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; |
748a9306 | 115 | |
533c011a | 116 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
0bd48802 AL |
117 | SV * const temp = left; |
118 | left = right; right = temp; | |
a0d0e21e | 119 | } |
3280af22 | 120 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e | 121 | TAINT_NOT; |
e26df76a | 122 | if (PL_op->op_private & OPpASSIGN_CV_TO_GV) { |
6136c704 | 123 | SV * const cv = SvRV(left); |
e26df76a NC |
124 | const U32 cv_type = SvTYPE(cv); |
125 | const U32 gv_type = SvTYPE(right); | |
6136c704 | 126 | const bool got_coderef = cv_type == SVt_PVCV || cv_type == SVt_PVFM; |
e26df76a NC |
127 | |
128 | if (!got_coderef) { | |
129 | assert(SvROK(cv)); | |
130 | } | |
131 | ||
ae6d515f | 132 | /* Can do the optimisation if right (LVALUE) is not a typeglob, |
e26df76a NC |
133 | left (RVALUE) is a reference to something, and we're in void |
134 | context. */ | |
135 | if (!got_coderef && gv_type != SVt_PVGV && GIMME_V == G_VOID) { | |
136 | /* Is the target symbol table currently empty? */ | |
6136c704 | 137 | GV * const gv = gv_fetchsv(right, GV_NOINIT, SVt_PVGV); |
bb112e5a | 138 | if (SvTYPE(gv) != SVt_PVGV && !SvOK(gv)) { |
e26df76a NC |
139 | /* Good. Create a new proxy constant subroutine in the target. |
140 | The gv becomes a(nother) reference to the constant. */ | |
141 | SV *const value = SvRV(cv); | |
142 | ||
ad64d0ec | 143 | SvUPGRADE(MUTABLE_SV(gv), SVt_IV); |
1ccdb730 | 144 | SvPCS_IMPORTED_on(gv); |
e26df76a | 145 | SvRV_set(gv, value); |
b37c2d43 | 146 | SvREFCNT_inc_simple_void(value); |
e26df76a NC |
147 | SETs(right); |
148 | RETURN; | |
149 | } | |
150 | } | |
151 | ||
152 | /* Need to fix things up. */ | |
153 | if (gv_type != SVt_PVGV) { | |
154 | /* Need to fix GV. */ | |
ad64d0ec | 155 | right = MUTABLE_SV(gv_fetchsv(right, GV_ADD, SVt_PVGV)); |
e26df76a NC |
156 | } |
157 | ||
158 | if (!got_coderef) { | |
159 | /* We've been returned a constant rather than a full subroutine, | |
160 | but they expect a subroutine reference to apply. */ | |
53a42478 | 161 | if (SvROK(cv)) { |
d343c3ef | 162 | ENTER_with_name("sassign_coderef"); |
53a42478 NC |
163 | SvREFCNT_inc_void(SvRV(cv)); |
164 | /* newCONSTSUB takes a reference count on the passed in SV | |
165 | from us. We set the name to NULL, otherwise we get into | |
166 | all sorts of fun as the reference to our new sub is | |
167 | donated to the GV that we're about to assign to. | |
168 | */ | |
ad64d0ec NC |
169 | SvRV_set(left, MUTABLE_SV(newCONSTSUB(GvSTASH(right), NULL, |
170 | SvRV(cv)))); | |
53a42478 | 171 | SvREFCNT_dec(cv); |
d343c3ef | 172 | LEAVE_with_name("sassign_coderef"); |
53a42478 NC |
173 | } else { |
174 | /* What can happen for the corner case *{"BONK"} = \&{"BONK"}; | |
175 | is that | |
176 | First: ops for \&{"BONK"}; return us the constant in the | |
177 | symbol table | |
178 | Second: ops for *{"BONK"} cause that symbol table entry | |
179 | (and our reference to it) to be upgraded from RV | |
180 | to typeblob) | |
181 | Thirdly: We get here. cv is actually PVGV now, and its | |
182 | GvCV() is actually the subroutine we're looking for | |
183 | ||
184 | So change the reference so that it points to the subroutine | |
185 | of that typeglob, as that's what they were after all along. | |
186 | */ | |
159b6efe | 187 | GV *const upgraded = MUTABLE_GV(cv); |
53a42478 NC |
188 | CV *const source = GvCV(upgraded); |
189 | ||
190 | assert(source); | |
191 | assert(CvFLAGS(source) & CVf_CONST); | |
192 | ||
193 | SvREFCNT_inc_void(source); | |
194 | SvREFCNT_dec(upgraded); | |
ad64d0ec | 195 | SvRV_set(left, MUTABLE_SV(source)); |
53a42478 | 196 | } |
e26df76a | 197 | } |
53a42478 | 198 | |
e26df76a | 199 | } |
54310121 | 200 | SvSetMagicSV(right, left); |
a0d0e21e LW |
201 | SETs(right); |
202 | RETURN; | |
203 | } | |
204 | ||
205 | PP(pp_cond_expr) | |
206 | { | |
97aff369 | 207 | dVAR; dSP; |
f410a211 | 208 | PERL_ASYNC_CHECK(); |
a0d0e21e | 209 | if (SvTRUEx(POPs)) |
1a67a97c | 210 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 211 | else |
1a67a97c | 212 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
213 | } |
214 | ||
215 | PP(pp_unstack) | |
216 | { | |
97aff369 | 217 | dVAR; |
a0d0e21e | 218 | I32 oldsave; |
8f3964af | 219 | PERL_ASYNC_CHECK(); |
a0d0e21e | 220 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 221 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 222 | FREETMPS; |
3280af22 | 223 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
224 | LEAVE_SCOPE(oldsave); |
225 | return NORMAL; | |
226 | } | |
227 | ||
a0d0e21e LW |
228 | PP(pp_concat) |
229 | { | |
97aff369 | 230 | dVAR; dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 LW |
231 | { |
232 | dPOPTOPssrl; | |
8d6d96c1 HS |
233 | bool lbyte; |
234 | STRLEN rlen; | |
d4c19fe8 | 235 | const char *rpv = NULL; |
a6b599c7 | 236 | bool rbyte = FALSE; |
a9c4fd4e | 237 | bool rcopied = FALSE; |
8d6d96c1 HS |
238 | |
239 | if (TARG == right && right != left) { | |
c75ab21a RH |
240 | /* mg_get(right) may happen here ... */ |
241 | rpv = SvPV_const(right, rlen); | |
242 | rbyte = !DO_UTF8(right); | |
59cd0e26 | 243 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
349d4f2f | 244 | rpv = SvPV_const(right, rlen); /* no point setting UTF-8 here */ |
db79b45b | 245 | rcopied = TRUE; |
8d6d96c1 | 246 | } |
7889fe52 | 247 | |
8d6d96c1 | 248 | if (TARG != left) { |
a9c4fd4e | 249 | STRLEN llen; |
5c144d81 | 250 | const char* const lpv = SvPV_const(left, llen); /* mg_get(left) may happen here */ |
90f5826e | 251 | lbyte = !DO_UTF8(left); |
8d6d96c1 HS |
252 | sv_setpvn(TARG, lpv, llen); |
253 | if (!lbyte) | |
254 | SvUTF8_on(TARG); | |
255 | else | |
256 | SvUTF8_off(TARG); | |
257 | } | |
258 | else { /* TARG == left */ | |
a9c4fd4e | 259 | STRLEN llen; |
5b295bef | 260 | SvGETMAGIC(left); /* or mg_get(left) may happen here */ |
c75ab21a RH |
261 | if (!SvOK(TARG)) { |
262 | if (left == right && ckWARN(WARN_UNINITIALIZED)) | |
263 | report_uninit(right); | |
76f68e9b | 264 | sv_setpvs(left, ""); |
c75ab21a | 265 | } |
10516c54 | 266 | (void)SvPV_nomg_const(left, llen); /* Needed to set UTF8 flag */ |
90f5826e TS |
267 | lbyte = !DO_UTF8(left); |
268 | if (IN_BYTES) | |
269 | SvUTF8_off(TARG); | |
8d6d96c1 | 270 | } |
a12c0f56 | 271 | |
c75ab21a RH |
272 | /* or mg_get(right) may happen here */ |
273 | if (!rcopied) { | |
274 | rpv = SvPV_const(right, rlen); | |
275 | rbyte = !DO_UTF8(right); | |
276 | } | |
8d6d96c1 HS |
277 | if (lbyte != rbyte) { |
278 | if (lbyte) | |
279 | sv_utf8_upgrade_nomg(TARG); | |
280 | else { | |
db79b45b | 281 | if (!rcopied) |
59cd0e26 | 282 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
8d6d96c1 | 283 | sv_utf8_upgrade_nomg(right); |
349d4f2f | 284 | rpv = SvPV_const(right, rlen); |
69b47968 | 285 | } |
a0d0e21e | 286 | } |
8d6d96c1 | 287 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 288 | |
a0d0e21e LW |
289 | SETTARG; |
290 | RETURN; | |
748a9306 | 291 | } |
a0d0e21e LW |
292 | } |
293 | ||
294 | PP(pp_padsv) | |
295 | { | |
97aff369 | 296 | dVAR; dSP; dTARGET; |
a0d0e21e | 297 | XPUSHs(TARG); |
533c011a NIS |
298 | if (PL_op->op_flags & OPf_MOD) { |
299 | if (PL_op->op_private & OPpLVAL_INTRO) | |
952306ac RGS |
300 | if (!(PL_op->op_private & OPpPAD_STATE)) |
301 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); | |
a62b51b8 | 302 | if (PL_op->op_private & OPpDEREF) { |
8ec5e241 | 303 | PUTBACK; |
dd2155a4 | 304 | vivify_ref(PAD_SVl(PL_op->op_targ), PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
305 | SPAGAIN; |
306 | } | |
4633a7c4 | 307 | } |
a0d0e21e LW |
308 | RETURN; |
309 | } | |
310 | ||
311 | PP(pp_readline) | |
312 | { | |
97aff369 | 313 | dVAR; |
f5284f61 | 314 | tryAMAGICunTARGET(iter, 0); |
159b6efe | 315 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
6e592b3a BM |
316 | if (!isGV_with_GP(PL_last_in_gv)) { |
317 | if (SvROK(PL_last_in_gv) && isGV_with_GP(SvRV(PL_last_in_gv))) | |
159b6efe | 318 | PL_last_in_gv = MUTABLE_GV(SvRV(PL_last_in_gv)); |
8efb3254 | 319 | else { |
f5284f61 | 320 | dSP; |
ad64d0ec | 321 | XPUSHs(MUTABLE_SV(PL_last_in_gv)); |
f5284f61 | 322 | PUTBACK; |
cea2e8a9 | 323 | pp_rv2gv(); |
159b6efe | 324 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
f5284f61 IZ |
325 | } |
326 | } | |
a0d0e21e LW |
327 | return do_readline(); |
328 | } | |
329 | ||
330 | PP(pp_eq) | |
331 | { | |
97aff369 | 332 | dVAR; dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f | 333 | #ifndef NV_PRESERVES_UV |
0bdaccee | 334 | if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) { |
e61d22ef NC |
335 | SP--; |
336 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); | |
4c9fe80f AS |
337 | RETURN; |
338 | } | |
339 | #endif | |
28e5dec8 JH |
340 | #ifdef PERL_PRESERVE_IVUV |
341 | SvIV_please(TOPs); | |
342 | if (SvIOK(TOPs)) { | |
4c9fe80f AS |
343 | /* Unless the left argument is integer in range we are going |
344 | to have to use NV maths. Hence only attempt to coerce the | |
345 | right argument if we know the left is integer. */ | |
28e5dec8 JH |
346 | SvIV_please(TOPm1s); |
347 | if (SvIOK(TOPm1s)) { | |
0bd48802 AL |
348 | const bool auvok = SvUOK(TOPm1s); |
349 | const bool buvok = SvUOK(TOPs); | |
a12c0f56 | 350 | |
1605159e NC |
351 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
352 | /* Casting IV to UV before comparison isn't going to matter | |
353 | on 2s complement. On 1s complement or sign&magnitude | |
354 | (if we have any of them) it could to make negative zero | |
355 | differ from normal zero. As I understand it. (Need to | |
356 | check - is negative zero implementation defined behaviour | |
357 | anyway?). NWC */ | |
0bd48802 AL |
358 | const UV buv = SvUVX(POPs); |
359 | const UV auv = SvUVX(TOPs); | |
28e5dec8 | 360 | |
28e5dec8 JH |
361 | SETs(boolSV(auv == buv)); |
362 | RETURN; | |
363 | } | |
364 | { /* ## Mixed IV,UV ## */ | |
1605159e | 365 | SV *ivp, *uvp; |
28e5dec8 | 366 | IV iv; |
28e5dec8 | 367 | |
1605159e | 368 | /* == is commutative so doesn't matter which is left or right */ |
28e5dec8 | 369 | if (auvok) { |
1605159e NC |
370 | /* top of stack (b) is the iv */ |
371 | ivp = *SP; | |
372 | uvp = *--SP; | |
373 | } else { | |
374 | uvp = *SP; | |
375 | ivp = *--SP; | |
376 | } | |
377 | iv = SvIVX(ivp); | |
d4c19fe8 | 378 | if (iv < 0) |
1605159e NC |
379 | /* As uv is a UV, it's >0, so it cannot be == */ |
380 | SETs(&PL_sv_no); | |
d4c19fe8 AL |
381 | else |
382 | /* we know iv is >= 0 */ | |
383 | SETs(boolSV((UV)iv == SvUVX(uvp))); | |
28e5dec8 JH |
384 | RETURN; |
385 | } | |
386 | } | |
387 | } | |
388 | #endif | |
a0d0e21e | 389 | { |
cab190d4 JD |
390 | #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan) |
391 | dPOPTOPnnrl; | |
392 | if (Perl_isnan(left) || Perl_isnan(right)) | |
393 | RETSETNO; | |
394 | SETs(boolSV(left == right)); | |
395 | #else | |
a0d0e21e | 396 | dPOPnv; |
54310121 | 397 | SETs(boolSV(TOPn == value)); |
cab190d4 | 398 | #endif |
a0d0e21e LW |
399 | RETURN; |
400 | } | |
401 | } | |
402 | ||
403 | PP(pp_preinc) | |
404 | { | |
97aff369 | 405 | dVAR; dSP; |
6e592b3a | 406 | if (SvTYPE(TOPs) >= SVt_PVAV || isGV_with_GP(TOPs)) |
f1f66076 | 407 | DIE(aTHX_ "%s", PL_no_modify); |
3510b4a1 NC |
408 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
409 | && SvIVX(TOPs) != IV_MAX) | |
55497cff | 410 | { |
45977657 | 411 | SvIV_set(TOPs, SvIVX(TOPs) + 1); |
55497cff | 412 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 413 | } |
28e5dec8 | 414 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 | 415 | sv_inc(TOPs); |
a0d0e21e LW |
416 | SvSETMAGIC(TOPs); |
417 | return NORMAL; | |
418 | } | |
419 | ||
420 | PP(pp_or) | |
421 | { | |
97aff369 | 422 | dVAR; dSP; |
f410a211 | 423 | PERL_ASYNC_CHECK(); |
a0d0e21e LW |
424 | if (SvTRUE(TOPs)) |
425 | RETURN; | |
426 | else { | |
c960fc3b SP |
427 | if (PL_op->op_type == OP_OR) |
428 | --SP; | |
a0d0e21e LW |
429 | RETURNOP(cLOGOP->op_other); |
430 | } | |
431 | } | |
432 | ||
25a55bd7 | 433 | PP(pp_defined) |
c963b151 | 434 | { |
97aff369 | 435 | dVAR; dSP; |
6136c704 AL |
436 | register SV* sv; |
437 | bool defined; | |
25a55bd7 | 438 | const int op_type = PL_op->op_type; |
ea5195b7 | 439 | const bool is_dor = (op_type == OP_DOR || op_type == OP_DORASSIGN); |
c963b151 | 440 | |
6136c704 | 441 | if (is_dor) { |
f410a211 | 442 | PERL_ASYNC_CHECK(); |
25a55bd7 SP |
443 | sv = TOPs; |
444 | if (!sv || !SvANY(sv)) { | |
2bd49cfc NC |
445 | if (op_type == OP_DOR) |
446 | --SP; | |
25a55bd7 SP |
447 | RETURNOP(cLOGOP->op_other); |
448 | } | |
b7c44293 RGS |
449 | } |
450 | else { | |
451 | /* OP_DEFINED */ | |
25a55bd7 SP |
452 | sv = POPs; |
453 | if (!sv || !SvANY(sv)) | |
454 | RETPUSHNO; | |
b7c44293 | 455 | } |
25a55bd7 | 456 | |
6136c704 | 457 | defined = FALSE; |
c963b151 BD |
458 | switch (SvTYPE(sv)) { |
459 | case SVt_PVAV: | |
460 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 461 | defined = TRUE; |
c963b151 BD |
462 | break; |
463 | case SVt_PVHV: | |
464 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 465 | defined = TRUE; |
c963b151 BD |
466 | break; |
467 | case SVt_PVCV: | |
468 | if (CvROOT(sv) || CvXSUB(sv)) | |
25a55bd7 | 469 | defined = TRUE; |
c963b151 BD |
470 | break; |
471 | default: | |
5b295bef | 472 | SvGETMAGIC(sv); |
c963b151 | 473 | if (SvOK(sv)) |
25a55bd7 | 474 | defined = TRUE; |
6136c704 | 475 | break; |
c963b151 | 476 | } |
6136c704 AL |
477 | |
478 | if (is_dor) { | |
c960fc3b SP |
479 | if(defined) |
480 | RETURN; | |
481 | if(op_type == OP_DOR) | |
482 | --SP; | |
25a55bd7 | 483 | RETURNOP(cLOGOP->op_other); |
25a55bd7 | 484 | } |
d9aa96a4 SP |
485 | /* assuming OP_DEFINED */ |
486 | if(defined) | |
487 | RETPUSHYES; | |
488 | RETPUSHNO; | |
c963b151 BD |
489 | } |
490 | ||
a0d0e21e LW |
491 | PP(pp_add) |
492 | { | |
800401ee JH |
493 | dVAR; dSP; dATARGET; bool useleft; SV *svl, *svr; |
494 | tryAMAGICbin(add,opASSIGN); | |
495 | svl = sv_2num(TOPm1s); | |
496 | svr = sv_2num(TOPs); | |
497 | useleft = USE_LEFT(svl); | |
28e5dec8 JH |
498 | #ifdef PERL_PRESERVE_IVUV |
499 | /* We must see if we can perform the addition with integers if possible, | |
500 | as the integer code detects overflow while the NV code doesn't. | |
501 | If either argument hasn't had a numeric conversion yet attempt to get | |
502 | the IV. It's important to do this now, rather than just assuming that | |
503 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
504 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
505 | integer in case the second argument is IV=9223372036854775806 | |
506 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
507 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
