
2b573ace JH |
2996 | elem = uv > IV_MAX ? IV_MAX : uv; |
2997 | } | |
2998 | else if (SvNOK(elemsv)) | |
2999 | elem = (IV)SvNV(elemsv); | |
a3b680e6 AL |
3000 | if (elem > 0) { |
3001 | static const char oom_array_extend[] = | |
3002 | "Out of memory during array extend"; /* Duplicated in av.c */ | |
2b573ace | 3003 | MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend); |
a3b680e6 | 3004 | } |
2b573ace | 3005 | #endif |
3280af22 | 3006 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 3007 | SV* lv; |
3008 | if (!defer) | |
cea2e8a9 | 3009 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 3010 | lv = sv_newmortal(); |
3011 | sv_upgrade(lv, SVt_PVLV); | |
3012 | LvTYPE(lv) = 'y'; | |
a0714e2c | 3013 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); |
b37c2d43 | 3014 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
68dc0745 | 3015 | LvTARGOFF(lv) = elem; |
3016 | LvTARGLEN(lv) = 1; | |
3017 | PUSHs(lv); | |
3018 | RETURN; | |
3019 | } | |
4ad10a0b VP |
3020 | if (localizing) { |
3021 | if (preeminent) | |
3022 | save_aelem(av, elem, svp); | |
3023 | else | |
3024 | SAVEADELETE(av, elem); | |
3025 | } | |
533c011a NIS |
3026 | else if (PL_op->op_private & OPpDEREF) |
3027 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 3028 | } |
3280af22 | 3029 | sv = (svp ? *svp : &PL_sv_undef); |
39cf747a | 3030 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 3031 | mg_get(sv); |
be6c24e0 | 3032 | PUSHs(sv); |
a0d0e21e LW |
3033 | RETURN; |
3034 | } | |
3035 | ||
02a9e968 | 3036 | void |
864dbfa3 | 3037 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 | 3038 | { |
7918f24d NC |
3039 | PERL_ARGS_ASSERT_VIVIFY_REF; |
3040 | ||
5b295bef | 3041 | SvGETMAGIC(sv); |
02a9e968 CS |
3042 | if (!SvOK(sv)) { |
3043 | if (SvREADONLY(sv)) | |
6ad8f254 | 3044 | Perl_croak_no_modify(aTHX); |
43230e26 | 3045 | prepare_SV_for_RV(sv); |
68dc0745 | 3046 | switch (to_what) { |
5f05dabc | 3047 | case OPpDEREF_SV: |
561b68a9 | 3048 | SvRV_set(sv, newSV(0)); |
5f05dabc | 3049 | break; |
3050 | case OPpDEREF_AV: | |
ad64d0ec | 3051 | SvRV_set(sv, MUTABLE_SV(newAV())); |
5f05dabc | 3052 | break; |
3053 | case OPpDEREF_HV: | |
ad64d0ec | 3054 | SvRV_set(sv, MUTABLE_SV(newHV())); |
5f05dabc | 3055 | break; |
3056 | } | |
02a9e968 CS |
3057 | SvROK_on(sv); |
3058 | SvSETMAGIC(sv); | |
3059 | } | |
3060 | } | |
3061 | ||
a0d0e21e LW |
3062 | PP(pp_method) |
3063 | { | |
97aff369 | 3064 | dVAR; dSP; |
890ce7af | 3065 | SV* const sv = TOPs; |
f5d5a27c CS |
3066 | |
3067 | if (SvROK(sv)) { | |
890ce7af | 3068 | SV* const rsv = SvRV(sv); |
f5d5a27c CS |
3069 | if (SvTYPE(rsv) == SVt_PVCV) { |
3070 | SETs(rsv); | |
3071 | RETURN; | |
3072 | } | |
3073 | } | |
3074 | ||
4608196e | 3075 | SETs(method_common(sv, NULL)); |
f5d5a27c CS |
3076 | RETURN; |
3077 | } | |
3078 | ||
3079 | PP(pp_method_named) | |
3080 | { | |
97aff369 | 3081 | dVAR; dSP; |
890ce7af | 3082 | SV* const sv = cSVOP_sv; |
c158a4fd | 3083 | U32 hash = SvSHARED_HASH(sv); |
f5d5a27c CS |
3084 | |
3085 | XPUSHs(method_common(sv, &hash)); | |
3086 | RETURN; | |
3087 | } | |
3088 | ||
3089 | STATIC SV * | |
3090 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
3091 | { | |
97aff369 | 3092 | dVAR; |
a0d0e21e LW |
3093 | SV* ob; |
3094 | GV* gv; | |
56304f61 | 3095 | HV* stash; |
6136c704 | 3096 | const char* packname = NULL; |
a0714e2c | 3097 | SV *packsv = NULL; |
ac91690f | 3098 | STRLEN packlen; |
46c461b5 | 3099 | SV * const sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c | 3100 | |
7918f24d NC |
3101 | PERL_ARGS_ASSERT_METHOD_COMMON; |
3102 | ||
4f1b7578 | 3103 | if (!sv) |
a214957f VP |
3104 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" on an undefined value", |
3105 | SVfARG(meth)); | |
4f1b7578 | 3106 | |
5b295bef | 3107 | SvGETMAGIC(sv); |