508 | ||
509 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
510 | fp maths for integer values. |
511 | ||
a00b5bd3 | 512 | How to detect overflow? |
7dca457a NC |
513 | |
514 | C 99 section 6.2.6.1 says | |
515 | ||
516 | The range of nonnegative values of a signed integer type is a subrange | |
517 | of the corresponding unsigned integer type, and the representation of | |
518 | the same value in each type is the same. A computation involving | |
519 | unsigned operands can never overflow, because a result that cannot be | |
520 | represented by the resulting unsigned integer type is reduced modulo | |
521 | the number that is one greater than the largest value that can be | |
522 | represented by the resulting type. | |
523 | ||
524 | (the 9th paragraph) | |
525 | ||
526 | which I read as "unsigned ints wrap." | |
527 | ||
528 | signed integer overflow seems to be classed as "exception condition" | |
529 | ||
530 | If an exceptional condition occurs during the evaluation of an | |
531 | expression (that is, if the result is not mathematically defined or not | |
532 | in the range of representable values for its type), the behavior is | |
533 | undefined. | |
534 | ||
535 | (6.5, the 5th paragraph) | |
536 | ||
537 | I had assumed that on 2s complement machines signed arithmetic would | |
538 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
539 | everything perl builds on would be happy. After much wailing and | |
540 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
541 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
542 | unsigned code below is actually shorter than the old code. :-) | |
543 | */ | |
544 | ||
800401ee JH |
545 | SvIV_please(svr); |
546 | if (SvIOK(svr)) { | |
28e5dec8 JH |
547 | /* Unless the left argument is integer in range we are going to have to |
548 | use NV maths. Hence only attempt to coerce the right argument if | |
549 | we know the left is integer. */ | |
9c5ffd7c JH |
550 | register UV auv = 0; |
551 | bool auvok = FALSE; | |
7dca457a NC |
552 | bool a_valid = 0; |
553 | ||
28e5dec8 | 554 | if (!useleft) { |
7dca457a NC |
555 | auv = 0; |
556 | a_valid = auvok = 1; | |
557 | /* left operand is undef, treat as zero. + 0 is identity, | |
558 | Could SETi or SETu right now, but space optimise by not adding | |
559 | lots of code to speed up what is probably a rarish case. */ | |
560 | } else { | |
561 | /* Left operand is defined, so is it IV? */ | |
800401ee JH |
562 | SvIV_please(svl); |
563 | if (SvIOK(svl)) { | |
564 | if ((auvok = SvUOK(svl))) | |
565 | auv = SvUVX(svl); | |
7dca457a | 566 | else { |
800401ee | 567 | register const IV aiv = SvIVX(svl); |
7dca457a NC |
568 | if (aiv >= 0) { |
569 | auv = aiv; | |
570 | auvok = 1; /* Now acting as a sign flag. */ | |
571 | } else { /* 2s complement assumption for IV_MIN */ | |
572 | auv = (UV)-aiv; | |
573 | } | |
574 | } | |
575 | a_valid = 1; | |
28e5dec8 JH |
576 | } |
577 | } | |
7dca457a NC |
578 | if (a_valid) { |
579 | bool result_good = 0; | |
580 | UV result; | |
581 | register UV buv; | |
800401ee | 582 | bool buvok = SvUOK(svr); |
a00b5bd3 | 583 | |
7dca457a | 584 | if (buvok) |
800401ee | 585 | buv = SvUVX(svr); |
7dca457a | 586 | else { |
800401ee | 587 | register const IV biv = SvIVX(svr); |
7dca457a NC |
588 | if (biv >= 0) { |
589 | buv = biv; | |
590 | buvok = 1; | |
591 | } else | |
592 | buv = (UV)-biv; | |
593 | } | |
594 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 595 | else "IV" now, independent of how it came in. |
7dca457a NC |
596 | if a, b represents positive, A, B negative, a maps to -A etc |
597 | a + b => (a + b) | |
598 | A + b => -(a - b) | |
599 | a + B => (a - b) | |
600 | A + B => -(a + b) | |
601 | all UV maths. negate result if A negative. | |
602 | add if signs same, subtract if signs differ. */ | |
603 | ||
604 | if (auvok ^ buvok) { | |
605 | /* Signs differ. */ | |
606 | if (auv >= buv) { | |
607 | result = auv - buv; | |
608 | /* Must get smaller */ | |
609 | if (result <= auv) | |
610 | result_good = 1; | |
611 | } else { | |
612 | result = buv - auv; | |
613 | if (result <= buv) { | |
614 | /* result really should be -(auv-buv). as its negation | |
615 | of true value, need to swap our result flag */ | |
616 | auvok = !auvok; | |
617 | result_good = 1; | |
28e5dec8 JH |
618 | } |
619 | } | |
7dca457a NC |
620 | } else { |
621 | /* Signs same */ | |
622 | result = auv + buv; | |
623 | if (result >= auv) | |
624 | result_good = 1; | |
625 | } | |
626 | if (result_good) { | |
627 | SP--; | |
628 | if (auvok) | |
28e5dec8 | 629 | SETu( result ); |
7dca457a NC |
630 | else { |
631 | /* Negate result */ | |
632 | if (result <= (UV)IV_MIN) | |
633 | SETi( -(IV)result ); | |
634 | else { | |
635 | /* result valid, but out of range for IV. */ | |
636 | SETn( -(NV)result ); | |
28e5dec8 JH |
637 | } |
638 | } | |
7dca457a NC |
639 | RETURN; |
640 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
641 | } |
642 | } | |
643 | #endif | |
a0d0e21e | 644 | { |
4efa5a16 RD |
645 | NV value = SvNV(svr); |
646 | (void)POPs; | |
28e5dec8 JH |
647 | if (!useleft) { |
648 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
649 | SETn(value); | |
650 | RETURN; | |
651 | } | |
4efa5a16 | 652 | SETn( value + SvNV(svl) ); |
28e5dec8 | 653 | RETURN; |
a0d0e21e LW |
654 | } |
655 | } | |
656 | ||
657 | PP(pp_aelemfast) | |
658 | { | |
97aff369 | 659 | dVAR; dSP; |
502c6561 NC |
660 | AV * const av = PL_op->op_flags & OPf_SPECIAL |
661 | ? MUTABLE_AV(PAD_SV(PL_op->op_targ)) : GvAV(cGVOP_gv); | |
a3b680e6 | 662 | const U32 lval = PL_op->op_flags & OPf_MOD; |
0bd48802 | 663 | SV** const svp = av_fetch(av, PL_op->op_private, lval); |
3280af22 | 664 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 665 | EXTEND(SP, 1); |
39cf747a | 666 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 667 | mg_get(sv); |
be6c24e0 | 668 | PUSHs(sv); |
a0d0e21e LW |
669 | RETURN; |
670 | } | |
671 | ||
672 | PP(pp_join) | |
673 | { | |
97aff369 | 674 | dVAR; dSP; dMARK; dTARGET; |
a0d0e21e LW |
675 | MARK++; |
676 | do_join(TARG, *MARK, MARK, SP); | |
677 | SP = MARK; | |
678 | SETs(TARG); | |
679 | RETURN; | |
680 | } | |
681 | ||
682 | PP(pp_pushre) | |
683 | { | |
97aff369 | 684 | dVAR; dSP; |
44a8e56a | 685 | #ifdef DEBUGGING |
686 | /* | |
687 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
688 | * will be enough to hold an OP*. | |
689 | */ | |
c4420975 | 690 | SV* const sv = sv_newmortal(); |
44a8e56a | 691 | sv_upgrade(sv, SVt_PVLV); |
692 | LvTYPE(sv) = '/'; | |
533c011a | 693 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 694 | XPUSHs(sv); |
695 | #else | |
ad64d0ec | 696 | XPUSHs(MUTABLE_SV(PL_op)); |
44a8e56a | 697 | #endif |
a0d0e21e LW |
698 | RETURN; |
699 | } | |
700 | ||
701 | /* Oversized hot code. */ | |
702 | ||
703 | PP(pp_print) | |
704 | { | |
27da23d5 | 705 | dVAR; dSP; dMARK; dORIGMARK; |
a0d0e21e | 706 | IO *io; |
760ac839 | 707 | register PerlIO *fp; |
236988e4 | 708 | MAGIC *mg; |
159b6efe NC |
709 | GV * const gv |
710 | = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv; | |
5b468f54 AMS |
711 | |
712 | if (gv && (io = GvIO(gv)) | |
ad64d0ec | 713 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
5b468f54 | 714 | { |
01bb7c6d | 715 | had_magic: |
68dc0745 | 716 | if (MARK == ORIGMARK) { |
1c846c1f | 717 | /* If using default handle then we need to make space to |
a60c0954 NIS |
718 | * pass object as 1st arg, so move other args up ... |
719 | */ | |
4352c267 | 720 | MEXTEND(SP, 1); |
68dc0745 | 721 | ++MARK; |
722 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
723 | ++SP; | |
724 | } | |
725 | PUSHMARK(MARK - 1); | |
ad64d0ec | 726 | *MARK = SvTIED_obj(MUTABLE_SV(io), mg); |
68dc0745 | 727 | PUTBACK; |
d343c3ef | 728 | ENTER_with_name("call_PRINT"); |
3a28f3fb MS |
729 | if( PL_op->op_type == OP_SAY ) { |
730 | /* local $\ = "\n" */ | |
084e50c2 | 731 | SAVEGENERICSV(PL_ors_sv); |
3a28f3fb MS |
732 | PL_ors_sv = newSVpvs("\n"); |
733 | } | |
864dbfa3 | 734 | call_method("PRINT", G_SCALAR); |
d343c3ef | 735 | LEAVE_with_name("call_PRINT"); |
236988e4 | 736 | SPAGAIN; |
68dc0745 | 737 | MARK = ORIGMARK + 1; |
738 | *MARK = *SP; | |
739 | SP = MARK; | |
236988e4 | 740 | RETURN; |
741 | } | |
a0d0e21e | 742 | if (!(io = GvIO(gv))) { |
099be4f1 | 743 | if ((GvEGVx(gv)) && (io = GvIO(GvEGV(gv))) |
ad64d0ec | 744 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
01bb7c6d | 745 | goto had_magic; |
2dd78f96 JH |
746 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
747 | report_evil_fh(gv, io, PL_op->op_type); | |
93189314 | 748 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
749 | goto just_say_no; |
750 | } | |
751 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 752 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 NC |
753 | if (IoIFP(io)) |
754 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); | |
2dd78f96 | 755 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f | 756 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e | 757 | } |
93189314 | 758 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e LW |
759 | goto just_say_no; |
760 | } | |
761 | else { | |
e23d9e2f | 762 | SV * const ofs = GvSV(PL_ofsgv); /* $, */ |
a0d0e21e | 763 | MARK++; |
e23d9e2f | 764 | if (ofs && (SvGMAGICAL(ofs) || SvOK(ofs))) { |
a0d0e21e LW |
765 | while (MARK <= SP) { |
766 | if (!do_print(*MARK, fp)) | |
767 | break; | |
768 | MARK++; | |
769 | if (MARK <= SP) { | |
e23d9e2f CS |
770 | /* don't use 'ofs' here - it may be invalidated by magic callbacks */ |
771 | if (!do_print(GvSV(PL_ofsgv), fp)) { | |
a0d0e21e LW |
772 | MARK--; |
773 | break; | |
774 | } | |
775 | } | |
776 | } | |
777 | } | |
778 | else { | |
779 | while (MARK <= SP) { | |
780 | if (!do_print(*MARK, fp)) | |
781 | break; | |
782 | MARK++; | |
783 | } | |
784 | } | |
785 | if (MARK <= SP) | |
786 | goto just_say_no; | |
787 | else { | |
cfc4a7da GA |
788 | if (PL_op->op_type == OP_SAY) { |
789 | if (PerlIO_write(fp, "\n", 1) == 0 || PerlIO_error(fp)) | |
790 | goto just_say_no; | |
791 | } | |
792 | else if (PL_ors_sv && SvOK(PL_ors_sv)) | |
7889fe52 | 793 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
a0d0e21e LW |
794 | goto just_say_no; |
795 | ||
796 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 797 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
798 | goto just_say_no; |
799 | } | |
800 | } | |
801 | SP = ORIGMARK; | |
e52fd6f4 | 802 | XPUSHs(&PL_sv_yes); |
a0d0e21e LW |
803 | RETURN; |
804 | ||
805 | just_say_no: | |
806 | SP = ORIGMARK; | |
e52fd6f4 | 807 | XPUSHs(&PL_sv_undef); |
a0d0e21e LW |
808 | RETURN; |
809 | } | |
810 | ||
811 | PP(pp_rv2av) | |
812 | { | |
97aff369 | 813 | dVAR; dSP; dTOPss; |
cde874ca | 814 | const I32 gimme = GIMME_V; |
17ab7946 NC |
815 | static const char an_array[] = "an ARRAY"; |
816 | static const char a_hash[] = "a HASH"; | |
817 | const bool is_pp_rv2av = PL_op->op_type == OP_RV2AV; | |
d83b45b8 | 818 | const svtype type = is_pp_rv2av ? SVt_PVAV : SVt_PVHV; |
a0d0e21e LW |
819 | |
820 | if (SvROK(sv)) { | |
821 | wasref: | |
17ab7946 | 822 | tryAMAGICunDEREF_var(is_pp_rv2av ? to_av_amg : to_hv_amg); |
f5284f61 | 823 | |
17ab7946 NC |
824 | sv = SvRV(sv); |
825 | if (SvTYPE(sv) != type) | |
826 | DIE(aTHX_ "Not %s reference", is_pp_rv2av ? an_array : a_hash); | |
533c011a | 827 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 828 | SETs(sv); |
a0d0e21e LW |
829 | RETURN; |
830 | } | |
78f9721b | 831 | else if (LVRET) { |
cde874ca | 832 | if (gimme != G_ARRAY) |
042560a6 | 833 | goto croak_cant_return; |
17ab7946 | 834 | SETs(sv); |
78f9721b SM |
835 | RETURN; |
836 | } | |
82d03984 RGS |
837 | else if (PL_op->op_flags & OPf_MOD |
838 | && PL_op->op_private & OPpLVAL_INTRO) | |
f1f66076 | 839 | Perl_croak(aTHX_ "%s", PL_no_localize_ref); |
a0d0e21e LW |
840 | } |
841 | else { | |
17ab7946 | 842 | if (SvTYPE(sv) == type) { |
533c011a | 843 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 844 | SETs(sv); |
a0d0e21e LW |
845 | RETURN; |
846 | } | |
78f9721b | 847 | else if (LVRET) { |
cde874ca | 848 | if (gimme != G_ARRAY) |
042560a6 | 849 | goto croak_cant_return; |
17ab7946 | 850 | SETs(sv); |
78f9721b SM |
851 | RETURN; |
852 | } | |
a0d0e21e LW |
853 | } |
854 | else { | |
67955e0c | 855 | GV *gv; |
1c846c1f | 856 | |
6e592b3a | 857 | if (!isGV_with_GP(sv)) { |
a0d0e21e LW |
858 | if (SvGMAGICAL(sv)) { |
859 | mg_get(sv); | |
860 | if (SvROK(sv)) | |
861 | goto wasref; | |
862 | } | |
dc3c76f8 NC |
863 | gv = Perl_softref2xv(aTHX_ sv, is_pp_rv2av ? an_array : a_hash, |
864 | type, &sp); | |
865 | if (!gv) | |
866 | RETURN; | |
35cd451c GS |
867 | } |
868 | else { | |
159b6efe | 869 | gv = MUTABLE_GV(sv); |
a0d0e21e | 870 | } |
ad64d0ec | 871 | sv = is_pp_rv2av ? MUTABLE_SV(GvAVn(gv)) : MUTABLE_SV(GvHVn(gv)); |
533c011a | 872 | if (PL_op->op_private & OPpLVAL_INTRO) |
ad64d0ec | 873 | sv = is_pp_rv2av ? MUTABLE_SV(save_ary(gv)) : MUTABLE_SV(save_hash(gv)); |
533c011a | 874 | if (PL_op->op_flags & OPf_REF) { |
17ab7946 | 875 | SETs(sv); |
a0d0e21e LW |
876 | RETURN; |
877 | } | |
78f9721b | 878 | else if (LVRET) { |
cde874ca | 879 | if (gimme != G_ARRAY) |
042560a6 | 880 | goto croak_cant_return; |
17ab7946 | 881 | SETs(sv); |
78f9721b SM |
882 | RETURN; |
883 | } | |
a0d0e21e LW |
884 | } |
885 | } | |
886 | ||
17ab7946 | 887 | if (is_pp_rv2av) { |
502c6561 | 888 | AV *const av = MUTABLE_AV(sv); |
17ab7946 NC |
889 | /* The guts of pp_rv2av, with no intenting change to preserve history |
890 | (until such time as we get tools that can do blame annotation across | |
891 | whitespace changes. */ | |
cde874ca | 892 | if (gimme == G_ARRAY) { |
a3b680e6 | 893 | const I32 maxarg = AvFILL(av) + 1; |
c2444246 | 894 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f | 895 | EXTEND(SP, maxarg); |
93965878 | 896 | if (SvRMAGICAL(av)) { |
1c846c1f | 897 | U32 i; |
eb160463 | 898 | for (i=0; i < (U32)maxarg; i++) { |
0bcc34c2 | 899 | SV ** const svp = av_fetch(av, i, FALSE); |
547d1dd8 HS |
900 | /* See note in pp_helem, and bug id #27839 */ |
901 | SP[i+1] = svp | |
fd69380d | 902 | ? SvGMAGICAL(*svp) ? (mg_get(*svp), *svp) : *svp |
547d1dd8 | 903 | : &PL_sv_undef; |
93965878 | 904 | } |
1c846c1f | 905 | } |
93965878 NIS |
906 | else { |
907 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
908 | } | |
a0d0e21e LW |
909 | SP += maxarg; |
910 | } | |
cde874ca | 911 | else if (gimme == G_SCALAR) { |
a0d0e21e | 912 | dTARGET; |
a3b680e6 | 913 | const I32 maxarg = AvFILL(av) + 1; |
f5284f61 | 914 | SETi(maxarg); |
a0d0e21e | 915 | } |
17ab7946 NC |
916 | } else { |
917 | /* The guts of pp_rv2hv */ | |
be85d344 | 918 | if (gimme == G_ARRAY) { /* array wanted */ |
17ab7946 | 919 | *PL_stack_sp = sv; |
cea2e8a9 | 920 | return do_kv(); |
a0d0e21e | 921 | } |
be85d344 | 922 | else if (gimme == G_SCALAR) { |
a0d0e21e | 923 | dTARGET; |
85fbaab2 | 924 | TARG = Perl_hv_scalar(aTHX_ MUTABLE_HV(sv)); |
5e17dd7d | 925 | SPAGAIN; |
a0d0e21e | 926 | SETTARG; |
a0d0e21e | 927 | } |
17ab7946 | 928 | } |
be85d344 | 929 | RETURN; |
042560a6 NC |
930 | |
931 | croak_cant_return: | |
932 | Perl_croak(aTHX_ "Can't return %s to lvalue scalar context", | |
933 | is_pp_rv2av ? "array" : "hash"); | |
77e217c6 | 934 | RETURN; |
a0d0e21e LW |
935 | } |
936 | ||
10c8fecd GS |
937 | STATIC void |
938 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
939 | { | |
97aff369 | 940 | dVAR; |
7918f24d NC |
941 | |
942 | PERL_ARGS_ASSERT_DO_ODDBALL; | |
943 | ||
10c8fecd GS |
944 | if (*relem) { |
945 | SV *tmpstr; | |
b464bac0 | 946 | const HE *didstore; |
6d822dc4 MS |
947 | |
948 | if (ckWARN(WARN_MISC)) { | |
a3b680e6 | 949 | const char *err; |
10c8fecd GS |
950 | if (relem == firstrelem && |
951 | SvROK(*relem) && | |
952 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
953 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
954 | { | |
a3b680e6 | 955 | err = "Reference found where even-sized list expected"; |
10c8fecd GS |
956 | } |
957 | else | |
a3b680e6 | 958 | err = "Odd number of elements in hash assignment"; |
f1f66076 | 959 | Perl_warner(aTHX_ packWARN(WARN_MISC), "%s", err); |
10c8fecd | 960 | } |
6d822dc4 | 961 | |
561b68a9 | 962 | tmpstr = newSV(0); |
6d822dc4 MS |
963 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
964 | if (SvMAGICAL(hash)) { | |
965 | if (SvSMAGICAL(tmpstr)) | |
966 | mg_set(tmpstr); | |
967 | if (!didstore) | |
968 | sv_2mortal(tmpstr); | |
969 | } | |
970 | TAINT_NOT; | |
10c8fecd GS |
971 | } |
972 | } | |
973 | ||
a0d0e21e LW |
974 | PP(pp_aassign) |
975 | { | |
27da23d5 | 976 | dVAR; dSP; |
3280af22 NIS |
977 | SV **lastlelem = PL_stack_sp; |
978 | SV **lastrelem = PL_stack_base + POPMARK; | |
979 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
980 | SV **firstlelem = lastrelem + 1; |
981 | ||
982 | register SV **relem; | |
983 | register SV **lelem; | |
984 | ||
985 | register SV *sv; | |
986 | register AV *ary; | |
987 | ||
54310121 | 988 | I32 gimme; |
a0d0e21e LW |
989 | HV *hash; |
990 | I32 i; | |
991 | int magic; | |
ca65944e | 992 | int duplicates = 0; |
cbbf8932 | 993 | SV **firsthashrelem = NULL; /* "= 0" keeps gcc 2.95 quiet */ |
5637b936 | 994 | |
3280af22 | 995 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
ca65944e | 996 | gimme = GIMME_V; |
a0d0e21e LW |
997 | |
998 | /* If there's a common identifier on both sides we have to take | |
999 | * special care that assigning the identifier on the left doesn't | |
1000 | * clobber a value on the right that's used later in the list. | |
1001 | */ | |
10c8fecd | 1002 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 | 1003 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd | 1004 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
155aba94 | 1005 | if ((sv = *relem)) { |
a1f49e72 | 1006 | TAINT_NOT; /* Each item is independent */ |
61e5f455 NC |
1007 | |
1008 | /* Dear TODO test in t/op/sort.t, I love you. | |
1009 | (It's relying on a panic, not a "semi-panic" from newSVsv() | |
1010 | and then an assertion failure below.) */ | |
1011 | if (SvIS_FREED(sv)) { | |
1012 | Perl_croak(aTHX_ "panic: attempt to copy freed scalar %p", | |
1013 | (void*)sv); | |
1014 | } | |
1015 | /* Specifically *not* sv_mortalcopy(), as that will steal TEMPs, | |
1016 | and we need a second copy of a temp here. */ | |
1017 | *relem = sv_2mortal(newSVsv(sv)); | |
a1f49e72 | 1018 | } |
10c8fecd | 1019 | } |
a0d0e21e LW |
1020 | } |
1021 | ||
1022 | relem = firstrelem; | |
1023 | lelem = firstlelem; | |
4608196e RGS |
1024 | ary = NULL; |
1025 | hash = NULL; | |
10c8fecd | 1026 | |
a0d0e21e | 1027 | while (lelem <= lastlelem) { |
bbce6d69 | 1028 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
1029 | sv = *lelem++; |
1030 | switch (SvTYPE(sv)) { | |
1031 | case SVt_PVAV: | |
502c6561 | 1032 | ary = MUTABLE_AV(sv); |
748a9306 | 1033 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e | 1034 | av_clear(ary); |
7e42bd57 | 1035 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1036 | i = 0; |
1037 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1038 | SV **didstore; |
a0d0e21e | 1039 | assert(*relem); |
4f0556e9 NC |
1040 | sv = newSV(0); |
1041 | sv_setsv(sv, *relem); | |
a0d0e21e | 1042 | *(relem++) = sv; |
5117ca91 GS |
1043 | didstore = av_store(ary,i++,sv); |
1044 | if (magic) { | |
90630e3c VP |
1045 | if (SvSMAGICAL(sv)) { |
1046 | /* More magic can happen in the mg_set callback, so we | |
1047 | * backup the delaymagic for now. */ | |
1048 | U16 dmbak = PL_delaymagic; | |
1049 | PL_delaymagic = 0; | |
fb73857a | 1050 | mg_set(sv); |
90630e3c VP |
1051 | PL_delaymagic = dmbak; |
1052 | } | |
5117ca91 | 1053 | if (!didstore) |
8127e0e3 | 1054 | sv_2mortal(sv); |
5117ca91 | 1055 | } |
bbce6d69 | 1056 | TAINT_NOT; |
a0d0e21e | 1057 | } |
934dcd01 | 1058 | if (PL_delaymagic & DM_ARRAY) |
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) { | |
90630e3c VP |
1082 | if (SvSMAGICAL(tmpstr)) { |
1083 | U16 dmbak = PL_delaymagic; | |
1084 | PL_delaymagic = 0; | |
fb73857a | 1085 | mg_set(tmpstr); |
90630e3c VP |
1086 | PL_delaymagic = dmbak; |
1087 | } | |
5117ca91 | 1088 | if (!didstore) |
8127e0e3 | 1089 | sv_2mortal(tmpstr); |
5117ca91 | 1090 | } |
bbce6d69 | 1091 | TAINT_NOT; |
8e07c86e | 1092 | } |
6a0deba8 | 1093 | if (relem == lastrelem) { |
10c8fecd | 1094 | do_oddball(hash, relem, firstrelem); |
6a0deba8 | 1095 | relem++; |
1930e939 | 1096 | } |
a0d0e21e LW |
1097 | } |
1098 | break; | |
1099 | default: | |
6fc92669 GS |
1100 | if (SvIMMORTAL(sv)) { |
1101 | if (relem <= lastrelem) | |
1102 | relem++; | |
1103 | break; | |
a0d0e21e LW |
1104 | } |
1105 | if (relem <= lastrelem) { | |
1106 | sv_setsv(sv, *relem); | |
1107 | *(relem++) = sv; | |
1108 | } | |
1109 | else | |
3280af22 | 1110 | sv_setsv(sv, &PL_sv_undef); |
90630e3c VP |
1111 | |
1112 | if (SvSMAGICAL(sv)) { | |
1113 | U16 dmbak = PL_delaymagic; | |
1114 | PL_delaymagic = 0; | |
1115 | mg_set(sv); | |
1116 | PL_delaymagic = dmbak; | |
1117 | } | |
a0d0e21e LW |
1118 | break; |
1119 | } | |
1120 | } | |
3280af22 NIS |
1121 | if (PL_delaymagic & ~DM_DELAY) { |
1122 | if (PL_delaymagic & DM_UID) { | |
a0d0e21e | 1123 | #ifdef HAS_SETRESUID |
fb934a90 RD |
1124 | (void)setresuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1125 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1, | |
1126 | (Uid_t)-1); | |
56febc5e AD |
1127 | #else |
1128 | # ifdef HAS_SETREUID | |
fb934a90 RD |
1129 | (void)setreuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1130 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1); | |
56febc5e AD |
1131 | # else |
1132 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
1133 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1134 | (void)setruid(PL_uid); | |
1135 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 1136 | } |
56febc5e AD |
1137 | # endif /* HAS_SETRUID */ |
1138 | # ifdef HAS_SETEUID | |
b28d0864 | 1139 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
fb934a90 | 1140 | (void)seteuid(PL_euid); |
b28d0864 | 1141 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e | 1142 | } |
56febc5e | 1143 | # endif /* HAS_SETEUID */ |
b28d0864 NIS |
1144 | if (PL_delaymagic & DM_UID) { |
1145 | if (PL_uid != PL_euid) | |
cea2e8a9 | 1146 | DIE(aTHX_ "No setreuid available"); |
b28d0864 | 1147 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e | 1148 | } |
56febc5e AD |
1149 | # endif /* HAS_SETREUID */ |
1150 | #endif /* HAS_SETRESUID */ | |
d8eceb89 JH |
1151 | PL_uid = PerlProc_getuid(); |
1152 | PL_euid = PerlProc_geteuid(); | |
a0d0e21e | 1153 | } |
3280af22 | 1154 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1155 | #ifdef HAS_SETRESGID |
fb934a90 RD |
1156 | (void)setresgid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1157 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1, | |
1158 | (Gid_t)-1); | |
56febc5e AD |
1159 | #else |
1160 | # ifdef HAS_SETREGID | |
fb934a90 RD |
1161 | (void)setregid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1162 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1); | |
56febc5e AD |
1163 | # else |
1164 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
1165 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1166 | (void)setrgid(PL_gid); | |
1167 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 1168 | } |
56febc5e AD |
1169 | # endif /* HAS_SETRGID */ |
1170 | # ifdef HAS_SETEGID | |
b28d0864 | 1171 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
fb934a90 | 1172 | (void)setegid(PL_egid); |
b28d0864 | 1173 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e | 1174 | } |
56febc5e | 1175 | # endif /* HAS_SETEGID */ |
b28d0864 NIS |
1176 | if (PL_delaymagic & DM_GID) { |
1177 | if (PL_gid != PL_egid) | |
cea2e8a9 | 1178 | DIE(aTHX_ "No setregid available"); |
b28d0864 | 1179 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e | 1180 | } |
56febc5e AD |
1181 | # endif /* HAS_SETREGID */ |
1182 | #endif /* HAS_SETRESGID */ | |
d8eceb89 JH |
1183 | PL_gid = PerlProc_getgid(); |
1184 | PL_egid = PerlProc_getegid(); | |
a0d0e21e | 1185 | } |
3280af22 | 1186 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e | 1187 | } |
3280af22 | 1188 | PL_delaymagic = 0; |
54310121 | 1189 | |
54310121 | 1190 | if (gimme == G_VOID) |
1191 | SP = firstrelem - 1; | |
1192 | else if (gimme == G_SCALAR) { | |
1193 | dTARGET; | |
1194 | SP = firstrelem; | |
ca65944e | 1195 | SETi(lastrelem - firstrelem + 1 - duplicates); |
54310121 | 1196 | } |
1197 | else { | |
ca65944e | 1198 | if (ary) |
a0d0e21e | 1199 | SP = lastrelem; |
ca65944e RGS |
1200 | else if (hash) { |
1201 | if (duplicates) { | |
1202 | /* Removes from the stack the entries which ended up as | |
1203 | * duplicated keys in the hash (fix for [perl #24380]) */ | |
1204 | Move(firsthashrelem + duplicates, | |
1205 | firsthashrelem, duplicates, SV**); | |
1206 | lastrelem -= duplicates; | |
1207 | } | |
1208 | SP = lastrelem; | |
1209 | } | |
a0d0e21e LW |
1210 | else |
1211 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 1212 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 1213 | while (relem <= SP) |
3280af22 | 1214 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 1215 | } |
08aeb9f7 | 1216 | |
54310121 | 1217 | RETURN; |
a0d0e21e LW |
1218 | } |
1219 | ||
8782bef2 GB |
1220 | PP(pp_qr) |
1221 | { | |
97aff369 | 1222 | dVAR; dSP; |
c4420975 | 1223 | register PMOP * const pm = cPMOP; |
fe578d7f | 1224 | REGEXP * rx = PM_GETRE(pm); |
10599a69 | 1225 | SV * const pkg = rx ? CALLREG_PACKAGE(rx) : NULL; |
c4420975 | 1226 | SV * const rv = sv_newmortal(); |
288b8c02 NC |
1227 | |
1228 | SvUPGRADE(rv, SVt_IV); | |
c2123ae3 NC |
1229 | /* For a subroutine describing itself as "This is a hacky workaround" I'm |
1230 | loathe to use it here, but it seems to be the right fix. Or close. | |
1231 | The key part appears to be that it's essential for pp_qr to return a new | |
1232 | object (SV), which implies that there needs to be an effective way to | |
1233 | generate a new SV from the existing SV that is pre-compiled in the | |
1234 | optree. */ | |
1235 | SvRV_set(rv, MUTABLE_SV(reg_temp_copy(NULL, rx))); | |
288b8c02 NC |
1236 | SvROK_on(rv); |
1237 | ||
1238 | if (pkg) { | |
1239 | HV* const stash = gv_stashpv(SvPV_nolen(pkg), GV_ADD); | |
a954f6ee | 1240 | SvREFCNT_dec(pkg); |
288b8c02 NC |
1241 | (void)sv_bless(rv, stash); |
1242 | } | |
1243 | ||
07bc277f | 1244 | if (RX_EXTFLAGS(rx) & RXf_TAINTED) |
e08e52cf | 1245 | SvTAINTED_on(rv); |
c8c13c22 JB |
1246 | XPUSHs(rv); |
1247 | RETURN; | |
8782bef2 GB |
1248 | } |
1249 | ||
a0d0e21e LW |
1250 | PP(pp_match) |
1251 | { | |
97aff369 | 1252 | dVAR; dSP; dTARG; |
a0d0e21e | 1253 | register PMOP *pm = cPMOP; |
d65afb4b | 1254 | PMOP *dynpm = pm; |
0d46e09a SP |
1255 | register const char *t; |
1256 | register const char *s; | |
5c144d81 | 1257 | const char *strend; |
a0d0e21e | 1258 | I32 global; |
1ed74d04 | 1259 | U8 r_flags = REXEC_CHECKED; |
5c144d81 | 1260 | const char *truebase; /* Start of string */ |
aaa362c4 | 1261 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1262 | bool rxtainted; |
a3b680e6 | 1263 | const I32 gimme = GIMME; |
a0d0e21e | 1264 | STRLEN len; |
748a9306 | 1265 | I32 minmatch = 0; |
a3b680e6 | 1266 | const I32 oldsave = PL_savestack_ix; |
f86702cc | 1267 | I32 update_minmatch = 1; |
e60df1fa | 1268 | I32 had_zerolen = 0; |
58e23c8d | 1269 | U32 gpos = 0; |
a0d0e21e | 1270 | |
533c011a | 1271 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1272 | TARG = POPs; |
59f00321 RGS |
1273 | else if (PL_op->op_private & OPpTARGET_MY) |
1274 | GETTARGET; | |
a0d0e21e | 1275 | else { |
54b9620d | 1276 | TARG = DEFSV; |
a0d0e21e LW |
1277 | EXTEND(SP,1); |
1278 | } | |
d9f424b2 | 1279 | |
c277df42 | 1280 | PUTBACK; /* EVAL blocks need stack_sp. */ |
69dc4b30 FC |
1281 | /* Skip get-magic if this is a qr// clone, because regcomp has |
1282 | already done it. */ | |
1283 | s = ((struct regexp *)SvANY(rx))->mother_re | |
1284 | ? SvPV_nomg_const(TARG, len) | |
1285 | : SvPV_const(TARG, len); | |
a0d0e21e | 1286 | if (!s) |
2269b42e | 1287 | DIE(aTHX_ "panic: pp_match"); |
890ce7af | 1288 | strend = s + len; |
07bc277f | 1289 | rxtainted = ((RX_EXTFLAGS(rx) & RXf_TAINTED) || |
3280af22 | 1290 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 1291 | TAINT_NOT; |
a0d0e21e | 1292 | |
a30b2f1f | 1293 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 1294 | |
d65afb4b | 1295 | /* PMdf_USED is set after a ?? matches once */ |
c737faaf YO |
1296 | if ( |
1297 | #ifdef USE_ITHREADS | |
1298 | SvREADONLY(PL_regex_pad[pm->op_pmoffset]) | |
1299 | #else | |
1300 | pm->op_pmflags & PMf_USED | |
1301 | #endif | |
1302 | ) { | |
c277df42 | 1303 | failure: |
a0d0e21e LW |
1304 | if (gimme == G_ARRAY) |
1305 | RETURN; | |
1306 | RETPUSHNO; | |
1307 | } | |
1308 | ||
c737faaf YO |
1309 | |
1310 | ||
d65afb4b | 1311 | /* empty pattern special-cased to use last successful pattern if possible */ |
220fc49f | 1312 | if (!RX_PRELEN(rx) && PL_curpm) { |
3280af22 | 1313 | pm = PL_curpm; |
aaa362c4 | 1314 | rx = PM_GETRE(pm); |
a0d0e21e | 1315 | } |
d65afb4b | 1316 | |
07bc277f | 1317 | if (RX_MINLEN(rx) > (I32)len) |
d65afb4b | 1318 | goto failure; |
c277df42 | 1319 | |
a0d0e21e | 1320 | truebase = t = s; |
ad94a511 IZ |
1321 | |
1322 | /* XXXX What part of this is needed with true \G-support? */ | |