a0d0e21e | 3108 | if (SvROK(sv)) |
ad64d0ec | 3109 | ob = MUTABLE_SV(SvRV(sv)); |
a0d0e21e LW |
3110 | else { |
3111 | GV* iogv; | |
a0d0e21e | 3112 | |
af09ea45 | 3113 | /* this isn't a reference */ |
5c144d81 | 3114 | if(SvOK(sv) && (packname = SvPV_const(sv, packlen))) { |
b464bac0 | 3115 | const HE* const he = hv_fetch_ent(PL_stashcache, sv, 0, 0); |
081fc587 | 3116 | if (he) { |
5e6396ae | 3117 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
081fc587 AB |
3118 | goto fetch; |
3119 | } | |
3120 | } | |
3121 | ||
a0d0e21e | 3122 | if (!SvOK(sv) || |
05f5af9a | 3123 | !(packname) || |
f776e3cd | 3124 | !(iogv = gv_fetchsv(sv, 0, SVt_PVIO)) || |
ad64d0ec | 3125 | !(ob=MUTABLE_SV(GvIO(iogv)))) |
a0d0e21e | 3126 | { |
af09ea45 | 3127 | /* this isn't the name of a filehandle either */ |
1c846c1f | 3128 | if (!packname || |
fd400ab9 | 3129 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 3130 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
3131 | : !isIDFIRST(*packname) |
3132 | )) | |
3133 | { | |
a214957f VP |
3134 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" %s", |
3135 | SVfARG(meth), | |
f5d5a27c CS |
3136 | SvOK(sv) ? "without a package or object reference" |
3137 | : "on an undefined value"); | |
834a4ddd | 3138 | } |
af09ea45 | 3139 | /* assume it's a package name */ |
da51bb9b | 3140 | stash = gv_stashpvn(packname, packlen, 0); |
0dae17bd GS |
3141 | if (!stash) |
3142 | packsv = sv; | |
081fc587 | 3143 | else { |
d4c19fe8 | 3144 | SV* const ref = newSViv(PTR2IV(stash)); |
04fe65b0 | 3145 | (void)hv_store(PL_stashcache, packname, packlen, ref, 0); |
7e8961ec | 3146 | } |
ac91690f | 3147 | goto fetch; |
a0d0e21e | 3148 | } |
af09ea45 | 3149 | /* it _is_ a filehandle name -- replace with a reference */ |
ad64d0ec | 3150 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV(MUTABLE_SV(iogv))); |
a0d0e21e LW |
3151 | } |
3152 | ||
af09ea45 | 3153 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 | 3154 | if (!ob || !(SvOBJECT(ob) |
6e592b3a BM |
3155 | || (SvTYPE(ob) == SVt_PVGV |
3156 | && isGV_with_GP(ob) | |
159b6efe | 3157 | && (ob = MUTABLE_SV(GvIO((const GV *)ob))) |
f0d43078 GS |
3158 | && SvOBJECT(ob)))) |
3159 | { | |
a214957f | 3160 | const char * const name = SvPV_nolen_const(meth); |
f5d5a27c | 3161 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
59e7186f | 3162 | (SvSCREAM(meth) && strEQ(name,"isa")) ? "DOES" : |
f5d5a27c | 3163 | name); |
f0d43078 | 3164 | } |
a0d0e21e | 3165 | |
56304f61 | 3166 | stash = SvSTASH(ob); |
a0d0e21e | 3167 | |
ac91690f | 3168 | fetch: |
af09ea45 IK |
3169 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3170 | gv_fetchmethod can cope (it seems they can) */ | |
3171 | ||
f5d5a27c CS |
3172 | /* shortcut for simple names */ |
3173 | if (hashp) { | |
b464bac0 | 3174 | const HE* const he = hv_fetch_ent(stash, meth, 0, *hashp); |
f5d5a27c | 3175 | if (he) { |
159b6efe | 3176 | gv = MUTABLE_GV(HeVAL(he)); |
f5d5a27c | 3177 | if (isGV(gv) && GvCV(gv) && |
e1a479c5 | 3178 | (!GvCVGEN(gv) || GvCVGEN(gv) |
dd69841b | 3179 | == (PL_sub_generation + HvMROMETA(stash)->cache_gen))) |
ad64d0ec | 3180 | return MUTABLE_SV(GvCV(gv)); |
f5d5a27c CS |
3181 | } |
3182 | } | |
3183 | ||
a214957f VP |
3184 | gv = gv_fetchmethod_flags(stash ? stash : MUTABLE_HV(packsv), |
3185 | SvPV_nolen_const(meth), | |
256d1bb2 | 3186 | GV_AUTOLOAD | GV_CROAK); |
9b9d0b15 | 3187 | |
256d1bb2 | 3188 | assert(gv); |
9b9d0b15 | 3189 | |
ad64d0ec | 3190 | return isGV(gv) ? MUTABLE_SV(GvCV(gv)) : MUTABLE_SV(gv); |
a0d0e21e | 3191 | } |
241d1a3b NC |
3192 | |
3193 | /* | |
3194 | * Local variables: | |
3195 | * c-indentation-style: bsd | |
3196 | * c-basic-offset: 4 | |
3197 | * indent-tabs-mode: t | |
3198 | * End: | |
3199 | * | |
37442d52 RGS |
3200 | * ex: set ts=8 sts=4 sw=4 noet: |
3201 | */ |