d65afb4b | 1323 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
07bc277f | 1324 | RX_OFFS(rx)[0].start = -1; |
a0d0e21e | 1325 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
c445ea15 | 1326 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 | 1327 | if (mg && mg->mg_len >= 0) { |
07bc277f NC |
1328 | if (!(RX_EXTFLAGS(rx) & RXf_GPOS_SEEN)) |
1329 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; | |
1330 | else if (RX_EXTFLAGS(rx) & RXf_ANCH_GPOS) { | |
0ef3e39e | 1331 | r_flags |= REXEC_IGNOREPOS; |
07bc277f NC |
1332 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; |
1333 | } else if (RX_EXTFLAGS(rx) & RXf_GPOS_FLOAT) | |
58e23c8d YO |
1334 | gpos = mg->mg_len; |
1335 | else | |
07bc277f NC |
1336 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; |
1337 | minmatch = (mg->mg_flags & MGf_MINMATCH) ? RX_GOFS(rx) + 1 : 0; | |
f86702cc | 1338 | update_minmatch = 0; |
748a9306 | 1339 | } |
a0d0e21e LW |
1340 | } |
1341 | } | |
a229a030 | 1342 | /* XXX: comment out !global get safe $1 vars after a |
62e7980d | 1343 | match, BUT be aware that this leads to dramatic slowdowns on |
a229a030 YO |
1344 | /g matches against large strings. So far a solution to this problem |
1345 | appears to be quite tricky. | |
1346 | Test for the unsafe vars are TODO for now. */ | |
07bc277f | 1347 | if (( !global && RX_NPARENS(rx)) |
cde0cee5 | 1348 | || SvTEMP(TARG) || PL_sawampersand || |
07bc277f | 1349 | (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY))) |
14977893 | 1350 | r_flags |= REXEC_COPY_STR; |
1c846c1f | 1351 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
1352 | r_flags |= REXEC_SCREAM; |
1353 | ||
a0d0e21e | 1354 | play_it_again: |
07bc277f NC |
1355 | if (global && RX_OFFS(rx)[0].start != -1) { |
1356 | t = s = RX_OFFS(rx)[0].end + truebase - RX_GOFS(rx); | |
1357 | if ((s + RX_MINLEN(rx)) > strend || s < truebase) | |
a0d0e21e | 1358 | goto nope; |
f86702cc | 1359 | if (update_minmatch++) |
e60df1fa | 1360 | minmatch = had_zerolen; |
a0d0e21e | 1361 | } |
07bc277f | 1362 | if (RX_EXTFLAGS(rx) & RXf_USE_INTUIT && |
3c8556c3 | 1363 | DO_UTF8(TARG) == (RX_UTF8(rx) != 0)) { |
5c144d81 NC |
1364 | /* FIXME - can PL_bostr be made const char *? */ |
1365 | PL_bostr = (char *)truebase; | |
f9f4320a | 1366 | s = CALLREG_INTUIT_START(rx, TARG, (char *)s, (char *)strend, r_flags, NULL); |
f722798b IZ |
1367 | |
1368 | if (!s) | |
1369 | goto nope; | |
07bc277f | 1370 | if ( (RX_EXTFLAGS(rx) & RXf_CHECK_ALL) |
14977893 | 1371 | && !PL_sawampersand |
07bc277f NC |
1372 | && !(RX_EXTFLAGS(rx) & RXf_PMf_KEEPCOPY) |
1373 | && ((RX_EXTFLAGS(rx) & RXf_NOSCAN) | |
1374 | || !((RX_EXTFLAGS(rx) & RXf_INTUIT_TAIL) | |
05b4157f GS |
1375 | && (r_flags & REXEC_SCREAM))) |
1376 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
f722798b | 1377 | goto yup; |
a0d0e21e | 1378 | } |
1f36f092 RB |
1379 | if (CALLREGEXEC(rx, (char*)s, (char *)strend, (char*)truebase, |
1380 | minmatch, TARG, NUM2PTR(void*, gpos), r_flags)) | |
bbce6d69 | 1381 | { |
3280af22 | 1382 | PL_curpm = pm; |
c737faaf YO |
1383 | if (dynpm->op_pmflags & PMf_ONCE) { |
1384 | #ifdef USE_ITHREADS | |
1385 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); | |
1386 | #else | |
1387 | dynpm->op_pmflags |= PMf_USED; | |
1388 | #endif | |
1389 | } | |
a0d0e21e LW |
1390 | goto gotcha; |
1391 | } | |
1392 | else | |
1393 | goto ret_no; | |
1394 | /*NOTREACHED*/ | |
1395 | ||
1396 | gotcha: | |
72311751 GS |
1397 | if (rxtainted) |
1398 | RX_MATCH_TAINTED_on(rx); | |
1399 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1400 | if (gimme == G_ARRAY) { |
07bc277f | 1401 | const I32 nparens = RX_NPARENS(rx); |
a3b680e6 | 1402 | I32 i = (global && !nparens) ? 1 : 0; |
a0d0e21e | 1403 | |
c277df42 | 1404 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1405 | EXTEND(SP, nparens + i); |
1406 | EXTEND_MORTAL(nparens + i); | |
1407 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e | 1408 | PUSHs(sv_newmortal()); |
07bc277f NC |
1409 | if ((RX_OFFS(rx)[i].start != -1) && RX_OFFS(rx)[i].end != -1 ) { |
1410 | const I32 len = RX_OFFS(rx)[i].end - RX_OFFS(rx)[i].start; | |
1411 | s = RX_OFFS(rx)[i].start + truebase; | |
1412 | if (RX_OFFS(rx)[i].end < 0 || RX_OFFS(rx)[i].start < 0 || | |
290deeac A |
1413 | len < 0 || len > strend - s) |
1414 | DIE(aTHX_ "panic: pp_match start/end pointers"); | |
a0d0e21e | 1415 | sv_setpvn(*SP, s, len); |
cce850e4 | 1416 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1417 | SvUTF8_on(*SP); |
a0d0e21e LW |
1418 | } |
1419 | } | |
1420 | if (global) { | |
d65afb4b | 1421 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
6136c704 | 1422 | MAGIC* mg = NULL; |
0af80b60 HS |
1423 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
1424 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1425 | if (!mg) { | |
d83f0a82 NC |
1426 | #ifdef PERL_OLD_COPY_ON_WRITE |
1427 | if (SvIsCOW(TARG)) | |
1428 | sv_force_normal_flags(TARG, 0); | |
1429 | #endif | |
1430 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1431 | &PL_vtbl_mglob, NULL, 0); | |
0af80b60 | 1432 | } |
07bc277f NC |
1433 | if (RX_OFFS(rx)[0].start != -1) { |
1434 | mg->mg_len = RX_OFFS(rx)[0].end; | |
1435 | if (RX_OFFS(rx)[0].start + RX_GOFS(rx) == (UV)RX_OFFS(rx)[0].end) | |
0af80b60 HS |
1436 | mg->mg_flags |= MGf_MINMATCH; |
1437 | else | |
1438 | mg->mg_flags &= ~MGf_MINMATCH; | |
1439 | } | |
1440 | } | |
07bc277f NC |
1441 | had_zerolen = (RX_OFFS(rx)[0].start != -1 |
1442 | && (RX_OFFS(rx)[0].start + RX_GOFS(rx) | |
1443 | == (UV)RX_OFFS(rx)[0].end)); | |
c277df42 | 1444 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1445 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1446 | goto play_it_again; |
1447 | } | |
ffc61ed2 | 1448 | else if (!nparens) |
bde848c5 | 1449 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1450 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1451 | RETURN; |
1452 | } | |
1453 | else { | |
1454 | if (global) { | |
cbbf8932 | 1455 | MAGIC* mg; |
a0d0e21e | 1456 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
14befaf4 | 1457 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
cbbf8932 AL |
1458 | else |
1459 | mg = NULL; | |
a0d0e21e | 1460 | if (!mg) { |
d83f0a82 NC |
1461 | #ifdef PERL_OLD_COPY_ON_WRITE |
1462 | if (SvIsCOW(TARG)) | |
1463 | sv_force_normal_flags(TARG, 0); | |
1464 | #endif | |
1465 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1466 | &PL_vtbl_mglob, NULL, 0); | |
a0d0e21e | 1467 | } |
07bc277f NC |
1468 | if (RX_OFFS(rx)[0].start != -1) { |
1469 | mg->mg_len = RX_OFFS(rx)[0].end; | |
1470 | if (RX_OFFS(rx)[0].start + RX_GOFS(rx) == (UV)RX_OFFS(rx)[0].end) | |
748a9306 LW |
1471 | mg->mg_flags |= MGf_MINMATCH; |
1472 | else | |
1473 | mg->mg_flags &= ~MGf_MINMATCH; | |
1474 | } | |
a0d0e21e | 1475 | } |
4633a7c4 | 1476 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1477 | RETPUSHYES; |
1478 | } | |
1479 | ||
f722798b | 1480 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1481 | if (rxtainted) |
1482 | RX_MATCH_TAINTED_on(rx); | |
1483 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1484 | PL_curpm = pm; |
c737faaf YO |
1485 | if (dynpm->op_pmflags & PMf_ONCE) { |
1486 | #ifdef USE_ITHREADS | |
1487 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); | |
1488 | #else | |
1489 | dynpm->op_pmflags |= PMf_USED; | |
1490 | #endif | |
1491 | } | |
cf93c79d | 1492 | if (RX_MATCH_COPIED(rx)) |
07bc277f | 1493 | Safefree(RX_SUBBEG(rx)); |
cf93c79d | 1494 | RX_MATCH_COPIED_off(rx); |
07bc277f | 1495 | RX_SUBBEG(rx) = NULL; |
a0d0e21e | 1496 | if (global) { |
5c144d81 | 1497 | /* FIXME - should rx->subbeg be const char *? */ |
07bc277f NC |
1498 | RX_SUBBEG(rx) = (char *) truebase; |
1499 | RX_OFFS(rx)[0].start = s - truebase; | |
a30b2f1f | 1500 | if (RX_MATCH_UTF8(rx)) { |
07bc277f NC |
1501 | char * const t = (char*)utf8_hop((U8*)s, RX_MINLENRET(rx)); |
1502 | RX_OFFS(rx)[0].end = t - truebase; | |
60aeb6fd NIS |
1503 | } |
1504 | else { | |
07bc277f | 1505 | RX_OFFS(rx)[0].end = s - truebase + RX_MINLENRET(rx); |
60aeb6fd | 1506 | } |
07bc277f | 1507 | RX_SUBLEN(rx) = strend - truebase; |
a0d0e21e | 1508 | goto gotcha; |
1c846c1f | 1509 | } |
07bc277f | 1510 | if (PL_sawampersand || RX_EXTFLAGS(rx) & RXf_PMf_KEEPCOPY) { |
14977893 | 1511 | I32 off; |
f8c7b90f | 1512 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
1513 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
1514 | if (DEBUG_C_TEST) { | |
1515 | PerlIO_printf(Perl_debug_log, | |
1516 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", | |
6c9570dc | 1517 | (int) SvTYPE(TARG), (void*)truebase, (void*)t, |
ed252734 NC |
1518 | (int)(t-truebase)); |
1519 | } | |
bdd9a1b1 NC |
1520 | RX_SAVED_COPY(rx) = sv_setsv_cow(RX_SAVED_COPY(rx), TARG); |
1521 | RX_SUBBEG(rx) | |
1522 | = (char *) SvPVX_const(RX_SAVED_COPY(rx)) + (t - truebase); | |
1523 | assert (SvPOKp(RX_SAVED_COPY(rx))); | |
ed252734 NC |
1524 | } else |
1525 | #endif | |
1526 | { | |
14977893 | 1527 | |
07bc277f | 1528 | RX_SUBBEG(rx) = savepvn(t, strend - t); |
f8c7b90f | 1529 | #ifdef PERL_OLD_COPY_ON_WRITE |
bdd9a1b1 | 1530 | RX_SAVED_COPY(rx) = NULL; |
ed252734 NC |
1531 | #endif |
1532 | } | |
07bc277f | 1533 | RX_SUBLEN(rx) = strend - t; |
14977893 | 1534 | RX_MATCH_COPIED_on(rx); |
07bc277f NC |
1535 | off = RX_OFFS(rx)[0].start = s - t; |
1536 | RX_OFFS(rx)[0].end = off + RX_MINLENRET(rx); | |
14977893 JH |
1537 | } |
1538 | else { /* startp/endp are used by @- @+. */ | |
07bc277f NC |
1539 | RX_OFFS(rx)[0].start = s - truebase; |
1540 | RX_OFFS(rx)[0].end = s - truebase + RX_MINLENRET(rx); | |
14977893 | 1541 | } |
07bc277f | 1542 | /* including RX_NPARENS(rx) in the below code seems highly suspicious. |
cde0cee5 | 1543 | -dmq */ |
07bc277f | 1544 | RX_NPARENS(rx) = RX_LASTPAREN(rx) = RX_LASTCLOSEPAREN(rx) = 0; /* used by @-, @+, and $^N */ |
4633a7c4 | 1545 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1546 | RETPUSHYES; |
1547 | ||
1548 | nope: | |
a0d0e21e | 1549 | ret_no: |
d65afb4b | 1550 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e | 1551 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
6136c704 | 1552 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1553 | if (mg) |
565764a8 | 1554 | mg->mg_len = -1; |
a0d0e21e LW |
1555 | } |
1556 | } | |
4633a7c4 | 1557 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1558 | if (gimme == G_ARRAY) |
1559 | RETURN; | |
1560 | RETPUSHNO; | |
1561 | } | |
1562 | ||
1563 | OP * | |
864dbfa3 | 1564 | Perl_do_readline(pTHX) |
a0d0e21e | 1565 | { |
27da23d5 | 1566 | dVAR; dSP; dTARGETSTACKED; |
a0d0e21e LW |
1567 | register SV *sv; |
1568 | STRLEN tmplen = 0; | |
1569 | STRLEN offset; | |
760ac839 | 1570 | PerlIO *fp; |
a3b680e6 AL |
1571 | register IO * const io = GvIO(PL_last_in_gv); |
1572 | register const I32 type = PL_op->op_type; | |
1573 | const I32 gimme = GIMME_V; | |
a0d0e21e | 1574 | |
6136c704 | 1575 | if (io) { |
ad64d0ec | 1576 | MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar); |
6136c704 AL |
1577 | if (mg) { |
1578 | PUSHMARK(SP); | |
ad64d0ec | 1579 | XPUSHs(SvTIED_obj(MUTABLE_SV(io), mg)); |
6136c704 | 1580 | PUTBACK; |
d343c3ef | 1581 | ENTER_with_name("call_READLINE"); |
6136c704 | 1582 | call_method("READLINE", gimme); |
d343c3ef | 1583 | LEAVE_with_name("call_READLINE"); |
6136c704 AL |
1584 | SPAGAIN; |
1585 | if (gimme == G_SCALAR) { | |
1586 | SV* const result = POPs; | |
1587 | SvSetSV_nosteal(TARG, result); | |
1588 | PUSHTARG; | |
1589 | } | |
1590 | RETURN; | |
0b7c7b4f | 1591 | } |
e79b0511 | 1592 | } |
4608196e | 1593 | fp = NULL; |
a0d0e21e LW |
1594 | if (io) { |
1595 | fp = IoIFP(io); | |
1596 | if (!fp) { | |
1597 | if (IoFLAGS(io) & IOf_ARGV) { | |
1598 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1599 | IoLINES(io) = 0; |
3280af22 | 1600 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1601 | IoFLAGS(io) &= ~IOf_START; |
4608196e | 1602 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,NULL); |
76f68e9b | 1603 | sv_setpvs(GvSVn(PL_last_in_gv), "-"); |
3280af22 | 1604 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d GS |
1605 | fp = IoIFP(io); |
1606 | goto have_fp; | |
a0d0e21e LW |
1607 | } |
1608 | } | |
3280af22 | 1609 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1610 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1611 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1612 | } |
1613 | } | |
0d44d22b NC |
1614 | else if (type == OP_GLOB) |
1615 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1616 | } |
1617 | else if (type == OP_GLOB) | |
1618 | SP--; | |
a00b5bd3 | 1619 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 | 1620 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 | 1621 | } |
a0d0e21e LW |
1622 | } |
1623 | if (!fp) { | |
041457d9 DM |
1624 | if ((!io || !(IoFLAGS(io) & IOf_START)) |
1625 | && ckWARN2(WARN_GLOB, WARN_CLOSED)) | |
1626 | { | |
3f4520fe | 1627 | if (type == OP_GLOB) |
9014280d | 1628 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a GS |
1629 | "glob failed (can't start child: %s)", |
1630 | Strerror(errno)); | |
69282e91 | 1631 | else |
bc37a18f | 1632 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe | 1633 | } |
54310121 | 1634 | if (gimme == G_SCALAR) { |
79628082 | 1635 | /* undef TARG, and push that undefined value */ |
ba92458f AE |
1636 | if (type != OP_RCATLINE) { |
1637 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1638 | SvOK_off(TARG); |
ba92458f | 1639 | } |
a0d0e21e LW |
1640 | PUSHTARG; |
1641 | } | |
1642 | RETURN; | |
1643 | } | |
a2008d6d | 1644 | have_fp: |
54310121 | 1645 | if (gimme == G_SCALAR) { |
a0d0e21e | 1646 | sv = TARG; |
0f722b55 RGS |
1647 | if (type == OP_RCATLINE && SvGMAGICAL(sv)) |
1648 | mg_get(sv); | |
48de12d9 RGS |
1649 | if (SvROK(sv)) { |
1650 | if (type == OP_RCATLINE) | |
1651 | SvPV_force_nolen(sv); | |
1652 | else | |
1653 | sv_unref(sv); | |
1654 | } | |
f7877b28 NC |
1655 | else if (isGV_with_GP(sv)) { |
1656 | SvPV_force_nolen(sv); | |
1657 | } | |
862a34c6 | 1658 | SvUPGRADE(sv, SVt_PV); |
a0d0e21e | 1659 | tmplen = SvLEN(sv); /* remember if already alloced */ |
bc44a8a2 | 1660 | if (!tmplen && !SvREADONLY(sv)) |
a0d0e21e | 1661 | Sv_Grow(sv, 80); /* try short-buffering it */ |
2b5e58c4 AMS |
1662 | offset = 0; |
1663 | if (type == OP_RCATLINE && SvOK(sv)) { | |
1664 | if (!SvPOK(sv)) { | |
8b6b16e7 | 1665 | SvPV_force_nolen(sv); |
2b5e58c4 | 1666 | } |
a0d0e21e | 1667 | offset = SvCUR(sv); |
2b5e58c4 | 1668 | } |
a0d0e21e | 1669 | } |
54310121 | 1670 | else { |
561b68a9 | 1671 | sv = sv_2mortal(newSV(80)); |
54310121 | 1672 | offset = 0; |
1673 | } | |
fbad3eb5 | 1674 | |
3887d568 AP |
1675 | /* This should not be marked tainted if the fp is marked clean */ |
1676 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1677 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1678 | TAINT; \ | |
1679 | SvTAINTED_on(sv); \ | |
1680 | } | |
1681 | ||
684bef36 | 1682 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1683 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1684 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1685 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1686 | |
a0d0e21e | 1687 | for (;;) { |
09e8efcc | 1688 | PUTBACK; |
fbad3eb5 | 1689 | if (!sv_gets(sv, fp, offset) |
2d726892 TF |
1690 | && (type == OP_GLOB |
1691 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
1692 | || PerlIO_error(fp))) | |
fbad3eb5 | 1693 | { |
760ac839 | 1694 | PerlIO_clearerr(fp); |
a0d0e21e | 1695 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1696 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1697 | if (fp) |
1698 | continue; | |
3280af22 | 1699 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1700 | } |
1701 | else if (type == OP_GLOB) { | |
a2a5de95 NC |
1702 | if (!do_close(PL_last_in_gv, FALSE)) { |
1703 | Perl_ck_warner(aTHX_ packWARN(WARN_GLOB), | |
1704 | "glob failed (child exited with status %d%s)", | |
1705 | (int)(STATUS_CURRENT >> 8), | |
1706 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); | |
4eb79ab5 | 1707 | } |
a0d0e21e | 1708 | } |
54310121 | 1709 | if (gimme == G_SCALAR) { |
ba92458f AE |
1710 | if (type != OP_RCATLINE) { |
1711 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1712 | SvOK_off(TARG); |
ba92458f | 1713 | } |
09e8efcc | 1714 | SPAGAIN; |
a0d0e21e LW |
1715 | PUSHTARG; |
1716 | } | |
3887d568 | 1717 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1718 | RETURN; |
1719 | } | |
3887d568 | 1720 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1721 | IoLINES(io)++; |
b9fee9ba | 1722 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1723 | SvSETMAGIC(sv); |
09e8efcc | 1724 | SPAGAIN; |
a0d0e21e | 1725 | XPUSHs(sv); |
a0d0e21e | 1726 | if (type == OP_GLOB) { |
349d4f2f | 1727 | const char *t1; |
a0d0e21e | 1728 | |
3280af22 | 1729 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
6136c704 | 1730 | char * const tmps = SvEND(sv) - 1; |
aa07b2f6 | 1731 | if (*tmps == *SvPVX_const(PL_rs)) { |
c07a80fd | 1732 | *tmps = '\0'; |
b162af07 | 1733 | SvCUR_set(sv, SvCUR(sv) - 1); |
c07a80fd | 1734 | } |
1735 | } | |
349d4f2f NC |
1736 | for (t1 = SvPVX_const(sv); *t1; t1++) |
1737 | if (!isALPHA(*t1) && !isDIGIT(*t1) && | |
1738 | strchr("$&*(){}[]'\";\\|?<>~`", *t1)) | |
a0d0e21e | 1739 | break; |
349d4f2f | 1740 | if (*t1 && PerlLIO_lstat(SvPVX_const(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1741 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1742 | continue; | |
1743 | } | |
2d79bf7f | 1744 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
d4c19fe8 AL |
1745 | if (ckWARN(WARN_UTF8)) { |
1746 | const U8 * const s = (const U8*)SvPVX_const(sv) + offset; | |
1747 | const STRLEN len = SvCUR(sv) - offset; | |
1748 | const U8 *f; | |
1749 | ||
1750 | if (!is_utf8_string_loc(s, len, &f)) | |
1751 | /* Emulate :encoding(utf8) warning in the same case. */ | |
1752 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
1753 | "utf8 \"\\x%02X\" does not map to Unicode", | |
1754 | f < (U8*)SvEND(sv) ? *f : 0); | |
1755 | } | |
a0d0e21e | 1756 | } |
54310121 | 1757 | if (gimme == G_ARRAY) { |
a0d0e21e | 1758 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1da4ca5f | 1759 | SvPV_shrink_to_cur(sv); |
a0d0e21e | 1760 | } |
561b68a9 | 1761 | sv = sv_2mortal(newSV(80)); |
a0d0e21e LW |
1762 | continue; |
1763 | } | |
54310121 | 1764 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e | 1765 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
d5b5861b NC |
1766 | const STRLEN new_len |
1767 | = SvCUR(sv) < 60 ? 80 : SvCUR(sv)+40; /* allow some slop */ | |
1da4ca5f | 1768 | SvPV_renew(sv, new_len); |
a0d0e21e LW |
1769 | } |
1770 | RETURN; | |
1771 | } | |
1772 | } | |
1773 | ||
1774 | PP(pp_enter) | |
1775 | { | |
27da23d5 | 1776 | dVAR; dSP; |
c09156bb | 1777 | register PERL_CONTEXT *cx; |
533c011a | 1778 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e | 1779 | |
54310121 | 1780 | if (gimme == -1) { |
e91684bf VP |
1781 | if (cxstack_ix >= 0) { |
1782 | /* If this flag is set, we're just inside a return, so we should | |
1783 | * store the caller's context */ | |
1784 | gimme = (PL_op->op_flags & OPf_SPECIAL) | |
1785 | ? block_gimme() | |
1786 | : cxstack[cxstack_ix].blk_gimme; | |
1787 | } else | |
54310121 | 1788 | gimme = G_SCALAR; |
1789 | } | |
a0d0e21e | 1790 | |
d343c3ef | 1791 | ENTER_with_name("block"); |
a0d0e21e LW |
1792 | |
1793 | SAVETMPS; | |
924508f0 | 1794 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
1795 | |
1796 | RETURN; | |
1797 | } | |
1798 | ||
1799 | PP(pp_helem) | |
1800 | { | |
97aff369 | 1801 | dVAR; dSP; |
760ac839 | 1802 | HE* he; |
ae77835f | 1803 | SV **svp; |
c445ea15 | 1804 | SV * const keysv = POPs; |
85fbaab2 | 1805 | HV * const hv = MUTABLE_HV(POPs); |
a3b680e6 AL |
1806 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
1807 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
be6c24e0 | 1808 | SV *sv; |
c158a4fd | 1809 | const U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvSHARED_HASH(keysv) : 0; |
92970b93 | 1810 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
d30e492c | 1811 | bool preeminent = TRUE; |
a0d0e21e | 1812 | |
d4c19fe8 | 1813 | if (SvTYPE(hv) != SVt_PVHV) |
a0d0e21e | 1814 | RETPUSHUNDEF; |
d4c19fe8 | 1815 | |
92970b93 | 1816 | if (localizing) { |
d4c19fe8 AL |
1817 | MAGIC *mg; |
1818 | HV *stash; | |
d30e492c VP |
1819 | |
1820 | /* If we can determine whether the element exist, | |
1821 | * Try to preserve the existenceness of a tied hash | |
1822 | * element by using EXISTS and DELETE if possible. | |
1823 | * Fallback to FETCH and STORE otherwise. */ | |
1824 | if (SvCANEXISTDELETE(hv) || mg_find((const SV *)hv, PERL_MAGIC_env)) | |
1825 | preeminent = hv_exists_ent(hv, keysv, 0); | |
d4c19fe8 | 1826 | } |
d30e492c | 1827 | |
d4c19fe8 AL |
1828 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
1829 | svp = he ? &HeVAL(he) : NULL; | |
a0d0e21e | 1830 | if (lval) { |
3280af22 | 1831 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 1832 | SV* lv; |
1833 | SV* key2; | |
2d8e6c8d | 1834 | if (!defer) { |
be2597df | 1835 | DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv)); |
2d8e6c8d | 1836 | } |
68dc0745 | 1837 | lv = sv_newmortal(); |
1838 | sv_upgrade(lv, SVt_PVLV); | |
1839 | LvTYPE(lv) = 'y'; | |
6136c704 | 1840 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, NULL, 0); |
68dc0745 | 1841 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
b37c2d43 | 1842 | LvTARG(lv) = SvREFCNT_inc_simple(hv); |
68dc0745 | 1843 | LvTARGLEN(lv) = 1; |
1844 | PUSHs(lv); | |
1845 | RETURN; | |
1846 | } | |
92970b93 | 1847 | if (localizing) { |
bfcb3514 | 1848 | if (HvNAME_get(hv) && isGV(*svp)) |
159b6efe | 1849 | save_gp(MUTABLE_GV(*svp), !(PL_op->op_flags & OPf_SPECIAL)); |
47cfc530 VP |
1850 | else if (preeminent) |
1851 | save_helem_flags(hv, keysv, svp, | |
1852 | (PL_op->op_flags & OPf_SPECIAL) ? 0 : SAVEf_SETMAGIC); | |
1853 | else | |
1854 | SAVEHDELETE(hv, keysv); | |
5f05dabc | 1855 | } |
533c011a NIS |
1856 | else if (PL_op->op_private & OPpDEREF) |
1857 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 1858 | } |
3280af22 | 1859 | sv = (svp ? *svp : &PL_sv_undef); |
fd69380d DM |
1860 | /* Originally this did a conditional C<sv = sv_mortalcopy(sv)>; this |
1861 | * was to make C<local $tied{foo} = $tied{foo}> possible. | |
1862 | * However, it seems no longer to be needed for that purpose, and | |
1863 | * introduced a new bug: stuff like C<while ($hash{taintedval} =~ /.../g> | |
1864 | * would loop endlessly since the pos magic is getting set on the | |
1865 | * mortal copy and lost. However, the copy has the effect of | |
1866 | * triggering the get magic, and losing it altogether made things like | |
1867 | * c<$tied{foo};> in void context no longer do get magic, which some | |
1868 | * code relied on. Also, delayed triggering of magic on @+ and friends | |
1869 | * meant the original regex may be out of scope by now. So as a | |
1870 | * compromise, do the get magic here. (The MGf_GSKIP flag will stop it | |
1871 | * being called too many times). */ | |
39cf747a | 1872 | if (!lval && SvRMAGICAL(hv) && SvGMAGICAL(sv)) |
fd69380d | 1873 | mg_get(sv); |
be6c24e0 | 1874 | PUSHs(sv); |
a0d0e21e LW |
1875 | RETURN; |
1876 | } | |
1877 | ||
1878 | PP(pp_leave) | |
1879 | { | |
27da23d5 | 1880 | dVAR; dSP; |
c09156bb | 1881 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
1882 | SV **newsp; |
1883 | PMOP *newpm; | |
1884 | I32 gimme; | |
1885 | ||
533c011a | 1886 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1887 | cx = &cxstack[cxstack_ix]; |
3280af22 | 1888 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e LW |
1889 | } |
1890 | ||
1891 | POPBLOCK(cx,newpm); | |
1892 | ||
e91684bf | 1893 | gimme = OP_GIMME(PL_op, (cxstack_ix >= 0) ? gimme : G_SCALAR); |
a0d0e21e | 1894 | |
a1f49e72 | 1895 | TAINT_NOT; |
54310121 | 1896 | if (gimme == G_VOID) |
1897 | SP = newsp; | |
1898 | else if (gimme == G_SCALAR) { | |
a3b680e6 | 1899 | register SV **mark; |
54310121 | 1900 | MARK = newsp + 1; |
09256e2f | 1901 | if (MARK <= SP) { |
54310121 | 1902 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1903 | *MARK = TOPs; | |
1904 | else | |
1905 | *MARK = sv_mortalcopy(TOPs); | |
09256e2f | 1906 | } else { |
54310121 | 1907 | MEXTEND(mark,0); |
3280af22 | 1908 | *MARK = &PL_sv_undef; |
a0d0e21e | 1909 | } |
54310121 | 1910 | SP = MARK; |
a0d0e21e | 1911 | } |
54310121 | 1912 | else if (gimme == G_ARRAY) { |
a1f49e72 | 1913 | /* in case LEAVE wipes old return values */ |
a3b680e6 | 1914 | register SV **mark; |
a1f49e72 CS |
1915 | for (mark = newsp + 1; mark <= SP; mark++) { |
1916 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
a0d0e21e | 1917 | *mark = sv_mortalcopy(*mark); |
a1f49e72 CS |
1918 | TAINT_NOT; /* Each item is independent */ |
1919 | } | |
1920 | } | |
a0d0e21e | 1921 | } |
3280af22 | 1922 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e | 1923 | |
d343c3ef | 1924 | LEAVE_with_name("block"); |
a0d0e21e LW |
1925 | |
1926 | RETURN; | |
1927 | } | |
1928 | ||
1929 | PP(pp_iter) | |
1930 | { | |
97aff369 | 1931 | dVAR; dSP; |
c09156bb | 1932 | register PERL_CONTEXT *cx; |
dc09a129 | 1933 | SV *sv, *oldsv; |
1d7c1841 | 1934 | SV **itersvp; |
d01136d6 BS |
1935 | AV *av = NULL; /* used for LOOP_FOR on arrays and the stack */ |
1936 | bool av_is_stack = FALSE; | |
a0d0e21e | 1937 | |
924508f0 | 1938 | EXTEND(SP, 1); |
a0d0e21e | 1939 | cx = &cxstack[cxstack_ix]; |
3b719c58 | 1940 | if (!CxTYPE_is_LOOP(cx)) |
cea2e8a9 | 1941 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1942 | |
1d7c1841 | 1943 | itersvp = CxITERVAR(cx); |
d01136d6 | 1944 | if (CxTYPE(cx) == CXt_LOOP_LAZYSV) { |
89ea2908 | 1945 | /* string increment */ |
d01136d6 BS |
1946 | SV* cur = cx->blk_loop.state_u.lazysv.cur; |
1947 | SV *end = cx->blk_loop.state_u.lazysv.end; | |
267cc4a8 NC |
1948 | /* If the maximum is !SvOK(), pp_enteriter substitutes PL_sv_no. |
1949 | It has SvPVX of "" and SvCUR of 0, which is what we want. */ | |
4fe3f0fa | 1950 | STRLEN maxlen = 0; |
d01136d6 | 1951 | const char *max = SvPV_const(end, maxlen); |
89ea2908 | 1952 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
1d7c1841 | 1953 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1954 | /* safe to reuse old SV */ |
1d7c1841 | 1955 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1956 | } |
1c846c1f | 1957 | else |
eaa5c2d6 GA |
1958 | { |
1959 | /* we need a fresh SV every time so that loop body sees a | |
1960 | * completely new SV for closures/references to work as | |
1961 | * they used to */ | |
dc09a129 | 1962 | oldsv = *itersvp; |
1d7c1841 | 1963 | *itersvp = newSVsv(cur); |
dc09a129 | 1964 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1965 | } |
aa07b2f6 | 1966 | if (strEQ(SvPVX_const(cur), max)) |
89ea2908 GA |
1967 | sv_setiv(cur, 0); /* terminate next time */ |
1968 | else | |
1969 | sv_inc(cur); | |
1970 | RETPUSHYES; | |
1971 | } | |
1972 | RETPUSHNO; | |
d01136d6 BS |
1973 | } |
1974 | else if (CxTYPE(cx) == CXt_LOOP_LAZYIV) { | |
89ea2908 | 1975 | /* integer increment */ |
d01136d6 | 1976 | if (cx->blk_loop.state_u.lazyiv.cur > cx->blk_loop.state_u.lazyiv.end) |
89ea2908 | 1977 | RETPUSHNO; |
7f61b687 | 1978 | |
3db8f154 | 1979 | /* don't risk potential race */ |
1d7c1841 | 1980 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1981 | /* safe to reuse old SV */ |
d01136d6 | 1982 | sv_setiv(*itersvp, cx->blk_loop.state_u.lazyiv.cur++); |
eaa5c2d6 | 1983 | } |
1c846c1f | 1984 | else |
eaa5c2d6 GA |
1985 | { |
1986 | /* we need a fresh SV every time so that loop body sees a | |
1987 | * completely new SV for closures/references to work as they | |
1988 | * used to */ | |
dc09a129 | 1989 | oldsv = *itersvp; |
d01136d6 | 1990 | *itersvp = newSViv(cx->blk_loop.state_u.lazyiv.cur++); |
dc09a129 | 1991 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1992 | } |
a2309040 JH |
1993 | |
1994 | /* Handle end of range at IV_MAX */ | |
d01136d6 BS |
1995 | if ((cx->blk_loop.state_u.lazyiv.cur == IV_MIN) && |
1996 | (cx->blk_loop.state_u.lazyiv.end == IV_MAX)) | |
a2309040 | 1997 | { |
d01136d6 BS |
1998 | cx->blk_loop.state_u.lazyiv.cur++; |
1999 | cx->blk_loop.state_u.lazyiv.end++; | |
a2309040 JH |
2000 | } |
2001 | ||
89ea2908 GA |
2002 | RETPUSHYES; |
2003 | } | |
2004 | ||
2005 | /* iterate array */ | |
d01136d6 BS |
2006 | assert(CxTYPE(cx) == CXt_LOOP_FOR); |
2007 | av = cx->blk_loop.state_u.ary.ary; | |
2008 | if (!av) { | |
2009 | av_is_stack = TRUE; | |
2010 | av = PL_curstack; | |
2011 | } | |
ef3e5ea9 | 2012 | if (PL_op->op_private & OPpITER_REVERSED) { |
d01136d6 BS |
2013 | if (cx->blk_loop.state_u.ary.ix <= (av_is_stack |
2014 | ? cx->blk_loop.resetsp + 1 : 0)) | |
ef3e5ea9 | 2015 | RETPUSHNO; |
a0d0e21e | 2016 | |
ef3e5ea9 | 2017 | if (SvMAGICAL(av) || AvREIFY(av)) { |
d01136d6 | 2018 | SV * const * const svp = av_fetch(av, --cx->blk_loop.state_u.ary.ix, FALSE); |
a0714e2c | 2019 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
2020 | } |
2021 | else { | |
d01136d6 | 2022 | sv = AvARRAY(av)[--cx->blk_loop.state_u.ary.ix]; |
ef3e5ea9 | 2023 | } |
d42935ef JH |
2024 | } |
2025 | else { | |
d01136d6 | 2026 | if (cx->blk_loop.state_u.ary.ix >= (av_is_stack ? cx->blk_oldsp : |
ef3e5ea9 NC |
2027 | AvFILL(av))) |
2028 | RETPUSHNO; | |
2029 | ||
2030 | if (SvMAGICAL(av) || AvREIFY(av)) { | |
d01136d6 | 2031 | SV * const * const svp = av_fetch(av, ++cx->blk_loop.state_u.ary.ix, FALSE); |
a0714e2c | 2032 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
2033 | } |
2034 | else { | |
d01136d6 | 2035 | sv = AvARRAY(av)[++cx->blk_loop.state_u.ary.ix]; |
ef3e5ea9 | 2036 | } |
d42935ef | 2037 | } |
ef3e5ea9 | 2038 | |
0565a181 | 2039 | if (sv && SvIS_FREED(sv)) { |
a0714e2c | 2040 | *itersvp = NULL; |
b6c83531 | 2041 | Perl_croak(aTHX_ "Use of freed value in iteration"); |
cccede53 DM |
2042 | } |
2043 | ||
d01136d6 | 2044 | if (sv) { |
a0d0e21e | 2045 | SvTEMP_off(sv); |
d01136d6 BS |
2046 | SvREFCNT_inc_simple_void_NN(sv); |
2047 | } | |
a0d0e21e | 2048 | else |
3280af22 | 2049 | sv = &PL_sv_undef; |
d01136d6 BS |
2050 | if (!av_is_stack && sv == &PL_sv_undef) { |
2051 | SV *lv = newSV_type(SVt_PVLV); | |
2052 | LvTYPE(lv) = 'y'; | |
2053 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); | |
b37c2d43 | 2054 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
d01136d6 | 2055 | LvTARGOFF(lv) = cx->blk_loop.state_u.ary.ix; |
42718184 | 2056 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
d01136d6 | 2057 | sv = lv; |
5f05dabc | 2058 | } |
a0d0e21e | 2059 | |
dc09a129 | 2060 | oldsv = *itersvp; |
d01136d6 | 2061 | *itersvp = sv; |
dc09a129 DM |
2062 | SvREFCNT_dec(oldsv); |
2063 | ||
a0d0e21e LW |
2064 | RETPUSHYES; |
2065 | } | |
2066 | ||
2067 | PP(pp_subst) | |
2068 | { | |
97aff369 | 2069 | dVAR; dSP; dTARG; |
a0d0e21e LW |
2070 | register PMOP *pm = cPMOP; |
2071 | PMOP *rpm = pm; | |
a0d0e21e LW |
2072 | register char *s; |
2073 | char *strend; | |
2074 | register char *m; | |
5c144d81 | 2075 | const char *c; |
a0d0e21e LW |
2076 | register char *d; |
2077 | STRLEN clen; | |
2078 | I32 iters = 0; | |
2079 | I32 maxiters; | |
2080 | register I32 i; | |
2081 | bool once; | |
99710fe3 | 2082 | U8 rxtainted; |
a0d0e21e | 2083 | char *orig; |
1ed74d04 | 2084 | U8 r_flags; |
aaa362c4 | 2085 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
2086 | STRLEN len; |
2087 | int force_on_match = 0; | |
0bcc34c2 | 2088 | const I32 oldsave = PL_savestack_ix; |
792b2c16 | 2089 | STRLEN slen; |
f272994b | 2090 | bool doutf8 = FALSE; |
10300be4 | 2091 | I32 matched; |
f8c7b90f | 2092 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2093 | bool is_cow; |
2094 | #endif | |
a0714e2c | 2095 | SV *nsv = NULL; |
b770e143 NC |
2096 | /* known replacement string? */ |
2097 | register SV *dstr = (pm->op_pmflags & PMf_CONST) ? POPs : NULL; | |
a0d0e21e | 2098 | |
f410a211 NC |
2099 | PERL_ASYNC_CHECK(); |
2100 | ||
533c011a | 2101 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 2102 | TARG = POPs; |
59f00321 RGS |
2103 | else if (PL_op->op_private & OPpTARGET_MY) |
2104 | GETTARGET; | |
a0d0e21e | 2105 | else { |
54b9620d | 2106 | TARG = DEFSV; |
a0d0e21e | 2107 | EXTEND(SP,1); |
1c846c1f | 2108 | } |
d9f424b2 | 2109 | |
f8c7b90f | 2110 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2111 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, |
2112 | because they make integers such as 256 "false". */ | |
2113 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
2114 | #else | |
765f542d NC |
2115 | if (SvIsCOW(TARG)) |
2116 | sv_force_normal_flags(TARG,0); | |
ed252734 NC |
2117 | #endif |
2118 | if ( | |
f8c7b90f | 2119 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2120 | !is_cow && |
2121 | #endif | |
2122 | (SvREADONLY(TARG) | |
cecf5685 NC |
2123 | || ( ((SvTYPE(TARG) == SVt_PVGV && isGV_with_GP(TARG)) |
2124 | || SvTYPE(TARG) > SVt_PVLV) | |
4ce457a6 | 2125 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) |
f1f66076 | 2126 | DIE(aTHX_ "%s", PL_no_modify); |
8ec5e241 NIS |
2127 | PUTBACK; |
2128 | ||
3e462cdc | 2129 | setup_match: |
d5263905 | 2130 | s = SvPV_mutable(TARG, len); |
68dc0745 | 2131 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 2132 | force_on_match = 1; |
07bc277f | 2133 | rxtainted = ((RX_EXTFLAGS(rx) & RXf_TAINTED) || |
3280af22 NIS |
2134 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
2135 | if (PL_tainted) | |
b3eb6a9b | 2136 | rxtainted |= 2; |
9212bbba | 2137 | TAINT_NOT; |
a12c0f56 | 2138 | |
a30b2f1f | 2139 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 2140 | |
a0d0e21e LW |
2141 | force_it: |
2142 | if (!pm || !s) | |
2269b42e | 2143 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
2144 | |
2145 | strend = s + len; | |
a30b2f1f | 2146 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
2147 | maxiters = 2 * slen + 10; /* We can match twice at each |
2148 | position, once with zero-length, | |
2149 | second time with non-zero. */ | |
a0d0e21e | 2150 | |
220fc49f | 2151 | if (!RX_PRELEN(rx) && PL_curpm) { |
3280af22 | 2152 | pm = PL_curpm; |
aaa362c4 | 2153 | rx = PM_GETRE(pm); |
a0d0e21e | 2154 | } |
07bc277f NC |
2155 | r_flags = (RX_NPARENS(rx) || SvTEMP(TARG) || PL_sawampersand |
2156 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY)) ) | |
ed252734 | 2157 | ? REXEC_COPY_STR : 0; |
f722798b | 2158 | if (SvSCREAM(TARG)) |
22e551b9 | 2159 | r_flags |= REXEC_SCREAM; |
7fba1cd6 | 2160 | |
a0d0e21e | 2161 | orig = m = s; |
07bc277f | 2162 | if (RX_EXTFLAGS(rx) & RXf_USE_INTUIT) { |
ee0b7718 | 2163 | PL_bostr = orig; |
f9f4320a | 2164 | s = CALLREG_INTUIT_START(rx, TARG, s, strend, r_flags, NULL); |
f722798b IZ |
2165 | |
2166 | if (!s) | |
2167 | goto nope; | |
2168 | /* How to do it in subst? */ | |
07bc277f | 2169 | /* if ( (RX_EXTFLAGS(rx) & RXf_CHECK_ALL) |
1c846c1f | 2170 | && !PL_sawampersand |
07bc277f NC |
2171 | && !(RX_EXTFLAGS(rx) & RXf_KEEPCOPY) |
2172 | && ((RX_EXTFLAGS(rx) & RXf_NOSCAN) | |
2173 | || !((RX_EXTFLAGS(rx) & RXf_INTUIT_TAIL) | |
f722798b IZ |
2174 | && (r_flags & REXEC_SCREAM)))) |
2175 | goto yup; | |
2176 | */ | |
a0d0e21e | 2177 | } |
71be2cbc | 2178 | |
2179 | /* only replace once? */ | |
a0d0e21e | 2180 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
10300be4 YO |
2181 | matched = CALLREGEXEC(rx, s, strend, orig, 0, TARG, NULL, |
2182 | r_flags | REXEC_CHECKED); | |
71be2cbc | 2183 | /* known replacement string? */ |
f272994b | 2184 | if (dstr) { |
3e462cdc KW |
2185 | |
2186 | /* Upgrade the source if the replacement is utf8 but the source is not, | |
2187 | * but only if it matched; see | |
2188 | * http://www.nntp.perl.org/group/perl.perl5.porters/2010/04/msg158809.html | |
2189 | */ | |
2190 | if (matched && DO_UTF8(dstr) && ! DO_UTF8(TARG)) { | |
2191 | const STRLEN new_len = sv_utf8_upgrade(TARG); | |
2192 | ||
2193 | /* If the lengths are the same, the pattern contains only | |
2194 | * invariants, can keep going; otherwise, various internal markers | |
2195 | * could be off, so redo */ | |
2196 | if (new_len != len) { | |
2197 | goto setup_match; | |
2198 | } | |
2199 | } | |
2200 | ||
8514a05a JH |
2201 | /* replacement needing upgrading? */ |
2202 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 2203 | nsv = sv_newmortal(); |
4a176938 | 2204 | SvSetSV(nsv, dstr); |
8514a05a JH |
2205 | if (PL_encoding) |
2206 | sv_recode_to_utf8(nsv, PL_encoding); | |
2207 | else | |
2208 | sv_utf8_upgrade(nsv); | |
5c144d81 | 2209 | c = SvPV_const(nsv, clen); |
4a176938 JH |
2210 | doutf8 = TRUE; |
2211 | } | |
2212 | else { | |
5c144d81 | 2213 | c = SvPV_const(dstr, clen); |
4a176938 | 2214 | doutf8 = DO_UTF8(dstr); |
8514a05a | 2215 | } |
f272994b A |
2216 | } |
2217 | else { | |
6136c704 | 2218 | c = NULL; |
f272994b A |
2219 | doutf8 = FALSE; |
2220 | } | |
2221 | ||
71be2cbc | 2222 | /* can do inplace substitution? */ |
ed252734 | 2223 | if (c |
f8c7b90f | 2224 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2225 | && !is_cow |
2226 | #endif | |
07bc277f NC |
2227 | && (I32)clen <= RX_MINLENRET(rx) && (once || !(r_flags & REXEC_COPY_STR)) |
2228 | && !(RX_EXTFLAGS(rx) & RXf_LOOKBEHIND_SEEN) | |
db79b45b | 2229 | && (!doutf8 || SvUTF8(TARG))) { |
10300be4 | 2230 | if (!matched) |
f722798b | 2231 | { |
8ec5e241 | 2232 | SPAGAIN; |
3280af22 | 2233 | PUSHs(&PL_sv_no); |
71be2cbc | 2234 | LEAVE_SCOPE(oldsave); |
2235 | RETURN; | |
2236 | } | |
f8c7b90f | 2237 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2238 | if (SvIsCOW(TARG)) { |
2239 | assert (!force_on_match); | |
2240 | goto have_a_cow; | |
2241 | } | |
2242 | #endif | |
71be2cbc | 2243 | if (force_on_match) { |
2244 | force_on_match = 0; | |
2245 | s = SvPV_force(TARG, len); | |
2246 | goto force_it; | |
2247 | } | |
71be2cbc | 2248 | d = s; |
3280af22 | 2249 | PL_curpm = pm; |
71be2cbc | 2250 | SvSCREAM_off(TARG); /* disable possible screamer */ |
2251 | if (once) { | |
48c036b1 | 2252 | rxtainted |= RX_MATCH_TAINTED(rx); |
07bc277f NC |
2253 | m = orig + RX_OFFS(rx)[0].start; |
2254 | d = orig + RX_OFFS(rx)[0].end; | |
71be2cbc | 2255 | s = orig; |
2256 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2257 | if (clen) { | |
2258 | Copy(c, m, clen, char); | |
2259 | m += clen; | |
a0d0e21e | 2260 | } |
71be2cbc | 2261 | i = strend - d; |
2262 | if (i > 0) { | |
2263 | Move(d, m, i, char); | |
2264 | m += i; | |
a0d0e21e | 2265 | } |
71be2cbc | 2266 | *m = '\0'; |
2267 | SvCUR_set(TARG, m - s); | |
2268 | } | |
155aba94 | 2269 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc | 2270 | d -= clen; |
2271 | m = d; | |
0d3c21b0 | 2272 | Move(s, d - i, i, char); |
71be2cbc | 2273 | sv_chop(TARG, d-i); |
71be2cbc | 2274 | if (clen) |
2275 | Copy(c, m, clen, char); | |
2276 | } | |
2277 | else if (clen) { | |
2278 | d -= clen; | |
2279 | sv_chop(TARG, d); | |
2280 | Copy(c, d, clen, char); | |
2281 | } | |
2282 | else { | |
2283 | sv_chop(TARG, d); | |
2284 | } | |
48c036b1 | 2285 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2286 | SPAGAIN; |
3280af22 | 2287 | PUSHs(&PL_sv_yes); |
71be2cbc | 2288 | } |
2289 | else { | |
71be2cbc | 2290 | do { |
2291 | if (iters++ > maxiters) | |
cea2e8a9 | 2292 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2293 | rxtainted |= RX_MATCH_TAINTED(rx); |
07bc277f | 2294 | m = RX_OFFS(rx)[0].start + orig; |
155aba94 | 2295 | if ((i = m - s)) { |
71be2cbc | 2296 | if (s != d) |
2297 | Move(s, d, i, char); | |
2298 | d += i; | |
a0d0e21e | 2299 | } |
71be2cbc | 2300 | if (clen) { |
2301 | Copy(c, d, clen, char); | |
2302 | d += clen; | |
2303 | } | |
07bc277f | 2304 | s = RX_OFFS(rx)[0].end + orig; |
f9f4320a | 2305 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
f722798b IZ |
2306 | TARG, NULL, |
2307 | /* don't match same null twice */ | |
2308 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 2309 | if (s != d) { |
2310 | i = strend - s; | |
aa07b2f6 | 2311 | SvCUR_set(TARG, d - SvPVX_const(TARG) + i); |
71be2cbc | 2312 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e | 2313 | } |
48c036b1 | 2314 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2315 | SPAGAIN; |
6e449a3a | 2316 | mPUSHi((I32)iters); |
a0d0e21e | 2317 | } |
80b498e0 | 2318 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 | 2319 | TAINT_IF(rxtainted); |
8ec5e241 NIS |
2320 | if (SvSMAGICAL(TARG)) { |
2321 | PUTBACK; | |
2322 | mg_set(TARG); | |
2323 | SPAGAIN; | |
2324 | } | |
9212bbba | 2325 | SvTAINT(TARG); |
aefe6dfc JH |
2326 | if (doutf8) |
2327 | SvUTF8_on(TARG); | |
71be2cbc | 2328 | LEAVE_SCOPE(oldsave); |
2329 | RETURN; | |
a0d0e21e | 2330 | } |
71be2cbc | 2331 | |
10300be4 | 2332 | if (matched) |
f722798b | 2333 | { |
a0d0e21e LW |
2334 | if (force_on_match) { |
2335 | force_on_match = 0; | |
2336 | s = SvPV_force(TARG, len); | |
2337 | goto force_it; | |
2338 | } | |
f8c7b90f | 2339 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2340 | have_a_cow: |
2341 | #endif | |
48c036b1 | 2342 | rxtainted |= RX_MATCH_TAINTED(rx); |
740cce10 | 2343 | dstr = newSVpvn_utf8(m, s-m, DO_UTF8(TARG)); |
cff085c1 | 2344 | SAVEFREESV(dstr); |
3280af22 | 2345 | PL_curpm = pm; |
a0d0e21e | 2346 | if (!c) { |
c09156bb | 2347 | register PERL_CONTEXT *cx; |
8ec5e241 | 2348 | SPAGAIN; |
a0d0e21e | 2349 | PUSHSUBST(cx); |
20e98b0f | 2350 | RETURNOP(cPMOP->op_pmreplrootu.op_pmreplroot); |
a0d0e21e | 2351 | } |
cf93c79d | 2352 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2353 | do { |
2354 | if (iters++ > maxiters) | |
cea2e8a9 | 2355 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2356 | rxtainted |= RX_MATCH_TAINTED(rx); |
07bc277f | 2357 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
a0d0e21e LW |
2358 | m = s; |
2359 | s = orig; | |
07bc277f | 2360 | orig = RX_SUBBEG(rx); |
a0d0e21e LW |
2361 | s = orig + (m - s); |
2362 | strend = s + (strend - m); | |
2363 | } | |
07bc277f | 2364 | m = RX_OFFS(rx)[0].start + orig; |
db79b45b JH |
2365 | if (doutf8 && !SvUTF8(dstr)) |
2366 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); | |
2367 | else | |
2368 | sv_catpvn(dstr, s, m-s); | |
07bc277f | 2369 | s = RX_OFFS(rx)[0].end + orig; |
a0d0e21e LW |
2370 | if (clen) |
2371 | sv_catpvn(dstr, c, clen); | |
2372 | if (once) | |
2373 | break; | |
f9f4320a | 2374 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
ffc61ed2 | 2375 | TARG, NULL, r_flags)); |
db79b45b JH |
2376 | if (doutf8 && !DO_UTF8(TARG)) |
2377 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); | |
89afcb60 A |
2378 | else |
2379 | sv_catpvn(dstr, s, strend - s); | |
748a9306 | 2380 | |
f8c7b90f | 2381 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2382 | /* The match may make the string COW. If so, brilliant, because that's |
2383 | just saved us one malloc, copy and free - the regexp has donated | |
2384 | the old buffer, and we malloc an entirely new one, rather than the | |
2385 | regexp malloc()ing a buffer and copying our original, only for | |
2386 | us to throw it away here during the substitution. */ | |
2387 | if (SvIsCOW(TARG)) { | |
2388 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
2389 | } else | |
2390 | #endif | |
2391 | { | |
8bd4d4c5 | 2392 | SvPV_free(TARG); |
ed252734 | 2393 | } |
f880fe2f | 2394 | SvPV_set(TARG, SvPVX(dstr)); |
748a9306 LW |
2395 | SvCUR_set(TARG, SvCUR(dstr)); |
2396 | SvLEN_set(TARG, SvLEN(dstr)); | |
f272994b | 2397 | doutf8 |= DO_UTF8(dstr); |
6136c704 | 2398 | SvPV_set(dstr, NULL); |
748a9306 | 2399 | |
48c036b1 | 2400 | TAINT_IF(rxtainted & 1); |
f878fbec | 2401 | SPAGAIN; |
6e449a3a | 2402 | mPUSHi((I32)iters); |
48c036b1 | 2403 | |
a0d0e21e | 2404 | (void)SvPOK_only(TARG); |
f272994b | 2405 | if (doutf8) |
60aeb6fd | 2406 | SvUTF8_on(TARG); |
48c036b1 | 2407 | TAINT_IF(rxtainted); |
a0d0e21e | 2408 | SvSETMAGIC(TARG); |
9212bbba | 2409 | SvTAINT(TARG); |
4633a7c4 | 2410 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2411 | RETURN; |
2412 | } | |
5cd24f17 | 2413 | goto ret_no; |
a0d0e21e LW |
2414 | |
2415 | nope: | |
1c846c1f | 2416 | ret_no: |
8ec5e241 | 2417 | SPAGAIN; |
3280af22 | 2418 | PUSHs(&PL_sv_no); |
4633a7c4 | 2419 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2420 | RETURN; |
2421 | } | |
2422 | ||
2423 | PP(pp_grepwhile) | |
2424 | { | |
27da23d5 | 2425 | dVAR; dSP; |
a0d0e21e LW |
2426 | |
2427 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2428 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2429 | ++*PL_markstack_ptr; | |
d343c3ef | 2430 | LEAVE_with_name("grep_item"); /* exit inner scope */ |
a0d0e21e LW |
2431 | |
2432 | /* All done yet? */ | |
3280af22 | 2433 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2434 | I32 items; |
c4420975 | 2435 | const I32 gimme = GIMME_V; |
a0d0e21e | 2436 | |
d343c3ef | 2437 | LEAVE_with_name("grep"); /* exit outer scope */ |
a0d0e21e | 2438 | (void)POPMARK; /* pop src */ |
3280af22 | 2439 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2440 | (void)POPMARK; /* pop dst */ |
3280af22 | 2441 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2442 | if (gimme == G_SCALAR) { |
7cc47870 | 2443 | if (PL_op->op_private & OPpGREP_LEX) { |
c4420975 | 2444 | SV* const sv = sv_newmortal(); |
7cc47870 RGS |
2445 | sv_setiv(sv, items); |
2446 | PUSHs(sv); | |
2447 | } | |
2448 | else { | |
2449 | dTARGET; | |
2450 | XPUSHi(items); | |
2451 | } | |
a0d0e21e | 2452 | } |
54310121 | 2453 | else if (gimme == G_ARRAY) |
2454 | SP += items; | |
a0d0e21e LW |
2455 | RETURN; |
2456 | } | |
2457 | else { | |
2458 | SV *src; | |
2459 | ||
d343c3ef | 2460 | ENTER_with_name("grep_item"); /* enter inner scope */ |
1d7c1841 | 2461 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2462 | |
3280af22 | 2463 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2464 | SvTEMP_off(src); |
59f00321 RGS |
2465 | if (PL_op->op_private & OPpGREP_LEX) |
2466 | PAD_SVl(PL_op->op_targ) = src; | |
2467 | else | |
414bf5ae | 2468 | DEFSV_set(src); |
a0d0e21e LW |
2469 | |
2470 | RETURNOP(cLOGOP->op_other); | |
2471 | } | |
2472 | } | |
2473 | ||
2474 | PP(pp_leavesub) | |
2475 | { | |
27da23d5 | 2476 | dVAR; dSP; |
a0d0e21e LW |
2477 | SV **mark; |
2478 | SV **newsp; | |
2479 | PMOP *newpm; | |
2480 | I32 gimme; | |
c09156bb | 2481 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2482 | SV *sv; |
a0d0e21e | 2483 | |
9850bf21 RH |
2484 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2485 | return 0; | |
2486 | ||
a0d0e21e | 2487 | POPBLOCK(cx,newpm); |
5dd42e15 | 2488 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2489 | |
a1f49e72 | 2490 | TAINT_NOT; |
a0d0e21e LW |
2491 | if (gimme == G_SCALAR) { |
2492 | MARK = newsp + 1; | |
a29cdaf0 | 2493 | if (MARK <= SP) { |
a8bba7fa | 2494 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 IZ |
2495 | if (SvTEMP(TOPs)) { |
2496 | *MARK = SvREFCNT_inc(TOPs); | |
2497 | FREETMPS; | |
2498 | sv_2mortal(*MARK); | |
cd06dffe GS |
2499 | } |
2500 | else { | |
959e3673 | 2501 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2502 | FREETMPS; |
959e3673 GS |
2503 | *MARK = sv_mortalcopy(sv); |
2504 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2505 | } |
cd06dffe GS |
2506 | } |
2507 | else | |
a29cdaf0 | 2508 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe GS |
2509 | } |
2510 | else { | |
f86702cc | 2511 | MEXTEND(MARK, 0); |
3280af22 | 2512 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2513 | } |
2514 | SP = MARK; | |
2515 | } | |
54310121 | 2516 | else if (gimme == G_ARRAY) { |
f86702cc | 2517 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 | 2518 | if (!SvTEMP(*MARK)) { |
f86702cc | 2519 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2520 | TAINT_NOT; /* Each item is independent */ |
2521 | } | |
f86702cc | 2522 | } |
a0d0e21e | 2523 | } |
f86702cc | 2524 | PUTBACK; |
1c846c1f | 2525 | |
a57c6685 | 2526 | LEAVE; |
5dd42e15 | 2527 | cxstack_ix--; |
b0d9ce38 | 2528 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2529 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2530 | |
b0d9ce38 | 2531 | LEAVESUB(sv); |
f39bc417 | 2532 | return cx->blk_sub.retop; |
a0d0e21e LW |
2533 | } |
2534 | ||
cd06dffe GS |
2535 | /* This duplicates the above code because the above code must not |
2536 | * get any slower by more conditions */ | |
2537 | PP(pp_leavesublv) | |
2538 | { | |
27da23d5 | 2539 | dVAR; dSP; |
cd06dffe GS |
2540 | SV **mark; |
2541 | SV **newsp; | |
2542 | PMOP *newpm; | |
2543 | I32 gimme; | |
2544 | register PERL_CONTEXT *cx; | |
b0d9ce38 | 2545 | SV *sv; |
cd06dffe | 2546 | |
9850bf21 RH |
2547 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2548 | return 0; | |
2549 | ||
cd06dffe | 2550 | POPBLOCK(cx,newpm); |
5dd42e15 | 2551 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2552 | |
cd06dffe GS |
2553 | TAINT_NOT; |
2554 | ||
bafb2adc | 2555 | if (CxLVAL(cx) & OPpENTERSUB_INARGS) { |
cd06dffe GS |
2556 | /* We are an argument to a function or grep(). |
2557 | * This kind of lvalueness was legal before lvalue | |
2558 | * subroutines too, so be backward compatible: | |
2559 | * cannot report errors. */ | |
2560 | ||
2561 | /* Scalar context *is* possible, on the LHS of -> only, | |
2562 | * as in f()->meth(). But this is not an lvalue. */ | |
2563 | if (gimme == G_SCALAR) | |
2564 | goto temporise; | |
2565 | if (gimme == G_ARRAY) { | |
a8bba7fa | 2566 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe GS |
2567 | goto temporise_array; |
2568 | EXTEND_MORTAL(SP - newsp); | |
2569 | for (mark = newsp + 1; mark <= SP; mark++) { | |
2570 | if (SvTEMP(*mark)) | |
6f207bd3 | 2571 | NOOP; |
cd06dffe GS |
2572 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) |
2573 | *mark = sv_mortalcopy(*mark); | |
2574 | else { | |
2575 | /* Can be a localized value subject to deletion. */ | |
2576 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2577 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2578 | } |
2579 | } | |
2580 | } | |
2581 | } | |
bafb2adc | 2582 | else if (CxLVAL(cx)) { /* Leave it as it is if we can. */ |
cd06dffe GS |
2583 | /* Here we go for robustness, not for speed, so we change all |
2584 | * the refcounts so the caller gets a live guy. Cannot set | |
2585 | * TEMP, so sv_2mortal is out of question. */ | |
a8bba7fa | 2586 | if (!CvLVALUE(cx->blk_sub.cv)) { |
a57c6685 | 2587 | LEAVE; |
5dd42e15 | 2588 | cxstack_ix--; |
b0d9ce38 | 2589 | POPSUB(cx,sv); |
d470f89e | 2590 | PL_curpm = newpm; |
b0d9ce38 | 2591 | LEAVESUB(sv); |
d470f89e GS |
2592 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2593 | } | |
cd06dffe GS |
2594 | if (gimme == G_SCALAR) { |
2595 | MARK = newsp + 1; | |
2596 | EXTEND_MORTAL(1); | |
2597 | if (MARK == SP) { | |
f9bc45ef TP |
2598 | /* Temporaries are bad unless they happen to be elements |
2599 | * of a tied hash or array */ | |
2600 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY) && | |
2601 | !(SvRMAGICAL(TOPs) && mg_find(TOPs, PERL_MAGIC_tiedelem))) { | |
a57c6685 | 2602 | LEAVE; |
5dd42e15 | 2603 | cxstack_ix--; |
b0d9ce38 | 2604 | POPSUB(cx,sv); |
d470f89e | 2605 | PL_curpm = newpm; |
b0d9ce38 | 2606 | LEAVESUB(sv); |
e9f19e3c HS |
2607 | DIE(aTHX_ "Can't return %s from lvalue subroutine", |
2608 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" | |
2609 | : "a readonly value" : "a temporary"); | |
d470f89e | 2610 | } |
cd06dffe GS |
2611 | else { /* Can be a localized value |
2612 | * subject to deletion. */ | |
2613 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2614 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2615 | } |
2616 | } | |
d470f89e | 2617 | else { /* Should not happen? */ |
a57c6685 | 2618 | LEAVE; |
5dd42e15 | 2619 | cxstack_ix--; |
b0d9ce38 | 2620 | POPSUB(cx,sv); |
d470f89e | 2621 | PL_curpm = newpm; |
b0d9ce38 | 2622 | LEAVESUB(sv); |
d470f89e | 2623 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe | 2624 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e | 2625 | } |
cd06dffe GS |
2626 | SP = MARK; |
2627 | } | |
2628 | else if (gimme == G_ARRAY) { | |
2629 | EXTEND_MORTAL(SP - newsp); | |
2630 | for (mark = newsp + 1; mark <= SP; mark++) { | |
f206cdda AMS |
2631 | if (*mark != &PL_sv_undef |
2632 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { | |
d470f89e GS |
2633 | /* Might be flattened array after $#array = */ |
2634 | PUTBACK; | |
a57c6685 | 2635 | LEAVE; |
5dd42e15 | 2636 | cxstack_ix--; |
b0d9ce38 | 2637 | POPSUB(cx,sv); |
d470f89e | 2638 | PL_curpm = newpm; |
b0d9ce38 | 2639 | LEAVESUB(sv); |
f206cdda AMS |
2640 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2641 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
d470f89e | 2642 | } |
cd06dffe | 2643 | else { |
cd06dffe GS |
2644 | /* Can be a localized value subject to deletion. */ |
2645 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2646 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2647 | } |
2648 | } | |
2649 | } | |
2650 | } | |
2651 | else { | |
2652 | if (gimme == G_SCALAR) { | |
2653 | temporise: | |
2654 | MARK = newsp + 1; | |
2655 | if (MARK <= SP) { | |
a8bba7fa | 2656 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe GS |
2657 | if (SvTEMP(TOPs)) { |
2658 | *MARK = SvREFCNT_inc(TOPs); | |
2659 | FREETMPS; | |
2660 | sv_2mortal(*MARK); | |
2661 | } | |
2662 | else { | |
959e3673 | 2663 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe | 2664 | FREETMPS; |
959e3673 GS |
2665 | *MARK = sv_mortalcopy(sv); |
2666 | SvREFCNT_dec(sv); | |
cd06dffe GS |
2667 | } |
2668 | } | |
2669 | else | |
2670 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
2671 | } | |
2672 | else { | |
2673 | MEXTEND(MARK, 0); | |
2674 | *MARK = &PL_sv_undef; | |
2675 | } | |
2676 | SP = MARK; | |
2677 | } | |
2678 | else if (gimme == G_ARRAY) { | |
2679 | temporise_array: | |
2680 | for (MARK = newsp + 1; MARK <= SP; MARK++) { | |
2681 | if (!SvTEMP(*MARK)) { | |
2682 | *MARK = sv_mortalcopy(*MARK); | |
2683 | TAINT_NOT; /* Each item is independent */ | |
2684 | } | |
2685 | } | |
2686 | } | |
2687 | } | |
2688 | PUTBACK; | |
1c846c1f | 2689 | |
a57c6685 | 2690 | LEAVE; |
5dd42e15 | 2691 | cxstack_ix--; |
b0d9ce38 | 2692 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe GS |
2693 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2694 | ||
b0d9ce38 | 2695 | LEAVESUB(sv); |
f39bc417 | 2696 | return cx->blk_sub.retop; |
cd06dffe GS |
2697 | } |
2698 | ||
a0d0e21e LW |
2699 | PP(pp_entersub) |
2700 | { | |
27da23d5 | 2701 | dVAR; dSP; dPOPss; |
a0d0e21e | 2702 | GV *gv; |
a0d0e21e | 2703 | register CV *cv; |
c09156bb | 2704 | register PERL_CONTEXT *cx; |
5d94fbed | 2705 | I32 gimme; |
a9c4fd4e | 2706 | const bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2707 | |
2708 | if (!sv) | |
cea2e8a9 | 2709 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e | 2710 | switch (SvTYPE(sv)) { |
f1025168 NC |
2711 | /* This is overwhelming the most common case: */ |
2712 | case SVt_PVGV: | |
6e592b3a BM |
2713 | if (!isGV_with_GP(sv)) |
2714 | DIE(aTHX_ "Not a CODE reference"); | |
159b6efe | 2715 | if (!(cv = GvCVu((const GV *)sv))) { |
f730a42d | 2716 | HV *stash; |
f2c0649b | 2717 | cv = sv_2cv(sv, &stash, &gv, 0); |
f730a42d | 2718 | } |
f1025168 | 2719 | if (!cv) { |
a57c6685 | 2720 | ENTER; |
f1025168 NC |
2721 | SAVETMPS; |
2722 | goto try_autoload; | |
2723 | } | |
2724 | break; | |
a0d0e21e LW |
2725 | default: |
2726 | if (!SvROK(sv)) { | |
a9c4fd4e | 2727 | const char *sym; |
780a5241 | 2728 | STRLEN len; |
3280af22 | 2729 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a | 2730 | if (hasargs) |
3280af22 | 2731 | SP = PL_stack_base + POPMARK; |
a0d0e21e | 2732 | RETURN; |
fb73857a | 2733 | } |
15ff848f CS |
2734 | if (SvGMAGICAL(sv)) { |
2735 | mg_get(sv); | |
f5f1d18e AMS |
2736 | if (SvROK(sv)) |
2737 | goto got_rv; | |
780a5241 NC |
2738 | if (SvPOKp(sv)) { |
2739 | sym = SvPVX_const(sv); | |
2740 | len = SvCUR(sv); | |
2741 | } else { | |
2742 | sym = NULL; | |
2743 | len = 0; | |
2744 | } | |
15ff848f | 2745 | } |
a9c4fd4e | 2746 | else { |
780a5241 | 2747 | sym = SvPV_const(sv, len); |
a9c4fd4e | 2748 | } |
15ff848f | 2749 | if (!sym) |
cea2e8a9 | 2750 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2751 | if (PL_op->op_private & HINT_STRICT_REFS) |
973a7615 | 2752 | DIE(aTHX_ "Can't use string (\"%.32s\"%s) as a subroutine ref while \"strict refs\" in use", sym, len>32 ? "..." : ""); |
780a5241 | 2753 | cv = get_cvn_flags(sym, len, GV_ADD|SvUTF8(sv)); |
a0d0e21e LW |
2754 | break; |
2755 | } | |
f5f1d18e | 2756 | got_rv: |
f5284f61 | 2757 | { |
823a54a3 | 2758 | SV * const * sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
f5284f61 IZ |
2759 | tryAMAGICunDEREF(to_cv); |
2760 | } | |
ea726b52 | 2761 | cv = MUTABLE_CV(SvRV(sv)); |
a0d0e21e LW |
2762 | if (SvTYPE(cv) == SVt_PVCV) |
2763 | break; | |
2764 | /* FALL THROUGH */ | |
2765 | case SVt_PVHV: | |
2766 | case SVt_PVAV: | |
cea2e8a9 | 2767 | DIE(aTHX_ "Not a CODE reference"); |
f1025168 | 2768 | /* This is the second most common case: */ |
a0d0e21e | 2769 | case SVt_PVCV: |
ea726b52 | 2770 | cv = MUTABLE_CV(sv); |
a0d0e21e | 2771 | break; |
a0d0e21e LW |
2772 | } |
2773 | ||
a57c6685 | 2774 | ENTER; |
a0d0e21e LW |
2775 | SAVETMPS; |
2776 | ||
2777 | retry: | |
a0d0e21e | 2778 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
2f349aa0 NC |
2779 | GV* autogv; |
2780 | SV* sub_name; | |
2781 | ||
2782 | /* anonymous or undef'd function leaves us no recourse */ | |
2783 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
2784 | DIE(aTHX_ "Undefined subroutine called"); | |
2785 | ||
2786 | /* autoloaded stub? */ | |
2787 | if (cv != GvCV(gv)) { | |
2788 | cv = GvCV(gv); | |
2789 | } | |
2790 | /* should call AUTOLOAD now? */ | |
2791 | else { | |
7e623da3 | 2792 | try_autoload: |
2f349aa0 | 2793 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
7e623da3 | 2794 | FALSE))) |
2f349aa0 NC |
2795 | { |
2796 | cv = GvCV(autogv); | |
2797 | } | |
2798 | /* sorry */ | |
2799 | else { | |
2800 | sub_name = sv_newmortal(); | |
6136c704 | 2801 | gv_efullname3(sub_name, gv, NULL); |
be2597df | 2802 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", SVfARG(sub_name)); |
2f349aa0 NC |
2803 | } |
2804 | } | |
2805 | if (!cv) | |
2806 | DIE(aTHX_ "Not a CODE reference"); | |
2807 | goto retry; | |
a0d0e21e LW |
2808 | } |
2809 | ||
54310121 | 2810 | gimme = GIMME_V; |
67caa1fe | 2811 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
005a8a35 | 2812 | Perl_get_db_sub(aTHX_ &sv, cv); |
a9ef256d NC |
2813 | if (CvISXSUB(cv)) |
2814 | PL_curcopdb = PL_curcop; | |
1ad62f64 BR |
2815 | if (CvLVALUE(cv)) { |
2816 | /* check for lsub that handles lvalue subroutines */ | |
ae5c1e95 | 2817 | cv = GvCV(gv_HVadd(gv_fetchpvs("DB::lsub", GV_ADDMULTI, SVt_PVHV))); |
1ad62f64 BR |
2818 | /* if lsub not found then fall back to DB::sub */ |
2819 | if (!cv) cv = GvCV(PL_DBsub); | |
2820 | } else { | |
2821 | cv = GvCV(PL_DBsub); | |
2822 | } | |
a9ef256d | 2823 | |
ccafdc96 RGS |
2824 | if (!cv || (!CvXSUB(cv) && !CvSTART(cv))) |
2825 | DIE(aTHX_ "No DB::sub routine defined"); | |
67caa1fe | 2826 | } |
a0d0e21e | 2827 | |
aed2304a | 2828 | if (!(CvISXSUB(cv))) { |
f1025168 | 2829 | /* This path taken at least 75% of the time */ |
a0d0e21e LW |
2830 | dMARK; |
2831 | register I32 items = SP - MARK; | |
0bcc34c2 | 2832 | AV* const padlist = CvPADLIST(cv); |
a0d0e21e LW |
2833 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2834 | PUSHSUB(cx); | |
f39bc417 | 2835 | cx->blk_sub.retop = PL_op->op_next; |
a0d0e21e | 2836 | CvDEPTH(cv)++; |
6b35e009 GS |
2837 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2838 | * that eval'' ops within this sub know the correct lexical space. | |
a3985cdc DM |
2839 | * Owing the speed considerations, we choose instead to search for |
2840 | * the cv using find_runcv() when calling doeval(). | |
6b35e009 | 2841 | */ |
3a76ca88 RGS |
2842 | if (CvDEPTH(cv) >= 2) { |
2843 | PERL_STACK_OVERFLOW_CHECK(); | |
2844 | pad_push(padlist, CvDEPTH(cv)); | |
a0d0e21e | 2845 | } |
3a76ca88 RGS |
2846 | SAVECOMPPAD(); |
2847 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); | |
2848 | if (hasargs) { | |
502c6561 | 2849 | AV *const av = MUTABLE_AV(PAD_SVl(0)); |
221373f0 GS |
2850 | if (AvREAL(av)) { |
2851 | /* @_ is normally not REAL--this should only ever | |
2852 | * happen when DB::sub() calls things that modify @_ */ | |
2853 | av_clear(av); | |
2854 | AvREAL_off(av); | |
2855 | AvREIFY_on(av); | |
2856 | } | |
3280af22 | 2857 | cx->blk_sub.savearray = GvAV(PL_defgv); |
502c6561 | 2858 | GvAV(PL_defgv) = MUTABLE_AV(SvREFCNT_inc_simple(av)); |
dd2155a4 | 2859 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2860 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2861 | ++MARK; |
2862 | ||
2863 | if (items > AvMAX(av) + 1) { | |
504618e9 | 2864 | SV **ary = AvALLOC(av); |
a0d0e21e LW |
2865 | if (AvARRAY(av) != ary) { |
2866 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
9c6bc640 | 2867 | AvARRAY(av) = ary; |
a0d0e21e LW |
2868 | } |
2869 | if (items > AvMAX(av) + 1) { | |
2870 | AvMAX(av) = items - 1; | |
2871 | Renew(ary,items,SV*); | |
2872 | AvALLOC(av) = ary; | |
9c6bc640 | 2873 | AvARRAY(av) = ary; |
a0d0e21e LW |
2874 | } |
2875 | } | |
2876 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2877 | AvFILLp(av) = items - 1; |
1c846c1f | 2878 | |
a0d0e21e LW |
2879 | while (items--) { |
2880 | if (*MARK) | |
2881 | SvTEMP_off(*MARK); | |
2882 | MARK++; | |
2883 | } | |
2884 | } | |
4a925ff6 GS |
2885 | /* warning must come *after* we fully set up the context |
2886 | * stuff so that __WARN__ handlers can safely dounwind() | |
2887 | * if they want to | |
2888 | */ | |
2b9dff67 | 2889 | if (CvDEPTH(cv) == PERL_SUB_DEPTH_WARN && ckWARN(WARN_RECURSION) |
4a925ff6 GS |
2890 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) |
2891 | sub_crush_depth(cv); | |
a0d0e21e LW |
2892 | RETURNOP(CvSTART(cv)); |
2893 | } | |
f1025168 | 2894 | else { |
3a76ca88 | 2895 | I32 markix = TOPMARK; |
f1025168 | 2896 | |
3a76ca88 | 2897 | PUTBACK; |
f1025168 | 2898 | |
3a76ca88 RGS |
2899 | if (!hasargs) { |
2900 | /* Need to copy @_ to stack. Alternative may be to | |
2901 | * switch stack to @_, and copy return values | |
2902 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
2903 | AV * const av = GvAV(PL_defgv); | |
2904 | const I32 items = AvFILLp(av) + 1; /* @_ is not tieable */ | |
2905 | ||
2906 | if (items) { | |
2907 | /* Mark is at the end of the stack. */ | |
2908 | EXTEND(SP, items); | |
2909 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2910 | SP += items; | |
2911 | PUTBACK ; | |
2912 | } | |
2913 | } | |
2914 | /* We assume first XSUB in &DB::sub is the called one. */ | |
2915 | if (PL_curcopdb) { | |
2916 | SAVEVPTR(PL_curcop); | |
2917 | PL_curcop = PL_curcopdb; | |
2918 | PL_curcopdb = NULL; | |
2919 | } | |
2920 | /* Do we need to open block here? XXXX */ | |
72df79cf GF |
2921 | |
2922 | /* CvXSUB(cv) must not be NULL because newXS() refuses NULL xsub address */ | |
2923 | assert(CvXSUB(cv)); | |
2924 | CALL_FPTR(CvXSUB(cv))(aTHX_ cv); | |
3a76ca88 RGS |
2925 | |
2926 | /* Enforce some sanity in scalar context. */ | |
2927 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { | |
2928 | if (markix > PL_stack_sp - PL_stack_base) | |
2929 | *(PL_stack_base + markix) = &PL_sv_undef; | |
2930 | else | |
2931 | *(PL_stack_base + markix) = *PL_stack_sp; | |
2932 | PL_stack_sp = PL_stack_base + markix; | |
2933 | } | |
a57c6685 | 2934 | LEAVE; |
f1025168 NC |
2935 | return NORMAL; |
2936 | } | |
a0d0e21e LW |
2937 | } |
2938 | ||
44a8e56a | 2939 | void |
864dbfa3 | 2940 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2941 | { |
7918f24d NC |
2942 | PERL_ARGS_ASSERT_SUB_CRUSH_DEPTH; |
2943 | ||
44a8e56a | 2944 | if (CvANON(cv)) |
9014280d | 2945 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 2946 | else { |
aec46f14 | 2947 | SV* const tmpstr = sv_newmortal(); |
6136c704 | 2948 | gv_efullname3(tmpstr, CvGV(cv), NULL); |
35c1215d | 2949 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
be2597df | 2950 | SVfARG(tmpstr)); |
44a8e56a | 2951 | } |
2952 | } | |
2953 | ||
a0d0e21e LW |
2954 | PP(pp_aelem) |
2955 | { | |
97aff369 | 2956 | dVAR; dSP; |
a0d0e21e | 2957 | SV** svp; |
a3b680e6 | 2958 | SV* const elemsv = POPs; |
d804643f | 2959 | IV elem = SvIV(elemsv); |
502c6561 | 2960 | AV *const av = MUTABLE_AV(POPs); |
e1ec3a88 AL |
2961 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
2962 | const U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > av_len(av)); | |
4ad10a0b VP |
2963 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
2964 | bool preeminent = TRUE; | |
be6c24e0 | 2965 | SV *sv; |
a0d0e21e | 2966 | |
e35c1634 | 2967 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
95b63a38 JH |
2968 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
2969 | "Use of reference \"%"SVf"\" as array index", | |
be2597df | 2970 | SVfARG(elemsv)); |
748a9306 | 2971 | if (elem > 0) |
fc15ae8f | 2972 | elem -= CopARYBASE_get(PL_curcop); |
a0d0e21e LW |
2973 | if (SvTYPE(av) != SVt_PVAV) |
2974 | RETPUSHUNDEF; | |
4ad10a0b VP |
2975 | |
2976 | if (localizing) { | |
2977 | MAGIC *mg; | |
2978 | HV *stash; | |
2979 | ||
2980 | /* If we can determine whether the element exist, | |
2981 | * Try to preserve the existenceness of a tied array | |
2982 | * element by using EXISTS and DELETE if possible. | |
2983 | * Fallback to FETCH and STORE otherwise. */ | |
2984 | if (SvCANEXISTDELETE(av)) | |
2985 | preeminent = av_exists(av, elem); | |
2986 | } | |
2987 | ||
68dc0745 | 2988 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2989 | if (lval) { |
2b573ace | 2990 | #ifdef PERL_MALLOC_WRAP |
2b573ace | 2991 | if (SvUOK(elemsv)) { |
a9c4fd4e | 2992 | const UV uv = SvUV(elemsv); |
2b573ace JH |
2993 | elem = uv > IV_MAX ? IV_MAX : uv; |
2994 | } | |
2995 | else if (SvNOK(elemsv)) | |
2996 | elem = (IV)SvNV(elemsv); | |
a3b680e6 AL |
2997 | if (elem > 0) { |
2998 | static const char oom_array_extend[] = | |
2999 | "Out of memory during array extend"; /* Duplicated in av.c */ | |
2b573ace | 3000 | MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend); |
a3b680e6 | 3001 | } |
2b573ace | 3002 | #endif |
3280af22 | 3003 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 3004 | SV* lv; |
3005 | if (!defer) | |
cea2e8a9 | 3006 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 3007 | lv = sv_newmortal(); |
3008 | sv_upgrade(lv, SVt_PVLV); | |
3009 | LvTYPE(lv) = 'y'; | |
a0714e2c | 3010 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); |
b37c2d43 | 3011 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
68dc0745 | 3012 | LvTARGOFF(lv) = elem; |
3013 | LvTARGLEN(lv) = 1; | |
3014 | PUSHs(lv); | |
3015 | RETURN; | |
3016 | } | |
4ad10a0b VP |
3017 | if (localizing) { |
3018 | if (preeminent) | |
3019 | save_aelem(av, elem, svp); | |
3020 | else | |
3021 | SAVEADELETE(av, elem); | |
3022 | } | |
533c011a NIS |
3023 | else if (PL_op->op_private & OPpDEREF) |
3024 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 3025 | } |
3280af22 | 3026 | sv = (svp ? *svp : &PL_sv_undef); |
39cf747a | 3027 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
fd69380d | 3028 | mg_get(sv); |
be6c24e0 | 3029 | PUSHs(sv); |
a0d0e21e LW |
3030 | RETURN; |
3031 | } | |
3032 | ||
02a9e968 | 3033 | void |
864dbfa3 | 3034 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 | 3035 | { |
7918f24d NC |
3036 | PERL_ARGS_ASSERT_VIVIFY_REF; |
3037 | ||
5b295bef | 3038 | SvGETMAGIC(sv); |
02a9e968 CS |
3039 | if (!SvOK(sv)) { |
3040 | if (SvREADONLY(sv)) | |
f1f66076 | 3041 | Perl_croak(aTHX_ "%s", PL_no_modify); |
43230e26 | 3042 | prepare_SV_for_RV(sv); |
68dc0745 | 3043 | switch (to_what) { |
5f05dabc | 3044 | case OPpDEREF_SV: |
561b68a9 | 3045 | SvRV_set(sv, newSV(0)); |
5f05dabc | 3046 | break; |
3047 | case OPpDEREF_AV: | |
ad64d0ec | 3048 | SvRV_set(sv, MUTABLE_SV(newAV())); |
5f05dabc | 3049 | break; |
3050 | case OPpDEREF_HV: | |
ad64d0ec | 3051 | SvRV_set(sv, MUTABLE_SV(newHV())); |
5f05dabc | 3052 | break; |
3053 | } | |
02a9e968 CS |
3054 | SvROK_on(sv); |
3055 | SvSETMAGIC(sv); | |
3056 | } | |
3057 | } | |
3058 | ||
a0d0e21e LW |
3059 | PP(pp_method) |
3060 | { | |
97aff369 | 3061 | dVAR; dSP; |
890ce7af | 3062 | SV* const sv = TOPs; |
f5d5a27c CS |
3063 | |
3064 | if (SvROK(sv)) { | |
890ce7af | 3065 | SV* const rsv = SvRV(sv); |
f5d5a27c CS |
3066 | if (SvTYPE(rsv) == SVt_PVCV) { |
3067 | SETs(rsv); | |
3068 | RETURN; | |
3069 | } | |
3070 | } | |
3071 | ||
4608196e | 3072 | SETs(method_common(sv, NULL)); |
f5d5a27c CS |
3073 | RETURN; |
3074 | } | |
3075 | ||
3076 | PP(pp_method_named) | |
3077 | { | |
97aff369 | 3078 | dVAR; dSP; |
890ce7af | 3079 | SV* const sv = cSVOP_sv; |
c158a4fd | 3080 | U32 hash = SvSHARED_HASH(sv); |
f5d5a27c CS |
3081 | |
3082 | XPUSHs(method_common(sv, &hash)); | |
3083 | RETURN; | |
3084 | } | |
3085 | ||
3086 | STATIC SV * | |
3087 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
3088 | { | |
97aff369 | 3089 | dVAR; |
a0d0e21e LW |
3090 | SV* ob; |
3091 | GV* gv; | |
56304f61 | 3092 | HV* stash; |
6136c704 | 3093 | const char* packname = NULL; |
a0714e2c | 3094 | SV *packsv = NULL; |
ac91690f | 3095 | STRLEN packlen; |
46c461b5 | 3096 | SV * const sv = *(PL_stack_base + TOPMARK + 1); |
f5d5a27c | 3097 | |
7918f24d NC |
3098 | PERL_ARGS_ASSERT_METHOD_COMMON; |
3099 | ||
4f1b7578 | 3100 | if (!sv) |
a214957f VP |
3101 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" on an undefined value", |
3102 | SVfARG(meth)); | |
4f1b7578 | 3103 | |
5b295bef | 3104 | SvGETMAGIC(sv); |
a0d0e21e | 3105 | if (SvROK(sv)) |
ad64d0ec | 3106 | ob = MUTABLE_SV(SvRV(sv)); |
a0d0e21e LW |
3107 | else { |
3108 | GV* iogv; | |
a0d0e21e | 3109 | |
af09ea45 | 3110 | /* this isn't a reference */ |
5c144d81 | 3111 | if(SvOK(sv) && (packname = SvPV_const(sv, packlen))) { |
b464bac0 | 3112 | const HE* const he = hv_fetch_ent(PL_stashcache, sv, 0, 0); |
081fc587 | 3113 | if (he) { |
5e6396ae | 3114 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
081fc587 AB |
3115 | goto fetch; |
3116 | } | |
3117 | } | |
3118 | ||
a0d0e21e | 3119 | if (!SvOK(sv) || |
05f5af9a | 3120 | !(packname) || |
f776e3cd | 3121 | !(iogv = gv_fetchsv(sv, 0, SVt_PVIO)) || |
ad64d0ec | 3122 | !(ob=MUTABLE_SV(GvIO(iogv)))) |
a0d0e21e | 3123 | { |
af09ea45 | 3124 | /* this isn't the name of a filehandle either */ |
1c846c1f | 3125 | if (!packname || |
fd400ab9 | 3126 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 3127 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
3128 | : !isIDFIRST(*packname) |
3129 | )) | |
3130 | { | |
a214957f VP |
3131 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" %s", |
3132 | SVfARG(meth), | |
f5d5a27c CS |
3133 | SvOK(sv) ? "without a package or object reference" |
3134 | : "on an undefined value"); | |
834a4ddd | 3135 | } |
af09ea45 | 3136 | /* assume it's a package name */ |
da51bb9b | 3137 | stash = gv_stashpvn(packname, packlen, 0); |
0dae17bd GS |
3138 | if (!stash) |
3139 | packsv = sv; | |
081fc587 | 3140 | else { |
d4c19fe8 | 3141 | SV* const ref = newSViv(PTR2IV(stash)); |
04fe65b0 | 3142 | (void)hv_store(PL_stashcache, packname, packlen, ref, 0); |
7e8961ec | 3143 | } |
ac91690f | 3144 | goto fetch; |
a0d0e21e | 3145 | } |
af09ea45 | 3146 | /* it _is_ a filehandle name -- replace with a reference */ |
ad64d0ec | 3147 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV(MUTABLE_SV(iogv))); |
a0d0e21e LW |
3148 | } |
3149 | ||
af09ea45 | 3150 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 | 3151 | if (!ob || !(SvOBJECT(ob) |
6e592b3a BM |
3152 | || (SvTYPE(ob) == SVt_PVGV |
3153 | && isGV_with_GP(ob) | |
159b6efe | 3154 | && (ob = MUTABLE_SV(GvIO((const GV *)ob))) |
f0d43078 GS |
3155 | && SvOBJECT(ob)))) |
3156 | { | |
a214957f | 3157 | const char * const name = SvPV_nolen_const(meth); |
f5d5a27c | 3158 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
59e7186f | 3159 | (SvSCREAM(meth) && strEQ(name,"isa")) ? "DOES" : |
f5d5a27c | 3160 | name); |
f0d43078 | 3161 | } |
a0d0e21e | 3162 | |
56304f61 | 3163 | stash = SvSTASH(ob); |
a0d0e21e | 3164 | |
ac91690f | 3165 | fetch: |
af09ea45 IK |
3166 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3167 | gv_fetchmethod can cope (it seems they can) */ | |
3168 | ||
f5d5a27c CS |
3169 | /* shortcut for simple names */ |
3170 | if (hashp) { | |
b464bac0 | 3171 | const HE* const he = hv_fetch_ent(stash, meth, 0, *hashp); |
f5d5a27c | 3172 | if (he) { |
159b6efe | 3173 | gv = MUTABLE_GV(HeVAL(he)); |
f5d5a27c | 3174 | if (isGV(gv) && GvCV(gv) && |
e1a479c5 | 3175 | (!GvCVGEN(gv) || GvCVGEN(gv) |
dd69841b | 3176 | == (PL_sub_generation + HvMROMETA(stash)->cache_gen))) |
ad64d0ec | 3177 | return MUTABLE_SV(GvCV(gv)); |
f5d5a27c CS |
3178 | } |
3179 | } | |
3180 | ||
a214957f VP |
3181 | gv = gv_fetchmethod_flags(stash ? stash : MUTABLE_HV(packsv), |
3182 | SvPV_nolen_const(meth), | |
256d1bb2 | 3183 | GV_AUTOLOAD | GV_CROAK); |
9b9d0b15 | 3184 | |
256d1bb2 | 3185 | assert(gv); |
9b9d0b15 | 3186 | |
ad64d0ec | 3187 | return isGV(gv) ? MUTABLE_SV(GvCV(gv)) : MUTABLE_SV(gv); |
a0d0e21e | 3188 | } |
241d1a3b NC |
3189 | |
3190 | /* | |
3191 | * Local variables: | |
3192 | * c-indentation-style: bsd | |
3193 | * c-basic-offset: 4 | |
3194 | * indent-tabs-mode: t | |
3195 | * End: | |
3196 | * | |
37442d52 RGS |
3197 | * ex: set ts=8 sts=4 sw=4 noet: |
3198 | */ |